97
97
static plugin *plugin_list = NULL;
99
/* Gets a existing plugin based on name,
99
/* Gets an existing plugin based on name,
100
100
or if none is found, creates a new one */
101
101
static plugin *getplugin(char *name){
102
102
/* Check for exiting plugin with that name */
181
181
/* Add to a plugin's environment */
182
static bool add_environment(plugin *p, const char *def){
182
static bool add_environment(plugin *p, const char *def, bool replace){
186
/* namelen = length of name of environment variable */
187
size_t namelen = (size_t)(strchrnul(def, '=') - def);
188
/* Search for this environment variable */
189
for(char **e = p->environ; *e != NULL; e++){
190
if(strncmp(*e, def, namelen + 1) == 0){
191
/* It already exists */
193
char *new = realloc(*e, strlen(def) + 1);
186
203
return add_to_char_array(def, &(p->environ), &(p->envc));
238
255
/* Prints out a password to stdout */
239
256
bool print_out_password(const char *buffer, size_t length){
241
if(length>0 and buffer[length-1] == '\n'){
244
258
for(size_t written = 0; written < length; written += (size_t)ret){
245
259
ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
246
260
length - written));
327
341
{ .name = "global-options", .key = 'g',
328
342
.arg = "OPTION[,OPTION[,...]]",
329
343
.doc = "Options passed to all plugins" },
330
{ .name = "global-envs", .key = 'e',
344
{ .name = "global-env", .key = 'G',
331
345
.arg = "VAR=value",
332
346
.doc = "Environment variable passed to all plugins" },
333
347
{ .name = "options-for", .key = 'o',
334
348
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
335
349
.doc = "Options passed only to specified plugin" },
336
{ .name = "envs-for", .key = 'f',
350
{ .name = "env-for", .key = 'E',
337
351
.arg = "PLUGIN:ENV=value",
338
352
.doc = "Environment variable passed to specified plugin" },
339
353
{ .name = "disable", .key = 'd',
341
355
.doc = "Disable a specific plugin", .group = 1 },
356
{ .name = "enable", .key = 'e',
358
.doc = "Enable a specific plugin", .group = 1 },
342
359
{ .name = "plugin-dir", .key = 128,
343
360
.arg = "DIRECTORY",
344
361
.doc = "Specify a different plugin directory", .group = 2 },
359
error_t parse_opt (int key, char *arg, __attribute__((unused)) struct argp_state *state) {
360
/* Get the INPUT argument from `argp_parse', which we know is a
361
pointer to our plugin list pointer. */
376
error_t parse_opt (int key, char *arg, __attribute__((unused))
377
struct argp_state *state) {
363
379
case 'g': /* --global-options */
364
380
if (arg != NULL){
377
case 'e': /* --global-envs */
393
case 'G': /* --global-env */
382
char *envdef = strdup(arg);
386
if(not add_environment(getplugin(NULL), envdef)){
387
perror("add_environment");
397
if(not add_environment(getplugin(NULL), arg, true)){
398
perror("add_environment");
391
401
case 'o': /* --options-for */
392
402
if (arg != NULL){
393
403
char *p_name = strsep(&arg, ":");
394
if(p_name[0] == '\0'){
404
if(p_name[0] == '\0' or arg == NULL){
397
407
char *opt = strsep(&arg, ":");
408
if(opt[0] == '\0' or opt == NULL){
403
while((p = strsep(&opt, ",")) != NULL){
407
if(not add_argument(getplugin(p_name), p)){
408
perror("add_argument");
409
return ARGP_ERR_UNKNOWN;
412
while((p = strsep(&opt, ",")) != NULL){
416
if(not add_argument(getplugin(p_name), p)){
417
perror("add_argument");
418
return ARGP_ERR_UNKNOWN;
415
case 'f': /* --envs-for */
423
case 'E': /* --env-for */
421
429
if(envdef == NULL){
424
char *p_name = strndup(arg, (size_t) (envdef-arg));
429
if(not add_environment(getplugin(p_name), envdef)){
433
if(not add_environment(getplugin(arg), envdef+1, true)){
430
434
perror("add_environment");
440
444
p->disabled = true;
447
case 'e': /* --enable */
449
plugin *p = getplugin(arg);
451
return ARGP_ERR_UNKNOWN;
443
456
case 128: /* --plugin-dir */
444
458
plugindir = strdup(arg);
445
459
if(plugindir == NULL){
446
460
perror("strdup");
449
463
case 129: /* --config-file */
464
/* This is already done by parse_opt_config_file() */
466
case 130: /* --userid */
467
uid = (uid_t)strtol(arg, NULL, 10);
469
case 131: /* --groupid */
470
gid = (gid_t)strtol(arg, NULL, 10);
472
case 132: /* --debug */
476
/* Cryptsetup always passes an argument, which is an empty
477
string if "none" was specified in /etc/crypttab. So if
478
argument was empty, we ignore it silently. */
480
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
486
return ARGP_ERR_UNKNOWN;
491
/* This option parser is the same as parse_opt() above, except it
492
ignores everything but the --config-file option. */
493
error_t parse_opt_config_file (int key, char *arg,
494
__attribute__((unused))
495
struct argp_state *state) {
497
case 'g': /* --global-options */
498
case 'G': /* --global-env */
499
case 'o': /* --options-for */
500
case 'E': /* --env-for */
501
case 'd': /* --disable */
502
case 'e': /* --enable */
503
case 128: /* --plugin-dir */
505
case 129: /* --config-file */
450
507
argfile = strdup(arg);
451
508
if(argfile == NULL){
452
509
perror("strdup");
455
512
case 130: /* --userid */
456
uid = (uid_t)strtol(arg, NULL, 10);
458
513
case 131: /* --groupid */
459
gid = (gid_t)strtol(arg, NULL, 10);
461
514
case 132: /* --debug */
464
515
case ARGP_KEY_ARG:
465
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
467
516
case ARGP_KEY_END:
475
struct argp argp = { .options = options, .parser = parse_opt,
476
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
524
struct argp argp = { .options = options,
525
.parser = parse_opt_config_file,
477
527
.doc = "Mandos plugin runner -- Run plugins" };
479
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
529
/* Parse using the parse_opt_config_file in order to get the custom
530
config file location, if any. */
531
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
480
532
if (ret == ARGP_ERR_UNKNOWN){
481
533
fprintf(stderr, "Unknown error while parsing arguments\n");
482
534
exitstatus = EXIT_FAILURE;
486
/* Opens the configfile if aviable */
538
/* Reset to the normal argument parser */
539
argp.parser = parse_opt;
541
/* Open the configfile if available */
487
542
if (argfile == NULL){
488
543
conffp = fopen(AFILE, "r");
507
562
custom_argv[0] = argv[0];
508
563
custom_argv[1] = NULL;
510
/* for each line in the config file, strip whitespace and ignore commented text */
565
/* for each line in the config file, strip whitespace and ignore
512
568
sret = getline(&org_line, &size, conffp);
554
610
/* If there was any arguments from configuration file,
555
611
pass them to parser as command arguments */
556
612
if(custom_argv != NULL){
557
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, NULL);
613
ret = argp_parse (&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
558
615
if (ret == ARGP_ERR_UNKNOWN){
559
616
fprintf(stderr, "Unknown error while parsing arguments\n");
560
617
exitstatus = EXIT_FAILURE;
622
/* Parse actual command line arguments, to let them override the
624
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
625
if (ret == ARGP_ERR_UNKNOWN){
626
fprintf(stderr, "Unknown error while parsing arguments\n");
627
exitstatus = EXIT_FAILURE;
566
632
for(plugin *p = plugin_list; p != NULL; p=p->next){
567
633
fprintf(stderr, "Plugin: %s has %d arguments\n",
676
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
742
if(plugindir == NULL){
743
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
745
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
678
748
perror("asprintf");
722
792
/* Add global environment variables */
723
793
for(char **e = g->environ; *e != NULL; e++){
724
if(not add_environment(p, *e)){
794
if(not add_environment(p, *e, false)){
725
795
perror("add_environment");
733
803
if(p->environ[0] != NULL){
734
804
for(char **e = environ; *e != NULL; e++){
735
char *copy = strdup(*e);
740
if(not add_environment(p, copy)){
805
if(not add_environment(p, *e, false)){
741
806
perror("add_environment");
874
939
/* OK, now either a process completed, or something can be read
875
940
from one of them */
876
for(plugin *proc = plugin_list; proc != NULL; proc = proc->next){
941
for(plugin *proc = plugin_list; proc != NULL;){
877
942
/* Is this process completely done? */
878
943
if(proc->eof and proc->completed){
879
944
/* Only accept the plugin output if it exited cleanly */
906
971
exitstatus = EXIT_FAILURE;
910
975
/* We are done modifying process list, so unblock signal */
911
976
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
936
1005
/* This process has not completed. Does it have any output? */
937
1006
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
938
1007
/* This process had nothing to say at this time */
941
1011
/* Before reading, make the process' data buffer large enough */
975
1046
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
976
1047
char *passwordbuffer = getpass("Password: ");
977
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1048
size_t len = strlen(passwordbuffer);
1049
/* Strip trailing newline */
1050
if(len > 0 and passwordbuffer[len-1] == '\n'){
1051
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1054
bret = print_out_password(passwordbuffer, len);
979
1056
perror("print_out_password");
980
1057
exitstatus = EXIT_FAILURE;