95
97
static plugin *plugin_list = NULL;
97
/* Gets an existing plugin based on name,
99
/* Gets a existing plugin based on name,
98
100
or if none is found, creates a new one */
99
101
static plugin *getplugin(char *name){
100
102
/* Check for exiting plugin with that name */
179
181
/* Add to a plugin's environment */
180
static bool add_environment(plugin *p, const char *def, bool replace){
182
static bool add_environment(plugin *p, const char *def){
184
/* namelen = length of name of environment variable */
185
size_t namelen = (size_t)(strchrnul(def, '=') - def);
186
/* Search for this environment variable */
187
for(char **e = p->environ; *e != NULL; e++){
188
if(strncmp(*e, def, namelen + 1) == 0){
189
/* It already exists */
191
char *new = realloc(*e, strlen(def) + 1);
201
186
return add_to_char_array(def, &(p->environ), &(p->envc));
206
191
* Descriptor Flags".
207
192
* *Note File Descriptor Flags:(libc)Descriptor Flags.
209
static int set_cloexec_flag(int fd){
194
static int set_cloexec_flag(int fd)
210
196
int ret = fcntl(fd, F_GETFD, 0);
211
197
/* If reading the flags failed, return error indication now. */
252
238
/* Prints out a password to stdout */
253
static bool print_out_password(const char *buffer, size_t length){
239
bool print_out_password(const char *buffer, size_t length){
241
if(length>0 and buffer[length-1] == '\n'){
255
244
for(size_t written = 0; written < length; written += (size_t)ret){
256
245
ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
257
246
length - written));
338
327
{ .name = "global-options", .key = 'g',
339
328
.arg = "OPTION[,OPTION[,...]]",
340
329
.doc = "Options passed to all plugins" },
341
{ .name = "global-env", .key = 'G',
330
{ .name = "global-envs", .key = 'e',
342
331
.arg = "VAR=value",
343
332
.doc = "Environment variable passed to all plugins" },
344
333
{ .name = "options-for", .key = 'o',
345
334
.arg = "PLUGIN:OPTION[,OPTION[,...]]",
346
335
.doc = "Options passed only to specified plugin" },
347
{ .name = "env-for", .key = 'E',
336
{ .name = "envs-for", .key = 'f',
348
337
.arg = "PLUGIN:ENV=value",
349
338
.doc = "Environment variable passed to specified plugin" },
350
339
{ .name = "disable", .key = 'd',
352
341
.doc = "Disable a specific plugin", .group = 1 },
353
{ .name = "enable", .key = 'e',
355
.doc = "Enable a specific plugin", .group = 1 },
356
342
{ .name = "plugin-dir", .key = 128,
357
343
.arg = "DIRECTORY",
358
344
.doc = "Specify a different plugin directory", .group = 2 },
373
error_t parse_opt (int key, char *arg, __attribute__((unused))
374
struct argp_state *state) {
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
363
case 'g': /* --global-options */
377
364
if (arg != NULL){
390
case 'G': /* --global-env */
377
case 'e': /* --global-envs */
394
if(not add_environment(getplugin(NULL), arg, true)){
395
perror("add_environment");
382
char *envdef = strdup(arg);
386
if(not add_environment(getplugin(NULL), envdef)){
387
perror("add_environment");
398
391
case 'o': /* --options-for */
399
392
if (arg != NULL){
400
393
char *p_name = strsep(&arg, ":");
401
if(p_name[0] == '\0' or arg == NULL){
394
if(p_name[0] == '\0'){
404
397
char *opt = strsep(&arg, ":");
405
if(opt[0] == '\0' or opt == NULL){
409
while((p = strsep(&opt, ",")) != NULL){
413
if(not add_argument(getplugin(p_name), p)){
414
perror("add_argument");
415
return ARGP_ERR_UNKNOWN;
403
while((p = strsep(&opt, ",")) != NULL){
407
if(not add_argument(getplugin(p_name), p)){
408
perror("add_argument");
409
return ARGP_ERR_UNKNOWN;
420
case 'E': /* --env-for */
415
case 'f': /* --envs-for */
426
421
if(envdef == NULL){
430
if(not add_environment(getplugin(arg), envdef+1, true)){
424
char *p_name = strndup(arg, (size_t) (envdef-arg));
429
if(not add_environment(getplugin(p_name), envdef)){
431
430
perror("add_environment");
441
440
p->disabled = true;
444
case 'e': /* --enable */
446
plugin *p = getplugin(arg);
448
return ARGP_ERR_UNKNOWN;
453
443
case 128: /* --plugin-dir */
455
444
plugindir = strdup(arg);
456
445
if(plugindir == NULL){
457
446
perror("strdup");
460
449
case 129: /* --config-file */
461
/* This is already done by parse_opt_config_file() */
450
argfile = strdup(arg);
463
455
case 130: /* --userid */
464
456
uid = (uid_t)strtol(arg, NULL, 10);
472
464
case ARGP_KEY_ARG:
473
/* Cryptsetup always passes an argument, which is an empty
474
string if "none" was specified in /etc/crypttab. So if
475
argument was empty, we ignore it silently. */
477
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
483
return ARGP_ERR_UNKNOWN;
488
/* This option parser is the same as parse_opt() above, except it
489
ignores everything but the --config-file option. */
490
error_t parse_opt_config_file (int key, char *arg,
491
__attribute__((unused))
492
struct argp_state *state) {
494
case 'g': /* --global-options */
495
case 'G': /* --global-env */
496
case 'o': /* --options-for */
497
case 'E': /* --env-for */
498
case 'd': /* --disable */
499
case 'e': /* --enable */
500
case 128: /* --plugin-dir */
502
case 129: /* --config-file */
504
argfile = strdup(arg);
509
case 130: /* --userid */
510
case 131: /* --groupid */
511
case 132: /* --debug */
516
return ARGP_ERR_UNKNOWN;
521
struct argp argp = { .options = options,
522
.parser = parse_opt_config_file,
465
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
470
return ARGP_ERR_UNKNOWN;
475
struct argp argp = { .options = options, .parser = parse_opt,
476
.args_doc = "[+PLUS_SEPARATED_OPTIONS]",
524
477
.doc = "Mandos plugin runner -- Run plugins" };
526
/* Parse using the parse_opt_config_file in order to get the custom
527
config file location, if any. */
528
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
479
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
529
480
if (ret == ARGP_ERR_UNKNOWN){
530
481
fprintf(stderr, "Unknown error while parsing arguments\n");
531
482
exitstatus = EXIT_FAILURE;
535
/* Reset to the normal argument parser */
536
argp.parser = parse_opt;
538
/* Open the configfile if available */
486
/* Opens the configfile if aviable */
539
487
if (argfile == NULL){
540
488
conffp = fopen(AFILE, "r");
559
507
custom_argv[0] = argv[0];
560
508
custom_argv[1] = NULL;
562
/* for each line in the config file, strip whitespace and ignore
510
/* for each line in the config file, strip whitespace and ignore commented text */
565
512
sret = getline(&org_line, &size, conffp);
607
554
/* If there was any arguments from configuration file,
608
555
pass them to parser as command arguments */
609
556
if(custom_argv != NULL){
610
ret = argp_parse (&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
557
ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, NULL);
612
558
if (ret == ARGP_ERR_UNKNOWN){
613
559
fprintf(stderr, "Unknown error while parsing arguments\n");
614
560
exitstatus = EXIT_FAILURE;
619
/* Parse actual command line arguments, to let them override the
621
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
622
if (ret == ARGP_ERR_UNKNOWN){
623
fprintf(stderr, "Unknown error while parsing arguments\n");
624
exitstatus = EXIT_FAILURE;
629
566
for(plugin *p = plugin_list; p != NULL; p=p->next){
630
567
fprintf(stderr, "Plugin: %s has %d arguments\n",
739
if(plugindir == NULL){
740
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
742
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
676
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
745
678
perror("asprintf");
789
722
/* Add global environment variables */
790
723
for(char **e = g->environ; *e != NULL; e++){
791
if(not add_environment(p, *e, false)){
724
if(not add_environment(p, *e)){
792
725
perror("add_environment");
800
733
if(p->environ[0] != NULL){
801
734
for(char **e = environ; *e != NULL; e++){
802
if(not add_environment(p, *e, false)){
735
char *copy = strdup(*e);
740
if(not add_environment(p, copy)){
803
741
perror("add_environment");
936
874
/* OK, now either a process completed, or something can be read
937
875
from one of them */
938
for(plugin *proc = plugin_list; proc != NULL;){
876
for(plugin *proc = plugin_list; proc != NULL; proc = proc->next){
939
877
/* Is this process completely done? */
940
878
if(proc->eof and proc->completed){
941
879
/* Only accept the plugin output if it exited cleanly */
1043
975
fprintf(stderr, "Going to fallback mode using getpass(3)\n");
1044
976
char *passwordbuffer = getpass("Password: ");
1045
size_t len = strlen(passwordbuffer);
1046
/* Strip trailing newline */
1047
if(len > 0 and passwordbuffer[len-1] == '\n'){
1048
passwordbuffer[len-1] = '\0'; /* not strictly necessary */
1051
bret = print_out_password(passwordbuffer, len);
977
bret = print_out_password(passwordbuffer, strlen(passwordbuffer));
1053
979
perror("print_out_password");
1054
980
exitstatus = EXIT_FAILURE;