47
47
strtof(), abort() */
48
48
#include <stdbool.h> /* bool, false, true */
49
49
#include <string.h> /* strcmp(), strlen(), strerror(),
50
asprintf(), strncpy(), strsignal()
50
asprintf(), strcpy() */
52
51
#include <sys/ioctl.h> /* ioctl */
53
52
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
54
53
sockaddr_in6, PF_INET6,
58
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
59
58
inet_pton(), connect(),
61
#include <fcntl.h> /* open(), unlinkat(), AT_REMOVEDIR */
60
#include <fcntl.h> /* open(), unlinkat() */
62
61
#include <dirent.h> /* opendir(), struct dirent, readdir()
64
63
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
66
#include <errno.h> /* perror(), errno, EINTR, EINVAL,
67
EAI_SYSTEM, ENETUNREACH,
68
EHOSTUNREACH, ECONNREFUSED, EPROTO,
69
EIO, ENOENT, ENXIO, ENOMEM, EISDIR,
65
#include <errno.h> /* perror(), errno,
71
66
program_invocation_short_name */
72
67
#include <time.h> /* nanosleep(), time(), sleep() */
73
68
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
518
513
fprintf_plus(stderr, "GnuTLS: %s", string);
521
__attribute__((nonnull(1, 2, 4), warn_unused_result))
516
__attribute__((nonnull, warn_unused_result))
522
517
static int init_gnutls_global(const char *pubkeyfilename,
523
518
const char *seckeyfilename,
524
519
const char *dhparamsfilename,
819
823
/* Set effective uid to 0, return errno */
820
824
__attribute__((warn_unused_result))
821
int raise_privileges(void){
822
int old_errno = errno;
825
error_t raise_privileges(void){
826
error_t old_errno = errno;
827
error_t ret_errno = 0;
824
828
if(seteuid(0) == -1){
827
831
errno = old_errno;
831
835
/* Set effective and real user ID to 0. Return errno. */
832
836
__attribute__((warn_unused_result))
833
int raise_privileges_permanently(void){
834
int old_errno = errno;
835
int ret = raise_privileges();
837
error_t raise_privileges_permanently(void){
838
error_t old_errno = errno;
839
error_t ret_errno = raise_privileges();
837
841
errno = old_errno;
840
844
if(setuid(0) == -1){
843
847
errno = old_errno;
847
851
/* Set effective user ID to unprivileged saved user ID */
848
852
__attribute__((warn_unused_result))
849
int lower_privileges(void){
850
int old_errno = errno;
853
error_t lower_privileges(void){
854
error_t old_errno = errno;
855
error_t ret_errno = 0;
852
856
if(seteuid(uid) == -1){
855
859
errno = old_errno;
859
863
/* Lower privileges permanently */
860
864
__attribute__((warn_unused_result))
861
int lower_privileges_permanently(void){
862
int old_errno = errno;
865
error_t lower_privileges_permanently(void){
866
error_t old_errno = errno;
867
error_t ret_errno = 0;
864
868
if(setuid(uid) == -1){
867
871
errno = old_errno;
871
875
/* Helper function to add_local_route() and delete_local_route() */
1635
1628
__attribute__((nonnull, warn_unused_result))
1636
1629
bool get_flags(const char *ifname, struct ifreq *ifr){
1640
1633
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1643
1636
perror_plus("socket");
1647
strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
1648
ifr->ifr_name[IF_NAMESIZE-1] = '\0'; /* NUL terminate */
1640
strcpy(ifr->ifr_name, ifname);
1649
1641
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1653
1645
perror_plus("ioctl SIOCGIFFLAGS");
1917
#if __GLIBC_PREREQ(2, 15)
1924
1918
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1925
1919
runnable_hook, alphasort);
1920
#else /* not __GLIBC_PREREQ(2, 15) */
1921
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1923
#endif /* not __GLIBC_PREREQ(2, 15) */
1924
#else /* not __GLIBC__ */
1925
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1927
#endif /* not __GLIBC__ */
1926
1928
if(numhooks == -1){
1927
1929
perror_plus("scandir");
2478
2478
.args_doc = "",
2479
2479
.doc = "Mandos client -- Get and decrypt"
2480
2480
" passwords from a Mandos server" };
2481
ret_errno = argp_parse(&argp, argc, argv,
2482
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2481
ret = argp_parse(&argp, argc, argv,
2482
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2489
2489
perror_plus("argp_parse");
2490
2490
exitcode = EX_OSERR;
3048
3043
free(interfaces_to_take_down);
3049
3044
free(interfaces_hooks);
3051
void clean_dir_at(int base, const char * const dirname,
3053
struct dirent **direntries = NULL;
3055
int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3061
perror_plus("open");
3063
int numentries = scandirat(dir_fd, ".", &direntries,
3064
notdotentries, alphasort);
3065
if(numentries >= 0){
3066
for(int i = 0; i < numentries; i++){
3068
fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3069
dirname, direntries[i]->d_name);
3071
dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3073
if(errno == EISDIR){
3074
dret = unlinkat(dir_fd, direntries[i]->d_name,
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);
3085
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3086
direntries[i]->d_name, strerror(errno));
3089
free(direntries[i]);
3092
/* need to clean even if 0 because man page doesn't specify */
3094
if(numentries == -1){
3095
perror_plus("scandirat");
3097
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3098
if(dret == -1 and errno != ENOENT){
3099
perror_plus("rmdir");
3102
perror_plus("scandirat");
3107
3046
/* Removes the GPGME temp directory and all files inside */
3108
3047
if(tempdir != NULL){
3109
clean_dir_at(-1, tempdir, 0);
3048
struct dirent **direntries = NULL;
3049
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY
3053
if(tempdir_fd == -1){
3054
perror_plus("open");
3057
#if __GLIBC_PREREQ(2, 15)
3058
int numentries = scandirat(tempdir_fd, ".", &direntries,
3059
notdotentries, alphasort);
3060
#else /* not __GLIBC_PREREQ(2, 15) */
3061
int numentries = scandir(tempdir, &direntries, notdotentries,
3063
#endif /* not __GLIBC_PREREQ(2, 15) */
3064
#else /* not __GLIBC__ */
3065
int numentries = scandir(tempdir, &direntries, notdotentries,
3067
#endif /* not __GLIBC__ */
3068
if(numentries >= 0){
3069
for(int i = 0; i < numentries; i++){
3070
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
3072
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
3073
" \"%s\", 0): %s\n", tempdir,
3074
direntries[i]->d_name, strerror(errno));
3076
free(direntries[i]);
3079
/* need to clean even if 0 because man page doesn't specify */
3081
if(numentries == -1){
3082
perror_plus("scandir");
3084
ret = rmdir(tempdir);
3085
if(ret == -1 and errno != ENOENT){
3086
perror_plus("rmdir");