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- Committer: Teddy Hogeborn
- Date: 2008-08-04 21:25:55 UTC
- Revision ID: teddy@fukt.bsnet.se-20080804212555-rm7xxjze65f8avy3
* server.py: Cosmetic changes.
added
removed
plugins.d/mandosclient.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
35
37
#include <stdio.h>
36
38
#include <assert.h>
37
39
#include <stdlib.h>
49
51
#include <avahi-common/malloc.h>
50
52
#include <avahi-common/error.h>
51
53
52
//mandos client part
54
/* Mandos client part */
53
55
#include <sys/types.h> /* socket(), inet_pton() */
54
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
57
struct in6_addr, inet_pton() */
62
64
#include <string.h> /* memset */
63
65
#include <arpa/inet.h> /* inet_pton() */
64
66
#include <iso646.h> /* not */
65
66
// gpgme
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
71
/* GPGME */
67
72
#include <errno.h> /* perror() */
68
73
#include <gpgme.h>
69
74
70
// getopt_long
71
#include <getopt.h>
72
73
75
#define BUFFER_SIZE 256
74
76
77
bool debug = false;
75
78
static const char *keydir = "/conf/conf.d/mandos";
76
static const char *pubkeyfile = "pubkey.txt";
77
static const char *seckeyfile = "seckey.txt";
78
79
bool debug = false;
80
81
/* Used for passing in values through all the callback functions */
79
static const char mandos_protocol_version[] = "1";
80
const char *argp_program_version = "mandosclient 0.9";
81
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
82
83
/* Used for passing in values through the Avahi callback functions */
82
84
typedef struct {
83
85
AvahiSimplePoll *simple_poll;
84
86
AvahiServer *server;
85
87
gnutls_certificate_credentials_t cred;
86
88
unsigned int dh_bits;
89
gnutls_dh_params_t dh_params;
87
90
const char *priority;
88
91
} mandos_context;
89
92
93
/*
94
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
95
* "buffer_capacity" is how much is currently allocated,
96
* "buffer_length" is how much is already used.
97
*/
98
size_t adjustbuffer(char **buffer, size_t buffer_length,
99
size_t buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
101
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
102
if (buffer == NULL){
103
return 0;
104
}
105
buffer_capacity += BUFFER_SIZE;
106
}
107
return buffer_capacity;
108
}
109
90
110
/*
91
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
92
112
* Returns -1 on error
99
119
gpgme_ctx_t ctx;
100
120
gpgme_error_t rc;
101
121
ssize_t ret;
102
ssize_t plaintext_capacity = 0;
122
size_t plaintext_capacity = 0;
103
123
ssize_t plaintext_length = 0;
104
124
gpgme_engine_info_t engine_info;
105
125
215
235
216
236
*plaintext = NULL;
217
237
while(true){
218
if (plaintext_length + BUFFER_SIZE > plaintext_capacity){
219
*plaintext = realloc(*plaintext,
220
(unsigned int)plaintext_capacity
221
+ BUFFER_SIZE);
222
if (*plaintext == NULL){
223
perror("realloc");
238
plaintext_capacity = adjustbuffer(plaintext,
239
(size_t)plaintext_length,
240
plaintext_capacity);
241
if (plaintext_capacity == 0){
242
perror("adjustbuffer");
224
243
plaintext_length = -1;
225
244
goto decrypt_end;
226
}
227
plaintext_capacity += BUFFER_SIZE;
228
245
}
229
246
230
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
244
261
245
262
if(debug){
246
263
fprintf(stderr, "Decrypted password is: ");
247
for(size_t i = 0; i < plaintext_length; i++){
264
for(ssize_t i = 0; i < plaintext_length; i++){
248
265
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
249
266
}
250
267
fprintf(stderr, "\n");
267
284
return ret;
268
285
}
269
286
287
/* GnuTLS log function callback */
270
288
static void debuggnutls(__attribute__((unused)) int level,
271
289
const char* string){
272
fprintf(stderr, "%s", string);
290
fprintf(stderr, "GnuTLS: %s", string);
273
291
}
274
292
275
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
276
gnutls_dh_params_t *dh_params){
277
const char *err;
293
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
278
296
int ret;
279
297
280
298
if(debug){
283
301
284
302
if ((ret = gnutls_global_init ())
285
303
!= GNUTLS_E_SUCCESS) {
286
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
287
306
return -1;
288
307
}
289
308
290
309
if (debug){
310
/* "Use a log level over 10 to enable all debugging options."
311
* - GnuTLS manual
312
*/
291
313
gnutls_global_set_log_level(11);
292
314
gnutls_global_set_log_function(debuggnutls);
293
315
}
294
316
295
/* openpgp credentials */
317
/* OpenPGP credentials */
296
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
297
319
!= GNUTLS_E_SUCCESS) {
298
fprintf (stderr, "memory error: %s\n",
320
fprintf (stderr, "GnuTLS memory error: %s\n",
299
321
safer_gnutls_strerror(ret));
300
322
return -1;
301
323
}
309
331
ret = gnutls_certificate_set_openpgp_key_file
310
332
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
311
333
if (ret != GNUTLS_E_SUCCESS) {
312
fprintf
313
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
314
" '%s')\n",
315
ret, pubkeyfile, seckeyfile);
316
fprintf(stdout, "The Error is: %s\n",
334
fprintf(stderr,
335
"Error[%d] while reading the OpenPGP key pair ('%s',"
336
" '%s')\n", ret, pubkeyfile, seckeyfile);
337
fprintf(stdout, "The GnuTLS error is: %s\n",
317
338
safer_gnutls_strerror(ret));
318
339
return -1;
319
340
}
320
341
321
//GnuTLS server initialization
322
if ((ret = gnutls_dh_params_init(dh_params))
323
!= GNUTLS_E_SUCCESS) {
324
fprintf (stderr, "Error in dh parameter initialization: %s\n",
325
safer_gnutls_strerror(ret));
326
return -1;
327
}
328
329
if ((ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits))
330
!= GNUTLS_E_SUCCESS) {
331
fprintf (stderr, "Error in prime generation: %s\n",
332
safer_gnutls_strerror(ret));
333
return -1;
334
}
335
336
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
337
338
// GnuTLS session creation
339
if ((ret = gnutls_init(session, GNUTLS_SERVER))
340
!= GNUTLS_E_SUCCESS){
342
/* GnuTLS server initialization */
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));
347
return -1;
348
}
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));
353
return -1;
354
}
355
356
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
357
358
return 0;
359
}
360
361
static int init_gnutls_session(mandos_context *mc,
362
gnutls_session_t *session){
363
int ret;
364
/* GnuTLS session creation */
365
ret = gnutls_init(session, GNUTLS_SERVER);
366
if (ret != GNUTLS_E_SUCCESS){
341
367
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
342
368
safer_gnutls_strerror(ret));
343
369
}
344
370
345
if ((ret = gnutls_priority_set_direct(*session, mc->priority, &err))
346
!= GNUTLS_E_SUCCESS) {
347
fprintf(stderr, "Syntax error at: %s\n", err);
348
fprintf(stderr, "GnuTLS error: %s\n",
349
safer_gnutls_strerror(ret));
350
return -1;
371
{
372
const char *err;
373
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
374
if (ret != GNUTLS_E_SUCCESS) {
375
fprintf(stderr, "Syntax error at: %s\n", err);
376
fprintf(stderr, "GnuTLS error: %s\n",
377
safer_gnutls_strerror(ret));
378
return -1;
379
}
351
380
}
352
381
353
if ((ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
354
mc->cred))
355
!= GNUTLS_E_SUCCESS) {
356
fprintf(stderr, "Error setting a credentials set: %s\n",
382
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
383
mc->cred);
384
if (ret != GNUTLS_E_SUCCESS) {
385
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
357
386
safer_gnutls_strerror(ret));
358
387
return -1;
359
388
}
367
396
return 0;
368
397
}
369
398
399
/* Avahi log function callback */
370
400
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
371
401
__attribute__((unused)) const char *txt){}
372
402
403
/* Called when a Mandos server is found */
373
404
static int start_mandos_communication(const char *ip, uint16_t port,
374
405
AvahiIfIndex if_index,
375
406
mandos_context *mc){
376
407
int ret, tcp_sd;
377
struct sockaddr_in6 to;
408
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
378
409
char *buffer = NULL;
379
410
char *decrypted_buffer;
380
411
size_t buffer_length = 0;
381
412
size_t buffer_capacity = 0;
382
413
ssize_t decrypted_buffer_size;
383
size_t written = 0;
414
size_t written;
384
415
int retval = 0;
385
416
char interface[IF_NAMESIZE];
386
417
gnutls_session_t session;
387
gnutls_dh_params_t dh_params;
418
419
ret = init_gnutls_session (mc, &session);
420
if (ret != 0){
421
return -1;
422
}
388
423
389
424
if(debug){
390
425
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
406
441
}
407
442
408
443
memset(&to,0,sizeof(to)); /* Spurious warning */
409
to.sin6_family = AF_INET6;
410
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
444
to.in6.sin6_family = AF_INET6;
445
/* It would be nice to have a way to detect if we were passed an
446
IPv4 address here. Now we assume an IPv6 address. */
447
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
411
448
if (ret < 0 ){
412
449
perror("inet_pton");
413
450
return -1;
416
453
fprintf(stderr, "Bad address: %s\n", ip);
417
454
return -1;
418
455
}
419
to.sin6_port = htons(port); /* Spurious warning */
456
to.in6.sin6_port = htons(port); /* Spurious warning */
420
457
421
to.sin6_scope_id = (uint32_t)if_index;
458
to.in6.sin6_scope_id = (uint32_t)if_index;
422
459
423
460
if(debug){
424
461
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
425
462
char addrstr[INET6_ADDRSTRLEN] = "";
426
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
463
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
427
464
sizeof(addrstr)) == NULL){
428
465
perror("inet_ntop");
429
466
} else {
433
470
}
434
471
}
435
472
436
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
473
ret = connect(tcp_sd, &to.in, sizeof(to));
437
474
if (ret < 0){
438
475
perror("connect");
439
476
return -1;
440
477
}
441
442
ret = initgnutls (mc, &session, &dh_params);
443
if (ret != 0){
444
retval = -1;
445
return -1;
478
479
const char *out = mandos_protocol_version;
480
written = 0;
481
while (true){
482
size_t out_size = strlen(out);
483
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
484
out_size - written));
485
if (ret == -1){
486
perror("write");
487
retval = -1;
488
goto mandos_end;
489
}
490
written += (size_t)ret;
491
if(written < out_size){
492
continue;
493
} else {
494
if (out == mandos_protocol_version){
495
written = 0;
496
out = "\r\n";
497
} else {
498
break;
499
}
500
}
501
}
502
503
if(debug){
504
fprintf(stderr, "Establishing TLS session with %s\n", ip);
446
505
}
447
506
448
507
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
449
508
450
if(debug){
451
fprintf(stderr, "Establishing TLS session with %s\n", ip);
452
}
453
454
509
ret = gnutls_handshake (session);
455
510
456
511
if (ret != GNUTLS_E_SUCCESS){
457
512
if(debug){
458
fprintf(stderr, "\n*** Handshake failed ***\n");
513
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
459
514
gnutls_perror (ret);
460
515
}
461
516
retval = -1;
462
goto exit;
517
goto mandos_end;
463
518
}
464
519
465
//Retrieve OpenPGP packet that contains the wanted password
520
/* Read OpenPGP packet that contains the wanted password */
466
521
467
522
if(debug){
468
523
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
470
525
}
471
526
472
527
while(true){
473
if (buffer_length + BUFFER_SIZE > buffer_capacity){
474
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
475
if (buffer == NULL){
476
perror("realloc");
477
goto exit;
478
}
479
buffer_capacity += BUFFER_SIZE;
528
buffer_capacity = adjustbuffer(&buffer, buffer_length,
529
buffer_capacity);
530
if (buffer_capacity == 0){
531
perror("adjustbuffer");
532
retval = -1;
533
goto mandos_end;
480
534
}
481
535
482
536
ret = gnutls_record_recv(session, buffer+buffer_length,
492
546
case GNUTLS_E_REHANDSHAKE:
493
547
ret = gnutls_handshake (session);
494
548
if (ret < 0){
495
fprintf(stderr, "\n*** Handshake failed ***\n");
549
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
496
550
gnutls_perror (ret);
497
551
retval = -1;
498
goto exit;
552
goto mandos_end;
499
553
}
500
554
break;
501
555
default:
502
556
fprintf(stderr, "Unknown error while reading data from"
503
" encrypted session with mandos server\n");
557
" encrypted session with Mandos server\n");
504
558
retval = -1;
505
559
gnutls_bye (session, GNUTLS_SHUT_RDWR);
506
goto exit;
560
goto mandos_end;
507
561
}
508
562
} else {
509
563
buffer_length += (size_t) ret;
510
564
}
511
565
}
512
566
567
if(debug){
568
fprintf(stderr, "Closing TLS session\n");
569
}
570
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
572
513
573
if (buffer_length > 0){
514
574
decrypted_buffer_size = pgp_packet_decrypt(buffer,
515
575
buffer_length,
516
576
&decrypted_buffer,
517
577
keydir);
518
578
if (decrypted_buffer_size >= 0){
579
written = 0;
519
580
while(written < (size_t) decrypted_buffer_size){
520
581
ret = (int)fwrite (decrypted_buffer + written, 1,
521
582
(size_t)decrypted_buffer_size - written,
535
596
retval = -1;
536
597
}
537
598
}
538
539
//shutdown procedure
540
541
if(debug){
542
fprintf(stderr, "Closing TLS session\n");
543
}
544
599
600
/* Shutdown procedure */
601
602
mandos_end:
545
603
free(buffer);
546
gnutls_bye (session, GNUTLS_SHUT_RDWR);
547
exit:
548
604
close(tcp_sd);
549
605
gnutls_deinit (session);
550
606
gnutls_certificate_free_credentials (mc->cred);
575
631
switch (event) {
576
632
default:
577
633
case AVAHI_RESOLVER_FAILURE:
578
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
579
" type '%s' in domain '%s': %s\n", name, type, domain,
634
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
635
" of type '%s' in domain '%s': %s\n", name, type, domain,
580
636
avahi_strerror(avahi_server_errno(mc->server)));
581
637
break;
582
638
585
641
char ip[AVAHI_ADDRESS_STR_MAX];
586
642
avahi_address_snprint(ip, sizeof(ip), address);
587
643
if(debug){
588
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
589
" port %d\n", name, host_name, ip, port);
644
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
645
" port %d\n", name, host_name, ip, interface, port);
590
646
}
591
647
int ret = start_mandos_communication(ip, port, interface, mc);
592
648
if (ret == 0){
617
673
default:
618
674
case AVAHI_BROWSER_FAILURE:
619
675
620
fprintf(stderr, "(Browser) %s\n",
676
fprintf(stderr, "(Avahi browser) %s\n",
621
677
avahi_strerror(avahi_server_errno(mc->server)));
622
678
avahi_simple_poll_quit(mc->simple_poll);
623
679
return;
624
680
625
681
case AVAHI_BROWSER_NEW:
626
/* We ignore the returned resolver object. In the callback
627
function we free it. If the server is terminated before
628
the callback function is called the server will free
629
the resolver for us. */
682
/* We ignore the returned Avahi resolver object. In the callback
683
function we free it. If the Avahi server is terminated before
684
the callback function is called the Avahi server will free the
685
resolver for us. */
630
686
631
687
if (!(avahi_s_service_resolver_new(mc->server, interface,
632
688
protocol, name, type, domain,
633
689
AVAHI_PROTO_INET6, 0,
634
690
resolve_callback, mc)))
635
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
636
avahi_strerror(avahi_server_errno(mc->server)));
691
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
692
name, avahi_strerror(avahi_server_errno(mc->server)));
637
693
break;
638
694
639
695
case AVAHI_BROWSER_REMOVE:
641
697
642
698
case AVAHI_BROWSER_ALL_FOR_NOW:
643
699
case AVAHI_BROWSER_CACHE_EXHAUSTED:
700
if(debug){
701
fprintf(stderr, "No Mandos server found, still searching...\n");
702
}
644
703
break;
645
704
}
646
705
}
666
725
}
667
726
668
727
669
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
670
AvahiServerConfig config;
728
int main(int argc, char *argv[]){
671
729
AvahiSServiceBrowser *sb = NULL;
672
730
int error;
673
731
int ret;
674
int debug_int;
675
int returncode = EXIT_SUCCESS;
732
int exitcode = EXIT_SUCCESS;
676
733
const char *interface = "eth0";
677
734
struct ifreq network;
678
735
int sd;
736
uid_t uid;
737
gid_t gid;
679
738
char *connect_to = NULL;
680
739
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
681
742
mandos_context mc = { .simple_poll = NULL, .server = NULL,
682
743
.dh_bits = 1024, .priority = "SECURE256"};
683
744
684
debug_int = debug ? 1 : 0;
685
while (true){
686
struct option long_options[] = {
687
{"debug", no_argument, &debug_int, 1},
688
{"connect", required_argument, NULL, 'c'},
689
{"interface", required_argument, NULL, 'i'},
690
{"keydir", required_argument, NULL, 'd'},
691
{"seckey", required_argument, NULL, 's'},
692
{"pubkey", required_argument, NULL, 'p'},
693
{"dh-bits", required_argument, NULL, 'D'},
694
{"priority", required_argument, NULL, 'P'},
695
{0, 0, 0, 0} };
696
697
int option_index = 0;
698
ret = getopt_long (argc, argv, "i:", long_options,
699
&option_index);
700
701
if (ret == -1){
702
break;
703
}
704
705
switch(ret){
706
case 0:
707
break;
708
case 'i':
709
interface = optarg;
710
break;
711
case 'c':
712
connect_to = optarg;
713
break;
714
case 'd':
715
keydir = optarg;
716
break;
717
case 'p':
718
pubkeyfile = optarg;
719
break;
720
case 's':
721
seckeyfile = optarg;
722
break;
723
case 'D':
724
errno = 0;
725
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
726
if (errno){
727
perror("strtol");
728
exit(EXIT_FAILURE);
745
{
746
struct argp_option options[] = {
747
{ .name = "debug", .key = 128,
748
.doc = "Debug mode", .group = 3 },
749
{ .name = "connect", .key = 'c',
750
.arg = "IP",
751
.doc = "Connect directly to a sepcified mandos server",
752
.group = 1 },
753
{ .name = "interface", .key = 'i',
754
.arg = "INTERFACE",
755
.doc = "Interface that Avahi will conntect through",
756
.group = 1 },
757
{ .name = "keydir", .key = 'd',
758
.arg = "KEYDIR",
759
.doc = "Directory where the openpgp keyring is",
760
.group = 1 },
761
{ .name = "seckey", .key = 's',
762
.arg = "SECKEY",
763
.doc = "Secret openpgp key for gnutls authentication",
764
.group = 1 },
765
{ .name = "pubkey", .key = 'p',
766
.arg = "PUBKEY",
767
.doc = "Public openpgp key for gnutls authentication",
768
.group = 2 },
769
{ .name = "dh-bits", .key = 129,
770
.arg = "BITS",
771
.doc = "dh-bits to use in gnutls communication",
772
.group = 2 },
773
{ .name = "priority", .key = 130,
774
.arg = "PRIORITY",
775
.doc = "GNUTLS priority", .group = 1 },
776
{ .name = NULL }
777
};
778
779
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. */
784
switch (key) {
785
case 128:
786
debug = true;
787
break;
788
case 'c':
789
connect_to = arg;
790
break;
791
case 'i':
792
interface = arg;
793
break;
794
case 'd':
795
keydir = arg;
796
break;
797
case 's':
798
seckeyfile = arg;
799
break;
800
case 'p':
801
pubkeyfile = arg;
802
break;
803
case 129:
804
errno = 0;
805
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
806
if (errno){
807
perror("strtol");
808
exit(EXIT_FAILURE);
809
}
810
break;
811
case 130:
812
mc.priority = arg;
813
break;
814
case ARGP_KEY_ARG:
815
argp_usage (state);
816
break;
817
case ARGP_KEY_END:
818
break;
819
default:
820
return ARGP_ERR_UNKNOWN;
729
821
}
730
break;
731
case 'P':
732
mc.priority = optarg;
733
break;
734
case '?':
735
default:
736
exit(EXIT_FAILURE);
822
return 0;
737
823
}
824
825
struct argp argp = { .options = options, .parser = parse_opt,
826
.args_doc = "",
827
.doc = "Mandos client -- Get and decrypt"
828
" passwords from mandos server" };
829
argp_parse (&argp, argc, argv, 0, 0, NULL);
738
830
}
739
debug = debug_int ? true : false;
740
831
741
832
pubkeyfile = combinepath(keydir, pubkeyfile);
742
833
if (pubkeyfile == NULL){
743
834
perror("combinepath");
744
returncode = EXIT_FAILURE;
745
goto exit;
835
exitcode = EXIT_FAILURE;
836
goto end;
746
837
}
747
838
748
839
seckeyfile = combinepath(keydir, seckeyfile);
749
840
if (seckeyfile == NULL){
750
841
perror("combinepath");
751
goto exit;
842
goto end;
843
}
844
845
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
846
if (ret == -1){
847
fprintf(stderr, "init_gnutls_global\n");
848
goto end;
849
}
850
851
uid = getuid();
852
gid = getgid();
853
854
ret = setuid(uid);
855
if (ret == -1){
856
perror("setuid");
857
}
858
859
setgid(gid);
860
if (ret == -1){
861
perror("setgid");
752
862
}
753
863
754
864
if_index = (AvahiIfIndex) if_nametoindex(interface);
763
873
char *address = strrchr(connect_to, ':');
764
874
if(address == NULL){
765
875
fprintf(stderr, "No colon in address\n");
766
exit(EXIT_FAILURE);
876
exitcode = EXIT_FAILURE;
877
goto end;
767
878
}
768
879
errno = 0;
769
880
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
770
881
if(errno){
771
882
perror("Bad port number");
772
exit(EXIT_FAILURE);
883
exitcode = EXIT_FAILURE;
884
goto end;
773
885
}
774
886
*address = '\0';
775
887
address = connect_to;
776
888
ret = start_mandos_communication(address, port, if_index, &mc);
777
889
if(ret < 0){
778
exit(EXIT_FAILURE);
890
exitcode = EXIT_FAILURE;
779
891
} else {
780
exit(EXIT_SUCCESS);
892
exitcode = EXIT_SUCCESS;
781
893
}
894
goto end;
782
895
}
783
896
784
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
785
if(sd < 0) {
786
perror("socket");
787
returncode = EXIT_FAILURE;
788
goto exit;
789
}
790
strcpy(network.ifr_name, interface); /* Spurious warning */
791
ret = ioctl(sd, SIOCGIFFLAGS, &network);
792
if(ret == -1){
793
794
perror("ioctl SIOCGIFFLAGS");
795
returncode = EXIT_FAILURE;
796
goto exit;
797
}
798
if((network.ifr_flags & IFF_UP) == 0){
799
network.ifr_flags |= IFF_UP;
800
ret = ioctl(sd, SIOCSIFFLAGS, &network);
897
/* If the interface is down, bring it up */
898
{
899
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
900
if(sd < 0) {
901
perror("socket");
902
exitcode = EXIT_FAILURE;
903
goto end;
904
}
905
strcpy(network.ifr_name, interface); /* Spurious warning */
906
ret = ioctl(sd, SIOCGIFFLAGS, &network);
801
907
if(ret == -1){
802
perror("ioctl SIOCSIFFLAGS");
803
returncode = EXIT_FAILURE;
804
goto exit;
805
}
908
perror("ioctl SIOCGIFFLAGS");
909
exitcode = EXIT_FAILURE;
910
goto end;
911
}
912
if((network.ifr_flags & IFF_UP) == 0){
913
network.ifr_flags |= IFF_UP;
914
ret = ioctl(sd, SIOCSIFFLAGS, &network);
915
if(ret == -1){
916
perror("ioctl SIOCSIFFLAGS");
917
exitcode = EXIT_FAILURE;
918
goto end;
919
}
920
}
921
close(sd);
806
922
}
807
close(sd);
808
923
809
924
if (not debug){
810
925
avahi_set_log_function(empty_log);
811
926
}
812
927
813
/* Initialize the psuedo-RNG */
928
/* Initialize the pseudo-RNG for Avahi */
814
929
srand((unsigned int) time(NULL));
815
816
/* Allocate main loop object */
817
if (!(mc.simple_poll = avahi_simple_poll_new())) {
818
fprintf(stderr, "Failed to create simple poll object.\n");
819
returncode = EXIT_FAILURE;
820
goto exit;
821
}
822
823
/* Do not publish any local records */
824
avahi_server_config_init(&config);
825
config.publish_hinfo = 0;
826
config.publish_addresses = 0;
827
config.publish_workstation = 0;
828
config.publish_domain = 0;
829
830
/* Allocate a new server */
831
mc.server=avahi_server_new(avahi_simple_poll_get(mc.simple_poll),
832
&config, NULL, NULL, &error);
833
834
/* Free the configuration data */
835
avahi_server_config_free(&config);
836
837
/* Check if creating the server object succeeded */
838
if (!mc.server) {
839
fprintf(stderr, "Failed to create server: %s\n",
930
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"
935
" object.\n");
936
exitcode = EXIT_FAILURE;
937
goto end;
938
}
939
940
{
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;
948
949
/* Allocate a new server */
950
mc.server = avahi_server_new(avahi_simple_poll_get
951
(mc.simple_poll), &config, NULL,
952
NULL, &error);
953
954
/* Free the Avahi configuration data */
955
avahi_server_config_free(&config);
956
}
957
958
/* Check if creating the Avahi server object succeeded */
959
if (mc.server == NULL) {
960
fprintf(stderr, "Failed to create Avahi server: %s\n",
840
961
avahi_strerror(error));
841
returncode = EXIT_FAILURE;
842
goto exit;
962
exitcode = EXIT_FAILURE;
963
goto end;
843
964
}
844
965
845
/* Create the service browser */
966
/* Create the Avahi service browser */
846
967
sb = avahi_s_service_browser_new(mc.server, if_index,
847
968
AVAHI_PROTO_INET6,
848
969
"_mandos._tcp", NULL, 0,
849
970
browse_callback, &mc);
850
if (!sb) {
971
if (sb == NULL) {
851
972
fprintf(stderr, "Failed to create service browser: %s\n",
852
973
avahi_strerror(avahi_server_errno(mc.server)));
853
returncode = EXIT_FAILURE;
854
goto exit;
974
exitcode = EXIT_FAILURE;
975
goto end;
855
976
}
856
977
857
978
/* Run the main loop */
858
979
859
980
if (debug){
860
fprintf(stderr, "Starting avahi loop search\n");
981
fprintf(stderr, "Starting Avahi loop search\n");
861
982
}
862
983
863
984
avahi_simple_poll_loop(mc.simple_poll);
864
985
865
exit:
986
end:
866
987
867
988
if (debug){
868
989
fprintf(stderr, "%s exiting\n", argv[0]);
869
990
}
870
991
871
992
/* Cleanup things */
872
if (sb)
993
if (sb != NULL)
873
994
avahi_s_service_browser_free(sb);
874
995
875
if (mc.server)
996
if (mc.server != NULL)
876
997
avahi_server_free(mc.server);
877
998
878
if (mc.simple_poll)
999
if (mc.simple_poll != NULL)
879
1000
avahi_simple_poll_free(mc.simple_poll);
880
1001
free(pubkeyfile);
881
1002
free(seckeyfile);
882
1003
883
return returncode;
1004
return exitcode;
884
1005
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0