9
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* "browse_callback", and parts of "main".
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11
* Everything else is
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* Copyright © 2008-2016 Teddy Hogeborn
13
* Copyright © 2008-2016 Björn Påhlsson
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* This program is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
17
* published by the Free Software Foundation, either version 3 of the
18
* License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful, but
12
* Copyright © 2008-2018 Teddy Hogeborn
13
* Copyright © 2008-2018 Björn Påhlsson
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* This file is part of Mandos.
17
* Mandos is free software: you can redistribute it and/or modify it
18
* under the terms of the GNU General Public License as published by
19
* the Free Software Foundation, either version 3 of the License, or
20
* (at your option) any later version.
22
* Mandos is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
22
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23
25
* General Public License for more details.
25
27
* You should have received a copy of the GNU General Public License
26
* along with this program. If not, see
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* <http://www.gnu.org/licenses/>.
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* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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* Contact the authors at <mandos@recompile.se>.
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#include <sys/socket.h> /* socket(), struct sockaddr_in6,
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inet_pton(), connect(),
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#include <fcntl.h> /* open(), unlinkat() */
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#include <fcntl.h> /* open(), unlinkat(), AT_REMOVEDIR */
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63
#include <dirent.h> /* opendir(), struct dirent, readdir()
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#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
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#include <errno.h> /* perror(), errno,
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#include <errno.h> /* perror(), errno, EINTR, EINVAL,
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EAI_SYSTEM, ENETUNREACH,
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EHOSTUNREACH, ECONNREFUSED, EPROTO,
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EIO, ENOENT, ENXIO, ENOMEM, EISDIR,
66
72
program_invocation_short_name */
67
73
#include <time.h> /* nanosleep(), time(), sleep() */
68
74
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
304
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gpgme_strsource(rc), gpgme_strerror(rc));
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gpgme_import_result_t import_result
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= gpgme_op_import_result(mc->ctx);
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if((import_result->imported < 1
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or import_result->not_imported > 0)
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and import_result->unchanged == 0){
319
fprintf_plus(stderr, "bad gpgme_op_import_results:\n");
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"The total number of considered keys: %d\n",
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import_result->considered);
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"The number of keys without user ID: %d\n",
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import_result->no_user_id);
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"The total number of imported keys: %d\n",
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import_result->imported);
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fprintf_plus(stderr, "The number of imported RSA keys: %d\n",
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import_result->imported_rsa);
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fprintf_plus(stderr, "The number of unchanged keys: %d\n",
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import_result->unchanged);
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fprintf_plus(stderr, "The number of new user IDs: %d\n",
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import_result->new_user_ids);
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fprintf_plus(stderr, "The number of new sub keys: %d\n",
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import_result->new_sub_keys);
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fprintf_plus(stderr, "The number of new signatures: %d\n",
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import_result->new_signatures);
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fprintf_plus(stderr, "The number of new revocations: %d\n",
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import_result->new_revocations);
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"The total number of secret keys read: %d\n",
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import_result->secret_read);
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"The number of imported secret keys: %d\n",
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import_result->secret_imported);
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"The number of unchanged secret keys: %d\n",
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import_result->secret_unchanged);
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fprintf_plus(stderr, "The number of keys not imported: %d\n",
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import_result->not_imported);
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for(gpgme_import_status_t import_status
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= import_result->imports;
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import_status != NULL;
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import_status = import_status->next){
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fprintf_plus(stderr, "Import status for key: %s\n",
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if(import_status->result != GPG_ERR_NO_ERROR){
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fprintf_plus(stderr, "Import result: %s: %s\n",
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gpgme_strsource(import_status->result),
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gpgme_strerror(import_status->result));
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fprintf_plus(stderr, "Key status:\n");
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import_status->status & GPGME_IMPORT_NEW
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? "The key was new.\n"
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: "The key was not new.\n");
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import_status->status & GPGME_IMPORT_UID
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? "The key contained new user IDs.\n"
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: "The key did not contain new user IDs.\n");
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import_status->status & GPGME_IMPORT_SIG
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? "The key contained new signatures.\n"
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: "The key did not contain new signatures.\n");
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import_status->status & GPGME_IMPORT_SUBKEY
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? "The key contained new sub keys.\n"
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: "The key did not contain new sub keys.\n");
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import_status->status & GPGME_IMPORT_SECRET
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? "The key contained a secret key.\n"
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: "The key did not contain a secret key.\n");
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if(result == NULL){
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fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
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fprintf_plus(stderr, "Unsupported algorithm: %s\n",
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result->unsupported_algorithm);
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fprintf_plus(stderr, "Wrong key usage: %u\n",
420
result->wrong_key_usage);
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if(result->unsupported_algorithm != NULL) {
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fprintf_plus(stderr, "Unsupported algorithm: %s\n",
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result->unsupported_algorithm);
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fprintf_plus(stderr, "Wrong key usage: %s\n",
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result->wrong_key_usage ? "Yes" : "No");
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if(result->file_name != NULL){
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fprintf_plus(stderr, "File name: %s\n", result->file_name);
823
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/* Set effective uid to 0, return errno */
824
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__attribute__((warn_unused_result))
825
error_t raise_privileges(void){
826
error_t old_errno = errno;
827
error_t ret_errno = 0;
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int raise_privileges(void){
903
int old_errno = errno;
828
905
if(seteuid(0) == -1){
831
908
errno = old_errno;
835
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/* Set effective and real user ID to 0. Return errno. */
836
913
__attribute__((warn_unused_result))
837
error_t raise_privileges_permanently(void){
838
error_t old_errno = errno;
839
error_t ret_errno = raise_privileges();
914
int raise_privileges_permanently(void){
915
int old_errno = errno;
916
int ret = raise_privileges();
841
918
errno = old_errno;
844
921
if(setuid(0) == -1){
847
924
errno = old_errno;
851
928
/* Set effective user ID to unprivileged saved user ID */
852
929
__attribute__((warn_unused_result))
853
error_t lower_privileges(void){
854
error_t old_errno = errno;
855
error_t ret_errno = 0;
930
int lower_privileges(void){
931
int old_errno = errno;
856
933
if(seteuid(uid) == -1){
859
936
errno = old_errno;
863
940
/* Lower privileges permanently */
864
941
__attribute__((warn_unused_result))
865
error_t lower_privileges_permanently(void){
866
error_t old_errno = errno;
867
error_t ret_errno = 0;
942
int lower_privileges_permanently(void){
943
int old_errno = errno;
868
945
if(setuid(uid) == -1){
871
948
errno = old_errno;
875
952
/* Helper function to add_local_route() and delete_local_route() */
1918
#if __GLIBC_PREREQ(2, 15)
2015
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
2017
perror_plus("open(\"/dev/null\", O_RDONLY)");
1919
2020
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1920
2021
runnable_hook, alphasort);
1921
#else /* not __GLIBC_PREREQ(2, 15) */
1922
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1924
#endif /* not __GLIBC_PREREQ(2, 15) */
1925
#else /* not __GLIBC__ */
1926
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1928
#endif /* not __GLIBC__ */
1929
2022
if(numhooks == -1){
1930
2023
perror_plus("scandir");
1933
2027
struct dirent *direntry;
1935
int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
1937
perror_plus("open(\"/dev/null\", O_RDONLY)");
1940
2029
for(int i = 0; i < numhooks; i++){
1941
2030
direntry = direntries[i];
2479
2570
.args_doc = "",
2480
2571
.doc = "Mandos client -- Get and decrypt"
2481
2572
" passwords from a Mandos server" };
2482
ret = argp_parse(&argp, argc, argv,
2483
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2573
ret_errno = argp_parse(&argp, argc, argv,
2574
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2490
2581
perror_plus("argp_parse");
2491
2582
exitcode = EX_OSERR;
3044
3140
free(interfaces_to_take_down);
3045
3141
free(interfaces_hooks);
3143
void clean_dir_at(int base, const char * const dirname,
3145
struct dirent **direntries = NULL;
3147
int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3153
perror_plus("open");
3156
int numentries = scandirat(dir_fd, ".", &direntries,
3157
notdotentries, alphasort);
3158
if(numentries >= 0){
3159
for(int i = 0; i < numentries; i++){
3161
fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3162
dirname, direntries[i]->d_name);
3164
dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3166
if(errno == EISDIR){
3167
dret = unlinkat(dir_fd, direntries[i]->d_name,
3170
if((dret == -1) and (errno == ENOTEMPTY)
3171
and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3172
== 0) and (level == 0)){
3173
/* Recurse only in this special case */
3174
clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3177
if((dret == -1) and (errno != ENOENT)){
3178
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3179
direntries[i]->d_name, strerror(errno));
3182
free(direntries[i]);
3185
/* need to clean even if 0 because man page doesn't specify */
3187
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3188
if(dret == -1 and errno != ENOENT){
3189
perror_plus("rmdir");
3192
perror_plus("scandirat");
3047
3197
/* Removes the GPGME temp directory and all files inside */
3048
3198
if(tempdir != NULL){
3049
struct dirent **direntries = NULL;
3050
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY
3054
if(tempdir_fd == -1){
3055
perror_plus("open");
3058
#if __GLIBC_PREREQ(2, 15)
3059
int numentries = scandirat(tempdir_fd, ".", &direntries,
3060
notdotentries, alphasort);
3061
#else /* not __GLIBC_PREREQ(2, 15) */
3062
int numentries = scandir(tempdir, &direntries, notdotentries,
3064
#endif /* not __GLIBC_PREREQ(2, 15) */
3065
#else /* not __GLIBC__ */
3066
int numentries = scandir(tempdir, &direntries, notdotentries,
3068
#endif /* not __GLIBC__ */
3069
if(numentries >= 0){
3070
for(int i = 0; i < numentries; i++){
3071
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
3073
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
3074
" \"%s\", 0): %s\n", tempdir,
3075
direntries[i]->d_name, strerror(errno));
3077
free(direntries[i]);
3080
/* need to clean even if 0 because man page doesn't specify */
3082
if(numentries == -1){
3083
perror_plus("scandir");
3085
ret = rmdir(tempdir);
3086
if(ret == -1 and errno != ENOENT){
3087
perror_plus("rmdir");
3199
clean_dir_at(-1, tempdir, 0);