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(), strcpy(),
56
#include <string.h> /* strsep, strlen(), asprintf(),
56
58
#include <errno.h> /* errno */
57
59
#include <argp.h> /* struct argp_option, struct
58
60
argp_state, struct argp,
59
61
argp_parse(), ARGP_ERR_UNKNOWN,
60
ARGP_KEY_END, ARGP_KEY_ARG, error_t */
62
ARGP_KEY_END, ARGP_KEY_ARG,
61
64
#include <signal.h> /* struct sigaction, sigemptyset(),
62
65
sigaddset(), sigaction(),
63
66
sigprocmask(), SIG_BLOCK, SIGCHLD,
64
SIG_UNBLOCK, kill() */
67
SIG_UNBLOCK, kill(), sig_atomic_t
65
69
#include <errno.h> /* errno, EBADF */
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
67
72
#define BUFFER_SIZE 256
68
#define CONFFILE "/conf/conf.d/mandos/client.conf"
70
const char *argp_program_version = "mandos-client 1.0";
74
#define PDIR "/lib/mandos/plugins.d"
75
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
77
const char *argp_program_version = "plugin-runner " VERSION;
71
78
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
75
typedef struct process{
80
typedef struct plugin{
81
char *name; /* can be NULL or any plugin name */
88
/* Variables used for running processes*/
79
92
size_t buffer_size;
80
93
size_t buffer_length;
95
volatile sig_atomic_t completed;
87
typedef struct plugin{
88
char *name; /* can be NULL or any plugin name */
92
97
struct plugin *next;
95
static plugin *getplugin(char *name, plugin **plugin_list){
96
for (plugin *p = *plugin_list; p != NULL; p = p->next){
98
or (p->name and name and (strcmp(p->name, name) == 0))){
100
static plugin *plugin_list = NULL;
102
/* Gets an existing plugin based on name,
103
or if none is found, creates a new one */
104
static plugin *getplugin(char *name){
105
/* Check for exiting plugin with that name */
106
for(plugin *p = plugin_list; p != NULL; p = p->next){
108
or (p->name and name and (strcmp(p->name, name) == 0))){
102
112
/* Create a new plugin */
103
113
plugin *new_plugin = malloc(sizeof(plugin));
104
if (new_plugin == NULL){
108
new_plugin->name = name;
114
if(new_plugin == NULL){
117
char *copy_name = NULL;
119
copy_name = strdup(name);
120
if(copy_name == NULL){
126
*new_plugin = (plugin){ .name = copy_name,
129
.next = plugin_list };
109
131
new_plugin->argv = malloc(sizeof(char *) * 2);
110
if (new_plugin->argv == NULL){
132
if(new_plugin->argv == NULL){
114
new_plugin->argv[0] = name;
137
new_plugin->argv[0] = copy_name;
115
138
new_plugin->argv[1] = NULL;
116
new_plugin->argc = 1;
117
new_plugin->disabled = false;
118
new_plugin->next = *plugin_list;
140
new_plugin->environ = malloc(sizeof(char *));
141
if(new_plugin->environ == NULL){
143
free(new_plugin->argv);
147
new_plugin->environ[0] = NULL;
119
149
/* Append the new plugin to the list */
120
*plugin_list = new_plugin;
150
plugin_list = new_plugin;
121
151
return new_plugin;
124
static void addargument(plugin *p, char *arg){
125
p->argv[p->argc] = arg;
126
p->argv = realloc(p->argv, sizeof(char *) * (size_t)(p->argc + 2));
127
if (p->argv == NULL){
132
p->argv[p->argc] = NULL;
154
/* Helper function for add_argument and add_environment */
155
static bool add_to_char_array(const char *new, char ***array,
157
/* Resize the pointed-to array to hold one more pointer */
158
*array = realloc(*array, sizeof(char *)
159
* (size_t) ((*len) + 2));
164
/* Make a copy of the new string */
165
char *copy = strdup(new);
169
/* Insert the copy */
170
(*array)[*len] = copy;
172
/* Add a new terminating NULL pointer to the last element */
173
(*array)[*len] = NULL;
177
/* Add to a plugin's argument vector */
178
static bool add_argument(plugin *p, const char *arg){
182
return add_to_char_array(arg, &(p->argv), &(p->argc));
185
/* Add to a plugin's environment */
186
static bool add_environment(plugin *p, const char *def, bool replace){
190
/* namelen = length of name of environment variable */
191
size_t namelen = (size_t)(strchrnul(def, '=') - def);
192
/* Search for this environment variable */
193
for(char **e = p->environ; *e != NULL; e++){
194
if(strncmp(*e, def, namelen + 1) == 0){
195
/* It already exists */
197
char *new = realloc(*e, strlen(def) + 1);
207
return add_to_char_array(def, &(p->environ), &(p->envc));
246
348
{ .name = "global-options", .key = 'g',
247
349
.arg = "OPTION[,OPTION[,...]]",
248
350
.doc = "Options passed to all plugins" },
351
{ .name = "global-env", .key = 'G',
353
.doc = "Environment variable passed to all plugins" },
249
354
{ .name = "options-for", .key = 'o',
250
355
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
251
356
.doc = "Options passed only to specified plugin" },
357
{ .name = "env-for", .key = 'E',
358
.arg = "PLUGIN:ENV=value",
359
.doc = "Environment variable passed to specified plugin" },
252
360
{ .name = "disable", .key = 'd',
254
362
.doc = "Disable a specific plugin", .group = 1 },
363
{ .name = "enable", .key = 'e',
365
.doc = "Enable a specific plugin", .group = 1 },
255
366
{ .name = "plugin-dir", .key = 128,
256
367
.arg = "DIRECTORY",
257
368
.doc = "Specify a different plugin directory", .group = 2 },
258
{ .name = "userid", .key = 129,
259
.arg = "ID", .flags = 0,
260
.doc = "User ID the plugins will run as", .group = 2 },
261
{ .name = "groupid", .key = 130,
262
.arg = "ID", .flags = 0,
263
.doc = "Group ID the plugins will run as", .group = 2 },
264
{ .name = "debug", .key = 131,
265
.doc = "Debug mode", .group = 3 },
369
{ .name = "config-file", .key = 129,
371
.doc = "Specify a different configuration file", .group = 2 },
372
{ .name = "userid", .key = 130,
373
.arg = "ID", .flags = 0,
374
.doc = "User ID the plugins will run as", .group = 3 },
375
{ .name = "groupid", .key = 131,
376
.arg = "ID", .flags = 0,
377
.doc = "Group ID the plugins will run as", .group = 3 },
378
{ .name = "debug", .key = 132,
379
.doc = "Debug mode", .group = 4 },
269
error_t parse_opt (int key, char *arg, struct argp_state *state) {
270
/* Get the INPUT argument from `argp_parse', which we know is a
271
pointer to our plugin list pointer. */
272
plugin **plugins = state->input;
277
while((p = strsep(&arg, ",")) != NULL){
383
error_t parse_opt(int key, char *arg, __attribute__((unused))
384
struct argp_state *state){
387
case 'g': /* --global-options */
390
while((plugin_option = strsep(&arg, ",")) != NULL){
391
if(plugin_option[0] == '\0'){
281
addargument(getplugin(NULL, plugins), p);
287
char *name = strsep(&arg, ":");
291
char *opt = strsep(&arg, ":");
297
while((p = strsep(&opt, ",")) != NULL){
301
addargument(getplugin(name, plugins), p);
308
getplugin(arg, plugins)->disabled = true;
315
uid = (uid_t)strtol(arg, NULL, 10);
318
gid = (gid_t)strtol(arg, NULL, 10);
394
if(not add_argument(getplugin(NULL), plugin_option)){
395
perror("add_argument");
396
return ARGP_ERR_UNKNOWN;
401
case 'G': /* --global-env */
405
if(not add_environment(getplugin(NULL), arg, true)){
406
perror("add_environment");
409
case 'o': /* --options-for */
411
char *plugin_name = strsep(&arg, ":");
412
if(plugin_name[0] == '\0'){
416
while((plugin_option = strsep(&arg, ",")) != NULL){
417
if(not add_argument(getplugin(plugin_name), plugin_option)){
418
perror("add_argument");
419
return ARGP_ERR_UNKNOWN;
424
case 'E': /* --env-for */
429
char *envdef = strchr(arg, ':');
434
if(not add_environment(getplugin(arg), envdef+1, true)){
435
perror("add_environment");
439
case 'd': /* --disable */
441
plugin *p = getplugin(arg);
443
return ARGP_ERR_UNKNOWN;
448
case 'e': /* --enable */
450
plugin *p = getplugin(arg);
452
return ARGP_ERR_UNKNOWN;
457
case 128: /* --plugin-dir */
459
plugindir = strdup(arg);
460
if(plugindir == NULL){
464
case 129: /* --config-file */
465
/* This is already done by parse_opt_config_file() */
467
case 130: /* --userid */
469
tmpmax = strtoimax(arg, &tmp, 10);
470
if(errno != 0 or tmp == arg or *tmp != '\0'
471
or tmpmax != (uid_t)tmpmax){
472
fprintf(stderr, "Bad user ID number: \"%s\", using %"
473
PRIdMAX "\n", arg, (intmax_t)uid);
478
case 131: /* --groupid */
480
tmpmax = strtoimax(arg, &tmp, 10);
481
if(errno != 0 or tmp == arg or *tmp != '\0'
482
or tmpmax != (gid_t)tmpmax){
483
fprintf(stderr, "Bad group ID number: \"%s\", using %"
484
PRIdMAX "\n", arg, (intmax_t)gid);
489
case 132: /* --debug */
324
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
329
return ARGP_ERR_UNKNOWN;
334
plugin *plugin_list = NULL;
336
struct argp argp = { .options = options, .parser = parse_opt,
337
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
493
* When adding more options before this line, remember to also add a
494
* "case" to the "parse_opt_config_file" function below.
497
/* Cryptsetup always passes an argument, which is an empty
498
string if "none" was specified in /etc/crypttab. So if
499
argument was empty, we ignore it silently. */
501
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
507
return ARGP_ERR_UNKNOWN;
512
/* This option parser is the same as parse_opt() above, except it
513
ignores everything but the --config-file option. */
514
error_t parse_opt_config_file(int key, char *arg,
515
__attribute__((unused))
516
struct argp_state *state){
518
case 'g': /* --global-options */
519
case 'G': /* --global-env */
520
case 'o': /* --options-for */
521
case 'E': /* --env-for */
522
case 'd': /* --disable */
523
case 'e': /* --enable */
524
case 128: /* --plugin-dir */
526
case 129: /* --config-file */
528
argfile = strdup(arg);
533
case 130: /* --userid */
534
case 131: /* --groupid */
535
case 132: /* --debug */
540
return ARGP_ERR_UNKNOWN;
545
struct argp argp = { .options = options,
546
.parser = parse_opt_config_file,
338
548
.doc = "Mandos plugin runner -- Run plugins" };
340
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
341
if (ret == ARGP_ERR_UNKNOWN){
550
/* Parse using parse_opt_config_file() in order to get the custom
551
config file location, if any. */
552
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
553
if(ret == ARGP_ERR_UNKNOWN){
342
554
fprintf(stderr, "Unknown error while parsing arguments\n");
343
555
exitstatus = EXIT_FAILURE;
347
conffp = fopen(conffile, "r");
559
/* Reset to the normal argument parser */
560
argp.parser = parse_opt;
562
/* Open the configfile if available */
564
conffp = fopen(AFILE, "r");
566
conffp = fopen(argfile, "r");
348
568
if(conffp != NULL){
349
569
char *org_line = NULL;
570
char *p, *arg, *new_arg, *line;
352
char *p, *arg, *new_arg, *line;
353
572
const char whitespace_delims[] = " \r\t\f\v\n";
354
573
const char comment_delim[] = "#";
576
custom_argv = malloc(sizeof(char*) * 2);
577
if(custom_argv == NULL){
579
exitstatus = EXIT_FAILURE;
582
custom_argv[0] = argv[0];
583
custom_argv[1] = NULL;
585
/* for each line in the config file, strip whitespace and ignore
357
588
sret = getline(&org_line, &size, conffp);
363
594
arg = strsep(&line, comment_delim);
364
595
while((p = strsep(&arg, whitespace_delims)) != NULL){
368
599
new_arg = strdup(p);
369
custom_argv = addcustomargument(custom_argv, &custom_argc, new_arg);
370
if (custom_argv == NULL){
371
perror("addcustomargument");
372
exitstatus = EXIT_FAILURE;
602
exitstatus = EXIT_FAILURE;
608
custom_argv = realloc(custom_argv, sizeof(char *)
609
* ((unsigned int) custom_argc + 1));
610
if(custom_argv == NULL){
612
exitstatus = EXIT_FAILURE;
616
custom_argv[custom_argc-1] = new_arg;
617
custom_argv[custom_argc] = NULL;
379
/* check for harmfull errors */
380
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
622
/* Check for harmful errors and go to fallback. Other errors might
623
not affect opening plugins */
624
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
382
626
exitstatus = EXIT_FAILURE;
630
/* If there was any arguments from configuration file,
631
pass them to parser as command arguments */
387
632
if(custom_argv != NULL){
388
custom_argv[0] = argv[0];
389
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
390
if (ret == ARGP_ERR_UNKNOWN){
633
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
635
if(ret == ARGP_ERR_UNKNOWN){
391
636
fprintf(stderr, "Unknown error while parsing arguments\n");
392
637
exitstatus = EXIT_FAILURE;
642
/* Parse actual command line arguments, to let them override the
644
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
645
if(ret == ARGP_ERR_UNKNOWN){
646
fprintf(stderr, "Unknown error while parsing arguments\n");
647
exitstatus = EXIT_FAILURE;
398
652
for(plugin *p = plugin_list; p != NULL; p=p->next){
399
653
fprintf(stderr, "Plugin: %s has %d arguments\n",
531
plugin *p = getplugin(dirst->d_name, &plugin_list);
533
805
/* Add global arguments to argument list for this plugin */
534
plugin *g = getplugin(NULL, &plugin_list);
535
for(char **a = g->argv + 1; *a != NULL; a++){
806
plugin *g = getplugin(NULL);
808
for(char **a = g->argv + 1; *a != NULL; a++){
809
if(not add_argument(p, *a)){
810
perror("add_argument");
813
/* Add global environment variables */
814
for(char **e = g->environ; *e != NULL; e++){
815
if(not add_environment(p, *e, false)){
816
perror("add_environment");
821
/* If this plugin has any environment variables, we will call
822
using execve and need to duplicate the environment from this
824
if(p->environ[0] != NULL){
825
for(char **e = environ; *e != NULL; e++){
826
if(not add_environment(p, *e, false)){
827
perror("add_environment");
540
833
ret = pipe(pipefd);
543
836
exitstatus = EXIT_FAILURE;
839
/* Ask OS to automatic close the pipe on exec */
546
840
ret = set_cloexec_flag(pipefd[0]);
548
842
perror("set_cloexec_flag");
549
843
exitstatus = EXIT_FAILURE;
552
846
ret = set_cloexec_flag(pipefd[1]);
554
848
perror("set_cloexec_flag");
555
849
exitstatus = EXIT_FAILURE;
558
852
/* Block SIGCHLD until process is safely in process list */
559
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
853
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
561
855
perror("sigprocmask");
562
856
exitstatus = EXIT_FAILURE;
565
// Starting a new process to be watched
859
/* Starting a new process to be watched */
566
860
pid_t pid = fork();
569
863
exitstatus = EXIT_FAILURE;
573
867
/* this is the child process */
593
887
above and must now close it manually here. */
596
if(execv(filename, p->argv) < 0){
890
if(p->environ[0] == NULL){
891
if(execv(filename, p->argv) < 0){
896
if(execve(filename, p->argv, p->environ) < 0){
904
close(pipefd[1]); /* Close unused write end of pipe */
604
close(pipefd[1]); /* close unused write end of pipe */
605
process *new_process = malloc(sizeof(process));
606
if (new_process == NULL){
608
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
906
plugin *new_plugin = getplugin(dirst->d_name);
907
if(new_plugin == NULL){
909
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
610
perror("sigprocmask");
911
perror("sigprocmask");
612
913
exitstatus = EXIT_FAILURE;
616
*new_process = (struct process){ .pid = pid,
618
.next = process_list };
620
process_list = new_process;
917
new_plugin->pid = pid;
918
new_plugin->fd = pipefd[0];
621
920
/* Unblock SIGCHLD so signal handler can be run if this process
622
921
has already completed */
623
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
922
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
625
924
perror("sigprocmask");
626
925
exitstatus = EXIT_FAILURE;
630
FD_SET(new_process->fd, &rfds_all);
632
if (maxfd < new_process->fd){
633
maxfd = new_process->fd;
638
/* Free the plugin list */
639
for(plugin *next; plugin_list != NULL; plugin_list = next){
640
next = plugin_list->next;
641
free(plugin_list->argv);
929
FD_SET(new_plugin->fd, &rfds_all);
931
if(maxfd < new_plugin->fd){
932
maxfd = new_plugin->fd;
648
if (process_list == NULL){
649
fprintf(stderr, "No plugin processes started. Incorrect plugin"
938
free_plugin(getplugin(NULL));
940
for(plugin *p = plugin_list; p != NULL; p = p->next){
945
fprintf(stderr, "No plugin processes started. Incorrect plugin"
951
/* Main loop while running plugins exist */
654
953
fd_set rfds = rfds_all;
655
954
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
656
if (select_ret == -1){
955
if(select_ret == -1){
657
956
perror("select");
658
957
exitstatus = EXIT_FAILURE;
661
960
/* OK, now either a process completed, or something can be read
662
961
from one of them */
663
for(process *proc = process_list; proc ; proc = proc->next){
962
for(plugin *proc = plugin_list; proc != NULL;){
664
963
/* Is this process completely done? */
665
if(proc->eof and proc->completed){
964
if(proc->completed and proc->eof){
666
965
/* Only accept the plugin output if it exited cleanly */
667
966
if(not WIFEXITED(proc->status)
668
967
or WEXITSTATUS(proc->status) != 0){
669
968
/* Bad exit by plugin */
671
971
if(WIFEXITED(proc->status)){
672
fprintf(stderr, "Plugin %u exited with status %d\n",
673
(unsigned int) (proc->pid),
972
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
973
" status %d\n", proc->name,
974
(intmax_t) (proc->pid),
674
975
WEXITSTATUS(proc->status));
675
} else if(WIFSIGNALED(proc->status)) {
676
fprintf(stderr, "Plugin %u killed by signal %d\n",
677
(unsigned int) (proc->pid),
678
WTERMSIG(proc->status));
976
} else if(WIFSIGNALED(proc->status)){
977
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
978
" signal %d: %s\n", proc->name,
979
(intmax_t) (proc->pid),
980
WTERMSIG(proc->status),
981
strsignal(WTERMSIG(proc->status)));
679
982
} else if(WCOREDUMP(proc->status)){
680
fprintf(stderr, "Plugin %d dumped core\n",
681
(unsigned int) (proc->pid));
983
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
984
" core\n", proc->name, (intmax_t) (proc->pid));
684
988
/* Remove the plugin */
685
989
FD_CLR(proc->fd, &rfds_all);
686
991
/* Block signal while modifying process_list */
687
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
992
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
689
994
perror("sigprocmask");
690
995
exitstatus = EXIT_FAILURE;
693
/* Delete this process entry from the list */
694
if(process_list == proc){
695
/* First one - simple */
696
process_list = proc->next;
698
/* Second one or later */
699
for(process *p = process_list; p != NULL; p = p->next){
701
p->next = proc->next;
999
plugin *next_plugin = proc->next;
706
1003
/* We are done modifying process list, so unblock signal */
707
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
1004
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
710
1007
perror("sigprocmask");
714
/* We deleted this process from the list, so we can't go
715
proc->next. Therefore, start over from the beginning of
1008
exitstatus = EXIT_FAILURE;
1012
if(plugin_list == NULL){
719
1019
/* This process exited nicely, so print its buffer */
721
bool bret = print_out_password(proc->buffer, proc->buffer_length);
1021
bool bret = print_out_password(proc->buffer,
1022
proc->buffer_length);
723
1024
perror("print_out_password");
724
1025
exitstatus = EXIT_FAILURE;
728
1030
/* This process has not completed. Does it have any output? */
729
1031
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
730
1032
/* This process had nothing to say at this time */
733
1036
/* Before reading, make the process' data buffer large enough */
734
1037
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
735
1038
proc->buffer = realloc(proc->buffer, proc->buffer_size
736
1039
+ (size_t) BUFFER_SIZE);
737
if (proc->buffer == NULL){
1040
if(proc->buffer == NULL){
738
1041
perror("malloc");
739
1042
exitstatus = EXIT_FAILURE;
742
1045
proc->buffer_size += BUFFER_SIZE;
744
1047
/* Read from the process */
745
ret = read(proc->fd, proc->buffer + proc->buffer_length,
1048
sret = read(proc->fd, proc->buffer + proc->buffer_length,
748
1051
/* Read error from this process; ignore the error */
753
1057
proc->eof = true;
755
proc->buffer_length += (size_t) ret;
1059
proc->buffer_length += (size_t) sret;
763
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
764
/* Fallback if all plugins failed, none are found or an error occured */
1067
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1068
/* Fallback if all plugins failed, none are found or an error
766
1071
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
767
1072
char *passwordbuffer = getpass("Password: ");
768
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1073
size_t len = strlen(passwordbuffer);
1074
/* Strip trailing newline */
1075
if(len > 0 and passwordbuffer[len-1] == '\n'){
1076
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1079
bret = print_out_password(passwordbuffer, len);
770
1081
perror("print_out_password");
771
1082
exitstatus = EXIT_FAILURE;
776
1086
/* Restore old signal handler */
777
sigaction(SIGCHLD, &old_sigchld_action, NULL);
781
/* Free the plugin list */
782
for(plugin *next; plugin_list != NULL; plugin_list = next){
783
next = plugin_list->next;
784
free(plugin_list->argv);
1087
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1089
perror("sigaction");
1090
exitstatus = EXIT_FAILURE;
1093
if(custom_argv != NULL){
1094
for(char **arg = custom_argv+1; *arg != NULL; arg++){
788
1100
if(dir != NULL){
792
/* Free the process list and kill the processes */
793
for(process *next; process_list != NULL; process_list = next){
794
next = process_list->next;
795
close(process_list->fd);
796
ret = kill(process_list->pid, SIGTERM);
797
if(ret == -1 and errno != ESRCH){
798
/* set-uid proccesses migth not get closed */
1104
/* Kill the processes */
1105
for(plugin *p = plugin_list; p != NULL; p = p->next){
1108
ret = kill(p->pid, SIGTERM);
1109
if(ret == -1 and errno != ESRCH){
1110
/* Set-uid proccesses might not get closed */
801
free(process_list->buffer);
805
1116
/* Wait for any remaining child processes to terminate */