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