sydeny-1 Posted 2007年1月29日 10:07 Posted 2007年1月29日 10:07 原由：本人在浩方平台长期开设MOHAA服务器。有一个坏人（可以这么说吧），经常性地用一个很长的中文名字，进入服务器。他一进来，很多客户端都会断线。更为可恶的是，他还ZB。但由于浩方平台的特殊性，MOHAA服务器显示的玩家的IP是局域网IP，不显示真正的公网IP，所以这小子肆无忌惮地破坏服务器。我用了抓包工具，能够显示在线玩家的公网ＩＰ，但不能找到玩家在ＭＯＨＡＡ中的ＩＤ，即ＵＳＥＲＩＤ。无法确定哪个是破坏服务器的人的ＩＰ。ＧＯＯＧＬＥ了好几天，也无法找到ＭＯＨＡＡ ＵＤＰ包的数据结构。 请教：Ｓ－２２兄，ＵＤＰ包中应该有ＵＳＥＲＩＤ吧？哪个字节是？是不是加密了？
=FF=Go Posted 2007年2月9日 14:27 Posted 2007年2月9日 14:27 原由：本人在浩方平台长期开设MOHAA服务器。有一个坏人（可以这么说吧），经常性地用一个很长的中文名字，进入服务器。他一进来，很多客户端都会断线。更为可恶的是，他还ZB。但由于浩方平台的特殊性，MOHAA服务器显示的玩家的IP是局域网IP，不显示真正的公网IP，所以这小子肆无忌惮地破坏服务器。我用了抓包工具，能够显示在线玩家的公网ＩＰ，但不能找到玩家在ＭＯＨＡＡ中的ＩＤ，即ＵＳＥＲＩＤ。无法确定哪个是破坏服务器的人的ＩＰ。ＧＯＯＧＬＥ了好几天，也无法找到ＭＯＨＡＡ ＵＤＰ包的数据结构。 请教：Ｓ－２２兄，ＵＤＰ包中应该有ＵＳＥＲＩＤ吧？哪个字节是？是不是加密了？ mohaa 基于Q3引擎 ，采用 Q3 huffman 压缩算法编码， 给个头文件给你，自己去用吧。 /* ALL the code comes from the Q3fusion project of Andrey Nazarov: http://sourceforge.net/projects/q3fusion/ */ #include <string.h> #define MAX_MSGLEN 0x4000 #define VALUE(a) ((int )(a)) #define NODE(a) ((void *)(a)) #define NODE_START NODE( 1) #define NODE_NONE NODE(256) #define NODE_NEXT NODE(257) #define NOT_REFERENCED 256 #define HUFF_TREE_SIZE 7175 typedef void *tree_t[HUFF_TREE_SIZE]; // // pre-defined frequency counts for all bytes [0..255] // static int huffCounts[256] = { 0x3D1CB, 0x0A0E9, 0x01894, 0x01BC2, 0x00E92, 0x00EA6, 0x017DE, 0x05AF3, 0x08225, 0x01B26, 0x01E9E, 0x025F2, 0x02429, 0x0436B, 0x00F6D, 0x006F2, 0x02060, 0x00644, 0x00636, 0x0067F, 0x0044C, 0x004BD, 0x004D6, 0x0046E, 0x006D5, 0x00423, 0x004DE, 0x0047D, 0x004F9, 0x01186, 0x00AF5, 0x00D90, 0x0553B, 0x00487, 0x00686, 0x0042A, 0x00413, 0x003F4, 0x0041D, 0x0042E, 0x006BE, 0x00378, 0x0049C, 0x00352, 0x003C0, 0x0030C, 0x006D8, 0x00CE0, 0x02986, 0x011A2, 0x016F9, 0x00A7D, 0x0122A, 0x00EFD, 0x0082D, 0x0074B, 0x00A18, 0x0079D, 0x007B4, 0x003AC, 0x0046E, 0x006FC, 0x00686, 0x004B6, 0x01657, 0x017F0, 0x01C36, 0x019FE, 0x00E7E, 0x00ED3, 0x005D4, 0x005F4, 0x008A7, 0x00474, 0x0054B, 0x003CB, 0x00884, 0x004E0, 0x00530, 0x004AB, 0x006EA, 0x00436, 0x004F0, 0x004F2, 0x00490, 0x003C5, 0x00483, 0x004A2, 0x00543, 0x004CC, 0x005F9, 0x00640, 0x00A39, 0x00800, 0x009F2, 0x00CCB, 0x0096A, 0x00E01, 0x009C8, 0x00AF0, 0x00A73, 0x01802, 0x00E4F, 0x00B18, 0x037AD, 0x00C5C, 0x008AD, 0x00697, 0x00C88, 0x00AB3, 0x00DB8, 0x012BC, 0x00FFB, 0x00DBB, 0x014A8, 0x00FB0, 0x01F01, 0x0178F, 0x014F0, 0x00F54, 0x0131C, 0x00E9F, 0x011D6, 0x012C7, 0x016DC, 0x01900, 0x01851, 0x02063, 0x05ACB, 0x01E9E, 0x01BA1, 0x022E7, 0x0153D, 0x01183, 0x00E39, 0x01488, 0x014C0, 0x014D0, 0x014FA, 0x00DA4, 0x0099A, 0x0069E, 0x0071D, 0x00849, 0x0077C, 0x0047D, 0x005EC, 0x00557, 0x004D4, 0x00405, 0x004EA, 0x00450, 0x004DD, 0x003EE, 0x0047D, 0x00401, 0x004D9, 0x003B8, 0x00507, 0x003E5, 0x006B1, 0x003F1, 0x004A3, 0x0036F, 0x0044B, 0x003A1, 0x00436, 0x003B7, 0x00678, 0x003A2, 0x00481, 0x00406, 0x004EE, 0x00426, 0x004BE, 0x00424, 0x00655, 0x003A2, 0x00452, 0x00390, 0x0040A, 0x0037C, 0x00486, 0x003DE, 0x00497, 0x00352, 0x00461, 0x00387, 0x0043F, 0x00398, 0x00478, 0x00420, 0x00D86, 0x008C0, 0x0112D, 0x02F68, 0x01E4E, 0x00541, 0x0051B, 0x00CCE, 0x0079E, 0x00376, 0x003FF, 0x00458, 0x00435, 0x00412, 0x00425, 0x0042F, 0x005CC, 0x003E9, 0x00448, 0x00393, 0x0041C, 0x003E3, 0x0042E, 0x0036C, 0x00457, 0x00353, 0x00423, 0x00325, 0x00458, 0x0039B, 0x0044F, 0x00331, 0x0076B, 0x00750, 0x003D0, 0x00349, 0x00467, 0x003BC, 0x00487, 0x003B6, 0x01E6F, 0x003BA, 0x00509, 0x003A5, 0x00467, 0x00C87, 0x003FC, 0x0039F, 0x0054B, 0x00300, 0x00410, 0x002E9, 0x003B8, 0x00325, 0x00431, 0x002E4, 0x003F5, 0x00325, 0x003F0, 0x0031C, 0x003E4, 0x00421, 0x02CC1, 0x034C0 }; // // static Huffman tree // static tree_t huffTree; // // received from MSG_* code // static int huffBitPos; /* ======================================================================================= HUFFMAN TREE CONSTRUCTION ======================================================================================= */ /* ============ Huff_PrepareTree ============ */ void Huff_PrepareTree( tree_t tree ) { void **node; memset( tree, 0, sizeof( tree_t ) ); // create first node node = &tree[263]; VALUE( tree[0] )++; node[7] = NODE_NONE; tree[2] = node; tree[3] = node; tree[4] = node; tree[261] = node; } /* ============ Huff_GetNode ============ */ void **Huff_GetNode( void **tree ) { void **node; int value; node = tree[262]; if( !node ) { value = VALUE( tree[1] )++; node = &tree[value + 6407]; return node; } tree[262] = node[0]; return node; } /* ============ Huff_Swap ============ */ void Huff_Swap( void **tree1, void **tree2, void **tree3 ) { void **a, **b; a = tree2[2]; if( a ) { if( a[0] == tree2 ) { a[0] = tree3; } else { a[1] = tree3; } } else { tree1[2] = tree3; } b = tree3[2]; if( b ) { if( b[0] == tree3 ) { b[0] = tree2; tree2[2] = b; tree3[2] = a; return; } b[1] = tree2; tree2[2] = b; tree3[2] = a; return; } tree1[2] = tree2; tree2[2] = NULL; tree3[2] = a; } /* ============ Huff_SwapTrees ============ */ void Huff_SwapTrees( void **tree1, void **tree2 ) { void **temp; temp = tree1[3]; tree1[3] = tree2[3]; tree2[3] = temp; temp = tree1[4]; tree1[4] = tree2[4]; tree2[4] = temp; if( tree1[3] == tree1 ) { tree1[3] = tree2; } if( tree2[3] == tree2 ) { tree2[3] = tree1; } temp = tree1[3]; if( temp ) { temp[4] = tree1; } temp = tree2[3]; if( temp ) { temp[4] = tree2; } temp = tree1[4]; if( temp ) { temp[3] = tree1; } temp = tree2[4]; if( temp ) { temp[3] = tree2; } } /* ============ Huff_DeleteNode ============ */ void Huff_DeleteNode( void **tree1, void **tree2 ) { tree2[0] = tree1[262]; tree1[262] = tree2; } /* ============ Huff_IncrementFreq_r ============ */ static void Huff_IncrementFreq_r( void **tree1, void **tree2 ) { void **a, **b; if( !tree2 ) { return; } a = tree2[3]; if( a ) { a = a[6]; if( a == tree2[6] ) { b = tree2[5]; if( b[0] != tree2[2] ) { Huff_Swap( tree1, b[0], tree2 ); } Huff_SwapTrees( b[0], tree2 ); } } a = tree2[4]; if( a && a[6] == tree2[6] ) { b = tree2[5]; b[0] = a; } else { a = tree2[5]; a[0] = 0; Huff_DeleteNode( tree1, tree2[5] ); } VALUE( tree2[6] )++; a = tree2[3]; if( a && a[6] == tree2[6] ) { tree2[5] = a[5]; } else { a = Huff_GetNode( tree1 ); tree2[5] = a; a[0] = tree2; } if( tree2[2] ) { Huff_IncrementFreq_r( tree1, tree2[2] ); if( tree2[4] == tree2[2] ) { Huff_SwapTrees( tree2, tree2[2] ); a = tree2[5]; if( a[0] == tree2 ) { a[0] = tree2[2]; } } } } /* ============ Huff_AddReference Insert 'ch' into the tree or increment it's frequency ============ */ static void Huff_AddReference( void **tree, int ch ) { void **a, **b, **c, **d; int value; ch &= 255; if( tree[ch + 5] ) { Huff_IncrementFreq_r( tree, tree[ch + 5] ); return; // already added } value = VALUE( tree[0] )++; b = &tree[value * 8 + 263]; value = VALUE( tree[0] )++; a = &tree[value * 8 + 263]; a[7] = NODE_NEXT; a[6] = NODE_START; d = tree[3]; a[3] = d[3]; if( a[3] ) { d = a[3]; d[4] = a; d = a[3]; if( d[6] == NODE_START ) { a[5] = d[5]; } else { d = Huff_GetNode( tree ); a[5] = d; d[0] = a; } } else { d = Huff_GetNode( tree ); a[5] = d; d[0] = a; } d = tree[3]; d[3] = a; a[4] = tree[3]; b[7] = NODE( ch ); b[6] = NODE_START; d = tree[3]; b[3] = d[3]; if( b[3] ) { d = b[3]; d[4] = b; if( d[6] == NODE_START ) { b[5] = d[5]; } else { d = Huff_GetNode( tree ); b[5] = d; d[0] = a; } } else { d = Huff_GetNode( tree ); b[5] = d; d[0] = b; } d = tree[3]; d[3] = b; b[4] = tree[3]; b[1] = NULL; b[0] = NULL; d = tree[3]; c = d[2]; if( c ) { if( c[0] == tree[3] ) { c[0] = a; } else { c[1] = a; } } else { tree[2] = a; } a[1] = b; d = tree[3]; a[0] = d; a[2] = d[2]; b[2] = a; d = tree[3]; d[2] = a; tree[ch + 5] = b; Huff_IncrementFreq_r( tree, a[2] ); } /* ======================================================================================= BITSTREAM I/O ======================================================================================= */ /* ============ Huff_EmitBit Put one bit into buffer ============ */ void Huff_EmitBit( int bit, unsigned char *buffer ) { if( !(huffBitPos & 7) ) { buffer[huffBitPos >> 3] = 0; } buffer[huffBitPos >> 3] |= bit << (huffBitPos & 7); huffBitPos++; } /* ============ Huff_GetBit Read one bit from buffer ============ */ int Huff_GetBit( unsigned char *buffer ) { int bit; bit = buffer[huffBitPos >> 3] >> (huffBitPos & 7); huffBitPos++; return (bit & 1); } /* ============ Huff_EmitPathToByte ============ */ void Huff_EmitPathToByte( void **tree, void **subtree, unsigned char *buffer ) { if( tree[2] ) { Huff_EmitPathToByte( tree[2], tree, buffer ); } if( !subtree ) { return; } // // emit tree walking control bits // if( tree[1] == subtree ) { Huff_EmitBit( 1, buffer ); } else { Huff_EmitBit( 0, buffer ); } } /* ============ Huff_GetByteFromTree Get one byte using dynamic or static tree ============ */ int Huff_GetByteFromTree( void **tree, unsigned char *buffer ) { if( !tree ) { return 0; } // // walk through the tree until we get a value // while( tree[7] == NODE_NEXT ) { if( !Huff_GetBit( buffer ) ) { tree = tree[0]; } else { tree = tree[1]; } if( !tree ) { return 0; } } return VALUE( tree[7] ); } /* ============ Huff_EmitByteDynamic Emit one byte using dynamic tree ============ */ static void Huff_EmitByteDynamic( void **tree, int value, unsigned char *buffer ) { void **subtree; int i; // // if byte was already referenced, emit path to it // subtree = tree[value + 5]; if( subtree ) { if( subtree[2] ) { Huff_EmitPathToByte( subtree[2], subtree, buffer ); } return; } // // byte was not referenced, just emit 8 bits // Huff_EmitByteDynamic( tree, NOT_REFERENCED, buffer ); for( i=7; i>=0; i-- ) { Huff_EmitBit( (value >> i) & 1, buffer ); } } /* ======================================================================================= PUBLIC INTERFACE ======================================================================================= */ /* ============ Huff_CompressPacket Compress message using dynamic Huffman tree, beginning from specified offset ============ */ int Huff_CompressPacket( unsigned char *msg, int offset, int cursize ) { tree_t tree; unsigned char buffer[MAX_MSGLEN]; unsigned char *data; int outLen; int inLen; int i; data = msg + offset; inLen = cursize - offset; if( inLen <= 0 || inLen >= MAX_MSGLEN ) { return(cursize); } Huff_PrepareTree( tree ); buffer[0] = inLen >> 8; buffer[1] = inLen & 0xFF; huffBitPos = 16; for( i=0; i<inLen; i++ ) { Huff_EmitByteDynamic( tree, data[i], buffer ); Huff_AddReference( tree, data[i] ); } outLen = (huffBitPos >> 3) + 1; memcpy( data, buffer, outLen ); return(offset + outLen); } /* ============ Huff_DecompressPacket Decompress message using dynamic Huffman tree, beginning from specified offset ============ */ int Huff_DecompressPacket( unsigned char *msg, int offset, int cursize, int maxsize ) { tree_t tree; unsigned char buffer[MAX_MSGLEN]; unsigned char *data; int outLen; int inLen; int i, j; int ch; data = msg + offset; inLen = cursize - offset; if( inLen <= 0 ) { return(cursize); } Huff_PrepareTree( tree ); outLen = (data[0] << 8) + data[1]; huffBitPos = 16; if( outLen > maxsize - offset ) { outLen = maxsize - offset; } for( i=0; i<outLen; i++ ) { if( (huffBitPos >> 3) > inLen ) { buffer[i] = 0; break; } ch = Huff_GetByteFromTree( tree[2], data ); if( ch == NOT_REFERENCED ) { ch = 0; // just read 8 bits for( j=0; j<8; j++ ) { ch <<= 1; ch |= Huff_GetBit( data ); } } buffer[i] = ch; Huff_AddReference( tree, ch ); } memcpy( data, buffer, outLen ); return(offset + outLen); } /* ============ Huff_EmitByte ============ */ void Huff_EmitByte( int ch, unsigned char *buffer, int *count ) { huffBitPos = *count; Huff_EmitPathToByte( huffTree[ch + 5], NULL, buffer ); *count = huffBitPos; } /* ============ Huff_GetByte ============ */ int Huff_GetByte( unsigned char *buffer, int *count ) { int ch; huffBitPos = *count; ch = Huff_GetByteFromTree( huffTree[2], buffer ); *count = huffBitPos; return ch; } /* ============ Huff_Init ============ */ void Huff_Init( void ) { int i, j; // build empty tree Huff_PrepareTree( huffTree ); // add all pre-defined byte references for( i=0; i<256; i++ ) { for( j=0; j<huffCounts[i]; j++ ) { Huff_AddReference( huffTree, i ); } } }
S-22 Posted 2007年2月11日 09:20 Posted 2007年2月11日 09:20 status 能否显示 user id？可以用一些管理工具譬如 ASE/GameSpy/AutoKick 等来获得信息。
=FF=Go Posted 2007年2月15日 05:49 Posted 2007年2月15日 05:49 status 能否显示 user id？可以用一些管理工具譬如 ASE/GameSpy/AutoKick 等来获得信息。 他是想同过嗅探得到真实ip和id的对应. mohaa应该看到的是被浩方封装过的伪ip
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