src/eap_peer/eap_vendor_test.c

   1 /*
   2  * EAP peer method: Test method for vendor specific (expanded) EAP type
   3  * Copyright (c) 2005-2006, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  *
  14  * This file implements a vendor specific test method using EAP expanded types.
  15  * This is only for test use and must not be used for authentication since no
  16  * security is provided.
  17  */
  18
  19 #include "includes.h"
  20
  21 #include "common.h"
  22 #include "eap_i.h"
  23 #ifdef TEST_PENDING_REQUEST
  24 #include "eloop.h"
  25 #endif /* TEST_PENDING_REQUEST */
  26
  27
  28 #define EAP_VENDOR_ID 0xfffefd
  29 #define EAP_VENDOR_TYPE 0xfcfbfaf9
  30
  31
  32 /* #define TEST_PENDING_REQUEST */
  33
  34 struct eap_vendor_test_data {
  35         enum { INIT, CONFIRM, SUCCESS } state;
  36         int first_try;
  37 };
  38
  39
  40 static void * eap_vendor_test_init(struct eap_sm *sm)
  41 {
  42         struct eap_vendor_test_data *data;
  43         data = os_zalloc(sizeof(*data));
  44         if (data == NULL)
  45                 return NULL;
  46         data->state = INIT;
  47         data->first_try = 1;
  48         return data;
  49 }
  50
  51
  52 static void eap_vendor_test_deinit(struct eap_sm *sm, void *priv)
  53 {
  54         struct eap_vendor_test_data *data = priv;
  55         os_free(data);
  56 }
  57
  58
  59 #ifdef TEST_PENDING_REQUEST
  60 static void eap_vendor_ready(void *eloop_ctx, void *timeout_ctx)
  61 {
  62         struct eap_sm *sm = eloop_ctx;
  63         wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: Ready to re-process pending "
  64                    "request");
  65         eap_notify_pending(sm);
  66 }
  67 #endif /* TEST_PENDING_REQUEST */
  68
  69
  70 static struct wpabuf * eap_vendor_test_process(struct eap_sm *sm, void *priv,
  71                                                struct eap_method_ret *ret,
  72                                                const struct wpabuf *reqData)
  73 {
  74         struct eap_vendor_test_data *data = priv;
  75         struct wpabuf *resp;
  76         const u8 *pos;
  77         size_t len;
  78
  79         pos = eap_hdr_validate(EAP_VENDOR_ID, EAP_VENDOR_TYPE, reqData, &len);
  80         if (pos == NULL || len < 1) {
  81                 ret->ignore = TRUE;
  82                 return NULL;
  83         }
  84
  85         if (data->state == INIT && *pos != 1) {
  86                 wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: Unexpected message "
  87                            "%d in INIT state", *pos);
  88                 ret->ignore = TRUE;
  89                 return NULL;
  90         }
  91
  92         if (data->state == CONFIRM && *pos != 3) {
  93                 wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: Unexpected message "
  94                            "%d in CONFIRM state", *pos);
  95                 ret->ignore = TRUE;
  96                 return NULL;
  97         }
  98
  99         if (data->state == SUCCESS) {
 100                 wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: Unexpected message "
 101                            "in SUCCESS state");
 102                 ret->ignore = TRUE;
 103                 return NULL;
 104         }
 105
 106         if (data->state == CONFIRM) {
 107 #ifdef TEST_PENDING_REQUEST
 108                 if (data->first_try) {
 109                         data->first_try = 0;
 110                         wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: Testing "
 111                                    "pending request");
 112                         ret->ignore = TRUE;
 113                         eloop_register_timeout(1, 0, eap_vendor_ready, sm,
 114                                                NULL);
 115                         return NULL;
 116                 }
 117 #endif /* TEST_PENDING_REQUEST */
 118         }
 119
 120         ret->ignore = FALSE;
 121
 122         wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: Generating Response");
 123         ret->allowNotifications = TRUE;
 124
 125         resp = eap_msg_alloc(EAP_VENDOR_ID, EAP_VENDOR_TYPE, 1,
 126                              EAP_CODE_RESPONSE, eap_get_id(reqData));
 127         if (resp == NULL)
 128                 return NULL;
 129
 130         if (data->state == INIT) {
 131                 wpabuf_put_u8(resp, 2);
 132                 data->state = CONFIRM;
 133                 ret->methodState = METHOD_CONT;
 134                 ret->decision = DECISION_FAIL;
 135         } else {
 136                 wpabuf_put_u8(resp, 4);
 137                 data->state = SUCCESS;
 138                 ret->methodState = METHOD_DONE;
 139                 ret->decision = DECISION_UNCOND_SUCC;
 140         }
 141
 142         return resp;
 143 }
 144
 145
 146 static Boolean eap_vendor_test_isKeyAvailable(struct eap_sm *sm, void *priv)
 147 {
 148         struct eap_vendor_test_data *data = priv;
 149         return data->state == SUCCESS;
 150 }
 151
 152
 153 static u8 * eap_vendor_test_getKey(struct eap_sm *sm, void *priv, size_t *len)
 154 {
 155         struct eap_vendor_test_data *data = priv;
 156         u8 *key;
 157         const int key_len = 64;
 158
 159         if (data->state != SUCCESS)
 160                 return NULL;
 161
 162         key = os_malloc(key_len);
 163         if (key == NULL)
 164                 return NULL;
 165
 166         os_memset(key, 0x11, key_len / 2);
 167         os_memset(key + key_len / 2, 0x22, key_len / 2);
 168         *len = key_len;
 169
 170         return key;
 171 }
 172
 173
 174 int eap_peer_vendor_test_register(void)
 175 {
 176         struct eap_method *eap;
 177         int ret;
 178
 179         eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
 180                                     EAP_VENDOR_ID, EAP_VENDOR_TYPE,
 181                                     "VENDOR-TEST");
 182         if (eap == NULL)
 183                 return -1;
 184
 185         eap->init = eap_vendor_test_init;
 186         eap->deinit = eap_vendor_test_deinit;
 187         eap->process = eap_vendor_test_process;
 188         eap->isKeyAvailable = eap_vendor_test_isKeyAvailable;
 189         eap->getKey = eap_vendor_test_getKey;
 190
 191         ret = eap_peer_method_register(eap);
 192         if (ret)
 193                 eap_peer_method_free(eap);
 194         return ret;
 195 }