Mono.Zeroconf – Blame information for rev 2
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1 | office | 1 | // |
2 | // ServiceBrowser.cs |
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3 | // |
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4 | // Author: |
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5 | // Aaron Bockover <abockover@novell.com> |
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6 | // |
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7 | // Copyright (C) 2007-2008 Novell, Inc. |
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8 | // |
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9 | // Permission is hereby granted, free of charge, to any person obtaining |
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10 | // a copy of this software and associated documentation files (the |
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11 | // "Software"), to deal in the Software without restriction, including |
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12 | // without limitation the rights to use, copy, modify, merge, publish, |
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13 | // distribute, sublicense, and/or sell copies of the Software, and to |
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14 | // permit persons to whom the Software is furnished to do so, subject to |
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15 | // the following conditions: |
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16 | // |
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17 | // The above copyright notice and this permission notice shall be |
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18 | // included in all copies or substantial portions of the Software. |
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19 | // |
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20 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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21 | // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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22 | // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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23 | // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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24 | // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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25 | // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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26 | // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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27 | // |
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28 | |||
29 | using System; |
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30 | using System.Threading; |
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31 | using NDesk.DBus; |
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32 | |||
33 | namespace Mono.Zeroconf.Providers.AvahiDBus |
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34 | { |
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35 | public class RegisterService : Service, IRegisterService |
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36 | { |
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37 | private ushort port; |
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38 | private IAvahiEntryGroup entry_group; |
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39 | |||
40 | public event RegisterServiceEventHandler Response; |
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2 | office | 41 | |
42 | private string originalName; |
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43 | private int retryNameModifier = 2; |
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44 | |||
1 | office | 45 | public RegisterService () |
46 | { |
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47 | } |
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48 | |||
49 | public RegisterService (string name, string regtype, string replyDomain, int @interface, Protocol aprotocol) |
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50 | : base (name, regtype, replyDomain, @interface, aprotocol) |
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51 | { |
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52 | } |
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53 | |||
54 | public void Register () |
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55 | { |
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56 | RegisterDBus (); |
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57 | |||
58 | byte [][] txt_record = TxtRecord == null |
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59 | ? new byte[0][] |
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60 | : Mono.Zeroconf.Providers.AvahiDBus.TxtRecord.Render (TxtRecord); |
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61 | |||
62 | entry_group.AddService (AvahiInterface, AvahiProtocol, PublishFlags.None, |
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63 | Name ?? String.Empty, RegType ?? String.Empty, ReplyDomain ?? String.Empty, |
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64 | String.Empty, port, txt_record); |
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65 | |||
66 | entry_group.Commit (); |
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67 | } |
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68 | |||
69 | private void RegisterDBus () |
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70 | { |
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71 | try { |
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72 | Monitor.Enter (this); |
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73 | DBusManager.Bus.TrapSignals (); |
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74 | |||
75 | if (entry_group != null) { |
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76 | entry_group.Reset (); |
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77 | return; |
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78 | } |
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79 | |||
80 | if (DBusManager.Server.GetState () != AvahiServerState.Running) { |
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81 | throw new ApplicationException ("Avahi Server is not in the Running state"); |
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82 | } |
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83 | |||
84 | ObjectPath path = DBusManager.Server.EntryGroupNew (); |
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85 | entry_group = DBusManager.GetObject<IAvahiEntryGroup> (path); |
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86 | |||
87 | Monitor.Exit (this); |
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88 | |||
89 | entry_group.StateChanged += OnEntryGroupStateChanged; |
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90 | } finally { |
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91 | Monitor.Exit (this); |
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92 | DBusManager.Bus.UntrapSignals (); |
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93 | } |
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94 | } |
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95 | |||
96 | private void OnEntryGroupStateChanged (EntryGroupState state, string error) |
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97 | { |
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98 | switch (state) { |
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99 | case EntryGroupState.Collision: |
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100 | if (!OnResponse (ErrorCode.Collision)) { |
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2 | office | 101 | if (originalName == null) |
102 | originalName = Name; |
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103 | |||
104 | Name = originalName + " (" + retryNameModifier + ")"; |
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105 | retryNameModifier++; |
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106 | |||
107 | Console.WriteLine("ZeroConf had a name collision, trying: " + Name); |
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108 | |||
109 | Register(); |
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1 | office | 110 | } |
111 | break; |
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112 | case EntryGroupState.Failure: |
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113 | if (!OnResponse (ErrorCode.Failure)) { |
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2 | office | 114 | Console.WriteLine("Mono.ZeroConf failed to register name with AvahiDBus"); |
1 | office | 115 | } |
116 | break; |
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117 | case EntryGroupState.Established: |
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118 | OnResponse (ErrorCode.Ok); |
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119 | break; |
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120 | } |
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121 | } |
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122 | |||
123 | protected virtual bool OnResponse (ErrorCode errorCode) |
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124 | { |
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125 | RegisterServiceEventArgs args = new RegisterServiceEventArgs (); |
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126 | |||
127 | args.Service = this; |
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128 | args.IsRegistered = false; |
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129 | args.ServiceError = AvahiUtils.ErrorCodeToServiceError (errorCode); |
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130 | |||
131 | if (errorCode == ErrorCode.Ok) { |
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132 | args.IsRegistered = true; |
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133 | } |
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134 | |||
135 | RegisterServiceEventHandler handler = Response; |
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136 | if (handler != null) { |
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137 | handler (this, args); |
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138 | return true; |
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139 | } |
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140 | |||
141 | return false; |
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142 | } |
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143 | |||
144 | public void Dispose () |
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145 | { |
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146 | lock (this) { |
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147 | if (entry_group != null) { |
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148 | entry_group.Reset (); |
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149 | entry_group.Free (); |
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150 | entry_group = null; |
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151 | } |
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152 | } |
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153 | } |
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154 | |||
155 | public short Port { |
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156 | get { return (short)UPort; } |
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157 | set { UPort = (ushort)value; } |
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158 | } |
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159 | |||
160 | public ushort UPort { |
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161 | get { return port; } |
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162 | set { port = value; } |
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163 | } |
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164 | } |
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165 | } |