private void PasswordRequired(object sender, CompressionPasswordRequiredEventArgs e)
{
this.Invoke((MethodInvoker)delegate()
{
frmPassword dlg = new frmPassword();
if (dlg.ShowDialog(this) == DialogResult.OK)
{
e.Password = dlg.txtPassword.Text;
e.ContinueOperation = true;
}
else
e.ContinueOperation = false;
});
}
public override int Read(byte[] buffer, int offset, int count)
{
if (position == 0 && zipEntry.IsCrypted && ((ZipInputStream)zipStream).Password == null && PasswordRequired != null)
{
CompressionPasswordRequiredEventArgs e = new CompressionPasswordRequiredEventArgs();
PasswordRequired(this, e);
if (e.ContinueOperation && e.Password.Length > 0)
((ZipInputStream)zipStream).Password = e.Password;
}
// TODO: always save to a local temp circular buffer for optimization of the backwards seek.
int total = zipStream.Read(buffer, offset, count);
position += total;
if (ExtractionProgress != null)
{
CompressionExtractionProgressEventArgs e = new CompressionExtractionProgressEventArgs();
e.BytesExtracted = position;
e.FileName = zipEntry.Name;
e.FileSize = zipEntry.Size;
e.PercentComplete = 100.0 * position / zipEntry.Size;
ExtractionProgress(this, e);
}
return total;
}
protected virtual int OnPasswordRequired(IntPtr p1, int p2)
{
int result=-1;
if(this.PasswordRequired!=null)
{
CompressionPasswordRequiredEventArgs e = new CompressionPasswordRequiredEventArgs();
this.PasswordRequired(this, e);
if(e.ContinueOperation && e.Password.Length>0)
{
for(int i=0; (i<e.Password.Length) && (i<p2); i++)
Marshal.WriteByte(p1, i, (byte)e.Password[i]);
Marshal.WriteByte(p1, e.Password.Length, (byte)0);
result=1;
}
}
else
{
throw new IOException("Password is required for extraction.");
}
return result;
}
private void unzip_PasswordRequired(object sender, CompressionPasswordRequiredEventArgs e)
{
if (_archivePassword != null)
{
e.ContinueOperation = true;
e.Password = _archivePassword;
return;
}
if (this.PasswordRequired != null)
{
this.PasswordRequired(this, e);
if (e.ContinueOperation && e.Password != "")
{
_archivePassword = e.Password;
return;
}
}
throw new IOException("Password is required for extraction.");
}
