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- Committer: Teddy Hogeborn
- Date: 2008-08-03 03:33:56 UTC
- Revision ID: teddy@fukt.bsnet.se-20080803033356-6aemgj0g0hoz91ow
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
On debug, show
decrypted plaintext
in hexadecimal. Free
the GPGME data
buffers even on
errors.
On debug, show
decrypted plaintext
in hexadecimal. Free
the GPGME data
buffers even on
errors.
- files modified:
- TODO
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
37
35
#include <stdio.h>
38
36
#include <assert.h>
39
37
#include <stdlib.h>
51
49
#include <avahi-common/malloc.h>
52
50
#include <avahi-common/error.h>
53
51
54
/* Mandos client part */
52
//mandos client part
55
53
#include <sys/types.h> /* socket(), inet_pton() */
56
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
55
struct in6_addr, inet_pton() */
64
62
#include <string.h> /* memset */
65
63
#include <arpa/inet.h> /* inet_pton() */
66
64
#include <iso646.h> /* not */
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 */
65
66
// gpgme
72
67
#include <errno.h> /* perror() */
73
68
#include <gpgme.h>
74
69
70
// getopt_long
71
#include <getopt.h>
72
75
73
#define BUFFER_SIZE 256
76
74
75
static const char *keydir = "/conf/conf.d/mandos";
76
static const char *pubkeyfile = "pubkey.txt";
77
static const char *seckeyfile = "seckey.txt";
78
77
79
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
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
80
83
/* Used for passing in values through the Avahi callback functions */
81
/* Used for passing in values through all the callback functions */
84
82
typedef struct {
85
83
AvahiSimplePoll *simple_poll;
86
84
AvahiServer *server;
87
85
gnutls_certificate_credentials_t cred;
88
86
unsigned int dh_bits;
89
gnutls_dh_params_t dh_params;
90
87
const char *priority;
91
88
} mandos_context;
92
89
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
110
90
/*
111
91
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
92
* Returns -1 on error
119
99
gpgme_ctx_t ctx;
120
100
gpgme_error_t rc;
121
101
ssize_t ret;
122
size_t plaintext_capacity = 0;
102
ssize_t plaintext_capacity = 0;
123
103
ssize_t plaintext_length = 0;
124
104
gpgme_engine_info_t engine_info;
125
105
235
215
236
216
*plaintext = NULL;
237
217
while(true){
238
plaintext_capacity = adjustbuffer(plaintext,
239
(size_t)plaintext_length,
240
plaintext_capacity);
241
if (plaintext_capacity == 0){
242
perror("adjustbuffer");
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");
243
224
plaintext_length = -1;
244
225
goto decrypt_end;
226
}
227
plaintext_capacity += BUFFER_SIZE;
245
228
}
246
229
247
230
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
261
244
262
245
if(debug){
263
246
fprintf(stderr, "Decrypted password is: ");
264
for(ssize_t i = 0; i < plaintext_length; i++){
247
for(size_t i = 0; i < plaintext_length; i++){
265
248
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
266
249
}
267
250
fprintf(stderr, "\n");
284
267
return ret;
285
268
}
286
269
287
/* GnuTLS log function callback */
288
270
static void debuggnutls(__attribute__((unused)) int level,
289
271
const char* string){
290
fprintf(stderr, "GnuTLS: %s", string);
272
fprintf(stderr, "%s", string);
291
273
}
292
274
293
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
275
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
276
gnutls_dh_params_t *dh_params){
277
const char *err;
296
278
int ret;
297
279
298
280
if(debug){
301
283
302
284
if ((ret = gnutls_global_init ())
303
285
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
286
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
306
287
return -1;
307
288
}
308
289
309
290
if (debug){
310
/* "Use a log level over 10 to enable all debugging options."
311
* - GnuTLS manual
312
*/
313
291
gnutls_global_set_log_level(11);
314
292
gnutls_global_set_log_function(debuggnutls);
315
293
}
316
294
317
/* OpenPGP credentials */
295
/* openpgp credentials */
318
296
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
319
297
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
298
fprintf (stderr, "memory error: %s\n",
321
299
safer_gnutls_strerror(ret));
322
300
return -1;
323
301
}
331
309
ret = gnutls_certificate_set_openpgp_key_file
332
310
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
333
311
if (ret != GNUTLS_E_SUCCESS) {
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",
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",
338
317
safer_gnutls_strerror(ret));
339
318
return -1;
340
319
}
341
320
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){
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){
367
341
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
368
342
safer_gnutls_strerror(ret));
369
343
}
370
344
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
}
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;
380
351
}
381
352
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",
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",
386
357
safer_gnutls_strerror(ret));
387
358
return -1;
388
359
}
396
367
return 0;
397
368
}
398
369
399
/* Avahi log function callback */
400
370
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
401
371
__attribute__((unused)) const char *txt){}
402
372
403
/* Called when a Mandos server is found */
404
373
static int start_mandos_communication(const char *ip, uint16_t port,
405
374
AvahiIfIndex if_index,
406
375
mandos_context *mc){
407
376
int ret, tcp_sd;
408
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
377
struct sockaddr_in6 to;
409
378
char *buffer = NULL;
410
379
char *decrypted_buffer;
411
380
size_t buffer_length = 0;
412
381
size_t buffer_capacity = 0;
413
382
ssize_t decrypted_buffer_size;
414
size_t written;
383
size_t written = 0;
415
384
int retval = 0;
416
385
char interface[IF_NAMESIZE];
417
386
gnutls_session_t session;
418
419
ret = init_gnutls_session (mc, &session);
420
if (ret != 0){
421
return -1;
422
}
387
gnutls_dh_params_t dh_params;
423
388
424
389
if(debug){
425
390
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
441
406
}
442
407
443
408
memset(&to,0,sizeof(to)); /* Spurious warning */
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);
409
to.sin6_family = AF_INET6;
410
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
448
411
if (ret < 0 ){
449
412
perror("inet_pton");
450
413
return -1;
453
416
fprintf(stderr, "Bad address: %s\n", ip);
454
417
return -1;
455
418
}
456
to.in6.sin6_port = htons(port); /* Spurious warning */
419
to.sin6_port = htons(port); /* Spurious warning */
457
420
458
to.in6.sin6_scope_id = (uint32_t)if_index;
421
to.sin6_scope_id = (uint32_t)if_index;
459
422
460
423
if(debug){
461
424
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
462
425
char addrstr[INET6_ADDRSTRLEN] = "";
463
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
426
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
464
427
sizeof(addrstr)) == NULL){
465
428
perror("inet_ntop");
466
429
} else {
470
433
}
471
434
}
472
435
473
ret = connect(tcp_sd, &to.in, sizeof(to));
436
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
474
437
if (ret < 0){
475
438
perror("connect");
476
439
return -1;
477
440
}
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
}
441
442
ret = initgnutls (mc, &session, &dh_params);
443
if (ret != 0){
444
retval = -1;
445
return -1;
501
446
}
502
447
448
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
449
503
450
if(debug){
504
451
fprintf(stderr, "Establishing TLS session with %s\n", ip);
505
452
}
506
453
507
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
508
509
454
ret = gnutls_handshake (session);
510
455
511
456
if (ret != GNUTLS_E_SUCCESS){
512
457
if(debug){
513
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
458
fprintf(stderr, "\n*** Handshake failed ***\n");
514
459
gnutls_perror (ret);
515
460
}
516
461
retval = -1;
517
goto mandos_end;
462
goto exit;
518
463
}
519
464
520
/* Read OpenPGP packet that contains the wanted password */
465
//Retrieve OpenPGP packet that contains the wanted password
521
466
522
467
if(debug){
523
468
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
525
470
}
526
471
527
472
while(true){
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;
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;
534
480
}
535
481
536
482
ret = gnutls_record_recv(session, buffer+buffer_length,
546
492
case GNUTLS_E_REHANDSHAKE:
547
493
ret = gnutls_handshake (session);
548
494
if (ret < 0){
549
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
495
fprintf(stderr, "\n*** Handshake failed ***\n");
550
496
gnutls_perror (ret);
551
497
retval = -1;
552
goto mandos_end;
498
goto exit;
553
499
}
554
500
break;
555
501
default:
556
502
fprintf(stderr, "Unknown error while reading data from"
557
" encrypted session with Mandos server\n");
503
" encrypted session with mandos server\n");
558
504
retval = -1;
559
505
gnutls_bye (session, GNUTLS_SHUT_RDWR);
560
goto mandos_end;
506
goto exit;
561
507
}
562
508
} else {
563
509
buffer_length += (size_t) ret;
564
510
}
565
511
}
566
512
567
if(debug){
568
fprintf(stderr, "Closing TLS session\n");
569
}
570
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
572
573
513
if (buffer_length > 0){
574
514
decrypted_buffer_size = pgp_packet_decrypt(buffer,
575
515
buffer_length,
576
516
&decrypted_buffer,
577
517
keydir);
578
518
if (decrypted_buffer_size >= 0){
579
written = 0;
580
519
while(written < (size_t) decrypted_buffer_size){
581
520
ret = (int)fwrite (decrypted_buffer + written, 1,
582
521
(size_t)decrypted_buffer_size - written,
596
535
retval = -1;
597
536
}
598
537
}
599
600
/* Shutdown procedure */
601
602
mandos_end:
538
539
//shutdown procedure
540
541
if(debug){
542
fprintf(stderr, "Closing TLS session\n");
543
}
544
603
545
free(buffer);
546
gnutls_bye (session, GNUTLS_SHUT_RDWR);
547
exit:
604
548
close(tcp_sd);
605
549
gnutls_deinit (session);
606
550
gnutls_certificate_free_credentials (mc->cred);
631
575
switch (event) {
632
576
default:
633
577
case AVAHI_RESOLVER_FAILURE:
634
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
635
" of type '%s' in domain '%s': %s\n", name, type, domain,
578
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
579
" type '%s' in domain '%s': %s\n", name, type, domain,
636
580
avahi_strerror(avahi_server_errno(mc->server)));
637
581
break;
638
582
641
585
char ip[AVAHI_ADDRESS_STR_MAX];
642
586
avahi_address_snprint(ip, sizeof(ip), address);
643
587
if(debug){
644
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
645
" port %d\n", name, host_name, ip, interface, port);
588
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
589
" port %d\n", name, host_name, ip, port);
646
590
}
647
591
int ret = start_mandos_communication(ip, port, interface, mc);
648
592
if (ret == 0){
673
617
default:
674
618
case AVAHI_BROWSER_FAILURE:
675
619
676
fprintf(stderr, "(Avahi browser) %s\n",
620
fprintf(stderr, "(Browser) %s\n",
677
621
avahi_strerror(avahi_server_errno(mc->server)));
678
622
avahi_simple_poll_quit(mc->simple_poll);
679
623
return;
680
624
681
625
case AVAHI_BROWSER_NEW:
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. */
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. */
686
630
687
631
if (!(avahi_s_service_resolver_new(mc->server, interface,
688
632
protocol, name, type, domain,
689
633
AVAHI_PROTO_INET6, 0,
690
634
resolve_callback, mc)))
691
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
692
name, avahi_strerror(avahi_server_errno(mc->server)));
635
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
636
avahi_strerror(avahi_server_errno(mc->server)));
693
637
break;
694
638
695
639
case AVAHI_BROWSER_REMOVE:
697
641
698
642
case AVAHI_BROWSER_ALL_FOR_NOW:
699
643
case AVAHI_BROWSER_CACHE_EXHAUSTED:
700
if(debug){
701
fprintf(stderr, "No Mandos server found, still searching...\n");
702
}
703
644
break;
704
645
}
705
646
}
725
666
}
726
667
727
668
728
int main(int argc, char *argv[]){
669
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
670
AvahiServerConfig config;
729
671
AvahiSServiceBrowser *sb = NULL;
730
672
int error;
731
673
int ret;
732
int exitcode = EXIT_SUCCESS;
674
int debug_int;
675
int returncode = EXIT_SUCCESS;
733
676
const char *interface = "eth0";
734
677
struct ifreq network;
735
678
int sd;
736
uid_t uid;
737
gid_t gid;
738
679
char *connect_to = NULL;
739
680
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
742
681
mandos_context mc = { .simple_poll = NULL, .server = NULL,
743
682
.dh_bits = 1024, .priority = "SECURE256"};
744
683
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;
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);
821
729
}
822
return 0;
730
break;
731
case 'P':
732
mc.priority = optarg;
733
break;
734
case '?':
735
default:
736
exit(EXIT_FAILURE);
823
737
}
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);
830
738
}
831
739
debug = debug_int ? true : false;
740
832
741
pubkeyfile = combinepath(keydir, pubkeyfile);
833
742
if (pubkeyfile == NULL){
834
743
perror("combinepath");
835
exitcode = EXIT_FAILURE;
836
goto end;
744
returncode = EXIT_FAILURE;
745
goto exit;
837
746
}
838
747
839
748
seckeyfile = combinepath(keydir, seckeyfile);
840
749
if (seckeyfile == NULL){
841
750
perror("combinepath");
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");
751
goto exit;
862
752
}
863
753
864
754
if_index = (AvahiIfIndex) if_nametoindex(interface);
873
763
char *address = strrchr(connect_to, ':');
874
764
if(address == NULL){
875
765
fprintf(stderr, "No colon in address\n");
876
exitcode = EXIT_FAILURE;
877
goto end;
766
exit(EXIT_FAILURE);
878
767
}
879
768
errno = 0;
880
769
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
881
770
if(errno){
882
771
perror("Bad port number");
883
exitcode = EXIT_FAILURE;
884
goto end;
772
exit(EXIT_FAILURE);
885
773
}
886
774
*address = '\0';
887
775
address = connect_to;
888
776
ret = start_mandos_communication(address, port, if_index, &mc);
889
777
if(ret < 0){
890
exitcode = EXIT_FAILURE;
778
exit(EXIT_FAILURE);
891
779
} else {
892
exitcode = EXIT_SUCCESS;
780
exit(EXIT_SUCCESS);
893
781
}
894
goto end;
895
782
}
896
783
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);
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);
907
801
if(ret == -1){
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);
802
perror("ioctl SIOCSIFFLAGS");
803
returncode = EXIT_FAILURE;
804
goto exit;
805
}
922
806
}
807
close(sd);
923
808
924
809
if (not debug){
925
810
avahi_set_log_function(empty_log);
926
811
}
927
812
928
/* Initialize the pseudo-RNG for Avahi */
813
/* Initialize the psuedo-RNG */
929
814
srand((unsigned int) time(NULL));
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",
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",
961
840
avahi_strerror(error));
962
exitcode = EXIT_FAILURE;
963
goto end;
841
returncode = EXIT_FAILURE;
842
goto exit;
964
843
}
965
844
966
/* Create the Avahi service browser */
845
/* Create the service browser */
967
846
sb = avahi_s_service_browser_new(mc.server, if_index,
968
847
AVAHI_PROTO_INET6,
969
848
"_mandos._tcp", NULL, 0,
970
849
browse_callback, &mc);
971
if (sb == NULL) {
850
if (!sb) {
972
851
fprintf(stderr, "Failed to create service browser: %s\n",
973
852
avahi_strerror(avahi_server_errno(mc.server)));
974
exitcode = EXIT_FAILURE;
975
goto end;
853
returncode = EXIT_FAILURE;
854
goto exit;
976
855
}
977
856
978
857
/* Run the main loop */
979
858
980
859
if (debug){
981
fprintf(stderr, "Starting Avahi loop search\n");
860
fprintf(stderr, "Starting avahi loop search\n");
982
861
}
983
862
984
863
avahi_simple_poll_loop(mc.simple_poll);
985
864
986
end:
865
exit:
987
866
988
867
if (debug){
989
868
fprintf(stderr, "%s exiting\n", argv[0]);
990
869
}
991
870
992
871
/* Cleanup things */
993
if (sb != NULL)
872
if (sb)
994
873
avahi_s_service_browser_free(sb);
995
874
996
if (mc.server != NULL)
875
if (mc.server)
997
876
avahi_server_free(mc.server);
998
877
999
if (mc.simple_poll != NULL)
878
if (mc.simple_poll)
1000
879
avahi_simple_poll_free(mc.simple_poll);
1001
880
free(pubkeyfile);
1002
881
free(seckeyfile);
1003
882
1004
return exitcode;
883
return returncode;
1005
884
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0