void CBase64::Decode(const PBYTE pBuffer, DWORD dwBufLen)
{
if(!CBase64::m_Init)
_Init();
SetEncodeBuffer(pBuffer, dwBufLen);
AllocDecode(dwBufLen);
TempBucket Raw;
DWORD nIndex = 0;
while((nIndex + 4) <= m_nEDataLen)
{
Raw.Clear();
Raw.nData[0] = CBase64::m_DecodeTable[m_pEBuffer[nIndex]];
Raw.nData[1] = CBase64::m_DecodeTable[m_pEBuffer[nIndex + 1]];
Raw.nData[2] = CBase64::m_DecodeTable[m_pEBuffer[nIndex + 2]];
Raw.nData[3] = CBase64::m_DecodeTable[m_pEBuffer[nIndex + 3]];
if(Raw.nData[2] == 255)
Raw.nData[2] = 0;
if(Raw.nData[3] == 255)
Raw.nData[3] = 0;
Raw.nSize = 4;
_DecodeToBuffer(Raw, m_pDBuffer + m_nDDataLen);
nIndex += 4;
m_nDDataLen += 3;
}
// If nIndex < m_nEDataLen, then we got a decode message without padding.
// We may want to throw some kind of warning here, but we are still required
// to handle the decoding as if it was properly padded.
if(nIndex < m_nEDataLen)
{
Raw.Clear();
for(DWORD i = nIndex; i < m_nEDataLen; i++)
{
Raw.nData[i - nIndex] = CBase64::m_DecodeTable[m_pEBuffer[i]];
Raw.nSize++;
if(Raw.nData[i - nIndex] == 255)
Raw.nData[i - nIndex] = 0;
}
_DecodeToBuffer(Raw, m_pDBuffer + m_nDDataLen);
m_nDDataLen += (m_nEDataLen - nIndex);
}
}
void CBase64::Decode(const PBYTE pBuffer, DWORD dwBufLen)
{
if (!CBase64::m_Init) _Init();
SetEncodeBuffer(pBuffer, dwBufLen);
AllocDecode(dwBufLen);
TempBucket Raw;
DWORD nIndex = 0;
while((nIndex + 4) <= m_nEDataLen)
{
Raw.Clear();
Raw.nData[0] =
CBase64::m_DecodeTable[m_pEBuffer[nIndex]];
Raw.nData[1] = CBase64::m_DecodeTable[m_pEBuffer[nIndex + 1]];
Raw.nData[2] = CBase64::m_DecodeTable[m_pEBuffer[nIndex + 2]];
Raw.nData[3] = CBase64::m_DecodeTable[m_pEBuffer[nIndex + 3]];
if (Raw.nData[2] == 255) Raw.nData[2] = 0;
if (Raw.nData[3] == 255) Raw.nData[3] = 0;
Raw.nSize = 4;
_DecodeToBuffer(Raw, m_pDBuffer + m_nDDataLen);
nIndex += 4;
m_nDDataLen += 3;
}
if (nIndex < m_nEDataLen)
{
Raw.Clear();
for (DWORD i=nIndex; i<m_nEDataLen; i++)
{
Raw.nData[i - nIndex] =
CBase64::m_DecodeTable[m_pEBuffer[i]];
Raw.nSize++;
if(Raw.nData[i - nIndex] == 255)
Raw.nData[i - nIndex] = 0;
}
_DecodeToBuffer(Raw, m_pDBuffer + m_nDDataLen);
m_nDDataLen += (m_nEDataLen - nIndex);
}
}
void CBase64::SetDecodeBuffer(const PBYTE pBuffer, DWORD nBufLen)
{
AllocDecode(nBufLen);
memcpy(m_pDBuffer, pBuffer, nBufLen);
m_nDDataLen = nBufLen;
}
void CBase64::SetDecodeBuffer(const unsigned char* pBuffer, unsigned long nBufLen)
{
AllocDecode(nBufLen);
::CopyMemory(m_pDBuffer, pBuffer, nBufLen);
m_nDDataLen = nBufLen;
}