![Andres More](/assets/img/avatar_default.png)
Warnings about the usage of externs in .c files were not resolved here. Signed-off-by: Andres More <more.andres@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
317 lines
9.9 KiB
C
317 lines
9.9 KiB
C
/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*
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* File: wpa.c
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*
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* Purpose: Handles the Basic Service Set & Node Database functions
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*
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* Functions:
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* WPA_ParseRSN - Parse RSN IE.
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*
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* Revision History:
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*
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* Author: Kyle Hsu
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*
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* Date: July 14, 2003
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*
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*/
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#include "ttype.h"
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#include "tmacro.h"
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#include "tether.h"
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#include "device.h"
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#include "80211hdr.h"
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#include "bssdb.h"
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#include "wmgr.h"
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#include "wpa.h"
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#include "80211mgr.h"
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/*--------------------- Static Variables --------------------------*/
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static int msglevel =MSG_LEVEL_INFO;
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const BYTE abyOUI00[4] = { 0x00, 0x50, 0xf2, 0x00 };
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const BYTE abyOUI01[4] = { 0x00, 0x50, 0xf2, 0x01 };
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const BYTE abyOUI02[4] = { 0x00, 0x50, 0xf2, 0x02 };
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const BYTE abyOUI03[4] = { 0x00, 0x50, 0xf2, 0x03 };
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const BYTE abyOUI04[4] = { 0x00, 0x50, 0xf2, 0x04 };
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const BYTE abyOUI05[4] = { 0x00, 0x50, 0xf2, 0x05 };
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/*+
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*
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* Description:
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* Clear RSN information in BSSList.
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*
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* Parameters:
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* In:
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* pBSSList - BSS list.
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* Out:
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* none
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*
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* Return Value: none.
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*
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-*/
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void
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WPA_ClearRSN (
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PKnownBSS pBSSList
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)
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{
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int ii;
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pBSSList->byGKType = WPA_TKIP;
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for (ii=0; ii < 4; ii ++)
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pBSSList->abyPKType[ii] = WPA_TKIP;
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pBSSList->wPKCount = 0;
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for (ii=0; ii < 4; ii ++)
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pBSSList->abyAuthType[ii] = WPA_AUTH_IEEE802_1X;
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pBSSList->wAuthCount = 0;
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pBSSList->byDefaultK_as_PK = 0;
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pBSSList->byReplayIdx = 0;
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pBSSList->sRSNCapObj.bRSNCapExist = FALSE;
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pBSSList->sRSNCapObj.wRSNCap = 0;
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pBSSList->bWPAValid = FALSE;
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}
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/*+
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*
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* Description:
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* Parse RSN IE.
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*
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* Parameters:
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* In:
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* pBSSList - BSS list.
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* pRSN - Pointer to the RSN IE.
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* Out:
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* none
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*
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* Return Value: none.
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*
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-*/
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void
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WPA_ParseRSN (
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PKnownBSS pBSSList,
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PWLAN_IE_RSN_EXT pRSN
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)
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{
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PWLAN_IE_RSN_AUTH pIE_RSN_Auth = NULL;
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int i, j, m, n = 0;
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PBYTE pbyCaps;
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WPA_ClearRSN(pBSSList);
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WPA_ParseRSN: [%d]\n", pRSN->len);
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// information element header makes sense
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if ((pRSN->len >= 6) // oui1(4)+ver(2)
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&& (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4)
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&& (pRSN->wVersion == 1)) {
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Legal RSN\n");
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// update each variable if pRSN is long enough to contain the variable
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if (pRSN->len >= 10) //oui1(4)+ver(2)+GKSuite(4)
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{
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if ( !memcmp(pRSN->abyMulticast, abyOUI01, 4))
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pBSSList->byGKType = WPA_WEP40;
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else if ( !memcmp(pRSN->abyMulticast, abyOUI02, 4))
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pBSSList->byGKType = WPA_TKIP;
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else if ( !memcmp(pRSN->abyMulticast, abyOUI03, 4))
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pBSSList->byGKType = WPA_AESWRAP;
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else if ( !memcmp(pRSN->abyMulticast, abyOUI04, 4))
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pBSSList->byGKType = WPA_AESCCMP;
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else if ( !memcmp(pRSN->abyMulticast, abyOUI05, 4))
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pBSSList->byGKType = WPA_WEP104;
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else
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// any vendor checks here
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pBSSList->byGKType = WPA_NONE;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"byGKType: %x\n", pBSSList->byGKType);
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}
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if (pRSN->len >= 12) //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)
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{
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j = 0;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d, sizeof(pBSSList->abyPKType): %zu\n", pRSN->wPKCount, sizeof(pBSSList->abyPKType));
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for(i = 0; (i < pRSN->wPKCount) && (j < sizeof(pBSSList->abyPKType)/sizeof(BYTE)); i++) {
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if(pRSN->len >= 12+i*4+4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*i)
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if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI00, 4))
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pBSSList->abyPKType[j++] = WPA_NONE;
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else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI02, 4))
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pBSSList->abyPKType[j++] = WPA_TKIP;
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else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI03, 4))
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pBSSList->abyPKType[j++] = WPA_AESWRAP;
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else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI04, 4))
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pBSSList->abyPKType[j++] = WPA_AESCCMP;
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else
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// any vendor checks here
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;
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}
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else
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break;
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//DBG_PRN_GRP14(("abyPKType[%d]: %X\n", j-1, pBSSList->abyPKType[j-1]));
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} //for
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pBSSList->wPKCount = (WORD)j;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d\n", pBSSList->wPKCount);
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}
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m = pRSN->wPKCount;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"m: %d\n", m);
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"14+m*4: %d\n", 14+m*4);
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if (pRSN->len >= 14+m*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)
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// overlay IE_RSN_Auth structure into correct place
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pIE_RSN_Auth = (PWLAN_IE_RSN_AUTH) pRSN->PKSList[m].abyOUI;
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j = 0;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d, sizeof(pBSSList->abyAuthType): %zu\n",
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pIE_RSN_Auth->wAuthCount, sizeof(pBSSList->abyAuthType));
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for(i = 0; (i < pIE_RSN_Auth->wAuthCount) && (j < sizeof(pBSSList->abyAuthType)/sizeof(BYTE)); i++) {
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if(pRSN->len >= 14+4+(m+i)*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)+AKS(4*i)
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if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI01, 4))
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pBSSList->abyAuthType[j++] = WPA_AUTH_IEEE802_1X;
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else if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI02, 4))
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pBSSList->abyAuthType[j++] = WPA_AUTH_PSK;
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else
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// any vendor checks here
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;
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}
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else
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break;
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//DBG_PRN_GRP14(("abyAuthType[%d]: %X\n", j-1, pBSSList->abyAuthType[j-1]));
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}
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if(j > 0)
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pBSSList->wAuthCount = (WORD)j;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d\n", pBSSList->wAuthCount);
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}
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if (pIE_RSN_Auth != NULL) {
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n = pIE_RSN_Auth->wAuthCount;
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"n: %d\n", n);
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"14+4+(m+n)*4: %d\n", 14+4+(m+n)*4);
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if(pRSN->len+2 >= 14+4+(m+n)*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)+AKS(4*n)+Cap(2)
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pbyCaps = (PBYTE)pIE_RSN_Auth->AuthKSList[n].abyOUI;
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pBSSList->byDefaultK_as_PK = (*pbyCaps) & WPA_GROUPFLAG;
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pBSSList->byReplayIdx = 2 << ((*pbyCaps >> WPA_REPLAYBITSSHIFT) & WPA_REPLAYBITS);
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pBSSList->sRSNCapObj.bRSNCapExist = TRUE;
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pBSSList->sRSNCapObj.wRSNCap = *(PWORD)pbyCaps;
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//DBG_PRN_GRP14(("pbyCaps: %X\n", *pbyCaps));
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//DBG_PRN_GRP14(("byDefaultK_as_PK: %X\n", pBSSList->byDefaultK_as_PK));
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//DBG_PRN_GRP14(("byReplayIdx: %X\n", pBSSList->byReplayIdx));
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}
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}
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pBSSList->bWPAValid = TRUE;
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}
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}
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/*+
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*
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* Description:
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* Search RSN information in BSSList.
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*
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* Parameters:
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* In:
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* byCmd - Search type
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* byEncrypt- Encrcypt Type
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* pBSSList - BSS list
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* Out:
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* none
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*
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* Return Value: none.
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*
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-*/
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BOOL
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WPA_SearchRSN (
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BYTE byCmd,
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BYTE byEncrypt,
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PKnownBSS pBSSList
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)
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{
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int ii;
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BYTE byPKType = WPA_NONE;
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if (pBSSList->bWPAValid == FALSE)
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return FALSE;
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switch(byCmd) {
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case 0:
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if (byEncrypt != pBSSList->byGKType)
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return FALSE;
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if (pBSSList->wPKCount > 0) {
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for (ii = 0; ii < pBSSList->wPKCount; ii ++) {
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if (pBSSList->abyPKType[ii] == WPA_AESCCMP)
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byPKType = WPA_AESCCMP;
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else if ((pBSSList->abyPKType[ii] == WPA_TKIP) && (byPKType != WPA_AESCCMP))
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byPKType = WPA_TKIP;
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else if ((pBSSList->abyPKType[ii] == WPA_WEP40) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP))
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byPKType = WPA_WEP40;
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else if ((pBSSList->abyPKType[ii] == WPA_WEP104) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP))
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byPKType = WPA_WEP104;
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}
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if (byEncrypt != byPKType)
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return FALSE;
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}
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return TRUE;
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// if (pBSSList->wAuthCount > 0)
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// for (ii=0; ii < pBSSList->wAuthCount; ii ++)
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// if (byAuth == pBSSList->abyAuthType[ii])
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// break;
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break;
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default:
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break;
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}
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return FALSE;
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}
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/*+
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*
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* Description:
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* Check if RSN IE makes sense.
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*
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* Parameters:
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* In:
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* pRSN - Pointer to the RSN IE.
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* Out:
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* none
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*
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* Return Value: none.
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*
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-*/
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BOOL
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WPAb_Is_RSN (
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PWLAN_IE_RSN_EXT pRSN
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)
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{
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if (pRSN == NULL)
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return FALSE;
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if ((pRSN->len >= 6) && // oui1(4)+ver(2)
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(pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) &&
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(pRSN->wVersion == 1)) {
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return TRUE;
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}
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else
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return FALSE;
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}
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