예제 #1
0
static int radius_server_reject(struct radius_server_data *data,
				struct radius_client *client,
				struct radius_msg *request,
				struct sockaddr *from, socklen_t fromlen,
				const char *from_addr, int from_port)
{
	struct radius_msg *msg;
	int ret = 0;
	struct eap_hdr eapfail;
	struct wpabuf *buf;
	struct radius_hdr *hdr = radius_msg_get_hdr(request);

	RADIUS_DEBUG("Reject invalid request from %s:%d",
		     from_addr, from_port);

	msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier);
	if (msg == NULL) {
		return -1;
	}

	os_memset(&eapfail, 0, sizeof(eapfail));
	eapfail.code = EAP_CODE_FAILURE;
	eapfail.identifier = 0;
	eapfail.length = host_to_be16(sizeof(eapfail));

	if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) {
		RADIUS_DEBUG("Failed to add EAP-Message attribute");
	}

	if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
		RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
		radius_msg_free(msg);
		return -1;
	}

	if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
				  client->shared_secret_len,
				  hdr->authenticator) <
	    0) {
		RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
	}

	if (wpa_debug_level <= MSG_MSGDUMP) {
		radius_msg_dump(msg);
	}

	data->counters.access_rejects++;
	client->counters.access_rejects++;
	buf = radius_msg_get_buf(msg);
	if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0,
		   (struct sockaddr *) from, sizeof(*from)) < 0) {
		wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", strerror(errno));
		ret = -1;
	}

	radius_msg_free(msg);

	return ret;
}
예제 #2
0
static void ieee802_1x_encapsulate_radius(struct eapol_test_data *e,
					  const u8 *eap, size_t len)
{
	struct radius_msg *msg;
	char buf[128];
	const struct eap_hdr *hdr;
	const u8 *pos;

	wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
		   "packet");

	e->radius_identifier = radius_client_get_id(e->radius);
	msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
			     e->radius_identifier);
	if (msg == NULL) {
		printf("Could not create net RADIUS packet\n");
		return;
	}

	radius_msg_make_authenticator(msg, (u8 *) e, sizeof(*e));

	hdr = (const struct eap_hdr *) eap;
	pos = (const u8 *) (hdr + 1);
	if (len > sizeof(*hdr) && hdr->code == EAP_CODE_RESPONSE &&
	    pos[0] == EAP_TYPE_IDENTITY) {
		pos++;
		os_free(e->eap_identity);
		e->eap_identity_len = len - sizeof(*hdr) - 1;
		e->eap_identity = os_malloc(e->eap_identity_len);
		if (e->eap_identity) {
			os_memcpy(e->eap_identity, pos, e->eap_identity_len);
			wpa_hexdump(MSG_DEBUG, "Learned identity from "
				    "EAP-Response-Identity",
				    e->eap_identity, e->eap_identity_len);
		}
	}

	if (e->eap_identity &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
				 e->eap_identity, e->eap_identity_len)) {
		printf("Could not add User-Name\n");
		goto fail;
	}

	if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_IP_ADDRESS) &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
				 (u8 *) &e->own_ip_addr, 4)) {
		printf("Could not add NAS-IP-Address\n");
		goto fail;
	}

	os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
		    MAC2STR(e->wpa_s->own_addr));
	if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CALLING_STATION_ID)
	    &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
				 (u8 *) buf, os_strlen(buf))) {
		printf("Could not add Calling-Station-Id\n");
		goto fail;
	}

	/* TODO: should probably check MTU from driver config; 2304 is max for
	 * IEEE 802.11, but use 1400 to avoid problems with too large packets
	 */
	if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_FRAMED_MTU) &&
	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
		printf("Could not add Framed-MTU\n");
		goto fail;
	}

	if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_PORT_TYPE) &&
	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
				       RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
		printf("Could not add NAS-Port-Type\n");
		goto fail;
	}

	os_snprintf(buf, sizeof(buf), "%s", e->connect_info);
	if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CONNECT_INFO) &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
				 (u8 *) buf, os_strlen(buf))) {
		printf("Could not add Connect-Info\n");
		goto fail;
	}

	if (add_extra_attrs(msg, e->extra_attrs) < 0)
		goto fail;

	if (eap && !radius_msg_add_eap(msg, eap, len)) {
		printf("Could not add EAP-Message\n");
		goto fail;
	}

	/* State attribute must be copied if and only if this packet is
	 * Access-Request reply to the previous Access-Challenge */
	if (e->last_recv_radius &&
	    radius_msg_get_hdr(e->last_recv_radius)->code ==
	    RADIUS_CODE_ACCESS_CHALLENGE) {
		int res = radius_msg_copy_attr(msg, e->last_recv_radius,
					       RADIUS_ATTR_STATE);
		if (res < 0) {
			printf("Could not copy State attribute from previous "
			       "Access-Challenge\n");
			goto fail;
		}
		if (res > 0) {
			wpa_printf(MSG_DEBUG, "  Copied RADIUS State "
				   "Attribute");
		}
	}

	radius_client_send(e->radius, msg, RADIUS_AUTH, e->wpa_s->own_addr);
	return;

 fail:
	radius_msg_free(msg);
}
예제 #3
0
파일: eapol_test.c 프로젝트: OPSF/uClinux
static void ieee802_1x_encapsulate_radius(struct wpa_supplicant *wpa_s,
					  u8 *eap, size_t len)
{
	struct radius_msg *msg;
	char buf[128];
	struct wpa_ssid *ssid = wpa_s->current_ssid;
	u8 *identity;
	size_t identity_len;

	wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
		   "packet");

	wpa_s->radius_identifier = radius_client_get_id(wpa_s);
	msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
			     wpa_s->radius_identifier);
	if (msg == NULL) {
		printf("Could not create net RADIUS packet\n");
		return;
	}

	radius_msg_make_authenticator(msg, (u8 *) wpa_s, sizeof(*wpa_s));

	if (ssid->anonymous_identity) {
		identity = ssid->anonymous_identity;
		identity_len = ssid->anonymous_identity_len;
	} else {
		identity = ssid->identity;
		identity_len = ssid->identity_len;
	}

	if (identity &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
				 identity, identity_len)) {
		printf("Could not add User-Name\n");
		goto fail;
	}

	if (!radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
				 (u8 *) &wpa_s->own_ip_addr, 4)) {
		printf("Could not add NAS-IP-Address\n");
		goto fail;
	}

	snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
		 MAC2STR(wpa_s->own_addr));
	if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
				 buf, strlen(buf))) {
		printf("Could not add Calling-Station-Id\n");
		goto fail;
	}

	/* TODO: should probably check MTU from driver config; 2304 is max for
	 * IEEE 802.11, but use 1400 to avoid problems with too large packets
	 */
	if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
		printf("Could not add Framed-MTU\n");
		goto fail;
	}

	if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
				       RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
		printf("Could not add NAS-Port-Type\n");
		goto fail;
	}

	snprintf(buf, sizeof(buf), "CONNECT 11Mbps 802.11b");
	if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
				 buf, strlen(buf))) {
		printf("Could not add Connect-Info\n");
		goto fail;
	}

	if (eap && !radius_msg_add_eap(msg, eap, len)) {
		printf("Could not add EAP-Message\n");
		goto fail;
	}

	/* State attribute must be copied if and only if this packet is
	 * Access-Request reply to the previous Access-Challenge */
	if (wpa_s->last_recv_radius && wpa_s->last_recv_radius->hdr->code ==
	    RADIUS_CODE_ACCESS_CHALLENGE) {
		int res = radius_msg_copy_attr(msg, wpa_s->last_recv_radius,
					       RADIUS_ATTR_STATE);
		if (res < 0) {
			printf("Could not copy State attribute from previous "
			       "Access-Challenge\n");
			goto fail;
		}
		if (res > 0) {
			wpa_printf(MSG_DEBUG, "  Copied RADIUS State "
				   "Attribute");
		}
	}

	radius_client_send(wpa_s, msg, RADIUS_AUTH, wpa_s->own_addr);
	return;

 fail:
	radius_msg_free(msg);
	free(msg);
}
예제 #4
0
static struct radius_msg *
radius_server_encapsulate_eap(struct radius_server_data *data,
			      struct radius_client *client,
			      struct radius_session *sess,
			      struct radius_msg *request)
{
	struct radius_msg *msg;
	int code;
	unsigned int sess_id;

	if (sess->eap_if->eapFail) {
		sess->eap_if->eapFail = FALSE;
		code = RADIUS_CODE_ACCESS_REJECT;
	} else if (sess->eap_if->eapSuccess) {
		sess->eap_if->eapSuccess = FALSE;
		code = RADIUS_CODE_ACCESS_ACCEPT;
	} else {
		sess->eap_if->eapReq = FALSE;
		code = RADIUS_CODE_ACCESS_CHALLENGE;
	}

	msg = radius_msg_new(code, request->hdr->identifier);
	if (msg == NULL) {
		RADIUS_DEBUG("Failed to allocate reply message");
		return NULL;
	}

	sess_id = htonl(sess->sess_id);
	if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
				 (u8 *) &sess_id, sizeof(sess_id))) {
		RADIUS_DEBUG("Failed to add State attribute");
	}

	if (sess->eap_if->eapReqData &&
	    !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData),
				wpabuf_len(sess->eap_if->eapReqData))) {
		RADIUS_DEBUG("Failed to add EAP-Message attribute");
	}

	if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) {
		int len;
		if (sess->eap_if->eapKeyDataLen > 64) {
			len = 32;
		} else {
			len = sess->eap_if->eapKeyDataLen / 2;
		}
		if (!radius_msg_add_mppe_keys(msg, request->hdr->authenticator,
					      (u8 *) client->shared_secret,
					      client->shared_secret_len,
					      sess->eap_if->eapKeyData + len,
					      len, sess->eap_if->eapKeyData,
					      len)) {
			RADIUS_DEBUG("Failed to add MPPE key attributes");
		}
	}

	if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
		RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
		radius_msg_free(msg);
		os_free(msg);
		return NULL;
	}

	if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
				  client->shared_secret_len,
				  request->hdr->authenticator) < 0) {
		RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
	}

	return msg;
}
예제 #5
0
static struct radius_msg *
radius_server_encapsulate_eap(struct radius_server_data *data,
			      struct radius_client *client,
			      struct radius_session *sess,
			      struct radius_msg *request)
{
	struct radius_msg *msg;
	int code;
	unsigned int sess_id;
	struct radius_hdr *hdr = radius_msg_get_hdr(request);

	if (sess->eap_if->eapFail) {
		sess->eap_if->eapFail = FALSE;
		code = RADIUS_CODE_ACCESS_REJECT;
	} else if (sess->eap_if->eapSuccess) {
		sess->eap_if->eapSuccess = FALSE;
		code = RADIUS_CODE_ACCESS_ACCEPT;
	} else {
		sess->eap_if->eapReq = FALSE;
		code = RADIUS_CODE_ACCESS_CHALLENGE;
	}

	msg = radius_msg_new(code, hdr->identifier);
	if (msg == NULL) {
		RADIUS_DEBUG("Failed to allocate reply message");
		return NULL;
	}

	sess_id = htonl(sess->sess_id);
	if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
	    !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
				 (u8 *) &sess_id, sizeof(sess_id))) {
		RADIUS_DEBUG("Failed to add State attribute");
	}

	if (sess->eap_if->eapReqData &&
	    !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData),
				wpabuf_len(sess->eap_if->eapReqData))) {
		RADIUS_DEBUG("Failed to add EAP-Message attribute");
	}

	if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) {
		int len;
#ifdef CONFIG_RADIUS_TEST
		if (data->dump_msk_file) {
			FILE *f;
			char buf[2 * 64 + 1];
			f = fopen(data->dump_msk_file, "a");
			if (f) {
				len = sess->eap_if->eapKeyDataLen;
				if (len > 64)
					len = 64;
				len = wpa_snprintf_hex(
					buf, sizeof(buf),
					sess->eap_if->eapKeyData, len);
				buf[len] = '\0';
				fprintf(f, "%s\n", buf);
				fclose(f);
			}
		}
#endif /* CONFIG_RADIUS_TEST */
		if (sess->eap_if->eapKeyDataLen > 64) {
			len = 32;
		} else {
			len = sess->eap_if->eapKeyDataLen / 2;
		}
		if (!radius_msg_add_mppe_keys(msg, hdr->authenticator,
					      (u8 *) client->shared_secret,
					      client->shared_secret_len,
					      sess->eap_if->eapKeyData + len,
					      len, sess->eap_if->eapKeyData,
					      len)) {
			RADIUS_DEBUG("Failed to add MPPE key attributes");
		}
	}

	if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
		RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
		radius_msg_free(msg);
		return NULL;
	}

	if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
				  client->shared_secret_len,
				  hdr->authenticator) < 0) {
		RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
	}

	return msg;
}