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- Committer: Teddy Hogeborn
- Date: 2009-09-08 06:28:20 UTC
- Revision ID: teddy@fukt.bsnet.se-20090908062820-xgkdkrnvuze9vc72
* debian/mandos-client.README.Debian: Improved wording and formatting.
Updated location of nfsroot.txt.
* debian/mandos.README.Debian: Improved wording and formatting.
Updated location of nfsroot.txt.
* debian/mandos.README.Debian: Improved wording and formatting.
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- network-protocol.txt
- files renamed:
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- files modified:
- Makefile
added
removed
plugin-runner.c
1
/* -*- coding: utf-8 -*- */
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
6
7
*
7
8
* This program is free software: you can redistribute it and/or
8
9
* modify it under the terms of the GNU General Public License as
27
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
28
29
EXIT_SUCCESS, realloc() */
29
30
#include <stdbool.h> /* bool, true, false */
30
#include <stdio.h> /* perror, popen(), fileno(),
31
fprintf(), stderr, STDOUT_FILENO */
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
stderr, STDOUT_FILENO */
32
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
33
34
stat, waitpid(), WIFEXITED(),
34
35
WEXITSTATUS(), wait(), pid_t,
37
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
38
39
FD_SET(), FD_ISSET(), FD_CLR */
39
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
40
WEXITSTATUS() */
41
WEXITSTATUS(), WTERMSIG(),
42
WCOREDUMP() */
41
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
42
44
#include <iso646.h> /* and, or, not */
43
45
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
48
fcntl(), setuid(), setgid(),
47
49
F_GETFD, F_SETFD, FD_CLOEXEC,
48
50
access(), pipe(), fork(), close()
49
dup2, STDOUT_FILENO, _exit(),
51
dup2(), STDOUT_FILENO, _exit(),
50
52
execv(), write(), read(),
51
53
close() */
52
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
53
55
FD_CLOEXEC */
54
#include <string.h> /* strsep, strlen(), asprintf() */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal() */
55
58
#include <errno.h> /* errno */
56
59
#include <argp.h> /* struct argp_option, struct
57
60
argp_state, struct argp,
58
61
argp_parse(), ARGP_ERR_UNKNOWN,
59
ARGP_KEY_END, ARGP_KEY_ARG, error_t */
62
ARGP_KEY_END, ARGP_KEY_ARG,
63
error_t */
60
64
#include <signal.h> /* struct sigaction, sigemptyset(),
61
65
sigaddset(), sigaction(),
62
66
sigprocmask(), SIG_BLOCK, SIGCHLD,
63
SIG_UNBLOCK, kill() */
67
SIG_UNBLOCK, kill(), sig_atomic_t
68
*/
64
69
#include <errno.h> /* errno, EBADF */
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
65
71
66
72
#define BUFFER_SIZE 256
67
#define ARGFILE "/conf/conf.d/mandos/plugin-runner.conf"
68
69
const char *argp_program_version = "plugin-runner 1.0";
73
74
#define PDIR "/lib/mandos/plugins.d"
75
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
76
77
const char *argp_program_version = "plugin-runner " VERSION;
70
78
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
71
79
72
struct process;
73
74
typedef struct process{
75
pid_t pid;
76
int fd;
77
char *buffer;
78
size_t buffer_size;
79
size_t buffer_length;
80
bool eof;
81
bool completed;
82
int status;
83
struct process *next;
84
} process;
85
86
80
typedef struct plugin{
87
81
char *name; /* can be NULL or any plugin name */
88
82
char **argv;
90
84
char **environ;
91
85
int envc;
92
86
bool disabled;
87
88
/* Variables used for running processes*/
89
pid_t pid;
90
int fd;
91
char *buffer;
92
size_t buffer_size;
93
size_t buffer_length;
94
bool eof;
95
volatile sig_atomic_t completed;
96
int status;
93
97
struct plugin *next;
94
98
} plugin;
95
99
96
static plugin *getplugin(char *name, plugin **plugin_list){
97
for (plugin *p = *plugin_list; p != NULL; p = p->next){
98
if ((p->name == name)
99
or (p->name and name and (strcmp(p->name, name) == 0))){
100
static plugin *plugin_list = NULL;
101
102
/* Gets an existing plugin based on name,
103
or if none is found, creates a new one */
104
static plugin *getplugin(char *name){
105
/* Check for exiting plugin with that name */
106
for(plugin *p = plugin_list; p != NULL; p = p->next){
107
if((p->name == name)
108
or (p->name and name and (strcmp(p->name, name) == 0))){
100
109
return p;
101
110
}
102
111
}
103
112
/* Create a new plugin */
104
plugin *new_plugin = malloc(sizeof(plugin));
105
if (new_plugin == NULL){
113
plugin *new_plugin = NULL;
114
do {
115
new_plugin = malloc(sizeof(plugin));
116
} while(new_plugin == NULL and errno == EINTR);
117
if(new_plugin == NULL){
106
118
return NULL;
107
119
}
108
*new_plugin = (plugin) { .name = name,
109
.argc = 1,
110
.envc = 0,
111
.disabled = false,
112
.next = *plugin_list };
113
114
new_plugin->argv = malloc(sizeof(char *) * 2);
115
if (new_plugin->argv == NULL){
120
char *copy_name = NULL;
121
if(name != NULL){
122
do {
123
copy_name = strdup(name);
124
} while(copy_name == NULL and errno == EINTR);
125
if(copy_name == NULL){
126
free(new_plugin);
127
return NULL;
128
}
129
}
130
131
*new_plugin = (plugin){ .name = copy_name,
132
.argc = 1,
133
.disabled = false,
134
.next = plugin_list };
135
136
do {
137
new_plugin->argv = malloc(sizeof(char *) * 2);
138
} while(new_plugin->argv == NULL and errno == EINTR);
139
if(new_plugin->argv == NULL){
140
free(copy_name);
116
141
free(new_plugin);
117
142
return NULL;
118
143
}
119
new_plugin->argv[0] = name;
144
new_plugin->argv[0] = copy_name;
120
145
new_plugin->argv[1] = NULL;
121
122
new_plugin->environ = malloc(sizeof(char *));
146
147
do {
148
new_plugin->environ = malloc(sizeof(char *));
149
} while(new_plugin->environ == NULL and errno == EINTR);
123
150
if(new_plugin->environ == NULL){
151
free(copy_name);
124
152
free(new_plugin->argv);
125
153
free(new_plugin);
126
154
return NULL;
127
155
}
128
156
new_plugin->environ[0] = NULL;
157
129
158
/* Append the new plugin to the list */
130
*plugin_list = new_plugin;
159
plugin_list = new_plugin;
131
160
return new_plugin;
132
161
}
133
162
135
164
static bool add_to_char_array(const char *new, char ***array,
136
165
int *len){
137
166
/* Resize the pointed-to array to hold one more pointer */
138
*array = realloc(*array, sizeof(char *)
139
* (size_t) ((*len) + 2));
167
do {
168
*array = realloc(*array, sizeof(char *)
169
* (size_t) ((*len) + 2));
170
} while(*array == NULL and errno == EINTR);
140
171
/* Malloc check */
141
172
if(*array == NULL){
142
173
return false;
143
174
}
144
175
/* Make a copy of the new string */
145
char *copy = strdup(new);
176
char *copy;
177
do {
178
copy = strdup(new);
179
} while(copy == NULL and errno == EINTR);
146
180
if(copy == NULL){
147
181
return false;
148
182
}
163
197
}
164
198
165
199
/* Add to a plugin's environment */
166
static bool add_environment(plugin *p, const char *def){
200
static bool add_environment(plugin *p, const char *def, bool replace){
167
201
if(p == NULL){
168
202
return false;
169
203
}
204
/* namelen = length of name of environment variable */
205
size_t namelen = (size_t)(strchrnul(def, '=') - def);
206
/* Search for this environment variable */
207
for(char **e = p->environ; *e != NULL; e++){
208
if(strncmp(*e, def, namelen + 1) == 0){
209
/* It already exists */
210
if(replace){
211
char *new;
212
do {
213
new = realloc(*e, strlen(def) + 1);
214
} while(new == NULL and errno == EINTR);
215
if(new == NULL){
216
return false;
217
}
218
*e = new;
219
strcpy(*e, def);
220
}
221
return true;
222
}
223
}
170
224
return add_to_char_array(def, &(p->environ), &(p->envc));
171
225
}
172
226
173
174
227
/*
175
228
* Based on the example in the GNU LibC manual chapter 13.13 "File
176
229
* Descriptor Flags".
177
* *Note File Descriptor Flags:(libc)Descriptor Flags.
230
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
178
231
*/
179
static int set_cloexec_flag(int fd)
180
{
181
int ret = fcntl(fd, F_GETFD, 0);
232
static int set_cloexec_flag(int fd){
233
int ret = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
182
234
/* If reading the flags failed, return error indication now. */
183
235
if(ret < 0){
184
236
return ret;
185
237
}
186
238
/* Store modified flag word in the descriptor. */
187
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
239
return TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD, ret | FD_CLOEXEC));
188
240
}
189
241
190
process *process_list = NULL;
191
242
192
/* Mark a process as completed when it exits, and save its exit
243
/* Mark processes as completed when they exit, and save their exit
193
244
status. */
194
void handle_sigchld(__attribute__((unused)) int sig){
195
process *proc = process_list;
196
int status;
197
pid_t pid = wait(&status);
198
if(pid == -1){
199
perror("wait");
200
return;
201
}
202
while(proc != NULL and proc->pid != pid){
203
proc = proc->next;
204
}
205
if(proc == NULL){
206
/* Process not found in process list */
207
return;
208
}
209
proc->status = status;
210
proc->completed = true;
245
static void handle_sigchld(__attribute__((unused)) int sig){
246
int old_errno = errno;
247
while(true){
248
plugin *proc = plugin_list;
249
int status;
250
pid_t pid = waitpid(-1, &status, WNOHANG);
251
if(pid == 0){
252
/* Only still running child processes */
253
break;
254
}
255
if(pid == -1){
256
if(errno == ECHILD){
257
/* No child processes */
258
break;
259
}
260
perror("waitpid");
261
}
262
263
/* A child exited, find it in process_list */
264
while(proc != NULL and proc->pid != pid){
265
proc = proc->next;
266
}
267
if(proc == NULL){
268
/* Process not found in process list */
269
continue;
270
}
271
proc->status = status;
272
proc->completed = 1;
273
}
274
errno = old_errno;
211
275
}
212
276
213
bool print_out_password(const char *buffer, size_t length){
277
/* Prints out a password to stdout */
278
static bool print_out_password(const char *buffer, size_t length){
214
279
ssize_t ret;
215
if(length>0 and buffer[length-1] == '\n'){
216
length--;
217
}
218
280
for(size_t written = 0; written < length; written += (size_t)ret){
219
281
ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
220
282
length - written));
225
287
return true;
226
288
}
227
289
228
char **add_to_argv(char **argv, int *argc, char *arg){
229
if (argv == NULL){
230
*argc = 1;
231
argv = malloc(sizeof(char*) * 2);
232
if(argv == NULL){
233
return NULL;
290
/* Removes and free a plugin from the plugin list */
291
static void free_plugin(plugin *plugin_node){
292
293
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
294
free(*arg);
295
}
296
free(plugin_node->argv);
297
for(char **env = plugin_node->environ; *env != NULL; env++){
298
free(*env);
299
}
300
free(plugin_node->environ);
301
free(plugin_node->buffer);
302
303
/* Removes the plugin from the singly-linked list */
304
if(plugin_node == plugin_list){
305
/* First one - simple */
306
plugin_list = plugin_list->next;
307
} else {
308
/* Second one or later */
309
for(plugin *p = plugin_list; p != NULL; p = p->next){
310
if(p->next == plugin_node){
311
p->next = plugin_node->next;
312
break;
313
}
234
314
}
235
argv[0] = NULL; /* Will be set to argv[0] in main before parsing */
236
argv[1] = NULL;
237
}
238
*argc += 1;
239
argv = realloc(argv, sizeof(char *)
240
* ((unsigned int) *argc + 1));
241
if(argv == NULL){
242
return NULL;
243
}
244
argv[*argc-1] = arg;
245
argv[*argc] = NULL;
246
return argv;
315
}
316
317
free(plugin_node);
318
}
319
320
static void free_plugin_list(void){
321
while(plugin_list != NULL){
322
free_plugin(plugin_list);
323
}
247
324
}
248
325
249
326
int main(int argc, char *argv[]){
250
const char *plugindir = "/lib/mandos/plugins.d";
251
const char *argfile = ARGFILE;
327
char *plugindir = NULL;
328
char *argfile = NULL;
252
329
FILE *conffp;
253
330
size_t d_name_len;
254
331
DIR *dir = NULL;
256
333
struct stat st;
257
334
fd_set rfds_all;
258
335
int ret, maxfd = 0;
336
ssize_t sret;
259
337
uid_t uid = 65534;
260
338
gid_t gid = 65534;
261
339
bool debug = false;
269
347
/* Establish a signal handler */
270
348
sigemptyset(&sigchld_action.sa_mask);
271
349
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
272
if(ret < 0){
350
if(ret == -1){
273
351
perror("sigaddset");
274
exit(EXIT_FAILURE);
352
exitstatus = EXIT_FAILURE;
353
goto fallback;
275
354
}
276
355
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
277
if(ret < 0){
356
if(ret == -1){
278
357
perror("sigaction");
279
exit(EXIT_FAILURE);
358
exitstatus = EXIT_FAILURE;
359
goto fallback;
280
360
}
281
361
282
362
/* The options we understand. */
284
364
{ .name = "global-options", .key = 'g',
285
365
.arg = "OPTION[,OPTION[,...]]",
286
366
.doc = "Options passed to all plugins" },
287
{ .name = "global-envs", .key = 'e',
367
{ .name = "global-env", .key = 'G',
288
368
.arg = "VAR=value",
289
369
.doc = "Environment variable passed to all plugins" },
290
370
{ .name = "options-for", .key = 'o',
291
371
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
292
372
.doc = "Options passed only to specified plugin" },
293
{ .name = "envs-for", .key = 'f',
373
{ .name = "env-for", .key = 'E',
294
374
.arg = "PLUGIN:ENV=value",
295
375
.doc = "Environment variable passed to specified plugin" },
296
376
{ .name = "disable", .key = 'd',
297
377
.arg = "PLUGIN",
298
378
.doc = "Disable a specific plugin", .group = 1 },
379
{ .name = "enable", .key = 'e',
380
.arg = "PLUGIN",
381
.doc = "Enable a specific plugin", .group = 1 },
299
382
{ .name = "plugin-dir", .key = 128,
300
383
.arg = "DIRECTORY",
301
384
.doc = "Specify a different plugin directory", .group = 2 },
302
{ .name = "userid", .key = 129,
303
.arg = "ID", .flags = 0,
304
.doc = "User ID the plugins will run as", .group = 2 },
305
{ .name = "groupid", .key = 130,
306
.arg = "ID", .flags = 0,
307
.doc = "Group ID the plugins will run as", .group = 2 },
308
{ .name = "debug", .key = 131,
309
.doc = "Debug mode", .group = 3 },
385
{ .name = "config-file", .key = 129,
386
.arg = "FILE",
387
.doc = "Specify a different configuration file", .group = 2 },
388
{ .name = "userid", .key = 130,
389
.arg = "ID", .flags = 0,
390
.doc = "User ID the plugins will run as", .group = 3 },
391
{ .name = "groupid", .key = 131,
392
.arg = "ID", .flags = 0,
393
.doc = "Group ID the plugins will run as", .group = 3 },
394
{ .name = "debug", .key = 132,
395
.doc = "Debug mode", .group = 4 },
310
396
{ .name = NULL }
311
397
};
312
398
313
error_t parse_opt (int key, char *arg, struct argp_state *state) {
314
/* Get the INPUT argument from `argp_parse', which we know is a
315
pointer to our plugin list pointer. */
316
plugin **plugins = state->input;
317
switch (key) {
318
case 'g':
319
if (arg != NULL){
320
char *p;
321
while((p = strsep(&arg, ",")) != NULL){
322
if(p[0] == '\0'){
399
error_t parse_opt(int key, char *arg, __attribute__((unused))
400
struct argp_state *state){
401
switch(key){
402
char *tmp;
403
intmax_t tmpmax;
404
case 'g': /* --global-options */
405
if(arg != NULL){
406
char *plugin_option;
407
while((plugin_option = strsep(&arg, ",")) != NULL){
408
if(plugin_option[0] == '\0'){
323
409
continue;
324
410
}
325
if(not add_argument(getplugin(NULL, plugins), p)){
411
if(not add_argument(getplugin(NULL), plugin_option)){
326
412
perror("add_argument");
327
413
return ARGP_ERR_UNKNOWN;
328
414
}
329
415
}
330
416
}
331
417
break;
332
case 'e':
418
case 'G': /* --global-env */
333
419
if(arg == NULL){
334
420
break;
335
421
}
336
{
337
char *envdef = strdup(arg);
338
if(envdef == NULL){
339
break;
340
}
341
if(not add_environment(getplugin(NULL, plugins), envdef)){
342
perror("add_environment");
343
}
422
if(not add_environment(getplugin(NULL), arg, true)){
423
perror("add_environment");
344
424
}
345
425
break;
346
case 'o':
347
if (arg != NULL){
348
char *p_name = strsep(&arg, ":");
349
if(p_name[0] == '\0'){
350
break;
351
}
352
char *opt = strsep(&arg, ":");
353
if(opt[0] == '\0'){
354
break;
355
}
356
if(opt != NULL){
357
char *p;
358
while((p = strsep(&opt, ",")) != NULL){
359
if(p[0] == '\0'){
360
continue;
361
}
362
if(not add_argument(getplugin(p_name, plugins), p)){
363
perror("add_argument");
364
return ARGP_ERR_UNKNOWN;
365
}
426
case 'o': /* --options-for */
427
if(arg != NULL){
428
char *plugin_name = strsep(&arg, ":");
429
if(plugin_name[0] == '\0'){
430
break;
431
}
432
char *plugin_option;
433
while((plugin_option = strsep(&arg, ",")) != NULL){
434
if(not add_argument(getplugin(plugin_name), plugin_option)){
435
perror("add_argument");
436
return ARGP_ERR_UNKNOWN;
366
437
}
367
438
}
368
439
}
369
440
break;
370
case 'f':
441
case 'E': /* --env-for */
371
442
if(arg == NULL){
372
443
break;
373
444
}
376
447
if(envdef == NULL){
377
448
break;
378
449
}
379
char *p_name = strndup(arg, (size_t) (envdef-arg));
380
if(p_name == NULL){
381
break;
382
}
383
envdef++;
384
if(not add_environment(getplugin(p_name, plugins), envdef)){
450
*envdef = '\0';
451
if(not add_environment(getplugin(arg), envdef+1, true)){
385
452
perror("add_environment");
386
453
}
387
454
}
388
455
break;
389
case 'd':
390
if (arg != NULL){
391
plugin *p = getplugin(arg, plugins);
456
case 'd': /* --disable */
457
if(arg != NULL){
458
plugin *p = getplugin(arg);
392
459
if(p == NULL){
393
460
return ARGP_ERR_UNKNOWN;
394
461
}
395
462
p->disabled = true;
396
463
}
397
464
break;
398
case 128:
399
plugindir = arg;
400
break;
401
case 129:
402
uid = (uid_t)strtol(arg, NULL, 10);
403
break;
404
case 130:
405
gid = (gid_t)strtol(arg, NULL, 10);
406
break;
407
case 131:
465
case 'e': /* --enable */
466
if(arg != NULL){
467
plugin *p = getplugin(arg);
468
if(p == NULL){
469
return ARGP_ERR_UNKNOWN;
470
}
471
p->disabled = false;
472
}
473
break;
474
case 128: /* --plugin-dir */
475
free(plugindir);
476
plugindir = strdup(arg);
477
if(plugindir == NULL){
478
perror("strdup");
479
}
480
break;
481
case 129: /* --config-file */
482
/* This is already done by parse_opt_config_file() */
483
break;
484
case 130: /* --userid */
485
errno = 0;
486
tmpmax = strtoimax(arg, &tmp, 10);
487
if(errno != 0 or tmp == arg or *tmp != '\0'
488
or tmpmax != (uid_t)tmpmax){
489
fprintf(stderr, "Bad user ID number: \"%s\", using %"
490
PRIdMAX "\n", arg, (intmax_t)uid);
491
} else {
492
uid = (uid_t)tmpmax;
493
}
494
break;
495
case 131: /* --groupid */
496
errno = 0;
497
tmpmax = strtoimax(arg, &tmp, 10);
498
if(errno != 0 or tmp == arg or *tmp != '\0'
499
or tmpmax != (gid_t)tmpmax){
500
fprintf(stderr, "Bad group ID number: \"%s\", using %"
501
PRIdMAX "\n", arg, (intmax_t)gid);
502
} else {
503
gid = (gid_t)tmpmax;
504
}
505
break;
506
case 132: /* --debug */
408
507
debug = true;
409
508
break;
410
case ARGP_KEY_ARG:
411
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
412
break;
413
case ARGP_KEY_END:
414
break;
415
default:
416
return ARGP_ERR_UNKNOWN;
417
}
418
return 0;
419
}
420
421
plugin *plugin_list = NULL;
422
423
struct argp argp = { .options = options, .parser = parse_opt,
424
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
509
/*
510
* When adding more options before this line, remember to also add a
511
* "case" to the "parse_opt_config_file" function below.
512
*/
513
case ARGP_KEY_ARG:
514
/* Cryptsetup always passes an argument, which is an empty
515
string if "none" was specified in /etc/crypttab. So if
516
argument was empty, we ignore it silently. */
517
if(arg[0] != '\0'){
518
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
519
}
520
break;
521
case ARGP_KEY_END:
522
break;
523
default:
524
return ARGP_ERR_UNKNOWN;
525
}
526
return 0;
527
}
528
529
/* This option parser is the same as parse_opt() above, except it
530
ignores everything but the --config-file option. */
531
error_t parse_opt_config_file(int key, char *arg,
532
__attribute__((unused))
533
struct argp_state *state){
534
switch(key){
535
case 'g': /* --global-options */
536
case 'G': /* --global-env */
537
case 'o': /* --options-for */
538
case 'E': /* --env-for */
539
case 'd': /* --disable */
540
case 'e': /* --enable */
541
case 128: /* --plugin-dir */
542
break;
543
case 129: /* --config-file */
544
free(argfile);
545
argfile = strdup(arg);
546
if(argfile == NULL){
547
perror("strdup");
548
}
549
break;
550
case 130: /* --userid */
551
case 131: /* --groupid */
552
case 132: /* --debug */
553
case ARGP_KEY_ARG:
554
case ARGP_KEY_END:
555
break;
556
default:
557
return ARGP_ERR_UNKNOWN;
558
}
559
return 0;
560
}
561
562
struct argp argp = { .options = options,
563
.parser = parse_opt_config_file,
564
.args_doc = "",
425
565
.doc = "Mandos plugin runner -- Run plugins" };
426
566
427
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
428
if (ret == ARGP_ERR_UNKNOWN){
567
/* Parse using parse_opt_config_file() in order to get the custom
568
config file location, if any. */
569
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
570
if(ret == ARGP_ERR_UNKNOWN){
429
571
fprintf(stderr, "Unknown error while parsing arguments\n");
430
572
exitstatus = EXIT_FAILURE;
431
goto end;
432
}
433
434
conffp = fopen(argfile, "r");
573
goto fallback;
574
}
575
576
/* Reset to the normal argument parser */
577
argp.parser = parse_opt;
578
579
/* Open the configfile if available */
580
if(argfile == NULL){
581
conffp = fopen(AFILE, "r");
582
} else {
583
conffp = fopen(argfile, "r");
584
}
435
585
if(conffp != NULL){
436
586
char *org_line = NULL;
587
char *p, *arg, *new_arg, *line;
437
588
size_t size = 0;
438
ssize_t sret;
439
char *p, *arg, *new_arg, *line;
440
589
const char whitespace_delims[] = " \r\t\f\v\n";
441
590
const char comment_delim[] = "#";
442
591
592
custom_argc = 1;
593
custom_argv = malloc(sizeof(char*) * 2);
594
if(custom_argv == NULL){
595
perror("malloc");
596
exitstatus = EXIT_FAILURE;
597
goto fallback;
598
}
599
custom_argv[0] = argv[0];
600
custom_argv[1] = NULL;
601
602
/* for each line in the config file, strip whitespace and ignore
603
commented text */
443
604
while(true){
444
605
sret = getline(&org_line, &size, conffp);
445
606
if(sret == -1){
446
607
break;
447
608
}
448
609
449
610
line = org_line;
450
611
arg = strsep(&line, comment_delim);
451
612
while((p = strsep(&arg, whitespace_delims)) != NULL){
453
614
continue;
454
615
}
455
616
new_arg = strdup(p);
456
custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);
457
if (custom_argv == NULL){
458
perror("add_to_argv");
459
exitstatus = EXIT_FAILURE;
460
goto end;
461
}
617
if(new_arg == NULL){
618
perror("strdup");
619
exitstatus = EXIT_FAILURE;
620
free(org_line);
621
goto fallback;
622
}
623
624
custom_argc += 1;
625
custom_argv = realloc(custom_argv, sizeof(char *)
626
* ((unsigned int) custom_argc + 1));
627
if(custom_argv == NULL){
628
perror("realloc");
629
exitstatus = EXIT_FAILURE;
630
free(org_line);
631
goto fallback;
632
}
633
custom_argv[custom_argc-1] = new_arg;
634
custom_argv[custom_argc] = NULL;
462
635
}
463
636
}
637
do {
638
ret = fclose(conffp);
639
} while(ret == EOF and errno == EINTR);
640
if(ret == EOF){
641
perror("fclose");
642
exitstatus = EXIT_FAILURE;
643
goto fallback;
644
}
464
645
free(org_line);
465
} else{
646
} else {
466
647
/* Check for harmful errors and go to fallback. Other errors might
467
648
not affect opening plugins */
468
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
649
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
469
650
perror("fopen");
470
651
exitstatus = EXIT_FAILURE;
471
goto end;
652
goto fallback;
472
653
}
473
654
}
474
655
/* If there was any arguments from configuration file,
656
pass them to parser as command arguments */
475
657
if(custom_argv != NULL){
476
custom_argv[0] = argv[0];
477
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
478
if (ret == ARGP_ERR_UNKNOWN){
658
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
659
0, NULL);
660
if(ret == ARGP_ERR_UNKNOWN){
479
661
fprintf(stderr, "Unknown error while parsing arguments\n");
480
662
exitstatus = EXIT_FAILURE;
481
goto end;
663
goto fallback;
482
664
}
483
665
}
484
666
667
/* Parse actual command line arguments, to let them override the
668
config file */
669
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
670
if(ret == ARGP_ERR_UNKNOWN){
671
fprintf(stderr, "Unknown error while parsing arguments\n");
672
exitstatus = EXIT_FAILURE;
673
goto fallback;
674
}
675
485
676
if(debug){
486
677
for(plugin *p = plugin_list; p != NULL; p=p->next){
487
678
fprintf(stderr, "Plugin: %s has %d arguments\n",
489
680
for(char **a = p->argv; *a != NULL; a++){
490
681
fprintf(stderr, "\tArg: %s\n", *a);
491
682
}
492
fprintf(stderr, "...and %u environment variables\n", p->envc);
683
fprintf(stderr, "...and %d environment variables\n", p->envc);
493
684
for(char **a = p->environ; *a != NULL; a++){
494
685
fprintf(stderr, "\t%s\n", *a);
495
686
}
496
687
}
497
688
}
498
689
690
/* Strip permissions down to nobody */
691
setgid(gid);
692
if(ret == -1){
693
perror("setgid");
694
}
499
695
ret = setuid(uid);
500
if (ret == -1){
696
if(ret == -1){
501
697
perror("setuid");
502
698
}
503
699
504
setgid(gid);
505
if (ret == -1){
506
perror("setgid");
700
if(plugindir == NULL){
701
dir = opendir(PDIR);
702
} else {
703
dir = opendir(plugindir);
507
704
}
508
705
509
dir = opendir(plugindir);
510
706
if(dir == NULL){
511
707
perror("Could not open plugin dir");
512
708
exitstatus = EXIT_FAILURE;
513
goto end;
709
goto fallback;
514
710
}
515
711
516
712
/* Set the FD_CLOEXEC flag on the directory, if possible */
521
717
if(ret < 0){
522
718
perror("set_cloexec_flag");
523
719
exitstatus = EXIT_FAILURE;
524
goto end;
720
goto fallback;
525
721
}
526
722
}
527
723
}
528
724
529
725
FD_ZERO(&rfds_all);
530
726
727
/* Read and execute any executable in the plugin directory*/
531
728
while(true){
532
dirst = readdir(dir);
729
do {
730
dirst = readdir(dir);
731
} while(dirst == NULL and errno == EINTR);
533
732
534
// All directory entries have been processed
733
/* All directory entries have been processed */
535
734
if(dirst == NULL){
536
if (errno == EBADF){
735
if(errno == EBADF){
537
736
perror("readdir");
538
737
exitstatus = EXIT_FAILURE;
539
goto end;
738
goto fallback;
540
739
}
541
740
break;
542
741
}
543
742
544
743
d_name_len = strlen(dirst->d_name);
545
744
546
// Ignore dotfiles, backup files and other junk
745
/* Ignore dotfiles, backup files and other junk */
547
746
{
548
747
bool bad_name = false;
549
748
551
750
552
751
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
553
752
".dpkg-old",
753
".dpkg-bak",
554
754
".dpkg-divert", NULL };
555
755
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
556
756
size_t pre_len = strlen(*pre);
564
764
break;
565
765
}
566
766
}
567
568
767
if(bad_name){
569
768
continue;
570
769
}
571
572
770
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
573
771
size_t suf_len = strlen(*suf);
574
772
if((d_name_len >= suf_len)
587
785
continue;
588
786
}
589
787
}
590
788
591
789
char *filename;
592
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
790
if(plugindir == NULL){
791
ret = TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
792
dirst->d_name));
793
} else {
794
ret = TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s", plugindir,
795
dirst->d_name));
796
}
593
797
if(ret < 0){
594
798
perror("asprintf");
595
799
continue;
596
800
}
597
801
598
ret = stat(filename, &st);
599
if (ret == -1){
802
ret = TEMP_FAILURE_RETRY(stat(filename, &st));
803
if(ret == -1){
600
804
perror("stat");
601
805
free(filename);
602
806
continue;
603
807
}
604
808
605
if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
809
/* Ignore non-executable files */
810
if(not S_ISREG(st.st_mode)
811
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
606
812
if(debug){
607
813
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
608
814
" with bad type or mode\n", filename);
610
816
free(filename);
611
817
continue;
612
818
}
613
plugin *p = getplugin(dirst->d_name, &plugin_list);
819
820
plugin *p = getplugin(dirst->d_name);
614
821
if(p == NULL){
615
822
perror("getplugin");
616
823
free(filename);
626
833
}
627
834
{
628
835
/* Add global arguments to argument list for this plugin */
629
plugin *g = getplugin(NULL, &plugin_list);
836
plugin *g = getplugin(NULL);
630
837
if(g != NULL){
631
838
for(char **a = g->argv + 1; *a != NULL; a++){
632
839
if(not add_argument(p, *a)){
635
842
}
636
843
/* Add global environment variables */
637
844
for(char **e = g->environ; *e != NULL; e++){
638
if(not add_environment(p, *e)){
845
if(not add_environment(p, *e, false)){
639
846
perror("add_environment");
640
847
}
641
848
}
646
853
process, too. */
647
854
if(p->environ[0] != NULL){
648
855
for(char **e = environ; *e != NULL; e++){
649
char *copy = strdup(*e);
650
if(copy == NULL){
651
perror("strdup");
652
continue;
653
}
654
if(not add_environment(p, copy)){
856
if(not add_environment(p, *e, false)){
655
857
perror("add_environment");
656
858
}
657
859
}
658
860
}
659
861
660
int pipefd[2];
661
ret = pipe(pipefd);
662
if (ret == -1){
862
int pipefd[2];
863
ret = TEMP_FAILURE_RETRY(pipe(pipefd));
864
if(ret == -1){
663
865
perror("pipe");
664
866
exitstatus = EXIT_FAILURE;
665
goto end;
867
goto fallback;
666
868
}
869
/* Ask OS to automatic close the pipe on exec */
667
870
ret = set_cloexec_flag(pipefd[0]);
668
871
if(ret < 0){
669
872
perror("set_cloexec_flag");
670
873
exitstatus = EXIT_FAILURE;
671
goto end;
874
goto fallback;
672
875
}
673
876
ret = set_cloexec_flag(pipefd[1]);
674
877
if(ret < 0){
675
878
perror("set_cloexec_flag");
676
879
exitstatus = EXIT_FAILURE;
677
goto end;
880
goto fallback;
678
881
}
679
882
/* Block SIGCHLD until process is safely in process list */
680
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
883
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
884
&sigchld_action.sa_mask,
885
NULL));
681
886
if(ret < 0){
682
887
perror("sigprocmask");
683
888
exitstatus = EXIT_FAILURE;
684
goto end;
889
goto fallback;
685
890
}
686
// Starting a new process to be watched
687
pid_t pid = fork();
891
/* Starting a new process to be watched */
892
pid_t pid;
893
do {
894
pid = fork();
895
} while(pid == -1 and errno == EINTR);
688
896
if(pid == -1){
689
897
perror("fork");
690
898
exitstatus = EXIT_FAILURE;
691
goto end;
899
goto fallback;
692
900
}
693
901
if(pid == 0){
694
902
/* this is the child process */
697
905
perror("sigaction");
698
906
_exit(EXIT_FAILURE);
699
907
}
700
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
908
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
701
909
if(ret < 0){
702
910
perror("sigprocmask");
703
911
_exit(EXIT_FAILURE);
704
912
}
705
913
706
914
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
707
915
if(ret == -1){
708
916
perror("dup2");
727
935
}
728
936
/* no return */
729
937
}
730
/* parent process */
938
/* Parent process */
939
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
940
pipe */
731
941
free(filename);
732
close(pipefd[1]); /* close unused write end of pipe */
733
process *new_process = malloc(sizeof(process));
734
if (new_process == NULL){
735
perror("malloc");
736
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
942
plugin *new_plugin = getplugin(dirst->d_name);
943
if(new_plugin == NULL){
944
perror("getplugin");
945
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
946
&sigchld_action.sa_mask,
947
NULL));
737
948
if(ret < 0){
738
perror("sigprocmask");
949
perror("sigprocmask");
739
950
}
740
951
exitstatus = EXIT_FAILURE;
741
goto end;
952
goto fallback;
742
953
}
743
954
744
*new_process = (struct process){ .pid = pid,
745
.fd = pipefd[0],
746
.next = process_list };
747
// List handling
748
process_list = new_process;
955
new_plugin->pid = pid;
956
new_plugin->fd = pipefd[0];
957
749
958
/* Unblock SIGCHLD so signal handler can be run if this process
750
959
has already completed */
751
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
960
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
961
&sigchld_action.sa_mask,
962
NULL));
752
963
if(ret < 0){
753
964
perror("sigprocmask");
754
965
exitstatus = EXIT_FAILURE;
755
goto end;
756
}
757
758
FD_SET(new_process->fd, &rfds_all);
759
760
if (maxfd < new_process->fd){
761
maxfd = new_process->fd;
762
}
763
764
}
765
766
/* Free the plugin list */
767
for(plugin *next; plugin_list != NULL; plugin_list = next){
768
next = plugin_list->next;
769
free(plugin_list->argv);
770
if(plugin_list->environ[0] != NULL){
771
for(char **e = plugin_list->environ; *e != NULL; e++){
772
free(*e);
773
}
774
}
775
free(plugin_list);
776
}
777
778
closedir(dir);
966
goto fallback;
967
}
968
969
FD_SET(new_plugin->fd, &rfds_all);
970
971
if(maxfd < new_plugin->fd){
972
maxfd = new_plugin->fd;
973
}
974
}
975
976
TEMP_FAILURE_RETRY(closedir(dir));
779
977
dir = NULL;
780
781
if (process_list == NULL){
782
fprintf(stderr, "No plugin processes started. Incorrect plugin"
783
" directory?\n");
784
process_list = NULL;
978
free_plugin(getplugin(NULL));
979
980
for(plugin *p = plugin_list; p != NULL; p = p->next){
981
if(p->pid != 0){
982
break;
983
}
984
if(p->next == NULL){
985
fprintf(stderr, "No plugin processes started. Incorrect plugin"
986
" directory?\n");
987
free_plugin_list();
988
}
785
989
}
786
while(process_list){
990
991
/* Main loop while running plugins exist */
992
while(plugin_list){
787
993
fd_set rfds = rfds_all;
788
994
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
789
if (select_ret == -1){
995
if(select_ret == -1 and errno != EINTR){
790
996
perror("select");
791
997
exitstatus = EXIT_FAILURE;
792
goto end;
998
goto fallback;
793
999
}
794
1000
/* OK, now either a process completed, or something can be read
795
1001
from one of them */
796
for(process *proc = process_list; proc ; proc = proc->next){
1002
for(plugin *proc = plugin_list; proc != NULL;){
797
1003
/* Is this process completely done? */
798
if(proc->eof and proc->completed){
1004
if(proc->completed and proc->eof){
799
1005
/* Only accept the plugin output if it exited cleanly */
800
1006
if(not WIFEXITED(proc->status)
801
1007
or WEXITSTATUS(proc->status) != 0){
802
1008
/* Bad exit by plugin */
1009
803
1010
if(debug){
804
1011
if(WIFEXITED(proc->status)){
805
fprintf(stderr, "Plugin %u exited with status %d\n",
806
(unsigned int) (proc->pid),
1012
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1013
" status %d\n", proc->name,
1014
(intmax_t) (proc->pid),
807
1015
WEXITSTATUS(proc->status));
808
} else if(WIFSIGNALED(proc->status)) {
809
fprintf(stderr, "Plugin %u killed by signal %d\n",
810
(unsigned int) (proc->pid),
811
WTERMSIG(proc->status));
1016
} else if(WIFSIGNALED(proc->status)){
1017
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1018
" signal %d: %s\n", proc->name,
1019
(intmax_t) (proc->pid),
1020
WTERMSIG(proc->status),
1021
strsignal(WTERMSIG(proc->status)));
812
1022
} else if(WCOREDUMP(proc->status)){
813
fprintf(stderr, "Plugin %d dumped core\n",
814
(unsigned int) (proc->pid));
1023
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1024
" core\n", proc->name, (intmax_t) (proc->pid));
815
1025
}
816
1026
}
1027
817
1028
/* Remove the plugin */
818
1029
FD_CLR(proc->fd, &rfds_all);
1030
819
1031
/* Block signal while modifying process_list */
820
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1032
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1033
&sigchld_action.sa_mask,
1034
NULL));
821
1035
if(ret < 0){
822
1036
perror("sigprocmask");
823
1037
exitstatus = EXIT_FAILURE;
824
goto end;
825
}
826
/* Delete this process entry from the list */
827
if(process_list == proc){
828
/* First one - simple */
829
process_list = proc->next;
830
} else {
831
/* Second one or later */
832
for(process *p = process_list; p != NULL; p = p->next){
833
if(p->next == proc){
834
p->next = proc->next;
835
break;
836
}
837
}
838
}
1038
goto fallback;
1039
}
1040
1041
plugin *next_plugin = proc->next;
1042
free_plugin(proc);
1043
proc = next_plugin;
1044
839
1045
/* We are done modifying process list, so unblock signal */
840
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
841
NULL);
1046
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1047
&sigchld_action.sa_mask,
1048
NULL));
842
1049
if(ret < 0){
843
1050
perror("sigprocmask");
844
}
845
free(proc->buffer);
846
free(proc);
847
/* We deleted this process from the list, so we can't go
848
proc->next. Therefore, start over from the beginning of
849
the process list */
850
break;
1051
exitstatus = EXIT_FAILURE;
1052
goto fallback;
1053
}
1054
1055
if(plugin_list == NULL){
1056
break;
1057
}
1058
1059
continue;
851
1060
}
1061
852
1062
/* This process exited nicely, so print its buffer */
853
854
bool bret = print_out_password(proc->buffer, proc->buffer_length);
1063
1064
bool bret = print_out_password(proc->buffer,
1065
proc->buffer_length);
855
1066
if(not bret){
856
1067
perror("print_out_password");
857
1068
exitstatus = EXIT_FAILURE;
858
1069
}
859
goto end;
1070
goto fallback;
860
1071
}
1072
861
1073
/* This process has not completed. Does it have any output? */
862
1074
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
863
1075
/* This process had nothing to say at this time */
1076
proc = proc->next;
864
1077
continue;
865
1078
}
866
1079
/* Before reading, make the process' data buffer large enough */
867
1080
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
868
1081
proc->buffer = realloc(proc->buffer, proc->buffer_size
869
1082
+ (size_t) BUFFER_SIZE);
870
if (proc->buffer == NULL){
1083
if(proc->buffer == NULL){
871
1084
perror("malloc");
872
1085
exitstatus = EXIT_FAILURE;
873
goto end;
1086
goto fallback;
874
1087
}
875
1088
proc->buffer_size += BUFFER_SIZE;
876
1089
}
877
1090
/* Read from the process */
878
ret = read(proc->fd, proc->buffer + proc->buffer_length,
879
BUFFER_SIZE);
880
if(ret < 0){
1091
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1092
proc->buffer
1093
+ proc->buffer_length,
1094
BUFFER_SIZE));
1095
if(sret < 0){
881
1096
/* Read error from this process; ignore the error */
1097
proc = proc->next;
882
1098
continue;
883
1099
}
884
if(ret == 0){
1100
if(sret == 0){
885
1101
/* got EOF */
886
1102
proc->eof = true;
887
1103
} else {
888
proc->buffer_length += (size_t) ret;
1104
proc->buffer_length += (size_t) sret;
889
1105
}
890
1106
}
891
1107
}
892
893
894
end:
895
896
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
897
/* Fallback if all plugins failed, none are found or an error occured */
1108
1109
1110
fallback:
1111
1112
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1113
/* Fallback if all plugins failed, none are found or an error
1114
occured */
898
1115
bool bret;
899
1116
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
900
1117
char *passwordbuffer = getpass("Password: ");
901
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1118
size_t len = strlen(passwordbuffer);
1119
/* Strip trailing newline */
1120
if(len > 0 and passwordbuffer[len-1] == '\n'){
1121
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1122
len--;
1123
}
1124
bret = print_out_password(passwordbuffer, len);
902
1125
if(not bret){
903
1126
perror("print_out_password");
904
1127
exitstatus = EXIT_FAILURE;
905
goto end;
906
1128
}
907
1129
}
908
1130
909
1131
/* Restore old signal handler */
910
sigaction(SIGCHLD, &old_sigchld_action, NULL);
911
912
free(custom_argv);
913
914
/* Free the plugin list */
915
for(plugin *next; plugin_list != NULL; plugin_list = next){
916
next = plugin_list->next;
917
free(plugin_list->argv);
918
if(plugin_list->environ[0] != NULL){
919
for(char **e = plugin_list->environ; *e != NULL; e++){
920
free(*e);
921
}
1132
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1133
if(ret == -1){
1134
perror("sigaction");
1135
exitstatus = EXIT_FAILURE;
1136
}
1137
1138
if(custom_argv != NULL){
1139
for(char **arg = custom_argv+1; *arg != NULL; arg++){
1140
free(*arg);
922
1141
}
923
free(plugin_list->environ);
924
free(plugin_list);
1142
free(custom_argv);
925
1143
}
926
1144
927
1145
if(dir != NULL){
928
1146
closedir(dir);
929
1147
}
930
1148
931
/* Free the process list and kill the processes */
932
for(process *next; process_list != NULL; process_list = next){
933
next = process_list->next;
934
close(process_list->fd);
935
ret = kill(process_list->pid, SIGTERM);
936
if(ret == -1 and errno != ESRCH){
937
/* set-uid proccesses migth not get closed */
938
perror("kill");
1149
/* Kill the processes */
1150
for(plugin *p = plugin_list; p != NULL; p = p->next){
1151
if(p->pid != 0){
1152
close(p->fd);
1153
ret = kill(p->pid, SIGTERM);
1154
if(ret == -1 and errno != ESRCH){
1155
/* Set-uid proccesses might not get closed */
1156
perror("kill");
1157
}
939
1158
}
940
free(process_list->buffer);
941
free(process_list);
942
1159
}
943
1160
944
1161
/* Wait for any remaining child processes to terminate */
945
do{
1162
do {
946
1163
ret = wait(NULL);
947
1164
} while(ret >= 0);
948
1165
if(errno != ECHILD){
949
1166
perror("wait");
950
1167
}
951
1168
1169
free_plugin_list();
1170
1171
free(plugindir);
1172
free(argfile);
1173
952
1174
return exitstatus;
953
1175
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0