WSHCommon/Common/CommonUI_Unity3D/Platform/iOS/MFMD5.cpp

/*
* RFC 1321 compliant MD5 implementation,
* by Christophe Devine <devine@cr0.net>;
* this program is licensed under the GPL.
*/
#include "MFMD5.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

namespace mf
{


#define GET_UINT32(n,b,i)                                     \
{                                                             \
	(n) = (uint32) ((uint8 *) b)[(i)]                         \
	| (((uint32) ((uint8 *) b)[(i)+1]) <<  8)                 \
	| (((uint32) ((uint8 *) b)[(i)+2]) << 16)                 \
	| (((uint32) ((uint8 *) b)[(i)+3]) << 24);                \
}

#define PUT_UINT32(n,b,i)										\
{                                                               \
	(((uint8 *) b)[(i)]  ) = (uint8) (((n)      ) & 0xFF);      \
	(((uint8 *) b)[(i)+1]) = (uint8) (((n) >>  8) & 0xFF);      \
	(((uint8 *) b)[(i)+2]) = (uint8) (((n) >> 16) & 0xFF);      \
	(((uint8 *) b)[(i)+3]) = (uint8) (((n) >> 24) & 0xFF);      \
}


#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))

#define P(a,b,c,d,k,s,t)                            \
{                                                   \
	a += F(b,c,d) + X[k] + t; a = S(a,s) + b;       \
}


//extern pthread_mutex_t mutexMemory;

void CMD5::md5_starts( struct md5_context *ctx )
{
	ctx->total[0] = 0;
	ctx->total[1] = 0;
	ctx->state[0] = 0x67452301;
	ctx->state[1] = 0xEFCDAB89;
	ctx->state[2] = 0x98BADCFE;
	ctx->state[3] = 0x10325476;
}

void CMD5::md5_process( struct md5_context *ctx, uint8 data[64] )
{
	uint32 A, B, C, D, X[16];

	GET_UINT32( X[0],  data,  0 );
	GET_UINT32( X[1],  data,  4 );
	GET_UINT32( X[2],  data,  8 );
	GET_UINT32( X[3],  data, 12 );
	GET_UINT32( X[4],  data, 16 );
	GET_UINT32( X[5],  data, 20 );
	GET_UINT32( X[6],  data, 24 );
	GET_UINT32( X[7],  data, 28 );
	GET_UINT32( X[8],  data, 32 );
	GET_UINT32( X[9],  data, 36 );
	GET_UINT32( X[10], data, 40 );
	GET_UINT32( X[11], data, 44 );
	GET_UINT32( X[12], data, 48 );
	GET_UINT32( X[13], data, 52 );
	GET_UINT32( X[14], data, 56 );
	GET_UINT32( X[15], data, 60 );

	A = ctx->state[0];
	B = ctx->state[1];
	C = ctx->state[2];
	D = ctx->state[3];

#define F(x,y,z) (z ^ (x & (y ^ z)))

	P( A, B, C, D,  0,  7, 0xD76AA478 );
	P( D, A, B, C,  1, 12, 0xE8C7B756 );
	P( C, D, A, B,  2, 17, 0x242070DB );
	P( B, C, D, A,  3, 22, 0xC1BDCEEE );
	P( A, B, C, D,  4,  7, 0xF57C0FAF );
	P( D, A, B, C,  5, 12, 0x4787C62A );
	P( C, D, A, B,  6, 17, 0xA8304613 );
	P( B, C, D, A,  7, 22, 0xFD469501 );
	P( A, B, C, D,  8,  7, 0x698098D8 );
	P( D, A, B, C,  9, 12, 0x8B44F7AF );
	P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
	P( B, C, D, A, 11, 22, 0x895CD7BE );
	P( A, B, C, D, 12,  7, 0x6B901122 );
	P( D, A, B, C, 13, 12, 0xFD987193 );
	P( C, D, A, B, 14, 17, 0xA679438E );
	P( B, C, D, A, 15, 22, 0x49B40821 );

#undef F

#define F(x,y,z) (y ^ (z & (x ^ y)))

	P( A, B, C, D,  1,  5, 0xF61E2562 );
	P( D, A, B, C,  6,  9, 0xC040B340 );
	P( C, D, A, B, 11, 14, 0x265E5A51 );
	P( B, C, D, A,  0, 20, 0xE9B6C7AA );
	P( A, B, C, D,  5,  5, 0xD62F105D );
	P( D, A, B, C, 10,  9, 0x02441453 );
	P( C, D, A, B, 15, 14, 0xD8A1E681 );
	P( B, C, D, A,  4, 20, 0xE7D3FBC8 );
	P( A, B, C, D,  9,  5, 0x21E1CDE6 );
	P( D, A, B, C, 14,  9, 0xC33707D6 );
	P( C, D, A, B,  3, 14, 0xF4D50D87 );
	P( B, C, D, A,  8, 20, 0x455A14ED );
	P( A, B, C, D, 13,  5, 0xA9E3E905 );
	P( D, A, B, C,  2,  9, 0xFCEFA3F8 );
	P( C, D, A, B,  7, 14, 0x676F02D9 );
	P( B, C, D, A, 12, 20, 0x8D2A4C8A );

#undef F

#define F(x,y,z) (x ^ y ^ z)

	P( A, B, C, D,  5,  4, 0xFFFA3942 );
	P( D, A, B, C,  8, 11, 0x8771F681 );
	P( C, D, A, B, 11, 16, 0x6D9D6122 );
	P( B, C, D, A, 14, 23, 0xFDE5380C );
	P( A, B, C, D,  1,  4, 0xA4BEEA44 );
	P( D, A, B, C,  4, 11, 0x4BDECFA9 );
	P( C, D, A, B,  7, 16, 0xF6BB4B60 );
	P( B, C, D, A, 10, 23, 0xBEBFBC70 );
	P( A, B, C, D, 13,  4, 0x289B7EC6 );
	P( D, A, B, C,  0, 11, 0xEAA127FA );
	P( C, D, A, B,  3, 16, 0xD4EF3085 );
	P( B, C, D, A,  6, 23, 0x04881D05 );
	P( A, B, C, D,  9,  4, 0xD9D4D039 );
	P( D, A, B, C, 12, 11, 0xE6DB99E5 );
	P( C, D, A, B, 15, 16, 0x1FA27CF8 );
	P( B, C, D, A,  2, 23, 0xC4AC5665 );

#undef F

#define F(x,y,z) (y ^ (x | ~z))

	P( A, B, C, D,  0,  6, 0xF4292244 );
	P( D, A, B, C,  7, 10, 0x432AFF97 );
	P( C, D, A, B, 14, 15, 0xAB9423A7 );
	P( B, C, D, A,  5, 21, 0xFC93A039 );
	P( A, B, C, D, 12,  6, 0x655B59C3 );
	P( D, A, B, C,  3, 10, 0x8F0CCC92 );
	P( C, D, A, B, 10, 15, 0xFFEFF47D );
	P( B, C, D, A,  1, 21, 0x85845DD1 );
	P( A, B, C, D,  8,  6, 0x6FA87E4F );
	P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
	P( C, D, A, B,  6, 15, 0xA3014314 );
	P( B, C, D, A, 13, 21, 0x4E0811A1 );
	P( A, B, C, D,  4,  6, 0xF7537E82 );
	P( D, A, B, C, 11, 10, 0xBD3AF235 );
	P( C, D, A, B,  2, 15, 0x2AD7D2BB );
	P( B, C, D, A,  9, 21, 0xEB86D391 );

#undef F

	ctx->state[0] += A;
	ctx->state[1] += B;
	ctx->state[2] += C;
	ctx->state[3] += D;
}

void CMD5::md5_update( struct md5_context *ctx, uint8 *input, uint32 length )
{
	uint32 left, fill;

	if( ! length ) return;

	left = ( ctx->total[0] >> 3 ) & 0x3F;
	fill = 64 - left;

	ctx->total[0] += length <<  3;
	ctx->total[1] += length >> 29;

	ctx->total[0] &= 0xFFFFFFFF;
	ctx->total[1] += ctx->total[0] < length << 3;

	if( left && length >= fill )
	{
		memcpy( (void *) (ctx->buffer + left), (void *) input, fill );
		md5_process( ctx, ctx->buffer );
		length -= fill;
		input  += fill;
		left = 0;
	}

	while( length >= 64 )
	{
		md5_process( ctx, input );
		length -= 64;
		input  += 64;
	}

	if( length )
	{
		memcpy( (void *) (ctx->buffer + left), (void *) input, length );
	}
}

static uint8 md5_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
};

void CMD5::md5_finish( struct md5_context *ctx, uint8 digest[16] )
{
	uint32 last, padn;
	uint8 msglen[8];

	PUT_UINT32( ctx->total[0], msglen, 0 );
	PUT_UINT32( ctx->total[1], msglen, 4 );

	last = ( ctx->total[0] >> 3 ) & 0x3F;
	padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );

	md5_update( ctx, md5_padding, padn );
	md5_update( ctx, msglen, 8 );

	PUT_UINT32( ctx->state[0], digest,  0 );
	PUT_UINT32( ctx->state[1], digest,  4 );
	PUT_UINT32( ctx->state[2], digest,  8 );
	PUT_UINT32( ctx->state[3], digest, 12 );
}

void CMD5::GenerateMD5(unsigned char* buffer,int bufferlen)
{
	struct md5_context context;
	md5_starts (&context);
	md5_update (&context, buffer, bufferlen);
	md5_finish (&context,(unsigned char*)m_data);
}

void CMD5::GenerateMD5( const char * src_file )
{
	ifstream inF(src_file, ios::binary);
	if(inF)
	{
        GenerateMD5(inF);
		inF.close();
	}
}

void CMD5::GenerateMD5( ifstream &in )
{
	struct md5_context context;
	md5_starts (&context);

	std::streamsize length;
	char buffer[1024] = {0};
	while (!in.eof()) {
		in.read(buffer, 1024);
		length = in.gcount();
		if (length > 0) {
			md5_update(&context,(uint8 *)(buffer), length);
		}
	}
	md5_finish (&context,(unsigned char*)m_data);
}

CMD5::CMD5()
{
	for(int i=0;i<4;i++)
		m_data[i]=0;
}

CMD5::CMD5(unsigned long* md5src)
{
	memcpy(m_data,md5src,16);
}
int _httoi(const char *value)
{
	struct CHexMap
	{
		char chr;
		int value;
	};
	const int HexMapL = 16;
	CHexMap HexMap[HexMapL] =
	{
		{'0', 0}, {'1', 1},
		{'2', 2}, {'3', 3},
		{'4', 4}, {'5', 5},
		{'6', 6}, {'7', 7},
		{'8', 8}, {'9', 9},
		{'a', 10}, {'b', 11},
		{'c', 12}, {'d', 13},
		{'e', 14}, {'f', 15}
	};
	//pthread_mutex_lock(&mutexMemory);
	char *mstr = strdup(value);
	//pthread_mutex_unlock(&mutexMemory);
	char *s = mstr;
	int result = 0;
	if (*s == '0' && *(s + 1) == 'X') s += 2;
	bool firsttime = true;
	while (*s != '/0')
	{
		bool found = false;
		for (int i = 0; i < HexMapL; i++)
		{
			if (*s == HexMap[i].chr)
			{
				if (!firsttime) result <<= 4;
				result |= HexMap[i].value;
				found = true;
				break;
			}
		}
		if (!found) break;
		s++;
		firsttime = false;
	}
	//pthread_mutex_lock(&mutexMemory);
	free(mstr);
	//pthread_mutex_unlock(&mutexMemory);
	return result;
}


CMD5::CMD5(const char* md5src)
{
	if (strcmp(md5src,"")==0)
	{
		for(int i=0;i<4;i++)
			m_data[i]=0;
		return;
	}
	for(int j = 0; j < 16; j++ )
	{
		char buf[10];
		strncpy(buf,md5src,2);
		md5src+=2;
		((unsigned char*)m_data)[j] = _httoi(buf);
	}
}

CMD5 CMD5::operator +(CMD5 adder)
{
	unsigned long m_newdata[4];
	for(int i=0;i<4;i++)
		m_newdata[i]=m_data[i]^(adder.m_data[i]);
	return CMD5(m_newdata);
}

bool CMD5::operator ==(CMD5 cmper)
{
	return (memcmp(cmper.m_data ,m_data,16)==0);
}

//void CMD5::operator =(CMD5 equer)
//{
//	memcpy(m_data,equer.m_data ,16);
//}

string CMD5::ToString()
{
	char output[33];
	for(int j = 0; j < 16; j++ )
	{
		sprintf( output + j * 2, "%02x", ((unsigned char*)m_data)[j]);
	}
	return string(output);
}

};


bool _Md5_CheckFile(const char * srcFile, unsigned char* dst)
{
	mf::CMD5 md5;
	md5.GenerateMD5(srcFile);
	string outstr = md5.ToString();
	memcpy(dst, outstr.c_str(), 32);
	return true;
}