/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 -*- */
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/*
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.
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 * 
237.7.355 by Teddy Hogeborn
Update copyright year.
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 * Copyright © 2010-2016 Teddy Hogeborn
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 * Copyright © 2010-2016 Björn Påhlsson
237.2.207 by Teddy Hogeborn
Update copyright year to "2010" wherever appropriate.
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 * 
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
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 * License, or (at your option) any later version.
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 * 
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 * 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
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 * General Public License for more details.
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 * 
18
 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see
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 * <http://www.gnu.org/licenses/>.
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 * 
237.11.2 by Teddy Hogeborn
Change "fukt.bsnet.se" to "recompile.se" throughout.
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 * Contact the authors at <mandos@recompile.se>.
237.2.207 by Teddy Hogeborn
Update copyright year to "2010" wherever appropriate.
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 */
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() */
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#include <signal.h>		/* sig_atomic_t, struct sigaction,
27
				   sigemptyset(), sigaddset(), SIGINT,
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				   SIGHUP, SIGTERM, sigaction(),
29
				   kill(), SIG_IGN */
30
#include <stdbool.h>		/* bool, false, true */
31
#include <fcntl.h>		/* open(), O_RDONLY */
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#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() */
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#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
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#include <unistd.h>		/* close(), readlink(), read(),
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				   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.
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#include <argz.h>		/* argz_count(), argz_extract() */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
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#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) */
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const char plymouth_old_pid[] = "/dev/.initramfs/plymouth.pid";
60
/* Used by Ubuntu 11.10 (Oneiric Ocelot) */
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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
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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",
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					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;
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  char *text;
83
  int ret;
84
  
85
  va_start(ap, formatstring);
86
  ret = vasprintf(&text, formatstring, ap);
237.7.218 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
87
  if(ret == -1){
237.7.33 by Teddy Hogeborn
Merge from Björn.
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    fprintf(stderr, "Mandos plugin %s: ",
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	    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
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/* 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
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,
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
159
		   const char * const *argv, bool interruptable,
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
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
    
237.7.381 by Teddy Hogeborn
Client: Fix plymouth agent; broken since 1.7.2.
177
    char **new_argv = malloc(sizeof(const char *));
178
    if(new_argv == NULL){
179
      error_plus(0, errno, "malloc");
180
      _exit(EX_OSERR);
181
    }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
182
    char **tmp;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
183
    int i = 0;
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
184
    for (; argv[i]!=NULL; i++){
237.7.381 by Teddy Hogeborn
Client: Fix plymouth agent; broken since 1.7.2.
185
      tmp = realloc(new_argv, sizeof(const char *) * ((size_t)i + 2));
237.7.218 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
186
      if(tmp == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
187
	error_plus(0, errno, "realloc");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
188
	free(new_argv);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
189
	_exit(EX_OSERR);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
190
      }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
191
      new_argv = tmp;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
192
      new_argv[i] = strdup(argv[i]);
193
    }
237.7.10 by Teddy Hogeborn
* plugins.d/plymouth.c: Fixed comment to "Plymouth" instead of "Usplash".
194
    new_argv[i] = NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
195
    
196
    execv(path, (char *const *)new_argv);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
197
    error_plus(0, errno, "execv");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
198
    _exit(EXIT_FAILURE);
199
  }
200
  if(pid_return != NULL){
201
    *pid_return = pid;
202
  }
203
  do {
204
    ret = waitpid(pid, &status, 0);
205
  } while(ret == -1 and errno == EINTR
206
	  and ((not interrupted_by_signal)
207
	       or (not interruptable)));
208
  if(interrupted_by_signal and interruptable){
209
    return false;
210
  }
211
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
212
    error_plus(0, errno, "waitpid");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
213
    return false;
214
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
215
  if(WIFEXITED(status) and (WEXITSTATUS(status) == 0)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
216
    return true;
217
  }
218
  return false;
219
}
220
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
221
__attribute__((nonnull))
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
222
int is_plymouth(const struct dirent *proc_entry){
223
  int ret;
224
  {
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
225
    uintmax_t proc_id;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
226
    char *tmp;
227
    errno = 0;
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
228
    proc_id = strtoumax(proc_entry->d_name, &tmp, 10);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
229
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
230
    if(errno != 0 or *tmp != '\0'
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
231
       or proc_id != (uintmax_t)((pid_t)proc_id)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
232
      return 0;
233
    }
234
  }
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
235
  char exe_target[sizeof(plymouthd_path)];
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
236
  char *exe_link;
237
  ret = asprintf(&exe_link, "/proc/%s/exe", proc_entry->d_name);
238
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
239
    error_plus(0, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
240
    return 0;
241
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
242
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
243
  struct stat exe_stat;
244
  ret = lstat(exe_link, &exe_stat);
245
  if(ret == -1){
246
    free(exe_link);
247
    if(errno != ENOENT){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
248
      error_plus(0, errno, "lstat");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
249
    }
250
    return 0;
251
  }
252
  
253
  if(not S_ISLNK(exe_stat.st_mode)
254
     or exe_stat.st_uid != 0
255
     or exe_stat.st_gid != 0){
256
    free(exe_link);
257
    return 0;
258
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
259
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
260
  ssize_t sret = readlink(exe_link, exe_target, sizeof(exe_target));
261
  free(exe_link);
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
262
  if((sret != (ssize_t)sizeof(plymouthd_path)-1) or
263
      (memcmp(plymouthd_path, exe_target,
264
	      sizeof(plymouthd_path)-1) != 0)){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
265
    return 0;
266
  }
267
  return 1;
268
}
269
270
pid_t get_pid(void){
271
  int ret;
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
272
  uintmax_t proc_id = 0;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
273
  FILE *pidfile = fopen(plymouth_pid, "r");
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
274
  /* Try the new pid file location */
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
275
  if(pidfile != NULL){
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
276
    ret = fscanf(pidfile, "%" SCNuMAX, &proc_id);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
277
    if(ret != 1){
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
278
      proc_id = 0;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
279
    }
280
    fclose(pidfile);
281
  }
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
282
  /* Try the old pid file location */
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
283
  if(proc_id == 0){
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
284
    pidfile = fopen(plymouth_pid, "r");
285
    if(pidfile != NULL){
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
286
      ret = fscanf(pidfile, "%" SCNuMAX, &proc_id);
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
287
      if(ret != 1){
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
288
	proc_id = 0;
237.7.52 by Teddy Hogeborn
* plugins.d/plymouth.c (plymouth_pid): Changed to
289
      }
290
      fclose(pidfile);
291
    }
292
  }
293
  /* Look for a plymouth process */
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
294
  if(proc_id == 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
295
    struct dirent **direntries = NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
296
    ret = scandir("/proc", &direntries, is_plymouth, alphasort);
237.7.218 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
297
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
298
      error_plus(0, errno, "scandir");
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
299
    }
237.7.218 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
300
    if(ret > 0){
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
301
      ret = sscanf(direntries[0]->d_name, "%" SCNuMAX, &proc_id);
237.7.218 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
302
      if(ret < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
303
	error_plus(0, errno, "sscanf");
275.1.1 by Björn Påhlsson
password-prompt: added conflic handling with plymouth daemon.
304
      }
305
    }
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
306
    /* scandir might preallocate for this variable (man page unclear).
237.7.33 by Teddy Hogeborn
Merge from Björn.
307
       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.
308
    free(direntries);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
309
  }
310
  pid_t pid;
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
311
  pid = (pid_t)proc_id;
312
  if((uintmax_t)pid == proc_id){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
313
    return pid;
314
  }
315
  
316
  return 0;
317
}
318
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
319
const char * const * getargv(pid_t pid){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
320
  int cl_fd;
321
  char *cmdline_filename;
322
  ssize_t sret;
323
  int ret;
324
  
325
  ret = asprintf(&cmdline_filename, "/proc/%" PRIuMAX "/cmdline",
326
		 (uintmax_t)pid);
327
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
328
    error_plus(0, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
329
    return NULL;
330
  }
331
  
332
  /* Open /proc/<pid>/cmdline  */
333
  cl_fd = open(cmdline_filename, O_RDONLY);
334
  free(cmdline_filename);
335
  if(cl_fd == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
336
    error_plus(0, errno, "open");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
337
    return NULL;
338
  }
339
  
340
  size_t cmdline_allocated = 0;
341
  size_t cmdline_len = 0;
342
  char *cmdline = NULL;
343
  char *tmp;
344
  const size_t blocksize = 1024;
345
  do {
346
    /* Allocate more space? */
347
    if(cmdline_len + blocksize > cmdline_allocated){
348
      tmp = realloc(cmdline, cmdline_allocated + blocksize);
349
      if(tmp == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
350
	error_plus(0, errno, "realloc");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
351
	free(cmdline);
352
	close(cl_fd);
353
	return NULL;
354
      }
355
      cmdline = tmp;
356
      cmdline_allocated += blocksize;
357
    }
358
    
359
    /* Read data */
360
    sret = read(cl_fd, cmdline + cmdline_len,
361
		cmdline_allocated - cmdline_len);
362
    if(sret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
363
      error_plus(0, errno, "read");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
364
      free(cmdline);
365
      close(cl_fd);
366
      return NULL;
367
    }
368
    cmdline_len += (size_t)sret;
369
  } while(sret != 0);
370
  ret = close(cl_fd);
371
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
372
    error_plus(0, errno, "close");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
373
    free(cmdline);
374
    return NULL;
375
  }
376
  
377
  /* 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
378
  char **argv = malloc((argz_count(cmdline, cmdline_len) + 1)
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
379
		       * sizeof(char *)); /* Get number of args */
380
  if(argv == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
381
    error_plus(0, errno, "argv = malloc()");
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
382
    free(cmdline);
383
    return NULL;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
384
  }
237.2.194 by teddy at bsnet
* debian/watch: Also watch for "*.tar.xz" files.
385
  argz_extract(cmdline, cmdline_len, argv); /* Create argv */
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
386
  return (const char * const *)argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
387
}
388
389
int main(__attribute__((unused))int argc,
390
	 __attribute__((unused))char **argv){
391
  char *prompt;
392
  char *prompt_arg;
393
  pid_t plymouth_command_pid;
394
  int ret;
395
  bool bret;
396
397
  /* test -x /bin/plymouth */
398
  ret = access(plymouth_path, X_OK);
399
  if(ret == -1){
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
400
    /* Plymouth is probably not installed.  Don't print an error
401
       message, just exit. */
402
    exit(EX_UNAVAILABLE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
403
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
404
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
405
  { /* Add signal handlers */
406
    struct sigaction old_action,
407
      new_action = { .sa_handler = termination_handler,
408
		     .sa_flags = 0 };
409
    sigemptyset(&new_action.sa_mask);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
410
    for(int *sig = (int[]){ SIGINT, SIGHUP, SIGTERM, 0 };
411
	*sig != 0; sig++){
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
412
      ret = sigaddset(&new_action.sa_mask, *sig);
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, "sigaddset");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
415
      }
416
      ret = sigaction(*sig, NULL, &old_action);
417
      if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
418
	error_plus(EX_OSERR, errno, "sigaction");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
419
      }
420
      if(old_action.sa_handler != SIG_IGN){
421
	ret = sigaction(*sig, &new_action, NULL);
422
	if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
423
	  error_plus(EX_OSERR, errno, "sigaction");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
424
	}
425
      }
426
    }
427
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
428
  
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
429
  /* plymouth --ping */
430
  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
431
		       (const char *[])
432
		       { plymouth_path, "--ping", NULL },
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
433
		       true, false);
434
  if(not bret){
435
    if(interrupted_by_signal){
436
      kill_and_wait(plymouth_command_pid);
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
437
      exit(EXIT_FAILURE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
438
    }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
439
    /* Plymouth is probably not running.  Don't print an error
440
       message, just exit. */
441
    exit(EX_UNAVAILABLE);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
442
  }
443
  
444
  prompt = makeprompt();
445
  ret = asprintf(&prompt_arg, "--prompt=%s", prompt);
446
  free(prompt);
447
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
448
    error_plus(EX_OSERR, errno, "asprintf");
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
449
  }
450
  
451
  /* plymouth ask-for-password --prompt="$prompt" */
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
452
  bret = exec_and_wait(&plymouth_command_pid,
453
		       plymouth_path, (const char *[])
454
		       { plymouth_path, "ask-for-password",
455
			   prompt_arg, NULL },
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
456
		       true, false);
457
  free(prompt_arg);
458
  if(bret){
459
    exit(EXIT_SUCCESS);
460
  }
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
461
  if(not interrupted_by_signal){
462
    /* exec_and_wait failed for some other reason */
463
    exit(EXIT_FAILURE);
464
  }
465
  kill_and_wait(plymouth_command_pid);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
466
  
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
467
  const char * const *plymouthd_argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
468
  pid_t pid = get_pid();
469
  if(pid == 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
470
    error_plus(0, 0, "plymouthd pid not found");
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
471
    plymouthd_argv = plymouthd_default_argv;
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
472
  } else {
473
    plymouthd_argv = getargv(pid);
474
  }
475
  
237.2.199 by teddy at bsnet
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
476
  bret = exec_and_wait(NULL, plymouth_path, (const char *[])
477
		       { plymouth_path, "quit", NULL },
478
		       false, false);
479
  if(not bret){
480
    exit(EXIT_FAILURE);
481
  }
482
  bret = exec_and_wait(NULL, plymouthd_path, plymouthd_argv,
483
		       false, true);
484
  if(not bret){
485
    exit(EXIT_FAILURE);
486
  }
487
  exec_and_wait(NULL, plymouth_path, (const char *[])
488
		{ plymouth_path, "show-splash", NULL },
489
		false, false);
24.1.157 by Björn Påhlsson
added the actually plugin file for plymouth
490
  exit(EXIT_FAILURE);
491
}