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1 | /* | |
2 | * WPA Supplicant - driver interaction with BSD net80211 layer | |
3 | * Copyright (c) 2004, Sam Leffler <sam@errno.com> | |
4 | * Copyright (c) 2004, 2Wire, Inc | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * Alternatively, this software may be distributed under the terms of BSD | |
11 | * license. | |
12 | * | |
13 | * See README and COPYING for more details. | |
14 | */ | |
15 | ||
16 | #include "includes.h" | |
17 | #include <sys/ioctl.h> | |
18 | ||
19 | #include "common.h" | |
20 | #include "driver.h" | |
21 | #include "eloop.h" | |
22 | #include "common/ieee802_11_defs.h" | |
23 | ||
24 | #include <net/if.h> | |
25 | #include <net/if_media.h> | |
26 | ||
27 | #ifdef __NetBSD__ | |
28 | #include <net/if_ether.h> | |
29 | #else | |
30 | #include <net/ethernet.h> | |
31 | #endif | |
32 | #include <net/route.h> | |
33 | ||
34 | #ifdef __DragonFly__ | |
35 | #include <netproto/802_11/ieee80211_ioctl.h> | |
36 | #include <netproto/802_11/ieee80211_dragonfly.h> | |
37 | #else /* __DragonFly__ */ | |
38 | #include <net80211/ieee80211.h> | |
39 | #include <net80211/ieee80211_ioctl.h> | |
40 | #include <net80211/ieee80211_crypto.h> | |
41 | #endif /* __DragonFly__ */ | |
42 | #if __FreeBSD__ | |
43 | #include <net80211/ieee80211_freebsd.h> | |
44 | #endif | |
45 | #if __NetBSD__ | |
46 | #include <net80211/ieee80211_netbsd.h> | |
47 | #endif | |
48 | ||
49 | #include "l2_packet/l2_packet.h" | |
50 | ||
51 | struct bsd_driver_data { | |
52 | struct hostapd_data *hapd; /* back pointer */ | |
53 | ||
54 | int sock; /* open socket for 802.11 ioctls */ | |
55 | struct l2_packet_data *sock_xmit;/* raw packet xmit socket */ | |
56 | int route; /* routing socket for events */ | |
57 | char ifname[IFNAMSIZ+1]; /* interface name */ | |
58 | unsigned int ifindex; /* interface index */ | |
59 | void *ctx; | |
60 | struct wpa_driver_capa capa; /* driver capability */ | |
61 | int is_ap; /* Access point mode */ | |
62 | int prev_roaming; /* roaming state to restore on deinit */ | |
63 | int prev_privacy; /* privacy state to restore on deinit */ | |
64 | int prev_wpa; /* wpa state to restore on deinit */ | |
65 | }; | |
66 | ||
67 | /* Generic functions for hostapd and wpa_supplicant */ | |
68 | ||
69 | static int | |
70 | bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len) | |
71 | { | |
72 | struct ieee80211req ireq; | |
73 | ||
74 | os_memset(&ireq, 0, sizeof(ireq)); | |
75 | os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name)); | |
76 | ireq.i_type = op; | |
77 | ireq.i_len = arg_len; | |
78 | ireq.i_data = (void *) arg; | |
79 | ||
80 | if (ioctl(s, SIOCS80211, &ireq) < 0) { | |
81 | fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n", | |
82 | op, arg_len, strerror(errno)); | |
83 | return -1; | |
84 | } | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static int | |
89 | bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len) | |
90 | { | |
91 | struct ieee80211req ireq; | |
92 | ||
93 | os_memset(&ireq, 0, sizeof(ireq)); | |
94 | os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name)); | |
95 | ireq.i_type = op; | |
96 | ireq.i_len = arg_len; | |
97 | ireq.i_data = arg; | |
98 | ||
99 | if (ioctl(s, SIOCG80211, &ireq) < 0) { | |
100 | fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n", | |
101 | op, arg_len, strerror(errno)); | |
102 | return -1; | |
103 | } | |
104 | return ireq.i_len; | |
105 | } | |
106 | ||
107 | static int | |
108 | bsd_set80211param(int s, const char *ifname, int op, int arg) | |
109 | { | |
110 | struct ieee80211req ireq; | |
111 | ||
112 | os_memset(&ireq, 0, sizeof(ireq)); | |
113 | os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name)); | |
114 | ireq.i_type = op; | |
115 | ireq.i_val = arg; | |
116 | ||
117 | if (ioctl(s, SIOCS80211, &ireq) < 0) { | |
118 | fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n", | |
119 | op, arg, strerror(errno)); | |
120 | return -1; | |
121 | } | |
122 | return 0; | |
123 | } | |
124 | ||
125 | static int | |
126 | get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len) | |
127 | { | |
128 | return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len); | |
129 | } | |
130 | ||
131 | static int | |
132 | set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len) | |
133 | { | |
134 | return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len); | |
135 | } | |
136 | ||
137 | static int | |
138 | set80211param(struct bsd_driver_data *drv, int op, int arg) | |
139 | { | |
140 | return bsd_set80211param(drv->sock, drv->ifname, op, arg); | |
141 | } | |
142 | ||
143 | static int | |
144 | bsd_get_ssid(const char *ifname, void *priv, u8 *ssid, int len) | |
145 | { | |
146 | struct bsd_driver_data *drv = priv; | |
147 | #ifdef SIOCG80211NWID | |
148 | struct ieee80211_nwid nwid; | |
149 | struct ifreq ifr; | |
150 | ||
151 | os_memset(&ifr, 0, sizeof(ifr)); | |
152 | os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); | |
153 | ifr.ifr_data = (void *)&nwid; | |
154 | if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 || | |
155 | nwid.i_len > IEEE80211_NWID_LEN) | |
156 | return -1; | |
157 | os_memcpy(ssid, nwid.i_nwid, nwid.i_len); | |
158 | return nwid.i_len; | |
159 | #else | |
160 | return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN); | |
161 | #endif | |
162 | } | |
163 | ||
164 | static int | |
165 | bsd_set_ssid(const char *ifname, void *priv, const u8 *ssid, int ssid_len) | |
166 | { | |
167 | struct bsd_driver_data *drv = priv; | |
168 | #ifdef SIOCS80211NWID | |
169 | struct ieee80211_nwid nwid; | |
170 | struct ifreq ifr; | |
171 | ||
172 | os_memcpy(nwid.i_nwid, ssid, ssid_len); | |
173 | nwid.i_len = ssid_len; | |
174 | os_memset(&ifr, 0, sizeof(ifr)); | |
175 | os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); | |
176 | ifr.ifr_data = (void *)&nwid; | |
177 | return ioctl(drv->sock, SIOCS80211NWID, &ifr); | |
178 | #else | |
179 | return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len); | |
180 | #endif | |
181 | } | |
182 | ||
183 | static int | |
184 | bsd_get_if_media(void *priv) | |
185 | { | |
186 | struct bsd_driver_data *drv = priv; | |
187 | struct ifmediareq ifmr; | |
188 | ||
189 | os_memset(&ifmr, 0, sizeof(ifmr)); | |
190 | os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name)); | |
191 | ||
192 | if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) { | |
193 | wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__, | |
194 | strerror(errno)); | |
195 | return -1; | |
196 | } | |
197 | ||
198 | return ifmr.ifm_current; | |
199 | } | |
200 | ||
201 | static int | |
202 | bsd_set_if_media(void *priv, int media) | |
203 | { | |
204 | struct bsd_driver_data *drv = priv; | |
205 | struct ifreq ifr; | |
206 | ||
207 | os_memset(&ifr, 0, sizeof(ifr)); | |
208 | os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); | |
209 | ifr.ifr_media = media; | |
210 | ||
211 | if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) { | |
212 | wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__, | |
213 | strerror(errno)); | |
214 | return -1; | |
215 | } | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static int | |
221 | bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode) | |
222 | { | |
223 | int media = bsd_get_if_media(priv); | |
224 | ||
225 | if (media < 0) | |
226 | return -1; | |
227 | media &= ~mask; | |
228 | media |= mode; | |
229 | if (bsd_set_if_media(priv, media) < 0) | |
230 | return -1; | |
231 | return 0; | |
232 | } | |
233 | ||
234 | static int | |
235 | bsd_del_key(void *priv, const u8 *addr, int key_idx) | |
236 | { | |
237 | struct ieee80211req_del_key wk; | |
238 | ||
239 | os_memset(&wk, 0, sizeof(wk)); | |
240 | if (addr == NULL) { | |
241 | wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx); | |
242 | wk.idk_keyix = key_idx; | |
243 | } else { | |
244 | wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__, | |
245 | MAC2STR(addr)); | |
246 | os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN); | |
247 | wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */ | |
248 | } | |
249 | ||
250 | return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk)); | |
251 | } | |
252 | ||
253 | static int | |
254 | bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr) | |
255 | { | |
256 | struct ieee80211req_mlme mlme; | |
257 | ||
258 | os_memset(&mlme, 0, sizeof(mlme)); | |
259 | mlme.im_op = op; | |
260 | mlme.im_reason = reason; | |
261 | os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN); | |
262 | return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)); | |
263 | } | |
264 | ||
265 | static int | |
266 | bsd_ctrl_iface(void *priv, int enable) | |
267 | { | |
268 | struct bsd_driver_data *drv = priv; | |
269 | struct ifreq ifr; | |
270 | ||
271 | os_memset(&ifr, 0, sizeof(ifr)); | |
272 | os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); | |
273 | ||
274 | if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) { | |
275 | perror("ioctl[SIOCGIFFLAGS]"); | |
276 | return -1; | |
277 | } | |
278 | ||
279 | if (enable) | |
280 | ifr.ifr_flags |= IFF_UP; | |
281 | else | |
282 | ifr.ifr_flags &= ~IFF_UP; | |
283 | ||
284 | if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) { | |
285 | perror("ioctl[SIOCSIFFLAGS]"); | |
286 | return -1; | |
287 | } | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static int | |
293 | bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg, | |
294 | const unsigned char *addr, int key_idx, int set_tx, const u8 *seq, | |
295 | size_t seq_len, const u8 *key, size_t key_len) | |
296 | { | |
297 | struct ieee80211req_key wk; | |
298 | ||
299 | wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d " | |
300 | "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx, | |
301 | set_tx, seq_len, key_len); | |
302 | ||
303 | if (alg == WPA_ALG_NONE) { | |
304 | #ifndef HOSTAPD | |
305 | if (addr == NULL || | |
306 | os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", | |
307 | IEEE80211_ADDR_LEN) == 0) | |
308 | return bsd_del_key(priv, NULL, key_idx); | |
309 | else | |
310 | #endif /* HOSTAPD */ | |
311 | return bsd_del_key(priv, addr, key_idx); | |
312 | } | |
313 | ||
314 | os_memset(&wk, 0, sizeof(wk)); | |
315 | switch (alg) { | |
316 | case WPA_ALG_WEP: | |
317 | wk.ik_type = IEEE80211_CIPHER_WEP; | |
318 | break; | |
319 | case WPA_ALG_TKIP: | |
320 | wk.ik_type = IEEE80211_CIPHER_TKIP; | |
321 | break; | |
322 | case WPA_ALG_CCMP: | |
323 | wk.ik_type = IEEE80211_CIPHER_AES_CCM; | |
324 | break; | |
325 | default: | |
326 | wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg); | |
327 | return -1; | |
328 | } | |
329 | ||
330 | wk.ik_flags = IEEE80211_KEY_RECV; | |
331 | if (set_tx) | |
332 | wk.ik_flags |= IEEE80211_KEY_XMIT; | |
333 | ||
334 | if (addr == NULL) { | |
335 | os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN); | |
336 | wk.ik_keyix = key_idx; | |
337 | } else { | |
338 | os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN); | |
339 | /* | |
340 | * Deduce whether group/global or unicast key by checking | |
341 | * the address (yech). Note also that we can only mark global | |
342 | * keys default; doing this for a unicast key is an error. | |
343 | */ | |
344 | if (os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", | |
345 | IEEE80211_ADDR_LEN) == 0) { | |
346 | wk.ik_flags |= IEEE80211_KEY_GROUP; | |
347 | wk.ik_keyix = key_idx; | |
348 | } else { | |
349 | wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE : | |
350 | key_idx; | |
351 | } | |
352 | } | |
353 | if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx) | |
354 | wk.ik_flags |= IEEE80211_KEY_DEFAULT; | |
355 | wk.ik_keylen = key_len; | |
356 | os_memcpy(&wk.ik_keyrsc, seq, seq_len); | |
357 | os_memcpy(wk.ik_keydata, key, key_len); | |
358 | ||
359 | return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)); | |
360 | } | |
361 | ||
362 | static int | |
363 | bsd_configure_wpa(void *priv, struct wpa_bss_params *params) | |
364 | { | |
365 | static const char *ciphernames[] = | |
366 | { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" }; | |
367 | int v; | |
368 | ||
369 | switch (params->wpa_group) { | |
370 | case WPA_CIPHER_CCMP: | |
371 | v = IEEE80211_CIPHER_AES_CCM; | |
372 | break; | |
373 | case WPA_CIPHER_TKIP: | |
374 | v = IEEE80211_CIPHER_TKIP; | |
375 | break; | |
376 | case WPA_CIPHER_WEP104: | |
377 | v = IEEE80211_CIPHER_WEP; | |
378 | break; | |
379 | case WPA_CIPHER_WEP40: | |
380 | v = IEEE80211_CIPHER_WEP; | |
381 | break; | |
382 | case WPA_CIPHER_NONE: | |
383 | v = IEEE80211_CIPHER_NONE; | |
384 | break; | |
385 | default: | |
386 | printf("Unknown group key cipher %u\n", | |
387 | params->wpa_group); | |
388 | return -1; | |
389 | } | |
390 | wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)", | |
391 | __func__, ciphernames[v], v); | |
392 | if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) { | |
393 | printf("Unable to set group key cipher to %u (%s)\n", | |
394 | v, ciphernames[v]); | |
395 | return -1; | |
396 | } | |
397 | if (v == IEEE80211_CIPHER_WEP) { | |
398 | /* key length is done only for specific ciphers */ | |
399 | v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5); | |
400 | if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) { | |
401 | printf("Unable to set group key length to %u\n", v); | |
402 | return -1; | |
403 | } | |
404 | } | |
405 | ||
406 | v = 0; | |
407 | if (params->wpa_pairwise & WPA_CIPHER_CCMP) | |
408 | v |= 1<<IEEE80211_CIPHER_AES_CCM; | |
409 | if (params->wpa_pairwise & WPA_CIPHER_TKIP) | |
410 | v |= 1<<IEEE80211_CIPHER_TKIP; | |
411 | if (params->wpa_pairwise & WPA_CIPHER_NONE) | |
412 | v |= 1<<IEEE80211_CIPHER_NONE; | |
413 | wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v); | |
414 | if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) { | |
415 | printf("Unable to set pairwise key ciphers to 0x%x\n", v); | |
416 | return -1; | |
417 | } | |
418 | ||
419 | wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x", | |
420 | __func__, params->wpa_key_mgmt); | |
421 | if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS, | |
422 | params->wpa_key_mgmt)) { | |
423 | printf("Unable to set key management algorithms to 0x%x\n", | |
424 | params->wpa_key_mgmt); | |
425 | return -1; | |
426 | } | |
427 | ||
428 | v = 0; | |
429 | if (params->rsn_preauth) | |
430 | v |= BIT(0); | |
431 | wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x", | |
432 | __func__, params->rsn_preauth); | |
433 | if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) { | |
434 | printf("Unable to set RSN capabilities to 0x%x\n", v); | |
435 | return -1; | |
436 | } | |
437 | ||
438 | wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa); | |
439 | if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) { | |
440 | printf("Unable to set WPA to %u\n", params->wpa); | |
441 | return -1; | |
442 | } | |
443 | return 0; | |
444 | } | |
445 | ||
446 | static int | |
447 | bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params) | |
448 | { | |
449 | wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled); | |
450 | ||
451 | if (!params->enabled) { | |
452 | /* XXX restore state */ | |
453 | return set80211param(priv, IEEE80211_IOC_AUTHMODE, | |
454 | IEEE80211_AUTH_AUTO); | |
455 | } | |
456 | if (!params->wpa && !params->ieee802_1x) { | |
457 | wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled", | |
458 | __func__); | |
459 | return -1; | |
460 | } | |
461 | if (params->wpa && bsd_configure_wpa(priv, params) != 0) { | |
462 | wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state", | |
463 | __func__); | |
464 | return -1; | |
465 | } | |
466 | if (set80211param(priv, IEEE80211_IOC_AUTHMODE, | |
467 | (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) { | |
468 | wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X", | |
469 | __func__); | |
470 | return -1; | |
471 | } | |
472 | return bsd_ctrl_iface(priv, 1); | |
473 | } | |
474 | ||
475 | static int | |
476 | bsd_set_sta_authorized(void *priv, const u8 *addr, int total_flags, | |
477 | int flags_or, int flags_and) | |
478 | { | |
479 | int authorized = -1; | |
480 | ||
481 | /* For now, only support setting Authorized flag */ | |
482 | if (flags_or & WPA_STA_AUTHORIZED) | |
483 | authorized = 1; | |
484 | if (!(flags_and & WPA_STA_AUTHORIZED)) | |
485 | authorized = 0; | |
486 | ||
487 | if (authorized < 0) | |
488 | return 0; | |
489 | ||
490 | return bsd_send_mlme_param(priv, authorized ? | |
491 | IEEE80211_MLME_AUTHORIZE : | |
492 | IEEE80211_MLME_UNAUTHORIZE, 0, addr); | |
493 | } | |
494 | ||
495 | static void | |
496 | bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN]) | |
497 | { | |
498 | struct ieee80211req_wpaie ie; | |
499 | int ielen = 0; | |
500 | u8 *iebuf = NULL; | |
501 | ||
502 | /* | |
503 | * Fetch and validate any negotiated WPA/RSN parameters. | |
504 | */ | |
505 | memset(&ie, 0, sizeof(ie)); | |
506 | memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN); | |
507 | if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) { | |
508 | printf("Failed to get WPA/RSN information element.\n"); | |
509 | goto no_ie; | |
510 | } | |
511 | iebuf = ie.wpa_ie; | |
512 | ielen = ie.wpa_ie[1]; | |
513 | if (ielen == 0) | |
514 | iebuf = NULL; | |
515 | else | |
516 | ielen += 2; | |
517 | ||
518 | no_ie: | |
519 | drv_event_assoc(ctx, addr, iebuf, ielen); | |
520 | } | |
521 | ||
522 | static int | |
523 | bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len, | |
524 | int encrypt, const u8 *own_addr) | |
525 | { | |
526 | struct bsd_driver_data *drv = priv; | |
527 | ||
528 | wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len); | |
529 | ||
530 | return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data, | |
531 | data_len); | |
532 | } | |
533 | ||
534 | static int | |
535 | bsd_set_freq(void *priv, u16 channel) | |
536 | { | |
537 | struct bsd_driver_data *drv = priv; | |
538 | #ifdef SIOCS80211CHANNEL | |
539 | struct ieee80211chanreq creq; | |
540 | #endif /* SIOCS80211CHANNEL */ | |
541 | u32 mode; | |
542 | ||
543 | if (channel < 14) | |
544 | mode = IFM_IEEE80211_11G; | |
545 | else if (channel == 14) | |
546 | mode = IFM_IEEE80211_11B; | |
547 | else | |
548 | mode = IFM_IEEE80211_11A; | |
549 | if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) { | |
550 | wpa_printf(MSG_ERROR, "%s: failed to set modulation mode", | |
551 | __func__); | |
552 | return -1; | |
553 | } | |
554 | ||
555 | #ifdef SIOCS80211CHANNEL | |
556 | os_memset(&creq, 0, sizeof(creq)); | |
557 | os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name)); | |
558 | creq.i_channel = channel; | |
559 | return ioctl(drv->sock, SIOCS80211CHANNEL, &creq); | |
560 | #else /* SIOCS80211CHANNEL */ | |
561 | return set80211param(priv, IEEE80211_IOC_CHANNEL, channel); | |
562 | #endif /* SIOCS80211CHANNEL */ | |
563 | } | |
564 | ||
565 | ||
566 | #ifdef HOSTAPD | |
567 | ||
568 | /* | |
569 | * Avoid conflicts with hostapd definitions by undefining couple of defines | |
570 | * from net80211 header files. | |
571 | */ | |
572 | #undef RSN_VERSION | |
573 | #undef WPA_VERSION | |
574 | #undef WPA_OUI_TYPE | |
575 | ||
576 | static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, | |
577 | int reason_code); | |
578 | ||
579 | static const char * | |
580 | ether_sprintf(const u8 *addr) | |
581 | { | |
582 | static char buf[sizeof(MACSTR)]; | |
583 | ||
584 | if (addr != NULL) | |
585 | snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr)); | |
586 | else | |
587 | snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0); | |
588 | return buf; | |
589 | } | |
590 | ||
591 | static int | |
592 | bsd_set_privacy(const char *ifname, void *priv, int enabled) | |
593 | { | |
594 | wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); | |
595 | ||
596 | return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled); | |
597 | } | |
598 | ||
599 | static int | |
600 | bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx, | |
601 | u8 *seq) | |
602 | { | |
603 | struct ieee80211req_key wk; | |
604 | ||
605 | wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d", | |
606 | __func__, ether_sprintf(addr), idx); | |
607 | ||
608 | memset(&wk, 0, sizeof(wk)); | |
609 | if (addr == NULL) | |
610 | memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN); | |
611 | else | |
612 | memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN); | |
613 | wk.ik_keyix = idx; | |
614 | ||
615 | if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) { | |
616 | printf("Failed to get encryption.\n"); | |
617 | return -1; | |
618 | } | |
619 | ||
620 | #ifdef WORDS_BIGENDIAN | |
621 | { | |
622 | /* | |
623 | * wk.ik_keytsc is in host byte order (big endian), need to | |
624 | * swap it to match with the byte order used in WPA. | |
625 | */ | |
626 | int i; | |
627 | u8 tmp[WPA_KEY_RSC_LEN]; | |
628 | memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc)); | |
629 | for (i = 0; i < WPA_KEY_RSC_LEN; i++) { | |
630 | seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1]; | |
631 | } | |
632 | } | |
633 | #else /* WORDS_BIGENDIAN */ | |
634 | memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc)); | |
635 | #endif /* WORDS_BIGENDIAN */ | |
636 | return 0; | |
637 | } | |
638 | ||
639 | ||
640 | static int | |
641 | bsd_flush(void *priv) | |
642 | { | |
643 | u8 allsta[IEEE80211_ADDR_LEN]; | |
644 | ||
645 | memset(allsta, 0xff, IEEE80211_ADDR_LEN); | |
646 | return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE); | |
647 | } | |
648 | ||
649 | ||
650 | static int | |
651 | bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data, | |
652 | const u8 *addr) | |
653 | { | |
654 | struct ieee80211req_sta_stats stats; | |
655 | ||
656 | memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN); | |
657 | if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) | |
658 | > 0) { | |
659 | /* XXX? do packets counts include non-data frames? */ | |
660 | data->rx_packets = stats.is_stats.ns_rx_data; | |
661 | data->rx_bytes = stats.is_stats.ns_rx_bytes; | |
662 | data->tx_packets = stats.is_stats.ns_tx_data; | |
663 | data->tx_bytes = stats.is_stats.ns_tx_bytes; | |
664 | } | |
665 | return 0; | |
666 | } | |
667 | ||
668 | static int | |
669 | bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len) | |
670 | { | |
671 | /* | |
672 | * Do nothing; we setup parameters at startup that define the | |
673 | * contents of the beacon information element. | |
674 | */ | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static int | |
679 | bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code) | |
680 | { | |
681 | return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code, | |
682 | addr); | |
683 | } | |
684 | ||
685 | static int | |
686 | bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, | |
687 | int reason_code) | |
688 | { | |
689 | return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code, | |
690 | addr); | |
691 | } | |
692 | ||
693 | static void | |
694 | bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx) | |
695 | { | |
696 | struct bsd_driver_data *drv = ctx; | |
697 | char buf[2048]; | |
698 | struct if_announcemsghdr *ifan; | |
699 | struct rt_msghdr *rtm; | |
700 | struct ieee80211_michael_event *mic; | |
701 | struct ieee80211_join_event *join; | |
702 | struct ieee80211_leave_event *leave; | |
703 | int n; | |
704 | union wpa_event_data data; | |
705 | ||
706 | n = read(sock, buf, sizeof(buf)); | |
707 | if (n < 0) { | |
708 | if (errno != EINTR && errno != EAGAIN) | |
709 | perror("read(PF_ROUTE)"); | |
710 | return; | |
711 | } | |
712 | ||
713 | rtm = (struct rt_msghdr *) buf; | |
714 | if (rtm->rtm_version != RTM_VERSION) { | |
715 | wpa_printf(MSG_DEBUG, "Routing message version %d not " | |
716 | "understood\n", rtm->rtm_version); | |
717 | return; | |
718 | } | |
719 | ifan = (struct if_announcemsghdr *) rtm; | |
720 | switch (rtm->rtm_type) { | |
721 | case RTM_IEEE80211: | |
722 | switch (ifan->ifan_what) { | |
723 | case RTM_IEEE80211_ASSOC: | |
724 | case RTM_IEEE80211_REASSOC: | |
725 | case RTM_IEEE80211_DISASSOC: | |
726 | case RTM_IEEE80211_SCAN: | |
727 | break; | |
728 | case RTM_IEEE80211_LEAVE: | |
729 | leave = (struct ieee80211_leave_event *) &ifan[1]; | |
730 | drv_event_disassoc(drv->hapd, leave->iev_addr); | |
731 | break; | |
732 | case RTM_IEEE80211_JOIN: | |
733 | #ifdef RTM_IEEE80211_REJOIN | |
734 | case RTM_IEEE80211_REJOIN: | |
735 | #endif | |
736 | join = (struct ieee80211_join_event *) &ifan[1]; | |
737 | bsd_new_sta(drv, drv->hapd, join->iev_addr); | |
738 | break; | |
739 | case RTM_IEEE80211_REPLAY: | |
740 | /* ignore */ | |
741 | break; | |
742 | case RTM_IEEE80211_MICHAEL: | |
743 | mic = (struct ieee80211_michael_event *) &ifan[1]; | |
744 | wpa_printf(MSG_DEBUG, | |
745 | "Michael MIC failure wireless event: " | |
746 | "keyix=%u src_addr=" MACSTR, mic->iev_keyix, | |
747 | MAC2STR(mic->iev_src)); | |
748 | os_memset(&data, 0, sizeof(data)); | |
749 | data.michael_mic_failure.unicast = 1; | |
750 | data.michael_mic_failure.src = mic->iev_src; | |
751 | wpa_supplicant_event(drv->hapd, | |
752 | EVENT_MICHAEL_MIC_FAILURE, &data); | |
753 | break; | |
754 | } | |
755 | break; | |
756 | } | |
757 | } | |
758 | ||
759 | static void | |
760 | handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len) | |
761 | { | |
762 | struct bsd_driver_data *drv = ctx; | |
763 | drv_event_eapol_rx(drv->hapd, src_addr, buf, len); | |
764 | } | |
765 | ||
766 | static int | |
767 | hostapd_bsd_set_freq(void *priv, struct hostapd_freq_params *freq) | |
768 | { | |
769 | return bsd_set_freq(priv, freq->channel); | |
770 | } | |
771 | ||
772 | static void * | |
773 | bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params) | |
774 | { | |
775 | struct bsd_driver_data *drv; | |
776 | ||
777 | drv = os_zalloc(sizeof(struct bsd_driver_data)); | |
778 | if (drv == NULL) { | |
779 | printf("Could not allocate memory for bsd driver data\n"); | |
780 | goto bad; | |
781 | } | |
782 | ||
783 | drv->hapd = hapd; | |
784 | drv->sock = socket(PF_INET, SOCK_DGRAM, 0); | |
785 | if (drv->sock < 0) { | |
786 | perror("socket[PF_INET,SOCK_DGRAM]"); | |
787 | goto bad; | |
788 | } | |
789 | os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname)); | |
790 | ||
791 | drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL, | |
792 | handle_read, drv, 0); | |
793 | if (drv->sock_xmit == NULL) | |
794 | goto bad; | |
795 | if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr)) | |
796 | goto bad; | |
797 | ||
798 | /* mark down during setup */ | |
799 | if (bsd_ctrl_iface(drv, 0) < 0) | |
800 | goto bad; | |
801 | ||
802 | drv->route = socket(PF_ROUTE, SOCK_RAW, 0); | |
803 | if (drv->route < 0) { | |
804 | perror("socket(PF_ROUTE,SOCK_RAW)"); | |
805 | goto bad; | |
806 | } | |
807 | eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv, | |
808 | NULL); | |
809 | ||
810 | if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) { | |
811 | wpa_printf(MSG_ERROR, "%s: failed to set operation mode", | |
812 | __func__); | |
813 | goto bad; | |
814 | } | |
815 | ||
816 | return drv; | |
817 | bad: | |
818 | if (drv->sock_xmit != NULL) | |
819 | l2_packet_deinit(drv->sock_xmit); | |
820 | if (drv->sock >= 0) | |
821 | close(drv->sock); | |
822 | if (drv != NULL) | |
823 | os_free(drv); | |
824 | return NULL; | |
825 | } | |
826 | ||
827 | ||
828 | static void | |
829 | bsd_deinit(void *priv) | |
830 | { | |
831 | struct bsd_driver_data *drv = priv; | |
832 | ||
833 | if (drv->route >= 0) { | |
834 | eloop_unregister_read_sock(drv->route); | |
835 | close(drv->route); | |
836 | } | |
837 | bsd_ctrl_iface(drv, 0); | |
838 | if (drv->sock >= 0) | |
839 | close(drv->sock); | |
840 | if (drv->sock_xmit != NULL) | |
841 | l2_packet_deinit(drv->sock_xmit); | |
842 | os_free(drv); | |
843 | } | |
844 | ||
845 | #else /* HOSTAPD */ | |
846 | ||
847 | static int | |
848 | get80211param(struct bsd_driver_data *drv, int op) | |
849 | { | |
850 | struct ieee80211req ireq; | |
851 | ||
852 | os_memset(&ireq, 0, sizeof(ireq)); | |
853 | os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name)); | |
854 | ireq.i_type = op; | |
855 | ||
856 | if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) { | |
857 | fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n", | |
858 | op, strerror(errno)); | |
859 | return -1; | |
860 | } | |
861 | return ireq.i_val; | |
862 | } | |
863 | ||
864 | static int | |
865 | wpa_driver_bsd_get_bssid(void *priv, u8 *bssid) | |
866 | { | |
867 | struct bsd_driver_data *drv = priv; | |
868 | #ifdef SIOCG80211BSSID | |
869 | struct ieee80211_bssid bs; | |
870 | ||
871 | os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name)); | |
872 | if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0) | |
873 | return -1; | |
874 | os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid)); | |
875 | return 0; | |
876 | #else | |
877 | return get80211var(drv, IEEE80211_IOC_BSSID, | |
878 | bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0; | |
879 | #endif | |
880 | } | |
881 | ||
882 | static int | |
883 | wpa_driver_bsd_get_ssid(void *priv, u8 *ssid) | |
884 | { | |
885 | struct bsd_driver_data *drv = priv; | |
886 | return bsd_get_ssid(drv->ifname, drv, ssid, 0); | |
887 | } | |
888 | ||
889 | static int | |
890 | wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie, | |
891 | size_t wpa_ie_len) | |
892 | { | |
893 | #ifdef IEEE80211_IOC_APPIE | |
894 | return set80211var(drv, IEEE80211_IOC_APPIE, wpa_ie, wpa_ie_len); | |
895 | #else /* IEEE80211_IOC_APPIE */ | |
896 | return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len); | |
897 | #endif /* IEEE80211_IOC_APPIE */ | |
898 | } | |
899 | ||
900 | static int | |
901 | wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy) | |
902 | { | |
903 | int ret = 0; | |
904 | ||
905 | wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d", | |
906 | __FUNCTION__, wpa, privacy); | |
907 | ||
908 | if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0) | |
909 | ret = -1; | |
910 | if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0) | |
911 | ret = -1; | |
912 | if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0) | |
913 | ret = -1; | |
914 | ||
915 | return ret; | |
916 | } | |
917 | ||
918 | static int | |
919 | wpa_driver_bsd_set_wpa(void *priv, int enabled) | |
920 | { | |
921 | wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); | |
922 | ||
923 | return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled); | |
924 | } | |
925 | ||
926 | static int | |
927 | wpa_driver_bsd_set_countermeasures(void *priv, int enabled) | |
928 | { | |
929 | wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); | |
930 | return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled); | |
931 | } | |
932 | ||
933 | ||
934 | static int | |
935 | wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled) | |
936 | { | |
937 | wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); | |
938 | return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled); | |
939 | } | |
940 | ||
941 | static int | |
942 | wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code) | |
943 | { | |
944 | return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code, | |
945 | addr); | |
946 | } | |
947 | ||
948 | static int | |
949 | wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code) | |
950 | { | |
951 | return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code, | |
952 | addr); | |
953 | } | |
954 | ||
955 | static int | |
956 | wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg) | |
957 | { | |
958 | int authmode; | |
959 | ||
960 | if ((auth_alg & WPA_AUTH_ALG_OPEN) && | |
961 | (auth_alg & WPA_AUTH_ALG_SHARED)) | |
962 | authmode = IEEE80211_AUTH_AUTO; | |
963 | else if (auth_alg & WPA_AUTH_ALG_SHARED) | |
964 | authmode = IEEE80211_AUTH_SHARED; | |
965 | else | |
966 | authmode = IEEE80211_AUTH_OPEN; | |
967 | ||
968 | return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode); | |
969 | } | |
970 | ||
971 | static void | |
972 | handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len) | |
973 | { | |
974 | struct bsd_driver_data *drv = ctx; | |
975 | ||
976 | drv_event_eapol_rx(drv->ctx, src_addr, buf, len); | |
977 | } | |
978 | ||
979 | static int | |
980 | wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params) | |
981 | { | |
982 | struct bsd_driver_data *drv = priv; | |
983 | struct ieee80211req_mlme mlme; | |
984 | u32 mode; | |
985 | u16 channel; | |
986 | int privacy; | |
987 | int ret = 0; | |
988 | ||
989 | wpa_printf(MSG_DEBUG, | |
990 | "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u" | |
991 | , __func__ | |
992 | , (unsigned int) params->ssid_len, params->ssid | |
993 | , (unsigned int) params->wpa_ie_len | |
994 | , params->pairwise_suite | |
995 | , params->group_suite | |
996 | , params->key_mgmt_suite | |
997 | ); | |
998 | ||
999 | switch (params->mode) { | |
1000 | case IEEE80211_MODE_INFRA: | |
1001 | mode = 0 /* STA */; | |
1002 | break; | |
1003 | case IEEE80211_MODE_IBSS: | |
1004 | mode = IFM_IEEE80211_IBSS; | |
1005 | break; | |
1006 | case IEEE80211_MODE_AP: | |
1007 | mode = IFM_IEEE80211_HOSTAP; | |
1008 | break; | |
1009 | default: | |
1010 | wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__); | |
1011 | return -1; | |
1012 | } | |
1013 | if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) { | |
1014 | wpa_printf(MSG_ERROR, "%s: failed to set operation mode", | |
1015 | __func__); | |
1016 | return -1; | |
1017 | } | |
1018 | ||
1019 | if (params->mode == IEEE80211_MODE_AP) { | |
1020 | if (params->freq >= 2412 && params->freq <= 2472) | |
1021 | channel = (params->freq - 2407) / 5; | |
1022 | else if (params->freq == 2484) | |
1023 | channel = 14; | |
1024 | else if ((params->freq >= 5180 && params->freq <= 5240) || | |
1025 | (params->freq >= 5745 && params->freq <= 5825)) | |
1026 | channel = (params->freq - 5000) / 5; | |
1027 | else | |
1028 | channel = 0; | |
1029 | if (bsd_set_freq(drv, channel) < 0) | |
1030 | return -1; | |
1031 | ||
1032 | drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL, | |
1033 | handle_read, drv, 0); | |
1034 | if (drv->sock_xmit == NULL) | |
1035 | return -1; | |
1036 | drv->is_ap = 1; | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted) | |
1041 | < 0) | |
1042 | ret = -1; | |
1043 | if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0) | |
1044 | ret = -1; | |
1045 | /* XXX error handling is wrong but unclear what to do... */ | |
1046 | if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0) | |
1047 | return -1; | |
1048 | ||
1049 | privacy = !(params->pairwise_suite == CIPHER_NONE && | |
1050 | params->group_suite == CIPHER_NONE && | |
1051 | params->key_mgmt_suite == KEY_MGMT_NONE && | |
1052 | params->wpa_ie_len == 0); | |
1053 | wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy); | |
1054 | ||
1055 | if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0) | |
1056 | return -1; | |
1057 | ||
1058 | if (params->wpa_ie_len && | |
1059 | set80211param(drv, IEEE80211_IOC_WPA, | |
1060 | params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0) | |
1061 | return -1; | |
1062 | ||
1063 | os_memset(&mlme, 0, sizeof(mlme)); | |
1064 | mlme.im_op = IEEE80211_MLME_ASSOC; | |
1065 | if (params->ssid != NULL) | |
1066 | os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len); | |
1067 | mlme.im_ssid_len = params->ssid_len; | |
1068 | if (params->bssid != NULL) | |
1069 | os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN); | |
1070 | if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0) | |
1071 | return -1; | |
1072 | return ret; | |
1073 | } | |
1074 | ||
1075 | static int | |
1076 | wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params) | |
1077 | { | |
1078 | struct bsd_driver_data *drv = priv; | |
1079 | const u8 *ssid = params->ssids[0].ssid; | |
1080 | size_t ssid_len = params->ssids[0].ssid_len; | |
1081 | ||
1082 | if (set80211param(drv, IEEE80211_IOC_ROAMING, | |
1083 | IEEE80211_ROAMING_MANUAL) < 0) { | |
1084 | wpa_printf(MSG_ERROR, "%s: failed to set " | |
1085 | "wpa_supplicant-based roaming: %s", __func__, | |
1086 | strerror(errno)); | |
1087 | return -1; | |
1088 | } | |
1089 | ||
1090 | if (wpa_driver_bsd_set_wpa(drv, 1) < 0) { | |
1091 | wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__, | |
1092 | strerror(errno)); | |
1093 | return -1; | |
1094 | } | |
1095 | ||
1096 | /* NB: interface must be marked UP to do a scan */ | |
1097 | if (bsd_ctrl_iface(drv, 1) < 0) | |
1098 | return -1; | |
1099 | ||
1100 | /* set desired ssid before scan */ | |
1101 | if (bsd_set_ssid(drv->ifname, drv, ssid, ssid_len) < 0) | |
1102 | return -1; | |
1103 | ||
1104 | /* NB: net80211 delivers a scan complete event so no need to poll */ | |
1105 | return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0); | |
1106 | } | |
1107 | ||
1108 | static void | |
1109 | wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx) | |
1110 | { | |
1111 | struct bsd_driver_data *drv = sock_ctx; | |
1112 | char buf[2048]; | |
1113 | struct if_announcemsghdr *ifan; | |
1114 | struct if_msghdr *ifm; | |
1115 | struct rt_msghdr *rtm; | |
1116 | union wpa_event_data event; | |
1117 | struct ieee80211_michael_event *mic; | |
1118 | struct ieee80211_leave_event *leave; | |
1119 | struct ieee80211_join_event *join; | |
1120 | int n; | |
1121 | ||
1122 | n = read(sock, buf, sizeof(buf)); | |
1123 | if (n < 0) { | |
1124 | if (errno != EINTR && errno != EAGAIN) | |
1125 | perror("read(PF_ROUTE)"); | |
1126 | return; | |
1127 | } | |
1128 | ||
1129 | rtm = (struct rt_msghdr *) buf; | |
1130 | if (rtm->rtm_version != RTM_VERSION) { | |
1131 | wpa_printf(MSG_DEBUG, "Routing message version %d not " | |
1132 | "understood\n", rtm->rtm_version); | |
1133 | return; | |
1134 | } | |
1135 | os_memset(&event, 0, sizeof(event)); | |
1136 | switch (rtm->rtm_type) { | |
1137 | case RTM_IFANNOUNCE: | |
1138 | ifan = (struct if_announcemsghdr *) rtm; | |
1139 | if (ifan->ifan_index != drv->ifindex) | |
1140 | break; | |
1141 | strlcpy(event.interface_status.ifname, drv->ifname, | |
1142 | sizeof(event.interface_status.ifname)); | |
1143 | switch (ifan->ifan_what) { | |
1144 | case IFAN_DEPARTURE: | |
1145 | event.interface_status.ievent = EVENT_INTERFACE_REMOVED; | |
1146 | default: | |
1147 | return; | |
1148 | } | |
1149 | wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s", | |
1150 | event.interface_status.ifname, | |
1151 | ifan->ifan_what == IFAN_DEPARTURE ? | |
1152 | "removed" : "added"); | |
1153 | wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event); | |
1154 | break; | |
1155 | case RTM_IEEE80211: | |
1156 | ifan = (struct if_announcemsghdr *) rtm; | |
1157 | if (ifan->ifan_index != drv->ifindex) | |
1158 | break; | |
1159 | switch (ifan->ifan_what) { | |
1160 | case RTM_IEEE80211_ASSOC: | |
1161 | case RTM_IEEE80211_REASSOC: | |
1162 | if (drv->is_ap) | |
1163 | break; | |
1164 | wpa_supplicant_event(ctx, EVENT_ASSOC, NULL); | |
1165 | break; | |
1166 | case RTM_IEEE80211_DISASSOC: | |
1167 | if (drv->is_ap) | |
1168 | break; | |
1169 | wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL); | |
1170 | break; | |
1171 | case RTM_IEEE80211_SCAN: | |
1172 | if (drv->is_ap) | |
1173 | break; | |
1174 | wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL); | |
1175 | break; | |
1176 | case RTM_IEEE80211_LEAVE: | |
1177 | leave = (struct ieee80211_leave_event *) &ifan[1]; | |
1178 | drv_event_disassoc(ctx, leave->iev_addr); | |
1179 | break; | |
1180 | case RTM_IEEE80211_JOIN: | |
1181 | #ifdef RTM_IEEE80211_REJOIN | |
1182 | case RTM_IEEE80211_REJOIN: | |
1183 | #endif | |
1184 | join = (struct ieee80211_join_event *) &ifan[1]; | |
1185 | bsd_new_sta(drv, ctx, join->iev_addr); | |
1186 | break; | |
1187 | case RTM_IEEE80211_REPLAY: | |
1188 | /* ignore */ | |
1189 | break; | |
1190 | case RTM_IEEE80211_MICHAEL: | |
1191 | mic = (struct ieee80211_michael_event *) &ifan[1]; | |
1192 | wpa_printf(MSG_DEBUG, | |
1193 | "Michael MIC failure wireless event: " | |
1194 | "keyix=%u src_addr=" MACSTR, mic->iev_keyix, | |
1195 | MAC2STR(mic->iev_src)); | |
1196 | ||
1197 | os_memset(&event, 0, sizeof(event)); | |
1198 | event.michael_mic_failure.unicast = | |
1199 | !IEEE80211_IS_MULTICAST(mic->iev_dst); | |
1200 | wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, | |
1201 | &event); | |
1202 | break; | |
1203 | } | |
1204 | break; | |
1205 | case RTM_IFINFO: | |
1206 | ifm = (struct if_msghdr *) rtm; | |
1207 | if (ifm->ifm_index != drv->ifindex) | |
1208 | break; | |
1209 | if ((rtm->rtm_flags & RTF_UP) == 0) { | |
1210 | strlcpy(event.interface_status.ifname, drv->ifname, | |
1211 | sizeof(event.interface_status.ifname)); | |
1212 | event.interface_status.ievent = EVENT_INTERFACE_REMOVED; | |
1213 | wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN", | |
1214 | event.interface_status.ifname); | |
1215 | wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event); | |
1216 | } | |
1217 | break; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | static void | |
1222 | wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res, | |
1223 | struct ieee80211req_scan_result *sr) | |
1224 | { | |
1225 | struct wpa_scan_res *result, **tmp; | |
1226 | size_t extra_len; | |
1227 | u8 *pos; | |
1228 | ||
1229 | extra_len = 2 + sr->isr_ssid_len; | |
1230 | extra_len += 2 + sr->isr_nrates; | |
1231 | extra_len += 3; /* ERP IE */ | |
1232 | extra_len += sr->isr_ie_len; | |
1233 | ||
1234 | result = os_zalloc(sizeof(*result) + extra_len); | |
1235 | if (result == NULL) | |
1236 | return; | |
1237 | os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN); | |
1238 | result->freq = sr->isr_freq; | |
1239 | result->beacon_int = sr->isr_intval; | |
1240 | result->caps = sr->isr_capinfo; | |
1241 | result->qual = sr->isr_rssi; | |
1242 | result->noise = sr->isr_noise; | |
1243 | ||
1244 | pos = (u8 *)(result + 1); | |
1245 | ||
1246 | *pos++ = WLAN_EID_SSID; | |
1247 | *pos++ = sr->isr_ssid_len; | |
1248 | os_memcpy(pos, sr + 1, sr->isr_ssid_len); | |
1249 | pos += sr->isr_ssid_len; | |
1250 | ||
1251 | /* | |
1252 | * Deal all rates as supported rate. | |
1253 | * Because net80211 doesn't report extended supported rate or not. | |
1254 | */ | |
1255 | *pos++ = WLAN_EID_SUPP_RATES; | |
1256 | *pos++ = sr->isr_nrates; | |
1257 | os_memcpy(pos, sr->isr_rates, sr->isr_nrates); | |
1258 | pos += sr->isr_nrates; | |
1259 | ||
1260 | *pos++ = WLAN_EID_ERP_INFO; | |
1261 | *pos++ = 1; | |
1262 | *pos++ = sr->isr_erp; | |
1263 | ||
1264 | os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len); | |
1265 | pos += sr->isr_ie_len; | |
1266 | ||
1267 | result->ie_len = pos - (u8 *)(result + 1); | |
1268 | ||
1269 | tmp = os_realloc(res->res, | |
1270 | (res->num + 1) * sizeof(struct wpa_scan_res *)); | |
1271 | if (tmp == NULL) { | |
1272 | os_free(result); | |
1273 | return; | |
1274 | } | |
1275 | tmp[res->num++] = result; | |
1276 | res->res = tmp; | |
1277 | } | |
1278 | ||
1279 | struct wpa_scan_results * | |
1280 | wpa_driver_bsd_get_scan_results2(void *priv) | |
1281 | { | |
1282 | struct ieee80211req_scan_result *sr; | |
1283 | struct wpa_scan_results *res; | |
1284 | int len, rest; | |
1285 | uint8_t buf[24*1024], *pos; | |
1286 | ||
1287 | len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024); | |
1288 | if (len < 0) | |
1289 | return NULL; | |
1290 | ||
1291 | res = os_zalloc(sizeof(*res)); | |
1292 | if (res == NULL) | |
1293 | return NULL; | |
1294 | ||
1295 | pos = buf; | |
1296 | rest = len; | |
1297 | while (rest >= sizeof(struct ieee80211req_scan_result)) { | |
1298 | sr = (struct ieee80211req_scan_result *)pos; | |
1299 | wpa_driver_bsd_add_scan_entry(res, sr); | |
1300 | pos += sr->isr_len; | |
1301 | rest -= sr->isr_len; | |
1302 | } | |
1303 | ||
1304 | wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)", | |
1305 | len, (unsigned long)res->num); | |
1306 | ||
1307 | return res; | |
1308 | } | |
1309 | ||
1310 | static int wpa_driver_bsd_capa(struct bsd_driver_data *drv) | |
1311 | { | |
1312 | /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ | |
1313 | drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | | |
1314 | WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | | |
1315 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | | |
1316 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; | |
1317 | drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | | |
1318 | WPA_DRIVER_CAPA_ENC_WEP104 | | |
1319 | WPA_DRIVER_CAPA_ENC_TKIP | | |
1320 | WPA_DRIVER_CAPA_ENC_CCMP; | |
1321 | drv->capa.auth = WPA_DRIVER_AUTH_OPEN | | |
1322 | WPA_DRIVER_AUTH_SHARED | | |
1323 | WPA_DRIVER_AUTH_LEAP; | |
1324 | ||
1325 | //drv->capa.max_scan_ssids = info.max_scan_ssids; | |
1326 | drv->capa.flags |= WPA_DRIVER_FLAGS_AP; | |
1327 | ||
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static void * | |
1332 | wpa_driver_bsd_init(void *ctx, const char *ifname) | |
1333 | { | |
1334 | #define GETPARAM(drv, param, v) \ | |
1335 | (((v) = get80211param(drv, param)) != -1) | |
1336 | struct bsd_driver_data *drv; | |
1337 | ||
1338 | drv = os_zalloc(sizeof(*drv)); | |
1339 | if (drv == NULL) | |
1340 | return NULL; | |
1341 | /* | |
1342 | * NB: We require the interface name be mappable to an index. | |
1343 | * This implies we do not support having wpa_supplicant | |
1344 | * wait for an interface to appear. This seems ok; that | |
1345 | * doesn't belong here; it's really the job of devd. | |
1346 | */ | |
1347 | drv->ifindex = if_nametoindex(ifname); | |
1348 | if (drv->ifindex == 0) { | |
1349 | wpa_printf(MSG_DEBUG, "%s: interface %s does not exist", | |
1350 | __func__, ifname); | |
1351 | goto fail1; | |
1352 | } | |
1353 | drv->sock = socket(PF_INET, SOCK_DGRAM, 0); | |
1354 | if (drv->sock < 0) | |
1355 | goto fail1; | |
1356 | drv->route = socket(PF_ROUTE, SOCK_RAW, 0); | |
1357 | if (drv->route < 0) | |
1358 | goto fail; | |
1359 | eloop_register_read_sock(drv->route, | |
1360 | wpa_driver_bsd_event_receive, ctx, drv); | |
1361 | ||
1362 | drv->ctx = ctx; | |
1363 | os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); | |
1364 | ||
1365 | /* Down interface during setup. */ | |
1366 | if (bsd_ctrl_iface(drv, 0) < 0) | |
1367 | goto fail; | |
1368 | ||
1369 | if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) { | |
1370 | wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s", | |
1371 | __func__, strerror(errno)); | |
1372 | goto fail; | |
1373 | } | |
1374 | if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) { | |
1375 | wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s", | |
1376 | __func__, strerror(errno)); | |
1377 | goto fail; | |
1378 | } | |
1379 | if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) { | |
1380 | wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s", | |
1381 | __func__, strerror(errno)); | |
1382 | goto fail; | |
1383 | } | |
1384 | ||
1385 | if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) { | |
1386 | wpa_printf(MSG_ERROR, "%s: failed to set operation mode", | |
1387 | __func__); | |
1388 | goto fail; | |
1389 | } | |
1390 | ||
1391 | if (wpa_driver_bsd_capa(drv)) | |
1392 | goto fail; | |
1393 | ||
1394 | return drv; | |
1395 | fail: | |
1396 | close(drv->sock); | |
1397 | fail1: | |
1398 | os_free(drv); | |
1399 | return NULL; | |
1400 | #undef GETPARAM | |
1401 | } | |
1402 | ||
1403 | static void | |
1404 | wpa_driver_bsd_deinit(void *priv) | |
1405 | { | |
1406 | struct bsd_driver_data *drv = priv; | |
1407 | ||
1408 | wpa_driver_bsd_set_wpa(drv, 0); | |
1409 | eloop_unregister_read_sock(drv->route); | |
1410 | ||
1411 | /* NB: mark interface down */ | |
1412 | bsd_ctrl_iface(drv, 0); | |
1413 | ||
1414 | wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy); | |
1415 | if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0) | |
1416 | wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state", | |
1417 | __func__); | |
1418 | ||
1419 | if (drv->sock_xmit != NULL) | |
1420 | l2_packet_deinit(drv->sock_xmit); | |
1421 | (void) close(drv->route); /* ioctl socket */ | |
1422 | (void) close(drv->sock); /* event socket */ | |
1423 | os_free(drv); | |
1424 | } | |
1425 | ||
1426 | static int | |
1427 | wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa) | |
1428 | { | |
1429 | struct bsd_driver_data *drv = priv; | |
1430 | ||
1431 | os_memcpy(capa, &drv->capa, sizeof(*capa)); | |
1432 | return 0; | |
1433 | } | |
1434 | #endif /* HOSTAPD */ | |
1435 | ||
1436 | ||
1437 | const struct wpa_driver_ops wpa_driver_bsd_ops = { | |
1438 | .name = "bsd", | |
1439 | .desc = "BSD 802.11 support", | |
1440 | #ifdef HOSTAPD | |
1441 | .hapd_init = bsd_init, | |
1442 | .hapd_deinit = bsd_deinit, | |
1443 | .set_privacy = bsd_set_privacy, | |
1444 | .get_seqnum = bsd_get_seqnum, | |
1445 | .flush = bsd_flush, | |
1446 | .set_generic_elem = bsd_set_opt_ie, | |
1447 | .read_sta_data = bsd_read_sta_driver_data, | |
1448 | .sta_disassoc = bsd_sta_disassoc, | |
1449 | .sta_deauth = bsd_sta_deauth, | |
1450 | .set_freq = hostapd_bsd_set_freq, | |
1451 | #else /* HOSTAPD */ | |
1452 | .init = wpa_driver_bsd_init, | |
1453 | .deinit = wpa_driver_bsd_deinit, | |
1454 | .get_bssid = wpa_driver_bsd_get_bssid, | |
1455 | .get_ssid = wpa_driver_bsd_get_ssid, | |
1456 | .set_countermeasures = wpa_driver_bsd_set_countermeasures, | |
1457 | .scan2 = wpa_driver_bsd_scan, | |
1458 | .get_scan_results2 = wpa_driver_bsd_get_scan_results2, | |
1459 | .deauthenticate = wpa_driver_bsd_deauthenticate, | |
1460 | .disassociate = wpa_driver_bsd_disassociate, | |
1461 | .associate = wpa_driver_bsd_associate, | |
1462 | .get_capa = wpa_driver_bsd_get_capa, | |
1463 | #endif /* HOSTAPD */ | |
1464 | .set_key = bsd_set_key, | |
1465 | .set_ieee8021x = bsd_set_ieee8021x, | |
1466 | .hapd_set_ssid = bsd_set_ssid, | |
1467 | .hapd_get_ssid = bsd_get_ssid, | |
1468 | .hapd_send_eapol = bsd_send_eapol, | |
1469 | .sta_set_flags = bsd_set_sta_authorized, | |
1470 | }; |