public bool isValidTLVPack(byte[] apcBuf, int aiUsedSize, int offset)
{
if (apcBuf != null)
{
if (aiUsedSize < this.m_ptHeader.getSize())
{
return(false);
}
TLVPackHeader header = new TLVPackHeader {
h_pcBuf = apcBuf,
offset = offset
};
if (header.getMagic() != 0x81)
{
return(false);
}
int aiSize = aiUsedSize - header.getSize();
if (header.getUsedSize() != aiSize)
{
return(false);
}
byte[] buffer = TLVUtil.getCheckSum(apcBuf, offset + header.getSize(), aiSize);
byte[] buffer2 = header.getCheckSum();
if ((buffer[0] != buffer2[0]) || (buffer[1] != buffer2[1]))
{
return(false);
}
if (aiSize == 0)
{
return(true);
}
FixedSizeTLVBody body = new FixedSizeTLVBody();
tVariableSizeTLVItem item = new tVariableSizeTLVItem();
TLVBody body2 = null;
if (header.getMode() == 0)
{
body2 = body;
}
else if (header.getMode() == 1)
{
body2 = item;
}
else
{
return(false);
}
if (body2.MapTo(apcBuf, offset + aiUsedSize, offset + header.getSize()))
{
while (body2.iNextOffset != 0)
{
if (!body2.MapTo(apcBuf, offset + aiUsedSize, body2.iNextOffset))
{
return(false);
}
}
return(true);
}
}
return(false);
}
public TLVPack(int aiInitBufSize, int mode)
{
this.m_eDefaultMode = mode;
this.m_pcBuf = null;
this.m_iAllocSize = 0;
this.m_iUsedSize = 0;
this.m_ptHeader = new TLVPackHeader();
}
private void clear()
{
if (this.m_pcBuf == null)
{
this.m_iAllocSize = 0;
this.m_iUsedSize = 0;
this.m_ptHeader = null;
}
else if (this.m_iAllocSize < this.m_ptHeader.getSize())
{
this.m_ptHeader = null;
this.m_iUsedSize = 0;
}
else
{
TLVUtil.fillByteArray(this.m_pcBuf, 0);
this.m_iUsedSize = this.m_ptHeader.getSize();
this.m_ptHeader.h_pcBuf = this.m_pcBuf;
this.m_ptHeader.offset = 0;
this.m_ptHeader.setMagic(0x81).setCheckSum(new byte[2]).setUsedSize(0).setMode((byte)this.m_eDefaultMode);
}
}
