9
9
* "browse_callback", and parts of "main".
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2008-2011 Teddy Hogeborn
13
* Copyright © 2008-2011 Björn Påhlsson
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
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
33
#ifndef _LARGEFILE_SOURCE
33
34
#define _LARGEFILE_SOURCE
36
#ifndef _FILE_OFFSET_BITS
34
37
#define _FILE_OFFSET_BITS 64
36
40
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
39
43
stdout, ferror(), remove() */
40
44
#include <stdint.h> /* uint16_t, uint32_t */
41
45
#include <stddef.h> /* NULL, size_t, ssize_t */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
44
48
#include <stdbool.h> /* bool, false, true */
45
49
#include <string.h> /* memset(), strcmp(), strlen(),
46
50
strerror(), asprintf(), strcpy() */
60
64
#include <assert.h> /* assert() */
61
65
#include <errno.h> /* perror(), errno */
62
#include <time.h> /* nanosleep(), time() */
66
#include <time.h> /* nanosleep(), time(), sleep() */
63
67
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
68
SIOCSIFFLAGS, if_indextoname(),
65
69
if_nametoindex(), IF_NAMESIZE */
67
71
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
69
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
74
getuid(), getgid(), seteuid(),
72
76
#include <arpa/inet.h> /* inet_pton(), htons */
73
77
#include <iso646.h> /* not, or, and */
74
78
#include <argp.h> /* struct argp_option, error_t, struct
76
80
argp_parse(), ARGP_KEY_ARG,
77
81
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
82
#include <signal.h> /* sigemptyset(), sigaddset(),
79
sigaction(), SIGTERM, sigaction,
83
sigaction(), SIGTERM, sig_atomic_t,
85
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
86
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
83
89
#include <sys/klog.h> /* klogctl() */
306
317
gpgme_recipient_t recipient;
307
318
recipient = result->recipients;
309
while(recipient != NULL){
310
fprintf(stderr, "Public key algorithm: %s\n",
311
gpgme_pubkey_algo_name(recipient->pubkey_algo));
312
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
313
fprintf(stderr, "Secret key available: %s\n",
314
recipient->status == GPG_ERR_NO_SECKEY
316
recipient = recipient->next;
319
while(recipient != NULL){
320
fprintf(stderr, "Public key algorithm: %s\n",
321
gpgme_pubkey_algo_name(recipient->pubkey_algo));
322
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
323
fprintf(stderr, "Secret key available: %s\n",
324
recipient->status == GPG_ERR_NO_SECKEY
326
recipient = recipient->next;
472
481
static int init_gnutls_session(gnutls_session_t *session){
474
483
/* GnuTLS session creation */
475
ret = gnutls_init(session, GNUTLS_SERVER);
485
ret = gnutls_init(session, GNUTLS_SERVER);
489
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
476
490
if(ret != GNUTLS_E_SUCCESS){
477
491
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
478
492
safer_gnutls_strerror(ret));
483
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
498
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
500
gnutls_deinit(*session);
503
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
484
504
if(ret != GNUTLS_E_SUCCESS){
485
505
fprintf(stderr, "Syntax error at: %s\n", err);
486
506
fprintf(stderr, "GnuTLS error: %s\n",
493
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
514
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
517
gnutls_deinit(*session);
520
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
495
521
if(ret != GNUTLS_E_SUCCESS){
496
522
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
497
523
safer_gnutls_strerror(ret));
516
541
static int start_mandos_communication(const char *ip, uint16_t port,
517
542
AvahiIfIndex if_index,
544
int ret, tcp_sd = -1;
522
547
struct sockaddr_in in;
523
548
struct sockaddr_in6 in6;
525
550
char *buffer = NULL;
526
char *decrypted_buffer;
551
char *decrypted_buffer = NULL;
527
552
size_t buffer_length = 0;
528
553
size_t buffer_capacity = 0;
529
ssize_t decrypted_buffer_size;
532
556
gnutls_session_t session;
533
557
int pf; /* Protocol family */
557
589
tcp_sd = socket(pf, SOCK_STREAM, 0);
559
592
perror("socket");
563
602
memset(&to, 0, sizeof(to));
564
603
if(af == AF_INET6){
565
to.in6.sin6_family = (uint16_t)af;
604
to.in6.sin6_family = (sa_family_t)af;
566
605
ret = inet_pton(af, ip, &to.in6.sin6_addr);
567
606
} else { /* IPv4 */
568
607
to.in.sin_family = (sa_family_t)af;
569
608
ret = inet_pton(af, ip, &to.in.sin_addr);
572
612
perror("inet_pton");
576
618
fprintf(stderr, "Bad address: %s\n", ip);
579
622
if(af == AF_INET6){
580
623
to.in6.sin6_port = htons(port); /* Spurious warnings from
668
737
fprintf(stderr, "Establishing TLS session with %s\n", ip);
745
/* Spurious warnings from -Wint-to-pointer-cast */
671
746
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
674
754
ret = gnutls_handshake(session);
675
759
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
677
761
if(ret != GNUTLS_E_SUCCESS){
710
806
case GNUTLS_E_AGAIN:
712
808
case GNUTLS_E_REHANDSHAKE:
714
810
ret = gnutls_handshake(session);
715
816
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
717
818
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
718
819
gnutls_perror(ret);
724
825
fprintf(stderr, "Unknown error while reading data from"
725
826
" encrypted session with Mandos server\n");
727
827
gnutls_bye(session, GNUTLS_SHUT_RDWR);
736
837
fprintf(stderr, "Closing TLS session\n");
739
gnutls_bye(session, GNUTLS_SHUT_RDWR);
846
ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
851
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
741
853
if(buffer_length > 0){
854
ssize_t decrypted_buffer_size;
742
855
decrypted_buffer_size = pgp_packet_decrypt(buffer,
744
857
&decrypted_buffer);
745
858
if(decrypted_buffer_size >= 0){
747
861
while(written < (size_t) decrypted_buffer_size){
748
867
ret = (int)fwrite(decrypted_buffer + written, 1,
749
868
(size_t)decrypted_buffer_size - written,
751
870
if(ret == 0 and ferror(stdout)){
753
873
fprintf(stderr, "Error writing encrypted data: %s\n",
754
874
strerror(errno));
759
879
written += (size_t)ret;
761
free(decrypted_buffer);
769
885
/* Shutdown procedure */
773
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
890
free(decrypted_buffer);
893
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
901
gnutls_deinit(session);
777
gnutls_deinit(session);
854
992
the callback function is called the Avahi server will free the
855
993
resolver for us. */
857
if(!(avahi_s_service_resolver_new(mc.server, interface,
858
protocol, name, type, domain,
859
AVAHI_PROTO_INET6, 0,
860
resolve_callback, NULL)))
995
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
996
name, type, domain, protocol, 0,
997
resolve_callback, NULL) == NULL)
861
998
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
862
999
name, avahi_strerror(avahi_server_errno(mc.server)));
889
1025
errno = old_errno;
1029
* This function determines if a directory entry in /sys/class/net
1030
* corresponds to an acceptable network device.
1031
* (This function is passed to scandir(3) as a filter function.)
1033
int good_interface(const struct dirent *if_entry){
1035
char *flagname = NULL;
1036
if(if_entry->d_name[0] == '.'){
1039
int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,
1045
int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));
1052
typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */
1053
/* read line from flags_fd */
1054
ssize_t to_read = (sizeof(ifreq_flags)*2)+3; /* "0x1003\n" */
1055
char *flagstring = malloc((size_t)to_read+1); /* +1 for final \0 */
1056
flagstring[(size_t)to_read] = '\0';
1057
if(flagstring == NULL){
1063
ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,
1080
tmpmax = strtoimax(flagstring, &tmp, 0);
1081
if(errno != 0 or tmp == flagstring or (*tmp != '\0'
1082
and not (isspace(*tmp)))
1083
or tmpmax != (ifreq_flags)tmpmax){
1085
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1086
flagstring, if_entry->d_name);
1092
ifreq_flags flags = (ifreq_flags)tmpmax;
1093
/* Reject the loopback device */
1094
if(flags & IFF_LOOPBACK){
1096
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1101
/* Accept point-to-point devices only if connect_to is specified */
1102
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1104
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1109
/* Otherwise, reject non-broadcast-capable devices */
1110
if(not (flags & IFF_BROADCAST)){
1112
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1117
/* Reject non-ARP interfaces (including dummy interfaces) */
1118
if(flags & IFF_NOARP){
1120
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1125
/* Accept this device */
1127
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1133
int notdotentries(const struct dirent *direntry){
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'))){
892
1144
int main(int argc, char *argv[]){
893
1145
AvahiSServiceBrowser *sb = NULL;
896
1148
intmax_t tmpmax;
898
1150
int exitcode = EXIT_SUCCESS;
899
const char *interface = "eth0";
1151
const char *interface = "";
900
1152
struct ifreq network;
1154
bool take_down_interface = false;
904
char *connect_to = NULL;
905
1157
char tempdir[] = "/tmp/mandosXXXXXX";
906
1158
bool tempdir_created = false;
907
1159
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
908
1160
const char *seckey = PATHDIR "/" SECKEY;
909
1161
const char *pubkey = PATHDIR "/" PUBKEY;
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
1163
bool gnutls_initialized = false;
916
1164
bool gpgme_initialized = false;
917
1165
float delay = 2.5f;
919
struct sigaction old_sigterm_action;
1167
struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
920
1168
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
1173
/* Lower any group privileges we might have, just to be safe */
1180
/* Lower user privileges (temporarily) */
923
1192
struct argp_option options[] = {
924
1193
{ .name = "debug", .key = 128,
953
1222
.arg = "SECONDS",
954
1223
.doc = "Maximum delay to wait for interface startup",
1226
* These reproduce what we would get without ARGP_NO_HELP
1228
{ .name = "help", .key = '?',
1229
.doc = "Give this help list", .group = -1 },
1230
{ .name = "usage", .key = -3,
1231
.doc = "Give a short usage message", .group = -1 },
1232
{ .name = "version", .key = 'V',
1233
.doc = "Print program version", .group = -1 },
956
1234
{ .name = NULL }
959
1237
error_t parse_opt(int key, char *arg,
960
1238
struct argp_state *state){
962
1241
case 128: /* --debug */
979
1258
tmpmax = strtoimax(arg, &tmp, 10);
980
1259
if(errno != 0 or tmp == arg or *tmp != '\0'
981
1260
or tmpmax != (typeof(mc.dh_bits))tmpmax){
982
fprintf(stderr, "Bad number of DH bits\n");
1261
argp_error(state, "Bad number of DH bits");
985
1263
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
992
1270
delay = strtof(arg, &tmp);
993
1271
if(errno != 0 or tmp == arg or *tmp != '\0'){
994
fprintf(stderr, "Bad delay\n");
1272
argp_error(state, "Bad delay");
1276
* These reproduce what we would get without ARGP_NO_HELP
1278
case '?': /* --help */
1279
argp_state_help(state, state->out_stream,
1280
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
1281
& ~(unsigned int)ARGP_HELP_EXIT_OK);
1282
case -3: /* --usage */
1283
argp_state_help(state, state->out_stream,
1284
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1285
case 'V': /* --version */
1286
fprintf(state->out_stream, "%s\n", argp_program_version);
1287
exit(argp_err_exit_status);
1003
1290
return ARGP_ERR_UNKNOWN;
1008
1295
struct argp argp = { .options = options, .parser = parse_opt,
1009
1296
.args_doc = "",
1010
1297
.doc = "Mandos client -- Get and decrypt"
1011
1298
" 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;
1299
ret = argp_parse(&argp, argc, argv,
1300
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
1307
perror("argp_parse");
1308
exitcode = EX_OSERR;
1311
exitcode = EX_USAGE;
1021
1317
avahi_set_log_function(empty_log);
1320
if(interface[0] == '\0'){
1321
struct dirent **direntries;
1322
ret = scandir(sys_class_net, &direntries, good_interface,
1325
/* Pick the first good interface */
1326
interface = strdup(direntries[0]->d_name);
1328
fprintf(stderr, "Using interface \"%s\"\n", interface);
1330
if(interface == NULL){
1333
exitcode = EXIT_FAILURE;
1339
fprintf(stderr, "Could not find a network interface\n");
1340
exitcode = EXIT_FAILURE;
1024
1345
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1025
1346
from the signal handler */
1036
1357
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1038
1359
perror("sigaddset");
1039
exitcode = EXIT_FAILURE;
1360
exitcode = EX_OSERR;
1042
1363
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1044
1365
perror("sigaddset");
1045
exitcode = EXIT_FAILURE;
1366
exitcode = EX_OSERR;
1048
1369
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1050
1371
perror("sigaddset");
1051
exitcode = EXIT_FAILURE;
1054
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1056
perror("sigaction");
1057
exitcode = EXIT_FAILURE;
1372
exitcode = EX_OSERR;
1375
/* Need to check if the handler is SIG_IGN before handling:
1376
| [[info:libc:Initial Signal Actions]] |
1377
| [[info:libc:Basic Signal Handling]] |
1379
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1381
perror("sigaction");
1384
if(old_sigterm_action.sa_handler != SIG_IGN){
1385
ret = sigaction(SIGINT, &sigterm_action, NULL);
1387
perror("sigaction");
1388
exitcode = EX_OSERR;
1392
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1394
perror("sigaction");
1397
if(old_sigterm_action.sa_handler != SIG_IGN){
1398
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1400
perror("sigaction");
1401
exitcode = EX_OSERR;
1405
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1407
perror("sigaction");
1410
if(old_sigterm_action.sa_handler != SIG_IGN){
1411
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1413
perror("sigaction");
1414
exitcode = EX_OSERR;
1061
1419
/* If the interface is down, bring it up */
1062
if(interface[0] != '\0'){
1420
if(strcmp(interface, "none") != 0){
1421
if_index = (AvahiIfIndex) if_nametoindex(interface);
1423
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1424
exitcode = EX_UNAVAILABLE;
1432
/* Re-raise priviliges */
1063
1439
#ifdef __linux__
1064
1440
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1065
messages to mess up the prompt */
1441
messages about the network interface to mess up the prompt */
1066
1442
ret = klogctl(8, NULL, 5);
1067
1443
bool restore_loglevel = true;
1099
1481
#endif /* __linux__ */
1100
exitcode = EXIT_FAILURE;
1482
exitcode = EX_OSERR;
1483
/* Lower privileges */
1103
1491
if((network.ifr_flags & IFF_UP) == 0){
1104
1492
network.ifr_flags |= IFF_UP;
1493
take_down_interface = true;
1105
1494
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1107
perror("ioctl SIOCSIFFLAGS");
1108
exitcode = EXIT_FAILURE;
1496
take_down_interface = false;
1497
perror("ioctl SIOCSIFFLAGS +IFF_UP");
1498
exitcode = EX_OSERR;
1109
1499
#ifdef __linux__
1110
1500
if(restore_loglevel){
1111
1501
ret = klogctl(7, NULL, 0);
1146
1545
#endif /* __linux__ */
1546
/* Lower privileges */
1548
if(take_down_interface){
1549
/* Lower privileges */
1555
/* Lower privileges permanently */
1163
1567
ret = init_gnutls_global(pubkey, seckey);
1165
1569
fprintf(stderr, "init_gnutls_global failed\n");
1166
exitcode = EXIT_FAILURE;
1570
exitcode = EX_UNAVAILABLE;
1169
1573
gnutls_initialized = true;
1172
1580
if(mkdtemp(tempdir) == NULL){
1173
1581
perror("mkdtemp");
1176
1584
tempdir_created = true;
1178
1590
if(not init_gpgme(pubkey, seckey, tempdir)){
1179
1591
fprintf(stderr, "init_gpgme failed\n");
1180
exitcode = EXIT_FAILURE;
1592
exitcode = EX_UNAVAILABLE;
1183
1595
gpgme_initialized = true;
1186
if(interface[0] != '\0'){
1187
if_index = (AvahiIfIndex) if_nametoindex(interface);
1189
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1190
exitcode = EXIT_FAILURE;
1195
1602
if(connect_to != NULL){
1198
1605
char *address = strrchr(connect_to, ':');
1199
1606
if(address == NULL){
1200
1607
fprintf(stderr, "No colon in address\n");
1201
exitcode = EXIT_FAILURE;
1608
exitcode = EX_USAGE;
1206
1618
tmpmax = strtoimax(address+1, &tmp, 10);
1207
1619
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1208
1620
or tmpmax != (uint16_t)tmpmax){
1209
1621
fprintf(stderr, "Bad port number\n");
1210
exitcode = EXIT_FAILURE;
1622
exitcode = EX_USAGE;
1213
1630
port = (uint16_t)tmpmax;
1214
1631
*address = '\0';
1215
1632
address = connect_to;
1223
ret = start_mandos_communication(address, port, if_index, af);
1225
exitcode = EXIT_FAILURE;
1645
while(not quit_now){
1646
ret = start_mandos_communication(address, port, if_index, af);
1647
if(quit_now or ret == 0){
1227
1654
exitcode = EXIT_SUCCESS;
1233
1665
AvahiServerConfig config;
1234
1666
/* Do not publish any local Zeroconf records */
1251
1683
if(mc.server == NULL){
1252
1684
fprintf(stderr, "Failed to create Avahi server: %s\n",
1253
1685
avahi_strerror(error));
1254
exitcode = EXIT_FAILURE;
1686
exitcode = EX_UNAVAILABLE;
1258
1694
/* Create the Avahi service browser */
1259
1695
sb = avahi_s_service_browser_new(mc.server, if_index,
1260
AVAHI_PROTO_INET6, "_mandos._tcp",
1696
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1261
1697
NULL, 0, browse_callback, NULL);
1262
1698
if(sb == NULL){
1263
1699
fprintf(stderr, "Failed to create service browser: %s\n",
1264
1700
avahi_strerror(avahi_server_errno(mc.server)));
1265
exitcode = EXIT_FAILURE;
1701
exitcode = EX_UNAVAILABLE;
1300
1740
gpgme_release(mc.ctx);
1303
/* Removes the temp directory used by GPGME */
1743
/* Take down the network interface */
1744
if(take_down_interface){
1745
/* Re-raise priviliges */
1752
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1754
perror("ioctl SIOCGIFFLAGS");
1755
} else if(network.ifr_flags & IFF_UP) {
1756
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1757
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1759
perror("ioctl SIOCSIFFLAGS -IFF_UP");
1762
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1766
/* Lower privileges permanently */
1775
/* Removes the GPGME temp directory and all files inside */
1304
1776
if(tempdir_created){
1306
struct dirent *direntry;
1307
d = opendir(tempdir);
1309
if(errno != ENOENT){
1314
direntry = readdir(d);
1315
if(direntry == NULL){
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'))){
1777
struct dirent **direntries = NULL;
1778
struct dirent *direntry = NULL;
1779
ret = scandir(tempdir, &direntries, notdotentries, alphasort);
1781
for(int i = 0; i < ret; i++){
1782
direntry = direntries[i];
1325
1783
char *fullname = NULL;
1326
1784
ret = asprintf(&fullname, "%s/%s", tempdir,
1327
1785
direntry->d_name);