tty/serial: atmel_serial: whitespace and braces modifications
[zen-stable.git] / drivers / staging / vt6656 / wpa.c
blob7dde3d6941ab1bd7d85949cdade860b4d2439bbf
1 /*
2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
3 * All rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 * File: wpa.c
22 * Purpose: Handles the Basic Service Set & Node Database functions
24 * Functions:
25 * WPA_ParseRSN - Parse RSN IE.
27 * Revision History:
29 * Author: Kyle Hsu
31 * Date: July 14, 2003
35 #include "ttype.h"
36 #include "tmacro.h"
37 #include "tether.h"
38 #include "device.h"
39 #include "80211hdr.h"
40 #include "bssdb.h"
41 #include "wmgr.h"
42 #include "wpa.h"
43 #include "80211mgr.h"
45 /*--------------------- Static Variables --------------------------*/
46 static int msglevel =MSG_LEVEL_INFO;
48 const BYTE abyOUI00[4] = { 0x00, 0x50, 0xf2, 0x00 };
49 const BYTE abyOUI01[4] = { 0x00, 0x50, 0xf2, 0x01 };
50 const BYTE abyOUI02[4] = { 0x00, 0x50, 0xf2, 0x02 };
51 const BYTE abyOUI03[4] = { 0x00, 0x50, 0xf2, 0x03 };
52 const BYTE abyOUI04[4] = { 0x00, 0x50, 0xf2, 0x04 };
53 const BYTE abyOUI05[4] = { 0x00, 0x50, 0xf2, 0x05 };
56 /*+
58 * Description:
59 * Clear RSN information in BSSList.
61 * Parameters:
62 * In:
63 * pBSSList - BSS list.
64 * Out:
65 * none
67 * Return Value: none.
69 -*/
71 void
72 WPA_ClearRSN(
73 PKnownBSS pBSSList
76 int ii;
77 pBSSList->byGKType = WPA_TKIP;
78 for (ii=0; ii < 4; ii ++)
79 pBSSList->abyPKType[ii] = WPA_TKIP;
80 pBSSList->wPKCount = 0;
81 for (ii=0; ii < 4; ii ++)
82 pBSSList->abyAuthType[ii] = WPA_AUTH_IEEE802_1X;
83 pBSSList->wAuthCount = 0;
84 pBSSList->byDefaultK_as_PK = 0;
85 pBSSList->byReplayIdx = 0;
86 pBSSList->sRSNCapObj.bRSNCapExist = FALSE;
87 pBSSList->sRSNCapObj.wRSNCap = 0;
88 pBSSList->bWPAValid = FALSE;
92 /*+
94 * Description:
95 * Parse RSN IE.
97 * Parameters:
98 * In:
99 * pBSSList - BSS list.
100 * pRSN - Pointer to the RSN IE.
101 * Out:
102 * none
104 * Return Value: none.
107 void
108 WPA_ParseRSN(
109 PKnownBSS pBSSList,
110 PWLAN_IE_RSN_EXT pRSN
113 PWLAN_IE_RSN_AUTH pIE_RSN_Auth = NULL;
114 int i, j, m, n = 0;
115 PBYTE pbyCaps;
117 WPA_ClearRSN(pBSSList);
119 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WPA_ParseRSN: [%d]\n", pRSN->len);
121 // information element header makes sense
122 if ((pRSN->len >= 6) // oui1(4)+ver(2)
123 && (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4)
124 && (pRSN->wVersion == 1)) {
126 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Legal RSN\n");
127 // update each variable if pRSN is long enough to contain the variable
128 if (pRSN->len >= 10) //oui1(4)+ver(2)+GKSuite(4)
130 if ( !memcmp(pRSN->abyMulticast, abyOUI01, 4))
131 pBSSList->byGKType = WPA_WEP40;
132 else if ( !memcmp(pRSN->abyMulticast, abyOUI02, 4))
133 pBSSList->byGKType = WPA_TKIP;
134 else if ( !memcmp(pRSN->abyMulticast, abyOUI03, 4))
135 pBSSList->byGKType = WPA_AESWRAP;
136 else if ( !memcmp(pRSN->abyMulticast, abyOUI04, 4))
137 pBSSList->byGKType = WPA_AESCCMP;
138 else if ( !memcmp(pRSN->abyMulticast, abyOUI05, 4))
139 pBSSList->byGKType = WPA_WEP104;
140 else
141 // any vendor checks here
142 pBSSList->byGKType = WPA_NONE;
144 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"byGKType: %x\n", pBSSList->byGKType);
147 if (pRSN->len >= 12) //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)
149 j = 0;
150 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d, sizeof(pBSSList->abyPKType): %zu\n", pRSN->wPKCount, sizeof(pBSSList->abyPKType));
151 for (i = 0; (i < pRSN->wPKCount) &&
152 (j < sizeof(pBSSList->abyPKType)/sizeof(BYTE)); i++) {
153 if(pRSN->len >= 12+i*4+4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*i)
154 if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI00, 4))
155 pBSSList->abyPKType[j++] = WPA_NONE;
156 else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI02, 4))
157 pBSSList->abyPKType[j++] = WPA_TKIP;
158 else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI03, 4))
159 pBSSList->abyPKType[j++] = WPA_AESWRAP;
160 else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI04, 4))
161 pBSSList->abyPKType[j++] = WPA_AESCCMP;
162 else
163 // any vendor checks here
166 else
167 break;
168 //DBG_PRN_GRP14(("abyPKType[%d]: %X\n", j-1, pBSSList->abyPKType[j-1]));
169 } //for
170 pBSSList->wPKCount = (WORD)j;
171 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d\n", pBSSList->wPKCount);
174 m = pRSN->wPKCount;
175 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"m: %d\n", m);
176 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"14+m*4: %d\n", 14+m*4);
178 if (pRSN->len >= 14+m*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)
179 // overlay IE_RSN_Auth structure into correct place
180 pIE_RSN_Auth = (PWLAN_IE_RSN_AUTH) pRSN->PKSList[m].abyOUI;
181 j = 0;
182 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d, sizeof(pBSSList->abyAuthType): %zu\n",
183 pIE_RSN_Auth->wAuthCount, sizeof(pBSSList->abyAuthType));
184 for (i = 0; (i < pIE_RSN_Auth->wAuthCount) &&
185 (j < sizeof(pBSSList->abyAuthType)/sizeof(BYTE)); i++) {
186 if(pRSN->len >= 14+4+(m+i)*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2)+AKS(4*i)
187 if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI01, 4))
188 pBSSList->abyAuthType[j++] = WPA_AUTH_IEEE802_1X;
189 else if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI02, 4))
190 pBSSList->abyAuthType[j++] = WPA_AUTH_PSK;
191 else
192 // any vendor checks here
195 else
196 break;
197 //DBG_PRN_GRP14(("abyAuthType[%d]: %X\n", j-1, pBSSList->abyAuthType[j-1]));
199 if(j > 0)
200 pBSSList->wAuthCount = (WORD)j;
201 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d\n", pBSSList->wAuthCount);
204 if (pIE_RSN_Auth != NULL) {
206 n = pIE_RSN_Auth->wAuthCount;
208 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"n: %d\n", n);
209 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"14+4+(m+n)*4: %d\n", 14+4+(m+n)*4);
211 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)
212 pbyCaps = (PBYTE)pIE_RSN_Auth->AuthKSList[n].abyOUI;
213 pBSSList->byDefaultK_as_PK = (*pbyCaps) & WPA_GROUPFLAG;
214 pBSSList->byReplayIdx = 2 << ((*pbyCaps >> WPA_REPLAYBITSSHIFT) & WPA_REPLAYBITS);
215 pBSSList->sRSNCapObj.bRSNCapExist = TRUE;
216 pBSSList->sRSNCapObj.wRSNCap = *(PWORD)pbyCaps;
217 //DBG_PRN_GRP14(("pbyCaps: %X\n", *pbyCaps));
218 //DBG_PRN_GRP14(("byDefaultK_as_PK: %X\n", pBSSList->byDefaultK_as_PK));
219 //DBG_PRN_GRP14(("byReplayIdx: %X\n", pBSSList->byReplayIdx));
222 pBSSList->bWPAValid = TRUE;
228 * Description:
229 * Search RSN information in BSSList.
231 * Parameters:
232 * In:
233 * byCmd - Search type
234 * byEncrypt- Encrcypt Type
235 * pBSSList - BSS list
236 * Out:
237 * none
239 * Return Value: none.
242 BOOL
243 WPA_SearchRSN(
244 BYTE byCmd,
245 BYTE byEncrypt,
246 PKnownBSS pBSSList
249 int ii;
250 BYTE byPKType = WPA_NONE;
252 if (pBSSList->bWPAValid == FALSE)
253 return FALSE;
255 switch(byCmd) {
256 case 0:
258 if (byEncrypt != pBSSList->byGKType)
259 return FALSE;
261 if (pBSSList->wPKCount > 0) {
262 for (ii = 0; ii < pBSSList->wPKCount; ii ++) {
263 if (pBSSList->abyPKType[ii] == WPA_AESCCMP)
264 byPKType = WPA_AESCCMP;
265 else if ((pBSSList->abyPKType[ii] == WPA_TKIP) && (byPKType != WPA_AESCCMP))
266 byPKType = WPA_TKIP;
267 else if ((pBSSList->abyPKType[ii] == WPA_WEP40) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP))
268 byPKType = WPA_WEP40;
269 else if ((pBSSList->abyPKType[ii] == WPA_WEP104) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP))
270 byPKType = WPA_WEP104;
272 if (byEncrypt != byPKType)
273 return FALSE;
275 return TRUE;
276 // if (pBSSList->wAuthCount > 0)
277 // for (ii=0; ii < pBSSList->wAuthCount; ii ++)
278 // if (byAuth == pBSSList->abyAuthType[ii])
279 // break;
280 break;
282 default:
283 break;
285 return FALSE;
290 * Description:
291 * Check if RSN IE makes sense.
293 * Parameters:
294 * In:
295 * pRSN - Pointer to the RSN IE.
296 * Out:
297 * none
299 * Return Value: none.
302 BOOL
303 WPAb_Is_RSN(
304 PWLAN_IE_RSN_EXT pRSN
307 if (pRSN == NULL)
308 return FALSE;
310 if ((pRSN->len >= 6) && // oui1(4)+ver(2)
311 (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) &&
312 (pRSN->wVersion == 1)) {
313 return TRUE;
315 else
316 return FALSE;