///<summary>Creates an UpdateFile object describing an existing file on disk.</summary>
///<param name="basePath">The path to the base local directory containing the source files.</param>
///<param name="relativePath">The relative path to the source file on disk to describe.</param>
///<param name="remotePath">The path on the FTP server where the file will be uploaded, relative to the base Updates directory.</param>
///<param name="signers">A collection of RSA instances containing the private key(s) to sign the file.</param>
///<remarks>This method is called by the update publisher.</remarks>
public static UpdateFile Create(string basePath, string relativePath, Uri remotePath, IEnumerable <RSACryptoServiceProvider> signers)
{
if (remotePath == null)
{
throw new ArgumentNullException("remotePath");
}
if (signers == null || !signers.Any())
{
throw new ArgumentNullException("signers");
}
var filePath = Path.Combine(basePath, relativePath);
var info = new FileInfo(filePath);
var retVal = new UpdateFile {
RelativePath = relativePath,
RemoteUrl = remotePath,
Length = info.Length,
DateModifiedUtc = info.LastWriteTimeUtc
};
using (var hasher = hasherCreator())
using (var stream = File.OpenRead(filePath))
retVal.hash = hasher.ComputeHash(stream);
retVal.signatures = signers.Select(s => s.SignHash(retVal.hash, signatureAlgorithm)).ToList().AsReadOnly();
return(retVal);
}
///<summary>Creates an UpdateFile object describing an existing file on disk.</summary>
///<param name="basePath">The path to the base local directory containing the source files.</param>
///<param name="relativePath">The relative path to the source file on disk to describe.</param>
///<param name="remotePath">The path on the FTP server where the file will be uploaded, relative to the base Updates directory.</param>
///<param name="signers">A collection of RSA instances containing the private key(s) to sign the file.</param>
///<remarks>This method is called by the update publisher.</remarks>
public static UpdateFile Create(string basePath, string relativePath, Uri remotePath, IEnumerable<RSACryptoServiceProvider> signers)
{
if (remotePath == null) throw new ArgumentNullException("remotePath");
if (signers == null || !signers.Any()) throw new ArgumentNullException("signers");
var filePath = Path.Combine(basePath, relativePath);
var info = new FileInfo(filePath);
var retVal = new UpdateFile {
RelativePath = relativePath,
RemoteUrl = remotePath,
Length = info.Length,
DateModifiedUtc = info.LastWriteTimeUtc
};
using (var hasher = hasherCreator())
using (var stream = File.OpenRead(filePath))
retVal.hash = hasher.ComputeHash(stream);
retVal.signatures = signers.Select(s => s.SignHash(retVal.hash, signatureAlgorithm)).ToList().AsReadOnly();
return retVal;
}
///<summary>Parses an UpdateFile object from an XML element.</summary>
///<param name="element">An XML element from an update manifest.</param>
public static UpdateFile FromXml(XElement element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
var retVal = new UpdateFile {
RelativePath = element.Attribute("RelativePath").Value,
Length = long.Parse(element.Attribute("Size").Value, CultureInfo.InvariantCulture),
DateModifiedUtc = DateTime.ParseExact(element.Attribute("Timestamp").Value, "o", CultureInfo.InvariantCulture).ToUniversalTime(),
RemoteUrl = new Uri(element.Attribute("Url").Value, UriKind.Relative),
hash = Convert.FromBase64String(element.Element("Hash").Value),
signatures = element.Elements("Signature").Select(e => Convert.FromBase64String(e.Value)).ToList().AsReadOnly()
};
if (!retVal.signatures.Any(s => UpdateConfig.Standard.UpdateVerifier.VerifyHash(retVal.hash, signatureAlgorithm, s)))
{
throw new InvalidDataException("Bad signature for " + retVal.RelativePath);
}
return(retVal);
}
///<summary>Parses an UpdateFile object from an XML element.</summary>
///<param name="element">An XML element from an update manifest.</param>
public static UpdateFile FromXml(XElement element)
{
if (element == null) throw new ArgumentNullException("element");
var retVal = new UpdateFile {
RelativePath = element.Attribute("RelativePath").Value,
Length = long.Parse(element.Attribute("Size").Value, CultureInfo.InvariantCulture),
DateModifiedUtc = DateTime.ParseExact(element.Attribute("Timestamp").Value, "o", CultureInfo.InvariantCulture).ToUniversalTime(),
RemoteUrl = new Uri(element.Attribute("Url").Value, UriKind.Relative),
hash = Convert.FromBase64String(element.Element("Hash").Value),
signatures = element.Elements("Signature").Select(e => Convert.FromBase64String(e.Value)).ToList().AsReadOnly()
};
if (!retVal.signatures.Any(s => UpdateConfig.Standard.UpdateVerifier.VerifyHash(retVal.hash, signatureAlgorithm, s)))
throw new InvalidDataException("Bad signature for " + retVal.RelativePath);
return retVal;
}
public TreeFile(UpdateFile uf, ReadOnlyCollection<string> updateFiles, string newBasePath)
{
FullPath = uf.RelativePath.Replace('/', '\\');
Size = uf.Length;
if (!updateFiles.Contains(Path.Combine(newBasePath, uf.RelativePath), StringComparer.OrdinalIgnoreCase))
State = (int)FileState.Deleted;
else if (uf.Matches(newBasePath))
State = (int)FileState.Identical;
else
State = (int)FileState.Changed;
}
