The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1 | /* |
| 2 | * WPA Supplicant - driver interaction with generic Linux Wireless Extensions |
| 3 | * Copyright (c) 2003-2007, 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 | * This file implements a driver interface for the Linux Wireless Extensions. |
| 15 | * When used with WE-18 or newer, this interface can be used as-is with number |
| 16 | * of drivers. In addition to this, some of the common functions in this file |
| 17 | * can be used by other driver interface implementations that use generic WE |
| 18 | * ioctls, but require private ioctls for some of the functionality. |
| 19 | */ |
| 20 | |
| 21 | #include "includes.h" |
| 22 | #include <sys/ioctl.h> |
| 23 | #include <net/if_arp.h> |
Dmitry Shmidt | cc4db60 | 2009-05-06 08:50:56 -0700 | [diff] [blame] | 24 | #include <net/if.h> |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 25 | |
| 26 | #include "wireless_copy.h" |
| 27 | #include "common.h" |
| 28 | #include "driver.h" |
| 29 | #include "l2_packet.h" |
| 30 | #include "eloop.h" |
| 31 | #include "wpa_supplicant.h" |
| 32 | #include "priv_netlink.h" |
| 33 | #include "driver_wext.h" |
| 34 | #include "wpa.h" |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 35 | #include "wpa_ctrl.h" |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 36 | #include "wpa_supplicant_i.h" |
| 37 | #include "config_ssid.h" |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 38 | |
| 39 | #ifdef CONFIG_CLIENT_MLME |
| 40 | #include <netpacket/packet.h> |
| 41 | #include <hostapd_ioctl.h> |
| 42 | #include <ieee80211_common.h> |
| 43 | /* from net/mac80211.h */ |
| 44 | enum { |
| 45 | MODE_IEEE80211A = 0 /* IEEE 802.11a */, |
| 46 | MODE_IEEE80211B = 1 /* IEEE 802.11b only */, |
| 47 | MODE_ATHEROS_TURBO = 2 /* Atheros Turbo mode (2x.11a at 5 GHz) */, |
| 48 | MODE_IEEE80211G = 3 /* IEEE 802.11g (and 802.11b compatibility) */, |
| 49 | MODE_ATHEROS_TURBOG = 4 /* Atheros Turbo mode (2x.11g at 2.4 GHz) */, |
| 50 | NUM_IEEE80211_MODES = 5 |
| 51 | }; |
| 52 | |
| 53 | #include "mlme.h" |
| 54 | |
| 55 | #ifndef ETH_P_ALL |
| 56 | #define ETH_P_ALL 0x0003 |
| 57 | #endif |
| 58 | #endif /* CONFIG_CLIENT_MLME */ |
| 59 | |
| 60 | |
| 61 | struct wpa_driver_wext_data { |
| 62 | void *ctx; |
| 63 | int event_sock; |
| 64 | int ioctl_sock; |
| 65 | int mlme_sock; |
| 66 | char ifname[IFNAMSIZ + 1]; |
| 67 | int ifindex; |
| 68 | int ifindex2; |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 69 | int if_removed; |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 70 | u8 *assoc_req_ies; |
| 71 | size_t assoc_req_ies_len; |
| 72 | u8 *assoc_resp_ies; |
| 73 | size_t assoc_resp_ies_len; |
| 74 | struct wpa_driver_capa capa; |
| 75 | int has_capability; |
| 76 | int we_version_compiled; |
| 77 | |
| 78 | /* for set_auth_alg fallback */ |
| 79 | int use_crypt; |
| 80 | int auth_alg_fallback; |
| 81 | |
| 82 | int operstate; |
| 83 | |
| 84 | char mlmedev[IFNAMSIZ + 1]; |
| 85 | |
| 86 | int scan_complete_events; |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 87 | int errors; |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | |
| 91 | static int wpa_driver_wext_flush_pmkid(void *priv); |
| 92 | static int wpa_driver_wext_get_range(void *priv); |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 93 | static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv); |
| 94 | |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 95 | |
| 96 | static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv, |
| 97 | int linkmode, int operstate) |
| 98 | { |
| 99 | struct { |
| 100 | struct nlmsghdr hdr; |
| 101 | struct ifinfomsg ifinfo; |
| 102 | char opts[16]; |
| 103 | } req; |
| 104 | struct rtattr *rta; |
| 105 | static int nl_seq; |
| 106 | ssize_t ret; |
| 107 | |
| 108 | req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
| 109 | req.hdr.nlmsg_type = RTM_SETLINK; |
| 110 | req.hdr.nlmsg_flags = NLM_F_REQUEST; |
| 111 | req.hdr.nlmsg_seq = ++nl_seq; |
| 112 | req.hdr.nlmsg_pid = 0; |
| 113 | |
| 114 | req.ifinfo.ifi_family = AF_UNSPEC; |
| 115 | req.ifinfo.ifi_type = 0; |
| 116 | req.ifinfo.ifi_index = drv->ifindex; |
| 117 | req.ifinfo.ifi_flags = 0; |
| 118 | req.ifinfo.ifi_change = 0; |
| 119 | |
| 120 | if (linkmode != -1) { |
| 121 | rta = (struct rtattr *) |
| 122 | ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)); |
| 123 | rta->rta_type = IFLA_LINKMODE; |
| 124 | rta->rta_len = RTA_LENGTH(sizeof(char)); |
| 125 | *((char *) RTA_DATA(rta)) = linkmode; |
| 126 | req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) + |
| 127 | RTA_LENGTH(sizeof(char)); |
| 128 | } |
| 129 | if (operstate != -1) { |
| 130 | rta = (struct rtattr *) |
| 131 | ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)); |
| 132 | rta->rta_type = IFLA_OPERSTATE; |
| 133 | rta->rta_len = RTA_LENGTH(sizeof(char)); |
| 134 | *((char *) RTA_DATA(rta)) = operstate; |
| 135 | req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) + |
| 136 | RTA_LENGTH(sizeof(char)); |
| 137 | } |
| 138 | |
| 139 | wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d", |
| 140 | linkmode, operstate); |
| 141 | |
| 142 | ret = send(drv->event_sock, &req, req.hdr.nlmsg_len, 0); |
| 143 | if (ret < 0) { |
| 144 | wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: " |
| 145 | "%s (assume operstate is not supported)", |
| 146 | strerror(errno)); |
| 147 | } |
| 148 | |
| 149 | return ret < 0 ? -1 : 0; |
| 150 | } |
| 151 | |
| 152 | |
| 153 | static int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv, |
| 154 | int idx, u32 value) |
| 155 | { |
| 156 | struct iwreq iwr; |
| 157 | int ret = 0; |
| 158 | |
| 159 | os_memset(&iwr, 0, sizeof(iwr)); |
| 160 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 161 | iwr.u.param.flags = idx & IW_AUTH_INDEX; |
| 162 | iwr.u.param.value = value; |
| 163 | |
| 164 | if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) { |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 165 | if (errno != EOPNOTSUPP) { |
| 166 | wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d " |
| 167 | "value 0x%x) failed: %s)", |
| 168 | idx, value, strerror(errno)); |
| 169 | } |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 170 | ret = errno == EOPNOTSUPP ? -2 : -1; |
| 171 | } |
| 172 | |
| 173 | return ret; |
| 174 | } |
| 175 | |
| 176 | |
| 177 | /** |
| 178 | * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP |
| 179 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 180 | * @bssid: Buffer for BSSID |
| 181 | * Returns: 0 on success, -1 on failure |
| 182 | */ |
| 183 | int wpa_driver_wext_get_bssid(void *priv, u8 *bssid) |
| 184 | { |
| 185 | struct wpa_driver_wext_data *drv = priv; |
| 186 | struct iwreq iwr; |
| 187 | int ret = 0; |
| 188 | |
| 189 | os_memset(&iwr, 0, sizeof(iwr)); |
| 190 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 191 | |
| 192 | if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) { |
| 193 | perror("ioctl[SIOCGIWAP]"); |
| 194 | ret = -1; |
| 195 | } |
| 196 | os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN); |
| 197 | |
| 198 | return ret; |
| 199 | } |
| 200 | |
| 201 | |
| 202 | /** |
| 203 | * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP |
| 204 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 205 | * @bssid: BSSID |
| 206 | * Returns: 0 on success, -1 on failure |
| 207 | */ |
| 208 | int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid) |
| 209 | { |
| 210 | struct wpa_driver_wext_data *drv = priv; |
| 211 | struct iwreq iwr; |
| 212 | int ret = 0; |
| 213 | |
| 214 | os_memset(&iwr, 0, sizeof(iwr)); |
| 215 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 216 | iwr.u.ap_addr.sa_family = ARPHRD_ETHER; |
| 217 | if (bssid) |
| 218 | os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN); |
| 219 | else |
| 220 | os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN); |
| 221 | |
| 222 | if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) { |
| 223 | perror("ioctl[SIOCSIWAP]"); |
| 224 | ret = -1; |
| 225 | } |
| 226 | |
| 227 | return ret; |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /** |
| 232 | * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID |
| 233 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 234 | * @ssid: Buffer for the SSID; must be at least 32 bytes long |
| 235 | * Returns: SSID length on success, -1 on failure |
| 236 | */ |
| 237 | int wpa_driver_wext_get_ssid(void *priv, u8 *ssid) |
| 238 | { |
| 239 | struct wpa_driver_wext_data *drv = priv; |
| 240 | struct iwreq iwr; |
| 241 | int ret = 0; |
| 242 | |
| 243 | os_memset(&iwr, 0, sizeof(iwr)); |
| 244 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 245 | iwr.u.essid.pointer = (caddr_t) ssid; |
| 246 | iwr.u.essid.length = 32; |
| 247 | |
| 248 | if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) { |
| 249 | perror("ioctl[SIOCGIWESSID]"); |
| 250 | ret = -1; |
| 251 | } else { |
| 252 | ret = iwr.u.essid.length; |
| 253 | if (ret > 32) |
| 254 | ret = 32; |
| 255 | /* Some drivers include nul termination in the SSID, so let's |
| 256 | * remove it here before further processing. WE-21 changes this |
| 257 | * to explicitly require the length _not_ to include nul |
| 258 | * termination. */ |
| 259 | if (ret > 0 && ssid[ret - 1] == '\0' && |
| 260 | drv->we_version_compiled < 21) |
| 261 | ret--; |
| 262 | } |
| 263 | |
| 264 | return ret; |
| 265 | } |
| 266 | |
| 267 | |
| 268 | /** |
| 269 | * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID |
| 270 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 271 | * @ssid: SSID |
| 272 | * @ssid_len: Length of SSID (0..32) |
| 273 | * Returns: 0 on success, -1 on failure |
| 274 | */ |
| 275 | int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len) |
| 276 | { |
| 277 | struct wpa_driver_wext_data *drv = priv; |
| 278 | struct iwreq iwr; |
| 279 | int ret = 0; |
| 280 | char buf[33]; |
| 281 | |
| 282 | if (ssid_len > 32) |
| 283 | return -1; |
| 284 | |
| 285 | os_memset(&iwr, 0, sizeof(iwr)); |
| 286 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 287 | /* flags: 1 = ESSID is active, 0 = not (promiscuous) */ |
| 288 | iwr.u.essid.flags = (ssid_len != 0); |
| 289 | os_memset(buf, 0, sizeof(buf)); |
| 290 | os_memcpy(buf, ssid, ssid_len); |
| 291 | iwr.u.essid.pointer = (caddr_t) buf; |
| 292 | if (drv->we_version_compiled < 21) { |
| 293 | /* For historic reasons, set SSID length to include one extra |
| 294 | * character, C string nul termination, even though SSID is |
| 295 | * really an octet string that should not be presented as a C |
| 296 | * string. Some Linux drivers decrement the length by one and |
| 297 | * can thus end up missing the last octet of the SSID if the |
| 298 | * length is not incremented here. WE-21 changes this to |
| 299 | * explicitly require the length _not_ to include nul |
| 300 | * termination. */ |
| 301 | if (ssid_len) |
| 302 | ssid_len++; |
| 303 | } |
| 304 | iwr.u.essid.length = ssid_len; |
| 305 | |
| 306 | if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) { |
| 307 | perror("ioctl[SIOCSIWESSID]"); |
| 308 | ret = -1; |
| 309 | } |
| 310 | |
| 311 | return ret; |
| 312 | } |
| 313 | |
| 314 | |
| 315 | /** |
| 316 | * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ |
| 317 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 318 | * @freq: Frequency in MHz |
| 319 | * Returns: 0 on success, -1 on failure |
| 320 | */ |
| 321 | int wpa_driver_wext_set_freq(void *priv, int freq) |
| 322 | { |
| 323 | struct wpa_driver_wext_data *drv = priv; |
| 324 | struct iwreq iwr; |
| 325 | int ret = 0; |
| 326 | |
| 327 | os_memset(&iwr, 0, sizeof(iwr)); |
| 328 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 329 | iwr.u.freq.m = freq * 100000; |
| 330 | iwr.u.freq.e = 1; |
| 331 | |
| 332 | if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) { |
| 333 | perror("ioctl[SIOCSIWFREQ]"); |
| 334 | ret = -1; |
| 335 | } |
| 336 | |
| 337 | return ret; |
| 338 | } |
| 339 | |
| 340 | |
| 341 | static void |
| 342 | wpa_driver_wext_event_wireless_custom(void *ctx, char *custom) |
| 343 | { |
| 344 | union wpa_event_data data; |
| 345 | |
| 346 | wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'", |
| 347 | custom); |
| 348 | |
| 349 | os_memset(&data, 0, sizeof(data)); |
| 350 | /* Host AP driver */ |
| 351 | if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) { |
| 352 | data.michael_mic_failure.unicast = |
| 353 | os_strstr(custom, " unicast ") != NULL; |
| 354 | /* TODO: parse parameters(?) */ |
| 355 | wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data); |
| 356 | } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) { |
| 357 | char *spos; |
| 358 | int bytes; |
| 359 | |
| 360 | spos = custom + 17; |
| 361 | |
| 362 | bytes = strspn(spos, "0123456789abcdefABCDEF"); |
| 363 | if (!bytes || (bytes & 1)) |
| 364 | return; |
| 365 | bytes /= 2; |
| 366 | |
| 367 | data.assoc_info.req_ies = os_malloc(bytes); |
| 368 | if (data.assoc_info.req_ies == NULL) |
| 369 | return; |
| 370 | |
| 371 | data.assoc_info.req_ies_len = bytes; |
| 372 | hexstr2bin(spos, data.assoc_info.req_ies, bytes); |
| 373 | |
| 374 | spos += bytes * 2; |
| 375 | |
| 376 | data.assoc_info.resp_ies = NULL; |
| 377 | data.assoc_info.resp_ies_len = 0; |
| 378 | |
| 379 | if (os_strncmp(spos, " RespIEs=", 9) == 0) { |
| 380 | spos += 9; |
| 381 | |
| 382 | bytes = strspn(spos, "0123456789abcdefABCDEF"); |
| 383 | if (!bytes || (bytes & 1)) |
| 384 | goto done; |
| 385 | bytes /= 2; |
| 386 | |
| 387 | data.assoc_info.resp_ies = os_malloc(bytes); |
| 388 | if (data.assoc_info.resp_ies == NULL) |
| 389 | goto done; |
| 390 | |
| 391 | data.assoc_info.resp_ies_len = bytes; |
| 392 | hexstr2bin(spos, data.assoc_info.resp_ies, bytes); |
| 393 | } |
| 394 | |
| 395 | wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data); |
| 396 | |
| 397 | done: |
| 398 | os_free(data.assoc_info.resp_ies); |
| 399 | os_free(data.assoc_info.req_ies); |
| 400 | #ifdef CONFIG_PEERKEY |
| 401 | } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) { |
| 402 | if (hwaddr_aton(custom + 17, data.stkstart.peer)) { |
| 403 | wpa_printf(MSG_DEBUG, "WEXT: unrecognized " |
| 404 | "STKSTART.request '%s'", custom + 17); |
| 405 | return; |
| 406 | } |
| 407 | wpa_supplicant_event(ctx, EVENT_STKSTART, &data); |
| 408 | #endif /* CONFIG_PEERKEY */ |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 409 | #ifdef ANDROID |
| 410 | } else if (os_strncmp(custom, "STOP", 4) == 0) { |
| 411 | wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED"); |
| 412 | } else if (os_strncmp(custom, "START", 5) == 0) { |
| 413 | wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED"); |
| 414 | #endif /* ANDROID */ |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 415 | } |
| 416 | } |
| 417 | |
| 418 | |
| 419 | static int wpa_driver_wext_event_wireless_michaelmicfailure( |
| 420 | void *ctx, const char *ev, size_t len) |
| 421 | { |
| 422 | const struct iw_michaelmicfailure *mic; |
| 423 | union wpa_event_data data; |
| 424 | |
| 425 | if (len < sizeof(*mic)) |
| 426 | return -1; |
| 427 | |
| 428 | mic = (const struct iw_michaelmicfailure *) ev; |
| 429 | |
| 430 | wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: " |
| 431 | "flags=0x%x src_addr=" MACSTR, mic->flags, |
| 432 | MAC2STR(mic->src_addr.sa_data)); |
| 433 | |
| 434 | os_memset(&data, 0, sizeof(data)); |
| 435 | data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP); |
| 436 | wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data); |
| 437 | |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | |
| 442 | static int wpa_driver_wext_event_wireless_pmkidcand( |
| 443 | struct wpa_driver_wext_data *drv, const char *ev, size_t len) |
| 444 | { |
| 445 | const struct iw_pmkid_cand *cand; |
| 446 | union wpa_event_data data; |
| 447 | const u8 *addr; |
| 448 | |
| 449 | if (len < sizeof(*cand)) |
| 450 | return -1; |
| 451 | |
| 452 | cand = (const struct iw_pmkid_cand *) ev; |
| 453 | addr = (const u8 *) cand->bssid.sa_data; |
| 454 | |
| 455 | wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: " |
| 456 | "flags=0x%x index=%d bssid=" MACSTR, cand->flags, |
| 457 | cand->index, MAC2STR(addr)); |
| 458 | |
| 459 | os_memset(&data, 0, sizeof(data)); |
| 460 | os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN); |
| 461 | data.pmkid_candidate.index = cand->index; |
| 462 | data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH; |
| 463 | wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); |
| 464 | |
| 465 | return 0; |
| 466 | } |
| 467 | |
| 468 | |
| 469 | static int wpa_driver_wext_event_wireless_assocreqie( |
| 470 | struct wpa_driver_wext_data *drv, const char *ev, int len) |
| 471 | { |
| 472 | if (len < 0) |
| 473 | return -1; |
| 474 | |
| 475 | wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev, |
| 476 | len); |
| 477 | os_free(drv->assoc_req_ies); |
| 478 | drv->assoc_req_ies = os_malloc(len); |
| 479 | if (drv->assoc_req_ies == NULL) { |
| 480 | drv->assoc_req_ies_len = 0; |
| 481 | return -1; |
| 482 | } |
| 483 | os_memcpy(drv->assoc_req_ies, ev, len); |
| 484 | drv->assoc_req_ies_len = len; |
| 485 | |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | |
| 490 | static int wpa_driver_wext_event_wireless_assocrespie( |
| 491 | struct wpa_driver_wext_data *drv, const char *ev, int len) |
| 492 | { |
| 493 | if (len < 0) |
| 494 | return -1; |
| 495 | |
| 496 | wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev, |
| 497 | len); |
| 498 | os_free(drv->assoc_resp_ies); |
| 499 | drv->assoc_resp_ies = os_malloc(len); |
| 500 | if (drv->assoc_resp_ies == NULL) { |
| 501 | drv->assoc_resp_ies_len = 0; |
| 502 | return -1; |
| 503 | } |
| 504 | os_memcpy(drv->assoc_resp_ies, ev, len); |
| 505 | drv->assoc_resp_ies_len = len; |
| 506 | |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | |
| 511 | static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv) |
| 512 | { |
| 513 | union wpa_event_data data; |
| 514 | |
| 515 | if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL) |
| 516 | return; |
| 517 | |
| 518 | os_memset(&data, 0, sizeof(data)); |
| 519 | if (drv->assoc_req_ies) { |
| 520 | data.assoc_info.req_ies = drv->assoc_req_ies; |
| 521 | drv->assoc_req_ies = NULL; |
| 522 | data.assoc_info.req_ies_len = drv->assoc_req_ies_len; |
| 523 | } |
| 524 | if (drv->assoc_resp_ies) { |
| 525 | data.assoc_info.resp_ies = drv->assoc_resp_ies; |
| 526 | drv->assoc_resp_ies = NULL; |
| 527 | data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len; |
| 528 | } |
| 529 | |
| 530 | wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data); |
| 531 | |
| 532 | os_free(data.assoc_info.req_ies); |
| 533 | os_free(data.assoc_info.resp_ies); |
| 534 | } |
| 535 | |
| 536 | |
| 537 | static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv, |
| 538 | void *ctx, char *data, int len) |
| 539 | { |
| 540 | struct iw_event iwe_buf, *iwe = &iwe_buf; |
| 541 | char *pos, *end, *custom, *buf; |
| 542 | |
| 543 | pos = data; |
| 544 | end = data + len; |
| 545 | |
| 546 | while (pos + IW_EV_LCP_LEN <= end) { |
| 547 | /* Event data may be unaligned, so make a local, aligned copy |
| 548 | * before processing. */ |
| 549 | os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN); |
| 550 | wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d", |
| 551 | iwe->cmd, iwe->len); |
| 552 | if (iwe->len <= IW_EV_LCP_LEN) |
| 553 | return; |
| 554 | |
| 555 | custom = pos + IW_EV_POINT_LEN; |
| 556 | if (drv->we_version_compiled > 18 && |
| 557 | (iwe->cmd == IWEVMICHAELMICFAILURE || |
| 558 | iwe->cmd == IWEVCUSTOM || |
| 559 | iwe->cmd == IWEVASSOCREQIE || |
| 560 | iwe->cmd == IWEVASSOCRESPIE || |
| 561 | iwe->cmd == IWEVPMKIDCAND)) { |
| 562 | /* WE-19 removed the pointer from struct iw_point */ |
| 563 | char *dpos = (char *) &iwe_buf.u.data.length; |
| 564 | int dlen = dpos - (char *) &iwe_buf; |
| 565 | os_memcpy(dpos, pos + IW_EV_LCP_LEN, |
| 566 | sizeof(struct iw_event) - dlen); |
| 567 | } else { |
| 568 | os_memcpy(&iwe_buf, pos, sizeof(struct iw_event)); |
| 569 | custom += IW_EV_POINT_OFF; |
| 570 | } |
| 571 | |
| 572 | switch (iwe->cmd) { |
| 573 | case SIOCGIWAP: |
| 574 | wpa_printf(MSG_DEBUG, "Wireless event: new AP: " |
| 575 | MACSTR, |
| 576 | MAC2STR((u8 *) iwe->u.ap_addr.sa_data)); |
| 577 | if (os_memcmp(iwe->u.ap_addr.sa_data, |
| 578 | "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == |
| 579 | 0 || |
| 580 | os_memcmp(iwe->u.ap_addr.sa_data, |
| 581 | "\x44\x44\x44\x44\x44\x44", ETH_ALEN) == |
| 582 | 0) { |
| 583 | os_free(drv->assoc_req_ies); |
| 584 | drv->assoc_req_ies = NULL; |
| 585 | os_free(drv->assoc_resp_ies); |
| 586 | drv->assoc_resp_ies = NULL; |
| 587 | wpa_supplicant_event(ctx, EVENT_DISASSOC, |
| 588 | NULL); |
| 589 | |
| 590 | } else { |
| 591 | wpa_driver_wext_event_assoc_ies(drv); |
| 592 | wpa_supplicant_event(ctx, EVENT_ASSOC, NULL); |
| 593 | } |
| 594 | break; |
| 595 | case IWEVMICHAELMICFAILURE: |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 596 | if (custom + iwe->u.data.length > end) { |
| 597 | wpa_printf(MSG_DEBUG, "WEXT: Invalid " |
| 598 | "IWEVMICHAELMICFAILURE length"); |
| 599 | return; |
| 600 | } |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 601 | wpa_driver_wext_event_wireless_michaelmicfailure( |
| 602 | ctx, custom, iwe->u.data.length); |
| 603 | break; |
| 604 | case IWEVCUSTOM: |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 605 | if (custom + iwe->u.data.length > end) { |
| 606 | wpa_printf(MSG_DEBUG, "WEXT: Invalid " |
| 607 | "IWEVCUSTOM length"); |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 608 | return; |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 609 | } |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 610 | buf = os_malloc(iwe->u.data.length + 1); |
| 611 | if (buf == NULL) |
| 612 | return; |
| 613 | os_memcpy(buf, custom, iwe->u.data.length); |
| 614 | buf[iwe->u.data.length] = '\0'; |
| 615 | wpa_driver_wext_event_wireless_custom(ctx, buf); |
| 616 | os_free(buf); |
| 617 | break; |
| 618 | case SIOCGIWSCAN: |
| 619 | drv->scan_complete_events = 1; |
| 620 | eloop_cancel_timeout(wpa_driver_wext_scan_timeout, |
| 621 | drv, ctx); |
| 622 | wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL); |
| 623 | break; |
| 624 | case IWEVASSOCREQIE: |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 625 | if (custom + iwe->u.data.length > end) { |
| 626 | wpa_printf(MSG_DEBUG, "WEXT: Invalid " |
| 627 | "IWEVASSOCREQIE length"); |
| 628 | return; |
| 629 | } |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 630 | wpa_driver_wext_event_wireless_assocreqie( |
| 631 | drv, custom, iwe->u.data.length); |
| 632 | break; |
| 633 | case IWEVASSOCRESPIE: |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 634 | if (custom + iwe->u.data.length > end) { |
| 635 | wpa_printf(MSG_DEBUG, "WEXT: Invalid " |
| 636 | "IWEVASSOCRESPIE length"); |
| 637 | return; |
| 638 | } |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 639 | wpa_driver_wext_event_wireless_assocrespie( |
| 640 | drv, custom, iwe->u.data.length); |
| 641 | break; |
| 642 | case IWEVPMKIDCAND: |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 643 | if (custom + iwe->u.data.length > end) { |
| 644 | wpa_printf(MSG_DEBUG, "WEXT: Invalid " |
| 645 | "IWEVPMKIDCAND length"); |
| 646 | return; |
| 647 | } |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 648 | wpa_driver_wext_event_wireless_pmkidcand( |
| 649 | drv, custom, iwe->u.data.length); |
| 650 | break; |
| 651 | } |
| 652 | |
| 653 | pos += iwe->len; |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 658 | static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv, |
| 659 | void *ctx, char *buf, size_t len, |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 660 | int del) |
| 661 | { |
| 662 | union wpa_event_data event; |
| 663 | |
| 664 | os_memset(&event, 0, sizeof(event)); |
| 665 | if (len > sizeof(event.interface_status.ifname)) |
| 666 | len = sizeof(event.interface_status.ifname) - 1; |
| 667 | os_memcpy(event.interface_status.ifname, buf, len); |
| 668 | event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : |
| 669 | EVENT_INTERFACE_ADDED; |
| 670 | |
| 671 | wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", |
| 672 | del ? "DEL" : "NEW", |
| 673 | event.interface_status.ifname, |
| 674 | del ? "removed" : "added"); |
| 675 | |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 676 | if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) { |
| 677 | if (del) |
| 678 | drv->if_removed = 1; |
| 679 | else |
| 680 | drv->if_removed = 0; |
| 681 | } |
| 682 | |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 683 | wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event); |
| 684 | } |
| 685 | |
| 686 | |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 687 | static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv, |
| 688 | struct nlmsghdr *h) |
| 689 | { |
| 690 | struct ifinfomsg *ifi; |
| 691 | int attrlen, nlmsg_len, rta_len; |
| 692 | struct rtattr *attr; |
| 693 | |
| 694 | ifi = NLMSG_DATA(h); |
| 695 | |
| 696 | nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg)); |
| 697 | |
| 698 | attrlen = h->nlmsg_len - nlmsg_len; |
| 699 | if (attrlen < 0) |
| 700 | return 0; |
| 701 | |
| 702 | attr = (struct rtattr *) (((char *) ifi) + nlmsg_len); |
| 703 | |
| 704 | rta_len = RTA_ALIGN(sizeof(struct rtattr)); |
| 705 | while (RTA_OK(attr, attrlen)) { |
| 706 | if (attr->rta_type == IFLA_IFNAME) { |
| 707 | if (os_strcmp(((char *) attr) + rta_len, drv->ifname) |
| 708 | == 0) |
| 709 | return 1; |
| 710 | else |
| 711 | break; |
| 712 | } |
| 713 | attr = RTA_NEXT(attr, attrlen); |
| 714 | } |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
| 719 | |
| 720 | static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv, |
| 721 | int ifindex, struct nlmsghdr *h) |
| 722 | { |
| 723 | if (drv->ifindex == ifindex || drv->ifindex2 == ifindex) |
| 724 | return 1; |
| 725 | |
| 726 | if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) { |
| 727 | drv->ifindex = if_nametoindex(drv->ifname); |
| 728 | wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed " |
| 729 | "interface"); |
| 730 | wpa_driver_wext_finish_drv_init(drv); |
| 731 | return 1; |
| 732 | } |
| 733 | |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 738 | static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv, |
| 739 | void *ctx, struct nlmsghdr *h, |
| 740 | size_t len) |
| 741 | { |
| 742 | struct ifinfomsg *ifi; |
| 743 | int attrlen, nlmsg_len, rta_len; |
| 744 | struct rtattr * attr; |
| 745 | |
| 746 | if (len < sizeof(*ifi)) |
| 747 | return; |
| 748 | |
| 749 | ifi = NLMSG_DATA(h); |
| 750 | |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 751 | if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) { |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 752 | wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d", |
| 753 | ifi->ifi_index); |
| 754 | return; |
| 755 | } |
| 756 | |
| 757 | wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " |
| 758 | "(%s%s%s%s)", |
| 759 | drv->operstate, ifi->ifi_flags, |
| 760 | (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", |
| 761 | (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", |
| 762 | (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 763 | (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 764 | /* |
| 765 | * Some drivers send the association event before the operup event--in |
| 766 | * this case, lifting operstate in wpa_driver_wext_set_operstate() |
| 767 | * fails. This will hit us when wpa_supplicant does not need to do |
| 768 | * IEEE 802.1X authentication |
| 769 | */ |
| 770 | if (drv->operstate == 1 && |
| 771 | (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && |
| 772 | !(ifi->ifi_flags & IFF_RUNNING)) |
| 773 | wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP); |
| 774 | |
| 775 | nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg)); |
| 776 | |
| 777 | attrlen = h->nlmsg_len - nlmsg_len; |
| 778 | if (attrlen < 0) |
| 779 | return; |
| 780 | |
| 781 | attr = (struct rtattr *) (((char *) ifi) + nlmsg_len); |
| 782 | |
| 783 | rta_len = RTA_ALIGN(sizeof(struct rtattr)); |
| 784 | while (RTA_OK(attr, attrlen)) { |
| 785 | if (attr->rta_type == IFLA_WIRELESS) { |
| 786 | wpa_driver_wext_event_wireless( |
| 787 | drv, ctx, ((char *) attr) + rta_len, |
| 788 | attr->rta_len - rta_len); |
| 789 | } else if (attr->rta_type == IFLA_IFNAME) { |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 790 | wpa_driver_wext_event_link(drv, ctx, |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 791 | ((char *) attr) + rta_len, |
| 792 | attr->rta_len - rta_len, 0); |
| 793 | } |
| 794 | attr = RTA_NEXT(attr, attrlen); |
| 795 | } |
| 796 | } |
| 797 | |
| 798 | |
| 799 | static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv, |
| 800 | void *ctx, struct nlmsghdr *h, |
| 801 | size_t len) |
| 802 | { |
| 803 | struct ifinfomsg *ifi; |
| 804 | int attrlen, nlmsg_len, rta_len; |
| 805 | struct rtattr * attr; |
| 806 | |
| 807 | if (len < sizeof(*ifi)) |
| 808 | return; |
| 809 | |
| 810 | ifi = NLMSG_DATA(h); |
| 811 | |
| 812 | nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg)); |
| 813 | |
| 814 | attrlen = h->nlmsg_len - nlmsg_len; |
| 815 | if (attrlen < 0) |
| 816 | return; |
| 817 | |
| 818 | attr = (struct rtattr *) (((char *) ifi) + nlmsg_len); |
| 819 | |
| 820 | rta_len = RTA_ALIGN(sizeof(struct rtattr)); |
| 821 | while (RTA_OK(attr, attrlen)) { |
| 822 | if (attr->rta_type == IFLA_IFNAME) { |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 823 | wpa_driver_wext_event_link(drv, ctx, |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 824 | ((char *) attr) + rta_len, |
| 825 | attr->rta_len - rta_len, 1); |
| 826 | } |
| 827 | attr = RTA_NEXT(attr, attrlen); |
| 828 | } |
| 829 | } |
| 830 | |
| 831 | |
| 832 | static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx, |
| 833 | void *sock_ctx) |
| 834 | { |
| 835 | char buf[8192]; |
| 836 | int left; |
| 837 | struct sockaddr_nl from; |
| 838 | socklen_t fromlen; |
| 839 | struct nlmsghdr *h; |
| 840 | int max_events = 10; |
| 841 | |
| 842 | try_again: |
| 843 | fromlen = sizeof(from); |
| 844 | left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT, |
| 845 | (struct sockaddr *) &from, &fromlen); |
| 846 | if (left < 0) { |
| 847 | if (errno != EINTR && errno != EAGAIN) |
| 848 | perror("recvfrom(netlink)"); |
| 849 | return; |
| 850 | } |
| 851 | |
| 852 | h = (struct nlmsghdr *) buf; |
| 853 | while (left >= (int) sizeof(*h)) { |
| 854 | int len, plen; |
| 855 | |
| 856 | len = h->nlmsg_len; |
| 857 | plen = len - sizeof(*h); |
| 858 | if (len > left || plen < 0) { |
| 859 | wpa_printf(MSG_DEBUG, "Malformed netlink message: " |
| 860 | "len=%d left=%d plen=%d", |
| 861 | len, left, plen); |
| 862 | break; |
| 863 | } |
| 864 | |
| 865 | switch (h->nlmsg_type) { |
| 866 | case RTM_NEWLINK: |
| 867 | wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx, |
| 868 | h, plen); |
| 869 | break; |
| 870 | case RTM_DELLINK: |
| 871 | wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx, |
| 872 | h, plen); |
| 873 | break; |
| 874 | } |
| 875 | |
| 876 | len = NLMSG_ALIGN(len); |
| 877 | left -= len; |
| 878 | h = (struct nlmsghdr *) ((char *) h + len); |
| 879 | } |
| 880 | |
| 881 | if (left > 0) { |
| 882 | wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink " |
| 883 | "message", left); |
| 884 | } |
| 885 | |
| 886 | if (--max_events > 0) { |
| 887 | /* |
| 888 | * Try to receive all events in one eloop call in order to |
| 889 | * limit race condition on cases where AssocInfo event, Assoc |
| 890 | * event, and EAPOL frames are received more or less at the |
| 891 | * same time. We want to process the event messages first |
| 892 | * before starting EAPOL processing. |
| 893 | */ |
| 894 | goto try_again; |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | |
| 899 | static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv, |
| 900 | const char *ifname, int *flags) |
| 901 | { |
| 902 | struct ifreq ifr; |
| 903 | |
| 904 | os_memset(&ifr, 0, sizeof(ifr)); |
| 905 | os_strncpy(ifr.ifr_name, ifname, IFNAMSIZ); |
| 906 | if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { |
| 907 | perror("ioctl[SIOCGIFFLAGS]"); |
| 908 | return -1; |
| 909 | } |
| 910 | *flags = ifr.ifr_flags & 0xffff; |
| 911 | return 0; |
| 912 | } |
| 913 | |
| 914 | |
| 915 | /** |
| 916 | * wpa_driver_wext_get_ifflags - Get interface flags (SIOCGIFFLAGS) |
| 917 | * @drv: driver_wext private data |
| 918 | * @flags: Pointer to returned flags value |
| 919 | * Returns: 0 on success, -1 on failure |
| 920 | */ |
| 921 | int wpa_driver_wext_get_ifflags(struct wpa_driver_wext_data *drv, int *flags) |
| 922 | { |
| 923 | return wpa_driver_wext_get_ifflags_ifname(drv, drv->ifname, flags); |
| 924 | } |
| 925 | |
| 926 | |
| 927 | static int wpa_driver_wext_set_ifflags_ifname(struct wpa_driver_wext_data *drv, |
| 928 | const char *ifname, int flags) |
| 929 | { |
| 930 | struct ifreq ifr; |
| 931 | |
| 932 | os_memset(&ifr, 0, sizeof(ifr)); |
| 933 | os_strncpy(ifr.ifr_name, ifname, IFNAMSIZ); |
| 934 | ifr.ifr_flags = flags & 0xffff; |
| 935 | if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { |
| 936 | perror("SIOCSIFFLAGS"); |
| 937 | return -1; |
| 938 | } |
| 939 | return 0; |
| 940 | } |
| 941 | |
| 942 | |
| 943 | /** |
| 944 | * wpa_driver_wext_set_ifflags - Set interface flags (SIOCSIFFLAGS) |
| 945 | * @drv: driver_wext private data |
| 946 | * @flags: New value for flags |
| 947 | * Returns: 0 on success, -1 on failure |
| 948 | */ |
| 949 | int wpa_driver_wext_set_ifflags(struct wpa_driver_wext_data *drv, int flags) |
| 950 | { |
| 951 | return wpa_driver_wext_set_ifflags_ifname(drv, drv->ifname, flags); |
| 952 | } |
| 953 | |
| 954 | |
| 955 | /** |
| 956 | * wpa_driver_wext_init - Initialize WE driver interface |
| 957 | * @ctx: context to be used when calling wpa_supplicant functions, |
| 958 | * e.g., wpa_supplicant_event() |
| 959 | * @ifname: interface name, e.g., wlan0 |
| 960 | * Returns: Pointer to private data, %NULL on failure |
| 961 | */ |
| 962 | void * wpa_driver_wext_init(void *ctx, const char *ifname) |
| 963 | { |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 964 | int s; |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 965 | struct sockaddr_nl local; |
| 966 | struct wpa_driver_wext_data *drv; |
| 967 | |
| 968 | drv = os_zalloc(sizeof(*drv)); |
| 969 | if (drv == NULL) |
| 970 | return NULL; |
| 971 | drv->ctx = ctx; |
| 972 | os_strncpy(drv->ifname, ifname, sizeof(drv->ifname)); |
| 973 | |
| 974 | drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); |
| 975 | if (drv->ioctl_sock < 0) { |
| 976 | perror("socket(PF_INET,SOCK_DGRAM)"); |
| 977 | os_free(drv); |
| 978 | return NULL; |
| 979 | } |
| 980 | |
| 981 | s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); |
| 982 | if (s < 0) { |
| 983 | perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)"); |
| 984 | close(drv->ioctl_sock); |
| 985 | os_free(drv); |
| 986 | return NULL; |
| 987 | } |
| 988 | |
| 989 | os_memset(&local, 0, sizeof(local)); |
| 990 | local.nl_family = AF_NETLINK; |
| 991 | local.nl_groups = RTMGRP_LINK; |
| 992 | if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) { |
| 993 | perror("bind(netlink)"); |
| 994 | close(s); |
| 995 | close(drv->ioctl_sock); |
| 996 | os_free(drv); |
| 997 | return NULL; |
| 998 | } |
| 999 | |
| 1000 | eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx); |
| 1001 | drv->event_sock = s; |
| 1002 | |
| 1003 | drv->mlme_sock = -1; |
| 1004 | |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 1005 | drv->errors = 0; |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 1006 | wpa_driver_wext_finish_drv_init(drv); |
| 1007 | |
| 1008 | return drv; |
| 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv) |
| 1013 | { |
| 1014 | int flags; |
| 1015 | |
Dmitry Shmidt | 4225524 | 2009-06-10 14:53:57 -0700 | [diff] [blame] | 1016 | if (wpa_driver_wext_get_ifflags(drv, &flags) != 0 || |
| 1017 | wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) { |
| 1018 | printf("Could not set interface '%s' UP\n", drv->ifname); |
| 1019 | } |
| 1020 | #ifdef ANDROID |
Dmitry Shmidt | 6114987 | 2009-08-20 12:10:19 -0700 | [diff] [blame] | 1021 | os_sleep(0, WPA_DRIVER_WEXT_WAIT_US); |
Dmitry Shmidt | 4225524 | 2009-06-10 14:53:57 -0700 | [diff] [blame] | 1022 | #endif |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1023 | /* |
| 1024 | * Make sure that the driver does not have any obsolete PMKID entries. |
| 1025 | */ |
| 1026 | wpa_driver_wext_flush_pmkid(drv); |
| 1027 | |
| 1028 | if (wpa_driver_wext_set_mode(drv, 0) < 0) { |
| 1029 | printf("Could not configure driver to use managed mode\n"); |
| 1030 | } |
| 1031 | |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1032 | wpa_driver_wext_get_range(drv); |
| 1033 | |
| 1034 | drv->ifindex = if_nametoindex(drv->ifname); |
| 1035 | |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 1036 | if (os_strncmp(drv->ifname, "wlan", 4) == 0) { |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1037 | /* |
| 1038 | * Host AP driver may use both wlan# and wifi# interface in |
| 1039 | * wireless events. Since some of the versions included WE-18 |
| 1040 | * support, let's add the alternative ifindex also from |
| 1041 | * driver_wext.c for the time being. This may be removed at |
| 1042 | * some point once it is believed that old versions of the |
| 1043 | * driver are not in use anymore. |
| 1044 | */ |
| 1045 | char ifname2[IFNAMSIZ + 1]; |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 1046 | os_strncpy(ifname2, drv->ifname, sizeof(ifname2)); |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1047 | os_memcpy(ifname2, "wifi", 4); |
| 1048 | wpa_driver_wext_alternative_ifindex(drv, ifname2); |
| 1049 | } |
| 1050 | |
| 1051 | wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT); |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | |
| 1055 | /** |
| 1056 | * wpa_driver_wext_deinit - Deinitialize WE driver interface |
| 1057 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 1058 | * |
| 1059 | * Shut down driver interface and processing of driver events. Free |
| 1060 | * private data buffer if one was allocated in wpa_driver_wext_init(). |
| 1061 | */ |
| 1062 | void wpa_driver_wext_deinit(void *priv) |
| 1063 | { |
| 1064 | struct wpa_driver_wext_data *drv = priv; |
| 1065 | int flags; |
| 1066 | |
| 1067 | eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx); |
| 1068 | |
| 1069 | /* |
| 1070 | * Clear possibly configured driver parameters in order to make it |
| 1071 | * easier to use the driver after wpa_supplicant has been terminated. |
| 1072 | */ |
| 1073 | wpa_driver_wext_set_bssid(drv, (u8 *) "\x00\x00\x00\x00\x00\x00"); |
| 1074 | |
| 1075 | wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP); |
| 1076 | |
| 1077 | eloop_unregister_read_sock(drv->event_sock); |
| 1078 | if (drv->mlme_sock >= 0) |
| 1079 | eloop_unregister_read_sock(drv->mlme_sock); |
| 1080 | |
| 1081 | if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) |
| 1082 | (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP); |
| 1083 | |
| 1084 | #ifdef CONFIG_CLIENT_MLME |
| 1085 | if (drv->mlmedev[0] && |
| 1086 | wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev, &flags) == 0) |
| 1087 | (void) wpa_driver_wext_set_ifflags_ifname(drv, drv->mlmedev, |
| 1088 | flags & ~IFF_UP); |
| 1089 | #endif /* CONFIG_CLIENT_MLME */ |
| 1090 | |
| 1091 | close(drv->event_sock); |
| 1092 | close(drv->ioctl_sock); |
| 1093 | if (drv->mlme_sock >= 0) |
| 1094 | close(drv->mlme_sock); |
| 1095 | os_free(drv->assoc_req_ies); |
| 1096 | os_free(drv->assoc_resp_ies); |
| 1097 | os_free(drv); |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | /** |
| 1102 | * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion |
| 1103 | * @eloop_ctx: Unused |
| 1104 | * @timeout_ctx: ctx argument given to wpa_driver_wext_init() |
| 1105 | * |
| 1106 | * This function can be used as registered timeout when starting a scan to |
| 1107 | * generate a scan completed event if the driver does not report this. |
| 1108 | */ |
| 1109 | void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx) |
| 1110 | { |
| 1111 | wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); |
| 1112 | wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); |
| 1113 | } |
| 1114 | |
| 1115 | |
| 1116 | /** |
| 1117 | * wpa_driver_wext_scan - Request the driver to initiate scan |
| 1118 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 1119 | * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for |
| 1120 | * all SSIDs (either active scan with broadcast SSID or passive |
| 1121 | * scan |
| 1122 | * @ssid_len: Length of the SSID |
| 1123 | * Returns: 0 on success, -1 on failure |
| 1124 | */ |
| 1125 | int wpa_driver_wext_scan(void *priv, const u8 *ssid, size_t ssid_len) |
| 1126 | { |
| 1127 | struct wpa_driver_wext_data *drv = priv; |
| 1128 | struct iwreq iwr; |
| 1129 | int ret = 0, timeout; |
| 1130 | struct iw_scan_req req; |
Dmitry Shmidt | 0ebb71c | 2009-11-17 09:52:44 -0800 | [diff] [blame] | 1131 | #ifdef ANDROID |
| 1132 | struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx); |
| 1133 | int scan_probe_flag = 0; |
| 1134 | #endif |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1135 | |
| 1136 | if (ssid_len > IW_ESSID_MAX_SIZE) { |
| 1137 | wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)", |
| 1138 | __FUNCTION__, (unsigned long) ssid_len); |
| 1139 | return -1; |
| 1140 | } |
| 1141 | |
| 1142 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1143 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1144 | |
Dmitry Shmidt | 0ebb71c | 2009-11-17 09:52:44 -0800 | [diff] [blame] | 1145 | #ifdef ANDROID |
| 1146 | if (wpa_s->prev_scan_ssid != BROADCAST_SSID_SCAN) { |
| 1147 | scan_probe_flag = wpa_s->prev_scan_ssid->scan_ssid; |
| 1148 | } |
| 1149 | if (scan_probe_flag && (ssid && ssid_len)) { |
| 1150 | #else |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1151 | if (ssid && ssid_len) { |
Dmitry Shmidt | 0ebb71c | 2009-11-17 09:52:44 -0800 | [diff] [blame] | 1152 | #endif |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1153 | os_memset(&req, 0, sizeof(req)); |
| 1154 | req.essid_len = ssid_len; |
| 1155 | req.bssid.sa_family = ARPHRD_ETHER; |
| 1156 | os_memset(req.bssid.sa_data, 0xff, ETH_ALEN); |
| 1157 | os_memcpy(req.essid, ssid, ssid_len); |
| 1158 | iwr.u.data.pointer = (caddr_t) &req; |
| 1159 | iwr.u.data.length = sizeof(req); |
| 1160 | iwr.u.data.flags = IW_SCAN_THIS_ESSID; |
| 1161 | } |
| 1162 | |
| 1163 | if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) { |
| 1164 | perror("ioctl[SIOCSIWSCAN]"); |
| 1165 | ret = -1; |
| 1166 | } |
| 1167 | |
| 1168 | /* Not all drivers generate "scan completed" wireless event, so try to |
| 1169 | * read results after a timeout. */ |
| 1170 | timeout = 5; |
| 1171 | if (drv->scan_complete_events) { |
| 1172 | /* |
| 1173 | * The driver seems to deliver SIOCGIWSCAN events to notify |
| 1174 | * when scan is complete, so use longer timeout to avoid race |
| 1175 | * conditions with scanning and following association request. |
| 1176 | */ |
| 1177 | timeout = 30; |
| 1178 | } |
| 1179 | wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " |
| 1180 | "seconds", ret, timeout); |
| 1181 | eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx); |
| 1182 | eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv, |
| 1183 | drv->ctx); |
| 1184 | |
| 1185 | return ret; |
| 1186 | } |
| 1187 | |
| 1188 | |
| 1189 | /* Compare function for sorting scan results. Return >0 if @b is considered |
| 1190 | * better. */ |
| 1191 | static int wpa_scan_result_compar(const void *a, const void *b) |
| 1192 | { |
| 1193 | const struct wpa_scan_result *wa = a; |
| 1194 | const struct wpa_scan_result *wb = b; |
| 1195 | |
| 1196 | /* WPA/WPA2 support preferred */ |
| 1197 | if ((wb->wpa_ie_len || wb->rsn_ie_len) && |
| 1198 | !(wa->wpa_ie_len || wa->rsn_ie_len)) |
| 1199 | return 1; |
| 1200 | if (!(wb->wpa_ie_len || wb->rsn_ie_len) && |
| 1201 | (wa->wpa_ie_len || wa->rsn_ie_len)) |
| 1202 | return -1; |
| 1203 | |
| 1204 | /* privacy support preferred */ |
| 1205 | if ((wa->caps & IEEE80211_CAP_PRIVACY) == 0 && |
| 1206 | (wb->caps & IEEE80211_CAP_PRIVACY)) |
| 1207 | return 1; |
| 1208 | if ((wa->caps & IEEE80211_CAP_PRIVACY) && |
| 1209 | (wb->caps & IEEE80211_CAP_PRIVACY) == 0) |
| 1210 | return -1; |
| 1211 | |
| 1212 | /* best/max rate preferred if signal level close enough XXX */ |
| 1213 | if (wa->maxrate != wb->maxrate && abs(wb->level - wa->level) < 5) |
| 1214 | return wb->maxrate - wa->maxrate; |
| 1215 | |
| 1216 | /* use freq for channel preference */ |
| 1217 | |
| 1218 | /* all things being equal, use signal level; if signal levels are |
| 1219 | * identical, use quality values since some drivers may only report |
| 1220 | * that value and leave the signal level zero */ |
| 1221 | if (wb->level == wa->level) |
| 1222 | return wb->qual - wa->qual; |
| 1223 | return wb->level - wa->level; |
| 1224 | } |
| 1225 | |
| 1226 | |
| 1227 | /** |
| 1228 | * wpa_driver_wext_get_scan_results - Fetch the latest scan results |
| 1229 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 1230 | * @results: Pointer to buffer for scan results |
| 1231 | * @max_size: Maximum number of entries (buffer size) |
| 1232 | * Returns: Number of scan result entries used on success, -1 on |
| 1233 | * failure |
| 1234 | * |
| 1235 | * If scan results include more than max_size BSSes, max_size will be |
| 1236 | * returned and the remaining entries will not be included in the |
| 1237 | * buffer. |
| 1238 | */ |
| 1239 | int wpa_driver_wext_get_scan_results(void *priv, |
| 1240 | struct wpa_scan_result *results, |
| 1241 | size_t max_size) |
| 1242 | { |
| 1243 | struct wpa_driver_wext_data *drv = priv; |
| 1244 | struct iwreq iwr; |
| 1245 | size_t ap_num = 0; |
| 1246 | int first, maxrate; |
| 1247 | u8 *res_buf; |
| 1248 | struct iw_event iwe_buf, *iwe = &iwe_buf; |
| 1249 | char *pos, *end, *custom, *genie, *gpos, *gend; |
| 1250 | struct iw_param p; |
| 1251 | size_t len, clen, res_buf_len; |
| 1252 | |
| 1253 | os_memset(results, 0, max_size * sizeof(struct wpa_scan_result)); |
Dmitry Shmidt | 6114987 | 2009-08-20 12:10:19 -0700 | [diff] [blame] | 1254 | #ifdef ANDROID |
| 1255 | /* To make sure correctly parse scan results which is impacted by wext |
| 1256 | * version, first check range->we_version, if it is default value (0), |
| 1257 | * update again here */ |
| 1258 | if (drv->we_version_compiled == 0) |
| 1259 | wpa_driver_wext_get_range(drv); |
| 1260 | #endif |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1261 | res_buf_len = IW_SCAN_MAX_DATA; |
| 1262 | for (;;) { |
| 1263 | res_buf = os_malloc(res_buf_len); |
| 1264 | if (res_buf == NULL) |
| 1265 | return -1; |
| 1266 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1267 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1268 | iwr.u.data.pointer = res_buf; |
| 1269 | iwr.u.data.length = res_buf_len; |
| 1270 | |
| 1271 | if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0) |
| 1272 | break; |
| 1273 | |
| 1274 | if (errno == E2BIG && res_buf_len < 100000) { |
| 1275 | os_free(res_buf); |
| 1276 | res_buf = NULL; |
| 1277 | res_buf_len *= 2; |
| 1278 | wpa_printf(MSG_DEBUG, "Scan results did not fit - " |
| 1279 | "trying larger buffer (%lu bytes)", |
| 1280 | (unsigned long) res_buf_len); |
| 1281 | } else { |
| 1282 | perror("ioctl[SIOCGIWSCAN]"); |
| 1283 | os_free(res_buf); |
| 1284 | return -1; |
| 1285 | } |
| 1286 | } |
| 1287 | |
| 1288 | len = iwr.u.data.length; |
| 1289 | ap_num = 0; |
| 1290 | first = 1; |
| 1291 | |
| 1292 | pos = (char *) res_buf; |
| 1293 | end = (char *) res_buf + len; |
| 1294 | |
| 1295 | while (pos + IW_EV_LCP_LEN <= end) { |
| 1296 | int ssid_len; |
| 1297 | /* Event data may be unaligned, so make a local, aligned copy |
| 1298 | * before processing. */ |
| 1299 | os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN); |
| 1300 | if (iwe->len <= IW_EV_LCP_LEN) |
| 1301 | break; |
| 1302 | |
| 1303 | custom = pos + IW_EV_POINT_LEN; |
| 1304 | if (drv->we_version_compiled > 18 && |
| 1305 | (iwe->cmd == SIOCGIWESSID || |
| 1306 | iwe->cmd == SIOCGIWENCODE || |
| 1307 | iwe->cmd == IWEVGENIE || |
| 1308 | iwe->cmd == IWEVCUSTOM)) { |
| 1309 | /* WE-19 removed the pointer from struct iw_point */ |
| 1310 | char *dpos = (char *) &iwe_buf.u.data.length; |
| 1311 | int dlen = dpos - (char *) &iwe_buf; |
| 1312 | os_memcpy(dpos, pos + IW_EV_LCP_LEN, |
| 1313 | sizeof(struct iw_event) - dlen); |
| 1314 | } else { |
| 1315 | os_memcpy(&iwe_buf, pos, sizeof(struct iw_event)); |
| 1316 | custom += IW_EV_POINT_OFF; |
| 1317 | } |
| 1318 | |
| 1319 | switch (iwe->cmd) { |
| 1320 | case SIOCGIWAP: |
| 1321 | if (!first) |
| 1322 | ap_num++; |
| 1323 | first = 0; |
| 1324 | if (ap_num < max_size) { |
| 1325 | os_memcpy(results[ap_num].bssid, |
| 1326 | iwe->u.ap_addr.sa_data, ETH_ALEN); |
| 1327 | } |
| 1328 | break; |
| 1329 | case SIOCGIWMODE: |
| 1330 | if (ap_num >= max_size) |
| 1331 | break; |
| 1332 | if (iwe->u.mode == IW_MODE_ADHOC) |
| 1333 | results[ap_num].caps |= IEEE80211_CAP_IBSS; |
| 1334 | else if (iwe->u.mode == IW_MODE_MASTER || |
| 1335 | iwe->u.mode == IW_MODE_INFRA) |
| 1336 | results[ap_num].caps |= IEEE80211_CAP_ESS; |
| 1337 | break; |
| 1338 | case SIOCGIWESSID: |
| 1339 | ssid_len = iwe->u.essid.length; |
| 1340 | if (custom + ssid_len > end) |
| 1341 | break; |
| 1342 | if (iwe->u.essid.flags && |
| 1343 | ssid_len > 0 && |
| 1344 | ssid_len <= IW_ESSID_MAX_SIZE) { |
| 1345 | if (ap_num < max_size) { |
| 1346 | os_memcpy(results[ap_num].ssid, custom, |
| 1347 | ssid_len); |
| 1348 | results[ap_num].ssid_len = ssid_len; |
| 1349 | } |
| 1350 | } |
| 1351 | break; |
| 1352 | case SIOCGIWFREQ: |
| 1353 | if (ap_num < max_size) { |
| 1354 | int divi = 1000000, i; |
| 1355 | if (iwe->u.freq.e == 0) { |
| 1356 | /* |
| 1357 | * Some drivers do not report |
| 1358 | * frequency, but a channel. Try to map |
| 1359 | * this to frequency by assuming they |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 1360 | * are using IEEE 802.11b/g. But don't |
| 1361 | * overwrite a previously parsed |
| 1362 | * frequency if the driver sends both |
| 1363 | * frequency and channel, since the |
| 1364 | * driver may be sending an A-band |
| 1365 | * channel that we don't handle here. |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1366 | */ |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 1367 | |
| 1368 | if (results[ap_num].freq) |
| 1369 | break; |
| 1370 | |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1371 | if (iwe->u.freq.m >= 1 && |
| 1372 | iwe->u.freq.m <= 13) { |
| 1373 | results[ap_num].freq = |
| 1374 | 2407 + |
| 1375 | 5 * iwe->u.freq.m; |
| 1376 | break; |
| 1377 | } else if (iwe->u.freq.m == 14) { |
| 1378 | results[ap_num].freq = 2484; |
| 1379 | break; |
| 1380 | } |
| 1381 | } |
| 1382 | if (iwe->u.freq.e > 6) { |
| 1383 | wpa_printf( |
| 1384 | MSG_DEBUG, "Invalid freq " |
| 1385 | "in scan results (BSSID=" |
| 1386 | MACSTR ": m=%d e=%d\n", |
| 1387 | MAC2STR(results[ap_num].bssid), |
| 1388 | iwe->u.freq.m, iwe->u.freq.e); |
| 1389 | break; |
| 1390 | } |
| 1391 | for (i = 0; i < iwe->u.freq.e; i++) |
| 1392 | divi /= 10; |
| 1393 | results[ap_num].freq = iwe->u.freq.m / divi; |
| 1394 | } |
| 1395 | break; |
| 1396 | case IWEVQUAL: |
| 1397 | if (ap_num < max_size) { |
| 1398 | results[ap_num].qual = iwe->u.qual.qual; |
| 1399 | results[ap_num].noise = iwe->u.qual.noise; |
| 1400 | results[ap_num].level = iwe->u.qual.level; |
| 1401 | } |
| 1402 | break; |
| 1403 | case SIOCGIWENCODE: |
| 1404 | if (ap_num < max_size && |
| 1405 | !(iwe->u.data.flags & IW_ENCODE_DISABLED)) |
| 1406 | results[ap_num].caps |= IEEE80211_CAP_PRIVACY; |
| 1407 | break; |
| 1408 | case SIOCGIWRATE: |
| 1409 | custom = pos + IW_EV_LCP_LEN; |
| 1410 | clen = iwe->len; |
| 1411 | if (custom + clen > end) |
| 1412 | break; |
| 1413 | maxrate = 0; |
| 1414 | while (((ssize_t) clen) >= |
| 1415 | (ssize_t) sizeof(struct iw_param)) { |
| 1416 | /* Note: may be misaligned, make a local, |
| 1417 | * aligned copy */ |
| 1418 | os_memcpy(&p, custom, sizeof(struct iw_param)); |
| 1419 | if (p.value > maxrate) |
| 1420 | maxrate = p.value; |
| 1421 | clen -= sizeof(struct iw_param); |
| 1422 | custom += sizeof(struct iw_param); |
| 1423 | } |
| 1424 | if (ap_num < max_size) |
| 1425 | results[ap_num].maxrate = maxrate; |
| 1426 | break; |
| 1427 | case IWEVGENIE: |
| 1428 | if (ap_num >= max_size) |
| 1429 | break; |
| 1430 | gpos = genie = custom; |
| 1431 | gend = genie + iwe->u.data.length; |
| 1432 | if (gend > end) { |
| 1433 | wpa_printf(MSG_INFO, "IWEVGENIE overflow"); |
| 1434 | break; |
| 1435 | } |
| 1436 | while (gpos + 1 < gend && |
| 1437 | gpos + 2 + (u8) gpos[1] <= gend) { |
| 1438 | u8 ie = gpos[0], ielen = gpos[1] + 2; |
| 1439 | if (ielen > SSID_MAX_WPA_IE_LEN) { |
| 1440 | gpos += ielen; |
| 1441 | continue; |
| 1442 | } |
| 1443 | switch (ie) { |
| 1444 | case GENERIC_INFO_ELEM: |
| 1445 | if (ielen < 2 + 4 || |
| 1446 | os_memcmp(&gpos[2], |
| 1447 | "\x00\x50\xf2\x01", 4) != |
| 1448 | 0) |
| 1449 | break; |
| 1450 | os_memcpy(results[ap_num].wpa_ie, gpos, |
| 1451 | ielen); |
| 1452 | results[ap_num].wpa_ie_len = ielen; |
| 1453 | break; |
| 1454 | case RSN_INFO_ELEM: |
| 1455 | os_memcpy(results[ap_num].rsn_ie, gpos, |
| 1456 | ielen); |
| 1457 | results[ap_num].rsn_ie_len = ielen; |
| 1458 | break; |
| 1459 | } |
| 1460 | gpos += ielen; |
| 1461 | } |
| 1462 | break; |
| 1463 | case IWEVCUSTOM: |
| 1464 | clen = iwe->u.data.length; |
| 1465 | if (custom + clen > end) |
| 1466 | break; |
| 1467 | if (clen > 7 && |
| 1468 | os_strncmp(custom, "wpa_ie=", 7) == 0 && |
| 1469 | ap_num < max_size) { |
| 1470 | char *spos; |
| 1471 | int bytes; |
| 1472 | spos = custom + 7; |
| 1473 | bytes = custom + clen - spos; |
| 1474 | if (bytes & 1) |
| 1475 | break; |
| 1476 | bytes /= 2; |
| 1477 | if (bytes > SSID_MAX_WPA_IE_LEN) { |
| 1478 | wpa_printf(MSG_INFO, "Too long WPA IE " |
| 1479 | "(%d)", bytes); |
| 1480 | break; |
| 1481 | } |
| 1482 | hexstr2bin(spos, results[ap_num].wpa_ie, |
| 1483 | bytes); |
| 1484 | results[ap_num].wpa_ie_len = bytes; |
| 1485 | } else if (clen > 7 && |
| 1486 | os_strncmp(custom, "rsn_ie=", 7) == 0 && |
| 1487 | ap_num < max_size) { |
| 1488 | char *spos; |
| 1489 | int bytes; |
| 1490 | spos = custom + 7; |
| 1491 | bytes = custom + clen - spos; |
| 1492 | if (bytes & 1) |
| 1493 | break; |
| 1494 | bytes /= 2; |
| 1495 | if (bytes > SSID_MAX_WPA_IE_LEN) { |
| 1496 | wpa_printf(MSG_INFO, "Too long RSN IE " |
| 1497 | "(%d)", bytes); |
| 1498 | break; |
| 1499 | } |
| 1500 | hexstr2bin(spos, results[ap_num].rsn_ie, |
| 1501 | bytes); |
| 1502 | results[ap_num].rsn_ie_len = bytes; |
| 1503 | } |
| 1504 | break; |
| 1505 | } |
| 1506 | |
| 1507 | pos += iwe->len; |
| 1508 | } |
| 1509 | os_free(res_buf); |
| 1510 | res_buf = NULL; |
| 1511 | if (!first) |
| 1512 | ap_num++; |
| 1513 | if (ap_num > max_size) { |
| 1514 | wpa_printf(MSG_DEBUG, "Too small scan result buffer - " |
| 1515 | "%lu BSSes but room only for %lu", |
| 1516 | (unsigned long) ap_num, |
| 1517 | (unsigned long) max_size); |
| 1518 | ap_num = max_size; |
| 1519 | } |
| 1520 | qsort(results, ap_num, sizeof(struct wpa_scan_result), |
| 1521 | wpa_scan_result_compar); |
| 1522 | |
| 1523 | wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)", |
| 1524 | (unsigned long) len, (unsigned long) ap_num); |
| 1525 | |
| 1526 | return ap_num; |
| 1527 | } |
| 1528 | |
| 1529 | |
| 1530 | static int wpa_driver_wext_get_range(void *priv) |
| 1531 | { |
| 1532 | struct wpa_driver_wext_data *drv = priv; |
| 1533 | struct iw_range *range; |
| 1534 | struct iwreq iwr; |
| 1535 | int minlen; |
| 1536 | size_t buflen; |
| 1537 | |
| 1538 | /* |
| 1539 | * Use larger buffer than struct iw_range in order to allow the |
| 1540 | * structure to grow in the future. |
| 1541 | */ |
| 1542 | buflen = sizeof(struct iw_range) + 500; |
| 1543 | range = os_zalloc(buflen); |
| 1544 | if (range == NULL) |
| 1545 | return -1; |
| 1546 | |
| 1547 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1548 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1549 | iwr.u.data.pointer = (caddr_t) range; |
| 1550 | iwr.u.data.length = buflen; |
| 1551 | |
| 1552 | minlen = ((char *) &range->enc_capa) - (char *) range + |
| 1553 | sizeof(range->enc_capa); |
| 1554 | |
| 1555 | if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) { |
| 1556 | perror("ioctl[SIOCGIWRANGE]"); |
| 1557 | os_free(range); |
| 1558 | return -1; |
| 1559 | } else if (iwr.u.data.length >= minlen && |
| 1560 | range->we_version_compiled >= 18) { |
| 1561 | wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d " |
| 1562 | "WE(source)=%d enc_capa=0x%x", |
| 1563 | range->we_version_compiled, |
| 1564 | range->we_version_source, |
| 1565 | range->enc_capa); |
| 1566 | drv->has_capability = 1; |
| 1567 | drv->we_version_compiled = range->we_version_compiled; |
| 1568 | if (range->enc_capa & IW_ENC_CAPA_WPA) { |
| 1569 | drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA | |
| 1570 | WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK; |
| 1571 | } |
| 1572 | if (range->enc_capa & IW_ENC_CAPA_WPA2) { |
| 1573 | drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | |
| 1574 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; |
| 1575 | } |
| 1576 | drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 | |
| 1577 | WPA_DRIVER_CAPA_ENC_WEP104; |
| 1578 | if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP) |
| 1579 | drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP; |
| 1580 | if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP) |
| 1581 | drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP; |
| 1582 | wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x", |
| 1583 | drv->capa.key_mgmt, drv->capa.enc); |
| 1584 | } else { |
| 1585 | wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - " |
| 1586 | "assuming WPA is not supported"); |
| 1587 | } |
| 1588 | |
| 1589 | os_free(range); |
| 1590 | return 0; |
| 1591 | } |
| 1592 | |
| 1593 | |
| 1594 | static int wpa_driver_wext_set_wpa(void *priv, int enabled) |
| 1595 | { |
| 1596 | struct wpa_driver_wext_data *drv = priv; |
| 1597 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
| 1598 | |
| 1599 | return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED, |
| 1600 | enabled); |
| 1601 | } |
| 1602 | |
| 1603 | |
| 1604 | static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg, |
| 1605 | const u8 *addr, int key_idx, |
| 1606 | int set_tx, const u8 *seq, |
| 1607 | size_t seq_len, |
| 1608 | const u8 *key, size_t key_len) |
| 1609 | { |
| 1610 | struct wpa_driver_wext_data *drv = priv; |
| 1611 | struct iwreq iwr; |
| 1612 | int ret = 0; |
| 1613 | struct iw_encode_ext *ext; |
| 1614 | |
| 1615 | if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) { |
| 1616 | wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu", |
| 1617 | __FUNCTION__, (unsigned long) seq_len); |
| 1618 | return -1; |
| 1619 | } |
| 1620 | |
| 1621 | ext = os_zalloc(sizeof(*ext) + key_len); |
| 1622 | if (ext == NULL) |
| 1623 | return -1; |
| 1624 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1625 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1626 | iwr.u.encoding.flags = key_idx + 1; |
| 1627 | if (alg == WPA_ALG_NONE) |
| 1628 | iwr.u.encoding.flags |= IW_ENCODE_DISABLED; |
| 1629 | iwr.u.encoding.pointer = (caddr_t) ext; |
| 1630 | iwr.u.encoding.length = sizeof(*ext) + key_len; |
| 1631 | |
| 1632 | if (addr == NULL || |
| 1633 | os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0) |
| 1634 | ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY; |
| 1635 | if (set_tx) |
| 1636 | ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY; |
| 1637 | |
| 1638 | ext->addr.sa_family = ARPHRD_ETHER; |
| 1639 | if (addr) |
| 1640 | os_memcpy(ext->addr.sa_data, addr, ETH_ALEN); |
| 1641 | else |
| 1642 | os_memset(ext->addr.sa_data, 0xff, ETH_ALEN); |
| 1643 | if (key && key_len) { |
| 1644 | os_memcpy(ext + 1, key, key_len); |
| 1645 | ext->key_len = key_len; |
| 1646 | } |
| 1647 | switch (alg) { |
| 1648 | case WPA_ALG_NONE: |
| 1649 | ext->alg = IW_ENCODE_ALG_NONE; |
| 1650 | break; |
| 1651 | case WPA_ALG_WEP: |
| 1652 | ext->alg = IW_ENCODE_ALG_WEP; |
| 1653 | break; |
| 1654 | case WPA_ALG_TKIP: |
| 1655 | ext->alg = IW_ENCODE_ALG_TKIP; |
| 1656 | break; |
| 1657 | case WPA_ALG_CCMP: |
| 1658 | ext->alg = IW_ENCODE_ALG_CCMP; |
| 1659 | break; |
| 1660 | default: |
| 1661 | wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d", |
| 1662 | __FUNCTION__, alg); |
| 1663 | os_free(ext); |
| 1664 | return -1; |
| 1665 | } |
| 1666 | |
| 1667 | if (seq && seq_len) { |
| 1668 | ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID; |
| 1669 | os_memcpy(ext->rx_seq, seq, seq_len); |
| 1670 | } |
| 1671 | |
| 1672 | if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) { |
| 1673 | ret = errno == EOPNOTSUPP ? -2 : -1; |
| 1674 | if (errno == ENODEV) { |
| 1675 | /* |
| 1676 | * ndiswrapper seems to be returning incorrect error |
| 1677 | * code.. */ |
| 1678 | ret = -2; |
| 1679 | } |
| 1680 | |
| 1681 | perror("ioctl[SIOCSIWENCODEEXT]"); |
| 1682 | } |
| 1683 | |
| 1684 | os_free(ext); |
| 1685 | return ret; |
| 1686 | } |
| 1687 | |
| 1688 | |
| 1689 | /** |
| 1690 | * wpa_driver_wext_set_key - Configure encryption key |
| 1691 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 1692 | * @priv: Private driver interface data |
| 1693 | * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP, |
| 1694 | * %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key. |
| 1695 | * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for |
| 1696 | * broadcast/default keys |
| 1697 | * @key_idx: key index (0..3), usually 0 for unicast keys |
| 1698 | * @set_tx: Configure this key as the default Tx key (only used when |
| 1699 | * driver does not support separate unicast/individual key |
| 1700 | * @seq: Sequence number/packet number, seq_len octets, the next |
| 1701 | * packet number to be used for in replay protection; configured |
| 1702 | * for Rx keys (in most cases, this is only used with broadcast |
| 1703 | * keys and set to zero for unicast keys) |
| 1704 | * @seq_len: Length of the seq, depends on the algorithm: |
| 1705 | * TKIP: 6 octets, CCMP: 6 octets |
| 1706 | * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key, |
| 1707 | * 8-byte Rx Mic Key |
| 1708 | * @key_len: Length of the key buffer in octets (WEP: 5 or 13, |
| 1709 | * TKIP: 32, CCMP: 16) |
| 1710 | * Returns: 0 on success, -1 on failure |
| 1711 | * |
| 1712 | * This function uses SIOCSIWENCODEEXT by default, but tries to use |
| 1713 | * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key. |
| 1714 | */ |
| 1715 | int wpa_driver_wext_set_key(void *priv, wpa_alg alg, |
| 1716 | const u8 *addr, int key_idx, |
| 1717 | int set_tx, const u8 *seq, size_t seq_len, |
| 1718 | const u8 *key, size_t key_len) |
| 1719 | { |
| 1720 | struct wpa_driver_wext_data *drv = priv; |
| 1721 | struct iwreq iwr; |
| 1722 | int ret = 0; |
| 1723 | |
| 1724 | wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu " |
| 1725 | "key_len=%lu", |
| 1726 | __FUNCTION__, alg, key_idx, set_tx, |
| 1727 | (unsigned long) seq_len, (unsigned long) key_len); |
| 1728 | |
| 1729 | ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx, |
| 1730 | seq, seq_len, key, key_len); |
| 1731 | if (ret == 0) |
| 1732 | return 0; |
| 1733 | |
| 1734 | if (ret == -2 && |
| 1735 | (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) { |
| 1736 | wpa_printf(MSG_DEBUG, "Driver did not support " |
| 1737 | "SIOCSIWENCODEEXT, trying SIOCSIWENCODE"); |
| 1738 | ret = 0; |
| 1739 | } else { |
| 1740 | wpa_printf(MSG_DEBUG, "Driver did not support " |
| 1741 | "SIOCSIWENCODEEXT"); |
| 1742 | return ret; |
| 1743 | } |
| 1744 | |
| 1745 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1746 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1747 | iwr.u.encoding.flags = key_idx + 1; |
| 1748 | if (alg == WPA_ALG_NONE) |
| 1749 | iwr.u.encoding.flags |= IW_ENCODE_DISABLED; |
| 1750 | iwr.u.encoding.pointer = (caddr_t) key; |
| 1751 | iwr.u.encoding.length = key_len; |
| 1752 | |
| 1753 | if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) { |
| 1754 | perror("ioctl[SIOCSIWENCODE]"); |
| 1755 | ret = -1; |
| 1756 | } |
| 1757 | |
| 1758 | if (set_tx && alg != WPA_ALG_NONE) { |
| 1759 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1760 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1761 | iwr.u.encoding.flags = key_idx + 1; |
| 1762 | iwr.u.encoding.pointer = (caddr_t) NULL; |
| 1763 | iwr.u.encoding.length = 0; |
| 1764 | if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) { |
| 1765 | perror("ioctl[SIOCSIWENCODE] (set_tx)"); |
| 1766 | ret = -1; |
| 1767 | } |
| 1768 | } |
| 1769 | |
| 1770 | return ret; |
| 1771 | } |
| 1772 | |
| 1773 | |
| 1774 | static int wpa_driver_wext_set_countermeasures(void *priv, |
| 1775 | int enabled) |
| 1776 | { |
| 1777 | struct wpa_driver_wext_data *drv = priv; |
| 1778 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
| 1779 | return wpa_driver_wext_set_auth_param(drv, |
| 1780 | IW_AUTH_TKIP_COUNTERMEASURES, |
| 1781 | enabled); |
| 1782 | } |
| 1783 | |
| 1784 | |
| 1785 | static int wpa_driver_wext_set_drop_unencrypted(void *priv, |
| 1786 | int enabled) |
| 1787 | { |
| 1788 | struct wpa_driver_wext_data *drv = priv; |
| 1789 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
| 1790 | drv->use_crypt = enabled; |
| 1791 | return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, |
| 1792 | enabled); |
| 1793 | } |
| 1794 | |
| 1795 | |
| 1796 | static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv, |
| 1797 | const u8 *addr, int cmd, int reason_code) |
| 1798 | { |
| 1799 | struct iwreq iwr; |
| 1800 | struct iw_mlme mlme; |
| 1801 | int ret = 0; |
| 1802 | |
| 1803 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1804 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1805 | os_memset(&mlme, 0, sizeof(mlme)); |
| 1806 | mlme.cmd = cmd; |
| 1807 | mlme.reason_code = reason_code; |
| 1808 | mlme.addr.sa_family = ARPHRD_ETHER; |
| 1809 | os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN); |
| 1810 | iwr.u.data.pointer = (caddr_t) &mlme; |
| 1811 | iwr.u.data.length = sizeof(mlme); |
| 1812 | |
| 1813 | if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) { |
| 1814 | perror("ioctl[SIOCSIWMLME]"); |
| 1815 | ret = -1; |
| 1816 | } |
| 1817 | |
| 1818 | return ret; |
| 1819 | } |
| 1820 | |
| 1821 | |
| 1822 | static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr, |
| 1823 | int reason_code) |
| 1824 | { |
| 1825 | struct wpa_driver_wext_data *drv = priv; |
| 1826 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
| 1827 | return wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code); |
| 1828 | } |
| 1829 | |
| 1830 | |
| 1831 | static int wpa_driver_wext_disassociate(void *priv, const u8 *addr, |
| 1832 | int reason_code) |
| 1833 | { |
| 1834 | struct wpa_driver_wext_data *drv = priv; |
| 1835 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
| 1836 | return wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, |
| 1837 | reason_code); |
| 1838 | } |
| 1839 | |
| 1840 | |
| 1841 | static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie, |
| 1842 | size_t ie_len) |
| 1843 | { |
| 1844 | struct wpa_driver_wext_data *drv = priv; |
| 1845 | struct iwreq iwr; |
| 1846 | int ret = 0; |
| 1847 | |
| 1848 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1849 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1850 | iwr.u.data.pointer = (caddr_t) ie; |
| 1851 | iwr.u.data.length = ie_len; |
| 1852 | |
| 1853 | if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) { |
| 1854 | perror("ioctl[SIOCSIWGENIE]"); |
| 1855 | ret = -1; |
| 1856 | } |
| 1857 | |
| 1858 | return ret; |
| 1859 | } |
| 1860 | |
| 1861 | |
| 1862 | static int wpa_driver_wext_cipher2wext(int cipher) |
| 1863 | { |
| 1864 | switch (cipher) { |
| 1865 | case CIPHER_NONE: |
| 1866 | return IW_AUTH_CIPHER_NONE; |
| 1867 | case CIPHER_WEP40: |
| 1868 | return IW_AUTH_CIPHER_WEP40; |
| 1869 | case CIPHER_TKIP: |
| 1870 | return IW_AUTH_CIPHER_TKIP; |
| 1871 | case CIPHER_CCMP: |
| 1872 | return IW_AUTH_CIPHER_CCMP; |
| 1873 | case CIPHER_WEP104: |
| 1874 | return IW_AUTH_CIPHER_WEP104; |
| 1875 | default: |
| 1876 | return 0; |
| 1877 | } |
| 1878 | } |
| 1879 | |
| 1880 | |
| 1881 | static int wpa_driver_wext_keymgmt2wext(int keymgmt) |
| 1882 | { |
| 1883 | switch (keymgmt) { |
| 1884 | case KEY_MGMT_802_1X: |
| 1885 | case KEY_MGMT_802_1X_NO_WPA: |
| 1886 | return IW_AUTH_KEY_MGMT_802_1X; |
| 1887 | case KEY_MGMT_PSK: |
| 1888 | return IW_AUTH_KEY_MGMT_PSK; |
| 1889 | default: |
| 1890 | return 0; |
| 1891 | } |
| 1892 | } |
| 1893 | |
| 1894 | |
| 1895 | static int |
| 1896 | wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv, |
| 1897 | struct wpa_driver_associate_params *params) |
| 1898 | { |
| 1899 | struct iwreq iwr; |
| 1900 | int ret = 0; |
| 1901 | |
| 1902 | wpa_printf(MSG_DEBUG, "WEXT: Driver did not support " |
| 1903 | "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE"); |
| 1904 | |
| 1905 | os_memset(&iwr, 0, sizeof(iwr)); |
| 1906 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 1907 | /* Just changing mode, not actual keys */ |
| 1908 | iwr.u.encoding.flags = 0; |
| 1909 | iwr.u.encoding.pointer = (caddr_t) NULL; |
| 1910 | iwr.u.encoding.length = 0; |
| 1911 | |
| 1912 | /* |
| 1913 | * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two |
| 1914 | * different things. Here they are used to indicate Open System vs. |
| 1915 | * Shared Key authentication algorithm. However, some drivers may use |
| 1916 | * them to select between open/restricted WEP encrypted (open = allow |
| 1917 | * both unencrypted and encrypted frames; restricted = only allow |
| 1918 | * encrypted frames). |
| 1919 | */ |
| 1920 | |
| 1921 | if (!drv->use_crypt) { |
| 1922 | iwr.u.encoding.flags |= IW_ENCODE_DISABLED; |
| 1923 | } else { |
| 1924 | if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM) |
| 1925 | iwr.u.encoding.flags |= IW_ENCODE_OPEN; |
| 1926 | if (params->auth_alg & AUTH_ALG_SHARED_KEY) |
| 1927 | iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED; |
| 1928 | } |
| 1929 | |
| 1930 | if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) { |
| 1931 | perror("ioctl[SIOCSIWENCODE]"); |
| 1932 | ret = -1; |
| 1933 | } |
| 1934 | |
| 1935 | return ret; |
| 1936 | } |
| 1937 | |
| 1938 | |
| 1939 | static int |
| 1940 | wpa_driver_wext_associate(void *priv, |
| 1941 | struct wpa_driver_associate_params *params) |
| 1942 | { |
| 1943 | struct wpa_driver_wext_data *drv = priv; |
| 1944 | int ret = 0; |
| 1945 | int allow_unencrypted_eapol; |
Dmitry Shmidt | 4866d77 | 2009-09-29 16:14:34 -0700 | [diff] [blame] | 1946 | int value, flags; |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1947 | |
| 1948 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
| 1949 | |
Dmitry Shmidt | 4866d77 | 2009-09-29 16:14:34 -0700 | [diff] [blame] | 1950 | if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) { |
| 1951 | if (!(flags & IFF_UP)) { |
| 1952 | wpa_driver_wext_set_ifflags(drv, flags | IFF_UP); |
| 1953 | } |
| 1954 | } |
| 1955 | |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1956 | /* |
| 1957 | * If the driver did not support SIOCSIWAUTH, fallback to |
| 1958 | * SIOCSIWENCODE here. |
| 1959 | */ |
| 1960 | if (drv->auth_alg_fallback && |
| 1961 | wpa_driver_wext_auth_alg_fallback(drv, params) < 0) |
| 1962 | ret = -1; |
| 1963 | |
| 1964 | if (!params->bssid && |
| 1965 | wpa_driver_wext_set_bssid(drv, NULL) < 0) |
| 1966 | ret = -1; |
| 1967 | |
| 1968 | if (wpa_driver_wext_set_mode(drv, params->mode) < 0) |
| 1969 | ret = -1; |
| 1970 | /* TODO: should consider getting wpa version and cipher/key_mgmt suites |
| 1971 | * from configuration, not from here, where only the selected suite is |
| 1972 | * available */ |
| 1973 | if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len) |
| 1974 | < 0) |
| 1975 | ret = -1; |
| 1976 | if (params->wpa_ie == NULL || params->wpa_ie_len == 0) |
| 1977 | value = IW_AUTH_WPA_VERSION_DISABLED; |
| 1978 | else if (params->wpa_ie[0] == RSN_INFO_ELEM) |
| 1979 | value = IW_AUTH_WPA_VERSION_WPA2; |
| 1980 | else |
| 1981 | value = IW_AUTH_WPA_VERSION_WPA; |
| 1982 | if (wpa_driver_wext_set_auth_param(drv, |
| 1983 | IW_AUTH_WPA_VERSION, value) < 0) |
| 1984 | ret = -1; |
| 1985 | value = wpa_driver_wext_cipher2wext(params->pairwise_suite); |
| 1986 | if (wpa_driver_wext_set_auth_param(drv, |
| 1987 | IW_AUTH_CIPHER_PAIRWISE, value) < 0) |
| 1988 | ret = -1; |
| 1989 | value = wpa_driver_wext_cipher2wext(params->group_suite); |
| 1990 | if (wpa_driver_wext_set_auth_param(drv, |
| 1991 | IW_AUTH_CIPHER_GROUP, value) < 0) |
| 1992 | ret = -1; |
| 1993 | value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite); |
| 1994 | if (wpa_driver_wext_set_auth_param(drv, |
| 1995 | IW_AUTH_KEY_MGMT, value) < 0) |
| 1996 | ret = -1; |
| 1997 | value = params->key_mgmt_suite != KEY_MGMT_NONE || |
| 1998 | params->pairwise_suite != CIPHER_NONE || |
| 1999 | params->group_suite != CIPHER_NONE || |
| 2000 | params->wpa_ie_len; |
| 2001 | if (wpa_driver_wext_set_auth_param(drv, |
| 2002 | IW_AUTH_PRIVACY_INVOKED, value) < 0) |
| 2003 | ret = -1; |
| 2004 | |
| 2005 | /* Allow unencrypted EAPOL messages even if pairwise keys are set when |
| 2006 | * not using WPA. IEEE 802.1X specifies that these frames are not |
| 2007 | * encrypted, but WPA encrypts them when pairwise keys are in use. */ |
| 2008 | if (params->key_mgmt_suite == KEY_MGMT_802_1X || |
| 2009 | params->key_mgmt_suite == KEY_MGMT_PSK) |
| 2010 | allow_unencrypted_eapol = 0; |
| 2011 | else |
| 2012 | allow_unencrypted_eapol = 1; |
| 2013 | |
| 2014 | if (wpa_driver_wext_set_auth_param(drv, |
| 2015 | IW_AUTH_RX_UNENCRYPTED_EAPOL, |
| 2016 | allow_unencrypted_eapol) < 0) |
| 2017 | ret = -1; |
| 2018 | if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0) |
| 2019 | ret = -1; |
| 2020 | if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0) |
| 2021 | ret = -1; |
| 2022 | if (params->bssid && |
| 2023 | wpa_driver_wext_set_bssid(drv, params->bssid) < 0) |
| 2024 | ret = -1; |
| 2025 | |
| 2026 | return ret; |
| 2027 | } |
| 2028 | |
| 2029 | |
| 2030 | static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg) |
| 2031 | { |
| 2032 | struct wpa_driver_wext_data *drv = priv; |
| 2033 | int algs = 0, res; |
| 2034 | |
| 2035 | if (auth_alg & AUTH_ALG_OPEN_SYSTEM) |
| 2036 | algs |= IW_AUTH_ALG_OPEN_SYSTEM; |
| 2037 | if (auth_alg & AUTH_ALG_SHARED_KEY) |
| 2038 | algs |= IW_AUTH_ALG_SHARED_KEY; |
| 2039 | if (auth_alg & AUTH_ALG_LEAP) |
| 2040 | algs |= IW_AUTH_ALG_LEAP; |
| 2041 | if (algs == 0) { |
| 2042 | /* at least one algorithm should be set */ |
| 2043 | algs = IW_AUTH_ALG_OPEN_SYSTEM; |
| 2044 | } |
| 2045 | |
| 2046 | res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG, |
| 2047 | algs); |
| 2048 | drv->auth_alg_fallback = res == -2; |
| 2049 | return res; |
| 2050 | } |
| 2051 | |
| 2052 | |
| 2053 | /** |
| 2054 | * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE |
| 2055 | * @priv: Pointer to private wext data from wpa_driver_wext_init() |
| 2056 | * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS |
| 2057 | * Returns: 0 on success, -1 on failure |
| 2058 | */ |
| 2059 | int wpa_driver_wext_set_mode(void *priv, int mode) |
| 2060 | { |
| 2061 | struct wpa_driver_wext_data *drv = priv; |
| 2062 | struct iwreq iwr; |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 2063 | int ret = -1, flags; |
| 2064 | unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA; |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 2065 | |
| 2066 | os_memset(&iwr, 0, sizeof(iwr)); |
| 2067 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 2068 | iwr.u.mode = new_mode; |
| 2069 | if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) { |
| 2070 | ret = 0; |
| 2071 | goto done; |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 2072 | } |
| 2073 | |
Dmitry Shmidt | dc9507e | 2009-04-16 11:38:56 -0700 | [diff] [blame] | 2074 | if (errno != EBUSY) { |
| 2075 | perror("ioctl[SIOCSIWMODE]"); |
| 2076 | goto done; |
| 2077 | } |
| 2078 | |
| 2079 | /* mac80211 doesn't allow mode changes while the device is up, so if |
| 2080 | * the device isn't in the mode we're about to change to, take device |
| 2081 | * down, try to set the mode again, and bring it back up. |
| 2082 | */ |
| 2083 | if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) { |
| 2084 | perror("ioctl[SIOCGIWMODE]"); |
| 2085 | goto done; |
| 2086 | } |
| 2087 | |
| 2088 | if (iwr.u.mode == new_mode) { |
| 2089 | ret = 0; |
| 2090 | goto done; |
| 2091 | } |
| 2092 | |
| 2093 | if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) { |
| 2094 | (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP); |
| 2095 | |
| 2096 | /* Try to set the mode again while the interface is down */ |
| 2097 | iwr.u.mode = new_mode; |
| 2098 | if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) |
| 2099 | perror("ioctl[SIOCSIWMODE]"); |
| 2100 | else |
| 2101 | ret = 0; |
| 2102 | |
| 2103 | /* Ignore return value of get_ifflags to ensure that the device |
| 2104 | * is always up like it was before this function was called. |
| 2105 | */ |
| 2106 | (void) wpa_driver_wext_get_ifflags(drv, &flags); |
| 2107 | (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP); |
| 2108 | } |
| 2109 | |
| 2110 | done: |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 2111 | return ret; |
| 2112 | } |
| 2113 | |
| 2114 | |
| 2115 | static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv, |
| 2116 | u32 cmd, const u8 *bssid, const u8 *pmkid) |
| 2117 | { |
| 2118 | struct iwreq iwr; |
| 2119 | struct iw_pmksa pmksa; |
| 2120 | int ret = 0; |
| 2121 | |
| 2122 | os_memset(&iwr, 0, sizeof(iwr)); |
| 2123 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 2124 | os_memset(&pmksa, 0, sizeof(pmksa)); |
| 2125 | pmksa.cmd = cmd; |
| 2126 | pmksa.bssid.sa_family = ARPHRD_ETHER; |
| 2127 | if (bssid) |
| 2128 | os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN); |
| 2129 | if (pmkid) |
| 2130 | os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN); |
| 2131 | iwr.u.data.pointer = (caddr_t) &pmksa; |
| 2132 | iwr.u.data.length = sizeof(pmksa); |
| 2133 | |
| 2134 | if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) { |
| 2135 | if (errno != EOPNOTSUPP) |
| 2136 | perror("ioctl[SIOCSIWPMKSA]"); |
| 2137 | ret = -1; |
| 2138 | } |
| 2139 | |
| 2140 | return ret; |
| 2141 | } |
| 2142 | |
| 2143 | |
| 2144 | static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid, |
| 2145 | const u8 *pmkid) |
| 2146 | { |
| 2147 | struct wpa_driver_wext_data *drv = priv; |
| 2148 | return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid); |
| 2149 | } |
| 2150 | |
| 2151 | |
| 2152 | static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid, |
| 2153 | const u8 *pmkid) |
| 2154 | { |
| 2155 | struct wpa_driver_wext_data *drv = priv; |
| 2156 | return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid); |
| 2157 | } |
| 2158 | |
| 2159 | |
| 2160 | static int wpa_driver_wext_flush_pmkid(void *priv) |
| 2161 | { |
| 2162 | struct wpa_driver_wext_data *drv = priv; |
| 2163 | return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL); |
| 2164 | } |
| 2165 | |
| 2166 | |
| 2167 | static int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa) |
| 2168 | { |
| 2169 | struct wpa_driver_wext_data *drv = priv; |
| 2170 | if (!drv->has_capability) |
| 2171 | return -1; |
| 2172 | os_memcpy(capa, &drv->capa, sizeof(*capa)); |
| 2173 | return 0; |
| 2174 | } |
| 2175 | |
| 2176 | |
| 2177 | int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv, |
| 2178 | const char *ifname) |
| 2179 | { |
| 2180 | if (ifname == NULL) { |
| 2181 | drv->ifindex2 = -1; |
| 2182 | return 0; |
| 2183 | } |
| 2184 | |
| 2185 | drv->ifindex2 = if_nametoindex(ifname); |
| 2186 | if (drv->ifindex2 <= 0) |
| 2187 | return -1; |
| 2188 | |
| 2189 | wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for " |
| 2190 | "wireless events", drv->ifindex2, ifname); |
| 2191 | |
| 2192 | return 0; |
| 2193 | } |
| 2194 | |
| 2195 | |
| 2196 | int wpa_driver_wext_set_operstate(void *priv, int state) |
| 2197 | { |
| 2198 | struct wpa_driver_wext_data *drv = priv; |
| 2199 | |
| 2200 | wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", |
| 2201 | __func__, drv->operstate, state, state ? "UP" : "DORMANT"); |
| 2202 | drv->operstate = state; |
| 2203 | return wpa_driver_wext_send_oper_ifla( |
| 2204 | drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT); |
| 2205 | } |
| 2206 | |
| 2207 | |
| 2208 | #ifdef CONFIG_CLIENT_MLME |
| 2209 | static int hostapd_ioctl(struct wpa_driver_wext_data *drv, |
| 2210 | struct prism2_hostapd_param *param, int len) |
| 2211 | { |
| 2212 | struct iwreq iwr; |
| 2213 | |
| 2214 | os_memset(&iwr, 0, sizeof(iwr)); |
| 2215 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 2216 | iwr.u.data.pointer = (caddr_t) param; |
| 2217 | iwr.u.data.length = len; |
| 2218 | |
| 2219 | if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) { |
| 2220 | perror("ioctl[PRISM2_IOCTL_HOSTAPD]"); |
| 2221 | return -1; |
| 2222 | } |
| 2223 | |
| 2224 | return 0; |
| 2225 | } |
| 2226 | |
| 2227 | |
| 2228 | static struct wpa_hw_modes * |
| 2229 | wpa_driver_wext_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) |
| 2230 | { |
| 2231 | struct wpa_driver_wext_data *drv = priv; |
| 2232 | struct prism2_hostapd_param *param; |
| 2233 | u8 *pos, *end; |
| 2234 | struct wpa_hw_modes *modes = NULL; |
| 2235 | int i; |
| 2236 | |
| 2237 | param = os_zalloc(PRISM2_HOSTAPD_MAX_BUF_SIZE); |
| 2238 | if (param == NULL) |
| 2239 | return NULL; |
| 2240 | param->cmd = PRISM2_HOSTAPD_GET_HW_FEATURES; |
| 2241 | |
| 2242 | if (hostapd_ioctl(drv, param, PRISM2_HOSTAPD_MAX_BUF_SIZE) < 0) { |
| 2243 | perror("ioctl[PRISM2_IOCTL_HOSTAPD]"); |
| 2244 | goto out; |
| 2245 | } |
| 2246 | |
| 2247 | *num_modes = param->u.hw_features.num_modes; |
| 2248 | *flags = param->u.hw_features.flags; |
| 2249 | |
| 2250 | pos = param->u.hw_features.data; |
| 2251 | end = pos + PRISM2_HOSTAPD_MAX_BUF_SIZE - |
| 2252 | (param->u.hw_features.data - (u8 *) param); |
| 2253 | |
| 2254 | modes = os_zalloc(*num_modes * sizeof(struct wpa_hw_modes)); |
| 2255 | if (modes == NULL) |
| 2256 | goto out; |
| 2257 | |
| 2258 | for (i = 0; i < *num_modes; i++) { |
| 2259 | struct hostapd_ioctl_hw_modes_hdr *hdr; |
| 2260 | struct wpa_hw_modes *feature; |
| 2261 | int clen, rlen; |
| 2262 | |
| 2263 | hdr = (struct hostapd_ioctl_hw_modes_hdr *) pos; |
| 2264 | pos = (u8 *) (hdr + 1); |
| 2265 | clen = hdr->num_channels * sizeof(struct wpa_channel_data); |
| 2266 | rlen = hdr->num_rates * sizeof(struct wpa_rate_data); |
| 2267 | |
| 2268 | feature = &modes[i]; |
| 2269 | switch (hdr->mode) { |
| 2270 | case MODE_IEEE80211A: |
| 2271 | feature->mode = WPA_MODE_IEEE80211A; |
| 2272 | break; |
| 2273 | case MODE_IEEE80211B: |
| 2274 | feature->mode = WPA_MODE_IEEE80211B; |
| 2275 | break; |
| 2276 | case MODE_IEEE80211G: |
| 2277 | feature->mode = WPA_MODE_IEEE80211G; |
| 2278 | break; |
| 2279 | case MODE_ATHEROS_TURBO: |
| 2280 | case MODE_ATHEROS_TURBOG: |
| 2281 | wpa_printf(MSG_ERROR, "Skip unsupported hw_mode=%d in " |
| 2282 | "get_hw_features data", hdr->mode); |
| 2283 | pos += clen + rlen; |
| 2284 | continue; |
| 2285 | default: |
| 2286 | wpa_printf(MSG_ERROR, "Unknown hw_mode=%d in " |
| 2287 | "get_hw_features data", hdr->mode); |
| 2288 | ieee80211_sta_free_hw_features(modes, *num_modes); |
| 2289 | modes = NULL; |
| 2290 | break; |
| 2291 | } |
| 2292 | feature->num_channels = hdr->num_channels; |
| 2293 | feature->num_rates = hdr->num_rates; |
| 2294 | |
| 2295 | feature->channels = os_malloc(clen); |
| 2296 | feature->rates = os_malloc(rlen); |
| 2297 | if (!feature->channels || !feature->rates || |
| 2298 | pos + clen + rlen > end) { |
| 2299 | ieee80211_sta_free_hw_features(modes, *num_modes); |
| 2300 | modes = NULL; |
| 2301 | break; |
| 2302 | } |
| 2303 | |
| 2304 | os_memcpy(feature->channels, pos, clen); |
| 2305 | pos += clen; |
| 2306 | os_memcpy(feature->rates, pos, rlen); |
| 2307 | pos += rlen; |
| 2308 | } |
| 2309 | |
| 2310 | out: |
| 2311 | os_free(param); |
| 2312 | return modes; |
| 2313 | } |
| 2314 | |
| 2315 | |
| 2316 | int wpa_driver_wext_set_channel(void *priv, wpa_hw_mode phymode, int chan, |
| 2317 | int freq) |
| 2318 | { |
| 2319 | return wpa_driver_wext_set_freq(priv, freq); |
| 2320 | } |
| 2321 | |
| 2322 | |
| 2323 | static void wpa_driver_wext_mlme_read(int sock, void *eloop_ctx, |
| 2324 | void *sock_ctx) |
| 2325 | { |
| 2326 | struct wpa_driver_wext_data *drv = eloop_ctx; |
| 2327 | int len; |
| 2328 | unsigned char buf[3000]; |
| 2329 | struct ieee80211_frame_info *fi; |
| 2330 | struct ieee80211_rx_status rx_status; |
| 2331 | |
| 2332 | len = recv(sock, buf, sizeof(buf), 0); |
| 2333 | if (len < 0) { |
| 2334 | perror("recv[MLME]"); |
| 2335 | return; |
| 2336 | } |
| 2337 | |
| 2338 | if (len < (int) sizeof(struct ieee80211_frame_info)) { |
| 2339 | wpa_printf(MSG_DEBUG, "WEXT: Too short MLME frame (len=%d)", |
| 2340 | len); |
| 2341 | return; |
| 2342 | } |
| 2343 | |
| 2344 | fi = (struct ieee80211_frame_info *) buf; |
| 2345 | if (ntohl(fi->version) != IEEE80211_FI_VERSION) { |
| 2346 | wpa_printf(MSG_DEBUG, "WEXT: Invalid MLME frame info version " |
| 2347 | "0x%x", ntohl(fi->version)); |
| 2348 | return; |
| 2349 | } |
| 2350 | |
| 2351 | os_memset(&rx_status, 0, sizeof(rx_status)); |
| 2352 | rx_status.ssi = ntohl(fi->ssi_signal); |
| 2353 | rx_status.channel = ntohl(fi->channel); |
| 2354 | |
| 2355 | ieee80211_sta_rx(drv->ctx, buf + sizeof(struct ieee80211_frame_info), |
| 2356 | len - sizeof(struct ieee80211_frame_info), |
| 2357 | &rx_status); |
| 2358 | } |
| 2359 | |
| 2360 | |
| 2361 | static int wpa_driver_wext_open_mlme(struct wpa_driver_wext_data *drv) |
| 2362 | { |
| 2363 | int flags, ifindex, s, *i; |
| 2364 | struct sockaddr_ll addr; |
| 2365 | struct iwreq iwr; |
| 2366 | |
| 2367 | os_memset(&iwr, 0, sizeof(iwr)); |
| 2368 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 2369 | i = (int *) iwr.u.name; |
| 2370 | *i++ = PRISM2_PARAM_USER_SPACE_MLME; |
| 2371 | *i++ = 1; |
| 2372 | |
| 2373 | if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) { |
| 2374 | wpa_printf(MSG_ERROR, "WEXT: Failed to configure driver to " |
| 2375 | "use user space MLME"); |
| 2376 | return -1; |
| 2377 | } |
| 2378 | |
| 2379 | ifindex = if_nametoindex(drv->mlmedev); |
| 2380 | if (ifindex == 0) { |
| 2381 | wpa_printf(MSG_ERROR, "WEXT: mlmedev='%s' not found", |
| 2382 | drv->mlmedev); |
| 2383 | return -1; |
| 2384 | } |
| 2385 | |
| 2386 | if (wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev, &flags) != 0 |
| 2387 | || wpa_driver_wext_set_ifflags_ifname(drv, drv->mlmedev, |
| 2388 | flags | IFF_UP) != 0) { |
| 2389 | wpa_printf(MSG_ERROR, "WEXT: Could not set interface " |
| 2390 | "'%s' UP", drv->mlmedev); |
| 2391 | return -1; |
| 2392 | } |
| 2393 | |
| 2394 | s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); |
| 2395 | if (s < 0) { |
| 2396 | perror("socket[PF_PACKET,SOCK_RAW]"); |
| 2397 | return -1; |
| 2398 | } |
| 2399 | |
| 2400 | os_memset(&addr, 0, sizeof(addr)); |
| 2401 | addr.sll_family = AF_PACKET; |
| 2402 | addr.sll_ifindex = ifindex; |
| 2403 | |
| 2404 | if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
| 2405 | perror("bind(MLME)"); |
| 2406 | return -1; |
| 2407 | } |
| 2408 | |
| 2409 | if (eloop_register_read_sock(s, wpa_driver_wext_mlme_read, drv, NULL)) |
| 2410 | { |
| 2411 | wpa_printf(MSG_ERROR, "WEXT: Could not register MLME read " |
| 2412 | "socket"); |
| 2413 | close(s); |
| 2414 | return -1; |
| 2415 | } |
| 2416 | |
| 2417 | return s; |
| 2418 | } |
| 2419 | |
| 2420 | |
| 2421 | static int wpa_driver_wext_send_mlme(void *priv, const u8 *data, |
| 2422 | size_t data_len) |
| 2423 | { |
| 2424 | struct wpa_driver_wext_data *drv = priv; |
| 2425 | int ret; |
| 2426 | |
| 2427 | ret = send(drv->mlme_sock, data, data_len, 0); |
| 2428 | if (ret < 0) { |
| 2429 | perror("send[MLME]"); |
| 2430 | return -1; |
| 2431 | } |
| 2432 | |
| 2433 | return 0; |
| 2434 | } |
| 2435 | |
| 2436 | |
| 2437 | static int wpa_driver_wext_mlme_add_sta(void *priv, const u8 *addr, |
| 2438 | const u8 *supp_rates, |
| 2439 | size_t supp_rates_len) |
| 2440 | { |
| 2441 | struct wpa_driver_wext_data *drv = priv; |
| 2442 | struct prism2_hostapd_param param; |
| 2443 | size_t len; |
| 2444 | |
| 2445 | os_memset(¶m, 0, sizeof(param)); |
| 2446 | param.cmd = PRISM2_HOSTAPD_ADD_STA; |
| 2447 | os_memcpy(param.sta_addr, addr, ETH_ALEN); |
| 2448 | len = supp_rates_len; |
| 2449 | if (len > sizeof(param.u.add_sta.supp_rates)) |
| 2450 | len = sizeof(param.u.add_sta.supp_rates); |
| 2451 | os_memcpy(param.u.add_sta.supp_rates, supp_rates, len); |
| 2452 | return hostapd_ioctl(drv, ¶m, sizeof(param)); |
| 2453 | } |
| 2454 | |
| 2455 | |
| 2456 | static int wpa_driver_wext_mlme_remove_sta(void *priv, const u8 *addr) |
| 2457 | { |
| 2458 | struct wpa_driver_wext_data *drv = priv; |
| 2459 | struct prism2_hostapd_param param; |
| 2460 | |
| 2461 | os_memset(¶m, 0, sizeof(param)); |
| 2462 | param.cmd = PRISM2_HOSTAPD_REMOVE_STA; |
| 2463 | os_memcpy(param.sta_addr, addr, ETH_ALEN); |
| 2464 | return hostapd_ioctl(drv, ¶m, sizeof(param)); |
| 2465 | } |
| 2466 | |
| 2467 | #endif /* CONFIG_CLIENT_MLME */ |
| 2468 | |
| 2469 | |
| 2470 | static int wpa_driver_wext_set_param(void *priv, const char *param) |
| 2471 | { |
| 2472 | #ifdef CONFIG_CLIENT_MLME |
| 2473 | struct wpa_driver_wext_data *drv = priv; |
| 2474 | const char *pos, *pos2; |
| 2475 | size_t len; |
| 2476 | |
| 2477 | if (param == NULL) |
| 2478 | return 0; |
| 2479 | |
| 2480 | wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param); |
| 2481 | |
| 2482 | pos = os_strstr(param, "mlmedev="); |
| 2483 | if (pos) { |
| 2484 | pos += 8; |
| 2485 | pos2 = os_strchr(pos, ' '); |
| 2486 | if (pos2) |
| 2487 | len = pos2 - pos; |
| 2488 | else |
| 2489 | len = os_strlen(pos); |
| 2490 | if (len + 1 > sizeof(drv->mlmedev)) |
| 2491 | return -1; |
| 2492 | os_memcpy(drv->mlmedev, pos, len); |
| 2493 | drv->mlmedev[len] = '\0'; |
| 2494 | wpa_printf(MSG_DEBUG, "WEXT: Using user space MLME with " |
| 2495 | "mlmedev='%s'", drv->mlmedev); |
| 2496 | drv->capa.flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME; |
| 2497 | |
| 2498 | drv->mlme_sock = wpa_driver_wext_open_mlme(drv); |
| 2499 | if (drv->mlme_sock < 0) |
| 2500 | return -1; |
| 2501 | } |
| 2502 | #endif /* CONFIG_CLIENT_MLME */ |
| 2503 | |
| 2504 | return 0; |
| 2505 | } |
| 2506 | |
| 2507 | |
| 2508 | int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv) |
| 2509 | { |
| 2510 | return drv->we_version_compiled; |
| 2511 | } |
| 2512 | |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2513 | #ifdef ANDROID |
Dmitry Shmidt | 4b3af3f | 2009-11-03 14:41:57 -0800 | [diff] [blame] | 2514 | static char *wpa_driver_get_country_code(int channels) |
| 2515 | { |
| 2516 | char *country = "US"; /* WEXT_NUMBER_SCAN_CHANNELS_FCC */ |
| 2517 | |
| 2518 | if (channels == WEXT_NUMBER_SCAN_CHANNELS_ETSI) |
| 2519 | country = "EU"; |
| 2520 | else if( channels == WEXT_NUMBER_SCAN_CHANNELS_MKK1) |
| 2521 | country = "JP"; |
| 2522 | return country; |
| 2523 | } |
| 2524 | |
Dmitry Shmidt | c7da28c | 2009-11-20 18:21:55 -0800 | [diff] [blame] | 2525 | static int wpa_driver_priv_driver_cmd(void *priv, char *cmd, char *buf, size_t buf_len) |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2526 | { |
| 2527 | struct wpa_driver_wext_data *drv = priv; |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 2528 | struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx); |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2529 | struct iwreq iwr; |
Dmitry Shmidt | c7da28c | 2009-11-20 18:21:55 -0800 | [diff] [blame] | 2530 | int ret = 0, flags; |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2531 | |
| 2532 | wpa_printf(MSG_DEBUG, "%s %s len = %d", __func__, cmd, buf_len); |
| 2533 | |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 2534 | if (os_strcasecmp(cmd, "RSSI-APPROX") == 0) { |
Dmitry Shmidt | f02dfc2 | 2009-11-03 15:53:04 -0800 | [diff] [blame] | 2535 | os_strncpy(cmd, "RSSI", MAX_DRV_CMD_SIZE); |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 2536 | } |
Dmitry Shmidt | 4b3af3f | 2009-11-03 14:41:57 -0800 | [diff] [blame] | 2537 | else if( os_strncasecmp(cmd, "SCAN-CHANNELS", 13) == 0 ) { |
| 2538 | int no_of_chan; |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 2539 | |
Dmitry Shmidt | 4b3af3f | 2009-11-03 14:41:57 -0800 | [diff] [blame] | 2540 | no_of_chan = atoi(cmd + 13); |
| 2541 | os_snprintf(cmd, MAX_DRV_CMD_SIZE, "COUNTRY %s", |
| 2542 | wpa_driver_get_country_code(no_of_chan)); |
| 2543 | } |
Dmitry Shmidt | c7da28c | 2009-11-20 18:21:55 -0800 | [diff] [blame] | 2544 | else if (os_strcasecmp(cmd, "STOP") == 0) { |
| 2545 | if ((wpa_driver_wext_get_ifflags(drv, &flags) == 0) && |
| 2546 | (flags & IFF_UP)) { |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 2547 | wpa_printf(MSG_ERROR, "WEXT: %s when iface is UP", cmd); |
Dmitry Shmidt | c7da28c | 2009-11-20 18:21:55 -0800 | [diff] [blame] | 2548 | wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP); |
| 2549 | } |
| 2550 | } |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 2551 | else if( os_strcasecmp(cmd, "RELOAD") == 0 ) { |
| 2552 | wpa_printf(MSG_DEBUG,"Reload command"); |
| 2553 | wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); |
| 2554 | return ret; |
| 2555 | } |
Dmitry Shmidt | c7da28c | 2009-11-20 18:21:55 -0800 | [diff] [blame] | 2556 | |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2557 | os_memset(&iwr, 0, sizeof(iwr)); |
| 2558 | os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); |
| 2559 | os_memcpy(buf, cmd, strlen(cmd) + 1); |
| 2560 | iwr.u.data.pointer = buf; |
| 2561 | iwr.u.data.length = buf_len; |
| 2562 | |
| 2563 | if ((ret = ioctl(drv->ioctl_sock, SIOCSIWPRIV, &iwr)) < 0) { |
| 2564 | perror("ioctl[SIOCSIWPRIV]"); |
| 2565 | } |
| 2566 | |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 2567 | if (ret < 0) { |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2568 | wpa_printf(MSG_ERROR, "%s failed", __func__); |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 2569 | drv->errors++; |
| 2570 | if (drv->errors > WEXT_NUMBER_SEQUENTIAL_ERRORS) { |
| 2571 | drv->errors = 0; |
| 2572 | wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); |
| 2573 | } |
| 2574 | } |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2575 | else { |
Dmitry Shmidt | aea96d8 | 2009-11-24 10:32:41 -0800 | [diff] [blame] | 2576 | drv->errors = 0; |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2577 | ret = 0; |
| 2578 | if ((os_strcasecmp(cmd, "RSSI") == 0) || |
| 2579 | (os_strcasecmp(cmd, "LINKSPEED") == 0) || |
| 2580 | (os_strcasecmp(cmd, "MACADDR") == 0)) { |
| 2581 | ret = strlen(buf); |
| 2582 | } |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 2583 | /* else if (os_strcasecmp(cmd, "START") == 0) { |
Dmitry Shmidt | 6114987 | 2009-08-20 12:10:19 -0700 | [diff] [blame] | 2584 | os_sleep(0, WPA_DRIVER_WEXT_WAIT_US); |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2585 | wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED"); |
| 2586 | } |
| 2587 | else if (os_strcasecmp(cmd, "STOP") == 0) { |
| 2588 | wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED"); |
Dmitry Shmidt | 872ebd7 | 2009-07-30 14:16:44 -0700 | [diff] [blame] | 2589 | }*/ |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2590 | wpa_printf(MSG_DEBUG, "%s %s len = %d, %d", __func__, buf, ret, strlen(buf)); |
| 2591 | } |
| 2592 | return ret; |
| 2593 | } |
| 2594 | #endif |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 2595 | |
| 2596 | const struct wpa_driver_ops wpa_driver_wext_ops = { |
| 2597 | .name = "wext", |
| 2598 | .desc = "Linux wireless extensions (generic)", |
| 2599 | .get_bssid = wpa_driver_wext_get_bssid, |
| 2600 | .get_ssid = wpa_driver_wext_get_ssid, |
| 2601 | .set_wpa = wpa_driver_wext_set_wpa, |
| 2602 | .set_key = wpa_driver_wext_set_key, |
| 2603 | .set_countermeasures = wpa_driver_wext_set_countermeasures, |
| 2604 | .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted, |
| 2605 | .scan = wpa_driver_wext_scan, |
| 2606 | .get_scan_results = wpa_driver_wext_get_scan_results, |
| 2607 | .deauthenticate = wpa_driver_wext_deauthenticate, |
| 2608 | .disassociate = wpa_driver_wext_disassociate, |
| 2609 | .associate = wpa_driver_wext_associate, |
| 2610 | .set_auth_alg = wpa_driver_wext_set_auth_alg, |
| 2611 | .init = wpa_driver_wext_init, |
| 2612 | .deinit = wpa_driver_wext_deinit, |
| 2613 | .set_param = wpa_driver_wext_set_param, |
| 2614 | .add_pmkid = wpa_driver_wext_add_pmkid, |
| 2615 | .remove_pmkid = wpa_driver_wext_remove_pmkid, |
| 2616 | .flush_pmkid = wpa_driver_wext_flush_pmkid, |
| 2617 | .get_capa = wpa_driver_wext_get_capa, |
| 2618 | .set_operstate = wpa_driver_wext_set_operstate, |
| 2619 | #ifdef CONFIG_CLIENT_MLME |
| 2620 | .get_hw_feature_data = wpa_driver_wext_get_hw_feature_data, |
| 2621 | .set_channel = wpa_driver_wext_set_channel, |
| 2622 | .set_ssid = wpa_driver_wext_set_ssid, |
| 2623 | .set_bssid = wpa_driver_wext_set_bssid, |
| 2624 | .send_mlme = wpa_driver_wext_send_mlme, |
| 2625 | .mlme_add_sta = wpa_driver_wext_mlme_add_sta, |
| 2626 | .mlme_remove_sta = wpa_driver_wext_mlme_remove_sta, |
| 2627 | #endif /* CONFIG_CLIENT_MLME */ |
Dmitry Shmidt | 79cbd5c | 2009-06-11 15:23:45 -0700 | [diff] [blame] | 2628 | #ifdef ANDROID |
| 2629 | .driver_cmd = wpa_driver_priv_driver_cmd, |
| 2630 | #endif |
The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 2631 | }; |