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» Revision
237.2.74
(compared to revision 24.1.128)
: plugins.d/mandos-client.c
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- Committer: Teddy Hogeborn
- Date: 2009-02-12 18:56:52 UTC
- mto: (237.4.2 mandos-pipe-ipc) (24.1.137 mandos) (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-20090212185652-ast00yprt2pe2l4p
Overflows are not detected by sscanf(), so stop using it:
* plugin-runner.c (main/parse_opt): Change from using "sscanf()" to
"strtoimax()".
* plugins.d/mandos-client.c (main/parse_opt, main): Change from using
"sscanf()" to
"strtoimax()" and
"strtof()".
* splashy.c (main): Change from using "sscanf()" to "strtoimax()".
* usplash.c (main): - '' -
* plugin-runner.c (main/parse_opt): Change from using "sscanf()" to
"strtoimax()".
* plugins.d/mandos-client.c (main/parse_opt, main): Change from using
"sscanf()" to
"strtoimax()" and
"strtof()".
* splashy.c (main): Change from using "sscanf()" to "strtoimax()".
* usplash.c (main): - '' -
- 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(), nanosleep() */
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__
77
83
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
78
85
79
86
/* Avahi */
80
87
/* All Avahi types, constants and functions
126
133
gpgme_ctx_t ctx;
127
134
} mandos_context;
128
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
129
141
/*
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "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,
132
144
* "buffer_length" is how much is already used.
133
145
*/
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
146
size_t incbuffer(char **buffer, size_t buffer_length,
135
147
size_t buffer_capacity){
136
148
if(buffer_length + BUFFER_SIZE > buffer_capacity){
137
149
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
146
158
/*
147
159
* Initialize GPGME.
148
160
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
161
static bool init_gpgme(const char *seckey,
150
162
const char *pubkey, const char *tempdir){
151
163
int ret;
152
164
gpgme_error_t rc;
154
166
155
167
156
168
/*
157
* Helper function to insert pub and seckey to the enigne keyring.
169
* Helper function to insert pub and seckey to the engine keyring.
158
170
*/
159
171
bool import_key(const char *filename){
160
172
int fd;
173
185
return false;
174
186
}
175
187
176
rc = gpgme_op_import(mc->ctx, pgp_data);
188
rc = gpgme_op_import(mc.ctx, pgp_data);
177
189
if(rc != GPG_ERR_NO_ERROR){
178
190
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
191
gpgme_strsource(rc), gpgme_strerror(rc));
189
201
}
190
202
191
203
if(debug){
192
fprintf(stderr, "Initialize gpgme\n");
204
fprintf(stderr, "Initializing GPGME\n");
193
205
}
194
206
195
207
/* Init GPGME */
222
234
}
223
235
224
236
/* Create new GPGME "context" */
225
rc = gpgme_new(&(mc->ctx));
237
rc = gpgme_new(&(mc.ctx));
226
238
if(rc != GPG_ERR_NO_ERROR){
227
239
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
240
gpgme_strsource(rc), gpgme_strerror(rc));
240
252
* Decrypt OpenPGP data.
241
253
* Returns -1 on error
242
254
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
255
static ssize_t pgp_packet_decrypt(const char *cryptotext,
245
256
size_t crypto_size,
246
257
char **plaintext){
247
258
gpgme_data_t dh_crypto, dh_plain;
274
285
275
286
/* Decrypt data from the cryptotext data buffer to the plaintext
276
287
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
288
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
278
289
if(rc != GPG_ERR_NO_ERROR){
279
290
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
291
gpgme_strsource(rc), gpgme_strerror(rc));
281
292
plaintext_length = -1;
282
293
if(debug){
283
294
gpgme_decrypt_result_t result;
284
result = gpgme_op_decrypt_result(mc->ctx);
295
result = gpgme_op_decrypt_result(mc.ctx);
285
296
if(result == NULL){
286
297
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
298
} else {
323
334
324
335
*plaintext = NULL;
325
336
while(true){
326
plaintext_capacity = adjustbuffer(plaintext,
337
plaintext_capacity = incbuffer(plaintext,
327
338
(size_t)plaintext_length,
328
339
plaintext_capacity);
329
340
if(plaintext_capacity == 0){
330
perror("adjustbuffer");
341
perror("incbuffer");
331
342
plaintext_length = -1;
332
343
goto decrypt_end;
333
344
}
365
376
return plaintext_length;
366
377
}
367
378
368
static const char * safer_gnutls_strerror(int value) {
379
static const char * safer_gnutls_strerror(int value){
369
380
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
381
-Wunreachable-code */
371
382
if(ret == NULL)
379
390
fprintf(stderr, "GnuTLS: %s", string);
380
391
}
381
392
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
393
static int init_gnutls_global(const char *pubkeyfilename,
384
394
const char *seckeyfilename){
385
395
int ret;
386
396
389
399
}
390
400
391
401
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
402
if(ret != GNUTLS_E_SUCCESS){
393
403
fprintf(stderr, "GnuTLS global_init: %s\n",
394
404
safer_gnutls_strerror(ret));
395
405
return -1;
404
414
}
405
415
406
416
/* OpenPGP credentials */
407
gnutls_certificate_allocate_credentials(&mc->cred);
417
gnutls_certificate_allocate_credentials(&mc.cred);
408
418
if(ret != GNUTLS_E_SUCCESS){
409
419
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
410
* from
411
* -Wunreachable-code
412
*/
420
from
421
-Wunreachable-code
422
*/
413
423
safer_gnutls_strerror(ret));
414
424
gnutls_global_deinit();
415
425
return -1;
422
432
}
423
433
424
434
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
435
(mc.cred, pubkeyfilename, seckeyfilename,
426
436
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
437
if(ret != GNUTLS_E_SUCCESS){
428
438
fprintf(stderr,
429
439
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
440
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
434
444
}
435
445
436
446
/* GnuTLS server initialization */
437
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
447
ret = gnutls_dh_params_init(&mc.dh_params);
448
if(ret != GNUTLS_E_SUCCESS){
439
449
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
450
" %s\n", safer_gnutls_strerror(ret));
441
451
goto globalfail;
442
452
}
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
453
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
454
if(ret != GNUTLS_E_SUCCESS){
445
455
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
456
safer_gnutls_strerror(ret));
447
457
goto globalfail;
448
458
}
449
459
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
460
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
451
461
452
462
return 0;
453
463
454
464
globalfail:
455
465
456
gnutls_certificate_free_credentials(mc->cred);
466
gnutls_certificate_free_credentials(mc.cred);
457
467
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
468
gnutls_dh_params_deinit(mc.dh_params);
459
469
return -1;
460
470
}
461
471
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
472
static int init_gnutls_session(gnutls_session_t *session){
464
473
int ret;
465
474
/* GnuTLS session creation */
466
475
ret = gnutls_init(session, GNUTLS_SERVER);
471
480
472
481
{
473
482
const char *err;
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
484
if(ret != GNUTLS_E_SUCCESS){
476
485
fprintf(stderr, "Syntax error at: %s\n", err);
477
486
fprintf(stderr, "GnuTLS error: %s\n",
478
487
safer_gnutls_strerror(ret));
482
491
}
483
492
484
493
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
494
mc.cred);
495
if(ret != GNUTLS_E_SUCCESS){
487
496
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
497
safer_gnutls_strerror(ret));
489
498
gnutls_deinit(*session);
494
503
gnutls_certificate_server_set_request(*session,
495
504
GNUTLS_CERT_IGNORE);
496
505
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
506
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
498
507
499
508
return 0;
500
509
}
506
515
/* Called when a Mandos server is found */
507
516
static int start_mandos_communication(const char *ip, uint16_t port,
508
517
AvahiIfIndex if_index,
509
mandos_context *mc){
518
int af){
510
519
int ret, tcp_sd;
511
520
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
521
union {
522
struct sockaddr_in in;
523
struct sockaddr_in6 in6;
524
} to;
513
525
char *buffer = NULL;
514
526
char *decrypted_buffer;
515
527
size_t buffer_length = 0;
517
529
ssize_t decrypted_buffer_size;
518
530
size_t written;
519
531
int retval = 0;
520
char interface[IF_NAMESIZE];
521
532
gnutls_session_t session;
522
523
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);
524
548
if(ret != 0){
525
549
return -1;
526
550
}
527
551
528
552
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
553
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
530
554
"\n", ip, port);
531
555
}
532
556
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
if(tcp_sd < 0) {
557
tcp_sd = socket(pf, SOCK_STREAM, 0);
558
if(tcp_sd < 0){
535
559
perror("socket");
536
560
return -1;
537
561
}
538
562
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
547
563
memset(&to, 0, sizeof(to));
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);
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
}
552
571
if(ret < 0 ){
553
572
perror("inet_pton");
554
573
return -1;
557
576
fprintf(stderr, "Bad address: %s\n", ip);
558
577
return -1;
559
578
}
560
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
561
597
-Wconversion and
562
598
-Wunreachable-code */
563
564
to.in6.sin6_scope_id = (uint32_t)if_index;
599
}
565
600
566
601
if(debug){
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){
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){
572
625
perror("inet_ntop");
573
626
} else {
574
627
if(strcmp(addrstr, ip) != 0){
577
630
}
578
631
}
579
632
580
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
}
581
638
if(ret < 0){
582
639
perror("connect");
583
640
return -1;
629
686
/* Read OpenPGP packet that contains the wanted password */
630
687
631
688
if(debug){
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
689
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
633
690
ip);
634
691
}
635
692
636
693
while(true){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
694
buffer_capacity = incbuffer(&buffer, buffer_length,
638
695
buffer_capacity);
639
696
if(buffer_capacity == 0){
640
perror("adjustbuffer");
697
perror("incbuffer");
641
698
retval = -1;
642
699
goto mandos_end;
643
700
}
682
739
gnutls_bye(session, GNUTLS_SHUT_RDWR);
683
740
684
741
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
742
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
743
buffer_length,
687
744
&decrypted_buffer);
688
745
if(decrypted_buffer_size >= 0){
723
780
724
781
static void resolve_callback(AvahiSServiceResolver *r,
725
782
AvahiIfIndex interface,
726
AVAHI_GCC_UNUSED AvahiProtocol protocol,
783
AvahiProtocol proto,
727
784
AvahiResolverEvent event,
728
785
const char *name,
729
786
const char *type,
734
791
AVAHI_GCC_UNUSED AvahiStringList *txt,
735
792
AVAHI_GCC_UNUSED AvahiLookupResultFlags
736
793
flags,
737
void* userdata) {
738
mandos_context *mc = userdata;
794
AVAHI_GCC_UNUSED void* userdata){
739
795
assert(r);
740
796
741
797
/* Called whenever a service has been resolved successfully or
742
798
timed out */
743
799
744
switch(event) {
800
switch(event){
745
801
default:
746
802
case AVAHI_RESOLVER_FAILURE:
747
803
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
748
804
" of type '%s' in domain '%s': %s\n", name, type, domain,
749
avahi_strerror(avahi_server_errno(mc->server)));
805
avahi_strerror(avahi_server_errno(mc.server)));
750
806
break;
751
807
752
808
case AVAHI_RESOLVER_FOUND:
758
814
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
815
ip, (intmax_t)interface, port);
760
816
}
761
int ret = start_mandos_communication(ip, port, interface, mc);
817
int ret = start_mandos_communication(ip, port, interface,
818
avahi_proto_to_af(proto));
762
819
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
820
avahi_simple_poll_quit(mc.simple_poll);
764
821
}
765
822
}
766
823
}
767
824
avahi_s_service_resolver_free(r);
768
825
}
769
826
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;
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){
781
837
assert(b);
782
838
783
839
/* Called whenever a new services becomes available on the LAN or
784
840
is removed from the LAN */
785
841
786
switch(event) {
842
switch(event){
787
843
default:
788
844
case AVAHI_BROWSER_FAILURE:
789
845
790
846
fprintf(stderr, "(Avahi browser) %s\n",
791
avahi_strerror(avahi_server_errno(mc->server)));
792
avahi_simple_poll_quit(mc->simple_poll);
847
avahi_strerror(avahi_server_errno(mc.server)));
848
avahi_simple_poll_quit(mc.simple_poll);
793
849
return;
794
850
795
851
case AVAHI_BROWSER_NEW:
798
854
the callback function is called the Avahi server will free the
799
855
resolver for us. */
800
856
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
857
if(!(avahi_s_service_resolver_new(mc.server, interface,
802
858
protocol, name, type, domain,
803
859
AVAHI_PROTO_INET6, 0,
804
resolve_callback, mc)))
860
resolve_callback, NULL)))
805
861
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
806
name, avahi_strerror(avahi_server_errno(mc->server)));
862
name, avahi_strerror(avahi_server_errno(mc.server)));
807
863
break;
808
864
809
865
case AVAHI_BROWSER_REMOVE:
818
874
}
819
875
}
820
876
877
sig_atomic_t quit_now = 0;
878
879
/* stop main loop after sigterm has been called */
880
static void handle_sigterm(__attribute__((unused)) int sig){
881
if(quit_now){
882
return;
883
}
884
quit_now = 1;
885
int old_errno = errno;
886
if(mc.simple_poll != NULL){
887
avahi_simple_poll_quit(mc.simple_poll);
888
}
889
errno = old_errno;
890
}
891
821
892
int main(int argc, char *argv[]){
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;
893
AvahiSServiceBrowser *sb = NULL;
894
int error;
895
int ret;
896
intmax_t tmpmax;
897
char *tmp;
898
int exitcode = EXIT_SUCCESS;
899
const char *interface = "eth0";
900
struct ifreq network;
901
int sd;
902
uid_t uid;
903
gid_t gid;
904
char *connect_to = NULL;
905
char tempdir[] = "/tmp/mandosXXXXXX";
906
bool tempdir_created = false;
907
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
908
const char *seckey = PATHDIR "/" SECKEY;
909
const char *pubkey = PATHDIR "/" PUBKEY;
910
911
/* Initialize Mandos context */
912
mc = (mandos_context){ .simple_poll = NULL, .server = NULL,
913
.dh_bits = 1024, .priority = "SECURE256"
914
":!CTYPE-X.509:+CTYPE-OPENPGP" };
915
bool gnutls_initialized = false;
916
bool gpgme_initialized = false;
917
float delay = 2.5f;
918
919
struct sigaction old_sigterm_action;
920
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
921
922
{
923
struct argp_option options[] = {
924
{ .name = "debug", .key = 128,
925
.doc = "Debug mode", .group = 3 },
926
{ .name = "connect", .key = 'c',
927
.arg = "ADDRESS:PORT",
928
.doc = "Connect directly to a specific Mandos server",
929
.group = 1 },
930
{ .name = "interface", .key = 'i',
931
.arg = "NAME",
932
.doc = "Network interface that will be used to search for"
933
" Mandos servers",
934
.group = 1 },
935
{ .name = "seckey", .key = 's',
936
.arg = "FILE",
937
.doc = "OpenPGP secret key file base name",
938
.group = 1 },
939
{ .name = "pubkey", .key = 'p',
940
.arg = "FILE",
941
.doc = "OpenPGP public key file base name",
942
.group = 2 },
943
{ .name = "dh-bits", .key = 129,
944
.arg = "BITS",
945
.doc = "Bit length of the prime number used in the"
946
" Diffie-Hellman key exchange",
947
.group = 2 },
948
{ .name = "priority", .key = 130,
949
.arg = "STRING",
950
.doc = "GnuTLS priority string for the TLS handshake",
951
.group = 1 },
952
{ .name = "delay", .key = 131,
953
.arg = "SECONDS",
954
.doc = "Maximum delay to wait for interface startup",
955
.group = 2 },
956
{ .name = NULL }
957
};
958
959
error_t parse_opt(int key, char *arg,
960
struct argp_state *state){
961
switch(key){
962
case 128: /* --debug */
963
debug = true;
964
break;
965
case 'c': /* --connect */
966
connect_to = arg;
967
break;
968
case 'i': /* --interface */
969
interface = arg;
970
break;
971
case 's': /* --seckey */
972
seckey = arg;
973
break;
974
case 'p': /* --pubkey */
975
pubkey = arg;
976
break;
977
case 129: /* --dh-bits */
978
errno = 0;
979
tmpmax = strtoimax(arg, &tmp, 10);
980
if(errno != 0 or tmp == arg or *tmp != '\0'
981
or tmpmax != (typeof(mc.dh_bits))tmpmax){
982
fprintf(stderr, "Bad number of DH bits\n");
983
exit(EXIT_FAILURE);
984
}
985
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
986
break;
987
case 130: /* --priority */
988
mc.priority = arg;
989
break;
990
case 131: /* --delay */
991
errno = 0;
992
delay = strtof(arg, &tmp);
993
if(errno != 0 or tmp == arg or *tmp != '\0'){
994
fprintf(stderr, "Bad delay\n");
995
exit(EXIT_FAILURE);
996
}
997
break;
998
case ARGP_KEY_ARG:
999
argp_usage(state);
1000
case ARGP_KEY_END:
1001
break;
1002
default:
1003
return ARGP_ERR_UNKNOWN;
1004
}
1005
return 0;
1006
}
1007
1008
struct argp argp = { .options = options, .parser = parse_opt,
1009
.args_doc = "",
1010
.doc = "Mandos client -- Get and decrypt"
1011
" passwords from a Mandos server" };
1012
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1013
if(ret == ARGP_ERR_UNKNOWN){
1014
fprintf(stderr, "Unknown error while parsing arguments\n");
1015
exitcode = EXIT_FAILURE;
1016
goto end;
1017
}
1018
}
1019
1020
if(not debug){
1021
avahi_set_log_function(empty_log);
1022
}
1023
1024
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1025
from the signal handler */
1026
/* Initialize the pseudo-RNG for Avahi */
1027
srand((unsigned int) time(NULL));
1028
mc.simple_poll = avahi_simple_poll_new();
1029
if(mc.simple_poll == NULL){
1030
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1031
exitcode = EXIT_FAILURE;
1032
goto end;
1033
}
1034
1035
sigemptyset(&sigterm_action.sa_mask);
1036
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1037
if(ret == -1){
1038
perror("sigaddset");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
}
1042
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1043
if(ret == -1){
1044
perror("sigaddset");
1045
exitcode = EXIT_FAILURE;
1046
goto end;
1047
}
1048
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1049
if(ret == -1){
1050
perror("sigaddset");
1051
exitcode = EXIT_FAILURE;
1052
goto end;
1053
}
1054
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1055
if(ret == -1){
1056
perror("sigaction");
1057
exitcode = EXIT_FAILURE;
1058
goto end;
1059
}
1060
1061
/* If the interface is down, bring it up */
1062
if(interface[0] != '\0'){
1063
#ifdef __linux__
1064
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1065
messages to mess up the prompt */
1066
ret = klogctl(8, NULL, 5);
1067
bool restore_loglevel = true;
1068
if(ret == -1){
1069
restore_loglevel = false;
1070
perror("klogctl");
1071
}
1072
#endif /* __linux__ */
1073
1074
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1075
if(sd < 0){
1076
perror("socket");
1077
exitcode = EXIT_FAILURE;
1078
#ifdef __linux__
1079
if(restore_loglevel){
1080
ret = klogctl(7, NULL, 0);
1081
if(ret == -1){
1082
perror("klogctl");
1083
}
1084
}
1085
#endif /* __linux__ */
1086
goto end;
1087
}
1088
strcpy(network.ifr_name, interface);
1089
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1090
if(ret == -1){
1091
perror("ioctl SIOCGIFFLAGS");
1092
#ifdef __linux__
1093
if(restore_loglevel){
1094
ret = klogctl(7, NULL, 0);
1095
if(ret == -1){
1096
perror("klogctl");
1097
}
1098
}
1099
#endif /* __linux__ */
1100
exitcode = EXIT_FAILURE;
1101
goto end;
1102
}
1103
if((network.ifr_flags & IFF_UP) == 0){
1104
network.ifr_flags |= IFF_UP;
1105
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1106
if(ret == -1){
1107
perror("ioctl SIOCSIFFLAGS");
1108
exitcode = EXIT_FAILURE;
1109
#ifdef __linux__
1110
if(restore_loglevel){
978
1111
ret = klogctl(7, NULL, 0);
979
1112
if(ret == -1){
980
1113
perror("klogctl");
981
1114
}
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));
1115
}
1116
#endif /* __linux__ */
1117
goto end;
1118
}
1119
}
1120
/* sleep checking until interface is running */
1121
for(int i=0; i < delay * 4; i++){
1122
ret = ioctl(sd, SIOCGIFFLAGS, &network);
997
1123
if(ret == -1){
998
perror("close");
999
}
1000
// Restores kernel loglevel to default
1124
perror("ioctl SIOCGIFFLAGS");
1125
} else if(network.ifr_flags & IFF_RUNNING){
1126
break;
1127
}
1128
struct timespec sleeptime = { .tv_nsec = 250000000 };
1129
ret = nanosleep(&sleeptime, NULL);
1130
if(ret == -1 and errno != EINTR){
1131
perror("nanosleep");
1132
}
1133
}
1134
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1135
if(ret == -1){
1136
perror("close");
1137
}
1138
#ifdef __linux__
1139
if(restore_loglevel){
1140
/* Restores kernel loglevel to default */
1001
1141
ret = klogctl(7, NULL, 0);
1002
1142
if(ret == -1){
1003
1143
perror("klogctl");
1004
1144
}
1005
1145
}
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
1146
#endif /* __linux__ */
1147
}
1148
1149
uid = getuid();
1150
gid = getgid();
1151
1152
errno = 0;
1153
setgid(gid);
1154
if(ret == -1){
1155
perror("setgid");
1156
}
1157
1158
ret = setuid(uid);
1159
if(ret == -1){
1160
perror("setuid");
1161
}
1162
1163
ret = init_gnutls_global(pubkey, seckey);
1164
if(ret == -1){
1165
fprintf(stderr, "init_gnutls_global failed\n");
1166
exitcode = EXIT_FAILURE;
1167
goto end;
1168
} else {
1169
gnutls_initialized = true;
1170
}
1171
1172
if(mkdtemp(tempdir) == NULL){
1173
perror("mkdtemp");
1174
goto end;
1175
}
1176
tempdir_created = true;
1177
1178
if(not init_gpgme(pubkey, seckey, tempdir)){
1179
fprintf(stderr, "init_gpgme failed\n");
1180
exitcode = EXIT_FAILURE;
1181
goto end;
1182
} else {
1183
gpgme_initialized = true;
1184
}
1185
1186
if(interface[0] != '\0'){
1043
1187
if_index = (AvahiIfIndex) if_nametoindex(interface);
1044
1188
if(if_index == 0){
1045
1189
fprintf(stderr, "No such interface: \"%s\"\n", interface);
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
1190
exitcode = EXIT_FAILURE;
1191
goto end;
1192
}
1193
}
1194
1195
if(connect_to != NULL){
1196
/* Connect directly, do not use Zeroconf */
1197
/* (Mainly meant for debugging) */
1198
char *address = strrchr(connect_to, ':');
1199
if(address == NULL){
1200
fprintf(stderr, "No colon in address\n");
1201
exitcode = EXIT_FAILURE;
1202
goto end;
1203
}
1204
uint16_t port;
1205
errno = 0;
1206
tmpmax = strtoimax(address+1, &tmp, 10);
1207
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1208
or tmpmax != (uint16_t)tmpmax){
1209
fprintf(stderr, "Bad port number\n");
1210
exitcode = EXIT_FAILURE;
1211
goto end;
1212
}
1213
port = (uint16_t)tmpmax;
1214
*address = '\0';
1215
address = connect_to;
1216
/* Colon in address indicates IPv6 */
1217
int af;
1218
if(strchr(address, ':') != NULL){
1219
af = AF_INET6;
1220
} else {
1221
af = AF_INET;
1222
}
1223
ret = start_mandos_communication(address, port, if_index, af);
1224
if(ret < 0){
1225
exitcode = EXIT_FAILURE;
1226
} else {
1227
exitcode = EXIT_SUCCESS;
1228
}
1229
goto end;
1230
}
1231
1232
{
1233
AvahiServerConfig config;
1234
/* Do not publish any local Zeroconf records */
1235
avahi_server_config_init(&config);
1236
config.publish_hinfo = 0;
1237
config.publish_addresses = 0;
1238
config.publish_workstation = 0;
1239
config.publish_domain = 0;
1240
1241
/* Allocate a new server */
1242
mc.server = avahi_server_new(avahi_simple_poll_get
1243
(mc.simple_poll), &config, NULL,
1244
NULL, &error);
1245
1246
/* Free the Avahi configuration data */
1247
avahi_server_config_free(&config);
1248
}
1249
1250
/* Check if creating the Avahi server object succeeded */
1251
if(mc.server == NULL){
1252
fprintf(stderr, "Failed to create Avahi server: %s\n",
1253
avahi_strerror(error));
1254
exitcode = EXIT_FAILURE;
1255
goto end;
1256
}
1257
1258
/* Create the Avahi service browser */
1259
sb = avahi_s_service_browser_new(mc.server, if_index,
1260
AVAHI_PROTO_INET6, "_mandos._tcp",
1261
NULL, 0, browse_callback, NULL);
1262
if(sb == NULL){
1263
fprintf(stderr, "Failed to create service browser: %s\n",
1264
avahi_strerror(avahi_server_errno(mc.server)));
1265
exitcode = EXIT_FAILURE;
1266
goto end;
1267
}
1268
1269
/* Run the main loop */
1270
1271
if(debug){
1272
fprintf(stderr, "Starting Avahi loop search\n");
1273
}
1274
1275
avahi_simple_poll_loop(mc.simple_poll);
1276
1140
1277
end:
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;
1278
1279
if(debug){
1280
fprintf(stderr, "%s exiting\n", argv[0]);
1281
}
1282
1283
/* Cleanup things */
1284
if(sb != NULL)
1285
avahi_s_service_browser_free(sb);
1286
1287
if(mc.server != NULL)
1288
avahi_server_free(mc.server);
1289
1290
if(mc.simple_poll != NULL)
1291
avahi_simple_poll_free(mc.simple_poll);
1292
1293
if(gnutls_initialized){
1294
gnutls_certificate_free_credentials(mc.cred);
1295
gnutls_global_deinit();
1296
gnutls_dh_params_deinit(mc.dh_params);
1297
}
1298
1299
if(gpgme_initialized){
1300
gpgme_release(mc.ctx);
1301
}
1302
1303
/* Removes the temp directory used by GPGME */
1304
if(tempdir_created){
1305
DIR *d;
1306
struct dirent *direntry;
1307
d = opendir(tempdir);
1308
if(d == NULL){
1309
if(errno != ENOENT){
1310
perror("opendir");
1311
}
1312
} else {
1313
while(true){
1314
direntry = readdir(d);
1315
if(direntry == NULL){
1316
break;
1317
}
1318
/* Skip "." and ".." */
1319
if(direntry->d_name[0] == '.'
1320
and (direntry->d_name[1] == '\0'
1321
or (direntry->d_name[1] == '.'
1322
and direntry->d_name[2] == '\0'))){
1323
continue;
1324
}
1325
char *fullname = NULL;
1326
ret = asprintf(&fullname, "%s/%s", tempdir,
1327
direntry->d_name);
1328
if(ret < 0){
1329
perror("asprintf");
1330
continue;
1331
}
1332
ret = remove(fullname);
1333
if(ret == -1){
1334
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1335
strerror(errno));
1336
}
1337
free(fullname);
1338
}
1339
closedir(d);
1340
}
1341
ret = rmdir(tempdir);
1342
if(ret == -1 and errno != ENOENT){
1343
perror("rmdir");
1344
}
1345
}
1346
1347
return exitcode;
1206
1348
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0