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- Committer: Teddy Hogeborn
- Date: 2009-09-19 17:41:18 UTC
- mto: (24.1.142 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20090919174118-274yt9wptmtx0ykn
* plugins.d/password-prompt.c (main): Fix "-Wconversion" warning.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008-2011 Teddy Hogeborn
13
* Copyright © 2008-2011 Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
14
14
*
15
15
* This program is free software: you can redistribute it and/or
16
16
* modify it under the terms of the GNU General Public License as
43
43
stdout, ferror(), remove() */
44
44
#include <stdint.h> /* uint16_t, uint32_t */
45
45
#include <stddef.h> /* NULL, size_t, ssize_t */
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
47
strtof(), abort() */
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
47
srand(), strtof(), abort() */
48
48
#include <stdbool.h> /* bool, false, true */
49
49
#include <string.h> /* memset(), strcmp(), strlen(),
50
50
strerror(), asprintf(), strcpy() */
62
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
63
63
strtoimax() */
64
64
#include <assert.h> /* assert() */
65
#include <errno.h> /* perror(), errno,
66
program_invocation_short_name */
67
#include <time.h> /* nanosleep(), time(), sleep() */
65
#include <errno.h> /* perror(), errno */
66
#include <time.h> /* nanosleep(), time() */
68
67
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
69
68
SIOCSIFFLAGS, if_indextoname(),
70
69
if_nametoindex(), IF_NAMESIZE */
74
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
75
74
getuid(), getgid(), seteuid(),
76
75
setgid(), pause() */
77
#include <arpa/inet.h> /* inet_pton(), htons, inet_ntop() */
76
#include <arpa/inet.h> /* inet_pton(), htons */
78
77
#include <iso646.h> /* not, or, and */
79
78
#include <argp.h> /* struct argp_option, error_t, struct
80
79
argp_state, struct argp,
83
82
#include <signal.h> /* sigemptyset(), sigaddset(),
84
83
sigaction(), SIGTERM, sig_atomic_t,
85
84
raise() */
86
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
87
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
88
85
89
86
#ifdef __linux__
90
87
#include <sys/klog.h> /* klogctl() */
128
125
static const char mandos_protocol_version[] = "1";
129
126
const char *argp_program_version = "mandos-client " VERSION;
130
127
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
131
static const char sys_class_net[] = "/sys/class/net";
132
char *connect_to = NULL;
133
134
/* Doubly linked list that need to be circularly linked when used */
135
typedef struct server{
136
const char *ip;
137
uint16_t port;
138
AvahiIfIndex if_index;
139
int af;
140
struct timespec last_seen;
141
struct server *next;
142
struct server *prev;
143
} server;
144
128
145
129
/* Used for passing in values through the Avahi callback functions */
146
130
typedef struct {
151
135
gnutls_dh_params_t dh_params;
152
136
const char *priority;
153
137
gpgme_ctx_t ctx;
154
server *current_server;
155
138
} mandos_context;
156
139
157
140
/* global context so signal handler can reach it*/
158
141
mandos_context mc = { .simple_poll = NULL, .server = NULL,
159
142
.dh_bits = 1024, .priority = "SECURE256"
160
":!CTYPE-X.509:+CTYPE-OPENPGP",
161
.current_server = NULL };
143
":!CTYPE-X.509:+CTYPE-OPENPGP" };
162
144
163
145
sig_atomic_t quit_now = 0;
164
146
int signal_received = 0;
165
147
166
/* Function to use when printing errors */
167
void perror_plus(const char *print_text){
168
fprintf(stderr, "Mandos plugin %s: ",
169
program_invocation_short_name);
170
perror(print_text);
171
}
172
173
148
/*
174
149
* Make additional room in "buffer" for at least BUFFER_SIZE more
175
150
* bytes. "buffer_capacity" is how much is currently allocated,
187
162
return buffer_capacity;
188
163
}
189
164
190
int add_server(const char *ip, uint16_t port,
191
AvahiIfIndex if_index,
192
int af){
193
int ret;
194
server *new_server = malloc(sizeof(server));
195
if(new_server == NULL){
196
perror_plus("malloc");
197
return -1;
198
}
199
*new_server = (server){ .ip = strdup(ip),
200
.port = port,
201
.if_index = if_index,
202
.af = af };
203
if(new_server->ip == NULL){
204
perror_plus("strdup");
205
return -1;
206
}
207
/* unique case of first server */
208
if (mc.current_server == NULL){
209
new_server->next = new_server;
210
new_server->prev = new_server;
211
mc.current_server = new_server;
212
/* Placing the new server last in the list */
213
} else {
214
new_server->next = mc.current_server;
215
new_server->prev = mc.current_server->prev;
216
new_server->prev->next = new_server;
217
mc.current_server->prev = new_server;
218
}
219
ret = clock_gettime(CLOCK_MONOTONIC, &mc.current_server->last_seen);
220
if(ret == -1){
221
perror_plus("clock_gettime");
222
return -1;
223
}
224
return 0;
225
}
226
227
165
/*
228
166
* Initialize GPGME.
229
167
*/
243
181
244
182
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
245
183
if(fd == -1){
246
perror_plus("open");
184
perror("open");
247
185
return false;
248
186
}
249
187
263
201
264
202
ret = (int)TEMP_FAILURE_RETRY(close(fd));
265
203
if(ret == -1){
266
perror_plus("close");
204
perror("close");
267
205
}
268
206
gpgme_data_release(pgp_data);
269
207
return true;
394
332
395
333
/* Seek back to the beginning of the GPGME plaintext data buffer */
396
334
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
397
perror_plus("gpgme_data_seek");
335
perror("gpgme_data_seek");
398
336
plaintext_length = -1;
399
337
goto decrypt_end;
400
338
}
405
343
(size_t)plaintext_length,
406
344
plaintext_capacity);
407
345
if(plaintext_capacity == 0){
408
perror_plus("incbuffer");
346
perror("incbuffer");
409
347
plaintext_length = -1;
410
348
goto decrypt_end;
411
349
}
418
356
break;
419
357
}
420
358
if(ret < 0){
421
perror_plus("gpgme_data_read");
359
perror("gpgme_data_read");
422
360
plaintext_length = -1;
423
361
goto decrypt_end;
424
362
}
481
419
}
482
420
483
421
/* OpenPGP credentials */
484
ret = gnutls_certificate_allocate_credentials(&mc.cred);
422
gnutls_certificate_allocate_credentials(&mc.cred);
485
423
if(ret != GNUTLS_E_SUCCESS){
486
fprintf(stderr, "GnuTLS memory error: %s\n",
424
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
425
from
426
-Wunreachable-code
427
*/
487
428
safer_gnutls_strerror(ret));
488
429
gnutls_global_deinit();
489
430
return -1;
611
552
gnutls_session_t session;
612
553
int pf; /* Protocol family */
613
554
614
errno = 0;
615
616
555
if(quit_now){
617
errno = EINTR;
618
556
return -1;
619
557
}
620
558
627
565
break;
628
566
default:
629
567
fprintf(stderr, "Bad address family: %d\n", af);
630
errno = EINVAL;
631
568
return -1;
632
569
}
633
570
643
580
644
581
tcp_sd = socket(pf, SOCK_STREAM, 0);
645
582
if(tcp_sd < 0){
646
int e = errno;
647
perror_plus("socket");
648
errno = e;
583
perror("socket");
649
584
goto mandos_end;
650
585
}
651
586
652
587
if(quit_now){
653
errno = EINTR;
654
588
goto mandos_end;
655
589
}
656
590
663
597
ret = inet_pton(af, ip, &to.in.sin_addr);
664
598
}
665
599
if(ret < 0 ){
666
int e = errno;
667
perror_plus("inet_pton");
668
errno = e;
600
perror("inet_pton");
669
601
goto mandos_end;
670
602
}
671
603
if(ret == 0){
672
int e = errno;
673
604
fprintf(stderr, "Bad address: %s\n", ip);
674
errno = e;
675
605
goto mandos_end;
676
606
}
677
607
if(af == AF_INET6){
685
615
if(if_index == AVAHI_IF_UNSPEC){
686
616
fprintf(stderr, "An IPv6 link-local address is incomplete"
687
617
" without a network interface\n");
688
errno = EINVAL;
689
618
goto mandos_end;
690
619
}
691
620
/* Set the network interface number as scope */
698
627
}
699
628
700
629
if(quit_now){
701
errno = EINTR;
702
630
goto mandos_end;
703
631
}
704
632
706
634
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
707
635
char interface[IF_NAMESIZE];
708
636
if(if_indextoname((unsigned int)if_index, interface) == NULL){
709
perror_plus("if_indextoname");
637
perror("if_indextoname");
710
638
} else {
711
639
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
712
640
ip, interface, port);
726
654
sizeof(addrstr));
727
655
}
728
656
if(pcret == NULL){
729
perror_plus("inet_ntop");
657
perror("inet_ntop");
730
658
} else {
731
659
if(strcmp(addrstr, ip) != 0){
732
660
fprintf(stderr, "Canonical address form: %s\n", addrstr);
735
663
}
736
664
737
665
if(quit_now){
738
errno = EINTR;
739
666
goto mandos_end;
740
667
}
741
668
745
672
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
746
673
}
747
674
if(ret < 0){
748
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
749
int e = errno;
750
perror_plus("connect");
751
errno = e;
752
}
675
perror("connect");
753
676
goto mandos_end;
754
677
}
755
678
756
679
if(quit_now){
757
errno = EINTR;
758
680
goto mandos_end;
759
681
}
760
682
765
687
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
766
688
out_size - written));
767
689
if(ret == -1){
768
int e = errno;
769
perror_plus("write");
770
errno = e;
690
perror("write");
771
691
goto mandos_end;
772
692
}
773
693
written += (size_t)ret;
783
703
}
784
704
785
705
if(quit_now){
786
errno = EINTR;
787
706
goto mandos_end;
788
707
}
789
708
}
793
712
}
794
713
795
714
if(quit_now){
796
errno = EINTR;
797
715
goto mandos_end;
798
716
}
799
717
800
/* Spurious warning from -Wint-to-pointer-cast */
801
718
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
802
719
803
720
if(quit_now){
804
errno = EINTR;
805
721
goto mandos_end;
806
722
}
807
723
808
724
do {
809
725
ret = gnutls_handshake(session);
810
726
if(quit_now){
811
errno = EINTR;
812
727
goto mandos_end;
813
728
}
814
729
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
818
733
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
819
734
gnutls_perror(ret);
820
735
}
821
errno = EPROTO;
822
736
goto mandos_end;
823
737
}
824
738
832
746
while(true){
833
747
834
748
if(quit_now){
835
errno = EINTR;
836
749
goto mandos_end;
837
750
}
838
751
839
752
buffer_capacity = incbuffer(&buffer, buffer_length,
840
753
buffer_capacity);
841
754
if(buffer_capacity == 0){
842
int e = errno;
843
perror_plus("incbuffer");
844
errno = e;
755
perror("incbuffer");
845
756
goto mandos_end;
846
757
}
847
758
848
759
if(quit_now){
849
errno = EINTR;
850
760
goto mandos_end;
851
761
}
852
762
865
775
ret = gnutls_handshake(session);
866
776
867
777
if(quit_now){
868
errno = EINTR;
869
778
goto mandos_end;
870
779
}
871
780
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
872
781
if(ret < 0){
873
782
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
874
783
gnutls_perror(ret);
875
errno = EPROTO;
876
784
goto mandos_end;
877
785
}
878
786
break;
880
788
fprintf(stderr, "Unknown error while reading data from"
881
789
" encrypted session with Mandos server\n");
882
790
gnutls_bye(session, GNUTLS_SHUT_RDWR);
883
errno = EIO;
884
791
goto mandos_end;
885
792
}
886
793
} else {
893
800
}
894
801
895
802
if(quit_now){
896
errno = EINTR;
897
803
goto mandos_end;
898
804
}
899
805
900
806
do {
901
807
ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
902
808
if(quit_now){
903
errno = EINTR;
904
809
goto mandos_end;
905
810
}
906
811
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
915
820
written = 0;
916
821
while(written < (size_t) decrypted_buffer_size){
917
822
if(quit_now){
918
errno = EINTR;
919
823
goto mandos_end;
920
824
}
921
825
923
827
(size_t)decrypted_buffer_size - written,
924
828
stdout);
925
829
if(ret == 0 and ferror(stdout)){
926
int e = errno;
927
830
if(debug){
928
831
fprintf(stderr, "Error writing encrypted data: %s\n",
929
832
strerror(errno));
930
833
}
931
errno = e;
932
834
goto mandos_end;
933
835
}
934
836
written += (size_t)ret;
940
842
/* Shutdown procedure */
941
843
942
844
mandos_end:
943
{
944
int e = errno;
945
free(decrypted_buffer);
946
free(buffer);
947
if(tcp_sd >= 0){
948
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
949
}
950
if(ret == -1){
951
if(e == 0){
952
e = errno;
953
}
954
perror_plus("close");
955
}
956
gnutls_deinit(session);
957
errno = e;
958
if(quit_now){
959
errno = EINTR;
960
retval = -1;
961
}
845
free(decrypted_buffer);
846
free(buffer);
847
if(tcp_sd >= 0){
848
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
849
}
850
if(ret == -1){
851
perror("close");
852
}
853
gnutls_deinit(session);
854
if(quit_now){
855
retval = -1;
962
856
}
963
857
return retval;
964
858
}
1007
901
avahi_proto_to_af(proto));
1008
902
if(ret == 0){
1009
903
avahi_simple_poll_quit(mc.simple_poll);
1010
} else {
1011
ret = add_server(ip, port, interface,
1012
avahi_proto_to_af(proto));
1013
904
}
1014
905
}
1015
906
}
1069
960
}
1070
961
}
1071
962
1072
/* Signal handler that stops main loop after SIGTERM */
963
/* stop main loop after sigterm has been called */
1073
964
static void handle_sigterm(int sig){
1074
965
if(quit_now){
1075
966
return;
1077
968
quit_now = 1;
1078
969
signal_received = sig;
1079
970
int old_errno = errno;
1080
/* set main loop to exit */
1081
971
if(mc.simple_poll != NULL){
1082
972
avahi_simple_poll_quit(mc.simple_poll);
1083
973
}
1084
974
errno = old_errno;
1085
975
}
1086
976
1087
/*
1088
* This function determines if a directory entry in /sys/class/net
1089
* corresponds to an acceptable network device.
1090
* (This function is passed to scandir(3) as a filter function.)
1091
*/
1092
int good_interface(const struct dirent *if_entry){
1093
ssize_t ssret;
1094
char *flagname = NULL;
1095
if(if_entry->d_name[0] == '.'){
1096
return 0;
1097
}
1098
int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,
1099
if_entry->d_name);
1100
if(ret < 0){
1101
perror_plus("asprintf");
1102
return 0;
1103
}
1104
int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));
1105
if(flags_fd == -1){
1106
perror_plus("open");
1107
free(flagname);
1108
return 0;
1109
}
1110
free(flagname);
1111
typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */
1112
/* read line from flags_fd */
1113
ssize_t to_read = 2+(sizeof(ifreq_flags)*2)+1; /* "0x1003\n" */
1114
char *flagstring = malloc((size_t)to_read+1); /* +1 for final \0 */
1115
flagstring[(size_t)to_read] = '\0';
1116
if(flagstring == NULL){
1117
perror_plus("malloc");
1118
close(flags_fd);
1119
return 0;
1120
}
1121
while(to_read > 0){
1122
ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,
1123
(size_t)to_read));
1124
if(ssret == -1){
1125
perror_plus("read");
1126
free(flagstring);
1127
close(flags_fd);
1128
return 0;
1129
}
1130
to_read -= ssret;
1131
if(ssret == 0){
1132
break;
1133
}
1134
}
1135
close(flags_fd);
1136
intmax_t tmpmax;
1137
char *tmp;
1138
errno = 0;
1139
tmpmax = strtoimax(flagstring, &tmp, 0);
1140
if(errno != 0 or tmp == flagstring or (*tmp != '\0'
1141
and not (isspace(*tmp)))
1142
or tmpmax != (ifreq_flags)tmpmax){
1143
if(debug){
1144
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1145
flagstring, if_entry->d_name);
1146
}
1147
free(flagstring);
1148
return 0;
1149
}
1150
free(flagstring);
1151
ifreq_flags flags = (ifreq_flags)tmpmax;
1152
/* Reject the loopback device */
1153
if(flags & IFF_LOOPBACK){
1154
if(debug){
1155
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1156
if_entry->d_name);
1157
}
1158
return 0;
1159
}
1160
/* Accept point-to-point devices only if connect_to is specified */
1161
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1162
if(debug){
1163
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1164
if_entry->d_name);
1165
}
1166
return 1;
1167
}
1168
/* Otherwise, reject non-broadcast-capable devices */
1169
if(not (flags & IFF_BROADCAST)){
1170
if(debug){
1171
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1172
if_entry->d_name);
1173
}
1174
return 0;
1175
}
1176
/* Reject non-ARP interfaces (including dummy interfaces) */
1177
if(flags & IFF_NOARP){
1178
if(debug){
1179
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1180
if_entry->d_name);
1181
}
1182
return 0;
1183
}
1184
/* Accept this device */
1185
if(debug){
1186
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1187
if_entry->d_name);
1188
}
1189
return 1;
1190
}
1191
1192
int notdotentries(const struct dirent *direntry){
1193
/* Skip "." and ".." */
1194
if(direntry->d_name[0] == '.'
1195
and (direntry->d_name[1] == '\0'
1196
or (direntry->d_name[1] == '.'
1197
and direntry->d_name[2] == '\0'))){
1198
return 0;
1199
}
1200
return 1;
1201
}
1202
1203
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1204
int ret;
1205
struct timespec now;
1206
struct timespec waited_time;
1207
intmax_t block_time;
1208
1209
while(true){
1210
if(mc.current_server == NULL){
1211
if (debug){
1212
fprintf(stderr,
1213
"Wait until first server is found. No timeout!\n");
1214
}
1215
ret = avahi_simple_poll_iterate(s, -1);
1216
} else {
1217
if (debug){
1218
fprintf(stderr, "Check current_server if we should run it,"
1219
" or wait\n");
1220
}
1221
/* the current time */
1222
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1223
if(ret == -1){
1224
perror_plus("clock_gettime");
1225
return -1;
1226
}
1227
/* Calculating in ms how long time between now and server
1228
who we visted longest time ago. Now - last seen. */
1229
waited_time.tv_sec = (now.tv_sec
1230
- mc.current_server->last_seen.tv_sec);
1231
waited_time.tv_nsec = (now.tv_nsec
1232
- mc.current_server->last_seen.tv_nsec);
1233
/* total time is 10s/10,000ms.
1234
Converting to s from ms by dividing by 1,000,
1235
and ns to ms by dividing by 1,000,000. */
1236
block_time = ((retry_interval
1237
- ((intmax_t)waited_time.tv_sec * 1000))
1238
- ((intmax_t)waited_time.tv_nsec / 1000000));
1239
1240
if (debug){
1241
fprintf(stderr, "Blocking for %ld ms\n", block_time);
1242
}
1243
1244
if(block_time <= 0){
1245
ret = start_mandos_communication(mc.current_server->ip,
1246
mc.current_server->port,
1247
mc.current_server->if_index,
1248
mc.current_server->af);
1249
if(ret == 0){
1250
avahi_simple_poll_quit(mc.simple_poll);
1251
return 0;
1252
}
1253
ret = clock_gettime(CLOCK_MONOTONIC,
1254
&mc.current_server->last_seen);
1255
if(ret == -1){
1256
perror_plus("clock_gettime");
1257
return -1;
1258
}
1259
mc.current_server = mc.current_server->next;
1260
block_time = 0; /* Call avahi to find new Mandos
1261
servers, but don't block */
1262
}
1263
1264
ret = avahi_simple_poll_iterate(s, (int)block_time);
1265
}
1266
if(ret != 0){
1267
if (ret > 0 or errno != EINTR) {
1268
return (ret != 1) ? ret : 0;
1269
}
1270
}
1271
}
1272
}
1273
1274
977
int main(int argc, char *argv[]){
1275
978
AvahiSServiceBrowser *sb = NULL;
1276
979
int error;
1278
981
intmax_t tmpmax;
1279
982
char *tmp;
1280
983
int exitcode = EXIT_SUCCESS;
1281
const char *interface = "";
984
const char *interface = "eth0";
1282
985
struct ifreq network;
1283
986
int sd = -1;
1284
987
bool take_down_interface = false;
1285
988
uid_t uid;
1286
989
gid_t gid;
990
char *connect_to = NULL;
1287
991
char tempdir[] = "/tmp/mandosXXXXXX";
1288
992
bool tempdir_created = false;
1289
993
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1293
997
bool gnutls_initialized = false;
1294
998
bool gpgme_initialized = false;
1295
999
float delay = 2.5f;
1296
double retry_interval = 10; /* 10s between trying a server and
1297
retrying the same server again */
1298
1000
1299
1001
struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
1300
1002
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
1306
1008
errno = 0;
1307
1009
ret = setgid(gid);
1308
1010
if(ret == -1){
1309
perror_plus("setgid");
1011
perror("setgid");
1310
1012
}
1311
1013
1312
1014
/* Lower user privileges (temporarily) */
1313
1015
errno = 0;
1314
1016
ret = seteuid(uid);
1315
1017
if(ret == -1){
1316
perror_plus("seteuid");
1018
perror("seteuid");
1317
1019
}
1318
1020
1319
1021
if(quit_now){
1354
1056
.arg = "SECONDS",
1355
1057
.doc = "Maximum delay to wait for interface startup",
1356
1058
.group = 2 },
1357
{ .name = "retry", .key = 132,
1358
.arg = "SECONDS",
1359
.doc = "Retry interval used when denied by the mandos server",
1360
.group = 2 },
1361
/*
1362
* These reproduce what we would get without ARGP_NO_HELP
1363
*/
1364
{ .name = "help", .key = '?',
1365
.doc = "Give this help list", .group = -1 },
1366
{ .name = "usage", .key = -3,
1367
.doc = "Give a short usage message", .group = -1 },
1368
{ .name = "version", .key = 'V',
1369
.doc = "Print program version", .group = -1 },
1370
1059
{ .name = NULL }
1371
1060
};
1372
1061
1373
1062
error_t parse_opt(int key, char *arg,
1374
1063
struct argp_state *state){
1375
errno = 0;
1376
1064
switch(key){
1377
1065
case 128: /* --debug */
1378
1066
debug = true;
1394
1082
tmpmax = strtoimax(arg, &tmp, 10);
1395
1083
if(errno != 0 or tmp == arg or *tmp != '\0'
1396
1084
or tmpmax != (typeof(mc.dh_bits))tmpmax){
1397
argp_error(state, "Bad number of DH bits");
1085
fprintf(stderr, "Bad number of DH bits\n");
1086
exit(EXIT_FAILURE);
1398
1087
}
1399
1088
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
1400
1089
break;
1405
1094
errno = 0;
1406
1095
delay = strtof(arg, &tmp);
1407
1096
if(errno != 0 or tmp == arg or *tmp != '\0'){
1408
argp_error(state, "Bad delay");
1409
}
1410
case 132: /* --retry */
1411
errno = 0;
1412
retry_interval = strtod(arg, &tmp);
1413
if(errno != 0 or tmp == arg or *tmp != '\0'
1414
or (retry_interval * 1000) > INT_MAX){
1415
argp_error(state, "Bad retry interval");
1097
fprintf(stderr, "Bad delay\n");
1098
exit(EXIT_FAILURE);
1416
1099
}
1417
1100
break;
1418
/*
1419
* These reproduce what we would get without ARGP_NO_HELP
1420
*/
1421
case '?': /* --help */
1422
argp_state_help(state, state->out_stream,
1423
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
1424
& ~(unsigned int)ARGP_HELP_EXIT_OK);
1425
case -3: /* --usage */
1426
argp_state_help(state, state->out_stream,
1427
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1428
case 'V': /* --version */
1429
fprintf(state->out_stream, "%s\n", argp_program_version);
1430
exit(argp_err_exit_status);
1101
case ARGP_KEY_ARG:
1102
argp_usage(state);
1103
case ARGP_KEY_END:
1431
1104
break;
1432
1105
default:
1433
1106
return ARGP_ERR_UNKNOWN;
1434
1107
}
1435
return errno;
1108
return 0;
1436
1109
}
1437
1110
1438
1111
struct argp argp = { .options = options, .parser = parse_opt,
1439
1112
.args_doc = "",
1440
1113
.doc = "Mandos client -- Get and decrypt"
1441
1114
" passwords from a Mandos server" };
1442
ret = argp_parse(&argp, argc, argv,
1443
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
1444
switch(ret){
1445
case 0:
1446
break;
1447
case ENOMEM:
1448
default:
1449
errno = ret;
1450
perror_plus("argp_parse");
1451
exitcode = EX_OSERR;
1452
goto end;
1453
case EINVAL:
1454
exitcode = EX_USAGE;
1455
goto end;
1456
}
1457
}
1458
1459
{
1460
/* Work around Debian bug #633582:
1461
<http://bugs.debian.org/633582> */
1462
struct stat st;
1463
1464
/* Re-raise priviliges */
1465
errno = 0;
1466
ret = seteuid(0);
1467
if(ret == -1){
1468
perror_plus("seteuid");
1469
}
1470
1471
int seckey_fd = open(PATHDIR "/" SECKEY, O_RDONLY);
1472
if(seckey_fd == -1){
1473
perror_plus("open");
1474
} else {
1475
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1476
if(ret == -1){
1477
perror_plus("fstat");
1478
} else {
1479
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1480
ret = fchown(seckey_fd, uid, gid);
1481
if(ret == -1){
1482
perror_plus("fchown");
1483
}
1484
}
1485
}
1486
TEMP_FAILURE_RETRY(close(seckey_fd));
1487
}
1488
1489
int pubkey_fd = open(PATHDIR "/" PUBKEY, O_RDONLY);
1490
if(pubkey_fd == -1){
1491
perror_plus("open");
1492
} else {
1493
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1494
if(ret == -1){
1495
perror_plus("fstat");
1496
} else {
1497
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1498
ret = fchown(pubkey_fd, uid, gid);
1499
if(ret == -1){
1500
perror_plus("fchown");
1501
}
1502
}
1503
}
1504
TEMP_FAILURE_RETRY(close(pubkey_fd));
1505
}
1506
1507
/* Lower privileges */
1508
errno = 0;
1509
ret = seteuid(uid);
1510
if(ret == -1){
1511
perror_plus("seteuid");
1115
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1116
if(ret == ARGP_ERR_UNKNOWN){
1117
fprintf(stderr, "Unknown error while parsing arguments\n");
1118
exitcode = EXIT_FAILURE;
1119
goto end;
1512
1120
}
1513
1121
}
1514
1122
1515
1123
if(not debug){
1516
1124
avahi_set_log_function(empty_log);
1517
1125
}
1518
1519
if(interface[0] == '\0'){
1520
struct dirent **direntries;
1521
ret = scandir(sys_class_net, &direntries, good_interface,
1522
alphasort);
1523
if(ret >= 1){
1524
/* Pick the first good interface */
1525
interface = strdup(direntries[0]->d_name);
1526
if(debug){
1527
fprintf(stderr, "Using interface \"%s\"\n", interface);
1528
}
1529
if(interface == NULL){
1530
perror_plus("malloc");
1531
free(direntries);
1532
exitcode = EXIT_FAILURE;
1533
goto end;
1534
}
1535
free(direntries);
1536
} else {
1537
free(direntries);
1538
fprintf(stderr, "Could not find a network interface\n");
1539
exitcode = EXIT_FAILURE;
1540
goto end;
1541
}
1542
}
1543
1126
1544
1127
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1545
1128
from the signal handler */
1548
1131
mc.simple_poll = avahi_simple_poll_new();
1549
1132
if(mc.simple_poll == NULL){
1550
1133
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1551
exitcode = EX_UNAVAILABLE;
1134
exitcode = EXIT_FAILURE;
1552
1135
goto end;
1553
1136
}
1554
1137
1555
1138
sigemptyset(&sigterm_action.sa_mask);
1556
1139
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1557
1140
if(ret == -1){
1558
perror_plus("sigaddset");
1559
exitcode = EX_OSERR;
1141
perror("sigaddset");
1142
exitcode = EXIT_FAILURE;
1560
1143
goto end;
1561
1144
}
1562
1145
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1563
1146
if(ret == -1){
1564
perror_plus("sigaddset");
1565
exitcode = EX_OSERR;
1147
perror("sigaddset");
1148
exitcode = EXIT_FAILURE;
1566
1149
goto end;
1567
1150
}
1568
1151
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1569
1152
if(ret == -1){
1570
perror_plus("sigaddset");
1571
exitcode = EX_OSERR;
1153
perror("sigaddset");
1154
exitcode = EXIT_FAILURE;
1572
1155
goto end;
1573
1156
}
1574
1157
/* Need to check if the handler is SIG_IGN before handling:
1577
1160
*/
1578
1161
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1579
1162
if(ret == -1){
1580
perror_plus("sigaction");
1581
return EX_OSERR;
1163
perror("sigaction");
1164
return EXIT_FAILURE;
1582
1165
}
1583
1166
if(old_sigterm_action.sa_handler != SIG_IGN){
1584
1167
ret = sigaction(SIGINT, &sigterm_action, NULL);
1585
1168
if(ret == -1){
1586
perror_plus("sigaction");
1587
exitcode = EX_OSERR;
1169
perror("sigaction");
1170
exitcode = EXIT_FAILURE;
1588
1171
goto end;
1589
1172
}
1590
1173
}
1591
1174
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1592
1175
if(ret == -1){
1593
perror_plus("sigaction");
1594
return EX_OSERR;
1176
perror("sigaction");
1177
return EXIT_FAILURE;
1595
1178
}
1596
1179
if(old_sigterm_action.sa_handler != SIG_IGN){
1597
1180
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1598
1181
if(ret == -1){
1599
perror_plus("sigaction");
1600
exitcode = EX_OSERR;
1182
perror("sigaction");
1183
exitcode = EXIT_FAILURE;
1601
1184
goto end;
1602
1185
}
1603
1186
}
1604
1187
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1605
1188
if(ret == -1){
1606
perror_plus("sigaction");
1607
return EX_OSERR;
1189
perror("sigaction");
1190
return EXIT_FAILURE;
1608
1191
}
1609
1192
if(old_sigterm_action.sa_handler != SIG_IGN){
1610
1193
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1611
1194
if(ret == -1){
1612
perror_plus("sigaction");
1613
exitcode = EX_OSERR;
1195
perror("sigaction");
1196
exitcode = EXIT_FAILURE;
1614
1197
goto end;
1615
1198
}
1616
1199
}
1617
1200
1618
1201
/* If the interface is down, bring it up */
1619
if(strcmp(interface, "none") != 0){
1202
if(interface[0] != '\0'){
1620
1203
if_index = (AvahiIfIndex) if_nametoindex(interface);
1621
1204
if(if_index == 0){
1622
1205
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1623
exitcode = EX_UNAVAILABLE;
1206
exitcode = EXIT_FAILURE;
1624
1207
goto end;
1625
1208
}
1626
1209
1632
1215
errno = 0;
1633
1216
ret = seteuid(0);
1634
1217
if(ret == -1){
1635
perror_plus("seteuid");
1218
perror("seteuid");
1636
1219
}
1637
1220
1638
1221
#ifdef __linux__
1639
1222
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1640
messages about the network interface to mess up the prompt */
1223
messages to mess up the prompt */
1641
1224
ret = klogctl(8, NULL, 5);
1642
1225
bool restore_loglevel = true;
1643
1226
if(ret == -1){
1644
1227
restore_loglevel = false;
1645
perror_plus("klogctl");
1228
perror("klogctl");
1646
1229
}
1647
1230
#endif /* __linux__ */
1648
1231
1649
1232
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1650
1233
if(sd < 0){
1651
perror_plus("socket");
1652
exitcode = EX_OSERR;
1234
perror("socket");
1235
exitcode = EXIT_FAILURE;
1653
1236
#ifdef __linux__
1654
1237
if(restore_loglevel){
1655
1238
ret = klogctl(7, NULL, 0);
1656
1239
if(ret == -1){
1657
perror_plus("klogctl");
1240
perror("klogctl");
1658
1241
}
1659
1242
}
1660
1243
#endif /* __linux__ */
1662
1245
errno = 0;
1663
1246
ret = seteuid(uid);
1664
1247
if(ret == -1){
1665
perror_plus("seteuid");
1248
perror("seteuid");
1666
1249
}
1667
1250
goto end;
1668
1251
}
1669
1252
strcpy(network.ifr_name, interface);
1670
1253
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1671
1254
if(ret == -1){
1672
perror_plus("ioctl SIOCGIFFLAGS");
1255
perror("ioctl SIOCGIFFLAGS");
1673
1256
#ifdef __linux__
1674
1257
if(restore_loglevel){
1675
1258
ret = klogctl(7, NULL, 0);
1676
1259
if(ret == -1){
1677
perror_plus("klogctl");
1260
perror("klogctl");
1678
1261
}
1679
1262
}
1680
1263
#endif /* __linux__ */
1681
exitcode = EX_OSERR;
1264
exitcode = EXIT_FAILURE;
1682
1265
/* Lower privileges */
1683
1266
errno = 0;
1684
1267
ret = seteuid(uid);
1685
1268
if(ret == -1){
1686
perror_plus("seteuid");
1269
perror("seteuid");
1687
1270
}
1688
1271
goto end;
1689
1272
}
1693
1276
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1694
1277
if(ret == -1){
1695
1278
take_down_interface = false;
1696
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1697
exitcode = EX_OSERR;
1279
perror("ioctl SIOCSIFFLAGS");
1280
exitcode = EXIT_FAILURE;
1698
1281
#ifdef __linux__
1699
1282
if(restore_loglevel){
1700
1283
ret = klogctl(7, NULL, 0);
1701
1284
if(ret == -1){
1702
perror_plus("klogctl");
1285
perror("klogctl");
1703
1286
}
1704
1287
}
1705
1288
#endif /* __linux__ */
1707
1290
errno = 0;
1708
1291
ret = seteuid(uid);
1709
1292
if(ret == -1){
1710
perror_plus("seteuid");
1293
perror("seteuid");
1711
1294
}
1712
1295
goto end;
1713
1296
}
1714
1297
}
1715
/* Sleep checking until interface is running.
1716
Check every 0.25s, up to total time of delay */
1298
/* sleep checking until interface is running */
1717
1299
for(int i=0; i < delay * 4; i++){
1718
1300
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1719
1301
if(ret == -1){
1720
perror_plus("ioctl SIOCGIFFLAGS");
1302
perror("ioctl SIOCGIFFLAGS");
1721
1303
} else if(network.ifr_flags & IFF_RUNNING){
1722
1304
break;
1723
1305
}
1724
1306
struct timespec sleeptime = { .tv_nsec = 250000000 };
1725
1307
ret = nanosleep(&sleeptime, NULL);
1726
1308
if(ret == -1 and errno != EINTR){
1727
perror_plus("nanosleep");
1309
perror("nanosleep");
1728
1310
}
1729
1311
}
1730
1312
if(not take_down_interface){
1731
1313
/* We won't need the socket anymore */
1732
1314
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1733
1315
if(ret == -1){
1734
perror_plus("close");
1316
perror("close");
1735
1317
}
1736
1318
}
1737
1319
#ifdef __linux__
1739
1321
/* Restores kernel loglevel to default */
1740
1322
ret = klogctl(7, NULL, 0);
1741
1323
if(ret == -1){
1742
perror_plus("klogctl");
1324
perror("klogctl");
1743
1325
}
1744
1326
}
1745
1327
#endif /* __linux__ */
1749
1331
/* Lower privileges */
1750
1332
ret = seteuid(uid);
1751
1333
if(ret == -1){
1752
perror_plus("seteuid");
1334
perror("seteuid");
1753
1335
}
1754
1336
} else {
1755
1337
/* Lower privileges permanently */
1756
1338
ret = setuid(uid);
1757
1339
if(ret == -1){
1758
perror_plus("setuid");
1340
perror("setuid");
1759
1341
}
1760
1342
}
1761
1343
}
1767
1349
ret = init_gnutls_global(pubkey, seckey);
1768
1350
if(ret == -1){
1769
1351
fprintf(stderr, "init_gnutls_global failed\n");
1770
exitcode = EX_UNAVAILABLE;
1352
exitcode = EXIT_FAILURE;
1771
1353
goto end;
1772
1354
} else {
1773
1355
gnutls_initialized = true;
1777
1359
goto end;
1778
1360
}
1779
1361
1362
tempdir_created = true;
1780
1363
if(mkdtemp(tempdir) == NULL){
1781
perror_plus("mkdtemp");
1364
tempdir_created = false;
1365
perror("mkdtemp");
1782
1366
goto end;
1783
1367
}
1784
tempdir_created = true;
1785
1368
1786
1369
if(quit_now){
1787
1370
goto end;
1789
1372
1790
1373
if(not init_gpgme(pubkey, seckey, tempdir)){
1791
1374
fprintf(stderr, "init_gpgme failed\n");
1792
exitcode = EX_UNAVAILABLE;
1375
exitcode = EXIT_FAILURE;
1793
1376
goto end;
1794
1377
} else {
1795
1378
gpgme_initialized = true;
1805
1388
char *address = strrchr(connect_to, ':');
1806
1389
if(address == NULL){
1807
1390
fprintf(stderr, "No colon in address\n");
1808
exitcode = EX_USAGE;
1391
exitcode = EXIT_FAILURE;
1809
1392
goto end;
1810
1393
}
1811
1394
1819
1402
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1820
1403
or tmpmax != (uint16_t)tmpmax){
1821
1404
fprintf(stderr, "Bad port number\n");
1822
exitcode = EX_USAGE;
1405
exitcode = EXIT_FAILURE;
1823
1406
goto end;
1824
1407
}
1825
1408
1841
1424
if(quit_now){
1842
1425
goto end;
1843
1426
}
1844
1845
while(not quit_now){
1846
ret = start_mandos_communication(address, port, if_index, af);
1847
if(quit_now or ret == 0){
1848
break;
1849
}
1850
sleep((int)retry_interval or 1);
1851
};
1852
1853
if (not quit_now){
1427
1428
ret = start_mandos_communication(address, port, if_index, af);
1429
if(ret < 0){
1430
exitcode = EXIT_FAILURE;
1431
} else {
1854
1432
exitcode = EXIT_SUCCESS;
1855
1433
}
1856
1857
1434
goto end;
1858
1435
}
1859
1436
1883
1460
if(mc.server == NULL){
1884
1461
fprintf(stderr, "Failed to create Avahi server: %s\n",
1885
1462
avahi_strerror(error));
1886
exitcode = EX_UNAVAILABLE;
1463
exitcode = EXIT_FAILURE;
1887
1464
goto end;
1888
1465
}
1889
1466
1898
1475
if(sb == NULL){
1899
1476
fprintf(stderr, "Failed to create service browser: %s\n",
1900
1477
avahi_strerror(avahi_server_errno(mc.server)));
1901
exitcode = EX_UNAVAILABLE;
1478
exitcode = EXIT_FAILURE;
1902
1479
goto end;
1903
1480
}
1904
1481
1911
1488
if(debug){
1912
1489
fprintf(stderr, "Starting Avahi loop search\n");
1913
1490
}
1914
1915
ret = avahi_loop_with_timeout(mc.simple_poll,
1916
(int)(retry_interval * 1000));
1917
if(debug){
1918
fprintf(stderr, "avahi_loop_with_timeout exited %s\n",
1919
(ret == 0) ? "successfully" : "with error");
1920
}
1491
1492
avahi_simple_poll_loop(mc.simple_poll);
1921
1493
1922
1494
end:
1923
1495
1944
1516
if(gpgme_initialized){
1945
1517
gpgme_release(mc.ctx);
1946
1518
}
1947
1948
/* Cleans up the circular linked list of Mandos servers the client
1949
has seen */
1950
if(mc.current_server != NULL){
1951
mc.current_server->prev->next = NULL;
1952
while(mc.current_server != NULL){
1953
server *next = mc.current_server->next;
1954
free(mc.current_server);
1955
mc.current_server = next;
1956
}
1957
}
1958
1519
1959
1520
/* Take down the network interface */
1960
1521
if(take_down_interface){
1962
1523
errno = 0;
1963
1524
ret = seteuid(0);
1964
1525
if(ret == -1){
1965
perror_plus("seteuid");
1526
perror("seteuid");
1966
1527
}
1967
1528
if(geteuid() == 0){
1968
1529
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1969
1530
if(ret == -1){
1970
perror_plus("ioctl SIOCGIFFLAGS");
1531
perror("ioctl SIOCGIFFLAGS");
1971
1532
} else if(network.ifr_flags & IFF_UP) {
1972
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1533
network.ifr_flags &= ~IFF_UP; /* clear flag */
1973
1534
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1974
1535
if(ret == -1){
1975
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1536
perror("ioctl SIOCSIFFLAGS");
1976
1537
}
1977
1538
}
1978
1539
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1979
1540
if(ret == -1){
1980
perror_plus("close");
1541
perror("close");
1981
1542
}
1982
1543
/* Lower privileges permanently */
1983
1544
errno = 0;
1984
1545
ret = setuid(uid);
1985
1546
if(ret == -1){
1986
perror_plus("setuid");
1547
perror("setuid");
1987
1548
}
1988
1549
}
1989
1550
}
1990
1551
1991
/* Removes the GPGME temp directory and all files inside */
1552
/* Removes the temp directory used by GPGME */
1992
1553
if(tempdir_created){
1993
struct dirent **direntries = NULL;
1994
struct dirent *direntry = NULL;
1995
ret = scandir(tempdir, &direntries, notdotentries, alphasort);
1996
if (ret > 0){
1997
for(int i = 0; i < ret; i++){
1998
direntry = direntries[i];
1554
DIR *d;
1555
struct dirent *direntry;
1556
d = opendir(tempdir);
1557
if(d == NULL){
1558
if(errno != ENOENT){
1559
perror("opendir");
1560
}
1561
} else {
1562
while(true){
1563
direntry = readdir(d);
1564
if(direntry == NULL){
1565
break;
1566
}
1567
/* Skip "." and ".." */
1568
if(direntry->d_name[0] == '.'
1569
and (direntry->d_name[1] == '\0'
1570
or (direntry->d_name[1] == '.'
1571
and direntry->d_name[2] == '\0'))){
1572
continue;
1573
}
1999
1574
char *fullname = NULL;
2000
1575
ret = asprintf(&fullname, "%s/%s", tempdir,
2001
1576
direntry->d_name);
2002
1577
if(ret < 0){
2003
perror_plus("asprintf");
1578
perror("asprintf");
2004
1579
continue;
2005
1580
}
2006
1581
ret = remove(fullname);
2010
1585
}
2011
1586
free(fullname);
2012
1587
}
2013
}
2014
2015
/* need to be cleaned even if ret == 0 because man page doesn't
2016
specify */
2017
free(direntries);
2018
if (ret == -1){
2019
perror_plus("scandir");
1588
closedir(d);
2020
1589
}
2021
1590
ret = rmdir(tempdir);
2022
1591
if(ret == -1 and errno != ENOENT){
2023
perror_plus("rmdir");
1592
perror("rmdir");
2024
1593
}
2025
1594
}
2026
1595
2031
1600
&old_sigterm_action,
2032
1601
NULL));
2033
1602
if(ret == -1){
2034
perror_plus("sigaction");
1603
perror("sigaction");
2035
1604
}
2036
1605
do {
2037
1606
ret = raise(signal_received);
2038
1607
} while(ret != 0 and errno == EINTR);
2039
1608
if(ret != 0){
2040
perror_plus("raise");
1609
perror("raise");
2041
1610
abort();
2042
1611
}
2043
1612
TEMP_FAILURE_RETRY(pause());
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0