public bool IsMet(IUpdateTask task)
{
var localPath = !string.IsNullOrEmpty(LocalPath)
? LocalPath
: Utils.Reflection.GetNauAttribute(task, "LocalPath") as string;
// local path is invalid, we can't check for anything so we will return as if the condition was met
if (string.IsNullOrEmpty(localPath))
{
return(true);
}
// if the local file does not exist, checksums don't match vacuously
if (!File.Exists(localPath))
{
return(false);
}
if ("sha256".Equals(ChecksumType, StringComparison.InvariantCultureIgnoreCase))
{
var sha256 = FileChecksum.GetSHA256Checksum(localPath);
if (!string.IsNullOrEmpty(sha256) && sha256.Equals(Checksum, StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
}
// TODO: Support more checksum algorithms (although SHA256 isn't known to have collisions, other are more commonly used)
return(false);
}
public FileInfoEx(string fileName, int rootDirectoryLength)
{
myFileInfo = new FileInfo(fileName);
myFileVersion = FileVersionInfo.GetVersionInfo(fileName).FileVersion;
if (myFileVersion != null)
{
myFileVersion = myFileVersion.Replace(", ", ".");
}
myHash = FileChecksum.GetSHA256Checksum(fileName);
RelativeName = fileName.Substring(rootDirectoryLength + 1);
}
public override void Prepare(Sources.IUpdateSource source)
{
if (string.IsNullOrEmpty(LocalPath))
{
UpdateManager.Instance.Logger.Log(Logger.SeverityLevel.Warning,
"FileUpdateTask: LocalPath is empty, task is a noop");
return; // Errorneous case, but there's nothing to prepare to, and by default we prefer a noop over an error
}
string fileName;
if (!string.IsNullOrEmpty(UpdateTo))
{
fileName = UpdateTo;
}
else
{
fileName = LocalPath;
}
_tempFile = null;
string baseUrl = UpdateManager.Instance.BaseUrl;
string tempFileLocal = Path.Combine(UpdateManager.Instance.Config.TempFolder, Guid.NewGuid().ToString());
UpdateManager.Instance.Logger.Log("FileUpdateTask: Downloading {0} with BaseUrl of {1} to {2}", fileName, baseUrl,
tempFileLocal);
if (!source.GetData(fileName, baseUrl, OnProgress, ref tempFileLocal))
{
throw new UpdateProcessFailedException("FileUpdateTask: Failed to get file from source");
}
_tempFile = tempFileLocal;
if (_tempFile == null)
{
throw new UpdateProcessFailedException("FileUpdateTask: Failed to get file from source");
}
if (!string.IsNullOrEmpty(Sha256Checksum))
{
string checksum = FileChecksum.GetSHA256Checksum(_tempFile);
if (!checksum.Equals(Sha256Checksum))
{
throw new UpdateProcessFailedException(string.Format(
"FileUpdateTask: Checksums do not match; expected {0} but got {1}", Sha256Checksum, checksum));
}
}
_destinationFile = Path.Combine(Path.GetDirectoryName(UpdateManager.Instance.ApplicationPath), LocalPath);
UpdateManager.Instance.Logger.Log("FileUpdateTask: Prepared successfully; destination file: {0}", _destinationFile);
}
public FileInfoEx(string fileName, int rootDirLength)
{
myFileInfo = new FileInfo(fileName);
var verInfo = FileVersionInfo.GetVersionInfo(fileName);
if (myFileVersion != null)
{
myFileVersion = new System.Version(verInfo.FileMajorPart, verInfo.FileMinorPart, verInfo.FileBuildPart, verInfo.FilePrivatePart).ToString();
}
myHash = FileChecksum.GetSHA256Checksum(fileName);
RelativeName = fileName.Substring(rootDirLength);
}
