public SigFormatOffset GetSigFormatOffset(uint i)
{
SigFormatOffset sfo = null;
if (i < usNumSigs)
{
sfo = new SigFormatOffset();
uint offset = 8 + i * 12;
sfo.ulFormat = m_bufTable.GetUint(offset);
sfo.ulLength = m_bufTable.GetUint(offset + 4);
sfo.ulOffset = m_bufTable.GetUint(offset + 8);
}
return(sfo);
}
public SignatureBlock GetSignatureBlock(uint i)
{
SignatureBlock sb = null;
if (i < usNumSigs)
{
SigFormatOffset sfo = GetSigFormatOffset(i);
sb = new SignatureBlock();
sb.usReserved1 = m_bufTable.GetUshort(sfo.ulOffset);
sb.usReserved2 = m_bufTable.GetUshort(sfo.ulOffset + 2);
sb.cbSignature = m_bufTable.GetUint(sfo.ulOffset + 4);
sb.bSignature = new byte[sb.cbSignature];
System.Buffer.BlockCopy(m_bufTable.GetBuffer(), (int)sfo.ulOffset + 8, sb.bSignature, 0, (int)sb.cbSignature);
}
return(sb);
}
public SigFormatOffset GetSigFormatOffset(uint i)
{
SigFormatOffset sfo = null;
if (i < usNumSigs)
{
sfo = new SigFormatOffset();
uint offset = 8 + i * 12;
sfo.ulFormat = m_bufTable.GetUint(offset);
sfo.ulLength = m_bufTable.GetUint(offset + 4);
sfo.ulOffset = m_bufTable.GetUint(offset + 8);
}
return sfo;
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.DSIG_Formats))
{
bool bFormatsOk = true;
for (uint i = 0; i < usNumSigs; i++)
{
SigFormatOffset sfo = GetSigFormatOffset(i);
if (sfo.ulFormat != 1)
{
v.Error(T.DSIG_Formats, E.DSIG_E_Formats, m_tag, "block " + i + ", format = " + sfo.ulFormat);
bFormatsOk = false;
bRet = false;
}
}
if (bFormatsOk)
{
v.Pass(T.DSIG_Formats, P.DSIG_P_Formats, m_tag);
}
}
if (v.PerformTest(T.DSIG_Reserved))
{
bool bReservedOk = true;
for (uint i = 0; i < usNumSigs; i++)
{
SignatureBlock sb = GetSignatureBlock(i);
if (sb.usReserved1 != 0 || sb.usReserved2 != 0)
{
v.Error(T.DSIG_Reserved, E.DSIG_E_Reserved, m_tag, "block " + i);
bReservedOk = false;
bRet = false;
}
}
if (bReservedOk)
{
v.Pass(T.DSIG_Reserved, P.DSIG_P_Reserved, m_tag);
}
}
if (v.PerformTest(T.DSIG_VerifySignature))
{
OTFile file = fontOwner.GetFile();
System.IO.FileStream fs = file.GetFileStream();
String sFilename = fs.Name;
try {
WinVerifyTrustWrapper wvt = new WinVerifyTrustWrapper();
if (wvt.WinVerifyTrustFile(sFilename))
{
v.Pass(T.DSIG_VerifySignature, P.DSIG_P_VerifySignature, m_tag);
}
else
{
v.Error(T.DSIG_VerifySignature, E.DSIG_E_VerifySignature, m_tag);
bRet = false;
}
}
catch (Exception e)
{
v.Error(T.DSIG_VerifySignature, E.DSIG_E_VerifySignature, m_tag, e.Message);
bRet = false;
}
}
return(bRet);
}
