2 * WPA Supplicant - Basic AP mode support routines
3 * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2009, Atheros Communications
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.
10 * Alternatively, this software may be distributed under the terms of BSD
13 * See README and COPYING for more details.
19 #include "ap/hostapd.h"
20 #include "ap/config.h"
22 #include "ap/ieee802_11.h"
23 #endif /* NEED_AP_MLME */
24 #include "ap/wps_hostapd.h"
25 #include "ap/ctrl_iface_ap.h"
26 #include "eap_common/eap_defs.h"
27 #include "eap_server/eap_methods.h"
28 #include "eap_common/eap_wsc_common.h"
30 #include "config_ssid.h"
32 #include "wpa_supplicant_i.h"
37 struct hapd_interfaces {
39 struct hostapd_iface **iface;
43 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
44 int (*cb)(struct hostapd_iface *iface,
45 void *ctx), void *ctx)
52 int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
58 void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
63 struct ap_driver_data {
64 struct hostapd_data *hapd;
68 static void * ap_driver_init(struct hostapd_data *hapd,
69 struct wpa_init_params *params)
71 struct ap_driver_data *drv;
72 struct wpa_supplicant *wpa_s = hapd->iface->owner;
74 drv = os_zalloc(sizeof(struct ap_driver_data));
76 wpa_printf(MSG_ERROR, "Could not allocate memory for AP "
81 os_memcpy(hapd->own_addr, wpa_s->own_addr, ETH_ALEN);
87 static void ap_driver_deinit(void *priv)
89 struct ap_driver_data *drv = priv;
95 static int ap_driver_send_ether(void *priv, const u8 *dst, const u8 *src,
96 u16 proto, const u8 *data, size_t data_len)
98 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
103 static int ap_driver_set_key(const char *iface, void *priv, wpa_alg alg,
104 const u8 *addr, int key_idx, int set_tx,
105 const u8 *seq, size_t seq_len, const u8 *key,
108 struct ap_driver_data *drv = priv;
109 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
110 return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
115 static int ap_driver_get_seqnum(const char *iface, void *priv, const u8 *addr,
118 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
123 static int ap_driver_flush(void *priv)
125 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
130 static int ap_driver_read_sta_data(void *priv,
131 struct hostap_sta_driver_data *data,
134 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
139 static int ap_driver_sta_set_flags(void *priv, const u8 *addr, int total_flags,
140 int flags_or, int flags_and)
142 struct ap_driver_data *drv = priv;
143 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
144 return wpa_drv_sta_set_flags(wpa_s, addr, total_flags, flags_or,
149 static int ap_driver_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
152 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
157 static int ap_driver_sta_disassoc(void *priv, const u8 *own_addr,
158 const u8 *addr, int reason)
160 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
165 static int ap_driver_sta_remove(void *priv, const u8 *addr)
167 struct ap_driver_data *drv = priv;
168 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
169 return wpa_drv_sta_remove(wpa_s, addr);
173 static int ap_driver_send_mlme(void *priv, const u8 *data, size_t len)
175 struct ap_driver_data *drv = priv;
176 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
177 return wpa_drv_send_mlme(wpa_s, data, len);
181 static int ap_driver_sta_add(const char *ifname, void *priv,
182 struct hostapd_sta_add_params *params)
184 struct ap_driver_data *drv = priv;
185 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
186 return wpa_drv_sta_add(wpa_s, params);
190 static int ap_driver_get_inact_sec(void *priv, const u8 *addr)
192 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
197 static int ap_driver_set_freq(void *priv, struct hostapd_freq_params *freq)
199 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
204 static int ap_driver_set_beacon(const char *iface, void *priv,
205 const u8 *head, size_t head_len,
206 const u8 *tail, size_t tail_len,
207 int dtim_period, int beacon_int)
209 struct ap_driver_data *drv = priv;
210 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
211 return wpa_drv_set_beacon(wpa_s, head, head_len, tail, tail_len,
212 dtim_period, beacon_int);
216 static int ap_driver_set_cts_protect(void *priv, int value)
218 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
223 static int ap_driver_set_preamble(void *priv, int value)
225 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
230 static int ap_driver_set_short_slot_time(void *priv, int value)
232 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
237 static int ap_driver_set_tx_queue_params(void *priv, int queue, int aifs,
238 int cw_min, int cw_max,
241 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
246 static struct hostapd_hw_modes *ap_driver_get_hw_feature_data(void *priv,
250 struct ap_driver_data *drv = priv;
251 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
252 return wpa_drv_get_hw_feature_data(wpa_s, num_modes, flags);
256 static int ap_driver_hapd_send_eapol(void *priv, const u8 *addr,
257 const u8 *data, size_t data_len,
258 int encrypt, const u8 *own_addr)
260 struct ap_driver_data *drv = priv;
261 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
262 return wpa_drv_hapd_send_eapol(wpa_s, addr, data, data_len, encrypt,
267 struct wpa_driver_ops ap_driver_ops =
269 .name = "wpa_supplicant",
270 .hapd_init = ap_driver_init,
271 .hapd_deinit = ap_driver_deinit,
272 .send_ether = ap_driver_send_ether,
273 .set_key = ap_driver_set_key,
274 .get_seqnum = ap_driver_get_seqnum,
275 .flush = ap_driver_flush,
276 .read_sta_data = ap_driver_read_sta_data,
277 .sta_set_flags = ap_driver_sta_set_flags,
278 .sta_deauth = ap_driver_sta_deauth,
279 .sta_disassoc = ap_driver_sta_disassoc,
280 .sta_remove = ap_driver_sta_remove,
281 .send_mlme = ap_driver_send_mlme,
282 .sta_add = ap_driver_sta_add,
283 .get_inact_sec = ap_driver_get_inact_sec,
284 .set_freq = ap_driver_set_freq,
285 .set_beacon = ap_driver_set_beacon,
286 .set_cts_protect = ap_driver_set_cts_protect,
287 .set_preamble = ap_driver_set_preamble,
288 .set_short_slot_time = ap_driver_set_short_slot_time,
289 .set_tx_queue_params = ap_driver_set_tx_queue_params,
290 .get_hw_feature_data = ap_driver_get_hw_feature_data,
291 .hapd_send_eapol = ap_driver_hapd_send_eapol,
295 extern struct wpa_driver_ops *wpa_drivers[];
297 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
298 struct wpa_ssid *ssid,
299 struct hostapd_config *conf)
301 struct hostapd_bss_config *bss = &conf->bss[0];
304 for (j = 0; wpa_drivers[j]; j++) {
305 if (os_strcmp("wpa_supplicant", wpa_drivers[j]->name) == 0) {
306 conf->driver = wpa_drivers[j];
310 if (conf->driver == NULL) {
311 wpa_printf(MSG_ERROR, "No AP driver ops found");
315 os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
317 if (ssid->frequency == 0) {
318 /* default channel 11 */
319 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
321 } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
322 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
323 conf->channel = (ssid->frequency - 2407) / 5;
324 } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
325 (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
326 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
327 conf->channel = (ssid->frequency - 5000) / 5;
329 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
334 /* TODO: enable HT if driver supports it;
335 * drop to 11b if driver does not support 11g */
337 if (ssid->ssid_len == 0) {
338 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
341 os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
342 bss->ssid.ssid[ssid->ssid_len] = '\0';
343 bss->ssid.ssid_len = ssid->ssid_len;
344 bss->ssid.ssid_set = 1;
346 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
347 bss->wpa = ssid->proto;
348 bss->wpa_key_mgmt = ssid->key_mgmt;
349 bss->wpa_pairwise = ssid->pairwise_cipher;
350 if (ssid->passphrase) {
351 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
352 } else if (ssid->psk_set) {
353 os_free(bss->ssid.wpa_psk);
354 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
355 if (bss->ssid.wpa_psk == NULL)
357 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
358 bss->ssid.wpa_psk->group = 1;
361 /* Select group cipher based on the enabled pairwise cipher suites */
364 pairwise |= bss->wpa_pairwise;
366 if (bss->rsn_pairwise == 0)
367 bss->rsn_pairwise = bss->wpa_pairwise;
368 pairwise |= bss->rsn_pairwise;
370 if (pairwise & WPA_CIPHER_TKIP)
371 bss->wpa_group = WPA_CIPHER_TKIP;
373 bss->wpa_group = WPA_CIPHER_CCMP;
375 if (bss->wpa && bss->ieee802_1x)
376 bss->ssid.security_policy = SECURITY_WPA;
378 bss->ssid.security_policy = SECURITY_WPA_PSK;
379 else if (bss->ieee802_1x) {
380 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
381 bss->ssid.wep.default_len = bss->default_wep_key_len;
382 } else if (bss->ssid.wep.keys_set)
383 bss->ssid.security_policy = SECURITY_STATIC_WEP;
385 bss->ssid.security_policy = SECURITY_PLAINTEXT;
389 * Enable WPS by default, but require user interaction to actually use
390 * it. Only the internal Registrar is supported.
394 bss->ap_setup_locked = 1;
395 if (wpa_s->conf->config_methods)
396 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
397 if (wpa_s->conf->device_type)
398 bss->device_type = os_strdup(wpa_s->conf->device_type);
399 #endif /* CONFIG_WPS */
405 static int hostapd_driver_init(struct hostapd_iface *iface)
407 struct wpa_init_params params;
408 struct hostapd_data *hapd = iface->bss[0];
410 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
411 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
415 os_memset(¶ms, 0, sizeof(params));
416 params.ifname = hapd->conf->iface;
417 params.ssid = (const u8 *) hapd->conf->ssid.ssid;
418 params.ssid_len = hapd->conf->ssid.ssid_len;
420 params.num_bridge = hapd->iface->num_bss;
421 params.bridge = os_zalloc(hapd->iface->num_bss * sizeof(char *));
422 if (params.bridge == NULL)
424 params.own_addr = hapd->own_addr;
426 hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms);
427 os_free(params.bridge);
428 if (hapd->drv_priv == NULL) {
429 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
439 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
440 struct wpa_ssid *ssid)
442 struct wpa_driver_associate_params params;
443 struct hostapd_iface *hapd_iface;
444 struct hostapd_config *conf;
447 if (ssid->ssid == NULL || ssid->ssid_len == 0) {
448 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
452 wpa_supplicant_ap_deinit(wpa_s);
454 wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
455 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
457 os_memset(¶ms, 0, sizeof(params));
458 params.ssid = ssid->ssid;
459 params.ssid_len = ssid->ssid_len;
460 params.mode = ssid->mode;
461 params.freq = ssid->frequency;
463 if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
464 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
468 wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
469 if (hapd_iface == NULL)
471 hapd_iface->owner = wpa_s;
473 wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
475 wpa_supplicant_ap_deinit(wpa_s);
479 if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
480 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
481 wpa_supplicant_ap_deinit(wpa_s);
485 hapd_iface->num_bss = conf->num_bss;
486 hapd_iface->bss = os_zalloc(conf->num_bss *
487 sizeof(struct hostapd_data *));
488 if (hapd_iface->bss == NULL) {
489 wpa_supplicant_ap_deinit(wpa_s);
493 for (i = 0; i < conf->num_bss; i++) {
495 hostapd_alloc_bss_data(hapd_iface, conf,
497 if (hapd_iface->bss[i] == NULL) {
498 wpa_supplicant_ap_deinit(wpa_s);
502 hapd_iface->bss[i]->msg_ctx = wpa_s;
505 if (hostapd_driver_init(wpa_s->ap_iface) ||
506 hostapd_setup_interface(wpa_s->ap_iface)) {
507 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
508 wpa_supplicant_ap_deinit(wpa_s);
512 wpa_s->current_ssid = ssid;
513 os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
514 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
520 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
522 const struct wpa_driver_ops *driver;
525 if (wpa_s->ap_iface == NULL)
528 driver = wpa_s->ap_iface->bss[0]->driver;
529 drv_priv = wpa_s->ap_iface->bss[0]->drv_priv;
530 hostapd_interface_deinit(wpa_s->ap_iface);
531 wpa_s->ap_iface = NULL;
532 if (driver && driver->hapd_deinit)
533 driver->hapd_deinit(drv_priv);
537 void ap_tx_status(void *ctx, const u8 *addr,
538 const u8 *buf, size_t len, int ack)
541 struct wpa_supplicant *wpa_s = ctx;
542 hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
543 #endif /* NEED_AP_MLME */
547 void ap_rx_from_unknown_sta(void *ctx, const struct ieee80211_hdr *hdr,
551 struct wpa_supplicant *wpa_s = ctx;
552 u16 fc = le_to_host16(hdr->frame_control);
553 ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
554 (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
555 (WLAN_FC_TODS | WLAN_FC_FROMDS));
556 #endif /* NEED_AP_MLME */
560 void ap_mgmt_rx(void *ctx, const u8 *buf, size_t len,
561 struct hostapd_frame_info *fi)
564 struct wpa_supplicant *wpa_s = ctx;
565 ieee802_11_mgmt(wpa_s->ap_iface->bss[0], buf, len, fi);
566 #endif /* NEED_AP_MLME */
570 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
573 struct wpa_supplicant *wpa_s = ctx;
574 ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
575 #endif /* NEED_AP_MLME */
579 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
580 const u8 *src_addr, const u8 *buf, size_t len)
582 hostapd_eapol_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
588 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
590 return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]);
594 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
595 const char *pin, char *buf, size_t buflen)
597 int ret, ret_len = 0;
600 unsigned int rpin = wps_generate_pin();
601 ret_len = os_snprintf(buf, buflen, "%d", rpin);
605 ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], "any", pin, 0);
611 #endif /* CONFIG_WPS */
614 #ifdef CONFIG_CTRL_IFACE
616 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
617 char *buf, size_t buflen)
619 if (wpa_s->ap_iface == NULL)
621 return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
626 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
627 char *buf, size_t buflen)
629 if (wpa_s->ap_iface == NULL)
631 return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
636 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
637 char *buf, size_t buflen)
639 if (wpa_s->ap_iface == NULL)
641 return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
646 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
647 size_t buflen, int verbose)
649 char *pos = buf, *end = buf + buflen;
651 struct hostapd_bss_config *conf;
653 if (wpa_s->ap_iface == NULL)
656 conf = wpa_s->ap_iface->bss[0]->conf;
660 ret = os_snprintf(pos, end - pos,
661 "pairwise_cipher=%s\n"
664 wpa_cipher_txt(conf->rsn_pairwise),
665 wpa_cipher_txt(conf->wpa_group),
666 wpa_key_mgmt_txt(conf->wpa_key_mgmt,
668 if (ret < 0 || ret >= end - pos)
674 #endif /* CONFIG_CTRL_IFACE */