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92b96797 FB |
1 | /* |
2 | * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. | |
3 | * All rights reserved. | |
4 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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. | |
18 | * | |
19 | * | |
20 | * File: wpa.c | |
21 | * | |
22 | * Purpose: Handles the Basic Service Set & Node Database functions | |
23 | * | |
24 | * Functions: | |
25 | * WPA_ParseRSN - Parse RSN IE. | |
26 | * | |
27 | * Revision History: | |
28 | * | |
29 | * Author: Kyle Hsu | |
30 | * | |
31 | * Date: July 14, 2003 | |
32 | * | |
33 | */ | |
34 | ||
92b96797 | 35 | #include "ttype.h" |
92b96797 | 36 | #include "tmacro.h" |
92b96797 | 37 | #include "tether.h" |
92b96797 | 38 | #include "device.h" |
92b96797 | 39 | #include "80211hdr.h" |
92b96797 | 40 | #include "bssdb.h" |
92b96797 | 41 | #include "wmgr.h" |
92b96797 | 42 | #include "wpa.h" |
92b96797 | 43 | #include "80211mgr.h" |
92b96797 FB |
44 | |
45 | /*--------------------- Static Variables --------------------------*/ | |
46 | static int msglevel =MSG_LEVEL_INFO; | |
47 | ||
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 }; | |
54 | ||
55 | ||
56 | /*+ | |
57 | * | |
58 | * Description: | |
59 | * Clear RSN information in BSSList. | |
60 | * | |
61 | * Parameters: | |
62 | * In: | |
63 | * pBSSList - BSS list. | |
64 | * Out: | |
65 | * none | |
66 | * | |
67 | * Return Value: none. | |
68 | * | |
69 | -*/ | |
70 | ||
8611a29a | 71 | void |
62e7e961 | 72 | WPA_ClearRSN( |
592ccfeb | 73 | PKnownBSS pBSSList |
92b96797 FB |
74 | ) |
75 | { | |
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; | |
89 | } | |
90 | ||
91 | ||
92 | /*+ | |
93 | * | |
94 | * Description: | |
95 | * Parse RSN IE. | |
96 | * | |
97 | * Parameters: | |
98 | * In: | |
99 | * pBSSList - BSS list. | |
100 | * pRSN - Pointer to the RSN IE. | |
101 | * Out: | |
102 | * none | |
103 | * | |
104 | * Return Value: none. | |
105 | * | |
106 | -*/ | |
8611a29a | 107 | void |
62e7e961 | 108 | WPA_ParseRSN( |
592ccfeb AM |
109 | PKnownBSS pBSSList, |
110 | PWLAN_IE_RSN_EXT pRSN | |
92b96797 FB |
111 | ) |
112 | { | |
113 | PWLAN_IE_RSN_AUTH pIE_RSN_Auth = NULL; | |
114 | int i, j, m, n = 0; | |
115 | PBYTE pbyCaps; | |
116 | ||
117 | WPA_ClearRSN(pBSSList); | |
118 | ||
119 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WPA_ParseRSN: [%d]\n", pRSN->len); | |
120 | ||
121 | // information element header makes sense | |
122 | if ((pRSN->len >= 6) // oui1(4)+ver(2) | |
3e362598 | 123 | && (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) |
92b96797 FB |
124 | && (pRSN->wVersion == 1)) { |
125 | ||
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) | |
129 | { | |
3e362598 | 130 | if ( !memcmp(pRSN->abyMulticast, abyOUI01, 4)) |
92b96797 | 131 | pBSSList->byGKType = WPA_WEP40; |
3e362598 | 132 | else if ( !memcmp(pRSN->abyMulticast, abyOUI02, 4)) |
92b96797 | 133 | pBSSList->byGKType = WPA_TKIP; |
3e362598 | 134 | else if ( !memcmp(pRSN->abyMulticast, abyOUI03, 4)) |
92b96797 | 135 | pBSSList->byGKType = WPA_AESWRAP; |
3e362598 | 136 | else if ( !memcmp(pRSN->abyMulticast, abyOUI04, 4)) |
92b96797 | 137 | pBSSList->byGKType = WPA_AESCCMP; |
3e362598 | 138 | else if ( !memcmp(pRSN->abyMulticast, abyOUI05, 4)) |
92b96797 FB |
139 | pBSSList->byGKType = WPA_WEP104; |
140 | else | |
141 | // any vendor checks here | |
142 | pBSSList->byGKType = WPA_NONE; | |
143 | ||
144 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"byGKType: %x\n", pBSSList->byGKType); | |
145 | } | |
146 | ||
147 | if (pRSN->len >= 12) //oui1(4)+ver(2)+GKS(4)+PKSCnt(2) | |
148 | { | |
149 | j = 0; | |
98853698 | 150 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d, sizeof(pBSSList->abyPKType): %zu\n", pRSN->wPKCount, sizeof(pBSSList->abyPKType)); |
33d33e42 | 151 | for (i = 0; (i < pRSN->wPKCount) && |
b330f606 | 152 | (j < ARRAY_SIZE(pBSSList->abyPKType)); i++) { |
92b96797 | 153 | if(pRSN->len >= 12+i*4+4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*i) |
3e362598 | 154 | if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI00, 4)) |
92b96797 | 155 | pBSSList->abyPKType[j++] = WPA_NONE; |
3e362598 | 156 | else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI02, 4)) |
92b96797 | 157 | pBSSList->abyPKType[j++] = WPA_TKIP; |
3e362598 | 158 | else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI03, 4)) |
92b96797 | 159 | pBSSList->abyPKType[j++] = WPA_AESWRAP; |
3e362598 | 160 | else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI04, 4)) |
92b96797 FB |
161 | pBSSList->abyPKType[j++] = WPA_AESCCMP; |
162 | else | |
163 | // any vendor checks here | |
164 | ; | |
165 | } | |
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); | |
172 | } | |
173 | ||
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); | |
177 | ||
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; | |
98853698 | 182 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d, sizeof(pBSSList->abyAuthType): %zu\n", |
92b96797 | 183 | pIE_RSN_Auth->wAuthCount, sizeof(pBSSList->abyAuthType)); |
33d33e42 | 184 | for (i = 0; (i < pIE_RSN_Auth->wAuthCount) && |
b330f606 | 185 | (j < ARRAY_SIZE(pBSSList->abyAuthType)); i++) { |
92b96797 | 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) |
3e362598 | 187 | if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI01, 4)) |
92b96797 | 188 | pBSSList->abyAuthType[j++] = WPA_AUTH_IEEE802_1X; |
3e362598 | 189 | else if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI02, 4)) |
92b96797 FB |
190 | pBSSList->abyAuthType[j++] = WPA_AUTH_PSK; |
191 | else | |
192 | // any vendor checks here | |
193 | ; | |
194 | } | |
195 | else | |
196 | break; | |
197 | //DBG_PRN_GRP14(("abyAuthType[%d]: %X\n", j-1, pBSSList->abyAuthType[j-1])); | |
198 | } | |
199 | if(j > 0) | |
200 | pBSSList->wAuthCount = (WORD)j; | |
201 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d\n", pBSSList->wAuthCount); | |
202 | } | |
203 | ||
204 | if (pIE_RSN_Auth != NULL) { | |
205 | ||
206 | n = pIE_RSN_Auth->wAuthCount; | |
207 | ||
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); | |
210 | ||
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)); | |
220 | } | |
221 | } | |
222 | pBSSList->bWPAValid = TRUE; | |
223 | } | |
224 | } | |
225 | ||
226 | /*+ | |
227 | * | |
228 | * Description: | |
229 | * Search RSN information in BSSList. | |
230 | * | |
231 | * Parameters: | |
232 | * In: | |
233 | * byCmd - Search type | |
a0a1f61a | 234 | * byEncrypt- Encrypt Type |
92b96797 FB |
235 | * pBSSList - BSS list |
236 | * Out: | |
237 | * none | |
238 | * | |
239 | * Return Value: none. | |
240 | * | |
241 | -*/ | |
242 | BOOL | |
62e7e961 | 243 | WPA_SearchRSN( |
92b96797 FB |
244 | BYTE byCmd, |
245 | BYTE byEncrypt, | |
592ccfeb | 246 | PKnownBSS pBSSList |
92b96797 FB |
247 | ) |
248 | { | |
249 | int ii; | |
250 | BYTE byPKType = WPA_NONE; | |
251 | ||
252 | if (pBSSList->bWPAValid == FALSE) | |
253 | return FALSE; | |
254 | ||
255 | switch(byCmd) { | |
256 | case 0: | |
257 | ||
258 | if (byEncrypt != pBSSList->byGKType) | |
259 | return FALSE; | |
260 | ||
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; | |
271 | } | |
272 | if (byEncrypt != byPKType) | |
273 | return FALSE; | |
274 | } | |
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; | |
281 | ||
282 | default: | |
283 | break; | |
284 | } | |
285 | return FALSE; | |
286 | } | |
287 | ||
288 | /*+ | |
289 | * | |
290 | * Description: | |
291 | * Check if RSN IE makes sense. | |
292 | * | |
293 | * Parameters: | |
294 | * In: | |
295 | * pRSN - Pointer to the RSN IE. | |
296 | * Out: | |
297 | * none | |
298 | * | |
299 | * Return Value: none. | |
300 | * | |
301 | -*/ | |
302 | BOOL | |
62e7e961 | 303 | WPAb_Is_RSN( |
592ccfeb | 304 | PWLAN_IE_RSN_EXT pRSN |
92b96797 FB |
305 | ) |
306 | { | |
307 | if (pRSN == NULL) | |
308 | return FALSE; | |
309 | ||
310 | if ((pRSN->len >= 6) && // oui1(4)+ver(2) | |
3e362598 | 311 | (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) && |
92b96797 FB |
312 | (pRSN->wVersion == 1)) { |
313 | return TRUE; | |
314 | } | |
315 | else | |
316 | return FALSE; | |
317 | } | |
318 |