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- Committer: Teddy Hogeborn
- Date: 2008-08-31 08:47:38 UTC
- Revision ID: teddy@fukt.bsnet.se-20080831084738-uu70kayyt876982d
* mandos-keygen: Minor help text change.
* mandos-keygen.xml: Changed plural "keys" to singular "key"
throughout.
(NAME): Improved wording.
(DESCRIPTION): Improved wording.
(OPTIONS): Split options in <term> tags into separate <term> tags.
Use <option> tags. Move long options before short
options. Uppercase replaceables.
(OVERVIEW): Improved wording.
(EXIT STATUS): Also cover --password option.
(EXAMPLE): Add two examples using the --password option.
(SECURITY): Improved wording.
* overview.xml: Improved wording.
* mandos-keygen.xml: Changed plural "keys" to singular "key"
throughout.
(NAME): Improved wording.
(DESCRIPTION): Improved wording.
(OPTIONS): Split options in <term> tags into separate <term> tags.
Use <option> tags. Move long options before short
options. Uppercase replaceables.
(OVERVIEW): Improved wording.
(EXIT STATUS): Also cover --password option.
(EXAMPLE): Add two examples using the --password option.
(SECURITY): Improved wording.
* overview.xml: Improved wording.
- files added:
- .bzrignore
- files removed:
- network-protocol.txt
- files modified:
- Makefile
added
removed
plugin-runner.c
21
21
* Contact the authors at <mandos@fukt.bsnet.se>.
22
22
*/
23
23
24
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline() */
25
24
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
25
asprintf() */
26
26
#include <stddef.h> /* size_t, NULL */
27
27
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
28
28
EXIT_SUCCESS, realloc() */
51
51
close() */
52
52
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
53
53
FD_CLOEXEC */
54
#include <string.h> /* strsep, strlen(), strcpy(),
55
strcat() */
54
#include <string.h> /* strsep, strlen(), asprintf() */
56
55
#include <errno.h> /* errno */
57
56
#include <argp.h> /* struct argp_option, struct
58
57
argp_state, struct argp,
59
58
argp_parse(), ARGP_ERR_UNKNOWN,
60
ARGP_KEY_END, ARGP_KEY_ARG, error_t */
59
ARGP_KEY_END, ARGP_KEY_ARG,
60
error_t */
61
61
#include <signal.h> /* struct sigaction, sigemptyset(),
62
62
sigaddset(), sigaction(),
63
63
sigprocmask(), SIG_BLOCK, SIGCHLD,
65
65
#include <errno.h> /* errno, EBADF */
66
66
67
67
#define BUFFER_SIZE 256
68
#define ARGFILE "/conf/conf.d/mandos/plugin-runner.conf"
68
69
#define PDIR "/lib/mandos/plugins.d"
70
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
69
71
70
72
const char *argp_program_version = "plugin-runner 1.0";
71
73
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
79
81
size_t buffer_size;
80
82
size_t buffer_length;
81
83
bool eof;
82
bool completed;
83
int status;
84
volatile bool completed;
85
volatile int status;
84
86
struct process *next;
85
87
} process;
86
88
88
90
char *name; /* can be NULL or any plugin name */
89
91
char **argv;
90
92
int argc;
93
char **environ;
94
int envc;
91
95
bool disabled;
92
96
struct plugin *next;
93
97
} plugin;
102
106
/* Create a new plugin */
103
107
plugin *new_plugin = malloc(sizeof(plugin));
104
108
if (new_plugin == NULL){
105
perror("malloc");
106
exit(EXIT_FAILURE);
107
}
108
new_plugin->name = name;
109
return NULL;
110
}
111
char *copy_name = NULL;
112
if(name != NULL){
113
copy_name = strdup(name);
114
if(copy_name == NULL){
115
return NULL;
116
}
117
}
118
119
*new_plugin = (plugin) { .name = copy_name,
120
.argc = 1,
121
.envc = 0,
122
.disabled = false,
123
.next = *plugin_list };
124
109
125
new_plugin->argv = malloc(sizeof(char *) * 2);
110
126
if (new_plugin->argv == NULL){
111
perror("malloc");
112
exit(EXIT_FAILURE);
127
free(copy_name);
128
free(new_plugin);
129
return NULL;
113
130
}
114
new_plugin->argv[0] = name;
131
new_plugin->argv[0] = copy_name;
115
132
new_plugin->argv[1] = NULL;
116
new_plugin->argc = 1;
117
new_plugin->disabled = false;
118
new_plugin->next = *plugin_list;
133
134
new_plugin->environ = malloc(sizeof(char *));
135
if(new_plugin->environ == NULL){
136
free(copy_name);
137
free(new_plugin->argv);
138
free(new_plugin);
139
return NULL;
140
}
141
new_plugin->environ[0] = NULL;
119
142
/* Append the new plugin to the list */
120
143
*plugin_list = new_plugin;
121
144
return new_plugin;
122
145
}
123
146
124
static void addargument(plugin *p, char *arg){
125
p->argv[p->argc] = arg;
126
p->argv = realloc(p->argv, sizeof(char *) * (size_t)(p->argc + 2));
127
if (p->argv == NULL){
128
perror("malloc");
129
exit(EXIT_FAILURE);
130
}
131
p->argc++;
132
p->argv[p->argc] = NULL;
133
}
147
/* Helper function for add_argument and add_environment */
148
static bool add_to_char_array(const char *new, char ***array,
149
int *len){
150
/* Resize the pointed-to array to hold one more pointer */
151
*array = realloc(*array, sizeof(char *)
152
* (size_t) ((*len) + 2));
153
/* Malloc check */
154
if(*array == NULL){
155
return false;
156
}
157
/* Make a copy of the new string */
158
char *copy = strdup(new);
159
if(copy == NULL){
160
return false;
161
}
162
/* Insert the copy */
163
(*array)[*len] = copy;
164
(*len)++;
165
/* Add a new terminating NULL pointer to the last element */
166
(*array)[*len] = NULL;
167
return true;
168
}
169
170
/* Add to a plugin's argument vector */
171
static bool add_argument(plugin *p, const char *arg){
172
if(p == NULL){
173
return false;
174
}
175
return add_to_char_array(arg, &(p->argv), &(p->argc));
176
}
177
178
/* Add to a plugin's environment */
179
static bool add_environment(plugin *p, const char *def){
180
if(p == NULL){
181
return false;
182
}
183
return add_to_char_array(def, &(p->environ), &(p->envc));
184
}
185
134
186
135
187
/*
136
188
* Based on the example in the GNU LibC manual chapter 13.13 "File
150
202
151
203
process *process_list = NULL;
152
204
153
/* Mark a process as completed when it exits, and save its exit
205
/* Mark processes as completed when they exit, and save their exit
154
206
status. */
155
207
void handle_sigchld(__attribute__((unused)) int sig){
156
process *proc = process_list;
157
int status;
158
pid_t pid = wait(&status);
159
if(pid == -1){
160
perror("wait");
161
return;
162
}
163
while(proc != NULL and proc->pid != pid){
164
proc = proc->next;
165
}
166
if(proc == NULL){
167
/* Process not found in process list */
168
return;
169
}
170
proc->status = status;
171
proc->completed = true;
208
while(true){
209
process *proc = process_list;
210
int status;
211
pid_t pid = waitpid(-1, &status, WNOHANG);
212
if(pid == 0){
213
/* Only still running child processes */
214
break;
215
}
216
if(pid == -1){
217
if (errno != ECHILD){
218
perror("waitpid");
219
}
220
/* No child processes */
221
break;
222
}
223
224
/* A child exited, find it in process_list */
225
while(proc != NULL and proc->pid != pid){
226
proc = proc->next;
227
}
228
if(proc == NULL){
229
/* Process not found in process list */
230
continue;
231
}
232
proc->status = status;
233
proc->completed = true;
234
}
172
235
}
173
236
174
237
bool print_out_password(const char *buffer, size_t length){
186
249
return true;
187
250
}
188
251
189
char ** addcustomargument(char **argv, int *argc, char *arg){
190
191
if (argv == NULL){
192
*argc = 1;
193
argv = malloc(sizeof(char*) * 2);
194
if(argv == NULL){
195
return NULL;
196
}
197
argv[0] = NULL; /* Will be set to argv[0] in main before parsing */
198
argv[1] = NULL;
199
}
200
*argc += 1;
201
argv = realloc(argv, sizeof(char *)
202
* ((unsigned int) *argc + 1));
203
if(argv == NULL){
204
return NULL;
205
}
206
argv[*argc-1] = arg;
207
argv[*argc] = NULL;
208
return argv;
252
static void free_plugin_list(plugin *plugin_list){
253
for(plugin *next; plugin_list != NULL; plugin_list = next){
254
next = plugin_list->next;
255
for(char **arg = plugin_list->argv; *arg != NULL; arg++){
256
free(*arg);
257
}
258
free(plugin_list->argv);
259
for(char **env = plugin_list->environ; *env != NULL; env++){
260
free(*env);
261
}
262
free(plugin_list->environ);
263
free(plugin_list);
264
}
209
265
}
210
266
211
267
int main(int argc, char *argv[]){
212
const char *plugindir = "/lib/mandos/plugins.d";
213
const char *argfile = ARGFILE;
268
char *plugindir = NULL;
269
char *argfile = NULL;
214
270
FILE *conffp;
215
271
size_t d_name_len;
216
272
DIR *dir = NULL;
231
287
/* Establish a signal handler */
232
288
sigemptyset(&sigchld_action.sa_mask);
233
289
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
234
if(ret < 0){
290
if(ret == -1){
235
291
perror("sigaddset");
236
exit(EXIT_FAILURE);
292
exitstatus = EXIT_FAILURE;
293
goto fallback;
237
294
}
238
295
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
239
if(ret < 0){
296
if(ret == -1){
240
297
perror("sigaction");
241
exit(EXIT_FAILURE);
298
exitstatus = EXIT_FAILURE;
299
goto fallback;
242
300
}
243
301
244
302
/* The options we understand. */
246
304
{ .name = "global-options", .key = 'g',
247
305
.arg = "OPTION[,OPTION[,...]]",
248
306
.doc = "Options passed to all plugins" },
307
{ .name = "global-envs", .key = 'e',
308
.arg = "VAR=value",
309
.doc = "Environment variable passed to all plugins" },
249
310
{ .name = "options-for", .key = 'o',
250
311
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
251
312
.doc = "Options passed only to specified plugin" },
313
{ .name = "envs-for", .key = 'f',
314
.arg = "PLUGIN:ENV=value",
315
.doc = "Environment variable passed to specified plugin" },
252
316
{ .name = "disable", .key = 'd',
253
317
.arg = "PLUGIN",
254
318
.doc = "Disable a specific plugin", .group = 1 },
255
319
{ .name = "plugin-dir", .key = 128,
256
320
.arg = "DIRECTORY",
257
321
.doc = "Specify a different plugin directory", .group = 2 },
258
{ .name = "userid", .key = 129,
259
.arg = "ID", .flags = 0,
260
.doc = "User ID the plugins will run as", .group = 2 },
261
{ .name = "groupid", .key = 130,
262
.arg = "ID", .flags = 0,
263
.doc = "Group ID the plugins will run as", .group = 2 },
264
{ .name = "debug", .key = 131,
265
.doc = "Debug mode", .group = 3 },
322
{ .name = "config-file", .key = 129,
323
.arg = "FILE",
324
.doc = "Specify a different configuration file", .group = 2 },
325
{ .name = "userid", .key = 130,
326
.arg = "ID", .flags = 0,
327
.doc = "User ID the plugins will run as", .group = 3 },
328
{ .name = "groupid", .key = 131,
329
.arg = "ID", .flags = 0,
330
.doc = "Group ID the plugins will run as", .group = 3 },
331
{ .name = "debug", .key = 132,
332
.doc = "Debug mode", .group = 4 },
266
333
{ .name = NULL }
267
334
};
268
335
278
345
if(p[0] == '\0'){
279
346
continue;
280
347
}
281
addargument(getplugin(NULL, plugins), p);
348
if(not add_argument(getplugin(NULL, plugins), p)){
349
perror("add_argument");
350
return ARGP_ERR_UNKNOWN;
351
}
352
}
353
}
354
break;
355
case 'e':
356
if(arg == NULL){
357
break;
358
}
359
{
360
char *envdef = strdup(arg);
361
if(envdef == NULL){
362
break;
363
}
364
if(not add_environment(getplugin(NULL, plugins), envdef)){
365
perror("add_environment");
282
366
}
283
367
}
284
368
break;
285
369
case 'o':
286
370
if (arg != NULL){
287
char *name = strsep(&arg, ":");
288
if(name[0] == '\0'){
371
char *p_name = strsep(&arg, ":");
372
if(p_name[0] == '\0'){
289
373
break;
290
374
}
291
375
char *opt = strsep(&arg, ":");
298
382
if(p[0] == '\0'){
299
383
continue;
300
384
}
301
addargument(getplugin(name, plugins), p);
385
if(not add_argument(getplugin(p_name, plugins), p)){
386
perror("add_argument");
387
return ARGP_ERR_UNKNOWN;
388
}
302
389
}
303
390
}
304
391
}
305
392
break;
393
case 'f':
394
if(arg == NULL){
395
break;
396
}
397
{
398
char *envdef = strchr(arg, ':');
399
if(envdef == NULL){
400
break;
401
}
402
char *p_name = strndup(arg, (size_t) (envdef-arg));
403
if(p_name == NULL){
404
break;
405
}
406
envdef++;
407
if(not add_environment(getplugin(p_name, plugins), envdef)){
408
perror("add_environment");
409
}
410
}
411
break;
306
412
case 'd':
307
413
if (arg != NULL){
308
getplugin(arg, plugins)->disabled = true;
414
plugin *p = getplugin(arg, plugins);
415
if(p == NULL){
416
return ARGP_ERR_UNKNOWN;
417
}
418
p->disabled = true;
309
419
}
310
420
break;
311
421
case 128:
312
plugindir = arg;
422
plugindir = strdup(arg);
423
if(plugindir == NULL){
424
perror("strdup");
425
}
313
426
break;
314
427
case 129:
428
argfile = strdup(arg);
429
if(argfile == NULL){
430
perror("strdup");
431
}
432
break;
433
case 130:
315
434
uid = (uid_t)strtol(arg, NULL, 10);
316
435
break;
317
case 130:
436
case 131:
318
437
gid = (gid_t)strtol(arg, NULL, 10);
319
438
break;
320
case 131:
439
case 132:
321
440
debug = true;
322
441
break;
323
442
case ARGP_KEY_ARG:
324
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
443
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
325
444
break;
326
445
case ARGP_KEY_END:
327
446
break;
341
460
if (ret == ARGP_ERR_UNKNOWN){
342
461
fprintf(stderr, "Unknown error while parsing arguments\n");
343
462
exitstatus = EXIT_FAILURE;
344
goto end;
463
goto fallback;
345
464
}
346
465
347
conffp = fopen(argfile, "r");
466
if (argfile == NULL){
467
conffp = fopen(AFILE, "r");
468
} else {
469
conffp = fopen(argfile, "r");
470
}
471
348
472
if(conffp != NULL){
349
473
char *org_line = NULL;
474
char *p, *arg, *new_arg, *line;
350
475
size_t size = 0;
351
476
ssize_t sret;
352
char *p, *arg, *new_arg, *line;
353
477
const char whitespace_delims[] = " \r\t\f\v\n";
354
478
const char comment_delim[] = "#";
355
479
480
custom_argc = 1;
481
custom_argv = malloc(sizeof(char*) * 2);
482
if(custom_argv == NULL){
483
perror("malloc");
484
exitstatus = EXIT_FAILURE;
485
goto fallback;
486
}
487
custom_argv[0] = argv[0];
488
custom_argv[1] = NULL;
489
356
490
while(true){
357
491
sret = getline(&org_line, &size, conffp);
358
492
if(sret == -1){
366
500
continue;
367
501
}
368
502
new_arg = strdup(p);
369
custom_argv = addcustomargument(custom_argv, &custom_argc, new_arg);
370
if (custom_argv == NULL){
371
perror("addcustomargument");
372
exitstatus = EXIT_FAILURE;
373
goto end;
374
}
503
if(new_arg == NULL){
504
perror("strdup");
505
exitstatus = EXIT_FAILURE;
506
free(org_line);
507
goto fallback;
508
}
509
510
custom_argc += 1;
511
custom_argv = realloc(custom_argv, sizeof(char *)
512
* ((unsigned int) custom_argc + 1));
513
if(custom_argv == NULL){
514
perror("realloc");
515
exitstatus = EXIT_FAILURE;
516
free(org_line);
517
goto fallback;
518
}
519
custom_argv[custom_argc-1] = new_arg;
520
custom_argv[custom_argc] = NULL;
375
521
}
376
522
}
377
523
free(org_line);
381
527
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
382
528
perror("fopen");
383
529
exitstatus = EXIT_FAILURE;
384
goto end;
530
goto fallback;
385
531
}
386
532
}
387
533
388
534
if(custom_argv != NULL){
389
custom_argv[0] = argv[0];
390
535
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
391
536
if (ret == ARGP_ERR_UNKNOWN){
392
537
fprintf(stderr, "Unknown error while parsing arguments\n");
393
538
exitstatus = EXIT_FAILURE;
394
goto end;
539
goto fallback;
395
540
}
396
541
}
397
542
402
547
for(char **a = p->argv; *a != NULL; a++){
403
548
fprintf(stderr, "\tArg: %s\n", *a);
404
549
}
550
fprintf(stderr, "...and %u environment variables\n", p->envc);
551
for(char **a = p->environ; *a != NULL; a++){
552
fprintf(stderr, "\t%s\n", *a);
553
}
405
554
}
406
555
}
407
556
414
563
if (ret == -1){
415
564
perror("setgid");
416
565
}
566
567
if (plugindir == NULL){
568
dir = opendir(PDIR);
569
} else {
570
dir = opendir(plugindir);
571
}
417
572
418
dir = opendir(plugindir);
419
573
if(dir == NULL){
420
574
perror("Could not open plugin dir");
421
575
exitstatus = EXIT_FAILURE;
422
goto end;
576
goto fallback;
423
577
}
424
578
425
579
/* Set the FD_CLOEXEC flag on the directory, if possible */
430
584
if(ret < 0){
431
585
perror("set_cloexec_flag");
432
586
exitstatus = EXIT_FAILURE;
433
goto end;
587
goto fallback;
434
588
}
435
589
}
436
590
}
445
599
if (errno == EBADF){
446
600
perror("readdir");
447
601
exitstatus = EXIT_FAILURE;
448
goto end;
602
goto fallback;
449
603
}
450
604
break;
451
605
}
496
650
continue;
497
651
}
498
652
}
499
500
char *filename = malloc(d_name_len + strlen(plugindir) + 2);
501
if (filename == NULL){
502
perror("malloc");
653
654
char *filename;
655
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
656
if(ret < 0){
657
perror("asprintf");
503
658
continue;
504
659
}
505
strcpy(filename, plugindir); /* Spurious warning */
506
strcat(filename, "/"); /* Spurious warning */
507
strcat(filename, dirst->d_name); /* Spurious warning */
508
660
509
661
ret = stat(filename, &st);
510
662
if (ret == -1){
521
673
free(filename);
522
674
continue;
523
675
}
524
if(getplugin(dirst->d_name, &plugin_list)->disabled){
676
plugin *p = getplugin(dirst->d_name, &plugin_list);
677
if(p == NULL){
678
perror("getplugin");
679
free(filename);
680
continue;
681
}
682
if(p->disabled){
525
683
if(debug){
526
684
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
527
685
dirst->d_name);
529
687
free(filename);
530
688
continue;
531
689
}
532
plugin *p = getplugin(dirst->d_name, &plugin_list);
533
690
{
534
691
/* Add global arguments to argument list for this plugin */
535
692
plugin *g = getplugin(NULL, &plugin_list);
536
for(char **a = g->argv + 1; *a != NULL; a++){
537
addargument(p, *a);
538
}
539
}
540
int pipefd[2];
693
if(g != NULL){
694
for(char **a = g->argv + 1; *a != NULL; a++){
695
if(not add_argument(p, *a)){
696
perror("add_argument");
697
}
698
}
699
/* Add global environment variables */
700
for(char **e = g->environ; *e != NULL; e++){
701
if(not add_environment(p, *e)){
702
perror("add_environment");
703
}
704
}
705
}
706
}
707
/* If this plugin has any environment variables, we will call
708
using execve and need to duplicate the environment from this
709
process, too. */
710
if(p->environ[0] != NULL){
711
for(char **e = environ; *e != NULL; e++){
712
char *copy = strdup(*e);
713
if(copy == NULL){
714
perror("strdup");
715
continue;
716
}
717
if(not add_environment(p, copy)){
718
perror("add_environment");
719
}
720
}
721
}
722
723
int pipefd[2];
541
724
ret = pipe(pipefd);
542
725
if (ret == -1){
543
726
perror("pipe");
544
727
exitstatus = EXIT_FAILURE;
545
goto end;
728
goto fallback;
546
729
}
547
730
ret = set_cloexec_flag(pipefd[0]);
548
731
if(ret < 0){
549
732
perror("set_cloexec_flag");
550
733
exitstatus = EXIT_FAILURE;
551
goto end;
734
goto fallback;
552
735
}
553
736
ret = set_cloexec_flag(pipefd[1]);
554
737
if(ret < 0){
555
738
perror("set_cloexec_flag");
556
739
exitstatus = EXIT_FAILURE;
557
goto end;
740
goto fallback;
558
741
}
559
742
/* Block SIGCHLD until process is safely in process list */
560
743
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
561
744
if(ret < 0){
562
745
perror("sigprocmask");
563
746
exitstatus = EXIT_FAILURE;
564
goto end;
747
goto fallback;
565
748
}
566
749
// Starting a new process to be watched
567
750
pid_t pid = fork();
568
751
if(pid == -1){
569
752
perror("fork");
570
753
exitstatus = EXIT_FAILURE;
571
goto end;
754
goto fallback;
572
755
}
573
756
if(pid == 0){
574
757
/* this is the child process */
594
777
above and must now close it manually here. */
595
778
closedir(dir);
596
779
}
597
if(execv(filename, p->argv) < 0){
598
perror("execv");
599
_exit(EXIT_FAILURE);
780
if(p->environ[0] == NULL){
781
if(execv(filename, p->argv) < 0){
782
perror("execv");
783
_exit(EXIT_FAILURE);
784
}
785
} else {
786
if(execve(filename, p->argv, p->environ) < 0){
787
perror("execve");
788
_exit(EXIT_FAILURE);
789
}
600
790
}
601
791
/* no return */
602
792
}
611
801
perror("sigprocmask");
612
802
}
613
803
exitstatus = EXIT_FAILURE;
614
goto end;
804
goto fallback;
615
805
}
616
806
617
807
*new_process = (struct process){ .pid = pid,
625
815
if(ret < 0){
626
816
perror("sigprocmask");
627
817
exitstatus = EXIT_FAILURE;
628
goto end;
818
goto fallback;
629
819
}
630
820
631
821
FD_SET(new_process->fd, &rfds_all);
635
825
}
636
826
637
827
}
638
639
/* Free the plugin list */
640
for(plugin *next; plugin_list != NULL; plugin_list = next){
641
next = plugin_list->next;
642
free(plugin_list->argv);
643
free(plugin_list);
644
}
828
829
free_plugin_list(plugin_list);
830
plugin_list = NULL;
645
831
646
832
closedir(dir);
647
833
dir = NULL;
657
843
if (select_ret == -1){
658
844
perror("select");
659
845
exitstatus = EXIT_FAILURE;
660
goto end;
846
goto fallback;
661
847
}
662
848
/* OK, now either a process completed, or something can be read
663
849
from one of them */
685
871
/* Remove the plugin */
686
872
FD_CLR(proc->fd, &rfds_all);
687
873
/* Block signal while modifying process_list */
688
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
874
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
689
875
if(ret < 0){
690
876
perror("sigprocmask");
691
877
exitstatus = EXIT_FAILURE;
692
goto end;
878
goto fallback;
693
879
}
694
880
/* Delete this process entry from the list */
695
881
if(process_list == proc){
719
905
}
720
906
/* This process exited nicely, so print its buffer */
721
907
722
bool bret = print_out_password(proc->buffer, proc->buffer_length);
908
bool bret = print_out_password(proc->buffer,
909
proc->buffer_length);
723
910
if(not bret){
724
911
perror("print_out_password");
725
912
exitstatus = EXIT_FAILURE;
726
913
}
727
goto end;
914
goto fallback;
728
915
}
729
916
/* This process has not completed. Does it have any output? */
730
917
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
738
925
if (proc->buffer == NULL){
739
926
perror("malloc");
740
927
exitstatus = EXIT_FAILURE;
741
goto end;
928
goto fallback;
742
929
}
743
930
proc->buffer_size += BUFFER_SIZE;
744
931
}
759
946
}
760
947
761
948
762
end:
949
fallback:
763
950
764
951
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
765
/* Fallback if all plugins failed, none are found or an error occured */
952
/* Fallback if all plugins failed, none are found or an error
953
occured */
766
954
bool bret;
767
955
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
768
956
char *passwordbuffer = getpass("Password: ");
770
958
if(not bret){
771
959
perror("print_out_password");
772
960
exitstatus = EXIT_FAILURE;
773
goto end;
774
961
}
775
962
}
776
963
777
964
/* Restore old signal handler */
778
sigaction(SIGCHLD, &old_sigchld_action, NULL);
779
780
free(custom_argv);
781
782
/* Free the plugin list */
783
for(plugin *next; plugin_list != NULL; plugin_list = next){
784
next = plugin_list->next;
785
free(plugin_list->argv);
786
free(plugin_list);
787
}
965
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
966
if(ret == -1){
967
perror("sigaction");
968
exitstatus = EXIT_FAILURE;
969
}
970
971
if(custom_argv != NULL){
972
for(char **arg = custom_argv+1; *arg != NULL; arg++){
973
free(*arg);
974
}
975
free(custom_argv);
976
}
977
free_plugin_list(plugin_list);
788
978
789
979
if(dir != NULL){
790
980
closedir(dir);
810
1000
if(errno != ECHILD){
811
1001
perror("wait");
812
1002
}
1003
1004
free(plugindir);
1005
free(argfile);
813
1006
814
1007
return exitstatus;
815
1008
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0