32
31
/* Needed by GPGME, specifically gpgme_data_seek() */
33
#ifndef _LARGEFILE_SOURCE
34
32
#define _LARGEFILE_SOURCE
36
#ifndef _FILE_OFFSET_BITS
37
33
#define _FILE_OFFSET_BITS 64
40
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
42
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror(), remove() */
44
39
#include <stdint.h> /* uint16_t, uint32_t */
45
40
#include <stddef.h> /* NULL, size_t, ssize_t */
46
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
48
#include <stdbool.h> /* bool, false, true */
43
#include <stdbool.h> /* bool, true */
49
44
#include <string.h> /* memset(), strcmp(), strlen(),
50
45
strerror(), asprintf(), strcpy() */
51
#include <sys/ioctl.h> /* ioctl */
46
#include <sys/ioctl.h> /* ioctl */
52
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
53
48
sockaddr_in6, PF_INET6,
54
SOCK_STREAM, uid_t, gid_t, open(),
56
#include <sys/stat.h> /* open() */
49
SOCK_STREAM, INET6_ADDRSTRLEN,
51
#include <inttypes.h> /* PRIu16 */
57
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
inet_pton(), connect() */
59
#include <fcntl.h> /* open() */
60
#include <dirent.h> /* opendir(), struct dirent, readdir()
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
53
struct in6_addr, inet_pton(),
64
55
#include <assert.h> /* assert() */
65
56
#include <errno.h> /* perror(), errno */
66
#include <time.h> /* nanosleep(), time() */
57
#include <time.h> /* time() */
67
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
68
59
SIOCSIFFLAGS, if_indextoname(),
69
60
if_nametoindex(), IF_NAMESIZE */
70
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
71
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
73
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
74
62
getuid(), getgid(), setuid(),
64
#include <netinet/in.h>
76
65
#include <arpa/inet.h> /* inet_pton(), htons */
77
#include <iso646.h> /* not, or, and */
66
#include <iso646.h> /* not, and */
78
67
#include <argp.h> /* struct argp_option, error_t, struct
79
68
argp_state, struct argp,
80
69
argp_parse(), ARGP_KEY_ARG,
81
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
sigaction(), SIGTERM, sig_atomic_t,
87
#include <sys/klog.h> /* klogctl() */
88
#endif /* __linux__ */
91
73
/* All Avahi types, constants and functions
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
165
static bool init_gpgme(const char *seckey,
166
const char *pubkey, const char *tempdir){
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
141
const char *homedir){
142
gpgme_data_t dh_crypto, dh_plain;
168
144
gpgme_error_t rc;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
169
148
gpgme_engine_info_t engine_info;
173
* Helper function to insert pub and seckey to the engine keyring.
175
bool import_key(const char *filename){
177
gpgme_data_t pgp_data;
179
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
185
rc = gpgme_data_new_from_fd(&pgp_data, fd);
186
if(rc != GPG_ERR_NO_ERROR){
187
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
188
gpgme_strsource(rc), gpgme_strerror(rc));
192
rc = gpgme_op_import(mc.ctx, pgp_data);
193
if(rc != GPG_ERR_NO_ERROR){
194
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
195
gpgme_strsource(rc), gpgme_strerror(rc));
199
ret = (int)TEMP_FAILURE_RETRY(close(fd));
203
gpgme_data_release(pgp_data);
208
fprintf(stderr, "Initializing GPGME\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
212
155
gpgme_check_version(NULL);
213
156
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
214
if(rc != GPG_ERR_NO_ERROR){
157
if (rc != GPG_ERR_NO_ERROR){
215
158
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
216
159
gpgme_strsource(rc), gpgme_strerror(rc));
220
/* Set GPGME home directory for the OpenPGP engine only */
221
rc = gpgme_get_engine_info(&engine_info);
222
if(rc != GPG_ERR_NO_ERROR){
163
/* Set GPGME home directory for the OpenPGP engine only */
164
rc = gpgme_get_engine_info (&engine_info);
165
if (rc != GPG_ERR_NO_ERROR){
223
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
224
167
gpgme_strsource(rc), gpgme_strerror(rc));
227
170
while(engine_info != NULL){
228
171
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
229
172
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
230
engine_info->file_name, tempdir);
173
engine_info->file_name, homedir);
233
176
engine_info = engine_info->next;
235
178
if(engine_info == NULL){
236
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
240
/* Create new GPGME "context" */
241
rc = gpgme_new(&(mc.ctx));
242
if(rc != GPG_ERR_NO_ERROR){
243
fprintf(stderr, "bad gpgme_new: %s: %s\n",
244
gpgme_strsource(rc), gpgme_strerror(rc));
248
if(not import_key(pubkey) or not import_key(seckey)){
256
* Decrypt OpenPGP data.
257
* Returns -1 on error
259
static ssize_t pgp_packet_decrypt(const char *cryptotext,
262
gpgme_data_t dh_crypto, dh_plain;
265
size_t plaintext_capacity = 0;
266
ssize_t plaintext_length = 0;
269
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
272
183
/* Create new GPGME data buffer from memory cryptotext */
273
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
275
if(rc != GPG_ERR_NO_ERROR){
186
if (rc != GPG_ERR_NO_ERROR){
276
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
277
188
gpgme_strsource(rc), gpgme_strerror(rc));
418
341
/* OpenPGP credentials */
419
gnutls_certificate_allocate_credentials(&mc.cred);
420
if(ret != GNUTLS_E_SUCCESS){
421
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
425
safer_gnutls_strerror(ret));
426
gnutls_global_deinit();
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n",
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
431
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
432
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
436
356
ret = gnutls_certificate_set_openpgp_key_file
437
(mc.cred, pubkeyfilename, seckeyfilename,
357
(mc->cred, pubkeyfilename, seckeyfilename,
438
358
GNUTLS_OPENPGP_FMT_BASE64);
439
if(ret != GNUTLS_E_SUCCESS){
359
if (ret != GNUTLS_E_SUCCESS) {
441
361
"Error[%d] while reading the OpenPGP key pair ('%s',"
442
362
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
443
fprintf(stderr, "The GnuTLS error is: %s\n",
363
fprintf(stdout, "The GnuTLS error is: %s\n",
444
364
safer_gnutls_strerror(ret));
448
368
/* GnuTLS server initialization */
449
ret = gnutls_dh_params_init(&mc.dh_params);
450
if(ret != GNUTLS_E_SUCCESS){
451
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
452
" %s\n", safer_gnutls_strerror(ret));
455
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
456
if(ret != GNUTLS_E_SUCCESS){
457
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
458
safer_gnutls_strerror(ret));
462
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
369
ret = gnutls_dh_params_init(&mc->dh_params);
370
if (ret != GNUTLS_E_SUCCESS) {
371
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
372
" %s\n", safer_gnutls_strerror(ret));
375
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
376
if (ret != GNUTLS_E_SUCCESS) {
377
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
378
safer_gnutls_strerror(ret));
382
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
468
gnutls_certificate_free_credentials(mc.cred);
388
gnutls_certificate_free_credentials(mc->cred);
469
389
gnutls_global_deinit();
470
gnutls_dh_params_deinit(mc.dh_params);
474
static int init_gnutls_session(gnutls_session_t *session){
394
static int init_gnutls_session(mandos_context *mc,
395
gnutls_session_t *session){
476
397
/* GnuTLS session creation */
477
398
ret = gnutls_init(session, GNUTLS_SERVER);
478
if(ret != GNUTLS_E_SUCCESS){
399
if (ret != GNUTLS_E_SUCCESS){
479
400
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
480
401
safer_gnutls_strerror(ret));
485
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
486
if(ret != GNUTLS_E_SUCCESS){
406
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
407
if (ret != GNUTLS_E_SUCCESS) {
487
408
fprintf(stderr, "Syntax error at: %s\n", err);
488
409
fprintf(stderr, "GnuTLS error: %s\n",
489
410
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
411
gnutls_deinit (*session);
495
416
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
497
if(ret != GNUTLS_E_SUCCESS){
418
if (ret != GNUTLS_E_SUCCESS) {
498
419
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
499
420
safer_gnutls_strerror(ret));
500
gnutls_deinit(*session);
421
gnutls_deinit (*session);
504
425
/* ignore client certificate if any. */
505
gnutls_certificate_server_set_request(*session,
426
gnutls_certificate_server_set_request (*session,
508
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
429
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
885
/* stop main loop after sigterm has been called */
886
static void handle_sigterm(int sig){
891
signal_received = sig;
892
int old_errno = errno;
893
if(mc.simple_poll != NULL){
894
avahi_simple_poll_quit(mc.simple_poll);
746
/* Combines file name and path and returns the malloced new
747
string. some sane checks could/should be added */
748
static char *combinepath(const char *first, const char *second){
750
int ret = asprintf(&tmp, "%s/%s", first, second);
899
758
int main(int argc, char *argv[]){
900
AvahiSServiceBrowser *sb = NULL;
905
int exitcode = EXIT_SUCCESS;
906
const char *interface = "eth0";
907
struct ifreq network;
909
bool take_down_interface = false;
912
char *connect_to = NULL;
913
char tempdir[] = "/tmp/mandosXXXXXX";
914
bool tempdir_created = false;
915
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
916
const char *seckey = PATHDIR "/" SECKEY;
917
const char *pubkey = PATHDIR "/" PUBKEY;
919
bool gnutls_initialized = false;
920
bool gpgme_initialized = false;
923
struct sigaction old_sigterm_action;
924
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
927
struct argp_option options[] = {
928
{ .name = "debug", .key = 128,
929
.doc = "Debug mode", .group = 3 },
930
{ .name = "connect", .key = 'c',
931
.arg = "ADDRESS:PORT",
932
.doc = "Connect directly to a specific Mandos server",
934
{ .name = "interface", .key = 'i',
936
.doc = "Network interface that will be used to search for"
939
{ .name = "seckey", .key = 's',
941
.doc = "OpenPGP secret key file base name",
943
{ .name = "pubkey", .key = 'p',
945
.doc = "OpenPGP public key file base name",
947
{ .name = "dh-bits", .key = 129,
949
.doc = "Bit length of the prime number used in the"
950
" Diffie-Hellman key exchange",
952
{ .name = "priority", .key = 130,
954
.doc = "GnuTLS priority string for the TLS handshake",
956
{ .name = "delay", .key = 131,
958
.doc = "Maximum delay to wait for interface startup",
963
error_t parse_opt(int key, char *arg,
964
struct argp_state *state){
966
case 128: /* --debug */
969
case 'c': /* --connect */
972
case 'i': /* --interface */
975
case 's': /* --seckey */
978
case 'p': /* --pubkey */
981
case 129: /* --dh-bits */
983
tmpmax = strtoimax(arg, &tmp, 10);
984
if(errno != 0 or tmp == arg or *tmp != '\0'
985
or tmpmax != (typeof(mc.dh_bits))tmpmax){
986
fprintf(stderr, "Bad number of DH bits\n");
989
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
991
case 130: /* --priority */
994
case 131: /* --delay */
996
delay = strtof(arg, &tmp);
997
if(errno != 0 or tmp == arg or *tmp != '\0'){
998
fprintf(stderr, "Bad delay\n");
1007
return ARGP_ERR_UNKNOWN;
1012
struct argp argp = { .options = options, .parser = parse_opt,
1014
.doc = "Mandos client -- Get and decrypt"
1015
" passwords from a Mandos server" };
1016
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1017
if(ret == ARGP_ERR_UNKNOWN){
1018
fprintf(stderr, "Unknown error while parsing arguments\n");
1019
exitcode = EXIT_FAILURE;
1025
avahi_set_log_function(empty_log);
1028
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1029
from the signal handler */
1030
/* Initialize the pseudo-RNG for Avahi */
1031
srand((unsigned int) time(NULL));
1032
mc.simple_poll = avahi_simple_poll_new();
1033
if(mc.simple_poll == NULL){
1034
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1035
exitcode = EXIT_FAILURE;
1039
sigemptyset(&sigterm_action.sa_mask);
1040
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1042
perror("sigaddset");
1043
exitcode = EXIT_FAILURE;
1046
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1048
perror("sigaddset");
1049
exitcode = EXIT_FAILURE;
1052
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1054
perror("sigaddset");
1055
exitcode = EXIT_FAILURE;
1058
ret = sigaction(SIGINT, &sigterm_action, &old_sigterm_action);
1060
perror("sigaction");
1061
exitcode = EXIT_FAILURE;
1064
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1066
perror("sigaction");
1067
exitcode = EXIT_FAILURE;
1070
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1072
perror("sigaction");
1073
exitcode = EXIT_FAILURE;
1077
/* If the interface is down, bring it up */
1078
if(interface[0] != '\0'){
759
AvahiSServiceBrowser *sb = NULL;
762
int exitcode = EXIT_SUCCESS;
763
const char *interface = "eth0";
764
struct ifreq network;
768
char *connect_to = NULL;
769
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
770
char *pubkeyfilename = NULL;
771
char *seckeyfilename = NULL;
772
const char *pubkeyname = "pubkey.txt";
773
const char *seckeyname = "seckey.txt";
774
mandos_context mc = { .simple_poll = NULL, .server = NULL,
775
.dh_bits = 1024, .priority = "SECURE256"};
776
bool gnutls_initalized = false;
779
struct argp_option options[] = {
780
{ .name = "debug", .key = 128,
781
.doc = "Debug mode", .group = 3 },
782
{ .name = "connect", .key = 'c',
784
.doc = "Connect directly to a sepcified mandos server",
786
{ .name = "interface", .key = 'i',
788
.doc = "Interface that Avahi will conntect through",
790
{ .name = "keydir", .key = 'd',
792
.doc = "Directory where the openpgp keyring is",
794
{ .name = "seckey", .key = 's',
796
.doc = "Secret openpgp key for gnutls authentication",
798
{ .name = "pubkey", .key = 'p',
800
.doc = "Public openpgp key for gnutls authentication",
802
{ .name = "dh-bits", .key = 129,
804
.doc = "dh-bits to use in gnutls communication",
806
{ .name = "priority", .key = 130,
808
.doc = "GNUTLS priority", .group = 1 },
813
error_t parse_opt (int key, char *arg,
814
struct argp_state *state) {
815
/* Get the INPUT argument from `argp_parse', which we know is
816
a pointer to our plugin list pointer. */
838
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
852
return ARGP_ERR_UNKNOWN;
857
struct argp argp = { .options = options, .parser = parse_opt,
859
.doc = "Mandos client -- Get and decrypt"
860
" passwords from mandos server" };
861
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
862
if (ret == ARGP_ERR_UNKNOWN){
863
fprintf(stderr, "Unknown error while parsing arguments\n");
864
exitcode = EXIT_FAILURE;
869
pubkeyfilename = combinepath(keydir, pubkeyname);
870
if (pubkeyfilename == NULL){
871
perror("combinepath");
872
exitcode = EXIT_FAILURE;
876
seckeyfilename = combinepath(keydir, seckeyname);
877
if (seckeyfilename == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
883
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
885
fprintf(stderr, "init_gnutls_global failed\n");
886
exitcode = EXIT_FAILURE;
889
gnutls_initalized = true;
892
/* If the interface is down, bring it up */
894
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
897
exitcode = EXIT_FAILURE;
900
strcpy(network.ifr_name, interface); /* Spurious warning */
901
ret = ioctl(sd, SIOCGIFFLAGS, &network);
903
perror("ioctl SIOCGIFFLAGS");
904
exitcode = EXIT_FAILURE;
907
if((network.ifr_flags & IFF_UP) == 0){
908
network.ifr_flags |= IFF_UP;
909
ret = ioctl(sd, SIOCSIFFLAGS, &network);
911
perror("ioctl SIOCSIFFLAGS");
912
exitcode = EXIT_FAILURE;
1079
932
if_index = (AvahiIfIndex) if_nametoindex(interface);
1080
933
if(if_index == 0){
1081
934
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1082
exitcode = EXIT_FAILURE;
1091
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1092
messages to mess up the prompt */
1093
ret = klogctl(8, NULL, 5);
1094
bool restore_loglevel = true;
1096
restore_loglevel = false;
1099
#endif /* __linux__ */
1101
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1104
exitcode = EXIT_FAILURE;
1106
if(restore_loglevel){
1107
ret = klogctl(7, NULL, 0);
1112
#endif /* __linux__ */
1115
strcpy(network.ifr_name, interface);
1116
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1118
perror("ioctl SIOCGIFFLAGS");
1120
if(restore_loglevel){
1121
ret = klogctl(7, NULL, 0);
1126
#endif /* __linux__ */
1127
exitcode = EXIT_FAILURE;
1130
if((network.ifr_flags & IFF_UP) == 0){
1131
network.ifr_flags |= IFF_UP;
1132
take_down_interface = true;
1133
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1135
take_down_interface = false;
1136
perror("ioctl SIOCSIFFLAGS");
1137
exitcode = EXIT_FAILURE;
1139
if(restore_loglevel){
1140
ret = klogctl(7, NULL, 0);
1145
#endif /* __linux__ */
1149
/* sleep checking until interface is running */
1150
for(int i=0; i < delay * 4; i++){
1151
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1153
perror("ioctl SIOCGIFFLAGS");
1154
} else if(network.ifr_flags & IFF_RUNNING){
1157
struct timespec sleeptime = { .tv_nsec = 250000000 };
1158
ret = nanosleep(&sleeptime, NULL);
1159
if(ret == -1 and errno != EINTR){
1160
perror("nanosleep");
1163
if(not take_down_interface){
1164
/* We won't need the socket anymore */
1165
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1171
if(restore_loglevel){
1172
/* Restores kernel loglevel to default */
1173
ret = klogctl(7, NULL, 0);
1178
#endif /* __linux__ */
1203
ret = init_gnutls_global(pubkey, seckey);
1205
fprintf(stderr, "init_gnutls_global failed\n");
1206
exitcode = EXIT_FAILURE;
1209
gnutls_initialized = true;
1216
tempdir_created = true;
1217
if(mkdtemp(tempdir) == NULL){
1218
tempdir_created = false;
1227
if(not init_gpgme(pubkey, seckey, tempdir)){
1228
fprintf(stderr, "init_gpgme failed\n");
1229
exitcode = EXIT_FAILURE;
1232
gpgme_initialized = true;
1239
if(connect_to != NULL){
1240
/* Connect directly, do not use Zeroconf */
1241
/* (Mainly meant for debugging) */
1242
char *address = strrchr(connect_to, ':');
1243
if(address == NULL){
1244
fprintf(stderr, "No colon in address\n");
1245
exitcode = EXIT_FAILURE;
1255
tmpmax = strtoimax(address+1, &tmp, 10);
1256
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1257
or tmpmax != (uint16_t)tmpmax){
1258
fprintf(stderr, "Bad port number\n");
1259
exitcode = EXIT_FAILURE;
1267
port = (uint16_t)tmpmax;
1269
address = connect_to;
1270
/* Colon in address indicates IPv6 */
1272
if(strchr(address, ':') != NULL){
1282
ret = start_mandos_communication(address, port, if_index, af);
1284
exitcode = EXIT_FAILURE;
1286
exitcode = EXIT_SUCCESS;
1296
AvahiServerConfig config;
1297
/* Do not publish any local Zeroconf records */
1298
avahi_server_config_init(&config);
1299
config.publish_hinfo = 0;
1300
config.publish_addresses = 0;
1301
config.publish_workstation = 0;
1302
config.publish_domain = 0;
1304
/* Allocate a new server */
1305
mc.server = avahi_server_new(avahi_simple_poll_get
1306
(mc.simple_poll), &config, NULL,
1309
/* Free the Avahi configuration data */
1310
avahi_server_config_free(&config);
1313
/* Check if creating the Avahi server object succeeded */
1314
if(mc.server == NULL){
1315
fprintf(stderr, "Failed to create Avahi server: %s\n",
1316
avahi_strerror(error));
1317
exitcode = EXIT_FAILURE;
1325
/* Create the Avahi service browser */
1326
sb = avahi_s_service_browser_new(mc.server, if_index,
1327
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1328
NULL, 0, browse_callback, NULL);
1330
fprintf(stderr, "Failed to create service browser: %s\n",
1331
avahi_strerror(avahi_server_errno(mc.server)));
1332
exitcode = EXIT_FAILURE;
1340
/* Run the main loop */
1343
fprintf(stderr, "Starting Avahi loop search\n");
1346
avahi_simple_poll_loop(mc.simple_poll);
938
if(connect_to != NULL){
939
/* Connect directly, do not use Zeroconf */
940
/* (Mainly meant for debugging) */
941
char *address = strrchr(connect_to, ':');
943
fprintf(stderr, "No colon in address\n");
944
exitcode = EXIT_FAILURE;
948
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
950
perror("Bad port number");
951
exitcode = EXIT_FAILURE;
955
address = connect_to;
956
ret = start_mandos_communication(address, port, if_index, &mc);
958
exitcode = EXIT_FAILURE;
960
exitcode = EXIT_SUCCESS;
966
avahi_set_log_function(empty_log);
969
/* Initialize the pseudo-RNG for Avahi */
970
srand((unsigned int) time(NULL));
972
/* Allocate main Avahi loop object */
973
mc.simple_poll = avahi_simple_poll_new();
974
if (mc.simple_poll == NULL) {
975
fprintf(stderr, "Avahi: Failed to create simple poll"
977
exitcode = EXIT_FAILURE;
982
AvahiServerConfig config;
983
/* Do not publish any local Zeroconf records */
984
avahi_server_config_init(&config);
985
config.publish_hinfo = 0;
986
config.publish_addresses = 0;
987
config.publish_workstation = 0;
988
config.publish_domain = 0;
990
/* Allocate a new server */
991
mc.server = avahi_server_new(avahi_simple_poll_get
992
(mc.simple_poll), &config, NULL,
995
/* Free the Avahi configuration data */
996
avahi_server_config_free(&config);
999
/* Check if creating the Avahi server object succeeded */
1000
if (mc.server == NULL) {
1001
fprintf(stderr, "Failed to create Avahi server: %s\n",
1002
avahi_strerror(error));
1003
exitcode = EXIT_FAILURE;
1007
/* Create the Avahi service browser */
1008
sb = avahi_s_service_browser_new(mc.server, if_index,
1010
"_mandos._tcp", NULL, 0,
1011
browse_callback, &mc);
1013
fprintf(stderr, "Failed to create service browser: %s\n",
1014
avahi_strerror(avahi_server_errno(mc.server)));
1015
exitcode = EXIT_FAILURE;
1019
/* Run the main loop */
1022
fprintf(stderr, "Starting Avahi loop search\n");
1025
avahi_simple_poll_loop(mc.simple_poll);
1351
fprintf(stderr, "%s exiting\n", argv[0]);
1354
/* Cleanup things */
1356
avahi_s_service_browser_free(sb);
1358
if(mc.server != NULL)
1359
avahi_server_free(mc.server);
1361
if(mc.simple_poll != NULL)
1362
avahi_simple_poll_free(mc.simple_poll);
1364
if(gnutls_initialized){
1365
gnutls_certificate_free_credentials(mc.cred);
1366
gnutls_global_deinit();
1367
gnutls_dh_params_deinit(mc.dh_params);
1370
if(gpgme_initialized){
1371
gpgme_release(mc.ctx);
1374
/* Take down the network interface */
1375
if(take_down_interface){
1376
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1378
perror("ioctl SIOCGIFFLAGS");
1379
} else if(network.ifr_flags & IFF_UP) {
1380
network.ifr_flags &= ~IFF_UP; /* clear flag */
1381
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1383
perror("ioctl SIOCSIFFLAGS");
1386
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1392
/* Removes the temp directory used by GPGME */
1393
if(tempdir_created){
1395
struct dirent *direntry;
1396
d = opendir(tempdir);
1398
if(errno != ENOENT){
1403
direntry = readdir(d);
1404
if(direntry == NULL){
1407
/* Skip "." and ".." */
1408
if(direntry->d_name[0] == '.'
1409
and (direntry->d_name[1] == '\0'
1410
or (direntry->d_name[1] == '.'
1411
and direntry->d_name[2] == '\0'))){
1414
char *fullname = NULL;
1415
ret = asprintf(&fullname, "%s/%s", tempdir,
1421
ret = remove(fullname);
1423
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1430
ret = rmdir(tempdir);
1431
if(ret == -1 and errno != ENOENT){
1437
ret = sigaction(signal_received, &old_sigterm_action, NULL);
1439
perror("sigaction");
1441
raise(signal_received);
1030
fprintf(stderr, "%s exiting\n", argv[0]);
1033
/* Cleanup things */
1035
avahi_s_service_browser_free(sb);
1037
if (mc.server != NULL)
1038
avahi_server_free(mc.server);
1040
if (mc.simple_poll != NULL)
1041
avahi_simple_poll_free(mc.simple_poll);
1042
free(pubkeyfilename);
1043
free(seckeyfilename);
1045
if (gnutls_initalized){
1046
gnutls_certificate_free_credentials(mc.cred);
1047
gnutls_global_deinit ();