1 /* 2 * Test program for combined WPA authenticator/supplicant 3 * Copyright (c) 2006-2007, Jouni Malinen <j (at) 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 15 #include "includes.h" 16 17 #include "common.h" 18 #include "eloop.h" 19 #include "ieee802_11_defs.h" 20 #include "config.h" 21 #include "wpa.h" 22 #include "wpa_ie.h" 23 #include "../hostapd/wpa.h" 24 25 26 extern int wpa_debug_level; 27 extern int wpa_debug_show_keys; 28 29 30 struct wpa { 31 u8 auth_addr[ETH_ALEN]; 32 u8 supp_addr[ETH_ALEN]; 33 u8 psk[PMK_LEN]; 34 35 /* from authenticator */ 36 u8 auth_eapol_dst[ETH_ALEN]; 37 u8 *auth_eapol; 38 size_t auth_eapol_len; 39 40 /* from supplicant */ 41 u8 *supp_eapol; 42 size_t supp_eapol_len; 43 44 struct wpa_sm *supp; 45 struct wpa_authenticator *auth_group; 46 struct wpa_state_machine *auth; 47 48 struct wpa_ssid ssid; 49 u8 supp_ie[80]; 50 size_t supp_ie_len; 51 }; 52 53 54 static struct wpa_ssid * supp_get_ssid(void *ctx) 55 { 56 struct wpa *wpa = ctx; 57 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 58 return &wpa->ssid; 59 } 60 61 62 static int supp_get_bssid(void *ctx, u8 *bssid) 63 { 64 struct wpa *wpa = ctx; 65 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 66 os_memcpy(bssid, wpa->auth_addr, ETH_ALEN); 67 return 0; 68 } 69 70 71 static void supp_set_state(void *ctx, wpa_states state) 72 { 73 wpa_printf(MSG_DEBUG, "SUPP: %s(state=%d)", __func__, state); 74 } 75 76 77 static void auth_eapol_rx(void *eloop_data, void *user_ctx) 78 { 79 struct wpa *wpa = eloop_data; 80 81 wpa_printf(MSG_DEBUG, "AUTH: RX EAPOL frame"); 82 wpa_receive(wpa->auth_group, wpa->auth, wpa->supp_eapol, 83 wpa->supp_eapol_len); 84 } 85 86 87 static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf, 88 size_t len) 89 { 90 struct wpa *wpa = ctx; 91 92 wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x " 93 "len=%lu)", 94 __func__, MAC2STR(dest), proto, (unsigned long) len); 95 96 os_free(wpa->supp_eapol); 97 wpa->supp_eapol = os_malloc(len); 98 if (wpa->supp_eapol == NULL) 99 return -1; 100 os_memcpy(wpa->supp_eapol, buf, len); 101 wpa->supp_eapol_len = len; 102 eloop_register_timeout(0, 0, auth_eapol_rx, wpa, NULL); 103 104 return 0; 105 } 106 107 108 static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data, 109 u16 data_len, size_t *msg_len, void **data_pos) 110 { 111 struct ieee802_1x_hdr *hdr; 112 113 wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)", 114 __func__, type, data_len); 115 116 *msg_len = sizeof(*hdr) + data_len; 117 hdr = os_malloc(*msg_len); 118 if (hdr == NULL) 119 return NULL; 120 121 hdr->version = 2; 122 hdr->type = type; 123 hdr->length = host_to_be16(data_len); 124 125 if (data) 126 os_memcpy(hdr + 1, data, data_len); 127 else 128 os_memset(hdr + 1, 0, data_len); 129 130 if (data_pos) 131 *data_pos = hdr + 1; 132 133 return (u8 *) hdr; 134 } 135 136 137 static int supp_get_beacon_ie(void *ctx) 138 { 139 struct wpa *wpa = ctx; 140 const u8 *ie; 141 size_t ielen; 142 143 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 144 145 ie = wpa_auth_get_wpa_ie(wpa->auth_group, &ielen); 146 if (ie == NULL || ielen < 1) 147 return -1; 148 if (ie[0] == WLAN_EID_RSN) 149 return wpa_sm_set_ap_rsn_ie(wpa->supp, ie, 2 + ie[1]); 150 return wpa_sm_set_ap_wpa_ie(wpa->supp, ie, 2 + ie[1]); 151 } 152 153 154 static int supp_set_key(void *ctx, wpa_alg alg, 155 const u8 *addr, int key_idx, int set_tx, 156 const u8 *seq, size_t seq_len, 157 const u8 *key, size_t key_len) 158 { 159 wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d " 160 "set_tx=%d)", 161 __func__, alg, MAC2STR(addr), key_idx, set_tx); 162 wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len); 163 wpa_hexdump(MSG_DEBUG, "SUPP: set_key - key", key, key_len); 164 return 0; 165 } 166 167 168 static int supp_mlme_setprotection(void *ctx, const u8 *addr, 169 int protection_type, int key_type) 170 { 171 wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d " 172 "key_type=%d)", 173 __func__, MAC2STR(addr), protection_type, key_type); 174 return 0; 175 } 176 177 178 static void supp_cancel_scan(void *ctx) 179 { 180 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 181 } 182 183 184 static void supp_cancel_auth_timeout(void *ctx) 185 { 186 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 187 } 188 189 190 static int supp_init(struct wpa *wpa) 191 { 192 struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx)); 193 if (ctx == NULL) 194 return -1; 195 196 ctx->ctx = wpa; 197 ctx->set_state = supp_set_state; 198 ctx->get_ssid = supp_get_ssid; 199 ctx->get_bssid = supp_get_bssid; 200 ctx->ether_send = supp_ether_send; 201 ctx->get_beacon_ie = supp_get_beacon_ie; 202 ctx->alloc_eapol = supp_alloc_eapol; 203 ctx->set_key = supp_set_key; 204 ctx->mlme_setprotection = supp_mlme_setprotection; 205 ctx->cancel_scan = supp_cancel_scan; 206 ctx->cancel_auth_timeout = supp_cancel_auth_timeout; 207 wpa->supp = wpa_sm_init(ctx); 208 if (wpa->supp == NULL) { 209 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed"); 210 return -1; 211 } 212 213 wpa_sm_set_own_addr(wpa->supp, wpa->supp_addr); 214 wpa_sm_set_param(wpa->supp, WPA_PARAM_RSN_ENABLED, 1); 215 wpa_sm_set_param(wpa->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN); 216 wpa_sm_set_param(wpa->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP); 217 wpa_sm_set_param(wpa->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP); 218 wpa_sm_set_param(wpa->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK); 219 wpa_sm_set_pmk(wpa->supp, wpa->psk, PMK_LEN); 220 221 wpa->supp_ie_len = sizeof(wpa->supp_ie); 222 if (wpa_sm_set_assoc_wpa_ie_default(wpa->supp, wpa->supp_ie, 223 &wpa->supp_ie_len) < 0) { 224 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()" 225 " failed"); 226 return -1; 227 } 228 229 wpa_sm_notify_assoc(wpa->supp, wpa->auth_addr); 230 231 return 0; 232 } 233 234 235 static void auth_logger(void *ctx, const u8 *addr, logger_level level, 236 const char *txt) 237 { 238 if (addr) 239 wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s", 240 MAC2STR(addr), txt); 241 else 242 wpa_printf(MSG_DEBUG, "AUTH: %s", txt); 243 } 244 245 246 static void supp_eapol_rx(void *eloop_data, void *user_ctx) 247 { 248 struct wpa *wpa = eloop_data; 249 250 wpa_printf(MSG_DEBUG, "SUPP: RX EAPOL frame"); 251 wpa_sm_rx_eapol(wpa->supp, wpa->auth_addr, wpa->auth_eapol, 252 wpa->auth_eapol_len); 253 } 254 255 256 static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data, 257 size_t data_len, int encrypt) 258 { 259 struct wpa *wpa = ctx; 260 261 wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu " 262 "encrypt=%d)", 263 __func__, MAC2STR(addr), (unsigned long) data_len, encrypt); 264 265 os_free(wpa->auth_eapol); 266 wpa->auth_eapol = os_malloc(data_len); 267 if (wpa->auth_eapol == NULL) 268 return -1; 269 os_memcpy(wpa->auth_eapol_dst, addr, ETH_ALEN); 270 os_memcpy(wpa->auth_eapol, data, data_len); 271 wpa->auth_eapol_len = data_len; 272 eloop_register_timeout(0, 0, supp_eapol_rx, wpa, NULL); 273 274 return 0; 275 } 276 277 278 static const u8 * auth_get_psk(void *ctx, const u8 *addr, const u8 *prev_psk) 279 { 280 struct wpa *wpa = ctx; 281 wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)", 282 __func__, MAC2STR(addr), prev_psk); 283 if (prev_psk) 284 return NULL; 285 return wpa->psk; 286 } 287 288 289 static int auth_init_group(struct wpa *wpa) 290 { 291 struct wpa_auth_config conf; 292 struct wpa_auth_callbacks cb; 293 294 wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine"); 295 296 os_memset(&conf, 0, sizeof(conf)); 297 conf.wpa = 2; 298 conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK; 299 conf.wpa_pairwise = WPA_CIPHER_CCMP; 300 conf.rsn_pairwise = WPA_CIPHER_CCMP; 301 conf.wpa_group = WPA_CIPHER_CCMP; 302 conf.eapol_version = 2; 303 304 os_memset(&cb, 0, sizeof(cb)); 305 cb.ctx = wpa; 306 cb.logger = auth_logger; 307 cb.send_eapol = auth_send_eapol; 308 cb.get_psk = auth_get_psk; 309 310 wpa->auth_group = wpa_init(wpa->auth_addr, &conf, &cb); 311 if (wpa->auth_group == NULL) { 312 wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed"); 313 return -1; 314 } 315 316 return 0; 317 } 318 319 320 static int auth_init(struct wpa *wpa) 321 { 322 wpa->auth = wpa_auth_sta_init(wpa->auth_group, wpa->supp_addr); 323 if (wpa->auth == NULL) { 324 wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed"); 325 return -1; 326 } 327 328 if (wpa_validate_wpa_ie(wpa->auth_group, wpa->auth, wpa->supp_ie, 329 wpa->supp_ie_len, NULL, 0) != WPA_IE_OK) { 330 wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed"); 331 return -1; 332 } 333 334 wpa_auth_sm_event(wpa->auth, WPA_ASSOC); 335 336 wpa_auth_sta_associated(wpa->auth_group, wpa->auth); 337 338 return 0; 339 } 340 341 342 static void deinit(struct wpa *wpa) 343 { 344 wpa_auth_sta_deinit(wpa->auth); 345 wpa_sm_deinit(wpa->supp); 346 wpa_deinit(wpa->auth_group); 347 os_free(wpa->auth_eapol); 348 wpa->auth_eapol = NULL; 349 os_free(wpa->supp_eapol); 350 wpa->supp_eapol = NULL; 351 } 352 353 354 int main(int argc, char *argv[]) 355 { 356 struct wpa wpa; 357 358 if (os_program_init()) 359 return -1; 360 361 os_memset(&wpa, 0, sizeof(wpa)); 362 os_memset(wpa.auth_addr, 0x12, ETH_ALEN); 363 os_memset(wpa.supp_addr, 0x32, ETH_ALEN); 364 os_memset(wpa.psk, 0x44, PMK_LEN); 365 366 wpa_debug_level = 0; 367 wpa_debug_show_keys = 1; 368 369 if (eloop_init(&wpa)) { 370 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 371 return -1; 372 } 373 374 if (auth_init_group(&wpa) < 0) 375 return -1; 376 377 if (supp_init(&wpa) < 0) 378 return -1; 379 380 if (auth_init(&wpa) < 0) 381 return -1; 382 383 wpa_printf(MSG_DEBUG, "Starting eloop"); 384 eloop_run(); 385 wpa_printf(MSG_DEBUG, "eloop done"); 386 387 deinit(&wpa); 388 389 eloop_destroy(); 390 391 os_program_deinit(); 392 393 return 0; 394 } 395
