os_wireless_ext.c

linux下可以用来通过802.1x认证

/**
 * A client-side 802.1x implementation supporting EAP/TLS
 *
 * This code is released under both the GPL version 2 and BSD licenses.
 * Either license may be used.  The respective licenses are found below.
 *
 * Copyright (C) 2002 Bryan D. Payne & Nick L. Petroni Jr.
 * All Rights Reserved
 *
 * --- GPL Version 2 License ---
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * --- BSD License ---
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  - All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *       This product includes software developed by the University of
 *       Maryland at College Park and its contributors.
 *  - Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*******************************************************************
 * The driver function for a Linux application layer EAPOL 
 * implementation
 * File: os_wireless_ext.c
 *
 * Authors: [e-mail], [e-mail]
 *
 * $Id: os_wireless_ext.c,v 1.4 2003/03/05 21:18:46 npetroni Exp $
 * $Date: 2003/03/05 21:18:46 $
 * $Log: os_wireless_ext.c,v $
 * Revision 1.4  2003/03/05 21:18:46  npetroni
 * migration to libdnet. Please notify developers of build problems AFTER doing a cvs update.
 *
 * Revision 1.3  2003/02/27 04:05:58  chessing
 * Added more error checking, fixed a few omissions that have not yet caused bugs. ;)
 *
 * Revision 1.2  2003/01/09 20:17:30  galimorerpg
 * Logging Updates
 *
 * Revision 1.1  2003/01/02 19:35:47  chessing
 * Add some files that were missed in the last import..
 *
 *
 *******************************************************************/

/* This code originally came from eapol-bsd.c */

#include <sys/types.h>
#include <stdlib.h>
#include <sys/param.h>  /* needed to compile; not sure why */
#include <sys/socket.h>  /* needed for if.h and dummy socket */
#include <net/if.h> /* for struct ifreq */
#include <errno.h>
#include <err.h>
#include <string.h>  /* bzero, strlcpy */
#include <unistd.h>  /* close */
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/sockio.h> /* for if_aironet_ieee.h */

#include "logging.h"

#include "if_aironet_ieee.h"
#ifndef __OpenBSD__
#include <net/ethernet.h>
//#include <net/if_ieee80211.h>
#endif

#ifndef __OpenBSD__
static int ieee80211_ioctl(const char *iface, struct ieee80211req *ireq,
                           u_long icall)
{
  int d;
  int s;

  d = socket(AF_INET, SOCK_DGRAM, 0);
  if (d == -1) {
    xlogf(DEBUG_NORMAL, "Error opening socket\n");
    return d;
  }

  s = ioctl(d, icall, &ireq);

  close(d);
  return s;

}
#endif

static int an_ioctl(const char *iface, struct an_req *areq, u_long icall)
{
  struct ifreq req; /* generic interface request */
  int    d; /* dummy socket needed for ioctl */
  int    s; /* status for ioctl */

  bzero((char *) &req, sizeof(struct ifreq));


  strlcpy(req.ifr_name, iface, sizeof(req.ifr_name));  /* strlcpy has bette\
							  r string handling than strncpy */

  req.ifr_data = (caddr_t) areq;

  d = socket(AF_INET, SOCK_DGRAM, 0);
  if(d == -1) {
    xlogf(DEBUG_NORMAL, "Error opening socket\n");
    return d;
  }

  s = ioctl(d, icall, &req);

  //  if(s == -1)
  //    err(1, "SIOCGAIRONET");

  close(d);
  return s;

}

int eapol_wireless_get_bssid(char *dev, u_char *bssid)
{
  struct an_req areq;
  struct an_ltv_status *stat;
  int i,s;

  areq.an_len = sizeof(areq);
  areq.an_type = AN_RID_STATUS;

  s = an_ioctl(dev, &areq, SIOCGAIRONET);

  if(s == -1)
    return s;

  stat = (struct an_ltv_status *) &areq;

  for(i = 0; i < 6; i++)
    {
      bssid[i] = (u_char) stat->an_cur_bssid[i];
    }

#ifdef DEBUG
  xlogf(DEBUG_EVERYTHING, "BSSID = %02x", bssid[0]);
  for(i = 1; i < 6; i++)
    {
      xlogf(DEBUG_EVERYTHING, ":%02x", bssid[i]);
    }
  xlogf(DEBUG_EVERYTHING, "\n");
#endif

  return s;
}


int eapol_wireless_get_ssid(char *dev, u_char *ssid)
{
      struct an_req areq;
      struct an_ltv_status *stat;
      int s;

      areq.an_len = sizeof(areq);
      areq.an_type = AN_RID_STATUS;

      s = an_ioctl(dev, &areq, SIOCGAIRONET);

      if(s == -1)
	return s;

      stat = (struct an_ltv_status *) &areq;

      strlcpy(ssid, stat->an_ssid, stat->an_ssidlen+1);

#ifdef DEBUG
      xlogf(DEBUG_EVERYTHING, "SSID = %s, length = %d \n", ssid, stat->an_ssidlen);
#endif

      return s;

}


int eapol_wireless_set_key(char *dev, u_char *key, int klen, int index)
{
   struct an_req areq;
   struct an_ltv_key *theKey;
   int s;


   /* zero out the key */
   memset((char *)&areq, 0, sizeof(areq));
   theKey = (struct an_ltv_key *)&areq;

   memcpy(theKey->key, key, klen);
   theKey->kindex = (index & 0x7f);
   theKey->klen = klen;
   theKey->mac[0] = 1;
   theKey->mac[1] = 0;
   theKey->mac[2] = 0;
   theKey->mac[3] = 0;
   theKey->mac[4] = 0;
   theKey->mac[5] = 0;


   areq.an_len = sizeof(struct an_ltv_key);
   areq.an_type = AN_RID_WEP_PERM;

   s = an_ioctl(dev, &areq, SIOCSAIRONET);

   if (s == -1) {
     xlogf(DEBUG_NORMAL, "Failed to set WEP key\n");
     return s;
   }

   xlogf(DEBUG_NORMAL, "Successfully set WEP key %d\n", (index & 0x7f));


   if (index & 0x80) {
     memset((char *)&areq, 0, sizeof(areq));
     theKey = (struct an_ltv_key *)&areq;

     //    memcpy(theKey->key, key, klen);
     theKey->kindex = 0xffff;
     theKey->klen = 0;
     theKey->mac[0] = (index & 0x7f);

     areq.an_len = sizeof(struct an_ltv_key);
     areq.an_type = AN_RID_WEP_PERM;

     s = an_ioctl(dev, &areq, SIOCSAIRONET);
     if (s != -1) {
       xlogf(DEBUG_NORMAL, "Successfully set transmit key %d\n", (index & 0x7f));
     }
   }

   return s;

}

// We don't need to do anything here for BSD.
int eapol_wireless_init()
{
  return 0;
}

// We don't need to do anything here for BSD.
int eapol_wireless_cleanup()
{
  return 0;
}