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24.1.127
(compared to revision 237.2.78)
: plugins.d/mandos-client.c
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- Committer: Björn Påhlsson
- Date: 2009-01-19 05:59:35 UTC
- mfrom: (237.2.41 mandos)
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: belorn@braxen-20090119055935-0ce8dnr4hvz5m5v2
merge
- 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(), remove() */
39
stdout, ferror(), sscanf */
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(), strtof() */
44
#include <stdbool.h> /* bool, false, true */
43
srand() */
44
#include <stdbool.h> /* bool, 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, uid_t, gid_t, open(),
51
opendir(), DIR */
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(),
52
DIR */
52
53
#include <sys/stat.h> /* open() */
53
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
inet_pton(), connect() */
55
struct in6_addr, inet_pton(),
56
connect() */
55
57
#include <fcntl.h> /* open() */
56
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
57
59
*/
58
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
59
strtoimax() */
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
60
61
#include <assert.h> /* assert() */
61
62
#include <errno.h> /* perror(), errno */
62
#include <time.h> /* nanosleep(), time() */
63
#include <time.h> /* time(), nanosleep() */
63
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
65
SIOCSIFFLAGS, if_indextoname(),
65
66
if_nametoindex(), IF_NAMESIZE */
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
68
*/
67
#include <netinet/in.h>
69
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
69
getuid(), getgid(), setuid(),
71
70
setgid() */
72
71
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, or, and */
72
#include <iso646.h> /* not, and, or */
74
73
#include <argp.h> /* struct argp_option, error_t, struct
75
74
argp_state, struct argp,
76
75
argp_parse(), ARGP_KEY_ARG,
77
76
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
77
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
85
78
86
79
/* Avahi */
87
80
/* All Avahi types, constants and functions
133
126
gpgme_ctx_t ctx;
134
127
} mandos_context;
135
128
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
141
129
/*
142
* Make additional room in "buffer" for at least BUFFER_SIZE more
143
* bytes. "buffer_capacity" is how much is currently allocated,
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "buffer_capacity" is how much is currently allocated,
144
132
* "buffer_length" is how much is already used.
145
133
*/
146
size_t incbuffer(char **buffer, size_t buffer_length,
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
147
135
size_t buffer_capacity){
148
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
149
137
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
146
/*
159
147
* Initialize GPGME.
160
148
*/
161
static bool init_gpgme(const char *seckey,
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
162
150
const char *pubkey, const char *tempdir){
163
151
int ret;
164
152
gpgme_error_t rc;
166
154
167
155
168
156
/*
169
* Helper function to insert pub and seckey to the engine keyring.
157
* Helper function to insert pub and seckey to the enigne keyring.
170
158
*/
171
159
bool import_key(const char *filename){
172
160
int fd;
185
173
return false;
186
174
}
187
175
188
rc = gpgme_op_import(mc.ctx, pgp_data);
176
rc = gpgme_op_import(mc->ctx, pgp_data);
189
177
if(rc != GPG_ERR_NO_ERROR){
190
178
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
191
179
gpgme_strsource(rc), gpgme_strerror(rc));
201
189
}
202
190
203
191
if(debug){
204
fprintf(stderr, "Initializing GPGME\n");
192
fprintf(stderr, "Initialize gpgme\n");
205
193
}
206
194
207
195
/* Init GPGME */
234
222
}
235
223
236
224
/* Create new GPGME "context" */
237
rc = gpgme_new(&(mc.ctx));
225
rc = gpgme_new(&(mc->ctx));
238
226
if(rc != GPG_ERR_NO_ERROR){
239
227
fprintf(stderr, "bad gpgme_new: %s: %s\n",
240
228
gpgme_strsource(rc), gpgme_strerror(rc));
252
240
* Decrypt OpenPGP data.
253
241
* Returns -1 on error
254
242
*/
255
static ssize_t pgp_packet_decrypt(const char *cryptotext,
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
256
245
size_t crypto_size,
257
246
char **plaintext){
258
247
gpgme_data_t dh_crypto, dh_plain;
285
274
286
275
/* Decrypt data from the cryptotext data buffer to the plaintext
287
276
data buffer */
288
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
289
278
if(rc != GPG_ERR_NO_ERROR){
290
279
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
291
280
gpgme_strsource(rc), gpgme_strerror(rc));
292
281
plaintext_length = -1;
293
282
if(debug){
294
283
gpgme_decrypt_result_t result;
295
result = gpgme_op_decrypt_result(mc.ctx);
284
result = gpgme_op_decrypt_result(mc->ctx);
296
285
if(result == NULL){
297
286
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
298
287
} else {
334
323
335
324
*plaintext = NULL;
336
325
while(true){
337
plaintext_capacity = incbuffer(plaintext,
326
plaintext_capacity = adjustbuffer(plaintext,
338
327
(size_t)plaintext_length,
339
328
plaintext_capacity);
340
329
if(plaintext_capacity == 0){
341
perror("incbuffer");
330
perror("adjustbuffer");
342
331
plaintext_length = -1;
343
332
goto decrypt_end;
344
333
}
376
365
return plaintext_length;
377
366
}
378
367
379
static const char * safer_gnutls_strerror(int value){
368
static const char * safer_gnutls_strerror(int value) {
380
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
381
370
-Wunreachable-code */
382
371
if(ret == NULL)
390
379
fprintf(stderr, "GnuTLS: %s", string);
391
380
}
392
381
393
static int init_gnutls_global(const char *pubkeyfilename,
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
394
384
const char *seckeyfilename){
395
385
int ret;
396
386
399
389
}
400
390
401
391
ret = gnutls_global_init();
402
if(ret != GNUTLS_E_SUCCESS){
392
if(ret != GNUTLS_E_SUCCESS) {
403
393
fprintf(stderr, "GnuTLS global_init: %s\n",
404
394
safer_gnutls_strerror(ret));
405
395
return -1;
414
404
}
415
405
416
406
/* OpenPGP credentials */
417
gnutls_certificate_allocate_credentials(&mc.cred);
407
gnutls_certificate_allocate_credentials(&mc->cred);
418
408
if(ret != GNUTLS_E_SUCCESS){
419
409
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
420
from
421
-Wunreachable-code
422
*/
410
* from
411
* -Wunreachable-code
412
*/
423
413
safer_gnutls_strerror(ret));
424
414
gnutls_global_deinit();
425
415
return -1;
432
422
}
433
423
434
424
ret = gnutls_certificate_set_openpgp_key_file
435
(mc.cred, pubkeyfilename, seckeyfilename,
425
(mc->cred, pubkeyfilename, seckeyfilename,
436
426
GNUTLS_OPENPGP_FMT_BASE64);
437
if(ret != GNUTLS_E_SUCCESS){
427
if(ret != GNUTLS_E_SUCCESS) {
438
428
fprintf(stderr,
439
429
"Error[%d] while reading the OpenPGP key pair ('%s',"
440
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
444
434
}
445
435
446
436
/* GnuTLS server initialization */
447
ret = gnutls_dh_params_init(&mc.dh_params);
448
if(ret != GNUTLS_E_SUCCESS){
437
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
449
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
450
440
" %s\n", safer_gnutls_strerror(ret));
451
441
goto globalfail;
452
442
}
453
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
454
if(ret != GNUTLS_E_SUCCESS){
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
455
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
456
446
safer_gnutls_strerror(ret));
457
447
goto globalfail;
458
448
}
459
449
460
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
461
451
462
452
return 0;
463
453
464
454
globalfail:
465
455
466
gnutls_certificate_free_credentials(mc.cred);
456
gnutls_certificate_free_credentials(mc->cred);
467
457
gnutls_global_deinit();
468
gnutls_dh_params_deinit(mc.dh_params);
458
gnutls_dh_params_deinit(mc->dh_params);
469
459
return -1;
470
460
}
471
461
472
static int init_gnutls_session(gnutls_session_t *session){
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
473
464
int ret;
474
465
/* GnuTLS session creation */
475
466
ret = gnutls_init(session, GNUTLS_SERVER);
480
471
481
472
{
482
473
const char *err;
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
484
if(ret != GNUTLS_E_SUCCESS){
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
485
476
fprintf(stderr, "Syntax error at: %s\n", err);
486
477
fprintf(stderr, "GnuTLS error: %s\n",
487
478
safer_gnutls_strerror(ret));
491
482
}
492
483
493
484
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
494
mc.cred);
495
if(ret != GNUTLS_E_SUCCESS){
485
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
496
487
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
497
488
safer_gnutls_strerror(ret));
498
489
gnutls_deinit(*session);
503
494
gnutls_certificate_server_set_request(*session,
504
495
GNUTLS_CERT_IGNORE);
505
496
506
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
507
498
508
499
return 0;
509
500
}
515
506
/* Called when a Mandos server is found */
516
507
static int start_mandos_communication(const char *ip, uint16_t port,
517
508
AvahiIfIndex if_index,
518
int af){
509
mandos_context *mc){
519
510
int ret, tcp_sd;
520
511
ssize_t sret;
521
union {
522
struct sockaddr_in in;
523
struct sockaddr_in6 in6;
524
} to;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
525
513
char *buffer = NULL;
526
514
char *decrypted_buffer;
527
515
size_t buffer_length = 0;
529
517
ssize_t decrypted_buffer_size;
530
518
size_t written;
531
519
int retval = 0;
520
char interface[IF_NAMESIZE];
532
521
gnutls_session_t 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);
522
523
ret = init_gnutls_session(mc, &session);
548
524
if(ret != 0){
549
525
return -1;
550
526
}
551
527
552
528
if(debug){
553
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
554
530
"\n", ip, port);
555
531
}
556
532
557
tcp_sd = socket(pf, SOCK_STREAM, 0);
558
if(tcp_sd < 0){
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
if(tcp_sd < 0) {
559
535
perror("socket");
560
536
return -1;
561
537
}
562
538
539
if(debug){
540
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
perror("if_indextoname");
542
return -1;
543
}
544
fprintf(stderr, "Binding to interface %s\n", interface);
545
}
546
563
547
memset(&to, 0, sizeof(to));
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
}
548
to.in6.sin6_family = AF_INET6;
549
/* It would be nice to have a way to detect if we were passed an
550
IPv4 address here. Now we assume an IPv6 address. */
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
571
552
if(ret < 0 ){
572
553
perror("inet_pton");
573
554
return -1;
576
557
fprintf(stderr, "Bad address: %s\n", ip);
577
558
return -1;
578
559
}
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
to.in6.sin6_port = htons(port); /* Spurious warnings from
597
561
-Wconversion and
598
562
-Wunreachable-code */
599
}
563
564
to.in6.sin6_scope_id = (uint32_t)if_index;
600
565
601
566
if(debug){
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){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
569
char addrstr[INET6_ADDRSTRLEN] = "";
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
571
sizeof(addrstr)) == NULL){
625
572
perror("inet_ntop");
626
573
} else {
627
574
if(strcmp(addrstr, ip) != 0){
630
577
}
631
578
}
632
579
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
ret = connect(tcp_sd, &to.in, sizeof(to));
638
581
if(ret < 0){
639
582
perror("connect");
640
583
return -1;
686
629
/* Read OpenPGP packet that contains the wanted password */
687
630
688
631
if(debug){
689
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
690
633
ip);
691
634
}
692
635
693
636
while(true){
694
buffer_capacity = incbuffer(&buffer, buffer_length,
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
695
638
buffer_capacity);
696
639
if(buffer_capacity == 0){
697
perror("incbuffer");
640
perror("adjustbuffer");
698
641
retval = -1;
699
642
goto mandos_end;
700
643
}
739
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
740
683
741
684
if(buffer_length > 0){
742
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
743
686
buffer_length,
744
687
&decrypted_buffer);
745
688
if(decrypted_buffer_size >= 0){
780
723
781
724
static void resolve_callback(AvahiSServiceResolver *r,
782
725
AvahiIfIndex interface,
783
AvahiProtocol proto,
726
AVAHI_GCC_UNUSED AvahiProtocol protocol,
784
727
AvahiResolverEvent event,
785
728
const char *name,
786
729
const char *type,
791
734
AVAHI_GCC_UNUSED AvahiStringList *txt,
792
735
AVAHI_GCC_UNUSED AvahiLookupResultFlags
793
736
flags,
794
AVAHI_GCC_UNUSED void* userdata){
737
void* userdata) {
738
mandos_context *mc = userdata;
795
739
assert(r);
796
740
797
741
/* Called whenever a service has been resolved successfully or
798
742
timed out */
799
743
800
switch(event){
744
switch(event) {
801
745
default:
802
746
case AVAHI_RESOLVER_FAILURE:
803
747
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
804
748
" of type '%s' in domain '%s': %s\n", name, type, domain,
805
avahi_strerror(avahi_server_errno(mc.server)));
749
avahi_strerror(avahi_server_errno(mc->server)));
806
750
break;
807
751
808
752
case AVAHI_RESOLVER_FOUND:
814
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
815
759
ip, (intmax_t)interface, port);
816
760
}
817
int ret = start_mandos_communication(ip, port, interface,
818
avahi_proto_to_af(proto));
761
int ret = start_mandos_communication(ip, port, interface, mc);
819
762
if(ret == 0){
820
avahi_simple_poll_quit(mc.simple_poll);
763
avahi_simple_poll_quit(mc->simple_poll);
821
764
}
822
765
}
823
766
}
824
767
avahi_s_service_resolver_free(r);
825
768
}
826
769
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){
770
static void browse_callback( AvahiSServiceBrowser *b,
771
AvahiIfIndex interface,
772
AvahiProtocol protocol,
773
AvahiBrowserEvent event,
774
const char *name,
775
const char *type,
776
const char *domain,
777
AVAHI_GCC_UNUSED AvahiLookupResultFlags
778
flags,
779
void* userdata) {
780
mandos_context *mc = userdata;
837
781
assert(b);
838
782
839
783
/* Called whenever a new services becomes available on the LAN or
840
784
is removed from the LAN */
841
785
842
switch(event){
786
switch(event) {
843
787
default:
844
788
case AVAHI_BROWSER_FAILURE:
845
789
846
790
fprintf(stderr, "(Avahi browser) %s\n",
847
avahi_strerror(avahi_server_errno(mc.server)));
848
avahi_simple_poll_quit(mc.simple_poll);
791
avahi_strerror(avahi_server_errno(mc->server)));
792
avahi_simple_poll_quit(mc->simple_poll);
849
793
return;
850
794
851
795
case AVAHI_BROWSER_NEW:
854
798
the callback function is called the Avahi server will free the
855
799
resolver for us. */
856
800
857
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
858
name, type, domain, protocol, 0,
859
resolve_callback, NULL) == NULL)
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
802
protocol, name, type, domain,
803
AVAHI_PROTO_INET6, 0,
804
resolve_callback, mc)))
860
805
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
861
name, avahi_strerror(avahi_server_errno(mc.server)));
806
name, avahi_strerror(avahi_server_errno(mc->server)));
862
807
break;
863
808
864
809
case AVAHI_BROWSER_REMOVE:
873
818
}
874
819
}
875
820
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
891
821
int main(int argc, char *argv[]){
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){
822
AvahiSServiceBrowser *sb = NULL;
823
int error;
824
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
int exitcode = EXIT_SUCCESS;
828
const char *interface = "eth0";
829
struct ifreq network;
830
int sd;
831
uid_t uid;
832
gid_t gid;
833
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
839
mandos_context mc = { .simple_poll = NULL, .server = NULL,
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initalized = false;
843
bool gpgme_initalized = false;
844
double delay = 2.5;
845
846
{
847
struct argp_option options[] = {
848
{ .name = "debug", .key = 128,
849
.doc = "Debug mode", .group = 3 },
850
{ .name = "connect", .key = 'c',
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
853
.group = 1 },
854
{ .name = "interface", .key = 'i',
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
858
.group = 1 },
859
{ .name = "seckey", .key = 's',
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
862
.group = 1 },
863
{ .name = "pubkey", .key = 'p',
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
866
.group = 2 },
867
{ .name = "dh-bits", .key = 129,
868
.arg = "BITS",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
871
.group = 2 },
872
{ .name = "priority", .key = 130,
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
876
{ .name = "delay", .key = 131,
877
.arg = "SECONDS",
878
.doc = "Maximum delay to wait for interface startup",
879
.group = 2 },
880
{ .name = NULL }
881
};
882
883
error_t parse_opt(int key, char *arg,
884
struct argp_state *state) {
885
switch(key) {
886
case 128: /* --debug */
887
debug = true;
888
break;
889
case 'c': /* --connect */
890
connect_to = arg;
891
break;
892
case 'i': /* --interface */
893
interface = arg;
894
break;
895
case 's': /* --seckey */
896
seckey = arg;
897
break;
898
case 'p': /* --pubkey */
899
pubkey = arg;
900
break;
901
case 129: /* --dh-bits */
902
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
903
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
904
or arg[numchars] != '\0'){
905
fprintf(stderr, "Bad number of DH bits\n");
906
exit(EXIT_FAILURE);
907
}
908
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
909
break;
910
case 130: /* --priority */
911
mc.priority = arg;
912
break;
913
case 131: /* --delay */
914
ret = sscanf(arg, "%lf%n", &delay, &numchars);
915
if(ret < 1 or arg[numchars] != '\0'){
916
fprintf(stderr, "Bad delay\n");
917
exit(EXIT_FAILURE);
918
}
919
break;
920
case ARGP_KEY_ARG:
921
argp_usage(state);
922
case ARGP_KEY_END:
923
break;
924
default:
925
return ARGP_ERR_UNKNOWN;
926
}
927
return 0;
928
}
929
930
struct argp argp = { .options = options, .parser = parse_opt,
931
.args_doc = "",
932
.doc = "Mandos client -- Get and decrypt"
933
" passwords from a Mandos server" };
934
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
935
if(ret == ARGP_ERR_UNKNOWN){
936
fprintf(stderr, "Unknown error while parsing arguments\n");
937
exitcode = EXIT_FAILURE;
938
goto end;
939
}
940
}
941
942
/* If the interface is down, bring it up */
943
{
944
// Lower kernel loglevel to KERN_NOTICE to avoid
945
// KERN_INFO messages to mess up the prompt
946
ret = klogctl(8, NULL, 5);
947
if(ret == -1){
948
perror("klogctl");
949
}
950
951
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
952
if(sd < 0) {
953
perror("socket");
954
exitcode = EXIT_FAILURE;
955
ret = klogctl(7, NULL, 0);
956
if(ret == -1){
957
perror("klogctl");
958
}
959
goto end;
960
}
961
strcpy(network.ifr_name, interface);
962
ret = ioctl(sd, SIOCGIFFLAGS, &network);
963
if(ret == -1){
964
perror("ioctl SIOCGIFFLAGS");
965
ret = klogctl(7, NULL, 0);
966
if(ret == -1){
967
perror("klogctl");
968
}
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
if((network.ifr_flags & IFF_UP) == 0){
973
network.ifr_flags |= IFF_UP;
974
ret = ioctl(sd, SIOCSIFFLAGS, &network);
975
if(ret == -1){
976
perror("ioctl SIOCSIFFLAGS");
977
exitcode = EXIT_FAILURE;
1106
978
ret = klogctl(7, NULL, 0);
1107
979
if(ret == -1){
1108
980
perror("klogctl");
1109
981
}
1110
}
1111
#endif /* __linux__ */
1112
goto end;
1113
}
1114
}
1115
/* sleep checking until interface is running */
1116
for(int i=0; i < delay * 4; i++){
1117
ret = ioctl(sd, SIOCGIFFLAGS, &network);
982
goto end;
983
}
984
}
985
// sleep checking until interface is running
986
for(int i=0; i < delay * 4; i++){
987
ret = ioctl(sd, SIOCGIFFLAGS, &network);
988
if(ret == -1){
989
perror("ioctl SIOCGIFFLAGS");
990
} else if(network.ifr_flags & IFF_RUNNING){
991
break;
992
}
993
struct timespec sleeptime = { .tv_nsec = 250000000 };
994
nanosleep(&sleeptime, NULL);
995
}
996
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1118
997
if(ret == -1){
1119
perror("ioctl SIOCGIFFLAGS");
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 */
998
perror("close");
999
}
1000
// Restores kernel loglevel to default
1136
1001
ret = klogctl(7, NULL, 0);
1137
1002
if(ret == -1){
1138
1003
perror("klogctl");
1139
1004
}
1140
1005
}
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'){
1006
1007
uid = getuid();
1008
gid = getgid();
1009
1010
ret = setuid(uid);
1011
if(ret == -1){
1012
perror("setuid");
1013
}
1014
1015
setgid(gid);
1016
if(ret == -1){
1017
perror("setgid");
1018
}
1019
1020
ret = init_gnutls_global(&mc, pubkey, seckey);
1021
if(ret == -1){
1022
fprintf(stderr, "init_gnutls_global failed\n");
1023
exitcode = EXIT_FAILURE;
1024
goto end;
1025
} else {
1026
gnutls_initalized = true;
1027
}
1028
1029
if(mkdtemp(tempdir) == NULL){
1030
perror("mkdtemp");
1031
tempdir[0] = '\0';
1032
goto end;
1033
}
1034
1035
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1036
fprintf(stderr, "gpgme_initalized failed\n");
1037
exitcode = EXIT_FAILURE;
1038
goto end;
1039
} else {
1040
gpgme_initalized = true;
1041
}
1042
1182
1043
if_index = (AvahiIfIndex) if_nametoindex(interface);
1183
1044
if(if_index == 0){
1184
1045
fprintf(stderr, "No such interface: \"%s\"\n", interface);
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
1046
exit(EXIT_FAILURE);
1047
}
1048
1049
if(connect_to != NULL){
1050
/* Connect directly, do not use Zeroconf */
1051
/* (Mainly meant for debugging) */
1052
char *address = strrchr(connect_to, ':');
1053
if(address == NULL){
1054
fprintf(stderr, "No colon in address\n");
1055
exitcode = EXIT_FAILURE;
1056
goto end;
1057
}
1058
uint16_t port;
1059
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1060
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1061
or address[numchars+1] != '\0'){
1062
fprintf(stderr, "Bad port number\n");
1063
exitcode = EXIT_FAILURE;
1064
goto end;
1065
}
1066
port = (uint16_t)tmpmax;
1067
*address = '\0';
1068
address = connect_to;
1069
ret = start_mandos_communication(address, port, if_index, &mc);
1070
if(ret < 0){
1071
exitcode = EXIT_FAILURE;
1072
} else {
1073
exitcode = EXIT_SUCCESS;
1074
}
1075
goto end;
1076
}
1077
1078
if(not debug){
1079
avahi_set_log_function(empty_log);
1080
}
1081
1082
/* Initialize the pseudo-RNG for Avahi */
1083
srand((unsigned int) time(NULL));
1084
1085
/* Allocate main Avahi loop object */
1086
mc.simple_poll = avahi_simple_poll_new();
1087
if(mc.simple_poll == NULL) {
1088
fprintf(stderr, "Avahi: Failed to create simple poll"
1089
" object.\n");
1090
exitcode = EXIT_FAILURE;
1091
goto end;
1092
}
1093
1094
{
1095
AvahiServerConfig config;
1096
/* Do not publish any local Zeroconf records */
1097
avahi_server_config_init(&config);
1098
config.publish_hinfo = 0;
1099
config.publish_addresses = 0;
1100
config.publish_workstation = 0;
1101
config.publish_domain = 0;
1102
1103
/* Allocate a new server */
1104
mc.server = avahi_server_new(avahi_simple_poll_get
1105
(mc.simple_poll), &config, NULL,
1106
NULL, &error);
1107
1108
/* Free the Avahi configuration data */
1109
avahi_server_config_free(&config);
1110
}
1111
1112
/* Check if creating the Avahi server object succeeded */
1113
if(mc.server == NULL) {
1114
fprintf(stderr, "Failed to create Avahi server: %s\n",
1115
avahi_strerror(error));
1116
exitcode = EXIT_FAILURE;
1117
goto end;
1118
}
1119
1120
/* Create the Avahi service browser */
1121
sb = avahi_s_service_browser_new(mc.server, if_index,
1122
AVAHI_PROTO_INET6,
1123
"_mandos._tcp", NULL, 0,
1124
browse_callback, &mc);
1125
if(sb == NULL) {
1126
fprintf(stderr, "Failed to create service browser: %s\n",
1127
avahi_strerror(avahi_server_errno(mc.server)));
1128
exitcode = EXIT_FAILURE;
1129
goto end;
1130
}
1131
1132
/* Run the main loop */
1133
1134
if(debug){
1135
fprintf(stderr, "Starting Avahi loop search\n");
1136
}
1137
1138
avahi_simple_poll_loop(mc.simple_poll);
1139
1272
1140
end:
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;
1141
1142
if(debug){
1143
fprintf(stderr, "%s exiting\n", argv[0]);
1144
}
1145
1146
/* Cleanup things */
1147
if(sb != NULL)
1148
avahi_s_service_browser_free(sb);
1149
1150
if(mc.server != NULL)
1151
avahi_server_free(mc.server);
1152
1153
if(mc.simple_poll != NULL)
1154
avahi_simple_poll_free(mc.simple_poll);
1155
1156
if(gnutls_initalized){
1157
gnutls_certificate_free_credentials(mc.cred);
1158
gnutls_global_deinit();
1159
gnutls_dh_params_deinit(mc.dh_params);
1160
}
1161
1162
if(gpgme_initalized){
1163
gpgme_release(mc.ctx);
1164
}
1165
1166
/* Removes the temp directory used by GPGME */
1167
if(tempdir[0] != '\0'){
1168
DIR *d;
1169
struct dirent *direntry;
1170
d = opendir(tempdir);
1171
if(d == NULL){
1172
if(errno != ENOENT){
1173
perror("opendir");
1174
}
1175
} else {
1176
while(true){
1177
direntry = readdir(d);
1178
if(direntry == NULL){
1179
break;
1180
}
1181
if(direntry->d_type == DT_REG){
1182
char *fullname = NULL;
1183
ret = asprintf(&fullname, "%s/%s", tempdir,
1184
direntry->d_name);
1185
if(ret < 0){
1186
perror("asprintf");
1187
continue;
1188
}
1189
ret = unlink(fullname);
1190
if(ret == -1){
1191
fprintf(stderr, "unlink(\"%s\"): %s",
1192
fullname, strerror(errno));
1193
}
1194
free(fullname);
1195
}
1196
}
1197
closedir(d);
1198
}
1199
ret = rmdir(tempdir);
1200
if(ret == -1 and errno != ENOENT){
1201
perror("rmdir");
1202
}
1203
}
1204
1205
return exitcode;
1343
1206
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0