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- Committer: Teddy Hogeborn
- Date: 2009-02-13 08:00:47 UTC
- mfrom: (315 mandos)
- mto: (24.1.170 mandos) (237.4.29 release)
- mto: This revision was merged to the branch mainline in revision 316.
- Revision ID: teddy@fukt.bsnet.se-20090213080047-eibfmj4j2a9zt53d
Merge from trunk. Notable changes:
1. Server package now depends on "python-gobject".
2. Permission fix for /lib64.
3. Support for DEVICE setting from initramfs.conf, kernel parameters
"ip=" and "mandos=connect".
4. Fix for the bug where the server would stop responding, with a
zombie checker process.
5. Add support for disabling IPv6 in the server
6. Fix for the bug which made the server, plugin-runner and
mandos-client fail to change group ID.
7. Add GnuTLS debugging to server debug output.
8. Fix for the bug of the "--options-for" option of plugin-runner,
where it would cut the value at the first colon character.
9. Stop using sscanf() throughout, since it does not detect overflow.
10. Fix for the bug where plugin-runner would not go to the fallback
if all plugins failed.
11. Fix for the bug where mandos-client would not clean up after a
signal.
12. Added support for connecting to IPv4 addresses in mandos-client.
13. Added support for not using a specific network interface in
mandos-client.
14. Kernel log level will be lowered by mandos-client while bringing
up the network interface.
15. Add an option for the maximum time for mandos-client to wait for
the network interface to come up.
16. Fix for the bug where mandos-client would not clean the temporary
directory on some filesystems.
1. Server package now depends on "python-gobject".
2. Permission fix for /lib64.
3. Support for DEVICE setting from initramfs.conf, kernel parameters
"ip=" and "mandos=connect".
4. Fix for the bug where the server would stop responding, with a
zombie checker process.
5. Add support for disabling IPv6 in the server
6. Fix for the bug which made the server, plugin-runner and
mandos-client fail to change group ID.
7. Add GnuTLS debugging to server debug output.
8. Fix for the bug of the "--options-for" option of plugin-runner,
where it would cut the value at the first colon character.
9. Stop using sscanf() throughout, since it does not detect overflow.
10. Fix for the bug where plugin-runner would not go to the fallback
if all plugins failed.
11. Fix for the bug where mandos-client would not clean up after a
signal.
12. Added support for connecting to IPv4 addresses in mandos-client.
13. Added support for not using a specific network interface in
mandos-client.
14. Kernel log level will be lowered by mandos-client while bringing
up the network interface.
15. Add an option for the maximum time for mandos-client to wait for
the network interface to come up.
16. Fix for the bug where mandos-client would not clean the temporary
directory on some filesystems.
- files modified:
- INSTALL
added
removed
plugins.d/mandos-client.c
36
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
37
38
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf */
39
stdout, ferror(), remove() */
40
40
#include <stdint.h> /* uint16_t, uint32_t */
41
41
#include <stddef.h> /* NULL, size_t, ssize_t */
42
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
44
#include <stdbool.h> /* bool, true */
43
srand(), strtof() */
44
#include <stdbool.h> /* bool, false, true */
45
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/ioctl.h> /* ioctl */
48
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
49
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(),
52
DIR */
50
SOCK_STREAM, uid_t, gid_t, open(),
51
opendir(), DIR */
53
52
#include <sys/stat.h> /* open() */
54
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
56
connect() */
54
inet_pton(), connect() */
57
55
#include <fcntl.h> /* open() */
58
56
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
57
*/
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
58
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
59
strtoimax() */
61
60
#include <assert.h> /* assert() */
62
61
#include <errno.h> /* perror(), errno */
63
#include <time.h> /* time() */
62
#include <time.h> /* nanosleep(), time() */
64
63
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
65
64
SIOCSIFFLAGS, if_indextoname(),
66
65
if_nametoindex(), IF_NAMESIZE */
67
#include <netinet/in.h>
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
68
*/
68
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
70
getuid(), getgid(), setuid(),
70
71
setgid() */
71
72
#include <arpa/inet.h> /* inet_pton(), htons */
72
#include <iso646.h> /* not, and, or */
73
#include <iso646.h> /* not, or, and */
73
74
#include <argp.h> /* struct argp_option, error_t, struct
74
75
argp_state, struct argp,
75
76
argp_parse(), ARGP_KEY_ARG,
76
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <signal.h> /* sigemptyset(), sigaddset(),
79
sigaction(), SIGTERM, sigaction,
80
sig_atomic_t */
81
82
#ifdef __linux__
83
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
77
85
78
86
/* Avahi */
79
87
/* All Avahi types, constants and functions
125
133
gpgme_ctx_t ctx;
126
134
} mandos_context;
127
135
136
/* global context so signal handler can reach it*/
137
mandos_context mc = { .simple_poll = NULL, .server = NULL,
138
.dh_bits = 1024, .priority = "SECURE256"
139
":!CTYPE-X.509:+CTYPE-OPENPGP" };
140
128
141
/*
129
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
130
* "buffer_capacity" is how much is currently allocated,
142
* Make additional room in "buffer" for at least BUFFER_SIZE more
143
* bytes. "buffer_capacity" is how much is currently allocated,
131
144
* "buffer_length" is how much is already used.
132
145
*/
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
146
size_t incbuffer(char **buffer, size_t buffer_length,
134
147
size_t buffer_capacity){
135
148
if(buffer_length + BUFFER_SIZE > buffer_capacity){
136
149
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
145
158
/*
146
159
* Initialize GPGME.
147
160
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
161
static bool init_gpgme(const char *seckey,
149
162
const char *pubkey, const char *tempdir){
150
163
int ret;
151
164
gpgme_error_t rc;
153
166
154
167
155
168
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
169
* Helper function to insert pub and seckey to the engine keyring.
157
170
*/
158
171
bool import_key(const char *filename){
159
172
int fd;
172
185
return false;
173
186
}
174
187
175
rc = gpgme_op_import(mc->ctx, pgp_data);
188
rc = gpgme_op_import(mc.ctx, pgp_data);
176
189
if(rc != GPG_ERR_NO_ERROR){
177
190
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
191
gpgme_strsource(rc), gpgme_strerror(rc));
188
201
}
189
202
190
203
if(debug){
191
fprintf(stderr, "Initialize gpgme\n");
204
fprintf(stderr, "Initializing GPGME\n");
192
205
}
193
206
194
207
/* Init GPGME */
221
234
}
222
235
223
236
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
237
rc = gpgme_new(&(mc.ctx));
225
238
if(rc != GPG_ERR_NO_ERROR){
226
239
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
240
gpgme_strsource(rc), gpgme_strerror(rc));
239
252
* Decrypt OpenPGP data.
240
253
* Returns -1 on error
241
254
*/
242
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
243
const char *cryptotext,
255
static ssize_t pgp_packet_decrypt(const char *cryptotext,
244
256
size_t crypto_size,
245
257
char **plaintext){
246
258
gpgme_data_t dh_crypto, dh_plain;
273
285
274
286
/* Decrypt data from the cryptotext data buffer to the plaintext
275
287
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
288
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
277
289
if(rc != GPG_ERR_NO_ERROR){
278
290
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
291
gpgme_strsource(rc), gpgme_strerror(rc));
280
292
plaintext_length = -1;
281
293
if(debug){
282
294
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
295
result = gpgme_op_decrypt_result(mc.ctx);
284
296
if(result == NULL){
285
297
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
298
} else {
322
334
323
335
*plaintext = NULL;
324
336
while(true){
325
plaintext_capacity = adjustbuffer(plaintext,
337
plaintext_capacity = incbuffer(plaintext,
326
338
(size_t)plaintext_length,
327
339
plaintext_capacity);
328
340
if(plaintext_capacity == 0){
329
perror("adjustbuffer");
341
perror("incbuffer");
330
342
plaintext_length = -1;
331
343
goto decrypt_end;
332
344
}
364
376
return plaintext_length;
365
377
}
366
378
367
static const char * safer_gnutls_strerror(int value) {
379
static const char * safer_gnutls_strerror(int value){
368
380
const char *ret = gnutls_strerror(value); /* Spurious warning from
369
381
-Wunreachable-code */
370
382
if(ret == NULL)
378
390
fprintf(stderr, "GnuTLS: %s", string);
379
391
}
380
392
381
static int init_gnutls_global(mandos_context *mc,
382
const char *pubkeyfilename,
393
static int init_gnutls_global(const char *pubkeyfilename,
383
394
const char *seckeyfilename){
384
395
int ret;
385
396
388
399
}
389
400
390
401
ret = gnutls_global_init();
391
if(ret != GNUTLS_E_SUCCESS) {
402
if(ret != GNUTLS_E_SUCCESS){
392
403
fprintf(stderr, "GnuTLS global_init: %s\n",
393
404
safer_gnutls_strerror(ret));
394
405
return -1;
403
414
}
404
415
405
416
/* OpenPGP credentials */
406
gnutls_certificate_allocate_credentials(&mc->cred);
417
gnutls_certificate_allocate_credentials(&mc.cred);
407
418
if(ret != GNUTLS_E_SUCCESS){
408
419
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
409
* from
410
* -Wunreachable-code
411
*/
420
from
421
-Wunreachable-code
422
*/
412
423
safer_gnutls_strerror(ret));
413
424
gnutls_global_deinit();
414
425
return -1;
421
432
}
422
433
423
434
ret = gnutls_certificate_set_openpgp_key_file
424
(mc->cred, pubkeyfilename, seckeyfilename,
435
(mc.cred, pubkeyfilename, seckeyfilename,
425
436
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
437
if(ret != GNUTLS_E_SUCCESS){
427
438
fprintf(stderr,
428
439
"Error[%d] while reading the OpenPGP key pair ('%s',"
429
440
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
433
444
}
434
445
435
446
/* GnuTLS server initialization */
436
ret = gnutls_dh_params_init(&mc->dh_params);
437
if(ret != GNUTLS_E_SUCCESS) {
447
ret = gnutls_dh_params_init(&mc.dh_params);
448
if(ret != GNUTLS_E_SUCCESS){
438
449
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
450
" %s\n", safer_gnutls_strerror(ret));
440
451
goto globalfail;
441
452
}
442
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
443
if(ret != GNUTLS_E_SUCCESS) {
453
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
454
if(ret != GNUTLS_E_SUCCESS){
444
455
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
456
safer_gnutls_strerror(ret));
446
457
goto globalfail;
447
458
}
448
459
449
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
460
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
450
461
451
462
return 0;
452
463
453
464
globalfail:
454
465
455
gnutls_certificate_free_credentials(mc->cred);
466
gnutls_certificate_free_credentials(mc.cred);
456
467
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
468
gnutls_dh_params_deinit(mc.dh_params);
458
469
return -1;
459
470
}
460
471
461
static int init_gnutls_session(mandos_context *mc,
462
gnutls_session_t *session){
472
static int init_gnutls_session(gnutls_session_t *session){
463
473
int ret;
464
474
/* GnuTLS session creation */
465
475
ret = gnutls_init(session, GNUTLS_SERVER);
470
480
471
481
{
472
482
const char *err;
473
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
474
if(ret != GNUTLS_E_SUCCESS) {
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
484
if(ret != GNUTLS_E_SUCCESS){
475
485
fprintf(stderr, "Syntax error at: %s\n", err);
476
486
fprintf(stderr, "GnuTLS error: %s\n",
477
487
safer_gnutls_strerror(ret));
481
491
}
482
492
483
493
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
484
mc->cred);
485
if(ret != GNUTLS_E_SUCCESS) {
494
mc.cred);
495
if(ret != GNUTLS_E_SUCCESS){
486
496
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
487
497
safer_gnutls_strerror(ret));
488
498
gnutls_deinit(*session);
493
503
gnutls_certificate_server_set_request(*session,
494
504
GNUTLS_CERT_IGNORE);
495
505
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
506
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
497
507
498
508
return 0;
499
509
}
505
515
/* Called when a Mandos server is found */
506
516
static int start_mandos_communication(const char *ip, uint16_t port,
507
517
AvahiIfIndex if_index,
508
mandos_context *mc){
518
int af){
509
519
int ret, tcp_sd;
510
520
ssize_t sret;
511
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
521
union {
522
struct sockaddr_in in;
523
struct sockaddr_in6 in6;
524
} to;
512
525
char *buffer = NULL;
513
526
char *decrypted_buffer;
514
527
size_t buffer_length = 0;
516
529
ssize_t decrypted_buffer_size;
517
530
size_t written;
518
531
int retval = 0;
519
char interface[IF_NAMESIZE];
520
532
gnutls_session_t session;
521
522
ret = init_gnutls_session(mc, &session);
533
int pf; /* Protocol family */
534
535
switch(af){
536
case AF_INET6:
537
pf = PF_INET6;
538
break;
539
case AF_INET:
540
pf = PF_INET;
541
break;
542
default:
543
fprintf(stderr, "Bad address family: %d\n", af);
544
return -1;
545
}
546
547
ret = init_gnutls_session(&session);
523
548
if(ret != 0){
524
549
return -1;
525
550
}
526
551
527
552
if(debug){
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
553
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
529
554
"\n", ip, port);
530
555
}
531
556
532
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
533
if(tcp_sd < 0) {
557
tcp_sd = socket(pf, SOCK_STREAM, 0);
558
if(tcp_sd < 0){
534
559
perror("socket");
535
560
return -1;
536
561
}
537
562
538
if(debug){
539
if(if_indextoname((unsigned int)if_index, interface) == NULL){
540
perror("if_indextoname");
541
return -1;
542
}
543
fprintf(stderr, "Binding to interface %s\n", interface);
544
}
545
546
563
memset(&to, 0, sizeof(to));
547
to.in6.sin6_family = AF_INET6;
548
/* It would be nice to have a way to detect if we were passed an
549
IPv4 address here. Now we assume an IPv6 address. */
550
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
564
if(af == AF_INET6){
565
to.in6.sin6_family = (uint16_t)af;
566
ret = inet_pton(af, ip, &to.in6.sin6_addr);
567
} else { /* IPv4 */
568
to.in.sin_family = (sa_family_t)af;
569
ret = inet_pton(af, ip, &to.in.sin_addr);
570
}
551
571
if(ret < 0 ){
552
572
perror("inet_pton");
553
573
return -1;
556
576
fprintf(stderr, "Bad address: %s\n", ip);
557
577
return -1;
558
578
}
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
579
if(af == AF_INET6){
580
to.in6.sin6_port = htons(port); /* Spurious warnings from
581
-Wconversion and
582
-Wunreachable-code */
583
584
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
585
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
586
-Wunreachable-code*/
587
if(if_index == AVAHI_IF_UNSPEC){
588
fprintf(stderr, "An IPv6 link-local address is incomplete"
589
" without a network interface\n");
590
return -1;
591
}
592
/* Set the network interface number as scope */
593
to.in6.sin6_scope_id = (uint32_t)if_index;
594
}
595
} else {
596
to.in.sin_port = htons(port); /* Spurious warnings from
560
597
-Wconversion and
561
598
-Wunreachable-code */
562
563
to.in6.sin6_scope_id = (uint32_t)if_index;
599
}
564
600
565
601
if(debug){
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
568
char addrstr[INET6_ADDRSTRLEN] = "";
569
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
570
sizeof(addrstr)) == NULL){
602
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
603
char interface[IF_NAMESIZE];
604
if(if_indextoname((unsigned int)if_index, interface) == NULL){
605
perror("if_indextoname");
606
} else {
607
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
608
ip, interface, port);
609
}
610
} else {
611
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
612
port);
613
}
614
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
615
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
616
const char *pcret;
617
if(af == AF_INET6){
618
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
619
sizeof(addrstr));
620
} else {
621
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
622
sizeof(addrstr));
623
}
624
if(pcret == NULL){
571
625
perror("inet_ntop");
572
626
} else {
573
627
if(strcmp(addrstr, ip) != 0){
576
630
}
577
631
}
578
632
579
ret = connect(tcp_sd, &to.in, sizeof(to));
633
if(af == AF_INET6){
634
ret = connect(tcp_sd, &to.in6, sizeof(to));
635
} else {
636
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
637
}
580
638
if(ret < 0){
581
639
perror("connect");
582
640
return -1;
628
686
/* Read OpenPGP packet that contains the wanted password */
629
687
630
688
if(debug){
631
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
689
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
632
690
ip);
633
691
}
634
692
635
693
while(true){
636
buffer_capacity = adjustbuffer(&buffer, buffer_length,
694
buffer_capacity = incbuffer(&buffer, buffer_length,
637
695
buffer_capacity);
638
696
if(buffer_capacity == 0){
639
perror("adjustbuffer");
697
perror("incbuffer");
640
698
retval = -1;
641
699
goto mandos_end;
642
700
}
681
739
gnutls_bye(session, GNUTLS_SHUT_RDWR);
682
740
683
741
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
742
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
743
buffer_length,
686
744
&decrypted_buffer);
687
745
if(decrypted_buffer_size >= 0){
722
780
723
781
static void resolve_callback(AvahiSServiceResolver *r,
724
782
AvahiIfIndex interface,
725
AVAHI_GCC_UNUSED AvahiProtocol protocol,
783
AvahiProtocol proto,
726
784
AvahiResolverEvent event,
727
785
const char *name,
728
786
const char *type,
733
791
AVAHI_GCC_UNUSED AvahiStringList *txt,
734
792
AVAHI_GCC_UNUSED AvahiLookupResultFlags
735
793
flags,
736
void* userdata) {
737
mandos_context *mc = userdata;
794
AVAHI_GCC_UNUSED void* userdata){
738
795
assert(r);
739
796
740
797
/* Called whenever a service has been resolved successfully or
741
798
timed out */
742
799
743
switch(event) {
800
switch(event){
744
801
default:
745
802
case AVAHI_RESOLVER_FAILURE:
746
803
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
747
804
" of type '%s' in domain '%s': %s\n", name, type, domain,
748
avahi_strerror(avahi_server_errno(mc->server)));
805
avahi_strerror(avahi_server_errno(mc.server)));
749
806
break;
750
807
751
808
case AVAHI_RESOLVER_FOUND:
757
814
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
758
815
ip, (intmax_t)interface, port);
759
816
}
760
int ret = start_mandos_communication(ip, port, interface, mc);
817
int ret = start_mandos_communication(ip, port, interface,
818
avahi_proto_to_af(proto));
761
819
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
820
avahi_simple_poll_quit(mc.simple_poll);
763
821
}
764
822
}
765
823
}
766
824
avahi_s_service_resolver_free(r);
767
825
}
768
826
769
static void browse_callback( AvahiSServiceBrowser *b,
770
AvahiIfIndex interface,
771
AvahiProtocol protocol,
772
AvahiBrowserEvent event,
773
const char *name,
774
const char *type,
775
const char *domain,
776
AVAHI_GCC_UNUSED AvahiLookupResultFlags
777
flags,
778
void* userdata) {
779
mandos_context *mc = userdata;
827
static void browse_callback(AvahiSServiceBrowser *b,
828
AvahiIfIndex interface,
829
AvahiProtocol protocol,
830
AvahiBrowserEvent event,
831
const char *name,
832
const char *type,
833
const char *domain,
834
AVAHI_GCC_UNUSED AvahiLookupResultFlags
835
flags,
836
AVAHI_GCC_UNUSED void* userdata){
780
837
assert(b);
781
838
782
839
/* Called whenever a new services becomes available on the LAN or
783
840
is removed from the LAN */
784
841
785
switch(event) {
842
switch(event){
786
843
default:
787
844
case AVAHI_BROWSER_FAILURE:
788
845
789
846
fprintf(stderr, "(Avahi browser) %s\n",
790
avahi_strerror(avahi_server_errno(mc->server)));
791
avahi_simple_poll_quit(mc->simple_poll);
847
avahi_strerror(avahi_server_errno(mc.server)));
848
avahi_simple_poll_quit(mc.simple_poll);
792
849
return;
793
850
794
851
case AVAHI_BROWSER_NEW:
797
854
the callback function is called the Avahi server will free the
798
855
resolver for us. */
799
856
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
801
protocol, name, type, domain,
802
AVAHI_PROTO_INET6, 0,
803
resolve_callback, mc)))
857
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
858
name, type, domain, protocol, 0,
859
resolve_callback, NULL) == NULL)
804
860
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
805
name, avahi_strerror(avahi_server_errno(mc->server)));
861
name, avahi_strerror(avahi_server_errno(mc.server)));
806
862
break;
807
863
808
864
case AVAHI_BROWSER_REMOVE:
817
873
}
818
874
}
819
875
876
sig_atomic_t quit_now = 0;
877
878
/* stop main loop after sigterm has been called */
879
static void handle_sigterm(__attribute__((unused)) int sig){
880
if(quit_now){
881
return;
882
}
883
quit_now = 1;
884
int old_errno = errno;
885
if(mc.simple_poll != NULL){
886
avahi_simple_poll_quit(mc.simple_poll);
887
}
888
errno = old_errno;
889
}
890
820
891
int main(int argc, char *argv[]){
821
AvahiSServiceBrowser *sb = NULL;
822
int error;
823
int ret;
824
intmax_t tmpmax;
825
int numchars;
826
int exitcode = EXIT_SUCCESS;
827
const char *interface = "eth0";
828
struct ifreq network;
829
int sd;
830
uid_t uid;
831
gid_t gid;
832
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
834
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
838
mandos_context mc = { .simple_poll = NULL, .server = NULL,
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
841
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
843
844
{
845
struct argp_option options[] = {
846
{ .name = "debug", .key = 128,
847
.doc = "Debug mode", .group = 3 },
848
{ .name = "connect", .key = 'c',
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
851
.group = 1 },
852
{ .name = "interface", .key = 'i',
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
856
.group = 1 },
857
{ .name = "seckey", .key = 's',
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
860
.group = 1 },
861
{ .name = "pubkey", .key = 'p',
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
864
.group = 2 },
865
{ .name = "dh-bits", .key = 129,
866
.arg = "BITS",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
869
.group = 2 },
870
{ .name = "priority", .key = 130,
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
874
{ .name = NULL }
875
};
876
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
881
debug = true;
882
break;
883
case 'c': /* --connect */
884
connect_to = arg;
885
break;
886
case 'i': /* --interface */
887
interface = arg;
888
break;
889
case 's': /* --seckey */
890
seckey = arg;
891
break;
892
case 'p': /* --pubkey */
893
pubkey = arg;
894
break;
895
case 129: /* --dh-bits */
896
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
897
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
898
or arg[numchars] != '\0'){
899
fprintf(stderr, "Bad number of DH bits\n");
900
exit(EXIT_FAILURE);
892
AvahiSServiceBrowser *sb = NULL;
893
int error;
894
int ret;
895
intmax_t tmpmax;
896
char *tmp;
897
int exitcode = EXIT_SUCCESS;
898
const char *interface = "eth0";
899
struct ifreq network;
900
int sd;
901
uid_t uid;
902
gid_t gid;
903
char *connect_to = NULL;
904
char tempdir[] = "/tmp/mandosXXXXXX";
905
bool tempdir_created = false;
906
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
907
const char *seckey = PATHDIR "/" SECKEY;
908
const char *pubkey = PATHDIR "/" PUBKEY;
909
910
bool gnutls_initialized = false;
911
bool gpgme_initialized = false;
912
float delay = 2.5f;
913
914
struct sigaction old_sigterm_action;
915
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
916
917
{
918
struct argp_option options[] = {
919
{ .name = "debug", .key = 128,
920
.doc = "Debug mode", .group = 3 },
921
{ .name = "connect", .key = 'c',
922
.arg = "ADDRESS:PORT",
923
.doc = "Connect directly to a specific Mandos server",
924
.group = 1 },
925
{ .name = "interface", .key = 'i',
926
.arg = "NAME",
927
.doc = "Network interface that will be used to search for"
928
" Mandos servers",
929
.group = 1 },
930
{ .name = "seckey", .key = 's',
931
.arg = "FILE",
932
.doc = "OpenPGP secret key file base name",
933
.group = 1 },
934
{ .name = "pubkey", .key = 'p',
935
.arg = "FILE",
936
.doc = "OpenPGP public key file base name",
937
.group = 2 },
938
{ .name = "dh-bits", .key = 129,
939
.arg = "BITS",
940
.doc = "Bit length of the prime number used in the"
941
" Diffie-Hellman key exchange",
942
.group = 2 },
943
{ .name = "priority", .key = 130,
944
.arg = "STRING",
945
.doc = "GnuTLS priority string for the TLS handshake",
946
.group = 1 },
947
{ .name = "delay", .key = 131,
948
.arg = "SECONDS",
949
.doc = "Maximum delay to wait for interface startup",
950
.group = 2 },
951
{ .name = NULL }
952
};
953
954
error_t parse_opt(int key, char *arg,
955
struct argp_state *state){
956
switch(key){
957
case 128: /* --debug */
958
debug = true;
959
break;
960
case 'c': /* --connect */
961
connect_to = arg;
962
break;
963
case 'i': /* --interface */
964
interface = arg;
965
break;
966
case 's': /* --seckey */
967
seckey = arg;
968
break;
969
case 'p': /* --pubkey */
970
pubkey = arg;
971
break;
972
case 129: /* --dh-bits */
973
errno = 0;
974
tmpmax = strtoimax(arg, &tmp, 10);
975
if(errno != 0 or tmp == arg or *tmp != '\0'
976
or tmpmax != (typeof(mc.dh_bits))tmpmax){
977
fprintf(stderr, "Bad number of DH bits\n");
978
exit(EXIT_FAILURE);
979
}
980
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
981
break;
982
case 130: /* --priority */
983
mc.priority = arg;
984
break;
985
case 131: /* --delay */
986
errno = 0;
987
delay = strtof(arg, &tmp);
988
if(errno != 0 or tmp == arg or *tmp != '\0'){
989
fprintf(stderr, "Bad delay\n");
990
exit(EXIT_FAILURE);
991
}
992
break;
993
case ARGP_KEY_ARG:
994
argp_usage(state);
995
case ARGP_KEY_END:
996
break;
997
default:
998
return ARGP_ERR_UNKNOWN;
999
}
1000
return 0;
1001
}
1002
1003
struct argp argp = { .options = options, .parser = parse_opt,
1004
.args_doc = "",
1005
.doc = "Mandos client -- Get and decrypt"
1006
" passwords from a Mandos server" };
1007
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1008
if(ret == ARGP_ERR_UNKNOWN){
1009
fprintf(stderr, "Unknown error while parsing arguments\n");
1010
exitcode = EXIT_FAILURE;
1011
goto end;
1012
}
1013
}
1014
1015
if(not debug){
1016
avahi_set_log_function(empty_log);
1017
}
1018
1019
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1020
from the signal handler */
1021
/* Initialize the pseudo-RNG for Avahi */
1022
srand((unsigned int) time(NULL));
1023
mc.simple_poll = avahi_simple_poll_new();
1024
if(mc.simple_poll == NULL){
1025
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1026
exitcode = EXIT_FAILURE;
1027
goto end;
1028
}
1029
1030
sigemptyset(&sigterm_action.sa_mask);
1031
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1032
if(ret == -1){
1033
perror("sigaddset");
1034
exitcode = EXIT_FAILURE;
1035
goto end;
1036
}
1037
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1038
if(ret == -1){
1039
perror("sigaddset");
1040
exitcode = EXIT_FAILURE;
1041
goto end;
1042
}
1043
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1044
if(ret == -1){
1045
perror("sigaddset");
1046
exitcode = EXIT_FAILURE;
1047
goto end;
1048
}
1049
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1050
if(ret == -1){
1051
perror("sigaction");
1052
exitcode = EXIT_FAILURE;
1053
goto end;
1054
}
1055
1056
/* If the interface is down, bring it up */
1057
if(interface[0] != '\0'){
1058
#ifdef __linux__
1059
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1060
messages to mess up the prompt */
1061
ret = klogctl(8, NULL, 5);
1062
bool restore_loglevel = true;
1063
if(ret == -1){
1064
restore_loglevel = false;
1065
perror("klogctl");
1066
}
1067
#endif /* __linux__ */
1068
1069
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1070
if(sd < 0){
1071
perror("socket");
1072
exitcode = EXIT_FAILURE;
1073
#ifdef __linux__
1074
if(restore_loglevel){
1075
ret = klogctl(7, NULL, 0);
1076
if(ret == -1){
1077
perror("klogctl");
1078
}
1079
}
1080
#endif /* __linux__ */
1081
goto end;
1082
}
1083
strcpy(network.ifr_name, interface);
1084
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1085
if(ret == -1){
1086
perror("ioctl SIOCGIFFLAGS");
1087
#ifdef __linux__
1088
if(restore_loglevel){
1089
ret = klogctl(7, NULL, 0);
1090
if(ret == -1){
1091
perror("klogctl");
1092
}
1093
}
1094
#endif /* __linux__ */
1095
exitcode = EXIT_FAILURE;
1096
goto end;
1097
}
1098
if((network.ifr_flags & IFF_UP) == 0){
1099
network.ifr_flags |= IFF_UP;
1100
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1101
if(ret == -1){
1102
perror("ioctl SIOCSIFFLAGS");
1103
exitcode = EXIT_FAILURE;
1104
#ifdef __linux__
1105
if(restore_loglevel){
1106
ret = klogctl(7, NULL, 0);
1107
if(ret == -1){
1108
perror("klogctl");
901
1109
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
903
break;
904
case 130: /* --priority */
905
mc.priority = arg;
906
break;
907
case ARGP_KEY_ARG:
908
argp_usage(state);
909
case ARGP_KEY_END:
910
break;
911
default:
912
return ARGP_ERR_UNKNOWN;
913
1110
}
914
return 0;
915
}
916
917
struct argp argp = { .options = options, .parser = parse_opt,
918
.args_doc = "",
919
.doc = "Mandos client -- Get and decrypt"
920
" passwords from a Mandos server" };
921
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
922
if(ret == ARGP_ERR_UNKNOWN){
923
fprintf(stderr, "Unknown error while parsing arguments\n");
924
exitcode = EXIT_FAILURE;
1111
#endif /* __linux__ */
925
1112
goto end;
926
1113
}
927
1114
}
928
929
/* If the interface is down, bring it up */
930
{
931
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
932
if(sd < 0) {
933
perror("socket");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
strcpy(network.ifr_name, interface);
1115
/* sleep checking until interface is running */
1116
for(int i=0; i < delay * 4; i++){
938
1117
ret = ioctl(sd, SIOCGIFFLAGS, &network);
939
1118
if(ret == -1){
940
1119
perror("ioctl SIOCGIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
if((network.ifr_flags & IFF_UP) == 0){
945
network.ifr_flags |= IFF_UP;
946
ret = ioctl(sd, SIOCSIFFLAGS, &network);
947
if(ret == -1){
948
perror("ioctl SIOCSIFFLAGS");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
}
953
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1120
} else if(network.ifr_flags & IFF_RUNNING){
1121
break;
1122
}
1123
struct timespec sleeptime = { .tv_nsec = 250000000 };
1124
ret = nanosleep(&sleeptime, NULL);
1125
if(ret == -1 and errno != EINTR){
1126
perror("nanosleep");
1127
}
1128
}
1129
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1130
if(ret == -1){
1131
perror("close");
1132
}
1133
#ifdef __linux__
1134
if(restore_loglevel){
1135
/* Restores kernel loglevel to default */
1136
ret = klogctl(7, NULL, 0);
954
1137
if(ret == -1){
955
perror("close");
1138
perror("klogctl");
956
1139
}
957
1140
}
958
959
uid = getuid();
960
gid = getgid();
961
962
ret = setuid(uid);
963
if(ret == -1){
964
perror("setuid");
965
}
966
967
setgid(gid);
968
if(ret == -1){
969
perror("setgid");
970
}
971
972
ret = init_gnutls_global(&mc, pubkey, seckey);
973
if(ret == -1){
974
fprintf(stderr, "init_gnutls_global failed\n");
975
exitcode = EXIT_FAILURE;
976
goto end;
977
} else {
978
gnutls_initalized = true;
979
}
980
981
if(mkdtemp(tempdir) == NULL){
982
perror("mkdtemp");
983
tempdir[0] = '\0';
984
goto end;
985
}
986
987
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
988
fprintf(stderr, "gpgme_initalized failed\n");
989
exitcode = EXIT_FAILURE;
990
goto end;
991
} else {
992
gpgme_initalized = true;
993
}
994
1141
#endif /* __linux__ */
1142
}
1143
1144
uid = getuid();
1145
gid = getgid();
1146
1147
errno = 0;
1148
setgid(gid);
1149
if(ret == -1){
1150
perror("setgid");
1151
}
1152
1153
ret = setuid(uid);
1154
if(ret == -1){
1155
perror("setuid");
1156
}
1157
1158
ret = init_gnutls_global(pubkey, seckey);
1159
if(ret == -1){
1160
fprintf(stderr, "init_gnutls_global failed\n");
1161
exitcode = EXIT_FAILURE;
1162
goto end;
1163
} else {
1164
gnutls_initialized = true;
1165
}
1166
1167
if(mkdtemp(tempdir) == NULL){
1168
perror("mkdtemp");
1169
goto end;
1170
}
1171
tempdir_created = true;
1172
1173
if(not init_gpgme(pubkey, seckey, tempdir)){
1174
fprintf(stderr, "init_gpgme failed\n");
1175
exitcode = EXIT_FAILURE;
1176
goto end;
1177
} else {
1178
gpgme_initialized = true;
1179
}
1180
1181
if(interface[0] != '\0'){
995
1182
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
1183
if(if_index == 0){
997
1184
fprintf(stderr, "No such interface: \"%s\"\n", interface);
998
exit(EXIT_FAILURE);
999
}
1000
1001
if(connect_to != NULL){
1002
/* Connect directly, do not use Zeroconf */
1003
/* (Mainly meant for debugging) */
1004
char *address = strrchr(connect_to, ':');
1005
if(address == NULL){
1006
fprintf(stderr, "No colon in address\n");
1007
exitcode = EXIT_FAILURE;
1008
goto end;
1009
}
1010
uint16_t port;
1011
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1012
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1013
or address[numchars+1] != '\0'){
1014
fprintf(stderr, "Bad port number\n");
1015
exitcode = EXIT_FAILURE;
1016
goto end;
1017
}
1018
port = (uint16_t)tmpmax;
1019
*address = '\0';
1020
address = connect_to;
1021
ret = start_mandos_communication(address, port, if_index, &mc);
1022
if(ret < 0){
1023
exitcode = EXIT_FAILURE;
1024
} else {
1025
exitcode = EXIT_SUCCESS;
1026
}
1027
goto end;
1028
}
1029
1030
if(not debug){
1031
avahi_set_log_function(empty_log);
1032
}
1033
1034
/* Initialize the pseudo-RNG for Avahi */
1035
srand((unsigned int) time(NULL));
1036
1037
/* Allocate main Avahi loop object */
1038
mc.simple_poll = avahi_simple_poll_new();
1039
if(mc.simple_poll == NULL) {
1040
fprintf(stderr, "Avahi: Failed to create simple poll"
1041
" object.\n");
1042
exitcode = EXIT_FAILURE;
1043
goto end;
1044
}
1045
1046
{
1047
AvahiServerConfig config;
1048
/* Do not publish any local Zeroconf records */
1049
avahi_server_config_init(&config);
1050
config.publish_hinfo = 0;
1051
config.publish_addresses = 0;
1052
config.publish_workstation = 0;
1053
config.publish_domain = 0;
1054
1055
/* Allocate a new server */
1056
mc.server = avahi_server_new(avahi_simple_poll_get
1057
(mc.simple_poll), &config, NULL,
1058
NULL, &error);
1059
1060
/* Free the Avahi configuration data */
1061
avahi_server_config_free(&config);
1062
}
1063
1064
/* Check if creating the Avahi server object succeeded */
1065
if(mc.server == NULL) {
1066
fprintf(stderr, "Failed to create Avahi server: %s\n",
1067
avahi_strerror(error));
1068
exitcode = EXIT_FAILURE;
1069
goto end;
1070
}
1071
1072
/* Create the Avahi service browser */
1073
sb = avahi_s_service_browser_new(mc.server, if_index,
1074
AVAHI_PROTO_INET6,
1075
"_mandos._tcp", NULL, 0,
1076
browse_callback, &mc);
1077
if(sb == NULL) {
1078
fprintf(stderr, "Failed to create service browser: %s\n",
1079
avahi_strerror(avahi_server_errno(mc.server)));
1080
exitcode = EXIT_FAILURE;
1081
goto end;
1082
}
1083
1084
/* Run the main loop */
1085
1086
if(debug){
1087
fprintf(stderr, "Starting Avahi loop search\n");
1088
}
1089
1090
avahi_simple_poll_loop(mc.simple_poll);
1091
1185
exitcode = EXIT_FAILURE;
1186
goto end;
1187
}
1188
}
1189
1190
if(connect_to != NULL){
1191
/* Connect directly, do not use Zeroconf */
1192
/* (Mainly meant for debugging) */
1193
char *address = strrchr(connect_to, ':');
1194
if(address == NULL){
1195
fprintf(stderr, "No colon in address\n");
1196
exitcode = EXIT_FAILURE;
1197
goto end;
1198
}
1199
uint16_t port;
1200
errno = 0;
1201
tmpmax = strtoimax(address+1, &tmp, 10);
1202
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1203
or tmpmax != (uint16_t)tmpmax){
1204
fprintf(stderr, "Bad port number\n");
1205
exitcode = EXIT_FAILURE;
1206
goto end;
1207
}
1208
port = (uint16_t)tmpmax;
1209
*address = '\0';
1210
address = connect_to;
1211
/* Colon in address indicates IPv6 */
1212
int af;
1213
if(strchr(address, ':') != NULL){
1214
af = AF_INET6;
1215
} else {
1216
af = AF_INET;
1217
}
1218
ret = start_mandos_communication(address, port, if_index, af);
1219
if(ret < 0){
1220
exitcode = EXIT_FAILURE;
1221
} else {
1222
exitcode = EXIT_SUCCESS;
1223
}
1224
goto end;
1225
}
1226
1227
{
1228
AvahiServerConfig config;
1229
/* Do not publish any local Zeroconf records */
1230
avahi_server_config_init(&config);
1231
config.publish_hinfo = 0;
1232
config.publish_addresses = 0;
1233
config.publish_workstation = 0;
1234
config.publish_domain = 0;
1235
1236
/* Allocate a new server */
1237
mc.server = avahi_server_new(avahi_simple_poll_get
1238
(mc.simple_poll), &config, NULL,
1239
NULL, &error);
1240
1241
/* Free the Avahi configuration data */
1242
avahi_server_config_free(&config);
1243
}
1244
1245
/* Check if creating the Avahi server object succeeded */
1246
if(mc.server == NULL){
1247
fprintf(stderr, "Failed to create Avahi server: %s\n",
1248
avahi_strerror(error));
1249
exitcode = EXIT_FAILURE;
1250
goto end;
1251
}
1252
1253
/* Create the Avahi service browser */
1254
sb = avahi_s_service_browser_new(mc.server, if_index,
1255
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1256
NULL, 0, browse_callback, NULL);
1257
if(sb == NULL){
1258
fprintf(stderr, "Failed to create service browser: %s\n",
1259
avahi_strerror(avahi_server_errno(mc.server)));
1260
exitcode = EXIT_FAILURE;
1261
goto end;
1262
}
1263
1264
/* Run the main loop */
1265
1266
if(debug){
1267
fprintf(stderr, "Starting Avahi loop search\n");
1268
}
1269
1270
avahi_simple_poll_loop(mc.simple_poll);
1271
1092
1272
end:
1093
1094
if(debug){
1095
fprintf(stderr, "%s exiting\n", argv[0]);
1096
}
1097
1098
/* Cleanup things */
1099
if(sb != NULL)
1100
avahi_s_service_browser_free(sb);
1101
1102
if(mc.server != NULL)
1103
avahi_server_free(mc.server);
1104
1105
if(mc.simple_poll != NULL)
1106
avahi_simple_poll_free(mc.simple_poll);
1107
1108
if(gnutls_initalized){
1109
gnutls_certificate_free_credentials(mc.cred);
1110
gnutls_global_deinit();
1111
gnutls_dh_params_deinit(mc.dh_params);
1112
}
1113
1114
if(gpgme_initalized){
1115
gpgme_release(mc.ctx);
1116
}
1117
1118
/* Removes the temp directory used by GPGME */
1119
if(tempdir[0] != '\0'){
1120
DIR *d;
1121
struct dirent *direntry;
1122
d = opendir(tempdir);
1123
if(d == NULL){
1124
if(errno != ENOENT){
1125
perror("opendir");
1126
}
1127
} else {
1128
while(true){
1129
direntry = readdir(d);
1130
if(direntry == NULL){
1131
break;
1132
}
1133
if(direntry->d_type == DT_REG){
1134
char *fullname = NULL;
1135
ret = asprintf(&fullname, "%s/%s", tempdir,
1136
direntry->d_name);
1137
if(ret < 0){
1138
perror("asprintf");
1139
continue;
1140
}
1141
ret = unlink(fullname);
1142
if(ret == -1){
1143
fprintf(stderr, "unlink(\"%s\"): %s",
1144
fullname, strerror(errno));
1145
}
1146
free(fullname);
1147
}
1148
}
1149
closedir(d);
1150
}
1151
ret = rmdir(tempdir);
1152
if(ret == -1 and errno != ENOENT){
1153
perror("rmdir");
1154
}
1155
}
1156
1157
return exitcode;
1273
1274
if(debug){
1275
fprintf(stderr, "%s exiting\n", argv[0]);
1276
}
1277
1278
/* Cleanup things */
1279
if(sb != NULL)
1280
avahi_s_service_browser_free(sb);
1281
1282
if(mc.server != NULL)
1283
avahi_server_free(mc.server);
1284
1285
if(mc.simple_poll != NULL)
1286
avahi_simple_poll_free(mc.simple_poll);
1287
1288
if(gnutls_initialized){
1289
gnutls_certificate_free_credentials(mc.cred);
1290
gnutls_global_deinit();
1291
gnutls_dh_params_deinit(mc.dh_params);
1292
}
1293
1294
if(gpgme_initialized){
1295
gpgme_release(mc.ctx);
1296
}
1297
1298
/* Removes the temp directory used by GPGME */
1299
if(tempdir_created){
1300
DIR *d;
1301
struct dirent *direntry;
1302
d = opendir(tempdir);
1303
if(d == NULL){
1304
if(errno != ENOENT){
1305
perror("opendir");
1306
}
1307
} else {
1308
while(true){
1309
direntry = readdir(d);
1310
if(direntry == NULL){
1311
break;
1312
}
1313
/* Skip "." and ".." */
1314
if(direntry->d_name[0] == '.'
1315
and (direntry->d_name[1] == '\0'
1316
or (direntry->d_name[1] == '.'
1317
and direntry->d_name[2] == '\0'))){
1318
continue;
1319
}
1320
char *fullname = NULL;
1321
ret = asprintf(&fullname, "%s/%s", tempdir,
1322
direntry->d_name);
1323
if(ret < 0){
1324
perror("asprintf");
1325
continue;
1326
}
1327
ret = remove(fullname);
1328
if(ret == -1){
1329
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1330
strerror(errno));
1331
}
1332
free(fullname);
1333
}
1334
closedir(d);
1335
}
1336
ret = rmdir(tempdir);
1337
if(ret == -1 and errno != ENOENT){
1338
perror("rmdir");
1339
}
1340
}
1341
1342
return exitcode;
1158
1343
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0