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- Committer: Björn Påhlsson
- Date: 2008-08-10 20:22:27 UTC
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 63.
- Revision ID: belorn@braxen-20080810202227-nz1a4g8pxfm6051l
Added fallback to mandos-client
- files added:
- network-protocol.txt
- files removed:
- .bzrignore
- files renamed:
- plugin-runner.c => mandos-client.c
- plugin-runner.xml => mandos-client.xml
- files modified:
- Makefile
added
removed
mandos-client.c
21
21
* Contact the authors at <mandos@fukt.bsnet.se>.
22
22
*/
23
23
24
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
25
asprintf() */
24
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
25
26
26
#include <stddef.h> /* size_t, NULL */
27
27
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
28
28
EXIT_SUCCESS, realloc() */
51
51
close() */
52
52
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
53
53
FD_CLOEXEC */
54
#include <string.h> /* strsep, strlen(), asprintf() */
54
#include <string.h> /* strtok, strlen(), strcpy(),
55
strcat() */
55
56
#include <errno.h> /* errno */
56
57
#include <argp.h> /* struct argp_option, struct
57
58
argp_state, struct argp,
58
59
argp_parse(), ARGP_ERR_UNKNOWN,
59
ARGP_KEY_END, ARGP_KEY_ARG,
60
error_t */
60
ARGP_KEY_END, ARGP_KEY_ARG, error_t */
61
61
#include <signal.h> /* struct sigaction, sigemptyset(),
62
62
sigaddset(), sigaction(),
63
63
sigprocmask(), SIG_BLOCK, SIGCHLD,
66
66
67
67
#define BUFFER_SIZE 256
68
68
69
#define PDIR "/lib/mandos/plugins.d"
70
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
71
72
const char *argp_program_version = "plugin-runner 1.0";
69
const char *argp_program_version = "mandos-client 1.0";
73
70
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
74
71
75
72
struct process;
81
78
size_t buffer_size;
82
79
size_t buffer_length;
83
80
bool eof;
84
volatile bool completed;
85
volatile int status;
81
bool completed;
82
int status;
86
83
struct process *next;
87
84
} process;
88
85
90
87
char *name; /* can be NULL or any plugin name */
91
88
char **argv;
92
89
int argc;
93
char **environ;
94
int envc;
95
90
bool disabled;
96
91
struct plugin *next;
97
92
} plugin;
106
101
/* Create a new plugin */
107
102
plugin *new_plugin = malloc(sizeof(plugin));
108
103
if (new_plugin == NULL){
109
return NULL;
110
}
111
char *copy_name = NULL;
112
if(name != NULL){
113
copy_name = strdup(name);
114
if(copy_name == NULL){
115
return NULL;
116
}
117
}
118
119
*new_plugin = (plugin) { .name = copy_name,
120
.argc = 1,
121
.envc = 0,
122
.disabled = false,
123
.next = *plugin_list };
124
104
perror("malloc");
105
exit(EXIT_FAILURE);
106
}
107
new_plugin->name = name;
125
108
new_plugin->argv = malloc(sizeof(char *) * 2);
126
109
if (new_plugin->argv == NULL){
127
free(copy_name);
128
free(new_plugin);
129
return NULL;
110
perror("malloc");
111
exit(EXIT_FAILURE);
130
112
}
131
new_plugin->argv[0] = copy_name;
113
new_plugin->argv[0] = name;
132
114
new_plugin->argv[1] = NULL;
133
134
new_plugin->environ = malloc(sizeof(char *));
135
if(new_plugin->environ == NULL){
136
free(copy_name);
137
free(new_plugin->argv);
138
free(new_plugin);
139
return NULL;
140
}
141
new_plugin->environ[0] = NULL;
115
new_plugin->argc = 1;
116
new_plugin->disabled = false;
117
new_plugin->next = *plugin_list;
142
118
/* Append the new plugin to the list */
143
119
*plugin_list = new_plugin;
144
120
return new_plugin;
145
121
}
146
122
147
/* Helper function for add_argument and add_environment */
148
static bool add_to_char_array(const char *new, char ***array,
149
int *len){
150
/* Resize the pointed-to array to hold one more pointer */
151
*array = realloc(*array, sizeof(char *)
152
* (size_t) ((*len) + 2));
153
/* Malloc check */
154
if(*array == NULL){
155
return false;
156
}
157
/* Make a copy of the new string */
158
char *copy = strdup(new);
159
if(copy == NULL){
160
return false;
161
}
162
/* Insert the copy */
163
(*array)[*len] = copy;
164
(*len)++;
165
/* Add a new terminating NULL pointer to the last element */
166
(*array)[*len] = NULL;
167
return true;
168
}
169
170
/* Add to a plugin's argument vector */
171
static bool add_argument(plugin *p, const char *arg){
172
if(p == NULL){
173
return false;
174
}
175
return add_to_char_array(arg, &(p->argv), &(p->argc));
176
}
177
178
/* Add to a plugin's environment */
179
static bool add_environment(plugin *p, const char *def){
180
if(p == NULL){
181
return false;
182
}
183
return add_to_char_array(def, &(p->environ), &(p->envc));
184
}
185
123
static void addargument(plugin *p, char *arg){
124
p->argv[p->argc] = arg;
125
p->argv = realloc(p->argv, sizeof(char *) * (size_t)(p->argc + 2));
126
if (p->argv == NULL){
127
perror("malloc");
128
exit(EXIT_FAILURE);
129
}
130
p->argc++;
131
p->argv[p->argc] = NULL;
132
}
186
133
187
134
/*
188
135
* Based on the example in the GNU LibC manual chapter 13.13 "File
202
149
203
150
process *process_list = NULL;
204
151
205
/* Mark processes as completed when they exit, and save their exit
152
/* Mark a process as completed when it exits, and save its exit
206
153
status. */
207
154
void handle_sigchld(__attribute__((unused)) int sig){
208
while(true){
209
process *proc = process_list;
210
int status;
211
pid_t pid = waitpid(-1, &status, WNOHANG);
212
if(pid == 0){
213
/* Only still running child processes */
214
break;
215
}
216
if(pid == -1){
217
if (errno != ECHILD){
218
perror("waitpid");
219
}
220
/* No child processes */
221
break;
222
}
223
224
/* A child exited, find it in process_list */
225
while(proc != NULL and proc->pid != pid){
226
proc = proc->next;
227
}
228
if(proc == NULL){
229
/* Process not found in process list */
230
continue;
231
}
232
proc->status = status;
233
proc->completed = true;
234
}
155
process *proc = process_list;
156
int status;
157
pid_t pid = wait(&status);
158
if(pid == -1){
159
perror("wait");
160
return;
161
}
162
while(proc != NULL and proc->pid != pid){
163
proc = proc->next;
164
}
165
if(proc == NULL){
166
/* Process not found in process list */
167
return;
168
}
169
proc->status = status;
170
proc->completed = true;
235
171
}
236
172
237
173
bool print_out_password(const char *buffer, size_t length){
238
ssize_t ret;
239
if(length>0 and buffer[length-1] == '\n'){
240
length--;
241
}
242
for(size_t written = 0; written < length; written += (size_t)ret){
174
size_t ret;
175
for(size_t written = 0; written < length; written += ret){
243
176
ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
244
177
length - written));
245
178
if(ret < 0){
249
182
return true;
250
183
}
251
184
252
static void free_plugin_list(plugin *plugin_list){
253
for(plugin *next; plugin_list != NULL; plugin_list = next){
254
next = plugin_list->next;
255
for(char **arg = plugin_list->argv; *arg != NULL; arg++){
256
free(*arg);
257
}
258
free(plugin_list->argv);
259
for(char **env = plugin_list->environ; *env != NULL; env++){
260
free(*env);
261
}
262
free(plugin_list->environ);
263
free(plugin_list);
264
}
265
}
266
267
185
int main(int argc, char *argv[]){
268
char *plugindir = NULL;
269
char *argfile = NULL;
270
FILE *conffp;
186
const char *plugindir = "/conf/conf.d/mandos/plugins.d";
271
187
size_t d_name_len;
272
188
DIR *dir = NULL;
273
189
struct dirent *dirst;
281
197
struct sigaction old_sigchld_action;
282
198
struct sigaction sigchld_action = { .sa_handler = handle_sigchld,
283
199
.sa_flags = SA_NOCLDSTOP };
284
char **custom_argv = NULL;
285
int custom_argc = 0;
200
char *plus_options = NULL;
201
char **plus_argv = NULL;
286
202
287
203
/* Establish a signal handler */
288
204
sigemptyset(&sigchld_action.sa_mask);
289
205
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
290
if(ret == -1){
206
if(ret < 0){
291
207
perror("sigaddset");
292
exitstatus = EXIT_FAILURE;
293
goto fallback;
208
exit(EXIT_FAILURE);
294
209
}
295
210
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
296
if(ret == -1){
211
if(ret < 0){
297
212
perror("sigaction");
298
exitstatus = EXIT_FAILURE;
299
goto fallback;
213
exit(EXIT_FAILURE);
300
214
}
301
215
302
216
/* The options we understand. */
304
218
{ .name = "global-options", .key = 'g',
305
219
.arg = "OPTION[,OPTION[,...]]",
306
220
.doc = "Options passed to all plugins" },
307
{ .name = "global-envs", .key = 'e',
308
.arg = "VAR=value",
309
.doc = "Environment variable passed to all plugins" },
310
221
{ .name = "options-for", .key = 'o',
311
222
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
312
223
.doc = "Options passed only to specified plugin" },
313
{ .name = "envs-for", .key = 'f',
314
.arg = "PLUGIN:ENV=value",
315
.doc = "Environment variable passed to specified plugin" },
316
224
{ .name = "disable", .key = 'd',
317
225
.arg = "PLUGIN",
318
226
.doc = "Disable a specific plugin", .group = 1 },
319
227
{ .name = "plugin-dir", .key = 128,
320
228
.arg = "DIRECTORY",
321
229
.doc = "Specify a different plugin directory", .group = 2 },
322
{ .name = "config-file", .key = 129,
323
.arg = "FILE",
324
.doc = "Specify a different configuration file", .group = 2 },
325
{ .name = "userid", .key = 130,
326
.arg = "ID", .flags = 0,
327
.doc = "User ID the plugins will run as", .group = 3 },
328
{ .name = "groupid", .key = 131,
329
.arg = "ID", .flags = 0,
330
.doc = "Group ID the plugins will run as", .group = 3 },
331
{ .name = "debug", .key = 132,
332
.doc = "Debug mode", .group = 4 },
230
{ .name = "userid", .key = 129,
231
.arg = "ID", .flags = 0,
232
.doc = "User ID the plugins will run as", .group = 2 },
233
{ .name = "groupid", .key = 130,
234
.arg = "ID", .flags = 0,
235
.doc = "Group ID the plugins will run as", .group = 2 },
236
{ .name = "debug", .key = 131,
237
.doc = "Debug mode", .group = 3 },
333
238
{ .name = NULL }
334
239
};
335
240
340
245
switch (key) {
341
246
case 'g':
342
247
if (arg != NULL){
343
char *p;
344
while((p = strsep(&arg, ",")) != NULL){
345
if(p[0] == '\0'){
346
continue;
347
}
348
if(not add_argument(getplugin(NULL, plugins), p)){
349
perror("add_argument");
350
return ARGP_ERR_UNKNOWN;
351
}
352
}
353
}
354
break;
355
case 'e':
356
if(arg == NULL){
357
break;
358
}
359
{
360
char *envdef = strdup(arg);
361
if(envdef == NULL){
362
break;
363
}
364
if(not add_environment(getplugin(NULL, plugins), envdef)){
365
perror("add_environment");
366
}
248
char *p = strtok(arg, ",");
249
do{
250
addargument(getplugin(NULL, plugins), p);
251
p = strtok(NULL, ",");
252
} while (p != NULL);
367
253
}
368
254
break;
369
255
case 'o':
370
256
if (arg != NULL){
371
char *p_name = strsep(&arg, ":");
372
if(p_name[0] == '\0'){
373
break;
374
}
375
char *opt = strsep(&arg, ":");
376
if(opt[0] == '\0'){
377
break;
378
}
379
if(opt != NULL){
380
char *p;
381
while((p = strsep(&opt, ",")) != NULL){
382
if(p[0] == '\0'){
383
continue;
384
}
385
if(not add_argument(getplugin(p_name, plugins), p)){
386
perror("add_argument");
387
return ARGP_ERR_UNKNOWN;
388
}
389
}
390
}
391
}
392
break;
393
case 'f':
394
if(arg == NULL){
395
break;
396
}
397
{
398
char *envdef = strchr(arg, ':');
399
if(envdef == NULL){
400
break;
401
}
402
char *p_name = strndup(arg, (size_t) (envdef-arg));
403
if(p_name == NULL){
404
break;
405
}
406
envdef++;
407
if(not add_environment(getplugin(p_name, plugins), envdef)){
408
perror("add_environment");
257
char *name = strtok(arg, ":");
258
char *p = strtok(NULL, ":");
259
if(p != NULL){
260
p = strtok(p, ",");
261
do{
262
addargument(getplugin(name, plugins), p);
263
p = strtok(NULL, ",");
264
} while (p != NULL);
409
265
}
410
266
}
411
267
break;
412
268
case 'd':
413
269
if (arg != NULL){
414
plugin *p = getplugin(arg, plugins);
415
if(p == NULL){
416
return ARGP_ERR_UNKNOWN;
417
}
418
p->disabled = true;
270
getplugin(arg, plugins)->disabled = true;
419
271
}
420
272
break;
421
273
case 128:
422
plugindir = strdup(arg);
423
if(plugindir == NULL){
424
perror("strdup");
425
}
274
plugindir = arg;
426
275
break;
427
276
case 129:
428
argfile = strdup(arg);
429
if(argfile == NULL){
430
perror("strdup");
431
}
432
break;
277
uid = (uid_t)strtol(arg, NULL, 10);
278
break;
433
279
case 130:
434
uid = (uid_t)strtol(arg, NULL, 10);
280
gid = (gid_t)strtol(arg, NULL, 10);
435
281
break;
436
282
case 131:
437
gid = (gid_t)strtol(arg, NULL, 10);
438
break;
439
case 132:
440
283
debug = true;
441
284
break;
442
285
case ARGP_KEY_ARG:
443
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
286
if(plus_options != NULL or arg == NULL or arg[0] != '+'){
287
argp_usage (state);
288
}
289
plus_options = arg;
444
290
break;
445
291
case ARGP_KEY_END:
446
292
break;
458
304
459
305
ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);
460
306
if (ret == ARGP_ERR_UNKNOWN){
461
fprintf(stderr, "Unknown error while parsing arguments\n");
307
fprintf(stderr, "Unkown error while parsing arguments\n");
462
308
exitstatus = EXIT_FAILURE;
463
goto fallback;
464
}
465
466
if (argfile == NULL){
467
conffp = fopen(AFILE, "r");
468
} else {
469
conffp = fopen(argfile, "r");
309
goto end;
470
310
}
471
311
472
if(conffp != NULL){
473
char *org_line = NULL;
474
char *p, *arg, *new_arg, *line;
475
size_t size = 0;
476
ssize_t sret;
477
const char whitespace_delims[] = " \r\t\f\v\n";
478
const char comment_delim[] = "#";
479
480
custom_argc = 1;
481
custom_argv = malloc(sizeof(char*) * 2);
482
if(custom_argv == NULL){
312
if(plus_options){
313
/* This is a mangled argument in the form of
314
"+--option+--other-option=parameter+--yet-another-option", etc */
315
/* Make new argc and argv vars, and call argp_parse() again. */
316
plus_options++; /* skip the first '+' character */
317
const char delims[] = "+";
318
char *arg;
319
int new_argc = 1;
320
plus_argv = malloc(sizeof(char*) * 2);
321
if(plus_argv == NULL){
483
322
perror("malloc");
484
323
exitstatus = EXIT_FAILURE;
485
goto fallback;
486
}
487
custom_argv[0] = argv[0];
488
custom_argv[1] = NULL;
489
490
while(true){
491
sret = getline(&org_line, &size, conffp);
492
if(sret == -1){
493
break;
494
}
495
496
line = org_line;
497
arg = strsep(&line, comment_delim);
498
while((p = strsep(&arg, whitespace_delims)) != NULL){
499
if(p[0] == '\0'){
500
continue;
501
}
502
new_arg = strdup(p);
503
if(new_arg == NULL){
504
perror("strdup");
505
exitstatus = EXIT_FAILURE;
506
free(org_line);
507
goto fallback;
508
}
509
510
custom_argc += 1;
511
custom_argv = realloc(custom_argv, sizeof(char *)
512
* ((unsigned int) custom_argc + 1));
513
if(custom_argv == NULL){
514
perror("realloc");
515
exitstatus = EXIT_FAILURE;
516
free(org_line);
517
goto fallback;
518
}
519
custom_argv[custom_argc-1] = new_arg;
520
custom_argv[custom_argc] = NULL;
521
}
522
}
523
free(org_line);
524
} else{
525
/* Check for harmful errors and go to fallback. Other errors might
526
not affect opening plugins */
527
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
528
perror("fopen");
529
exitstatus = EXIT_FAILURE;
530
goto fallback;
531
}
532
}
533
534
if(custom_argv != NULL){
535
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);
324
goto end;
325
}
326
plus_argv[0] = argv[0];
327
plus_argv[1] = NULL;
328
arg = strtok(plus_options, delims); /* Get first argument */
329
while(arg != NULL){
330
new_argc++;
331
plus_argv = realloc(plus_argv, sizeof(char *)
332
* ((unsigned int) new_argc + 1));
333
if(plus_argv == NULL){
334
perror("realloc");
335
exitstatus = EXIT_FAILURE;
336
goto end;
337
}
338
plus_argv[new_argc-1] = arg;
339
plus_argv[new_argc] = NULL;
340
arg = strtok(NULL, delims); /* Get next argument */
341
}
342
ret = argp_parse (&argp, new_argc, plus_argv, 0, 0, &plugin_list);
536
343
if (ret == ARGP_ERR_UNKNOWN){
537
fprintf(stderr, "Unknown error while parsing arguments\n");
344
fprintf(stderr, "Unkown error while parsing arguments\n");
538
345
exitstatus = EXIT_FAILURE;
539
goto fallback;
346
goto end;
540
347
}
541
348
}
542
349
547
354
for(char **a = p->argv; *a != NULL; a++){
548
355
fprintf(stderr, "\tArg: %s\n", *a);
549
356
}
550
fprintf(stderr, "...and %u environment variables\n", p->envc);
551
for(char **a = p->environ; *a != NULL; a++){
552
fprintf(stderr, "\t%s\n", *a);
553
}
554
357
}
555
358
}
556
359
563
366
if (ret == -1){
564
367
perror("setgid");
565
368
}
566
567
if (plugindir == NULL){
568
dir = opendir(PDIR);
569
} else {
570
dir = opendir(plugindir);
571
}
572
369
370
dir = opendir(plugindir);
573
371
if(dir == NULL){
574
372
perror("Could not open plugin dir");
575
373
exitstatus = EXIT_FAILURE;
576
goto fallback;
374
goto end;
577
375
}
578
376
579
377
/* Set the FD_CLOEXEC flag on the directory, if possible */
584
382
if(ret < 0){
585
383
perror("set_cloexec_flag");
586
384
exitstatus = EXIT_FAILURE;
587
goto fallback;
385
goto end;
588
386
}
589
387
}
590
388
}
599
397
if (errno == EBADF){
600
398
perror("readdir");
601
399
exitstatus = EXIT_FAILURE;
602
goto fallback;
400
goto end;
603
401
}
604
402
break;
605
403
}
650
448
continue;
651
449
}
652
450
}
653
654
char *filename;
655
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
656
if(ret < 0){
657
perror("asprintf");
658
continue;
451
452
char *filename = malloc(d_name_len + strlen(plugindir) + 2);
453
if (filename == NULL){
454
perror("malloc");
455
exitstatus = EXIT_FAILURE;
456
goto end;
659
457
}
458
strcpy(filename, plugindir); /* Spurious warning */
459
strcat(filename, "/"); /* Spurious warning */
460
strcat(filename, dirst->d_name); /* Spurious warning */
660
461
661
462
ret = stat(filename, &st);
662
463
if (ret == -1){
663
464
perror("stat");
664
free(filename);
665
continue;
465
exitstatus = EXIT_FAILURE;
466
goto end;
666
467
}
667
468
668
469
if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
673
474
free(filename);
674
475
continue;
675
476
}
676
plugin *p = getplugin(dirst->d_name, &plugin_list);
677
if(p == NULL){
678
perror("getplugin");
679
free(filename);
680
continue;
681
}
682
if(p->disabled){
477
if(getplugin(dirst->d_name, &plugin_list)->disabled){
683
478
if(debug){
684
479
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
685
480
dirst->d_name);
687
482
free(filename);
688
483
continue;
689
484
}
485
plugin *p = getplugin(dirst->d_name, &plugin_list);
690
486
{
691
487
/* Add global arguments to argument list for this plugin */
692
488
plugin *g = getplugin(NULL, &plugin_list);
693
if(g != NULL){
694
for(char **a = g->argv + 1; *a != NULL; a++){
695
if(not add_argument(p, *a)){
696
perror("add_argument");
697
}
698
}
699
/* Add global environment variables */
700
for(char **e = g->environ; *e != NULL; e++){
701
if(not add_environment(p, *e)){
702
perror("add_environment");
703
}
704
}
705
}
706
}
707
/* If this plugin has any environment variables, we will call
708
using execve and need to duplicate the environment from this
709
process, too. */
710
if(p->environ[0] != NULL){
711
for(char **e = environ; *e != NULL; e++){
712
char *copy = strdup(*e);
713
if(copy == NULL){
714
perror("strdup");
715
continue;
716
}
717
if(not add_environment(p, copy)){
718
perror("add_environment");
719
}
720
}
721
}
722
723
int pipefd[2];
489
for(char **a = g->argv + 1; *a != NULL; a++){
490
addargument(p, *a);
491
}
492
}
493
int pipefd[2];
724
494
ret = pipe(pipefd);
725
495
if (ret == -1){
726
496
perror("pipe");
727
497
exitstatus = EXIT_FAILURE;
728
goto fallback;
498
goto end;
729
499
}
730
500
ret = set_cloexec_flag(pipefd[0]);
731
501
if(ret < 0){
732
502
perror("set_cloexec_flag");
733
503
exitstatus = EXIT_FAILURE;
734
goto fallback;
504
goto end;
735
505
}
736
506
ret = set_cloexec_flag(pipefd[1]);
737
507
if(ret < 0){
738
508
perror("set_cloexec_flag");
739
509
exitstatus = EXIT_FAILURE;
740
goto fallback;
510
goto end;
741
511
}
742
512
/* Block SIGCHLD until process is safely in process list */
743
513
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
744
514
if(ret < 0){
745
515
perror("sigprocmask");
746
516
exitstatus = EXIT_FAILURE;
747
goto fallback;
517
goto end;
748
518
}
749
519
// Starting a new process to be watched
750
520
pid_t pid = fork();
751
if(pid == -1){
752
perror("fork");
753
exitstatus = EXIT_FAILURE;
754
goto fallback;
755
}
756
521
if(pid == 0){
757
522
/* this is the child process */
758
523
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
777
542
above and must now close it manually here. */
778
543
closedir(dir);
779
544
}
780
if(p->environ[0] == NULL){
781
if(execv(filename, p->argv) < 0){
782
perror("execv");
783
_exit(EXIT_FAILURE);
784
}
785
} else {
786
if(execve(filename, p->argv, p->environ) < 0){
787
perror("execve");
788
_exit(EXIT_FAILURE);
789
}
545
if(execv(filename, p->argv) < 0){
546
perror("execv");
547
_exit(EXIT_FAILURE);
790
548
}
791
549
/* no return */
792
550
}
801
559
perror("sigprocmask");
802
560
}
803
561
exitstatus = EXIT_FAILURE;
804
goto fallback;
562
goto end;
805
563
}
806
564
807
565
*new_process = (struct process){ .pid = pid,
815
573
if(ret < 0){
816
574
perror("sigprocmask");
817
575
exitstatus = EXIT_FAILURE;
818
goto fallback;
576
goto end;
819
577
}
820
578
821
579
FD_SET(new_process->fd, &rfds_all);
825
583
}
826
584
827
585
}
828
829
free_plugin_list(plugin_list);
830
plugin_list = NULL;
586
587
/* Free the plugin list */
588
for(plugin *next; plugin_list != NULL; plugin_list = next){
589
next = plugin_list->next;
590
free(plugin_list->argv);
591
free(plugin_list);
592
}
831
593
832
594
closedir(dir);
833
595
dir = NULL;
843
605
if (select_ret == -1){
844
606
perror("select");
845
607
exitstatus = EXIT_FAILURE;
846
goto fallback;
608
goto end;
847
609
}
848
610
/* OK, now either a process completed, or something can be read
849
611
from one of them */
871
633
/* Remove the plugin */
872
634
FD_CLR(proc->fd, &rfds_all);
873
635
/* Block signal while modifying process_list */
874
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
636
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
875
637
if(ret < 0){
876
638
perror("sigprocmask");
877
639
exitstatus = EXIT_FAILURE;
878
goto fallback;
640
goto end;
879
641
}
880
642
/* Delete this process entry from the list */
881
643
if(process_list == proc){
905
667
}
906
668
/* This process exited nicely, so print its buffer */
907
669
908
bool bret = print_out_password(proc->buffer,
909
proc->buffer_length);
670
bool bret = print_out_password(proc->buffer, proc->buffer_length);
910
671
if(not bret){
911
672
perror("print_out_password");
912
673
exitstatus = EXIT_FAILURE;
913
674
}
914
goto fallback;
675
goto end;
915
676
}
916
677
/* This process has not completed. Does it have any output? */
917
678
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
925
686
if (proc->buffer == NULL){
926
687
perror("malloc");
927
688
exitstatus = EXIT_FAILURE;
928
goto fallback;
689
goto end;
929
690
}
930
691
proc->buffer_size += BUFFER_SIZE;
931
692
}
944
705
}
945
706
}
946
707
}
947
948
949
fallback:
950
708
951
if(process_list == NULL or exitstatus != EXIT_SUCCESS){
952
/* Fallback if all plugins failed, none are found or an error
953
occured */
709
if(process_list == NULL){
954
710
bool bret;
955
711
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
956
712
char *passwordbuffer = getpass("Password: ");
958
714
if(not bret){
959
715
perror("print_out_password");
960
716
exitstatus = EXIT_FAILURE;
717
goto end;
718
}
719
bret = print_out_password("\n", 1);
720
if(not bret){
721
perror("print_out_password");
722
exitstatus = EXIT_FAILURE;
961
723
}
962
724
}
725
726
end:
963
727
964
728
/* Restore old signal handler */
965
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
966
if(ret == -1){
967
perror("sigaction");
968
exitstatus = EXIT_FAILURE;
969
}
970
971
if(custom_argv != NULL){
972
for(char **arg = custom_argv+1; *arg != NULL; arg++){
973
free(*arg);
974
}
975
free(custom_argv);
976
}
977
free_plugin_list(plugin_list);
729
sigaction(SIGCHLD, &old_sigchld_action, NULL);
730
731
free(plus_argv);
732
733
/* Free the plugin list */
734
for(plugin *next; plugin_list != NULL; plugin_list = next){
735
next = plugin_list->next;
736
free(plugin_list->argv);
737
free(plugin_list);
738
}
978
739
979
740
if(dir != NULL){
980
741
closedir(dir);
1000
761
if(errno != ECHILD){
1001
762
perror("wait");
1002
763
}
1003
1004
free(plugindir);
1005
free(argfile);
1006
764
1007
765
return exitstatus;
1008
766
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0