250
173
* Helper function to insert pub and seckey to the engine keyring.
252
175
bool import_key(const char *filename){
255
177
gpgme_data_t pgp_data;
257
179
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
263
185
rc = gpgme_data_new_from_fd(&pgp_data, fd);
264
186
if(rc != GPG_ERR_NO_ERROR){
265
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
266
gpgme_strsource(rc), gpgme_strerror(rc));
187
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
188
gpgme_strsource(rc), gpgme_strerror(rc));
270
192
rc = gpgme_op_import(mc.ctx, pgp_data);
271
193
if(rc != GPG_ERR_NO_ERROR){
272
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
273
gpgme_strsource(rc), gpgme_strerror(rc));
194
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
195
gpgme_strsource(rc), gpgme_strerror(rc));
277
199
ret = (int)TEMP_FAILURE_RETRY(close(fd));
279
perror_plus("close");
281
203
gpgme_data_release(pgp_data);
286
fprintf_plus(stderr, "Initializing GPGME\n");
208
fprintf(stderr, "Initializing GPGME\n");
290
212
gpgme_check_version(NULL);
291
213
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
292
214
if(rc != GPG_ERR_NO_ERROR){
293
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
294
gpgme_strsource(rc), gpgme_strerror(rc));
215
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
216
gpgme_strsource(rc), gpgme_strerror(rc));
298
/* Set GPGME home directory for the OpenPGP engine only */
220
/* Set GPGME home directory for the OpenPGP engine only */
299
221
rc = gpgme_get_engine_info(&engine_info);
300
222
if(rc != GPG_ERR_NO_ERROR){
301
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
302
gpgme_strsource(rc), gpgme_strerror(rc));
223
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
224
gpgme_strsource(rc), gpgme_strerror(rc));
305
227
while(engine_info != NULL){
373
292
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
374
293
if(rc != GPG_ERR_NO_ERROR){
375
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
376
gpgme_strsource(rc), gpgme_strerror(rc));
294
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
295
gpgme_strsource(rc), gpgme_strerror(rc));
377
296
plaintext_length = -1;
379
298
gpgme_decrypt_result_t result;
380
299
result = gpgme_op_decrypt_result(mc.ctx);
381
300
if(result == NULL){
382
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
301
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
384
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
385
result->unsupported_algorithm);
386
fprintf_plus(stderr, "Wrong key usage: %u\n",
387
result->wrong_key_usage);
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
307
if(result->file_name != NULL){
389
fprintf_plus(stderr, "File name: %s\n", result->file_name);
308
fprintf(stderr, "File name: %s\n", result->file_name);
391
310
gpgme_recipient_t recipient;
392
311
recipient = result->recipients;
393
312
while(recipient != NULL){
394
fprintf_plus(stderr, "Public key algorithm: %s\n",
395
gpgme_pubkey_algo_name
396
(recipient->pubkey_algo));
397
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
398
fprintf_plus(stderr, "Secret key available: %s\n",
399
recipient->status == GPG_ERR_NO_SECKEY
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
401
319
recipient = recipient->next;
500
418
/* OpenPGP credentials */
501
ret = gnutls_certificate_allocate_credentials(&mc.cred);
419
gnutls_certificate_allocate_credentials(&mc.cred);
502
420
if(ret != GNUTLS_E_SUCCESS){
503
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
504
safer_gnutls_strerror(ret));
421
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
425
safer_gnutls_strerror(ret));
505
426
gnutls_global_deinit();
510
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
511
" secret key %s as GnuTLS credentials\n",
431
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
432
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
516
436
ret = gnutls_certificate_set_openpgp_key_file
517
437
(mc.cred, pubkeyfilename, seckeyfilename,
518
438
GNUTLS_OPENPGP_FMT_BASE64);
519
439
if(ret != GNUTLS_E_SUCCESS){
521
"Error[%d] while reading the OpenPGP key pair ('%s',"
522
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
523
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
524
safer_gnutls_strerror(ret));
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));
528
448
/* GnuTLS server initialization */
529
449
ret = gnutls_dh_params_init(&mc.dh_params);
530
450
if(ret != GNUTLS_E_SUCCESS){
531
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
532
" initialization: %s\n",
533
safer_gnutls_strerror(ret));
451
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
452
" %s\n", safer_gnutls_strerror(ret));
536
455
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
537
456
if(ret != GNUTLS_E_SUCCESS){
538
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
539
safer_gnutls_strerror(ret));
457
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
458
safer_gnutls_strerror(ret));
555
474
static int init_gnutls_session(gnutls_session_t *session){
557
476
/* GnuTLS session creation */
559
ret = gnutls_init(session, GNUTLS_SERVER);
563
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
477
ret = gnutls_init(session, GNUTLS_SERVER);
564
478
if(ret != GNUTLS_E_SUCCESS){
566
"Error in GnuTLS session initialization: %s\n",
567
safer_gnutls_strerror(ret));
479
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
480
safer_gnutls_strerror(ret));
573
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
575
gnutls_deinit(*session);
578
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
485
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
579
486
if(ret != GNUTLS_E_SUCCESS){
580
fprintf_plus(stderr, "Syntax error at: %s\n", err);
581
fprintf_plus(stderr, "GnuTLS error: %s\n",
582
safer_gnutls_strerror(ret));
487
fprintf(stderr, "Syntax error at: %s\n", err);
488
fprintf(stderr, "GnuTLS error: %s\n",
489
safer_gnutls_strerror(ret));
583
490
gnutls_deinit(*session);
589
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
592
gnutls_deinit(*session);
595
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
495
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
596
497
if(ret != GNUTLS_E_SUCCESS){
597
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
598
safer_gnutls_strerror(ret));
498
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
499
safer_gnutls_strerror(ret));
599
500
gnutls_deinit(*session);
603
504
/* ignore client certificate if any. */
604
gnutls_certificate_server_set_request(*session, GNUTLS_CERT_IGNORE);
505
gnutls_certificate_server_set_request(*session,
606
508
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
1101
965
signal_received = sig;
1102
966
int old_errno = errno;
1103
/* set main loop to exit */
1104
967
if(mc.simple_poll != NULL){
1105
968
avahi_simple_poll_quit(mc.simple_poll);
1107
970
errno = old_errno;
1110
bool get_flags(const char *ifname, struct ifreq *ifr){
1113
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1115
perror_plus("socket");
1118
strcpy(ifr->ifr_name, ifname);
1119
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1122
perror_plus("ioctl SIOCGIFFLAGS");
1129
bool good_flags(const char *ifname, const struct ifreq *ifr){
1131
/* Reject the loopback device */
1132
if(ifr->ifr_flags & IFF_LOOPBACK){
1134
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1139
/* Accept point-to-point devices only if connect_to is specified */
1140
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1142
fprintf_plus(stderr, "Accepting point-to-point interface"
1143
" \"%s\"\n", ifname);
1147
/* Otherwise, reject non-broadcast-capable devices */
1148
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1150
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1151
" \"%s\"\n", ifname);
1155
/* Reject non-ARP interfaces (including dummy interfaces) */
1156
if(ifr->ifr_flags & IFF_NOARP){
1158
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1164
/* Accept this device */
1166
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1172
* This function determines if a directory entry in /sys/class/net
1173
* corresponds to an acceptable network device.
1174
* (This function is passed to scandir(3) as a filter function.)
1176
int good_interface(const struct dirent *if_entry){
1177
if(if_entry->d_name[0] == '.'){
1182
if(not get_flags(if_entry->d_name, &ifr)){
1184
fprintf_plus(stderr, "Failed to get flags for interface "
1185
"\"%s\"\n", if_entry->d_name);
1190
if(not good_flags(if_entry->d_name, &ifr)){
1197
* This function determines if a directory entry in /sys/class/net
1198
* corresponds to an acceptable network device which is up.
1199
* (This function is passed to scandir(3) as a filter function.)
1201
int up_interface(const struct dirent *if_entry){
1202
if(if_entry->d_name[0] == '.'){
1207
if(not get_flags(if_entry->d_name, &ifr)){
1209
fprintf_plus(stderr, "Failed to get flags for interface "
1210
"\"%s\"\n", if_entry->d_name);
1215
/* Reject down interfaces */
1216
if(not (ifr.ifr_flags & IFF_UP)){
1218
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1224
/* Reject non-running interfaces */
1225
if(not (ifr.ifr_flags & IFF_RUNNING)){
1227
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1233
if(not good_flags(if_entry->d_name, &ifr)){
1239
int notdotentries(const struct dirent *direntry){
1240
/* Skip "." and ".." */
1241
if(direntry->d_name[0] == '.'
1242
and (direntry->d_name[1] == '\0'
1243
or (direntry->d_name[1] == '.'
1244
and direntry->d_name[2] == '\0'))){
1250
/* Is this directory entry a runnable program? */
1251
int runnable_hook(const struct dirent *direntry){
1256
if((direntry->d_name)[0] == '\0'){
1261
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1262
"abcdefghijklmnopqrstuvwxyz"
1265
if((direntry->d_name)[sret] != '\0'){
1266
/* Contains non-allowed characters */
1268
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1274
char *fullname = NULL;
1275
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1277
perror_plus("asprintf");
1281
ret = stat(fullname, &st);
1284
perror_plus("Could not stat hook");
1288
if(not (S_ISREG(st.st_mode))){
1289
/* Not a regular file */
1291
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1296
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1297
/* Not executable */
1299
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1307
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1309
struct timespec now;
1310
struct timespec waited_time;
1311
intmax_t block_time;
1314
if(mc.current_server == NULL){
1316
fprintf_plus(stderr, "Wait until first server is found."
1319
ret = avahi_simple_poll_iterate(s, -1);
1322
fprintf_plus(stderr, "Check current_server if we should run"
1325
/* the current time */
1326
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1328
perror_plus("clock_gettime");
1331
/* Calculating in ms how long time between now and server
1332
who we visted longest time ago. Now - last seen. */
1333
waited_time.tv_sec = (now.tv_sec
1334
- mc.current_server->last_seen.tv_sec);
1335
waited_time.tv_nsec = (now.tv_nsec
1336
- mc.current_server->last_seen.tv_nsec);
1337
/* total time is 10s/10,000ms.
1338
Converting to s from ms by dividing by 1,000,
1339
and ns to ms by dividing by 1,000,000. */
1340
block_time = ((retry_interval
1341
- ((intmax_t)waited_time.tv_sec * 1000))
1342
- ((intmax_t)waited_time.tv_nsec / 1000000));
1345
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1349
if(block_time <= 0){
1350
ret = start_mandos_communication(mc.current_server->ip,
1351
mc.current_server->port,
1352
mc.current_server->if_index,
1353
mc.current_server->af);
1355
avahi_simple_poll_quit(mc.simple_poll);
1358
ret = clock_gettime(CLOCK_MONOTONIC,
1359
&mc.current_server->last_seen);
1361
perror_plus("clock_gettime");
1364
mc.current_server = mc.current_server->next;
1365
block_time = 0; /* Call avahi to find new Mandos
1366
servers, but don't block */
1369
ret = avahi_simple_poll_iterate(s, (int)block_time);
1372
if (ret > 0 or errno != EINTR){
1373
return (ret != 1) ? ret : 0;
1379
bool run_network_hooks(const char *mode, const char *interface,
1381
struct dirent **direntries;
1382
struct dirent *direntry;
1384
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1387
perror_plus("scandir");
1389
int devnull = open("/dev/null", O_RDONLY);
1390
for(int i = 0; i < numhooks; i++){
1391
direntry = direntries[0];
1392
char *fullname = NULL;
1393
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1395
perror_plus("asprintf");
1398
pid_t hook_pid = fork();
1401
dup2(devnull, STDIN_FILENO);
1403
dup2(STDERR_FILENO, STDOUT_FILENO);
1404
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1406
perror_plus("setenv");
1409
ret = setenv("DEVICE", interface, 1);
1411
perror_plus("setenv");
1414
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1416
perror_plus("setenv");
1419
ret = setenv("MODE", mode, 1);
1421
perror_plus("setenv");
1425
ret = asprintf(&delaystring, "%f", delay);
1427
perror_plus("asprintf");
1430
ret = setenv("DELAY", delaystring, 1);
1433
perror_plus("setenv");
1437
ret = execl(fullname, direntry->d_name, mode, NULL);
1438
perror_plus("execl");
1441
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1442
perror_plus("waitpid");
1446
if(WIFEXITED(status)){
1447
if(WEXITSTATUS(status) != 0){
1448
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1449
" with status %d\n", direntry->d_name,
1450
WEXITSTATUS(status));
1454
} else if(WIFSIGNALED(status)){
1455
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1456
" signal %d\n", direntry->d_name,
1461
fprintf_plus(stderr, "Warning: network hook \"%s\""
1462
" crashed\n", direntry->d_name);
1477
973
int main(int argc, char *argv[]){
1478
974
AvahiSServiceBrowser *sb = NULL;
1613
1070
delay = strtof(arg, &tmp);
1614
1071
if(errno != 0 or tmp == arg or *tmp != '\0'){
1615
argp_error(state, "Bad delay");
1617
case 132: /* --retry */
1619
retry_interval = strtod(arg, &tmp);
1620
if(errno != 0 or tmp == arg or *tmp != '\0'
1621
or (retry_interval * 1000) > INT_MAX
1622
or retry_interval < 0){
1623
argp_error(state, "Bad retry interval");
1626
case 133: /* --network-hook-dir */
1630
* These reproduce what we would get without ARGP_NO_HELP
1632
case '?': /* --help */
1633
argp_state_help(state, state->out_stream,
1634
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
1635
& ~(unsigned int)ARGP_HELP_EXIT_OK);
1636
case -3: /* --usage */
1637
argp_state_help(state, state->out_stream,
1638
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1639
case 'V': /* --version */
1640
fprintf_plus(state->out_stream,
1641
"Mandos plugin mandos-client: ");
1642
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1643
exit(argp_err_exit_status);
1072
fprintf(stderr, "Bad delay\n");
1646
1081
return ARGP_ERR_UNKNOWN;
1651
1086
struct argp argp = { .options = options, .parser = parse_opt,
1652
1087
.args_doc = "",
1653
1088
.doc = "Mandos client -- Get and decrypt"
1654
1089
" passwords from a Mandos server" };
1655
ret = argp_parse(&argp, argc, argv,
1656
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
1663
perror_plus("argp_parse");
1664
exitcode = EX_OSERR;
1667
exitcode = EX_USAGE;
1673
/* Work around Debian bug #633582:
1674
<http://bugs.debian.org/633582> */
1677
/* Re-raise priviliges */
1681
perror_plus("seteuid");
1684
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1685
int seckey_fd = open(seckey, O_RDONLY);
1686
if(seckey_fd == -1){
1687
perror_plus("open");
1689
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1691
perror_plus("fstat");
1693
if(S_ISREG(st.st_mode)
1694
and st.st_uid == 0 and st.st_gid == 0){
1695
ret = fchown(seckey_fd, uid, gid);
1697
perror_plus("fchown");
1701
TEMP_FAILURE_RETRY(close(seckey_fd));
1705
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1706
int pubkey_fd = open(pubkey, O_RDONLY);
1707
if(pubkey_fd == -1){
1708
perror_plus("open");
1710
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1712
perror_plus("fstat");
1714
if(S_ISREG(st.st_mode)
1715
and st.st_uid == 0 and st.st_gid == 0){
1716
ret = fchown(pubkey_fd, uid, gid);
1718
perror_plus("fchown");
1722
TEMP_FAILURE_RETRY(close(pubkey_fd));
1726
/* Lower privileges */
1730
perror_plus("seteuid");
1734
/* Run network hooks */
1736
/* Re-raise priviliges */
1740
perror_plus("seteuid");
1742
if(not run_network_hooks("start", interface, delay)){
1745
/* Lower privileges */
1749
perror_plus("seteuid");
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;
1754
1099
avahi_set_log_function(empty_log);
1757
if(interface[0] == '\0'){
1758
struct dirent **direntries;
1759
/* First look for interfaces that are up */
1760
ret = scandir(sys_class_net, &direntries, up_interface,
1763
/* No up interfaces, look for any good interfaces */
1765
ret = scandir(sys_class_net, &direntries, good_interface,
1769
/* Pick the first interface returned */
1770
interface = strdup(direntries[0]->d_name);
1772
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1774
if(interface == NULL){
1775
perror_plus("malloc");
1777
exitcode = EXIT_FAILURE;
1783
fprintf_plus(stderr, "Could not find a network interface\n");
1784
exitcode = EXIT_FAILURE;
1789
1102
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1790
1103
from the signal handler */
1791
1104
/* Initialize the pseudo-RNG for Avahi */
1792
1105
srand((unsigned int) time(NULL));
1793
1106
mc.simple_poll = avahi_simple_poll_new();
1794
1107
if(mc.simple_poll == NULL){
1795
fprintf_plus(stderr,
1796
"Avahi: Failed to create simple poll object.\n");
1797
exitcode = EX_UNAVAILABLE;
1108
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1109
exitcode = EXIT_FAILURE;
1801
1113
sigemptyset(&sigterm_action.sa_mask);
1802
1114
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1804
perror_plus("sigaddset");
1805
exitcode = EX_OSERR;
1116
perror("sigaddset");
1117
exitcode = EXIT_FAILURE;
1808
1120
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1810
perror_plus("sigaddset");
1811
exitcode = EX_OSERR;
1122
perror("sigaddset");
1123
exitcode = EXIT_FAILURE;
1814
1126
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1816
perror_plus("sigaddset");
1817
exitcode = EX_OSERR;
1128
perror("sigaddset");
1129
exitcode = EXIT_FAILURE;
1820
1132
/* Need to check if the handler is SIG_IGN before handling:
2192
1469
if(gpgme_initialized){
2193
1470
gpgme_release(mc.ctx);
2196
/* Cleans up the circular linked list of Mandos servers the client
2198
if(mc.current_server != NULL){
2199
mc.current_server->prev->next = NULL;
2200
while(mc.current_server != NULL){
2201
server *next = mc.current_server->next;
2202
free(mc.current_server);
2203
mc.current_server = next;
2207
/* Re-raise priviliges */
2212
perror_plus("seteuid");
2214
/* Run network hooks */
2215
if(not run_network_hooks("stop", interface, delay)){
2219
/* Take down the network interface */
2220
if(take_down_interface and geteuid() == 0){
2221
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2223
perror_plus("ioctl SIOCGIFFLAGS");
2224
} else if(network.ifr_flags & IFF_UP){
2225
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2226
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2228
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
2231
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2233
perror_plus("close");
2237
/* Lower privileges permanently */
2241
perror_plus("setuid");
2244
/* Removes the GPGME temp directory and all files inside */
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 */
2245
1492
if(tempdir_created){
2246
struct dirent **direntries = NULL;
2247
struct dirent *direntry = NULL;
2248
int numentries = scandir(tempdir, &direntries, notdotentries,
2250
if (numentries > 0){
2251
for(int i = 0; i < numentries; i++){
2252
direntry = direntries[i];
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'))){
2253
1513
char *fullname = NULL;
2254
1514
ret = asprintf(&fullname, "%s/%s", tempdir,
2255
1515
direntry->d_name);
2257
perror_plus("asprintf");
2260
1520
ret = remove(fullname);
2262
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
1522
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2265
1525
free(fullname);
2269
/* need to clean even if 0 because man page doesn't specify */
2271
if (numentries == -1){
2272
perror_plus("scandir");
2274
1529
ret = rmdir(tempdir);
2275
1530
if(ret == -1 and errno != ENOENT){
2276
perror_plus("rmdir");
2281
1536
sigemptyset(&old_sigterm_action.sa_mask);
2282
1537
old_sigterm_action.sa_handler = SIG_DFL;
2283
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
2284
&old_sigterm_action,
1538
ret = sigaction(signal_received, &old_sigterm_action, NULL);
2287
perror_plus("sigaction");
2290
ret = raise(signal_received);
2291
} while(ret != 0 and errno == EINTR);
2293
perror_plus("raise");
2296
TEMP_FAILURE_RETRY(pause());
1540
perror("sigaction");
1542
raise(signal_received);
2299
1545
return exitcode;