git.maemo.org Git - wpasupplicant/blob - hostapd/driver_madwifi.c

   1 /*
   2  * hostapd / Driver interaction with MADWIFI 802.11 driver
   3  * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   4  * Copyright (c) 2004, Video54 Technologies
   5  * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Alternatively, this software may be distributed under the terms of BSD
  12  * license.
  13  *
  14  * See README and COPYING for more details.
  15  */
  16
  17 #include "includes.h"
  18 #include <net/if.h>
  19 #include <sys/ioctl.h>
  20
  21 #include <include/compat.h>
  22 #include <net80211/ieee80211.h>
  23 #ifdef WME_NUM_AC
  24 /* Assume this is built against BSD branch of madwifi driver. */
  25 #define MADWIFI_BSD
  26 #include <net80211/_ieee80211.h>
  27 #endif /* WME_NUM_AC */
  28 #include <net80211/ieee80211_crypto.h>
  29 #include <net80211/ieee80211_ioctl.h>
  30
  31 #ifdef CONFIG_WPS
  32 #ifdef IEEE80211_IOCTL_FILTERFRAME
  33 #include <netpacket/packet.h>
  34
  35 #ifndef ETH_P_80211_RAW
  36 #define ETH_P_80211_RAW 0x0019
  37 #endif
  38 #endif /* IEEE80211_IOCTL_FILTERFRAME */
  39 #endif /* CONFIG_WPS */
  40
  41 /*
  42  * Avoid conflicts with hostapd definitions by undefining couple of defines
  43  * from madwifi header files.
  44  */
  45 #undef RSN_VERSION
  46 #undef WPA_VERSION
  47 #undef WPA_OUI_TYPE
  48 #undef WME_OUI_TYPE
  49
  50
  51 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
  52 /* Assume this is built against madwifi-ng */
  53 #define MADWIFI_NG
  54 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
  55
  56 #include "wireless_copy.h"
  57
  58 #include "hostapd.h"
  59 #include "driver.h"
  60 #include "ieee802_1x.h"
  61 #include "eloop.h"
  62 #include "priv_netlink.h"
  63 #include "sta_info.h"
  64 #include "l2_packet/l2_packet.h"
  65
  66 #include "wpa.h"
  67 #include "radius/radius.h"
  68 #include "ieee802_11.h"
  69 #include "accounting.h"
  70 #include "common.h"
  71 #include "wps_hostapd.h"
  72
  73
  74 struct madwifi_driver_data {
  75         struct hostapd_data *hapd;              /* back pointer */
  76
  77         char    iface[IFNAMSIZ + 1];
  78         int     ifindex;
  79         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  80         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  81         int     ioctl_sock;                     /* socket for ioctl() use */
  82         int     wext_sock;                      /* socket for wireless events */
  83         int     we_version;
  84         u8      acct_mac[ETH_ALEN];
  85         struct hostap_sta_driver_data acct_data;
  86
  87         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  88 };
  89
  90 static int madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code);
  91
  92 static int
  93 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
  94 {
  95         struct iwreq iwr;
  96         int do_inline = len < IFNAMSIZ;
  97
  98         memset(&iwr, 0, sizeof(iwr));
  99         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 100 #ifdef IEEE80211_IOCTL_FILTERFRAME
 101         /* FILTERFRAME must be NOT inline, regardless of size. */
 102         if (op == IEEE80211_IOCTL_FILTERFRAME)
 103                 do_inline = 0;
 104 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 105         if (do_inline) {
 106                 /*
 107                  * Argument data fits inline; put it there.
 108                  */
 109                 memcpy(iwr.u.name, data, len);
 110         } else {
 111                 /*
 112                  * Argument data too big for inline transfer; setup a
 113                  * parameter block instead; the kernel will transfer
 114                  * the data for the driver.
 115                  */
 116                 iwr.u.data.pointer = data;
 117                 iwr.u.data.length = len;
 118         }
 119
 120         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 121 #ifdef MADWIFI_NG
 122                 int first = IEEE80211_IOCTL_SETPARAM;
 123                 static const char *opnames[] = {
 124                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 125                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 126                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 127                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 128                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 129                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 130                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 131                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 132                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 133                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 134                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 135                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 136                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 137                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 138                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 139                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 140                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 141                         NULL,
 142                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 143                         NULL,
 144                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 145                         NULL,
 146                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 147                         NULL,
 148                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 149                         NULL,
 150                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 151                         NULL,
 152                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 153                         NULL,
 154                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 155                 };
 156 #else /* MADWIFI_NG */
 157                 int first = IEEE80211_IOCTL_SETPARAM;
 158                 static const char *opnames[] = {
 159                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 160                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 161                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 162                         "ioctl[SIOCIWFIRSTPRIV+3]",
 163                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 164                         "ioctl[SIOCIWFIRSTPRIV+5]",
 165                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 166                         "ioctl[SIOCIWFIRSTPRIV+7]",
 167                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 168                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 169                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 170                         "ioctl[SIOCIWFIRSTPRIV+11]",
 171                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 172                         "ioctl[SIOCIWFIRSTPRIV+13]",
 173                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 174                         "ioctl[SIOCIWFIRSTPRIV+15]",
 175                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 176                         "ioctl[SIOCIWFIRSTPRIV+17]",
 177                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 178                 };
 179 #endif /* MADWIFI_NG */
 180                 int idx = op - first;
 181                 if (first <= op &&
 182                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 183                     opnames[idx])
 184                         perror(opnames[idx]);
 185                 else
 186                         perror("ioctl[unknown???]");
 187                 return -1;
 188         }
 189         return 0;
 190 }
 191
 192 static int
 193 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 194 {
 195         struct iwreq iwr;
 196
 197         memset(&iwr, 0, sizeof(iwr));
 198         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 199         iwr.u.mode = op;
 200         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 201
 202         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 203                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 204                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 205                            "arg %d)", __func__, op, arg);
 206                 return -1;
 207         }
 208         return 0;
 209 }
 210
 211 static const char *
 212 ether_sprintf(const u8 *addr)
 213 {
 214         static char buf[sizeof(MACSTR)];
 215
 216         if (addr != NULL)
 217                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 218         else
 219                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 220         return buf;
 221 }
 222
 223 /*
 224  * Configure WPA parameters.
 225  */
 226 static int
 227 madwifi_configure_wpa(struct madwifi_driver_data *drv)
 228 {
 229         struct hostapd_data *hapd = drv->hapd;
 230         struct hostapd_bss_config *conf = hapd->conf;
 231         int v;
 232
 233         switch (conf->wpa_group) {
 234         case WPA_CIPHER_CCMP:
 235                 v = IEEE80211_CIPHER_AES_CCM;
 236                 break;
 237         case WPA_CIPHER_TKIP:
 238                 v = IEEE80211_CIPHER_TKIP;
 239                 break;
 240         case WPA_CIPHER_WEP104:
 241                 v = IEEE80211_CIPHER_WEP;
 242                 break;
 243         case WPA_CIPHER_WEP40:
 244                 v = IEEE80211_CIPHER_WEP;
 245                 break;
 246         case WPA_CIPHER_NONE:
 247                 v = IEEE80211_CIPHER_NONE;
 248                 break;
 249         default:
 250                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 251                            conf->wpa_group);
 252                 return -1;
 253         }
 254         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 255         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 256                 printf("Unable to set group key cipher to %u\n", v);
 257                 return -1;
 258         }
 259         if (v == IEEE80211_CIPHER_WEP) {
 260                 /* key length is done only for specific ciphers */
 261                 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 262                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 263                         printf("Unable to set group key length to %u\n", v);
 264                         return -1;
 265                 }
 266         }
 267
 268         v = 0;
 269         if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 270                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 271         if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 272                 v |= 1<<IEEE80211_CIPHER_TKIP;
 273         if (conf->wpa_pairwise & WPA_CIPHER_NONE)
 274                 v |= 1<<IEEE80211_CIPHER_NONE;
 275         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 276         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 277                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 278                 return -1;
 279         }
 280
 281         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 282                    __func__, conf->wpa_key_mgmt);
 283         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
 284                 printf("Unable to set key management algorithms to 0x%x\n",
 285                         conf->wpa_key_mgmt);
 286                 return -1;
 287         }
 288
 289         v = 0;
 290         if (conf->rsn_preauth)
 291                 v |= BIT(0);
 292         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 293                    __func__, conf->rsn_preauth);
 294         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 295                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 296                 return -1;
 297         }
 298
 299         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, conf->wpa);
 300         if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
 301                 printf("Unable to set WPA to %u\n", conf->wpa);
 302                 return -1;
 303         }
 304         return 0;
 305 }
 306
 307
 308 static int
 309 madwifi_set_iface_flags(void *priv, int dev_up)
 310 {
 311         struct madwifi_driver_data *drv = priv;
 312         struct ifreq ifr;
 313
 314         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 315
 316         if (drv->ioctl_sock < 0)
 317                 return -1;
 318
 319         memset(&ifr, 0, sizeof(ifr));
 320         os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 321
 322         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 323                 perror("ioctl[SIOCGIFFLAGS]");
 324                 return -1;
 325         }
 326
 327         if (dev_up)
 328                 ifr.ifr_flags |= IFF_UP;
 329         else
 330                 ifr.ifr_flags &= ~IFF_UP;
 331
 332         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 333                 perror("ioctl[SIOCSIFFLAGS]");
 334                 return -1;
 335         }
 336
 337         if (dev_up) {
 338                 memset(&ifr, 0, sizeof(ifr));
 339                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 340                 ifr.ifr_mtu = HOSTAPD_MTU;
 341                 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
 342                         perror("ioctl[SIOCSIFMTU]");
 343                         printf("Setting MTU failed - trying to survive with "
 344                                "current value\n");
 345                 }
 346         }
 347
 348         return 0;
 349 }
 350
 351 static int
 352 madwifi_set_ieee8021x(const char *ifname, void *priv, int enabled)
 353 {
 354         struct madwifi_driver_data *drv = priv;
 355         struct hostapd_data *hapd = drv->hapd;
 356         struct hostapd_bss_config *conf = hapd->conf;
 357
 358         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 359
 360         if (!enabled) {
 361                 /* XXX restore state */
 362                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 363                         IEEE80211_AUTH_AUTO);
 364         }
 365         if (!conf->wpa && !conf->ieee802_1x) {
 366                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 367                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 368                 return -1;
 369         }
 370         if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
 371                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 372                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 373                 return -1;
 374         }
 375         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 376                 (conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 377                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 378                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 379                 return -1;
 380         }
 381
 382         return 0;
 383 }
 384
 385 static int
 386 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
 387 {
 388         struct madwifi_driver_data *drv = priv;
 389
 390         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 391
 392         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 393 }
 394
 395 static int
 396 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 397 {
 398         struct madwifi_driver_data *drv = priv;
 399         struct ieee80211req_mlme mlme;
 400         int ret;
 401
 402         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 403                    __func__, ether_sprintf(addr), authorized);
 404
 405         if (authorized)
 406                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 407         else
 408                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 409         mlme.im_reason = 0;
 410         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 411         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 412         if (ret < 0) {
 413                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 414                            __func__, authorized ? "" : "un", MAC2STR(addr));
 415         }
 416
 417         return ret;
 418 }
 419
 420 static int
 421 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 422                       int flags_or, int flags_and)
 423 {
 424         /* For now, only support setting Authorized flag */
 425         if (flags_or & WLAN_STA_AUTHORIZED)
 426                 return madwifi_set_sta_authorized(priv, addr, 1);
 427         if (!(flags_and & WLAN_STA_AUTHORIZED))
 428                 return madwifi_set_sta_authorized(priv, addr, 0);
 429         return 0;
 430 }
 431
 432 static int
 433 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 434 {
 435         struct madwifi_driver_data *drv = priv;
 436         struct ieee80211req_del_key wk;
 437         int ret;
 438
 439         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 440                    __func__, ether_sprintf(addr), key_idx);
 441
 442         memset(&wk, 0, sizeof(wk));
 443         if (addr != NULL) {
 444                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 445                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 446         } else {
 447                 wk.idk_keyix = key_idx;
 448         }
 449
 450         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 451         if (ret < 0) {
 452                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 453                            " key_idx %d)", __func__, ether_sprintf(addr),
 454                            key_idx);
 455         }
 456
 457         return ret;
 458 }
 459
 460 static int
 461 madwifi_set_key(const char *ifname, void *priv, const char *alg,
 462                 const u8 *addr, int key_idx,
 463                 const u8 *key, size_t key_len, int txkey)
 464 {
 465         struct madwifi_driver_data *drv = priv;
 466         struct ieee80211req_key wk;
 467         u_int8_t cipher;
 468         int ret;
 469
 470         if (strcmp(alg, "none") == 0)
 471                 return madwifi_del_key(drv, addr, key_idx);
 472
 473         wpa_printf(MSG_DEBUG, "%s: alg=%s addr=%s key_idx=%d",
 474                    __func__, alg, ether_sprintf(addr), key_idx);
 475
 476         if (strcmp(alg, "WEP") == 0)
 477                 cipher = IEEE80211_CIPHER_WEP;
 478         else if (strcmp(alg, "TKIP") == 0)
 479                 cipher = IEEE80211_CIPHER_TKIP;
 480         else if (strcmp(alg, "CCMP") == 0)
 481                 cipher = IEEE80211_CIPHER_AES_CCM;
 482         else {
 483                 printf("%s: unknown/unsupported algorithm %s\n",
 484                         __func__, alg);
 485                 return -1;
 486         }
 487
 488         if (key_len > sizeof(wk.ik_keydata)) {
 489                 printf("%s: key length %lu too big\n", __func__,
 490                        (unsigned long) key_len);
 491                 return -3;
 492         }
 493
 494         memset(&wk, 0, sizeof(wk));
 495         wk.ik_type = cipher;
 496         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 497         if (addr == NULL) {
 498                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 499                 wk.ik_keyix = key_idx;
 500                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 501         } else {
 502                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 503                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 504         }
 505         wk.ik_keylen = key_len;
 506         memcpy(wk.ik_keydata, key, key_len);
 507
 508         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 509         if (ret < 0) {
 510                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 511                            " key_idx %d alg '%s' key_len %lu txkey %d)",
 512                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 513                            alg, (unsigned long) key_len, txkey);
 514         }
 515
 516         return ret;
 517 }
 518
 519
 520 static int
 521 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 522                    u8 *seq)
 523 {
 524         struct madwifi_driver_data *drv = priv;
 525         struct ieee80211req_key wk;
 526
 527         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 528                    __func__, ether_sprintf(addr), idx);
 529
 530         memset(&wk, 0, sizeof(wk));
 531         if (addr == NULL)
 532                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 533         else
 534                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 535         wk.ik_keyix = idx;
 536
 537         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 538                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 539                            "(addr " MACSTR " key_idx %d)",
 540                            __func__, MAC2STR(wk.ik_macaddr), idx);
 541                 return -1;
 542         }
 543
 544 #ifdef WORDS_BIGENDIAN
 545         {
 546                 /*
 547                  * wk.ik_keytsc is in host byte order (big endian), need to
 548                  * swap it to match with the byte order used in WPA.
 549                  */
 550                 int i;
 551                 u8 tmp[WPA_KEY_RSC_LEN];
 552                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 553                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 554                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 555                 }
 556         }
 557 #else /* WORDS_BIGENDIAN */
 558         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 559 #endif /* WORDS_BIGENDIAN */
 560         return 0;
 561 }
 562
 563
 564 static int
 565 madwifi_flush(void *priv)
 566 {
 567 #ifdef MADWIFI_BSD
 568         u8 allsta[IEEE80211_ADDR_LEN];
 569         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 570         return madwifi_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
 571 #else /* MADWIFI_BSD */
 572         return 0;               /* XXX */
 573 #endif /* MADWIFI_BSD */
 574 }
 575
 576
 577 static int
 578 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 579                              const u8 *addr)
 580 {
 581         struct madwifi_driver_data *drv = priv;
 582
 583 #ifdef MADWIFI_BSD
 584         struct ieee80211req_sta_stats stats;
 585
 586         memset(data, 0, sizeof(*data));
 587
 588         /*
 589          * Fetch statistics for station from the system.
 590          */
 591         memset(&stats, 0, sizeof(stats));
 592         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 593         if (set80211priv(drv,
 594 #ifdef MADWIFI_NG
 595                          IEEE80211_IOCTL_STA_STATS,
 596 #else /* MADWIFI_NG */
 597                          IEEE80211_IOCTL_GETSTASTATS,
 598 #endif /* MADWIFI_NG */
 599                          &stats, sizeof(stats))) {
 600                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 601                            MACSTR ")", __func__, MAC2STR(addr));
 602                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 603                         memcpy(data, &drv->acct_data, sizeof(*data));
 604                         return 0;
 605                 }
 606
 607                 printf("Failed to get station stats information element.\n");
 608                 return -1;
 609         }
 610
 611         data->rx_packets = stats.is_stats.ns_rx_data;
 612         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 613         data->tx_packets = stats.is_stats.ns_tx_data;
 614         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 615         return 0;
 616
 617 #else /* MADWIFI_BSD */
 618
 619         char buf[1024], line[128], *pos;
 620         FILE *f;
 621         unsigned long val;
 622
 623         memset(data, 0, sizeof(*data));
 624         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 625                  drv->iface, MAC2STR(addr));
 626
 627         f = fopen(buf, "r");
 628         if (!f) {
 629                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 630                         return -1;
 631                 memcpy(data, &drv->acct_data, sizeof(*data));
 632                 return 0;
 633         }
 634         /* Need to read proc file with in one piece, so use large enough
 635          * buffer. */
 636         setbuffer(f, buf, sizeof(buf));
 637
 638         while (fgets(line, sizeof(line), f)) {
 639                 pos = strchr(line, '=');
 640                 if (!pos)
 641                         continue;
 642                 *pos++ = '\0';
 643                 val = strtoul(pos, NULL, 10);
 644                 if (strcmp(line, "rx_packets") == 0)
 645                         data->rx_packets = val;
 646                 else if (strcmp(line, "tx_packets") == 0)
 647                         data->tx_packets = val;
 648                 else if (strcmp(line, "rx_bytes") == 0)
 649                         data->rx_bytes = val;
 650                 else if (strcmp(line, "tx_bytes") == 0)
 651                         data->tx_bytes = val;
 652         }
 653
 654         fclose(f);
 655
 656         return 0;
 657 #endif /* MADWIFI_BSD */
 658 }
 659
 660
 661 static int
 662 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 663 {
 664 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 665         struct madwifi_driver_data *drv = priv;
 666         struct ieee80211req_mlme mlme;
 667         int ret;
 668
 669         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 670
 671         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 672         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 673         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 674                            sizeof(mlme));
 675         if (ret < 0) {
 676                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 677                            MACSTR ")", __func__, MAC2STR(addr));
 678         }
 679
 680         return ret;
 681 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 682         return 0; /* FIX */
 683 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 684 }
 685
 686
 687 static int
 688 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 689 {
 690         /*
 691          * Do nothing; we setup parameters at startup that define the
 692          * contents of the beacon information element.
 693          */
 694         return 0;
 695 }
 696
 697 static int
 698 madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code)
 699 {
 700         struct madwifi_driver_data *drv = priv;
 701         struct ieee80211req_mlme mlme;
 702         int ret;
 703
 704         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 705                    __func__, ether_sprintf(addr), reason_code);
 706
 707         mlme.im_op = IEEE80211_MLME_DEAUTH;
 708         mlme.im_reason = reason_code;
 709         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 710         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 711         if (ret < 0) {
 712                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 713                            " reason %d)",
 714                            __func__, MAC2STR(addr), reason_code);
 715         }
 716
 717         return ret;
 718 }
 719
 720 static int
 721 madwifi_sta_disassoc(void *priv, const u8 *addr, int reason_code)
 722 {
 723         struct madwifi_driver_data *drv = priv;
 724         struct ieee80211req_mlme mlme;
 725         int ret;
 726
 727         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 728                    __func__, ether_sprintf(addr), reason_code);
 729
 730         mlme.im_op = IEEE80211_MLME_DISASSOC;
 731         mlme.im_reason = reason_code;
 732         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 733         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 734         if (ret < 0) {
 735                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 736                            MACSTR " reason %d)",
 737                            __func__, MAC2STR(addr), reason_code);
 738         }
 739
 740         return ret;
 741 }
 742
 743 #ifdef CONFIG_WPS
 744 #ifdef IEEE80211_IOCTL_FILTERFRAME
 745 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 746                                 size_t len)
 747 {
 748         struct madwifi_driver_data *drv = ctx;
 749         const struct ieee80211_mgmt *mgmt;
 750         const u8 *end, *ie;
 751         u16 fc;
 752         size_t ie_len;
 753
 754         /* Send Probe Request information to WPS processing */
 755
 756         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 757                 return;
 758         mgmt = (const struct ieee80211_mgmt *) buf;
 759
 760         fc = le_to_host16(mgmt->frame_control);
 761         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 762             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 763                 return;
 764
 765         end = buf + len;
 766         ie = mgmt->u.probe_req.variable;
 767         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 768
 769         hostapd_wps_probe_req_rx(drv->hapd, mgmt->sa, ie, ie_len);
 770 }
 771 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 772 #endif /* CONFIG_WPS */
 773
 774 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 775 {
 776         int ret = 0;
 777 #ifdef CONFIG_WPS
 778 #ifdef IEEE80211_IOCTL_FILTERFRAME
 779         struct ieee80211req_set_filter filt;
 780
 781         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 782         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 783
 784         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 785                            sizeof(struct ieee80211req_set_filter));
 786         if (ret)
 787                 return ret;
 788
 789         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 790                                        madwifi_raw_receive, drv, 1);
 791         if (drv->sock_raw == NULL)
 792                 return -1;
 793 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 794 #endif /* CONFIG_WPS */
 795         return ret;
 796 }
 797
 798 static int
 799 madwifi_del_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 800 {
 801         struct hostapd_data *hapd = drv->hapd;
 802         struct sta_info *sta;
 803
 804         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 805                 HOSTAPD_LEVEL_INFO, "disassociated");
 806
 807         sta = ap_get_sta(hapd, addr);
 808         if (sta != NULL) {
 809                 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 810                 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
 811                 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
 812                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 813                 ap_free_sta(hapd, sta);
 814         }
 815         return 0;
 816 }
 817
 818 #ifdef CONFIG_WPS
 819 static int
 820 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 821 {
 822         struct madwifi_driver_data *drv = priv;
 823         u8 buf[256];
 824         struct ieee80211req_getset_appiebuf *beac_ie;
 825
 826         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 827                    (unsigned long) len);
 828
 829         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 830         beac_ie->app_frmtype = frametype;
 831         beac_ie->app_buflen = len;
 832         memcpy(&(beac_ie->app_buf[0]), ie, len);
 833
 834         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 835                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 836 }
 837
 838 static int
 839 madwifi_set_wps_beacon_ie(const char *ifname, void *priv, const u8 *ie,
 840                           size_t len)
 841 {
 842         return madwifi_set_wps_ie(priv, ie, len, IEEE80211_APPIE_FRAME_BEACON);
 843 }
 844
 845 static int
 846 madwifi_set_wps_probe_resp_ie(const char *ifname, void *priv, const u8 *ie,
 847                               size_t len)
 848 {
 849         return madwifi_set_wps_ie(priv, ie, len,
 850                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 851 }
 852 #else /* CONFIG_WPS */
 853 #define madwifi_set_wps_beacon_ie NULL
 854 #define madwifi_set_wps_probe_resp_ie NULL
 855 #endif /* CONFIG_WPS */
 856
 857 static int
 858 madwifi_process_wpa_ie(struct madwifi_driver_data *drv, struct sta_info *sta)
 859 {
 860         struct hostapd_data *hapd = drv->hapd;
 861         struct ieee80211req_wpaie ie;
 862         int ielen, res;
 863         u8 *iebuf;
 864
 865         /*
 866          * Fetch negotiated WPA/RSN parameters from the system.
 867          */
 868         memset(&ie, 0, sizeof(ie));
 869         memcpy(ie.wpa_macaddr, sta->addr, IEEE80211_ADDR_LEN);
 870         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 871                 wpa_printf(MSG_ERROR, "%s: Failed to get WPA/RSN IE",
 872                            __func__);
 873                 printf("Failed to get WPA/RSN information element.\n");
 874                 return -1;              /* XXX not right */
 875         }
 876         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 877                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 878         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 879                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 880         iebuf = ie.wpa_ie;
 881         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 882          * Assume the IE was not included if the IE type is unknown. */
 883         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 884                 iebuf[1] = 0;
 885 #ifdef MADWIFI_NG
 886         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 887                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 888                  * set. This is needed for WPA2. */
 889                 iebuf = ie.rsn_ie;
 890                 if (iebuf[0] != WLAN_EID_RSN)
 891                         iebuf[1] = 0;
 892         }
 893 #endif /* MADWIFI_NG */
 894         ielen = iebuf[1];
 895         if (ielen == 0) {
 896 #ifdef CONFIG_WPS
 897                 if (hapd->conf->wps_state) {
 898                         wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
 899                                    "in (Re)Association Request - possible WPS "
 900                                    "use");
 901                         sta->flags |= WLAN_STA_MAYBE_WPS;
 902                         return 0;
 903                 }
 904 #endif /* CONFIG_WPS */
 905                 printf("No WPA/RSN information element for station!?\n");
 906                 return -1;              /* XXX not right */
 907         }
 908         ielen += 2;
 909         if (sta->wpa_sm == NULL)
 910                 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 911         if (sta->wpa_sm == NULL) {
 912                 printf("Failed to initialize WPA state machine\n");
 913                 return -1;
 914         }
 915         res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 916                                   iebuf, ielen, NULL, 0);
 917         if (res != WPA_IE_OK) {
 918                 printf("WPA/RSN information element rejected? (res %u)\n", res);
 919                 return -1;
 920         }
 921         return 0;
 922 }
 923
 924 static int
 925 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 926 {
 927         struct hostapd_data *hapd = drv->hapd;
 928         struct sta_info *sta;
 929         int new_assoc;
 930
 931         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 932                 HOSTAPD_LEVEL_INFO, "associated");
 933
 934         sta = ap_get_sta(hapd, addr);
 935         if (sta) {
 936                 accounting_sta_stop(hapd, sta);
 937         } else {
 938                 sta = ap_sta_add(hapd, addr);
 939                 if (sta == NULL)
 940                         return -1;
 941         }
 942
 943         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 944                 /* Cached accounting data is not valid anymore. */
 945                 memset(drv->acct_mac, 0, ETH_ALEN);
 946                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 947         }
 948
 949         if (hapd->conf->wpa) {
 950                 if (madwifi_process_wpa_ie(drv, sta))
 951                         return -1;
 952         }
 953
 954         /*
 955          * Now that the internal station state is setup
 956          * kick the authenticator into action.
 957          */
 958         new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
 959         sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
 960         wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
 961         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
 962         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
 963         return 0;
 964 }
 965
 966 static void
 967 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 968                                        char *custom)
 969 {
 970         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 971
 972         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 973                 char *pos;
 974                 u8 addr[ETH_ALEN];
 975                 pos = strstr(custom, "addr=");
 976                 if (pos == NULL) {
 977                         wpa_printf(MSG_DEBUG,
 978                                    "MLME-MICHAELMICFAILURE.indication "
 979                                    "without sender address ignored");
 980                         return;
 981                 }
 982                 pos += 5;
 983                 if (hwaddr_aton(pos, addr) == 0) {
 984                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
 985                 } else {
 986                         wpa_printf(MSG_DEBUG,
 987                                    "MLME-MICHAELMICFAILURE.indication "
 988                                    "with invalid MAC address");
 989                 }
 990         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 991                 char *key, *value;
 992                 u32 val;
 993                 key = custom;
 994                 while ((key = strchr(key, '\n')) != NULL) {
 995                         key++;
 996                         value = strchr(key, '=');
 997                         if (value == NULL)
 998                                 continue;
 999                         *value++ = '\0';
1000                         val = strtoul(value, NULL, 10);
1001                         if (strcmp(key, "mac") == 0)
1002                                 hwaddr_aton(value, drv->acct_mac);
1003                         else if (strcmp(key, "rx_packets") == 0)
1004                                 drv->acct_data.rx_packets = val;
1005                         else if (strcmp(key, "tx_packets") == 0)
1006                                 drv->acct_data.tx_packets = val;
1007                         else if (strcmp(key, "rx_bytes") == 0)
1008                                 drv->acct_data.rx_bytes = val;
1009                         else if (strcmp(key, "tx_bytes") == 0)
1010                                 drv->acct_data.tx_bytes = val;
1011                         key = value;
1012                 }
1013         }
1014 }
1015
1016 static void
1017 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
1018                                             char *data, int len)
1019 {
1020         struct iw_event iwe_buf, *iwe = &iwe_buf;
1021         char *pos, *end, *custom, *buf;
1022
1023         pos = data;
1024         end = data + len;
1025
1026         while (pos + IW_EV_LCP_LEN <= end) {
1027                 /* Event data may be unaligned, so make a local, aligned copy
1028                  * before processing. */
1029                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1030                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
1031                            iwe->cmd, iwe->len);
1032                 if (iwe->len <= IW_EV_LCP_LEN)
1033                         return;
1034
1035                 custom = pos + IW_EV_POINT_LEN;
1036                 if (drv->we_version > 18 &&
1037                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
1038                      iwe->cmd == IWEVCUSTOM)) {
1039                         /* WE-19 removed the pointer from struct iw_point */
1040                         char *dpos = (char *) &iwe_buf.u.data.length;
1041                         int dlen = dpos - (char *) &iwe_buf;
1042                         memcpy(dpos, pos + IW_EV_LCP_LEN,
1043                                sizeof(struct iw_event) - dlen);
1044                 } else {
1045                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1046                         custom += IW_EV_POINT_OFF;
1047                 }
1048
1049                 switch (iwe->cmd) {
1050                 case IWEVEXPIRED:
1051                         madwifi_del_sta(drv, (u8 *) iwe->u.addr.sa_data);
1052                         break;
1053                 case IWEVREGISTERED:
1054                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
1055                         break;
1056                 case IWEVCUSTOM:
1057                         if (custom + iwe->u.data.length > end)
1058                                 return;
1059                         buf = malloc(iwe->u.data.length + 1);
1060                         if (buf == NULL)
1061                                 return;         /* XXX */
1062                         memcpy(buf, custom, iwe->u.data.length);
1063                         buf[iwe->u.data.length] = '\0';
1064                         madwifi_wireless_event_wireless_custom(drv, buf);
1065                         free(buf);
1066                         break;
1067                 }
1068
1069                 pos += iwe->len;
1070         }
1071 }
1072
1073
1074 static void
1075 madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
1076                                                struct nlmsghdr *h, int len)
1077 {
1078         struct ifinfomsg *ifi;
1079         int attrlen, nlmsg_len, rta_len;
1080         struct rtattr * attr;
1081
1082         if (len < (int) sizeof(*ifi))
1083                 return;
1084
1085         ifi = NLMSG_DATA(h);
1086
1087         if (ifi->ifi_index != drv->ifindex)
1088                 return;
1089
1090         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
1091
1092         attrlen = h->nlmsg_len - nlmsg_len;
1093         if (attrlen < 0)
1094                 return;
1095
1096         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
1097
1098         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1099         while (RTA_OK(attr, attrlen)) {
1100                 if (attr->rta_type == IFLA_WIRELESS) {
1101                         madwifi_wireless_event_wireless(
1102                                 drv, ((char *) attr) + rta_len,
1103                                 attr->rta_len - rta_len);
1104                 }
1105                 attr = RTA_NEXT(attr, attrlen);
1106         }
1107 }
1108
1109
1110 static void
1111 madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
1112 {
1113         char buf[256];
1114         int left;
1115         struct sockaddr_nl from;
1116         socklen_t fromlen;
1117         struct nlmsghdr *h;
1118         struct madwifi_driver_data *drv = eloop_ctx;
1119
1120         fromlen = sizeof(from);
1121         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
1122                         (struct sockaddr *) &from, &fromlen);
1123         if (left < 0) {
1124                 if (errno != EINTR && errno != EAGAIN)
1125                         perror("recvfrom(netlink)");
1126                 return;
1127         }
1128
1129         h = (struct nlmsghdr *) buf;
1130         while (left >= (int) sizeof(*h)) {
1131                 int len, plen;
1132
1133                 len = h->nlmsg_len;
1134                 plen = len - sizeof(*h);
1135                 if (len > left || plen < 0) {
1136                         printf("Malformed netlink message: "
1137                                "len=%d left=%d plen=%d\n",
1138                                len, left, plen);
1139                         break;
1140                 }
1141
1142                 switch (h->nlmsg_type) {
1143                 case RTM_NEWLINK:
1144                         madwifi_wireless_event_rtm_newlink(drv, h, plen);
1145                         break;
1146                 }
1147
1148                 len = NLMSG_ALIGN(len);
1149                 left -= len;
1150                 h = (struct nlmsghdr *) ((char *) h + len);
1151         }
1152
1153         if (left > 0) {
1154                 printf("%d extra bytes in the end of netlink message\n", left);
1155         }
1156 }
1157
1158
1159 static int
1160 madwifi_get_we_version(struct madwifi_driver_data *drv)
1161 {
1162         struct iw_range *range;
1163         struct iwreq iwr;
1164         int minlen;
1165         size_t buflen;
1166
1167         drv->we_version = 0;
1168
1169         /*
1170          * Use larger buffer than struct iw_range in order to allow the
1171          * structure to grow in the future.
1172          */
1173         buflen = sizeof(struct iw_range) + 500;
1174         range = os_zalloc(buflen);
1175         if (range == NULL)
1176                 return -1;
1177
1178         memset(&iwr, 0, sizeof(iwr));
1179         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1180         iwr.u.data.pointer = (caddr_t) range;
1181         iwr.u.data.length = buflen;
1182
1183         minlen = ((char *) &range->enc_capa) - (char *) range +
1184                 sizeof(range->enc_capa);
1185
1186         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1187                 perror("ioctl[SIOCGIWRANGE]");
1188                 free(range);
1189                 return -1;
1190         } else if (iwr.u.data.length >= minlen &&
1191                    range->we_version_compiled >= 18) {
1192                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1193                            "WE(source)=%d enc_capa=0x%x",
1194                            range->we_version_compiled,
1195                            range->we_version_source,
1196                            range->enc_capa);
1197                 drv->we_version = range->we_version_compiled;
1198         }
1199
1200         free(range);
1201         return 0;
1202 }
1203
1204
1205 static int
1206 madwifi_wireless_event_init(void *priv)
1207 {
1208         struct madwifi_driver_data *drv = priv;
1209         int s;
1210         struct sockaddr_nl local;
1211
1212         madwifi_get_we_version(drv);
1213
1214         drv->wext_sock = -1;
1215
1216         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1217         if (s < 0) {
1218                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1219                 return -1;
1220         }
1221
1222         memset(&local, 0, sizeof(local));
1223         local.nl_family = AF_NETLINK;
1224         local.nl_groups = RTMGRP_LINK;
1225         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1226                 perror("bind(netlink)");
1227                 close(s);
1228                 return -1;
1229         }
1230
1231         eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
1232         drv->wext_sock = s;
1233
1234         return 0;
1235 }
1236
1237
1238 static void
1239 madwifi_wireless_event_deinit(void *priv)
1240 {
1241         struct madwifi_driver_data *drv = priv;
1242
1243         if (drv != NULL) {
1244                 if (drv->wext_sock < 0)
1245                         return;
1246                 eloop_unregister_read_sock(drv->wext_sock);
1247                 close(drv->wext_sock);
1248         }
1249 }
1250
1251
1252 static int
1253 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1254                    int encrypt, const u8 *own_addr)
1255 {
1256         struct madwifi_driver_data *drv = priv;
1257         unsigned char buf[3000];
1258         unsigned char *bp = buf;
1259         struct l2_ethhdr *eth;
1260         size_t len;
1261         int status;
1262
1263         /*
1264          * Prepend the Ethernet header.  If the caller left us
1265          * space at the front we could just insert it but since
1266          * we don't know we copy to a local buffer.  Given the frequency
1267          * and size of frames this probably doesn't matter.
1268          */
1269         len = data_len + sizeof(struct l2_ethhdr);
1270         if (len > sizeof(buf)) {
1271                 bp = malloc(len);
1272                 if (bp == NULL) {
1273                         printf("EAPOL frame discarded, cannot malloc temp "
1274                                "buffer of size %lu!\n", (unsigned long) len);
1275                         return -1;
1276                 }
1277         }
1278         eth = (struct l2_ethhdr *) bp;
1279         memcpy(eth->h_dest, addr, ETH_ALEN);
1280         memcpy(eth->h_source, own_addr, ETH_ALEN);
1281         eth->h_proto = htons(ETH_P_EAPOL);
1282         memcpy(eth+1, data, data_len);
1283
1284         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1285
1286         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1287
1288         if (bp != buf)
1289                 free(bp);
1290         return status;
1291 }
1292
1293 static void
1294 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1295 {
1296         struct madwifi_driver_data *drv = ctx;
1297         struct hostapd_data *hapd = drv->hapd;
1298         struct sta_info *sta;
1299
1300         sta = ap_get_sta(hapd, src_addr);
1301         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1302                 printf("Data frame from not associated STA %s\n",
1303                        ether_sprintf(src_addr));
1304                 /* XXX cannot happen */
1305                 return;
1306         }
1307         ieee802_1x_receive(hapd, src_addr, buf + sizeof(struct l2_ethhdr),
1308                            len - sizeof(struct l2_ethhdr));
1309 }
1310
1311 static void *
1312 madwifi_init(struct hostapd_data *hapd)
1313 {
1314         struct madwifi_driver_data *drv;
1315         struct ifreq ifr;
1316         struct iwreq iwr;
1317
1318         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1319         if (drv == NULL) {
1320                 printf("Could not allocate memory for madwifi driver data\n");
1321                 return NULL;
1322         }
1323
1324         drv->hapd = hapd;
1325         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1326         if (drv->ioctl_sock < 0) {
1327                 perror("socket[PF_INET,SOCK_DGRAM]");
1328                 goto bad;
1329         }
1330         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
1331
1332         memset(&ifr, 0, sizeof(ifr));
1333         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1334         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1335                 perror("ioctl(SIOCGIFINDEX)");
1336                 goto bad;
1337         }
1338         drv->ifindex = ifr.ifr_ifindex;
1339
1340         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1341                                         handle_read, drv, 1);
1342         if (drv->sock_xmit == NULL)
1343                 goto bad;
1344         if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
1345                 goto bad;
1346         if (hapd->conf->bridge[0] != '\0') {
1347                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1348                            hapd->conf->bridge);
1349                 drv->sock_recv = l2_packet_init(hapd->conf->bridge, NULL,
1350                                                 ETH_P_EAPOL, handle_read, drv,
1351                                                 1);
1352                 if (drv->sock_recv == NULL)
1353                         goto bad;
1354         } else
1355                 drv->sock_recv = drv->sock_xmit;
1356
1357         memset(&iwr, 0, sizeof(iwr));
1358         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1359
1360         iwr.u.mode = IW_MODE_MASTER;
1361
1362         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1363                 perror("ioctl[SIOCSIWMODE]");
1364                 printf("Could not set interface to master mode!\n");
1365                 goto bad;
1366         }
1367
1368         madwifi_set_iface_flags(drv, 0);        /* mark down during setup */
1369         madwifi_set_privacy(drv->iface, drv, 0); /* default to no privacy */
1370
1371         madwifi_receive_probe_req(drv);
1372
1373         return drv;
1374 bad:
1375         if (drv->sock_xmit != NULL)
1376                 l2_packet_deinit(drv->sock_xmit);
1377         if (drv->ioctl_sock >= 0)
1378                 close(drv->ioctl_sock);
1379         if (drv != NULL)
1380                 free(drv);
1381         return NULL;
1382 }
1383
1384
1385 static void
1386 madwifi_deinit(void *priv)
1387 {
1388         struct madwifi_driver_data *drv = priv;
1389
1390         (void) madwifi_set_iface_flags(drv, 0);
1391         if (drv->ioctl_sock >= 0)
1392                 close(drv->ioctl_sock);
1393         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1394                 l2_packet_deinit(drv->sock_recv);
1395         if (drv->sock_xmit != NULL)
1396                 l2_packet_deinit(drv->sock_xmit);
1397         if (drv->sock_raw)
1398                 l2_packet_deinit(drv->sock_raw);
1399         free(drv);
1400 }
1401
1402 static int
1403 madwifi_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
1404 {
1405         struct madwifi_driver_data *drv = priv;
1406         struct iwreq iwr;
1407
1408         memset(&iwr, 0, sizeof(iwr));
1409         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1410         iwr.u.essid.flags = 1; /* SSID active */
1411         iwr.u.essid.pointer = (caddr_t) buf;
1412         iwr.u.essid.length = len + 1;
1413
1414         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1415                 perror("ioctl[SIOCSIWESSID]");
1416                 printf("len=%d\n", len);
1417                 return -1;
1418         }
1419         return 0;
1420 }
1421
1422 static int
1423 madwifi_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
1424 {
1425         struct madwifi_driver_data *drv = priv;
1426         struct iwreq iwr;
1427         int ret = 0;
1428
1429         memset(&iwr, 0, sizeof(iwr));
1430         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1431         iwr.u.essid.pointer = (caddr_t) buf;
1432         iwr.u.essid.length = len;
1433
1434         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1435                 perror("ioctl[SIOCGIWESSID]");
1436                 ret = -1;
1437         } else
1438                 ret = iwr.u.essid.length;
1439
1440         return ret;
1441 }
1442
1443 static int
1444 madwifi_set_countermeasures(void *priv, int enabled)
1445 {
1446         struct madwifi_driver_data *drv = priv;
1447         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1448         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1449 }
1450
1451 static int
1452 madwifi_commit(void *priv)
1453 {
1454         return madwifi_set_iface_flags(priv, 1);
1455 }
1456
1457 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1458         .name                   = "madwifi",
1459         .init                   = madwifi_init,
1460         .deinit                 = madwifi_deinit,
1461         .set_ieee8021x          = madwifi_set_ieee8021x,
1462         .set_privacy            = madwifi_set_privacy,
1463         .set_encryption         = madwifi_set_key,
1464         .get_seqnum             = madwifi_get_seqnum,
1465         .flush                  = madwifi_flush,
1466         .set_generic_elem       = madwifi_set_opt_ie,
1467         .wireless_event_init    = madwifi_wireless_event_init,
1468         .wireless_event_deinit  = madwifi_wireless_event_deinit,
1469         .sta_set_flags          = madwifi_sta_set_flags,
1470         .read_sta_data          = madwifi_read_sta_driver_data,
1471         .send_eapol             = madwifi_send_eapol,
1472         .sta_disassoc           = madwifi_sta_disassoc,
1473         .sta_deauth             = madwifi_sta_deauth,
1474         .set_ssid               = madwifi_set_ssid,
1475         .get_ssid               = madwifi_get_ssid,
1476         .set_countermeasures    = madwifi_set_countermeasures,
1477         .sta_clear_stats        = madwifi_sta_clear_stats,
1478         .commit                 = madwifi_commit,
1479         .set_wps_beacon_ie      = madwifi_set_wps_beacon_ie,
1480         .set_wps_probe_resp_ie  = madwifi_set_wps_probe_resp_ie,
1481 };