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- Committer: Teddy Hogeborn
- Date: 2009-01-27 00:07:26 UTC
- Revision ID: teddy@fukt.bsnet.se-20090127000726-4cafcfy35g8kh2b8
* INSTALL (Prerequisites/Mandos Server): Added "PyGObject".
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
36
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
37
38
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), remove() */
39
stdout, ferror(), sscanf(),
40
remove() */
40
41
#include <stdint.h> /* uint16_t, uint32_t */
41
42
#include <stddef.h> /* NULL, size_t, ssize_t */
42
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand(), strtof() */
44
#include <stdbool.h> /* bool, false, true */
44
srand() */
45
#include <stdbool.h> /* bool, true */
45
46
#include <string.h> /* memset(), strcmp(), strlen(),
46
47
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/ioctl.h> /* ioctl */
48
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
50
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, uid_t, gid_t, open(),
51
opendir(), DIR */
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
52
54
#include <sys/stat.h> /* open() */
53
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
inet_pton(), connect() */
56
struct in6_addr, inet_pton(),
57
connect() */
55
58
#include <fcntl.h> /* open() */
56
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
57
60
*/
58
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
59
strtoimax() */
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
60
62
#include <assert.h> /* assert() */
61
63
#include <errno.h> /* perror(), errno */
62
#include <time.h> /* nanosleep(), time() */
64
#include <time.h> /* time() */
63
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
66
SIOCSIFFLAGS, if_indextoname(),
65
67
if_nametoindex(), IF_NAMESIZE */
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
68
*/
68
#include <netinet/in.h>
69
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
70
getuid(), getgid(), setuid(),
71
71
setgid() */
72
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, or, and */
73
#include <iso646.h> /* not, and, or */
74
74
#include <argp.h> /* struct argp_option, error_t, struct
75
75
argp_state, struct argp,
76
76
argp_parse(), ARGP_KEY_ARG,
77
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <signal.h> /* sigemptyset(), sigaddset(),
79
sigaction(), SIGTERM, sigaction,
80
sig_atomic_t */
81
82
#ifdef __linux__
83
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
85
78
86
79
/* Avahi */
87
80
/* All Avahi types, constants and functions
133
126
gpgme_ctx_t ctx;
134
127
} mandos_context;
135
128
136
/* global context so signal handler can reach it*/
137
mandos_context mc = { .simple_poll = NULL, .server = NULL,
138
.dh_bits = 1024, .priority = "SECURE256"
139
":!CTYPE-X.509:+CTYPE-OPENPGP" };
140
141
129
/*
142
* Make additional room in "buffer" for at least BUFFER_SIZE more
143
* bytes. "buffer_capacity" is how much is currently allocated,
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "buffer_capacity" is how much is currently allocated,
144
132
* "buffer_length" is how much is already used.
145
133
*/
146
size_t incbuffer(char **buffer, size_t buffer_length,
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
147
135
size_t buffer_capacity){
148
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
149
137
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
146
/*
159
147
* Initialize GPGME.
160
148
*/
161
static bool init_gpgme(const char *seckey,
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
162
150
const char *pubkey, const char *tempdir){
163
151
int ret;
164
152
gpgme_error_t rc;
166
154
167
155
168
156
/*
169
* Helper function to insert pub and seckey to the engine keyring.
157
* Helper function to insert pub and seckey to the enigne keyring.
170
158
*/
171
159
bool import_key(const char *filename){
172
160
int fd;
185
173
return false;
186
174
}
187
175
188
rc = gpgme_op_import(mc.ctx, pgp_data);
176
rc = gpgme_op_import(mc->ctx, pgp_data);
189
177
if(rc != GPG_ERR_NO_ERROR){
190
178
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
191
179
gpgme_strsource(rc), gpgme_strerror(rc));
201
189
}
202
190
203
191
if(debug){
204
fprintf(stderr, "Initializing GPGME\n");
192
fprintf(stderr, "Initialize gpgme\n");
205
193
}
206
194
207
195
/* Init GPGME */
234
222
}
235
223
236
224
/* Create new GPGME "context" */
237
rc = gpgme_new(&(mc.ctx));
225
rc = gpgme_new(&(mc->ctx));
238
226
if(rc != GPG_ERR_NO_ERROR){
239
227
fprintf(stderr, "bad gpgme_new: %s: %s\n",
240
228
gpgme_strsource(rc), gpgme_strerror(rc));
252
240
* Decrypt OpenPGP data.
253
241
* Returns -1 on error
254
242
*/
255
static ssize_t pgp_packet_decrypt(const char *cryptotext,
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
256
245
size_t crypto_size,
257
246
char **plaintext){
258
247
gpgme_data_t dh_crypto, dh_plain;
285
274
286
275
/* Decrypt data from the cryptotext data buffer to the plaintext
287
276
data buffer */
288
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
289
278
if(rc != GPG_ERR_NO_ERROR){
290
279
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
291
280
gpgme_strsource(rc), gpgme_strerror(rc));
292
281
plaintext_length = -1;
293
282
if(debug){
294
283
gpgme_decrypt_result_t result;
295
result = gpgme_op_decrypt_result(mc.ctx);
284
result = gpgme_op_decrypt_result(mc->ctx);
296
285
if(result == NULL){
297
286
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
298
287
} else {
334
323
335
324
*plaintext = NULL;
336
325
while(true){
337
plaintext_capacity = incbuffer(plaintext,
326
plaintext_capacity = adjustbuffer(plaintext,
338
327
(size_t)plaintext_length,
339
328
plaintext_capacity);
340
329
if(plaintext_capacity == 0){
341
perror("incbuffer");
330
perror("adjustbuffer");
342
331
plaintext_length = -1;
343
332
goto decrypt_end;
344
333
}
376
365
return plaintext_length;
377
366
}
378
367
379
static const char * safer_gnutls_strerror(int value){
368
static const char * safer_gnutls_strerror(int value) {
380
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
381
370
-Wunreachable-code */
382
371
if(ret == NULL)
390
379
fprintf(stderr, "GnuTLS: %s", string);
391
380
}
392
381
393
static int init_gnutls_global(const char *pubkeyfilename,
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
394
384
const char *seckeyfilename){
395
385
int ret;
396
386
399
389
}
400
390
401
391
ret = gnutls_global_init();
402
if(ret != GNUTLS_E_SUCCESS){
392
if(ret != GNUTLS_E_SUCCESS) {
403
393
fprintf(stderr, "GnuTLS global_init: %s\n",
404
394
safer_gnutls_strerror(ret));
405
395
return -1;
414
404
}
415
405
416
406
/* OpenPGP credentials */
417
gnutls_certificate_allocate_credentials(&mc.cred);
407
gnutls_certificate_allocate_credentials(&mc->cred);
418
408
if(ret != GNUTLS_E_SUCCESS){
419
409
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
420
from
421
-Wunreachable-code
422
*/
410
* from
411
* -Wunreachable-code
412
*/
423
413
safer_gnutls_strerror(ret));
424
414
gnutls_global_deinit();
425
415
return -1;
432
422
}
433
423
434
424
ret = gnutls_certificate_set_openpgp_key_file
435
(mc.cred, pubkeyfilename, seckeyfilename,
425
(mc->cred, pubkeyfilename, seckeyfilename,
436
426
GNUTLS_OPENPGP_FMT_BASE64);
437
if(ret != GNUTLS_E_SUCCESS){
427
if(ret != GNUTLS_E_SUCCESS) {
438
428
fprintf(stderr,
439
429
"Error[%d] while reading the OpenPGP key pair ('%s',"
440
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
444
434
}
445
435
446
436
/* GnuTLS server initialization */
447
ret = gnutls_dh_params_init(&mc.dh_params);
448
if(ret != GNUTLS_E_SUCCESS){
437
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
449
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
450
440
" %s\n", safer_gnutls_strerror(ret));
451
441
goto globalfail;
452
442
}
453
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
454
if(ret != GNUTLS_E_SUCCESS){
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
455
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
456
446
safer_gnutls_strerror(ret));
457
447
goto globalfail;
458
448
}
459
449
460
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
461
451
462
452
return 0;
463
453
464
454
globalfail:
465
455
466
gnutls_certificate_free_credentials(mc.cred);
456
gnutls_certificate_free_credentials(mc->cred);
467
457
gnutls_global_deinit();
468
gnutls_dh_params_deinit(mc.dh_params);
458
gnutls_dh_params_deinit(mc->dh_params);
469
459
return -1;
470
460
}
471
461
472
static int init_gnutls_session(gnutls_session_t *session){
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
473
464
int ret;
474
465
/* GnuTLS session creation */
475
466
ret = gnutls_init(session, GNUTLS_SERVER);
480
471
481
472
{
482
473
const char *err;
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
484
if(ret != GNUTLS_E_SUCCESS){
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
485
476
fprintf(stderr, "Syntax error at: %s\n", err);
486
477
fprintf(stderr, "GnuTLS error: %s\n",
487
478
safer_gnutls_strerror(ret));
491
482
}
492
483
493
484
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
494
mc.cred);
495
if(ret != GNUTLS_E_SUCCESS){
485
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
496
487
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
497
488
safer_gnutls_strerror(ret));
498
489
gnutls_deinit(*session);
503
494
gnutls_certificate_server_set_request(*session,
504
495
GNUTLS_CERT_IGNORE);
505
496
506
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
507
498
508
499
return 0;
509
500
}
515
506
/* Called when a Mandos server is found */
516
507
static int start_mandos_communication(const char *ip, uint16_t port,
517
508
AvahiIfIndex if_index,
518
int af){
509
mandos_context *mc){
519
510
int ret, tcp_sd;
520
511
ssize_t sret;
521
union {
522
struct sockaddr_in in;
523
struct sockaddr_in6 in6;
524
} to;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
525
513
char *buffer = NULL;
526
514
char *decrypted_buffer;
527
515
size_t buffer_length = 0;
529
517
ssize_t decrypted_buffer_size;
530
518
size_t written;
531
519
int retval = 0;
520
char interface[IF_NAMESIZE];
532
521
gnutls_session_t session;
533
int pf; /* Protocol family */
534
535
switch(af){
536
case AF_INET6:
537
pf = PF_INET6;
538
break;
539
case AF_INET:
540
pf = PF_INET;
541
break;
542
default:
543
fprintf(stderr, "Bad address family: %d\n", af);
544
return -1;
545
}
546
547
ret = init_gnutls_session(&session);
522
523
ret = init_gnutls_session(mc, &session);
548
524
if(ret != 0){
549
525
return -1;
550
526
}
551
527
552
528
if(debug){
553
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
554
530
"\n", ip, port);
555
531
}
556
532
557
tcp_sd = socket(pf, SOCK_STREAM, 0);
558
if(tcp_sd < 0){
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
if(tcp_sd < 0) {
559
535
perror("socket");
560
536
return -1;
561
537
}
562
538
539
if(debug){
540
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
perror("if_indextoname");
542
return -1;
543
}
544
fprintf(stderr, "Binding to interface %s\n", interface);
545
}
546
563
547
memset(&to, 0, sizeof(to));
564
if(af == AF_INET6){
565
to.in6.sin6_family = (uint16_t)af;
566
ret = inet_pton(af, ip, &to.in6.sin6_addr);
567
} else { /* IPv4 */
568
to.in.sin_family = (sa_family_t)af;
569
ret = inet_pton(af, ip, &to.in.sin_addr);
570
}
548
to.in6.sin6_family = AF_INET6;
549
/* It would be nice to have a way to detect if we were passed an
550
IPv4 address here. Now we assume an IPv6 address. */
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
571
552
if(ret < 0 ){
572
553
perror("inet_pton");
573
554
return -1;
576
557
fprintf(stderr, "Bad address: %s\n", ip);
577
558
return -1;
578
559
}
579
if(af == AF_INET6){
580
to.in6.sin6_port = htons(port); /* Spurious warnings from
581
-Wconversion and
582
-Wunreachable-code */
583
584
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
585
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
586
-Wunreachable-code*/
587
if(if_index == AVAHI_IF_UNSPEC){
588
fprintf(stderr, "An IPv6 link-local address is incomplete"
589
" without a network interface\n");
590
return -1;
591
}
592
/* Set the network interface number as scope */
593
to.in6.sin6_scope_id = (uint32_t)if_index;
594
}
595
} else {
596
to.in.sin_port = htons(port); /* Spurious warnings from
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
597
561
-Wconversion and
598
562
-Wunreachable-code */
599
}
563
564
to.in6.sin6_scope_id = (uint32_t)if_index;
600
565
601
566
if(debug){
602
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
603
char interface[IF_NAMESIZE];
604
if(if_indextoname((unsigned int)if_index, interface) == NULL){
605
perror("if_indextoname");
606
} else {
607
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
608
ip, interface, port);
609
}
610
} else {
611
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
612
port);
613
}
614
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
615
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
616
const char *pcret;
617
if(af == AF_INET6){
618
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
619
sizeof(addrstr));
620
} else {
621
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
622
sizeof(addrstr));
623
}
624
if(pcret == NULL){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
569
char addrstr[INET6_ADDRSTRLEN] = "";
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
571
sizeof(addrstr)) == NULL){
625
572
perror("inet_ntop");
626
573
} else {
627
574
if(strcmp(addrstr, ip) != 0){
630
577
}
631
578
}
632
579
633
if(af == AF_INET6){
634
ret = connect(tcp_sd, &to.in6, sizeof(to));
635
} else {
636
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
637
}
580
ret = connect(tcp_sd, &to.in, sizeof(to));
638
581
if(ret < 0){
639
582
perror("connect");
640
583
return -1;
686
629
/* Read OpenPGP packet that contains the wanted password */
687
630
688
631
if(debug){
689
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
690
633
ip);
691
634
}
692
635
693
636
while(true){
694
buffer_capacity = incbuffer(&buffer, buffer_length,
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
695
638
buffer_capacity);
696
639
if(buffer_capacity == 0){
697
perror("incbuffer");
640
perror("adjustbuffer");
698
641
retval = -1;
699
642
goto mandos_end;
700
643
}
739
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
740
683
741
684
if(buffer_length > 0){
742
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
743
686
buffer_length,
744
687
&decrypted_buffer);
745
688
if(decrypted_buffer_size >= 0){
780
723
781
724
static void resolve_callback(AvahiSServiceResolver *r,
782
725
AvahiIfIndex interface,
783
AvahiProtocol proto,
726
AVAHI_GCC_UNUSED AvahiProtocol protocol,
784
727
AvahiResolverEvent event,
785
728
const char *name,
786
729
const char *type,
791
734
AVAHI_GCC_UNUSED AvahiStringList *txt,
792
735
AVAHI_GCC_UNUSED AvahiLookupResultFlags
793
736
flags,
794
AVAHI_GCC_UNUSED void* userdata){
737
void* userdata) {
738
mandos_context *mc = userdata;
795
739
assert(r);
796
740
797
741
/* Called whenever a service has been resolved successfully or
798
742
timed out */
799
743
800
switch(event){
744
switch(event) {
801
745
default:
802
746
case AVAHI_RESOLVER_FAILURE:
803
747
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
804
748
" of type '%s' in domain '%s': %s\n", name, type, domain,
805
avahi_strerror(avahi_server_errno(mc.server)));
749
avahi_strerror(avahi_server_errno(mc->server)));
806
750
break;
807
751
808
752
case AVAHI_RESOLVER_FOUND:
814
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
815
759
ip, (intmax_t)interface, port);
816
760
}
817
int ret = start_mandos_communication(ip, port, interface,
818
avahi_proto_to_af(proto));
761
int ret = start_mandos_communication(ip, port, interface, mc);
819
762
if(ret == 0){
820
avahi_simple_poll_quit(mc.simple_poll);
763
avahi_simple_poll_quit(mc->simple_poll);
821
764
}
822
765
}
823
766
}
824
767
avahi_s_service_resolver_free(r);
825
768
}
826
769
827
static void browse_callback(AvahiSServiceBrowser *b,
828
AvahiIfIndex interface,
829
AvahiProtocol protocol,
830
AvahiBrowserEvent event,
831
const char *name,
832
const char *type,
833
const char *domain,
834
AVAHI_GCC_UNUSED AvahiLookupResultFlags
835
flags,
836
AVAHI_GCC_UNUSED void* userdata){
770
static void browse_callback( AvahiSServiceBrowser *b,
771
AvahiIfIndex interface,
772
AvahiProtocol protocol,
773
AvahiBrowserEvent event,
774
const char *name,
775
const char *type,
776
const char *domain,
777
AVAHI_GCC_UNUSED AvahiLookupResultFlags
778
flags,
779
void* userdata) {
780
mandos_context *mc = userdata;
837
781
assert(b);
838
782
839
783
/* Called whenever a new services becomes available on the LAN or
840
784
is removed from the LAN */
841
785
842
switch(event){
786
switch(event) {
843
787
default:
844
788
case AVAHI_BROWSER_FAILURE:
845
789
846
790
fprintf(stderr, "(Avahi browser) %s\n",
847
avahi_strerror(avahi_server_errno(mc.server)));
848
avahi_simple_poll_quit(mc.simple_poll);
791
avahi_strerror(avahi_server_errno(mc->server)));
792
avahi_simple_poll_quit(mc->simple_poll);
849
793
return;
850
794
851
795
case AVAHI_BROWSER_NEW:
854
798
the callback function is called the Avahi server will free the
855
799
resolver for us. */
856
800
857
if(!(avahi_s_service_resolver_new(mc.server, interface,
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
858
802
protocol, name, type, domain,
859
803
AVAHI_PROTO_INET6, 0,
860
resolve_callback, NULL)))
804
resolve_callback, mc)))
861
805
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
862
name, avahi_strerror(avahi_server_errno(mc.server)));
806
name, avahi_strerror(avahi_server_errno(mc->server)));
863
807
break;
864
808
865
809
case AVAHI_BROWSER_REMOVE:
874
818
}
875
819
}
876
820
877
sig_atomic_t quit_now = 0;
878
879
/* stop main loop after sigterm has been called */
880
static void handle_sigterm(__attribute__((unused)) int sig){
881
if(quit_now){
882
return;
883
}
884
quit_now = 1;
885
int old_errno = errno;
886
if(mc.simple_poll != NULL){
887
avahi_simple_poll_quit(mc.simple_poll);
888
}
889
errno = old_errno;
890
}
891
892
821
int main(int argc, char *argv[]){
893
AvahiSServiceBrowser *sb = NULL;
894
int error;
895
int ret;
896
intmax_t tmpmax;
897
char *tmp;
898
int exitcode = EXIT_SUCCESS;
899
const char *interface = "eth0";
900
struct ifreq network;
901
int sd;
902
uid_t uid;
903
gid_t gid;
904
char *connect_to = NULL;
905
char tempdir[] = "/tmp/mandosXXXXXX";
906
bool tempdir_created = false;
907
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
908
const char *seckey = PATHDIR "/" SECKEY;
909
const char *pubkey = PATHDIR "/" PUBKEY;
910
911
/* Initialize Mandos context */
912
mc = (mandos_context){ .simple_poll = NULL, .server = NULL,
913
.dh_bits = 1024, .priority = "SECURE256"
914
":!CTYPE-X.509:+CTYPE-OPENPGP" };
915
bool gnutls_initialized = false;
916
bool gpgme_initialized = false;
917
float delay = 2.5f;
918
919
struct sigaction old_sigterm_action;
920
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
921
922
{
923
struct argp_option options[] = {
924
{ .name = "debug", .key = 128,
925
.doc = "Debug mode", .group = 3 },
926
{ .name = "connect", .key = 'c',
927
.arg = "ADDRESS:PORT",
928
.doc = "Connect directly to a specific Mandos server",
929
.group = 1 },
930
{ .name = "interface", .key = 'i',
931
.arg = "NAME",
932
.doc = "Network interface that will be used to search for"
933
" Mandos servers",
934
.group = 1 },
935
{ .name = "seckey", .key = 's',
936
.arg = "FILE",
937
.doc = "OpenPGP secret key file base name",
938
.group = 1 },
939
{ .name = "pubkey", .key = 'p',
940
.arg = "FILE",
941
.doc = "OpenPGP public key file base name",
942
.group = 2 },
943
{ .name = "dh-bits", .key = 129,
944
.arg = "BITS",
945
.doc = "Bit length of the prime number used in the"
946
" Diffie-Hellman key exchange",
947
.group = 2 },
948
{ .name = "priority", .key = 130,
949
.arg = "STRING",
950
.doc = "GnuTLS priority string for the TLS handshake",
951
.group = 1 },
952
{ .name = "delay", .key = 131,
953
.arg = "SECONDS",
954
.doc = "Maximum delay to wait for interface startup",
955
.group = 2 },
956
{ .name = NULL }
957
};
958
959
error_t parse_opt(int key, char *arg,
960
struct argp_state *state){
961
switch(key){
962
case 128: /* --debug */
963
debug = true;
964
break;
965
case 'c': /* --connect */
966
connect_to = arg;
967
break;
968
case 'i': /* --interface */
969
interface = arg;
970
break;
971
case 's': /* --seckey */
972
seckey = arg;
973
break;
974
case 'p': /* --pubkey */
975
pubkey = arg;
976
break;
977
case 129: /* --dh-bits */
978
errno = 0;
979
tmpmax = strtoimax(arg, &tmp, 10);
980
if(errno != 0 or tmp == arg or *tmp != '\0'
981
or tmpmax != (typeof(mc.dh_bits))tmpmax){
982
fprintf(stderr, "Bad number of DH bits\n");
983
exit(EXIT_FAILURE);
984
}
985
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
986
break;
987
case 130: /* --priority */
988
mc.priority = arg;
989
break;
990
case 131: /* --delay */
991
errno = 0;
992
delay = strtof(arg, &tmp);
993
if(errno != 0 or tmp == arg or *tmp != '\0'){
994
fprintf(stderr, "Bad delay\n");
995
exit(EXIT_FAILURE);
996
}
997
break;
998
case ARGP_KEY_ARG:
999
argp_usage(state);
1000
case ARGP_KEY_END:
1001
break;
1002
default:
1003
return ARGP_ERR_UNKNOWN;
1004
}
1005
return 0;
1006
}
1007
1008
struct argp argp = { .options = options, .parser = parse_opt,
1009
.args_doc = "",
1010
.doc = "Mandos client -- Get and decrypt"
1011
" passwords from a Mandos server" };
1012
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1013
if(ret == ARGP_ERR_UNKNOWN){
1014
fprintf(stderr, "Unknown error while parsing arguments\n");
1015
exitcode = EXIT_FAILURE;
1016
goto end;
1017
}
1018
}
1019
1020
if(not debug){
1021
avahi_set_log_function(empty_log);
1022
}
1023
1024
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1025
from the signal handler */
1026
/* Initialize the pseudo-RNG for Avahi */
1027
srand((unsigned int) time(NULL));
1028
mc.simple_poll = avahi_simple_poll_new();
1029
if(mc.simple_poll == NULL){
1030
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1031
exitcode = EXIT_FAILURE;
1032
goto end;
1033
}
1034
1035
sigemptyset(&sigterm_action.sa_mask);
1036
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1037
if(ret == -1){
1038
perror("sigaddset");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
}
1042
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1043
if(ret == -1){
1044
perror("sigaddset");
1045
exitcode = EXIT_FAILURE;
1046
goto end;
1047
}
1048
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1049
if(ret == -1){
1050
perror("sigaddset");
1051
exitcode = EXIT_FAILURE;
1052
goto end;
1053
}
1054
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1055
if(ret == -1){
1056
perror("sigaction");
1057
exitcode = EXIT_FAILURE;
1058
goto end;
1059
}
1060
1061
/* If the interface is down, bring it up */
1062
if(interface[0] != '\0'){
1063
#ifdef __linux__
1064
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1065
messages to mess up the prompt */
1066
ret = klogctl(8, NULL, 5);
1067
bool restore_loglevel = true;
1068
if(ret == -1){
1069
restore_loglevel = false;
1070
perror("klogctl");
1071
}
1072
#endif /* __linux__ */
1073
1074
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1075
if(sd < 0){
1076
perror("socket");
1077
exitcode = EXIT_FAILURE;
1078
#ifdef __linux__
1079
if(restore_loglevel){
1080
ret = klogctl(7, NULL, 0);
1081
if(ret == -1){
1082
perror("klogctl");
1083
}
1084
}
1085
#endif /* __linux__ */
1086
goto end;
1087
}
1088
strcpy(network.ifr_name, interface);
1089
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1090
if(ret == -1){
1091
perror("ioctl SIOCGIFFLAGS");
1092
#ifdef __linux__
1093
if(restore_loglevel){
1094
ret = klogctl(7, NULL, 0);
1095
if(ret == -1){
1096
perror("klogctl");
1097
}
1098
}
1099
#endif /* __linux__ */
1100
exitcode = EXIT_FAILURE;
1101
goto end;
1102
}
1103
if((network.ifr_flags & IFF_UP) == 0){
1104
network.ifr_flags |= IFF_UP;
1105
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1106
if(ret == -1){
1107
perror("ioctl SIOCSIFFLAGS");
1108
exitcode = EXIT_FAILURE;
1109
#ifdef __linux__
1110
if(restore_loglevel){
1111
ret = klogctl(7, NULL, 0);
1112
if(ret == -1){
1113
perror("klogctl");
822
AvahiSServiceBrowser *sb = NULL;
823
int error;
824
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
int exitcode = EXIT_SUCCESS;
828
const char *interface = "eth0";
829
struct ifreq network;
830
int sd;
831
uid_t uid;
832
gid_t gid;
833
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
839
mandos_context mc = { .simple_poll = NULL, .server = NULL,
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initialized = false;
843
bool gpgme_initialized = false;
844
845
{
846
struct argp_option options[] = {
847
{ .name = "debug", .key = 128,
848
.doc = "Debug mode", .group = 3 },
849
{ .name = "connect", .key = 'c',
850
.arg = "ADDRESS:PORT",
851
.doc = "Connect directly to a specific Mandos server",
852
.group = 1 },
853
{ .name = "interface", .key = 'i',
854
.arg = "NAME",
855
.doc = "Interface that will be used to search for Mandos"
856
" servers",
857
.group = 1 },
858
{ .name = "seckey", .key = 's',
859
.arg = "FILE",
860
.doc = "OpenPGP secret key file base name",
861
.group = 1 },
862
{ .name = "pubkey", .key = 'p',
863
.arg = "FILE",
864
.doc = "OpenPGP public key file base name",
865
.group = 2 },
866
{ .name = "dh-bits", .key = 129,
867
.arg = "BITS",
868
.doc = "Bit length of the prime number used in the"
869
" Diffie-Hellman key exchange",
870
.group = 2 },
871
{ .name = "priority", .key = 130,
872
.arg = "STRING",
873
.doc = "GnuTLS priority string for the TLS handshake",
874
.group = 1 },
875
{ .name = NULL }
876
};
877
878
error_t parse_opt(int key, char *arg,
879
struct argp_state *state) {
880
switch(key) {
881
case 128: /* --debug */
882
debug = true;
883
break;
884
case 'c': /* --connect */
885
connect_to = arg;
886
break;
887
case 'i': /* --interface */
888
interface = arg;
889
break;
890
case 's': /* --seckey */
891
seckey = arg;
892
break;
893
case 'p': /* --pubkey */
894
pubkey = arg;
895
break;
896
case 129: /* --dh-bits */
897
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
898
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
899
or arg[numchars] != '\0'){
900
fprintf(stderr, "Bad number of DH bits\n");
901
exit(EXIT_FAILURE);
1114
902
}
903
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
904
break;
905
case 130: /* --priority */
906
mc.priority = arg;
907
break;
908
case ARGP_KEY_ARG:
909
argp_usage(state);
910
case ARGP_KEY_END:
911
break;
912
default:
913
return ARGP_ERR_UNKNOWN;
1115
914
}
1116
#endif /* __linux__ */
915
return 0;
916
}
917
918
struct argp argp = { .options = options, .parser = parse_opt,
919
.args_doc = "",
920
.doc = "Mandos client -- Get and decrypt"
921
" passwords from a Mandos server" };
922
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
923
if(ret == ARGP_ERR_UNKNOWN){
924
fprintf(stderr, "Unknown error while parsing arguments\n");
925
exitcode = EXIT_FAILURE;
1117
926
goto end;
1118
927
}
1119
928
}
1120
/* sleep checking until interface is running */
1121
for(int i=0; i < delay * 4; i++){
929
930
/* If the interface is down, bring it up */
931
{
932
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
933
if(sd < 0) {
934
perror("socket");
935
exitcode = EXIT_FAILURE;
936
goto end;
937
}
938
strcpy(network.ifr_name, interface);
1122
939
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1123
940
if(ret == -1){
1124
941
perror("ioctl SIOCGIFFLAGS");
1125
} else if(network.ifr_flags & IFF_RUNNING){
1126
break;
1127
}
1128
struct timespec sleeptime = { .tv_nsec = 250000000 };
1129
ret = nanosleep(&sleeptime, NULL);
1130
if(ret == -1 and errno != EINTR){
1131
perror("nanosleep");
1132
}
1133
}
1134
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1135
if(ret == -1){
1136
perror("close");
1137
}
1138
#ifdef __linux__
1139
if(restore_loglevel){
1140
/* Restores kernel loglevel to default */
1141
ret = klogctl(7, NULL, 0);
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
if((network.ifr_flags & IFF_UP) == 0){
946
network.ifr_flags |= IFF_UP;
947
ret = ioctl(sd, SIOCSIFFLAGS, &network);
948
if(ret == -1){
949
perror("ioctl SIOCSIFFLAGS");
950
exitcode = EXIT_FAILURE;
951
goto end;
952
}
953
}
954
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1142
955
if(ret == -1){
1143
perror("klogctl");
956
perror("close");
1144
957
}
1145
958
}
1146
#endif /* __linux__ */
1147
}
1148
1149
uid = getuid();
1150
gid = getgid();
1151
1152
errno = 0;
1153
setgid(gid);
1154
if(ret == -1){
1155
perror("setgid");
1156
}
1157
1158
ret = setuid(uid);
1159
if(ret == -1){
1160
perror("setuid");
1161
}
1162
1163
ret = init_gnutls_global(pubkey, seckey);
1164
if(ret == -1){
1165
fprintf(stderr, "init_gnutls_global failed\n");
1166
exitcode = EXIT_FAILURE;
1167
goto end;
1168
} else {
1169
gnutls_initialized = true;
1170
}
1171
1172
if(mkdtemp(tempdir) == NULL){
1173
perror("mkdtemp");
1174
goto end;
1175
}
1176
tempdir_created = true;
1177
1178
if(not init_gpgme(pubkey, seckey, tempdir)){
1179
fprintf(stderr, "init_gpgme failed\n");
1180
exitcode = EXIT_FAILURE;
1181
goto end;
1182
} else {
1183
gpgme_initialized = true;
1184
}
1185
1186
if(interface[0] != '\0'){
959
960
uid = getuid();
961
gid = getgid();
962
963
ret = setuid(uid);
964
if(ret == -1){
965
perror("setuid");
966
}
967
968
setgid(gid);
969
if(ret == -1){
970
perror("setgid");
971
}
972
973
ret = init_gnutls_global(&mc, pubkey, seckey);
974
if(ret == -1){
975
fprintf(stderr, "init_gnutls_global failed\n");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
} else {
979
gnutls_initialized = true;
980
}
981
982
if(mkdtemp(tempdir) == NULL){
983
perror("mkdtemp");
984
tempdir[0] = '\0';
985
goto end;
986
}
987
988
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
989
fprintf(stderr, "init_gpgme failed\n");
990
exitcode = EXIT_FAILURE;
991
goto end;
992
} else {
993
gpgme_initialized = true;
994
}
995
1187
996
if_index = (AvahiIfIndex) if_nametoindex(interface);
1188
997
if(if_index == 0){
1189
998
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1190
exitcode = EXIT_FAILURE;
1191
goto end;
1192
}
1193
}
1194
1195
if(connect_to != NULL){
1196
/* Connect directly, do not use Zeroconf */
1197
/* (Mainly meant for debugging) */
1198
char *address = strrchr(connect_to, ':');
1199
if(address == NULL){
1200
fprintf(stderr, "No colon in address\n");
1201
exitcode = EXIT_FAILURE;
1202
goto end;
1203
}
1204
uint16_t port;
1205
errno = 0;
1206
tmpmax = strtoimax(address+1, &tmp, 10);
1207
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1208
or tmpmax != (uint16_t)tmpmax){
1209
fprintf(stderr, "Bad port number\n");
1210
exitcode = EXIT_FAILURE;
1211
goto end;
1212
}
1213
port = (uint16_t)tmpmax;
1214
*address = '\0';
1215
address = connect_to;
1216
/* Colon in address indicates IPv6 */
1217
int af;
1218
if(strchr(address, ':') != NULL){
1219
af = AF_INET6;
1220
} else {
1221
af = AF_INET;
1222
}
1223
ret = start_mandos_communication(address, port, if_index, af);
1224
if(ret < 0){
1225
exitcode = EXIT_FAILURE;
1226
} else {
1227
exitcode = EXIT_SUCCESS;
1228
}
1229
goto end;
1230
}
1231
1232
{
1233
AvahiServerConfig config;
1234
/* Do not publish any local Zeroconf records */
1235
avahi_server_config_init(&config);
1236
config.publish_hinfo = 0;
1237
config.publish_addresses = 0;
1238
config.publish_workstation = 0;
1239
config.publish_domain = 0;
1240
1241
/* Allocate a new server */
1242
mc.server = avahi_server_new(avahi_simple_poll_get
1243
(mc.simple_poll), &config, NULL,
1244
NULL, &error);
1245
1246
/* Free the Avahi configuration data */
1247
avahi_server_config_free(&config);
1248
}
1249
1250
/* Check if creating the Avahi server object succeeded */
1251
if(mc.server == NULL){
1252
fprintf(stderr, "Failed to create Avahi server: %s\n",
1253
avahi_strerror(error));
1254
exitcode = EXIT_FAILURE;
1255
goto end;
1256
}
1257
1258
/* Create the Avahi service browser */
1259
sb = avahi_s_service_browser_new(mc.server, if_index,
1260
AVAHI_PROTO_INET6, "_mandos._tcp",
1261
NULL, 0, browse_callback, NULL);
1262
if(sb == NULL){
1263
fprintf(stderr, "Failed to create service browser: %s\n",
1264
avahi_strerror(avahi_server_errno(mc.server)));
1265
exitcode = EXIT_FAILURE;
1266
goto end;
1267
}
1268
1269
/* Run the main loop */
1270
1271
if(debug){
1272
fprintf(stderr, "Starting Avahi loop search\n");
1273
}
1274
1275
avahi_simple_poll_loop(mc.simple_poll);
1276
999
exit(EXIT_FAILURE);
1000
}
1001
1002
if(connect_to != NULL){
1003
/* Connect directly, do not use Zeroconf */
1004
/* (Mainly meant for debugging) */
1005
char *address = strrchr(connect_to, ':');
1006
if(address == NULL){
1007
fprintf(stderr, "No colon in address\n");
1008
exitcode = EXIT_FAILURE;
1009
goto end;
1010
}
1011
uint16_t port;
1012
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1013
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1014
or address[numchars+1] != '\0'){
1015
fprintf(stderr, "Bad port number\n");
1016
exitcode = EXIT_FAILURE;
1017
goto end;
1018
}
1019
port = (uint16_t)tmpmax;
1020
*address = '\0';
1021
address = connect_to;
1022
ret = start_mandos_communication(address, port, if_index, &mc);
1023
if(ret < 0){
1024
exitcode = EXIT_FAILURE;
1025
} else {
1026
exitcode = EXIT_SUCCESS;
1027
}
1028
goto end;
1029
}
1030
1031
if(not debug){
1032
avahi_set_log_function(empty_log);
1033
}
1034
1035
/* Initialize the pseudo-RNG for Avahi */
1036
srand((unsigned int) time(NULL));
1037
1038
/* Allocate main Avahi loop object */
1039
mc.simple_poll = avahi_simple_poll_new();
1040
if(mc.simple_poll == NULL) {
1041
fprintf(stderr, "Avahi: Failed to create simple poll"
1042
" object.\n");
1043
exitcode = EXIT_FAILURE;
1044
goto end;
1045
}
1046
1047
{
1048
AvahiServerConfig config;
1049
/* Do not publish any local Zeroconf records */
1050
avahi_server_config_init(&config);
1051
config.publish_hinfo = 0;
1052
config.publish_addresses = 0;
1053
config.publish_workstation = 0;
1054
config.publish_domain = 0;
1055
1056
/* Allocate a new server */
1057
mc.server = avahi_server_new(avahi_simple_poll_get
1058
(mc.simple_poll), &config, NULL,
1059
NULL, &error);
1060
1061
/* Free the Avahi configuration data */
1062
avahi_server_config_free(&config);
1063
}
1064
1065
/* Check if creating the Avahi server object succeeded */
1066
if(mc.server == NULL) {
1067
fprintf(stderr, "Failed to create Avahi server: %s\n",
1068
avahi_strerror(error));
1069
exitcode = EXIT_FAILURE;
1070
goto end;
1071
}
1072
1073
/* Create the Avahi service browser */
1074
sb = avahi_s_service_browser_new(mc.server, if_index,
1075
AVAHI_PROTO_INET6,
1076
"_mandos._tcp", NULL, 0,
1077
browse_callback, &mc);
1078
if(sb == NULL) {
1079
fprintf(stderr, "Failed to create service browser: %s\n",
1080
avahi_strerror(avahi_server_errno(mc.server)));
1081
exitcode = EXIT_FAILURE;
1082
goto end;
1083
}
1084
1085
/* Run the main loop */
1086
1087
if(debug){
1088
fprintf(stderr, "Starting Avahi loop search\n");
1089
}
1090
1091
avahi_simple_poll_loop(mc.simple_poll);
1092
1277
1093
end:
1278
1279
if(debug){
1280
fprintf(stderr, "%s exiting\n", argv[0]);
1281
}
1282
1283
/* Cleanup things */
1284
if(sb != NULL)
1285
avahi_s_service_browser_free(sb);
1286
1287
if(mc.server != NULL)
1288
avahi_server_free(mc.server);
1289
1290
if(mc.simple_poll != NULL)
1291
avahi_simple_poll_free(mc.simple_poll);
1292
1293
if(gnutls_initialized){
1294
gnutls_certificate_free_credentials(mc.cred);
1295
gnutls_global_deinit();
1296
gnutls_dh_params_deinit(mc.dh_params);
1297
}
1298
1299
if(gpgme_initialized){
1300
gpgme_release(mc.ctx);
1301
}
1302
1303
/* Removes the temp directory used by GPGME */
1304
if(tempdir_created){
1305
DIR *d;
1306
struct dirent *direntry;
1307
d = opendir(tempdir);
1308
if(d == NULL){
1309
if(errno != ENOENT){
1310
perror("opendir");
1311
}
1312
} else {
1313
while(true){
1314
direntry = readdir(d);
1315
if(direntry == NULL){
1316
break;
1317
}
1318
/* Skip "." and ".." */
1319
if(direntry->d_name[0] == '.'
1320
and (direntry->d_name[1] == '\0'
1321
or (direntry->d_name[1] == '.'
1322
and direntry->d_name[2] == '\0'))){
1323
continue;
1324
}
1325
char *fullname = NULL;
1326
ret = asprintf(&fullname, "%s/%s", tempdir,
1327
direntry->d_name);
1328
if(ret < 0){
1329
perror("asprintf");
1330
continue;
1331
}
1332
ret = remove(fullname);
1333
if(ret == -1){
1334
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1335
strerror(errno));
1336
}
1337
free(fullname);
1338
}
1339
closedir(d);
1340
}
1341
ret = rmdir(tempdir);
1342
if(ret == -1 and errno != ENOENT){
1343
perror("rmdir");
1344
}
1345
}
1346
1347
return exitcode;
1094
1095
if(debug){
1096
fprintf(stderr, "%s exiting\n", argv[0]);
1097
}
1098
1099
/* Cleanup things */
1100
if(sb != NULL)
1101
avahi_s_service_browser_free(sb);
1102
1103
if(mc.server != NULL)
1104
avahi_server_free(mc.server);
1105
1106
if(mc.simple_poll != NULL)
1107
avahi_simple_poll_free(mc.simple_poll);
1108
1109
if(gnutls_initialized){
1110
gnutls_certificate_free_credentials(mc.cred);
1111
gnutls_global_deinit();
1112
gnutls_dh_params_deinit(mc.dh_params);
1113
}
1114
1115
if(gpgme_initialized){
1116
gpgme_release(mc.ctx);
1117
}
1118
1119
/* Removes the temp directory used by GPGME */
1120
if(tempdir[0] != '\0'){
1121
DIR *d;
1122
struct dirent *direntry;
1123
d = opendir(tempdir);
1124
if(d == NULL){
1125
if(errno != ENOENT){
1126
perror("opendir");
1127
}
1128
} else {
1129
while(true){
1130
direntry = readdir(d);
1131
if(direntry == NULL){
1132
break;
1133
}
1134
/* Skip "." and ".." */
1135
if(direntry->d_name[0] == '.'
1136
and (direntry->d_name[1] == '\0'
1137
or (direntry->d_name[1] == '.'
1138
and direntry->d_name[2] == '\0'))){
1139
continue;
1140
}
1141
char *fullname = NULL;
1142
ret = asprintf(&fullname, "%s/%s", tempdir,
1143
direntry->d_name);
1144
if(ret < 0){
1145
perror("asprintf");
1146
continue;
1147
}
1148
ret = remove(fullname);
1149
if(ret == -1){
1150
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1151
strerror(errno));
1152
}
1153
free(fullname);
1154
}
1155
closedir(d);
1156
}
1157
ret = rmdir(tempdir);
1158
if(ret == -1 and errno != ENOENT){
1159
perror("rmdir");
1160
}
1161
}
1162
1163
return exitcode;
1348
1164
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0