00003 不思议迷宫.0010.2：project.manifest自动生成器
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00003不思议迷宫.0010.2：project.manifest自动生成器
每次修改完代码，在安装到手机之前，老是手动执行如下操作：
l 在VS中以二进制方式打开luac文件，去除BOM头
l 找到修改的luac文件，将之拖动到MD5工具
l 从md5工具中，复制md5的值
l 将md5值拷贝到文本文件中进行比较，然后拷贝第x位到第y位的值
l 打开project.manifest，找到luac文件对应的项目，复制第x位到第y位的值
l 回到md5工具，查看luac文件的size
l 再回到project.manifest，修改size。
每次更新，修改的往往不仅一个文件，这就痛苦了。作为一个懒惰的人，我只想点个鼠标就统统搞定一切。这次，让我来一劳永逸地解决这个问题。
project.manifest是个ANSI编码的文本文件，里面有固定的内容和需要动态生成的md5内容。随着游戏版本的不同，固定内容可能会有所不同；所以，固定内容不能在生成器程序中写死，我们用模版文件，比如：
固定内容1；动态md5内容；固定内容2。
生成器读取到模版内容，自动生成md5内容后，将“动态md5内容；”替换为真实的内容，然后写回到project.manifest。
自动生成md5内容也没什么难的，就是枚举目录和文件，获得相对路径，然后计算md5值，取其中的一个特定子串，并获得大小，一起组合为一个json字符串。
计算文件md5值的代码，网上有现成的。我找的这个是C写的，虽然看得不大懂，但好在能用。
运行，发现非常慢。这也就算了，关键是计算出来的值和其他工具计算出来的不一样，真是蛋疼。又从网上找了一个，这回对了：
//Magicinitialization constants
#defineMD5_INIT_STATE_0 0x67452301
#defineMD5_INIT_STATE_1 0xefcdab89
#defineMD5_INIT_STATE_2 0x98badcfe
#defineMD5_INIT_STATE_3 0x10325476
//Constants forTransform routine.
#defineMD5_S11 7
#define MD5_S1212
#define MD5_S1317
#define MD5_S1422
#defineMD5_S21 5
#defineMD5_S22 9
#define MD5_S2314
#define MD5_S2420
#defineMD5_S31 4
#define MD5_S3211
#define MD5_S3316
#define MD5_S3423
#defineMD5_S41 6
#define MD5_S4210
#define MD5_S4315
#define MD5_S4421
//TransformationConstants - Round 1
#defineMD5_T01 0xd76aa478 //TransformationConstant 1
#defineMD5_T02 0xe8c7b756 //Transformation Constant 2
#defineMD5_T03 0x242070db //TransformationConstant 3
#defineMD5_T04 0xc1bdceee //TransformationConstant 4
#defineMD5_T05 0xf57c0faf //Transformation Constant 5
#defineMD5_T06 0x4787c62a//Transformation Constant 6
#defineMD5_T07 0xa8304613 //TransformationConstant 7
#defineMD5_T08 0xfd469501 //TransformationConstant 8
#defineMD5_T09 0x698098d8 //TransformationConstant 9
#defineMD5_T10 0x8b44f7af //Transformation Constant 10
#defineMD5_T11 0xffff5bb1 //TransformationConstant 11
#defineMD5_T12 0x895cd7be //TransformationConstant 12
#defineMD5_T13 0x6b901122 //TransformationConstant 13
#defineMD5_T14 0xfd987193 //TransformationConstant 14
#defineMD5_T15 0xa679438e //TransformationConstant 15
#defineMD5_T16 0x49b40821 //TransformationConstant 16
//TransformationConstants - Round 2
#defineMD5_T17 0xf61e2562 //TransformationConstant 17
#defineMD5_T18 0xc040b340 //TransformationConstant 18
#defineMD5_T19 0x265e5a51 //Transformation Constant 19
#defineMD5_T20 0xe9b6c7aa //Transformation Constant 20
#defineMD5_T21 0xd62f105d //Transformation Constant 21
#defineMD5_T22 0x02441453 //TransformationConstant 22
#defineMD5_T23 0xd8a1e681 //Transformation Constant 23
#defineMD5_T24 0xe7d3fbc8 //TransformationConstant 24
#defineMD5_T25 0x21e1cde6 //TransformationConstant 25
#defineMD5_T26 0xc33707d6 //TransformationConstant 26
#defineMD5_T27 0xf4d50d87 //TransformationConstant 27
#defineMD5_T28 0x455a14ed //Transformation Constant 28
#defineMD5_T29 0xa9e3e905 //TransformationConstant 29
#defineMD5_T30 0xfcefa3f8 //Transformation Constant 30
#defineMD5_T31 0x676f02d9 //Transformation Constant 31
#defineMD5_T32 0x8d2a4c8a //Transformation Constant 32
//TransformationConstants - Round 3
#defineMD5_T33 0xfffa3942 //TransformationConstant 33
#defineMD5_T34 0x8771f681 //Transformation Constant 34
#defineMD5_T35 0x6d9d6122 //TransformationConstant 35
#defineMD5_T36 0xfde5380c //Transformation Constant 36
#defineMD5_T37 0xa4beea44 //TransformationConstant 37
#defineMD5_T38 0x4bdecfa9 //Transformation Constant38
#defineMD5_T39 0xf6bb4b60 //TransformationConstant 39
#defineMD5_T40 0xbebfbc70 //TransformationConstant 40
#defineMD5_T41 0x289b7ec6 //TransformationConstant 41
#defineMD5_T42 0xeaa127fa //TransformationConstant 42
#defineMD5_T43 0xd4ef3085 //TransformationConstant 43
#defineMD5_T44 0x04881d05 //TransformationConstant 44
#defineMD5_T45 0xd9d4d039 //TransformationConstant 45
#defineMD5_T46 0xe6db99e5 //TransformationConstant 46
#defineMD5_T47 0x1fa27cf8 //TransformationConstant 47
#defineMD5_T48 0xc4ac5665 //Transformation Constant 48
//TransformationConstants - Round 4
#defineMD5_T49 0xf4292244 //TransformationConstant 49
#defineMD5_T50 0x432aff97 //TransformationConstant 50
#defineMD5_T51 0xab9423a7 //Transformation Constant 51
#defineMD5_T52 0xfc93a039 //Transformation Constant 52
#defineMD5_T53 0x655b59c3 //Transformation Constant 53
#defineMD5_T54 0x8f0ccc92 //Transformation Constant 54
#defineMD5_T55 0xffeff47d //Transformation Constant55
#defineMD5_T56 0x85845dd1 //TransformationConstant 56
#defineMD5_T57 0x6fa87e4f //Transformation Constant 57
#defineMD5_T58 0xfe2ce6e0 //TransformationConstant 58
#defineMD5_T59 0xa3014314 //TransformationConstant 59
#defineMD5_T60 0x4e0811a1 //Transformation Constant 60
#defineMD5_T61 0xf7537e82 //TransformationConstant 61
#defineMD5_T62 0xbd3af235 //TransformationConstant 62
#defineMD5_T63 0x2ad7d2bb //TransformationConstant 63
#defineMD5_T64 0xeb86d391 //Transformation Constant64
//Null data(except for first BYTE) used to finalise the checksum calculation
static unsignedchar PADDING[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0, 0, 0
};
CMD5Checksum.h
#if!defined(AFX_MD5CHECKSUM_H__2BC7928E_4C15_11D3_B2EE_A4A60E20D2C3__INCLUDED_)
#defineAFX_MD5CHECKSUM_H__2BC7928E_4C15_11D3_B2EE_A4A60E20D2C3__INCLUDED_
#if _MSC_VER> 1000
#pragma once
#endif //_MSC_VER > 1000
/*****************************************************************************************
*****************************************************************************************/
classCMD5Checksum
{
public:
static CString GetMD5OfString(CStringstrString);
//interface functions for the RSA MD5calculation
static CString GetMD5(const CString&strFilePath);
protected:
//constructor/destructor
CMD5Checksum();
virtual ~CMD5Checksum() {};
//RSA MD5 implementation
void Transform(BYTE Block[64]);
void Update(BYTE* Input, ULONG nInputLen);
CString Final();
inline DWORD RotateLeft(DWORD x, int n);
inline void FF( DWORD& A, DWORD B, DWORDC, DWORD D, DWORD X, DWORD S, DWORD T);
inline void GG( DWORD& A, DWORD B, DWORDC, DWORD D, DWORD X, DWORD S, DWORD T);
inline void HH( DWORD& A, DWORD B, DWORDC, DWORD D, DWORD X, DWORD S, DWORD T);
inline void II( DWORD& A, DWORD B, DWORDC, DWORD D, DWORD X, DWORD S, DWORD T);
//utility functions
inline void DWordToByte(BYTE* Output, DWORD*Input, UINT nLength);
inline void ByteToDWord(DWORD* Output, BYTE*Input, UINT nLength);
private:
BYTE m_lpszBuffer[64]; //input buffer
ULONG m_nCount[2]; //number of bits, modulo 2^64 (lsb first)
ULONG m_lMD5[4]; //MD5 checksum
};
#endif //!defined(AFX_MD5CHECKSUM_H__2BC7928E_4C15_11D3_B2EE_A4A60E20D2C3__INCLUDED_)
MD5Checksum.cpp
#include"stdafx.h"
#include"MD5Checksum.h"
#include"MD5ChecksumDefines.h"
#ifdef _DEBUG
#undef THIS_FILE
static charTHIS_FILE[]=__FILE__;
#define newDEBUG_NEW
#endif
/*****************************************************************************************
*****************************************************************************************/
CStringCMD5Checksum::GetMD5(const CString& strFilePath)
{
try
{
CFile file;
if(file.Open(strFilePath,CFile::modeRead)==0)
return _T("");
CMD5Checksum MD5Checksum; //checksum object
int nLength = 0; //number of bytes read from the file
const int nBufferSize = 1024;//checksum the file in blocks of 1024 bytes
BYTE Buffer[nBufferSize]; //buffer for data read from the file
//checksum the file in blocks of1024 bytes
while ((nLength = file.Read(Buffer, nBufferSize )) > 0 )
{
MD5Checksum.Update( Buffer,nLength );
}
file.Close();
//finalise the checksum and returnit
return MD5Checksum.Final();
}
//report any file exceptions in debugmode only
catch (CFileException* e )
{
TRACE0("CMD5Checksum::GetMD5:CFileException caught");
throw e;
}
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::RotateLeft
DETAILS: private
DESCRIPTION:Rotates the bits in a 32 bit DWORD left by a specified amount
RETURNS: The rotated DWORD
ARGUMENTS: DWORD x : the value to be rotated
int n : the number of bits to rotate by
*****************************************************************************************/
DWORDCMD5Checksum::RotateLeft(DWORD x, int n)
{
//check that DWORD is 4 bytes long - truein Visual C++ 6 and 32 bit Windows
ASSERT( sizeof(x) == 4 );
//rotate and return x
return (x << n) | (x >>(32-n));
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::FF
DETAILS: protected
DESCRIPTION:Implementation of basic MD5 transformation algorithm
RETURNS: none
ARGUMENTS: DWORD &A, B, C, D : Current (partial)checksum
DWORD X : Input data
DWORD S : MD5_SXX Transformation constant
DWORD T : MD5_TXX Transformation constant
NOTES: None
*****************************************************************************************/
voidCMD5Checksum::FF( DWORD& A, DWORD B, DWORD C, DWORD D, DWORD X, DWORD S,DWORD T)
{
DWORD F = (B & C) | (~B & D);
A += F + X + T;
A = RotateLeft(A, S);
A += B;
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::GG
DETAILS: protected
DESCRIPTION:Implementation of basic MD5 transformation algorithm
RETURNS: none
ARGUMENTS: DWORD &A, B, C, D : Current (partial)checksum
DWORD X : Input data
DWORD S : MD5_SXX Transformation constant
DWORD T : MD5_TXX Transformation constant
NOTES: None
*****************************************************************************************/
voidCMD5Checksum::GG( DWORD& A, DWORD B, DWORD C, DWORD D, DWORD X, DWORD S,DWORD T)
{
DWORD G = (B & D) | (C & ~D);
A += G + X + T;
A = RotateLeft(A, S);
A += B;
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::HH
DETAILS: protected
DESCRIPTION:Implementation of basic MD5 transformation algorithm
RETURNS: none
ARGUMENTS: DWORD &A, B, C, D : Current (partial)checksum
DWORD X : Input data
DWORD S : MD5_SXX Transformation constant
DWORD T : MD5_TXX Transformation constant
NOTES: None
*****************************************************************************************/
voidCMD5Checksum::HH( DWORD& A, DWORD B, DWORD C, DWORD D, DWORD X, DWORD S,DWORD T)
{
DWORD H = (B ^ C ^ D);
A += H + X + T;
A = RotateLeft(A, S);
A += B;
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::II
DETAILS: protected
DESCRIPTION:Implementation of basic MD5 transformation algorithm
RETURNS: none
ARGUMENTS: DWORD &A, B, C, D : Current (partial)checksum
DWORD X : Input data
DWORD S : MD5_SXX Transformation constant
DWORD T : MD5_TXX Transformation constant
NOTES: None
*****************************************************************************************/
voidCMD5Checksum::II( DWORD& A, DWORD B, DWORD C, DWORD D, DWORD X, DWORD S,DWORD T)
{
DWORD I = (C ^ (B | ~D));
A += I + X + T;
A = RotateLeft(A, S);
A += B;
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::ByteToDWord
DETAILS: private
DESCRIPTION:Transfers the data in an 8 bit array to a 32 bit array
RETURNS: void
ARGUMENTS: DWORD* Output : the 32 bit (unsigned long)destination array
BYTE* Input : the 8 bit (unsigned char) source array
UINTnLength : the number of 8 bit data itemsin the source array
NOTES: Four BYTES from the input array aretransferred to each DWORD entry
of the outputarray. The first BYTE is transferred to the bits (0-7)
of the outputDWORD, the second BYTE to bits 8-15 etc.
The algorithmassumes that the input array is a multiple of 4 bytes long
so that there isa perfect fit into the array of 32 bit words.
*****************************************************************************************/
voidCMD5Checksum::ByteToDWord(DWORD* Output, BYTE* Input, UINT nLength)
{
//entry invariants
ASSERT( nLength % 4 == 0 );
ASSERT( AfxIsValidAddress(Output,nLength/4, TRUE) );
ASSERT( AfxIsValidAddress(Input, nLength,FALSE) );
//initialisations
UINT i=0; //index to Output array
UINT j=0; //index to Input array
//transfer the data by shifting andcopying
for ( ; j < nLength; i++, j += 4)
{
Output[i] = (ULONG)Input[j] |
(ULONG)Input[j+1] <<8 |
(ULONG)Input[j+2] <<16 |
(ULONG)Input[j+3] <<24;
}
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::Transform
DETAILS: protected
DESCRIPTION: MD5basic transformation algorithm; transforms 'm_lMD5'
RETURNS: void
ARGUMENTS: BYTE Block[64]
NOTES: An MD5 checksum is calculated by four roundsof 'Transformation'.
The MD5 checksumcurrently held in m_lMD5 is merged by the
transformationprocess with data passed in 'Block'.
*****************************************************************************************/
voidCMD5Checksum::Transform(BYTE Block[64])
{
//initialise local data with currentchecksum
ULONG a = m_lMD5[0];
ULONG b = m_lMD5[1];
ULONG c = m_lMD5[2];
ULONG d = m_lMD5[3];
//copy BYTES from input 'Block' to anarray of ULONGS 'X'
ULONG X[16];
ByteToDWord( X, Block, 64 );
//Perform Round 1 of the transformation
FF (a, b, c, d, X[ 0], MD5_S11, MD5_T01);
FF (d, a, b, c, X[ 1], MD5_S12, MD5_T02);
FF (c, d, a, b, X[ 2], MD5_S13, MD5_T03);
FF (b, c, d, a, X[ 3], MD5_S14, MD5_T04);
FF (a, b, c, d, X[ 4], MD5_S11, MD5_T05);
FF (d, a, b, c, X[ 5], MD5_S12, MD5_T06);
FF (c, d, a, b, X[ 6], MD5_S13, MD5_T07);
FF (b, c, d, a, X[ 7], MD5_S14, MD5_T08);
FF (a, b, c, d, X[ 8], MD5_S11, MD5_T09);
FF (d, a, b, c, X[ 9], MD5_S12, MD5_T10);
FF (c, d, a, b, X[10], MD5_S13, MD5_T11);
FF (b, c, d, a, X[11], MD5_S14, MD5_T12);
FF (a, b, c, d, X[12], MD5_S11, MD5_T13);
FF (d, a, b, c, X[13], MD5_S12, MD5_T14);
FF (c, d, a, b, X[14], MD5_S13, MD5_T15);
FF (b, c, d, a, X[15], MD5_S14, MD5_T16);
//Perform Round 2 of the transformation
GG (a, b, c, d, X[ 1], MD5_S21, MD5_T17);
GG (d, a, b, c, X[ 6], MD5_S22, MD5_T18);
GG (c, d, a, b, X[11], MD5_S23, MD5_T19);
GG (b, c, d, a, X[ 0], MD5_S24, MD5_T20);
GG (a, b, c, d, X[ 5], MD5_S21, MD5_T21);
GG (d, a, b, c, X[10], MD5_S22, MD5_T22);
GG (c, d, a, b, X[15], MD5_S23, MD5_T23);
GG (b, c, d, a, X[ 4], MD5_S24, MD5_T24);
GG (a, b, c, d, X[ 9], MD5_S21, MD5_T25);
GG (d, a, b, c, X[14], MD5_S22, MD5_T26);
GG (c, d, a, b, X[ 3], MD5_S23, MD5_T27);
GG (b, c, d, a, X[ 8], MD5_S24, MD5_T28);
GG (a, b, c, d, X[13], MD5_S21, MD5_T29);
GG (d, a, b, c, X[ 2], MD5_S22, MD5_T30);
GG (c, d, a, b, X[ 7], MD5_S23, MD5_T31);
GG (b, c, d, a, X[12], MD5_S24, MD5_T32);
//Perform Round 3 of the transformation
HH (a, b, c, d, X[ 5], MD5_S31, MD5_T33);
HH (d, a, b, c, X[ 8], MD5_S32, MD5_T34);
HH (c, d, a, b, X[11], MD5_S33, MD5_T35);
HH (b, c, d, a, X[14], MD5_S34, MD5_T36);
HH (a, b, c, d, X[ 1], MD5_S31, MD5_T37);
HH (d, a, b, c, X[ 4], MD5_S32, MD5_T38);
HH (c, d, a, b, X[ 7], MD5_S33, MD5_T39);
HH (b, c, d, a, X[10], MD5_S34, MD5_T40);
HH (a, b, c, d, X[13], MD5_S31, MD5_T41);
HH (d, a, b, c, X[ 0], MD5_S32, MD5_T42);
HH (c, d, a, b, X[ 3], MD5_S33, MD5_T43);
HH (b, c, d, a, X[ 6], MD5_S34, MD5_T44);
HH (a, b, c, d, X[ 9], MD5_S31, MD5_T45);
HH (d, a, b, c, X[12], MD5_S32, MD5_T46);
HH (c, d, a, b, X[15], MD5_S33, MD5_T47);
HH (b, c, d, a, X[ 2], MD5_S34, MD5_T48);
//Perform Round 4 of the transformation
II (a, b, c, d, X[ 0], MD5_S41, MD5_T49);
II (d, a, b, c, X[ 7], MD5_S42, MD5_T50);
II (c, d, a, b, X[14], MD5_S43, MD5_T51);
II (b, c, d, a, X[ 5], MD5_S44, MD5_T52);
II (a, b, c, d, X[12], MD5_S41, MD5_T53);
II (d, a, b, c, X[ 3], MD5_S42, MD5_T54);
II (c, d, a, b, X[10], MD5_S43, MD5_T55);
II (b, c, d, a, X[ 1], MD5_S44, MD5_T56);
II (a, b, c, d, X[ 8], MD5_S41, MD5_T57);
II (d, a, b, c, X[15], MD5_S42, MD5_T58);
II (c, d, a, b, X[ 6], MD5_S43, MD5_T59);
II (b, c, d, a, X[13], MD5_S44, MD5_T60);
II (a, b, c, d, X[ 4], MD5_S41, MD5_T61);
II (d, a, b, c, X[11], MD5_S42, MD5_T62);
II (c, d, a, b, X[ 2], MD5_S43, MD5_T63);
II (b, c, d, a, X[ 9], MD5_S44, MD5_T64);
//add the transformed values to thecurrent checksum
m_lMD5[0] += a;
m_lMD5[1] += b;
m_lMD5[2] += c;
m_lMD5[3] += d;
}
/*****************************************************************************************
CONSTRUCTOR:CMD5Checksum
DESCRIPTION:Initialises member data
ARGUMENTS: None
NOTES: None
*****************************************************************************************/
CMD5Checksum::CMD5Checksum()
{
// zero members
memset( m_lpszBuffer, 0, 64 );
m_nCount[0] = m_nCount[1] = 0;
// Load magic state initializationconstants
m_lMD5[0] = MD5_INIT_STATE_0;
m_lMD5[1] = MD5_INIT_STATE_1;
m_lMD5[2] = MD5_INIT_STATE_2;
m_lMD5[3] = MD5_INIT_STATE_3;
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::DWordToByte
DETAILS: private
DESCRIPTION:Transfers the data in an 32 bit array to a 8 bit array
RETURNS: void
ARGUMENTS: BYTE* Output : the 8 bit destination array
DWORD*Input : the 32 bit source array
UINTnLength : the number of 8 bit data itemsin the source array
NOTES: One DWORD from the input array istransferred into four BYTES
in the outputarray. The first (0-7) bits of the first DWORD are
transferred tothe first output BYTE, bits bits 8-15 are transferred from
the second BYTEetc.
The algorithmassumes that the output array is a multiple of 4 bytes long
so that there isa perfect fit of 8 bit BYTES into the 32 bit DWORDs.
*****************************************************************************************/
voidCMD5Checksum::DWordToByte(BYTE* Output, DWORD* Input, UINT nLength )
{
//entry invariants
ASSERT( nLength % 4 == 0 );
ASSERT( AfxIsValidAddress(Output,nLength, TRUE) );
ASSERT( AfxIsValidAddress(Input,nLength/4, FALSE) );
//transfer the data by shifting andcopying
UINT i = 0;
UINT j = 0;
for ( ; j < nLength; i++, j += 4)
{
Output[j] = (UCHAR)(Input[i] & 0xff );
Output[j+1] = (UCHAR)((Input[i]>> 8) & 0xff);
Output[j+2] = (UCHAR)((Input[i]>> 16) & 0xff);
Output[j+3] = (UCHAR)((Input[i]>> 24) & 0xff);
}
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::Final
DETAILS: protected
DESCRIPTION:Implementation of main MD5 checksum algorithm; ends the checksum calculation.
RETURNS: CString : the final hexadecimal MD5 checksumresult
ARGUMENTS: None
NOTES: Performs the final MD5 checksum calculation('Update' does most of the work,
this functionjust finishes the calculation.)
*****************************************************************************************/
CStringCMD5Checksum::Final()
{
//Save number of bits
BYTE Bits[8];
DWordToByte( Bits, m_nCount, 8 );
//Pad out to 56 mod 64.
UINT nIndex = (UINT)((m_nCount[0]>> 3) & 0x3f);
UINT nPadLen = (nIndex < 56) ? (56 -nIndex) : (120 - nIndex);
Update( PADDING, nPadLen );
//Append length (before padding)
Update( Bits, 8 );
//Store final state in 'lpszMD5'
const int nMD5Size = 16;
unsigned char lpszMD5[ nMD5Size ];
DWordToByte( lpszMD5, m_lMD5, nMD5Size );
//Convert the hexadecimal checksum to aCString
CString strMD5;
for ( int i=0; i < nMD5Size; i++)
{
CString Str;
if (lpszMD5[i] == 0)
{
Str =CString("00");
}
else if (lpszMD5[i] <= 15)
{
Str.Format(_T("0%X"),lpszMD5[i]);
}
else
{
Str.Format(_T("%X"),lpszMD5[i]);
}
ASSERT( Str.GetLength() == 2 );
strMD5 += Str;
}
ASSERT( strMD5.GetLength() == 32 );
return strMD5;
}
/*****************************************************************************************
FUNCTION: CMD5Checksum::Update
DETAILS: protected
DESCRIPTION:Implementation of main MD5 checksum algorithm
RETURNS: void
ARGUMENTS: BYTE* Input : input block
UINT nInputLen :length of input block
NOTES: Computes the partial MD5 checksum for 'nInputLen'bytes of data in 'Input'
*****************************************************************************************/
voidCMD5Checksum::Update( BYTE* Input, ULONG nInputLen )
{
//Compute number of bytes mod 64
UINT nIndex = (UINT)((m_nCount[0] >>3) & 0x3F);
//Update number of bits
if ( ( m_nCount[0] += nInputLen <<3 ) < ( nInputLen << 3) )
{
m_nCount[1]++;
}
m_nCount[1] += (nInputLen >> 29);
//Transform as many times as possible.
UINT i=0;
UINT nPartLen = 64 - nIndex;
if (nInputLen >= nPartLen)
{
memcpy( &m_lpszBuffer[nIndex],Input, nPartLen );
Transform( m_lpszBuffer );
for (i = nPartLen; i + 63 <nInputLen; i += 64)
{
Transform( &Input[i] );
}
nIndex = 0;
}
else
{
i = 0;
}
// Buffer remaining input
memcpy( &m_lpszBuffer[nIndex],&Input[i], nInputLen-i);
}
CStringCMD5Checksum::GetMD5OfString(CString strString)
{
try
{
CMD5Checksum MD5Checksum; //checksum object
int nLength =strString.GetLength(); //number ofbytes read from the file
//const int nBufferSize = 1024;//checksum the file in blocks of 1024 bytes
BYTE *Buffer; //buffer for data read from the file
Buffer=(BYTE*)(strString.GetBuffer(nLength));
//checksum the file in blocks of1024 bytes
//while ((nLength = File.Read(Buffer, nBufferSize )) > 0 )
//{
MD5Checksum.Update( Buffer,nLength );
//}
//finalise the checksum and returnit
return MD5Checksum.Final();
}
//report any file exceptions in debugmode only
catch (CFileException* e )
{
TRACE0("CMD5Checksum::GetMD5:CFileException caught");
throw e;
}
}
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