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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 | /* * 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: wpa2.c * * Purpose: Handles the Basic Service Set & Node Database functions * * Functions: * * Revision History: * * Author: Yiching Chen * * Date: Oct. 4, 2004 * */ #include "wpa2.h" #include "device.h" /*--------------------- Static Definitions -------------------------*/ static int msglevel =MSG_LEVEL_INFO; //static int msglevel =MSG_LEVEL_DEBUG; /*--------------------- Static Classes ----------------------------*/ /*--------------------- Static Variables --------------------------*/ const BYTE abyOUIGK[4] = { 0x00, 0x0F, 0xAC, 0x00 }; const BYTE abyOUIWEP40[4] = { 0x00, 0x0F, 0xAC, 0x01 }; const BYTE abyOUIWEP104[4] = { 0x00, 0x0F, 0xAC, 0x05 }; const BYTE abyOUITKIP[4] = { 0x00, 0x0F, 0xAC, 0x02 }; const BYTE abyOUICCMP[4] = { 0x00, 0x0F, 0xAC, 0x04 }; const BYTE abyOUI8021X[4] = { 0x00, 0x0F, 0xAC, 0x01 }; const BYTE abyOUIPSK[4] = { 0x00, 0x0F, 0xAC, 0x02 }; /*--------------------- Static Functions --------------------------*/ /*--------------------- Export Variables --------------------------*/ /*--------------------- Export Functions --------------------------*/ /*+ * * Description: * Clear RSN information in BSSList. * * Parameters: * In: * pBSSNode - BSS list. * Out: * none * * Return Value: none. * -*/ void WPA2_ClearRSN ( PKnownBSS pBSSNode ) { int ii; pBSSNode->bWPA2Valid = FALSE; pBSSNode->byCSSGK = WLAN_11i_CSS_CCMP; for (ii=0; ii < 4; ii ++) pBSSNode->abyCSSPK[ii] = WLAN_11i_CSS_CCMP; pBSSNode->wCSSPKCount = 1; for (ii=0; ii < 4; ii ++) pBSSNode->abyAKMSSAuthType[ii] = WLAN_11i_AKMSS_802_1X; pBSSNode->wAKMSSAuthCount = 1; pBSSNode->sRSNCapObj.bRSNCapExist = FALSE; pBSSNode->sRSNCapObj.wRSNCap = 0; } /*+ * * Description: * Parse RSN IE. * * Parameters: * In: * pBSSNode - BSS list. * pRSN - Pointer to the RSN IE. * Out: * none * * Return Value: none. * -*/ void WPA2vParseRSN ( PKnownBSS pBSSNode, PWLAN_IE_RSN pRSN ) { int i, j; WORD m = 0, n = 0; PBYTE pbyOUI; BOOL bUseGK = FALSE; DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WPA2_ParseRSN: [%d]\n", pRSN->len); WPA2_ClearRSN(pBSSNode); if (pRSN->len == 2) { // ver(2) if ((pRSN->byElementID == WLAN_EID_RSN) && (pRSN->wVersion == 1)) { pBSSNode->bWPA2Valid = TRUE; } return; } if (pRSN->len < 6) { // ver(2) + GK(4) // invalid CSS, P802.11i/D10.0, p31 return; } // information element header makes sense if ((pRSN->byElementID == WLAN_EID_RSN) && (pRSN->wVersion == 1)) { DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Legal 802.11i RSN\n"); pbyOUI = &(pRSN->abyRSN[0]); if ( !memcmp(pbyOUI, abyOUIWEP40, 4)) pBSSNode->byCSSGK = WLAN_11i_CSS_WEP40; else if ( !memcmp(pbyOUI, abyOUITKIP, 4)) pBSSNode->byCSSGK = WLAN_11i_CSS_TKIP; else if ( !memcmp(pbyOUI, abyOUICCMP, 4)) pBSSNode->byCSSGK = WLAN_11i_CSS_CCMP; else if ( !memcmp(pbyOUI, abyOUIWEP104, 4)) pBSSNode->byCSSGK = WLAN_11i_CSS_WEP104; else if ( !memcmp(pbyOUI, abyOUIGK, 4)) { // invalid CSS, P802.11i/D10.0, p32 return; } else // any vendor checks here pBSSNode->byCSSGK = WLAN_11i_CSS_UNKNOWN; DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"802.11i CSS: %X\n", pBSSNode->byCSSGK); if (pRSN->len == 6) { pBSSNode->bWPA2Valid = TRUE; return; } if (pRSN->len >= 8) { // ver(2) + GK(4) + PK count(2) pBSSNode->wCSSPKCount = *((PWORD) &(pRSN->abyRSN[4])); j = 0; pbyOUI = &(pRSN->abyRSN[6]); for (i = 0; (i < pBSSNode->wCSSPKCount) && (j < sizeof(pBSSNode->abyCSSPK)/sizeof(BYTE)); i++) { if (pRSN->len >= 8+i*4+4) { // ver(2)+GK(4)+PKCnt(2)+PKS(4*i) if ( !memcmp(pbyOUI, abyOUIGK, 4)) { pBSSNode->abyCSSPK[j++] = WLAN_11i_CSS_USE_GROUP; bUseGK = TRUE; } else if ( !memcmp(pbyOUI, abyOUIWEP40, 4)) { // Invialid CSS, continue to parsing } else if ( !memcmp(pbyOUI, abyOUITKIP, 4)) { if (pBSSNode->byCSSGK != WLAN_11i_CSS_CCMP) pBSSNode->abyCSSPK[j++] = WLAN_11i_CSS_TKIP; else ; // Invialid CSS, continue to parsing } else if ( !memcmp(pbyOUI, abyOUICCMP, 4)) { pBSSNode->abyCSSPK[j++] = WLAN_11i_CSS_CCMP; } else if ( !memcmp(pbyOUI, abyOUIWEP104, 4)) { // Invialid CSS, continue to parsing } else { // any vendor checks here pBSSNode->abyCSSPK[j++] = WLAN_11i_CSS_UNKNOWN; } pbyOUI += 4; DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"abyCSSPK[%d]: %X\n", j-1, pBSSNode->abyCSSPK[j-1]); } else break; } //for if (bUseGK == TRUE) { if (j != 1) { // invalid CSS, This should be only PK CSS. return; } if (pBSSNode->byCSSGK == WLAN_11i_CSS_CCMP) { // invalid CSS, If CCMP is enable , PK can't be CSSGK. return; } } if ((pBSSNode->wCSSPKCount != 0) && (j == 0)) { // invalid CSS, No valid PK. return; } pBSSNode->wCSSPKCount = (WORD)j; DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wCSSPKCount: %d\n", pBSSNode->wCSSPKCount); } m = *((PWORD) &(pRSN->abyRSN[4])); if (pRSN->len >= 10+m*4) { // ver(2) + GK(4) + PK count(2) + PKS(4*m) + AKMSS count(2) pBSSNode->wAKMSSAuthCount = *((PWORD) &(pRSN->abyRSN[6+4*m])); j = 0; pbyOUI = &(pRSN->abyRSN[8+4*m]); for (i = 0; (i < pBSSNode->wAKMSSAuthCount) && (j < sizeof(pBSSNode->abyAKMSSAuthType)/sizeof(BYTE)); i++) { if (pRSN->len >= 10+(m+i)*4+4) { // ver(2)+GK(4)+PKCnt(2)+PKS(4*m)+AKMSS(2)+AKS(4*i) if ( !memcmp(pbyOUI, abyOUI8021X, 4)) pBSSNode->abyAKMSSAuthType[j++] = WLAN_11i_AKMSS_802_1X; else if ( !memcmp(pbyOUI, abyOUIPSK, 4)) pBSSNode->abyAKMSSAuthType[j++] = WLAN_11i_AKMSS_PSK; else // any vendor checks here pBSSNode->abyAKMSSAuthType[j++] = WLAN_11i_AKMSS_UNKNOWN; DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"abyAKMSSAuthType[%d]: %X\n", j-1, pBSSNode->abyAKMSSAuthType[j-1]); } else break; } pBSSNode->wAKMSSAuthCount = (WORD)j; DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wAKMSSAuthCount: %d\n", pBSSNode->wAKMSSAuthCount); n = *((PWORD) &(pRSN->abyRSN[6+4*m])); if (pRSN->len >= 12+4*m+4*n) { // ver(2)+GK(4)+PKCnt(2)+PKS(4*m)+AKMSSCnt(2)+AKMSS(4*n)+Cap(2) pBSSNode->sRSNCapObj.bRSNCapExist = TRUE; pBSSNode->sRSNCapObj.wRSNCap = *((PWORD) &(pRSN->abyRSN[8+4*m+4*n])); } } //ignore PMKID lists bcs only (Re)Assocrequest has this field pBSSNode->bWPA2Valid = TRUE; } } /*+ * * Description: * Set WPA IEs * * Parameters: * In: * pMgmtHandle - Pointer to management object * Out: * pRSNIEs - Pointer to the RSN IE to set. * * Return Value: length of IEs. * -*/ unsigned int WPA2uSetIEs(void *pMgmtHandle, PWLAN_IE_RSN pRSNIEs ) { PSMgmtObject pMgmt = (PSMgmtObject) pMgmtHandle; PBYTE pbyBuffer = NULL; unsigned int ii = 0; PWORD pwPMKID = NULL; if (pRSNIEs == NULL) { return(0); } if (((pMgmt->eAuthenMode == WMAC_AUTH_WPA2) || (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) && (pMgmt->pCurrBSS != NULL)) { /* WPA2 IE */ pbyBuffer = (PBYTE) pRSNIEs; pRSNIEs->byElementID = WLAN_EID_RSN; pRSNIEs->len = 6; //Version(2)+GK(4) pRSNIEs->wVersion = 1; //Group Key Cipher Suite pRSNIEs->abyRSN[0] = 0x00; pRSNIEs->abyRSN[1] = 0x0F; pRSNIEs->abyRSN[2] = 0xAC; if (pMgmt->byCSSGK == KEY_CTL_WEP) { pRSNIEs->abyRSN[3] = pMgmt->pCurrBSS->byCSSGK; } else if (pMgmt->byCSSGK == KEY_CTL_TKIP) { pRSNIEs->abyRSN[3] = WLAN_11i_CSS_TKIP; } else if (pMgmt->byCSSGK == KEY_CTL_CCMP) { pRSNIEs->abyRSN[3] = WLAN_11i_CSS_CCMP; } else { pRSNIEs->abyRSN[3] = WLAN_11i_CSS_UNKNOWN; } // Pairwise Key Cipher Suite pRSNIEs->abyRSN[4] = 1; pRSNIEs->abyRSN[5] = 0; pRSNIEs->abyRSN[6] = 0x00; pRSNIEs->abyRSN[7] = 0x0F; pRSNIEs->abyRSN[8] = 0xAC; if (pMgmt->byCSSPK == KEY_CTL_TKIP) { pRSNIEs->abyRSN[9] = WLAN_11i_CSS_TKIP; } else if (pMgmt->byCSSPK == KEY_CTL_CCMP) { pRSNIEs->abyRSN[9] = WLAN_11i_CSS_CCMP; } else if (pMgmt->byCSSPK == KEY_CTL_NONE) { pRSNIEs->abyRSN[9] = WLAN_11i_CSS_USE_GROUP; } else { pRSNIEs->abyRSN[9] = WLAN_11i_CSS_UNKNOWN; } pRSNIEs->len += 6; // Auth Key Management Suite pRSNIEs->abyRSN[10] = 1; pRSNIEs->abyRSN[11] = 0; pRSNIEs->abyRSN[12] = 0x00; pRSNIEs->abyRSN[13] = 0x0F; pRSNIEs->abyRSN[14] = 0xAC; if (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK) { pRSNIEs->abyRSN[15] = WLAN_11i_AKMSS_PSK; } else if (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) { pRSNIEs->abyRSN[15] = WLAN_11i_AKMSS_802_1X; } else { pRSNIEs->abyRSN[15] = WLAN_11i_AKMSS_UNKNOWN; } pRSNIEs->len +=6; // RSN Capabilites if (pMgmt->pCurrBSS->sRSNCapObj.bRSNCapExist == TRUE) { memcpy(&pRSNIEs->abyRSN[16], &pMgmt->pCurrBSS->sRSNCapObj.wRSNCap, 2); } else { pRSNIEs->abyRSN[16] = 0; pRSNIEs->abyRSN[17] = 0; } pRSNIEs->len +=2; if ((pMgmt->gsPMKIDCache.BSSIDInfoCount > 0) && (pMgmt->bRoaming == TRUE) && (pMgmt->eAuthenMode == WMAC_AUTH_WPA2)) { /* RSN PMKID, pointer to PMKID count */ pwPMKID = (PWORD)(&pRSNIEs->abyRSN[18]); *pwPMKID = 0; /* Initialize PMKID count */ pbyBuffer = &pRSNIEs->abyRSN[20]; /* Point to PMKID list */ for (ii = 0; ii < pMgmt->gsPMKIDCache.BSSIDInfoCount; ii++) { if (!memcmp(&pMgmt-> gsPMKIDCache.BSSIDInfo[ii].abyBSSID[0], pMgmt->abyCurrBSSID, ETH_ALEN)) { (*pwPMKID)++; memcpy(pbyBuffer, pMgmt->gsPMKIDCache.BSSIDInfo[ii].abyPMKID, 16); pbyBuffer += 16; } } if (*pwPMKID != 0) { pRSNIEs->len += (2 + (*pwPMKID)*16); } else { pbyBuffer = &pRSNIEs->abyRSN[18]; } } return(pRSNIEs->len + WLAN_IEHDR_LEN); } return(0); } |