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