git.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 #ifdef NEED_MLME
  22 #include "../hostapd/ieee802_11.h"
  23 #endif /* NEED_MLME */
  24 #include "eap_common/eap_defs.h"
  25 #include "eap_server/eap_methods.h"
  26 #include "eap_common/eap_wsc_common.h"
  27 #include "config_ssid.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31
  32
  33 int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
  34                                          void *ctx), void *ctx)
  35 {
  36         /* TODO */
  37         return 0;
  38 }
  39
  40
  41 int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
  42 {
  43         return 0;
  44 }
  45
  46
  47 void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
  48 {
  49 }
  50
  51
  52 struct ap_driver_data {
  53         struct hostapd_data *hapd;
  54 };
  55
  56
  57 static void * ap_driver_init(struct hostapd_data *hapd)
  58 {
  59         struct ap_driver_data *drv;
  60         struct wpa_supplicant *wpa_s = hapd->iface->owner;
  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         os_memcpy(hapd->own_addr, wpa_s->own_addr, ETH_ALEN);
  70
  71         return drv;
  72 }
  73
  74
  75 static void ap_driver_deinit(void *priv)
  76 {
  77         struct ap_driver_data *drv = priv;
  78
  79         os_free(drv);
  80 }
  81
  82
  83 static int ap_driver_send_ether(void *priv, const u8 *dst, const u8 *src,
  84                                 u16 proto, const u8 *data, size_t data_len)
  85 {
  86         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
  87         return -1;
  88 }
  89
  90
  91 static int ap_driver_set_key(const char *iface, void *priv, wpa_alg alg,
  92                              const u8 *addr, int key_idx, int set_tx,
  93                              const u8 *seq, size_t seq_len, const u8 *key,
  94                              size_t key_len)
  95 {
  96         struct ap_driver_data *drv = priv;
  97         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
  98         return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
  99                                key, key_len);
 100 }
 101
 102
 103 static int ap_driver_get_seqnum(const char *iface, void *priv, const u8 *addr,
 104                                 int idx, u8 *seq)
 105 {
 106         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 107         return -1;
 108 }
 109
 110
 111 static int ap_driver_flush(void *priv)
 112 {
 113         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 114         return -1;
 115 }
 116
 117
 118 static int ap_driver_read_sta_data(void *priv,
 119                                    struct hostap_sta_driver_data *data,
 120                                    const u8 *addr)
 121 {
 122         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 123         return -1;
 124 }
 125
 126
 127 static int ap_driver_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 128                                    int flags_or, int flags_and)
 129 {
 130         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 131         return -1;
 132 }
 133
 134
 135 static int ap_driver_sta_deauth(void *priv, const u8 *addr, int reason)
 136 {
 137         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 138         return -1;
 139 }
 140
 141
 142 static int ap_driver_sta_disassoc(void *priv, const u8 *addr, int reason)
 143 {
 144         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 145         return -1;
 146 }
 147
 148
 149 static int ap_driver_sta_remove(void *priv, const u8 *addr)
 150 {
 151         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 152         return -1;
 153 }
 154
 155
 156 static int ap_driver_send_mgmt_frame(void *priv, const void *data, size_t len,
 157                                      int flags)
 158 {
 159         struct ap_driver_data *drv = priv;
 160         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 161         return wpa_drv_send_mlme(wpa_s, data, len);
 162 }
 163
 164
 165 static int ap_driver_sta_add(const char *ifname, void *priv,
 166                              struct hostapd_sta_add_params *params)
 167 {
 168         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 169         return -1;
 170 }
 171
 172
 173 static int ap_driver_get_inact_sec(void *priv, const u8 *addr)
 174 {
 175         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 176         return -1;
 177 }
 178
 179
 180 static int ap_driver_set_freq(void *priv, struct hostapd_freq_params *freq)
 181 {
 182         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 183         return 0;
 184 }
 185
 186
 187 static int ap_driver_set_beacon(const char *iface, void *priv,
 188                                 const u8 *head, size_t head_len,
 189                                 const u8 *tail, size_t tail_len,
 190                                 int dtim_period)
 191 {
 192         struct ap_driver_data *drv = priv;
 193         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 194         return wpa_drv_set_beacon(wpa_s, head, head_len, tail, tail_len,
 195                                   dtim_period);
 196 }
 197
 198
 199 static int ap_driver_set_beacon_int(void *priv, int value)
 200 {
 201         struct ap_driver_data *drv = priv;
 202         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 203         return wpa_drv_set_beacon_int(wpa_s, value);
 204 }
 205
 206
 207 static int ap_driver_set_cts_protect(void *priv, int value)
 208 {
 209         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 210         return -1;
 211 }
 212
 213
 214 static int ap_driver_set_preamble(void *priv, int value)
 215 {
 216         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 217         return -1;
 218 }
 219
 220
 221 static int ap_driver_set_short_slot_time(void *priv, int value)
 222 {
 223         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 224         return -1;
 225 }
 226
 227
 228 static int ap_driver_set_tx_queue_params(void *priv, int queue, int aifs,
 229                                          int cw_min, int cw_max,
 230                                          int burst_time)
 231 {
 232         wpa_printf(MSG_DEBUG, "AP TODO: %s", __func__);
 233         return -1;
 234 }
 235
 236
 237 static struct hostapd_hw_modes *ap_driver_get_hw_feature_data(void *priv,
 238                                                               u16 *num_modes,
 239                                                               u16 *flags)
 240 {
 241         struct ap_driver_data *drv = priv;
 242         struct wpa_supplicant *wpa_s = drv->hapd->iface->owner;
 243         return wpa_drv_get_hw_feature_data(wpa_s, num_modes, flags);
 244 }
 245
 246
 247 struct wpa_driver_ops ap_driver_ops =
 248 {
 249         .name = "wpa_supplicant",
 250         .hapd_init = ap_driver_init,
 251         .hapd_deinit = ap_driver_deinit,
 252         .send_ether = ap_driver_send_ether,
 253         .hapd_set_key = ap_driver_set_key,
 254         .get_seqnum = ap_driver_get_seqnum,
 255         .flush = ap_driver_flush,
 256         .read_sta_data = ap_driver_read_sta_data,
 257         .sta_set_flags = ap_driver_sta_set_flags,
 258         .sta_deauth = ap_driver_sta_deauth,
 259         .sta_disassoc = ap_driver_sta_disassoc,
 260         .sta_remove = ap_driver_sta_remove,
 261         .send_mgmt_frame = ap_driver_send_mgmt_frame,
 262         .sta_add = ap_driver_sta_add,
 263         .get_inact_sec = ap_driver_get_inact_sec,
 264         .set_freq = ap_driver_set_freq,
 265         .hapd_set_beacon = ap_driver_set_beacon,
 266         .hapd_set_beacon_int = ap_driver_set_beacon_int,
 267         .set_cts_protect = ap_driver_set_cts_protect,
 268         .set_preamble = ap_driver_set_preamble,
 269         .set_short_slot_time = ap_driver_set_short_slot_time,
 270         .set_tx_queue_params = ap_driver_set_tx_queue_params,
 271         .hapd_get_hw_feature_data = ap_driver_get_hw_feature_data,
 272 };
 273
 274
 275 extern struct wpa_driver_ops *wpa_drivers[];
 276
 277 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
 278                                   struct wpa_ssid *ssid,
 279                                   struct hostapd_config *conf)
 280 {
 281         struct hostapd_bss_config *bss = &conf->bss[0];
 282         int j;
 283
 284         for (j = 0; wpa_drivers[j]; j++) {
 285                 if (os_strcmp("wpa_supplicant", wpa_drivers[j]->name) == 0) {
 286                         conf->driver = wpa_drivers[j];
 287                         break;
 288                 }
 289         }
 290         if (conf->driver == NULL) {
 291                 wpa_printf(MSG_ERROR, "No AP driver ops found");
 292                 return -1;
 293         }
 294
 295         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
 296
 297         if (ssid->frequency == 0) {
 298                 /* default channel 11 */
 299                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 300                 conf->channel = 11;
 301         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
 302                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 303                 conf->channel = (ssid->frequency - 2407) / 5;
 304         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
 305                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
 306                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 307                 conf->channel = (ssid->frequency - 5000) / 5;
 308         } else {
 309                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
 310                            ssid->frequency);
 311                 return -1;
 312         }
 313
 314         /* TODO: enable HT if driver supports it;
 315          * drop to 11b if driver does not support 11g */
 316
 317         if (ssid->ssid_len == 0) {
 318                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 319                 return -1;
 320         }
 321         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 322         bss->ssid.ssid[ssid->ssid_len] = '\0';
 323         bss->ssid.ssid_len = ssid->ssid_len;
 324         bss->ssid.ssid_set = 1;
 325
 326         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 327                 bss->wpa = ssid->proto;
 328         bss->wpa_key_mgmt = ssid->key_mgmt;
 329         bss->wpa_pairwise = ssid->pairwise_cipher;
 330         if (ssid->passphrase) {
 331                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 332                 if (hostapd_setup_wpa_psk(bss))
 333                         return -1;
 334         } else if (ssid->psk_set) {
 335                 os_free(bss->ssid.wpa_psk);
 336                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 337                 if (bss->ssid.wpa_psk == NULL)
 338                         return -1;
 339                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 340                 bss->ssid.wpa_psk->group = 1;
 341         }
 342
 343         return 0;
 344 }
 345
 346
 347 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 348                              struct wpa_ssid *ssid)
 349 {
 350         struct wpa_driver_associate_params params;
 351         struct hostapd_iface *hapd_iface;
 352         struct hostapd_config *conf;
 353         size_t i;
 354
 355         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 356                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 357                 return -1;
 358         }
 359
 360         wpa_supplicant_ap_deinit(wpa_s);
 361
 362         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 363                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 364
 365         os_memset(&params, 0, sizeof(params));
 366         params.ssid = ssid->ssid;
 367         params.ssid_len = ssid->ssid_len;
 368         params.mode = ssid->mode;
 369         params.freq = ssid->frequency;
 370
 371         if (wpa_drv_associate(wpa_s, &params) < 0) {
 372                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 373                 return -1;
 374         }
 375
 376         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 377         if (hapd_iface == NULL)
 378                 return -1;
 379         hapd_iface->owner = wpa_s;
 380
 381         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 382         if (conf == NULL) {
 383                 wpa_supplicant_ap_deinit(wpa_s);
 384                 return -1;
 385         }
 386
 387         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 388                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 389                 wpa_supplicant_ap_deinit(wpa_s);
 390                 return -1;
 391         }
 392
 393         hapd_iface->num_bss = conf->num_bss;
 394         hapd_iface->bss = os_zalloc(conf->num_bss *
 395                                     sizeof(struct hostapd_data *));
 396         if (hapd_iface->bss == NULL) {
 397                 wpa_supplicant_ap_deinit(wpa_s);
 398                 return -1;
 399         }
 400
 401         for (i = 0; i < conf->num_bss; i++) {
 402                 hapd_iface->bss[i] =
 403                         hostapd_alloc_bss_data(hapd_iface, conf,
 404                                                &conf->bss[i]);
 405                 if (hapd_iface->bss[i] == NULL) {
 406                         wpa_supplicant_ap_deinit(wpa_s);
 407                         return -1;
 408                 }
 409         }
 410
 411         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 412                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 413                 wpa_supplicant_ap_deinit(wpa_s);
 414                 return -1;
 415         }
 416
 417         return 0;
 418 }
 419
 420
 421 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 422 {
 423         if (wpa_s->ap_iface == NULL)
 424                 return;
 425
 426         hostapd_interface_deinit(wpa_s->ap_iface);
 427         wpa_s->ap_iface = NULL;
 428 }
 429
 430
 431 void ap_tx_status(void *ctx, const u8 *addr,
 432                   const u8 *buf, size_t len, int ack)
 433 {
 434         struct wpa_supplicant *wpa_s = ctx;
 435         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 436 }
 437
 438
 439 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr)
 440 {
 441         struct wpa_supplicant *wpa_s = ctx;
 442         ap_rx_from_unknown_sta(wpa_s->ap_iface->bss[0], addr);
 443 }
 444
 445
 446 #ifdef NEED_MLME
 447 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
 448                 struct hostapd_frame_info *fi)
 449 {
 450         struct wpa_supplicant *wpa_s = ctx;
 451         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], buf, len, stype, fi);
 452 }
 453
 454
 455 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok)
 456 {
 457         struct wpa_supplicant *wpa_s = ctx;
 458         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 459 }
 460 #endif /* NEED_MLME */