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- Committer: Teddy Hogeborn
- Date: 2009-02-04 06:52:40 UTC
- Revision ID: teddy@fukt.bsnet.se-20090204065240-21mtv9va8n1n5lkg
* plugin-runner.c: Whitespace changes only.
* plugins.d/mandos-client.c: Wrap calls to klogctl() inside "#ifdef
__linux__". Detect and show any error
from nanosleep.
* plugins.d/password-prompt.c: Whitespace changes only.
* plugins.d/mandos-client.c: Wrap calls to klogctl() inside "#ifdef
__linux__". Detect and show any error
from nanosleep.
* plugins.d/password-prompt.c: Whitespace changes only.
- files modified:
- INSTALL
added
removed
plugins.d/mandos-client.c
30
30
*/
31
31
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
33
#ifndef _LARGEFILE_SOURCE
34
33
#define _LARGEFILE_SOURCE
35
#endif
36
#ifndef _FILE_OFFSET_BITS
37
34
#define _FILE_OFFSET_BITS 64
38
#endif
39
35
40
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
41
37
42
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror(), remove() */
39
stdout, ferror(), sscanf(),
40
remove() */
44
41
#include <stdint.h> /* uint16_t, uint32_t */
45
42
#include <stddef.h> /* NULL, size_t, ssize_t */
46
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
47
srand(), strtof() */
48
#include <stdbool.h> /* bool, false, true */
44
srand() */
45
#include <stdbool.h> /* bool, true */
49
46
#include <string.h> /* memset(), strcmp(), strlen(),
50
47
strerror(), asprintf(), strcpy() */
51
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/ioctl.h> /* ioctl */
52
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
53
50
sockaddr_in6, PF_INET6,
54
SOCK_STREAM, uid_t, gid_t, open(),
55
opendir(), DIR */
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
56
54
#include <sys/stat.h> /* open() */
57
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
inet_pton(), connect() */
56
struct in6_addr, inet_pton(),
57
connect() */
59
58
#include <fcntl.h> /* open() */
60
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
61
60
*/
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
63
strtoimax() */
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
64
62
#include <assert.h> /* assert() */
65
63
#include <errno.h> /* perror(), errno */
66
64
#include <time.h> /* nanosleep(), time() */
67
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
68
66
SIOCSIFFLAGS, if_indextoname(),
69
67
if_nametoindex(), IF_NAMESIZE */
70
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
71
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
72
*/
68
#include <netinet/in.h>
73
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
74
70
getuid(), getgid(), setuid(),
75
71
setgid() */
76
72
#include <arpa/inet.h> /* inet_pton(), htons */
77
#include <iso646.h> /* not, or, and */
73
#include <iso646.h> /* not, and, or */
78
74
#include <argp.h> /* struct argp_option, error_t, struct
79
75
argp_state, struct argp,
80
76
argp_parse(), ARGP_KEY_ARG,
81
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
sigaction(), SIGTERM, sigaction,
84
sig_atomic_t */
85
86
78
#ifdef __linux__
87
79
#include <sys/klog.h> /* klogctl() */
88
#endif /* __linux__ */
80
#endif
89
81
90
82
/* Avahi */
91
83
/* All Avahi types, constants and functions
137
129
gpgme_ctx_t ctx;
138
130
} mandos_context;
139
131
140
/* global context so signal handler can reach it*/
141
mandos_context mc = { .simple_poll = NULL, .server = NULL,
142
.dh_bits = 1024, .priority = "SECURE256"
143
":!CTYPE-X.509:+CTYPE-OPENPGP" };
144
145
132
/*
146
* Make additional room in "buffer" for at least BUFFER_SIZE more
147
* 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,
148
135
* "buffer_length" is how much is already used.
149
136
*/
150
size_t incbuffer(char **buffer, size_t buffer_length,
137
size_t adjustbuffer(char **buffer, size_t buffer_length,
151
138
size_t buffer_capacity){
152
139
if(buffer_length + BUFFER_SIZE > buffer_capacity){
153
140
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
162
149
/*
163
150
* Initialize GPGME.
164
151
*/
165
static bool init_gpgme(const char *seckey,
152
static bool init_gpgme(mandos_context *mc, const char *seckey,
166
153
const char *pubkey, const char *tempdir){
167
154
int ret;
168
155
gpgme_error_t rc;
189
176
return false;
190
177
}
191
178
192
rc = gpgme_op_import(mc.ctx, pgp_data);
179
rc = gpgme_op_import(mc->ctx, pgp_data);
193
180
if(rc != GPG_ERR_NO_ERROR){
194
181
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
195
182
gpgme_strsource(rc), gpgme_strerror(rc));
205
192
}
206
193
207
194
if(debug){
208
fprintf(stderr, "Initializing GPGME\n");
195
fprintf(stderr, "Initialize gpgme\n");
209
196
}
210
197
211
198
/* Init GPGME */
238
225
}
239
226
240
227
/* Create new GPGME "context" */
241
rc = gpgme_new(&(mc.ctx));
228
rc = gpgme_new(&(mc->ctx));
242
229
if(rc != GPG_ERR_NO_ERROR){
243
230
fprintf(stderr, "bad gpgme_new: %s: %s\n",
244
231
gpgme_strsource(rc), gpgme_strerror(rc));
256
243
* Decrypt OpenPGP data.
257
244
* Returns -1 on error
258
245
*/
259
static ssize_t pgp_packet_decrypt(const char *cryptotext,
246
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
247
const char *cryptotext,
260
248
size_t crypto_size,
261
249
char **plaintext){
262
250
gpgme_data_t dh_crypto, dh_plain;
289
277
290
278
/* Decrypt data from the cryptotext data buffer to the plaintext
291
279
data buffer */
292
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
280
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
293
281
if(rc != GPG_ERR_NO_ERROR){
294
282
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
295
283
gpgme_strsource(rc), gpgme_strerror(rc));
296
284
plaintext_length = -1;
297
285
if(debug){
298
286
gpgme_decrypt_result_t result;
299
result = gpgme_op_decrypt_result(mc.ctx);
287
result = gpgme_op_decrypt_result(mc->ctx);
300
288
if(result == NULL){
301
289
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
302
290
} else {
338
326
339
327
*plaintext = NULL;
340
328
while(true){
341
plaintext_capacity = incbuffer(plaintext,
329
plaintext_capacity = adjustbuffer(plaintext,
342
330
(size_t)plaintext_length,
343
331
plaintext_capacity);
344
332
if(plaintext_capacity == 0){
345
perror("incbuffer");
333
perror("adjustbuffer");
346
334
plaintext_length = -1;
347
335
goto decrypt_end;
348
336
}
394
382
fprintf(stderr, "GnuTLS: %s", string);
395
383
}
396
384
397
static int init_gnutls_global(const char *pubkeyfilename,
385
static int init_gnutls_global(mandos_context *mc,
386
const char *pubkeyfilename,
398
387
const char *seckeyfilename){
399
388
int ret;
400
389
418
407
}
419
408
420
409
/* OpenPGP credentials */
421
gnutls_certificate_allocate_credentials(&mc.cred);
410
gnutls_certificate_allocate_credentials(&mc->cred);
422
411
if(ret != GNUTLS_E_SUCCESS){
423
412
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
424
from
425
-Wunreachable-code
426
*/
413
* from
414
* -Wunreachable-code
415
*/
427
416
safer_gnutls_strerror(ret));
428
417
gnutls_global_deinit();
429
418
return -1;
436
425
}
437
426
438
427
ret = gnutls_certificate_set_openpgp_key_file
439
(mc.cred, pubkeyfilename, seckeyfilename,
428
(mc->cred, pubkeyfilename, seckeyfilename,
440
429
GNUTLS_OPENPGP_FMT_BASE64);
441
430
if(ret != GNUTLS_E_SUCCESS){
442
431
fprintf(stderr,
448
437
}
449
438
450
439
/* GnuTLS server initialization */
451
ret = gnutls_dh_params_init(&mc.dh_params);
440
ret = gnutls_dh_params_init(&mc->dh_params);
452
441
if(ret != GNUTLS_E_SUCCESS){
453
442
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
454
443
" %s\n", safer_gnutls_strerror(ret));
455
444
goto globalfail;
456
445
}
457
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
446
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
458
447
if(ret != GNUTLS_E_SUCCESS){
459
448
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
460
449
safer_gnutls_strerror(ret));
461
450
goto globalfail;
462
451
}
463
452
464
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
453
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
465
454
466
455
return 0;
467
456
468
457
globalfail:
469
458
470
gnutls_certificate_free_credentials(mc.cred);
459
gnutls_certificate_free_credentials(mc->cred);
471
460
gnutls_global_deinit();
472
gnutls_dh_params_deinit(mc.dh_params);
461
gnutls_dh_params_deinit(mc->dh_params);
473
462
return -1;
474
463
}
475
464
476
static int init_gnutls_session(gnutls_session_t *session){
465
static int init_gnutls_session(mandos_context *mc,
466
gnutls_session_t *session){
477
467
int ret;
478
468
/* GnuTLS session creation */
479
469
ret = gnutls_init(session, GNUTLS_SERVER);
484
474
485
475
{
486
476
const char *err;
487
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
477
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
488
478
if(ret != GNUTLS_E_SUCCESS){
489
479
fprintf(stderr, "Syntax error at: %s\n", err);
490
480
fprintf(stderr, "GnuTLS error: %s\n",
495
485
}
496
486
497
487
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
498
mc.cred);
488
mc->cred);
499
489
if(ret != GNUTLS_E_SUCCESS){
500
490
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
501
491
safer_gnutls_strerror(ret));
507
497
gnutls_certificate_server_set_request(*session,
508
498
GNUTLS_CERT_IGNORE);
509
499
510
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
500
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
511
501
512
502
return 0;
513
503
}
519
509
/* Called when a Mandos server is found */
520
510
static int start_mandos_communication(const char *ip, uint16_t port,
521
511
AvahiIfIndex if_index,
522
int af){
512
mandos_context *mc){
523
513
int ret, tcp_sd;
524
514
ssize_t sret;
525
union {
526
struct sockaddr_in in;
527
struct sockaddr_in6 in6;
528
} to;
515
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
529
516
char *buffer = NULL;
530
517
char *decrypted_buffer;
531
518
size_t buffer_length = 0;
533
520
ssize_t decrypted_buffer_size;
534
521
size_t written;
535
522
int retval = 0;
523
char interface[IF_NAMESIZE];
536
524
gnutls_session_t session;
537
int pf; /* Protocol family */
538
539
switch(af){
540
case AF_INET6:
541
pf = PF_INET6;
542
break;
543
case AF_INET:
544
pf = PF_INET;
545
break;
546
default:
547
fprintf(stderr, "Bad address family: %d\n", af);
548
return -1;
549
}
550
551
ret = init_gnutls_session(&session);
525
526
ret = init_gnutls_session(mc, &session);
552
527
if(ret != 0){
553
528
return -1;
554
529
}
555
530
556
531
if(debug){
557
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
532
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
558
533
"\n", ip, port);
559
534
}
560
535
561
tcp_sd = socket(pf, SOCK_STREAM, 0);
536
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
562
537
if(tcp_sd < 0){
563
538
perror("socket");
564
539
return -1;
565
540
}
566
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
567
550
memset(&to, 0, sizeof(to));
568
if(af == AF_INET6){
569
to.in6.sin6_family = (sa_family_t)af;
570
ret = inet_pton(af, ip, &to.in6.sin6_addr);
571
} else { /* IPv4 */
572
to.in.sin_family = (sa_family_t)af;
573
ret = inet_pton(af, ip, &to.in.sin_addr);
574
}
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);
575
555
if(ret < 0 ){
576
556
perror("inet_pton");
577
557
return -1;
580
560
fprintf(stderr, "Bad address: %s\n", ip);
581
561
return -1;
582
562
}
583
if(af == AF_INET6){
584
to.in6.sin6_port = htons(port); /* Spurious warnings from
585
-Wconversion and
586
-Wunreachable-code */
587
588
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
589
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
590
-Wunreachable-code*/
591
if(if_index == AVAHI_IF_UNSPEC){
592
fprintf(stderr, "An IPv6 link-local address is incomplete"
593
" without a network interface\n");
594
return -1;
595
}
596
/* Set the network interface number as scope */
597
to.in6.sin6_scope_id = (uint32_t)if_index;
598
}
599
} else {
600
to.in.sin_port = htons(port); /* Spurious warnings from
563
to.in6.sin6_port = htons(port); /* Spurious warnings from
601
564
-Wconversion and
602
565
-Wunreachable-code */
603
}
566
567
to.in6.sin6_scope_id = (uint32_t)if_index;
604
568
605
569
if(debug){
606
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
607
char interface[IF_NAMESIZE];
608
if(if_indextoname((unsigned int)if_index, interface) == NULL){
609
perror("if_indextoname");
610
} else {
611
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
612
ip, interface, port);
613
}
614
} else {
615
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
616
port);
617
}
618
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
619
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
620
const char *pcret;
621
if(af == AF_INET6){
622
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
623
sizeof(addrstr));
624
} else {
625
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
626
sizeof(addrstr));
627
}
628
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){
629
575
perror("inet_ntop");
630
576
} else {
631
577
if(strcmp(addrstr, ip) != 0){
634
580
}
635
581
}
636
582
637
if(af == AF_INET6){
638
ret = connect(tcp_sd, &to.in6, sizeof(to));
639
} else {
640
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
641
}
583
ret = connect(tcp_sd, &to.in, sizeof(to));
642
584
if(ret < 0){
643
585
perror("connect");
644
586
return -1;
690
632
/* Read OpenPGP packet that contains the wanted password */
691
633
692
634
if(debug){
693
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
635
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
694
636
ip);
695
637
}
696
638
697
639
while(true){
698
buffer_capacity = incbuffer(&buffer, buffer_length,
640
buffer_capacity = adjustbuffer(&buffer, buffer_length,
699
641
buffer_capacity);
700
642
if(buffer_capacity == 0){
701
perror("incbuffer");
643
perror("adjustbuffer");
702
644
retval = -1;
703
645
goto mandos_end;
704
646
}
743
685
gnutls_bye(session, GNUTLS_SHUT_RDWR);
744
686
745
687
if(buffer_length > 0){
746
decrypted_buffer_size = pgp_packet_decrypt(buffer,
688
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
747
689
buffer_length,
748
690
&decrypted_buffer);
749
691
if(decrypted_buffer_size >= 0){
784
726
785
727
static void resolve_callback(AvahiSServiceResolver *r,
786
728
AvahiIfIndex interface,
787
AvahiProtocol proto,
729
AVAHI_GCC_UNUSED AvahiProtocol protocol,
788
730
AvahiResolverEvent event,
789
731
const char *name,
790
732
const char *type,
795
737
AVAHI_GCC_UNUSED AvahiStringList *txt,
796
738
AVAHI_GCC_UNUSED AvahiLookupResultFlags
797
739
flags,
798
AVAHI_GCC_UNUSED void* userdata){
740
void* userdata){
741
mandos_context *mc = userdata;
799
742
assert(r);
800
743
801
744
/* Called whenever a service has been resolved successfully or
806
749
case AVAHI_RESOLVER_FAILURE:
807
750
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
808
751
" of type '%s' in domain '%s': %s\n", name, type, domain,
809
avahi_strerror(avahi_server_errno(mc.server)));
752
avahi_strerror(avahi_server_errno(mc->server)));
810
753
break;
811
754
812
755
case AVAHI_RESOLVER_FOUND:
818
761
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
819
762
ip, (intmax_t)interface, port);
820
763
}
821
int ret = start_mandos_communication(ip, port, interface,
822
avahi_proto_to_af(proto));
764
int ret = start_mandos_communication(ip, port, interface, mc);
823
765
if(ret == 0){
824
avahi_simple_poll_quit(mc.simple_poll);
766
avahi_simple_poll_quit(mc->simple_poll);
825
767
}
826
768
}
827
769
}
837
779
const char *domain,
838
780
AVAHI_GCC_UNUSED AvahiLookupResultFlags
839
781
flags,
840
AVAHI_GCC_UNUSED void* userdata){
782
void* userdata){
783
mandos_context *mc = userdata;
841
784
assert(b);
842
785
843
786
/* Called whenever a new services becomes available on the LAN or
848
791
case AVAHI_BROWSER_FAILURE:
849
792
850
793
fprintf(stderr, "(Avahi browser) %s\n",
851
avahi_strerror(avahi_server_errno(mc.server)));
852
avahi_simple_poll_quit(mc.simple_poll);
794
avahi_strerror(avahi_server_errno(mc->server)));
795
avahi_simple_poll_quit(mc->simple_poll);
853
796
return;
854
797
855
798
case AVAHI_BROWSER_NEW:
858
801
the callback function is called the Avahi server will free the
859
802
resolver for us. */
860
803
861
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
862
name, type, domain, protocol, 0,
863
resolve_callback, NULL) == NULL)
804
if(!(avahi_s_service_resolver_new(mc->server, interface,
805
protocol, name, type, domain,
806
AVAHI_PROTO_INET6, 0,
807
resolve_callback, mc)))
864
808
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
865
name, avahi_strerror(avahi_server_errno(mc.server)));
809
name, avahi_strerror(avahi_server_errno(mc->server)));
866
810
break;
867
811
868
812
case AVAHI_BROWSER_REMOVE:
877
821
}
878
822
}
879
823
880
sig_atomic_t quit_now = 0;
881
882
/* stop main loop after sigterm has been called */
883
static void handle_sigterm(__attribute__((unused)) int sig){
884
if(quit_now){
885
return;
886
}
887
quit_now = 1;
888
int old_errno = errno;
889
if(mc.simple_poll != NULL){
890
avahi_simple_poll_quit(mc.simple_poll);
891
}
892
errno = old_errno;
893
}
894
895
824
int main(int argc, char *argv[]){
896
825
AvahiSServiceBrowser *sb = NULL;
897
826
int error;
898
827
int ret;
899
828
intmax_t tmpmax;
900
char *tmp;
829
int numchars;
901
830
int exitcode = EXIT_SUCCESS;
902
831
const char *interface = "eth0";
903
832
struct ifreq network;
911
840
const char *seckey = PATHDIR "/" SECKEY;
912
841
const char *pubkey = PATHDIR "/" PUBKEY;
913
842
843
mandos_context mc = { .simple_poll = NULL, .server = NULL,
844
.dh_bits = 1024, .priority = "SECURE256"
845
":!CTYPE-X.509:+CTYPE-OPENPGP" };
914
846
bool gnutls_initialized = false;
915
847
bool gpgme_initialized = false;
916
float delay = 2.5f;
917
918
struct sigaction old_sigterm_action;
919
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
848
double delay = 2.5;
920
849
921
850
{
922
851
struct argp_option options[] = {
928
857
.group = 1 },
929
858
{ .name = "interface", .key = 'i',
930
859
.arg = "NAME",
931
.doc = "Network interface that will be used to search for"
932
" Mandos servers",
860
.doc = "Interface that will be used to search for Mandos"
861
" servers",
933
862
.group = 1 },
934
863
{ .name = "seckey", .key = 's',
935
864
.arg = "FILE",
974
903
pubkey = arg;
975
904
break;
976
905
case 129: /* --dh-bits */
977
errno = 0;
978
tmpmax = strtoimax(arg, &tmp, 10);
979
if(errno != 0 or tmp == arg or *tmp != '\0'
980
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'){
981
909
fprintf(stderr, "Bad number of DH bits\n");
982
910
exit(EXIT_FAILURE);
983
911
}
987
915
mc.priority = arg;
988
916
break;
989
917
case 131: /* --delay */
990
errno = 0;
991
delay = strtof(arg, &tmp);
992
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'){
993
920
fprintf(stderr, "Bad delay\n");
994
921
exit(EXIT_FAILURE);
995
922
}
1016
943
}
1017
944
}
1018
945
1019
if(not debug){
1020
avahi_set_log_function(empty_log);
1021
}
1022
1023
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1024
from the signal handler */
1025
/* Initialize the pseudo-RNG for Avahi */
1026
srand((unsigned int) time(NULL));
1027
mc.simple_poll = avahi_simple_poll_new();
1028
if(mc.simple_poll == NULL){
1029
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1030
exitcode = EXIT_FAILURE;
1031
goto end;
1032
}
1033
1034
sigemptyset(&sigterm_action.sa_mask);
1035
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1036
if(ret == -1){
1037
perror("sigaddset");
1038
exitcode = EXIT_FAILURE;
1039
goto end;
1040
}
1041
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1042
if(ret == -1){
1043
perror("sigaddset");
1044
exitcode = EXIT_FAILURE;
1045
goto end;
1046
}
1047
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1048
if(ret == -1){
1049
perror("sigaddset");
1050
exitcode = EXIT_FAILURE;
1051
goto end;
1052
}
1053
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1054
if(ret == -1){
1055
perror("sigaction");
1056
exitcode = EXIT_FAILURE;
1057
goto end;
1058
}
1059
1060
946
/* If the interface is down, bring it up */
1061
if(interface[0] != '\0'){
947
{
1062
948
#ifdef __linux__
1063
949
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1064
950
messages to mess up the prompt */
1065
951
ret = klogctl(8, NULL, 5);
1066
bool restore_loglevel = true;
1067
952
if(ret == -1){
1068
restore_loglevel = false;
1069
953
perror("klogctl");
1070
954
}
1071
#endif /* __linux__ */
955
#endif
1072
956
1073
957
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1074
958
if(sd < 0){
1075
959
perror("socket");
1076
960
exitcode = EXIT_FAILURE;
1077
961
#ifdef __linux__
1078
if(restore_loglevel){
1079
ret = klogctl(7, NULL, 0);
1080
if(ret == -1){
1081
perror("klogctl");
1082
}
962
ret = klogctl(7, NULL, 0);
963
if(ret == -1){
964
perror("klogctl");
1083
965
}
1084
#endif /* __linux__ */
966
#endif
1085
967
goto end;
1086
968
}
1087
969
strcpy(network.ifr_name, interface);
1089
971
if(ret == -1){
1090
972
perror("ioctl SIOCGIFFLAGS");
1091
973
#ifdef __linux__
1092
if(restore_loglevel){
1093
ret = klogctl(7, NULL, 0);
1094
if(ret == -1){
1095
perror("klogctl");
1096
}
974
ret = klogctl(7, NULL, 0);
975
if(ret == -1){
976
perror("klogctl");
1097
977
}
1098
#endif /* __linux__ */
978
#endif
1099
979
exitcode = EXIT_FAILURE;
1100
980
goto end;
1101
981
}
1106
986
perror("ioctl SIOCSIFFLAGS");
1107
987
exitcode = EXIT_FAILURE;
1108
988
#ifdef __linux__
1109
if(restore_loglevel){
1110
ret = klogctl(7, NULL, 0);
1111
if(ret == -1){
1112
perror("klogctl");
1113
}
989
ret = klogctl(7, NULL, 0);
990
if(ret == -1){
991
perror("klogctl");
1114
992
}
1115
#endif /* __linux__ */
993
#endif
1116
994
goto end;
1117
995
}
1118
996
}
1135
1013
perror("close");
1136
1014
}
1137
1015
#ifdef __linux__
1138
if(restore_loglevel){
1139
/* Restores kernel loglevel to default */
1140
ret = klogctl(7, NULL, 0);
1141
if(ret == -1){
1142
perror("klogctl");
1143
}
1016
/* Restores kernel loglevel to default */
1017
ret = klogctl(7, NULL, 0);
1018
if(ret == -1){
1019
perror("klogctl");
1144
1020
}
1145
#endif /* __linux__ */
1021
#endif
1146
1022
}
1147
1023
1148
1024
uid = getuid();
1149
1025
gid = getgid();
1150
1026
1151
errno = 0;
1152
1027
setgid(gid);
1153
1028
if(ret == -1){
1154
1029
perror("setgid");
1159
1034
perror("setuid");
1160
1035
}
1161
1036
1162
ret = init_gnutls_global(pubkey, seckey);
1037
ret = init_gnutls_global(&mc, pubkey, seckey);
1163
1038
if(ret == -1){
1164
1039
fprintf(stderr, "init_gnutls_global failed\n");
1165
1040
exitcode = EXIT_FAILURE;
1174
1049
}
1175
1050
tempdir_created = true;
1176
1051
1177
if(not init_gpgme(pubkey, seckey, tempdir)){
1052
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1178
1053
fprintf(stderr, "init_gpgme failed\n");
1179
1054
exitcode = EXIT_FAILURE;
1180
1055
goto end;
1182
1057
gpgme_initialized = true;
1183
1058
}
1184
1059
1185
if(interface[0] != '\0'){
1186
if_index = (AvahiIfIndex) if_nametoindex(interface);
1187
if(if_index == 0){
1188
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1189
exitcode = EXIT_FAILURE;
1190
goto end;
1191
}
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;
1192
1065
}
1193
1066
1194
1067
if(connect_to != NULL){
1201
1074
goto end;
1202
1075
}
1203
1076
uint16_t port;
1204
errno = 0;
1205
tmpmax = strtoimax(address+1, &tmp, 10);
1206
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1207
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'){
1208
1080
fprintf(stderr, "Bad port number\n");
1209
1081
exitcode = EXIT_FAILURE;
1210
1082
goto end;
1212
1084
port = (uint16_t)tmpmax;
1213
1085
*address = '\0';
1214
1086
address = connect_to;
1215
/* Colon in address indicates IPv6 */
1216
int af;
1217
if(strchr(address, ':') != NULL){
1218
af = AF_INET6;
1219
} else {
1220
af = AF_INET;
1221
}
1222
ret = start_mandos_communication(address, port, if_index, af);
1087
ret = start_mandos_communication(address, port, if_index, &mc);
1223
1088
if(ret < 0){
1224
1089
exitcode = EXIT_FAILURE;
1225
1090
} else {
1227
1092
}
1228
1093
goto end;
1229
1094
}
1230
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
1231
1111
{
1232
1112
AvahiServerConfig config;
1233
1113
/* Do not publish any local Zeroconf records */
1256
1136
1257
1137
/* Create the Avahi service browser */
1258
1138
sb = avahi_s_service_browser_new(mc.server, if_index,
1259
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1260
NULL, 0, browse_callback, NULL);
1139
AVAHI_PROTO_INET6, "_mandos._tcp",
1140
NULL, 0, browse_callback, &mc);
1261
1141
if(sb == NULL){
1262
1142
fprintf(stderr, "Failed to create service browser: %s\n",
1263
1143
avahi_strerror(avahi_server_errno(mc.server)));
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0