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 "../hostapd/hostapd.h"
20 #include "../hostapd/config.h"
22 #include "../hostapd/ieee802_11.h"
23 #endif /* NEED_MLME */
24 #include "../hostapd/wps_hostapd.h"
25 #include "eap_common/eap_defs.h"
26 #include "eap_server/eap_methods.h"
27 #include "eap_common/eap_wsc_common.h"
29 #include "config_ssid.h"
30 #include "wpa_supplicant_i.h"
35 int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
36 void *ctx), void *ctx)
43 int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
49 void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
54 struct ap_driver_data {
55 struct hostapd_data *hapd;
59 static void * ap_driver_init(struct hostapd_data *hapd,
60 struct wpa_init_params *params)
62 struct ap_driver_data *drv;
63 struct wpa_supplicant *wpa_s = hapd->iface->owner;
65 drv = os_zalloc(sizeof(struct ap_driver_data));
67 wpa_printf(MSG_ERROR, "Could not allocate memory for AP "
72 os_memcpy(hapd->own_addr, wpa_s->own_addr, ETH_ALEN);
78 static void ap_driver_deinit(void *priv)
80 struct ap_driver_data *drv = priv;
86 static int ap_driver_send_ether(void *priv, const u8 *dst, const u8 *src,
87 u16 proto, const u8 *data, size_t data_len)
89 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
94 static int ap_driver_set_key(const char *iface, void *priv, wpa_alg alg,
95 const u8 *addr, int key_idx, int set_tx,
96 const u8 *seq, size_t seq_len, const u8 *key,
99 struct ap_driver_data *drv = priv;
100 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
101 return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
106 static int ap_driver_get_seqnum(const char *iface, void *priv, const u8 *addr,
109 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
114 static int ap_driver_flush(void *priv)
116 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
121 static int ap_driver_read_sta_data(void *priv,
122 struct hostap_sta_driver_data *data,
125 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
130 static int ap_driver_sta_set_flags(void *priv, const u8 *addr, int total_flags,
131 int flags_or, int flags_and)
133 struct ap_driver_data *drv = priv;
134 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
135 return wpa_drv_sta_set_flags(wpa_s, addr, total_flags, flags_or,
140 static int ap_driver_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
143 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
148 static int ap_driver_sta_disassoc(void *priv, const u8 *own_addr,
149 const u8 *addr, int reason)
151 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
156 static int ap_driver_sta_remove(void *priv, const u8 *addr)
158 struct ap_driver_data *drv = priv;
159 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
160 return wpa_drv_sta_remove(wpa_s, addr);
164 static int ap_driver_send_mlme(void *priv, const u8 *data, size_t len)
166 struct ap_driver_data *drv = priv;
167 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
168 return wpa_drv_send_mlme(wpa_s, data, len);
172 static int ap_driver_sta_add(const char *ifname, void *priv,
173 struct hostapd_sta_add_params *params)
175 struct ap_driver_data *drv = priv;
176 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
177 return wpa_drv_sta_add(wpa_s, params);
181 static int ap_driver_get_inact_sec(void *priv, const u8 *addr)
183 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
188 static int ap_driver_set_freq(void *priv, struct hostapd_freq_params *freq)
190 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
195 static int ap_driver_set_beacon(const char *iface, void *priv,
196 const u8 *head, size_t head_len,
197 const u8 *tail, size_t tail_len,
200 struct ap_driver_data *drv = priv;
201 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
202 return wpa_drv_set_beacon(wpa_s, head, head_len, tail, tail_len,
207 static int ap_driver_set_beacon_int(void *priv, int value)
209 struct ap_driver_data *drv = priv;
210 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
211 return wpa_drv_set_beacon_int(wpa_s, value);
215 static int ap_driver_set_cts_protect(void *priv, int value)
217 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
222 static int ap_driver_set_preamble(void *priv, int value)
224 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
229 static int ap_driver_set_short_slot_time(void *priv, int value)
231 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
236 static int ap_driver_set_tx_queue_params(void *priv, int queue, int aifs,
237 int cw_min, int cw_max,
240 wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
245 static struct hostapd_hw_modes *ap_driver_get_hw_feature_data(void *priv,
249 struct ap_driver_data *drv = priv;
250 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
251 return wpa_drv_get_hw_feature_data(wpa_s, num_modes, flags);
255 static int ap_driver_hapd_send_eapol(void *priv, const u8 *addr,
256 const u8 *data, size_t data_len,
257 int encrypt, const u8 *own_addr)
259 struct ap_driver_data *drv = priv;
260 struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
261 return wpa_drv_hapd_send_eapol(wpa_s, addr, data, data_len, encrypt,
266 struct wpa_driver_ops ap_driver_ops =
268 .name = "wpa_supplicant",
269 .hapd_init = ap_driver_init,
270 .hapd_deinit = ap_driver_deinit,
271 .send_ether = ap_driver_send_ether,
272 .hapd_set_key = ap_driver_set_key,
273 .get_seqnum = ap_driver_get_seqnum,
274 .flush = ap_driver_flush,
275 .read_sta_data = ap_driver_read_sta_data,
276 .sta_set_flags = ap_driver_sta_set_flags,
277 .sta_deauth = ap_driver_sta_deauth,
278 .sta_disassoc = ap_driver_sta_disassoc,
279 .sta_remove = ap_driver_sta_remove,
280 .send_mlme = ap_driver_send_mlme,
281 .sta_add = ap_driver_sta_add,
282 .get_inact_sec = ap_driver_get_inact_sec,
283 .set_freq = ap_driver_set_freq,
284 .hapd_set_beacon = ap_driver_set_beacon,
285 .set_beacon_int = ap_driver_set_beacon_int,
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 bss->config_methods = os_strdup("display push_button");
396 #endif /* CONFIG_WPS */
402 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
403 struct wpa_ssid *ssid)
405 struct wpa_driver_associate_params params;
406 struct hostapd_iface *hapd_iface;
407 struct hostapd_config *conf;
410 if (ssid->ssid == NULL || ssid->ssid_len == 0) {
411 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
415 wpa_supplicant_ap_deinit(wpa_s);
417 wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
418 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
420 os_memset(¶ms, 0, sizeof(params));
421 params.ssid = ssid->ssid;
422 params.ssid_len = ssid->ssid_len;
423 params.mode = ssid->mode;
424 params.freq = ssid->frequency;
426 if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
427 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
431 wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
432 if (hapd_iface == NULL)
434 hapd_iface->owner = wpa_s;
436 wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
438 wpa_supplicant_ap_deinit(wpa_s);
442 if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
443 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
444 wpa_supplicant_ap_deinit(wpa_s);
448 hapd_iface->num_bss = conf->num_bss;
449 hapd_iface->bss = os_zalloc(conf->num_bss *
450 sizeof(struct hostapd_data *));
451 if (hapd_iface->bss == NULL) {
452 wpa_supplicant_ap_deinit(wpa_s);
456 for (i = 0; i < conf->num_bss; i++) {
458 hostapd_alloc_bss_data(hapd_iface, conf,
460 if (hapd_iface->bss[i] == NULL) {
461 wpa_supplicant_ap_deinit(wpa_s);
466 if (hostapd_setup_interface(wpa_s->ap_iface)) {
467 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
468 wpa_supplicant_ap_deinit(wpa_s);
476 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
478 if (wpa_s->ap_iface == NULL)
481 hostapd_interface_deinit(wpa_s->ap_iface);
482 wpa_s->ap_iface = NULL;
486 void ap_tx_status(void *ctx, const u8 *addr,
487 const u8 *buf, size_t len, int ack)
489 struct wpa_supplicant *wpa_s = ctx;
490 hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
494 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr)
496 struct wpa_supplicant *wpa_s = ctx;
497 ap_rx_from_unknown_sta(wpa_s->ap_iface->bss[0], addr);
502 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
503 struct hostapd_frame_info *fi)
505 struct wpa_supplicant *wpa_s = ctx;
506 ieee802_11_mgmt(wpa_s->ap_iface->bss[0], buf, len, stype, fi);
510 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok)
512 struct wpa_supplicant *wpa_s = ctx;
513 ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
515 #endif /* NEED_MLME */
518 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
519 const u8 *src_addr, const u8 *buf, size_t len)
521 hostapd_eapol_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
527 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
529 return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]);
533 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
534 const char *pin, char *buf, size_t buflen)
536 int ret, ret_len = 0;
539 unsigned int rpin = wps_generate_pin();
540 ret_len = os_snprintf(buf, buflen, "%d", rpin);
544 ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], "any", pin);
550 #endif /* CONFIG_WPS */