31
32
/* Needed by GPGME, specifically gpgme_data_seek() */
33
#ifndef _LARGEFILE_SOURCE
32
34
#define _LARGEFILE_SOURCE
36
#ifndef _FILE_OFFSET_BITS
33
37
#define _FILE_OFFSET_BITS 64
35
40
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
42
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror(), remove() */
39
44
#include <stdint.h> /* uint16_t, uint32_t */
40
45
#include <stddef.h> /* NULL, size_t, ssize_t */
41
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
#include <stdbool.h> /* bool, true */
47
srand(), strtof(), abort() */
48
#include <stdbool.h> /* bool, false, true */
44
49
#include <string.h> /* memset(), strcmp(), strlen(),
45
50
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
51
#include <sys/ioctl.h> /* ioctl */
47
52
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
53
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t, open(), opendir(), DIR */
54
SOCK_STREAM, uid_t, gid_t, open(),
51
56
#include <sys/stat.h> /* open() */
52
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
58
inet_pton(), connect() */
55
59
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
60
#include <dirent.h> /* opendir(), struct dirent, readdir()
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
58
64
#include <assert.h> /* assert() */
59
65
#include <errno.h> /* perror(), errno */
60
#include <time.h> /* time() */
66
#include <time.h> /* nanosleep(), time() */
61
67
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
62
68
SIOCSIFFLAGS, if_indextoname(),
63
69
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
70
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
71
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
65
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
66
getuid(), getgid(), setuid(),
74
getuid(), getgid(), seteuid(),
68
76
#include <arpa/inet.h> /* inet_pton(), htons */
69
#include <iso646.h> /* not, and */
77
#include <iso646.h> /* not, or, and */
70
78
#include <argp.h> /* struct argp_option, error_t, struct
71
79
argp_state, struct argp,
72
80
argp_parse(), ARGP_KEY_ARG,
73
81
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
sigaction(), SIGTERM, sig_atomic_t,
87
#include <sys/klog.h> /* klogctl() */
88
#endif /* __linux__ */
76
91
/* All Avahi types, constants and functions
965
/* stop main loop after sigterm has been called */
966
static void handle_sigterm(int sig){
971
signal_received = sig;
972
int old_errno = errno;
973
if(mc.simple_poll != NULL){
974
avahi_simple_poll_quit(mc.simple_poll);
980
* This function determines if a directory entry in /sys/class/net
981
* corresponds to an acceptable network device.
982
* (This function is passed to scandir(3) as a filter function.)
984
int good_interface(const struct dirent *if_entry){
986
char *flagname = NULL;
987
int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,
993
if(if_entry->d_name[0] == '.'){
996
int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));
1001
typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */
1002
/* read line from flags_fd */
1003
ssize_t to_read = (sizeof(ifreq_flags)*2)+3; /* "0x1003\n" */
1004
char *flagstring = malloc((size_t)to_read);
1005
if(flagstring == NULL){
1011
ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,
1028
tmpmax = strtoimax(flagstring, &tmp, 0);
1029
if(errno != 0 or tmp == flagstring or (*tmp != '\0'
1030
and not (isspace(*tmp)))
1031
or tmpmax != (ifreq_flags)tmpmax){
1036
ifreq_flags flags = (ifreq_flags)tmpmax;
1037
/* Reject the loopback device */
1038
if(flags & IFF_LOOPBACK){
1041
/* Accept point-to-point devices only if connect_to is specified */
1042
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1045
/* Otherwise, reject non-broadcast-capable devices */
1046
if(not (flags & IFF_BROADCAST)){
1049
/* Accept this device */
813
1053
int main(int argc, char *argv[]){
814
AvahiSServiceBrowser *sb = NULL;
817
int exitcode = EXIT_SUCCESS;
818
const char *interface = "eth0";
819
struct ifreq network;
823
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
825
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
829
mandos_context mc = { .simple_poll = NULL, .server = NULL,
830
.dh_bits = 1024, .priority = "SECURE256"
831
":!CTYPE-X.509:+CTYPE-OPENPGP" };
832
bool gnutls_initalized = false;
833
bool pgpme_initalized = false;
836
struct argp_option options[] = {
837
{ .name = "debug", .key = 128,
838
.doc = "Debug mode", .group = 3 },
839
{ .name = "connect", .key = 'c',
840
.arg = "ADDRESS:PORT",
841
.doc = "Connect directly to a specific Mandos server",
843
{ .name = "interface", .key = 'i',
845
.doc = "Interface that will be used to search for Mandos"
848
{ .name = "seckey", .key = 's',
850
.doc = "OpenPGP secret key file base name",
852
{ .name = "pubkey", .key = 'p',
854
.doc = "OpenPGP public key file base name",
856
{ .name = "dh-bits", .key = 129,
858
.doc = "Bit length of the prime number used in the"
859
" Diffie-Hellman key exchange",
861
{ .name = "priority", .key = 130,
863
.doc = "GnuTLS priority string for the TLS handshake",
868
error_t parse_opt (int key, char *arg,
869
struct argp_state *state) {
870
/* Get the INPUT argument from `argp_parse', which we know is
871
a pointer to our plugin list pointer. */
873
case 128: /* --debug */
876
case 'c': /* --connect */
879
case 'i': /* --interface */
882
case 's': /* --seckey */
885
case 'p': /* --pubkey */
888
case 129: /* --dh-bits */
890
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
896
case 130: /* --priority */
904
return ARGP_ERR_UNKNOWN;
909
struct argp argp = { .options = options, .parser = parse_opt,
911
.doc = "Mandos client -- Get and decrypt"
912
" passwords from a Mandos server" };
913
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
914
if (ret == ARGP_ERR_UNKNOWN){
915
fprintf(stderr, "Unknown error while parsing arguments\n");
916
exitcode = EXIT_FAILURE;
1054
AvahiSServiceBrowser *sb = NULL;
1059
int exitcode = EXIT_SUCCESS;
1060
const char *interface = "";
1061
struct ifreq network;
1063
bool take_down_interface = false;
1066
char tempdir[] = "/tmp/mandosXXXXXX";
1067
bool tempdir_created = false;
1068
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1069
const char *seckey = PATHDIR "/" SECKEY;
1070
const char *pubkey = PATHDIR "/" PUBKEY;
1072
bool gnutls_initialized = false;
1073
bool gpgme_initialized = false;
1076
struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
1077
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
1082
/* Lower any group privileges we might have, just to be safe */
1089
/* Lower user privileges (temporarily) */
1101
struct argp_option options[] = {
1102
{ .name = "debug", .key = 128,
1103
.doc = "Debug mode", .group = 3 },
1104
{ .name = "connect", .key = 'c',
1105
.arg = "ADDRESS:PORT",
1106
.doc = "Connect directly to a specific Mandos server",
1108
{ .name = "interface", .key = 'i',
1110
.doc = "Network interface that will be used to search for"
1113
{ .name = "seckey", .key = 's',
1115
.doc = "OpenPGP secret key file base name",
1117
{ .name = "pubkey", .key = 'p',
1119
.doc = "OpenPGP public key file base name",
1121
{ .name = "dh-bits", .key = 129,
1123
.doc = "Bit length of the prime number used in the"
1124
" Diffie-Hellman key exchange",
1126
{ .name = "priority", .key = 130,
1128
.doc = "GnuTLS priority string for the TLS handshake",
1130
{ .name = "delay", .key = 131,
1132
.doc = "Maximum delay to wait for interface startup",
1137
error_t parse_opt(int key, char *arg,
1138
struct argp_state *state){
1140
case 128: /* --debug */
1143
case 'c': /* --connect */
1146
case 'i': /* --interface */
1149
case 's': /* --seckey */
1152
case 'p': /* --pubkey */
1155
case 129: /* --dh-bits */
1157
tmpmax = strtoimax(arg, &tmp, 10);
1158
if(errno != 0 or tmp == arg or *tmp != '\0'
1159
or tmpmax != (typeof(mc.dh_bits))tmpmax){
1160
fprintf(stderr, "Bad number of DH bits\n");
1163
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
1165
case 130: /* --priority */
1168
case 131: /* --delay */
1170
delay = strtof(arg, &tmp);
1171
if(errno != 0 or tmp == arg or *tmp != '\0'){
1172
fprintf(stderr, "Bad delay\n");
1181
return ARGP_ERR_UNKNOWN;
921
ret = init_gnutls_global(&mc, pubkey, seckey);
923
fprintf(stderr, "init_gnutls_global failed\n");
1186
struct argp argp = { .options = options, .parser = parse_opt,
1188
.doc = "Mandos client -- Get and decrypt"
1189
" passwords from a Mandos server" };
1190
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1191
if(ret == ARGP_ERR_UNKNOWN){
1192
fprintf(stderr, "Unknown error while parsing arguments\n");
924
1193
exitcode = EXIT_FAILURE;
927
gnutls_initalized = true;
1199
avahi_set_log_function(empty_log);
930
if(mkdtemp(tempdir) == NULL){
936
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
937
fprintf(stderr, "pgpme_initalized failed\n");
938
exitcode = EXIT_FAILURE;
1202
if(interface[0] == '\0'){
1203
struct dirent **direntries;
1204
ret = scandir(sys_class_net, &direntries, good_interface,
1207
/* Pick the first good interface */
1208
interface = strdup(direntries[0]->d_name);
1209
if(interface == NULL){
1212
exitcode = EXIT_FAILURE;
941
pgpme_initalized = true;
944
/* If the interface is down, bring it up */
946
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
949
exitcode = EXIT_FAILURE;
952
strcpy(network.ifr_name, interface);
953
ret = ioctl(sd, SIOCGIFFLAGS, &network);
955
perror("ioctl SIOCGIFFLAGS");
956
exitcode = EXIT_FAILURE;
959
if((network.ifr_flags & IFF_UP) == 0){
960
network.ifr_flags |= IFF_UP;
961
ret = ioctl(sd, SIOCSIFFLAGS, &network);
963
perror("ioctl SIOCSIFFLAGS");
964
exitcode = EXIT_FAILURE;
968
ret = TEMP_FAILURE_RETRY(close(sd));
1218
fprintf(stderr, "Could not find a network interface\n");
1219
exitcode = EXIT_FAILURE;
1224
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1225
from the signal handler */
1226
/* Initialize the pseudo-RNG for Avahi */
1227
srand((unsigned int) time(NULL));
1228
mc.simple_poll = avahi_simple_poll_new();
1229
if(mc.simple_poll == NULL){
1230
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1231
exitcode = EXIT_FAILURE;
1235
sigemptyset(&sigterm_action.sa_mask);
1236
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1238
perror("sigaddset");
1239
exitcode = EXIT_FAILURE;
1242
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1244
perror("sigaddset");
1245
exitcode = EXIT_FAILURE;
1248
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1250
perror("sigaddset");
1251
exitcode = EXIT_FAILURE;
1254
/* Need to check if the handler is SIG_IGN before handling:
1255
| [[info:libc:Initial Signal Actions]] |
1256
| [[info:libc:Basic Signal Handling]] |
1258
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1260
perror("sigaction");
1261
return EXIT_FAILURE;
1263
if(old_sigterm_action.sa_handler != SIG_IGN){
1264
ret = sigaction(SIGINT, &sigterm_action, NULL);
1266
perror("sigaction");
1267
exitcode = EXIT_FAILURE;
1271
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1273
perror("sigaction");
1274
return EXIT_FAILURE;
1276
if(old_sigterm_action.sa_handler != SIG_IGN){
1277
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1279
perror("sigaction");
1280
exitcode = EXIT_FAILURE;
1284
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1286
perror("sigaction");
1287
return EXIT_FAILURE;
1289
if(old_sigterm_action.sa_handler != SIG_IGN){
1290
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1292
perror("sigaction");
1293
exitcode = EXIT_FAILURE;
1298
/* If the interface is down, bring it up */
1299
if(strcmp(interface, "none") != 0){
987
1300
if_index = (AvahiIfIndex) if_nametoindex(interface);
988
1301
if(if_index == 0){
989
1302
fprintf(stderr, "No such interface: \"%s\"\n", interface);
993
if(connect_to != NULL){
994
/* Connect directly, do not use Zeroconf */
995
/* (Mainly meant for debugging) */
996
char *address = strrchr(connect_to, ':');
998
fprintf(stderr, "No colon in address\n");
999
exitcode = EXIT_FAILURE;
1003
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1005
perror("Bad port number");
1006
exitcode = EXIT_FAILURE;
1010
address = connect_to;
1011
ret = start_mandos_communication(address, port, if_index, &mc);
1013
exitcode = EXIT_FAILURE;
1015
exitcode = EXIT_SUCCESS;
1021
avahi_set_log_function(empty_log);
1024
/* Initialize the pseudo-RNG for Avahi */
1025
srand((unsigned int) time(NULL));
1027
/* Allocate main Avahi loop object */
1028
mc.simple_poll = avahi_simple_poll_new();
1029
if (mc.simple_poll == NULL) {
1030
fprintf(stderr, "Avahi: Failed to create simple poll"
1032
exitcode = EXIT_FAILURE;
1037
AvahiServerConfig config;
1038
/* Do not publish any local Zeroconf records */
1039
avahi_server_config_init(&config);
1040
config.publish_hinfo = 0;
1041
config.publish_addresses = 0;
1042
config.publish_workstation = 0;
1043
config.publish_domain = 0;
1045
/* Allocate a new server */
1046
mc.server = avahi_server_new(avahi_simple_poll_get
1047
(mc.simple_poll), &config, NULL,
1050
/* Free the Avahi configuration data */
1051
avahi_server_config_free(&config);
1054
/* Check if creating the Avahi server object succeeded */
1055
if (mc.server == NULL) {
1056
fprintf(stderr, "Failed to create Avahi server: %s\n",
1057
avahi_strerror(error));
1058
exitcode = EXIT_FAILURE;
1062
/* Create the Avahi service browser */
1063
sb = avahi_s_service_browser_new(mc.server, if_index,
1065
"_mandos._tcp", NULL, 0,
1066
browse_callback, &mc);
1068
fprintf(stderr, "Failed to create service browser: %s\n",
1069
avahi_strerror(avahi_server_errno(mc.server)));
1070
exitcode = EXIT_FAILURE;
1074
/* Run the main loop */
1077
fprintf(stderr, "Starting Avahi loop search\n");
1080
avahi_simple_poll_loop(mc.simple_poll);
1303
exitcode = EXIT_FAILURE;
1311
/* Re-raise priviliges */
1319
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1320
messages to mess up the prompt */
1321
ret = klogctl(8, NULL, 5);
1322
bool restore_loglevel = true;
1324
restore_loglevel = false;
1327
#endif /* __linux__ */
1329
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1332
exitcode = EXIT_FAILURE;
1334
if(restore_loglevel){
1335
ret = klogctl(7, NULL, 0);
1340
#endif /* __linux__ */
1341
/* Lower privileges */
1349
strcpy(network.ifr_name, interface);
1350
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1352
perror("ioctl SIOCGIFFLAGS");
1354
if(restore_loglevel){
1355
ret = klogctl(7, NULL, 0);
1360
#endif /* __linux__ */
1361
exitcode = EXIT_FAILURE;
1362
/* Lower privileges */
1370
if((network.ifr_flags & IFF_UP) == 0){
1371
network.ifr_flags |= IFF_UP;
1372
take_down_interface = true;
1373
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1375
take_down_interface = false;
1376
perror("ioctl SIOCSIFFLAGS");
1377
exitcode = EXIT_FAILURE;
1379
if(restore_loglevel){
1380
ret = klogctl(7, NULL, 0);
1385
#endif /* __linux__ */
1386
/* Lower privileges */
1395
/* sleep checking until interface is running */
1396
for(int i=0; i < delay * 4; i++){
1397
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1399
perror("ioctl SIOCGIFFLAGS");
1400
} else if(network.ifr_flags & IFF_RUNNING){
1403
struct timespec sleeptime = { .tv_nsec = 250000000 };
1404
ret = nanosleep(&sleeptime, NULL);
1405
if(ret == -1 and errno != EINTR){
1406
perror("nanosleep");
1409
if(not take_down_interface){
1410
/* We won't need the socket anymore */
1411
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1417
if(restore_loglevel){
1418
/* Restores kernel loglevel to default */
1419
ret = klogctl(7, NULL, 0);
1424
#endif /* __linux__ */
1425
/* Lower privileges */
1427
if(take_down_interface){
1428
/* Lower privileges */
1434
/* Lower privileges permanently */
1446
ret = init_gnutls_global(pubkey, seckey);
1448
fprintf(stderr, "init_gnutls_global failed\n");
1449
exitcode = EXIT_FAILURE;
1452
gnutls_initialized = true;
1459
tempdir_created = true;
1460
if(mkdtemp(tempdir) == NULL){
1461
tempdir_created = false;
1470
if(not init_gpgme(pubkey, seckey, tempdir)){
1471
fprintf(stderr, "init_gpgme failed\n");
1472
exitcode = EXIT_FAILURE;
1475
gpgme_initialized = true;
1482
if(connect_to != NULL){
1483
/* Connect directly, do not use Zeroconf */
1484
/* (Mainly meant for debugging) */
1485
char *address = strrchr(connect_to, ':');
1486
if(address == NULL){
1487
fprintf(stderr, "No colon in address\n");
1488
exitcode = EXIT_FAILURE;
1498
tmpmax = strtoimax(address+1, &tmp, 10);
1499
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1500
or tmpmax != (uint16_t)tmpmax){
1501
fprintf(stderr, "Bad port number\n");
1502
exitcode = EXIT_FAILURE;
1510
port = (uint16_t)tmpmax;
1512
address = connect_to;
1513
/* Colon in address indicates IPv6 */
1515
if(strchr(address, ':') != NULL){
1525
ret = start_mandos_communication(address, port, if_index, af);
1527
exitcode = EXIT_FAILURE;
1529
exitcode = EXIT_SUCCESS;
1539
AvahiServerConfig config;
1540
/* Do not publish any local Zeroconf records */
1541
avahi_server_config_init(&config);
1542
config.publish_hinfo = 0;
1543
config.publish_addresses = 0;
1544
config.publish_workstation = 0;
1545
config.publish_domain = 0;
1547
/* Allocate a new server */
1548
mc.server = avahi_server_new(avahi_simple_poll_get
1549
(mc.simple_poll), &config, NULL,
1552
/* Free the Avahi configuration data */
1553
avahi_server_config_free(&config);
1556
/* Check if creating the Avahi server object succeeded */
1557
if(mc.server == NULL){
1558
fprintf(stderr, "Failed to create Avahi server: %s\n",
1559
avahi_strerror(error));
1560
exitcode = EXIT_FAILURE;
1568
/* Create the Avahi service browser */
1569
sb = avahi_s_service_browser_new(mc.server, if_index,
1570
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1571
NULL, 0, browse_callback, NULL);
1573
fprintf(stderr, "Failed to create service browser: %s\n",
1574
avahi_strerror(avahi_server_errno(mc.server)));
1575
exitcode = EXIT_FAILURE;
1583
/* Run the main loop */
1586
fprintf(stderr, "Starting Avahi loop search\n");
1589
avahi_simple_poll_loop(mc.simple_poll);
1085
fprintf(stderr, "%s exiting\n", argv[0]);
1088
/* Cleanup things */
1090
avahi_s_service_browser_free(sb);
1092
if (mc.server != NULL)
1093
avahi_server_free(mc.server);
1095
if (mc.simple_poll != NULL)
1096
avahi_simple_poll_free(mc.simple_poll);
1098
if (gnutls_initalized){
1099
gnutls_certificate_free_credentials(mc.cred);
1100
gnutls_global_deinit ();
1103
if(pgpme_initalized){
1104
gpgme_release(mc.ctx);
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1594
fprintf(stderr, "%s exiting\n", argv[0]);
1597
/* Cleanup things */
1599
avahi_s_service_browser_free(sb);
1601
if(mc.server != NULL)
1602
avahi_server_free(mc.server);
1604
if(mc.simple_poll != NULL)
1605
avahi_simple_poll_free(mc.simple_poll);
1607
if(gnutls_initialized){
1608
gnutls_certificate_free_credentials(mc.cred);
1609
gnutls_global_deinit();
1610
gnutls_dh_params_deinit(mc.dh_params);
1613
if(gpgme_initialized){
1614
gpgme_release(mc.ctx);
1617
/* Take down the network interface */
1618
if(take_down_interface){
1619
/* Re-raise priviliges */
1626
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1628
perror("ioctl SIOCGIFFLAGS");
1629
} else if(network.ifr_flags & IFF_UP) {
1630
network.ifr_flags &= ~IFF_UP; /* clear flag */
1631
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1633
perror("ioctl SIOCSIFFLAGS");
1636
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1640
/* Lower privileges permanently */
1649
/* Removes the temp directory used by GPGME */
1650
if(tempdir_created){
1652
struct dirent *direntry;
1653
d = opendir(tempdir);
1655
if(errno != ENOENT){
1113
1656
perror("opendir");
1116
direntry = readdir(d);
1117
if(direntry == NULL){
1120
if (direntry->d_type == DT_REG){
1121
char *fullname = NULL;
1122
ret = asprintf(&fullname, "%s/%s", tempdir,
1128
ret = unlink(fullname);
1130
fprintf(stderr, "unlink(\"%s\"): %s",
1131
fullname, strerror(errno));
1137
ret = rmdir(tempdir);
1660
direntry = readdir(d);
1661
if(direntry == NULL){
1664
/* Skip "." and ".." */
1665
if(direntry->d_name[0] == '.'
1666
and (direntry->d_name[1] == '\0'
1667
or (direntry->d_name[1] == '.'
1668
and direntry->d_name[2] == '\0'))){
1671
char *fullname = NULL;
1672
ret = asprintf(&fullname, "%s/%s", tempdir,
1678
ret = remove(fullname);
1680
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1687
ret = rmdir(tempdir);
1688
if(ret == -1 and errno != ENOENT){
1694
sigemptyset(&old_sigterm_action.sa_mask);
1695
old_sigterm_action.sa_handler = SIG_DFL;
1696
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
1697
&old_sigterm_action,
1700
perror("sigaction");
1703
ret = raise(signal_received);
1704
} while(ret != 0 and errno == EINTR);
1709
TEMP_FAILURE_RETRY(pause());