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/*
tabsize:4
*/
#include <stdio.h>
#include <string.h>
#define _WIN32_WINNT 0x0502
#include <Windows.h>
int cntFileProcessed = 0; //count file that processed, accumulated.
int scrWidth; //screen width
void ResetCursorPos(void)
{
CONSOLE_SCREEN_BUFFER_INFO sbi;
COORD co;
HANDLE hOutput;
hOutput = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(hOutput, &sbi);
co.X = sbi.dwCursorPosition.X-(5+1+4); //e.g.:1024M,100%
co.Y = sbi.dwCursorPosition.Y;
SetConsoleCursorPosition(hOutput, co);
//sure to leave hOutput as it was
return;
}
void ExtractFile(char* filespec)
{
#define BUFSIZE ((1<<20)*5) //5M buffer
HANDLE hFileIn = NULL; //handle of input file
HANDLE hFileOut = NULL; //handle of output file
DWORD dwSizeRead = 0; //the ReadFile function Read size
DWORD dwSizeWritten = 0;//the WriteFile function Written size
DWORD dwSize = 0;
int magicNumber = 0; //you may know when you look, I suppose.
int fileType = 0; //indicates what file it is
LARGE_INTEGER li; //for SetFilePointer function use,2M offset of REAL movie data
BYTE hdr[4]; //the *.xv file header
BYTE ch; //
char* pchar; //tmp use
char fileOut[MAX_PATH]; //namely, the output file
BYTE* buffer = NULL; //block extraction data, every time it extracts 5MB data at most
char* errMsg = NULL; //FormatMessage
int lastErr = 0; //GetLastError
int percent = 0; //percentage of processed data
int readSize = 0; //total size Read
DWORD fileSize; //total file size, for percentage use
int prtLen; //the printf(and its relative) returned
int dotLen; //as you see at the screen
int k; //I think you know...
li.LowPart = 1<<21;
li.HighPart = 0;
buffer = (BYTE*)malloc(BUFSIZE); //5M buffer size
if(buffer == NULL)
{
fprintf(stderr, "内存分配失败!\n");
return;
}
hFileIn = CreateFile(filespec, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hFileIn == INVALID_HANDLE_VALUE)
{
free(buffer);
buffer = NULL;
lastErr = GetLastError();
if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, lastErr, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), (LPSTR)&errMsg, 1, NULL))
{
fprintf(stderr, "CreateFile:%s\n%s", filespec, errMsg);
LocalFree((HLOCAL)errMsg);
errMsg = NULL;
}
return;
}
fileSize = GetFileSize(hFileIn, NULL);
if(fileSize <= 0x00200000)
{
fprintf(stderr, "文件大小不正确,不能小于2M.(%s)\n", filespec);
free(buffer);
buffer = NULL;
CloseHandle(hFileIn);
hFileIn = NULL;
return;
}
fileSize -= 0x00200000; //2M offset of REAL Video data
SetFilePointerEx(hFileIn, li, NULL, FILE_BEGIN);
if(!ReadFile(hFileIn, hdr, 4, &dwSizeRead, NULL) || dwSizeRead==0)
{
lastErr = GetLastError();
if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, lastErr, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), (LPSTR)&errMsg, 1, NULL))
{
fprintf(stderr, "ReadFile:%s\n%s", filespec, errMsg);
LocalFree((HLOCAL)errMsg);
errMsg = NULL;
}
CloseHandle(hFileIn);
hFileIn = NULL;
free(buffer);
buffer = NULL;
return;
}
magicNumber = (338-hdr[1])&0xFF;
if((BYTE)(hdr[1]+magicNumber)=='R' && (BYTE)(hdr[2]+magicNumber)=='M' && (BYTE)(hdr[3]+magicNumber)=='F')
{
fileType = 1;
goto _go;
}
magicNumber = (294-hdr[1])&0xFF;
if((BYTE)(hdr[2]+magicNumber)==178 && (BYTE)(hdr[3]+magicNumber)==117)
{
fileType = 2;
goto _go;
}
magicNumber = (332-hdr[1])&0xFF ;
if((BYTE)(hdr[1]+magicNumber)==76 && (BYTE)(hdr[2]+magicNumber)==86)
{
fileType = 3 ;
goto _go;
}
magicNumber=(329-hdr[1])&0xFF ;
if((BYTE)(hdr[1]+magicNumber)==73 && (BYTE)(hdr[2]+magicNumber)==70 && (BYTE)(hdr[3]+magicNumber)==70)
{
fileType = 4 ;
goto _go;
}
magicNumber=(256-hdr[1])&0xFF ;
if(!(magicNumber+hdr[2]))
{
fileType = 5 ;
goto _go;
}
magicNumber=(256-hdr[1])&0xFF ;
if((BYTE)(hdr[2]+magicNumber)==1 && (BYTE)(hdr[3]+magicNumber)==186)
{
fileType = 6 ;
goto _go;
}
magicNumber=(325-hdr[1])&0xFF ;
if((BYTE)(hdr[1]+magicNumber)==69 && (BYTE)(hdr[2]+magicNumber)==223 && (BYTE)(hdr[3]+magicNumber)==163)
{
fileType = 7 ;
goto _go;
}
fprintf(stderr, "不能识别的文件格式!(%s)\n", filespec);
free(buffer);
buffer = NULL;
CloseHandle(hFileIn);
hFileIn = NULL;
return;
_go:
ch = 0;
pchar = strrchr(filespec,'\\');
if(!pchar)
pchar = strrchr(filespec, '/');
pchar = pchar==NULL?filespec:pchar+1;
switch(fileType)
{
case 1://rm/rmvb
ch = 46;
sprintf(fileOut, "%s%s", pchar, ".rmvb");
break;
case 2://wmv
ch = 48;
sprintf(fileOut, "%s%s", pchar, ".wmv");
break;
case 3://flv
ch = 70;
sprintf(fileOut, "%s%s", pchar, ".flv");
break;
case 4://avi
ch = 82;
sprintf(fileOut, "%s%s", pchar, ".avi");
break;
case 5://mp4
ch = 0;
sprintf(fileOut, "%s%s", pchar, ".mp4");
break;
case 6://mpeg
ch = 0;
sprintf(fileOut, "%s%s", pchar, ".mpeg");
break;
case 7://mkv
ch = 26;
sprintf(fileOut, "%s%s", pchar, ".mkv");
break;
default:
break;
}
hFileOut = CreateFile(fileOut, GENERIC_WRITE, FILE_SHARE_READ, NULL, /*CREATE_ALWAYS*/CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL);
if(hFileOut == INVALID_HANDLE_VALUE)
{
lastErr = GetLastError();
if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, lastErr, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), (LPSTR)&errMsg, 1, NULL))
{
fprintf(stderr, "CreateFile:%s\n%s", fileOut, errMsg);
LocalFree((HLOCAL)errMsg);
errMsg = NULL;
}
CloseHandle(hFileIn);
hFileIn = NULL;
free(buffer);
buffer = NULL;
return;
}
WriteFile(hFileOut, (LPVOID)&ch, 1, &dwSizeWritten, NULL);
//handle file header
for(k = 1; k < 4; k++)
hdr[k] = (BYTE)((hdr[k]+magicNumber)&0xFF);
WriteFile(hFileOut, &hdr[1], 3, &dwSizeWritten, NULL);
//handle encrypted data. is it simple?
ReadFile(hFileIn, buffer, 1019, &dwSizeRead, NULL);
for(k=0; k<1019; k++)
buffer[k] = (BYTE)(buffer[k]+magicNumber & 0xFF);
WriteFile(hFileOut, buffer, 1019, &dwSizeWritten, NULL);
readSize += 1024;
prtLen = printf("%s(%s)", filespec, strrchr(fileOut, '.'));
dotLen = scrWidth-prtLen%scrWidth;
if(dotLen<=10)
dotLen += scrWidth;
dotLen -= 1;
while(dotLen--)
printf(".");
//it looks like this: left edge-->|mymov.xv(.flv).............1024M, 99% | <--right edge
//copy rest file, original :-), and show sth. useful. how smart thunder kankan was.
while(ReadFile(hFileIn, buffer, BUFSIZE, &dwSizeRead, NULL) && dwSizeRead != 0)
{
WriteFile(hFileOut, buffer, dwSizeRead, &dwSizeWritten, NULL);
readSize += dwSizeRead;
ResetCursorPos();
printf("%4dM,%3d%%", (int)(readSize/(1<<20)), (int)(readSize/(float)fileSize*100));
}
printf("\n");
CloseHandle(hFileIn);
CloseHandle(hFileOut);
hFileIn = NULL;
hFileOut = NULL;
free(buffer);
buffer = NULL;
cntFileProcessed++;
return;
}
//parse if there to be a wild char
void HandleFile(char* filespec)
{
WIN32_FIND_DATA fd;
HANDLE hFile = NULL;
char findpath[260];
char tmppath[260];
char* pchar = NULL;
hFile = FindFirstFile(filespec, &fd);
if(hFile == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "没有文件用于处理!\n");
return;
}
strncpy(findpath, filespec, sizeof(findpath));
//we need to add a full current path to the dest file
//since the fd.cFileName member does not include the path
pchar = strrchr(findpath, '\\');
if(!pchar)
pchar = strrchr(findpath, '/'); //sometimes, it's not back-slash-ed.
if(pchar)
*(pchar+1) = '\0';
do
{
if(!(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) //eliminate directory
{
if(pchar)
{
sprintf(tmppath, "%s%s", findpath, fd.cFileName); //now it's full path
ExtractFile(tmppath);
}
else
{
ExtractFile(fd.cFileName); //in current dir
}
}
} while (FindNextFile(hFile, &fd)); //continue deep search
FindClose(hFile);
hFile = NULL;
return;
}
void Usage(char* name)
{
char* ptr = strrchr(name, '\\'); //only the name we need, not the full path
char* pmsg =
"迅雷看看XV文件提取器 - 版本:1.0\n"
"作者:女孩不哭 编译时间:" __DATE__ " " __TIME__ "\n\n"
"使用方法:\"%s /y 文件\", 输出文件在当前工作目录下\n\n"
"敬告:迅雷XV文件包含受版权保护的内容.\n"
"本程序仅供研究和学习使用, 请自觉将提取的文件立即删除.\n"
"切勿将本程序及其提取的文件使用于任何其它用途.\n"
"对于使用本程序造成的任何后果, 由使用者自行承担法律责任!\n"
"要接受此协议, 请从命令行传入/y作为第1个参数, 文件作为第2个参数.\n";
if(!ptr)
ptr = strrchr(name, '/');
if(!ptr) //the cur dir is just in the exe dir
ptr = name-1;//ptr+1
printf(pmsg, ptr+1);
return;
}
int main(int argc, char** argv)
{
CONSOLE_SCREEN_BUFFER_INFO sbi;
if(argc!=3 || stricmp(argv[1], "/y")) //xve /y file format expected
{
Usage(argv[0]);
return 1;
}
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &sbi);
scrWidth = sbi.dwSize.X; //width, in characters
HandleFile(argv[2]); //enum files if a wild char is detected
printf("处理了 %d 个文件!\n", cntFileProcessed);
return 0;
}
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