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/*******************************************************************************
** **
** SRC-MODULE: winclientLib.cpp **
** **
** TARGET : Windows **
** **
** PROJECT : DLT **
** **
** AUTHOR : Alexander Wenzel Alexander.AW.Wenzel@bmw.de **
** Markus Klein **
** **
** PURPOSE : **
** **
** REMARKS : **
** **
** PLATFORM DEPENDANT [yes/no]: yes **
** **
** TO BE CHANGED BY USER [yes/no]: no **
** **
*******************************************************************************/
/*******************************************************************************
** Author Identity **
********************************************************************************
** **
** Initials Name Company **
** -------- ------------------------- ---------------------------------- **
** aw Alexander Wenzel BMW **
** mk Markus Klein Fraunhofer ESK **
*******************************************************************************/
/*******************************************************************************
** Revision Control History **
*******************************************************************************/
/*
* $LastChangedRevision$
* $LastChangedDate$
* $LastChangedBy$
*/
// Need to link with Ws2_32.lib, Mswsock.lib, and Advapi32.lib
// Disable C4995 and C4996 Warnings
#pragma warning(disable : 4995)
#pragma warning(disable : 4996)
#include "stdafx.h"
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#include <strsafe.h>
#include <io.h>
#include <string>
#include <iostream>
#include "winclientlib.h"
#include "dlt_client.h"
// Function prototypes
DWORD WINAPI MyThreadFunction( LPVOID lpParam );
void ErrorHandler(LPTSTR lpszFunction);
// Variables
static DWORD dwThreadId;
static HANDLE hThread;
static HANDLE hEvent;
static DltClient windltclient;
#ifdef _MANAGED
#pragma managed(push, off)
#endif
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
{
break;
}
}
return TRUE;
}
#ifdef _MANAGED
#pragma managed(pop)
#endif
using namespace std;
/*
Some helper functions
*/
DWORD WINAPI MyThreadFunction( LPVOID lpParam )
{
// Enter Main Loop
dlt_client_main_loop(&windltclient, NULL, 0);
// Send event about thread termination
SetEvent(hEvent);
ExitThread(0);
}
void ErrorHandler(LPTSTR lpszFunction)
{
// Retrieve the system error message for the last-error code.
LPVOID lpMsgBuf;
LPVOID lpDisplayBuf;
DWORD dw = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dw,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0, NULL );
// Display the error message.
lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT,
(lstrlen((LPCTSTR) lpMsgBuf) + lstrlen((LPCTSTR) lpszFunction) + 40) * sizeof(TCHAR));
StringCchPrintf((LPTSTR)lpDisplayBuf,
LocalSize(lpDisplayBuf) / sizeof(TCHAR),
TEXT("%s failed with error %d: %s"),
lpszFunction, dw, lpMsgBuf);
MessageBox(NULL, (LPCTSTR) lpDisplayBuf, TEXT("Error"), MB_OK);
// Free error-handling buffer allocations.
LocalFree(lpMsgBuf);
LocalFree(lpDisplayBuf);
}
/***
The interface functions
****/
WWINCLIENTLIB_API void Dlt_RegisterMessageCallback(int (*registerd_callback) (DltMessage *message, void *data))
{
dlt_client_register_message_callback(registerd_callback);
}
WWINCLIENTLIB_API int Dlt_StartClient(char* server_address)
{
WSADATA wsaData;
int iResult;
if ((server_address==0) || (server_address[0]=='\0'))
{
return 0;
}
// Create event, used for thread termination
hEvent = CreateEvent(NULL,FALSE,FALSE,(LPCWSTR)"Test");
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
if (iResult)
{
printf("winclientlib: WSAStartup failed: %d\n", iResult);
return -1;
}
/* Initialize DLT Client */
if (dlt_client_init(&windltclient, 0)==-1)
{
ErrorHandler(TEXT("dlt_client_init()"));
Dlt_ExitClient();
return -1;
}
/* Setup parameters of DltClient */
windltclient.sock = -1;
windltclient.serial_mode = 0; /* TCP connection:
In Windows (with Visual C++),
only TCP connection is allowed! */
windltclient.servIP = server_address; /* IP address */
/* Connect to TCP socket */
if (dlt_client_connect(&windltclient, 0)==-1)
{
ErrorHandler(TEXT("dlt_client_connect()"));
Dlt_ExitClient();
return -1;
}
// Create the thread to begin execution on its own.
hThread = CreateThread(
NULL, // default security attributes
0, // use default stack size
MyThreadFunction, // thread function name
0,//(LPVOID)address, // argument to thread function
0, // use default creation flags
&dwThreadId); // returns the thread identifier
// Check the return value for success.
// If CreateThread fails, terminate execution.
// This will automatically clean up threads and memory.
if (hThread==0)
{
ErrorHandler(TEXT("CreateThread()"));
// Cleanup WSA
WSACleanup();
return -1;
}
return 0;
}
WWINCLIENTLIB_API int Dlt_InjectCall( char appID[4], char contID[4], uint32_t serviceID, uint8_t *buf, uint32_t buf_len )
{
return dlt_client_send_inject_msg(&windltclient, appID, contID, serviceID, buf, buf_len);
}
WWINCLIENTLIB_API int Dlt_ExitClient()
{
printf("winclientlib: exiting ...\n");
// Terminate thread and close handles
if (windltclient.sock!=-1)
{
if (windltclient.serial_mode==1)
{
close(windltclient.sock);
}
else
{
closesocket(windltclient.sock);
}
windltclient.sock = -1;
WaitForSingleObject(hEvent,INFINITE);
}
CloseHandle(hEvent);
CloseHandle(hThread);
// Dlt Client Cleanup
if (dlt_client_cleanup(&windltclient,0)==-1)
{
printf("winclientlib: closing error.\n");
}
else
{
printf("winclientlib: closed.\n");
}
// Cleanup WSA
WSACleanup();
exit(0);
}
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