2 // System.Net.HttpListenerRequest
5 // Gonzalo Paniagua Javier (gonzalo.mono@gmail.com)
6 // Marek Safar (marek.safar@gmail.com)
8 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
9 // Copyright (c) 2011-2012 Xamarin, Inc. (http://xamarin.com)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Collections;
34 using System.Collections.Specialized;
35 using System.Globalization;
37 using System.Security.Cryptography.X509Certificates;
39 using System.Security.Authentication.ExtendedProtection;
40 using System.Threading.Tasks;
43 namespace System.Net {
44 public sealed class HttpListenerRequest
46 class Context : TransportContext
48 public override ChannelBinding GetChannelBinding (ChannelBindingKind kind)
50 throw new NotImplementedException ();
54 string [] accept_types;
55 Encoding content_encoding;
58 CookieCollection cookies;
59 WebHeaderCollection headers;
63 NameValueCollection query_string; // check if null is ok, check if read-only, check case-sensitiveness
67 string [] user_languages;
68 HttpListenerContext context;
72 delegate X509Certificate2 GCCDelegate ();
73 GCCDelegate gcc_delegate;
75 static byte [] _100continue = Encoding.ASCII.GetBytes ("HTTP/1.1 100 Continue\r\n\r\n");
77 internal HttpListenerRequest (HttpListenerContext context)
79 this.context = context;
80 headers = new WebHeaderCollection ();
81 version = HttpVersion.Version10;
84 static char [] separators = new char [] { ' ' };
86 internal void SetRequestLine (string req)
88 string [] parts = req.Split (separators, 3);
89 if (parts.Length != 3) {
90 context.ErrorMessage = "Invalid request line (parts).";
95 foreach (char c in method){
98 if ((ic >= 'A' && ic <= 'Z') ||
99 (ic > 32 && c < 127 && c != '(' && c != ')' && c != '<' &&
100 c != '<' && c != '>' && c != '@' && c != ',' && c != ';' &&
101 c != ':' && c != '\\' && c != '"' && c != '/' && c != '[' &&
102 c != ']' && c != '?' && c != '=' && c != '{' && c != '}'))
105 context.ErrorMessage = "(Invalid verb)";
110 if (parts [2].Length != 8 || !parts [2].StartsWith ("HTTP/")) {
111 context.ErrorMessage = "Invalid request line (version).";
116 version = new Version (parts [2].Substring (5));
117 if (version.Major < 1)
118 throw new Exception ();
120 context.ErrorMessage = "Invalid request line (version).";
125 void CreateQueryString (string query)
127 if (query == null || query.Length == 0) {
128 query_string = new NameValueCollection (1);
132 query_string = new NameValueCollection ();
133 if (query [0] == '?')
134 query = query.Substring (1);
135 string [] components = query.Split ('&');
136 foreach (string kv in components) {
137 int pos = kv.IndexOf ('=');
139 query_string.Add (null, WebUtility.UrlDecode (kv));
141 string key = WebUtility.UrlDecode (kv.Substring (0, pos));
142 string val = WebUtility.UrlDecode (kv.Substring (pos + 1));
144 query_string.Add (key, val);
149 static bool MaybeUri (string s)
151 int p = s.IndexOf (':');
158 return IsPredefinedScheme (s.Substring (0, p));
162 // Using a simple block of if's is twice as slow as the compiler generated
163 // switch statement. But using this tuned code is faster than the
164 // compiler generated code, with a million loops on x86-64:
166 // With "http": .10 vs .51 (first check)
167 // with "https": .16 vs .51 (second check)
168 // with "foo": .22 vs .31 (never found)
169 // with "mailto": .12 vs .51 (last check)
172 static bool IsPredefinedScheme (string scheme)
174 if (scheme == null || scheme.Length < 3)
179 return (scheme == "http" || scheme == "https");
181 return (scheme == "file" || scheme == "ftp");
186 return (scheme == "news" || scheme == "net.pipe" || scheme == "net.tcp");
187 if (scheme == "nntp")
191 if ((c == 'g' && scheme == "gopher") || (c == 'm' && scheme == "mailto"))
197 internal void FinishInitialization ()
199 string host = UserHostName;
200 if (version > HttpVersion.Version10 && (host == null || host.Length == 0)) {
201 context.ErrorMessage = "Invalid host name";
207 if (MaybeUri (raw_url.ToLowerInvariant ()) && Uri.TryCreate (raw_url, UriKind.Absolute, out raw_uri))
208 path = raw_uri.PathAndQuery;
212 if ((host == null || host.Length == 0))
213 host = UserHostAddress;
218 int colon = host.IndexOf (':');
220 host = host.Substring (0, colon);
222 string base_uri = String.Format ("{0}://{1}:{2}",
223 (IsSecureConnection) ? "https" : "http",
224 host, LocalEndPoint.Port);
226 if (!Uri.TryCreate (base_uri + path, UriKind.Absolute, out url)){
227 context.ErrorMessage = WebUtility.HtmlEncode ("Invalid url: " + base_uri + path);
231 CreateQueryString (url.Query);
233 // Use reference source HttpListenerRequestUriBuilder to process url.
235 url = HttpListenerRequestUriBuilder.GetRequestUri (raw_url, url.Scheme,
236 url.Authority, url.LocalPath, url.Query);
238 if (version >= HttpVersion.Version11) {
239 string t_encoding = Headers ["Transfer-Encoding"];
240 is_chunked = (t_encoding != null && String.Compare (t_encoding, "chunked", StringComparison.OrdinalIgnoreCase) == 0);
241 // 'identity' is not valid!
242 if (t_encoding != null && !is_chunked) {
243 context.Connection.SendError (null, 501);
248 if (!is_chunked && !cl_set) {
249 if (String.Compare (method, "POST", StringComparison.OrdinalIgnoreCase) == 0 ||
250 String.Compare (method, "PUT", StringComparison.OrdinalIgnoreCase) == 0) {
251 context.Connection.SendError (null, 411);
256 if (String.Compare (Headers ["Expect"], "100-continue", StringComparison.OrdinalIgnoreCase) == 0) {
257 ResponseStream output = context.Connection.GetResponseStream ();
258 output.InternalWrite (_100continue, 0, _100continue.Length);
262 internal static string Unquote (String str) {
263 int start = str.IndexOf ('\"');
264 int end = str.LastIndexOf ('\"');
265 if (start >= 0 && end >=0)
266 str = str.Substring (start + 1, end - 1);
270 internal void AddHeader (string header)
272 int colon = header.IndexOf (':');
273 if (colon == -1 || colon == 0) {
274 context.ErrorMessage = "Bad Request";
275 context.ErrorStatus = 400;
279 string name = header.Substring (0, colon).Trim ();
280 string val = header.Substring (colon + 1).Trim ();
281 string lower = name.ToLower (CultureInfo.InvariantCulture);
282 headers.SetInternal (name, val);
284 case "accept-language":
285 user_languages = val.Split (','); // yes, only split with a ','
288 accept_types = val.Split (','); // yes, only split with a ','
290 case "content-length":
292 //TODO: max. content_length?
293 content_length = Int64.Parse (val.Trim ());
294 if (content_length < 0)
295 context.ErrorMessage = "Invalid Content-Length.";
298 context.ErrorMessage = "Invalid Content-Length.";
304 referrer = new Uri (val);
306 referrer = new Uri ("http://someone.is.screwing.with.the.headers.com/");
311 cookies = new CookieCollection();
313 string[] cookieStrings = val.Split(new char[] {',', ';'});
314 Cookie current = null;
316 foreach (string cookieString in cookieStrings) {
317 string str = cookieString.Trim ();
320 if (str.StartsWith ("$Version")) {
321 version = Int32.Parse (Unquote (str.Substring (str.IndexOf ('=') + 1)));
322 } else if (str.StartsWith ("$Path")) {
324 current.Path = str.Substring (str.IndexOf ('=') + 1).Trim ();
325 } else if (str.StartsWith ("$Domain")) {
327 current.Domain = str.Substring (str.IndexOf ('=') + 1).Trim ();
328 } else if (str.StartsWith ("$Port")) {
330 current.Port = str.Substring (str.IndexOf ('=') + 1).Trim ();
332 if (current != null) {
333 cookies.Add (current);
335 current = new Cookie ();
336 int idx = str.IndexOf ('=');
338 current.Name = str.Substring (0, idx).Trim ();
339 current.Value = str.Substring (idx + 1).Trim ();
341 current.Name = str.Trim ();
342 current.Value = String.Empty;
344 current.Version = version;
347 if (current != null) {
348 cookies.Add (current);
354 // returns true is the stream could be reused.
355 internal bool FlushInput ()
361 if (content_length > 0)
362 length = (int) Math.Min (content_length, (long) length);
364 byte [] bytes = new byte [length];
366 // TODO: test if MS has a timeout when doing this
368 IAsyncResult ares = InputStream.BeginRead (bytes, 0, length, null, null);
369 if (!ares.IsCompleted && !ares.AsyncWaitHandle.WaitOne (1000))
371 if (InputStream.EndRead (ares) <= 0)
373 } catch (ObjectDisposedException) {
382 public string [] AcceptTypes {
383 get { return accept_types; }
386 public int ClientCertificateError {
388 HttpConnection cnc = context.Connection;
389 if (cnc.ClientCertificate == null)
390 throw new InvalidOperationException ("No client certificate");
391 int [] errors = cnc.ClientCertificateErrors;
392 if (errors != null && errors.Length > 0)
398 public Encoding ContentEncoding {
400 if (content_encoding == null)
401 content_encoding = Encoding.Default;
402 return content_encoding;
406 public long ContentLength64 {
407 get { return is_chunked ? -1 : content_length; }
410 public string ContentType {
411 get { return headers ["content-type"]; }
414 public CookieCollection Cookies {
416 // TODO: check if the collection is read-only
418 cookies = new CookieCollection ();
423 public bool HasEntityBody {
424 get { return (content_length > 0 || is_chunked); }
427 public NameValueCollection Headers {
428 get { return headers; }
431 public string HttpMethod {
432 get { return method; }
435 public Stream InputStream {
437 if (input_stream == null) {
438 if (is_chunked || content_length > 0)
439 input_stream = context.Connection.GetRequestStream (is_chunked, content_length);
441 input_stream = Stream.Null;
448 [MonoTODO ("Always returns false")]
449 public bool IsAuthenticated {
450 get { return false; }
453 public bool IsLocal {
454 get { return LocalEndPoint.Address.Equals (RemoteEndPoint.Address); }
457 public bool IsSecureConnection {
458 get { return context.Connection.IsSecure; }
461 public bool KeepAlive {
467 // 1. Connection header
468 // 2. Protocol (1.1 == keep-alive by default)
469 // 3. Keep-Alive header
470 string cnc = headers ["Connection"];
471 if (!String.IsNullOrEmpty (cnc)) {
472 keep_alive = (0 == String.Compare (cnc, "keep-alive", StringComparison.OrdinalIgnoreCase));
473 } else if (version == HttpVersion.Version11) {
476 cnc = headers ["keep-alive"];
477 if (!String.IsNullOrEmpty (cnc))
478 keep_alive = (0 != String.Compare (cnc, "closed", StringComparison.OrdinalIgnoreCase));
484 public IPEndPoint LocalEndPoint {
485 get { return context.Connection.LocalEndPoint; }
488 public Version ProtocolVersion {
489 get { return version; }
492 public NameValueCollection QueryString {
493 get { return query_string; }
496 public string RawUrl {
497 get { return raw_url; }
500 public IPEndPoint RemoteEndPoint {
501 get { return context.Connection.RemoteEndPoint; }
504 [MonoTODO ("Always returns Guid.Empty")]
505 public Guid RequestTraceIdentifier {
506 get { return Guid.Empty; }
513 public Uri UrlReferrer {
514 get { return referrer; }
517 public string UserAgent {
518 get { return headers ["user-agent"]; }
521 public string UserHostAddress {
522 get { return LocalEndPoint.ToString (); }
525 public string UserHostName {
526 get { return headers ["host"]; }
529 public string [] UserLanguages {
530 get { return user_languages; }
533 public IAsyncResult BeginGetClientCertificate (AsyncCallback requestCallback, object state)
535 if (gcc_delegate == null)
536 gcc_delegate = new GCCDelegate (GetClientCertificate);
537 return gcc_delegate.BeginInvoke (requestCallback, state);
540 public X509Certificate2 EndGetClientCertificate (IAsyncResult asyncResult)
542 if (asyncResult == null)
543 throw new ArgumentNullException ("asyncResult");
545 if (gcc_delegate == null)
546 throw new InvalidOperationException ();
548 return gcc_delegate.EndInvoke (asyncResult);
551 public X509Certificate2 GetClientCertificate ()
553 return context.Connection.ClientCertificate;
557 public string ServiceName {
563 public TransportContext TransportContext {
565 return new Context ();
570 public bool IsWebSocketRequest {
576 public Task<X509Certificate2> GetClientCertificateAsync ()
578 return Task<X509Certificate2>.Factory.FromAsync (BeginGetClientCertificate, EndGetClientCertificate, null);