363 lines
9.3 KiB
C#
363 lines
9.3 KiB
C#
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//
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// System.Net.Cookie.cs
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//
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// Authors:
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// Lawrence Pit (loz@cable.a2000.nl)
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// Gonzalo Paniagua Javier (gonzalo@ximian.com)
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// Daniel Nauck (dna(at)mono-project(dot)de)
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// Sebastien Pouliot <sebastien@ximian.com>
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//
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// Copyright (C) 2004,2009 Novell, Inc (http://www.novell.com)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Text;
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using System.Globalization;
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using System.Collections;
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namespace System.Net {
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// Supported cookie formats are:
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// Netscape: http://home.netscape.com/newsref/std/cookie_spec.html
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// RFC 2109: http://www.ietf.org/rfc/rfc2109.txt
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// RFC 2965: http://www.ietf.org/rfc/rfc2965.txt
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[Serializable]
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public sealed class Cookie
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{
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string comment;
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Uri commentUri;
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bool discard;
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string domain;
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DateTime expires;
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bool httpOnly;
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string name;
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string path;
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string port;
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int [] ports;
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bool secure;
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DateTime timestamp;
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string val;
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int version;
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static char [] reservedCharsName = new char [] {' ', '=', ';', ',', '\n', '\r', '\t'};
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static char [] portSeparators = new char [] {'"', ','};
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static string tspecials = "()<>@,;:\\\"/[]?={} \t"; // from RFC 2965, 2068
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public Cookie ()
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{
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expires = DateTime.MinValue;
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timestamp = DateTime.Now;
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domain = String.Empty;
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name = String.Empty;
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val = String.Empty;
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comment = String.Empty;
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port = String.Empty;
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}
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public Cookie (string name, string value)
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: this ()
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{
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Name = name;
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Value = value;
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}
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public Cookie (string name, string value, string path)
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: this (name, value)
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{
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Path = path;
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}
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public Cookie (string name, string value, string path, string domain)
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: this (name, value, path)
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{
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Domain = domain;
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}
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public string Comment {
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get { return comment; }
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set { comment = value == null ? String.Empty : value; }
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}
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public Uri CommentUri {
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get { return commentUri; }
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set { commentUri = value; }
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}
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public bool Discard {
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get { return discard; }
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set { discard = value; }
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}
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public string Domain {
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get { return domain; }
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set {
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if (String.IsNullOrEmpty (value)) {
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domain = String.Empty;
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HasDomain = false;
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} else {
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domain = value;
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IPAddress test;
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if (IPAddress.TryParse (value, out test))
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HasDomain = false;
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else
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HasDomain = true;
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}
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}
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}
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/*
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* Set this to false to disable same-origin checks.
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*
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* This should be done whenever the cookie does not actually
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* contain a domain and we fallback to the Uri's hostname.
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*
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*/
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internal bool HasDomain {
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get; set;
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}
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public bool Expired {
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get {
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return expires <= DateTime.Now &&
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expires != DateTime.MinValue;
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}
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set {
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if (value)
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expires = DateTime.Now;
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}
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}
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public DateTime Expires {
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get { return expires; }
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set { expires = value; }
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}
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public bool HttpOnly {
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get { return httpOnly; }
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set { httpOnly = value; }
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}
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public string Name {
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get { return name; }
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set {
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if (String.IsNullOrEmpty (value))
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throw new CookieException ("Name cannot be empty");
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if (value [0] == '$' || value.IndexOfAny (reservedCharsName) != -1) {
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// see CookieTest, according to MS implementation
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// the name value changes even though it's incorrect
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name = String.Empty;
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throw new CookieException ("Name contains invalid characters");
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}
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name = value;
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}
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}
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public string Path {
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get { return (path == null) ? String.Empty : path; }
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set { path = (value == null) ? String.Empty : value; }
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}
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public string Port {
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get { return port; }
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set {
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if (String.IsNullOrEmpty (value)) {
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port = String.Empty;
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return;
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}
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if (value [0] != '"' || value [value.Length - 1] != '"') {
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throw new CookieException("The 'Port'='" + value + "' part of the cookie is invalid. Port must be enclosed by double quotes.");
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}
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port = value;
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string [] values = port.Split (portSeparators);
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ports = new int[values.Length];
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for (int i = 0; i < ports.Length; i++) {
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ports [i] = Int32.MinValue;
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if (values [i].Length == 0)
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continue;
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try {
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ports [i] = Int32.Parse (values [i]);
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} catch (Exception e) {
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throw new CookieException("The 'Port'='" + value + "' part of the cookie is invalid. Invalid value: " + values [i], e);
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}
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}
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Version = 1;
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}
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}
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internal int [] Ports {
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get { return ports; }
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set { ports = value; }
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}
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public bool Secure {
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get { return secure; }
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set { secure = value; }
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}
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public DateTime TimeStamp {
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get { return timestamp; }
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}
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public string Value {
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get { return val; }
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set {
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if (value == null) {
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val = String.Empty;
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return;
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}
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// LAMESPEC: According to .Net specs the Value property should not accept
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// the semicolon and comma characters, yet it does. For now we'll follow
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// the behaviour of MS.Net instead of the specs.
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/*
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if (value.IndexOfAny(reservedCharsValue) != -1)
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throw new CookieException("Invalid value. Value cannot contain semicolon or comma characters.");
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*/
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val = value;
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}
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}
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public int Version {
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get { return version; }
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set {
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if ((value < 0) || (value > 10))
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version = 0;
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else
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version = value;
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}
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}
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public override bool Equals (Object comparand)
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{
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System.Net.Cookie c = comparand as System.Net.Cookie;
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return c != null &&
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String.Compare (this.name, c.name, true, CultureInfo.InvariantCulture) == 0 &&
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String.Compare (this.val, c.val, false, CultureInfo.InvariantCulture) == 0 &&
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String.Compare (this.Path, c.Path, false, CultureInfo.InvariantCulture) == 0 &&
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String.Compare (this.domain, c.domain, true, CultureInfo.InvariantCulture) == 0 &&
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this.version == c.version;
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}
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public override int GetHashCode ()
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{
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return hash(CaseInsensitiveHashCodeProvider.DefaultInvariant.GetHashCode(name),
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val.GetHashCode (),
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Path.GetHashCode (),
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CaseInsensitiveHashCodeProvider.DefaultInvariant.GetHashCode (domain),
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version);
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}
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private static int hash (int i, int j, int k, int l, int m)
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{
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return i ^ (j << 13 | j >> 19) ^ (k << 26 | k >> 6) ^ (l << 7 | l >> 25) ^ (m << 20 | m >> 12);
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}
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// returns a string that can be used to send a cookie to an Origin Server
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// i.e., only used for clients
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// see para 4.2.2 of RFC 2109 and para 3.3.4 of RFC 2965
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// see also bug #316017
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public override string ToString ()
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{
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return ToString (null);
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}
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internal string ToString (Uri uri)
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{
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if (name.Length == 0)
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return String.Empty;
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StringBuilder result = new StringBuilder (64);
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if (version > 0)
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result.Append ("$Version=").Append (version).Append ("; ");
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result.Append (name).Append ("=").Append (val);
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if (version == 0)
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return result.ToString ();
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if (!String.IsNullOrEmpty (path))
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result.Append ("; $Path=").Append (path);
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bool append_domain = (uri == null) || (uri.Host != domain);
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if (append_domain && !String.IsNullOrEmpty (domain))
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result.Append ("; $Domain=").Append (domain);
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if (port != null && port.Length != 0)
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result.Append ("; $Port=").Append (port);
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return result.ToString ();
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}
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internal string ToClientString ()
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{
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if (name.Length == 0)
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return String.Empty;
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StringBuilder result = new StringBuilder (64);
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if (version > 0)
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result.Append ("Version=").Append (version).Append (";");
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result.Append (name).Append ("=").Append (val);
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if (path != null && path.Length != 0)
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result.Append (";Path=").Append (QuotedString (path));
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if (domain != null && domain.Length != 0)
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result.Append (";Domain=").Append (QuotedString (domain));
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if (port != null && port.Length != 0)
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result.Append (";Port=").Append (port);
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return result.ToString ();
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}
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// See par 3.6 of RFC 2616
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string QuotedString (string value)
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{
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if (version == 0 || IsToken (value))
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return value;
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else
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return "\"" + value.Replace("\"", "\\\"") + "\"";
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}
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bool IsToken (string value)
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{
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int len = value.Length;
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for (int i = 0; i < len; i++) {
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char c = value [i];
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if (c < 0x20 || c >= 0x7f || tspecials.IndexOf (c) != -1)
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return false;
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}
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return true;
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}
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}
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}
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