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() */
514
514
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
515
515
__attribute__((unused)) const char *txt){}
517
sig_atomic_t quit_now = 0;
518
int signal_received = 0;
520
517
/* Called when a Mandos server is found */
521
518
static int start_mandos_communication(const char *ip, uint16_t port,
522
519
AvahiIfIndex if_index,
524
int ret, tcp_sd = -1;
527
524
struct sockaddr_in in;
603
589
if(if_index == AVAHI_IF_UNSPEC){
604
590
fprintf(stderr, "An IPv6 link-local address is incomplete"
605
591
" without a network interface\n");
609
594
/* Set the network interface number as scope */
610
595
to.in6.sin6_scope_id = (uint32_t)if_index;
702
670
fprintf(stderr, "Establishing TLS session with %s\n", ip);
709
673
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
716
676
ret = gnutls_handshake(session);
720
677
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
722
679
if(ret != GNUTLS_E_SUCCESS){
766
714
case GNUTLS_E_REHANDSHAKE:
768
716
ret = gnutls_handshake(session);
773
717
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
775
719
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
794
738
fprintf(stderr, "Closing TLS session\n");
801
741
gnutls_bye(session, GNUTLS_SHUT_RDWR);
807
743
if(buffer_length > 0){
808
744
decrypted_buffer_size = pgp_packet_decrypt(buffer,
811
747
if(decrypted_buffer_size >= 0){
813
749
while(written < (size_t) decrypted_buffer_size){
818
750
ret = (int)fwrite(decrypted_buffer + written, 1,
819
751
(size_t)decrypted_buffer_size - written,
878
sig_atomic_t quit_now = 0;
959
880
/* stop main loop after sigterm has been called */
960
static void handle_sigterm(int sig){
881
static void handle_sigterm(__attribute__((unused)) int sig){
965
signal_received = sig;
966
886
int old_errno = errno;
967
887
if(mc.simple_poll != NULL){
968
888
avahi_simple_poll_quit(mc.simple_poll);
1129
1049
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;
1052
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1054
perror("sigaction");
1055
exitcode = EXIT_FAILURE;
1176
1059
/* If the interface is down, bring it up */
1177
1060
if(interface[0] != '\0'){
1178
if_index = (AvahiIfIndex) if_nametoindex(interface);
1180
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1181
exitcode = EXIT_FAILURE;
1189
1061
#ifdef __linux__
1190
1062
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1191
1063
messages to mess up the prompt */
1229
1101
if((network.ifr_flags & IFF_UP) == 0){
1230
1102
network.ifr_flags |= IFF_UP;
1231
take_down_interface = true;
1232
1103
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1234
take_down_interface = false;
1235
1105
perror("ioctl SIOCSIFFLAGS");
1236
1106
exitcode = EXIT_FAILURE;
1237
1107
#ifdef __linux__
1308
1170
gnutls_initialized = true;
1315
tempdir_created = true;
1316
1173
if(mkdtemp(tempdir) == NULL){
1317
tempdir_created = false;
1318
1174
perror("mkdtemp");
1177
tempdir_created = true;
1326
1179
if(not init_gpgme(pubkey, seckey, tempdir)){
1327
1180
fprintf(stderr, "init_gpgme failed\n");
1331
1184
gpgme_initialized = true;
1187
if(interface[0] != '\0'){
1188
if_index = (AvahiIfIndex) if_nametoindex(interface);
1190
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1191
exitcode = EXIT_FAILURE;
1338
1196
if(connect_to != NULL){
1424
1259
/* Create the Avahi service browser */
1425
1260
sb = avahi_s_service_browser_new(mc.server, if_index,
1426
1261
AVAHI_PROTO_UNSPEC, "_mandos._tcp",