wpa_supplicant: Add upstream files for wps registrar

components/wpa_supplicant/src/eap_server/eap_server_identity.c

@@ -0,0 +1,177 @@
+/*
+ * hostapd / EAP-Identity
+ * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "eap_i.h"
+
+
+struct eap_identity_data {
+	enum { CONTINUE, SUCCESS, FAILURE } state;
+	int pick_up;
+};
+
+
+static void * eap_identity_init(struct eap_sm *sm)
+{
+	struct eap_identity_data *data;
+
+	data = os_zalloc(sizeof(*data));
+	if (data == NULL)
+		return NULL;
+	data->state = CONTINUE;
+
+	return data;
+}
+
+
+static void * eap_identity_initPickUp(struct eap_sm *sm)
+{
+	struct eap_identity_data *data;
+	data = eap_identity_init(sm);
+	if (data) {
+		data->pick_up = 1;
+	}
+	return data;
+}
+
+
+static void eap_identity_reset(struct eap_sm *sm, void *priv)
+{
+	struct eap_identity_data *data = priv;
+	os_free(data);
+}
+
+
+static struct wpabuf * eap_identity_buildReq(struct eap_sm *sm, void *priv,
+					     u8 id)
+{
+	struct eap_identity_data *data = priv;
+	struct wpabuf *req;
+	const char *req_data;
+	size_t req_data_len;
+
+	if (sm->eapol_cb->get_eap_req_id_text) {
+		req_data = sm->eapol_cb->get_eap_req_id_text(sm->eapol_ctx,
+							     &req_data_len);
+	} else {
+		req_data = NULL;
+		req_data_len = 0;
+	}
+	req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, req_data_len,
+			    EAP_CODE_REQUEST, id);
+	if (req == NULL) {
+		wpa_printf(MSG_ERROR, "EAP-Identity: Failed to allocate "
+			   "memory for request");
+		data->state = FAILURE;
+		return NULL;
+	}
+
+	wpabuf_put_data(req, req_data, req_data_len);
+
+	return req;
+}
+
+
+static bool eap_identity_check(struct eap_sm *sm, void *priv,
+			       struct wpabuf *respData)
+{
+	const u8 *pos;
+	size_t len;
+
+	pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+			       respData, &len);
+	if (pos == NULL) {
+		wpa_printf(MSG_INFO, "EAP-Identity: Invalid frame");
+		return true;
+	}
+
+	return false;
+}
+
+
+static void eap_identity_process(struct eap_sm *sm, void *priv,
+				 struct wpabuf *respData)
+{
+	struct eap_identity_data *data = priv;
+	const u8 *pos;
+	size_t len;
+	char *buf;
+
+	if (data->pick_up) {
+		if (eap_identity_check(sm, data, respData)) {
+			wpa_printf(MSG_DEBUG, "EAP-Identity: failed to pick "
+				   "up already started negotiation");
+			data->state = FAILURE;
+			return;
+		}
+		data->pick_up = 0;
+	}
+
+	pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+			       respData, &len);
+	if (pos == NULL)
+		return; /* Should not happen - frame already validated */
+
+	wpa_hexdump_ascii(MSG_DEBUG, "EAP-Identity: Peer identity", pos, len);
+	buf = os_malloc(len * 4 + 1);
+	if (buf) {
+		printf_encode(buf, len * 4 + 1, pos, len);
+		eap_log_msg(sm, "EAP-Response/Identity '%s'", buf);
+		os_free(buf);
+	}
+	if (sm->identity)
+		sm->update_user = true;
+	os_free(sm->identity);
+	sm->identity = os_malloc(len ? len : 1);
+	if (sm->identity == NULL) {
+		data->state = FAILURE;
+	} else {
+		os_memcpy(sm->identity, pos, len);
+		sm->identity_len = len;
+		data->state = SUCCESS;
+	}
+}
+
+
+static bool eap_identity_isDone(struct eap_sm *sm, void *priv)
+{
+	struct eap_identity_data *data = priv;
+	return data->state != CONTINUE;
+}
+
+
+static bool eap_identity_isSuccess(struct eap_sm *sm, void *priv)
+{
+	struct eap_identity_data *data = priv;
+	return data->state == SUCCESS;
+}
+
+
+int eap_server_identity_register(void)
+{
+	struct eap_method *eap;
+
+	eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
+				      EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+				      "Identity");
+	if (eap == NULL)
+		return -1;
+
+	eap->init = eap_identity_init;
+	eap->initPickUp = eap_identity_initPickUp;
+	eap->reset = eap_identity_reset;
+	eap->buildReq = eap_identity_buildReq;
+	eap->check = eap_identity_check;
+	eap->process = eap_identity_process;
+	eap->isDone = eap_identity_isDone;
+	eap->isSuccess = eap_identity_isSuccess;
+
+	return eap_server_method_register(eap);
+}