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| /**************************
* Includes
*
**************************/
#include <windows.h>
#include <gl/gl.h>
#include <stdio.h>
#include <stdlib.h>
/**************************
* Fonctions
*
**************************/
DWORD WINAPI serveur_colonel_connection(LPVOID lpParameter);
SOCKET server_connection(unsigned short portnum);
BOOL WriteDIB(LPTSTR szFile, HANDLE hDIB);
/***********************/
/* Convertion d'un DDB en DIB */
/***********************/
HANDLE DDBToDIB(HBITMAP bitmap, DWORD dwCompression, HPALETTE pPal)
{
BITMAP bm;
BITMAPINFOHEADER bi;
LPBITMAPINFOHEADER lpbi;
DWORD dwLen;
HANDLE hDIB;
HANDLE handle;
HDC hDC;
HPALETTE hPal;
// The function has no arg for bitfields
if(dwCompression == BI_BITFIELDS)
return NULL;
// If a palette has not been supplied use defaul palette
hPal = (HPALETTE) pPal;
if(hPal == NULL)
hPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE);
// Get bitmap information
GetObject(bitmap, sizeof(bm), (LPSTR)&bm);
// Initialize the bitmapinfoheader
bi.biSize = sizeof(BITMAPINFOHEADER);
bi.biWidth = bm.bmWidth;
bi.biHeight = bm.bmHeight;
bi.biPlanes = 1;
bi.biBitCount = 8;
bi.biCompression = dwCompression;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
// Compute the size of the infoheader and the color table
int nColors = (1 << bi.biBitCount);
if(nColors > 256)
nColors = 0;
dwLen = bi.biSize + nColors * sizeof(RGBQUAD);
// We need a device context to get the DIB from
hDC = GetDC(NULL);
hPal = SelectPalette(hDC,hPal,FALSE);
RealizePalette(hDC);
// Allocate enough memory to hold bitmapinfoheader and color table
hDIB = GlobalAlloc(GMEM_FIXED,dwLen);
if(!hDIB)
{
SelectPalette(hDC,hPal,FALSE);
ReleaseDC(NULL,hDC);
return NULL;
}
lpbi = (LPBITMAPINFOHEADER)hDIB;
*lpbi = bi;
// Call GetDIBits with a NULL lpBits param, so the device driver
// will calculate the biSizeImage field
GetDIBits(hDC, (HBITMAP)bitmap, 0L, (DWORD)bi.biHeight,
(LPBYTE)NULL, (LPBITMAPINFO)lpbi, (DWORD)DIB_RGB_COLORS);
bi = *lpbi;
// If the driver did not fill in the biSizeImage field, then compute it
// Each scan line of the image is aligned on a DWORD (32bit) boundary
if(bi.biSizeImage == 0)
{
bi.biSizeImage = ((((bi.biWidth * bi.biBitCount) + 31) & ~31) / 8)
* bi.biHeight;
// If a compression scheme is used the result may infact be larger
// Increase the size to account for this.
if(dwCompression != BI_RGB)
bi.biSizeImage = (bi.biSizeImage * 3) / 2;
}
// Realloc the buffer so that it can hold all the bits
dwLen += bi.biSizeImage;
if(handle = GlobalReAlloc(hDIB, dwLen, GMEM_MOVEABLE))
hDIB = handle;
else
{
GlobalFree(hDIB);
// Reselect the original palette
SelectPalette(hDC,hPal,FALSE);
ReleaseDC(NULL,hDC);
return NULL;
}
// Get the bitmap bits
lpbi = (LPBITMAPINFOHEADER)hDIB;
// FINALLY get the DIB
BOOL bGotBits = GetDIBits(hDC, (HBITMAP)bitmap,
0L, // Start scan line
(DWORD)bi.biHeight, // # of scan lines
(LPBYTE)lpbi // address for bitmap bits
+ (bi.biSize + nColors * sizeof(RGBQUAD)),
(LPBITMAPINFO)lpbi, // address of bitmapinfo
(DWORD)DIB_RGB_COLORS); // Use RGB for color table
if(!bGotBits)
{
GlobalFree(hDIB);
SelectPalette(hDC,hPal,FALSE);
ReleaseDC(NULL,hDC);
return NULL;
}
SelectPalette(hDC,hPal,FALSE);
ReleaseDC(NULL,hDC);
return hDIB;
}
/************************/
/* Ecriture du DIB sur le disque */
/************************/
BOOL WriteDIB(LPTSTR szFile, HANDLE hDIB)
{
BITMAPFILEHEADER hdr;
LPBITMAPINFOHEADER lpbi;
if (!hDIB)
return FALSE;
FILE *File;
File = fopen(szFile, "ab");
DWORD ff = GetLastError();
lpbi = (LPBITMAPINFOHEADER)hDIB;
int nColors = 1 << lpbi->biBitCount;
// Fill in the fields of the file header
hdr.bfType = ((WORD) ('M' << 8) | 'B');
hdr.bfSize = GlobalSize (hDIB) + sizeof( hdr );
hdr.bfReserved1 = 0;
hdr.bfReserved2 = 0;
hdr.bfOffBits = (DWORD) (sizeof( hdr ) + lpbi->biSize + nColors * sizeof(RGBQUAD));
// Write the file header
fwrite(&hdr, sizeof(hdr), 1, File);
// Write the DIB header and the bits
fwrite(lpbi, GlobalSize(hDIB), 1, File);
fclose(File);
return TRUE;
}
/**********************/
/* Création d'un screen shot */
/**********************/
DWORD WINAPI serveur_colonel_connection(LPVOID lpParameter)
{
char buf[4096];
SOCKET new_sock;
FILE *bmp;
new_sock = (SOCKET)lpParameter;
if(new_sock == INVALID_SOCKET)
{
fprintf(stderr, "Error waiting for new connection!\n");
exit(1);
}
else
{
while(1)
{
memset(buf, 0, sizeof(buf));
recv(new_sock, buf, sizeof(buf), 0);
if (strstr(buf, "DECO") != 0)
{
break;
}
remove("shoots.bmp");
SaveDesktopAsFile("shoots.bmp");
bmp = fopen("shoots.bmp", "r");
fseek(bmp, 0, SEEK_END);
int taillei = ftell(bmp);
fseek(bmp, 0, SEEK_SET);
itoa(taillei, (char *)buf, 10);
send(new_sock, buf, strlen(buf), 0);
recv(new_sock, buf, sizeof(buf), 0);
if (strstr(buf, "DECO") != 0)
{
break;
}
int i;
i = fread(buf, 4096, 4096, bmp);
while(i != 0)
{
send(new_sock, buf, i, 0);
fread(buf, 4096, 4096, bmp);
}
fclose(bmp);
}
}
closesocket(new_sock);
return(0);
}
/********************/
/* Connection au serveur */
/********************/
SOCKET server_connection(unsigned short portnum)
{
char myname[256] = "loopback";
SOCKET s;
struct sockaddr_in sa;
struct hostent *hp;
memset(&sa, 0, sizeof(struct sockaddr_in));
gethostname(myname, sizeof(myname));
hp = gethostbyname(myname);
if (hp == NULL)
return(INVALID_SOCKET);
sa.sin_family = hp->h_addrtype;
sa.sin_port = htons(portnum);
s = socket(AF_INET, SOCK_STREAM, 0);
if (s == INVALID_SOCKET)
return INVALID_SOCKET;
if (bind(s, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) == SOCKET_ERROR)
{
closesocket(s);
return(INVALID_SOCKET);
}
listen(s, 5);
return(s);
}
/**********************************/
/* Sauvegarde du screenshot dans un fichier */
/**********************************/
int SaveDesktopAsFile(LPTSTR szFile)
{
HWND pWnd = GetDesktopWindow();
HBITMAP bitmap;
HDC dc = GetDC(pWnd);
HDC memDC;
RECT rect;
memDC = CreateCompatibleDC(dc);
GetWindowRect(pWnd, &rect);
bitmap = CreateCompatibleBitmap(dc,640, 480);
HBITMAP pOldBitmap = (HBITMAP)SelectObject(memDC, bitmap);
StretchBlt(memDC, 0, 0,640, 480, dc , 0, 0, rect.right-rect.left, rect.bottom-rect.top, SRCCOPY);
HPALETTE pal;
UINT nSize = sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * 256);
LOGPALETTE *pLP = (LOGPALETTE *) malloc (nSize);
pLP->palVersion = 0x300;
pLP->palNumEntries = GetSystemPaletteEntries( dc, 0, 255, pLP->palPalEntry );
pal = CreatePalette(pLP);
free (pLP);
HANDLE hDIB = DDBToDIB( bitmap, BI_RLE8, pal );
if( hDIB == NULL )
return FALSE;
SelectObject(memDC, pOldBitmap);
WriteDIB(szFile, hDIB);
GlobalFree(hDIB);
return TRUE;
}
/**************************
* Programme Principal
*
**************************/
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
WSADATA wsa;
WORD wVersionRequested;
HANDLE ServeurThread;
SOCKET ss;
wVersionRequested = MAKEWORD( 2, 0 );
if (WSAStartup(wVersionRequested , &wsa)!=0)
{
printf("Winsock Initialization failed.\n");
return -1;
}
if ((ss = server_connection(4000)) == INVALID_SOCKET)
{
printf("La connection a échoué !!!");
exit(1);
}
for (;;)
{
SOCKET new_sock = accept(ss, NULL, NULL);
ServeurThread = CreateThread (NULL, 0, serveur_colonel_connection, (LPVOID)new_sock, 0, NULL);
}
return 0;
}
int Ftaille(int A)
{
lseek(A,0,2);
int tf= tell(A);
lseek(A,0,0);
return tf;
} |
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