int CAPETag::SetFieldString(const str_utf16 * pFieldName, const char * pFieldValue, BOOL bAlreadyUTF8Encoded)
{
// remove if empty
if ((pFieldValue == NULL) || (strlen(pFieldValue) <= 0))
return RemoveField(pFieldName);
// get the length and call the binary SetField(...)
if (bAlreadyUTF8Encoded == FALSE)
{
CSmartPtr<char> spUTF8((char *) GetUTF8FromANSI(pFieldValue), TRUE);
int nFieldBytes = strlen(spUTF8.GetPtr());
return SetFieldBinary(pFieldName, spUTF8.GetPtr(), nFieldBytes, TAG_FIELD_FLAG_DATA_TYPE_TEXT_UTF8);
}
else
{
int nFieldBytes = strlen(pFieldValue);
return SetFieldBinary(pFieldName, pFieldValue, nFieldBytes, TAG_FIELD_FLAG_DATA_TYPE_TEXT_UTF8);
}
}
int CAPETag::LoadField(const char * pBuffer, int nMaximumBytes, int * pBytes)
{
// set bytes to 0
if (pBytes) *pBytes = 0;
// size and flags
int nLocation = 0;
char b = pBuffer[nLocation];
//int nFieldValueSize = *((int *) &pBuffer[nLocation]); //Data type misalignment on Wince!!!
int nFieldValueSize = (int)b;
nLocation += 4;
b = pBuffer[nLocation];
int nFieldFlags = (int)b;
nLocation += 4;
// safety check (so we can't get buffer overflow attacked)
BOOL bSafe = FALSE;
int nMaximumRead = nMaximumBytes - 8 - nFieldValueSize;
if (nMaximumRead > 0)
{
bSafe = TRUE;
for (int z = 0; (z < nMaximumRead) && (bSafe == TRUE); z++)
{
int nCharacter = pBuffer[nLocation + z];
if (nCharacter == 0)
break;
if ((nCharacter < 0x20) || (nCharacter > 0x7E))
bSafe = FALSE;
}
}
if (bSafe == FALSE)
return -1;
// name
int nNameCharacters = strlen(&pBuffer[nLocation]);
CSmartPtr<str_utf8> spNameUTF8(new str_utf8 [nNameCharacters + 1], TRUE);
memcpy(spNameUTF8, &pBuffer[nLocation], (nNameCharacters + 1) * sizeof(str_utf8));
nLocation += nNameCharacters + 1;
CSmartPtr<str_utf16> spNameUTF16(CAPECharacterHelper::GetUTF16FromUTF8(spNameUTF8.GetPtr()), TRUE);
// value
CSmartPtr<char> spFieldBuffer(new char [nFieldValueSize], TRUE);
memcpy(spFieldBuffer, &pBuffer[nLocation], nFieldValueSize);
nLocation += nFieldValueSize;
// update the bytes
if (pBytes) *pBytes = nLocation;
// set
return SetFieldBinary(spNameUTF16.GetPtr(), spFieldBuffer, nFieldValueSize, nFieldFlags);
}
