/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
237.1.2 by Teddy Hogeborn
Further steps towards a D-Bus server interface, plus minor syntax
1
/*  -*- coding: utf-8 -*- */
2
/*
3
 * Passprompt - Read a password from usplash and output it
4
 * 
237.2.9 by Teddy Hogeborn
* README: Update copyright year; add "2009".
5
 * Copyright © 2008,2009 Teddy Hogeborn
6
 * Copyright © 2008,2009 Björn Påhlsson
237.1.2 by Teddy Hogeborn
Further steps towards a D-Bus server interface, plus minor syntax
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.
12
 * 
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
 * 
22
 * Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
23
 * <https://www.fukt.bsnet.se/~teddy/>.
24
 */
25
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
26
#define _GNU_SOURCE		/* asprintf() */
27
#include <signal.h>		/* sig_atomic_t, struct sigaction,
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
28
				   sigemptyset(), sigaddset(), SIGINT,
29
				   SIGHUP, SIGTERM, sigaction(),
30
				   SIG_IGN, kill(), SIGKILL */
31
#include <stdbool.h>		/* bool, false, true */
32
#include <fcntl.h>		/* open(), O_WRONLY, O_RDONLY */
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
33
#include <iso646.h>		/* and, or, not*/
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
34
#include <errno.h>		/* errno, EINTR */
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
35
#include <sys/types.h>		/* size_t, ssize_t, pid_t, DIR, struct
36
				   dirent */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
37
#include <stddef.h>		/* NULL */
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
38
#include <string.h>		/* strlen(), memcmp() */
39
#include <stdio.h>		/* asprintf(), perror() */
40
#include <unistd.h>		/* close(), write(), readlink(),
41
				   read(), STDOUT_FILENO, sleep(),
42
				   fork(), setuid(), geteuid(),
43
				   setsid(), chdir(), dup2(),
44
				   STDERR_FILENO, execv() */
45
#include <stdlib.h>		/* free(), EXIT_FAILURE, strtoul(),
46
				   realloc(), EXIT_SUCCESS, malloc(),
47
				   _exit() */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
48
#include <stdlib.h>		/* getenv() */
49
#include <dirent.h>		/* opendir(), readdir(), closedir() */
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
50
#include <sys/stat.h>		/* struct stat, lstat(), S_ISLNK */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
51
52
sig_atomic_t interrupted_by_signal = 0;
53
54
static void termination_handler(__attribute__((unused))int signum){
55
  interrupted_by_signal = 1;
56
}
57
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
58
static bool usplash_write(const char *cmd, const char *arg){
59
  /* 
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
60
   * usplash_write("TIMEOUT", "15") will write "TIMEOUT 15\0"
61
   * usplash_write("PULSATE", NULL) will write "PULSATE\0"
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
62
   * SEE ALSO
63
   *         usplash_write(8)
64
   */
65
  int ret;
66
  int fifo_fd;
67
  do{
68
    fifo_fd = open("/dev/.initramfs/usplash_fifo", O_WRONLY);
69
    if(fifo_fd == -1 and (errno != EINTR or interrupted_by_signal)){
70
      return false;
71
    }
72
  }while(fifo_fd == -1);
73
  
74
  const char *cmd_line;
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
75
  size_t cmd_line_len;
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
76
  char *cmd_line_alloc = NULL;
77
  if(arg == NULL){
78
    cmd_line = cmd;
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
79
    cmd_line_len = strlen(cmd);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
80
  }else{
81
    do{
82
      ret = asprintf(&cmd_line_alloc, "%s %s", cmd, arg);
83
      if(ret == -1 and (errno != EINTR or interrupted_by_signal)){
84
	int e = errno;
85
	close(fifo_fd);
86
	errno = e;
87
	return false;
88
      }
89
    }while(ret == -1);
90
    cmd_line = cmd_line_alloc;
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
91
    cmd_line_len = (size_t)ret + 1;
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
92
  }
93
  
94
  size_t written = 0;
95
  while(not interrupted_by_signal and written < cmd_line_len){
96
    ret = write(fifo_fd, cmd_line + written,
97
		cmd_line_len - written);
98
    if(ret == -1){
99
      if(errno != EINTR or interrupted_by_signal){
100
	int e = errno;
101
	close(fifo_fd);
102
	free(cmd_line_alloc);
103
	errno = e;
104
	return false;
105
      } else {
106
	continue;
107
      }
108
    }
109
    written += (size_t)ret;
110
  }
111
  free(cmd_line_alloc);
112
  do{
113
    ret = close(fifo_fd);
114
    if(ret == -1 and (errno != EINTR or interrupted_by_signal)){
115
      return false;
116
    }
117
  }while(ret == -1);
118
  if(interrupted_by_signal){
119
    return false;
120
  }
121
  return true;
122
}
123
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
124
int main(__attribute__((unused))int argc,
125
	 __attribute__((unused))char **argv){
126
  int ret = 0;
127
  ssize_t sret;
128
  bool an_error_occured = false;
129
  
130
  /* Create prompt string */
131
  char *prompt = NULL;
132
  {
133
    const char *const cryptsource = getenv("cryptsource");
134
    const char *const crypttarget = getenv("crypttarget");
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
135
    const char prompt_start[] = "Enter passphrase to unlock the disk";
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
136
    
137
    if(cryptsource == NULL){
138
      if(crypttarget == NULL){
139
	ret = asprintf(&prompt, "%s: ", prompt_start);
140
      } else {
141
	ret = asprintf(&prompt, "%s (%s): ", prompt_start,
142
		       crypttarget);
143
      }
144
    } else {
145
      if(crypttarget == NULL){
146
	ret = asprintf(&prompt, "%s %s: ", prompt_start, cryptsource);
147
      } else {
148
	ret = asprintf(&prompt, "%s %s (%s): ", prompt_start,
149
		       cryptsource, crypttarget);
150
      }
151
    }
152
    if(ret == -1){
153
      return EXIT_FAILURE;
154
    }
155
  }
156
  
157
  /* Find usplash process */
158
  pid_t usplash_pid = 0;
159
  char *cmdline = NULL;
160
  size_t cmdline_len = 0;
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
161
  const char usplash_name[] = "/sbin/usplash";
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
162
  {
163
    DIR *proc_dir = opendir("/proc");
164
    if(proc_dir == NULL){
165
      free(prompt);
166
      perror("opendir");
167
      return EXIT_FAILURE;
168
    }
169
    for(struct dirent *proc_ent = readdir(proc_dir);
170
	proc_ent != NULL;
171
	proc_ent = readdir(proc_dir)){
172
      pid_t pid = (pid_t) strtoul(proc_ent->d_name, NULL, 10);
173
      if(pid == 0){
174
	/* Not a process */
175
	continue;
176
      }
177
      /* Find the executable name by doing readlink() on the
178
	 /proc/<pid>/exe link */
179
      char exe_target[sizeof(usplash_name)];
180
      {
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
181
	/* create file name string */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
182
	char *exe_link;
183
	ret = asprintf(&exe_link, "/proc/%s/exe", proc_ent->d_name);
184
	if(ret == -1){
185
	  perror("asprintf");
186
	  free(prompt);
187
	  closedir(proc_dir);
188
	  return EXIT_FAILURE;
189
	}
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
190
	
191
	/* Check that it refers to a symlink owned by root:root */
192
	struct stat exe_stat;
193
	ret = lstat(exe_link, &exe_stat);
194
	if(ret == -1){
195
	  perror("lstat");
196
	  free(exe_link);
197
	  free(prompt);
198
	  closedir(proc_dir);
199
	  return EXIT_FAILURE;
200
	}
201
	if(not S_ISLNK(exe_stat.st_mode)
202
	   or exe_stat.st_uid != 0
203
	   or exe_stat.st_gid != 0){
204
	  free(exe_link);
205
	  continue;
206
	}
207
	
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
208
	sret = readlink(exe_link, exe_target, sizeof(exe_target));
209
	free(exe_link);
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
210
	if(sret == -1){
211
	  continue;
212
	}
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
213
      }
214
      if((sret == ((ssize_t)sizeof(exe_target)-1))
215
	 and (memcmp(usplash_name, exe_target,
216
		     sizeof(exe_target)-1) == 0)){
217
	usplash_pid = pid;
218
	/* Read and save the command line of usplash in "cmdline" */
219
	{
220
	  /* Open /proc/<pid>/cmdline  */
221
	  int cl_fd;
222
	  {
223
	    char *cmdline_filename;
224
	    ret = asprintf(&cmdline_filename, "/proc/%s/cmdline",
225
			   proc_ent->d_name);
226
	    if(ret == -1){
227
	      perror("asprintf");
228
	      free(prompt);
229
	      closedir(proc_dir);
230
	      return EXIT_FAILURE;
231
	    }
232
	    cl_fd = open(cmdline_filename, O_RDONLY);
233
	    if(cl_fd == -1){
234
	      perror("open");
235
	      free(cmdline_filename);
236
	      free(prompt);
237
	      closedir(proc_dir);
238
	      return EXIT_FAILURE;
239
	    }
240
	    free(cmdline_filename);
241
	  }
242
	  size_t cmdline_allocated = 0;
243
	  char *tmp;
244
	  const size_t blocksize = 1024;
245
	  do{
246
	    if(cmdline_len + blocksize > cmdline_allocated){
247
	      tmp = realloc(cmdline, cmdline_allocated + blocksize);
248
	      if(tmp == NULL){
249
		perror("realloc");
250
		free(cmdline);
251
		free(prompt);
252
		closedir(proc_dir);
253
		return EXIT_FAILURE;
254
	      }
255
	      cmdline = tmp;
256
	      cmdline_allocated += blocksize;
257
	    }
258
	    sret = read(cl_fd, cmdline + cmdline_len,
259
			cmdline_allocated - cmdline_len);
260
	    if(sret == -1){
261
	      perror("read");
262
	      free(cmdline);
263
	      free(prompt);
264
	      closedir(proc_dir);
265
	      return EXIT_FAILURE;
266
	    }
267
	    cmdline_len += (size_t)sret;
268
	  } while(sret != 0);
269
	  close(cl_fd);
270
	}
271
	break;
272
      }
273
    }
274
    closedir(proc_dir);
275
  }
276
  if(usplash_pid == 0){
277
    free(prompt);
278
    return EXIT_FAILURE;
279
  }
280
  
281
  /* Set up the signal handler */
282
  {
283
    struct sigaction old_action,
284
      new_action = { .sa_handler = termination_handler,
285
		     .sa_flags = 0 };
286
    sigemptyset(&new_action.sa_mask);
287
    sigaddset(&new_action.sa_mask, SIGINT);
288
    sigaddset(&new_action.sa_mask, SIGHUP);
289
    sigaddset(&new_action.sa_mask, SIGTERM);
290
    ret = sigaction(SIGINT, NULL, &old_action);
291
    if(ret == -1){
292
      perror("sigaction");
293
      free(prompt);
294
      return EXIT_FAILURE;
295
    }
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
296
    if(old_action.sa_handler != SIG_IGN){
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
297
      ret = sigaction(SIGINT, &new_action, NULL);
298
      if(ret == -1){
299
	perror("sigaction");
300
	free(prompt);
301
	return EXIT_FAILURE;
302
      }
303
    }
304
    ret = sigaction(SIGHUP, NULL, &old_action);
305
    if(ret == -1){
306
      perror("sigaction");
307
      free(prompt);
308
      return EXIT_FAILURE;
309
    }
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
310
    if(old_action.sa_handler != SIG_IGN){
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
311
      ret = sigaction(SIGHUP, &new_action, NULL);
312
      if(ret == -1){
313
	perror("sigaction");
314
	free(prompt);
315
	return EXIT_FAILURE;
316
      }
317
    }
318
    ret = sigaction(SIGTERM, NULL, &old_action);
319
    if(ret == -1){
320
      perror("sigaction");
321
      free(prompt);
322
      return EXIT_FAILURE;
323
    }
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
324
    if(old_action.sa_handler != SIG_IGN){
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
325
      ret = sigaction(SIGTERM, &new_action, NULL);
326
      if(ret == -1){
327
	perror("sigaction");
328
	free(prompt);
329
	return EXIT_FAILURE;
330
      }
331
    }
332
  }
333
  
334
  /* Write command to FIFO */
335
  if(not interrupted_by_signal){
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
336
    if(not usplash_write("TIMEOUT", "0")
337
       and (errno != EINTR)){
338
      perror("usplash_write");
339
      an_error_occured = true;
340
    }
341
  }
342
  if(not interrupted_by_signal and not an_error_occured){
343
    if(not usplash_write("INPUTQUIET", prompt)
344
       and (errno != EINTR)){
345
      perror("usplash_write");
346
      an_error_occured = true;
347
    }
348
  }
349
  free(prompt);
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
350
  
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
351
  /* This is not really a loop; while() is used to be able to "break"
352
     out of it; those breaks are marked "Big" */
353
  while(not interrupted_by_signal and not an_error_occured){
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
354
    char *buf = NULL;
355
    size_t buf_len = 0;
356
    
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
357
    /* Open FIFO */
358
    int fifo_fd;
359
    do{
360
      fifo_fd = open("/dev/.initramfs/usplash_outfifo", O_RDONLY);
361
      if(fifo_fd == -1){
362
	if(errno != EINTR){
363
	  perror("open");
364
	  an_error_occured = true;
365
	  break;
366
	}
367
	if(interrupted_by_signal){
368
	  break;
369
	}
370
      }
371
    }while(fifo_fd == -1);
372
    if(interrupted_by_signal or an_error_occured){
373
      break;			/* Big */
374
    }
375
    
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
376
    /* Read from FIFO */
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
377
    size_t buf_allocated = 0;
378
    const size_t blocksize = 1024;
379
    do{
380
      if(buf_len + blocksize > buf_allocated){
381
	char *tmp = realloc(buf, buf_allocated + blocksize);
382
	if(tmp == NULL){
383
	  perror("realloc");
384
	  an_error_occured = true;
385
	  break;
386
	}
387
	buf = tmp;
388
	buf_allocated += blocksize;
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
389
      }
390
      do{
391
	sret = read(fifo_fd, buf + buf_len, buf_allocated - buf_len);
392
	if(sret == -1){
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
393
	  if(errno != EINTR){
394
	    perror("read");
395
	    an_error_occured = true;
396
	    break;
397
	  }
398
	  if(interrupted_by_signal){
399
	    break;
400
	  }
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
401
	}
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
402
      }while(sret == -1);
403
      if(interrupted_by_signal or an_error_occured){
404
	break;
405
      }
406
      
407
      buf_len += (size_t)sret;
408
    }while(sret != 0);
409
    close(fifo_fd);
410
    if(interrupted_by_signal or an_error_occured){
411
      break;			/* Big */
412
    }
413
    
414
    if(not usplash_write("TIMEOUT", "15")
415
       and (errno != EINTR)){
416
	perror("usplash_write");
417
	an_error_occured = true;
418
    }
419
    if(interrupted_by_signal or an_error_occured){
420
      break;			/* Big */
421
    }
422
    
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
423
    /* Print password to stdout */
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
424
    size_t written = 0;
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
425
    while(written < buf_len){
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
426
      do{
427
	sret = write(STDOUT_FILENO, buf + written, buf_len - written);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
428
	if(sret == -1){
429
	  if(errno != EINTR){
430
	    perror("write");
431
	    an_error_occured = true;
432
	    break;
433
	  }
434
	  if(interrupted_by_signal){
435
	    break;
436
	  }
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
437
	}
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
438
      }while(sret == -1);
439
      if(interrupted_by_signal or an_error_occured){
440
	break;
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
441
      }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
442
      written += (size_t)sret;
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
443
    }
444
    free(buf);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
445
    if(not interrupted_by_signal and not an_error_occured){
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
446
      free(cmdline);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
447
      return EXIT_SUCCESS;
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
448
    }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
449
    break;			/* Big */
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
450
  }				/* end of non-loop while() */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
451
  
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
452
  /* If we got here, an error or interrupt must have happened */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
453
  
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
454
  /* Create argc and argv for new usplash*/
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
455
  int cmdline_argc = 0;
456
  char **cmdline_argv = malloc(sizeof(char *));
457
  {
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
458
    size_t position = 0;
459
    while(position < cmdline_len){
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
460
      char **tmp = realloc(cmdline_argv,
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
461
			   (sizeof(char *)
462
			    * (size_t)(cmdline_argc + 2)));
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
463
      if(tmp == NULL){
464
	perror("realloc");
465
	free(cmdline_argv);
466
	return EXIT_FAILURE;
467
      }
468
      cmdline_argv = tmp;
469
      cmdline_argv[cmdline_argc] = cmdline + position;
470
      cmdline_argc++;
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
471
      position += strlen(cmdline + position) + 1;
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
472
    }
473
    cmdline_argv[cmdline_argc] = NULL;
474
  }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
475
  /* Kill old usplash */
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
476
  kill(usplash_pid, SIGTERM);
477
  sleep(2);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
478
  while(kill(usplash_pid, 0) == 0){
479
    kill(usplash_pid, SIGKILL);
480
    sleep(1);
481
  }
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
482
  pid_t new_usplash_pid = fork();
483
  if(new_usplash_pid == 0){
484
    /* Child; will become new usplash process */
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
485
    
486
    /* Make the effective user ID (root) the only user ID instead of
487
       the real user ID (mandos) */
488
    ret = setuid(geteuid());
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
489
    if(ret == -1){
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
490
      perror("setuid");
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
491
    }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
492
    
493
    setsid();
494
    ret = chdir("/");
495
/*     if(fork() != 0){ */
496
/*       _exit(EXIT_SUCCESS); */
497
/*     } */
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
498
    ret = dup2(STDERR_FILENO, STDOUT_FILENO); /* replace our stdout */
499
    if(ret == -1){
500
      perror("dup2");
501
      _exit(EXIT_FAILURE);
502
    }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
503
    
504
    execv(usplash_name, cmdline_argv);
223 by Teddy Hogeborn
* .bzrignore (plugins.d/askpass-fifo): Added.
505
    if(not interrupted_by_signal){
506
      perror("execv");
507
    }
213 by Teddy Hogeborn
* plugins.d/usplash.c (main): Bug fix: Do not free "cmdline" too soon.
508
    free(cmdline);
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
509
    free(cmdline_argv);
510
    _exit(EXIT_FAILURE);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
511
  }
213 by Teddy Hogeborn
* plugins.d/usplash.c (main): Bug fix: Do not free "cmdline" too soon.
512
  free(cmdline);
212 by Teddy Hogeborn
* plugins.d/usplash.c (usplash_write): Move "cmd_line_len" up.
513
  free(cmdline_argv);
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
514
  sleep(2);
515
  if(not usplash_write("PULSATE", NULL)
516
     and (errno != EINTR)){
517
    perror("usplash_write");
208 by Teddy Hogeborn
* Makefile (PLUGINS): Added "plugins.d/usplash".
518
  }
519
  
520
  return EXIT_FAILURE;
521
}