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- Committer: Teddy Hogeborn
- Date: 2009-09-07 23:48:17 UTC
- Revision ID: teddy@fukt.bsnet.se-20090907234817-op1lgg9gpruejsiv
* initramfs-tools-hook: Bug fix: Really install user-supplied plugins.
Bug fix: Warn about empty plugin directory.
Bug fix: Warn about empty plugin directory.
- files removed:
- dbus-mandos.conf
- files modified:
- Makefile
added
removed
plugin-runner.c
23
23
*/
24
24
25
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
asprintf(), O_CLOEXEC */
26
asprintf() */
27
27
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
29
realloc() */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
EXIT_SUCCESS, realloc() */
30
30
#include <stdbool.h> /* bool, true, false */
31
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, fdopendir(), stat(), struct
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
34
34
stat, waitpid(), WIFEXITED(),
35
35
WEXITSTATUS(), wait(), pid_t,
36
36
uid_t, gid_t, getuid(), getgid(),
42
42
WCOREDUMP() */
43
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
44
44
#include <iso646.h> /* and, or, not */
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
45
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
46
readdir(), closedir(), dirfd() */
47
47
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
48
48
fcntl(), setuid(), setgid(),
54
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
55
55
FD_CLOEXEC */
56
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal(), strcmp(), strncmp() */
57
strsignal() */
58
58
#include <errno.h> /* errno */
59
59
#include <argp.h> /* struct argp_option, struct
60
60
argp_state, struct argp,
68
68
*/
69
69
#include <errno.h> /* errno, EBADF */
70
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
71
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_IOERR,
72
EX_CONFIG, EX_UNAVAILABLE, EX_OK */
73
71
74
72
#define BUFFER_SIZE 256
75
73
104
102
/* Gets an existing plugin based on name,
105
103
or if none is found, creates a new one */
106
104
static plugin *getplugin(char *name){
107
/* Check for existing plugin with that name */
105
/* Check for exiting plugin with that name */
108
106
for(plugin *p = plugin_list; p != NULL; p = p->next){
109
107
if((p->name == name)
110
108
or (p->name and name and (strcmp(p->name, name) == 0))){
125
123
copy_name = strdup(name);
126
124
} while(copy_name == NULL and errno == EINTR);
127
125
if(copy_name == NULL){
128
int e = errno;
129
126
free(new_plugin);
130
errno = e;
131
127
return NULL;
132
128
}
133
129
}
141
137
new_plugin->argv = malloc(sizeof(char *) * 2);
142
138
} while(new_plugin->argv == NULL and errno == EINTR);
143
139
if(new_plugin->argv == NULL){
144
int e = errno;
145
140
free(copy_name);
146
141
free(new_plugin);
147
errno = e;
148
142
return NULL;
149
143
}
150
144
new_plugin->argv[0] = copy_name;
154
148
new_plugin->environ = malloc(sizeof(char *));
155
149
} while(new_plugin->environ == NULL and errno == EINTR);
156
150
if(new_plugin->environ == NULL){
157
int e = errno;
158
151
free(copy_name);
159
152
free(new_plugin->argv);
160
153
free(new_plugin);
161
errno = e;
162
154
return NULL;
163
155
}
164
156
new_plugin->environ[0] = NULL;
238
230
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
239
231
*/
240
232
static int set_cloexec_flag(int fd){
241
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
233
int ret = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
242
234
/* If reading the flags failed, return error indication now. */
243
235
if(ret < 0){
244
236
return ret;
245
237
}
246
238
/* Store modified flag word in the descriptor. */
247
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
248
ret | FD_CLOEXEC));
239
return TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD, ret | FD_CLOEXEC));
249
240
}
250
241
251
242
358
349
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
359
350
if(ret == -1){
360
351
perror("sigaddset");
361
exitstatus = EX_OSERR;
352
exitstatus = EXIT_FAILURE;
362
353
goto fallback;
363
354
}
364
355
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
365
356
if(ret == -1){
366
357
perror("sigaction");
367
exitstatus = EX_OSERR;
358
exitstatus = EXIT_FAILURE;
368
359
goto fallback;
369
360
}
370
361
402
393
.doc = "Group ID the plugins will run as", .group = 3 },
403
394
{ .name = "debug", .key = 132,
404
395
.doc = "Debug mode", .group = 4 },
405
/*
406
* These reproduce what we would get without ARGP_NO_HELP
407
*/
408
{ .name = "help", .key = '?',
409
.doc = "Give this help list", .group = -1 },
410
{ .name = "usage", .key = -3,
411
.doc = "Give a short usage message", .group = -1 },
412
{ .name = "version", .key = 'V',
413
.doc = "Print program version", .group = -1 },
414
396
{ .name = NULL }
415
397
};
416
398
417
error_t parse_opt(int key, char *arg, struct argp_state *state){
418
errno = 0;
399
error_t parse_opt(int key, char *arg, __attribute__((unused))
400
struct argp_state *state){
419
401
switch(key){
420
402
char *tmp;
421
403
intmax_t tmpmax;
422
404
case 'g': /* --global-options */
423
{
405
if(arg != NULL){
424
406
char *plugin_option;
425
407
while((plugin_option = strsep(&arg, ",")) != NULL){
408
if(plugin_option[0] == '\0'){
409
continue;
410
}
426
411
if(not add_argument(getplugin(NULL), plugin_option)){
427
break;
412
perror("add_argument");
413
return ARGP_ERR_UNKNOWN;
428
414
}
429
415
}
430
416
}
431
417
break;
432
418
case 'G': /* --global-env */
433
add_environment(getplugin(NULL), arg, true);
419
if(arg == NULL){
420
break;
421
}
422
if(not add_environment(getplugin(NULL), arg, true)){
423
perror("add_environment");
424
}
434
425
break;
435
426
case 'o': /* --options-for */
436
{
437
char *option_list = strchr(arg, ':');
438
if(option_list == NULL){
439
argp_error(state, "No colon in \"%s\"", arg);
440
errno = EINVAL;
441
break;
442
}
443
*option_list = '\0';
444
option_list++;
445
if(arg[0] == '\0'){
446
argp_error(state, "Empty plugin name");
447
errno = EINVAL;
448
break;
449
}
450
char *option;
451
while((option = strsep(&option_list, ",")) != NULL){
452
if(not add_argument(getplugin(arg), option)){
453
break;
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;
454
437
}
455
438
}
456
439
}
457
440
break;
458
441
case 'E': /* --env-for */
442
if(arg == NULL){
443
break;
444
}
459
445
{
460
446
char *envdef = strchr(arg, ':');
461
447
if(envdef == NULL){
462
argp_error(state, "No colon in \"%s\"", arg);
463
errno = EINVAL;
464
448
break;
465
449
}
466
450
*envdef = '\0';
467
envdef++;
468
if(arg[0] == '\0'){
469
argp_error(state, "Empty plugin name");
470
errno = EINVAL;
471
break;
451
if(not add_environment(getplugin(arg), envdef+1, true)){
452
perror("add_environment");
472
453
}
473
add_environment(getplugin(arg), envdef, true);
474
454
}
475
455
break;
476
456
case 'd': /* --disable */
477
{
457
if(arg != NULL){
478
458
plugin *p = getplugin(arg);
479
if(p != NULL){
480
p->disabled = true;
459
if(p == NULL){
460
return ARGP_ERR_UNKNOWN;
481
461
}
462
p->disabled = true;
482
463
}
483
464
break;
484
465
case 'e': /* --enable */
485
{
466
if(arg != NULL){
486
467
plugin *p = getplugin(arg);
487
if(p != NULL){
488
p->disabled = false;
468
if(p == NULL){
469
return ARGP_ERR_UNKNOWN;
489
470
}
471
p->disabled = false;
490
472
}
491
473
break;
492
474
case 128: /* --plugin-dir */
493
475
free(plugindir);
494
476
plugindir = strdup(arg);
477
if(plugindir == NULL){
478
perror("strdup");
479
}
495
480
break;
496
481
case 129: /* --config-file */
497
482
/* This is already done by parse_opt_config_file() */
498
483
break;
499
484
case 130: /* --userid */
485
errno = 0;
500
486
tmpmax = strtoimax(arg, &tmp, 10);
501
487
if(errno != 0 or tmp == arg or *tmp != '\0'
502
488
or tmpmax != (uid_t)tmpmax){
503
argp_error(state, "Bad user ID number: \"%s\", using %"
504
PRIdMAX, arg, (intmax_t)uid);
505
break;
489
fprintf(stderr, "Bad user ID number: \"%s\", using %"
490
PRIdMAX "\n", arg, (intmax_t)uid);
491
} else {
492
uid = (uid_t)tmpmax;
506
493
}
507
uid = (uid_t)tmpmax;
508
494
break;
509
495
case 131: /* --groupid */
496
errno = 0;
510
497
tmpmax = strtoimax(arg, &tmp, 10);
511
498
if(errno != 0 or tmp == arg or *tmp != '\0'
512
499
or tmpmax != (gid_t)tmpmax){
513
argp_error(state, "Bad group ID number: \"%s\", using %"
514
PRIdMAX, arg, (intmax_t)gid);
515
break;
500
fprintf(stderr, "Bad group ID number: \"%s\", using %"
501
PRIdMAX "\n", arg, (intmax_t)gid);
502
} else {
503
gid = (gid_t)tmpmax;
516
504
}
517
gid = (gid_t)tmpmax;
518
505
break;
519
506
case 132: /* --debug */
520
507
debug = true;
521
508
break;
522
/*
523
* These reproduce what we would get without ARGP_NO_HELP
524
*/
525
case '?': /* --help */
526
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
527
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
528
case -3: /* --usage */
529
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
530
argp_state_help(state, state->out_stream,
531
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
532
case 'V': /* --version */
533
fprintf(state->out_stream, "%s\n", argp_program_version);
534
exit(EXIT_SUCCESS);
535
break;
536
509
/*
537
510
* When adding more options before this line, remember to also add a
538
511
* "case" to the "parse_opt_config_file" function below.
541
514
/* Cryptsetup always passes an argument, which is an empty
542
515
string if "none" was specified in /etc/crypttab. So if
543
516
argument was empty, we ignore it silently. */
544
if(arg[0] == '\0'){
545
break;
517
if(arg[0] != '\0'){
518
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
546
519
}
520
break;
521
case ARGP_KEY_END:
522
break;
547
523
default:
548
524
return ARGP_ERR_UNKNOWN;
549
525
}
550
return errno; /* Set to 0 at start */
526
return 0;
551
527
}
552
528
553
529
/* This option parser is the same as parse_opt() above, except it
555
531
error_t parse_opt_config_file(int key, char *arg,
556
532
__attribute__((unused))
557
533
struct argp_state *state){
558
errno = 0;
559
534
switch(key){
560
535
case 'g': /* --global-options */
561
536
case 'G': /* --global-env */
568
543
case 129: /* --config-file */
569
544
free(argfile);
570
545
argfile = strdup(arg);
546
if(argfile == NULL){
547
perror("strdup");
548
}
571
549
break;
572
550
case 130: /* --userid */
573
551
case 131: /* --groupid */
574
552
case 132: /* --debug */
575
case '?': /* --help */
576
case -3: /* --usage */
577
case 'V': /* --version */
578
553
case ARGP_KEY_ARG:
554
case ARGP_KEY_END:
579
555
break;
580
556
default:
581
557
return ARGP_ERR_UNKNOWN;
582
558
}
583
return errno;
559
return 0;
584
560
}
585
561
586
562
struct argp argp = { .options = options,
590
566
591
567
/* Parse using parse_opt_config_file() in order to get the custom
592
568
config file location, if any. */
593
ret = argp_parse(&argp, argc, argv,
594
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
595
NULL, NULL);
596
switch(ret){
597
case 0:
598
break;
599
case ENOMEM:
600
default:
601
errno = ret;
602
perror("argp_parse");
603
exitstatus = EX_OSERR;
604
goto fallback;
605
case EINVAL:
606
exitstatus = EX_USAGE;
569
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
570
if(ret == ARGP_ERR_UNKNOWN){
571
fprintf(stderr, "Unknown error while parsing arguments\n");
572
exitstatus = EXIT_FAILURE;
607
573
goto fallback;
608
574
}
609
575
627
593
custom_argv = malloc(sizeof(char*) * 2);
628
594
if(custom_argv == NULL){
629
595
perror("malloc");
630
exitstatus = EX_OSERR;
596
exitstatus = EXIT_FAILURE;
631
597
goto fallback;
632
598
}
633
599
custom_argv[0] = argv[0];
650
616
new_arg = strdup(p);
651
617
if(new_arg == NULL){
652
618
perror("strdup");
653
exitstatus = EX_OSERR;
619
exitstatus = EXIT_FAILURE;
654
620
free(org_line);
655
621
goto fallback;
656
622
}
660
626
* ((unsigned int) custom_argc + 1));
661
627
if(custom_argv == NULL){
662
628
perror("realloc");
663
exitstatus = EX_OSERR;
629
exitstatus = EXIT_FAILURE;
664
630
free(org_line);
665
631
goto fallback;
666
632
}
673
639
} while(ret == EOF and errno == EINTR);
674
640
if(ret == EOF){
675
641
perror("fclose");
676
exitstatus = EX_IOERR;
642
exitstatus = EXIT_FAILURE;
677
643
goto fallback;
678
644
}
679
645
free(org_line);
682
648
not affect opening plugins */
683
649
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
684
650
perror("fopen");
685
exitstatus = EX_OSERR;
651
exitstatus = EXIT_FAILURE;
686
652
goto fallback;
687
653
}
688
654
}
689
/* If there were any arguments from the configuration file, pass
690
them to parser as command line arguments */
655
/* If there was any arguments from configuration file,
656
pass them to parser as command arguments */
691
657
if(custom_argv != NULL){
692
ret = argp_parse(&argp, custom_argc, custom_argv,
693
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
694
NULL, NULL);
695
switch(ret){
696
case 0:
697
break;
698
case ENOMEM:
699
default:
700
errno = ret;
701
perror("argp_parse");
702
exitstatus = EX_OSERR;
703
goto fallback;
704
case EINVAL:
705
exitstatus = EX_CONFIG;
658
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
659
0, NULL);
660
if(ret == ARGP_ERR_UNKNOWN){
661
fprintf(stderr, "Unknown error while parsing arguments\n");
662
exitstatus = EXIT_FAILURE;
706
663
goto fallback;
707
664
}
708
665
}
709
666
710
667
/* Parse actual command line arguments, to let them override the
711
668
config file */
712
ret = argp_parse(&argp, argc, argv,
713
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
714
NULL, NULL);
715
switch(ret){
716
case 0:
717
break;
718
case ENOMEM:
719
default:
720
errno = ret;
721
perror("argp_parse");
722
exitstatus = EX_OSERR;
723
goto fallback;
724
case EINVAL:
725
exitstatus = EX_USAGE;
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;
726
673
goto fallback;
727
674
}
728
675
750
697
perror("setuid");
751
698
}
752
699
753
/* Open plugin directory with close_on_exec flag */
700
if(plugindir == NULL){
701
dir = opendir(PDIR);
702
} else {
703
dir = opendir(plugindir);
704
}
705
706
if(dir == NULL){
707
perror("Could not open plugin dir");
708
exitstatus = EXIT_FAILURE;
709
goto fallback;
710
}
711
712
/* Set the FD_CLOEXEC flag on the directory, if possible */
754
713
{
755
int dir_fd = -1;
756
if(plugindir == NULL){
757
dir_fd = open(PDIR, O_RDONLY |
758
#ifdef O_CLOEXEC
759
O_CLOEXEC
760
#else /* not O_CLOEXEC */
761
0
762
#endif /* not O_CLOEXEC */
763
);
764
} else {
765
dir_fd = open(plugindir, O_RDONLY |
766
#ifdef O_CLOEXEC
767
O_CLOEXEC
768
#else /* not O_CLOEXEC */
769
0
770
#endif /* not O_CLOEXEC */
771
);
772
}
773
if(dir_fd == -1){
774
perror("Could not open plugin dir");
775
exitstatus = EX_UNAVAILABLE;
776
goto fallback;
777
}
778
779
#ifndef O_CLOEXEC
780
/* Set the FD_CLOEXEC flag on the directory */
781
ret = set_cloexec_flag(dir_fd);
782
if(ret < 0){
783
perror("set_cloexec_flag");
784
TEMP_FAILURE_RETRY(close(dir_fd));
785
exitstatus = EX_OSERR;
786
goto fallback;
787
}
788
#endif /* O_CLOEXEC */
789
790
dir = fdopendir(dir_fd);
791
if(dir == NULL){
792
perror("Could not open plugin dir");
793
TEMP_FAILURE_RETRY(close(dir_fd));
794
exitstatus = EX_OSERR;
795
goto fallback;
714
int dir_fd = dirfd(dir);
715
if(dir_fd >= 0){
716
ret = set_cloexec_flag(dir_fd);
717
if(ret < 0){
718
perror("set_cloexec_flag");
719
exitstatus = EXIT_FAILURE;
720
goto fallback;
721
}
796
722
}
797
723
}
798
724
808
734
if(dirst == NULL){
809
735
if(errno == EBADF){
810
736
perror("readdir");
811
exitstatus = EX_IOERR;
737
exitstatus = EXIT_FAILURE;
812
738
goto fallback;
813
739
}
814
740
break;
844
770
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
845
771
size_t suf_len = strlen(*suf);
846
772
if((d_name_len >= suf_len)
847
and (strcmp((dirst->d_name) + d_name_len-suf_len, *suf)
773
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
848
774
== 0)){
849
775
if(debug){
850
776
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
862
788
863
789
char *filename;
864
790
if(plugindir == NULL){
865
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
866
dirst->d_name));
791
ret = TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
792
dirst->d_name));
867
793
} else {
868
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s",
869
plugindir,
870
dirst->d_name));
794
ret = TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s", plugindir,
795
dirst->d_name));
871
796
}
872
797
if(ret < 0){
873
798
perror("asprintf");
874
799
continue;
875
800
}
876
801
877
ret = (int)TEMP_FAILURE_RETRY(stat(filename, &st));
802
ret = TEMP_FAILURE_RETRY(stat(filename, &st));
878
803
if(ret == -1){
879
804
perror("stat");
880
805
free(filename);
935
860
}
936
861
937
862
int pipefd[2];
938
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
863
ret = TEMP_FAILURE_RETRY(pipe(pipefd));
939
864
if(ret == -1){
940
865
perror("pipe");
941
exitstatus = EX_OSERR;
866
exitstatus = EXIT_FAILURE;
942
867
goto fallback;
943
868
}
944
869
/* Ask OS to automatic close the pipe on exec */
945
870
ret = set_cloexec_flag(pipefd[0]);
946
871
if(ret < 0){
947
872
perror("set_cloexec_flag");
948
exitstatus = EX_OSERR;
873
exitstatus = EXIT_FAILURE;
949
874
goto fallback;
950
875
}
951
876
ret = set_cloexec_flag(pipefd[1]);
952
877
if(ret < 0){
953
878
perror("set_cloexec_flag");
954
exitstatus = EX_OSERR;
879
exitstatus = EXIT_FAILURE;
955
880
goto fallback;
956
881
}
957
882
/* Block SIGCHLD until process is safely in process list */
958
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
959
&sigchld_action.sa_mask,
960
NULL));
883
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
884
&sigchld_action.sa_mask,
885
NULL));
961
886
if(ret < 0){
962
887
perror("sigprocmask");
963
exitstatus = EX_OSERR;
888
exitstatus = EXIT_FAILURE;
964
889
goto fallback;
965
890
}
966
891
/* Starting a new process to be watched */
970
895
} while(pid == -1 and errno == EINTR);
971
896
if(pid == -1){
972
897
perror("fork");
973
exitstatus = EX_OSERR;
898
exitstatus = EXIT_FAILURE;
974
899
goto fallback;
975
900
}
976
901
if(pid == 0){
978
903
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
979
904
if(ret < 0){
980
905
perror("sigaction");
981
_exit(EX_OSERR);
906
_exit(EXIT_FAILURE);
982
907
}
983
908
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
984
909
if(ret < 0){
985
910
perror("sigprocmask");
986
_exit(EX_OSERR);
911
_exit(EXIT_FAILURE);
987
912
}
988
913
989
914
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
990
915
if(ret == -1){
991
916
perror("dup2");
992
_exit(EX_OSERR);
917
_exit(EXIT_FAILURE);
993
918
}
994
919
995
920
if(dirfd(dir) < 0){
1000
925
if(p->environ[0] == NULL){
1001
926
if(execv(filename, p->argv) < 0){
1002
927
perror("execv");
1003
_exit(EX_OSERR);
928
_exit(EXIT_FAILURE);
1004
929
}
1005
930
} else {
1006
931
if(execve(filename, p->argv, p->environ) < 0){
1007
932
perror("execve");
1008
_exit(EX_OSERR);
933
_exit(EXIT_FAILURE);
1009
934
}
1010
935
}
1011
936
/* no return */
1017
942
plugin *new_plugin = getplugin(dirst->d_name);
1018
943
if(new_plugin == NULL){
1019
944
perror("getplugin");
1020
ret = (int)(TEMP_FAILURE_RETRY
1021
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1022
NULL)));
945
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
946
&sigchld_action.sa_mask,
947
NULL));
1023
948
if(ret < 0){
1024
949
perror("sigprocmask");
1025
950
}
1026
exitstatus = EX_OSERR;
951
exitstatus = EXIT_FAILURE;
1027
952
goto fallback;
1028
953
}
1029
954
1032
957
1033
958
/* Unblock SIGCHLD so signal handler can be run if this process
1034
959
has already completed */
1035
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1036
&sigchld_action.sa_mask,
1037
NULL));
960
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
961
&sigchld_action.sa_mask,
962
NULL));
1038
963
if(ret < 0){
1039
964
perror("sigprocmask");
1040
exitstatus = EX_OSERR;
965
exitstatus = EXIT_FAILURE;
1041
966
goto fallback;
1042
967
}
1043
968
1044
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1045
-Wconversion */
969
FD_SET(new_plugin->fd, &rfds_all);
1046
970
1047
971
if(maxfd < new_plugin->fd){
1048
972
maxfd = new_plugin->fd;
1070
994
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1071
995
if(select_ret == -1 and errno != EINTR){
1072
996
perror("select");
1073
exitstatus = EX_OSERR;
997
exitstatus = EXIT_FAILURE;
1074
998
goto fallback;
1075
999
}
1076
1000
/* OK, now either a process completed, or something can be read
1102
1026
}
1103
1027
1104
1028
/* Remove the plugin */
1105
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1106
-Wconversion */
1029
FD_CLR(proc->fd, &rfds_all);
1107
1030
1108
1031
/* Block signal while modifying process_list */
1109
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1110
(SIG_BLOCK,
1111
&sigchld_action.sa_mask,
1112
NULL));
1032
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1033
&sigchld_action.sa_mask,
1034
NULL));
1113
1035
if(ret < 0){
1114
1036
perror("sigprocmask");
1115
exitstatus = EX_OSERR;
1037
exitstatus = EXIT_FAILURE;
1116
1038
goto fallback;
1117
1039
}
1118
1040
1121
1043
proc = next_plugin;
1122
1044
1123
1045
/* We are done modifying process list, so unblock signal */
1124
ret = (int)(TEMP_FAILURE_RETRY
1125
(sigprocmask(SIG_UNBLOCK,
1126
&sigchld_action.sa_mask, NULL)));
1046
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1047
&sigchld_action.sa_mask,
1048
NULL));
1127
1049
if(ret < 0){
1128
1050
perror("sigprocmask");
1129
exitstatus = EX_OSERR;
1051
exitstatus = EXIT_FAILURE;
1130
1052
goto fallback;
1131
1053
}
1132
1054
1143
1065
proc->buffer_length);
1144
1066
if(not bret){
1145
1067
perror("print_out_password");
1146
exitstatus = EX_IOERR;
1068
exitstatus = EXIT_FAILURE;
1147
1069
}
1148
1070
goto fallback;
1149
1071
}
1150
1072
1151
1073
/* This process has not completed. Does it have any output? */
1152
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1153
warning from
1154
-Wconversion */
1074
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1155
1075
/* This process had nothing to say at this time */
1156
1076
proc = proc->next;
1157
1077
continue;
1162
1082
+ (size_t) BUFFER_SIZE);
1163
1083
if(proc->buffer == NULL){
1164
1084
perror("malloc");
1165
exitstatus = EX_OSERR;
1085
exitstatus = EXIT_FAILURE;
1166
1086
goto fallback;
1167
1087
}
1168
1088
proc->buffer_size += BUFFER_SIZE;
1189
1109
1190
1110
fallback:
1191
1111
1192
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1193
and exitstatus != EX_OK)){
1112
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1194
1113
/* Fallback if all plugins failed, none are found or an error
1195
1114
occured */
1196
1115
bool bret;
1205
1124
bret = print_out_password(passwordbuffer, len);
1206
1125
if(not bret){
1207
1126
perror("print_out_password");
1208
exitstatus = EX_IOERR;
1127
exitstatus = EXIT_FAILURE;
1209
1128
}
1210
1129
}
1211
1130
1213
1132
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1214
1133
if(ret == -1){
1215
1134
perror("sigaction");
1216
exitstatus = EX_OSERR;
1135
exitstatus = EXIT_FAILURE;
1217
1136
}
1218
1137
1219
1138
if(custom_argv != NULL){
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0