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(),
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,
61
58
argp_parse(), ARGP_ERR_UNKNOWN,
62
ARGP_KEY_END, ARGP_KEY_ARG,
59
ARGP_KEY_END, ARGP_KEY_ARG, error_t */
64
60
#include <signal.h> /* struct sigaction, sigemptyset(),
65
61
sigaddset(), sigaction(),
66
62
sigprocmask(), SIG_BLOCK, SIGCHLD,
67
SIG_UNBLOCK, kill(), sig_atomic_t
63
SIG_UNBLOCK, kill() */
69
64
#include <errno.h> /* errno, EBADF */
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
72
66
#define BUFFER_SIZE 256
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;
67
#define ARGFILE "/conf/conf.d/mandos/plugin-runner.conf"
69
const char *argp_program_version = "plugin-runner 1.0";
78
70
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
74
typedef struct process{
80
86
typedef struct plugin{
81
87
char *name; /* can be NULL or any plugin name */
88
/* Variables used for running processes*/
95
volatile sig_atomic_t completed;
97
93
struct plugin *next;
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))){
96
static plugin *getplugin(char *name, plugin **plugin_list){
97
for (plugin *p = *plugin_list; p != NULL; p = p->next){
99
or (p->name and name and (strcmp(p->name, name) == 0))){
112
103
/* Create a new plugin */
113
plugin *new_plugin = NULL;
115
new_plugin = malloc(sizeof(plugin));
116
} while(new_plugin == NULL and errno == EINTR);
117
if(new_plugin == NULL){
120
char *copy_name = NULL;
123
copy_name = strdup(name);
124
} while(copy_name == NULL and errno == EINTR);
125
if(copy_name == NULL){
131
*new_plugin = (plugin){ .name = copy_name,
134
.next = plugin_list };
137
new_plugin->argv = malloc(sizeof(char *) * 2);
138
} while(new_plugin->argv == NULL and errno == EINTR);
139
if(new_plugin->argv == NULL){
104
plugin *new_plugin = malloc(sizeof(plugin));
105
if (new_plugin == NULL){
108
char *copy_name = strdup(name);
109
if(copy_name == NULL){
113
*new_plugin = (plugin) { .name = copy_name,
117
.next = *plugin_list };
119
new_plugin->argv = malloc(sizeof(char *) * 2);
120
if (new_plugin->argv == NULL){
141
121
free(new_plugin);
144
124
new_plugin->argv[0] = copy_name;
145
125
new_plugin->argv[1] = NULL;
148
new_plugin->environ = malloc(sizeof(char *));
149
} while(new_plugin->environ == NULL and errno == EINTR);
127
new_plugin->environ = malloc(sizeof(char *));
150
128
if(new_plugin->environ == NULL){
152
129
free(new_plugin->argv);
153
130
free(new_plugin);
156
133
new_plugin->environ[0] = NULL;
158
134
/* Append the new plugin to the list */
159
plugin_list = new_plugin;
135
*plugin_list = new_plugin;
160
136
return new_plugin;
199
170
/* Add to a plugin's environment */
200
static bool add_environment(plugin *p, const char *def, bool replace){
171
static bool add_environment(plugin *p, const char *def){
204
/* namelen = length of name of environment variable */
205
size_t namelen = (size_t)(strchrnul(def, '=') - def);
206
/* Search for this environment variable */
207
for(char **e = p->environ; *e != NULL; e++){
208
if(strncmp(*e, def, namelen + 1) == 0){
209
/* It already exists */
213
new = realloc(*e, strlen(def) + 1);
214
} while(new == NULL and errno == EINTR);
224
175
return add_to_char_array(def, &(p->environ), &(p->envc));
228
180
* Based on the example in the GNU LibC manual chapter 13.13 "File
229
181
* Descriptor Flags".
230
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
182
* *Note File Descriptor Flags:(libc)Descriptor Flags.
232
static int set_cloexec_flag(int fd){
233
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
184
static int set_cloexec_flag(int fd)
186
int ret = fcntl(fd, F_GETFD, 0);
234
187
/* If reading the flags failed, return error indication now. */
238
191
/* Store modified flag word in the descriptor. */
239
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
192
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
195
process *process_list = NULL;
244
/* Mark processes as completed when they exit, and save their exit
197
/* Mark a process as completed when it exits, and save its exit
246
static void handle_sigchld(__attribute__((unused)) int sig){
247
int old_errno = errno;
249
plugin *proc = plugin_list;
251
pid_t pid = waitpid(-1, &status, WNOHANG);
253
/* Only still running child processes */
258
/* No child processes */
264
/* A child exited, find it in process_list */
265
while(proc != NULL and proc->pid != pid){
269
/* Process not found in process list */
272
proc->status = status;
199
void handle_sigchld(__attribute__((unused)) int sig){
200
process *proc = process_list;
202
pid_t pid = wait(&status);
207
while(proc != NULL and proc->pid != pid){
211
/* Process not found in process list */
214
proc->status = status;
215
proc->completed = true;
278
/* Prints out a password to stdout */
279
static bool print_out_password(const char *buffer, size_t length){
218
bool print_out_password(const char *buffer, size_t length){
220
if(length>0 and buffer[length-1] == '\n'){
281
223
for(size_t written = 0; written < length; written += (size_t)ret){
282
224
ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
283
225
length - written));
291
/* Removes and free a plugin from the plugin list */
292
static void free_plugin(plugin *plugin_node){
294
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
297
free(plugin_node->argv);
298
for(char **env = plugin_node->environ; *env != NULL; env++){
301
free(plugin_node->environ);
302
free(plugin_node->buffer);
304
/* Removes the plugin from the singly-linked list */
305
if(plugin_node == plugin_list){
306
/* First one - simple */
307
plugin_list = plugin_list->next;
309
/* Second one or later */
310
for(plugin *p = plugin_list; p != NULL; p = p->next){
311
if(p->next == plugin_node){
312
p->next = plugin_node->next;
233
char **add_to_argv(char **argv, int *argc, char *arg){
236
argv = malloc(sizeof(char*) * 2);
240
argv[0] = NULL; /* Will be set to argv[0] in main before parsing */
244
argv = realloc(argv, sizeof(char *)
245
* ((unsigned int) *argc + 1));
321
static void free_plugin_list(void){
322
while(plugin_list != NULL){
323
free_plugin(plugin_list);
254
static void free_plugin_list(plugin *plugin_list){
255
for(plugin *next = plugin_list; plugin_list != NULL; plugin_list = next){
256
next = plugin_list->next;
257
free(plugin_list->name);
258
for(char **arg = plugin_list->argv; *arg != NULL; arg++){
261
free(plugin_list->argv);
262
for(char **env = plugin_list->environ; *env != NULL; env++){
265
free(plugin_list->environ);
327
270
int main(int argc, char *argv[]){
328
char *plugindir = NULL;
329
char *argfile = NULL;
271
const char *plugindir = "/lib/mandos/plugins.d";
272
const char *argfile = ARGFILE;
331
274
size_t d_name_len;
365
307
{ .name = "global-options", .key = 'g',
366
308
.arg = "OPTION[,OPTION[,...]]",
367
309
.doc = "Options passed to all plugins" },
368
{ .name = "global-env", .key = 'G',
310
{ .name = "global-envs", .key = 'e',
369
311
.arg = "VAR=value",
370
312
.doc = "Environment variable passed to all plugins" },
371
313
{ .name = "options-for", .key = 'o',
372
314
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
373
315
.doc = "Options passed only to specified plugin" },
374
{ .name = "env-for", .key = 'E',
316
{ .name = "envs-for", .key = 'f',
375
317
.arg = "PLUGIN:ENV=value",
376
318
.doc = "Environment variable passed to specified plugin" },
377
319
{ .name = "disable", .key = 'd',
379
321
.doc = "Disable a specific plugin", .group = 1 },
380
{ .name = "enable", .key = 'e',
382
.doc = "Enable a specific plugin", .group = 1 },
383
322
{ .name = "plugin-dir", .key = 128,
384
323
.arg = "DIRECTORY",
385
324
.doc = "Specify a different plugin directory", .group = 2 },
386
{ .name = "config-file", .key = 129,
388
.doc = "Specify a different configuration file", .group = 2 },
389
{ .name = "userid", .key = 130,
390
.arg = "ID", .flags = 0,
391
.doc = "User ID the plugins will run as", .group = 3 },
392
{ .name = "groupid", .key = 131,
393
.arg = "ID", .flags = 0,
394
.doc = "Group ID the plugins will run as", .group = 3 },
395
{ .name = "debug", .key = 132,
396
.doc = "Debug mode", .group = 4 },
325
{ .name = "userid", .key = 129,
326
.arg = "ID", .flags = 0,
327
.doc = "User ID the plugins will run as", .group = 2 },
328
{ .name = "groupid", .key = 130,
329
.arg = "ID", .flags = 0,
330
.doc = "Group ID the plugins will run as", .group = 2 },
331
{ .name = "debug", .key = 131,
332
.doc = "Debug mode", .group = 3 },
400
error_t parse_opt(int key, char *arg, __attribute__((unused))
401
struct argp_state *state){
405
case 'g': /* --global-options */
408
while((plugin_option = strsep(&arg, ",")) != NULL){
409
if(plugin_option[0] == '\0'){
336
error_t parse_opt (int key, char *arg, struct argp_state *state) {
337
/* Get the INPUT argument from `argp_parse', which we know is a
338
pointer to our plugin list pointer. */
339
plugin **plugins = state->input;
344
while((p = strsep(&arg, ",")) != NULL){
412
if(not add_argument(getplugin(NULL), plugin_option)){
348
if(not add_argument(getplugin(NULL, plugins), p)){
413
349
perror("add_argument");
414
350
return ARGP_ERR_UNKNOWN;
419
case 'G': /* --global-env */
423
if(not add_environment(getplugin(NULL), arg, true)){
424
perror("add_environment");
360
char *envdef = strdup(arg);
364
if(not add_environment(getplugin(NULL, plugins), envdef)){
365
perror("add_environment");
427
case 'o': /* --options-for */
429
char *plugin_name = strsep(&arg, ":");
430
if(plugin_name[0] == '\0'){
434
while((plugin_option = strsep(&arg, ",")) != NULL){
435
if(not add_argument(getplugin(plugin_name), plugin_option)){
436
perror("add_argument");
437
return ARGP_ERR_UNKNOWN;
371
char *p_name = strsep(&arg, ":");
372
if(p_name[0] == '\0'){
375
char *opt = strsep(&arg, ":");
381
while((p = strsep(&opt, ",")) != NULL){
385
if(not add_argument(getplugin(p_name, plugins), p)){
386
perror("add_argument");
387
return ARGP_ERR_UNKNOWN;
442
case 'E': /* --env-for */
448
399
if(envdef == NULL){
452
if(not add_environment(getplugin(arg), envdef+1, true)){
402
char *p_name = strndup(arg, (size_t) (envdef-arg));
407
if(not add_environment(getplugin(p_name, plugins), envdef)){
453
408
perror("add_environment");
457
case 'd': /* --disable */
459
plugin *p = getplugin(arg);
414
plugin *p = getplugin(arg, plugins);
461
416
return ARGP_ERR_UNKNOWN;
463
418
p->disabled = true;
466
case 'e': /* --enable */
468
plugin *p = getplugin(arg);
470
return ARGP_ERR_UNKNOWN;
475
case 128: /* --plugin-dir */
477
plugindir = strdup(arg);
478
if(plugindir == NULL){
482
case 129: /* --config-file */
483
/* This is already done by parse_opt_config_file() */
485
case 130: /* --userid */
487
tmpmax = strtoimax(arg, &tmp, 10);
488
if(errno != 0 or tmp == arg or *tmp != '\0'
489
or tmpmax != (uid_t)tmpmax){
490
fprintf(stderr, "Bad user ID number: \"%s\", using %"
491
PRIdMAX "\n", arg, (intmax_t)uid);
496
case 131: /* --groupid */
498
tmpmax = strtoimax(arg, &tmp, 10);
499
if(errno != 0 or tmp == arg or *tmp != '\0'
500
or tmpmax != (gid_t)tmpmax){
501
fprintf(stderr, "Bad group ID number: \"%s\", using %"
502
PRIdMAX "\n", arg, (intmax_t)gid);
507
case 132: /* --debug */
425
uid = (uid_t)strtol(arg, NULL, 10);
428
gid = (gid_t)strtol(arg, NULL, 10);
511
* When adding more options before this line, remember to also add a
512
* "case" to the "parse_opt_config_file" function below.
515
/* Cryptsetup always passes an argument, which is an empty
516
string if "none" was specified in /etc/crypttab. So if
517
argument was empty, we ignore it silently. */
519
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
525
return ARGP_ERR_UNKNOWN;
530
/* This option parser is the same as parse_opt() above, except it
531
ignores everything but the --config-file option. */
532
error_t parse_opt_config_file(int key, char *arg,
533
__attribute__((unused))
534
struct argp_state *state){
536
case 'g': /* --global-options */
537
case 'G': /* --global-env */
538
case 'o': /* --options-for */
539
case 'E': /* --env-for */
540
case 'd': /* --disable */
541
case 'e': /* --enable */
542
case 128: /* --plugin-dir */
544
case 129: /* --config-file */
546
argfile = strdup(arg);
551
case 130: /* --userid */
552
case 131: /* --groupid */
553
case 132: /* --debug */
558
return ARGP_ERR_UNKNOWN;
563
struct argp argp = { .options = options,
564
.parser = parse_opt_config_file,
434
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
439
return ARGP_ERR_UNKNOWN;
444
plugin *plugin_list = NULL;
446
struct argp argp = { .options = options, .parser = parse_opt,
447
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
566
448
.doc = "Mandos plugin runner -- Run plugins" };
568
/* Parse using parse_opt_config_file() in order to get the custom
569
config file location, if any. */
570
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
571
if(ret == ARGP_ERR_UNKNOWN){
450
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
451
if (ret == ARGP_ERR_UNKNOWN){
572
452
fprintf(stderr, "Unknown error while parsing arguments\n");
573
453
exitstatus = EXIT_FAILURE;
577
/* Reset to the normal argument parser */
578
argp.parser = parse_opt;
580
/* Open the configfile if available */
582
conffp = fopen(AFILE, "r");
584
conffp = fopen(argfile, "r");
457
conffp = fopen(argfile, "r");
586
458
if(conffp != NULL){
587
459
char *org_line = NULL;
588
460
char *p, *arg, *new_arg, *line;
590
463
const char whitespace_delims[] = " \r\t\f\v\n";
591
464
const char comment_delim[] = "#";
594
custom_argv = malloc(sizeof(char*) * 2);
595
if(custom_argv == NULL){
597
exitstatus = EXIT_FAILURE;
600
custom_argv[0] = argv[0];
601
custom_argv[1] = NULL;
603
/* for each line in the config file, strip whitespace and ignore
606
467
sret = getline(&org_line, &size, conffp);
612
473
arg = strsep(&line, comment_delim);
613
474
while((p = strsep(&arg, whitespace_delims)) != NULL){
617
478
new_arg = strdup(p);
620
exitstatus = EXIT_FAILURE;
626
custom_argv = realloc(custom_argv, sizeof(char *)
627
* ((unsigned int) custom_argc + 1));
628
if(custom_argv == NULL){
630
exitstatus = EXIT_FAILURE;
634
custom_argv[custom_argc-1] = new_arg;
635
custom_argv[custom_argc] = NULL;
479
custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);
480
if (custom_argv == NULL){
481
perror("add_to_argv");
482
exitstatus = EXIT_FAILURE;
639
ret = fclose(conffp);
640
} while(ret == EOF and errno == EINTR);
643
exitstatus = EXIT_FAILURE;
648
489
/* Check for harmful errors and go to fallback. Other errors might
649
490
not affect opening plugins */
650
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
491
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
652
493
exitstatus = EXIT_FAILURE;
656
/* If there was any arguments from configuration file,
657
pass them to parser as command arguments */
658
498
if(custom_argv != NULL){
659
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
661
if(ret == ARGP_ERR_UNKNOWN){
499
custom_argv[0] = argv[0];
500
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
501
if (ret == ARGP_ERR_UNKNOWN){
662
502
fprintf(stderr, "Unknown error while parsing arguments\n");
663
503
exitstatus = EXIT_FAILURE;
668
/* Parse actual command line arguments, to let them override the
670
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
671
if(ret == ARGP_ERR_UNKNOWN){
672
fprintf(stderr, "Unknown error while parsing arguments\n");
673
exitstatus = EXIT_FAILURE;
678
509
for(plugin *p = plugin_list; p != NULL; p=p->next){
679
510
fprintf(stderr, "Plugin: %s has %d arguments\n",
941
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
944
plugin *new_plugin = getplugin(dirst->d_name);
945
if(new_plugin == NULL){
947
ret = (int)(TEMP_FAILURE_RETRY
948
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
755
close(pipefd[1]); /* close unused write end of pipe */
756
process *new_process = malloc(sizeof(process));
757
if (new_process == NULL){
759
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
951
perror("sigprocmask");
761
perror("sigprocmask");
953
763
exitstatus = EXIT_FAILURE;
957
new_plugin->pid = pid;
958
new_plugin->fd = pipefd[0];
767
*new_process = (struct process){ .pid = pid,
769
.next = process_list };
771
process_list = new_process;
960
772
/* Unblock SIGCHLD so signal handler can be run if this process
961
773
has already completed */
962
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
963
&sigchld_action.sa_mask,
774
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
966
776
perror("sigprocmask");
967
777
exitstatus = EXIT_FAILURE;
971
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
781
FD_SET(new_process->fd, &rfds_all);
974
if(maxfd < new_plugin->fd){
975
maxfd = new_plugin->fd;
783
if (maxfd < new_process->fd){
784
maxfd = new_process->fd;
979
TEMP_FAILURE_RETRY(closedir(dir));
789
free_plugin_list(plugin_list);
981
free_plugin(getplugin(NULL));
983
for(plugin *p = plugin_list; p != NULL; p = p->next){
988
fprintf(stderr, "No plugin processes started. Incorrect plugin"
794
if (process_list == NULL){
795
fprintf(stderr, "No plugin processes started. Incorrect plugin"
994
/* Main loop while running plugins exist */
996
800
fd_set rfds = rfds_all;
997
801
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
998
if(select_ret == -1 and errno != EINTR){
802
if (select_ret == -1){
999
803
perror("select");
1000
804
exitstatus = EXIT_FAILURE;
1003
807
/* OK, now either a process completed, or something can be read
1004
808
from one of them */
1005
for(plugin *proc = plugin_list; proc != NULL;){
809
for(process *proc = process_list; proc ; proc = proc->next){
1006
810
/* Is this process completely done? */
1007
if(proc->completed and proc->eof){
811
if(proc->eof and proc->completed){
1008
812
/* Only accept the plugin output if it exited cleanly */
1009
813
if(not WIFEXITED(proc->status)
1010
814
or WEXITSTATUS(proc->status) != 0){
1011
815
/* Bad exit by plugin */
1014
817
if(WIFEXITED(proc->status)){
1015
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1016
" status %d\n", proc->name,
1017
(intmax_t) (proc->pid),
818
fprintf(stderr, "Plugin %u exited with status %d\n",
819
(unsigned int) (proc->pid),
1018
820
WEXITSTATUS(proc->status));
1019
} else if(WIFSIGNALED(proc->status)){
1020
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1021
" signal %d: %s\n", proc->name,
1022
(intmax_t) (proc->pid),
1023
WTERMSIG(proc->status),
1024
strsignal(WTERMSIG(proc->status)));
821
} else if(WIFSIGNALED(proc->status)) {
822
fprintf(stderr, "Plugin %u killed by signal %d\n",
823
(unsigned int) (proc->pid),
824
WTERMSIG(proc->status));
1025
825
} else if(WCOREDUMP(proc->status)){
1026
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1027
" core\n", proc->name, (intmax_t) (proc->pid));
826
fprintf(stderr, "Plugin %d dumped core\n",
827
(unsigned int) (proc->pid));
1031
830
/* Remove the plugin */
1032
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
831
FD_CLR(proc->fd, &rfds_all);
1035
832
/* Block signal while modifying process_list */
1036
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1038
&sigchld_action.sa_mask,
833
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1041
835
perror("sigprocmask");
1042
836
exitstatus = EXIT_FAILURE;
1046
plugin *next_plugin = proc->next;
839
/* Delete this process entry from the list */
840
if(process_list == proc){
841
/* First one - simple */
842
process_list = proc->next;
844
/* Second one or later */
845
for(process *p = process_list; p != NULL; p = p->next){
847
p->next = proc->next;
1050
852
/* We are done modifying process list, so unblock signal */
1051
ret = (int)(TEMP_FAILURE_RETRY
1052
(sigprocmask(SIG_UNBLOCK,
1053
&sigchld_action.sa_mask, NULL)));
853
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
1055
856
perror("sigprocmask");
1056
exitstatus = EXIT_FAILURE;
1060
if(plugin_list == NULL){
860
/* We deleted this process from the list, so we can't go
861
proc->next. Therefore, start over from the beginning of
1067
865
/* This process exited nicely, so print its buffer */
1069
bool bret = print_out_password(proc->buffer,
1070
proc->buffer_length);
867
bool bret = print_out_password(proc->buffer, proc->buffer_length);
1072
869
perror("print_out_password");
1073
870
exitstatus = EXIT_FAILURE;
1078
874
/* This process has not completed. Does it have any output? */
1079
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
875
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1082
876
/* This process had nothing to say at this time */
1086
879
/* Before reading, make the process' data buffer large enough */
1087
880
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1088
881
proc->buffer = realloc(proc->buffer, proc->buffer_size
1089
882
+ (size_t) BUFFER_SIZE);
1090
if(proc->buffer == NULL){
883
if (proc->buffer == NULL){
1091
884
perror("malloc");
1092
885
exitstatus = EXIT_FAILURE;
1095
888
proc->buffer_size += BUFFER_SIZE;
1097
890
/* Read from the process */
1098
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1100
+ proc->buffer_length,
891
ret = read(proc->fd, proc->buffer + proc->buffer_length,
1103
894
/* Read error from this process; ignore the error */
1109
899
proc->eof = true;
1111
proc->buffer_length += (size_t) sret;
901
proc->buffer_length += (size_t) ret;
1119
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1120
/* Fallback if all plugins failed, none are found or an error
909
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
910
/* Fallback if all plugins failed, none are found or an error occured */
1123
912
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
1124
913
char *passwordbuffer = getpass("Password: ");
1125
size_t len = strlen(passwordbuffer);
1126
/* Strip trailing newline */
1127
if(len > 0 and passwordbuffer[len-1] == '\n'){
1128
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1131
bret = print_out_password(passwordbuffer, len);
914
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1133
916
perror("print_out_password");
1134
917
exitstatus = EXIT_FAILURE;