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,
878
sig_atomic_t quit_now = 0;
885
880
/* stop main loop after sigterm has been called */
886
static void handle_sigterm(int sig){
881
static void handle_sigterm(__attribute__((unused)) int sig){
891
signal_received = sig;
892
886
int old_errno = errno;
893
887
if(mc.simple_poll != NULL){
894
888
avahi_simple_poll_quit(mc.simple_poll);
1055
1048
exitcode = EXIT_FAILURE;
1058
/* Need to check if the handler is SIG_IGN before handling:
1059
| [[info:libc:Initial Signal Actions]] |
1060
| [[info:libc:Basic Signal Handling]] |
1062
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1064
perror("sigaction");
1065
return EXIT_FAILURE;
1067
if(old_sigterm_action.sa_handler != SIG_IGN){
1068
ret = sigaction(SIGINT, &sigterm_action, NULL);
1070
perror("sigaction");
1071
exitcode = EXIT_FAILURE;
1075
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1077
perror("sigaction");
1078
return EXIT_FAILURE;
1080
if(old_sigterm_action.sa_handler != SIG_IGN){
1081
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1083
perror("sigaction");
1084
exitcode = EXIT_FAILURE;
1088
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1090
perror("sigaction");
1091
return EXIT_FAILURE;
1093
if(old_sigterm_action.sa_handler != SIG_IGN){
1094
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1096
perror("sigaction");
1097
exitcode = EXIT_FAILURE;
1051
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1053
perror("sigaction");
1054
exitcode = EXIT_FAILURE;
1102
1058
/* If the interface is down, bring it up */
1103
1059
if(interface[0] != '\0'){
1104
if_index = (AvahiIfIndex) if_nametoindex(interface);
1106
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1107
exitcode = EXIT_FAILURE;
1115
1060
#ifdef __linux__
1116
1061
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1117
1062
messages to mess up the prompt */
1155
1100
if((network.ifr_flags & IFF_UP) == 0){
1156
1101
network.ifr_flags |= IFF_UP;
1157
take_down_interface = true;
1158
1102
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1160
take_down_interface = false;
1161
1104
perror("ioctl SIOCSIFFLAGS");
1162
1105
exitcode = EXIT_FAILURE;
1163
1106
#ifdef __linux__
1234
1166
gnutls_initialized = true;
1241
tempdir_created = true;
1242
1169
if(mkdtemp(tempdir) == NULL){
1243
tempdir_created = false;
1244
1170
perror("mkdtemp");
1173
tempdir_created = true;
1252
1175
if(not init_gpgme(pubkey, seckey, tempdir)){
1253
1176
fprintf(stderr, "init_gpgme failed\n");
1257
1180
gpgme_initialized = true;
1183
if(interface[0] != '\0'){
1184
if_index = (AvahiIfIndex) if_nametoindex(interface);
1186
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1187
exitcode = EXIT_FAILURE;
1264
1192
if(connect_to != NULL){
1350
1255
/* Create the Avahi service browser */
1351
1256
sb = avahi_s_service_browser_new(mc.server, if_index,
1352
1257
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1396
1297
gpgme_release(mc.ctx);
1399
/* Take down the network interface */
1400
if(take_down_interface){
1401
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1403
perror("ioctl SIOCGIFFLAGS");
1404
} else if(network.ifr_flags & IFF_UP) {
1405
network.ifr_flags &= ~IFF_UP; /* clear flag */
1406
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1408
perror("ioctl SIOCSIFFLAGS");
1411
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1417
1300
/* Removes the temp directory used by GPGME */
1418
1301
if(tempdir_created){