80
80
argp_parse(), ARGP_KEY_ARG,
81
81
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
82
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
sigaction(), SIGTERM, sigaction,
83
sigaction(), SIGTERM, sig_atomic_t,
87
87
#include <sys/klog.h> /* klogctl() */
310
310
gpgme_recipient_t recipient;
311
311
recipient = result->recipients;
313
while(recipient != NULL){
314
fprintf(stderr, "Public key algorithm: %s\n",
315
gpgme_pubkey_algo_name(recipient->pubkey_algo));
316
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
317
fprintf(stderr, "Secret key available: %s\n",
318
recipient->status == GPG_ERR_NO_SECKEY
320
recipient = recipient->next;
312
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
319
recipient = recipient->next;
516
514
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
517
515
__attribute__((unused)) const char *txt){}
517
sig_atomic_t quit_now = 0;
518
int signal_received = 0;
519
520
/* Called when a Mandos server is found */
520
521
static int start_mandos_communication(const char *ip, uint16_t port,
521
522
AvahiIfIndex if_index,
524
int ret, tcp_sd = -1;
526
527
struct sockaddr_in in;
561
566
tcp_sd = socket(pf, SOCK_STREAM, 0);
563
568
perror("socket");
567
577
memset(&to, 0, sizeof(to));
568
578
if(af == AF_INET6){
569
to.in6.sin6_family = (uint16_t)af;
579
to.in6.sin6_family = (sa_family_t)af;
570
580
ret = inet_pton(af, ip, &to.in6.sin6_addr);
571
581
} else { /* IPv4 */
572
582
to.in.sin_family = (sa_family_t)af;
591
603
if(if_index == AVAHI_IF_UNSPEC){
592
604
fprintf(stderr, "An IPv6 link-local address is incomplete"
593
605
" without a network interface\n");
596
609
/* Set the network interface number as scope */
597
610
to.in6.sin6_scope_id = (uint32_t)if_index;
672
702
fprintf(stderr, "Establishing TLS session with %s\n", ip);
675
709
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
678
716
ret = gnutls_handshake(session);
679
720
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
681
722
if(ret != GNUTLS_E_SUCCESS){
716
766
case GNUTLS_E_REHANDSHAKE:
718
768
ret = gnutls_handshake(session);
719
773
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
721
775
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
740
794
fprintf(stderr, "Closing TLS session\n");
743
801
gnutls_bye(session, GNUTLS_SHUT_RDWR);
745
807
if(buffer_length > 0){
746
808
decrypted_buffer_size = pgp_packet_decrypt(buffer,
749
811
if(decrypted_buffer_size >= 0){
751
813
while(written < (size_t) decrypted_buffer_size){
752
818
ret = (int)fwrite(decrypted_buffer + written, 1,
753
819
(size_t)decrypted_buffer_size - written,
880
sig_atomic_t quit_now = 0;
882
959
/* stop main loop after sigterm has been called */
883
static void handle_sigterm(__attribute__((unused)) int sig){
960
static void handle_sigterm(int sig){
965
signal_received = sig;
888
966
int old_errno = errno;
889
967
if(mc.simple_poll != NULL){
890
968
avahi_simple_poll_quit(mc.simple_poll);
1050
1129
exitcode = EXIT_FAILURE;
1053
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1055
perror("sigaction");
1056
exitcode = EXIT_FAILURE;
1132
/* Need to check if the handler is SIG_IGN before handling:
1133
| [[info:libc:Initial Signal Actions]] |
1134
| [[info:libc:Basic Signal Handling]] |
1136
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1138
perror("sigaction");
1139
return EXIT_FAILURE;
1141
if(old_sigterm_action.sa_handler != SIG_IGN){
1142
ret = sigaction(SIGINT, &sigterm_action, NULL);
1144
perror("sigaction");
1145
exitcode = EXIT_FAILURE;
1149
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1151
perror("sigaction");
1152
return EXIT_FAILURE;
1154
if(old_sigterm_action.sa_handler != SIG_IGN){
1155
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1157
perror("sigaction");
1158
exitcode = EXIT_FAILURE;
1162
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1164
perror("sigaction");
1165
return EXIT_FAILURE;
1167
if(old_sigterm_action.sa_handler != SIG_IGN){
1168
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1170
perror("sigaction");
1171
exitcode = EXIT_FAILURE;
1060
1176
/* If the interface is down, bring it up */
1061
1177
if(interface[0] != '\0'){
1178
if_index = (AvahiIfIndex) if_nametoindex(interface);
1180
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1181
exitcode = EXIT_FAILURE;
1062
1189
#ifdef __linux__
1063
1190
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1064
1191
messages to mess up the prompt */
1102
1229
if((network.ifr_flags & IFF_UP) == 0){
1103
1230
network.ifr_flags |= IFF_UP;
1231
take_down_interface = true;
1104
1232
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1234
take_down_interface = false;
1106
1235
perror("ioctl SIOCSIFFLAGS");
1107
1236
exitcode = EXIT_FAILURE;
1108
1237
#ifdef __linux__
1168
1308
gnutls_initialized = true;
1315
tempdir_created = true;
1171
1316
if(mkdtemp(tempdir) == NULL){
1317
tempdir_created = false;
1172
1318
perror("mkdtemp");
1175
tempdir_created = true;
1177
1326
if(not init_gpgme(pubkey, seckey, tempdir)){
1178
1327
fprintf(stderr, "init_gpgme failed\n");
1182
1331
gpgme_initialized = true;
1185
if(interface[0] != '\0'){
1186
if_index = (AvahiIfIndex) if_nametoindex(interface);
1188
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1189
exitcode = EXIT_FAILURE;
1194
1338
if(connect_to != NULL){
1257
1424
/* Create the Avahi service browser */
1258
1425
sb = avahi_s_service_browser_new(mc.server, if_index,
1259
1426
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1299
1470
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));
1302
1491
/* Removes the temp directory used by GPGME */
1303
1492
if(tempdir_created){