57
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
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inet_pton(), connect(),
60
#include <fcntl.h> /* open(), unlinkat() */
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#include <fcntl.h> /* open(), unlinkat(), AT_REMOVEDIR */
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#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,
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program_invocation_short_name */
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#include <time.h> /* nanosleep(), time(), sleep() */
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#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
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fprintf_plus(stderr, "GnuTLS: %s", string);
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__attribute__((nonnull, warn_unused_result))
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__attribute__((nonnull(1, 2, 4), warn_unused_result))
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static int init_gnutls_global(const char *pubkeyfilename,
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const char *seckeyfilename,
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const char *dhparamsfilename,
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/* Set effective uid to 0, return errno */
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__attribute__((warn_unused_result))
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error_t raise_privileges(void){
826
error_t old_errno = errno;
827
error_t ret_errno = 0;
820
int raise_privileges(void){
821
int old_errno = errno;
828
823
if(seteuid(0) == -1){
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errno = old_errno;
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830
/* Set effective and real user ID to 0. Return errno. */
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__attribute__((warn_unused_result))
837
error_t raise_privileges_permanently(void){
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error_t old_errno = errno;
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error_t ret_errno = raise_privileges();
832
int raise_privileges_permanently(void){
833
int old_errno = errno;
834
int ret = raise_privileges();
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836
errno = old_errno;
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839
if(setuid(0) == -1){
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842
errno = old_errno;
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846
/* Set effective user ID to unprivileged saved user ID */
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__attribute__((warn_unused_result))
853
error_t lower_privileges(void){
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error_t old_errno = errno;
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error_t ret_errno = 0;
848
int lower_privileges(void){
849
int old_errno = errno;
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if(seteuid(uid) == -1){
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errno = old_errno;
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/* Lower privileges permanently */
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__attribute__((warn_unused_result))
865
error_t lower_privileges_permanently(void){
866
error_t old_errno = errno;
867
error_t ret_errno = 0;
860
int lower_privileges_permanently(void){
861
int old_errno = errno;
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if(setuid(uid) == -1){
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866
errno = old_errno;
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870
/* Helper function to add_local_route() and delete_local_route() */
1627
1623
__attribute__((nonnull, warn_unused_result))
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1624
bool get_flags(const char *ifname, struct ifreq *ifr){
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int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
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perror_plus("socket");
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strcpy(ifr->ifr_name, ifname);
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strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
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ifr->ifr_name[IF_NAMESIZE-1] = '\0'; /* NUL terminate */
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ret = ioctl(s, SIOCGIFFLAGS, ifr);
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perror_plus("ioctl SIOCGIFFLAGS");
1916
#if __GLIBC_PREREQ(2, 15)
1917
1912
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1918
1913
runnable_hook, alphasort);
1919
#else /* not __GLIBC_PREREQ(2, 15) */
1920
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1922
#endif /* not __GLIBC_PREREQ(2, 15) */
1923
#else /* not __GLIBC__ */
1924
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1926
#endif /* not __GLIBC__ */
1927
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if(numhooks == -1){
1928
1915
perror_plus("scandir");
2288
2277
int main(int argc, char *argv[]){
2289
2278
mandos_context mc = { .server = NULL, .dh_bits = 0,
2290
.priority = "SECURE256:!CTYPE-X.509:"
2291
"+CTYPE-OPENPGP:!RSA", .current_server = NULL,
2292
.interfaces = NULL, .interfaces_size = 0 };
2279
.priority = "SECURE256:!CTYPE-X.509"
2280
":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
2281
.current_server = NULL, .interfaces = NULL,
2282
.interfaces_size = 0 };
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AvahiSServiceBrowser *sb = NULL;
2294
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error_t ret_errno;
2476
2466
.args_doc = "",
2477
2467
.doc = "Mandos client -- Get and decrypt"
2478
2468
" passwords from a Mandos server" };
2479
ret = argp_parse(&argp, argc, argv,
2480
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2469
ret_errno = argp_parse(&argp, argc, argv,
2470
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2487
2477
perror_plus("argp_parse");
2488
2478
exitcode = EX_OSERR;
3040
3030
free(interfaces_to_take_down);
3041
3031
free(interfaces_hooks);
3033
void clean_dir_at(int base, const char * const dirname,
3035
struct dirent **direntries = NULL;
3037
int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3043
perror_plus("open");
3045
int numentries = scandirat(dir_fd, ".", &direntries,
3046
notdotentries, alphasort);
3047
if(numentries >= 0){
3048
for(int i = 0; i < numentries; i++){
3050
fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3051
dirname, direntries[i]->d_name);
3053
dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3055
if(errno == EISDIR){
3056
dret = unlinkat(dir_fd, direntries[i]->d_name,
3059
if((dret == -1) and (errno == ENOTEMPTY)
3060
and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3061
== 0) and (level == 0)){
3062
/* Recurse only in this special case */
3063
clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3067
fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3068
direntries[i]->d_name, strerror(errno));
3071
free(direntries[i]);
3074
/* need to clean even if 0 because man page doesn't specify */
3076
if(numentries == -1){
3077
perror_plus("scandirat");
3079
dret = unlinkat(base, dirname, AT_REMOVEDIR);
3080
if(dret == -1 and errno != ENOENT){
3081
perror_plus("rmdir");
3084
perror_plus("scandirat");
3043
3089
/* Removes the GPGME temp directory and all files inside */
3044
3090
if(tempdir != NULL){
3045
struct dirent **direntries = NULL;
3046
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY
3050
if(tempdir_fd == -1){
3051
perror_plus("open");
3054
#if __GLIBC_PREREQ(2, 15)
3055
int numentries = scandirat(tempdir_fd, ".", &direntries,
3056
notdotentries, alphasort);
3057
#else /* not __GLIBC_PREREQ(2, 15) */
3058
int numentries = scandir(tempdir, &direntries, notdotentries,
3060
#endif /* not __GLIBC_PREREQ(2, 15) */
3061
#else /* not __GLIBC__ */
3062
int numentries = scandir(tempdir, &direntries, notdotentries,
3064
#endif /* not __GLIBC__ */
3065
if(numentries >= 0){
3066
for(int i = 0; i < numentries; i++){
3067
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
3069
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
3070
" \"%s\", 0): %s\n", tempdir,
3071
direntries[i]->d_name, strerror(errno));
3073
free(direntries[i]);
3076
/* need to clean even if 0 because man page doesn't specify */
3078
if(numentries == -1){
3079
perror_plus("scandir");
3081
ret = rmdir(tempdir);
3082
if(ret == -1 and errno != ENOENT){
3083
perror_plus("rmdir");
3086
TEMP_FAILURE_RETRY(close(tempdir_fd));
3091
clean_dir_at(-1, tempdir, 0);