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f1a48710 JM |
1 | /* |
2 | * WPA Supplicant - Basic AP mode support routines | |
3 | * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi> | |
4 | * Copyright (c) 2009, Atheros Communications | |
5 | * | |
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. | |
9 | * | |
10 | * Alternatively, this software may be distributed under the terms of BSD | |
11 | * license. | |
12 | * | |
13 | * See README and COPYING for more details. | |
14 | */ | |
15 | ||
6226e38d | 16 | #include "utils/includes.h" |
f1a48710 | 17 | |
6226e38d | 18 | #include "utils/common.h" |
58c26600 | 19 | #include "common/ieee802_11_defs.h" |
1057d78e | 20 | #include "ap/hostapd.h" |
6226e38d | 21 | #include "ap/ap_config.h" |
fe6bdb77 | 22 | #ifdef NEED_AP_MLME |
1057d78e | 23 | #include "ap/ieee802_11.h" |
fe6bdb77 | 24 | #endif /* NEED_AP_MLME */ |
a8e0505b | 25 | #include "ap/ieee802_1x.h" |
363b9e60 | 26 | #include "ap/wps_hostapd.h" |
0e2d35c6 | 27 | #include "ap/ctrl_iface_ap.h" |
f1a48710 JM |
28 | #include "eap_common/eap_defs.h" |
29 | #include "eap_server/eap_methods.h" | |
30 | #include "eap_common/eap_wsc_common.h" | |
3ec97afe | 31 | #include "wps/wps.h" |
1f1b62a0 | 32 | #include "config_ssid.h" |
094393b1 | 33 | #include "config.h" |
1f1b62a0 | 34 | #include "wpa_supplicant_i.h" |
2d5b792d JM |
35 | #include "driver_i.h" |
36 | #include "ap.h" | |
f1a48710 JM |
37 | |
38 | ||
07f117ed JM |
39 | static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s, |
40 | struct wpa_ssid *ssid, | |
41 | struct hostapd_config *conf) | |
42 | { | |
43 | struct hostapd_bss_config *bss = &conf->bss[0]; | |
a911a6e6 | 44 | int pairwise; |
c5121837 | 45 | |
a911a6e6 | 46 | conf->driver = wpa_s->driver; |
07f117ed JM |
47 | |
48 | os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface)); | |
49 | ||
50 | if (ssid->frequency == 0) { | |
51 | /* default channel 11 */ | |
52 | conf->hw_mode = HOSTAPD_MODE_IEEE80211G; | |
53 | conf->channel = 11; | |
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)) { | |
b615a25e | 59 | conf->hw_mode = HOSTAPD_MODE_IEEE80211A; |
07f117ed JM |
60 | conf->channel = (ssid->frequency - 5000) / 5; |
61 | } else { | |
62 | wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz", | |
63 | ssid->frequency); | |
64 | return -1; | |
65 | } | |
66 | ||
67 | /* TODO: enable HT if driver supports it; | |
68 | * drop to 11b if driver does not support 11g */ | |
69 | ||
70 | if (ssid->ssid_len == 0) { | |
71 | wpa_printf(MSG_ERROR, "No SSID configured for AP mode"); | |
72 | return -1; | |
73 | } | |
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; | |
78 | ||
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); | |
07f117ed JM |
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) | |
89 | return -1; | |
90 | os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN); | |
91 | bss->ssid.wpa_psk->group = 1; | |
92 | } | |
93 | ||
07d9a552 JM |
94 | /* Select group cipher based on the enabled pairwise cipher suites */ |
95 | pairwise = 0; | |
96 | if (bss->wpa & 1) | |
97 | pairwise |= bss->wpa_pairwise; | |
98 | if (bss->wpa & 2) { | |
99 | if (bss->rsn_pairwise == 0) | |
100 | bss->rsn_pairwise = bss->wpa_pairwise; | |
101 | pairwise |= bss->rsn_pairwise; | |
102 | } | |
103 | if (pairwise & WPA_CIPHER_TKIP) | |
104 | bss->wpa_group = WPA_CIPHER_TKIP; | |
105 | else | |
106 | bss->wpa_group = WPA_CIPHER_CCMP; | |
107 | ||
108 | if (bss->wpa && bss->ieee802_1x) | |
109 | bss->ssid.security_policy = SECURITY_WPA; | |
110 | else if (bss->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; | |
117 | else | |
118 | bss->ssid.security_policy = SECURITY_PLAINTEXT; | |
119 | ||
3ec97afe JM |
120 | #ifdef CONFIG_WPS |
121 | /* | |
122 | * Enable WPS by default, but require user interaction to actually use | |
123 | * it. Only the internal Registrar is supported. | |
124 | */ | |
125 | bss->eap_server = 1; | |
126 | bss->wps_state = 2; | |
127 | bss->ap_setup_locked = 1; | |
094393b1 JM |
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); | |
3ec97afe JM |
132 | #endif /* CONFIG_WPS */ |
133 | ||
07f117ed JM |
134 | return 0; |
135 | } | |
136 | ||
137 | ||
2d5b792d JM |
138 | int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s, |
139 | struct wpa_ssid *ssid) | |
140 | { | |
141 | struct wpa_driver_associate_params params; | |
142 | struct hostapd_iface *hapd_iface; | |
143 | struct hostapd_config *conf; | |
144 | size_t i; | |
f1a48710 | 145 | |
2d5b792d JM |
146 | if (ssid->ssid == NULL || ssid->ssid_len == 0) { |
147 | wpa_printf(MSG_ERROR, "No SSID configured for AP mode"); | |
148 | return -1; | |
f1a48710 JM |
149 | } |
150 | ||
2d5b792d | 151 | wpa_supplicant_ap_deinit(wpa_s); |
d2440ba0 JM |
152 | |
153 | wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')", | |
154 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
155 | ||
156 | os_memset(¶ms, 0, sizeof(params)); | |
157 | params.ssid = ssid->ssid; | |
158 | params.ssid_len = ssid->ssid_len; | |
d7dcba70 JM |
159 | switch (ssid->mode) { |
160 | case WPAS_MODE_INFRA: | |
161 | params.mode = IEEE80211_MODE_INFRA; | |
162 | break; | |
163 | case WPAS_MODE_IBSS: | |
164 | params.mode = IEEE80211_MODE_IBSS; | |
165 | break; | |
166 | case WPAS_MODE_AP: | |
167 | params.mode = IEEE80211_MODE_AP; | |
168 | break; | |
169 | } | |
d2440ba0 JM |
170 | params.freq = ssid->frequency; |
171 | ||
172 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { | |
173 | wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality"); | |
174 | return -1; | |
175 | } | |
176 | ||
2d5b792d JM |
177 | wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface)); |
178 | if (hapd_iface == NULL) | |
179 | return -1; | |
0f2b2c19 | 180 | hapd_iface->owner = wpa_s; |
1f1b62a0 | 181 | |
2d5b792d JM |
182 | wpa_s->ap_iface->conf = conf = hostapd_config_defaults(); |
183 | if (conf == NULL) { | |
184 | wpa_supplicant_ap_deinit(wpa_s); | |
185 | return -1; | |
186 | } | |
1f1b62a0 | 187 | |
07f117ed JM |
188 | if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) { |
189 | wpa_printf(MSG_ERROR, "Failed to create AP configuration"); | |
190 | wpa_supplicant_ap_deinit(wpa_s); | |
191 | return -1; | |
192 | } | |
193 | ||
2d5b792d JM |
194 | hapd_iface->num_bss = conf->num_bss; |
195 | hapd_iface->bss = os_zalloc(conf->num_bss * | |
196 | sizeof(struct hostapd_data *)); | |
197 | if (hapd_iface->bss == NULL) { | |
198 | wpa_supplicant_ap_deinit(wpa_s); | |
199 | return -1; | |
200 | } | |
1f1b62a0 | 201 | |
2d5b792d JM |
202 | for (i = 0; i < conf->num_bss; i++) { |
203 | hapd_iface->bss[i] = | |
204 | hostapd_alloc_bss_data(hapd_iface, conf, | |
205 | &conf->bss[i]); | |
206 | if (hapd_iface->bss[i] == NULL) { | |
207 | wpa_supplicant_ap_deinit(wpa_s); | |
208 | return -1; | |
209 | } | |
4f760fcc JM |
210 | |
211 | hapd_iface->bss[i]->msg_ctx = wpa_s; | |
2d5b792d JM |
212 | } |
213 | ||
a911a6e6 JM |
214 | os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN); |
215 | hapd_iface->bss[0]->driver = wpa_s->driver; | |
216 | hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv; | |
217 | ||
218 | if (hostapd_setup_interface(wpa_s->ap_iface)) { | |
2d5b792d JM |
219 | wpa_printf(MSG_ERROR, "Failed to initialize AP interface"); |
220 | wpa_supplicant_ap_deinit(wpa_s); | |
221 | return -1; | |
1f1b62a0 JM |
222 | } |
223 | ||
b2cc8056 | 224 | wpa_s->current_ssid = ssid; |
43fb5297 | 225 | os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN); |
137fb724 WS |
226 | wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); |
227 | ||
2d5b792d JM |
228 | return 0; |
229 | } | |
230 | ||
231 | ||
232 | void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s) | |
233 | { | |
234 | if (wpa_s->ap_iface == NULL) | |
235 | return; | |
236 | ||
237 | hostapd_interface_deinit(wpa_s->ap_iface); | |
f7c47833 | 238 | hostapd_interface_free(wpa_s->ap_iface); |
2d5b792d | 239 | wpa_s->ap_iface = NULL; |
1f1b62a0 | 240 | } |
0915d02c JM |
241 | |
242 | ||
243 | void ap_tx_status(void *ctx, const u8 *addr, | |
244 | const u8 *buf, size_t len, int ack) | |
245 | { | |
f8b1f695 | 246 | #ifdef NEED_AP_MLME |
0915d02c JM |
247 | struct wpa_supplicant *wpa_s = ctx; |
248 | hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack); | |
f8b1f695 | 249 | #endif /* NEED_AP_MLME */ |
0915d02c JM |
250 | } |
251 | ||
252 | ||
fdbe50ed | 253 | void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len) |
0915d02c | 254 | { |
f8b1f695 | 255 | #ifdef NEED_AP_MLME |
0915d02c | 256 | struct wpa_supplicant *wpa_s = ctx; |
fdbe50ed JM |
257 | const struct ieee80211_hdr *hdr = |
258 | (const struct ieee80211_hdr *) frame; | |
fbbfcbac FF |
259 | u16 fc = le_to_host16(hdr->frame_control); |
260 | ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2, | |
261 | (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) == | |
262 | (WLAN_FC_TODS | WLAN_FC_FROMDS)); | |
f8b1f695 | 263 | #endif /* NEED_AP_MLME */ |
0915d02c JM |
264 | } |
265 | ||
266 | ||
2a8b7416 | 267 | void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt) |
0915d02c | 268 | { |
f8b1f695 | 269 | #ifdef NEED_AP_MLME |
0915d02c | 270 | struct wpa_supplicant *wpa_s = ctx; |
2a8b7416 JM |
271 | struct hostapd_frame_info fi; |
272 | os_memset(&fi, 0, sizeof(fi)); | |
273 | fi.datarate = rx_mgmt->datarate; | |
274 | fi.ssi_signal = rx_mgmt->ssi_signal; | |
275 | ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame, | |
276 | rx_mgmt->frame_len, &fi); | |
f8b1f695 | 277 | #endif /* NEED_AP_MLME */ |
0915d02c JM |
278 | } |
279 | ||
280 | ||
f8b1f695 | 281 | void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok) |
0915d02c | 282 | { |
f8b1f695 | 283 | #ifdef NEED_AP_MLME |
0915d02c JM |
284 | struct wpa_supplicant *wpa_s = ctx; |
285 | ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok); | |
fe6bdb77 | 286 | #endif /* NEED_AP_MLME */ |
f8b1f695 | 287 | } |
db149ac9 JM |
288 | |
289 | ||
290 | void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s, | |
291 | const u8 *src_addr, const u8 *buf, size_t len) | |
292 | { | |
a8e0505b | 293 | ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len); |
db149ac9 | 294 | } |
3ec97afe JM |
295 | |
296 | ||
297 | #ifdef CONFIG_WPS | |
298 | ||
299 | int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid) | |
300 | { | |
301 | return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]); | |
302 | } | |
303 | ||
304 | ||
305 | int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, | |
306 | const char *pin, char *buf, size_t buflen) | |
307 | { | |
308 | int ret, ret_len = 0; | |
309 | ||
310 | if (pin == NULL) { | |
311 | unsigned int rpin = wps_generate_pin(); | |
312 | ret_len = os_snprintf(buf, buflen, "%d", rpin); | |
313 | pin = buf; | |
314 | } | |
315 | ||
077a781f | 316 | ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], "any", pin, 0); |
3ec97afe JM |
317 | if (ret) |
318 | return -1; | |
319 | return ret_len; | |
320 | } | |
321 | ||
322 | #endif /* CONFIG_WPS */ | |
e653b622 JM |
323 | |
324 | ||
35deb646 JM |
325 | #ifdef CONFIG_CTRL_IFACE |
326 | ||
e653b622 JM |
327 | int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s, |
328 | char *buf, size_t buflen) | |
329 | { | |
330 | if (wpa_s->ap_iface == NULL) | |
331 | return -1; | |
332 | return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0], | |
333 | buf, buflen); | |
334 | } | |
335 | ||
336 | ||
337 | int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr, | |
338 | char *buf, size_t buflen) | |
339 | { | |
340 | if (wpa_s->ap_iface == NULL) | |
341 | return -1; | |
342 | return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr, | |
343 | buf, buflen); | |
344 | } | |
345 | ||
346 | ||
347 | int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr, | |
348 | char *buf, size_t buflen) | |
349 | { | |
350 | if (wpa_s->ap_iface == NULL) | |
351 | return -1; | |
352 | return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr, | |
353 | buf, buflen); | |
354 | } | |
35deb646 | 355 | |
43fb5297 JM |
356 | |
357 | int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf, | |
358 | size_t buflen, int verbose) | |
359 | { | |
360 | char *pos = buf, *end = buf + buflen; | |
361 | int ret; | |
362 | struct hostapd_bss_config *conf; | |
363 | ||
364 | if (wpa_s->ap_iface == NULL) | |
365 | return -1; | |
366 | ||
367 | conf = wpa_s->ap_iface->bss[0]->conf; | |
368 | if (conf->wpa == 0) | |
369 | return 0; | |
370 | ||
371 | ret = os_snprintf(pos, end - pos, | |
372 | "pairwise_cipher=%s\n" | |
373 | "group_cipher=%s\n" | |
374 | "key_mgmt=%s\n", | |
375 | wpa_cipher_txt(conf->rsn_pairwise), | |
376 | wpa_cipher_txt(conf->wpa_group), | |
377 | wpa_key_mgmt_txt(conf->wpa_key_mgmt, | |
378 | conf->wpa)); | |
379 | if (ret < 0 || ret >= end - pos) | |
380 | return pos - buf; | |
381 | pos += ret; | |
382 | return pos - buf; | |
383 | } | |
384 | ||
35deb646 | 385 | #endif /* CONFIG_CTRL_IFACE */ |