| /* |
| * Copyright (c) 2011-2015, 2018 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /* |
| * |
| * This file limSmeReqUtils.cc contains the utility functions |
| * for processing SME request messages. |
| * Author: Chandra Modumudi |
| * Date: 02/11/02 |
| * History:- |
| * Date Modified by Modification Information |
| * -------------------------------------------------------------------- |
| * 05/26/10 js WPA handling in (Re)Assoc frames |
| * |
| */ |
| |
| #include "wniApi.h" |
| #include "wniCfg.h" |
| #include "cfgApi.h" |
| #include "sirApi.h" |
| #include "schApi.h" |
| #include "utilsApi.h" |
| #include "limTypes.h" |
| #include "limUtils.h" |
| #include "limAssocUtils.h" |
| #include "limSecurityUtils.h" |
| #include "limSerDesUtils.h" |
| |
| |
| |
| /** |
| * limIsRSNieValidInSmeReqMessage() |
| * |
| *FUNCTION: |
| * This function is called to verify if the RSN IE |
| * received in various SME_REQ messages is valid or not |
| * |
| *LOGIC: |
| * RSN IE validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pRSNie Pointer to received RSN IE |
| * @return true when RSN IE is valid, false otherwise |
| */ |
| |
| static tANI_U8 |
| limIsRSNieValidInSmeReqMessage(tpAniSirGlobal pMac, tpSirRSNie pRSNie) |
| { |
| tANI_U8 startPos = 0; |
| tANI_U32 privacy, val; |
| int len; |
| |
| if (wlan_cfgGetInt(pMac, WNI_CFG_PRIVACY_ENABLED, |
| &privacy) != eSIR_SUCCESS) |
| { |
| limLog(pMac, LOGP, |
| FL("Unable to retrieve POI from CFG")); |
| } |
| |
| if (wlan_cfgGetInt(pMac, WNI_CFG_RSN_ENABLED, |
| &val) != eSIR_SUCCESS) |
| { |
| limLog(pMac, LOGP, |
| FL("Unable to retrieve RSN_ENABLED from CFG")); |
| } |
| |
| if (pRSNie->length && (!privacy || !val)) |
| { |
| // Privacy & RSN not enabled in CFG. |
| /** |
| * In order to allow mixed mode for Guest access |
| * allow BSS creation/join with no Privacy capability |
| * yet advertising WPA IE |
| */ |
| PELOG1(limLog(pMac, LOG1, FL("RSN ie len %d but PRIVACY %d RSN %d"), |
| pRSNie->length, privacy, val);) |
| } |
| |
| if (pRSNie->length) |
| { |
| if ((pRSNie->rsnIEdata[0] != DOT11F_EID_RSN) && |
| (pRSNie->rsnIEdata[0] != DOT11F_EID_WPA) |
| #ifdef FEATURE_WLAN_WAPI |
| && (pRSNie->rsnIEdata[0] != DOT11F_EID_WAPI) |
| #endif |
| ) |
| { |
| limLog(pMac, LOGE, FL("RSN/WPA/WAPI EID %d not [%d || %d]"), |
| pRSNie->rsnIEdata[0], DOT11F_EID_RSN, |
| DOT11F_EID_WPA); |
| return false; |
| } |
| |
| len = pRSNie->length; |
| startPos = 0; |
| while(len > 0) |
| { |
| // Check validity of RSN IE |
| if (pRSNie->rsnIEdata[startPos] == DOT11F_EID_RSN) |
| { |
| if((pRSNie->rsnIEdata[startPos+1] > DOT11F_IE_RSN_MAX_LEN) || |
| (pRSNie->rsnIEdata[startPos+1] < DOT11F_IE_RSN_MIN_LEN)) |
| { |
| limLog(pMac, LOGE, FL("RSN IE len %d not [%d,%d]"), |
| pRSNie->rsnIEdata[startPos+1], DOT11F_IE_RSN_MIN_LEN, |
| DOT11F_IE_RSN_MAX_LEN); |
| return false; |
| } |
| } |
| else if(pRSNie->rsnIEdata[startPos] == DOT11F_EID_WPA) |
| { |
| // Check validity of WPA IE |
| if (SIR_MAC_MAX_IE_LENGTH > startPos) |
| { |
| if (startPos <= (SIR_MAC_MAX_IE_LENGTH - sizeof(tANI_U32))) |
| val = sirReadU32((tANI_U8 *) &pRSNie->rsnIEdata[startPos + 2]); |
| if((pRSNie->rsnIEdata[startPos + 1] < DOT11F_IE_WPA_MIN_LEN) || |
| (pRSNie->rsnIEdata[startPos + 1] > DOT11F_IE_WPA_MAX_LEN) || |
| (SIR_MAC_WPA_OUI != val)) |
| { |
| limLog(pMac, LOGE, |
| FL("WPA IE len %d not [%d,%d] OR data 0x%x not 0x%x"), |
| pRSNie->rsnIEdata[startPos+1], DOT11F_IE_WPA_MIN_LEN, |
| DOT11F_IE_WPA_MAX_LEN, val, SIR_MAC_WPA_OUI); |
| |
| return false; |
| } |
| } |
| } |
| #ifdef FEATURE_WLAN_WAPI |
| else if(pRSNie->rsnIEdata[startPos] == DOT11F_EID_WAPI) |
| { |
| if((pRSNie->rsnIEdata[startPos+1] > DOT11F_IE_WAPI_MAX_LEN) || |
| (pRSNie->rsnIEdata[startPos+1] < DOT11F_IE_WAPI_MIN_LEN)) |
| { |
| limLog(pMac, LOGE, |
| FL("WAPI IE len %d not [%d,%d]"), |
| pRSNie->rsnIEdata[startPos+1], DOT11F_IE_WAPI_MIN_LEN, |
| DOT11F_IE_WAPI_MAX_LEN); |
| |
| return false; |
| } |
| } |
| #endif |
| else |
| { |
| //we will never be here, simply for completeness |
| return false; |
| } |
| startPos += 2 + pRSNie->rsnIEdata[startPos+1]; //EID + length field + length |
| len -= startPos; |
| }//while |
| |
| } |
| |
| return true; |
| } /*** end limIsRSNieValidInSmeReqMessage() ***/ |
| |
| /** |
| * limIsAddieValidInSmeReqMessage() |
| * |
| *FUNCTION: |
| * This function is called to verify if the Add IE |
| * received in various SME_REQ messages is valid or not |
| * |
| *LOGIC: |
| * Add IE validity checks are performed on only length |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pWSCie Pointer to received WSC IE |
| * @return true when WSC IE is valid, false otherwise |
| */ |
| |
| static tANI_U8 |
| limIsAddieValidInSmeReqMessage(tpAniSirGlobal pMac, tpSirAddie pAddie) |
| { |
| int left = pAddie->length; |
| tANI_U8 *ptr = pAddie->addIEdata; |
| tANI_U8 elem_id, elem_len; |
| |
| if (left == 0) |
| return true; |
| |
| while(left >= 2) |
| { |
| elem_id = ptr[0]; |
| elem_len = ptr[1]; |
| left -= 2; |
| if(elem_len > left) |
| { |
| limLog( pMac, LOGE, |
| FL("****Invalid Add IEs eid = %d elem_len=%d left=%d*****"), |
| elem_id,elem_len,left); |
| return false; |
| } |
| |
| left -= elem_len; |
| ptr += (elem_len + 2); |
| } |
| // there shouldn't be any left byte |
| |
| |
| return true; |
| } /*** end limIsAddieValidInSmeReqMessage() ***/ |
| |
| /** |
| * limSetRSNieWPAiefromSmeStartBSSReqMessage() |
| * |
| *FUNCTION: |
| * This function is called to verify if the RSN IE |
| * received in various SME_REQ messages is valid or not |
| * |
| *LOGIC: |
| * RSN IE validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pRSNie Pointer to received RSN IE |
| * @return true when RSN IE is valid, false otherwise |
| */ |
| |
| tANI_U8 |
| limSetRSNieWPAiefromSmeStartBSSReqMessage(tpAniSirGlobal pMac, |
| tpSirRSNie pRSNie, |
| tpPESession pSessionEntry) |
| { |
| tANI_U8 wpaIndex = 0; |
| tANI_U32 privacy, val; |
| tANI_U32 status; |
| |
| if (wlan_cfgGetInt(pMac, WNI_CFG_PRIVACY_ENABLED, |
| &privacy) != eSIR_SUCCESS) |
| { |
| limLog(pMac, LOGP, |
| FL("Unable to retrieve POI from CFG")); |
| } |
| |
| if (wlan_cfgGetInt(pMac, WNI_CFG_RSN_ENABLED, |
| &val) != eSIR_SUCCESS) |
| { |
| limLog(pMac, LOGP, |
| FL("Unable to retrieve RSN_ENABLED from CFG")); |
| } |
| |
| if (pRSNie->length && (!privacy || !val)) |
| { |
| // Privacy & RSN not enabled in CFG. |
| /** |
| * In order to allow mixed mode for Guest access |
| * allow BSS creation/join with no Privacy capability |
| * yet advertising WPA IE |
| */ |
| PELOG1(limLog(pMac, LOG1, FL("RSN ie len %d but PRIVACY %d RSN %d"), |
| pRSNie->length, privacy, val);) |
| } |
| |
| if (pRSNie->length) |
| { |
| if ((pRSNie->rsnIEdata[0] != SIR_MAC_RSN_EID) && |
| (pRSNie->rsnIEdata[0] != SIR_MAC_WPA_EID)) |
| { |
| limLog(pMac, LOGE, FL("RSN/WPA EID %d not [%d || %d]"), |
| pRSNie->rsnIEdata[0], SIR_MAC_RSN_EID, |
| SIR_MAC_WPA_EID); |
| return false; |
| } |
| |
| // Check validity of RSN IE |
| if ((pRSNie->rsnIEdata[0] == SIR_MAC_RSN_EID) && |
| #if 0 // Comparison always false |
| (pRSNie->rsnIEdata[1] > SIR_MAC_RSN_IE_MAX_LENGTH) || |
| #endif |
| (pRSNie->rsnIEdata[1] < SIR_MAC_RSN_IE_MIN_LENGTH)) |
| { |
| limLog(pMac, LOGE, FL("RSN IE len %d not [%d,%d]"), |
| pRSNie->rsnIEdata[1], SIR_MAC_RSN_IE_MIN_LENGTH, |
| SIR_MAC_RSN_IE_MAX_LENGTH); |
| return false; |
| } |
| |
| if (pRSNie->length > pRSNie->rsnIEdata[1] + 2) |
| { |
| if (pRSNie->rsnIEdata[0] != SIR_MAC_RSN_EID) |
| { |
| limLog(pMac, |
| LOGE, |
| FL("First byte[%d] in rsnIEdata is not RSN_EID"), |
| pRSNie->rsnIEdata[1]); |
| return false; |
| } |
| |
| limLog(pMac, |
| LOG1, |
| FL("WPA IE is present along with WPA2 IE")); |
| wpaIndex = 2 + pRSNie->rsnIEdata[1]; |
| } |
| else if ((pRSNie->length == pRSNie->rsnIEdata[1] + 2) && |
| (pRSNie->rsnIEdata[0] == SIR_MAC_RSN_EID)) |
| { |
| limLog(pMac, |
| LOG1, |
| FL("Only RSN IE is present")); |
| status = dot11fUnpackIeRSN(pMac,&pRSNie->rsnIEdata[2], |
| pRSNie->rsnIEdata[1], |
| &pSessionEntry->gStartBssRSNIe); |
| if (DOT11F_FAILED(status)) |
| { |
| limLog(pMac, |
| LOGE,FL("unpack failed for RSN IE (0x%08x)"), |
| status); |
| return false; |
| } |
| return true; |
| } |
| else if ((pRSNie->length == pRSNie->rsnIEdata[1] + 2) && |
| (pRSNie->rsnIEdata[0] == SIR_MAC_WPA_EID)) |
| { |
| limLog(pMac, |
| LOG1, |
| FL("Only WPA IE is present")); |
| |
| status = dot11fUnpackIeWPA(pMac,&pRSNie->rsnIEdata[6], |
| pRSNie->rsnIEdata[1] - 4, |
| &pSessionEntry->gStartBssWPAIe); |
| if (DOT11F_FAILED(status)) |
| { |
| limLog(pMac, |
| LOGE,FL("unpack failed for WPA IE (0x%08x)"), |
| status); |
| return false; |
| } |
| return true; |
| } |
| |
| // Check validity of WPA IE |
| if(wpaIndex +4 < SIR_MAC_MAX_IE_LENGTH ) |
| { |
| val = sirReadU32((tANI_U8 *) &pRSNie->rsnIEdata[wpaIndex + 2]); |
| |
| if ((pRSNie->rsnIEdata[wpaIndex] == SIR_MAC_WPA_EID) && |
| #if 0 // Comparison always false |
| (pRSNie->rsnIEdata[wpaIndex + 1] > SIR_MAC_WPA_IE_MAX_LENGTH) || |
| #endif |
| ((pRSNie->rsnIEdata[wpaIndex + 1] < SIR_MAC_WPA_IE_MIN_LENGTH) || |
| (SIR_MAC_WPA_OUI != val))) |
| { |
| limLog(pMac, LOGE, |
| FL("WPA IE len %d not [%d,%d] OR data 0x%x not 0x%x"), |
| pRSNie->rsnIEdata[1], SIR_MAC_RSN_IE_MIN_LENGTH, |
| SIR_MAC_RSN_IE_MAX_LENGTH, val, SIR_MAC_WPA_OUI); |
| |
| return false; |
| } |
| else |
| { |
| /* Both RSN and WPA IEs are present */ |
| status = dot11fUnpackIeRSN(pMac,&pRSNie->rsnIEdata[2], |
| pRSNie->rsnIEdata[1], &pSessionEntry->gStartBssRSNIe); |
| if (DOT11F_FAILED(status)) |
| { |
| limLog(pMac,LOGE,FL("unpack failed for RSN IE status:(0x%08x)"), |
| status); |
| return false; |
| } |
| |
| status = dot11fUnpackIeWPA(pMac,&pRSNie->rsnIEdata[wpaIndex + 6], |
| pRSNie->rsnIEdata[wpaIndex + 1]-4, |
| &pSessionEntry->gStartBssWPAIe); |
| if (DOT11F_FAILED(status)) |
| { |
| limLog(pMac, LOGE,FL("unpack failed for WPA IE status:(0x%08x)"), |
| status); |
| return false; |
| } |
| |
| } |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } /*** end limSetRSNieWPAiefromSmeStartBSSReqMessage() ***/ |
| |
| |
| |
| |
| /** |
| * limIsBssDescrValidInSmeReqMessage() |
| * |
| *FUNCTION: |
| * This function is called to verify if the BSS Descr |
| * received in various SME_REQ messages is valid or not |
| * |
| *LOGIC: |
| * BSS Descritipion validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pBssDescr Pointer to received Bss Descritipion |
| * @return true when BSS description is valid, false otherwise |
| */ |
| |
| static tANI_U8 |
| limIsBssDescrValidInSmeReqMessage(tpAniSirGlobal pMac, |
| tpSirBssDescription pBssDescr) |
| { |
| tANI_U8 valid = true; |
| |
| if (limIsAddrBC(pBssDescr->bssId) || |
| !pBssDescr->channelId) |
| { |
| valid = false; |
| goto end; |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsBssDescrValidInSmeReqMessage() ***/ |
| |
| |
| |
| /** |
| * limIsSmeStartReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_START_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMsg - Pointer to received SME_START_BSS_REQ message |
| * @return true when received SME_START_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeStartReqValid(tpAniSirGlobal pMac, tANI_U32 *pMsg) |
| { |
| tANI_U8 valid = true; |
| |
| if (((tpSirSmeStartReq) pMsg)->length != sizeof(tSirSmeStartReq)) |
| { |
| /** |
| * Invalid length in START_REQ message |
| * Log error. |
| */ |
| limLog(pMac, LOGW, |
| FL("Invalid length %d in eWNI_SME_START_REQ"), |
| ((tpSirSmeStartReq) pMsg)->length); |
| |
| valid = false; |
| goto end; |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsSmeStartReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeStartBssReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_START_BSS_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pStartBssReq Pointer to received SME_START_BSS_REQ message |
| * @return true when received SME_START_BSS_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeStartBssReqValid(tpAniSirGlobal pMac, |
| tpSirSmeStartBssReq pStartBssReq) |
| { |
| tANI_U8 i = 0; |
| tANI_U8 valid = true; |
| |
| PELOG1(limLog(pMac, LOG1, |
| FL("Parsed START_BSS_REQ fields are bssType=%s (%d), channelId=%d," |
| " SSID len=%d, rsnIE len=%d, nwType=%d, rateset len=%d"), |
| lim_BssTypetoString(pStartBssReq->bssType), |
| pStartBssReq->bssType, |
| pStartBssReq->channelId, |
| pStartBssReq->ssId.length, |
| pStartBssReq->rsnIE.length, |
| pStartBssReq->nwType, |
| pStartBssReq->operationalRateSet.numRates);) |
| |
| switch (pStartBssReq->bssType) |
| { |
| case eSIR_INFRASTRUCTURE_MODE: |
| /** |
| * Should not have received start BSS req with bssType |
| * Infrastructure on STA. |
| * Log error. |
| */ |
| limLog(pMac, LOGE, |
| FL("Invalid bssType %d in eWNI_SME_START_BSS_REQ"), |
| pStartBssReq->bssType); |
| valid = false; |
| goto end; |
| break; |
| |
| case eSIR_IBSS_MODE: |
| break; |
| |
| /* Added for BT AMP support */ |
| case eSIR_BTAMP_STA_MODE: |
| break; |
| |
| /* Added for BT AMP support */ |
| case eSIR_BTAMP_AP_MODE: |
| break; |
| |
| /* Added for SoftAP support */ |
| case eSIR_INFRA_AP_MODE: |
| break; |
| |
| default: |
| /** |
| * Should not have received start BSS req with bssType |
| * other than Infrastructure/IBSS. |
| * Log error |
| */ |
| limLog(pMac, LOGW, |
| FL("Invalid bssType %d in eWNI_SME_START_BSS_REQ"), |
| pStartBssReq->bssType); |
| |
| valid = false; |
| goto end; |
| } |
| |
| /* This below code is client specific code. TODO */ |
| if (pStartBssReq->bssType == eSIR_IBSS_MODE) |
| { |
| if (!pStartBssReq->ssId.length || |
| (pStartBssReq->ssId.length > SIR_MAC_MAX_SSID_LENGTH)) |
| { |
| // Invalid length for SSID. |
| // Reject START_BSS_REQ |
| limLog(pMac, LOGW, |
| FL("Invalid SSID length in eWNI_SME_START_BSS_REQ")); |
| |
| valid = false; |
| goto end; |
| } |
| } |
| |
| |
| if (!limIsRSNieValidInSmeReqMessage(pMac, &pStartBssReq->rsnIE)) |
| { |
| valid = false; |
| goto end; |
| } |
| |
| if (pStartBssReq->nwType != eSIR_11A_NW_TYPE && |
| pStartBssReq->nwType != eSIR_11B_NW_TYPE && |
| pStartBssReq->nwType != eSIR_11G_NW_TYPE) |
| { |
| valid = false; |
| goto end; |
| } |
| |
| if (pStartBssReq->nwType == eSIR_11A_NW_TYPE) |
| { |
| for (i = 0; i < pStartBssReq->operationalRateSet.numRates; i++) |
| if (!sirIsArate(pStartBssReq->operationalRateSet.rate[i] & 0x7F)) |
| { |
| // Invalid Operational rates |
| // Reject START_BSS_REQ |
| limLog(pMac, LOGW, |
| FL("Invalid operational rates in eWNI_SME_START_BSS_REQ")); |
| sirDumpBuf(pMac, SIR_LIM_MODULE_ID, LOG2, |
| pStartBssReq->operationalRateSet.rate, |
| pStartBssReq->operationalRateSet.numRates); |
| |
| valid = false; |
| goto end; |
| } |
| } |
| // check if all the rates in the operatioal rate set are legal 11G rates |
| else if (pStartBssReq->nwType == eSIR_11G_NW_TYPE) |
| { |
| for (i = 0; i < pStartBssReq->operationalRateSet.numRates; i++) |
| if (!sirIsGrate(pStartBssReq->operationalRateSet.rate[i] & 0x7F)) |
| { |
| // Invalid Operational rates |
| // Reject START_BSS_REQ |
| limLog(pMac, LOGW, |
| FL("Invalid operational rates in eWNI_SME_START_BSS_REQ")); |
| sirDumpBuf(pMac, SIR_LIM_MODULE_ID, LOG2, |
| pStartBssReq->operationalRateSet.rate, |
| pStartBssReq->operationalRateSet.numRates); |
| |
| valid = false; |
| goto end; |
| } |
| } |
| else |
| { |
| for (i = 0; i < pStartBssReq->operationalRateSet.numRates; i++) |
| if (!sirIsBrate(pStartBssReq->operationalRateSet.rate[i] & 0x7F)) |
| { |
| // Invalid Operational rates |
| // Reject START_BSS_REQ |
| limLog(pMac, LOGW, |
| FL("Invalid operational rates in eWNI_SME_START_BSS_REQ")); |
| sirDumpBuf(pMac, SIR_LIM_MODULE_ID, LOG2, |
| pStartBssReq->operationalRateSet.rate, |
| pStartBssReq->operationalRateSet.numRates); |
| |
| valid = false; |
| goto end; |
| } |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsSmeStartBssReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeJoinReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_JOIN_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pJoinReq Pointer to received SME_JOIN_REQ message |
| * @return true when received SME_JOIN_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeJoinReqValid(tpAniSirGlobal pMac, tpSirSmeJoinReq pJoinReq) |
| { |
| tANI_U8 valid = true; |
| |
| |
| //If force_rsne_override is enabled that mean User has provided the |
| //test RSNIE which need to be send as it is in assoc req and thus RSNIE |
| //validity is not required. |
| if (!pJoinReq->force_rsne_override && |
| !limIsRSNieValidInSmeReqMessage(pMac, &pJoinReq->rsnIE)) |
| { |
| limLog(pMac, LOGE, |
| FL("received SME_JOIN_REQ with invalid RSNIE")); |
| valid = false; |
| goto end; |
| } |
| |
| if (!limIsAddieValidInSmeReqMessage(pMac, &pJoinReq->addIEScan)) |
| { |
| limLog(pMac, LOGE, |
| FL("received SME_JOIN_REQ with invalid additional IE for scan")); |
| valid = false; |
| goto end; |
| } |
| |
| if (!limIsAddieValidInSmeReqMessage(pMac, &pJoinReq->addIEAssoc)) |
| { |
| limLog(pMac, LOGE, |
| FL("received SME_JOIN_REQ with invalid additional IE for assoc")); |
| valid = false; |
| goto end; |
| } |
| |
| |
| if (!limIsBssDescrValidInSmeReqMessage(pMac, |
| &pJoinReq->bssDescription)) |
| { |
| /// Received eWNI_SME_JOIN_REQ with invalid BSS Info |
| // Log the event |
| limLog(pMac, LOGE, |
| FL("received SME_JOIN_REQ with invalid bssInfo")); |
| |
| valid = false; |
| goto end; |
| } |
| |
| /* |
| Reject Join Req if the Self Mac Address and |
| the Ap's Mac Address is same |
| */ |
| if ( vos_mem_compare( (tANI_U8* ) pJoinReq->selfMacAddr, |
| (tANI_U8 *) pJoinReq->bssDescription.bssId, |
| (tANI_U8) (sizeof(tSirMacAddr)))) |
| { |
| // Log the event |
| limLog(pMac, LOGE, |
| FL("received SME_JOIN_REQ with Self Mac and BSSID Same")); |
| |
| valid = false; |
| goto end; |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsSmeJoinReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeDisassocReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_DISASSOC_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pDisassocReq Pointer to received SME_DISASSOC_REQ message |
| * @return true When received SME_DISASSOC_REQ is formatted |
| * correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeDisassocReqValid(tpAniSirGlobal pMac, |
| tpSirSmeDisassocReq pDisassocReq, tpPESession psessionEntry) |
| { |
| if (limIsGroupAddr(pDisassocReq->peerMacAddr) && |
| !limIsAddrBC(pDisassocReq->peerMacAddr)) |
| return false; |
| |
| |
| return true; |
| } /*** end limIsSmeDisassocReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeDisassocCnfValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_DISASSOC_CNF message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pDisassocCnf Pointer to received SME_DISASSOC_REQ message |
| * @return true When received SME_DISASSOC_CNF is formatted |
| * correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeDisassocCnfValid(tpAniSirGlobal pMac, |
| tpSirSmeDisassocCnf pDisassocCnf, tpPESession psessionEntry) |
| { |
| if (limIsGroupAddr(pDisassocCnf->peerMacAddr)) |
| return false; |
| |
| return true; |
| } /*** end limIsSmeDisassocCnfValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeDeauthReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_DEAUTH_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMac Pointer to Global MAC structure |
| * @param pDeauthReq Pointer to received SME_DEAUTH_REQ message |
| * @return true When received SME_DEAUTH_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeDeauthReqValid(tpAniSirGlobal pMac, tpSirSmeDeauthReq pDeauthReq, tpPESession psessionEntry) |
| { |
| if (limIsGroupAddr(pDeauthReq->peerMacAddr) && |
| !limIsAddrBC(pDeauthReq->peerMacAddr)) |
| return false; |
| |
| return true; |
| } /*** end limIsSmeDeauthReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeScanReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_SCAN_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pScanReq Pointer to received SME_SCAN_REQ message |
| * @return true when received SME_SCAN_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeScanReqValid(tpAniSirGlobal pMac, tpSirSmeScanReq pScanReq) |
| { |
| tANI_U8 valid = true; |
| tANI_U8 i = 0; |
| |
| if (pScanReq->numSsid > SIR_SCAN_MAX_NUM_SSID) |
| { |
| valid = false; |
| limLog(pMac, LOGE, FL("Number of SSIDs > SIR_SCAN_MAX_NUM_SSID")); |
| goto end; |
| } |
| |
| for (i = 0; i < pScanReq->numSsid; i++) |
| { |
| if (pScanReq->ssId[i].length > SIR_MAC_MAX_SSID_LENGTH) |
| { |
| limLog(pMac, LOGE, |
| FL("Requested SSID length > SIR_MAC_MAX_SSID_LENGTH")); |
| valid = false; |
| goto end; |
| } |
| } |
| if ((pScanReq->bssType < 0) || (pScanReq->bssType > eSIR_AUTO_MODE)) |
| { |
| limLog(pMac, LOGE, FL("Invalid BSS Type")); |
| valid = false; |
| } |
| if (limIsGroupAddr(pScanReq->bssId) && !limIsAddrBC(pScanReq->bssId)) |
| { |
| valid = false; |
| limLog(pMac, LOGE, FL("BSSID is group addr and is not Broadcast Addr")); |
| } |
| if (!(pScanReq->scanType == eSIR_PASSIVE_SCAN || pScanReq->scanType == eSIR_ACTIVE_SCAN)) |
| { |
| valid = false; |
| limLog(pMac, LOGE, FL("Invalid Scan Type")); |
| } |
| if (pScanReq->channelList.numChannels > SIR_MAX_NUM_CHANNELS) |
| { |
| valid = false; |
| limLog(pMac, LOGE, FL("Number of Channels > SIR_MAX_NUM_CHANNELS")); |
| } |
| |
| /* |
| ** check min/max channelTime range |
| **/ |
| |
| if (valid) |
| { |
| if ((pScanReq->scanType == eSIR_ACTIVE_SCAN) && |
| (pScanReq->maxChannelTime < pScanReq->minChannelTime)) |
| { |
| limLog(pMac, LOGE, FL("Max Channel Time < Min Channel Time")); |
| valid = false; |
| } |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsSmeScanReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeAuthReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_AUTH_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pAuthReq Pointer to received SME_AUTH_REQ message |
| * @return true when received SME_AUTH_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeAuthReqValid(tpSirSmeAuthReq pAuthReq) |
| { |
| tANI_U8 valid = true; |
| |
| if (limIsGroupAddr(pAuthReq->peerMacAddr) || |
| (pAuthReq->authType > eSIR_AUTO_SWITCH) || |
| !pAuthReq->channelNumber) |
| { |
| valid = false; |
| goto end; |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsSmeAuthReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeSetContextReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_SET_CONTEXT_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMsg - Pointer to received SME_SET_CONTEXT_REQ message |
| * @return true when received SME_SET_CONTEXT_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeSetContextReqValid(tpAniSirGlobal pMac, tpSirSmeSetContextReq pSetContextReq) |
| { |
| tANI_U8 i = 0; |
| tANI_U8 valid = true; |
| tpSirKeys pKey = pSetContextReq->keyMaterial.key; |
| |
| if ((pSetContextReq->keyMaterial.edType != eSIR_ED_WEP40) && |
| (pSetContextReq->keyMaterial.edType != eSIR_ED_WEP104) && |
| (pSetContextReq->keyMaterial.edType != eSIR_ED_NONE) && |
| #ifdef FEATURE_WLAN_WAPI |
| (pSetContextReq->keyMaterial.edType != eSIR_ED_WPI) && |
| #endif |
| !pSetContextReq->keyMaterial.numKeys) |
| { |
| /** |
| * No keys present in case of TKIP or CCMP |
| * Log error. |
| */ |
| limLog(pMac, LOGW, |
| FL("No keys present in SME_SETCONTEXT_REQ for edType=%d"), |
| pSetContextReq->keyMaterial.edType); |
| |
| valid = false; |
| goto end; |
| } |
| |
| if (pSetContextReq->keyMaterial.numKeys && |
| (pSetContextReq->keyMaterial.edType == eSIR_ED_NONE)) |
| { |
| /** |
| * Keys present in case of no ED policy |
| * Log error. |
| */ |
| limLog(pMac, LOGW, |
| FL("Keys present in SME_SETCONTEXT_REQ for edType=%d"), |
| pSetContextReq->keyMaterial.edType); |
| |
| valid = false; |
| goto end; |
| } |
| |
| if (pSetContextReq->keyMaterial.edType >= eSIR_ED_NOT_IMPLEMENTED) |
| { |
| /** |
| * Invalid edType in the message |
| * Log error. |
| */ |
| limLog(pMac, LOGW, |
| FL("Invalid edType=%d in SME_SETCONTEXT_REQ"), |
| pSetContextReq->keyMaterial.edType); |
| |
| valid = false; |
| goto end; |
| } |
| else if (pSetContextReq->keyMaterial.edType > eSIR_ED_NONE) |
| { |
| tANI_U32 poi; |
| |
| if (wlan_cfgGetInt(pMac, WNI_CFG_PRIVACY_ENABLED, |
| &poi) != eSIR_SUCCESS) |
| { |
| limLog(pMac, LOGP, |
| FL("Unable to retrieve POI from CFG")); |
| } |
| |
| if (!poi) |
| { |
| /** |
| * Privacy is not enabled |
| * In order to allow mixed mode for Guest access |
| * allow BSS creation/join with no Privacy capability |
| * yet advertising WPA IE |
| */ |
| PELOG1(limLog(pMac, LOG1, |
| FL("Privacy is not enabled, yet non-None EDtype=%d in SME_SETCONTEXT_REQ"), |
| pSetContextReq->keyMaterial.edType);) |
| } |
| } |
| |
| for (i = 0; i < pSetContextReq->keyMaterial.numKeys; i++) |
| { |
| if (((pSetContextReq->keyMaterial.edType == eSIR_ED_WEP40) && |
| (pKey->keyLength != 5)) || |
| ((pSetContextReq->keyMaterial.edType == eSIR_ED_WEP104) && |
| (pKey->keyLength != 13)) || |
| ((pSetContextReq->keyMaterial.edType == eSIR_ED_TKIP) && |
| (pKey->keyLength != 32)) || |
| #ifdef FEATURE_WLAN_WAPI |
| ((pSetContextReq->keyMaterial.edType == eSIR_ED_WPI) && |
| (pKey->keyLength != 32)) || |
| #endif |
| ((pSetContextReq->keyMaterial.edType == eSIR_ED_CCMP) && |
| (pKey->keyLength != 16))) |
| { |
| /** |
| * Invalid key length for a given ED type |
| * Log error. |
| */ |
| limLog(pMac, LOGW, |
| FL("Invalid keyLength =%d for edType=%d in SME_SETCONTEXT_REQ"), |
| pKey->keyLength, pSetContextReq->keyMaterial.edType); |
| |
| valid = false; |
| goto end; |
| } |
| pKey++; |
| } |
| |
| end: |
| return valid; |
| } /*** end limIsSmeSetContextReqValid() ***/ |
| |
| |
| |
| /** |
| * limIsSmeStopBssReqValid() |
| * |
| *FUNCTION: |
| * This function is called by limProcessSmeReqMessages() upon |
| * receiving SME_STOP_BSS_REQ message from application. |
| * |
| *LOGIC: |
| * Message validity checks are performed in this function |
| * |
| *ASSUMPTIONS: |
| * |
| *NOTE: |
| * |
| * @param pMsg - Pointer to received SME_STOP_BSS_REQ message |
| * @return true when received SME_STOP_BSS_REQ is formatted correctly |
| * false otherwise |
| */ |
| |
| tANI_U8 |
| limIsSmeStopBssReqValid(tANI_U32 *pMsg) |
| { |
| tANI_U8 valid = true; |
| |
| return valid; |
| } /*** end limIsSmeStopBssReqValid() ***/ |
| |
| |
| /** |
| * limGetBssIdFromSmeJoinReqMsg() |
| * |
| *FUNCTION: |
| * This function is called in various places to get BSSID |
| * from BSS description/Neighbor BSS Info in the SME_JOIN_REQ/ |
| * SME_REASSOC_REQ message. |
| * |
| *PARAMS: |
| * |
| *LOGIC: |
| * |
| *ASSUMPTIONS: |
| * NA |
| * |
| *NOTE: |
| * NA |
| * |
| * @param pBuf - Pointer to received SME_JOIN/SME_REASSOC_REQ |
| * message |
| * @return pBssId - Pointer to BSSID |
| */ |
| |
| tANI_U8* |
| limGetBssIdFromSmeJoinReqMsg(tANI_U8 *pBuf) |
| { |
| if (!pBuf) |
| return NULL; |
| |
| pBuf += sizeof(tANI_U32); // skip message header |
| |
| |
| pBuf += limGetU16(pBuf) + sizeof(tANI_U16); // skip RSN IE |
| |
| pBuf += sizeof(tANI_U16); // skip length of BSS description |
| |
| return (pBuf); |
| } /*** end limGetBssIdFromSmeJoinReqMsg() ***/ |
| |
| |