vcs.maemo.org Git - wpasupplicant/blob - wpa_supplicant/ap.c

   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
  16 #include "includes.h"
  17
  18 #include "common.h"
  19 #include "../hostapd/hostapd.h"
  20 #include "../hostapd/config.h"
  21 #include "../hostapd/driver.h"
  22 #ifdef NEED_MLME
  23 #include "../hostapd/ieee802_11.h"
  24 #endif /* NEED_MLME */
  25 #include "eap_common/eap_defs.h"
  26 #include "eap_server/eap_methods.h"
  27 #include "eap_common/eap_wsc_common.h"
  28 #include "config_ssid.h"
  29 #include "wpa_supplicant_i.h"
  30 #include "driver_i.h"
  31 #include "ap.h"
  32
  33
  34 int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
  35                                          void *ctx), void *ctx)
  36 {
  37         /* TODO */
  38         return 0;
  39 }
  40
  41
  42 int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
  43 {
  44         return 0;
  45 }
  46
  47
  48 void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
  49 {
  50 }
  51
  52
  53 struct ap_driver_data {
  54         struct hostapd_data *hapd;
  55 };
  56
  57
  58 static void * ap_driver_init(struct hostapd_data *hapd)
  59 {
  60         struct ap_driver_data *drv;
  61
  62         drv = os_zalloc(sizeof(struct ap_driver_data));
  63         if (drv == NULL) {
  64                 wpa_printf(MSG_ERROR, "Could not allocate memory for AP "
  65                            "driver data");
  66                 return NULL;
  67         }
  68         drv->hapd = hapd;
  69
  70         return drv;
  71 }
  72
  73
  74 static void ap_driver_deinit(void *priv)
  75 {
  76         struct ap_driver_data *drv = priv;
  77
  78         os_free(drv);
  79 }
  80
  81
  82 static int ap_driver_send_ether(void *priv, const u8 *dst, const u8 *src,
  83                                 u16 proto, const u8 *data, size_t data_len)
  84 {
  85         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
  86         return -1;
  87 }
  88
  89
  90 static int ap_driver_set_key(const char *iface, void *priv, wpa_alg alg,
  91                              const u8 *addr, int key_idx, int set_tx,
  92                              const u8 *seq, size_t seq_len, const u8 *key,
  93                              size_t key_len)
  94 {
  95         struct ap_driver_data *drv = priv;
  96         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
  97         return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
  98                                key, key_len);
  99 }
 100
 101
 102 static int ap_driver_get_seqnum(const char *iface, void *priv, const u8 *addr,
 103                                 int idx, u8 *seq)
 104 {
 105         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 106         return -1;
 107 }
 108
 109
 110 static int ap_driver_flush(void *priv)
 111 {
 112         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 113         return -1;
 114 }
 115
 116
 117 static int ap_driver_read_sta_data(void *priv,
 118                                    struct hostap_sta_driver_data *data,
 119                                    const u8 *addr)
 120 {
 121         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 122         return -1;
 123 }
 124
 125
 126 static int ap_driver_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 127                                    int flags_or, int flags_and)
 128 {
 129         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 130         return -1;
 131 }
 132
 133
 134 static int ap_driver_sta_deauth(void *priv, const u8 *addr, int reason)
 135 {
 136         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 137         return -1;
 138 }
 139
 140
 141 static int ap_driver_sta_disassoc(void *priv, const u8 *addr, int reason)
 142 {
 143         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 144         return -1;
 145 }
 146
 147
 148 static int ap_driver_sta_remove(void *priv, const u8 *addr)
 149 {
 150         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 151         return -1;
 152 }
 153
 154
 155 static int ap_driver_send_mgmt_frame(void *priv, const void *data, size_t len,
 156                                      int flags)
 157 {
 158         struct ap_driver_data *drv = priv;
 159         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 160         return wpa_drv_send_mlme(wpa_s, data, len);
 161 }
 162
 163
 164 static int ap_driver_sta_add(const char *ifname, void *priv,
 165                              struct hostapd_sta_add_params *params)
 166 {
 167         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 168         return -1;
 169 }
 170
 171
 172 static int ap_driver_get_inact_sec(void *priv, const u8 *addr)
 173 {
 174         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 175         return -1;
 176 }
 177
 178
 179 static int ap_driver_set_freq(void *priv, struct hostapd_freq_params *freq)
 180 {
 181         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 182         return 0;
 183 }
 184
 185
 186 static int ap_driver_set_beacon(const char *iface, void *priv,
 187                                 const u8 *head, size_t head_len,
 188                                 const u8 *tail, size_t tail_len,
 189                                 int dtim_period)
 190 {
 191         struct ap_driver_data *drv = priv;
 192         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 193         return wpa_drv_set_beacon(wpa_s, head, head_len, tail, tail_len,
 194                                   dtim_period);
 195 }
 196
 197
 198 static int ap_driver_set_beacon_int(void *priv, int value)
 199 {
 200         struct ap_driver_data *drv = priv;
 201         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 202         return wpa_drv_set_beacon_int(wpa_s, value);
 203 }
 204
 205
 206 static int ap_driver_set_cts_protect(void *priv, int value)
 207 {
 208         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 209         return -1;
 210 }
 211
 212
 213 static int ap_driver_set_preamble(void *priv, int value)
 214 {
 215         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 216         return -1;
 217 }
 218
 219
 220 static int ap_driver_set_short_slot_time(void *priv, int value)
 221 {
 222         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 223         return -1;
 224 }
 225
 226
 227 static int ap_driver_set_tx_queue_params(void *priv, int queue, int aifs,
 228                                          int cw_min, int cw_max,
 229                                          int burst_time)
 230 {
 231         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 232         return -1;
 233 }
 234
 235
 236 static struct hostapd_hw_modes *ap_driver_get_hw_feature_data(void *priv,
 237                                                               u16 *num_modes,
 238                                                               u16 *flags)
 239 {
 240         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 241         return NULL;
 242 }
 243
 244
 245 static struct hapd_driver_ops ap_driver_ops =
 246 {
 247         .name = "wpa_supplicant",
 248         .init = ap_driver_init,
 249         .deinit = ap_driver_deinit,
 250         .send_ether = ap_driver_send_ether,
 251         .set_key = ap_driver_set_key,
 252         .get_seqnum = ap_driver_get_seqnum,
 253         .flush = ap_driver_flush,
 254         .read_sta_data = ap_driver_read_sta_data,
 255         .sta_set_flags = ap_driver_sta_set_flags,
 256         .sta_deauth = ap_driver_sta_deauth,
 257         .sta_disassoc = ap_driver_sta_disassoc,
 258         .sta_remove = ap_driver_sta_remove,
 259         .send_mgmt_frame = ap_driver_send_mgmt_frame,
 260         .sta_add = ap_driver_sta_add,
 261         .get_inact_sec = ap_driver_get_inact_sec,
 262         .set_freq = ap_driver_set_freq,
 263         .set_beacon = ap_driver_set_beacon,
 264         .set_beacon_int = ap_driver_set_beacon_int,
 265         .set_cts_protect = ap_driver_set_cts_protect,
 266         .set_preamble = ap_driver_set_preamble,
 267         .set_short_slot_time = ap_driver_set_short_slot_time,
 268         .set_tx_queue_params = ap_driver_set_tx_queue_params,
 269         .get_hw_feature_data = ap_driver_get_hw_feature_data,
 270 };
 271
 272 struct hapd_driver_ops *hostapd_drivers[] =
 273 {
 274         &ap_driver_ops,
 275         NULL
 276 };
 277
 278
 279 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
 280                                   struct wpa_ssid *ssid,
 281                                   struct hostapd_config *conf)
 282 {
 283         struct hostapd_bss_config *bss = &conf->bss[0];
 284
 285         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
 286
 287         if (ssid->frequency == 0) {
 288                 /* default channel 11 */
 289                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 290                 conf->channel = 11;
 291         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
 292                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 293                 conf->channel = (ssid->frequency - 2407) / 5;
 294         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
 295                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
 296                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 297                 conf->channel = (ssid->frequency - 5000) / 5;
 298         } else {
 299                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
 300                            ssid->frequency);
 301                 return -1;
 302         }
 303
 304         /* TODO: enable HT if driver supports it;
 305          * drop to 11b if driver does not support 11g */
 306
 307         if (ssid->ssid_len == 0) {
 308                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 309                 return -1;
 310         }
 311         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 312         bss->ssid.ssid[ssid->ssid_len] = '\0';
 313         bss->ssid.ssid_len = ssid->ssid_len;
 314         bss->ssid.ssid_set = 1;
 315
 316         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 317                 bss->wpa = ssid->proto;
 318         bss->wpa_key_mgmt = ssid->key_mgmt;
 319         bss->wpa_pairwise = ssid->pairwise_cipher;
 320         if (ssid->passphrase) {
 321                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 322                 if (hostapd_setup_wpa_psk(bss))
 323                         return -1;
 324         } else if (ssid->psk_set) {
 325                 os_free(bss->ssid.wpa_psk);
 326                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 327                 if (bss->ssid.wpa_psk == NULL)
 328                         return -1;
 329                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 330                 bss->ssid.wpa_psk->group = 1;
 331         }
 332
 333         return 0;
 334 }
 335
 336
 337 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 338                              struct wpa_ssid *ssid)
 339 {
 340         struct wpa_driver_associate_params params;
 341         struct hostapd_iface *hapd_iface;
 342         struct hostapd_config *conf;
 343         size_t i;
 344
 345         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 346                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 347                 return -1;
 348         }
 349
 350         wpa_supplicant_ap_deinit(wpa_s);
 351
 352         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 353                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 354
 355         os_memset(&params, 0, sizeof(params));
 356         params.ssid = ssid->ssid;
 357         params.ssid_len = ssid->ssid_len;
 358         params.mode = ssid->mode;
 359         params.freq = ssid->frequency;
 360
 361         if (wpa_drv_associate(wpa_s, &params) < 0) {
 362                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 363                 return -1;
 364         }
 365
 366         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 367         if (hapd_iface == NULL)
 368                 return -1;
 369         hapd_iface->owner = wpa_s;
 370
 371         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 372         if (conf == NULL) {
 373                 wpa_supplicant_ap_deinit(wpa_s);
 374                 return -1;
 375         }
 376
 377         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 378                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 379                 wpa_supplicant_ap_deinit(wpa_s);
 380                 return -1;
 381         }
 382
 383         hapd_iface->num_bss = conf->num_bss;
 384         hapd_iface->bss = os_zalloc(conf->num_bss *
 385                                     sizeof(struct hostapd_data *));
 386         if (hapd_iface->bss == NULL) {
 387                 wpa_supplicant_ap_deinit(wpa_s);
 388                 return -1;
 389         }
 390
 391         for (i = 0; i < conf->num_bss; i++) {
 392                 hapd_iface->bss[i] =
 393                         hostapd_alloc_bss_data(hapd_iface, conf,
 394                                                &conf->bss[i]);
 395                 if (hapd_iface->bss[i] == NULL) {
 396                         wpa_supplicant_ap_deinit(wpa_s);
 397                         return -1;
 398                 }
 399         }
 400
 401         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 402                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 403                 wpa_supplicant_ap_deinit(wpa_s);
 404                 return -1;
 405         }
 406
 407         return 0;
 408 }
 409
 410
 411 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 412 {
 413         if (wpa_s->ap_iface == NULL)
 414                 return;
 415
 416         hostapd_interface_deinit(wpa_s->ap_iface);
 417         wpa_s->ap_iface = NULL;
 418 }
 419
 420
 421 void ap_tx_status(void *ctx, const u8 *addr,
 422                   const u8 *buf, size_t len, int ack)
 423 {
 424         struct wpa_supplicant *wpa_s = ctx;
 425         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 426 }
 427
 428
 429 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr)
 430 {
 431         struct wpa_supplicant *wpa_s = ctx;
 432         ap_rx_from_unknown_sta(wpa_s->ap_iface->bss[0], addr);
 433 }
 434
 435
 436 #ifdef NEED_MLME
 437 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
 438                 struct hostapd_frame_info *fi)
 439 {
 440         struct wpa_supplicant *wpa_s = ctx;
 441         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], buf, len, stype, fi);
 442 }
 443
 444
 445 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok)
 446 {
 447         struct wpa_supplicant *wpa_s = ctx;
 448         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 449 }
 450 #endif /* NEED_MLME */