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237.2.55
(compared to revision 24.1.135)
: plugins.d/mandos-client.c
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- Committer: Teddy Hogeborn
- Date: 2009-02-03 22:41:49 UTC
- mto: (24.1.131 mandos) (237.4.2 mandos-pipe-ipc) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: teddy@fukt.bsnet.se-20090203224149-fc1301jojmusbzlx
* Makefile (run-server): Use "--no-dbus" unconditionally.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
added
removed
plugins.d/mandos-client.c
42
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
44
srand() */
45
#include <stdbool.h> /* bool, false, true */
45
#include <stdbool.h> /* bool, true */
46
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/ioctl.h> /* ioctl */
49
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, uid_t, gid_t, open(),
52
opendir(), DIR */
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
53
54
#include <sys/stat.h> /* open() */
54
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
inet_pton(), connect() */
56
struct in6_addr, inet_pton(),
57
connect() */
56
58
#include <fcntl.h> /* open() */
57
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
58
60
*/
63
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
66
SIOCSIFFLAGS, if_indextoname(),
65
67
if_nametoindex(), IF_NAMESIZE */
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
68
*/
68
#include <netinet/in.h>
69
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
70
getuid(), getgid(), setuid(),
71
71
setgid() */
72
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, or, and */
73
#include <iso646.h> /* not, and, or */
74
74
#include <argp.h> /* struct argp_option, error_t, struct
75
75
argp_state, struct argp,
76
76
argp_parse(), ARGP_KEY_ARG,
77
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <signal.h> /* sigemptyset(), sigaddset(), sigaction(), SIGTERM, sigaction */
79
#ifdef __linux__
80
78
#include <sys/klog.h> /* klogctl() */
81
#endif
82
79
83
80
/* Avahi */
84
81
/* All Avahi types, constants and functions
130
127
gpgme_ctx_t ctx;
131
128
} mandos_context;
132
129
133
/* global context so signal handler can reach it*/
134
mandos_context mc = { .simple_poll = NULL, .server = NULL,
135
.dh_bits = 1024, .priority = "SECURE256"
136
":!CTYPE-X.509:+CTYPE-OPENPGP" };
137
138
130
/*
139
* Make additional room in "buffer" for at least BUFFER_SIZE
140
* additional bytes. "buffer_capacity" is how much is currently
141
* allocated, "buffer_length" is how much is already used.
131
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
132
* "buffer_capacity" is how much is currently allocated,
133
* "buffer_length" is how much is already used.
142
134
*/
143
size_t incbuffer(char **buffer, size_t buffer_length,
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
144
136
size_t buffer_capacity){
145
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
146
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
155
147
/*
156
148
* Initialize GPGME.
157
149
*/
158
static bool init_gpgme(const char *seckey,
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
159
151
const char *pubkey, const char *tempdir){
160
152
int ret;
161
153
gpgme_error_t rc;
182
174
return false;
183
175
}
184
176
185
rc = gpgme_op_import(mc.ctx, pgp_data);
177
rc = gpgme_op_import(mc->ctx, pgp_data);
186
178
if(rc != GPG_ERR_NO_ERROR){
187
179
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
188
180
gpgme_strsource(rc), gpgme_strerror(rc));
231
223
}
232
224
233
225
/* Create new GPGME "context" */
234
rc = gpgme_new(&(mc.ctx));
226
rc = gpgme_new(&(mc->ctx));
235
227
if(rc != GPG_ERR_NO_ERROR){
236
228
fprintf(stderr, "bad gpgme_new: %s: %s\n",
237
229
gpgme_strsource(rc), gpgme_strerror(rc));
249
241
* Decrypt OpenPGP data.
250
242
* Returns -1 on error
251
243
*/
252
static ssize_t pgp_packet_decrypt(const char *cryptotext,
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
253
246
size_t crypto_size,
254
247
char **plaintext){
255
248
gpgme_data_t dh_crypto, dh_plain;
282
275
283
276
/* Decrypt data from the cryptotext data buffer to the plaintext
284
277
data buffer */
285
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
286
279
if(rc != GPG_ERR_NO_ERROR){
287
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
288
281
gpgme_strsource(rc), gpgme_strerror(rc));
289
282
plaintext_length = -1;
290
283
if(debug){
291
284
gpgme_decrypt_result_t result;
292
result = gpgme_op_decrypt_result(mc.ctx);
285
result = gpgme_op_decrypt_result(mc->ctx);
293
286
if(result == NULL){
294
287
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
295
288
} else {
331
324
332
325
*plaintext = NULL;
333
326
while(true){
334
plaintext_capacity = incbuffer(plaintext,
327
plaintext_capacity = adjustbuffer(plaintext,
335
328
(size_t)plaintext_length,
336
329
plaintext_capacity);
337
330
if(plaintext_capacity == 0){
338
perror("incbuffer");
331
perror("adjustbuffer");
339
332
plaintext_length = -1;
340
333
goto decrypt_end;
341
334
}
373
366
return plaintext_length;
374
367
}
375
368
376
static const char * safer_gnutls_strerror(int value){
369
static const char * safer_gnutls_strerror(int value) {
377
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
378
371
-Wunreachable-code */
379
372
if(ret == NULL)
387
380
fprintf(stderr, "GnuTLS: %s", string);
388
381
}
389
382
390
static int init_gnutls_global(const char *pubkeyfilename,
383
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
391
385
const char *seckeyfilename){
392
386
int ret;
393
387
396
390
}
397
391
398
392
ret = gnutls_global_init();
399
if(ret != GNUTLS_E_SUCCESS){
393
if(ret != GNUTLS_E_SUCCESS) {
400
394
fprintf(stderr, "GnuTLS global_init: %s\n",
401
395
safer_gnutls_strerror(ret));
402
396
return -1;
411
405
}
412
406
413
407
/* OpenPGP credentials */
414
gnutls_certificate_allocate_credentials(&mc.cred);
408
gnutls_certificate_allocate_credentials(&mc->cred);
415
409
if(ret != GNUTLS_E_SUCCESS){
416
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
417
from
418
-Wunreachable-code
419
*/
411
* from
412
* -Wunreachable-code
413
*/
420
414
safer_gnutls_strerror(ret));
421
415
gnutls_global_deinit();
422
416
return -1;
429
423
}
430
424
431
425
ret = gnutls_certificate_set_openpgp_key_file
432
(mc.cred, pubkeyfilename, seckeyfilename,
426
(mc->cred, pubkeyfilename, seckeyfilename,
433
427
GNUTLS_OPENPGP_FMT_BASE64);
434
if(ret != GNUTLS_E_SUCCESS){
428
if(ret != GNUTLS_E_SUCCESS) {
435
429
fprintf(stderr,
436
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
437
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
441
435
}
442
436
443
437
/* GnuTLS server initialization */
444
ret = gnutls_dh_params_init(&mc.dh_params);
445
if(ret != GNUTLS_E_SUCCESS){
438
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
446
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
447
441
" %s\n", safer_gnutls_strerror(ret));
448
442
goto globalfail;
449
443
}
450
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
451
if(ret != GNUTLS_E_SUCCESS){
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
452
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
453
447
safer_gnutls_strerror(ret));
454
448
goto globalfail;
455
449
}
456
450
457
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
458
452
459
453
return 0;
460
454
461
455
globalfail:
462
456
463
gnutls_certificate_free_credentials(mc.cred);
457
gnutls_certificate_free_credentials(mc->cred);
464
458
gnutls_global_deinit();
465
gnutls_dh_params_deinit(mc.dh_params);
459
gnutls_dh_params_deinit(mc->dh_params);
466
460
return -1;
467
461
}
468
462
469
static int init_gnutls_session(gnutls_session_t *session){
463
static int init_gnutls_session(mandos_context *mc,
464
gnutls_session_t *session){
470
465
int ret;
471
466
/* GnuTLS session creation */
472
467
ret = gnutls_init(session, GNUTLS_SERVER);
477
472
478
473
{
479
474
const char *err;
480
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
481
if(ret != GNUTLS_E_SUCCESS){
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
482
477
fprintf(stderr, "Syntax error at: %s\n", err);
483
478
fprintf(stderr, "GnuTLS error: %s\n",
484
479
safer_gnutls_strerror(ret));
488
483
}
489
484
490
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
491
mc.cred);
492
if(ret != GNUTLS_E_SUCCESS){
486
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
493
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
494
489
safer_gnutls_strerror(ret));
495
490
gnutls_deinit(*session);
500
495
gnutls_certificate_server_set_request(*session,
501
496
GNUTLS_CERT_IGNORE);
502
497
503
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
504
499
505
500
return 0;
506
501
}
512
507
/* Called when a Mandos server is found */
513
508
static int start_mandos_communication(const char *ip, uint16_t port,
514
509
AvahiIfIndex if_index,
515
int af){
510
mandos_context *mc){
516
511
int ret, tcp_sd;
517
512
ssize_t sret;
518
union {
519
struct sockaddr_in in;
520
struct sockaddr_in6 in6;
521
} to;
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
522
514
char *buffer = NULL;
523
515
char *decrypted_buffer;
524
516
size_t buffer_length = 0;
526
518
ssize_t decrypted_buffer_size;
527
519
size_t written;
528
520
int retval = 0;
521
char interface[IF_NAMESIZE];
529
522
gnutls_session_t session;
530
int pf; /* Protocol family */
531
532
switch(af){
533
case AF_INET6:
534
pf = PF_INET6;
535
break;
536
case AF_INET:
537
pf = PF_INET;
538
break;
539
default:
540
fprintf(stderr, "Bad address family: %d\n", af);
541
return -1;
542
}
543
544
ret = init_gnutls_session(&session);
523
524
ret = init_gnutls_session(mc, &session);
545
525
if(ret != 0){
546
526
return -1;
547
527
}
548
528
549
529
if(debug){
550
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
551
531
"\n", ip, port);
552
532
}
553
533
554
tcp_sd = socket(pf, SOCK_STREAM, 0);
555
if(tcp_sd < 0){
534
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
if(tcp_sd < 0) {
556
536
perror("socket");
557
537
return -1;
558
538
}
559
539
540
if(debug){
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
542
perror("if_indextoname");
543
return -1;
544
}
545
fprintf(stderr, "Binding to interface %s\n", interface);
546
}
547
560
548
memset(&to, 0, sizeof(to));
561
if(af == AF_INET6){
562
to.in6.sin6_family = (uint16_t)af;
563
ret = inet_pton(af, ip, &to.in6.sin6_addr);
564
} else { /* IPv4 */
565
to.in.sin_family = (sa_family_t)af;
566
ret = inet_pton(af, ip, &to.in.sin_addr);
567
}
549
to.in6.sin6_family = AF_INET6;
550
/* It would be nice to have a way to detect if we were passed an
551
IPv4 address here. Now we assume an IPv6 address. */
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
568
553
if(ret < 0 ){
569
554
perror("inet_pton");
570
555
return -1;
573
558
fprintf(stderr, "Bad address: %s\n", ip);
574
559
return -1;
575
560
}
576
if(af == AF_INET6){
577
to.in6.sin6_port = htons(port); /* Spurious warnings from
578
-Wconversion and
579
-Wunreachable-code */
580
581
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
582
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
583
-Wunreachable-code*/
584
if(if_index == AVAHI_IF_UNSPEC){
585
fprintf(stderr, "An IPv6 link-local address is incomplete"
586
" without a network interface\n");
587
return -1;
588
}
589
/* Set the network interface number as scope */
590
to.in6.sin6_scope_id = (uint32_t)if_index;
591
}
592
} else {
593
to.in.sin_port = htons(port); /* Spurious warnings from
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
594
562
-Wconversion and
595
563
-Wunreachable-code */
596
}
564
565
to.in6.sin6_scope_id = (uint32_t)if_index;
597
566
598
567
if(debug){
599
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
600
char interface[IF_NAMESIZE];
601
if(if_indextoname((unsigned int)if_index, interface) == NULL){
602
perror("if_indextoname");
603
} else {
604
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
605
ip, interface, port);
606
}
607
} else {
608
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
609
port);
610
}
611
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
612
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
613
const char *pcret;
614
if(af == AF_INET6){
615
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
616
sizeof(addrstr));
617
} else {
618
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
619
sizeof(addrstr));
620
}
621
if(pcret == NULL){
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
570
char addrstr[INET6_ADDRSTRLEN] = "";
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
572
sizeof(addrstr)) == NULL){
622
573
perror("inet_ntop");
623
574
} else {
624
575
if(strcmp(addrstr, ip) != 0){
627
578
}
628
579
}
629
580
630
if(af == AF_INET6){
631
ret = connect(tcp_sd, &to.in6, sizeof(to));
632
} else {
633
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
634
}
581
ret = connect(tcp_sd, &to.in, sizeof(to));
635
582
if(ret < 0){
636
583
perror("connect");
637
584
return -1;
683
630
/* Read OpenPGP packet that contains the wanted password */
684
631
685
632
if(debug){
686
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
687
634
ip);
688
635
}
689
636
690
637
while(true){
691
buffer_capacity = incbuffer(&buffer, buffer_length,
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
692
639
buffer_capacity);
693
640
if(buffer_capacity == 0){
694
perror("incbuffer");
641
perror("adjustbuffer");
695
642
retval = -1;
696
643
goto mandos_end;
697
644
}
736
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
737
684
738
685
if(buffer_length > 0){
739
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
740
687
buffer_length,
741
688
&decrypted_buffer);
742
689
if(decrypted_buffer_size >= 0){
777
724
778
725
static void resolve_callback(AvahiSServiceResolver *r,
779
726
AvahiIfIndex interface,
780
AvahiProtocol proto,
727
AVAHI_GCC_UNUSED AvahiProtocol protocol,
781
728
AvahiResolverEvent event,
782
729
const char *name,
783
730
const char *type,
788
735
AVAHI_GCC_UNUSED AvahiStringList *txt,
789
736
AVAHI_GCC_UNUSED AvahiLookupResultFlags
790
737
flags,
791
__attribute__((unused)) void* userdata){
738
void* userdata) {
739
mandos_context *mc = userdata;
792
740
assert(r);
793
741
794
742
/* Called whenever a service has been resolved successfully or
795
743
timed out */
796
744
797
switch(event){
745
switch(event) {
798
746
default:
799
747
case AVAHI_RESOLVER_FAILURE:
800
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
801
749
" of type '%s' in domain '%s': %s\n", name, type, domain,
802
avahi_strerror(avahi_server_errno(mc.server)));
750
avahi_strerror(avahi_server_errno(mc->server)));
803
751
break;
804
752
805
753
case AVAHI_RESOLVER_FOUND:
811
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
812
760
ip, (intmax_t)interface, port);
813
761
}
814
int ret = start_mandos_communication(ip, port, interface,
815
avahi_proto_to_af(proto));
762
int ret = start_mandos_communication(ip, port, interface, mc);
816
763
if(ret == 0){
817
avahi_simple_poll_quit(mc.simple_poll);
764
avahi_simple_poll_quit(mc->simple_poll);
818
765
}
819
766
}
820
767
}
821
768
avahi_s_service_resolver_free(r);
822
769
}
823
770
824
static void browse_callback(AvahiSServiceBrowser *b,
825
AvahiIfIndex interface,
826
AvahiProtocol protocol,
827
AvahiBrowserEvent event,
828
const char *name,
829
const char *type,
830
const char *domain,
831
AVAHI_GCC_UNUSED AvahiLookupResultFlags
832
flags,
833
__attribute__((unused)) void* userdata){
771
static void browse_callback( AvahiSServiceBrowser *b,
772
AvahiIfIndex interface,
773
AvahiProtocol protocol,
774
AvahiBrowserEvent event,
775
const char *name,
776
const char *type,
777
const char *domain,
778
AVAHI_GCC_UNUSED AvahiLookupResultFlags
779
flags,
780
void* userdata) {
781
mandos_context *mc = userdata;
834
782
assert(b);
835
783
836
784
/* Called whenever a new services becomes available on the LAN or
837
785
is removed from the LAN */
838
786
839
switch(event){
787
switch(event) {
840
788
default:
841
789
case AVAHI_BROWSER_FAILURE:
842
790
843
791
fprintf(stderr, "(Avahi browser) %s\n",
844
avahi_strerror(avahi_server_errno(mc.server)));
845
avahi_simple_poll_quit(mc.simple_poll);
792
avahi_strerror(avahi_server_errno(mc->server)));
793
avahi_simple_poll_quit(mc->simple_poll);
846
794
return;
847
795
848
796
case AVAHI_BROWSER_NEW:
851
799
the callback function is called the Avahi server will free the
852
800
resolver for us. */
853
801
854
if(!(avahi_s_service_resolver_new(mc.server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
855
803
protocol, name, type, domain,
856
804
AVAHI_PROTO_INET6, 0,
857
resolve_callback, NULL)))
805
resolve_callback, mc)))
858
806
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
859
name, avahi_strerror(avahi_server_errno(mc.server)));
807
name, avahi_strerror(avahi_server_errno(mc->server)));
860
808
break;
861
809
862
810
case AVAHI_BROWSER_REMOVE:
871
819
}
872
820
}
873
821
874
/* stop main loop after sigterm has been called */
875
static void handle_sigterm(__attribute__((unused)) int sig){
876
int old_errno = errno;
877
avahi_simple_poll_quit(mc.simple_poll);
878
errno = old_errno;
879
}
880
881
822
int main(int argc, char *argv[]){
882
AvahiSServiceBrowser *sb = NULL;
883
int error;
884
int ret;
885
intmax_t tmpmax;
886
int numchars;
887
int exitcode = EXIT_SUCCESS;
888
const char *interface = "eth0";
889
struct ifreq network;
890
int sd;
891
uid_t uid;
892
gid_t gid;
893
char *connect_to = NULL;
894
char tempdir[] = "/tmp/mandosXXXXXX";
895
bool tempdir_created = false;
896
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
897
const char *seckey = PATHDIR "/" SECKEY;
898
const char *pubkey = PATHDIR "/" PUBKEY;
899
900
bool gnutls_initialized = false;
901
bool gpgme_initialized = false;
902
double delay = 2.5;
903
904
struct sigaction old_sigterm_action;
905
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
906
907
{
908
struct argp_option options[] = {
909
{ .name = "debug", .key = 128,
910
.doc = "Debug mode", .group = 3 },
911
{ .name = "connect", .key = 'c',
912
.arg = "ADDRESS:PORT",
913
.doc = "Connect directly to a specific Mandos server",
914
.group = 1 },
915
{ .name = "interface", .key = 'i',
916
.arg = "NAME",
917
.doc = "Network interface that will be used to search for"
918
" Mandos servers",
919
.group = 1 },
920
{ .name = "seckey", .key = 's',
921
.arg = "FILE",
922
.doc = "OpenPGP secret key file base name",
923
.group = 1 },
924
{ .name = "pubkey", .key = 'p',
925
.arg = "FILE",
926
.doc = "OpenPGP public key file base name",
927
.group = 2 },
928
{ .name = "dh-bits", .key = 129,
929
.arg = "BITS",
930
.doc = "Bit length of the prime number used in the"
931
" Diffie-Hellman key exchange",
932
.group = 2 },
933
{ .name = "priority", .key = 130,
934
.arg = "STRING",
935
.doc = "GnuTLS priority string for the TLS handshake",
936
.group = 1 },
937
{ .name = "delay", .key = 131,
938
.arg = "SECONDS",
939
.doc = "Maximum delay to wait for interface startup",
940
.group = 2 },
941
{ .name = NULL }
942
};
943
944
error_t parse_opt(int key, char *arg,
945
struct argp_state *state){
946
switch(key){
947
case 128: /* --debug */
948
debug = true;
949
break;
950
case 'c': /* --connect */
951
connect_to = arg;
952
break;
953
case 'i': /* --interface */
954
interface = arg;
955
break;
956
case 's': /* --seckey */
957
seckey = arg;
958
break;
959
case 'p': /* --pubkey */
960
pubkey = arg;
961
break;
962
case 129: /* --dh-bits */
963
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
964
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
965
or arg[numchars] != '\0'){
966
fprintf(stderr, "Bad number of DH bits\n");
967
exit(EXIT_FAILURE);
968
}
969
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
970
break;
971
case 130: /* --priority */
972
mc.priority = arg;
973
break;
974
case 131: /* --delay */
975
ret = sscanf(arg, "%lf%n", &delay, &numchars);
976
if(ret < 1 or arg[numchars] != '\0'){
977
fprintf(stderr, "Bad delay\n");
978
exit(EXIT_FAILURE);
979
}
980
break;
981
case ARGP_KEY_ARG:
982
argp_usage(state);
983
case ARGP_KEY_END:
984
break;
985
default:
986
return ARGP_ERR_UNKNOWN;
987
}
988
return 0;
989
}
990
991
struct argp argp = { .options = options, .parser = parse_opt,
992
.args_doc = "",
993
.doc = "Mandos client -- Get and decrypt"
994
" passwords from a Mandos server" };
995
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
996
if(ret == ARGP_ERR_UNKNOWN){
997
fprintf(stderr, "Unknown error while parsing arguments\n");
998
exitcode = EXIT_FAILURE;
999
goto end;
1000
}
1001
}
1002
1003
if(not debug){
1004
avahi_set_log_function(empty_log);
1005
}
1006
1007
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1008
from the signal handler */
1009
/* Initialize the pseudo-RNG for Avahi */
1010
srand((unsigned int) time(NULL));
1011
mc.simple_poll = avahi_simple_poll_new();
1012
if(mc.simple_poll == NULL){
1013
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1014
exitcode = EXIT_FAILURE;
1015
goto end;
1016
}
1017
1018
sigemptyset(&sigterm_action.sa_mask);
1019
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1020
if(ret == -1){
1021
perror("sigaddset");
1022
exitcode = EXIT_FAILURE;
1023
goto end;
1024
}
1025
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1026
if(ret == -1){
1027
perror("sigaction");
1028
exitcode = EXIT_FAILURE;
1029
goto end;
1030
}
1031
1032
1033
/* If the interface is down, bring it up */
1034
if(interface[0] != '\0'){
1035
#ifdef __linux__
1036
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1037
messages to mess up the prompt */
1038
ret = klogctl(8, NULL, 5);
1039
bool restore_loglevel = true;
1040
if(ret == -1){
1041
restore_loglevel = false;
1042
perror("klogctl");
1043
}
1044
#endif
1045
1046
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1047
if(sd < 0){
1048
perror("socket");
1049
exitcode = EXIT_FAILURE;
1050
#ifdef __linux__
1051
if(restore_loglevel){
1052
ret = klogctl(7, NULL, 0);
1053
if(ret == -1){
1054
perror("klogctl");
1055
}
1056
}
1057
#endif
1058
goto end;
1059
}
1060
strcpy(network.ifr_name, interface);
1061
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1062
if(ret == -1){
1063
perror("ioctl SIOCGIFFLAGS");
1064
#ifdef __linux__
1065
if(restore_loglevel){
1066
ret = klogctl(7, NULL, 0);
1067
if(ret == -1){
1068
perror("klogctl");
1069
}
1070
}
1071
#endif
1072
exitcode = EXIT_FAILURE;
1073
goto end;
1074
}
1075
if((network.ifr_flags & IFF_UP) == 0){
1076
network.ifr_flags |= IFF_UP;
1077
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1078
if(ret == -1){
1079
perror("ioctl SIOCSIFFLAGS");
1080
exitcode = EXIT_FAILURE;
1081
#ifdef __linux__
1082
if(restore_loglevel){
823
AvahiSServiceBrowser *sb = NULL;
824
int error;
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
int exitcode = EXIT_SUCCESS;
829
const char *interface = "eth0";
830
struct ifreq network;
831
int sd;
832
uid_t uid;
833
gid_t gid;
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
842
.dh_bits = 1024, .priority = "SECURE256"
843
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
847
848
{
849
struct argp_option options[] = {
850
{ .name = "debug", .key = 128,
851
.doc = "Debug mode", .group = 3 },
852
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
855
.group = 1 },
856
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
860
.group = 1 },
861
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
864
.group = 1 },
865
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
868
.group = 2 },
869
{ .name = "dh-bits", .key = 129,
870
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
873
.group = 2 },
874
{ .name = "priority", .key = 130,
875
.arg = "STRING",
876
.doc = "GnuTLS priority string for the TLS handshake",
877
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
882
{ .name = NULL }
883
};
884
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
889
debug = true;
890
break;
891
case 'c': /* --connect */
892
connect_to = arg;
893
break;
894
case 'i': /* --interface */
895
interface = arg;
896
break;
897
case 's': /* --seckey */
898
seckey = arg;
899
break;
900
case 'p': /* --pubkey */
901
pubkey = arg;
902
break;
903
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
908
exit(EXIT_FAILURE);
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
break;
912
case 130: /* --priority */
913
mc.priority = arg;
914
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
922
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
925
break;
926
default:
927
return ARGP_ERR_UNKNOWN;
928
}
929
return 0;
930
}
931
932
struct argp argp = { .options = options, .parser = parse_opt,
933
.args_doc = "",
934
.doc = "Mandos client -- Get and decrypt"
935
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
938
fprintf(stderr, "Unknown error while parsing arguments\n");
939
exitcode = EXIT_FAILURE;
940
goto end;
941
}
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
952
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
if(sd < 0) {
955
perror("socket");
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
goto end;
962
}
963
strcpy(network.ifr_name, interface);
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
if(ret == -1){
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
exitcode = EXIT_FAILURE;
972
goto end;
973
}
974
if((network.ifr_flags & IFF_UP) == 0){
975
network.ifr_flags |= IFF_UP;
976
ret = ioctl(sd, SIOCSIFFLAGS, &network);
977
if(ret == -1){
978
perror("ioctl SIOCSIFFLAGS");
979
exitcode = EXIT_FAILURE;
1083
980
ret = klogctl(7, NULL, 0);
1084
981
if(ret == -1){
1085
982
perror("klogctl");
1086
983
}
1087
}
1088
#endif
1089
goto end;
1090
}
1091
}
1092
/* sleep checking until interface is running */
1093
for(int i=0; i < delay * 4; i++){
1094
ret = ioctl(sd, SIOCGIFFLAGS, &network);
984
goto end;
985
}
986
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1095
999
if(ret == -1){
1096
perror("ioctl SIOCGIFFLAGS");
1097
} else if(network.ifr_flags & IFF_RUNNING){
1098
break;
1099
}
1100
struct timespec sleeptime = { .tv_nsec = 250000000 };
1101
ret = nanosleep(&sleeptime, NULL);
1102
if(ret == -1 and errno != EINTR){
1103
perror("nanosleep");
1104
}
1105
}
1106
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1107
if(ret == -1){
1108
perror("close");
1109
}
1110
#ifdef __linux__
1111
if(restore_loglevel){
1000
perror("close");
1001
}
1112
1002
/* Restores kernel loglevel to default */
1113
1003
ret = klogctl(7, NULL, 0);
1114
1004
if(ret == -1){
1115
1005
perror("klogctl");
1116
1006
}
1117
1007
}
1118
#endif
1119
}
1120
1121
uid = getuid();
1122
gid = getgid();
1123
1124
errno = 0;
1125
setgid(gid);
1126
if(ret == -1){
1127
perror("setgid");
1128
}
1129
1130
ret = setuid(uid);
1131
if(ret == -1){
1132
perror("setuid");
1133
}
1134
1135
ret = init_gnutls_global(pubkey, seckey);
1136
if(ret == -1){
1137
fprintf(stderr, "init_gnutls_global failed\n");
1138
exitcode = EXIT_FAILURE;
1139
goto end;
1140
} else {
1141
gnutls_initialized = true;
1142
}
1143
1144
if(mkdtemp(tempdir) == NULL){
1145
perror("mkdtemp");
1146
goto end;
1147
}
1148
tempdir_created = true;
1149
1150
if(not init_gpgme(pubkey, seckey, tempdir)){
1151
fprintf(stderr, "init_gpgme failed\n");
1152
exitcode = EXIT_FAILURE;
1153
goto end;
1154
} else {
1155
gpgme_initialized = true;
1156
}
1157
1158
if(interface[0] != '\0'){
1008
1009
uid = getuid();
1010
gid = getgid();
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
1022
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
1024
fprintf(stderr, "init_gnutls_global failed\n");
1025
exitcode = EXIT_FAILURE;
1026
goto end;
1027
} else {
1028
gnutls_initialized = true;
1029
}
1030
1031
if(mkdtemp(tempdir) == NULL){
1032
perror("mkdtemp");
1033
goto end;
1034
}
1035
tempdir_created = true;
1036
1037
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
} else {
1042
gpgme_initialized = true;
1043
}
1044
1159
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
1160
1046
if(if_index == 0){
1161
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1162
1048
exitcode = EXIT_FAILURE;
1163
1049
goto end;
1164
1050
}
1165
}
1166
1167
if(connect_to != NULL){
1168
/* Connect directly, do not use Zeroconf */
1169
/* (Mainly meant for debugging) */
1170
char *address = strrchr(connect_to, ':');
1171
if(address == NULL){
1172
fprintf(stderr, "No colon in address\n");
1173
exitcode = EXIT_FAILURE;
1174
goto end;
1175
}
1176
uint16_t port;
1177
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1178
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1179
or address[numchars+1] != '\0'){
1180
fprintf(stderr, "Bad port number\n");
1181
exitcode = EXIT_FAILURE;
1182
goto end;
1183
}
1184
port = (uint16_t)tmpmax;
1185
*address = '\0';
1186
address = connect_to;
1187
/* Colon in address indicates IPv6 */
1188
int af;
1189
if(strchr(address, ':') != NULL){
1190
af = AF_INET6;
1191
} else {
1192
af = AF_INET;
1193
}
1194
ret = start_mandos_communication(address, port, if_index,
1195
af);
1196
if(ret < 0){
1197
exitcode = EXIT_FAILURE;
1198
} else {
1199
exitcode = EXIT_SUCCESS;
1200
}
1201
goto end;
1202
}
1203
1204
{
1205
AvahiServerConfig config;
1206
/* Do not publish any local Zeroconf records */
1207
avahi_server_config_init(&config);
1208
config.publish_hinfo = 0;
1209
config.publish_addresses = 0;
1210
config.publish_workstation = 0;
1211
config.publish_domain = 0;
1212
1213
/* Allocate a new server */
1214
mc.server = avahi_server_new(avahi_simple_poll_get
1215
(mc.simple_poll), &config, NULL,
1216
NULL, &error);
1217
1218
/* Free the Avahi configuration data */
1219
avahi_server_config_free(&config);
1220
}
1221
1222
/* Check if creating the Avahi server object succeeded */
1223
if(mc.server == NULL){
1224
fprintf(stderr, "Failed to create Avahi server: %s\n",
1225
avahi_strerror(error));
1226
exitcode = EXIT_FAILURE;
1227
goto end;
1228
}
1229
1230
/* Create the Avahi service browser */
1231
sb = avahi_s_service_browser_new(mc.server, if_index,
1232
AVAHI_PROTO_INET6, "_mandos._tcp",
1233
NULL, 0, browse_callback, NULL);
1234
if(sb == NULL){
1235
fprintf(stderr, "Failed to create service browser: %s\n",
1236
avahi_strerror(avahi_server_errno(mc.server)));
1237
exitcode = EXIT_FAILURE;
1238
goto end;
1239
}
1240
1241
/* Run the main loop */
1242
1243
if(debug){
1244
fprintf(stderr, "Starting Avahi loop search\n");
1245
}
1246
1247
avahi_simple_poll_loop(mc.simple_poll);
1248
1051
1052
if(connect_to != NULL){
1053
/* Connect directly, do not use Zeroconf */
1054
/* (Mainly meant for debugging) */
1055
char *address = strrchr(connect_to, ':');
1056
if(address == NULL){
1057
fprintf(stderr, "No colon in address\n");
1058
exitcode = EXIT_FAILURE;
1059
goto end;
1060
}
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
1066
exitcode = EXIT_FAILURE;
1067
goto end;
1068
}
1069
port = (uint16_t)tmpmax;
1070
*address = '\0';
1071
address = connect_to;
1072
ret = start_mandos_communication(address, port, if_index, &mc);
1073
if(ret < 0){
1074
exitcode = EXIT_FAILURE;
1075
} else {
1076
exitcode = EXIT_SUCCESS;
1077
}
1078
goto end;
1079
}
1080
1081
if(not debug){
1082
avahi_set_log_function(empty_log);
1083
}
1084
1085
/* Initialize the pseudo-RNG for Avahi */
1086
srand((unsigned int) time(NULL));
1087
1088
/* Allocate main Avahi loop object */
1089
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
" object.\n");
1093
exitcode = EXIT_FAILURE;
1094
goto end;
1095
}
1096
1097
{
1098
AvahiServerConfig config;
1099
/* Do not publish any local Zeroconf records */
1100
avahi_server_config_init(&config);
1101
config.publish_hinfo = 0;
1102
config.publish_addresses = 0;
1103
config.publish_workstation = 0;
1104
config.publish_domain = 0;
1105
1106
/* Allocate a new server */
1107
mc.server = avahi_server_new(avahi_simple_poll_get
1108
(mc.simple_poll), &config, NULL,
1109
NULL, &error);
1110
1111
/* Free the Avahi configuration data */
1112
avahi_server_config_free(&config);
1113
}
1114
1115
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
avahi_strerror(error));
1119
exitcode = EXIT_FAILURE;
1120
goto end;
1121
}
1122
1123
/* Create the Avahi service browser */
1124
sb = avahi_s_service_browser_new(mc.server, if_index,
1125
AVAHI_PROTO_INET6,
1126
"_mandos._tcp", NULL, 0,
1127
browse_callback, &mc);
1128
if(sb == NULL) {
1129
fprintf(stderr, "Failed to create service browser: %s\n",
1130
avahi_strerror(avahi_server_errno(mc.server)));
1131
exitcode = EXIT_FAILURE;
1132
goto end;
1133
}
1134
1135
/* Run the main loop */
1136
1137
if(debug){
1138
fprintf(stderr, "Starting Avahi loop search\n");
1139
}
1140
1141
avahi_simple_poll_loop(mc.simple_poll);
1142
1249
1143
end:
1250
1251
if(debug){
1252
fprintf(stderr, "%s exiting\n", argv[0]);
1253
}
1254
1255
/* Cleanup things */
1256
if(sb != NULL)
1257
avahi_s_service_browser_free(sb);
1258
1259
if(mc.server != NULL)
1260
avahi_server_free(mc.server);
1261
1262
if(mc.simple_poll != NULL)
1263
avahi_simple_poll_free(mc.simple_poll);
1264
1265
if(gnutls_initialized){
1266
gnutls_certificate_free_credentials(mc.cred);
1267
gnutls_global_deinit();
1268
gnutls_dh_params_deinit(mc.dh_params);
1269
}
1270
1271
if(gpgme_initialized){
1272
gpgme_release(mc.ctx);
1273
}
1274
1275
/* Removes the temp directory used by GPGME */
1276
if(tempdir_created){
1277
DIR *d;
1278
struct dirent *direntry;
1279
d = opendir(tempdir);
1280
if(d == NULL){
1281
if(errno != ENOENT){
1282
perror("opendir");
1283
}
1284
} else {
1285
while(true){
1286
direntry = readdir(d);
1287
if(direntry == NULL){
1288
break;
1289
}
1290
/* Skip "." and ".." */
1291
if(direntry->d_name[0] == '.'
1292
and (direntry->d_name[1] == '\0'
1293
or (direntry->d_name[1] == '.'
1294
and direntry->d_name[2] == '\0'))){
1295
continue;
1296
}
1297
char *fullname = NULL;
1298
ret = asprintf(&fullname, "%s/%s", tempdir,
1299
direntry->d_name);
1300
if(ret < 0){
1301
perror("asprintf");
1302
continue;
1303
}
1304
ret = remove(fullname);
1305
if(ret == -1){
1306
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1307
strerror(errno));
1308
}
1309
free(fullname);
1310
}
1311
closedir(d);
1312
}
1313
ret = rmdir(tempdir);
1314
if(ret == -1 and errno != ENOENT){
1315
perror("rmdir");
1316
}
1317
}
1318
1319
return exitcode;
1144
1145
if(debug){
1146
fprintf(stderr, "%s exiting\n", argv[0]);
1147
}
1148
1149
/* Cleanup things */
1150
if(sb != NULL)
1151
avahi_s_service_browser_free(sb);
1152
1153
if(mc.server != NULL)
1154
avahi_server_free(mc.server);
1155
1156
if(mc.simple_poll != NULL)
1157
avahi_simple_poll_free(mc.simple_poll);
1158
1159
if(gnutls_initialized){
1160
gnutls_certificate_free_credentials(mc.cred);
1161
gnutls_global_deinit();
1162
gnutls_dh_params_deinit(mc.dh_params);
1163
}
1164
1165
if(gpgme_initialized){
1166
gpgme_release(mc.ctx);
1167
}
1168
1169
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1171
DIR *d;
1172
struct dirent *direntry;
1173
d = opendir(tempdir);
1174
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1178
} else {
1179
while(true){
1180
direntry = readdir(d);
1181
if(direntry == NULL){
1182
break;
1183
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1204
}
1205
closedir(d);
1206
}
1207
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1209
perror("rmdir");
1210
}
1211
}
1212
1213
return exitcode;
1320
1214
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0