(untested) Extensively refactor request handler.
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40be688f26
commit
008cb25636
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@ -11,6 +11,14 @@ using System.Reflection;
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namespace GalleryShare
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{
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enum OutputFunction
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{
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None,
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SpecialFile,
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DirectoryListing,
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SendFile
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}
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class GalleryServer
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{
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int port;
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@ -60,90 +68,54 @@ namespace GalleryShare
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/// <param name="cycle">The Http request to handle.</param>
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private async Task Handle(HttpListenerContext cycle)
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{
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if(cycle.Request.RawUrl == @"/!Transform-DirListing.xslt")
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OutputFunction outFunction = OutputFunction.None;
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if (cycle.Request.RawUrl.StartsWith("/!"))
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outFunction = OutputFunction.SpecialFile;
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string requestedPath = GetFullReqestedPath(cycle.Request.RawUrl);
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if (Directory.Exists(requestedPath))
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outFunction = OutputFunction.DirectoryListing;
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if (File.Exists(requestedPath))
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outFunction = OutputFunction.SendFile;
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switch(outFunction)
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{
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/*string[] resNames = Assembly.GetExecutingAssembly().GetManifestResourceNames();
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foreach (string resName in resNames)
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Console.WriteLine(resName);*/
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cycle.Response.ContentType = "text/xsl";
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byte[] xsltData = await Utilities.GetEmbeddedResourceContent(@"GalleryShare.XSLT.DirectoryListing.xslt");
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await cycle.Response.OutputStream.WriteAsync(xsltData, 0, xsltData.Length);
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logCycle(cycle);
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cycle.Response.Close();
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return;
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}
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string requestedPath = Path.GetFullPath(Path.Combine(servingDirectory, "." + cycle.Request.RawUrl));
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if (!File.Exists(requestedPath) && !Directory.Exists(requestedPath))
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{
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await sendMessage(cycle, 404, "Error: File or directory '{0}' not found.", requestedPath);
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logCycle(cycle);
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return;
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}
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FileAttributes reqPathAttrs = File.GetAttributes(requestedPath);
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StreamWriter responseData = new StreamWriter(cycle.Response.OutputStream);
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if(reqPathAttrs.HasFlag(FileAttributes.Directory))
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{
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List<string> dirFiles = new List<string>(Directory.GetFiles(requestedPath));
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List<string> dirDirectories = new List<string>(Directory.GetDirectories(requestedPath));
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cycle.Response.ContentType = "text/xml";
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case OutputFunction.SpecialFile:
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await sendSpecialFile(cycle);
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break;
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await responseData.FlushAsync();
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XmlWriterSettings writerSettings = new XmlWriterSettings();
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writerSettings.Async = true;
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XmlWriter xmlData = XmlWriter.Create(cycle.Response.OutputStream, writerSettings);
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await xmlData.WriteStartDocumentAsync();
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await xmlData.WriteProcessingInstructionAsync("xsl-stylesheet", "type=\"text/xsl\" href=\"/!Transform-DirListing.xslt\"");
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await xmlData.WriteStartElementAsync(null, "DirectoryListing", null);
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foreach (string directoryname in dirDirectories)
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{
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await xmlData.WriteStartElementAsync(null, "ListingEntry", null);
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await xmlData.WriteAttributeStringAsync(null, "Type", null, "Directory");
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await xmlData.WriteElementStringAsync(null, "Name", null, directoryname);
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// TODO: Write out the number of items in directory
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// TODO: Write out thumbnail url
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await xmlData.WriteEndElementAsync();
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}
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foreach (string filename in dirFiles)
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{
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await xmlData.WriteStartElementAsync(null, "ListingEntry", null);
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await xmlData.WriteAttributeStringAsync(null, "Type", null, "File");
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await xmlData.WriteElementStringAsync(null, "Name", null, filename);
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// TODO: Write out thumbnail url
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await xmlData.WriteEndElementAsync();
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}
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await xmlData.WriteEndDocumentAsync();
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await xmlData.FlushAsync();
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case OutputFunction.DirectoryListing:
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cycle.Response.ContentType = "text/xml";
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await sendDirectoryListing(cycle.Response.OutputStream, cycle.Request.RawUrl, requestedPath);
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break;
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case OutputFunction.SendFile:
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break;
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default:
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await sendMessage(cycle, 404, "Error: File or directory '{0}' not found.", requestedPath);
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break;
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}
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logCycle(cycle);
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responseData.Close();
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cycle.Response.Close();
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}
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private string GetFullReqestedPath(string rawUrl)
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{
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return Path.GetFullPath(Path.Combine(servingDirectory, "." + rawUrl));
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}
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private async Task sendMessage(HttpListenerContext cycle, int statusCode, string message, params object[] paramObjects)
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{
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StreamWriter responseData = new StreamWriter(cycle.Response.OutputStream);
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cycle.Response.StatusCode = statusCode;
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await responseData.WriteLineAsync(string.Format(message, paramObjects));
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responseData.Close();
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cycle.Response.Close();
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/*responseData.Close();
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cycle.Response.Close();*/
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}
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private void logCycle(HttpListenerContext cycle)
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@ -156,6 +128,75 @@ namespace GalleryShare
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cycle.Request.RawUrl
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);
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}
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private async Task sendDirectoryListing(Stream outgoingData, string rawUrl, string requestedPath)
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{
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List<string> dirFiles = new List<string>(Directory.GetFiles(requestedPath));
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List<string> dirDirectories = new List<string>(Directory.GetDirectories(requestedPath));
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XmlWriterSettings writerSettings = new XmlWriterSettings();
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writerSettings.Async = true;
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XmlWriter xmlData = XmlWriter.Create(outgoingData, writerSettings);
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await xmlData.WriteStartDocumentAsync();
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await xmlData.WriteProcessingInstructionAsync("xsl-stylesheet", "type=\"text/xsl\" href=\"/!Transform-DirListing.xslt\"");
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await xmlData.WriteStartElementAsync(null, "DirectoryListing", null);
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await xmlData.WriteElementStringAsync(null, "CurrentDirectory", null, rawUrl);
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await xmlData.WriteStartElementAsync(null, "Contents", null);
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foreach (string directoryname in dirDirectories)
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{
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await xmlData.WriteStartElementAsync(null, "ListingEntry", null);
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await xmlData.WriteAttributeStringAsync(null, "Type", null, "Directory");
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await xmlData.WriteElementStringAsync(null, "Name", null, directoryname);
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// TODO: Write out the number of items in directory
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// TODO: Write out thumbnail url
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await xmlData.WriteEndElementAsync();
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}
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foreach (string filename in dirFiles)
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{
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await xmlData.WriteStartElementAsync(null, "ListingEntry", null);
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await xmlData.WriteAttributeStringAsync(null, "Type", null, "File");
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await xmlData.WriteElementStringAsync(null, "Name", null, filename);
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// TODO: Write out thumbnail url
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await xmlData.WriteEndElementAsync();
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}
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await xmlData.WriteEndDocumentAsync();
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await xmlData.FlushAsync();
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}
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private async Task sendSpecialFile(HttpListenerContext cycle)
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{
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string specialFileName = cycle.Request.RawUrl.Substring(2);
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string outputFileName = string.Empty;
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switch(specialFileName)
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{
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case "Transform-DirListing.xslt":
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outputFileName = @"GalleryShare.XSLT.DirectoryListing.xslt";
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break;
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}
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if (outputFileName == string.Empty)
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{
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await sendMessage(cycle, 404, "Error: Unknown special file '{0}' requested.", specialFileName);
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return;
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}
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/*string[] resNames = Assembly.GetExecutingAssembly().GetManifestResourceNames();
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foreach (string resName in resNames)
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Console.WriteLine(resName);*/
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cycle.Response.ContentType = "text/xsl";
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byte[] xsltData = await Utilities.GetEmbeddedResourceContent(outputFileName);
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await cycle.Response.OutputStream.WriteAsync(xsltData, 0, xsltData.Length);
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}
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}
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}
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