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;
530
531
char *decrypted_buffer;
531
532
size_t buffer_length = 0;
532
533
size_t buffer_capacity = 0;
533
ssize_t decrypted_buffer_size;
536
536
gnutls_session_t session;
537
537
int pf; /* Protocol family */
591
602
if(if_index == AVAHI_IF_UNSPEC){
592
603
fprintf(stderr, "An IPv6 link-local address is incomplete"
593
604
" without a network interface\n");
596
608
/* Set the network interface number as scope */
597
609
to.in6.sin6_scope_id = (uint32_t)if_index;
672
701
fprintf(stderr, "Establishing TLS session with %s\n", ip);
675
708
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
678
715
ret = gnutls_handshake(session);
679
719
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
681
721
if(ret != GNUTLS_E_SUCCESS){
714
763
case GNUTLS_E_AGAIN:
716
765
case GNUTLS_E_REHANDSHAKE:
718
767
ret = gnutls_handshake(session);
719
772
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
721
774
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
740
793
fprintf(stderr, "Closing TLS session\n");
743
800
gnutls_bye(session, GNUTLS_SHUT_RDWR);
745
806
if(buffer_length > 0){
807
ssize_t decrypted_buffer_size;
746
808
decrypted_buffer_size = pgp_packet_decrypt(buffer,
748
810
&decrypted_buffer);
749
811
if(decrypted_buffer_size >= 0){
751
814
while(written < (size_t) decrypted_buffer_size){
752
819
ret = (int)fwrite(decrypted_buffer + written, 1,
753
820
(size_t)decrypted_buffer_size - written,
880
sig_atomic_t quit_now = 0;
882
960
/* stop main loop after sigterm has been called */
883
static void handle_sigterm(__attribute__((unused)) int sig){
961
static void handle_sigterm(int sig){
966
signal_received = sig;
888
967
int old_errno = errno;
889
968
if(mc.simple_poll != NULL){
890
969
avahi_simple_poll_quit(mc.simple_poll);
1050
1130
exitcode = EXIT_FAILURE;
1053
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1055
perror("sigaction");
1056
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;
1060
1177
/* If the interface is down, bring it up */
1061
1178
if(interface[0] != '\0'){
1179
if_index = (AvahiIfIndex) if_nametoindex(interface);
1181
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1182
exitcode = EXIT_FAILURE;
1062
1190
#ifdef __linux__
1063
1191
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1064
1192
messages to mess up the prompt */
1102
1230
if((network.ifr_flags & IFF_UP) == 0){
1103
1231
network.ifr_flags |= IFF_UP;
1232
take_down_interface = true;
1104
1233
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1235
take_down_interface = false;
1106
1236
perror("ioctl SIOCSIFFLAGS");
1107
1237
exitcode = EXIT_FAILURE;
1108
1238
#ifdef __linux__
1168
1309
gnutls_initialized = true;
1316
tempdir_created = true;
1171
1317
if(mkdtemp(tempdir) == NULL){
1318
tempdir_created = false;
1172
1319
perror("mkdtemp");
1175
tempdir_created = true;
1177
1327
if(not init_gpgme(pubkey, seckey, tempdir)){
1178
1328
fprintf(stderr, "init_gpgme failed\n");
1182
1332
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
1339
if(connect_to != NULL){
1257
1425
/* Create the Avahi service browser */
1258
1426
sb = avahi_s_service_browser_new(mc.server, if_index,
1259
1427
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1299
1471
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));
1302
1492
/* Removes the temp directory used by GPGME */
1303
1493
if(tempdir_created){