43
43
stdout, ferror(), remove() */
44
44
#include <stdint.h> /* uint16_t, uint32_t */
45
45
#include <stddef.h> /* NULL, size_t, ssize_t */
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
47
srand(), strtof(), abort() */
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
48
48
#include <stdbool.h> /* bool, false, true */
49
49
#include <string.h> /* memset(), strcmp(), strlen(),
50
50
strerror(), asprintf(), strcpy() */
82
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
83
sigaction(), SIGTERM, sig_atomic_t,
85
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
86
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
87
89
#include <sys/klog.h> /* klogctl() */
615
628
if(if_index == AVAHI_IF_UNSPEC){
616
629
fprintf(stderr, "An IPv6 link-local address is incomplete"
617
630
" without a network interface\n");
620
634
/* Set the network interface number as scope */
827
863
(size_t)decrypted_buffer_size - written,
829
865
if(ret == 0 and ferror(stdout)){
831
868
fprintf(stderr, "Error writing encrypted data: %s\n",
832
869
strerror(errno));
836
874
written += (size_t)ret;
1056
1102
.arg = "SECONDS",
1057
1103
.doc = "Maximum delay to wait for interface startup",
1106
* These reproduce what we would get without ARGP_NO_HELP
1108
{ .name = "help", .key = '?',
1109
.doc = "Give this help list", .group = -1 },
1110
{ .name = "usage", .key = -3,
1111
.doc = "Give a short usage message", .group = -1 },
1112
{ .name = "version", .key = 'V',
1113
.doc = "Print program version", .group = -1 },
1059
1114
{ .name = NULL }
1062
1117
error_t parse_opt(int key, char *arg,
1063
1118
struct argp_state *state){
1065
1121
case 128: /* --debug */
1082
1138
tmpmax = strtoimax(arg, &tmp, 10);
1083
1139
if(errno != 0 or tmp == arg or *tmp != '\0'
1084
1140
or tmpmax != (typeof(mc.dh_bits))tmpmax){
1085
fprintf(stderr, "Bad number of DH bits\n");
1141
argp_error(state, "Bad number of DH bits");
1088
1143
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
1095
1150
delay = strtof(arg, &tmp);
1096
1151
if(errno != 0 or tmp == arg or *tmp != '\0'){
1097
fprintf(stderr, "Bad delay\n");
1152
argp_error(state, "Bad delay");
1156
* These reproduce what we would get without ARGP_NO_HELP
1158
case '?': /* --help */
1159
argp_state_help(state, state->out_stream,
1160
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
1161
& ~(unsigned int)ARGP_HELP_EXIT_OK);
1162
case -3: /* --usage */
1163
argp_state_help(state, state->out_stream,
1164
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1165
case 'V': /* --version */
1166
fprintf(state->out_stream, "%s\n", argp_program_version);
1167
exit(argp_err_exit_status);
1106
1170
return ARGP_ERR_UNKNOWN;
1111
1175
struct argp argp = { .options = options, .parser = parse_opt,
1112
1176
.args_doc = "",
1113
1177
.doc = "Mandos client -- Get and decrypt"
1114
1178
" passwords from a Mandos server" };
1115
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1116
if(ret == ARGP_ERR_UNKNOWN){
1117
fprintf(stderr, "Unknown error while parsing arguments\n");
1118
exitcode = EXIT_FAILURE;
1179
ret = argp_parse(&argp, argc, argv,
1180
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
1187
perror("argp_parse");
1188
exitcode = EX_OSERR;
1191
exitcode = EX_USAGE;
1131
1204
mc.simple_poll = avahi_simple_poll_new();
1132
1205
if(mc.simple_poll == NULL){
1133
1206
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1134
exitcode = EXIT_FAILURE;
1207
exitcode = EX_UNAVAILABLE;
1139
1212
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1141
1214
perror("sigaddset");
1142
exitcode = EXIT_FAILURE;
1215
exitcode = EX_OSERR;
1145
1218
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1147
1220
perror("sigaddset");
1148
exitcode = EXIT_FAILURE;
1221
exitcode = EX_OSERR;
1151
1224
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1153
1226
perror("sigaddset");
1154
exitcode = EXIT_FAILURE;
1227
exitcode = EX_OSERR;
1157
1230
/* Need to check if the handler is SIG_IGN before handling:
1161
1234
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1163
1236
perror("sigaction");
1164
return EXIT_FAILURE;
1166
1239
if(old_sigterm_action.sa_handler != SIG_IGN){
1167
1240
ret = sigaction(SIGINT, &sigterm_action, NULL);
1169
1242
perror("sigaction");
1170
exitcode = EXIT_FAILURE;
1243
exitcode = EX_OSERR;
1174
1247
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1176
1249
perror("sigaction");
1177
return EXIT_FAILURE;
1179
1252
if(old_sigterm_action.sa_handler != SIG_IGN){
1180
1253
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1182
1255
perror("sigaction");
1183
exitcode = EXIT_FAILURE;
1256
exitcode = EX_OSERR;
1187
1260
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1189
1262
perror("sigaction");
1190
return EXIT_FAILURE;
1192
1265
if(old_sigterm_action.sa_handler != SIG_IGN){
1193
1266
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1195
1268
perror("sigaction");
1196
exitcode = EXIT_FAILURE;
1269
exitcode = EX_OSERR;
1221
1294
#ifdef __linux__
1222
1295
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1223
messages to mess up the prompt */
1296
messages about the network interface to mess up the prompt */
1224
1297
ret = klogctl(8, NULL, 5);
1225
1298
bool restore_loglevel = true;
1349
1422
ret = init_gnutls_global(pubkey, seckey);
1351
1424
fprintf(stderr, "init_gnutls_global failed\n");
1352
exitcode = EXIT_FAILURE;
1425
exitcode = EX_UNAVAILABLE;
1355
1428
gnutls_initialized = true;
1373
1446
if(not init_gpgme(pubkey, seckey, tempdir)){
1374
1447
fprintf(stderr, "init_gpgme failed\n");
1375
exitcode = EXIT_FAILURE;
1448
exitcode = EX_UNAVAILABLE;
1378
1451
gpgme_initialized = true;
1531
1622
perror("ioctl SIOCGIFFLAGS");
1532
1623
} else if(network.ifr_flags & IFF_UP) {
1533
network.ifr_flags &= ~IFF_UP; /* clear flag */
1624
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1534
1625
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1536
1627
perror("ioctl SIOCSIFFLAGS");