3
3
* Splashy - Read a password from splashy and output it
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
8
* This program is free software: you can redistribute it and/or
9
* modify it under the terms of the GNU General Public License as
10
* published by the Free Software Foundation, either version 3 of the
11
* License, or (at your option) any later version.
13
* This program is distributed in the hope that it will be useful, but
5
* Copyright © 2008-2018, 2021 Teddy Hogeborn
6
* Copyright © 2008-2018, 2021 Björn Påhlsson
8
* This file is part of Mandos.
10
* Mandos is free software: you can redistribute it and/or modify it
11
* under the terms of the GNU General Public License as published by
12
* the Free Software Foundation, either version 3 of the License, or
13
* (at your option) any later version.
15
* Mandos is distributed in the hope that it will be useful, but
14
16
* WITHOUT ANY WARRANTY; without even the implied warranty of
15
17
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16
18
* General Public License for more details.
18
20
* You should have received a copy of the GNU General Public License
19
* along with this program. If not, see
20
* <http://www.gnu.org/licenses/>.
21
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
22
* Contact the authors at <mandos@fukt.bsnet.se>.
23
* Contact the authors at <mandos@recompile.se>.
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
26
#include <signal.h> /* sig_atomic_t, struct sigaction,
27
sigemptyset(), sigaddset(), SIGINT,
28
SIGHUP, SIGTERM, sigaction,
29
SIG_IGN, kill(), SIGKILL */
30
#include <stddef.h> /* NULL */
31
#include <stdlib.h> /* getenv() */
32
#include <stdio.h> /* asprintf(), perror() */
33
#include <stdlib.h> /* EXIT_FAILURE, free(),
35
#include <sys/types.h> /* pid_t, DIR, struct dirent,
37
#include <dirent.h> /* opendir(), readdir(), closedir() */
38
#include <inttypes.h> /* intmax_t, strtoimax() */
39
#include <sys/stat.h> /* struct stat, lstat(), S_ISLNK */
40
#include <iso646.h> /* not, or, and */
41
#include <unistd.h> /* readlink(), fork(), execl(),
42
sleep(), dup2() STDERR_FILENO,
43
STDOUT_FILENO, _exit(),
45
#include <string.h> /* memcmp() */
46
#include <errno.h> /* errno, EACCES, ENOTDIR, ELOOP,
26
#define _GNU_SOURCE /* vasprintf(),
27
program_invocation_short_name,
28
asprintf(), TEMP_FAILURE_RETRY() */
29
#include <sys/types.h> /* sig_atomic_t, pid_t, setuid(),
30
geteuid(), setsid() */
31
#include <stdarg.h> /* va_list, va_start(), vfprintf() */
32
#include <stdio.h> /* vasprintf(), fprintf(), stderr,
33
vfprintf(), asprintf() */
34
#include <errno.h> /* program_invocation_short_name,
35
errno, EACCES, ENOTDIR, ELOOP,
47
36
ENOENT, ENAMETOOLONG, EMFILE,
48
37
ENFILE, ENOMEM, ENOEXEC, EINVAL,
49
38
E2BIG, EFAULT, EIO, ETXTBSY,
50
39
EISDIR, ELIBBAD, EPERM, EINTR,
41
#include <string.h> /* strerror(), memcmp() */
42
#include <error.h> /* error() */
43
#include <stdlib.h> /* free(), EXIT_FAILURE, getenv(),
44
EXIT_SUCCESS, abort() */
45
#include <stddef.h> /* NULL */
46
#include <dirent.h> /* DIR, opendir(), struct dirent,
47
readdir(), closedir() */
48
#include <sysexits.h> /* EX_OSERR, EX_OSFILE,
50
#include <inttypes.h> /* intmax_t, strtoimax() */
51
#include <iso646.h> /* or, not, and */
52
#include <unistd.h> /* ssize_t, readlink(), fork(),
54
TEMP_FAILURE_RETRY(), sleep(),
55
setuid(), geteuid(), setsid(),
56
chdir(), dup2(), STDERR_FILENO,
57
STDOUT_FILENO, pause() */
58
#include <sys/stat.h> /* struct stat, lstat(), S_ISLNK() */
59
#include <signal.h> /* struct sigaction, sigemptyset(),
60
sigaddset(), SIGINT, SIGHUP,
61
SIGTERM, SIG_IGN, kill(), SIGKILL,
52
63
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
54
#include <sysexits.h> /* EX_OSERR, EX_OSFILE,
57
66
sig_atomic_t interrupted_by_signal = 0;
58
67
int signal_received;
69
/* Function to use when printing errors */
70
__attribute__((format (gnu_printf, 3, 4)))
71
void error_plus(int status, int errnum, const char *formatstring,
77
va_start(ap, formatstring);
78
ret = vasprintf(&text, formatstring, ap);
80
fprintf(stderr, "Mandos plugin %s: ",
81
program_invocation_short_name);
82
vfprintf(stderr, formatstring, ap);
83
fprintf(stderr, ": ");
84
fprintf(stderr, "%s\n", strerror(errnum));
85
error(status, errno, "vasprintf while printing error");
88
fprintf(stderr, "Mandos plugin ");
89
error(status, errnum, "%s", text);
60
94
static void termination_handler(int signum){
61
95
if(interrupted_by_signal){
213
247
sigemptyset(&new_action.sa_mask);
214
248
ret = sigaddset(&new_action.sa_mask, SIGINT);
250
error_plus(0, errno, "sigaddset");
217
251
exitstatus = EX_OSERR;
220
254
ret = sigaddset(&new_action.sa_mask, SIGHUP);
256
error_plus(0, errno, "sigaddset");
223
257
exitstatus = EX_OSERR;
226
260
ret = sigaddset(&new_action.sa_mask, SIGTERM);
262
error_plus(0, errno, "sigaddset");
229
263
exitstatus = EX_OSERR;
232
266
ret = sigaction(SIGINT, NULL, &old_action);
268
error_plus(0, errno, "sigaction");
235
269
exitstatus = EX_OSERR;
238
272
if(old_action.sa_handler != SIG_IGN){
239
273
ret = sigaction(SIGINT, &new_action, NULL);
275
error_plus(0, errno, "sigaction");
242
276
exitstatus = EX_OSERR;
246
280
ret = sigaction(SIGHUP, NULL, &old_action);
282
error_plus(0, errno, "sigaction");
249
283
exitstatus = EX_OSERR;
252
286
if(old_action.sa_handler != SIG_IGN){
253
287
ret = sigaction(SIGHUP, &new_action, NULL);
289
error_plus(0, errno, "sigaction");
256
290
exitstatus = EX_OSERR;
260
294
ret = sigaction(SIGTERM, NULL, &old_action);
296
error_plus(0, errno, "sigaction");
263
297
exitstatus = EX_OSERR;
266
300
if(old_action.sa_handler != SIG_IGN){
267
301
ret = sigaction(SIGTERM, &new_action, NULL);
303
error_plus(0, errno, "sigaction");
270
304
exitstatus = EX_OSERR;
added
removed
plugins.d/splashy.c
