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- Committer: Teddy Hogeborn
- Date: 2009-02-07 03:28:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20090207032824-5eg756uscdr3gend
* initramfs-tools-hook: Also fix /lib<qual> and /usr/lib<qual>
directories.
directories.
- files added:
- NEWS
- debian/po
- files removed:
- etc-plugins.d-README
- files modified:
- .bzrignore
added
removed
plugins.d/mandos-client.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
3
* Mandos-client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
13
14
*
14
15
* This program is free software: you can redistribute it and/or
15
16
* modify it under the terms of the GNU General Public License as
35
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
37
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
stdout, ferror(), sscanf(),
40
remove() */
39
41
#include <stdint.h> /* uint16_t, uint32_t */
40
42
#include <stddef.h> /* NULL, size_t, ssize_t */
41
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
47
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
50
sockaddr_in6, PF_INET6,
49
51
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t, open(), opendir(), DIR */
52
uid_t, gid_t, open(), opendir(),
53
DIR */
51
54
#include <sys/stat.h> /* open() */
52
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
56
struct in6_addr, inet_pton(),
54
57
connect() */
55
58
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
58
62
#include <assert.h> /* assert() */
59
63
#include <errno.h> /* perror(), errno */
60
#include <time.h> /* time() */
64
#include <time.h> /* nanosleep(), time() */
61
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
62
66
SIOCSIFFLAGS, if_indextoname(),
63
67
if_nametoindex(), IF_NAMESIZE */
66
70
getuid(), getgid(), setuid(),
67
71
setgid() */
68
72
#include <arpa/inet.h> /* inet_pton(), htons */
69
#include <iso646.h> /* not, and */
73
#include <iso646.h> /* not, and, or */
70
74
#include <argp.h> /* struct argp_option, error_t, struct
71
75
argp_state, struct argp,
72
76
argp_parse(), ARGP_KEY_ARG,
73
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#ifdef __linux__
79
#include <sys/klog.h> /* klogctl() */
80
#endif
74
81
75
82
/* Avahi */
76
83
/* All Avahi types, constants and functions
89
96
gnutls_*
90
97
init_gnutls_session(),
91
98
GNUTLS_* */
92
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
99
#include <gnutls/openpgp.h>
100
/* gnutls_certificate_set_openpgp_key_file(),
93
101
GNUTLS_OPENPGP_FMT_BASE64 */
94
102
95
103
/* GPGME */
101
109
102
110
#define BUFFER_SIZE 256
103
111
104
/*
105
#define PATHDIR "/conf/conf.d/mandos"
106
*/
107
108
112
#define PATHDIR "/conf/conf.d/mandos"
109
113
#define SECKEY "seckey.txt"
110
114
#define PUBKEY "pubkey.txt"
111
115
112
116
bool debug = false;
113
117
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client 1.0";
118
const char *argp_program_version = "mandos-client " VERSION;
115
119
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
116
120
117
121
/* Used for passing in values through the Avahi callback functions */
132
136
*/
133
137
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
138
size_t buffer_capacity){
135
if (buffer_length + BUFFER_SIZE > buffer_capacity){
139
if(buffer_length + BUFFER_SIZE > buffer_capacity){
136
140
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if (buffer == NULL){
141
if(buffer == NULL){
138
142
return 0;
139
143
}
140
144
buffer_capacity += BUFFER_SIZE;
153
157
154
158
155
159
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
160
* Helper function to insert pub and seckey to the engine keyring.
157
161
*/
158
162
bool import_key(const char *filename){
159
163
int fd;
160
164
gpgme_data_t pgp_data;
161
165
162
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
166
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
167
if(fd == -1){
164
168
perror("open");
165
169
return false;
166
170
}
167
171
168
172
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if (rc != GPG_ERR_NO_ERROR){
173
if(rc != GPG_ERR_NO_ERROR){
170
174
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
175
gpgme_strsource(rc), gpgme_strerror(rc));
172
176
return false;
173
177
}
174
178
175
179
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if (rc != GPG_ERR_NO_ERROR){
180
if(rc != GPG_ERR_NO_ERROR){
177
181
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
182
gpgme_strsource(rc), gpgme_strerror(rc));
179
183
return false;
180
184
}
181
185
182
ret = TEMP_FAILURE_RETRY(close(fd));
186
ret = (int)TEMP_FAILURE_RETRY(close(fd));
183
187
if(ret == -1){
184
188
perror("close");
185
189
}
187
191
return true;
188
192
}
189
193
190
if (debug){
194
if(debug){
191
195
fprintf(stderr, "Initialize gpgme\n");
192
196
}
193
197
194
198
/* Init GPGME */
195
199
gpgme_check_version(NULL);
196
200
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
if (rc != GPG_ERR_NO_ERROR){
201
if(rc != GPG_ERR_NO_ERROR){
198
202
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
203
gpgme_strsource(rc), gpgme_strerror(rc));
200
204
return false;
201
205
}
202
206
203
207
/* Set GPGME home directory for the OpenPGP engine only */
204
rc = gpgme_get_engine_info (&engine_info);
205
if (rc != GPG_ERR_NO_ERROR){
208
rc = gpgme_get_engine_info(&engine_info);
209
if(rc != GPG_ERR_NO_ERROR){
206
210
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
211
gpgme_strsource(rc), gpgme_strerror(rc));
208
212
return false;
222
226
223
227
/* Create new GPGME "context" */
224
228
rc = gpgme_new(&(mc->ctx));
225
if (rc != GPG_ERR_NO_ERROR){
229
if(rc != GPG_ERR_NO_ERROR){
226
230
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
231
gpgme_strsource(rc), gpgme_strerror(rc));
228
232
return false;
229
233
}
230
234
231
if (not import_key(pubkey) or not import_key(seckey)){
235
if(not import_key(pubkey) or not import_key(seckey)){
232
236
return false;
233
237
}
234
238
239
243
* Decrypt OpenPGP data.
240
244
* Returns -1 on error
241
245
*/
242
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
247
const char *cryptotext,
248
size_t crypto_size,
249
char **plaintext){
246
250
gpgme_data_t dh_crypto, dh_plain;
247
251
gpgme_error_t rc;
248
252
ssize_t ret;
249
253
size_t plaintext_capacity = 0;
250
254
ssize_t plaintext_length = 0;
251
255
252
if (debug){
256
if(debug){
253
257
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
254
258
}
255
259
256
260
/* Create new GPGME data buffer from memory cryptotext */
257
261
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
258
262
0);
259
if (rc != GPG_ERR_NO_ERROR){
263
if(rc != GPG_ERR_NO_ERROR){
260
264
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
265
gpgme_strsource(rc), gpgme_strerror(rc));
262
266
return -1;
264
268
265
269
/* Create new empty GPGME data buffer for the plaintext */
266
270
rc = gpgme_data_new(&dh_plain);
267
if (rc != GPG_ERR_NO_ERROR){
271
if(rc != GPG_ERR_NO_ERROR){
268
272
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
273
gpgme_strsource(rc), gpgme_strerror(rc));
270
274
gpgme_data_release(dh_crypto);
274
278
/* Decrypt data from the cryptotext data buffer to the plaintext
275
279
data buffer */
276
280
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if (rc != GPG_ERR_NO_ERROR){
281
if(rc != GPG_ERR_NO_ERROR){
278
282
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
283
gpgme_strsource(rc), gpgme_strerror(rc));
280
284
plaintext_length = -1;
281
if (debug){
285
if(debug){
282
286
gpgme_decrypt_result_t result;
283
287
result = gpgme_op_decrypt_result(mc->ctx);
284
if (result == NULL){
288
if(result == NULL){
285
289
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
290
} else {
287
291
fprintf(stderr, "Unsupported algorithm: %s\n",
314
318
}
315
319
316
320
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
321
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
322
perror("gpgme_data_seek");
319
323
plaintext_length = -1;
320
324
goto decrypt_end;
325
329
plaintext_capacity = adjustbuffer(plaintext,
326
330
(size_t)plaintext_length,
327
331
plaintext_capacity);
328
if (plaintext_capacity == 0){
332
if(plaintext_capacity == 0){
329
333
perror("adjustbuffer");
330
334
plaintext_length = -1;
331
335
goto decrypt_end;
334
338
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
335
339
BUFFER_SIZE);
336
340
/* Print the data, if any */
337
if (ret == 0){
341
if(ret == 0){
338
342
/* EOF */
339
343
break;
340
344
}
364
368
return plaintext_length;
365
369
}
366
370
367
static const char * safer_gnutls_strerror (int value) {
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
369
if (ret == NULL)
371
static const char * safer_gnutls_strerror(int value){
372
const char *ret = gnutls_strerror(value); /* Spurious warning from
373
-Wunreachable-code */
374
if(ret == NULL)
370
375
ret = "(unknown)";
371
376
return ret;
372
377
}
387
392
}
388
393
389
394
ret = gnutls_global_init();
390
if (ret != GNUTLS_E_SUCCESS) {
391
fprintf (stderr, "GnuTLS global_init: %s\n",
392
safer_gnutls_strerror(ret));
395
if(ret != GNUTLS_E_SUCCESS){
396
fprintf(stderr, "GnuTLS global_init: %s\n",
397
safer_gnutls_strerror(ret));
393
398
return -1;
394
399
}
395
400
396
if (debug){
401
if(debug){
397
402
/* "Use a log level over 10 to enable all debugging options."
398
403
* - GnuTLS manual
399
404
*/
403
408
404
409
/* OpenPGP credentials */
405
410
gnutls_certificate_allocate_credentials(&mc->cred);
406
if (ret != GNUTLS_E_SUCCESS){
407
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
409
safer_gnutls_strerror(ret));
410
gnutls_global_deinit ();
411
if(ret != GNUTLS_E_SUCCESS){
412
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
413
* from
414
* -Wunreachable-code
415
*/
416
safer_gnutls_strerror(ret));
417
gnutls_global_deinit();
411
418
return -1;
412
419
}
413
420
420
427
ret = gnutls_certificate_set_openpgp_key_file
421
428
(mc->cred, pubkeyfilename, seckeyfilename,
422
429
GNUTLS_OPENPGP_FMT_BASE64);
423
if (ret != GNUTLS_E_SUCCESS) {
430
if(ret != GNUTLS_E_SUCCESS){
424
431
fprintf(stderr,
425
432
"Error[%d] while reading the OpenPGP key pair ('%s',"
426
433
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
438
432
439
/* GnuTLS server initialization */
433
440
ret = gnutls_dh_params_init(&mc->dh_params);
434
if (ret != GNUTLS_E_SUCCESS) {
435
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
436
" %s\n", safer_gnutls_strerror(ret));
441
if(ret != GNUTLS_E_SUCCESS){
442
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
443
" %s\n", safer_gnutls_strerror(ret));
437
444
goto globalfail;
438
445
}
439
446
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
440
if (ret != GNUTLS_E_SUCCESS) {
441
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
442
safer_gnutls_strerror(ret));
447
if(ret != GNUTLS_E_SUCCESS){
448
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
449
safer_gnutls_strerror(ret));
443
450
goto globalfail;
444
451
}
445
452
460
467
int ret;
461
468
/* GnuTLS session creation */
462
469
ret = gnutls_init(session, GNUTLS_SERVER);
463
if (ret != GNUTLS_E_SUCCESS){
470
if(ret != GNUTLS_E_SUCCESS){
464
471
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
465
472
safer_gnutls_strerror(ret));
466
473
}
468
475
{
469
476
const char *err;
470
477
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
471
if (ret != GNUTLS_E_SUCCESS) {
478
if(ret != GNUTLS_E_SUCCESS){
472
479
fprintf(stderr, "Syntax error at: %s\n", err);
473
480
fprintf(stderr, "GnuTLS error: %s\n",
474
481
safer_gnutls_strerror(ret));
475
gnutls_deinit (*session);
482
gnutls_deinit(*session);
476
483
return -1;
477
484
}
478
485
}
479
486
480
487
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
481
488
mc->cred);
482
if (ret != GNUTLS_E_SUCCESS) {
489
if(ret != GNUTLS_E_SUCCESS){
483
490
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
484
491
safer_gnutls_strerror(ret));
485
gnutls_deinit (*session);
492
gnutls_deinit(*session);
486
493
return -1;
487
494
}
488
495
489
496
/* ignore client certificate if any. */
490
gnutls_certificate_server_set_request (*session,
491
GNUTLS_CERT_IGNORE);
497
gnutls_certificate_server_set_request(*session,
498
GNUTLS_CERT_IGNORE);
492
499
493
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
500
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
494
501
495
502
return 0;
496
503
}
504
511
AvahiIfIndex if_index,
505
512
mandos_context *mc){
506
513
int ret, tcp_sd;
514
ssize_t sret;
507
515
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
508
516
char *buffer = NULL;
509
517
char *decrypted_buffer;
515
523
char interface[IF_NAMESIZE];
516
524
gnutls_session_t session;
517
525
518
ret = init_gnutls_session (mc, &session);
519
if (ret != 0){
526
ret = init_gnutls_session(mc, &session);
527
if(ret != 0){
520
528
return -1;
521
529
}
522
530
526
534
}
527
535
528
536
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
529
if(tcp_sd < 0) {
537
if(tcp_sd < 0){
530
538
perror("socket");
531
539
return -1;
532
540
}
544
552
/* It would be nice to have a way to detect if we were passed an
545
553
IPv4 address here. Now we assume an IPv6 address. */
546
554
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
547
if (ret < 0 ){
555
if(ret < 0 ){
548
556
perror("inet_pton");
549
557
return -1;
550
558
}
552
560
fprintf(stderr, "Bad address: %s\n", ip);
553
561
return -1;
554
562
}
555
to.in6.sin6_port = htons(port); /* Spurious warning */
563
to.in6.sin6_port = htons(port); /* Spurious warnings from
564
-Wconversion and
565
-Wunreachable-code */
556
566
557
567
to.in6.sin6_scope_id = (uint32_t)if_index;
558
568
571
581
}
572
582
573
583
ret = connect(tcp_sd, &to.in, sizeof(to));
574
if (ret < 0){
584
if(ret < 0){
575
585
perror("connect");
576
586
return -1;
577
587
}
578
588
579
589
const char *out = mandos_protocol_version;
580
590
written = 0;
581
while (true){
591
while(true){
582
592
size_t out_size = strlen(out);
583
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
593
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
584
594
out_size - written));
585
if (ret == -1){
595
if(ret == -1){
586
596
perror("write");
587
597
retval = -1;
588
598
goto mandos_end;
591
601
if(written < out_size){
592
602
continue;
593
603
} else {
594
if (out == mandos_protocol_version){
604
if(out == mandos_protocol_version){
595
605
written = 0;
596
606
out = "\r\n";
597
607
} else {
604
614
fprintf(stderr, "Establishing TLS session with %s\n", ip);
605
615
}
606
616
607
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
617
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
608
618
609
619
do{
610
ret = gnutls_handshake (session);
620
ret = gnutls_handshake(session);
611
621
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
612
622
613
if (ret != GNUTLS_E_SUCCESS){
623
if(ret != GNUTLS_E_SUCCESS){
614
624
if(debug){
615
625
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
616
gnutls_perror (ret);
626
gnutls_perror(ret);
617
627
}
618
628
retval = -1;
619
629
goto mandos_end;
629
639
while(true){
630
640
buffer_capacity = adjustbuffer(&buffer, buffer_length,
631
641
buffer_capacity);
632
if (buffer_capacity == 0){
642
if(buffer_capacity == 0){
633
643
perror("adjustbuffer");
634
644
retval = -1;
635
645
goto mandos_end;
636
646
}
637
647
638
ret = gnutls_record_recv(session, buffer+buffer_length,
639
BUFFER_SIZE);
640
if (ret == 0){
648
sret = gnutls_record_recv(session, buffer+buffer_length,
649
BUFFER_SIZE);
650
if(sret == 0){
641
651
break;
642
652
}
643
if (ret < 0){
644
switch(ret){
653
if(sret < 0){
654
switch(sret){
645
655
case GNUTLS_E_INTERRUPTED:
646
656
case GNUTLS_E_AGAIN:
647
657
break;
648
658
case GNUTLS_E_REHANDSHAKE:
649
659
do{
650
ret = gnutls_handshake (session);
660
ret = gnutls_handshake(session);
651
661
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
652
if (ret < 0){
662
if(ret < 0){
653
663
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
654
gnutls_perror (ret);
664
gnutls_perror(ret);
655
665
retval = -1;
656
666
goto mandos_end;
657
667
}
660
670
fprintf(stderr, "Unknown error while reading data from"
661
671
" encrypted session with Mandos server\n");
662
672
retval = -1;
663
gnutls_bye (session, GNUTLS_SHUT_RDWR);
673
gnutls_bye(session, GNUTLS_SHUT_RDWR);
664
674
goto mandos_end;
665
675
}
666
676
} else {
667
buffer_length += (size_t) ret;
677
buffer_length += (size_t) sret;
668
678
}
669
679
}
670
680
672
682
fprintf(stderr, "Closing TLS session\n");
673
683
}
674
684
675
gnutls_bye (session, GNUTLS_SHUT_RDWR);
685
gnutls_bye(session, GNUTLS_SHUT_RDWR);
676
686
677
if (buffer_length > 0){
687
if(buffer_length > 0){
678
688
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
679
689
buffer_length,
680
690
&decrypted_buffer);
681
if (decrypted_buffer_size >= 0){
691
if(decrypted_buffer_size >= 0){
682
692
written = 0;
683
693
while(written < (size_t) decrypted_buffer_size){
684
ret = (int)fwrite (decrypted_buffer + written, 1,
685
(size_t)decrypted_buffer_size - written,
686
stdout);
694
ret = (int)fwrite(decrypted_buffer + written, 1,
695
(size_t)decrypted_buffer_size - written,
696
stdout);
687
697
if(ret == 0 and ferror(stdout)){
688
698
if(debug){
689
699
fprintf(stderr, "Error writing encrypted data: %s\n",
706
716
707
717
mandos_end:
708
718
free(buffer);
709
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
719
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
710
720
if(ret == -1){
711
721
perror("close");
712
722
}
713
gnutls_deinit (session);
723
gnutls_deinit(session);
714
724
return retval;
715
725
}
716
726
727
737
AVAHI_GCC_UNUSED AvahiStringList *txt,
728
738
AVAHI_GCC_UNUSED AvahiLookupResultFlags
729
739
flags,
730
void* userdata) {
740
void* userdata){
731
741
mandos_context *mc = userdata;
732
742
assert(r);
733
743
734
744
/* Called whenever a service has been resolved successfully or
735
745
timed out */
736
746
737
switch (event) {
747
switch(event){
738
748
default:
739
749
case AVAHI_RESOLVER_FAILURE:
740
750
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
748
758
avahi_address_snprint(ip, sizeof(ip), address);
749
759
if(debug){
750
760
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
751
PRIu16 ") on port %d\n", name, host_name, ip,
752
interface, port);
761
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
762
ip, (intmax_t)interface, port);
753
763
}
754
764
int ret = start_mandos_communication(ip, port, interface, mc);
755
if (ret == 0){
765
if(ret == 0){
756
766
avahi_simple_poll_quit(mc->simple_poll);
757
767
}
758
768
}
760
770
avahi_s_service_resolver_free(r);
761
771
}
762
772
763
static void browse_callback( AvahiSServiceBrowser *b,
764
AvahiIfIndex interface,
765
AvahiProtocol protocol,
766
AvahiBrowserEvent event,
767
const char *name,
768
const char *type,
769
const char *domain,
770
AVAHI_GCC_UNUSED AvahiLookupResultFlags
771
flags,
772
void* userdata) {
773
static void browse_callback(AvahiSServiceBrowser *b,
774
AvahiIfIndex interface,
775
AvahiProtocol protocol,
776
AvahiBrowserEvent event,
777
const char *name,
778
const char *type,
779
const char *domain,
780
AVAHI_GCC_UNUSED AvahiLookupResultFlags
781
flags,
782
void* userdata){
773
783
mandos_context *mc = userdata;
774
784
assert(b);
775
785
776
786
/* Called whenever a new services becomes available on the LAN or
777
787
is removed from the LAN */
778
788
779
switch (event) {
789
switch(event){
780
790
default:
781
791
case AVAHI_BROWSER_FAILURE:
782
792
791
801
the callback function is called the Avahi server will free the
792
802
resolver for us. */
793
803
794
if (!(avahi_s_service_resolver_new(mc->server, interface,
804
if(!(avahi_s_service_resolver_new(mc->server, interface,
795
805
protocol, name, type, domain,
796
806
AVAHI_PROTO_INET6, 0,
797
807
resolve_callback, mc)))
812
822
}
813
823
814
824
int main(int argc, char *argv[]){
815
AvahiSServiceBrowser *sb = NULL;
816
int error;
817
int ret;
818
int exitcode = EXIT_SUCCESS;
819
const char *interface = "eth0";
820
struct ifreq network;
821
int sd;
822
uid_t uid;
823
gid_t gid;
824
char *connect_to = NULL;
825
char tempdir[] = "/tmp/mandosXXXXXX";
826
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
827
const char *seckey = PATHDIR "/" SECKEY;
828
const char *pubkey = PATHDIR "/" PUBKEY;
829
830
mandos_context mc = { .simple_poll = NULL, .server = NULL,
831
.dh_bits = 1024, .priority = "SECURE256"
832
":!CTYPE-X.509:+CTYPE-OPENPGP" };
833
bool gnutls_initalized = false;
834
bool gpgme_initalized = false;
835
836
{
837
struct argp_option options[] = {
838
{ .name = "debug", .key = 128,
839
.doc = "Debug mode", .group = 3 },
840
{ .name = "connect", .key = 'c',
841
.arg = "ADDRESS:PORT",
842
.doc = "Connect directly to a specific Mandos server",
843
.group = 1 },
844
{ .name = "interface", .key = 'i',
845
.arg = "NAME",
846
.doc = "Interface that will be used to search for Mandos"
847
" servers",
848
.group = 1 },
849
{ .name = "seckey", .key = 's',
850
.arg = "FILE",
851
.doc = "OpenPGP secret key file base name",
852
.group = 1 },
853
{ .name = "pubkey", .key = 'p',
854
.arg = "FILE",
855
.doc = "OpenPGP public key file base name",
856
.group = 2 },
857
{ .name = "dh-bits", .key = 129,
858
.arg = "BITS",
859
.doc = "Bit length of the prime number used in the"
860
" Diffie-Hellman key exchange",
861
.group = 2 },
862
{ .name = "priority", .key = 130,
863
.arg = "STRING",
864
.doc = "GnuTLS priority string for the TLS handshake",
865
.group = 1 },
866
{ .name = NULL }
867
};
868
869
error_t parse_opt (int key, char *arg,
870
struct argp_state *state) {
871
/* Get the INPUT argument from `argp_parse', which we know is
872
a pointer to our plugin list pointer. */
873
switch (key) {
874
case 128: /* --debug */
875
debug = true;
876
break;
877
case 'c': /* --connect */
878
connect_to = arg;
879
break;
880
case 'i': /* --interface */
881
interface = arg;
882
break;
883
case 's': /* --seckey */
884
seckey = arg;
885
break;
886
case 'p': /* --pubkey */
887
pubkey = arg;
888
break;
889
case 129: /* --dh-bits */
890
errno = 0;
891
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
892
if (errno){
893
perror("strtol");
894
exit(EXIT_FAILURE);
895
}
896
break;
897
case 130: /* --priority */
898
mc.priority = arg;
899
break;
900
case ARGP_KEY_ARG:
901
argp_usage (state);
902
case ARGP_KEY_END:
903
break;
904
default:
905
return ARGP_ERR_UNKNOWN;
906
}
907
return 0;
908
}
909
910
struct argp argp = { .options = options, .parser = parse_opt,
911
.args_doc = "",
912
.doc = "Mandos client -- Get and decrypt"
913
" passwords from a Mandos server" };
914
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
915
if (ret == ARGP_ERR_UNKNOWN){
916
fprintf(stderr, "Unknown error while parsing arguments\n");
917
exitcode = EXIT_FAILURE;
918
goto end;
919
}
920
}
921
922
/* If the interface is down, bring it up */
923
{
924
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
925
if(sd < 0) {
926
perror("socket");
927
exitcode = EXIT_FAILURE;
928
goto end;
929
}
930
strcpy(network.ifr_name, interface);
825
AvahiSServiceBrowser *sb = NULL;
826
int error;
827
int ret;
828
intmax_t tmpmax;
829
int numchars;
830
int exitcode = EXIT_SUCCESS;
831
const char *interface = "eth0";
832
struct ifreq network;
833
int sd;
834
uid_t uid;
835
gid_t gid;
836
char *connect_to = NULL;
837
char tempdir[] = "/tmp/mandosXXXXXX";
838
bool tempdir_created = false;
839
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
840
const char *seckey = PATHDIR "/" SECKEY;
841
const char *pubkey = PATHDIR "/" PUBKEY;
842
843
mandos_context mc = { .simple_poll = NULL, .server = NULL,
844
.dh_bits = 1024, .priority = "SECURE256"
845
":!CTYPE-X.509:+CTYPE-OPENPGP" };
846
bool gnutls_initialized = false;
847
bool gpgme_initialized = false;
848
double delay = 2.5;
849
850
{
851
struct argp_option options[] = {
852
{ .name = "debug", .key = 128,
853
.doc = "Debug mode", .group = 3 },
854
{ .name = "connect", .key = 'c',
855
.arg = "ADDRESS:PORT",
856
.doc = "Connect directly to a specific Mandos server",
857
.group = 1 },
858
{ .name = "interface", .key = 'i',
859
.arg = "NAME",
860
.doc = "Interface that will be used to search for Mandos"
861
" servers",
862
.group = 1 },
863
{ .name = "seckey", .key = 's',
864
.arg = "FILE",
865
.doc = "OpenPGP secret key file base name",
866
.group = 1 },
867
{ .name = "pubkey", .key = 'p',
868
.arg = "FILE",
869
.doc = "OpenPGP public key file base name",
870
.group = 2 },
871
{ .name = "dh-bits", .key = 129,
872
.arg = "BITS",
873
.doc = "Bit length of the prime number used in the"
874
" Diffie-Hellman key exchange",
875
.group = 2 },
876
{ .name = "priority", .key = 130,
877
.arg = "STRING",
878
.doc = "GnuTLS priority string for the TLS handshake",
879
.group = 1 },
880
{ .name = "delay", .key = 131,
881
.arg = "SECONDS",
882
.doc = "Maximum delay to wait for interface startup",
883
.group = 2 },
884
{ .name = NULL }
885
};
886
887
error_t parse_opt(int key, char *arg,
888
struct argp_state *state){
889
switch(key){
890
case 128: /* --debug */
891
debug = true;
892
break;
893
case 'c': /* --connect */
894
connect_to = arg;
895
break;
896
case 'i': /* --interface */
897
interface = arg;
898
break;
899
case 's': /* --seckey */
900
seckey = arg;
901
break;
902
case 'p': /* --pubkey */
903
pubkey = arg;
904
break;
905
case 129: /* --dh-bits */
906
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
907
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
908
or arg[numchars] != '\0'){
909
fprintf(stderr, "Bad number of DH bits\n");
910
exit(EXIT_FAILURE);
911
}
912
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
913
break;
914
case 130: /* --priority */
915
mc.priority = arg;
916
break;
917
case 131: /* --delay */
918
ret = sscanf(arg, "%lf%n", &delay, &numchars);
919
if(ret < 1 or arg[numchars] != '\0'){
920
fprintf(stderr, "Bad delay\n");
921
exit(EXIT_FAILURE);
922
}
923
break;
924
case ARGP_KEY_ARG:
925
argp_usage(state);
926
case ARGP_KEY_END:
927
break;
928
default:
929
return ARGP_ERR_UNKNOWN;
930
}
931
return 0;
932
}
933
934
struct argp argp = { .options = options, .parser = parse_opt,
935
.args_doc = "",
936
.doc = "Mandos client -- Get and decrypt"
937
" passwords from a Mandos server" };
938
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
939
if(ret == ARGP_ERR_UNKNOWN){
940
fprintf(stderr, "Unknown error while parsing arguments\n");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
}
945
946
/* If the interface is down, bring it up */
947
{
948
#ifdef __linux__
949
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
950
messages to mess up the prompt */
951
ret = klogctl(8, NULL, 5);
952
if(ret == -1){
953
perror("klogctl");
954
}
955
#endif
956
957
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
958
if(sd < 0){
959
perror("socket");
960
exitcode = EXIT_FAILURE;
961
#ifdef __linux__
962
ret = klogctl(7, NULL, 0);
963
if(ret == -1){
964
perror("klogctl");
965
}
966
#endif
967
goto end;
968
}
969
strcpy(network.ifr_name, interface);
970
ret = ioctl(sd, SIOCGIFFLAGS, &network);
971
if(ret == -1){
972
perror("ioctl SIOCGIFFLAGS");
973
#ifdef __linux__
974
ret = klogctl(7, NULL, 0);
975
if(ret == -1){
976
perror("klogctl");
977
}
978
#endif
979
exitcode = EXIT_FAILURE;
980
goto end;
981
}
982
if((network.ifr_flags & IFF_UP) == 0){
983
network.ifr_flags |= IFF_UP;
984
ret = ioctl(sd, SIOCSIFFLAGS, &network);
985
if(ret == -1){
986
perror("ioctl SIOCSIFFLAGS");
987
exitcode = EXIT_FAILURE;
988
#ifdef __linux__
989
ret = klogctl(7, NULL, 0);
990
if(ret == -1){
991
perror("klogctl");
992
}
993
#endif
994
goto end;
995
}
996
}
997
/* sleep checking until interface is running */
998
for(int i=0; i < delay * 4; i++){
931
999
ret = ioctl(sd, SIOCGIFFLAGS, &network);
932
1000
if(ret == -1){
933
1001
perror("ioctl SIOCGIFFLAGS");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
if((network.ifr_flags & IFF_UP) == 0){
938
network.ifr_flags |= IFF_UP;
939
ret = ioctl(sd, SIOCSIFFLAGS, &network);
940
if(ret == -1){
941
perror("ioctl SIOCSIFFLAGS");
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
}
946
ret = TEMP_FAILURE_RETRY(close(sd));
947
if(ret == -1){
948
perror("close");
949
}
950
}
951
952
uid = getuid();
953
gid = getgid();
954
955
ret = setuid(uid);
956
if (ret == -1){
957
perror("setuid");
958
}
959
960
setgid(gid);
961
if (ret == -1){
962
perror("setgid");
963
}
964
965
ret = init_gnutls_global(&mc, pubkey, seckey);
966
if (ret == -1){
967
fprintf(stderr, "init_gnutls_global failed\n");
968
exitcode = EXIT_FAILURE;
969
goto end;
970
} else {
971
gnutls_initalized = true;
972
}
973
974
if(mkdtemp(tempdir) == NULL){
975
perror("mkdtemp");
976
tempdir[0] = '\0';
977
goto end;
978
}
979
980
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
981
fprintf(stderr, "gpgme_initalized failed\n");
982
exitcode = EXIT_FAILURE;
983
goto end;
984
} else {
985
gpgme_initalized = true;
986
}
987
988
if_index = (AvahiIfIndex) if_nametoindex(interface);
989
if(if_index == 0){
990
fprintf(stderr, "No such interface: \"%s\"\n", interface);
991
exit(EXIT_FAILURE);
992
}
993
994
if(connect_to != NULL){
995
/* Connect directly, do not use Zeroconf */
996
/* (Mainly meant for debugging) */
997
char *address = strrchr(connect_to, ':');
998
if(address == NULL){
999
fprintf(stderr, "No colon in address\n");
1000
exitcode = EXIT_FAILURE;
1001
goto end;
1002
}
1003
errno = 0;
1004
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1005
if(errno){
1006
perror("Bad port number");
1007
exitcode = EXIT_FAILURE;
1008
goto end;
1009
}
1010
*address = '\0';
1011
address = connect_to;
1012
ret = start_mandos_communication(address, port, if_index, &mc);
1013
if(ret < 0){
1014
exitcode = EXIT_FAILURE;
1015
} else {
1016
exitcode = EXIT_SUCCESS;
1017
}
1018
goto end;
1019
}
1020
1021
if (not debug){
1022
avahi_set_log_function(empty_log);
1023
}
1024
1025
/* Initialize the pseudo-RNG for Avahi */
1026
srand((unsigned int) time(NULL));
1027
1028
/* Allocate main Avahi loop object */
1029
mc.simple_poll = avahi_simple_poll_new();
1030
if (mc.simple_poll == NULL) {
1031
fprintf(stderr, "Avahi: Failed to create simple poll"
1032
" object.\n");
1033
exitcode = EXIT_FAILURE;
1034
goto end;
1035
}
1036
1037
{
1038
AvahiServerConfig config;
1039
/* Do not publish any local Zeroconf records */
1040
avahi_server_config_init(&config);
1041
config.publish_hinfo = 0;
1042
config.publish_addresses = 0;
1043
config.publish_workstation = 0;
1044
config.publish_domain = 0;
1045
1046
/* Allocate a new server */
1047
mc.server = avahi_server_new(avahi_simple_poll_get
1048
(mc.simple_poll), &config, NULL,
1049
NULL, &error);
1050
1051
/* Free the Avahi configuration data */
1052
avahi_server_config_free(&config);
1053
}
1054
1055
/* Check if creating the Avahi server object succeeded */
1056
if (mc.server == NULL) {
1057
fprintf(stderr, "Failed to create Avahi server: %s\n",
1058
avahi_strerror(error));
1059
exitcode = EXIT_FAILURE;
1060
goto end;
1061
}
1062
1063
/* Create the Avahi service browser */
1064
sb = avahi_s_service_browser_new(mc.server, if_index,
1065
AVAHI_PROTO_INET6,
1066
"_mandos._tcp", NULL, 0,
1067
browse_callback, &mc);
1068
if (sb == NULL) {
1069
fprintf(stderr, "Failed to create service browser: %s\n",
1070
avahi_strerror(avahi_server_errno(mc.server)));
1071
exitcode = EXIT_FAILURE;
1072
goto end;
1073
}
1074
1075
/* Run the main loop */
1076
1077
if (debug){
1078
fprintf(stderr, "Starting Avahi loop search\n");
1079
}
1080
1081
avahi_simple_poll_loop(mc.simple_poll);
1082
1002
} else if(network.ifr_flags & IFF_RUNNING){
1003
break;
1004
}
1005
struct timespec sleeptime = { .tv_nsec = 250000000 };
1006
ret = nanosleep(&sleeptime, NULL);
1007
if(ret == -1 and errno != EINTR){
1008
perror("nanosleep");
1009
}
1010
}
1011
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1012
if(ret == -1){
1013
perror("close");
1014
}
1015
#ifdef __linux__
1016
/* Restores kernel loglevel to default */
1017
ret = klogctl(7, NULL, 0);
1018
if(ret == -1){
1019
perror("klogctl");
1020
}
1021
#endif
1022
}
1023
1024
uid = getuid();
1025
gid = getgid();
1026
1027
setgid(gid);
1028
if(ret == -1){
1029
perror("setgid");
1030
}
1031
1032
ret = setuid(uid);
1033
if(ret == -1){
1034
perror("setuid");
1035
}
1036
1037
ret = init_gnutls_global(&mc, pubkey, seckey);
1038
if(ret == -1){
1039
fprintf(stderr, "init_gnutls_global failed\n");
1040
exitcode = EXIT_FAILURE;
1041
goto end;
1042
} else {
1043
gnutls_initialized = true;
1044
}
1045
1046
if(mkdtemp(tempdir) == NULL){
1047
perror("mkdtemp");
1048
goto end;
1049
}
1050
tempdir_created = true;
1051
1052
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1053
fprintf(stderr, "init_gpgme failed\n");
1054
exitcode = EXIT_FAILURE;
1055
goto end;
1056
} else {
1057
gpgme_initialized = true;
1058
}
1059
1060
if_index = (AvahiIfIndex) if_nametoindex(interface);
1061
if(if_index == 0){
1062
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1063
exitcode = EXIT_FAILURE;
1064
goto end;
1065
}
1066
1067
if(connect_to != NULL){
1068
/* Connect directly, do not use Zeroconf */
1069
/* (Mainly meant for debugging) */
1070
char *address = strrchr(connect_to, ':');
1071
if(address == NULL){
1072
fprintf(stderr, "No colon in address\n");
1073
exitcode = EXIT_FAILURE;
1074
goto end;
1075
}
1076
uint16_t port;
1077
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1078
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1079
or address[numchars+1] != '\0'){
1080
fprintf(stderr, "Bad port number\n");
1081
exitcode = EXIT_FAILURE;
1082
goto end;
1083
}
1084
port = (uint16_t)tmpmax;
1085
*address = '\0';
1086
address = connect_to;
1087
ret = start_mandos_communication(address, port, if_index, &mc);
1088
if(ret < 0){
1089
exitcode = EXIT_FAILURE;
1090
} else {
1091
exitcode = EXIT_SUCCESS;
1092
}
1093
goto end;
1094
}
1095
1096
if(not debug){
1097
avahi_set_log_function(empty_log);
1098
}
1099
1100
/* Initialize the pseudo-RNG for Avahi */
1101
srand((unsigned int) time(NULL));
1102
1103
/* Allocate main Avahi loop object */
1104
mc.simple_poll = avahi_simple_poll_new();
1105
if(mc.simple_poll == NULL){
1106
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1107
exitcode = EXIT_FAILURE;
1108
goto end;
1109
}
1110
1111
{
1112
AvahiServerConfig config;
1113
/* Do not publish any local Zeroconf records */
1114
avahi_server_config_init(&config);
1115
config.publish_hinfo = 0;
1116
config.publish_addresses = 0;
1117
config.publish_workstation = 0;
1118
config.publish_domain = 0;
1119
1120
/* Allocate a new server */
1121
mc.server = avahi_server_new(avahi_simple_poll_get
1122
(mc.simple_poll), &config, NULL,
1123
NULL, &error);
1124
1125
/* Free the Avahi configuration data */
1126
avahi_server_config_free(&config);
1127
}
1128
1129
/* Check if creating the Avahi server object succeeded */
1130
if(mc.server == NULL){
1131
fprintf(stderr, "Failed to create Avahi server: %s\n",
1132
avahi_strerror(error));
1133
exitcode = EXIT_FAILURE;
1134
goto end;
1135
}
1136
1137
/* Create the Avahi service browser */
1138
sb = avahi_s_service_browser_new(mc.server, if_index,
1139
AVAHI_PROTO_INET6, "_mandos._tcp",
1140
NULL, 0, browse_callback, &mc);
1141
if(sb == NULL){
1142
fprintf(stderr, "Failed to create service browser: %s\n",
1143
avahi_strerror(avahi_server_errno(mc.server)));
1144
exitcode = EXIT_FAILURE;
1145
goto end;
1146
}
1147
1148
/* Run the main loop */
1149
1150
if(debug){
1151
fprintf(stderr, "Starting Avahi loop search\n");
1152
}
1153
1154
avahi_simple_poll_loop(mc.simple_poll);
1155
1083
1156
end:
1084
1085
if (debug){
1086
fprintf(stderr, "%s exiting\n", argv[0]);
1087
}
1088
1089
/* Cleanup things */
1090
if (sb != NULL)
1091
avahi_s_service_browser_free(sb);
1092
1093
if (mc.server != NULL)
1094
avahi_server_free(mc.server);
1095
1096
if (mc.simple_poll != NULL)
1097
avahi_simple_poll_free(mc.simple_poll);
1098
1099
if (gnutls_initalized){
1100
gnutls_certificate_free_credentials(mc.cred);
1101
gnutls_global_deinit ();
1102
gnutls_dh_params_deinit(mc.dh_params);
1103
}
1104
1105
if(gpgme_initalized){
1106
gpgme_release(mc.ctx);
1107
}
1108
1109
/* Removes the temp directory used by GPGME */
1110
if(tempdir[0] != '\0'){
1111
DIR *d;
1112
struct dirent *direntry;
1113
d = opendir(tempdir);
1114
if(d == NULL){
1157
1158
if(debug){
1159
fprintf(stderr, "%s exiting\n", argv[0]);
1160
}
1161
1162
/* Cleanup things */
1163
if(sb != NULL)
1164
avahi_s_service_browser_free(sb);
1165
1166
if(mc.server != NULL)
1167
avahi_server_free(mc.server);
1168
1169
if(mc.simple_poll != NULL)
1170
avahi_simple_poll_free(mc.simple_poll);
1171
1172
if(gnutls_initialized){
1173
gnutls_certificate_free_credentials(mc.cred);
1174
gnutls_global_deinit();
1175
gnutls_dh_params_deinit(mc.dh_params);
1176
}
1177
1178
if(gpgme_initialized){
1179
gpgme_release(mc.ctx);
1180
}
1181
1182
/* Removes the temp directory used by GPGME */
1183
if(tempdir_created){
1184
DIR *d;
1185
struct dirent *direntry;
1186
d = opendir(tempdir);
1187
if(d == NULL){
1188
if(errno != ENOENT){
1115
1189
perror("opendir");
1116
} else {
1117
while(true){
1118
direntry = readdir(d);
1119
if(direntry == NULL){
1120
break;
1121
}
1122
if (direntry->d_type == DT_REG){
1123
char *fullname = NULL;
1124
ret = asprintf(&fullname, "%s/%s", tempdir,
1125
direntry->d_name);
1126
if(ret < 0){
1127
perror("asprintf");
1128
continue;
1129
}
1130
ret = unlink(fullname);
1131
if(ret == -1){
1132
fprintf(stderr, "unlink(\"%s\"): %s",
1133
fullname, strerror(errno));
1134
}
1135
free(fullname);
1136
}
1137
}
1138
closedir(d);
1139
}
1140
ret = rmdir(tempdir);
1141
if(ret == -1){
1142
perror("rmdir");
1143
}
1144
}
1145
1146
return exitcode;
1190
}
1191
} else {
1192
while(true){
1193
direntry = readdir(d);
1194
if(direntry == NULL){
1195
break;
1196
}
1197
/* Skip "." and ".." */
1198
if(direntry->d_name[0] == '.'
1199
and (direntry->d_name[1] == '\0'
1200
or (direntry->d_name[1] == '.'
1201
and direntry->d_name[2] == '\0'))){
1202
continue;
1203
}
1204
char *fullname = NULL;
1205
ret = asprintf(&fullname, "%s/%s", tempdir,
1206
direntry->d_name);
1207
if(ret < 0){
1208
perror("asprintf");
1209
continue;
1210
}
1211
ret = remove(fullname);
1212
if(ret == -1){
1213
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1214
strerror(errno));
1215
}
1216
free(fullname);
1217
}
1218
closedir(d);
1219
}
1220
ret = rmdir(tempdir);
1221
if(ret == -1 and errno != ENOENT){
1222
perror("rmdir");
1223
}
1224
}
1225
1226
return exitcode;
1147
1227
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0