/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
237.2.207 by Teddy Hogeborn
Update copyright year to "2010" wherever appropriate.
1
/*  -*- coding: utf-8 -*- */
2
/*
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
3
 * Plymouth - Read a password from Plymouth and output it
237.2.207 by Teddy Hogeborn
Update copyright year to "2010" wherever appropriate.
4
 * 
237.7.14 by Teddy Hogeborn
Update copyright year to "2011" wherever appropriate.
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 * Copyright © 2010-2011 Teddy Hogeborn
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 * Copyright © 2010-2011 Björn Påhlsson
237.2.207 by Teddy Hogeborn
Update copyright year to "2010" wherever appropriate.
7
 * 
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.
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 * 
13
 * This program is distributed in the hope that it will be useful, but
14
 * WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * General Public License for more details.
17
 * 
18
 * 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
 * 
237.11.2 by Teddy Hogeborn
Change "fukt.bsnet.se" to "recompile.se" throughout.
22
 * Contact the authors at <mandos@recompile.se>.
237.2.207 by Teddy Hogeborn
Update copyright year to "2010" wherever appropriate.
23
 */
24
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
25
#define _GNU_SOURCE		/* asprintf(), TEMP_FAILURE_RETRY() */
26
#include <signal.h>		/* sig_atomic_t, struct sigaction,
27
				   sigemptyset(), sigaddset(), SIGINT,
28
				   SIGHUP, SIGTERM, sigaction(),
29
				   kill(), SIG_IGN */
30
#include <stdbool.h>		/* bool, false, true */
31
#include <fcntl.h>		/* open(), O_RDONLY */
32
#include <iso646.h>		/* and, or, not*/
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
33
#include <sys/types.h>		/* size_t, ssize_t, pid_t, struct
34
				   dirent, waitpid() */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
35
#include <sys/wait.h>		/* waitpid() */
36
#include <stddef.h>		/* NULL */
37
#include <string.h>		/* strchr(), memcmp() */
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
38
#include <stdio.h>		/* asprintf(), perror(), fopen(),
237.7.33 by Teddy Hogeborn
Merge from Björn.
39
				   fscanf(), vasprintf(), fprintf(),
40
				   vfprintf() */
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
41
#include <unistd.h>		/* close(), readlink(), read(),
42
				   fork(), setsid(), chdir(), dup2(),
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
43
				   STDERR_FILENO, execv(), access() */
44
#include <stdlib.h>		/* free(), EXIT_FAILURE, realloc(),
45
				   EXIT_SUCCESS, malloc(), _exit(),
46
				   getenv() */
47
#include <dirent.h>		/* scandir(), alphasort() */
48
#include <inttypes.h>		/* intmax_t, strtoumax(), SCNuMAX */
49
#include <sys/stat.h>		/* struct stat, lstat() */
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
50
#include <sysexits.h>		/* EX_OSERR, EX_UNAVAILABLE */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
51
#include <error.h>		/* error() */
52
#include <errno.h>		/* TEMP_FAILURE_RETRY */
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
53
#include <argz.h>		/* argz_count(), argz_extract() */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
54
#include <stdarg.h>		/* va_list, va_start(), ... */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
55
56
sig_atomic_t interrupted_by_signal = 0;
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
57
58
/* Used by Ubuntu 11.04 (Natty Narwahl) */
59
const char plymouth_old_pid[] = "/dev/.initramfs/plymouth.pid";
60
/* Used by Ubuntu 11.10 (Oneiric Ocelot) */
61
const char plymouth_pid[] = "/run/initramfs/plymouth.pid";
62
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
63
const char plymouth_path[] = "/bin/plymouth";
64
const char plymouthd_path[] = "/sbin/plymouthd";
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
65
const char *plymouthd_default_argv[] = {"/sbin/plymouthd",
66
					"--mode=boot",
24.1.157 by Björn Påhlsson
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					"--attach-to-session",
68
					NULL };
69
70
static void termination_handler(__attribute__((unused))int signum){
71
  if(interrupted_by_signal){
72
    return;
73
  }
74
  interrupted_by_signal = 1;
75
}
76
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
77
/* Function to use when printing errors */
237.7.81 by teddy at bsnet
* plugins.d/splashy.c (error_plus): Check format string.
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__attribute__((format (gnu_printf, 3, 4)))
237.7.33 by Teddy Hogeborn
Merge from Björn.
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void error_plus(int status, int errnum, const char *formatstring,
80
		...){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
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  va_list ap;
82
  char *text;
83
  int ret;
84
  
85
  va_start(ap, formatstring);
86
  ret = vasprintf(&text, formatstring, ap);
87
  if (ret == -1){
237.7.33 by Teddy Hogeborn
Merge from Björn.
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    fprintf(stderr, "Mandos plugin %s: ",
89
	    program_invocation_short_name);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
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    vfprintf(stderr, formatstring, ap);
91
    fprintf(stderr, ": ");
92
    fprintf(stderr, "%s\n", strerror(errnum));
93
    error(status, errno, "vasprintf while printing error");
94
    return;
95
  }
96
  fprintf(stderr, "Mandos plugin ");
97
  error(status, errnum, "%s", text);
98
  free(text);
99
}
100
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
101
/* Create prompt string */
102
char *makeprompt(void){
103
  int ret = 0;
104
  char *prompt;
105
  const char *const cryptsource = getenv("cryptsource");
106
  const char *const crypttarget = getenv("crypttarget");
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
107
  const char prompt_start[] = "Unlocking the disk";
108
  const char prompt_end[] = "Enter passphrase";
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
109
  
110
  if(cryptsource == NULL){
111
    if(crypttarget == NULL){
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
112
      ret = asprintf(&prompt, "%s\n%s", prompt_start, prompt_end);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
113
    } else {
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
114
      ret = asprintf(&prompt, "%s (%s)\n%s", prompt_start,
115
		     crypttarget, prompt_end);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
116
    }
117
  } else {
118
    if(crypttarget == NULL){
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
119
      ret = asprintf(&prompt, "%s %s\n%s", prompt_start, cryptsource,
120
		     prompt_end);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
121
    } else {
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
122
      ret = asprintf(&prompt, "%s %s (%s)\n%s", prompt_start,
123
		     cryptsource, crypttarget, prompt_end);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
124
    }
125
  }
126
  if(ret == -1){
127
    return NULL;
128
  }
129
  return prompt;
130
}
131
132
void kill_and_wait(pid_t pid){
133
  TEMP_FAILURE_RETRY(kill(pid, SIGTERM));
134
  TEMP_FAILURE_RETRY(waitpid(pid, NULL, 0));
135
}
136
137
bool become_a_daemon(void){
138
  int ret = setuid(geteuid());
139
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
140
    error_plus(0, errno, "setuid");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
141
  }
142
    
143
  setsid();
144
  ret = chdir("/");
145
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
146
    error_plus(0, errno, "chdir");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
147
    return false;
148
  }
149
  ret = dup2(STDERR_FILENO, STDOUT_FILENO); /* replace our stdout */
150
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
151
    error_plus(0, errno, "dup2");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
152
    return false;
153
  }
154
  return true;
155
}
156
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
157
__attribute__((nonnull (2, 3)))
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
158
bool exec_and_wait(pid_t *pid_return, const char *path,
159
		   const char **argv, bool interruptable,
160
		   bool daemonize){
161
  int status;
162
  int ret;
163
  pid_t pid;
164
  pid = fork();
165
  if(pid == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
166
    error_plus(0, errno, "fork");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
167
    return false;
168
  }
169
  if(pid == 0){
170
    /* Child */
171
    if(daemonize){
172
      if(not become_a_daemon()){
173
	_exit(EX_OSERR);
174
      }
175
    }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
176
    
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
177
    char **new_argv = NULL;
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
178
    char **tmp;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
179
    int i = 0;
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
180
    for (; argv[i]!=NULL; i++){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
181
      tmp = realloc(new_argv, sizeof(const char *) * ((size_t)i + 1));
182
      if (tmp == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
183
	error_plus(0, errno, "realloc");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
184
	free(new_argv);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
185
	_exit(EX_OSERR);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
186
      }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
187
      new_argv = tmp;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
188
      new_argv[i] = strdup(argv[i]);
189
    }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
190
    new_argv[i] = NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
191
    
192
    execv(path, (char *const *)new_argv);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
193
    error_plus(0, errno, "execv");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
194
    _exit(EXIT_FAILURE);
195
  }
196
  if(pid_return != NULL){
197
    *pid_return = pid;
198
  }
199
  do {
200
    ret = waitpid(pid, &status, 0);
201
  } while(ret == -1 and errno == EINTR
202
	  and ((not interrupted_by_signal)
203
	       or (not interruptable)));
204
  if(interrupted_by_signal and interruptable){
205
    return false;
206
  }
207
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
208
    error_plus(0, errno, "waitpid");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
209
    return false;
210
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
211
  if(WIFEXITED(status) and (WEXITSTATUS(status) == 0)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
212
    return true;
213
  }
214
  return false;
215
}
216
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
217
__attribute__((nonnull))
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
218
int is_plymouth(const struct dirent *proc_entry){
219
  int ret;
220
  {
221
    uintmax_t maxvalue;
222
    char *tmp;
223
    errno = 0;
224
    maxvalue = strtoumax(proc_entry->d_name, &tmp, 10);
225
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
226
    if(errno != 0 or *tmp != '\0'
227
       or maxvalue != (uintmax_t)((pid_t)maxvalue)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
228
      return 0;
229
    }
230
  }
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
231
  char exe_target[sizeof(plymouthd_path)];
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
232
  char *exe_link;
233
  ret = asprintf(&exe_link, "/proc/%s/exe", proc_entry->d_name);
234
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
235
    error_plus(0, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
236
    return 0;
237
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
238
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
239
  struct stat exe_stat;
240
  ret = lstat(exe_link, &exe_stat);
241
  if(ret == -1){
242
    free(exe_link);
243
    if(errno != ENOENT){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
244
      error_plus(0, errno, "lstat");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
245
    }
246
    return 0;
247
  }
248
  
249
  if(not S_ISLNK(exe_stat.st_mode)
250
     or exe_stat.st_uid != 0
251
     or exe_stat.st_gid != 0){
252
    free(exe_link);
253
    return 0;
254
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
255
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
256
  ssize_t sret = readlink(exe_link, exe_target, sizeof(exe_target));
257
  free(exe_link);
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
258
  if((sret != (ssize_t)sizeof(plymouthd_path)-1) or
259
      (memcmp(plymouthd_path, exe_target,
260
	      sizeof(plymouthd_path)-1) != 0)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
261
    return 0;
262
  }
263
  return 1;
264
}
265
266
pid_t get_pid(void){
267
  int ret;
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
268
  uintmax_t maxvalue = 0;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
269
  FILE *pidfile = fopen(plymouth_pid, "r");
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
270
  /* Try the new pid file location */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
271
  if(pidfile != NULL){
272
    ret = fscanf(pidfile, "%" SCNuMAX, &maxvalue);
273
    if(ret != 1){
274
      maxvalue = 0;
275
    }
276
    fclose(pidfile);
277
  }
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
278
  /* Try the old pid file location */
279
  if(maxvalue == 0){
280
    pidfile = fopen(plymouth_pid, "r");
281
    if(pidfile != NULL){
282
      ret = fscanf(pidfile, "%" SCNuMAX, &maxvalue);
283
      if(ret != 1){
284
	maxvalue = 0;
285
      }
286
      fclose(pidfile);
287
    }
288
  }
289
  /* Look for a plymouth process */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
290
  if(maxvalue == 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
291
    struct dirent **direntries = NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
292
    ret = scandir("/proc", &direntries, is_plymouth, alphasort);
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
293
    if (ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
294
      error_plus(0, errno, "scandir");
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
295
    }
296
    if (ret > 0){
297
      ret = sscanf(direntries[0]->d_name, "%" SCNuMAX, &maxvalue);
298
      if (ret < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
299
	error_plus(0, errno, "sscanf");
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
300
      }
301
    }
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
302
    /* scandir might preallocate for this variable (man page unclear).
237.7.33 by Teddy Hogeborn
Merge from Björn.
303
       even if ret == 0, therefore we need to free it. */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
304
    free(direntries);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
305
  }
306
  pid_t pid;
307
  pid = (pid_t)maxvalue;
308
  if((uintmax_t)pid == maxvalue){
309
    return pid;
310
  }
311
  
312
  return 0;
313
}
314
315
const char **getargv(pid_t pid){
316
  int cl_fd;
317
  char *cmdline_filename;
318
  ssize_t sret;
319
  int ret;
320
  
321
  ret = asprintf(&cmdline_filename, "/proc/%" PRIuMAX "/cmdline",
322
		 (uintmax_t)pid);
323
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
324
    error_plus(0, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
325
    return NULL;
326
  }
327
  
328
  /* Open /proc/<pid>/cmdline  */
329
  cl_fd = open(cmdline_filename, O_RDONLY);
330
  free(cmdline_filename);
331
  if(cl_fd == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
332
    error_plus(0, errno, "open");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
333
    return NULL;
334
  }
335
  
336
  size_t cmdline_allocated = 0;
337
  size_t cmdline_len = 0;
338
  char *cmdline = NULL;
339
  char *tmp;
340
  const size_t blocksize = 1024;
341
  do {
342
    /* Allocate more space? */
343
    if(cmdline_len + blocksize > cmdline_allocated){
344
      tmp = realloc(cmdline, cmdline_allocated + blocksize);
345
      if(tmp == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
346
	error_plus(0, errno, "realloc");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
347
	free(cmdline);
348
	close(cl_fd);
349
	return NULL;
350
      }
351
      cmdline = tmp;
352
      cmdline_allocated += blocksize;
353
    }
354
    
355
    /* Read data */
356
    sret = read(cl_fd, cmdline + cmdline_len,
357
		cmdline_allocated - cmdline_len);
358
    if(sret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
359
      error_plus(0, errno, "read");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
360
      free(cmdline);
361
      close(cl_fd);
362
      return NULL;
363
    }
364
    cmdline_len += (size_t)sret;
365
  } while(sret != 0);
366
  ret = close(cl_fd);
367
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
368
    error_plus(0, errno, "close");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
369
    free(cmdline);
370
    return NULL;
371
  }
372
  
373
  /* we got cmdline and cmdline_len, ignore rest... */
237.2.195 by teddy at bsnet
* plugins.d/usplash.c (main): BUG FIX: allocate space for the final
374
  char **argv = malloc((argz_count(cmdline, cmdline_len) + 1)
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
375
		       * sizeof(char *)); /* Get number of args */
376
  if(argv == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
377
    error_plus(0, errno, "argv = malloc()");
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
378
    free(cmdline);
379
    return NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
380
  }
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
381
  argz_extract(cmdline, cmdline_len, argv); /* Create argv */
382
  return (const char **)argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
383
}
384
385
int main(__attribute__((unused))int argc,
386
	 __attribute__((unused))char **argv){
387
  char *prompt;
388
  char *prompt_arg;
389
  pid_t plymouth_command_pid;
390
  int ret;
391
  bool bret;
392
393
  /* test -x /bin/plymouth */
394
  ret = access(plymouth_path, X_OK);
395
  if(ret == -1){
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
396
    /* Plymouth is probably not installed.  Don't print an error
397
       message, just exit. */
398
    exit(EX_UNAVAILABLE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
399
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
400
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
401
  { /* Add signal handlers */
402
    struct sigaction old_action,
403
      new_action = { .sa_handler = termination_handler,
404
		     .sa_flags = 0 };
405
    sigemptyset(&new_action.sa_mask);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
406
    for(int *sig = (int[]){ SIGINT, SIGHUP, SIGTERM, 0 };
407
	*sig != 0; sig++){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
408
      ret = sigaddset(&new_action.sa_mask, *sig);
409
      if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
410
	error_plus(EX_OSERR, errno, "sigaddset");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
411
      }
412
      ret = sigaction(*sig, NULL, &old_action);
413
      if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
414
	error_plus(EX_OSERR, errno, "sigaction");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
415
      }
416
      if(old_action.sa_handler != SIG_IGN){
417
	ret = sigaction(*sig, &new_action, NULL);
418
	if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
419
	  error_plus(EX_OSERR, errno, "sigaction");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
420
	}
421
      }
422
    }
423
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
424
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
425
  /* plymouth --ping */
426
  bret = exec_and_wait(&plymouth_command_pid, plymouth_path,
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
427
		       (const char *[])
428
		       { plymouth_path, "--ping", NULL },
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
429
		       true, false);
430
  if(not bret){
431
    if(interrupted_by_signal){
432
      kill_and_wait(plymouth_command_pid);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
433
      exit(EXIT_FAILURE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
434
    }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
435
    /* Plymouth is probably not running.  Don't print an error
436
       message, just exit. */
437
    exit(EX_UNAVAILABLE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
438
  }
439
  
440
  prompt = makeprompt();
441
  ret = asprintf(&prompt_arg, "--prompt=%s", prompt);
442
  free(prompt);
443
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
444
    error_plus(EX_OSERR, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
445
  }
446
  
447
  /* plymouth ask-for-password --prompt="$prompt" */
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
448
  bret = exec_and_wait(&plymouth_command_pid,
449
		       plymouth_path, (const char *[])
450
		       { plymouth_path, "ask-for-password",
451
			   prompt_arg, NULL },
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
452
		       true, false);
453
  free(prompt_arg);
454
  if(bret){
455
    exit(EXIT_SUCCESS);
456
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
457
  if(not interrupted_by_signal){
458
    /* exec_and_wait failed for some other reason */
459
    exit(EXIT_FAILURE);
460
  }
461
  kill_and_wait(plymouth_command_pid);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
462
  
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
463
  const char **plymouthd_argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
464
  pid_t pid = get_pid();
465
  if(pid == 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
466
    error_plus(0, 0, "plymouthd pid not found");
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
467
    plymouthd_argv = plymouthd_default_argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
468
  } else {
469
    plymouthd_argv = getargv(pid);
470
  }
471
  
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
472
  bret = exec_and_wait(NULL, plymouth_path, (const char *[])
473
		       { plymouth_path, "quit", NULL },
474
		       false, false);
475
  if(not bret){
476
    exit(EXIT_FAILURE);
477
  }
478
  bret = exec_and_wait(NULL, plymouthd_path, plymouthd_argv,
479
		       false, true);
480
  if(not bret){
481
    exit(EXIT_FAILURE);
482
  }
483
  exec_and_wait(NULL, plymouth_path, (const char *[])
484
		{ plymouth_path, "show-splash", NULL },
485
		false, false);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
486
  exit(EXIT_FAILURE);
487
}