To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to plugins.d/password-request.c
- browse files at revision 165
- compare with another revision
- download diff
- download tarball
- view history from revision 165
- Committer: Teddy Hogeborn
- Date: 2008-09-05 18:37:28 UTC
- Revision ID: teddy@fukt.bsnet.se-20080905183728-l0m8v3vqa302uwrw
* mandos (main): Use EAFP with pidfile.
- files added:
- .bzrignore
- files removed:
- network-protocol.txt
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
39
#include <stdint.h> /* uint16_t, uint32_t */
40
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
42
srand() */
43
43
#include <stdbool.h> /* bool, true */
44
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
45
strerror(), asprintf(), strcpy() */
46
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
48
sockaddr_in6, PF_INET6,
51
49
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t */
50
uid_t, gid_t, open(), opendir(), DIR */
51
#include <sys/stat.h> /* open() */
53
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
53
struct in6_addr, inet_pton(),
55
54
connect() */
55
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
56
58
#include <assert.h> /* assert() */
57
59
#include <errno.h> /* perror(), errno */
58
60
#include <time.h> /* time() */
59
61
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
60
62
SIOCSIFFLAGS, if_indextoname(),
61
63
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
62
65
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
63
66
getuid(), getgid(), setuid(),
64
67
setgid() */
65
#include <netinet/in.h>
66
68
#include <arpa/inet.h> /* inet_pton(), htons */
67
69
#include <iso646.h> /* not, and */
68
70
#include <argp.h> /* struct argp_option, error_t, struct
82
84
#include <avahi-common/error.h>
83
85
84
86
/* GnuTLS */
85
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
87
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
88
functions:
86
89
gnutls_*
87
90
init_gnutls_session(),
88
91
GNUTLS_* */
90
93
GNUTLS_OPENPGP_FMT_BASE64 */
91
94
92
95
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and functions
96
#include <gpgme.h> /* All GPGME types, constants and
97
functions:
94
98
gpgme_*
95
99
GPGME_PROTOCOL_OpenPGP,
96
100
GPG_ERR_NO_* */
97
101
98
102
#define BUFFER_SIZE 256
99
103
104
/*
105
#define PATHDIR "/conf/conf.d/mandos"
106
*/
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pupkey.txt"
111
100
112
bool debug = false;
101
static const char *keydir = "/conf/conf.d/mandos";
102
113
static const char mandos_protocol_version[] = "1";
103
114
const char *argp_program_version = "password-request 1.0";
104
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
111
122
unsigned int dh_bits;
112
123
gnutls_dh_params_t dh_params;
113
124
const char *priority;
125
gpgme_ctx_t ctx;
114
126
} mandos_context;
115
127
116
128
/*
131
143
}
132
144
133
145
/*
134
* Decrypt OpenPGP data using keyrings in HOMEDIR.
135
* Returns -1 on error
146
* Initialize GPGME.
136
147
*/
137
static ssize_t pgp_packet_decrypt (const char *cryptotext,
138
size_t crypto_size,
139
char **plaintext,
140
const char *homedir){
141
gpgme_data_t dh_crypto, dh_plain;
142
gpgme_ctx_t ctx;
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
143
151
gpgme_error_t rc;
144
ssize_t ret;
145
size_t plaintext_capacity = 0;
146
ssize_t plaintext_length = 0;
147
152
gpgme_engine_info_t engine_info;
153
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if (rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
148
189
149
190
if (debug){
150
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
191
fprintf(stderr, "Initialize gpgme\n");
151
192
}
152
193
153
194
/* Init GPGME */
154
195
gpgme_check_version(NULL);
155
196
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
156
197
if (rc != GPG_ERR_NO_ERROR){
157
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
158
199
gpgme_strsource(rc), gpgme_strerror(rc));
159
return -1;
200
return false;
160
201
}
161
162
/* Set GPGME home directory for the OpenPGP engine only */
202
203
/* Set GPGME home directory for the OpenPGP engine only */
163
204
rc = gpgme_get_engine_info (&engine_info);
164
205
if (rc != GPG_ERR_NO_ERROR){
165
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
166
207
gpgme_strsource(rc), gpgme_strerror(rc));
167
return -1;
208
return false;
168
209
}
169
210
while(engine_info != NULL){
170
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
171
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
172
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
173
214
break;
174
215
}
175
216
engine_info = engine_info->next;
176
217
}
177
218
if(engine_info == NULL){
178
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
179
return -1;
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if (rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if (not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if (debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
180
254
}
181
255
182
256
/* Create new GPGME data buffer from memory cryptotext */
197
271
return -1;
198
272
}
199
273
200
/* Create new GPGME "context" */
201
rc = gpgme_new(&ctx);
202
if (rc != GPG_ERR_NO_ERROR){
203
fprintf(stderr, "bad gpgme_new: %s: %s\n",
204
gpgme_strsource(rc), gpgme_strerror(rc));
205
plaintext_length = -1;
206
goto decrypt_end;
207
}
208
209
274
/* Decrypt data from the cryptotext data buffer to the plaintext
210
275
data buffer */
211
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
212
277
if (rc != GPG_ERR_NO_ERROR){
213
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
214
279
gpgme_strsource(rc), gpgme_strerror(rc));
215
280
plaintext_length = -1;
281
if (debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if (result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
216
309
goto decrypt_end;
217
310
}
218
311
220
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
221
314
}
222
315
223
if (debug){
224
gpgme_decrypt_result_t result;
225
result = gpgme_op_decrypt_result(ctx);
226
if (result == NULL){
227
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
228
} else {
229
fprintf(stderr, "Unsupported algorithm: %s\n",
230
result->unsupported_algorithm);
231
fprintf(stderr, "Wrong key usage: %d\n",
232
result->wrong_key_usage);
233
if(result->file_name != NULL){
234
fprintf(stderr, "File name: %s\n", result->file_name);
235
}
236
gpgme_recipient_t recipient;
237
recipient = result->recipients;
238
if(recipient){
239
while(recipient != NULL){
240
fprintf(stderr, "Public key algorithm: %s\n",
241
gpgme_pubkey_algo_name(recipient->pubkey_algo));
242
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
243
fprintf(stderr, "Secret key available: %s\n",
244
recipient->status == GPG_ERR_NO_SECKEY
245
? "No" : "Yes");
246
recipient = recipient->next;
247
}
248
}
249
}
250
}
251
252
316
/* Seek back to the beginning of the GPGME plaintext data buffer */
253
317
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
254
318
perror("pgpme_data_seek");
281
345
}
282
346
plaintext_length += ret;
283
347
}
284
348
285
349
if(debug){
286
350
fprintf(stderr, "Decrypted password is: ");
287
351
for(ssize_t i = 0; i < plaintext_length; i++){
301
365
}
302
366
303
367
static const char * safer_gnutls_strerror (int value) {
304
const char *ret = gnutls_strerror (value);
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
305
369
if (ret == NULL)
306
370
ret = "(unknown)";
307
371
return ret;
314
378
}
315
379
316
380
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfile,
318
const char *seckeyfile){
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
319
383
int ret;
320
384
321
385
if(debug){
340
404
/* OpenPGP credentials */
341
405
gnutls_certificate_allocate_credentials(&mc->cred);
342
406
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n",
407
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
344
409
safer_gnutls_strerror(ret));
345
410
gnutls_global_deinit ();
346
411
return -1;
347
412
}
348
413
349
414
if(debug){
350
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
351
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
352
seckeyfile);
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
353
418
}
354
419
355
420
ret = gnutls_certificate_set_openpgp_key_file
356
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
357
423
if (ret != GNUTLS_E_SUCCESS) {
358
424
fprintf(stderr,
359
425
"Error[%d] while reading the OpenPGP key pair ('%s',"
360
" '%s')\n", ret, pubkeyfile, seckeyfile);
361
fprintf(stdout, "The GnuTLS error is: %s\n",
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
362
428
safer_gnutls_strerror(ret));
363
429
goto globalfail;
364
430
}
378
444
}
379
445
380
446
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
381
447
382
448
return 0;
383
449
384
450
globalfail:
385
451
386
452
gnutls_certificate_free_credentials(mc->cred);
387
453
gnutls_global_deinit();
388
454
return -1;
389
390
455
}
391
456
392
457
static int init_gnutls_session(mandos_context *mc,
455
520
}
456
521
457
522
if(debug){
458
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
459
ip, port);
523
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
524
"\n", ip, port);
460
525
}
461
526
462
527
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
464
529
perror("socket");
465
530
return -1;
466
531
}
467
532
468
533
if(debug){
469
534
if(if_indextoname((unsigned int)if_index, interface) == NULL){
470
535
perror("if_indextoname");
473
538
fprintf(stderr, "Binding to interface %s\n", interface);
474
539
}
475
540
476
memset(&to,0,sizeof(to)); /* Spurious warning */
541
memset(&to, 0, sizeof(to));
477
542
to.in6.sin6_family = AF_INET6;
478
543
/* It would be nice to have a way to detect if we were passed an
479
544
IPv4 address here. Now we assume an IPv6 address. */
486
551
fprintf(stderr, "Bad address: %s\n", ip);
487
552
return -1;
488
553
}
489
to.in6.sin6_port = htons(port); /* Spurious warning */
554
to.in6.sin6_port = htons(port); /* Spurious warning */
490
555
491
556
to.in6.sin6_scope_id = (uint32_t)if_index;
492
557
493
558
if(debug){
494
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
559
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
560
port);
495
561
char addrstr[INET6_ADDRSTRLEN] = "";
496
562
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
497
563
sizeof(addrstr)) == NULL){
508
574
perror("connect");
509
575
return -1;
510
576
}
511
577
512
578
const char *out = mandos_protocol_version;
513
579
written = 0;
514
580
while (true){
532
598
}
533
599
}
534
600
}
535
601
536
602
if(debug){
537
603
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
604
}
539
605
540
606
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
607
542
608
do{
543
609
ret = gnutls_handshake (session);
544
610
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
558
624
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
559
625
ip);
560
626
}
561
627
562
628
while(true){
563
629
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
630
buffer_capacity);
608
674
gnutls_bye (session, GNUTLS_SHUT_RDWR);
609
675
610
676
if (buffer_length > 0){
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
612
678
buffer_length,
613
&decrypted_buffer,
614
keydir);
679
&decrypted_buffer);
615
680
if (decrypted_buffer_size >= 0){
616
681
written = 0;
617
682
while(written < (size_t) decrypted_buffer_size){
632
697
} else {
633
698
retval = -1;
634
699
}
700
} else {
701
retval = -1;
635
702
}
636
703
637
704
/* Shutdown procedure */
638
705
639
706
mandos_end:
640
707
free(buffer);
641
close(tcp_sd);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
642
712
gnutls_deinit (session);
643
713
return retval;
644
714
}
658
728
flags,
659
729
void* userdata) {
660
730
mandos_context *mc = userdata;
661
assert(r); /* Spurious warning */
731
assert(r);
662
732
663
733
/* Called whenever a service has been resolved successfully or
664
734
timed out */
676
746
char ip[AVAHI_ADDRESS_STR_MAX];
677
747
avahi_address_snprint(ip, sizeof(ip), address);
678
748
if(debug){
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
680
" port %d\n", name, host_name, ip, interface, port);
749
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
750
PRIu16 ") on port %d\n", name, host_name, ip,
751
interface, port);
681
752
}
682
753
int ret = start_mandos_communication(ip, port, interface, mc);
683
754
if (ret == 0){
684
exit(EXIT_SUCCESS);
755
avahi_simple_poll_quit(mc->simple_poll);
685
756
}
686
757
}
687
758
}
699
770
flags,
700
771
void* userdata) {
701
772
mandos_context *mc = userdata;
702
assert(b); /* Spurious warning */
773
assert(b);
703
774
704
775
/* Called whenever a new services becomes available on the LAN or
705
776
is removed from the LAN */
739
810
}
740
811
}
741
812
742
/* Combines file name and path and returns the malloced new
743
string. some sane checks could/should be added */
744
static const char *combinepath(const char *first, const char *second){
745
size_t f_len = strlen(first);
746
size_t s_len = strlen(second);
747
char *tmp = malloc(f_len + s_len + 2);
748
if (tmp == NULL){
749
return NULL;
750
}
751
if(f_len > 0){
752
memcpy(tmp, first, f_len); /* Spurious warning */
753
}
754
tmp[f_len] = '/';
755
if(s_len > 0){
756
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
757
}
758
tmp[f_len + 1 + s_len] = '\0';
759
return tmp;
760
}
761
762
763
813
int main(int argc, char *argv[]){
764
814
AvahiSServiceBrowser *sb = NULL;
765
815
int error;
771
821
uid_t uid;
772
822
gid_t gid;
773
823
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
774
825
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
775
const char *pubkeyfile = "pubkey.txt";
776
const char *seckeyfile = "seckey.txt";
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
777
829
mandos_context mc = { .simple_poll = NULL, .server = NULL,
778
.dh_bits = 1024, .priority = "SECURE256"};
830
.dh_bits = 1024, .priority = "SECURE256"
831
":!CTYPE-X.509:+CTYPE-OPENPGP" };
779
832
bool gnutls_initalized = false;
833
bool pgpme_initalized = false;
780
834
781
835
{
782
836
struct argp_option options[] = {
783
837
{ .name = "debug", .key = 128,
784
838
.doc = "Debug mode", .group = 3 },
785
839
{ .name = "connect", .key = 'c',
786
.arg = "IP",
787
.doc = "Connect directly to a sepcified mandos server",
840
.arg = "ADDRESS:PORT",
841
.doc = "Connect directly to a specific Mandos server",
788
842
.group = 1 },
789
843
{ .name = "interface", .key = 'i',
790
.arg = "INTERFACE",
791
.doc = "Interface that Avahi will conntect through",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "KEYDIR",
795
.doc = "Directory where the openpgp keyring is",
844
.arg = "NAME",
845
.doc = "Interface that will be used to search for Mandos"
846
" servers",
796
847
.group = 1 },
797
848
{ .name = "seckey", .key = 's',
798
.arg = "SECKEY",
799
.doc = "Secret openpgp key for gnutls authentication",
849
.arg = "FILE",
850
.doc = "OpenPGP secret key file base name",
800
851
.group = 1 },
801
852
{ .name = "pubkey", .key = 'p',
802
.arg = "PUBKEY",
803
.doc = "Public openpgp key for gnutls authentication",
853
.arg = "FILE",
854
.doc = "OpenPGP public key file base name",
804
855
.group = 2 },
805
856
{ .name = "dh-bits", .key = 129,
806
857
.arg = "BITS",
807
.doc = "dh-bits to use in gnutls communication",
858
.doc = "Bit length of the prime number used in the"
859
" Diffie-Hellman key exchange",
808
860
.group = 2 },
809
861
{ .name = "priority", .key = 130,
810
.arg = "PRIORITY",
811
.doc = "GNUTLS priority", .group = 1 },
862
.arg = "STRING",
863
.doc = "GnuTLS priority string for the TLS handshake",
864
.group = 1 },
812
865
{ .name = NULL }
813
866
};
814
815
867
816
868
error_t parse_opt (int key, char *arg,
817
869
struct argp_state *state) {
818
870
/* Get the INPUT argument from `argp_parse', which we know is
819
871
a pointer to our plugin list pointer. */
820
872
switch (key) {
821
case 128:
873
case 128: /* --debug */
822
874
debug = true;
823
875
break;
824
case 'c':
876
case 'c': /* --connect */
825
877
connect_to = arg;
826
878
break;
827
case 'i':
879
case 'i': /* --interface */
828
880
interface = arg;
829
881
break;
830
case 'd':
831
keydir = arg;
832
break;
833
case 's':
834
seckeyfile = arg;
835
break;
836
case 'p':
837
pubkeyfile = arg;
838
break;
839
case 129:
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
840
889
errno = 0;
841
890
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
842
891
if (errno){
844
893
exit(EXIT_FAILURE);
845
894
}
846
895
break;
847
case 130:
896
case 130: /* --priority */
848
897
mc.priority = arg;
849
898
break;
850
899
case ARGP_KEY_ARG:
851
900
argp_usage (state);
901
case ARGP_KEY_END:
852
902
break;
853
case ARGP_KEY_END:
854
break;
855
903
default:
856
904
return ARGP_ERR_UNKNOWN;
857
905
}
858
906
return 0;
859
907
}
860
908
861
909
struct argp argp = { .options = options, .parser = parse_opt,
862
910
.args_doc = "",
863
911
.doc = "Mandos client -- Get and decrypt"
864
" passwords from mandos server" };
912
" passwords from a Mandos server" };
865
913
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
914
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unkown error while parsing arguments\n");
915
fprintf(stderr, "Unknown error while parsing arguments\n");
868
916
exitcode = EXIT_FAILURE;
869
917
goto end;
870
918
}
871
919
}
872
873
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
920
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
goto end;
884
}
885
886
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
921
ret = init_gnutls_global(&mc, pubkey, seckey);
887
922
if (ret == -1){
888
fprintf(stderr, "init_gnutls_global\n");
923
fprintf(stderr, "init_gnutls_global failed\n");
924
exitcode = EXIT_FAILURE;
889
925
goto end;
890
926
} else {
891
927
gnutls_initalized = true;
892
928
}
893
929
930
if(mkdtemp(tempdir) == NULL){
931
perror("mkdtemp");
932
tempdir[0] = '\0';
933
goto end;
934
}
935
936
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
937
fprintf(stderr, "pgpme_initalized failed\n");
938
exitcode = EXIT_FAILURE;
939
goto end;
940
} else {
941
pgpme_initalized = true;
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
947
if(sd < 0) {
948
perror("socket");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
strcpy(network.ifr_name, interface);
953
ret = ioctl(sd, SIOCGIFFLAGS, &network);
954
if(ret == -1){
955
perror("ioctl SIOCGIFFLAGS");
956
exitcode = EXIT_FAILURE;
957
goto end;
958
}
959
if((network.ifr_flags & IFF_UP) == 0){
960
network.ifr_flags |= IFF_UP;
961
ret = ioctl(sd, SIOCSIFFLAGS, &network);
962
if(ret == -1){
963
perror("ioctl SIOCSIFFLAGS");
964
exitcode = EXIT_FAILURE;
965
goto end;
966
}
967
}
968
ret = TEMP_FAILURE_RETRY(close(sd));
969
if(ret == -1){
970
perror("close");
971
}
972
}
973
894
974
uid = getuid();
895
975
gid = getgid();
896
976
897
977
ret = setuid(uid);
898
978
if (ret == -1){
899
979
perror("setuid");
937
1017
goto end;
938
1018
}
939
1019
940
/* If the interface is down, bring it up */
941
{
942
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
943
if(sd < 0) {
944
perror("socket");
945
exitcode = EXIT_FAILURE;
946
goto end;
947
}
948
strcpy(network.ifr_name, interface); /* Spurious warning */
949
ret = ioctl(sd, SIOCGIFFLAGS, &network);
950
if(ret == -1){
951
perror("ioctl SIOCGIFFLAGS");
952
exitcode = EXIT_FAILURE;
953
goto end;
954
}
955
if((network.ifr_flags & IFF_UP) == 0){
956
network.ifr_flags |= IFF_UP;
957
ret = ioctl(sd, SIOCSIFFLAGS, &network);
958
if(ret == -1){
959
perror("ioctl SIOCSIFFLAGS");
960
exitcode = EXIT_FAILURE;
961
goto end;
962
}
963
}
964
close(sd);
965
}
966
967
1020
if (not debug){
968
1021
avahi_set_log_function(empty_log);
969
1022
}
979
1032
exitcode = EXIT_FAILURE;
980
1033
goto end;
981
1034
}
982
1035
983
1036
{
984
1037
AvahiServerConfig config;
985
1038
/* Do not publish any local Zeroconf records */
988
1041
config.publish_addresses = 0;
989
1042
config.publish_workstation = 0;
990
1043
config.publish_domain = 0;
991
1044
992
1045
/* Allocate a new server */
993
1046
mc.server = avahi_server_new(avahi_simple_poll_get
994
1047
(mc.simple_poll), &config, NULL,
995
1048
NULL, &error);
996
1049
997
1050
/* Free the Avahi configuration data */
998
1051
avahi_server_config_free(&config);
999
1052
}
1019
1072
}
1020
1073
1021
1074
/* Run the main loop */
1022
1075
1023
1076
if (debug){
1024
1077
fprintf(stderr, "Starting Avahi loop search\n");
1025
1078
}
1027
1080
avahi_simple_poll_loop(mc.simple_poll);
1028
1081
1029
1082
end:
1030
1083
1031
1084
if (debug){
1032
1085
fprintf(stderr, "%s exiting\n", argv[0]);
1033
1086
}
1038
1091
1039
1092
if (mc.server != NULL)
1040
1093
avahi_server_free(mc.server);
1041
1094
1042
1095
if (mc.simple_poll != NULL)
1043
1096
avahi_simple_poll_free(mc.simple_poll);
1044
free(pubkeyfile);
1045
free(seckeyfile);
1046
1097
1047
1098
if (gnutls_initalized){
1048
1099
gnutls_certificate_free_credentials(mc.cred);
1049
1100
gnutls_global_deinit ();
1050
1101
}
1051
1102
1103
if(pgpme_initalized){
1104
gpgme_release(mc.ctx);
1105
}
1106
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1109
DIR *d;
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1112
if(d == NULL){
1113
perror("opendir");
1114
} else {
1115
while(true){
1116
direntry = readdir(d);
1117
if(direntry == NULL){
1118
break;
1119
}
1120
if (direntry->d_type == DT_REG){
1121
char *fullname = NULL;
1122
ret = asprintf(&fullname, "%s/%s", tempdir,
1123
direntry->d_name);
1124
if(ret < 0){
1125
perror("asprintf");
1126
continue;
1127
}
1128
ret = unlink(fullname);
1129
if(ret == -1){
1130
fprintf(stderr, "unlink(\"%s\"): %s",
1131
fullname, strerror(errno));
1132
}
1133
free(fullname);
1134
}
1135
}
1136
}
1137
ret = rmdir(tempdir);
1138
if(ret == -1){
1139
perror("rmdir");
1140
}
1141
}
1142
1052
1143
return exitcode;
1053
1144
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0