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- Committer: Teddy Hogeborn
- Date: 2016-02-29 21:28:39 UTC
- Revision ID: teddy@recompile.se-20160229212839-hoz3rw1us3uds68n
Tags: version-1.7.3-1
* Makefile (version): Changed to "1.7.3".
* NEWS (Version 1.7.3): New entry.
* debian/changelog (1.7.3-1): - '' -
* NEWS (Version 1.7.3): New entry.
* debian/changelog (1.7.3-1): - '' -
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- dracut-module
- files modified:
- .bzrignore
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008-2019 Teddy Hogeborn
13
* Copyright © 2008-2019 Björn Påhlsson
14
*
15
* This file is part of Mandos.
16
*
17
* Mandos is free software: you can redistribute it and/or modify it
18
* under the terms of the GNU General Public License as published by
19
* the Free Software Foundation, either version 3 of the License, or
20
* (at your option) any later version.
21
*
22
* Mandos is distributed in the hope that it will be useful, but
12
* Copyright © 2008-2016 Teddy Hogeborn
13
* Copyright © 2008-2016 Björn Påhlsson
14
*
15
* This program is free software: you can redistribute it and/or
16
* modify it under the terms of the GNU General Public License as
17
* published by the Free Software Foundation, either version 3 of the
18
* License, or (at your option) any later version.
19
*
20
* This program is distributed in the hope that it will be useful, but
23
21
* WITHOUT ANY WARRANTY; without even the implied warranty of
24
22
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25
23
* General Public License for more details.
26
24
*
27
25
* You should have received a copy of the GNU General Public License
28
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
26
* along with this program. If not, see
27
* <http://www.gnu.org/licenses/>.
29
28
*
30
29
* Contact the authors at <mandos@recompile.se>.
31
30
*/
48
47
strtof(), abort() */
49
48
#include <stdbool.h> /* bool, false, true */
50
49
#include <string.h> /* strcmp(), strlen(), strerror(),
51
asprintf(), strncpy(), strsignal()
52
*/
50
asprintf(), strncpy() */
53
51
#include <sys/ioctl.h> /* ioctl */
54
52
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
55
53
sockaddr_in6, PF_INET6,
123
121
gnutls_*
124
122
init_gnutls_session(),
125
123
GNUTLS_* */
126
#if GNUTLS_VERSION_NUMBER < 0x030600
127
124
#include <gnutls/openpgp.h>
128
125
/* gnutls_certificate_set_openpgp_key_file(),
129
126
GNUTLS_OPENPGP_FMT_BASE64 */
130
#elif GNUTLS_VERSION_NUMBER >= 0x030606
131
#include <gnutls/x509.h> /* gnutls_pkcs_encrypt_flags_t,
132
GNUTLS_PKCS_PLAIN,
133
GNUTLS_PKCS_NULL_PASSWORD */
134
#endif
135
127
136
128
/* GPGME */
137
129
#include <gpgme.h> /* All GPGME types, constants and
145
137
#define PATHDIR "/conf/conf.d/mandos"
146
138
#define SECKEY "seckey.txt"
147
139
#define PUBKEY "pubkey.txt"
148
#define TLS_PRIVKEY "tls-privkey.pem"
149
#define TLS_PUBKEY "tls-pubkey.pem"
150
140
#define HOOKDIR "/lib/mandos/network-hooks.d"
151
141
152
142
bool debug = false;
280
270
return true;
281
271
}
282
272
283
/* Set effective uid to 0, return errno */
284
__attribute__((warn_unused_result))
285
int raise_privileges(void){
286
int old_errno = errno;
287
int ret = 0;
288
if(seteuid(0) == -1){
289
ret = errno;
290
}
291
errno = old_errno;
292
return ret;
293
}
294
295
/* Set effective and real user ID to 0. Return errno. */
296
__attribute__((warn_unused_result))
297
int raise_privileges_permanently(void){
298
int old_errno = errno;
299
int ret = raise_privileges();
300
if(ret != 0){
301
errno = old_errno;
302
return ret;
303
}
304
if(setuid(0) == -1){
305
ret = errno;
306
}
307
errno = old_errno;
308
return ret;
309
}
310
311
/* Set effective user ID to unprivileged saved user ID */
312
__attribute__((warn_unused_result))
313
int lower_privileges(void){
314
int old_errno = errno;
315
int ret = 0;
316
if(seteuid(uid) == -1){
317
ret = errno;
318
}
319
errno = old_errno;
320
return ret;
321
}
322
323
/* Lower privileges permanently */
324
__attribute__((warn_unused_result))
325
int lower_privileges_permanently(void){
326
int old_errno = errno;
327
int ret = 0;
328
if(setuid(uid) == -1){
329
ret = errno;
330
}
331
errno = old_errno;
332
return ret;
333
}
334
335
273
/*
336
274
* Initialize GPGME.
337
275
*/
357
295
return false;
358
296
}
359
297
360
/* Workaround for systems without a real-time clock; see also
361
Debian bug #894495: <https://bugs.debian.org/894495> */
362
do {
363
{
364
time_t currtime = time(NULL);
365
if(currtime != (time_t)-1){
366
struct tm tm;
367
if(gmtime_r(&currtime, &tm) == NULL) {
368
perror_plus("gmtime_r");
369
break;
370
}
371
if(tm.tm_year != 70 or tm.tm_mon != 0){
372
break;
373
}
374
if(debug){
375
fprintf_plus(stderr, "System clock is January 1970");
376
}
377
} else {
378
if(debug){
379
fprintf_plus(stderr, "System clock is invalid");
380
}
381
}
382
}
383
struct stat keystat;
384
ret = fstat(fd, &keystat);
385
if(ret != 0){
386
perror_plus("fstat");
387
break;
388
}
389
ret = raise_privileges();
390
if(ret != 0){
391
errno = ret;
392
perror_plus("Failed to raise privileges");
393
break;
394
}
395
if(debug){
396
fprintf_plus(stderr,
397
"Setting system clock to key file mtime");
398
}
399
time_t keytime = keystat.st_mtim.tv_sec;
400
if(stime(&keytime) != 0){
401
perror_plus("stime");
402
}
403
ret = lower_privileges();
404
if(ret != 0){
405
errno = ret;
406
perror_plus("Failed to lower privileges");
407
}
408
} while(false);
409
410
298
rc = gpgme_data_new_from_fd(&pgp_data, fd);
411
299
if(rc != GPG_ERR_NO_ERROR){
412
300
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
420
308
gpgme_strsource(rc), gpgme_strerror(rc));
421
309
return false;
422
310
}
423
{
424
gpgme_import_result_t import_result
425
= gpgme_op_import_result(mc->ctx);
426
if((import_result->imported < 1
427
or import_result->not_imported > 0)
428
and import_result->unchanged == 0){
429
fprintf_plus(stderr, "bad gpgme_op_import_results:\n");
430
fprintf_plus(stderr,
431
"The total number of considered keys: %d\n",
432
import_result->considered);
433
fprintf_plus(stderr,
434
"The number of keys without user ID: %d\n",
435
import_result->no_user_id);
436
fprintf_plus(stderr,
437
"The total number of imported keys: %d\n",
438
import_result->imported);
439
fprintf_plus(stderr, "The number of imported RSA keys: %d\n",
440
import_result->imported_rsa);
441
fprintf_plus(stderr, "The number of unchanged keys: %d\n",
442
import_result->unchanged);
443
fprintf_plus(stderr, "The number of new user IDs: %d\n",
444
import_result->new_user_ids);
445
fprintf_plus(stderr, "The number of new sub keys: %d\n",
446
import_result->new_sub_keys);
447
fprintf_plus(stderr, "The number of new signatures: %d\n",
448
import_result->new_signatures);
449
fprintf_plus(stderr, "The number of new revocations: %d\n",
450
import_result->new_revocations);
451
fprintf_plus(stderr,
452
"The total number of secret keys read: %d\n",
453
import_result->secret_read);
454
fprintf_plus(stderr,
455
"The number of imported secret keys: %d\n",
456
import_result->secret_imported);
457
fprintf_plus(stderr,
458
"The number of unchanged secret keys: %d\n",
459
import_result->secret_unchanged);
460
fprintf_plus(stderr, "The number of keys not imported: %d\n",
461
import_result->not_imported);
462
for(gpgme_import_status_t import_status
463
= import_result->imports;
464
import_status != NULL;
465
import_status = import_status->next){
466
fprintf_plus(stderr, "Import status for key: %s\n",
467
import_status->fpr);
468
if(import_status->result != GPG_ERR_NO_ERROR){
469
fprintf_plus(stderr, "Import result: %s: %s\n",
470
gpgme_strsource(import_status->result),
471
gpgme_strerror(import_status->result));
472
}
473
fprintf_plus(stderr, "Key status:\n");
474
fprintf_plus(stderr,
475
import_status->status & GPGME_IMPORT_NEW
476
? "The key was new.\n"
477
: "The key was not new.\n");
478
fprintf_plus(stderr,
479
import_status->status & GPGME_IMPORT_UID
480
? "The key contained new user IDs.\n"
481
: "The key did not contain new user IDs.\n");
482
fprintf_plus(stderr,
483
import_status->status & GPGME_IMPORT_SIG
484
? "The key contained new signatures.\n"
485
: "The key did not contain new signatures.\n");
486
fprintf_plus(stderr,
487
import_status->status & GPGME_IMPORT_SUBKEY
488
? "The key contained new sub keys.\n"
489
: "The key did not contain new sub keys.\n");
490
fprintf_plus(stderr,
491
import_status->status & GPGME_IMPORT_SECRET
492
? "The key contained a secret key.\n"
493
: "The key did not contain a secret key.\n");
494
}
495
return false;
496
}
497
}
498
311
499
312
ret = close(fd);
500
313
if(ret == -1){
541
354
/* Create new GPGME "context" */
542
355
rc = gpgme_new(&(mc->ctx));
543
356
if(rc != GPG_ERR_NO_ERROR){
544
fprintf_plus(stderr, "bad gpgme_new: %s: %s\n",
545
gpgme_strsource(rc), gpgme_strerror(rc));
357
fprintf_plus(stderr, "Mandos plugin mandos-client: "
358
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
359
gpgme_strerror(rc));
546
360
return false;
547
361
}
548
362
584
398
/* Create new empty GPGME data buffer for the plaintext */
585
399
rc = gpgme_data_new(&dh_plain);
586
400
if(rc != GPG_ERR_NO_ERROR){
587
fprintf_plus(stderr, "bad gpgme_data_new: %s: %s\n",
401
fprintf_plus(stderr, "Mandos plugin mandos-client: "
402
"bad gpgme_data_new: %s: %s\n",
588
403
gpgme_strsource(rc), gpgme_strerror(rc));
589
404
gpgme_data_release(dh_crypto);
590
405
return -1;
603
418
if(result == NULL){
604
419
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
605
420
} else {
606
if(result->unsupported_algorithm != NULL) {
607
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
608
result->unsupported_algorithm);
609
}
610
fprintf_plus(stderr, "Wrong key usage: %s\n",
611
result->wrong_key_usage ? "Yes" : "No");
421
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
422
result->unsupported_algorithm);
423
fprintf_plus(stderr, "Wrong key usage: %u\n",
424
result->wrong_key_usage);
612
425
if(result->file_name != NULL){
613
426
fprintf_plus(stderr, "File name: %s\n", result->file_name);
614
427
}
615
616
for(gpgme_recipient_t r = result->recipients; r != NULL;
617
r = r->next){
428
gpgme_recipient_t recipient;
429
recipient = result->recipients;
430
while(recipient != NULL){
618
431
fprintf_plus(stderr, "Public key algorithm: %s\n",
619
gpgme_pubkey_algo_name(r->pubkey_algo));
620
fprintf_plus(stderr, "Key ID: %s\n", r->keyid);
432
gpgme_pubkey_algo_name
433
(recipient->pubkey_algo));
434
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
621
435
fprintf_plus(stderr, "Secret key available: %s\n",
622
r->status == GPG_ERR_NO_SECKEY ? "No" : "Yes");
436
recipient->status == GPG_ERR_NO_SECKEY
437
? "No" : "Yes");
438
recipient = recipient->next;
623
439
}
624
440
}
625
441
}
707
523
const char *dhparamsfilename,
708
524
mandos_context *mc){
709
525
int ret;
526
unsigned int uret;
710
527
711
528
if(debug){
712
529
fprintf_plus(stderr, "Initializing GnuTLS\n");
729
546
}
730
547
731
548
if(debug){
732
fprintf_plus(stderr, "Attempting to use public key %s and"
733
" private key %s as GnuTLS credentials\n",
549
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
550
" secret key %s as GnuTLS credentials\n",
734
551
pubkeyfilename,
735
552
seckeyfilename);
736
553
}
737
554
738
#if GNUTLS_VERSION_NUMBER >= 0x030606
739
ret = gnutls_certificate_set_rawpk_key_file
740
(mc->cred, pubkeyfilename, seckeyfilename,
741
GNUTLS_X509_FMT_PEM, /* format */
742
NULL, /* pass */
743
/* key_usage */
744
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
745
NULL, /* names */
746
0, /* names_length */
747
/* privkey_flags */
748
GNUTLS_PKCS_PLAIN | GNUTLS_PKCS_NULL_PASSWORD,
749
0); /* pkcs11_flags */
750
#elif GNUTLS_VERSION_NUMBER < 0x030600
751
555
ret = gnutls_certificate_set_openpgp_key_file
752
556
(mc->cred, pubkeyfilename, seckeyfilename,
753
557
GNUTLS_OPENPGP_FMT_BASE64);
754
#else
755
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
756
#endif
757
558
if(ret != GNUTLS_E_SUCCESS){
758
559
fprintf_plus(stderr,
759
"Error[%d] while reading the key pair ('%s',"
560
"Error[%d] while reading the OpenPGP key pair ('%s',"
760
561
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
761
562
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
762
563
safer_gnutls_strerror(ret));
810
611
}
811
612
params.size += (unsigned int)bytes_read;
812
613
}
813
ret = close(dhpfile);
814
if(ret == -1){
815
perror_plus("close");
816
}
817
614
if(params.data == NULL){
818
615
dhparamsfilename = NULL;
819
616
}
828
625
safer_gnutls_strerror(ret));
829
626
dhparamsfilename = NULL;
830
627
}
831
free(params.data);
832
628
} while(false);
833
629
}
834
630
if(dhparamsfilename == NULL){
835
631
if(mc->dh_bits == 0){
836
#if GNUTLS_VERSION_NUMBER < 0x030600
837
632
/* Find out the optimal number of DH bits */
838
633
/* Try to read the private key file */
839
634
gnutls_datum_t buffer = { .data = NULL, .size = 0 };
919
714
}
920
715
}
921
716
}
922
unsigned int uret = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, sec_param);
717
uret = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, sec_param);
923
718
if(uret != 0){
924
719
mc->dh_bits = uret;
925
720
if(debug){
937
732
safer_gnutls_strerror(ret));
938
733
goto globalfail;
939
734
}
940
#endif
941
} else { /* dh_bits != 0 */
942
if(debug){
943
fprintf_plus(stderr, "DH bits explicitly set to %u\n",
944
mc->dh_bits);
945
}
946
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
947
if(ret != GNUTLS_E_SUCCESS){
948
fprintf_plus(stderr, "Error in GnuTLS prime generation (%u"
949
" bits): %s\n", mc->dh_bits,
950
safer_gnutls_strerror(ret));
951
goto globalfail;
952
}
953
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
735
} else if(debug){
736
fprintf_plus(stderr, "DH bits explicitly set to %u\n",
737
mc->dh_bits);
738
}
739
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
740
if(ret != GNUTLS_E_SUCCESS){
741
fprintf_plus(stderr, "Error in GnuTLS prime generation (%u"
742
" bits): %s\n", mc->dh_bits,
743
safer_gnutls_strerror(ret));
744
goto globalfail;
954
745
}
955
746
}
747
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
956
748
957
749
return 0;
958
750
969
761
int ret;
970
762
/* GnuTLS session creation */
971
763
do {
972
ret = gnutls_init(session, (GNUTLS_SERVER
973
#if GNUTLS_VERSION_NUMBER >= 0x030506
974
| GNUTLS_NO_TICKETS
975
#endif
976
#if GNUTLS_VERSION_NUMBER >= 0x030606
977
| GNUTLS_ENABLE_RAWPK
978
#endif
979
));
764
ret = gnutls_init(session, GNUTLS_SERVER);
980
765
if(quit_now){
981
766
return -1;
982
767
}
1030
815
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
1031
816
__attribute__((unused)) const char *txt){}
1032
817
818
/* Set effective uid to 0, return errno */
819
__attribute__((warn_unused_result))
820
error_t raise_privileges(void){
821
error_t old_errno = errno;
822
error_t ret_errno = 0;
823
if(seteuid(0) == -1){
824
ret_errno = errno;
825
}
826
errno = old_errno;
827
return ret_errno;
828
}
829
830
/* Set effective and real user ID to 0. Return errno. */
831
__attribute__((warn_unused_result))
832
error_t raise_privileges_permanently(void){
833
error_t old_errno = errno;
834
error_t ret_errno = raise_privileges();
835
if(ret_errno != 0){
836
errno = old_errno;
837
return ret_errno;
838
}
839
if(setuid(0) == -1){
840
ret_errno = errno;
841
}
842
errno = old_errno;
843
return ret_errno;
844
}
845
846
/* Set effective user ID to unprivileged saved user ID */
847
__attribute__((warn_unused_result))
848
error_t lower_privileges(void){
849
error_t old_errno = errno;
850
error_t ret_errno = 0;
851
if(seteuid(uid) == -1){
852
ret_errno = errno;
853
}
854
errno = old_errno;
855
return ret_errno;
856
}
857
858
/* Lower privileges permanently */
859
__attribute__((warn_unused_result))
860
error_t lower_privileges_permanently(void){
861
error_t old_errno = errno;
862
error_t ret_errno = 0;
863
if(setuid(uid) == -1){
864
ret_errno = errno;
865
}
866
errno = old_errno;
867
return ret_errno;
868
}
869
1033
870
/* Helper function to add_local_route() and delete_local_route() */
1034
871
__attribute__((nonnull, warn_unused_result))
1035
872
static bool add_delete_local_route(const bool add,
1074
911
ret = setgid(0);
1075
912
if(ret == -1){
1076
913
perror_plus("setgid");
1077
close(devnull);
1078
914
_exit(EX_NOPERM);
1079
915
}
1080
916
/* Reset supplementary groups */
1082
918
ret = setgroups(0, NULL);
1083
919
if(ret == -1){
1084
920
perror_plus("setgroups");
1085
close(devnull);
1086
921
_exit(EX_NOPERM);
1087
922
}
1088
923
}
1089
924
ret = dup2(devnull, STDIN_FILENO);
1090
925
if(ret == -1){
1091
926
perror_plus("dup2(devnull, STDIN_FILENO)");
1092
close(devnull);
1093
927
_exit(EX_OSERR);
1094
928
}
1095
929
ret = close(devnull);
1096
930
if(ret == -1){
1097
931
perror_plus("close");
932
_exit(EX_OSERR);
1098
933
}
1099
934
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1100
935
if(ret == -1){
1135
970
}
1136
971
if(pid == -1){
1137
972
perror_plus("fork");
1138
close(devnull);
1139
973
return false;
1140
974
}
1141
ret = close(devnull);
1142
if(ret == -1){
1143
perror_plus("close");
1144
}
1145
975
int status;
1146
976
pid_t pret = -1;
1147
977
errno = 0;
1247
1077
bool match = false;
1248
1078
{
1249
1079
char *interface = NULL;
1250
while((interface = argz_next(mc->interfaces,
1251
mc->interfaces_size,
1252
interface))){
1080
while((interface=argz_next(mc->interfaces, mc->interfaces_size,
1081
interface))){
1253
1082
if(if_nametoindex(interface) == (unsigned int)if_index){
1254
1083
match = true;
1255
1084
break;
1408
1237
with an explicit route added with the server's address.
1409
1238
1410
1239
Avahi bug reference:
1411
https://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1240
http://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1412
1241
https://bugs.debian.org/587961
1413
1242
*/
1414
1243
if(debug){
1594
1423
&decrypted_buffer, mc);
1595
1424
if(decrypted_buffer_size >= 0){
1596
1425
1597
clearerr(stdout);
1598
1426
written = 0;
1599
1427
while(written < (size_t) decrypted_buffer_size){
1600
1428
if(quit_now){
1616
1444
}
1617
1445
written += (size_t)ret;
1618
1446
}
1619
ret = fflush(stdout);
1620
if(ret != 0){
1621
int e = errno;
1622
if(debug){
1623
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
1624
strerror(errno));
1625
}
1626
errno = e;
1627
goto mandos_end;
1628
}
1629
1447
retval = 0;
1630
1448
}
1631
1449
}
1662
1480
return retval;
1663
1481
}
1664
1482
1483
__attribute__((nonnull))
1665
1484
static void resolve_callback(AvahiSServiceResolver *r,
1666
1485
AvahiIfIndex interface,
1667
1486
AvahiProtocol proto,
1804
1623
__attribute__((nonnull, warn_unused_result))
1805
1624
bool get_flags(const char *ifname, struct ifreq *ifr){
1806
1625
int ret;
1807
int old_errno;
1626
error_t ret_errno;
1808
1627
1809
1628
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1810
1629
if(s < 0){
1811
old_errno = errno;
1630
ret_errno = errno;
1812
1631
perror_plus("socket");
1813
errno = old_errno;
1632
errno = ret_errno;
1814
1633
return false;
1815
1634
}
1816
1635
strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
1818
1637
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1819
1638
if(ret == -1){
1820
1639
if(debug){
1821
old_errno = errno;
1640
ret_errno = errno;
1822
1641
perror_plus("ioctl SIOCGIFFLAGS");
1823
errno = old_errno;
1824
}
1825
if((close(s) == -1) and debug){
1826
old_errno = errno;
1827
perror_plus("close");
1828
errno = old_errno;
1642
errno = ret_errno;
1829
1643
}
1830
1644
return false;
1831
1645
}
1832
if((close(s) == -1) and debug){
1833
old_errno = errno;
1834
perror_plus("close");
1835
errno = old_errno;
1836
}
1837
1646
return true;
1838
1647
}
1839
1648
2100
1909
return;
2101
1910
}
2102
1911
}
2103
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
2104
if(devnull == -1){
2105
perror_plus("open(\"/dev/null\", O_RDONLY)");
2106
return;
2107
}
2108
1912
int numhooks = scandirat(hookdir_fd, ".", &direntries,
2109
1913
runnable_hook, alphasort);
2110
1914
if(numhooks == -1){
2111
1915
perror_plus("scandir");
2112
close(devnull);
2113
1916
return;
2114
1917
}
2115
1918
struct dirent *direntry;
2116
1919
int ret;
1920
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
1921
if(devnull == -1){
1922
perror_plus("open(\"/dev/null\", O_RDONLY)");
1923
return;
1924
}
2117
1925
for(int i = 0; i < numhooks; i++){
2118
1926
direntry = direntries[i];
2119
1927
if(debug){
2263
2071
}
2264
2072
2265
2073
__attribute__((nonnull, warn_unused_result))
2266
int bring_up_interface(const char *const interface,
2267
const float delay){
2268
int old_errno = errno;
2074
error_t bring_up_interface(const char *const interface,
2075
const float delay){
2076
error_t old_errno = errno;
2269
2077
int ret;
2270
2078
struct ifreq network;
2271
2079
unsigned int if_index = if_nametoindex(interface);
2281
2089
}
2282
2090
2283
2091
if(not interface_is_up(interface)){
2284
int ret_errno = 0;
2285
int ioctl_errno = 0;
2092
error_t ret_errno = 0, ioctl_errno = 0;
2286
2093
if(not get_flags(interface, &network)){
2287
2094
ret_errno = errno;
2288
2095
fprintf_plus(stderr, "Failed to get flags for interface "
2375
2182
2376
2183
/* Sleep checking until interface is running.
2377
2184
Check every 0.25s, up to total time of delay */
2378
for(int i = 0; i < delay * 4; i++){
2185
for(int i=0; i < delay * 4; i++){
2379
2186
if(interface_is_running(interface)){
2380
2187
break;
2381
2188
}
2391
2198
}
2392
2199
2393
2200
__attribute__((nonnull, warn_unused_result))
2394
int take_down_interface(const char *const interface){
2395
int old_errno = errno;
2201
error_t take_down_interface(const char *const interface){
2202
error_t old_errno = errno;
2396
2203
struct ifreq network;
2397
2204
unsigned int if_index = if_nametoindex(interface);
2398
2205
if(if_index == 0){
2401
2208
return ENXIO;
2402
2209
}
2403
2210
if(interface_is_up(interface)){
2404
int ret_errno = 0;
2405
int ioctl_errno = 0;
2211
error_t ret_errno = 0, ioctl_errno = 0;
2406
2212
if(not get_flags(interface, &network) and debug){
2407
2213
ret_errno = errno;
2408
2214
fprintf_plus(stderr, "Failed to get flags for interface "
2468
2274
2469
2275
int main(int argc, char *argv[]){
2470
2276
mandos_context mc = { .server = NULL, .dh_bits = 0,
2471
#if GNUTLS_VERSION_NUMBER >= 0x030606
2472
.priority = "SECURE128:!CTYPE-X.509"
2473
":+CTYPE-RAWPK:!RSA:!VERS-ALL:+VERS-TLS1.3"
2474
":%PROFILE_ULTRA",
2475
#elif GNUTLS_VERSION_NUMBER < 0x030600
2476
2277
.priority = "SECURE256:!CTYPE-X.509"
2477
2278
":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
2478
#else
2479
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
2480
#endif
2481
2279
.current_server = NULL, .interfaces = NULL,
2482
2280
.interfaces_size = 0 };
2483
2281
AvahiSServiceBrowser *sb = NULL;
2494
2292
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
2495
2293
const char *seckey = PATHDIR "/" SECKEY;
2496
2294
const char *pubkey = PATHDIR "/" PUBKEY;
2497
#if GNUTLS_VERSION_NUMBER >= 0x030606
2498
const char *tls_privkey = PATHDIR "/" TLS_PRIVKEY;
2499
const char *tls_pubkey = PATHDIR "/" TLS_PUBKEY;
2500
#endif
2501
2295
const char *dh_params_file = NULL;
2502
2296
char *interfaces_hooks = NULL;
2503
2297
2551
2345
{ .name = "pubkey", .key = 'p',
2552
2346
.arg = "FILE",
2553
2347
.doc = "OpenPGP public key file base name",
2554
.group = 1 },
2555
{ .name = "tls-privkey", .key = 't',
2556
.arg = "FILE",
2557
#if GNUTLS_VERSION_NUMBER >= 0x030606
2558
.doc = "TLS private key file base name",
2559
#else
2560
.doc = "Dummy; ignored (requires GnuTLS 3.6.6)",
2561
#endif
2562
.group = 1 },
2563
{ .name = "tls-pubkey", .key = 'T',
2564
.arg = "FILE",
2565
#if GNUTLS_VERSION_NUMBER >= 0x030606
2566
.doc = "TLS public key file base name",
2567
#else
2568
.doc = "Dummy; ignored (requires GnuTLS 3.6.6)",
2569
#endif
2570
.group = 1 },
2348
.group = 2 },
2571
2349
{ .name = "dh-bits", .key = 129,
2572
2350
.arg = "BITS",
2573
2351
.doc = "Bit length of the prime number used in the"
2629
2407
case 'p': /* --pubkey */
2630
2408
pubkey = arg;
2631
2409
break;
2632
case 't': /* --tls-privkey */
2633
#if GNUTLS_VERSION_NUMBER >= 0x030606
2634
tls_privkey = arg;
2635
#endif
2636
break;
2637
case 'T': /* --tls-pubkey */
2638
#if GNUTLS_VERSION_NUMBER >= 0x030606
2639
tls_pubkey = arg;
2640
#endif
2641
break;
2642
2410
case 129: /* --dh-bits */
2643
2411
errno = 0;
2644
2412
tmpmax = strtoimax(arg, &tmp, 10);
2679
2447
argp_state_help(state, state->out_stream,
2680
2448
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
2681
2449
& ~(unsigned int)ARGP_HELP_EXIT_OK);
2682
__builtin_unreachable();
2683
2450
case -3: /* --usage */
2684
2451
argp_state_help(state, state->out_stream,
2685
2452
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
2686
__builtin_unreachable();
2687
2453
case 'V': /* --version */
2688
2454
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
2689
2455
exit(argp_err_exit_status);
2698
2464
.args_doc = "",
2699
2465
.doc = "Mandos client -- Get and decrypt"
2700
2466
" passwords from a Mandos server" };
2701
ret_errno = argp_parse(&argp, argc, argv,
2702
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2703
switch(ret_errno){
2467
ret = argp_parse(&argp, argc, argv,
2468
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2469
switch(ret){
2704
2470
case 0:
2705
2471
break;
2706
2472
case ENOMEM:
2707
2473
default:
2708
errno = ret_errno;
2474
errno = ret;
2709
2475
perror_plus("argp_parse");
2710
2476
exitcode = EX_OSERR;
2711
2477
goto end;
2717
2483
2718
2484
{
2719
2485
/* Work around Debian bug #633582:
2720
<https://bugs.debian.org/633582> */
2486
<http://bugs.debian.org/633582> */
2721
2487
2722
2488
/* Re-raise privileges */
2723
ret = raise_privileges();
2724
if(ret != 0){
2725
errno = ret;
2489
ret_errno = raise_privileges();
2490
if(ret_errno != 0){
2491
errno = ret_errno;
2726
2492
perror_plus("Failed to raise privileges");
2727
2493
} else {
2728
2494
struct stat st;
2792
2558
}
2793
2559
2794
2560
/* Lower privileges */
2795
ret = lower_privileges();
2796
if(ret != 0){
2797
errno = ret;
2561
ret_errno = lower_privileges();
2562
if(ret_errno != 0){
2563
errno = ret_errno;
2798
2564
perror_plus("Failed to lower privileges");
2799
2565
}
2800
2566
}
3000
2766
goto end;
3001
2767
}
3002
2768
3003
#if GNUTLS_VERSION_NUMBER >= 0x030606
3004
ret = init_gnutls_global(tls_pubkey, tls_privkey, dh_params_file, &mc);
3005
#elif GNUTLS_VERSION_NUMBER < 0x030600
3006
2769
ret = init_gnutls_global(pubkey, seckey, dh_params_file, &mc);
3007
#else
3008
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
3009
#endif
3010
2770
if(ret == -1){
3011
2771
fprintf_plus(stderr, "init_gnutls_global failed\n");
3012
2772
exitcode = EX_UNAVAILABLE;
3134
2894
3135
2895
/* Allocate a new server */
3136
2896
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
3137
&config, NULL, NULL, &ret);
2897
&config, NULL, NULL, &ret_errno);
3138
2898
3139
2899
/* Free the Avahi configuration data */
3140
2900
avahi_server_config_free(&config);
3143
2903
/* Check if creating the Avahi server object succeeded */
3144
2904
if(mc.server == NULL){
3145
2905
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
3146
avahi_strerror(ret));
2906
avahi_strerror(ret_errno));
3147
2907
exitcode = EX_UNAVAILABLE;
3148
2908
goto end;
3149
2909
}
3184
2944
end:
3185
2945
3186
2946
if(debug){
3187
if(signal_received){
3188
fprintf_plus(stderr, "%s exiting due to signal %d: %s\n",
3189
argv[0], signal_received,
3190
strsignal(signal_received));
3191
} else {
3192
fprintf_plus(stderr, "%s exiting\n", argv[0]);
3193
}
2947
fprintf_plus(stderr, "%s exiting\n", argv[0]);
3194
2948
}
3195
2949
3196
2950
/* Cleanup things */
3235
2989
3236
2990
/* Re-raise privileges */
3237
2991
{
3238
ret = raise_privileges();
3239
if(ret != 0){
3240
errno = ret;
2992
ret_errno = raise_privileges();
2993
if(ret_errno != 0){
2994
errno = ret_errno;
3241
2995
perror_plus("Failed to raise privileges");
3242
2996
} else {
3243
2997
3248
3002
/* Take down the network interfaces which were brought up */
3249
3003
{
3250
3004
char *interface = NULL;
3251
while((interface = argz_next(interfaces_to_take_down,
3252
interfaces_to_take_down_size,
3253
interface))){
3254
ret = take_down_interface(interface);
3255
if(ret != 0){
3256
errno = ret;
3005
while((interface=argz_next(interfaces_to_take_down,
3006
interfaces_to_take_down_size,
3007
interface))){
3008
ret_errno = take_down_interface(interface);
3009
if(ret_errno != 0){
3010
errno = ret_errno;
3257
3011
perror_plus("Failed to take down interface");
3258
3012
}
3259
3013
}
3264
3018
}
3265
3019
}
3266
3020
3267
ret = lower_privileges_permanently();
3268
if(ret != 0){
3269
errno = ret;
3021
ret_errno = lower_privileges_permanently();
3022
if(ret_errno != 0){
3023
errno = ret_errno;
3270
3024
perror_plus("Failed to lower privileges permanently");
3271
3025
}
3272
3026
}
3285
3039
| O_PATH));
3286
3040
if(dir_fd == -1){
3287
3041
perror_plus("open");
3288
return;
3289
3042
}
3290
3043
int numentries = scandirat(dir_fd, ".", &direntries,
3291
3044
notdotentries, alphasort);
3308
3061
clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3309
3062
dret = 0;
3310
3063
}
3311
if((dret == -1) and (errno != ENOENT)){
3064
if(dret == -1){
3312
3065
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3313
3066
direntries[i]->d_name, strerror(errno));
3314
3067
}
3318
3071
3319
3072
/* need to clean even if 0 because man page doesn't specify */
3320
3073
free(direntries);
3074
if(numentries == -1){
3075
perror_plus("scandirat");
3076
}
3321
3077
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3322
3078
if(dret == -1 and errno != ENOENT){
3323
3079
perror_plus("rmdir");
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0