/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1
/*  -*- coding: utf-8 -*- */
2
/*
3
 * Mandos plugin runner - Run Mandos plugins
4
 *
28 by Teddy Hogeborn
* server.conf: New file.
5
 * Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
6
 * 
7
 * This program is free software: you can redistribute it and/or
8
 * modify it under the terms of the GNU General Public License as
9
 * published by the Free Software Foundation, either version 3 of the
10
 * License, or (at your option) any later version.
11
 * 
12
 * This program is distributed in the hope that it will be useful, but
13
 * WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * General Public License for more details.
16
 * 
17
 * You should have received a copy of the GNU General Public License
18
 * along with this program.  If not, see
19
 * <http://www.gnu.org/licenses/>.
20
 * 
28 by Teddy Hogeborn
* server.conf: New file.
21
 * Contact the authors at <mandos@fukt.bsnet.se>.
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
22
 */
23
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
24
#define _GNU_SOURCE		/* TEMP_FAILURE_RETRY() */
25
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
26
#include <stdio.h>		/* popen(), fileno(), fprintf(),
27
				   stderr, STDOUT_FILENO */
28
#include <iso646.h>		/* and, or, not */
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
29
#include <sys/types.h>	        /* DIR, opendir(), stat(),
30
				   struct stat, waitpid(),
31
				   WIFEXITED(), WEXITSTATUS(),
32
				   wait() */
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
33
#include <sys/wait.h>		/* wait() */
34
#include <dirent.h>		/* DIR, struct dirent, opendir(),
35
				   readdir(), closedir() */
36
#include <sys/stat.h>		/* struct stat, stat(), S_ISREG() */
37
#include <unistd.h>		/* struct stat, stat(), S_ISREG(),
38
				   fcntl() */
39
#include <fcntl.h>		/* fcntl() */
40
#include <stddef.h>		/* NULL */
41
#include <stdlib.h>		/* EXIT_FAILURE */
42
#include <sys/select.h>		/* fd_set, select(), FD_ZERO(),
43
				   FD_SET(), FD_ISSET() */
44
#include <string.h>		/* strlen(), strcpy(), strcat() */
45
#include <stdbool.h>		/* true */
46
#include <sys/wait.h>		/* waitpid(), WIFEXITED(),
47
				   WEXITSTATUS() */
48
#include <errno.h>		/* errno */
49
#include <argp.h>		/* struct argp_option,
50
				   struct argp_state, struct argp,
51
				   argp_parse() */
13 by Björn Påhlsson
Added following support:
52
53
struct process;
54
55
typedef struct process{
56
  pid_t pid;
57
  int fd;
58
  char *buffer;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
59
  size_t buffer_size;
60
  size_t buffer_length;
13 by Björn Påhlsson
Added following support:
61
  struct process *next;
62
} process;
63
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
64
typedef struct plugin{
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
65
  char *name;			/* can be NULL or any plugin name */
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
66
  char **argv;
67
  int argc;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
68
  bool disabled;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
69
  struct plugin *next;
70
} plugin;
71
72
plugin *getplugin(char *name, plugin **plugin_list){
73
  for (plugin *p = *plugin_list; p != NULL; p = p->next){
74
    if ((p->name == name)
75
	or (p->name and name and (strcmp(p->name, name) == 0))){
76
      return p;
77
    }
78
  }
79
  /* Create a new plugin */
80
  plugin *new_plugin = malloc(sizeof(plugin));
81
  if (new_plugin == NULL){
82
    perror("malloc");
83
    exit(EXIT_FAILURE);
84
  }
85
  new_plugin->name = name;
86
  new_plugin->argv = malloc(sizeof(char *) * 2);
87
  if (new_plugin->argv == NULL){
88
    perror("malloc");
89
    exit(EXIT_FAILURE);
90
  }
91
  new_plugin->argv[0] = name;
92
  new_plugin->argv[1] = NULL;
93
  new_plugin->argc = 1;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
94
  new_plugin->disabled = false;
24.1.5 by Björn Påhlsson
plugbasedclient:
95
  new_plugin->next = *plugin_list;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
96
  /* Append the new plugin to the list */
97
  *plugin_list = new_plugin;
98
  return new_plugin;
99
}
100
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
101
void addargument(plugin *p, char *arg){
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
102
  p->argv[p->argc] = arg;
103
  p->argv = realloc(p->argv, sizeof(char *) * (size_t)(p->argc + 2));
104
  if (p->argv == NULL){
105
    perror("malloc");
106
    exit(EXIT_FAILURE);
107
  }
108
  p->argc++;
109
  p->argv[p->argc] = NULL;
110
}
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
111
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
112
/*
113
 * Based on the example in the GNU LibC manual chapter 13.13 "File
114
 * Descriptor Flags".
115
 * *Note File Descriptor Flags:(libc)Descriptor Flags.
116
 */
117
int set_cloexec_flag(int fd)
118
{
119
  int ret = fcntl(fd, F_GETFD, 0);
120
  /* If reading the flags failed, return error indication now. */
121
  if(ret < 0){
122
    return ret;
123
  }
124
  /* Store modified flag word in the descriptor. */
125
  return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
126
}
127
128
13 by Björn Påhlsson
Added following support:
129
#define BUFFER_SIZE 256
130
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
131
const char *argp_program_version =
132
  "plugbasedclient 0.9";
133
const char *argp_program_bug_address =
134
  "<mandos@fukt.bsnet.se>";
135
13 by Björn Påhlsson
Added following support:
136
int main(int argc, char *argv[]){
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
137
  const char *plugindir = "/conf/conf.d/mandos/plugins.d";
24.1.5 by Björn Påhlsson
plugbasedclient:
138
  size_t d_name_len;
13 by Björn Påhlsson
Added following support:
139
  DIR *dir;
140
  struct dirent *dirst;
141
  struct stat st;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
142
  fd_set rfds_all;
13 by Björn Påhlsson
Added following support:
143
  int ret, maxfd = 0;
144
  process *process_list = NULL;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
145
  bool debug = false;
146
  int exitstatus = EXIT_SUCCESS;
147
  
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
148
  /* The options we understand. */
149
  struct argp_option options[] = {
150
    { .name = "global-options", .key = 'g',
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
151
      .arg = "OPTION[,OPTION[,...]]",
152
      .doc = "Options passed to all plugins" },
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
153
    { .name = "options-for", .key = 'o',
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
154
      .arg = "PLUGIN:OPTION[,OPTION[,...]]",
155
      .doc = "Options passed only to specified plugin" },
156
    { .name = "disable", .key = 'd',
157
      .arg = "PLUGIN",
158
      .doc = "Disable a specific plugin", .group = 1 },
24.1.5 by Björn Påhlsson
plugbasedclient:
159
    { .name = "plugin-dir", .key = 128,
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
160
      .arg = "DIRECTORY",
161
      .doc = "Specify a different plugin directory", .group = 2 },
162
    { .name = "debug", .key = 129,
163
      .doc = "Debug mode", .group = 3 },
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
164
    { .name = NULL }
165
  };
166
  
167
  error_t parse_opt (int key, char *arg, struct argp_state *state) {
168
       /* Get the INPUT argument from `argp_parse', which we
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
169
          know is a pointer to our plugin list pointer. */
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
170
    plugin **plugins = state->input;
171
    switch (key) {
172
    case 'g':
173
      if (arg != NULL){
174
	char *p = strtok(arg, ",");
175
	do{
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
176
	  addargument(getplugin(NULL, plugins), p);
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
177
	  p = strtok(NULL, ",");
178
	} while (p);
179
      }
180
      break;
181
    case 'o':
182
      if (arg != NULL){
183
	char *name = strtok(arg, ":");
184
	char *p = strtok(NULL, ":");
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
185
	if(p){
186
	  p = strtok(p, ",");
187
	  do{
188
	    addargument(getplugin(name, plugins), p);
189
	    p = strtok(NULL, ",");
190
	  } while (p);
191
	}
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
192
      }
193
      break;
24.1.5 by Björn Påhlsson
plugbasedclient:
194
    case 'd':
195
      if (arg != NULL){
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
196
	getplugin(arg, plugins)->disabled = true;
24.1.5 by Björn Påhlsson
plugbasedclient:
197
      }
198
      break;
199
    case 128:
200
      plugindir = arg;
201
      break;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
202
    case 129:
203
      debug = true;
204
      break;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
205
    case ARGP_KEY_ARG:
206
      argp_usage (state);
207
      break;
208
    case ARGP_KEY_END:
209
      break;
210
    default:
211
      return ARGP_ERR_UNKNOWN;
212
    }
213
    return 0;
214
  }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
215
  
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
216
  plugin *plugin_list = NULL;
217
  
218
  struct argp argp = { .options = options, .parser = parse_opt,
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
219
		       .args_doc = "",
220
		       .doc = "Mandos plugin runner -- Run plugins" };
221
  
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
222
  argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
223
  
224
  if(debug){
225
    for(plugin *p = plugin_list; p != NULL; p=p->next){
226
      fprintf(stderr, "Plugin: %s has %d arguments\n",
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
227
	      p->name ? p->name : "Global", p->argc - 1);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
228
      for(char **a = p->argv; *a != NULL; a++){
229
	fprintf(stderr, "\tArg: %s\n", *a);
230
      }
231
    }
232
  }
233
  
13 by Björn Påhlsson
Added following support:
234
  dir = opendir(plugindir);
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
235
  if(dir == NULL){
236
    perror("Could not open plugin dir");
237
    exitstatus = EXIT_FAILURE;
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
238
    goto end;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
239
  }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
240
  /* Set the FD_CLOEXEC flag on the directory, if possible */
241
  {
242
    int dir_fd = dirfd(dir);
243
    if(dir_fd >= 0){
244
      ret = set_cloexec_flag(dir_fd);
245
      if(ret < 0){
246
	perror("set_cloexec_flag");
247
	exitstatus = EXIT_FAILURE;
248
	goto end;
249
      }
250
    }
251
  }
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
252
  
13 by Björn Påhlsson
Added following support:
253
  if(dir == NULL){
254
    fprintf(stderr, "Can not open directory\n");
255
    return EXIT_FAILURE;
256
  }
257
  
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
258
  FD_ZERO(&rfds_all);
13 by Björn Påhlsson
Added following support:
259
  
260
  while(true){
261
    dirst = readdir(dir);
262
    
263
    // All directory entries have been processed
264
    if(dirst == NULL){
265
      break;
266
    }
267
    
268
    d_name_len = strlen(dirst->d_name);
269
    
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
270
    // Ignore dotfiles, backup files and other junk
271
    {
272
      bool bad_name = false;
273
      
274
      const char const *bad_prefixes[] = { ".", "#", NULL };
275
      
276
      const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
277
					   ".dpkg-old",
278
					   ".dpkg-divert", NULL };
279
      for(const char **pre = bad_prefixes; *pre != NULL; pre++){
280
	size_t pre_len = strlen(*pre);
281
	if((d_name_len >= pre_len)
282
	   and strncmp((dirst->d_name), *pre, pre_len) == 0){
283
	  if(debug){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
284
	    fprintf(stderr, "Ignoring plugin dir entry \"%s\""
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
285
		    " with bad prefix %s\n", dirst->d_name, *pre);
286
	  }
287
	  bad_name = true;
288
	  break;
289
	}
290
      }
291
      
292
      if(bad_name){
293
	continue;
294
      }
295
      
296
      for(const char **suf = bad_suffixes; *suf != NULL; suf++){
297
	size_t suf_len = strlen(*suf);
298
	if((d_name_len >= suf_len)
299
	   and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
300
		== 0)){
301
	  if(debug){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
302
	    fprintf(stderr, "Ignoring plugin dir entry \"%s\""
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
303
		    " with bad suffix %s\n", dirst->d_name, *suf);
304
	  }
305
	  bad_name = true;
306
	  break;
307
	}
308
      }
309
      
310
      if(bad_name){
311
	continue;
312
      }
13 by Björn Påhlsson
Added following support:
313
    }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
314
    
24.1.5 by Björn Påhlsson
plugbasedclient:
315
    char *filename = malloc(d_name_len + strlen(plugindir) + 2);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
316
    if (filename == NULL){
317
      perror("malloc");
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
318
      exitstatus = EXIT_FAILURE;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
319
      goto end;
320
    }
13 by Björn Påhlsson
Added following support:
321
    strcpy(filename, plugindir);
322
    strcat(filename, "/");
323
    strcat(filename, dirst->d_name);    
14 by Björn Påhlsson
Fixed a overbufferflow bug, thanks to a forgotten \0
324
13 by Björn Påhlsson
Added following support:
325
    stat(filename, &st);
326
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
327
    if (not S_ISREG(st.st_mode)	or (access(filename, X_OK) != 0)){
328
      if(debug){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
329
	fprintf(stderr, "Ignoring plugin dir entry \"%s\""
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
330
		" with bad type or mode\n", filename);
331
      }
332
      continue;
333
    }
334
    if(getplugin(dirst->d_name, &plugin_list)->disabled){
335
      if(debug){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
336
	fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
337
		dirst->d_name);
338
      }
339
      continue;
340
    }
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
341
    plugin *p = getplugin(dirst->d_name, &plugin_list);
342
    {
343
      /* Add global arguments to argument list for this plugin */
344
      plugin *g = getplugin(NULL, &plugin_list);
345
      for(char **a = g->argv + 1; *a != NULL; a++){
346
	addargument(p, *a);
347
      }
348
    }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
349
    int pipefd[2]; 
350
    ret = pipe(pipefd);
351
    if (ret == -1){
352
      perror("pipe");
353
      exitstatus = EXIT_FAILURE;
354
      goto end;
355
    }
356
    ret = set_cloexec_flag(pipefd[0]);
357
    if(ret < 0){
358
      perror("set_cloexec_flag");
359
      exitstatus = EXIT_FAILURE;
360
      goto end;
361
    }
362
    ret = set_cloexec_flag(pipefd[1]);
363
    if(ret < 0){
364
      perror("set_cloexec_flag");
365
      exitstatus = EXIT_FAILURE;
366
      goto end;
367
    }
368
    // Starting a new process to be watched
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
369
    pid_t pid = fork();
370
    if(pid == 0){
371
      /* this is the child process */
372
      dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
373
      
374
      if(dirfd(dir) < 0){
375
	/* If dir has no file descriptor, we could not set FD_CLOEXEC
376
	   and must close it manually  */
377
	closedir(dir);
33 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (main): Close the pipe fd after dup2:ing
378
      }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
379
      if(execv(filename, p->argv) < 0){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
380
	perror("execv");
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
381
	_exit(EXIT_FAILURE);
382
      }
383
      /* no return */
384
    }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
385
    /* parent process */
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
386
    close(pipefd[1]);		/* close unused write end of pipe */
387
    process *new_process = malloc(sizeof(process));
388
    if (new_process == NULL){
389
      perror("malloc");
390
      exitstatus = EXIT_FAILURE;
391
      goto end;
392
    }
393
    
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
394
    *new_process = (struct process){ .pid = pid,
395
				     .fd = pipefd[0],
396
				     .next = process_list };
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
397
    FD_SET(new_process->fd, &rfds_all);
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
398
    
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
399
    if (maxfd < new_process->fd){
400
      maxfd = new_process->fd;
401
    }
402
    
403
    //List handling
404
    process_list = new_process;
13 by Björn Påhlsson
Added following support:
405
  }
406
  
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
407
  /* Free the plugin list */
408
  for(plugin *next; plugin_list != NULL; plugin_list = next){
409
    next = plugin_list->next;
410
    free(plugin_list->argv);
411
    free(plugin_list);
412
  }
413
  
13 by Björn Påhlsson
Added following support:
414
  closedir(dir);
415
  
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
416
  if (process_list == NULL){
417
    fprintf(stderr, "No plugin processes started, exiting\n");
418
    return EXIT_FAILURE;
419
  }
420
  while(true){
421
    fd_set rfds = rfds_all;
422
    int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
423
    if (select_ret == -1){
424
      perror("select");
425
      exitstatus = EXIT_FAILURE;
426
      goto end;
427
    }
428
    for(process *proc = process_list; proc ; proc = proc->next){
429
      if(not FD_ISSET(proc->fd, &rfds)){
430
	continue;
431
      }
432
      if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
433
	proc->buffer = realloc(proc->buffer, proc->buffer_size
434
			       + (size_t) BUFFER_SIZE);
435
	if (proc->buffer == NULL){
436
	  perror("malloc");
437
	  exitstatus = EXIT_FAILURE;
438
	  goto end;
439
	}
440
	proc->buffer_size += BUFFER_SIZE;
441
      }
442
      ret = read(proc->fd, proc->buffer + proc->buffer_length,
443
		 BUFFER_SIZE);
444
      if(ret < 0){
445
	/* Read error from this process; ignore it */
446
	continue;
447
      }
448
      proc->buffer_length += (size_t) ret;
449
      if(ret == 0){
450
	/* got EOF */
451
	/* wait for process exit */
452
	int status;
453
	waitpid(proc->pid, &status, 0);
454
	if(not WIFEXITED(status) or WEXITSTATUS(status) != 0){
455
	  FD_CLR(proc->fd, &rfds_all);
456
	  continue;
457
	}
458
	for(size_t written = 0;
459
	    written < proc->buffer_length; written += (size_t)ret){
460
	  ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO,
461
					 proc->buffer + written,
462
					 proc->buffer_length
463
					 - written));
464
	  if(ret < 0){
465
	    perror("write");
466
	    exitstatus = EXIT_FAILURE;
467
	    goto end;
468
	  }
469
	}
13 by Björn Påhlsson
Added following support:
470
	goto end;
471
      }
472
    }
473
  }
474
  
475
 end:
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
476
  for(process *next; process_list != NULL; process_list = next){
477
    close(process_list->fd);
478
    kill(process_list->pid, SIGTERM);
479
    free(process_list->buffer);
480
    free(process_list);
13 by Björn Påhlsson
Added following support:
481
  }
482
  
483
  while(true){
484
    int status;
485
    ret = wait(&status);
486
    if (ret == -1){
487
      if(errno != ECHILD){
488
	perror("wait");
489
      }
490
      break;
491
    }
492
  }  
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
493
  return exitstatus;
13 by Björn Påhlsson
Added following support:
494
}