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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 "tmacro.h" |
92b96797 | 36 | #include "tether.h" |
92b96797 | 37 | #include "device.h" |
92b96797 | 38 | #include "80211hdr.h" |
92b96797 | 39 | #include "bssdb.h" |
92b96797 | 40 | #include "wmgr.h" |
92b96797 | 41 | #include "wpa.h" |
92b96797 | 42 | #include "80211mgr.h" |
92b96797 | 43 | |
92b96797 FB |
44 | static int msglevel =MSG_LEVEL_INFO; |
45 | ||
3b138851 VM |
46 | static const u8 abyOUI00[4] = { 0x00, 0x50, 0xf2, 0x00 }; |
47 | static const u8 abyOUI01[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
48 | static const u8 abyOUI02[4] = { 0x00, 0x50, 0xf2, 0x02 }; | |
49 | static const u8 abyOUI03[4] = { 0x00, 0x50, 0xf2, 0x03 }; | |
50 | static const u8 abyOUI04[4] = { 0x00, 0x50, 0xf2, 0x04 }; | |
51 | static const u8 abyOUI05[4] = { 0x00, 0x50, 0xf2, 0x05 }; | |
92b96797 | 52 | |
92b96797 FB |
53 | /*+ |
54 | * | |
55 | * Description: | |
56 | * Clear RSN information in BSSList. | |
57 | * | |
58 | * Parameters: | |
59 | * In: | |
60 | * pBSSList - BSS list. | |
61 | * Out: | |
62 | * none | |
63 | * | |
64 | * Return Value: none. | |
65 | * | |
66 | -*/ | |
67 | ||
8611a29a | 68 | void |
62e7e961 | 69 | WPA_ClearRSN( |
592ccfeb | 70 | PKnownBSS pBSSList |
92b96797 FB |
71 | ) |
72 | { | |
73 | int ii; | |
74 | pBSSList->byGKType = WPA_TKIP; | |
75 | for (ii=0; ii < 4; ii ++) | |
76 | pBSSList->abyPKType[ii] = WPA_TKIP; | |
77 | pBSSList->wPKCount = 0; | |
78 | for (ii=0; ii < 4; ii ++) | |
79 | pBSSList->abyAuthType[ii] = WPA_AUTH_IEEE802_1X; | |
80 | pBSSList->wAuthCount = 0; | |
81 | pBSSList->byDefaultK_as_PK = 0; | |
82 | pBSSList->byReplayIdx = 0; | |
e269fc2d | 83 | pBSSList->sRSNCapObj.bRSNCapExist = false; |
92b96797 | 84 | pBSSList->sRSNCapObj.wRSNCap = 0; |
e269fc2d | 85 | pBSSList->bWPAValid = false; |
92b96797 FB |
86 | } |
87 | ||
92b96797 FB |
88 | /*+ |
89 | * | |
90 | * Description: | |
91 | * Parse RSN IE. | |
92 | * | |
93 | * Parameters: | |
94 | * In: | |
95 | * pBSSList - BSS list. | |
96 | * pRSN - Pointer to the RSN IE. | |
97 | * Out: | |
98 | * none | |
99 | * | |
100 | * Return Value: none. | |
101 | * | |
102 | -*/ | |
8611a29a | 103 | void |
62e7e961 | 104 | WPA_ParseRSN( |
592ccfeb AM |
105 | PKnownBSS pBSSList, |
106 | PWLAN_IE_RSN_EXT pRSN | |
92b96797 FB |
107 | ) |
108 | { | |
109 | PWLAN_IE_RSN_AUTH pIE_RSN_Auth = NULL; | |
110 | int i, j, m, n = 0; | |
b902fbfe | 111 | u8 * pbyCaps; |
92b96797 FB |
112 | |
113 | WPA_ClearRSN(pBSSList); | |
114 | ||
115 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WPA_ParseRSN: [%d]\n", pRSN->len); | |
116 | ||
117 | // information element header makes sense | |
118 | if ((pRSN->len >= 6) // oui1(4)+ver(2) | |
3e362598 | 119 | && (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) |
92b96797 FB |
120 | && (pRSN->wVersion == 1)) { |
121 | ||
122 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Legal RSN\n"); | |
123 | // update each variable if pRSN is long enough to contain the variable | |
124 | if (pRSN->len >= 10) //oui1(4)+ver(2)+GKSuite(4) | |
125 | { | |
3e362598 | 126 | if ( !memcmp(pRSN->abyMulticast, abyOUI01, 4)) |
92b96797 | 127 | pBSSList->byGKType = WPA_WEP40; |
3e362598 | 128 | else if ( !memcmp(pRSN->abyMulticast, abyOUI02, 4)) |
92b96797 | 129 | pBSSList->byGKType = WPA_TKIP; |
3e362598 | 130 | else if ( !memcmp(pRSN->abyMulticast, abyOUI03, 4)) |
92b96797 | 131 | pBSSList->byGKType = WPA_AESWRAP; |
3e362598 | 132 | else if ( !memcmp(pRSN->abyMulticast, abyOUI04, 4)) |
92b96797 | 133 | pBSSList->byGKType = WPA_AESCCMP; |
3e362598 | 134 | else if ( !memcmp(pRSN->abyMulticast, abyOUI05, 4)) |
92b96797 FB |
135 | pBSSList->byGKType = WPA_WEP104; |
136 | else | |
137 | // any vendor checks here | |
138 | pBSSList->byGKType = WPA_NONE; | |
139 | ||
140 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"byGKType: %x\n", pBSSList->byGKType); | |
141 | } | |
142 | ||
143 | if (pRSN->len >= 12) //oui1(4)+ver(2)+GKS(4)+PKSCnt(2) | |
144 | { | |
145 | j = 0; | |
98853698 | 146 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d, sizeof(pBSSList->abyPKType): %zu\n", pRSN->wPKCount, sizeof(pBSSList->abyPKType)); |
33d33e42 | 147 | for (i = 0; (i < pRSN->wPKCount) && |
b330f606 | 148 | (j < ARRAY_SIZE(pBSSList->abyPKType)); i++) { |
92b96797 | 149 | if(pRSN->len >= 12+i*4+4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*i) |
3e362598 | 150 | if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI00, 4)) |
92b96797 | 151 | pBSSList->abyPKType[j++] = WPA_NONE; |
3e362598 | 152 | else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI02, 4)) |
92b96797 | 153 | pBSSList->abyPKType[j++] = WPA_TKIP; |
3e362598 | 154 | else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI03, 4)) |
92b96797 | 155 | pBSSList->abyPKType[j++] = WPA_AESWRAP; |
3e362598 | 156 | else if ( !memcmp(pRSN->PKSList[i].abyOUI, abyOUI04, 4)) |
92b96797 FB |
157 | pBSSList->abyPKType[j++] = WPA_AESCCMP; |
158 | else | |
159 | // any vendor checks here | |
160 | ; | |
161 | } | |
162 | else | |
163 | break; | |
164 | //DBG_PRN_GRP14(("abyPKType[%d]: %X\n", j-1, pBSSList->abyPKType[j-1])); | |
165 | } //for | |
3eaca0d2 | 166 | pBSSList->wPKCount = (u16)j; |
92b96797 FB |
167 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wPKCount: %d\n", pBSSList->wPKCount); |
168 | } | |
169 | ||
170 | m = pRSN->wPKCount; | |
171 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"m: %d\n", m); | |
172 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"14+m*4: %d\n", 14+m*4); | |
173 | ||
174 | if (pRSN->len >= 14+m*4) { //oui1(4)+ver(2)+GKS(4)+PKSCnt(2)+PKS(4*m)+AKC(2) | |
175 | // overlay IE_RSN_Auth structure into correct place | |
176 | pIE_RSN_Auth = (PWLAN_IE_RSN_AUTH) pRSN->PKSList[m].abyOUI; | |
177 | j = 0; | |
98853698 | 178 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d, sizeof(pBSSList->abyAuthType): %zu\n", |
92b96797 | 179 | pIE_RSN_Auth->wAuthCount, sizeof(pBSSList->abyAuthType)); |
33d33e42 | 180 | for (i = 0; (i < pIE_RSN_Auth->wAuthCount) && |
b330f606 | 181 | (j < ARRAY_SIZE(pBSSList->abyAuthType)); i++) { |
92b96797 | 182 | 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 | 183 | if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI01, 4)) |
92b96797 | 184 | pBSSList->abyAuthType[j++] = WPA_AUTH_IEEE802_1X; |
3e362598 | 185 | else if ( !memcmp(pIE_RSN_Auth->AuthKSList[i].abyOUI, abyOUI02, 4)) |
92b96797 FB |
186 | pBSSList->abyAuthType[j++] = WPA_AUTH_PSK; |
187 | else | |
188 | // any vendor checks here | |
189 | ; | |
190 | } | |
191 | else | |
192 | break; | |
193 | //DBG_PRN_GRP14(("abyAuthType[%d]: %X\n", j-1, pBSSList->abyAuthType[j-1])); | |
194 | } | |
195 | if(j > 0) | |
3eaca0d2 | 196 | pBSSList->wAuthCount = (u16)j; |
92b96797 FB |
197 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAuthCount: %d\n", pBSSList->wAuthCount); |
198 | } | |
199 | ||
200 | if (pIE_RSN_Auth != NULL) { | |
201 | ||
202 | n = pIE_RSN_Auth->wAuthCount; | |
203 | ||
204 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"n: %d\n", n); | |
205 | DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"14+4+(m+n)*4: %d\n", 14+4+(m+n)*4); | |
206 | ||
207 | 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) | |
b902fbfe | 208 | pbyCaps = (u8 *)pIE_RSN_Auth->AuthKSList[n].abyOUI; |
92b96797 FB |
209 | pBSSList->byDefaultK_as_PK = (*pbyCaps) & WPA_GROUPFLAG; |
210 | pBSSList->byReplayIdx = 2 << ((*pbyCaps >> WPA_REPLAYBITSSHIFT) & WPA_REPLAYBITS); | |
4e9b5e2b | 211 | pBSSList->sRSNCapObj.bRSNCapExist = true; |
3eaca0d2 | 212 | pBSSList->sRSNCapObj.wRSNCap = *(u16 *)pbyCaps; |
92b96797 FB |
213 | //DBG_PRN_GRP14(("pbyCaps: %X\n", *pbyCaps)); |
214 | //DBG_PRN_GRP14(("byDefaultK_as_PK: %X\n", pBSSList->byDefaultK_as_PK)); | |
215 | //DBG_PRN_GRP14(("byReplayIdx: %X\n", pBSSList->byReplayIdx)); | |
216 | } | |
217 | } | |
4e9b5e2b | 218 | pBSSList->bWPAValid = true; |
92b96797 FB |
219 | } |
220 | } | |
221 | ||
222 | /*+ | |
223 | * | |
224 | * Description: | |
225 | * Search RSN information in BSSList. | |
226 | * | |
227 | * Parameters: | |
228 | * In: | |
229 | * byCmd - Search type | |
a0a1f61a | 230 | * byEncrypt- Encrypt Type |
92b96797 FB |
231 | * pBSSList - BSS list |
232 | * Out: | |
233 | * none | |
234 | * | |
235 | * Return Value: none. | |
236 | * | |
237 | -*/ | |
dfdcc425 | 238 | bool |
62e7e961 | 239 | WPA_SearchRSN( |
b902fbfe AM |
240 | u8 byCmd, |
241 | u8 byEncrypt, | |
592ccfeb | 242 | PKnownBSS pBSSList |
92b96797 FB |
243 | ) |
244 | { | |
245 | int ii; | |
b902fbfe | 246 | u8 byPKType = WPA_NONE; |
92b96797 | 247 | |
e269fc2d AM |
248 | if (pBSSList->bWPAValid == false) |
249 | return false; | |
92b96797 FB |
250 | |
251 | switch(byCmd) { | |
252 | case 0: | |
253 | ||
254 | if (byEncrypt != pBSSList->byGKType) | |
e269fc2d | 255 | return false; |
92b96797 FB |
256 | |
257 | if (pBSSList->wPKCount > 0) { | |
258 | for (ii = 0; ii < pBSSList->wPKCount; ii ++) { | |
259 | if (pBSSList->abyPKType[ii] == WPA_AESCCMP) | |
260 | byPKType = WPA_AESCCMP; | |
261 | else if ((pBSSList->abyPKType[ii] == WPA_TKIP) && (byPKType != WPA_AESCCMP)) | |
262 | byPKType = WPA_TKIP; | |
263 | else if ((pBSSList->abyPKType[ii] == WPA_WEP40) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP)) | |
264 | byPKType = WPA_WEP40; | |
265 | else if ((pBSSList->abyPKType[ii] == WPA_WEP104) && (byPKType != WPA_AESCCMP) && (byPKType != WPA_TKIP)) | |
266 | byPKType = WPA_WEP104; | |
267 | } | |
268 | if (byEncrypt != byPKType) | |
e269fc2d | 269 | return false; |
92b96797 | 270 | } |
4e9b5e2b | 271 | return true; |
92b96797 FB |
272 | // if (pBSSList->wAuthCount > 0) |
273 | // for (ii=0; ii < pBSSList->wAuthCount; ii ++) | |
274 | // if (byAuth == pBSSList->abyAuthType[ii]) | |
275 | // break; | |
276 | break; | |
277 | ||
278 | default: | |
279 | break; | |
280 | } | |
e269fc2d | 281 | return false; |
92b96797 FB |
282 | } |
283 | ||
284 | /*+ | |
285 | * | |
286 | * Description: | |
287 | * Check if RSN IE makes sense. | |
288 | * | |
289 | * Parameters: | |
290 | * In: | |
291 | * pRSN - Pointer to the RSN IE. | |
292 | * Out: | |
293 | * none | |
294 | * | |
295 | * Return Value: none. | |
296 | * | |
297 | -*/ | |
dfdcc425 | 298 | bool |
62e7e961 | 299 | WPAb_Is_RSN( |
592ccfeb | 300 | PWLAN_IE_RSN_EXT pRSN |
92b96797 FB |
301 | ) |
302 | { | |
303 | if (pRSN == NULL) | |
e269fc2d | 304 | return false; |
92b96797 FB |
305 | |
306 | if ((pRSN->len >= 6) && // oui1(4)+ver(2) | |
3e362598 | 307 | (pRSN->byElementID == WLAN_EID_RSN_WPA) && !memcmp(pRSN->abyOUI, abyOUI01, 4) && |
92b96797 | 308 | (pRSN->wVersion == 1)) { |
4e9b5e2b | 309 | return true; |
92b96797 FB |
310 | } |
311 | else | |
e269fc2d | 312 | return false; |
92b96797 FB |
313 | } |
314 |