private int ensureSpace(int aiType, int aiReqSize)
{
int num = 0;
if (this.m_eDefaultMode == 0)
{
num = (aiReqSize + 4) + 4;
}
else if (this.m_eDefaultMode == 1)
{
int apuValue = 0;
byte[] apcBuffer = new byte[6];
int num3 = TLVUtil.DecodeVByte32(ref apuValue, apcBuffer, 0);
aiType = apuValue;
int num4 = TLVUtil.DecodeVByte32(ref apuValue, apcBuffer, 0);
num = (num3 + num4) + aiReqSize;
}
else
{
return(-8);
}
if ((this.m_pcBuf == null) || (this.m_iUsedSize <= 0))
{
num += this.m_ptHeader.getSize();
}
if ((num < 0) || ((num + this.m_iUsedSize) < 0))
{
return(-3);
}
if (num > (this.m_iAllocSize - this.m_iUsedSize))
{
int num5 = this.m_iAllocSize + 0x400;
while (num5 < (num + this.m_iUsedSize))
{
num5 *= 2;
}
if (num5 < 0)
{
num5 = num + this.m_iUsedSize;
}
byte[] dst = new byte[num5];
bool flag = false;
if ((this.m_pcBuf != null) || (this.m_iUsedSize > 0))
{
Buffer.BlockCopy(this.m_pcBuf, 0, dst, 0, this.m_iUsedSize);
}
else
{
flag = true;
}
this.m_iAllocSize = num5;
this.m_pcBuf = dst;
this.m_ptHeader.h_pcBuf = this.m_pcBuf;
if (flag)
{
this.clear();
}
}
return(0);
}
public static void getIntFrombuf(byte[] srcBuf, ref int srcOffset, ref int dstInt)
{
if (srcOffset < srcBuf.Length)
{
int num = TLVUtil.DecodeVByte32(ref dstInt, srcBuf, srcOffset);
srcOffset += num;
}
}
public override bool MapTo(byte[] apcSrc, int aiSrcSize, int aiOffset)
{
if (((apcSrc == null) || (aiSrcSize <= 0)) || ((aiOffset < 0) || (aiOffset >= aiSrcSize)))
{
return(false);
}
int apuValue = 0;
int num2 = TLVUtil.DecodeVByte32(ref apuValue, apcSrc, aiOffset);
int num3 = apuValue;
int num4 = TLVUtil.DecodeVByte32(ref apuValue, apcSrc, aiOffset + num2);
int num5 = apuValue;
base.pcValPtrOffset = (aiOffset + num2) + num4;
int num6 = ((aiOffset + num2) + num4) + num5;
if (num5 < 0)
{
return(false);
}
if (base.pcValPtrOffset > aiSrcSize)
{
return(false);
}
if (num6 > aiSrcSize)
{
return(false);
}
if (num6 == aiSrcSize)
{
base.iNextOffset = 0;
}
else
{
base.iNextOffset = num6;
}
base.iType = num3;
base.iLength = num5;
base.pcValPtr = apcSrc;
return(true);
}
