hostap/eap_example/eap_example_peer.c

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/*
* Example application showing how EAP peer code from wpa_supplicant can be
* used as a library.
* Copyright (c) 2007, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "includes.h"
#include "common.h"
#include "eap_peer/eap.h"
#include "eap_peer/eap_config.h"
#include "wpabuf.h"
void eap_example_server_rx(const u8 *data, size_t data_len);
struct eap_peer_ctx {
Boolean eapSuccess;
Boolean eapRestart;
Boolean eapFail;
Boolean eapResp;
Boolean eapNoResp;
Boolean eapReq;
Boolean portEnabled;
Boolean altAccept; /* for EAP */
Boolean altReject; /* for EAP */
struct wpabuf *eapReqData; /* for EAP */
unsigned int idleWhile; /* for EAP state machine */
struct eap_peer_config eap_config;
struct eap_sm *eap;
};
static struct eap_peer_ctx eap_ctx;
static struct eap_peer_config * peer_get_config(void *ctx)
{
struct eap_peer_ctx *peer = ctx;
return &peer->eap_config;
}
static Boolean peer_get_bool(void *ctx, enum eapol_bool_var variable)
{
struct eap_peer_ctx *peer = ctx;
if (peer == NULL)
return FALSE;
switch (variable) {
case EAPOL_eapSuccess:
return peer->eapSuccess;
case EAPOL_eapRestart:
return peer->eapRestart;
case EAPOL_eapFail:
return peer->eapFail;
case EAPOL_eapResp:
return peer->eapResp;
case EAPOL_eapNoResp:
return peer->eapNoResp;
case EAPOL_eapReq:
return peer->eapReq;
case EAPOL_portEnabled:
return peer->portEnabled;
case EAPOL_altAccept:
return peer->altAccept;
case EAPOL_altReject:
return peer->altReject;
}
return FALSE;
}
static void peer_set_bool(void *ctx, enum eapol_bool_var variable,
Boolean value)
{
struct eap_peer_ctx *peer = ctx;
if (peer == NULL)
return;
switch (variable) {
case EAPOL_eapSuccess:
peer->eapSuccess = value;
break;
case EAPOL_eapRestart:
peer->eapRestart = value;
break;
case EAPOL_eapFail:
peer->eapFail = value;
break;
case EAPOL_eapResp:
peer->eapResp = value;
break;
case EAPOL_eapNoResp:
peer->eapNoResp = value;
break;
case EAPOL_eapReq:
peer->eapReq = value;
break;
case EAPOL_portEnabled:
peer->portEnabled = value;
break;
case EAPOL_altAccept:
peer->altAccept = value;
break;
case EAPOL_altReject:
peer->altReject = value;
break;
}
}
static unsigned int peer_get_int(void *ctx, enum eapol_int_var variable)
{
struct eap_peer_ctx *peer = ctx;
if (peer == NULL)
return 0;
switch (variable) {
case EAPOL_idleWhile:
return peer->idleWhile;
}
return 0;
}
static void peer_set_int(void *ctx, enum eapol_int_var variable,
unsigned int value)
{
struct eap_peer_ctx *peer = ctx;
if (peer == NULL)
return;
switch (variable) {
case EAPOL_idleWhile:
peer->idleWhile = value;
break;
}
}
static struct wpabuf * peer_get_eapReqData(void *ctx)
{
struct eap_peer_ctx *peer = ctx;
if (peer == NULL || peer->eapReqData == NULL)
return NULL;
return peer->eapReqData;
}
static void peer_set_config_blob(void *ctx, struct wpa_config_blob *blob)
{
printf("TODO: %s\n", __func__);
}
static const struct wpa_config_blob *
peer_get_config_blob(void *ctx, const char *name)
{
printf("TODO: %s\n", __func__);
return NULL;
}
static void peer_notify_pending(void *ctx)
{
printf("TODO: %s\n", __func__);
}
static int eap_peer_register_methods(void)
{
int ret = 0;
#ifdef EAP_MD5
if (ret == 0)
ret = eap_peer_md5_register();
#endif /* EAP_MD5 */
#ifdef EAP_TLS
if (ret == 0)
ret = eap_peer_tls_register();
#endif /* EAP_TLS */
#ifdef EAP_MSCHAPv2
if (ret == 0)
ret = eap_peer_mschapv2_register();
#endif /* EAP_MSCHAPv2 */
#ifdef EAP_PEAP
if (ret == 0)
ret = eap_peer_peap_register();
#endif /* EAP_PEAP */
#ifdef EAP_TTLS
if (ret == 0)
ret = eap_peer_ttls_register();
#endif /* EAP_TTLS */
#ifdef EAP_GTC
if (ret == 0)
ret = eap_peer_gtc_register();
#endif /* EAP_GTC */
#ifdef EAP_OTP
if (ret == 0)
ret = eap_peer_otp_register();
#endif /* EAP_OTP */
#ifdef EAP_SIM
if (ret == 0)
ret = eap_peer_sim_register();
#endif /* EAP_SIM */
#ifdef EAP_LEAP
if (ret == 0)
ret = eap_peer_leap_register();
#endif /* EAP_LEAP */
#ifdef EAP_PSK
if (ret == 0)
ret = eap_peer_psk_register();
#endif /* EAP_PSK */
#ifdef EAP_AKA
if (ret == 0)
ret = eap_peer_aka_register();
#endif /* EAP_AKA */
#ifdef EAP_AKA_PRIME
if (ret == 0)
ret = eap_peer_aka_prime_register();
#endif /* EAP_AKA_PRIME */
#ifdef EAP_FAST
if (ret == 0)
ret = eap_peer_fast_register();
#endif /* EAP_FAST */
#ifdef EAP_PAX
if (ret == 0)
ret = eap_peer_pax_register();
#endif /* EAP_PAX */
#ifdef EAP_SAKE
if (ret == 0)
ret = eap_peer_sake_register();
#endif /* EAP_SAKE */
#ifdef EAP_GPSK
if (ret == 0)
ret = eap_peer_gpsk_register();
#endif /* EAP_GPSK */
#ifdef EAP_WSC
if (ret == 0)
ret = eap_peer_wsc_register();
#endif /* EAP_WSC */
#ifdef EAP_IKEV2
if (ret == 0)
ret = eap_peer_ikev2_register();
#endif /* EAP_IKEV2 */
#ifdef EAP_VENDOR_TEST
if (ret == 0)
ret = eap_peer_vendor_test_register();
#endif /* EAP_VENDOR_TEST */
#ifdef EAP_TNC
if (ret == 0)
ret = eap_peer_tnc_register();
#endif /* EAP_TNC */
return ret;
}
static struct eapol_callbacks eap_cb;
static struct eap_config eap_conf;
int eap_example_peer_init(void)
{
if (eap_peer_register_methods() < 0)
return -1;
os_memset(&eap_ctx, 0, sizeof(eap_ctx));
eap_ctx.eap_config.identity = (u8 *) os_strdup("user");
eap_ctx.eap_config.identity_len = 4;
eap_ctx.eap_config.password = (u8 *) os_strdup("password");
eap_ctx.eap_config.password_len = 8;
eap_ctx.eap_config.ca_cert = (u8 *) os_strdup("ca.pem");
eap_ctx.eap_config.fragment_size = 1398;
os_memset(&eap_cb, 0, sizeof(eap_cb));
eap_cb.get_config = peer_get_config;
eap_cb.get_bool = peer_get_bool;
eap_cb.set_bool = peer_set_bool;
eap_cb.get_int = peer_get_int;
eap_cb.set_int = peer_set_int;
eap_cb.get_eapReqData = peer_get_eapReqData;
eap_cb.set_config_blob = peer_set_config_blob;
eap_cb.get_config_blob = peer_get_config_blob;
eap_cb.notify_pending = peer_notify_pending;
os_memset(&eap_conf, 0, sizeof(eap_conf));
eap_ctx.eap = eap_peer_sm_init(&eap_ctx, &eap_cb, &eap_ctx, &eap_conf);
if (eap_ctx.eap == NULL)
return -1;
/* Enable "port" to allow authentication */
eap_ctx.portEnabled = TRUE;
return 0;
}
void eap_example_peer_deinit(void)
{
eap_peer_sm_deinit(eap_ctx.eap);
eap_peer_unregister_methods();
wpabuf_free(eap_ctx.eapReqData);
os_free(eap_ctx.eap_config.identity);
os_free(eap_ctx.eap_config.password);
os_free(eap_ctx.eap_config.ca_cert);
}
int eap_example_peer_step(void)
{
int res;
res = eap_peer_sm_step(eap_ctx.eap);
if (eap_ctx.eapResp) {
struct wpabuf *resp;
printf("==> Response\n");
eap_ctx.eapResp = FALSE;
resp = eap_get_eapRespData(eap_ctx.eap);
if (resp) {
/* Send EAP response to the server */
eap_example_server_rx(wpabuf_head(resp),
wpabuf_len(resp));
wpabuf_free(resp);
}
}
if (eap_ctx.eapSuccess) {
res = 0;
if (eap_key_available(eap_ctx.eap)) {
const u8 *key;
size_t key_len;
key = eap_get_eapKeyData(eap_ctx.eap, &key_len);
wpa_hexdump(MSG_DEBUG, "EAP keying material",
key, key_len);
}
}
return res;
}
void eap_example_peer_rx(const u8 *data, size_t data_len)
{
/* Make received EAP message available to the EAP library */
eap_ctx.eapReq = TRUE;
wpabuf_free(eap_ctx.eapReqData);
eap_ctx.eapReqData = wpabuf_alloc_copy(data, data_len);
}