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Viewing changes to mcs/class/System.Web.Mvc/System.Web.Mvc/AntiForgeryToken.cs

  • Committer: Bazaar Package Importer
  • Author(s): Mirco Bauer
  • Date: 2009-07-30 19:35:10 UTC
  • mto: (5.2.2 squeeze)
  • mto: This revision was merged to the branch mainline in revision 9.
  • Revision ID: james.westby@ubuntu.com-20090730193510-cdttfvqokq2kmdvh
Tags: upstream-2.4.2.3+dfsg
Import upstream version 2.4.2.3+dfsg

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mcs/class/System.Web.Mvc/System.Web.Mvc/AntiForgeryToken.cs
 
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namespace System.Web.Mvc {
 
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    using System;
 
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    using System.Security.Cryptography;
 
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    internal sealed class AntiForgeryToken {
 
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        private const int TokenLength = 128 / 8;
 
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        private static RNGCryptoServiceProvider _prng = new RNGCryptoServiceProvider();
 
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        private string _salt;
 
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        private string _value;
 
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        public AntiForgeryToken() {
 
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        }
 
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        // copy constructor
 
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        public AntiForgeryToken(AntiForgeryToken token) {
 
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            if (token == null) {
 
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                throw new ArgumentNullException("token");
 
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            }
 
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            CreationDate = token.CreationDate;
 
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            Salt = token.Salt;
 
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            Value = token.Value;
 
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        }
 
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        public DateTime CreationDate {
 
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            get;
 
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            set;
 
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        }
 
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        public string Salt {
 
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            get {
 
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                return _salt ?? String.Empty;
 
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            }
 
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            set {
 
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                _salt = value;
 
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            }
 
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        }
 
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        public string Value {
 
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            get {
 
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                return _value ?? String.Empty;
 
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            }
 
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            set {
 
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                _value = value;
 
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            }
 
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        }
 
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        private static string GenerateRandomTokenString() {
 
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            byte[] tokenBytes = new byte[TokenLength];
 
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            _prng.GetBytes(tokenBytes);
 
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            string token = Convert.ToBase64String(tokenBytes);
 
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            return token;
 
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        }
 
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        public static AntiForgeryToken NewToken() {
 
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            string tokenString = GenerateRandomTokenString();
 
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            return new AntiForgeryToken() {
 
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                CreationDate = DateTime.Now,
 
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                Value = tokenString
 
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            };
 
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        }
 
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    }
 
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}