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, sig_atomic_t,
83
sigaction(), SIGTERM, sigaction,
87
87
#include <sys/klog.h> /* klogctl() */
310
310
gpgme_recipient_t recipient;
311
311
recipient = result->recipients;
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;
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;
514
516
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
515
517
__attribute__((unused)) const char *txt){}
517
sig_atomic_t quit_now = 0;
518
int signal_received = 0;
520
519
/* Called when a Mandos server is found */
521
520
static int start_mandos_communication(const char *ip, uint16_t port,
522
521
AvahiIfIndex if_index,
524
int ret, tcp_sd = -1;
527
526
struct sockaddr_in in;
531
530
char *decrypted_buffer;
532
531
size_t buffer_length = 0;
533
532
size_t buffer_capacity = 0;
533
ssize_t decrypted_buffer_size;
536
536
gnutls_session_t session;
537
537
int pf; /* Protocol family */
565
561
tcp_sd = socket(pf, SOCK_STREAM, 0);
567
563
perror("socket");
576
567
memset(&to, 0, sizeof(to));
577
568
if(af == AF_INET6){
578
to.in6.sin6_family = (sa_family_t)af;
569
to.in6.sin6_family = (uint16_t)af;
579
570
ret = inet_pton(af, ip, &to.in6.sin6_addr);
580
571
} else { /* IPv4 */
581
572
to.in.sin_family = (sa_family_t)af;
602
591
if(if_index == AVAHI_IF_UNSPEC){
603
592
fprintf(stderr, "An IPv6 link-local address is incomplete"
604
593
" without a network interface\n");
608
596
/* Set the network interface number as scope */
609
597
to.in6.sin6_scope_id = (uint32_t)if_index;
701
672
fprintf(stderr, "Establishing TLS session with %s\n", ip);
708
675
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
715
678
ret = gnutls_handshake(session);
719
679
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
721
681
if(ret != GNUTLS_E_SUCCESS){
763
714
case GNUTLS_E_AGAIN:
765
716
case GNUTLS_E_REHANDSHAKE:
767
718
ret = gnutls_handshake(session);
772
719
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
774
721
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
793
740
fprintf(stderr, "Closing TLS session\n");
800
743
gnutls_bye(session, GNUTLS_SHUT_RDWR);
806
745
if(buffer_length > 0){
807
ssize_t decrypted_buffer_size;
808
746
decrypted_buffer_size = pgp_packet_decrypt(buffer,
810
748
&decrypted_buffer);
811
749
if(decrypted_buffer_size >= 0){
814
751
while(written < (size_t) decrypted_buffer_size){
819
752
ret = (int)fwrite(decrypted_buffer + written, 1,
820
753
(size_t)decrypted_buffer_size - written,
880
sig_atomic_t quit_now = 0;
960
882
/* stop main loop after sigterm has been called */
961
static void handle_sigterm(int sig){
883
static void handle_sigterm(__attribute__((unused)) int sig){
966
signal_received = sig;
967
888
int old_errno = errno;
968
889
if(mc.simple_poll != NULL){
969
890
avahi_simple_poll_quit(mc.simple_poll);
1130
1050
exitcode = EXIT_FAILURE;
1133
/* Need to check if the handler is SIG_IGN before handling:
1134
| [[info:libc:Initial Signal Actions]] |
1135
| [[info:libc:Basic Signal Handling]] |
1137
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1139
perror("sigaction");
1140
return EXIT_FAILURE;
1142
if(old_sigterm_action.sa_handler != SIG_IGN){
1143
ret = sigaction(SIGINT, &sigterm_action, NULL);
1145
perror("sigaction");
1146
exitcode = EXIT_FAILURE;
1150
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1152
perror("sigaction");
1153
return EXIT_FAILURE;
1155
if(old_sigterm_action.sa_handler != SIG_IGN){
1156
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1158
perror("sigaction");
1159
exitcode = EXIT_FAILURE;
1163
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1165
perror("sigaction");
1166
return EXIT_FAILURE;
1168
if(old_sigterm_action.sa_handler != SIG_IGN){
1169
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1171
perror("sigaction");
1172
exitcode = EXIT_FAILURE;
1053
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1055
perror("sigaction");
1056
exitcode = EXIT_FAILURE;
1177
1060
/* If the interface is down, bring it up */
1178
1061
if(interface[0] != '\0'){
1179
if_index = (AvahiIfIndex) if_nametoindex(interface);
1181
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1182
exitcode = EXIT_FAILURE;
1190
1062
#ifdef __linux__
1191
1063
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1192
1064
messages to mess up the prompt */
1230
1102
if((network.ifr_flags & IFF_UP) == 0){
1231
1103
network.ifr_flags |= IFF_UP;
1232
take_down_interface = true;
1233
1104
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1235
take_down_interface = false;
1236
1106
perror("ioctl SIOCSIFFLAGS");
1237
1107
exitcode = EXIT_FAILURE;
1238
1108
#ifdef __linux__
1309
1168
gnutls_initialized = true;
1316
tempdir_created = true;
1317
1171
if(mkdtemp(tempdir) == NULL){
1318
tempdir_created = false;
1319
1172
perror("mkdtemp");
1175
tempdir_created = true;
1327
1177
if(not init_gpgme(pubkey, seckey, tempdir)){
1328
1178
fprintf(stderr, "init_gpgme failed\n");
1332
1182
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;
1339
1194
if(connect_to != NULL){
1425
1257
/* Create the Avahi service browser */
1426
1258
sb = avahi_s_service_browser_new(mc.server, if_index,
1427
1259
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1471
1299
gpgme_release(mc.ctx);
1474
/* Take down the network interface */
1475
if(take_down_interface){
1476
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1478
perror("ioctl SIOCGIFFLAGS");
1479
} else if(network.ifr_flags & IFF_UP) {
1480
network.ifr_flags &= ~IFF_UP; /* clear flag */
1481
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1483
perror("ioctl SIOCSIFFLAGS");
1486
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1492
1302
/* Removes the temp directory used by GPGME */
1493
1303
if(tempdir_created){