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Diffstat (limited to 'OpenSim/Data/Tests/PropertyScrambler.cs')
-rw-r--r-- | OpenSim/Data/Tests/PropertyScrambler.cs | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/OpenSim/Data/Tests/PropertyScrambler.cs b/OpenSim/Data/Tests/PropertyScrambler.cs new file mode 100644 index 0000000..72aaff1 --- /dev/null +++ b/OpenSim/Data/Tests/PropertyScrambler.cs | |||
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1 | /* | ||
2 | * Copyright (c) Contributors, http://opensimulator.org/ | ||
3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions are met: | ||
7 | * * Redistributions of source code must retain the above copyright | ||
8 | * notice, this list of conditions and the following disclaimer. | ||
9 | * * Redistributions in binary form must reproduce the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer in the | ||
11 | * documentation and/or other materials provided with the distribution. | ||
12 | * * Neither the name of the OpenSimulator Project nor the | ||
13 | * names of its contributors may be used to endorse or promote products | ||
14 | * derived from this software without specific prior written permission. | ||
15 | * | ||
16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY | ||
17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY | ||
20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | using System; | ||
29 | using System.Collections; | ||
30 | using System.Collections.Generic; | ||
31 | using System.Linq.Expressions; | ||
32 | using System.Reflection; | ||
33 | using System.Text; | ||
34 | using NUnit.Framework; | ||
35 | using NUnit.Framework.SyntaxHelpers; | ||
36 | using OpenMetaverse; | ||
37 | using OpenSim.Framework; | ||
38 | |||
39 | namespace OpenSim.Data.Tests | ||
40 | { | ||
41 | |||
42 | //This is generic so that the lambda expressions will work right in IDEs. | ||
43 | public class PropertyScrambler<T> | ||
44 | { | ||
45 | readonly System.Collections.Generic.List<string> membersToNotScramble = new List<string>(); | ||
46 | |||
47 | private void AddExpressionToNotScrableList(Expression expression) | ||
48 | { | ||
49 | UnaryExpression unaryExpression = expression as UnaryExpression; | ||
50 | if (unaryExpression != null) | ||
51 | { | ||
52 | AddExpressionToNotScrableList(unaryExpression.Operand); | ||
53 | return; | ||
54 | } | ||
55 | |||
56 | MemberExpression memberExpression = expression as MemberExpression; | ||
57 | if (memberExpression != null) | ||
58 | { | ||
59 | if (!(memberExpression.Member is PropertyInfo)) | ||
60 | { | ||
61 | throw new NotImplementedException("I don't know how deal with a MemberExpression that is a " + expression.Type); | ||
62 | } | ||
63 | membersToNotScramble.Add(memberExpression.Member.Name); | ||
64 | return; | ||
65 | } | ||
66 | |||
67 | throw new NotImplementedException("I don't know how to parse a " + expression.Type); | ||
68 | } | ||
69 | |||
70 | public PropertyScrambler<T> DontScramble(Expression<Func<T, object>> expression) | ||
71 | { | ||
72 | AddExpressionToNotScrableList(expression.Body); | ||
73 | return this; | ||
74 | } | ||
75 | |||
76 | public void Scramble(T obj) | ||
77 | { | ||
78 | internalScramble(obj); | ||
79 | } | ||
80 | |||
81 | private void internalScramble(object obj) | ||
82 | { | ||
83 | PropertyInfo[] properties = obj.GetType().GetProperties(); | ||
84 | foreach (var property in properties) | ||
85 | { | ||
86 | //Skip indexers of classes. We will assume that everything that has an indexer | ||
87 | // is also IEnumberable. May not always be true, but should be true normally. | ||
88 | if (property.GetIndexParameters().Length > 0) | ||
89 | continue; | ||
90 | |||
91 | RandomizeProperty(obj, property, null); | ||
92 | } | ||
93 | //Now if it implments IEnumberable, it's probably some kind of list, so we should randomize | ||
94 | // everything inside of it. | ||
95 | IEnumerable enumerable = obj as IEnumerable; | ||
96 | if (enumerable != null) | ||
97 | { | ||
98 | foreach (object value in enumerable) | ||
99 | { | ||
100 | internalScramble(value); | ||
101 | } | ||
102 | } | ||
103 | } | ||
104 | |||
105 | private readonly Random random = new Random(); | ||
106 | private void RandomizeProperty(object obj, PropertyInfo property, object[] index) | ||
107 | {//I'd like a better way to compare, but I had lots of problems with InventoryFolderBase because the ID is inherited. | ||
108 | if (membersToNotScramble.Contains(property.Name)) | ||
109 | return; | ||
110 | Type t = property.PropertyType; | ||
111 | if (!property.CanWrite) | ||
112 | return; | ||
113 | object value = property.GetValue(obj, index); | ||
114 | if (value == null) | ||
115 | return; | ||
116 | |||
117 | if (t == typeof(string)) | ||
118 | property.SetValue(obj, RandomName(), index); | ||
119 | else if (t == typeof(UUID)) | ||
120 | property.SetValue(obj, UUID.Random(), index); | ||
121 | else if (t == typeof(sbyte)) | ||
122 | property.SetValue(obj, (sbyte)random.Next(sbyte.MinValue, sbyte.MaxValue), index); | ||
123 | else if (t == typeof(short)) | ||
124 | property.SetValue(obj, (short)random.Next(short.MinValue, short.MaxValue), index); | ||
125 | else if (t == typeof(int)) | ||
126 | property.SetValue(obj, random.Next(), index); | ||
127 | else if (t == typeof(long)) | ||
128 | property.SetValue(obj, random.Next() * int.MaxValue, index); | ||
129 | else if (t == typeof(byte)) | ||
130 | property.SetValue(obj, (byte)random.Next(byte.MinValue, byte.MaxValue), index); | ||
131 | else if (t == typeof(ushort)) | ||
132 | property.SetValue(obj, (ushort)random.Next(ushort.MinValue, ushort.MaxValue), index); | ||
133 | else if (t == typeof(uint)) | ||
134 | property.SetValue(obj, Convert.ToUInt32(random.Next()), index); | ||
135 | else if (t == typeof(ulong)) | ||
136 | property.SetValue(obj, Convert.ToUInt64(random.Next()) * Convert.ToUInt64(UInt32.MaxValue), index); | ||
137 | else if (t == typeof(bool)) | ||
138 | property.SetValue(obj, true, index); | ||
139 | else if (t == typeof(byte[])) | ||
140 | { | ||
141 | byte[] bytes = new byte[30]; | ||
142 | random.NextBytes(bytes); | ||
143 | property.SetValue(obj, bytes, index); | ||
144 | } | ||
145 | else | ||
146 | internalScramble(value); | ||
147 | } | ||
148 | |||
149 | private string RandomName() | ||
150 | { | ||
151 | StringBuilder name = new StringBuilder(); | ||
152 | int size = random.Next(5, 12); | ||
153 | for (int i = 0; i < size; i++) | ||
154 | { | ||
155 | char ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65))); | ||
156 | name.Append(ch); | ||
157 | } | ||
158 | return name.ToString(); | ||
159 | } | ||
160 | } | ||
161 | |||
162 | [TestFixture] | ||
163 | public class PropertyScramblerTests | ||
164 | { | ||
165 | [Test] | ||
166 | public void TestScramble() | ||
167 | { | ||
168 | AssetBase actual = new AssetBase(UUID.Random(), "asset one"); | ||
169 | new PropertyScrambler<AssetBase>().Scramble(actual); | ||
170 | } | ||
171 | |||
172 | [Test] | ||
173 | public void DontScramble() | ||
174 | { | ||
175 | UUID uuid = UUID.Random(); | ||
176 | AssetBase asset = new AssetBase(); | ||
177 | asset.FullID = uuid; | ||
178 | new PropertyScrambler<AssetBase>() | ||
179 | .DontScramble(x => x.Metadata) | ||
180 | .DontScramble(x => x.FullID) | ||
181 | .DontScramble(x => x.ID) | ||
182 | .Scramble(asset); | ||
183 | Assert.That(asset.FullID, Is.EqualTo(uuid)); | ||
184 | } | ||
185 | } | ||
186 | } \ No newline at end of file | ||