To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to plugin-runner.c
- browse files at revision 24.1.62
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.62
- Committer: Björn Påhlsson
- Date: 2008-08-24 09:39:06 UTC
- mfrom: (97 mandos)
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 99.
- Revision ID: belorn@braxen-20080824093906-eg4koyxsg9rc9qng
merge + small bugfix
- files added:
- plugins.d/usplash
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugins.d/mandos-client.c => plugins.d/password-request.c
- plugins.d/mandos-client.xml => plugins.d/password-request.xml
- files modified:
- Makefile
added
removed
plugin-runner.c
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
5
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
7
6
*
8
7
* This program is free software: you can redistribute it and/or
9
8
* modify it under the terms of the GNU General Public License as
23
22
*/
24
23
25
24
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
asprintf(), O_CLOEXEC */
25
asprintf() */
27
26
#include <stddef.h> /* size_t, NULL */
28
27
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
28
EXIT_SUCCESS, realloc() */
30
29
#include <stdbool.h> /* bool, true, false */
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, fdopendir(), stat(), struct
30
#include <stdio.h> /* perror, popen(), fileno(),
31
fprintf(), stderr, STDOUT_FILENO */
32
#include <sys/types.h> /* DIR, opendir(), stat(), struct
34
33
stat, waitpid(), WIFEXITED(),
35
34
WEXITSTATUS(), wait(), pid_t,
36
35
uid_t, gid_t, getuid(), getgid(),
38
37
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
39
38
FD_SET(), FD_ISSET(), FD_CLR */
40
39
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
WEXITSTATUS(), WTERMSIG(),
42
WCOREDUMP() */
40
WEXITSTATUS() */
43
41
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
44
42
#include <iso646.h> /* and, or, not */
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
43
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
44
readdir(), closedir(), dirfd() */
47
45
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
48
46
fcntl(), setuid(), setgid(),
49
47
F_GETFD, F_SETFD, FD_CLOEXEC,
50
48
access(), pipe(), fork(), close()
51
dup2(), STDOUT_FILENO, _exit(),
49
dup2, STDOUT_FILENO, _exit(),
52
50
execv(), write(), read(),
53
51
close() */
54
52
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
55
53
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal() */
54
#include <string.h> /* strsep, strlen(), asprintf() */
58
55
#include <errno.h> /* errno */
59
56
#include <argp.h> /* struct argp_option, struct
60
57
argp_state, struct argp,
61
58
argp_parse(), ARGP_ERR_UNKNOWN,
62
ARGP_KEY_END, ARGP_KEY_ARG,
63
error_t */
59
ARGP_KEY_END, ARGP_KEY_ARG, error_t */
64
60
#include <signal.h> /* struct sigaction, sigemptyset(),
65
61
sigaddset(), sigaction(),
66
62
sigprocmask(), SIG_BLOCK, SIGCHLD,
67
SIG_UNBLOCK, kill(), sig_atomic_t
68
*/
63
SIG_UNBLOCK, kill() */
69
64
#include <errno.h> /* errno, EBADF */
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
71
65
72
66
#define BUFFER_SIZE 256
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;
67
#define ARGFILE "/conf/conf.d/mandos/plugin-runner.conf"
68
69
const char *argp_program_version = "plugin-runner 1.0";
78
70
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
79
71
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
80
86
typedef struct plugin{
81
87
char *name; /* can be NULL or any plugin name */
82
88
char **argv;
84
90
char **environ;
85
91
int envc;
86
92
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;
97
93
struct plugin *next;
98
94
} plugin;
99
95
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))){
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))){
109
100
return p;
110
101
}
111
102
}
112
103
/* Create a new plugin */
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){
104
plugin *new_plugin = malloc(sizeof(plugin));
105
if (new_plugin == NULL){
118
106
return NULL;
119
107
}
120
108
char *copy_name = NULL;
121
109
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){
110
copy_name = strdup(name);
111
}
112
if(copy_name == NULL){
113
return NULL;
114
}
115
116
*new_plugin = (plugin) { .name = copy_name,
117
.argc = 1,
118
.envc = 0,
119
.disabled = false,
120
.next = *plugin_list };
121
122
new_plugin->argv = malloc(sizeof(char *) * 2);
123
if (new_plugin->argv == NULL){
140
124
free(copy_name);
141
125
free(new_plugin);
142
126
return NULL;
143
127
}
144
128
new_plugin->argv[0] = copy_name;
145
129
new_plugin->argv[1] = NULL;
146
147
do {
148
new_plugin->environ = malloc(sizeof(char *));
149
} while(new_plugin->environ == NULL and errno == EINTR);
130
131
new_plugin->environ = malloc(sizeof(char *));
150
132
if(new_plugin->environ == NULL){
151
133
free(copy_name);
152
134
free(new_plugin->argv);
154
136
return NULL;
155
137
}
156
138
new_plugin->environ[0] = NULL;
157
158
139
/* Append the new plugin to the list */
159
plugin_list = new_plugin;
140
*plugin_list = new_plugin;
160
141
return new_plugin;
161
142
}
162
143
164
145
static bool add_to_char_array(const char *new, char ***array,
165
146
int *len){
166
147
/* Resize the pointed-to array to hold one more pointer */
167
do {
168
*array = realloc(*array, sizeof(char *)
169
* (size_t) ((*len) + 2));
170
} while(*array == NULL and errno == EINTR);
148
*array = realloc(*array, sizeof(char *)
149
* (size_t) ((*len) + 2));
171
150
/* Malloc check */
172
151
if(*array == NULL){
173
152
return false;
174
153
}
175
154
/* Make a copy of the new string */
176
char *copy;
177
do {
178
copy = strdup(new);
179
} while(copy == NULL and errno == EINTR);
155
char *copy = strdup(new);
180
156
if(copy == NULL){
181
157
return false;
182
158
}
197
173
}
198
174
199
175
/* Add to a plugin's environment */
200
static bool add_environment(plugin *p, const char *def, bool replace){
176
static bool add_environment(plugin *p, const char *def){
201
177
if(p == NULL){
202
178
return false;
203
179
}
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
}
224
180
return add_to_char_array(def, &(p->environ), &(p->envc));
225
181
}
226
182
183
227
184
/*
228
185
* Based on the example in the GNU LibC manual chapter 13.13 "File
229
186
* Descriptor Flags".
230
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
187
* *Note File Descriptor Flags:(libc)Descriptor Flags.
231
188
*/
232
static int set_cloexec_flag(int fd){
233
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
189
static int set_cloexec_flag(int fd)
190
{
191
int ret = fcntl(fd, F_GETFD, 0);
234
192
/* If reading the flags failed, return error indication now. */
235
193
if(ret < 0){
236
194
return ret;
237
195
}
238
196
/* Store modified flag word in the descriptor. */
239
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
240
ret | FD_CLOEXEC));
197
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
241
198
}
242
199
200
process *process_list = NULL;
243
201
244
/* Mark processes as completed when they exit, and save their exit
202
/* Mark a process as completed when it exits, and save its exit
245
203
status. */
246
static void handle_sigchld(__attribute__((unused)) int sig){
247
int old_errno = errno;
248
while(true){
249
plugin *proc = plugin_list;
250
int status;
251
pid_t pid = waitpid(-1, &status, WNOHANG);
252
if(pid == 0){
253
/* Only still running child processes */
254
break;
255
}
256
if(pid == -1){
257
if(errno == ECHILD){
258
/* No child processes */
259
break;
260
}
261
perror("waitpid");
262
}
263
264
/* A child exited, find it in process_list */
265
while(proc != NULL and proc->pid != pid){
266
proc = proc->next;
267
}
268
if(proc == NULL){
269
/* Process not found in process list */
270
continue;
271
}
272
proc->status = status;
273
proc->completed = 1;
274
}
275
errno = old_errno;
204
void handle_sigchld(__attribute__((unused)) int sig){
205
process *proc = process_list;
206
int status;
207
pid_t pid = wait(&status);
208
if(pid == -1){
209
perror("wait");
210
return;
211
}
212
while(proc != NULL and proc->pid != pid){
213
proc = proc->next;
214
}
215
if(proc == NULL){
216
/* Process not found in process list */
217
return;
218
}
219
proc->status = status;
220
proc->completed = true;
276
221
}
277
222
278
/* Prints out a password to stdout */
279
static bool print_out_password(const char *buffer, size_t length){
223
bool print_out_password(const char *buffer, size_t length){
280
224
ssize_t ret;
225
if(length>0 and buffer[length-1] == '\n'){
226
length--;
227
}
281
228
for(size_t written = 0; written < length; written += (size_t)ret){
282
229
ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
283
230
length - written));
288
235
return true;
289
236
}
290
237
291
/* Removes and free a plugin from the plugin list */
292
static void free_plugin(plugin *plugin_node){
293
294
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
295
free(*arg);
296
}
297
free(plugin_node->argv);
298
for(char **env = plugin_node->environ; *env != NULL; env++){
299
free(*env);
300
}
301
free(plugin_node->environ);
302
free(plugin_node->buffer);
303
304
/* Removes the plugin from the singly-linked list */
305
if(plugin_node == plugin_list){
306
/* First one - simple */
307
plugin_list = plugin_list->next;
308
} else {
309
/* Second one or later */
310
for(plugin *p = plugin_list; p != NULL; p = p->next){
311
if(p->next == plugin_node){
312
p->next = plugin_node->next;
313
break;
314
}
238
char **add_to_argv(char **argv, int *argc, char *arg){
239
if (argv == NULL){
240
*argc = 1;
241
argv = malloc(sizeof(char*) * 2);
242
if(argv == NULL){
243
return NULL;
315
244
}
316
}
317
318
free(plugin_node);
245
argv[0] = NULL; /* Will be set to argv[0] in main before parsing */
246
argv[1] = NULL;
247
}
248
*argc += 1;
249
argv = realloc(argv, sizeof(char *)
250
* ((unsigned int) *argc + 1));
251
if(argv == NULL){
252
return NULL;
253
}
254
argv[*argc-1] = arg;
255
argv[*argc] = NULL;
256
return argv;
319
257
}
320
258
321
static void free_plugin_list(void){
322
while(plugin_list != NULL){
323
free_plugin(plugin_list);
324
}
259
static void free_plugin_list(plugin *plugin_list){
260
for(plugin *next = plugin_list; plugin_list != NULL; plugin_list = next){
261
next = plugin_list->next;
262
free(plugin_list->name);
263
for(char **arg = plugin_list->argv; *arg != NULL; arg++){
264
free(*arg);
265
}
266
free(plugin_list->argv);
267
for(char **env = plugin_list->environ; *env != NULL; env++){
268
free(*env);
269
}
270
free(plugin_list->environ);
271
free(plugin_list);
272
}
325
273
}
326
274
327
275
int main(int argc, char *argv[]){
328
char *plugindir = NULL;
329
char *argfile = NULL;
276
const char *plugindir = "/lib/mandos/plugins.d";
277
const char *argfile = ARGFILE;
330
278
FILE *conffp;
331
279
size_t d_name_len;
332
280
DIR *dir = NULL;
334
282
struct stat st;
335
283
fd_set rfds_all;
336
284
int ret, maxfd = 0;
337
ssize_t sret;
338
285
uid_t uid = 65534;
339
286
gid_t gid = 65534;
340
287
bool debug = false;
356
303
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
357
304
if(ret == -1){
358
305
perror("sigaction");
359
exitstatus = EXIT_FAILURE;
306
exitstatus = EXIT_FAILURE;
360
307
goto fallback;
361
308
}
362
309
365
312
{ .name = "global-options", .key = 'g',
366
313
.arg = "OPTION[,OPTION[,...]]",
367
314
.doc = "Options passed to all plugins" },
368
{ .name = "global-env", .key = 'G',
315
{ .name = "global-envs", .key = 'e',
369
316
.arg = "VAR=value",
370
317
.doc = "Environment variable passed to all plugins" },
371
318
{ .name = "options-for", .key = 'o',
372
319
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
373
320
.doc = "Options passed only to specified plugin" },
374
{ .name = "env-for", .key = 'E',
321
{ .name = "envs-for", .key = 'f',
375
322
.arg = "PLUGIN:ENV=value",
376
323
.doc = "Environment variable passed to specified plugin" },
377
324
{ .name = "disable", .key = 'd',
378
325
.arg = "PLUGIN",
379
326
.doc = "Disable a specific plugin", .group = 1 },
380
{ .name = "enable", .key = 'e',
381
.arg = "PLUGIN",
382
.doc = "Enable a specific plugin", .group = 1 },
383
327
{ .name = "plugin-dir", .key = 128,
384
328
.arg = "DIRECTORY",
385
329
.doc = "Specify a different plugin directory", .group = 2 },
386
{ .name = "config-file", .key = 129,
387
.arg = "FILE",
388
.doc = "Specify a different configuration file", .group = 2 },
389
{ .name = "userid", .key = 130,
390
.arg = "ID", .flags = 0,
391
.doc = "User ID the plugins will run as", .group = 3 },
392
{ .name = "groupid", .key = 131,
393
.arg = "ID", .flags = 0,
394
.doc = "Group ID the plugins will run as", .group = 3 },
395
{ .name = "debug", .key = 132,
396
.doc = "Debug mode", .group = 4 },
330
{ .name = "userid", .key = 129,
331
.arg = "ID", .flags = 0,
332
.doc = "User ID the plugins will run as", .group = 2 },
333
{ .name = "groupid", .key = 130,
334
.arg = "ID", .flags = 0,
335
.doc = "Group ID the plugins will run as", .group = 2 },
336
{ .name = "debug", .key = 131,
337
.doc = "Debug mode", .group = 3 },
397
338
{ .name = NULL }
398
339
};
399
340
400
error_t parse_opt(int key, char *arg, __attribute__((unused))
401
struct argp_state *state){
402
switch(key){
403
char *tmp;
404
intmax_t tmpmax;
405
case 'g': /* --global-options */
406
if(arg != NULL){
407
char *plugin_option;
408
while((plugin_option = strsep(&arg, ",")) != NULL){
409
if(plugin_option[0] == '\0'){
341
error_t parse_opt (int key, char *arg, struct argp_state *state) {
342
/* Get the INPUT argument from `argp_parse', which we know is a
343
pointer to our plugin list pointer. */
344
plugin **plugins = state->input;
345
switch (key) {
346
case 'g':
347
if (arg != NULL){
348
char *p;
349
while((p = strsep(&arg, ",")) != NULL){
350
if(p[0] == '\0'){
410
351
continue;
411
352
}
412
if(not add_argument(getplugin(NULL), plugin_option)){
353
if(not add_argument(getplugin(NULL, plugins), p)){
413
354
perror("add_argument");
414
355
return ARGP_ERR_UNKNOWN;
415
356
}
416
357
}
417
358
}
418
359
break;
419
case 'G': /* --global-env */
360
case 'e':
420
361
if(arg == NULL){
421
362
break;
422
363
}
423
if(not add_environment(getplugin(NULL), arg, true)){
424
perror("add_environment");
364
{
365
char *envdef = strdup(arg);
366
if(envdef == NULL){
367
break;
368
}
369
if(not add_environment(getplugin(NULL, plugins), envdef)){
370
perror("add_environment");
371
}
425
372
}
426
373
break;
427
case 'o': /* --options-for */
428
if(arg != NULL){
429
char *plugin_name = strsep(&arg, ":");
430
if(plugin_name[0] == '\0'){
431
break;
432
}
433
char *plugin_option;
434
while((plugin_option = strsep(&arg, ",")) != NULL){
435
if(not add_argument(getplugin(plugin_name), plugin_option)){
436
perror("add_argument");
437
return ARGP_ERR_UNKNOWN;
374
case 'o':
375
if (arg != NULL){
376
char *p_name = strsep(&arg, ":");
377
if(p_name[0] == '\0'){
378
break;
379
}
380
char *opt = strsep(&arg, ":");
381
if(opt[0] == '\0'){
382
break;
383
}
384
if(opt != NULL){
385
char *p;
386
while((p = strsep(&opt, ",")) != NULL){
387
if(p[0] == '\0'){
388
continue;
389
}
390
if(not add_argument(getplugin(p_name, plugins), p)){
391
perror("add_argument");
392
return ARGP_ERR_UNKNOWN;
393
}
438
394
}
439
395
}
440
396
}
441
397
break;
442
case 'E': /* --env-for */
398
case 'f':
443
399
if(arg == NULL){
444
400
break;
445
401
}
448
404
if(envdef == NULL){
449
405
break;
450
406
}
451
*envdef = '\0';
452
if(not add_environment(getplugin(arg), envdef+1, true)){
407
char *p_name = strndup(arg, (size_t) (envdef-arg));
408
if(p_name == NULL){
409
break;
410
}
411
envdef++;
412
if(not add_environment(getplugin(p_name, plugins), envdef)){
453
413
perror("add_environment");
454
414
}
455
415
}
456
416
break;
457
case 'd': /* --disable */
458
if(arg != NULL){
459
plugin *p = getplugin(arg);
417
case 'd':
418
if (arg != NULL){
419
plugin *p = getplugin(arg, plugins);
460
420
if(p == NULL){
461
421
return ARGP_ERR_UNKNOWN;
462
422
}
463
423
p->disabled = true;
464
424
}
465
425
break;
466
case 'e': /* --enable */
467
if(arg != NULL){
468
plugin *p = getplugin(arg);
469
if(p == NULL){
470
return ARGP_ERR_UNKNOWN;
471
}
472
p->disabled = false;
473
}
474
break;
475
case 128: /* --plugin-dir */
476
free(plugindir);
477
plugindir = strdup(arg);
478
if(plugindir == NULL){
479
perror("strdup");
480
}
481
break;
482
case 129: /* --config-file */
483
/* This is already done by parse_opt_config_file() */
484
break;
485
case 130: /* --userid */
486
errno = 0;
487
tmpmax = strtoimax(arg, &tmp, 10);
488
if(errno != 0 or tmp == arg or *tmp != '\0'
489
or tmpmax != (uid_t)tmpmax){
490
fprintf(stderr, "Bad user ID number: \"%s\", using %"
491
PRIdMAX "\n", arg, (intmax_t)uid);
492
} else {
493
uid = (uid_t)tmpmax;
494
}
495
break;
496
case 131: /* --groupid */
497
errno = 0;
498
tmpmax = strtoimax(arg, &tmp, 10);
499
if(errno != 0 or tmp == arg or *tmp != '\0'
500
or tmpmax != (gid_t)tmpmax){
501
fprintf(stderr, "Bad group ID number: \"%s\", using %"
502
PRIdMAX "\n", arg, (intmax_t)gid);
503
} else {
504
gid = (gid_t)tmpmax;
505
}
506
break;
507
case 132: /* --debug */
426
case 128:
427
plugindir = arg;
428
break;
429
case 129:
430
uid = (uid_t)strtol(arg, NULL, 10);
431
break;
432
case 130:
433
gid = (gid_t)strtol(arg, NULL, 10);
434
break;
435
case 131:
508
436
debug = true;
509
437
break;
510
/*
511
* When adding more options before this line, remember to also add a
512
* "case" to the "parse_opt_config_file" function below.
513
*/
514
case ARGP_KEY_ARG:
515
/* Cryptsetup always passes an argument, which is an empty
516
string if "none" was specified in /etc/crypttab. So if
517
argument was empty, we ignore it silently. */
518
if(arg[0] != '\0'){
519
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
520
}
521
break;
522
case ARGP_KEY_END:
523
break;
524
default:
525
return ARGP_ERR_UNKNOWN;
526
}
527
return 0;
528
}
529
530
/* This option parser is the same as parse_opt() above, except it
531
ignores everything but the --config-file option. */
532
error_t parse_opt_config_file(int key, char *arg,
533
__attribute__((unused))
534
struct argp_state *state){
535
switch(key){
536
case 'g': /* --global-options */
537
case 'G': /* --global-env */
538
case 'o': /* --options-for */
539
case 'E': /* --env-for */
540
case 'd': /* --disable */
541
case 'e': /* --enable */
542
case 128: /* --plugin-dir */
543
break;
544
case 129: /* --config-file */
545
free(argfile);
546
argfile = strdup(arg);
547
if(argfile == NULL){
548
perror("strdup");
549
}
550
break;
551
case 130: /* --userid */
552
case 131: /* --groupid */
553
case 132: /* --debug */
554
case ARGP_KEY_ARG:
555
case ARGP_KEY_END:
556
break;
557
default:
558
return ARGP_ERR_UNKNOWN;
559
}
560
return 0;
561
}
562
563
struct argp argp = { .options = options,
564
.parser = parse_opt_config_file,
565
.args_doc = "",
438
case ARGP_KEY_ARG:
439
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
440
break;
441
case ARGP_KEY_END:
442
break;
443
default:
444
return ARGP_ERR_UNKNOWN;
445
}
446
return 0;
447
}
448
449
plugin *plugin_list = NULL;
450
451
struct argp argp = { .options = options, .parser = parse_opt,
452
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
566
453
.doc = "Mandos plugin runner -- Run plugins" };
567
454
568
/* Parse using parse_opt_config_file() in order to get the custom
569
config file location, if any. */
570
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
571
if(ret == ARGP_ERR_UNKNOWN){
455
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
456
if (ret == ARGP_ERR_UNKNOWN){
572
457
fprintf(stderr, "Unknown error while parsing arguments\n");
573
458
exitstatus = EXIT_FAILURE;
574
459
goto fallback;
575
460
}
576
577
/* Reset to the normal argument parser */
578
argp.parser = parse_opt;
579
580
/* Open the configfile if available */
581
if(argfile == NULL){
582
conffp = fopen(AFILE, "r");
583
} else {
584
conffp = fopen(argfile, "r");
585
}
461
462
conffp = fopen(argfile, "r");
586
463
if(conffp != NULL){
587
464
char *org_line = NULL;
588
465
char *p, *arg, *new_arg, *line;
589
466
size_t size = 0;
467
ssize_t sret;
590
468
const char whitespace_delims[] = " \r\t\f\v\n";
591
469
const char comment_delim[] = "#";
592
593
custom_argc = 1;
594
custom_argv = malloc(sizeof(char*) * 2);
595
if(custom_argv == NULL){
596
perror("malloc");
597
exitstatus = EXIT_FAILURE;
598
goto fallback;
599
}
600
custom_argv[0] = argv[0];
601
custom_argv[1] = NULL;
602
603
/* for each line in the config file, strip whitespace and ignore
604
commented text */
470
605
471
while(true){
606
472
sret = getline(&org_line, &size, conffp);
607
473
if(sret == -1){
608
474
break;
609
475
}
610
476
611
477
line = org_line;
612
478
arg = strsep(&line, comment_delim);
613
479
while((p = strsep(&arg, whitespace_delims)) != NULL){
615
481
continue;
616
482
}
617
483
new_arg = strdup(p);
618
if(new_arg == NULL){
619
perror("strdup");
620
exitstatus = EXIT_FAILURE;
621
free(org_line);
622
goto fallback;
623
}
624
625
custom_argc += 1;
626
custom_argv = realloc(custom_argv, sizeof(char *)
627
* ((unsigned int) custom_argc + 1));
628
if(custom_argv == NULL){
629
perror("realloc");
630
exitstatus = EXIT_FAILURE;
631
free(org_line);
632
goto fallback;
633
}
634
custom_argv[custom_argc-1] = new_arg;
635
custom_argv[custom_argc] = NULL;
484
custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);
485
if (custom_argv == NULL){
486
perror("add_to_argv");
487
exitstatus = EXIT_FAILURE;
488
goto fallback;
489
}
636
490
}
637
491
}
638
do {
639
ret = fclose(conffp);
640
} while(ret == EOF and errno == EINTR);
641
if(ret == EOF){
642
perror("fclose");
643
exitstatus = EXIT_FAILURE;
644
goto fallback;
645
}
646
492
free(org_line);
647
} else {
493
} else{
648
494
/* Check for harmful errors and go to fallback. Other errors might
649
495
not affect opening plugins */
650
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
496
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
651
497
perror("fopen");
652
498
exitstatus = EXIT_FAILURE;
653
499
goto fallback;
654
500
}
655
501
}
656
/* If there was any arguments from configuration file,
657
pass them to parser as command arguments */
502
658
503
if(custom_argv != NULL){
659
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
660
0, NULL);
661
if(ret == ARGP_ERR_UNKNOWN){
504
custom_argv[0] = argv[0];
505
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
506
if (ret == ARGP_ERR_UNKNOWN){
662
507
fprintf(stderr, "Unknown error while parsing arguments\n");
663
508
exitstatus = EXIT_FAILURE;
664
509
goto fallback;
665
510
}
666
511
}
667
512
668
/* Parse actual command line arguments, to let them override the
669
config file */
670
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
671
if(ret == ARGP_ERR_UNKNOWN){
672
fprintf(stderr, "Unknown error while parsing arguments\n");
673
exitstatus = EXIT_FAILURE;
674
goto fallback;
675
}
676
677
513
if(debug){
678
514
for(plugin *p = plugin_list; p != NULL; p=p->next){
679
515
fprintf(stderr, "Plugin: %s has %d arguments\n",
681
517
for(char **a = p->argv; *a != NULL; a++){
682
518
fprintf(stderr, "\tArg: %s\n", *a);
683
519
}
684
fprintf(stderr, "...and %d environment variables\n", p->envc);
520
fprintf(stderr, "...and %u environment variables\n", p->envc);
685
521
for(char **a = p->environ; *a != NULL; a++){
686
522
fprintf(stderr, "\t%s\n", *a);
687
523
}
688
524
}
689
525
}
690
526
691
/* Strip permissions down to nobody */
527
ret = setuid(uid);
528
if (ret == -1){
529
perror("setuid");
530
}
531
692
532
setgid(gid);
693
if(ret == -1){
533
if (ret == -1){
694
534
perror("setgid");
695
535
}
696
ret = setuid(uid);
697
if(ret == -1){
698
perror("setuid");
536
537
dir = opendir(plugindir);
538
if(dir == NULL){
539
perror("Could not open plugin dir");
540
exitstatus = EXIT_FAILURE;
541
goto fallback;
699
542
}
700
543
701
/* Open plugin directory with close_on_exec flag */
544
/* Set the FD_CLOEXEC flag on the directory, if possible */
702
545
{
703
int dir_fd = -1;
704
if(plugindir == NULL){
705
dir_fd = open(PDIR, O_RDONLY |
706
#ifdef O_CLOEXEC
707
O_CLOEXEC
708
#else /* not O_CLOEXEC */
709
0
710
#endif /* not O_CLOEXEC */
711
);
712
} else {
713
dir_fd = open(plugindir, O_RDONLY |
714
#ifdef O_CLOEXEC
715
O_CLOEXEC
716
#else /* not O_CLOEXEC */
717
0
718
#endif /* not O_CLOEXEC */
719
);
720
}
721
if(dir_fd == -1){
722
perror("Could not open plugin dir");
723
exitstatus = EXIT_FAILURE;
724
goto fallback;
725
}
726
727
#ifndef O_CLOEXEC
728
/* Set the FD_CLOEXEC flag on the directory */
729
ret = set_cloexec_flag(dir_fd);
730
if(ret < 0){
731
perror("set_cloexec_flag");
732
TEMP_FAILURE_RETRY(close(dir_fd));
733
exitstatus = EXIT_FAILURE;
734
goto fallback;
735
}
736
#endif /* O_CLOEXEC */
737
738
dir = fdopendir(dir_fd);
739
if(dir == NULL){
740
perror("Could not open plugin dir");
741
TEMP_FAILURE_RETRY(close(dir_fd));
742
exitstatus = EXIT_FAILURE;
743
goto fallback;
546
int dir_fd = dirfd(dir);
547
if(dir_fd >= 0){
548
ret = set_cloexec_flag(dir_fd);
549
if(ret < 0){
550
perror("set_cloexec_flag");
551
exitstatus = EXIT_FAILURE;
552
goto fallback;
553
}
744
554
}
745
555
}
746
556
747
557
FD_ZERO(&rfds_all);
748
558
749
/* Read and execute any executable in the plugin directory*/
750
559
while(true){
751
do {
752
dirst = readdir(dir);
753
} while(dirst == NULL and errno == EINTR);
560
dirst = readdir(dir);
754
561
755
/* All directory entries have been processed */
562
// All directory entries have been processed
756
563
if(dirst == NULL){
757
if(errno == EBADF){
564
if (errno == EBADF){
758
565
perror("readdir");
759
566
exitstatus = EXIT_FAILURE;
760
567
goto fallback;
764
571
765
572
d_name_len = strlen(dirst->d_name);
766
573
767
/* Ignore dotfiles, backup files and other junk */
574
// Ignore dotfiles, backup files and other junk
768
575
{
769
576
bool bad_name = false;
770
577
772
579
773
580
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
774
581
".dpkg-old",
775
".dpkg-bak",
776
582
".dpkg-divert", NULL };
777
583
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
778
584
size_t pre_len = strlen(*pre);
786
592
break;
787
593
}
788
594
}
595
789
596
if(bad_name){
790
597
continue;
791
598
}
599
792
600
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
793
601
size_t suf_len = strlen(*suf);
794
602
if((d_name_len >= suf_len)
807
615
continue;
808
616
}
809
617
}
810
618
811
619
char *filename;
812
if(plugindir == NULL){
813
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
814
dirst->d_name));
815
} else {
816
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s",
817
plugindir,
818
dirst->d_name));
819
}
620
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
820
621
if(ret < 0){
821
622
perror("asprintf");
822
623
continue;
823
624
}
824
625
825
ret = (int)TEMP_FAILURE_RETRY(stat(filename, &st));
826
if(ret == -1){
626
ret = stat(filename, &st);
627
if (ret == -1){
827
628
perror("stat");
828
629
free(filename);
829
630
continue;
830
631
}
831
632
832
/* Ignore non-executable files */
833
if(not S_ISREG(st.st_mode)
834
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
633
if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
835
634
if(debug){
836
635
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
837
636
" with bad type or mode\n", filename);
839
638
free(filename);
840
639
continue;
841
640
}
842
843
plugin *p = getplugin(dirst->d_name);
641
plugin *p = getplugin(dirst->d_name, &plugin_list);
844
642
if(p == NULL){
845
643
perror("getplugin");
846
644
free(filename);
856
654
}
857
655
{
858
656
/* Add global arguments to argument list for this plugin */
859
plugin *g = getplugin(NULL);
657
plugin *g = getplugin(NULL, &plugin_list);
860
658
if(g != NULL){
861
659
for(char **a = g->argv + 1; *a != NULL; a++){
862
660
if(not add_argument(p, *a)){
865
663
}
866
664
/* Add global environment variables */
867
665
for(char **e = g->environ; *e != NULL; e++){
868
if(not add_environment(p, *e, false)){
666
if(not add_environment(p, *e)){
869
667
perror("add_environment");
870
668
}
871
669
}
876
674
process, too. */
877
675
if(p->environ[0] != NULL){
878
676
for(char **e = environ; *e != NULL; e++){
879
if(not add_environment(p, *e, false)){
677
char *copy = strdup(*e);
678
if(copy == NULL){
679
perror("strdup");
680
continue;
681
}
682
if(not add_environment(p, copy)){
880
683
perror("add_environment");
881
684
}
882
685
}
883
686
}
884
687
885
int pipefd[2];
886
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
887
if(ret == -1){
688
int pipefd[2];
689
ret = pipe(pipefd);
690
if (ret == -1){
888
691
perror("pipe");
889
692
exitstatus = EXIT_FAILURE;
890
693
goto fallback;
891
694
}
892
/* Ask OS to automatic close the pipe on exec */
893
695
ret = set_cloexec_flag(pipefd[0]);
894
696
if(ret < 0){
895
697
perror("set_cloexec_flag");
903
705
goto fallback;
904
706
}
905
707
/* Block SIGCHLD until process is safely in process list */
906
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
907
&sigchld_action.sa_mask,
908
NULL));
708
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
909
709
if(ret < 0){
910
710
perror("sigprocmask");
911
711
exitstatus = EXIT_FAILURE;
912
712
goto fallback;
913
713
}
914
/* Starting a new process to be watched */
915
pid_t pid;
916
do {
917
pid = fork();
918
} while(pid == -1 and errno == EINTR);
714
// Starting a new process to be watched
715
pid_t pid = fork();
919
716
if(pid == -1){
920
717
perror("fork");
921
718
exitstatus = EXIT_FAILURE;
928
725
perror("sigaction");
929
726
_exit(EXIT_FAILURE);
930
727
}
931
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
728
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
932
729
if(ret < 0){
933
730
perror("sigprocmask");
934
731
_exit(EXIT_FAILURE);
935
732
}
936
733
937
734
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
938
735
if(ret == -1){
939
736
perror("dup2");
958
755
}
959
756
/* no return */
960
757
}
961
/* Parent process */
962
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
963
pipe */
758
/* parent process */
964
759
free(filename);
965
plugin *new_plugin = getplugin(dirst->d_name);
966
if(new_plugin == NULL){
967
perror("getplugin");
968
ret = (int)(TEMP_FAILURE_RETRY
969
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
970
NULL)));
760
close(pipefd[1]); /* close unused write end of pipe */
761
process *new_process = malloc(sizeof(process));
762
if (new_process == NULL){
763
perror("malloc");
764
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
971
765
if(ret < 0){
972
perror("sigprocmask");
766
perror("sigprocmask");
973
767
}
974
768
exitstatus = EXIT_FAILURE;
975
769
goto fallback;
976
770
}
977
771
978
new_plugin->pid = pid;
979
new_plugin->fd = pipefd[0];
980
772
*new_process = (struct process){ .pid = pid,
773
.fd = pipefd[0],
774
.next = process_list };
775
// List handling
776
process_list = new_process;
981
777
/* Unblock SIGCHLD so signal handler can be run if this process
982
778
has already completed */
983
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
984
&sigchld_action.sa_mask,
985
NULL));
779
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
986
780
if(ret < 0){
987
781
perror("sigprocmask");
988
782
exitstatus = EXIT_FAILURE;
989
783
goto fallback;
990
784
}
991
785
992
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
993
-Wconversion */
786
FD_SET(new_process->fd, &rfds_all);
994
787
995
if(maxfd < new_plugin->fd){
996
maxfd = new_plugin->fd;
788
if (maxfd < new_process->fd){
789
maxfd = new_process->fd;
997
790
}
791
998
792
}
999
793
1000
TEMP_FAILURE_RETRY(closedir(dir));
794
free_plugin_list(plugin_list);
795
796
closedir(dir);
1001
797
dir = NULL;
1002
free_plugin(getplugin(NULL));
1003
1004
for(plugin *p = plugin_list; p != NULL; p = p->next){
1005
if(p->pid != 0){
1006
break;
1007
}
1008
if(p->next == NULL){
1009
fprintf(stderr, "No plugin processes started. Incorrect plugin"
1010
" directory?\n");
1011
free_plugin_list();
1012
}
798
799
if (process_list == NULL){
800
fprintf(stderr, "No plugin processes started. Incorrect plugin"
801
" directory?\n");
802
process_list = NULL;
1013
803
}
1014
1015
/* Main loop while running plugins exist */
1016
while(plugin_list){
804
while(process_list){
1017
805
fd_set rfds = rfds_all;
1018
806
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1019
if(select_ret == -1 and errno != EINTR){
807
if (select_ret == -1){
1020
808
perror("select");
1021
809
exitstatus = EXIT_FAILURE;
1022
810
goto fallback;
1023
811
}
1024
812
/* OK, now either a process completed, or something can be read
1025
813
from one of them */
1026
for(plugin *proc = plugin_list; proc != NULL;){
814
for(process *proc = process_list; proc ; proc = proc->next){
1027
815
/* Is this process completely done? */
1028
if(proc->completed and proc->eof){
816
if(proc->eof and proc->completed){
1029
817
/* Only accept the plugin output if it exited cleanly */
1030
818
if(not WIFEXITED(proc->status)
1031
819
or WEXITSTATUS(proc->status) != 0){
1032
820
/* Bad exit by plugin */
1033
1034
821
if(debug){
1035
822
if(WIFEXITED(proc->status)){
1036
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1037
" status %d\n", proc->name,
1038
(intmax_t) (proc->pid),
823
fprintf(stderr, "Plugin %u exited with status %d\n",
824
(unsigned int) (proc->pid),
1039
825
WEXITSTATUS(proc->status));
1040
} else if(WIFSIGNALED(proc->status)){
1041
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1042
" signal %d: %s\n", proc->name,
1043
(intmax_t) (proc->pid),
1044
WTERMSIG(proc->status),
1045
strsignal(WTERMSIG(proc->status)));
826
} else if(WIFSIGNALED(proc->status)) {
827
fprintf(stderr, "Plugin %u killed by signal %d\n",
828
(unsigned int) (proc->pid),
829
WTERMSIG(proc->status));
1046
830
} else if(WCOREDUMP(proc->status)){
1047
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1048
" core\n", proc->name, (intmax_t) (proc->pid));
831
fprintf(stderr, "Plugin %d dumped core\n",
832
(unsigned int) (proc->pid));
1049
833
}
1050
834
}
1051
1052
835
/* Remove the plugin */
1053
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1054
-Wconversion */
1055
836
FD_CLR(proc->fd, &rfds_all);
1056
837
/* Block signal while modifying process_list */
1057
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1058
(SIG_BLOCK,
1059
&sigchld_action.sa_mask,
1060
NULL));
838
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1061
839
if(ret < 0){
1062
840
perror("sigprocmask");
1063
841
exitstatus = EXIT_FAILURE;
1064
842
goto fallback;
1065
843
}
1066
1067
plugin *next_plugin = proc->next;
1068
free_plugin(proc);
1069
proc = next_plugin;
1070
844
/* Delete this process entry from the list */
845
if(process_list == proc){
846
/* First one - simple */
847
process_list = proc->next;
848
} else {
849
/* Second one or later */
850
for(process *p = process_list; p != NULL; p = p->next){
851
if(p->next == proc){
852
p->next = proc->next;
853
break;
854
}
855
}
856
}
1071
857
/* We are done modifying process list, so unblock signal */
1072
ret = (int)(TEMP_FAILURE_RETRY
1073
(sigprocmask(SIG_UNBLOCK,
1074
&sigchld_action.sa_mask, NULL)));
858
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
859
NULL);
1075
860
if(ret < 0){
1076
861
perror("sigprocmask");
1077
exitstatus = EXIT_FAILURE;
1078
goto fallback;
1079
}
1080
1081
if(plugin_list == NULL){
1082
break;
1083
}
1084
1085
continue;
862
}
863
free(proc->buffer);
864
free(proc);
865
/* We deleted this process from the list, so we can't go
866
proc->next. Therefore, start over from the beginning of
867
the process list */
868
break;
1086
869
}
1087
1088
870
/* This process exited nicely, so print its buffer */
1089
1090
bool bret = print_out_password(proc->buffer,
1091
proc->buffer_length);
871
872
bool bret = print_out_password(proc->buffer, proc->buffer_length);
1092
873
if(not bret){
1093
874
perror("print_out_password");
1094
875
exitstatus = EXIT_FAILURE;
1095
876
}
1096
877
goto fallback;
1097
878
}
1098
1099
879
/* This process has not completed. Does it have any output? */
1100
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1101
warning from
1102
-Wconversion */
880
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1103
881
/* This process had nothing to say at this time */
1104
proc = proc->next;
1105
882
continue;
1106
883
}
1107
884
/* Before reading, make the process' data buffer large enough */
1108
885
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1109
886
proc->buffer = realloc(proc->buffer, proc->buffer_size
1110
887
+ (size_t) BUFFER_SIZE);
1111
if(proc->buffer == NULL){
888
if (proc->buffer == NULL){
1112
889
perror("malloc");
1113
890
exitstatus = EXIT_FAILURE;
1114
891
goto fallback;
1116
893
proc->buffer_size += BUFFER_SIZE;
1117
894
}
1118
895
/* Read from the process */
1119
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1120
proc->buffer
1121
+ proc->buffer_length,
1122
BUFFER_SIZE));
1123
if(sret < 0){
896
ret = read(proc->fd, proc->buffer + proc->buffer_length,
897
BUFFER_SIZE);
898
if(ret < 0){
1124
899
/* Read error from this process; ignore the error */
1125
proc = proc->next;
1126
900
continue;
1127
901
}
1128
if(sret == 0){
902
if(ret == 0){
1129
903
/* got EOF */
1130
904
proc->eof = true;
1131
905
} else {
1132
proc->buffer_length += (size_t) sret;
906
proc->buffer_length += (size_t) ret;
1133
907
}
1134
908
}
1135
909
}
1136
1137
910
911
1138
912
fallback:
1139
913
1140
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1141
/* Fallback if all plugins failed, none are found or an error
1142
occured */
914
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
915
/* Fallback if all plugins failed, none are found or an error occured */
1143
916
bool bret;
1144
917
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
1145
918
char *passwordbuffer = getpass("Password: ");
1146
size_t len = strlen(passwordbuffer);
1147
/* Strip trailing newline */
1148
if(len > 0 and passwordbuffer[len-1] == '\n'){
1149
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1150
len--;
1151
}
1152
bret = print_out_password(passwordbuffer, len);
919
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1153
920
if(not bret){
1154
921
perror("print_out_password");
1155
922
exitstatus = EXIT_FAILURE;
1162
929
perror("sigaction");
1163
930
exitstatus = EXIT_FAILURE;
1164
931
}
1165
932
1166
933
if(custom_argv != NULL){
1167
for(char **arg = custom_argv+1; *arg != NULL; arg++){
934
for(char **arg = custom_argv; *arg != NULL; arg++){
1168
935
free(*arg);
1169
936
}
1170
937
free(custom_argv);
1171
938
}
939
free_plugin_list(plugin_list);
1172
940
1173
941
if(dir != NULL){
1174
942
closedir(dir);
1175
943
}
1176
944
1177
/* Kill the processes */
1178
for(plugin *p = plugin_list; p != NULL; p = p->next){
1179
if(p->pid != 0){
1180
close(p->fd);
1181
ret = kill(p->pid, SIGTERM);
1182
if(ret == -1 and errno != ESRCH){
1183
/* Set-uid proccesses might not get closed */
1184
perror("kill");
1185
}
945
/* Free the process list and kill the processes */
946
for(process *next; process_list != NULL; process_list = next){
947
next = process_list->next;
948
close(process_list->fd);
949
ret = kill(process_list->pid, SIGTERM);
950
if(ret == -1 and errno != ESRCH){
951
/* set-uid proccesses migth not get closed */
952
perror("kill");
1186
953
}
954
free(process_list->buffer);
955
free(process_list);
1187
956
}
1188
957
1189
958
/* Wait for any remaining child processes to terminate */
1190
do {
959
do{
1191
960
ret = wait(NULL);
1192
961
} while(ret >= 0);
1193
962
if(errno != ECHILD){
1194
963
perror("wait");
1195
964
}
1196
965
1197
free_plugin_list();
1198
1199
free(plugindir);
1200
free(argfile);
1201
1202
966
return exitstatus;
1203
967
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0