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 "ap/hostapd.h"
20 #include "ap/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 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
38 struct wpa_ssid *ssid,
39 struct hostapd_config *conf)
41 struct hostapd_bss_config *bss = &conf->bss[0];
44 conf->driver = wpa_s->driver;
46 os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
48 if (ssid->frequency == 0) {
49 /* default channel 11 */
50 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
52 } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
53 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
54 conf->channel = (ssid->frequency - 2407) / 5;
55 } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
56 (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
57 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
58 conf->channel = (ssid->frequency - 5000) / 5;
60 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
65 /* TODO: enable HT if driver supports it;
66 * drop to 11b if driver does not support 11g */
68 if (ssid->ssid_len == 0) {
69 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
72 os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
73 bss->ssid.ssid[ssid->ssid_len] = '\0';
74 bss->ssid.ssid_len = ssid->ssid_len;
75 bss->ssid.ssid_set = 1;
77 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
78 bss->wpa = ssid->proto;
79 bss->wpa_key_mgmt = ssid->key_mgmt;
80 bss->wpa_pairwise = ssid->pairwise_cipher;
81 if (ssid->passphrase) {
82 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
83 } else if (ssid->psk_set) {
84 os_free(bss->ssid.wpa_psk);
85 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
86 if (bss->ssid.wpa_psk == NULL)
88 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
89 bss->ssid.wpa_psk->group = 1;
92 /* Select group cipher based on the enabled pairwise cipher suites */
95 pairwise |= bss->wpa_pairwise;
97 if (bss->rsn_pairwise == 0)
98 bss->rsn_pairwise = bss->wpa_pairwise;
99 pairwise |= bss->rsn_pairwise;
101 if (pairwise & WPA_CIPHER_TKIP)
102 bss->wpa_group = WPA_CIPHER_TKIP;
104 bss->wpa_group = WPA_CIPHER_CCMP;
106 if (bss->wpa && bss->ieee802_1x)
107 bss->ssid.security_policy = SECURITY_WPA;
109 bss->ssid.security_policy = SECURITY_WPA_PSK;
110 else if (bss->ieee802_1x) {
111 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
112 bss->ssid.wep.default_len = bss->default_wep_key_len;
113 } else if (bss->ssid.wep.keys_set)
114 bss->ssid.security_policy = SECURITY_STATIC_WEP;
116 bss->ssid.security_policy = SECURITY_PLAINTEXT;
120 * Enable WPS by default, but require user interaction to actually use
121 * it. Only the internal Registrar is supported.
125 bss->ap_setup_locked = 1;
126 if (wpa_s->conf->config_methods)
127 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
128 if (wpa_s->conf->device_type)
129 bss->device_type = os_strdup(wpa_s->conf->device_type);
130 #endif /* CONFIG_WPS */
136 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
137 struct wpa_ssid *ssid)
139 struct wpa_driver_associate_params params;
140 struct hostapd_iface *hapd_iface;
141 struct hostapd_config *conf;
144 if (ssid->ssid == NULL || ssid->ssid_len == 0) {
145 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
149 wpa_supplicant_ap_deinit(wpa_s);
151 wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
152 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
154 os_memset(¶ms, 0, sizeof(params));
155 params.ssid = ssid->ssid;
156 params.ssid_len = ssid->ssid_len;
157 params.mode = ssid->mode;
158 params.freq = ssid->frequency;
160 if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
161 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
165 wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
166 if (hapd_iface == NULL)
168 hapd_iface->owner = wpa_s;
170 wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
172 wpa_supplicant_ap_deinit(wpa_s);
176 if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
177 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
178 wpa_supplicant_ap_deinit(wpa_s);
182 hapd_iface->num_bss = conf->num_bss;
183 hapd_iface->bss = os_zalloc(conf->num_bss *
184 sizeof(struct hostapd_data *));
185 if (hapd_iface->bss == NULL) {
186 wpa_supplicant_ap_deinit(wpa_s);
190 for (i = 0; i < conf->num_bss; i++) {
192 hostapd_alloc_bss_data(hapd_iface, conf,
194 if (hapd_iface->bss[i] == NULL) {
195 wpa_supplicant_ap_deinit(wpa_s);
199 hapd_iface->bss[i]->msg_ctx = wpa_s;
202 os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
203 hapd_iface->bss[0]->driver = wpa_s->driver;
204 hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
206 if (hostapd_setup_interface(wpa_s->ap_iface)) {
207 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
208 wpa_supplicant_ap_deinit(wpa_s);
212 wpa_s->current_ssid = ssid;
213 os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
214 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
220 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
222 if (wpa_s->ap_iface == NULL)
225 hostapd_interface_deinit(wpa_s->ap_iface);
226 hostapd_interface_free(wpa_s->ap_iface);
227 wpa_s->ap_iface = NULL;
231 void ap_tx_status(void *ctx, const u8 *addr,
232 const u8 *buf, size_t len, int ack)
235 struct wpa_supplicant *wpa_s = ctx;
236 hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
237 #endif /* NEED_AP_MLME */
241 void ap_rx_from_unknown_sta(void *ctx, const struct ieee80211_hdr *hdr,
245 struct wpa_supplicant *wpa_s = ctx;
246 u16 fc = le_to_host16(hdr->frame_control);
247 ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
248 (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
249 (WLAN_FC_TODS | WLAN_FC_FROMDS));
250 #endif /* NEED_AP_MLME */
254 void ap_mgmt_rx(void *ctx, const u8 *buf, size_t len,
255 struct hostapd_frame_info *fi)
258 struct wpa_supplicant *wpa_s = ctx;
259 ieee802_11_mgmt(wpa_s->ap_iface->bss[0], buf, len, fi);
260 #endif /* NEED_AP_MLME */
264 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
267 struct wpa_supplicant *wpa_s = ctx;
268 ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
269 #endif /* NEED_AP_MLME */
273 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
274 const u8 *src_addr, const u8 *buf, size_t len)
276 hostapd_eapol_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
282 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
284 return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]);
288 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
289 const char *pin, char *buf, size_t buflen)
291 int ret, ret_len = 0;
294 unsigned int rpin = wps_generate_pin();
295 ret_len = os_snprintf(buf, buflen, "%d", rpin);
299 ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], "any", pin, 0);
305 #endif /* CONFIG_WPS */
308 #ifdef CONFIG_CTRL_IFACE
310 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
311 char *buf, size_t buflen)
313 if (wpa_s->ap_iface == NULL)
315 return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
320 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
321 char *buf, size_t buflen)
323 if (wpa_s->ap_iface == NULL)
325 return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
330 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
331 char *buf, size_t buflen)
333 if (wpa_s->ap_iface == NULL)
335 return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
340 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
341 size_t buflen, int verbose)
343 char *pos = buf, *end = buf + buflen;
345 struct hostapd_bss_config *conf;
347 if (wpa_s->ap_iface == NULL)
350 conf = wpa_s->ap_iface->bss[0]->conf;
354 ret = os_snprintf(pos, end - pos,
355 "pairwise_cipher=%s\n"
358 wpa_cipher_txt(conf->rsn_pairwise),
359 wpa_cipher_txt(conf->wpa_group),
360 wpa_key_mgmt_txt(conf->wpa_key_mgmt,
362 if (ret < 0 || ret >= end - pos)
368 #endif /* CONFIG_CTRL_IFACE */