36
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
38
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
41
39
#include <stdint.h> /* uint16_t, uint32_t */
42
40
#include <stddef.h> /* NULL, size_t, ssize_t */
43
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
45
#include <stdbool.h> /* bool, false, true */
43
#include <stdbool.h> /* bool, true */
46
44
#include <string.h> /* memset(), strcmp(), strlen(),
47
45
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
46
#include <sys/ioctl.h> /* ioctl */
49
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
48
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, uid_t, gid_t, open(),
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t, open(), opendir(), DIR */
53
51
#include <sys/stat.h> /* open() */
54
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
inet_pton(), connect() */
53
struct in6_addr, inet_pton(),
56
55
#include <fcntl.h> /* open() */
57
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
60
58
#include <assert.h> /* assert() */
61
59
#include <errno.h> /* perror(), errno */
62
#include <time.h> /* nanosleep(), time() */
60
#include <time.h> /* time() */
63
61
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
64
62
SIOCSIFFLAGS, if_indextoname(),
65
63
if_nametoindex(), IF_NAMESIZE */
66
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
67
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
64
#include <netinet/in.h>
69
65
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
66
getuid(), getgid(), setuid(),
72
68
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, or, and */
69
#include <iso646.h> /* not, and */
74
70
#include <argp.h> /* struct argp_option, error_t, struct
75
71
argp_state, struct argp,
76
72
argp_parse(), ARGP_KEY_ARG,
77
73
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <signal.h> /* sigemptyset(), sigaddset(),
79
sigaction(), SIGTERM, sigaction,
83
#include <sys/klog.h> /* klogctl() */
84
#endif /* __linux__ */
87
76
/* All Avahi types, constants and functions
444
432
/* GnuTLS server initialization */
445
ret = gnutls_dh_params_init(&mc.dh_params);
446
if(ret != GNUTLS_E_SUCCESS){
447
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
448
" %s\n", safer_gnutls_strerror(ret));
433
ret = gnutls_dh_params_init(&mc->dh_params);
434
if (ret != GNUTLS_E_SUCCESS) {
435
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
436
" %s\n", safer_gnutls_strerror(ret));
451
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
452
if(ret != GNUTLS_E_SUCCESS){
453
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
454
safer_gnutls_strerror(ret));
439
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
440
if (ret != GNUTLS_E_SUCCESS) {
441
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
442
safer_gnutls_strerror(ret));
458
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
446
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
464
gnutls_certificate_free_credentials(mc.cred);
452
gnutls_certificate_free_credentials(mc->cred);
465
453
gnutls_global_deinit();
466
gnutls_dh_params_deinit(mc.dh_params);
454
gnutls_dh_params_deinit(mc->dh_params);
470
static int init_gnutls_session(gnutls_session_t *session){
458
static int init_gnutls_session(mandos_context *mc,
459
gnutls_session_t *session){
472
461
/* GnuTLS session creation */
473
462
ret = gnutls_init(session, GNUTLS_SERVER);
474
if(ret != GNUTLS_E_SUCCESS){
463
if (ret != GNUTLS_E_SUCCESS){
475
464
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
476
465
safer_gnutls_strerror(ret));
481
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
482
if(ret != GNUTLS_E_SUCCESS){
470
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
471
if (ret != GNUTLS_E_SUCCESS) {
483
472
fprintf(stderr, "Syntax error at: %s\n", err);
484
473
fprintf(stderr, "GnuTLS error: %s\n",
485
474
safer_gnutls_strerror(ret));
486
gnutls_deinit(*session);
475
gnutls_deinit (*session);
491
480
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
493
if(ret != GNUTLS_E_SUCCESS){
482
if (ret != GNUTLS_E_SUCCESS) {
494
483
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
495
484
safer_gnutls_strerror(ret));
496
gnutls_deinit(*session);
485
gnutls_deinit (*session);
500
489
/* ignore client certificate if any. */
501
gnutls_certificate_server_set_request(*session,
490
gnutls_certificate_server_set_request (*session,
504
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
493
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
875
sig_atomic_t quit_now = 0;
877
static void handle_sigterm(__attribute__((unused)) int sig){
882
int old_errno = errno;
883
if(mc.simple_poll != NULL){
884
avahi_simple_poll_quit(mc.simple_poll);
889
814
int main(int argc, char *argv[]){
890
AvahiSServiceBrowser *sb = NULL;
895
int exitcode = EXIT_SUCCESS;
896
const char *interface = "eth0";
897
struct ifreq network;
901
char *connect_to = NULL;
902
char tempdir[] = "/tmp/mandosXXXXXX";
903
bool tempdir_created = false;
904
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
905
const char *seckey = PATHDIR "/" SECKEY;
906
const char *pubkey = PATHDIR "/" PUBKEY;
908
/* Initialize Mandos context */
909
mc = (mandos_context){ .simple_poll = NULL, .server = NULL,
910
.dh_bits = 1024, .priority = "SECURE256"
911
":!CTYPE-X.509:+CTYPE-OPENPGP" };
912
bool gnutls_initialized = false;
913
bool gpgme_initialized = false;
815
AvahiSServiceBrowser *sb = NULL;
818
int exitcode = EXIT_SUCCESS;
819
const char *interface = "eth0";
820
struct ifreq network;
824
char *connect_to = NULL;
825
char tempdir[] = "/tmp/mandosXXXXXX";
826
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
827
const char *seckey = PATHDIR "/" SECKEY;
828
const char *pubkey = PATHDIR "/" PUBKEY;
830
mandos_context mc = { .simple_poll = NULL, .server = NULL,
831
.dh_bits = 1024, .priority = "SECURE256"
832
":!CTYPE-X.509:+CTYPE-OPENPGP" };
833
bool gnutls_initalized = false;
834
bool gpgme_initalized = false;
837
struct argp_option options[] = {
838
{ .name = "debug", .key = 128,
839
.doc = "Debug mode", .group = 3 },
840
{ .name = "connect", .key = 'c',
841
.arg = "ADDRESS:PORT",
842
.doc = "Connect directly to a specific Mandos server",
844
{ .name = "interface", .key = 'i',
846
.doc = "Interface that will be used to search for Mandos"
849
{ .name = "seckey", .key = 's',
851
.doc = "OpenPGP secret key file base name",
853
{ .name = "pubkey", .key = 'p',
855
.doc = "OpenPGP public key file base name",
857
{ .name = "dh-bits", .key = 129,
859
.doc = "Bit length of the prime number used in the"
860
" Diffie-Hellman key exchange",
862
{ .name = "priority", .key = 130,
864
.doc = "GnuTLS priority string for the TLS handshake",
869
error_t parse_opt (int key, char *arg,
870
struct argp_state *state) {
871
/* Get the INPUT argument from `argp_parse', which we know is
872
a pointer to our plugin list pointer. */
874
case 128: /* --debug */
877
case 'c': /* --connect */
880
case 'i': /* --interface */
883
case 's': /* --seckey */
886
case 'p': /* --pubkey */
889
case 129: /* --dh-bits */
891
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
897
case 130: /* --priority */
905
return ARGP_ERR_UNKNOWN;
910
struct argp argp = { .options = options, .parser = parse_opt,
912
.doc = "Mandos client -- Get and decrypt"
913
" passwords from a Mandos server" };
914
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
915
if (ret == ARGP_ERR_UNKNOWN){
916
fprintf(stderr, "Unknown error while parsing arguments\n");
917
exitcode = EXIT_FAILURE;
922
ret = init_gnutls_global(&mc, pubkey, seckey);
924
fprintf(stderr, "init_gnutls_global failed\n");
925
exitcode = EXIT_FAILURE;
928
gnutls_initalized = true;
916
struct sigaction old_sigterm_action;
917
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
920
struct argp_option options[] = {
921
{ .name = "debug", .key = 128,
922
.doc = "Debug mode", .group = 3 },
923
{ .name = "connect", .key = 'c',
924
.arg = "ADDRESS:PORT",
925
.doc = "Connect directly to a specific Mandos server",
927
{ .name = "interface", .key = 'i',
929
.doc = "Network interface that will be used to search for"
932
{ .name = "seckey", .key = 's',
934
.doc = "OpenPGP secret key file base name",
936
{ .name = "pubkey", .key = 'p',
938
.doc = "OpenPGP public key file base name",
940
{ .name = "dh-bits", .key = 129,
942
.doc = "Bit length of the prime number used in the"
943
" Diffie-Hellman key exchange",
945
{ .name = "priority", .key = 130,
947
.doc = "GnuTLS priority string for the TLS handshake",
949
{ .name = "delay", .key = 131,
951
.doc = "Maximum delay to wait for interface startup",
956
error_t parse_opt(int key, char *arg,
957
struct argp_state *state){
959
case 128: /* --debug */
962
case 'c': /* --connect */
965
case 'i': /* --interface */
968
case 's': /* --seckey */
971
case 'p': /* --pubkey */
974
case 129: /* --dh-bits */
975
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
976
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
977
or arg[numchars] != '\0'){
978
fprintf(stderr, "Bad number of DH bits\n");
981
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
983
case 130: /* --priority */
986
case 131: /* --delay */
987
ret = sscanf(arg, "%lf%n", &delay, &numchars);
988
if(ret < 1 or arg[numchars] != '\0'){
989
fprintf(stderr, "Bad delay\n");
998
return ARGP_ERR_UNKNOWN;
1003
struct argp argp = { .options = options, .parser = parse_opt,
1005
.doc = "Mandos client -- Get and decrypt"
1006
" passwords from a Mandos server" };
1007
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1008
if(ret == ARGP_ERR_UNKNOWN){
1009
fprintf(stderr, "Unknown error while parsing arguments\n");
1010
exitcode = EXIT_FAILURE;
1015
/* If the interface is down, bring it up */
1016
if(interface[0] != '\0'){
1018
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1019
messages to mess up the prompt */
1020
ret = klogctl(8, NULL, 5);
1021
bool restore_loglevel = true;
1023
restore_loglevel = false;
1026
#endif /* __linux__ */
1028
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1031
exitcode = EXIT_FAILURE;
1033
if(restore_loglevel){
1034
ret = klogctl(7, NULL, 0);
1039
#endif /* __linux__ */
1042
strcpy(network.ifr_name, interface);
1043
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1045
perror("ioctl SIOCGIFFLAGS");
1047
if(restore_loglevel){
1048
ret = klogctl(7, NULL, 0);
1053
#endif /* __linux__ */
1054
exitcode = EXIT_FAILURE;
1057
if((network.ifr_flags & IFF_UP) == 0){
1058
network.ifr_flags |= IFF_UP;
1059
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1061
perror("ioctl SIOCSIFFLAGS");
931
if(mkdtemp(tempdir) == NULL){
937
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
938
fprintf(stderr, "gpgme_initalized failed\n");
939
exitcode = EXIT_FAILURE;
942
gpgme_initalized = true;
945
/* If the interface is down, bring it up */
947
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1062
950
exitcode = EXIT_FAILURE;
1064
if(restore_loglevel){
1065
ret = klogctl(7, NULL, 0);
1070
#endif /* __linux__ */
1074
/* sleep checking until interface is running */
1075
for(int i=0; i < delay * 4; i++){
953
strcpy(network.ifr_name, interface);
1076
954
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1078
956
perror("ioctl SIOCGIFFLAGS");
1079
} else if(network.ifr_flags & IFF_RUNNING){
1082
struct timespec sleeptime = { .tv_nsec = 250000000 };
1083
ret = nanosleep(&sleeptime, NULL);
1084
if(ret == -1 and errno != EINTR){
1085
perror("nanosleep");
1088
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1093
if(restore_loglevel){
1094
/* Restores kernel loglevel to default */
1095
ret = klogctl(7, NULL, 0);
957
exitcode = EXIT_FAILURE;
960
if((network.ifr_flags & IFF_UP) == 0){
961
network.ifr_flags |= IFF_UP;
962
ret = ioctl(sd, SIOCSIFFLAGS, &network);
964
perror("ioctl SIOCSIFFLAGS");
965
exitcode = EXIT_FAILURE;
969
ret = TEMP_FAILURE_RETRY(close(sd));
1100
#endif /* __linux__ */
1117
ret = init_gnutls_global(pubkey, seckey);
1119
fprintf(stderr, "init_gnutls_global failed\n");
1120
exitcode = EXIT_FAILURE;
1123
gnutls_initialized = true;
1126
if(mkdtemp(tempdir) == NULL){
1130
tempdir_created = true;
1132
if(not init_gpgme(pubkey, seckey, tempdir)){
1133
fprintf(stderr, "init_gpgme failed\n");
1134
exitcode = EXIT_FAILURE;
1137
gpgme_initialized = true;
1140
if(interface[0] != '\0'){
1141
988
if_index = (AvahiIfIndex) if_nametoindex(interface);
1142
989
if(if_index == 0){
1143
990
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1144
exitcode = EXIT_FAILURE;
1149
if(connect_to != NULL){
1150
/* Connect directly, do not use Zeroconf */
1151
/* (Mainly meant for debugging) */
1152
char *address = strrchr(connect_to, ':');
1153
if(address == NULL){
1154
fprintf(stderr, "No colon in address\n");
1155
exitcode = EXIT_FAILURE;
1159
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1160
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1161
or address[numchars+1] != '\0'){
1162
fprintf(stderr, "Bad port number\n");
1163
exitcode = EXIT_FAILURE;
1166
port = (uint16_t)tmpmax;
1168
address = connect_to;
1169
/* Colon in address indicates IPv6 */
1171
if(strchr(address, ':') != NULL){
1176
ret = start_mandos_communication(address, port, if_index, af);
1178
exitcode = EXIT_FAILURE;
1180
exitcode = EXIT_SUCCESS;
1186
avahi_set_log_function(empty_log);
1189
/* Initialize the pseudo-RNG for Avahi */
1190
srand((unsigned int) time(NULL));
1192
/* Allocate main Avahi loop object */
1193
mc.simple_poll = avahi_simple_poll_new();
1194
if(mc.simple_poll == NULL){
1195
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1196
exitcode = EXIT_FAILURE;
1201
AvahiServerConfig config;
1202
/* Do not publish any local Zeroconf records */
1203
avahi_server_config_init(&config);
1204
config.publish_hinfo = 0;
1205
config.publish_addresses = 0;
1206
config.publish_workstation = 0;
1207
config.publish_domain = 0;
1209
/* Allocate a new server */
1210
mc.server = avahi_server_new(avahi_simple_poll_get
1211
(mc.simple_poll), &config, NULL,
1214
/* Free the Avahi configuration data */
1215
avahi_server_config_free(&config);
1218
/* Check if creating the Avahi server object succeeded */
1219
if(mc.server == NULL){
1220
fprintf(stderr, "Failed to create Avahi server: %s\n",
1221
avahi_strerror(error));
1222
exitcode = EXIT_FAILURE;
1226
/* Create the Avahi service browser */
1227
sb = avahi_s_service_browser_new(mc.server, if_index,
1228
AVAHI_PROTO_INET6, "_mandos._tcp",
1229
NULL, 0, browse_callback, NULL);
1231
fprintf(stderr, "Failed to create service browser: %s\n",
1232
avahi_strerror(avahi_server_errno(mc.server)));
1233
exitcode = EXIT_FAILURE;
1237
sigemptyset(&sigterm_action.sa_mask);
1238
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1240
perror("sigaddset");
1241
exitcode = EXIT_FAILURE;
1244
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1246
perror("sigaddset");
1247
exitcode = EXIT_FAILURE;
1250
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1252
perror("sigaddset");
1253
exitcode = EXIT_FAILURE;
1256
ret = sigaction(SIGTERM, &sigterm_action, &old_sigterm_action);
1258
perror("sigaction");
1259
exitcode = EXIT_FAILURE;
1263
/* Run the main loop */
1266
fprintf(stderr, "Starting Avahi loop search\n");
1269
avahi_simple_poll_loop(mc.simple_poll);
994
if(connect_to != NULL){
995
/* Connect directly, do not use Zeroconf */
996
/* (Mainly meant for debugging) */
997
char *address = strrchr(connect_to, ':');
999
fprintf(stderr, "No colon in address\n");
1000
exitcode = EXIT_FAILURE;
1004
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1006
perror("Bad port number");
1007
exitcode = EXIT_FAILURE;
1011
address = connect_to;
1012
ret = start_mandos_communication(address, port, if_index, &mc);
1014
exitcode = EXIT_FAILURE;
1016
exitcode = EXIT_SUCCESS;
1022
avahi_set_log_function(empty_log);
1025
/* Initialize the pseudo-RNG for Avahi */
1026
srand((unsigned int) time(NULL));
1028
/* Allocate main Avahi loop object */
1029
mc.simple_poll = avahi_simple_poll_new();
1030
if (mc.simple_poll == NULL) {
1031
fprintf(stderr, "Avahi: Failed to create simple poll"
1033
exitcode = EXIT_FAILURE;
1038
AvahiServerConfig config;
1039
/* Do not publish any local Zeroconf records */
1040
avahi_server_config_init(&config);
1041
config.publish_hinfo = 0;
1042
config.publish_addresses = 0;
1043
config.publish_workstation = 0;
1044
config.publish_domain = 0;
1046
/* Allocate a new server */
1047
mc.server = avahi_server_new(avahi_simple_poll_get
1048
(mc.simple_poll), &config, NULL,
1051
/* Free the Avahi configuration data */
1052
avahi_server_config_free(&config);
1055
/* Check if creating the Avahi server object succeeded */
1056
if (mc.server == NULL) {
1057
fprintf(stderr, "Failed to create Avahi server: %s\n",
1058
avahi_strerror(error));
1059
exitcode = EXIT_FAILURE;
1063
/* Create the Avahi service browser */
1064
sb = avahi_s_service_browser_new(mc.server, if_index,
1066
"_mandos._tcp", NULL, 0,
1067
browse_callback, &mc);
1069
fprintf(stderr, "Failed to create service browser: %s\n",
1070
avahi_strerror(avahi_server_errno(mc.server)));
1071
exitcode = EXIT_FAILURE;
1075
/* Run the main loop */
1078
fprintf(stderr, "Starting Avahi loop search\n");
1081
avahi_simple_poll_loop(mc.simple_poll);
1274
fprintf(stderr, "%s exiting\n", argv[0]);
1277
/* Cleanup things */
1279
avahi_s_service_browser_free(sb);
1281
if(mc.server != NULL)
1282
avahi_server_free(mc.server);
1284
if(mc.simple_poll != NULL)
1285
avahi_simple_poll_free(mc.simple_poll);
1287
if(gnutls_initialized){
1288
gnutls_certificate_free_credentials(mc.cred);
1289
gnutls_global_deinit();
1290
gnutls_dh_params_deinit(mc.dh_params);
1293
if(gpgme_initialized){
1294
gpgme_release(mc.ctx);
1297
/* Removes the temp directory used by GPGME */
1298
if(tempdir_created){
1300
struct dirent *direntry;
1301
d = opendir(tempdir);
1303
if(errno != ENOENT){
1086
fprintf(stderr, "%s exiting\n", argv[0]);
1089
/* Cleanup things */
1091
avahi_s_service_browser_free(sb);
1093
if (mc.server != NULL)
1094
avahi_server_free(mc.server);
1096
if (mc.simple_poll != NULL)
1097
avahi_simple_poll_free(mc.simple_poll);
1099
if (gnutls_initalized){
1100
gnutls_certificate_free_credentials(mc.cred);
1101
gnutls_global_deinit ();
1102
gnutls_dh_params_deinit(mc.dh_params);
1105
if(gpgme_initalized){
1106
gpgme_release(mc.ctx);
1109
/* Removes the temp directory used by GPGME */
1110
if(tempdir[0] != '\0'){
1112
struct dirent *direntry;
1113
d = opendir(tempdir);
1304
1115
perror("opendir");
1308
direntry = readdir(d);
1309
if(direntry == NULL){
1312
/* Skip "." and ".." */
1313
if(direntry->d_name[0] == '.'
1314
and (direntry->d_name[1] == '\0'
1315
or (direntry->d_name[1] == '.'
1316
and direntry->d_name[2] == '\0'))){
1319
char *fullname = NULL;
1320
ret = asprintf(&fullname, "%s/%s", tempdir,
1326
ret = remove(fullname);
1328
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1335
ret = rmdir(tempdir);
1336
if(ret == -1 and errno != ENOENT){
1118
direntry = readdir(d);
1119
if(direntry == NULL){
1122
if (direntry->d_type == DT_REG){
1123
char *fullname = NULL;
1124
ret = asprintf(&fullname, "%s/%s", tempdir,
1130
ret = unlink(fullname);
1132
fprintf(stderr, "unlink(\"%s\"): %s",
1133
fullname, strerror(errno));
1140
ret = rmdir(tempdir);