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» Revision
237.2.71
(compared to revision 237.2.48)
: plugins.d/mandos-client.c
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- Committer: Teddy Hogeborn
- Date: 2009-02-09 19:26:19 UTC
- mto: (24.1.136 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-20090209192619-7rse82x9pypq4ihk
* plugin-runner.c: Comment change.
* plugins.d/mandos-client.c: Comment changes.
(quit_now): New global flag.
(handle_sigterm): Only call avahi_simple_poll_quit once.
(main): Also handle SIGINT and SIGHUP.
* plugins.d/mandos-client.c: Comment changes.
(quit_now): New global flag.
(handle_sigterm): Only call avahi_simple_poll_quit once.
(main): Also handle SIGINT and SIGHUP.
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, true */
45
#include <stdbool.h> /* bool, false, 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, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
51
SOCK_STREAM, uid_t, gid_t, open(),
52
opendir(), DIR */
54
53
#include <sys/stat.h> /* open() */
55
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
55
inet_pton(), connect() */
58
56
#include <fcntl.h> /* open() */
59
57
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
58
*/
61
59
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
60
#include <assert.h> /* assert() */
63
61
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* time() */
62
#include <time.h> /* nanosleep(), time() */
65
63
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
64
SIOCSIFFLAGS, if_indextoname(),
67
65
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
68
*/
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, and, or */
73
#include <iso646.h> /* not, or, and */
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(),
79
sigaction(), SIGTERM, sigaction,
80
sig_atomic_t */
81
82
#ifdef __linux__
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;
138
129
139
/*
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "buffer_capacity" is how much is currently allocated,
140
* Make additional room in "buffer" for at least BUFFER_SIZE more
141
* bytes. "buffer_capacity" is how much is currently allocated,
132
142
* "buffer_length" is how much is already used.
133
143
*/
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
144
size_t incbuffer(char **buffer, size_t buffer_length,
135
145
size_t buffer_capacity){
136
146
if(buffer_length + BUFFER_SIZE > buffer_capacity){
137
147
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
146
156
/*
147
157
* Initialize GPGME.
148
158
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
159
static bool init_gpgme(const char *seckey,
150
160
const char *pubkey, const char *tempdir){
151
161
int ret;
152
162
gpgme_error_t rc;
154
164
155
165
156
166
/*
157
* Helper function to insert pub and seckey to the enigne keyring.
167
* Helper function to insert pub and seckey to the engine keyring.
158
168
*/
159
169
bool import_key(const char *filename){
160
170
int fd;
173
183
return false;
174
184
}
175
185
176
rc = gpgme_op_import(mc->ctx, pgp_data);
186
rc = gpgme_op_import(mc.ctx, pgp_data);
177
187
if(rc != GPG_ERR_NO_ERROR){
178
188
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
189
gpgme_strsource(rc), gpgme_strerror(rc));
189
199
}
190
200
191
201
if(debug){
192
fprintf(stderr, "Initialize gpgme\n");
202
fprintf(stderr, "Initializing GPGME\n");
193
203
}
194
204
195
205
/* Init GPGME */
222
232
}
223
233
224
234
/* Create new GPGME "context" */
225
rc = gpgme_new(&(mc->ctx));
235
rc = gpgme_new(&(mc.ctx));
226
236
if(rc != GPG_ERR_NO_ERROR){
227
237
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
238
gpgme_strsource(rc), gpgme_strerror(rc));
240
250
* Decrypt OpenPGP data.
241
251
* Returns -1 on error
242
252
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
253
static ssize_t pgp_packet_decrypt(const char *cryptotext,
245
254
size_t crypto_size,
246
255
char **plaintext){
247
256
gpgme_data_t dh_crypto, dh_plain;
274
283
275
284
/* Decrypt data from the cryptotext data buffer to the plaintext
276
285
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
286
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
278
287
if(rc != GPG_ERR_NO_ERROR){
279
288
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
289
gpgme_strsource(rc), gpgme_strerror(rc));
281
290
plaintext_length = -1;
282
291
if(debug){
283
292
gpgme_decrypt_result_t result;
284
result = gpgme_op_decrypt_result(mc->ctx);
293
result = gpgme_op_decrypt_result(mc.ctx);
285
294
if(result == NULL){
286
295
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
296
} else {
323
332
324
333
*plaintext = NULL;
325
334
while(true){
326
plaintext_capacity = adjustbuffer(plaintext,
335
plaintext_capacity = incbuffer(plaintext,
327
336
(size_t)plaintext_length,
328
337
plaintext_capacity);
329
338
if(plaintext_capacity == 0){
330
perror("adjustbuffer");
339
perror("incbuffer");
331
340
plaintext_length = -1;
332
341
goto decrypt_end;
333
342
}
365
374
return plaintext_length;
366
375
}
367
376
368
static const char * safer_gnutls_strerror(int value) {
377
static const char * safer_gnutls_strerror(int value){
369
378
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
379
-Wunreachable-code */
371
380
if(ret == NULL)
379
388
fprintf(stderr, "GnuTLS: %s", string);
380
389
}
381
390
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
391
static int init_gnutls_global(const char *pubkeyfilename,
384
392
const char *seckeyfilename){
385
393
int ret;
386
394
389
397
}
390
398
391
399
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
400
if(ret != GNUTLS_E_SUCCESS){
393
401
fprintf(stderr, "GnuTLS global_init: %s\n",
394
402
safer_gnutls_strerror(ret));
395
403
return -1;
404
412
}
405
413
406
414
/* OpenPGP credentials */
407
gnutls_certificate_allocate_credentials(&mc->cred);
415
gnutls_certificate_allocate_credentials(&mc.cred);
408
416
if(ret != GNUTLS_E_SUCCESS){
409
417
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
410
* from
411
* -Wunreachable-code
412
*/
418
from
419
-Wunreachable-code
420
*/
413
421
safer_gnutls_strerror(ret));
414
422
gnutls_global_deinit();
415
423
return -1;
422
430
}
423
431
424
432
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
433
(mc.cred, pubkeyfilename, seckeyfilename,
426
434
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
435
if(ret != GNUTLS_E_SUCCESS){
428
436
fprintf(stderr,
429
437
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
438
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
434
442
}
435
443
436
444
/* GnuTLS server initialization */
437
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
445
ret = gnutls_dh_params_init(&mc.dh_params);
446
if(ret != GNUTLS_E_SUCCESS){
439
447
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
448
" %s\n", safer_gnutls_strerror(ret));
441
449
goto globalfail;
442
450
}
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
451
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
452
if(ret != GNUTLS_E_SUCCESS){
445
453
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
454
safer_gnutls_strerror(ret));
447
455
goto globalfail;
448
456
}
449
457
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
458
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
451
459
452
460
return 0;
453
461
454
462
globalfail:
455
463
456
gnutls_certificate_free_credentials(mc->cred);
464
gnutls_certificate_free_credentials(mc.cred);
457
465
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
466
gnutls_dh_params_deinit(mc.dh_params);
459
467
return -1;
460
468
}
461
469
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
470
static int init_gnutls_session(gnutls_session_t *session){
464
471
int ret;
465
472
/* GnuTLS session creation */
466
473
ret = gnutls_init(session, GNUTLS_SERVER);
471
478
472
479
{
473
480
const char *err;
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
481
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
482
if(ret != GNUTLS_E_SUCCESS){
476
483
fprintf(stderr, "Syntax error at: %s\n", err);
477
484
fprintf(stderr, "GnuTLS error: %s\n",
478
485
safer_gnutls_strerror(ret));
482
489
}
483
490
484
491
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
492
mc.cred);
493
if(ret != GNUTLS_E_SUCCESS){
487
494
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
495
safer_gnutls_strerror(ret));
489
496
gnutls_deinit(*session);
494
501
gnutls_certificate_server_set_request(*session,
495
502
GNUTLS_CERT_IGNORE);
496
503
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
504
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
498
505
499
506
return 0;
500
507
}
506
513
/* Called when a Mandos server is found */
507
514
static int start_mandos_communication(const char *ip, uint16_t port,
508
515
AvahiIfIndex if_index,
509
mandos_context *mc){
516
int af){
510
517
int ret, tcp_sd;
511
518
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
519
union {
520
struct sockaddr_in in;
521
struct sockaddr_in6 in6;
522
} to;
513
523
char *buffer = NULL;
514
524
char *decrypted_buffer;
515
525
size_t buffer_length = 0;
517
527
ssize_t decrypted_buffer_size;
518
528
size_t written;
519
529
int retval = 0;
520
char interface[IF_NAMESIZE];
521
530
gnutls_session_t session;
522
523
ret = init_gnutls_session(mc, &session);
531
int pf; /* Protocol family */
532
533
switch(af){
534
case AF_INET6:
535
pf = PF_INET6;
536
break;
537
case AF_INET:
538
pf = PF_INET;
539
break;
540
default:
541
fprintf(stderr, "Bad address family: %d\n", af);
542
return -1;
543
}
544
545
ret = init_gnutls_session(&session);
524
546
if(ret != 0){
525
547
return -1;
526
548
}
527
549
528
550
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
551
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
530
552
"\n", ip, port);
531
553
}
532
554
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
if(tcp_sd < 0) {
555
tcp_sd = socket(pf, SOCK_STREAM, 0);
556
if(tcp_sd < 0){
535
557
perror("socket");
536
558
return -1;
537
559
}
538
560
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
561
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);
562
if(af == AF_INET6){
563
to.in6.sin6_family = (uint16_t)af;
564
ret = inet_pton(af, ip, &to.in6.sin6_addr);
565
} else { /* IPv4 */
566
to.in.sin_family = (sa_family_t)af;
567
ret = inet_pton(af, ip, &to.in.sin_addr);
568
}
552
569
if(ret < 0 ){
553
570
perror("inet_pton");
554
571
return -1;
557
574
fprintf(stderr, "Bad address: %s\n", ip);
558
575
return -1;
559
576
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
577
if(af == AF_INET6){
578
to.in6.sin6_port = htons(port); /* Spurious warnings from
579
-Wconversion and
580
-Wunreachable-code */
581
582
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
583
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
584
-Wunreachable-code*/
585
if(if_index == AVAHI_IF_UNSPEC){
586
fprintf(stderr, "An IPv6 link-local address is incomplete"
587
" without a network interface\n");
588
return -1;
589
}
590
/* Set the network interface number as scope */
591
to.in6.sin6_scope_id = (uint32_t)if_index;
592
}
593
} else {
594
to.in.sin_port = htons(port); /* Spurious warnings from
561
595
-Wconversion and
562
596
-Wunreachable-code */
563
564
to.in6.sin6_scope_id = (uint32_t)if_index;
597
}
565
598
566
599
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){
600
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
601
char interface[IF_NAMESIZE];
602
if(if_indextoname((unsigned int)if_index, interface) == NULL){
603
perror("if_indextoname");
604
} else {
605
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
606
ip, interface, port);
607
}
608
} else {
609
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
610
port);
611
}
612
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
613
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
614
const char *pcret;
615
if(af == AF_INET6){
616
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
617
sizeof(addrstr));
618
} else {
619
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
620
sizeof(addrstr));
621
}
622
if(pcret == NULL){
572
623
perror("inet_ntop");
573
624
} else {
574
625
if(strcmp(addrstr, ip) != 0){
577
628
}
578
629
}
579
630
580
ret = connect(tcp_sd, &to.in, sizeof(to));
631
if(af == AF_INET6){
632
ret = connect(tcp_sd, &to.in6, sizeof(to));
633
} else {
634
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
635
}
581
636
if(ret < 0){
582
637
perror("connect");
583
638
return -1;
629
684
/* Read OpenPGP packet that contains the wanted password */
630
685
631
686
if(debug){
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
687
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
633
688
ip);
634
689
}
635
690
636
691
while(true){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
692
buffer_capacity = incbuffer(&buffer, buffer_length,
638
693
buffer_capacity);
639
694
if(buffer_capacity == 0){
640
perror("adjustbuffer");
695
perror("incbuffer");
641
696
retval = -1;
642
697
goto mandos_end;
643
698
}
682
737
gnutls_bye(session, GNUTLS_SHUT_RDWR);
683
738
684
739
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
740
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
741
buffer_length,
687
742
&decrypted_buffer);
688
743
if(decrypted_buffer_size >= 0){
723
778
724
779
static void resolve_callback(AvahiSServiceResolver *r,
725
780
AvahiIfIndex interface,
726
AVAHI_GCC_UNUSED AvahiProtocol protocol,
781
AvahiProtocol proto,
727
782
AvahiResolverEvent event,
728
783
const char *name,
729
784
const char *type,
734
789
AVAHI_GCC_UNUSED AvahiStringList *txt,
735
790
AVAHI_GCC_UNUSED AvahiLookupResultFlags
736
791
flags,
737
void* userdata) {
738
mandos_context *mc = userdata;
792
AVAHI_GCC_UNUSED void* userdata){
739
793
assert(r);
740
794
741
795
/* Called whenever a service has been resolved successfully or
742
796
timed out */
743
797
744
switch(event) {
798
switch(event){
745
799
default:
746
800
case AVAHI_RESOLVER_FAILURE:
747
801
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
748
802
" of type '%s' in domain '%s': %s\n", name, type, domain,
749
avahi_strerror(avahi_server_errno(mc->server)));
803
avahi_strerror(avahi_server_errno(mc.server)));
750
804
break;
751
805
752
806
case AVAHI_RESOLVER_FOUND:
758
812
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
813
ip, (intmax_t)interface, port);
760
814
}
761
int ret = start_mandos_communication(ip, port, interface, mc);
815
int ret = start_mandos_communication(ip, port, interface,
816
avahi_proto_to_af(proto));
762
817
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
818
avahi_simple_poll_quit(mc.simple_poll);
764
819
}
765
820
}
766
821
}
767
822
avahi_s_service_resolver_free(r);
768
823
}
769
824
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;
825
static void browse_callback(AvahiSServiceBrowser *b,
826
AvahiIfIndex interface,
827
AvahiProtocol protocol,
828
AvahiBrowserEvent event,
829
const char *name,
830
const char *type,
831
const char *domain,
832
AVAHI_GCC_UNUSED AvahiLookupResultFlags
833
flags,
834
AVAHI_GCC_UNUSED void* userdata){
781
835
assert(b);
782
836
783
837
/* Called whenever a new services becomes available on the LAN or
784
838
is removed from the LAN */
785
839
786
switch(event) {
840
switch(event){
787
841
default:
788
842
case AVAHI_BROWSER_FAILURE:
789
843
790
844
fprintf(stderr, "(Avahi browser) %s\n",
791
avahi_strerror(avahi_server_errno(mc->server)));
792
avahi_simple_poll_quit(mc->simple_poll);
845
avahi_strerror(avahi_server_errno(mc.server)));
846
avahi_simple_poll_quit(mc.simple_poll);
793
847
return;
794
848
795
849
case AVAHI_BROWSER_NEW:
798
852
the callback function is called the Avahi server will free the
799
853
resolver for us. */
800
854
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
855
if(!(avahi_s_service_resolver_new(mc.server, interface,
802
856
protocol, name, type, domain,
803
857
AVAHI_PROTO_INET6, 0,
804
resolve_callback, mc)))
858
resolve_callback, NULL)))
805
859
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
806
name, avahi_strerror(avahi_server_errno(mc->server)));
860
name, avahi_strerror(avahi_server_errno(mc.server)));
807
861
break;
808
862
809
863
case AVAHI_BROWSER_REMOVE:
818
872
}
819
873
}
820
874
875
sig_atomic_t quit_now = 0;
876
877
static void handle_sigterm(__attribute__((unused)) int sig){
878
if(quit_now){
879
return;
880
}
881
quit_now = 1;
882
int old_errno = errno;
883
if(mc.simple_poll != NULL){
884
avahi_simple_poll_quit(mc.simple_poll);
885
}
886
errno = old_errno;
887
}
888
821
889
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_initialized = false;
843
bool gpgme_initialized = false;
844
845
{
846
struct argp_option options[] = {
847
{ .name = "debug", .key = 128,
848
.doc = "Debug mode", .group = 3 },
849
{ .name = "connect", .key = 'c',
850
.arg = "ADDRESS:PORT",
851
.doc = "Connect directly to a specific Mandos server",
852
.group = 1 },
853
{ .name = "interface", .key = 'i',
854
.arg = "NAME",
855
.doc = "Interface that will be used to search for Mandos"
856
" servers",
857
.group = 1 },
858
{ .name = "seckey", .key = 's',
859
.arg = "FILE",
860
.doc = "OpenPGP secret key file base name",
861
.group = 1 },
862
{ .name = "pubkey", .key = 'p',
863
.arg = "FILE",
864
.doc = "OpenPGP public key file base name",
865
.group = 2 },
866
{ .name = "dh-bits", .key = 129,
867
.arg = "BITS",
868
.doc = "Bit length of the prime number used in the"
869
" Diffie-Hellman key exchange",
870
.group = 2 },
871
{ .name = "priority", .key = 130,
872
.arg = "STRING",
873
.doc = "GnuTLS priority string for the TLS handshake",
874
.group = 1 },
875
{ .name = NULL }
876
};
877
878
error_t parse_opt(int key, char *arg,
879
struct argp_state *state) {
880
switch(key) {
881
case 128: /* --debug */
882
debug = true;
883
break;
884
case 'c': /* --connect */
885
connect_to = arg;
886
break;
887
case 'i': /* --interface */
888
interface = arg;
889
break;
890
case 's': /* --seckey */
891
seckey = arg;
892
break;
893
case 'p': /* --pubkey */
894
pubkey = arg;
895
break;
896
case 129: /* --dh-bits */
897
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
898
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
899
or arg[numchars] != '\0'){
900
fprintf(stderr, "Bad number of DH bits\n");
901
exit(EXIT_FAILURE);
890
AvahiSServiceBrowser *sb = NULL;
891
int error;
892
int ret;
893
intmax_t tmpmax;
894
int numchars;
895
int exitcode = EXIT_SUCCESS;
896
const char *interface = "eth0";
897
struct ifreq network;
898
int sd;
899
uid_t uid;
900
gid_t gid;
901
char *connect_to = NULL;
902
char tempdir[] = "/tmp/mandosXXXXXX";
903
bool tempdir_created = false;
904
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
905
const char *seckey = PATHDIR "/" SECKEY;
906
const char *pubkey = PATHDIR "/" PUBKEY;
907
908
/* Initialize Mandos context */
909
mc = (mandos_context){ .simple_poll = NULL, .server = NULL,
910
.dh_bits = 1024, .priority = "SECURE256"
911
":!CTYPE-X.509:+CTYPE-OPENPGP" };
912
bool gnutls_initialized = false;
913
bool gpgme_initialized = false;
914
double delay = 2.5;
915
916
struct sigaction old_sigterm_action;
917
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
918
919
{
920
struct argp_option options[] = {
921
{ .name = "debug", .key = 128,
922
.doc = "Debug mode", .group = 3 },
923
{ .name = "connect", .key = 'c',
924
.arg = "ADDRESS:PORT",
925
.doc = "Connect directly to a specific Mandos server",
926
.group = 1 },
927
{ .name = "interface", .key = 'i',
928
.arg = "NAME",
929
.doc = "Network interface that will be used to search for"
930
" Mandos servers",
931
.group = 1 },
932
{ .name = "seckey", .key = 's',
933
.arg = "FILE",
934
.doc = "OpenPGP secret key file base name",
935
.group = 1 },
936
{ .name = "pubkey", .key = 'p',
937
.arg = "FILE",
938
.doc = "OpenPGP public key file base name",
939
.group = 2 },
940
{ .name = "dh-bits", .key = 129,
941
.arg = "BITS",
942
.doc = "Bit length of the prime number used in the"
943
" Diffie-Hellman key exchange",
944
.group = 2 },
945
{ .name = "priority", .key = 130,
946
.arg = "STRING",
947
.doc = "GnuTLS priority string for the TLS handshake",
948
.group = 1 },
949
{ .name = "delay", .key = 131,
950
.arg = "SECONDS",
951
.doc = "Maximum delay to wait for interface startup",
952
.group = 2 },
953
{ .name = NULL }
954
};
955
956
error_t parse_opt(int key, char *arg,
957
struct argp_state *state){
958
switch(key){
959
case 128: /* --debug */
960
debug = true;
961
break;
962
case 'c': /* --connect */
963
connect_to = arg;
964
break;
965
case 'i': /* --interface */
966
interface = arg;
967
break;
968
case 's': /* --seckey */
969
seckey = arg;
970
break;
971
case 'p': /* --pubkey */
972
pubkey = arg;
973
break;
974
case 129: /* --dh-bits */
975
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
976
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
977
or arg[numchars] != '\0'){
978
fprintf(stderr, "Bad number of DH bits\n");
979
exit(EXIT_FAILURE);
980
}
981
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
982
break;
983
case 130: /* --priority */
984
mc.priority = arg;
985
break;
986
case 131: /* --delay */
987
ret = sscanf(arg, "%lf%n", &delay, &numchars);
988
if(ret < 1 or arg[numchars] != '\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 the interface is down, bring it up */
1016
if(interface[0] != '\0'){
1017
#ifdef __linux__
1018
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1019
messages to mess up the prompt */
1020
ret = klogctl(8, NULL, 5);
1021
bool restore_loglevel = true;
1022
if(ret == -1){
1023
restore_loglevel = false;
1024
perror("klogctl");
1025
}
1026
#endif /* __linux__ */
1027
1028
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1029
if(sd < 0){
1030
perror("socket");
1031
exitcode = EXIT_FAILURE;
1032
#ifdef __linux__
1033
if(restore_loglevel){
1034
ret = klogctl(7, NULL, 0);
1035
if(ret == -1){
1036
perror("klogctl");
1037
}
1038
}
1039
#endif /* __linux__ */
1040
goto end;
1041
}
1042
strcpy(network.ifr_name, interface);
1043
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1044
if(ret == -1){
1045
perror("ioctl SIOCGIFFLAGS");
1046
#ifdef __linux__
1047
if(restore_loglevel){
1048
ret = klogctl(7, NULL, 0);
1049
if(ret == -1){
1050
perror("klogctl");
1051
}
1052
}
1053
#endif /* __linux__ */
1054
exitcode = EXIT_FAILURE;
1055
goto end;
1056
}
1057
if((network.ifr_flags & IFF_UP) == 0){
1058
network.ifr_flags |= IFF_UP;
1059
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1060
if(ret == -1){
1061
perror("ioctl SIOCSIFFLAGS");
1062
exitcode = EXIT_FAILURE;
1063
#ifdef __linux__
1064
if(restore_loglevel){
1065
ret = klogctl(7, NULL, 0);
1066
if(ret == -1){
1067
perror("klogctl");
902
1068
}
903
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
904
break;
905
case 130: /* --priority */
906
mc.priority = arg;
907
break;
908
case ARGP_KEY_ARG:
909
argp_usage(state);
910
case ARGP_KEY_END:
911
break;
912
default:
913
return ARGP_ERR_UNKNOWN;
914
1069
}
915
return 0;
916
}
917
918
struct argp argp = { .options = options, .parser = parse_opt,
919
.args_doc = "",
920
.doc = "Mandos client -- Get and decrypt"
921
" passwords from a Mandos server" };
922
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
923
if(ret == ARGP_ERR_UNKNOWN){
924
fprintf(stderr, "Unknown error while parsing arguments\n");
925
exitcode = EXIT_FAILURE;
1070
#endif /* __linux__ */
926
1071
goto end;
927
1072
}
928
1073
}
929
930
/* If the interface is down, bring it up */
931
{
932
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
933
if(sd < 0) {
934
perror("socket");
935
exitcode = EXIT_FAILURE;
936
goto end;
937
}
938
strcpy(network.ifr_name, interface);
1074
/* sleep checking until interface is running */
1075
for(int i=0; i < delay * 4; i++){
939
1076
ret = ioctl(sd, SIOCGIFFLAGS, &network);
940
1077
if(ret == -1){
941
1078
perror("ioctl SIOCGIFFLAGS");
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
if((network.ifr_flags & IFF_UP) == 0){
946
network.ifr_flags |= IFF_UP;
947
ret = ioctl(sd, SIOCSIFFLAGS, &network);
948
if(ret == -1){
949
perror("ioctl SIOCSIFFLAGS");
950
exitcode = EXIT_FAILURE;
951
goto end;
952
}
953
}
954
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1079
} else if(network.ifr_flags & IFF_RUNNING){
1080
break;
1081
}
1082
struct timespec sleeptime = { .tv_nsec = 250000000 };
1083
ret = nanosleep(&sleeptime, NULL);
1084
if(ret == -1 and errno != EINTR){
1085
perror("nanosleep");
1086
}
1087
}
1088
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1089
if(ret == -1){
1090
perror("close");
1091
}
1092
#ifdef __linux__
1093
if(restore_loglevel){
1094
/* Restores kernel loglevel to default */
1095
ret = klogctl(7, NULL, 0);
955
1096
if(ret == -1){
956
perror("close");
1097
perror("klogctl");
957
1098
}
958
1099
}
959
960
uid = getuid();
961
gid = getgid();
962
963
ret = setuid(uid);
964
if(ret == -1){
965
perror("setuid");
966
}
967
968
setgid(gid);
969
if(ret == -1){
970
perror("setgid");
971
}
972
973
ret = init_gnutls_global(&mc, pubkey, seckey);
974
if(ret == -1){
975
fprintf(stderr, "init_gnutls_global failed\n");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
} else {
979
gnutls_initialized = true;
980
}
981
982
if(mkdtemp(tempdir) == NULL){
983
perror("mkdtemp");
984
tempdir[0] = '\0';
985
goto end;
986
}
987
988
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
989
fprintf(stderr, "init_gpgme failed\n");
990
exitcode = EXIT_FAILURE;
991
goto end;
992
} else {
993
gpgme_initialized = true;
994
}
995
1100
#endif /* __linux__ */
1101
}
1102
1103
uid = getuid();
1104
gid = getgid();
1105
1106
errno = 0;
1107
setgid(gid);
1108
if(ret == -1){
1109
perror("setgid");
1110
}
1111
1112
ret = setuid(uid);
1113
if(ret == -1){
1114
perror("setuid");
1115
}
1116
1117
ret = init_gnutls_global(pubkey, seckey);
1118
if(ret == -1){
1119
fprintf(stderr, "init_gnutls_global failed\n");
1120
exitcode = EXIT_FAILURE;
1121
goto end;
1122
} else {
1123
gnutls_initialized = true;
1124
}
1125
1126
if(mkdtemp(tempdir) == NULL){
1127
perror("mkdtemp");
1128
goto end;
1129
}
1130
tempdir_created = true;
1131
1132
if(not init_gpgme(pubkey, seckey, tempdir)){
1133
fprintf(stderr, "init_gpgme failed\n");
1134
exitcode = EXIT_FAILURE;
1135
goto end;
1136
} else {
1137
gpgme_initialized = true;
1138
}
1139
1140
if(interface[0] != '\0'){
996
1141
if_index = (AvahiIfIndex) if_nametoindex(interface);
997
1142
if(if_index == 0){
998
1143
fprintf(stderr, "No such interface: \"%s\"\n", interface);
999
exit(EXIT_FAILURE);
1000
}
1001
1002
if(connect_to != NULL){
1003
/* Connect directly, do not use Zeroconf */
1004
/* (Mainly meant for debugging) */
1005
char *address = strrchr(connect_to, ':');
1006
if(address == NULL){
1007
fprintf(stderr, "No colon in address\n");
1008
exitcode = EXIT_FAILURE;
1009
goto end;
1010
}
1011
uint16_t port;
1012
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1013
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1014
or address[numchars+1] != '\0'){
1015
fprintf(stderr, "Bad port number\n");
1016
exitcode = EXIT_FAILURE;
1017
goto end;
1018
}
1019
port = (uint16_t)tmpmax;
1020
*address = '\0';
1021
address = connect_to;
1022
ret = start_mandos_communication(address, port, if_index, &mc);
1023
if(ret < 0){
1024
exitcode = EXIT_FAILURE;
1025
} else {
1026
exitcode = EXIT_SUCCESS;
1027
}
1028
goto end;
1029
}
1030
1031
if(not debug){
1032
avahi_set_log_function(empty_log);
1033
}
1034
1035
/* Initialize the pseudo-RNG for Avahi */
1036
srand((unsigned int) time(NULL));
1037
1038
/* Allocate main Avahi loop object */
1039
mc.simple_poll = avahi_simple_poll_new();
1040
if(mc.simple_poll == NULL) {
1041
fprintf(stderr, "Avahi: Failed to create simple poll"
1042
" object.\n");
1043
exitcode = EXIT_FAILURE;
1044
goto end;
1045
}
1046
1047
{
1048
AvahiServerConfig config;
1049
/* Do not publish any local Zeroconf records */
1050
avahi_server_config_init(&config);
1051
config.publish_hinfo = 0;
1052
config.publish_addresses = 0;
1053
config.publish_workstation = 0;
1054
config.publish_domain = 0;
1055
1056
/* Allocate a new server */
1057
mc.server = avahi_server_new(avahi_simple_poll_get
1058
(mc.simple_poll), &config, NULL,
1059
NULL, &error);
1060
1061
/* Free the Avahi configuration data */
1062
avahi_server_config_free(&config);
1063
}
1064
1065
/* Check if creating the Avahi server object succeeded */
1066
if(mc.server == NULL) {
1067
fprintf(stderr, "Failed to create Avahi server: %s\n",
1068
avahi_strerror(error));
1069
exitcode = EXIT_FAILURE;
1070
goto end;
1071
}
1072
1073
/* Create the Avahi service browser */
1074
sb = avahi_s_service_browser_new(mc.server, if_index,
1075
AVAHI_PROTO_INET6,
1076
"_mandos._tcp", NULL, 0,
1077
browse_callback, &mc);
1078
if(sb == NULL) {
1079
fprintf(stderr, "Failed to create service browser: %s\n",
1080
avahi_strerror(avahi_server_errno(mc.server)));
1081
exitcode = EXIT_FAILURE;
1082
goto end;
1083
}
1084
1085
/* Run the main loop */
1086
1087
if(debug){
1088
fprintf(stderr, "Starting Avahi loop search\n");
1089
}
1090
1091
avahi_simple_poll_loop(mc.simple_poll);
1092
1144
exitcode = EXIT_FAILURE;
1145
goto end;
1146
}
1147
}
1148
1149
if(connect_to != NULL){
1150
/* Connect directly, do not use Zeroconf */
1151
/* (Mainly meant for debugging) */
1152
char *address = strrchr(connect_to, ':');
1153
if(address == NULL){
1154
fprintf(stderr, "No colon in address\n");
1155
exitcode = EXIT_FAILURE;
1156
goto end;
1157
}
1158
uint16_t port;
1159
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1160
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1161
or address[numchars+1] != '\0'){
1162
fprintf(stderr, "Bad port number\n");
1163
exitcode = EXIT_FAILURE;
1164
goto end;
1165
}
1166
port = (uint16_t)tmpmax;
1167
*address = '\0';
1168
address = connect_to;
1169
/* Colon in address indicates IPv6 */
1170
int af;
1171
if(strchr(address, ':') != NULL){
1172
af = AF_INET6;
1173
} else {
1174
af = AF_INET;
1175
}
1176
ret = start_mandos_communication(address, port, if_index, af);
1177
if(ret < 0){
1178
exitcode = EXIT_FAILURE;
1179
} else {
1180
exitcode = EXIT_SUCCESS;
1181
}
1182
goto end;
1183
}
1184
1185
if(not debug){
1186
avahi_set_log_function(empty_log);
1187
}
1188
1189
/* Initialize the pseudo-RNG for Avahi */
1190
srand((unsigned int) time(NULL));
1191
1192
/* Allocate main Avahi loop object */
1193
mc.simple_poll = avahi_simple_poll_new();
1194
if(mc.simple_poll == NULL){
1195
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1196
exitcode = EXIT_FAILURE;
1197
goto end;
1198
}
1199
1200
{
1201
AvahiServerConfig config;
1202
/* Do not publish any local Zeroconf records */
1203
avahi_server_config_init(&config);
1204
config.publish_hinfo = 0;
1205
config.publish_addresses = 0;
1206
config.publish_workstation = 0;
1207
config.publish_domain = 0;
1208
1209
/* Allocate a new server */
1210
mc.server = avahi_server_new(avahi_simple_poll_get
1211
(mc.simple_poll), &config, NULL,
1212
NULL, &error);
1213
1214
/* Free the Avahi configuration data */
1215
avahi_server_config_free(&config);
1216
}
1217
1218
/* Check if creating the Avahi server object succeeded */
1219
if(mc.server == NULL){
1220
fprintf(stderr, "Failed to create Avahi server: %s\n",
1221
avahi_strerror(error));
1222
exitcode = EXIT_FAILURE;
1223
goto end;
1224
}
1225
1226
/* Create the Avahi service browser */
1227
sb = avahi_s_service_browser_new(mc.server, if_index,
1228
AVAHI_PROTO_INET6, "_mandos._tcp",
1229
NULL, 0, browse_callback, NULL);
1230
if(sb == NULL){
1231
fprintf(stderr, "Failed to create service browser: %s\n",
1232
avahi_strerror(avahi_server_errno(mc.server)));
1233
exitcode = EXIT_FAILURE;
1234
goto end;
1235
}
1236
1237
sigemptyset(&sigterm_action.sa_mask);
1238
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1239
if(ret == -1){
1240
perror("sigaddset");
1241
exitcode = EXIT_FAILURE;
1242
goto end;
1243
}
1244
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1245
if(ret == -1){
1246
perror("sigaddset");
1247
exitcode = EXIT_FAILURE;
1248
goto end;
1249
}
1250
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1251
if(ret == -1){
1252
perror("sigaddset");
1253
exitcode = EXIT_FAILURE;
1254
goto end;
1255
}
1256
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1257
if(ret == -1){
1258
perror("sigaction");
1259
exitcode = EXIT_FAILURE;
1260
goto end;
1261
}
1262
1263
/* Run the main loop */
1264
1265
if(debug){
1266
fprintf(stderr, "Starting Avahi loop search\n");
1267
}
1268
1269
avahi_simple_poll_loop(mc.simple_poll);
1270
1093
1271
end:
1094
1095
if(debug){
1096
fprintf(stderr, "%s exiting\n", argv[0]);
1097
}
1098
1099
/* Cleanup things */
1100
if(sb != NULL)
1101
avahi_s_service_browser_free(sb);
1102
1103
if(mc.server != NULL)
1104
avahi_server_free(mc.server);
1105
1106
if(mc.simple_poll != NULL)
1107
avahi_simple_poll_free(mc.simple_poll);
1108
1109
if(gnutls_initialized){
1110
gnutls_certificate_free_credentials(mc.cred);
1111
gnutls_global_deinit();
1112
gnutls_dh_params_deinit(mc.dh_params);
1113
}
1114
1115
if(gpgme_initialized){
1116
gpgme_release(mc.ctx);
1117
}
1118
1119
/* Removes the temp directory used by GPGME */
1120
if(tempdir[0] != '\0'){
1121
DIR *d;
1122
struct dirent *direntry;
1123
d = opendir(tempdir);
1124
if(d == NULL){
1125
if(errno != ENOENT){
1126
perror("opendir");
1127
}
1128
} else {
1129
while(true){
1130
direntry = readdir(d);
1131
if(direntry == NULL){
1132
break;
1133
}
1134
/* Skip "." and ".." */
1135
if(direntry->d_name[0] == '.'
1136
and (direntry->d_name[1] == '\0'
1137
or (direntry->d_name[1] == '.'
1138
and direntry->d_name[2] == '\0'))){
1139
continue;
1140
}
1141
char *fullname = NULL;
1142
ret = asprintf(&fullname, "%s/%s", tempdir,
1143
direntry->d_name);
1144
if(ret < 0){
1145
perror("asprintf");
1146
continue;
1147
}
1148
ret = remove(fullname);
1149
if(ret == -1){
1150
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1151
strerror(errno));
1152
}
1153
free(fullname);
1154
}
1155
closedir(d);
1156
}
1157
ret = rmdir(tempdir);
1158
if(ret == -1 and errno != ENOENT){
1159
perror("rmdir");
1160
}
1161
}
1162
1163
return exitcode;
1272
1273
if(debug){
1274
fprintf(stderr, "%s exiting\n", argv[0]);
1275
}
1276
1277
/* Cleanup things */
1278
if(sb != NULL)
1279
avahi_s_service_browser_free(sb);
1280
1281
if(mc.server != NULL)
1282
avahi_server_free(mc.server);
1283
1284
if(mc.simple_poll != NULL)
1285
avahi_simple_poll_free(mc.simple_poll);
1286
1287
if(gnutls_initialized){
1288
gnutls_certificate_free_credentials(mc.cred);
1289
gnutls_global_deinit();
1290
gnutls_dh_params_deinit(mc.dh_params);
1291
}
1292
1293
if(gpgme_initialized){
1294
gpgme_release(mc.ctx);
1295
}
1296
1297
/* Removes the temp directory used by GPGME */
1298
if(tempdir_created){
1299
DIR *d;
1300
struct dirent *direntry;
1301
d = opendir(tempdir);
1302
if(d == NULL){
1303
if(errno != ENOENT){
1304
perror("opendir");
1305
}
1306
} else {
1307
while(true){
1308
direntry = readdir(d);
1309
if(direntry == NULL){
1310
break;
1311
}
1312
/* Skip "." and ".." */
1313
if(direntry->d_name[0] == '.'
1314
and (direntry->d_name[1] == '\0'
1315
or (direntry->d_name[1] == '.'
1316
and direntry->d_name[2] == '\0'))){
1317
continue;
1318
}
1319
char *fullname = NULL;
1320
ret = asprintf(&fullname, "%s/%s", tempdir,
1321
direntry->d_name);
1322
if(ret < 0){
1323
perror("asprintf");
1324
continue;
1325
}
1326
ret = remove(fullname);
1327
if(ret == -1){
1328
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1329
strerror(errno));
1330
}
1331
free(fullname);
1332
}
1333
closedir(d);
1334
}
1335
ret = rmdir(tempdir);
1336
if(ret == -1 and errno != ENOENT){
1337
perror("rmdir");
1338
}
1339
}
1340
1341
return exitcode;
1164
1342
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0