/// <summary>
/// Overridden to read the signature file.
/// </summary>
/// <param name="monitor">The monitor to use.</param>
/// <returns>The signature or <see cref="SHA1Value.Zero"/> if it can't be read.</returns>
protected override SHA1Value DoGetSignature(IActivityMonitor monitor)
{
var firstLine = SafeReadFirstLine(monitor, _signatureFile);
if (firstLine != null && SHA1Value.TryParse(firstLine, out var signature))
{
return(signature);
}
return(SHA1Value.Zero);
}
/// <summary>
/// Tries to extract a SHA1 signature from an existing directory: the <see cref="SignatureFileName"/> is read if it exists.
/// <para>
/// This can be overridden to detect the signature differently.
/// </para>
/// </summary>
/// <param name="monitor">The monitor to use.</param>
/// <returns><see cref="SHA1Value.Zero"/> if not found.</returns>
protected virtual SHA1Value DoGetSignature(IActivityMonitor monitor)
{
var f = Path.AppendPart(SignatureFileName);
if (File.Exists(f) && SHA1Value.TryParse(File.ReadAllText(f), out var signature))
{
return(signature);
}
return(SHA1Value.Zero);
}
/// <summary>
/// Tries to extract a SHA1 signature from a file: the first valid SHA value that appears in the <see cref="NormalizedPath.Parts"/> (split by dot '.')
/// form the end to start of the <see cref="Path"/>.
/// <para>
/// This can be overridden to detect the signature differently.
/// </para>
/// </summary>
/// <param name="monitor">The monitor to use.</param>
/// <returns><see cref="SHA1Value.Zero"/> if not found.</returns>
protected virtual SHA1Value DoGetSignature(IActivityMonitor monitor)
{
foreach (var part in Path.Parts.Reverse())
{
foreach (var p in part.Split('.').Reverse())
{
if (SHA1Value.TryParse(p, out var signature))
{
return(signature);
}
}
}
return(SHA1Value.Zero);
}
/// <summary>
/// Overridden to match [assembly: CK.StObj.Signature( "..." )] SHA1 attribute in the first line.
/// </summary>
/// <param name="monitor"></param>
/// <returns></returns>
protected override SHA1Value DoGetSignature(IActivityMonitor monitor)
{
var firstLine = SafeReadFirstLine(monitor, Path);
if (firstLine != null)
{
var m = Regex.Match(firstLine, @"\s*\[\s*assembly\s*:\s*CK.StObj.Signature\s*\(\s*@?""(?<1>.*?)""");
if (m.Success && SHA1Value.TryParse(m.Groups[1].Value, out var signature))
{
return(signature);
}
}
monitor.Warn($"Unable to read [assembly: CK.StObj.Signature( \"...\" )] attribute from '{Path}'.");
return(SHA1Value.Zero);
}
public void SHA1_invalid_parse(int offset, string s, bool success)
{
SHA1Value v;
SHA1Value.TryParse(s, offset, out v).Should().Be(success);
}