/mandos/release : revision 237.7.833

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/* -*- coding: utf-8; lexical-binding: t -*- */

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/*

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* Mandos password agent - Simple password agent to run Mandos client

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*

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*

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* This file is part of Mandos.

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*

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* Mandos is free software: you can redistribute it and/or modify it

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* under the terms of the GNU General Public License as published by

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* the Free Software Foundation, either version 3 of the License, or

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* (at your option) any later version.

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*

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* Mandos is distributed in the hope that it will be useful, but

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* WITHOUT ANY WARRANTY; without even the implied warranty of

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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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* General Public License for more details.

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*

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* You should have received a copy of the GNU General Public License

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* along with Mandos. If not, see <http://www.gnu.org/licenses/>.

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*

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* Contact the authors at <mandos@recompile.se>.

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*/

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#define _GNU_SOURCE /* pipe2(), O_CLOEXEC, setresgid(),

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setresuid(), asprintf(), getline(),

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basename() */

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#include <inttypes.h> /* uintmax_t, strtoumax(), PRIuMAX,

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PRIdMAX, intmax_t, uint32_t,

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SCNx32, SCNuMAX, SCNxMAX */

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#include <stddef.h> /* size_t, NULL */

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#include <sys/types.h> /* pid_t, uid_t, gid_t, getuid(),

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getpid() */

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#include <stdbool.h> /* bool, true, false */

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#include <signal.h> /* struct sigaction, sigset_t,

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sigemptyset(), sigaddset(),

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SIGCHLD, pthread_sigmask(),

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SIG_BLOCK, SIG_SETMASK, SA_RESTART,

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SA_NOCLDSTOP, sigfillset(), kill(),

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SIGTERM, sigdelset(), SIGKILL,

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NSIG, sigismember(), SA_ONSTACK,

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SIG_DFL, SIG_IGN, SIGINT, SIGQUIT,

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SIGHUP, SIGSTOP, SIG_UNBLOCK */

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#include <unistd.h> /* uid_t, gid_t, close(), pipe2(),

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fork(), _exit(), dup2(),

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STDOUT_FILENO, setresgid(),

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setresuid(), execv(), ssize_t,

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read(), dup3(), getuid(), dup(),

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STDERR_FILENO, pause(), write(),

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rmdir(), unlink(), getpid() */

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#include <stdlib.h> /* EXIT_SUCCESS, EXIT_FAILURE,

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malloc(), free(), realloc(),

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setenv(), calloc(), mkdtemp(),

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mkostemp() */

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#include <iso646.h> /* not, or, and, xor */

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#include <error.h> /* error() */

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#include <sysexits.h> /* EX_USAGE, EX_OSERR, EX_OSFILE */

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#include <errno.h> /* errno, error_t, EACCES,

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ENAMETOOLONG, ENOENT, ENOTDIR,

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ENOMEM, EEXIST, ECHILD, EPERM,

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EAGAIN, EINTR, ENOBUFS, EADDRINUSE,

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ECONNREFUSED, ECONNRESET,

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ETOOMANYREFS, EMSGSIZE, EBADF,

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EINVAL */

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#include <string.h> /* strdup(), memcpy(),

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explicit_bzero(), memset(),

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strcmp(), strlen(), strncpy(),

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memcmp(), basename(), strerror() */

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#include <argz.h> /* argz_create(), argz_count(),

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argz_extract(), argz_next(),

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argz_add() */

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#include <sys/epoll.h> /* epoll_create1(), EPOLL_CLOEXEC,

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epoll_ctl(), EPOLL_CTL_ADD,

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struct epoll_event, EPOLLIN,

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EPOLLRDHUP, EPOLLOUT,

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epoll_pwait() */

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#include <time.h> /* struct timespec, clock_gettime(),

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CLOCK_MONOTONIC */

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#include <argp.h> /* struct argp_option, OPTION_HIDDEN,

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OPTION_ALIAS, struct argp_state,

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ARGP_ERR_UNKNOWN, ARGP_KEY_ARGS,

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struct argp, argp_parse(),

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ARGP_NO_EXIT */

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#include <stdint.h> /* SIZE_MAX, uint32_t */

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#include <sys/mman.h> /* munlock(), mlock() */

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#include <fcntl.h> /* O_CLOEXEC, O_NONBLOCK, fcntl(),

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F_GETFD, F_GETFL, FD_CLOEXEC,

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open(), O_WRONLY, O_NOCTTY,

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O_RDONLY, O_NOFOLLOW */

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#include <sys/wait.h> /* waitpid(), WNOHANG, WIFEXITED(),

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WEXITSTATUS() */

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#include <limits.h> /* PIPE_BUF, NAME_MAX, INT_MAX */

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#include <sys/inotify.h> /* inotify_init1(), IN_NONBLOCK,

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IN_CLOEXEC, inotify_add_watch(),

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IN_CLOSE_WRITE, IN_MOVED_TO,

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IN_MOVED_FROM, IN_DELETE,

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IN_EXCL_UNLINK, IN_ONLYDIR,

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struct inotify_event */

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#include <fnmatch.h> /* fnmatch(), FNM_FILE_NAME */

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#include <stdio.h> /* asprintf(), FILE, stderr, fopen(),

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fclose(), getline(), sscanf(),

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feof(), ferror(), rename(),

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fdopen(), fprintf(), fscanf() */

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#include <glib.h> /* GKeyFile, g_key_file_free(), g_key_file_new(),

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GError, g_key_file_load_from_file(),

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G_KEY_FILE_NONE, TRUE, G_FILE_ERROR_NOENT,

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g_key_file_get_string(), guint64,

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g_key_file_get_uint64(),

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G_KEY_FILE_ERROR_KEY_NOT_FOUND, gconstpointer,

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g_assert_true(), g_assert_nonnull(),

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g_assert_null(), g_assert_false(),

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g_assert_cmpint(), g_assert_cmpuint(),

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g_test_skip(), g_assert_cmpstr(),

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g_test_message(), g_test_init(), g_test_add(),

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g_test_run(), GOptionContext,

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g_option_context_new(),

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g_option_context_set_help_enabled(), FALSE,

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g_option_context_set_ignore_unknown_options(),

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gboolean, GOptionEntry, G_OPTION_ARG_NONE,

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g_option_context_add_main_entries(),

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g_option_context_parse(),

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g_option_context_free(), g_error() */

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#include <sys/un.h> /* struct sockaddr_un, SUN_LEN */

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#include <sys/socket.h> /* AF_LOCAL, socket(), PF_LOCAL,

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SOCK_DGRAM, SOCK_NONBLOCK,

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SOCK_CLOEXEC, connect(),

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struct sockaddr, socklen_t,

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shutdown(), SHUT_RD, send(),

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MSG_NOSIGNAL, bind(), recv(),

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socketpair() */

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#include <glob.h> /* globfree(), glob_t, glob(),

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GLOB_ERR, GLOB_NOSORT, GLOB_MARK,

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GLOB_ABORTED, GLOB_NOMATCH,

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GLOB_NOSPACE */

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/* End of includes */

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/* Start of declarations of private types and functions */

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/* microseconds of CLOCK_MONOTONIC absolute time; 0 means unset */

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typedef uintmax_t mono_microsecs;

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/* "task_queue" - A queue of tasks to be run */

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typedef struct {

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struct task_struct *tasks; /* Tasks in this queue */

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size_t length; /* Number of tasks */

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/* Memory allocated for "tasks", in bytes */

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size_t allocated;

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/* Time when this queue should be run, at the latest */

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mono_microsecs next_run;

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} __attribute__((designated_init)) task_queue;

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/* "task_func" - A function type for task functions

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I.e. functions for the code which runs when a task is run, all have

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this type */

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typedef void (task_func) (const struct task_struct,

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task_queue *const)

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__attribute__((nonnull));

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/* "buffer" - A data buffer for a growing array of bytes

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Used for the "password" variable */

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typedef struct {

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char *data;

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size_t length;

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size_t allocated;

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} __attribute__((designated_init)) buffer;

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/* "string_set" - A set type which can contain strings

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Used by the "cancelled_filenames" variable */

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typedef struct {

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char *argz; /* Do not access these except in */

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size_t argz_len; /* the string_set_* functions */

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} __attribute__((designated_init)) string_set;

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/* "task_context" - local variables for tasks

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This data structure distinguishes between different tasks which are

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using the same function. This data structure is passed to every

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task function when each task is run.

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Note that not every task uses every struct member. */

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typedef struct task_struct {

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task_func *const func; /* The function run by this task */

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char *const question_filename; /* The question file */

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const pid_t pid; /* Mandos client process ID */

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const int epoll_fd; /* The epoll set file descriptor */

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bool *const quit_now; /* Set to true on fatal errors */

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const int fd; /* General purpose file descriptor */

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bool *const mandos_client_exited; /* Set true when client exits */

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buffer *const password; /* As read from client process */

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bool *const password_is_read; /* "password" is done growing */

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char *filename; /* General purpose file name */

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/* A set of strings of all the file names of questions which have

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been cancelled for any reason; tasks pertaining to these question

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files should not be run */

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string_set *const cancelled_filenames;

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const mono_microsecs notafter; /* "NotAfter" from question file */

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/* Updated before each queue run; is compared with queue.next_run */

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const mono_microsecs *const current_time;

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} __attribute__((designated_init)) task_context;

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/* Declare all our functions here so we can define them in any order

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below. Note: test functions are *not* declared here, they are

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declared in the test section. */

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__attribute__((warn_unused_result))

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static bool should_only_run_tests(int *, char **[]);

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__attribute__((warn_unused_result, cold))

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static bool run_tests(int, char *[]);

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static void handle_sigchld(__attribute__((unused)) int sig){}

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__attribute__((warn_unused_result, malloc))

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task_queue *create_queue(void);

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__attribute__((nonnull, warn_unused_result))

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bool add_to_queue(task_queue *const, const task_context);

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__attribute__((nonnull))

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void cleanup_task(const task_context *const);

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__attribute__((nonnull))

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void cleanup_queue(task_queue *const *const);

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__attribute__((pure, nonnull, warn_unused_result))

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bool queue_has_question(const task_queue *const);

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__attribute__((nonnull))

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void cleanup_close(const int *const);

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__attribute__((nonnull))

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void cleanup_string(char *const *const);

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__attribute__((nonnull))

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void cleanup_buffer(buffer *const);

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__attribute__((pure, nonnull, warn_unused_result))

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bool string_set_contains(const string_set, const char *const);

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__attribute__((nonnull, warn_unused_result))

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bool string_set_add(string_set *const, const char *const);

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__attribute__((nonnull))

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void string_set_clear(string_set *);

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void string_set_swap(string_set *const, string_set *const);

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__attribute__((nonnull, warn_unused_result))

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bool start_mandos_client(task_queue *const, const int, bool *const,

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bool *const, buffer *const, bool *const,

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const struct sigaction *const,

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const sigset_t, const char *const,

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const uid_t, const gid_t,

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const char *const *const);

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__attribute__((nonnull))

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task_func wait_for_mandos_client_exit;

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__attribute__((nonnull))

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task_func read_mandos_client_output;

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__attribute__((warn_unused_result))

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bool add_inotify_dir_watch(task_queue *const, const int, bool *const,

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buffer *const, const char *const,

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string_set *, const mono_microsecs *const,

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bool *const, bool *const);

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__attribute__((nonnull))

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task_func read_inotify_event;

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__attribute__((nonnull))

256

task_func open_and_parse_question;

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__attribute__((nonnull))

258

task_func cancel_old_question;

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__attribute__((nonnull))

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task_func connect_question_socket;

261

__attribute__((nonnull))

262

task_func send_password_to_socket;

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__attribute__((warn_unused_result))

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bool add_existing_questions(task_queue *const, const int,

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buffer *const, string_set *,

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const mono_microsecs *const,

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bool *const, bool *const,

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const char *const);

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__attribute__((nonnull, warn_unused_result))

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bool wait_for_event(const int, const mono_microsecs,

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const mono_microsecs);

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bool run_queue(task_queue **const, string_set *const, bool *const);

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bool clear_all_fds_from_epoll_set(const int);

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mono_microsecs get_current_time(void);

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__attribute__((nonnull, warn_unused_result))

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bool setup_signal_handler(struct sigaction *const);

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__attribute__((nonnull))

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bool restore_signal_handler(const struct sigaction *const);

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__attribute__((nonnull, warn_unused_result))

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bool block_sigchld(sigset_t *const);

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__attribute__((nonnull))

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bool restore_sigmask(const sigset_t *const);

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__attribute__((nonnull))

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bool parse_arguments(int, char *[], const bool, char **, char **,

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uid_t *const , gid_t *const, char **, size_t *);

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/* End of declarations of private types and functions */

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/* Start of "main" section; this section LACKS TESTS!

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Code here should be as simple as possible. */

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/* These are required to be global by Argp */

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const char *argp_program_version = "password-agent " VERSION;

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const char *argp_program_bug_address = "<mandos@recompile.se>";

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297

int main(int argc, char *argv[]){

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/* If the --test option is passed, skip all normal operations and

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instead only run the run_tests() function, which also does all

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its own option parsing, so we don't have to do anything here. */

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if(should_only_run_tests(&argc, &argv)){

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if(run_tests(argc, argv)){

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return EXIT_SUCCESS; /* All tests successful */

305

}

306

return EXIT_FAILURE; /* Some test(s) failed */

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}

308

309

__attribute__((cleanup(cleanup_string)))

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char *agent_directory = NULL;

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__attribute__((cleanup(cleanup_string)))

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char *helper_directory = NULL;

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315

uid_t user = 0;

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gid_t group = 0;

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__attribute__((cleanup(cleanup_string)))

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char *mandos_argz = NULL;

320

size_t mandos_argz_length = 0;

321

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if(not parse_arguments(argc, argv, true, &agent_directory,

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&helper_directory, &user, &group,

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&mandos_argz, &mandos_argz_length)){

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/* This should never happen, since "true" is passed as the third

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argument to parse_arguments() above, which should make

327

argp_parse() call exit() if any parsing error occurs. */

328

error(EX_USAGE, errno, "Failed to parse arguments");

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}

330

331

const char default_agent_directory[] = "/run/systemd/ask-password";

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const char default_helper_directory[]

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= "/lib/mandos/plugin-helpers";

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const char *const default_argv[]

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= {"/lib/mandos/plugins.d/mandos-client", NULL };

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/* Set variables to default values if unset */

338

if(agent_directory == NULL){

339

agent_directory = strdup(default_agent_directory);

340

if(agent_directory == NULL){

341

error(EX_OSERR, errno, "Failed strdup()");

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}

343

}

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if(helper_directory == NULL){

345

helper_directory = strdup(default_helper_directory);

346

if(helper_directory == NULL){

347

error(EX_OSERR, errno, "Failed strdup()");

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}

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}

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if(user == 0){

351

user = 65534; /* nobody */

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}

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if(group == 0){

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group = 65534; /* nogroup */

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}

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/* If parse_opt did not create an argz vector, create one with

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default values */

358

if(mandos_argz == NULL){

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#ifdef __GNUC__

360

#pragma GCC diagnostic push

361

/* argz_create() takes a non-const argv for some unknown reason -

362

argz_create() isn't modifying the strings, just copying them.

363

Therefore, this cast to non-const should be safe. */

364

#pragma GCC diagnostic ignored "-Wcast-qual"

365

#endif

366

errno = argz_create((char *const *)default_argv, &mandos_argz,

367

&mandos_argz_length);

368

#ifdef __GNUC__

369

#pragma GCC diagnostic pop

370

#endif

371

if(errno != 0){

372

error(EX_OSERR, errno, "Failed argz_create()");

373

}

374

}

375

/* Use argz vector to create a normal argv, usable by execv() */

376

377

char **mandos_argv = malloc((argz_count(mandos_argz,

378

mandos_argz_length)

379

+ 1) * sizeof(char *));

380

if(mandos_argv == NULL){

381

error_t saved_errno = errno;

382

free(mandos_argz);

383

error(EX_OSERR, saved_errno, "Failed malloc()");

384

}

385

argz_extract(mandos_argz, mandos_argz_length, mandos_argv);

386

387

sigset_t orig_sigmask;

388

if(not block_sigchld(&orig_sigmask)){

389

return EX_OSERR;

390

}

391

392

struct sigaction old_sigchld_action;

393

if(not setup_signal_handler(&old_sigchld_action)){

394

return EX_OSERR;

395

}

396

397

mono_microsecs current_time = 0;

398

399

bool mandos_client_exited = false;

400

bool quit_now = false;

401

__attribute__((cleanup(cleanup_close)))

402

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

403

if(epoll_fd < 0){

404

error(EX_OSERR, errno, "Failed to create epoll set fd");

405

}

406

__attribute__((cleanup(cleanup_queue)))

407

task_queue *queue = create_queue();

408

if(queue == NULL){

409

error(EX_OSERR, errno, "Failed to create task queue");

410

}

411

412

__attribute__((cleanup(cleanup_buffer)))

413

buffer password = {};

414

bool password_is_read = false;

415

416

__attribute__((cleanup(string_set_clear)))

417

string_set cancelled_filenames = {};

418

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/* Add tasks to queue */

420

if(not start_mandos_client(queue, epoll_fd, &mandos_client_exited,

421

&quit_now, &password, &password_is_read,

422

&old_sigchld_action, orig_sigmask,

423

helper_directory, user, group,

424

(const char *const *)mandos_argv)){

425

return EX_OSERR; /* Error has already been printed */

426

}

427

/* These variables were only for start_mandos_client() and are not

428

needed anymore */

429

free(mandos_argv);

430

free(mandos_argz);

431

mandos_argz = NULL;

432

if(not add_inotify_dir_watch(queue, epoll_fd, &quit_now, &password,

433

agent_directory, &cancelled_filenames,

434

&current_time, &mandos_client_exited,

435

&password_is_read)){

436

switch(errno){ /* Error has already been printed */

437

case EACCES:

438

case ENAMETOOLONG:

439

case ENOENT:

440

case ENOTDIR:

441

return EX_OSFILE;

442

default:

443

return EX_OSERR;

444

}

445

}

446

if(not add_existing_questions(queue, epoll_fd, &password,

447

&cancelled_filenames, &current_time,

448

&mandos_client_exited,

449

&password_is_read, agent_directory)){

450

return EXIT_FAILURE; /* Error has already been printed */

451

}

452

453

/* Run queue */

454

do {

455

current_time = get_current_time();

456

if(not wait_for_event(epoll_fd, queue->next_run, current_time)){

457

const error_t saved_errno = errno;

458

error(EXIT_FAILURE, saved_errno, "Failure while waiting for"

459

" events");

460

}

461

462

current_time = get_current_time();

463

if(not run_queue(&queue, &cancelled_filenames, &quit_now)){

464

const error_t saved_errno = errno;

465

error(EXIT_FAILURE, saved_errno, "Failure while running queue");

466

}

467

468

/* When no tasks about questions are left in the queue, break out

469

of the loop (and implicitly exit the program) */

470

} while(queue_has_question(queue));

471

472

restore_signal_handler(&old_sigchld_action);

473

restore_sigmask(&orig_sigmask);

474

475

return EXIT_SUCCESS;

476

}

477

478

__attribute__((warn_unused_result))

479

mono_microsecs get_current_time(void){

480

struct timespec currtime;

481

if(clock_gettime(CLOCK_MONOTONIC, &currtime) != 0){

482

error(0, errno, "Failed to get current time");

483

return 0;

484

}

485

return ((mono_microsecs)currtime.tv_sec * 1000000) /* seconds */

486

+ ((mono_microsecs)currtime.tv_nsec / 1000); /* nanoseconds */

487

}

488

489

/* End of "main" section */

490

491

/* Start of regular code section; ALL this code has tests */

492

493

__attribute__((nonnull))

494

bool parse_arguments(int argc, char *argv[], const bool exit_failure,

495

char **agent_directory, char **helper_directory,

496

uid_t *const user, gid_t *const group,

497

char **mandos_argz, size_t *mandos_argz_length){

498

499

const struct argp_option options[] = {

500

{ .name="agent-directory",.key='d', .arg="DIRECTORY",

501

.doc="Systemd password agent directory" },

502

{ .name="helper-directory",.key=128, .arg="DIRECTORY",

503

.doc="Mandos Client password helper directory" },

504

{ .name="plugin-helper-dir", .key=129, /* From plugin-runner */

505

.flags=OPTION_HIDDEN | OPTION_ALIAS },

506

{ .name="user", .key='u', .arg="USERID",

507

.doc="User ID the Mandos Client will use as its unprivileged"

508

" user" },

509

{ .name="userid", .key=130, /* From plugin--runner */

510

.flags=OPTION_HIDDEN | OPTION_ALIAS },

511

{ .name="group", .key='g', .arg="GROUPID",

512

.doc="Group ID the Mandos Client will use as its unprivileged"

513

" group" },

514

{ .name="groupid", .key=131, /* From plugin--runner */

515

.flags=OPTION_HIDDEN | OPTION_ALIAS },

516

{ .name="test", .key=255, /* See should_only_run_tests() */

517

.doc="Skip normal operation, and only run self-tests. See"

518

" --test --help.", .group=10, },

519

{ NULL },

520

};

521

522

__attribute__((nonnull(3)))

523

error_t parse_opt(int key, char *arg, struct argp_state *state){

524

errno = 0;

525

switch(key){

526

case 'd': /* --agent-directory */

527

*agent_directory = strdup(arg);

528

break;

529

case 128: /* --helper-directory */

530

case 129: /* --plugin-helper-dir */

531

*helper_directory = strdup(arg);

532

break;

533

case 'u': /* --user */

534

case 130: /* --userid */

535

{

536

char *tmp;

537

uintmax_t tmp_id = 0;

538

errno = 0;

539

tmp_id = (uid_t)strtoumax(arg, &tmp, 10);

540

if(errno != 0 or tmp == arg or *tmp != '\0'

541

or tmp_id != (uid_t)tmp_id or (uid_t)tmp_id == 0){

542

return ARGP_ERR_UNKNOWN;

543

}

544

*user = (uid_t)tmp_id;

545

errno = 0;

546

break;

547

}

548

case 'g': /* --group */

549

case 131: /* --groupid */

550

{

551

char *tmp;

552

uintmax_t tmp_id = 0;

553

errno = 0;

554

tmp_id = (uid_t)strtoumax(arg, &tmp, 10);

555

if(errno != 0 or tmp == arg or *tmp != '\0'

556

or tmp_id != (gid_t)tmp_id or (gid_t)tmp_id == 0){

557

return ARGP_ERR_UNKNOWN;

558

}

559

*group = (gid_t)tmp_id;

560

errno = 0;

561

break;

562

}

563

case ARGP_KEY_ARGS:

564

/* Copy arguments into argz vector */

565

return argz_create(state->argv + state->next, mandos_argz,

566

mandos_argz_length);

567

default:

568

return ARGP_ERR_UNKNOWN;

569

}

570

return errno;

571

}

572

573

const struct argp argp = {

574

.options=options,

575

.parser=parse_opt,

576

.args_doc="[MANDOS_CLIENT [OPTION...]]\n--test",

577

.doc = "Mandos password agent -- runs Mandos client as a"

578

" systemd password agent",

579

};

580

581

errno = argp_parse(&argp, argc, argv,

582

exit_failure ? 0 : ARGP_NO_EXIT, NULL, NULL);

583

584

return errno == 0;

585

}

586

587

__attribute__((nonnull, warn_unused_result))

588

bool block_sigchld(sigset_t *const orig_sigmask){

589

sigset_t sigchld_sigmask;

590

if(sigemptyset(&sigchld_sigmask) < 0){

591

error(0, errno, "Failed to empty signal set");

592

return false;

593

}

594

if(sigaddset(&sigchld_sigmask, SIGCHLD) < 0){

595

error(0, errno, "Failed to add SIGCHLD to signal set");

596

return false;

597

}

598

if(pthread_sigmask(SIG_BLOCK, &sigchld_sigmask, orig_sigmask) != 0){

599

error(0, errno, "Failed to block SIGCHLD signal");

600

return false;

601

}

602

return true;

603

}

604

605

__attribute__((nonnull, warn_unused_result, const))

606

bool restore_sigmask(const sigset_t *const orig_sigmask){

607

if(pthread_sigmask(SIG_SETMASK, orig_sigmask, NULL) != 0){

608

error(0, errno, "Failed to restore blocked signals");

609

return false;

610

}

611

return true;

612

}

613

614

__attribute__((nonnull, warn_unused_result))

615

bool setup_signal_handler(struct sigaction *const old_sigchld_action){

616

struct sigaction sigchld_action = {

617

.sa_handler=handle_sigchld,

618

.sa_flags=SA_RESTART | SA_NOCLDSTOP,

619

};

620

/* Set all signals in "sa_mask" struct member; this makes all

621

signals automatically blocked during signal handler */

622

if(sigfillset(&sigchld_action.sa_mask) != 0){

623

error(0, errno, "Failed to do sigfillset()");

624

return false;

625

}

626

if(sigaction(SIGCHLD, &sigchld_action, old_sigchld_action) != 0){

627

error(0, errno, "Failed to set SIGCHLD signal handler");

628

return false;

629

}

630

return true;

631

}

632

633

__attribute__((nonnull, warn_unused_result))

634

bool restore_signal_handler(const struct sigaction *const

635

old_sigchld_action){

636

if(sigaction(SIGCHLD, old_sigchld_action, NULL) != 0){

637

error(0, errno, "Failed to restore signal handler");

638

return false;

639

}

640

return true;

641

}

642

643

__attribute__((warn_unused_result, malloc))

644

task_queue *create_queue(void){

645

task_queue *queue = malloc(sizeof(task_queue));

646

if(queue){

647

queue->tasks = NULL;

648

queue->length = 0;

649

queue->allocated = 0;

650

queue->next_run = 0;

651

}

652

return queue;

653

}

654

655

__attribute__((nonnull, warn_unused_result))

656

bool add_to_queue(task_queue *const queue, const task_context task){

657

if((queue->length + 1) > (SIZE_MAX / sizeof(task_context))){

658

/* overflow */

659

error(0, ENOMEM, "Failed to allocate %" PRIuMAX

660

" tasks for queue->tasks", (uintmax_t)(queue->length + 1));

661

errno = ENOMEM;

662

return false;

663

}

664

const size_t needed_size = sizeof(task_context)*(queue->length + 1);

665

if(needed_size > (queue->allocated)){

666

task_context *const new_tasks = realloc(queue->tasks,

667

needed_size);

668

if(new_tasks == NULL){

669

error(0, errno, "Failed to allocate %" PRIuMAX

670

" bytes for queue->tasks", (uintmax_t)needed_size);

671

return false;

672

}

673

queue->tasks = new_tasks;

674

queue->allocated = needed_size;

675

}

676

/* Using memcpy here is necessary because doing */

677

/* queue->tasks[queue->length++] = task; */

678

/* would violate const-ness of task members */

679

memcpy(&(queue->tasks[queue->length++]), &task,

680

sizeof(task_context));

681

return true;

682

}

683

684

__attribute__((nonnull))

685

void cleanup_task(const task_context *const task){

686

const error_t saved_errno = errno;

687

/* free and close all task data */

688

free(task->question_filename);

689

if(task->filename != task->question_filename){

690

free(task->filename);

691

}

692

if(task->pid > 0){

693

kill(task->pid, SIGTERM);

694

}

695

if(task->fd > 0){

696

close(task->fd);

697

}

698

errno = saved_errno;

699

}

700

701

__attribute__((nonnull))

702

void free_queue(task_queue *const queue){

703

free(queue->tasks);

704

free(queue);

705

}

706

707

__attribute__((nonnull))

708

void cleanup_queue(task_queue *const *const queue){

709

if(*queue == NULL){

710

return;

711

}

712

for(size_t i = 0; i < (*queue)->length; i++){

713

const task_context *const task = ((*queue)->tasks)+i;

714

cleanup_task(task);

715

}

716

free_queue(*queue);

717

}

718

719

__attribute__((pure, nonnull, warn_unused_result))

720

bool queue_has_question(const task_queue *const queue){

721

for(size_t i=0; i < queue->length; i++){

722

if(queue->tasks[i].question_filename != NULL){

723

return true;

724

}

725

}

726

return false;

727

}

728

729

__attribute__((nonnull))

730

void cleanup_close(const int *const fd){

731

const error_t saved_errno = errno;

732

close(*fd);

733

errno = saved_errno;

734

}

735

736

__attribute__((nonnull))

737

void cleanup_string(char *const *const ptr){

738

free(*ptr);

739

}

740

741

__attribute__((nonnull))

742

void cleanup_buffer(buffer *buf){

743

if(buf->allocated > 0){

744

#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)

745

explicit_bzero(buf->data, buf->allocated);

746

#else

747

memset(buf->data, '\0', buf->allocated);

748

#endif

749

}

750

if(buf->data != NULL){

751

if(munlock(buf->data, buf->allocated) != 0){

752

error(0, errno, "Failed to unlock memory of old buffer");

753

}

754

free(buf->data);

755

buf->data = NULL;

756

}

757

buf->length = 0;

758

buf->allocated = 0;

759

}

760

761

__attribute__((pure, nonnull, warn_unused_result))

762

bool string_set_contains(const string_set set, const char *const str){

763

for(const char *s = set.argz; s != NULL and set.argz_len > 0;

764

s = argz_next(set.argz, set.argz_len, s)){

765

if(strcmp(s, str) == 0){

766

return true;

767

}

768

}

769

return false;

770

}

771

772

__attribute__((nonnull, warn_unused_result))

773

bool string_set_add(string_set *const set, const char *const str){

774

if(string_set_contains(*set, str)){

775

return true;

776

}

777

error_t error = argz_add(&set->argz, &set->argz_len, str);

778

if(error == 0){

779

return true;

780

}

781

errno = error;

782

return false;

783

}

784

785

__attribute__((nonnull))

786

void string_set_clear(string_set *set){

787

free(set->argz);

788

set->argz = NULL;

789

set->argz_len = 0;

790

}

791

792

__attribute__((nonnull))

793

void string_set_swap(string_set *const set1, string_set *const set2){

794

/* Swap contents of two string sets */

795

{

796

char *const tmp_argz = set1->argz;

797

set1->argz = set2->argz;

798

set2->argz = tmp_argz;

799

}

800

{

801

const size_t tmp_argz_len = set1->argz_len;

802

set1->argz_len = set2->argz_len;

803

set2->argz_len = tmp_argz_len;

804

}

805

}

806

807

__attribute__((nonnull, warn_unused_result))

808

bool start_mandos_client(task_queue *const queue,

809

const int epoll_fd,

810

bool *const mandos_client_exited,

811

bool *const quit_now, buffer *const password,

812

bool *const password_is_read,

813

const struct sigaction *const

814

old_sigchld_action, const sigset_t sigmask,

815

const char *const helper_directory,

816

const uid_t user, const gid_t group,

817

const char *const *const argv){

818

int pipefds[2];

819

if(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK) != 0){

820

error(0, errno, "Failed to pipe2(..., O_CLOEXEC | O_NONBLOCK)");

821

return false;

822

}

823

824

const pid_t pid = fork();

825

if(pid == 0){

826

if(not restore_signal_handler(old_sigchld_action)){

827

_exit(EXIT_FAILURE);

828

}

829

if(not restore_sigmask(&sigmask)){

830

_exit(EXIT_FAILURE);

831

}

832

if(close(pipefds[0]) != 0){

833

error(0, errno, "Failed to close() parent pipe fd");

834

_exit(EXIT_FAILURE);

835

}

836

if(dup2(pipefds[1], STDOUT_FILENO) == -1){

837

error(0, errno, "Failed to dup2() pipe fd to stdout");

838

_exit(EXIT_FAILURE);

839

}

840

if(close(pipefds[1]) != 0){

841

error(0, errno, "Failed to close() old child pipe fd");

842

_exit(EXIT_FAILURE);

843

}

844

if(setenv("MANDOSPLUGINHELPERDIR", helper_directory, 1) != 0){

845

error(0, errno, "Failed to setenv(\"MANDOSPLUGINHELPERDIR\","

846

" \"%s\", 1)", helper_directory);

847

_exit(EXIT_FAILURE);

848

}

849

if(group != 0 and setresgid(group, 0, 0) == -1){

850

error(0, errno, "Failed to setresgid(-1, %" PRIuMAX ", %"

851

PRIuMAX")", (uintmax_t)group, (uintmax_t)group);

852

_exit(EXIT_FAILURE);

853

}

854

if(user != 0 and setresuid(user, 0, 0) == -1){

855

error(0, errno, "Failed to setresuid(-1, %" PRIuMAX ", %"

856

PRIuMAX")", (uintmax_t)user, (uintmax_t)user);

857

_exit(EXIT_FAILURE);

858

}

859

#ifdef __GNUC__

860

#pragma GCC diagnostic push

861

/* For historical reasons, the "argv" argument to execv() is not

862

const, but it is safe to override this. */

863

#pragma GCC diagnostic ignored "-Wcast-qual"

864

#endif

865

execv(argv[0], (char **)argv);

866

#ifdef __GNUC__

867

#pragma GCC diagnostic pop

868

#endif

869

error(0, errno, "execv(\"%s\", ...) failed", argv[0]);

870

_exit(EXIT_FAILURE);

871

}

872

close(pipefds[1]);

873

874

if(pid == -1){

875

error(0, errno, "Failed to fork()");

876

close(pipefds[0]);

877

return false;

878

}

879

880

if(not add_to_queue(queue, (task_context){

881

.func=wait_for_mandos_client_exit,

882

.pid=pid,

883

.mandos_client_exited=mandos_client_exited,

884

.quit_now=quit_now,

885

})){

886

error(0, errno, "Failed to add wait_for_mandos_client to queue");

887

close(pipefds[0]);

888

return false;

889

}

890

891

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, pipefds[0],

892

&(struct epoll_event)

893

{ .events=EPOLLIN | EPOLLRDHUP });

894

if(ret != 0 and errno != EEXIST){

895

error(0, errno, "Failed to add file descriptor to epoll set");

896

close(pipefds[0]);

897

return false;

898

}

899

900

return add_to_queue(queue, (task_context){

901

.func=read_mandos_client_output,

902

.epoll_fd=epoll_fd,

903

.fd=pipefds[0],

904

.quit_now=quit_now,

905

.password=password,

906

.password_is_read=password_is_read,

907

});

908

}

909

910

__attribute__((nonnull))

911

void wait_for_mandos_client_exit(const task_context task,

912

task_queue *const queue){

913

const pid_t pid = task.pid;

914

bool *const mandos_client_exited = task.mandos_client_exited;

915

bool *const quit_now = task.quit_now;

916

917

int status;

918

switch(waitpid(pid, &status, WNOHANG)){

919

case 0: /* Not exited yet */

920

if(not add_to_queue(queue, task)){

921

error(0, errno, "Failed to add myself to queue");

922

*quit_now = true;

923

}

924

break;

925

case -1: /* Error */

926

error(0, errno, "waitpid(%" PRIdMAX ") failed", (intmax_t)pid);

927

if(errno != ECHILD){

928

kill(pid, SIGTERM);

929

}

930

*quit_now = true;

931

break;

932

default: /* Has exited */

933

*mandos_client_exited = true;

934

if((not WIFEXITED(status))

935

or (WEXITSTATUS(status) != EXIT_SUCCESS)){

936

error(0, 0, "Mandos client failed or was killed");

937

*quit_now = true;

938

}

939

}

940

}

941

942

__attribute__((nonnull))

943

void read_mandos_client_output(const task_context task,

944

task_queue *const queue){

945

buffer *const password = task.password;

946

bool *const quit_now = task.quit_now;

947

bool *const password_is_read = task.password_is_read;

948

const int fd = task.fd;

949

const int epoll_fd = task.epoll_fd;

950

951

const size_t new_potential_size = (password->length + PIPE_BUF);

952

if(password->allocated < new_potential_size){

953

char *const new_buffer = calloc(new_potential_size, 1);

954

if(new_buffer == NULL){

955

error(0, errno, "Failed to allocate %" PRIuMAX

956

" bytes for password", (uintmax_t)new_potential_size);

957

*quit_now = true;

958

close(fd);

959

return;

960

}

961

if(mlock(new_buffer, new_potential_size) != 0){

962

/* Warn but do not treat as fatal error */

963

if(errno != EPERM and errno != ENOMEM){

964

error(0, errno, "Failed to lock memory for password");

965

}

966

}

967

if(password->length > 0){

968

memcpy(new_buffer, password->data, password->length);

969

#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)

970

explicit_bzero(password->data, password->allocated);

971

#else

972

memset(password->data, '\0', password->allocated);

973

#endif

974

}

975

if(password->data != NULL){

976

if(munlock(password->data, password->allocated) != 0){

977

error(0, errno, "Failed to unlock memory of old buffer");

978

}

979

free(password->data);

980

}

981

password->data = new_buffer;

982

password->allocated = new_potential_size;

983

}

984

985

const ssize_t read_length = read(fd, password->data

986

+ password->length, PIPE_BUF);

987

988

if(read_length == 0){ /* EOF */

989

*password_is_read = true;

990

close(fd);

991

return;

992

}

993

if(read_length < 0 and errno != EAGAIN){ /* Actual error */

994

error(0, errno, "Failed to read password from Mandos client");

995

*quit_now = true;

996

close(fd);

997

return;

998

}

999

if(read_length > 0){ /* Data has been read */

1000

password->length += (size_t)read_length;

1001

}

1002

1003

/* Either data was read, or EAGAIN was indicated, meaning no data

1004

available yet */

1005

1006

/* Re-add the fd to the epoll set */

1007

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1008

&(struct epoll_event)

1009

{ .events=EPOLLIN | EPOLLRDHUP });

1010

if(ret != 0 and errno != EEXIST){

1011

error(0, errno, "Failed to re-add file descriptor to epoll set");

1012

*quit_now = true;

1013

close(fd);

1014

return;

1015

}

1016

1017

/* Re-add myself to the queue */

1018

if(not add_to_queue(queue, task)){

1019

error(0, errno, "Failed to add myself to queue");

1020

*quit_now = true;

1021

close(fd);

1022

}

1023

}

1024

1025

__attribute__((nonnull, warn_unused_result))

1026

bool add_inotify_dir_watch(task_queue *const queue,

1027

const int epoll_fd, bool *const quit_now,

1028

buffer *const password,

1029

const char *const dir,

1030

string_set *cancelled_filenames,

1031

const mono_microsecs *const current_time,

1032

bool *const mandos_client_exited,

1033

bool *const password_is_read){

1034

const int fd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);

1035

if(fd == -1){

1036

error(0, errno, "Failed to create inotify instance");

1037

return false;

1038

}

1039

1040

if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE | IN_MOVED_TO

1041

| IN_MOVED_FROM| IN_DELETE | IN_EXCL_UNLINK

1042

| IN_ONLYDIR)

1043

== -1){

1044

error(0, errno, "Failed to create inotify watch on %s", dir);

1045

return false;

1046

}

1047

1048

/* Add the inotify fd to the epoll set */

1049

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1050

&(struct epoll_event)

1051

{ .events=EPOLLIN | EPOLLRDHUP });

1052

if(ret != 0 and errno != EEXIST){

1053

error(0, errno, "Failed to add file descriptor to epoll set");

1054

close(fd);

1055

return false;

1056

}

1057

1058

const task_context read_inotify_event_task = {

1059

.func=read_inotify_event,

1060

.epoll_fd=epoll_fd,

1061

.quit_now=quit_now,

1062

.password=password,

1063

.fd=fd,

1064

.filename=strdup(dir),

1065

.cancelled_filenames=cancelled_filenames,

1066

.current_time=current_time,

1067

.mandos_client_exited=mandos_client_exited,

1068

.password_is_read=password_is_read,

1069

};

1070

if(read_inotify_event_task.filename == NULL){

1071

error(0, errno, "Failed to strdup(\"%s\")", dir);

1072

close(fd);

1073

return false;

1074

}

1075

1076

return add_to_queue(queue, read_inotify_event_task);

1077

}

1078

1079

__attribute__((nonnull))

1080

void read_inotify_event(const task_context task,

1081

task_queue *const queue){

1082

const int fd = task.fd;

1083

const int epoll_fd = task.epoll_fd;

1084

char *const filename = task.filename;

1085

bool *quit_now = task.quit_now;

1086

buffer *const password = task.password;

1087

string_set *const cancelled_filenames = task.cancelled_filenames;

1088

const mono_microsecs *const current_time = task.current_time;

1089

bool *const mandos_client_exited = task.mandos_client_exited;

1090

bool *const password_is_read = task.password_is_read;

1091

1092

/* "sufficient to read at least one event." - inotify(7) */

1093

const size_t ievent_size = (sizeof(struct inotify_event)

1094

+ NAME_MAX + 1);

1095

struct {

1096

struct inotify_event event;

1097

char name_buffer[NAME_MAX + 1];

1098

} ievent_buffer;

1099

struct inotify_event *const ievent = &ievent_buffer.event;

1100

1101

#if defined(__GNUC__) and __GNUC__ >= 7

1102

#pragma GCC diagnostic push

1103

/* ievent is pointing into a struct which is of sufficient size */

1104

#pragma GCC diagnostic ignored "-Wstringop-overflow"

1105

#endif

1106

const ssize_t read_length = read(fd, ievent, ievent_size);

1107

#if defined(__GNUC__) and __GNUC__ >= 7

1108

#pragma GCC diagnostic pop

1109

#endif

1110

if(read_length == 0){ /* EOF */

1111

error(0, 0, "Got EOF from inotify fd for directory %s", filename);

1112

*quit_now = true;

1113

cleanup_task(&task);

1114

return;

1115

}

1116

if(read_length < 0 and errno != EAGAIN){ /* Actual error */

1117

error(0, errno, "Failed to read from inotify fd for directory %s",

1118

filename);

1119

*quit_now = true;

1120

cleanup_task(&task);

1121

return;

1122

}

1123

if(read_length > 0 /* Data has been read */

1124

and fnmatch("ask.*", ievent->name, FNM_FILE_NAME) == 0){

1125

char *question_filename = NULL;

1126

const ssize_t question_filename_length

1127

= asprintf(&question_filename, "%s/%s", filename, ievent->name);

1128

if(question_filename_length < 0){

1129

error(0, errno, "Failed to create file name from directory name"

1130

" %s and file name %s", filename, ievent->name);

1131

} else {

1132

if(ievent->mask & (IN_CLOSE_WRITE | IN_MOVED_TO)){

1133

if(not add_to_queue(queue, (task_context){

1134

.func=open_and_parse_question,

1135

.epoll_fd=epoll_fd,

1136

.question_filename=question_filename,

1137

.filename=question_filename,

1138

.password=password,

1139

.cancelled_filenames=cancelled_filenames,

1140

.current_time=current_time,

1141

.mandos_client_exited=mandos_client_exited,

1142

.password_is_read=password_is_read,

1143

})){

1144

error(0, errno, "Failed to add open_and_parse_question task"

1145

" for file name %s to queue", filename);

1146

} else {

1147

/* Force the added task (open_and_parse_question) to run

1148

immediately */

1149

queue->next_run = 1;

1150

}

1151

} else if(ievent->mask & (IN_MOVED_FROM | IN_DELETE)){

1152

if(not string_set_add(cancelled_filenames,

1153

question_filename)){

1154

error(0, errno, "Could not add question %s to"

1155

" cancelled_questions", question_filename);

1156

*quit_now = true;

1157

free(question_filename);

1158

cleanup_task(&task);

1159

return;

1160

}

1161

free(question_filename);

1162

}

1163

}

1164

}

1165

1166

/* Either data was read, or EAGAIN was indicated, meaning no data

1167

available yet */

1168

1169

/* Re-add myself to the queue */

1170

if(not add_to_queue(queue, task)){

1171

error(0, errno, "Failed to re-add read_inotify_event(%s) to"

1172

" queue", filename);

1173

*quit_now = true;

1174

cleanup_task(&task);

1175

return;

1176

}

1177

1178

/* Re-add the fd to the epoll set */

1179

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1180

&(struct epoll_event)

1181

{ .events=EPOLLIN | EPOLLRDHUP });

1182

if(ret != 0 and errno != EEXIST){

1183

error(0, errno, "Failed to re-add inotify file descriptor %d for"

1184

" directory %s to epoll set", fd, filename);

1185

/* Force the added task (read_inotify_event) to run again, at most

1186

one second from now */

1187

if((queue->next_run == 0)

1188

or (queue->next_run > (*current_time + 1000000))){

1189

queue->next_run = *current_time + 1000000;

1190

}

1191

}

1192

}

1193

1194

__attribute__((nonnull))

1195

void open_and_parse_question(const task_context task,

1196

task_queue *const queue){

1197

__attribute__((cleanup(cleanup_string)))

1198

char *question_filename = task.question_filename;

1199

const int epoll_fd = task.epoll_fd;

1200

buffer *const password = task.password;

1201

string_set *const cancelled_filenames = task.cancelled_filenames;

1202

const mono_microsecs *const current_time = task.current_time;

1203

bool *const mandos_client_exited = task.mandos_client_exited;

1204

bool *const password_is_read = task.password_is_read;

1205

1206

/* We use the GLib "Key-value file parser" functions to parse the

1207

question file. See <https://systemd.io/PASSWORD_AGENTS/> for

1208

specification of contents */

1209

__attribute__((nonnull))

1210

void cleanup_g_key_file(GKeyFile **key_file){

1211

if(*key_file != NULL){

1212

g_key_file_free(*key_file);

1213

}

1214

}

1215

1216

__attribute__((cleanup(cleanup_g_key_file)))

1217

GKeyFile *key_file = g_key_file_new();

1218

if(key_file == NULL){

1219

error(0, errno, "Failed g_key_file_new() for \"%s\"",

1220

question_filename);

1221

return;

1222

}

1223

GError *glib_error = NULL;

1224

if(g_key_file_load_from_file(key_file, question_filename,

1225

G_KEY_FILE_NONE, &glib_error) != TRUE){

1226

/* If a file was removed, we should ignore it, so */

1227

/* only show error message if file actually existed */

1228

if(glib_error->code != G_FILE_ERROR_NOENT){

1229

error(0, 0, "Failed to load question data from file \"%s\": %s",

1230

question_filename, glib_error->message);

1231

}

1232

return;

1233

}

1234

1235

__attribute__((cleanup(cleanup_string)))

1236

char *socket_name = g_key_file_get_string(key_file, "Ask",

1237

"Socket",

1238

&glib_error);

1239

if(socket_name == NULL){

1240

error(0, 0, "Question file \"%s\" did not contain \"Socket\": %s",

1241

question_filename, glib_error->message);

1242

return;

1243

}

1244

1245

if(strlen(socket_name) == 0){

1246

error(0, 0, "Question file \"%s\" had empty \"Socket\" value",

1247

question_filename);

1248

return;

1249

}

1250

1251

const guint64 pid = g_key_file_get_uint64(key_file, "Ask", "PID",

1252

&glib_error);

1253

if(glib_error != NULL){

1254

error(0, 0, "Question file \"%s\" contained bad \"PID\": %s",

1255

question_filename, glib_error->message);

1256

return;

1257

}

1258

1259

if((pid != (guint64)((pid_t)pid))

1260

or (kill((pid_t)pid, 0) != 0)){

1261

error(0, 0, "PID %" PRIuMAX " in question file \"%s\" is bad or"

1262

" does not exist", (uintmax_t)pid, question_filename);

1263

return;

1264

}

1265

1266

guint64 notafter = g_key_file_get_uint64(key_file, "Ask",

1267

"NotAfter", &glib_error);

1268

if(glib_error != NULL){

1269

if(glib_error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND){

1270

error(0, 0, "Question file \"%s\" contained bad \"NotAfter\":"

1271

" %s", question_filename, glib_error->message);

1272

}

1273

notafter = 0;

1274

}

1275

if(notafter != 0){

1276

if(queue->next_run == 0 or (queue->next_run > notafter)){

1277

queue->next_run = notafter;

1278

}

1279

if(*current_time >= notafter){

1280

return;

1281

}

1282

}

1283

1284

const task_context connect_question_socket_task = {

1285

.func=connect_question_socket,

1286

.question_filename=strdup(question_filename),

1287

.epoll_fd=epoll_fd,

1288

.password=password,

1289

.filename=strdup(socket_name),

1290

.cancelled_filenames=task.cancelled_filenames,

1291

.mandos_client_exited=mandos_client_exited,

1292

.password_is_read=password_is_read,

1293

.current_time=current_time,

1294

};

1295

if(connect_question_socket_task.question_filename == NULL

1296

or connect_question_socket_task.filename == NULL

1297

or not add_to_queue(queue, connect_question_socket_task)){

1298

error(0, errno, "Failed to add connect_question_socket for socket"

1299

" %s (from \"%s\") to queue", socket_name,

1300

question_filename);

1301

cleanup_task(&connect_question_socket_task);

1302

return;

1303

}

1304

/* Force the added task (connect_question_socket) to run

1305

immediately */

1306

queue->next_run = 1;

1307

1308

if(notafter > 0){

1309

char *const dup_filename = strdup(question_filename);

1310

const task_context cancel_old_question_task = {

1311

.func=cancel_old_question,

1312

.question_filename=dup_filename,

1313

.notafter=notafter,

1314

.filename=dup_filename,

1315

.cancelled_filenames=cancelled_filenames,

1316

.current_time=current_time,

1317

};

1318

if(cancel_old_question_task.question_filename == NULL

1319

or not add_to_queue(queue, cancel_old_question_task)){

1320

error(0, errno, "Failed to add cancel_old_question for file "

1321

"\"%s\" to queue", question_filename);

1322

cleanup_task(&cancel_old_question_task);

1323

return;

1324

}

1325

}

1326

}

1327

1328

__attribute__((nonnull))

1329

void cancel_old_question(const task_context task,

1330

task_queue *const queue){

1331

char *const question_filename = task.question_filename;

1332

string_set *const cancelled_filenames = task.cancelled_filenames;

1333

const mono_microsecs notafter = task.notafter;

1334

const mono_microsecs *const current_time = task.current_time;

1335

1336

if(*current_time >= notafter){

1337

if(not string_set_add(cancelled_filenames, question_filename)){

1338

error(0, errno, "Failed to cancel question for file %s",

1339

question_filename);

1340

}

1341

cleanup_task(&task);

1342

return;

1343

}

1344

1345

if(not add_to_queue(queue, task)){

1346

error(0, errno, "Failed to add cancel_old_question for file "

1347

"%s to queue", question_filename);

1348

cleanup_task(&task);

1349

return;

1350

}

1351

1352

if((queue->next_run == 0) or (queue->next_run > notafter)){

1353

queue->next_run = notafter;

1354

}

1355

}

1356

1357

__attribute__((nonnull))

1358

void connect_question_socket(const task_context task,

1359

task_queue *const queue){

1360

char *const question_filename = task.question_filename;

1361

char *const filename = task.filename;

1362

const int epoll_fd = task.epoll_fd;

1363

buffer *const password = task.password;

1364

string_set *const cancelled_filenames = task.cancelled_filenames;

1365

bool *const mandos_client_exited = task.mandos_client_exited;

1366

bool *const password_is_read = task.password_is_read;

1367

const mono_microsecs *const current_time = task.current_time;

1368

1369

struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };

1370

1371

if(sizeof(sock_name.sun_path) <= strlen(filename)){

1372

error(0, 0, "Socket filename is larger than"

1373

" sizeof(sockaddr_un.sun_path); %" PRIuMAX ": \"%s\"",

1374

(uintmax_t)sizeof(sock_name.sun_path), filename);

1375

if(not string_set_add(cancelled_filenames, question_filename)){

1376

error(0, errno, "Failed to cancel question for file %s",

1377

question_filename);

1378

}

1379

cleanup_task(&task);

1380

return;

1381

}

1382

1383

const int fd = socket(PF_LOCAL, SOCK_DGRAM

1384

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0);

1385

if(fd < 0){

1386

error(0, errno,

1387

"Failed to create socket(PF_LOCAL, SOCK_DGRAM, 0)");

1388

if(not add_to_queue(queue, task)){

1389

error(0, errno, "Failed to add connect_question_socket for file"

1390

" \"%s\" and socket \"%s\" to queue", question_filename,

1391

filename);

1392

cleanup_task(&task);

1393

} else {

1394

/* Force the added task (connect_question_socket) to run

1395

immediately */

1396

queue->next_run = 1;

1397

}

1398

return;

1399

}

1400

1401

strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));

1402

if(connect(fd, (struct sockaddr *)&sock_name,

1403

(socklen_t)SUN_LEN(&sock_name)) != 0){

1404

error(0, errno, "Failed to connect socket to \"%s\"", filename);

1405

if(not add_to_queue(queue, task)){

1406

error(0, errno, "Failed to add connect_question_socket for file"

1407

" \"%s\" and socket \"%s\" to queue", question_filename,

1408

filename);

1409

cleanup_task(&task);

1410

} else {

1411

/* Force the added task (connect_question_socket) to run again,

1412

at most one second from now */

1413

if((queue->next_run == 0)

1414

or (queue->next_run > (*current_time + 1000000))){

1415

queue->next_run = *current_time + 1000000;

1416

}

1417

}

1418

return;

1419

}

1420

1421

/* Not necessary, but we can try, and merely warn on failure */

1422

if(shutdown(fd, SHUT_RD) != 0){

1423

error(0, errno, "Failed to shutdown reading from socket \"%s\"",

1424

filename);

1425

}

1426

1427

/* Add the fd to the epoll set */

1428

if(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1429

&(struct epoll_event){ .events=EPOLLOUT })

1430

!= 0){

1431

error(0, errno, "Failed to add inotify file descriptor %d for"

1432

" socket %s to epoll set", fd, filename);

1433

if(not add_to_queue(queue, task)){

1434

error(0, errno, "Failed to add connect_question_socket for file"

1435

" \"%s\" and socket \"%s\" to queue", question_filename,

1436

filename);

1437

cleanup_task(&task);

1438

} else {

1439

/* Force the added task (connect_question_socket) to run again,

1440

at most one second from now */

1441

if((queue->next_run == 0)

1442

or (queue->next_run > (*current_time + 1000000))){

1443

queue->next_run = *current_time + 1000000;

1444

}

1445

}

1446

return;

1447

}

1448

1449

/* add task send_password_to_socket to queue */

1450

const task_context send_password_to_socket_task = {

1451

.func=send_password_to_socket,

1452

.question_filename=question_filename,

1453

.filename=filename,

1454

.epoll_fd=epoll_fd,

1455

.fd=fd,

1456

.password=password,

1457

.cancelled_filenames=cancelled_filenames,

1458

.mandos_client_exited=mandos_client_exited,

1459

.password_is_read=password_is_read,

1460

.current_time=current_time,

1461

};

1462

1463

if(not add_to_queue(queue, send_password_to_socket_task)){

1464

error(0, errno, "Failed to add send_password_to_socket for"

1465

" file \"%s\" and socket \"%s\" to queue",

1466

question_filename, filename);

1467

cleanup_task(&send_password_to_socket_task);

1468

}

1469

}

1470

1471

__attribute__((nonnull))

1472

void send_password_to_socket(const task_context task,

1473

task_queue *const queue){

1474

char *const question_filename=task.question_filename;

1475

char *const filename=task.filename;

1476

const int epoll_fd=task.epoll_fd;

1477

const int fd=task.fd;

1478

buffer *const password=task.password;

1479

string_set *const cancelled_filenames=task.cancelled_filenames;

1480

bool *const mandos_client_exited = task.mandos_client_exited;

1481

bool *const password_is_read = task.password_is_read;

1482

const mono_microsecs *const current_time = task.current_time;

1483

1484

if(*mandos_client_exited and *password_is_read){

1485

1486

const size_t send_buffer_length = password->length + 2;

1487

char *send_buffer = malloc(send_buffer_length);

1488

if(send_buffer == NULL){

1489

error(0, errno, "Failed to allocate send_buffer");

1490

} else {

1491

#if defined(__GNUC__) and __GNUC__ >= 5

1492

#pragma GCC diagnostic push

1493

/* mlock() does not access the memory */

1494

#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"

1495

#endif

1496

if(mlock(send_buffer, send_buffer_length) != 0){

1497

#if defined(__GNUC__) and __GNUC__ >= 5

1498

#pragma GCC diagnostic pop

1499

#endif

1500

/* Warn but do not treat as fatal error */

1501

if(errno != EPERM and errno != ENOMEM){

1502

error(0, errno, "Failed to lock memory for password"

1503

" buffer");

1504

}

1505

}

1506

/* “[…] send a single datagram to the socket consisting of the

1507

password string either prefixed with "+" or with "-"

1508

depending on whether the password entry was successful or

1509

not. You may but don't have to include a final NUL byte in

1510

your message.

1511

1512

— <https://systemd.io/PASSWORD_AGENTS/> (Tue, 15 Sep 2020

1513

14:24:20 GMT)

1514

*/

1515

send_buffer[0] = '+'; /* Prefix with "+" */

1516

/* Always add an extra NUL */

1517

send_buffer[password->length + 1] = '\0';

1518

if(password->length > 0){

1519

memcpy(send_buffer + 1, password->data, password->length);

1520

}

1521

errno = 0;

1522

ssize_t ssret = send(fd, send_buffer, send_buffer_length,

1523

MSG_NOSIGNAL);

1524

const error_t saved_errno = (ssret < 0) ? errno : 0;

1525

#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)

1526

explicit_bzero(send_buffer, send_buffer_length);

1527

#else

1528

memset(send_buffer, '\0', send_buffer_length);

1529

#endif

1530

if(munlock(send_buffer, send_buffer_length) != 0){

1531

error(0, errno, "Failed to unlock memory of send buffer");

1532

}

1533

free(send_buffer);

1534

if(ssret < 0 or ssret < (ssize_t)send_buffer_length){

1535

switch(saved_errno){

1536

case EINTR:

1537

case ENOBUFS:

1538

case ENOMEM:

1539

case EADDRINUSE:

1540

case ECONNREFUSED:

1541

case ECONNRESET:

1542

case ENOENT:

1543

case ETOOMANYREFS:

1544

case EAGAIN:

1545

/* Retry, below */

1546

break;

1547

case EMSGSIZE:

1548

error(0, saved_errno, "Password of size %" PRIuMAX

1549

" is too big", (uintmax_t)password->length);

1550

#if __GNUC__ < 7

1551

/* FALLTHROUGH */

1552

#else

1553

__attribute__((fallthrough));

1554

#endif

1555

case 0:

1556

if(ssret >= 0 and ssret < (ssize_t)send_buffer_length){

1557

error(0, 0, "Password only partially sent to socket %s: %"

1558

PRIuMAX " out of %" PRIuMAX " bytes sent", filename,

1559

(uintmax_t)ssret, (uintmax_t)send_buffer_length);

1560

}

1561

#if __GNUC__ < 7

1562

/* FALLTHROUGH */

1563

#else

1564

__attribute__((fallthrough));

1565

#endif

1566

default:

1567

error(0, saved_errno, "Failed to send() to socket %s",

1568

filename);

1569

if(not string_set_add(cancelled_filenames,

1570

question_filename)){

1571

error(0, errno, "Failed to cancel question for file %s",

1572

question_filename);

1573

}

1574

cleanup_task(&task);

1575

return;

1576

}

1577

} else {

1578

/* Success */

1579

cleanup_task(&task);

1580

return;

1581

}

1582

}

1583

}

1584

1585

/* We failed or are not ready yet; retry later */

1586

1587

if(not add_to_queue(queue, task)){

1588

error(0, errno, "Failed to add send_password_to_socket for"

1589

" file %s and socket %s to queue", question_filename,

1590

filename);

1591

cleanup_task(&task);

1592

}

1593

1594

/* Add the fd to the epoll set */

1595

if(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1596

&(struct epoll_event){ .events=EPOLLOUT })

1597

!= 0){

1598

error(0, errno, "Failed to add socket file descriptor %d for"

1599

" socket %s to epoll set", fd, filename);

1600

/* Force the added task (send_password_to_socket) to run again, at

1601

most one second from now */

1602

if((queue->next_run == 0)

1603

or (queue->next_run > (*current_time + 1000000))){

1604

queue->next_run = *current_time + 1000000;

1605

}

1606

}

1607

}

1608

1609

__attribute__((warn_unused_result))

1610

bool add_existing_questions(task_queue *const queue,

1611

const int epoll_fd,

1612

buffer *const password,

1613

string_set *cancelled_filenames,

1614

const mono_microsecs *const current_time,

1615

bool *const mandos_client_exited,

1616

bool *const password_is_read,

1617

const char *const dirname){

1618

__attribute__((cleanup(cleanup_string)))

1619

char *dir_pattern = NULL;

1620

const int ret = asprintf(&dir_pattern, "%s/ask.*", dirname);

1621

if(ret < 0 or dir_pattern == NULL){

1622

error(0, errno, "Could not create glob pattern for directory %s",

1623

dirname);

1624

return false;

1625

}

1626

__attribute__((cleanup(globfree)))

1627

glob_t question_filenames = {};

1628

switch(glob(dir_pattern, GLOB_ERR | GLOB_NOSORT | GLOB_MARK,

1629

NULL, &question_filenames)){

1630

case GLOB_ABORTED:

1631

default:

1632

error(0, errno, "Failed to open directory %s", dirname);

1633

return false;

1634

case GLOB_NOMATCH:

1635

error(0, errno, "There are no question files in %s", dirname);

1636

return false;

1637

case GLOB_NOSPACE:

1638

error(0, errno, "Could not allocate memory for question file"

1639

" names in %s", dirname);

1640

#if __GNUC__ < 7

1641

/* FALLTHROUGH */

1642

#else

1643

__attribute__((fallthrough));

1644

#endif

1645

case 0:

1646

for(size_t i = 0; i < question_filenames.gl_pathc; i++){

1647

char *const question_filename = strdup(question_filenames

1648

.gl_pathv[i]);

1649

const task_context task = {

1650

.func=open_and_parse_question,

1651

.epoll_fd=epoll_fd,

1652

.question_filename=question_filename,

1653

.filename=question_filename,

1654

.password=password,

1655

.cancelled_filenames=cancelled_filenames,

1656

.current_time=current_time,

1657

.mandos_client_exited=mandos_client_exited,

1658

.password_is_read=password_is_read,

1659

};

1660

1661

if(question_filename == NULL

1662

or not add_to_queue(queue, task)){

1663

error(0, errno, "Failed to add open_and_parse_question for"

1664

" file %s to queue",

1665

question_filenames.gl_pathv[i]);

1666

free(question_filename);

1667

} else {

1668

queue->next_run = 1;

1669

}

1670

}

1671

return true;

1672

}

1673

}

1674

1675

__attribute__((nonnull, warn_unused_result))

1676

bool wait_for_event(const int epoll_fd,

1677

const mono_microsecs queue_next_run,

1678

const mono_microsecs current_time){

1679

__attribute__((const))

1680

int milliseconds_to_wait(const mono_microsecs currtime,

1681

const mono_microsecs nextrun){

1682

if(currtime >= nextrun){

1683

return 0;

1684

}

1685

const uintmax_t wait_time_ms = (nextrun - currtime) / 1000;

1686

if(wait_time_ms > (uintmax_t)INT_MAX){

1687

return INT_MAX;

1688

}

1689

return (int)wait_time_ms;

1690

}

1691

1692

const int wait_time_ms = milliseconds_to_wait(current_time,

1693

queue_next_run);

1694

1695

/* Prepare unblocking of SIGCHLD during epoll_pwait */

1696

sigset_t temporary_unblocked_sigmask;

1697

/* Get current signal mask */

1698

if(pthread_sigmask(-1, NULL, &temporary_unblocked_sigmask) != 0){

1699

return false;

1700

}

1701

/* Remove SIGCHLD from the signal mask */

1702

if(sigdelset(&temporary_unblocked_sigmask, SIGCHLD) != 0){

1703

return false;

1704

}

1705

struct epoll_event events[8]; /* Ignored */

1706

int ret = epoll_pwait(epoll_fd, events,

1707

sizeof(events) / sizeof(struct epoll_event),

1708

queue_next_run == 0 ? -1 : (int)wait_time_ms,

1709

&temporary_unblocked_sigmask);

1710

if(ret < 0 and errno != EINTR){

1711

error(0, errno, "Failed epoll_pwait(epfd=%d, ..., timeout=%d,"

1712

" ...", epoll_fd,

1713

queue_next_run == 0 ? -1 : (int)wait_time_ms);

1714

return false;

1715

}

1716

return clear_all_fds_from_epoll_set(epoll_fd);

1717

}

1718

1719

bool clear_all_fds_from_epoll_set(const int epoll_fd){

1720

/* Create a new empty epoll set */

1721

__attribute__((cleanup(cleanup_close)))

1722

const int new_epoll_fd = epoll_create1(EPOLL_CLOEXEC);

1723

if(new_epoll_fd < 0){

1724

return false;

1725

}

1726

/* dup3() the new epoll set fd over the old one, replacing it */

1727

if(dup3(new_epoll_fd, epoll_fd, O_CLOEXEC) < 0){

1728

return false;

1729

}

1730

return true;

1731

}

1732

1733

__attribute__((nonnull, warn_unused_result))

1734

bool run_queue(task_queue **const queue,

1735

string_set *const cancelled_filenames,

1736

bool *const quit_now){

1737

1738

task_queue *new_queue = create_queue();

1739

if(new_queue == NULL){

1740

return false;

1741

}

1742

1743

__attribute__((cleanup(string_set_clear)))

1744

string_set old_cancelled_filenames = {};

1745

string_set_swap(cancelled_filenames, &old_cancelled_filenames);

1746

1747

/* Declare i outside the for loop, since we might need i after the

1748

loop in case we aborted in the middle */

1749

size_t i;

1750

for(i=0; i < (*queue)->length and not *quit_now; i++){

1751

task_context *const task = &((*queue)->tasks[i]);

1752

const char *const question_filename = task->question_filename;

1753

/* Skip any task referencing a cancelled question filename */

1754

if(question_filename != NULL

1755

and string_set_contains(old_cancelled_filenames,

1756

question_filename)){

1757

cleanup_task(task);

1758

continue;

1759

}

1760

task->func(*task, new_queue);

1761

}

1762

1763

if(*quit_now){

1764

/* we might be in the middle of the queue, so clean up any

1765

remaining tasks in the current queue */

1766

for(; i < (*queue)->length; i++){

1767

cleanup_task(&((*queue)->tasks[i]));

1768

}

1769

free_queue(*queue);

1770

*queue = new_queue;

1771

new_queue = NULL;

1772

return false;

1773

}

1774

free_queue(*queue);

1775

*queue = new_queue;

1776

new_queue = NULL;

1777

1778

return true;

1779

}

1780

1781

/* End of regular code section */

1782

1783

/* Start of tests section; here are the tests for the above code */

1784

1785

/* This "fixture" data structure is used by the test setup and

1786

teardown functions */

1787

typedef struct {

1788

struct sigaction orig_sigaction;

1789

sigset_t orig_sigmask;

1790

} test_fixture;

1791

1792

static void test_setup(test_fixture *fixture,

1793

__attribute__((unused))

1794

gconstpointer user_data){

1795

g_assert_true(setup_signal_handler(&fixture->orig_sigaction));

1796

g_assert_true(block_sigchld(&fixture->orig_sigmask));

1797

}

1798

1799

static void test_teardown(test_fixture *fixture,

1800

__attribute__((unused))

1801

gconstpointer user_data){

1802

g_assert_true(restore_signal_handler(&fixture->orig_sigaction));

1803

g_assert_true(restore_sigmask(&fixture->orig_sigmask));

1804

}

1805

1806

/* Utility function used by tests to search queue for matching task */

1807

__attribute__((pure, nonnull, warn_unused_result))

1808

static task_context *find_matching_task(const task_queue *const queue,

1809

const task_context task){

1810

/* The argument "task" structure is a pattern to match; 0 in any

1811

member means any value matches, otherwise the value must match.

1812

The filename strings are compared by strcmp(), not by pointer. */

1813

for(size_t i = 0; i < queue->length; i++){

1814

task_context *const current_task = queue->tasks+i;

1815

/* Check all members of task_context, if set to a non-zero value.

1816

If a member does not match, continue to next task in queue */

1817

1818

/* task_func *const func */

1819

if(task.func != NULL and current_task->func != task.func){

1820

continue;

1821

}

1822

/* char *const question_filename; */

1823

if(task.question_filename != NULL

1824

and (current_task->question_filename == NULL

1825

or strcmp(current_task->question_filename,

1826

task.question_filename) != 0)){

1827

continue;

1828

}

1829

/* const pid_t pid; */

1830

if(task.pid != 0 and current_task->pid != task.pid){

1831

continue;

1832

}

1833

/* const int epoll_fd; */

1834

if(task.epoll_fd != 0

1835

and current_task->epoll_fd != task.epoll_fd){

1836

continue;

1837

}

1838

/* bool *const quit_now; */

1839

if(task.quit_now != NULL

1840

and current_task->quit_now != task.quit_now){

1841

continue;

1842

}

1843

/* const int fd; */

1844

if(task.fd != 0 and current_task->fd != task.fd){

1845

continue;

1846

}

1847

/* bool *const mandos_client_exited; */

1848

if(task.mandos_client_exited != NULL

1849

and current_task->mandos_client_exited

1850

!= task.mandos_client_exited){

1851

continue;

1852

}

1853

/* buffer *const password; */

1854

if(task.password != NULL

1855

and current_task->password != task.password){

1856

continue;

1857

}

1858

/* bool *const password_is_read; */

1859

if(task.password_is_read != NULL

1860

and current_task->password_is_read != task.password_is_read){

1861

continue;

1862

}

1863

/* char *filename; */

1864

if(task.filename != NULL

1865

and (current_task->filename == NULL

1866

or strcmp(current_task->filename, task.filename) != 0)){

1867

continue;

1868

}

1869

/* string_set *const cancelled_filenames; */

1870

if(task.cancelled_filenames != NULL

1871

and current_task->cancelled_filenames

1872

!= task.cancelled_filenames){

1873

continue;

1874

}

1875

/* const mono_microsecs notafter; */

1876

if(task.notafter != 0

1877

and current_task->notafter != task.notafter){

1878

continue;

1879

}

1880

/* const mono_microsecs *const current_time; */

1881

if(task.current_time != NULL

1882

and current_task->current_time != task.current_time){

1883

continue;

1884

}

1885

/* Current task matches all members; return it */

1886

return current_task;

1887

}

1888

/* No task in queue matches passed pattern task */

1889

return NULL;

1890

}

1891

1892

static void test_create_queue(__attribute__((unused))

1893

test_fixture *fixture,

1894

__attribute__((unused))

1895

gconstpointer user_data){

1896

__attribute__((cleanup(cleanup_queue)))

1897

task_queue *const queue = create_queue();

1898

g_assert_nonnull(queue);

1899

g_assert_null(queue->tasks);

1900

g_assert_true(queue->length == 0);

1901

g_assert_true(queue->next_run == 0);

1902

}

1903

1904

static task_func dummy_func;

1905

1906

static void test_add_to_queue(__attribute__((unused))

1907

test_fixture *fixture,

1908

__attribute__((unused))

1909

gconstpointer user_data){

1910

__attribute__((cleanup(cleanup_queue)))

1911

task_queue *queue = create_queue();

1912

g_assert_nonnull(queue);

1913

1914

g_assert_true(add_to_queue(queue,

1915

(task_context){ .func=dummy_func }));

1916

g_assert_true(queue->length == 1);

1917

g_assert_nonnull(queue->tasks);

1918

g_assert_true(queue->tasks[0].func == dummy_func);

1919

}

1920

1921

static void test_add_to_queue_overflow(__attribute__((unused))

1922

test_fixture *fixture,

1923

__attribute__((unused))

1924

gconstpointer user_data){

1925

__attribute__((cleanup(cleanup_queue)))

1926

task_queue *queue = create_queue();

1927

g_assert_nonnull(queue);

1928

g_assert_true(queue->length == 0);

1929

queue->length = SIZE_MAX / sizeof(task_context); /* fake max size */

1930

1931

FILE *real_stderr = stderr;

1932

FILE *devnull = fopen("/dev/null", "we");

1933

g_assert_nonnull(devnull);

1934

stderr = devnull;

1935

const bool ret = add_to_queue(queue,

1936

(task_context){ .func=dummy_func });

1937

g_assert_true(errno == ENOMEM);

1938

g_assert_false(ret);

1939

stderr = real_stderr;

1940

g_assert_cmpint(fclose(devnull), ==, 0);

1941

queue->length = 0; /* Restore real size */

1942

}

1943

1944

static void dummy_func(__attribute__((unused))

1945

const task_context task,

1946

__attribute__((unused))

1947

task_queue *const queue){

1948

}

1949

1950

static void test_queue_has_question_empty(__attribute__((unused))

1951

test_fixture *fixture,

1952

__attribute__((unused))

1953

gconstpointer user_data){

1954

__attribute__((cleanup(cleanup_queue)))

1955

task_queue *queue = create_queue();

1956

g_assert_nonnull(queue);

1957

g_assert_false(queue_has_question(queue));

1958

}

1959

1960

static void test_queue_has_question_false(__attribute__((unused))

1961

test_fixture *fixture,

1962

__attribute__((unused))

1963

gconstpointer user_data){

1964

__attribute__((cleanup(cleanup_queue)))

1965

task_queue *queue = create_queue();

1966

g_assert_nonnull(queue);

1967

g_assert_true(add_to_queue(queue,

1968

(task_context){ .func=dummy_func }));

1969

g_assert_false(queue_has_question(queue));

1970

}

1971

1972

static void test_queue_has_question_true(__attribute__((unused))

1973

test_fixture *fixture,

1974

__attribute__((unused))

1975

gconstpointer user_data){

1976

__attribute__((cleanup(cleanup_queue)))

1977

task_queue *queue = create_queue();

1978

g_assert_nonnull(queue);

1979

char *const question_filename

1980

= strdup("/nonexistent/question_filename");

1981

g_assert_nonnull(question_filename);

1982

task_context task = {

1983

.func=dummy_func,

1984

.question_filename=question_filename,

1985

};

1986

g_assert_true(add_to_queue(queue, task));

1987

g_assert_true(queue_has_question(queue));

1988

}

1989

1990

static void test_queue_has_question_false2(__attribute__((unused))

1991

test_fixture *fixture,

1992

__attribute__((unused))

1993

gconstpointer user_data){

1994

__attribute__((cleanup(cleanup_queue)))

1995

task_queue *queue = create_queue();

1996

g_assert_nonnull(queue);

1997

task_context task = { .func=dummy_func };

1998

g_assert_true(add_to_queue(queue, task));

1999

g_assert_true(add_to_queue(queue, task));

2000

g_assert_cmpint((int)queue->length, ==, 2);

2001

g_assert_false(queue_has_question(queue));

2002

}

2003

2004

static void test_queue_has_question_true2(__attribute__((unused))

2005

test_fixture *fixture,

2006

__attribute__((unused))

2007

gconstpointer user_data){

2008

__attribute__((cleanup(cleanup_queue)))

2009

task_queue *queue = create_queue();

2010

g_assert_nonnull(queue);

2011

task_context task1 = { .func=dummy_func };

2012

g_assert_true(add_to_queue(queue, task1));

2013

char *const question_filename

2014

= strdup("/nonexistent/question_filename");

2015

g_assert_nonnull(question_filename);

2016

task_context task2 = {

2017

.func=dummy_func,

2018

.question_filename=question_filename,

2019

};

2020

g_assert_true(add_to_queue(queue, task2));

2021

g_assert_cmpint((int)queue->length, ==, 2);

2022

g_assert_true(queue_has_question(queue));

2023

}

2024

2025

static void test_cleanup_buffer(__attribute__((unused))

2026

test_fixture *fixture,

2027

__attribute__((unused))

2028

gconstpointer user_data){

2029

buffer buf = {};

2030

2031

const size_t buffersize = 10;

2032

2033

buf.data = malloc(buffersize);

2034

g_assert_nonnull(buf.data);

2035

if(mlock(buf.data, buffersize) != 0){

2036

g_assert_true(errno == EPERM or errno == ENOMEM);

2037

}

2038

2039

cleanup_buffer(&buf);

2040

g_assert_null(buf.data);

2041

}

2042

2043

static

2044

void test_string_set_new_set_contains_nothing(__attribute__((unused))

2045

test_fixture *fixture,

2046

__attribute__((unused))

2047

gconstpointer

2048

user_data){

2049

__attribute__((cleanup(string_set_clear)))

2050

string_set set = {};

2051

g_assert_false(string_set_contains(set, "")); /* Empty string */

2052

g_assert_false(string_set_contains(set, "test_string"));

2053

}

2054

2055

static void

2056

test_string_set_with_added_string_contains_it(__attribute__((unused))

2057

test_fixture *fixture,

2058

__attribute__((unused))

2059

gconstpointer

2060

user_data){

2061

__attribute__((cleanup(string_set_clear)))

2062

string_set set = {};

2063

g_assert_true(string_set_add(&set, "test_string"));

2064

g_assert_true(string_set_contains(set, "test_string"));

2065

}

2066

2067

static void

2068

test_string_set_cleared_does_not_contain_str(__attribute__((unused))

2069

test_fixture *fixture,

2070

__attribute__((unused))

2071

gconstpointer user_data){

2072

__attribute__((cleanup(string_set_clear)))

2073

string_set set = {};

2074

g_assert_true(string_set_add(&set, "test_string"));

2075

string_set_clear(&set);

2076

g_assert_false(string_set_contains(set, "test_string"));

2077

}

2078

2079

static

2080

void test_string_set_swap_one_with_empty(__attribute__((unused))

2081

test_fixture *fixture,

2082

__attribute__((unused))

2083

gconstpointer user_data){

2084

__attribute__((cleanup(string_set_clear)))

2085

string_set set1 = {};

2086

__attribute__((cleanup(string_set_clear)))

2087

string_set set2 = {};

2088

g_assert_true(string_set_add(&set1, "test_string1"));

2089

string_set_swap(&set1, &set2);

2090

g_assert_false(string_set_contains(set1, "test_string1"));

2091

g_assert_true(string_set_contains(set2, "test_string1"));

2092

}

2093

2094

static

2095

void test_string_set_swap_empty_with_one(__attribute__((unused))

2096

test_fixture *fixture,

2097

__attribute__((unused))

2098

gconstpointer user_data){

2099

__attribute__((cleanup(string_set_clear)))

2100

string_set set1 = {};

2101

__attribute__((cleanup(string_set_clear)))

2102

string_set set2 = {};

2103

g_assert_true(string_set_add(&set2, "test_string2"));

2104

string_set_swap(&set1, &set2);

2105

g_assert_true(string_set_contains(set1, "test_string2"));

2106

g_assert_false(string_set_contains(set2, "test_string2"));

2107

}

2108

2109

static void test_string_set_swap_one_with_one(__attribute__((unused))

2110

test_fixture *fixture,

2111

__attribute__((unused))

2112

gconstpointer

2113

user_data){

2114

__attribute__((cleanup(string_set_clear)))

2115

string_set set1 = {};

2116

__attribute__((cleanup(string_set_clear)))

2117

string_set set2 = {};

2118

g_assert_true(string_set_add(&set1, "test_string1"));

2119

g_assert_true(string_set_add(&set2, "test_string2"));

2120

string_set_swap(&set1, &set2);

2121

g_assert_false(string_set_contains(set1, "test_string1"));

2122

g_assert_true(string_set_contains(set1, "test_string2"));

2123

g_assert_false(string_set_contains(set2, "test_string2"));

2124

g_assert_true(string_set_contains(set2, "test_string1"));

2125

}

2126

2127

static bool fd_has_cloexec_and_nonblock(const int);

2128

2129

static bool epoll_set_contains(int, int, uint32_t);

2130

2131

static void test_start_mandos_client(test_fixture *fixture,

2132

__attribute__((unused))

2133

gconstpointer user_data){

2134

2135

bool mandos_client_exited = false;

2136

bool quit_now = false;

2137

__attribute__((cleanup(cleanup_close)))

2138

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2139

g_assert_cmpint(epoll_fd, >=, 0);

2140

__attribute__((cleanup(cleanup_queue)))

2141

task_queue *queue = create_queue();

2142

g_assert_nonnull(queue);

2143

buffer password = {};

2144

bool password_is_read = false;

2145

const char helper_directory[] = "/nonexistent";

2146

const char *const argv[] = { "/bin/true", NULL };

2147

2148

g_assert_true(start_mandos_client(queue, epoll_fd,

2149

&mandos_client_exited, &quit_now,

2150

&password, &password_is_read,

2151

&fixture->orig_sigaction,

2152

fixture->orig_sigmask,

2153

helper_directory, 0, 0, argv));

2154

2155

g_assert_cmpuint((unsigned int)queue->length, >=, 2);

2156

2157

const task_context *const added_wait_task

2158

= find_matching_task(queue, (task_context){

2159

.func=wait_for_mandos_client_exit,

2160

.mandos_client_exited=&mandos_client_exited,

2161

.quit_now=&quit_now,

2162

});

2163

g_assert_nonnull(added_wait_task);

2164

g_assert_cmpint(added_wait_task->pid, >, 0);

2165

g_assert_cmpint(kill(added_wait_task->pid, SIGKILL), ==, 0);

2166

waitpid(added_wait_task->pid, NULL, 0);

2167

2168

const task_context *const added_read_task

2169

= find_matching_task(queue, (task_context){

2170

.func=read_mandos_client_output,

2171

.epoll_fd=epoll_fd,

2172

.password=&password,

2173

.password_is_read=&password_is_read,

2174

.quit_now=&quit_now,

2175

});

2176

g_assert_nonnull(added_read_task);

2177

g_assert_cmpint(added_read_task->fd, >, 2);

2178

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

2179

g_assert_true(epoll_set_contains(epoll_fd, added_read_task->fd,

2180

EPOLLIN | EPOLLRDHUP));

2181

}

2182

2183

static bool fd_has_cloexec_and_nonblock(const int fd){

2184

const int socket_fd_flags = fcntl(fd, F_GETFD, 0);

2185

const int socket_file_flags = fcntl(fd, F_GETFL, 0);

2186

return ((socket_fd_flags >= 0)

2187

and (socket_fd_flags & FD_CLOEXEC)

2188

and (socket_file_flags >= 0)

2189

and (socket_file_flags & O_NONBLOCK));

2190

}

2191

2192

__attribute__((const))

2193

bool is_privileged(void){

2194

uid_t user = getuid() + 1;

2195

if(user == 0){ /* Overflow check */

2196

user++;

2197

}

2198

gid_t group = getuid() + 1;

2199

if(group == 0){ /* Overflow check */

2200

group++;

2201

}

2202

const pid_t pid = fork();

2203

if(pid == 0){ /* Child */

2204

if(setresgid((uid_t)-1, group, group) == -1){

2205

if(errno != EPERM){

2206

error(EXIT_FAILURE, errno, "Failed to setresgid(-1, %" PRIuMAX

2207

", %" PRIuMAX")", (uintmax_t)group, (uintmax_t)group);

2208

}

2209

exit(EXIT_FAILURE);

2210

}

2211

if(setresuid((uid_t)-1, user, user) == -1){

2212

if(errno != EPERM){

2213

error(EXIT_FAILURE, errno, "Failed to setresuid(-1, %" PRIuMAX

2214

", %" PRIuMAX")", (uintmax_t)user, (uintmax_t)user);

2215

}

2216

exit(EXIT_FAILURE);

2217

}

2218

exit(EXIT_SUCCESS);

2219

}

2220

if(pid == -1){

2221

error(EXIT_FAILURE, errno, "Failed to fork()");

2222

}

2223

2224

int status;

2225

waitpid(pid, &status, 0);

2226

if(WIFEXITED(status) and (WEXITSTATUS(status) == EXIT_SUCCESS)){

2227

return true;

2228

}

2229

return false;

2230

}

2231

2232

static bool epoll_set_contains(int epoll_fd, int fd, uint32_t events){

2233

/* Only scan for events in this eventmask */

2234

const uint32_t eventmask = EPOLLIN | EPOLLOUT | EPOLLRDHUP;

2235

__attribute__((cleanup(cleanup_string)))

2236

char *fdinfo_name = NULL;

2237

int ret = asprintf(&fdinfo_name, "/proc/self/fdinfo/%d", epoll_fd);

2238

g_assert_cmpint(ret, >, 0);

2239

g_assert_nonnull(fdinfo_name);

2240

2241

FILE *fdinfo = fopen(fdinfo_name, "r");

2242

g_assert_nonnull(fdinfo);

2243

uint32_t reported_events;

2244

buffer line = {};

2245

int found_fd = -1;

2246

2247

do {

2248

if(getline(&line.data, &line.allocated, fdinfo) < 0){

2249

break;

2250

}

2251

/* See proc(5) for format of /proc/PID/fdinfo/FD for epoll fd's */

2252

if(sscanf(line.data, "tfd: %d events: %" SCNx32 " ",

2253

&found_fd, &reported_events) == 2){

2254

if(found_fd == fd){

2255

break;

2256

}

2257

}

2258

} while(not feof(fdinfo) and not ferror(fdinfo));

2259

g_assert_cmpint(fclose(fdinfo), ==, 0);

2260

free(line.data);

2261

if(found_fd != fd){

2262

return false;

2263

}

2264

2265

if(events == 0){

2266

/* Don't check events if none are given */

2267

return true;

2268

}

2269

return (reported_events & eventmask) == (events & eventmask);

2270

}

2271

2272

static void test_start_mandos_client_execv(test_fixture *fixture,

2273

__attribute__((unused))

2274

gconstpointer user_data){

2275

bool mandos_client_exited = false;

2276

bool quit_now = false;

2277

__attribute__((cleanup(cleanup_close)))

2278

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2279

g_assert_cmpint(epoll_fd, >=, 0);

2280

__attribute__((cleanup(cleanup_queue)))

2281

task_queue *queue = create_queue();

2282

g_assert_nonnull(queue);

2283

__attribute__((cleanup(cleanup_buffer)))

2284

buffer password = {};

2285

const char helper_directory[] = "/nonexistent";

2286

/* Can't execv("/", ...), so this should fail */

2287

const char *const argv[] = { "/", NULL };

2288

2289

{

2290

__attribute__((cleanup(cleanup_close)))

2291

const int devnull_fd = open("/dev/null",

2292

O_WRONLY | O_CLOEXEC | O_NOCTTY);

2293

g_assert_cmpint(devnull_fd, >=, 0);

2294

__attribute__((cleanup(cleanup_close)))

2295

const int real_stderr_fd = dup(STDERR_FILENO);

2296

g_assert_cmpint(real_stderr_fd, >=, 0);

2297

dup2(devnull_fd, STDERR_FILENO);

2298

2299

const bool success = start_mandos_client(queue, epoll_fd,

2300

&mandos_client_exited,

2301

&quit_now,

2302

&password,

2303

(bool[]){false},

2304

&fixture->orig_sigaction,

2305

fixture->orig_sigmask,

2306

helper_directory, 0, 0,

2307

argv);

2308

dup2(real_stderr_fd, STDERR_FILENO);

2309

g_assert_true(success);

2310

}

2311

g_assert_cmpuint((unsigned int)queue->length, ==, 2);

2312

2313

struct timespec starttime, currtime;

2314

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2315

do {

2316

queue->next_run = 0;

2317

string_set cancelled_filenames = {};

2318

2319

{

2320

__attribute__((cleanup(cleanup_close)))

2321

const int devnull_fd = open("/dev/null",

2322

O_WRONLY | O_CLOEXEC | O_NOCTTY);

2323

g_assert_cmpint(devnull_fd, >=, 0);

2324

__attribute__((cleanup(cleanup_close)))

2325

const int real_stderr_fd = dup(STDERR_FILENO);

2326

g_assert_cmpint(real_stderr_fd, >=, 0);

2327

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2328

dup2(devnull_fd, STDERR_FILENO);

2329

const bool success = run_queue(&queue, &cancelled_filenames,

2330

&quit_now);

2331

dup2(real_stderr_fd, STDERR_FILENO);

2332

if(not success){

2333

break;

2334

}

2335

}

2336

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2337

} while(((queue->length) > 0)

2338

and (not quit_now)

2339

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2340

2341

g_assert_true(quit_now);

2342

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2343

g_assert_true(mandos_client_exited);

2344

}

2345

2346

static void test_start_mandos_client_suid_euid(test_fixture *fixture,

2347

__attribute__((unused))

2348

gconstpointer

2349

user_data){

2350

if(not is_privileged()){

2351

g_test_skip("Not privileged");

2352

return;

2353

}

2354

2355

bool mandos_client_exited = false;

2356

bool quit_now = false;

2357

__attribute__((cleanup(cleanup_close)))

2358

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2359

g_assert_cmpint(epoll_fd, >=, 0);

2360

__attribute__((cleanup(cleanup_queue)))

2361

task_queue *queue = create_queue();

2362

g_assert_nonnull(queue);

2363

__attribute__((cleanup(cleanup_buffer)))

2364

buffer password = {};

2365

bool password_is_read = false;

2366

const char helper_directory[] = "/nonexistent";

2367

const char *const argv[] = { "/usr/bin/id", "--user", NULL };

2368

uid_t user = 1000;

2369

gid_t group = 1001;

2370

2371

const bool success = start_mandos_client(queue, epoll_fd,

2372

&mandos_client_exited,

2373

&quit_now, &password,

2374

&password_is_read,

2375

&fixture->orig_sigaction,

2376

fixture->orig_sigmask,

2377

helper_directory, user,

2378

group, argv);

2379

g_assert_true(success);

2380

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2381

2382

struct timespec starttime, currtime;

2383

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2384

do {

2385

queue->next_run = 0;

2386

string_set cancelled_filenames = {};

2387

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2388

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2389

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2390

} while(((queue->length) > 0)

2391

and (not quit_now)

2392

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2393

2394

g_assert_false(quit_now);

2395

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2396

g_assert_true(mandos_client_exited);

2397

2398

g_assert_true(password_is_read);

2399

g_assert_nonnull(password.data);

2400

2401

uintmax_t id;

2402

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2403

==, 1);

2404

g_assert_true((uid_t)id == id);

2405

2406

g_assert_cmpuint((unsigned int)id, ==, 0);

2407

}

2408

2409

static void test_start_mandos_client_suid_egid(test_fixture *fixture,

2410

__attribute__((unused))

2411

gconstpointer

2412

user_data){

2413

if(not is_privileged()){

2414

g_test_skip("Not privileged");

2415

return;

2416

}

2417

2418

bool mandos_client_exited = false;

2419

bool quit_now = false;

2420

__attribute__((cleanup(cleanup_close)))

2421

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2422

g_assert_cmpint(epoll_fd, >=, 0);

2423

__attribute__((cleanup(cleanup_queue)))

2424

task_queue *queue = create_queue();

2425

g_assert_nonnull(queue);

2426

__attribute__((cleanup(cleanup_buffer)))

2427

buffer password = {};

2428

bool password_is_read = false;

2429

const char helper_directory[] = "/nonexistent";

2430

const char *const argv[] = { "/usr/bin/id", "--group", NULL };

2431

uid_t user = 1000;

2432

gid_t group = 1001;

2433

2434

const bool success = start_mandos_client(queue, epoll_fd,

2435

&mandos_client_exited,

2436

&quit_now, &password,

2437

&password_is_read,

2438

&fixture->orig_sigaction,

2439

fixture->orig_sigmask,

2440

helper_directory, user,

2441

group, argv);

2442

g_assert_true(success);

2443

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2444

2445

struct timespec starttime, currtime;

2446

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2447

do {

2448

queue->next_run = 0;

2449

string_set cancelled_filenames = {};

2450

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2451

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2452

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2453

} while(((queue->length) > 0)

2454

and (not quit_now)

2455

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2456

2457

g_assert_false(quit_now);

2458

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2459

g_assert_true(mandos_client_exited);

2460

2461

g_assert_true(password_is_read);

2462

g_assert_nonnull(password.data);

2463

2464

uintmax_t id;

2465

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2466

==, 1);

2467

g_assert_true((gid_t)id == id);

2468

2469

g_assert_cmpuint((unsigned int)id, ==, 0);

2470

}

2471

2472

static void test_start_mandos_client_suid_ruid(test_fixture *fixture,

2473

__attribute__((unused))

2474

gconstpointer

2475

user_data){

2476

if(not is_privileged()){

2477

g_test_skip("Not privileged");

2478

return;

2479

}

2480

2481

bool mandos_client_exited = false;

2482

bool quit_now = false;

2483

__attribute__((cleanup(cleanup_close)))

2484

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2485

g_assert_cmpint(epoll_fd, >=, 0);

2486

__attribute__((cleanup(cleanup_queue)))

2487

task_queue *queue = create_queue();

2488

g_assert_nonnull(queue);

2489

__attribute__((cleanup(cleanup_buffer)))

2490

buffer password = {};

2491

bool password_is_read = false;

2492

const char helper_directory[] = "/nonexistent";

2493

const char *const argv[] = { "/usr/bin/id", "--user", "--real",

2494

NULL };

2495

uid_t user = 1000;

2496

gid_t group = 1001;

2497

2498

const bool success = start_mandos_client(queue, epoll_fd,

2499

&mandos_client_exited,

2500

&quit_now, &password,

2501

&password_is_read,

2502

&fixture->orig_sigaction,

2503

fixture->orig_sigmask,

2504

helper_directory, user,

2505

group, argv);

2506

g_assert_true(success);

2507

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2508

2509

struct timespec starttime, currtime;

2510

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2511

do {

2512

queue->next_run = 0;

2513

string_set cancelled_filenames = {};

2514

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2515

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2516

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2517

} while(((queue->length) > 0)

2518

and (not quit_now)

2519

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2520

2521

g_assert_false(quit_now);

2522

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2523

g_assert_true(mandos_client_exited);

2524

2525

g_assert_true(password_is_read);

2526

g_assert_nonnull(password.data);

2527

2528

uintmax_t id;

2529

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2530

==, 1);

2531

g_assert_true((uid_t)id == id);

2532

2533

g_assert_cmpuint((unsigned int)id, ==, user);

2534

}

2535

2536

static void test_start_mandos_client_suid_rgid(test_fixture *fixture,

2537

__attribute__((unused))

2538

gconstpointer

2539

user_data){

2540

if(not is_privileged()){

2541

g_test_skip("Not privileged");

2542

return;

2543

}

2544

2545

bool mandos_client_exited = false;

2546

bool quit_now = false;

2547

__attribute__((cleanup(cleanup_close)))

2548

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2549

g_assert_cmpint(epoll_fd, >=, 0);

2550

__attribute__((cleanup(cleanup_queue)))

2551

task_queue *queue = create_queue();

2552

g_assert_nonnull(queue);

2553

__attribute__((cleanup(cleanup_buffer)))

2554

buffer password = {};

2555

bool password_is_read = false;

2556

const char helper_directory[] = "/nonexistent";

2557

const char *const argv[] = { "/usr/bin/id", "--group", "--real",

2558

NULL };

2559

uid_t user = 1000;

2560

gid_t group = 1001;

2561

2562

const bool success = start_mandos_client(queue, epoll_fd,

2563

&mandos_client_exited,

2564

&quit_now, &password,

2565

&password_is_read,

2566

&fixture->orig_sigaction,

2567

fixture->orig_sigmask,

2568

helper_directory, user,

2569

group, argv);

2570

g_assert_true(success);

2571

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2572

2573

struct timespec starttime, currtime;

2574

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2575

do {

2576

queue->next_run = 0;

2577

string_set cancelled_filenames = {};

2578

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2579

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2580

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2581

} while(((queue->length) > 0)

2582

and (not quit_now)

2583

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2584

2585

g_assert_false(quit_now);

2586

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2587

g_assert_true(mandos_client_exited);

2588

2589

g_assert_true(password_is_read);

2590

g_assert_nonnull(password.data);

2591

2592

uintmax_t id;

2593

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2594

==, 1);

2595

g_assert_true((gid_t)id == id);

2596

2597

g_assert_cmpuint((unsigned int)id, ==, group);

2598

}

2599

2600

static void test_start_mandos_client_read(test_fixture *fixture,

2601

__attribute__((unused))

2602

gconstpointer user_data){

2603

bool mandos_client_exited = false;

2604

bool quit_now = false;

2605

__attribute__((cleanup(cleanup_close)))

2606

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2607

g_assert_cmpint(epoll_fd, >=, 0);

2608

__attribute__((cleanup(cleanup_queue)))

2609

task_queue *queue = create_queue();

2610

g_assert_nonnull(queue);

2611

__attribute__((cleanup(cleanup_buffer)))

2612

buffer password = {};

2613

bool password_is_read = false;

2614

const char dummy_test_password[] = "dummy test password";

2615

const char helper_directory[] = "/nonexistent";

2616

const char *const argv[] = { "/bin/echo", "-n", dummy_test_password,

2617

NULL };

2618

2619

const bool success = start_mandos_client(queue, epoll_fd,

2620

&mandos_client_exited,

2621

&quit_now, &password,

2622

&password_is_read,

2623

&fixture->orig_sigaction,

2624

fixture->orig_sigmask,

2625

helper_directory, 0, 0,

2626

argv);

2627

g_assert_true(success);

2628

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2629

2630

struct timespec starttime, currtime;

2631

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2632

do {

2633

queue->next_run = 0;

2634

string_set cancelled_filenames = {};

2635

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2636

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2637

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2638

} while(((queue->length) > 0)

2639

and (not quit_now)

2640

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2641

2642

g_assert_false(quit_now);

2643

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2644

g_assert_true(mandos_client_exited);

2645

2646

g_assert_true(password_is_read);

2647

g_assert_cmpint((int)password.length, ==,

2648

sizeof(dummy_test_password)-1);

2649

g_assert_nonnull(password.data);

2650

g_assert_cmpint(memcmp(dummy_test_password, password.data,

2651

sizeof(dummy_test_password)-1), ==, 0);

2652

}

2653

2654

static

2655

void test_start_mandos_client_helper_directory(test_fixture *fixture,

2656

__attribute__((unused))

2657

gconstpointer

2658

user_data){

2659

bool mandos_client_exited = false;

2660

bool quit_now = false;

2661

__attribute__((cleanup(cleanup_close)))

2662

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2663

g_assert_cmpint(epoll_fd, >=, 0);

2664

__attribute__((cleanup(cleanup_queue)))

2665

task_queue *queue = create_queue();

2666

g_assert_nonnull(queue);

2667

__attribute__((cleanup(cleanup_buffer)))

2668

buffer password = {};

2669

bool password_is_read = false;

2670

const char helper_directory[] = "/nonexistent";

2671

const char *const argv[] = { "/bin/sh", "-c",

2672

"printf %s \"${MANDOSPLUGINHELPERDIR}\"", NULL };

2673

2674

const bool success = start_mandos_client(queue, epoll_fd,

2675

&mandos_client_exited,

2676

&quit_now, &password,

2677

&password_is_read,

2678

&fixture->orig_sigaction,

2679

fixture->orig_sigmask,

2680

helper_directory, 0, 0,

2681

argv);

2682

g_assert_true(success);

2683

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2684

2685

struct timespec starttime, currtime;

2686

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2687

do {

2688

queue->next_run = 0;

2689

string_set cancelled_filenames = {};

2690

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2691

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2692

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2693

} while(((queue->length) > 0)

2694

and (not quit_now)

2695

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2696

2697

g_assert_false(quit_now);

2698

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2699

g_assert_true(mandos_client_exited);

2700

2701

g_assert_true(password_is_read);

2702

g_assert_cmpint((int)password.length, ==,

2703

sizeof(helper_directory)-1);

2704

g_assert_nonnull(password.data);

2705

g_assert_cmpint(memcmp(helper_directory, password.data,

2706

sizeof(helper_directory)-1), ==, 0);

2707

}

2708

2709

__attribute__((nonnull, warn_unused_result))

2710

static bool proc_status_sigblk_to_sigset(const char *const,

2711

sigset_t *const);

2712

2713

static void test_start_mandos_client_sigmask(test_fixture *fixture,

2714

__attribute__((unused))

2715

gconstpointer user_data){

2716

bool mandos_client_exited = false;

2717

bool quit_now = false;

2718

__attribute__((cleanup(cleanup_close)))

2719

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2720

g_assert_cmpint(epoll_fd, >=, 0);

2721

__attribute__((cleanup(cleanup_queue)))

2722

task_queue *queue = create_queue();

2723

g_assert_nonnull(queue);

2724

__attribute__((cleanup(cleanup_buffer)))

2725

buffer password = {};

2726

bool password_is_read = false;

2727

const char helper_directory[] = "/nonexistent";

2728

/* see proc(5) for format of /proc/self/status */

2729

const char *const argv[] = { "/usr/bin/awk",

2730

"$1==\"SigBlk:\"{ print $2 }", "/proc/self/status", NULL };

2731

2732

g_assert_true(start_mandos_client(queue, epoll_fd,

2733

&mandos_client_exited, &quit_now,

2734

&password, &password_is_read,

2735

&fixture->orig_sigaction,

2736

fixture->orig_sigmask,

2737

helper_directory, 0, 0, argv));

2738

2739

struct timespec starttime, currtime;

2740

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2741

do {

2742

queue->next_run = 0;

2743

string_set cancelled_filenames = {};

2744

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2745

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2746

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2747

} while((not (mandos_client_exited and password_is_read))

2748

and (not quit_now)

2749

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2750

g_assert_true(mandos_client_exited);

2751

g_assert_true(password_is_read);

2752

2753

sigset_t parsed_sigmask;

2754

g_assert_true(proc_status_sigblk_to_sigset(password.data,

2755

&parsed_sigmask));

2756

2757

for(int signum = 1; signum < NSIG; signum++){

2758

const bool has_signal = sigismember(&parsed_sigmask, signum);

2759

if(sigismember(&fixture->orig_sigmask, signum)){

2760

g_assert_true(has_signal);

2761

} else {

2762

g_assert_false(has_signal);

2763

}

2764

}

2765

}

2766

2767

__attribute__((nonnull, warn_unused_result))

2768

static bool proc_status_sigblk_to_sigset(const char *const sigblk,

2769

sigset_t *const sigmask){

2770

/* parse /proc/PID/status SigBlk value and convert to a sigset_t */

2771

uintmax_t scanned_sigmask;

2772

if(sscanf(sigblk, "%" SCNxMAX " ", &scanned_sigmask) != 1){

2773

return false;

2774

}

2775

if(sigemptyset(sigmask) != 0){

2776

return false;

2777

}

2778

for(int signum = 1; signum < NSIG; signum++){

2779

if(scanned_sigmask & ((uintmax_t)1 << (signum-1))){

2780

if(sigaddset(sigmask, signum) != 0){

2781

return false;

2782

}

2783

}

2784

}

2785

return true;

2786

}

2787

2788

static void run_task_with_stderr_to_dev_null(const task_context task,

2789

task_queue *const queue);

2790

2791

static

2792

void test_wait_for_mandos_client_exit_badpid(__attribute__((unused))

2793

test_fixture *fixture,

2794

__attribute__((unused))

2795

gconstpointer user_data){

2796

2797

bool mandos_client_exited = false;

2798

bool quit_now = false;

2799

2800

__attribute__((cleanup(cleanup_queue)))

2801

task_queue *queue = create_queue();

2802

g_assert_nonnull(queue);

2803

const task_context task = {

2804

.func=wait_for_mandos_client_exit,

2805

.pid=1,

2806

.mandos_client_exited=&mandos_client_exited,

2807

.quit_now=&quit_now,

2808

};

2809

run_task_with_stderr_to_dev_null(task, queue);

2810

2811

g_assert_false(mandos_client_exited);

2812

g_assert_true(quit_now);

2813

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2814

}

2815

2816

static void run_task_with_stderr_to_dev_null(const task_context task,

2817

task_queue *const queue){

2818

FILE *real_stderr = stderr;

2819

FILE *devnull = fopen("/dev/null", "we");

2820

g_assert_nonnull(devnull);

2821

2822

stderr = devnull;

2823

task.func(task, queue);

2824

stderr = real_stderr;

2825

2826

g_assert_cmpint(fclose(devnull), ==, 0);

2827

}

2828

2829

static

2830

void test_wait_for_mandos_client_exit_noexit(test_fixture *fixture,

2831

__attribute__((unused))

2832

gconstpointer user_data){

2833

bool mandos_client_exited = false;

2834

bool quit_now = false;

2835

2836

pid_t create_eternal_process(void){

2837

const pid_t pid = fork();

2838

if(pid == 0){ /* Child */

2839

if(not restore_signal_handler(&fixture->orig_sigaction)){

2840

_exit(EXIT_FAILURE);

2841

}

2842

if(not restore_sigmask(&fixture->orig_sigmask)){

2843

_exit(EXIT_FAILURE);

2844

}

2845

while(true){

2846

pause();

2847

}

2848

}

2849

return pid;

2850

}

2851

pid_t pid = create_eternal_process();

2852

g_assert_true(pid != -1);

2853

2854

__attribute__((cleanup(cleanup_queue)))

2855

task_queue *queue = create_queue();

2856

g_assert_nonnull(queue);

2857

const task_context task = {

2858

.func=wait_for_mandos_client_exit,

2859

.pid=pid,

2860

.mandos_client_exited=&mandos_client_exited,

2861

.quit_now=&quit_now,

2862

};

2863

task.func(task, queue);

2864

2865

g_assert_false(mandos_client_exited);

2866

g_assert_false(quit_now);

2867

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

2868

2869

g_assert_nonnull(find_matching_task(queue, (task_context){

2870

.func=wait_for_mandos_client_exit,

2871

.pid=task.pid,

2872

.mandos_client_exited=&mandos_client_exited,

2873

.quit_now=&quit_now,

2874

}));

2875

}

2876

2877

static

2878

void test_wait_for_mandos_client_exit_success(test_fixture *fixture,

2879

__attribute__((unused))

2880

gconstpointer

2881

user_data){

2882

bool mandos_client_exited = false;

2883

bool quit_now = false;

2884

2885

pid_t create_successful_process(void){

2886

const pid_t pid = fork();

2887

if(pid == 0){ /* Child */

2888

if(not restore_signal_handler(&fixture->orig_sigaction)){

2889

_exit(EXIT_FAILURE);

2890

}

2891

if(not restore_sigmask(&fixture->orig_sigmask)){

2892

_exit(EXIT_FAILURE);

2893

}

2894

exit(EXIT_SUCCESS);

2895

}

2896

return pid;

2897

}

2898

const pid_t pid = create_successful_process();

2899

g_assert_true(pid != -1);

2900

2901

__attribute__((cleanup(cleanup_queue)))

2902

task_queue *queue = create_queue();

2903

g_assert_nonnull(queue);

2904

const task_context initial_task = {

2905

.func=wait_for_mandos_client_exit,

2906

.pid=pid,

2907

.mandos_client_exited=&mandos_client_exited,

2908

.quit_now=&quit_now,

2909

};

2910

g_assert_true(add_to_queue(queue, initial_task));

2911

2912

struct timespec starttime, currtime;

2913

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2914

__attribute__((cleanup(cleanup_close)))

2915

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2916

do {

2917

queue->next_run = 0;

2918

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2919

g_assert_true(run_queue(&queue, (string_set[]){{}}, &quit_now));

2920

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2921

} while((not mandos_client_exited)

2922

and (not quit_now)

2923

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2924

2925

g_assert_true(mandos_client_exited);

2926

g_assert_false(quit_now);

2927

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2928

}

2929

2930

static

2931

void test_wait_for_mandos_client_exit_failure(test_fixture *fixture,

2932

__attribute__((unused))

2933

gconstpointer

2934

user_data){

2935

bool mandos_client_exited = false;

2936

bool quit_now = false;

2937

2938

pid_t create_failing_process(void){

2939

const pid_t pid = fork();

2940

if(pid == 0){ /* Child */

2941

if(not restore_signal_handler(&fixture->orig_sigaction)){

2942

_exit(EXIT_FAILURE);

2943

}

2944

if(not restore_sigmask(&fixture->orig_sigmask)){

2945

_exit(EXIT_FAILURE);

2946

}

2947

exit(EXIT_FAILURE);

2948

}

2949

return pid;

2950

}

2951

const pid_t pid = create_failing_process();

2952

g_assert_true(pid != -1);

2953

2954

__attribute__((cleanup(string_set_clear)))

2955

string_set cancelled_filenames = {};

2956

__attribute__((cleanup(cleanup_close)))

2957

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2958

g_assert_cmpint(epoll_fd, >=, 0);

2959

__attribute__((cleanup(cleanup_queue)))

2960

task_queue *queue = create_queue();

2961

g_assert_nonnull(queue);

2962

g_assert_true(add_to_queue(queue, (task_context){

2963

.func=wait_for_mandos_client_exit,

2964

.pid=pid,

2965

.mandos_client_exited=&mandos_client_exited,

2966

.quit_now=&quit_now,

2967

}));

2968

2969

g_assert_true(sigismember(&fixture->orig_sigmask, SIGCHLD) == 0);

2970

2971

__attribute__((cleanup(cleanup_close)))

2972

const int devnull_fd = open("/dev/null",

2973

O_WRONLY | O_CLOEXEC | O_NOCTTY);

2974

g_assert_cmpint(devnull_fd, >=, 0);

2975

__attribute__((cleanup(cleanup_close)))

2976

const int real_stderr_fd = dup(STDERR_FILENO);

2977

g_assert_cmpint(real_stderr_fd, >=, 0);

2978

2979

struct timespec starttime, currtime;

2980

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2981

do {

2982

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2983

dup2(devnull_fd, STDERR_FILENO);

2984

const bool success = run_queue(&queue, &cancelled_filenames,

2985

&quit_now);

2986

dup2(real_stderr_fd, STDERR_FILENO);

2987

if(not success){

2988

break;

2989

}

2990

2991

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2992

} while((not mandos_client_exited)

2993

and (not quit_now)

2994

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2995

2996

g_assert_true(quit_now);

2997

g_assert_true(mandos_client_exited);

2998

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2999

}

3000

3001

static

3002

void test_wait_for_mandos_client_exit_killed(test_fixture *fixture,

3003

__attribute__((unused))

3004

gconstpointer user_data){

3005

bool mandos_client_exited = false;

3006

bool quit_now = false;

3007

3008

pid_t create_killed_process(void){

3009

const pid_t pid = fork();

3010

if(pid == 0){ /* Child */

3011

if(not restore_signal_handler(&fixture->orig_sigaction)){

3012

_exit(EXIT_FAILURE);

3013

}

3014

if(not restore_sigmask(&fixture->orig_sigmask)){

3015

_exit(EXIT_FAILURE);

3016

}

3017

while(true){

3018

pause();

3019

}

3020

}

3021

kill(pid, SIGKILL);

3022

return pid;

3023

}

3024

const pid_t pid = create_killed_process();

3025

g_assert_true(pid != -1);

3026

3027

__attribute__((cleanup(string_set_clear)))

3028

string_set cancelled_filenames = {};

3029

__attribute__((cleanup(cleanup_close)))

3030

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3031

g_assert_cmpint(epoll_fd, >=, 0);

3032

__attribute__((cleanup(cleanup_queue)))

3033

task_queue *queue = create_queue();

3034

g_assert_nonnull(queue);

3035

g_assert_true(add_to_queue(queue, (task_context){

3036

.func=wait_for_mandos_client_exit,

3037

.pid=pid,

3038

.mandos_client_exited=&mandos_client_exited,

3039

.quit_now=&quit_now,

3040

}));

3041

3042

__attribute__((cleanup(cleanup_close)))

3043

const int devnull_fd = open("/dev/null",

3044

O_WRONLY | O_CLOEXEC, O_NOCTTY);

3045

g_assert_cmpint(devnull_fd, >=, 0);

3046

__attribute__((cleanup(cleanup_close)))

3047

const int real_stderr_fd = dup(STDERR_FILENO);

3048

g_assert_cmpint(real_stderr_fd, >=, 0);

3049

3050

struct timespec starttime, currtime;

3051

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

3052

do {

3053

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

3054

dup2(devnull_fd, STDERR_FILENO);

3055

const bool success = run_queue(&queue, &cancelled_filenames,

3056

&quit_now);

3057

dup2(real_stderr_fd, STDERR_FILENO);

3058

if(not success){

3059

break;

3060

}

3061

3062

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

3063

} while((not mandos_client_exited)

3064

and (not quit_now)

3065

and ((currtime.tv_sec - starttime.tv_sec) < 10));

3066

3067

g_assert_true(mandos_client_exited);

3068

g_assert_true(quit_now);

3069

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3070

}

3071

3072

static bool epoll_set_does_not_contain(int, int);

3073

3074

static

3075

void test_read_mandos_client_output_readerror(__attribute__((unused))

3076

test_fixture *fixture,

3077

__attribute__((unused))

3078

gconstpointer

3079

user_data){

3080

__attribute__((cleanup(cleanup_close)))

3081

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3082

g_assert_cmpint(epoll_fd, >=, 0);

3083

3084

__attribute__((cleanup(cleanup_buffer)))

3085

buffer password = {};

3086

3087

/* Reading /proc/self/mem from offset 0 will always give EIO */

3088

const int fd = open("/proc/self/mem",

3089

O_RDONLY | O_CLOEXEC | O_NOCTTY);

3090

3091

bool password_is_read = false;

3092

bool quit_now = false;

3093

__attribute__((cleanup(cleanup_queue)))

3094

task_queue *queue = create_queue();

3095

g_assert_nonnull(queue);

3096

3097

task_context task = {

3098

.func=read_mandos_client_output,

3099

.epoll_fd=epoll_fd,

3100

.fd=fd,

3101

.password=&password,

3102

.password_is_read=&password_is_read,

3103

.quit_now=&quit_now,

3104

};

3105

run_task_with_stderr_to_dev_null(task, queue);

3106

g_assert_false(password_is_read);

3107

g_assert_cmpint((int)password.length, ==, 0);

3108

g_assert_true(quit_now);

3109

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3110

3111

g_assert_true(epoll_set_does_not_contain(epoll_fd, fd));

3112

3113

g_assert_cmpint(close(fd), ==, -1);

3114

}

3115

3116

static bool epoll_set_does_not_contain(int epoll_fd, int fd){

3117

return not epoll_set_contains(epoll_fd, fd, 0);

3118

}

3119

3120

static

3121

void test_read_mandos_client_output_nodata(__attribute__((unused))

3122

test_fixture *fixture,

3123

__attribute__((unused))

3124

gconstpointer user_data){

3125

__attribute__((cleanup(cleanup_close)))

3126

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3127

g_assert_cmpint(epoll_fd, >=, 0);

3128

3129

int pipefds[2];

3130

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3131

3132

__attribute__((cleanup(cleanup_buffer)))

3133

buffer password = {};

3134

3135

bool password_is_read = false;

3136

bool quit_now = false;

3137

__attribute__((cleanup(cleanup_queue)))

3138

task_queue *queue = create_queue();

3139

g_assert_nonnull(queue);

3140

3141

task_context task = {

3142

.func=read_mandos_client_output,

3143

.epoll_fd=epoll_fd,

3144

.fd=pipefds[0],

3145

.password=&password,

3146

.password_is_read=&password_is_read,

3147

.quit_now=&quit_now,

3148

};

3149

task.func(task, queue);

3150

g_assert_false(password_is_read);

3151

g_assert_cmpint((int)password.length, ==, 0);

3152

g_assert_false(quit_now);

3153

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3154

3155

g_assert_nonnull(find_matching_task(queue, (task_context){

3156

.func=read_mandos_client_output,

3157

.epoll_fd=epoll_fd,

3158

.fd=pipefds[0],

3159

.password=&password,

3160

.password_is_read=&password_is_read,

3161

.quit_now=&quit_now,

3162

}));

3163

3164

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3165

EPOLLIN | EPOLLRDHUP));

3166

3167

g_assert_cmpint(close(pipefds[1]), ==, 0);

3168

}

3169

3170

static void test_read_mandos_client_output_eof(__attribute__((unused))

3171

test_fixture *fixture,

3172

__attribute__((unused))

3173

gconstpointer

3174

user_data){

3175

__attribute__((cleanup(cleanup_close)))

3176

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3177

g_assert_cmpint(epoll_fd, >=, 0);

3178

3179

int pipefds[2];

3180

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3181

g_assert_cmpint(close(pipefds[1]), ==, 0);

3182

3183

__attribute__((cleanup(cleanup_buffer)))

3184

buffer password = {};

3185

3186

bool password_is_read = false;

3187

bool quit_now = false;

3188

__attribute__((cleanup(cleanup_queue)))

3189

task_queue *queue = create_queue();

3190

g_assert_nonnull(queue);

3191

3192

task_context task = {

3193

.func=read_mandos_client_output,

3194

.epoll_fd=epoll_fd,

3195

.fd=pipefds[0],

3196

.password=&password,

3197

.password_is_read=&password_is_read,

3198

.quit_now=&quit_now,

3199

};

3200

task.func(task, queue);

3201

g_assert_true(password_is_read);

3202

g_assert_cmpint((int)password.length, ==, 0);

3203

g_assert_false(quit_now);

3204

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3205

3206

g_assert_true(epoll_set_does_not_contain(epoll_fd, pipefds[0]));

3207

3208

g_assert_cmpint(close(pipefds[0]), ==, -1);

3209

}

3210

3211

static

3212

void test_read_mandos_client_output_once(__attribute__((unused))

3213

test_fixture *fixture,

3214

__attribute__((unused))

3215

gconstpointer user_data){

3216

__attribute__((cleanup(cleanup_close)))

3217

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3218

g_assert_cmpint(epoll_fd, >=, 0);

3219

3220

int pipefds[2];

3221

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3222

3223

const char dummy_test_password[] = "dummy test password";

3224

/* Start with a pre-allocated buffer */

3225

__attribute__((cleanup(cleanup_buffer)))

3226

buffer password = {

3227

.data=malloc(sizeof(dummy_test_password)),

3228

.length=0,

3229

.allocated=sizeof(dummy_test_password),

3230

};

3231

g_assert_nonnull(password.data);

3232

if(mlock(password.data, password.allocated) != 0){

3233

g_assert_true(errno == EPERM or errno == ENOMEM);

3234

}

3235

3236

bool password_is_read = false;

3237

bool quit_now = false;

3238

__attribute__((cleanup(cleanup_queue)))

3239

task_queue *queue = create_queue();

3240

g_assert_nonnull(queue);

3241

3242

g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);

3243

g_assert_cmpint((int)write(pipefds[1], dummy_test_password,

3244

sizeof(dummy_test_password)),

3245

==, (int)sizeof(dummy_test_password));

3246

3247

task_context task = {

3248

.func=read_mandos_client_output,

3249

.epoll_fd=epoll_fd,

3250

.fd=pipefds[0],

3251

.password=&password,

3252

.password_is_read=&password_is_read,

3253

.quit_now=&quit_now,

3254

};

3255

task.func(task, queue);

3256

3257

g_assert_false(password_is_read);

3258

g_assert_cmpint((int)password.length, ==,

3259

(int)sizeof(dummy_test_password));

3260

g_assert_nonnull(password.data);

3261

g_assert_cmpint(memcmp(password.data, dummy_test_password,

3262

sizeof(dummy_test_password)), ==, 0);

3263

3264

g_assert_false(quit_now);

3265

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3266

3267

g_assert_nonnull(find_matching_task(queue, (task_context){

3268

.func=read_mandos_client_output,

3269

.epoll_fd=epoll_fd,

3270

.fd=pipefds[0],

3271

.password=&password,

3272

.password_is_read=&password_is_read,

3273

.quit_now=&quit_now,

3274

}));

3275

3276

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3277

EPOLLIN | EPOLLRDHUP));

3278

3279

g_assert_cmpint(close(pipefds[1]), ==, 0);

3280

}

3281

3282

static

3283

void test_read_mandos_client_output_malloc(__attribute__((unused))

3284

test_fixture *fixture,

3285

__attribute__((unused))

3286

gconstpointer user_data){

3287

__attribute__((cleanup(cleanup_close)))

3288

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3289

g_assert_cmpint(epoll_fd, >=, 0);

3290

3291

int pipefds[2];

3292

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3293

3294

const char dummy_test_password[] = "dummy test password";

3295

/* Start with an empty buffer */

3296

__attribute__((cleanup(cleanup_buffer)))

3297

buffer password = {};

3298

3299

bool password_is_read = false;

3300

bool quit_now = false;

3301

__attribute__((cleanup(cleanup_queue)))

3302

task_queue *queue = create_queue();

3303

g_assert_nonnull(queue);

3304

3305

g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);

3306

g_assert_cmpint((int)write(pipefds[1], dummy_test_password,

3307

sizeof(dummy_test_password)),

3308

==, (int)sizeof(dummy_test_password));

3309

3310

task_context task = {

3311

.func=read_mandos_client_output,

3312

.epoll_fd=epoll_fd,

3313

.fd=pipefds[0],

3314

.password=&password,

3315

.password_is_read=&password_is_read,

3316

.quit_now=&quit_now,

3317

};

3318

task.func(task, queue);

3319

3320

g_assert_false(password_is_read);

3321

g_assert_cmpint((int)password.length, ==,

3322

(int)sizeof(dummy_test_password));

3323

g_assert_nonnull(password.data);

3324

g_assert_cmpint(memcmp(password.data, dummy_test_password,

3325

sizeof(dummy_test_password)), ==, 0);

3326

3327

g_assert_false(quit_now);

3328

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3329

3330

g_assert_nonnull(find_matching_task(queue, (task_context){

3331

.func=read_mandos_client_output,

3332

.epoll_fd=epoll_fd,

3333

.fd=pipefds[0],

3334

.password=&password,

3335

.password_is_read=&password_is_read,

3336

.quit_now=&quit_now,

3337

}));

3338

3339

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3340

EPOLLIN | EPOLLRDHUP));

3341

3342

g_assert_cmpint(close(pipefds[1]), ==, 0);

3343

}

3344

3345

static

3346

void test_read_mandos_client_output_append(__attribute__((unused))

3347

test_fixture *fixture,

3348

__attribute__((unused))

3349

gconstpointer user_data){

3350

__attribute__((cleanup(cleanup_close)))

3351

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3352

g_assert_cmpint(epoll_fd, >=, 0);

3353

3354

int pipefds[2];

3355

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3356

3357

const char dummy_test_password[] = "dummy test password";

3358

__attribute__((cleanup(cleanup_buffer)))

3359

buffer password = {

3360

.data=malloc(PIPE_BUF),

3361

.length=PIPE_BUF,

3362

.allocated=PIPE_BUF,

3363

};

3364

g_assert_nonnull(password.data);

3365

if(mlock(password.data, password.allocated) != 0){

3366

g_assert_true(errno == EPERM or errno == ENOMEM);

3367

}

3368

3369

memset(password.data, 'x', PIPE_BUF);

3370

char password_expected[PIPE_BUF];

3371

memcpy(password_expected, password.data, PIPE_BUF);

3372

3373

bool password_is_read = false;

3374

bool quit_now = false;

3375

__attribute__((cleanup(cleanup_queue)))

3376

task_queue *queue = create_queue();

3377

g_assert_nonnull(queue);

3378

3379

g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);

3380

g_assert_cmpint((int)write(pipefds[1], dummy_test_password,

3381

sizeof(dummy_test_password)),

3382

==, (int)sizeof(dummy_test_password));

3383

3384

task_context task = {

3385

.func=read_mandos_client_output,

3386

.epoll_fd=epoll_fd,

3387

.fd=pipefds[0],

3388

.password=&password,

3389

.password_is_read=&password_is_read,

3390

.quit_now=&quit_now,

3391

};

3392

task.func(task, queue);

3393

3394

g_assert_false(password_is_read);

3395

g_assert_cmpint((int)password.length, ==,

3396

PIPE_BUF + sizeof(dummy_test_password));

3397

g_assert_nonnull(password.data);

3398

g_assert_cmpint(memcmp(password_expected, password.data, PIPE_BUF),

3399

==, 0);

3400

g_assert_cmpint(memcmp(password.data + PIPE_BUF,

3401

dummy_test_password,

3402

sizeof(dummy_test_password)), ==, 0);

3403

g_assert_false(quit_now);

3404

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3405

3406

g_assert_nonnull(find_matching_task(queue, (task_context){

3407

.func=read_mandos_client_output,

3408

.epoll_fd=epoll_fd,

3409

.fd=pipefds[0],

3410

.password=&password,

3411

.password_is_read=&password_is_read,

3412

.quit_now=&quit_now,

3413

}));

3414

3415

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3416

EPOLLIN | EPOLLRDHUP));

3417

}

3418

3419

static char *make_temporary_directory(void);

3420

3421

static void test_add_inotify_dir_watch(__attribute__((unused))

3422

test_fixture *fixture,

3423

__attribute__((unused))

3424

gconstpointer user_data){

3425

__attribute__((cleanup(cleanup_close)))

3426

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3427

g_assert_cmpint(epoll_fd, >=, 0);

3428

__attribute__((cleanup(cleanup_queue)))

3429

task_queue *queue = create_queue();

3430

g_assert_nonnull(queue);

3431

__attribute__((cleanup(string_set_clear)))

3432

string_set cancelled_filenames = {};

3433

const mono_microsecs current_time = 0;

3434

3435

bool quit_now = false;

3436

buffer password = {};

3437

bool mandos_client_exited = false;

3438

bool password_is_read = false;

3439

3440

__attribute__((cleanup(cleanup_string)))

3441

char *tempdir = make_temporary_directory();

3442

g_assert_nonnull(tempdir);

3443

3444

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3445

&password, tempdir,

3446

&cancelled_filenames,

3447

&current_time,

3448

&mandos_client_exited,

3449

&password_is_read));

3450

3451

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3452

3453

const task_context *const added_read_task

3454

= find_matching_task(queue, (task_context){

3455

.func=read_inotify_event,

3456

.epoll_fd=epoll_fd,

3457

.quit_now=&quit_now,

3458

.password=&password,

3459

.filename=tempdir,

3460

.cancelled_filenames=&cancelled_filenames,

3461

.current_time=&current_time,

3462

.mandos_client_exited=&mandos_client_exited,

3463

.password_is_read=&password_is_read,

3464

});

3465

g_assert_nonnull(added_read_task);

3466

3467

g_assert_cmpint(added_read_task->fd, >, 2);

3468

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3469

g_assert_true(epoll_set_contains(added_read_task->epoll_fd,

3470

added_read_task->fd,

3471

EPOLLIN | EPOLLRDHUP));

3472

3473

g_assert_cmpint(rmdir(tempdir), ==, 0);

3474

}

3475

3476

static char *make_temporary_directory(void){

3477

char *name = strdup("/tmp/mandosXXXXXX");

3478

g_assert_nonnull(name);

3479

char *result = mkdtemp(name);

3480

if(result == NULL){

3481

free(name);

3482

}

3483

return result;

3484

}

3485

3486

static void test_add_inotify_dir_watch_fail(__attribute__((unused))

3487

test_fixture *fixture,

3488

__attribute__((unused))

3489

gconstpointer user_data){

3490

__attribute__((cleanup(cleanup_close)))

3491

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3492

g_assert_cmpint(epoll_fd, >=, 0);

3493

__attribute__((cleanup(cleanup_queue)))

3494

task_queue *queue = create_queue();

3495

g_assert_nonnull(queue);

3496

__attribute__((cleanup(string_set_clear)))

3497

string_set cancelled_filenames = {};

3498

const mono_microsecs current_time = 0;

3499

3500

bool quit_now = false;

3501

buffer password = {};

3502

bool mandos_client_exited = false;

3503

bool password_is_read = false;

3504

3505

const char nonexistent_dir[] = "/nonexistent";

3506

3507

FILE *real_stderr = stderr;

3508

FILE *devnull = fopen("/dev/null", "we");

3509

g_assert_nonnull(devnull);

3510

stderr = devnull;

3511

g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3512

&password, nonexistent_dir,

3513

&cancelled_filenames,

3514

&current_time,

3515

&mandos_client_exited,

3516

&password_is_read));

3517

stderr = real_stderr;

3518

g_assert_cmpint(fclose(devnull), ==, 0);

3519

3520

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3521

}

3522

3523

static void test_add_inotify_dir_watch_nondir(__attribute__((unused))

3524

test_fixture *fixture,

3525

__attribute__((unused))

3526

gconstpointer

3527

user_data){

3528

__attribute__((cleanup(cleanup_close)))

3529

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3530

g_assert_cmpint(epoll_fd, >=, 0);

3531

__attribute__((cleanup(cleanup_queue)))

3532

task_queue *queue = create_queue();

3533

g_assert_nonnull(queue);

3534

__attribute__((cleanup(string_set_clear)))

3535

string_set cancelled_filenames = {};

3536

const mono_microsecs current_time = 0;

3537

3538

bool quit_now = false;

3539

buffer password = {};

3540

bool mandos_client_exited = false;

3541

bool password_is_read = false;

3542

3543

const char not_a_directory[] = "/dev/tty";

3544

3545

FILE *real_stderr = stderr;

3546

FILE *devnull = fopen("/dev/null", "we");

3547

g_assert_nonnull(devnull);

3548

stderr = devnull;

3549

g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3550

&password, not_a_directory,

3551

&cancelled_filenames,

3552

&current_time,

3553

&mandos_client_exited,

3554

&password_is_read));

3555

stderr = real_stderr;

3556

g_assert_cmpint(fclose(devnull), ==, 0);

3557

3558

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3559

}

3560

3561

static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))

3562

test_fixture *fixture,

3563

__attribute__((unused))

3564

gconstpointer

3565

user_data){

3566

__attribute__((cleanup(cleanup_close)))

3567

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3568

g_assert_cmpint(epoll_fd, >=, 0);

3569

__attribute__((cleanup(cleanup_queue)))

3570

task_queue *queue = create_queue();

3571

g_assert_nonnull(queue);

3572

__attribute__((cleanup(string_set_clear)))

3573

string_set cancelled_filenames = {};

3574

const mono_microsecs current_time = 0;

3575

3576

bool quit_now = false;

3577

buffer password = {};

3578

bool mandos_client_exited = false;

3579

bool password_is_read = false;

3580

3581

__attribute__((cleanup(cleanup_string)))

3582

char *tempdir = make_temporary_directory();

3583

g_assert_nonnull(tempdir);

3584

3585

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3586

&password, tempdir,

3587

&cancelled_filenames,

3588

&current_time,

3589

&mandos_client_exited,

3590

&password_is_read));

3591

3592

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3593

3594

const task_context *const added_read_task

3595

= find_matching_task(queue,

3596

(task_context){ .func=read_inotify_event });

3597

g_assert_nonnull(added_read_task);

3598

3599

g_assert_cmpint(added_read_task->fd, >, 2);

3600

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3601

3602

/* "sufficient to read at least one event." - inotify(7) */

3603

const size_t ievent_size = (sizeof(struct inotify_event)

3604

+ NAME_MAX + 1);

3605

struct inotify_event *ievent = malloc(ievent_size);

3606

g_assert_nonnull(ievent);

3607

3608

g_assert_cmpint(read(added_read_task->fd, ievent, ievent_size), ==,

3609

-1);

3610

g_assert_cmpint(errno, ==, EAGAIN);

3611

3612

free(ievent);

3613

3614

g_assert_cmpint(rmdir(tempdir), ==, 0);

3615

}

3616

3617

static char *make_temporary_file_in_directory(const char

3618

*const dir);

3619

3620

static

3621

void test_add_inotify_dir_watch_IN_CLOSE_WRITE(__attribute__((unused))

3622

test_fixture *fixture,

3623

__attribute__((unused))

3624

gconstpointer

3625

user_data){

3626

__attribute__((cleanup(cleanup_close)))

3627

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3628

g_assert_cmpint(epoll_fd, >=, 0);

3629

__attribute__((cleanup(cleanup_queue)))

3630

task_queue *queue = create_queue();

3631

g_assert_nonnull(queue);

3632

__attribute__((cleanup(string_set_clear)))

3633

string_set cancelled_filenames = {};

3634

const mono_microsecs current_time = 0;

3635

3636

bool quit_now = false;

3637

buffer password = {};

3638

bool mandos_client_exited = false;

3639

bool password_is_read = false;

3640

3641

__attribute__((cleanup(cleanup_string)))

3642

char *tempdir = make_temporary_directory();

3643

g_assert_nonnull(tempdir);

3644

3645

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3646

&password, tempdir,

3647

&cancelled_filenames,

3648

&current_time,

3649

&mandos_client_exited,

3650

&password_is_read));

3651

3652

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3653

3654

const task_context *const added_read_task

3655

= find_matching_task(queue,

3656

(task_context){ .func=read_inotify_event });

3657

g_assert_nonnull(added_read_task);

3658

3659

g_assert_cmpint(added_read_task->fd, >, 2);

3660

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3661

3662

__attribute__((cleanup(cleanup_string)))

3663

char *filename = make_temporary_file_in_directory(tempdir);

3664

g_assert_nonnull(filename);

3665

3666

/* "sufficient to read at least one event." - inotify(7) */

3667

const size_t ievent_size = (sizeof(struct inotify_event)

3668

+ NAME_MAX + 1);

3669

struct inotify_event *ievent = malloc(ievent_size);

3670

g_assert_nonnull(ievent);

3671

3672

ssize_t read_size = 0;

3673

read_size = read(added_read_task->fd, ievent, ievent_size);

3674

3675

g_assert_cmpint((int)read_size, >, 0);

3676

g_assert_true(ievent->mask & IN_CLOSE_WRITE);

3677

g_assert_cmpstr(ievent->name, ==, basename(filename));

3678

3679

free(ievent);

3680

3681

g_assert_cmpint(unlink(filename), ==, 0);

3682

g_assert_cmpint(rmdir(tempdir), ==, 0);

3683

}

3684

3685

static char *make_temporary_prefixed_file_in_directory(const char

3686

*const prefix,

3687

const char

3688

*const dir){

3689

char *filename = NULL;

3690

g_assert_cmpint(asprintf(&filename, "%s/%sXXXXXX", dir, prefix),

3691

>, 0);

3692

g_assert_nonnull(filename);

3693

const int fd = mkostemp(filename, O_CLOEXEC);

3694

g_assert_cmpint(fd, >=, 0);

3695

g_assert_cmpint(close(fd), ==, 0);

3696

return filename;

3697

}

3698

3699

static char *make_temporary_file_in_directory(const char

3700

*const dir){

3701

return make_temporary_prefixed_file_in_directory("temp", dir);

3702

}

3703

3704

static

3705

void test_add_inotify_dir_watch_IN_MOVED_TO(__attribute__((unused))

3706

test_fixture *fixture,

3707

__attribute__((unused))

3708

gconstpointer user_data){

3709

__attribute__((cleanup(cleanup_close)))

3710

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3711

g_assert_cmpint(epoll_fd, >=, 0);

3712

__attribute__((cleanup(cleanup_queue)))

3713

task_queue *queue = create_queue();

3714

g_assert_nonnull(queue);

3715

__attribute__((cleanup(string_set_clear)))

3716

string_set cancelled_filenames = {};

3717

const mono_microsecs current_time = 0;

3718

3719

bool quit_now = false;

3720

buffer password = {};

3721

bool mandos_client_exited = false;

3722

bool password_is_read = false;

3723

3724

__attribute__((cleanup(cleanup_string)))

3725

char *watchdir = make_temporary_directory();

3726

g_assert_nonnull(watchdir);

3727

3728

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3729

&password, watchdir,

3730

&cancelled_filenames,

3731

&current_time,

3732

&mandos_client_exited,

3733

&password_is_read));

3734

3735

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3736

3737

const task_context *const added_read_task

3738

= find_matching_task(queue,

3739

(task_context){ .func=read_inotify_event });

3740

g_assert_nonnull(added_read_task);

3741

3742

g_assert_cmpint(added_read_task->fd, >, 2);

3743

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3744

3745

char *sourcedir = make_temporary_directory();

3746

g_assert_nonnull(sourcedir);

3747

3748

__attribute__((cleanup(cleanup_string)))

3749

char *filename = make_temporary_file_in_directory(sourcedir);

3750

g_assert_nonnull(filename);

3751

3752

__attribute__((cleanup(cleanup_string)))

3753

char *targetfilename = NULL;

3754

g_assert_cmpint(asprintf(&targetfilename, "%s/%s", watchdir,

3755

basename(filename)), >, 0);

3756

g_assert_nonnull(targetfilename);

3757

3758

g_assert_cmpint(rename(filename, targetfilename), ==, 0);

3759

g_assert_cmpint(rmdir(sourcedir), ==, 0);

3760

free(sourcedir);

3761

3762

/* "sufficient to read at least one event." - inotify(7) */

3763

const size_t ievent_size = (sizeof(struct inotify_event)

3764

+ NAME_MAX + 1);

3765

struct inotify_event *ievent = malloc(ievent_size);

3766

g_assert_nonnull(ievent);

3767

3768

ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);

3769

3770

g_assert_cmpint((int)read_size, >, 0);

3771

g_assert_true(ievent->mask & IN_MOVED_TO);

3772

g_assert_cmpstr(ievent->name, ==, basename(targetfilename));

3773

3774

free(ievent);

3775

3776

g_assert_cmpint(unlink(targetfilename), ==, 0);

3777

g_assert_cmpint(rmdir(watchdir), ==, 0);

3778

}

3779

3780

static

3781

void test_add_inotify_dir_watch_IN_MOVED_FROM(__attribute__((unused))

3782

test_fixture *fixture,

3783

__attribute__((unused))

3784

gconstpointer

3785

user_data){

3786

__attribute__((cleanup(cleanup_close)))

3787

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3788

g_assert_cmpint(epoll_fd, >=, 0);

3789

__attribute__((cleanup(cleanup_queue)))

3790

task_queue *queue = create_queue();

3791

g_assert_nonnull(queue);

3792

__attribute__((cleanup(string_set_clear)))

3793

string_set cancelled_filenames = {};

3794

const mono_microsecs current_time = 0;

3795

3796

bool quit_now = false;

3797

buffer password = {};

3798

bool mandos_client_exited = false;

3799

bool password_is_read = false;

3800

3801

__attribute__((cleanup(cleanup_string)))

3802

char *tempdir = make_temporary_directory();

3803

g_assert_nonnull(tempdir);

3804

3805

__attribute__((cleanup(cleanup_string)))

3806

char *tempfilename = make_temporary_file_in_directory(tempdir);

3807

g_assert_nonnull(tempfilename);

3808

3809

__attribute__((cleanup(cleanup_string)))

3810

char *targetdir = make_temporary_directory();

3811

g_assert_nonnull(targetdir);

3812

3813

__attribute__((cleanup(cleanup_string)))

3814

char *targetfilename = NULL;

3815

g_assert_cmpint(asprintf(&targetfilename, "%s/%s", targetdir,

3816

basename(tempfilename)), >, 0);

3817

g_assert_nonnull(targetfilename);

3818

3819

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3820

&password, tempdir,

3821

&cancelled_filenames,

3822

&current_time,

3823

&mandos_client_exited,

3824

&password_is_read));

3825

3826

g_assert_cmpint(rename(tempfilename, targetfilename), ==, 0);

3827

3828

const task_context *const added_read_task

3829

= find_matching_task(queue,

3830

(task_context){ .func=read_inotify_event });

3831

g_assert_nonnull(added_read_task);

3832

3833

/* "sufficient to read at least one event." - inotify(7) */

3834

const size_t ievent_size = (sizeof(struct inotify_event)

3835

+ NAME_MAX + 1);

3836

struct inotify_event *ievent = malloc(ievent_size);

3837

g_assert_nonnull(ievent);

3838

3839

ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);

3840

3841

g_assert_cmpint((int)read_size, >, 0);

3842

g_assert_true(ievent->mask & IN_MOVED_FROM);

3843

g_assert_cmpstr(ievent->name, ==, basename(tempfilename));

3844

3845

free(ievent);

3846

3847

g_assert_cmpint(unlink(targetfilename), ==, 0);

3848

g_assert_cmpint(rmdir(targetdir), ==, 0);

3849

g_assert_cmpint(rmdir(tempdir), ==, 0);

3850

}

3851

3852

static

3853

void test_add_inotify_dir_watch_IN_DELETE(__attribute__((unused))

3854

test_fixture *fixture,

3855

__attribute__((unused))

3856

gconstpointer user_data){

3857

__attribute__((cleanup(cleanup_close)))

3858

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3859

g_assert_cmpint(epoll_fd, >=, 0);

3860

__attribute__((cleanup(cleanup_queue)))

3861

task_queue *queue = create_queue();

3862

g_assert_nonnull(queue);

3863

__attribute__((cleanup(string_set_clear)))

3864

string_set cancelled_filenames = {};

3865

const mono_microsecs current_time = 0;

3866

3867

bool quit_now = false;

3868

buffer password = {};

3869

bool mandos_client_exited = false;

3870

bool password_is_read = false;

3871

3872

__attribute__((cleanup(cleanup_string)))

3873

char *tempdir = make_temporary_directory();

3874

g_assert_nonnull(tempdir);

3875

3876

__attribute__((cleanup(cleanup_string)))

3877

char *tempfile = make_temporary_file_in_directory(tempdir);

3878

g_assert_nonnull(tempfile);

3879

3880

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3881

&password, tempdir,

3882

&cancelled_filenames,

3883

&current_time,

3884

&mandos_client_exited,

3885

&password_is_read));

3886

g_assert_cmpint(unlink(tempfile), ==, 0);

3887

3888

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3889

3890

const task_context *const added_read_task

3891

= find_matching_task(queue,

3892

(task_context){ .func=read_inotify_event });

3893

g_assert_nonnull(added_read_task);

3894

3895

g_assert_cmpint(added_read_task->fd, >, 2);

3896

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3897

3898

/* "sufficient to read at least one event." - inotify(7) */

3899

const size_t ievent_size = (sizeof(struct inotify_event)

3900

+ NAME_MAX + 1);

3901

struct inotify_event *ievent = malloc(ievent_size);

3902

g_assert_nonnull(ievent);

3903

3904

ssize_t read_size = 0;

3905

read_size = read(added_read_task->fd, ievent, ievent_size);

3906

3907

g_assert_cmpint((int)read_size, >, 0);

3908

g_assert_true(ievent->mask & IN_DELETE);

3909

g_assert_cmpstr(ievent->name, ==, basename(tempfile));

3910

3911

free(ievent);

3912

3913

g_assert_cmpint(rmdir(tempdir), ==, 0);

3914

}

3915

3916

static

3917

void test_add_inotify_dir_watch_IN_EXCL_UNLINK(__attribute__((unused))

3918

test_fixture *fixture,

3919

__attribute__((unused))

3920

gconstpointer

3921

user_data){

3922

__attribute__((cleanup(cleanup_close)))

3923

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3924

g_assert_cmpint(epoll_fd, >=, 0);

3925

__attribute__((cleanup(cleanup_queue)))

3926

task_queue *queue = create_queue();

3927

g_assert_nonnull(queue);

3928

__attribute__((cleanup(string_set_clear)))

3929

string_set cancelled_filenames = {};

3930

const mono_microsecs current_time = 0;

3931

3932

bool quit_now = false;

3933

buffer password = {};

3934

bool mandos_client_exited = false;

3935

bool password_is_read = false;

3936

3937

__attribute__((cleanup(cleanup_string)))

3938

char *tempdir = make_temporary_directory();

3939

g_assert_nonnull(tempdir);

3940

3941

__attribute__((cleanup(cleanup_string)))

3942

char *tempfile = make_temporary_file_in_directory(tempdir);

3943

g_assert_nonnull(tempfile);

3944

int tempfile_fd = open(tempfile, O_WRONLY | O_CLOEXEC | O_NOCTTY

3945

| O_NOFOLLOW);

3946

g_assert_cmpint(tempfile_fd, >, 2);

3947

3948

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3949

&password, tempdir,

3950

&cancelled_filenames,

3951

&current_time,

3952

&mandos_client_exited,

3953

&password_is_read));

3954

g_assert_cmpint(unlink(tempfile), ==, 0);

3955

3956

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3957

3958

const task_context *const added_read_task

3959

= find_matching_task(queue,

3960

(task_context){ .func=read_inotify_event });

3961

g_assert_nonnull(added_read_task);

3962

3963

g_assert_cmpint(added_read_task->fd, >, 2);

3964

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3965

3966

/* "sufficient to read at least one event." - inotify(7) */

3967

const size_t ievent_size = (sizeof(struct inotify_event)

3968

+ NAME_MAX + 1);

3969

struct inotify_event *ievent = malloc(ievent_size);

3970

g_assert_nonnull(ievent);

3971

3972

ssize_t read_size = 0;

3973

read_size = read(added_read_task->fd, ievent, ievent_size);

3974

3975

g_assert_cmpint((int)read_size, >, 0);

3976

g_assert_true(ievent->mask & IN_DELETE);

3977

g_assert_cmpstr(ievent->name, ==, basename(tempfile));

3978

3979

g_assert_cmpint(close(tempfile_fd), ==, 0);

3980

3981

/* IN_EXCL_UNLINK should make the closing of the previously unlinked

3982

file not appear as an ievent, so we should not see it now. */

3983

read_size = read(added_read_task->fd, ievent, ievent_size);

3984

g_assert_cmpint((int)read_size, ==, -1);

3985

g_assert_true(errno == EAGAIN);

3986

3987

free(ievent);

3988

3989

g_assert_cmpint(rmdir(tempdir), ==, 0);

3990

}

3991

3992

static void test_read_inotify_event_readerror(__attribute__((unused))

3993

test_fixture *fixture,

3994

__attribute__((unused))

3995

gconstpointer

3996

user_data){

3997

__attribute__((cleanup(cleanup_close)))

3998

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3999

g_assert_cmpint(epoll_fd, >=, 0);

4000

const mono_microsecs current_time = 0;

4001

4002

/* Reading /proc/self/mem from offset 0 will always result in EIO */

4003

const int fd = open("/proc/self/mem",

4004

O_RDONLY | O_CLOEXEC | O_NOCTTY);

4005

4006

bool quit_now = false;

4007

__attribute__((cleanup(cleanup_queue)))

4008

task_queue *queue = create_queue();

4009

g_assert_nonnull(queue);

4010

4011

task_context task = {

4012

.func=read_inotify_event,

4013

.epoll_fd=epoll_fd,

4014

.fd=fd,

4015

.quit_now=&quit_now,

4016

.filename=strdup("/nonexistent"),

4017

.cancelled_filenames = &(string_set){},

4018

.notafter=0,

4019

.current_time=&current_time,

4020

};

4021

g_assert_nonnull(task.filename);

4022

run_task_with_stderr_to_dev_null(task, queue);

4023

g_assert_true(quit_now);

4024

g_assert_true(queue->next_run == 0);

4025

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4026

4027

g_assert_true(epoll_set_does_not_contain(epoll_fd, fd));

4028

4029

g_assert_cmpint(close(fd), ==, -1);

4030

}

4031

4032

static void test_read_inotify_event_bad_epoll(__attribute__((unused))

4033

test_fixture *fixture,

4034

__attribute__((unused))

4035

gconstpointer

4036

user_data){

4037

const mono_microsecs current_time = 17;

4038

4039

int pipefds[2];

4040

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4041

const int epoll_fd = pipefds[0]; /* This will obviously fail */

4042

4043

bool quit_now = false;

4044

buffer password = {};

4045

bool mandos_client_exited = false;

4046

bool password_is_read = false;

4047

__attribute__((cleanup(cleanup_queue)))

4048

task_queue *queue = create_queue();

4049

g_assert_nonnull(queue);

4050

4051

task_context task = {

4052

.func=read_inotify_event,

4053

.epoll_fd=epoll_fd,

4054

.fd=pipefds[0],

4055

.quit_now=&quit_now,

4056

.password=&password,

4057

.filename=strdup("/nonexistent"),

4058

.cancelled_filenames = &(string_set){},

4059

.notafter=0,

4060

.current_time=&current_time,

4061

.mandos_client_exited=&mandos_client_exited,

4062

.password_is_read=&password_is_read,

4063

};

4064

g_assert_nonnull(task.filename);

4065

run_task_with_stderr_to_dev_null(task, queue);

4066

4067

g_assert_nonnull(find_matching_task(queue, task));

4068

g_assert_true(queue->next_run == 1000000 + current_time);

4069

4070

g_assert_cmpint(close(pipefds[0]), ==, 0);

4071

g_assert_cmpint(close(pipefds[1]), ==, 0);

4072

}

4073

4074

static void test_read_inotify_event_nodata(__attribute__((unused))

4075

test_fixture *fixture,

4076

__attribute__((unused))

4077

gconstpointer user_data){

4078

__attribute__((cleanup(cleanup_close)))

4079

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4080

g_assert_cmpint(epoll_fd, >=, 0);

4081

const mono_microsecs current_time = 0;

4082

4083

int pipefds[2];

4084

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4085

4086

bool quit_now = false;

4087

buffer password = {};

4088

bool mandos_client_exited = false;

4089

bool password_is_read = false;

4090

__attribute__((cleanup(cleanup_queue)))

4091

task_queue *queue = create_queue();

4092

g_assert_nonnull(queue);

4093

4094

task_context task = {

4095

.func=read_inotify_event,

4096

.epoll_fd=epoll_fd,

4097

.fd=pipefds[0],

4098

.quit_now=&quit_now,

4099

.password=&password,

4100

.filename=strdup("/nonexistent"),

4101

.cancelled_filenames = &(string_set){},

4102

.notafter=0,

4103

.current_time=&current_time,

4104

.mandos_client_exited=&mandos_client_exited,

4105

.password_is_read=&password_is_read,

4106

};

4107

g_assert_nonnull(task.filename);

4108

task.func(task, queue);

4109

g_assert_false(quit_now);

4110

g_assert_true(queue->next_run == 0);

4111

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4112

4113

g_assert_nonnull(find_matching_task(queue, (task_context){

4114

.func=read_inotify_event,

4115

.epoll_fd=epoll_fd,

4116

.fd=pipefds[0],

4117

.quit_now=&quit_now,

4118

.password=&password,

4119

.filename=task.filename,

4120

.cancelled_filenames=task.cancelled_filenames,

4121

.current_time=&current_time,

4122

.mandos_client_exited=&mandos_client_exited,

4123

.password_is_read=&password_is_read,

4124

}));

4125

4126

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4127

EPOLLIN | EPOLLRDHUP));

4128

4129

g_assert_cmpint(close(pipefds[1]), ==, 0);

4130

}

4131

4132

static void test_read_inotify_event_eof(__attribute__((unused))

4133

test_fixture *fixture,

4134

__attribute__((unused))

4135

gconstpointer user_data){

4136

__attribute__((cleanup(cleanup_close)))

4137

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4138

g_assert_cmpint(epoll_fd, >=, 0);

4139

const mono_microsecs current_time = 0;

4140

4141

int pipefds[2];

4142

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4143

g_assert_cmpint(close(pipefds[1]), ==, 0);

4144

4145

bool quit_now = false;

4146

buffer password = {};

4147

__attribute__((cleanup(cleanup_queue)))

4148

task_queue *queue = create_queue();

4149

g_assert_nonnull(queue);

4150

4151

task_context task = {

4152

.func=read_inotify_event,

4153

.epoll_fd=epoll_fd,

4154

.fd=pipefds[0],

4155

.quit_now=&quit_now,

4156

.password=&password,

4157

.filename=strdup("/nonexistent"),

4158

.cancelled_filenames = &(string_set){},

4159

.notafter=0,

4160

.current_time=&current_time,

4161

};

4162

run_task_with_stderr_to_dev_null(task, queue);

4163

g_assert_true(quit_now);

4164

g_assert_true(queue->next_run == 0);

4165

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4166

4167

g_assert_true(epoll_set_does_not_contain(epoll_fd, pipefds[0]));

4168

4169

g_assert_cmpint(close(pipefds[0]), ==, -1);

4170

}

4171

4172

static

4173

void test_read_inotify_event_IN_CLOSE_WRITE(__attribute__((unused))

4174

test_fixture *fixture,

4175

__attribute__((unused))

4176

gconstpointer user_data){

4177

__attribute__((cleanup(cleanup_close)))

4178

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4179

g_assert_cmpint(epoll_fd, >=, 0);

4180

const mono_microsecs current_time = 0;

4181

4182

int pipefds[2];

4183

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4184

4185

/* "sufficient to read at least one event." - inotify(7) */

4186

const size_t ievent_max_size = (sizeof(struct inotify_event)

4187

+ NAME_MAX + 1);

4188

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4189

struct {

4190

struct inotify_event event;

4191

char name_buffer[NAME_MAX + 1];

4192

} ievent_buffer;

4193

struct inotify_event *const ievent = &ievent_buffer.event;

4194

4195

const char dummy_file_name[] = "ask.dummy_file_name";

4196

ievent->mask = IN_CLOSE_WRITE;

4197

ievent->len = sizeof(dummy_file_name);

4198

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4199

const size_t ievent_size = (sizeof(struct inotify_event)

4200

+ sizeof(dummy_file_name));

4201

#if defined(__GNUC__) and __GNUC__ >= 11

4202

#pragma GCC diagnostic push

4203

/* ievent is pointing into a struct which is of sufficient size */

4204

#pragma GCC diagnostic ignored "-Wstringop-overread"

4205

#endif

4206

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4207

==, ievent_size);

4208

#if defined(__GNUC__) and __GNUC__ >= 11

4209

#pragma GCC diagnostic pop

4210

#endif

4211

g_assert_cmpint(close(pipefds[1]), ==, 0);

4212

4213

bool quit_now = false;

4214

buffer password = {};

4215

bool mandos_client_exited = false;

4216

bool password_is_read = false;

4217

__attribute__((cleanup(cleanup_queue)))

4218

task_queue *queue = create_queue();

4219

g_assert_nonnull(queue);

4220

4221

task_context task = {

4222

.func=read_inotify_event,

4223

.epoll_fd=epoll_fd,

4224

.fd=pipefds[0],

4225

.quit_now=&quit_now,

4226

.password=&password,

4227

.filename=strdup("/nonexistent"),

4228

.cancelled_filenames = &(string_set){},

4229

.notafter=0,

4230

.current_time=&current_time,

4231

.mandos_client_exited=&mandos_client_exited,

4232

.password_is_read=&password_is_read,

4233

};

4234

task.func(task, queue);

4235

g_assert_false(quit_now);

4236

g_assert_true(queue->next_run != 0);

4237

g_assert_cmpuint((unsigned int)queue->length, >=, 1);

4238

4239

g_assert_nonnull(find_matching_task(queue, (task_context){

4240

.func=read_inotify_event,

4241

.epoll_fd=epoll_fd,

4242

.fd=pipefds[0],

4243

.quit_now=&quit_now,

4244

.password=&password,

4245

.filename=task.filename,

4246

.cancelled_filenames=task.cancelled_filenames,

4247

.current_time=&current_time,

4248

.mandos_client_exited=&mandos_client_exited,

4249

.password_is_read=&password_is_read,

4250

}));

4251

4252

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4253

EPOLLIN | EPOLLRDHUP));

4254

4255

g_assert_cmpuint((unsigned int)queue->length, >=, 2);

4256

4257

__attribute__((cleanup(cleanup_string)))

4258

char *filename = NULL;

4259

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4260

dummy_file_name), >, 0);

4261

g_assert_nonnull(filename);

4262

g_assert_nonnull(find_matching_task(queue, (task_context){

4263

.func=open_and_parse_question,

4264

.epoll_fd=epoll_fd,

4265

.filename=filename,

4266

.question_filename=filename,

4267

.password=&password,

4268

.cancelled_filenames=task.cancelled_filenames,

4269

.current_time=&current_time,

4270

.mandos_client_exited=&mandos_client_exited,

4271

.password_is_read=&password_is_read,

4272

}));

4273

}

4274

4275

static

4276

void test_read_inotify_event_IN_MOVED_TO(__attribute__((unused))

4277

test_fixture *fixture,

4278

__attribute__((unused))

4279

gconstpointer user_data){

4280

__attribute__((cleanup(cleanup_close)))

4281

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4282

g_assert_cmpint(epoll_fd, >=, 0);

4283

const mono_microsecs current_time = 0;

4284

4285

int pipefds[2];

4286

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4287

4288

/* "sufficient to read at least one event." - inotify(7) */

4289

const size_t ievent_max_size = (sizeof(struct inotify_event)

4290

+ NAME_MAX + 1);

4291

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4292

struct {

4293

struct inotify_event event;

4294

char name_buffer[NAME_MAX + 1];

4295

} ievent_buffer;

4296

struct inotify_event *const ievent = &ievent_buffer.event;

4297

4298

const char dummy_file_name[] = "ask.dummy_file_name";

4299

ievent->mask = IN_MOVED_TO;

4300

ievent->len = sizeof(dummy_file_name);

4301

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4302

const size_t ievent_size = (sizeof(struct inotify_event)

4303

+ sizeof(dummy_file_name));

4304

#if defined(__GNUC__) and __GNUC__ >= 11

4305

#pragma GCC diagnostic push

4306

/* ievent is pointing into a struct which is of sufficient size */

4307

#pragma GCC diagnostic ignored "-Wstringop-overread"

4308

#endif

4309

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4310

==, ievent_size);

4311

#if defined(__GNUC__) and __GNUC__ >= 11

4312

#pragma GCC diagnostic pop

4313

#endif

4314

g_assert_cmpint(close(pipefds[1]), ==, 0);

4315

4316

bool quit_now = false;

4317

buffer password = {};

4318

bool mandos_client_exited = false;

4319

bool password_is_read = false;

4320

__attribute__((cleanup(cleanup_queue)))

4321

task_queue *queue = create_queue();

4322

g_assert_nonnull(queue);

4323

4324

task_context task = {

4325

.func=read_inotify_event,

4326

.epoll_fd=epoll_fd,

4327

.fd=pipefds[0],

4328

.quit_now=&quit_now,

4329

.password=&password,

4330

.filename=strdup("/nonexistent"),

4331

.cancelled_filenames = &(string_set){},

4332

.notafter=0,

4333

.current_time=&current_time,

4334

.mandos_client_exited=&mandos_client_exited,

4335

.password_is_read=&password_is_read,

4336

};

4337

task.func(task, queue);

4338

g_assert_false(quit_now);

4339

g_assert_true(queue->next_run != 0);

4340

g_assert_cmpuint((unsigned int)queue->length, >=, 1);

4341

4342

g_assert_nonnull(find_matching_task(queue, (task_context){

4343

.func=read_inotify_event,

4344

.epoll_fd=epoll_fd,

4345

.fd=pipefds[0],

4346

.quit_now=&quit_now,

4347

.password=&password,

4348

.filename=task.filename,

4349

.cancelled_filenames=task.cancelled_filenames,

4350

.current_time=&current_time,

4351

.mandos_client_exited=&mandos_client_exited,

4352

.password_is_read=&password_is_read,

4353

}));

4354

4355

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4356

EPOLLIN | EPOLLRDHUP));

4357

4358

g_assert_cmpuint((unsigned int)queue->length, >=, 2);

4359

4360

__attribute__((cleanup(cleanup_string)))

4361

char *filename = NULL;

4362

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4363

dummy_file_name), >, 0);

4364

g_assert_nonnull(filename);

4365

g_assert_nonnull(find_matching_task(queue, (task_context){

4366

.func=open_and_parse_question,

4367

.epoll_fd=epoll_fd,

4368

.filename=filename,

4369

.question_filename=filename,

4370

.password=&password,

4371

.cancelled_filenames=task.cancelled_filenames,

4372

.current_time=&current_time,

4373

.mandos_client_exited=&mandos_client_exited,

4374

.password_is_read=&password_is_read,

4375

}));

4376

}

4377

4378

static

4379

void test_read_inotify_event_IN_MOVED_FROM(__attribute__((unused))

4380

test_fixture *fixture,

4381

__attribute__((unused))

4382

gconstpointer user_data){

4383

__attribute__((cleanup(cleanup_close)))

4384

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4385

g_assert_cmpint(epoll_fd, >=, 0);

4386

__attribute__((cleanup(string_set_clear)))

4387

string_set cancelled_filenames = {};

4388

const mono_microsecs current_time = 0;

4389

4390

int pipefds[2];

4391

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4392

4393

/* "sufficient to read at least one event." - inotify(7) */

4394

const size_t ievent_max_size = (sizeof(struct inotify_event)

4395

+ NAME_MAX + 1);

4396

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4397

struct {

4398

struct inotify_event event;

4399

char name_buffer[NAME_MAX + 1];

4400

} ievent_buffer;

4401

struct inotify_event *const ievent = &ievent_buffer.event;

4402

4403

const char dummy_file_name[] = "ask.dummy_file_name";

4404

ievent->mask = IN_MOVED_FROM;

4405

ievent->len = sizeof(dummy_file_name);

4406

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4407

const size_t ievent_size = (sizeof(struct inotify_event)

4408

+ sizeof(dummy_file_name));

4409

#if defined(__GNUC__) and __GNUC__ >= 11

4410

#pragma GCC diagnostic push

4411

/* ievent is pointing into a struct which is of sufficient size */

4412

#pragma GCC diagnostic ignored "-Wstringop-overread"

4413

#endif

4414

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4415

==, ievent_size);

4416

#if defined(__GNUC__) and __GNUC__ >= 11

4417

#pragma GCC diagnostic pop

4418

#endif

4419

g_assert_cmpint(close(pipefds[1]), ==, 0);

4420

4421

bool quit_now = false;

4422

buffer password = {};

4423

bool mandos_client_exited = false;

4424

bool password_is_read = false;

4425

__attribute__((cleanup(cleanup_queue)))

4426

task_queue *queue = create_queue();

4427

g_assert_nonnull(queue);

4428

4429

task_context task = {

4430

.func=read_inotify_event,

4431

.epoll_fd=epoll_fd,

4432

.fd=pipefds[0],

4433

.quit_now=&quit_now,

4434

.password=&password,

4435

.filename=strdup("/nonexistent"),

4436

.cancelled_filenames=&cancelled_filenames,

4437

.current_time=&current_time,

4438

.mandos_client_exited=&mandos_client_exited,

4439

.password_is_read=&password_is_read,

4440

};

4441

task.func(task, queue);

4442

g_assert_false(quit_now);

4443

g_assert_true(queue->next_run == 0);

4444

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4445

4446

g_assert_nonnull(find_matching_task(queue, (task_context){

4447

.func=read_inotify_event,

4448

.epoll_fd=epoll_fd,

4449

.fd=pipefds[0],

4450

.quit_now=&quit_now,

4451

.password=&password,

4452

.filename=task.filename,

4453

.cancelled_filenames=&cancelled_filenames,

4454

.current_time=&current_time,

4455

.mandos_client_exited=&mandos_client_exited,

4456

.password_is_read=&password_is_read,

4457

}));

4458

4459

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4460

EPOLLIN | EPOLLRDHUP));

4461

4462

__attribute__((cleanup(cleanup_string)))

4463

char *filename = NULL;

4464

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4465

dummy_file_name), >, 0);

4466

g_assert_nonnull(filename);

4467

g_assert_true(string_set_contains(*task.cancelled_filenames,

4468

filename));

4469

}

4470

4471

static void test_read_inotify_event_IN_DELETE(__attribute__((unused))

4472

test_fixture *fixture,

4473

__attribute__((unused))

4474

gconstpointer

4475

user_data){

4476

__attribute__((cleanup(cleanup_close)))

4477

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4478

g_assert_cmpint(epoll_fd, >=, 0);

4479

__attribute__((cleanup(string_set_clear)))

4480

string_set cancelled_filenames = {};

4481

const mono_microsecs current_time = 0;

4482

4483

int pipefds[2];

4484

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4485

4486

/* "sufficient to read at least one event." - inotify(7) */

4487

const size_t ievent_max_size = (sizeof(struct inotify_event)

4488

+ NAME_MAX + 1);

4489

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4490

struct {

4491

struct inotify_event event;

4492

char name_buffer[NAME_MAX + 1];

4493

} ievent_buffer;

4494

struct inotify_event *const ievent = &ievent_buffer.event;

4495

4496

const char dummy_file_name[] = "ask.dummy_file_name";

4497

ievent->mask = IN_DELETE;

4498

ievent->len = sizeof(dummy_file_name);

4499

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4500

const size_t ievent_size = (sizeof(struct inotify_event)

4501

+ sizeof(dummy_file_name));

4502

#if defined(__GNUC__) and __GNUC__ >= 11

4503

#pragma GCC diagnostic push

4504

/* ievent is pointing into a struct which is of sufficient size */

4505

#pragma GCC diagnostic ignored "-Wstringop-overread"

4506

#endif

4507

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4508

==, ievent_size);

4509

#if defined(__GNUC__) and __GNUC__ >= 11

4510

#pragma GCC diagnostic pop

4511

#endif

4512

g_assert_cmpint(close(pipefds[1]), ==, 0);

4513

4514

bool quit_now = false;

4515

buffer password = {};

4516

bool mandos_client_exited = false;

4517

bool password_is_read = false;

4518

__attribute__((cleanup(cleanup_queue)))

4519

task_queue *queue = create_queue();

4520

g_assert_nonnull(queue);

4521

4522

task_context task = {

4523

.func=read_inotify_event,

4524

.epoll_fd=epoll_fd,

4525

.fd=pipefds[0],

4526

.quit_now=&quit_now,

4527

.password=&password,

4528

.filename=strdup("/nonexistent"),

4529

.cancelled_filenames=&cancelled_filenames,

4530

.current_time=&current_time,

4531

.mandos_client_exited=&mandos_client_exited,

4532

.password_is_read=&password_is_read,

4533

};

4534

task.func(task, queue);

4535

g_assert_false(quit_now);

4536

g_assert_true(queue->next_run == 0);

4537

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4538

4539

g_assert_nonnull(find_matching_task(queue, (task_context){

4540

.func=read_inotify_event,

4541

.epoll_fd=epoll_fd,

4542

.fd=pipefds[0],

4543

.quit_now=&quit_now,

4544

.password=&password,

4545

.filename=task.filename,

4546

.cancelled_filenames=&cancelled_filenames,

4547

.current_time=&current_time,

4548

.mandos_client_exited=&mandos_client_exited,

4549

.password_is_read=&password_is_read,

4550

}));

4551

4552

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4553

EPOLLIN | EPOLLRDHUP));

4554

4555

__attribute__((cleanup(cleanup_string)))

4556

char *filename = NULL;

4557

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4558

dummy_file_name), >, 0);

4559

g_assert_nonnull(filename);

4560

g_assert_true(string_set_contains(*task.cancelled_filenames,

4561

filename));

4562

}

4563

4564

static void

4565

test_read_inotify_event_IN_CLOSE_WRITE_badname(__attribute__((unused))

4566

test_fixture *fixture,

4567

__attribute__((unused))

4568

gconstpointer

4569

user_data){

4570

__attribute__((cleanup(cleanup_close)))

4571

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4572

g_assert_cmpint(epoll_fd, >=, 0);

4573

const mono_microsecs current_time = 0;

4574

4575

int pipefds[2];

4576

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4577

4578

/* "sufficient to read at least one event." - inotify(7) */

4579

const size_t ievent_max_size = (sizeof(struct inotify_event)

4580

+ NAME_MAX + 1);

4581

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4582

struct {

4583

struct inotify_event event;

4584

char name_buffer[NAME_MAX + 1];

4585

} ievent_buffer;

4586

struct inotify_event *const ievent = &ievent_buffer.event;

4587

4588

const char dummy_file_name[] = "ignored.dummy_file_name";

4589

ievent->mask = IN_CLOSE_WRITE;

4590

ievent->len = sizeof(dummy_file_name);

4591

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4592

const size_t ievent_size = (sizeof(struct inotify_event)

4593

+ sizeof(dummy_file_name));

4594

#if defined(__GNUC__) and __GNUC__ >= 11

4595

#pragma GCC diagnostic push

4596

/* ievent is pointing into a struct which is of sufficient size */

4597

#pragma GCC diagnostic ignored "-Wstringop-overread"

4598

#endif

4599

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4600

==, ievent_size);

4601

#if defined(__GNUC__) and __GNUC__ >= 11

4602

#pragma GCC diagnostic pop

4603

#endif

4604

g_assert_cmpint(close(pipefds[1]), ==, 0);

4605

4606

bool quit_now = false;

4607

buffer password = {};

4608

bool mandos_client_exited = false;

4609

bool password_is_read = false;

4610

__attribute__((cleanup(cleanup_queue)))

4611

task_queue *queue = create_queue();

4612

g_assert_nonnull(queue);

4613

4614

task_context task = {

4615

.func=read_inotify_event,

4616

.epoll_fd=epoll_fd,

4617

.fd=pipefds[0],

4618

.quit_now=&quit_now,

4619

.password=&password,

4620

.filename=strdup("/nonexistent"),

4621

.cancelled_filenames = &(string_set){},

4622

.notafter=0,

4623

.current_time=&current_time,

4624

.mandos_client_exited=&mandos_client_exited,

4625

.password_is_read=&password_is_read,

4626

};

4627

task.func(task, queue);

4628

g_assert_false(quit_now);

4629

g_assert_true(queue->next_run == 0);

4630

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4631

4632

g_assert_nonnull(find_matching_task(queue, (task_context){

4633

.func=read_inotify_event,

4634

.epoll_fd=epoll_fd,

4635

.fd=pipefds[0],

4636

.quit_now=&quit_now,

4637

.password=&password,

4638

.filename=task.filename,

4639

.cancelled_filenames=task.cancelled_filenames,

4640

.current_time=&current_time,

4641

.mandos_client_exited=&mandos_client_exited,

4642

.password_is_read=&password_is_read,

4643

}));

4644

4645

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4646

EPOLLIN | EPOLLRDHUP));

4647

}

4648

4649

static void

4650

test_read_inotify_event_IN_MOVED_TO_badname(__attribute__((unused))

4651

test_fixture *fixture,

4652

__attribute__((unused))

4653

gconstpointer user_data){

4654

__attribute__((cleanup(cleanup_close)))

4655

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4656

g_assert_cmpint(epoll_fd, >=, 0);

4657

const mono_microsecs current_time = 0;

4658

4659

int pipefds[2];

4660

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4661

4662

/* "sufficient to read at least one event." - inotify(7) */

4663

const size_t ievent_max_size = (sizeof(struct inotify_event)

4664

+ NAME_MAX + 1);

4665

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4666

struct {

4667

struct inotify_event event;

4668

char name_buffer[NAME_MAX + 1];

4669

} ievent_buffer;

4670

struct inotify_event *const ievent = &ievent_buffer.event;

4671

4672

const char dummy_file_name[] = "ignored.dummy_file_name";

4673

ievent->mask = IN_MOVED_TO;

4674

ievent->len = sizeof(dummy_file_name);

4675

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4676

const size_t ievent_size = (sizeof(struct inotify_event)

4677

+ sizeof(dummy_file_name));

4678

#if defined(__GNUC__) and __GNUC__ >= 11

4679

#pragma GCC diagnostic push

4680

/* ievent is pointing into a struct which is of sufficient size */

4681

#pragma GCC diagnostic ignored "-Wstringop-overread"

4682

#endif

4683

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4684

==, ievent_size);

4685

#if defined(__GNUC__) and __GNUC__ >= 11

4686

#pragma GCC diagnostic pop

4687

#endif

4688

g_assert_cmpint(close(pipefds[1]), ==, 0);

4689

4690

bool quit_now = false;

4691

buffer password = {};

4692

bool mandos_client_exited = false;

4693

bool password_is_read = false;

4694

__attribute__((cleanup(cleanup_queue)))

4695

task_queue *queue = create_queue();

4696

g_assert_nonnull(queue);

4697

4698

task_context task = {

4699

.func=read_inotify_event,

4700

.epoll_fd=epoll_fd,

4701

.fd=pipefds[0],

4702

.quit_now=&quit_now,

4703

.password=&password,

4704

.filename=strdup("/nonexistent"),

4705

.cancelled_filenames = &(string_set){},

4706

.notafter=0,

4707

.current_time=&current_time,

4708

.mandos_client_exited=&mandos_client_exited,

4709

.password_is_read=&password_is_read,

4710

};

4711

task.func(task, queue);

4712

g_assert_false(quit_now);

4713

g_assert_true(queue->next_run == 0);

4714

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4715

4716

g_assert_nonnull(find_matching_task(queue, (task_context){

4717

.func=read_inotify_event,

4718

.epoll_fd=epoll_fd,

4719

.fd=pipefds[0],

4720

.quit_now=&quit_now,

4721

.password=&password,

4722

.filename=task.filename,

4723

.cancelled_filenames=task.cancelled_filenames,

4724

.current_time=&current_time,

4725

.mandos_client_exited=&mandos_client_exited,

4726

.password_is_read=&password_is_read,

4727

}));

4728

4729

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4730

EPOLLIN | EPOLLRDHUP));

4731

}

4732

4733

static void

4734

test_read_inotify_event_IN_MOVED_FROM_badname(__attribute__((unused))

4735

test_fixture *fixture,

4736

__attribute__((unused))

4737

gconstpointer

4738

user_data){

4739

__attribute__((cleanup(cleanup_close)))

4740

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4741

g_assert_cmpint(epoll_fd, >=, 0);

4742

__attribute__((cleanup(string_set_clear)))

4743

string_set cancelled_filenames = {};

4744

const mono_microsecs current_time = 0;

4745

4746

int pipefds[2];

4747

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4748

4749

/* "sufficient to read at least one event." - inotify(7) */

4750

const size_t ievent_max_size = (sizeof(struct inotify_event)

4751

+ NAME_MAX + 1);

4752

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4753

struct {

4754

struct inotify_event event;

4755

char name_buffer[NAME_MAX + 1];

4756

} ievent_buffer;

4757

struct inotify_event *const ievent = &ievent_buffer.event;

4758

4759

const char dummy_file_name[] = "ignored.dummy_file_name";

4760

ievent->mask = IN_MOVED_FROM;

4761

ievent->len = sizeof(dummy_file_name);

4762

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4763

const size_t ievent_size = (sizeof(struct inotify_event)

4764

+ sizeof(dummy_file_name));

4765

#if defined(__GNUC__) and __GNUC__ >= 11

4766

#pragma GCC diagnostic push

4767

/* ievent is pointing into a struct which is of sufficient size */

4768

#pragma GCC diagnostic ignored "-Wstringop-overread"

4769

#endif

4770

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4771

==, ievent_size);

4772

#if defined(__GNUC__) and __GNUC__ >= 11

4773

#pragma GCC diagnostic pop

4774

#endif

4775

g_assert_cmpint(close(pipefds[1]), ==, 0);

4776

4777

bool quit_now = false;

4778

buffer password = {};

4779

bool mandos_client_exited = false;

4780

bool password_is_read = false;

4781

__attribute__((cleanup(cleanup_queue)))

4782

task_queue *queue = create_queue();

4783

g_assert_nonnull(queue);

4784

4785

task_context task = {

4786

.func=read_inotify_event,

4787

.epoll_fd=epoll_fd,

4788

.fd=pipefds[0],

4789

.quit_now=&quit_now,

4790

.password=&password,

4791

.filename=strdup("/nonexistent"),

4792

.cancelled_filenames=&cancelled_filenames,

4793

.current_time=&current_time,

4794

.mandos_client_exited=&mandos_client_exited,

4795

.password_is_read=&password_is_read,

4796

};

4797

task.func(task, queue);

4798

g_assert_false(quit_now);

4799

g_assert_true(queue->next_run == 0);

4800

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4801

4802

g_assert_nonnull(find_matching_task(queue, (task_context){

4803

.func=read_inotify_event,

4804

.epoll_fd=epoll_fd,

4805

.fd=pipefds[0],

4806

.quit_now=&quit_now,

4807

.password=&password,

4808

.filename=task.filename,

4809

.cancelled_filenames=&cancelled_filenames,

4810

.current_time=&current_time,

4811

.mandos_client_exited=&mandos_client_exited,

4812

.password_is_read=&password_is_read,

4813

}));

4814

4815

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4816

EPOLLIN | EPOLLRDHUP));

4817

4818

__attribute__((cleanup(cleanup_string)))

4819

char *filename = NULL;

4820

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4821

dummy_file_name), >, 0);

4822

g_assert_nonnull(filename);

4823

g_assert_false(string_set_contains(cancelled_filenames, filename));

4824

}

4825

4826

static

4827

void test_read_inotify_event_IN_DELETE_badname(__attribute__((unused))

4828

test_fixture *fixture,

4829

__attribute__((unused))

4830

gconstpointer

4831

user_data){

4832

__attribute__((cleanup(cleanup_close)))

4833

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4834

g_assert_cmpint(epoll_fd, >=, 0);

4835

__attribute__((cleanup(string_set_clear)))

4836

string_set cancelled_filenames = {};

4837

const mono_microsecs current_time = 0;

4838

4839

int pipefds[2];

4840

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4841

4842

/* "sufficient to read at least one event." - inotify(7) */

4843

const size_t ievent_max_size = (sizeof(struct inotify_event)

4844

+ NAME_MAX + 1);

4845

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4846

struct {

4847

struct inotify_event event;

4848

char name_buffer[NAME_MAX + 1];

4849

} ievent_buffer;

4850

struct inotify_event *const ievent = &ievent_buffer.event;

4851

4852

const char dummy_file_name[] = "ignored.dummy_file_name";

4853

ievent->mask = IN_DELETE;

4854

ievent->len = sizeof(dummy_file_name);

4855

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4856

const size_t ievent_size = (sizeof(struct inotify_event)

4857

+ sizeof(dummy_file_name));

4858

#if defined(__GNUC__) and __GNUC__ >= 11

4859

#pragma GCC diagnostic push

4860

/* ievent is pointing into a struct which is of sufficient size */

4861

#pragma GCC diagnostic ignored "-Wstringop-overread"

4862

#endif

4863

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4864

==, ievent_size);

4865

#if defined(__GNUC__) and __GNUC__ >= 11

4866

#pragma GCC diagnostic pop

4867

#endif

4868

g_assert_cmpint(close(pipefds[1]), ==, 0);

4869

4870

bool quit_now = false;

4871

buffer password = {};

4872

bool mandos_client_exited = false;

4873

bool password_is_read = false;

4874

__attribute__((cleanup(cleanup_queue)))

4875

task_queue *queue = create_queue();

4876

g_assert_nonnull(queue);

4877

4878

task_context task = {

4879

.func=read_inotify_event,

4880

.epoll_fd=epoll_fd,

4881

.fd=pipefds[0],

4882

.quit_now=&quit_now,

4883

.password=&password,

4884

.filename=strdup("/nonexistent"),

4885

.cancelled_filenames=&cancelled_filenames,

4886

.current_time=&current_time,

4887

.mandos_client_exited=&mandos_client_exited,

4888

.password_is_read=&password_is_read,

4889

};

4890

task.func(task, queue);

4891

g_assert_false(quit_now);

4892

g_assert_true(queue->next_run == 0);

4893

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4894

4895

g_assert_nonnull(find_matching_task(queue, (task_context){

4896

.func=read_inotify_event,

4897

.epoll_fd=epoll_fd,

4898

.fd=pipefds[0],

4899

.quit_now=&quit_now,

4900

.password=&password,

4901

.filename=task.filename,

4902

.cancelled_filenames=&cancelled_filenames,

4903

.current_time=&current_time,

4904

.mandos_client_exited=&mandos_client_exited,

4905

.password_is_read=&password_is_read,

4906

}));

4907

4908

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4909

EPOLLIN | EPOLLRDHUP));

4910

4911

__attribute__((cleanup(cleanup_string)))

4912

char *filename = NULL;

4913

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4914

dummy_file_name), >, 0);

4915

g_assert_nonnull(filename);

4916

g_assert_false(string_set_contains(cancelled_filenames, filename));

4917

}

4918

4919

static

4920

void test_open_and_parse_question_ENOENT(__attribute__((unused))

4921

test_fixture *fixture,

4922

__attribute__((unused))

4923

gconstpointer user_data){

4924

__attribute__((cleanup(cleanup_close)))

4925

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4926

g_assert_cmpint(epoll_fd, >=, 0);

4927

__attribute__((cleanup(string_set_clear)))

4928

string_set cancelled_filenames = {};

4929

bool mandos_client_exited = false;

4930

bool password_is_read = false;

4931

__attribute__((cleanup(cleanup_queue)))

4932

task_queue *queue = create_queue();

4933

g_assert_nonnull(queue);

4934

4935

char *const filename = strdup("/nonexistent");

4936

g_assert_nonnull(filename);

4937

task_context task = {

4938

.func=open_and_parse_question,

4939

.question_filename=filename,

4940

.epoll_fd=epoll_fd,

4941

.password=(buffer[]){{}},

4942

.filename=filename,

4943

.cancelled_filenames=&cancelled_filenames,

4944

.current_time=(mono_microsecs[]){0},

4945

.mandos_client_exited=&mandos_client_exited,

4946

.password_is_read=&password_is_read,

4947

};

4948

task.func(task, queue);

4949

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4950

}

4951

4952

static void test_open_and_parse_question_EIO(__attribute__((unused))

4953

test_fixture *fixture,

4954

__attribute__((unused))

4955

gconstpointer user_data){

4956

__attribute__((cleanup(cleanup_close)))

4957

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4958

g_assert_cmpint(epoll_fd, >=, 0);

4959

__attribute__((cleanup(string_set_clear)))

4960

string_set cancelled_filenames = {};

4961

buffer password = {};

4962

bool mandos_client_exited = false;

4963

bool password_is_read = false;

4964

__attribute__((cleanup(cleanup_queue)))

4965

task_queue *queue = create_queue();

4966

g_assert_nonnull(queue);

4967

const mono_microsecs current_time = 0;

4968

4969

char *filename = strdup("/proc/self/mem");

4970

task_context task = {

4971

.func=open_and_parse_question,

4972

.question_filename=filename,

4973

.epoll_fd=epoll_fd,

4974

.password=&password,

4975

.filename=filename,

4976

.cancelled_filenames=&cancelled_filenames,

4977

.current_time=&current_time,

4978

.mandos_client_exited=&mandos_client_exited,

4979

.password_is_read=&password_is_read,

4980

};

4981

run_task_with_stderr_to_dev_null(task, queue);

4982

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4983

}

4984

4985

static void

4986

test_open_and_parse_question_parse_error(__attribute__((unused))

4987

test_fixture *fixture,

4988

__attribute__((unused))

4989

gconstpointer user_data){

4990

__attribute__((cleanup(cleanup_close)))

4991

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4992

g_assert_cmpint(epoll_fd, >=, 0);

4993

__attribute__((cleanup(string_set_clear)))

4994

string_set cancelled_filenames = {};

4995

__attribute__((cleanup(cleanup_queue)))

4996

task_queue *queue = create_queue();

4997

g_assert_nonnull(queue);

4998

4999

__attribute__((cleanup(cleanup_string)))

5000

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5001

g_assert_nonnull(tempfilename);

5002

int tempfile = mkostemp(tempfilename, O_CLOEXEC);

5003

g_assert_cmpint(tempfile, >, 0);

5004

const char bad_data[] = "this is bad syntax\n";

5005

g_assert_cmpint(write(tempfile, bad_data, sizeof(bad_data)),

5006

==, sizeof(bad_data));

5007

g_assert_cmpint(close(tempfile), ==, 0);

5008

5009

char *const filename = strdup(tempfilename);

5010

g_assert_nonnull(filename);

5011

task_context task = {

5012

.func=open_and_parse_question,

5013

.question_filename=filename,

5014

.epoll_fd=epoll_fd,

5015

.password=(buffer[]){{}},

5016

.filename=filename,

5017

.cancelled_filenames=&cancelled_filenames,

5018

.current_time=(mono_microsecs[]){0},

5019

.mandos_client_exited=(bool[]){false},

5020

.password_is_read=(bool[]){false},

5021

};

5022

run_task_with_stderr_to_dev_null(task, queue);

5023

5024

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5025

5026

g_assert_cmpint(unlink(tempfilename), ==, 0);

5027

}

5028

5029

static

5030

void test_open_and_parse_question_nosocket(__attribute__((unused))

5031

test_fixture *fixture,

5032

__attribute__((unused))

5033

gconstpointer user_data){

5034

__attribute__((cleanup(cleanup_close)))

5035

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5036

g_assert_cmpint(epoll_fd, >=, 0);

5037

__attribute__((cleanup(string_set_clear)))

5038

string_set cancelled_filenames = {};

5039

__attribute__((cleanup(cleanup_queue)))

5040

task_queue *queue = create_queue();

5041

g_assert_nonnull(queue);

5042

5043

__attribute__((cleanup(cleanup_string)))

5044

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5045

g_assert_nonnull(tempfilename);

5046

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5047

g_assert_cmpint(questionfile, >, 0);

5048

FILE *qf = fdopen(questionfile, "w");

5049

g_assert_cmpint(fprintf(qf, "[Ask]\nPID=1\n"), >, 0);

5050

g_assert_cmpint(fclose(qf), ==, 0);

5051

5052

char *const filename = strdup(tempfilename);

5053

g_assert_nonnull(filename);

5054

task_context task = {

5055

.func=open_and_parse_question,

5056

.question_filename=filename,

5057

.epoll_fd=epoll_fd,

5058

.password=(buffer[]){{}},

5059

.filename=filename,

5060

.cancelled_filenames=&cancelled_filenames,

5061

.current_time=(mono_microsecs[]){0},

5062

.mandos_client_exited=(bool[]){false},

5063

.password_is_read=(bool[]){false},

5064

};

5065

run_task_with_stderr_to_dev_null(task, queue);

5066

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5067

5068

g_assert_cmpint(unlink(tempfilename), ==, 0);

5069

}

5070

5071

static

5072

void test_open_and_parse_question_badsocket(__attribute__((unused))

5073

test_fixture *fixture,

5074

__attribute__((unused))

5075

gconstpointer user_data){

5076

__attribute__((cleanup(cleanup_close)))

5077

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5078

g_assert_cmpint(epoll_fd, >=, 0);

5079

__attribute__((cleanup(string_set_clear)))

5080

string_set cancelled_filenames = {};

5081

__attribute__((cleanup(cleanup_queue)))

5082

task_queue *queue = create_queue();

5083

g_assert_nonnull(queue);

5084

5085

__attribute__((cleanup(cleanup_string)))

5086

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5087

g_assert_nonnull(tempfilename);

5088

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5089

g_assert_cmpint(questionfile, >, 0);

5090

FILE *qf = fdopen(questionfile, "w");

5091

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=\nPID=1\n"), >, 0);

5092

g_assert_cmpint(fclose(qf), ==, 0);

5093

5094

char *const filename = strdup(tempfilename);

5095

g_assert_nonnull(filename);

5096

task_context task = {

5097

.func=open_and_parse_question,

5098

.question_filename=filename,

5099

.epoll_fd=epoll_fd,

5100

.password=(buffer[]){{}},

5101

.filename=filename,

5102

.cancelled_filenames=&cancelled_filenames,

5103

.current_time=(mono_microsecs[]){0},

5104

.mandos_client_exited=(bool[]){false},

5105

.password_is_read=(bool[]){false},

5106

};

5107

run_task_with_stderr_to_dev_null(task, queue);

5108

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5109

5110

g_assert_cmpint(unlink(tempfilename), ==, 0);

5111

}

5112

5113

static

5114

void test_open_and_parse_question_nopid(__attribute__((unused))

5115

test_fixture *fixture,

5116

__attribute__((unused))

5117

gconstpointer user_data){

5118

__attribute__((cleanup(cleanup_close)))

5119

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5120

g_assert_cmpint(epoll_fd, >=, 0);

5121

__attribute__((cleanup(string_set_clear)))

5122

string_set cancelled_filenames = {};

5123

__attribute__((cleanup(cleanup_queue)))

5124

task_queue *queue = create_queue();

5125

g_assert_nonnull(queue);

5126

5127

__attribute__((cleanup(cleanup_string)))

5128

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5129

g_assert_nonnull(tempfilename);

5130

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5131

g_assert_cmpint(questionfile, >, 0);

5132

FILE *qf = fdopen(questionfile, "w");

5133

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\n"), >, 0);

5134

g_assert_cmpint(fclose(qf), ==, 0);

5135

5136

char *const filename = strdup(tempfilename);

5137

g_assert_nonnull(filename);

5138

task_context task = {

5139

.func=open_and_parse_question,

5140

.question_filename=filename,

5141

.epoll_fd=epoll_fd,

5142

.password=(buffer[]){{}},

5143

.filename=filename,

5144

.cancelled_filenames=&cancelled_filenames,

5145

.current_time=(mono_microsecs[]){0},

5146

.mandos_client_exited=(bool[]){false},

5147

.password_is_read=(bool[]){false},

5148

};

5149

run_task_with_stderr_to_dev_null(task, queue);

5150

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5151

5152

g_assert_cmpint(unlink(tempfilename), ==, 0);

5153

}

5154

5155

static

5156

void test_open_and_parse_question_badpid(__attribute__((unused))

5157

test_fixture *fixture,

5158

__attribute__((unused))

5159

gconstpointer user_data){

5160

__attribute__((cleanup(cleanup_close)))

5161

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5162

g_assert_cmpint(epoll_fd, >=, 0);

5163

__attribute__((cleanup(string_set_clear)))

5164

string_set cancelled_filenames = {};

5165

__attribute__((cleanup(cleanup_queue)))

5166

task_queue *queue = create_queue();

5167

g_assert_nonnull(queue);

5168

5169

__attribute__((cleanup(cleanup_string)))

5170

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5171

g_assert_nonnull(tempfilename);

5172

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5173

g_assert_cmpint(questionfile, >, 0);

5174

FILE *qf = fdopen(questionfile, "w");

5175

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=\n"),

5176

>, 0);

5177

g_assert_cmpint(fclose(qf), ==, 0);

5178

5179

char *const filename = strdup(tempfilename);

5180

g_assert_nonnull(filename);

5181

task_context task = {

5182

.func=open_and_parse_question,

5183

.question_filename=filename,

5184

.epoll_fd=epoll_fd,

5185

.password=(buffer[]){{}},

5186

.filename=filename,

5187

.cancelled_filenames=&cancelled_filenames,

5188

.current_time=(mono_microsecs[]){0},

5189

.mandos_client_exited=(bool[]){false},

5190

.password_is_read=(bool[]){false},

5191

};

5192

run_task_with_stderr_to_dev_null(task, queue);

5193

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5194

5195

g_assert_cmpint(unlink(tempfilename), ==, 0);

5196

}

5197

5198

static void

5199

test_open_and_parse_question_noexist_pid(__attribute__((unused))

5200

test_fixture *fixture,

5201

__attribute__((unused))

5202

gconstpointer user_data){

5203

__attribute__((cleanup(cleanup_close)))

5204

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5205

g_assert_cmpint(epoll_fd, >=, 0);

5206

__attribute__((cleanup(string_set_clear)))

5207

string_set cancelled_filenames = {};

5208

buffer password = {};

5209

bool mandos_client_exited = false;

5210

bool password_is_read = false;

5211

__attribute__((cleanup(cleanup_queue)))

5212

task_queue *queue = create_queue();

5213

g_assert_nonnull(queue);

5214

const mono_microsecs current_time = 0;

5215

5216

/* Find value of sysctl kernel.pid_max */

5217

uintmax_t pid_max = 0;

5218

FILE *sysctl_pid_max = fopen("/proc/sys/kernel/pid_max", "r");

5219

g_assert_nonnull(sysctl_pid_max);

5220

g_assert_cmpint(fscanf(sysctl_pid_max, "%" PRIuMAX, &pid_max),

5221

==, 1);

5222

g_assert_cmpint(fclose(sysctl_pid_max), ==, 0);

5223

5224

pid_t nonexisting_pid = ((pid_t)pid_max)+1;

5225

g_assert_true(nonexisting_pid > 0); /* Overflow check */

5226

5227

__attribute__((cleanup(cleanup_string)))

5228

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5229

g_assert_nonnull(tempfilename);

5230

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5231

g_assert_cmpint(questionfile, >, 0);

5232

FILE *qf = fdopen(questionfile, "w");

5233

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5234

PRIuMAX"\n", (uintmax_t)nonexisting_pid),

5235

>, 0);

5236

g_assert_cmpint(fclose(qf), ==, 0);

5237

5238

char *const question_filename = strdup(tempfilename);

5239

g_assert_nonnull(question_filename);

5240

task_context task = {

5241

.func=open_and_parse_question,

5242

.question_filename=question_filename,

5243

.epoll_fd=epoll_fd,

5244

.password=&password,

5245

.filename=question_filename,

5246

.cancelled_filenames=&cancelled_filenames,

5247

.current_time=&current_time,

5248

.mandos_client_exited=&mandos_client_exited,

5249

.password_is_read=&password_is_read,

5250

};

5251

run_task_with_stderr_to_dev_null(task, queue);

5252

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5253

5254

g_assert_cmpint(unlink(tempfilename), ==, 0);

5255

}

5256

5257

static void

5258

test_open_and_parse_question_no_notafter(__attribute__((unused))

5259

test_fixture *fixture,

5260

__attribute__((unused))

5261

gconstpointer user_data){

5262

__attribute__((cleanup(cleanup_close)))

5263

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5264

g_assert_cmpint(epoll_fd, >=, 0);

5265

__attribute__((cleanup(string_set_clear)))

5266

string_set cancelled_filenames = {};

5267

buffer password = {};

5268

bool mandos_client_exited = false;

5269

bool password_is_read = false;

5270

__attribute__((cleanup(cleanup_queue)))

5271

task_queue *queue = create_queue();

5272

g_assert_nonnull(queue);

5273

const mono_microsecs current_time = 0;

5274

5275

__attribute__((cleanup(cleanup_string)))

5276

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5277

g_assert_nonnull(tempfilename);

5278

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5279

g_assert_cmpint(questionfile, >, 0);

5280

FILE *qf = fdopen(questionfile, "w");

5281

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5282

PRIuMAX "\n", (uintmax_t)getpid()), >, 0);

5283

g_assert_cmpint(fclose(qf), ==, 0);

5284

5285

char *const filename = strdup(tempfilename);

5286

g_assert_nonnull(filename);

5287

task_context task = {

5288

.func=open_and_parse_question,

5289

.question_filename=filename,

5290

.epoll_fd=epoll_fd,

5291

.password=&password,

5292

.filename=filename,

5293

.cancelled_filenames=&cancelled_filenames,

5294

.current_time=&current_time,

5295

.mandos_client_exited=&mandos_client_exited,

5296

.password_is_read=&password_is_read,

5297

};

5298

task.func(task, queue);

5299

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5300

5301

__attribute__((cleanup(cleanup_string)))

5302

char *socket_filename = strdup("/nonexistent");

5303

g_assert_nonnull(socket_filename);

5304

g_assert_nonnull(find_matching_task(queue, (task_context){

5305

.func=connect_question_socket,

5306

.question_filename=tempfilename,

5307

.filename=socket_filename,

5308

.epoll_fd=epoll_fd,

5309

.password=&password,

5310

.current_time=&current_time,

5311

.mandos_client_exited=&mandos_client_exited,

5312

.password_is_read=&password_is_read,

5313

}));

5314

5315

g_assert_true(queue->next_run != 0);

5316

5317

g_assert_cmpint(unlink(tempfilename), ==, 0);

5318

}

5319

5320

static void

5321

test_open_and_parse_question_bad_notafter(__attribute__((unused))

5322

test_fixture *fixture,

5323

__attribute__((unused))

5324

gconstpointer user_data){

5325

__attribute__((cleanup(cleanup_close)))

5326

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5327

g_assert_cmpint(epoll_fd, >=, 0);

5328

__attribute__((cleanup(string_set_clear)))

5329

string_set cancelled_filenames = {};

5330

buffer password = {};

5331

bool mandos_client_exited = false;

5332

bool password_is_read = false;

5333

__attribute__((cleanup(cleanup_queue)))

5334

task_queue *queue = create_queue();

5335

g_assert_nonnull(queue);

5336

const mono_microsecs current_time = 0;

5337

5338

__attribute__((cleanup(cleanup_string)))

5339

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5340

g_assert_nonnull(tempfilename);

5341

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5342

g_assert_cmpint(questionfile, >, 0);

5343

FILE *qf = fdopen(questionfile, "w");

5344

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5345

PRIuMAX "\nNotAfter=\n",

5346

(uintmax_t)getpid()), >, 0);

5347

g_assert_cmpint(fclose(qf), ==, 0);

5348

5349

char *const filename = strdup(tempfilename);

5350

g_assert_nonnull(filename);

5351

task_context task = {

5352

.func=open_and_parse_question,

5353

.question_filename=filename,

5354

.epoll_fd=epoll_fd,

5355

.password=&password,

5356

.filename=filename,

5357

.cancelled_filenames=&cancelled_filenames,

5358

.current_time=&current_time,

5359

.mandos_client_exited=&mandos_client_exited,

5360

.password_is_read=&password_is_read,

5361

};

5362

run_task_with_stderr_to_dev_null(task, queue);

5363

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5364

5365

__attribute__((cleanup(cleanup_string)))

5366

char *socket_filename = strdup("/nonexistent");

5367

g_assert_nonnull(find_matching_task(queue, (task_context){

5368

.func=connect_question_socket,

5369

.question_filename=tempfilename,

5370

.filename=socket_filename,

5371

.epoll_fd=epoll_fd,

5372

.password=&password,

5373

.current_time=&current_time,

5374

.mandos_client_exited=&mandos_client_exited,

5375

.password_is_read=&password_is_read,

5376

}));

5377

g_assert_true(queue->next_run != 0);

5378

5379

g_assert_cmpint(unlink(tempfilename), ==, 0);

5380

}

5381

5382

static

5383

void assert_open_and_parse_question_with_notafter(const mono_microsecs

5384

current_time,

5385

const mono_microsecs

5386

notafter,

5387

const mono_microsecs

5388

next_queue_run){

5389

__attribute__((cleanup(cleanup_close)))

5390

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5391

g_assert_cmpint(epoll_fd, >=, 0);

5392

__attribute__((cleanup(string_set_clear)))

5393

string_set cancelled_filenames = {};

5394

buffer password = {};

5395

bool mandos_client_exited = false;

5396

bool password_is_read = false;

5397

__attribute__((cleanup(cleanup_queue)))

5398

task_queue *queue = create_queue();

5399

g_assert_nonnull(queue);

5400

queue->next_run = next_queue_run;

5401

5402

__attribute__((cleanup(cleanup_string)))

5403

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5404

g_assert_nonnull(tempfilename);

5405

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5406

g_assert_cmpint(questionfile, >, 0);

5407

FILE *qf = fdopen(questionfile, "w");

5408

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5409

PRIuMAX "\nNotAfter=%" PRIuMAX "\n",

5410

(uintmax_t)getpid(), notafter), >, 0);

5411

g_assert_cmpint(fclose(qf), ==, 0);

5412

5413

char *const filename = strdup(tempfilename);

5414

g_assert_nonnull(filename);

5415

task_context task = {

5416

.func=open_and_parse_question,

5417

.question_filename=filename,

5418

.epoll_fd=epoll_fd,

5419

.password=&password,

5420

.filename=filename,

5421

.cancelled_filenames=&cancelled_filenames,

5422

.current_time=&current_time,

5423

.mandos_client_exited=&mandos_client_exited,

5424

.password_is_read=&password_is_read,

5425

};

5426

task.func(task, queue);

5427

5428

if(queue->length >= 1){

5429

__attribute__((cleanup(cleanup_string)))

5430

char *socket_filename = strdup("/nonexistent");

5431

g_assert_nonnull(find_matching_task(queue, (task_context){

5432

.func=connect_question_socket,

5433

.filename=socket_filename,

5434

.epoll_fd=epoll_fd,

5435

.password=&password,

5436

.current_time=&current_time,

5437

.cancelled_filenames=&cancelled_filenames,

5438

.mandos_client_exited=&mandos_client_exited,

5439

.password_is_read=&password_is_read,

5440

}));

5441

g_assert_true(queue->next_run != 0);

5442

}

5443

5444

if(notafter == 0){

5445

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5446

} else if(current_time >= notafter) {

5447

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5448

} else {

5449

g_assert_nonnull(find_matching_task(queue, (task_context){

5450

.func=cancel_old_question,

5451

.question_filename=tempfilename,

5452

.filename=tempfilename,

5453

.notafter=notafter,

5454

.cancelled_filenames=&cancelled_filenames,

5455

.current_time=&current_time,

5456

}));

5457

}

5458

g_assert_true(queue->next_run == 1);

5459

5460

g_assert_cmpint(unlink(tempfilename), ==, 0);

5461

}

5462

5463

static void

5464

test_open_and_parse_question_notafter_0(__attribute__((unused))

5465

test_fixture *fixture,

5466

__attribute__((unused))

5467

gconstpointer user_data){

5468

/* current_time, notafter, next_queue_run */

5469

assert_open_and_parse_question_with_notafter(0, 0, 0);

5470

}

5471

5472

static void

5473

test_open_and_parse_question_notafter_1(__attribute__((unused))

5474

test_fixture *fixture,

5475

__attribute__((unused))

5476

gconstpointer user_data){

5477

/* current_time, notafter, next_queue_run */

5478

assert_open_and_parse_question_with_notafter(0, 1, 0);

5479

}

5480

5481

static void

5482

test_open_and_parse_question_notafter_1_1(__attribute__((unused))

5483

test_fixture *fixture,

5484

__attribute__((unused))

5485

gconstpointer user_data){

5486

/* current_time, notafter, next_queue_run */

5487

assert_open_and_parse_question_with_notafter(0, 1, 1);

5488

}

5489

5490

static void

5491

test_open_and_parse_question_notafter_1_2(__attribute__((unused))

5492

test_fixture *fixture,

5493

__attribute__((unused))

5494

gconstpointer user_data){

5495

/* current_time, notafter, next_queue_run */

5496

assert_open_and_parse_question_with_notafter(0, 1, 2);

5497

}

5498

5499

static void

5500

test_open_and_parse_question_equal_notafter(__attribute__((unused))

5501

test_fixture *fixture,

5502

__attribute__((unused))

5503

gconstpointer user_data){

5504

/* current_time, notafter, next_queue_run */

5505

assert_open_and_parse_question_with_notafter(1, 1, 0);

5506

}

5507

5508

static void

5509

test_open_and_parse_question_late_notafter(__attribute__((unused))

5510

test_fixture *fixture,

5511

__attribute__((unused))

5512

gconstpointer user_data){

5513

/* current_time, notafter, next_queue_run */

5514

assert_open_and_parse_question_with_notafter(2, 1, 0);

5515

}

5516

5517

static void assert_cancel_old_question_param(const mono_microsecs

5518

next_queue_run,

5519

const mono_microsecs

5520

notafter,

5521

const mono_microsecs

5522

current_time,

5523

const mono_microsecs

5524

next_set_to){

5525

__attribute__((cleanup(string_set_clear)))

5526

string_set cancelled_filenames = {};

5527

__attribute__((cleanup(cleanup_queue)))

5528

task_queue *queue = create_queue();

5529

g_assert_nonnull(queue);

5530

queue->next_run = next_queue_run;

5531

5532

char *const question_filename = strdup("/nonexistent");

5533

g_assert_nonnull(question_filename);

5534

task_context task = {

5535

.func=cancel_old_question,

5536

.question_filename=question_filename,

5537

.filename=question_filename,

5538

.notafter=notafter,

5539

.cancelled_filenames=&cancelled_filenames,

5540

.current_time=&current_time,

5541

};

5542

task.func(task, queue);

5543

5544

if(current_time >= notafter){

5545

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5546

g_assert_true(string_set_contains(cancelled_filenames,

5547

"/nonexistent"));

5548

} else {

5549

g_assert_nonnull(find_matching_task(queue, (task_context){

5550

.func=cancel_old_question,

5551

.question_filename=question_filename,

5552

.filename=question_filename,

5553

.notafter=notafter,

5554

.cancelled_filenames=&cancelled_filenames,

5555

.current_time=&current_time,

5556

}));

5557

5558

g_assert_false(string_set_contains(cancelled_filenames,

5559

question_filename));

5560

}

5561

g_assert_cmpuint((unsigned int)queue->next_run, ==,

5562

(unsigned int)next_set_to);

5563

}

5564

5565

static void test_cancel_old_question_0_1_2(__attribute__((unused))

5566

test_fixture *fixture,

5567

__attribute__((unused))

5568

gconstpointer user_data){

5569

/* next_queue_run unset,

5570

cancellation should happen because time has come,

5571

next_queue_run should be unchanged */

5572

/* next_queue_run, notafter, current_time, next_set_to */

5573

assert_cancel_old_question_param(0, 1, 2, 0);

5574

}

5575

5576

static void test_cancel_old_question_0_2_1(__attribute__((unused))

5577

test_fixture *fixture,

5578

__attribute__((unused))

5579

gconstpointer user_data){

5580

/* If next_queue_run is 0, meaning unset, and notafter is 2,

5581

and current_time is not yet notafter or greater,

5582

update value of next_queue_run to value of notafter */

5583

/* next_queue_run, notafter, current_time, next_set_to */

5584

assert_cancel_old_question_param(0, 2, 1, 2);

5585

}

5586

5587

static void test_cancel_old_question_1_2_3(__attribute__((unused))

5588

test_fixture *fixture,

5589

__attribute__((unused))

5590

gconstpointer user_data){

5591

/* next_queue_run 1,

5592

cancellation should happen because time has come,

5593

next_queue_run should be unchanged */

5594

/* next_queue_run, notafter, current_time, next_set_to */

5595

assert_cancel_old_question_param(1, 2, 3, 1);

5596

}

5597

5598

static void test_cancel_old_question_1_3_2(__attribute__((unused))

5599

test_fixture *fixture,

5600

__attribute__((unused))

5601

gconstpointer user_data){

5602

/* If next_queue_run is set,

5603

and current_time is not yet notafter or greater,

5604

and notafter is larger than next_queue_run

5605

next_queue_run should be unchanged */

5606

/* next_queue_run, notafter, current_time, next_set_to */

5607

assert_cancel_old_question_param(1, 3, 2, 1);

5608

}

5609

5610

static void test_cancel_old_question_2_1_3(__attribute__((unused))

5611

test_fixture *fixture,

5612

__attribute__((unused))

5613

gconstpointer user_data){

5614

/* next_queue_run 2,

5615

cancellation should happen because time has come,

5616

next_queue_run should be unchanged */

5617

/* next_queue_run, notafter, current_time, next_set_to */

5618

assert_cancel_old_question_param(2, 1, 3, 2);

5619

}

5620

5621

static void test_cancel_old_question_2_3_1(__attribute__((unused))

5622

test_fixture *fixture,

5623

__attribute__((unused))

5624

gconstpointer user_data){

5625

/* If next_queue_run is set,

5626

and current_time is not yet notafter or greater,

5627

and notafter is larger than next_queue_run

5628

next_queue_run should be unchanged */

5629

/* next_queue_run, notafter, current_time, next_set_to */

5630

assert_cancel_old_question_param(2, 3, 1, 2);

5631

}

5632

5633

static void test_cancel_old_question_3_1_2(__attribute__((unused))

5634

test_fixture *fixture,

5635

__attribute__((unused))

5636

gconstpointer user_data){

5637

/* next_queue_run 3,

5638

cancellation should happen because time has come,

5639

next_queue_run should be unchanged */

5640

/* next_queue_run, notafter, current_time, next_set_to */

5641

assert_cancel_old_question_param(3, 1, 2, 3);

5642

}

5643

5644

static void test_cancel_old_question_3_2_1(__attribute__((unused))

5645

test_fixture *fixture,

5646

__attribute__((unused))

5647

gconstpointer user_data){

5648

/* If next_queue_run is set,

5649

and current_time is not yet notafter or greater,

5650

and notafter is smaller than next_queue_run

5651

update value of next_queue_run to value of notafter */

5652

/* next_queue_run, notafter, current_time, next_set_to */

5653

assert_cancel_old_question_param(3, 2, 1, 2);

5654

}

5655

5656

static void

5657

test_connect_question_socket_name_too_long(__attribute__((unused))

5658

test_fixture *fixture,

5659

__attribute__((unused))

5660

gconstpointer user_data){

5661

__attribute__((cleanup(cleanup_close)))

5662

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5663

g_assert_cmpint(epoll_fd, >=, 0);

5664

const char question_filename[] = "/nonexistent/question";

5665

__attribute__((cleanup(string_set_clear)))

5666

string_set cancelled_filenames = {};

5667

__attribute__((cleanup(cleanup_queue)))

5668

task_queue *queue = create_queue();

5669

g_assert_nonnull(queue);

5670

__attribute__((cleanup(cleanup_string)))

5671

char *tempdir = make_temporary_directory();

5672

g_assert_nonnull(tempdir);

5673

struct sockaddr_un unix_socket = { .sun_family=AF_LOCAL };

5674

char socket_name[sizeof(unix_socket.sun_path)];

5675

memset(socket_name, 'x', sizeof(socket_name));

5676

socket_name[sizeof(socket_name)-1] = '\0';

5677

char *filename = NULL;

5678

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5679

>, 0);

5680

g_assert_nonnull(filename);

5681

5682

task_context task = {

5683

.func=connect_question_socket,

5684

.question_filename=strdup(question_filename),

5685

.epoll_fd=epoll_fd,

5686

.password=(buffer[]){{}},

5687

.filename=filename,

5688

.cancelled_filenames=&cancelled_filenames,

5689

.mandos_client_exited=(bool[]){false},

5690

.password_is_read=(bool[]){false},

5691

.current_time=(mono_microsecs[]){0},

5692

};

5693

g_assert_nonnull(task.question_filename);

5694

run_task_with_stderr_to_dev_null(task, queue);

5695

5696

g_assert_true(string_set_contains(cancelled_filenames,

5697

question_filename));

5698

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5699

g_assert_true(queue->next_run == 0);

5700

5701

g_assert_cmpint(rmdir(tempdir), ==, 0);

5702

}

5703

5704

static

5705

void test_connect_question_socket_connect_fail(__attribute__((unused))

5706

test_fixture *fixture,

5707

__attribute__((unused))

5708

gconstpointer

5709

user_data){

5710

__attribute__((cleanup(cleanup_close)))

5711

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5712

g_assert_cmpint(epoll_fd, >=, 0);

5713

const char question_filename[] = "/nonexistent/question";

5714

__attribute__((cleanup(string_set_clear)))

5715

string_set cancelled_filenames = {};

5716

const mono_microsecs current_time = 3;

5717

__attribute__((cleanup(cleanup_queue)))

5718

task_queue *queue = create_queue();

5719

g_assert_nonnull(queue);

5720

__attribute__((cleanup(cleanup_string)))

5721

char *tempdir = make_temporary_directory();

5722

g_assert_nonnull(tempdir);

5723

char socket_name[] = "nonexistent";

5724

char *filename = NULL;

5725

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5726

>, 0);

5727

g_assert_nonnull(filename);

5728

5729

task_context task = {

5730

.func=connect_question_socket,

5731

.question_filename=strdup(question_filename),

5732

.epoll_fd=epoll_fd,

5733

.password=(buffer[]){{}},

5734

.filename=filename,

5735

.cancelled_filenames=&cancelled_filenames,

5736

.mandos_client_exited=(bool[]){false},

5737

.password_is_read=(bool[]){false},

5738

.current_time=&current_time,

5739

};

5740

g_assert_nonnull(task.question_filename);

5741

run_task_with_stderr_to_dev_null(task, queue);

5742

5743

g_assert_nonnull(find_matching_task(queue, task));

5744

5745

g_assert_false(string_set_contains(cancelled_filenames,

5746

question_filename));

5747

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5748

g_assert_true(queue->next_run == 1000000 + current_time);

5749

5750

g_assert_cmpint(rmdir(tempdir), ==, 0);

5751

}

5752

5753

static

5754

void test_connect_question_socket_bad_epoll(__attribute__((unused))

5755

test_fixture *fixture,

5756

__attribute__((unused))

5757

gconstpointer user_data){

5758

__attribute__((cleanup(cleanup_close)))

5759

const int epoll_fd = open("/dev/null",

5760

O_WRONLY | O_CLOEXEC | O_NOCTTY);

5761

__attribute__((cleanup(cleanup_string)))

5762

char *const question_filename = strdup("/nonexistent/question");

5763

g_assert_nonnull(question_filename);

5764

__attribute__((cleanup(string_set_clear)))

5765

string_set cancelled_filenames = {};

5766

const mono_microsecs current_time = 5;

5767

__attribute__((cleanup(cleanup_queue)))

5768

task_queue *queue = create_queue();

5769

g_assert_nonnull(queue);

5770

__attribute__((cleanup(cleanup_string)))

5771

char *tempdir = make_temporary_directory();

5772

g_assert_nonnull(tempdir);

5773

__attribute__((cleanup(cleanup_close)))

5774

const int sock_fd = socket(PF_LOCAL, SOCK_DGRAM

5775

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0);

5776

g_assert_cmpint(sock_fd, >=, 0);

5777

struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };

5778

const char socket_name[] = "socket_name";

5779

__attribute__((cleanup(cleanup_string)))

5780

char *filename = NULL;

5781

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5782

>, 0);

5783

g_assert_nonnull(filename);

5784

g_assert_cmpint((int)strlen(filename), <,

5785

(int)sizeof(sock_name.sun_path));

5786

strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));

5787

sock_name.sun_path[sizeof(sock_name.sun_path)-1] = '\0';

5788

g_assert_cmpint((int)bind(sock_fd, (struct sockaddr *)&sock_name,

5789

(socklen_t)SUN_LEN(&sock_name)), >=, 0);

5790

task_context task = {

5791

.func=connect_question_socket,

5792

.question_filename=strdup(question_filename),

5793

.epoll_fd=epoll_fd,

5794

.password=(buffer[]){{}},

5795

.filename=strdup(filename),

5796

.cancelled_filenames=&cancelled_filenames,

5797

.mandos_client_exited=(bool[]){false},

5798

.password_is_read=(bool[]){false},

5799

.current_time=&current_time,

5800

};

5801

g_assert_nonnull(task.question_filename);

5802

run_task_with_stderr_to_dev_null(task, queue);

5803

5804

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5805

const task_context *const added_task

5806

= find_matching_task(queue, task);

5807

g_assert_nonnull(added_task);

5808

g_assert_true(queue->next_run == 1000000 + current_time);

5809

5810

g_assert_cmpint(unlink(filename), ==, 0);

5811

g_assert_cmpint(rmdir(tempdir), ==, 0);

5812

}

5813

5814

static

5815

void test_connect_question_socket_usable(__attribute__((unused))

5816

test_fixture *fixture,

5817

__attribute__((unused))

5818

gconstpointer user_data){

5819

__attribute__((cleanup(cleanup_close)))

5820

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5821

g_assert_cmpint(epoll_fd, >=, 0);

5822

__attribute__((cleanup(cleanup_string)))

5823

char *const question_filename = strdup("/nonexistent/question");

5824

g_assert_nonnull(question_filename);

5825

__attribute__((cleanup(string_set_clear)))

5826

string_set cancelled_filenames = {};

5827

buffer password = {};

5828

bool mandos_client_exited = false;

5829

bool password_is_read = false;

5830

const mono_microsecs current_time = 0;

5831

__attribute__((cleanup(cleanup_queue)))

5832

task_queue *queue = create_queue();

5833

g_assert_nonnull(queue);

5834

__attribute__((cleanup(cleanup_string)))

5835

char *tempdir = make_temporary_directory();

5836

g_assert_nonnull(tempdir);

5837

__attribute__((cleanup(cleanup_close)))

5838

const int sock_fd = socket(PF_LOCAL, SOCK_DGRAM

5839

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0);

5840

g_assert_cmpint(sock_fd, >=, 0);

5841

struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };

5842

const char socket_name[] = "socket_name";

5843

__attribute__((cleanup(cleanup_string)))

5844

char *filename = NULL;

5845

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5846

>, 0);

5847

g_assert_nonnull(filename);

5848

g_assert_cmpint((int)strlen(filename), <,

5849

(int)sizeof(sock_name.sun_path));

5850

strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));

5851

sock_name.sun_path[sizeof(sock_name.sun_path)-1] = '\0';

5852

g_assert_cmpint((int)bind(sock_fd, (struct sockaddr *)&sock_name,

5853

(socklen_t)SUN_LEN(&sock_name)), >=, 0);

5854

task_context task = {

5855

.func=connect_question_socket,

5856

.question_filename=strdup(question_filename),

5857

.epoll_fd=epoll_fd,

5858

.password=&password,

5859

.filename=strdup(filename),

5860

.cancelled_filenames=&cancelled_filenames,

5861

.mandos_client_exited=&mandos_client_exited,

5862

.password_is_read=&password_is_read,

5863

.current_time=&current_time,

5864

};

5865

g_assert_nonnull(task.question_filename);

5866

task.func(task, queue);

5867

5868

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5869

const task_context *const added_task

5870

= find_matching_task(queue, (task_context){

5871

.func=send_password_to_socket,

5872

.question_filename=question_filename,

5873

.filename=filename,

5874

.epoll_fd=epoll_fd,

5875

.password=&password,

5876

.cancelled_filenames=&cancelled_filenames,

5877

.mandos_client_exited=&mandos_client_exited,

5878

.password_is_read=&password_is_read,

5879

.current_time=&current_time,

5880

});

5881

g_assert_nonnull(added_task);

5882

g_assert_cmpint(added_task->fd, >, 0);

5883

5884

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

5885

EPOLLOUT));

5886

5887

const int fd = added_task->fd;

5888

g_assert_cmpint(fd, >, 0);

5889

g_assert_true(fd_has_cloexec_and_nonblock(fd));

5890

5891

/* write to fd */

5892

char write_data[PIPE_BUF];

5893

{

5894

/* Construct test password buffer */

5895

/* Start with + since that is what the real protocol uses */

5896

write_data[0] = '+';

5897

/* Set a special character at string end just to mark the end */

5898

write_data[sizeof(write_data)-2] = 'y';

5899

/* Set NUL at buffer end, as suggested by the protocol */

5900

write_data[sizeof(write_data)-1] = '\0';

5901

/* Fill rest of password with 'x' */

5902

memset(write_data+1, 'x', sizeof(write_data)-3);

5903

g_assert_cmpint((int)send(fd, write_data, sizeof(write_data),

5904

MSG_NOSIGNAL), ==, sizeof(write_data));

5905

}

5906

5907

/* read from sock_fd */

5908

char read_data[sizeof(write_data)];

5909

g_assert_cmpint((int)read(sock_fd, read_data, sizeof(read_data)),

5910

==, sizeof(read_data));

5911

5912

g_assert_true(memcmp(write_data, read_data, sizeof(write_data))

5913

== 0);

5914

5915

/* writing to sock_fd should fail */

5916

g_assert_cmpint(send(sock_fd, write_data, sizeof(write_data),

5917

MSG_NOSIGNAL), <, 0);

5918

5919

/* reading from fd should fail */

5920

g_assert_cmpint((int)recv(fd, read_data, sizeof(read_data),

5921

MSG_NOSIGNAL), <, 0);

5922

5923

g_assert_cmpint(unlink(filename), ==, 0);

5924

g_assert_cmpint(rmdir(tempdir), ==, 0);

5925

}

5926

5927

static void

5928

test_send_password_to_socket_client_not_exited(__attribute__((unused))

5929

test_fixture *fixture,

5930

__attribute__((unused))

5931

gconstpointer

5932

user_data){

5933

__attribute__((cleanup(cleanup_close)))

5934

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5935

g_assert_cmpint(epoll_fd, >=, 0);

5936

__attribute__((cleanup(cleanup_string)))

5937

char *const question_filename = strdup("/nonexistent/question");

5938

g_assert_nonnull(question_filename);

5939

__attribute__((cleanup(cleanup_string)))

5940

char *const filename = strdup("/nonexistent/socket");

5941

g_assert_nonnull(filename);

5942

__attribute__((cleanup(string_set_clear)))

5943

string_set cancelled_filenames = {};

5944

buffer password = {};

5945

bool password_is_read = true;

5946

__attribute__((cleanup(cleanup_queue)))

5947

task_queue *queue = create_queue();

5948

g_assert_nonnull(queue);

5949

int socketfds[2];

5950

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

5951

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

5952

socketfds), ==, 0);

5953

__attribute__((cleanup(cleanup_close)))

5954

const int read_socket = socketfds[0];

5955

const int write_socket = socketfds[1];

5956

task_context task = {

5957

.func=send_password_to_socket,

5958

.question_filename=strdup(question_filename),

5959

.filename=strdup(filename),

5960

.epoll_fd=epoll_fd,

5961

.fd=write_socket,

5962

.password=&password,

5963

.cancelled_filenames=&cancelled_filenames,

5964

.mandos_client_exited=(bool[]){false},

5965

.password_is_read=&password_is_read,

5966

.current_time=(mono_microsecs[]){0},

5967

};

5968

g_assert_nonnull(task.question_filename);

5969

5970

task.func(task, queue);

5971

5972

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5973

5974

const task_context *const added_task

5975

= find_matching_task(queue, task);

5976

g_assert_nonnull(added_task);

5977

g_assert_cmpuint((unsigned int)password.length, ==, 0);

5978

g_assert_true(password_is_read);

5979

5980

g_assert_cmpint(added_task->fd, >, 0);

5981

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

5982

EPOLLOUT));

5983

}

5984

5985

static void

5986

test_send_password_to_socket_password_not_read(__attribute__((unused))

5987

test_fixture *fixture,

5988

__attribute__((unused))

5989

gconstpointer

5990

user_data){

5991

__attribute__((cleanup(cleanup_close)))

5992

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5993

g_assert_cmpint(epoll_fd, >=, 0);

5994

__attribute__((cleanup(cleanup_string)))

5995

char *const question_filename = strdup("/nonexistent/question");

5996

g_assert_nonnull(question_filename);

5997

__attribute__((cleanup(cleanup_string)))

5998

char *const filename = strdup("/nonexistent/socket");

5999

__attribute__((cleanup(string_set_clear)))

6000

string_set cancelled_filenames = {};

6001

buffer password = {};

6002

__attribute__((cleanup(cleanup_queue)))

6003

task_queue *queue = create_queue();

6004

g_assert_nonnull(queue);

6005

int socketfds[2];

6006

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6007

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6008

socketfds), ==, 0);

6009

__attribute__((cleanup(cleanup_close)))

6010

const int read_socket = socketfds[0];

6011

const int write_socket = socketfds[1];

6012

task_context task = {

6013

.func=send_password_to_socket,

6014

.question_filename=strdup(question_filename),

6015

.filename=strdup(filename),

6016

.epoll_fd=epoll_fd,

6017

.fd=write_socket,

6018

.password=&password,

6019

.cancelled_filenames=&cancelled_filenames,

6020

.mandos_client_exited=(bool[]){false},

6021

.password_is_read=(bool[]){false},

6022

.current_time=(mono_microsecs[]){0},

6023

};

6024

g_assert_nonnull(task.question_filename);

6025

6026

task.func(task, queue);

6027

6028

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6029

6030

const task_context *const added_task = find_matching_task(queue,

6031

task);

6032

g_assert_nonnull(added_task);

6033

g_assert_cmpuint((unsigned int)password.length, ==, 0);

6034

g_assert_true(queue->next_run == 0);

6035

6036

g_assert_cmpint(added_task->fd, >, 0);

6037

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

6038

EPOLLOUT));

6039

}

6040

6041

static

6042

void test_send_password_to_socket_EMSGSIZE(__attribute__((unused))

6043

test_fixture *fixture,

6044

__attribute__((unused))

6045

gconstpointer user_data){

6046

__attribute__((cleanup(cleanup_close)))

6047

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6048

g_assert_cmpint(epoll_fd, >=, 0);

6049

const char question_filename[] = "/nonexistent/question";

6050

char *const filename = strdup("/nonexistent/socket");

6051

__attribute__((cleanup(string_set_clear)))

6052

string_set cancelled_filenames = {};

6053

int socketfds[2];

6054

6055

/* Find a message size which triggers EMSGSIZE */

6056

__attribute__((cleanup(cleanup_string)))

6057

char *message_buffer = NULL;

6058

size_t message_size = PIPE_BUF + 1;

6059

for(ssize_t ssret = 0; ssret >= 0; message_size += 1024){

6060

if(message_size >= 1024*1024*1024){ /* 1 GiB */

6061

g_test_skip("Skipping EMSGSIZE test: Will not try 1GiB");

6062

return;

6063

}

6064

message_buffer = realloc(message_buffer, message_size);

6065

if(message_buffer == NULL){

6066

g_test_skip("Skipping EMSGSIZE test");

6067

g_test_message("Failed to malloc() %" PRIuMAX " bytes",

6068

(uintmax_t)message_size);

6069

return;

6070

}

6071

/* Fill buffer with 'x' */

6072

memset(message_buffer, 'x', message_size);

6073

/* Create a new socketpair for each message size to avoid having

6074

to empty the pipe by reading the message to a separate buffer

6075

*/

6076

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6077

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6078

socketfds), ==, 0);

6079

ssret = send(socketfds[1], message_buffer, message_size,

6080

MSG_NOSIGNAL);

6081

error_t saved_errno = errno;

6082

g_assert_cmpint(close(socketfds[0]), ==, 0);

6083

g_assert_cmpint(close(socketfds[1]), ==, 0);

6084

6085

if(ssret < 0){

6086

if(saved_errno != EMSGSIZE) {

6087

g_test_skip("Skipping EMSGSIZE test");

6088

g_test_message("Error on send(%" PRIuMAX " bytes): %s",

6089

(uintmax_t)message_size,

6090

strerror(saved_errno));

6091

return;

6092

}

6093

break;

6094

} else if(ssret != (ssize_t)message_size){

6095

g_test_skip("Skipping EMSGSIZE test");

6096

g_test_message("Partial send(): %" PRIuMAX " of %" PRIdMAX

6097

" bytes", (uintmax_t)ssret,

6098

(intmax_t)message_size);

6099

return;

6100

}

6101

}

6102

g_test_message("EMSGSIZE triggered by %" PRIdMAX " bytes",

6103

(intmax_t)message_size);

6104

6105

buffer password = {

6106

.data=message_buffer,

6107

.length=message_size - 2, /* Compensate for added '+' and NUL */

6108

.allocated=message_size,

6109

};

6110

if(mlock(password.data, password.allocated) != 0){

6111

g_assert_true(errno == EPERM or errno == ENOMEM);

6112

}

6113

6114

__attribute__((cleanup(cleanup_queue)))

6115

task_queue *queue = create_queue();

6116

g_assert_nonnull(queue);

6117

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6118

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6119

socketfds), ==, 0);

6120

__attribute__((cleanup(cleanup_close)))

6121

const int read_socket = socketfds[0];

6122

__attribute__((cleanup(cleanup_close)))

6123

const int write_socket = socketfds[1];

6124

task_context task = {

6125

.func=send_password_to_socket,

6126

.question_filename=strdup(question_filename),

6127

.filename=filename,

6128

.epoll_fd=epoll_fd,

6129

.fd=write_socket,

6130

.password=&password,

6131

.cancelled_filenames=&cancelled_filenames,

6132

.mandos_client_exited=(bool[]){true},

6133

.password_is_read=(bool[]){true},

6134

.current_time=(mono_microsecs[]){0},

6135

};

6136

g_assert_nonnull(task.question_filename);

6137

6138

run_task_with_stderr_to_dev_null(task, queue);

6139

6140

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6141

g_assert_true(string_set_contains(cancelled_filenames,

6142

question_filename));

6143

}

6144

6145

static void test_send_password_to_socket_retry(__attribute__((unused))

6146

test_fixture *fixture,

6147

__attribute__((unused))

6148

gconstpointer

6149

user_data){

6150

__attribute__((cleanup(cleanup_close)))

6151

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6152

g_assert_cmpint(epoll_fd, >=, 0);

6153

__attribute__((cleanup(cleanup_string)))

6154

char *const question_filename = strdup("/nonexistent/question");

6155

g_assert_nonnull(question_filename);

6156

__attribute__((cleanup(cleanup_string)))

6157

char *const filename = strdup("/nonexistent/socket");

6158

g_assert_nonnull(filename);

6159

__attribute__((cleanup(string_set_clear)))

6160

string_set cancelled_filenames = {};

6161

__attribute__((cleanup(cleanup_buffer)))

6162

buffer password = {};

6163

6164

__attribute__((cleanup(cleanup_queue)))

6165

task_queue *queue = create_queue();

6166

g_assert_nonnull(queue);

6167

int socketfds[2];

6168

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6169

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6170

socketfds), ==, 0);

6171

__attribute__((cleanup(cleanup_close)))

6172

const int read_socket = socketfds[0];

6173

const int write_socket = socketfds[1];

6174

/* Close the server side socket to force ECONNRESET on client */

6175

g_assert_cmpint(close(read_socket), ==, 0);

6176

task_context task = {

6177

.func=send_password_to_socket,

6178

.question_filename=strdup(question_filename),

6179

.filename=strdup(filename),

6180

.epoll_fd=epoll_fd,

6181

.fd=write_socket,

6182

.password=&password,

6183

.cancelled_filenames=&cancelled_filenames,

6184

.mandos_client_exited=(bool[]){true},

6185

.password_is_read=(bool[]){true},

6186

.current_time=(mono_microsecs[]){0},

6187

};

6188

g_assert_nonnull(task.question_filename);

6189

6190

task.func(task, queue);

6191

6192

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6193

6194

const task_context *const added_task = find_matching_task(queue,

6195

task);

6196

g_assert_nonnull(added_task);

6197

g_assert_cmpuint((unsigned int)password.length, ==, 0);

6198

6199

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

6200

EPOLLOUT));

6201

}

6202

6203

static

6204

void test_send_password_to_socket_bad_epoll(__attribute__((unused))

6205

test_fixture *fixture,

6206

__attribute__((unused))

6207

gconstpointer user_data){

6208

__attribute__((cleanup(cleanup_close)))

6209

const int epoll_fd = open("/dev/null",

6210

O_WRONLY | O_CLOEXEC | O_NOCTTY);

6211

__attribute__((cleanup(cleanup_string)))

6212

char *const question_filename = strdup("/nonexistent/question");

6213

g_assert_nonnull(question_filename);

6214

__attribute__((cleanup(cleanup_string)))

6215

char *const filename = strdup("/nonexistent/socket");

6216

g_assert_nonnull(filename);

6217

__attribute__((cleanup(string_set_clear)))

6218

string_set cancelled_filenames = {};

6219

__attribute__((cleanup(cleanup_buffer)))

6220

buffer password = {};

6221

6222

const mono_microsecs current_time = 11;

6223

__attribute__((cleanup(cleanup_queue)))

6224

task_queue *queue = create_queue();

6225

g_assert_nonnull(queue);

6226

int socketfds[2];

6227

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6228

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6229

socketfds), ==, 0);

6230

__attribute__((cleanup(cleanup_close)))

6231

const int read_socket = socketfds[0];

6232

const int write_socket = socketfds[1];

6233

/* Close the server side socket to force ECONNRESET on client */

6234

g_assert_cmpint(close(read_socket), ==, 0);

6235

task_context task = {

6236

.func=send_password_to_socket,

6237

.question_filename=strdup(question_filename),

6238

.filename=strdup(filename),

6239

.epoll_fd=epoll_fd,

6240

.fd=write_socket,

6241

.password=&password,

6242

.cancelled_filenames=&cancelled_filenames,

6243

.mandos_client_exited=(bool[]){true},

6244

.password_is_read=(bool[]){true},

6245

.current_time=&current_time,

6246

};

6247

g_assert_nonnull(task.question_filename);

6248

6249

run_task_with_stderr_to_dev_null(task, queue);

6250

6251

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6252

6253

const task_context *const added_task = find_matching_task(queue,

6254

task);

6255

g_assert_nonnull(added_task);

6256

g_assert_true(queue->next_run == current_time + 1000000);

6257

g_assert_cmpuint((unsigned int)password.length, ==, 0);

6258

}

6259

6260

static void assert_send_password_to_socket_password(buffer password){

6261

__attribute__((cleanup(cleanup_close)))

6262

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6263

g_assert_cmpint(epoll_fd, >=, 0);

6264

char *const question_filename = strdup("/nonexistent/question");

6265

g_assert_nonnull(question_filename);

6266

char *const filename = strdup("/nonexistent/socket");

6267

g_assert_nonnull(filename);

6268

__attribute__((cleanup(string_set_clear)))

6269

string_set cancelled_filenames = {};

6270

6271

__attribute__((cleanup(cleanup_queue)))

6272

task_queue *queue = create_queue();

6273

g_assert_nonnull(queue);

6274

int socketfds[2];

6275

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6276

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6277

socketfds), ==, 0);

6278

__attribute__((cleanup(cleanup_close)))

6279

const int read_socket = socketfds[0];

6280

const int write_socket = socketfds[1];

6281

task_context task = {

6282

.func=send_password_to_socket,

6283

.question_filename=question_filename,

6284

.filename=filename,

6285

.epoll_fd=epoll_fd,

6286

.fd=write_socket,

6287

.password=&password,

6288

.cancelled_filenames=&cancelled_filenames,

6289

.mandos_client_exited=(bool[]){true},

6290

.password_is_read=(bool[]){true},

6291

.current_time=(mono_microsecs[]){0},

6292

};

6293

6294

char *expected_written_data = malloc(password.length + 2);

6295

g_assert_nonnull(expected_written_data);

6296

expected_written_data[0] = '+';

6297

expected_written_data[password.length + 1] = '\0';

6298

if(password.length > 0){

6299

g_assert_nonnull(password.data);

6300

memcpy(expected_written_data + 1, password.data, password.length);

6301

}

6302

6303

task.func(task, queue);

6304

6305

char buf[PIPE_BUF];

6306

g_assert_cmpint((int)read(read_socket, buf, PIPE_BUF), ==,

6307

(int)(password.length + 2));

6308

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6309

6310

g_assert_true(memcmp(expected_written_data, buf,

6311

password.length + 2) == 0);

6312

6313

g_assert_true(epoll_set_does_not_contain(epoll_fd, write_socket));

6314

6315

free(expected_written_data);

6316

}

6317

6318

static void

6319

test_send_password_to_socket_null_password(__attribute__((unused))

6320

test_fixture *fixture,

6321

__attribute__((unused))

6322

gconstpointer user_data){

6323

__attribute__((cleanup(cleanup_buffer)))

6324

buffer password = {};

6325

assert_send_password_to_socket_password(password);

6326

}

6327

6328

static void

6329

test_send_password_to_socket_empty_password(__attribute__((unused))

6330

test_fixture *fixture,

6331

__attribute__((unused))

6332

gconstpointer user_data){

6333

__attribute__((cleanup(cleanup_buffer)))

6334

buffer password = {

6335

.data=malloc(1), /* because malloc(0) may return NULL */

6336

.length=0,

6337

.allocated=0, /* deliberate lie */

6338

};

6339

g_assert_nonnull(password.data);

6340

assert_send_password_to_socket_password(password);

6341

}

6342

6343

static void

6344

test_send_password_to_socket_empty_str_pass(__attribute__((unused))

6345

test_fixture *fixture,

6346

__attribute__((unused))

6347

gconstpointer user_data){

6348

__attribute__((cleanup(cleanup_buffer)))

6349

buffer password = {

6350

.data=strdup(""),

6351

.length=0,

6352

.allocated=1,

6353

};

6354

if(mlock(password.data, password.allocated) != 0){

6355

g_assert_true(errno == EPERM or errno == ENOMEM);

6356

}

6357

assert_send_password_to_socket_password(password);

6358

}

6359

6360

static void

6361

test_send_password_to_socket_text_password(__attribute__((unused))

6362

test_fixture *fixture,

6363

__attribute__((unused))

6364

gconstpointer user_data){

6365

const char dummy_test_password[] = "dummy test password";

6366

__attribute__((cleanup(cleanup_buffer)))

6367

buffer password = {

6368

.data = strdup(dummy_test_password),

6369

.length = strlen(dummy_test_password),

6370

.allocated = sizeof(dummy_test_password),

6371

};

6372

if(mlock(password.data, password.allocated) != 0){

6373

g_assert_true(errno == EPERM or errno == ENOMEM);

6374

}

6375

assert_send_password_to_socket_password(password);

6376

}

6377

6378

static void

6379

test_send_password_to_socket_binary_password(__attribute__((unused))

6380

test_fixture *fixture,

6381

__attribute__((unused))

6382

gconstpointer user_data){

6383

__attribute__((cleanup(cleanup_buffer)))

6384

buffer password = {

6385

.data=malloc(255),

6386

.length=255,

6387

.allocated=255,

6388

};

6389

g_assert_nonnull(password.data);

6390

if(mlock(password.data, password.allocated) != 0){

6391

g_assert_true(errno == EPERM or errno == ENOMEM);

6392

}

6393

char c = 1; /* Start at 1, avoiding NUL */

6394

for(int i=0; i < 255; i++){

6395

password.data[i] = c++;

6396

}

6397

assert_send_password_to_socket_password(password);

6398

}

6399

6400

static void

6401

test_send_password_to_socket_nuls_in_password(__attribute__((unused))

6402

test_fixture *fixture,

6403

__attribute__((unused))

6404

gconstpointer

6405

user_data){

6406

char test_password[] = {'\0', 'a', '\0', 'b', '\0', 'c', '\0'};

6407

__attribute__((cleanup(cleanup_buffer)))

6408

buffer password = {

6409

.data=malloc(sizeof(test_password)),

6410

.length=sizeof(test_password),

6411

.allocated=sizeof(test_password),

6412

};

6413

g_assert_nonnull(password.data);

6414

if(mlock(password.data, password.allocated) !=0){

6415

g_assert_true(errno == EPERM or errno == ENOMEM);

6416

}

6417

memcpy(password.data, test_password, password.allocated);

6418

assert_send_password_to_socket_password(password);

6419

}

6420

6421

static bool assert_add_existing_questions_to_devnull(task_queue

6422

*const,

6423

const int,

6424

buffer *const,

6425

string_set *,

6426

const

6427

mono_microsecs

6428

*const,

6429

bool *const,

6430

bool *const,

6431

const char

6432

*const);

6433

6434

static void test_add_existing_questions_ENOENT(__attribute__((unused))

6435

test_fixture *fixture,

6436

__attribute__((unused))

6437

gconstpointer

6438

user_data){

6439

__attribute__((cleanup(cleanup_queue)))

6440

task_queue *queue = create_queue();

6441

g_assert_nonnull(queue);

6442

__attribute__((cleanup(cleanup_close)))

6443

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6444

g_assert_cmpint(epoll_fd, >=, 0);

6445

__attribute__((cleanup(string_set_clear)))

6446

string_set cancelled_filenames = {};

6447

6448

g_assert_false(assert_add_existing_questions_to_devnull

6449

(queue,

6450

epoll_fd,

6451

(buffer[]){{}}, /* password */

6452

&cancelled_filenames,

6453

(mono_microsecs[]){0}, /* current_time */

6454

(bool[]){false}, /* mandos_client_exited */

6455

(bool[]){false}, /* password_is_read */

6456

"/nonexistent")); /* dirname */

6457

6458

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6459

}

6460

6461

static

6462

bool assert_add_existing_questions_to_devnull(task_queue

6463

*const queue,

6464

const int

6465

epoll_fd,

6466

buffer *const

6467

password,

6468

string_set

6469

*cancelled_filenames,

6470

const mono_microsecs

6471

*const current_time,

6472

bool *const

6473

mandos_client_exited,

6474

bool *const

6475

password_is_read,

6476

const char *const

6477

dirname){

6478

__attribute__((cleanup(cleanup_close)))

6479

const int devnull_fd = open("/dev/null",

6480

O_WRONLY | O_CLOEXEC | O_NOCTTY);

6481

g_assert_cmpint(devnull_fd, >=, 0);

6482

__attribute__((cleanup(cleanup_close)))

6483

const int real_stderr_fd = dup(STDERR_FILENO);

6484

g_assert_cmpint(real_stderr_fd, >=, 0);

6485

dup2(devnull_fd, STDERR_FILENO);

6486

const bool ret = add_existing_questions(queue, epoll_fd, password,

6487

cancelled_filenames,

6488

current_time,

6489

mandos_client_exited,

6490

password_is_read, dirname);

6491

dup2(real_stderr_fd, STDERR_FILENO);

6492

return ret;

6493

}

6494

6495

static

6496

void test_add_existing_questions_no_questions(__attribute__((unused))

6497

test_fixture *fixture,

6498

__attribute__((unused))

6499

gconstpointer

6500

user_data){

6501

__attribute__((cleanup(cleanup_queue)))

6502

task_queue *queue = create_queue();

6503

g_assert_nonnull(queue);

6504

__attribute__((cleanup(cleanup_close)))

6505

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6506

g_assert_cmpint(epoll_fd, >=, 0);

6507

__attribute__((cleanup(string_set_clear)))

6508

string_set cancelled_filenames = {};

6509

__attribute__((cleanup(cleanup_string)))

6510

char *tempdir = make_temporary_directory();

6511

g_assert_nonnull(tempdir);

6512

6513

g_assert_false(assert_add_existing_questions_to_devnull

6514

(queue,

6515

epoll_fd,

6516

(buffer[]){{}}, /* password */

6517

&cancelled_filenames,

6518

(mono_microsecs[]){0}, /* current_time */

6519

(bool[]){false}, /* mandos_client_exited */

6520

(bool[]){false}, /* password_is_read */

6521

tempdir));

6522

6523

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6524

6525

g_assert_cmpint(rmdir(tempdir), ==, 0);

6526

}

6527

6528

static char *make_question_file_in_directory(const char *const);

6529

6530

static

6531

void test_add_existing_questions_one_question(__attribute__((unused))

6532

test_fixture *fixture,

6533

__attribute__((unused))

6534

gconstpointer

6535

user_data){

6536

__attribute__((cleanup(cleanup_queue)))

6537

task_queue *queue = create_queue();

6538

g_assert_nonnull(queue);

6539

__attribute__((cleanup(cleanup_close)))

6540

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6541

g_assert_cmpint(epoll_fd, >=, 0);

6542

__attribute__((cleanup(cleanup_buffer)))

6543

buffer password = {};

6544

__attribute__((cleanup(string_set_clear)))

6545

string_set cancelled_filenames = {};

6546

const mono_microsecs current_time = 0;

6547

bool mandos_client_exited = false;

6548

bool password_is_read = false;

6549

__attribute__((cleanup(cleanup_string)))

6550

char *tempdir = make_temporary_directory();

6551

g_assert_nonnull(tempdir);

6552

__attribute__((cleanup(cleanup_string)))

6553

char *question_filename

6554

= make_question_file_in_directory(tempdir);

6555

g_assert_nonnull(question_filename);

6556

6557

g_assert_true(assert_add_existing_questions_to_devnull

6558

(queue,

6559

epoll_fd,

6560

&password,

6561

&cancelled_filenames,

6562

&current_time,

6563

&mandos_client_exited,

6564

&password_is_read,

6565

tempdir));

6566

6567

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6568

6569

g_assert_nonnull(find_matching_task(queue, (task_context){

6570

.func=open_and_parse_question,

6571

.epoll_fd=epoll_fd,

6572

.filename=question_filename,

6573

.question_filename=question_filename,

6574

.password=&password,

6575

.cancelled_filenames=&cancelled_filenames,

6576

.current_time=&current_time,

6577

.mandos_client_exited=&mandos_client_exited,

6578

.password_is_read=&password_is_read,

6579

}));

6580

6581

g_assert_true(queue->next_run == 1);

6582

6583

g_assert_cmpint(unlink(question_filename), ==, 0);

6584

g_assert_cmpint(rmdir(tempdir), ==, 0);

6585

}

6586

6587

static char *make_question_file_in_directory(const char

6588

*const dir){

6589

return make_temporary_prefixed_file_in_directory("ask.", dir);

6590

}

6591

6592

static

6593

void test_add_existing_questions_two_questions(__attribute__((unused))

6594

test_fixture *fixture,

6595

__attribute__((unused))

6596

gconstpointer

6597

user_data){

6598

__attribute__((cleanup(cleanup_queue)))

6599

task_queue *queue = create_queue();

6600

g_assert_nonnull(queue);

6601

__attribute__((cleanup(cleanup_close)))

6602

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6603

g_assert_cmpint(epoll_fd, >=, 0);

6604

__attribute__((cleanup(cleanup_buffer)))

6605

buffer password = {};

6606

__attribute__((cleanup(string_set_clear)))

6607

string_set cancelled_filenames = {};

6608

const mono_microsecs current_time = 0;

6609

bool mandos_client_exited = false;

6610

bool password_is_read = false;

6611

__attribute__((cleanup(cleanup_string)))

6612

char *tempdir = make_temporary_directory();

6613

g_assert_nonnull(tempdir);

6614

__attribute__((cleanup(cleanup_string)))

6615

char *question_filename1

6616

= make_question_file_in_directory(tempdir);

6617

g_assert_nonnull(question_filename1);

6618

__attribute__((cleanup(cleanup_string)))

6619

char *question_filename2

6620

= make_question_file_in_directory(tempdir);

6621

g_assert_nonnull(question_filename2);

6622

6623

g_assert_true(assert_add_existing_questions_to_devnull

6624

(queue,

6625

epoll_fd,

6626

&password,

6627

&cancelled_filenames,

6628

&current_time,

6629

&mandos_client_exited,

6630

&password_is_read,

6631

tempdir));

6632

6633

g_assert_cmpuint((unsigned int)queue->length, ==, 2);

6634

6635

g_assert_true(queue->next_run == 1);

6636

6637

__attribute__((cleanup(string_set_clear)))

6638

string_set seen_questions = {};

6639

6640

bool queue_contains_question_opener(char *const question_filename){

6641

return(find_matching_task(queue, (task_context){

6642

.func=open_and_parse_question,

6643

.epoll_fd=epoll_fd,

6644

.question_filename=question_filename,

6645

.password=&password,

6646

.cancelled_filenames=&cancelled_filenames,

6647

.current_time=&current_time,

6648

.mandos_client_exited=&mandos_client_exited,

6649

.password_is_read=&password_is_read,

6650

}) != NULL);

6651

}

6652

6653

g_assert_true(queue_contains_question_opener(question_filename1));

6654

g_assert_true(queue_contains_question_opener(question_filename2));

6655

6656

g_assert_true(queue->next_run == 1);

6657

6658

g_assert_cmpint(unlink(question_filename1), ==, 0);

6659

g_assert_cmpint(unlink(question_filename2), ==, 0);

6660

g_assert_cmpint(rmdir(tempdir), ==, 0);

6661

}

6662

6663

static void

6664

test_add_existing_questions_non_questions(__attribute__((unused))

6665

test_fixture *fixture,

6666

__attribute__((unused))

6667

gconstpointer user_data){

6668

__attribute__((cleanup(cleanup_queue)))

6669

task_queue *queue = create_queue();

6670

g_assert_nonnull(queue);

6671

__attribute__((cleanup(cleanup_close)))

6672

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6673

g_assert_cmpint(epoll_fd, >=, 0);

6674

__attribute__((cleanup(string_set_clear)))

6675

string_set cancelled_filenames = {};

6676

__attribute__((cleanup(cleanup_string)))

6677

char *tempdir = make_temporary_directory();

6678

g_assert_nonnull(tempdir);

6679

__attribute__((cleanup(cleanup_string)))

6680

char *question_filename1

6681

= make_temporary_file_in_directory(tempdir);

6682

g_assert_nonnull(question_filename1);

6683

__attribute__((cleanup(cleanup_string)))

6684

char *question_filename2

6685

= make_temporary_file_in_directory(tempdir);

6686

g_assert_nonnull(question_filename2);

6687

6688

g_assert_false(assert_add_existing_questions_to_devnull

6689

(queue,

6690

epoll_fd,

6691

(buffer[]){{}}, /* password */

6692

&cancelled_filenames,

6693

(mono_microsecs[]){0}, /* current_time */

6694

(bool[]){false}, /* mandos_client_exited */

6695

(bool[]){false}, /* password_is_read */

6696

tempdir));

6697

6698

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6699

6700

g_assert_cmpint(unlink(question_filename1), ==, 0);

6701

g_assert_cmpint(unlink(question_filename2), ==, 0);

6702

g_assert_cmpint(rmdir(tempdir), ==, 0);

6703

}

6704

6705

static void

6706

test_add_existing_questions_both_types(__attribute__((unused))

6707

test_fixture *fixture,

6708

__attribute__((unused))

6709

gconstpointer user_data){

6710

__attribute__((cleanup(cleanup_queue)))

6711

task_queue *queue = create_queue();

6712

g_assert_nonnull(queue);

6713

__attribute__((cleanup(cleanup_close)))

6714

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6715

g_assert_cmpint(epoll_fd, >=, 0);

6716

__attribute__((cleanup(cleanup_buffer)))

6717

buffer password = {};

6718

__attribute__((cleanup(string_set_clear)))

6719

string_set cancelled_filenames = {};

6720

const mono_microsecs current_time = 0;

6721

bool mandos_client_exited = false;

6722

bool password_is_read = false;

6723

__attribute__((cleanup(cleanup_string)))

6724

char *tempdir = make_temporary_directory();

6725

g_assert_nonnull(tempdir);

6726

__attribute__((cleanup(cleanup_string)))

6727

char *tempfilename1 = make_temporary_file_in_directory(tempdir);

6728

g_assert_nonnull(tempfilename1);

6729

__attribute__((cleanup(cleanup_string)))

6730

char *tempfilename2 = make_temporary_file_in_directory(tempdir);

6731

g_assert_nonnull(tempfilename2);

6732

__attribute__((cleanup(cleanup_string)))

6733

char *question_filename

6734

= make_question_file_in_directory(tempdir);

6735

g_assert_nonnull(question_filename);

6736

6737

g_assert_true(assert_add_existing_questions_to_devnull

6738

(queue,

6739

epoll_fd,

6740

&password,

6741

&cancelled_filenames,

6742

&current_time,

6743

&mandos_client_exited,

6744

&password_is_read,

6745

tempdir));

6746

6747

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6748

6749

g_assert_nonnull(find_matching_task(queue, (task_context){

6750

.func=open_and_parse_question,

6751

.epoll_fd=epoll_fd,

6752

.filename=question_filename,

6753

.question_filename=question_filename,

6754

.password=&password,

6755

.cancelled_filenames=&cancelled_filenames,

6756

.current_time=&current_time,

6757

.mandos_client_exited=&mandos_client_exited,

6758

.password_is_read=&password_is_read,

6759

}));

6760

6761

g_assert_true(queue->next_run == 1);

6762

6763

g_assert_cmpint(unlink(tempfilename1), ==, 0);

6764

g_assert_cmpint(unlink(tempfilename2), ==, 0);

6765

g_assert_cmpint(unlink(question_filename), ==, 0);

6766

g_assert_cmpint(rmdir(tempdir), ==, 0);

6767

}

6768

6769

static void test_wait_for_event_timeout(__attribute__((unused))

6770

test_fixture *fixture,

6771

__attribute__((unused))

6772

gconstpointer user_data){

6773

__attribute__((cleanup(cleanup_close)))

6774

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6775

g_assert_cmpint(epoll_fd, >=, 0);

6776

6777

g_assert_true(wait_for_event(epoll_fd, 1, 0));

6778

}

6779

6780

static void test_wait_for_event_event(__attribute__((unused))

6781

test_fixture *fixture,

6782

__attribute__((unused))

6783

gconstpointer user_data){

6784

__attribute__((cleanup(cleanup_close)))

6785

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6786

g_assert_cmpint(epoll_fd, >=, 0);

6787

int pipefds[2];

6788

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

6789

__attribute__((cleanup(cleanup_close)))

6790

const int read_pipe = pipefds[0];

6791

__attribute__((cleanup(cleanup_close)))

6792

const int write_pipe = pipefds[1];

6793

g_assert_cmpint(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, read_pipe,

6794

&(struct epoll_event)

6795

{ .events=EPOLLIN | EPOLLRDHUP }), ==, 0);

6796

g_assert_cmpint((int)write(write_pipe, "x", 1), ==, 1);

6797

6798

g_assert_true(wait_for_event(epoll_fd, 0, 0));

6799

}

6800

6801

static void test_wait_for_event_sigchld(test_fixture *fixture,

6802

__attribute__((unused))

6803

gconstpointer user_data){

6804

const pid_t pid = fork();

6805

if(pid == 0){ /* Child */

6806

if(not restore_signal_handler(&fixture->orig_sigaction)){

6807

_exit(EXIT_FAILURE);

6808

}

6809

if(not restore_sigmask(&fixture->orig_sigmask)){

6810

_exit(EXIT_FAILURE);

6811

}

6812

exit(EXIT_SUCCESS);

6813

}

6814

g_assert_true(pid != -1);

6815

__attribute__((cleanup(cleanup_close)))

6816

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6817

g_assert_cmpint(epoll_fd, >=, 0);

6818

6819

g_assert_true(wait_for_event(epoll_fd, 0, 0));

6820

6821

int status;

6822

g_assert_true(waitpid(pid, &status, 0) == pid);

6823

g_assert_true(WIFEXITED(status));

6824

g_assert_cmpint(WEXITSTATUS(status), ==, EXIT_SUCCESS);

6825

}

6826

6827

static void test_run_queue_zeroes_next_run(__attribute__((unused))

6828

test_fixture *fixture,

6829

__attribute__((unused))

6830

gconstpointer user_data){

6831

__attribute__((cleanup(cleanup_queue)))

6832

task_queue *queue = create_queue();

6833

g_assert_nonnull(queue);

6834

queue->next_run = 1;

6835

__attribute__((cleanup(cleanup_close)))

6836

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6837

__attribute__((cleanup(string_set_clear)))

6838

string_set cancelled_filenames = {};

6839

bool quit_now = false;

6840

6841

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6842

g_assert_false(quit_now);

6843

g_assert_cmpuint((unsigned int)queue->next_run, ==, 0);

6844

}

6845

6846

static

6847

void test_run_queue_clears_cancelled_filenames(__attribute__((unused))

6848

test_fixture *fixture,

6849

__attribute__((unused))

6850

gconstpointer

6851

user_data){

6852

__attribute__((cleanup(cleanup_queue)))

6853

task_queue *queue = create_queue();

6854

g_assert_nonnull(queue);

6855

__attribute__((cleanup(string_set_clear)))

6856

string_set cancelled_filenames = {};

6857

bool quit_now = false;

6858

const char question_filename[] = "/nonexistent/question_filename";

6859

g_assert_true(string_set_add(&cancelled_filenames,

6860

question_filename));

6861

6862

g_assert_true(add_to_queue(queue,

6863

(task_context){ .func=dummy_func }));

6864

6865

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6866

g_assert_false(quit_now);

6867

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

6868

g_assert_false(string_set_contains(cancelled_filenames,

6869

question_filename));

6870

}

6871

6872

static

6873

void test_run_queue_skips_cancelled_filenames(__attribute__((unused))

6874

test_fixture *fixture,

6875

__attribute__((unused))

6876

gconstpointer

6877

user_data){

6878

__attribute__((cleanup(cleanup_queue)))

6879

task_queue *queue = create_queue();

6880

g_assert_nonnull(queue);

6881

__attribute__((cleanup(string_set_clear)))

6882

string_set cancelled_filenames = {};

6883

bool quit_now = false;

6884

int pipefds[2];

6885

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

6886

__attribute__((cleanup(cleanup_close)))

6887

const int read_pipe = pipefds[0];

6888

g_assert_cmpint(close(pipefds[1]), ==, 0);

6889

const char question_filename[] = "/nonexistent/question_filename";

6890

g_assert_true(string_set_add(&cancelled_filenames,

6891

question_filename));

6892

__attribute__((nonnull))

6893

void quit_func(const task_context task,

6894

__attribute__((unused)) task_queue *const q){

6895

g_assert_nonnull(task.quit_now);

6896

*task.quit_now = true;

6897

}

6898

task_context task = {

6899

.func=quit_func,

6900

.question_filename=strdup(question_filename),

6901

.quit_now=&quit_now,

6902

.fd=read_pipe,

6903

};

6904

g_assert_nonnull(task.question_filename);

6905

6906

g_assert_true(add_to_queue(queue, task));

6907

6908

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6909

g_assert_false(quit_now);

6910

6911

/* read_pipe should be closed already */

6912

errno = 0;

6913

bool read_pipe_closed = (close(read_pipe) == -1);

6914

read_pipe_closed &= (errno == EBADF);

6915

g_assert_true(read_pipe_closed);

6916

}

6917

6918

static void test_run_queue_one_task(__attribute__((unused))

6919

test_fixture *fixture,

6920

__attribute__((unused))

6921

gconstpointer user_data){

6922

__attribute__((cleanup(cleanup_queue)))

6923

task_queue *queue = create_queue();

6924

g_assert_nonnull(queue);

6925

__attribute__((cleanup(string_set_clear)))

6926

string_set cancelled_filenames = {};

6927

bool quit_now = false;

6928

6929

__attribute__((nonnull))

6930

void next_run_func(__attribute__((unused))

6931

const task_context task,

6932

task_queue *const q){

6933

q->next_run = 1;

6934

}

6935

6936

task_context task = {

6937

.func=next_run_func,

6938

};

6939

g_assert_true(add_to_queue(queue, task));

6940

6941

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6942

g_assert_cmpuint((unsigned int)(queue->next_run), ==, 1);

6943

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

6944

}

6945

6946

static void test_run_queue_two_tasks(__attribute__((unused))

6947

test_fixture *fixture,

6948

__attribute__((unused))

6949

gconstpointer user_data){

6950

__attribute__((cleanup(cleanup_queue)))

6951

task_queue *queue = create_queue();

6952

g_assert_nonnull(queue);

6953

queue->next_run = 1;

6954

__attribute__((cleanup(string_set_clear)))

6955

string_set cancelled_filenames = {};

6956

bool quit_now = false;

6957

bool mandos_client_exited = false;

6958

6959

__attribute__((nonnull))

6960

void next_run_func(__attribute__((unused))

6961

const task_context task,

6962

task_queue *const q){

6963

q->next_run = 1;

6964

}

6965

6966

__attribute__((nonnull))

6967

void exited_func(const task_context task,

6968

__attribute__((unused)) task_queue *const q){

6969

*task.mandos_client_exited = true;

6970

}

6971

6972

task_context task1 = {

6973

.func=next_run_func,

6974

};

6975

g_assert_true(add_to_queue(queue, task1));

6976

6977

task_context task2 = {

6978

.func=exited_func,

6979

.mandos_client_exited=&mandos_client_exited,

6980

};

6981

g_assert_true(add_to_queue(queue, task2));

6982

6983

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6984

g_assert_false(quit_now);

6985

g_assert_cmpuint((unsigned int)(queue->next_run), ==, 1);

6986

g_assert_true(mandos_client_exited);

6987

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

6988

}

6989

6990

static void test_run_queue_two_tasks_quit(__attribute__((unused))

6991

test_fixture *fixture,

6992

__attribute__((unused))

6993

gconstpointer user_data){

6994

__attribute__((cleanup(cleanup_queue)))

6995

task_queue *queue = create_queue();

6996

g_assert_nonnull(queue);

6997

__attribute__((cleanup(string_set_clear)))

6998

string_set cancelled_filenames = {};

6999

bool quit_now = false;

7000

bool mandos_client_exited = false;

7001

bool password_is_read = false;

7002

7003

__attribute__((nonnull))

7004

void set_exited_func(const task_context task,

7005

__attribute__((unused)) task_queue *const q){

7006

*task.mandos_client_exited = true;

7007

*task.quit_now = true;

7008

}

7009

task_context task1 = {

7010

.func=set_exited_func,

7011

.quit_now=&quit_now,

7012

.mandos_client_exited=&mandos_client_exited,

7013

};

7014

g_assert_true(add_to_queue(queue, task1));

7015

7016

__attribute__((nonnull))

7017

void set_read_func(const task_context task,

7018

__attribute__((unused)) task_queue *const q){

7019

*task.quit_now = true;

7020

*task.password_is_read = true;

7021

}

7022

task_context task2 = {

7023

.func=set_read_func,

7024

.quit_now=&quit_now,

7025

.password_is_read=&password_is_read,

7026

};

7027

g_assert_true(add_to_queue(queue, task2));

7028

7029

g_assert_false(run_queue(&queue, &cancelled_filenames, &quit_now));

7030

g_assert_true(quit_now);

7031

g_assert_true(mandos_client_exited xor password_is_read);

7032

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

7033

}

7034

7035

static void test_run_queue_two_tasks_cleanup(__attribute__((unused))

7036

test_fixture *fixture,

7037

__attribute__((unused))

7038

gconstpointer user_data){

7039

__attribute__((cleanup(cleanup_queue)))

7040

task_queue *queue = create_queue();

7041

g_assert_nonnull(queue);

7042

__attribute__((cleanup(string_set_clear)))

7043

string_set cancelled_filenames = {};

7044

int pipefds[2];

7045

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

7046

__attribute__((cleanup(cleanup_close)))

7047

const int read_pipe = pipefds[0];

7048

__attribute__((cleanup(cleanup_close)))

7049

const int write_pipe = pipefds[1];

7050

bool quit_now = false;

7051

7052

__attribute__((nonnull))

7053

void read_func(const task_context task,

7054

__attribute__((unused)) task_queue *const q){

7055

*task.quit_now = true;

7056

}

7057

task_context task1 = {

7058

.func=read_func,

7059

.quit_now=&quit_now,

7060

.fd=read_pipe,

7061

};

7062

g_assert_true(add_to_queue(queue, task1));

7063

7064

__attribute__((nonnull))

7065

void write_func(const task_context task,

7066

__attribute__((unused)) task_queue *const q){

7067

*task.quit_now = true;

7068

}

7069

task_context task2 = {

7070

.func=write_func,

7071

.quit_now=&quit_now,

7072

.fd=write_pipe,

7073

};

7074

g_assert_true(add_to_queue(queue, task2));

7075

7076

g_assert_false(run_queue(&queue, &cancelled_filenames, &quit_now));

7077

g_assert_true(quit_now);

7078

7079

/* Either read_pipe or write_pipe should be closed already */

7080

errno = 0;

7081

bool close_read_pipe = (close(read_pipe) == -1);

7082

close_read_pipe &= (errno == EBADF);

7083

errno = 0;

7084

bool close_write_pipe = (close(write_pipe) == -1);

7085

close_write_pipe &= (errno == EBADF);

7086

g_assert_true(close_read_pipe xor close_write_pipe);

7087

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

7088

}

7089

7090

static void test_setup_signal_handler(__attribute__((unused))

7091

test_fixture *fixture,

7092

__attribute__((unused))

7093

gconstpointer user_data){

7094

/* Save current SIGCHLD action, whatever it is */

7095

struct sigaction expected_sigchld_action;

7096

g_assert_cmpint(sigaction(SIGCHLD, NULL, &expected_sigchld_action),

7097

==, 0);

7098

7099

/* Act; i.e. run the setup_signal_handler() function */

7100

struct sigaction actual_old_sigchld_action;

7101

g_assert_true(setup_signal_handler(&actual_old_sigchld_action));

7102

7103

/* Check that the function correctly set "actual_old_sigchld_action"

7104

to the same values as the previously saved

7105

"expected_sigchld_action" */

7106

/* Check member sa_handler */

7107

g_assert_true(actual_old_sigchld_action.sa_handler

7108

== expected_sigchld_action.sa_handler);

7109

/* Check member sa_mask */

7110

for(int signum = 1; signum < NSIG; signum++){

7111

const int expected_old_block_state

7112

= sigismember(&expected_sigchld_action.sa_mask, signum);

7113

g_assert_cmpint(expected_old_block_state, >=, 0);

7114

const int actual_old_block_state

7115

= sigismember(&actual_old_sigchld_action.sa_mask, signum);

7116

g_assert_cmpint(actual_old_block_state, >=, 0);

7117

g_assert_cmpint(actual_old_block_state,

7118

==, expected_old_block_state);

7119

}

7120

/* Check member sa_flags */

7121

g_assert_true((actual_old_sigchld_action.sa_flags

7122

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))

7123

== (expected_sigchld_action.sa_flags

7124

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART)));

7125

7126

/* Retrieve the current signal handler for SIGCHLD as set by

7127

setup_signal_handler() */

7128

struct sigaction actual_new_sigchld_action;

7129

g_assert_cmpint(sigaction(SIGCHLD, NULL,

7130

&actual_new_sigchld_action), ==, 0);

7131

/* Check that the signal handler (member sa_handler) is correctly

7132

set to the "handle_sigchld" function */

7133

g_assert_true(actual_new_sigchld_action.sa_handler != SIG_DFL);

7134

g_assert_true(actual_new_sigchld_action.sa_handler != SIG_IGN);

7135

g_assert_true(actual_new_sigchld_action.sa_handler

7136

== handle_sigchld);

7137

/* Check (in member sa_mask) that at least a handful of signals are

7138

actually blocked during the signal handler */

7139

for(int signum = 1; signum < NSIG; signum++){

7140

int actual_new_block_state;

7141

switch(signum){

7142

case SIGTERM:

7143

case SIGINT:

7144

case SIGQUIT:

7145

case SIGHUP:

7146

actual_new_block_state

7147

= sigismember(&actual_new_sigchld_action.sa_mask, signum);

7148

g_assert_cmpint(actual_new_block_state, ==, 1);

7149

continue;

7150

case SIGKILL: /* non-blockable */

7151

case SIGSTOP: /* non-blockable */

7152

case SIGCHLD: /* always blocked */

7153

default:

7154

continue;

7155

}

7156

}

7157

/* Check member sa_flags */

7158

g_assert_true((actual_new_sigchld_action.sa_flags

7159

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))

7160

== (SA_NOCLDSTOP | SA_RESTART));

7161

7162

/* Restore signal handler */

7163

g_assert_cmpint(sigaction(SIGCHLD, &expected_sigchld_action, NULL),

7164

==, 0);

7165

}

7166

7167

static void test_restore_signal_handler(__attribute__((unused))

7168

test_fixture *fixture,

7169

__attribute__((unused))

7170

gconstpointer user_data){

7171

/* Save current SIGCHLD action, whatever it is */

7172

struct sigaction expected_sigchld_action;

7173

g_assert_cmpint(sigaction(SIGCHLD, NULL, &expected_sigchld_action),

7174

==, 0);

7175

/* Since we haven't established a signal handler yet, there should

7176

not be one established. But another test may have relied on

7177

restore_signal_handler() to restore the signal handler, and if

7178

restore_signal_handler() is buggy (which we should be prepared

7179

for in this test) the signal handler may not have been restored

7180

properly; check for this: */

7181

g_assert_true(expected_sigchld_action.sa_handler != handle_sigchld);

7182

7183

/* Establish a signal handler */

7184

struct sigaction sigchld_action = {

7185

.sa_handler=handle_sigchld,

7186

.sa_flags=SA_RESTART | SA_NOCLDSTOP,

7187

};

7188

g_assert_cmpint(sigfillset(&sigchld_action.sa_mask), ==, 0);

7189

g_assert_cmpint(sigaction(SIGCHLD, &sigchld_action, NULL), ==, 0);

7190

7191

/* Act; i.e. run the restore_signal_handler() function */

7192

g_assert_true(restore_signal_handler(&expected_sigchld_action));

7193

7194

/* Retrieve the restored signal handler data */

7195

struct sigaction actual_restored_sigchld_action;

7196

g_assert_cmpint(sigaction(SIGCHLD, NULL,

7197

&actual_restored_sigchld_action), ==, 0);

7198

7199

/* Check that the function correctly restored the signal action, as

7200

saved in "actual_restored_sigchld_action", to the same values as

7201

the previously saved "expected_sigchld_action" */

7202

/* Check member sa_handler */

7203

g_assert_true(actual_restored_sigchld_action.sa_handler

7204

== expected_sigchld_action.sa_handler);

7205

/* Check member sa_mask */

7206

for(int signum = 1; signum < NSIG; signum++){

7207

const int expected_old_block_state

7208

= sigismember(&expected_sigchld_action.sa_mask, signum);

7209

g_assert_cmpint(expected_old_block_state, >=, 0);

7210

const int actual_restored_block_state

7211

= sigismember(&actual_restored_sigchld_action.sa_mask, signum);

7212

g_assert_cmpint(actual_restored_block_state, >=, 0);

7213

g_assert_cmpint(actual_restored_block_state,

7214

==, expected_old_block_state);

7215

}

7216

/* Check member sa_flags */

7217

g_assert_true((actual_restored_sigchld_action.sa_flags

7218

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))

7219

== (expected_sigchld_action.sa_flags

7220

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART)));

7221

}

7222

7223

static void test_block_sigchld(__attribute__((unused))

7224

test_fixture *fixture,

7225

__attribute__((unused))

7226

gconstpointer user_data){

7227

/* Save original signal mask */

7228

sigset_t expected_sigmask;

7229

g_assert_cmpint(pthread_sigmask(-1, NULL, &expected_sigmask),

7230

==, 0);

7231

7232

/* Make sure SIGCHLD is unblocked for this test */

7233

sigset_t sigchld_sigmask;

7234

g_assert_cmpint(sigemptyset(&sigchld_sigmask), ==, 0);

7235

g_assert_cmpint(sigaddset(&sigchld_sigmask, SIGCHLD), ==, 0);

7236

g_assert_cmpint(pthread_sigmask(SIG_UNBLOCK, &sigchld_sigmask,

7237

NULL), ==, 0);

7238

7239

/* Act; i.e. run the block_sigchld() function */

7240

sigset_t actual_old_sigmask;

7241

g_assert_true(block_sigchld(&actual_old_sigmask));

7242

7243

/* Check the actual_old_sigmask; it should be the same as the

7244

previously saved signal mask "expected_sigmask". */

7245

for(int signum = 1; signum < NSIG; signum++){

7246

const int expected_old_block_state

7247

= sigismember(&expected_sigmask, signum);

7248

g_assert_cmpint(expected_old_block_state, >=, 0);

7249

const int actual_old_block_state

7250

= sigismember(&actual_old_sigmask, signum);

7251

g_assert_cmpint(actual_old_block_state, >=, 0);

7252

g_assert_cmpint(actual_old_block_state,

7253

==, expected_old_block_state);

7254

}

7255

7256

/* Retrieve the newly set signal mask */

7257

sigset_t actual_sigmask;

7258

g_assert_cmpint(pthread_sigmask(-1, NULL, &actual_sigmask), ==, 0);

7259

7260

/* SIGCHLD should be blocked */

7261

g_assert_cmpint(sigismember(&actual_sigmask, SIGCHLD), ==, 1);

7262

7263

/* Restore signal mask */

7264

g_assert_cmpint(pthread_sigmask(SIG_SETMASK, &expected_sigmask,

7265

NULL), ==, 0);

7266

}

7267

7268

static void test_restore_sigmask(__attribute__((unused))

7269

test_fixture *fixture,

7270

__attribute__((unused))

7271

gconstpointer user_data){

7272

/* Save original signal mask */

7273

sigset_t orig_sigmask;

7274

g_assert_cmpint(pthread_sigmask(-1, NULL, &orig_sigmask), ==, 0);

7275

7276

/* Make sure SIGCHLD is blocked for this test */

7277

sigset_t sigchld_sigmask;

7278

g_assert_cmpint(sigemptyset(&sigchld_sigmask), ==, 0);

7279

g_assert_cmpint(sigaddset(&sigchld_sigmask, SIGCHLD), ==, 0);

7280

g_assert_cmpint(pthread_sigmask(SIG_BLOCK, &sigchld_sigmask,

7281

NULL), ==, 0);

7282

7283

/* Act; i.e. run the restore_sigmask() function */

7284

g_assert_true(restore_sigmask(&orig_sigmask));

7285

7286

/* Retrieve the newly restored signal mask */

7287

sigset_t restored_sigmask;

7288

g_assert_cmpint(pthread_sigmask(-1, NULL, &restored_sigmask),

7289

==, 0);

7290

7291

/* Check the restored_sigmask; it should be the same as the

7292

previously saved signal mask "orig_sigmask". */

7293

for(int signum = 1; signum < NSIG; signum++){

7294

const int orig_block_state = sigismember(&orig_sigmask, signum);

7295

g_assert_cmpint(orig_block_state, >=, 0);

7296

const int restored_block_state = sigismember(&restored_sigmask,

7297

signum);

7298

g_assert_cmpint(restored_block_state, >=, 0);

7299

g_assert_cmpint(restored_block_state, ==, orig_block_state);

7300

}

7301

7302

/* Restore signal mask */

7303

g_assert_cmpint(pthread_sigmask(SIG_SETMASK, &orig_sigmask,

7304

NULL), ==, 0);

7305

}

7306

7307

static void test_parse_arguments_noargs(__attribute__((unused))

7308

test_fixture *fixture,

7309

__attribute__((unused))

7310

gconstpointer user_data){

7311

char *argv[] = {

7312

strdup("prgname"),

7313

NULL };

7314

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7315

7316

char *agent_directory = NULL;

7317

char *helper_directory = NULL;

7318

uid_t user = 0;

7319

gid_t group = 0;

7320

char *mandos_argz = NULL;

7321

size_t mandos_argz_length = 0;

7322

7323

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7324

&helper_directory, &user, &group,

7325

&mandos_argz, &mandos_argz_length));

7326

g_assert_null(agent_directory);

7327

g_assert_null(helper_directory);

7328

g_assert_true(user == 0);

7329

g_assert_true(group == 0);

7330

g_assert_null(mandos_argz);

7331

g_assert_true(mandos_argz_length == 0);

7332

7333

for(char **arg = argv; *arg != NULL; arg++){

7334

free(*arg);

7335

}

7336

}

7337

7338

__attribute__((nonnull))

7339

static bool parse_arguments_devnull(int argc, char *argv[],

7340

const bool exit_failure,

7341

char **agent_directory,

7342

char **helper_directory,

7343

uid_t *const user,

7344

gid_t *const group,

7345

char **mandos_argz,

7346

size_t *mandos_argz_length){

7347

7348

FILE *real_stderr = stderr;

7349

FILE *devnull = fopen("/dev/null", "we");

7350

g_assert_nonnull(devnull);

7351

stderr = devnull;

7352

7353

const bool ret = parse_arguments(argc, argv, exit_failure,

7354

agent_directory,

7355

helper_directory, user, group,

7356

mandos_argz, mandos_argz_length);

7357

const error_t saved_errno = errno;

7358

7359

stderr = real_stderr;

7360

g_assert_cmpint(fclose(devnull), ==, 0);

7361

7362

errno = saved_errno;

7363

7364

return ret;

7365

}

7366

7367

static void test_parse_arguments_invalid(__attribute__((unused))

7368

test_fixture *fixture,

7369

__attribute__((unused))

7370

gconstpointer user_data){

7371

char *argv[] = {

7372

strdup("prgname"),

7373

strdup("--invalid"),

7374

NULL };

7375

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7376

7377

char *agent_directory = NULL;

7378

char *helper_directory = NULL;

7379

uid_t user = 0;

7380

gid_t group = 0;

7381

char *mandos_argz = NULL;

7382

size_t mandos_argz_length = 0;

7383

7384

g_assert_false(parse_arguments_devnull(argc, argv, false,

7385

&agent_directory,

7386

&helper_directory, &user,

7387

&group, &mandos_argz,

7388

&mandos_argz_length));

7389

7390

g_assert_true(errno == EINVAL);

7391

g_assert_null(agent_directory);

7392

g_assert_null(helper_directory);

7393

g_assert_null(mandos_argz);

7394

g_assert_true(mandos_argz_length == 0);

7395

7396

for(char **arg = argv; *arg != NULL; arg++){

7397

free(*arg);

7398

}

7399

}

7400

7401

static void test_parse_arguments_long_dir(__attribute__((unused))

7402

test_fixture *fixture,

7403

__attribute__((unused))

7404

gconstpointer user_data){

7405

char *argv[] = {

7406

strdup("prgname"),

7407

strdup("--agent-directory"),

7408

strdup("/tmp"),

7409

NULL };

7410

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7411

7412

__attribute__((cleanup(cleanup_string)))

7413

char *agent_directory = NULL;

7414

char *helper_directory = NULL;

7415

uid_t user = 0;

7416

gid_t group = 0;

7417

__attribute__((cleanup(cleanup_string)))

7418

char *mandos_argz = NULL;

7419

size_t mandos_argz_length = 0;

7420

7421

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7422

&helper_directory, &user, &group,

7423

&mandos_argz, &mandos_argz_length));

7424

7425

g_assert_cmpstr(agent_directory, ==, "/tmp");

7426

g_assert_null(helper_directory);

7427

g_assert_true(user == 0);

7428

g_assert_true(group == 0);

7429

g_assert_null(mandos_argz);

7430

g_assert_true(mandos_argz_length == 0);

7431

7432

for(char **arg = argv; *arg != NULL; arg++){

7433

free(*arg);

7434

}

7435

}

7436

7437

static void test_parse_arguments_short_dir(__attribute__((unused))

7438

test_fixture *fixture,

7439

__attribute__((unused))

7440

gconstpointer user_data){

7441

char *argv[] = {

7442

strdup("prgname"),

7443

strdup("-d"),

7444

strdup("/tmp"),

7445

NULL };

7446

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7447

7448

__attribute__((cleanup(cleanup_string)))

7449

char *agent_directory = NULL;

7450

char *helper_directory = NULL;

7451

uid_t user = 0;

7452

gid_t group = 0;

7453

__attribute__((cleanup(cleanup_string)))

7454

char *mandos_argz = NULL;

7455

size_t mandos_argz_length = 0;

7456

7457

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7458

&helper_directory, &user, &group,

7459

&mandos_argz, &mandos_argz_length));

7460

7461

g_assert_cmpstr(agent_directory, ==, "/tmp");

7462

g_assert_null(helper_directory);

7463

g_assert_true(user == 0);

7464

g_assert_true(group == 0);

7465

g_assert_null(mandos_argz);

7466

g_assert_true(mandos_argz_length == 0);

7467

7468

for(char **arg = argv; *arg != NULL; arg++){

7469

free(*arg);

7470

}

7471

}

7472

7473

static

7474

void test_parse_arguments_helper_directory(__attribute__((unused))

7475

test_fixture *fixture,

7476

__attribute__((unused))

7477

gconstpointer user_data){

7478

char *argv[] = {

7479

strdup("prgname"),

7480

strdup("--helper-directory"),

7481

strdup("/tmp"),

7482

NULL };

7483

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7484

7485

char *agent_directory = NULL;

7486

__attribute__((cleanup(cleanup_string)))

7487

char *helper_directory = NULL;

7488

uid_t user = 0;

7489

gid_t group = 0;

7490

__attribute__((cleanup(cleanup_string)))

7491

char *mandos_argz = NULL;

7492

size_t mandos_argz_length = 0;

7493

7494

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7495

&helper_directory, &user, &group,

7496

&mandos_argz, &mandos_argz_length));

7497

7498

g_assert_cmpstr(helper_directory, ==, "/tmp");

7499

g_assert_null(agent_directory);

7500

g_assert_true(user == 0);

7501

g_assert_true(group == 0);

7502

g_assert_null(mandos_argz);

7503

g_assert_true(mandos_argz_length == 0);

7504

7505

for(char **arg = argv; *arg != NULL; arg++){

7506

free(*arg);

7507

}

7508

}

7509

7510

static

7511

void test_parse_arguments_plugin_helper_dir(__attribute__((unused))

7512

test_fixture *fixture,

7513

__attribute__((unused))

7514

gconstpointer user_data){

7515

char *argv[] = {

7516

strdup("prgname"),

7517

strdup("--plugin-helper-dir"),

7518

strdup("/tmp"),

7519

NULL };

7520

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7521

7522

char *agent_directory = NULL;

7523

__attribute__((cleanup(cleanup_string)))

7524

char *helper_directory = NULL;

7525

uid_t user = 0;

7526

gid_t group = 0;

7527

__attribute__((cleanup(cleanup_string)))

7528

char *mandos_argz = NULL;

7529

size_t mandos_argz_length = 0;

7530

7531

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7532

&helper_directory, &user, &group,

7533

&mandos_argz, &mandos_argz_length));

7534

7535

g_assert_cmpstr(helper_directory, ==, "/tmp");

7536

g_assert_null(agent_directory);

7537

g_assert_true(user == 0);

7538

g_assert_true(group == 0);

7539

g_assert_null(mandos_argz);

7540

g_assert_true(mandos_argz_length == 0);

7541

7542

for(char **arg = argv; *arg != NULL; arg++){

7543

free(*arg);

7544

}

7545

}

7546

7547

static void test_parse_arguments_user(__attribute__((unused))

7548

test_fixture *fixture,

7549

__attribute__((unused))

7550

gconstpointer user_data){

7551

char *argv[] = {

7552

strdup("prgname"),

7553

strdup("--user"),

7554

strdup("1000"),

7555

NULL };

7556

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7557

7558

char *agent_directory = NULL;

7559

__attribute__((cleanup(cleanup_string)))

7560

char *helper_directory = NULL;

7561

uid_t user = 0;

7562

gid_t group = 0;

7563

__attribute__((cleanup(cleanup_string)))

7564

char *mandos_argz = NULL;

7565

size_t mandos_argz_length = 0;

7566

7567

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7568

&helper_directory, &user, &group,

7569

&mandos_argz, &mandos_argz_length));

7570

7571

g_assert_null(helper_directory);

7572

g_assert_null(agent_directory);

7573

g_assert_cmpuint((unsigned int)user, ==, 1000);

7574

g_assert_true(group == 0);

7575

g_assert_null(mandos_argz);

7576

g_assert_true(mandos_argz_length == 0);

7577

7578

for(char **arg = argv; *arg != NULL; arg++){

7579

free(*arg);

7580

}

7581

}

7582

7583

static void test_parse_arguments_user_invalid(__attribute__((unused))

7584

test_fixture *fixture,

7585

__attribute__((unused))

7586

gconstpointer

7587

user_data){

7588

char *argv[] = {

7589

strdup("prgname"),

7590

strdup("--user"),

7591

strdup("invalid"),

7592

NULL };

7593

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7594

7595

char *agent_directory = NULL;

7596

__attribute__((cleanup(cleanup_string)))

7597

char *helper_directory = NULL;

7598

uid_t user = 0;

7599

gid_t group = 0;

7600

__attribute__((cleanup(cleanup_string)))

7601

char *mandos_argz = NULL;

7602

size_t mandos_argz_length = 0;

7603

7604

g_assert_false(parse_arguments_devnull(argc, argv, false,

7605

&agent_directory,

7606

&helper_directory, &user,

7607

&group, &mandos_argz,

7608

&mandos_argz_length));

7609

7610

g_assert_null(helper_directory);

7611

g_assert_null(agent_directory);

7612

g_assert_cmpuint((unsigned int)user, ==, 0);

7613

g_assert_true(group == 0);

7614

g_assert_null(mandos_argz);

7615

g_assert_true(mandos_argz_length == 0);

7616

7617

for(char **arg = argv; *arg != NULL; arg++){

7618

free(*arg);

7619

}

7620

}

7621

7622

static

7623

void test_parse_arguments_user_zero_invalid(__attribute__((unused))

7624

test_fixture *fixture,

7625

__attribute__((unused))

7626

gconstpointer user_data){

7627

char *argv[] = {

7628

strdup("prgname"),

7629

strdup("--user"),

7630

strdup("0"),

7631

NULL };

7632

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7633

7634

char *agent_directory = NULL;

7635

__attribute__((cleanup(cleanup_string)))

7636

char *helper_directory = NULL;

7637

uid_t user = 0;

7638

gid_t group = 0;

7639

__attribute__((cleanup(cleanup_string)))

7640

char *mandos_argz = NULL;

7641

size_t mandos_argz_length = 0;

7642

7643

g_assert_false(parse_arguments_devnull(argc, argv, false,

7644

&agent_directory,

7645

&helper_directory, &user,

7646

&group, &mandos_argz,

7647

&mandos_argz_length));

7648

7649

g_assert_null(helper_directory);

7650

g_assert_null(agent_directory);

7651

g_assert_cmpuint((unsigned int)user, ==, 0);

7652

g_assert_true(group == 0);

7653

g_assert_null(mandos_argz);

7654

g_assert_true(mandos_argz_length == 0);

7655

7656

for(char **arg = argv; *arg != NULL; arg++){

7657

free(*arg);

7658

}

7659

}

7660

7661

static void test_parse_arguments_group(__attribute__((unused))

7662

test_fixture *fixture,

7663

__attribute__((unused))

7664

gconstpointer user_data){

7665

char *argv[] = {

7666

strdup("prgname"),

7667

strdup("--group"),

7668

strdup("1000"),

7669

NULL };

7670

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7671

7672

char *agent_directory = NULL;

7673

__attribute__((cleanup(cleanup_string)))

7674

char *helper_directory = NULL;

7675

uid_t user = 0;

7676

gid_t group = 0;

7677

__attribute__((cleanup(cleanup_string)))

7678

char *mandos_argz = NULL;

7679

size_t mandos_argz_length = 0;

7680

7681

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7682

&helper_directory, &user, &group,

7683

&mandos_argz, &mandos_argz_length));

7684

7685

g_assert_null(helper_directory);

7686

g_assert_null(agent_directory);

7687

g_assert_true(user == 0);

7688

g_assert_cmpuint((unsigned int)group, ==, 1000);

7689

g_assert_null(mandos_argz);

7690

g_assert_true(mandos_argz_length == 0);

7691

7692

for(char **arg = argv; *arg != NULL; arg++){

7693

free(*arg);

7694

}

7695

}

7696

7697

static void test_parse_arguments_group_invalid(__attribute__((unused))

7698

test_fixture *fixture,

7699

__attribute__((unused))

7700

gconstpointer

7701

user_data){

7702

char *argv[] = {

7703

strdup("prgname"),

7704

strdup("--group"),

7705

strdup("invalid"),

7706

NULL };

7707

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7708

7709

char *agent_directory = NULL;

7710

__attribute__((cleanup(cleanup_string)))

7711

char *helper_directory = NULL;

7712

uid_t user = 0;

7713

gid_t group = 0;

7714

__attribute__((cleanup(cleanup_string)))

7715

char *mandos_argz = NULL;

7716

size_t mandos_argz_length = 0;

7717

7718

g_assert_false(parse_arguments_devnull(argc, argv, false,

7719

&agent_directory,

7720

&helper_directory, &user,

7721

&group, &mandos_argz,

7722

&mandos_argz_length));

7723

7724

g_assert_null(helper_directory);

7725

g_assert_null(agent_directory);

7726

g_assert_true(user == 0);

7727

g_assert_true(group == 0);

7728

g_assert_null(mandos_argz);

7729

g_assert_true(mandos_argz_length == 0);

7730

7731

for(char **arg = argv; *arg != NULL; arg++){

7732

free(*arg);

7733

}

7734

}

7735

7736

static

7737

void test_parse_arguments_group_zero_invalid(__attribute__((unused))

7738

test_fixture *fixture,

7739

__attribute__((unused))

7740

gconstpointer user_data){

7741

char *argv[] = {

7742

strdup("prgname"),

7743

strdup("--group"),

7744

strdup("0"),

7745

NULL };

7746

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7747

7748

char *agent_directory = NULL;

7749

__attribute__((cleanup(cleanup_string)))

7750

char *helper_directory = NULL;

7751

uid_t user = 0;

7752

gid_t group = 0;

7753

__attribute__((cleanup(cleanup_string)))

7754

char *mandos_argz = NULL;

7755

size_t mandos_argz_length = 0;

7756

7757

g_assert_false(parse_arguments_devnull(argc, argv, false,

7758

&agent_directory,

7759

&helper_directory, &user,

7760

&group, &mandos_argz,

7761

&mandos_argz_length));

7762

7763

g_assert_null(helper_directory);

7764

g_assert_null(agent_directory);

7765

g_assert_cmpuint((unsigned int)group, ==, 0);

7766

g_assert_true(group == 0);

7767

g_assert_null(mandos_argz);

7768

g_assert_true(mandos_argz_length == 0);

7769

7770

for(char **arg = argv; *arg != NULL; arg++){

7771

free(*arg);

7772

}

7773

}

7774

7775

static void test_parse_arguments_mandos_noargs(__attribute__((unused))

7776

test_fixture *fixture,

7777

__attribute__((unused))

7778

gconstpointer

7779

user_data){

7780

char *argv[] = {

7781

strdup("prgname"),

7782

strdup("mandos-client"),

7783

NULL };

7784

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7785

7786

__attribute__((cleanup(cleanup_string)))

7787

char *agent_directory = NULL;

7788

__attribute__((cleanup(cleanup_string)))

7789

char *helper_directory = NULL;

7790

uid_t user = 0;

7791

gid_t group = 0;

7792

__attribute__((cleanup(cleanup_string)))

7793

char *mandos_argz = NULL;

7794

size_t mandos_argz_length = 0;

7795

7796

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7797

&helper_directory, &user, &group,

7798

&mandos_argz, &mandos_argz_length));

7799

7800

g_assert_null(agent_directory);

7801

g_assert_null(helper_directory);

7802

g_assert_true(user == 0);

7803

g_assert_true(group == 0);

7804

g_assert_cmpstr(mandos_argz, ==, "mandos-client");

7805

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7806

mandos_argz_length),

7807

==, 1);

7808

7809

for(char **arg = argv; *arg != NULL; arg++){

7810

free(*arg);

7811

}

7812

}

7813

7814

static void test_parse_arguments_mandos_args(__attribute__((unused))

7815

test_fixture *fixture,

7816

__attribute__((unused))

7817

gconstpointer user_data){

7818

char *argv[] = {

7819

strdup("prgname"),

7820

strdup("mandos-client"),

7821

strdup("one"),

7822

strdup("two"),

7823

strdup("three"),

7824

NULL };

7825

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7826

7827

__attribute__((cleanup(cleanup_string)))

7828

char *agent_directory = NULL;

7829

__attribute__((cleanup(cleanup_string)))

7830

char *helper_directory = NULL;

7831

uid_t user = 0;

7832

gid_t group = 0;

7833

__attribute__((cleanup(cleanup_string)))

7834

char *mandos_argz = NULL;

7835

size_t mandos_argz_length = 0;

7836

7837

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7838

&helper_directory, &user, &group,

7839

&mandos_argz, &mandos_argz_length));

7840

7841

g_assert_null(agent_directory);

7842

g_assert_null(helper_directory);

7843

g_assert_true(user == 0);

7844

g_assert_true(group == 0);

7845

char *marg = mandos_argz;

7846

g_assert_cmpstr(marg, ==, "mandos-client");

7847

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7848

g_assert_cmpstr(marg, ==, "one");

7849

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7850

g_assert_cmpstr(marg, ==, "two");

7851

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7852

g_assert_cmpstr(marg, ==, "three");

7853

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7854

mandos_argz_length),

7855

==, 4);

7856

7857

for(char **arg = argv; *arg != NULL; arg++){

7858

free(*arg);

7859

}

7860

}

7861

7862

static void test_parse_arguments_all_args(__attribute__((unused))

7863

test_fixture *fixture,

7864

__attribute__((unused))

7865

gconstpointer user_data){

7866

char *argv[] = {

7867

strdup("prgname"),

7868

strdup("--agent-directory"),

7869

strdup("/tmp"),

7870

strdup("--helper-directory"),

7871

strdup("/var/tmp"),

7872

strdup("--user"),

7873

strdup("1"),

7874

strdup("--group"),

7875

strdup("2"),

7876

strdup("mandos-client"),

7877

strdup("one"),

7878

strdup("two"),

7879

strdup("three"),

7880

NULL };

7881

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7882

7883

__attribute__((cleanup(cleanup_string)))

7884

char *agent_directory = NULL;

7885

__attribute__((cleanup(cleanup_string)))

7886

char *helper_directory = NULL;

7887

uid_t user = 0;

7888

gid_t group = 0;

7889

__attribute__((cleanup(cleanup_string)))

7890

char *mandos_argz = NULL;

7891

size_t mandos_argz_length = 0;

7892

7893

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7894

&helper_directory, &user, &group,

7895

&mandos_argz, &mandos_argz_length));

7896

7897

g_assert_cmpstr(agent_directory, ==, "/tmp");

7898

g_assert_cmpstr(helper_directory, ==, "/var/tmp");

7899

g_assert_true(user == 1);

7900

g_assert_true(group == 2);

7901

char *marg = mandos_argz;

7902

g_assert_cmpstr(marg, ==, "mandos-client");

7903

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7904

g_assert_cmpstr(marg, ==, "one");

7905

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7906

g_assert_cmpstr(marg, ==, "two");

7907

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7908

g_assert_cmpstr(marg, ==, "three");

7909

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7910

mandos_argz_length),

7911

==, 4);

7912

7913

for(char **arg = argv; *arg != NULL; arg++){

7914

free(*arg);

7915

}

7916

}

7917

7918

static void test_parse_arguments_mixed(__attribute__((unused))

7919

test_fixture *fixture,

7920

__attribute__((unused))

7921

gconstpointer user_data){

7922

char *argv[] = {

7923

strdup("prgname"),

7924

strdup("mandos-client"),

7925

strdup("--user"),

7926

strdup("1"),

7927

strdup("one"),

7928

strdup("--agent-directory"),

7929

strdup("/tmp"),

7930

strdup("two"),

7931

strdup("three"),

7932

strdup("--helper-directory=/var/tmp"),

7933

NULL };

7934

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7935

7936

__attribute__((cleanup(cleanup_string)))

7937

char *agent_directory = NULL;

7938

__attribute__((cleanup(cleanup_string)))

7939

char *helper_directory = NULL;

7940

uid_t user = 0;

7941

gid_t group = 0;

7942

__attribute__((cleanup(cleanup_string)))

7943

char *mandos_argz = NULL;

7944

size_t mandos_argz_length = 0;

7945

7946

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7947

&helper_directory, &user, &group,

7948

&mandos_argz, &mandos_argz_length));

7949

7950

g_assert_cmpstr(agent_directory, ==, "/tmp");

7951

g_assert_cmpstr(helper_directory, ==, "/var/tmp");

7952

g_assert_true(user == 1);

7953

g_assert_true(group == 0);

7954

char *marg = mandos_argz;

7955

g_assert_cmpstr(marg, ==, "mandos-client");

7956

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7957

g_assert_cmpstr(marg, ==, "one");

7958

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7959

g_assert_cmpstr(marg, ==, "two");

7960

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7961

g_assert_cmpstr(marg, ==, "three");

7962

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7963

mandos_argz_length),

7964

==, 4);

7965

7966

for(char **arg = argv; *arg != NULL; arg++){

7967

free(*arg);

7968

}

7969

}

7970

7971

/* End of tests section */

7972

7973

/* Test boilerplate section; New tests should be added to the test

7974

suite definition here, in the "run_tests" function.

7975

7976

Finally, this section also contains the should_only_run_tests()

7977

function used by main() for deciding if tests should be run or to

7978

start normally. */

7979

7980

__attribute__((cold))

7981

static bool run_tests(int argc, char *argv[]){

7982

g_test_init(&argc, &argv, NULL);

7983

7984

/* A macro to add a test with no setup or teardown functions */

7985

#define test_add(testpath, testfunc) \

7986

do { \

7987

g_test_add((testpath), test_fixture, NULL, NULL, \

7988

(testfunc), NULL); \

7989

} while(false)

7990

7991

/* Test the signal-related functions first, since some other tests

7992

depend on these functions in their setups and teardowns */

7993

test_add("/signal-handling/setup", test_setup_signal_handler);

7994

test_add("/signal-handling/restore", test_restore_signal_handler);

7995

test_add("/signal-handling/block", test_block_sigchld);

7996

test_add("/signal-handling/restore-sigmask", test_restore_sigmask);

7997

7998

/* Regular non-signal-related tests; these use no setups or

7999

teardowns */

8000

test_add("/parse_arguments/noargs", test_parse_arguments_noargs);

8001

test_add("/parse_arguments/invalid", test_parse_arguments_invalid);

8002

test_add("/parse_arguments/long-dir",

8003

test_parse_arguments_long_dir);

8004

test_add("/parse_arguments/short-dir",

8005

test_parse_arguments_short_dir);

8006

test_add("/parse_arguments/helper-directory",

8007

test_parse_arguments_helper_directory);

8008

test_add("/parse_arguments/plugin-helper-dir",

8009

test_parse_arguments_plugin_helper_dir);

8010

test_add("/parse_arguments/user", test_parse_arguments_user);

8011

test_add("/parse_arguments/user-invalid",

8012

test_parse_arguments_user_invalid);

8013

test_add("/parse_arguments/user-zero-invalid",

8014

test_parse_arguments_user_zero_invalid);

8015

test_add("/parse_arguments/group", test_parse_arguments_group);

8016

test_add("/parse_arguments/group-invalid",

8017

test_parse_arguments_group_invalid);

8018

test_add("/parse_arguments/group-zero-invalid",

8019

test_parse_arguments_group_zero_invalid);

8020

test_add("/parse_arguments/mandos-noargs",

8021

test_parse_arguments_mandos_noargs);

8022

test_add("/parse_arguments/mandos-args",

8023

test_parse_arguments_mandos_args);

8024

test_add("/parse_arguments/all-args",

8025

test_parse_arguments_all_args);

8026

test_add("/parse_arguments/mixed", test_parse_arguments_mixed);

8027

test_add("/queue/create", test_create_queue);

8028

test_add("/queue/add", test_add_to_queue);

8029

test_add("/queue/add/overflow", test_add_to_queue_overflow);

8030

test_add("/queue/has_question/empty",

8031

test_queue_has_question_empty);

8032

test_add("/queue/has_question/false",

8033

test_queue_has_question_false);

8034

test_add("/queue/has_question/true", test_queue_has_question_true);

8035

test_add("/queue/has_question/false2",

8036

test_queue_has_question_false2);

8037

test_add("/queue/has_question/true2",

8038

test_queue_has_question_true2);

8039

test_add("/buffer/cleanup", test_cleanup_buffer);

8040

test_add("/string_set/net-set-contains-nothing",

8041

test_string_set_new_set_contains_nothing);

8042

test_add("/string_set/with-added-string-contains-it",

8043

test_string_set_with_added_string_contains_it);

8044

test_add("/string_set/cleared-does-not-contain-string",

8045

test_string_set_cleared_does_not_contain_str);

8046

test_add("/string_set/swap/one-with-empty",

8047

test_string_set_swap_one_with_empty);

8048

test_add("/string_set/swap/empty-with-one",

8049

test_string_set_swap_empty_with_one);

8050

test_add("/string_set/swap/one-with-one",

8051

test_string_set_swap_one_with_one);

8052

8053

/* A macro to add a test using the setup and teardown functions */

8054

#define test_add_st(path, func) \

8055

do { \

8056

g_test_add((path), test_fixture, NULL, test_setup, (func), \

8057

test_teardown); \

8058

} while(false)

8059

8060

/* Signal-related tests; these use setups and teardowns which

8061

establish, during each test run, a signal handler for, and a

8062

signal mask blocking, the SIGCHLD signal, just like main() */

8063

test_add_st("/wait_for_event/timeout", test_wait_for_event_timeout);

8064

test_add_st("/wait_for_event/event", test_wait_for_event_event);

8065

test_add_st("/wait_for_event/sigchld", test_wait_for_event_sigchld);

8066

test_add_st("/run_queue/zeroes-next-run",

8067

test_run_queue_zeroes_next_run);

8068

test_add_st("/run_queue/clears-cancelled_filenames",

8069

test_run_queue_clears_cancelled_filenames);

8070

test_add_st("/run_queue/skips-cancelled-filenames",

8071

test_run_queue_skips_cancelled_filenames);

8072

test_add_st("/run_queue/one-task", test_run_queue_one_task);

8073

test_add_st("/run_queue/two-tasks", test_run_queue_two_tasks);

8074

test_add_st("/run_queue/two-tasks/quit",

8075

test_run_queue_two_tasks_quit);

8076

test_add_st("/run_queue/two-tasks-cleanup",

8077

test_run_queue_two_tasks_cleanup);

8078

test_add_st("/task-creators/start_mandos_client",

8079

test_start_mandos_client);

8080

test_add_st("/task-creators/start_mandos_client/execv",

8081

test_start_mandos_client_execv);

8082

test_add_st("/task-creators/start_mandos_client/suid/euid",

8083

test_start_mandos_client_suid_euid);

8084

test_add_st("/task-creators/start_mandos_client/suid/egid",

8085

test_start_mandos_client_suid_egid);

8086

test_add_st("/task-creators/start_mandos_client/suid/ruid",

8087

test_start_mandos_client_suid_ruid);

8088

test_add_st("/task-creators/start_mandos_client/suid/rgid",

8089

test_start_mandos_client_suid_rgid);

8090

test_add_st("/task-creators/start_mandos_client/read",

8091

test_start_mandos_client_read);

8092

test_add_st("/task-creators/start_mandos_client/helper-directory",

8093

test_start_mandos_client_helper_directory);

8094

test_add_st("/task-creators/start_mandos_client/sigmask",

8095

test_start_mandos_client_sigmask);

8096

test_add_st("/task/wait_for_mandos_client_exit/badpid",

8097

test_wait_for_mandos_client_exit_badpid);

8098

test_add_st("/task/wait_for_mandos_client_exit/noexit",

8099

test_wait_for_mandos_client_exit_noexit);

8100

test_add_st("/task/wait_for_mandos_client_exit/success",

8101

test_wait_for_mandos_client_exit_success);

8102

test_add_st("/task/wait_for_mandos_client_exit/failure",

8103

test_wait_for_mandos_client_exit_failure);

8104

test_add_st("/task/wait_for_mandos_client_exit/killed",

8105

test_wait_for_mandos_client_exit_killed);

8106

test_add_st("/task/read_mandos_client_output/readerror",

8107

test_read_mandos_client_output_readerror);

8108

test_add_st("/task/read_mandos_client_output/nodata",

8109

test_read_mandos_client_output_nodata);

8110

test_add_st("/task/read_mandos_client_output/eof",

8111

test_read_mandos_client_output_eof);

8112

test_add_st("/task/read_mandos_client_output/once",

8113

test_read_mandos_client_output_once);

8114

test_add_st("/task/read_mandos_client_output/malloc",

8115

test_read_mandos_client_output_malloc);

8116

test_add_st("/task/read_mandos_client_output/append",

8117

test_read_mandos_client_output_append);

8118

test_add_st("/task-creators/add_inotify_dir_watch",

8119

test_add_inotify_dir_watch);

8120

test_add_st("/task-creators/add_inotify_dir_watch/fail",

8121

test_add_inotify_dir_watch_fail);

8122

test_add_st("/task-creators/add_inotify_dir_watch/not-a-directory",

8123

test_add_inotify_dir_watch_nondir);

8124

test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",

8125

test_add_inotify_dir_watch_EAGAIN);

8126

test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",

8127

test_add_inotify_dir_watch_IN_CLOSE_WRITE);

8128

test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_TO",

8129

test_add_inotify_dir_watch_IN_MOVED_TO);

8130

test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_FROM",

8131

test_add_inotify_dir_watch_IN_MOVED_FROM);

8132

test_add_st("/task-creators/add_inotify_dir_watch/IN_EXCL_UNLINK",

8133

test_add_inotify_dir_watch_IN_EXCL_UNLINK);

8134

test_add_st("/task-creators/add_inotify_dir_watch/IN_DELETE",

8135

test_add_inotify_dir_watch_IN_DELETE);

8136

test_add_st("/task/read_inotify_event/readerror",

8137

test_read_inotify_event_readerror);

8138

test_add_st("/task/read_inotify_event/bad-epoll",

8139

test_read_inotify_event_bad_epoll);

8140

test_add_st("/task/read_inotify_event/nodata",

8141

test_read_inotify_event_nodata);

8142

test_add_st("/task/read_inotify_event/eof",

8143

test_read_inotify_event_eof);

8144

test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE",

8145

test_read_inotify_event_IN_CLOSE_WRITE);

8146

test_add_st("/task/read_inotify_event/IN_MOVED_TO",

8147

test_read_inotify_event_IN_MOVED_TO);

8148

test_add_st("/task/read_inotify_event/IN_MOVED_FROM",

8149

test_read_inotify_event_IN_MOVED_FROM);

8150

test_add_st("/task/read_inotify_event/IN_DELETE",

8151

test_read_inotify_event_IN_DELETE);

8152

test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE/badname",

8153

test_read_inotify_event_IN_CLOSE_WRITE_badname);

8154

test_add_st("/task/read_inotify_event/IN_MOVED_TO/badname",

8155

test_read_inotify_event_IN_MOVED_TO_badname);

8156

test_add_st("/task/read_inotify_event/IN_MOVED_FROM/badname",

8157

test_read_inotify_event_IN_MOVED_FROM_badname);

8158

test_add_st("/task/read_inotify_event/IN_DELETE/badname",

8159

test_read_inotify_event_IN_DELETE_badname);

8160

test_add_st("/task/open_and_parse_question/ENOENT",

8161

test_open_and_parse_question_ENOENT);

8162

test_add_st("/task/open_and_parse_question/EIO",

8163

test_open_and_parse_question_EIO);

8164

test_add_st("/task/open_and_parse_question/parse-error",

8165

test_open_and_parse_question_parse_error);

8166

test_add_st("/task/open_and_parse_question/nosocket",

8167

test_open_and_parse_question_nosocket);

8168

test_add_st("/task/open_and_parse_question/badsocket",

8169

test_open_and_parse_question_badsocket);

8170

test_add_st("/task/open_and_parse_question/nopid",

8171

test_open_and_parse_question_nopid);

8172

test_add_st("/task/open_and_parse_question/badpid",

8173

test_open_and_parse_question_badpid);

8174

test_add_st("/task/open_and_parse_question/noexist_pid",

8175

test_open_and_parse_question_noexist_pid);

8176

test_add_st("/task/open_and_parse_question/no-notafter",

8177

test_open_and_parse_question_no_notafter);

8178

test_add_st("/task/open_and_parse_question/bad-notafter",

8179

test_open_and_parse_question_bad_notafter);

8180

test_add_st("/task/open_and_parse_question/notafter-0",

8181

test_open_and_parse_question_notafter_0);

8182

test_add_st("/task/open_and_parse_question/notafter-1",

8183

test_open_and_parse_question_notafter_1);

8184

test_add_st("/task/open_and_parse_question/notafter-1-1",

8185

test_open_and_parse_question_notafter_1_1);

8186

test_add_st("/task/open_and_parse_question/notafter-1-2",

8187

test_open_and_parse_question_notafter_1_2);

8188

test_add_st("/task/open_and_parse_question/equal-notafter",

8189

test_open_and_parse_question_equal_notafter);

8190

test_add_st("/task/open_and_parse_question/late-notafter",

8191

test_open_and_parse_question_late_notafter);

8192

test_add_st("/task/cancel_old_question/0-1-2",

8193

test_cancel_old_question_0_1_2);

8194

test_add_st("/task/cancel_old_question/0-2-1",

8195

test_cancel_old_question_0_2_1);

8196

test_add_st("/task/cancel_old_question/1-2-3",

8197

test_cancel_old_question_1_2_3);

8198

test_add_st("/task/cancel_old_question/1-3-2",

8199

test_cancel_old_question_1_3_2);

8200

test_add_st("/task/cancel_old_question/2-1-3",

8201

test_cancel_old_question_2_1_3);

8202

test_add_st("/task/cancel_old_question/2-3-1",

8203

test_cancel_old_question_2_3_1);

8204

test_add_st("/task/cancel_old_question/3-1-2",

8205

test_cancel_old_question_3_1_2);

8206

test_add_st("/task/cancel_old_question/3-2-1",

8207

test_cancel_old_question_3_2_1);

8208

test_add_st("/task/connect_question_socket/name-too-long",

8209

test_connect_question_socket_name_too_long);

8210

test_add_st("/task/connect_question_socket/connect-fail",

8211

test_connect_question_socket_connect_fail);

8212

test_add_st("/task/connect_question_socket/bad-epoll",

8213

test_connect_question_socket_bad_epoll);

8214

test_add_st("/task/connect_question_socket/usable",

8215

test_connect_question_socket_usable);

8216

test_add_st("/task/send_password_to_socket/client-not-exited",

8217

test_send_password_to_socket_client_not_exited);

8218

test_add_st("/task/send_password_to_socket/password-not-read",

8219

test_send_password_to_socket_password_not_read);

8220

test_add_st("/task/send_password_to_socket/EMSGSIZE",

8221

test_send_password_to_socket_EMSGSIZE);

8222

test_add_st("/task/send_password_to_socket/retry",

8223

test_send_password_to_socket_retry);

8224

test_add_st("/task/send_password_to_socket/bad-epoll",

8225

test_send_password_to_socket_bad_epoll);

8226

test_add_st("/task/send_password_to_socket/null-password",

8227

test_send_password_to_socket_null_password);

8228

test_add_st("/task/send_password_to_socket/empty-password",

8229

test_send_password_to_socket_empty_password);

8230

test_add_st("/task/send_password_to_socket/empty-str-password",

8231

test_send_password_to_socket_empty_str_pass);

8232

test_add_st("/task/send_password_to_socket/text-password",

8233

test_send_password_to_socket_text_password);

8234

test_add_st("/task/send_password_to_socket/binary-password",

8235

test_send_password_to_socket_binary_password);

8236

test_add_st("/task/send_password_to_socket/nuls-in-password",

8237

test_send_password_to_socket_nuls_in_password);

8238

test_add_st("/task-creators/add_existing_questions/ENOENT",

8239

test_add_existing_questions_ENOENT);

8240

test_add_st("/task-creators/add_existing_questions/no-questions",

8241

test_add_existing_questions_no_questions);

8242

test_add_st("/task-creators/add_existing_questions/one-question",

8243

test_add_existing_questions_one_question);

8244

test_add_st("/task-creators/add_existing_questions/two-questions",

8245

test_add_existing_questions_two_questions);

8246

test_add_st("/task-creators/add_existing_questions/non-questions",

8247

test_add_existing_questions_non_questions);

8248

test_add_st("/task-creators/add_existing_questions/both-types",

8249

test_add_existing_questions_both_types);

8250

8251

return g_test_run() == 0;

8252

}

8253

8254

static bool should_only_run_tests(int *argc_p, char **argv_p[]){

8255

GOptionContext *context = g_option_context_new("");

8256

8257

g_option_context_set_help_enabled(context, FALSE);

8258

g_option_context_set_ignore_unknown_options(context, TRUE);

8259

8260

gboolean should_run_tests = FALSE;

8261

GOptionEntry entries[] = {

8262

{ "test", 0, 0, G_OPTION_ARG_NONE,

8263

&should_run_tests, "Run tests", NULL },

8264

{ NULL }

8265

};

8266

g_option_context_add_main_entries(context, entries, NULL);

8267

8268

GError *error = NULL;

8269

8270

if(g_option_context_parse(context, argc_p, argv_p, &error) != TRUE){

8271

g_option_context_free(context);

8272

g_error("Failed to parse options: %s", error->message);

8273

}

8274

8275

g_option_context_free(context);

8276

return should_run_tests != FALSE;

8277

}

8278

8279

/*

8280

Local Variables:

8281

run-tests:

8282

(lambda ()

8283

(if (not (funcall run-tests-in-test-buffer default-directory))

8284

(funcall show-test-buffer-in-test-window)

8285

(funcall remove-test-window)))

8286

run-tests-in-test-buffer:

8287

(lambda (dir)

8288

(with-current-buffer (get-buffer-create "*Test*")

8289

(setq buffer-read-only nil

8290

default-directory dir)

8291

(erase-buffer)

8292

(compilation-mode))

8293

(let ((process-result

8294

(let ((inhibit-read-only t))

8295

(process-file-shell-command

8296

(funcall get-command-line) nil "*Test*"))))

8297

(and (numberp process-result)

8298

(= process-result 0))))

8299

get-command-line:

8300

(lambda ()

8301

(let*

8302

((build-directory

8303

(funcall find-build-directory (buffer-file-name)))

8304

(local-build-directory

8305

(if (fboundp 'file-local-name)

8306

(file-local-name build-directory)

8307

(or (file-remote-p build-directory 'localname)

8308

build-directory)))

8309

(command

8310

(file-relative-name (file-name-sans-extension

8311

(buffer-file-name)) build-directory))

8312

(qbdir (shell-quote-argument local-build-directory))

8313

(qcmd (shell-quote-argument command)))

8314

(format (concat "cd %s && CFLAGS=-Werror make --silent %s"

8315

" && %s --test --verbose") qbdir qcmd qcmd)))

8316

find-build-directory:

8317

(lambda (try-directory &optional base-directory)

8318

(let ((base-directory (or base-directory try-directory)))

8319

(cond ((equal try-directory "/") base-directory)

8320

((file-readable-p

8321

(concat (file-name-as-directory try-directory)

8322

"Makefile")) try-directory)

8323

((funcall find-build-directory

8324

(directory-file-name (file-name-directory

8325

try-directory))

8326

base-directory)))))

8327

show-test-buffer-in-test-window:

8328

(lambda ()

8329

(when (not (get-buffer-window-list "*Test*"))

8330

(setq next-error-last-buffer (get-buffer "*Test*"))

8331

(let* ((side (if (>= (window-width) 146) 'right 'bottom))

8332

(display-buffer-overriding-action

8333

`((display-buffer-in-side-window) (side . ,side)

8334

(window-height . fit-window-to-buffer)

8335

(window-width . fit-window-to-buffer))))

8336

(display-buffer "*Test*"))))

8337

remove-test-window:

8338

(lambda ()

8339

(let ((test-window (get-buffer-window "*Test*")))

8340

(if test-window (delete-window test-window))))

8341

eval: (add-hook 'after-save-hook run-tests 90 t)

8342

End:

8343

*/