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/ieee802_1x.h"
26 #include "ap/wps_hostapd.h"
27 #include "ap/ctrl_iface_ap.h"
28 #include "eap_common/eap_defs.h"
29 #include "eap_server/eap_methods.h"
30 #include "eap_common/eap_wsc_common.h"
32 #include "config_ssid.h"
34 #include "wpa_supplicant_i.h"
39 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
40 struct wpa_ssid *ssid,
41 struct hostapd_config *conf)
43 struct hostapd_bss_config *bss = &conf->bss[0];
46 conf->driver = wpa_s->driver;
48 os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
50 if (ssid->frequency == 0) {
51 /* default channel 11 */
52 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
54 } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
55 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
56 conf->channel = (ssid->frequency - 2407) / 5;
57 } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
58 (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
59 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
60 conf->channel = (ssid->frequency - 5000) / 5;
62 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
67 /* TODO: enable HT if driver supports it;
68 * drop to 11b if driver does not support 11g */
70 if (ssid->ssid_len == 0) {
71 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
74 os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
75 bss->ssid.ssid[ssid->ssid_len] = '\0';
76 bss->ssid.ssid_len = ssid->ssid_len;
77 bss->ssid.ssid_set = 1;
79 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
80 bss->wpa = ssid->proto;
81 bss->wpa_key_mgmt = ssid->key_mgmt;
82 bss->wpa_pairwise = ssid->pairwise_cipher;
83 if (ssid->passphrase) {
84 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
85 } else if (ssid->psk_set) {
86 os_free(bss->ssid.wpa_psk);
87 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
88 if (bss->ssid.wpa_psk == NULL)
90 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
91 bss->ssid.wpa_psk->group = 1;
94 /* Select group cipher based on the enabled pairwise cipher suites */
97 pairwise |= bss->wpa_pairwise;
99 if (bss->rsn_pairwise == 0)
100 bss->rsn_pairwise = bss->wpa_pairwise;
101 pairwise |= bss->rsn_pairwise;
103 if (pairwise & WPA_CIPHER_TKIP)
104 bss->wpa_group = WPA_CIPHER_TKIP;
106 bss->wpa_group = WPA_CIPHER_CCMP;
108 if (bss->wpa && bss->ieee802_1x)
109 bss->ssid.security_policy = SECURITY_WPA;
111 bss->ssid.security_policy = SECURITY_WPA_PSK;
112 else if (bss->ieee802_1x) {
113 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
114 bss->ssid.wep.default_len = bss->default_wep_key_len;
115 } else if (bss->ssid.wep.keys_set)
116 bss->ssid.security_policy = SECURITY_STATIC_WEP;
118 bss->ssid.security_policy = SECURITY_PLAINTEXT;
122 * Enable WPS by default, but require user interaction to actually use
123 * it. Only the internal Registrar is supported.
127 bss->ap_setup_locked = 1;
128 if (wpa_s->conf->config_methods)
129 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
130 if (wpa_s->conf->device_type)
131 bss->device_type = os_strdup(wpa_s->conf->device_type);
132 #endif /* CONFIG_WPS */
138 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
139 struct wpa_ssid *ssid)
141 struct wpa_driver_associate_params params;
142 struct hostapd_iface *hapd_iface;
143 struct hostapd_config *conf;
146 if (ssid->ssid == NULL || ssid->ssid_len == 0) {
147 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
151 wpa_supplicant_ap_deinit(wpa_s);
153 wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
154 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
156 os_memset(¶ms, 0, sizeof(params));
157 params.ssid = ssid->ssid;
158 params.ssid_len = ssid->ssid_len;
159 switch (ssid->mode) {
160 case WPAS_MODE_INFRA:
161 params.mode = IEEE80211_MODE_INFRA;
164 params.mode = IEEE80211_MODE_IBSS;
167 params.mode = IEEE80211_MODE_AP;
170 params.freq = ssid->frequency;
172 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
173 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
175 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
176 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
178 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
179 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
180 else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
181 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
182 else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
183 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
185 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
189 params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
190 params.group_suite = params.pairwise_suite;
192 if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
193 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
197 wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
198 if (hapd_iface == NULL)
200 hapd_iface->owner = wpa_s;
202 wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
204 wpa_supplicant_ap_deinit(wpa_s);
208 if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
209 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
210 wpa_supplicant_ap_deinit(wpa_s);
214 hapd_iface->num_bss = conf->num_bss;
215 hapd_iface->bss = os_zalloc(conf->num_bss *
216 sizeof(struct hostapd_data *));
217 if (hapd_iface->bss == NULL) {
218 wpa_supplicant_ap_deinit(wpa_s);
222 for (i = 0; i < conf->num_bss; i++) {
224 hostapd_alloc_bss_data(hapd_iface, conf,
226 if (hapd_iface->bss[i] == NULL) {
227 wpa_supplicant_ap_deinit(wpa_s);
231 hapd_iface->bss[i]->msg_ctx = wpa_s;
234 os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
235 hapd_iface->bss[0]->driver = wpa_s->driver;
236 hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
238 if (hostapd_setup_interface(wpa_s->ap_iface)) {
239 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
240 wpa_supplicant_ap_deinit(wpa_s);
244 wpa_s->current_ssid = ssid;
245 os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
246 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
248 if (wpa_s->ap_configured_cb)
249 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
250 wpa_s->ap_configured_cb_data);
256 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
258 if (wpa_s->ap_iface == NULL)
261 wpa_s->current_ssid = NULL;
262 hostapd_interface_deinit(wpa_s->ap_iface);
263 hostapd_interface_free(wpa_s->ap_iface);
264 wpa_s->ap_iface = NULL;
265 wpa_drv_deinit_ap(wpa_s);
269 void ap_tx_status(void *ctx, const u8 *addr,
270 const u8 *buf, size_t len, int ack)
273 struct wpa_supplicant *wpa_s = ctx;
274 hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
275 #endif /* NEED_AP_MLME */
279 void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len)
282 struct wpa_supplicant *wpa_s = ctx;
283 const struct ieee80211_hdr *hdr =
284 (const struct ieee80211_hdr *) frame;
285 u16 fc = le_to_host16(hdr->frame_control);
286 ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
287 (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
288 (WLAN_FC_TODS | WLAN_FC_FROMDS));
289 #endif /* NEED_AP_MLME */
293 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
296 struct wpa_supplicant *wpa_s = ctx;
297 struct hostapd_frame_info fi;
298 os_memset(&fi, 0, sizeof(fi));
299 fi.datarate = rx_mgmt->datarate;
300 fi.ssi_signal = rx_mgmt->ssi_signal;
301 ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
302 rx_mgmt->frame_len, &fi);
303 #endif /* NEED_AP_MLME */
307 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
310 struct wpa_supplicant *wpa_s = ctx;
311 ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
312 #endif /* NEED_AP_MLME */
316 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
317 const u8 *src_addr, const u8 *buf, size_t len)
319 ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
325 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
327 return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]);
331 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
332 const char *pin, char *buf, size_t buflen)
334 int ret, ret_len = 0;
337 unsigned int rpin = wps_generate_pin();
338 ret_len = os_snprintf(buf, buflen, "%d", rpin);
342 ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], "any", pin, 0);
348 #endif /* CONFIG_WPS */
351 #ifdef CONFIG_CTRL_IFACE
353 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
354 char *buf, size_t buflen)
356 if (wpa_s->ap_iface == NULL)
358 return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
363 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
364 char *buf, size_t buflen)
366 if (wpa_s->ap_iface == NULL)
368 return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
373 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
374 char *buf, size_t buflen)
376 if (wpa_s->ap_iface == NULL)
378 return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
383 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
384 size_t buflen, int verbose)
386 char *pos = buf, *end = buf + buflen;
388 struct hostapd_bss_config *conf;
390 if (wpa_s->ap_iface == NULL)
393 conf = wpa_s->ap_iface->bss[0]->conf;
397 ret = os_snprintf(pos, end - pos,
398 "pairwise_cipher=%s\n"
401 wpa_cipher_txt(conf->rsn_pairwise),
402 wpa_cipher_txt(conf->wpa_group),
403 wpa_key_mgmt_txt(conf->wpa_key_mgmt,
405 if (ret < 0 || ret >= end - pos)
411 #endif /* CONFIG_CTRL_IFACE */