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- Committer: Teddy Hogeborn
- Date: 2016-08-25 16:17:23 UTC
- Revision ID: teddy@recompile.se-20160825161723-wsbn6sxyk29qgmsv
PEP8 compliance: mandos-ctl
* mandos-ctl: Add PEP8 compliance (as per the "pycodestyle" tool).
* mandos-ctl: Add PEP8 compliance (as per the "pycodestyle" tool).
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008-2015 Teddy Hogeborn
13
* Copyright © 2008-2015 Björn Påhlsson
12
* Copyright © 2008-2016 Teddy Hogeborn
13
* Copyright © 2008-2016 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
46
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
47
47
strtof(), abort() */
48
48
#include <stdbool.h> /* bool, false, true */
49
#include <string.h> /* memset(), strcmp(), strlen(),
50
strerror(), asprintf(), strcpy() */
49
#include <string.h> /* strcmp(), strlen(), strerror(),
50
asprintf(), strncpy(), strsignal()
51
*/
51
52
#include <sys/ioctl.h> /* ioctl */
52
53
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
53
54
sockaddr_in6, PF_INET6,
57
58
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
59
inet_pton(), connect(),
59
60
getnameinfo() */
60
#include <fcntl.h> /* open(), unlinkat() */
61
#include <fcntl.h> /* open(), unlinkat(), AT_REMOVEDIR */
61
62
#include <dirent.h> /* opendir(), struct dirent, readdir()
62
63
*/
63
64
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
64
65
strtoimax() */
65
#include <errno.h> /* perror(), errno,
66
#include <errno.h> /* perror(), errno, EINTR, EINVAL,
67
EAI_SYSTEM, ENETUNREACH,
68
EHOSTUNREACH, ECONNREFUSED, EPROTO,
69
EIO, ENOENT, ENXIO, ENOMEM, EISDIR,
70
ENOTEMPTY,
66
71
program_invocation_short_name */
67
72
#include <time.h> /* nanosleep(), time(), sleep() */
68
73
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
305
310
return false;
306
311
}
307
312
308
ret = (int)TEMP_FAILURE_RETRY(close(fd));
313
ret = close(fd);
309
314
if(ret == -1){
310
315
perror_plus("close");
311
316
}
513
518
fprintf_plus(stderr, "GnuTLS: %s", string);
514
519
}
515
520
516
__attribute__((nonnull, warn_unused_result))
521
__attribute__((nonnull(1, 2, 4), warn_unused_result))
517
522
static int init_gnutls_global(const char *pubkeyfilename,
518
523
const char *seckeyfilename,
519
524
const char *dhparamsfilename,
525
530
fprintf_plus(stderr, "Initializing GnuTLS\n");
526
531
}
527
532
528
ret = gnutls_global_init();
529
if(ret != GNUTLS_E_SUCCESS){
530
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
531
safer_gnutls_strerror(ret));
532
return -1;
533
}
534
535
533
if(debug){
536
534
/* "Use a log level over 10 to enable all debugging options."
537
535
* - GnuTLS manual
545
543
if(ret != GNUTLS_E_SUCCESS){
546
544
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
547
545
safer_gnutls_strerror(ret));
548
gnutls_global_deinit();
549
546
return -1;
550
547
}
551
548
755
752
globalfail:
756
753
757
754
gnutls_certificate_free_credentials(mc->cred);
758
gnutls_global_deinit();
759
755
gnutls_dh_params_deinit(mc->dh_params);
760
756
return -1;
761
757
}
822
818
823
819
/* Set effective uid to 0, return errno */
824
820
__attribute__((warn_unused_result))
825
error_t raise_privileges(void){
826
error_t old_errno = errno;
827
error_t ret_errno = 0;
821
int raise_privileges(void){
822
int old_errno = errno;
823
int ret = 0;
828
824
if(seteuid(0) == -1){
829
ret_errno = errno;
825
ret = errno;
830
826
}
831
827
errno = old_errno;
832
return ret_errno;
828
return ret;
833
829
}
834
830
835
831
/* Set effective and real user ID to 0. Return errno. */
836
832
__attribute__((warn_unused_result))
837
error_t raise_privileges_permanently(void){
838
error_t old_errno = errno;
839
error_t ret_errno = raise_privileges();
840
if(ret_errno != 0){
833
int raise_privileges_permanently(void){
834
int old_errno = errno;
835
int ret = raise_privileges();
836
if(ret != 0){
841
837
errno = old_errno;
842
return ret_errno;
838
return ret;
843
839
}
844
840
if(setuid(0) == -1){
845
ret_errno = errno;
841
ret = errno;
846
842
}
847
843
errno = old_errno;
848
return ret_errno;
844
return ret;
849
845
}
850
846
851
847
/* Set effective user ID to unprivileged saved user ID */
852
848
__attribute__((warn_unused_result))
853
error_t lower_privileges(void){
854
error_t old_errno = errno;
855
error_t ret_errno = 0;
849
int lower_privileges(void){
850
int old_errno = errno;
851
int ret = 0;
856
852
if(seteuid(uid) == -1){
857
ret_errno = errno;
853
ret = errno;
858
854
}
859
855
errno = old_errno;
860
return ret_errno;
856
return ret;
861
857
}
862
858
863
859
/* Lower privileges permanently */
864
860
__attribute__((warn_unused_result))
865
error_t lower_privileges_permanently(void){
866
error_t old_errno = errno;
867
error_t ret_errno = 0;
861
int lower_privileges_permanently(void){
862
int old_errno = errno;
863
int ret = 0;
868
864
if(setuid(uid) == -1){
869
ret_errno = errno;
865
ret = errno;
870
866
}
871
867
errno = old_errno;
872
return ret_errno;
868
return ret;
873
869
}
874
870
875
871
/* Helper function to add_local_route() and delete_local_route() */
931
927
perror_plus("dup2(devnull, STDIN_FILENO)");
932
928
_exit(EX_OSERR);
933
929
}
934
ret = (int)TEMP_FAILURE_RETRY(close(devnull));
930
ret = close(devnull);
935
931
if(ret == -1){
936
932
perror_plus("close");
937
933
_exit(EX_OSERR);
954
950
helper, O_RDONLY));
955
951
if(helper_fd == -1){
956
952
perror_plus("openat");
953
close(helperdir_fd);
957
954
_exit(EX_UNAVAILABLE);
958
955
}
959
TEMP_FAILURE_RETRY(close(helperdir_fd));
956
close(helperdir_fd);
960
957
#ifdef __GNUC__
961
958
#pragma GCC diagnostic push
962
959
#pragma GCC diagnostic ignored "-Wcast-qual"
1130
1127
goto mandos_end;
1131
1128
}
1132
1129
1133
memset(&to, 0, sizeof(to));
1134
1130
if(af == AF_INET6){
1135
((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
1136
ret = inet_pton(af, ip, &((struct sockaddr_in6 *)&to)->sin6_addr);
1131
struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&to;
1132
*to6 = (struct sockaddr_in6){ .sin6_family = (sa_family_t)af };
1133
ret = inet_pton(af, ip, &to6->sin6_addr);
1137
1134
} else { /* IPv4 */
1138
((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
1139
ret = inet_pton(af, ip, &((struct sockaddr_in *)&to)->sin_addr);
1135
struct sockaddr_in *to4 = (struct sockaddr_in *)&to;
1136
*to4 = (struct sockaddr_in){ .sin_family = (sa_family_t)af };
1137
ret = inet_pton(af, ip, &to4->sin_addr);
1140
1138
}
1141
1139
if(ret < 0 ){
1142
1140
int e = errno;
1221
1219
sizeof(struct sockaddr_in));
1222
1220
}
1223
1221
if(ret < 0){
1224
if(errno == ENETUNREACH
1222
if(((errno == ENETUNREACH) or (errno == EHOSTUNREACH))
1225
1223
and if_index != AVAHI_IF_UNSPEC
1226
1224
and connect_to == NULL
1227
1225
and not route_added and
1240
1238
with an explicit route added with the server's address.
1241
1239
1242
1240
Avahi bug reference:
1243
http://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1241
https://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1244
1242
https://bugs.debian.org/587961
1245
1243
*/
1246
1244
if(debug){
1426
1424
&decrypted_buffer, mc);
1427
1425
if(decrypted_buffer_size >= 0){
1428
1426
1427
clearerr(stdout);
1429
1428
written = 0;
1430
1429
while(written < (size_t) decrypted_buffer_size){
1431
1430
if(quit_now){
1447
1446
}
1448
1447
written += (size_t)ret;
1449
1448
}
1449
ret = fflush(stdout);
1450
if(ret != 0){
1451
int e = errno;
1452
if(debug){
1453
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
1454
strerror(errno));
1455
}
1456
errno = e;
1457
goto mandos_end;
1458
}
1450
1459
retval = 0;
1451
1460
}
1452
1461
}
1465
1474
free(decrypted_buffer);
1466
1475
free(buffer);
1467
1476
if(tcp_sd >= 0){
1468
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
1477
ret = close(tcp_sd);
1469
1478
}
1470
1479
if(ret == -1){
1471
1480
if(e == 0){
1626
1635
__attribute__((nonnull, warn_unused_result))
1627
1636
bool get_flags(const char *ifname, struct ifreq *ifr){
1628
1637
int ret;
1629
error_t ret_errno;
1638
int old_errno;
1630
1639
1631
1640
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1632
1641
if(s < 0){
1633
ret_errno = errno;
1642
old_errno = errno;
1634
1643
perror_plus("socket");
1635
errno = ret_errno;
1644
errno = old_errno;
1636
1645
return false;
1637
1646
}
1638
strcpy(ifr->ifr_name, ifname);
1647
strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
1648
ifr->ifr_name[IF_NAMESIZE-1] = '\0'; /* NUL terminate */
1639
1649
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1640
1650
if(ret == -1){
1641
1651
if(debug){
1642
ret_errno = errno;
1652
old_errno = errno;
1643
1653
perror_plus("ioctl SIOCGIFFLAGS");
1644
errno = ret_errno;
1654
errno = old_errno;
1645
1655
}
1646
1656
return false;
1647
1657
}
1911
1921
return;
1912
1922
}
1913
1923
}
1914
#ifdef __GLIBC__
1915
#if __GLIBC_PREREQ(2, 15)
1916
1924
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1917
1925
runnable_hook, alphasort);
1918
#else /* not __GLIBC_PREREQ(2, 15) */
1919
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1920
alphasort);
1921
#endif /* not __GLIBC_PREREQ(2, 15) */
1922
#else /* not __GLIBC__ */
1923
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1924
alphasort);
1925
#endif /* not __GLIBC__ */
1926
1926
if(numhooks == -1){
1927
1927
perror_plus("scandir");
1928
1928
return;
2010
2010
perror_plus("openat");
2011
2011
_exit(EXIT_FAILURE);
2012
2012
}
2013
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
2013
if(close(hookdir_fd) == -1){
2014
2014
perror_plus("close");
2015
2015
_exit(EXIT_FAILURE);
2016
2016
}
2019
2019
perror_plus("dup2(devnull, STDIN_FILENO)");
2020
2020
_exit(EX_OSERR);
2021
2021
}
2022
ret = (int)TEMP_FAILURE_RETRY(close(devnull));
2022
ret = close(devnull);
2023
2023
if(ret == -1){
2024
2024
perror_plus("close");
2025
2025
_exit(EX_OSERR);
2074
2074
free(direntry);
2075
2075
}
2076
2076
free(direntries);
2077
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
2077
if(close(hookdir_fd) == -1){
2078
2078
perror_plus("close");
2079
2079
} else {
2080
2080
hookdir_fd = -1;
2083
2083
}
2084
2084
2085
2085
__attribute__((nonnull, warn_unused_result))
2086
error_t bring_up_interface(const char *const interface,
2087
const float delay){
2088
error_t old_errno = errno;
2086
int bring_up_interface(const char *const interface,
2087
const float delay){
2088
int old_errno = errno;
2089
2089
int ret;
2090
2090
struct ifreq network;
2091
2091
unsigned int if_index = if_nametoindex(interface);
2101
2101
}
2102
2102
2103
2103
if(not interface_is_up(interface)){
2104
error_t ret_errno = 0, ioctl_errno = 0;
2104
int ret_errno = 0;
2105
int ioctl_errno = 0;
2105
2106
if(not get_flags(interface, &network)){
2106
2107
ret_errno = errno;
2107
2108
fprintf_plus(stderr, "Failed to get flags for interface "
2120
2121
}
2121
2122
2122
2123
if(quit_now){
2123
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2124
ret = close(sd);
2124
2125
if(ret == -1){
2125
2126
perror_plus("close");
2126
2127
}
2176
2177
}
2177
2178
2178
2179
/* Close the socket */
2179
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2180
ret = close(sd);
2180
2181
if(ret == -1){
2181
2182
perror_plus("close");
2182
2183
}
2210
2211
}
2211
2212
2212
2213
__attribute__((nonnull, warn_unused_result))
2213
error_t take_down_interface(const char *const interface){
2214
error_t old_errno = errno;
2214
int take_down_interface(const char *const interface){
2215
int old_errno = errno;
2215
2216
struct ifreq network;
2216
2217
unsigned int if_index = if_nametoindex(interface);
2217
2218
if(if_index == 0){
2220
2221
return ENXIO;
2221
2222
}
2222
2223
if(interface_is_up(interface)){
2223
error_t ret_errno = 0, ioctl_errno = 0;
2224
int ret_errno = 0;
2225
int ioctl_errno = 0;
2224
2226
if(not get_flags(interface, &network) and debug){
2225
2227
ret_errno = errno;
2226
2228
fprintf_plus(stderr, "Failed to get flags for interface "
2264
2266
}
2265
2267
2266
2268
/* Close the socket */
2267
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
2269
int ret = close(sd);
2268
2270
if(ret == -1){
2269
2271
perror_plus("close");
2270
2272
}
2286
2288
2287
2289
int main(int argc, char *argv[]){
2288
2290
mandos_context mc = { .server = NULL, .dh_bits = 0,
2289
.priority = "SECURE256:!CTYPE-X.509:"
2290
"+CTYPE-OPENPGP:!RSA", .current_server = NULL,
2291
.interfaces = NULL, .interfaces_size = 0 };
2291
.priority = "SECURE256:!CTYPE-X.509"
2292
":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
2293
.current_server = NULL, .interfaces = NULL,
2294
.interfaces_size = 0 };
2292
2295
AvahiSServiceBrowser *sb = NULL;
2293
2296
error_t ret_errno;
2294
2297
int ret;
2475
2478
.args_doc = "",
2476
2479
.doc = "Mandos client -- Get and decrypt"
2477
2480
" passwords from a Mandos server" };
2478
ret = argp_parse(&argp, argc, argv,
2479
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2480
switch(ret){
2481
ret_errno = argp_parse(&argp, argc, argv,
2482
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2483
switch(ret_errno){
2481
2484
case 0:
2482
2485
break;
2483
2486
case ENOMEM:
2484
2487
default:
2485
errno = ret;
2488
errno = ret_errno;
2486
2489
perror_plus("argp_parse");
2487
2490
exitcode = EX_OSERR;
2488
2491
goto end;
2494
2497
2495
2498
{
2496
2499
/* Work around Debian bug #633582:
2497
<http://bugs.debian.org/633582> */
2500
<https://bugs.debian.org/633582> */
2498
2501
2499
2502
/* Re-raise privileges */
2500
ret_errno = raise_privileges();
2501
if(ret_errno != 0){
2502
errno = ret_errno;
2503
ret = raise_privileges();
2504
if(ret != 0){
2505
errno = ret;
2503
2506
perror_plus("Failed to raise privileges");
2504
2507
} else {
2505
2508
struct stat st;
2521
2524
}
2522
2525
}
2523
2526
}
2524
TEMP_FAILURE_RETRY(close(seckey_fd));
2527
close(seckey_fd);
2525
2528
}
2526
2529
}
2527
2530
2542
2545
}
2543
2546
}
2544
2547
}
2545
TEMP_FAILURE_RETRY(close(pubkey_fd));
2548
close(pubkey_fd);
2546
2549
}
2547
2550
}
2548
2551
2549
if(strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
2552
if(dh_params_file != NULL
2553
and strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
2550
2554
int dhparams_fd = open(dh_params_file, O_RDONLY);
2551
2555
if(dhparams_fd == -1){
2552
2556
perror_plus("open");
2563
2567
}
2564
2568
}
2565
2569
}
2566
TEMP_FAILURE_RETRY(close(dhparams_fd));
2570
close(dhparams_fd);
2567
2571
}
2568
2572
}
2569
2573
2570
2574
/* Lower privileges */
2571
ret_errno = lower_privileges();
2572
if(ret_errno != 0){
2573
errno = ret_errno;
2575
ret = lower_privileges();
2576
if(ret != 0){
2577
errno = ret;
2574
2578
perror_plus("Failed to lower privileges");
2575
2579
}
2576
2580
}
2904
2908
2905
2909
/* Allocate a new server */
2906
2910
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
2907
&config, NULL, NULL, &ret_errno);
2911
&config, NULL, NULL, &ret);
2908
2912
2909
2913
/* Free the Avahi configuration data */
2910
2914
avahi_server_config_free(&config);
2913
2917
/* Check if creating the Avahi server object succeeded */
2914
2918
if(mc.server == NULL){
2915
2919
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2916
avahi_strerror(ret_errno));
2920
avahi_strerror(ret));
2917
2921
exitcode = EX_UNAVAILABLE;
2918
2922
goto end;
2919
2923
}
2954
2958
end:
2955
2959
2956
2960
if(debug){
2957
fprintf_plus(stderr, "%s exiting\n", argv[0]);
2961
if(signal_received){
2962
fprintf_plus(stderr, "%s exiting due to signal %d: %s\n",
2963
argv[0], signal_received,
2964
strsignal(signal_received));
2965
} else {
2966
fprintf_plus(stderr, "%s exiting\n", argv[0]);
2967
}
2958
2968
}
2959
2969
2960
2970
/* Cleanup things */
2971
2981
2972
2982
if(gnutls_initialized){
2973
2983
gnutls_certificate_free_credentials(mc.cred);
2974
gnutls_global_deinit();
2975
2984
gnutls_dh_params_deinit(mc.dh_params);
2976
2985
}
2977
2986
3000
3009
3001
3010
/* Re-raise privileges */
3002
3011
{
3003
ret_errno = raise_privileges();
3004
if(ret_errno != 0){
3005
errno = ret_errno;
3012
ret = raise_privileges();
3013
if(ret != 0){
3014
errno = ret;
3006
3015
perror_plus("Failed to raise privileges");
3007
3016
} else {
3008
3017
3016
3025
while((interface=argz_next(interfaces_to_take_down,
3017
3026
interfaces_to_take_down_size,
3018
3027
interface))){
3019
ret_errno = take_down_interface(interface);
3020
if(ret_errno != 0){
3021
errno = ret_errno;
3028
ret = take_down_interface(interface);
3029
if(ret != 0){
3030
errno = ret;
3022
3031
perror_plus("Failed to take down interface");
3023
3032
}
3024
3033
}
3029
3038
}
3030
3039
}
3031
3040
3032
ret_errno = lower_privileges_permanently();
3033
if(ret_errno != 0){
3034
errno = ret_errno;
3041
ret = lower_privileges_permanently();
3042
if(ret != 0){
3043
errno = ret;
3035
3044
perror_plus("Failed to lower privileges permanently");
3036
3045
}
3037
3046
}
3039
3048
free(interfaces_to_take_down);
3040
3049
free(interfaces_hooks);
3041
3050
3051
void clean_dir_at(int base, const char * const dirname,
3052
uintmax_t level){
3053
struct dirent **direntries = NULL;
3054
int dret;
3055
int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3056
O_RDONLY
3057
| O_NOFOLLOW
3058
| O_DIRECTORY
3059
| O_PATH));
3060
if(dir_fd == -1){
3061
perror_plus("open");
3062
}
3063
int numentries = scandirat(dir_fd, ".", &direntries,
3064
notdotentries, alphasort);
3065
if(numentries >= 0){
3066
for(int i = 0; i < numentries; i++){
3067
if(debug){
3068
fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3069
dirname, direntries[i]->d_name);
3070
}
3071
dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3072
if(dret == -1){
3073
if(errno == EISDIR){
3074
dret = unlinkat(dir_fd, direntries[i]->d_name,
3075
AT_REMOVEDIR);
3076
}
3077
if((dret == -1) and (errno == ENOTEMPTY)
3078
and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3079
== 0) and (level == 0)){
3080
/* Recurse only in this special case */
3081
clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3082
dret = 0;
3083
}
3084
if(dret == -1){
3085
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3086
direntries[i]->d_name, strerror(errno));
3087
}
3088
}
3089
free(direntries[i]);
3090
}
3091
3092
/* need to clean even if 0 because man page doesn't specify */
3093
free(direntries);
3094
if(numentries == -1){
3095
perror_plus("scandirat");
3096
}
3097
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3098
if(dret == -1 and errno != ENOENT){
3099
perror_plus("rmdir");
3100
}
3101
} else {
3102
perror_plus("scandirat");
3103
}
3104
close(dir_fd);
3105
}
3106
3042
3107
/* Removes the GPGME temp directory and all files inside */
3043
3108
if(tempdir != NULL){
3044
struct dirent **direntries = NULL;
3045
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY
3046
| O_NOFOLLOW
3047
| O_DIRECTORY
3048
| O_PATH));
3049
if(tempdir_fd == -1){
3050
perror_plus("open");
3051
} else {
3052
#ifdef __GLIBC__
3053
#if __GLIBC_PREREQ(2, 15)
3054
int numentries = scandirat(tempdir_fd, ".", &direntries,
3055
notdotentries, alphasort);
3056
#else /* not __GLIBC_PREREQ(2, 15) */
3057
int numentries = scandir(tempdir, &direntries, notdotentries,
3058
alphasort);
3059
#endif /* not __GLIBC_PREREQ(2, 15) */
3060
#else /* not __GLIBC__ */
3061
int numentries = scandir(tempdir, &direntries, notdotentries,
3062
alphasort);
3063
#endif /* not __GLIBC__ */
3064
if(numentries >= 0){
3065
for(int i = 0; i < numentries; i++){
3066
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
3067
if(ret == -1){
3068
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
3069
" \"%s\", 0): %s\n", tempdir,
3070
direntries[i]->d_name, strerror(errno));
3071
}
3072
free(direntries[i]);
3073
}
3074
3075
/* need to clean even if 0 because man page doesn't specify */
3076
free(direntries);
3077
if(numentries == -1){
3078
perror_plus("scandir");
3079
}
3080
ret = rmdir(tempdir);
3081
if(ret == -1 and errno != ENOENT){
3082
perror_plus("rmdir");
3083
}
3084
}
3085
TEMP_FAILURE_RETRY(close(tempdir_fd));
3086
}
3109
clean_dir_at(-1, tempdir, 0);
3087
3110
}
3088
3111
3089
3112
if(quit_now){
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