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- Committer: teddy at bsnet
- Date: 2010-09-09 18:16:14 UTC
- mfrom: (269.1.3 mandos-empty-device)
- mto: (24.1.162 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20100909181614-oanlmvkzsiodbo3c
Merge in branch to interpret an empty device name to mean
"autodetect".
"autodetect".
- files added:
- 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() */
26
asprintf(), O_CLOEXEC */
27
27
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
EXIT_SUCCESS, realloc() */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
29
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, opendir(), stat(), struct
33
#include <sys/types.h> /* DIR, fdopendir(), 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, opendir(),
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
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() */
57
strsignal(), strcmp(), strncmp() */
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 */
71
73
72
74
#define BUFFER_SIZE 256
73
75
102
104
/* Gets an existing plugin based on name,
103
105
or if none is found, creates a new one */
104
106
static plugin *getplugin(char *name){
105
/* Check for exiting plugin with that name */
107
/* Check for existing plugin with that name */
106
108
for(plugin *p = plugin_list; p != NULL; p = p->next){
107
109
if((p->name == name)
108
110
or (p->name and name and (strcmp(p->name, name) == 0))){
123
125
copy_name = strdup(name);
124
126
} while(copy_name == NULL and errno == EINTR);
125
127
if(copy_name == NULL){
128
int e = errno;
126
129
free(new_plugin);
130
errno = e;
127
131
return NULL;
128
132
}
129
133
}
137
141
new_plugin->argv = malloc(sizeof(char *) * 2);
138
142
} while(new_plugin->argv == NULL and errno == EINTR);
139
143
if(new_plugin->argv == NULL){
144
int e = errno;
140
145
free(copy_name);
141
146
free(new_plugin);
147
errno = e;
142
148
return NULL;
143
149
}
144
150
new_plugin->argv[0] = copy_name;
148
154
new_plugin->environ = malloc(sizeof(char *));
149
155
} while(new_plugin->environ == NULL and errno == EINTR);
150
156
if(new_plugin->environ == NULL){
157
int e = errno;
151
158
free(copy_name);
152
159
free(new_plugin->argv);
153
160
free(new_plugin);
161
errno = e;
154
162
return NULL;
155
163
}
156
164
new_plugin->environ[0] = NULL;
230
238
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
231
239
*/
232
240
static int set_cloexec_flag(int fd){
233
int ret = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
241
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
234
242
/* If reading the flags failed, return error indication now. */
235
243
if(ret < 0){
236
244
return ret;
237
245
}
238
246
/* Store modified flag word in the descriptor. */
239
return TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD, ret | FD_CLOEXEC));
247
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
248
ret | FD_CLOEXEC));
240
249
}
241
250
242
251
349
358
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
350
359
if(ret == -1){
351
360
perror("sigaddset");
352
exitstatus = EXIT_FAILURE;
361
exitstatus = EX_OSERR;
353
362
goto fallback;
354
363
}
355
364
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
356
365
if(ret == -1){
357
366
perror("sigaction");
358
exitstatus = EXIT_FAILURE;
367
exitstatus = EX_OSERR;
359
368
goto fallback;
360
369
}
361
370
393
402
.doc = "Group ID the plugins will run as", .group = 3 },
394
403
{ .name = "debug", .key = 132,
395
404
.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 },
396
414
{ .name = NULL }
397
415
};
398
416
399
error_t parse_opt(int key, char *arg, __attribute__((unused))
400
struct argp_state *state){
417
error_t parse_opt(int key, char *arg, struct argp_state *state){
418
errno = 0;
401
419
switch(key){
402
420
char *tmp;
403
421
intmax_t tmpmax;
404
422
case 'g': /* --global-options */
405
if(arg != NULL){
423
{
406
424
char *plugin_option;
407
425
while((plugin_option = strsep(&arg, ",")) != NULL){
408
if(plugin_option[0] == '\0'){
409
continue;
410
}
411
426
if(not add_argument(getplugin(NULL), plugin_option)){
412
perror("add_argument");
413
return ARGP_ERR_UNKNOWN;
427
break;
414
428
}
415
429
}
416
430
}
417
431
break;
418
432
case 'G': /* --global-env */
419
if(arg == NULL){
420
break;
421
}
422
if(not add_environment(getplugin(NULL), arg, true)){
423
perror("add_environment");
424
}
433
add_environment(getplugin(NULL), arg, true);
425
434
break;
426
435
case 'o': /* --options-for */
427
if(arg != NULL){
428
char *plugin_name = strsep(&arg, ":");
429
if(plugin_name[0] == '\0'){
430
break;
431
}
432
char *plugin_option;
433
while((plugin_option = strsep(&arg, ",")) != NULL){
434
if(not add_argument(getplugin(plugin_name), plugin_option)){
435
perror("add_argument");
436
return ARGP_ERR_UNKNOWN;
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;
437
454
}
438
455
}
439
456
}
440
457
break;
441
458
case 'E': /* --env-for */
442
if(arg == NULL){
443
break;
444
}
445
459
{
446
460
char *envdef = strchr(arg, ':');
447
461
if(envdef == NULL){
462
argp_error(state, "No colon in \"%s\"", arg);
463
errno = EINVAL;
448
464
break;
449
465
}
450
466
*envdef = '\0';
451
if(not add_environment(getplugin(arg), envdef+1, true)){
452
perror("add_environment");
467
envdef++;
468
if(arg[0] == '\0'){
469
argp_error(state, "Empty plugin name");
470
errno = EINVAL;
471
break;
453
472
}
473
add_environment(getplugin(arg), envdef, true);
454
474
}
455
475
break;
456
476
case 'd': /* --disable */
457
if(arg != NULL){
477
{
458
478
plugin *p = getplugin(arg);
459
if(p == NULL){
460
return ARGP_ERR_UNKNOWN;
479
if(p != NULL){
480
p->disabled = true;
461
481
}
462
p->disabled = true;
463
482
}
464
483
break;
465
484
case 'e': /* --enable */
466
if(arg != NULL){
485
{
467
486
plugin *p = getplugin(arg);
468
if(p == NULL){
469
return ARGP_ERR_UNKNOWN;
487
if(p != NULL){
488
p->disabled = false;
470
489
}
471
p->disabled = false;
472
490
}
473
491
break;
474
492
case 128: /* --plugin-dir */
475
493
free(plugindir);
476
494
plugindir = strdup(arg);
477
if(plugindir == NULL){
478
perror("strdup");
479
}
480
495
break;
481
496
case 129: /* --config-file */
482
497
/* This is already done by parse_opt_config_file() */
483
498
break;
484
499
case 130: /* --userid */
485
errno = 0;
486
500
tmpmax = strtoimax(arg, &tmp, 10);
487
501
if(errno != 0 or tmp == arg or *tmp != '\0'
488
502
or tmpmax != (uid_t)tmpmax){
489
fprintf(stderr, "Bad user ID number: \"%s\", using %"
490
PRIdMAX "\n", arg, (intmax_t)uid);
491
} else {
492
uid = (uid_t)tmpmax;
503
argp_error(state, "Bad user ID number: \"%s\", using %"
504
PRIdMAX, arg, (intmax_t)uid);
505
break;
493
506
}
507
uid = (uid_t)tmpmax;
494
508
break;
495
509
case 131: /* --groupid */
496
errno = 0;
497
510
tmpmax = strtoimax(arg, &tmp, 10);
498
511
if(errno != 0 or tmp == arg or *tmp != '\0'
499
512
or tmpmax != (gid_t)tmpmax){
500
fprintf(stderr, "Bad group ID number: \"%s\", using %"
501
PRIdMAX "\n", arg, (intmax_t)gid);
502
} else {
503
gid = (gid_t)tmpmax;
513
argp_error(state, "Bad group ID number: \"%s\", using %"
514
PRIdMAX, arg, (intmax_t)gid);
515
break;
504
516
}
517
gid = (gid_t)tmpmax;
505
518
break;
506
519
case 132: /* --debug */
507
520
debug = true;
508
521
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;
509
536
/*
510
537
* When adding more options before this line, remember to also add a
511
538
* "case" to the "parse_opt_config_file" function below.
514
541
/* Cryptsetup always passes an argument, which is an empty
515
542
string if "none" was specified in /etc/crypttab. So if
516
543
argument was empty, we ignore it silently. */
517
if(arg[0] != '\0'){
518
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
544
if(arg[0] == '\0'){
545
break;
519
546
}
520
break;
521
case ARGP_KEY_END:
522
break;
523
547
default:
524
548
return ARGP_ERR_UNKNOWN;
525
549
}
526
return 0;
550
return errno; /* Set to 0 at start */
527
551
}
528
552
529
553
/* This option parser is the same as parse_opt() above, except it
531
555
error_t parse_opt_config_file(int key, char *arg,
532
556
__attribute__((unused))
533
557
struct argp_state *state){
558
errno = 0;
534
559
switch(key){
535
560
case 'g': /* --global-options */
536
561
case 'G': /* --global-env */
543
568
case 129: /* --config-file */
544
569
free(argfile);
545
570
argfile = strdup(arg);
546
if(argfile == NULL){
547
perror("strdup");
548
}
549
571
break;
550
572
case 130: /* --userid */
551
573
case 131: /* --groupid */
552
574
case 132: /* --debug */
575
case '?': /* --help */
576
case -3: /* --usage */
577
case 'V': /* --version */
553
578
case ARGP_KEY_ARG:
554
case ARGP_KEY_END:
555
579
break;
556
580
default:
557
581
return ARGP_ERR_UNKNOWN;
558
582
}
559
return 0;
583
return errno;
560
584
}
561
585
562
586
struct argp argp = { .options = options,
566
590
567
591
/* Parse using parse_opt_config_file() in order to get the custom
568
592
config file location, if any. */
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;
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;
573
607
goto fallback;
574
608
}
575
609
593
627
custom_argv = malloc(sizeof(char*) * 2);
594
628
if(custom_argv == NULL){
595
629
perror("malloc");
596
exitstatus = EXIT_FAILURE;
630
exitstatus = EX_OSERR;
597
631
goto fallback;
598
632
}
599
633
custom_argv[0] = argv[0];
616
650
new_arg = strdup(p);
617
651
if(new_arg == NULL){
618
652
perror("strdup");
619
exitstatus = EXIT_FAILURE;
653
exitstatus = EX_OSERR;
620
654
free(org_line);
621
655
goto fallback;
622
656
}
626
660
* ((unsigned int) custom_argc + 1));
627
661
if(custom_argv == NULL){
628
662
perror("realloc");
629
exitstatus = EXIT_FAILURE;
663
exitstatus = EX_OSERR;
630
664
free(org_line);
631
665
goto fallback;
632
666
}
639
673
} while(ret == EOF and errno == EINTR);
640
674
if(ret == EOF){
641
675
perror("fclose");
642
exitstatus = EXIT_FAILURE;
676
exitstatus = EX_IOERR;
643
677
goto fallback;
644
678
}
645
679
free(org_line);
648
682
not affect opening plugins */
649
683
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
650
684
perror("fopen");
651
exitstatus = EXIT_FAILURE;
685
exitstatus = EX_OSERR;
652
686
goto fallback;
653
687
}
654
688
}
655
/* If there was any arguments from configuration file,
656
pass them to parser as command arguments */
689
/* If there were any arguments from the configuration file, pass
690
them to parser as command line arguments */
657
691
if(custom_argv != NULL){
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;
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;
663
706
goto fallback;
664
707
}
665
708
}
666
709
667
710
/* Parse actual command line arguments, to let them override the
668
711
config file */
669
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
670
if(ret == ARGP_ERR_UNKNOWN){
671
fprintf(stderr, "Unknown error while parsing arguments\n");
672
exitstatus = EXIT_FAILURE;
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;
673
726
goto fallback;
674
727
}
675
728
697
750
perror("setuid");
698
751
}
699
752
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 */
753
/* Open plugin directory with close_on_exec flag */
713
754
{
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
}
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;
722
796
}
723
797
}
724
798
734
808
if(dirst == NULL){
735
809
if(errno == EBADF){
736
810
perror("readdir");
737
exitstatus = EXIT_FAILURE;
811
exitstatus = EX_IOERR;
738
812
goto fallback;
739
813
}
740
814
break;
770
844
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
771
845
size_t suf_len = strlen(*suf);
772
846
if((d_name_len >= suf_len)
773
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
847
and (strcmp((dirst->d_name) + d_name_len-suf_len, *suf)
774
848
== 0)){
775
849
if(debug){
776
850
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
788
862
789
863
char *filename;
790
864
if(plugindir == NULL){
791
ret = TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
792
dirst->d_name));
865
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
866
dirst->d_name));
793
867
} else {
794
ret = TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s", plugindir,
795
dirst->d_name));
868
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s",
869
plugindir,
870
dirst->d_name));
796
871
}
797
872
if(ret < 0){
798
873
perror("asprintf");
799
874
continue;
800
875
}
801
876
802
ret = TEMP_FAILURE_RETRY(stat(filename, &st));
877
ret = (int)TEMP_FAILURE_RETRY(stat(filename, &st));
803
878
if(ret == -1){
804
879
perror("stat");
805
880
free(filename);
860
935
}
861
936
862
937
int pipefd[2];
863
ret = TEMP_FAILURE_RETRY(pipe(pipefd));
938
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
864
939
if(ret == -1){
865
940
perror("pipe");
866
exitstatus = EXIT_FAILURE;
941
exitstatus = EX_OSERR;
867
942
goto fallback;
868
943
}
869
944
/* Ask OS to automatic close the pipe on exec */
870
945
ret = set_cloexec_flag(pipefd[0]);
871
946
if(ret < 0){
872
947
perror("set_cloexec_flag");
873
exitstatus = EXIT_FAILURE;
948
exitstatus = EX_OSERR;
874
949
goto fallback;
875
950
}
876
951
ret = set_cloexec_flag(pipefd[1]);
877
952
if(ret < 0){
878
953
perror("set_cloexec_flag");
879
exitstatus = EXIT_FAILURE;
954
exitstatus = EX_OSERR;
880
955
goto fallback;
881
956
}
882
957
/* Block SIGCHLD until process is safely in process list */
883
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
884
&sigchld_action.sa_mask,
885
NULL));
958
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
959
&sigchld_action.sa_mask,
960
NULL));
886
961
if(ret < 0){
887
962
perror("sigprocmask");
888
exitstatus = EXIT_FAILURE;
963
exitstatus = EX_OSERR;
889
964
goto fallback;
890
965
}
891
966
/* Starting a new process to be watched */
895
970
} while(pid == -1 and errno == EINTR);
896
971
if(pid == -1){
897
972
perror("fork");
898
exitstatus = EXIT_FAILURE;
973
exitstatus = EX_OSERR;
899
974
goto fallback;
900
975
}
901
976
if(pid == 0){
903
978
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
904
979
if(ret < 0){
905
980
perror("sigaction");
906
_exit(EXIT_FAILURE);
981
_exit(EX_OSERR);
907
982
}
908
983
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
909
984
if(ret < 0){
910
985
perror("sigprocmask");
911
_exit(EXIT_FAILURE);
986
_exit(EX_OSERR);
912
987
}
913
988
914
989
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
915
990
if(ret == -1){
916
991
perror("dup2");
917
_exit(EXIT_FAILURE);
992
_exit(EX_OSERR);
918
993
}
919
994
920
995
if(dirfd(dir) < 0){
925
1000
if(p->environ[0] == NULL){
926
1001
if(execv(filename, p->argv) < 0){
927
1002
perror("execv");
928
_exit(EXIT_FAILURE);
1003
_exit(EX_OSERR);
929
1004
}
930
1005
} else {
931
1006
if(execve(filename, p->argv, p->environ) < 0){
932
1007
perror("execve");
933
_exit(EXIT_FAILURE);
1008
_exit(EX_OSERR);
934
1009
}
935
1010
}
936
1011
/* no return */
942
1017
plugin *new_plugin = getplugin(dirst->d_name);
943
1018
if(new_plugin == NULL){
944
1019
perror("getplugin");
945
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
946
&sigchld_action.sa_mask,
947
NULL));
1020
ret = (int)(TEMP_FAILURE_RETRY
1021
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1022
NULL)));
948
1023
if(ret < 0){
949
1024
perror("sigprocmask");
950
1025
}
951
exitstatus = EXIT_FAILURE;
1026
exitstatus = EX_OSERR;
952
1027
goto fallback;
953
1028
}
954
1029
957
1032
958
1033
/* Unblock SIGCHLD so signal handler can be run if this process
959
1034
has already completed */
960
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
961
&sigchld_action.sa_mask,
962
NULL));
1035
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1036
&sigchld_action.sa_mask,
1037
NULL));
963
1038
if(ret < 0){
964
1039
perror("sigprocmask");
965
exitstatus = EXIT_FAILURE;
1040
exitstatus = EX_OSERR;
966
1041
goto fallback;
967
1042
}
968
1043
969
FD_SET(new_plugin->fd, &rfds_all);
1044
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1045
-Wconversion */
970
1046
971
1047
if(maxfd < new_plugin->fd){
972
1048
maxfd = new_plugin->fd;
994
1070
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
995
1071
if(select_ret == -1 and errno != EINTR){
996
1072
perror("select");
997
exitstatus = EXIT_FAILURE;
1073
exitstatus = EX_OSERR;
998
1074
goto fallback;
999
1075
}
1000
1076
/* OK, now either a process completed, or something can be read
1026
1102
}
1027
1103
1028
1104
/* Remove the plugin */
1029
FD_CLR(proc->fd, &rfds_all);
1105
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1106
-Wconversion */
1030
1107
1031
1108
/* Block signal while modifying process_list */
1032
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1033
&sigchld_action.sa_mask,
1034
NULL));
1109
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1110
(SIG_BLOCK,
1111
&sigchld_action.sa_mask,
1112
NULL));
1035
1113
if(ret < 0){
1036
1114
perror("sigprocmask");
1037
exitstatus = EXIT_FAILURE;
1115
exitstatus = EX_OSERR;
1038
1116
goto fallback;
1039
1117
}
1040
1118
1043
1121
proc = next_plugin;
1044
1122
1045
1123
/* We are done modifying process list, so unblock signal */
1046
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1047
&sigchld_action.sa_mask,
1048
NULL));
1124
ret = (int)(TEMP_FAILURE_RETRY
1125
(sigprocmask(SIG_UNBLOCK,
1126
&sigchld_action.sa_mask, NULL)));
1049
1127
if(ret < 0){
1050
1128
perror("sigprocmask");
1051
exitstatus = EXIT_FAILURE;
1129
exitstatus = EX_OSERR;
1052
1130
goto fallback;
1053
1131
}
1054
1132
1065
1143
proc->buffer_length);
1066
1144
if(not bret){
1067
1145
perror("print_out_password");
1068
exitstatus = EXIT_FAILURE;
1146
exitstatus = EX_IOERR;
1069
1147
}
1070
1148
goto fallback;
1071
1149
}
1072
1150
1073
1151
/* This process has not completed. Does it have any output? */
1074
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1152
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1153
warning from
1154
-Wconversion */
1075
1155
/* This process had nothing to say at this time */
1076
1156
proc = proc->next;
1077
1157
continue;
1082
1162
+ (size_t) BUFFER_SIZE);
1083
1163
if(proc->buffer == NULL){
1084
1164
perror("malloc");
1085
exitstatus = EXIT_FAILURE;
1165
exitstatus = EX_OSERR;
1086
1166
goto fallback;
1087
1167
}
1088
1168
proc->buffer_size += BUFFER_SIZE;
1109
1189
1110
1190
fallback:
1111
1191
1112
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1192
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1193
and exitstatus != EX_OK)){
1113
1194
/* Fallback if all plugins failed, none are found or an error
1114
1195
occured */
1115
1196
bool bret;
1124
1205
bret = print_out_password(passwordbuffer, len);
1125
1206
if(not bret){
1126
1207
perror("print_out_password");
1127
exitstatus = EXIT_FAILURE;
1208
exitstatus = EX_IOERR;
1128
1209
}
1129
1210
}
1130
1211
1132
1213
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1133
1214
if(ret == -1){
1134
1215
perror("sigaction");
1135
exitstatus = EXIT_FAILURE;
1216
exitstatus = EX_OSERR;
1136
1217
}
1137
1218
1138
1219
if(custom_argv != NULL){
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0