private bool verifychecksum(bool showinterface)
{
//Verify checksums and show result
bool m_checksums_ok = true;
if (File.Exists(m_currentfile))
{
T7FileHeader t7InfoHeader = null;
t7InfoHeader = new T7FileHeader();
t7InfoHeader.init(m_currentfile, m_appSettings.AutoFixFooter);
ChecksumHandler csHandler = new ChecksumHandler();
csHandler.SramOffset = m_currentSramOffsett;
int fwLength = t7InfoHeader.getFWLength();
int calculatedFWChecksum = csHandler.calculateFWChecksum(m_currentfile);
uint calculatedF2Checksum = csHandler.calculateF2Checksum(m_currentfile, 0, fwLength);
int calculatedFBChecksum = csHandler.calculateFBChecksum(m_currentfile, 0, fwLength);
int readF2checksum = t7InfoHeader.getChecksumF2();
int readFBchecksum = t7InfoHeader.getChecksumFB();
if (readF2checksum != 0)
{
if (t7InfoHeader.getChecksumF2() != (int)calculatedF2Checksum)
{
m_checksums_ok = false;
}
}
if (t7InfoHeader.getChecksumFB() != calculatedFBChecksum)
{
m_checksums_ok = false;
}
if (csHandler.getFWChecksum(m_currentfile) != calculatedFWChecksum)
{
m_checksums_ok = false;
}
if (m_checksums_ok)
{
if (showinterface)
{
frmInfoBox info = new frmInfoBox("Checksums verified and all matched!");
}
}
else
{
if (m_appSettings.AutoChecksum)
{
logger.Debug("calculatedF2Checksum = " + calculatedF2Checksum.ToString("X8") + " readF2checksum = " + readF2checksum.ToString("X8"));
logger.Debug("calculatedFBChecksum = " + calculatedFBChecksum.ToString("X8") + " readFBchecksum = " + readFBchecksum.ToString("X8"));
logger.Debug("calculatedFWChecksum = " + calculatedFWChecksum.ToString("X8") + " csHandler.getFWChecksum(m_currentfile) = " + csHandler.getFWChecksum(m_currentfile).ToString("X8"));
csHandler.setFWChecksum(m_currentfile, calculatedFWChecksum);
t7InfoHeader.setChecksumF2((int)calculatedF2Checksum);
t7InfoHeader.setChecksumFB(calculatedFBChecksum);
t7InfoHeader.save(m_currentfile);
if (showinterface)
{
frmInfoBox info = new frmInfoBox("Checksums did not verify ok, but were recalculated.");
}
}
else
{
if (MessageBox.Show("Checksums did not verify ok, do you want to recalculate and update the checksums?", "Question", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
csHandler.setFWChecksum(m_currentfile, calculatedFWChecksum);
t7InfoHeader.setChecksumF2((int)calculatedF2Checksum);
t7InfoHeader.setChecksumFB(calculatedFBChecksum);
t7InfoHeader.save(m_currentfile);
}
}
}
}
else
{
if (showinterface)
{
frmInfoBox info = new frmInfoBox("Current file does not exsist, please re-open the file.");
}
}
return m_checksums_ok;
}
private void UpdateChecksum(string m_fileName)
{
T7FileHeader t7InfoHeader = null;
t7InfoHeader = new T7FileHeader();
t7InfoHeader.init(m_fileName, m_appSettings.AutoFixFooter);
ChecksumHandler csHandler = new ChecksumHandler();
csHandler.SramOffset = m_currentSramOffsett;
int fwLength = t7InfoHeader.getFWLength();
int calculatedFWChecksum = csHandler.calculateFWChecksum(m_fileName);
logger.Debug("FW Checksum: " + calculatedFWChecksum.ToString("X8"));
csHandler.setFWChecksum(m_fileName, calculatedFWChecksum);
uint calculatedF2Checksum = csHandler.calculateF2Checksum(m_fileName, 0, fwLength);
int calculatedFBChecksum = csHandler.calculateFBChecksum(m_fileName, 0, fwLength);
t7InfoHeader.setChecksumF2((int)calculatedF2Checksum);
t7InfoHeader.setChecksumFB(calculatedFBChecksum);
t7InfoHeader.save(m_fileName);
}