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ACRunState.c
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ACRunState.c
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/************************************************************************************************
* Copyright (c) 2006-2009 Laboratorio di Sistemi di Elaborazione e Bioingegneria Informatica *
* Universita' Campus BioMedico - Italy *
* *
* 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., 59 Temple Place - Suite 330, Boston, *
* MA 02111-1307, USA.
*
* In addition, as a special exception, the copyright holders give permission to link the *
* code of portions of this program with the OpenSSL library under certain conditions as *
* described in each individual source file, and distribute linked combinations including *
* the two. You must obey the GNU General Public License in all respects for all of the *
* code used other than OpenSSL. If you modify file(s) with this exception, you may *
* extend this exception to your version of the file(s), but you are not obligated to do *
* so. If you do not wish to do so, delete this exception statement from your version. *
* If you delete this exception statement from all source files in the program, then also *
* delete it here. *
* *
* -------------------------------------------------------------------------------------------- *
* Project: Capwap *
* *
* Authors : Ludovico Rossi ([email protected]) *
* Del Moro Andrea ([email protected]) *
* Giovannini Federica ([email protected]) *
* Massimo Vellucci ([email protected]) *
* Mauro Bisson ([email protected]) *
* Antonio Davoli ([email protected]) *
************************************************************************************************/
#include "CWAC.h"
#include "CWVendorPayloads.h"
#include "CWFreqPayloads.h"
#include "WUM.h"
#include "common.h"
#include "ieee802_11_defs.h"
#ifdef DMALLOC
#include "../dmalloc-5.5.0/dmalloc.h"
#endif
CWBool CWACParseGenericRunMessage(int WTPIndex,
CWProtocolMessage *msg,
CWControlHeaderValues* controlVal);
CWBool CWParseConfigurationUpdateResponseMessage(CWProtocolMessage* msgPtr,
int len,
CWProtocolResultCode* resultCode,
CWProtocolVendorSpecificValues** protocolValues);
CWBool CWSaveConfigurationUpdateResponseMessage(CWProtocolResultCode resultCode,
int WTPIndex,
CWProtocolVendorSpecificValues* protocolValues);
CWBool CWParseClearConfigurationResponseMessage(CWProtocolMessage* msgPtr,
int len,
CWProtocolResultCode* resultCode);
CWBool CWParseStationConfigurationResponseMessage(CWProtocolMessage* msgPtr,
int len,
CWProtocolResultCode* resultCode);
CWBool CWParseWTPDataTransferRequestMessage(CWProtocolMessage *msgPtr,
int len,
CWProtocolWTPDataTransferRequestValues *valuesPtr);
CWBool CWAssembleWTPDataTransferResponse(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU, int seqNum);
CWBool CWParseWTPEventRequestMessage(CWProtocolMessage *msgPtr,
int len,
CWProtocolWTPEventRequestValues *valuesPtr);
CWBool CWSaveWTPEventRequestMessage(CWProtocolWTPEventRequestValues *WTPEventRequest,
CWWTPProtocolManager *WTPProtocolManager);
CWBool CWAssembleWTPEventResponse(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU,
int seqNum);
CWBool CWParseChangeStateEventRequestMessage2(CWProtocolMessage *msgPtr,
int len,
CWProtocolChangeStateEventRequestValues **valuesPtr);
CWBool CWParseEchoRequestMessage(CWProtocolMessage *msgPtr,
int len);
CWBool CWAssembleEchoResponse(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU,
int seqNum);
CWBool CWStartNeighborDeadTimer(int WTPIndex);
CWBool CWStopNeighborDeadTimer(int WTPIndex);
CWBool CWRestartNeighborDeadTimer(int WTPIndex);
CWBool CWRestartNeighborDeadTimerForEcho(int WTPIndex);
/* argument passed to the thread func */
typedef struct {
int index;
CWSocket sock;
int interfaceIndex;
} CWACThreadArg;
int flush_pcap(u_char *buf,int len,char *filename){
FILE *file;
file = fopen(filename,"a+");
u_char index=0x00;
int cnt=0;
int i;
int giro=0;
for(i=0;cnt<len ;i++){
fprintf(file,"0%02X0 ",index);
for(;cnt<len;){
fprintf(file,"%02X ",buf[cnt]);
cnt++;
if(giro==15){
giro=0;
break;
}
giro++;
}
fprintf(file,"\n");
index++;
}
fprintf(file,"\n");
fclose(file);
return 0;
}
int isEAPOL_Frame( unsigned char *buf, int len){
unsigned char rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
int i;
for(i=0; i<6; i++)if(rfc1042_header[i]!=buf[i + HLEN_80211])return 0;
return 1;
}
CWBool ACEnterRun(int WTPIndex, CWProtocolMessage *msgPtr, CWBool dataFlag) {
CWBool toSend= CW_FALSE, timerSet = CW_TRUE;
CWControlHeaderValues controlVal;
CWProtocolMessage* messages =NULL;
int messagesCount=0, k=0;
unsigned char StationMacAddr[MAC_ADDR_LEN];
unsigned char BSSID[MAC_ADDR_LEN];
char string[10];
char socketctl_path_name[50];
char socketserv_path_name[50];
int msglen = msgPtr->offset;
int offsetFrameReceived;
short int frameControl;
char * frameResponse=NULL;
int frameRespLen=0, i=0;
CWProtocolMessage *completeMsgPtr = NULL;
CWProtocolMessage * msgFrame;
int fragmentsNum=0, dataSocket=0;
CWNetworkLev4Address address;
int offsetFrame8023=0;
unsigned char frame8023[CW_BUFFER_SIZE];
int frame8023len=0;
nodeAVL* tmpNode=NULL;
struct CWFrameDataHdr dataFrame;
int write_bytes;
int indexWTP;
int indexRadio=0, indexWlan=0, stop=0;
unsigned char * dataFrameBuffer;
int offsetDataFrame=0;
msgPtr->offset = 0;
if(dataFlag){
/* We have received a Data Message... now just log this event and do actions by the dataType */
// CWDebugLog("--> Received a DATA Message: Type: %d", msgPtr->data_msgType);
if(msgPtr->data_msgType == CW_DATA_MSG_FRAME_TYPE) {
/*Retrive mac address station from msg*/
memset(StationMacAddr, 0, MAC_ADDR_LEN);
memcpy(StationMacAddr, msgPtr->msg+SOURCE_ADDR_START, MAC_ADDR_LEN);
int seqNum = CWGetSeqNum();
CWLog("CW_DATA_MSG_FRAME_TYPE. Non faccio nulla?");
}
else if(msgPtr->data_msgType == CW_DATA_MSG_KEEP_ALIVE_TYPE){
char * valPtr=NULL;
CWProtocolMessage *messages = NULL;
CWProtocolMessage sessionIDmsgElem;
int fragmentsNum = 0;
int i;
int dataSocket=0;
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWNetworkLev4Address address;
CWParseFormatMsgElem(msgPtr, &elemType, &elemLen);
valPtr = CWParseSessionID(msgPtr, elemLen);
CWAssembleMsgElemSessionID(&sessionIDmsgElem, valPtr);
/*
* Elena Agostini - 02/2014: BUG Valgrind: sessionIDmsgElem.data_msgType not initialized
*/
sessionIDmsgElem.data_msgType = CW_DATA_MSG_KEEP_ALIVE_TYPE;
if (!CWAssembleDataMessage(&messages,
&fragmentsNum,
gWTPs[WTPIndex].pathMTU,
&sessionIDmsgElem,
NULL,
CW_PACKET_PLAIN,
1
))
{
CWLog("Failure Assembling KeepAlive Request");
if(messages)
for(i = 0; i < fragmentsNum; i++) {
CW_FREE_PROTOCOL_MESSAGE(messages[i]);
}
CW_FREE_OBJECT(messages);
return CW_FALSE;
}
#ifndef CW_DTLS_DATA_CHANNEL
for(i = 0; i < gACSocket.count; i++) {
if (gACSocket.interfaces[i].sock == gWTPs[WTPIndex].socket){
dataSocket = gACSocket.interfaces[i].dataSock;
CW_COPY_NET_ADDR_PTR(&address,&(gWTPs[WTPIndex].dataaddress));
break;
}
}
if (dataSocket == 0){
CWLog("data socket of WTP %d isn't ready.");
return CW_FALSE;
}
#endif
//Elena
for(i = 0; i < fragmentsNum; i++) {
/*
* Elena Agostini - 03/2014: DTLS Data Session AC
*/
#ifdef CW_DTLS_DATA_CHANNEL
if(!(CWSecuritySend(gWTPs[WTPIndex].sessionData, messages[i].msg, messages[i].offset)))
#else
if(!CWNetworkSendUnsafeUnconnected( dataSocket, &(address), messages[i].msg, messages[i].offset))
#endif
{
CWLog("Failure sending KeepAlive Request");
int k;
for(k = 0; k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(messages[k]);
}
CW_FREE_OBJECT(messages);
break;
}
}
CWLog("Inviato KeepAlive");
int k;
for(k = 0; messages && k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(messages[k]);
}
CW_FREE_OBJECT(messages);
}else if(msgPtr->data_msgType == CW_IEEE_802_3_FRAME_TYPE){
CWDebugLog("Write 802.3 data to TAP[%d], len:%d",gWTPs[WTPIndex].tap_fd,msglen);
//write(gWTPs[WTPIndex].tap_fd, msgPtr->msg, msglen);
write(ACTap_FD, msgPtr->msg, msglen);
}
/* Elena Agostini: 80211 Frame Management or Data */
else if(msgPtr->data_msgType == CW_IEEE_802_11_FRAME_TYPE) {
if(!CW80211ParseFrameIEControl(msgPtr->msg, &(offsetFrameReceived), &(frameControl)))
return CW_FALSE;
#ifdef SPLIT_MAC
//if( WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_NULLFUNC)
if( WLAN_FC_GET_TYPE(frameControl) == WLAN_FC_TYPE_DATA )
{
if(!CW80211ParseDataFrameToDS(msgPtr->msg, &(dataFrame)))
{
CWLog("CW80211: Error parsing data frame");
return CW_FALSE;
}
/*
CWLog("**RICEVUTO DA WTP FRAME**");
CWLog("dataFrame.frameControl: %02x", dataFrame.frameControl);
CWLog("dataFrame.DA: %02x: --- :%02x: --", (int) dataFrame.DA[0], (int) dataFrame.DA[4]);
CWLog("dataFrame.SA: %02x: --- :%02x: --", (int) dataFrame.SA[0], (int) dataFrame.SA[4]);
CWLog("dataFrame.BSSID: %02x: --- :%02x: --", (int) dataFrame.BSSID[0], (int) dataFrame.BSSID[4]);
*/
unsigned char * dataHdr = CW80211AssembleDataFrameHdr(dataFrame.SA, dataFrame.DA, dataFrame.BSSID, dataFrame.seqCtrl, &(offsetDataFrame), 0, 1);
if(dataHdr == NULL)
return CW_FALSE;
CW_CREATE_ARRAY_CALLOC_ERR(dataFrameBuffer, msglen, char, { return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL); });
CW_COPY_MEMORY(dataFrameBuffer, dataHdr, HLEN_80211);
CW_COPY_MEMORY(dataFrameBuffer+HLEN_80211, msgPtr->msg+HLEN_80211, msglen-HLEN_80211);
//Broadcast
if(checkAddressBroadcast(dataFrame.DA))
{
if(!CWConvertDataFrame_80211_to_8023(msgPtr->msg, msglen, frame8023, &(frame8023len)))
return CW_FALSE;
write_bytes = write(ACTap_FD, frame8023, frame8023len);
if(write_bytes != frame8023len){
CWLog("Error:. ByteToWrite:%d, ByteWritten:%d ",frame8023len, write_bytes);
}
for(indexWTP=0; indexWTP<gMaxWTPs; indexWTP++)
{
for(indexRadio=0; indexRadio<gWTPs[indexWTP].WTPProtocolManager.radiosInfo.radioCount; indexRadio++)
{
for(indexWlan=0; indexWlan<WTP_MAX_INTERFACES; indexWlan++)
{
if(
gWTPs[indexWTP].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].typeInterface == CW_AP_MODE &&
gWTPs[indexWTP].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID!=NULL
)
{
// CWLog("Invio a WTP %d radio %d wlan %d frameRespLen: %d msglen: %d", indexWTP, indexRadio, indexWlan, frameRespLen, msglen);
CW_CREATE_OBJECT_ERR(msgFrame, CWProtocolMessage, {return CW_FALSE;} );
CW_CREATE_PROTOCOL_MESSAGE(*msgFrame, msglen, {return CW_FALSE;} );
/*
* FromDS per le stazioni riceventi
* DA: broadcast
* BSSID: quello del WTP/radio (byte 10)
* SA: STAx
*/
CW_COPY_MEMORY(
(dataFrameBuffer+LEN_IE_FRAME_CONTROL+LEN_IE_DURATION+ETH_ALEN),
gWTPs[indexWTP].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID,
ETH_ALEN);
CW_COPY_MEMORY(msgFrame->msg, dataFrameBuffer, msglen);
msgFrame->offset=msglen;
msgFrame->data_msgType = CW_IEEE_802_11_FRAME_TYPE;
if (!CWAssembleDataMessage(&completeMsgPtr, &fragmentsNum, gWTPs[WTPIndex].pathMTU, msgFrame, NULL,
#ifdef CW_DTLS_DATA_CHANNEL
CW_PACKET_CRYPT,
#else
CW_PACKET_PLAIN,
#endif
0))
{
for(k = 0; k < fragmentsNum; k++){
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
CW_FREE_PROTOCOL_MESSAGE(*msgFrame);
CW_FREE_OBJECT(msgFrame);
}
#ifndef CW_DTLS_DATA_CHANNEL
for(i = 0; i < gACSocket.count; i++) {
if (gACSocket.interfaces[i].sock == gWTPs[indexWTP].socket){
dataSocket = gACSocket.interfaces[i].dataSock;
CW_COPY_NET_ADDR_PTR(&address,&(gWTPs[indexWTP].dataaddress));
break;
}
}
if (dataSocket == 0){
CWLog("data socket of WTP %d isn't ready.");
return CW_FALSE;
}
#endif
for(i = 0; i < fragmentsNum; i++) {
#ifdef CW_DTLS_DATA_CHANNEL
if(!(CWSecuritySend(gWTPs[indexWTP].sessionData, completeMsgPtr[i].msg, completeMsgPtr[i].offset)))
#else
if(!CWNetworkSendUnsafeUnconnected(dataSocket, &(address), completeMsgPtr[i].msg, completeMsgPtr[i].offset))
#endif
{
CWLog("Failure sending KeepAlive Request");
int k;
for(k = 0; k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
break;
}
}
CWLog("Inviato Frame 80211 a WTP");
int k;
for(k = 0; messages && k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
}
}
}
}
}
else
{
//---- Search AVL node
CWThreadMutexLock(&mutexAvlTree);
tmpNode = AVLfind(dataFrame.DA, avlTree);
CWThreadMutexUnlock(&mutexAvlTree);
//----
//Destinatario non associato
if(tmpNode == NULL)
{
// CWLog("Destinatario non associato");
if(!CWConvertDataFrame_80211_to_8023(msgPtr->msg, msglen, frame8023, &(frame8023len)))
return CW_FALSE;
write_bytes = write(ACTap_FD, frame8023, frame8023len);
if(write_bytes != frame8023len){
CWLog("%02X %02X %02X %02X %02X %02X ",msgPtr->msg[0], msgPtr->msg[1], msgPtr->msg[2], msgPtr->msg[3], msgPtr->msg[4], msgPtr->msg[5]);
CWLog("Error:. ByteToWrite:%d, ByteWritten:%d ",frame8023len, write_bytes);
}
}
//Destinatario associato ad un WTP
else
{
// CWLog("Destinatario associato");
CW_CREATE_OBJECT_ERR(msgFrame, CWProtocolMessage, { return CW_FALSE;} );
CW_CREATE_PROTOCOL_MESSAGE(*msgFrame, msglen, { return CW_FALSE;} );
CW_COPY_MEMORY((dataFrameBuffer+LEN_IE_FRAME_CONTROL+LEN_IE_DURATION+ETH_ALEN), tmpNode->BSSID, ETH_ALEN);
/*
struct CWFrameDataHdr dataFrameFromDS;
/*
if(!CW80211ParseDataFrameFromDS(dataFrameBuffer, &(dataFrameFromDS)))
{
CWLog("CW80211: Error parsing data frame");
return CW_FALSE;
}
CWLog("**Invio a WTP %d frame interno 802.11**", tmpNode->index);
CWLog("FrameControl: %02x", dataFrameFromDS.frameControl);
CWLog("DA: %02x: --- :%02x: --", (int) dataFrameFromDS.DA[0], (int) dataFrameFromDS.DA[4]);
CWLog("SA: %02x: --- :%02x: --", (int) dataFrameFromDS.SA[0], (int) dataFrameFromDS.SA[4]);
CWLog("BSSID: %02x: --- :%02x: --", (int) dataFrameFromDS.BSSID[0], (int) dataFrameFromDS.BSSID[4]);
*/
memcpy(msgFrame->msg, dataFrameBuffer, msglen);
msgFrame->offset=msglen;
msgFrame->data_msgType = CW_IEEE_802_11_FRAME_TYPE;
// CWLog("STA trovata[%02x:%02x:%02x:%02x:%02x:%02x]", (int) dataFrame.DA[0], (int) dataFrame.DA[1], (int) dataFrame.DA[2], (int) dataFrame.DA[3], (int) dataFrame.DA[4], (int) dataFrame.DA[5]);
if (!CWAssembleDataMessage(&completeMsgPtr, &fragmentsNum, gWTPs[tmpNode->index].pathMTU, msgFrame, NULL,
#ifdef CW_DTLS_DATA_CHANNEL
CW_PACKET_CRYPT,
#else
CW_PACKET_PLAIN,
#endif
0))
{
for(k = 0; k < fragmentsNum; k++){
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
CW_FREE_PROTOCOL_MESSAGE(*msgFrame);
CW_FREE_OBJECT(msgFrame);
}
#ifndef CW_DTLS_DATA_CHANNEL
for(i = 0; i < gACSocket.count; i++) {
if (gACSocket.interfaces[i].sock == gWTPs[tmpNode->index].socket){
dataSocket = gACSocket.interfaces[i].dataSock;
CW_COPY_NET_ADDR_PTR(&address,&(gWTPs[tmpNode->index].dataaddress));
break;
}
}
if (dataSocket == 0){
CWLog("data socket of WTP %d isn't ready.");
return CW_FALSE;
}
#endif
for(i = 0; i < fragmentsNum; i++) {
#ifdef CW_DTLS_DATA_CHANNEL
if(!(CWSecuritySend(gWTPs[tmpNode->index].sessionData, completeMsgPtr[i].msg, completeMsgPtr[i].offset)))
#else
if(!CWNetworkSendUnsafeUnconnected(dataSocket, &(address), completeMsgPtr[i].msg, completeMsgPtr[i].offset))
#endif
{
CWLog("Failure sending KeepAlive Request");
int k;
for(k = 0; k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
break;
}
}
// CWLog("Inviato Frame 80211 a WTP %d su socket dati: %d", tmpNode->index, dataSocket);
int k;
for(k = 0; messages && k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
tmpNode=NULL;
}
}
return CW_TRUE;
}
#endif
if(WLAN_FC_GET_TYPE(frameControl) == WLAN_FC_TYPE_MGMT)
{
int subtype = (int) WLAN_FC_GET_STYPE(frameControl);
CWLog("CW80211: Management Frame Received. Subtype: %d", subtype);
#ifdef SPLIT_MAC
/*
* In SplitMAC mode, WTP forward probe request to AC for optional decision.
* For now, there isn't an AC logic, so I'll log this event only
*/
if(subtype == WLAN_FC_STYPE_PROBE_REQ)
{
CWLog("CW80211: Management Probe request received");
//Do some stuff with AC logic...
}
/*
* In SplitMAC mode AC is responsible for auth response to client
*/
if(subtype == WLAN_FC_STYPE_AUTH)
{
CWLog("CW80211: Management Auth request received");
struct CWFrameAuthRequest authRequest;
if(!CW80211ParseAuthRequest(msgPtr->msg, &authRequest))
return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL);
frameResponse = CW80211AssembleAuthResponse(authRequest.DA, &authRequest, &frameRespLen);
CW_CREATE_OBJECT_ERR(msgFrame, CWProtocolMessage, { return CW_FALSE; });
CW_CREATE_PROTOCOL_MESSAGE(*msgFrame, frameRespLen, { return CW_FALSE; });
memcpy(msgFrame->msg, frameResponse, frameRespLen);
msgFrame->offset=frameRespLen;
msgFrame->data_msgType = CW_IEEE_802_11_FRAME_TYPE;
if (!CWAssembleDataMessage(&completeMsgPtr, &fragmentsNum, gWTPs[WTPIndex].pathMTU, msgFrame, NULL,
#ifdef CW_DTLS_DATA_CHANNEL
CW_PACKET_CRYPT,
#else
CW_PACKET_PLAIN,
#endif
0)){
for(k = 0; k < fragmentsNum; k++){
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
CW_FREE_PROTOCOL_MESSAGE(*msgFrame);
CW_FREE_OBJECT(msgFrame);
}
#ifndef CW_DTLS_DATA_CHANNEL
for(i = 0; i < gACSocket.count; i++) {
if (gACSocket.interfaces[i].sock == gWTPs[WTPIndex].socket){
dataSocket = gACSocket.interfaces[i].dataSock;
CW_COPY_NET_ADDR_PTR(&address,&(gWTPs[WTPIndex].dataaddress));
break;
}
}
if (dataSocket == 0){
CWLog("data socket of WTP %d isn't ready.");
return CW_FALSE;
}
#endif
for(i = 0; i < fragmentsNum; i++) {
#ifdef CW_DTLS_DATA_CHANNEL
if(!(CWSecuritySend(gWTPs[WTPIndex].sessionData, completeMsgPtr[i].msg, completeMsgPtr[i].offset)))
#else
if(!CWNetworkSendUnsafeUnconnected(dataSocket, &(address), completeMsgPtr[i].msg, completeMsgPtr[i].offset))
#endif
{
CWLog("Failure sending KeepAlive Request");
int k;
for(k = 0; k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
break;
}
}
CWLog("Inviato Frame 80211 a WTP");
int k;
for(k = 0; messages && k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
}
#endif
if(subtype == WLAN_FC_STYPE_ASSOC_REQ || subtype == WLAN_FC_STYPE_REASSOC_REQ)
{
CWLog("CW80211: Management Association request received");
#ifdef SPLIT_MAC
/* In caso di SPLIT MAC, se AC riceve AssReq deve prima generare AssResp ed inviarlo al WTP.. */
struct CWFrameAssociationRequest assRequest;
if(!CW80211ParseAssociationRequest(msgPtr->msg, &assRequest))
return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL);
if(assRequest.BSSID == NULL || assRequest.DA == NULL || assRequest.SA == NULL)
return CW_FALSE;
int indexRadio=0, indexWlan=0, stop=0;
for(indexRadio=0; indexRadio<gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radioCount; indexRadio++)
{
for(indexWlan=0; indexWlan<WTP_MAX_INTERFACES; indexWlan++)
{
/*
CWLog("Ricerca BSSID %02x:%02x:%02x:%02x:%02x:%02x radio[%d] wlan[%d]", (int)assRequest.BSSID[0],
(int)assRequest.BSSID[1],
(int)assRequest.BSSID[2],
(int)assRequest.BSSID[3],
(int)assRequest.BSSID[4],
(int)assRequest.BSSID[5],
indexRadio, indexWlan);
CWLog("Esamino radio %d wlan %d: tipoInterfaccia: %d, BSSID:%02x:%02x:%02x:%02x:%02x:%02x",
indexRadio, indexWlan,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].typeInterface,
(int)gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID[0],
(int)gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID[1],
(int)gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID[2],
(int)gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID[3],
(int)gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID[4],
(int)gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID[5]
);
*/
if(
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].typeInterface == CW_AP_MODE &&
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID!=NULL &&
strncmp(gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID, assRequest.BSSID, ETH_ALEN) == 0
)
{
stop++;
break;
}
}
if(stop == 1)
break;
}
if(stop == 0)
return CW_TRUE;
CW_CREATE_ARRAY_CALLOC_ERR(gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].MACaddr, ETH_ALEN, char, return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL););
CW_COPY_MEMORY(gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].MACaddr, assRequest.DA, ETH_ALEN);
short int staAID;
CW80211SetAssociationID(&staAID);
if(WLAN_FC_GET_STYPE(frameControl) == WLAN_FC_STYPE_ASSOC_REQ)
frameResponse = CW80211AssembleAssociationResponseAC(gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].MACaddr,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].capabilityBit,
staAID,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.supportedRates,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.lenSupportedRates,
&(assRequest), &(frameRespLen));
if(WLAN_FC_GET_STYPE(frameControl) == WLAN_FC_STYPE_REASSOC_REQ)
frameResponse = CW80211AssembleReassociationResponseAC(gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].MACaddr,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].capabilityBit,
staAID,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.supportedRates,
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.lenSupportedRates,
&(assRequest), &(frameRespLen));
if(frameResponse == NULL)
{
CWLog("Nessun frame di risposta. Esco");
return CW_TRUE;
}
CW_CREATE_OBJECT_ERR(msgFrame, CWProtocolMessage, { return CW_FALSE;} );
CW_CREATE_PROTOCOL_MESSAGE(*msgFrame, frameRespLen, { return CW_FALSE;} );
memcpy(msgFrame->msg, frameResponse, frameRespLen);
msgFrame->offset=frameRespLen;
msgFrame->data_msgType = CW_IEEE_802_11_FRAME_TYPE;
if (!CWAssembleDataMessage(&completeMsgPtr, &fragmentsNum, gWTPs[WTPIndex].pathMTU, msgFrame, NULL,
#ifdef CW_DTLS_DATA_CHANNEL
CW_PACKET_CRYPT,
#else
CW_PACKET_PLAIN,
#endif
0)){
for(k = 0; k < fragmentsNum; k++){
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
CW_FREE_PROTOCOL_MESSAGE(*msgFrame);
CW_FREE_OBJECT(msgFrame);
}
#ifndef CW_DTLS_DATA_CHANNEL
for(i = 0; i < gACSocket.count; i++) {
if (gACSocket.interfaces[i].sock == gWTPs[WTPIndex].socket){
dataSocket = gACSocket.interfaces[i].dataSock;
CW_COPY_NET_ADDR_PTR(&address,&(gWTPs[WTPIndex].dataaddress));
break;
}
}
if (dataSocket == 0){
CWLog("data socket of WTP %d isn't ready.");
return CW_FALSE;
}
#endif
for(i = 0; i < fragmentsNum; i++) {
#ifdef CW_DTLS_DATA_CHANNEL
if(!(CWSecuritySend(gWTPs[WTPIndex].sessionData, completeMsgPtr[i].msg, completeMsgPtr[i].offset)))
#else
if(!CWNetworkSendUnsafeUnconnected(dataSocket, &(address), completeMsgPtr[i].msg, completeMsgPtr[i].offset))
#endif
{
CWLog("Failure sending KeepAlive Request");
int k;
for(k = 0; k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
break;
}
}
CWLog("Inviato Frame 80211 a WTP");
int k;
for(k = 0; messages && k < fragmentsNum; k++) {
CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]);
}
CW_FREE_OBJECT(completeMsgPtr);
CWFrameAssociationResponse assocResponse;
if(!CW80211ParseAssociationResponse(frameResponse, &(assocResponse)))
return CW_FALSE;
nodeAVL * tmpNodeSta=NULL;
CWBool toSendEventRequestDelete=CW_FALSE;
/* ... e poi inviare il Station Request ed inviarlo */
int seqNum = CWGetSeqNum();
//Send a Station Configuration Request
if (CWAssembleStationConfigurationRequest(&(gWTPs[WTPIndex].messages),
&(gWTPs[WTPIndex].messagesCount),
gWTPs[WTPIndex].pathMTU,
seqNum, assocResponse, WTPIndex,
CW_MSG_ELEMENT_ADD_STATION_CW_TYPE)) {
if(CWACSendAcknowledgedPacket(WTPIndex,
CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE,
seqNum))
{
//---- Elena : Insert new AVL node
CWThreadMutexLock(&mutexAvlTree);
//Se la STA era gia registrata ma con un altro radioID o WTPIndex, AC elimina dal suo AVL
// e manda subito un event request
tmpNodeSta = AVLfind(assocResponse.DA, avlTree);
if(tmpNodeSta != NULL)
{
if(
tmpNodeSta->radioID != gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID ||
tmpNodeSta->index != WTPIndex
)
{
toSendEventRequestDelete=CW_TRUE;
avlTree = AVLdeleteNode(avlTree, assocResponse.DA, gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID);
avlTree = AVLinsert(WTPIndex, assocResponse.DA, assocResponse.BSSID, gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID, avlTree);
}
//Qui non faccio insert se la STA era gia presente in AVl e
//WTPIndex e radioID coincidono
}
else
avlTree = AVLinsert(WTPIndex, assocResponse.DA, assocResponse.BSSID, gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID, avlTree);
CWThreadMutexUnlock(&mutexAvlTree);
//----
if(
tmpNodeSta != NULL &&
tmpNodeSta->staAddr != NULL &&
tmpNodeSta->BSSID != NULL &&
toSendEventRequestDelete == CW_TRUE
)
{
CWFrameAssociationResponse assocResponseFake;
CW_COPY_MEMORY(assocResponseFake.DA, tmpNodeSta->staAddr, ETH_ALEN);
CW_COPY_MEMORY(assocResponseFake.BSSID, tmpNodeSta->BSSID, ETH_ALEN);
//Send a Station Configuration Request DELETE STA
if (CWAssembleStationConfigurationRequest(&(gWTPs[tmpNodeSta->index].messages),
&(gWTPs[tmpNodeSta->index].messagesCount),
gWTPs[tmpNodeSta->index].pathMTU,
seqNum, assocResponse, tmpNodeSta->index,
CW_MSG_ELEMENT_DELETE_STATION_CW_TYPE)) {
if(CWACSendAcknowledgedPacket(tmpNodeSta->index,
CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE,
seqNum))
CWLog("AC send Station Request Message to WTP[%d] to delete STA[%02x:%02x:%02x:%02x:%02x:%02x] radioID[%d]", tmpNodeSta->index, (int)tmpNodeSta->staAddr[0], (int)tmpNodeSta->staAddr[1], (int)tmpNodeSta->staAddr[2], (int)tmpNodeSta->staAddr[3], (int)tmpNodeSta->staAddr[4], (int)tmpNodeSta->staAddr[5], tmpNodeSta->radioID);
else
{
CWLog("AC couldn't send Station Request Message to WTP[%d] to delete STA[%02x:%02x:%02x:%02x:%02x:%02x] radioID[%d]", tmpNodeSta->index, (int)tmpNodeSta->staAddr[0], (int)tmpNodeSta->staAddr[1], (int)tmpNodeSta->staAddr[2], (int)tmpNodeSta->staAddr[3], (int)tmpNodeSta->staAddr[4], (int)tmpNodeSta->staAddr[5], tmpNodeSta->radioID);
CWACStopRetransmission(tmpNodeSta->index);
}
}
return CW_TRUE;
}
}
else
CWACStopRetransmission(WTPIndex);
}
#endif
}
#ifndef SPLIT_MAC
struct timeval tval_before, tval_after, tval_result;
/* In caso di LOCAL MAC, AC riceve anche AssResp per poter inviare uno Station Configuration Request coerente */
if(subtype == WLAN_FC_STYPE_ASSOC_RESP)
{
gettimeofday(&tval_before, NULL);
CWLog("CW80211: Management Association response received");
CWFrameAssociationResponse assocResponse;
if(!CW80211ParseAssociationResponse(msgPtr->msg, &(assocResponse)))
return CW_FALSE;
/* ... e poi inviare il Station Request ed inviarlo */
int seqNum = CWGetSeqNum();
//Send a Station Configuration Request
if (CWAssembleStationConfigurationRequest(&(gWTPs[WTPIndex].messages),
&(gWTPs[WTPIndex].messagesCount),
gWTPs[WTPIndex].pathMTU,
seqNum, assocResponse, WTPIndex,
CW_MSG_ELEMENT_ADD_STATION_CW_TYPE)) {
if(CWACSendAcknowledgedPacket(WTPIndex,
CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE,
seqNum))
{
nodeAVL * tmpNodeSta=NULL;
CWBool toSendEventRequestDelete=CW_FALSE;
int indexRadio=0, indexWlan=0, stop=0;
for(indexRadio=0; indexRadio<gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radioCount; indexRadio++)
{
for(indexWlan=0; indexWlan<WTP_MAX_INTERFACES; indexWlan++)
{
if(
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].typeInterface == CW_AP_MODE &&
gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID!=NULL &&
strncmp(gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.interfaces[indexWlan].BSSID, assocResponse.BSSID, ETH_ALEN) == 0
)
{
stop++;
break;
}
}
if(stop == 1)
break;
}
//---- Elena : Insert new AVL node
CWThreadMutexLock(&mutexAvlTree);
//Se la STA era gia registrata ma con un altro radioID o WTPIndex, AC elimina dal suo AVL
// e manda subito un event request
tmpNodeSta = AVLfind(assocResponse.DA, avlTree);
if(tmpNodeSta != NULL)
{
if(
tmpNodeSta->radioID != gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID ||
tmpNodeSta->index != WTPIndex
)
{
toSendEventRequestDelete=CW_TRUE;
avlTree = AVLdeleteNode(avlTree, assocResponse.DA, gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID);
avlTree = AVLinsert(WTPIndex, assocResponse.DA, assocResponse.BSSID, gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID, avlTree);
}
//Qui non faccio insert se la STA era gia presente in AVl e
//WTPIndex e radioID coincidono
}
else
avlTree = AVLinsert(WTPIndex, assocResponse.DA, assocResponse.BSSID, gWTPs[WTPIndex].WTPProtocolManager.radiosInfo.radiosInfo[indexRadio].gWTPPhyInfo.radioID, avlTree);
CWThreadMutexUnlock(&mutexAvlTree);
//----
gettimeofday(&tval_after, NULL);
timersub(&tval_after, &tval_before, &tval_result);
CWLog("Association time elapsed: %ld.%06ld\n", (long int) tval_result.tv_sec, (long int) tval_result.tv_usec );
if(
tmpNodeSta != NULL &&
tmpNodeSta->staAddr != NULL &&
tmpNodeSta->BSSID != NULL &&
toSendEventRequestDelete == CW_TRUE
)
{
CWLog("Entro per handover");
gettimeofday(&tval_before, NULL);
CWFrameAssociationResponse assocResponseFake;
CW_COPY_MEMORY(assocResponseFake.DA, tmpNodeSta->staAddr, ETH_ALEN);
CW_COPY_MEMORY(assocResponseFake.BSSID, tmpNodeSta->BSSID, ETH_ALEN);
CWLog("Prima di assemble delete");
//Send a Station Configuration Request DELETE STA
if (CWAssembleStationConfigurationRequest(&(gWTPs[tmpNodeSta->index].messages),
&(gWTPs[tmpNodeSta->index].messagesCount),
gWTPs[tmpNodeSta->index].pathMTU,
seqNum, assocResponse, tmpNodeSta->index,
CW_MSG_ELEMENT_DELETE_STATION_CW_TYPE)) {
CWLog("Prima di CWACSendAcknowledgedPacket");
if(CWACSendAcknowledgedPacket(tmpNodeSta->index,
CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE,
seqNum))
CWLog("AC send Station Request Message to WTP[%d] to delete STA[%02x:%02x:%02x:%02x:%02x:%02x] radioID[%d]", tmpNodeSta->index, (int)tmpNodeSta->staAddr[0], (int)tmpNodeSta->staAddr[1], (int)tmpNodeSta->staAddr[2], (int)tmpNodeSta->staAddr[3], (int)tmpNodeSta->staAddr[4], (int)tmpNodeSta->staAddr[5], tmpNodeSta->radioID);
else
{
CWLog("AC couldn't send Station Request Message to WTP[%d] to delete STA[%02x:%02x:%02x:%02x:%02x:%02x] radioID[%d]", tmpNodeSta->index, (int)tmpNodeSta->staAddr[0], (int)tmpNodeSta->staAddr[1], (int)tmpNodeSta->staAddr[2], (int)tmpNodeSta->staAddr[3], (int)tmpNodeSta->staAddr[4], (int)tmpNodeSta->staAddr[5], tmpNodeSta->radioID);
CWACStopRetransmission(tmpNodeSta->index);
}
}
gettimeofday(&tval_after, NULL);
timersub(&tval_after, &tval_before, &tval_result);
CWLog("Handover time elapsed: %ld.%06ld\n", (long int) tval_result.tv_sec, (long int) tval_result.tv_usec );
return CW_TRUE;
}
}
else
CWACStopRetransmission(WTPIndex);
}
}
#endif
}
else
CWLog("Frame Unknown");
//flush_pcap(msgPtr->msg, msglen, "cap_wtp_to_ac.txt");
}
else{
CWDebugLog("Manage special data packets with frequency");
/************************************************************
* Update 2009: *
* Manage special data packets with frequency *
* statistics informations. *
************************************************************/
if( msgPtr->data_msgType == CW_DATA_MSG_FREQ_STATS_TYPE ) {
int cells; /* How many cell are heard */
int isAck;