33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
45
#include <stdbool.h> /* bool, false, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, uid_t, gid_t, open(),
53
#include <sys/stat.h> /* open() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
inet_pton(), connect() */
56
#include <fcntl.h> /* open() */
57
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
60
#include <assert.h> /* assert() */
61
#include <errno.h> /* perror(), errno */
62
#include <time.h> /* nanosleep(), time() */
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
63
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
SIOCSIFFLAGS, if_indextoname(),
65
if_nametoindex(), IF_NAMESIZE */
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, or, and */
74
#include <argp.h> /* struct argp_option, error_t, struct
75
argp_state, struct argp,
76
argp_parse(), ARGP_KEY_ARG,
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <signal.h> /* sigemptyset(), sigaddset(),
79
sigaction(), SIGTERM, sigaction,
83
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
87
/* All Avahi types, constants and functions
90
47
#include <avahi-core/core.h>
91
48
#include <avahi-core/lookup.h>
92
49
#include <avahi-core/log.h>
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
159
static bool init_gpgme(const char *seckey,
160
const char *pubkey, const char *tempdir){
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
117
const char *homedir){
118
gpgme_data_t dh_crypto, dh_plain;
162
120
gpgme_error_t rc;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
163
124
gpgme_engine_info_t engine_info;
167
* Helper function to insert pub and seckey to the engine keyring.
169
bool import_key(const char *filename){
171
gpgme_data_t pgp_data;
173
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
179
rc = gpgme_data_new_from_fd(&pgp_data, fd);
180
if(rc != GPG_ERR_NO_ERROR){
181
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
182
gpgme_strsource(rc), gpgme_strerror(rc));
186
rc = gpgme_op_import(mc.ctx, pgp_data);
187
if(rc != GPG_ERR_NO_ERROR){
188
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
189
gpgme_strsource(rc), gpgme_strerror(rc));
193
ret = (int)TEMP_FAILURE_RETRY(close(fd));
197
gpgme_data_release(pgp_data);
202
fprintf(stderr, "Initializing GPGME\n");
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
206
131
gpgme_check_version(NULL);
207
132
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
208
if(rc != GPG_ERR_NO_ERROR){
133
if (rc != GPG_ERR_NO_ERROR){
209
134
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
210
135
gpgme_strsource(rc), gpgme_strerror(rc));
214
/* Set GPGME home directory for the OpenPGP engine only */
215
rc = gpgme_get_engine_info(&engine_info);
216
if(rc != GPG_ERR_NO_ERROR){
139
/* Set GPGME home directory for the OpenPGP engine only */
140
rc = gpgme_get_engine_info (&engine_info);
141
if (rc != GPG_ERR_NO_ERROR){
217
142
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
218
143
gpgme_strsource(rc), gpgme_strerror(rc));
221
146
while(engine_info != NULL){
222
147
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
223
148
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
224
engine_info->file_name, tempdir);
149
engine_info->file_name, homedir);
227
152
engine_info = engine_info->next;
229
154
if(engine_info == NULL){
230
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
234
/* Create new GPGME "context" */
235
rc = gpgme_new(&(mc.ctx));
236
if(rc != GPG_ERR_NO_ERROR){
237
fprintf(stderr, "bad gpgme_new: %s: %s\n",
238
gpgme_strsource(rc), gpgme_strerror(rc));
242
if(not import_key(pubkey) or not import_key(seckey)){
250
* Decrypt OpenPGP data.
251
* Returns -1 on error
253
static ssize_t pgp_packet_decrypt(const char *cryptotext,
256
gpgme_data_t dh_crypto, dh_plain;
259
size_t plaintext_capacity = 0;
260
ssize_t plaintext_length = 0;
263
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
266
159
/* Create new GPGME data buffer from memory cryptotext */
267
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
269
if(rc != GPG_ERR_NO_ERROR){
162
if (rc != GPG_ERR_NO_ERROR){
270
163
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
271
164
gpgme_strsource(rc), gpgme_strerror(rc));
414
317
/* OpenPGP credentials */
415
gnutls_certificate_allocate_credentials(&mc.cred);
416
if(ret != GNUTLS_E_SUCCESS){
417
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
421
safer_gnutls_strerror(ret));
422
gnutls_global_deinit();
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
319
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
427
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
428
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
326
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
327
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
432
331
ret = gnutls_certificate_set_openpgp_key_file
433
(mc.cred, pubkeyfilename, seckeyfilename,
434
GNUTLS_OPENPGP_FMT_BASE64);
435
if(ret != GNUTLS_E_SUCCESS){
332
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
333
if (ret != GNUTLS_E_SUCCESS) {
437
335
"Error[%d] while reading the OpenPGP key pair ('%s',"
438
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
439
fprintf(stderr, "The GnuTLS error is: %s\n",
336
" '%s')\n", ret, pubkeyfile, seckeyfile);
337
fprintf(stdout, "The GnuTLS error is: %s\n",
440
338
safer_gnutls_strerror(ret));
444
342
/* GnuTLS server initialization */
445
ret = gnutls_dh_params_init(&mc.dh_params);
446
if(ret != GNUTLS_E_SUCCESS){
447
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
448
" %s\n", safer_gnutls_strerror(ret));
451
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
452
if(ret != GNUTLS_E_SUCCESS){
453
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
454
safer_gnutls_strerror(ret));
458
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
343
ret = gnutls_dh_params_init(&mc->dh_params);
344
if (ret != GNUTLS_E_SUCCESS) {
345
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
346
" %s\n", safer_gnutls_strerror(ret));
349
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
350
if (ret != GNUTLS_E_SUCCESS) {
351
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
352
safer_gnutls_strerror(ret));
356
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
464
gnutls_certificate_free_credentials(mc.cred);
465
gnutls_global_deinit();
466
gnutls_dh_params_deinit(mc.dh_params);
470
static int init_gnutls_session(gnutls_session_t *session){
361
static int init_gnutls_session(mandos_context *mc,
362
gnutls_session_t *session){
472
364
/* GnuTLS session creation */
473
365
ret = gnutls_init(session, GNUTLS_SERVER);
474
if(ret != GNUTLS_E_SUCCESS){
366
if (ret != GNUTLS_E_SUCCESS){
475
367
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
476
368
safer_gnutls_strerror(ret));
481
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
482
if(ret != GNUTLS_E_SUCCESS){
373
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
374
if (ret != GNUTLS_E_SUCCESS) {
483
375
fprintf(stderr, "Syntax error at: %s\n", err);
484
376
fprintf(stderr, "GnuTLS error: %s\n",
485
377
safer_gnutls_strerror(ret));
486
gnutls_deinit(*session);
491
382
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
493
if(ret != GNUTLS_E_SUCCESS){
384
if (ret != GNUTLS_E_SUCCESS) {
494
385
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
495
386
safer_gnutls_strerror(ret));
496
gnutls_deinit(*session);
500
390
/* ignore client certificate if any. */
501
gnutls_certificate_server_set_request(*session,
391
gnutls_certificate_server_set_request (*session,
504
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
394
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
875
sig_atomic_t quit_now = 0;
877
static void handle_sigterm(__attribute__((unused)) int sig){
882
int old_errno = errno;
883
if(mc.simple_poll != NULL){
884
avahi_simple_poll_quit(mc.simple_poll);
707
/* Combines file name and path and returns the malloced new
708
string. some sane checks could/should be added */
709
static const char *combinepath(const char *first, const char *second){
710
size_t f_len = strlen(first);
711
size_t s_len = strlen(second);
712
char *tmp = malloc(f_len + s_len + 2);
717
memcpy(tmp, first, f_len); /* Spurious warning */
721
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
723
tmp[f_len + 1 + s_len] = '\0';
889
728
int main(int argc, char *argv[]){
890
AvahiSServiceBrowser *sb = NULL;
895
int exitcode = EXIT_SUCCESS;
896
const char *interface = "eth0";
897
struct ifreq network;
901
char *connect_to = NULL;
902
char tempdir[] = "/tmp/mandosXXXXXX";
903
bool tempdir_created = false;
904
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
905
const char *seckey = PATHDIR "/" SECKEY;
906
const char *pubkey = PATHDIR "/" PUBKEY;
908
/* Initialize Mandos context */
909
mc = (mandos_context){ .simple_poll = NULL, .server = NULL,
910
.dh_bits = 1024, .priority = "SECURE256"
911
":!CTYPE-X.509:+CTYPE-OPENPGP" };
912
bool gnutls_initialized = false;
913
bool gpgme_initialized = false;
729
AvahiSServiceBrowser *sb = NULL;
732
int exitcode = EXIT_SUCCESS;
733
const char *interface = "eth0";
734
struct ifreq network;
738
char *connect_to = NULL;
739
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
742
mandos_context mc = { .simple_poll = NULL, .server = NULL,
743
.dh_bits = 1024, .priority = "SECURE256"};
746
struct argp_option options[] = {
747
{ .name = "debug", .key = 128,
748
.doc = "Debug mode", .group = 3 },
749
{ .name = "connect", .key = 'c',
751
.doc = "Connect directly to a sepcified mandos server",
753
{ .name = "interface", .key = 'i',
755
.doc = "Interface that Avahi will conntect through",
757
{ .name = "keydir", .key = 'd',
759
.doc = "Directory where the openpgp keyring is",
761
{ .name = "seckey", .key = 's',
763
.doc = "Secret openpgp key for gnutls authentication",
765
{ .name = "pubkey", .key = 'p',
767
.doc = "Public openpgp key for gnutls authentication",
769
{ .name = "dh-bits", .key = 129,
771
.doc = "dh-bits to use in gnutls communication",
773
{ .name = "priority", .key = 130,
775
.doc = "GNUTLS priority", .group = 1 },
916
struct sigaction old_sigterm_action;
917
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
920
struct argp_option options[] = {
921
{ .name = "debug", .key = 128,
922
.doc = "Debug mode", .group = 3 },
923
{ .name = "connect", .key = 'c',
924
.arg = "ADDRESS:PORT",
925
.doc = "Connect directly to a specific Mandos server",
927
{ .name = "interface", .key = 'i',
929
.doc = "Network interface that will be used to search for"
932
{ .name = "seckey", .key = 's',
934
.doc = "OpenPGP secret key file base name",
936
{ .name = "pubkey", .key = 'p',
938
.doc = "OpenPGP public key file base name",
940
{ .name = "dh-bits", .key = 129,
942
.doc = "Bit length of the prime number used in the"
943
" Diffie-Hellman key exchange",
945
{ .name = "priority", .key = 130,
947
.doc = "GnuTLS priority string for the TLS handshake",
949
{ .name = "delay", .key = 131,
951
.doc = "Maximum delay to wait for interface startup",
956
error_t parse_opt(int key, char *arg,
957
struct argp_state *state){
959
case 128: /* --debug */
962
case 'c': /* --connect */
965
case 'i': /* --interface */
968
case 's': /* --seckey */
971
case 'p': /* --pubkey */
974
case 129: /* --dh-bits */
975
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
976
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
977
or arg[numchars] != '\0'){
978
fprintf(stderr, "Bad number of DH bits\n");
981
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
983
case 130: /* --priority */
986
case 131: /* --delay */
987
ret = sscanf(arg, "%lf%n", &delay, &numchars);
988
if(ret < 1 or arg[numchars] != '\0'){
989
fprintf(stderr, "Bad delay\n");
998
return ARGP_ERR_UNKNOWN;
1003
struct argp argp = { .options = options, .parser = parse_opt,
1005
.doc = "Mandos client -- Get and decrypt"
1006
" passwords from a Mandos server" };
1007
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1008
if(ret == ARGP_ERR_UNKNOWN){
1009
fprintf(stderr, "Unknown error while parsing arguments\n");
1010
exitcode = EXIT_FAILURE;
1015
/* If the interface is down, bring it up */
1016
if(interface[0] != '\0'){
1018
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1019
messages to mess up the prompt */
1020
ret = klogctl(8, NULL, 5);
1021
bool restore_loglevel = true;
1023
restore_loglevel = false;
1026
#endif /* __linux__ */
1028
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1031
exitcode = EXIT_FAILURE;
1033
if(restore_loglevel){
1034
ret = klogctl(7, NULL, 0);
1039
#endif /* __linux__ */
1042
strcpy(network.ifr_name, interface);
1043
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1045
perror("ioctl SIOCGIFFLAGS");
1047
if(restore_loglevel){
1048
ret = klogctl(7, NULL, 0);
1053
#endif /* __linux__ */
1054
exitcode = EXIT_FAILURE;
1057
if((network.ifr_flags & IFF_UP) == 0){
1058
network.ifr_flags |= IFF_UP;
1059
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1061
perror("ioctl SIOCSIFFLAGS");
1062
exitcode = EXIT_FAILURE;
1064
if(restore_loglevel){
1065
ret = klogctl(7, NULL, 0);
780
error_t parse_opt (int key, char *arg,
781
struct argp_state *state) {
782
/* Get the INPUT argument from `argp_parse', which we know is
783
a pointer to our plugin list pointer. */
805
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
820
return ARGP_ERR_UNKNOWN;
1070
#endif /* __linux__ */
1074
/* sleep checking until interface is running */
1075
for(int i=0; i < delay * 4; i++){
1076
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1078
perror("ioctl SIOCGIFFLAGS");
1079
} else if(network.ifr_flags & IFF_RUNNING){
1082
struct timespec sleeptime = { .tv_nsec = 250000000 };
1083
ret = nanosleep(&sleeptime, NULL);
1084
if(ret == -1 and errno != EINTR){
1085
perror("nanosleep");
1088
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1093
if(restore_loglevel){
1094
/* Restores kernel loglevel to default */
1095
ret = klogctl(7, NULL, 0);
1100
#endif /* __linux__ */
1117
ret = init_gnutls_global(pubkey, seckey);
1119
fprintf(stderr, "init_gnutls_global failed\n");
1120
exitcode = EXIT_FAILURE;
1123
gnutls_initialized = true;
1126
if(mkdtemp(tempdir) == NULL){
1130
tempdir_created = true;
1132
if(not init_gpgme(pubkey, seckey, tempdir)){
1133
fprintf(stderr, "init_gpgme failed\n");
1134
exitcode = EXIT_FAILURE;
1137
gpgme_initialized = true;
1140
if(interface[0] != '\0'){
825
struct argp argp = { .options = options, .parser = parse_opt,
827
.doc = "Mandos client -- Get and decrypt"
828
" passwords from mandos server" };
829
argp_parse (&argp, argc, argv, 0, 0, NULL);
832
pubkeyfile = combinepath(keydir, pubkeyfile);
833
if (pubkeyfile == NULL){
834
perror("combinepath");
835
exitcode = EXIT_FAILURE;
839
seckeyfile = combinepath(keydir, seckeyfile);
840
if (seckeyfile == NULL){
841
perror("combinepath");
845
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
847
fprintf(stderr, "init_gnutls_global\n");
1141
864
if_index = (AvahiIfIndex) if_nametoindex(interface);
1142
865
if(if_index == 0){
1143
866
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1144
exitcode = EXIT_FAILURE;
1149
if(connect_to != NULL){
1150
/* Connect directly, do not use Zeroconf */
1151
/* (Mainly meant for debugging) */
1152
char *address = strrchr(connect_to, ':');
1153
if(address == NULL){
1154
fprintf(stderr, "No colon in address\n");
1155
exitcode = EXIT_FAILURE;
1159
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1160
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1161
or address[numchars+1] != '\0'){
1162
fprintf(stderr, "Bad port number\n");
1163
exitcode = EXIT_FAILURE;
1166
port = (uint16_t)tmpmax;
1168
address = connect_to;
1169
/* Colon in address indicates IPv6 */
1171
if(strchr(address, ':') != NULL){
1176
ret = start_mandos_communication(address, port, if_index, af);
1178
exitcode = EXIT_FAILURE;
1180
exitcode = EXIT_SUCCESS;
1186
avahi_set_log_function(empty_log);
1189
/* Initialize the pseudo-RNG for Avahi */
1190
srand((unsigned int) time(NULL));
1192
/* Allocate main Avahi loop object */
1193
mc.simple_poll = avahi_simple_poll_new();
1194
if(mc.simple_poll == NULL){
1195
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1196
exitcode = EXIT_FAILURE;
1201
AvahiServerConfig config;
1202
/* Do not publish any local Zeroconf records */
1203
avahi_server_config_init(&config);
1204
config.publish_hinfo = 0;
1205
config.publish_addresses = 0;
1206
config.publish_workstation = 0;
1207
config.publish_domain = 0;
1209
/* Allocate a new server */
1210
mc.server = avahi_server_new(avahi_simple_poll_get
1211
(mc.simple_poll), &config, NULL,
1214
/* Free the Avahi configuration data */
1215
avahi_server_config_free(&config);
1218
/* Check if creating the Avahi server object succeeded */
1219
if(mc.server == NULL){
1220
fprintf(stderr, "Failed to create Avahi server: %s\n",
1221
avahi_strerror(error));
1222
exitcode = EXIT_FAILURE;
1226
/* Create the Avahi service browser */
1227
sb = avahi_s_service_browser_new(mc.server, if_index,
1228
AVAHI_PROTO_INET6, "_mandos._tcp",
1229
NULL, 0, browse_callback, NULL);
1231
fprintf(stderr, "Failed to create service browser: %s\n",
1232
avahi_strerror(avahi_server_errno(mc.server)));
1233
exitcode = EXIT_FAILURE;
1237
sigemptyset(&sigterm_action.sa_mask);
1238
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1240
perror("sigaddset");
1241
exitcode = EXIT_FAILURE;
1244
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1246
perror("sigaddset");
1247
exitcode = EXIT_FAILURE;
1250
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1252
perror("sigaddset");
1253
exitcode = EXIT_FAILURE;
1256
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1258
perror("sigaction");
1259
exitcode = EXIT_FAILURE;
1263
/* Run the main loop */
1266
fprintf(stderr, "Starting Avahi loop search\n");
1269
avahi_simple_poll_loop(mc.simple_poll);
870
if(connect_to != NULL){
871
/* Connect directly, do not use Zeroconf */
872
/* (Mainly meant for debugging) */
873
char *address = strrchr(connect_to, ':');
875
fprintf(stderr, "No colon in address\n");
876
exitcode = EXIT_FAILURE;
880
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
882
perror("Bad port number");
883
exitcode = EXIT_FAILURE;
887
address = connect_to;
888
ret = start_mandos_communication(address, port, if_index, &mc);
890
exitcode = EXIT_FAILURE;
892
exitcode = EXIT_SUCCESS;
897
/* If the interface is down, bring it up */
899
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
902
exitcode = EXIT_FAILURE;
905
strcpy(network.ifr_name, interface); /* Spurious warning */
906
ret = ioctl(sd, SIOCGIFFLAGS, &network);
908
perror("ioctl SIOCGIFFLAGS");
909
exitcode = EXIT_FAILURE;
912
if((network.ifr_flags & IFF_UP) == 0){
913
network.ifr_flags |= IFF_UP;
914
ret = ioctl(sd, SIOCSIFFLAGS, &network);
916
perror("ioctl SIOCSIFFLAGS");
917
exitcode = EXIT_FAILURE;
925
avahi_set_log_function(empty_log);
928
/* Initialize the pseudo-RNG for Avahi */
929
srand((unsigned int) time(NULL));
931
/* Allocate main Avahi loop object */
932
mc.simple_poll = avahi_simple_poll_new();
933
if (mc.simple_poll == NULL) {
934
fprintf(stderr, "Avahi: Failed to create simple poll"
936
exitcode = EXIT_FAILURE;
941
AvahiServerConfig config;
942
/* Do not publish any local Zeroconf records */
943
avahi_server_config_init(&config);
944
config.publish_hinfo = 0;
945
config.publish_addresses = 0;
946
config.publish_workstation = 0;
947
config.publish_domain = 0;
949
/* Allocate a new server */
950
mc.server = avahi_server_new(avahi_simple_poll_get
951
(mc.simple_poll), &config, NULL,
954
/* Free the Avahi configuration data */
955
avahi_server_config_free(&config);
958
/* Check if creating the Avahi server object succeeded */
959
if (mc.server == NULL) {
960
fprintf(stderr, "Failed to create Avahi server: %s\n",
961
avahi_strerror(error));
962
exitcode = EXIT_FAILURE;
966
/* Create the Avahi service browser */
967
sb = avahi_s_service_browser_new(mc.server, if_index,
969
"_mandos._tcp", NULL, 0,
970
browse_callback, &mc);
972
fprintf(stderr, "Failed to create service browser: %s\n",
973
avahi_strerror(avahi_server_errno(mc.server)));
974
exitcode = EXIT_FAILURE;
978
/* Run the main loop */
981
fprintf(stderr, "Starting Avahi loop search\n");
984
avahi_simple_poll_loop(mc.simple_poll);
1274
fprintf(stderr, "%s exiting\n", argv[0]);
1277
/* Cleanup things */
1279
avahi_s_service_browser_free(sb);
1281
if(mc.server != NULL)
1282
avahi_server_free(mc.server);
1284
if(mc.simple_poll != NULL)
1285
avahi_simple_poll_free(mc.simple_poll);
1287
if(gnutls_initialized){
1288
gnutls_certificate_free_credentials(mc.cred);
1289
gnutls_global_deinit();
1290
gnutls_dh_params_deinit(mc.dh_params);
1293
if(gpgme_initialized){
1294
gpgme_release(mc.ctx);
1297
/* Removes the temp directory used by GPGME */
1298
if(tempdir_created){
1300
struct dirent *direntry;
1301
d = opendir(tempdir);
1303
if(errno != ENOENT){
1308
direntry = readdir(d);
1309
if(direntry == NULL){
1312
/* Skip "." and ".." */
1313
if(direntry->d_name[0] == '.'
1314
and (direntry->d_name[1] == '\0'
1315
or (direntry->d_name[1] == '.'
1316
and direntry->d_name[2] == '\0'))){
1319
char *fullname = NULL;
1320
ret = asprintf(&fullname, "%s/%s", tempdir,
1326
ret = remove(fullname);
1328
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1335
ret = rmdir(tempdir);
1336
if(ret == -1 and errno != ENOENT){
989
fprintf(stderr, "%s exiting\n", argv[0]);
994
avahi_s_service_browser_free(sb);
996
if (mc.server != NULL)
997
avahi_server_free(mc.server);
999
if (mc.simple_poll != NULL)
1000
avahi_simple_poll_free(mc.simple_poll);