public Tree(SimpleZip.DeflaterHuffman dh, int elems, int minCodes, int maxLength)
{
this.dh = dh;
this.minNumCodes = minCodes;
this.maxLength = maxLength;
this.freqs = new short[elems];
this.bl_counts = new int[maxLength];
}
public DeflaterEngine(SimpleZip.DeflaterPending pending)
{
this.pending = pending;
this.huffman = new SimpleZip.DeflaterHuffman(pending);
this.window = new byte[0x10000];
this.head = new short[0x8000];
this.prev = new short[0x8000];
this.blockStart = this.strstart = 1;
}
public DeflaterHuffman(SimpleZip.DeflaterPending pending)
{
this.pending = pending;
this.literalTree = new Tree(this, 0x11e, 0x101, 15);
this.distTree = new Tree(this, 30, 1, 15);
this.blTree = new Tree(this, 0x13, 4, 7);
this.d_buf = new short[0x4000];
this.l_buf = new byte[0x4000];
}
public int GetSymbol(SimpleZip.StreamManipulator input)
{
int num2;
int index = input.PeekBits(9);
if (index >= 0)
{
num2 = this.tree[index];
if (num2 >= 0)
{
input.DropBits(num2 & 15);
return (num2 >> 4);
}
int num3 = -(num2 >> 4);
int n = num2 & 15;
index = input.PeekBits(n);
if (index >= 0)
{
num2 = this.tree[num3 | (index >> 9)];
input.DropBits(num2 & 15);
return (num2 >> 4);
}
int num5 = input.AvailableBits;
index = input.PeekBits(num5);
num2 = this.tree[num3 | (index >> 9)];
if ((num2 & 15) <= num5)
{
input.DropBits(num2 & 15);
return (num2 >> 4);
}
return -1;
}
int availableBits = input.AvailableBits;
index = input.PeekBits(availableBits);
num2 = this.tree[index];
if ((num2 >= 0) && ((num2 & 15) <= availableBits))
{
input.DropBits(num2 & 15);
return (num2 >> 4);
}
return -1;
}
public int CopyStored(SimpleZip.StreamManipulator input, int len)
{
int num;
len = Math.Min(Math.Min(len, 0x8000 - this.windowFilled), input.AvailableBytes);
int length = 0x8000 - this.windowEnd;
if (len > length)
{
num = input.CopyBytes(this.window, this.windowEnd, length);
if (num == length)
{
num += input.CopyBytes(this.window, 0, len - length);
}
}
else
{
num = input.CopyBytes(this.window, this.windowEnd, len);
}
this.windowEnd = (this.windowEnd + num) & 0x7fff;
this.windowFilled += num;
return num;
}
public bool Decode(SimpleZip.StreamManipulator input)
{
int num2;
int num3;
Label_0000:
switch (this.mode)
{
case 0:
this.lnum = input.PeekBits(5);
if (this.lnum >= 0)
{
this.lnum += 0x101;
input.DropBits(5);
this.mode = 1;
break;
}
return false;
case 1:
break;
case 2:
goto Label_00B9;
case 3:
goto Label_013B;
case 4:
goto Label_01A8;
case 5:
goto Label_01DE;
default:
goto Label_0000;
}
this.dnum = input.PeekBits(5);
if (this.dnum < 0)
{
return false;
}
this.dnum++;
input.DropBits(5);
this.num = this.lnum + this.dnum;
this.litdistLens = new byte[this.num];
this.mode = 2;
Label_00B9:
this.blnum = input.PeekBits(4);
if (this.blnum < 0)
{
return false;
}
this.blnum += 4;
input.DropBits(4);
this.blLens = new byte[0x13];
this.ptr = 0;
this.mode = 3;
Label_013B:
while (this.ptr < this.blnum)
{
int num = input.PeekBits(3);
if (num < 0)
{
return false;
}
input.DropBits(3);
this.blLens[BL_ORDER[this.ptr]] = (byte) num;
this.ptr++;
}
this.blTree = new SimpleZip.InflaterHuffmanTree(this.blLens);
this.blLens = null;
this.ptr = 0;
this.mode = 4;
Label_01A8:
while (((num2 = this.blTree.GetSymbol(input)) & -16) == 0)
{
this.litdistLens[this.ptr++] = this.lastLen = (byte) num2;
if (this.ptr == this.num)
{
return true;
}
}
if (num2 < 0)
{
return false;
}
if (num2 >= 0x11)
{
this.lastLen = 0;
}
this.repSymbol = num2 - 0x10;
this.mode = 5;
Label_01DE:
num3 = repBits[this.repSymbol];
int num4 = input.PeekBits(num3);
if (num4 < 0)
{
return false;
}
input.DropBits(num3);
num4 += repMin[this.repSymbol];
while (num4-- > 0)
{
this.litdistLens[this.ptr++] = this.lastLen;
}
if (this.ptr == this.num)
{
return true;
}
this.mode = 4;
goto Label_0000;
}
public void WriteTree(SimpleZip.DeflaterHuffman.Tree blTree)
{
int code = -1;
int index = 0;
while (index < this.numCodes)
{
int num;
int num2;
int num3 = 1;
int num6 = this.length[index];
if (num6 == 0)
{
num = 0x8a;
num2 = 3;
}
else
{
num = 6;
num2 = 3;
if (code != num6)
{
blTree.WriteSymbol(num6);
num3 = 0;
}
}
code = num6;
index++;
while ((index < this.numCodes) && (code == this.length[index]))
{
index++;
if (++num3 >= num)
{
break;
}
}
if (num3 < num2)
{
while (num3-- > 0)
{
blTree.WriteSymbol(code);
}
}
else if (code != 0)
{
blTree.WriteSymbol(0x10);
this.dh.pending.WriteBits(num3 - 3, 2);
}
else
{
if (num3 <= 10)
{
blTree.WriteSymbol(0x11);
this.dh.pending.WriteBits(num3 - 3, 3);
continue;
}
blTree.WriteSymbol(0x12);
this.dh.pending.WriteBits(num3 - 11, 7);
}
}
}
public void CalcBLFreq(SimpleZip.DeflaterHuffman.Tree blTree)
{
int index = -1;
int num5 = 0;
while (num5 < this.numCodes)
{
int num;
int num2;
int num3 = 1;
int num6 = this.length[num5];
if (num6 == 0)
{
num = 0x8a;
num2 = 3;
}
else
{
num = 6;
num2 = 3;
if (index != num6)
{
blTree.freqs[num6] = (short) (blTree.freqs[num6] + 1);
num3 = 0;
}
}
index = num6;
num5++;
while ((num5 < this.numCodes) && (index == this.length[num5]))
{
num5++;
if (++num3 >= num)
{
break;
}
}
if (num3 < num2)
{
blTree.freqs[index] = (short) (blTree.freqs[index] + ((short) num3));
}
else
{
if (index != 0)
{
blTree.freqs[0x10] = (short) (blTree.freqs[0x10] + 1);
continue;
}
if (num3 <= 10)
{
blTree.freqs[0x11] = (short) (blTree.freqs[0x11] + 1);
continue;
}
blTree.freqs[0x12] = (short) (blTree.freqs[0x12] + 1);
}
}
}
// Token: 0x060002CA RID: 714 RVA: 0x0002807C File Offset: 0x0002627C
public static byte[] Unzip(byte[] byte_0)
{
Assembly callingAssembly = Assembly.GetCallingAssembly();
Assembly executingAssembly = Assembly.GetExecutingAssembly();
if (callingAssembly != executingAssembly && !SimpleZip.PublicKeysMatch(executingAssembly, callingAssembly))
{
return(null);
}
SimpleZip.ZipStream zipStream = new SimpleZip.ZipStream(byte_0);
byte[] array = new byte[0];
int num = zipStream.ReadInt();
if (num == 67324752)
{
short num2 = (short)zipStream.ReadShort();
int num3 = zipStream.ReadShort();
int num4 = zipStream.ReadShort();
if (num == 67324752 && num2 == 20 && num3 == 0)
{
if (num4 == 8)
{
zipStream.ReadInt();
zipStream.ReadInt();
zipStream.ReadInt();
int num5 = zipStream.ReadInt();
int num6 = zipStream.ReadShort();
int num7 = zipStream.ReadShort();
if (num6 > 0)
{
byte[] buffer = new byte[num6];
zipStream.Read(buffer, 0, num6);
}
if (num7 > 0)
{
byte[] buffer2 = new byte[num7];
zipStream.Read(buffer2, 0, num7);
}
byte[] array2 = new byte[zipStream.Length - zipStream.Position];
zipStream.Read(array2, 0, array2.Length);
SimpleZip.Inflater inflater = new SimpleZip.Inflater(array2);
array = new byte[num5];
inflater.Inflate(array, 0, array.Length);
goto IL_265;
}
}
throw new FormatException("Wrong Header Signature");
}
int num8 = num >> 24;
num -= num8 << 24;
if (num == 8223355)
{
if (num8 == 1)
{
int num9 = zipStream.ReadInt();
array = new byte[num9];
int num11;
for (int i = 0; i < num9; i += num11)
{
int num10 = zipStream.ReadInt();
num11 = zipStream.ReadInt();
byte[] array3 = new byte[num10];
zipStream.Read(array3, 0, array3.Length);
new SimpleZip.Inflater(array3).Inflate(array, i, num11);
}
}
if (num8 == 2)
{
byte[] byte_ = new byte[]
{
72,
196,
226,
220,
77,
90,
77,
41
};
byte[] byte_2 = new byte[]
{
17,
242,
176,
1,
248,
117,
118,
164
};
using (ICryptoTransform desTransform = SimpleZip.GetDesTransform(byte_, byte_2, true))
{
array = SimpleZip.Unzip(desTransform.TransformFinalBlock(byte_0, 4, byte_0.Length - 4));
}
}
if (num8 != 3)
{
goto IL_265;
}
byte[] byte_3 = new byte[]
{
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
};
byte[] byte_4 = new byte[]
{
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2
};
using (ICryptoTransform aesTransform = SimpleZip.GetAesTransform(byte_3, byte_4, true))
{
array = SimpleZip.Unzip(aesTransform.TransformFinalBlock(byte_0, 4, byte_0.Length - 4));
goto IL_265;
}
}
throw new FormatException("Unknown Header");
IL_265:
zipStream.Close();
zipStream = null;
return(array);
}
// Token: 0x06000252 RID: 594 RVA: 0x00012F88 File Offset: 0x00011188
public static byte[] Unzip(byte[] A_0)
{
Assembly callingAssembly = Assembly.GetCallingAssembly();
Assembly executingAssembly = Assembly.GetExecutingAssembly();
if (callingAssembly != executingAssembly && !SimpleZip.PublicKeysMatch(executingAssembly, callingAssembly))
{
return(null);
}
SimpleZip.ZipStream zipStream = new SimpleZip.ZipStream(A_0);
byte[] array = new byte[0];
int num = zipStream.ReadInt();
if (num != 67324752)
{
int num2 = num >> 24;
num -= num2 << 24;
if (num == 8223355)
{
if (num2 == 1)
{
int num3 = zipStream.ReadInt();
array = new byte[num3];
int num5;
for (int i = 0; i < num3; i += num5)
{
int num4 = zipStream.ReadInt();
num5 = zipStream.ReadInt();
byte[] array2 = new byte[num4];
zipStream.Read(array2, 0, array2.Length);
new SimpleZip.Inflater(array2).Inflate(array, i, num5);
}
}
if (num2 == 2)
{
byte[] array3 = new byte[]
{
72,
196,
226,
220,
77,
90,
77,
41
};
byte[] array4 = new byte[]
{
17,
242,
176,
1,
248,
117,
118,
164
};
using (ICryptoTransform desTransform = SimpleZip.GetDesTransform(array3, array4, true))
{
array = SimpleZip.Unzip(desTransform.TransformFinalBlock(A_0, 4, A_0.Length - 4));
}
}
if (num2 != 3)
{
goto IL_287;
}
byte[] array5 = new byte[]
{
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
};
byte[] array6 = new byte[]
{
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2
};
using (ICryptoTransform aesTransform = SimpleZip.GetAesTransform(array5, array6, true))
{
array = SimpleZip.Unzip(aesTransform.TransformFinalBlock(A_0, 4, A_0.Length - 4));
goto IL_287;
}
}
throw new FormatException("Unknown Header");
}
short num6 = (short)zipStream.ReadShort();
int num7 = zipStream.ReadShort();
int num8 = zipStream.ReadShort();
if (num != 67324752 || num6 != 20 || num7 != 0 || num8 != 8)
{
throw new FormatException("Wrong Header Signature");
}
zipStream.ReadInt();
zipStream.ReadInt();
zipStream.ReadInt();
int num9 = zipStream.ReadInt();
int num10 = zipStream.ReadShort();
int num11 = zipStream.ReadShort();
if (num10 > 0)
{
byte[] buffer = new byte[num10];
zipStream.Read(buffer, 0, num10);
}
if (num11 > 0)
{
byte[] buffer2 = new byte[num11];
zipStream.Read(buffer2, 0, num11);
}
byte[] array7 = new byte[zipStream.Length - zipStream.Position];
zipStream.Read(array7, 0, array7.Length);
SimpleZip.Inflater inflater = new SimpleZip.Inflater(array7);
array = new byte[num9];
inflater.Inflate(array, 0, array.Length);
IL_287:
zipStream.Close();
zipStream = null;
return(array);
}
