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Nibriboard/Nibriboard/HttpEmbeddedFileHandler.cs

76 lines
2.4 KiB
C#

using System;
using System.IO;
using IotWeb.Common.Http;
using MimeSharp;
using SBRLUtilities;
using System.Collections.Generic;
using System.Reflection;
namespace Nibriboard
{
public class HttpEmbeddedFileHandler : IHttpRequestHandler
{
private string filePrefix;
private Mime mimeTypeFinder = new Mime();
private Dictionary<string, string> mimeTypeOverrides = new Dictionary<string, string>() {
["application/xhtml+xml"] = "text/html",
["application/tei+xml"] = "image/x-icon"
};
private List<string> embeddedFiles = new List<string>(EmbeddedFiles.ResourceList);
public HttpEmbeddedFileHandler(string inFilePrefix)
{
filePrefix = inFilePrefix;
}
public void HandleRequest(string uri, HttpRequest request, HttpResponse response, HttpContext context) {
StreamWriter responseData = new StreamWriter(response.Content) { AutoFlush = true };
if (request.Method != HttpMethod.Get) {
response.ResponseCode = HttpResponseCode.MethodNotAllowed;
response.ContentType = "text/plain";
responseData.WriteLine("Error: That method isn't supported yet.");
logRequest(request, response);
return;
}
response.ContentType = getMimeType(request.URI);
response.Headers.Add("content-type", response.ContentType);
string expandedFilePath = getEmbeddedFileReference(request.URI);
if (!embeddedFiles.Contains(expandedFilePath)) {
response.ResponseCode = HttpResponseCode.NotFound;
response.ContentType = "text/plain";
responseData.WriteLine("Can't find {0}.", expandedFilePath);
logRequest(request, response);
return;
}
byte[] embeddedFile = EmbeddedFiles.ReadAllBytes(expandedFilePath);
response.ContentLength = embeddedFile.Length;
response.Content.Write(embeddedFile, 0, embeddedFile.Length);
logRequest(request, response);
}
protected string getEmbeddedFileReference(string uri) {
return filePrefix + "." + uri.TrimStart("/".ToCharArray());
}
protected string getMimeType(string uri) {
string mimeType = mimeTypeFinder.Lookup(uri);
foreach (KeyValuePair<string, string> mimeMapping in mimeTypeOverrides) {
if (mimeType == mimeMapping.Key)
mimeType = mimeMapping.Value;
}
return mimeType;
}
private void logRequest(HttpRequest request, HttpResponse response) {
Log.WriteLine("[Http/FileHandler] {0} {1} {2} {3}", response.ResponseCode.ResponseCode(), response.ContentType, request.Method.ToString().ToUpper(), request.URI);
}
}
}