38
37
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
39
38
FD_SET(), FD_ISSET(), FD_CLR */
40
39
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
WEXITSTATUS(), WTERMSIG(),
43
41
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
44
42
#include <iso646.h> /* and, or, not */
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
43
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
44
readdir(), closedir(), dirfd() */
47
45
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
48
46
fcntl(), setuid(), setgid(),
49
47
F_GETFD, F_SETFD, FD_CLOEXEC,
50
48
access(), pipe(), fork(), close()
51
dup2(), STDOUT_FILENO, _exit(),
49
dup2, STDOUT_FILENO, _exit(),
52
50
execv(), write(), read(),
54
52
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal(), strcmp(), strncmp() */
54
#include <string.h> /* strsep, strlen(), asprintf() */
58
55
#include <errno.h> /* errno */
59
56
#include <argp.h> /* struct argp_option, struct
60
57
argp_state, struct argp,
375
324
{ .name = "global-options", .key = 'g',
376
325
.arg = "OPTION[,OPTION[,...]]",
377
326
.doc = "Options passed to all plugins" },
378
{ .name = "global-env", .key = 'G',
327
{ .name = "global-envs", .key = 'e',
379
328
.arg = "VAR=value",
380
329
.doc = "Environment variable passed to all plugins" },
381
330
{ .name = "options-for", .key = 'o',
382
331
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
383
332
.doc = "Options passed only to specified plugin" },
384
{ .name = "env-for", .key = 'E',
333
{ .name = "envs-for", .key = 'f',
385
334
.arg = "PLUGIN:ENV=value",
386
335
.doc = "Environment variable passed to specified plugin" },
387
336
{ .name = "disable", .key = 'd',
389
338
.doc = "Disable a specific plugin", .group = 1 },
390
{ .name = "enable", .key = 'e',
392
.doc = "Enable a specific plugin", .group = 1 },
393
339
{ .name = "plugin-dir", .key = 128,
394
340
.arg = "DIRECTORY",
395
341
.doc = "Specify a different plugin directory", .group = 2 },
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 },
342
{ .name = "userid", .key = 129,
343
.arg = "ID", .flags = 0,
344
.doc = "User ID the plugins will run as", .group = 2 },
345
{ .name = "groupid", .key = 130,
346
.arg = "ID", .flags = 0,
347
.doc = "Group ID the plugins will run as", .group = 2 },
348
{ .name = "debug", .key = 131,
349
.doc = "Debug mode", .group = 3 },
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 */
353
error_t parse_opt (int key, char *arg, struct argp_state *state) {
354
/* Get the INPUT argument from `argp_parse', which we know is a
355
pointer to our plugin list pointer. */
356
plugin **plugins = state->input;
361
while((p = strsep(&arg, ",")) != NULL){
365
if(not add_argument(getplugin(NULL, plugins), p)){
366
perror("add_argument");
367
return ARGP_ERR_UNKNOWN;
377
char *envdef = strdup(arg);
381
if(not add_environment(getplugin(NULL, plugins), envdef)){
382
perror("add_environment");
388
char *p_name = strsep(&arg, ":");
389
if(p_name[0] == '\0'){
392
char *opt = strsep(&arg, ":");
398
while((p = strsep(&opt, ",")) != NULL){
402
if(not add_argument(getplugin(p_name, plugins), p)){
403
perror("add_argument");
404
return ARGP_ERR_UNKNOWN;
462
415
char *envdef = strchr(arg, ':');
463
416
if(envdef == NULL){
464
argp_error(state, "No colon in \"%s\"", arg);
419
char *p_name = strndup(arg, (size_t) (envdef-arg));
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 */
424
if(not add_environment(getplugin(p_name, plugins), envdef)){
425
perror("add_environment");
431
plugin *p = getplugin(arg, plugins);
433
return ARGP_ERR_UNKNOWN;
442
uid = (uid_t)strtol(arg, NULL, 10);
445
gid = (gid_t)strtol(arg, NULL, 10);
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,
451
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
456
return ARGP_ERR_UNKNOWN;
461
plugin *plugin_list = NULL;
463
struct argp argp = { .options = options, .parser = parse_opt,
464
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
591
465
.doc = "Mandos plugin runner -- Run plugins" };
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");
467
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
468
if (ret == ARGP_ERR_UNKNOWN){
469
fprintf(stderr, "Unknown error while parsing arguments\n");
470
exitstatus = EXIT_FAILURE;
474
conffp = fopen(argfile, "r");
621
475
if(conffp != NULL){
622
476
char *org_line = NULL;
623
477
char *p, *arg, *new_arg, *line;
625
480
const char whitespace_delims[] = " \r\t\f\v\n";
626
481
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
641
484
sret = getline(&org_line, &size, conffp);
647
490
arg = strsep(&line, comment_delim);
648
491
while((p = strsep(&arg, whitespace_delims)) != NULL){
652
495
new_arg = strdup(p);
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;
496
custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);
497
if (custom_argv == NULL){
498
perror("add_to_argv");
499
exitstatus = EXIT_FAILURE;
674
ret = fclose(conffp);
675
} while(ret == EOF and errno == EINTR);
677
error(0, errno, "fclose");
678
exitstatus = EX_IOERR;
683
506
/* Check for harmful errors and go to fallback. Other errors might
684
507
not affect opening plugins */
685
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
686
error(0, errno, "fopen");
687
exitstatus = EX_OSERR;
508
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
510
exitstatus = EXIT_FAILURE;
691
/* If there were any arguments from the configuration file, pass
692
them to parser as command line arguments */
693
515
if(custom_argv != NULL){
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;
516
custom_argv[0] = argv[0];
517
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0,
519
if (ret == ARGP_ERR_UNKNOWN){
520
fprintf(stderr, "Unknown error while parsing arguments\n");
521
exitstatus = EXIT_FAILURE;
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;
732
527
for(plugin *p = plugin_list; p != NULL; p=p->next){
733
528
fprintf(stderr, "Plugin: %s has %d arguments\n",
735
530
for(char **a = p->argv; *a != NULL; a++){
736
531
fprintf(stderr, "\tArg: %s\n", *a);
738
fprintf(stderr, "...and %d environment variables\n", p->envc);
533
fprintf(stderr, "...and %u environment variables\n", p->envc);
739
534
for(char **a = p->environ; *a != NULL; a++){
740
535
fprintf(stderr, "\t%s\n", *a);
745
/* Strip permissions down to nobody */
748
error(0, errno, "setgid");
752
error(0, errno, "setuid");
755
/* Open plugin directory with close_on_exec flag */
550
dir = opendir(plugindir);
552
perror("Could not open plugin dir");
553
exitstatus = EXIT_FAILURE;
557
/* Set the FD_CLOEXEC flag on the directory, if possible */
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;
559
int dir_fd = dirfd(dir);
561
ret = set_cloexec_flag(dir_fd);
563
perror("set_cloexec_flag");
564
exitstatus = EXIT_FAILURE;
801
570
FD_ZERO(&rfds_all);
803
/* Read and execute any executable in the plugin directory*/
806
dirst = readdir(dir);
807
} while(dirst == NULL and errno == EINTR);
573
dirst = readdir(dir);
809
/* All directory entries have been processed */
575
// All directory entries have been processed
810
576
if(dirst == NULL){
812
error(0, errno, "readdir");
813
exitstatus = EX_IOERR;
579
exitstatus = EXIT_FAILURE;
931
688
if(p->environ[0] != NULL){
932
689
for(char **e = environ; *e != NULL; e++){
933
if(not add_environment(p, *e, false)){
934
error(0, errno, "add_environment");
690
char *copy = strdup(*e);
695
if(not add_environment(p, copy)){
696
perror("add_environment");
940
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
942
error(0, errno, "pipe");
943
exitstatus = EX_OSERR;
705
exitstatus = EXIT_FAILURE;
946
/* Ask OS to automatic close the pipe on exec */
947
708
ret = set_cloexec_flag(pipefd[0]);
949
error(0, errno, "set_cloexec_flag");
950
exitstatus = EX_OSERR;
710
perror("set_cloexec_flag");
711
exitstatus = EXIT_FAILURE;
953
714
ret = set_cloexec_flag(pipefd[1]);
955
error(0, errno, "set_cloexec_flag");
956
exitstatus = EX_OSERR;
716
perror("set_cloexec_flag");
717
exitstatus = EXIT_FAILURE;
959
720
/* Block SIGCHLD until process is safely in process list */
960
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
961
&sigchld_action.sa_mask,
721
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
964
error(0, errno, "sigprocmask");
965
exitstatus = EX_OSERR;
723
perror("sigprocmask");
724
exitstatus = EXIT_FAILURE;
968
/* Starting a new process to be watched */
972
} while(pid == -1 and errno == EINTR);
727
// Starting a new process to be watched
974
error(0, errno, "fork");
975
exitstatus = EX_OSERR;
731
exitstatus = EXIT_FAILURE;
979
735
/* this is the child process */
980
736
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
982
error(0, errno, "sigaction");
985
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
741
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
987
error(0, errno, "sigprocmask");
743
perror("sigprocmask");
991
747
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
993
error(0, errno, "dup2");
997
753
if(dirfd(dir) < 0){
1002
758
if(p->environ[0] == NULL){
1003
759
if(execv(filename, p->argv) < 0){
1004
error(0, errno, "execv");
1008
764
if(execve(filename, p->argv, p->environ) < 0){
1009
error(0, errno, "execve");
1015
/* Parent process */
1016
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
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,
773
close(pipefd[1]); /* close unused write end of pipe */
774
process *new_process = malloc(sizeof(process));
775
if (new_process == NULL){
777
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1026
error(0, errno, "sigprocmask");
779
perror("sigprocmask");
1028
exitstatus = EX_OSERR;
781
exitstatus = EXIT_FAILURE;
1032
new_plugin->pid = pid;
1033
new_plugin->fd = pipefd[0];
785
*new_process = (struct process){ .pid = pid,
787
.next = process_list };
789
process_list = new_process;
1035
790
/* Unblock SIGCHLD so signal handler can be run if this process
1036
791
has already completed */
1037
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1038
&sigchld_action.sa_mask,
792
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1041
error(0, errno, "sigprocmask");
1042
exitstatus = EX_OSERR;
794
perror("sigprocmask");
795
exitstatus = EXIT_FAILURE;
1046
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
799
FD_SET(new_process->fd, &rfds_all);
1049
if(maxfd < new_plugin->fd){
1050
maxfd = new_plugin->fd;
801
if (maxfd < new_process->fd){
802
maxfd = new_process->fd;
1054
TEMP_FAILURE_RETRY(closedir(dir));
807
free_plugin_list(plugin_list);
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"
813
if (process_list == NULL){
814
fprintf(stderr, "No plugin processes started. Incorrect plugin"
1069
/* Main loop while running plugins exist */
1071
819
fd_set rfds = rfds_all;
1072
820
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1073
if(select_ret == -1 and errno != EINTR){
1074
error(0, errno, "select");
1075
exitstatus = EX_OSERR;
821
if (select_ret == -1){
823
exitstatus = EXIT_FAILURE;
1078
826
/* OK, now either a process completed, or something can be read
1079
827
from one of them */
1080
for(plugin *proc = plugin_list; proc != NULL;){
828
for(process *proc = process_list; proc ; proc = proc->next){
1081
829
/* Is this process completely done? */
1082
if(proc->completed and proc->eof){
830
if(proc->eof and proc->completed){
1083
831
/* Only accept the plugin output if it exited cleanly */
1084
832
if(not WIFEXITED(proc->status)
1085
833
or WEXITSTATUS(proc->status) != 0){
1086
834
/* Bad exit by plugin */
1089
836
if(WIFEXITED(proc->status)){
1090
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1091
" status %d\n", proc->name,
1092
(intmax_t) (proc->pid),
837
fprintf(stderr, "Plugin %u exited with status %d\n",
838
(unsigned int) (proc->pid),
1093
839
WEXITSTATUS(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)));
840
} else if(WIFSIGNALED(proc->status)) {
841
fprintf(stderr, "Plugin %u killed by signal %d\n",
842
(unsigned int) (proc->pid),
843
WTERMSIG(proc->status));
1100
844
} else if(WCOREDUMP(proc->status)){
1101
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1102
" core\n", proc->name, (intmax_t) (proc->pid));
845
fprintf(stderr, "Plugin %d dumped core\n",
846
(unsigned int) (proc->pid));
1106
849
/* Remove the plugin */
1107
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
850
FD_CLR(proc->fd, &rfds_all);
1110
851
/* Block signal while modifying process_list */
1111
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1113
&sigchld_action.sa_mask,
852
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1116
error(0, errno, "sigprocmask");
1117
exitstatus = EX_OSERR;
854
perror("sigprocmask");
855
exitstatus = EXIT_FAILURE;
1121
plugin *next_plugin = proc->next;
858
/* Delete this process entry from the list */
859
if(process_list == proc){
860
/* First one - simple */
861
process_list = proc->next;
863
/* Second one or later */
864
for(process *p = process_list; p != NULL; p = p->next){
866
p->next = proc->next;
1125
871
/* We are done modifying process list, so unblock signal */
1126
ret = (int)(TEMP_FAILURE_RETRY
1127
(sigprocmask(SIG_UNBLOCK,
1128
&sigchld_action.sa_mask, NULL)));
872
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
1130
error(0, errno, "sigprocmask");
1131
exitstatus = EX_OSERR;
1135
if(plugin_list == NULL){
875
perror("sigprocmask");
879
/* We deleted this process from the list, so we can't go
880
proc->next. Therefore, start over from the beginning of
1142
884
/* This process exited nicely, so print its buffer */
1144
886
bool bret = print_out_password(proc->buffer,
1145
887
proc->buffer_length);
1147
error(0, errno, "print_out_password");
1148
exitstatus = EX_IOERR;
889
perror("print_out_password");
890
exitstatus = EXIT_FAILURE;
1153
894
/* This process has not completed. Does it have any output? */
1154
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
895
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1157
896
/* This process had nothing to say at this time */
1161
899
/* Before reading, make the process' data buffer large enough */
1162
900
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1163
901
proc->buffer = realloc(proc->buffer, proc->buffer_size
1164
902
+ (size_t) BUFFER_SIZE);
1165
if(proc->buffer == NULL){
1166
error(0, errno, "malloc");
1167
exitstatus = EX_OSERR;
903
if (proc->buffer == NULL){
905
exitstatus = EXIT_FAILURE;
1170
908
proc->buffer_size += BUFFER_SIZE;
1172
910
/* Read from the process */
1173
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1175
+ proc->buffer_length,
911
ret = read(proc->fd, proc->buffer + proc->buffer_length,
1178
914
/* Read error from this process; ignore the error */
1184
919
proc->eof = true;
1186
proc->buffer_length += (size_t) sret;
921
proc->buffer_length += (size_t) ret;
1194
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1195
and exitstatus != EX_OK)){
929
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
1196
930
/* Fallback if all plugins failed, none are found or an error
1199
933
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
1200
934
char *passwordbuffer = getpass("Password: ");
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
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1209
error(0, errno, "print_out_password");
1210
exitstatus = EX_IOERR;
937
perror("print_out_password");
938
exitstatus = EXIT_FAILURE;
1214
942
/* Restore old signal handler */
1215
943
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1217
error(0, errno, "sigaction");
1218
exitstatus = EX_OSERR;
946
exitstatus = EXIT_FAILURE;
1221
949
if(custom_argv != NULL){
1222
for(char **arg = custom_argv+1; *arg != NULL; arg++){
950
for(char **arg = custom_argv; *arg != NULL; arg++){
1225
953
free(custom_argv);
955
free_plugin_list(plugin_list);
1228
957
if(dir != NULL){
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");
961
/* Free the process list and kill the processes */
962
for(process *next; process_list != NULL; process_list = next){
963
next = process_list->next;
964
close(process_list->fd);
965
ret = kill(process_list->pid, SIGTERM);
966
if(ret == -1 and errno != ESRCH){
967
/* set-uid proccesses migth not get closed */
970
free(process_list->buffer);
1244
974
/* Wait for any remaining child processes to terminate */
1246
976
ret = wait(NULL);
1247
977
} while(ret >= 0);
1248
978
if(errno != ECHILD){
1249
error(0, errno, "wait");
1257
982
return exitstatus;