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- Committer: Teddy Hogeborn
- Date: 2008-09-05 07:11:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20080905071124-9dq11jq5rfd6zfxf
* Makefile: Changed to use symbolic instead of octal modes throughout.
(KEYDIR): New variable for the key directory.
(install-server): Bug fix: remove "--parents" from install args.
(install-client): Bug fix: - '' - Also create key directory. Do
not chmod plugin dir. Create custom plugin directory
if not the same as normal plugin directory. Add
"--dir" option to "mandos-keygen". Add note about
running "mandos-keygen --password".
(uninstall-server): Do not depend on the installed server binary,
since this made it impossible to do a purge
after an uninstall.
(purge-client): Shred seckey.txt. Use $(KEYDIR).
* README: Improved wording.
* initramfs-tools-hook: Use a loop to find prefix. Also find keydir.
Remove "${DESTDIR}" from "copy_exec". Do not
try to copy literal "*" if no custom plugins
are found. Copy key files from keydir, not
config dir. Only repair mode on directories
that actually exist. Do not run chmod if
nothing needs repairing.
* plugin-runner.conf: New file.
(KEYDIR): New variable for the key directory.
(install-server): Bug fix: remove "--parents" from install args.
(install-client): Bug fix: - '' - Also create key directory. Do
not chmod plugin dir. Create custom plugin directory
if not the same as normal plugin directory. Add
"--dir" option to "mandos-keygen". Add note about
running "mandos-keygen --password".
(uninstall-server): Do not depend on the installed server binary,
since this made it impossible to do a purge
after an uninstall.
(purge-client): Shred seckey.txt. Use $(KEYDIR).
* README: Improved wording.
* initramfs-tools-hook: Use a loop to find prefix. Also find keydir.
Remove "${DESTDIR}" from "copy_exec". Do not
try to copy literal "*" if no custom plugins
are found. Copy key files from keydir, not
config dir. Only repair mode on directories
that actually exist. Do not run chmod if
nothing needs repairing.
* plugin-runner.conf: New file.
- files added:
- .bzrignore
- files modified:
- Makefile
added
removed
plugin-runner.c
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>";
72
74
73
struct process;
74
75
typedef struct process{
75
struct plugin;
76
77
typedef struct plugin{
78
char *name; /* can be NULL or any plugin name */
79
char **argv;
80
int argc;
81
char **environ;
82
int envc;
83
bool disabled;
84
85
/* Variables used for running processes*/
76
86
pid_t pid;
77
87
int fd;
78
88
char *buffer;
81
91
bool eof;
82
92
volatile bool completed;
83
93
volatile int status;
84
struct process *next;
85
} process;
86
87
typedef struct plugin{
88
char *name; /* can be NULL or any plugin name */
89
char **argv;
90
int argc;
91
char **environ;
92
int envc;
93
bool disabled;
94
94
struct plugin *next;
95
95
} plugin;
96
96
97
static plugin *getplugin(char *name, plugin **plugin_list){
98
for (plugin *p = *plugin_list; p != NULL; p = p->next){
97
static plugin *plugin_list = NULL;
98
99
/* Gets a existing plugin based on name,
100
or if none is found, creates a new one */
101
static plugin *getplugin(char *name){
102
/* Check for exiting plugin with that name */
103
for (plugin *p = plugin_list; p != NULL; p = p->next){
99
104
if ((p->name == name)
100
105
or (p->name and name and (strcmp(p->name, name) == 0))){
101
106
return p;
113
118
return NULL;
114
119
}
115
120
}
116
121
117
122
*new_plugin = (plugin) { .name = copy_name,
118
123
.argc = 1,
119
.envc = 0,
120
124
.disabled = false,
121
.next = *plugin_list };
125
.next = plugin_list };
122
126
123
127
new_plugin->argv = malloc(sizeof(char *) * 2);
124
128
if (new_plugin->argv == NULL){
128
132
}
129
133
new_plugin->argv[0] = copy_name;
130
134
new_plugin->argv[1] = NULL;
131
135
132
136
new_plugin->environ = malloc(sizeof(char *));
133
137
if(new_plugin->environ == NULL){
134
138
free(copy_name);
137
141
return NULL;
138
142
}
139
143
new_plugin->environ[0] = NULL;
144
140
145
/* Append the new plugin to the list */
141
*plugin_list = new_plugin;
146
plugin_list = new_plugin;
142
147
return new_plugin;
143
148
}
144
149
174
179
}
175
180
176
181
/* Add to a plugin's environment */
177
static bool add_environment(plugin *p, const char *def){
182
static bool add_environment(plugin *p, const char *def, bool replace){
178
183
if(p == NULL){
179
184
return false;
180
185
}
186
/* namelen = length of name of environment variable */
187
size_t namelen = (size_t)(strchrnul(def, '=') - def);
188
/* Search for this environment variable */
189
for(char **e = p->environ; *e != NULL; e++){
190
if(strncmp(*e, def, namelen+1) == 0){
191
/* It already exists */
192
if(replace){
193
char *new = realloc(*e, strlen(def));
194
if(new == NULL){
195
return false;
196
}
197
*e = new;
198
strcpy(*e, def);
199
}
200
return true;
201
}
202
}
181
203
return add_to_char_array(def, &(p->environ), &(p->envc));
182
204
}
183
205
184
185
206
/*
186
207
* Based on the example in the GNU LibC manual chapter 13.13 "File
187
208
* Descriptor Flags".
198
219
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
199
220
}
200
221
201
process *process_list = NULL;
202
222
203
223
/* Mark processes as completed when they exit, and save their exit
204
224
status. */
205
225
void handle_sigchld(__attribute__((unused)) int sig){
206
226
while(true){
207
process *proc = process_list;
227
plugin *proc = plugin_list;
208
228
int status;
209
229
pid_t pid = waitpid(-1, &status, WNOHANG);
210
230
if(pid == 0){
232
252
}
233
253
}
234
254
255
/* Prints out a password to stdout */
235
256
bool print_out_password(const char *buffer, size_t length){
236
257
ssize_t ret;
237
258
if(length>0 and buffer[length-1] == '\n'){
247
268
return true;
248
269
}
249
270
250
static void free_plugin_list(plugin *plugin_list){
251
for(plugin *next; plugin_list != NULL; plugin_list = next){
252
next = plugin_list->next;
253
for(char **arg = plugin_list->argv; *arg != NULL; arg++){
254
free(*arg);
255
}
256
free(plugin_list->argv);
257
for(char **env = plugin_list->environ; *env != NULL; env++){
258
free(*env);
259
}
260
free(plugin_list->environ);
261
free(plugin_list);
271
/* Removes and free a plugin from the plugin list */
272
static void free_plugin(plugin *plugin_node){
273
274
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
275
free(*arg);
276
}
277
free(plugin_node->argv);
278
for(char **env = plugin_node->environ; *env != NULL; env++){
279
free(*env);
280
}
281
free(plugin_node->environ);
282
free(plugin_node->buffer);
283
284
/* Removes the plugin from the singly-linked list */
285
if(plugin_node == plugin_list){
286
/* First one - simple */
287
plugin_list = plugin_list->next;
288
} else {
289
/* Second one or later */
290
for(plugin *p = plugin_list; p != NULL; p = p->next){
291
if(p->next == plugin_node){
292
p->next = plugin_node->next;
293
break;
294
}
295
}
296
}
297
298
free(plugin_node);
299
}
300
301
static void free_plugin_list(void){
302
while(plugin_list != NULL){
303
free_plugin(plugin_list);
262
304
}
263
305
}
264
306
265
307
int main(int argc, char *argv[]){
266
const char *plugindir = "/lib/mandos/plugins.d";
267
const char *argfile = ARGFILE;
308
char *plugindir = NULL;
309
char *argfile = NULL;
268
310
FILE *conffp;
269
311
size_t d_name_len;
270
312
DIR *dir = NULL;
302
344
{ .name = "global-options", .key = 'g',
303
345
.arg = "OPTION[,OPTION[,...]]",
304
346
.doc = "Options passed to all plugins" },
305
{ .name = "global-envs", .key = 'e',
347
{ .name = "global-env", .key = 'G',
306
348
.arg = "VAR=value",
307
349
.doc = "Environment variable passed to all plugins" },
308
350
{ .name = "options-for", .key = 'o',
309
351
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
310
352
.doc = "Options passed only to specified plugin" },
311
{ .name = "envs-for", .key = 'f',
353
{ .name = "env-for", .key = 'E',
312
354
.arg = "PLUGIN:ENV=value",
313
355
.doc = "Environment variable passed to specified plugin" },
314
356
{ .name = "disable", .key = 'd',
315
357
.arg = "PLUGIN",
316
358
.doc = "Disable a specific plugin", .group = 1 },
359
{ .name = "enable", .key = 'e',
360
.arg = "PLUGIN",
361
.doc = "Enable a specific plugin", .group = 1 },
317
362
{ .name = "plugin-dir", .key = 128,
318
363
.arg = "DIRECTORY",
319
364
.doc = "Specify a different plugin directory", .group = 2 },
320
{ .name = "userid", .key = 129,
321
.arg = "ID", .flags = 0,
322
.doc = "User ID the plugins will run as", .group = 2 },
323
{ .name = "groupid", .key = 130,
324
.arg = "ID", .flags = 0,
325
.doc = "Group ID the plugins will run as", .group = 2 },
326
{ .name = "debug", .key = 131,
327
.doc = "Debug mode", .group = 3 },
365
{ .name = "config-file", .key = 129,
366
.arg = "FILE",
367
.doc = "Specify a different configuration file", .group = 2 },
368
{ .name = "userid", .key = 130,
369
.arg = "ID", .flags = 0,
370
.doc = "User ID the plugins will run as", .group = 3 },
371
{ .name = "groupid", .key = 131,
372
.arg = "ID", .flags = 0,
373
.doc = "Group ID the plugins will run as", .group = 3 },
374
{ .name = "debug", .key = 132,
375
.doc = "Debug mode", .group = 4 },
328
376
{ .name = NULL }
329
377
};
330
378
331
error_t parse_opt (int key, char *arg, struct argp_state *state) {
332
/* Get the INPUT argument from `argp_parse', which we know is a
333
pointer to our plugin list pointer. */
334
plugin **plugins = state->input;
379
error_t parse_opt (int key, char *arg, __attribute__((unused))
380
struct argp_state *state) {
335
381
switch (key) {
336
case 'g':
382
case 'g': /* --global-options */
337
383
if (arg != NULL){
338
384
char *p;
339
385
while((p = strsep(&arg, ",")) != NULL){
340
386
if(p[0] == '\0'){
341
387
continue;
342
388
}
343
if(not add_argument(getplugin(NULL, plugins), p)){
389
if(not add_argument(getplugin(NULL), p)){
344
390
perror("add_argument");
345
391
return ARGP_ERR_UNKNOWN;
346
392
}
347
393
}
348
394
}
349
395
break;
350
case 'e':
396
case 'G': /* --global-env */
351
397
if(arg == NULL){
352
398
break;
353
399
}
356
402
if(envdef == NULL){
357
403
break;
358
404
}
359
if(not add_environment(getplugin(NULL, plugins), envdef)){
405
if(not add_environment(getplugin(NULL), envdef, true)){
360
406
perror("add_environment");
361
407
}
362
408
}
363
409
break;
364
case 'o':
410
case 'o': /* --options-for */
365
411
if (arg != NULL){
366
412
char *p_name = strsep(&arg, ":");
367
413
if(p_name[0] == '\0'){
377
423
if(p[0] == '\0'){
378
424
continue;
379
425
}
380
if(not add_argument(getplugin(p_name, plugins), p)){
426
if(not add_argument(getplugin(p_name), p)){
381
427
perror("add_argument");
382
428
return ARGP_ERR_UNKNOWN;
383
429
}
385
431
}
386
432
}
387
433
break;
388
case 'f':
434
case 'E': /* --env-for */
389
435
if(arg == NULL){
390
436
break;
391
437
}
399
445
break;
400
446
}
401
447
envdef++;
402
if(not add_environment(getplugin(p_name, plugins), envdef)){
448
if(not add_environment(getplugin(p_name), envdef, true)){
403
449
perror("add_environment");
404
450
}
405
451
}
406
452
break;
407
case 'd':
453
case 'd': /* --disable */
408
454
if (arg != NULL){
409
plugin *p = getplugin(arg, plugins);
455
plugin *p = getplugin(arg);
410
456
if(p == NULL){
411
457
return ARGP_ERR_UNKNOWN;
412
458
}
413
459
p->disabled = true;
414
460
}
415
461
break;
416
case 128:
417
plugindir = arg;
418
break;
419
case 129:
462
case 'e': /* --enable */
463
if (arg != NULL){
464
plugin *p = getplugin(arg);
465
if(p == NULL){
466
return ARGP_ERR_UNKNOWN;
467
}
468
p->disabled = false;
469
}
470
break;
471
case 128: /* --plugin-dir */
472
plugindir = strdup(arg);
473
if(plugindir == NULL){
474
perror("strdup");
475
}
476
break;
477
case 129: /* --config-file */
478
/* This is already done by parse_opt_config_file() */
479
break;
480
case 130: /* --userid */
420
481
uid = (uid_t)strtol(arg, NULL, 10);
421
482
break;
422
case 130:
483
case 131: /* --groupid */
423
484
gid = (gid_t)strtol(arg, NULL, 10);
424
485
break;
425
case 131:
486
case 132: /* --debug */
426
487
debug = true;
427
488
break;
428
489
case ARGP_KEY_ARG:
436
497
return 0;
437
498
}
438
499
439
plugin *plugin_list = NULL;
500
/* This option parser is the same as parse_opt() above, except it
501
ignores everything but the --config-file option. */
502
error_t parse_opt_config_file (int key, char *arg,
503
__attribute__((unused))
504
struct argp_state *state) {
505
switch (key) {
506
case 'g': /* --global-options */
507
case 'G': /* --global-env */
508
case 'o': /* --options-for */
509
case 'E': /* --env-for */
510
case 'd': /* --disable */
511
case 'e': /* --enable */
512
case 128: /* --plugin-dir */
513
break;
514
case 129: /* --config-file */
515
argfile = strdup(arg);
516
if(argfile == NULL){
517
perror("strdup");
518
}
519
break;
520
case 130: /* --userid */
521
case 131: /* --groupid */
522
case 132: /* --debug */
523
case ARGP_KEY_ARG:
524
case ARGP_KEY_END:
525
break;
526
default:
527
return ARGP_ERR_UNKNOWN;
528
}
529
return 0;
530
}
440
531
441
struct argp argp = { .options = options, .parser = parse_opt,
442
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
532
struct argp argp = { .options = options,
533
.parser = parse_opt_config_file,
534
.args_doc = "",
443
535
.doc = "Mandos plugin runner -- Run plugins" };
444
536
445
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
537
/* Parse using the parse_opt_config_file in order to get the custom
538
config file location, if any. */
539
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
446
540
if (ret == ARGP_ERR_UNKNOWN){
447
541
fprintf(stderr, "Unknown error while parsing arguments\n");
448
542
exitstatus = EXIT_FAILURE;
449
543
goto fallback;
450
544
}
451
452
conffp = fopen(argfile, "r");
545
546
/* Reset to the normal argument parser */
547
argp.parser = parse_opt;
548
549
/* Open the configfile if available */
550
if (argfile == NULL){
551
conffp = fopen(AFILE, "r");
552
} else {
553
conffp = fopen(argfile, "r");
554
}
453
555
if(conffp != NULL){
454
556
char *org_line = NULL;
455
557
char *p, *arg, *new_arg, *line;
467
569
}
468
570
custom_argv[0] = argv[0];
469
571
custom_argv[1] = NULL;
470
572
573
/* for each line in the config file, strip whitespace and ignore
574
commented text */
471
575
while(true){
472
576
sret = getline(&org_line, &size, conffp);
473
577
if(sret == -1){
481
585
continue;
482
586
}
483
587
new_arg = strdup(p);
484
588
if(new_arg == NULL){
589
perror("strdup");
590
exitstatus = EXIT_FAILURE;
591
free(org_line);
592
goto fallback;
593
}
594
485
595
custom_argc += 1;
486
596
custom_argv = realloc(custom_argv, sizeof(char *)
487
597
* ((unsigned int) custom_argc + 1));
496
606
}
497
607
}
498
608
free(org_line);
499
} else{
609
} else {
500
610
/* Check for harmful errors and go to fallback. Other errors might
501
611
not affect opening plugins */
502
612
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
505
615
goto fallback;
506
616
}
507
617
}
508
618
/* If there was any arguments from configuration file,
619
pass them to parser as command arguments */
509
620
if(custom_argv != NULL){
510
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
621
ret = argp_parse (&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
622
0, NULL);
511
623
if (ret == ARGP_ERR_UNKNOWN){
512
624
fprintf(stderr, "Unknown error while parsing arguments\n");
513
625
exitstatus = EXIT_FAILURE;
515
627
}
516
628
}
517
629
630
/* Parse actual command line arguments, to let them override the
631
config file */
632
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
633
if (ret == ARGP_ERR_UNKNOWN){
634
fprintf(stderr, "Unknown error while parsing arguments\n");
635
exitstatus = EXIT_FAILURE;
636
goto fallback;
637
}
638
518
639
if(debug){
519
640
for(plugin *p = plugin_list; p != NULL; p=p->next){
520
641
fprintf(stderr, "Plugin: %s has %d arguments\n",
529
650
}
530
651
}
531
652
653
/* Strip permissions down to nobody */
532
654
ret = setuid(uid);
533
655
if (ret == -1){
534
656
perror("setuid");
535
}
536
657
}
537
658
setgid(gid);
538
659
if (ret == -1){
539
660
perror("setgid");
540
661
}
541
662
542
dir = opendir(plugindir);
663
if (plugindir == NULL){
664
dir = opendir(PDIR);
665
} else {
666
dir = opendir(plugindir);
667
}
668
543
669
if(dir == NULL){
544
670
perror("Could not open plugin dir");
545
671
exitstatus = EXIT_FAILURE;
561
687
562
688
FD_ZERO(&rfds_all);
563
689
690
/* Read and execute any executable in the plugin directory*/
564
691
while(true){
565
692
dirst = readdir(dir);
566
693
567
// All directory entries have been processed
694
/* All directory entries have been processed */
568
695
if(dirst == NULL){
569
696
if (errno == EBADF){
570
697
perror("readdir");
576
703
577
704
d_name_len = strlen(dirst->d_name);
578
705
579
// Ignore dotfiles, backup files and other junk
706
/* Ignore dotfiles, backup files and other junk */
580
707
{
581
708
bool bad_name = false;
582
709
597
724
break;
598
725
}
599
726
}
600
601
727
if(bad_name){
602
728
continue;
603
729
}
604
605
730
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
606
731
size_t suf_len = strlen(*suf);
607
732
if((d_name_len >= suf_len)
634
759
free(filename);
635
760
continue;
636
761
}
637
762
763
/* Ignore non-executable files */
638
764
if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
639
765
if(debug){
640
766
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
643
769
free(filename);
644
770
continue;
645
771
}
646
plugin *p = getplugin(dirst->d_name, &plugin_list);
772
773
plugin *p = getplugin(dirst->d_name);
647
774
if(p == NULL){
648
775
perror("getplugin");
649
776
free(filename);
659
786
}
660
787
{
661
788
/* Add global arguments to argument list for this plugin */
662
plugin *g = getplugin(NULL, &plugin_list);
789
plugin *g = getplugin(NULL);
663
790
if(g != NULL){
664
791
for(char **a = g->argv + 1; *a != NULL; a++){
665
792
if(not add_argument(p, *a)){
668
795
}
669
796
/* Add global environment variables */
670
797
for(char **e = g->environ; *e != NULL; e++){
671
if(not add_environment(p, *e)){
798
if(not add_environment(p, *e, false)){
672
799
perror("add_environment");
673
800
}
674
801
}
679
806
process, too. */
680
807
if(p->environ[0] != NULL){
681
808
for(char **e = environ; *e != NULL; e++){
682
char *copy = strdup(*e);
683
if(copy == NULL){
684
perror("strdup");
685
continue;
686
}
687
if(not add_environment(p, copy)){
809
if(not add_environment(p, *e, false)){
688
810
perror("add_environment");
689
811
}
690
812
}
697
819
exitstatus = EXIT_FAILURE;
698
820
goto fallback;
699
821
}
822
/* Ask OS to automatic close the pipe on exec */
700
823
ret = set_cloexec_flag(pipefd[0]);
701
824
if(ret < 0){
702
825
perror("set_cloexec_flag");
716
839
exitstatus = EXIT_FAILURE;
717
840
goto fallback;
718
841
}
719
// Starting a new process to be watched
842
/* Starting a new process to be watched */
720
843
pid_t pid = fork();
721
844
if(pid == -1){
722
845
perror("fork");
760
883
}
761
884
/* no return */
762
885
}
763
/* parent process */
886
/* Parent process */
887
close(pipefd[1]); /* Close unused write end of pipe */
764
888
free(filename);
765
close(pipefd[1]); /* close unused write end of pipe */
766
process *new_process = malloc(sizeof(process));
767
if (new_process == NULL){
768
perror("malloc");
889
plugin *new_plugin = getplugin(dirst->d_name);
890
if (new_plugin == NULL){
891
perror("getplugin");
769
892
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
770
893
if(ret < 0){
771
perror("sigprocmask");
894
perror("sigprocmask");
772
895
}
773
896
exitstatus = EXIT_FAILURE;
774
897
goto fallback;
775
898
}
776
899
777
*new_process = (struct process){ .pid = pid,
778
.fd = pipefd[0],
779
.next = process_list };
780
// List handling
781
process_list = new_process;
900
new_plugin->pid = pid;
901
new_plugin->fd = pipefd[0];
902
782
903
/* Unblock SIGCHLD so signal handler can be run if this process
783
904
has already completed */
784
905
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
788
909
goto fallback;
789
910
}
790
911
791
FD_SET(new_process->fd, &rfds_all);
912
FD_SET(new_plugin->fd, &rfds_all);
792
913
793
if (maxfd < new_process->fd){
794
maxfd = new_process->fd;
914
if (maxfd < new_plugin->fd){
915
maxfd = new_plugin->fd;
795
916
}
796
917
797
918
}
798
919
799
free_plugin_list(plugin_list);
800
plugin_list = NULL;
801
802
920
closedir(dir);
803
921
dir = NULL;
804
805
if (process_list == NULL){
806
fprintf(stderr, "No plugin processes started. Incorrect plugin"
807
" directory?\n");
808
process_list = NULL;
922
923
for(plugin *p = plugin_list; p != NULL; p = p->next){
924
if(p->pid != 0){
925
break;
926
}
927
if(p->next == NULL){
928
fprintf(stderr, "No plugin processes started. Incorrect plugin"
929
" directory?\n");
930
free_plugin_list();
931
}
809
932
}
810
while(process_list){
933
934
/* Main loop while running plugins exist */
935
while(plugin_list){
811
936
fd_set rfds = rfds_all;
812
937
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
813
938
if (select_ret == -1){
817
942
}
818
943
/* OK, now either a process completed, or something can be read
819
944
from one of them */
820
for(process *proc = process_list; proc ; proc = proc->next){
945
for(plugin *proc = plugin_list; proc != NULL; proc = proc->next){
821
946
/* Is this process completely done? */
822
947
if(proc->eof and proc->completed){
823
948
/* Only accept the plugin output if it exited cleanly */
824
949
if(not WIFEXITED(proc->status)
825
950
or WEXITSTATUS(proc->status) != 0){
826
951
/* Bad exit by plugin */
952
827
953
if(debug){
828
954
if(WIFEXITED(proc->status)){
829
955
fprintf(stderr, "Plugin %u exited with status %d\n",
838
964
(unsigned int) (proc->pid));
839
965
}
840
966
}
967
841
968
/* Remove the plugin */
842
969
FD_CLR(proc->fd, &rfds_all);
970
843
971
/* Block signal while modifying process_list */
844
972
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
845
973
if(ret < 0){
847
975
exitstatus = EXIT_FAILURE;
848
976
goto fallback;
849
977
}
850
/* Delete this process entry from the list */
851
if(process_list == proc){
852
/* First one - simple */
853
process_list = proc->next;
854
} else {
855
/* Second one or later */
856
for(process *p = process_list; p != NULL; p = p->next){
857
if(p->next == proc){
858
p->next = proc->next;
859
break;
860
}
861
}
862
}
978
free_plugin(proc);
863
979
/* We are done modifying process list, so unblock signal */
864
980
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
865
981
NULL);
866
982
if(ret < 0){
867
983
perror("sigprocmask");
868
}
869
free(proc->buffer);
870
free(proc);
871
/* We deleted this process from the list, so we can't go
872
proc->next. Therefore, start over from the beginning of
873
the process list */
874
break;
984
exitstatus = EXIT_FAILURE;
985
goto fallback;
986
}
987
988
if(plugin_list == NULL){
989
break;
990
}
991
continue;
875
992
}
993
876
994
/* This process exited nicely, so print its buffer */
877
995
878
996
bool bret = print_out_password(proc->buffer,
883
1001
}
884
1002
goto fallback;
885
1003
}
1004
886
1005
/* This process has not completed. Does it have any output? */
887
1006
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
888
1007
/* This process had nothing to say at this time */
918
1037
919
1038
fallback:
920
1039
921
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
1040
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
922
1041
/* Fallback if all plugins failed, none are found or an error
923
1042
occured */
924
1043
bool bret;
944
1063
}
945
1064
free(custom_argv);
946
1065
}
947
free_plugin_list(plugin_list);
948
1066
949
1067
if(dir != NULL){
950
1068
closedir(dir);
951
1069
}
952
1070
953
1071
/* Free the process list and kill the processes */
954
for(process *next; process_list != NULL; process_list = next){
955
next = process_list->next;
956
close(process_list->fd);
957
ret = kill(process_list->pid, SIGTERM);
958
if(ret == -1 and errno != ESRCH){
959
/* set-uid proccesses migth not get closed */
960
perror("kill");
1072
for(plugin *p = plugin_list; p != NULL; p = p->next){
1073
if(p->pid != 0){
1074
close(p->fd);
1075
ret = kill(p->pid, SIGTERM);
1076
if(ret == -1 and errno != ESRCH){
1077
/* Set-uid proccesses might not get closed */
1078
perror("kill");
1079
}
961
1080
}
962
free(process_list->buffer);
963
free(process_list);
964
1081
}
965
1082
966
1083
/* Wait for any remaining child processes to terminate */
970
1087
if(errno != ECHILD){
971
1088
perror("wait");
972
1089
}
1090
1091
free_plugin_list();
1092
1093
free(plugindir);
1094
free(argfile);
973
1095
974
1096
return exitstatus;
975
1097
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0