1 /* 2 * Test program for combined WPA authenticator/supplicant 3 * Copyright (c) 2006-2007, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "common/ieee802_11_defs.h" 14 #include "../config.h" 15 #include "rsn_supp/wpa.h" 16 #include "rsn_supp/wpa_ie.h" 17 #include "ap/wpa_auth.h" 18 19 20 extern int wpa_debug_level; 21 extern int wpa_debug_show_keys; 22 23 24 struct wpa { 25 u8 auth_addr[ETH_ALEN]; 26 u8 supp_addr[ETH_ALEN]; 27 u8 psk[PMK_LEN]; 28 29 /* from authenticator */ 30 u8 auth_eapol_dst[ETH_ALEN]; 31 u8 *auth_eapol; 32 size_t auth_eapol_len; 33 34 /* from supplicant */ 35 u8 *supp_eapol; 36 size_t supp_eapol_len; 37 38 struct wpa_sm *supp; 39 struct wpa_authenticator *auth_group; 40 struct wpa_state_machine *auth; 41 42 struct wpa_ssid ssid; 43 u8 supp_ie[80]; 44 size_t supp_ie_len; 45 }; 46 47 48 static int supp_get_bssid(void *ctx, u8 *bssid) 49 { 50 struct wpa *wpa = ctx; 51 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 52 os_memcpy(bssid, wpa->auth_addr, ETH_ALEN); 53 return 0; 54 } 55 56 57 static void supp_set_state(void *ctx, enum wpa_states state) 58 { 59 wpa_printf(MSG_DEBUG, "SUPP: %s(state=%d)", __func__, state); 60 } 61 62 63 static void auth_eapol_rx(void *eloop_data, void *user_ctx) 64 { 65 struct wpa *wpa = eloop_data; 66 67 wpa_printf(MSG_DEBUG, "AUTH: RX EAPOL frame"); 68 wpa_receive(wpa->auth_group, wpa->auth, wpa->supp_eapol, 69 wpa->supp_eapol_len); 70 } 71 72 73 static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf, 74 size_t len) 75 { 76 struct wpa *wpa = ctx; 77 78 wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x " 79 "len=%lu)", 80 __func__, MAC2STR(dest), proto, (unsigned long) len); 81 82 os_free(wpa->supp_eapol); 83 wpa->supp_eapol = os_malloc(len); 84 if (wpa->supp_eapol == NULL) 85 return -1; 86 os_memcpy(wpa->supp_eapol, buf, len); 87 wpa->supp_eapol_len = len; 88 eloop_register_timeout(0, 0, auth_eapol_rx, wpa, NULL); 89 90 return 0; 91 } 92 93 94 static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data, 95 u16 data_len, size_t *msg_len, void **data_pos) 96 { 97 struct ieee802_1x_hdr *hdr; 98 99 wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)", 100 __func__, type, data_len); 101 102 *msg_len = sizeof(*hdr) + data_len; 103 hdr = os_malloc(*msg_len); 104 if (hdr == NULL) 105 return NULL; 106 107 hdr->version = 2; 108 hdr->type = type; 109 hdr->length = host_to_be16(data_len); 110 111 if (data) 112 os_memcpy(hdr + 1, data, data_len); 113 else 114 os_memset(hdr + 1, 0, data_len); 115 116 if (data_pos) 117 *data_pos = hdr + 1; 118 119 return (u8 *) hdr; 120 } 121 122 123 static int supp_get_beacon_ie(void *ctx) 124 { 125 struct wpa *wpa = ctx; 126 const u8 *ie; 127 size_t ielen; 128 129 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 130 131 ie = wpa_auth_get_wpa_ie(wpa->auth_group, &ielen); 132 if (ie == NULL || ielen < 1) 133 return -1; 134 if (ie[0] == WLAN_EID_RSN) 135 return wpa_sm_set_ap_rsn_ie(wpa->supp, ie, 2 + ie[1]); 136 return wpa_sm_set_ap_wpa_ie(wpa->supp, ie, 2 + ie[1]); 137 } 138 139 140 static int supp_set_key(void *ctx, enum wpa_alg alg, 141 const u8 *addr, int key_idx, int set_tx, 142 const u8 *seq, size_t seq_len, 143 const u8 *key, size_t key_len) 144 { 145 wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d " 146 "set_tx=%d)", 147 __func__, alg, MAC2STR(addr), key_idx, set_tx); 148 wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len); 149 wpa_hexdump(MSG_DEBUG, "SUPP: set_key - key", key, key_len); 150 return 0; 151 } 152 153 154 static int supp_mlme_setprotection(void *ctx, const u8 *addr, 155 int protection_type, int key_type) 156 { 157 wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d " 158 "key_type=%d)", 159 __func__, MAC2STR(addr), protection_type, key_type); 160 return 0; 161 } 162 163 164 static void supp_cancel_auth_timeout(void *ctx) 165 { 166 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__); 167 } 168 169 170 static int supp_init(struct wpa *wpa) 171 { 172 struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx)); 173 if (ctx == NULL) 174 return -1; 175 176 ctx->ctx = wpa; 177 ctx->msg_ctx = wpa; 178 ctx->set_state = supp_set_state; 179 ctx->get_bssid = supp_get_bssid; 180 ctx->ether_send = supp_ether_send; 181 ctx->get_beacon_ie = supp_get_beacon_ie; 182 ctx->alloc_eapol = supp_alloc_eapol; 183 ctx->set_key = supp_set_key; 184 ctx->mlme_setprotection = supp_mlme_setprotection; 185 ctx->cancel_auth_timeout = supp_cancel_auth_timeout; 186 wpa->supp = wpa_sm_init(ctx); 187 if (wpa->supp == NULL) { 188 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed"); 189 return -1; 190 } 191 192 wpa_sm_set_own_addr(wpa->supp, wpa->supp_addr); 193 wpa_sm_set_param(wpa->supp, WPA_PARAM_RSN_ENABLED, 1); 194 wpa_sm_set_param(wpa->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN); 195 wpa_sm_set_param(wpa->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP); 196 wpa_sm_set_param(wpa->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP); 197 wpa_sm_set_param(wpa->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK); 198 wpa_sm_set_pmk(wpa->supp, wpa->psk, PMK_LEN); 199 200 wpa->supp_ie_len = sizeof(wpa->supp_ie); 201 if (wpa_sm_set_assoc_wpa_ie_default(wpa->supp, wpa->supp_ie, 202 &wpa->supp_ie_len) < 0) { 203 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()" 204 " failed"); 205 return -1; 206 } 207 208 wpa_sm_notify_assoc(wpa->supp, wpa->auth_addr); 209 210 return 0; 211 } 212 213 214 static void auth_logger(void *ctx, const u8 *addr, logger_level level, 215 const char *txt) 216 { 217 if (addr) 218 wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s", 219 MAC2STR(addr), txt); 220 else 221 wpa_printf(MSG_DEBUG, "AUTH: %s", txt); 222 } 223 224 225 static void supp_eapol_rx(void *eloop_data, void *user_ctx) 226 { 227 struct wpa *wpa = eloop_data; 228 229 wpa_printf(MSG_DEBUG, "SUPP: RX EAPOL frame"); 230 wpa_sm_rx_eapol(wpa->supp, wpa->auth_addr, wpa->auth_eapol, 231 wpa->auth_eapol_len); 232 } 233 234 235 static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data, 236 size_t data_len, int encrypt) 237 { 238 struct wpa *wpa = ctx; 239 240 wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu " 241 "encrypt=%d)", 242 __func__, MAC2STR(addr), (unsigned long) data_len, encrypt); 243 244 os_free(wpa->auth_eapol); 245 wpa->auth_eapol = os_malloc(data_len); 246 if (wpa->auth_eapol == NULL) 247 return -1; 248 os_memcpy(wpa->auth_eapol_dst, addr, ETH_ALEN); 249 os_memcpy(wpa->auth_eapol, data, data_len); 250 wpa->auth_eapol_len = data_len; 251 eloop_register_timeout(0, 0, supp_eapol_rx, wpa, NULL); 252 253 return 0; 254 } 255 256 257 static const u8 * auth_get_psk(void *ctx, const u8 *addr, const u8 *prev_psk) 258 { 259 struct wpa *wpa = ctx; 260 wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)", 261 __func__, MAC2STR(addr), prev_psk); 262 if (prev_psk) 263 return NULL; 264 return wpa->psk; 265 } 266 267 268 static int auth_init_group(struct wpa *wpa) 269 { 270 struct wpa_auth_config conf; 271 struct wpa_auth_callbacks cb; 272 273 wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine"); 274 275 os_memset(&conf, 0, sizeof(conf)); 276 conf.wpa = 2; 277 conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK; 278 conf.wpa_pairwise = WPA_CIPHER_CCMP; 279 conf.rsn_pairwise = WPA_CIPHER_CCMP; 280 conf.wpa_group = WPA_CIPHER_CCMP; 281 conf.eapol_version = 2; 282 283 os_memset(&cb, 0, sizeof(cb)); 284 cb.ctx = wpa; 285 cb.logger = auth_logger; 286 cb.send_eapol = auth_send_eapol; 287 cb.get_psk = auth_get_psk; 288 289 wpa->auth_group = wpa_init(wpa->auth_addr, &conf, &cb); 290 if (wpa->auth_group == NULL) { 291 wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed"); 292 return -1; 293 } 294 295 return 0; 296 } 297 298 299 static int auth_init(struct wpa *wpa) 300 { 301 wpa->auth = wpa_auth_sta_init(wpa->auth_group, wpa->supp_addr); 302 if (wpa->auth == NULL) { 303 wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed"); 304 return -1; 305 } 306 307 if (wpa_validate_wpa_ie(wpa->auth_group, wpa->auth, wpa->supp_ie, 308 wpa->supp_ie_len, NULL, 0) != WPA_IE_OK) { 309 wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed"); 310 return -1; 311 } 312 313 wpa_auth_sm_event(wpa->auth, WPA_ASSOC); 314 315 wpa_auth_sta_associated(wpa->auth_group, wpa->auth); 316 317 return 0; 318 } 319 320 321 static void deinit(struct wpa *wpa) 322 { 323 wpa_auth_sta_deinit(wpa->auth); 324 wpa_sm_deinit(wpa->supp); 325 wpa_deinit(wpa->auth_group); 326 os_free(wpa->auth_eapol); 327 wpa->auth_eapol = NULL; 328 os_free(wpa->supp_eapol); 329 wpa->supp_eapol = NULL; 330 } 331 332 333 int main(int argc, char *argv[]) 334 { 335 struct wpa wpa; 336 337 if (os_program_init()) 338 return -1; 339 340 os_memset(&wpa, 0, sizeof(wpa)); 341 os_memset(wpa.auth_addr, 0x12, ETH_ALEN); 342 os_memset(wpa.supp_addr, 0x32, ETH_ALEN); 343 os_memset(wpa.psk, 0x44, PMK_LEN); 344 345 wpa_debug_level = 0; 346 wpa_debug_show_keys = 1; 347 348 if (eloop_init()) { 349 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 350 return -1; 351 } 352 353 if (auth_init_group(&wpa) < 0) 354 return -1; 355 356 if (supp_init(&wpa) < 0) 357 return -1; 358 359 if (auth_init(&wpa) < 0) 360 return -1; 361 362 wpa_printf(MSG_DEBUG, "Starting eloop"); 363 eloop_run(); 364 wpa_printf(MSG_DEBUG, "eloop done"); 365 366 deinit(&wpa); 367 368 eloop_destroy(); 369 370 os_program_deinit(); 371 372 return 0; 373 } 374
