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WTPRunState.c
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WTPRunState.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]) *
* Elena Agosini ([email protected]) *
************************************************************************************************/
#include <sys/socket.h>
#include <sys/types.h>
#include <linux/if_ether.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <netpacket/packet.h>
#include "CWWTP.h"
#include "CWVendorPayloads.h"
#include "common.h"
#include "ieee802_11_defs.h"
#ifdef DMALLOC
#include "../dmalloc-5.5.0/dmalloc.h"
#endif
CWBool CWWTPManageGenericRunMessage(CWProtocolMessage *msgPtr);
CWBool CWWTPCheckForBindingFrame();
CWBool CWWTPCheckForWTPEventRequest(int eventType, CWMsgElemDataDeleteStation * infoDeleteStation);
CWBool CWParseWTPEventResponseMessage(char *msg,
int len,
int seqNum,
void *values);
CWBool CWSaveWTPEventResponseMessage(void *WTPEventResp);
CWBool CWAssembleEchoRequest(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU,
int seqNum,
CWList msgElemList);
CWBool CWParseConfigurationUpdateRequest (char *msg,
int len,
CWProtocolConfigurationUpdateRequestValues *valuesPtr,
int *updateRequestType);
CWBool CWSaveConfigurationUpdateRequest(CWProtocolConfigurationUpdateRequestValues *valuesPtr,
CWProtocolResultCode* resultCode,
int *updateRequestType);
CWBool CWAssembleConfigurationUpdateResponse(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU,
int seqNum,
CWProtocolResultCode resultCode,
CWProtocolConfigurationUpdateRequestValues values);
CWBool CWSaveClearConfigurationRequest(CWProtocolResultCode* resultCode);
CWBool CWAssembleClearConfigurationResponse(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU,
int seqNum,
CWProtocolResultCode resultCode);
CWBool CWAssembleStationConfigurationResponse(CWProtocolMessage **messagesPtr,
int *fragmentsNumPtr,
int PMTU,
int seqNum,
CWProtocolResultCode resultCode);
CWBool CWParseStationConfigurationRequest (char *msg, int len, int * BSSIndex, int * STAIndex, int * typeOp);
void CWConfirmRunStateToACWithEchoRequest();
void CWWTPKeepAliveDataTimerExpiredHandler(void *arg);
CWTimerID gCWHeartBeatTimerID;
CWTimerID gCWEchoRequestTimerID;
CWTimerID gCWKeepAliveTimerID;
CWTimerID gCWNeighborDeadTimerID;
/*
* Elena Agostini - 03/2014: DataChannel Dead Timer
*/
CWTimerID gCWDataChannelDeadTimerID;
CWBool gDataChannelDeadTimerSet=CW_FALSE;
int gDataChannelDeadInterval = CW_DATACHANNELDEAD_INTERVAL_DEFAULT;
CWBool gWTPDataChannelDeadFlag = CW_FALSE;
int gWTPThreadDataPacketState = 0;
/*
* Elena Agostini - 03/2014: Echo Retransmission Count
*/
int gWTPEchoRetransmissionCount=0;
int gWTPMaxRetransmitEcho=CW_ECHO_MAX_RETRANSMIT_DEFAULT;
CWBool gWTPExitRunEcho=CW_FALSE;
CWBool gNeighborDeadTimerSet=CW_FALSE;
int gEchoInterval = CW_ECHO_INTERVAL_DEFAULT;
int gDataChannelKeepAlive = CW_DATA_CHANNEL_KEEP_ALIVE_DEFAULT;
CWBool gEchoTimerSet=CW_FALSE;
/*
* Manage DTLS packets.
*/
CW_THREAD_RETURN_TYPE CWWTPReceiveDtlsPacket(void *arg) {
int readBytes;
char buf[CW_BUFFER_SIZE];
CWSocket sockDTLS = (CWSocket)arg;
CWNetworkLev4Address addr;
char* pData;
CWBool gWTPDataChannelLocalFlag=CW_FALSE, gWTPExitRunEchoLocal=CW_FALSE;
CWLog("THREAD Receiver Control channel start");
CW_REPEAT_FOREVER
{
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelLocalFlag = gWTPDataChannelDeadFlag;
gWTPExitRunEchoLocal=gWTPExitRunEcho;
CWThreadMutexUnlock(&gInterfaceMutex);
if(gWTPDataChannelLocalFlag == CW_TRUE)
{
CWLog("Data Channel is dead... so receiver Control Packet must die!");
break;
}
if(gWTPExitRunEchoLocal == CW_TRUE)
{
CWLog("Control Channel is dead... so receiver Control Packet must die!");
break;
}
if(!CWErr(CWNetworkReceiveUnsafe(sockDTLS,
buf,
CW_BUFFER_SIZE - 1,
0,
&addr,
&readBytes))) {
if (CWErrorGetLastErrorCode() == CW_ERROR_INTERRUPTED)
continue;
break;
}
/* Clone data packet */
CW_CREATE_OBJECT_SIZE_ERR(pData, readBytes, { CWLog("Out Of Memory"); return NULL; });
memcpy(pData, buf, readBytes);
CWLockSafeList(gPacketReceiveList);
CWAddElementToSafeListTailwitDataFlag(gPacketReceiveList, pData, readBytes,CW_FALSE);
CWUnlockSafeList(gPacketReceiveList);
}
CWLog("THREAD Receiver Control channel exit");
/*
* If there is a channel error, manager threads stop without the use of this flag *
CWThreadMutexLock(&gInterfaceMutex);
gWTPExitRunEcho=CW_TRUE;
CWThreadMutexUnlock(&gInterfaceMutex);
*/
CWNetworkCloseSocket(sockDTLS);
return NULL;
}
extern int gRawSock;
/*
* Manage data packets.
*/
#define HLEN_80211 24
CW_THREAD_RETURN_TYPE CWWTPReceiveDataPacket(void *arg) {
int n,readBytes;
char buf[CW_BUFFER_SIZE];
struct sockaddr_ll rawSockaddr;
CWSocket sockDTLS = (CWSocket)arg;
CWNetworkLev4Address addr;
char* pData;
CWBool gWTPDataChannelLocalFlag=CW_FALSE, gWTPExitRunEchoLocal=CW_FALSE;
CWLog("THREAD Receiver Data channel start on socket %d", sockDTLS);
CW_REPEAT_FOREVER
{
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelLocalFlag = gWTPDataChannelDeadFlag;
gWTPExitRunEchoLocal=gWTPExitRunEcho;
CWThreadMutexUnlock(&gInterfaceMutex);
if(gWTPDataChannelLocalFlag == CW_TRUE)
{
CWLog("Data Channel is dead... so receiver Data Packet must die!");
goto manager_data_failure;
}
if(gWTPExitRunEchoLocal == CW_TRUE)
{
CWLog("Control Channel is dead... so receiver Data Packet must die!");
goto manager_data_failure;
}
if(!CWErr(CWNetworkReceiveUnsafe(sockDTLS,
buf,
CW_BUFFER_SIZE - 1,
0,
&addr,
&readBytes))) {
if (CWErrorGetLastErrorCode() == CW_ERROR_INTERRUPTED)
continue;
CWLog("CWErrorGetLastErrorCode(): %d",CWErrorGetLastErrorCode());
break;
}
/* Clone data packet */
CW_CREATE_OBJECT_SIZE_ERR(pData, readBytes, { CWLog("Out Of Memory"); return NULL; });
memcpy(pData, buf, readBytes);
CWLockSafeList(gPacketReceiveDataList);
CWAddElementToSafeListTailwitDataFlag(gPacketReceiveDataList, pData, readBytes, CW_TRUE);
CWUnlockSafeList(gPacketReceiveDataList);
}
/*
* If there is a channel error, manager threads stop without the use of this flag *
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelDeadFlag=CW_TRUE;
CWThreadMutexUnlock(&gInterfaceMutex);
*/
manager_data_failure:
CWLog("THREAD Receiver Data channel exit");
CWNetworkCloseSocket(sockDTLS);
return NULL;
}
/*
* Elena Agostini - 03/2014: Manage RUN State WTPDataChannel + DTLS Data Channel
*/
CW_THREAD_RETURN_TYPE CWWTPManageDataPacket(void *arg) {
int n,readBytes;
struct sockaddr_ll rawSockaddr;
CWProtocolMessage msgPtr;
CWBool gWTPDataChannelLocalFlag = CW_FALSE;
CWBool gWTPExitRunEchoLocal = CW_FALSE;
int msg_len;
int gWTPThreadDataPacketStateLocal=0;
CWBool bReceivePacket;
CWLog("THREAD Manager Data channel start");
/* Elena Agostini - 07/2014: data packet thread alive flag */
CWThreadMutexLock(&gInterfaceMutex);
gWTPThreadDataPacketState = 1;
CWThreadMutexUnlock(&gInterfaceMutex);
#ifdef CW_DTLS_DATA_CHANNEL
struct sockaddr_in *tmpAdd = (struct sockaddr_in *) &(gACInfoPtr->preferredAddress);
CWNetworkLev4Address * gACAddressDataChannel = (CWNetworkLev4Address *)tmpAdd;
tmpAdd->sin_port = htons(5247);
CWLog("[DTLS] Start Data Session with AC %s:%d", inet_ntoa(tmpAdd->sin_addr), ntohs(tmpAdd->sin_port));
if(!CWErr(CWSecurityInitSessionClient(gWTPDataSocket,
gACAddressDataChannel,
gPacketReceiveDataList,
gWTPSecurityContext,
&gWTPSessionData,
&gWTPPathMTU))) {
//Elena Agostini - 07/2014
goto CLEAR_DATA_RUN_STATE;
}
#endif
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelDeadFlag=CW_FALSE;
CWThreadMutexUnlock(&gInterfaceMutex);
CWWTPKeepAliveDataTimerExpiredHandler(NULL);
CW_REPEAT_FOREVER
{
/*
* Flag DataChannel & ControlChannel Dead
*/
bReceivePacket = CW_FALSE;
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelLocalFlag = gWTPDataChannelDeadFlag;
gWTPExitRunEchoLocal=gWTPExitRunEcho;
gWTPThreadDataPacketStateLocal=gWTPThreadDataPacketState;
CWThreadMutexUnlock(&gInterfaceMutex);
if(gWTPDataChannelLocalFlag == CW_TRUE)
{
CWLog("Data Channel is dead.. Thread CWWTPManageDataPacket exit");
break;
}
if(gWTPExitRunEchoLocal == CW_TRUE)
{
CWLog("Control Channel is dead.. Thread CWWTPManageDataPacket exit");
break;
}
if(gWTPThreadDataPacketStateLocal == 2)
{
CWLog("Data Packet Thread must die.. Thread CWWTPManageDataPacket exit");
break;
}
msgPtr.msg = NULL;
msgPtr.offset = 0;
CWThreadMutexLock(&gInterfaceMutex);
bReceivePacket = ((CWGetCountElementFromSafeList(gPacketReceiveDataList) != 0) ? CW_TRUE : CW_FALSE);
CWThreadMutexUnlock(&gInterfaceMutex);
if (bReceivePacket) {
/* Elena Agostini - 03/2014: DTLS Data Session WTP */
if(!CWReceiveDataMessage(&msgPtr))
{
CW_FREE_PROTOCOL_MESSAGE(msgPtr);
CWLog("Failure Receiving Data Message");
break;
//continue;
}
if (msgPtr.data_msgType == CW_DATA_MSG_KEEP_ALIVE_TYPE) {
char *valPtr=NULL;
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
msgPtr.offset=0;
CWParseFormatMsgElem(&msgPtr, &elemType, &elemLen);
valPtr = CWParseSessionID(&msgPtr, 16);
/*
* Elena Agostini - 03/2014
* Reset DataChannel Dead Timer
*/
if (!CWResetDataChannelDeadTimer()) {
CW_FREE_PROTOCOL_MESSAGE(msgPtr);
break;
}
}else if (msgPtr.data_msgType == CW_IEEE_802_3_FRAME_TYPE) {
CWDebugLog("DATA Frame 802.3 (%d bytes) received from AC",msgPtr.offset);
/*MAC - begin*/
rawSockaddr.sll_addr[0] = msgPtr.msg[0];
rawSockaddr.sll_addr[1] = msgPtr.msg[1];
rawSockaddr.sll_addr[2] = msgPtr.msg[2];
rawSockaddr.sll_addr[3] = msgPtr.msg[3];
rawSockaddr.sll_addr[4] = msgPtr.msg[4];
rawSockaddr.sll_addr[5] = msgPtr.msg[5];
/*MAC - end*/
rawSockaddr.sll_addr[6] = 0x00;/*not used*/
rawSockaddr.sll_addr[7] = 0x00;/*not used*/
rawSockaddr.sll_hatype = htons(msgPtr.msg[12]<<8 | msgPtr.msg[13]);
struct sockaddr_ll addr;
int gRawSockLocal;
if ((gRawSockLocal=socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)))<0) {
CWDebugLog("THR FRAME: Error creating socket");
CWExitThread();
}
memset(&addr, 0, sizeof(addr));
addr.sll_family = AF_PACKET;
// addr.sll_protocol = htons(ETH_P_ALL);
// addr.sll_pkttype = PACKET_HOST;
addr.sll_ifindex = if_nametoindex("monitor0"); //if_nametoindex(gRadioInterfaceName_0);
if ((bind(gRawSockLocal, (struct sockaddr*)&addr, sizeof(addr)))<0) {
CWDebugLog("THR FRAME: Error binding socket");
CWExitThread();
}
n = sendto(gRawSockLocal,msgPtr.msg ,msgPtr.offset,0,(struct sockaddr*)&rawSockaddr, sizeof(rawSockaddr));
}else if(msgPtr.data_msgType == CW_IEEE_802_11_FRAME_TYPE) {
#ifdef SPLIT_MAC
int offsetFrameReceived;
short int frameControl;
char * frameResponse=NULL;
u64 cookie_out;
if(!CW80211ParseFrameIEControl(msgPtr.msg, &(offsetFrameReceived), &(frameControl)))
return NULL;
if( WLAN_FC_GET_TYPE(frameControl) == WLAN_FC_TYPE_DATA ){
unsigned char buffer[CW_BUFFER_SIZE];
unsigned char buf80211[CW_BUFFER_SIZE];
unsigned char staAddr[ETH_ALEN];
struct ieee80211_radiotap_header * radiotapHeader;
int frameRespLen=0;
struct CWFrameDataHdr dataFrame;
int tmpOffset;
struct ifreq ethreq;
WTPSTAInfo * thisSTA;
int offsetFrameReceived;
int indexBSS;
if(rawInjectSocket < 0)
{
CWLog("ERROR INJECT SOCKET. You must restart WTP");
return CW_FALSE;
}
if(!CW80211ParseDataFrameFromDS(msgPtr.msg, &(dataFrame)))
{
CWLog("CW80211: Error parsing data frame");
return CW_FALSE;
}
/* CWLog("*** Ricevuto Data Frame da AC ***");
CWLog("FrameControl: %02x", dataFrame.frameControl);
CWLog("DA: %02x: --- :%02x: --", (int) dataFrame.DA[0], (int) dataFrame.DA[4]);
CWLog("SA: %02x: --- :%02x: --", (int) dataFrame.SA[0], (int) dataFrame.SA[4]);
CWLog("BSSID: %02x: --- :%02x: --", (int) dataFrame.BSSID[0], (int) dataFrame.BSSID[4]);
*/
if(checkAddressBroadcast(dataFrame.DA))
{
// CWLog("Broadcast destination");
CWInjectFrameMonitor(rawInjectSocket, msgPtr.msg, msgPtr.offset, 0, 0);
}
else
{
nodeAVL *tmpNodeSta=NULL;
//---- Search AVL node
CWThreadMutexLock(&mutexAvlTree);
tmpNodeSta = AVLfind(dataFrame.DA, avlTree);
//AVLdisplay_avl(avlTree);
CWThreadMutexUnlock(&mutexAvlTree);
if(tmpNodeSta == NULL)
CWPrintEthernetAddress(dataFrame.DA, "Destination STA not associated. Ignored");
else
{
//NB. Controllo anche il BSSID?
// CWLog("STA trovata [%02x:%02x:%02x:%02x:%02x:%02x] destinataria.", (int) tmpNodeSta->staAddr[0], (int) tmpNodeSta->staAddr[1], (int) tmpNodeSta->staAddr[2], (int) tmpNodeSta->staAddr[3], (int) tmpNodeSta->staAddr[4], (int) tmpNodeSta->staAddr[5]);
CWInjectFrameMonitor(rawInjectSocket, msgPtr.msg, msgPtr.offset, 0, 0);
}
//----
}
}
if(WLAN_FC_GET_STYPE(frameControl) == WLAN_FC_STYPE_AUTH)
{
CWLog("Received From AC Authentication Response");
struct CWFrameAuthResponse authResponse;
if(!CW80211ParseAuthResponse(msgPtr.msg, &authResponse))
{
CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL);
return NULL;
}
int radioIndex = 0, wlanIndex = 0, BSSIndex=0, trovato=0;
for(radioIndex=0; radioIndex<WTP_RADIO_MAX; radioIndex++)
{
for(wlanIndex=0; wlanIndex<WTP_MAX_INTERFACES; wlanIndex++)
{
BSSIndex=getBSSIndex(radioIndex, wlanIndex);
if(
(WTPGlobalBSSList[BSSIndex]->interfaceInfo->BSSID != NULL) &&
(!strcmp(WTPGlobalBSSList[BSSIndex]->interfaceInfo->BSSID, authResponse.BSSID))
)
{
trovato=1;
break;
}
}
if(trovato == 1)
break;
}
if(trovato == 1)
{
if(!CW80211SendFrame(WTPGlobalBSSList[BSSIndex], 0, CW_FALSE, msgPtr.msg, MGMT_FRAME_FIXED_LEN_AUTH, &(cookie_out), 1,1))
CWLog("NL80211: Errore CW80211SendFrame");
WTPSTAInfo * thisSTA = findSTABySA(WTPGlobalBSSList[BSSIndex], authResponse.DA);
if(!CWStartAssociationRequestTimer(thisSTA, WTPGlobalBSSList[BSSIndex]))
CWLog("[CW80211] Problem starting timer association request");
}
}
if(WLAN_FC_GET_STYPE(frameControl) == WLAN_FC_STYPE_ASSOC_RESP)
{
CWLog("Received from AC Association Response");
struct CWFrameAssociationResponse assResponse;
if(!CW80211ParseAssociationResponse(msgPtr.msg, &assResponse))
{
CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL);
return NULL;
}
int radioIndex = 0, wlanIndex = 0, BSSIndex=0, trovato=0;
for(radioIndex=0; radioIndex<WTP_RADIO_MAX; radioIndex++)
{
for(wlanIndex=0; wlanIndex<WTP_MAX_INTERFACES; wlanIndex++)
{
BSSIndex=getBSSIndex(radioIndex, wlanIndex);
if(
WTPGlobalBSSList[BSSIndex] &&
(WTPGlobalBSSList[BSSIndex]->interfaceInfo) &&
(WTPGlobalBSSList[BSSIndex]->interfaceInfo->BSSID != NULL) &&
(!strcmp(WTPGlobalBSSList[BSSIndex]->interfaceInfo->BSSID, assResponse.BSSID))
)
{
trovato=1;
break;
}
}
if(trovato == 1)
break;
}
//Ok o ricalcolo?
int lenFrame = MGMT_FRAME_FIXED_LEN_ASSOCIATION+MGMT_FRAME_IE_FIXED_LEN+CW_80211_MAX_SUPP_RATES;
if(trovato == 1)
if(!CW80211SendFrame(WTPGlobalBSSList[BSSIndex], 0, CW_FALSE, msgPtr.msg, lenFrame, &(cookie_out), 1,1))
CWLog("NL80211: Errore CW80211SendFrame");
}
#else
struct ieee80211_hdr *hdr;
u16 fc;
hdr = (struct ieee80211_hdr *) msgPtr.msg;
fc = le_to_host16(hdr->frame_control);
if( WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA ){
CWLog("Got 802.11 Data Packet (stype=%d) from AC(hostapd) len:%d",WLAN_FC_GET_STYPE(fc),msgPtr.offset);
//CWWTPSendFrame(msgPtr.msg, msgPtr.offset);
}
else{
CWLog("Control/Unknow Type type=%d",WLAN_FC_GET_TYPE(fc));
}
#endif
}else{
CWLog("Unknow Data Msg Type");
}
CW_FREE_PROTOCOL_MESSAGE(msgPtr);
}
}
CLEAR_DATA_RUN_STATE:
#ifdef CW_DTLS_DATA_CHANNEL
gWTPSessionData = NULL;
#endif
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelDeadFlag=CW_TRUE;
gWTPThreadDataPacketState = 2;
CWThreadMutexUnlock(&gInterfaceMutex);
CWLog("THREAD Data Management exit");
return NULL;
}
/*
* Manage Run State.
*/
extern int gRawSock;
int wtpInRunState=0;
CWStateTransition CWWTPEnterRun() {
int k, msg_len;
int gWTPThreadDataPacketStateLocal=0;
CWLog("\n");
CWLog("######### WTP enters in RUN State #########");
gWTPEchoRetransmissionCount=0;
CWThread thread_manageDataPacket;
if(!CWErr(CWCreateThread(&thread_manageDataPacket,
CWWTPManageDataPacket,
(void*)gWTPDataSocket))) {
CWLog("Error starting Thread that receive DTLS DATA packet");
CWNetworkCloseSocket(gWTPDataSocket);
//Elena Agostini - 07/2014
goto CLEAR_RUN_STATE;
}
for (k = 0; k < MAX_PENDING_REQUEST_MSGS; k++)
CWResetPendingMsgBox(gPendingRequestMsgs + k);
if (!CWErr(CWStartEchoRequestTimer())) {
goto CLEAR_RUN_STATE; //return CW_ENTER_RESET;
}
wtpInRunState=1;
CW_REPEAT_FOREVER
{
CWBool bReceivePacket = CW_FALSE;
CWBool bReveiveBinding = CW_FALSE;
CWBool gWTPDataChannelLocalFlag = CW_FALSE;
CWBool gWTPExitRunEchoLocal = CW_FALSE;
/*
* Elena Agostini - 03/2014
*
* If gWTPExitRunEcho == CW_TRUE, no Echo Response has been received
* so we consider peer dead and WTP goes in RESET
*
* If gWTPDataChannelDeadFlag == CW_TRUE DataChannel is Dead
*/
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelLocalFlag = gWTPDataChannelDeadFlag;
gWTPExitRunEchoLocal=gWTPExitRunEcho;
CWThreadMutexUnlock(&gInterfaceMutex);
if(gWTPDataChannelLocalFlag == CW_TRUE)
{
CWLog("Data Channel is dead... restart Discovery State\n");
break;
}
if(gWTPExitRunEchoLocal == CW_TRUE)
{
CWLog("Max Num Retransmit Echo Request reached. We consider peer dead..\n");
break;
}
/* Wait packet */
/*
timenow.tv_sec = time(0) + CW_NEIGHBORDEAD_RESTART_DISCOVERY_DELTA_DEFAULT; // greater than NeighborDeadInterval
timenow.tv_nsec = 0;
*/
/*
* if there are no frames from stations
* and no packets from AC...
*/
CWThreadMutexLock(&gInterfaceMutex);
/*
if ((CWGetCountElementFromSafeList(gPacketReceiveList) == 0) && (CWGetCountElementFromSafeList(gFrameList) == 0)) {
//...wait at most 4 mins for a frame or packet.
if (!CWErr(CWWaitThreadConditionTimeout(&gInterfaceWait, &gInterfaceMutex, &timenow))) {
CWThreadMutexUnlock(&gInterfaceMutex);
if (CWErrorGetLastErrorCode() == CW_ERROR_TIME_EXPIRED) {
CWLog("No Message from AC for a long time... restart Discovery State");
break;
}
continue;
}
}*/
bReceivePacket = ((CWGetCountElementFromSafeList(gPacketReceiveList) != 0) ? CW_TRUE : CW_FALSE);
bReveiveBinding = ((CWGetCountElementFromSafeList(gFrameList) != 0) ? CW_TRUE : CW_FALSE);
CWThreadMutexUnlock(&gInterfaceMutex);
if (bReceivePacket) {
CWProtocolMessage msg;
msg_len = msg.offset;
msg.msg = NULL;
msg.offset = 0;
if (!(CWReceiveMessage(&msg))) {
CW_FREE_PROTOCOL_MESSAGE(msg);
CWLog("Failure Receiving Response");
break;
}
if (!CWErr(CWWTPManageGenericRunMessage(&msg))) {
if(CWErrorGetLastErrorCode() == CW_ERROR_INVALID_FORMAT) {
/* Log and ignore message */
CWErrorHandleLast();
CWLog("--> Received something different from a valid Run Message");
}
else {
CW_FREE_PROTOCOL_MESSAGE(msg);
CWLog("--> Critical Error Managing Generic Run Message... we enter RESET State");
//wtpInRunState=0;
break;
//return CW_ENTER_RESET;
}
}
}
if (bReveiveBinding)
CWWTPCheckForBindingFrame();
}
/* Elena Agostini - 07/2014 */
CLEAR_RUN_STATE:
wtpInRunState=0;
CWStopEchoRequestsTimer();
CWStopKeepAliveTimer();
CWStopDataChannelDeadTimer();
/*
* Elena Agostini - 07/2014: waiting thread_manageDataPacket
*/
CWThreadMutexLock(&gInterfaceMutex);
if(gWTPThreadDataPacketState != 2)
gWTPThreadDataPacketState=2;
CWThreadMutexUnlock(&gInterfaceMutex);
pthread_join(thread_manageDataPacket, NULL);
CWLog("THREAD Manager Data Channel is dead");
#ifndef CW_NO_DTLS
CWSecurityDestroyContext(gWTPSecurityContext);
gWTPSecurityContext = NULL;
gWTPSession = NULL;
#endif
CWThreadMutexLock(&gInterfaceMutex);
gWTPDataChannelDeadFlag = CW_FALSE;
gWTPExitRunEcho = CW_FALSE;
gWTPThreadDataPacketState=0;
CWThreadMutexUnlock(&gInterfaceMutex);
return CW_ENTER_RESET;
}
CWBool CWWTPManageGenericRunMessage(CWProtocolMessage *msgPtr) {
CWControlHeaderValues controlVal;
if(msgPtr == NULL)
return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL);
msgPtr->offset = 0;
/* will be handled by the caller */
if(!(CWParseControlHeader(msgPtr, &controlVal)))
return CW_FALSE;
int len = controlVal.msgElemsLen - CW_CONTROL_HEADER_OFFSET_FOR_MSG_ELEMS;
int pendingMsgIndex = 0;
pendingMsgIndex = CWFindPendingRequestMsgsBox(gPendingRequestMsgs,
MAX_PENDING_REQUEST_MSGS,
controlVal.messageTypeValue,
controlVal.seqNum);
/* we have received a new Request or an Echo Response */
if (pendingMsgIndex < 0) {
CWProtocolMessage *messages = NULL;
int fragmentsNum=0;
CWBool toSend=CW_FALSE;
switch(controlVal.messageTypeValue) {
case CW_MSG_TYPE_VALUE_CONFIGURE_UPDATE_REQUEST:
{
CWProtocolResultCode resultCode = CW_PROTOCOL_FAILURE;
CWProtocolConfigurationUpdateRequestValues values;
int updateRequestType;
/*Update 2009:
check to see if a time-out on session occur...
In case it happens it should go back to CW_ENTER_RESET*/
if (!CWResetEchoRequestRetransmit()) {
CWFreeMessageFragments(messages, fragmentsNum);
CW_FREE_OBJECT(messages);
return CW_FALSE;
}
CWLog("Configuration Update Request received");
/************************************************************************************************
* Update 2009: *
* These two function need an additional parameter (Pointer to updateRequestType) *
* for distinguish between all types of message elements. *
************************************************************************************************/
if(!CWParseConfigurationUpdateRequest((msgPtr->msg)+(msgPtr->offset), len, &values, &updateRequestType))
return CW_FALSE;
if(!CWSaveConfigurationUpdateRequest(&values, &resultCode, &updateRequestType))
return CW_FALSE;
/*
if ( updateRequestType == BINDING_MSG_ELEMENT_TYPE_OFDM_CONTROL )
break;
*/
/*Update 2009:
Added values (to return stuff with a conf update response)*/
if(!CWAssembleConfigurationUpdateResponse(&messages,
&fragmentsNum,
gWTPPathMTU,
controlVal.seqNum,
resultCode,
values))
return CW_FALSE;
toSend=CW_TRUE;
/*
* BUG-ML01- memory leak fix
*
* 16/10/2009 - Donato Capitella
*/
/*
CWProtocolVendorSpecificValues* psValues = values.protocolValues;
if (psValues->vendorPayloadType == CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_UCI)
CW_FREE_OBJECT(((CWVendorUciValues *)psValues->payload)->response);
CW_FREE_OBJECT(psValues->payload);
CW_FREE_OBJECT(values.protocolValues);
*/
break;
break;
}
case CW_MSG_TYPE_VALUE_CLEAR_CONFIGURATION_REQUEST:
{
CWProtocolResultCode resultCode = CW_PROTOCOL_FAILURE;
/*Update 2009:
check to see if a time-out on session occur...
In case it happens it should go back to CW_ENTER_RESET*/
if (!CWResetEchoRequestRetransmit()) {
CWFreeMessageFragments(messages, fragmentsNum);
CW_FREE_OBJECT(messages);
return CW_FALSE;
}
CWLog("Clear Configuration Request received");
/*WTP RESET ITS CONFIGURAION TO MANUFACTURING DEFAULT}*/
if(!CWSaveClearConfigurationRequest(&resultCode))
return CW_FALSE;
if(!CWAssembleClearConfigurationResponse(&messages, &fragmentsNum, gWTPPathMTU, controlVal.seqNum, resultCode))
return CW_FALSE;
toSend=CW_TRUE;
break;
}
/*
* Elena Agostini 10/2014: Configuration Request Parse
*/
case CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_REQUEST:
{
int BSSIndex, STAIndex;
char * addressSta;
CW_CREATE_ARRAY_CALLOC_ERR(addressSta, ETH_ALEN+1, char, return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL););
CWProtocolResultCode resultCode = CW_PROTOCOL_SUCCESS;
//CWProtocolStationConfigurationRequestValues values; --> da implementare
/*Update 2009:
check to see if a time-out on session occur...
In case it happens it should go back to CW_ENTER_RESET*/
if (!CWResetEchoRequestRetransmit()) {
CWFreeMessageFragments(messages, fragmentsNum);
CW_FREE_OBJECT(messages);
return CW_FALSE;
}
CWLog("# _______ Station Configuration Request received _______ #");
int typeOp=-1;
if(CWParseStationConfigurationRequest((msgPtr->msg)+(msgPtr->offset), len, &BSSIndex, &STAIndex, &typeOp))
{
if(typeOp == CW_MSG_ELEMENT_ADD_STATION_CW_TYPE)
{
CWLog("[CW80211] REQUEST Add Station");
if(!CWWTPAddNewStation(BSSIndex, STAIndex))
resultCode=CW_PROTOCOL_FAILURE;
}
if(typeOp == CW_MSG_ELEMENT_DELETE_STATION_CW_TYPE)
{
CWLog("[CW80211] REQUEST Delete Station");
if(!CWWTPDelStation(WTPGlobalBSSList[BSSIndex], &(WTPGlobalBSSList[BSSIndex]->staList[STAIndex])))
resultCode=CW_PROTOCOL_FAILURE;
}
}
else
resultCode=CW_PROTOCOL_FAILURE;
if(!CWAssembleStationConfigurationResponse(&messages, &fragmentsNum, gWTPPathMTU, controlVal.seqNum, resultCode))
return CW_FALSE;
toSend=CW_TRUE;
break;
}
/*
* Elena Agostini: 09/2014. IEEE WLAN Configuration Request
*/
case CW_MSG_TYPE_VALUE_WLAN_CONFIGURATION_REQUEST:
{
CWProtocolResultCode resultCode = CW_PROTOCOL_FAILURE;
ACInterfaceRequestInfo interfaceACInfo;
int radioIDsend, wlanIDsend;
int radioIDindex, wlanIDindex;
char * bssidAssigned=NULL;
if (!CWResetEchoRequestRetransmit()) {
CWFreeMessageFragments(messages, fragmentsNum);
CW_FREE_OBJECT(messages);
return CW_FALSE;
}
CWLog("");
CWLog("# _______ WLAN Configuration Request received _______ #");
if(!(CWParseIEEEConfigurationRequestMessage(msgPtr->msg, len+(msgPtr->offset), controlVal.seqNum, &(interfaceACInfo))))
{
if(CWErrorGetLastErrorCode() != CW_ERROR_INVALID_FORMAT) {
CWLog("Failure Parsing Response");
resultCode = CW_PROTOCOL_FAILURE_UNRECOGNIZED_MSG_ELEM;
return CW_FALSE;
}
else {
CWErrorHandleLast();
}
return CW_FALSE;
}
radioIDsend = interfaceACInfo.radioID;
wlanIDsend = interfaceACInfo.wlanID;
radioIDindex = CWIEEEBindingGetIndexFromDevID(interfaceACInfo.radioID);
wlanIDindex = CWIEEEBindingGetIndexFromDevID(interfaceACInfo.wlanID);
if((CWSaveIEEEConfigurationRequestMessage(&(interfaceACInfo)))) {
resultCode = CW_PROTOCOL_SUCCESS;
if(interfaceACInfo.operation == CW_OP_ADD_WLAN)
{
if(
(wlanIDindex < WTP_MAX_INTERFACES) &&
(radioIDindex < WTP_RADIO_MAX)
)
{
CW_CREATE_ARRAY_CALLOC_ERR(bssidAssigned, ETH_ALEN+1, char, return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL););
CW_COPY_MEMORY(bssidAssigned, gRadiosInfo.radiosInfo[radioIDindex].gWTPPhyInfo.interfaces[wlanIDindex].BSSID, ETH_ALEN);
}
}
}