/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1
/*  -*- coding: utf-8 -*- */
2
/*
237.2.24 by Teddy Hogeborn
* plugins.d/askpass-fifo.c: Fix name in header.
3
 * Mandos-client - get and decrypt data from a Mandos server
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
4
 *
5
 * This program is partly derived from an example program for an Avahi
6
 * service browser, downloaded from
7
 * <http://avahi.org/browser/examples/core-browse-services.c>.  This
8
 * includes the following functions: "resolve_callback",
9
 * "browse_callback", and parts of "main".
10
 * 
28 by Teddy Hogeborn
* server.conf: New file.
11
 * Everything else is
237.7.766 by teddy at recompile
Update copyright year
12
 * Copyright © 2008-2020 Teddy Hogeborn
13
 * Copyright © 2008-2020 Björn Påhlsson
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
14
 * 
237.7.455 by Teddy Hogeborn
Alter copyright notices slightly. Actual license is unchanged!
15
 * This file is part of Mandos.
16
 * 
17
 * Mandos is free software: you can redistribute it and/or modify it
18
 * under the terms of the GNU General Public License as published by
19
 * the Free Software Foundation, either version 3 of the License, or
20
 * (at your option) any later version.
21
 * 
22
 * Mandos is distributed in the hope that it will be useful, but
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
23
 * WITHOUT ANY WARRANTY; without even the implied warranty of
24
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
25
 * General Public License for more details.
26
 * 
27
 * You should have received a copy of the GNU General Public License
237.7.455 by Teddy Hogeborn
Alter copyright notices slightly. Actual license is unchanged!
28
 * along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
29
 * 
237.11.2 by Teddy Hogeborn
Change "fukt.bsnet.se" to "recompile.se" throughout.
30
 * Contact the authors at <mandos@recompile.se>.
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
31
 */
32
28 by Teddy Hogeborn
* server.conf: New file.
33
/* Needed by GPGME, specifically gpgme_data_seek() */
237.2.80 by Teddy Hogeborn
Use "getconf" to get correct LFS compile and link flags.
34
#ifndef _LARGEFILE_SOURCE
13 by Björn Påhlsson
Added following support:
35
#define _LARGEFILE_SOURCE
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
36
#endif	/* not _LARGEFILE_SOURCE */
237.2.80 by Teddy Hogeborn
Use "getconf" to get correct LFS compile and link flags.
37
#ifndef _FILE_OFFSET_BITS
13 by Björn Påhlsson
Added following support:
38
#define _FILE_OFFSET_BITS 64
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
39
#endif	/* not _FILE_OFFSET_BITS */
13 by Björn Påhlsson
Added following support:
40
237.7.781 by Teddy Hogeborn
Fix #include headers
41
#define _GNU_SOURCE		/* program_invocation_short_name,
42
				   TEMP_FAILURE_RETRY(), O_CLOEXEC,
43
				   scandirat(), asprintf() */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
44
#include <stdbool.h>		/* bool, false, true */
237.7.781 by Teddy Hogeborn
Fix #include headers
45
#include <argp.h>		/* argp_program_version,
46
				   argp_program_bug_address,
47
				   struct argp_option,
48
				   struct argp_state, argp_error(),
49
				   argp_state_help,
50
				   ARGP_HELP_STD_HELP,
51
				   ARGP_HELP_EXIT_ERR,
52
				   ARGP_HELP_EXIT_OK, ARGP_HELP_USAGE,
53
				   argp_err_exit_status,
54
				   ARGP_ERR_UNKNOWN, struct argp,
55
				   argp_parse(), ARGP_IN_ORDER,
56
				   ARGP_NO_HELP */
57
#include <stddef.h>		/* NULL, size_t */
58
#include <sys/types.h>		/* uid_t, gid_t, sig_atomic_t,
59
				   seteuid(), setuid(), pid_t,
60
				   setgid(), getuid(), getgid() */
61
#include <unistd.h>		/* uid_t, gid_t, TEMP_FAILURE_RETRY(),
62
				   seteuid(), setuid(), close(),
63
				   ssize_t, read(), fork(), setgid(),
64
				   _exit(), dup2(), STDIN_FILENO,
65
				   STDERR_FILENO, STDOUT_FILENO,
66
				   fexecve(), write(), getuid(),
67
				   getgid(), fchown(), symlink(),
68
				   sleep(), unlinkat(), pause() */
69
#include <netinet/in.h>		/* in_port_t, struct sockaddr_in6,
70
				   sa_family_t, struct sockaddr_in,
71
				   htons(), IN6_IS_ADDR_LINKLOCAL,
72
				   INET_ADDRSTRLEN, INET6_ADDRSTRLEN,
73
				   ntohl(), IPPROTO_IP */
74
#include <time.h>		/* struct timespec, clock_gettime(),
75
				   CLOCK_MONOTONIC, time_t, struct tm,
76
				   gmtime_r(), clock_settime(),
77
				   CLOCK_REALTIME, nanosleep() */
78
#include <errno.h>		/* errno,
79
				   program_invocation_short_name,
80
				   EINTR, EINVAL, ENETUNREACH,
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
81
				   EHOSTUNREACH, ECONNREFUSED, EPROTO,
237.7.781 by Teddy Hogeborn
Fix #include headers
82
				   EIO, ENOENT, ENXIO, error_t,
83
				   ENOMEM, EISDIR, ENOTEMPTY */
84
#include <stdio.h>		/* fprintf(), stderr, perror(), FILE,
85
				   vfprintf(), off_t, SEEK_SET,
86
				   stdout, fwrite(), ferror(),
87
				   fflush(), asprintf() */
88
#include <stdarg.h>		/* va_list, va_start(), vfprintf() */
89
#include <stdlib.h>		/* realloc(), free(), malloc(),
90
				   getenv(), EXIT_FAILURE, setenv(),
91
				   EXIT_SUCCESS, strtof(), strtod(),
92
				   srand(), mkdtemp(), abort() */
93
#include <string.h>		/* strdup(), strcmp(), strlen(),
94
				   strerror(), strncpy(), strspn(),
95
				   memcpy(), strrchr(), strchr(),
96
				   strsignal() */
97
#include <fcntl.h>		/* open(), O_RDONLY, O_DIRECTORY,
98
				   O_PATH, O_CLOEXEC, openat(),
99
				   O_NOFOLLOW, AT_REMOVEDIR */
100
#include <iso646.h>		/* or, and, not */
101
#include <sys/stat.h>		/* struct stat, fstat(), fstatat(),
102
				   S_ISREG(), S_IXUSR, S_IXGRP,
103
				   S_IXOTH, lstat() */
104
#include <net/if.h>		/* IF_NAMESIZE, if_indextoname(),
105
				   if_nametoindex(), SIOCGIFFLAGS,
106
				   IFF_LOOPBACK, IFF_POINTOPOINT,
107
				   IFF_BROADCAST, IFF_NOARP, IFF_UP,
108
				   IFF_RUNNING, SIOCSIFFLAGS */
109
#include <sysexits.h>		/* EX_NOPERM, EX_OSERR,
110
				   EX_UNAVAILABLE, EX_USAGE */
111
#include <grp.h>		/* setgroups() */
237.16.3 by teddy at bsnet
* plugins.d/mandos-client.c: Prefix all printouts with "Mandos plugin
112
#include <sys/wait.h>		/* waitpid(), WIFEXITED(),
237.7.781 by Teddy Hogeborn
Fix #include headers
113
				   WEXITSTATUS(), WIFSIGNALED(),
114
				   WTERMSIG() */
115
#include <signal.h>		/* kill(), SIGTERM, struct sigaction,
116
				   SIG_DFL, sigemptyset(),
117
				   sigaddset(), SIGINT, SIGHUP,
118
				   SIG_IGN, raise() */
119
#include <sys/socket.h>		/* struct sockaddr_storage, AF_INET6,
120
				   PF_INET6, AF_INET, PF_INET,
121
				   socket(), SOCK_STREAM,
122
				   SOCK_CLOEXEC, struct sockaddr,
123
				   connect(), SOCK_DGRAM */
124
#include <argz.h>		/* argz_next(), argz_add_sep(),
125
				   argz_delete(), argz_stringify(),
126
				   argz_add(), argz_count() */
127
#include <inttypes.h>		/* PRIuMAX, uintmax_t, uint32_t,
128
				   PRIdMAX, PRIu16, intmax_t,
129
				   strtoimax() */
130
#include <arpa/inet.h>		/* inet_pton() */
131
#include <stdint.h>		/* uint32_t, intptr_t, uint16_t */
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
132
#include <netdb.h>		/* getnameinfo(), NI_NUMERICHOST,
133
				   EAI_SYSTEM, gai_strerror() */
237.7.781 by Teddy Hogeborn
Fix #include headers
134
#include <sys/ioctl.h>		/* ioctl() */
135
#include <dirent.h>		/* struct dirent, scandirat(),
136
				   alphasort(), scandir() */
137
#include <limits.h>		/* INT_MAX */
237.2.70 by Teddy Hogeborn
Merge from Björn:
138
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
139
#ifdef __linux__
24.1.124 by Björn Påhlsson
Added lower kernel loglevel to reduce clutter on system console.
140
#include <sys/klog.h> 		/* klogctl() */
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
141
#endif	/* __linux__ */
24.1.26 by Björn Påhlsson
tally count of used symbols
142
143
/* Avahi */
24.1.29 by Björn Påhlsson
Added more header file comments
144
/* All Avahi types, constants and functions
145
 Avahi*, avahi_*,
146
 AVAHI_* */
147
#include <avahi-core/core.h>
24.1.26 by Björn Påhlsson
tally count of used symbols
148
#include <avahi-core/lookup.h>
24.1.29 by Björn Påhlsson
Added more header file comments
149
#include <avahi-core/log.h>
24.1.26 by Björn Påhlsson
tally count of used symbols
150
#include <avahi-common/simple-watch.h>
151
#include <avahi-common/malloc.h>
152
#include <avahi-common/error.h>
153
154
/* GnuTLS */
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
155
#include <gnutls/gnutls.h>	/* All GnuTLS types, constants and
237.7.781 by Teddy Hogeborn
Fix #include headers
156
				   functions: gnutls_*, GNUTLS_* */
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
157
#if GNUTLS_VERSION_NUMBER < 0x030600
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
158
#include <gnutls/openpgp.h>
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
159
			 /* gnutls_certificate_set_openpgp_key_file(),
160
			    GNUTLS_OPENPGP_FMT_BASE64 */
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
161
#elif GNUTLS_VERSION_NUMBER >= 0x030606
237.7.781 by Teddy Hogeborn
Fix #include headers
162
#include <gnutls/x509.h>	/* GNUTLS_PKCS_PLAIN,
163
				   GNUTLS_PKCS_NULL_PASSWORD */
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
164
#endif
24.1.26 by Björn Påhlsson
tally count of used symbols
165
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
166
/* GPGME */
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
167
#include <gpgme.h> 		/* All GPGME types, constants and
168
				   functions:
237.7.781 by Teddy Hogeborn
Fix #include headers
169
				   gpgme_*, GPG_ERR_NO_*,
170
				   GPGME_IMPORT_*
171
				   GPGME_PROTOCOL_OpenPGP */
13 by Björn Påhlsson
Added following support:
172
173
#define BUFFER_SIZE 256
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
174
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
175
#define PATHDIR "/conf/conf.d/mandos"
176
#define SECKEY "seckey.txt"
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
177
#define PUBKEY "pubkey.txt"
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
178
#define TLS_PRIVKEY "tls-privkey.pem"
179
#define TLS_PUBKEY "tls-pubkey.pem"
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
180
#define HOOKDIR "/lib/mandos/network-hooks.d"
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
181
15.1.2 by Björn Påhlsson
Added debug options from passprompt as --debug and --debug=passprompt
182
bool debug = false;
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
183
static const char mandos_protocol_version[] = "1";
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
184
const char *argp_program_version = "mandos-client " VERSION;
185
const char *argp_program_bug_address = "<mandos@recompile.se>";
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
186
static const char sys_class_net[] = "/sys/class/net";
187
char *connect_to = NULL;
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
188
const char *hookdir = HOOKDIR;
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
189
int hookdir_fd = -1;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
190
uid_t uid = 65534;
191
gid_t gid = 65534;
24.1.10 by Björn Påhlsson
merge commit
192
237.7.33 by Teddy Hogeborn
Merge from Björn.
193
/* Doubly linked list that need to be circularly linked when used */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
194
typedef struct server{
195
  const char *ip;
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
196
  in_port_t port;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
197
  AvahiIfIndex if_index;
198
  int af;
199
  struct timespec last_seen;
200
  struct server *next;
201
  struct server *prev;
202
} server;
203
42 by Teddy Hogeborn
* plugins.d/mandosclient.c (start_mandos_communication): Change "to"
204
/* Used for passing in values through the Avahi callback functions */
13 by Björn Påhlsson
Added following support:
205
typedef struct {
24.1.9 by Björn Påhlsson
not working midwork...
206
  AvahiServer *server;
13 by Björn Påhlsson
Added following support:
207
  gnutls_certificate_credentials_t cred;
24.1.9 by Björn Påhlsson
not working midwork...
208
  unsigned int dh_bits;
24.1.13 by Björn Påhlsson
mandosclient
209
  gnutls_dh_params_t dh_params;
24.1.9 by Björn Påhlsson
not working midwork...
210
  const char *priority;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
211
  gpgme_ctx_t ctx;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
212
  server *current_server;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
213
  char *interfaces;
214
  size_t interfaces_size;
24.1.9 by Björn Påhlsson
not working midwork...
215
} mandos_context;
13 by Björn Påhlsson
Added following support:
216
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
217
/* global so signal handler can reach it*/
218
AvahiSimplePoll *simple_poll;
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
219
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
220
sig_atomic_t quit_now = 0;
221
int signal_received = 0;
222
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
223
/* Function to use when printing errors */
224
void perror_plus(const char *print_text){
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
225
  int e = errno;
237.7.33 by Teddy Hogeborn
Merge from Björn.
226
  fprintf(stderr, "Mandos plugin %s: ",
227
	  program_invocation_short_name);
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
228
  errno = e;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
229
  perror(print_text);
230
}
231
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
232
__attribute__((format (gnu_printf, 2, 3), nonnull))
237.15.4 by Björn Påhlsson
New convinence error printer: fprintf_plus
233
int fprintf_plus(FILE *stream, const char *format, ...){
234
  va_list ap;
235
  va_start (ap, format);
236
  
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
237
  TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
238
			     program_invocation_short_name));
237.7.170 by Teddy Hogeborn
* debian/control (Build-Depends): Depend on debhelper 8.9.7 for using
239
  return (int)TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
237.15.4 by Björn Påhlsson
New convinence error printer: fprintf_plus
240
}
241
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
242
/*
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
243
 * Make additional room in "buffer" for at least BUFFER_SIZE more
244
 * bytes. "buffer_capacity" is how much is currently allocated,
245
 * "buffer_length" is how much is already used.
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
246
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
247
__attribute__((nonnull, warn_unused_result))
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
248
size_t incbuffer(char **buffer, size_t buffer_length,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
249
		 size_t buffer_capacity){
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
250
  if(buffer_length + BUFFER_SIZE > buffer_capacity){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
251
    char *new_buf = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
252
    if(new_buf == NULL){
253
      int old_errno = errno;
254
      free(*buffer);
255
      errno = old_errno;
256
      *buffer = NULL;
24.1.10 by Björn Påhlsson
merge commit
257
      return 0;
258
    }
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
259
    *buffer = new_buf;
24.1.10 by Björn Påhlsson
merge commit
260
    buffer_capacity += BUFFER_SIZE;
261
  }
262
  return buffer_capacity;
263
}
264
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
265
/* Add server to set of servers to retry periodically */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
266
__attribute__((nonnull, warn_unused_result))
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
267
bool add_server(const char *ip, in_port_t port, AvahiIfIndex if_index,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
268
		int af, server **current_server){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
269
  int ret;
270
  server *new_server = malloc(sizeof(server));
271
  if(new_server == NULL){
272
    perror_plus("malloc");
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
273
    return false;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
274
  }
275
  *new_server = (server){ .ip = strdup(ip),
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
276
			  .port = port,
277
			  .if_index = if_index,
278
			  .af = af };
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
279
  if(new_server->ip == NULL){
280
    perror_plus("strdup");
237.7.258 by Teddy Hogeborn
mandos-client: Fix minor memory leak on memory full or clock failure.
281
    free(new_server);
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
282
    return false;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
283
  }
237.7.216 by Teddy Hogeborn
Do not add a new server to server list if clock_gettime() fails
284
  ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));
285
  if(ret == -1){
286
    perror_plus("clock_gettime");
237.7.262 by Teddy Hogeborn
mandos-client: Fix mem free bug.
287
#ifdef __GNUC__
288
#pragma GCC diagnostic push
289
#pragma GCC diagnostic ignored "-Wcast-qual"
290
#endif
291
    free((char *)(new_server->ip));
292
#ifdef __GNUC__
293
#pragma GCC diagnostic pop
294
#endif
237.7.258 by Teddy Hogeborn
mandos-client: Fix minor memory leak on memory full or clock failure.
295
    free(new_server);
237.7.216 by Teddy Hogeborn
Do not add a new server to server list if clock_gettime() fails
296
    return false;
297
  }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
298
  /* Special case of first server */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
299
  if(*current_server == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
300
    new_server->next = new_server;
301
    new_server->prev = new_server;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
302
    *current_server = new_server;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
303
  } else {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
304
    /* Place the new server last in the list */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
305
    new_server->next = *current_server;
306
    new_server->prev = (*current_server)->prev;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
307
    new_server->prev->next = new_server;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
308
    (*current_server)->prev = new_server;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
309
  }
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
310
  return true;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
311
}
312
237.7.499 by Teddy Hogeborn
mandos-client: Set system clock if necessary
313
/* Set effective uid to 0, return errno */
314
__attribute__((warn_unused_result))
315
int raise_privileges(void){
316
  int old_errno = errno;
317
  int ret = 0;
318
  if(seteuid(0) == -1){
319
    ret = errno;
320
  }
321
  errno = old_errno;
322
  return ret;
323
}
324
325
/* Set effective and real user ID to 0.  Return errno. */
326
__attribute__((warn_unused_result))
327
int raise_privileges_permanently(void){
328
  int old_errno = errno;
329
  int ret = raise_privileges();
330
  if(ret != 0){
331
    errno = old_errno;
332
    return ret;
333
  }
334
  if(setuid(0) == -1){
335
    ret = errno;
336
  }
337
  errno = old_errno;
338
  return ret;
339
}
340
341
/* Set effective user ID to unprivileged saved user ID */
342
__attribute__((warn_unused_result))
343
int lower_privileges(void){
344
  int old_errno = errno;
345
  int ret = 0;
346
  if(seteuid(uid) == -1){
347
    ret = errno;
348
  }
349
  errno = old_errno;
350
  return ret;
351
}
352
353
/* Lower privileges permanently */
354
__attribute__((warn_unused_result))
355
int lower_privileges_permanently(void){
356
  int old_errno = errno;
357
  int ret = 0;
358
  if(setuid(uid) == -1){
359
    ret = errno;
360
  }
361
  errno = old_errno;
362
  return ret;
363
}
364
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
365
/* 
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
366
 * Initialize GPGME.
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
367
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
368
__attribute__((nonnull, warn_unused_result))
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
369
static bool init_gpgme(const char * const seckey,
370
		       const char * const pubkey,
371
		       const char * const tempdir,
372
		       mandos_context *mc){
13 by Björn Påhlsson
Added following support:
373
  gpgme_error_t rc;
374
  gpgme_engine_info_t engine_info;
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
375
  
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
376
  /*
237.2.51 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Use separate bool variable instead
377
   * Helper function to insert pub and seckey to the engine keyring.
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
378
   */
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
379
  bool import_key(const char * const filename){
237.2.124 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gpgme): Move variable "ret" into the
380
    int ret;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
381
    int fd;
382
    gpgme_data_t pgp_data;
383
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
384
    fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
385
    if(fd == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
386
      perror_plus("open");
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
387
      return false;
388
    }
389
    
237.7.499 by Teddy Hogeborn
mandos-client: Set system clock if necessary
390
    /* Workaround for systems without a real-time clock; see also
391
       Debian bug #894495: <https://bugs.debian.org/894495> */
392
    do {
393
      {
394
	time_t currtime = time(NULL);
395
	if(currtime != (time_t)-1){
396
	  struct tm tm;
397
	  if(gmtime_r(&currtime, &tm) == NULL) {
398
	    perror_plus("gmtime_r");
399
	    break;
400
	  }
401
	  if(tm.tm_year != 70 or tm.tm_mon != 0){
402
	    break;
403
	  }
404
	  if(debug){
405
	    fprintf_plus(stderr, "System clock is January 1970");
406
	  }
407
	} else {
408
	  if(debug){
409
	    fprintf_plus(stderr, "System clock is invalid");
410
	  }
411
	}
412
      }
413
      struct stat keystat;
414
      ret = fstat(fd, &keystat);
415
      if(ret != 0){
416
	perror_plus("fstat");
417
	break;
418
      }
419
      ret = raise_privileges();
420
      if(ret != 0){
421
	errno = ret;
422
	perror_plus("Failed to raise privileges");
423
	break;
424
      }
425
      if(debug){
426
	fprintf_plus(stderr,
427
		     "Setting system clock to key file mtime");
428
      }
237.7.765 by teddy at recompile
mandos-client.c: Use clock_settime() instead of stime()
429
      if(clock_settime(CLOCK_REALTIME, &keystat.st_mtim) != 0){
430
	perror_plus("clock_settime");
237.7.499 by Teddy Hogeborn
mandos-client: Set system clock if necessary
431
      }
432
      ret = lower_privileges();
433
      if(ret != 0){
434
	errno = ret;
435
	perror_plus("Failed to lower privileges");
436
      }
437
    } while(false);
438
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
439
    rc = gpgme_data_new_from_fd(&pgp_data, fd);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
440
    if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
441
      fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
442
		   gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
443
      return false;
444
    }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
445
    
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
446
    rc = gpgme_op_import(mc->ctx, pgp_data);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
447
    if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
448
      fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
449
		   gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
450
      return false;
451
    }
237.7.495 by Teddy Hogeborn
Check for and report GPGME key import errors
452
    {
453
      gpgme_import_result_t import_result
454
	= gpgme_op_import_result(mc->ctx);
455
      if((import_result->imported < 1
456
	  or import_result->not_imported > 0)
457
	 and import_result->unchanged == 0){
458
	fprintf_plus(stderr, "bad gpgme_op_import_results:\n");
459
	fprintf_plus(stderr,
460
		     "The total number of considered keys: %d\n",
461
		     import_result->considered);
462
	fprintf_plus(stderr,
463
		     "The number of keys without user ID: %d\n",
464
		     import_result->no_user_id);
465
	fprintf_plus(stderr,
466
		     "The total number of imported keys: %d\n",
467
		     import_result->imported);
468
	fprintf_plus(stderr, "The number of imported RSA keys: %d\n",
469
		     import_result->imported_rsa);
470
	fprintf_plus(stderr, "The number of unchanged keys: %d\n",
471
		     import_result->unchanged);
472
	fprintf_plus(stderr, "The number of new user IDs: %d\n",
473
		     import_result->new_user_ids);
474
	fprintf_plus(stderr, "The number of new sub keys: %d\n",
475
		     import_result->new_sub_keys);
476
	fprintf_plus(stderr, "The number of new signatures: %d\n",
477
		     import_result->new_signatures);
478
	fprintf_plus(stderr, "The number of new revocations: %d\n",
479
		     import_result->new_revocations);
480
	fprintf_plus(stderr,
481
		     "The total number of secret keys read: %d\n",
482
		     import_result->secret_read);
483
	fprintf_plus(stderr,
484
		     "The number of imported secret keys: %d\n",
485
		     import_result->secret_imported);
486
	fprintf_plus(stderr,
487
		     "The number of unchanged secret keys: %d\n",
488
		     import_result->secret_unchanged);
489
	fprintf_plus(stderr, "The number of keys not imported: %d\n",
490
		     import_result->not_imported);
491
	for(gpgme_import_status_t import_status
492
	      = import_result->imports;
493
	    import_status != NULL;
494
	    import_status = import_status->next){
495
	  fprintf_plus(stderr, "Import status for key: %s\n",
496
		       import_status->fpr);
497
	  if(import_status->result != GPG_ERR_NO_ERROR){
498
	    fprintf_plus(stderr, "Import result: %s: %s\n",
499
			 gpgme_strsource(import_status->result),
500
			 gpgme_strerror(import_status->result));
501
	  }
502
	  fprintf_plus(stderr, "Key status:\n");
503
	  fprintf_plus(stderr,
504
		       import_status->status & GPGME_IMPORT_NEW
505
		       ? "The key was new.\n"
506
		       : "The key was not new.\n");
507
	  fprintf_plus(stderr,
508
		       import_status->status & GPGME_IMPORT_UID
509
		       ? "The key contained new user IDs.\n"
510
		       : "The key did not contain new user IDs.\n");
511
	  fprintf_plus(stderr,
512
		       import_status->status & GPGME_IMPORT_SIG
513
		       ? "The key contained new signatures.\n"
514
		       : "The key did not contain new signatures.\n");
515
	  fprintf_plus(stderr,
516
		       import_status->status & GPGME_IMPORT_SUBKEY
517
		       ? "The key contained new sub keys.\n"
518
		       : "The key did not contain new sub keys.\n");
519
	  fprintf_plus(stderr,
520
		       import_status->status & GPGME_IMPORT_SECRET
521
		       ? "The key contained a secret key.\n"
522
		       : "The key did not contain a secret key.\n");
523
	}
524
	return false;
525
      }
526
    }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
527
    
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
528
    ret = close(fd);
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
529
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
530
      perror_plus("close");
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
531
    }
532
    gpgme_data_release(pgp_data);
533
    return true;
534
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
535
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
536
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
537
    fprintf_plus(stderr, "Initializing GPGME\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
538
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
539
  
13 by Björn Påhlsson
Added following support:
540
  /* Init GPGME */
541
  gpgme_check_version(NULL);
24.1.4 by Björn Påhlsson
Added optional parameters certdir, certkey and certfile that can be iven at start in the command line.
542
  rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
543
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
544
    fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
545
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
546
    return false;
24.1.4 by Björn Påhlsson
Added optional parameters certdir, certkey and certfile that can be iven at start in the command line.
547
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
548
  
237.7.40 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not even try to work around
549
  /* Set GPGME home directory for the OpenPGP engine only */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
550
  rc = gpgme_get_engine_info(&engine_info);
551
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
552
    fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
553
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
554
    return false;
13 by Björn Påhlsson
Added following support:
555
  }
556
  while(engine_info != NULL){
557
    if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
558
      gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
559
			    engine_info->file_name, tempdir);
13 by Björn Påhlsson
Added following support:
560
      break;
561
    }
562
    engine_info = engine_info->next;
563
  }
564
  if(engine_info == NULL){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
565
    fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
566
		 tempdir);
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
567
    return false;
568
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
569
  
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
570
  /* Create new GPGME "context" */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
571
  rc = gpgme_new(&(mc->ctx));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
572
  if(rc != GPG_ERR_NO_ERROR){
237.7.494 by Teddy Hogeborn
Remove duplicate "Mandos plugin mandos-client:" in error output
573
    fprintf_plus(stderr, "bad gpgme_new: %s: %s\n",
574
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
575
    return false;
576
  }
577
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
578
  if(not import_key(pubkey) or not import_key(seckey)){
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
579
    return false;
580
  }
581
  
237.2.118 by Teddy Hogeborn
* mandos: White-space fixes only.
582
  return true;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
583
}
584
585
/* 
586
 * Decrypt OpenPGP data.
587
 * Returns -1 on error
588
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
589
__attribute__((nonnull, warn_unused_result))
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
590
static ssize_t pgp_packet_decrypt(const char *cryptotext,
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
591
				  size_t crypto_size,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
592
				  char **plaintext,
593
				  mandos_context *mc){
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
594
  gpgme_data_t dh_crypto, dh_plain;
595
  gpgme_error_t rc;
596
  ssize_t ret;
597
  size_t plaintext_capacity = 0;
598
  ssize_t plaintext_length = 0;
599
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
600
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
601
    fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
13 by Björn Påhlsson
Added following support:
602
  }
603
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
604
  /* Create new GPGME data buffer from memory cryptotext */
605
  rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
606
			       0);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
607
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
608
    fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
609
		 gpgme_strsource(rc), gpgme_strerror(rc));
13 by Björn Påhlsson
Added following support:
610
    return -1;
611
  }
612
  
613
  /* Create new empty GPGME data buffer for the plaintext */
614
  rc = gpgme_data_new(&dh_plain);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
615
  if(rc != GPG_ERR_NO_ERROR){
237.7.494 by Teddy Hogeborn
Remove duplicate "Mandos plugin mandos-client:" in error output
616
    fprintf_plus(stderr, "bad gpgme_data_new: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
617
		 gpgme_strsource(rc), gpgme_strerror(rc));
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
618
    gpgme_data_release(dh_crypto);
13 by Björn Påhlsson
Added following support:
619
    return -1;
620
  }
621
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
622
  /* Decrypt data from the cryptotext data buffer to the plaintext
623
     data buffer */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
624
  rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
625
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
626
    fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
627
		 gpgme_strsource(rc), gpgme_strerror(rc));
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
628
    plaintext_length = -1;
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
629
    if(debug){
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
630
      gpgme_decrypt_result_t result;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
631
      result = gpgme_op_decrypt_result(mc->ctx);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
632
      if(result == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
633
	fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
634
      } else {
237.7.492 by Teddy Hogeborn
Don't print NULL string pointers in error message output
635
	if(result->unsupported_algorithm != NULL) {
636
	  fprintf_plus(stderr, "Unsupported algorithm: %s\n",
637
		       result->unsupported_algorithm);
638
	}
237.7.493 by Teddy Hogeborn
Print a boolean more readably in error message output
639
	fprintf_plus(stderr, "Wrong key usage: %s\n",
640
		     result->wrong_key_usage ? "Yes" : "No");
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
641
	if(result->file_name != NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
642
	  fprintf_plus(stderr, "File name: %s\n", result->file_name);
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
643
	}
237.7.496 by Teddy Hogeborn
Minor code cleanup
644
645
	for(gpgme_recipient_t r = result->recipients; r != NULL;
646
	    r = r->next){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
647
	  fprintf_plus(stderr, "Public key algorithm: %s\n",
237.7.496 by Teddy Hogeborn
Minor code cleanup
648
		       gpgme_pubkey_algo_name(r->pubkey_algo));
649
	  fprintf_plus(stderr, "Key ID: %s\n", r->keyid);
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
650
	  fprintf_plus(stderr, "Secret key available: %s\n",
237.7.496 by Teddy Hogeborn
Minor code cleanup
651
		       r->status == GPG_ERR_NO_SECKEY ? "No" : "Yes");
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
652
	}
653
      }
654
    }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
655
    goto decrypt_end;
13 by Björn Påhlsson
Added following support:
656
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
657
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
658
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
659
    fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
660
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
661
  
13 by Björn Påhlsson
Added following support:
662
  /* Seek back to the beginning of the GPGME plaintext data buffer */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
663
  if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
664
    perror_plus("gpgme_data_seek");
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
665
    plaintext_length = -1;
666
    goto decrypt_end;
24.1.5 by Björn Påhlsson
plugbasedclient:
667
  }
668
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
669
  *plaintext = NULL;
13 by Björn Påhlsson
Added following support:
670
  while(true){
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
671
    plaintext_capacity = incbuffer(plaintext,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
672
				   (size_t)plaintext_length,
673
				   plaintext_capacity);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
674
    if(plaintext_capacity == 0){
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
675
      perror_plus("incbuffer");
676
      plaintext_length = -1;
677
      goto decrypt_end;
13 by Björn Påhlsson
Added following support:
678
    }
679
    
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
680
    ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
681
			  BUFFER_SIZE);
13 by Björn Påhlsson
Added following support:
682
    /* Print the data, if any */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
683
    if(ret == 0){
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
684
      /* EOF */
13 by Björn Påhlsson
Added following support:
685
      break;
686
    }
687
    if(ret < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
688
      perror_plus("gpgme_data_read");
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
689
      plaintext_length = -1;
690
      goto decrypt_end;
13 by Björn Påhlsson
Added following support:
691
    }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
692
    plaintext_length += ret;
13 by Björn Påhlsson
Added following support:
693
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
694
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
695
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
696
    fprintf_plus(stderr, "Decrypted password is: ");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
697
    for(ssize_t i = 0; i < plaintext_length; i++){
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
698
      fprintf(stderr, "%02hhX ", (*plaintext)[i]);
699
    }
700
    fprintf(stderr, "\n");
701
  }
702
  
703
 decrypt_end:
704
  
705
  /* Delete the GPGME cryptotext data buffer */
706
  gpgme_data_release(dh_crypto);
15.1.3 by Björn Påhlsson
Added getopt_long support for mandosclient and passprompt
707
  
708
  /* Delete the GPGME plaintext data buffer */
13 by Björn Påhlsson
Added following support:
709
  gpgme_data_release(dh_plain);
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
710
  return plaintext_length;
13 by Björn Påhlsson
Added following support:
711
}
712
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
713
__attribute__((warn_unused_result, const))
714
static const char *safe_string(const char *str){
715
  if(str == NULL)
716
    return "(unknown)";
717
  return str;
718
}
719
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
720
__attribute__((warn_unused_result))
721
static const char *safer_gnutls_strerror(int value){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
722
  const char *ret = gnutls_strerror(value);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
723
  return safe_string(ret);
13 by Björn Påhlsson
Added following support:
724
}
725
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
726
/* GnuTLS log function callback */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
727
__attribute__((nonnull))
36 by Teddy Hogeborn
* TODO: Converted to org-mode style
728
static void debuggnutls(__attribute__((unused)) int level,
729
			const char* string){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
730
  fprintf_plus(stderr, "GnuTLS: %s", string);
13 by Björn Påhlsson
Added following support:
731
}
732
237.7.359 by Teddy Hogeborn
Client: Remove an incorrect "nonnull" attribute
733
__attribute__((nonnull(1, 2, 4), warn_unused_result))
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
734
static int init_gnutls_global(const char *pubkeyfilename,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
735
			      const char *seckeyfilename,
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
736
			      const char *dhparamsfilename,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
737
			      mandos_context *mc){
13 by Björn Påhlsson
Added following support:
738
  int ret;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
739
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
740
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
741
    fprintf_plus(stderr, "Initializing GnuTLS\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
742
  }
24.1.29 by Björn Påhlsson
Added more header file comments
743
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
744
  if(debug){
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
745
    /* "Use a log level over 10 to enable all debugging options."
746
     * - GnuTLS manual
747
     */
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
748
    gnutls_global_set_log_level(11);
749
    gnutls_global_set_log_function(debuggnutls);
750
  }
751
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
752
  /* OpenPGP credentials */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
753
  ret = gnutls_certificate_allocate_credentials(&mc->cred);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
754
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
755
    fprintf_plus(stderr, "GnuTLS memory error: %s\n",
756
		 safer_gnutls_strerror(ret));
13 by Björn Påhlsson
Added following support:
757
    return -1;
758
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
759
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
760
  if(debug){
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
761
    fprintf_plus(stderr, "Attempting to use public key %s and"
762
		 " private key %s as GnuTLS credentials\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
763
		 pubkeyfilename,
764
		 seckeyfilename);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
765
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
766
  
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
767
#if GNUTLS_VERSION_NUMBER >= 0x030606
768
  ret = gnutls_certificate_set_rawpk_key_file
769
    (mc->cred, pubkeyfilename, seckeyfilename,
770
     GNUTLS_X509_FMT_PEM,	/* format */
771
     NULL,			/* pass */
772
     /* key_usage */
773
     GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
774
     NULL, 			/* names */
775
     0,				/* names_length */
776
     /* privkey_flags */
777
     GNUTLS_PKCS_PLAIN | GNUTLS_PKCS_NULL_PASSWORD,
778
     0);			/* pkcs11_flags */
779
#elif GNUTLS_VERSION_NUMBER < 0x030600
13 by Björn Påhlsson
Added following support:
780
  ret = gnutls_certificate_set_openpgp_key_file
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
781
    (mc->cred, pubkeyfilename, seckeyfilename,
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
782
     GNUTLS_OPENPGP_FMT_BASE64);
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
783
#else
784
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
785
#endif
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
786
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
787
    fprintf_plus(stderr,
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
788
		 "Error[%d] while reading the key pair ('%s',"
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
789
		 " '%s')\n", ret, pubkeyfilename, seckeyfilename);
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
790
    fprintf_plus(stderr, "The GnuTLS error is: %s\n",
791
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
792
    goto globalfail;
13 by Björn Påhlsson
Added following support:
793
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
794
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
795
  /* GnuTLS server initialization */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
796
  ret = gnutls_dh_params_init(&mc->dh_params);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
797
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
798
    fprintf_plus(stderr, "Error in GnuTLS DH parameter"
799
		 " initialization: %s\n",
800
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
801
    goto globalfail;
13 by Björn Påhlsson
Added following support:
802
  }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
803
  /* If a Diffie-Hellman parameters file was given, try to use it */
804
  if(dhparamsfilename != NULL){
805
    gnutls_datum_t params = { .data = NULL, .size = 0 };
806
    do {
807
      int dhpfile = open(dhparamsfilename, O_RDONLY);
808
      if(dhpfile == -1){
809
	perror_plus("open");
810
	dhparamsfilename = NULL;
811
	break;
812
      }
813
      size_t params_capacity = 0;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
814
      while(true){
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
815
	params_capacity = incbuffer((char **)&params.data,
816
				    (size_t)params.size,
817
				    (size_t)params_capacity);
818
	if(params_capacity == 0){
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
819
	  perror_plus("incbuffer");
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
820
	  free(params.data);
821
	  params.data = NULL;
822
	  dhparamsfilename = NULL;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
823
	  break;
824
	}
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
825
	ssize_t bytes_read = read(dhpfile,
826
				  params.data + params.size,
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
827
				  BUFFER_SIZE);
828
	/* EOF */
829
	if(bytes_read == 0){
830
	  break;
831
	}
832
	/* check bytes_read for failure */
833
	if(bytes_read < 0){
834
	  perror_plus("read");
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
835
	  free(params.data);
836
	  params.data = NULL;
837
	  dhparamsfilename = NULL;
838
	  break;
839
	}
840
	params.size += (unsigned int)bytes_read;
841
      }
237.7.489 by Teddy Hogeborn
Check return values from newly added close() calls
842
      ret = close(dhpfile);
843
      if(ret == -1){
844
	perror_plus("close");
845
      }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
846
      if(params.data == NULL){
847
	dhparamsfilename = NULL;
848
      }
849
      if(dhparamsfilename == NULL){
850
	break;
851
      }
852
      ret = gnutls_dh_params_import_pkcs3(mc->dh_params, &params,
853
					  GNUTLS_X509_FMT_PEM);
854
      if(ret != GNUTLS_E_SUCCESS){
855
	fprintf_plus(stderr, "Failed to parse DH parameters in file"
856
		     " \"%s\": %s\n", dhparamsfilename,
857
		     safer_gnutls_strerror(ret));
858
	dhparamsfilename = NULL;
859
      }
237.7.425 by Teddy Hogeborn
Fix bug where Mandos client would crash on exit
860
      free(params.data);
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
861
    } while(false);
862
  }
863
  if(dhparamsfilename == NULL){
864
    if(mc->dh_bits == 0){
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
865
#if GNUTLS_VERSION_NUMBER < 0x030600
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
866
      /* Find out the optimal number of DH bits */
867
      /* Try to read the private key file */
868
      gnutls_datum_t buffer = { .data = NULL, .size = 0 };
869
      do {
870
	int secfile = open(seckeyfilename, O_RDONLY);
871
	if(secfile == -1){
872
	  perror_plus("open");
873
	  break;
874
	}
875
	size_t buffer_capacity = 0;
876
	while(true){
877
	  buffer_capacity = incbuffer((char **)&buffer.data,
878
				      (size_t)buffer.size,
879
				      (size_t)buffer_capacity);
880
	  if(buffer_capacity == 0){
881
	    perror_plus("incbuffer");
882
	    free(buffer.data);
883
	    buffer.data = NULL;
884
	    break;
885
	  }
886
	  ssize_t bytes_read = read(secfile,
887
				    buffer.data + buffer.size,
888
				    BUFFER_SIZE);
889
	  /* EOF */
890
	  if(bytes_read == 0){
891
	    break;
892
	  }
893
	  /* check bytes_read for failure */
894
	  if(bytes_read < 0){
895
	    perror_plus("read");
896
	    free(buffer.data);
897
	    buffer.data = NULL;
898
	    break;
899
	  }
900
	  buffer.size += (unsigned int)bytes_read;
901
	}
902
	close(secfile);
903
      } while(false);
904
      /* If successful, use buffer to parse private key */
905
      gnutls_sec_param_t sec_param = GNUTLS_SEC_PARAM_ULTRA;
906
      if(buffer.data != NULL){
907
	{
908
	  gnutls_openpgp_privkey_t privkey = NULL;
909
	  ret = gnutls_openpgp_privkey_init(&privkey);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
910
	  if(ret != GNUTLS_E_SUCCESS){
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
911
	    fprintf_plus(stderr, "Error initializing OpenPGP key"
912
			 " structure: %s",
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
913
			 safer_gnutls_strerror(ret));
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
914
	    free(buffer.data);
915
	    buffer.data = NULL;
916
	  } else {
917
	    ret = gnutls_openpgp_privkey_import
918
	      (privkey, &buffer, GNUTLS_OPENPGP_FMT_BASE64, "", 0);
919
	    if(ret != GNUTLS_E_SUCCESS){
920
	      fprintf_plus(stderr, "Error importing OpenPGP key : %s",
921
			   safer_gnutls_strerror(ret));
922
	      privkey = NULL;
923
	    }
924
	    free(buffer.data);
925
	    buffer.data = NULL;
926
	    if(privkey != NULL){
927
	      /* Use private key to suggest an appropriate
928
		 sec_param */
929
	      sec_param = gnutls_openpgp_privkey_sec_param(privkey);
930
	      gnutls_openpgp_privkey_deinit(privkey);
931
	      if(debug){
932
		fprintf_plus(stderr, "This OpenPGP key implies using"
933
			     " a GnuTLS security parameter \"%s\".\n",
934
			     safe_string(gnutls_sec_param_get_name
935
					 (sec_param)));
936
	      }
937
	    }
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
938
	  }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
939
	}
940
	if(sec_param == GNUTLS_SEC_PARAM_UNKNOWN){
941
	  /* Err on the side of caution */
942
	  sec_param = GNUTLS_SEC_PARAM_ULTRA;
943
	  if(debug){
944
	    fprintf_plus(stderr, "Falling back to security parameter"
945
			 " \"%s\"\n",
946
			 safe_string(gnutls_sec_param_get_name
947
				     (sec_param)));
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
948
	  }
949
	}
950
      }
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
951
      unsigned int uret = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, sec_param);
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
952
      if(uret != 0){
953
	mc->dh_bits = uret;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
954
	if(debug){
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
955
	  fprintf_plus(stderr, "A \"%s\" GnuTLS security parameter"
956
		       " implies %u DH bits; using that.\n",
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
957
		       safe_string(gnutls_sec_param_get_name
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
958
				   (sec_param)),
959
		       mc->dh_bits);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
960
	}
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
961
      } else {
962
	fprintf_plus(stderr, "Failed to get implied number of DH"
963
		     " bits for security parameter \"%s\"): %s\n",
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
964
		     safe_string(gnutls_sec_param_get_name
965
				 (sec_param)),
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
966
		     safer_gnutls_strerror(ret));
967
	goto globalfail;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
968
      }
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
969
#endif
970
    } else {			/* dh_bits != 0 */
971
      if(debug){
972
	fprintf_plus(stderr, "DH bits explicitly set to %u\n",
973
		     mc->dh_bits);
974
      }
975
      ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
976
      if(ret != GNUTLS_E_SUCCESS){
977
	fprintf_plus(stderr, "Error in GnuTLS prime generation (%u"
978
		     " bits): %s\n", mc->dh_bits,
979
		     safer_gnutls_strerror(ret));
980
	goto globalfail;
981
      }
982
      gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
983
    }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
984
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
985
  
24.1.13 by Björn Påhlsson
mandosclient
986
  return 0;
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
987
  
24.1.20 by Björn Påhlsson
mandosclient
988
 globalfail:
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
989
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
990
  gnutls_certificate_free_credentials(mc->cred);
991
  gnutls_dh_params_deinit(mc->dh_params);
24.1.20 by Björn Påhlsson
mandosclient
992
  return -1;
24.1.13 by Björn Påhlsson
mandosclient
993
}
994
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
995
__attribute__((nonnull, warn_unused_result))
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
996
static int init_gnutls_session(gnutls_session_t *session,
997
			       mandos_context *mc){
24.1.13 by Björn Påhlsson
mandosclient
998
  int ret;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
999
  /* GnuTLS session creation */
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1000
  do {
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
1001
    ret = gnutls_init(session, (GNUTLS_SERVER
1002
#if GNUTLS_VERSION_NUMBER >= 0x030506
1003
				| GNUTLS_NO_TICKETS
1004
#endif
1005
#if GNUTLS_VERSION_NUMBER >= 0x030606
1006
				| GNUTLS_ENABLE_RAWPK
1007
#endif
1008
				));
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1009
    if(quit_now){
1010
      return -1;
1011
    }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1012
  } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1013
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1014
    fprintf_plus(stderr,
1015
		 "Error in GnuTLS session initialization: %s\n",
1016
		 safer_gnutls_strerror(ret));
13 by Björn Påhlsson
Added following support:
1017
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1018
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1019
  {
1020
    const char *err;
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1021
    do {
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1022
      ret = gnutls_priority_set_direct(*session, mc->priority, &err);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1023
      if(quit_now){
1024
	gnutls_deinit(*session);
1025
	return -1;
1026
      }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1027
    } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1028
    if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1029
      fprintf_plus(stderr, "Syntax error at: %s\n", err);
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1030
      fprintf_plus(stderr, "GnuTLS error: %s\n",
1031
		   safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1032
      gnutls_deinit(*session);
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1033
      return -1;
1034
    }
13 by Björn Påhlsson
Added following support:
1035
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1036
  
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1037
  do {
1038
    ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1039
				 mc->cred);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1040
    if(quit_now){
1041
      gnutls_deinit(*session);
1042
      return -1;
1043
    }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1044
  } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1045
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1046
    fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1047
		 safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1048
    gnutls_deinit(*session);
13 by Björn Påhlsson
Added following support:
1049
    return -1;
1050
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1051
  
13 by Björn Påhlsson
Added following support:
1052
  /* ignore client certificate if any. */
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1053
  gnutls_certificate_server_set_request(*session, GNUTLS_CERT_IGNORE);
13 by Björn Påhlsson
Added following support:
1054
  
1055
  return 0;
1056
}
1057
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1058
/* Avahi log function callback */
36 by Teddy Hogeborn
* TODO: Converted to org-mode style
1059
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
1060
		      __attribute__((unused)) const char *txt){}
13 by Björn Påhlsson
Added following support:
1061
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1062
/* Helper function to add_local_route() and delete_local_route() */
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1063
__attribute__((nonnull, warn_unused_result))
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1064
static bool add_delete_local_route(const bool add,
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1065
				   const char *address,
1066
				   AvahiIfIndex if_index){
1067
  int ret;
1068
  char helper[] = "mandos-client-iprouteadddel";
1069
  char add_arg[] = "add";
237.25.4 by Teddy Hogeborn
Add plugin for mandos-client to add and delete local routes.
1070
  char delete_arg[] = "delete";
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1071
  char debug_flag[] = "--debug";
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1072
  char *pluginhelperdir = getenv("MANDOSPLUGINHELPERDIR");
1073
  if(pluginhelperdir == NULL){
1074
    if(debug){
1075
      fprintf_plus(stderr, "MANDOSPLUGINHELPERDIR environment"
1076
		   " variable not set; cannot run helper\n");
1077
    }
1078
    return false;
1079
  }
1080
  
1081
  char interface[IF_NAMESIZE];
1082
  if(if_indextoname((unsigned int)if_index, interface) == NULL){
1083
    perror_plus("if_indextoname");
1084
    return false;
1085
  }
1086
  
1087
  int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
1088
  if(devnull == -1){
1089
    perror_plus("open(\"/dev/null\", O_RDONLY)");
1090
    return false;
1091
  }
1092
  pid_t pid = fork();
1093
  if(pid == 0){
1094
    /* Child */
1095
    /* Raise privileges */
1096
    errno = raise_privileges_permanently();
1097
    if(errno != 0){
1098
      perror_plus("Failed to raise privileges");
1099
      /* _exit(EX_NOPERM); */
1100
    } else {
1101
      /* Set group */
1102
      errno = 0;
1103
      ret = setgid(0);
1104
      if(ret == -1){
1105
	perror_plus("setgid");
237.7.761 by teddy at recompile
Fix file descriptor leak in mandos-client
1106
	close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1107
	_exit(EX_NOPERM);
1108
      }
1109
      /* Reset supplementary groups */
1110
      errno = 0;
1111
      ret = setgroups(0, NULL);
1112
      if(ret == -1){
1113
	perror_plus("setgroups");
237.7.761 by teddy at recompile
Fix file descriptor leak in mandos-client
1114
	close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1115
	_exit(EX_NOPERM);
1116
      }
1117
    }
1118
    ret = dup2(devnull, STDIN_FILENO);
1119
    if(ret == -1){
1120
      perror_plus("dup2(devnull, STDIN_FILENO)");
237.7.761 by teddy at recompile
Fix file descriptor leak in mandos-client
1121
      close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1122
      _exit(EX_OSERR);
1123
    }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1124
    ret = close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1125
    if(ret == -1){
1126
      perror_plus("close");
1127
    }
1128
    ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1129
    if(ret == -1){
1130
      perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1131
      _exit(EX_OSERR);
1132
    }
1133
    int helperdir_fd = (int)TEMP_FAILURE_RETRY(open(pluginhelperdir,
1134
						    O_RDONLY
1135
						    | O_DIRECTORY
1136
						    | O_PATH
1137
						    | O_CLOEXEC));
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
1138
    if(helperdir_fd == -1){
1139
      perror_plus("open");
1140
      _exit(EX_UNAVAILABLE);
1141
    }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1142
    int helper_fd = (int)TEMP_FAILURE_RETRY(openat(helperdir_fd,
1143
						   helper, O_RDONLY));
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
1144
    if(helper_fd == -1){
1145
      perror_plus("openat");
237.7.323 by Teddy Hogeborn
plugin-runner: Minor fix: close helperdir before exiting in fork.
1146
      close(helperdir_fd);
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
1147
      _exit(EX_UNAVAILABLE);
1148
    }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1149
    close(helperdir_fd);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1150
#ifdef __GNUC__
1151
#pragma GCC diagnostic push
1152
#pragma GCC diagnostic ignored "-Wcast-qual"
1153
#endif
1154
    if(fexecve(helper_fd, (char *const [])
237.25.4 by Teddy Hogeborn
Add plugin for mandos-client to add and delete local routes.
1155
	       { helper, add ? add_arg : delete_arg, (char *)address,
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1156
		   interface, debug ? debug_flag : NULL, NULL },
1157
	       environ) == -1){
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1158
#ifdef __GNUC__
1159
#pragma GCC diagnostic pop
1160
#endif
1161
      perror_plus("fexecve");
1162
      _exit(EXIT_FAILURE);
1163
    }
1164
  }
1165
  if(pid == -1){
1166
    perror_plus("fork");
237.7.761 by teddy at recompile
Fix file descriptor leak in mandos-client
1167
    close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1168
    return false;
1169
  }
237.7.761 by teddy at recompile
Fix file descriptor leak in mandos-client
1170
  ret = close(devnull);
1171
  if(ret == -1){
1172
    perror_plus("close");
1173
  }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1174
  int status;
1175
  pid_t pret = -1;
1176
  errno = 0;
1177
  do {
1178
    pret = waitpid(pid, &status, 0);
1179
    if(pret == -1 and errno == EINTR and quit_now){
1180
      int errno_raising = 0;
1181
      if((errno = raise_privileges()) != 0){
1182
	errno_raising = errno;
1183
	perror_plus("Failed to raise privileges in order to"
1184
		    " kill helper program");
1185
      }
1186
      if(kill(pid, SIGTERM) == -1){
1187
	perror_plus("kill");
1188
      }
1189
      if((errno_raising == 0) and (errno = lower_privileges()) != 0){
1190
	perror_plus("Failed to lower privileges after killing"
1191
		    " helper program");
1192
      }
1193
      return false;
1194
    }
1195
  } while(pret == -1 and errno == EINTR);
1196
  if(pret == -1){
1197
    perror_plus("waitpid");
1198
    return false;
1199
  }
1200
  if(WIFEXITED(status)){
1201
    if(WEXITSTATUS(status) != 0){
1202
      fprintf_plus(stderr, "Error: iprouteadddel exited"
1203
		   " with status %d\n", WEXITSTATUS(status));
1204
      return false;
1205
    }
1206
    return true;
1207
  }
1208
  if(WIFSIGNALED(status)){
1209
    fprintf_plus(stderr, "Error: iprouteadddel died by"
1210
		 " signal %d\n", WTERMSIG(status));
1211
    return false;
1212
  }
1213
  fprintf_plus(stderr, "Error: iprouteadddel crashed\n");
1214
  return false;
1215
}
1216
1217
__attribute__((nonnull, warn_unused_result))
1218
static bool add_local_route(const char *address,
1219
			    AvahiIfIndex if_index){
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1220
  if(debug){
1221
    fprintf_plus(stderr, "Adding route to %s\n", address);
1222
  }
1223
  return add_delete_local_route(true, address, if_index);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1224
}
1225
1226
__attribute__((nonnull, warn_unused_result))
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1227
static bool delete_local_route(const char *address,
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1228
			       AvahiIfIndex if_index){
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1229
  if(debug){
1230
    fprintf_plus(stderr, "Removing route to %s\n", address);
1231
  }
1232
  return add_delete_local_route(false, address, if_index);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1233
}
1234
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1235
/* Called when a Mandos server is found */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1236
__attribute__((nonnull, warn_unused_result))
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1237
static int start_mandos_communication(const char *ip, in_port_t port,
24.1.9 by Björn Påhlsson
not working midwork...
1238
				      AvahiIfIndex if_index,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1239
				      int af, mandos_context *mc){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1240
  int ret, tcp_sd = -1;
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1241
  ssize_t sret;
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1242
  struct sockaddr_storage to;
13 by Björn Påhlsson
Added following support:
1243
  char *buffer = NULL;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1244
  char *decrypted_buffer = NULL;
13 by Björn Påhlsson
Added following support:
1245
  size_t buffer_length = 0;
1246
  size_t buffer_capacity = 0;
24.1.10 by Björn Påhlsson
merge commit
1247
  size_t written;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1248
  int retval = -1;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1249
  gnutls_session_t session;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1250
  int pf;			/* Protocol family */
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1251
  bool route_added = false;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1252
  
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1253
  errno = 0;
1254
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1255
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1256
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1257
    return -1;
1258
  }
1259
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1260
  switch(af){
1261
  case AF_INET6:
1262
    pf = PF_INET6;
1263
    break;
1264
  case AF_INET:
1265
    pf = PF_INET;
1266
    break;
1267
  default:
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1268
    fprintf_plus(stderr, "Bad address family: %d\n", af);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1269
    errno = EINVAL;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1270
    return -1;
1271
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1272
  
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
1273
  /* If the interface is specified and we have a list of interfaces */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
1274
  if(if_index != AVAHI_IF_UNSPEC and mc->interfaces != NULL){
1275
    /* Check if the interface is one of the interfaces we are using */
1276
    bool match = false;
1277
    {
1278
      char *interface = NULL;
237.7.438 by Teddy Hogeborn
Add spaces around all '=' signs in all C code.
1279
      while((interface = argz_next(mc->interfaces,
1280
				   mc->interfaces_size,
1281
				   interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
1282
	if(if_nametoindex(interface) == (unsigned int)if_index){
1283
	  match = true;
1284
	  break;
1285
	}
1286
      }
1287
    }
1288
    if(not match){
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
1289
      /* This interface does not match any in the list, so we don't
1290
	 connect to the server */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
1291
      if(debug){
1292
	char interface[IF_NAMESIZE];
1293
	if(if_indextoname((unsigned int)if_index, interface) == NULL){
1294
	  perror_plus("if_indextoname");
1295
	} else {
1296
	  fprintf_plus(stderr, "Skipping server on non-used interface"
1297
		       " \"%s\"\n",
1298
		       if_indextoname((unsigned int)if_index,
1299
				      interface));
1300
	}
1301
      }
1302
      return -1;
1303
    }
1304
  }
1305
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1306
  ret = init_gnutls_session(&session, mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1307
  if(ret != 0){
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1308
    return -1;
1309
  }
1310
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1311
  if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1312
    fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1313
		 PRIuMAX "\n", ip, (uintmax_t)port);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1314
  }
13 by Björn Påhlsson
Added following support:
1315
  
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1316
  tcp_sd = socket(pf, SOCK_STREAM | SOCK_CLOEXEC, 0);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1317
  if(tcp_sd < 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1318
    int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1319
    perror_plus("socket");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1320
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1321
    goto mandos_end;
1322
  }
1323
  
1324
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1325
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1326
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
1327
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1328
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1329
  if(af == AF_INET6){
237.7.321 by Teddy Hogeborn
mandos-client: Don't use memset().
1330
    struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&to;
1331
    *to6 = (struct sockaddr_in6){ .sin6_family = (sa_family_t)af };
1332
    ret = inet_pton(af, ip, &to6->sin6_addr);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1333
  } else {			/* IPv4 */
237.7.321 by Teddy Hogeborn
mandos-client: Don't use memset().
1334
    struct sockaddr_in *to4 = (struct sockaddr_in *)&to;
1335
    *to4 = (struct sockaddr_in){ .sin_family = (sa_family_t)af };
1336
    ret = inet_pton(af, ip, &to4->sin_addr);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1337
  }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1338
  if(ret < 0 ){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1339
    int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1340
    perror_plus("inet_pton");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1341
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1342
    goto mandos_end;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1343
  }
13 by Björn Påhlsson
Added following support:
1344
  if(ret == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1345
    int e = errno;
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1346
    fprintf_plus(stderr, "Bad address: %s\n", ip);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1347
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1348
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
1349
  }
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1350
  if(af == AF_INET6){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1351
    ((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1352
    if(IN6_IS_ADDR_LINKLOCAL
1353
       (&((struct sockaddr_in6 *)&to)->sin6_addr)){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1354
      if(if_index == AVAHI_IF_UNSPEC){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1355
	fprintf_plus(stderr, "An IPv6 link-local address is"
1356
		     " incomplete without a network interface\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1357
	errno = EINVAL;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1358
	goto mandos_end;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1359
      }
1360
      /* Set the network interface number as scope */
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1361
      ((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1362
    }
1363
  } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1364
    ((struct sockaddr_in *)&to)->sin_port = htons(port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1365
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1366
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1367
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1368
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1369
    goto mandos_end;
1370
  }
1371
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1372
  if(debug){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1373
    if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
1374
      char interface[IF_NAMESIZE];
1375
      if(if_indextoname((unsigned int)if_index, interface) == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1376
	perror_plus("if_indextoname");
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1377
      } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1378
	fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIuMAX
1379
		     "\n", ip, interface, (uintmax_t)port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1380
      }
1381
    } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1382
      fprintf_plus(stderr, "Connection to: %s, port %" PRIuMAX "\n",
1383
		   ip, (uintmax_t)port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1384
    }
1385
    char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
1386
		 INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
1387
    if(af == AF_INET6){
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1388
      ret = getnameinfo((struct sockaddr *)&to,
1389
			sizeof(struct sockaddr_in6),
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
1390
			addrstr, sizeof(addrstr), NULL, 0,
1391
			NI_NUMERICHOST);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1392
    } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1393
      ret = getnameinfo((struct sockaddr *)&to,
1394
			sizeof(struct sockaddr_in),
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
1395
			addrstr, sizeof(addrstr), NULL, 0,
1396
			NI_NUMERICHOST);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1397
    }
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
1398
    if(ret == EAI_SYSTEM){
1399
      perror_plus("getnameinfo");
1400
    } else if(ret != 0) {
1401
      fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
1402
    } else if(strcmp(addrstr, ip) != 0){
1403
      fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
1404
    }
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1405
  }
13 by Björn Påhlsson
Added following support:
1406
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1407
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1408
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1409
    goto mandos_end;
1410
  }
1411
  
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1412
  while(true){
1413
    if(af == AF_INET6){
1414
      ret = connect(tcp_sd, (struct sockaddr *)&to,
1415
		    sizeof(struct sockaddr_in6));
1416
    } else {
1417
      ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
1418
		    sizeof(struct sockaddr_in));
1419
    }
1420
    if(ret < 0){
237.7.338 by Teddy Hogeborn
Bug fix: Add local route also when host is unreachable.
1421
      if(((errno == ENETUNREACH) or (errno == EHOSTUNREACH))
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1422
	 and if_index != AVAHI_IF_UNSPEC
1423
	 and connect_to == NULL
1424
	 and not route_added and
1425
	 ((af == AF_INET6 and not
1426
	   IN6_IS_ADDR_LINKLOCAL(&(((struct sockaddr_in6 *)
1427
				    &to)->sin6_addr)))
1428
	  or (af == AF_INET and
1429
	      /* Not a a IPv4LL address */
1430
	      (ntohl(((struct sockaddr_in *)&to)->sin_addr.s_addr)
1431
	       & 0xFFFF0000L) != 0xA9FE0000L))){
1432
	/* Work around Avahi bug - Avahi does not announce link-local
1433
	   addresses if it has a global address, so local hosts with
1434
	   *only* a link-local address (e.g. Mandos clients) cannot
1435
	   connect to a Mandos server announced by Avahi on a server
1436
	   host with a global address.  Work around this by retrying
1437
	   with an explicit route added with the server's address.
1438
	   
1439
	   Avahi bug reference:
237.7.416 by Teddy Hogeborn
Change all http:// URLs to https:// wherever possible.
1440
	   https://lists.freedesktop.org/archives/avahi/2010-February/001833.html
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1441
	   https://bugs.debian.org/587961
1442
	*/
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1443
	if(debug){
1444
	  fprintf_plus(stderr, "Mandos server unreachable, trying"
1445
		       " direct route\n");
1446
	}
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1447
	int e = errno;
1448
	route_added = add_local_route(ip, if_index);
1449
	if(route_added){
1450
	  continue;
1451
	}
1452
	errno = e;
1453
      }
1454
      if(errno != ECONNREFUSED or debug){
1455
	int e = errno;
1456
	perror_plus("connect");
1457
	errno = e;
1458
      }
1459
      goto mandos_end;
1460
    }
1461
    
1462
    if(quit_now){
1463
      errno = EINTR;
1464
      goto mandos_end;
1465
    }
1466
    break;
13 by Björn Påhlsson
Added following support:
1467
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1468
  
24.1.12 by Björn Påhlsson
merge +
1469
  const char *out = mandos_protocol_version;
24.1.10 by Björn Påhlsson
merge commit
1470
  written = 0;
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1471
  while(true){
24.1.10 by Björn Påhlsson
merge commit
1472
    size_t out_size = strlen(out);
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1473
    ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1474
					out_size - written));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1475
    if(ret == -1){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1476
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1477
      perror_plus("write");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1478
      errno = e;
24.1.12 by Björn Påhlsson
merge +
1479
      goto mandos_end;
24.1.10 by Björn Påhlsson
merge commit
1480
    }
24.1.12 by Björn Påhlsson
merge +
1481
    written += (size_t)ret;
24.1.10 by Björn Påhlsson
merge commit
1482
    if(written < out_size){
1483
      continue;
1484
    } else {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1485
      if(out == mandos_protocol_version){
24.1.10 by Björn Påhlsson
merge commit
1486
	written = 0;
1487
	out = "\r\n";
1488
      } else {
1489
	break;
1490
      }
1491
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1492
  
1493
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1494
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1495
      goto mandos_end;
1496
    }
24.1.10 by Björn Påhlsson
merge commit
1497
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1498
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1499
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1500
    fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1501
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1502
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1503
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1504
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1505
    goto mandos_end;
1506
  }
1507
  
237.7.136 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Eliminate
1508
  /* This casting via intptr_t is to eliminate warning about casting
1509
     an int to a pointer type.  This is exactly how the GnuTLS Guile
1510
     function "set-session-transport-fd!" does it. */
1511
  gnutls_transport_set_ptr(session,
1512
			   (gnutls_transport_ptr_t)(intptr_t)tcp_sd);
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1513
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1514
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1515
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1516
    goto mandos_end;
1517
  }
1518
  
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1519
  do {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1520
    ret = gnutls_handshake(session);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1521
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1522
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1523
      goto mandos_end;
1524
    }
24.1.29 by Björn Påhlsson
Added more header file comments
1525
  } while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
13 by Björn Påhlsson
Added following support:
1526
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1527
  if(ret != GNUTLS_E_SUCCESS){
25 by Teddy Hogeborn
* mandos-clients.conf ([DEFAULT]): New section.
1528
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1529
      fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1530
      gnutls_perror(ret);
25 by Teddy Hogeborn
* mandos-clients.conf ([DEFAULT]): New section.
1531
    }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1532
    errno = EPROTO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1533
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
1534
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1535
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1536
  /* Read OpenPGP packet that contains the wanted password */
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1537
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1538
  if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1539
    fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
1540
		 " %s\n", ip);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1541
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1542
  
13 by Björn Påhlsson
Added following support:
1543
  while(true){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1544
    
1545
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1546
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1547
      goto mandos_end;
1548
    }
1549
    
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
1550
    buffer_capacity = incbuffer(&buffer, buffer_length,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1551
				buffer_capacity);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1552
    if(buffer_capacity == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1553
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1554
      perror_plus("incbuffer");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1555
      errno = e;
24.1.12 by Björn Påhlsson
merge +
1556
      goto mandos_end;
13 by Björn Påhlsson
Added following support:
1557
    }
1558
    
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1559
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1560
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1561
      goto mandos_end;
1562
    }
1563
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1564
    sret = gnutls_record_recv(session, buffer+buffer_length,
1565
			      BUFFER_SIZE);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1566
    if(sret == 0){
13 by Björn Påhlsson
Added following support:
1567
      break;
1568
    }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1569
    if(sret < 0){
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1570
      switch(sret){
13 by Björn Påhlsson
Added following support:
1571
      case GNUTLS_E_INTERRUPTED:
1572
      case GNUTLS_E_AGAIN:
1573
	break;
1574
      case GNUTLS_E_REHANDSHAKE:
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1575
	do {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1576
	  ret = gnutls_handshake(session);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1577
	  
1578
	  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1579
	    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1580
	    goto mandos_end;
1581
	  }
24.1.29 by Björn Påhlsson
Added more header file comments
1582
	} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1583
	if(ret < 0){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1584
	  fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
1585
		       "***\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1586
	  gnutls_perror(ret);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1587
	  errno = EPROTO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1588
	  goto mandos_end;
13 by Björn Påhlsson
Added following support:
1589
	}
1590
	break;
1591
      default:
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1592
	fprintf_plus(stderr, "Unknown error while reading data from"
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1593
		     " encrypted session with Mandos server\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1594
	gnutls_bye(session, GNUTLS_SHUT_RDWR);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1595
	errno = EIO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1596
	goto mandos_end;
13 by Björn Påhlsson
Added following support:
1597
      }
1598
    } else {
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1599
      buffer_length += (size_t) sret;
13 by Björn Påhlsson
Added following support:
1600
    }
1601
  }
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1602
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1603
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1604
    fprintf_plus(stderr, "Closing TLS session\n");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1605
  }
1606
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1607
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1608
    errno = EINTR;
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1609
    goto mandos_end;
1610
  }
1611
  
1612
  do {
1613
    ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
1614
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1615
      errno = EINTR;
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1616
      goto mandos_end;
1617
    }
1618
  } while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1619
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1620
  if(buffer_length > 0){
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
1621
    ssize_t decrypted_buffer_size;
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1622
    decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1623
					       &decrypted_buffer, mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1624
    if(decrypted_buffer_size >= 0){
237.2.124 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gpgme): Move variable "ret" into the
1625
      
237.7.414 by Teddy Hogeborn
mandos-client: Bug fix: flush stdout to detect write errors.
1626
      clearerr(stdout);
24.1.10 by Björn Påhlsson
merge commit
1627
      written = 0;
28 by Teddy Hogeborn
* server.conf: New file.
1628
      while(written < (size_t) decrypted_buffer_size){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1629
	if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1630
	  errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1631
	  goto mandos_end;
1632
	}
1633
	
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1634
	ret = (int)fwrite(decrypted_buffer + written, 1,
1635
			  (size_t)decrypted_buffer_size - written,
1636
			  stdout);
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1637
	if(ret == 0 and ferror(stdout)){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1638
	  int e = errno;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1639
	  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1640
	    fprintf_plus(stderr, "Error writing encrypted data: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1641
			 strerror(errno));
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1642
	  }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1643
	  errno = e;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1644
	  goto mandos_end;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1645
	}
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1646
	written += (size_t)ret;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1647
      }
237.7.414 by Teddy Hogeborn
mandos-client: Bug fix: flush stdout to detect write errors.
1648
      ret = fflush(stdout);
1649
      if(ret != 0){
1650
	int e = errno;
1651
	if(debug){
1652
	  fprintf_plus(stderr, "Error writing encrypted data: %s\n",
1653
		       strerror(errno));
1654
	}
1655
	errno = e;
1656
	goto mandos_end;
1657
      }
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1658
      retval = 0;
13 by Björn Påhlsson
Added following support:
1659
    }
1660
  }
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1661
  
1662
  /* Shutdown procedure */
1663
  
1664
 mandos_end:
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1665
  {
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1666
    if(route_added){
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1667
      if(not delete_local_route(ip, if_index)){
1668
	fprintf_plus(stderr, "Failed to delete local route to %s on"
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1669
		     " interface %d", ip, if_index);
1670
      }
1671
    }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1672
    int e = errno;
1673
    free(decrypted_buffer);
1674
    free(buffer);
1675
    if(tcp_sd >= 0){
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1676
      ret = close(tcp_sd);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1677
    }
1678
    if(ret == -1){
1679
      if(e == 0){
1680
	e = errno;
1681
      }
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1682
      perror_plus("close");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1683
    }
1684
    gnutls_deinit(session);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1685
    errno = e;
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1686
    if(quit_now){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1687
      errno = EINTR;
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1688
      retval = -1;
1689
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1690
  }
13 by Björn Påhlsson
Added following support:
1691
  return retval;
1692
}
1693
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
1694
static void resolve_callback(AvahiSServiceResolver *r,
1695
			     AvahiIfIndex interface,
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1696
			     AvahiProtocol proto,
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
1697
			     AvahiResolverEvent event,
1698
			     const char *name,
1699
			     const char *type,
1700
			     const char *domain,
1701
			     const char *host_name,
1702
			     const AvahiAddress *address,
1703
			     uint16_t port,
1704
			     AVAHI_GCC_UNUSED AvahiStringList *txt,
1705
			     AVAHI_GCC_UNUSED AvahiLookupResultFlags
1706
			     flags,
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1707
			     void *mc){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1708
  if(r == NULL){
1709
    return;
1710
  }
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1711
  
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1712
  /* Called whenever a service has been resolved successfully or
1713
     timed out */
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1714
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
1715
  if(quit_now){
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
1716
    avahi_s_service_resolver_free(r);
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
1717
    return;
1718
  }
1719
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1720
  switch(event){
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1721
  default:
1722
  case AVAHI_RESOLVER_FAILURE:
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1723
    fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1724
		 "'%s' of type '%s' in domain '%s': %s\n", name, type,
1725
		 domain,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1726
		 avahi_strerror(avahi_server_errno
1727
				(((mandos_context*)mc)->server)));
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1728
    break;
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1729
    
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1730
  case AVAHI_RESOLVER_FOUND:
1731
    {
1732
      char ip[AVAHI_ADDRESS_STR_MAX];
1733
      avahi_address_snprint(ip, sizeof(ip), address);
1734
      if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1735
	fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1736
		     PRIdMAX ") on port %" PRIu16 "\n", name,
1737
		     host_name, ip, (intmax_t)interface, port);
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1738
      }
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1739
      int ret = start_mandos_communication(ip, (in_port_t)port,
1740
					   interface,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1741
					   avahi_proto_to_af(proto),
1742
					   mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1743
      if(ret == 0){
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1744
	avahi_simple_poll_quit(simple_poll);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1745
      } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1746
	if(not add_server(ip, (in_port_t)port, interface,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1747
			  avahi_proto_to_af(proto),
1748
			  &((mandos_context*)mc)->current_server)){
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
1749
	  fprintf_plus(stderr, "Failed to add server \"%s\" to server"
1750
		       " list\n", name);
1751
	}
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1752
      }
13 by Björn Påhlsson
Added following support:
1753
    }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1754
  }
1755
  avahi_s_service_resolver_free(r);
13 by Björn Påhlsson
Added following support:
1756
}
1757
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1758
static void browse_callback(AvahiSServiceBrowser *b,
1759
			    AvahiIfIndex interface,
1760
			    AvahiProtocol protocol,
1761
			    AvahiBrowserEvent event,
1762
			    const char *name,
1763
			    const char *type,
1764
			    const char *domain,
1765
			    AVAHI_GCC_UNUSED AvahiLookupResultFlags
1766
			    flags,
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1767
			    void *mc){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1768
  if(b == NULL){
1769
    return;
1770
  }
24.1.9 by Björn Påhlsson
not working midwork...
1771
  
1772
  /* Called whenever a new services becomes available on the LAN or
1773
     is removed from the LAN */
1774
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1775
  if(quit_now){
1776
    return;
1777
  }
1778
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1779
  switch(event){
24.1.9 by Björn Påhlsson
not working midwork...
1780
  default:
1781
  case AVAHI_BROWSER_FAILURE:
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1782
    
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1783
    fprintf_plus(stderr, "(Avahi browser) %s\n",
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1784
		 avahi_strerror(avahi_server_errno
1785
				(((mandos_context*)mc)->server)));
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1786
    avahi_simple_poll_quit(simple_poll);
24.1.9 by Björn Påhlsson
not working midwork...
1787
    return;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1788
    
24.1.9 by Björn Påhlsson
not working midwork...
1789
  case AVAHI_BROWSER_NEW:
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1790
    /* We ignore the returned Avahi resolver object. In the callback
1791
       function we free it. If the Avahi server is terminated before
1792
       the callback function is called the Avahi server will free the
1793
       resolver for us. */
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1794
    
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1795
    if(avahi_s_service_resolver_new(((mandos_context*)mc)->server,
1796
				    interface, protocol, name, type,
1797
				    domain, protocol, 0,
1798
				    resolve_callback, mc) == NULL)
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1799
      fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1800
		   " %s\n", name,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1801
		   avahi_strerror(avahi_server_errno
1802
				  (((mandos_context*)mc)->server)));
24.1.9 by Björn Påhlsson
not working midwork...
1803
    break;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1804
    
24.1.9 by Björn Påhlsson
not working midwork...
1805
  case AVAHI_BROWSER_REMOVE:
1806
    break;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1807
    
24.1.9 by Björn Påhlsson
not working midwork...
1808
  case AVAHI_BROWSER_ALL_FOR_NOW:
1809
  case AVAHI_BROWSER_CACHE_EXHAUSTED:
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1810
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1811
      fprintf_plus(stderr, "No Mandos server found, still"
1812
		   " searching...\n");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1813
    }
24.1.9 by Björn Påhlsson
not working midwork...
1814
    break;
1815
  }
13 by Björn Påhlsson
Added following support:
1816
}
1817
237.7.33 by Teddy Hogeborn
Merge from Björn.
1818
/* Signal handler that stops main loop after SIGTERM */
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
1819
static void handle_sigterm(int sig){
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
1820
  if(quit_now){
1821
    return;
1822
  }
1823
  quit_now = 1;
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
1824
  signal_received = sig;
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1825
  int old_errno = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1826
  /* set main loop to exit */
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1827
  if(simple_poll != NULL){
1828
    avahi_simple_poll_quit(simple_poll);
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
1829
  }
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1830
  errno = old_errno;
1831
}
1832
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1833
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1834
bool get_flags(const char *ifname, struct ifreq *ifr){
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1835
  int ret;
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
1836
  int old_errno;
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1837
  
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1838
  int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1839
  if(s < 0){
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
1840
    old_errno = errno;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1841
    perror_plus("socket");
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
1842
    errno = old_errno;
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1843
    return false;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1844
  }
237.7.346 by Teddy Hogeborn
plugins.d/mandos-client.c (get_flags): Use strncpy(), not strcpy().
1845
  strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
1846
  ifr->ifr_name[IF_NAMESIZE-1] = '\0'; /* NUL terminate */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1847
  ret = ioctl(s, SIOCGIFFLAGS, ifr);
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1848
  if(ret == -1){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1849
    if(debug){
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
1850
      old_errno = errno;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1851
      perror_plus("ioctl SIOCGIFFLAGS");
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
1852
      errno = old_errno;
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1853
    }
237.7.489 by Teddy Hogeborn
Check return values from newly added close() calls
1854
    if((close(s) == -1) and debug){
1855
      old_errno = errno;
1856
      perror_plus("close");
1857
      errno = old_errno;
1858
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1859
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1860
  }
237.7.489 by Teddy Hogeborn
Check return values from newly added close() calls
1861
  if((close(s) == -1) and debug){
1862
    old_errno = errno;
1863
    perror_plus("close");
1864
    errno = old_errno;
1865
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1866
  return true;
1867
}
1868
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1869
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1870
bool good_flags(const char *ifname, const struct ifreq *ifr){
1871
  
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1872
  /* Reject the loopback device */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1873
  if(ifr->ifr_flags & IFF_LOOPBACK){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1874
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1875
      fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1876
		   ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1877
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1878
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1879
  }
1880
  /* Accept point-to-point devices only if connect_to is specified */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1881
  if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1882
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1883
      fprintf_plus(stderr, "Accepting point-to-point interface"
1884
		   " \"%s\"\n", ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1885
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1886
    return true;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1887
  }
1888
  /* Otherwise, reject non-broadcast-capable devices */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1889
  if(not (ifr->ifr_flags & IFF_BROADCAST)){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1890
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1891
      fprintf_plus(stderr, "Rejecting non-broadcast interface"
1892
		   " \"%s\"\n", ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1893
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1894
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1895
  }
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1896
  /* Reject non-ARP interfaces (including dummy interfaces) */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1897
  if(ifr->ifr_flags & IFF_NOARP){
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1898
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1899
      fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1900
		   ifname);
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1901
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1902
    return false;
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1903
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1904
  
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1905
  /* Accept this device */
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1906
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1907
    fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1908
  }
1909
  return true;
1910
}
1911
1912
/* 
1913
 * This function determines if a directory entry in /sys/class/net
1914
 * corresponds to an acceptable network device.
1915
 * (This function is passed to scandir(3) as a filter function.)
1916
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1917
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1918
int good_interface(const struct dirent *if_entry){
1919
  if(if_entry->d_name[0] == '.'){
1920
    return 0;
1921
  }
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1922
  
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1923
  struct ifreq ifr;
1924
  if(not get_flags(if_entry->d_name, &ifr)){
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1925
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1926
      fprintf_plus(stderr, "Failed to get flags for interface "
1927
		   "\"%s\"\n", if_entry->d_name);
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1928
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1929
    return 0;
1930
  }
1931
  
1932
  if(not good_flags(if_entry->d_name, &ifr)){
1933
    return 0;
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1934
  }
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1935
  return 1;
1936
}
1937
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1938
/* 
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1939
 * This function determines if a network interface is up.
1940
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1941
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1942
bool interface_is_up(const char *interface){
1943
  struct ifreq ifr;
1944
  if(not get_flags(interface, &ifr)){
1945
    if(debug){
1946
      fprintf_plus(stderr, "Failed to get flags for interface "
1947
		   "\"%s\"\n", interface);
1948
    }
1949
    return false;
1950
  }
1951
  
1952
  return (bool)(ifr.ifr_flags & IFF_UP);
1953
}
1954
1955
/* 
1956
 * This function determines if a network interface is running
1957
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1958
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1959
bool interface_is_running(const char *interface){
1960
  struct ifreq ifr;
1961
  if(not get_flags(interface, &ifr)){
1962
    if(debug){
1963
      fprintf_plus(stderr, "Failed to get flags for interface "
1964
		   "\"%s\"\n", interface);
1965
    }
1966
    return false;
1967
  }
1968
  
1969
  return (bool)(ifr.ifr_flags & IFF_RUNNING);
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1970
}
1971
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1972
__attribute__((nonnull, pure, warn_unused_result))
24.1.172 by Björn Påhlsson
using scandir instead of readdir
1973
int notdotentries(const struct dirent *direntry){
1974
  /* Skip "." and ".." */
1975
  if(direntry->d_name[0] == '.'
1976
     and (direntry->d_name[1] == '\0'
1977
	  or (direntry->d_name[1] == '.'
1978
	      and direntry->d_name[2] == '\0'))){
1979
    return 0;
1980
  }
1981
  return 1;
1982
}
1983
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1984
/* Is this directory entry a runnable program? */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1985
__attribute__((nonnull, warn_unused_result))
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1986
int runnable_hook(const struct dirent *direntry){
1987
  int ret;
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1988
  size_t sret;
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1989
  struct stat st;
1990
  
1991
  if((direntry->d_name)[0] == '\0'){
1992
    /* Empty name? */
1993
    return 0;
1994
  }
1995
  
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1996
  sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1997
		"abcdefghijklmnopqrstuvwxyz"
1998
		"0123456789"
237.7.236 by Teddy Hogeborn
Minor bug fix in mandos-client: Allow periods in network hook names.
1999
		"_.-");
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2000
  if((direntry->d_name)[sret] != '\0'){
2001
    /* Contains non-allowed characters */
2002
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2003
      fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2004
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2005
    }
2006
    return 0;
2007
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2008
  
237.7.241 by Teddy Hogeborn
Make mandos-client use fstatat().
2009
  ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2010
  if(ret == -1){
2011
    if(debug){
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2012
      perror_plus("Could not stat hook");
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2013
    }
2014
    return 0;
2015
  }
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
2016
  if(not (S_ISREG(st.st_mode))){
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2017
    /* Not a regular file */
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2018
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2019
      fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2020
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2021
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2022
    return 0;
2023
  }
2024
  if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
2025
    /* Not executable */
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2026
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2027
      fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2028
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
2029
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2030
    return 0;
2031
  }
237.16.12 by Teddy Hogeborn
* plugins.d/mandos-client.c (runnable_hook): Add debug output.
2032
  if(debug){
2033
    fprintf_plus(stderr, "Hook \"%s\" is acceptable\n",
2034
		 direntry->d_name);
2035
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2036
  return 1;
2037
}
2038
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2039
__attribute__((nonnull, warn_unused_result))
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2040
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
2041
			    mandos_context *mc){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2042
  int ret;
2043
  struct timespec now;
2044
  struct timespec waited_time;
2045
  intmax_t block_time;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2046
  
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2047
  while(true){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2048
    if(mc->current_server == NULL){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
2049
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2050
	fprintf_plus(stderr, "Wait until first server is found."
2051
		     " No timeout!\n");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2052
      }
2053
      ret = avahi_simple_poll_iterate(s, -1);
2054
    } else {
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
2055
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2056
	fprintf_plus(stderr, "Check current_server if we should run"
2057
		     " it, or wait\n");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2058
      }
2059
      /* the current time */
2060
      ret = clock_gettime(CLOCK_MONOTONIC, &now);
2061
      if(ret == -1){
2062
	perror_plus("clock_gettime");
2063
	return -1;
2064
      }
2065
      /* Calculating in ms how long time between now and server
2066
	 who we visted longest time ago. Now - last seen.  */
237.7.33 by Teddy Hogeborn
Merge from Björn.
2067
      waited_time.tv_sec = (now.tv_sec
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2068
			    - mc->current_server->last_seen.tv_sec);
237.7.33 by Teddy Hogeborn
Merge from Björn.
2069
      waited_time.tv_nsec = (now.tv_nsec
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2070
			     - mc->current_server->last_seen.tv_nsec);
237.7.33 by Teddy Hogeborn
Merge from Björn.
2071
      /* total time is 10s/10,000ms.
2072
	 Converting to s from ms by dividing by 1,000,
2073
	 and ns to ms by dividing by 1,000,000. */
2074
      block_time = ((retry_interval
2075
		     - ((intmax_t)waited_time.tv_sec * 1000))
2076
		    - ((intmax_t)waited_time.tv_nsec / 1000000));
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2077
      
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
2078
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2079
	fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
2080
		     block_time);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2081
      }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2082
      
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2083
      if(block_time <= 0){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2084
	ret = start_mandos_communication(mc->current_server->ip,
2085
					 mc->current_server->port,
2086
					 mc->current_server->if_index,
2087
					 mc->current_server->af, mc);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2088
	if(ret == 0){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2089
	  avahi_simple_poll_quit(s);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2090
	  return 0;
2091
	}
237.7.33 by Teddy Hogeborn
Merge from Björn.
2092
	ret = clock_gettime(CLOCK_MONOTONIC,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2093
			    &mc->current_server->last_seen);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2094
	if(ret == -1){
2095
	  perror_plus("clock_gettime");
2096
	  return -1;
2097
	}
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2098
	mc->current_server = mc->current_server->next;
237.7.33 by Teddy Hogeborn
Merge from Björn.
2099
	block_time = 0; 	/* Call avahi to find new Mandos
2100
				   servers, but don't block */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2101
      }
2102
      
2103
      ret = avahi_simple_poll_iterate(s, (int)block_time);
2104
    }
2105
    if(ret != 0){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
2106
      if(ret > 0 or errno != EINTR){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2107
	return (ret != 1) ? ret : 0;
2108
      }
2109
    }
2110
  }
2111
}
2112
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2113
__attribute__((nonnull))
2114
void run_network_hooks(const char *mode, const char *interface,
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2115
		       const float delay){
237.7.252 by Teddy Hogeborn
mandos-client: Fix some bugs on error conditions.
2116
  struct dirent **direntries = NULL;
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2117
  if(hookdir_fd == -1){
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2118
    hookdir_fd = open(hookdir, O_RDONLY | O_DIRECTORY | O_PATH
2119
		      | O_CLOEXEC);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2120
    if(hookdir_fd == -1){
2121
      if(errno == ENOENT){
2122
	if(debug){
2123
	  fprintf_plus(stderr, "Network hook directory \"%s\" not"
2124
		       " found\n", hookdir);
2125
	}
2126
      } else {
2127
	perror_plus("open");
2128
      }
2129
      return;
2130
    }
2131
  }
237.7.483 by Teddy Hogeborn
Client: Bug fix: Possible memory leak if failing to open /dev/null
2132
  int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
2133
  if(devnull == -1){
2134
    perror_plus("open(\"/dev/null\", O_RDONLY)");
2135
    return;
2136
  }
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2137
  int numhooks = scandirat(hookdir_fd, ".", &direntries,
2138
			   runnable_hook, alphasort);
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2139
  if(numhooks == -1){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2140
    perror_plus("scandir");
237.7.483 by Teddy Hogeborn
Client: Bug fix: Possible memory leak if failing to open /dev/null
2141
    close(devnull);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2142
    return;
2143
  }
2144
  struct dirent *direntry;
2145
  int ret;
2146
  for(int i = 0; i < numhooks; i++){
2147
    direntry = direntries[i];
2148
    if(debug){
2149
      fprintf_plus(stderr, "Running network hook \"%s\"\n",
2150
		   direntry->d_name);
2151
    }
2152
    pid_t hook_pid = fork();
2153
    if(hook_pid == 0){
2154
      /* Child */
2155
      /* Raise privileges */
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
2156
      errno = raise_privileges_permanently();
2157
      if(errno != 0){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2158
	perror_plus("Failed to raise privileges");
2159
	_exit(EX_NOPERM);
2160
      }
2161
      /* Set group */
2162
      errno = 0;
2163
      ret = setgid(0);
2164
      if(ret == -1){
2165
	perror_plus("setgid");
2166
	_exit(EX_NOPERM);
2167
      }
2168
      /* Reset supplementary groups */
2169
      errno = 0;
2170
      ret = setgroups(0, NULL);
2171
      if(ret == -1){
2172
	perror_plus("setgroups");
2173
	_exit(EX_NOPERM);
2174
      }
2175
      ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
2176
      if(ret == -1){
2177
	perror_plus("setenv");
2178
	_exit(EX_OSERR);
2179
      }
2180
      ret = setenv("DEVICE", interface, 1);
2181
      if(ret == -1){
2182
	perror_plus("setenv");
2183
	_exit(EX_OSERR);
2184
      }
2185
      ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
2186
      if(ret == -1){
2187
	perror_plus("setenv");
2188
	_exit(EX_OSERR);
2189
      }
2190
      ret = setenv("MODE", mode, 1);
2191
      if(ret == -1){
2192
	perror_plus("setenv");
2193
	_exit(EX_OSERR);
2194
      }
2195
      char *delaystring;
2196
      ret = asprintf(&delaystring, "%f", (double)delay);
2197
      if(ret == -1){
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2198
	perror_plus("asprintf");
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2199
	_exit(EX_OSERR);
2200
      }
2201
      ret = setenv("DELAY", delaystring, 1);
2202
      if(ret == -1){
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2203
	free(delaystring);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2204
	perror_plus("setenv");
2205
	_exit(EX_OSERR);
2206
      }
2207
      free(delaystring);
2208
      if(connect_to != NULL){
2209
	ret = setenv("CONNECT", connect_to, 1);
2210
	if(ret == -1){
2211
	  perror_plus("setenv");
2212
	  _exit(EX_OSERR);
2213
	}
2214
      }
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
2215
      int hook_fd = (int)TEMP_FAILURE_RETRY(openat(hookdir_fd,
2216
						   direntry->d_name,
2217
						   O_RDONLY));
237.7.244 by Teddy Hogeborn
Bug fix for mandos-client: Run the network hook, not the directory.
2218
      if(hook_fd == -1){
2219
	perror_plus("openat");
2220
	_exit(EXIT_FAILURE);
2221
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2222
      if(close(hookdir_fd) == -1){
237.7.244 by Teddy Hogeborn
Bug fix for mandos-client: Run the network hook, not the directory.
2223
	perror_plus("close");
2224
	_exit(EXIT_FAILURE);
2225
      }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2226
      ret = dup2(devnull, STDIN_FILENO);
2227
      if(ret == -1){
2228
	perror_plus("dup2(devnull, STDIN_FILENO)");
2229
	_exit(EX_OSERR);
2230
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2231
      ret = close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2232
      if(ret == -1){
2233
	perror_plus("close");
2234
	_exit(EX_OSERR);
2235
      }
2236
      ret = dup2(STDERR_FILENO, STDOUT_FILENO);
2237
      if(ret == -1){
2238
	perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
2239
	_exit(EX_OSERR);
2240
      }
237.7.244 by Teddy Hogeborn
Bug fix for mandos-client: Run the network hook, not the directory.
2241
      if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },
2242
		 environ) == -1){
237.7.240 by Teddy Hogeborn
Make mandos-client use fexecve().
2243
	perror_plus("fexecve");
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2244
	_exit(EXIT_FAILURE);
2245
      }
2246
    } else {
237.7.281 by Teddy Hogeborn
mandos-client: Bug fix: Check fork() return value.
2247
      if(hook_pid == -1){
2248
	perror_plus("fork");
2249
	free(direntry);
2250
	continue;
2251
      }
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2252
      int status;
2253
      if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
2254
	perror_plus("waitpid");
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2255
	free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2256
	continue;
2257
      }
2258
      if(WIFEXITED(status)){
2259
	if(WEXITSTATUS(status) != 0){
2260
	  fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
2261
		       " with status %d\n", direntry->d_name,
2262
		       WEXITSTATUS(status));
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2263
	  free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2264
	  continue;
2265
	}
2266
      } else if(WIFSIGNALED(status)){
2267
	fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
2268
		     " signal %d\n", direntry->d_name,
2269
		     WTERMSIG(status));
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2270
	free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2271
	continue;
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2272
      } else {
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2273
	fprintf_plus(stderr, "Warning: network hook \"%s\""
2274
		     " crashed\n", direntry->d_name);
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2275
	free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2276
	continue;
2277
      }
2278
    }
2279
    if(debug){
2280
      fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
2281
		   direntry->d_name);
2282
    }
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2283
    free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2284
  }
237.7.252 by Teddy Hogeborn
mandos-client: Fix some bugs on error conditions.
2285
  free(direntries);
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2286
  if(close(hookdir_fd) == -1){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2287
    perror_plus("close");
2288
  } else {
2289
    hookdir_fd = -1;
2290
  }
2291
  close(devnull);
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2292
}
2293
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2294
__attribute__((nonnull, warn_unused_result))
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2295
int bring_up_interface(const char *const interface,
2296
		       const float delay){
2297
  int old_errno = errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2298
  int ret;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2299
  struct ifreq network;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2300
  unsigned int if_index = if_nametoindex(interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2301
  if(if_index == 0){
2302
    fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2303
    errno = old_errno;
2304
    return ENXIO;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2305
  }
2306
  
2307
  if(quit_now){
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2308
    errno = old_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2309
    return EINTR;
2310
  }
2311
  
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2312
  if(not interface_is_up(interface)){
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2313
    int ret_errno = 0;
2314
    int ioctl_errno = 0;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2315
    if(not get_flags(interface, &network)){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2316
      ret_errno = errno;
2317
      fprintf_plus(stderr, "Failed to get flags for interface "
2318
		   "\"%s\"\n", interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2319
      errno = old_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2320
      return ret_errno;
2321
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2322
    network.ifr_flags |= IFF_UP; /* set flag */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2323
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2324
    int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
2325
    if(sd == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2326
      ret_errno = errno;
2327
      perror_plus("socket");
2328
      errno = old_errno;
2329
      return ret_errno;
2330
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2331
    
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2332
    if(quit_now){
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2333
      ret = close(sd);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2334
      if(ret == -1){
2335
	perror_plus("close");
2336
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2337
      errno = old_errno;
2338
      return EINTR;
2339
    }
2340
    
2341
    if(debug){
2342
      fprintf_plus(stderr, "Bringing up interface \"%s\"\n",
2343
		   interface);
2344
    }
2345
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2346
    /* Raise privileges */
2347
    ret_errno = raise_privileges();
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2348
    if(ret_errno != 0){
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
2349
      errno = ret_errno;
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2350
      perror_plus("Failed to raise privileges");
2351
    }
2352
    
2353
#ifdef __linux__
2354
    int ret_linux;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2355
    bool restore_loglevel = false;
2356
    if(ret_errno == 0){
2357
      /* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
2358
	 messages about the network interface to mess up the prompt */
2359
      ret_linux = klogctl(8, NULL, 5);
2360
      if(ret_linux == -1){
2361
	perror_plus("klogctl");
2362
      } else {
2363
	restore_loglevel = true;
2364
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2365
    }
2366
#endif	/* __linux__ */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2367
    int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
2368
    ioctl_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2369
#ifdef __linux__
2370
    if(restore_loglevel){
2371
      ret_linux = klogctl(7, NULL, 0);
2372
      if(ret_linux == -1){
2373
	perror_plus("klogctl");
2374
      }
2375
    }
2376
#endif	/* __linux__ */
2377
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2378
    /* If raise_privileges() succeeded above */
2379
    if(ret_errno == 0){
2380
      /* Lower privileges */
2381
      ret_errno = lower_privileges();
2382
      if(ret_errno != 0){
2383
	errno = ret_errno;
2384
	perror_plus("Failed to lower privileges");
2385
      }
2386
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2387
    
2388
    /* Close the socket */
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2389
    ret = close(sd);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2390
    if(ret == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2391
      perror_plus("close");
2392
    }
2393
    
2394
    if(ret_setflags == -1){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2395
      errno = ioctl_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2396
      perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2397
      errno = old_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2398
      return ioctl_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2399
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2400
  } else if(debug){
2401
    fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
2402
		 interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2403
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2404
  
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2405
  /* Sleep checking until interface is running.
2406
     Check every 0.25s, up to total time of delay */
237.7.438 by Teddy Hogeborn
Add spaces around all '=' signs in all C code.
2407
  for(int i = 0; i < delay * 4; i++){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2408
    if(interface_is_running(interface)){
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2409
      break;
2410
    }
2411
    struct timespec sleeptime = { .tv_nsec = 250000000 };
2412
    ret = nanosleep(&sleeptime, NULL);
2413
    if(ret == -1 and errno != EINTR){
2414
      perror_plus("nanosleep");
2415
    }
2416
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2417
  
2418
  errno = old_errno;
2419
  return 0;
2420
}
2421
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2422
__attribute__((nonnull, warn_unused_result))
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2423
int take_down_interface(const char *const interface){
2424
  int old_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2425
  struct ifreq network;
2426
  unsigned int if_index = if_nametoindex(interface);
2427
  if(if_index == 0){
2428
    fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
2429
    errno = old_errno;
2430
    return ENXIO;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2431
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2432
  if(interface_is_up(interface)){
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2433
    int ret_errno = 0;
2434
    int ioctl_errno = 0;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2435
    if(not get_flags(interface, &network) and debug){
2436
      ret_errno = errno;
2437
      fprintf_plus(stderr, "Failed to get flags for interface "
2438
		   "\"%s\"\n", interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2439
      errno = old_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2440
      return ret_errno;
2441
    }
2442
    network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2443
    
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2444
    int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2445
    if(sd == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2446
      ret_errno = errno;
2447
      perror_plus("socket");
2448
      errno = old_errno;
2449
      return ret_errno;
2450
    }
2451
    
2452
    if(debug){
2453
      fprintf_plus(stderr, "Taking down interface \"%s\"\n",
2454
		   interface);
2455
    }
2456
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2457
    /* Raise privileges */
2458
    ret_errno = raise_privileges();
2459
    if(ret_errno != 0){
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
2460
      errno = ret_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2461
      perror_plus("Failed to raise privileges");
2462
    }
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2463
    
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2464
    int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2465
    ioctl_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2466
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2467
    /* If raise_privileges() succeeded above */
2468
    if(ret_errno == 0){
2469
      /* Lower privileges */
2470
      ret_errno = lower_privileges();
2471
      if(ret_errno != 0){
2472
	errno = ret_errno;
2473
	perror_plus("Failed to lower privileges");
2474
      }
2475
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2476
    
2477
    /* Close the socket */
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2478
    int ret = close(sd);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2479
    if(ret == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2480
      perror_plus("close");
2481
    }
2482
    
2483
    if(ret_setflags == -1){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2484
      errno = ioctl_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2485
      perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
2486
      errno = old_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2487
      return ioctl_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2488
    }
2489
  } else if(debug){
2490
    fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
2491
		 interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2492
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2493
  
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2494
  errno = old_errno;
2495
  return 0;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2496
}
2497
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
2498
int main(int argc, char *argv[]){
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
2499
  mandos_context mc = { .server = NULL, .dh_bits = 0,
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
2500
#if GNUTLS_VERSION_NUMBER >= 0x030606
2501
			.priority = "SECURE128:!CTYPE-X.509"
2502
			":+CTYPE-RAWPK:!RSA:!VERS-ALL:+VERS-TLS1.3"
2503
			":%PROFILE_ULTRA",
2504
#elif GNUTLS_VERSION_NUMBER < 0x030600
237.7.325 by Teddy Hogeborn
Bug fix for GnuTLS 3: be compatible with old 2048-bit DSA keys.
2505
			.priority = "SECURE256:!CTYPE-X.509"
2506
			":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
2507
#else
2508
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
2509
#endif
237.7.325 by Teddy Hogeborn
Bug fix for GnuTLS 3: be compatible with old 2048-bit DSA keys.
2510
			.current_server = NULL, .interfaces = NULL,
2511
			.interfaces_size = 0 };
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2512
  AvahiSServiceBrowser *sb = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2513
  error_t ret_errno;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2514
  int ret;
2515
  intmax_t tmpmax;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2516
  char *tmp;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2517
  int exitcode = EXIT_SUCCESS;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2518
  char *interfaces_to_take_down = NULL;
2519
  size_t interfaces_to_take_down_size = 0;
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
2520
  char run_tempdir[] = "/run/tmp/mandosXXXXXX";
2521
  char old_tempdir[] = "/tmp/mandosXXXXXX";
2522
  char *tempdir = NULL;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2523
  AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
2524
  const char *seckey = PATHDIR "/" SECKEY;
2525
  const char *pubkey = PATHDIR "/" PUBKEY;
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
2526
#if GNUTLS_VERSION_NUMBER >= 0x030606
2527
  const char *tls_privkey = PATHDIR "/" TLS_PRIVKEY;
2528
  const char *tls_pubkey = PATHDIR "/" TLS_PUBKEY;
2529
#endif
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2530
  const char *dh_params_file = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2531
  char *interfaces_hooks = NULL;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2532
  
2533
  bool gnutls_initialized = false;
2534
  bool gpgme_initialized = false;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2535
  float delay = 2.5f;
237.7.33 by Teddy Hogeborn
Merge from Björn.
2536
  double retry_interval = 10; /* 10s between trying a server and
2537
				 retrying the same server again */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2538
  
237.2.132 by Teddy Hogeborn
* init.d-mandos (Required-Start, Required-Stop): Bug fix: Added
2539
  struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
2540
  struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2541
  
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
2542
  uid = getuid();
2543
  gid = getgid();
2544
  
2545
  /* Lower any group privileges we might have, just to be safe */
2546
  errno = 0;
2547
  ret = setgid(gid);
2548
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2549
    perror_plus("setgid");
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
2550
  }
2551
  
2552
  /* Lower user privileges (temporarily) */
2553
  errno = 0;
2554
  ret = seteuid(uid);
2555
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2556
    perror_plus("seteuid");
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
2557
  }
2558
  
2559
  if(quit_now){
2560
    goto end;
2561
  }
2562
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2563
  {
2564
    struct argp_option options[] = {
2565
      { .name = "debug", .key = 128,
2566
	.doc = "Debug mode", .group = 3 },
2567
      { .name = "connect", .key = 'c',
2568
	.arg = "ADDRESS:PORT",
2569
	.doc = "Connect directly to a specific Mandos server",
2570
	.group = 1 },
2571
      { .name = "interface", .key = 'i',
2572
	.arg = "NAME",
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2573
	.doc = "Network interface that will be used to search for"
2574
	" Mandos servers",
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2575
	.group = 1 },
2576
      { .name = "seckey", .key = 's',
2577
	.arg = "FILE",
2578
	.doc = "OpenPGP secret key file base name",
2579
	.group = 1 },
2580
      { .name = "pubkey", .key = 'p',
2581
	.arg = "FILE",
2582
	.doc = "OpenPGP public key file base name",
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
2583
	.group = 1 },
2584
      { .name = "tls-privkey", .key = 't',
2585
	.arg = "FILE",
2586
#if GNUTLS_VERSION_NUMBER >= 0x030606
2587
	.doc = "TLS private key file base name",
2588
#else
2589
	.doc = "Dummy; ignored (requires GnuTLS 3.6.6)",
2590
#endif
2591
	.group = 1 },
2592
      { .name = "tls-pubkey", .key = 'T',
2593
	.arg = "FILE",
2594
#if GNUTLS_VERSION_NUMBER >= 0x030606
2595
	.doc = "TLS public key file base name",
2596
#else
2597
	.doc = "Dummy; ignored (requires GnuTLS 3.6.6)",
2598
#endif
2599
	.group = 1 },
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2600
      { .name = "dh-bits", .key = 129,
2601
	.arg = "BITS",
2602
	.doc = "Bit length of the prime number used in the"
2603
	" Diffie-Hellman key exchange",
2604
	.group = 2 },
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2605
      { .name = "dh-params", .key = 134,
2606
	.arg = "FILE",
2607
	.doc = "PEM-encoded PKCS#3 file with pre-generated parameters"
2608
	" for the Diffie-Hellman key exchange",
2609
	.group = 2 },
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2610
      { .name = "priority", .key = 130,
2611
	.arg = "STRING",
2612
	.doc = "GnuTLS priority string for the TLS handshake",
2613
	.group = 1 },
2614
      { .name = "delay", .key = 131,
2615
	.arg = "SECONDS",
2616
	.doc = "Maximum delay to wait for interface startup",
2617
	.group = 2 },
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2618
      { .name = "retry", .key = 132,
2619
	.arg = "SECONDS",
237.17.1 by teddy at recompile
Add wireless network hook
2620
	.doc = "Retry interval used when denied by the Mandos server",
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2621
	.group = 2 },
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
2622
      { .name = "network-hook-dir", .key = 133,
2623
	.arg = "DIR",
2624
	.doc = "Directory where network hooks are located",
2625
	.group = 2 },
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2626
      /*
2627
       * These reproduce what we would get without ARGP_NO_HELP
2628
       */
2629
      { .name = "help", .key = '?',
2630
	.doc = "Give this help list", .group = -1 },
2631
      { .name = "usage", .key = -3,
2632
	.doc = "Give a short usage message", .group = -1 },
2633
      { .name = "version", .key = 'V',
2634
	.doc = "Print program version", .group = -1 },
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2635
      { .name = NULL }
2636
    };
2637
    
2638
    error_t parse_opt(int key, char *arg,
2639
		      struct argp_state *state){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2640
      errno = 0;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2641
      switch(key){
2642
      case 128:			/* --debug */
2643
	debug = true;
2644
	break;
2645
      case 'c':			/* --connect */
2646
	connect_to = arg;
2647
	break;
2648
      case 'i':			/* --interface */
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2649
	ret_errno = argz_add_sep(&mc.interfaces, &mc.interfaces_size,
2650
				 arg, (int)',');
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2651
	if(ret_errno != 0){
2652
	  argp_error(state, "%s", strerror(ret_errno));
2653
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2654
	break;
2655
      case 's':			/* --seckey */
2656
	seckey = arg;
2657
	break;
2658
      case 'p':			/* --pubkey */
2659
	pubkey = arg;
2660
	break;
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
2661
      case 't':			/* --tls-privkey */
2662
#if GNUTLS_VERSION_NUMBER >= 0x030606
2663
	tls_privkey = arg;
2664
#endif
2665
	break;
2666
      case 'T':			/* --tls-pubkey */
2667
#if GNUTLS_VERSION_NUMBER >= 0x030606
2668
	tls_pubkey = arg;
2669
#endif
2670
	break;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2671
      case 129:			/* --dh-bits */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2672
	errno = 0;
2673
	tmpmax = strtoimax(arg, &tmp, 10);
2674
	if(errno != 0 or tmp == arg or *tmp != '\0'
2675
	   or tmpmax != (typeof(mc.dh_bits))tmpmax){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2676
	  argp_error(state, "Bad number of DH bits");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2677
	}
2678
	mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
2679
	break;
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2680
      case 134:			/* --dh-params */
2681
	dh_params_file = arg;
2682
	break;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2683
      case 130:			/* --priority */
2684
	mc.priority = arg;
2685
	break;
2686
      case 131:			/* --delay */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2687
	errno = 0;
2688
	delay = strtof(arg, &tmp);
2689
	if(errno != 0 or tmp == arg or *tmp != '\0'){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2690
	  argp_error(state, "Bad delay");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2691
	}
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2692
      case 132:			/* --retry */
2693
	errno = 0;
2694
	retry_interval = strtod(arg, &tmp);
2695
	if(errno != 0 or tmp == arg or *tmp != '\0'
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2696
	   or (retry_interval * 1000) > INT_MAX
2697
	   or retry_interval < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2698
	  argp_error(state, "Bad retry interval");
2699
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2700
	break;
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
2701
      case 133:			/* --network-hook-dir */
2702
	hookdir = arg;
2703
	break;
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2704
	/*
2705
	 * These reproduce what we would get without ARGP_NO_HELP
2706
	 */
2707
      case '?':			/* --help */
2708
	argp_state_help(state, state->out_stream,
2709
			(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
2710
			& ~(unsigned int)ARGP_HELP_EXIT_OK);
237.7.523 by Teddy Hogeborn
Fix warnings from -Wimplicit-fallthrough
2711
	__builtin_unreachable();
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2712
      case -3:			/* --usage */
2713
	argp_state_help(state, state->out_stream,
2714
			ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
237.7.523 by Teddy Hogeborn
Fix warnings from -Wimplicit-fallthrough
2715
	__builtin_unreachable();
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2716
      case 'V':			/* --version */
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2717
	fprintf_plus(state->out_stream, "%s\n", argp_program_version);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2718
	exit(argp_err_exit_status);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2719
	break;
2720
      default:
2721
	return ARGP_ERR_UNKNOWN;
2722
      }
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2723
      return errno;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2724
    }
2725
    
2726
    struct argp argp = { .options = options, .parser = parse_opt,
2727
			 .args_doc = "",
2728
			 .doc = "Mandos client -- Get and decrypt"
2729
			 " passwords from a Mandos server" };
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2730
    ret_errno = argp_parse(&argp, argc, argv,
2731
			   ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2732
    switch(ret_errno){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2733
    case 0:
2734
      break;
2735
    case ENOMEM:
2736
    default:
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2737
      errno = ret_errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2738
      perror_plus("argp_parse");
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2739
      exitcode = EX_OSERR;
2740
      goto end;
2741
    case EINVAL:
2742
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2743
      goto end;
2744
    }
2745
  }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2746
  
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2747
  {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2748
    /* Re-raise privileges */
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2749
    ret = raise_privileges();
2750
    if(ret != 0){
2751
      errno = ret;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2752
      perror_plus("Failed to raise privileges");
2753
    } else {
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2754
      struct stat st;
2755
      
237.7.779 by Teddy Hogeborn
Work around Debian bug #981302
2756
      /* Work around Debian bug #633582:
2757
	 <https://bugs.debian.org/633582> */
2758
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2759
      if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2760
	int seckey_fd = open(seckey, O_RDONLY);
2761
	if(seckey_fd == -1){
2762
	  perror_plus("open");
2763
	} else {
2764
	  ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
2765
	  if(ret == -1){
2766
	    perror_plus("fstat");
2767
	  } else {
2768
	    if(S_ISREG(st.st_mode)
2769
	       and st.st_uid == 0 and st.st_gid == 0){
2770
	      ret = fchown(seckey_fd, uid, gid);
2771
	      if(ret == -1){
2772
		perror_plus("fchown");
2773
	      }
2774
	    }
2775
	  }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2776
	  close(seckey_fd);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2777
	}
2778
      }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2779
      
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2780
      if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
2781
	int pubkey_fd = open(pubkey, O_RDONLY);
2782
	if(pubkey_fd == -1){
2783
	  perror_plus("open");
2784
	} else {
2785
	  ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
2786
	  if(ret == -1){
2787
	    perror_plus("fstat");
2788
	  } else {
2789
	    if(S_ISREG(st.st_mode)
2790
	       and st.st_uid == 0 and st.st_gid == 0){
2791
	      ret = fchown(pubkey_fd, uid, gid);
2792
	      if(ret == -1){
2793
		perror_plus("fchown");
2794
	      }
2795
	    }
2796
	  }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2797
	  close(pubkey_fd);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2798
	}
2799
      }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2800
      
237.7.324 by Teddy Hogeborn
mandos-client: Bug fix: don't crash if --dh-params was not used.
2801
      if(dh_params_file != NULL
2802
	 and strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
237.7.313 by Teddy Hogeborn
Install client Diffie-Hellman parameters into initramfs.
2803
	int dhparams_fd = open(dh_params_file, O_RDONLY);
2804
	if(dhparams_fd == -1){
2805
	  perror_plus("open");
2806
	} else {
2807
	  ret = (int)TEMP_FAILURE_RETRY(fstat(dhparams_fd, &st));
2808
	  if(ret == -1){
2809
	    perror_plus("fstat");
2810
	  } else {
2811
	    if(S_ISREG(st.st_mode)
2812
	       and st.st_uid == 0 and st.st_gid == 0){
2813
	      ret = fchown(dhparams_fd, uid, gid);
2814
	      if(ret == -1){
2815
		perror_plus("fchown");
2816
	      }
2817
	    }
2818
	  }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2819
	  close(dhparams_fd);
237.7.313 by Teddy Hogeborn
Install client Diffie-Hellman parameters into initramfs.
2820
	}
2821
      }
2822
      
237.7.779 by Teddy Hogeborn
Work around Debian bug #981302
2823
      /* Work around Debian bug #981302
2824
	 <https://bugs.debian.org/981302> */
2825
      if(lstat("/dev/fd", &st) != 0 and errno == ENOENT){
2826
	ret = symlink("/proc/self/fd", "/dev/fd");
2827
	if(ret == -1){
2828
	  perror_plus("Failed to create /dev/fd symlink");
2829
	}
2830
      }
2831
237.16.11 by Teddy Hogeborn
* Makefile (run-client): Add "--network-hook-dir" option.
2832
      /* Lower privileges */
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
2833
      ret = lower_privileges();
2834
      if(ret != 0){
2835
	errno = ret;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2836
	perror_plus("Failed to lower privileges");
2837
      }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2838
    }
2839
  }
2840
  
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2841
  /* Remove invalid interface names (except "none") */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2842
  {
2843
    char *interface = NULL;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2844
    while((interface = argz_next(mc.interfaces, mc.interfaces_size,
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2845
				 interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2846
      if(strcmp(interface, "none") != 0
2847
	 and if_nametoindex(interface) == 0){
2848
	if(interface[0] != '\0'){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2849
	  fprintf_plus(stderr, "Not using nonexisting interface"
2850
		       " \"%s\"\n", interface);
2851
	}
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2852
	argz_delete(&mc.interfaces, &mc.interfaces_size, interface);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2853
	interface = NULL;
2854
      }
2855
    }
2856
  }
2857
  
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2858
  /* Run network hooks */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2859
  {
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2860
    if(mc.interfaces != NULL){
2861
      interfaces_hooks = malloc(mc.interfaces_size);
237.7.147 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Bug fix: Set DEVICE environment
2862
      if(interfaces_hooks == NULL){
2863
	perror_plus("malloc");
2864
	goto end;
2865
      }
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2866
      memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2867
      argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2868
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2869
    run_network_hooks("start", interfaces_hooks != NULL ?
2870
		      interfaces_hooks : "", delay);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2871
  }
2872
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2873
  if(not debug){
2874
    avahi_set_log_function(empty_log);
2875
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2876
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2877
  /* Initialize Avahi early so avahi_simple_poll_quit() can be called
2878
     from the signal handler */
2879
  /* Initialize the pseudo-RNG for Avahi */
2880
  srand((unsigned int) time(NULL));
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2881
  simple_poll = avahi_simple_poll_new();
2882
  if(simple_poll == NULL){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2883
    fprintf_plus(stderr,
2884
		 "Avahi: Failed to create simple poll object.\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2885
    exitcode = EX_UNAVAILABLE;
24.1.135 by Björn Påhlsson
Earlier signal handling
2886
    goto end;
2887
  }
237.2.72 by Teddy Hogeborn
Merge from Björn:
2888
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2889
  sigemptyset(&sigterm_action.sa_mask);
237.2.72 by Teddy Hogeborn
Merge from Björn:
2890
  ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
2891
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2892
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2893
    exitcode = EX_OSERR;
237.2.72 by Teddy Hogeborn
Merge from Björn:
2894
    goto end;
2895
  }
2896
  ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
2897
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2898
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2899
    exitcode = EX_OSERR;
237.2.72 by Teddy Hogeborn
Merge from Björn:
2900
    goto end;
2901
  }
24.1.135 by Björn Påhlsson
Earlier signal handling
2902
  ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
2903
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2904
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2905
    exitcode = EX_OSERR;
24.1.135 by Björn Påhlsson
Earlier signal handling
2906
    goto end;
2907
  }
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2908
  /* Need to check if the handler is SIG_IGN before handling:
2909
     | [[info:libc:Initial Signal Actions]] |
2910
     | [[info:libc:Basic Signal Handling]]  |
2911
  */
2912
  ret = sigaction(SIGINT, NULL, &old_sigterm_action);
2913
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2914
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2915
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2916
  }
2917
  if(old_sigterm_action.sa_handler != SIG_IGN){
2918
    ret = sigaction(SIGINT, &sigterm_action, NULL);
2919
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2920
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2921
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2922
      goto end;
2923
    }
2924
  }
2925
  ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
2926
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2927
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2928
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2929
  }
2930
  if(old_sigterm_action.sa_handler != SIG_IGN){
2931
    ret = sigaction(SIGHUP, &sigterm_action, NULL);
2932
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2933
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2934
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2935
      goto end;
2936
    }
2937
  }
2938
  ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
2939
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2940
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2941
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2942
  }
2943
  if(old_sigterm_action.sa_handler != SIG_IGN){
2944
    ret = sigaction(SIGTERM, &sigterm_action, NULL);
2945
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2946
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2947
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2948
      goto end;
2949
    }
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2950
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2951
  
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2952
  /* If no interfaces were specified, make a list */
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2953
  if(mc.interfaces == NULL){
237.7.247 by Teddy Hogeborn
Fix free() of possibly uninitialized pointer in mandos-client.
2954
    struct dirent **direntries = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2955
    /* Look for any good interfaces */
2956
    ret = scandir(sys_class_net, &direntries, good_interface,
2957
		  alphasort);
2958
    if(ret >= 1){
2959
      /* Add all found interfaces to interfaces list */
2960
      for(int i = 0; i < ret; ++i){
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2961
	ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2962
			     direntries[i]->d_name);
2963
	if(ret_errno != 0){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2964
	  errno = ret_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2965
	  perror_plus("argz_add");
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2966
	  free(direntries[i]);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2967
	  continue;
2968
	}
2969
	if(debug){
2970
	  fprintf_plus(stderr, "Will use interface \"%s\"\n",
2971
		       direntries[i]->d_name);
2972
	}
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2973
	free(direntries[i]);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2974
      }
2975
      free(direntries);
2976
    } else {
237.7.252 by Teddy Hogeborn
mandos-client: Fix some bugs on error conditions.
2977
      if(ret == 0){
2978
	free(direntries);
2979
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2980
      fprintf_plus(stderr, "Could not find a network interface\n");
2981
      exitcode = EXIT_FAILURE;
2982
      goto end;
2983
    }
2984
  }
2985
  
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
2986
  /* Bring up interfaces which are down, and remove any "none"s */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2987
  {
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2988
    char *interface = NULL;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2989
    while((interface = argz_next(mc.interfaces, mc.interfaces_size,
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2990
				 interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2991
      /* If interface name is "none", stop bringing up interfaces.
2992
	 Also remove all instances of "none" from the list */
2993
      if(strcmp(interface, "none") == 0){
2994
	argz_delete(&mc.interfaces, &mc.interfaces_size,
2995
		    interface);
2996
	interface = NULL;
2997
	while((interface = argz_next(mc.interfaces,
2998
				     mc.interfaces_size, interface))){
2999
	  if(strcmp(interface, "none") == 0){
3000
	    argz_delete(&mc.interfaces, &mc.interfaces_size,
3001
			interface);
3002
	    interface = NULL;
3003
	  }
3004
	}
3005
	break;
3006
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
3007
      bool interface_was_up = interface_is_up(interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3008
      errno = bring_up_interface(interface, delay);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
3009
      if(not interface_was_up){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3010
	if(errno != 0){
237.7.315 by Teddy Hogeborn
plugins.d/mandos-client.c (main): See why it failed to bring up interface.
3011
	  fprintf_plus(stderr, "Failed to bring up interface \"%s\":"
3012
		       " %s\n", interface, strerror(errno));
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
3013
	} else {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3014
	  errno = argz_add(&interfaces_to_take_down,
3015
			   &interfaces_to_take_down_size,
3016
			   interface);
3017
	  if(errno != 0){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
3018
	    perror_plus("argz_add");
3019
	  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
3020
	}
3021
      }
3022
    }
3023
    if(debug and (interfaces_to_take_down == NULL)){
3024
      fprintf_plus(stderr, "No interfaces were brought up\n");
237.2.128 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Bug fix: Check result of setgid().
3025
    }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3026
  }
3027
  
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
3028
  /* If we only got one interface, explicitly use only that one */
3029
  if(argz_count(mc.interfaces, mc.interfaces_size) == 1){
3030
    if(debug){
3031
      fprintf_plus(stderr, "Using only interface \"%s\"\n",
3032
		   mc.interfaces);
3033
    }
3034
    if_index = (AvahiIfIndex)if_nametoindex(mc.interfaces);
3035
  }
3036
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3037
  if(quit_now){
3038
    goto end;
3039
  }
3040
  
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
3041
#if GNUTLS_VERSION_NUMBER >= 0x030606
3042
  ret = init_gnutls_global(tls_pubkey, tls_privkey, dh_params_file, &mc);
3043
#elif GNUTLS_VERSION_NUMBER < 0x030600
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
3044
  ret = init_gnutls_global(pubkey, seckey, dh_params_file, &mc);
237.7.510 by Teddy Hogeborn
Add support for using raw public keys in TLS (RFC 7250)
3045
#else
3046
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
3047
#endif
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3048
  if(ret == -1){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3049
    fprintf_plus(stderr, "init_gnutls_global failed\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3050
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3051
    goto end;
3052
  } else {
3053
    gnutls_initialized = true;
3054
  }
3055
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3056
  if(quit_now){
3057
    goto end;
3058
  }
3059
  
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
3060
  /* Try /run/tmp before /tmp */
3061
  tempdir = mkdtemp(run_tempdir);
3062
  if(tempdir == NULL and errno == ENOENT){
3063
      if(debug){
3064
	fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
3065
		     run_tempdir, old_tempdir);
3066
      }
3067
      tempdir = mkdtemp(old_tempdir);
3068
  }
3069
  if(tempdir == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3070
    perror_plus("mkdtemp");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3071
    goto end;
3072
  }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3073
  
3074
  if(quit_now){
3075
    goto end;
3076
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3077
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
3078
  if(not init_gpgme(pubkey, seckey, tempdir, &mc)){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3079
    fprintf_plus(stderr, "init_gpgme failed\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3080
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3081
    goto end;
3082
  } else {
3083
    gpgme_initialized = true;
3084
  }
3085
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3086
  if(quit_now){
3087
    goto end;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3088
  }
3089
  
3090
  if(connect_to != NULL){
3091
    /* Connect directly, do not use Zeroconf */
3092
    /* (Mainly meant for debugging) */
3093
    char *address = strrchr(connect_to, ':');
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
3094
    
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3095
    if(address == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3096
      fprintf_plus(stderr, "No colon in address\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3097
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3098
      goto end;
3099
    }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3100
    
3101
    if(quit_now){
3102
      goto end;
3103
    }
3104
    
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
3105
    in_port_t port;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
3106
    errno = 0;
3107
    tmpmax = strtoimax(address+1, &tmp, 10);
3108
    if(errno != 0 or tmp == address+1 or *tmp != '\0'
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
3109
       or tmpmax != (in_port_t)tmpmax){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3110
      fprintf_plus(stderr, "Bad port number\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3111
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3112
      goto end;
3113
    }
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
3114
    
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3115
    if(quit_now){
3116
      goto end;
3117
    }
3118
    
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
3119
    port = (in_port_t)tmpmax;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3120
    *address = '\0';
237.2.67 by Teddy Hogeborn
Four new interrelated features:
3121
    /* Colon in address indicates IPv6 */
3122
    int af;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
3123
    if(strchr(connect_to, ':') != NULL){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
3124
      af = AF_INET6;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
3125
      /* Accept [] around IPv6 address - see RFC 5952 */
3126
      if(connect_to[0] == '[' and address[-1] == ']')
3127
	{
3128
	  connect_to++;
3129
	  address[-1] = '\0';
3130
	}
237.2.67 by Teddy Hogeborn
Four new interrelated features:
3131
    } else {
3132
      af = AF_INET;
3133
    }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
3134
    address = connect_to;
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3135
    
3136
    if(quit_now){
3137
      goto end;
3138
    }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
3139
    
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
3140
    while(not quit_now){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
3141
      ret = start_mandos_communication(address, port, if_index, af,
3142
				       &mc);
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
3143
      if(quit_now or ret == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3144
	break;
3145
      }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
3146
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
3147
	fprintf_plus(stderr, "Retrying in %d seconds\n",
3148
		     (int)retry_interval);
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
3149
      }
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
3150
      sleep((unsigned int)retry_interval);
237.7.40 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not even try to work around
3151
    }
3152
    
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
3153
    if(not quit_now){
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3154
      exitcode = EXIT_SUCCESS;
3155
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
3156
    
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3157
    goto end;
3158
  }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3159
  
3160
  if(quit_now){
3161
    goto end;
3162
  }
3163
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3164
  {
3165
    AvahiServerConfig config;
3166
    /* Do not publish any local Zeroconf records */
3167
    avahi_server_config_init(&config);
3168
    config.publish_hinfo = 0;
3169
    config.publish_addresses = 0;
3170
    config.publish_workstation = 0;
3171
    config.publish_domain = 0;
3172
    
3173
    /* Allocate a new server */
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
3174
    mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
3175
				 &config, NULL, NULL, &ret);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3176
    
3177
    /* Free the Avahi configuration data */
3178
    avahi_server_config_free(&config);
3179
  }
3180
  
3181
  /* Check if creating the Avahi server object succeeded */
3182
  if(mc.server == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3183
    fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
3184
		 avahi_strerror(ret));
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3185
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3186
    goto end;
3187
  }
3188
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3189
  if(quit_now){
3190
    goto end;
3191
  }
3192
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3193
  /* Create the Avahi service browser */
3194
  sb = avahi_s_service_browser_new(mc.server, if_index,
237.2.76 by Teddy Hogeborn
* plugins.d/mandos-client.c (browse_callback, main): Do not require
3195
				   AVAHI_PROTO_UNSPEC, "_mandos._tcp",
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
3196
				   NULL, 0, browse_callback,
3197
				   (void *)&mc);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3198
  if(sb == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3199
    fprintf_plus(stderr, "Failed to create service browser: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
3200
		 avahi_strerror(avahi_server_errno(mc.server)));
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
3201
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3202
    goto end;
3203
  }
237.2.70 by Teddy Hogeborn
Merge from Björn:
3204
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
3205
  if(quit_now){
3206
    goto end;
3207
  }
3208
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3209
  /* Run the main loop */
3210
  
3211
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3212
    fprintf_plus(stderr, "Starting Avahi loop search\n");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3213
  }
237.7.235 by Teddy Hogeborn
White space fix only.
3214
  
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
3215
  ret = avahi_loop_with_timeout(simple_poll,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
3216
				(int)(retry_interval * 1000), &mc);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3217
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
3218
    fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
3219
		 (ret == 0) ? "successfully" : "with error");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3220
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3221
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
3222
 end:
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3223
  
3224
  if(debug){
237.7.418 by Teddy Hogeborn
Show what signal, if any, made mandos-client exit.
3225
    if(signal_received){
3226
      fprintf_plus(stderr, "%s exiting due to signal %d: %s\n",
3227
		   argv[0], signal_received,
3228
		   strsignal(signal_received));
3229
    } else {
3230
      fprintf_plus(stderr, "%s exiting\n", argv[0]);
3231
    }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3232
  }
3233
  
3234
  /* Cleanup things */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
3235
  free(mc.interfaces);
3236
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3237
  if(sb != NULL)
3238
    avahi_s_service_browser_free(sb);
3239
  
3240
  if(mc.server != NULL)
3241
    avahi_server_free(mc.server);
3242
  
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
3243
  if(simple_poll != NULL)
3244
    avahi_simple_poll_free(simple_poll);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3245
  
3246
  if(gnutls_initialized){
3247
    gnutls_certificate_free_credentials(mc.cred);
3248
    gnutls_dh_params_deinit(mc.dh_params);
3249
  }
3250
  
3251
  if(gpgme_initialized){
3252
    gpgme_release(mc.ctx);
3253
  }
237.16.12 by Teddy Hogeborn
* plugins.d/mandos-client.c (runnable_hook): Add debug output.
3254
  
237.7.33 by Teddy Hogeborn
Merge from Björn.
3255
  /* Cleans up the circular linked list of Mandos servers the client
3256
     has seen */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3257
  if(mc.current_server != NULL){
3258
    mc.current_server->prev->next = NULL;
3259
    while(mc.current_server != NULL){
3260
      server *next = mc.current_server->next;
237.7.262 by Teddy Hogeborn
mandos-client: Fix mem free bug.
3261
#ifdef __GNUC__
3262
#pragma GCC diagnostic push
3263
#pragma GCC diagnostic ignored "-Wcast-qual"
3264
#endif
3265
      free((char *)(mc.current_server->ip));
3266
#ifdef __GNUC__
3267
#pragma GCC diagnostic pop
3268
#endif
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3269
      free(mc.current_server);
3270
      mc.current_server = next;
3271
    }
3272
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3273
  
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3274
  /* Re-raise privileges */
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
3275
  {
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
3276
    ret = raise_privileges();
3277
    if(ret != 0){
3278
      errno = ret;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3279
      perror_plus("Failed to raise privileges");
3280
    } else {
3281
      
3282
      /* Run network hooks */
3283
      run_network_hooks("stop", interfaces_hooks != NULL ?
3284
			interfaces_hooks : "", delay);
3285
      
3286
      /* Take down the network interfaces which were brought up */
3287
      {
3288
	char *interface = NULL;
237.7.438 by Teddy Hogeborn
Add spaces around all '=' signs in all C code.
3289
	while((interface = argz_next(interfaces_to_take_down,
3290
				     interfaces_to_take_down_size,
3291
				     interface))){
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
3292
	  ret = take_down_interface(interface);
3293
	  if(ret != 0){
3294
	    errno = ret;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3295
	    perror_plus("Failed to take down interface");
3296
	  }
3297
	}
3298
	if(debug and (interfaces_to_take_down == NULL)){
3299
	  fprintf_plus(stderr, "No interfaces needed to be taken"
3300
		       " down\n");
3301
	}
3302
      }
3303
    }
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
3304
    
237.7.367 by Teddy Hogeborn
errno is of type int, not error_t
3305
    ret = lower_privileges_permanently();
3306
    if(ret != 0){
3307
      errno = ret;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3308
      perror_plus("Failed to lower privileges permanently");
3309
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
3310
  }
3311
  
3312
  free(interfaces_to_take_down);
3313
  free(interfaces_hooks);
237.2.113 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Take down network interface on
3314
  
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
3315
  void clean_dir_at(int base, const char * const dirname,
3316
		    uintmax_t level){
3317
    struct dirent **direntries = NULL;
3318
    int dret;
3319
    int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3320
						O_RDONLY
3321
						| O_NOFOLLOW
3322
						| O_DIRECTORY
3323
						| O_PATH));
3324
    if(dir_fd == -1){
3325
      perror_plus("open");
237.7.484 by Teddy Hogeborn
Client: Bug fix: Don't try to clean directory which fails to open
3326
      return;
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
3327
    }
3328
    int numentries = scandirat(dir_fd, ".", &direntries,
3329
			       notdotentries, alphasort);
3330
    if(numentries >= 0){
3331
      for(int i = 0; i < numentries; i++){
3332
	if(debug){
3333
	  fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3334
		       dirname, direntries[i]->d_name);
3335
	}
3336
	dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3337
	if(dret == -1){
3338
	  if(errno == EISDIR){
3339
	      dret = unlinkat(dir_fd, direntries[i]->d_name,
3340
			      AT_REMOVEDIR);
3341
	  }	    
3342
	  if((dret == -1) and (errno == ENOTEMPTY)
3343
	     and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3344
		  == 0) and (level == 0)){
3345
	    /* Recurse only in this special case */
3346
	    clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3347
	    dret = 0;
3348
	  }
237.7.482 by Teddy Hogeborn
Client: Don't print failures to remove nonexisting files.
3349
	  if((dret == -1) and (errno != ENOENT)){
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
3350
	    fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3351
			 direntries[i]->d_name, strerror(errno));
3352
	  }
3353
	}
3354
	free(direntries[i]);
3355
      }
3356
      
3357
      /* need to clean even if 0 because man page doesn't specify */
3358
      free(direntries);
3359
      dret = unlinkat(base, dirname, AT_REMOVEDIR);
3360
      if(dret == -1 and errno != ENOENT){
3361
	perror_plus("rmdir");
3362
      }
3363
    } else {
3364
      perror_plus("scandirat");
3365
    }
3366
    close(dir_fd);
3367
  }
3368
  
24.1.172 by Björn Påhlsson
using scandir instead of readdir
3369
  /* Removes the GPGME temp directory and all files inside */
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
3370
  if(tempdir != NULL){
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
3371
    clean_dir_at(-1, tempdir, 0);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3372
  }
3373
  
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3374
  if(quit_now){
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
3375
    sigemptyset(&old_sigterm_action.sa_mask);
3376
    old_sigterm_action.sa_handler = SIG_DFL;
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
3377
    ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
3378
					    &old_sigterm_action,
3379
					    NULL));
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3380
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3381
      perror_plus("sigaction");
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3382
    }
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
3383
    do {
3384
      ret = raise(signal_received);
3385
    } while(ret != 0 and errno == EINTR);
3386
    if(ret != 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3387
      perror_plus("raise");
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
3388
      abort();
3389
    }
3390
    TEMP_FAILURE_RETRY(pause());
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3391
  }
3392
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3393
  return exitcode;
13 by Björn Påhlsson
Added following support:
3394
}