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.
16 #include "utils/includes.h"
18 #include "utils/common.h"
19 #include "common/ieee802_11_defs.h"
20 #include "ap/hostapd.h"
21 #include "ap/ap_config.h"
23 #include "ap/ieee802_11.h"
24 #endif /* NEED_AP_MLME */
25 #include "ap/beacon.h"
26 #include "ap/ieee802_1x.h"
27 #include "ap/wps_hostapd.h"
28 #include "ap/ctrl_iface_ap.h"
29 #include "eap_common/eap_defs.h"
30 #include "eap_server/eap_methods.h"
31 #include "eap_common/eap_wsc_common.h"
33 #include "common/ieee802_11_defs.h"
34 #include "config_ssid.h"
36 #include "wpa_supplicant_i.h"
38 #include "p2p_supplicant.h"
42 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
43 struct wpa_ssid *ssid,
44 struct hostapd_config *conf)
46 struct hostapd_bss_config *bss = &conf->bss[0];
49 conf->driver = wpa_s->driver;
51 os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
53 if (ssid->frequency == 0) {
54 /* default channel 11 */
55 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
57 } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
58 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
59 conf->channel = (ssid->frequency - 2407) / 5;
60 } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
61 (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
62 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
63 conf->channel = (ssid->frequency - 5000) / 5;
65 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
70 /* TODO: enable HT if driver supports it;
71 * drop to 11b if driver does not support 11g */
74 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
75 /* Remove 802.11b rates from supported and basic rate sets */
76 int *list = os_malloc(4 * sizeof(int));
83 conf->basic_rates = list;
85 list = os_malloc(9 * sizeof(int));
97 conf->supported_rates = list;
99 #endif /* CONFIG_P2P */
101 if (ssid->ssid_len == 0) {
102 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
105 os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
106 bss->ssid.ssid[ssid->ssid_len] = '\0';
107 bss->ssid.ssid_len = ssid->ssid_len;
108 bss->ssid.ssid_set = 1;
110 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
111 bss->wpa = ssid->proto;
112 bss->wpa_key_mgmt = ssid->key_mgmt;
113 bss->wpa_pairwise = ssid->pairwise_cipher;
114 if (ssid->passphrase) {
115 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
116 } else if (ssid->psk_set) {
117 os_free(bss->ssid.wpa_psk);
118 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
119 if (bss->ssid.wpa_psk == NULL)
121 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
122 bss->ssid.wpa_psk->group = 1;
125 /* Select group cipher based on the enabled pairwise cipher suites */
128 pairwise |= bss->wpa_pairwise;
130 if (bss->rsn_pairwise == 0)
131 bss->rsn_pairwise = bss->wpa_pairwise;
132 pairwise |= bss->rsn_pairwise;
134 if (pairwise & WPA_CIPHER_TKIP)
135 bss->wpa_group = WPA_CIPHER_TKIP;
137 bss->wpa_group = WPA_CIPHER_CCMP;
139 if (bss->wpa && bss->ieee802_1x)
140 bss->ssid.security_policy = SECURITY_WPA;
142 bss->ssid.security_policy = SECURITY_WPA_PSK;
143 else if (bss->ieee802_1x) {
144 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
145 bss->ssid.wep.default_len = bss->default_wep_key_len;
146 } else if (bss->ssid.wep.keys_set)
147 bss->ssid.security_policy = SECURITY_STATIC_WEP;
149 bss->ssid.security_policy = SECURITY_PLAINTEXT;
153 * Enable WPS by default, but require user interaction to actually use
154 * it. Only the internal Registrar is supported.
158 bss->ap_setup_locked = 1;
159 if (wpa_s->conf->config_methods)
160 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
161 if (wpa_s->conf->device_type)
162 bss->device_type = os_strdup(wpa_s->conf->device_type);
163 #endif /* CONFIG_WPS */
166 if (wpa_s->conf->device_name) {
167 bss->device_name = os_strdup(wpa_s->conf->device_name);
168 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
170 #endif /* CONFIG_P2P */
176 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
179 struct wpa_supplicant *wpa_s = ctx;
180 const struct ieee80211_mgmt *mgmt;
183 mgmt = (const struct ieee80211_mgmt *) buf;
184 hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
187 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
188 mgmt->u.action.category,
189 &mgmt->u.action.u.vs_public_action.action,
190 len - hdr_len, freq);
191 #endif /* CONFIG_P2P */
195 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
198 struct wpa_supplicant *wpa_s = ctx;
199 const struct ieee80211_mgmt *mgmt;
202 mgmt = (const struct ieee80211_mgmt *) buf;
203 hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
206 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
207 mgmt->u.action.category,
208 &mgmt->u.action.u.vs_public_action.action,
209 len - hdr_len, freq);
210 #endif /* CONFIG_P2P */
215 static int ap_probe_req_rx(void *ctx, const u8 *addr, const u8 *ie,
219 struct wpa_supplicant *wpa_s = ctx;
220 return wpas_p2p_probe_req_rx(wpa_s, addr, ie, ie_len);
221 #else /* CONFIG_P2P */
223 #endif /* CONFIG_P2P */
227 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
231 struct wpa_supplicant *wpa_s = ctx;
232 wpas_p2p_wps_success(wpa_s, mac_addr, 1);
233 #endif /* CONFIG_P2P */
237 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
238 struct wpa_ssid *ssid)
240 struct wpa_driver_associate_params params;
241 struct hostapd_iface *hapd_iface;
242 struct hostapd_config *conf;
245 if (ssid->ssid == NULL || ssid->ssid_len == 0) {
246 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
250 wpa_supplicant_ap_deinit(wpa_s);
252 wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
253 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
255 os_memset(¶ms, 0, sizeof(params));
256 params.ssid = ssid->ssid;
257 params.ssid_len = ssid->ssid_len;
258 switch (ssid->mode) {
259 case WPAS_MODE_INFRA:
260 params.mode = IEEE80211_MODE_INFRA;
263 params.mode = IEEE80211_MODE_IBSS;
266 case WPAS_MODE_P2P_GO:
267 case WPAS_MODE_P2P_GROUP_FORMATION:
268 params.mode = IEEE80211_MODE_AP;
271 params.freq = ssid->frequency;
273 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
274 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
276 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
277 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
279 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
280 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
281 else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
282 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
283 else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
284 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
286 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
290 params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
291 params.group_suite = params.pairwise_suite;
294 if (ssid->mode == WPAS_MODE_P2P_GO ||
295 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
297 #endif /* CONFIG_P2P */
299 if (wpa_s->parent->set_ap_uapsd)
300 params.uapsd = wpa_s->parent->ap_uapsd;
304 if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
305 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
309 wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
310 if (hapd_iface == NULL)
312 hapd_iface->owner = wpa_s;
314 wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
316 wpa_supplicant_ap_deinit(wpa_s);
320 if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
321 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
322 wpa_supplicant_ap_deinit(wpa_s);
327 if (ssid->mode == WPAS_MODE_P2P_GO)
328 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
329 else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
330 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
332 #endif /* CONFIG_P2P */
334 hapd_iface->num_bss = conf->num_bss;
335 hapd_iface->bss = os_zalloc(conf->num_bss *
336 sizeof(struct hostapd_data *));
337 if (hapd_iface->bss == NULL) {
338 wpa_supplicant_ap_deinit(wpa_s);
342 for (i = 0; i < conf->num_bss; i++) {
344 hostapd_alloc_bss_data(hapd_iface, conf,
346 if (hapd_iface->bss[i] == NULL) {
347 wpa_supplicant_ap_deinit(wpa_s);
351 hapd_iface->bss[i]->msg_ctx = wpa_s;
352 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
353 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
354 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
355 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
356 hostapd_register_probereq_cb(hapd_iface->bss[i],
357 ap_probe_req_rx, wpa_s);
358 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
359 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
361 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
362 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
363 wpa_s, ssid->p2p_persistent_group,
364 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
365 #endif /* CONFIG_P2P */
368 os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
369 hapd_iface->bss[0]->driver = wpa_s->driver;
370 hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
372 if (hostapd_setup_interface(wpa_s->ap_iface)) {
373 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
374 wpa_supplicant_ap_deinit(wpa_s);
378 wpa_s->current_ssid = ssid;
379 os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
380 wpa_s->assoc_freq = ssid->frequency;
381 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
383 if (wpa_s->ap_configured_cb)
384 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
385 wpa_s->ap_configured_cb_data);
391 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
393 if (wpa_s->ap_iface == NULL)
396 wpa_s->current_ssid = NULL;
398 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
399 wpas_p2p_group_deinit(wpa_s);
400 #endif /* CONFIG_P2P */
401 hostapd_interface_deinit(wpa_s->ap_iface);
402 hostapd_interface_free(wpa_s->ap_iface);
403 wpa_s->ap_iface = NULL;
404 wpa_drv_deinit_ap(wpa_s);
408 void ap_tx_status(void *ctx, const u8 *addr,
409 const u8 *buf, size_t len, int ack)
412 struct wpa_supplicant *wpa_s = ctx;
413 hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
414 #endif /* NEED_AP_MLME */
418 void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len)
421 struct wpa_supplicant *wpa_s = ctx;
422 const struct ieee80211_hdr *hdr =
423 (const struct ieee80211_hdr *) frame;
424 u16 fc = le_to_host16(hdr->frame_control);
425 ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
426 (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
427 (WLAN_FC_TODS | WLAN_FC_FROMDS));
428 #endif /* NEED_AP_MLME */
432 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
435 struct wpa_supplicant *wpa_s = ctx;
436 struct hostapd_frame_info fi;
437 os_memset(&fi, 0, sizeof(fi));
438 fi.datarate = rx_mgmt->datarate;
439 fi.ssi_signal = rx_mgmt->ssi_signal;
440 ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
441 rx_mgmt->frame_len, &fi);
442 #endif /* NEED_AP_MLME */
446 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
449 struct wpa_supplicant *wpa_s = ctx;
450 ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
451 #endif /* NEED_AP_MLME */
455 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
456 const u8 *src_addr, const u8 *buf, size_t len)
458 ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
464 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
466 if (!wpa_s->ap_iface)
468 return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]);
472 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
473 const char *pin, char *buf, size_t buflen)
475 int ret, ret_len = 0;
477 if (!wpa_s->ap_iface)
481 unsigned int rpin = wps_generate_pin();
482 ret_len = os_snprintf(buf, buflen, "%d", rpin);
485 ret_len = os_snprintf(buf, buflen, "%s", pin);
487 ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
494 #endif /* CONFIG_WPS */
497 #ifdef CONFIG_CTRL_IFACE
499 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
500 char *buf, size_t buflen)
502 if (wpa_s->ap_iface == NULL)
504 return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
509 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
510 char *buf, size_t buflen)
512 if (wpa_s->ap_iface == NULL)
514 return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
519 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
520 char *buf, size_t buflen)
522 if (wpa_s->ap_iface == NULL)
524 return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
529 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
530 size_t buflen, int verbose)
532 char *pos = buf, *end = buf + buflen;
534 struct hostapd_bss_config *conf;
536 if (wpa_s->ap_iface == NULL)
539 conf = wpa_s->ap_iface->bss[0]->conf;
543 ret = os_snprintf(pos, end - pos,
544 "pairwise_cipher=%s\n"
547 wpa_cipher_txt(conf->rsn_pairwise),
548 wpa_cipher_txt(conf->wpa_group),
549 wpa_key_mgmt_txt(conf->wpa_key_mgmt,
551 if (ret < 0 || ret >= end - pos)
557 #endif /* CONFIG_CTRL_IFACE */
560 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
562 struct hostapd_iface *iface = wpa_s->ap_iface;
563 struct wpa_ssid *ssid = wpa_s->current_ssid;
564 struct hostapd_data *hapd;
566 if (ssid == NULL || wpa_s->ap_iface == NULL)
570 if (ssid->mode == WPAS_MODE_P2P_GO)
571 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
572 else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
573 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
575 #endif /* CONFIG_P2P */
577 ieee802_11_set_beacons(iface);
578 hapd = iface->bss[0];
579 hapd->drv.set_ap_wps_ie(hapd);
585 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
588 struct hostapd_data *hapd;
589 struct hostapd_bss_config *conf;
591 if (!wpa_s->ap_iface)
595 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
598 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
600 hapd = wpa_s->ap_iface->bss[0];
603 os_free(conf->accept_mac);
604 conf->accept_mac = NULL;
605 conf->num_accept_mac = 0;
606 os_free(conf->deny_mac);
607 conf->deny_mac = NULL;
608 conf->num_deny_mac = 0;
611 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
615 conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
616 conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
617 if (conf->accept_mac == NULL)
619 os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
620 conf->num_accept_mac = 1;