25
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
asprintf(), O_CLOEXEC */
27
27
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
EXIT_SUCCESS, realloc() */
30
30
#include <stdbool.h> /* bool, true, false */
31
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, fdopendir(), stat(), struct
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
34
34
stat, waitpid(), WIFEXITED(),
35
35
WEXITSTATUS(), wait(), pid_t,
36
36
uid_t, gid_t, getuid(), getgid(),
402
394
.doc = "Group ID the plugins will run as", .group = 3 },
403
395
{ .name = "debug", .key = 132,
404
396
.doc = "Debug mode", .group = 4 },
406
* These reproduce what we would get without ARGP_NO_HELP
408
{ .name = "help", .key = '?',
409
.doc = "Give this help list", .group = -1 },
410
{ .name = "usage", .key = -3,
411
.doc = "Give a short usage message", .group = -1 },
412
{ .name = "version", .key = 'V',
413
.doc = "Print program version", .group = -1 },
417
error_t parse_opt(int key, char *arg, struct argp_state *state){
400
error_t parse_opt(int key, char *arg, __attribute__((unused))
401
struct argp_state *state){
422
405
case 'g': /* --global-options */
424
407
char *plugin_option;
425
408
while((plugin_option = strsep(&arg, ",")) != NULL){
409
if(plugin_option[0] == '\0'){
426
412
if(not add_argument(getplugin(NULL), plugin_option)){
413
perror("add_argument");
414
return ARGP_ERR_UNKNOWN;
432
419
case 'G': /* --global-env */
433
add_environment(getplugin(NULL), arg, true);
423
if(not add_environment(getplugin(NULL), arg, true)){
424
perror("add_environment");
435
427
case 'o': /* --options-for */
437
char *option_list = strchr(arg, ':');
438
if(option_list == NULL){
439
argp_error(state, "No colon in \"%s\"", arg);
446
argp_error(state, "Empty plugin name");
451
while((option = strsep(&option_list, ",")) != NULL){
452
if(not add_argument(getplugin(arg), option)){
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;
458
442
case 'E': /* --env-for */
460
447
char *envdef = strchr(arg, ':');
461
448
if(envdef == NULL){
462
argp_error(state, "No colon in \"%s\"", arg);
469
argp_error(state, "Empty plugin name");
452
if(not add_environment(getplugin(arg), envdef+1, true)){
453
perror("add_environment");
473
add_environment(getplugin(arg), envdef, true);
476
457
case 'd': /* --disable */
478
459
plugin *p = getplugin(arg);
461
return ARGP_ERR_UNKNOWN;
484
466
case 'e': /* --enable */
486
468
plugin *p = getplugin(arg);
470
return ARGP_ERR_UNKNOWN;
492
475
case 128: /* --plugin-dir */
494
477
plugindir = strdup(arg);
478
if(plugindir == NULL){
496
482
case 129: /* --config-file */
497
483
/* This is already done by parse_opt_config_file() */
499
485
case 130: /* --userid */
500
487
tmpmax = strtoimax(arg, &tmp, 10);
501
488
if(errno != 0 or tmp == arg or *tmp != '\0'
502
489
or tmpmax != (uid_t)tmpmax){
503
argp_error(state, "Bad user ID number: \"%s\", using %"
504
PRIdMAX, arg, (intmax_t)uid);
490
fprintf(stderr, "Bad user ID number: \"%s\", using %"
491
PRIdMAX "\n", arg, (intmax_t)uid);
509
496
case 131: /* --groupid */
510
498
tmpmax = strtoimax(arg, &tmp, 10);
511
499
if(errno != 0 or tmp == arg or *tmp != '\0'
512
500
or tmpmax != (gid_t)tmpmax){
513
argp_error(state, "Bad group ID number: \"%s\", using %"
514
PRIdMAX, arg, (intmax_t)gid);
501
fprintf(stderr, "Bad group ID number: \"%s\", using %"
502
PRIdMAX "\n", arg, (intmax_t)gid);
519
507
case 132: /* --debug */
523
* These reproduce what we would get without ARGP_NO_HELP
525
case '?': /* --help */
526
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
527
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
528
case -3: /* --usage */
529
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
530
argp_state_help(state, state->out_stream,
531
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
532
case 'V': /* --version */
533
fprintf(state->out_stream, "%s\n", argp_program_version);
537
511
* When adding more options before this line, remember to also add a
538
512
* "case" to the "parse_opt_config_file" function below.
682
649
not affect opening plugins */
683
650
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
685
exitstatus = EX_IOERR;
652
exitstatus = EXIT_FAILURE;
689
/* If there were any arguments from the configuration file, pass
690
them to parser as command line arguments */
656
/* If there was any arguments from configuration file,
657
pass them to parser as command arguments */
691
658
if(custom_argv != NULL){
692
ret = argp_parse(&argp, custom_argc, custom_argv,
693
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
701
perror("argp_parse");
702
exitstatus = EX_OSERR;
705
exitstatus = EX_CONFIG;
659
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
661
if(ret == ARGP_ERR_UNKNOWN){
662
fprintf(stderr, "Unknown error while parsing arguments\n");
663
exitstatus = EXIT_FAILURE;
710
668
/* Parse actual command line arguments, to let them override the
712
ret = argp_parse(&argp, argc, argv,
713
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
721
perror("argp_parse");
722
exitstatus = EX_OSERR;
725
exitstatus = EX_USAGE;
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;
750
698
perror("setuid");
753
/* Open plugin directory with close_on_exec flag */
701
if(plugindir == NULL){
704
dir = opendir(plugindir);
708
perror("Could not open plugin dir");
709
exitstatus = EXIT_FAILURE;
713
/* Set the FD_CLOEXEC flag on the directory, if possible */
756
if(plugindir == NULL){
757
dir_fd = open(PDIR, O_RDONLY |
760
#else /* not O_CLOEXEC */
762
#endif /* not O_CLOEXEC */
765
dir_fd = open(plugindir, O_RDONLY |
768
#else /* not O_CLOEXEC */
770
#endif /* not O_CLOEXEC */
774
perror("Could not open plugin dir");
775
exitstatus = EX_UNAVAILABLE;
780
/* Set the FD_CLOEXEC flag on the directory */
781
ret = set_cloexec_flag(dir_fd);
783
perror("set_cloexec_flag");
784
TEMP_FAILURE_RETRY(close(dir_fd));
785
exitstatus = EX_OSERR;
788
#endif /* O_CLOEXEC */
790
dir = fdopendir(dir_fd);
792
perror("Could not open plugin dir");
793
TEMP_FAILURE_RETRY(close(dir_fd));
794
exitstatus = EX_OSERR;
715
int dir_fd = dirfd(dir);
717
ret = set_cloexec_flag(dir_fd);
719
perror("set_cloexec_flag");
720
exitstatus = EXIT_FAILURE;