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- Committer: Teddy Hogeborn
- Date: 2009-02-07 05:05:03 UTC
- Revision ID: teddy@fukt.bsnet.se-20090207050503-wi4qno0t5ua46vvx
* initramfs-tools-hook: Add extra newline to plugin-runner.conf to
guard against a possible comment character
without a newline.
guard against a possible comment character
without a newline.
added
removed
plugins.d/mandos-client.c
36
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
37
38
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), remove() */
39
stdout, ferror(), sscanf(),
40
remove() */
40
41
#include <stdint.h> /* uint16_t, uint32_t */
41
42
#include <stddef.h> /* NULL, size_t, ssize_t */
42
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand(), strtof() */
44
#include <stdbool.h> /* bool, false, true */
44
srand() */
45
#include <stdbool.h> /* bool, true */
45
46
#include <string.h> /* memset(), strcmp(), strlen(),
46
47
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/ioctl.h> /* ioctl */
48
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
50
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, uid_t, gid_t, open(),
51
opendir(), DIR */
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
52
54
#include <sys/stat.h> /* open() */
53
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
inet_pton(), connect() */
56
struct in6_addr, inet_pton(),
57
connect() */
55
58
#include <fcntl.h> /* open() */
56
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
57
60
*/
58
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
59
strtoimax() */
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
60
62
#include <assert.h> /* assert() */
61
63
#include <errno.h> /* perror(), errno */
62
64
#include <time.h> /* nanosleep(), time() */
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
78
#ifdef __linux__
83
79
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
80
#endif
85
81
86
82
/* Avahi */
87
83
/* All Avahi types, constants and functions
133
129
gpgme_ctx_t ctx;
134
130
} mandos_context;
135
131
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
132
/*
142
* Make additional room in "buffer" for at least BUFFER_SIZE more
143
* bytes. "buffer_capacity" is how much is currently allocated,
133
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
134
* "buffer_capacity" is how much is currently allocated,
144
135
* "buffer_length" is how much is already used.
145
136
*/
146
size_t incbuffer(char **buffer, size_t buffer_length,
137
size_t adjustbuffer(char **buffer, size_t buffer_length,
147
138
size_t buffer_capacity){
148
139
if(buffer_length + BUFFER_SIZE > buffer_capacity){
149
140
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
149
/*
159
150
* Initialize GPGME.
160
151
*/
161
static bool init_gpgme(const char *seckey,
152
static bool init_gpgme(mandos_context *mc, const char *seckey,
162
153
const char *pubkey, const char *tempdir){
163
154
int ret;
164
155
gpgme_error_t rc;
185
176
return false;
186
177
}
187
178
188
rc = gpgme_op_import(mc.ctx, pgp_data);
179
rc = gpgme_op_import(mc->ctx, pgp_data);
189
180
if(rc != GPG_ERR_NO_ERROR){
190
181
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
191
182
gpgme_strsource(rc), gpgme_strerror(rc));
201
192
}
202
193
203
194
if(debug){
204
fprintf(stderr, "Initializing GPGME\n");
195
fprintf(stderr, "Initialize gpgme\n");
205
196
}
206
197
207
198
/* Init GPGME */
234
225
}
235
226
236
227
/* Create new GPGME "context" */
237
rc = gpgme_new(&(mc.ctx));
228
rc = gpgme_new(&(mc->ctx));
238
229
if(rc != GPG_ERR_NO_ERROR){
239
230
fprintf(stderr, "bad gpgme_new: %s: %s\n",
240
231
gpgme_strsource(rc), gpgme_strerror(rc));
252
243
* Decrypt OpenPGP data.
253
244
* Returns -1 on error
254
245
*/
255
static ssize_t pgp_packet_decrypt(const char *cryptotext,
246
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
247
const char *cryptotext,
256
248
size_t crypto_size,
257
249
char **plaintext){
258
250
gpgme_data_t dh_crypto, dh_plain;
285
277
286
278
/* Decrypt data from the cryptotext data buffer to the plaintext
287
279
data buffer */
288
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
280
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
289
281
if(rc != GPG_ERR_NO_ERROR){
290
282
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
291
283
gpgme_strsource(rc), gpgme_strerror(rc));
292
284
plaintext_length = -1;
293
285
if(debug){
294
286
gpgme_decrypt_result_t result;
295
result = gpgme_op_decrypt_result(mc.ctx);
287
result = gpgme_op_decrypt_result(mc->ctx);
296
288
if(result == NULL){
297
289
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
298
290
} else {
334
326
335
327
*plaintext = NULL;
336
328
while(true){
337
plaintext_capacity = incbuffer(plaintext,
329
plaintext_capacity = adjustbuffer(plaintext,
338
330
(size_t)plaintext_length,
339
331
plaintext_capacity);
340
332
if(plaintext_capacity == 0){
341
perror("incbuffer");
333
perror("adjustbuffer");
342
334
plaintext_length = -1;
343
335
goto decrypt_end;
344
336
}
390
382
fprintf(stderr, "GnuTLS: %s", string);
391
383
}
392
384
393
static int init_gnutls_global(const char *pubkeyfilename,
385
static int init_gnutls_global(mandos_context *mc,
386
const char *pubkeyfilename,
394
387
const char *seckeyfilename){
395
388
int ret;
396
389
414
407
}
415
408
416
409
/* OpenPGP credentials */
417
gnutls_certificate_allocate_credentials(&mc.cred);
410
gnutls_certificate_allocate_credentials(&mc->cred);
418
411
if(ret != GNUTLS_E_SUCCESS){
419
412
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
420
from
421
-Wunreachable-code
422
*/
413
* from
414
* -Wunreachable-code
415
*/
423
416
safer_gnutls_strerror(ret));
424
417
gnutls_global_deinit();
425
418
return -1;
432
425
}
433
426
434
427
ret = gnutls_certificate_set_openpgp_key_file
435
(mc.cred, pubkeyfilename, seckeyfilename,
428
(mc->cred, pubkeyfilename, seckeyfilename,
436
429
GNUTLS_OPENPGP_FMT_BASE64);
437
430
if(ret != GNUTLS_E_SUCCESS){
438
431
fprintf(stderr,
444
437
}
445
438
446
439
/* GnuTLS server initialization */
447
ret = gnutls_dh_params_init(&mc.dh_params);
440
ret = gnutls_dh_params_init(&mc->dh_params);
448
441
if(ret != GNUTLS_E_SUCCESS){
449
442
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
450
443
" %s\n", safer_gnutls_strerror(ret));
451
444
goto globalfail;
452
445
}
453
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
446
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
454
447
if(ret != GNUTLS_E_SUCCESS){
455
448
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
456
449
safer_gnutls_strerror(ret));
457
450
goto globalfail;
458
451
}
459
452
460
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
453
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
461
454
462
455
return 0;
463
456
464
457
globalfail:
465
458
466
gnutls_certificate_free_credentials(mc.cred);
459
gnutls_certificate_free_credentials(mc->cred);
467
460
gnutls_global_deinit();
468
gnutls_dh_params_deinit(mc.dh_params);
461
gnutls_dh_params_deinit(mc->dh_params);
469
462
return -1;
470
463
}
471
464
472
static int init_gnutls_session(gnutls_session_t *session){
465
static int init_gnutls_session(mandos_context *mc,
466
gnutls_session_t *session){
473
467
int ret;
474
468
/* GnuTLS session creation */
475
469
ret = gnutls_init(session, GNUTLS_SERVER);
480
474
481
475
{
482
476
const char *err;
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
477
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
484
478
if(ret != GNUTLS_E_SUCCESS){
485
479
fprintf(stderr, "Syntax error at: %s\n", err);
486
480
fprintf(stderr, "GnuTLS error: %s\n",
491
485
}
492
486
493
487
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
494
mc.cred);
488
mc->cred);
495
489
if(ret != GNUTLS_E_SUCCESS){
496
490
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
497
491
safer_gnutls_strerror(ret));
503
497
gnutls_certificate_server_set_request(*session,
504
498
GNUTLS_CERT_IGNORE);
505
499
506
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
500
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
507
501
508
502
return 0;
509
503
}
515
509
/* Called when a Mandos server is found */
516
510
static int start_mandos_communication(const char *ip, uint16_t port,
517
511
AvahiIfIndex if_index,
518
int af){
512
mandos_context *mc){
519
513
int ret, tcp_sd;
520
514
ssize_t sret;
521
union {
522
struct sockaddr_in in;
523
struct sockaddr_in6 in6;
524
} to;
515
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
525
516
char *buffer = NULL;
526
517
char *decrypted_buffer;
527
518
size_t buffer_length = 0;
529
520
ssize_t decrypted_buffer_size;
530
521
size_t written;
531
522
int retval = 0;
523
char interface[IF_NAMESIZE];
532
524
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);
525
526
ret = init_gnutls_session(mc, &session);
548
527
if(ret != 0){
549
528
return -1;
550
529
}
551
530
552
531
if(debug){
553
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
532
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
554
533
"\n", ip, port);
555
534
}
556
535
557
tcp_sd = socket(pf, SOCK_STREAM, 0);
536
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
558
537
if(tcp_sd < 0){
559
538
perror("socket");
560
539
return -1;
561
540
}
562
541
542
if(debug){
543
if(if_indextoname((unsigned int)if_index, interface) == NULL){
544
perror("if_indextoname");
545
return -1;
546
}
547
fprintf(stderr, "Binding to interface %s\n", interface);
548
}
549
563
550
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
}
551
to.in6.sin6_family = AF_INET6;
552
/* It would be nice to have a way to detect if we were passed an
553
IPv4 address here. Now we assume an IPv6 address. */
554
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
571
555
if(ret < 0 ){
572
556
perror("inet_pton");
573
557
return -1;
576
560
fprintf(stderr, "Bad address: %s\n", ip);
577
561
return -1;
578
562
}
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
563
to.in6.sin6_port = htons(port); /* Spurious warnings from
597
564
-Wconversion and
598
565
-Wunreachable-code */
599
}
566
567
to.in6.sin6_scope_id = (uint32_t)if_index;
600
568
601
569
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){
570
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
571
port);
572
char addrstr[INET6_ADDRSTRLEN] = "";
573
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
574
sizeof(addrstr)) == NULL){
625
575
perror("inet_ntop");
626
576
} else {
627
577
if(strcmp(addrstr, ip) != 0){
630
580
}
631
581
}
632
582
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
}
583
ret = connect(tcp_sd, &to.in, sizeof(to));
638
584
if(ret < 0){
639
585
perror("connect");
640
586
return -1;
686
632
/* Read OpenPGP packet that contains the wanted password */
687
633
688
634
if(debug){
689
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
635
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
690
636
ip);
691
637
}
692
638
693
639
while(true){
694
buffer_capacity = incbuffer(&buffer, buffer_length,
640
buffer_capacity = adjustbuffer(&buffer, buffer_length,
695
641
buffer_capacity);
696
642
if(buffer_capacity == 0){
697
perror("incbuffer");
643
perror("adjustbuffer");
698
644
retval = -1;
699
645
goto mandos_end;
700
646
}
739
685
gnutls_bye(session, GNUTLS_SHUT_RDWR);
740
686
741
687
if(buffer_length > 0){
742
decrypted_buffer_size = pgp_packet_decrypt(buffer,
688
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
743
689
buffer_length,
744
690
&decrypted_buffer);
745
691
if(decrypted_buffer_size >= 0){
780
726
781
727
static void resolve_callback(AvahiSServiceResolver *r,
782
728
AvahiIfIndex interface,
783
AvahiProtocol proto,
729
AVAHI_GCC_UNUSED AvahiProtocol protocol,
784
730
AvahiResolverEvent event,
785
731
const char *name,
786
732
const char *type,
791
737
AVAHI_GCC_UNUSED AvahiStringList *txt,
792
738
AVAHI_GCC_UNUSED AvahiLookupResultFlags
793
739
flags,
794
AVAHI_GCC_UNUSED void* userdata){
740
void* userdata){
741
mandos_context *mc = userdata;
795
742
assert(r);
796
743
797
744
/* Called whenever a service has been resolved successfully or
802
749
case AVAHI_RESOLVER_FAILURE:
803
750
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
804
751
" of type '%s' in domain '%s': %s\n", name, type, domain,
805
avahi_strerror(avahi_server_errno(mc.server)));
752
avahi_strerror(avahi_server_errno(mc->server)));
806
753
break;
807
754
808
755
case AVAHI_RESOLVER_FOUND:
814
761
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
815
762
ip, (intmax_t)interface, port);
816
763
}
817
int ret = start_mandos_communication(ip, port, interface,
818
avahi_proto_to_af(proto));
764
int ret = start_mandos_communication(ip, port, interface, mc);
819
765
if(ret == 0){
820
avahi_simple_poll_quit(mc.simple_poll);
766
avahi_simple_poll_quit(mc->simple_poll);
821
767
}
822
768
}
823
769
}
833
779
const char *domain,
834
780
AVAHI_GCC_UNUSED AvahiLookupResultFlags
835
781
flags,
836
AVAHI_GCC_UNUSED void* userdata){
782
void* userdata){
783
mandos_context *mc = userdata;
837
784
assert(b);
838
785
839
786
/* Called whenever a new services becomes available on the LAN or
844
791
case AVAHI_BROWSER_FAILURE:
845
792
846
793
fprintf(stderr, "(Avahi browser) %s\n",
847
avahi_strerror(avahi_server_errno(mc.server)));
848
avahi_simple_poll_quit(mc.simple_poll);
794
avahi_strerror(avahi_server_errno(mc->server)));
795
avahi_simple_poll_quit(mc->simple_poll);
849
796
return;
850
797
851
798
case AVAHI_BROWSER_NEW:
854
801
the callback function is called the Avahi server will free the
855
802
resolver for us. */
856
803
857
if(!(avahi_s_service_resolver_new(mc.server, interface,
804
if(!(avahi_s_service_resolver_new(mc->server, interface,
858
805
protocol, name, type, domain,
859
806
AVAHI_PROTO_INET6, 0,
860
resolve_callback, NULL)))
807
resolve_callback, mc)))
861
808
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
862
name, avahi_strerror(avahi_server_errno(mc.server)));
809
name, avahi_strerror(avahi_server_errno(mc->server)));
863
810
break;
864
811
865
812
case AVAHI_BROWSER_REMOVE:
874
821
}
875
822
}
876
823
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
824
int main(int argc, char *argv[]){
893
825
AvahiSServiceBrowser *sb = NULL;
894
826
int error;
895
827
int ret;
896
828
intmax_t tmpmax;
897
char *tmp;
829
int numchars;
898
830
int exitcode = EXIT_SUCCESS;
899
831
const char *interface = "eth0";
900
832
struct ifreq network;
908
840
const char *seckey = PATHDIR "/" SECKEY;
909
841
const char *pubkey = PATHDIR "/" PUBKEY;
910
842
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" };
843
mandos_context mc = { .simple_poll = NULL, .server = NULL,
844
.dh_bits = 1024, .priority = "SECURE256"
845
":!CTYPE-X.509:+CTYPE-OPENPGP" };
915
846
bool gnutls_initialized = false;
916
847
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 };
848
double delay = 2.5;
921
849
922
850
{
923
851
struct argp_option options[] = {
929
857
.group = 1 },
930
858
{ .name = "interface", .key = 'i',
931
859
.arg = "NAME",
932
.doc = "Network interface that will be used to search for"
933
" Mandos servers",
860
.doc = "Interface that will be used to search for Mandos"
861
" servers",
934
862
.group = 1 },
935
863
{ .name = "seckey", .key = 's',
936
864
.arg = "FILE",
975
903
pubkey = arg;
976
904
break;
977
905
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){
906
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
907
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
908
or arg[numchars] != '\0'){
982
909
fprintf(stderr, "Bad number of DH bits\n");
983
910
exit(EXIT_FAILURE);
984
911
}
988
915
mc.priority = arg;
989
916
break;
990
917
case 131: /* --delay */
991
errno = 0;
992
delay = strtof(arg, &tmp);
993
if(errno != 0 or tmp == arg or *tmp != '\0'){
918
ret = sscanf(arg, "%lf%n", &delay, &numchars);
919
if(ret < 1 or arg[numchars] != '\0'){
994
920
fprintf(stderr, "Bad delay\n");
995
921
exit(EXIT_FAILURE);
996
922
}
1017
943
}
1018
944
}
1019
945
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
946
/* If the interface is down, bring it up */
1062
if(interface[0] != '\0'){
947
{
1063
948
#ifdef __linux__
1064
949
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1065
950
messages to mess up the prompt */
1066
951
ret = klogctl(8, NULL, 5);
1067
bool restore_loglevel = true;
1068
952
if(ret == -1){
1069
restore_loglevel = false;
1070
953
perror("klogctl");
1071
954
}
1072
#endif /* __linux__ */
955
#endif
1073
956
1074
957
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1075
958
if(sd < 0){
1076
959
perror("socket");
1077
960
exitcode = EXIT_FAILURE;
1078
961
#ifdef __linux__
1079
if(restore_loglevel){
1080
ret = klogctl(7, NULL, 0);
1081
if(ret == -1){
1082
perror("klogctl");
1083
}
962
ret = klogctl(7, NULL, 0);
963
if(ret == -1){
964
perror("klogctl");
1084
965
}
1085
#endif /* __linux__ */
966
#endif
1086
967
goto end;
1087
968
}
1088
969
strcpy(network.ifr_name, interface);
1090
971
if(ret == -1){
1091
972
perror("ioctl SIOCGIFFLAGS");
1092
973
#ifdef __linux__
1093
if(restore_loglevel){
1094
ret = klogctl(7, NULL, 0);
1095
if(ret == -1){
1096
perror("klogctl");
1097
}
974
ret = klogctl(7, NULL, 0);
975
if(ret == -1){
976
perror("klogctl");
1098
977
}
1099
#endif /* __linux__ */
978
#endif
1100
979
exitcode = EXIT_FAILURE;
1101
980
goto end;
1102
981
}
1107
986
perror("ioctl SIOCSIFFLAGS");
1108
987
exitcode = EXIT_FAILURE;
1109
988
#ifdef __linux__
1110
if(restore_loglevel){
1111
ret = klogctl(7, NULL, 0);
1112
if(ret == -1){
1113
perror("klogctl");
1114
}
989
ret = klogctl(7, NULL, 0);
990
if(ret == -1){
991
perror("klogctl");
1115
992
}
1116
#endif /* __linux__ */
993
#endif
1117
994
goto end;
1118
995
}
1119
996
}
1136
1013
perror("close");
1137
1014
}
1138
1015
#ifdef __linux__
1139
if(restore_loglevel){
1140
/* Restores kernel loglevel to default */
1141
ret = klogctl(7, NULL, 0);
1142
if(ret == -1){
1143
perror("klogctl");
1144
}
1016
/* Restores kernel loglevel to default */
1017
ret = klogctl(7, NULL, 0);
1018
if(ret == -1){
1019
perror("klogctl");
1145
1020
}
1146
#endif /* __linux__ */
1021
#endif
1147
1022
}
1148
1023
1149
1024
uid = getuid();
1150
1025
gid = getgid();
1151
1026
1152
errno = 0;
1153
1027
setgid(gid);
1154
1028
if(ret == -1){
1155
1029
perror("setgid");
1160
1034
perror("setuid");
1161
1035
}
1162
1036
1163
ret = init_gnutls_global(pubkey, seckey);
1037
ret = init_gnutls_global(&mc, pubkey, seckey);
1164
1038
if(ret == -1){
1165
1039
fprintf(stderr, "init_gnutls_global failed\n");
1166
1040
exitcode = EXIT_FAILURE;
1175
1049
}
1176
1050
tempdir_created = true;
1177
1051
1178
if(not init_gpgme(pubkey, seckey, tempdir)){
1052
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1179
1053
fprintf(stderr, "init_gpgme failed\n");
1180
1054
exitcode = EXIT_FAILURE;
1181
1055
goto end;
1183
1057
gpgme_initialized = true;
1184
1058
}
1185
1059
1186
if(interface[0] != '\0'){
1187
if_index = (AvahiIfIndex) if_nametoindex(interface);
1188
if(if_index == 0){
1189
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1190
exitcode = EXIT_FAILURE;
1191
goto end;
1192
}
1060
if_index = (AvahiIfIndex) if_nametoindex(interface);
1061
if(if_index == 0){
1062
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1063
exitcode = EXIT_FAILURE;
1064
goto end;
1193
1065
}
1194
1066
1195
1067
if(connect_to != NULL){
1202
1074
goto end;
1203
1075
}
1204
1076
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){
1077
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1078
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1079
or address[numchars+1] != '\0'){
1209
1080
fprintf(stderr, "Bad port number\n");
1210
1081
exitcode = EXIT_FAILURE;
1211
1082
goto end;
1213
1084
port = (uint16_t)tmpmax;
1214
1085
*address = '\0';
1215
1086
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);
1087
ret = start_mandos_communication(address, port, if_index, &mc);
1224
1088
if(ret < 0){
1225
1089
exitcode = EXIT_FAILURE;
1226
1090
} else {
1228
1092
}
1229
1093
goto end;
1230
1094
}
1231
1095
1096
if(not debug){
1097
avahi_set_log_function(empty_log);
1098
}
1099
1100
/* Initialize the pseudo-RNG for Avahi */
1101
srand((unsigned int) time(NULL));
1102
1103
/* Allocate main Avahi loop object */
1104
mc.simple_poll = avahi_simple_poll_new();
1105
if(mc.simple_poll == NULL){
1106
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1107
exitcode = EXIT_FAILURE;
1108
goto end;
1109
}
1110
1232
1111
{
1233
1112
AvahiServerConfig config;
1234
1113
/* Do not publish any local Zeroconf records */
1258
1137
/* Create the Avahi service browser */
1259
1138
sb = avahi_s_service_browser_new(mc.server, if_index,
1260
1139
AVAHI_PROTO_INET6, "_mandos._tcp",
1261
NULL, 0, browse_callback, NULL);
1140
NULL, 0, browse_callback, &mc);
1262
1141
if(sb == NULL){
1263
1142
fprintf(stderr, "Failed to create service browser: %s\n",
1264
1143
avahi_strerror(avahi_server_errno(mc.server)));
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0