src/drivers/driver_madwifi.c

   1 /*
   2  * WPA Supplicant - 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) 2004-2007, 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 <sys/ioctl.h>
  19
  20 #include "common.h"
  21 #include "driver.h"
  22 #include "driver_wext.h"
  23 #include "eloop.h"
  24 #include "ieee802_11_defs.h"
  25 #include "wireless_copy.h"
  26
  27 /*
  28  * Avoid conflicts with wpa_supplicant definitions by undefining a definition.
  29  */
  30 #undef WME_OUI_TYPE
  31
  32 #include <include/compat.h>
  33 #include <net80211/ieee80211.h>
  34 #ifdef WME_NUM_AC
  35 /* Assume this is built against BSD branch of madwifi driver. */
  36 #define MADWIFI_BSD
  37 #include <net80211/_ieee80211.h>
  38 #endif /* WME_NUM_AC */
  39 #include <net80211/ieee80211_crypto.h>
  40 #include <net80211/ieee80211_ioctl.h>
  41
  42 #ifdef CONFIG_WPS
  43 #ifdef IEEE80211_IOCTL_FILTERFRAME
  44 #include <netpacket/packet.h>
  45
  46 #ifndef ETH_P_80211_RAW
  47 #define ETH_P_80211_RAW 0x0019
  48 #endif
  49 #endif /* IEEE80211_IOCTL_FILTERFRAME */
  50 #endif /* CONFIG_WPS */
  51
  52 /*
  53  * Avoid conflicts with hostapd definitions by undefining couple of defines
  54  * from madwifi header files.
  55  */
  56 #undef RSN_VERSION
  57 #undef WPA_VERSION
  58 #undef WPA_OUI_TYPE
  59 #undef WME_OUI_TYPE
  60
  61
  62 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
  63 /* Assume this is built against madwifi-ng */
  64 #define MADWIFI_NG
  65 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
  66
  67
  68 #ifdef HOSTAPD
  69
  70 #include "priv_netlink.h"
  71 #include "l2_packet/l2_packet.h"
  72 #include "../../hostapd/hostapd.h"
  73 #include "../../hostapd/config.h"
  74 #include "../../hostapd/wps_hostapd.h"
  75 #include "../../hostapd/sta_flags.h"
  76
  77
  78 struct madwifi_driver_data {
  79         struct hostapd_data *hapd;              /* back pointer */
  80
  81         char    iface[IFNAMSIZ + 1];
  82         int     ifindex;
  83         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  84         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  85         int     ioctl_sock;                     /* socket for ioctl() use */
  86         int     wext_sock;                      /* socket for wireless events */
  87         int     we_version;
  88         u8      acct_mac[ETH_ALEN];
  89         struct hostap_sta_driver_data acct_data;
  90
  91         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  92 };
  93
  94 static int madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
  95                               int reason_code);
  96
  97 static int
  98 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
  99 {
 100         struct iwreq iwr;
 101         int do_inline = len < IFNAMSIZ;
 102
 103         memset(&iwr, 0, sizeof(iwr));
 104         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 105 #ifdef IEEE80211_IOCTL_FILTERFRAME
 106         /* FILTERFRAME must be NOT inline, regardless of size. */
 107         if (op == IEEE80211_IOCTL_FILTERFRAME)
 108                 do_inline = 0;
 109 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 110         if (op == IEEE80211_IOCTL_SET_APPIEBUF)
 111                 do_inline = 0;
 112         if (do_inline) {
 113                 /*
 114                  * Argument data fits inline; put it there.
 115                  */
 116                 memcpy(iwr.u.name, data, len);
 117         } else {
 118                 /*
 119                  * Argument data too big for inline transfer; setup a
 120                  * parameter block instead; the kernel will transfer
 121                  * the data for the driver.
 122                  */
 123                 iwr.u.data.pointer = data;
 124                 iwr.u.data.length = len;
 125         }
 126
 127         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 128 #ifdef MADWIFI_NG
 129                 int first = IEEE80211_IOCTL_SETPARAM;
 130                 static const char *opnames[] = {
 131                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 132                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 133                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 134                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 135                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 136                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 137                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 138                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 139                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 140                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 141                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 142                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 143                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 144                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 145                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 146                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 147                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 148                         NULL,
 149                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 150                         NULL,
 151                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 152                         NULL,
 153                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 154                         NULL,
 155                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 156                         NULL,
 157                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 158                         NULL,
 159                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 160                         NULL,
 161                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 162                 };
 163 #else /* MADWIFI_NG */
 164                 int first = IEEE80211_IOCTL_SETPARAM;
 165                 static const char *opnames[] = {
 166                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 167                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 168                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 169                         "ioctl[SIOCIWFIRSTPRIV+3]",
 170                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 171                         "ioctl[SIOCIWFIRSTPRIV+5]",
 172                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 173                         "ioctl[SIOCIWFIRSTPRIV+7]",
 174                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 175                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 176                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 177                         "ioctl[SIOCIWFIRSTPRIV+11]",
 178                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 179                         "ioctl[SIOCIWFIRSTPRIV+13]",
 180                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 181                         "ioctl[SIOCIWFIRSTPRIV+15]",
 182                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 183                         "ioctl[SIOCIWFIRSTPRIV+17]",
 184                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 185                 };
 186 #endif /* MADWIFI_NG */
 187                 int idx = op - first;
 188                 if (first <= op &&
 189                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 190                     opnames[idx])
 191                         perror(opnames[idx]);
 192                 else
 193                         perror("ioctl[unknown???]");
 194                 return -1;
 195         }
 196         return 0;
 197 }
 198
 199 static int
 200 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 201 {
 202         struct iwreq iwr;
 203
 204         memset(&iwr, 0, sizeof(iwr));
 205         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 206         iwr.u.mode = op;
 207         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 208
 209         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 210                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 211                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 212                            "arg %d)", __func__, op, arg);
 213                 return -1;
 214         }
 215         return 0;
 216 }
 217
 218 #ifndef CONFIG_NO_STDOUT_DEBUG
 219 static const char *
 220 ether_sprintf(const u8 *addr)
 221 {
 222         static char buf[sizeof(MACSTR)];
 223
 224         if (addr != NULL)
 225                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 226         else
 227                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 228         return buf;
 229 }
 230 #endif /* CONFIG_NO_STDOUT_DEBUG */
 231
 232 /*
 233  * Configure WPA parameters.
 234  */
 235 static int
 236 madwifi_configure_wpa(struct madwifi_driver_data *drv)
 237 {
 238         struct hostapd_data *hapd = drv->hapd;
 239         struct hostapd_bss_config *conf = hapd->conf;
 240         int v;
 241
 242         switch (conf->wpa_group) {
 243         case WPA_CIPHER_CCMP:
 244                 v = IEEE80211_CIPHER_AES_CCM;
 245                 break;
 246         case WPA_CIPHER_TKIP:
 247                 v = IEEE80211_CIPHER_TKIP;
 248                 break;
 249         case WPA_CIPHER_WEP104:
 250                 v = IEEE80211_CIPHER_WEP;
 251                 break;
 252         case WPA_CIPHER_WEP40:
 253                 v = IEEE80211_CIPHER_WEP;
 254                 break;
 255         case WPA_CIPHER_NONE:
 256                 v = IEEE80211_CIPHER_NONE;
 257                 break;
 258         default:
 259                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 260                            conf->wpa_group);
 261                 return -1;
 262         }
 263         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 264         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 265                 printf("Unable to set group key cipher to %u\n", v);
 266                 return -1;
 267         }
 268         if (v == IEEE80211_CIPHER_WEP) {
 269                 /* key length is done only for specific ciphers */
 270                 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 271                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 272                         printf("Unable to set group key length to %u\n", v);
 273                         return -1;
 274                 }
 275         }
 276
 277         v = 0;
 278         if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 279                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 280         if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 281                 v |= 1<<IEEE80211_CIPHER_TKIP;
 282         if (conf->wpa_pairwise & WPA_CIPHER_NONE)
 283                 v |= 1<<IEEE80211_CIPHER_NONE;
 284         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 285         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 286                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 287                 return -1;
 288         }
 289
 290         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 291                    __func__, conf->wpa_key_mgmt);
 292         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
 293                 printf("Unable to set key management algorithms to 0x%x\n",
 294                         conf->wpa_key_mgmt);
 295                 return -1;
 296         }
 297
 298         v = 0;
 299         if (conf->rsn_preauth)
 300                 v |= BIT(0);
 301         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 302                    __func__, conf->rsn_preauth);
 303         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 304                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 305                 return -1;
 306         }
 307
 308         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, conf->wpa);
 309         if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
 310                 printf("Unable to set WPA to %u\n", conf->wpa);
 311                 return -1;
 312         }
 313         return 0;
 314 }
 315
 316
 317 static int
 318 madwifi_set_iface_flags(void *priv, int dev_up)
 319 {
 320         struct madwifi_driver_data *drv = priv;
 321         struct ifreq ifr;
 322
 323         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 324
 325         if (drv->ioctl_sock < 0)
 326                 return -1;
 327
 328         memset(&ifr, 0, sizeof(ifr));
 329         os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 330
 331         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 332                 perror("ioctl[SIOCGIFFLAGS]");
 333                 return -1;
 334         }
 335
 336         if (dev_up)
 337                 ifr.ifr_flags |= IFF_UP;
 338         else
 339                 ifr.ifr_flags &= ~IFF_UP;
 340
 341         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 342                 perror("ioctl[SIOCSIFFLAGS]");
 343                 return -1;
 344         }
 345
 346         if (dev_up) {
 347                 memset(&ifr, 0, sizeof(ifr));
 348                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 349                 ifr.ifr_mtu = HOSTAPD_MTU;
 350                 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
 351                         perror("ioctl[SIOCSIFMTU]");
 352                         printf("Setting MTU failed - trying to survive with "
 353                                "current value\n");
 354                 }
 355         }
 356
 357         return 0;
 358 }
 359
 360 static int
 361 madwifi_set_ieee8021x(const char *ifname, void *priv, int enabled)
 362 {
 363         struct madwifi_driver_data *drv = priv;
 364         struct hostapd_data *hapd = drv->hapd;
 365         struct hostapd_bss_config *conf = hapd->conf;
 366
 367         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 368
 369         if (!enabled) {
 370                 /* XXX restore state */
 371                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 372                         IEEE80211_AUTH_AUTO);
 373         }
 374         if (!conf->wpa && !conf->ieee802_1x) {
 375                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 376                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 377                 return -1;
 378         }
 379         if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
 380                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 381                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 382                 return -1;
 383         }
 384         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 385                 (conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 386                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 387                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 388                 return -1;
 389         }
 390
 391         return 0;
 392 }
 393
 394 static int
 395 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
 396 {
 397         struct madwifi_driver_data *drv = priv;
 398
 399         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 400
 401         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 402 }
 403
 404 static int
 405 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 406 {
 407         struct madwifi_driver_data *drv = priv;
 408         struct ieee80211req_mlme mlme;
 409         int ret;
 410
 411         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 412                    __func__, ether_sprintf(addr), authorized);
 413
 414         if (authorized)
 415                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 416         else
 417                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 418         mlme.im_reason = 0;
 419         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 420         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 421         if (ret < 0) {
 422                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 423                            __func__, authorized ? "" : "un", MAC2STR(addr));
 424         }
 425
 426         return ret;
 427 }
 428
 429 static int
 430 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 431                       int flags_or, int flags_and)
 432 {
 433         /* For now, only support setting Authorized flag */
 434         if (flags_or & WLAN_STA_AUTHORIZED)
 435                 return madwifi_set_sta_authorized(priv, addr, 1);
 436         if (!(flags_and & WLAN_STA_AUTHORIZED))
 437                 return madwifi_set_sta_authorized(priv, addr, 0);
 438         return 0;
 439 }
 440
 441 static int
 442 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 443 {
 444         struct madwifi_driver_data *drv = priv;
 445         struct ieee80211req_del_key wk;
 446         int ret;
 447
 448         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 449                    __func__, ether_sprintf(addr), key_idx);
 450
 451         memset(&wk, 0, sizeof(wk));
 452         if (addr != NULL) {
 453                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 454                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 455         } else {
 456                 wk.idk_keyix = key_idx;
 457         }
 458
 459         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 460         if (ret < 0) {
 461                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 462                            " key_idx %d)", __func__, ether_sprintf(addr),
 463                            key_idx);
 464         }
 465
 466         return ret;
 467 }
 468
 469 static int
 470 madwifi_set_key(const char *ifname, void *priv, wpa_alg alg,
 471                 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
 472                 size_t seq_len, const u8 *key, size_t key_len)
 473 {
 474         struct madwifi_driver_data *drv = priv;
 475         struct ieee80211req_key wk;
 476         u_int8_t cipher;
 477         int ret;
 478
 479         if (alg == WPA_ALG_NONE)
 480                 return madwifi_del_key(drv, addr, key_idx);
 481
 482         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 483                    __func__, alg, ether_sprintf(addr), key_idx);
 484
 485         if (alg == WPA_ALG_WEP)
 486                 cipher = IEEE80211_CIPHER_WEP;
 487         else if (alg == WPA_ALG_TKIP)
 488                 cipher = IEEE80211_CIPHER_TKIP;
 489         else if (alg == WPA_ALG_CCMP)
 490                 cipher = IEEE80211_CIPHER_AES_CCM;
 491         else {
 492                 printf("%s: unknown/unsupported algorithm %d\n",
 493                         __func__, alg);
 494                 return -1;
 495         }
 496
 497         if (key_len > sizeof(wk.ik_keydata)) {
 498                 printf("%s: key length %lu too big\n", __func__,
 499                        (unsigned long) key_len);
 500                 return -3;
 501         }
 502
 503         memset(&wk, 0, sizeof(wk));
 504         wk.ik_type = cipher;
 505         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 506         if (addr == NULL) {
 507                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 508                 wk.ik_keyix = key_idx;
 509                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 510         } else {
 511                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 512                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 513         }
 514         wk.ik_keylen = key_len;
 515         memcpy(wk.ik_keydata, key, key_len);
 516
 517         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 518         if (ret < 0) {
 519                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 520                            " key_idx %d alg %d key_len %lu set_tx %d)",
 521                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 522                            alg, (unsigned long) key_len, set_tx);
 523         }
 524
 525         return ret;
 526 }
 527
 528
 529 static int
 530 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 531                    u8 *seq)
 532 {
 533         struct madwifi_driver_data *drv = priv;
 534         struct ieee80211req_key wk;
 535
 536         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 537                    __func__, ether_sprintf(addr), idx);
 538
 539         memset(&wk, 0, sizeof(wk));
 540         if (addr == NULL)
 541                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 542         else
 543                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 544         wk.ik_keyix = idx;
 545
 546         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 547                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 548                            "(addr " MACSTR " key_idx %d)",
 549                            __func__, MAC2STR(wk.ik_macaddr), idx);
 550                 return -1;
 551         }
 552
 553 #ifdef WORDS_BIGENDIAN
 554         {
 555                 /*
 556                  * wk.ik_keytsc is in host byte order (big endian), need to
 557                  * swap it to match with the byte order used in WPA.
 558                  */
 559                 int i;
 560                 u8 tmp[WPA_KEY_RSC_LEN];
 561                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 562                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 563                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 564                 }
 565         }
 566 #else /* WORDS_BIGENDIAN */
 567         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 568 #endif /* WORDS_BIGENDIAN */
 569         return 0;
 570 }
 571
 572
 573 static int
 574 madwifi_flush(void *priv)
 575 {
 576 #ifdef MADWIFI_BSD
 577         u8 allsta[IEEE80211_ADDR_LEN];
 578         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 579         return madwifi_sta_deauth(priv, NULL, allsta,
 580                                   IEEE80211_REASON_AUTH_LEAVE);
 581 #else /* MADWIFI_BSD */
 582         return 0;               /* XXX */
 583 #endif /* MADWIFI_BSD */
 584 }
 585
 586
 587 static int
 588 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 589                              const u8 *addr)
 590 {
 591         struct madwifi_driver_data *drv = priv;
 592
 593 #ifdef MADWIFI_BSD
 594         struct ieee80211req_sta_stats stats;
 595
 596         memset(data, 0, sizeof(*data));
 597
 598         /*
 599          * Fetch statistics for station from the system.
 600          */
 601         memset(&stats, 0, sizeof(stats));
 602         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 603         if (set80211priv(drv,
 604 #ifdef MADWIFI_NG
 605                          IEEE80211_IOCTL_STA_STATS,
 606 #else /* MADWIFI_NG */
 607                          IEEE80211_IOCTL_GETSTASTATS,
 608 #endif /* MADWIFI_NG */
 609                          &stats, sizeof(stats))) {
 610                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 611                            MACSTR ")", __func__, MAC2STR(addr));
 612                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 613                         memcpy(data, &drv->acct_data, sizeof(*data));
 614                         return 0;
 615                 }
 616
 617                 printf("Failed to get station stats information element.\n");
 618                 return -1;
 619         }
 620
 621         data->rx_packets = stats.is_stats.ns_rx_data;
 622         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 623         data->tx_packets = stats.is_stats.ns_tx_data;
 624         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 625         return 0;
 626
 627 #else /* MADWIFI_BSD */
 628
 629         char buf[1024], line[128], *pos;
 630         FILE *f;
 631         unsigned long val;
 632
 633         memset(data, 0, sizeof(*data));
 634         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 635                  drv->iface, MAC2STR(addr));
 636
 637         f = fopen(buf, "r");
 638         if (!f) {
 639                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 640                         return -1;
 641                 memcpy(data, &drv->acct_data, sizeof(*data));
 642                 return 0;
 643         }
 644         /* Need to read proc file with in one piece, so use large enough
 645          * buffer. */
 646         setbuffer(f, buf, sizeof(buf));
 647
 648         while (fgets(line, sizeof(line), f)) {
 649                 pos = strchr(line, '=');
 650                 if (!pos)
 651                         continue;
 652                 *pos++ = '\0';
 653                 val = strtoul(pos, NULL, 10);
 654                 if (strcmp(line, "rx_packets") == 0)
 655                         data->rx_packets = val;
 656                 else if (strcmp(line, "tx_packets") == 0)
 657                         data->tx_packets = val;
 658                 else if (strcmp(line, "rx_bytes") == 0)
 659                         data->rx_bytes = val;
 660                 else if (strcmp(line, "tx_bytes") == 0)
 661                         data->tx_bytes = val;
 662         }
 663
 664         fclose(f);
 665
 666         return 0;
 667 #endif /* MADWIFI_BSD */
 668 }
 669
 670
 671 static int
 672 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 673 {
 674 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 675         struct madwifi_driver_data *drv = priv;
 676         struct ieee80211req_mlme mlme;
 677         int ret;
 678
 679         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 680
 681         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 682         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 683         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 684                            sizeof(mlme));
 685         if (ret < 0) {
 686                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 687                            MACSTR ")", __func__, MAC2STR(addr));
 688         }
 689
 690         return ret;
 691 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 692         return 0; /* FIX */
 693 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 694 }
 695
 696
 697 static int
 698 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 699 {
 700         /*
 701          * Do nothing; we setup parameters at startup that define the
 702          * contents of the beacon information element.
 703          */
 704         return 0;
 705 }
 706
 707 static int
 708 madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 709                    int reason_code)
 710 {
 711         struct madwifi_driver_data *drv = priv;
 712         struct ieee80211req_mlme mlme;
 713         int ret;
 714
 715         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 716                    __func__, ether_sprintf(addr), reason_code);
 717
 718         mlme.im_op = IEEE80211_MLME_DEAUTH;
 719         mlme.im_reason = reason_code;
 720         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 721         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 722         if (ret < 0) {
 723                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 724                            " reason %d)",
 725                            __func__, MAC2STR(addr), reason_code);
 726         }
 727
 728         return ret;
 729 }
 730
 731 static int
 732 madwifi_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 733                      int reason_code)
 734 {
 735         struct madwifi_driver_data *drv = priv;
 736         struct ieee80211req_mlme mlme;
 737         int ret;
 738
 739         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 740                    __func__, ether_sprintf(addr), reason_code);
 741
 742         mlme.im_op = IEEE80211_MLME_DISASSOC;
 743         mlme.im_reason = reason_code;
 744         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 745         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 746         if (ret < 0) {
 747                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 748                            MACSTR " reason %d)",
 749                            __func__, MAC2STR(addr), reason_code);
 750         }
 751
 752         return ret;
 753 }
 754
 755 #ifdef CONFIG_WPS
 756 #ifdef IEEE80211_IOCTL_FILTERFRAME
 757 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 758                                 size_t len)
 759 {
 760         struct madwifi_driver_data *drv = ctx;
 761         const struct ieee80211_mgmt *mgmt;
 762         const u8 *end, *ie;
 763         u16 fc;
 764         size_t ie_len;
 765
 766         /* Send Probe Request information to WPS processing */
 767
 768         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 769                 return;
 770         mgmt = (const struct ieee80211_mgmt *) buf;
 771
 772         fc = le_to_host16(mgmt->frame_control);
 773         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 774             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 775                 return;
 776
 777         end = buf + len;
 778         ie = mgmt->u.probe_req.variable;
 779         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 780
 781         hostapd_wps_probe_req_rx(drv->hapd, mgmt->sa, ie, ie_len);
 782 }
 783 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 784 #endif /* CONFIG_WPS */
 785
 786 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 787 {
 788         int ret = 0;
 789 #ifdef CONFIG_WPS
 790 #ifdef IEEE80211_IOCTL_FILTERFRAME
 791         struct ieee80211req_set_filter filt;
 792
 793         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 794         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 795
 796         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 797                            sizeof(struct ieee80211req_set_filter));
 798         if (ret)
 799                 return ret;
 800
 801         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 802                                        madwifi_raw_receive, drv, 1);
 803         if (drv->sock_raw == NULL)
 804                 return -1;
 805 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 806 #endif /* CONFIG_WPS */
 807         return ret;
 808 }
 809
 810 #ifdef CONFIG_WPS
 811 static int
 812 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 813 {
 814         struct madwifi_driver_data *drv = priv;
 815         u8 buf[256];
 816         struct ieee80211req_getset_appiebuf *beac_ie;
 817
 818         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 819                    (unsigned long) len);
 820
 821         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 822         beac_ie->app_frmtype = frametype;
 823         beac_ie->app_buflen = len;
 824         memcpy(&(beac_ie->app_buf[0]), ie, len);
 825
 826         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 827                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 828 }
 829
 830 static int
 831 madwifi_set_wps_beacon_ie(const char *ifname, void *priv, const u8 *ie,
 832                           size_t len)
 833 {
 834         return madwifi_set_wps_ie(priv, ie, len, IEEE80211_APPIE_FRAME_BEACON);
 835 }
 836
 837 static int
 838 madwifi_set_wps_probe_resp_ie(const char *ifname, void *priv, const u8 *ie,
 839                               size_t len)
 840 {
 841         return madwifi_set_wps_ie(priv, ie, len,
 842                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 843 }
 844 #else /* CONFIG_WPS */
 845 #define madwifi_set_wps_beacon_ie NULL
 846 #define madwifi_set_wps_probe_resp_ie NULL
 847 #endif /* CONFIG_WPS */
 848
 849 static int
 850 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 851 {
 852         struct hostapd_data *hapd = drv->hapd;
 853         struct ieee80211req_wpaie ie;
 854         int ielen = 0, res;
 855         u8 *iebuf = NULL;
 856
 857         /*
 858          * Fetch negotiated WPA/RSN parameters from the system.
 859          */
 860         memset(&ie, 0, sizeof(ie));
 861         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 862         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 863                 wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE",
 864                            __func__);
 865                 goto no_ie;
 866         }
 867         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 868                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 869         iebuf = ie.wpa_ie;
 870         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 871          * Assume the IE was not included if the IE type is unknown. */
 872         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 873                 iebuf[1] = 0;
 874 #ifdef MADWIFI_NG
 875         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 876                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 877         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 878                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 879                  * set. This is needed for WPA2. */
 880                 iebuf = ie.rsn_ie;
 881                 if (iebuf[0] != WLAN_EID_RSN)
 882                         iebuf[1] = 0;
 883         }
 884 #endif /* MADWIFI_NG */
 885
 886         ielen = iebuf[1];
 887         if (ielen == 0)
 888                 iebuf = NULL;
 889         else
 890                 ielen += 2;
 891
 892 no_ie:
 893         res = hostapd_notif_assoc(hapd, addr, iebuf, ielen);
 894
 895         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 896                 /* Cached accounting data is not valid anymore. */
 897                 memset(drv->acct_mac, 0, ETH_ALEN);
 898                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 899         }
 900
 901         return res;
 902 }
 903
 904 static void
 905 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 906                                        char *custom)
 907 {
 908         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 909
 910         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 911                 char *pos;
 912                 u8 addr[ETH_ALEN];
 913                 pos = strstr(custom, "addr=");
 914                 if (pos == NULL) {
 915                         wpa_printf(MSG_DEBUG,
 916                                    "MLME-MICHAELMICFAILURE.indication "
 917                                    "without sender address ignored");
 918                         return;
 919                 }
 920                 pos += 5;
 921                 if (hwaddr_aton(pos, addr) == 0) {
 922                         hostapd_michael_mic_failure(drv->hapd, addr);
 923                 } else {
 924                         wpa_printf(MSG_DEBUG,
 925                                    "MLME-MICHAELMICFAILURE.indication "
 926                                    "with invalid MAC address");
 927                 }
 928         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 929                 char *key, *value;
 930                 u32 val;
 931                 key = custom;
 932                 while ((key = strchr(key, '\n')) != NULL) {
 933                         key++;
 934                         value = strchr(key, '=');
 935                         if (value == NULL)
 936                                 continue;
 937                         *value++ = '\0';
 938                         val = strtoul(value, NULL, 10);
 939                         if (strcmp(key, "mac") == 0)
 940                                 hwaddr_aton(value, drv->acct_mac);
 941                         else if (strcmp(key, "rx_packets") == 0)
 942                                 drv->acct_data.rx_packets = val;
 943                         else if (strcmp(key, "tx_packets") == 0)
 944                                 drv->acct_data.tx_packets = val;
 945                         else if (strcmp(key, "rx_bytes") == 0)
 946                                 drv->acct_data.rx_bytes = val;
 947                         else if (strcmp(key, "tx_bytes") == 0)
 948                                 drv->acct_data.tx_bytes = val;
 949                         key = value;
 950                 }
 951         }
 952 }
 953
 954 static void
 955 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
 956                                             char *data, int len)
 957 {
 958         struct iw_event iwe_buf, *iwe = &iwe_buf;
 959         char *pos, *end, *custom, *buf;
 960
 961         pos = data;
 962         end = data + len;
 963
 964         while (pos + IW_EV_LCP_LEN <= end) {
 965                 /* Event data may be unaligned, so make a local, aligned copy
 966                  * before processing. */
 967                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 968                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
 969                            iwe->cmd, iwe->len);
 970                 if (iwe->len <= IW_EV_LCP_LEN)
 971                         return;
 972
 973                 custom = pos + IW_EV_POINT_LEN;
 974                 if (drv->we_version > 18 &&
 975                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 976                      iwe->cmd == IWEVCUSTOM)) {
 977                         /* WE-19 removed the pointer from struct iw_point */
 978                         char *dpos = (char *) &iwe_buf.u.data.length;
 979                         int dlen = dpos - (char *) &iwe_buf;
 980                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 981                                sizeof(struct iw_event) - dlen);
 982                 } else {
 983                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 984                         custom += IW_EV_POINT_OFF;
 985                 }
 986
 987                 switch (iwe->cmd) {
 988                 case IWEVEXPIRED:
 989                         hostapd_notif_disassoc(drv->hapd,
 990                                                (u8 *) iwe->u.addr.sa_data);
 991                         break;
 992                 case IWEVREGISTERED:
 993                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
 994                         break;
 995                 case IWEVCUSTOM:
 996                         if (custom + iwe->u.data.length > end)
 997                                 return;
 998                         buf = malloc(iwe->u.data.length + 1);
 999                         if (buf == NULL)
1000                                 return;         /* XXX */
1001                         memcpy(buf, custom, iwe->u.data.length);
1002                         buf[iwe->u.data.length] = '\0';
1003                         madwifi_wireless_event_wireless_custom(drv, buf);
1004                         free(buf);
1005                         break;
1006                 }
1007
1008                 pos += iwe->len;
1009         }
1010 }
1011
1012
1013 static void
1014 madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
1015                                                struct nlmsghdr *h, int len)
1016 {
1017         struct ifinfomsg *ifi;
1018         int attrlen, nlmsg_len, rta_len;
1019         struct rtattr * attr;
1020
1021         if (len < (int) sizeof(*ifi))
1022                 return;
1023
1024         ifi = NLMSG_DATA(h);
1025
1026         if (ifi->ifi_index != drv->ifindex)
1027                 return;
1028
1029         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
1030
1031         attrlen = h->nlmsg_len - nlmsg_len;
1032         if (attrlen < 0)
1033                 return;
1034
1035         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
1036
1037         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1038         while (RTA_OK(attr, attrlen)) {
1039                 if (attr->rta_type == IFLA_WIRELESS) {
1040                         madwifi_wireless_event_wireless(
1041                                 drv, ((char *) attr) + rta_len,
1042                                 attr->rta_len - rta_len);
1043                 }
1044                 attr = RTA_NEXT(attr, attrlen);
1045         }
1046 }
1047
1048
1049 static void
1050 madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
1051 {
1052         char buf[256];
1053         int left;
1054         struct sockaddr_nl from;
1055         socklen_t fromlen;
1056         struct nlmsghdr *h;
1057         struct madwifi_driver_data *drv = eloop_ctx;
1058
1059         fromlen = sizeof(from);
1060         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
1061                         (struct sockaddr *) &from, &fromlen);
1062         if (left < 0) {
1063                 if (errno != EINTR && errno != EAGAIN)
1064                         perror("recvfrom(netlink)");
1065                 return;
1066         }
1067
1068         h = (struct nlmsghdr *) buf;
1069         while (left >= (int) sizeof(*h)) {
1070                 int len, plen;
1071
1072                 len = h->nlmsg_len;
1073                 plen = len - sizeof(*h);
1074                 if (len > left || plen < 0) {
1075                         printf("Malformed netlink message: "
1076                                "len=%d left=%d plen=%d\n",
1077                                len, left, plen);
1078                         break;
1079                 }
1080
1081                 switch (h->nlmsg_type) {
1082                 case RTM_NEWLINK:
1083                         madwifi_wireless_event_rtm_newlink(drv, h, plen);
1084                         break;
1085                 }
1086
1087                 len = NLMSG_ALIGN(len);
1088                 left -= len;
1089                 h = (struct nlmsghdr *) ((char *) h + len);
1090         }
1091
1092         if (left > 0) {
1093                 printf("%d extra bytes in the end of netlink message\n", left);
1094         }
1095 }
1096
1097
1098 static int
1099 madwifi_get_we_version(struct madwifi_driver_data *drv)
1100 {
1101         struct iw_range *range;
1102         struct iwreq iwr;
1103         int minlen;
1104         size_t buflen;
1105
1106         drv->we_version = 0;
1107
1108         /*
1109          * Use larger buffer than struct iw_range in order to allow the
1110          * structure to grow in the future.
1111          */
1112         buflen = sizeof(struct iw_range) + 500;
1113         range = os_zalloc(buflen);
1114         if (range == NULL)
1115                 return -1;
1116
1117         memset(&iwr, 0, sizeof(iwr));
1118         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1119         iwr.u.data.pointer = (caddr_t) range;
1120         iwr.u.data.length = buflen;
1121
1122         minlen = ((char *) &range->enc_capa) - (char *) range +
1123                 sizeof(range->enc_capa);
1124
1125         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1126                 perror("ioctl[SIOCGIWRANGE]");
1127                 free(range);
1128                 return -1;
1129         } else if (iwr.u.data.length >= minlen &&
1130                    range->we_version_compiled >= 18) {
1131                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1132                            "WE(source)=%d enc_capa=0x%x",
1133                            range->we_version_compiled,
1134                            range->we_version_source,
1135                            range->enc_capa);
1136                 drv->we_version = range->we_version_compiled;
1137         }
1138
1139         free(range);
1140         return 0;
1141 }
1142
1143
1144 static int
1145 madwifi_wireless_event_init(struct madwifi_driver_data *drv)
1146 {
1147         int s;
1148         struct sockaddr_nl local;
1149
1150         madwifi_get_we_version(drv);
1151
1152         drv->wext_sock = -1;
1153
1154         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1155         if (s < 0) {
1156                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1157                 return -1;
1158         }
1159
1160         memset(&local, 0, sizeof(local));
1161         local.nl_family = AF_NETLINK;
1162         local.nl_groups = RTMGRP_LINK;
1163         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1164                 perror("bind(netlink)");
1165                 close(s);
1166                 return -1;
1167         }
1168
1169         eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
1170         drv->wext_sock = s;
1171
1172         return 0;
1173 }
1174
1175
1176 static void
1177 madwifi_wireless_event_deinit(struct madwifi_driver_data *drv)
1178 {
1179         if (drv->wext_sock < 0)
1180                 return;
1181         eloop_unregister_read_sock(drv->wext_sock);
1182         close(drv->wext_sock);
1183 }
1184
1185
1186 static int
1187 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1188                    int encrypt, const u8 *own_addr)
1189 {
1190         struct madwifi_driver_data *drv = priv;
1191         unsigned char buf[3000];
1192         unsigned char *bp = buf;
1193         struct l2_ethhdr *eth;
1194         size_t len;
1195         int status;
1196
1197         /*
1198          * Prepend the Ethernet header.  If the caller left us
1199          * space at the front we could just insert it but since
1200          * we don't know we copy to a local buffer.  Given the frequency
1201          * and size of frames this probably doesn't matter.
1202          */
1203         len = data_len + sizeof(struct l2_ethhdr);
1204         if (len > sizeof(buf)) {
1205                 bp = malloc(len);
1206                 if (bp == NULL) {
1207                         printf("EAPOL frame discarded, cannot malloc temp "
1208                                "buffer of size %lu!\n", (unsigned long) len);
1209                         return -1;
1210                 }
1211         }
1212         eth = (struct l2_ethhdr *) bp;
1213         memcpy(eth->h_dest, addr, ETH_ALEN);
1214         memcpy(eth->h_source, own_addr, ETH_ALEN);
1215         eth->h_proto = host_to_be16(ETH_P_EAPOL);
1216         memcpy(eth+1, data, data_len);
1217
1218         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1219
1220         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1221
1222         if (bp != buf)
1223                 free(bp);
1224         return status;
1225 }
1226
1227 static void
1228 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1229 {
1230         struct madwifi_driver_data *drv = ctx;
1231         hostapd_eapol_receive(drv->hapd, src_addr,
1232                               buf + sizeof(struct l2_ethhdr),
1233                               len - sizeof(struct l2_ethhdr));
1234 }
1235
1236 static void *
1237 madwifi_init(struct hostapd_data *hapd, struct wpa_init_params *params)
1238 {
1239         struct madwifi_driver_data *drv;
1240         struct ifreq ifr;
1241         struct iwreq iwr;
1242
1243         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1244         if (drv == NULL) {
1245                 printf("Could not allocate memory for madwifi driver data\n");
1246                 return NULL;
1247         }
1248
1249         drv->hapd = hapd;
1250         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1251         if (drv->ioctl_sock < 0) {
1252                 perror("socket[PF_INET,SOCK_DGRAM]");
1253                 goto bad;
1254         }
1255         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
1256
1257         memset(&ifr, 0, sizeof(ifr));
1258         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1259         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1260                 perror("ioctl(SIOCGIFINDEX)");
1261                 goto bad;
1262         }
1263         drv->ifindex = ifr.ifr_ifindex;
1264
1265         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1266                                         handle_read, drv, 1);
1267         if (drv->sock_xmit == NULL)
1268                 goto bad;
1269         if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
1270                 goto bad;
1271         if (params->bridge[0]) {
1272                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1273                            params->bridge[0]);
1274                 drv->sock_recv = l2_packet_init(params->bridge[0], NULL,
1275                                                 ETH_P_EAPOL, handle_read, drv,
1276                                                 1);
1277                 if (drv->sock_recv == NULL)
1278                         goto bad;
1279         } else
1280                 drv->sock_recv = drv->sock_xmit;
1281
1282         memset(&iwr, 0, sizeof(iwr));
1283         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1284
1285         iwr.u.mode = IW_MODE_MASTER;
1286
1287         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1288                 perror("ioctl[SIOCSIWMODE]");
1289                 printf("Could not set interface to master mode!\n");
1290                 goto bad;
1291         }
1292
1293         madwifi_set_iface_flags(drv, 0);        /* mark down during setup */
1294         madwifi_set_privacy(drv->iface, drv, 0); /* default to no privacy */
1295
1296         madwifi_receive_probe_req(drv);
1297
1298         if (madwifi_wireless_event_init(drv))
1299                 goto bad;
1300
1301         return drv;
1302 bad:
1303         if (drv->sock_xmit != NULL)
1304                 l2_packet_deinit(drv->sock_xmit);
1305         if (drv->ioctl_sock >= 0)
1306                 close(drv->ioctl_sock);
1307         if (drv != NULL)
1308                 free(drv);
1309         return NULL;
1310 }
1311
1312
1313 static void
1314 madwifi_deinit(void *priv)
1315 {
1316         struct madwifi_driver_data *drv = priv;
1317
1318         madwifi_wireless_event_deinit(drv);
1319         (void) madwifi_set_iface_flags(drv, 0);
1320         if (drv->ioctl_sock >= 0)
1321                 close(drv->ioctl_sock);
1322         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1323                 l2_packet_deinit(drv->sock_recv);
1324         if (drv->sock_xmit != NULL)
1325                 l2_packet_deinit(drv->sock_xmit);
1326         if (drv->sock_raw)
1327                 l2_packet_deinit(drv->sock_raw);
1328         free(drv);
1329 }
1330
1331 static int
1332 madwifi_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
1333 {
1334         struct madwifi_driver_data *drv = priv;
1335         struct iwreq iwr;
1336
1337         memset(&iwr, 0, sizeof(iwr));
1338         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1339         iwr.u.essid.flags = 1; /* SSID active */
1340         iwr.u.essid.pointer = (caddr_t) buf;
1341         iwr.u.essid.length = len + 1;
1342
1343         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1344                 perror("ioctl[SIOCSIWESSID]");
1345                 printf("len=%d\n", len);
1346                 return -1;
1347         }
1348         return 0;
1349 }
1350
1351 static int
1352 madwifi_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
1353 {
1354         struct madwifi_driver_data *drv = priv;
1355         struct iwreq iwr;
1356         int ret = 0;
1357
1358         memset(&iwr, 0, sizeof(iwr));
1359         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1360         iwr.u.essid.pointer = (caddr_t) buf;
1361         iwr.u.essid.length = len;
1362
1363         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1364                 perror("ioctl[SIOCGIWESSID]");
1365                 ret = -1;
1366         } else
1367                 ret = iwr.u.essid.length;
1368
1369         return ret;
1370 }
1371
1372 static int
1373 madwifi_set_countermeasures(void *priv, int enabled)
1374 {
1375         struct madwifi_driver_data *drv = priv;
1376         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1377         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1378 }
1379
1380 static int
1381 madwifi_commit(void *priv)
1382 {
1383         return madwifi_set_iface_flags(priv, 1);
1384 }
1385
1386 #else /* HOSTAPD */
1387
1388 struct wpa_driver_madwifi_data {
1389         void *wext; /* private data for driver_wext */
1390         void *ctx;
1391         char ifname[IFNAMSIZ + 1];
1392         int sock;
1393 };
1394
1395 static int
1396 set80211priv(struct wpa_driver_madwifi_data *drv, int op, void *data, int len,
1397              int show_err)
1398 {
1399         struct iwreq iwr;
1400
1401         os_memset(&iwr, 0, sizeof(iwr));
1402         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1403         if (len < IFNAMSIZ &&
1404             op != IEEE80211_IOCTL_SET_APPIEBUF) {
1405                 /*
1406                  * Argument data fits inline; put it there.
1407                  */
1408                 os_memcpy(iwr.u.name, data, len);
1409         } else {
1410                 /*
1411                  * Argument data too big for inline transfer; setup a
1412                  * parameter block instead; the kernel will transfer
1413                  * the data for the driver.
1414                  */
1415                 iwr.u.data.pointer = data;
1416                 iwr.u.data.length = len;
1417         }
1418
1419         if (ioctl(drv->sock, op, &iwr) < 0) {
1420                 if (show_err) {
1421 #ifdef MADWIFI_NG
1422                         int first = IEEE80211_IOCTL_SETPARAM;
1423                         int last = IEEE80211_IOCTL_KICKMAC;
1424                         static const char *opnames[] = {
1425                                 "ioctl[IEEE80211_IOCTL_SETPARAM]",
1426                                 "ioctl[IEEE80211_IOCTL_GETPARAM]",
1427                                 "ioctl[IEEE80211_IOCTL_SETMODE]",
1428                                 "ioctl[IEEE80211_IOCTL_GETMODE]",
1429                                 "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
1430                                 "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
1431                                 "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
1432                                 "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
1433                                 "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
1434                                 NULL,
1435                                 "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
1436                                 "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
1437                                 NULL,
1438                                 "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
1439                                 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
1440                                 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
1441                                 "ioctl[IEEE80211_IOCTL_SETMLME]",
1442                                 NULL,
1443                                 "ioctl[IEEE80211_IOCTL_SETKEY]",
1444                                 NULL,
1445                                 "ioctl[IEEE80211_IOCTL_DELKEY]",
1446                                 NULL,
1447                                 "ioctl[IEEE80211_IOCTL_ADDMAC]",
1448                                 NULL,
1449                                 "ioctl[IEEE80211_IOCTL_DELMAC]",
1450                                 NULL,
1451                                 "ioctl[IEEE80211_IOCTL_WDSMAC]",
1452                                 NULL,
1453                                 "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
1454                                 NULL,
1455                                 "ioctl[IEEE80211_IOCTL_KICKMAC]",
1456                         };
1457 #else /* MADWIFI_NG */
1458                         int first = IEEE80211_IOCTL_SETPARAM;
1459                         int last = IEEE80211_IOCTL_CHANLIST;
1460                         static const char *opnames[] = {
1461                                 "ioctl[IEEE80211_IOCTL_SETPARAM]",
1462                                 "ioctl[IEEE80211_IOCTL_GETPARAM]",
1463                                 "ioctl[IEEE80211_IOCTL_SETKEY]",
1464                                 "ioctl[IEEE80211_IOCTL_GETKEY]",
1465                                 "ioctl[IEEE80211_IOCTL_DELKEY]",
1466                                 NULL,
1467                                 "ioctl[IEEE80211_IOCTL_SETMLME]",
1468                                 NULL,
1469                                 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
1470                                 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
1471                                 "ioctl[IEEE80211_IOCTL_ADDMAC]",
1472                                 NULL,
1473                                 "ioctl[IEEE80211_IOCTL_DELMAC]",
1474                                 NULL,
1475                                 "ioctl[IEEE80211_IOCTL_CHANLIST]",
1476                         };
1477 #endif /* MADWIFI_NG */
1478                         int idx = op - first;
1479                         if (first <= op && op <= last &&
1480                             idx < (int) (sizeof(opnames) / sizeof(opnames[0]))
1481                             && opnames[idx])
1482                                 perror(opnames[idx]);
1483                         else
1484                                 perror("ioctl[unknown???]");
1485                 }
1486                 return -1;
1487         }
1488         return 0;
1489 }
1490
1491 static int
1492 set80211param(struct wpa_driver_madwifi_data *drv, int op, int arg,
1493               int show_err)
1494 {
1495         struct iwreq iwr;
1496
1497         os_memset(&iwr, 0, sizeof(iwr));
1498         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1499         iwr.u.mode = op;
1500         os_memcpy(iwr.u.name+sizeof(u32), &arg, sizeof(arg));
1501
1502         if (ioctl(drv->sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
1503                 if (show_err)
1504                         perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
1505                 return -1;
1506         }
1507         return 0;
1508 }
1509
1510 static int
1511 wpa_driver_madwifi_set_wpa_ie(struct wpa_driver_madwifi_data *drv,
1512                               const u8 *wpa_ie, size_t wpa_ie_len)
1513 {
1514         struct iwreq iwr;
1515
1516         os_memset(&iwr, 0, sizeof(iwr));
1517         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1518         /* NB: SETOPTIE is not fixed-size so must not be inlined */
1519         iwr.u.data.pointer = (void *) wpa_ie;
1520         iwr.u.data.length = wpa_ie_len;
1521
1522         if (ioctl(drv->sock, IEEE80211_IOCTL_SETOPTIE, &iwr) < 0) {
1523                 perror("ioctl[IEEE80211_IOCTL_SETOPTIE]");
1524                 return -1;
1525         }
1526         return 0;
1527 }
1528
1529 static int
1530 wpa_driver_madwifi_del_key(struct wpa_driver_madwifi_data *drv, int key_idx,
1531                            const u8 *addr)
1532 {
1533         struct ieee80211req_del_key wk;
1534
1535         wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __FUNCTION__, key_idx);
1536         os_memset(&wk, 0, sizeof(wk));
1537         wk.idk_keyix = key_idx;
1538         if (addr != NULL)
1539                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1540
1541         return set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk), 1);
1542 }
1543
1544 static int
1545 wpa_driver_madwifi_set_key(void *priv, wpa_alg alg,
1546                            const u8 *addr, int key_idx, int set_tx,
1547                            const u8 *seq, size_t seq_len,
1548                            const u8 *key, size_t key_len)
1549 {
1550         struct wpa_driver_madwifi_data *drv = priv;
1551         struct ieee80211req_key wk;
1552         char *alg_name;
1553         u_int8_t cipher;
1554
1555         if (alg == WPA_ALG_NONE)
1556                 return wpa_driver_madwifi_del_key(drv, key_idx, addr);
1557
1558         switch (alg) {
1559         case WPA_ALG_WEP:
1560                 if (addr == NULL || os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
1561                                               ETH_ALEN) == 0) {
1562                         /*
1563                          * madwifi did not seem to like static WEP key
1564                          * configuration with IEEE80211_IOCTL_SETKEY, so use
1565                          * Linux wireless extensions ioctl for this.
1566                          */
1567                         return wpa_driver_wext_set_key(drv->wext, alg, addr,
1568                                                        key_idx, set_tx,
1569                                                        seq, seq_len,
1570                                                        key, key_len);
1571                 }
1572                 alg_name = "WEP";
1573                 cipher = IEEE80211_CIPHER_WEP;
1574                 break;
1575         case WPA_ALG_TKIP:
1576                 alg_name = "TKIP";
1577                 cipher = IEEE80211_CIPHER_TKIP;
1578                 break;
1579         case WPA_ALG_CCMP:
1580                 alg_name = "CCMP";
1581                 cipher = IEEE80211_CIPHER_AES_CCM;
1582                 break;
1583         default:
1584                 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1585                         __FUNCTION__, alg);
1586                 return -1;
1587         }
1588
1589         wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
1590                    "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
1591                    (unsigned long) seq_len, (unsigned long) key_len);
1592
1593         if (seq_len > sizeof(u_int64_t)) {
1594                 wpa_printf(MSG_DEBUG, "%s: seq_len %lu too big",
1595                            __FUNCTION__, (unsigned long) seq_len);
1596                 return -2;
1597         }
1598         if (key_len > sizeof(wk.ik_keydata)) {
1599                 wpa_printf(MSG_DEBUG, "%s: key length %lu too big",
1600                            __FUNCTION__, (unsigned long) key_len);
1601                 return -3;
1602         }
1603
1604         os_memset(&wk, 0, sizeof(wk));
1605         wk.ik_type = cipher;
1606         wk.ik_flags = IEEE80211_KEY_RECV;
1607         if (addr == NULL ||
1608             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1609                 wk.ik_flags |= IEEE80211_KEY_GROUP;
1610         if (set_tx) {
1611                 wk.ik_flags |= IEEE80211_KEY_XMIT | IEEE80211_KEY_DEFAULT;
1612                 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1613         } else
1614                 os_memset(wk.ik_macaddr, 0, IEEE80211_ADDR_LEN);
1615         wk.ik_keyix = key_idx;
1616         wk.ik_keylen = key_len;
1617 #ifdef WORDS_BIGENDIAN
1618 #define WPA_KEY_RSC_LEN 8
1619         {
1620                 size_t i;
1621                 u8 tmp[WPA_KEY_RSC_LEN];
1622                 os_memset(tmp, 0, sizeof(tmp));
1623                 for (i = 0; i < seq_len; i++)
1624                         tmp[WPA_KEY_RSC_LEN - i - 1] = seq[i];
1625                 os_memcpy(&wk.ik_keyrsc, tmp, WPA_KEY_RSC_LEN);
1626         }
1627 #else /* WORDS_BIGENDIAN */
1628         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1629 #endif /* WORDS_BIGENDIAN */
1630         os_memcpy(wk.ik_keydata, key, key_len);
1631
1632         return set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk), 1);
1633 }
1634
1635 static int
1636 wpa_driver_madwifi_set_countermeasures(void *priv, int enabled)
1637 {
1638         struct wpa_driver_madwifi_data *drv = priv;
1639         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1640         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled, 1);
1641 }
1642
1643
1644 static int
1645 wpa_driver_madwifi_set_drop_unencrypted(void *priv, int enabled)
1646 {
1647         struct wpa_driver_madwifi_data *drv = priv;
1648         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1649         return set80211param(drv, IEEE80211_PARAM_DROPUNENCRYPTED, enabled, 1);
1650 }
1651
1652 static int
1653 wpa_driver_madwifi_deauthenticate(void *priv, const u8 *addr, int reason_code)
1654 {
1655         struct wpa_driver_madwifi_data *drv = priv;
1656         struct ieee80211req_mlme mlme;
1657
1658         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1659         mlme.im_op = IEEE80211_MLME_DEAUTH;
1660         mlme.im_reason = reason_code;
1661         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1662         return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
1663 }
1664
1665 static int
1666 wpa_driver_madwifi_disassociate(void *priv, const u8 *addr, int reason_code)
1667 {
1668         struct wpa_driver_madwifi_data *drv = priv;
1669         struct ieee80211req_mlme mlme;
1670
1671         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1672         mlme.im_op = IEEE80211_MLME_DISASSOC;
1673         mlme.im_reason = reason_code;
1674         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1675         return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
1676 }
1677
1678 static int
1679 wpa_driver_madwifi_associate(void *priv,
1680                              struct wpa_driver_associate_params *params)
1681 {
1682         struct wpa_driver_madwifi_data *drv = priv;
1683         struct ieee80211req_mlme mlme;
1684         int ret = 0, privacy = 1;
1685
1686         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1687
1688         /*
1689          * NB: Don't need to set the freq or cipher-related state as
1690          *     this is implied by the bssid which is used to locate
1691          *     the scanned node state which holds it.  The ssid is
1692          *     needed to disambiguate an AP that broadcasts multiple
1693          *     ssid's but uses the same bssid.
1694          */
1695         /* XXX error handling is wrong but unclear what to do... */
1696         if (wpa_driver_madwifi_set_wpa_ie(drv, params->wpa_ie,
1697                                           params->wpa_ie_len) < 0)
1698                 ret = -1;
1699
1700         if (params->pairwise_suite == CIPHER_NONE &&
1701             params->group_suite == CIPHER_NONE &&
1702             params->key_mgmt_suite == KEY_MGMT_NONE &&
1703             params->wpa_ie_len == 0)
1704                 privacy = 0;
1705
1706         if (set80211param(drv, IEEE80211_PARAM_PRIVACY, privacy, 1) < 0)
1707                 ret = -1;
1708
1709         if (params->wpa_ie_len &&
1710             set80211param(drv, IEEE80211_PARAM_WPA,
1711                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1, 1) < 0)
1712                 ret = -1;
1713
1714         if (params->bssid == NULL) {
1715                 /* ap_scan=2 mode - driver takes care of AP selection and
1716                  * roaming */
1717                 /* FIX: this does not seem to work; would probably need to
1718                  * change something in the driver */
1719                 if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0)
1720                         ret = -1;
1721
1722                 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
1723                                              params->ssid_len) < 0)
1724                         ret = -1;
1725         } else {
1726                 if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0)
1727                         ret = -1;
1728                 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
1729                                              params->ssid_len) < 0)
1730                         ret = -1;
1731                 os_memset(&mlme, 0, sizeof(mlme));
1732                 mlme.im_op = IEEE80211_MLME_ASSOC;
1733                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1734                 if (set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
1735                                  sizeof(mlme), 1) < 0) {
1736                         wpa_printf(MSG_DEBUG, "%s: SETMLME[ASSOC] failed",
1737                                    __func__);
1738                         ret = -1;
1739                 }
1740         }
1741
1742         return ret;
1743 }
1744
1745 static int
1746 wpa_driver_madwifi_set_auth_alg(void *priv, int auth_alg)
1747 {
1748         struct wpa_driver_madwifi_data *drv = priv;
1749         int authmode;
1750
1751         if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1752             (auth_alg & AUTH_ALG_SHARED_KEY))
1753                 authmode = IEEE80211_AUTH_AUTO;
1754         else if (auth_alg & AUTH_ALG_SHARED_KEY)
1755                 authmode = IEEE80211_AUTH_SHARED;
1756         else
1757                 authmode = IEEE80211_AUTH_OPEN;
1758
1759         return set80211param(drv, IEEE80211_PARAM_AUTHMODE, authmode, 1);
1760 }
1761
1762 static int
1763 wpa_driver_madwifi_scan(void *priv, const u8 *ssid, size_t ssid_len)
1764 {
1765         struct wpa_driver_madwifi_data *drv = priv;
1766         struct iwreq iwr;
1767         int ret = 0;
1768
1769         os_memset(&iwr, 0, sizeof(iwr));
1770         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1771
1772         /* set desired ssid before scan */
1773         /* FIX: scan should not break the current association, so using
1774          * set_ssid may not be the best way of doing this.. */
1775         if (wpa_driver_wext_set_ssid(drv->wext, ssid, ssid_len) < 0)
1776                 ret = -1;
1777
1778         if (ioctl(drv->sock, SIOCSIWSCAN, &iwr) < 0) {
1779                 perror("ioctl[SIOCSIWSCAN]");
1780                 ret = -1;
1781         }
1782
1783         /*
1784          * madwifi delivers a scan complete event so no need to poll, but
1785          * register a backup timeout anyway to make sure that we recover even
1786          * if the driver does not send this event for any reason. This timeout
1787          * will only be used if the event is not delivered (event handler will
1788          * cancel the timeout).
1789          */
1790         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext,
1791                              drv->ctx);
1792         eloop_register_timeout(30, 0, wpa_driver_wext_scan_timeout, drv->wext,
1793                                drv->ctx);
1794
1795         return ret;
1796 }
1797
1798 static int wpa_driver_madwifi_get_bssid(void *priv, u8 *bssid)
1799 {
1800         struct wpa_driver_madwifi_data *drv = priv;
1801         return wpa_driver_wext_get_bssid(drv->wext, bssid);
1802 }
1803
1804
1805 static int wpa_driver_madwifi_get_ssid(void *priv, u8 *ssid)
1806 {
1807         struct wpa_driver_madwifi_data *drv = priv;
1808         return wpa_driver_wext_get_ssid(drv->wext, ssid);
1809 }
1810
1811
1812 static struct wpa_scan_results *
1813 wpa_driver_madwifi_get_scan_results(void *priv)
1814 {
1815         struct wpa_driver_madwifi_data *drv = priv;
1816         return wpa_driver_wext_get_scan_results(drv->wext);
1817 }
1818
1819
1820 static int wpa_driver_madwifi_set_operstate(void *priv, int state)
1821 {
1822         struct wpa_driver_madwifi_data *drv = priv;
1823         return wpa_driver_wext_set_operstate(drv->wext, state);
1824 }
1825
1826
1827 static int wpa_driver_madwifi_set_probe_req_ie(void *priv, const u8 *ies,
1828                                                size_t ies_len)
1829 {
1830         struct ieee80211req_getset_appiebuf *probe_req_ie;
1831         int ret;
1832
1833         probe_req_ie = os_malloc(sizeof(*probe_req_ie) + ies_len);
1834         if (probe_req_ie == NULL)
1835                 return -1;
1836
1837         probe_req_ie->app_frmtype = IEEE80211_APPIE_FRAME_PROBE_REQ;
1838         probe_req_ie->app_buflen = ies_len;
1839         os_memcpy(probe_req_ie->app_buf, ies, ies_len);
1840
1841         ret = set80211priv(priv, IEEE80211_IOCTL_SET_APPIEBUF, probe_req_ie,
1842                            sizeof(struct ieee80211req_getset_appiebuf) +
1843                            ies_len, 1);
1844
1845         os_free(probe_req_ie);
1846
1847         return ret;
1848 }
1849
1850
1851 static void * wpa_driver_madwifi_init(void *ctx, const char *ifname)
1852 {
1853         struct wpa_driver_madwifi_data *drv;
1854
1855         drv = os_zalloc(sizeof(*drv));
1856         if (drv == NULL)
1857                 return NULL;
1858         drv->wext = wpa_driver_wext_init(ctx, ifname);
1859         if (drv->wext == NULL)
1860                 goto fail;
1861
1862         drv->ctx = ctx;
1863         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1864         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1865         if (drv->sock < 0)
1866                 goto fail2;
1867
1868         if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0) {
1869                 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1870                            "roaming", __FUNCTION__);
1871                 goto fail3;
1872         }
1873
1874         if (set80211param(drv, IEEE80211_PARAM_WPA, 3, 1) < 0) {
1875                 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support",
1876                            __FUNCTION__);
1877                 goto fail3;
1878         }
1879
1880         return drv;
1881
1882 fail3:
1883         close(drv->sock);
1884 fail2:
1885         wpa_driver_wext_deinit(drv->wext);
1886 fail:
1887         os_free(drv);
1888         return NULL;
1889 }
1890
1891
1892 static void wpa_driver_madwifi_deinit(void *priv)
1893 {
1894         struct wpa_driver_madwifi_data *drv = priv;
1895
1896         if (wpa_driver_madwifi_set_wpa_ie(drv, NULL, 0) < 0) {
1897                 wpa_printf(MSG_DEBUG, "%s: failed to clear WPA IE",
1898                            __FUNCTION__);
1899         }
1900         if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0) {
1901                 wpa_printf(MSG_DEBUG, "%s: failed to enable driver-based "
1902                            "roaming", __FUNCTION__);
1903         }
1904         if (set80211param(drv, IEEE80211_PARAM_PRIVACY, 0, 1) < 0) {
1905                 wpa_printf(MSG_DEBUG, "%s: failed to disable forced Privacy "
1906                            "flag", __FUNCTION__);
1907         }
1908         if (set80211param(drv, IEEE80211_PARAM_WPA, 0, 1) < 0) {
1909                 wpa_printf(MSG_DEBUG, "%s: failed to disable WPA",
1910                            __FUNCTION__);
1911         }
1912
1913         wpa_driver_wext_deinit(drv->wext);
1914
1915         close(drv->sock);
1916         os_free(drv);
1917 }
1918
1919 #endif /* HOSTAPD */
1920
1921
1922 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1923         .name                   = "madwifi",
1924         .desc                   = "MADWIFI 802.11 support (Atheros, etc.)",
1925 #ifdef HOSTAPD
1926         .hapd_init              = madwifi_init,
1927         .hapd_deinit            = madwifi_deinit,
1928         .set_ieee8021x          = madwifi_set_ieee8021x,
1929         .set_privacy            = madwifi_set_privacy,
1930         .hapd_set_key           = madwifi_set_key,
1931         .get_seqnum             = madwifi_get_seqnum,
1932         .flush                  = madwifi_flush,
1933         .set_generic_elem       = madwifi_set_opt_ie,
1934         .sta_set_flags          = madwifi_sta_set_flags,
1935         .read_sta_data          = madwifi_read_sta_driver_data,
1936         .hapd_send_eapol        = madwifi_send_eapol,
1937         .sta_disassoc           = madwifi_sta_disassoc,
1938         .sta_deauth             = madwifi_sta_deauth,
1939         .hapd_set_ssid          = madwifi_set_ssid,
1940         .hapd_get_ssid          = madwifi_get_ssid,
1941         .hapd_set_countermeasures       = madwifi_set_countermeasures,
1942         .sta_clear_stats        = madwifi_sta_clear_stats,
1943         .commit                 = madwifi_commit,
1944         .set_wps_beacon_ie      = madwifi_set_wps_beacon_ie,
1945         .set_wps_probe_resp_ie  = madwifi_set_wps_probe_resp_ie,
1946 #else /* HOSTAPD */
1947         .get_bssid              = wpa_driver_madwifi_get_bssid,
1948         .get_ssid               = wpa_driver_madwifi_get_ssid,
1949         .set_key                = wpa_driver_madwifi_set_key,
1950         .init                   = wpa_driver_madwifi_init,
1951         .deinit                 = wpa_driver_madwifi_deinit,
1952         .set_countermeasures    = wpa_driver_madwifi_set_countermeasures,
1953         .set_drop_unencrypted   = wpa_driver_madwifi_set_drop_unencrypted,
1954         .scan                   = wpa_driver_madwifi_scan,
1955         .get_scan_results2      = wpa_driver_madwifi_get_scan_results,
1956         .deauthenticate         = wpa_driver_madwifi_deauthenticate,
1957         .disassociate           = wpa_driver_madwifi_disassociate,
1958         .associate              = wpa_driver_madwifi_associate,
1959         .set_auth_alg           = wpa_driver_madwifi_set_auth_alg,
1960         .set_operstate          = wpa_driver_madwifi_set_operstate,
1961         .set_probe_req_ie       = wpa_driver_madwifi_set_probe_req_ie,
1962 #endif /* HOSTAPD */
1963 };