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1 /*
2  * WPA Supplicant - Glue code to setup EAPOL and RSN modules
3  * Copyright (c) 2003-2015, 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 "eapol_supp/eapol_supp_sm.h"
13 #include "eap_peer/eap.h"
14 #include "rsn_supp/wpa.h"
15 #include "eloop.h"
16 #include "config.h"
17 #include "l2_packet/l2_packet.h"
18 #include "common/wpa_common.h"
19 #include "wpa_supplicant_i.h"
20 #include "driver_i.h"
21 #include "rsn_supp/pmksa_cache.h"
22 #include "sme.h"
23 #include "common/ieee802_11_defs.h"
24 #include "common/wpa_ctrl.h"
25 #include "wpas_glue.h"
26 #include "wps_supplicant.h"
27 #include "bss.h"
28 #include "scan.h"
29 #include "notify.h"
30 #include "wpas_kay.h"
31 
32 
33 #ifndef CONFIG_NO_CONFIG_BLOBS
34 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
wpa_supplicant_set_config_blob(void * ctx,struct wpa_config_blob * blob)35 static void wpa_supplicant_set_config_blob(void *ctx,
36 					   struct wpa_config_blob *blob)
37 {
38 	struct wpa_supplicant *wpa_s = ctx;
39 	wpa_config_set_blob(wpa_s->conf, blob);
40 	if (wpa_s->conf->update_config) {
41 		int ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
42 		if (ret) {
43 			wpa_printf(MSG_DEBUG, "Failed to update config after "
44 				   "blob set");
45 		}
46 	}
47 }
48 
49 
50 static const struct wpa_config_blob *
wpa_supplicant_get_config_blob(void * ctx,const char * name)51 wpa_supplicant_get_config_blob(void *ctx, const char *name)
52 {
53 	struct wpa_supplicant *wpa_s = ctx;
54 	return wpa_config_get_blob(wpa_s->conf, name);
55 }
56 #endif /* defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) */
57 #endif /* CONFIG_NO_CONFIG_BLOBS */
58 
59 
60 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
wpa_alloc_eapol(const struct wpa_supplicant * wpa_s,u8 type,const void * data,u16 data_len,size_t * msg_len,void ** data_pos)61 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
62 			    const void *data, u16 data_len,
63 			    size_t *msg_len, void **data_pos)
64 {
65 	struct ieee802_1x_hdr *hdr;
66 
67 	*msg_len = sizeof(*hdr) + data_len;
68 	hdr = os_malloc(*msg_len);
69 	if (hdr == NULL)
70 		return NULL;
71 
72 	hdr->version = wpa_s->conf->eapol_version;
73 	hdr->type = type;
74 	hdr->length = host_to_be16(data_len);
75 
76 	if (data)
77 		os_memcpy(hdr + 1, data, data_len);
78 	else
79 		os_memset(hdr + 1, 0, data_len);
80 
81 	if (data_pos)
82 		*data_pos = hdr + 1;
83 
84 	return (u8 *) hdr;
85 }
86 
87 
88 /**
89  * wpa_ether_send - Send Ethernet frame
90  * @wpa_s: Pointer to wpa_supplicant data
91  * @dest: Destination MAC address
92  * @proto: Ethertype in host byte order
93  * @buf: Frame payload starting from IEEE 802.1X header
94  * @len: Frame payload length
95  * Returns: >=0 on success, <0 on failure
96  */
wpa_ether_send(struct wpa_supplicant * wpa_s,const u8 * dest,u16 proto,const u8 * buf,size_t len)97 static int wpa_ether_send(struct wpa_supplicant *wpa_s, const u8 *dest,
98 			  u16 proto, const u8 *buf, size_t len)
99 {
100 #ifdef CONFIG_TESTING_OPTIONS
101 	if (wpa_s->ext_eapol_frame_io && proto == ETH_P_EAPOL) {
102 		size_t hex_len = 2 * len + 1;
103 		char *hex = os_malloc(hex_len);
104 
105 		if (hex == NULL)
106 			return -1;
107 		wpa_snprintf_hex(hex, hex_len, buf, len);
108 		wpa_msg(wpa_s, MSG_INFO, "EAPOL-TX " MACSTR " %s",
109 			MAC2STR(dest), hex);
110 		os_free(hex);
111 		return 0;
112 	}
113 #endif /* CONFIG_TESTING_OPTIONS */
114 
115 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_CONTROL_PORT) {
116 		int encrypt = wpa_s->wpa &&
117 			wpa_sm_has_ptk_installed(wpa_s->wpa);
118 
119 		return wpa_drv_tx_control_port(wpa_s, dest, proto, buf, len,
120 					       !encrypt);
121 	}
122 
123 	if (wpa_s->l2) {
124 		return l2_packet_send(wpa_s->l2, dest, proto, buf, len);
125 	}
126 
127 	return -1;
128 }
129 #endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */
130 
131 
132 #ifdef IEEE8021X_EAPOL
133 
134 /**
135  * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator
136  * @ctx: Pointer to wpa_supplicant data (wpa_s)
137  * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*)
138  * @buf: EAPOL payload (after IEEE 802.1X header)
139  * @len: EAPOL payload length
140  * Returns: >=0 on success, <0 on failure
141  *
142  * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame
143  * to the current Authenticator.
144  */
wpa_supplicant_eapol_send(void * ctx,int type,const u8 * buf,size_t len)145 static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
146 				     size_t len)
147 {
148 	struct wpa_supplicant *wpa_s = ctx;
149 	u8 *msg, *dst, bssid[ETH_ALEN];
150 	size_t msglen;
151 	int res;
152 
153 	/* TODO: could add l2_packet_sendmsg that allows fragments to avoid
154 	 * extra copy here */
155 
156 	if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
157 	    wpa_s->key_mgmt == WPA_KEY_MGMT_OWE ||
158 	    wpa_s->key_mgmt == WPA_KEY_MGMT_DPP ||
159 	    wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
160 		/* Current SSID is not using IEEE 802.1X/EAP, so drop possible
161 		 * EAPOL frames (mainly, EAPOL-Start) from EAPOL state
162 		 * machines. */
163 		wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X "
164 			   "mode (type=%d len=%lu)", type,
165 			   (unsigned long) len);
166 		return -1;
167 	}
168 
169 	if (pmksa_cache_get_current(wpa_s->wpa) &&
170 	    type == IEEE802_1X_TYPE_EAPOL_START) {
171 		/*
172 		 * We were trying to use PMKSA caching and sending EAPOL-Start
173 		 * would abort that and trigger full EAPOL authentication.
174 		 * However, we've already waited for the AP/Authenticator to
175 		 * start 4-way handshake or EAP authentication, and apparently
176 		 * it has not done so since the startWhen timer has reached zero
177 		 * to get the state machine sending EAPOL-Start. This is not
178 		 * really supposed to happen, but an interoperability issue with
179 		 * a deployed AP has been identified where the connection fails
180 		 * due to that AP failing to operate correctly if PMKID is
181 		 * included in the Association Request frame. To work around
182 		 * this, assume PMKSA caching failed and try to initiate full
183 		 * EAP authentication.
184 		 */
185 		if (!wpa_s->current_ssid ||
186 		    wpa_s->current_ssid->eap_workaround) {
187 			wpa_printf(MSG_DEBUG,
188 				   "RSN: Timeout on waiting for the AP to initiate 4-way handshake for PMKSA caching or EAP authentication - try to force it to start EAP authentication");
189 		} else {
190 			wpa_printf(MSG_DEBUG,
191 				   "RSN: PMKSA caching - do not send EAPOL-Start");
192 			return -1;
193 		}
194 	}
195 
196 	if (is_zero_ether_addr(wpa_s->bssid)) {
197 		wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an "
198 			   "EAPOL frame");
199 		if (wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
200 		    !is_zero_ether_addr(bssid)) {
201 			dst = bssid;
202 			wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR
203 				   " from the driver as the EAPOL destination",
204 				   MAC2STR(dst));
205 		} else {
206 			dst = wpa_s->last_eapol_src;
207 			wpa_printf(MSG_DEBUG, "Using the source address of the"
208 				   " last received EAPOL frame " MACSTR " as "
209 				   "the EAPOL destination",
210 				   MAC2STR(dst));
211 		}
212 	} else {
213 		/* BSSID was already set (from (Re)Assoc event, so use it as
214 		 * the EAPOL destination. */
215 		dst = wpa_s->bssid;
216 	}
217 
218 	msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL);
219 	if (msg == NULL)
220 		return -1;
221 
222 	wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst));
223 	wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen);
224 	res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen);
225 	os_free(msg);
226 	return res;
227 }
228 
229 
230 #ifdef CONFIG_WEP
231 /**
232  * wpa_eapol_set_wep_key - set WEP key for the driver
233  * @ctx: Pointer to wpa_supplicant data (wpa_s)
234  * @unicast: 1 = individual unicast key, 0 = broadcast key
235  * @keyidx: WEP key index (0..3)
236  * @key: Pointer to key data
237  * @keylen: Key length in bytes
238  * Returns: 0 on success or < 0 on error.
239  */
wpa_eapol_set_wep_key(void * ctx,int unicast,int keyidx,const u8 * key,size_t keylen)240 static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx,
241 				 const u8 *key, size_t keylen)
242 {
243 	struct wpa_supplicant *wpa_s = ctx;
244 	if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
245 		int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 :
246 			WPA_CIPHER_WEP104;
247 		if (unicast)
248 			wpa_s->pairwise_cipher = cipher;
249 		else
250 			wpa_s->group_cipher = cipher;
251 	}
252 	return wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
253 			       unicast ? wpa_s->bssid : NULL,
254 			       keyidx, unicast, NULL, 0, key, keylen,
255 			       unicast ? KEY_FLAG_PAIRWISE_RX_TX :
256 			       KEY_FLAG_GROUP_RX_TX_DEFAULT);
257 }
258 #endif /* CONFIG_WEP */
259 
260 
wpa_supplicant_aborted_cached(void * ctx)261 static void wpa_supplicant_aborted_cached(void *ctx)
262 {
263 	struct wpa_supplicant *wpa_s = ctx;
264 	wpa_sm_aborted_cached(wpa_s->wpa);
265 }
266 
267 
result_str(enum eapol_supp_result result)268 static const char * result_str(enum eapol_supp_result result)
269 {
270 	switch (result) {
271 	case EAPOL_SUPP_RESULT_FAILURE:
272 		return "FAILURE";
273 	case EAPOL_SUPP_RESULT_SUCCESS:
274 		return "SUCCESS";
275 	case EAPOL_SUPP_RESULT_EXPECTED_FAILURE:
276 		return "EXPECTED_FAILURE";
277 	}
278 	return "?";
279 }
280 
281 
wpa_supplicant_eapol_cb(struct eapol_sm * eapol,enum eapol_supp_result result,void * ctx)282 static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol,
283 				    enum eapol_supp_result result,
284 				    void *ctx)
285 {
286 	struct wpa_supplicant *wpa_s = ctx;
287 	int res, pmk_len;
288 	u8 pmk[PMK_LEN];
289 
290 	wpa_printf(MSG_DEBUG, "EAPOL authentication completed - result=%s",
291 		   result_str(result));
292 
293 	if (wpas_wps_eapol_cb(wpa_s) > 0)
294 		return;
295 
296 	wpa_s->eap_expected_failure = result ==
297 		EAPOL_SUPP_RESULT_EXPECTED_FAILURE;
298 
299 	if (result != EAPOL_SUPP_RESULT_SUCCESS) {
300 		/*
301 		 * Make sure we do not get stuck here waiting for long EAPOL
302 		 * timeout if the AP does not disconnect in case of
303 		 * authentication failure.
304 		 */
305 		wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
306 	} else {
307 		ieee802_1x_notify_create_actor(wpa_s, wpa_s->last_eapol_src);
308 	}
309 
310 	if (result != EAPOL_SUPP_RESULT_SUCCESS ||
311 	    !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_8021X))
312 		return;
313 
314 	if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
315 		return;
316 
317 	wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
318 		   "handshake");
319 
320 	pmk_len = PMK_LEN;
321 	if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
322 #ifdef CONFIG_IEEE80211R
323 		u8 buf[2 * PMK_LEN];
324 		wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for "
325 			   "driver-based 4-way hs and FT");
326 		res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN);
327 		if (res == 0) {
328 			os_memcpy(pmk, buf + PMK_LEN, PMK_LEN);
329 			os_memset(buf, 0, sizeof(buf));
330 		}
331 #else /* CONFIG_IEEE80211R */
332 		res = -1;
333 #endif /* CONFIG_IEEE80211R */
334 	} else {
335 		res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
336 		if (res) {
337 			/*
338 			 * EAP-LEAP is an exception from other EAP methods: it
339 			 * uses only 16-byte PMK.
340 			 */
341 			res = eapol_sm_get_key(eapol, pmk, 16);
342 			pmk_len = 16;
343 		}
344 	}
345 
346 	if (res) {
347 		wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state "
348 			   "machines");
349 		return;
350 	}
351 
352 	wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way "
353 			"handshake", pmk, pmk_len);
354 
355 	if (wpa_drv_set_key(wpa_s, 0, NULL, 0, 0, NULL, 0, pmk,
356 			    pmk_len, KEY_FLAG_PMK)) {
357 		wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver");
358 	}
359 
360 	wpa_supplicant_cancel_scan(wpa_s);
361 	wpa_supplicant_cancel_auth_timeout(wpa_s);
362 	wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
363 
364 }
365 
366 
wpa_supplicant_notify_eapol_done(void * ctx)367 static void wpa_supplicant_notify_eapol_done(void *ctx)
368 {
369 	struct wpa_supplicant *wpa_s = ctx;
370 	wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete");
371 	if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
372 		wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE);
373 	} else {
374 		wpa_supplicant_cancel_auth_timeout(wpa_s);
375 		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
376 	}
377 }
378 
379 #endif /* IEEE8021X_EAPOL */
380 
381 
382 #ifndef CONFIG_NO_WPA
383 
wpa_get_beacon_ie(struct wpa_supplicant * wpa_s)384 static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s)
385 {
386 	int ret = 0;
387 	struct wpa_bss *curr = NULL, *bss;
388 	struct wpa_ssid *ssid = wpa_s->current_ssid;
389 	const u8 *ie;
390 
391 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
392 		if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0)
393 			continue;
394 		if (ssid == NULL ||
395 		    ((bss->ssid_len == ssid->ssid_len &&
396 		      os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) ||
397 		     ssid->ssid_len == 0)) {
398 			curr = bss;
399 			break;
400 		}
401 #ifdef CONFIG_OWE
402 		if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_OWE) &&
403 		    (bss->flags & WPA_BSS_OWE_TRANSITION)) {
404 			curr = bss;
405 			break;
406 		}
407 #endif /* CONFIG_OWE */
408 	}
409 
410 	if (curr) {
411 		ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE);
412 		if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
413 			ret = -1;
414 
415 		ie = wpa_bss_get_ie(curr, WLAN_EID_RSN);
416 		if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
417 			ret = -1;
418 
419 		ie = wpa_bss_get_ie(curr, WLAN_EID_RSNX);
420 		if (wpa_sm_set_ap_rsnxe(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
421 			ret = -1;
422 	} else {
423 		ret = -1;
424 	}
425 
426 	return ret;
427 }
428 
429 
wpa_supplicant_get_beacon_ie(void * ctx)430 static int wpa_supplicant_get_beacon_ie(void *ctx)
431 {
432 	struct wpa_supplicant *wpa_s = ctx;
433 	if (wpa_get_beacon_ie(wpa_s) == 0) {
434 		return 0;
435 	}
436 
437 	/* No WPA/RSN IE found in the cached scan results. Try to get updated
438 	 * scan results from the driver. */
439 	if (wpa_supplicant_update_scan_results(wpa_s) < 0)
440 		return -1;
441 
442 	return wpa_get_beacon_ie(wpa_s);
443 }
444 
445 
_wpa_alloc_eapol(void * wpa_s,u8 type,const void * data,u16 data_len,size_t * msg_len,void ** data_pos)446 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
447 			     const void *data, u16 data_len,
448 			     size_t *msg_len, void **data_pos)
449 {
450 	return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
451 }
452 
453 
_wpa_ether_send(void * wpa_s,const u8 * dest,u16 proto,const u8 * buf,size_t len)454 static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
455 			   const u8 *buf, size_t len)
456 {
457 	return wpa_ether_send(wpa_s, dest, proto, buf, len);
458 }
459 
460 
_wpa_supplicant_cancel_auth_timeout(void * wpa_s)461 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
462 {
463 	wpa_supplicant_cancel_auth_timeout(wpa_s);
464 }
465 
466 
_wpa_supplicant_set_state(void * wpa_s,enum wpa_states state)467 static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state)
468 {
469 	wpa_supplicant_set_state(wpa_s, state);
470 }
471 
472 
473 /**
474  * wpa_supplicant_get_state - Get the connection state
475  * @wpa_s: Pointer to wpa_supplicant data
476  * Returns: The current connection state (WPA_*)
477  */
wpa_supplicant_get_state(struct wpa_supplicant * wpa_s)478 static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s)
479 {
480 	return wpa_s->wpa_state;
481 }
482 
483 
_wpa_supplicant_get_state(void * wpa_s)484 static enum wpa_states _wpa_supplicant_get_state(void *wpa_s)
485 {
486 	return wpa_supplicant_get_state(wpa_s);
487 }
488 
489 
_wpa_supplicant_deauthenticate(void * wpa_s,u16 reason_code)490 static void _wpa_supplicant_deauthenticate(void *wpa_s, u16 reason_code)
491 {
492 	wpa_supplicant_deauthenticate(wpa_s, reason_code);
493 	/* Schedule a scan to make sure we continue looking for networks */
494 	wpa_supplicant_req_scan(wpa_s, 5, 0);
495 }
496 
497 
_wpa_supplicant_reconnect(void * wpa_s)498 static void _wpa_supplicant_reconnect(void *wpa_s)
499 {
500 	wpa_supplicant_reconnect(wpa_s);
501 }
502 
503 
wpa_supplicant_get_network_ctx(void * wpa_s)504 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
505 {
506 	return wpa_supplicant_get_ssid(wpa_s);
507 }
508 
509 
wpa_supplicant_get_bssid(void * ctx,u8 * bssid)510 static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid)
511 {
512 	struct wpa_supplicant *wpa_s = ctx;
513 	return wpa_drv_get_bssid(wpa_s, bssid);
514 }
515 
516 
wpa_supplicant_set_key(void * _wpa_s,enum wpa_alg alg,const u8 * addr,int key_idx,int set_tx,const u8 * seq,size_t seq_len,const u8 * key,size_t key_len,enum key_flag key_flag)517 static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg,
518 				  const u8 *addr, int key_idx, int set_tx,
519 				  const u8 *seq, size_t seq_len,
520 				  const u8 *key, size_t key_len,
521 				  enum key_flag key_flag)
522 {
523 	struct wpa_supplicant *wpa_s = _wpa_s;
524 	if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) {
525 		/* Clear the MIC error counter when setting a new PTK. */
526 		wpa_s->mic_errors_seen = 0;
527 	}
528 #ifdef CONFIG_TESTING_GET_GTK
529 	if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) &&
530 	    alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) {
531 		os_memcpy(wpa_s->last_gtk, key, key_len);
532 		wpa_s->last_gtk_len = key_len;
533 	}
534 #endif /* CONFIG_TESTING_GET_GTK */
535 #ifdef CONFIG_TESTING_OPTIONS
536 	if (addr && !is_broadcast_ether_addr(addr) &&
537 	    !(key_flag & KEY_FLAG_MODIFY)) {
538 		wpa_s->last_tk_alg = alg;
539 		os_memcpy(wpa_s->last_tk_addr, addr, ETH_ALEN);
540 		wpa_s->last_tk_key_idx = key_idx;
541 		if (key)
542 			os_memcpy(wpa_s->last_tk, key, key_len);
543 		wpa_s->last_tk_len = key_len;
544 	}
545 #endif /* CONFIG_TESTING_OPTIONS */
546 	return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
547 			       key, key_len, key_flag);
548 }
549 
550 
wpa_supplicant_mlme_setprotection(void * wpa_s,const u8 * addr,int protection_type,int key_type)551 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
552 					     int protection_type,
553 					     int key_type)
554 {
555 	return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type,
556 					  key_type);
557 }
558 
559 
wpas_get_network_ctx(struct wpa_supplicant * wpa_s,void * network_ctx)560 static struct wpa_ssid * wpas_get_network_ctx(struct wpa_supplicant *wpa_s,
561 					      void *network_ctx)
562 {
563 	struct wpa_ssid *ssid;
564 
565 	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
566 		if (network_ctx == ssid)
567 			return ssid;
568 	}
569 
570 	return NULL;
571 }
572 
573 
wpa_supplicant_add_pmkid(void * _wpa_s,void * network_ctx,const u8 * bssid,const u8 * pmkid,const u8 * fils_cache_id,const u8 * pmk,size_t pmk_len,u32 pmk_lifetime,u8 pmk_reauth_threshold)574 static int wpa_supplicant_add_pmkid(void *_wpa_s, void *network_ctx,
575 				    const u8 *bssid, const u8 *pmkid,
576 				    const u8 *fils_cache_id,
577 				    const u8 *pmk, size_t pmk_len,
578 				    u32 pmk_lifetime, u8 pmk_reauth_threshold)
579 {
580 	struct wpa_supplicant *wpa_s = _wpa_s;
581 	struct wpa_ssid *ssid;
582 	struct wpa_pmkid_params params;
583 
584 	os_memset(&params, 0, sizeof(params));
585 	ssid = wpas_get_network_ctx(wpa_s, network_ctx);
586 	if (ssid)
587 		wpa_msg(wpa_s, MSG_INFO, PMKSA_CACHE_ADDED MACSTR " %d",
588 			MAC2STR(bssid), ssid->id);
589 	if (ssid && fils_cache_id) {
590 		params.ssid = ssid->ssid;
591 		params.ssid_len = ssid->ssid_len;
592 		params.fils_cache_id = fils_cache_id;
593 	} else {
594 		params.bssid = bssid;
595 	}
596 
597 	params.pmkid = pmkid;
598 	params.pmk = pmk;
599 	params.pmk_len = pmk_len;
600 	params.pmk_lifetime = pmk_lifetime;
601 	params.pmk_reauth_threshold = pmk_reauth_threshold;
602 
603 	return wpa_drv_add_pmkid(wpa_s, &params);
604 }
605 
606 
wpa_supplicant_remove_pmkid(void * _wpa_s,void * network_ctx,const u8 * bssid,const u8 * pmkid,const u8 * fils_cache_id)607 static int wpa_supplicant_remove_pmkid(void *_wpa_s, void *network_ctx,
608 				       const u8 *bssid, const u8 *pmkid,
609 				       const u8 *fils_cache_id)
610 {
611 	struct wpa_supplicant *wpa_s = _wpa_s;
612 	struct wpa_ssid *ssid;
613 	struct wpa_pmkid_params params;
614 
615 	os_memset(&params, 0, sizeof(params));
616 	ssid = wpas_get_network_ctx(wpa_s, network_ctx);
617 	if (ssid)
618 		wpa_msg(wpa_s, MSG_INFO, PMKSA_CACHE_REMOVED MACSTR " %d",
619 			MAC2STR(bssid), ssid->id);
620 	if (ssid && fils_cache_id) {
621 		params.ssid = ssid->ssid;
622 		params.ssid_len = ssid->ssid_len;
623 		params.fils_cache_id = fils_cache_id;
624 	} else {
625 		params.bssid = bssid;
626 	}
627 
628 	params.pmkid = pmkid;
629 
630 	return wpa_drv_remove_pmkid(wpa_s, &params);
631 }
632 
633 
634 #ifdef CONFIG_IEEE80211R
wpa_supplicant_update_ft_ies(void * ctx,const u8 * md,const u8 * ies,size_t ies_len)635 static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md,
636 					const u8 *ies, size_t ies_len)
637 {
638 	struct wpa_supplicant *wpa_s = ctx;
639 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
640 		return sme_update_ft_ies(wpa_s, md, ies, ies_len);
641 	return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len);
642 }
643 
644 
wpa_supplicant_send_ft_action(void * ctx,u8 action,const u8 * target_ap,const u8 * ies,size_t ies_len)645 static int wpa_supplicant_send_ft_action(void *ctx, u8 action,
646 					 const u8 *target_ap,
647 					 const u8 *ies, size_t ies_len)
648 {
649 	struct wpa_supplicant *wpa_s = ctx;
650 	int ret;
651 	u8 *data, *pos;
652 	size_t data_len;
653 
654 	if (action != 1) {
655 		wpa_printf(MSG_ERROR, "Unsupported send_ft_action action %d",
656 			   action);
657 		return -1;
658 	}
659 
660 	/*
661 	 * Action frame payload:
662 	 * Category[1] = 6 (Fast BSS Transition)
663 	 * Action[1] = 1 (Fast BSS Transition Request)
664 	 * STA Address
665 	 * Target AP Address
666 	 * FT IEs
667 	 */
668 
669 	data_len = 2 + 2 * ETH_ALEN + ies_len;
670 	data = os_malloc(data_len);
671 	if (data == NULL)
672 		return -1;
673 	pos = data;
674 	*pos++ = 0x06; /* FT Action category */
675 	*pos++ = action;
676 	os_memcpy(pos, wpa_s->own_addr, ETH_ALEN);
677 	pos += ETH_ALEN;
678 	os_memcpy(pos, target_ap, ETH_ALEN);
679 	pos += ETH_ALEN;
680 	os_memcpy(pos, ies, ies_len);
681 
682 	ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0,
683 				  wpa_s->bssid, wpa_s->own_addr, wpa_s->bssid,
684 				  data, data_len, 0);
685 	os_free(data);
686 
687 	return ret;
688 }
689 
690 
wpa_supplicant_mark_authenticated(void * ctx,const u8 * target_ap)691 static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap)
692 {
693 	struct wpa_supplicant *wpa_s = ctx;
694 	struct wpa_driver_auth_params params;
695 	struct wpa_bss *bss;
696 
697 	bss = wpa_bss_get_bssid(wpa_s, target_ap);
698 	if (bss == NULL)
699 		return -1;
700 
701 	os_memset(&params, 0, sizeof(params));
702 	params.bssid = target_ap;
703 	params.freq = bss->freq;
704 	params.ssid = bss->ssid;
705 	params.ssid_len = bss->ssid_len;
706 	params.auth_alg = WPA_AUTH_ALG_FT;
707 	params.local_state_change = 1;
708 	return wpa_drv_authenticate(wpa_s, &params);
709 }
710 #endif /* CONFIG_IEEE80211R */
711 
712 
713 #ifdef CONFIG_TDLS
714 
wpa_supplicant_tdls_get_capa(void * ctx,int * tdls_supported,int * tdls_ext_setup,int * tdls_chan_switch)715 static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported,
716 					int *tdls_ext_setup,
717 					int *tdls_chan_switch)
718 {
719 	struct wpa_supplicant *wpa_s = ctx;
720 
721 	*tdls_supported = 0;
722 	*tdls_ext_setup = 0;
723 	*tdls_chan_switch = 0;
724 
725 	if (!wpa_s->drv_capa_known)
726 		return -1;
727 
728 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)
729 		*tdls_supported = 1;
730 
731 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP)
732 		*tdls_ext_setup = 1;
733 
734 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH)
735 		*tdls_chan_switch = 1;
736 
737 	return 0;
738 }
739 
740 
wpa_supplicant_send_tdls_mgmt(void * ctx,const u8 * dst,u8 action_code,u8 dialog_token,u16 status_code,u32 peer_capab,int initiator,const u8 * buf,size_t len)741 static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst,
742 					 u8 action_code, u8 dialog_token,
743 					 u16 status_code, u32 peer_capab,
744 					 int initiator, const u8 *buf,
745 					 size_t len)
746 {
747 	struct wpa_supplicant *wpa_s = ctx;
748 	return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token,
749 				      status_code, peer_capab, initiator, buf,
750 				      len);
751 }
752 
753 
wpa_supplicant_tdls_oper(void * ctx,int oper,const u8 * peer)754 static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer)
755 {
756 	struct wpa_supplicant *wpa_s = ctx;
757 	return wpa_drv_tdls_oper(wpa_s, oper, peer);
758 }
759 
760 
wpa_supplicant_tdls_peer_addset(void * ctx,const u8 * peer,int add,u16 aid,u16 capability,const u8 * supp_rates,size_t supp_rates_len,const struct ieee80211_ht_capabilities * ht_capab,const struct ieee80211_vht_capabilities * vht_capab,u8 qosinfo,int wmm,const u8 * ext_capab,size_t ext_capab_len,const u8 * supp_channels,size_t supp_channels_len,const u8 * supp_oper_classes,size_t supp_oper_classes_len)761 static int wpa_supplicant_tdls_peer_addset(
762 	void *ctx, const u8 *peer, int add, u16 aid, u16 capability,
763 	const u8 *supp_rates, size_t supp_rates_len,
764 	const struct ieee80211_ht_capabilities *ht_capab,
765 	const struct ieee80211_vht_capabilities *vht_capab,
766 	u8 qosinfo, int wmm, const u8 *ext_capab, size_t ext_capab_len,
767 	const u8 *supp_channels, size_t supp_channels_len,
768 	const u8 *supp_oper_classes, size_t supp_oper_classes_len)
769 {
770 	struct wpa_supplicant *wpa_s = ctx;
771 	struct hostapd_sta_add_params params;
772 
773 	os_memset(&params, 0, sizeof(params));
774 
775 	params.addr = peer;
776 	params.aid = aid;
777 	params.capability = capability;
778 	params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED;
779 
780 	/*
781 	 * Don't rely only on qosinfo for WMM capability. It may be 0 even when
782 	 * present. Allow the WMM IE to also indicate QoS support.
783 	 */
784 	if (wmm || qosinfo)
785 		params.flags |= WPA_STA_WMM;
786 
787 	params.ht_capabilities = ht_capab;
788 	params.vht_capabilities = vht_capab;
789 	params.qosinfo = qosinfo;
790 	params.listen_interval = 0;
791 	params.supp_rates = supp_rates;
792 	params.supp_rates_len = supp_rates_len;
793 	params.set = !add;
794 	params.ext_capab = ext_capab;
795 	params.ext_capab_len = ext_capab_len;
796 	params.supp_channels = supp_channels;
797 	params.supp_channels_len = supp_channels_len;
798 	params.supp_oper_classes = supp_oper_classes;
799 	params.supp_oper_classes_len = supp_oper_classes_len;
800 
801 	return wpa_drv_sta_add(wpa_s, &params);
802 }
803 
804 
wpa_supplicant_tdls_enable_channel_switch(void * ctx,const u8 * addr,u8 oper_class,const struct hostapd_freq_params * params)805 static int wpa_supplicant_tdls_enable_channel_switch(
806 	void *ctx, const u8 *addr, u8 oper_class,
807 	const struct hostapd_freq_params *params)
808 {
809 	struct wpa_supplicant *wpa_s = ctx;
810 
811 	return wpa_drv_tdls_enable_channel_switch(wpa_s, addr, oper_class,
812 						  params);
813 }
814 
815 
wpa_supplicant_tdls_disable_channel_switch(void * ctx,const u8 * addr)816 static int wpa_supplicant_tdls_disable_channel_switch(void *ctx, const u8 *addr)
817 {
818 	struct wpa_supplicant *wpa_s = ctx;
819 
820 	return wpa_drv_tdls_disable_channel_switch(wpa_s, addr);
821 }
822 
823 #endif /* CONFIG_TDLS */
824 
825 #endif /* CONFIG_NO_WPA */
826 
827 
wpa_supplicant_ctrl_req_from_string(const char * field)828 enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field)
829 {
830 	if (os_strcmp(field, "IDENTITY") == 0)
831 		return WPA_CTRL_REQ_EAP_IDENTITY;
832 	else if (os_strcmp(field, "PASSWORD") == 0)
833 		return WPA_CTRL_REQ_EAP_PASSWORD;
834 	else if (os_strcmp(field, "NEW_PASSWORD") == 0)
835 		return WPA_CTRL_REQ_EAP_NEW_PASSWORD;
836 	else if (os_strcmp(field, "PIN") == 0)
837 		return WPA_CTRL_REQ_EAP_PIN;
838 	else if (os_strcmp(field, "OTP") == 0)
839 		return WPA_CTRL_REQ_EAP_OTP;
840 	else if (os_strcmp(field, "PASSPHRASE") == 0)
841 		return WPA_CTRL_REQ_EAP_PASSPHRASE;
842 	else if (os_strcmp(field, "SIM") == 0)
843 		return WPA_CTRL_REQ_SIM;
844 	else if (os_strcmp(field, "PSK_PASSPHRASE") == 0)
845 		return WPA_CTRL_REQ_PSK_PASSPHRASE;
846 	else if (os_strcmp(field, "EXT_CERT_CHECK") == 0)
847 		return WPA_CTRL_REQ_EXT_CERT_CHECK;
848 	return WPA_CTRL_REQ_UNKNOWN;
849 }
850 
851 
wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,const char * default_txt,const char ** txt)852 const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,
853 					       const char *default_txt,
854 					       const char **txt)
855 {
856 	const char *ret = NULL;
857 
858 	*txt = default_txt;
859 
860 	switch (field) {
861 	case WPA_CTRL_REQ_EAP_IDENTITY:
862 		*txt = "Identity";
863 		ret = "IDENTITY";
864 		break;
865 	case WPA_CTRL_REQ_EAP_PASSWORD:
866 		*txt = "Password";
867 		ret = "PASSWORD";
868 		break;
869 	case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
870 		*txt = "New Password";
871 		ret = "NEW_PASSWORD";
872 		break;
873 	case WPA_CTRL_REQ_EAP_PIN:
874 		*txt = "PIN";
875 		ret = "PIN";
876 		break;
877 	case WPA_CTRL_REQ_EAP_OTP:
878 		ret = "OTP";
879 		break;
880 	case WPA_CTRL_REQ_EAP_PASSPHRASE:
881 		*txt = "Private key passphrase";
882 		ret = "PASSPHRASE";
883 		break;
884 	case WPA_CTRL_REQ_SIM:
885 		ret = "SIM";
886 		break;
887 	case WPA_CTRL_REQ_PSK_PASSPHRASE:
888 		*txt = "PSK or passphrase";
889 		ret = "PSK_PASSPHRASE";
890 		break;
891 	case WPA_CTRL_REQ_EXT_CERT_CHECK:
892 		*txt = "External server certificate validation";
893 		ret = "EXT_CERT_CHECK";
894 		break;
895 	default:
896 		break;
897 	}
898 
899 	/* txt needs to be something */
900 	if (*txt == NULL) {
901 		wpa_printf(MSG_WARNING, "No message for request %d", field);
902 		ret = NULL;
903 	}
904 
905 	return ret;
906 }
907 
908 
wpas_send_ctrl_req(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const char * field_name,const char * txt)909 void wpas_send_ctrl_req(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
910 			const char *field_name, const char *txt)
911 {
912 	char *buf;
913 	size_t buflen;
914 	int len;
915 
916 	buflen = 100 + os_strlen(txt) + ssid->ssid_len;
917 	buf = os_malloc(buflen);
918 	if (buf == NULL)
919 		return;
920 	len = os_snprintf(buf, buflen, "%s-%d:%s needed for SSID ",
921 			  field_name, ssid->id, txt);
922 	if (os_snprintf_error(buflen, len)) {
923 		os_free(buf);
924 		return;
925 	}
926 	if (ssid->ssid && buflen > len + ssid->ssid_len) {
927 		os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
928 		len += ssid->ssid_len;
929 		buf[len] = '\0';
930 	}
931 	buf[buflen - 1] = '\0';
932 	wpa_msg(wpa_s, MSG_INFO, WPA_CTRL_REQ "%s", buf);
933 	os_free(buf);
934 }
935 
936 
937 #ifdef IEEE8021X_EAPOL
938 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
wpa_supplicant_eap_param_needed(void * ctx,enum wpa_ctrl_req_type field,const char * default_txt)939 static void wpa_supplicant_eap_param_needed(void *ctx,
940 					    enum wpa_ctrl_req_type field,
941 					    const char *default_txt)
942 {
943 	struct wpa_supplicant *wpa_s = ctx;
944 	struct wpa_ssid *ssid = wpa_s->current_ssid;
945 	const char *field_name, *txt = NULL;
946 
947 	if (ssid == NULL)
948 		return;
949 
950 	if (field == WPA_CTRL_REQ_EXT_CERT_CHECK)
951 		ssid->eap.pending_ext_cert_check = PENDING_CHECK;
952 	wpas_notify_network_request(wpa_s, ssid, field, default_txt);
953 
954 	field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt,
955 						       &txt);
956 	if (field_name == NULL) {
957 		wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed",
958 			   field);
959 		return;
960 	}
961 
962 	wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name);
963 
964 	wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
965 }
966 #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
967 #define wpa_supplicant_eap_param_needed NULL
968 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
969 
970 
971 #ifdef CONFIG_EAP_PROXY
972 
wpa_supplicant_eap_proxy_cb(void * ctx)973 static void wpa_supplicant_eap_proxy_cb(void *ctx)
974 {
975 	struct wpa_supplicant *wpa_s = ctx;
976 	size_t len;
977 
978 	wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1,
979 						     wpa_s->imsi, &len);
980 	if (wpa_s->mnc_len > 0) {
981 		wpa_s->imsi[len] = '\0';
982 		wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
983 			   wpa_s->imsi, wpa_s->mnc_len);
984 	} else {
985 		wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
986 	}
987 }
988 
989 
wpa_sm_sim_state_error_handler(struct wpa_supplicant * wpa_s)990 static void wpa_sm_sim_state_error_handler(struct wpa_supplicant *wpa_s)
991 {
992 	int i;
993 	struct wpa_ssid *ssid;
994 	const struct eap_method_type *eap_methods;
995 
996 	if (!wpa_s->conf)
997 		return;
998 
999 	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)	{
1000 		eap_methods = ssid->eap.eap_methods;
1001 		if (!eap_methods)
1002 			continue;
1003 
1004 		for (i = 0; eap_methods[i].method != EAP_TYPE_NONE; i++) {
1005 			if (eap_methods[i].vendor == EAP_VENDOR_IETF &&
1006 			    (eap_methods[i].method == EAP_TYPE_SIM ||
1007 			     eap_methods[i].method == EAP_TYPE_AKA ||
1008 			     eap_methods[i].method == EAP_TYPE_AKA_PRIME)) {
1009 				wpa_sm_pmksa_cache_flush(wpa_s->wpa, ssid);
1010 				break;
1011 			}
1012 		}
1013 	}
1014 }
1015 
1016 
1017 static void
wpa_supplicant_eap_proxy_notify_sim_status(void * ctx,enum eap_proxy_sim_state sim_state)1018 wpa_supplicant_eap_proxy_notify_sim_status(void *ctx,
1019 					   enum eap_proxy_sim_state sim_state)
1020 {
1021 	struct wpa_supplicant *wpa_s = ctx;
1022 
1023 	wpa_printf(MSG_DEBUG, "eap_proxy: SIM card status %u", sim_state);
1024 	switch (sim_state) {
1025 	case SIM_STATE_ERROR:
1026 		wpa_sm_sim_state_error_handler(wpa_s);
1027 		break;
1028 	default:
1029 		wpa_printf(MSG_DEBUG, "eap_proxy: SIM card status unknown");
1030 		break;
1031 	}
1032 }
1033 
1034 #endif /* CONFIG_EAP_PROXY */
1035 
1036 
wpa_supplicant_port_cb(void * ctx,int authorized)1037 static void wpa_supplicant_port_cb(void *ctx, int authorized)
1038 {
1039 	struct wpa_supplicant *wpa_s = ctx;
1040 #ifdef CONFIG_AP
1041 	if (wpa_s->ap_iface) {
1042 		wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant "
1043 			   "port status: %s",
1044 			   authorized ? "Authorized" : "Unauthorized");
1045 		return;
1046 	}
1047 #endif /* CONFIG_AP */
1048 	wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s",
1049 		   authorized ? "Authorized" : "Unauthorized");
1050 	wpa_drv_set_supp_port(wpa_s, authorized);
1051 }
1052 
1053 
wpa_supplicant_cert_cb(void * ctx,struct tls_cert_data * cert,const char * cert_hash)1054 static void wpa_supplicant_cert_cb(void *ctx, struct tls_cert_data *cert,
1055 				   const char *cert_hash)
1056 {
1057 	struct wpa_supplicant *wpa_s = ctx;
1058 
1059 	wpas_notify_certification(wpa_s, cert, cert_hash);
1060 }
1061 
1062 
wpa_supplicant_status_cb(void * ctx,const char * status,const char * parameter)1063 static void wpa_supplicant_status_cb(void *ctx, const char *status,
1064 				     const char *parameter)
1065 {
1066 	struct wpa_supplicant *wpa_s = ctx;
1067 
1068 	wpas_notify_eap_status(wpa_s, status, parameter);
1069 }
1070 
1071 
wpa_supplicant_eap_error_cb(void * ctx,int error_code)1072 static void wpa_supplicant_eap_error_cb(void *ctx, int error_code)
1073 {
1074 	struct wpa_supplicant *wpa_s = ctx;
1075 
1076 	wpas_notify_eap_error(wpa_s, error_code);
1077 }
1078 
1079 
wpa_supplicant_eap_auth_start_cb(void * ctx)1080 static int wpa_supplicant_eap_auth_start_cb(void *ctx)
1081 {
1082 	struct wpa_supplicant *wpa_s = ctx;
1083 
1084 	if (!wpa_s->new_connection && wpa_s->deny_ptk0_rekey &&
1085 	    !wpa_sm_ext_key_id_active(wpa_s->wpa)) {
1086 		wpa_msg(wpa_s, MSG_INFO,
1087 			"WPA: PTK0 rekey not allowed, reconnecting");
1088 		wpa_supplicant_reconnect(wpa_s);
1089 		return -1;
1090 	}
1091 	return 0;
1092 }
1093 
1094 
wpa_supplicant_set_anon_id(void * ctx,const u8 * id,size_t len)1095 static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len)
1096 {
1097 	struct wpa_supplicant *wpa_s = ctx;
1098 	char *str;
1099 	int res;
1100 
1101 	wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity",
1102 			  id, len);
1103 
1104 	if (wpa_s->current_ssid == NULL)
1105 		return;
1106 
1107 	if (id == NULL) {
1108 		if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
1109 				   "NULL", 0) < 0)
1110 			return;
1111 	} else {
1112 		str = os_malloc(len * 2 + 1);
1113 		if (str == NULL)
1114 			return;
1115 		wpa_snprintf_hex(str, len * 2 + 1, id, len);
1116 		res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
1117 				     str, 0);
1118 		os_free(str);
1119 		if (res < 0)
1120 			return;
1121 	}
1122 
1123 	if (wpa_s->conf->update_config) {
1124 		res = wpa_config_write(wpa_s->confname, wpa_s->conf);
1125 		if (res) {
1126 			wpa_printf(MSG_DEBUG, "Failed to update config after "
1127 				   "anonymous_id update");
1128 		}
1129 	}
1130 }
1131 #endif /* IEEE8021X_EAPOL */
1132 
1133 
wpa_supplicant_init_eapol(struct wpa_supplicant * wpa_s)1134 int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
1135 {
1136 #ifdef IEEE8021X_EAPOL
1137 	struct eapol_ctx *ctx;
1138 	ctx = os_zalloc(sizeof(*ctx));
1139 	if (ctx == NULL) {
1140 		wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context.");
1141 		return -1;
1142 	}
1143 
1144 	ctx->ctx = wpa_s;
1145 	ctx->msg_ctx = wpa_s;
1146 	ctx->eapol_send_ctx = wpa_s;
1147 	ctx->preauth = 0;
1148 	ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done;
1149 	ctx->eapol_send = wpa_supplicant_eapol_send;
1150 #ifdef CONFIG_WEP
1151 	ctx->set_wep_key = wpa_eapol_set_wep_key;
1152 #endif /* CONFIG_WEP */
1153 #ifndef CONFIG_NO_CONFIG_BLOBS
1154 	ctx->set_config_blob = wpa_supplicant_set_config_blob;
1155 	ctx->get_config_blob = wpa_supplicant_get_config_blob;
1156 #endif /* CONFIG_NO_CONFIG_BLOBS */
1157 	ctx->aborted_cached = wpa_supplicant_aborted_cached;
1158 	ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
1159 	ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
1160 	ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
1161 	ctx->openssl_ciphers = wpa_s->conf->openssl_ciphers;
1162 	ctx->wps = wpa_s->wps;
1163 	ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
1164 #ifdef CONFIG_EAP_PROXY
1165 	ctx->eap_proxy_cb = wpa_supplicant_eap_proxy_cb;
1166 	ctx->eap_proxy_notify_sim_status =
1167 		wpa_supplicant_eap_proxy_notify_sim_status;
1168 #endif /* CONFIG_EAP_PROXY */
1169 	ctx->port_cb = wpa_supplicant_port_cb;
1170 	ctx->cb = wpa_supplicant_eapol_cb;
1171 	ctx->cert_cb = wpa_supplicant_cert_cb;
1172 	ctx->cert_in_cb = wpa_s->conf->cert_in_cb;
1173 	ctx->status_cb = wpa_supplicant_status_cb;
1174 	ctx->eap_error_cb = wpa_supplicant_eap_error_cb;
1175 	ctx->confirm_auth_cb = wpa_supplicant_eap_auth_start_cb;
1176 	ctx->set_anon_id = wpa_supplicant_set_anon_id;
1177 	ctx->cb_ctx = wpa_s;
1178 	wpa_s->eapol = eapol_sm_init(ctx);
1179 	if (wpa_s->eapol == NULL) {
1180 		os_free(ctx);
1181 		wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state "
1182 			   "machines.");
1183 		return -1;
1184 	}
1185 #endif /* IEEE8021X_EAPOL */
1186 
1187 	return 0;
1188 }
1189 
1190 
1191 #ifndef CONFIG_NO_WPA
1192 
wpa_supplicant_set_rekey_offload(void * ctx,const u8 * kek,size_t kek_len,const u8 * kck,size_t kck_len,const u8 * replay_ctr)1193 static void wpa_supplicant_set_rekey_offload(void *ctx,
1194 					     const u8 *kek, size_t kek_len,
1195 					     const u8 *kck, size_t kck_len,
1196 					     const u8 *replay_ctr)
1197 {
1198 	struct wpa_supplicant *wpa_s = ctx;
1199 
1200 	wpa_drv_set_rekey_info(wpa_s, kek, kek_len, kck, kck_len, replay_ctr);
1201 }
1202 
1203 
wpa_supplicant_key_mgmt_set_pmk(void * ctx,const u8 * pmk,size_t pmk_len)1204 static int wpa_supplicant_key_mgmt_set_pmk(void *ctx, const u8 *pmk,
1205 					   size_t pmk_len)
1206 {
1207 	struct wpa_supplicant *wpa_s = ctx;
1208 
1209 	if (wpa_s->conf->key_mgmt_offload &&
1210 	    (wpa_s->drv_flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
1211 		return wpa_drv_set_key(wpa_s, 0, NULL, 0, 0,
1212 				       NULL, 0, pmk, pmk_len, KEY_FLAG_PMK);
1213 	else
1214 		return 0;
1215 }
1216 
1217 
wpa_supplicant_fils_hlp_rx(void * ctx,const u8 * dst,const u8 * src,const u8 * pkt,size_t pkt_len)1218 static void wpa_supplicant_fils_hlp_rx(void *ctx, const u8 *dst, const u8 *src,
1219 				       const u8 *pkt, size_t pkt_len)
1220 {
1221 	struct wpa_supplicant *wpa_s = ctx;
1222 	char *hex;
1223 	size_t hexlen;
1224 
1225 	hexlen = pkt_len * 2 + 1;
1226 	hex = os_malloc(hexlen);
1227 	if (!hex)
1228 		return;
1229 	wpa_snprintf_hex(hex, hexlen, pkt, pkt_len);
1230 	wpa_msg(wpa_s, MSG_INFO, FILS_HLP_RX "dst=" MACSTR " src=" MACSTR
1231 		" frame=%s", MAC2STR(dst), MAC2STR(src), hex);
1232 	os_free(hex);
1233 }
1234 
1235 
wpa_supplicant_channel_info(void * _wpa_s,struct wpa_channel_info * ci)1236 static int wpa_supplicant_channel_info(void *_wpa_s,
1237 				       struct wpa_channel_info *ci)
1238 {
1239 	struct wpa_supplicant *wpa_s = _wpa_s;
1240 
1241 	return wpa_drv_channel_info(wpa_s, ci);
1242 }
1243 
1244 
disable_wpa_wpa2(struct wpa_ssid * ssid)1245 static void disable_wpa_wpa2(struct wpa_ssid *ssid)
1246 {
1247 	ssid->proto &= ~WPA_PROTO_WPA;
1248 	ssid->proto |= WPA_PROTO_RSN;
1249 	ssid->key_mgmt &= ~(WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
1250 			    WPA_KEY_MGMT_PSK_SHA256);
1251 	ssid->group_cipher &= ~WPA_CIPHER_TKIP;
1252 	if (!(ssid->group_cipher & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1253 				    WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP_256)))
1254 		ssid->group_cipher |= WPA_CIPHER_CCMP;
1255 	ssid->ieee80211w = MGMT_FRAME_PROTECTION_REQUIRED;
1256 }
1257 
1258 
wpa_supplicant_transition_disable(void * _wpa_s,u8 bitmap)1259 static void wpa_supplicant_transition_disable(void *_wpa_s, u8 bitmap)
1260 {
1261 	struct wpa_supplicant *wpa_s = _wpa_s;
1262 	struct wpa_ssid *ssid;
1263 	int changed = 0;
1264 
1265 	wpa_msg(wpa_s, MSG_INFO, TRANSITION_DISABLE "%02x", bitmap);
1266 
1267 	ssid = wpa_s->current_ssid;
1268 	if (!ssid)
1269 		return;
1270 
1271 	if ((bitmap & TRANSITION_DISABLE_WPA3_PERSONAL) &&
1272 	    wpa_key_mgmt_sae(wpa_s->key_mgmt) &&
1273 	    (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)) &&
1274 	    (ssid->ieee80211w != MGMT_FRAME_PROTECTION_REQUIRED ||
1275 	     (ssid->group_cipher & WPA_CIPHER_TKIP))) {
1276 		wpa_printf(MSG_DEBUG,
1277 			   "WPA3-Personal transition mode disabled based on AP notification");
1278 		disable_wpa_wpa2(ssid);
1279 		changed = 1;
1280 	}
1281 
1282 	if ((bitmap & TRANSITION_DISABLE_WPA3_ENTERPRISE) &&
1283 	    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
1284 	    (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X |
1285 			       WPA_KEY_MGMT_FT_IEEE8021X |
1286 			       WPA_KEY_MGMT_IEEE8021X_SHA256)) &&
1287 	    (ssid->ieee80211w != MGMT_FRAME_PROTECTION_REQUIRED ||
1288 	     (ssid->group_cipher & WPA_CIPHER_TKIP))) {
1289 		disable_wpa_wpa2(ssid);
1290 		changed = 1;
1291 	}
1292 
1293 	if ((bitmap & TRANSITION_DISABLE_ENHANCED_OPEN) &&
1294 	    wpa_s->key_mgmt == WPA_KEY_MGMT_OWE &&
1295 	    (ssid->key_mgmt & WPA_KEY_MGMT_OWE) &&
1296 	    !ssid->owe_only) {
1297 		ssid->owe_only = 1;
1298 		changed = 1;
1299 	}
1300 
1301 	if (!changed)
1302 		return;
1303 
1304 #ifndef CONFIG_NO_CONFIG_WRITE
1305 	if (wpa_s->conf->update_config &&
1306 	    wpa_config_write(wpa_s->confname, wpa_s->conf))
1307 		wpa_printf(MSG_DEBUG, "Failed to update configuration");
1308 #endif /* CONFIG_NO_CONFIG_WRITE */
1309 }
1310 
1311 #endif /* CONFIG_NO_WPA */
1312 
1313 
wpa_supplicant_init_wpa(struct wpa_supplicant * wpa_s)1314 int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s)
1315 {
1316 #ifndef CONFIG_NO_WPA
1317 	struct wpa_sm_ctx *ctx;
1318 	ctx = os_zalloc(sizeof(*ctx));
1319 	if (ctx == NULL) {
1320 		wpa_printf(MSG_ERROR, "Failed to allocate WPA context.");
1321 		return -1;
1322 	}
1323 
1324 	ctx->ctx = wpa_s;
1325 	ctx->msg_ctx = wpa_s;
1326 	ctx->set_state = _wpa_supplicant_set_state;
1327 	ctx->get_state = _wpa_supplicant_get_state;
1328 	ctx->deauthenticate = _wpa_supplicant_deauthenticate;
1329 	ctx->reconnect = _wpa_supplicant_reconnect;
1330 	ctx->set_key = wpa_supplicant_set_key;
1331 	ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
1332 	ctx->get_bssid = wpa_supplicant_get_bssid;
1333 	ctx->ether_send = _wpa_ether_send;
1334 	ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
1335 	ctx->alloc_eapol = _wpa_alloc_eapol;
1336 	ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
1337 	ctx->add_pmkid = wpa_supplicant_add_pmkid;
1338 	ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
1339 #ifndef CONFIG_NO_CONFIG_BLOBS
1340 	ctx->set_config_blob = wpa_supplicant_set_config_blob;
1341 	ctx->get_config_blob = wpa_supplicant_get_config_blob;
1342 #endif /* CONFIG_NO_CONFIG_BLOBS */
1343 	ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
1344 #ifdef CONFIG_IEEE80211R
1345 	ctx->update_ft_ies = wpa_supplicant_update_ft_ies;
1346 	ctx->send_ft_action = wpa_supplicant_send_ft_action;
1347 	ctx->mark_authenticated = wpa_supplicant_mark_authenticated;
1348 #endif /* CONFIG_IEEE80211R */
1349 #ifdef CONFIG_TDLS
1350 	ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa;
1351 	ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt;
1352 	ctx->tdls_oper = wpa_supplicant_tdls_oper;
1353 	ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset;
1354 	ctx->tdls_enable_channel_switch =
1355 		wpa_supplicant_tdls_enable_channel_switch;
1356 	ctx->tdls_disable_channel_switch =
1357 		wpa_supplicant_tdls_disable_channel_switch;
1358 #endif /* CONFIG_TDLS */
1359 	ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload;
1360 	ctx->key_mgmt_set_pmk = wpa_supplicant_key_mgmt_set_pmk;
1361 	ctx->fils_hlp_rx = wpa_supplicant_fils_hlp_rx;
1362 	ctx->channel_info = wpa_supplicant_channel_info;
1363 	ctx->transition_disable = wpa_supplicant_transition_disable;
1364 
1365 	wpa_s->wpa = wpa_sm_init(ctx);
1366 	if (wpa_s->wpa == NULL) {
1367 		wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
1368 			   "machine");
1369 		os_free(ctx);
1370 		return -1;
1371 	}
1372 #endif /* CONFIG_NO_WPA */
1373 
1374 	return 0;
1375 }
1376 
1377 
wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)1378 void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
1379 					struct wpa_ssid *ssid)
1380 {
1381 	struct rsn_supp_config conf;
1382 	if (ssid) {
1383 		os_memset(&conf, 0, sizeof(conf));
1384 		conf.network_ctx = ssid;
1385 		conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
1386 #ifdef IEEE8021X_EAPOL
1387 		conf.proactive_key_caching = ssid->proactive_key_caching < 0 ?
1388 			wpa_s->conf->okc : ssid->proactive_key_caching;
1389 		conf.eap_workaround = ssid->eap_workaround;
1390 		conf.eap_conf_ctx = &ssid->eap;
1391 #endif /* IEEE8021X_EAPOL */
1392 		conf.ssid = ssid->ssid;
1393 		conf.ssid_len = ssid->ssid_len;
1394 		conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey;
1395 		conf.wpa_deny_ptk0_rekey = ssid->wpa_deny_ptk0_rekey;
1396 		conf.owe_ptk_workaround = ssid->owe_ptk_workaround;
1397 #ifdef CONFIG_P2P
1398 		if (ssid->p2p_group && wpa_s->current_bss &&
1399 		    !wpa_s->p2p_disable_ip_addr_req) {
1400 			struct wpabuf *p2p;
1401 			p2p = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss,
1402 							  P2P_IE_VENDOR_TYPE);
1403 			if (p2p) {
1404 				u8 group_capab;
1405 				group_capab = p2p_get_group_capab(p2p);
1406 				if (group_capab &
1407 				    P2P_GROUP_CAPAB_IP_ADDR_ALLOCATION)
1408 					conf.p2p = 1;
1409 				wpabuf_free(p2p);
1410 			}
1411 		}
1412 #endif /* CONFIG_P2P */
1413 		conf.wpa_rsc_relaxation = wpa_s->conf->wpa_rsc_relaxation;
1414 #ifdef CONFIG_FILS
1415 		if (wpa_key_mgmt_fils(wpa_s->key_mgmt))
1416 			conf.fils_cache_id =
1417 				wpa_bss_get_fils_cache_id(wpa_s->current_bss);
1418 #endif /* CONFIG_FILS */
1419 		conf.beacon_prot = ssid->beacon_prot;
1420 	}
1421 	wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL);
1422 }
1423