173
254
* Helper function to insert pub and seckey to the engine keyring.
175
256
bool import_key(const char *filename){
177
259
gpgme_data_t pgp_data;
179
261
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
185
267
rc = gpgme_data_new_from_fd(&pgp_data, fd);
186
268
if(rc != GPG_ERR_NO_ERROR){
187
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
188
gpgme_strsource(rc), gpgme_strerror(rc));
269
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
270
gpgme_strsource(rc), gpgme_strerror(rc));
192
274
rc = gpgme_op_import(mc.ctx, pgp_data);
193
275
if(rc != GPG_ERR_NO_ERROR){
194
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
195
gpgme_strsource(rc), gpgme_strerror(rc));
276
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
277
gpgme_strsource(rc), gpgme_strerror(rc));
199
281
ret = (int)TEMP_FAILURE_RETRY(close(fd));
283
perror_plus("close");
203
285
gpgme_data_release(pgp_data);
208
fprintf(stderr, "Initializing GPGME\n");
290
fprintf_plus(stderr, "Initializing GPGME\n");
212
294
gpgme_check_version(NULL);
213
295
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
214
296
if(rc != GPG_ERR_NO_ERROR){
215
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
216
gpgme_strsource(rc), gpgme_strerror(rc));
297
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
298
gpgme_strsource(rc), gpgme_strerror(rc));
220
/* Set GPGME home directory for the OpenPGP engine only */
302
/* Set GPGME home directory for the OpenPGP engine only */
221
303
rc = gpgme_get_engine_info(&engine_info);
222
304
if(rc != GPG_ERR_NO_ERROR){
223
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
224
gpgme_strsource(rc), gpgme_strerror(rc));
305
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
306
gpgme_strsource(rc), gpgme_strerror(rc));
227
309
while(engine_info != NULL){
292
377
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
293
378
if(rc != GPG_ERR_NO_ERROR){
294
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
295
gpgme_strsource(rc), gpgme_strerror(rc));
379
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
380
gpgme_strsource(rc), gpgme_strerror(rc));
296
381
plaintext_length = -1;
298
383
gpgme_decrypt_result_t result;
299
384
result = gpgme_op_decrypt_result(mc.ctx);
300
385
if(result == NULL){
301
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
386
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
303
fprintf(stderr, "Unsupported algorithm: %s\n",
304
result->unsupported_algorithm);
305
fprintf(stderr, "Wrong key usage: %u\n",
306
result->wrong_key_usage);
388
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
389
result->unsupported_algorithm);
390
fprintf_plus(stderr, "Wrong key usage: %u\n",
391
result->wrong_key_usage);
307
392
if(result->file_name != NULL){
308
fprintf(stderr, "File name: %s\n", result->file_name);
393
fprintf_plus(stderr, "File name: %s\n", result->file_name);
310
395
gpgme_recipient_t recipient;
311
396
recipient = result->recipients;
312
397
while(recipient != NULL){
313
fprintf(stderr, "Public key algorithm: %s\n",
314
gpgme_pubkey_algo_name(recipient->pubkey_algo));
315
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
316
fprintf(stderr, "Secret key available: %s\n",
317
recipient->status == GPG_ERR_NO_SECKEY
398
fprintf_plus(stderr, "Public key algorithm: %s\n",
399
gpgme_pubkey_algo_name
400
(recipient->pubkey_algo));
401
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
402
fprintf_plus(stderr, "Secret key available: %s\n",
403
recipient->status == GPG_ERR_NO_SECKEY
319
405
recipient = recipient->next;
418
504
/* OpenPGP credentials */
419
gnutls_certificate_allocate_credentials(&mc.cred);
505
ret = gnutls_certificate_allocate_credentials(&mc.cred);
420
506
if(ret != GNUTLS_E_SUCCESS){
421
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
425
safer_gnutls_strerror(ret));
507
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
508
safer_gnutls_strerror(ret));
426
509
gnutls_global_deinit();
431
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
432
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
514
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
515
" secret key %s as GnuTLS credentials\n",
436
520
ret = gnutls_certificate_set_openpgp_key_file
437
521
(mc.cred, pubkeyfilename, seckeyfilename,
438
522
GNUTLS_OPENPGP_FMT_BASE64);
439
523
if(ret != GNUTLS_E_SUCCESS){
441
"Error[%d] while reading the OpenPGP key pair ('%s',"
442
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
443
fprintf(stderr, "The GnuTLS error is: %s\n",
444
safer_gnutls_strerror(ret));
525
"Error[%d] while reading the OpenPGP key pair ('%s',"
526
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
527
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
528
safer_gnutls_strerror(ret));
448
532
/* GnuTLS server initialization */
449
533
ret = gnutls_dh_params_init(&mc.dh_params);
450
534
if(ret != GNUTLS_E_SUCCESS){
451
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
452
" %s\n", safer_gnutls_strerror(ret));
535
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
536
" initialization: %s\n",
537
safer_gnutls_strerror(ret));
455
540
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
456
541
if(ret != GNUTLS_E_SUCCESS){
457
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
458
safer_gnutls_strerror(ret));
542
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
543
safer_gnutls_strerror(ret));
474
559
static int init_gnutls_session(gnutls_session_t *session){
476
561
/* GnuTLS session creation */
477
ret = gnutls_init(session, GNUTLS_SERVER);
563
ret = gnutls_init(session, GNUTLS_SERVER);
567
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
478
568
if(ret != GNUTLS_E_SUCCESS){
479
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
480
safer_gnutls_strerror(ret));
570
"Error in GnuTLS session initialization: %s\n",
571
safer_gnutls_strerror(ret));
485
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
577
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
579
gnutls_deinit(*session);
582
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
486
583
if(ret != GNUTLS_E_SUCCESS){
487
fprintf(stderr, "Syntax error at: %s\n", err);
488
fprintf(stderr, "GnuTLS error: %s\n",
489
safer_gnutls_strerror(ret));
584
fprintf_plus(stderr, "Syntax error at: %s\n", err);
585
fprintf_plus(stderr, "GnuTLS error: %s\n",
586
safer_gnutls_strerror(ret));
490
587
gnutls_deinit(*session);
495
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
593
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
596
gnutls_deinit(*session);
599
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
497
600
if(ret != GNUTLS_E_SUCCESS){
498
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
499
safer_gnutls_strerror(ret));
601
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
602
safer_gnutls_strerror(ret));
500
603
gnutls_deinit(*session);
504
607
/* ignore client certificate if any. */
505
gnutls_certificate_server_set_request(*session,
608
gnutls_certificate_server_set_request(*session, GNUTLS_CERT_IGNORE);
508
610
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
965
1108
signal_received = sig;
966
1109
int old_errno = errno;
1110
/* set main loop to exit */
967
1111
if(mc.simple_poll != NULL){
968
1112
avahi_simple_poll_quit(mc.simple_poll);
970
1114
errno = old_errno;
1117
bool get_flags(const char *ifname, struct ifreq *ifr){
1120
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1122
perror_plus("socket");
1125
strcpy(ifr->ifr_name, ifname);
1126
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1129
perror_plus("ioctl SIOCGIFFLAGS");
1136
bool good_flags(const char *ifname, const struct ifreq *ifr){
1138
/* Reject the loopback device */
1139
if(ifr->ifr_flags & IFF_LOOPBACK){
1141
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1146
/* Accept point-to-point devices only if connect_to is specified */
1147
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1149
fprintf_plus(stderr, "Accepting point-to-point interface"
1150
" \"%s\"\n", ifname);
1154
/* Otherwise, reject non-broadcast-capable devices */
1155
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1157
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1158
" \"%s\"\n", ifname);
1162
/* Reject non-ARP interfaces (including dummy interfaces) */
1163
if(ifr->ifr_flags & IFF_NOARP){
1165
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1171
/* Accept this device */
1173
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1179
* This function determines if a directory entry in /sys/class/net
1180
* corresponds to an acceptable network device.
1181
* (This function is passed to scandir(3) as a filter function.)
1183
int good_interface(const struct dirent *if_entry){
1184
if(if_entry->d_name[0] == '.'){
1189
if(not get_flags(if_entry->d_name, &ifr)){
1191
fprintf_plus(stderr, "Failed to get flags for interface "
1192
"\"%s\"\n", if_entry->d_name);
1197
if(not good_flags(if_entry->d_name, &ifr)){
1204
* This function determines if a directory entry in /sys/class/net
1205
* corresponds to an acceptable network device which is up.
1206
* (This function is passed to scandir(3) as a filter function.)
1208
int up_interface(const struct dirent *if_entry){
1209
if(if_entry->d_name[0] == '.'){
1214
if(not get_flags(if_entry->d_name, &ifr)){
1216
fprintf_plus(stderr, "Failed to get flags for interface "
1217
"\"%s\"\n", if_entry->d_name);
1222
/* Reject down interfaces */
1223
if(not (ifr.ifr_flags & IFF_UP)){
1225
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1231
/* Reject non-running interfaces */
1232
if(not (ifr.ifr_flags & IFF_RUNNING)){
1234
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1240
if(not good_flags(if_entry->d_name, &ifr)){
1246
int notdotentries(const struct dirent *direntry){
1247
/* Skip "." and ".." */
1248
if(direntry->d_name[0] == '.'
1249
and (direntry->d_name[1] == '\0'
1250
or (direntry->d_name[1] == '.'
1251
and direntry->d_name[2] == '\0'))){
1257
/* Is this directory entry a runnable program? */
1258
int runnable_hook(const struct dirent *direntry){
1263
if((direntry->d_name)[0] == '\0'){
1268
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1269
"abcdefghijklmnopqrstuvwxyz"
1272
if((direntry->d_name)[sret] != '\0'){
1273
/* Contains non-allowed characters */
1275
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1281
char *fullname = NULL;
1282
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1284
perror_plus("asprintf");
1288
ret = stat(fullname, &st);
1291
perror_plus("Could not stat hook");
1295
if(not (S_ISREG(st.st_mode))){
1296
/* Not a regular file */
1298
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1303
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1304
/* Not executable */
1306
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1312
fprintf_plus(stderr, "Hook \"%s\" is acceptable\n",
1318
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1320
struct timespec now;
1321
struct timespec waited_time;
1322
intmax_t block_time;
1325
if(mc.current_server == NULL){
1327
fprintf_plus(stderr, "Wait until first server is found."
1330
ret = avahi_simple_poll_iterate(s, -1);
1333
fprintf_plus(stderr, "Check current_server if we should run"
1336
/* the current time */
1337
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1339
perror_plus("clock_gettime");
1342
/* Calculating in ms how long time between now and server
1343
who we visted longest time ago. Now - last seen. */
1344
waited_time.tv_sec = (now.tv_sec
1345
- mc.current_server->last_seen.tv_sec);
1346
waited_time.tv_nsec = (now.tv_nsec
1347
- mc.current_server->last_seen.tv_nsec);
1348
/* total time is 10s/10,000ms.
1349
Converting to s from ms by dividing by 1,000,
1350
and ns to ms by dividing by 1,000,000. */
1351
block_time = ((retry_interval
1352
- ((intmax_t)waited_time.tv_sec * 1000))
1353
- ((intmax_t)waited_time.tv_nsec / 1000000));
1356
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1360
if(block_time <= 0){
1361
ret = start_mandos_communication(mc.current_server->ip,
1362
mc.current_server->port,
1363
mc.current_server->if_index,
1364
mc.current_server->af);
1366
avahi_simple_poll_quit(mc.simple_poll);
1369
ret = clock_gettime(CLOCK_MONOTONIC,
1370
&mc.current_server->last_seen);
1372
perror_plus("clock_gettime");
1375
mc.current_server = mc.current_server->next;
1376
block_time = 0; /* Call avahi to find new Mandos
1377
servers, but don't block */
1380
ret = avahi_simple_poll_iterate(s, (int)block_time);
1383
if (ret > 0 or errno != EINTR){
1384
return (ret != 1) ? ret : 0;
1390
bool run_network_hooks(const char *mode, const char *interface,
1392
struct dirent **direntries;
1393
struct dirent *direntry;
1395
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1398
perror_plus("scandir");
1400
int devnull = open("/dev/null", O_RDONLY);
1401
for(int i = 0; i < numhooks; i++){
1402
direntry = direntries[i];
1403
char *fullname = NULL;
1404
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1406
perror_plus("asprintf");
1410
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1413
pid_t hook_pid = fork();
1416
/* Raise privileges */
1420
perror_plus("seteuid");
1422
/* Raise privileges even more */
1426
perror_plus("setuid");
1432
perror_plus("setgid");
1434
/* Reset supplementary groups */
1436
ret = setgroups(0, NULL);
1438
perror_plus("setgroups");
1440
dup2(devnull, STDIN_FILENO);
1442
dup2(STDERR_FILENO, STDOUT_FILENO);
1443
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1445
perror_plus("setenv");
1448
ret = setenv("DEVICE", interface, 1);
1450
perror_plus("setenv");
1453
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1455
perror_plus("setenv");
1458
ret = setenv("MODE", mode, 1);
1460
perror_plus("setenv");
1464
ret = asprintf(&delaystring, "%f", delay);
1466
perror_plus("asprintf");
1469
ret = setenv("DELAY", delaystring, 1);
1472
perror_plus("setenv");
1476
if(connect_to != NULL){
1477
ret = setenv("CONNECT", connect_to);
1479
perror_plus("setenv");
1483
if(execl(fullname, direntry->d_name, mode, NULL) == -1){
1484
perror_plus("execl");
1485
_exit(EXIT_FAILURE);
1489
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1490
perror_plus("waitpid");
1494
if(WIFEXITED(status)){
1495
if(WEXITSTATUS(status) != 0){
1496
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1497
" with status %d\n", direntry->d_name,
1498
WEXITSTATUS(status));
1502
} else if(WIFSIGNALED(status)){
1503
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1504
" signal %d\n", direntry->d_name,
1509
fprintf_plus(stderr, "Warning: network hook \"%s\""
1510
" crashed\n", direntry->d_name);
1517
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
973
1526
int main(int argc, char *argv[]){
974
1527
AvahiSServiceBrowser *sb = NULL;
1070
1662
delay = strtof(arg, &tmp);
1071
1663
if(errno != 0 or tmp == arg or *tmp != '\0'){
1072
fprintf(stderr, "Bad delay\n");
1664
argp_error(state, "Bad delay");
1666
case 132: /* --retry */
1668
retry_interval = strtod(arg, &tmp);
1669
if(errno != 0 or tmp == arg or *tmp != '\0'
1670
or (retry_interval * 1000) > INT_MAX
1671
or retry_interval < 0){
1672
argp_error(state, "Bad retry interval");
1675
case 133: /* --network-hook-dir */
1679
* These reproduce what we would get without ARGP_NO_HELP
1681
case '?': /* --help */
1682
argp_state_help(state, state->out_stream,
1683
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
1684
& ~(unsigned int)ARGP_HELP_EXIT_OK);
1685
case -3: /* --usage */
1686
argp_state_help(state, state->out_stream,
1687
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1688
case 'V': /* --version */
1689
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1690
exit(argp_err_exit_status);
1081
1693
return ARGP_ERR_UNKNOWN;
1086
1698
struct argp argp = { .options = options, .parser = parse_opt,
1087
1699
.args_doc = "",
1088
1700
.doc = "Mandos client -- Get and decrypt"
1089
1701
" passwords from a Mandos server" };
1090
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1091
if(ret == ARGP_ERR_UNKNOWN){
1092
fprintf(stderr, "Unknown error while parsing arguments\n");
1093
exitcode = EXIT_FAILURE;
1702
ret = argp_parse(&argp, argc, argv,
1703
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
1710
perror_plus("argp_parse");
1711
exitcode = EX_OSERR;
1714
exitcode = EX_USAGE;
1720
/* Work around Debian bug #633582:
1721
<http://bugs.debian.org/633582> */
1723
/* Re-raise priviliges */
1727
perror_plus("seteuid");
1731
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1732
int seckey_fd = open(seckey, O_RDONLY);
1733
if(seckey_fd == -1){
1734
perror_plus("open");
1736
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1738
perror_plus("fstat");
1740
if(S_ISREG(st.st_mode)
1741
and st.st_uid == 0 and st.st_gid == 0){
1742
ret = fchown(seckey_fd, uid, gid);
1744
perror_plus("fchown");
1748
TEMP_FAILURE_RETRY(close(seckey_fd));
1752
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1753
int pubkey_fd = open(pubkey, O_RDONLY);
1754
if(pubkey_fd == -1){
1755
perror_plus("open");
1757
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1759
perror_plus("fstat");
1761
if(S_ISREG(st.st_mode)
1762
and st.st_uid == 0 and st.st_gid == 0){
1763
ret = fchown(pubkey_fd, uid, gid);
1765
perror_plus("fchown");
1769
TEMP_FAILURE_RETRY(close(pubkey_fd));
1773
/* Lower privileges */
1777
perror_plus("seteuid");
1782
/* Run network hooks */
1783
if(not run_network_hooks("start", interface, delay)){
1099
1788
avahi_set_log_function(empty_log);
1791
if(interface[0] == '\0'){
1792
struct dirent **direntries;
1793
/* First look for interfaces that are up */
1794
ret = scandir(sys_class_net, &direntries, up_interface,
1797
/* No up interfaces, look for any good interfaces */
1799
ret = scandir(sys_class_net, &direntries, good_interface,
1803
/* Pick the first interface returned */
1804
interface = strdup(direntries[0]->d_name);
1806
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1808
if(interface == NULL){
1809
perror_plus("malloc");
1811
exitcode = EXIT_FAILURE;
1817
fprintf_plus(stderr, "Could not find a network interface\n");
1818
exitcode = EXIT_FAILURE;
1102
1823
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1103
1824
from the signal handler */
1104
1825
/* Initialize the pseudo-RNG for Avahi */
1105
1826
srand((unsigned int) time(NULL));
1106
1827
mc.simple_poll = avahi_simple_poll_new();
1107
1828
if(mc.simple_poll == NULL){
1108
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1109
exitcode = EXIT_FAILURE;
1829
fprintf_plus(stderr,
1830
"Avahi: Failed to create simple poll object.\n");
1831
exitcode = EX_UNAVAILABLE;
1113
1835
sigemptyset(&sigterm_action.sa_mask);
1114
1836
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1116
perror("sigaddset");
1117
exitcode = EXIT_FAILURE;
1838
perror_plus("sigaddset");
1839
exitcode = EX_OSERR;
1120
1842
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1122
perror("sigaddset");
1123
exitcode = EXIT_FAILURE;
1844
perror_plus("sigaddset");
1845
exitcode = EX_OSERR;
1126
1848
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1128
perror("sigaddset");
1129
exitcode = EXIT_FAILURE;
1850
perror_plus("sigaddset");
1851
exitcode = EX_OSERR;
1132
1854
/* Need to check if the handler is SIG_IGN before handling:
1470
2227
gpgme_release(mc.ctx);
1473
/* Take down the network interface */
1474
if(take_down_interface){
1475
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1477
perror("ioctl SIOCGIFFLAGS");
1478
} else if(network.ifr_flags & IFF_UP) {
1479
network.ifr_flags &= ~IFF_UP; /* clear flag */
1480
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1482
perror("ioctl SIOCSIFFLAGS");
1485
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1491
/* Removes the temp directory used by GPGME */
2230
/* Cleans up the circular linked list of Mandos servers the client
2232
if(mc.current_server != NULL){
2233
mc.current_server->prev->next = NULL;
2234
while(mc.current_server != NULL){
2235
server *next = mc.current_server->next;
2236
free(mc.current_server);
2237
mc.current_server = next;
2241
/* Run network hooks */
2242
run_network_hooks("stop", interface, delay);
2244
/* Re-raise priviliges */
2249
perror_plus("seteuid");
2252
/* Take down the network interface */
2253
if(take_down_interface and geteuid() == 0){
2254
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2256
perror_plus("ioctl SIOCGIFFLAGS");
2257
} else if(network.ifr_flags & IFF_UP){
2258
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2259
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2261
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
2264
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2266
perror_plus("close");
2270
/* Lower privileges permanently */
2274
perror_plus("setuid");
2277
/* Removes the GPGME temp directory and all files inside */
1492
2278
if(tempdir_created){
1494
struct dirent *direntry;
1495
d = opendir(tempdir);
1497
if(errno != ENOENT){
1502
direntry = readdir(d);
1503
if(direntry == NULL){
1506
/* Skip "." and ".." */
1507
if(direntry->d_name[0] == '.'
1508
and (direntry->d_name[1] == '\0'
1509
or (direntry->d_name[1] == '.'
1510
and direntry->d_name[2] == '\0'))){
2279
struct dirent **direntries = NULL;
2280
struct dirent *direntry = NULL;
2281
int numentries = scandir(tempdir, &direntries, notdotentries,
2283
if (numentries > 0){
2284
for(int i = 0; i < numentries; i++){
2285
direntry = direntries[i];
1513
2286
char *fullname = NULL;
1514
2287
ret = asprintf(&fullname, "%s/%s", tempdir,
1515
2288
direntry->d_name);
2290
perror_plus("asprintf");
1520
2293
ret = remove(fullname);
1522
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2295
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
1525
2298
free(fullname);
2302
/* need to clean even if 0 because man page doesn't specify */
2304
if (numentries == -1){
2305
perror_plus("scandir");
1529
2307
ret = rmdir(tempdir);
1530
2308
if(ret == -1 and errno != ENOENT){
2309
perror_plus("rmdir");
1536
2314
sigemptyset(&old_sigterm_action.sa_mask);
1537
2315
old_sigterm_action.sa_handler = SIG_DFL;
1538
ret = sigaction(signal_received, &old_sigterm_action, NULL);
2316
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
2317
&old_sigterm_action,
1540
perror("sigaction");
1542
raise(signal_received);
2320
perror_plus("sigaction");
2323
ret = raise(signal_received);
2324
} while(ret != 0 and errno == EINTR);
2326
perror_plus("raise");
2329
TEMP_FAILURE_RETRY(pause());
1545
2332
return exitcode;