www.project-moonshot.org Git - mech_eap.orig/blob - src/drivers/driver_ndiswrapper.c

   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  * Please note that ndiswrapper supports WPA configuration via Linux wireless
  16  * extensions and if the kernel includes support for this, driver_wext.c should
  17  * be used instead of this driver wrapper.
  18  */
  19
  20 #include "includes.h"
  21 #include <sys/ioctl.h>
  22
  23 #include "wireless_copy.h"
  24 #include "common.h"
  25 #include "driver.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         enum wpa_alg alg;
  38         const u8 *addr;
  39         int key_index;
  40         int set_tx;
  41         const u8 *seq;
  42         size_t seq_len;
  43         const u8 *key;
  44         size_t key_len;
  45 };
  46
  47 struct wpa_assoc_info {
  48         const u8 *bssid;
  49         const u8 *ssid;
  50         size_t ssid_len;
  51         int freq;
  52         const u8 *wpa_ie;
  53         size_t wpa_ie_len;
  54         enum wpa_cipher pairwise_suite;
  55         enum wpa_cipher group_suite;
  56         enum wpa_key_mgmt key_mgmt_suite;
  57         int auth_alg;
  58         int mode;
  59 };
  60
  61 #define PRIV_RESET                      SIOCIWFIRSTPRIV+0
  62 #define WPA_SET_WPA                     SIOCIWFIRSTPRIV+1
  63 #define WPA_SET_KEY                     SIOCIWFIRSTPRIV+2
  64 #define WPA_ASSOCIATE                   SIOCIWFIRSTPRIV+3
  65 #define WPA_DISASSOCIATE                SIOCIWFIRSTPRIV+4
  66 #define WPA_DROP_UNENCRYPTED            SIOCIWFIRSTPRIV+5
  67 #define WPA_SET_COUNTERMEASURES         SIOCIWFIRSTPRIV+6
  68 #define WPA_DEAUTHENTICATE              SIOCIWFIRSTPRIV+7
  69 #define WPA_SET_AUTH_ALG                SIOCIWFIRSTPRIV+8
  70 #define WPA_INIT                        SIOCIWFIRSTPRIV+9
  71 #define WPA_DEINIT                      SIOCIWFIRSTPRIV+10
  72 #define WPA_GET_CAPA                    SIOCIWFIRSTPRIV+11
  73
  74 static int wpa_ndiswrapper_set_auth_alg(void *priv, int auth_alg);
  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_strlcpy(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(const char *ifname, void *priv,
 115                                    enum wpa_alg alg, const u8 *addr,
 116                                    int key_idx, int set_tx,
 117                                    const u8 *seq, size_t seq_len,
 118                                    const u8 *key, size_t key_len)
 119 {
 120         struct wpa_driver_ndiswrapper_data *drv = priv;
 121         struct wpa_key wpa_key;
 122         int ret = 0;
 123         struct iwreq priv_req;
 124
 125         os_memset(&priv_req, 0, sizeof(priv_req));
 126
 127         wpa_key.alg = alg;
 128         wpa_key.addr = addr;
 129         wpa_key.key_index = key_idx;
 130         wpa_key.set_tx = set_tx;
 131         wpa_key.seq = seq;
 132         wpa_key.seq_len = seq_len;
 133         wpa_key.key = key;
 134         wpa_key.key_len = key_len;
 135
 136         priv_req.u.data.pointer = (void *)&wpa_key;
 137         priv_req.u.data.length = sizeof(wpa_key);
 138
 139         if (iw_set_ext(drv, WPA_SET_KEY, &priv_req) < 0)
 140                 ret = -1;
 141
 142         if (alg == WPA_ALG_NONE) {
 143                 /*
 144                  * ndiswrapper did not seem to be clearing keys properly in
 145                  * some cases with WPA_SET_KEY. For example, roaming from WPA
 146                  * enabled AP to plaintext one seemed to fail since the driver
 147                  * did not associate. Try to make sure the keys are cleared so
 148                  * that plaintext APs can be used in all cases.
 149                  */
 150                 wpa_driver_wext_set_key(ifname, drv->wext, alg, addr, key_idx,
 151                                         set_tx, seq, seq_len, key, key_len);
 152         }
 153
 154         return ret;
 155 }
 156
 157 static int wpa_ndiswrapper_set_countermeasures(void *priv, int enabled)
 158 {
 159         struct wpa_driver_ndiswrapper_data *drv = priv;
 160         int ret = 0;
 161         struct iwreq priv_req;
 162
 163         os_memset(&priv_req, 0, sizeof(priv_req));
 164
 165         priv_req.u.param.value = enabled;
 166         if (iw_set_ext(drv, WPA_SET_COUNTERMEASURES, &priv_req) < 0)
 167                 ret = -1;
 168
 169         return ret;
 170 }
 171
 172 static int wpa_ndiswrapper_set_drop_unencrypted(void *priv,
 173                                                 int enabled)
 174 {
 175         struct wpa_driver_ndiswrapper_data *drv = priv;
 176         int ret = 0;
 177         struct iwreq priv_req;
 178
 179         os_memset(&priv_req, 0, sizeof(priv_req));
 180
 181         priv_req.u.param.value = enabled;
 182         if (iw_set_ext(drv, WPA_DROP_UNENCRYPTED, &priv_req) < 0)
 183                 ret = -1;
 184         return ret;
 185 }
 186
 187 static int wpa_ndiswrapper_deauthenticate(void *priv, const u8 *addr,
 188                                           int reason_code)
 189 {
 190         struct wpa_driver_ndiswrapper_data *drv = priv;
 191         int ret = 0;
 192         struct iwreq priv_req;
 193
 194         os_memset(&priv_req, 0, sizeof(priv_req));
 195
 196         priv_req.u.param.value = reason_code;
 197         os_memcpy(&priv_req.u.ap_addr.sa_data, addr, ETH_ALEN);
 198         if (iw_set_ext(drv, WPA_DEAUTHENTICATE, &priv_req) < 0)
 199                 ret = -1;
 200         return ret;
 201 }
 202
 203 static int wpa_ndiswrapper_disassociate(void *priv, const u8 *addr,
 204                                         int reason_code)
 205 {
 206         struct wpa_driver_ndiswrapper_data *drv = priv;
 207         int ret = 0;
 208         struct iwreq priv_req;
 209
 210         os_memset(&priv_req, 0, sizeof(priv_req));
 211
 212         os_memcpy(&priv_req.u.ap_addr.sa_data, addr, ETH_ALEN);
 213         if (iw_set_ext(drv, WPA_DISASSOCIATE, &priv_req) < 0)
 214                 ret = -1;
 215         return ret;
 216 }
 217
 218 static int
 219 wpa_ndiswrapper_associate(void *priv,
 220                           struct wpa_driver_associate_params *params)
 221 {
 222         struct wpa_driver_ndiswrapper_data *drv = priv;
 223         int ret = 0;
 224         struct wpa_assoc_info wpa_assoc_info;
 225         struct iwreq priv_req;
 226
 227         if (wpa_ndiswrapper_set_drop_unencrypted(drv,
 228                                                  params->drop_unencrypted) < 0)
 229                 ret = -1;
 230         if (wpa_ndiswrapper_set_auth_alg(drv, params->auth_alg) < 0)
 231                 ret = -1;
 232
 233         os_memset(&priv_req, 0, sizeof(priv_req));
 234         os_memset(&wpa_assoc_info, 0, sizeof(wpa_assoc_info));
 235
 236         wpa_assoc_info.bssid = params->bssid;
 237         wpa_assoc_info.ssid = params->ssid;
 238         wpa_assoc_info.ssid_len = params->ssid_len;
 239         wpa_assoc_info.freq = params->freq;
 240         wpa_assoc_info.wpa_ie = params->wpa_ie;
 241         wpa_assoc_info.wpa_ie_len = params->wpa_ie_len;
 242         wpa_assoc_info.pairwise_suite = params->pairwise_suite;
 243         wpa_assoc_info.group_suite = params->group_suite;
 244         wpa_assoc_info.key_mgmt_suite = params->key_mgmt_suite;
 245         wpa_assoc_info.auth_alg = params->auth_alg;
 246         wpa_assoc_info.mode = params->mode;
 247
 248         priv_req.u.data.pointer = (void *)&wpa_assoc_info;
 249         priv_req.u.data.length = sizeof(wpa_assoc_info);
 250
 251         if (iw_set_ext(drv, WPA_ASSOCIATE, &priv_req) < 0)
 252                 ret = -1;
 253         return ret;
 254 }
 255
 256 static int wpa_ndiswrapper_set_auth_alg(void *priv, int auth_alg)
 257 {
 258         struct wpa_driver_ndiswrapper_data *drv = priv;
 259         int ret = 0;
 260         struct iwreq priv_req;
 261
 262         os_memset(&priv_req, 0, sizeof(priv_req));
 263
 264         priv_req.u.param.value = auth_alg;
 265         if (iw_set_ext(drv, WPA_SET_AUTH_ALG, &priv_req) < 0)
 266                 ret = -1;
 267         return ret;
 268 }
 269
 270 static int wpa_ndiswrapper_get_bssid(void *priv, u8 *bssid)
 271 {
 272         struct wpa_driver_ndiswrapper_data *drv = priv;
 273         return wpa_driver_wext_get_bssid(drv->wext, bssid);
 274 }
 275
 276
 277 static int wpa_ndiswrapper_get_ssid(void *priv, u8 *ssid)
 278 {
 279         struct wpa_driver_ndiswrapper_data *drv = priv;
 280         return wpa_driver_wext_get_ssid(drv->wext, ssid);
 281 }
 282
 283
 284 static int wpa_ndiswrapper_scan(void *priv,
 285                                 struct wpa_driver_scan_params *params)
 286 {
 287         struct wpa_driver_ndiswrapper_data *drv = priv;
 288         return wpa_driver_wext_scan(drv->wext, params);
 289 }
 290
 291
 292 static struct wpa_scan_results * wpa_ndiswrapper_get_scan_results(void *priv)
 293 {
 294         struct wpa_driver_ndiswrapper_data *drv = priv;
 295         return wpa_driver_wext_get_scan_results(drv->wext);
 296 }
 297
 298
 299 static int wpa_ndiswrapper_get_capa(void *priv, struct wpa_driver_capa *capa)
 300 {
 301         struct wpa_driver_ndiswrapper_data *drv = priv;
 302         int ret = 0;
 303         struct iwreq priv_req;
 304
 305         os_memset(&priv_req, 0, sizeof(priv_req));
 306
 307         priv_req.u.data.pointer = (void *) capa;
 308         priv_req.u.data.length = sizeof(*capa);
 309         if (iw_set_ext(drv, WPA_GET_CAPA, &priv_req) < 0)
 310                 ret = -1;
 311         return ret;
 312
 313 }
 314
 315
 316 static int wpa_ndiswrapper_set_operstate(void *priv, int state)
 317 {
 318         struct wpa_driver_ndiswrapper_data *drv = priv;
 319         return wpa_driver_wext_set_operstate(drv->wext, state);
 320 }
 321
 322
 323 static void * wpa_ndiswrapper_init(void *ctx, const char *ifname)
 324 {
 325         struct wpa_driver_ndiswrapper_data *drv;
 326
 327         drv = os_zalloc(sizeof(*drv));
 328         if (drv == NULL)
 329                 return NULL;
 330         drv->wext = wpa_driver_wext_init(ctx, ifname);
 331         if (drv->wext == NULL) {
 332                 os_free(drv);
 333                 return NULL;
 334         }
 335
 336         drv->ctx = ctx;
 337         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 338         drv->sock = get_socket();
 339         if (drv->sock < 0) {
 340                 wpa_driver_wext_deinit(drv->wext);
 341                 os_free(drv);
 342                 return NULL;
 343         }
 344
 345         wpa_ndiswrapper_set_wpa(drv, 1);
 346
 347         return drv;
 348 }
 349
 350
 351 static void wpa_ndiswrapper_deinit(void *priv)
 352 {
 353         struct wpa_driver_ndiswrapper_data *drv = priv;
 354         wpa_ndiswrapper_set_wpa(drv, 0);
 355         wpa_driver_wext_deinit(drv->wext);
 356         close(drv->sock);
 357         os_free(drv);
 358 }
 359
 360
 361 const struct wpa_driver_ops wpa_driver_ndiswrapper_ops = {
 362         .name = "ndiswrapper",
 363         .desc = "Linux ndiswrapper (deprecated; use wext)",
 364         .set_key = wpa_ndiswrapper_set_key,
 365         .set_countermeasures = wpa_ndiswrapper_set_countermeasures,
 366         .deauthenticate = wpa_ndiswrapper_deauthenticate,
 367         .disassociate = wpa_ndiswrapper_disassociate,
 368         .associate = wpa_ndiswrapper_associate,
 369
 370         .get_bssid = wpa_ndiswrapper_get_bssid,
 371         .get_ssid = wpa_ndiswrapper_get_ssid,
 372         .scan2 = wpa_ndiswrapper_scan,
 373         .get_scan_results2 = wpa_ndiswrapper_get_scan_results,
 374         .init = wpa_ndiswrapper_init,
 375         .deinit = wpa_ndiswrapper_deinit,
 376         .get_capa = wpa_ndiswrapper_get_capa,
 377         .set_operstate = wpa_ndiswrapper_set_operstate,
 378 };