/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
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 * 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/>.
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 * 
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
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#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
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#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.
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				   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",
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					"--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.
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/* 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".
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  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
157
bool exec_and_wait(pid_t *pid_return, const char *path,
158
		   const char **argv, bool interruptable,
159
		   bool daemonize){
160
  int status;
161
  int ret;
162
  pid_t pid;
163
  pid = fork();
164
  if(pid == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
165
    error_plus(0, errno, "fork");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
166
    return false;
167
  }
168
  if(pid == 0){
169
    /* Child */
170
    if(daemonize){
171
      if(not become_a_daemon()){
172
	_exit(EX_OSERR);
173
      }
174
    }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
175
    
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
176
    char **new_argv = NULL;
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
177
    char **tmp;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
178
    int i = 0;
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
179
    for (; argv[i]!=NULL; i++){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
180
      tmp = realloc(new_argv, sizeof(const char *) * ((size_t)i + 1));
181
      if (tmp == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
182
	error_plus(0, errno, "realloc");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
183
	free(new_argv);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
184
	_exit(EX_OSERR);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
185
      }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
186
      new_argv = tmp;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
187
      new_argv[i] = strdup(argv[i]);
188
    }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
189
    new_argv[i] = NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
190
    
191
    execv(path, (char *const *)new_argv);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
192
    error_plus(0, errno, "execv");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
193
    _exit(EXIT_FAILURE);
194
  }
195
  if(pid_return != NULL){
196
    *pid_return = pid;
197
  }
198
  do {
199
    ret = waitpid(pid, &status, 0);
200
  } while(ret == -1 and errno == EINTR
201
	  and ((not interrupted_by_signal)
202
	       or (not interruptable)));
203
  if(interrupted_by_signal and interruptable){
204
    return false;
205
  }
206
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
207
    error_plus(0, errno, "waitpid");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
208
    return false;
209
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
210
  if(WIFEXITED(status) and (WEXITSTATUS(status) == 0)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
211
    return true;
212
  }
213
  return false;
214
}
215
216
int is_plymouth(const struct dirent *proc_entry){
217
  int ret;
218
  {
219
    uintmax_t maxvalue;
220
    char *tmp;
221
    errno = 0;
222
    maxvalue = strtoumax(proc_entry->d_name, &tmp, 10);
223
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
224
    if(errno != 0 or *tmp != '\0'
225
       or maxvalue != (uintmax_t)((pid_t)maxvalue)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
226
      return 0;
227
    }
228
  }
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
229
  char exe_target[sizeof(plymouthd_path)];
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
230
  char *exe_link;
231
  ret = asprintf(&exe_link, "/proc/%s/exe", proc_entry->d_name);
232
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
233
    error_plus(0, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
234
    return 0;
235
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
236
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
237
  struct stat exe_stat;
238
  ret = lstat(exe_link, &exe_stat);
239
  if(ret == -1){
240
    free(exe_link);
241
    if(errno != ENOENT){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
242
      error_plus(0, errno, "lstat");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
243
    }
244
    return 0;
245
  }
246
  
247
  if(not S_ISLNK(exe_stat.st_mode)
248
     or exe_stat.st_uid != 0
249
     or exe_stat.st_gid != 0){
250
    free(exe_link);
251
    return 0;
252
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
253
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
254
  ssize_t sret = readlink(exe_link, exe_target, sizeof(exe_target));
255
  free(exe_link);
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
256
  if((sret != (ssize_t)sizeof(plymouthd_path)-1) or
257
      (memcmp(plymouthd_path, exe_target,
258
	      sizeof(plymouthd_path)-1) != 0)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
259
    return 0;
260
  }
261
  return 1;
262
}
263
264
pid_t get_pid(void){
265
  int ret;
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
266
  uintmax_t maxvalue = 0;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
267
  FILE *pidfile = fopen(plymouth_pid, "r");
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
268
  /* Try the new pid file location */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
269
  if(pidfile != NULL){
270
    ret = fscanf(pidfile, "%" SCNuMAX, &maxvalue);
271
    if(ret != 1){
272
      maxvalue = 0;
273
    }
274
    fclose(pidfile);
275
  }
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
276
  /* Try the old pid file location */
277
  if(maxvalue == 0){
278
    pidfile = fopen(plymouth_pid, "r");
279
    if(pidfile != NULL){
280
      ret = fscanf(pidfile, "%" SCNuMAX, &maxvalue);
281
      if(ret != 1){
282
	maxvalue = 0;
283
      }
284
      fclose(pidfile);
285
    }
286
  }
287
  /* Look for a plymouth process */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
288
  if(maxvalue == 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
289
    struct dirent **direntries = NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
290
    ret = scandir("/proc", &direntries, is_plymouth, alphasort);
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
291
    if (ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
292
      error_plus(0, errno, "scandir");
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
293
    }
294
    if (ret > 0){
295
      ret = sscanf(direntries[0]->d_name, "%" SCNuMAX, &maxvalue);
296
      if (ret < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
297
	error_plus(0, errno, "sscanf");
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
298
      }
299
    }
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
300
    /* scandir might preallocate for this variable (man page unclear).
237.7.33 by Teddy Hogeborn
Merge from Björn.
301
       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.
302
    free(direntries);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
303
  }
304
  pid_t pid;
305
  pid = (pid_t)maxvalue;
306
  if((uintmax_t)pid == maxvalue){
307
    return pid;
308
  }
309
  
310
  return 0;
311
}
312
313
const char **getargv(pid_t pid){
314
  int cl_fd;
315
  char *cmdline_filename;
316
  ssize_t sret;
317
  int ret;
318
  
319
  ret = asprintf(&cmdline_filename, "/proc/%" PRIuMAX "/cmdline",
320
		 (uintmax_t)pid);
321
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
322
    error_plus(0, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
323
    return NULL;
324
  }
325
  
326
  /* Open /proc/<pid>/cmdline  */
327
  cl_fd = open(cmdline_filename, O_RDONLY);
328
  free(cmdline_filename);
329
  if(cl_fd == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
330
    error_plus(0, errno, "open");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
331
    return NULL;
332
  }
333
  
334
  size_t cmdline_allocated = 0;
335
  size_t cmdline_len = 0;
336
  char *cmdline = NULL;
337
  char *tmp;
338
  const size_t blocksize = 1024;
339
  do {
340
    /* Allocate more space? */
341
    if(cmdline_len + blocksize > cmdline_allocated){
342
      tmp = realloc(cmdline, cmdline_allocated + blocksize);
343
      if(tmp == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
344
	error_plus(0, errno, "realloc");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
345
	free(cmdline);
346
	close(cl_fd);
347
	return NULL;
348
      }
349
      cmdline = tmp;
350
      cmdline_allocated += blocksize;
351
    }
352
    
353
    /* Read data */
354
    sret = read(cl_fd, cmdline + cmdline_len,
355
		cmdline_allocated - cmdline_len);
356
    if(sret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
357
      error_plus(0, errno, "read");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
358
      free(cmdline);
359
      close(cl_fd);
360
      return NULL;
361
    }
362
    cmdline_len += (size_t)sret;
363
  } while(sret != 0);
364
  ret = close(cl_fd);
365
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
366
    error_plus(0, errno, "close");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
367
    free(cmdline);
368
    return NULL;
369
  }
370
  
371
  /* 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
372
  char **argv = malloc((argz_count(cmdline, cmdline_len) + 1)
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
373
		       * sizeof(char *)); /* Get number of args */
374
  if(argv == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
375
    error_plus(0, errno, "argv = malloc()");
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
376
    free(cmdline);
377
    return NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
378
  }
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
379
  argz_extract(cmdline, cmdline_len, argv); /* Create argv */
380
  return (const char **)argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
381
}
382
383
int main(__attribute__((unused))int argc,
384
	 __attribute__((unused))char **argv){
385
  char *prompt;
386
  char *prompt_arg;
387
  pid_t plymouth_command_pid;
388
  int ret;
389
  bool bret;
390
391
  /* test -x /bin/plymouth */
392
  ret = access(plymouth_path, X_OK);
393
  if(ret == -1){
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
394
    /* Plymouth is probably not installed.  Don't print an error
395
       message, just exit. */
396
    exit(EX_UNAVAILABLE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
397
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
398
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
399
  { /* Add signal handlers */
400
    struct sigaction old_action,
401
      new_action = { .sa_handler = termination_handler,
402
		     .sa_flags = 0 };
403
    sigemptyset(&new_action.sa_mask);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
404
    for(int *sig = (int[]){ SIGINT, SIGHUP, SIGTERM, 0 };
405
	*sig != 0; sig++){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
406
      ret = sigaddset(&new_action.sa_mask, *sig);
407
      if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
408
	error_plus(EX_OSERR, errno, "sigaddset");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
409
      }
410
      ret = sigaction(*sig, NULL, &old_action);
411
      if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
412
	error_plus(EX_OSERR, errno, "sigaction");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
413
      }
414
      if(old_action.sa_handler != SIG_IGN){
415
	ret = sigaction(*sig, &new_action, NULL);
416
	if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
417
	  error_plus(EX_OSERR, errno, "sigaction");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
418
	}
419
      }
420
    }
421
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
422
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
423
  /* plymouth --ping */
424
  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
425
		       (const char *[])
426
		       { plymouth_path, "--ping", NULL },
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
427
		       true, false);
428
  if(not bret){
429
    if(interrupted_by_signal){
430
      kill_and_wait(plymouth_command_pid);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
431
      exit(EXIT_FAILURE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
432
    }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
433
    /* Plymouth is probably not running.  Don't print an error
434
       message, just exit. */
435
    exit(EX_UNAVAILABLE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
436
  }
437
  
438
  prompt = makeprompt();
439
  ret = asprintf(&prompt_arg, "--prompt=%s", prompt);
440
  free(prompt);
441
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
442
    error_plus(EX_OSERR, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
443
  }
444
  
445
  /* plymouth ask-for-password --prompt="$prompt" */
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
446
  bret = exec_and_wait(&plymouth_command_pid,
447
		       plymouth_path, (const char *[])
448
		       { plymouth_path, "ask-for-password",
449
			   prompt_arg, NULL },
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
450
		       true, false);
451
  free(prompt_arg);
452
  if(bret){
453
    exit(EXIT_SUCCESS);
454
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
455
  if(not interrupted_by_signal){
456
    /* exec_and_wait failed for some other reason */
457
    exit(EXIT_FAILURE);
458
  }
459
  kill_and_wait(plymouth_command_pid);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
460
  
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
461
  const char **plymouthd_argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
462
  pid_t pid = get_pid();
463
  if(pid == 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
464
    error_plus(0, 0, "plymouthd pid not found");
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
465
    plymouthd_argv = plymouthd_default_argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
466
  } else {
467
    plymouthd_argv = getargv(pid);
468
  }
469
  
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
470
  bret = exec_and_wait(NULL, plymouth_path, (const char *[])
471
		       { plymouth_path, "quit", NULL },
472
		       false, false);
473
  if(not bret){
474
    exit(EXIT_FAILURE);
475
  }
476
  bret = exec_and_wait(NULL, plymouthd_path, plymouthd_argv,
477
		       false, true);
478
  if(not bret){
479
    exit(EXIT_FAILURE);
480
  }
481
  exec_and_wait(NULL, plymouth_path, (const char *[])
482
		{ plymouth_path, "show-splash", NULL },
483
		false, false);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
484
  exit(EXIT_FAILURE);
485
}