mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-11-19 20:09:03 -07:00
525 lines
16 KiB
C#
525 lines
16 KiB
C#
using System;
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using System.Globalization;
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using System.IO;
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using System.Net;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Text;
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using SocketHttpListener.Primitives;
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namespace SocketHttpListener.Net
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{
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public sealed class HttpListenerResponse : IDisposable
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{
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bool disposed;
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Encoding content_encoding;
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long content_length;
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bool cl_set;
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string content_type;
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CookieCollection cookies;
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WebHeaderCollection headers = new WebHeaderCollection();
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bool keep_alive = true;
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Stream output_stream;
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Version version = HttpVersion.Version11;
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string location;
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int status_code = 200;
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string status_description = "OK";
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bool chunked;
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HttpListenerContext context;
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internal bool HeadersSent;
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internal object headers_lock = new object();
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private readonly ILogger _logger;
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private readonly ITextEncoding _textEncoding;
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private readonly IFileSystem _fileSystem;
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internal HttpListenerResponse(HttpListenerContext context, ILogger logger, ITextEncoding textEncoding, IFileSystem fileSystem)
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{
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this.context = context;
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_logger = logger;
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_textEncoding = textEncoding;
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_fileSystem = fileSystem;
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}
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internal bool CloseConnection
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{
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get
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{
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return headers["Connection"] == "close";
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}
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}
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public Encoding ContentEncoding
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{
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get
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{
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if (content_encoding == null)
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content_encoding = _textEncoding.GetDefaultEncoding();
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return content_encoding;
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}
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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content_encoding = value;
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}
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}
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public long ContentLength64
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{
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get { return content_length; }
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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if (HeadersSent)
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throw new InvalidOperationException("Cannot be changed after headers are sent.");
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if (value < 0)
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throw new ArgumentOutOfRangeException("Must be >= 0", "value");
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cl_set = true;
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content_length = value;
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}
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}
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public string ContentType
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{
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get { return content_type; }
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set
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{
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// TODO: is null ok?
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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content_type = value;
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}
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}
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// RFC 2109, 2965 + the netscape specification at http://wp.netscape.com/newsref/std/cookie_spec.html
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public CookieCollection Cookies
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{
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get
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{
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if (cookies == null)
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cookies = new CookieCollection();
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return cookies;
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}
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set { cookies = value; } // null allowed?
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}
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public WebHeaderCollection Headers
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{
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get { return headers; }
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set
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{
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/**
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* "If you attempt to set a Content-Length, Keep-Alive, Transfer-Encoding, or
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* WWW-Authenticate header using the Headers property, an exception will be
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* thrown. Use the KeepAlive or ContentLength64 properties to set these headers.
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* You cannot set the Transfer-Encoding or WWW-Authenticate headers manually."
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*/
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// TODO: check if this is marked readonly after headers are sent.
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headers = value;
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}
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}
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public bool KeepAlive
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{
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get { return keep_alive; }
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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keep_alive = value;
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}
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}
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public Stream OutputStream
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{
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get
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{
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if (output_stream == null)
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output_stream = context.Connection.GetResponseStream();
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return output_stream;
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}
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}
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public Version ProtocolVersion
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{
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get { return version; }
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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if (value == null)
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throw new ArgumentNullException("value");
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if (value.Major != 1 || (value.Minor != 0 && value.Minor != 1))
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throw new ArgumentException("Must be 1.0 or 1.1", "value");
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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version = value;
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}
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}
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public string RedirectLocation
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{
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get { return location; }
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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location = value;
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}
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}
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public bool SendChunked
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{
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get { return chunked; }
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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chunked = value;
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}
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}
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public int StatusCode
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{
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get { return status_code; }
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set
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{
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if (disposed)
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throw new ObjectDisposedException(GetType().ToString());
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if (value < 100 || value > 999)
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throw new ProtocolViolationException("StatusCode must be between 100 and 999.");
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status_code = value;
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status_description = GetStatusDescription(value);
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}
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}
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internal static string GetStatusDescription(int code)
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{
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switch (code)
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{
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case 100: return "Continue";
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case 101: return "Switching Protocols";
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case 102: return "Processing";
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case 200: return "OK";
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case 201: return "Created";
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case 202: return "Accepted";
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case 203: return "Non-Authoritative Information";
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case 204: return "No Content";
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case 205: return "Reset Content";
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case 206: return "Partial Content";
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case 207: return "Multi-Status";
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case 300: return "Multiple Choices";
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case 301: return "Moved Permanently";
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case 302: return "Found";
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case 303: return "See Other";
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case 304: return "Not Modified";
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case 305: return "Use Proxy";
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case 307: return "Temporary Redirect";
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case 400: return "Bad Request";
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case 401: return "Unauthorized";
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case 402: return "Payment Required";
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case 403: return "Forbidden";
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case 404: return "Not Found";
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case 405: return "Method Not Allowed";
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case 406: return "Not Acceptable";
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case 407: return "Proxy Authentication Required";
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case 408: return "Request Timeout";
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case 409: return "Conflict";
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case 410: return "Gone";
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case 411: return "Length Required";
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case 412: return "Precondition Failed";
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case 413: return "Request Entity Too Large";
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case 414: return "Request-Uri Too Long";
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case 415: return "Unsupported Media Type";
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case 416: return "Requested Range Not Satisfiable";
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case 417: return "Expectation Failed";
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case 422: return "Unprocessable Entity";
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case 423: return "Locked";
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case 424: return "Failed Dependency";
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case 500: return "Internal Server Error";
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case 501: return "Not Implemented";
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case 502: return "Bad Gateway";
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case 503: return "Service Unavailable";
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case 504: return "Gateway Timeout";
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case 505: return "Http Version Not Supported";
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case 507: return "Insufficient Storage";
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}
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return "";
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}
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public string StatusDescription
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{
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get { return status_description; }
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set
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{
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status_description = value;
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}
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}
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void IDisposable.Dispose()
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{
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Close(true); //TODO: Abort or Close?
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}
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public void Abort()
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{
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if (disposed)
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return;
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Close(true);
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}
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public void AddHeader(string name, string value)
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{
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if (name == null)
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throw new ArgumentNullException("name");
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if (name == "")
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throw new ArgumentException("'name' cannot be empty", "name");
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//TODO: check for forbidden headers and invalid characters
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if (value.Length > 65535)
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throw new ArgumentOutOfRangeException("value");
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headers.Set(name, value);
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}
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public void AppendCookie(Cookie cookie)
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{
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if (cookie == null)
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throw new ArgumentNullException("cookie");
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Cookies.Add(cookie);
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}
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public void AppendHeader(string name, string value)
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{
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if (name == null)
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throw new ArgumentNullException("name");
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if (name == "")
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throw new ArgumentException("'name' cannot be empty", "name");
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if (value.Length > 65535)
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throw new ArgumentOutOfRangeException("value");
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headers.Add(name, value);
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}
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private void Close(bool force)
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{
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if (force)
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{
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_logger.Debug("HttpListenerResponse force closing HttpConnection");
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}
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disposed = true;
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context.Connection.Close(force);
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}
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public void Close()
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{
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if (disposed)
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return;
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Close(false);
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}
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public void Redirect(string url)
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{
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StatusCode = 302; // Found
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location = url;
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}
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bool FindCookie(Cookie cookie)
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{
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string name = cookie.Name;
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string domain = cookie.Domain;
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string path = cookie.Path;
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foreach (Cookie c in cookies)
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{
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if (name != c.Name)
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continue;
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if (domain != c.Domain)
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continue;
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if (path == c.Path)
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return true;
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}
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return false;
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}
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public void DetermineIfChunked()
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{
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if (chunked)
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{
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return;
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}
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Version v = context.Request.ProtocolVersion;
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if (!cl_set && !chunked && v >= HttpVersion.Version11)
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chunked = true;
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if (!chunked && string.Equals(headers["Transfer-Encoding"], "chunked"))
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{
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chunked = true;
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}
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}
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internal void SendHeaders(bool closing, MemoryStream ms)
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{
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Encoding encoding = content_encoding;
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if (encoding == null)
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encoding = _textEncoding.GetDefaultEncoding();
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if (content_type != null)
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{
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if (content_encoding != null && content_type.IndexOf("charset=", StringComparison.OrdinalIgnoreCase) == -1)
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{
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string enc_name = content_encoding.WebName;
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headers.SetInternal("Content-Type", content_type + "; charset=" + enc_name);
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}
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else
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{
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headers.SetInternal("Content-Type", content_type);
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}
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}
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if (headers["Server"] == null)
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headers.SetInternal("Server", "Mono-HTTPAPI/1.0");
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CultureInfo inv = CultureInfo.InvariantCulture;
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if (headers["Date"] == null)
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headers.SetInternal("Date", DateTime.UtcNow.ToString("r", inv));
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if (!chunked)
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{
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if (!cl_set && closing)
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{
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cl_set = true;
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content_length = 0;
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}
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if (cl_set)
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headers.SetInternal("Content-Length", content_length.ToString(inv));
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}
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Version v = context.Request.ProtocolVersion;
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if (!cl_set && !chunked && v >= HttpVersion.Version11)
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chunked = true;
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/* Apache forces closing the connection for these status codes:
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* HttpStatusCode.BadRequest 400
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* HttpStatusCode.RequestTimeout 408
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* HttpStatusCode.LengthRequired 411
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* HttpStatusCode.RequestEntityTooLarge 413
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* HttpStatusCode.RequestUriTooLong 414
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* HttpStatusCode.InternalServerError 500
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* HttpStatusCode.ServiceUnavailable 503
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*/
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bool conn_close = status_code == 400 || status_code == 408 || status_code == 411 ||
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status_code == 413 || status_code == 414 ||
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status_code == 500 ||
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status_code == 503;
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if (conn_close == false)
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conn_close = !context.Request.KeepAlive;
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// They sent both KeepAlive: true and Connection: close!?
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if (!keep_alive || conn_close)
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{
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headers.SetInternal("Connection", "close");
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conn_close = true;
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}
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if (chunked)
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headers.SetInternal("Transfer-Encoding", "chunked");
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//int reuses = context.Connection.Reuses;
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//if (reuses >= 100)
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//{
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// _logger.Debug("HttpListenerResponse - keep alive has exceeded 100 uses and will be closed.");
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// force_close_chunked = true;
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// if (!conn_close)
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// {
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// headers.SetInternal("Connection", "close");
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// conn_close = true;
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// }
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//}
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if (!conn_close)
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{
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if (context.Request.ProtocolVersion <= HttpVersion.Version10)
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headers.SetInternal("Connection", "keep-alive");
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}
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if (location != null)
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headers.SetInternal("Location", location);
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if (cookies != null)
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{
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foreach (Cookie cookie in cookies)
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headers.SetInternal("Set-Cookie", cookie.ToString());
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}
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headers.SetInternal("Status", status_code.ToString(CultureInfo.InvariantCulture));
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using (StreamWriter writer = new StreamWriter(ms, encoding, 256, true))
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{
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writer.Write("HTTP/{0} {1} {2}\r\n", version, status_code, status_description);
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string headers_str = headers.ToStringMultiValue();
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writer.Write(headers_str);
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writer.Flush();
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}
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int preamble = encoding.GetPreamble().Length;
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if (output_stream == null)
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output_stream = context.Connection.GetResponseStream();
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/* Assumes that the ms was at position 0 */
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ms.Position = preamble;
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HeadersSent = true;
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}
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public void SetCookie(Cookie cookie)
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{
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if (cookie == null)
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throw new ArgumentNullException("cookie");
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if (cookies != null)
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{
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if (FindCookie(cookie))
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throw new ArgumentException("The cookie already exists.");
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}
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else
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{
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cookies = new CookieCollection();
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}
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cookies.Add(cookie);
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}
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public Task TransmitFile(string path, long offset, long count, FileShareMode fileShareMode, CancellationToken cancellationToken)
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{
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return ((HttpResponseStream)OutputStream).TransmitFile(path, offset, count, fileShareMode, cancellationToken);
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}
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}
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} |