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

   1 /*
   2  * WPA Supplicant - Driver interaction with Atmel Wireless LAN drivers
   3  * Copyright (c) 2000-2005, ATMEL Corporation
   4  * Copyright (c) 2004-2007, 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 /******************************************************************************
  17         Copyright 2000-2001 ATMEL Corporation.
  18
  19     WPA Supplicant - driver interaction with Atmel Wireless lan drivers.
  20
  21     This is free software; you can redistribute it and/or modify
  22     it under the terms of the GNU General Public License as published by
  23     the Free Software Foundation; either version 2 of the License, or
  24     (at your option) any later version.
  25
  26     This program is distributed in the hope that it will be useful,
  27     but WITHOUT ANY WARRANTY; without even the implied warranty of
  28     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  29     GNU General Public License for more details.
  30
  31     You should have received a copy of the GNU General Public License
  32     along with Atmel wireless lan drivers; if not, write to the Free Software
  33     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  34
  35 ******************************************************************************/
  36
  37 /*
  38  * Alternatively, this software may be distributed under the terms of BSD
  39  * license.
  40  */
  41
  42 #include "includes.h"
  43 #include <sys/ioctl.h>
  44
  45 #include "wireless_copy.h"
  46 #include "common.h"
  47 #include "driver.h"
  48 #include "driver_wext.h"
  49
  50 struct wpa_driver_atmel_data {
  51         void *wext; /* private data for driver_wext */
  52         void *ctx;
  53         char ifname[IFNAMSIZ + 1];
  54         int sock;
  55 };
  56
  57
  58 #define ATMEL_WPA_IOCTL                (SIOCIWFIRSTPRIV + 2)
  59 #define ATMEL_WPA_IOCTL_PARAM          (SIOCIWFIRSTPRIV + 3)
  60 #define ATMEL_WPA_IOCTL_GET_PARAM      (SIOCIWFIRSTPRIV + 4)
  61
  62
  63 /* ATMEL_WPA_IOCTL ioctl() cmd: */
  64 enum {
  65     SET_WPA_ENCRYPTION  = 1,
  66     SET_CIPHER_SUITES   = 2,
  67     MLME_STA_DEAUTH     = 3,
  68     MLME_STA_DISASSOC   = 4
  69 };
  70
  71 /* ATMEL_WPA_IOCTL_PARAM ioctl() cmd: */
  72 enum {
  73             ATMEL_PARAM_WPA = 1,
  74             ATMEL_PARAM_PRIVACY_INVOKED = 2,
  75             ATMEL_PARAM_WPA_TYPE = 3
  76 };
  77
  78 #define MAX_KEY_LENGTH      40
  79
  80 struct atmel_param{
  81     unsigned char sta_addr[6];
  82         int     cmd;
  83         u8      alg;
  84         u8      key_idx;
  85         u8      set_tx;
  86         u8      seq[8];
  87         u8      seq_len;
  88         u16     key_len;
  89         u8      key[MAX_KEY_LENGTH];
  90     struct{
  91         int     reason_code;
  92         u8      state;
  93     }mlme;
  94     u8          pairwise_suite;
  95     u8          group_suite;
  96     u8          key_mgmt_suite;
  97 };
  98
  99
 100
 101 static int atmel_ioctl(struct wpa_driver_atmel_data *drv,
 102                        struct atmel_param *param,
 103                        int len, int show_err)
 104 {
 105         struct iwreq iwr;
 106
 107         os_memset(&iwr, 0, sizeof(iwr));
 108         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 109         iwr.u.data.pointer = (caddr_t) param;
 110         iwr.u.data.length = len;
 111
 112         if (ioctl(drv->sock, ATMEL_WPA_IOCTL, &iwr) < 0) {
 113                 int ret;
 114                 ret = errno;
 115                 if (show_err)
 116                         perror("ioctl[ATMEL_WPA_IOCTL]");
 117                 return ret;
 118         }
 119
 120         return 0;
 121 }
 122
 123
 124 static int atmel2param(struct wpa_driver_atmel_data *drv, int param, int value)
 125 {
 126         struct iwreq iwr;
 127         int *i, ret = 0;
 128
 129         os_memset(&iwr, 0, sizeof(iwr));
 130         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 131         i = (int *) iwr.u.name;
 132         *i++ = param;
 133         *i++ = value;
 134
 135         if (ioctl(drv->sock, ATMEL_WPA_IOCTL_PARAM, &iwr) < 0) {
 136                 perror("ioctl[ATMEL_WPA_IOCTL_PARAM]");
 137                 ret = -1;
 138         }
 139         return ret;
 140 }
 141
 142
 143 #if 0
 144 static int wpa_driver_atmel_set_wpa_ie(struct wpa_driver_atmel_data *drv,
 145                                        const char *wpa_ie, size_t wpa_ie_len)
 146 {
 147         struct atmel_param *param;
 148         int res;
 149         size_t blen = ATMEL_GENERIC_ELEMENT_HDR_LEN + wpa_ie_len;
 150         if (blen < sizeof(*param))
 151                 blen = sizeof(*param);
 152
 153         param = os_zalloc(blen);
 154         if (param == NULL)
 155                 return -1;
 156
 157         param->cmd = ATMEL_SET_GENERIC_ELEMENT;
 158         param->u.generic_elem.len = wpa_ie_len;
 159         os_memcpy(param->u.generic_elem.data, wpa_ie, wpa_ie_len);
 160         res = atmel_ioctl(drv, param, blen, 1);
 161
 162         os_free(param);
 163
 164         return res;
 165 }
 166 #endif
 167
 168
 169 static int wpa_driver_atmel_set_wpa(void *priv, int enabled)
 170 {
 171         struct wpa_driver_atmel_data *drv = priv;
 172         int ret = 0;
 173
 174         printf("wpa_driver_atmel_set_wpa %s\n", drv->ifname);
 175
 176         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 177
 178 #if 0
 179         if (!enabled && wpa_driver_atmel_set_wpa_ie(drv, NULL, 0) < 0)
 180                 ret = -1;
 181 #endif
 182         if (atmel2param(drv, ATMEL_PARAM_PRIVACY_INVOKED, enabled) < 0)
 183                 ret = -1;
 184         if (atmel2param(drv, ATMEL_PARAM_WPA, enabled) < 0)
 185                 ret = -1;
 186
 187         return ret;
 188 }
 189
 190
 191 static int wpa_driver_atmel_set_key(const char *ifname, void *priv,
 192                                     enum wpa_alg alg, const u8 *addr,
 193                                     int key_idx, int set_tx,
 194                                     const u8 *seq, size_t seq_len,
 195                                     const u8 *key, size_t key_len)
 196 {
 197         struct wpa_driver_atmel_data *drv = priv;
 198         int ret = 0;
 199         struct atmel_param *param;
 200         u8 *buf;
 201         u8 alg_type;
 202
 203         size_t blen;
 204         char *alg_name;
 205
 206         switch (alg) {
 207         case WPA_ALG_NONE:
 208                 alg_name = "none";
 209                 alg_type = 0;
 210                 break;
 211         case WPA_ALG_WEP:
 212                 alg_name = "WEP";
 213                 alg_type = 1;
 214                 break;
 215         case WPA_ALG_TKIP:
 216                 alg_name = "TKIP";
 217                 alg_type = 2;
 218                 break;
 219         case WPA_ALG_CCMP:
 220                 alg_name = "CCMP";
 221                 alg_type = 3;
 222                 break;
 223         default:
 224                 return -1;
 225         }
 226
 227         wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
 228                    "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
 229                    (unsigned long) seq_len, (unsigned long) key_len);
 230
 231         if (seq_len > 8)
 232                 return -2;
 233
 234         blen = sizeof(*param) + key_len;
 235         buf = os_zalloc(blen);
 236         if (buf == NULL)
 237                 return -1;
 238
 239         param = (struct atmel_param *) buf;
 240
 241         param->cmd = SET_WPA_ENCRYPTION;
 242
 243         if (addr == NULL)
 244                 os_memset(param->sta_addr, 0xff, ETH_ALEN);
 245         else
 246                 os_memcpy(param->sta_addr, addr, ETH_ALEN);
 247
 248         param->alg = alg_type;
 249         param->key_idx = key_idx;
 250         param->set_tx = set_tx;
 251         os_memcpy(param->seq, seq, seq_len);
 252         param->seq_len = seq_len;
 253         param->key_len = key_len;
 254         os_memcpy((u8 *)param->key, key, key_len);
 255
 256         if (atmel_ioctl(drv, param, blen, 1)) {
 257                 wpa_printf(MSG_WARNING, "Failed to set encryption.");
 258                 /* TODO: show key error*/
 259                 ret = -1;
 260         }
 261         os_free(buf);
 262
 263         return ret;
 264 }
 265
 266
 267 static int wpa_driver_atmel_set_countermeasures(void *priv,
 268                                                  int enabled)
 269 {
 270         /* FIX */
 271         printf("wpa_driver_atmel_set_countermeasures - not yet "
 272                "implemented\n");
 273         return 0;
 274 }
 275
 276
 277 static int wpa_driver_atmel_mlme(void *priv, const u8 *addr, int cmd,
 278                                  int reason_code)
 279 {
 280         struct wpa_driver_atmel_data *drv = priv;
 281         struct atmel_param param;
 282         int ret;
 283         int mgmt_error = 0xaa;
 284
 285         os_memset(&param, 0, sizeof(param));
 286         os_memcpy(param.sta_addr, addr, ETH_ALEN);
 287         param.cmd = cmd;
 288         param.mlme.reason_code = reason_code;
 289         param.mlme.state = mgmt_error;
 290         ret = atmel_ioctl(drv, &param, sizeof(param), 1);
 291         return ret;
 292 }
 293
 294
 295 #if 0
 296 static int wpa_driver_atmel_set_suites(struct wpa_driver_atmel_data *drv,
 297                                        u8 pairwise_suite, u8 group_suite,
 298                                        u8 key_mgmt_suite)
 299 {
 300         struct atmel_param param;
 301         int ret;
 302
 303         os_memset(&param, 0, sizeof(param));
 304         param.cmd = SET_CIPHER_SUITES;
 305         param.pairwise_suite = pairwise_suite;
 306         param.group_suite = group_suite;
 307         param.key_mgmt_suite = key_mgmt_suite;
 308
 309         ret = atmel_ioctl(drv, &param, sizeof(param), 1);
 310         return ret;
 311 }
 312 #endif
 313
 314
 315 static int wpa_driver_atmel_deauthenticate(void *priv, const u8 *addr,
 316                                            int reason_code)
 317 {
 318         struct wpa_driver_atmel_data *drv = priv;
 319         printf("wpa_driver_atmel_deauthenticate\n");
 320         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
 321         return wpa_driver_atmel_mlme(drv, addr, MLME_STA_DEAUTH,
 322                                      reason_code);
 323
 324 }
 325
 326
 327 static int wpa_driver_atmel_disassociate(void *priv, const u8 *addr,
 328                                          int reason_code)
 329 {
 330         struct wpa_driver_atmel_data *drv = priv;
 331         printf("wpa_driver_atmel_disassociate\n");
 332         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
 333         return wpa_driver_atmel_mlme(drv, addr, MLME_STA_DISASSOC,
 334                                      reason_code);
 335
 336 }
 337
 338
 339 #if 0
 340 /* Atmel driver uses specific values for each cipher suite */
 341 static int convertSuiteToDriver(enum wpa_cipher suite)
 342 {
 343     u8 suite_type;
 344
 345     switch(suite) {
 346         case CIPHER_NONE:
 347                 suite_type =  0;
 348                 break;
 349         case CIPHER_WEP40:
 350                 suite_type =  1;
 351                 break;
 352         case CIPHER_TKIP:
 353                 suite_type = 2;
 354                 break;
 355         case CIPHER_WEP104:
 356                 suite_type = 5;
 357                 break;
 358         case CIPHER_CCMP:
 359                 suite_type = 3;
 360                 break;
 361         default:
 362                 suite_type = 2;
 363     }
 364
 365     return suite_type;
 366
 367 }
 368 #endif
 369
 370 static int
 371 wpa_driver_atmel_associate(void *priv,
 372                            struct wpa_driver_associate_params *params)
 373 {
 374         struct wpa_driver_atmel_data *drv = priv;
 375         int ret = 0;
 376 #if 0
 377         u8 pairwise_suite_driver;
 378         u8 group_suite_driver;
 379         u8 key_mgmt_suite_driver;
 380
 381         pairwise_suite_driver = convertSuiteToDriver(params->pairwise_suite);
 382         group_suite_driver    = convertSuiteToDriver(params->group_suite);
 383         key_mgmt_suite_driver = convertSuiteToDriver(params->key_mgmt_suite);
 384
 385         if (wpa_driver_atmel_set_suites(drv, pairwise_suite_driver,
 386                                         group_suite_driver,
 387                                         key_mgmt_suite_driver) < 0){
 388                 printf("wpa_driver_atmel_set_suites.\n");
 389                 ret = -1;
 390         }
 391         if (wpa_driver_wext_set_freq(drv->wext, params->freq) < 0) {
 392                 printf("wpa_driver_atmel_set_freq.\n");
 393                 ret = -1;
 394         }
 395 #endif
 396         if (wpa_driver_wext_set_ssid(drv->wext, params->ssid, params->ssid_len)
 397             < 0) {
 398                 printf("FAILED : wpa_driver_atmel_set_ssid.\n");
 399                 ret = -1;
 400         }
 401         if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0) {
 402                 printf("FAILED : wpa_driver_atmel_set_bssid.\n");
 403                 ret = -1;
 404         }
 405
 406         return ret;
 407 }
 408
 409
 410 static int wpa_driver_atmel_get_bssid(void *priv, u8 *bssid)
 411 {
 412         struct wpa_driver_atmel_data *drv = priv;
 413         return wpa_driver_wext_get_bssid(drv->wext, bssid);
 414 }
 415
 416
 417 static int wpa_driver_atmel_get_ssid(void *priv, u8 *ssid)
 418 {
 419         struct wpa_driver_atmel_data *drv = priv;
 420         return wpa_driver_wext_get_ssid(drv->wext, ssid);
 421 }
 422
 423
 424 static int wpa_driver_atmel_scan(void *priv,
 425                                  struct wpa_driver_scan_params *params)
 426 {
 427         struct wpa_driver_atmel_data *drv = priv;
 428         return wpa_driver_wext_scan(drv->wext, params);
 429 }
 430
 431
 432 static struct wpa_scan_results * wpa_driver_atmel_get_scan_results(void *priv)
 433 {
 434         struct wpa_driver_atmel_data *drv = priv;
 435         return wpa_driver_wext_get_scan_results(drv->wext);
 436 }
 437
 438
 439 static int wpa_driver_atmel_set_operstate(void *priv, int state)
 440 {
 441         struct wpa_driver_atmel_data *drv = priv;
 442         return wpa_driver_wext_set_operstate(drv->wext, state);
 443 }
 444
 445
 446 static void * wpa_driver_atmel_init(void *ctx, const char *ifname)
 447 {
 448         struct wpa_driver_atmel_data *drv;
 449
 450         drv = os_zalloc(sizeof(*drv));
 451         if (drv == NULL)
 452                 return NULL;
 453         drv->wext = wpa_driver_wext_init(ctx, ifname);
 454         if (drv->wext == NULL) {
 455                 os_free(drv);
 456                 return NULL;
 457         }
 458
 459         drv->ctx = ctx;
 460         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 461         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
 462         if (drv->sock < 0) {
 463                 wpa_driver_wext_deinit(drv->wext);
 464                 os_free(drv);
 465                 return NULL;
 466         }
 467
 468         wpa_driver_atmel_set_wpa(drv, 1);
 469
 470         return drv;
 471 }
 472
 473
 474 static void wpa_driver_atmel_deinit(void *priv)
 475 {
 476         struct wpa_driver_atmel_data *drv = priv;
 477         wpa_driver_atmel_set_wpa(drv, 0);
 478         wpa_driver_wext_deinit(drv->wext);
 479         close(drv->sock);
 480         os_free(drv);
 481 }
 482
 483
 484 const struct wpa_driver_ops wpa_driver_atmel_ops = {
 485         .name = "atmel",
 486         .desc = "ATMEL AT76C5XXx (USB, PCMCIA)",
 487         .get_bssid = wpa_driver_atmel_get_bssid,
 488         .get_ssid = wpa_driver_atmel_get_ssid,
 489         .set_key = wpa_driver_atmel_set_key,
 490         .init = wpa_driver_atmel_init,
 491         .deinit = wpa_driver_atmel_deinit,
 492         .set_countermeasures = wpa_driver_atmel_set_countermeasures,
 493         .scan2 = wpa_driver_atmel_scan,
 494         .get_scan_results2 = wpa_driver_atmel_get_scan_results,
 495         .deauthenticate = wpa_driver_atmel_deauthenticate,
 496         .disassociate = wpa_driver_atmel_disassociate,
 497         .associate = wpa_driver_atmel_associate,
 498         .set_operstate = wpa_driver_atmel_set_operstate,
 499 };