mirror of
https://github.com/espressif/esp-idf.git
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supplicant/esp_wifi: move supplicant to idf
Move supplicant to idf and do following refactoring: 1. Make the folder structure consitent with supplicant upstream 2. Remove duplicated header files and minimize the public header files 3. Refactor for WiFi/supplicant interfaces
This commit is contained in:
Deng Xin
231
components/wpa_supplicant/src/eap_peer/eap_tls.c
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231
components/wpa_supplicant/src/eap_peer/eap_tls.c
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@@ -0,0 +1,231 @@
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/*
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* EAP peer method: EAP-TLS (RFC 2716)
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* Copyright (c) 2004-2008, 2012, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#ifdef EAP_TLS
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#include "utils/common.h"
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#include "tls/tls.h"
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#include "eap_peer/eap_i.h"
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#include "eap_peer/eap_defs.h"
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#include "eap_peer/eap_tls_common.h"
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#include "eap_peer/eap_config.h"
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#include "eap_peer/eap_methods.h"
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struct eap_tls_data {
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struct eap_ssl_data ssl;
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u8 *key_data;
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u8 *session_id;
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size_t id_len;
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void *ssl_ctx;
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u8 eap_type;
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};
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static void eap_tls_deinit(struct eap_sm *sm, void *priv)
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{
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struct eap_tls_data *data = priv;
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if (data == NULL)
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return;
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eap_peer_tls_ssl_deinit(sm, &data->ssl);
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os_free(data->key_data);
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os_free(data->session_id);
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os_free(data);
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}
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static void * eap_tls_init(struct eap_sm *sm)
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{
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struct eap_tls_data *data;
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struct eap_peer_config *config = eap_get_config(sm);
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if (config == NULL ||
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config->private_key == 0) {
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wpa_printf(MSG_INFO, "EAP-TLS: Private key not configured");
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return NULL;
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}
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data = (struct eap_tls_data *)os_zalloc(sizeof(*data));
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if (data == NULL)
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return NULL;
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data->ssl_ctx = sm->ssl_ctx;
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if (eap_peer_tls_ssl_init(sm, &data->ssl, config, EAP_TYPE_TLS)) {
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wpa_printf(MSG_INFO, "EAP-TLS: Failed to initialize SSL.");
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eap_tls_deinit(sm, data);
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return NULL;
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}
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data->eap_type = EAP_TYPE_TLS;
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return data;
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}
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static struct wpabuf * eap_tls_failure(struct eap_sm *sm,
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struct eap_tls_data *data,
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struct eap_method_ret *ret, int res,
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struct wpabuf *resp, u8 id)
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{
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wpa_printf(MSG_DEBUG, "EAP-TLS: TLS processing failed");
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ret->methodState = METHOD_DONE;
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ret->decision = DECISION_FAIL;
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if (res == -1) {
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struct eap_peer_config *config = eap_get_config(sm);
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if (config) {
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/*
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* The TLS handshake failed. So better forget the old
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* PIN. It may be wrong, we cannot be sure but trying
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* the wrong one again might block it on the card--so
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* better ask the user again.
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*/
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os_free(config->pin);
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config->pin = NULL;
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}
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}
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if (resp) {
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/*
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* This is likely an alert message, so send it instead of just
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* ACKing the error.
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*/
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return resp;
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}
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return eap_peer_tls_build_ack(id, data->eap_type, 0);
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}
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static void eap_tls_success(struct eap_sm *sm, struct eap_tls_data *data,
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struct eap_method_ret *ret)
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{
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wpa_printf(MSG_DEBUG, "EAP-TLS: Done");
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ret->methodState = METHOD_DONE;
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ret->decision = DECISION_UNCOND_SUCC;
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os_free(data->key_data);
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data->key_data = eap_peer_tls_derive_key(sm, &data->ssl,
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"client EAP encryption",
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EAP_TLS_KEY_LEN +
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EAP_EMSK_LEN);
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if (data->key_data) {
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wpa_hexdump_key(MSG_DEBUG, "EAP-TLS: Derived key",
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data->key_data, EAP_TLS_KEY_LEN);
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wpa_hexdump_key(MSG_DEBUG, "EAP-TLS: Derived EMSK",
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data->key_data + EAP_TLS_KEY_LEN,
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EAP_EMSK_LEN);
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} else {
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wpa_printf(MSG_INFO, "EAP-TLS: Failed to derive key");
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}
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os_free(data->session_id);
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data->session_id = eap_peer_tls_derive_session_id(sm, &data->ssl,
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EAP_TYPE_TLS,
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&data->id_len);
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if (data->session_id) {
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wpa_hexdump(MSG_DEBUG, "EAP-TLS: Derived Session-Id",
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data->session_id, data->id_len);
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} else {
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wpa_printf(MSG_ERROR, "EAP-TLS: Failed to derive Session-Id");
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}
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}
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static struct wpabuf * eap_tls_process(struct eap_sm *sm, void *priv,
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struct eap_method_ret *ret,
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const struct wpabuf *reqData)
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{
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size_t left;
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int res;
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struct wpabuf *resp;
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u8 flags, id;
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const u8 *pos;
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struct eap_tls_data *data = priv;
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pos = eap_peer_tls_process_init(sm, &data->ssl, data->eap_type, ret,
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reqData, &left, &flags);
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if (pos == NULL)
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return NULL;
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id = eap_get_id(reqData);
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if (flags & EAP_TLS_FLAGS_START) {
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wpa_printf(MSG_DEBUG, "EAP-TLS: Start");
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left = 0; /* make sure that this frame is empty, even though it
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* should always be, anyway */
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}
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resp = NULL;
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res = eap_peer_tls_process_helper(sm, &data->ssl, data->eap_type, 0,
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id, pos, left, &resp);
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if (res < 0) {
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return eap_tls_failure(sm, data, ret, res, resp, id);
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}
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if (tls_connection_established(data->ssl_ctx, data->ssl.conn))
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eap_tls_success(sm, data, ret);
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if (res == 1) {
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wpabuf_free(resp);
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return eap_peer_tls_build_ack(id, data->eap_type, 0);
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}
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return resp;
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}
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static bool eap_tls_isKeyAvailable(struct eap_sm *sm, void *priv)
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{
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struct eap_tls_data *data = priv;
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return data->key_data != NULL;
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}
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static u8 * eap_tls_getKey(struct eap_sm *sm, void *priv, size_t *len)
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{
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struct eap_tls_data *data = priv;
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u8 *key;
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if (data->key_data == NULL)
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return NULL;
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key = os_malloc(EAP_TLS_KEY_LEN);
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if (key == NULL)
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return NULL;
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*len = EAP_TLS_KEY_LEN;
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os_memcpy(key, data->key_data, EAP_TLS_KEY_LEN);
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return key;
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}
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int eap_peer_tls_register(void)
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{
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struct eap_method *eap;
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int ret;
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eap = eap_peer_method_alloc(EAP_VENDOR_IETF, EAP_TYPE_TLS,
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"TLS");
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if (eap == NULL)
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return -1;
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eap->init = eap_tls_init;
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eap->deinit = eap_tls_deinit;
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eap->process = eap_tls_process;
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eap->isKeyAvailable = eap_tls_isKeyAvailable;
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eap->getKey = eap_tls_getKey;
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ret = eap_peer_method_register(eap);
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if (ret)
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eap_peer_method_free(eap);
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return ret;
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}
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#endif /* EAP_TLS */
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