35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
51
#include <inttypes.h> /* PRIu16 */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
55
#include <assert.h> /* assert() */
56
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
44
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
SIOCSIFFLAGS, if_indextoname(),
60
if_nametoindex(), IF_NAMESIZE */
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
getuid(), getgid(), setuid(),
64
#include <netinet/in.h>
65
#include <arpa/inet.h> /* inet_pton(), htons */
66
#include <iso646.h> /* not, and */
67
#include <argp.h> /* struct argp_option, error_t, struct
68
argp_state, struct argp,
69
argp_parse(), ARGP_KEY_ARG,
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
73
/* All Avahi types, constants and functions
47
76
#include <avahi-core/core.h>
48
77
#include <avahi-core/lookup.h>
49
78
#include <avahi-core/log.h>
51
80
#include <avahi-common/malloc.h>
52
81
#include <avahi-common/error.h>
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
86
init_gnutls_session(),
88
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
89
GNUTLS_OPENPGP_FMT_BASE64 */
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
72
#include <errno.h> /* perror() */
92
#include <gpgme.h> /* All GPGME types, constants and functions
94
GPGME_PROTOCOL_OpenPGP,
75
97
#define BUFFER_SIZE 256
77
99
bool debug = false;
78
100
static const char *keydir = "/conf/conf.d/mandos";
79
101
static const char mandos_protocol_version[] = "1";
80
const char *argp_program_version = "mandosclient 0.9";
102
const char *argp_program_version = "password-request 1.0";
81
103
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
83
105
/* Used for passing in values through the Avahi callback functions */
206
228
fprintf(stderr, "Unsupported algorithm: %s\n",
207
229
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
230
fprintf(stderr, "Wrong key usage: %u\n",
209
231
result->wrong_key_usage);
210
232
if(result->file_name != NULL){
211
233
fprintf(stderr, "File name: %s\n", result->file_name);
463
485
fprintf(stderr, "Bad address: %s\n", ip);
466
to.in6.sin6_port = htons(port); /* Spurious warning */
488
to.in6.sin6_port = htons(port); /* Spurious warning */
468
490
to.in6.sin6_scope_id = (uint32_t)if_index;
471
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
493
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
472
495
char addrstr[INET6_ADDRSTRLEN] = "";
473
496
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
474
497
sizeof(addrstr)) == NULL){
649
676
char ip[AVAHI_ADDRESS_STR_MAX];
650
677
avahi_address_snprint(ip, sizeof(ip), address);
652
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
653
" port %d\n", name, host_name, ip, interface, port);
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
680
PRIu16 ") on port %d\n", name, host_name, ip,
655
683
int ret = start_mandos_communication(ip, port, interface, mc);
685
avahi_simple_poll_quit(mc->simple_poll);
836
863
.doc = "Mandos client -- Get and decrypt"
837
864
" passwords from mandos server" };
838
argp_parse (&argp, argc, argv, 0, 0, NULL);
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unknown error while parsing arguments\n");
868
exitcode = EXIT_FAILURE;
841
873
pubkeyfile = combinepath(keydir, pubkeyfile);
848
880
seckeyfile = combinepath(keydir, seckeyfile);
849
881
if (seckeyfile == NULL){
850
882
perror("combinepath");
883
exitcode = EXIT_FAILURE;
854
887
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
856
fprintf(stderr, "init_gnutls_global\n");
889
fprintf(stderr, "init_gnutls_global failed\n");
890
exitcode = EXIT_FAILURE;
859
893
gnutls_initalized = true;
896
/* If the interface is down, bring it up */
898
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
901
exitcode = EXIT_FAILURE;
904
strcpy(network.ifr_name, interface); /* Spurious warning */
905
ret = ioctl(sd, SIOCGIFFLAGS, &network);
907
perror("ioctl SIOCGIFFLAGS");
908
exitcode = EXIT_FAILURE;
911
if((network.ifr_flags & IFF_UP) == 0){
912
network.ifr_flags |= IFF_UP;
913
ret = ioctl(sd, SIOCSIFFLAGS, &network);
915
perror("ioctl SIOCSIFFLAGS");
916
exitcode = EXIT_FAILURE;
865
926
ret = setuid(uid);
867
928
perror("setuid");
908
/* If the interface is down, bring it up */
910
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
913
exitcode = EXIT_FAILURE;
916
strcpy(network.ifr_name, interface); /* Spurious warning */
917
ret = ioctl(sd, SIOCGIFFLAGS, &network);
919
perror("ioctl SIOCGIFFLAGS");
920
exitcode = EXIT_FAILURE;
923
if((network.ifr_flags & IFF_UP) == 0){
924
network.ifr_flags |= IFF_UP;
925
ret = ioctl(sd, SIOCSIFFLAGS, &network);
927
perror("ioctl SIOCSIFFLAGS");
928
exitcode = EXIT_FAILURE;
936
970
avahi_set_log_function(empty_log);