Mono.Zeroconf – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | // Copyright 2007 Alp Toker <alp@atoker.com> |
2 | // This software is made available under the MIT License |
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3 | // See COPYING for details |
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4 | |||
5 | using System; |
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6 | using System.Text; |
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7 | using System.Collections.Generic; |
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8 | |||
9 | namespace NDesk.DBus |
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10 | { |
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11 | //delegate void MessageHandler (Message msg); |
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12 | |||
13 | class MatchRule |
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14 | { |
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15 | public MessageType? MessageType; |
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16 | public string Interface; |
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17 | public string Member; |
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18 | public ObjectPath Path; |
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19 | public string Sender; |
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20 | public string Destination; |
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21 | public readonly SortedDictionary<int,string> Args = new SortedDictionary<int,string> (); |
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22 | |||
23 | public MatchRule () |
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24 | { |
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25 | } |
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26 | |||
27 | void Append (StringBuilder sb, string key, string value) |
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28 | { |
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29 | if (sb.Length != 0) |
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30 | sb.Append (","); |
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31 | |||
32 | sb.Append (key + "='"); |
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33 | sb.Append (value); |
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34 | sb.Append ("'"); |
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35 | } |
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36 | |||
37 | void AppendArg (StringBuilder sb, int index, string value) |
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38 | { |
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39 | Append (sb, "arg" + index, value); |
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40 | } |
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41 | |||
42 | public override bool Equals (object o) |
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43 | { |
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44 | MatchRule r = o as MatchRule; |
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45 | |||
46 | if (r == null) |
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47 | return false; |
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48 | |||
49 | if (r.MessageType != MessageType) |
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50 | return false; |
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51 | |||
52 | if (r.Interface != Interface) |
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53 | return false; |
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54 | |||
55 | if (r.Member != Member) |
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56 | return false; |
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57 | |||
58 | //TODO: see why path comparison doesn't work |
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59 | if (r.Path.Value != Path.Value) |
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60 | //if (r.Path != Path) |
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61 | return false; |
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62 | |||
63 | if (r.Sender != Sender) |
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64 | return false; |
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65 | |||
66 | if (r.Destination != Destination) |
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67 | return false; |
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68 | |||
69 | //FIXME: do args |
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70 | |||
71 | return true; |
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72 | } |
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73 | |||
74 | public override int GetHashCode () |
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75 | { |
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76 | //FIXME: not at all optimal |
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77 | return ToString ().GetHashCode (); |
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78 | } |
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79 | |||
80 | public override string ToString () |
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81 | { |
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82 | StringBuilder sb = new StringBuilder (); |
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83 | |||
84 | if (MessageType != null) |
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85 | Append (sb, "type", MessageFilter.MessageTypeToString ((MessageType)MessageType)); |
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86 | |||
87 | if (Interface != null) |
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88 | Append (sb, "interface", Interface); |
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89 | |||
90 | if (Member != null) |
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91 | Append (sb, "member", Member); |
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92 | |||
93 | if (Path != null) |
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94 | //Append (sb, "path", Path.ToString ()); |
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95 | Append (sb, "path", Path.Value); |
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96 | |||
97 | if (Sender != null) |
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98 | Append (sb, "sender", Sender); |
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99 | |||
100 | if (Destination != null) |
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101 | Append (sb, "destination", Destination); |
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102 | |||
103 | if (Args != null) { |
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104 | foreach (KeyValuePair<int,string> pair in Args) |
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105 | AppendArg (sb, pair.Key, pair.Value); |
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106 | } |
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107 | |||
108 | return sb.ToString (); |
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109 | } |
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110 | |||
111 | //this is useful as a Predicate<Message> delegate |
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112 | public bool Matches (Message msg) |
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113 | { |
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114 | if (MessageType != null) |
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115 | if (msg.Header.MessageType != MessageType) |
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116 | return false; |
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117 | |||
118 | object value; |
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119 | |||
120 | if (Interface != null) |
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121 | if (msg.Header.Fields.TryGetValue (FieldCode.Interface, out value)) |
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122 | if ((string)value != Interface) |
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123 | return false; |
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124 | |||
125 | if (Member != null) |
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126 | if (msg.Header.Fields.TryGetValue (FieldCode.Member, out value)) |
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127 | if ((string)value != Member) |
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128 | return false; |
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129 | |||
130 | if (Path != null) |
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131 | if (msg.Header.Fields.TryGetValue (FieldCode.Path, out value)) |
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132 | //if ((ObjectPath)value != Path) |
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133 | if (((ObjectPath)value).Value != Path.Value) |
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134 | return false; |
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135 | |||
136 | if (Sender != null) |
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137 | if (msg.Header.Fields.TryGetValue (FieldCode.Sender, out value)) |
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138 | if ((string)value != Sender) |
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139 | return false; |
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140 | |||
141 | if (Destination != null) |
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142 | if (msg.Header.Fields.TryGetValue (FieldCode.Destination, out value)) |
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143 | if ((string)value != Destination) |
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144 | return false; |
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145 | |||
146 | //FIXME: do args |
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147 | |||
148 | return true; |
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149 | } |
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150 | |||
151 | //this could be made more efficient |
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152 | public static MatchRule Parse (string text) |
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153 | { |
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154 | MatchRule r = new MatchRule (); |
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155 | |||
156 | foreach (string propStr in text.Split (',')) { |
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157 | string[] parts = propStr.Split ('='); |
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158 | |||
159 | if (parts.Length < 2) |
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160 | throw new Exception ("No equals sign found"); |
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161 | if (parts.Length > 2) |
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162 | throw new Exception ("Too many equals signs found"); |
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163 | |||
164 | string key = parts[0].Trim (); |
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165 | string value = parts[1].Trim (); |
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166 | |||
167 | if (!value.StartsWith ("'") || !value.EndsWith ("'")) |
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168 | throw new Exception ("Too many equals signs found"); |
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169 | |||
170 | value = value.Substring (1, value.Length - 2); |
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171 | |||
172 | if (key.StartsWith ("arg")) { |
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173 | int argnum = Int32.Parse (key.Remove (0, "arg".Length)); |
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174 | |||
175 | if (argnum < 0 || argnum > 63) |
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176 | throw new Exception ("arg match must be between 0 and 63 inclusive"); |
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177 | |||
178 | if (r.Args.ContainsKey (argnum)) |
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179 | return null; |
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180 | |||
181 | r.Args[argnum] = value; |
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182 | |||
183 | continue; |
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184 | } |
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185 | |||
186 | //TODO: more consistent error handling |
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187 | switch (key) { |
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188 | case "type": |
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189 | if (r.MessageType != null) |
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190 | return null; |
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191 | r.MessageType = MessageFilter.StringToMessageType (value); |
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192 | break; |
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193 | case "interface": |
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194 | if (r.Interface != null) |
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195 | return null; |
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196 | r.Interface = value; |
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197 | break; |
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198 | case "member": |
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199 | if (r.Member != null) |
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200 | return null; |
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201 | r.Member = value; |
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202 | break; |
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203 | case "path": |
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204 | if (r.Path != null) |
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205 | return null; |
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206 | r.Path = new ObjectPath (value); |
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207 | break; |
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208 | case "sender": |
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209 | if (r.Sender != null) |
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210 | return null; |
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211 | r.Sender = value; |
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212 | break; |
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213 | case "destination": |
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214 | if (r.Destination != null) |
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215 | return null; |
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216 | r.Destination = value; |
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217 | break; |
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218 | default: |
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219 | if (Protocol.Verbose) |
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220 | Console.Error.WriteLine ("Warning: Unrecognized match rule key: " + key); |
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221 | break; |
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222 | } |
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223 | } |
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224 | |||
225 | return r; |
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226 | } |
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227 | } |
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228 | } |