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237.2.55
(compared to revision 24.1.136)
: plugins.d/mandos-client.c
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- Committer: Teddy Hogeborn
- Date: 2009-02-03 22:41:49 UTC
- mto: (24.1.131 mandos) (237.4.2 mandos-pipe-ipc) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: teddy@fukt.bsnet.se-20090203224149-fc1301jojmusbzlx
* Makefile (run-server): Use "--no-dbus" unconditionally.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
added
removed
plugins.d/mandos-client.c
42
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
44
srand() */
45
#include <stdbool.h> /* bool, false, true */
45
#include <stdbool.h> /* bool, true */
46
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/ioctl.h> /* ioctl */
49
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, uid_t, gid_t, open(),
52
opendir(), DIR */
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
53
54
#include <sys/stat.h> /* open() */
54
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
inet_pton(), connect() */
56
struct in6_addr, inet_pton(),
57
connect() */
56
58
#include <fcntl.h> /* open() */
57
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
58
60
*/
63
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
66
SIOCSIFFLAGS, if_indextoname(),
65
67
if_nametoindex(), IF_NAMESIZE */
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
68
*/
68
#include <netinet/in.h>
69
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
70
getuid(), getgid(), setuid(),
71
71
setgid() */
72
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, or, and */
73
#include <iso646.h> /* not, and, or */
74
74
#include <argp.h> /* struct argp_option, error_t, struct
75
75
argp_state, struct argp,
76
76
argp_parse(), ARGP_KEY_ARG,
77
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <signal.h> /* sigemptyset(), sigaddset(),
79
sigaction(), SIGTERM, sigaction,
80
sig_atomic_t */
81
82
#ifdef __linux__
83
78
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
85
79
86
80
/* Avahi */
87
81
/* All Avahi types, constants and functions
133
127
gpgme_ctx_t ctx;
134
128
} mandos_context;
135
129
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
130
/*
142
* Make additional room in "buffer" for at least BUFFER_SIZE more
143
* bytes. "buffer_capacity" is how much is currently allocated,
131
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
132
* "buffer_capacity" is how much is currently allocated,
144
133
* "buffer_length" is how much is already used.
145
134
*/
146
size_t incbuffer(char **buffer, size_t buffer_length,
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
147
136
size_t buffer_capacity){
148
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
149
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
147
/*
159
148
* Initialize GPGME.
160
149
*/
161
static bool init_gpgme(const char *seckey,
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
162
151
const char *pubkey, const char *tempdir){
163
152
int ret;
164
153
gpgme_error_t rc;
185
174
return false;
186
175
}
187
176
188
rc = gpgme_op_import(mc.ctx, pgp_data);
177
rc = gpgme_op_import(mc->ctx, pgp_data);
189
178
if(rc != GPG_ERR_NO_ERROR){
190
179
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
191
180
gpgme_strsource(rc), gpgme_strerror(rc));
201
190
}
202
191
203
192
if(debug){
204
fprintf(stderr, "Initializing GPGME\n");
193
fprintf(stderr, "Initialize gpgme\n");
205
194
}
206
195
207
196
/* Init GPGME */
234
223
}
235
224
236
225
/* Create new GPGME "context" */
237
rc = gpgme_new(&(mc.ctx));
226
rc = gpgme_new(&(mc->ctx));
238
227
if(rc != GPG_ERR_NO_ERROR){
239
228
fprintf(stderr, "bad gpgme_new: %s: %s\n",
240
229
gpgme_strsource(rc), gpgme_strerror(rc));
252
241
* Decrypt OpenPGP data.
253
242
* Returns -1 on error
254
243
*/
255
static ssize_t pgp_packet_decrypt(const char *cryptotext,
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
256
246
size_t crypto_size,
257
247
char **plaintext){
258
248
gpgme_data_t dh_crypto, dh_plain;
285
275
286
276
/* Decrypt data from the cryptotext data buffer to the plaintext
287
277
data buffer */
288
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
289
279
if(rc != GPG_ERR_NO_ERROR){
290
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
291
281
gpgme_strsource(rc), gpgme_strerror(rc));
292
282
plaintext_length = -1;
293
283
if(debug){
294
284
gpgme_decrypt_result_t result;
295
result = gpgme_op_decrypt_result(mc.ctx);
285
result = gpgme_op_decrypt_result(mc->ctx);
296
286
if(result == NULL){
297
287
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
298
288
} else {
334
324
335
325
*plaintext = NULL;
336
326
while(true){
337
plaintext_capacity = incbuffer(plaintext,
327
plaintext_capacity = adjustbuffer(plaintext,
338
328
(size_t)plaintext_length,
339
329
plaintext_capacity);
340
330
if(plaintext_capacity == 0){
341
perror("incbuffer");
331
perror("adjustbuffer");
342
332
plaintext_length = -1;
343
333
goto decrypt_end;
344
334
}
376
366
return plaintext_length;
377
367
}
378
368
379
static const char * safer_gnutls_strerror(int value){
369
static const char * safer_gnutls_strerror(int value) {
380
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
381
371
-Wunreachable-code */
382
372
if(ret == NULL)
390
380
fprintf(stderr, "GnuTLS: %s", string);
391
381
}
392
382
393
static int init_gnutls_global(const char *pubkeyfilename,
383
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
394
385
const char *seckeyfilename){
395
386
int ret;
396
387
399
390
}
400
391
401
392
ret = gnutls_global_init();
402
if(ret != GNUTLS_E_SUCCESS){
393
if(ret != GNUTLS_E_SUCCESS) {
403
394
fprintf(stderr, "GnuTLS global_init: %s\n",
404
395
safer_gnutls_strerror(ret));
405
396
return -1;
414
405
}
415
406
416
407
/* OpenPGP credentials */
417
gnutls_certificate_allocate_credentials(&mc.cred);
408
gnutls_certificate_allocate_credentials(&mc->cred);
418
409
if(ret != GNUTLS_E_SUCCESS){
419
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
420
from
421
-Wunreachable-code
422
*/
411
* from
412
* -Wunreachable-code
413
*/
423
414
safer_gnutls_strerror(ret));
424
415
gnutls_global_deinit();
425
416
return -1;
432
423
}
433
424
434
425
ret = gnutls_certificate_set_openpgp_key_file
435
(mc.cred, pubkeyfilename, seckeyfilename,
426
(mc->cred, pubkeyfilename, seckeyfilename,
436
427
GNUTLS_OPENPGP_FMT_BASE64);
437
if(ret != GNUTLS_E_SUCCESS){
428
if(ret != GNUTLS_E_SUCCESS) {
438
429
fprintf(stderr,
439
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
440
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
444
435
}
445
436
446
437
/* GnuTLS server initialization */
447
ret = gnutls_dh_params_init(&mc.dh_params);
448
if(ret != GNUTLS_E_SUCCESS){
438
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
449
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
450
441
" %s\n", safer_gnutls_strerror(ret));
451
442
goto globalfail;
452
443
}
453
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
454
if(ret != GNUTLS_E_SUCCESS){
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
455
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
456
447
safer_gnutls_strerror(ret));
457
448
goto globalfail;
458
449
}
459
450
460
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
461
452
462
453
return 0;
463
454
464
455
globalfail:
465
456
466
gnutls_certificate_free_credentials(mc.cred);
457
gnutls_certificate_free_credentials(mc->cred);
467
458
gnutls_global_deinit();
468
gnutls_dh_params_deinit(mc.dh_params);
459
gnutls_dh_params_deinit(mc->dh_params);
469
460
return -1;
470
461
}
471
462
472
static int init_gnutls_session(gnutls_session_t *session){
463
static int init_gnutls_session(mandos_context *mc,
464
gnutls_session_t *session){
473
465
int ret;
474
466
/* GnuTLS session creation */
475
467
ret = gnutls_init(session, GNUTLS_SERVER);
480
472
481
473
{
482
474
const char *err;
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
484
if(ret != GNUTLS_E_SUCCESS){
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
485
477
fprintf(stderr, "Syntax error at: %s\n", err);
486
478
fprintf(stderr, "GnuTLS error: %s\n",
487
479
safer_gnutls_strerror(ret));
491
483
}
492
484
493
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
494
mc.cred);
495
if(ret != GNUTLS_E_SUCCESS){
486
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
496
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
497
489
safer_gnutls_strerror(ret));
498
490
gnutls_deinit(*session);
503
495
gnutls_certificate_server_set_request(*session,
504
496
GNUTLS_CERT_IGNORE);
505
497
506
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
507
499
508
500
return 0;
509
501
}
515
507
/* Called when a Mandos server is found */
516
508
static int start_mandos_communication(const char *ip, uint16_t port,
517
509
AvahiIfIndex if_index,
518
int af){
510
mandos_context *mc){
519
511
int ret, tcp_sd;
520
512
ssize_t sret;
521
union {
522
struct sockaddr_in in;
523
struct sockaddr_in6 in6;
524
} to;
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
525
514
char *buffer = NULL;
526
515
char *decrypted_buffer;
527
516
size_t buffer_length = 0;
529
518
ssize_t decrypted_buffer_size;
530
519
size_t written;
531
520
int retval = 0;
521
char interface[IF_NAMESIZE];
532
522
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);
523
524
ret = init_gnutls_session(mc, &session);
548
525
if(ret != 0){
549
526
return -1;
550
527
}
551
528
552
529
if(debug){
553
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
554
531
"\n", ip, port);
555
532
}
556
533
557
tcp_sd = socket(pf, SOCK_STREAM, 0);
558
if(tcp_sd < 0){
534
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
if(tcp_sd < 0) {
559
536
perror("socket");
560
537
return -1;
561
538
}
562
539
540
if(debug){
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
542
perror("if_indextoname");
543
return -1;
544
}
545
fprintf(stderr, "Binding to interface %s\n", interface);
546
}
547
563
548
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
}
549
to.in6.sin6_family = AF_INET6;
550
/* It would be nice to have a way to detect if we were passed an
551
IPv4 address here. Now we assume an IPv6 address. */
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
571
553
if(ret < 0 ){
572
554
perror("inet_pton");
573
555
return -1;
576
558
fprintf(stderr, "Bad address: %s\n", ip);
577
559
return -1;
578
560
}
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
to.in6.sin6_port = htons(port); /* Spurious warnings from
597
562
-Wconversion and
598
563
-Wunreachable-code */
599
}
564
565
to.in6.sin6_scope_id = (uint32_t)if_index;
600
566
601
567
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){
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
570
char addrstr[INET6_ADDRSTRLEN] = "";
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
572
sizeof(addrstr)) == NULL){
625
573
perror("inet_ntop");
626
574
} else {
627
575
if(strcmp(addrstr, ip) != 0){
630
578
}
631
579
}
632
580
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
ret = connect(tcp_sd, &to.in, sizeof(to));
638
582
if(ret < 0){
639
583
perror("connect");
640
584
return -1;
686
630
/* Read OpenPGP packet that contains the wanted password */
687
631
688
632
if(debug){
689
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
690
634
ip);
691
635
}
692
636
693
637
while(true){
694
buffer_capacity = incbuffer(&buffer, buffer_length,
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
695
639
buffer_capacity);
696
640
if(buffer_capacity == 0){
697
perror("incbuffer");
641
perror("adjustbuffer");
698
642
retval = -1;
699
643
goto mandos_end;
700
644
}
739
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
740
684
741
685
if(buffer_length > 0){
742
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
743
687
buffer_length,
744
688
&decrypted_buffer);
745
689
if(decrypted_buffer_size >= 0){
780
724
781
725
static void resolve_callback(AvahiSServiceResolver *r,
782
726
AvahiIfIndex interface,
783
AvahiProtocol proto,
727
AVAHI_GCC_UNUSED AvahiProtocol protocol,
784
728
AvahiResolverEvent event,
785
729
const char *name,
786
730
const char *type,
791
735
AVAHI_GCC_UNUSED AvahiStringList *txt,
792
736
AVAHI_GCC_UNUSED AvahiLookupResultFlags
793
737
flags,
794
AVAHI_GCC_UNUSED void* userdata){
738
void* userdata) {
739
mandos_context *mc = userdata;
795
740
assert(r);
796
741
797
742
/* Called whenever a service has been resolved successfully or
798
743
timed out */
799
744
800
switch(event){
745
switch(event) {
801
746
default:
802
747
case AVAHI_RESOLVER_FAILURE:
803
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
804
749
" of type '%s' in domain '%s': %s\n", name, type, domain,
805
avahi_strerror(avahi_server_errno(mc.server)));
750
avahi_strerror(avahi_server_errno(mc->server)));
806
751
break;
807
752
808
753
case AVAHI_RESOLVER_FOUND:
814
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
815
760
ip, (intmax_t)interface, port);
816
761
}
817
int ret = start_mandos_communication(ip, port, interface,
818
avahi_proto_to_af(proto));
762
int ret = start_mandos_communication(ip, port, interface, mc);
819
763
if(ret == 0){
820
avahi_simple_poll_quit(mc.simple_poll);
764
avahi_simple_poll_quit(mc->simple_poll);
821
765
}
822
766
}
823
767
}
824
768
avahi_s_service_resolver_free(r);
825
769
}
826
770
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){
771
static void browse_callback( AvahiSServiceBrowser *b,
772
AvahiIfIndex interface,
773
AvahiProtocol protocol,
774
AvahiBrowserEvent event,
775
const char *name,
776
const char *type,
777
const char *domain,
778
AVAHI_GCC_UNUSED AvahiLookupResultFlags
779
flags,
780
void* userdata) {
781
mandos_context *mc = userdata;
837
782
assert(b);
838
783
839
784
/* Called whenever a new services becomes available on the LAN or
840
785
is removed from the LAN */
841
786
842
switch(event){
787
switch(event) {
843
788
default:
844
789
case AVAHI_BROWSER_FAILURE:
845
790
846
791
fprintf(stderr, "(Avahi browser) %s\n",
847
avahi_strerror(avahi_server_errno(mc.server)));
848
avahi_simple_poll_quit(mc.simple_poll);
792
avahi_strerror(avahi_server_errno(mc->server)));
793
avahi_simple_poll_quit(mc->simple_poll);
849
794
return;
850
795
851
796
case AVAHI_BROWSER_NEW:
854
799
the callback function is called the Avahi server will free the
855
800
resolver for us. */
856
801
857
if(!(avahi_s_service_resolver_new(mc.server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
858
803
protocol, name, type, domain,
859
804
AVAHI_PROTO_INET6, 0,
860
resolve_callback, NULL)))
805
resolve_callback, mc)))
861
806
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
862
name, avahi_strerror(avahi_server_errno(mc.server)));
807
name, avahi_strerror(avahi_server_errno(mc->server)));
863
808
break;
864
809
865
810
case AVAHI_BROWSER_REMOVE:
874
819
}
875
820
}
876
821
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
892
822
int main(int argc, char *argv[]){
893
AvahiSServiceBrowser *sb = NULL;
894
int error;
895
int ret;
896
intmax_t tmpmax;
897
int numchars;
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
double delay = 2.5;
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
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
979
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
980
or arg[numchars] != '\0'){
981
fprintf(stderr, "Bad number of DH bits\n");
982
exit(EXIT_FAILURE);
983
}
984
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
985
break;
986
case 130: /* --priority */
987
mc.priority = arg;
988
break;
989
case 131: /* --delay */
990
ret = sscanf(arg, "%lf%n", &delay, &numchars);
991
if(ret < 1 or arg[numchars] != '\0'){
992
fprintf(stderr, "Bad delay\n");
993
exit(EXIT_FAILURE);
994
}
995
break;
996
case ARGP_KEY_ARG:
997
argp_usage(state);
998
case ARGP_KEY_END:
999
break;
1000
default:
1001
return ARGP_ERR_UNKNOWN;
1002
}
1003
return 0;
1004
}
1005
1006
struct argp argp = { .options = options, .parser = parse_opt,
1007
.args_doc = "",
1008
.doc = "Mandos client -- Get and decrypt"
1009
" passwords from a Mandos server" };
1010
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1011
if(ret == ARGP_ERR_UNKNOWN){
1012
fprintf(stderr, "Unknown error while parsing arguments\n");
1013
exitcode = EXIT_FAILURE;
1014
goto end;
1015
}
1016
}
1017
1018
if(not debug){
1019
avahi_set_log_function(empty_log);
1020
}
1021
1022
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1023
from the signal handler */
1024
/* Initialize the pseudo-RNG for Avahi */
1025
srand((unsigned int) time(NULL));
1026
mc.simple_poll = avahi_simple_poll_new();
1027
if(mc.simple_poll == NULL){
1028
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1029
exitcode = EXIT_FAILURE;
1030
goto end;
1031
}
1032
1033
sigemptyset(&sigterm_action.sa_mask);
1034
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1035
if(ret == -1){
1036
perror("sigaddset");
1037
exitcode = EXIT_FAILURE;
1038
goto end;
1039
}
1040
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1041
if(ret == -1){
1042
perror("sigaddset");
1043
exitcode = EXIT_FAILURE;
1044
goto end;
1045
}
1046
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1047
if(ret == -1){
1048
perror("sigaddset");
1049
exitcode = EXIT_FAILURE;
1050
goto end;
1051
}
1052
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1053
if(ret == -1){
1054
perror("sigaction");
1055
exitcode = EXIT_FAILURE;
1056
goto end;
1057
}
1058
1059
/* If the interface is down, bring it up */
1060
if(interface[0] != '\0'){
1061
#ifdef __linux__
1062
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1063
messages to mess up the prompt */
1064
ret = klogctl(8, NULL, 5);
1065
bool restore_loglevel = true;
1066
if(ret == -1){
1067
restore_loglevel = false;
1068
perror("klogctl");
1069
}
1070
#endif /* __linux__ */
1071
1072
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1073
if(sd < 0){
1074
perror("socket");
1075
exitcode = EXIT_FAILURE;
1076
#ifdef __linux__
1077
if(restore_loglevel){
1078
ret = klogctl(7, NULL, 0);
1079
if(ret == -1){
1080
perror("klogctl");
1081
}
1082
}
1083
#endif /* __linux__ */
1084
goto end;
1085
}
1086
strcpy(network.ifr_name, interface);
1087
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1088
if(ret == -1){
1089
perror("ioctl SIOCGIFFLAGS");
1090
#ifdef __linux__
1091
if(restore_loglevel){
1092
ret = klogctl(7, NULL, 0);
1093
if(ret == -1){
1094
perror("klogctl");
1095
}
1096
}
1097
#endif /* __linux__ */
1098
exitcode = EXIT_FAILURE;
1099
goto end;
1100
}
1101
if((network.ifr_flags & IFF_UP) == 0){
1102
network.ifr_flags |= IFF_UP;
1103
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1104
if(ret == -1){
1105
perror("ioctl SIOCSIFFLAGS");
1106
exitcode = EXIT_FAILURE;
1107
#ifdef __linux__
1108
if(restore_loglevel){
823
AvahiSServiceBrowser *sb = NULL;
824
int error;
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
int exitcode = EXIT_SUCCESS;
829
const char *interface = "eth0";
830
struct ifreq network;
831
int sd;
832
uid_t uid;
833
gid_t gid;
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
842
.dh_bits = 1024, .priority = "SECURE256"
843
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
847
848
{
849
struct argp_option options[] = {
850
{ .name = "debug", .key = 128,
851
.doc = "Debug mode", .group = 3 },
852
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
855
.group = 1 },
856
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
860
.group = 1 },
861
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
864
.group = 1 },
865
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
868
.group = 2 },
869
{ .name = "dh-bits", .key = 129,
870
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
873
.group = 2 },
874
{ .name = "priority", .key = 130,
875
.arg = "STRING",
876
.doc = "GnuTLS priority string for the TLS handshake",
877
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
882
{ .name = NULL }
883
};
884
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
889
debug = true;
890
break;
891
case 'c': /* --connect */
892
connect_to = arg;
893
break;
894
case 'i': /* --interface */
895
interface = arg;
896
break;
897
case 's': /* --seckey */
898
seckey = arg;
899
break;
900
case 'p': /* --pubkey */
901
pubkey = arg;
902
break;
903
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
908
exit(EXIT_FAILURE);
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
break;
912
case 130: /* --priority */
913
mc.priority = arg;
914
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
922
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
925
break;
926
default:
927
return ARGP_ERR_UNKNOWN;
928
}
929
return 0;
930
}
931
932
struct argp argp = { .options = options, .parser = parse_opt,
933
.args_doc = "",
934
.doc = "Mandos client -- Get and decrypt"
935
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
938
fprintf(stderr, "Unknown error while parsing arguments\n");
939
exitcode = EXIT_FAILURE;
940
goto end;
941
}
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
952
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
if(sd < 0) {
955
perror("socket");
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
goto end;
962
}
963
strcpy(network.ifr_name, interface);
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
if(ret == -1){
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
exitcode = EXIT_FAILURE;
972
goto end;
973
}
974
if((network.ifr_flags & IFF_UP) == 0){
975
network.ifr_flags |= IFF_UP;
976
ret = ioctl(sd, SIOCSIFFLAGS, &network);
977
if(ret == -1){
978
perror("ioctl SIOCSIFFLAGS");
979
exitcode = EXIT_FAILURE;
1109
980
ret = klogctl(7, NULL, 0);
1110
981
if(ret == -1){
1111
982
perror("klogctl");
1112
983
}
1113
}
1114
#endif /* __linux__ */
1115
goto end;
1116
}
1117
}
1118
/* sleep checking until interface is running */
1119
for(int i=0; i < delay * 4; i++){
1120
ret = ioctl(sd, SIOCGIFFLAGS, &network);
984
goto end;
985
}
986
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1121
999
if(ret == -1){
1122
perror("ioctl SIOCGIFFLAGS");
1123
} else if(network.ifr_flags & IFF_RUNNING){
1124
break;
1125
}
1126
struct timespec sleeptime = { .tv_nsec = 250000000 };
1127
ret = nanosleep(&sleeptime, NULL);
1128
if(ret == -1 and errno != EINTR){
1129
perror("nanosleep");
1130
}
1131
}
1132
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1133
if(ret == -1){
1134
perror("close");
1135
}
1136
#ifdef __linux__
1137
if(restore_loglevel){
1000
perror("close");
1001
}
1138
1002
/* Restores kernel loglevel to default */
1139
1003
ret = klogctl(7, NULL, 0);
1140
1004
if(ret == -1){
1141
1005
perror("klogctl");
1142
1006
}
1143
1007
}
1144
#endif /* __linux__ */
1145
}
1146
1147
uid = getuid();
1148
gid = getgid();
1149
1150
errno = 0;
1151
setgid(gid);
1152
if(ret == -1){
1153
perror("setgid");
1154
}
1155
1156
ret = setuid(uid);
1157
if(ret == -1){
1158
perror("setuid");
1159
}
1160
1161
ret = init_gnutls_global(pubkey, seckey);
1162
if(ret == -1){
1163
fprintf(stderr, "init_gnutls_global failed\n");
1164
exitcode = EXIT_FAILURE;
1165
goto end;
1166
} else {
1167
gnutls_initialized = true;
1168
}
1169
1170
if(mkdtemp(tempdir) == NULL){
1171
perror("mkdtemp");
1172
goto end;
1173
}
1174
tempdir_created = true;
1175
1176
if(not init_gpgme(pubkey, seckey, tempdir)){
1177
fprintf(stderr, "init_gpgme failed\n");
1178
exitcode = EXIT_FAILURE;
1179
goto end;
1180
} else {
1181
gpgme_initialized = true;
1182
}
1183
1184
if(interface[0] != '\0'){
1008
1009
uid = getuid();
1010
gid = getgid();
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
1022
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
1024
fprintf(stderr, "init_gnutls_global failed\n");
1025
exitcode = EXIT_FAILURE;
1026
goto end;
1027
} else {
1028
gnutls_initialized = true;
1029
}
1030
1031
if(mkdtemp(tempdir) == NULL){
1032
perror("mkdtemp");
1033
goto end;
1034
}
1035
tempdir_created = true;
1036
1037
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
} else {
1042
gpgme_initialized = true;
1043
}
1044
1185
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
1186
1046
if(if_index == 0){
1187
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1188
1048
exitcode = EXIT_FAILURE;
1189
1049
goto end;
1190
1050
}
1191
}
1192
1193
if(connect_to != NULL){
1194
/* Connect directly, do not use Zeroconf */
1195
/* (Mainly meant for debugging) */
1196
char *address = strrchr(connect_to, ':');
1197
if(address == NULL){
1198
fprintf(stderr, "No colon in address\n");
1199
exitcode = EXIT_FAILURE;
1200
goto end;
1201
}
1202
uint16_t port;
1203
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1204
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1205
or address[numchars+1] != '\0'){
1206
fprintf(stderr, "Bad port number\n");
1207
exitcode = EXIT_FAILURE;
1208
goto end;
1209
}
1210
port = (uint16_t)tmpmax;
1211
*address = '\0';
1212
address = connect_to;
1213
/* Colon in address indicates IPv6 */
1214
int af;
1215
if(strchr(address, ':') != NULL){
1216
af = AF_INET6;
1217
} else {
1218
af = AF_INET;
1219
}
1220
ret = start_mandos_communication(address, port, if_index, af);
1221
if(ret < 0){
1222
exitcode = EXIT_FAILURE;
1223
} else {
1224
exitcode = EXIT_SUCCESS;
1225
}
1226
goto end;
1227
}
1228
1229
{
1230
AvahiServerConfig config;
1231
/* Do not publish any local Zeroconf records */
1232
avahi_server_config_init(&config);
1233
config.publish_hinfo = 0;
1234
config.publish_addresses = 0;
1235
config.publish_workstation = 0;
1236
config.publish_domain = 0;
1237
1238
/* Allocate a new server */
1239
mc.server = avahi_server_new(avahi_simple_poll_get
1240
(mc.simple_poll), &config, NULL,
1241
NULL, &error);
1242
1243
/* Free the Avahi configuration data */
1244
avahi_server_config_free(&config);
1245
}
1246
1247
/* Check if creating the Avahi server object succeeded */
1248
if(mc.server == NULL){
1249
fprintf(stderr, "Failed to create Avahi server: %s\n",
1250
avahi_strerror(error));
1251
exitcode = EXIT_FAILURE;
1252
goto end;
1253
}
1254
1255
/* Create the Avahi service browser */
1256
sb = avahi_s_service_browser_new(mc.server, if_index,
1257
AVAHI_PROTO_INET6, "_mandos._tcp",
1258
NULL, 0, browse_callback, NULL);
1259
if(sb == NULL){
1260
fprintf(stderr, "Failed to create service browser: %s\n",
1261
avahi_strerror(avahi_server_errno(mc.server)));
1262
exitcode = EXIT_FAILURE;
1263
goto end;
1264
}
1265
1266
/* Run the main loop */
1267
1268
if(debug){
1269
fprintf(stderr, "Starting Avahi loop search\n");
1270
}
1271
1272
avahi_simple_poll_loop(mc.simple_poll);
1273
1051
1052
if(connect_to != NULL){
1053
/* Connect directly, do not use Zeroconf */
1054
/* (Mainly meant for debugging) */
1055
char *address = strrchr(connect_to, ':');
1056
if(address == NULL){
1057
fprintf(stderr, "No colon in address\n");
1058
exitcode = EXIT_FAILURE;
1059
goto end;
1060
}
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
1066
exitcode = EXIT_FAILURE;
1067
goto end;
1068
}
1069
port = (uint16_t)tmpmax;
1070
*address = '\0';
1071
address = connect_to;
1072
ret = start_mandos_communication(address, port, if_index, &mc);
1073
if(ret < 0){
1074
exitcode = EXIT_FAILURE;
1075
} else {
1076
exitcode = EXIT_SUCCESS;
1077
}
1078
goto end;
1079
}
1080
1081
if(not debug){
1082
avahi_set_log_function(empty_log);
1083
}
1084
1085
/* Initialize the pseudo-RNG for Avahi */
1086
srand((unsigned int) time(NULL));
1087
1088
/* Allocate main Avahi loop object */
1089
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
" object.\n");
1093
exitcode = EXIT_FAILURE;
1094
goto end;
1095
}
1096
1097
{
1098
AvahiServerConfig config;
1099
/* Do not publish any local Zeroconf records */
1100
avahi_server_config_init(&config);
1101
config.publish_hinfo = 0;
1102
config.publish_addresses = 0;
1103
config.publish_workstation = 0;
1104
config.publish_domain = 0;
1105
1106
/* Allocate a new server */
1107
mc.server = avahi_server_new(avahi_simple_poll_get
1108
(mc.simple_poll), &config, NULL,
1109
NULL, &error);
1110
1111
/* Free the Avahi configuration data */
1112
avahi_server_config_free(&config);
1113
}
1114
1115
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
avahi_strerror(error));
1119
exitcode = EXIT_FAILURE;
1120
goto end;
1121
}
1122
1123
/* Create the Avahi service browser */
1124
sb = avahi_s_service_browser_new(mc.server, if_index,
1125
AVAHI_PROTO_INET6,
1126
"_mandos._tcp", NULL, 0,
1127
browse_callback, &mc);
1128
if(sb == NULL) {
1129
fprintf(stderr, "Failed to create service browser: %s\n",
1130
avahi_strerror(avahi_server_errno(mc.server)));
1131
exitcode = EXIT_FAILURE;
1132
goto end;
1133
}
1134
1135
/* Run the main loop */
1136
1137
if(debug){
1138
fprintf(stderr, "Starting Avahi loop search\n");
1139
}
1140
1141
avahi_simple_poll_loop(mc.simple_poll);
1142
1274
1143
end:
1275
1276
if(debug){
1277
fprintf(stderr, "%s exiting\n", argv[0]);
1278
}
1279
1280
/* Cleanup things */
1281
if(sb != NULL)
1282
avahi_s_service_browser_free(sb);
1283
1284
if(mc.server != NULL)
1285
avahi_server_free(mc.server);
1286
1287
if(mc.simple_poll != NULL)
1288
avahi_simple_poll_free(mc.simple_poll);
1289
1290
if(gnutls_initialized){
1291
gnutls_certificate_free_credentials(mc.cred);
1292
gnutls_global_deinit();
1293
gnutls_dh_params_deinit(mc.dh_params);
1294
}
1295
1296
if(gpgme_initialized){
1297
gpgme_release(mc.ctx);
1298
}
1299
1300
/* Removes the temp directory used by GPGME */
1301
if(tempdir_created){
1302
DIR *d;
1303
struct dirent *direntry;
1304
d = opendir(tempdir);
1305
if(d == NULL){
1306
if(errno != ENOENT){
1307
perror("opendir");
1308
}
1309
} else {
1310
while(true){
1311
direntry = readdir(d);
1312
if(direntry == NULL){
1313
break;
1314
}
1315
/* Skip "." and ".." */
1316
if(direntry->d_name[0] == '.'
1317
and (direntry->d_name[1] == '\0'
1318
or (direntry->d_name[1] == '.'
1319
and direntry->d_name[2] == '\0'))){
1320
continue;
1321
}
1322
char *fullname = NULL;
1323
ret = asprintf(&fullname, "%s/%s", tempdir,
1324
direntry->d_name);
1325
if(ret < 0){
1326
perror("asprintf");
1327
continue;
1328
}
1329
ret = remove(fullname);
1330
if(ret == -1){
1331
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1332
strerror(errno));
1333
}
1334
free(fullname);
1335
}
1336
closedir(d);
1337
}
1338
ret = rmdir(tempdir);
1339
if(ret == -1 and errno != ENOENT){
1340
perror("rmdir");
1341
}
1342
}
1343
1344
return exitcode;
1144
1145
if(debug){
1146
fprintf(stderr, "%s exiting\n", argv[0]);
1147
}
1148
1149
/* Cleanup things */
1150
if(sb != NULL)
1151
avahi_s_service_browser_free(sb);
1152
1153
if(mc.server != NULL)
1154
avahi_server_free(mc.server);
1155
1156
if(mc.simple_poll != NULL)
1157
avahi_simple_poll_free(mc.simple_poll);
1158
1159
if(gnutls_initialized){
1160
gnutls_certificate_free_credentials(mc.cred);
1161
gnutls_global_deinit();
1162
gnutls_dh_params_deinit(mc.dh_params);
1163
}
1164
1165
if(gpgme_initialized){
1166
gpgme_release(mc.ctx);
1167
}
1168
1169
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1171
DIR *d;
1172
struct dirent *direntry;
1173
d = opendir(tempdir);
1174
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1178
} else {
1179
while(true){
1180
direntry = readdir(d);
1181
if(direntry == NULL){
1182
break;
1183
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1204
}
1205
closedir(d);
1206
}
1207
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1209
perror("rmdir");
1210
}
1211
}
1212
1213
return exitcode;
1345
1214
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0