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      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