1 /*
2  * WPA Supplicant - test code for pre-authentication
3  * Copyright (c) 2003-2007, 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  * IEEE 802.1X Supplicant test code (to be used in place of wpa_supplicant.c.
9  * Not used in production version.
10  */
11 
12 #include "includes.h"
13 #include <assert.h>
14 
15 #include "common.h"
16 #include "config.h"
17 #include "eapol_supp/eapol_supp_sm.h"
18 #include "eloop.h"
19 #include "rsn_supp/wpa.h"
20 #include "eap_peer/eap.h"
21 #include "wpa_supplicant_i.h"
22 #include "l2_packet/l2_packet.h"
23 #include "ctrl_iface.h"
24 #include "pcsc_funcs.h"
25 #include "rsn_supp/preauth.h"
26 #include "rsn_supp/pmksa_cache.h"
27 #include "drivers/driver.h"
28 
29 
30 struct wpa_driver_ops *wpa_drivers[] = { NULL };
31 
32 
33 struct preauth_test_data {
34 	int auth_timed_out;
35 };
36 
37 
38 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
39 {
40 	wpa_supplicant_deauthenticate(wpa_s, reason_code);
41 }
42 
43 
44 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
45 			    const void *data, u16 data_len,
46 			    size_t *msg_len, void **data_pos)
47 {
48 	struct ieee802_1x_hdr *hdr;
49 
50 	*msg_len = sizeof(*hdr) + data_len;
51 	hdr = os_malloc(*msg_len);
52 	if (hdr == NULL)
53 		return NULL;
54 
55 	hdr->version = wpa_s->conf->eapol_version;
56 	hdr->type = type;
57 	hdr->length = htons(data_len);
58 
59 	if (data)
60 		os_memcpy(hdr + 1, data, data_len);
61 	else
62 		os_memset(hdr + 1, 0, data_len);
63 
64 	if (data_pos)
65 		*data_pos = hdr + 1;
66 
67 	return (u8 *) hdr;
68 }
69 
70 
71 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
72 			     const void *data, u16 data_len,
73 			     size_t *msg_len, void **data_pos)
74 {
75 	return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
76 }
77 
78 
79 static void _wpa_supplicant_set_state(void *ctx, enum wpa_states state)
80 {
81 	struct wpa_supplicant *wpa_s = ctx;
82 	wpa_s->wpa_state = state;
83 }
84 
85 
86 static enum wpa_states _wpa_supplicant_get_state(void *ctx)
87 {
88 	struct wpa_supplicant *wpa_s = ctx;
89 	return wpa_s->wpa_state;
90 }
91 
92 
93 static int wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
94 			  const u8 *buf, size_t len)
95 {
96 	printf("%s - not implemented\n", __func__);
97 	return -1;
98 }
99 
100 
101 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
102 {
103 	return wpa_supplicant_get_ssid(wpa_s);
104 }
105 
106 
107 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
108 {
109 	wpa_supplicant_cancel_auth_timeout(wpa_s);
110 }
111 
112 
113 static int wpa_supplicant_get_beacon_ie(void *wpa_s)
114 {
115 	printf("%s - not implemented\n", __func__);
116 	return -1;
117 }
118 
119 
120 static int wpa_supplicant_get_bssid(void *wpa_s, u8 *bssid)
121 {
122 	printf("%s - not implemented\n", __func__);
123 	return -1;
124 }
125 
126 
127 static int wpa_supplicant_set_key(void *wpa_s, enum wpa_alg alg,
128 				  const u8 *addr, int key_idx, int set_tx,
129 				  const u8 *seq, size_t seq_len,
130 				  const u8 *key, size_t key_len)
131 {
132 	printf("%s - not implemented\n", __func__);
133 	return -1;
134 }
135 
136 
137 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
138 					     int protection_type,
139 					     int key_type)
140 {
141 	printf("%s - not implemented\n", __func__);
142 	return -1;
143 }
144 
145 
146 static int wpa_supplicant_add_pmkid(void *wpa_s,
147 				    const u8 *bssid, const u8 *pmkid)
148 {
149 	printf("%s - not implemented\n", __func__);
150 	return -1;
151 }
152 
153 
154 static int wpa_supplicant_remove_pmkid(void *wpa_s,
155 				       const u8 *bssid, const u8 *pmkid)
156 {
157 	printf("%s - not implemented\n", __func__);
158 	return -1;
159 }
160 
161 
162 static void wpa_supplicant_set_config_blob(void *ctx,
163 					   struct wpa_config_blob *blob)
164 {
165 	struct wpa_supplicant *wpa_s = ctx;
166 	wpa_config_set_blob(wpa_s->conf, blob);
167 }
168 
169 
170 static const struct wpa_config_blob *
171 wpa_supplicant_get_config_blob(void *ctx, const char *name)
172 {
173 	struct wpa_supplicant *wpa_s = ctx;
174 	return wpa_config_get_blob(wpa_s->conf, name);
175 }
176 
177 
178 static void test_eapol_clean(struct wpa_supplicant *wpa_s)
179 {
180 	rsn_preauth_deinit(wpa_s->wpa);
181 	pmksa_candidate_free(wpa_s->wpa);
182 	wpa_sm_deinit(wpa_s->wpa);
183 	scard_deinit(wpa_s->scard);
184 	if (wpa_s->ctrl_iface) {
185 		wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
186 		wpa_s->ctrl_iface = NULL;
187 	}
188 	wpa_config_free(wpa_s->conf);
189 }
190 
191 
192 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
193 {
194 	struct preauth_test_data *p = eloop_ctx;
195 	printf("EAPOL test timed out\n");
196 	p->auth_timed_out = 1;
197 	eloop_terminate();
198 }
199 
200 
201 static void eapol_test_poll(void *eloop_ctx, void *timeout_ctx)
202 {
203 	struct wpa_supplicant *wpa_s = eloop_ctx;
204 	if (!rsn_preauth_in_progress(wpa_s->wpa))
205 		eloop_terminate();
206 	else {
207 		eloop_register_timeout(0, 100000, eapol_test_poll, eloop_ctx,
208 				       timeout_ctx);
209 	}
210 }
211 
212 
213 static struct wpa_driver_ops dummy_driver;
214 
215 
216 static void wpa_init_conf(struct wpa_supplicant *wpa_s, const char *ifname)
217 {
218 	struct l2_packet_data *l2;
219 	struct wpa_sm_ctx *ctx;
220 
221 	os_memset(&dummy_driver, 0, sizeof(dummy_driver));
222 	wpa_s->driver = &dummy_driver;
223 
224 	ctx = os_zalloc(sizeof(*ctx));
225 	assert(ctx != NULL);
226 
227 	ctx->ctx = wpa_s;
228 	ctx->msg_ctx = wpa_s;
229 	ctx->set_state = _wpa_supplicant_set_state;
230 	ctx->get_state = _wpa_supplicant_get_state;
231 	ctx->deauthenticate = _wpa_supplicant_deauthenticate;
232 	ctx->set_key = wpa_supplicant_set_key;
233 	ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
234 	ctx->get_bssid = wpa_supplicant_get_bssid;
235 	ctx->ether_send = wpa_ether_send;
236 	ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
237 	ctx->alloc_eapol = _wpa_alloc_eapol;
238 	ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
239 	ctx->add_pmkid = wpa_supplicant_add_pmkid;
240 	ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
241 	ctx->set_config_blob = wpa_supplicant_set_config_blob;
242 	ctx->get_config_blob = wpa_supplicant_get_config_blob;
243 	ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
244 
245 	wpa_s->wpa = wpa_sm_init(ctx);
246 	assert(wpa_s->wpa != NULL);
247 	wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, WPA_PROTO_RSN);
248 
249 	os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
250 	wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, NULL);
251 
252 	l2 = l2_packet_init(wpa_s->ifname, NULL, ETH_P_RSN_PREAUTH, NULL,
253 			    NULL, 0);
254 	assert(l2 != NULL);
255 	if (l2_packet_get_own_addr(l2, wpa_s->own_addr)) {
256 		wpa_printf(MSG_WARNING, "Failed to get own L2 address\n");
257 		exit(-1);
258 	}
259 	l2_packet_deinit(l2);
260 	wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
261 }
262 
263 
264 static void eapol_test_terminate(int sig, void *signal_ctx)
265 {
266 	struct wpa_supplicant *wpa_s = signal_ctx;
267 	wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
268 	eloop_terminate();
269 }
270 
271 
272 int main(int argc, char *argv[])
273 {
274 	struct wpa_supplicant wpa_s;
275 	int ret = 1;
276 	u8 bssid[ETH_ALEN];
277 	struct preauth_test_data preauth_test;
278 
279 	if (os_program_init())
280 		return -1;
281 
282 	os_memset(&preauth_test, 0, sizeof(preauth_test));
283 
284 	wpa_debug_level = 0;
285 	wpa_debug_show_keys = 1;
286 
287 	if (argc != 4) {
288 		printf("usage: preauth_test <conf> <target MAC address> "
289 		       "<ifname>\n");
290 		return -1;
291 	}
292 
293 	if (hwaddr_aton(argv[2], bssid)) {
294 		printf("Failed to parse target address '%s'.\n", argv[2]);
295 		return -1;
296 	}
297 
298 	if (eap_register_methods()) {
299 		wpa_printf(MSG_ERROR, "Failed to register EAP methods");
300 		return -1;
301 	}
302 
303 	if (eloop_init()) {
304 		wpa_printf(MSG_ERROR, "Failed to initialize event loop");
305 		return -1;
306 	}
307 
308 	os_memset(&wpa_s, 0, sizeof(wpa_s));
309 	wpa_s.conf = wpa_config_read(argv[1], NULL);
310 	if (wpa_s.conf == NULL) {
311 		printf("Failed to parse configuration file '%s'.\n", argv[1]);
312 		return -1;
313 	}
314 	if (wpa_s.conf->ssid == NULL) {
315 		printf("No networks defined.\n");
316 		return -1;
317 	}
318 
319 	wpa_init_conf(&wpa_s, argv[3]);
320 	wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
321 	if (wpa_s.ctrl_iface == NULL) {
322 		printf("Failed to initialize control interface '%s'.\n"
323 		       "You may have another preauth_test process already "
324 		       "running or the file was\n"
325 		       "left by an unclean termination of preauth_test in "
326 		       "which case you will need\n"
327 		       "to manually remove this file before starting "
328 		       "preauth_test again.\n",
329 		       wpa_s.conf->ctrl_interface);
330 		return -1;
331 	}
332 	if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
333 		return -1;
334 
335 	if (rsn_preauth_init(wpa_s.wpa, bssid, &wpa_s.conf->ssid->eap))
336 		return -1;
337 
338 	eloop_register_timeout(30, 0, eapol_test_timeout, &preauth_test, NULL);
339 	eloop_register_timeout(0, 100000, eapol_test_poll, &wpa_s, NULL);
340 	eloop_register_signal_terminate(eapol_test_terminate, &wpa_s);
341 	eloop_register_signal_reconfig(eapol_test_terminate, &wpa_s);
342 	eloop_run();
343 
344 	if (preauth_test.auth_timed_out)
345 		ret = -2;
346 	else {
347 		ret = pmksa_cache_set_current(wpa_s.wpa, NULL, bssid, NULL, 0)
348 			? 0 : -3;
349 	}
350 
351 	test_eapol_clean(&wpa_s);
352 
353 	eap_peer_unregister_methods();
354 
355 	eloop_destroy();
356 
357 	os_program_deinit();
358 
359 	return ret;
360 }
361