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