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- Committer: Björn Påhlsson
- Date: 2008-07-21 19:15:06 UTC
- mfrom: (19 mandos)
- mto: This revision was merged to the branch mainline in revision 22.
- Revision ID: belorn@braxen-20080721191506-f4av11wlu2cmmeid
merge
- files added:
- ca.pem
- files removed:
- server.conf
- files renamed:
- clients.conf => mandos-clients.conf
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
1
/* -*- coding: utf-8 -*- */
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
4
*
5
* This program is partly derived from an example program for an Avahi
6
* service browser, downloaded from
7
* <http://avahi.org/browser/examples/core-browse-services.c>. This
8
* includes the following functions: "resolve_callback",
9
* "browse_callback", and parts of "main".
10
*
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
13
*
14
* This program is free software: you can redistribute it and/or
15
* modify it under the terms of the GNU General Public License as
16
* published by the Free Software Foundation, either version 3 of the
17
* License, or (at your option) any later version.
18
*
19
* This program is distributed in the hope that it will be useful, but
20
* WITHOUT ANY WARRANTY; without even the implied warranty of
21
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22
* General Public License for more details.
23
*
24
* You should have received a copy of the GNU General Public License
25
* along with this program. If not, see
26
* <http://www.gnu.org/licenses/>.
27
*
28
* Contact the authors at <mandos@fukt.bsnet.se>.
29
*/
1
/***
2
This file is part of avahi.
3
4
avahi is free software; you can redistribute it and/or modify it
5
under the terms of the GNU Lesser General Public License as
6
published by the Free Software Foundation; either version 2.1 of the
7
License, or (at your option) any later version.
8
9
avahi is distributed in the hope that it will be useful, but WITHOUT
10
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
12
Public License for more details.
13
14
You should have received a copy of the GNU Lesser General Public
15
License along with avahi; if not, write to the Free Software
16
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17
USA.
18
***/
30
19
31
/* Needed by GPGME, specifically gpgme_data_seek() */
32
20
#define _LARGEFILE_SOURCE
33
21
#define _FILE_OFFSET_BITS 64
34
22
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
37
23
#include <stdio.h>
38
24
#include <assert.h>
39
25
#include <stdlib.h>
40
26
#include <time.h>
41
27
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
46
28
47
29
#include <avahi-core/core.h>
48
30
#include <avahi-core/lookup.h>
51
33
#include <avahi-common/malloc.h>
52
34
#include <avahi-common/error.h>
53
35
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
36
//mandos client part
37
#include <sys/types.h> /* socket(), setsockopt(), inet_pton() */
38
#include <sys/socket.h> /* socket(), setsockopt(), struct sockaddr_in6, struct in6_addr, inet_pton() */
39
#include <gnutls/gnutls.h> /* ALL GNUTLS STUFF */
40
#include <gnutls/openpgp.h> /* gnutls with openpgp stuff */
60
41
61
42
#include <unistd.h> /* close() */
62
43
#include <netinet/in.h>
64
45
#include <string.h> /* memset */
65
46
#include <arpa/inet.h> /* inet_pton() */
66
47
#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 */
48
49
// gpgme
72
50
#include <errno.h> /* perror() */
73
51
#include <gpgme.h>
74
52
53
// getopt long
54
#include <getopt.h>
55
56
#ifndef CERT_ROOT
57
#define CERT_ROOT "/conf/conf.d/cryptkeyreq/"
58
#endif
59
#define CERTFILE CERT_ROOT "openpgp-client.txt"
60
#define KEYFILE CERT_ROOT "openpgp-client-key.txt"
75
61
#define BUFFER_SIZE 256
62
#define DH_BITS 1024
76
63
77
64
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>";
65
char *interface = "eth0";
82
66
83
/* Used for passing in values through the Avahi callback functions */
84
67
typedef struct {
85
AvahiSimplePoll *simple_poll;
86
AvahiServer *server;
68
gnutls_session_t session;
87
69
gnutls_certificate_credentials_t cred;
88
unsigned int dh_bits;
89
70
gnutls_dh_params_t dh_params;
90
const char *priority;
91
} mandos_context;
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
110
/*
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
113
*/
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
115
size_t crypto_size,
116
char **plaintext,
117
const char *homedir){
71
} encrypted_session;
72
73
74
ssize_t gpg_packet_decrypt (char *packet, size_t packet_size, char **new_packet, char *homedir){
118
75
gpgme_data_t dh_crypto, dh_plain;
119
76
gpgme_ctx_t ctx;
120
77
gpgme_error_t rc;
121
78
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
79
size_t new_packet_capacity = 0;
80
size_t new_packet_length = 0;
124
81
gpgme_engine_info_t engine_info;
125
82
126
83
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
84
fprintf(stderr, "Attempting to decrypt password from gpg packet\n");
128
85
}
129
86
130
87
/* Init GPGME */
131
88
gpgme_check_version(NULL);
132
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
133
if (rc != GPG_ERR_NO_ERROR){
134
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
135
gpgme_strsource(rc), gpgme_strerror(rc));
136
return -1;
137
}
89
gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
138
90
139
/* Set GPGME home directory for the OpenPGP engine only */
91
/* Set GPGME home directory */
140
92
rc = gpgme_get_engine_info (&engine_info);
141
93
if (rc != GPG_ERR_NO_ERROR){
142
94
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
152
104
engine_info = engine_info->next;
153
105
}
154
106
if(engine_info == NULL){
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
107
fprintf(stderr, "Could not set home dir to %s\n", homedir);
156
108
return -1;
157
109
}
158
110
159
/* Create new GPGME data buffer from memory cryptotext */
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
161
0);
111
/* Create new GPGME data buffer from packet buffer */
112
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
162
113
if (rc != GPG_ERR_NO_ERROR){
163
114
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
164
115
gpgme_strsource(rc), gpgme_strerror(rc));
170
121
if (rc != GPG_ERR_NO_ERROR){
171
122
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
172
123
gpgme_strsource(rc), gpgme_strerror(rc));
173
gpgme_data_release(dh_crypto);
174
124
return -1;
175
125
}
176
126
179
129
if (rc != GPG_ERR_NO_ERROR){
180
130
fprintf(stderr, "bad gpgme_new: %s: %s\n",
181
131
gpgme_strsource(rc), gpgme_strerror(rc));
182
plaintext_length = -1;
183
goto decrypt_end;
132
return -1;
184
133
}
185
134
186
/* Decrypt data from the cryptotext data buffer to the plaintext
187
data buffer */
135
/* Decrypt data from the FILE pointer to the plaintext data buffer */
188
136
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
137
if (rc != GPG_ERR_NO_ERROR){
190
138
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
191
139
gpgme_strsource(rc), gpgme_strerror(rc));
192
plaintext_length = -1;
193
goto decrypt_end;
140
return -1;
194
141
}
195
142
196
143
if(debug){
197
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
144
fprintf(stderr, "decryption of gpg packet succeeded\n");
198
145
}
199
146
200
147
if (debug){
201
148
gpgme_decrypt_result_t result;
202
149
result = gpgme_op_decrypt_result(ctx);
203
150
if (result == NULL){
204
151
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
205
152
} else {
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
153
fprintf(stderr, "Unsupported algorithm: %s\n", result->unsupported_algorithm);
154
fprintf(stderr, "Wrong key usage: %d\n", result->wrong_key_usage);
210
155
if(result->file_name != NULL){
211
156
fprintf(stderr, "File name: %s\n", result->file_name);
212
157
}
218
163
gpgme_pubkey_algo_name(recipient->pubkey_algo));
219
164
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
220
165
fprintf(stderr, "Secret key available: %s\n",
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
166
recipient->status == GPG_ERR_NO_SECKEY ? "No" : "Yes");
223
167
recipient = recipient->next;
224
168
}
225
169
}
226
170
}
227
171
}
228
172
173
/* Delete the GPGME FILE pointer cryptotext data buffer */
174
gpgme_data_release(dh_crypto);
175
229
176
/* Seek back to the beginning of the GPGME plaintext data buffer */
230
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
231
perror("pgpme_data_seek");
232
plaintext_length = -1;
233
goto decrypt_end;
234
}
235
236
*plaintext = NULL;
177
gpgme_data_seek(dh_plain, 0, SEEK_SET);
178
179
*new_packet = 0;
237
180
while(true){
238
plaintext_capacity = adjustbuffer(plaintext,
239
(size_t)plaintext_length,
240
plaintext_capacity);
241
if (plaintext_capacity == 0){
242
perror("adjustbuffer");
243
plaintext_length = -1;
244
goto decrypt_end;
181
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
182
*new_packet = realloc(*new_packet, new_packet_capacity + BUFFER_SIZE);
183
if (*new_packet == NULL){
184
perror("realloc");
185
return -1;
186
}
187
new_packet_capacity += BUFFER_SIZE;
245
188
}
246
189
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
248
BUFFER_SIZE);
190
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length, BUFFER_SIZE);
249
191
/* Print the data, if any */
250
192
if (ret == 0){
251
/* EOF */
193
/* If password is empty, then a incorrect error will be printed */
252
194
break;
253
195
}
254
196
if(ret < 0){
255
197
perror("gpgme_data_read");
256
plaintext_length = -1;
257
goto decrypt_end;
198
return -1;
258
199
}
259
plaintext_length += ret;
200
new_packet_length += ret;
260
201
}
261
202
262
if(debug){
263
fprintf(stderr, "Decrypted password is: ");
264
for(ssize_t i = 0; i < plaintext_length; i++){
265
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
266
}
267
fprintf(stderr, "\n");
268
}
269
270
decrypt_end:
271
272
/* Delete the GPGME cryptotext data buffer */
273
gpgme_data_release(dh_crypto);
203
/* FIXME: check characters before printing to screen so to not print
204
terminal control characters */
205
/* if(debug){ */
206
/* fprintf(stderr, "decrypted password is: "); */
207
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
208
/* fprintf(stderr, "\n"); */
209
/* } */
274
210
275
211
/* Delete the GPGME plaintext data buffer */
276
212
gpgme_data_release(dh_plain);
277
return plaintext_length;
213
return new_packet_length;
278
214
}
279
215
280
216
static const char * safer_gnutls_strerror (int value) {
284
220
return ret;
285
221
}
286
222
287
/* GnuTLS log function callback */
288
static void debuggnutls(__attribute__((unused)) int level,
289
const char* string){
290
fprintf(stderr, "GnuTLS: %s", string);
223
void debuggnutls(int level, const char* string){
224
fprintf(stderr, "%s", string);
291
225
}
292
226
293
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
227
int initgnutls(encrypted_session *es){
228
const char *err;
296
229
int ret;
297
230
298
231
if(debug){
299
fprintf(stderr, "Initializing GnuTLS\n");
232
fprintf(stderr, "Initializing gnutls\n");
300
233
}
301
234
235
302
236
if ((ret = gnutls_global_init ())
303
237
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
238
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
306
239
return -1;
307
240
}
308
241
309
242
if (debug){
310
/* "Use a log level over 10 to enable all debugging options."
311
* - GnuTLS manual
312
*/
313
243
gnutls_global_set_log_level(11);
314
244
gnutls_global_set_log_function(debuggnutls);
315
245
}
316
246
317
/* OpenPGP credentials */
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
247
248
/* openpgp credentials */
249
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
319
250
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
251
fprintf (stderr, "memory error: %s\n", safer_gnutls_strerror(ret));
322
252
return -1;
323
253
}
324
254
325
255
if(debug){
326
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
327
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
328
seckeyfile);
256
fprintf(stderr, "Attempting to use openpgp certificate %s"
257
" and keyfile %s as gnutls credentials\n", CERTFILE, KEYFILE);
329
258
}
330
259
331
260
ret = gnutls_certificate_set_openpgp_key_file
332
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
333
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",
338
safer_gnutls_strerror(ret));
339
return -1;
340
}
341
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){
367
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
368
safer_gnutls_strerror(ret));
369
}
370
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
}
380
}
381
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",
386
safer_gnutls_strerror(ret));
387
return -1;
388
}
389
261
(es->cred, CERTFILE, KEYFILE, GNUTLS_OPENPGP_FMT_BASE64);
262
if (ret != GNUTLS_E_SUCCESS) {
263
fprintf
264
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s', '%s')\n",
265
ret, CERTFILE, KEYFILE);
266
fprintf(stdout, "The Error is: %s\n",
267
safer_gnutls_strerror(ret));
268
return -1;
269
}
270
271
//Gnutls server initialization
272
if ((ret = gnutls_dh_params_init (&es->dh_params))
273
!= GNUTLS_E_SUCCESS) {
274
fprintf (stderr, "Error in dh parameter initialization: %s\n",
275
safer_gnutls_strerror(ret));
276
return -1;
277
}
278
279
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
280
!= GNUTLS_E_SUCCESS) {
281
fprintf (stderr, "Error in prime generation: %s\n",
282
safer_gnutls_strerror(ret));
283
return -1;
284
}
285
286
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
287
288
// Gnutls session creation
289
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
290
!= GNUTLS_E_SUCCESS){
291
fprintf(stderr, "Error in gnutls session initialization: %s\n",
292
safer_gnutls_strerror(ret));
293
}
294
295
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
296
!= GNUTLS_E_SUCCESS) {
297
fprintf(stderr, "Syntax error at: %s\n", err);
298
fprintf(stderr, "Gnutls error: %s\n",
299
safer_gnutls_strerror(ret));
300
return -1;
301
}
302
303
if ((ret = gnutls_credentials_set
304
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
305
!= GNUTLS_E_SUCCESS) {
306
fprintf(stderr, "Error setting a credentials set: %s\n",
307
safer_gnutls_strerror(ret));
308
return -1;
309
}
310
390
311
/* ignore client certificate if any. */
391
gnutls_certificate_server_set_request (*session,
392
GNUTLS_CERT_IGNORE);
312
gnutls_certificate_server_set_request (es->session, GNUTLS_CERT_IGNORE);
393
313
394
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
314
gnutls_dh_set_prime_bits (es->session, DH_BITS);
395
315
396
316
return 0;
397
317
}
398
318
399
/* Avahi log function callback */
400
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
401
__attribute__((unused)) const char *txt){}
319
void empty_log(AvahiLogLevel level, const char *txt){}
402
320
403
/* Called when a Mandos server is found */
404
static int start_mandos_communication(const char *ip, uint16_t port,
405
AvahiIfIndex if_index,
406
mandos_context *mc){
321
int start_mandos_communication(char *ip, uint16_t port){
407
322
int ret, tcp_sd;
408
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
323
struct sockaddr_in6 to;
324
encrypted_session es;
409
325
char *buffer = NULL;
410
326
char *decrypted_buffer;
411
327
size_t buffer_length = 0;
412
328
size_t buffer_capacity = 0;
413
329
ssize_t decrypted_buffer_size;
414
size_t written;
415
330
int retval = 0;
416
char interface[IF_NAMESIZE];
417
gnutls_session_t session;
418
419
ret = init_gnutls_session (mc, &session);
420
if (ret != 0){
421
return -1;
422
}
423
331
424
332
if(debug){
425
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
426
ip, port);
333
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
427
334
}
428
335
429
336
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
433
340
}
434
341
435
342
if(debug){
436
if(if_indextoname((unsigned int)if_index, interface) == NULL){
437
perror("if_indextoname");
438
return -1;
439
}
440
343
fprintf(stderr, "Binding to interface %s\n", interface);
441
344
}
345
346
ret = setsockopt(tcp_sd, SOL_SOCKET, SO_BINDTODEVICE, interface, 5);
347
if(tcp_sd < 0) {
348
perror("setsockopt bindtodevice");
349
return -1;
350
}
442
351
443
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);
352
memset(&to,0,sizeof(to));
353
to.sin6_family = AF_INET6;
354
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
448
355
if (ret < 0 ){
449
356
perror("inet_pton");
450
357
return -1;
451
}
358
}
452
359
if(ret == 0){
453
360
fprintf(stderr, "Bad address: %s\n", ip);
454
361
return -1;
455
362
}
456
to.in6.sin6_port = htons(port); /* Spurious warning */
457
458
to.in6.sin6_scope_id = (uint32_t)if_index;
459
363
to.sin6_port = htons(port);
364
to.sin6_scope_id = if_nametoindex(interface);
365
460
366
if(debug){
461
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
462
char addrstr[INET6_ADDRSTRLEN] = "";
463
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
464
sizeof(addrstr)) == NULL){
465
perror("inet_ntop");
466
} else {
467
if(strcmp(addrstr, ip) != 0){
468
fprintf(stderr, "Canonical address form: %s\n", addrstr);
469
}
470
}
367
fprintf(stderr, "Connection to: %s\n", ip);
471
368
}
472
369
473
ret = connect(tcp_sd, &to.in, sizeof(to));
370
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
474
371
if (ret < 0){
475
372
perror("connect");
476
373
return -1;
477
374
}
375
376
ret = initgnutls (&es);
377
if (ret != 0){
378
retval = -1;
379
return -1;
380
}
381
382
383
gnutls_transport_set_ptr (es.session, (gnutls_transport_ptr_t) tcp_sd);
478
384
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
385
if(debug){
504
fprintf(stderr, "Establishing TLS session with %s\n", ip);
386
fprintf(stderr, "Establishing tls session with %s\n", ip);
505
387
}
506
507
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
508
509
ret = gnutls_handshake (session);
388
389
390
ret = gnutls_handshake (es.session);
510
391
511
392
if (ret != GNUTLS_E_SUCCESS){
512
if(debug){
513
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
514
gnutls_perror (ret);
515
}
393
fprintf(stderr, "\n*** Handshake failed ***\n");
394
gnutls_perror (ret);
516
395
retval = -1;
517
goto mandos_end;
396
goto exit;
518
397
}
519
520
/* Read OpenPGP packet that contains the wanted password */
521
398
399
//Retrieve gpg packet that contains the wanted password
400
522
401
if(debug){
523
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
524
ip);
402
fprintf(stderr, "Retrieving pgp encrypted password from %s\n", ip);
525
403
}
526
404
527
405
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;
406
if (buffer_length + BUFFER_SIZE > buffer_capacity){
407
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
408
if (buffer == NULL){
409
perror("realloc");
410
goto exit;
411
}
412
buffer_capacity += BUFFER_SIZE;
534
413
}
535
414
536
ret = gnutls_record_recv(session, buffer+buffer_length,
537
BUFFER_SIZE);
415
ret = gnutls_record_recv
416
(es.session, buffer+buffer_length, BUFFER_SIZE);
538
417
if (ret == 0){
539
418
break;
540
419
}
544
423
case GNUTLS_E_AGAIN:
545
424
break;
546
425
case GNUTLS_E_REHANDSHAKE:
547
ret = gnutls_handshake (session);
426
ret = gnutls_handshake (es.session);
548
427
if (ret < 0){
549
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
428
fprintf(stderr, "\n*** Handshake failed ***\n");
550
429
gnutls_perror (ret);
551
430
retval = -1;
552
goto mandos_end;
431
goto exit;
553
432
}
554
433
break;
555
434
default:
556
fprintf(stderr, "Unknown error while reading data from"
557
" encrypted session with Mandos server\n");
435
fprintf(stderr, "Unknown error while reading data from encrypted session with mandos server\n");
558
436
retval = -1;
559
gnutls_bye (session, GNUTLS_SHUT_RDWR);
560
goto mandos_end;
437
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
438
goto exit;
561
439
}
562
440
} else {
563
buffer_length += (size_t) ret;
441
buffer_length += ret;
564
442
}
565
443
}
566
444
567
if(debug){
568
fprintf(stderr, "Closing TLS session\n");
569
}
570
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
572
573
445
if (buffer_length > 0){
574
decrypted_buffer_size = pgp_packet_decrypt(buffer,
575
buffer_length,
576
&decrypted_buffer,
577
keydir);
578
if (decrypted_buffer_size >= 0){
579
written = 0;
580
while(written < (size_t) decrypted_buffer_size){
581
ret = (int)fwrite (decrypted_buffer + written, 1,
582
(size_t)decrypted_buffer_size - written,
583
stdout);
584
if(ret == 0 and ferror(stdout)){
585
if(debug){
586
fprintf(stderr, "Error writing encrypted data: %s\n",
587
strerror(errno));
588
}
589
retval = -1;
590
break;
591
}
592
written += (size_t)ret;
593
}
446
if ((decrypted_buffer_size = gpg_packet_decrypt(buffer, buffer_length, &decrypted_buffer, CERT_ROOT)) >= 0){
447
fwrite (decrypted_buffer, 1, decrypted_buffer_size, stdout);
594
448
free(decrypted_buffer);
595
449
} else {
596
450
retval = -1;
597
451
}
598
452
}
599
600
/* Shutdown procedure */
601
602
mandos_end:
453
454
//shutdown procedure
455
456
if(debug){
457
fprintf(stderr, "Closing tls session\n");
458
}
459
603
460
free(buffer);
461
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
462
exit:
604
463
close(tcp_sd);
605
gnutls_deinit (session);
606
gnutls_certificate_free_credentials (mc->cred);
464
gnutls_deinit (es.session);
465
gnutls_certificate_free_credentials (es.cred);
607
466
gnutls_global_deinit ();
608
467
return retval;
609
468
}
610
469
611
static void resolve_callback(AvahiSServiceResolver *r,
612
AvahiIfIndex interface,
613
AVAHI_GCC_UNUSED AvahiProtocol protocol,
614
AvahiResolverEvent event,
615
const char *name,
616
const char *type,
617
const char *domain,
618
const char *host_name,
619
const AvahiAddress *address,
620
uint16_t port,
621
AVAHI_GCC_UNUSED AvahiStringList *txt,
622
AVAHI_GCC_UNUSED AvahiLookupResultFlags
623
flags,
624
void* userdata) {
625
mandos_context *mc = userdata;
626
assert(r); /* Spurious warning */
627
628
/* Called whenever a service has been resolved successfully or
629
timed out */
630
631
switch (event) {
632
default:
633
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,
636
avahi_strerror(avahi_server_errno(mc->server)));
637
break;
638
639
case AVAHI_RESOLVER_FOUND:
640
{
641
char ip[AVAHI_ADDRESS_STR_MAX];
642
avahi_address_snprint(ip, sizeof(ip), address);
643
if(debug){
644
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
645
" port %d\n", name, host_name, ip, interface, port);
646
}
647
int ret = start_mandos_communication(ip, port, interface, mc);
648
if (ret == 0){
649
exit(EXIT_SUCCESS);
650
}
651
}
652
}
653
avahi_s_service_resolver_free(r);
654
}
655
656
static void browse_callback( AvahiSServiceBrowser *b,
657
AvahiIfIndex interface,
658
AvahiProtocol protocol,
659
AvahiBrowserEvent event,
660
const char *name,
661
const char *type,
662
const char *domain,
663
AVAHI_GCC_UNUSED AvahiLookupResultFlags
664
flags,
665
void* userdata) {
666
mandos_context *mc = userdata;
667
assert(b); /* Spurious warning */
668
669
/* Called whenever a new services becomes available on the LAN or
670
is removed from the LAN */
671
672
switch (event) {
673
default:
674
case AVAHI_BROWSER_FAILURE:
675
676
fprintf(stderr, "(Avahi browser) %s\n",
677
avahi_strerror(avahi_server_errno(mc->server)));
678
avahi_simple_poll_quit(mc->simple_poll);
679
return;
680
681
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. */
686
687
if (!(avahi_s_service_resolver_new(mc->server, interface,
688
protocol, name, type, domain,
689
AVAHI_PROTO_INET6, 0,
690
resolve_callback, mc)))
691
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
692
name, avahi_strerror(avahi_server_errno(mc->server)));
693
break;
694
695
case AVAHI_BROWSER_REMOVE:
696
break;
697
698
case AVAHI_BROWSER_ALL_FOR_NOW:
699
case AVAHI_BROWSER_CACHE_EXHAUSTED:
700
if(debug){
701
fprintf(stderr, "No Mandos server found, still searching...\n");
702
}
703
break;
704
}
705
}
706
707
/* Combines file name and path and returns the malloced new
708
string. some sane checks could/should be added */
709
static const char *combinepath(const char *first, const char *second){
710
size_t f_len = strlen(first);
711
size_t s_len = strlen(second);
712
char *tmp = malloc(f_len + s_len + 2);
713
if (tmp == NULL){
714
return NULL;
715
}
716
if(f_len > 0){
717
memcpy(tmp, first, f_len); /* Spurious warning */
718
}
719
tmp[f_len] = '/';
720
if(s_len > 0){
721
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
722
}
723
tmp[f_len + 1 + s_len] = '\0';
724
return tmp;
725
}
726
727
728
int main(int argc, char *argv[]){
470
static AvahiSimplePoll *simple_poll = NULL;
471
static AvahiServer *server = NULL;
472
473
static void resolve_callback(
474
AvahiSServiceResolver *r,
475
AVAHI_GCC_UNUSED AvahiIfIndex interface,
476
AVAHI_GCC_UNUSED AvahiProtocol protocol,
477
AvahiResolverEvent event,
478
const char *name,
479
const char *type,
480
const char *domain,
481
const char *host_name,
482
const AvahiAddress *address,
483
uint16_t port,
484
AvahiStringList *txt,
485
AvahiLookupResultFlags flags,
486
AVAHI_GCC_UNUSED void* userdata) {
487
488
assert(r);
489
490
/* Called whenever a service has been resolved successfully or timed out */
491
492
switch (event) {
493
case AVAHI_RESOLVER_FAILURE:
494
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_server_errno(server)));
495
break;
496
497
case AVAHI_RESOLVER_FOUND: {
498
char ip[AVAHI_ADDRESS_STR_MAX];
499
avahi_address_snprint(ip, sizeof(ip), address);
500
if(debug){
501
fprintf(stderr, "Mandos server found at %s on port %d\n", ip, port);
502
}
503
int ret = start_mandos_communication(ip, port);
504
if (ret == 0){
505
exit(EXIT_SUCCESS);
506
} else {
507
exit(EXIT_FAILURE);
508
}
509
}
510
}
511
avahi_s_service_resolver_free(r);
512
}
513
514
static void browse_callback(
515
AvahiSServiceBrowser *b,
516
AvahiIfIndex interface,
517
AvahiProtocol protocol,
518
AvahiBrowserEvent event,
519
const char *name,
520
const char *type,
521
const char *domain,
522
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
523
void* userdata) {
524
525
AvahiServer *s = userdata;
526
assert(b);
527
528
/* Called whenever a new services becomes available on the LAN or is removed from the LAN */
529
530
switch (event) {
531
532
case AVAHI_BROWSER_FAILURE:
533
534
fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_server_errno(server)));
535
avahi_simple_poll_quit(simple_poll);
536
return;
537
538
case AVAHI_BROWSER_NEW:
539
/* We ignore the returned resolver object. In the callback
540
function we free it. If the server is terminated before
541
the callback function is called the server will free
542
the resolver for us. */
543
544
if (!(avahi_s_service_resolver_new(s, interface, protocol, name, type, domain, AVAHI_PROTO_INET6, 0, resolve_callback, s)))
545
fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_server_errno(s)));
546
547
break;
548
549
case AVAHI_BROWSER_REMOVE:
550
break;
551
552
case AVAHI_BROWSER_ALL_FOR_NOW:
553
case AVAHI_BROWSER_CACHE_EXHAUSTED:
554
break;
555
}
556
}
557
558
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
559
AvahiServerConfig config;
729
560
AvahiSServiceBrowser *sb = NULL;
730
561
int error;
731
562
int ret;
732
int exitcode = EXIT_SUCCESS;
733
const char *interface = "eth0";
734
struct ifreq network;
735
int sd;
736
uid_t uid;
737
gid_t gid;
738
char *connect_to = NULL;
739
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
742
mandos_context mc = { .simple_poll = NULL, .server = NULL,
743
.dh_bits = 1024, .priority = "SECURE256"};
744
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;
821
}
822
return 0;
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);
830
}
831
832
pubkeyfile = combinepath(keydir, pubkeyfile);
833
if (pubkeyfile == NULL){
834
perror("combinepath");
835
exitcode = EXIT_FAILURE;
836
goto end;
837
}
838
839
seckeyfile = combinepath(keydir, seckeyfile);
840
if (seckeyfile == NULL){
841
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");
862
}
863
864
if_index = (AvahiIfIndex) if_nametoindex(interface);
865
if(if_index == 0){
866
fprintf(stderr, "No such interface: \"%s\"\n", interface);
867
exit(EXIT_FAILURE);
868
}
869
870
if(connect_to != NULL){
871
/* Connect directly, do not use Zeroconf */
872
/* (Mainly meant for debugging) */
873
char *address = strrchr(connect_to, ':');
874
if(address == NULL){
875
fprintf(stderr, "No colon in address\n");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
errno = 0;
880
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
881
if(errno){
882
perror("Bad port number");
883
exitcode = EXIT_FAILURE;
884
goto end;
885
}
886
*address = '\0';
887
address = connect_to;
888
ret = start_mandos_communication(address, port, if_index, &mc);
889
if(ret < 0){
890
exitcode = EXIT_FAILURE;
891
} else {
892
exitcode = EXIT_SUCCESS;
893
}
894
goto end;
895
}
896
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);
907
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);
563
int returncode = EXIT_SUCCESS;
564
565
while (true){
566
static struct option long_options[] = {
567
{"debug", no_argument, (int *)&debug, 1},
568
{"interface", required_argument, 0, 'i'},
569
{0, 0, 0, 0} };
570
571
int option_index = 0;
572
ret = getopt_long (argc, argv, "i:", long_options, &option_index);
573
574
if (ret == -1){
575
break;
576
}
577
578
switch(ret){
579
case 0:
580
break;
581
case 'i':
582
interface = optarg;
583
break;
584
default:
585
exit(EXIT_FAILURE);
586
}
922
587
}
923
588
924
589
if (not debug){
925
590
avahi_set_log_function(empty_log);
926
591
}
927
592
928
/* Initialize the pseudo-RNG for Avahi */
929
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",
961
avahi_strerror(error));
962
exitcode = EXIT_FAILURE;
963
goto end;
964
}
965
966
/* Create the Avahi service browser */
967
sb = avahi_s_service_browser_new(mc.server, if_index,
968
AVAHI_PROTO_INET6,
969
"_mandos._tcp", NULL, 0,
970
browse_callback, &mc);
971
if (sb == NULL) {
972
fprintf(stderr, "Failed to create service browser: %s\n",
973
avahi_strerror(avahi_server_errno(mc.server)));
974
exitcode = EXIT_FAILURE;
975
goto end;
593
/* Initialize the psuedo-RNG */
594
srand(time(NULL));
595
596
/* Allocate main loop object */
597
if (!(simple_poll = avahi_simple_poll_new())) {
598
fprintf(stderr, "Failed to create simple poll object.\n");
599
600
goto exit;
601
}
602
603
/* Do not publish any local records */
604
avahi_server_config_init(&config);
605
config.publish_hinfo = 0;
606
config.publish_addresses = 0;
607
config.publish_workstation = 0;
608
config.publish_domain = 0;
609
610
/* Allocate a new server */
611
server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, NULL, NULL, &error);
612
613
/* Free the configuration data */
614
avahi_server_config_free(&config);
615
616
/* Check if creating the server object succeeded */
617
if (!server) {
618
fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error));
619
returncode = EXIT_FAILURE;
620
goto exit;
621
}
622
623
/* Create the service browser */
624
if (!(sb = avahi_s_service_browser_new(server, if_nametoindex("eth0"), AVAHI_PROTO_INET6, "_mandos._tcp", NULL, 0, browse_callback, server))) {
625
fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_server_errno(server)));
626
returncode = EXIT_FAILURE;
627
goto exit;
976
628
}
977
629
978
630
/* Run the main loop */
979
631
980
632
if (debug){
981
fprintf(stderr, "Starting Avahi loop search\n");
633
fprintf(stderr, "Starting avahi loop search\n");
982
634
}
983
635
984
avahi_simple_poll_loop(mc.simple_poll);
636
avahi_simple_poll_loop(simple_poll);
985
637
986
end:
638
exit:
987
639
988
640
if (debug){
989
641
fprintf(stderr, "%s exiting\n", argv[0]);
990
642
}
991
643
992
644
/* Cleanup things */
993
if (sb != NULL)
645
if (sb)
994
646
avahi_s_service_browser_free(sb);
995
647
996
if (mc.server != NULL)
997
avahi_server_free(mc.server);
998
999
if (mc.simple_poll != NULL)
1000
avahi_simple_poll_free(mc.simple_poll);
1001
free(pubkeyfile);
1002
free(seckeyfile);
1003
1004
return exitcode;
648
if (server)
649
avahi_server_free(server);
650
651
if (simple_poll)
652
avahi_simple_poll_free(simple_poll);
653
654
return returncode;
1005
655
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0