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- Committer: Teddy Hogeborn
- Date: 2018-04-02 10:24:15 UTC
- Revision ID: teddy@recompile.se-20180402102415-xrsu0wxhnmlaq29a
Minor code cleanup
* plugins.d/mandos-client.c (pgp_packet_decrypt): Use a "for"
statement instead of a "while" statement to move initialization and
stepping into the for statement, and reduce loop variable name
length.
* plugins.d/mandos-client.c (pgp_packet_decrypt): Use a "for"
statement instead of a "while" statement to move initialization and
stepping into the for statement, and reduce loop variable name
length.
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008-2015 Teddy Hogeborn
13
* Copyright © 2008-2015 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
12
* Copyright © 2008-2018 Teddy Hogeborn
13
* Copyright © 2008-2018 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
21
23
* WITHOUT ANY WARRANTY; without even the implied warranty of
22
24
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23
25
* General Public License for more details.
24
26
*
25
27
* You should have received a copy of the GNU General Public License
26
* along with this program. If not, see
27
* <http://www.gnu.org/licenses/>.
28
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
28
29
*
29
30
* Contact the authors at <mandos@recompile.se>.
30
31
*/
46
47
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
47
48
strtof(), abort() */
48
49
#include <stdbool.h> /* bool, false, true */
49
#include <string.h> /* memset(), strcmp(), strlen(),
50
strerror(), asprintf(), strcpy() */
50
#include <string.h> /* strcmp(), strlen(), strerror(),
51
asprintf(), strncpy(), strsignal()
52
*/
51
53
#include <sys/ioctl.h> /* ioctl */
52
54
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
53
55
sockaddr_in6, PF_INET6,
57
59
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
60
inet_pton(), connect(),
59
61
getnameinfo() */
60
#include <fcntl.h> /* open(), unlinkat() */
62
#include <fcntl.h> /* open(), unlinkat(), AT_REMOVEDIR */
61
63
#include <dirent.h> /* opendir(), struct dirent, readdir()
62
64
*/
63
65
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
64
66
strtoimax() */
65
#include <errno.h> /* perror(), errno,
67
#include <errno.h> /* perror(), errno, EINTR, EINVAL,
68
EAI_SYSTEM, ENETUNREACH,
69
EHOSTUNREACH, ECONNREFUSED, EPROTO,
70
EIO, ENOENT, ENXIO, ENOMEM, EISDIR,
71
ENOTEMPTY,
66
72
program_invocation_short_name */
67
73
#include <time.h> /* nanosleep(), time(), sleep() */
68
74
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
304
310
gpgme_strsource(rc), gpgme_strerror(rc));
305
311
return false;
306
312
}
313
{
314
gpgme_import_result_t import_result
315
= gpgme_op_import_result(mc->ctx);
316
if((import_result->imported < 1
317
or import_result->not_imported > 0)
318
and import_result->unchanged == 0){
319
fprintf_plus(stderr, "bad gpgme_op_import_results:\n");
320
fprintf_plus(stderr,
321
"The total number of considered keys: %d\n",
322
import_result->considered);
323
fprintf_plus(stderr,
324
"The number of keys without user ID: %d\n",
325
import_result->no_user_id);
326
fprintf_plus(stderr,
327
"The total number of imported keys: %d\n",
328
import_result->imported);
329
fprintf_plus(stderr, "The number of imported RSA keys: %d\n",
330
import_result->imported_rsa);
331
fprintf_plus(stderr, "The number of unchanged keys: %d\n",
332
import_result->unchanged);
333
fprintf_plus(stderr, "The number of new user IDs: %d\n",
334
import_result->new_user_ids);
335
fprintf_plus(stderr, "The number of new sub keys: %d\n",
336
import_result->new_sub_keys);
337
fprintf_plus(stderr, "The number of new signatures: %d\n",
338
import_result->new_signatures);
339
fprintf_plus(stderr, "The number of new revocations: %d\n",
340
import_result->new_revocations);
341
fprintf_plus(stderr,
342
"The total number of secret keys read: %d\n",
343
import_result->secret_read);
344
fprintf_plus(stderr,
345
"The number of imported secret keys: %d\n",
346
import_result->secret_imported);
347
fprintf_plus(stderr,
348
"The number of unchanged secret keys: %d\n",
349
import_result->secret_unchanged);
350
fprintf_plus(stderr, "The number of keys not imported: %d\n",
351
import_result->not_imported);
352
for(gpgme_import_status_t import_status
353
= import_result->imports;
354
import_status != NULL;
355
import_status = import_status->next){
356
fprintf_plus(stderr, "Import status for key: %s\n",
357
import_status->fpr);
358
if(import_status->result != GPG_ERR_NO_ERROR){
359
fprintf_plus(stderr, "Import result: %s: %s\n",
360
gpgme_strsource(import_status->result),
361
gpgme_strerror(import_status->result));
362
}
363
fprintf_plus(stderr, "Key status:\n");
364
fprintf_plus(stderr,
365
import_status->status & GPGME_IMPORT_NEW
366
? "The key was new.\n"
367
: "The key was not new.\n");
368
fprintf_plus(stderr,
369
import_status->status & GPGME_IMPORT_UID
370
? "The key contained new user IDs.\n"
371
: "The key did not contain new user IDs.\n");
372
fprintf_plus(stderr,
373
import_status->status & GPGME_IMPORT_SIG
374
? "The key contained new signatures.\n"
375
: "The key did not contain new signatures.\n");
376
fprintf_plus(stderr,
377
import_status->status & GPGME_IMPORT_SUBKEY
378
? "The key contained new sub keys.\n"
379
: "The key did not contain new sub keys.\n");
380
fprintf_plus(stderr,
381
import_status->status & GPGME_IMPORT_SECRET
382
? "The key contained a secret key.\n"
383
: "The key did not contain a secret key.\n");
384
}
385
return false;
386
}
387
}
307
388
308
ret = (int)TEMP_FAILURE_RETRY(close(fd));
389
ret = close(fd);
309
390
if(ret == -1){
310
391
perror_plus("close");
311
392
}
350
431
/* Create new GPGME "context" */
351
432
rc = gpgme_new(&(mc->ctx));
352
433
if(rc != GPG_ERR_NO_ERROR){
353
fprintf_plus(stderr, "Mandos plugin mandos-client: "
354
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
355
gpgme_strerror(rc));
434
fprintf_plus(stderr, "bad gpgme_new: %s: %s\n",
435
gpgme_strsource(rc), gpgme_strerror(rc));
356
436
return false;
357
437
}
358
438
394
474
/* Create new empty GPGME data buffer for the plaintext */
395
475
rc = gpgme_data_new(&dh_plain);
396
476
if(rc != GPG_ERR_NO_ERROR){
397
fprintf_plus(stderr, "Mandos plugin mandos-client: "
398
"bad gpgme_data_new: %s: %s\n",
477
fprintf_plus(stderr, "bad gpgme_data_new: %s: %s\n",
399
478
gpgme_strsource(rc), gpgme_strerror(rc));
400
479
gpgme_data_release(dh_crypto);
401
480
return -1;
414
493
if(result == NULL){
415
494
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
416
495
} else {
417
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
418
result->unsupported_algorithm);
419
fprintf_plus(stderr, "Wrong key usage: %u\n",
420
result->wrong_key_usage);
496
if(result->unsupported_algorithm != NULL) {
497
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
498
result->unsupported_algorithm);
499
}
500
fprintf_plus(stderr, "Wrong key usage: %s\n",
501
result->wrong_key_usage ? "Yes" : "No");
421
502
if(result->file_name != NULL){
422
503
fprintf_plus(stderr, "File name: %s\n", result->file_name);
423
504
}
424
gpgme_recipient_t recipient;
425
recipient = result->recipients;
426
while(recipient != NULL){
505
506
for(gpgme_recipient_t r = result->recipients; r != NULL;
507
r = r->next){
427
508
fprintf_plus(stderr, "Public key algorithm: %s\n",
428
gpgme_pubkey_algo_name
429
(recipient->pubkey_algo));
430
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
509
gpgme_pubkey_algo_name(r->pubkey_algo));
510
fprintf_plus(stderr, "Key ID: %s\n", r->keyid);
431
511
fprintf_plus(stderr, "Secret key available: %s\n",
432
recipient->status == GPG_ERR_NO_SECKEY
433
? "No" : "Yes");
434
recipient = recipient->next;
512
r->status == GPG_ERR_NO_SECKEY ? "No" : "Yes");
435
513
}
436
514
}
437
515
}
513
591
fprintf_plus(stderr, "GnuTLS: %s", string);
514
592
}
515
593
516
__attribute__((nonnull, warn_unused_result))
594
__attribute__((nonnull(1, 2, 4), warn_unused_result))
517
595
static int init_gnutls_global(const char *pubkeyfilename,
518
596
const char *seckeyfilename,
519
597
const char *dhparamsfilename,
525
603
fprintf_plus(stderr, "Initializing GnuTLS\n");
526
604
}
527
605
528
ret = gnutls_global_init();
529
if(ret != GNUTLS_E_SUCCESS){
530
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
531
safer_gnutls_strerror(ret));
532
return -1;
533
}
534
535
606
if(debug){
536
607
/* "Use a log level over 10 to enable all debugging options."
537
608
* - GnuTLS manual
545
616
if(ret != GNUTLS_E_SUCCESS){
546
617
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
547
618
safer_gnutls_strerror(ret));
548
gnutls_global_deinit();
549
619
return -1;
550
620
}
551
621
615
685
}
616
686
params.size += (unsigned int)bytes_read;
617
687
}
688
ret = close(dhpfile);
689
if(ret == -1){
690
perror_plus("close");
691
}
618
692
if(params.data == NULL){
619
693
dhparamsfilename = NULL;
620
694
}
629
703
safer_gnutls_strerror(ret));
630
704
dhparamsfilename = NULL;
631
705
}
706
free(params.data);
632
707
} while(false);
633
708
}
634
709
if(dhparamsfilename == NULL){
755
830
globalfail:
756
831
757
832
gnutls_certificate_free_credentials(mc->cred);
758
gnutls_global_deinit();
759
833
gnutls_dh_params_deinit(mc->dh_params);
760
834
return -1;
761
835
}
822
896
823
897
/* Set effective uid to 0, return errno */
824
898
__attribute__((warn_unused_result))
825
error_t raise_privileges(void){
826
error_t old_errno = errno;
827
error_t ret_errno = 0;
899
int raise_privileges(void){
900
int old_errno = errno;
901
int ret = 0;
828
902
if(seteuid(0) == -1){
829
ret_errno = errno;
903
ret = errno;
830
904
}
831
905
errno = old_errno;
832
return ret_errno;
906
return ret;
833
907
}
834
908
835
909
/* Set effective and real user ID to 0. Return errno. */
836
910
__attribute__((warn_unused_result))
837
error_t raise_privileges_permanently(void){
838
error_t old_errno = errno;
839
error_t ret_errno = raise_privileges();
840
if(ret_errno != 0){
911
int raise_privileges_permanently(void){
912
int old_errno = errno;
913
int ret = raise_privileges();
914
if(ret != 0){
841
915
errno = old_errno;
842
return ret_errno;
916
return ret;
843
917
}
844
918
if(setuid(0) == -1){
845
ret_errno = errno;
919
ret = errno;
846
920
}
847
921
errno = old_errno;
848
return ret_errno;
922
return ret;
849
923
}
850
924
851
925
/* Set effective user ID to unprivileged saved user ID */
852
926
__attribute__((warn_unused_result))
853
error_t lower_privileges(void){
854
error_t old_errno = errno;
855
error_t ret_errno = 0;
927
int lower_privileges(void){
928
int old_errno = errno;
929
int ret = 0;
856
930
if(seteuid(uid) == -1){
857
ret_errno = errno;
931
ret = errno;
858
932
}
859
933
errno = old_errno;
860
return ret_errno;
934
return ret;
861
935
}
862
936
863
937
/* Lower privileges permanently */
864
938
__attribute__((warn_unused_result))
865
error_t lower_privileges_permanently(void){
866
error_t old_errno = errno;
867
error_t ret_errno = 0;
939
int lower_privileges_permanently(void){
940
int old_errno = errno;
941
int ret = 0;
868
942
if(setuid(uid) == -1){
869
ret_errno = errno;
943
ret = errno;
870
944
}
871
945
errno = old_errno;
872
return ret_errno;
946
return ret;
873
947
}
874
948
875
949
/* Helper function to add_local_route() and delete_local_route() */
931
1005
perror_plus("dup2(devnull, STDIN_FILENO)");
932
1006
_exit(EX_OSERR);
933
1007
}
934
ret = (int)TEMP_FAILURE_RETRY(close(devnull));
1008
ret = close(devnull);
935
1009
if(ret == -1){
936
1010
perror_plus("close");
937
1011
_exit(EX_OSERR);
954
1028
helper, O_RDONLY));
955
1029
if(helper_fd == -1){
956
1030
perror_plus("openat");
1031
close(helperdir_fd);
957
1032
_exit(EX_UNAVAILABLE);
958
1033
}
959
TEMP_FAILURE_RETRY(close(helperdir_fd));
1034
close(helperdir_fd);
960
1035
#ifdef __GNUC__
961
1036
#pragma GCC diagnostic push
962
1037
#pragma GCC diagnostic ignored "-Wcast-qual"
1081
1156
bool match = false;
1082
1157
{
1083
1158
char *interface = NULL;
1084
while((interface=argz_next(mc->interfaces, mc->interfaces_size,
1085
interface))){
1159
while((interface = argz_next(mc->interfaces,
1160
mc->interfaces_size,
1161
interface))){
1086
1162
if(if_nametoindex(interface) == (unsigned int)if_index){
1087
1163
match = true;
1088
1164
break;
1130
1206
goto mandos_end;
1131
1207
}
1132
1208
1133
memset(&to, 0, sizeof(to));
1134
1209
if(af == AF_INET6){
1135
((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
1136
ret = inet_pton(af, ip, &((struct sockaddr_in6 *)&to)->sin6_addr);
1210
struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&to;
1211
*to6 = (struct sockaddr_in6){ .sin6_family = (sa_family_t)af };
1212
ret = inet_pton(af, ip, &to6->sin6_addr);
1137
1213
} else { /* IPv4 */
1138
((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
1139
ret = inet_pton(af, ip, &((struct sockaddr_in *)&to)->sin_addr);
1214
struct sockaddr_in *to4 = (struct sockaddr_in *)&to;
1215
*to4 = (struct sockaddr_in){ .sin_family = (sa_family_t)af };
1216
ret = inet_pton(af, ip, &to4->sin_addr);
1140
1217
}
1141
1218
if(ret < 0 ){
1142
1219
int e = errno;
1221
1298
sizeof(struct sockaddr_in));
1222
1299
}
1223
1300
if(ret < 0){
1224
if(errno == ENETUNREACH
1301
if(((errno == ENETUNREACH) or (errno == EHOSTUNREACH))
1225
1302
and if_index != AVAHI_IF_UNSPEC
1226
1303
and connect_to == NULL
1227
1304
and not route_added and
1240
1317
with an explicit route added with the server's address.
1241
1318
1242
1319
Avahi bug reference:
1243
http://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1320
https://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1244
1321
https://bugs.debian.org/587961
1245
1322
*/
1246
1323
if(debug){
1426
1503
&decrypted_buffer, mc);
1427
1504
if(decrypted_buffer_size >= 0){
1428
1505
1506
clearerr(stdout);
1429
1507
written = 0;
1430
1508
while(written < (size_t) decrypted_buffer_size){
1431
1509
if(quit_now){
1447
1525
}
1448
1526
written += (size_t)ret;
1449
1527
}
1528
ret = fflush(stdout);
1529
if(ret != 0){
1530
int e = errno;
1531
if(debug){
1532
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
1533
strerror(errno));
1534
}
1535
errno = e;
1536
goto mandos_end;
1537
}
1450
1538
retval = 0;
1451
1539
}
1452
1540
}
1465
1553
free(decrypted_buffer);
1466
1554
free(buffer);
1467
1555
if(tcp_sd >= 0){
1468
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
1556
ret = close(tcp_sd);
1469
1557
}
1470
1558
if(ret == -1){
1471
1559
if(e == 0){
1483
1571
return retval;
1484
1572
}
1485
1573
1486
__attribute__((nonnull))
1487
1574
static void resolve_callback(AvahiSServiceResolver *r,
1488
1575
AvahiIfIndex interface,
1489
1576
AvahiProtocol proto,
1626
1713
__attribute__((nonnull, warn_unused_result))
1627
1714
bool get_flags(const char *ifname, struct ifreq *ifr){
1628
1715
int ret;
1629
error_t ret_errno;
1716
int old_errno;
1630
1717
1631
1718
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1632
1719
if(s < 0){
1633
ret_errno = errno;
1720
old_errno = errno;
1634
1721
perror_plus("socket");
1635
errno = ret_errno;
1722
errno = old_errno;
1636
1723
return false;
1637
1724
}
1638
strcpy(ifr->ifr_name, ifname);
1725
strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
1726
ifr->ifr_name[IF_NAMESIZE-1] = '\0'; /* NUL terminate */
1639
1727
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1640
1728
if(ret == -1){
1641
1729
if(debug){
1642
ret_errno = errno;
1730
old_errno = errno;
1643
1731
perror_plus("ioctl SIOCGIFFLAGS");
1644
errno = ret_errno;
1732
errno = old_errno;
1733
}
1734
if((close(s) == -1) and debug){
1735
old_errno = errno;
1736
perror_plus("close");
1737
errno = old_errno;
1645
1738
}
1646
1739
return false;
1647
1740
}
1741
if((close(s) == -1) and debug){
1742
old_errno = errno;
1743
perror_plus("close");
1744
errno = old_errno;
1745
}
1648
1746
return true;
1649
1747
}
1650
1748
1911
2009
return;
1912
2010
}
1913
2011
}
1914
#ifdef __GLIBC__
1915
#if __GLIBC_PREREQ(2, 15)
2012
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
2013
if(devnull == -1){
2014
perror_plus("open(\"/dev/null\", O_RDONLY)");
2015
return;
2016
}
1916
2017
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1917
2018
runnable_hook, alphasort);
1918
#else /* not __GLIBC_PREREQ(2, 15) */
1919
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1920
alphasort);
1921
#endif /* not __GLIBC_PREREQ(2, 15) */
1922
#else /* not __GLIBC__ */
1923
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1924
alphasort);
1925
#endif /* not __GLIBC__ */
1926
2019
if(numhooks == -1){
1927
2020
perror_plus("scandir");
2021
close(devnull);
1928
2022
return;
1929
2023
}
1930
2024
struct dirent *direntry;
1931
2025
int ret;
1932
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
1933
if(devnull == -1){
1934
perror_plus("open(\"/dev/null\", O_RDONLY)");
1935
return;
1936
}
1937
2026
for(int i = 0; i < numhooks; i++){
1938
2027
direntry = direntries[i];
1939
2028
if(debug){
2010
2099
perror_plus("openat");
2011
2100
_exit(EXIT_FAILURE);
2012
2101
}
2013
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
2102
if(close(hookdir_fd) == -1){
2014
2103
perror_plus("close");
2015
2104
_exit(EXIT_FAILURE);
2016
2105
}
2019
2108
perror_plus("dup2(devnull, STDIN_FILENO)");
2020
2109
_exit(EX_OSERR);
2021
2110
}
2022
ret = (int)TEMP_FAILURE_RETRY(close(devnull));
2111
ret = close(devnull);
2023
2112
if(ret == -1){
2024
2113
perror_plus("close");
2025
2114
_exit(EX_OSERR);
2074
2163
free(direntry);
2075
2164
}
2076
2165
free(direntries);
2077
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
2166
if(close(hookdir_fd) == -1){
2078
2167
perror_plus("close");
2079
2168
} else {
2080
2169
hookdir_fd = -1;
2083
2172
}
2084
2173
2085
2174
__attribute__((nonnull, warn_unused_result))
2086
error_t bring_up_interface(const char *const interface,
2087
const float delay){
2088
error_t old_errno = errno;
2175
int bring_up_interface(const char *const interface,
2176
const float delay){
2177
int old_errno = errno;
2089
2178
int ret;
2090
2179
struct ifreq network;
2091
2180
unsigned int if_index = if_nametoindex(interface);
2101
2190
}
2102
2191
2103
2192
if(not interface_is_up(interface)){
2104
error_t ret_errno = 0, ioctl_errno = 0;
2193
int ret_errno = 0;
2194
int ioctl_errno = 0;
2105
2195
if(not get_flags(interface, &network)){
2106
2196
ret_errno = errno;
2107
2197
fprintf_plus(stderr, "Failed to get flags for interface "
2120
2210
}
2121
2211
2122
2212
if(quit_now){
2123
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2213
ret = close(sd);
2124
2214
if(ret == -1){
2125
2215
perror_plus("close");
2126
2216
}
2176
2266
}
2177
2267
2178
2268
/* Close the socket */
2179
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2269
ret = close(sd);
2180
2270
if(ret == -1){
2181
2271
perror_plus("close");
2182
2272
}
2194
2284
2195
2285
/* Sleep checking until interface is running.
2196
2286
Check every 0.25s, up to total time of delay */
2197
for(int i=0; i < delay * 4; i++){
2287
for(int i = 0; i < delay * 4; i++){
2198
2288
if(interface_is_running(interface)){
2199
2289
break;
2200
2290
}
2210
2300
}
2211
2301
2212
2302
__attribute__((nonnull, warn_unused_result))
2213
error_t take_down_interface(const char *const interface){
2214
error_t old_errno = errno;
2303
int take_down_interface(const char *const interface){
2304
int old_errno = errno;
2215
2305
struct ifreq network;
2216
2306
unsigned int if_index = if_nametoindex(interface);
2217
2307
if(if_index == 0){
2220
2310
return ENXIO;
2221
2311
}
2222
2312
if(interface_is_up(interface)){
2223
error_t ret_errno = 0, ioctl_errno = 0;
2313
int ret_errno = 0;
2314
int ioctl_errno = 0;
2224
2315
if(not get_flags(interface, &network) and debug){
2225
2316
ret_errno = errno;
2226
2317
fprintf_plus(stderr, "Failed to get flags for interface "
2264
2355
}
2265
2356
2266
2357
/* Close the socket */
2267
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
2358
int ret = close(sd);
2268
2359
if(ret == -1){
2269
2360
perror_plus("close");
2270
2361
}
2286
2377
2287
2378
int main(int argc, char *argv[]){
2288
2379
mandos_context mc = { .server = NULL, .dh_bits = 0,
2289
.priority = "SECURE256:!CTYPE-X.509:"
2290
"+CTYPE-OPENPGP:!RSA", .current_server = NULL,
2291
.interfaces = NULL, .interfaces_size = 0 };
2380
.priority = "SECURE256:!CTYPE-X.509"
2381
":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
2382
.current_server = NULL, .interfaces = NULL,
2383
.interfaces_size = 0 };
2292
2384
AvahiSServiceBrowser *sb = NULL;
2293
2385
error_t ret_errno;
2294
2386
int ret;
2475
2567
.args_doc = "",
2476
2568
.doc = "Mandos client -- Get and decrypt"
2477
2569
" passwords from a Mandos server" };
2478
ret = argp_parse(&argp, argc, argv,
2479
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2480
switch(ret){
2570
ret_errno = argp_parse(&argp, argc, argv,
2571
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2572
switch(ret_errno){
2481
2573
case 0:
2482
2574
break;
2483
2575
case ENOMEM:
2484
2576
default:
2485
errno = ret;
2577
errno = ret_errno;
2486
2578
perror_plus("argp_parse");
2487
2579
exitcode = EX_OSERR;
2488
2580
goto end;
2494
2586
2495
2587
{
2496
2588
/* Work around Debian bug #633582:
2497
<http://bugs.debian.org/633582> */
2589
<https://bugs.debian.org/633582> */
2498
2590
2499
2591
/* Re-raise privileges */
2500
ret_errno = raise_privileges();
2501
if(ret_errno != 0){
2502
errno = ret_errno;
2592
ret = raise_privileges();
2593
if(ret != 0){
2594
errno = ret;
2503
2595
perror_plus("Failed to raise privileges");
2504
2596
} else {
2505
2597
struct stat st;
2521
2613
}
2522
2614
}
2523
2615
}
2524
TEMP_FAILURE_RETRY(close(seckey_fd));
2616
close(seckey_fd);
2525
2617
}
2526
2618
}
2527
2619
2542
2634
}
2543
2635
}
2544
2636
}
2545
TEMP_FAILURE_RETRY(close(pubkey_fd));
2637
close(pubkey_fd);
2546
2638
}
2547
2639
}
2548
2640
2549
if(strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
2641
if(dh_params_file != NULL
2642
and strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
2550
2643
int dhparams_fd = open(dh_params_file, O_RDONLY);
2551
2644
if(dhparams_fd == -1){
2552
2645
perror_plus("open");
2563
2656
}
2564
2657
}
2565
2658
}
2566
TEMP_FAILURE_RETRY(close(dhparams_fd));
2659
close(dhparams_fd);
2567
2660
}
2568
2661
}
2569
2662
2570
2663
/* Lower privileges */
2571
ret_errno = lower_privileges();
2572
if(ret_errno != 0){
2573
errno = ret_errno;
2664
ret = lower_privileges();
2665
if(ret != 0){
2666
errno = ret;
2574
2667
perror_plus("Failed to lower privileges");
2575
2668
}
2576
2669
}
2746
2839
errno = bring_up_interface(interface, delay);
2747
2840
if(not interface_was_up){
2748
2841
if(errno != 0){
2749
perror_plus("Failed to bring up interface");
2842
fprintf_plus(stderr, "Failed to bring up interface \"%s\":"
2843
" %s\n", interface, strerror(errno));
2750
2844
} else {
2751
2845
errno = argz_add(&interfaces_to_take_down,
2752
2846
&interfaces_to_take_down_size,
2903
2997
2904
2998
/* Allocate a new server */
2905
2999
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
2906
&config, NULL, NULL, &ret_errno);
3000
&config, NULL, NULL, &ret);
2907
3001
2908
3002
/* Free the Avahi configuration data */
2909
3003
avahi_server_config_free(&config);
2912
3006
/* Check if creating the Avahi server object succeeded */
2913
3007
if(mc.server == NULL){
2914
3008
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2915
avahi_strerror(ret_errno));
3009
avahi_strerror(ret));
2916
3010
exitcode = EX_UNAVAILABLE;
2917
3011
goto end;
2918
3012
}
2953
3047
end:
2954
3048
2955
3049
if(debug){
2956
fprintf_plus(stderr, "%s exiting\n", argv[0]);
3050
if(signal_received){
3051
fprintf_plus(stderr, "%s exiting due to signal %d: %s\n",
3052
argv[0], signal_received,
3053
strsignal(signal_received));
3054
} else {
3055
fprintf_plus(stderr, "%s exiting\n", argv[0]);
3056
}
2957
3057
}
2958
3058
2959
3059
/* Cleanup things */
2970
3070
2971
3071
if(gnutls_initialized){
2972
3072
gnutls_certificate_free_credentials(mc.cred);
2973
gnutls_global_deinit();
2974
3073
gnutls_dh_params_deinit(mc.dh_params);
2975
3074
}
2976
3075
2999
3098
3000
3099
/* Re-raise privileges */
3001
3100
{
3002
ret_errno = raise_privileges();
3003
if(ret_errno != 0){
3004
errno = ret_errno;
3101
ret = raise_privileges();
3102
if(ret != 0){
3103
errno = ret;
3005
3104
perror_plus("Failed to raise privileges");
3006
3105
} else {
3007
3106
3012
3111
/* Take down the network interfaces which were brought up */
3013
3112
{
3014
3113
char *interface = NULL;
3015
while((interface=argz_next(interfaces_to_take_down,
3016
interfaces_to_take_down_size,
3017
interface))){
3018
ret_errno = take_down_interface(interface);
3019
if(ret_errno != 0){
3020
errno = ret_errno;
3114
while((interface = argz_next(interfaces_to_take_down,
3115
interfaces_to_take_down_size,
3116
interface))){
3117
ret = take_down_interface(interface);
3118
if(ret != 0){
3119
errno = ret;
3021
3120
perror_plus("Failed to take down interface");
3022
3121
}
3023
3122
}
3028
3127
}
3029
3128
}
3030
3129
3031
ret_errno = lower_privileges_permanently();
3032
if(ret_errno != 0){
3033
errno = ret_errno;
3130
ret = lower_privileges_permanently();
3131
if(ret != 0){
3132
errno = ret;
3034
3133
perror_plus("Failed to lower privileges permanently");
3035
3134
}
3036
3135
}
3038
3137
free(interfaces_to_take_down);
3039
3138
free(interfaces_hooks);
3040
3139
3140
void clean_dir_at(int base, const char * const dirname,
3141
uintmax_t level){
3142
struct dirent **direntries = NULL;
3143
int dret;
3144
int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3145
O_RDONLY
3146
| O_NOFOLLOW
3147
| O_DIRECTORY
3148
| O_PATH));
3149
if(dir_fd == -1){
3150
perror_plus("open");
3151
return;
3152
}
3153
int numentries = scandirat(dir_fd, ".", &direntries,
3154
notdotentries, alphasort);
3155
if(numentries >= 0){
3156
for(int i = 0; i < numentries; i++){
3157
if(debug){
3158
fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3159
dirname, direntries[i]->d_name);
3160
}
3161
dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3162
if(dret == -1){
3163
if(errno == EISDIR){
3164
dret = unlinkat(dir_fd, direntries[i]->d_name,
3165
AT_REMOVEDIR);
3166
}
3167
if((dret == -1) and (errno == ENOTEMPTY)
3168
and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3169
== 0) and (level == 0)){
3170
/* Recurse only in this special case */
3171
clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3172
dret = 0;
3173
}
3174
if((dret == -1) and (errno != ENOENT)){
3175
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3176
direntries[i]->d_name, strerror(errno));
3177
}
3178
}
3179
free(direntries[i]);
3180
}
3181
3182
/* need to clean even if 0 because man page doesn't specify */
3183
free(direntries);
3184
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3185
if(dret == -1 and errno != ENOENT){
3186
perror_plus("rmdir");
3187
}
3188
} else {
3189
perror_plus("scandirat");
3190
}
3191
close(dir_fd);
3192
}
3193
3041
3194
/* Removes the GPGME temp directory and all files inside */
3042
3195
if(tempdir != NULL){
3043
struct dirent **direntries = NULL;
3044
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY
3045
| O_NOFOLLOW
3046
| O_DIRECTORY
3047
| O_PATH));
3048
if(tempdir_fd == -1){
3049
perror_plus("open");
3050
} else {
3051
#ifdef __GLIBC__
3052
#if __GLIBC_PREREQ(2, 15)
3053
int numentries = scandirat(tempdir_fd, ".", &direntries,
3054
notdotentries, alphasort);
3055
#else /* not __GLIBC_PREREQ(2, 15) */
3056
int numentries = scandir(tempdir, &direntries, notdotentries,
3057
alphasort);
3058
#endif /* not __GLIBC_PREREQ(2, 15) */
3059
#else /* not __GLIBC__ */
3060
int numentries = scandir(tempdir, &direntries, notdotentries,
3061
alphasort);
3062
#endif /* not __GLIBC__ */
3063
if(numentries >= 0){
3064
for(int i = 0; i < numentries; i++){
3065
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
3066
if(ret == -1){
3067
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
3068
" \"%s\", 0): %s\n", tempdir,
3069
direntries[i]->d_name, strerror(errno));
3070
}
3071
free(direntries[i]);
3072
}
3073
3074
/* need to clean even if 0 because man page doesn't specify */
3075
free(direntries);
3076
if(numentries == -1){
3077
perror_plus("scandir");
3078
}
3079
ret = rmdir(tempdir);
3080
if(ret == -1 and errno != ENOENT){
3081
perror_plus("rmdir");
3082
}
3083
}
3084
TEMP_FAILURE_RETRY(close(tempdir_fd));
3085
}
3196
clean_dir_at(-1, tempdir, 0);
3086
3197
}
3087
3198
3088
3199
if(quit_now){
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0