32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
53
#include <inttypes.h> /* PRIu16 */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
57
#include <assert.h> /* assert() */
58
#include <errno.h> /* perror(), errno */
59
#include <time.h> /* time() */
60
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
61
SIOCSIFFLAGS, if_indextoname(),
62
if_nametoindex(), IF_NAMESIZE */
63
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
64
getuid(), getgid(), setuid(),
66
#include <netinet/in.h>
67
#include <arpa/inet.h> /* inet_pton(), htons */
68
#include <iso646.h> /* not, and */
69
#include <argp.h> /* struct argp_option, error_t, struct
70
argp_state, struct argp,
71
argp_parse(), ARGP_KEY_ARG,
72
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
75
/* All Avahi types, constants and functions
39
#include <net/if.h> /* if_nametoindex */
40
#include <sys/ioctl.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
41
#include <net/if.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
78
43
#include <avahi-core/core.h>
79
44
#include <avahi-core/lookup.h>
80
45
#include <avahi-core/log.h>
82
47
#include <avahi-common/malloc.h>
83
48
#include <avahi-common/error.h>
86
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
88
init_gnutls_session(),
90
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
91
GNUTLS_OPENPGP_FMT_BASE64 */
94
#include <gpgme.h> /* All GPGME types, constants and functions
96
GPGME_PROTOCOL_OpenPGP,
51
#include <sys/types.h> /* socket(), inet_pton() */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton() */
54
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
55
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
57
#include <unistd.h> /* close() */
58
#include <netinet/in.h>
59
#include <stdbool.h> /* true */
60
#include <string.h> /* memset */
61
#include <arpa/inet.h> /* inet_pton() */
62
#include <iso646.h> /* not */
65
#include <errno.h> /* perror() */
99
71
#define BUFFER_SIZE 256
73
static const char *keydir = "/conf/conf.d/mandos";
74
static const char *pubkeyfile = "pubkey.txt";
75
static const char *seckeyfile = "seckey.txt";
101
77
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
103
static const char mandos_protocol_version[] = "1";
104
const char *argp_program_version = "password-request 1.0";
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
107
/* Used for passing in values through the Avahi callback functions */
79
/* Used for passing in values through all the callback functions */
109
81
AvahiSimplePoll *simple_poll;
110
82
AvahiServer *server;
111
83
gnutls_certificate_credentials_t cred;
112
84
unsigned int dh_bits;
113
gnutls_dh_params_t dh_params;
114
85
const char *priority;
118
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
119
* "buffer_capacity" is how much is currently allocated,
120
* "buffer_length" is how much is already used.
122
size_t adjustbuffer(char **buffer, size_t buffer_length,
123
size_t buffer_capacity){
124
if (buffer_length + BUFFER_SIZE > buffer_capacity){
125
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
129
buffer_capacity += BUFFER_SIZE;
131
return buffer_capacity;
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
88
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
141
90
const char *homedir){
142
91
gpgme_data_t dh_crypto, dh_plain;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
148
97
gpgme_engine_info_t engine_info;
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
203
150
if (rc != GPG_ERR_NO_ERROR){
204
151
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
152
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
210
/* Decrypt data from the cryptotext data buffer to the plaintext
156
/* Decrypt data from the FILE pointer to the plaintext data
212
158
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
159
if (rc != GPG_ERR_NO_ERROR){
214
160
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
215
161
gpgme_strsource(rc), gpgme_strerror(rc));
216
plaintext_length = -1;
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
225
170
gpgme_decrypt_result_t result;
226
171
result = gpgme_op_decrypt_result(ctx);
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
253
201
/* Seek back to the beginning of the GPGME plaintext data buffer */
254
202
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
203
perror("pgpme_data_seek");
256
plaintext_length = -1;
262
plaintext_capacity = adjustbuffer(plaintext,
263
(size_t)plaintext_length,
265
if (plaintext_capacity == 0){
266
perror("adjustbuffer");
267
plaintext_length = -1;
208
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
209
*new_packet = realloc(*new_packet,
210
(unsigned int)new_packet_capacity
212
if (*new_packet == NULL){
216
new_packet_capacity += BUFFER_SIZE;
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
273
221
/* Print the data, if any */
279
226
perror("gpgme_data_read");
280
plaintext_length = -1;
283
plaintext_length += ret;
229
new_packet_length += ret;
287
fprintf(stderr, "Decrypted password is: ");
288
for(ssize_t i = 0; i < plaintext_length; i++){
289
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
291
fprintf(stderr, "\n");
296
/* Delete the GPGME cryptotext data buffer */
297
gpgme_data_release(dh_crypto);
232
/* FIXME: check characters before printing to screen so to not print
233
terminal control characters */
235
/* fprintf(stderr, "decrypted password is: "); */
236
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
237
/* fprintf(stderr, "\n"); */
299
240
/* Delete the GPGME plaintext data buffer */
300
241
gpgme_data_release(dh_plain);
301
return plaintext_length;
242
return new_packet_length;
304
245
static const char * safer_gnutls_strerror (int value) {
311
/* GnuTLS log function callback */
312
252
static void debuggnutls(__attribute__((unused)) int level,
313
253
const char* string){
314
fprintf(stderr, "GnuTLS: %s", string);
254
fprintf(stderr, "%s", string);
317
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfile,
319
const char *seckeyfile){
257
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
258
gnutls_dh_params_t *dh_params){
323
263
fprintf(stderr, "Initializing GnuTLS\n");
326
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
266
if ((ret = gnutls_global_init ())
267
!= GNUTLS_E_SUCCESS) {
268
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
334
/* "Use a log level over 10 to enable all debugging options."
337
273
gnutls_global_set_log_level(11);
338
274
gnutls_global_set_log_function(debuggnutls);
341
/* OpenPGP credentials */
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n",
277
/* openpgp credentials */
278
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
279
!= GNUTLS_E_SUCCESS) {
280
fprintf (stderr, "memory error: %s\n",
345
281
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
356
291
ret = gnutls_certificate_set_openpgp_key_file
357
292
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
358
293
if (ret != GNUTLS_E_SUCCESS) {
360
"Error[%d] while reading the OpenPGP key pair ('%s',"
361
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
fprintf(stdout, "The GnuTLS error is: %s\n",
295
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
297
ret, pubkeyfile, seckeyfile);
298
fprintf(stdout, "The Error is: %s\n",
363
299
safer_gnutls_strerror(ret));
367
/* GnuTLS server initialization */
368
ret = gnutls_dh_params_init(&mc->dh_params);
369
if (ret != GNUTLS_E_SUCCESS) {
370
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
371
" %s\n", safer_gnutls_strerror(ret));
374
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
375
if (ret != GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
377
safer_gnutls_strerror(ret));
381
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
387
gnutls_certificate_free_credentials(mc->cred);
388
gnutls_global_deinit();
393
static int init_gnutls_session(mandos_context *mc,
394
gnutls_session_t *session){
396
/* GnuTLS session creation */
397
ret = gnutls_init(session, GNUTLS_SERVER);
398
if (ret != GNUTLS_E_SUCCESS){
303
//GnuTLS server initialization
304
if ((ret = gnutls_dh_params_init(dh_params))
305
!= GNUTLS_E_SUCCESS) {
306
fprintf (stderr, "Error in dh parameter initialization: %s\n",
307
safer_gnutls_strerror(ret));
311
if ((ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits))
312
!= GNUTLS_E_SUCCESS) {
313
fprintf (stderr, "Error in prime generation: %s\n",
314
safer_gnutls_strerror(ret));
318
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
320
// GnuTLS session creation
321
if ((ret = gnutls_init(session, GNUTLS_SERVER))
322
!= GNUTLS_E_SUCCESS){
399
323
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
400
324
safer_gnutls_strerror(ret));
405
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
406
if (ret != GNUTLS_E_SUCCESS) {
407
fprintf(stderr, "Syntax error at: %s\n", err);
408
fprintf(stderr, "GnuTLS error: %s\n",
409
safer_gnutls_strerror(ret));
410
gnutls_deinit (*session);
327
if ((ret = gnutls_priority_set_direct(*session, mc->priority, &err))
328
!= GNUTLS_E_SUCCESS) {
329
fprintf(stderr, "Syntax error at: %s\n", err);
330
fprintf(stderr, "GnuTLS error: %s\n",
331
safer_gnutls_strerror(ret));
415
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
417
if (ret != GNUTLS_E_SUCCESS) {
418
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
335
if ((ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
337
!= GNUTLS_E_SUCCESS) {
338
fprintf(stderr, "Error setting a credentials set: %s\n",
419
339
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
433
/* Avahi log function callback */
434
352
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
435
353
__attribute__((unused)) const char *txt){}
437
/* Called when a Mandos server is found */
438
355
static int start_mandos_communication(const char *ip, uint16_t port,
439
356
AvahiIfIndex if_index,
440
357
mandos_context *mc){
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
359
struct sockaddr_in6 to;
443
360
char *buffer = NULL;
444
361
char *decrypted_buffer;
445
362
size_t buffer_length = 0;
446
363
size_t buffer_capacity = 0;
447
364
ssize_t decrypted_buffer_size;
450
367
char interface[IF_NAMESIZE];
451
368
gnutls_session_t session;
453
ret = init_gnutls_session (mc, &session);
369
gnutls_dh_params_t dh_params;
459
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
372
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
463
376
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
487
398
fprintf(stderr, "Bad address: %s\n", ip);
490
to.in6.sin6_port = htons(port); /* Spurious warning */
401
to.sin6_port = htons(port); /* Spurious warning */
492
to.in6.sin6_scope_id = (uint32_t)if_index;
403
to.sin6_scope_id = (uint32_t)if_index;
495
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
406
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
497
407
char addrstr[INET6_ADDRSTRLEN] = "";
498
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
408
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
499
409
sizeof(addrstr)) == NULL){
500
410
perror("inet_ntop");
508
ret = connect(tcp_sd, &to.in, sizeof(to));
418
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
510
420
perror("connect");
514
const char *out = mandos_protocol_version;
517
size_t out_size = strlen(out);
518
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
519
out_size - written));
525
written += (size_t)ret;
526
if(written < out_size){
529
if (out == mandos_protocol_version){
424
ret = initgnutls (mc, &session, &dh_params);
430
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
539
433
fprintf(stderr, "Establishing TLS session with %s\n", ip);
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
545
ret = gnutls_handshake (session);
546
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
436
ret = gnutls_handshake (session);
548
438
if (ret != GNUTLS_E_SUCCESS){
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
440
fprintf(stderr, "\n*** Handshake failed ***\n");
551
441
gnutls_perror (ret);
557
/* Read OpenPGP packet that contains the wanted password */
447
//Retrieve OpenPGP packet that contains the wanted password
560
450
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
581
472
case GNUTLS_E_AGAIN:
583
474
case GNUTLS_E_REHANDSHAKE:
585
ret = gnutls_handshake (session);
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
475
ret = gnutls_handshake (session);
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
477
fprintf(stderr, "\n*** Handshake failed ***\n");
589
478
gnutls_perror (ret);
595
484
fprintf(stderr, "Unknown error while reading data from"
596
" encrypted session with Mandos server\n");
485
" encrypted session with mandos server\n");
598
487
gnutls_bye (session, GNUTLS_SHUT_RDWR);
602
491
buffer_length += (size_t) ret;
607
fprintf(stderr, "Closing TLS session\n");
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
612
495
if (buffer_length > 0){
613
496
decrypted_buffer_size = pgp_packet_decrypt(buffer,
615
498
&decrypted_buffer,
617
500
if (decrypted_buffer_size >= 0){
619
501
while(written < (size_t) decrypted_buffer_size){
620
502
ret = (int)fwrite (decrypted_buffer + written, 1,
621
503
(size_t)decrypted_buffer_size - written,
639
/* Shutdown procedure */
524
fprintf(stderr, "Closing TLS session\n");
528
gnutls_bye (session, GNUTLS_SHUT_RDWR);
644
531
gnutls_deinit (session);
532
gnutls_certificate_free_credentials (mc->cred);
533
gnutls_global_deinit ();
648
static void resolve_callback(AvahiSServiceResolver *r,
649
AvahiIfIndex interface,
650
AVAHI_GCC_UNUSED AvahiProtocol protocol,
651
AvahiResolverEvent event,
655
const char *host_name,
656
const AvahiAddress *address,
658
AVAHI_GCC_UNUSED AvahiStringList *txt,
659
AVAHI_GCC_UNUSED AvahiLookupResultFlags
537
static void resolve_callback( AvahiSServiceResolver *r,
538
AvahiIfIndex interface,
539
AVAHI_GCC_UNUSED AvahiProtocol protocol,
540
AvahiResolverEvent event,
544
const char *host_name,
545
const AvahiAddress *address,
547
AVAHI_GCC_UNUSED AvahiStringList *txt,
548
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
662
550
mandos_context *mc = userdata;
663
551
assert(r); /* Spurious warning */
712
598
case AVAHI_BROWSER_FAILURE:
714
fprintf(stderr, "(Avahi browser) %s\n",
600
fprintf(stderr, "(Browser) %s\n",
715
601
avahi_strerror(avahi_server_errno(mc->server)));
716
602
avahi_simple_poll_quit(mc->simple_poll);
719
605
case AVAHI_BROWSER_NEW:
720
/* We ignore the returned Avahi resolver object. In the callback
721
function we free it. If the Avahi server is terminated before
722
the callback function is called the Avahi server will free the
606
/* We ignore the returned resolver object. In the callback
607
function we free it. If the server is terminated before
608
the callback function is called the server will free
609
the resolver for us. */
725
if (!(avahi_s_service_resolver_new(mc->server, interface,
726
protocol, name, type, domain,
611
if (!(avahi_s_service_resolver_new(mc->server, interface, protocol, name,
727
613
AVAHI_PROTO_INET6, 0,
728
614
resolve_callback, mc)))
729
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
730
name, avahi_strerror(avahi_server_errno(mc->server)));
615
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
616
avahi_strerror(avahi_server_errno(mc->server)));
733
619
case AVAHI_BROWSER_REMOVE:
766
int main(int argc, char *argv[]){
649
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
650
AvahiServerConfig config;
767
651
AvahiSServiceBrowser *sb = NULL;
770
int exitcode = EXIT_SUCCESS;
655
int returncode = EXIT_SUCCESS;
771
656
const char *interface = "eth0";
772
657
struct ifreq network;
776
659
char *connect_to = NULL;
777
660
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
778
const char *pubkeyfile = "pubkey.txt";
779
const char *seckeyfile = "seckey.txt";
780
661
mandos_context mc = { .simple_poll = NULL, .server = NULL,
781
662
.dh_bits = 1024, .priority = "SECURE256"};
782
bool gnutls_initalized = false;
785
struct argp_option options[] = {
786
{ .name = "debug", .key = 128,
787
.doc = "Debug mode", .group = 3 },
788
{ .name = "connect", .key = 'c',
790
.doc = "Connect directly to a sepcified mandos server",
792
{ .name = "interface", .key = 'i',
794
.doc = "Interface that Avahi will conntect through",
796
{ .name = "keydir", .key = 'd',
798
.doc = "Directory where the openpgp keyring is",
800
{ .name = "seckey", .key = 's',
802
.doc = "Secret openpgp key for gnutls authentication",
804
{ .name = "pubkey", .key = 'p',
806
.doc = "Public openpgp key for gnutls authentication",
808
{ .name = "dh-bits", .key = 129,
810
.doc = "dh-bits to use in gnutls communication",
812
{ .name = "priority", .key = 130,
814
.doc = "GNUTLS priority", .group = 1 },
819
error_t parse_opt (int key, char *arg,
820
struct argp_state *state) {
821
/* Get the INPUT argument from `argp_parse', which we know is
822
a pointer to our plugin list pointer. */
844
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
859
return ARGP_ERR_UNKNOWN;
664
debug_int = debug ? 1 : 0;
666
struct option long_options[] = {
667
{"debug", no_argument, &debug_int, 1},
668
{"connect", required_argument, NULL, 'c'},
669
{"interface", required_argument, NULL, 'i'},
670
{"keydir", required_argument, NULL, 'd'},
671
{"seckey", required_argument, NULL, 's'},
672
{"pubkey", required_argument, NULL, 'p'},
673
{"dh-bits", required_argument, NULL, 'D'},
674
{"priority", required_argument, NULL, 'P'},
677
int option_index = 0;
678
ret = getopt_long (argc, argv, "i:", long_options,
705
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
864
struct argp argp = { .options = options, .parser = parse_opt,
866
.doc = "Mandos client -- Get and decrypt"
867
" passwords from mandos server" };
868
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
869
if (ret == ARGP_ERR_UNKNOWN){
870
fprintf(stderr, "Unkown error while parsing arguments\n");
871
exitcode = EXIT_FAILURE;
712
mc.priority = optarg;
719
debug = debug_int ? true : false;
876
721
pubkeyfile = combinepath(keydir, pubkeyfile);
877
722
if (pubkeyfile == NULL){
878
723
perror("combinepath");
879
exitcode = EXIT_FAILURE;
724
returncode = EXIT_FAILURE;
883
728
seckeyfile = combinepath(keydir, seckeyfile);
884
729
if (seckeyfile == NULL){
885
730
perror("combinepath");
889
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
891
fprintf(stderr, "init_gnutls_global\n");
894
gnutls_initalized = true;
910
734
if_index = (AvahiIfIndex) if_nametoindex(interface);
919
743
char *address = strrchr(connect_to, ':');
920
744
if(address == NULL){
921
745
fprintf(stderr, "No colon in address\n");
922
exitcode = EXIT_FAILURE;
926
749
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
928
751
perror("Bad port number");
929
exitcode = EXIT_FAILURE;
933
755
address = connect_to;
934
756
ret = start_mandos_communication(address, port, if_index, &mc);
936
exitcode = EXIT_FAILURE;
938
exitcode = EXIT_SUCCESS;
943
/* If the interface is down, bring it up */
945
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
948
exitcode = EXIT_FAILURE;
951
strcpy(network.ifr_name, interface); /* Spurious warning */
952
ret = ioctl(sd, SIOCGIFFLAGS, &network);
764
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
767
returncode = EXIT_FAILURE;
770
strcpy(network.ifr_name, interface); /* Spurious warning */
771
ret = ioctl(sd, SIOCGIFFLAGS, &network);
774
perror("ioctl SIOCGIFFLAGS");
775
returncode = EXIT_FAILURE;
778
if((network.ifr_flags & IFF_UP) == 0){
779
network.ifr_flags |= IFF_UP;
780
ret = ioctl(sd, SIOCSIFFLAGS, &network);
954
perror("ioctl SIOCGIFFLAGS");
955
exitcode = EXIT_FAILURE;
958
if((network.ifr_flags & IFF_UP) == 0){
959
network.ifr_flags |= IFF_UP;
960
ret = ioctl(sd, SIOCSIFFLAGS, &network);
962
perror("ioctl SIOCSIFFLAGS");
963
exitcode = EXIT_FAILURE;
782
perror("ioctl SIOCSIFFLAGS");
783
returncode = EXIT_FAILURE;
971
790
avahi_set_log_function(empty_log);
974
/* Initialize the pseudo-RNG for Avahi */
793
/* Initialize the psuedo-RNG */
975
794
srand((unsigned int) time(NULL));
977
/* Allocate main Avahi loop object */
978
mc.simple_poll = avahi_simple_poll_new();
979
if (mc.simple_poll == NULL) {
980
fprintf(stderr, "Avahi: Failed to create simple poll"
982
exitcode = EXIT_FAILURE;
987
AvahiServerConfig config;
988
/* Do not publish any local Zeroconf records */
989
avahi_server_config_init(&config);
990
config.publish_hinfo = 0;
991
config.publish_addresses = 0;
992
config.publish_workstation = 0;
993
config.publish_domain = 0;
995
/* Allocate a new server */
996
mc.server = avahi_server_new(avahi_simple_poll_get
997
(mc.simple_poll), &config, NULL,
1000
/* Free the Avahi configuration data */
1001
avahi_server_config_free(&config);
1004
/* Check if creating the Avahi server object succeeded */
1005
if (mc.server == NULL) {
1006
fprintf(stderr, "Failed to create Avahi server: %s\n",
796
/* Allocate main loop object */
797
if (!(mc.simple_poll = avahi_simple_poll_new())) {
798
fprintf(stderr, "Failed to create simple poll object.\n");
799
returncode = EXIT_FAILURE;
803
/* Do not publish any local records */
804
avahi_server_config_init(&config);
805
config.publish_hinfo = 0;
806
config.publish_addresses = 0;
807
config.publish_workstation = 0;
808
config.publish_domain = 0;
810
/* Allocate a new server */
811
mc.server=avahi_server_new(avahi_simple_poll_get(mc.simple_poll),
812
&config, NULL, NULL, &error);
814
/* Free the configuration data */
815
avahi_server_config_free(&config);
817
/* Check if creating the server object succeeded */
819
fprintf(stderr, "Failed to create server: %s\n",
1007
820
avahi_strerror(error));
1008
exitcode = EXIT_FAILURE;
821
returncode = EXIT_FAILURE;
1012
/* Create the Avahi service browser */
825
/* Create the service browser */
1013
826
sb = avahi_s_service_browser_new(mc.server, if_index,
1014
827
AVAHI_PROTO_INET6,
1015
828
"_mandos._tcp", NULL, 0,
1016
829
browse_callback, &mc);
1018
831
fprintf(stderr, "Failed to create service browser: %s\n",
1019
832
avahi_strerror(avahi_server_errno(mc.server)));
1020
exitcode = EXIT_FAILURE;
833
returncode = EXIT_FAILURE;
1024
837
/* Run the main loop */
1027
fprintf(stderr, "Starting Avahi loop search\n");
840
fprintf(stderr, "Starting avahi loop search\n");
1030
843
avahi_simple_poll_loop(mc.simple_poll);
1035
848
fprintf(stderr, "%s exiting\n", argv[0]);
1038
851
/* Cleanup things */
1040
853
avahi_s_service_browser_free(sb);
1042
if (mc.server != NULL)
1043
856
avahi_server_free(mc.server);
1045
if (mc.simple_poll != NULL)
1046
859
avahi_simple_poll_free(mc.simple_poll);
1047
860
free(pubkeyfile);
1048
861
free(seckeyfile);
1050
if (gnutls_initalized){
1051
gnutls_certificate_free_credentials(mc.cred);
1052
gnutls_global_deinit ();