9
9
* "browse_callback", and parts of "main".
11
11
* Everything else is
12
* Copyright © 2008-2020 Teddy Hogeborn
13
* Copyright © 2008-2020 Björn Påhlsson
15
* This file is part of Mandos.
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.
22
* Mandos is distributed in the hope that it will be useful, but
12
* Copyright © 2008-2012 Teddy Hogeborn
13
* Copyright © 2008-2012 Björn Påhlsson
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.
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.
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/>.
30
29
* Contact the authors at <mandos@recompile.se>.
33
32
/* Needed by GPGME, specifically gpgme_data_seek() */
34
33
#ifndef _LARGEFILE_SOURCE
35
34
#define _LARGEFILE_SOURCE
36
#endif /* not _LARGEFILE_SOURCE */
37
36
#ifndef _FILE_OFFSET_BITS
38
37
#define _FILE_OFFSET_BITS 64
39
#endif /* not _FILE_OFFSET_BITS */
41
40
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
43
42
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror(), remove() */
45
44
#include <stdint.h> /* uint16_t, uint32_t, intptr_t */
46
45
#include <stddef.h> /* NULL, size_t, ssize_t */
47
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
48
47
strtof(), abort() */
49
48
#include <stdbool.h> /* bool, false, true */
50
#include <string.h> /* strcmp(), strlen(), strerror(),
51
asprintf(), strncpy(), strsignal()
49
#include <string.h> /* memset(), strcmp(), strlen(),
50
strerror(), asprintf(), strcpy() */
53
51
#include <sys/ioctl.h> /* ioctl */
54
52
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
55
53
sockaddr_in6, PF_INET6,
58
56
#include <sys/stat.h> /* open(), S_ISREG */
59
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
60
inet_pton(), connect(),
62
#include <fcntl.h> /* open(), unlinkat(), AT_REMOVEDIR */
58
inet_pton(), connect() */
59
#include <fcntl.h> /* open() */
63
60
#include <dirent.h> /* opendir(), struct dirent, readdir()
65
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
67
#include <errno.h> /* perror(), errno, EINTR, EINVAL,
68
EAI_SYSTEM, ENETUNREACH,
69
EHOSTUNREACH, ECONNREFUSED, EPROTO,
70
EIO, ENOENT, ENXIO, ENOMEM, EISDIR,
64
#include <errno.h> /* perror(), errno,
72
65
program_invocation_short_name */
73
66
#include <time.h> /* nanosleep(), time(), sleep() */
74
67
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
249
225
if(new_server->ip == NULL){
250
226
perror_plus("strdup");
254
ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));
256
perror_plus("clock_gettime");
258
#pragma GCC diagnostic push
259
#pragma GCC diagnostic ignored "-Wcast-qual"
261
free((char *)(new_server->ip));
263
#pragma GCC diagnostic pop
268
229
/* Special case of first server */
269
if(*current_server == NULL){
230
if (mc.current_server == NULL){
270
231
new_server->next = new_server;
271
232
new_server->prev = new_server;
272
*current_server = new_server;
233
mc.current_server = new_server;
234
/* Place the new server last in the list */
274
/* Place the new server last in the list */
275
new_server->next = *current_server;
276
new_server->prev = (*current_server)->prev;
236
new_server->next = mc.current_server;
237
new_server->prev = mc.current_server->prev;
277
238
new_server->prev->next = new_server;
278
(*current_server)->prev = new_server;
239
mc.current_server->prev = new_server;
241
ret = clock_gettime(CLOCK_MONOTONIC, &mc.current_server->last_seen);
243
perror_plus("clock_gettime");
283
/* Set effective uid to 0, return errno */
284
__attribute__((warn_unused_result))
285
int raise_privileges(void){
286
int old_errno = errno;
288
if(seteuid(0) == -1){
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();
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;
316
if(seteuid(uid) == -1){
323
/* Lower privileges permanently */
324
__attribute__((warn_unused_result))
325
int lower_privileges_permanently(void){
326
int old_errno = errno;
328
if(setuid(uid) == -1){
336
250
* Initialize GPGME.
338
__attribute__((nonnull, warn_unused_result))
339
static bool init_gpgme(const char * const seckey,
340
const char * const pubkey,
341
const char * const tempdir,
252
static bool init_gpgme(const char *seckey, const char *pubkey,
253
const char *tempdir){
343
254
gpgme_error_t rc;
344
255
gpgme_engine_info_t engine_info;
347
259
* Helper function to insert pub and seckey to the engine keyring.
349
bool import_key(const char * const filename){
261
bool import_key(const char *filename){
352
264
gpgme_data_t pgp_data;
416
rc = gpgme_op_import(mc->ctx, pgp_data);
279
rc = gpgme_op_import(mc.ctx, pgp_data);
417
280
if(rc != GPG_ERR_NO_ERROR){
418
281
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
419
282
gpgme_strsource(rc), gpgme_strerror(rc));
423
gpgme_import_result_t import_result
424
= gpgme_op_import_result(mc->ctx);
425
if((import_result->imported < 1
426
or import_result->not_imported > 0)
427
and import_result->unchanged == 0){
428
fprintf_plus(stderr, "bad gpgme_op_import_results:\n");
430
"The total number of considered keys: %d\n",
431
import_result->considered);
433
"The number of keys without user ID: %d\n",
434
import_result->no_user_id);
436
"The total number of imported keys: %d\n",
437
import_result->imported);
438
fprintf_plus(stderr, "The number of imported RSA keys: %d\n",
439
import_result->imported_rsa);
440
fprintf_plus(stderr, "The number of unchanged keys: %d\n",
441
import_result->unchanged);
442
fprintf_plus(stderr, "The number of new user IDs: %d\n",
443
import_result->new_user_ids);
444
fprintf_plus(stderr, "The number of new sub keys: %d\n",
445
import_result->new_sub_keys);
446
fprintf_plus(stderr, "The number of new signatures: %d\n",
447
import_result->new_signatures);
448
fprintf_plus(stderr, "The number of new revocations: %d\n",
449
import_result->new_revocations);
451
"The total number of secret keys read: %d\n",
452
import_result->secret_read);
454
"The number of imported secret keys: %d\n",
455
import_result->secret_imported);
457
"The number of unchanged secret keys: %d\n",
458
import_result->secret_unchanged);
459
fprintf_plus(stderr, "The number of keys not imported: %d\n",
460
import_result->not_imported);
461
for(gpgme_import_status_t import_status
462
= import_result->imports;
463
import_status != NULL;
464
import_status = import_status->next){
465
fprintf_plus(stderr, "Import status for key: %s\n",
467
if(import_status->result != GPG_ERR_NO_ERROR){
468
fprintf_plus(stderr, "Import result: %s: %s\n",
469
gpgme_strsource(import_status->result),
470
gpgme_strerror(import_status->result));
472
fprintf_plus(stderr, "Key status:\n");
474
import_status->status & GPGME_IMPORT_NEW
475
? "The key was new.\n"
476
: "The key was not new.\n");
478
import_status->status & GPGME_IMPORT_UID
479
? "The key contained new user IDs.\n"
480
: "The key did not contain new user IDs.\n");
482
import_status->status & GPGME_IMPORT_SIG
483
? "The key contained new signatures.\n"
484
: "The key did not contain new signatures.\n");
486
import_status->status & GPGME_IMPORT_SUBKEY
487
? "The key contained new sub keys.\n"
488
: "The key did not contain new sub keys.\n");
490
import_status->status & GPGME_IMPORT_SECRET
491
? "The key contained a secret key.\n"
492
: "The key did not contain a secret key.\n");
286
ret = (int)TEMP_FAILURE_RETRY(close(fd));
500
288
perror_plus("close");
592
380
/* Decrypt data from the cryptotext data buffer to the plaintext
594
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
382
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
595
383
if(rc != GPG_ERR_NO_ERROR){
596
384
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
597
385
gpgme_strsource(rc), gpgme_strerror(rc));
598
386
plaintext_length = -1;
600
388
gpgme_decrypt_result_t result;
601
result = gpgme_op_decrypt_result(mc->ctx);
389
result = gpgme_op_decrypt_result(mc.ctx);
602
390
if(result == NULL){
603
391
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
605
if(result->unsupported_algorithm != NULL) {
606
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
607
result->unsupported_algorithm);
609
fprintf_plus(stderr, "Wrong key usage: %s\n",
610
result->wrong_key_usage ? "Yes" : "No");
393
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
394
result->unsupported_algorithm);
395
fprintf_plus(stderr, "Wrong key usage: %u\n",
396
result->wrong_key_usage);
611
397
if(result->file_name != NULL){
612
398
fprintf_plus(stderr, "File name: %s\n", result->file_name);
615
for(gpgme_recipient_t r = result->recipients; r != NULL;
400
gpgme_recipient_t recipient;
401
recipient = result->recipients;
402
while(recipient != NULL){
617
403
fprintf_plus(stderr, "Public key algorithm: %s\n",
618
gpgme_pubkey_algo_name(r->pubkey_algo));
619
fprintf_plus(stderr, "Key ID: %s\n", r->keyid);
404
gpgme_pubkey_algo_name
405
(recipient->pubkey_algo));
406
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
620
407
fprintf_plus(stderr, "Secret key available: %s\n",
621
r->status == GPG_ERR_NO_SECKEY ? "No" : "Yes");
408
recipient->status == GPG_ERR_NO_SECKEY
410
recipient = recipient->next;
680
469
return plaintext_length;
683
__attribute__((warn_unused_result, const))
684
static const char *safe_string(const char *str){
690
__attribute__((warn_unused_result))
691
static const char *safer_gnutls_strerror(int value){
472
static const char * safer_gnutls_strerror(int value){
692
473
const char *ret = gnutls_strerror(value);
693
return safe_string(ret);
696
479
/* GnuTLS log function callback */
697
__attribute__((nonnull))
698
480
static void debuggnutls(__attribute__((unused)) int level,
699
481
const char* string){
700
482
fprintf_plus(stderr, "GnuTLS: %s", string);
703
__attribute__((nonnull(1, 2, 4), warn_unused_result))
704
485
static int init_gnutls_global(const char *pubkeyfilename,
705
const char *seckeyfilename,
706
const char *dhparamsfilename,
486
const char *seckeyfilename){
711
490
fprintf_plus(stderr, "Initializing GnuTLS\n");
493
ret = gnutls_global_init();
494
if(ret != GNUTLS_E_SUCCESS){
495
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
496
safer_gnutls_strerror(ret));
715
501
/* "Use a log level over 10 to enable all debugging options."
716
502
* - GnuTLS manual
722
508
/* OpenPGP credentials */
723
ret = gnutls_certificate_allocate_credentials(&mc->cred);
509
ret = gnutls_certificate_allocate_credentials(&mc.cred);
724
510
if(ret != GNUTLS_E_SUCCESS){
725
511
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
726
512
safer_gnutls_strerror(ret));
513
gnutls_global_deinit();
731
fprintf_plus(stderr, "Attempting to use public key %s and"
732
" private key %s as GnuTLS credentials\n",
518
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
519
" secret key %s as GnuTLS credentials\n",
737
#if GNUTLS_VERSION_NUMBER >= 0x030606
738
ret = gnutls_certificate_set_rawpk_key_file
739
(mc->cred, pubkeyfilename, seckeyfilename,
740
GNUTLS_X509_FMT_PEM, /* format */
743
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
745
0, /* names_length */
747
GNUTLS_PKCS_PLAIN | GNUTLS_PKCS_NULL_PASSWORD,
748
0); /* pkcs11_flags */
749
#elif GNUTLS_VERSION_NUMBER < 0x030600
750
524
ret = gnutls_certificate_set_openpgp_key_file
751
(mc->cred, pubkeyfilename, seckeyfilename,
525
(mc.cred, pubkeyfilename, seckeyfilename,
752
526
GNUTLS_OPENPGP_FMT_BASE64);
754
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
756
527
if(ret != GNUTLS_E_SUCCESS){
757
528
fprintf_plus(stderr,
758
"Error[%d] while reading the key pair ('%s',"
529
"Error[%d] while reading the OpenPGP key pair ('%s',"
759
530
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
760
531
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
761
532
safer_gnutls_strerror(ret));
765
536
/* GnuTLS server initialization */
766
ret = gnutls_dh_params_init(&mc->dh_params);
537
ret = gnutls_dh_params_init(&mc.dh_params);
767
538
if(ret != GNUTLS_E_SUCCESS){
768
539
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
769
540
" initialization: %s\n",
770
541
safer_gnutls_strerror(ret));
773
/* If a Diffie-Hellman parameters file was given, try to use it */
774
if(dhparamsfilename != NULL){
775
gnutls_datum_t params = { .data = NULL, .size = 0 };
777
int dhpfile = open(dhparamsfilename, O_RDONLY);
780
dhparamsfilename = NULL;
783
size_t params_capacity = 0;
785
params_capacity = incbuffer((char **)¶ms.data,
787
(size_t)params_capacity);
788
if(params_capacity == 0){
789
perror_plus("incbuffer");
792
dhparamsfilename = NULL;
795
ssize_t bytes_read = read(dhpfile,
796
params.data + params.size,
802
/* check bytes_read for failure */
807
dhparamsfilename = NULL;
810
params.size += (unsigned int)bytes_read;
812
ret = close(dhpfile);
814
perror_plus("close");
816
if(params.data == NULL){
817
dhparamsfilename = NULL;
819
if(dhparamsfilename == NULL){
822
ret = gnutls_dh_params_import_pkcs3(mc->dh_params, ¶ms,
823
GNUTLS_X509_FMT_PEM);
824
if(ret != GNUTLS_E_SUCCESS){
825
fprintf_plus(stderr, "Failed to parse DH parameters in file"
826
" \"%s\": %s\n", dhparamsfilename,
827
safer_gnutls_strerror(ret));
828
dhparamsfilename = NULL;
833
if(dhparamsfilename == NULL){
834
if(mc->dh_bits == 0){
835
#if GNUTLS_VERSION_NUMBER < 0x030600
836
/* Find out the optimal number of DH bits */
837
/* Try to read the private key file */
838
gnutls_datum_t buffer = { .data = NULL, .size = 0 };
840
int secfile = open(seckeyfilename, O_RDONLY);
845
size_t buffer_capacity = 0;
847
buffer_capacity = incbuffer((char **)&buffer.data,
849
(size_t)buffer_capacity);
850
if(buffer_capacity == 0){
851
perror_plus("incbuffer");
856
ssize_t bytes_read = read(secfile,
857
buffer.data + buffer.size,
863
/* check bytes_read for failure */
870
buffer.size += (unsigned int)bytes_read;
874
/* If successful, use buffer to parse private key */
875
gnutls_sec_param_t sec_param = GNUTLS_SEC_PARAM_ULTRA;
876
if(buffer.data != NULL){
878
gnutls_openpgp_privkey_t privkey = NULL;
879
ret = gnutls_openpgp_privkey_init(&privkey);
880
if(ret != GNUTLS_E_SUCCESS){
881
fprintf_plus(stderr, "Error initializing OpenPGP key"
883
safer_gnutls_strerror(ret));
887
ret = gnutls_openpgp_privkey_import
888
(privkey, &buffer, GNUTLS_OPENPGP_FMT_BASE64, "", 0);
889
if(ret != GNUTLS_E_SUCCESS){
890
fprintf_plus(stderr, "Error importing OpenPGP key : %s",
891
safer_gnutls_strerror(ret));
897
/* Use private key to suggest an appropriate
899
sec_param = gnutls_openpgp_privkey_sec_param(privkey);
900
gnutls_openpgp_privkey_deinit(privkey);
902
fprintf_plus(stderr, "This OpenPGP key implies using"
903
" a GnuTLS security parameter \"%s\".\n",
904
safe_string(gnutls_sec_param_get_name
910
if(sec_param == GNUTLS_SEC_PARAM_UNKNOWN){
911
/* Err on the side of caution */
912
sec_param = GNUTLS_SEC_PARAM_ULTRA;
914
fprintf_plus(stderr, "Falling back to security parameter"
916
safe_string(gnutls_sec_param_get_name
921
unsigned int uret = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, sec_param);
925
fprintf_plus(stderr, "A \"%s\" GnuTLS security parameter"
926
" implies %u DH bits; using that.\n",
927
safe_string(gnutls_sec_param_get_name
932
fprintf_plus(stderr, "Failed to get implied number of DH"
933
" bits for security parameter \"%s\"): %s\n",
934
safe_string(gnutls_sec_param_get_name
936
safer_gnutls_strerror(ret));
940
} else { /* dh_bits != 0 */
942
fprintf_plus(stderr, "DH bits explicitly set to %u\n",
945
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
946
if(ret != GNUTLS_E_SUCCESS){
947
fprintf_plus(stderr, "Error in GnuTLS prime generation (%u"
948
" bits): %s\n", mc->dh_bits,
949
safer_gnutls_strerror(ret));
952
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
544
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
545
if(ret != GNUTLS_E_SUCCESS){
546
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
547
safer_gnutls_strerror(ret));
551
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
960
gnutls_certificate_free_credentials(mc->cred);
961
gnutls_dh_params_deinit(mc->dh_params);
557
gnutls_certificate_free_credentials(mc.cred);
558
gnutls_global_deinit();
559
gnutls_dh_params_deinit(mc.dh_params);
965
__attribute__((nonnull, warn_unused_result))
966
static int init_gnutls_session(gnutls_session_t *session,
563
static int init_gnutls_session(gnutls_session_t *session){
969
565
/* GnuTLS session creation */
971
ret = gnutls_init(session, (GNUTLS_SERVER
972
#if GNUTLS_VERSION_NUMBER >= 0x030506
975
#if GNUTLS_VERSION_NUMBER >= 0x030606
976
| GNUTLS_ENABLE_RAWPK
567
ret = gnutls_init(session, GNUTLS_SERVER);
1029
620
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
1030
621
__attribute__((unused)) const char *txt){}
1032
/* Helper function to add_local_route() and delete_local_route() */
1033
__attribute__((nonnull, warn_unused_result))
1034
static bool add_delete_local_route(const bool add,
1035
const char *address,
1036
AvahiIfIndex if_index){
1038
char helper[] = "mandos-client-iprouteadddel";
1039
char add_arg[] = "add";
1040
char delete_arg[] = "delete";
1041
char debug_flag[] = "--debug";
1042
char *pluginhelperdir = getenv("MANDOSPLUGINHELPERDIR");
1043
if(pluginhelperdir == NULL){
1045
fprintf_plus(stderr, "MANDOSPLUGINHELPERDIR environment"
1046
" variable not set; cannot run helper\n");
1051
char interface[IF_NAMESIZE];
1052
if(if_indextoname((unsigned int)if_index, interface) == NULL){
1053
perror_plus("if_indextoname");
1057
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
1059
perror_plus("open(\"/dev/null\", O_RDONLY)");
1065
/* Raise privileges */
1066
errno = raise_privileges_permanently();
1068
perror_plus("Failed to raise privileges");
1069
/* _exit(EX_NOPERM); */
1075
perror_plus("setgid");
1079
/* Reset supplementary groups */
1081
ret = setgroups(0, NULL);
1083
perror_plus("setgroups");
1088
ret = dup2(devnull, STDIN_FILENO);
1090
perror_plus("dup2(devnull, STDIN_FILENO)");
1094
ret = close(devnull);
1096
perror_plus("close");
1098
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1100
perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1103
int helperdir_fd = (int)TEMP_FAILURE_RETRY(open(pluginhelperdir,
1108
if(helperdir_fd == -1){
1109
perror_plus("open");
1110
_exit(EX_UNAVAILABLE);
1112
int helper_fd = (int)TEMP_FAILURE_RETRY(openat(helperdir_fd,
1114
if(helper_fd == -1){
1115
perror_plus("openat");
1116
close(helperdir_fd);
1117
_exit(EX_UNAVAILABLE);
1119
close(helperdir_fd);
1121
#pragma GCC diagnostic push
1122
#pragma GCC diagnostic ignored "-Wcast-qual"
1124
if(fexecve(helper_fd, (char *const [])
1125
{ helper, add ? add_arg : delete_arg, (char *)address,
1126
interface, debug ? debug_flag : NULL, NULL },
1129
#pragma GCC diagnostic pop
1131
perror_plus("fexecve");
1132
_exit(EXIT_FAILURE);
1136
perror_plus("fork");
1140
ret = close(devnull);
1142
perror_plus("close");
1148
pret = waitpid(pid, &status, 0);
1149
if(pret == -1 and errno == EINTR and quit_now){
1150
int errno_raising = 0;
1151
if((errno = raise_privileges()) != 0){
1152
errno_raising = errno;
1153
perror_plus("Failed to raise privileges in order to"
1154
" kill helper program");
1156
if(kill(pid, SIGTERM) == -1){
1157
perror_plus("kill");
1159
if((errno_raising == 0) and (errno = lower_privileges()) != 0){
1160
perror_plus("Failed to lower privileges after killing"
1165
} while(pret == -1 and errno == EINTR);
1167
perror_plus("waitpid");
1170
if(WIFEXITED(status)){
1171
if(WEXITSTATUS(status) != 0){
1172
fprintf_plus(stderr, "Error: iprouteadddel exited"
1173
" with status %d\n", WEXITSTATUS(status));
1178
if(WIFSIGNALED(status)){
1179
fprintf_plus(stderr, "Error: iprouteadddel died by"
1180
" signal %d\n", WTERMSIG(status));
1183
fprintf_plus(stderr, "Error: iprouteadddel crashed\n");
1187
__attribute__((nonnull, warn_unused_result))
1188
static bool add_local_route(const char *address,
1189
AvahiIfIndex if_index){
1191
fprintf_plus(stderr, "Adding route to %s\n", address);
1193
return add_delete_local_route(true, address, if_index);
1196
__attribute__((nonnull, warn_unused_result))
1197
static bool delete_local_route(const char *address,
1198
AvahiIfIndex if_index){
1200
fprintf_plus(stderr, "Removing route to %s\n", address);
1202
return add_delete_local_route(false, address, if_index);
1205
623
/* Called when a Mandos server is found */
1206
__attribute__((nonnull, warn_unused_result))
1207
624
static int start_mandos_communication(const char *ip, in_port_t port,
1208
625
AvahiIfIndex if_index,
1209
int af, mandos_context *mc){
1210
627
int ret, tcp_sd = -1;
1212
struct sockaddr_storage to;
630
struct sockaddr_in in;
631
struct sockaddr_in6 in6;
1213
633
char *buffer = NULL;
1214
634
char *decrypted_buffer = NULL;
1215
635
size_t buffer_length = 0;
1355
743
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
1356
744
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
1358
ret = getnameinfo((struct sockaddr *)&to,
1359
sizeof(struct sockaddr_in6),
1360
addrstr, sizeof(addrstr), NULL, 0,
1363
ret = getnameinfo((struct sockaddr *)&to,
1364
sizeof(struct sockaddr_in),
1365
addrstr, sizeof(addrstr), NULL, 0,
1368
if(ret == EAI_SYSTEM){
1369
perror_plus("getnameinfo");
1370
} else if(ret != 0) {
1371
fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
1372
} else if(strcmp(addrstr, ip) != 0){
1373
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
1384
ret = connect(tcp_sd, (struct sockaddr *)&to,
1385
sizeof(struct sockaddr_in6));
1387
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
1388
sizeof(struct sockaddr_in));
1391
if(((errno == ENETUNREACH) or (errno == EHOSTUNREACH))
1392
and if_index != AVAHI_IF_UNSPEC
1393
and connect_to == NULL
1394
and not route_added and
1395
((af == AF_INET6 and not
1396
IN6_IS_ADDR_LINKLOCAL(&(((struct sockaddr_in6 *)
1398
or (af == AF_INET and
1399
/* Not a a IPv4LL address */
1400
(ntohl(((struct sockaddr_in *)&to)->sin_addr.s_addr)
1401
& 0xFFFF0000L) != 0xA9FE0000L))){
1402
/* Work around Avahi bug - Avahi does not announce link-local
1403
addresses if it has a global address, so local hosts with
1404
*only* a link-local address (e.g. Mandos clients) cannot
1405
connect to a Mandos server announced by Avahi on a server
1406
host with a global address. Work around this by retrying
1407
with an explicit route added with the server's address.
1409
Avahi bug reference:
1410
https://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1411
https://bugs.debian.org/587961
1414
fprintf_plus(stderr, "Mandos server unreachable, trying"
1418
route_added = add_local_route(ip, if_index);
1424
if(errno != ECONNREFUSED or debug){
1426
perror_plus("connect");
747
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
750
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
754
perror_plus("inet_ntop");
756
if(strcmp(addrstr, ip) != 0){
757
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
768
ret = connect(tcp_sd, &to.in6, sizeof(to));
770
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
773
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
775
perror_plus("connect");
1439
786
const char *out = mandos_protocol_version;
2073
1383
ret = avahi_simple_poll_iterate(s, (int)block_time);
2076
if(ret > 0 or errno != EINTR){
1386
if (ret > 0 or errno != EINTR){
2077
1387
return (ret != 1) ? ret : 0;
2083
__attribute__((nonnull))
2084
void run_network_hooks(const char *mode, const char *interface,
1393
/* Set effective uid to 0, return errno */
1394
error_t raise_privileges(void){
1395
error_t old_errno = errno;
1396
error_t ret_errno = 0;
1397
if(seteuid(0) == -1){
1399
perror_plus("seteuid");
1405
/* Set effective and real user ID to 0. Return errno. */
1406
error_t raise_privileges_permanently(void){
1407
error_t old_errno = errno;
1408
error_t ret_errno = raise_privileges();
1413
if(setuid(0) == -1){
1415
perror_plus("seteuid");
1421
/* Set effective user ID to unprivileged saved user ID */
1422
error_t lower_privileges(void){
1423
error_t old_errno = errno;
1424
error_t ret_errno = 0;
1425
if(seteuid(uid) == -1){
1427
perror_plus("seteuid");
1433
/* Lower privileges permanently */
1434
error_t lower_privileges_permanently(void){
1435
error_t old_errno = errno;
1436
error_t ret_errno = 0;
1437
if(setuid(uid) == -1){
1439
perror_plus("setuid");
1445
bool run_network_hooks(const char *mode, const char *interface,
2085
1446
const float delay){
2086
struct dirent **direntries = NULL;
2087
if(hookdir_fd == -1){
2088
hookdir_fd = open(hookdir, O_RDONLY | O_DIRECTORY | O_PATH
2090
if(hookdir_fd == -1){
2091
if(errno == ENOENT){
2093
fprintf_plus(stderr, "Network hook directory \"%s\" not"
2094
" found\n", hookdir);
2097
perror_plus("open");
2102
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
2104
perror_plus("open(\"/dev/null\", O_RDONLY)");
2107
int numhooks = scandirat(hookdir_fd, ".", &direntries,
2108
runnable_hook, alphasort);
1447
struct dirent **direntries;
1448
struct dirent *direntry;
1450
int numhooks = scandir(hookdir, &direntries, runnable_hook,
2109
1452
if(numhooks == -1){
2110
perror_plus("scandir");
2114
struct dirent *direntry;
2116
for(int i = 0; i < numhooks; i++){
2117
direntry = direntries[i];
2119
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1453
if(errno == ENOENT){
1455
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1456
" found\n", hookdir);
1459
perror_plus("scandir");
2122
pid_t hook_pid = fork();
2125
/* Raise privileges */
2126
errno = raise_privileges_permanently();
2128
perror_plus("Failed to raise privileges");
2135
perror_plus("setgid");
2138
/* Reset supplementary groups */
2140
ret = setgroups(0, NULL);
2142
perror_plus("setgroups");
2145
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
2147
perror_plus("setenv");
2150
ret = setenv("DEVICE", interface, 1);
2152
perror_plus("setenv");
2155
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
2157
perror_plus("setenv");
2160
ret = setenv("MODE", mode, 1);
2162
perror_plus("setenv");
2166
ret = asprintf(&delaystring, "%f", (double)delay);
1462
int devnull = open("/dev/null", O_RDONLY);
1463
for(int i = 0; i < numhooks; i++){
1464
direntry = direntries[i];
1465
char *fullname = NULL;
1466
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
2168
1468
perror_plus("asprintf");
2171
ret = setenv("DELAY", delaystring, 1);
1472
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1475
pid_t hook_pid = fork();
1478
/* Raise privileges */
1479
raise_privileges_permanently();
1484
perror_plus("setgid");
1486
/* Reset supplementary groups */
1488
ret = setgroups(0, NULL);
1490
perror_plus("setgroups");
1492
dup2(devnull, STDIN_FILENO);
1494
dup2(STDERR_FILENO, STDOUT_FILENO);
1495
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1497
perror_plus("setenv");
1500
ret = setenv("DEVICE", interface, 1);
1502
perror_plus("setenv");
1505
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1507
perror_plus("setenv");
1510
ret = setenv("MODE", mode, 1);
1512
perror_plus("setenv");
1516
ret = asprintf(&delaystring, "%f", delay);
1518
perror_plus("asprintf");
1521
ret = setenv("DELAY", delaystring, 1);
1524
perror_plus("setenv");
2173
1527
free(delaystring);
2174
perror_plus("setenv");
2178
if(connect_to != NULL){
2179
ret = setenv("CONNECT", connect_to, 1);
2181
perror_plus("setenv");
2185
int hook_fd = (int)TEMP_FAILURE_RETRY(openat(hookdir_fd,
2189
perror_plus("openat");
2190
_exit(EXIT_FAILURE);
2192
if(close(hookdir_fd) == -1){
2193
perror_plus("close");
2194
_exit(EXIT_FAILURE);
2196
ret = dup2(devnull, STDIN_FILENO);
2198
perror_plus("dup2(devnull, STDIN_FILENO)");
2201
ret = close(devnull);
2203
perror_plus("close");
2206
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
2208
perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
2211
if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },
2213
perror_plus("fexecve");
2214
_exit(EXIT_FAILURE);
2218
perror_plus("fork");
2223
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
2224
perror_plus("waitpid");
2228
if(WIFEXITED(status)){
2229
if(WEXITSTATUS(status) != 0){
2230
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
2231
" with status %d\n", direntry->d_name,
2232
WEXITSTATUS(status));
2236
} else if(WIFSIGNALED(status)){
2237
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
2238
" signal %d\n", direntry->d_name,
1528
if(connect_to != NULL){
1529
ret = setenv("CONNECT", connect_to, 1);
1531
perror_plus("setenv");
1535
if(execl(fullname, direntry->d_name, mode, NULL) == -1){
1536
perror_plus("execl");
1537
_exit(EXIT_FAILURE);
2243
fprintf_plus(stderr, "Warning: network hook \"%s\""
2244
" crashed\n", direntry->d_name);
2250
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
2256
if(close(hookdir_fd) == -1){
2257
perror_plus("close");
1541
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1542
perror_plus("waitpid");
1546
if(WIFEXITED(status)){
1547
if(WEXITSTATUS(status) != 0){
1548
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1549
" with status %d\n", direntry->d_name,
1550
WEXITSTATUS(status));
1554
} else if(WIFSIGNALED(status)){
1555
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1556
" signal %d\n", direntry->d_name,
1561
fprintf_plus(stderr, "Warning: network hook \"%s\""
1562
" crashed\n", direntry->d_name);
1569
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
2264
__attribute__((nonnull, warn_unused_result))
2265
int bring_up_interface(const char *const interface,
2267
int old_errno = errno;
1578
error_t bring_up_interface(const char *const interface,
1581
error_t old_errno = errno;
1582
error_t ret_errno = 0;
1583
int ret, ret_setflags;
2269
1584
struct ifreq network;
2270
1585
unsigned int if_index = if_nametoindex(interface);
2271
1586
if(if_index == 0){
2468
1750
int main(int argc, char *argv[]){
2469
mandos_context mc = { .server = NULL, .dh_bits = 0,
2470
#if GNUTLS_VERSION_NUMBER >= 0x030606
2471
.priority = "SECURE128:!CTYPE-X.509"
2472
":+CTYPE-RAWPK:!RSA:!VERS-ALL:+VERS-TLS1.3"
2474
#elif GNUTLS_VERSION_NUMBER < 0x030600
2475
.priority = "SECURE256:!CTYPE-X.509"
2476
":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
2478
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
2480
.current_server = NULL, .interfaces = NULL,
2481
.interfaces_size = 0 };
2482
1751
AvahiSServiceBrowser *sb = NULL;
2483
1752
error_t ret_errno;
2485
1754
intmax_t tmpmax;
2487
1756
int exitcode = EXIT_SUCCESS;
1757
char *interfaces = NULL;
1758
size_t interfaces_size = 0;
2488
1759
char *interfaces_to_take_down = NULL;
2489
1760
size_t interfaces_to_take_down_size = 0;
2490
char run_tempdir[] = "/run/tmp/mandosXXXXXX";
2491
char old_tempdir[] = "/tmp/mandosXXXXXX";
2492
char *tempdir = NULL;
1761
char tempdir[] = "/tmp/mandosXXXXXX";
1762
bool tempdir_created = false;
2493
1763
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
2494
1764
const char *seckey = PATHDIR "/" SECKEY;
2495
1765
const char *pubkey = PATHDIR "/" PUBKEY;
2496
#if GNUTLS_VERSION_NUMBER >= 0x030606
2497
const char *tls_privkey = PATHDIR "/" TLS_PRIVKEY;
2498
const char *tls_pubkey = PATHDIR "/" TLS_PUBKEY;
2500
const char *dh_params_file = NULL;
2501
1766
char *interfaces_hooks = NULL;
1767
size_t interfaces_hooks_size = 0;
2503
1769
bool gnutls_initialized = false;
2504
1770
bool gpgme_initialized = false;
2550
1816
{ .name = "pubkey", .key = 'p',
2552
1818
.doc = "OpenPGP public key file base name",
2554
{ .name = "tls-privkey", .key = 't',
2556
#if GNUTLS_VERSION_NUMBER >= 0x030606
2557
.doc = "TLS private key file base name",
2559
.doc = "Dummy; ignored (requires GnuTLS 3.6.6)",
2562
{ .name = "tls-pubkey", .key = 'T',
2564
#if GNUTLS_VERSION_NUMBER >= 0x030606
2565
.doc = "TLS public key file base name",
2567
.doc = "Dummy; ignored (requires GnuTLS 3.6.6)",
2570
1820
{ .name = "dh-bits", .key = 129,
2572
1822
.doc = "Bit length of the prime number used in the"
2573
1823
" Diffie-Hellman key exchange",
2575
{ .name = "dh-params", .key = 134,
2577
.doc = "PEM-encoded PKCS#3 file with pre-generated parameters"
2578
" for the Diffie-Hellman key exchange",
2580
1825
{ .name = "priority", .key = 130,
2581
1826
.arg = "STRING",
2582
1827
.doc = "GnuTLS priority string for the TLS handshake",
2771
if(dh_params_file != NULL
2772
and strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
2773
int dhparams_fd = open(dh_params_file, O_RDONLY);
2774
if(dhparams_fd == -1){
2775
perror_plus("open");
2777
ret = (int)TEMP_FAILURE_RETRY(fstat(dhparams_fd, &st));
2779
perror_plus("fstat");
2781
if(S_ISREG(st.st_mode)
2782
and st.st_uid == 0 and st.st_gid == 0){
2783
ret = fchown(dhparams_fd, uid, gid);
2785
perror_plus("fchown");
2793
/* Work around Debian bug #981302
2794
<https://bugs.debian.org/981302> */
2795
if(lstat("/dev/fd", &st) != 0 and errno == ENOENT){
2796
ret = symlink("/proc/self/fd", "/dev/fd");
2798
perror_plus("Failed to create /dev/fd symlink");
1993
TEMP_FAILURE_RETRY(close(pubkey_fd));
2802
1997
/* Lower privileges */
2803
ret = lower_privileges();
2806
perror_plus("Failed to lower privileges");
2001
perror_plus("seteuid");
2811
/* Remove invalid interface names (except "none") */
2006
/* Remove empty interface names */
2813
2008
char *interface = NULL;
2814
while((interface = argz_next(mc.interfaces, mc.interfaces_size,
2009
while((interface = argz_next(interfaces, interfaces_size,
2816
if(strcmp(interface, "none") != 0
2817
and if_nametoindex(interface) == 0){
2818
if(interface[0] != '\0'){
2011
if(if_nametoindex(interface) == 0){
2012
if(interface[0] != '\0' and strcmp(interface, "none") != 0){
2819
2013
fprintf_plus(stderr, "Not using nonexisting interface"
2820
2014
" \"%s\"\n", interface);
2822
argz_delete(&mc.interfaces, &mc.interfaces_size, interface);
2016
argz_delete(&interfaces, &interfaces_size, interface);
2823
2017
interface = NULL;
2922
2121
/* If no interfaces were specified, make a list */
2923
if(mc.interfaces == NULL){
2924
struct dirent **direntries = NULL;
2122
if(interfaces == NULL){
2123
struct dirent **direntries;
2925
2124
/* Look for any good interfaces */
2926
2125
ret = scandir(sys_class_net, &direntries, good_interface,
2929
2128
/* Add all found interfaces to interfaces list */
2930
2129
for(int i = 0; i < ret; ++i){
2931
ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
2130
ret_errno = argz_add(&interfaces, &interfaces_size,
2932
2131
direntries[i]->d_name);
2933
2132
if(ret_errno != 0){
2935
2133
perror_plus("argz_add");
2936
free(direntries[i]);
2940
2137
fprintf_plus(stderr, "Will use interface \"%s\"\n",
2941
2138
direntries[i]->d_name);
2943
free(direntries[i]);
2945
2141
free(direntries);
2950
2144
fprintf_plus(stderr, "Could not find a network interface\n");
2951
2145
exitcode = EXIT_FAILURE;
2956
/* Bring up interfaces which are down, and remove any "none"s */
2150
/* If we only got one interface, explicitly use only that one */
2151
if(argz_count(interfaces, interfaces_size) == 1){
2153
fprintf_plus(stderr, "Using only interface \"%s\"\n",
2156
if_index = (AvahiIfIndex)if_nametoindex(interfaces);
2159
/* Bring up interfaces which are down */
2160
if(not (argz_count(interfaces, interfaces_size) == 1
2161
and strcmp(interfaces, "none") == 0)){
2958
2162
char *interface = NULL;
2959
while((interface = argz_next(mc.interfaces, mc.interfaces_size,
2163
while((interface = argz_next(interfaces, interfaces_size,
2961
/* If interface name is "none", stop bringing up interfaces.
2962
Also remove all instances of "none" from the list */
2963
if(strcmp(interface, "none") == 0){
2964
argz_delete(&mc.interfaces, &mc.interfaces_size,
2967
while((interface = argz_next(mc.interfaces,
2968
mc.interfaces_size, interface))){
2969
if(strcmp(interface, "none") == 0){
2970
argz_delete(&mc.interfaces, &mc.interfaces_size,
2977
2165
bool interface_was_up = interface_is_up(interface);
2978
errno = bring_up_interface(interface, delay);
2166
ret = bring_up_interface(interface, delay);
2979
2167
if(not interface_was_up){
2981
fprintf_plus(stderr, "Failed to bring up interface \"%s\":"
2982
" %s\n", interface, strerror(errno));
2170
perror_plus("Failed to bring up interface");
2984
errno = argz_add(&interfaces_to_take_down,
2985
&interfaces_to_take_down_size,
2988
perror_plus("argz_add");
2172
ret_errno = argz_add(&interfaces_to_take_down,
2173
&interfaces_to_take_down_size,
2180
interfaces_size = 0;
2993
2181
if(debug and (interfaces_to_take_down == NULL)){
2994
2182
fprintf_plus(stderr, "No interfaces were brought up\n");
2998
/* If we only got one interface, explicitly use only that one */
2999
if(argz_count(mc.interfaces, mc.interfaces_size) == 1){
3001
fprintf_plus(stderr, "Using only interface \"%s\"\n",
3004
if_index = (AvahiIfIndex)if_nametoindex(mc.interfaces);
3011
#if GNUTLS_VERSION_NUMBER >= 0x030606
3012
ret = init_gnutls_global(tls_pubkey, tls_privkey, dh_params_file, &mc);
3013
#elif GNUTLS_VERSION_NUMBER < 0x030600
3014
ret = init_gnutls_global(pubkey, seckey, dh_params_file, &mc);
3016
#error "Needs GnuTLS 3.6.6 or later, or before 3.6.0"
2190
ret = init_gnutls_global(pubkey, seckey);
3019
2192
fprintf_plus(stderr, "init_gnutls_global failed\n");
3020
2193
exitcode = EX_UNAVAILABLE;
3228
2385
mc.current_server->prev->next = NULL;
3229
2386
while(mc.current_server != NULL){
3230
2387
server *next = mc.current_server->next;
3232
#pragma GCC diagnostic push
3233
#pragma GCC diagnostic ignored "-Wcast-qual"
3235
free((char *)(mc.current_server->ip));
3237
#pragma GCC diagnostic pop
3239
2388
free(mc.current_server);
3240
2389
mc.current_server = next;
3244
/* Re-raise privileges */
2393
/* Re-raise priviliges */
3246
ret = raise_privileges();
3249
perror_plus("Failed to raise privileges");
3252
/* Run network hooks */
3253
run_network_hooks("stop", interfaces_hooks != NULL ?
3254
interfaces_hooks : "", delay);
3256
/* Take down the network interfaces which were brought up */
3258
char *interface = NULL;
3259
while((interface = argz_next(interfaces_to_take_down,
3260
interfaces_to_take_down_size,
3262
ret = take_down_interface(interface);
3265
perror_plus("Failed to take down interface");
3268
if(debug and (interfaces_to_take_down == NULL)){
3269
fprintf_plus(stderr, "No interfaces needed to be taken"
3275
ret = lower_privileges_permanently();
3278
perror_plus("Failed to lower privileges permanently");
2397
/* Run network hooks */
2398
run_network_hooks("stop", interfaces_hooks != NULL ?
2399
interfaces_hooks : "", delay);
2401
/* Take down the network interfaces which were brought up */
2403
char *interface = NULL;
2404
while((interface=argz_next(interfaces_to_take_down,
2405
interfaces_to_take_down_size,
2407
ret_errno = take_down_interface(interface);
2410
perror_plus("Failed to take down interface");
2413
if(debug and (interfaces_to_take_down == NULL)){
2414
fprintf_plus(stderr, "No interfaces needed to be taken"
2419
lower_privileges_permanently();
3282
2422
free(interfaces_to_take_down);
3283
2423
free(interfaces_hooks);
3285
void clean_dir_at(int base, const char * const dirname,
2425
/* Removes the GPGME temp directory and all files inside */
2426
if(tempdir_created){
3287
2427
struct dirent **direntries = NULL;
3289
int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3295
perror_plus("open");
3298
int numentries = scandirat(dir_fd, ".", &direntries,
3299
notdotentries, alphasort);
3300
if(numentries >= 0){
2428
struct dirent *direntry = NULL;
2429
int numentries = scandir(tempdir, &direntries, notdotentries,
2431
if (numentries > 0){
3301
2432
for(int i = 0; i < numentries; i++){
3303
fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3304
dirname, direntries[i]->d_name);
3306
dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3308
if(errno == EISDIR){
3309
dret = unlinkat(dir_fd, direntries[i]->d_name,
3312
if((dret == -1) and (errno == ENOTEMPTY)
3313
and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3314
== 0) and (level == 0)){
3315
/* Recurse only in this special case */
3316
clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3319
if((dret == -1) and (errno != ENOENT)){
3320
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3321
direntries[i]->d_name, strerror(errno));
3324
free(direntries[i]);
3327
/* need to clean even if 0 because man page doesn't specify */
3329
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3330
if(dret == -1 and errno != ENOENT){
3331
perror_plus("rmdir");
3334
perror_plus("scandirat");
3339
/* Removes the GPGME temp directory and all files inside */
3340
if(tempdir != NULL){
3341
clean_dir_at(-1, tempdir, 0);
2433
direntry = direntries[i];
2434
char *fullname = NULL;
2435
ret = asprintf(&fullname, "%s/%s", tempdir,
2438
perror_plus("asprintf");
2441
ret = remove(fullname);
2443
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2450
/* need to clean even if 0 because man page doesn't specify */
2452
if (numentries == -1){
2453
perror_plus("scandir");
2455
ret = rmdir(tempdir);
2456
if(ret == -1 and errno != ENOENT){
2457
perror_plus("rmdir");