eapol_test.c

一个Linux下无线网卡的设置工具

		wpa_hexdump(MSG_DEBUG, "Decapsulated EAP packet", eap, len);
		break;
	}
	wpa_printf(MSG_DEBUG, "decapsulated EAP packet (code=%d "
		       "id=%d len=%d) from RADIUS server: %s",
		      hdr->code, hdr->identifier, ntohs(hdr->length), buf);

	/* sta->eapol_sm->be_auth.idFromServer = hdr->identifier; */

	free(e->last_eap_radius);
	e->last_eap_radius = eap;
	e->last_eap_radius_len = len;

	{
		struct ieee802_1x_hdr *hdr;
		hdr = malloc(sizeof(*hdr) + len);
		assert(hdr != NULL);
		hdr->version = EAPOL_VERSION;
		hdr->type = IEEE802_1X_TYPE_EAP_PACKET;
		hdr->length = htons(len);
		memcpy((u8 *) (hdr + 1), eap, len);
		eapol_sm_rx_eapol(e->wpa_s->eapol, e->wpa_s->bssid,
				  (u8 *) hdr, sizeof(*hdr) + len);
		free(hdr);
	}
}


static void ieee802_1x_get_keys(struct eapol_test_data *e,
				struct radius_msg *msg, struct radius_msg *req,
				u8 *shared_secret, size_t shared_secret_len)
{
	struct radius_ms_mppe_keys *keys;

	keys = radius_msg_get_ms_keys(msg, req, shared_secret,
				      shared_secret_len);
	if (keys && keys->send == NULL && keys->recv == NULL) {
		free(keys);
		keys = radius_msg_get_cisco_keys(msg, req, shared_secret,
						 shared_secret_len);
	}

	if (keys) {
		if (keys->send) {
			wpa_hexdump(MSG_DEBUG, "MS-MPPE-Send-Key (sign)",
				    keys->send, keys->send_len);
		}
		if (keys->recv) {
			wpa_hexdump(MSG_DEBUG, "MS-MPPE-Recv-Key (crypt)",
				    keys->recv, keys->recv_len);
			e->authenticator_pmk_len =
				keys->recv_len > PMK_LEN ? PMK_LEN :
				keys->recv_len;
			memcpy(e->authenticator_pmk, keys->recv,
			       e->authenticator_pmk_len);
		}

		free(keys->send);
		free(keys->recv);
		free(keys);
	}
}


/* Process the RADIUS frames from Authentication Server */
static RadiusRxResult
ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
			u8 *shared_secret, size_t shared_secret_len,
			void *data)
{
	struct eapol_test_data *e = data;

	/* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
	 * present when packet contains an EAP-Message attribute */
	if (msg->hdr->code == RADIUS_CODE_ACCESS_REJECT &&
	    radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
				0) < 0 &&
	    radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
		wpa_printf(MSG_DEBUG, "Allowing RADIUS "
			      "Access-Reject without Message-Authenticator "
			      "since it does not include EAP-Message\n");
	} else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
				     req, 1)) {
		printf("Incoming RADIUS packet did not have correct "
		       "Message-Authenticator - dropped\n");
		return RADIUS_RX_UNKNOWN;
	}

	if (msg->hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
	    msg->hdr->code != RADIUS_CODE_ACCESS_REJECT &&
	    msg->hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
		printf("Unknown RADIUS message code\n");
		return RADIUS_RX_UNKNOWN;
	}

	e->radius_identifier = -1;
	wpa_printf(MSG_DEBUG, "RADIUS packet matching with station");

	if (e->last_recv_radius) {
		radius_msg_free(e->last_recv_radius);
		free(e->last_recv_radius);
	}

	e->last_recv_radius = msg;

	switch (msg->hdr->code) {
	case RADIUS_CODE_ACCESS_ACCEPT:
		e->radius_access_accept_received = 1;
		ieee802_1x_get_keys(e, msg, req, shared_secret,
				    shared_secret_len);
		break;
	case RADIUS_CODE_ACCESS_REJECT:
		e->radius_access_reject_received = 1;
		break;
	}

	ieee802_1x_decapsulate_radius(e);

	if ((msg->hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
	     e->eapol_test_num_reauths < 0) ||
	    msg->hdr->code == RADIUS_CODE_ACCESS_REJECT) {
		eloop_terminate();
	}

	return RADIUS_RX_QUEUED;
}


static void wpa_init_conf(struct eapol_test_data *e,
			  struct wpa_supplicant *wpa_s, const char *authsrv,
			  int port, const char *secret)
{
	struct hostapd_radius_server *as;
	int res;

	wpa_s->bssid[5] = 1;
	wpa_s->own_addr[5] = 2;
	e->own_ip_addr.s_addr = htonl((127 << 24) | 1);
	strncpy(wpa_s->ifname, "test", sizeof(wpa_s->ifname));

	e->radius_conf = malloc(sizeof(struct hostapd_radius_servers));
	assert(e->radius_conf != NULL);
	memset(e->radius_conf, 0, sizeof(struct hostapd_radius_servers));
	e->radius_conf->num_auth_servers = 1;
	as = malloc(sizeof(struct hostapd_radius_server));
	assert(as != NULL);
	memset(as, 0, sizeof(*as));
#ifdef CONFIG_NATIVE_WINDOWS
	{
		int a[4];
		u8 *pos;
		sscanf(authsrv, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]);
		pos = (u8 *) &as->addr.u.v4;
		*pos++ = a[0];
		*pos++ = a[1];
		*pos++ = a[2];
		*pos++ = a[3];
	}
#else /* CONFIG_NATIVE_WINDOWS */
	inet_aton(authsrv, &as->addr.u.v4);
#endif /* CONFIG_NATIVE_WINDOWS */
	as->addr.af = AF_INET;
	as->port = port;
	as->shared_secret = (u8 *) strdup(secret);
	as->shared_secret_len = strlen(secret);
	e->radius_conf->auth_server = as;
	e->radius_conf->auth_servers = as;
	e->radius_conf->msg_dumps = 1;

	e->radius = radius_client_init(wpa_s, e->radius_conf);
	assert(e->radius != NULL);

	res = radius_client_register(e->radius, RADIUS_AUTH,
				     ieee802_1x_receive_auth, e);
	assert(res == 0);
}


static int scard_test(void)
{
	struct scard_data *scard;
	size_t len;
	char imsi[20];
	unsigned char rand[16];
#ifdef PCSC_FUNCS
	unsigned char sres[4];
	unsigned char kc[8];
#endif /* PCSC_FUNCS */
#define num_triplets 5
	unsigned char rand_[num_triplets][16];
	unsigned char sres_[num_triplets][4];
	unsigned char kc_[num_triplets][8];
	int i, j, res;

#define AKA_RAND_LEN 16
#define AKA_AUTN_LEN 16
#define AKA_AUTS_LEN 14
#define RES_MAX_LEN 16
#define IK_LEN 16
#define CK_LEN 16
	unsigned char aka_rand[AKA_RAND_LEN];
	unsigned char aka_autn[AKA_AUTN_LEN];
	unsigned char aka_auts[AKA_AUTS_LEN];
	unsigned char aka_res[RES_MAX_LEN];
	size_t aka_res_len;
	unsigned char aka_ik[IK_LEN];
	unsigned char aka_ck[CK_LEN];

	scard = scard_init(SCARD_TRY_BOTH);
	if (scard == NULL)
		return -1;
	if (scard_set_pin(scard, "1234")) {
		wpa_printf(MSG_WARNING, "PIN validation failed");
		scard_deinit(scard);
		return -1;
	}

	len = sizeof(imsi);
	if (scard_get_imsi(scard, imsi, &len))
		goto failed;
	wpa_hexdump_ascii(MSG_DEBUG, "SCARD: IMSI", (u8 *) imsi, len);
	/* NOTE: Permanent Username: 1 | IMSI */

	memset(rand, 0, sizeof(rand));
	if (scard_gsm_auth(scard, rand, sres, kc))
		goto failed;

	memset(rand, 0xff, sizeof(rand));
	if (scard_gsm_auth(scard, rand, sres, kc))
		goto failed;

	for (i = 0; i < num_triplets; i++) {
		memset(rand_[i], i, sizeof(rand_[i]));
		if (scard_gsm_auth(scard, rand_[i], sres_[i], kc_[i]))
			goto failed;
	}

	for (i = 0; i < num_triplets; i++) {
		printf("1");
		for (j = 0; j < len; j++)
			printf("%c", imsi[j]);
		printf(",");
		for (j = 0; j < 16; j++)
			printf("%02X", rand_[i][j]);
		printf(",");
		for (j = 0; j < 4; j++)
			printf("%02X", sres_[i][j]);
		printf(",");
		for (j = 0; j < 8; j++)
			printf("%02X", kc_[i][j]);
		printf("\n");
	}

	wpa_printf(MSG_DEBUG, "Trying to use UMTS authentication");

	/* seq 39 (0x28) */
	memset(aka_rand, 0xaa, 16);
	memcpy(aka_autn, "\x86\x71\x31\xcb\xa2\xfc\x61\xdf"
	       "\xa3\xb3\x97\x9d\x07\x32\xa2\x12", 16);

	res = scard_umts_auth(scard, aka_rand, aka_autn, aka_res, &aka_res_len,
			      aka_ik, aka_ck, aka_auts);
	if (res == 0) {
		wpa_printf(MSG_DEBUG, "UMTS auth completed successfully");
		wpa_hexdump(MSG_DEBUG, "RES", aka_res, aka_res_len);
		wpa_hexdump(MSG_DEBUG, "IK", aka_ik, IK_LEN);
		wpa_hexdump(MSG_DEBUG, "CK", aka_ck, CK_LEN);
	} else if (res == -2) {
		wpa_printf(MSG_DEBUG, "UMTS auth resulted in synchronization "
			   "failure");
		wpa_hexdump(MSG_DEBUG, "AUTS", aka_auts, AKA_AUTS_LEN);
	} else {
		wpa_printf(MSG_DEBUG, "UMTS auth failed");
	}

failed:
	scard_deinit(scard);

	return 0;
#undef num_triplets
}


static int scard_get_triplets(int argc, char *argv[])
{
	struct scard_data *scard;
	size_t len;
	char imsi[20];
	unsigned char rand[16];
	unsigned char sres[4];
	unsigned char kc[8];
	int num_triplets;
	int i, j;

	if (argc < 2 || ((num_triplets = atoi(argv[1])) <= 0)) {
		printf("invalid parameters for sim command\n");
		return -1;
	}

	if (argc <= 2 || strcmp(argv[2], "debug") != 0) {
		/* disable debug output */
		wpa_debug_level = 99;
	}

	scard = scard_init(SCARD_GSM_SIM_ONLY);
	if (scard == NULL) {
		printf("Failed to open smartcard connection\n");
		return -1;
	}
	if (scard_set_pin(scard, argv[0])) {
		wpa_printf(MSG_WARNING, "PIN validation failed");
		scard_deinit(scard);
		return -1;
	}

	len = sizeof(imsi);
	if (scard_get_imsi(scard, imsi, &len)) {
		scard_deinit(scard);
		return -1;
	}

	for (i = 0; i < num_triplets; i++) {
		memset(rand, i, sizeof(rand));
		if (scard_gsm_auth(scard, rand, sres, kc))
			break;

		/* IMSI:Kc:SRES:RAND */
		for (j = 0; j < len; j++)
			printf("%c", imsi[j]);
		printf(":");
		for (j = 0; j < 8; j++)
			printf("%02X", kc[j]);
		printf(":");
		for (j = 0; j < 4; j++)
			printf("%02X", sres[j]);
		printf(":");
		for (j = 0; j < 16; j++)
			printf("%02X", rand[j]);
		printf("\n");
	}

	scard_deinit(scard);

	return 0;
}


static void eapol_test_terminate(int sig, void *eloop_ctx,
				 void *signal_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
	eloop_terminate();
}


static void usage(void)
{
	printf("usage:\n"
	       "eapol_test [-nWS] -c<conf> [-a<AS IP>] [-p<AS port>] "
	       "[-s<AS secret>] [-r<count>]\n"
	       "eapol_test scard\n"
	       "eapol_test sim <PIN> <num triplets> [debug]\n"
	       "\n"
	       "options:\n"
	       "  -c<conf> = configuration file\n"
	       "  -a<AS IP> = IP address of the authentication server, "
	       "default 127.0.0.1\n"
	       "  -p<AS port> = UDP port of the authentication server, "
	       "default 1812\n"
	       "  -s<AS secret> = shared secret with the authentication "
	       "server, default 'radius'\n"
	       "  -r<count> = number of re-authentications\n"
	       "  -W = wait for a control interface monitor before starting\n"
	       "  -S = save configuration after authentiation\n"
	       "  -n = no MPPE keys expected\n");
}


int main(int argc, char *argv[])
{
	struct wpa_supplicant wpa_s;
	int c, ret = 1, wait_for_monitor = 0, save_config = 0;
	char *as_addr = "127.0.0.1";
	int as_port = 1812;
	char *as_secret = "radius";
	char *conf = NULL;

#ifdef CONFIG_NATIVE_WINDOWS
	WSADATA wsaData;
	if (WSAStartup(MAKEWORD(2, 0), &wsaData)) {
		printf("Could not find a usable WinSock.dll\n");
		return -1;
	}
#endif /* CONFIG_NATIVE_WINDOWS */

	memset(&eapol_test, 0, sizeof(eapol_test));

	wpa_debug_level = 0;
	wpa_debug_show_keys = 1;

	for (;;) {
		c = getopt(argc, argv, "a:c:np:r:s:SW");
		if (c < 0)
			break;
		switch (c) {
		case 'a':
			as_addr = optarg;
			break;
		case 'c':
			conf = optarg;
			break;
		case 'n':
			eapol_test.no_mppe_keys++;
			break;
		case 'p':
			as_port = atoi(optarg);
			break;
		case 'r':
			eapol_test.eapol_test_num_reauths = atoi(optarg);
			break;
		case 's':
			as_secret = optarg;
			break;
		case 'S':
			save_config++;
			break;
		case 'W':
			wait_for_monitor++;
			break;
		default:
			usage();
			return -1;
		}
	}

	if (argc > optind && strcmp(argv[optind], "scard") == 0) {
		return scard_test();
	}

	if (argc > optind && strcmp(argv[optind], "sim") == 0) {
		return scard_get_triplets(argc - optind - 1,
					  &argv[optind + 1]);
	}

	if (conf == NULL) {
		usage();
		printf("Configuration file is required.\n");
		return -1;
	}

	eloop_init(&wpa_s);

	memset(&wpa_s, 0, sizeof(wpa_s));
	eapol_test.wpa_s = &wpa_s;
	wpa_s.conf = wpa_config_read(conf);
	if (wpa_s.conf == NULL) {
		printf("Failed to parse configuration file '%s'.\n", conf);
		return -1;
	}
	if (wpa_s.conf->ssid == NULL) {
		printf("No networks defined.\n");
		return -1;
	}

	wpa_init_conf(&eapol_test, &wpa_s, as_addr, as_port, as_secret);
	if (wpa_supplicant_ctrl_iface_init(&wpa_s)) {
		printf("Failed to initialize control interface '%s'.\n"
		       "You may have another eapol_test process already "
		       "running or the file was\n"
		       "left by an unclean termination of eapol_test in "
		       "which case you will need\n"
		       "to manually remove this file before starting "
		       "eapol_test again.\n",
		       wpa_s.conf->ctrl_interface);
		return -1;
	}
	if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
		return -1;

	if (test_eapol(&eapol_test, &wpa_s, wpa_s.conf->ssid))
		return -1;

	if (wait_for_monitor)
		wpa_supplicant_ctrl_iface_wait(&wpa_s);

	eloop_register_timeout(30, 0, eapol_test_timeout, &eapol_test, NULL);
	eloop_register_timeout(0, 0, send_eap_request_identity, &wpa_s, NULL);
	eloop_register_signal(SIGINT, eapol_test_terminate, NULL);
	eloop_register_signal(SIGTERM, eapol_test_terminate, NULL);
#ifndef CONFIG_NATIVE_WINDOWS
	eloop_register_signal(SIGHUP, eapol_test_terminate, NULL);
#endif /* CONFIG_NATIVE_WINDOWS */
	eloop_run();

	if (eapol_test_compare_pmk(&eapol_test) == 0)
		ret = 0;
	if (eapol_test.auth_timed_out)
		ret = -2;
	if (eapol_test.radius_access_reject_received)
		ret = -3;

	if (save_config)
		wpa_config_write(conf, wpa_s.conf);

	test_eapol_clean(&eapol_test, &wpa_s);

	eloop_destroy();

	printf("MPPE keys OK: %d  mismatch: %d\n",
	       eapol_test.num_mppe_ok, eapol_test.num_mppe_mismatch);
	if (eapol_test.num_mppe_mismatch)
		ret = -4;
	if (ret)
		printf("FAILURE\n");
	else
		printf("SUCCESS\n");

#ifdef CONFIG_NATIVE_WINDOWS
	WSACleanup();
#endif /* CONFIG_NATIVE_WINDOWS */

	return ret;
}