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Diffstat (limited to 'drivers/staging/vt6655/wpa.c')
-rw-r--r--drivers/staging/vt6655/wpa.c300
1 files changed, 300 insertions, 0 deletions
diff --git a/drivers/staging/vt6655/wpa.c b/drivers/staging/vt6655/wpa.c
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index 00000000000..9be59c23d7e
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+++ b/drivers/staging/vt6655/wpa.c
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+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *
+ * File: wpa.c
+ *
+ * Purpose: Handles the Basic Service Set & Node Database functions
+ *
+ * Functions:
+ * WPA_ParseRSN - Parse RSN IE.
+ *
+ * Revision History:
+ *
+ * Author: Kyle Hsu
+ *
+ * Date: July 14, 2003
+ *
+ */
+
+#include "ttype.h"
+#include "tmacro.h"
+#include "tether.h"
+#include "device.h"
+#include "80211hdr.h"
+#include "bssdb.h"
+#include "wmgr.h"
+#include "wpa.h"
+#include "80211mgr.h"
+
+/*--------------------- Static Variables --------------------------*/
+static int msglevel = MSG_LEVEL_INFO;
+
+static const unsigned char abyOUI00[4] = { 0x00, 0x50, 0xf2, 0x00 };
+static const unsigned char abyOUI01[4] = { 0x00, 0x50, 0xf2, 0x01 };
+static const unsigned char abyOUI02[4] = { 0x00, 0x50, 0xf2, 0x02 };
+static const unsigned char abyOUI03[4] = { 0x00, 0x50, 0xf2, 0x03 };
+static const unsigned char abyOUI04[4] = { 0x00, 0x50, 0xf2, 0x04 };
+static const unsigned char abyOUI05[4] = { 0x00, 0x50, 0xf2, 0x05 };
+
+/*+
+ *
+ * Description:
+ * Clear RSN information in BSSList.
+ *
+ * Parameters:
+ * In:
+ * pBSSList - BSS list.
+ * Out:
+ * none
+ *
+ * Return Value: none.
+ *
+ -*/
+
+void
+WPA_ClearRSN(
+ PKnownBSS pBSSList
+)
+{
+ int ii;
+ pBSSList->byGKType = WPA_TKIP;
+ for (ii = 0; ii < 4; ii++)
+ pBSSList->abyPKType[ii] = WPA_TKIP;
+ pBSSList->wPKCount = 0;
+ for (ii = 0; ii < 4; ii++)
+ pBSSList->abyAuthType[ii] = WPA_AUTH_IEEE802_1X;
+ pBSSList->wAuthCount = 0;
+ pBSSList->byDefaultK_as_PK = 0;
+ pBSSList->byReplayIdx = 0;
+ pBSSList->sRSNCapObj.bRSNCapExist = false;
+ pBSSList->sRSNCapObj.wRSNCap = 0;
+ pBSSList->bWPAValid = false;
+}
+
+/*+
+ *
+ * Description:
+ * Parse RSN IE.
+ *
+ * Parameters:
+ * In:
+ * pBSSList - BSS list.
+ * pRSN - Pointer to the RSN IE.
+ * Out:
+ * none
+ *
+ * Return Value: none.
+ *
+ -*/
+void
+WPA_ParseRSN(
+ PKnownBSS pBSSList,
+ PWLAN_IE_RSN_EXT pRSN
+)
+{
+ PWLAN_IE_RSN_AUTH pIE_RSN_Auth = NULL;
+ int i, j, m, n = 0;
+ unsigned char *pbyCaps;
+
+ WPA_ClearRSN(pBSSList);
+
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "WPA_ParseRSN: [%d]\n", pRSN->len);
+
+ // information element header makes sense
+ if ((pRSN->len >= 6) // oui1(4)+ver(2)
+ && (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4)
+ && (pRSN->wVersion == 1)) {
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Legal RSN\n");
+ // update each variable if pRSN is long enough to contain the variable
+ if (pRSN->len >= 10) //oui1(4)+ver(2)+GKSuite(4)
+ {
+ if (!memcmp(pRSN->abyMulticast, abyOUI01, 4))
+ pBSSList->byGKType = WPA_WEP40;
+ else if (!memcmp(pRSN->abyMulticast, abyOUI02, 4))
+ pBSSList->byGKType = WPA_TKIP;
+ else if (!memcmp(pRSN->abyMulticast, abyOUI03, 4))
+ pBSSList->byGKType = WPA_AESWRAP;
+ else if (!memcmp(pRSN->abyMulticast, abyOUI04, 4))
+ pBSSList->byGKType = WPA_AESCCMP;
+ else if (!memcmp(pRSN->abyMulticast, abyOUI05, 4))
+ pBSSList->byGKType = WPA_WEP104;
+ else
+ // any vendor checks here
+ pBSSList->byGKType = WPA_NONE;
+
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "byGKType: %x\n", pBSSList->byGKType);
+ }
+
+ if (pRSN->len >= 12) //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)
+ {
+ j = 0;
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wPKCount: %d, sizeof(pBSSList->abyPKType): %zu\n", pRSN->wPKCount, sizeof(pBSSList->abyPKType));
+ for (i = 0; (i < pRSN->wPKCount) && (j < ARRAY_SIZE(pBSSList->abyPKType)); i++) {
+ if (pRSN->len >= 12+i*4+4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*i)
+ if (!memcmp(pRSN->PKSList[i].abyOUI, abyOUI00, 4))
+ pBSSList->abyPKType[j++] = WPA_NONE;
+ else if (!memcmp(pRSN->PKSList[i].abyOUI, abyOUI02, 4))
+ pBSSList->abyPKType[j++] = WPA_TKIP;
+ else if (!memcmp(pRSN->PKSList[i].abyOUI, abyOUI03, 4))
+ pBSSList->abyPKType[j++] = WPA_AESWRAP;
+ else if (!memcmp(pRSN->PKSList[i].abyOUI, abyOUI04, 4))
+ pBSSList->abyPKType[j++] = WPA_AESCCMP;
+ else
+ // any vendor checks here
+ ;
+ } else
+ break;
+ }
+ pBSSList->wPKCount = (unsigned short)j;
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wPKCount: %d\n", pBSSList->wPKCount);
+ }
+
+ m = pRSN->wPKCount;
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "m: %d\n", m);
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "14+m*4: %d\n", 14+m*4);
+
+ if (pRSN->len >= 14+m*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)
+ // overlay IE_RSN_Auth structure into correct place
+ pIE_RSN_Auth = (PWLAN_IE_RSN_AUTH) pRSN->PKSList[m].abyOUI;
+ j = 0;
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wAuthCount: %d, sizeof(pBSSList->abyAuthType): %zu\n",
+ pIE_RSN_Auth->wAuthCount, sizeof(pBSSList->abyAuthType));
+ for (i = 0; (i < pIE_RSN_Auth->wAuthCount) && (j < ARRAY_SIZE(pBSSList->abyAuthType)); i++) {
+ if (pRSN->len >= 14+4+(m+i)*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)+AKS(4*i)
+ if (!memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI01, 4))
+ pBSSList->abyAuthType[j++] = WPA_AUTH_IEEE802_1X;
+ else if (!memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI02, 4))
+ pBSSList->abyAuthType[j++] = WPA_AUTH_PSK;
+ else
+ // any vendor checks here
+ ;
+ } else
+ break;
+
+ }
+ if (j > 0)
+ pBSSList->wAuthCount = (unsigned short)j;
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wAuthCount: %d\n", pBSSList->wAuthCount);
+ }
+
+ if (pIE_RSN_Auth != NULL) {
+ n = pIE_RSN_Auth->wAuthCount;
+
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "n: %d\n", n);
+ DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "14+4+(m+n)*4: %d\n", 14+4+(m+n)*4);
+
+ 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)
+ pbyCaps = (unsigned char *)pIE_RSN_Auth->AuthKSList[n].abyOUI;
+ pBSSList->byDefaultK_as_PK = (*pbyCaps) & WPA_GROUPFLAG;
+ pBSSList->byReplayIdx = 2 << ((*pbyCaps >> WPA_REPLAYBITSSHIFT) & WPA_REPLAYBITS);
+ pBSSList->sRSNCapObj.bRSNCapExist = true;
+ pBSSList->sRSNCapObj.wRSNCap = *(unsigned short *)pbyCaps;
+ }
+ }
+ pBSSList->bWPAValid = true;
+ }
+}
+
+/*+
+ *
+ * Description:
+ * Search RSN information in BSSList.
+ *
+ * Parameters:
+ * In:
+ * byCmd - Search type
+ * byEncrypt- Encrypt Type
+ * pBSSList - BSS list
+ * Out:
+ * none
+ *
+ * Return Value: none.
+ *
+ -*/
+bool
+WPA_SearchRSN(
+ unsigned char byCmd,
+ unsigned char byEncrypt,
+ PKnownBSS pBSSList
+)
+{
+ int ii;
+ unsigned char byPKType = WPA_NONE;
+
+ if (!pBSSList->bWPAValid)
+ return false;
+
+ switch (byCmd) {
+ case 0:
+
+ if (byEncrypt != pBSSList->byGKType)
+ return false;
+
+ if (pBSSList->wPKCount > 0) {
+ for (ii = 0; ii < pBSSList->wPKCount; ii++) {
+ if (pBSSList->abyPKType[ii] == WPA_AESCCMP)
+ byPKType = WPA_AESCCMP;
+ else if ((pBSSList->abyPKType[ii] == WPA_TKIP) && (byPKType != WPA_AESCCMP))
+ byPKType = WPA_TKIP;
+ else if ((pBSSList->abyPKType[ii] == WPA_WEP40) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP))
+ byPKType = WPA_WEP40;
+ else if ((pBSSList->abyPKType[ii] == WPA_WEP104) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP))
+ byPKType = WPA_WEP104;
+ }
+ if (byEncrypt != byPKType)
+ return false;
+ }
+ return true;
+ break;
+
+ default:
+ break;
+ }
+ return false;
+}
+
+/*+
+ *
+ * Description:
+ * Check if RSN IE makes sense.
+ *
+ * Parameters:
+ * In:
+ * pRSN - Pointer to the RSN IE.
+ * Out:
+ * none
+ *
+ * Return Value: none.
+ *
+ -*/
+bool
+WPAb_Is_RSN(
+ PWLAN_IE_RSN_EXT pRSN
+)
+{
+ if (pRSN == NULL)
+ return false;
+
+ if ((pRSN->len >= 6) && // oui1(4)+ver(2)
+ (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) &&
+ (pRSN->wVersion == 1)) {
+ return true;
+ } else
+ return false;
+}
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