src/drivers/driver_hostap.c

   1 /*
   2  * Driver interaction with Linux Host AP driver
   3  * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16 #include <sys/ioctl.h>
  17
  18 #include "wireless_copy.h"
  19 #include "common.h"
  20 #include "driver.h"
  21 #include "driver_wext.h"
  22 #include "eloop.h"
  23 #include "driver_hostap.h"
  24
  25
  26 #ifdef HOSTAPD
  27
  28 #include <net/if_arp.h>
  29 #include <netpacket/packet.h>
  30
  31 #include "priv_netlink.h"
  32 #include "netlink.h"
  33 #include "common/ieee802_11_defs.h"
  34
  35
  36 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
  37  * frames that might be longer than normal default MTU and they are not
  38  * fragmented */
  39 #define HOSTAPD_MTU 2290
  40
  41 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
  42
  43 struct hostap_driver_data {
  44         struct hostapd_data *hapd;
  45
  46         char iface[IFNAMSIZ + 1];
  47         int sock; /* raw packet socket for driver access */
  48         int ioctl_sock; /* socket for ioctl() use */
  49         struct netlink_data *netlink;
  50
  51         int we_version;
  52
  53         u8 *generic_ie;
  54         size_t generic_ie_len;
  55         u8 *wps_ie;
  56         size_t wps_ie_len;
  57 };
  58
  59
  60 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
  61                          int len);
  62 static int hostap_set_iface_flags(void *priv, int dev_up);
  63
  64 static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len,
  65                         u16 stype)
  66 {
  67         struct ieee80211_hdr *hdr;
  68         u16 fc, ethertype;
  69         u8 *pos, *sa;
  70         size_t left;
  71         union wpa_event_data event;
  72
  73         if (len < sizeof(struct ieee80211_hdr))
  74                 return;
  75
  76         hdr = (struct ieee80211_hdr *) buf;
  77         fc = le_to_host16(hdr->frame_control);
  78
  79         if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) {
  80                 printf("Not ToDS data frame (fc=0x%04x)\n", fc);
  81                 return;
  82         }
  83
  84         sa = hdr->addr2;
  85         os_memset(&event, 0, sizeof(event));
  86         event.rx_from_unknown.hdr = hdr;
  87         event.rx_from_unknown.len = len;
  88         wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event);
  89
  90         pos = (u8 *) (hdr + 1);
  91         left = len - sizeof(*hdr);
  92
  93         if (left < sizeof(rfc1042_header)) {
  94                 printf("Too short data frame\n");
  95                 return;
  96         }
  97
  98         if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) {
  99                 printf("Data frame with no RFC1042 header\n");
 100                 return;
 101         }
 102         pos += sizeof(rfc1042_header);
 103         left -= sizeof(rfc1042_header);
 104
 105         if (left < 2) {
 106                 printf("No ethertype in data frame\n");
 107                 return;
 108         }
 109
 110         ethertype = WPA_GET_BE16(pos);
 111         pos += 2;
 112         left -= 2;
 113         switch (ethertype) {
 114         case ETH_P_PAE:
 115                 hostapd_eapol_receive(drv->hapd, sa, pos, left);
 116                 break;
 117
 118         default:
 119                 printf("Unknown ethertype 0x%04x in data frame\n", ethertype);
 120                 break;
 121         }
 122 }
 123
 124
 125 static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf,
 126                                size_t len, int ok)
 127 {
 128         struct ieee80211_hdr *hdr;
 129         u16 fc;
 130         union wpa_event_data event;
 131
 132         hdr = (struct ieee80211_hdr *) buf;
 133         fc = le_to_host16(hdr->frame_control);
 134
 135         os_memset(&event, 0, sizeof(event));
 136         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 137         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 138         event.tx_status.dst = hdr->addr1;
 139         event.tx_status.data = buf;
 140         event.tx_status.data_len = len;
 141         event.tx_status.ack = ok;
 142         wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event);
 143 }
 144
 145
 146 static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len)
 147 {
 148         struct ieee80211_hdr *hdr;
 149         u16 fc, extra_len, type, stype;
 150         unsigned char *extra = NULL;
 151         size_t data_len = len;
 152         int ver;
 153         union wpa_event_data event;
 154
 155         /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass
 156          * these to user space */
 157         if (len < 24) {
 158                 wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)",
 159                            (unsigned long) len);
 160                 return;
 161         }
 162
 163         hdr = (struct ieee80211_hdr *) buf;
 164         fc = le_to_host16(hdr->frame_control);
 165         type = WLAN_FC_GET_TYPE(fc);
 166         stype = WLAN_FC_GET_STYPE(fc);
 167
 168         if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) {
 169                 wpa_hexdump(MSG_MSGDUMP, "Received management frame",
 170                             buf, len);
 171         }
 172
 173         ver = fc & WLAN_FC_PVER;
 174
 175         /* protocol version 3 is reserved for indicating extra data after the
 176          * payload, version 2 for indicating ACKed frame (TX callbacks), and
 177          * version 1 for indicating failed frame (no ACK, TX callbacks) */
 178         if (ver == 3) {
 179                 u8 *pos = buf + len - 2;
 180                 extra_len = WPA_GET_LE16(pos);
 181                 printf("extra data in frame (elen=%d)\n", extra_len);
 182                 if ((size_t) extra_len + 2 > len) {
 183                         printf("  extra data overflow\n");
 184                         return;
 185                 }
 186                 len -= extra_len + 2;
 187                 extra = buf + len;
 188         } else if (ver == 1 || ver == 2) {
 189                 handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0);
 190                 return;
 191         } else if (ver != 0) {
 192                 printf("unknown protocol version %d\n", ver);
 193                 return;
 194         }
 195
 196         switch (type) {
 197         case WLAN_FC_TYPE_MGMT:
 198                 os_memset(&event, 0, sizeof(event));
 199                 event.rx_mgmt.frame = buf;
 200                 event.rx_mgmt.frame_len = data_len;
 201                 wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event);
 202                 break;
 203         case WLAN_FC_TYPE_CTRL:
 204                 wpa_printf(MSG_DEBUG, "CTRL");
 205                 break;
 206         case WLAN_FC_TYPE_DATA:
 207                 wpa_printf(MSG_DEBUG, "DATA");
 208                 handle_data(drv, buf, data_len, stype);
 209                 break;
 210         default:
 211                 wpa_printf(MSG_DEBUG, "unknown frame type %d", type);
 212                 break;
 213         }
 214 }
 215
 216
 217 static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
 218 {
 219         struct hostap_driver_data *drv = eloop_ctx;
 220         int len;
 221         unsigned char buf[3000];
 222
 223         len = recv(sock, buf, sizeof(buf), 0);
 224         if (len < 0) {
 225                 perror("recv");
 226                 return;
 227         }
 228
 229         handle_frame(drv, buf, len);
 230 }
 231
 232
 233 static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
 234 {
 235         struct ifreq ifr;
 236         struct sockaddr_ll addr;
 237
 238         drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
 239         if (drv->sock < 0) {
 240                 perror("socket[PF_PACKET,SOCK_RAW]");
 241                 return -1;
 242         }
 243
 244         if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) {
 245                 printf("Could not register read socket\n");
 246                 return -1;
 247         }
 248
 249         memset(&ifr, 0, sizeof(ifr));
 250         snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface);
 251         if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
 252                 perror("ioctl(SIOCGIFINDEX)");
 253                 return -1;
 254         }
 255
 256         if (hostap_set_iface_flags(drv, 1)) {
 257                 return -1;
 258         }
 259
 260         memset(&addr, 0, sizeof(addr));
 261         addr.sll_family = AF_PACKET;
 262         addr.sll_ifindex = ifr.ifr_ifindex;
 263         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
 264                    addr.sll_ifindex);
 265
 266         if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
 267                 perror("bind");
 268                 return -1;
 269         }
 270
 271         memset(&ifr, 0, sizeof(ifr));
 272         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
 273         if (ioctl(drv->sock, SIOCGIFHWADDR, &ifr) != 0) {
 274                 perror("ioctl(SIOCGIFHWADDR)");
 275                 return -1;
 276         }
 277
 278         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
 279                 printf("Invalid HW-addr family 0x%04x\n",
 280                        ifr.ifr_hwaddr.sa_family);
 281                 return -1;
 282         }
 283         os_memcpy(own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
 284
 285         return 0;
 286 }
 287
 288
 289 static int hostap_send_mlme(void *priv, const u8 *msg, size_t len)
 290 {
 291         struct hostap_driver_data *drv = priv;
 292         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
 293         int res;
 294
 295         /* Request TX callback */
 296         hdr->frame_control |= host_to_le16(BIT(1));
 297         res = send(drv->sock, msg, len, 0);
 298         hdr->frame_control &= ~host_to_le16(BIT(1));
 299
 300         return res;
 301 }
 302
 303
 304 static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
 305                              size_t data_len, int encrypt, const u8 *own_addr)
 306 {
 307         struct hostap_driver_data *drv = priv;
 308         struct ieee80211_hdr *hdr;
 309         size_t len;
 310         u8 *pos;
 311         int res;
 312
 313         len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len;
 314         hdr = os_zalloc(len);
 315         if (hdr == NULL) {
 316                 printf("malloc() failed for hostapd_send_data(len=%lu)\n",
 317                        (unsigned long) len);
 318                 return -1;
 319         }
 320
 321         hdr->frame_control =
 322                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 323         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 324         if (encrypt)
 325                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 326         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 327         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 328         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 329
 330         pos = (u8 *) (hdr + 1);
 331         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 332         pos += sizeof(rfc1042_header);
 333         *((u16 *) pos) = htons(ETH_P_PAE);
 334         pos += 2;
 335         memcpy(pos, data, data_len);
 336
 337         res = hostap_send_mlme(drv, (u8 *) hdr, len);
 338         if (res < 0) {
 339                 wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
 340                            "failed: %d (%s)",
 341                            (unsigned long) len, errno, strerror(errno));
 342         }
 343         free(hdr);
 344
 345         return res;
 346 }
 347
 348
 349 static int hostap_sta_set_flags(void *priv, const u8 *addr,
 350                                 int total_flags, int flags_or, int flags_and)
 351 {
 352         struct hostap_driver_data *drv = priv;
 353         struct prism2_hostapd_param param;
 354
 355         if (flags_or & WPA_STA_AUTHORIZED)
 356                 flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */
 357         if (!(flags_and & WPA_STA_AUTHORIZED))
 358                 flags_and = ~BIT(5);
 359         else
 360                 flags_and = ~0;
 361         memset(&param, 0, sizeof(param));
 362         param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA;
 363         memcpy(param.sta_addr, addr, ETH_ALEN);
 364         param.u.set_flags_sta.flags_or = flags_or;
 365         param.u.set_flags_sta.flags_and = flags_and;
 366         return hostapd_ioctl(drv, &param, sizeof(param));
 367 }
 368
 369
 370 static int hostap_set_iface_flags(void *priv, int dev_up)
 371 {
 372         struct hostap_driver_data *drv = priv;
 373         struct ifreq ifr;
 374
 375         if (drv->ioctl_sock < 0)
 376                 return -1;
 377
 378         memset(&ifr, 0, sizeof(ifr));
 379         snprintf(ifr.ifr_name, IFNAMSIZ, "%sap", drv->iface);
 380
 381         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 382                 perror("ioctl[SIOCGIFFLAGS]");
 383                 return -1;
 384         }
 385
 386         if (dev_up)
 387                 ifr.ifr_flags |= IFF_UP;
 388         else
 389                 ifr.ifr_flags &= ~IFF_UP;
 390
 391         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 392                 perror("ioctl[SIOCSIFFLAGS]");
 393                 return -1;
 394         }
 395
 396         if (dev_up) {
 397                 memset(&ifr, 0, sizeof(ifr));
 398                 snprintf(ifr.ifr_name, IFNAMSIZ, "%sap", drv->iface);
 399                 ifr.ifr_mtu = HOSTAPD_MTU;
 400                 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
 401                         perror("ioctl[SIOCSIFMTU]");
 402                         printf("Setting MTU failed - trying to survive with "
 403                                "current value\n");
 404                 }
 405         }
 406
 407         return 0;
 408 }
 409
 410
 411 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
 412                          int len)
 413 {
 414         struct hostap_driver_data *drv = priv;
 415         struct iwreq iwr;
 416
 417         memset(&iwr, 0, sizeof(iwr));
 418         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 419         iwr.u.data.pointer = (caddr_t) param;
 420         iwr.u.data.length = len;
 421
 422         if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
 423                 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
 424                 return -1;
 425         }
 426
 427         return 0;
 428 }
 429
 430
 431 static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
 432                                      enum wpa_alg alg, const u8 *addr,
 433                                      int key_idx, int set_tx,
 434                                      const u8 *seq, size_t seq_len,
 435                                      const u8 *key, size_t key_len)
 436 {
 437         struct hostap_driver_data *drv = priv;
 438         struct prism2_hostapd_param *param;
 439         u8 *buf;
 440         size_t blen;
 441         int ret = 0;
 442
 443         blen = sizeof(*param) + key_len;
 444         buf = os_zalloc(blen);
 445         if (buf == NULL)
 446                 return -1;
 447
 448         param = (struct prism2_hostapd_param *) buf;
 449         param->cmd = PRISM2_SET_ENCRYPTION;
 450         if (addr == NULL)
 451                 memset(param->sta_addr, 0xff, ETH_ALEN);
 452         else
 453                 memcpy(param->sta_addr, addr, ETH_ALEN);
 454         switch (alg) {
 455         case WPA_ALG_NONE:
 456                 os_strlcpy((char *) param->u.crypt.alg, "NONE",
 457                            HOSTAP_CRYPT_ALG_NAME_LEN);
 458                 break;
 459         case WPA_ALG_WEP:
 460                 os_strlcpy((char *) param->u.crypt.alg, "WEP",
 461                            HOSTAP_CRYPT_ALG_NAME_LEN);
 462                 break;
 463         case WPA_ALG_TKIP:
 464                 os_strlcpy((char *) param->u.crypt.alg, "TKIP",
 465                            HOSTAP_CRYPT_ALG_NAME_LEN);
 466                 break;
 467         case WPA_ALG_CCMP:
 468                 os_strlcpy((char *) param->u.crypt.alg, "CCMP",
 469                            HOSTAP_CRYPT_ALG_NAME_LEN);
 470                 break;
 471         default:
 472                 os_free(buf);
 473                 return -1;
 474         }
 475         param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
 476         param->u.crypt.idx = key_idx;
 477         param->u.crypt.key_len = key_len;
 478         memcpy((u8 *) (param + 1), key, key_len);
 479
 480         if (hostapd_ioctl(drv, param, blen)) {
 481                 printf("Failed to set encryption.\n");
 482                 ret = -1;
 483         }
 484         free(buf);
 485
 486         return ret;
 487 }
 488
 489
 490 static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr,
 491                              int idx, u8 *seq)
 492 {
 493         struct hostap_driver_data *drv = priv;
 494         struct prism2_hostapd_param *param;
 495         u8 *buf;
 496         size_t blen;
 497         int ret = 0;
 498
 499         blen = sizeof(*param) + 32;
 500         buf = os_zalloc(blen);
 501         if (buf == NULL)
 502                 return -1;
 503
 504         param = (struct prism2_hostapd_param *) buf;
 505         param->cmd = PRISM2_GET_ENCRYPTION;
 506         if (addr == NULL)
 507                 memset(param->sta_addr, 0xff, ETH_ALEN);
 508         else
 509                 memcpy(param->sta_addr, addr, ETH_ALEN);
 510         param->u.crypt.idx = idx;
 511
 512         if (hostapd_ioctl(drv, param, blen)) {
 513                 printf("Failed to get encryption.\n");
 514                 ret = -1;
 515         } else {
 516                 memcpy(seq, param->u.crypt.seq, 8);
 517         }
 518         free(buf);
 519
 520         return ret;
 521 }
 522
 523
 524 static int hostap_ioctl_prism2param(void *priv, int param, int value)
 525 {
 526         struct hostap_driver_data *drv = priv;
 527         struct iwreq iwr;
 528         int *i;
 529
 530         memset(&iwr, 0, sizeof(iwr));
 531         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 532         i = (int *) iwr.u.name;
 533         *i++ = param;
 534         *i++ = value;
 535
 536         if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
 537                 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]");
 538                 return -1;
 539         }
 540
 541         return 0;
 542 }
 543
 544
 545 static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 546 {
 547         struct hostap_driver_data *drv = priv;
 548         int enabled = params->enabled;
 549
 550         /* enable kernel driver support for IEEE 802.1X */
 551         if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) {
 552                 printf("Could not setup IEEE 802.1X support in kernel driver."
 553                        "\n");
 554                 return -1;
 555         }
 556
 557         if (!enabled)
 558                 return 0;
 559
 560         /* use host driver implementation of encryption to allow
 561          * individual keys and passing plaintext EAPOL frames */
 562         if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) ||
 563             hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) {
 564                 printf("Could not setup host-based encryption in kernel "
 565                        "driver.\n");
 566                 return -1;
 567         }
 568
 569         return 0;
 570 }
 571
 572
 573 static int hostap_set_privacy(const char *ifname, void *priv, int enabled)
 574 {
 575         struct hostap_drvier_data *drv = priv;
 576
 577         return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
 578                                         enabled);
 579 }
 580
 581
 582 static int hostap_set_ssid(const char *ifname, void *priv, const u8 *buf,
 583                            int len)
 584 {
 585         struct hostap_driver_data *drv = priv;
 586         struct iwreq iwr;
 587
 588         memset(&iwr, 0, sizeof(iwr));
 589         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 590         iwr.u.essid.flags = 1; /* SSID active */
 591         iwr.u.essid.pointer = (caddr_t) buf;
 592         iwr.u.essid.length = len + 1;
 593
 594         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
 595                 perror("ioctl[SIOCSIWESSID]");
 596                 printf("len=%d\n", len);
 597                 return -1;
 598         }
 599
 600         return 0;
 601 }
 602
 603
 604 static int hostap_flush(void *priv)
 605 {
 606         struct hostap_driver_data *drv = priv;
 607         struct prism2_hostapd_param param;
 608
 609         memset(&param, 0, sizeof(param));
 610         param.cmd = PRISM2_HOSTAPD_FLUSH;
 611         return hostapd_ioctl(drv, &param, sizeof(param));
 612 }
 613
 614
 615 static int hostap_read_sta_data(void *priv,
 616                                 struct hostap_sta_driver_data *data,
 617                                 const u8 *addr)
 618 {
 619         struct hostap_driver_data *drv = priv;
 620         char buf[1024], line[128], *pos;
 621         FILE *f;
 622         unsigned long val;
 623
 624         memset(data, 0, sizeof(*data));
 625         snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR,
 626                  drv->iface, MAC2STR(addr));
 627
 628         f = fopen(buf, "r");
 629         if (!f)
 630                 return -1;
 631         /* Need to read proc file with in one piece, so use large enough
 632          * buffer. */
 633         setbuffer(f, buf, sizeof(buf));
 634
 635         while (fgets(line, sizeof(line), f)) {
 636                 pos = strchr(line, '=');
 637                 if (!pos)
 638                         continue;
 639                 *pos++ = '\0';
 640                 val = strtoul(pos, NULL, 10);
 641                 if (strcmp(line, "rx_packets") == 0)
 642                         data->rx_packets = val;
 643                 else if (strcmp(line, "tx_packets") == 0)
 644                         data->tx_packets = val;
 645                 else if (strcmp(line, "rx_bytes") == 0)
 646                         data->rx_bytes = val;
 647                 else if (strcmp(line, "tx_bytes") == 0)
 648                         data->tx_bytes = val;
 649         }
 650
 651         fclose(f);
 652
 653         return 0;
 654 }
 655
 656
 657 static int hostap_sta_add(const char *ifname, void *priv,
 658                           struct hostapd_sta_add_params *params)
 659 {
 660         struct hostap_driver_data *drv = priv;
 661         struct prism2_hostapd_param param;
 662         int tx_supp_rates = 0;
 663         size_t i;
 664
 665 #define WLAN_RATE_1M BIT(0)
 666 #define WLAN_RATE_2M BIT(1)
 667 #define WLAN_RATE_5M5 BIT(2)
 668 #define WLAN_RATE_11M BIT(3)
 669
 670         for (i = 0; i < params->supp_rates_len; i++) {
 671                 if ((params->supp_rates[i] & 0x7f) == 2)
 672                         tx_supp_rates |= WLAN_RATE_1M;
 673                 if ((params->supp_rates[i] & 0x7f) == 4)
 674                         tx_supp_rates |= WLAN_RATE_2M;
 675                 if ((params->supp_rates[i] & 0x7f) == 11)
 676                         tx_supp_rates |= WLAN_RATE_5M5;
 677                 if ((params->supp_rates[i] & 0x7f) == 22)
 678                         tx_supp_rates |= WLAN_RATE_11M;
 679         }
 680
 681         memset(&param, 0, sizeof(param));
 682         param.cmd = PRISM2_HOSTAPD_ADD_STA;
 683         memcpy(param.sta_addr, params->addr, ETH_ALEN);
 684         param.u.add_sta.aid = params->aid;
 685         param.u.add_sta.capability = params->capability;
 686         param.u.add_sta.tx_supp_rates = tx_supp_rates;
 687         return hostapd_ioctl(drv, &param, sizeof(param));
 688 }
 689
 690
 691 static int hostap_sta_remove(void *priv, const u8 *addr)
 692 {
 693         struct hostap_driver_data *drv = priv;
 694         struct prism2_hostapd_param param;
 695
 696         hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED);
 697
 698         memset(&param, 0, sizeof(param));
 699         param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
 700         memcpy(param.sta_addr, addr, ETH_ALEN);
 701         if (hostapd_ioctl(drv, &param, sizeof(param))) {
 702                 printf("Could not remove station from kernel driver.\n");
 703                 return -1;
 704         }
 705         return 0;
 706 }
 707
 708
 709 static int hostap_get_inact_sec(void *priv, const u8 *addr)
 710 {
 711         struct hostap_driver_data *drv = priv;
 712         struct prism2_hostapd_param param;
 713
 714         memset(&param, 0, sizeof(param));
 715         param.cmd = PRISM2_HOSTAPD_GET_INFO_STA;
 716         memcpy(param.sta_addr, addr, ETH_ALEN);
 717         if (hostapd_ioctl(drv, &param, sizeof(param))) {
 718                 return -1;
 719         }
 720
 721         return param.u.get_info_sta.inactive_sec;
 722 }
 723
 724
 725 static int hostap_sta_clear_stats(void *priv, const u8 *addr)
 726 {
 727         struct hostap_driver_data *drv = priv;
 728         struct prism2_hostapd_param param;
 729
 730         memset(&param, 0, sizeof(param));
 731         param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS;
 732         memcpy(param.sta_addr, addr, ETH_ALEN);
 733         if (hostapd_ioctl(drv, &param, sizeof(param))) {
 734                 return -1;
 735         }
 736
 737         return 0;
 738 }
 739
 740
 741 static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv)
 742 {
 743         struct prism2_hostapd_param *param;
 744         int res;
 745         size_t blen, elem_len;
 746
 747         elem_len = drv->generic_ie_len + drv->wps_ie_len;
 748         blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len;
 749         if (blen < sizeof(*param))
 750                 blen = sizeof(*param);
 751
 752         param = os_zalloc(blen);
 753         if (param == NULL)
 754                 return -1;
 755
 756         param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
 757         param->u.generic_elem.len = elem_len;
 758         if (drv->generic_ie) {
 759                 os_memcpy(param->u.generic_elem.data, drv->generic_ie,
 760                           drv->generic_ie_len);
 761         }
 762         if (drv->wps_ie) {
 763                 os_memcpy(&param->u.generic_elem.data[drv->generic_ie_len],
 764                           drv->wps_ie, drv->wps_ie_len);
 765         }
 766         wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE",
 767                     param->u.generic_elem.data, elem_len);
 768         res = hostapd_ioctl(drv, param, blen);
 769
 770         os_free(param);
 771
 772         return res;
 773 }
 774
 775
 776 static int hostap_set_generic_elem(const char *ifname, void *priv,
 777                                    const u8 *elem, size_t elem_len)
 778 {
 779         struct hostap_driver_data *drv = priv;
 780
 781         os_free(drv->generic_ie);
 782         drv->generic_ie = NULL;
 783         drv->generic_ie_len = 0;
 784         if (elem) {
 785                 drv->generic_ie = os_malloc(elem_len);
 786                 if (drv->generic_ie == NULL)
 787                         return -1;
 788                 os_memcpy(drv->generic_ie, elem, elem_len);
 789                 drv->generic_ie_len = elem_len;
 790         }
 791
 792         return hostapd_ioctl_set_generic_elem(drv);
 793 }
 794
 795
 796 static int hostap_set_ap_wps_ie(const char *ifname, void *priv,
 797                                 const struct wpabuf *beacon,
 798                                 const struct wpabuf *proberesp)
 799 {
 800         struct hostap_driver_data *drv = priv;
 801
 802         /*
 803          * Host AP driver supports only one set of extra IEs, so we need to
 804          * use the Probe Response IEs also for Beacon frames since they include
 805          * more information.
 806          */
 807
 808         os_free(drv->wps_ie);
 809         drv->wps_ie = NULL;
 810         drv->wps_ie_len = 0;
 811         if (proberesp) {
 812                 drv->wps_ie = os_malloc(wpabuf_len(proberesp));
 813                 if (drv->wps_ie == NULL)
 814                         return -1;
 815                 os_memcpy(drv->wps_ie, wpabuf_head(proberesp),
 816                           wpabuf_len(proberesp));
 817                 drv->wps_ie_len = wpabuf_len(proberesp);
 818         }
 819
 820         return hostapd_ioctl_set_generic_elem(drv);
 821 }
 822
 823
 824 static void
 825 hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv,
 826                                        char *custom)
 827 {
 828         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 829
 830         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 831                 char *pos;
 832                 u8 addr[ETH_ALEN];
 833                 pos = strstr(custom, "addr=");
 834                 if (pos == NULL) {
 835                         wpa_printf(MSG_DEBUG,
 836                                    "MLME-MICHAELMICFAILURE.indication "
 837                                    "without sender address ignored");
 838                         return;
 839                 }
 840                 pos += 5;
 841                 if (hwaddr_aton(pos, addr) == 0) {
 842                         union wpa_event_data data;
 843                         os_memset(&data, 0, sizeof(data));
 844                         data.michael_mic_failure.unicast = 1;
 845                         data.michael_mic_failure.src = addr;
 846                         wpa_supplicant_event(drv->hapd,
 847                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 848                 } else {
 849                         wpa_printf(MSG_DEBUG,
 850                                    "MLME-MICHAELMICFAILURE.indication "
 851                                    "with invalid MAC address");
 852                 }
 853         }
 854 }
 855
 856
 857 static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv,
 858                                             char *data, int len)
 859 {
 860         struct iw_event iwe_buf, *iwe = &iwe_buf;
 861         char *pos, *end, *custom, *buf;
 862
 863         pos = data;
 864         end = data + len;
 865
 866         while (pos + IW_EV_LCP_LEN <= end) {
 867                 /* Event data may be unaligned, so make a local, aligned copy
 868                  * before processing. */
 869                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 870                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
 871                            iwe->cmd, iwe->len);
 872                 if (iwe->len <= IW_EV_LCP_LEN)
 873                         return;
 874
 875                 custom = pos + IW_EV_POINT_LEN;
 876                 if (drv->we_version > 18 &&
 877                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 878                      iwe->cmd == IWEVCUSTOM)) {
 879                         /* WE-19 removed the pointer from struct iw_point */
 880                         char *dpos = (char *) &iwe_buf.u.data.length;
 881                         int dlen = dpos - (char *) &iwe_buf;
 882                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 883                                sizeof(struct iw_event) - dlen);
 884                 } else {
 885                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 886                         custom += IW_EV_POINT_OFF;
 887                 }
 888
 889                 switch (iwe->cmd) {
 890                 case IWEVCUSTOM:
 891                         if (custom + iwe->u.data.length > end)
 892                                 return;
 893                         buf = malloc(iwe->u.data.length + 1);
 894                         if (buf == NULL)
 895                                 return;
 896                         memcpy(buf, custom, iwe->u.data.length);
 897                         buf[iwe->u.data.length] = '\0';
 898                         hostapd_wireless_event_wireless_custom(drv, buf);
 899                         free(buf);
 900                         break;
 901                 }
 902
 903                 pos += iwe->len;
 904         }
 905 }
 906
 907
 908 static void hostapd_wireless_event_rtm_newlink(void *ctx,
 909                                                struct ifinfomsg *ifi,
 910                                                u8 *buf, size_t len)
 911 {
 912         struct hostap_driver_data *drv = ctx;
 913         int attrlen, rta_len;
 914         struct rtattr *attr;
 915
 916         /* TODO: use ifi->ifi_index to filter out wireless events from other
 917          * interfaces */
 918
 919         attrlen = len;
 920         attr = (struct rtattr *) buf;
 921
 922         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 923         while (RTA_OK(attr, attrlen)) {
 924                 if (attr->rta_type == IFLA_WIRELESS) {
 925                         hostapd_wireless_event_wireless(
 926                                 drv, ((char *) attr) + rta_len,
 927                                 attr->rta_len - rta_len);
 928                 }
 929                 attr = RTA_NEXT(attr, attrlen);
 930         }
 931 }
 932
 933
 934 static int hostap_get_we_version(struct hostap_driver_data *drv)
 935 {
 936         struct iw_range *range;
 937         struct iwreq iwr;
 938         int minlen;
 939         size_t buflen;
 940
 941         drv->we_version = 0;
 942
 943         /*
 944          * Use larger buffer than struct iw_range in order to allow the
 945          * structure to grow in the future.
 946          */
 947         buflen = sizeof(struct iw_range) + 500;
 948         range = os_zalloc(buflen);
 949         if (range == NULL)
 950                 return -1;
 951
 952         memset(&iwr, 0, sizeof(iwr));
 953         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 954         iwr.u.data.pointer = (caddr_t) range;
 955         iwr.u.data.length = buflen;
 956
 957         minlen = ((char *) &range->enc_capa) - (char *) range +
 958                 sizeof(range->enc_capa);
 959
 960         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
 961                 perror("ioctl[SIOCGIWRANGE]");
 962                 free(range);
 963                 return -1;
 964         } else if (iwr.u.data.length >= minlen &&
 965                    range->we_version_compiled >= 18) {
 966                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
 967                            "WE(source)=%d enc_capa=0x%x",
 968                            range->we_version_compiled,
 969                            range->we_version_source,
 970                            range->enc_capa);
 971                 drv->we_version = range->we_version_compiled;
 972         }
 973
 974         free(range);
 975         return 0;
 976 }
 977
 978
 979 static int hostap_wireless_event_init(struct hostap_driver_data *drv)
 980 {
 981         struct netlink_config *cfg;
 982
 983         hostap_get_we_version(drv);
 984
 985         cfg = os_zalloc(sizeof(*cfg));
 986         if (cfg == NULL)
 987                 return -1;
 988         cfg->ctx = drv;
 989         cfg->newlink_cb = hostapd_wireless_event_rtm_newlink;
 990         drv->netlink = netlink_init(cfg);
 991         if (drv->netlink == NULL) {
 992                 os_free(cfg);
 993                 return -1;
 994         }
 995
 996         return 0;
 997 }
 998
 999
1000 static void * hostap_init(struct hostapd_data *hapd,
1001                           struct wpa_init_params *params)
1002 {
1003         struct hostap_driver_data *drv;
1004
1005         drv = os_zalloc(sizeof(struct hostap_driver_data));
1006         if (drv == NULL) {
1007                 printf("Could not allocate memory for hostapd driver data\n");
1008                 return NULL;
1009         }
1010
1011         drv->hapd = hapd;
1012         drv->ioctl_sock = drv->sock = -1;
1013         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
1014
1015         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1016         if (drv->ioctl_sock < 0) {
1017                 perror("socket[PF_INET,SOCK_DGRAM]");
1018                 free(drv);
1019                 return NULL;
1020         }
1021
1022         if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) {
1023                 printf("Could not enable hostapd mode for interface %s\n",
1024                        drv->iface);
1025                 close(drv->ioctl_sock);
1026                 free(drv);
1027                 return NULL;
1028         }
1029
1030         if (hostap_init_sockets(drv, params->own_addr) ||
1031             hostap_wireless_event_init(drv)) {
1032                 close(drv->ioctl_sock);
1033                 free(drv);
1034                 return NULL;
1035         }
1036
1037         return drv;
1038 }
1039
1040
1041 static void hostap_driver_deinit(void *priv)
1042 {
1043         struct hostap_driver_data *drv = priv;
1044
1045         netlink_deinit(drv->netlink);
1046         (void) hostap_set_iface_flags(drv, 0);
1047         (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0);
1048         (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0);
1049
1050         if (drv->ioctl_sock >= 0)
1051                 close(drv->ioctl_sock);
1052
1053         if (drv->sock >= 0)
1054                 close(drv->sock);
1055
1056         os_free(drv->generic_ie);
1057         os_free(drv->wps_ie);
1058
1059         free(drv);
1060 }
1061
1062
1063 static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
1064                              int reason)
1065 {
1066         struct hostap_driver_data *drv = priv;
1067         struct ieee80211_mgmt mgmt;
1068
1069         memset(&mgmt, 0, sizeof(mgmt));
1070         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1071                                           WLAN_FC_STYPE_DEAUTH);
1072         memcpy(mgmt.da, addr, ETH_ALEN);
1073         memcpy(mgmt.sa, own_addr, ETH_ALEN);
1074         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1075         mgmt.u.deauth.reason_code = host_to_le16(reason);
1076         return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1077                                 sizeof(mgmt.u.deauth));
1078 }
1079
1080
1081 static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
1082                                int reason)
1083 {
1084         struct hostap_driver_data *drv = priv;
1085         struct ieee80211_mgmt mgmt;
1086
1087         memset(&mgmt, 0, sizeof(mgmt));
1088         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1089                                           WLAN_FC_STYPE_DISASSOC);
1090         memcpy(mgmt.da, addr, ETH_ALEN);
1091         memcpy(mgmt.sa, own_addr, ETH_ALEN);
1092         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1093         mgmt.u.disassoc.reason_code = host_to_le16(reason);
1094         return  hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1095                                  sizeof(mgmt.u.disassoc));
1096 }
1097
1098
1099 static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
1100                                                             u16 *num_modes,
1101                                                             u16 *flags)
1102 {
1103         struct hostapd_hw_modes *mode;
1104         int i, clen, rlen;
1105         const short chan2freq[14] = {
1106                 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1107                 2447, 2452, 2457, 2462, 2467, 2472, 2484
1108         };
1109
1110         mode = os_zalloc(sizeof(struct hostapd_hw_modes));
1111         if (mode == NULL)
1112                 return NULL;
1113
1114         *num_modes = 1;
1115         *flags = 0;
1116
1117         mode->mode = HOSTAPD_MODE_IEEE80211B;
1118         mode->num_channels = 14;
1119         mode->num_rates = 4;
1120
1121         clen = mode->num_channels * sizeof(struct hostapd_channel_data);
1122         rlen = mode->num_rates * sizeof(int);
1123
1124         mode->channels = os_zalloc(clen);
1125         mode->rates = os_zalloc(rlen);
1126         if (mode->channels == NULL || mode->rates == NULL) {
1127                 os_free(mode->channels);
1128                 os_free(mode->rates);
1129                 os_free(mode);
1130                 return NULL;
1131         }
1132
1133         for (i = 0; i < 14; i++) {
1134                 mode->channels[i].chan = i + 1;
1135                 mode->channels[i].freq = chan2freq[i];
1136                 /* TODO: Get allowed channel list from the driver */
1137                 if (i >= 11)
1138                         mode->channels[i].flag = HOSTAPD_CHAN_DISABLED;
1139         }
1140
1141         mode->rates[0] = 10;
1142         mode->rates[1] = 20;
1143         mode->rates[2] = 55;
1144         mode->rates[3] = 110;
1145
1146         return mode;
1147 }
1148
1149 #else /* HOSTAPD */
1150
1151 struct wpa_driver_hostap_data {
1152         void *wext; /* private data for driver_wext */
1153         void *ctx;
1154         char ifname[IFNAMSIZ + 1];
1155         int sock;
1156         int current_mode; /* infra/adhoc */
1157 };
1158
1159
1160 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg);
1161
1162
1163 static int hostapd_ioctl(struct wpa_driver_hostap_data *drv,
1164                          struct prism2_hostapd_param *param,
1165                          int len, int show_err)
1166 {
1167         struct iwreq iwr;
1168
1169         os_memset(&iwr, 0, sizeof(iwr));
1170         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1171         iwr.u.data.pointer = (caddr_t) param;
1172         iwr.u.data.length = len;
1173
1174         if (ioctl(drv->sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
1175                 int ret = errno;
1176                 if (show_err)
1177                         perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
1178                 return ret;
1179         }
1180
1181         return 0;
1182 }
1183
1184
1185 static int wpa_driver_hostap_set_wpa_ie(struct wpa_driver_hostap_data *drv,
1186                                         const u8 *wpa_ie, size_t wpa_ie_len)
1187 {
1188         struct prism2_hostapd_param *param;
1189         int res;
1190         size_t blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + wpa_ie_len;
1191         if (blen < sizeof(*param))
1192                 blen = sizeof(*param);
1193
1194         param = os_zalloc(blen);
1195         if (param == NULL)
1196                 return -1;
1197
1198         param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
1199         param->u.generic_elem.len = wpa_ie_len;
1200         os_memcpy(param->u.generic_elem.data, wpa_ie, wpa_ie_len);
1201         res = hostapd_ioctl(drv, param, blen, 1);
1202
1203         os_free(param);
1204
1205         return res;
1206 }
1207
1208
1209 static int prism2param(struct wpa_driver_hostap_data *drv, int param,
1210                        int value)
1211 {
1212         struct iwreq iwr;
1213         int *i, ret = 0;
1214
1215         os_memset(&iwr, 0, sizeof(iwr));
1216         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1217         i = (int *) iwr.u.name;
1218         *i++ = param;
1219         *i++ = value;
1220
1221         if (ioctl(drv->sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
1222                 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]");
1223                 ret = -1;
1224         }
1225         return ret;
1226 }
1227
1228
1229 static int wpa_driver_hostap_set_wpa(void *priv, int enabled)
1230 {
1231         struct wpa_driver_hostap_data *drv = priv;
1232         int ret = 0;
1233
1234         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1235
1236         if (!enabled && wpa_driver_hostap_set_wpa_ie(drv, NULL, 0) < 0)
1237                 ret = -1;
1238         if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING, enabled ? 2 : 0) < 0)
1239                 ret = -1;
1240         if (prism2param(drv, PRISM2_PARAM_WPA, enabled) < 0)
1241                 ret = -1;
1242
1243         return ret;
1244 }
1245
1246
1247 static void show_set_key_error(struct prism2_hostapd_param *param)
1248 {
1249         switch (param->u.crypt.err) {
1250         case HOSTAP_CRYPT_ERR_UNKNOWN_ALG:
1251                 wpa_printf(MSG_INFO, "Unknown algorithm '%s'.",
1252                            param->u.crypt.alg);
1253                 wpa_printf(MSG_INFO, "You may need to load kernel module to "
1254                            "register that algorithm.");
1255                 wpa_printf(MSG_INFO, "E.g., 'modprobe hostap_crypt_wep' for "
1256                            "WEP.");
1257                 break;
1258         case HOSTAP_CRYPT_ERR_UNKNOWN_ADDR:
1259                 wpa_printf(MSG_INFO, "Unknown address " MACSTR ".",
1260                            MAC2STR(param->sta_addr));
1261                 break;
1262         case HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED:
1263                 wpa_printf(MSG_INFO, "Crypt algorithm initialization failed.");
1264                 break;
1265         case HOSTAP_CRYPT_ERR_KEY_SET_FAILED:
1266                 wpa_printf(MSG_INFO, "Key setting failed.");
1267                 break;
1268         case HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED:
1269                 wpa_printf(MSG_INFO, "TX key index setting failed.");
1270                 break;
1271         case HOSTAP_CRYPT_ERR_CARD_CONF_FAILED:
1272                 wpa_printf(MSG_INFO, "Card configuration failed.");
1273                 break;
1274         }
1275 }
1276
1277
1278 static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
1279                                      enum wpa_alg alg, const u8 *addr,
1280                                      int key_idx, int set_tx,
1281                                      const u8 *seq, size_t seq_len,
1282                                      const u8 *key, size_t key_len)
1283 {
1284         struct wpa_driver_hostap_data *drv = priv;
1285         struct prism2_hostapd_param *param;
1286         u8 *buf;
1287         size_t blen;
1288         int ret = 0;
1289         char *alg_name;
1290
1291         switch (alg) {
1292         case WPA_ALG_NONE:
1293                 alg_name = "none";
1294                 break;
1295         case WPA_ALG_WEP:
1296                 alg_name = "WEP";
1297                 break;
1298         case WPA_ALG_TKIP:
1299                 alg_name = "TKIP";
1300                 break;
1301         case WPA_ALG_CCMP:
1302                 alg_name = "CCMP";
1303                 break;
1304         default:
1305                 return -1;
1306         }
1307
1308         wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
1309                    "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
1310                    (unsigned long) seq_len, (unsigned long) key_len);
1311
1312         if (seq_len > 8)
1313                 return -2;
1314
1315         blen = sizeof(*param) + key_len;
1316         buf = os_zalloc(blen);
1317         if (buf == NULL)
1318                 return -1;
1319
1320         param = (struct prism2_hostapd_param *) buf;
1321         param->cmd = PRISM2_SET_ENCRYPTION;
1322         /* TODO: In theory, STA in client mode can use five keys; four default
1323          * keys for receiving (with keyidx 0..3) and one individual key for
1324          * both transmitting and receiving (keyidx 0) _unicast_ packets. Now,
1325          * keyidx 0 is reserved for this unicast use and default keys can only
1326          * use keyidx 1..3 (i.e., default key with keyidx 0 is not supported).
1327          * This should be fine for more or less all cases, but for completeness
1328          * sake, the driver could be enhanced to support the missing key. */
1329 #if 0
1330         if (addr == NULL)
1331                 os_memset(param->sta_addr, 0xff, ETH_ALEN);
1332         else
1333                 os_memcpy(param->sta_addr, addr, ETH_ALEN);
1334 #else
1335         os_memset(param->sta_addr, 0xff, ETH_ALEN);
1336 #endif
1337         os_strlcpy((char *) param->u.crypt.alg, alg_name,
1338                    HOSTAP_CRYPT_ALG_NAME_LEN);
1339         param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
1340         param->u.crypt.idx = key_idx;
1341         os_memcpy(param->u.crypt.seq, seq, seq_len);
1342         param->u.crypt.key_len = key_len;
1343         os_memcpy((u8 *) (param + 1), key, key_len);
1344
1345         if (hostapd_ioctl(drv, param, blen, 1)) {
1346                 wpa_printf(MSG_WARNING, "Failed to set encryption.");
1347                 show_set_key_error(param);
1348                 ret = -1;
1349         }
1350         os_free(buf);
1351
1352         return ret;
1353 }
1354
1355
1356 static int wpa_driver_hostap_set_countermeasures(void *priv, int enabled)
1357 {
1358         struct wpa_driver_hostap_data *drv = priv;
1359         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1360         return prism2param(drv, PRISM2_PARAM_TKIP_COUNTERMEASURES, enabled);
1361 }
1362
1363
1364 static int wpa_driver_hostap_reset(struct wpa_driver_hostap_data *drv,
1365                                    int type)
1366 {
1367         struct iwreq iwr;
1368         int *i, ret = 0;
1369
1370         wpa_printf(MSG_DEBUG, "%s: type=%d", __FUNCTION__, type);
1371
1372         os_memset(&iwr, 0, sizeof(iwr));
1373         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1374         i = (int *) iwr.u.name;
1375         *i++ = type;
1376
1377         if (ioctl(drv->sock, PRISM2_IOCTL_RESET, &iwr) < 0) {
1378                 perror("ioctl[PRISM2_IOCTL_RESET]");
1379                 ret = -1;
1380         }
1381         return ret;
1382 }
1383
1384
1385 static int wpa_driver_hostap_mlme(struct wpa_driver_hostap_data *drv,
1386                                   const u8 *addr, int cmd, int reason_code)
1387 {
1388         struct prism2_hostapd_param param;
1389         int ret;
1390
1391         /* There does not seem to be a better way of deauthenticating or
1392          * disassociating with Prism2/2.5/3 than sending the management frame
1393          * and then resetting the Port0 to make sure both the AP and the STA
1394          * end up in disconnected state. */
1395         os_memset(&param, 0, sizeof(param));
1396         param.cmd = PRISM2_HOSTAPD_MLME;
1397         os_memcpy(param.sta_addr, addr, ETH_ALEN);
1398         param.u.mlme.cmd = cmd;
1399         param.u.mlme.reason_code = reason_code;
1400         ret = hostapd_ioctl(drv, &param, sizeof(param), 1);
1401         if (ret == 0) {
1402                 os_sleep(0, 100000);
1403                 ret = wpa_driver_hostap_reset(drv, 2);
1404         }
1405         return ret;
1406 }
1407
1408
1409 static int wpa_driver_hostap_deauthenticate(void *priv, const u8 *addr,
1410                                             int reason_code)
1411 {
1412         struct wpa_driver_hostap_data *drv = priv;
1413         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1414         return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DEAUTH,
1415                                       reason_code);
1416 }
1417
1418
1419 static int wpa_driver_hostap_disassociate(void *priv, const u8 *addr,
1420                                           int reason_code)
1421 {
1422         struct wpa_driver_hostap_data *drv = priv;
1423         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1424         return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DISASSOC,
1425                                       reason_code);
1426 }
1427
1428
1429 static int
1430 wpa_driver_hostap_associate(void *priv,
1431                             struct wpa_driver_associate_params *params)
1432 {
1433         struct wpa_driver_hostap_data *drv = priv;
1434         int ret = 0;
1435         int allow_unencrypted_eapol;
1436
1437         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1438
1439         if (prism2param(drv, PRISM2_PARAM_DROP_UNENCRYPTED,
1440                         params->drop_unencrypted) < 0)
1441                 ret = -1;
1442         if (wpa_driver_hostap_set_auth_alg(drv, params->auth_alg) < 0)
1443                 ret = -1;
1444         if (params->mode != drv->current_mode) {
1445                 /* At the moment, Host AP driver requires host_roaming=2 for
1446                  * infrastructure mode and host_roaming=0 for adhoc. */
1447                 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING,
1448                                 params->mode == IEEE80211_MODE_IBSS ? 0 : 2) <
1449                     0) {
1450                         wpa_printf(MSG_DEBUG, "%s: failed to set host_roaming",
1451                                    __func__);
1452                 }
1453                 drv->current_mode = params->mode;
1454         }
1455
1456         if (prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
1457                         params->key_mgmt_suite != KEY_MGMT_NONE) < 0)
1458                 ret = -1;
1459         if (wpa_driver_hostap_set_wpa_ie(drv, params->wpa_ie,
1460                                          params->wpa_ie_len) < 0)
1461                 ret = -1;
1462         if (wpa_driver_wext_set_mode(drv->wext, params->mode) < 0)
1463                 ret = -1;
1464         if (params->freq &&
1465             wpa_driver_wext_set_freq(drv->wext, params->freq) < 0)
1466                 ret = -1;
1467         if (wpa_driver_wext_set_ssid(drv->wext, params->ssid, params->ssid_len)
1468             < 0)
1469                 ret = -1;
1470         if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0)
1471                 ret = -1;
1472
1473         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
1474          * not using WPA. IEEE 802.1X specifies that these frames are not
1475          * encrypted, but WPA encrypts them when pairwise keys are in use. */
1476         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
1477             params->key_mgmt_suite == KEY_MGMT_PSK)
1478                 allow_unencrypted_eapol = 0;
1479         else
1480                 allow_unencrypted_eapol = 1;
1481
1482         if (prism2param(drv, PRISM2_PARAM_IEEE_802_1X,
1483                         allow_unencrypted_eapol) < 0) {
1484                 wpa_printf(MSG_DEBUG, "hostap: Failed to configure "
1485                            "ieee_802_1x param");
1486                 /* Ignore this error.. driver_hostap.c can also be used with
1487                  * other drivers that do not support this prism2_param. */
1488         }
1489
1490         return ret;
1491 }
1492
1493
1494 static int wpa_driver_hostap_scan(void *priv,
1495                                   struct wpa_driver_scan_params *params)
1496 {
1497         struct wpa_driver_hostap_data *drv = priv;
1498         struct prism2_hostapd_param param;
1499         int ret;
1500         const u8 *ssid = params->ssids[0].ssid;
1501         size_t ssid_len = params->ssids[0].ssid_len;
1502
1503         if (ssid == NULL) {
1504                 /* Use standard Linux Wireless Extensions ioctl if possible
1505                  * because some drivers using hostap code in wpa_supplicant
1506                  * might not support Host AP specific scan request (with SSID
1507                  * info). */
1508                 return wpa_driver_wext_scan(drv->wext, params);
1509         }
1510
1511         if (ssid_len > 32)
1512                 ssid_len = 32;
1513
1514         os_memset(&param, 0, sizeof(param));
1515         param.cmd = PRISM2_HOSTAPD_SCAN_REQ;
1516         param.u.scan_req.ssid_len = ssid_len;
1517         os_memcpy(param.u.scan_req.ssid, ssid, ssid_len);
1518         ret = hostapd_ioctl(drv, &param, sizeof(param), 1);
1519
1520         /* Not all drivers generate "scan completed" wireless event, so try to
1521          * read results after a timeout. */
1522         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext,
1523                              drv->ctx);
1524         eloop_register_timeout(3, 0, wpa_driver_wext_scan_timeout, drv->wext,
1525                                drv->ctx);
1526
1527         return ret;
1528 }
1529
1530
1531 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg)
1532 {
1533         struct wpa_driver_hostap_data *drv = priv;
1534         int algs = 0;
1535
1536         if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
1537                 algs |= 1;
1538         if (auth_alg & AUTH_ALG_SHARED_KEY)
1539                 algs |= 2;
1540         if (auth_alg & AUTH_ALG_LEAP)
1541                 algs |= 4;
1542         if (algs == 0)
1543                 algs = 1; /* at least one algorithm should be set */
1544
1545         return prism2param(drv, PRISM2_PARAM_AP_AUTH_ALGS, algs);
1546 }
1547
1548
1549 static int wpa_driver_hostap_get_bssid(void *priv, u8 *bssid)
1550 {
1551         struct wpa_driver_hostap_data *drv = priv;
1552         return wpa_driver_wext_get_bssid(drv->wext, bssid);
1553 }
1554
1555
1556 static int wpa_driver_hostap_get_ssid(void *priv, u8 *ssid)
1557 {
1558         struct wpa_driver_hostap_data *drv = priv;
1559         return wpa_driver_wext_get_ssid(drv->wext, ssid);
1560 }
1561
1562
1563 static struct wpa_scan_results * wpa_driver_hostap_get_scan_results(void *priv)
1564 {
1565         struct wpa_driver_hostap_data *drv = priv;
1566         return wpa_driver_wext_get_scan_results(drv->wext);
1567 }
1568
1569
1570 static int wpa_driver_hostap_set_operstate(void *priv, int state)
1571 {
1572         struct wpa_driver_hostap_data *drv = priv;
1573         return wpa_driver_wext_set_operstate(drv->wext, state);
1574 }
1575
1576
1577 static void * wpa_driver_hostap_init(void *ctx, const char *ifname)
1578 {
1579         struct wpa_driver_hostap_data *drv;
1580
1581         drv = os_zalloc(sizeof(*drv));
1582         if (drv == NULL)
1583                 return NULL;
1584         drv->wext = wpa_driver_wext_init(ctx, ifname);
1585         if (drv->wext == NULL) {
1586                 os_free(drv);
1587                 return NULL;
1588         }
1589
1590         drv->ctx = ctx;
1591         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1592         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1593         if (drv->sock < 0) {
1594                 perror("socket");
1595                 wpa_driver_wext_deinit(drv->wext);
1596                 os_free(drv);
1597                 return NULL;
1598         }
1599
1600         if (os_strncmp(ifname, "wlan", 4) == 0) {
1601                 /*
1602                  * Host AP driver may use both wlan# and wifi# interface in
1603                  * wireless events.
1604                  */
1605                 char ifname2[IFNAMSIZ + 1];
1606                 os_strlcpy(ifname2, ifname, sizeof(ifname2));
1607                 os_memcpy(ifname2, "wifi", 4);
1608                 wpa_driver_wext_alternative_ifindex(drv->wext, ifname2);
1609         }
1610
1611         wpa_driver_hostap_set_wpa(drv, 1);
1612
1613         return drv;
1614 }
1615
1616
1617 static void wpa_driver_hostap_deinit(void *priv)
1618 {
1619         struct wpa_driver_hostap_data *drv = priv;
1620         wpa_driver_hostap_set_wpa(drv, 0);
1621         wpa_driver_wext_deinit(drv->wext);
1622         close(drv->sock);
1623         os_free(drv);
1624 }
1625
1626 #endif /* HOSTAPD */
1627
1628
1629 const struct wpa_driver_ops wpa_driver_hostap_ops = {
1630         .name = "hostap",
1631         .desc = "Host AP driver (Intersil Prism2/2.5/3)",
1632         .set_key = wpa_driver_hostap_set_key,
1633 #ifdef HOSTAPD
1634         .hapd_init = hostap_init,
1635         .hapd_deinit = hostap_driver_deinit,
1636         .set_ieee8021x = hostap_set_ieee8021x,
1637         .set_privacy = hostap_set_privacy,
1638         .get_seqnum = hostap_get_seqnum,
1639         .flush = hostap_flush,
1640         .set_generic_elem = hostap_set_generic_elem,
1641         .read_sta_data = hostap_read_sta_data,
1642         .hapd_send_eapol = hostap_send_eapol,
1643         .sta_set_flags = hostap_sta_set_flags,
1644         .sta_deauth = hostap_sta_deauth,
1645         .sta_disassoc = hostap_sta_disassoc,
1646         .sta_remove = hostap_sta_remove,
1647         .hapd_set_ssid = hostap_set_ssid,
1648         .send_mlme = hostap_send_mlme,
1649         .sta_add = hostap_sta_add,
1650         .get_inact_sec = hostap_get_inact_sec,
1651         .sta_clear_stats = hostap_sta_clear_stats,
1652         .get_hw_feature_data = hostap_get_hw_feature_data,
1653         .set_ap_wps_ie = hostap_set_ap_wps_ie,
1654 #else /* HOSTAPD */
1655         .get_bssid = wpa_driver_hostap_get_bssid,
1656         .get_ssid = wpa_driver_hostap_get_ssid,
1657         .set_countermeasures = wpa_driver_hostap_set_countermeasures,
1658         .scan2 = wpa_driver_hostap_scan,
1659         .get_scan_results2 = wpa_driver_hostap_get_scan_results,
1660         .deauthenticate = wpa_driver_hostap_deauthenticate,
1661         .disassociate = wpa_driver_hostap_disassociate,
1662         .associate = wpa_driver_hostap_associate,
1663         .init = wpa_driver_hostap_init,
1664         .deinit = wpa_driver_hostap_deinit,
1665         .set_operstate = wpa_driver_hostap_set_operstate,
1666 #endif /* HOSTAPD */
1667 };