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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 (ludo@bluepixysw.com) *
* Del Moro Andrea (andrea_delmoro@libero.it) *
* Giovannini Federica (giovannini.federica@gmail.com) *
* Massimo Vellucci (m.vellucci@unicampus.it) *
* Mauro Bisson (mauro.bis@gmail.com) *
* Antonio Davoli (antonio.davoli@gmail.com) *
************************************************************************************************/
#include "CWAC.h"
#include "ACipcHostapd.h"
#include "CWVendorPayloads.h"
#include "CWFreqPayloads.h"
#include "WUM.h"
#include "common.h"
#include "ieee802_11_defs.h"
static CWBool CWACParseGenericRunMessage(int WTPIndex, CWProtocolMessage * msg, CWControlHeaderValues * controlVal);
static CWBool CWParseConfigurationUpdateResponseMessage(CWProtocolMessage *pm, int len,
CWProtocolResultCode * resultCode,
CWProtocolVendorSpecificValues ** protocolValues);
static CWBool CWSaveConfigurationUpdateResponseMessage(CWProtocolResultCode resultCode,
int WTPIndex, CWProtocolVendorSpecificValues * protocolValues);
static CWBool CWParseClearConfigurationResponseMessage(CWProtocolMessage *pm, int len, CWProtocolResultCode * resultCode);
static CWBool CWParseWLANConfigurationResponseMessage(CWProtocolMessage *pm, int len, CWProtocolResultCode * resultCode);
static CWBool CWParseStationConfigurationResponseMessage(CWProtocolMessage *pm,
int len, CWProtocolResultCode * resultCode);
static CWBool CWParseWTPDataTransferRequestMessage(CWProtocolMessage *pm,
int len, CWProtocolWTPDataTransferRequestValues * valuesPtr);
static CWBool CWAssembleWTPDataTransferResponse(CWTransportMessage *tm, int PMTU, int seqNum);
static CWBool CWParseWTPEventRequestMessage(CWProtocolMessage *pm, int len, CWProtocolWTPEventRequestValues * valuesPtr);
static CWBool CWSaveWTPEventRequestMessage(CWProtocolWTPEventRequestValues * WTPEventRequest,
CWWTPProtocolManager * WTPProtocolManager);
static CWBool CWAssembleWTPEventResponse(CWTransportMessage *tm, int PMTU, int seqNum);
static CWBool CWParseChangeStateEventRequestMessage2(CWProtocolMessage *pm,
int len, CWProtocolChangeStateEventRequestValues ** valuesPtr);
static CWBool CWParseEchoRequestMessage(CWProtocolMessage *pm, int len);
static CWBool CWAssembleEchoResponse(CWTransportMessage *tm, int PMTU, int seqNum);
static CWBool CWStartNeighborDeadTimer(int WTPIndex);
static CWBool CWStopNeighborDeadTimer(int WTPIndex);
static CWBool CWRestartNeighborDeadTimer(int WTPIndex);
#if 0
static CWBool CWRestartNeighborDeadTimerForEcho(int WTPIndex);
#endif
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;
}
#define HLEN_80211 24
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 *pm, CWBool dataFlag)
{
int i;
CWBool timerSet = CW_TRUE;
CWControlHeaderValues controlVal;
CWTransportMessage tm;
unsigned char StationMacAddr[MAC_ADDR_LEN];
char string[10];
char socketctl_path_name[50];
char socketserv_path_name[50];
int msglen = pm->pos;
pm->pos = 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");
switch (pm->data_msgType) {
case CW_DATA_MSG_FRAME_TYPE:
/*Retrive mac address station from msg */
memset(StationMacAddr, 0, MAC_ADDR_LEN);
memcpy(StationMacAddr, pm->data + SOURCE_ADDR_START, MAC_ADDR_LEN);
int seqNum = CWGetSeqNum();
//Send a Station Configuration Request
if (CWAssembleStationConfigurationRequest(&gWTPs[WTPIndex].messages, gWTPs[WTPIndex].pathMTU,
seqNum, StationMacAddr, CW_MSG_ELEMENT_ADD_STATION_CW_TYPE)) {
if (CWACSendAcknowledgedPacket(WTPIndex, CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE, seqNum))
return CW_TRUE;
else
CWACStopRetransmission(WTPIndex);
CWDebugLog("Send a Station Configuration Request");
}
break;
case CW_DATA_MSG_KEEP_ALIVE_TYPE:
{
unsigned char *valPtr = NULL;
CWProtocolMessage sessionIDmsgElem;
int i;
int dataSocket = 0;
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWNetworkLev4Address address;
CWParseFormatMsgElem(pm, &elemType, &elemLen);
valPtr = CWParseSessionID(pm, elemLen);
CW_ZERO_MEMORY(&sessionIDmsgElem, sizeof(CWProtocolMessage));
CWAssembleMsgElemSessionID(NULL, &sessionIDmsgElem, valPtr);
if (!CWAssembleDataMessage(&tm, gWTPs[WTPIndex].pathMTU, 1, BINDING_IEEE_802_11, CW_TRUE, CW_FALSE, NULL, NULL, &sessionIDmsgElem)) {
CWLog("Failure Assembling KeepAlive Request");
CWReleaseTransportMessage(&tm);
CWReleaseMessage(&sessionIDmsgElem);
return CW_FALSE;
}
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].address));
break;
}
}
if (dataSocket == 0) {
CWLog("data socket of WTP %d isn't ready.", WTPIndex);
return CW_FALSE;
}
/* Set port and address of data tunnel */
sock_set_port_cw((struct sockaddr *)&(address), htons(CW_DATA_PORT));
for (i = 0; i < tm.count; i++) {
if (!CWNetworkSendUnsafeUnconnected(dataSocket,
&(address), tm.parts[i].data, tm.parts[i].pos)) {
CWLog("Failure sending KeepAlive Request");
CWReleaseTransportMessage(&tm);
break;
}
}
CWReleaseTransportMessage(&tm);
CWReleaseMessage(&sessionIDmsgElem);
break;
}
case CW_IEEE_802_3_FRAME_TYPE:
CWDebugLog("Write 802.3 data to TAP[%d], len:%d", gWTPs[WTPIndex].tap_fd, msglen);
if (write(gWTPs[WTPIndex].tap_fd, pm->data, msglen) < 0)
CWLog("Sending a data packet to the tap if failed with: %s", strerror(errno));
break;
case CW_IEEE_802_11_FRAME_TYPE:
{
struct ieee80211_hdr *hdr;
u16 fc;
hdr = (struct ieee80211_hdr *)pm->data;
fc = le_to_host16(hdr->frame_control);
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT || isEAPOL_Frame(pm->data, msglen)) {
CWACsend_data_to_hostapd(WTPIndex, pm->data, msglen);
} else if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) {
if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_NULLFUNC) {
CWACsend_data_to_hostapd(WTPIndex, pm->data, msglen);
} else {
int write_bytes =
write(gWTPs[WTPIndex].tap_fd, pm->data + HLEN_80211,
msglen - HLEN_80211);
if (write_bytes != (msglen - 24)) {
CWLog("%02X %02X %02X %02X %02X %02X ",
pm->data[0], pm->data[1], pm->data[2],
pm->data[3], pm->data[4], pm->data[5]);
CWLog("Error:. RecvByte:%d, write_Byte:%d ", msglen - 24, write_bytes);
}
}
} else {
if (write(gWTPs[WTPIndex].tap_fd, pm->data + HLEN_80211, msglen - HLEN_80211) < 0)
CWLog("Sending a data packet to the tap if failed with: %s", strerror(errno));
CWDebugLog("Control Frame !!!\n");
}
//flush_pcap(pm->data, msglen, "cap_wtp_to_ac.txt");
break;
}
case CW_DATA_MSG_FREQ_STATS_TYPE:
{
int cells; /* How many cell are heard */
int isAck;
char *freqPayload;
int socketIndex, indexToSend = htonl(WTPIndex);
int sizeofAckInfoUnit = CW_FREQ_ACK_SIZE;
int sizeofFreqInfoUnit = CW_FREQ_CELL_INFO_PAYLOAD_SIZE;
int sizeOfPayload = 0, payload_offset = 0;
CWDebugLog("Manage special data packets with frequency - Stats");
/*-----------------------------------------------------------------------------------------------
* Payload Management ( infos for frequency application) :
* Ack Structure : | WTPIndex | Ack Value |
* Freq Info Structure : | WTPIndex | Number of cells | Frequecies Info Payload |
*-----------------------------------------------------------------------------------------------*/
memcpy(&isAck, pm->data, sizeof(int));
isAck = ntohl(isAck);
if (isAck == 0) { /* isnt an ack message */
memcpy(&cells, pm->data + sizeof(int), sizeof(int));
cells = ntohl(cells);
sizeOfPayload = (cells * sizeofFreqInfoUnit) + (2 * sizeof(int));
} else {
sizeOfPayload = sizeofAckInfoUnit;
}
if ((freqPayload = malloc(sizeOfPayload)) != NULL) {
memset(freqPayload, 0, sizeOfPayload);
memcpy(freqPayload, &indexToSend, sizeof(int));
payload_offset += sizeof(int);
if (isAck == 0) {
memcpy(freqPayload + payload_offset, pm->data + sizeof(int),
sizeOfPayload - payload_offset);
} else {
memcpy(freqPayload + payload_offset, pm->data + sizeof(int),
sizeOfPayload - payload_offset);
}
socketIndex = gWTPs[WTPIndex].applicationIndex;
/****************************************************
* Forward payload to correct application *
****************************************************/
if (!CWErr(CWThreadMutexLock(&appsManager.socketMutex[socketIndex]))) {
CWLog("[ACrunState]:: Error locking socket Application Mutex");
free(freqPayload);
return CW_FALSE;
}
if (Writen(appsManager.appSocket[socketIndex], freqPayload, sizeOfPayload) < 0) {
CWThreadMutexUnlock(&appsManager.socketMutex[socketIndex]);
free(freqPayload);
CWLog("[ACrunState]:: Error writing Message To Application");
return CW_FALSE;
}
CWThreadMutexUnlock(&appsManager.socketMutex[socketIndex]);
free(freqPayload);
} else
CWLog("[ACrunState]:: Malloc error (payload to frequency application");
break;
}
case CW_DATA_MSG_STATS_TYPE:
if (!UnixSocksArray[WTPIndex].data_stats_sock) {
//Init Socket only the first time when the function is called
if ((UnixSocksArray[WTPIndex].data_stats_sock =
socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) {
CWDebugLog("Error creating socket for data send");
return CW_FALSE;
}
memset(&(UnixSocksArray[WTPIndex].clntaddr), 0,
sizeof(UnixSocksArray[WTPIndex].clntaddr));
UnixSocksArray[WTPIndex].clntaddr.sun_family = AF_UNIX;
//make unix socket client path name by index i
snprintf(string, sizeof(string), "%d", WTPIndex);
string[sizeof(string) - 1] = 0;
strcpy(socketctl_path_name, SOCKET_PATH_AC);
strcat(socketctl_path_name, string);
strcpy(UnixSocksArray[WTPIndex].clntaddr.sun_path, socketctl_path_name);
unlink(socketctl_path_name);
memset(&(UnixSocksArray[WTPIndex].servaddr), 0,
sizeof(UnixSocksArray[WTPIndex].servaddr));
UnixSocksArray[WTPIndex].servaddr.sun_family = AF_UNIX;
//make unix socket server path name by index i
strcpy(socketserv_path_name, SOCKET_PATH_RECV_AGENT);
strcat(socketserv_path_name, string);
strcpy(UnixSocksArray[WTPIndex].servaddr.sun_path, socketserv_path_name);
printf("\n%s\t%s", socketserv_path_name, socketctl_path_name);
fflush(stdout);
}
int nbytes;
int pDataLen = 656; //len of Monitoring Data
//Send data stats from AC thread to monitor client over unix socket
nbytes = sendto(UnixSocksArray[WTPIndex].data_stats_sock, pm->data, pDataLen, 0,
(struct sockaddr *)&(UnixSocksArray[WTPIndex].servaddr),
sizeof(UnixSocksArray[WTPIndex].servaddr));
if (nbytes < 0) {
CWDebugLog("Error sending data over socket");
return CW_FALSE;
}
break;
}
return CW_TRUE;
}
if (!(CWACParseGenericRunMessage(WTPIndex, pm, &controlVal))) {
/* Two possible errors: WRONG_ARG and INVALID_FORMAT
* In the second case we have an unexpected response: ignore the
* message and log the event.
*/
return CW_FALSE;
}
switch (controlVal.messageTypeValue) {
case CW_MSG_TYPE_VALUE_CONFIGURE_UPDATE_RESPONSE:
{
CWProtocolResultCode resultCode = 0;
CWProtocolVendorSpecificValues *protocolValues = NULL;
if (!CWParseConfigurationUpdateResponseMessage
(pm, controlVal.msgElemsLen, &resultCode, &protocolValues))
return CW_FALSE;
CWACStopRetransmission(WTPIndex);
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
CWSaveConfigurationUpdateResponseMessage(resultCode, WTPIndex, protocolValues);
if (gWTPs[WTPIndex].interfaceCommandProgress == CW_TRUE) {
CWThreadMutexLock(&gWTPs[WTPIndex].interfaceMutex);
gWTPs[WTPIndex].interfaceResult = 1;
gWTPs[WTPIndex].interfaceCommandProgress = CW_FALSE;
CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceComplete);
CWThreadMutexUnlock(&gWTPs[WTPIndex].interfaceMutex);
}
break;
}
case CW_MSG_TYPE_VALUE_CHANGE_STATE_EVENT_REQUEST:
{
CWProtocolChangeStateEventRequestValues *valuesPtr;
if (!(CWParseChangeStateEventRequestMessage2(pm, controlVal.msgElemsLen, &valuesPtr)))
return CW_FALSE;
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
if (!(CWSaveChangeStateEventRequestMessage(valuesPtr, &(gWTPs[WTPIndex].WTPProtocolManager))))
return CW_FALSE;
if (!(CWAssembleChangeStateEventResponse(&tm, gWTPs[WTPIndex].pathMTU, controlVal.seqNum)))
return CW_FALSE;
break;
}
case CW_MSG_TYPE_VALUE_ECHO_REQUEST:
{
if (!(CWParseEchoRequestMessage(pm, controlVal.msgElemsLen)))
return CW_FALSE;
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
if (!(CWAssembleEchoResponse(&tm, gWTPs[WTPIndex].pathMTU, controlVal.seqNum)))
return CW_FALSE;
break;
}
case CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE:
{
CWProtocolResultCode resultCode;
if (!(CWParseStationConfigurationResponseMessage(pm, controlVal.msgElemsLen, &resultCode)))
return CW_FALSE;
CWACStopRetransmission(WTPIndex);
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
//CWSaveStationConfigurationResponseMessage(resultCode, WTPIndex); <-- Must be Implemented ????
break;
}
case CW_MSG_TYPE_VALUE_CLEAR_CONFIGURATION_RESPONSE:
{
CWProtocolResultCode resultCode;
if (!(CWParseClearConfigurationResponseMessage(pm, controlVal.msgElemsLen, &resultCode)))
return CW_FALSE;
CWACStopRetransmission(WTPIndex);
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
if (gWTPs[WTPIndex].interfaceCommandProgress == CW_TRUE) {
CWThreadMutexLock(&gWTPs[WTPIndex].interfaceMutex);
gWTPs[WTPIndex].interfaceResult = 1;
gWTPs[WTPIndex].interfaceCommandProgress = CW_FALSE;
CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceComplete);
CWThreadMutexUnlock(&gWTPs[WTPIndex].interfaceMutex);
}
break;
}
case CW_MSG_TYPE_VALUE_WLAN_CONFIGURATION_RESPONSE:
{
CWProtocolResultCode resultCode;
if (!(CWParseWLANConfigurationResponseMessage(pm, controlVal.msgElemsLen, &resultCode)))
return CW_FALSE;
CWACStopRetransmission(WTPIndex);
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
if (gWTPs[WTPIndex].interfaceCommandProgress == CW_TRUE) {
CWThreadMutexLock(&gWTPs[WTPIndex].interfaceMutex);
gWTPs[WTPIndex].interfaceResult = 1;
gWTPs[WTPIndex].interfaceCommandProgress = CW_FALSE;
CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceComplete);
CWThreadMutexUnlock(&gWTPs[WTPIndex].interfaceMutex);
}
break;
}
case CW_MSG_TYPE_VALUE_DATA_TRANSFER_REQUEST:
{
CWProtocolWTPDataTransferRequestValues valuesPtr;
if (!(CWParseWTPDataTransferRequestMessage(pm, controlVal.msgElemsLen, &valuesPtr)))
return CW_FALSE;
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
if (!
(CWAssembleWTPDataTransferResponse(&tm, gWTPs[WTPIndex].pathMTU, controlVal.seqNum)))
return CW_FALSE;
break;
}
case CW_MSG_TYPE_VALUE_WTP_EVENT_REQUEST:
{
CWProtocolWTPEventRequestValues valuesPtr;
if (!(CWParseWTPEventRequestMessage(pm, controlVal.msgElemsLen, &valuesPtr)))
return CW_FALSE;
if (timerSet) {
if (!CWRestartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
} else {
if (!CWStartNeighborDeadTimer(WTPIndex)) {
CWCloseThread();
}
}
if (!(CWSaveWTPEventRequestMessage(&valuesPtr, &(gWTPs[WTPIndex].WTPProtocolManager))))
return CW_FALSE;
if (!(CWAssembleWTPEventResponse(&tm, gWTPs[WTPIndex].pathMTU, controlVal.seqNum)))
return CW_FALSE;
break;
}
default:
/*
* We have an unexpected request and we have to send
* a corresponding response containing a failure result code
*/
CWDebugLog("--> Not valid Request in Run State... we send a failure Response");
if (!(CWAssembleUnrecognizedMessageResponse(&tm, gWTPs[WTPIndex].pathMTU,
controlVal.seqNum, controlVal.messageTypeValue + 1)))
return CW_FALSE;
break;
/*return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Message not valid in Run State"); */
}
if (tm.count > 0) {
for (i = 0; i < tm.count; i++) {
#ifdef CW_NO_DTLS
if (!CWNetworkSendUnsafeUnconnected(gWTPs[WTPIndex].socket,
&gWTPs[WTPIndex].address,
tm.parts[i].data, tm.parts[i].pos)) {
#else
if (!(CWSecuritySend(gWTPs[WTPIndex].session, tm.parts[i].data, tm.parts[i].pos))) {
#endif
return CW_FALSE;
}
}
CWReleaseTransportMessage(&tm);
}
gWTPs[WTPIndex].currentState = CW_ENTER_RUN;
gWTPs[WTPIndex].subState = CW_WAITING_REQUEST;
return CW_TRUE;
}
CWBool CWACParseGenericRunMessage(int WTPIndex, CWProtocolMessage *pm, CWControlHeaderValues * controlVal)
{
assert(pm);
assert(controlVal);
if (!(CWParseControlHeader(pm, controlVal)))
/* will be handled by the caller */
return CW_FALSE;
/* skip timestamp */
controlVal->msgElemsLen -= CW_CONTROL_HEADER_OFFSET_FOR_MSG_ELEMS;
/* Check if it is a request */
if (controlVal->messageTypeValue % 2 == 1)
return CW_TRUE;
if ((gWTPs[WTPIndex].responseSeqNum != controlVal->seqNum) ||
(gWTPs[WTPIndex].responseType != controlVal->messageTypeValue)) {
CWDebugLog("gWTPs: %d\n", gWTPs[WTPIndex].responseSeqNum);
CWDebugLog("controlVal: %d\n", controlVal->seqNum);
CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Seq Num or Msg Type not valid!");
return CW_FALSE;
}
return CW_TRUE;
}
/*Update 2009:
Added vendValues to include a response payload (to pass response data)*/
CWBool CWParseConfigurationUpdateResponseMessage(CWProtocolMessage *pm,
int len,
CWProtocolResultCode * resultCode,
CWProtocolVendorSpecificValues ** vendValues)
{
int offsetTillMessages;
assert(pm != NULL);
assert(resultCode != NULL);
offsetTillMessages = pm->pos;
CWLog("Parsing Configuration Update Response...");
/* parse message elements */
while ((pm->pos - offsetTillMessages) < len) {
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWParseFormatMsgElem(pm, &elemType, &elemLen);
switch (elemType) {
case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE:
*resultCode = CWProtocolRetrieve32(pm);
break;
/*Update 2009:
Added case to implement conf update response with payload */
case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE_WITH_PAYLOAD:{
int payloadSize = 0;
if (!(*vendValues = ralloc(NULL, CWProtocolVendorSpecificValues)))
return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL);
*resultCode = CWProtocolRetrieve32(pm);
if (CWProtocolRetrieve16(pm) != CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_CW_TYPE)
/*For now, we only have UCI payloads, so we will accept only vendor payloads for protocol data */
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Configuration Update Response");
(*vendValues)->vendorPayloadType = CWProtocolRetrieve16(pm);
switch ((*vendValues)->vendorPayloadType) {
case CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_UCI:
payloadSize = CWProtocolRetrieve32(pm);
if (payloadSize != 0) {
(*vendValues)->payload =
(void *)CWProtocolRetrieveStr(NULL, pm, payloadSize);
} else
(*vendValues)->payload = NULL;
break;
case CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_WUM:
payloadSize = CWProtocolRetrieve32(pm);
if (payloadSize <= 0) {
/* Payload can't be zero here,
* at least the message type must be specified */
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Configuration Update Response");
}
(*vendValues)->payload =
(void *)CWProtocolRetrieveRawBytes(NULL, pm, payloadSize);
break;
default:
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Configuration Update Response");
break;
}
}
break;
default:
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Configuration Update Response");
break;
}
}
if ((pm->pos - offsetTillMessages) != len)
return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Garbage at the End of the Message");
CWLog("Configuration Update Response Parsed");
return CW_TRUE;
}
CWBool CWParseWLANConfigurationResponseMessage(CWProtocolMessage *pm, int len, CWProtocolResultCode * resultCode)
{
int offsetTillMessages;
assert(pm != NULL);
assert(resultCode != NULL);
offsetTillMessages = pm->pos;
CWLog("Parsing WLAN Configuration Response...");
// parse message elements
while ((pm->pos - offsetTillMessages) < len) {
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWParseFormatMsgElem(pm, &elemType, &elemLen);
switch (elemType) {
case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE:
*resultCode = CWProtocolRetrieve32(pm);
break;
default:
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Configuration WLAN Response");
break;
}
}
if ((pm->pos - offsetTillMessages) != len)
return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Garbage at the End of the Message");
CWLog("WLAN Configuration Response Parsed");
return CW_TRUE;
}
CWBool CWParseClearConfigurationResponseMessage(CWProtocolMessage *pm, int len, CWProtocolResultCode * resultCode)
{
int offsetTillMessages;
assert(pm != NULL);
assert(resultCode != NULL);
offsetTillMessages = pm->pos;
CWLog("Parsing Clear Configuration Response...");
// parse message elements
while ((pm->pos - offsetTillMessages) < len) {
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWParseFormatMsgElem(pm, &elemType, &elemLen);
switch (elemType) {
case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE:
*resultCode = CWProtocolRetrieve32(pm);
break;
default:
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Configuration Update Response");
break;
}
}
if ((pm->pos - offsetTillMessages) != len)
return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Garbage at the End of the Message");
CWLog("Clear Configuration Response Parsed");
return CW_TRUE;
}
CWBool CWParseStationConfigurationResponseMessage(CWProtocolMessage *pm, int len,
CWProtocolResultCode * resultCode)
{
int offsetTillMessages;
assert(pm != NULL);
assert(resultCode != NULL);
offsetTillMessages = pm->pos;
CWLog("Parsing Station Configuration Response...");
// parse message elements
while ((pm->pos - offsetTillMessages) < len) {
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWParseFormatMsgElem(pm, &elemType, &elemLen);
switch (elemType) {
case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE:
*resultCode = CWProtocolRetrieve32(pm);
break;
default:
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in Station Configuration Response");
break;
}
}
if ((pm->pos - offsetTillMessages) != len)
return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Garbage at the End of the Message");
CWLog("Station Configuration Response Parsed");
return CW_TRUE;
}
CWBool CWSaveConfigurationUpdateResponseMessage(CWProtocolResultCode resultCode,
int WTPIndex, CWProtocolVendorSpecificValues * vendValues)
{
char *wumPayloadBytes = NULL;
int closeWTPManager = CW_FALSE;
if (vendValues != NULL) {
char *responseBuffer;
int socketIndex, payloadSize = 0, headerSize, netWTPIndex, netresultCode, netpayloadSize;
/********************************
*Payload Management *
********************************/
headerSize = 3 * sizeof(int);
switch (vendValues->vendorPayloadType) {
case CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_UCI:
if (vendValues->payload != NULL)
payloadSize = strlen((char *)vendValues->payload);
else
payloadSize = 0;
break;
case CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_WUM:
wumPayloadBytes = vendValues->payload;
payloadSize = 1;
/*
* When dealing with WUM responses, the dafault size
* is 1 bytes, which is used for the type.
*
* The only response message with a bigger payload is the
* WTP_VERSION_RESPONSE (4 bytes), as it carries the WTP version
* together with the response type.
*/
if (wumPayloadBytes[0] == WTP_VERSION_RESPONSE)
payloadSize = 4;
/*
* If we received a positive WTP_COMMIT_ACK, we need to terminate
* the WTP Manager Thread.
*/
if (wumPayloadBytes[0] == WTP_COMMIT_ACK && resultCode == CW_PROTOCOL_SUCCESS)
closeWTPManager = CW_TRUE;
break;
}
if ((responseBuffer = malloc(headerSize + payloadSize)) != NULL) {
netWTPIndex = htonl(WTPIndex);
memcpy(responseBuffer, &netWTPIndex, sizeof(int));
netresultCode = htonl(resultCode);
memcpy(responseBuffer + sizeof(int), &netresultCode, sizeof(int));
netpayloadSize = htonl(payloadSize);
memcpy(responseBuffer + (2 * sizeof(int)), &netpayloadSize, sizeof(int));
if (payloadSize > 0) {
memcpy(responseBuffer + headerSize, (char *)vendValues->payload, payloadSize);
if (vendValues->vendorPayloadType == CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_UCI)
((char *)vendValues->payload)[payloadSize] = '\0';
}
socketIndex = gWTPs[WTPIndex].applicationIndex;
/****************************************************
* Forward payload to correct application *
****************************************************/
if (!CWErr(CWThreadMutexLock(&appsManager.socketMutex[socketIndex]))) {
CWLog("Error locking numSocketFree Mutex");
return CW_FALSE;
}
if (Writen(appsManager.appSocket[socketIndex], responseBuffer, headerSize + payloadSize) < 0) {
CWThreadMutexUnlock(&appsManager.socketMutex[socketIndex]);
CWLog("Error locking numSocketFree Mutex");
return CW_FALSE;
}
CWThreadMutexUnlock(&appsManager.socketMutex[socketIndex]);
}
free(responseBuffer);
CW_FREE_OBJECT(vendValues->payload);
CW_FREE_OBJECT(vendValues);
} else if (!CWBindingSaveConfigurationUpdateResponse(resultCode, WTPIndex)) {
return CW_FALSE;
}
/*
* On a positive WTP_COMMIT_ACK, we need to close the WTP Manager.
*/
if (closeWTPManager) {
gWTPs[WTPIndex].isRequestClose = CW_TRUE;
CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceWait);
}
CWDebugLog("Configuration Update Response Saved");
return CW_TRUE;
}
CWBool CWParseWTPDataTransferRequestMessage(CWProtocolMessage *pm, int len,
CWProtocolWTPDataTransferRequestValues * valuesPtr)
{
int offsetTillMessages;
assert(pm != NULL);
assert(valuesPtr != NULL);
offsetTillMessages = pm->pos;
CWLog("#");
CWLog("#________ WTP Data Transfer (Run) ________#");
CWLog("Parsing WTP Data Transfer Request...");
// parse message elements
while ((pm->pos - offsetTillMessages) < len) {
unsigned short int elemType = 0;
unsigned short int elemLen = 0;
CWParseFormatMsgElem(pm, &elemType, &elemLen);
switch (elemType) {
case CW_MSG_ELEMENT_DATA_TRANSFER_DATA_CW_TYPE:{
if (!(CWParseMsgElemDataTransferData(pm, elemLen, valuesPtr)))
return CW_FALSE;
CWDebugLog("----- %s --------\n", valuesPtr->debug_info);
break;
}
default:
return CWErrorRaise(CW_ERROR_INVALID_FORMAT,
"Unrecognized Message Element in WTP Data Transfer Request");
break;
}
}
if ((pm->pos - offsetTillMessages) != len)
return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Garbage at the End of the Message");
return CW_TRUE;
}
CWBool CWParseWTPEventRequestMessage(CWProtocolMessage *pm, int len, CWProtocolWTPEventRequestValues * valuesPtr)
{