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- Committer: Teddy Hogeborn
- Date: 2008-08-16 20:32:58 UTC
- mfrom: (24.1.55 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080816203258-eq4by31vdgxkhs9g
* mandos-keygen.xml: New man page for mandos-keygen(8).
- files added:
- COPYING
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout, ferror() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
38
39
#include <stdint.h> /* uint16_t, uint32_t */
39
40
#include <stddef.h> /* NULL, size_t, ssize_t */
40
#include <stdlib.h> /* free() */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
41
43
#include <stdbool.h> /* bool, true */
42
#include <string.h> /* memset(), strcmp(), strlen, strerror() */
43
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
44
SIOCSIFFLAGS */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
45
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
46
sockaddr_in6, PF_INET6, SOCK_STREAM, INET6_ADDRSTRLEN */
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
47
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
48
53
struct in6_addr, inet_pton(),
49
54
connect() */
50
#include <assert.h>
51
#include <errno.h> /* perror() */
52
#include <time.h>
55
#include <assert.h> /* assert() */
56
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
53
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
54
59
SIOCSIFFLAGS, if_indextoname(),
55
60
if_nametoindex(), IF_NAMESIZE */
56
#include <unistd.h> /* close(), SEEK_SET, off_t, write()*/
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
getuid(), getgid(), setuid(),
63
setgid() */
57
64
#include <netinet/in.h>
58
65
#include <arpa/inet.h> /* inet_pton(), htons */
59
#include <iso646.h> /* not */
60
#include <argp.h> /* struct argp_option,
61
struct argp_state, struct argp,
62
argp_parse() */
66
#include <iso646.h> /* not, and */
67
#include <argp.h> /* struct argp_option, error_t, struct
68
argp_state, struct argp,
69
argp_parse(), ARGP_KEY_ARG,
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
63
71
64
72
/* Avahi */
65
#include <avahi-core/core.h> /* AvahiSimplePoll, AvahiServer,
66
AvahiIfIndex */
73
/* All Avahi types, constants and functions
74
Avahi*, avahi_*,
75
AVAHI_* */
76
#include <avahi-core/core.h>
67
77
#include <avahi-core/lookup.h>
68
#include <avahi-core/log.h> /* AvahiLogLevel */
78
#include <avahi-core/log.h>
69
79
#include <avahi-common/simple-watch.h>
70
80
#include <avahi-common/malloc.h>
71
81
#include <avahi-common/error.h>
72
82
73
83
/* GnuTLS */
74
#include <gnutls/gnutls.h> /* gnutls_certificate_credentials_t,
75
gnutls_dh_params_t,
76
gnutls_strerror(),
77
gnutls_global_init(),
78
gnutls_global_set_log_level(),
79
gnutls_global_set_log_function(),
80
gnutls_certificate_allocate_credentials(),
81
gnutls_global_deinit(),
82
gnutls_dh_params_init(),
83
gnutls_dh_params_generate(),
84
gnutls_certificate_set_dh_params(),
85
gnutls_certificate_free_credentials(),
86
gnutls_session_t, gnutls_init(),
87
gnutls_priority_set_direct(),
88
gnutls_deinit(),
89
gnutls_credentials_set(),
90
gnutls_certificate_server_set_request(),
91
gnutls_dh_set_prime_bits(),
92
gnutls_transport_set_ptr(),
93
gnutls_transport_ptr_t,
94
gnutls_handshake(),
95
gnutls_record_recv()
96
gnutls_perror(), gnutls_bye(),
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
85
functions:
86
gnutls_*
97
87
init_gnutls_session(),
98
GNUTLS_E_SUCCESS,
99
GNUTLS_CRD_CERTIFICATE,
100
GNUTLS_CERT_IGNORE,
101
GNUTLS_E_INTERRUPTED,
102
GNUTLS_E_AGAIN,
103
GNUTLS_E_REHANDSHAKE,
104
GNUTLS_SHUT_RDWR, */
105
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
106
GNUTLS_OPENPGP_FMT_BASE64 */
88
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
90
GNUTLS_OPENPGP_FMT_BASE64 */
107
91
108
92
/* GPGME */
109
#include <gpgme.h> /* gpgme_data_t, gpgme_ctx_t,
110
gpgme_error_t, gpgme_engine_info_t,
111
gpgme_check_version(),
112
gpgme_engine_check_version(),
113
gpgme_strsource(),
114
gpgme_strerror(),
115
gpgme_get_engine_info(),
116
gpgme_set_engine_info(),
117
gpgme_data_new_from_mem(),
118
gpgme_data_new(), gpgme_new(),
119
gpgme_op_decrypt(),
120
gpgme_decrypt_result_t,
121
gpgme_op_decrypt_result(),
122
gpgme_recipient_t,
123
gpgme_pubkey_algo_name(),
124
gpgme_data_seek(),
125
gpgme_data_read(),
126
gpgme_data_release()
93
#include <gpgme.h> /* All GPGME types, constants and
94
functions:
95
gpgme_*
127
96
GPGME_PROTOCOL_OpenPGP,
128
GPG_ERR_NO_ERROR,
129
GPG_ERR_NO_SECKEY, */
97
GPG_ERR_NO_* */
130
98
131
99
#define BUFFER_SIZE 256
132
100
133
101
bool debug = false;
134
102
static const char *keydir = "/conf/conf.d/mandos";
135
103
static const char mandos_protocol_version[] = "1";
136
const char *argp_program_version = "mandosclient 0.9";
104
const char *argp_program_version = "password-request 1.0";
137
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
138
106
139
107
/* Used for passing in values through the Avahi callback functions */
261
229
} else {
262
230
fprintf(stderr, "Unsupported algorithm: %s\n",
263
231
result->unsupported_algorithm);
264
fprintf(stderr, "Wrong key usage: %d\n",
232
fprintf(stderr, "Wrong key usage: %u\n",
265
233
result->wrong_key_usage);
266
234
if(result->file_name != NULL){
267
235
fprintf(stderr, "File name: %s\n", result->file_name);
347
315
}
348
316
349
317
static int init_gnutls_global(mandos_context *mc,
350
const char *pubkeyfile,
351
const char *seckeyfile){
318
const char *pubkeyfilename,
319
const char *seckeyfilename){
352
320
int ret;
353
321
354
322
if(debug){
355
323
fprintf(stderr, "Initializing GnuTLS\n");
356
324
}
357
358
if ((ret = gnutls_global_init ())
359
!= GNUTLS_E_SUCCESS) {
325
326
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
360
328
fprintf (stderr, "GnuTLS global_init: %s\n",
361
329
safer_gnutls_strerror(ret));
362
330
return -1;
371
339
}
372
340
373
341
/* OpenPGP credentials */
374
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
375
!= GNUTLS_E_SUCCESS) {
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
376
344
fprintf (stderr, "GnuTLS memory error: %s\n",
377
345
safer_gnutls_strerror(ret));
378
346
gnutls_global_deinit ();
381
349
382
350
if(debug){
383
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
384
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
385
seckeyfile);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
386
354
}
387
355
388
356
ret = gnutls_certificate_set_openpgp_key_file
389
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
390
359
if (ret != GNUTLS_E_SUCCESS) {
391
360
fprintf(stderr,
392
361
"Error[%d] while reading the OpenPGP key pair ('%s',"
393
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
394
363
fprintf(stdout, "The GnuTLS error is: %s\n",
395
364
safer_gnutls_strerror(ret));
396
365
goto globalfail;
488
457
}
489
458
490
459
if(debug){
491
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
492
ip, port);
460
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
461
"\n", ip, port);
493
462
}
494
463
495
464
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
506
475
fprintf(stderr, "Binding to interface %s\n", interface);
507
476
}
508
477
509
memset(&to,0,sizeof(to)); /* Spurious warning */
478
memset(&to, 0, sizeof(to)); /* Spurious warning */
510
479
to.in6.sin6_family = AF_INET6;
511
480
/* It would be nice to have a way to detect if we were passed an
512
481
IPv4 address here. Now we assume an IPv6 address. */
519
488
fprintf(stderr, "Bad address: %s\n", ip);
520
489
return -1;
521
490
}
522
to.in6.sin6_port = htons(port); /* Spurious warning */
491
to.in6.sin6_port = htons(port); /* Spurious warning */
523
492
524
493
to.in6.sin6_scope_id = (uint32_t)if_index;
525
494
526
495
if(debug){
527
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
496
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
497
port);
528
498
char addrstr[INET6_ADDRSTRLEN] = "";
529
499
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
530
500
sizeof(addrstr)) == NULL){
571
541
}
572
542
573
543
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
574
575
ret = gnutls_handshake (session);
544
545
do{
546
ret = gnutls_handshake (session);
547
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
576
548
577
549
if (ret != GNUTLS_E_SUCCESS){
578
550
if(debug){
610
582
case GNUTLS_E_AGAIN:
611
583
break;
612
584
case GNUTLS_E_REHANDSHAKE:
613
ret = gnutls_handshake (session);
585
do{
586
ret = gnutls_handshake (session);
587
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
614
588
if (ret < 0){
615
589
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
616
590
gnutls_perror (ret);
705
679
char ip[AVAHI_ADDRESS_STR_MAX];
706
680
avahi_address_snprint(ip, sizeof(ip), address);
707
681
if(debug){
708
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
709
" port %d\n", name, host_name, ip, interface, port);
682
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
683
PRIu16 ") on port %d\n", name, host_name, ip,
684
interface, port);
710
685
}
711
686
int ret = start_mandos_communication(ip, port, interface, mc);
712
687
if (ret == 0){
713
exit(EXIT_SUCCESS);
688
avahi_simple_poll_quit(mc->simple_poll);
714
689
}
715
690
}
716
691
}
770
745
771
746
/* Combines file name and path and returns the malloced new
772
747
string. some sane checks could/should be added */
773
static const char *combinepath(const char *first, const char *second){
774
size_t f_len = strlen(first);
775
size_t s_len = strlen(second);
776
char *tmp = malloc(f_len + s_len + 2);
777
if (tmp == NULL){
748
static char *combinepath(const char *first, const char *second){
749
char *tmp;
750
int ret = asprintf(&tmp, "%s/%s", first, second);
751
if(ret < 0){
778
752
return NULL;
779
753
}
780
if(f_len > 0){
781
memcpy(tmp, first, f_len); /* Spurious warning */
782
}
783
tmp[f_len] = '/';
784
if(s_len > 0){
785
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
786
}
787
tmp[f_len + 1 + s_len] = '\0';
788
754
return tmp;
789
755
}
790
756
801
767
gid_t gid;
802
768
char *connect_to = NULL;
803
769
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
804
const char *pubkeyfile = "pubkey.txt";
805
const char *seckeyfile = "seckey.txt";
770
char *pubkeyfilename = NULL;
771
char *seckeyfilename = NULL;
772
const char *pubkeyname = "pubkey.txt";
773
const char *seckeyname = "seckey.txt";
806
774
mandos_context mc = { .simple_poll = NULL, .server = NULL,
807
775
.dh_bits = 1024, .priority = "SECURE256"};
808
776
bool gnutls_initalized = false;
860
828
keydir = arg;
861
829
break;
862
830
case 's':
863
seckeyfile = arg;
831
seckeyname = arg;
864
832
break;
865
833
case 'p':
866
pubkeyfile = arg;
834
pubkeyname = arg;
867
835
break;
868
836
case 129:
869
837
errno = 0;
878
846
break;
879
847
case ARGP_KEY_ARG:
880
848
argp_usage (state);
849
case ARGP_KEY_END:
881
850
break;
882
case ARGP_KEY_END:
883
break;
884
851
default:
885
852
return ARGP_ERR_UNKNOWN;
886
853
}
891
858
.args_doc = "",
892
859
.doc = "Mandos client -- Get and decrypt"
893
860
" passwords from mandos server" };
894
argp_parse (&argp, argc, argv, 0, 0, NULL);
861
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
862
if (ret == ARGP_ERR_UNKNOWN){
863
fprintf(stderr, "Unknown error while parsing arguments\n");
864
exitcode = EXIT_FAILURE;
865
goto end;
866
}
895
867
}
896
868
897
pubkeyfile = combinepath(keydir, pubkeyfile);
898
if (pubkeyfile == NULL){
869
pubkeyfilename = combinepath(keydir, pubkeyname);
870
if (pubkeyfilename == NULL){
899
871
perror("combinepath");
900
872
exitcode = EXIT_FAILURE;
901
873
goto end;
902
874
}
903
875
904
seckeyfile = combinepath(keydir, seckeyfile);
905
if (seckeyfile == NULL){
876
seckeyfilename = combinepath(keydir, seckeyname);
877
if (seckeyfilename == NULL){
906
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
907
880
goto end;
908
881
}
909
882
910
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
883
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
911
884
if (ret == -1){
912
fprintf(stderr, "init_gnutls_global\n");
885
fprintf(stderr, "init_gnutls_global failed\n");
886
exitcode = EXIT_FAILURE;
913
887
goto end;
914
888
} else {
915
889
gnutls_initalized = true;
916
890
}
917
891
892
/* If the interface is down, bring it up */
893
{
894
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
895
if(sd < 0) {
896
perror("socket");
897
exitcode = EXIT_FAILURE;
898
goto end;
899
}
900
strcpy(network.ifr_name, interface); /* Spurious warning */
901
ret = ioctl(sd, SIOCGIFFLAGS, &network);
902
if(ret == -1){
903
perror("ioctl SIOCGIFFLAGS");
904
exitcode = EXIT_FAILURE;
905
goto end;
906
}
907
if((network.ifr_flags & IFF_UP) == 0){
908
network.ifr_flags |= IFF_UP;
909
ret = ioctl(sd, SIOCSIFFLAGS, &network);
910
if(ret == -1){
911
perror("ioctl SIOCSIFFLAGS");
912
exitcode = EXIT_FAILURE;
913
goto end;
914
}
915
}
916
close(sd);
917
}
918
918
919
uid = getuid();
919
920
gid = getgid();
920
921
921
922
ret = setuid(uid);
922
923
if (ret == -1){
923
924
perror("setuid");
961
962
goto end;
962
963
}
963
964
964
/* If the interface is down, bring it up */
965
{
966
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
967
if(sd < 0) {
968
perror("socket");
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
strcpy(network.ifr_name, interface); /* Spurious warning */
973
ret = ioctl(sd, SIOCGIFFLAGS, &network);
974
if(ret == -1){
975
perror("ioctl SIOCGIFFLAGS");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
}
979
if((network.ifr_flags & IFF_UP) == 0){
980
network.ifr_flags |= IFF_UP;
981
ret = ioctl(sd, SIOCSIFFLAGS, &network);
982
if(ret == -1){
983
perror("ioctl SIOCSIFFLAGS");
984
exitcode = EXIT_FAILURE;
985
goto end;
986
}
987
}
988
close(sd);
989
}
990
991
965
if (not debug){
992
966
avahi_set_log_function(empty_log);
993
967
}
1065
1039
1066
1040
if (mc.simple_poll != NULL)
1067
1041
avahi_simple_poll_free(mc.simple_poll);
1068
free(pubkeyfile);
1069
free(seckeyfile);
1042
free(pubkeyfilename);
1043
free(seckeyfilename);
1070
1044
1071
1045
if (gnutls_initalized){
1072
gnutls_certificate_free_credentials (mc.cred);
1046
gnutls_certificate_free_credentials(mc.cred);
1073
1047
gnutls_global_deinit ();
1074
1048
}
1075
1049
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