37
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
38
39
FD_SET(), FD_ISSET(), FD_CLR */
39
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
WEXITSTATUS(), WTERMSIG(),
41
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
42
44
#include <iso646.h> /* and, or, not */
43
#include <dirent.h> /* DIR, struct dirent, opendir(),
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
44
46
readdir(), closedir(), dirfd() */
45
47
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
46
48
fcntl(), setuid(), setgid(),
47
49
F_GETFD, F_SETFD, FD_CLOEXEC,
48
50
access(), pipe(), fork(), close()
49
dup2, STDOUT_FILENO, _exit(),
51
dup2(), STDOUT_FILENO, _exit(),
50
52
execv(), write(), read(),
52
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
54
#include <string.h> /* strsep, strlen(), asprintf() */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal(), strcmp(), strncmp() */
55
58
#include <errno.h> /* errno */
56
59
#include <argp.h> /* struct argp_option, struct
57
60
argp_state, struct argp,
323
375
{ .name = "global-options", .key = 'g',
324
376
.arg = "OPTION[,OPTION[,...]]",
325
377
.doc = "Options passed to all plugins" },
326
{ .name = "global-envs", .key = 'e',
378
{ .name = "global-env", .key = 'G',
327
379
.arg = "VAR=value",
328
380
.doc = "Environment variable passed to all plugins" },
329
381
{ .name = "options-for", .key = 'o',
330
382
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
331
383
.doc = "Options passed only to specified plugin" },
332
{ .name = "envs-for", .key = 'f',
384
{ .name = "env-for", .key = 'E',
333
385
.arg = "PLUGIN:ENV=value",
334
386
.doc = "Environment variable passed to specified plugin" },
335
387
{ .name = "disable", .key = 'd',
337
389
.doc = "Disable a specific plugin", .group = 1 },
390
{ .name = "enable", .key = 'e',
392
.doc = "Enable a specific plugin", .group = 1 },
338
393
{ .name = "plugin-dir", .key = 128,
339
394
.arg = "DIRECTORY",
340
395
.doc = "Specify a different plugin directory", .group = 2 },
341
{ .name = "userid", .key = 129,
342
.arg = "ID", .flags = 0,
343
.doc = "User ID the plugins will run as", .group = 2 },
344
{ .name = "groupid", .key = 130,
345
.arg = "ID", .flags = 0,
346
.doc = "Group ID the plugins will run as", .group = 2 },
347
{ .name = "debug", .key = 131,
348
.doc = "Debug mode", .group = 3 },
396
{ .name = "config-file", .key = 129,
398
.doc = "Specify a different configuration file", .group = 2 },
399
{ .name = "userid", .key = 130,
400
.arg = "ID", .flags = 0,
401
.doc = "User ID the plugins will run as", .group = 3 },
402
{ .name = "groupid", .key = 131,
403
.arg = "ID", .flags = 0,
404
.doc = "Group ID the plugins will run as", .group = 3 },
405
{ .name = "debug", .key = 132,
406
.doc = "Debug mode", .group = 4 },
408
* These reproduce what we would get without ARGP_NO_HELP
410
{ .name = "help", .key = '?',
411
.doc = "Give this help list", .group = -1 },
412
{ .name = "usage", .key = -3,
413
.doc = "Give a short usage message", .group = -1 },
414
{ .name = "version", .key = 'V',
415
.doc = "Print program version", .group = -1 },
352
error_t parse_opt (int key, char *arg, struct argp_state *state) {
353
/* Get the INPUT argument from `argp_parse', which we know is a
354
pointer to our plugin list pointer. */
355
plugin **plugins = state->input;
360
while((p = strsep(&arg, ",")) != NULL){
364
if(not add_argument(getplugin(NULL, plugins), p)){
365
perror("add_argument");
366
return ARGP_ERR_UNKNOWN;
376
char *envdef = strdup(arg);
380
if(not add_environment(getplugin(NULL, plugins), envdef)){
381
perror("add_environment");
387
char *p_name = strsep(&arg, ":");
388
if(p_name[0] == '\0'){
391
char *opt = strsep(&arg, ":");
397
while((p = strsep(&opt, ",")) != NULL){
401
if(not add_argument(getplugin(p_name, plugins), p)){
402
perror("add_argument");
403
return ARGP_ERR_UNKNOWN;
419
error_t parse_opt(int key, char *arg, struct argp_state *state){
424
case 'g': /* --global-options */
427
while((plugin_option = strsep(&arg, ",")) != NULL){
428
if(not add_argument(getplugin(NULL), plugin_option)){
434
case 'G': /* --global-env */
435
add_environment(getplugin(NULL), arg, true);
437
case 'o': /* --options-for */
439
char *option_list = strchr(arg, ':');
440
if(option_list == NULL){
441
argp_error(state, "No colon in \"%s\"", arg);
448
argp_error(state, "Empty plugin name");
453
while((option = strsep(&option_list, ",")) != NULL){
454
if(not add_argument(getplugin(arg), option)){
460
case 'E': /* --env-for */
414
462
char *envdef = strchr(arg, ':');
415
463
if(envdef == NULL){
418
char *p_name = strndup(arg, (size_t) (envdef-arg));
464
argp_error(state, "No colon in \"%s\"", arg);
423
if(not add_environment(getplugin(p_name, plugins), envdef)){
424
perror("add_environment");
430
plugin *p = getplugin(arg, plugins);
432
return ARGP_ERR_UNKNOWN;
441
uid = (uid_t)strtol(arg, NULL, 10);
444
gid = (gid_t)strtol(arg, NULL, 10);
471
argp_error(state, "Empty plugin name");
475
add_environment(getplugin(arg), envdef, true);
478
case 'd': /* --disable */
480
plugin *p = getplugin(arg);
486
case 'e': /* --enable */
488
plugin *p = getplugin(arg);
494
case 128: /* --plugin-dir */
496
plugindir = strdup(arg);
498
case 129: /* --config-file */
499
/* This is already done by parse_opt_config_file() */
501
case 130: /* --userid */
502
tmpmax = strtoimax(arg, &tmp, 10);
503
if(errno != 0 or tmp == arg or *tmp != '\0'
504
or tmpmax != (uid_t)tmpmax){
505
argp_error(state, "Bad user ID number: \"%s\", using %"
506
PRIdMAX, arg, (intmax_t)uid);
511
case 131: /* --groupid */
512
tmpmax = strtoimax(arg, &tmp, 10);
513
if(errno != 0 or tmp == arg or *tmp != '\0'
514
or tmpmax != (gid_t)tmpmax){
515
argp_error(state, "Bad group ID number: \"%s\", using %"
516
PRIdMAX, arg, (intmax_t)gid);
521
case 132: /* --debug */
450
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
455
return ARGP_ERR_UNKNOWN;
460
plugin *plugin_list = NULL;
462
struct argp argp = { .options = options, .parser = parse_opt,
463
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
525
* These reproduce what we would get without ARGP_NO_HELP
527
case '?': /* --help */
528
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
529
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
530
case -3: /* --usage */
531
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
532
argp_state_help(state, state->out_stream,
533
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
534
case 'V': /* --version */
535
fprintf(state->out_stream, "%s\n", argp_program_version);
539
* When adding more options before this line, remember to also add a
540
* "case" to the "parse_opt_config_file" function below.
543
/* Cryptsetup always passes an argument, which is an empty
544
string if "none" was specified in /etc/crypttab. So if
545
argument was empty, we ignore it silently. */
550
return ARGP_ERR_UNKNOWN;
552
return errno; /* Set to 0 at start */
555
/* This option parser is the same as parse_opt() above, except it
556
ignores everything but the --config-file option. */
557
error_t parse_opt_config_file(int key, char *arg,
558
__attribute__((unused))
559
struct argp_state *state){
562
case 'g': /* --global-options */
563
case 'G': /* --global-env */
564
case 'o': /* --options-for */
565
case 'E': /* --env-for */
566
case 'd': /* --disable */
567
case 'e': /* --enable */
568
case 128: /* --plugin-dir */
570
case 129: /* --config-file */
572
argfile = strdup(arg);
574
case 130: /* --userid */
575
case 131: /* --groupid */
576
case 132: /* --debug */
577
case '?': /* --help */
578
case -3: /* --usage */
579
case 'V': /* --version */
583
return ARGP_ERR_UNKNOWN;
588
struct argp argp = { .options = options,
589
.parser = parse_opt_config_file,
464
591
.doc = "Mandos plugin runner -- Run plugins" };
466
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
467
if (ret == ARGP_ERR_UNKNOWN){
468
fprintf(stderr, "Unknown error while parsing arguments\n");
469
exitstatus = EXIT_FAILURE;
473
conffp = fopen(argfile, "r");
593
/* Parse using parse_opt_config_file() in order to get the custom
594
config file location, if any. */
595
ret = argp_parse(&argp, argc, argv,
596
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
604
error(0, errno, "argp_parse");
605
exitstatus = EX_OSERR;
608
exitstatus = EX_USAGE;
612
/* Reset to the normal argument parser */
613
argp.parser = parse_opt;
615
/* Open the configfile if available */
617
conffp = fopen(AFILE, "r");
619
conffp = fopen(argfile, "r");
474
621
if(conffp != NULL){
475
622
char *org_line = NULL;
476
623
char *p, *arg, *new_arg, *line;
479
625
const char whitespace_delims[] = " \r\t\f\v\n";
480
626
const char comment_delim[] = "#";
629
custom_argv = malloc(sizeof(char*) * 2);
630
if(custom_argv == NULL){
631
error(0, errno, "malloc");
632
exitstatus = EX_OSERR;
635
custom_argv[0] = argv[0];
636
custom_argv[1] = NULL;
638
/* for each line in the config file, strip whitespace and ignore
483
641
sret = getline(&org_line, &size, conffp);
489
647
arg = strsep(&line, comment_delim);
490
648
while((p = strsep(&arg, whitespace_delims)) != NULL){
494
652
new_arg = strdup(p);
495
custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);
496
if (custom_argv == NULL){
497
perror("add_to_argv");
498
exitstatus = EXIT_FAILURE;
654
error(0, errno, "strdup");
655
exitstatus = EX_OSERR;
661
custom_argv = realloc(custom_argv, sizeof(char *)
662
* ((unsigned int) custom_argc + 1));
663
if(custom_argv == NULL){
664
error(0, errno, "realloc");
665
exitstatus = EX_OSERR;
669
custom_argv[custom_argc-1] = new_arg;
670
custom_argv[custom_argc] = NULL;
674
ret = fclose(conffp);
675
} while(ret == EOF and errno == EINTR);
677
error(0, errno, "fclose");
678
exitstatus = EX_IOERR;
505
683
/* Check for harmful errors and go to fallback. Other errors might
506
684
not affect opening plugins */
507
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
509
exitstatus = EXIT_FAILURE;
685
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
686
error(0, errno, "fopen");
687
exitstatus = EX_OSERR;
691
/* If there were any arguments from the configuration file, pass
692
them to parser as command line arguments */
514
693
if(custom_argv != NULL){
515
custom_argv[0] = argv[0];
516
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
517
if (ret == ARGP_ERR_UNKNOWN){
518
fprintf(stderr, "Unknown error while parsing arguments\n");
519
exitstatus = EXIT_FAILURE;
694
ret = argp_parse(&argp, custom_argc, custom_argv,
695
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
703
error(0, errno, "argp_parse");
704
exitstatus = EX_OSERR;
707
exitstatus = EX_CONFIG;
712
/* Parse actual command line arguments, to let them override the
714
ret = argp_parse(&argp, argc, argv,
715
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
723
error(0, errno, "argp_parse");
724
exitstatus = EX_OSERR;
727
exitstatus = EX_USAGE;
525
732
for(plugin *p = plugin_list; p != NULL; p=p->next){
526
733
fprintf(stderr, "Plugin: %s has %d arguments\n",
528
735
for(char **a = p->argv; *a != NULL; a++){
529
736
fprintf(stderr, "\tArg: %s\n", *a);
531
fprintf(stderr, "...and %u environment variables\n", p->envc);
738
fprintf(stderr, "...and %d environment variables\n", p->envc);
532
739
for(char **a = p->environ; *a != NULL; a++){
533
740
fprintf(stderr, "\t%s\n", *a);
745
/* Strip permissions down to nobody */
748
error(0, errno, "setgid");
538
750
ret = setuid(uid);
548
dir = opendir(plugindir);
550
perror("Could not open plugin dir");
551
exitstatus = EXIT_FAILURE;
555
/* Set the FD_CLOEXEC flag on the directory, if possible */
752
error(0, errno, "setuid");
755
/* Open plugin directory with close_on_exec flag */
557
int dir_fd = dirfd(dir);
559
ret = set_cloexec_flag(dir_fd);
561
perror("set_cloexec_flag");
562
exitstatus = EXIT_FAILURE;
758
if(plugindir == NULL){
759
dir_fd = open(PDIR, O_RDONLY |
762
#else /* not O_CLOEXEC */
764
#endif /* not O_CLOEXEC */
767
dir_fd = open(plugindir, O_RDONLY |
770
#else /* not O_CLOEXEC */
772
#endif /* not O_CLOEXEC */
776
error(0, errno, "Could not open plugin dir");
777
exitstatus = EX_UNAVAILABLE;
782
/* Set the FD_CLOEXEC flag on the directory */
783
ret = set_cloexec_flag(dir_fd);
785
error(0, errno, "set_cloexec_flag");
786
TEMP_FAILURE_RETRY(close(dir_fd));
787
exitstatus = EX_OSERR;
790
#endif /* O_CLOEXEC */
792
dir = fdopendir(dir_fd);
794
error(0, errno, "Could not open plugin dir");
795
TEMP_FAILURE_RETRY(close(dir_fd));
796
exitstatus = EX_OSERR;
568
801
FD_ZERO(&rfds_all);
803
/* Read and execute any executable in the plugin directory*/
571
dirst = readdir(dir);
806
dirst = readdir(dir);
807
} while(dirst == NULL and errno == EINTR);
573
// All directory entries have been processed
809
/* All directory entries have been processed */
574
810
if(dirst == NULL){
577
exitstatus = EXIT_FAILURE;
812
error(0, errno, "readdir");
813
exitstatus = EX_IOERR;
686
931
if(p->environ[0] != NULL){
687
932
for(char **e = environ; *e != NULL; e++){
688
char *copy = strdup(*e);
693
if(not add_environment(p, copy)){
694
perror("add_environment");
933
if(not add_environment(p, *e, false)){
934
error(0, errno, "add_environment");
703
exitstatus = EXIT_FAILURE;
940
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
942
error(0, errno, "pipe");
943
exitstatus = EX_OSERR;
946
/* Ask OS to automatic close the pipe on exec */
706
947
ret = set_cloexec_flag(pipefd[0]);
708
perror("set_cloexec_flag");
709
exitstatus = EXIT_FAILURE;
949
error(0, errno, "set_cloexec_flag");
950
exitstatus = EX_OSERR;
712
953
ret = set_cloexec_flag(pipefd[1]);
714
perror("set_cloexec_flag");
715
exitstatus = EXIT_FAILURE;
955
error(0, errno, "set_cloexec_flag");
956
exitstatus = EX_OSERR;
718
959
/* Block SIGCHLD until process is safely in process list */
719
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
960
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
961
&sigchld_action.sa_mask,
721
perror("sigprocmask");
722
exitstatus = EXIT_FAILURE;
964
error(0, errno, "sigprocmask");
965
exitstatus = EX_OSERR;
725
// Starting a new process to be watched
968
/* Starting a new process to be watched */
972
} while(pid == -1 and errno == EINTR);
729
exitstatus = EXIT_FAILURE;
974
error(0, errno, "fork");
975
exitstatus = EX_OSERR;
733
979
/* this is the child process */
734
980
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
982
error(0, errno, "sigaction");
739
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
985
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
741
perror("sigprocmask");
987
error(0, errno, "sigprocmask");
745
991
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
993
error(0, errno, "dup2");
751
997
if(dirfd(dir) < 0){
756
1002
if(p->environ[0] == NULL){
757
1003
if(execv(filename, p->argv) < 0){
1004
error(0, errno, "execv for %s", filename);
762
1008
if(execve(filename, p->argv, p->environ) < 0){
1009
error(0, errno, "execve for %s", filename);
1015
/* Parent process */
1016
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
771
close(pipefd[1]); /* close unused write end of pipe */
772
process *new_process = malloc(sizeof(process));
773
if (new_process == NULL){
775
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1019
plugin *new_plugin = getplugin(dirst->d_name);
1020
if(new_plugin == NULL){
1021
error(0, errno, "getplugin");
1022
ret = (int)(TEMP_FAILURE_RETRY
1023
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
777
perror("sigprocmask");
1026
error(0, errno, "sigprocmask");
779
exitstatus = EXIT_FAILURE;
1028
exitstatus = EX_OSERR;
783
*new_process = (struct process){ .pid = pid,
785
.next = process_list };
787
process_list = new_process;
1032
new_plugin->pid = pid;
1033
new_plugin->fd = pipefd[0];
788
1035
/* Unblock SIGCHLD so signal handler can be run if this process
789
1036
has already completed */
790
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1037
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1038
&sigchld_action.sa_mask,
792
perror("sigprocmask");
793
exitstatus = EXIT_FAILURE;
1041
error(0, errno, "sigprocmask");
1042
exitstatus = EX_OSERR;
797
FD_SET(new_process->fd, &rfds_all);
1046
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
799
if (maxfd < new_process->fd){
800
maxfd = new_process->fd;
1049
if(maxfd < new_plugin->fd){
1050
maxfd = new_plugin->fd;
805
free_plugin_list(plugin_list);
1054
TEMP_FAILURE_RETRY(closedir(dir));
811
if (process_list == NULL){
812
fprintf(stderr, "No plugin processes started. Incorrect plugin"
1056
free_plugin(getplugin(NULL));
1058
for(plugin *p = plugin_list; p != NULL; p = p->next){
1062
if(p->next == NULL){
1063
fprintf(stderr, "No plugin processes started. Incorrect plugin"
1069
/* Main loop while running plugins exist */
817
1071
fd_set rfds = rfds_all;
818
1072
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
819
if (select_ret == -1){
821
exitstatus = EXIT_FAILURE;
1073
if(select_ret == -1 and errno != EINTR){
1074
error(0, errno, "select");
1075
exitstatus = EX_OSERR;
824
1078
/* OK, now either a process completed, or something can be read
825
1079
from one of them */
826
for(process *proc = process_list; proc ; proc = proc->next){
1080
for(plugin *proc = plugin_list; proc != NULL;){
827
1081
/* Is this process completely done? */
828
if(proc->eof and proc->completed){
1082
if(proc->completed and proc->eof){
829
1083
/* Only accept the plugin output if it exited cleanly */
830
1084
if(not WIFEXITED(proc->status)
831
1085
or WEXITSTATUS(proc->status) != 0){
832
1086
/* Bad exit by plugin */
834
1089
if(WIFEXITED(proc->status)){
835
fprintf(stderr, "Plugin %u exited with status %d\n",
836
(unsigned int) (proc->pid),
1090
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1091
" status %d\n", proc->name,
1092
(intmax_t) (proc->pid),
837
1093
WEXITSTATUS(proc->status));
838
} else if(WIFSIGNALED(proc->status)) {
839
fprintf(stderr, "Plugin %u killed by signal %d\n",
840
(unsigned int) (proc->pid),
841
WTERMSIG(proc->status));
1094
} else if(WIFSIGNALED(proc->status)){
1095
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1096
" signal %d: %s\n", proc->name,
1097
(intmax_t) (proc->pid),
1098
WTERMSIG(proc->status),
1099
strsignal(WTERMSIG(proc->status)));
842
1100
} else if(WCOREDUMP(proc->status)){
843
fprintf(stderr, "Plugin %d dumped core\n",
844
(unsigned int) (proc->pid));
1101
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1102
" core\n", proc->name, (intmax_t) (proc->pid));
847
1106
/* Remove the plugin */
848
FD_CLR(proc->fd, &rfds_all);
1107
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
849
1110
/* Block signal while modifying process_list */
850
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1111
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1113
&sigchld_action.sa_mask,
852
perror("sigprocmask");
853
exitstatus = EXIT_FAILURE;
1116
error(0, errno, "sigprocmask");
1117
exitstatus = EX_OSERR;
856
/* Delete this process entry from the list */
857
if(process_list == proc){
858
/* First one - simple */
859
process_list = proc->next;
861
/* Second one or later */
862
for(process *p = process_list; p != NULL; p = p->next){
864
p->next = proc->next;
1121
plugin *next_plugin = proc->next;
869
1125
/* We are done modifying process list, so unblock signal */
870
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
1126
ret = (int)(TEMP_FAILURE_RETRY
1127
(sigprocmask(SIG_UNBLOCK,
1128
&sigchld_action.sa_mask, NULL)));
873
perror("sigprocmask");
877
/* We deleted this process from the list, so we can't go
878
proc->next. Therefore, start over from the beginning of
1130
error(0, errno, "sigprocmask");
1131
exitstatus = EX_OSERR;
1135
if(plugin_list == NULL){
882
1142
/* This process exited nicely, so print its buffer */
884
1144
bool bret = print_out_password(proc->buffer,
885
1145
proc->buffer_length);
887
perror("print_out_password");
888
exitstatus = EXIT_FAILURE;
1147
error(0, errno, "print_out_password");
1148
exitstatus = EX_IOERR;
892
1153
/* This process has not completed. Does it have any output? */
893
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1154
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
894
1157
/* This process had nothing to say at this time */
897
1161
/* Before reading, make the process' data buffer large enough */
898
1162
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
899
1163
proc->buffer = realloc(proc->buffer, proc->buffer_size
900
1164
+ (size_t) BUFFER_SIZE);
901
if (proc->buffer == NULL){
903
exitstatus = EXIT_FAILURE;
1165
if(proc->buffer == NULL){
1166
error(0, errno, "malloc");
1167
exitstatus = EX_OSERR;
906
1170
proc->buffer_size += BUFFER_SIZE;
908
1172
/* Read from the process */
909
ret = read(proc->fd, proc->buffer + proc->buffer_length,
1173
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1175
+ proc->buffer_length,
912
1178
/* Read error from this process; ignore the error */
917
1184
proc->eof = true;
919
proc->buffer_length += (size_t) ret;
1186
proc->buffer_length += (size_t) sret;
927
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
1194
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1195
and exitstatus != EX_OK)){
928
1196
/* Fallback if all plugins failed, none are found or an error
931
1199
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
932
1200
char *passwordbuffer = getpass("Password: ");
933
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1201
size_t len = strlen(passwordbuffer);
1202
/* Strip trailing newline */
1203
if(len > 0 and passwordbuffer[len-1] == '\n'){
1204
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1207
bret = print_out_password(passwordbuffer, len);
935
perror("print_out_password");
936
exitstatus = EXIT_FAILURE;
1209
error(0, errno, "print_out_password");
1210
exitstatus = EX_IOERR;
940
1214
/* Restore old signal handler */
941
1215
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
944
exitstatus = EXIT_FAILURE;
1217
error(0, errno, "sigaction");
1218
exitstatus = EX_OSERR;
947
1221
if(custom_argv != NULL){
948
for(char **arg = custom_argv; *arg != NULL; arg++){
1222
for(char **arg = custom_argv+1; *arg != NULL; arg++){
951
1225
free(custom_argv);
953
free_plugin_list(plugin_list);
955
1228
if(dir != NULL){
959
/* Free the process list and kill the processes */
960
for(process *next; process_list != NULL; process_list = next){
961
next = process_list->next;
962
close(process_list->fd);
963
ret = kill(process_list->pid, SIGTERM);
964
if(ret == -1 and errno != ESRCH){
965
/* set-uid proccesses migth not get closed */
1232
/* Kill the processes */
1233
for(plugin *p = plugin_list; p != NULL; p = p->next){
1236
ret = kill(p->pid, SIGTERM);
1237
if(ret == -1 and errno != ESRCH){
1238
/* Set-uid proccesses might not get closed */
1239
error(0, errno, "kill");
968
free(process_list->buffer);
972
1244
/* Wait for any remaining child processes to terminate */
974
1246
ret = wait(NULL);
975
1247
} while(ret >= 0);
976
1248
if(errno != ECHILD){
1249
error(0, errno, "wait");
980
1257
return exitstatus;