/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
237.2.122 by Teddy Hogeborn
* plugins-runner.c (main): Bug fix: Close config file.
1
/*  -*- coding: utf-8; mode: c; mode: orgtbl -*- */
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
2
/*
3
 * Mandos plugin runner - Run Mandos plugins
4
 *
237.7.471 by Teddy Hogeborn
Update copyright year to 2018
5
 * Copyright © 2008-2018 Teddy Hogeborn
6
 * Copyright © 2008-2018 Björn Påhlsson
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
7
 * 
237.7.455 by Teddy Hogeborn
Alter copyright notices slightly. Actual license is unchanged!
8
 * This file is part of Mandos.
9
 * 
10
 * Mandos is free software: you can redistribute it and/or modify it
11
 * under the terms of the GNU General Public License as published by
12
 * the Free Software Foundation, either version 3 of the License, or
13
 * (at your option) any later version.
14
 * 
15
 * Mandos is distributed in the hope that it will be useful, but
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
16
 * WITHOUT ANY WARRANTY; without even the implied warranty of
17
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18
 * General Public License for more details.
19
 * 
20
 * You should have received a copy of the GNU General Public License
237.7.455 by Teddy Hogeborn
Alter copyright notices slightly. Actual license is unchanged!
21
 * along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
22
 * 
237.11.2 by Teddy Hogeborn
Change "fukt.bsnet.se" to "recompile.se" throughout.
23
 * Contact the authors at <mandos@recompile.se>.
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
24
 */
25
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
26
#define _GNU_SOURCE		/* TEMP_FAILURE_RETRY(), getline(),
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
27
				   O_CLOEXEC, pipe2() */
24.1.26 by Björn Påhlsson
tally count of used symbols
28
#include <stddef.h>		/* size_t, NULL */
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
29
#include <stdlib.h>		/* malloc(), exit(), EXIT_SUCCESS,
30
				   realloc() */
24.1.26 by Björn Påhlsson
tally count of used symbols
31
#include <stdbool.h>		/* bool, true, false */
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
32
#include <stdio.h>		/* fileno(), fprintf(),
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
33
				   stderr, STDOUT_FILENO, fclose() */
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
34
#include <sys/types.h>	        /* fstat(), struct stat, waitpid(),
35
				   WIFEXITED(), WEXITSTATUS(), wait(),
36
				   pid_t, uid_t, gid_t, getuid(),
37
				   getgid() */
24.1.26 by Björn Påhlsson
tally count of used symbols
38
#include <sys/select.h>		/* fd_set, select(), FD_ZERO(),
39
				   FD_SET(), FD_ISSET(), FD_CLR */
40
#include <sys/wait.h>		/* wait(), waitpid(), WIFEXITED(),
237.7.382 by Teddy Hogeborn
Client: Remove dead code in plugin-runner
41
				   WEXITSTATUS(), WTERMSIG() */
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
42
#include <sys/stat.h>		/* struct stat, fstat(), S_ISREG() */
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
43
#include <iso646.h>		/* and, or, not */
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
44
#include <dirent.h>		/* struct dirent, scandirat() */
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
45
#include <unistd.h>		/* fcntl(), F_GETFD, F_SETFD,
46
				   FD_CLOEXEC, write(), STDOUT_FILENO,
47
				   struct stat, fstat(), close(),
48
				   setgid(), setuid(), S_ISREG(),
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
49
				   faccessat() pipe2(), fork(),
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
50
				   _exit(), dup2(), fexecve(), read()
51
				*/
24.1.26 by Björn Påhlsson
tally count of used symbols
52
#include <fcntl.h>		/* fcntl(), F_GETFD, F_SETFD,
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
53
				   FD_CLOEXEC, openat(), scandirat(),
54
				   pipe2() */
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
55
#include <string.h>		/* strsep, strlen(), strsignal(),
56
				   strcmp(), strncmp() */
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
57
#include <errno.h>		/* errno */
24.1.26 by Björn Påhlsson
tally count of used symbols
58
#include <argp.h>		/* struct argp_option, struct
59
				   argp_state, struct argp,
60
				   argp_parse(), ARGP_ERR_UNKNOWN,
102 by Teddy Hogeborn
* plugin-runner.c (process): Set "completed" and "status" as volatile.
61
				   ARGP_KEY_END, ARGP_KEY_ARG,
62
				   error_t */
24.1.26 by Björn Påhlsson
tally count of used symbols
63
#include <signal.h> 		/* struct sigaction, sigemptyset(),
64
				   sigaddset(), sigaction(),
65
				   sigprocmask(), SIG_BLOCK, SIGCHLD,
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
66
				   SIG_UNBLOCK, kill(), sig_atomic_t
67
				*/
24.1.26 by Björn Påhlsson
tally count of used symbols
68
#include <errno.h>		/* errno, EBADF */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
69
#include <inttypes.h>		/* intmax_t, PRIdMAX, strtoimax() */
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
70
#include <sysexits.h>		/* EX_OSERR, EX_USAGE, EX_IOERR,
71
				   EX_CONFIG, EX_UNAVAILABLE, EX_OK */
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
72
#include <errno.h> 		/* errno */
73
#include <error.h>		/* error() */
237.7.224 by Teddy Hogeborn
Use fnmatch()in plugin-runner.
74
#include <fnmatch.h>		/* fnmatch() */
13 by Björn Påhlsson
Added following support:
75
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
76
#define BUFFER_SIZE 256
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
77
78
#define PDIR "/lib/mandos/plugins.d"
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
79
#define PHDIR "/lib/mandos/plugin-helpers"
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
80
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
81
217 by Teddy Hogeborn
* .bzrignore: Added "man" directory (created by "make install-html").
82
const char *argp_program_version = "plugin-runner " VERSION;
237.11.2 by Teddy Hogeborn
Change "fukt.bsnet.se" to "recompile.se" throughout.
83
const char *argp_program_bug_address = "<mandos@recompile.se>";
24.1.35 by Björn Påhlsson
version 1.0
84
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
85
typedef struct plugin{
86
  char *name;			/* can be NULL or any plugin name */
87
  char **argv;
88
  int argc;
89
  char **environ;
90
  int envc;
91
  bool disabled;
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
92
  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
93
  /* Variables used for running processes*/
13 by Björn Påhlsson
Added following support:
94
  pid_t pid;
95
  int fd;
96
  char *buffer;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
97
  size_t buffer_size;
98
  size_t buffer_length;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
99
  bool eof;
237.2.59 by Teddy Hogeborn
* plugin-runner.c (struct plugin.completed): Changed type to "volatile
100
  volatile sig_atomic_t completed;
237.2.60 by Teddy Hogeborn
* plugin-runner.c (struct plugin.status): Changed type to "int".
101
  int status;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
102
  struct plugin *next;
103
} plugin;
104
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
105
static plugin *plugin_list = NULL;
106
24.1.90 by Björn Påhlsson
fixed two bugs:
107
/* Gets an existing plugin based on name,
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
108
   or if none is found, creates a new one */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
109
__attribute__((warn_unused_result))
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
110
static plugin *getplugin(char *name){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
111
  /* Check for existing plugin with that name */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
112
  for(plugin *p = plugin_list; p != NULL; p = p->next){
113
    if((p->name == name)
114
       or (p->name and name and (strcmp(p->name, name) == 0))){
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
115
      return p;
116
    }
117
  }
118
  /* Create a new plugin */
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
119
  plugin *new_plugin = NULL;
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
120
  do {
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
121
    new_plugin = malloc(sizeof(plugin));
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
122
  } while(new_plugin == NULL and errno == EINTR);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
123
  if(new_plugin == NULL){
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
124
    return NULL;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
125
  }
24.1.62 by Björn Påhlsson
merge + small bugfix
126
  char *copy_name = NULL;
127
  if(name != NULL){
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
128
    do {
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
129
      copy_name = strdup(name);
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
130
    } while(copy_name == NULL and errno == EINTR);
98 by Teddy Hogeborn
* plugin-runner.c (getplugin): Only copy "name" if not NULL. Free
131
    if(copy_name == NULL){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
132
      int e = errno;
237.2.35 by Teddy Hogeborn
Fix problem found using cppcheck, thanks to George Danchev
133
      free(new_plugin);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
134
      errno = e;
98 by Teddy Hogeborn
* plugin-runner.c (getplugin): Only copy "name" if not NULL. Free
135
      return NULL;
136
    }
24.1.54 by Björn Påhlsson
plugin-runner
137
  }
24.1.90 by Björn Påhlsson
fixed two bugs:
138
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
139
  *new_plugin = (plugin){ .name = copy_name,
140
			  .argc = 1,
141
			  .disabled = false,
142
			  .next = plugin_list };
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
143
  
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
144
  do {
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
145
    new_plugin->argv = malloc(sizeof(char *) * 2);
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
146
  } while(new_plugin->argv == NULL and errno == EINTR);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
147
  if(new_plugin->argv == NULL){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
148
    int e = errno;
24.1.62 by Björn Påhlsson
merge + small bugfix
149
    free(copy_name);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
150
    free(new_plugin);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
151
    errno = e;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
152
    return NULL;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
153
  }
24.1.54 by Björn Påhlsson
plugin-runner
154
  new_plugin->argv[0] = copy_name;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
155
  new_plugin->argv[1] = NULL;
135 by Teddy Hogeborn
* plugin-runner.c (add_environment): Never insert existing environment
156
  
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
157
  do {
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
158
    new_plugin->environ = malloc(sizeof(char *));
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
159
  } while(new_plugin->environ == NULL and errno == EINTR);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
160
  if(new_plugin->environ == NULL){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
161
    int e = errno;
24.1.62 by Björn Påhlsson
merge + small bugfix
162
    free(copy_name);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
163
    free(new_plugin->argv);
164
    free(new_plugin);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
165
    errno = e;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
166
    return NULL;
167
  }
168
  new_plugin->environ[0] = NULL;
135 by Teddy Hogeborn
* plugin-runner.c (add_environment): Never insert existing environment
169
  
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
170
  /* Append the new plugin to the list */
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
171
  plugin_list = new_plugin;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
172
  return new_plugin;
173
}
174
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
175
/* Helper function for add_argument and add_environment */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
176
__attribute__((nonnull, warn_unused_result))
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
177
static bool add_to_char_array(const char *new, char ***array,
178
			      int *len){
179
  /* Resize the pointed-to array to hold one more pointer */
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
180
  char **new_array = NULL;
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
181
  do {
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
182
    new_array = realloc(*array, sizeof(char *)
183
			* (size_t) ((*len) + 2));
184
  } while(new_array == NULL and errno == EINTR);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
185
  /* Malloc check */
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
186
  if(new_array == NULL){
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
187
    return false;
188
  }
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
189
  *array = new_array;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
190
  /* Make a copy of the new string */
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
191
  char *copy;
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
192
  do {
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
193
    copy = strdup(new);
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
194
  } while(copy == NULL and errno == EINTR);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
195
  if(copy == NULL){
196
    return false;
197
  }
198
  /* Insert the copy */
199
  (*array)[*len] = copy;
200
  (*len)++;
201
  /* Add a new terminating NULL pointer to the last element */
202
  (*array)[*len] = NULL;
203
  return true;
204
}
205
206
/* Add to a plugin's argument vector */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
207
__attribute__((nonnull(2), warn_unused_result))
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
208
static bool add_argument(plugin *p, const char *arg){
209
  if(p == NULL){
210
    return false;
211
  }
212
  return add_to_char_array(arg, &(p->argv), &(p->argc));
213
}
214
215
/* Add to a plugin's environment */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
216
__attribute__((nonnull(2), warn_unused_result))
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
217
static bool add_environment(plugin *p, const char *def, bool replace){
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
218
  if(p == NULL){
219
    return false;
220
  }
135 by Teddy Hogeborn
* plugin-runner.c (add_environment): Never insert existing environment
221
  /* namelen = length of name of environment variable */
222
  size_t namelen = (size_t)(strchrnul(def, '=') - def);
223
  /* Search for this environment variable */
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
224
  for(char **envdef = p->environ; *envdef != NULL; envdef++){
225
    if(strncmp(*envdef, def, namelen + 1) == 0){
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
226
      /* It already exists */
227
      if(replace){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
228
	char *new_envdef;
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
229
	do {
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
230
	  new_envdef = realloc(*envdef, strlen(def) + 1);
231
	} while(new_envdef == NULL and errno == EINTR);
232
	if(new_envdef == NULL){
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
233
	  return false;
234
	}
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
235
	*envdef = new_envdef;
236
	strcpy(*envdef, def);
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
237
      }
135 by Teddy Hogeborn
* plugin-runner.c (add_environment): Never insert existing environment
238
      return true;
239
    }
240
  }
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
241
  return add_to_char_array(def, &(p->environ), &(p->envc));
242
}
243
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
244
#ifndef O_CLOEXEC
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
245
/*
246
 * Based on the example in the GNU LibC manual chapter 13.13 "File
247
 * Descriptor Flags".
237.2.122 by Teddy Hogeborn
* plugins-runner.c (main): Bug fix: Close config file.
248
 | [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
249
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
250
__attribute__((warn_unused_result))
187 by Teddy Hogeborn
* debian/mandos-client.README.Debian: Document "eth0" default and how
251
static int set_cloexec_flag(int fd){
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
252
  int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
253
  /* If reading the flags failed, return error indication now. */
254
  if(ret < 0){
255
    return ret;
256
  }
257
  /* Store modified flag word in the descriptor. */
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
258
  return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
259
				       ret | FD_CLOEXEC));
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
260
}
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
261
#endif	/* not O_CLOEXEC */
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
262
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
263
102 by Teddy Hogeborn
* plugin-runner.c (process): Set "completed" and "status" as volatile.
264
/* Mark processes as completed when they exit, and save their exit
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
265
   status. */
187 by Teddy Hogeborn
* debian/mandos-client.README.Debian: Document "eth0" default and how
266
static void handle_sigchld(__attribute__((unused)) int sig){
237.2.61 by Teddy Hogeborn
* plugin-runner.c (handle_sigchld): Bug fix: Save and restore "errno".
267
  int old_errno = errno;
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
268
  while(true){
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
269
    plugin *proc = plugin_list;
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
270
    int status;
271
    pid_t pid = waitpid(-1, &status, WNOHANG);
272
    if(pid == 0){
102 by Teddy Hogeborn
* plugin-runner.c (process): Set "completed" and "status" as volatile.
273
      /* Only still running child processes */
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
274
      break;
275
    }
276
    if(pid == -1){
237.2.58 by Teddy Hogeborn
* plugin-runner.c (handle_sigchld): Clarify logic.
277
      if(errno == ECHILD){
278
	/* No child processes */
279
	break;
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
280
      }
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
281
      error(0, errno, "waitpid");
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
282
    }
24.1.90 by Björn Påhlsson
fixed two bugs:
283
    
102 by Teddy Hogeborn
* plugin-runner.c (process): Set "completed" and "status" as volatile.
284
    /* A child exited, find it in process_list */
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
285
    while(proc != NULL and proc->pid != pid){
286
      proc = proc->next;
287
    }
288
    if(proc == NULL){
289
      /* Process not found in process list */
290
      continue;
291
    }
292
    proc->status = status;
237.2.59 by Teddy Hogeborn
* plugin-runner.c (struct plugin.completed): Changed type to "volatile
293
    proc->completed = 1;
24.1.65 by Björn Påhlsson
* plugin-runner.c (handle_sigchld): Loop until all exited children
294
  }
237.2.61 by Teddy Hogeborn
* plugin-runner.c (handle_sigchld): Bug fix: Save and restore "errno".
295
  errno = old_errno;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
296
}
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
297
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
298
/* Prints out a password to stdout */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
299
__attribute__((nonnull, warn_unused_result))
187 by Teddy Hogeborn
* debian/mandos-client.README.Debian: Document "eth0" default and how
300
static bool print_out_password(const char *buffer, size_t length){
64 by Teddy Hogeborn
* mandos-client.c (print_out_password): Strip trailing '\n'.
301
  ssize_t ret;
302
  for(size_t written = 0; written < length; written += (size_t)ret){
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
303
    ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
304
				   length - written));
305
    if(ret < 0){
306
      return false;
307
    }
308
  }
309
  return true;
310
}
311
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
312
/* Removes and free a plugin from the plugin list */
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
313
__attribute__((nonnull))
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
314
static void free_plugin(plugin *plugin_node){
315
  
316
  for(char **arg = plugin_node->argv; *arg != NULL; arg++){
317
    free(*arg);
318
  }
319
  free(plugin_node->argv);
320
  for(char **env = plugin_node->environ; *env != NULL; env++){
321
    free(*env);
322
  }
323
  free(plugin_node->environ);
324
  free(plugin_node->buffer);
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
325
  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
326
  /* Removes the plugin from the singly-linked list */
327
  if(plugin_node == plugin_list){
328
    /* First one - simple */
329
    plugin_list = plugin_list->next;
330
  } else {
331
    /* Second one or later */
332
    for(plugin *p = plugin_list; p != NULL; p = p->next){
333
      if(p->next == plugin_node){
334
	p->next = plugin_node->next;
335
	break;
336
      }
337
    }
338
  }
339
  
340
  free(plugin_node);
341
}
342
343
static void free_plugin_list(void){
344
  while(plugin_list != NULL){
345
    free_plugin(plugin_list);
98 by Teddy Hogeborn
* plugin-runner.c (getplugin): Only copy "name" if not NULL. Free
346
  }
24.1.54 by Björn Påhlsson
plugin-runner
347
}
348
13 by Björn Påhlsson
Added following support:
349
int main(int argc, char *argv[]){
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
350
  char *plugindir = NULL;
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
351
  char *pluginhelperdir = NULL;
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
352
  char *argfile = NULL;
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
353
  FILE *conffp;
237.7.253 by Teddy Hogeborn
plugin-runner: Release memory and close FD's correctly in all cases.
354
  struct dirent **direntries = NULL;
13 by Björn Påhlsson
Added following support:
355
  struct stat st;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
356
  fd_set rfds_all;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
357
  int ret, maxfd = 0;
237.2.17 by Teddy Hogeborn
Eliminate warning on 64-bit systems, thanks to Frans Pop
358
  ssize_t sret;
24.1.6 by Björn Påhlsson
plugbasedclient
359
  uid_t uid = 65534;
360
  gid_t gid = 65534;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
361
  bool debug = false;
362
  int exitstatus = EXIT_SUCCESS;
24.1.7 by Björn Påhlsson
merge
363
  struct sigaction old_sigchld_action;
364
  struct sigaction sigchld_action = { .sa_handler = handle_sigchld,
365
				      .sa_flags = SA_NOCLDSTOP };
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
366
  char **custom_argv = NULL;
367
  int custom_argc = 0;
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
368
  int dir_fd = -1;
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
369
  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
370
  /* Establish a signal handler */
371
  sigemptyset(&sigchld_action.sa_mask);
372
  ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
24.1.54 by Björn Påhlsson
plugin-runner
373
  if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
374
    error(0, errno, "sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
375
    exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
376
    goto fallback;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
377
  }
378
  ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
24.1.54 by Björn Påhlsson
plugin-runner
379
  if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
380
    error(0, errno, "sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
381
    exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
382
    goto fallback;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
383
  }
384
  
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
385
  /* The options we understand. */
386
  struct argp_option options[] = {
387
    { .name = "global-options", .key = 'g',
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
388
      .arg = "OPTION[,OPTION[,...]]",
389
      .doc = "Options passed to all plugins" },
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
390
    { .name = "global-env", .key = 'G',
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
391
      .arg = "VAR=value",
392
      .doc = "Environment variable passed to all plugins" },
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
393
    { .name = "options-for", .key = 'o',
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
394
      .arg = "PLUGIN:OPTION[,OPTION[,...]]",
395
      .doc = "Options passed only to specified plugin" },
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
396
    { .name = "env-for", .key = 'E',
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
397
      .arg = "PLUGIN:ENV=value",
398
      .doc = "Environment variable passed to specified plugin" },
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
399
    { .name = "disable", .key = 'd',
400
      .arg = "PLUGIN",
401
      .doc = "Disable a specific plugin", .group = 1 },
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
402
    { .name = "enable", .key = 'e',
403
      .arg = "PLUGIN",
404
      .doc = "Enable a specific plugin", .group = 1 },
24.1.5 by Björn Påhlsson
plugbasedclient:
405
    { .name = "plugin-dir", .key = 128,
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
406
      .arg = "DIRECTORY",
407
      .doc = "Specify a different plugin directory", .group = 2 },
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
408
    { .name = "config-file", .key = 129,
409
      .arg = "FILE",
410
      .doc = "Specify a different configuration file", .group = 2 },
411
    { .name = "userid", .key = 130,
412
      .arg = "ID", .flags = 0,
413
      .doc = "User ID the plugins will run as", .group = 3 },
414
    { .name = "groupid", .key = 131,
415
      .arg = "ID", .flags = 0,
416
      .doc = "Group ID the plugins will run as", .group = 3 },
417
    { .name = "debug", .key = 132,
418
      .doc = "Debug mode", .group = 4 },
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
419
    { .name = "plugin-helper-dir", .key = 133,
420
      .arg = "DIRECTORY",
421
      .doc = "Specify a different plugin helper directory",
422
      .group = 2 },
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
423
    /*
424
     * These reproduce what we would get without ARGP_NO_HELP
425
     */
426
    { .name = "help", .key = '?',
427
      .doc = "Give this help list", .group = -1 },
428
    { .name = "usage", .key = -3,
429
      .doc = "Give a short usage message", .group = -1 },
430
    { .name = "version", .key = 'V',
431
      .doc = "Print program version", .group = -1 },
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
432
    { .name = NULL }
433
  };
434
  
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
435
  __attribute__((nonnull(3)))
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
436
  error_t parse_opt(int key, char *arg, struct argp_state *state){
437
    errno = 0;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
438
    switch(key){
237.2.123 by Teddy Hogeborn
* plugin-runner.c (main): Move variables "tmpmax" and "tmp" into
439
      char *tmp;
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
440
      intmax_t tmp_id;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
441
    case 'g': 			/* --global-options */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
442
      {
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
443
	char *plugin_option;
444
	while((plugin_option = strsep(&arg, ",")) != NULL){
445
	  if(not add_argument(getplugin(NULL), plugin_option)){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
446
	    break;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
447
	  }
448
	}
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
449
	errno = 0;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
450
      }
451
      break;
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
452
    case 'G':			/* --global-env */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
453
      if(add_environment(getplugin(NULL), arg, true)){
454
	errno = 0;
455
      }
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
456
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
457
    case 'o':			/* --options-for */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
458
      {
459
	char *option_list = strchr(arg, ':');
460
	if(option_list == NULL){
461
	  argp_error(state, "No colon in \"%s\"", arg);
462
	  errno = EINVAL;
463
	  break;
464
	}
465
	*option_list = '\0';
466
	option_list++;
467
	if(arg[0] == '\0'){
468
	  argp_error(state, "Empty plugin name");
469
	  errno = EINVAL;
470
	  break;
471
	}
472
	char *option;
473
	while((option = strsep(&option_list, ",")) != NULL){
474
	  if(not add_argument(getplugin(arg), option)){
475
	    break;
24.1.50 by Björn Påhlsson
changed from using strtok to strsep
476
	  }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
477
	}
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
478
	errno = 0;
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
479
      }
480
      break;
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
481
    case 'E':			/* --env-for */
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
482
      {
483
	char *envdef = strchr(arg, ':');
484
	if(envdef == NULL){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
485
	  argp_error(state, "No colon in \"%s\"", arg);
486
	  errno = EINVAL;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
487
	  break;
488
	}
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
489
	*envdef = '\0';
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
490
	envdef++;
491
	if(arg[0] == '\0'){
492
	  argp_error(state, "Empty plugin name");
493
	  errno = EINVAL;
494
	  break;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
495
	}
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
496
	if(add_environment(getplugin(arg), envdef, true)){
497
	  errno = 0;
498
	}
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
499
      }
500
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
501
    case 'd':			/* --disable */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
502
      {
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
503
	plugin *p = getplugin(arg);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
504
	if(p != NULL){
505
	  p->disabled = true;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
506
	  errno = 0;
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
507
	}
24.1.5 by Björn Påhlsson
plugbasedclient:
508
      }
509
      break;
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
510
    case 'e':			/* --enable */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
511
      {
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
512
	plugin *p = getplugin(arg);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
513
	if(p != NULL){
514
	  p->disabled = false;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
515
	  errno = 0;
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
516
	}
517
      }
518
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
519
    case 128:			/* --plugin-dir */
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
520
      free(plugindir);
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
521
      plugindir = strdup(arg);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
522
      if(plugindir != NULL){
523
	errno = 0;
524
      }
24.1.5 by Björn Påhlsson
plugbasedclient:
525
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
526
    case 129:			/* --config-file */
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
527
      /* This is already done by parse_opt_config_file() */
528
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
529
    case 130:			/* --userid */
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
530
      tmp_id = strtoimax(arg, &tmp, 10);
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
531
      if(errno != 0 or tmp == arg or *tmp != '\0'
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
532
	 or tmp_id != (uid_t)tmp_id){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
533
	argp_error(state, "Bad user ID number: \"%s\", using %"
534
		   PRIdMAX, arg, (intmax_t)uid);
535
	break;
237.2.27 by Teddy Hogeborn
* plugin-runner.c (main): Use "sscanf" instead of "strtol"; using the
536
      }
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
537
      uid = (uid_t)tmp_id;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
538
      errno = 0;
24.1.6 by Björn Påhlsson
plugbasedclient
539
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
540
    case 131:			/* --groupid */
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
541
      tmp_id = strtoimax(arg, &tmp, 10);
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
542
      if(errno != 0 or tmp == arg or *tmp != '\0'
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
543
	 or tmp_id != (gid_t)tmp_id){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
544
	argp_error(state, "Bad group ID number: \"%s\", using %"
545
		   PRIdMAX, arg, (intmax_t)gid);
546
	break;
237.2.27 by Teddy Hogeborn
* plugin-runner.c (main): Use "sscanf" instead of "strtol"; using the
547
      }
237.7.84 by Björn Påhlsson
renamed some foomax values to what they actually represent
548
      gid = (gid_t)tmp_id;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
549
      errno = 0;
24.1.6 by Björn Påhlsson
plugbasedclient
550
      break;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
551
    case 132:			/* --debug */
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
552
      debug = true;
553
      break;
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
554
    case 133:			/* --plugin-helper-dir */
555
      free(pluginhelperdir);
556
      pluginhelperdir = strdup(arg);
557
      if(pluginhelperdir != NULL){
558
	errno = 0;
559
      }
560
      break;
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
561
      /*
562
       * These reproduce what we would get without ARGP_NO_HELP
563
       */
564
    case '?':			/* --help */
565
      state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
566
      argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
237.7.523 by Teddy Hogeborn
Fix warnings from -Wimplicit-fallthrough
567
      __builtin_unreachable();
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
568
    case -3:			/* --usage */
569
      state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
570
      argp_state_help(state, state->out_stream,
571
		      ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
237.7.523 by Teddy Hogeborn
Fix warnings from -Wimplicit-fallthrough
572
      __builtin_unreachable();
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
573
    case 'V':			/* --version */
574
      fprintf(state->out_stream, "%s\n", argp_program_version);
575
      exit(EXIT_SUCCESS);
576
      break;
237.2.27 by Teddy Hogeborn
* plugin-runner.c (main): Use "sscanf" instead of "strtol"; using the
577
/*
578
 * When adding more options before this line, remember to also add a
579
 * "case" to the "parse_opt_config_file" function below.
580
 */
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
581
    case ARGP_KEY_ARG:
178 by Teddy Hogeborn
* initramfs-tools-script: Fix permissions of "/tmp" in initrd.
582
      /* Cryptsetup always passes an argument, which is an empty
583
	 string if "none" was specified in /etc/crypttab.  So if
584
	 argument was empty, we ignore it silently. */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
585
      if(arg[0] == '\0'){
586
	break;
178 by Teddy Hogeborn
* initramfs-tools-script: Fix permissions of "/tmp" in initrd.
587
      }
237.7.490 by Teddy Hogeborn
Mark fallthrough case with comment
588
      /* FALLTHROUGH */
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
589
    default:
590
      return ARGP_ERR_UNKNOWN;
591
    }
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
592
    return errno;		/* Set to 0 at start */
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
593
  }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
594
  
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
595
  /* This option parser is the same as parse_opt() above, except it
596
     ignores everything but the --config-file option. */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
597
  error_t parse_opt_config_file(int key, char *arg,
598
				__attribute__((unused))
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
599
				struct argp_state *state){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
600
    errno = 0;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
601
    switch(key){
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
602
    case 'g': 			/* --global-options */
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
603
    case 'G':			/* --global-env */
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
604
    case 'o':			/* --options-for */
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
605
    case 'E':			/* --env-for */
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
606
    case 'd':			/* --disable */
138 by Teddy Hogeborn
* plugin-runner.c: Changed short option for "--global-env" to "-G",
607
    case 'e':			/* --enable */
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
608
    case 128:			/* --plugin-dir */
609
      break;
610
    case 129:			/* --config-file */
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
611
      free(argfile);
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
612
      argfile = strdup(arg);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
613
      if(argfile != NULL){
614
	errno = 0;
615
      }
237.2.118 by Teddy Hogeborn
* mandos: White-space fixes only.
616
      break;
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
617
    case 130:			/* --userid */
618
    case 131:			/* --groupid */
619
    case 132:			/* --debug */
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
620
    case 133:			/* --plugin-helper-dir */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
621
    case '?':			/* --help */
622
    case -3:			/* --usage */
623
    case 'V':			/* --version */
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
624
    case ARGP_KEY_ARG:
625
      break;
626
    default:
627
      return ARGP_ERR_UNKNOWN;
628
    }
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
629
    return errno;
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
630
  }
631
  
632
  struct argp argp = { .options = options,
633
		       .parser = parse_opt_config_file,
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
634
		       .args_doc = "",
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
635
		       .doc = "Mandos plugin runner -- Run plugins" };
636
  
237.2.28 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not accept a "d" character after
637
  /* Parse using parse_opt_config_file() in order to get the custom
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
638
     config file location, if any. */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
639
  ret = argp_parse(&argp, argc, argv,
640
		   ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
641
		   NULL, NULL);
642
  switch(ret){
643
  case 0:
644
    break;
645
  case ENOMEM:
646
  default:
647
    errno = ret;
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
648
    error(0, errno, "argp_parse");
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
649
    exitstatus = EX_OSERR;
650
    goto fallback;
651
  case EINVAL:
652
    exitstatus = EX_USAGE;
137 by Teddy Hogeborn
* plugin-runner.c (main/parse_opt): Removed code for "--config-file".
653
    goto fallback;
654
  }
655
  
656
  /* Reset to the normal argument parser */
657
  argp.parser = parse_opt;
658
  
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
659
  /* Open the configfile if available */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
660
  if(argfile == NULL){
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
661
    conffp = fopen(AFILE, "r");
662
  } else {
663
    conffp = fopen(argfile, "r");
237.2.118 by Teddy Hogeborn
* mandos: White-space fixes only.
664
  }
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
665
  if(conffp != NULL){
666
    char *org_line = NULL;
24.1.54 by Björn Påhlsson
plugin-runner
667
    char *p, *arg, *new_arg, *line;
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
668
    size_t size = 0;
669
    const char whitespace_delims[] = " \r\t\f\v\n";
670
    const char comment_delim[] = "#";
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
671
    
24.1.67 by Björn Påhlsson
transformed a function to a part of main
672
    custom_argc = 1;
673
    custom_argv = malloc(sizeof(char*) * 2);
674
    if(custom_argv == NULL){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
675
      error(0, errno, "malloc");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
676
      exitstatus = EX_OSERR;
24.1.67 by Björn Påhlsson
transformed a function to a part of main
677
      goto fallback;
678
    }
679
    custom_argv[0] = argv[0];
680
    custom_argv[1] = NULL;
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
681
    
133 by Teddy Hogeborn
* plugin-runner.c: Break a couple of long lines.
682
    /* for each line in the config file, strip whitespace and ignore
683
       commented text */
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
684
    while(true){
685
      sret = getline(&org_line, &size, conffp);
686
      if(sret == -1){
687
	break;
688
      }
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
689
      
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
690
      line = org_line;
691
      arg = strsep(&line, comment_delim);
692
      while((p = strsep(&arg, whitespace_delims)) != NULL){
693
	if(p[0] == '\0'){
694
	  continue;
695
	}
696
	new_arg = strdup(p);
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
697
	if(new_arg == NULL){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
698
	  error(0, errno, "strdup");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
699
	  exitstatus = EX_OSERR;
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
700
	  free(org_line);
701
	  goto fallback;
702
	}
703
	
24.1.67 by Björn Påhlsson
transformed a function to a part of main
704
	custom_argc += 1;
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
705
	{
706
	  char **new_argv = realloc(custom_argv, sizeof(char *)
237.7.345 by Teddy Hogeborn
plugin-runner.c: Use size_t to realloc() for custom plugin args.
707
				    * ((size_t)custom_argc + 1));
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
708
	  if(new_argv == NULL){
709
	    error(0, errno, "realloc");
710
	    exitstatus = EX_OSERR;
711
	    free(new_arg);
712
	    free(org_line);
713
	    goto fallback;
714
	  } else {
715
	    custom_argv = new_argv;
716
	  }
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
717
	}
24.1.67 by Björn Påhlsson
transformed a function to a part of main
718
	custom_argv[custom_argc-1] = new_arg;
237.2.118 by Teddy Hogeborn
* mandos: White-space fixes only.
719
	custom_argv[custom_argc] = NULL;
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
720
      }
721
    }
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
722
    do {
237.2.122 by Teddy Hogeborn
* plugins-runner.c (main): Bug fix: Close config file.
723
      ret = fclose(conffp);
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
724
    } while(ret == EOF and errno == EINTR);
237.2.122 by Teddy Hogeborn
* plugins-runner.c (main): Bug fix: Close config file.
725
    if(ret == EOF){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
726
      error(0, errno, "fclose");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
727
      exitstatus = EX_IOERR;
237.2.122 by Teddy Hogeborn
* plugins-runner.c (main): Bug fix: Close config file.
728
      goto fallback;
729
    }
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
730
    free(org_line);
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
731
  } else {
24.1.52 by Björn Påhlsson
merge + minor adjustments
732
    /* Check for harmful errors and go to fallback. Other errors might
733
       not affect opening plugins */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
734
    if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
735
      error(0, errno, "fopen");
237.2.165 by Teddy Hogeborn
* mandos (Client.disable): Rename keyword argument "log" to "quiet",
736
      exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
737
      goto fallback;
24.1.8 by Björn Påhlsson
plugbasedclient
738
    }
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
739
  }
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
740
  /* If there were any arguments from the configuration file, pass
741
     them to parser as command line arguments */
24.1.51 by Björn Påhlsson
Added configuration files support for mandos-client
742
  if(custom_argv != NULL){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
743
    ret = argp_parse(&argp, custom_argc, custom_argv,
744
		     ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
745
		     NULL, NULL);
746
    switch(ret){
747
    case 0:
748
      break;
749
    case ENOMEM:
750
    default:
751
      errno = ret;
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
752
      error(0, errno, "argp_parse");
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
753
      exitstatus = EX_OSERR;
754
      goto fallback;
755
    case EINVAL:
756
      exitstatus = EX_CONFIG;
24.1.54 by Björn Påhlsson
plugin-runner
757
      goto fallback;
24.1.26 by Björn Påhlsson
tally count of used symbols
758
    }
24.1.8 by Björn Påhlsson
plugbasedclient
759
  }
760
  
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
761
  /* Parse actual command line arguments, to let them override the
762
     config file */
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
763
  ret = argp_parse(&argp, argc, argv,
764
		   ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
765
		   NULL, NULL);
766
  switch(ret){
767
  case 0:
768
    break;
769
  case ENOMEM:
770
  default:
771
    errno = ret;
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
772
    error(0, errno, "argp_parse");
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
773
    exitstatus = EX_OSERR;
774
    goto fallback;
775
  case EINVAL:
776
    exitstatus = EX_USAGE;
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
777
    goto fallback;
778
  }
779
  
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
780
  {
781
    char *pluginhelperenv;
782
    bool bret = true;
783
    ret = asprintf(&pluginhelperenv, "MANDOSPLUGINHELPERDIR=%s",
784
		   pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
785
    if(ret != -1){
786
      bret = add_environment(getplugin(NULL), pluginhelperenv, true);
787
    }
788
    if(ret == -1 or not bret){
789
      error(0, errno, "Failed to set MANDOSPLUGINHELPERDIR"
790
	    " environment variable to \"%s\" for all plugins\n",
791
	    pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
792
    }
793
    if(ret != -1){
794
      free(pluginhelperenv);
795
    }
796
  }
797
  
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
798
  if(debug){
237.7.438 by Teddy Hogeborn
Add spaces around all '=' signs in all C code.
799
    for(plugin *p = plugin_list; p != NULL; p = p->next){
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
800
      fprintf(stderr, "Plugin: %s has %d arguments\n",
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
801
	      p->name ? p->name : "Global", p->argc - 1);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
802
      for(char **a = p->argv; *a != NULL; a++){
803
	fprintf(stderr, "\tArg: %s\n", *a);
804
      }
237.2.31 by Teddy Hogeborn
Fixes for sscanf usage:
805
      fprintf(stderr, "...and %d environment variables\n", p->envc);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
806
      for(char **a = p->environ; *a != NULL; a++){
807
	fprintf(stderr, "\t%s\n", *a);
808
      }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
809
    }
810
  }
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
811
  
237.16.11 by Teddy Hogeborn
* Makefile (run-client): Add "--network-hook-dir" option.
812
  if(getuid() == 0){
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
813
    /* Work around Debian bug #633582:
237.7.416 by Teddy Hogeborn
Change all http:// URLs to https:// wherever possible.
814
       <https://bugs.debian.org/633582> */
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
815
    int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
816
    if(plugindir_fd == -1){
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
817
      if(errno != ENOENT){
818
	error(0, errno, "open(\"" PDIR "\")");
819
      }
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
820
    } else {
821
      ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
822
      if(ret == -1){
823
	error(0, errno, "fstat");
824
      } else {
825
	if(S_ISDIR(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
826
	  ret = fchown(plugindir_fd, uid, gid);
827
	  if(ret == -1){
828
	    error(0, errno, "fchown");
829
	  }
830
	}
831
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
832
      close(plugindir_fd);
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
833
    }
834
  }
835
  
836
  /* Lower permissions */
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
837
  ret = setgid(gid);
237.2.62 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix: Do setgid before setuid.
838
  if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
839
    error(0, errno, "setgid");
237.2.62 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix: Do setgid before setuid.
840
  }
24.1.6 by Björn Påhlsson
plugbasedclient
841
  ret = setuid(uid);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
842
  if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
843
    error(0, errno, "setuid");
24.1.6 by Björn Påhlsson
plugbasedclient
844
  }
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
845
  
237.2.147 by Teddy Hogeborn
* plugin-runner.c (main): Use the O_CLOEXEC flag, if available, when
846
  /* Open plugin directory with close_on_exec flag */
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
847
  {
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
848
    dir_fd = open(plugindir != NULL ? plugindir : PDIR, O_RDONLY |
849
#ifdef O_CLOEXEC
850
		  O_CLOEXEC
851
#else  /* not O_CLOEXEC */
852
		  0
853
#endif	/* not O_CLOEXEC */
854
		  );
237.2.147 by Teddy Hogeborn
* plugin-runner.c (main): Use the O_CLOEXEC flag, if available, when
855
    if(dir_fd == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
856
      error(0, errno, "Could not open plugin dir");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
857
      exitstatus = EX_UNAVAILABLE;
237.2.147 by Teddy Hogeborn
* plugin-runner.c (main): Use the O_CLOEXEC flag, if available, when
858
      goto fallback;
859
    }
860
    
861
#ifndef O_CLOEXEC
862
  /* Set the FD_CLOEXEC flag on the directory */
863
    ret = set_cloexec_flag(dir_fd);
864
    if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
865
      error(0, errno, "set_cloexec_flag");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
866
      exitstatus = EX_OSERR;
237.2.147 by Teddy Hogeborn
* plugin-runner.c (main): Use the O_CLOEXEC flag, if available, when
867
      goto fallback;
868
    }
869
#endif	/* O_CLOEXEC */
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
870
  }
871
  
872
  int good_name(const struct dirent * const dirent){
873
    const char * const patterns[] = { ".*", "#*#", "*~", "*.dpkg-new",
874
				      "*.dpkg-old", "*.dpkg-bak",
875
				      "*.dpkg-divert", NULL };
876
#ifdef __GNUC__
877
#pragma GCC diagnostic push
878
#pragma GCC diagnostic ignored "-Wcast-qual"
879
#endif
880
    for(const char **pat = (const char **)patterns;
881
	*pat != NULL; pat++){
882
#ifdef __GNUC__
883
#pragma GCC diagnostic pop
884
#endif
885
      if(fnmatch(*pat, dirent->d_name, FNM_FILE_NAME | FNM_PERIOD)
886
	 != FNM_NOMATCH){
887
	if(debug){
888
	    fprintf(stderr, "Ignoring plugin dir entry \"%s\""
889
		    " matching pattern %s\n", dirent->d_name, *pat);
890
	}
891
	return 0;
892
      }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
893
    }
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
894
    return 1;
895
  }
896
  
897
  int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
898
			     alphasort);
899
  if(numplugins == -1){
900
    error(0, errno, "Could not scan plugin dir");
237.7.253 by Teddy Hogeborn
plugin-runner: Release memory and close FD's correctly in all cases.
901
    direntries = NULL;
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
902
    exitstatus = EX_OSERR;
903
    goto fallback;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
904
  }
24.1.1 by Björn Påhlsson
Added syntax and support for plugbasedclient arguments and how they
905
  
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
906
  FD_ZERO(&rfds_all);
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
907
  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
908
  /* Read and execute any executable in the plugin directory*/
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
909
  for(int i = 0; i < numplugins; i++){
910
    
911
    int plugin_fd = openat(dir_fd, direntries[i]->d_name, O_RDONLY);
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
912
    if(plugin_fd == -1){
913
      error(0, errno, "Could not open plugin");
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
914
      free(direntries[i]);
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
915
      continue;
169 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix: use built-in default value if
916
    }
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
917
    ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
918
    if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
919
      error(0, errno, "stat");
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
920
      close(plugin_fd);
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
921
      free(direntries[i]);
24.1.46 by Björn Påhlsson
mandos-client
922
      continue;
24.1.26 by Björn Påhlsson
tally count of used symbols
923
    }
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
924
    
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
925
    /* Ignore non-executable files */
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
926
    if(not S_ISREG(st.st_mode)
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
927
       or (TEMP_FAILURE_RETRY(faccessat(dir_fd, direntries[i]->d_name,
928
					X_OK, 0)) != 0)){
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
929
      if(debug){
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
930
	fprintf(stderr, "Ignoring plugin dir entry \"%s/%s\""
931
		" with bad type or mode\n",
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
932
		plugindir != NULL ? plugindir : PDIR,
933
		direntries[i]->d_name);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
934
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
935
      close(plugin_fd);
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
936
      free(direntries[i]);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
937
      continue;
938
    }
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
939
    
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
940
    plugin *p = getplugin(direntries[i]->d_name);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
941
    if(p == NULL){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
942
      error(0, errno, "getplugin");
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
943
      close(plugin_fd);
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
944
      free(direntries[i]);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
945
      continue;
946
    }
947
    if(p->disabled){
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
948
      if(debug){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
949
	fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
950
		direntries[i]->d_name);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
951
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
952
      close(plugin_fd);
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
953
      free(direntries[i]);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
954
      continue;
955
    }
32 by Teddy Hogeborn
* plugins.d/plugbasedclient.c (set_cloexec_flag): New function.
956
    {
957
      /* Add global arguments to argument list for this plugin */
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
958
      plugin *g = getplugin(NULL);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
959
      if(g != NULL){
960
	for(char **a = g->argv + 1; *a != NULL; a++){
961
	  if(not add_argument(p, *a)){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
962
	    error(0, errno, "add_argument");
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
963
	  }
964
	}
965
	/* Add global environment variables */
966
	for(char **e = g->environ; *e != NULL; e++){
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
967
	  if(not add_environment(p, *e, false)){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
968
	    error(0, errno, "add_environment");
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
969
	  }
970
	}
971
      }
972
    }
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
973
    /* If this plugin has any environment variables, we need to
974
       duplicate the environment from this process, too. */
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
975
    if(p->environ[0] != NULL){
976
      for(char **e = environ; *e != NULL; e++){
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
977
	if(not add_environment(p, *e, false)){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
978
	  error(0, errno, "add_environment");
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
979
	}
980
      }
981
    }
982
    
98 by Teddy Hogeborn
* plugin-runner.c (getplugin): Only copy "name" if not NULL. Free
983
    int pipefd[2];
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
984
#ifndef O_CLOEXEC
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
985
    ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
986
#else  /* O_CLOEXEC */
987
    ret = (int)TEMP_FAILURE_RETRY(pipe2(pipefd, O_CLOEXEC));
988
#endif	/* O_CLOEXEC */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
989
    if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
990
      error(0, errno, "pipe");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
991
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
992
      free(direntries[i]);
24.1.54 by Björn Påhlsson
plugin-runner
993
      goto fallback;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
994
    }
237.7.250 by Teddy Hogeborn
In plugin-runner, protect against a larger FD_SETSIZE than fd_set.
995
    if(pipefd[0] >= FD_SETSIZE){
996
      fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
997
	      FD_SETSIZE);
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
998
      close(pipefd[0]);
999
      close(pipefd[1]);
237.7.250 by Teddy Hogeborn
In plugin-runner, protect against a larger FD_SETSIZE than fd_set.
1000
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1001
      free(direntries[i]);
237.7.250 by Teddy Hogeborn
In plugin-runner, protect against a larger FD_SETSIZE than fd_set.
1002
      goto fallback;
1003
    }
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
1004
#ifndef O_CLOEXEC
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1005
    /* Ask OS to automatic close the pipe on exec */
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1006
    ret = set_cloexec_flag(pipefd[0]);
1007
    if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1008
      error(0, errno, "set_cloexec_flag");
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1009
      close(pipefd[0]);
1010
      close(pipefd[1]);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1011
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1012
      free(direntries[i]);
24.1.54 by Björn Påhlsson
plugin-runner
1013
      goto fallback;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1014
    }
1015
    ret = set_cloexec_flag(pipefd[1]);
1016
    if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1017
      error(0, errno, "set_cloexec_flag");
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1018
      close(pipefd[0]);
1019
      close(pipefd[1]);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1020
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1021
      free(direntries[i]);
24.1.54 by Björn Påhlsson
plugin-runner
1022
      goto fallback;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1023
    }
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
1024
#endif	/* not O_CLOEXEC */
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1025
    /* Block SIGCHLD until process is safely in process list */
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
1026
    ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1027
					      &sigchld_action.sa_mask,
1028
					      NULL));
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1029
    if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1030
      error(0, errno, "sigprocmask");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1031
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1032
      free(direntries[i]);
24.1.54 by Björn Påhlsson
plugin-runner
1033
      goto fallback;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1034
    }
136 by Teddy Hogeborn
* plugin-runner.c (add_environment): Override existing environment
1035
    /* Starting a new process to be watched */
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
1036
    pid_t pid;
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1037
    do {
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
1038
      pid = fork();
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1039
    } while(pid == -1 and errno == EINTR);
24.1.46 by Björn Påhlsson
mandos-client
1040
    if(pid == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1041
      error(0, errno, "fork");
237.7.249 by Teddy Hogeborn
plugin-runner: Restore resources correctly if fork() fails.
1042
      TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1043
				     &sigchld_action.sa_mask, NULL));
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1044
      close(pipefd[0]);
1045
      close(pipefd[1]);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1046
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1047
      free(direntries[i]);
24.1.54 by Björn Påhlsson
plugin-runner
1048
      goto fallback;
24.1.46 by Björn Påhlsson
mandos-client
1049
    }
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
1050
    if(pid == 0){
1051
      /* this is the child process */
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1052
      ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1053
      if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1054
	error(0, errno, "sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1055
	_exit(EX_OSERR);
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1056
      }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1057
      ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1058
      if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1059
	error(0, errno, "sigprocmask");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1060
	_exit(EX_OSERR);
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1061
      }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1062
      
24.1.26 by Björn Påhlsson
tally count of used symbols
1063
      ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
1064
      if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1065
	error(0, errno, "dup2");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1066
	_exit(EX_OSERR);
24.1.26 by Björn Påhlsson
tally count of used symbols
1067
      }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1068
      
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
1069
      if(fexecve(plugin_fd, p->argv,
237.7.222 by Teddy Hogeborn
Improve error message when working around Debian bug #633582.
1070
		(p->environ[0] != NULL) ? p->environ : environ) < 0){
237.7.223 by Teddy Hogeborn
Use openat() etc. in plugin-runner. Also one less useless warning.
1071
	error(0, errno, "fexecve for %s/%s",
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
1072
	      plugindir != NULL ? plugindir : PDIR,
1073
	      direntries[i]->d_name);
237.7.222 by Teddy Hogeborn
Improve error message when working around Debian bug #633582.
1074
	_exit(EX_OSERR);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
1075
      }
1076
      /* no return */
1077
    }
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1078
    /* Parent process */
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1079
    close(pipefd[1]);		/* Close unused write end of pipe */
1080
    close(plugin_fd);
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
1081
    plugin *new_plugin = getplugin(direntries[i]->d_name);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1082
    if(new_plugin == NULL){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1083
      error(0, errno, "getplugin");
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
1084
      ret = (int)(TEMP_FAILURE_RETRY
1085
		  (sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1086
			       NULL)));
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1087
      if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1088
        error(0, errno, "sigprocmask");
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1089
      }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1090
      exitstatus = EX_OSERR;
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1091
      free(direntries[i]);
24.1.54 by Björn Påhlsson
plugin-runner
1092
      goto fallback;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
1093
    }
237.7.264 by Teddy Hogeborn
plugin-runner: Bug Fix: Fix some memory leaks.
1094
    free(direntries[i]);
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
1095
    
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1096
    new_plugin->pid = pid;
1097
    new_plugin->fd = pipefd[0];
237.7.500 by Teddy Hogeborn
plugin-runner: More debug output
1098
1099
    if(debug){
1100
      fprintf(stderr, "Plugin %s started (PID %" PRIdMAX ")\n",
1101
	      new_plugin->name, (intmax_t) (new_plugin->pid));
1102
    }
1103
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1104
    /* Unblock SIGCHLD so signal handler can be run if this process
1105
       has already completed */
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
1106
    ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1107
					      &sigchld_action.sa_mask,
1108
					      NULL));
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1109
    if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1110
      error(0, errno, "sigprocmask");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1111
      exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
1112
      goto fallback;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1113
    }
1114
    
237.7.358 by Teddy Hogeborn
Depend on the GNU C Library 2.16 or later
1115
    FD_SET(new_plugin->fd, &rfds_all);
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1116
    
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1117
    if(maxfd < new_plugin->fd){
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1118
      maxfd = new_plugin->fd;
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
1119
    }
13 by Björn Påhlsson
Added following support:
1120
  }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1121
  
237.7.253 by Teddy Hogeborn
plugin-runner: Release memory and close FD's correctly in all cases.
1122
  free(direntries);
1123
  direntries = NULL;
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1124
  close(dir_fd);
237.7.253 by Teddy Hogeborn
plugin-runner: Release memory and close FD's correctly in all cases.
1125
  dir_fd = -1;
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
1126
  free_plugin(getplugin(NULL));
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1127
  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1128
  for(plugin *p = plugin_list; p != NULL; p = p->next){
1129
    if(p->pid != 0){
1130
      break;
1131
    }
1132
    if(p->next == NULL){
1133
      fprintf(stderr, "No plugin processes started. Incorrect plugin"
1134
	      " directory?\n");
1135
      free_plugin_list();
1136
    }
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1137
  }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1138
  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1139
  /* Main loop while running plugins exist */
1140
  while(plugin_list){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1141
    fd_set rfds = rfds_all;
1142
    int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
1143
    if(select_ret == -1 and errno != EINTR){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1144
      error(0, errno, "select");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1145
      exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
1146
      goto fallback;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1147
    }
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1148
    /* OK, now either a process completed, or something can be read
1149
       from one of them */
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
1150
    for(plugin *proc = plugin_list; proc != NULL;){
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1151
      /* Is this process completely done? */
237.2.60 by Teddy Hogeborn
* plugin-runner.c (struct plugin.status): Changed type to "int".
1152
      if(proc->completed and proc->eof){
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1153
	/* Only accept the plugin output if it exited cleanly */
1154
	if(not WIFEXITED(proc->status)
1155
	   or WEXITSTATUS(proc->status) != 0){
1156
	  /* Bad exit by plugin */
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1157
	  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1158
	  if(debug){
1159
	    if(WIFEXITED(proc->status)){
237.2.64 by Teddy Hogeborn
* plugin-runner.c (main): If debugging, print name of failed plugins.
1160
	      fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1161
		      " status %d\n", proc->name,
1162
		      (intmax_t) (proc->pid),
60 by Teddy Hogeborn
* mandos-client.c (main): Cast pid_t to unsigned int before printing.
1163
		      WEXITSTATUS(proc->status));
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1164
	    } else if(WIFSIGNALED(proc->status)){
237.2.64 by Teddy Hogeborn
* plugin-runner.c (main): If debugging, print name of failed plugins.
1165
	      fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
237.2.119 by Teddy Hogeborn
* plugin-runner.c (main): When a plugin is killed by a signal, show
1166
		      " signal %d: %s\n", proc->name,
237.2.64 by Teddy Hogeborn
* plugin-runner.c (main): If debugging, print name of failed plugins.
1167
		      (intmax_t) (proc->pid),
237.2.119 by Teddy Hogeborn
* plugin-runner.c (main): When a plugin is killed by a signal, show
1168
		      WTERMSIG(proc->status),
1169
		      strsignal(WTERMSIG(proc->status)));
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1170
	    }
1171
	  }
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1172
	  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1173
	  /* Remove the plugin */
237.7.358 by Teddy Hogeborn
Depend on the GNU C Library 2.16 or later
1174
	  FD_CLR(proc->fd, &rfds_all);
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1175
	  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1176
	  /* Block signal while modifying process_list */
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
1177
	  ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1178
					(SIG_BLOCK,
1179
					 &sigchld_action.sa_mask,
1180
					 NULL));
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1181
	  if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1182
	    error(0, errno, "sigprocmask");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1183
	    exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
1184
	    goto fallback;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1185
	  }
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
1186
	  
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1187
	  plugin *next_plugin = proc->next;
1188
	  free_plugin(proc);
1189
	  proc = next_plugin;
1190
	  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1191
	  /* We are done modifying process list, so unblock signal */
237.2.130 by Teddy Hogeborn
* init.d-mandos: Bug fix: Correct the LSB header.
1192
	  ret = (int)(TEMP_FAILURE_RETRY
1193
		      (sigprocmask(SIG_UNBLOCK,
1194
				   &sigchld_action.sa_mask, NULL)));
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1195
	  if(ret < 0){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1196
	    error(0, errno, "sigprocmask");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1197
	    exitstatus = EX_OSERR;
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1198
	    goto fallback;
1199
	  }
1200
	  
1201
	  if(plugin_list == NULL){
1202
	    break;
1203
	  }
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
1204
	  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1205
	  continue;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1206
	}
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1207
	
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1208
	/* This process exited nicely, so print its buffer */
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1209
	
102 by Teddy Hogeborn
* plugin-runner.c (process): Set "completed" and "status" as volatile.
1210
	bool bret = print_out_password(proc->buffer,
1211
				       proc->buffer_length);
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
1212
	if(not bret){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1213
	  error(0, errno, "print_out_password");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1214
	  exitstatus = EX_IOERR;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1215
	}
24.1.54 by Björn Påhlsson
plugin-runner
1216
	goto fallback;
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1217
      }
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1218
      
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1219
      /* This process has not completed.  Does it have any output? */
237.7.358 by Teddy Hogeborn
Depend on the GNU C Library 2.16 or later
1220
      if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1221
	/* This process had nothing to say at this time */
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
1222
	proc = proc->next;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1223
	continue;
1224
      }
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1225
      /* Before reading, make the process' data buffer large enough */
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1226
      if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
1227
	char *new_buffer = realloc(proc->buffer, proc->buffer_size
1228
				   + (size_t) BUFFER_SIZE);
1229
	if(new_buffer == NULL){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1230
	  error(0, errno, "malloc");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1231
	  exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
1232
	  goto fallback;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1233
	}
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
1234
	proc->buffer = new_buffer;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1235
	proc->buffer_size += BUFFER_SIZE;
1236
      }
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1237
      /* Read from the process */
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
1238
      sret = TEMP_FAILURE_RETRY(read(proc->fd,
1239
				     proc->buffer
1240
				     + proc->buffer_length,
1241
				     BUFFER_SIZE));
237.2.17 by Teddy Hogeborn
Eliminate warning on 64-bit systems, thanks to Frans Pop
1242
      if(sret < 0){
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1243
	/* Read error from this process; ignore the error */
24.1.92 by Björn Påhlsson
Several memory leaks detected by valgrind fixed
1244
	proc = proc->next;
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1245
	continue;
1246
      }
237.2.17 by Teddy Hogeborn
Eliminate warning on 64-bit systems, thanks to Frans Pop
1247
      if(sret == 0){
34 by Teddy Hogeborn
* plugbasedclient.c (main): Check if plugin dir could be opened. Set
1248
	/* got EOF */
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1249
	proc->eof = true;
1250
      } else {
237.2.17 by Teddy Hogeborn
Eliminate warning on 64-bit systems, thanks to Frans Pop
1251
	proc->buffer_length += (size_t) sret;
13 by Björn Påhlsson
Added following support:
1252
      }
1253
    }
1254
  }
237.2.75 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1255
  
1256
  
24.1.54 by Björn Påhlsson
plugin-runner
1257
 fallback:
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
1258
  
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1259
  if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1260
			     and exitstatus != EX_OK)){
102 by Teddy Hogeborn
* plugin-runner.c (process): Set "completed" and "status" as volatile.
1261
    /* Fallback if all plugins failed, none are found or an error
1262
       occured */
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
1263
    bool bret;
1264
    fprintf(stderr, "Going to fallback mode using getpass(3)\n");
1265
    char *passwordbuffer = getpass("Password: ");
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
1266
    size_t len = strlen(passwordbuffer);
1267
    /* Strip trailing newline */
1268
    if(len > 0 and passwordbuffer[len-1] == '\n'){
1269
      passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1270
      len--;
1271
    }
1272
    bret = print_out_password(passwordbuffer, len);
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
1273
    if(not bret){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1274
      error(0, errno, "print_out_password");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1275
      exitstatus = EX_IOERR;
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
1276
    }
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1277
  }
24.1.42 by Björn Påhlsson
Added fallback to mandos-client
1278
  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1279
  /* Restore old signal handler */
24.1.54 by Björn Påhlsson
plugin-runner
1280
  ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1281
  if(ret == -1){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1282
    error(0, errno, "sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1283
    exitstatus = EX_OSERR;
24.1.54 by Björn Påhlsson
plugin-runner
1284
  }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1285
  
24.1.54 by Björn Påhlsson
plugin-runner
1286
  if(custom_argv != NULL){
24.1.67 by Björn Påhlsson
transformed a function to a part of main
1287
    for(char **arg = custom_argv+1; *arg != NULL; arg++){
24.1.54 by Björn Påhlsson
plugin-runner
1288
      free(*arg);
78 by Teddy Hogeborn
Add feature to specify custom environment variables for plugins.
1289
    }
24.1.54 by Björn Påhlsson
plugin-runner
1290
    free(custom_argv);
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1291
  }
1292
  
237.7.253 by Teddy Hogeborn
plugin-runner: Release memory and close FD's correctly in all cases.
1293
  free(direntries);
1294
  
237.7.251 by Teddy Hogeborn
In plugin-runner, do scandirat() or scandir() instead of readdir().
1295
  if(dir_fd != -1){
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1296
    close(dir_fd);
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1297
  }
1298
  
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1299
  /* Kill the processes */
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1300
  for(plugin *p = plugin_list; p != NULL; p = p->next){
1301
    if(p->pid != 0){
1302
      close(p->fd);
1303
      ret = kill(p->pid, SIGTERM);
1304
      if(ret == -1 and errno != ESRCH){
1305
	/* Set-uid proccesses might not get closed */
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1306
	error(0, errno, "kill");
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1307
      }
24.1.26 by Björn Påhlsson
tally count of used symbols
1308
    }
13 by Björn Påhlsson
Added following support:
1309
  }
1310
  
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1311
  /* Wait for any remaining child processes to terminate */
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1312
  do {
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1313
    ret = wait(NULL);
1314
  } while(ret >= 0);
1315
  if(errno != ECHILD){
24.1.155 by Björn Påhlsson
mandos server: Added debuglevel that adjust at what level information
1316
    error(0, errno, "wait");
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1317
  }
210 by Teddy Hogeborn
* debian/mandos-client.postinst: Change home directory to
1318
  
24.1.76 by Björn Påhlsson
Rearranged so plugins and processes is the same thing
1319
  free_plugin_list();
1320
  
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
1321
  free(plugindir);
237.25.1 by Teddy Hogeborn
Add a plugin helper directory, available to all plugins.
1322
  free(pluginhelperdir);
24.1.69 by Björn Påhlsson
added configfile as a optional argument to plugin-runner
1323
  free(argfile);
35 by Teddy Hogeborn
* plugbasedclient.c (struct process): New fields "eof", "completed",
1324
  
31 by Teddy Hogeborn
* plugins.d/plugbasedclient.c: Update include file comments.
1325
  return exitstatus;
13 by Björn Påhlsson
Added following support:
1326
}