The Android Open Source Project | 845e012 | 2009-03-03 19:31:34 -0800 | [diff] [blame] | 1 | /* |
| 2 | * WPA Supplicant - driver interaction with Linux ndiswrapper |
| 3 | * Copyright (c) 2004-2006, Giridhar Pemmasani <giri@lmc.cs.sunysb.edu> |
| 4 | * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * Alternatively, this software may be distributed under the terms of BSD |
| 11 | * license. |
| 12 | * |
| 13 | * See README and COPYING for more details. |
| 14 | */ |
| 15 | |
| 16 | #include "includes.h" |
| 17 | #include <sys/ioctl.h> |
| 18 | #include <net/if_arp.h> |
| 19 | |
| 20 | #include "wireless_copy.h" |
| 21 | #include "common.h" |
| 22 | #include "driver.h" |
| 23 | #include "l2_packet.h" |
| 24 | #include "eloop.h" |
| 25 | #include "priv_netlink.h" |
| 26 | #include "driver_wext.h" |
| 27 | |
| 28 | struct wpa_driver_ndiswrapper_data { |
| 29 | void *wext; /* private data for driver_wext */ |
| 30 | void *ctx; |
| 31 | char ifname[IFNAMSIZ + 1]; |
| 32 | int sock; |
| 33 | }; |
| 34 | |
| 35 | |
| 36 | struct wpa_key |
| 37 | { |
| 38 | wpa_alg alg; |
| 39 | const u8 *addr; |
| 40 | int key_index; |
| 41 | int set_tx; |
| 42 | const u8 *seq; |
| 43 | size_t seq_len; |
| 44 | const u8 *key; |
| 45 | size_t key_len; |
| 46 | }; |
| 47 | |
| 48 | struct wpa_assoc_info |
| 49 | { |
| 50 | const u8 *bssid; |
| 51 | const u8 *ssid; |
| 52 | size_t ssid_len; |
| 53 | int freq; |
| 54 | const u8 *wpa_ie; |
| 55 | size_t wpa_ie_len; |
| 56 | wpa_cipher pairwise_suite; |
| 57 | wpa_cipher group_suite; |
| 58 | wpa_key_mgmt key_mgmt_suite; |
| 59 | int auth_alg; |
| 60 | int mode; |
| 61 | }; |
| 62 | |
| 63 | #define PRIV_RESET SIOCIWFIRSTPRIV+0 |
| 64 | #define WPA_SET_WPA SIOCIWFIRSTPRIV+1 |
| 65 | #define WPA_SET_KEY SIOCIWFIRSTPRIV+2 |
| 66 | #define WPA_ASSOCIATE SIOCIWFIRSTPRIV+3 |
| 67 | #define WPA_DISASSOCIATE SIOCIWFIRSTPRIV+4 |
| 68 | #define WPA_DROP_UNENCRYPTED SIOCIWFIRSTPRIV+5 |
| 69 | #define WPA_SET_COUNTERMEASURES SIOCIWFIRSTPRIV+6 |
| 70 | #define WPA_DEAUTHENTICATE SIOCIWFIRSTPRIV+7 |
| 71 | #define WPA_SET_AUTH_ALG SIOCIWFIRSTPRIV+8 |
| 72 | #define WPA_INIT SIOCIWFIRSTPRIV+9 |
| 73 | #define WPA_DEINIT SIOCIWFIRSTPRIV+10 |
| 74 | #define WPA_GET_CAPA SIOCIWFIRSTPRIV+11 |
| 75 | |
| 76 | static int get_socket(void) |
| 77 | { |
| 78 | static const int families[] = { |
| 79 | AF_INET, AF_IPX, AF_AX25, AF_APPLETALK |
| 80 | }; |
| 81 | unsigned int i; |
| 82 | int sock; |
| 83 | |
| 84 | for (i = 0; i < sizeof(families) / sizeof(int); ++i) { |
| 85 | sock = socket(families[i], SOCK_DGRAM, 0); |
| 86 | if (sock >= 0) |
| 87 | return sock; |
| 88 | } |
| 89 | |
| 90 | return -1; |
| 91 | } |
| 92 | |
| 93 | static int iw_set_ext(struct wpa_driver_ndiswrapper_data *drv, int request, |
| 94 | struct iwreq *pwrq) |
| 95 | { |
| 96 | os_strncpy(pwrq->ifr_name, drv->ifname, IFNAMSIZ); |
| 97 | return ioctl(drv->sock, request, pwrq); |
| 98 | } |
| 99 | |
| 100 | static int wpa_ndiswrapper_set_wpa(void *priv, int enabled) |
| 101 | { |
| 102 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 103 | struct iwreq priv_req; |
| 104 | int ret = 0; |
| 105 | |
| 106 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 107 | |
| 108 | priv_req.u.data.flags = enabled; |
| 109 | if (iw_set_ext(drv, WPA_SET_WPA, &priv_req) < 0) |
| 110 | ret = -1; |
| 111 | return ret; |
| 112 | } |
| 113 | |
| 114 | static int wpa_ndiswrapper_set_key(void *priv, wpa_alg alg, const u8 *addr, |
| 115 | int key_idx, int set_tx, |
| 116 | const u8 *seq, size_t seq_len, |
| 117 | const u8 *key, size_t key_len) |
| 118 | { |
| 119 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 120 | struct wpa_key wpa_key; |
| 121 | int ret = 0; |
| 122 | struct iwreq priv_req; |
| 123 | |
| 124 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 125 | |
| 126 | wpa_key.alg = alg; |
| 127 | wpa_key.addr = addr; |
| 128 | wpa_key.key_index = key_idx; |
| 129 | wpa_key.set_tx = set_tx; |
| 130 | wpa_key.seq = seq; |
| 131 | wpa_key.seq_len = seq_len; |
| 132 | wpa_key.key = key; |
| 133 | wpa_key.key_len = key_len; |
| 134 | |
| 135 | priv_req.u.data.pointer = (void *)&wpa_key; |
| 136 | priv_req.u.data.length = sizeof(wpa_key); |
| 137 | |
| 138 | if (iw_set_ext(drv, WPA_SET_KEY, &priv_req) < 0) |
| 139 | ret = -1; |
| 140 | |
| 141 | if (alg == WPA_ALG_NONE) { |
| 142 | /* |
| 143 | * ndiswrapper did not seem to be clearing keys properly in |
| 144 | * some cases with WPA_SET_KEY. For example, roaming from WPA |
| 145 | * enabled AP to plaintext one seemed to fail since the driver |
| 146 | * did not associate. Try to make sure the keys are cleared so |
| 147 | * that plaintext APs can be used in all cases. |
| 148 | */ |
| 149 | wpa_driver_wext_set_key(drv->wext, alg, addr, key_idx, set_tx, |
| 150 | seq, seq_len, key, key_len); |
| 151 | } |
| 152 | |
| 153 | return ret; |
| 154 | } |
| 155 | |
| 156 | static int wpa_ndiswrapper_set_countermeasures(void *priv, int enabled) |
| 157 | { |
| 158 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 159 | int ret = 0; |
| 160 | struct iwreq priv_req; |
| 161 | |
| 162 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 163 | |
| 164 | priv_req.u.param.value = enabled; |
| 165 | if (iw_set_ext(drv, WPA_SET_COUNTERMEASURES, &priv_req) < 0) |
| 166 | ret = -1; |
| 167 | |
| 168 | return ret; |
| 169 | } |
| 170 | |
| 171 | static int wpa_ndiswrapper_set_drop_unencrypted(void *priv, |
| 172 | int enabled) |
| 173 | { |
| 174 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 175 | int ret = 0; |
| 176 | struct iwreq priv_req; |
| 177 | |
| 178 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 179 | |
| 180 | priv_req.u.param.value = enabled; |
| 181 | if (iw_set_ext(drv, WPA_DROP_UNENCRYPTED, &priv_req) < 0) |
| 182 | ret = -1; |
| 183 | return ret; |
| 184 | } |
| 185 | |
| 186 | static int wpa_ndiswrapper_deauthenticate(void *priv, const u8 *addr, |
| 187 | int reason_code) |
| 188 | { |
| 189 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 190 | int ret = 0; |
| 191 | struct iwreq priv_req; |
| 192 | |
| 193 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 194 | |
| 195 | priv_req.u.param.value = reason_code; |
| 196 | os_memcpy(&priv_req.u.ap_addr.sa_data, addr, ETH_ALEN); |
| 197 | if (iw_set_ext(drv, WPA_DEAUTHENTICATE, &priv_req) < 0) |
| 198 | ret = -1; |
| 199 | return ret; |
| 200 | } |
| 201 | |
| 202 | static int wpa_ndiswrapper_disassociate(void *priv, const u8 *addr, |
| 203 | int reason_code) |
| 204 | { |
| 205 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 206 | int ret = 0; |
| 207 | struct iwreq priv_req; |
| 208 | |
| 209 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 210 | |
| 211 | os_memcpy(&priv_req.u.ap_addr.sa_data, addr, ETH_ALEN); |
| 212 | if (iw_set_ext(drv, WPA_DISASSOCIATE, &priv_req) < 0) |
| 213 | ret = -1; |
| 214 | return ret; |
| 215 | } |
| 216 | |
| 217 | static int |
| 218 | wpa_ndiswrapper_associate(void *priv, |
| 219 | struct wpa_driver_associate_params *params) |
| 220 | { |
| 221 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 222 | int ret = 0; |
| 223 | struct wpa_assoc_info wpa_assoc_info; |
| 224 | struct iwreq priv_req; |
| 225 | |
| 226 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 227 | os_memset(&wpa_assoc_info, 0, sizeof(wpa_assoc_info)); |
| 228 | |
| 229 | wpa_assoc_info.bssid = params->bssid; |
| 230 | wpa_assoc_info.ssid = params->ssid; |
| 231 | wpa_assoc_info.ssid_len = params->ssid_len; |
| 232 | wpa_assoc_info.freq = params->freq; |
| 233 | wpa_assoc_info.wpa_ie = params->wpa_ie; |
| 234 | wpa_assoc_info.wpa_ie_len = params->wpa_ie_len; |
| 235 | wpa_assoc_info.pairwise_suite = params->pairwise_suite; |
| 236 | wpa_assoc_info.group_suite = params->group_suite; |
| 237 | wpa_assoc_info.key_mgmt_suite = params->key_mgmt_suite; |
| 238 | wpa_assoc_info.auth_alg = params->auth_alg; |
| 239 | wpa_assoc_info.mode = params->mode; |
| 240 | |
| 241 | priv_req.u.data.pointer = (void *)&wpa_assoc_info; |
| 242 | priv_req.u.data.length = sizeof(wpa_assoc_info); |
| 243 | |
| 244 | if (iw_set_ext(drv, WPA_ASSOCIATE, &priv_req) < 0) |
| 245 | ret = -1; |
| 246 | return ret; |
| 247 | } |
| 248 | |
| 249 | static int wpa_ndiswrapper_set_auth_alg(void *priv, int auth_alg) |
| 250 | { |
| 251 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 252 | int ret = 0; |
| 253 | struct iwreq priv_req; |
| 254 | |
| 255 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 256 | |
| 257 | priv_req.u.param.value = auth_alg; |
| 258 | if (iw_set_ext(drv, WPA_SET_AUTH_ALG, &priv_req) < 0) |
| 259 | ret = -1; |
| 260 | return ret; |
| 261 | } |
| 262 | |
| 263 | static int wpa_ndiswrapper_get_bssid(void *priv, u8 *bssid) |
| 264 | { |
| 265 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 266 | return wpa_driver_wext_get_bssid(drv->wext, bssid); |
| 267 | } |
| 268 | |
| 269 | |
| 270 | static int wpa_ndiswrapper_get_ssid(void *priv, u8 *ssid) |
| 271 | { |
| 272 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 273 | return wpa_driver_wext_get_ssid(drv->wext, ssid); |
| 274 | } |
| 275 | |
| 276 | |
| 277 | static int wpa_ndiswrapper_scan(void *priv, const u8 *ssid, size_t ssid_len) |
| 278 | { |
| 279 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 280 | return wpa_driver_wext_scan(drv->wext, ssid, ssid_len); |
| 281 | } |
| 282 | |
| 283 | |
| 284 | static int wpa_ndiswrapper_get_scan_results(void *priv, |
| 285 | struct wpa_scan_result *results, |
| 286 | size_t max_size) |
| 287 | { |
| 288 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 289 | return wpa_driver_wext_get_scan_results(drv->wext, results, max_size); |
| 290 | } |
| 291 | |
| 292 | |
| 293 | static int wpa_ndiswrapper_get_capa(void *priv, struct wpa_driver_capa *capa) |
| 294 | { |
| 295 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 296 | int ret = 0; |
| 297 | struct iwreq priv_req; |
| 298 | |
| 299 | os_memset(&priv_req, 0, sizeof(priv_req)); |
| 300 | |
| 301 | priv_req.u.data.pointer = (void *) capa; |
| 302 | priv_req.u.data.length = sizeof(*capa); |
| 303 | if (iw_set_ext(drv, WPA_GET_CAPA, &priv_req) < 0) |
| 304 | ret = -1; |
| 305 | return ret; |
| 306 | |
| 307 | } |
| 308 | |
| 309 | |
| 310 | static int wpa_ndiswrapper_set_operstate(void *priv, int state) |
| 311 | { |
| 312 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 313 | return wpa_driver_wext_set_operstate(drv->wext, state); |
| 314 | } |
| 315 | |
| 316 | |
| 317 | static void * wpa_ndiswrapper_init(void *ctx, const char *ifname) |
| 318 | { |
| 319 | struct wpa_driver_ndiswrapper_data *drv; |
| 320 | |
| 321 | drv = os_zalloc(sizeof(*drv)); |
| 322 | if (drv == NULL) |
| 323 | return NULL; |
| 324 | drv->wext = wpa_driver_wext_init(ctx, ifname); |
| 325 | if (drv->wext == NULL) { |
| 326 | os_free(drv); |
| 327 | return NULL; |
| 328 | } |
| 329 | |
| 330 | drv->ctx = ctx; |
| 331 | os_strncpy(drv->ifname, ifname, sizeof(drv->ifname)); |
| 332 | drv->sock = get_socket(); |
| 333 | if (drv->sock < 0) { |
| 334 | wpa_driver_wext_deinit(drv->wext); |
| 335 | os_free(drv); |
| 336 | return NULL; |
| 337 | } |
| 338 | |
| 339 | return drv; |
| 340 | } |
| 341 | |
| 342 | |
| 343 | static void wpa_ndiswrapper_deinit(void *priv) |
| 344 | { |
| 345 | struct wpa_driver_ndiswrapper_data *drv = priv; |
| 346 | wpa_driver_wext_deinit(drv->wext); |
| 347 | close(drv->sock); |
| 348 | os_free(drv); |
| 349 | } |
| 350 | |
| 351 | |
| 352 | const struct wpa_driver_ops wpa_driver_ndiswrapper_ops = { |
| 353 | .name = "ndiswrapper", |
| 354 | .desc = "Linux ndiswrapper", |
| 355 | .set_wpa = wpa_ndiswrapper_set_wpa, |
| 356 | .set_key = wpa_ndiswrapper_set_key, |
| 357 | .set_countermeasures = wpa_ndiswrapper_set_countermeasures, |
| 358 | .set_drop_unencrypted = wpa_ndiswrapper_set_drop_unencrypted, |
| 359 | .deauthenticate = wpa_ndiswrapper_deauthenticate, |
| 360 | .disassociate = wpa_ndiswrapper_disassociate, |
| 361 | .associate = wpa_ndiswrapper_associate, |
| 362 | .set_auth_alg = wpa_ndiswrapper_set_auth_alg, |
| 363 | |
| 364 | .get_bssid = wpa_ndiswrapper_get_bssid, |
| 365 | .get_ssid = wpa_ndiswrapper_get_ssid, |
| 366 | .scan = wpa_ndiswrapper_scan, |
| 367 | .get_scan_results = wpa_ndiswrapper_get_scan_results, |
| 368 | .init = wpa_ndiswrapper_init, |
| 369 | .deinit = wpa_ndiswrapper_deinit, |
| 370 | .get_capa = wpa_ndiswrapper_get_capa, |
| 371 | .set_operstate = wpa_ndiswrapper_set_operstate, |
| 372 | }; |