/*
* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
* This file contains implementation of HtiMessage class.
*/
#include "htimessage.h"
#include "crc16.h"
#include <memory.h>
#include <crtdbg.h>
#include <stdio.h>
static const BYTE HTI_ERR_CMD = 0xFF;
static const int HTI_MIN_ERR_MSG_SIZE = 10;
static const int HTI_MAX_ERR_MSG_SIZE = 0xFF;
HtiMessage::HtiMessage(DWORD serviceId, void* body, DWORD len, BYTE priority)
{
m_ErrDescr = NULL;
m_Size = len + KMsgHeaderMinSize;
m_Message = new BYTE[m_Size];
//_RPT1(_CRT_WARN,"HtiMessage::HtiMessage %x\n", body);
//_RPT2(_CRT_WARN,"HtiMessage::HtiMessage m_Message %x <%d>\n", m_Message, m_Size);
memset(m_Message, 0, KMsgHeaderMinSize);
memcpy(m_Message + KMsgHeaderMinSize, body, len);
*((DWORD*)(m_Message + KMsgServiceNameOffset)) = serviceId;
*((DWORD*)(m_Message + KMsgBodySizeOffset)) = len;
m_Message[KMsgVersionOffset] = KDefaultVersion;
m_Message[KMsgPriorityOffset] = priority;
//CRC
*((WORD*)(m_Message + KMsgCrcOffset)) = CRC16CCITT(m_Message, KMsgHeaderMinSize-2);
}
HtiMessage::HtiMessage(void* message, DWORD len)
{
m_ErrDescr = NULL;
BYTE* srcMsg = (BYTE*)message;
int extSize = srcMsg[KMsgExtSizeOffset];
int headerSize = MinHeaderSize() + extSize;
m_Size = *((DWORD*)(srcMsg + KMsgBodySizeOffset));
m_Size += headerSize;
//allocate header space
m_Message = new BYTE[m_Size];
//_RPT1(_CRT_WARN,"HtiMessage::HtiMessage %x \n", message);
//_RPT2(_CRT_WARN,"HtiMessage::HtiMessage m_Message %x <%d>\n", m_Message, m_Size);
//copy message
m_MessageReminderSize = m_Size;
AddToBody( message, len);
//memcpy( m_Message, message, min(m_MessageReminderSize, len) );
//m_MessageReminderSize -= min(m_MessageReminderSize, len);
}
DWORD HtiMessage::AddToBody(void* data, DWORD len)
{
//_RPT1(_CRT_WARN,"HtiMessage::AddToBody %x\n", data);
DWORD copyLen = min(m_MessageReminderSize, len);
memcpy( m_Message + m_Size - m_MessageReminderSize, data, copyLen);
m_MessageReminderSize -= copyLen;
return copyLen;
/*
if ( m_MessageReminderSize <= len) //last part
{
memcpy(m_Message + m_Size - m_MessageReminderSize, data, m_MessageReminderSize);
DWORD copyLen = m_MessageReminderSize;
m_MessageReminderSize = 0;
return copyLen;
}
else //in the middle
{
memcpy(m_Message + m_Size - m_MessageReminderSize, data, len);
m_MessageReminderSize -= len;
}
return len;
*/
}
HtiMessage::~HtiMessage()
{
//_RPT1(_CRT_WARN,"~HtiMessage err %x\n", m_ErrDescr);
//_RPT1(_CRT_WARN,"~HtiMessage msg %x\n", m_Message);
delete[] m_ErrDescr;
delete[] m_Message;
}
/**
* Returns whole HTI message including header
*/
void* HtiMessage::HtiData()
{
return m_Message;
}
DWORD HtiMessage::HtiDataSize()
{
return m_Size;
}
DWORD HtiMessage::GetBodySize()
{
return *((DWORD*)(m_Message + KMsgBodySizeOffset));
}
DWORD HtiMessage::GetExtSize()
{
return m_Message[KMsgExtSizeOffset];
}
int HtiMessage::GetBodyStart()
{
return GetExtSize()+MinHeaderSize();
}
void* HtiMessage::GetBody()
{
return m_Message+GetBodyStart();
}
DWORD HtiMessage::GetServiceUID()
{
return *((DWORD*)(m_Message + KMsgServiceNameOffset));
}
bool HtiMessage::CheckValidHtiHeader(void* header)
{
//check CRC16
WORD headerCrc16 = *((WORD*)((BYTE*)header+KMsgCrcOffset));
WORD calcCrc16 = CRC16CCITT(header, KMsgCrcOffset);
return headerCrc16 == calcCrc16;
}
DWORD HtiMessage::ExtractMsgSizeFromHeader(void* header)
{
return *((DWORD*)(((BYTE*)header)+KMsgBodySizeOffset));
}
int HtiMessage::MinHeaderSize()
{
return KMsgHeaderMinSize;
}
HtiMessage* HtiMessage::CreateErrorMessage(int errorCode, const char* errDescr)
{
BYTE* msg = new BYTE[ HTI_MAX_ERR_MSG_SIZE ];
memset(msg, 0, HTI_MAX_ERR_MSG_SIZE );
msg[0] = HTI_ERR_CMD;
*((DWORD*)(msg + HtiServiceErrCodeOffset)) = errorCode;
*((DWORD*)(msg + HtiErrServiceUidOffset)) = HTI_SYSTEM_SERVICE_UID;
int descrLen = min(strlen( errDescr ), HTI_MAX_ERR_MSG_SIZE - HtiErrDescrOffset );
memcpy( msg + HtiErrDescrOffset,
errDescr,
descrLen
);
HtiMessage* newMsg = new HtiMessage(HTI_SYSTEM_SERVICE_UID,
msg,
descrLen + HtiErrDescrOffset + MinHeaderSize());
return newMsg;
}
bool HtiMessage::IsErrorMessage()
{
if ( m_Message )
{
return GetServiceUID() == HTI_SYSTEM_SERVICE_UID &&
m_Message[GetBodyStart()] == HTI_ERR_CMD &&
GetBodySize()>= HTI_MIN_ERR_MSG_SIZE ;
}
return false;
}
int HtiMessage::HtiErrorCode()
{
if ( IsErrorMessage() )
{
return m_Message[GetBodyStart()+HtiErrCodeOffset];
}
return -1;
}
int HtiMessage::ServiceErrorCode()
{
if ( IsErrorMessage() )
{
return *((DWORD*)(m_Message + GetBodyStart() + HtiServiceErrCodeOffset));
}
return -1;
}
char* HtiMessage::ErrorDescription()
{
if ( IsErrorMessage() )
{
int desrLen = GetBodySize() - HtiErrDescrOffset;
m_ErrDescr = new char[desrLen+1];
//_RPT2(_CRT_WARN,"HtiMessage::ErrorDescription %x <%d>\n", m_ErrDescr, desrLen+1);
memcpy( m_ErrDescr,
m_Message + GetBodyStart() + HtiErrDescrOffset,
desrLen );
m_ErrDescr[desrLen] = 0;
return m_ErrDescr;
}
return NULL;
}
int HtiMessage::ErrorServiceUid()
{
if ( IsErrorMessage() )
{
return *((DWORD*)(m_Message + GetBodyStart() + HtiErrServiceUidOffset));
}
return -1;
}