Mono.Zeroconf – Blame information for rev 1
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1 | office | 1 | // |
2 | // BrowseService.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) 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.Net; |
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31 | using NDesk.DBus; |
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32 | using Mono.Zeroconf; |
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33 | |||
34 | namespace Mono.Zeroconf.Providers.AvahiDBus |
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35 | { |
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36 | public class BrowseService : Service, IResolvableService, IDisposable |
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37 | { |
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38 | private string full_name; |
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39 | private IPHostEntry host_entry; |
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40 | private string host_target; |
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41 | private short port; |
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42 | private bool disposed; |
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43 | private IAvahiServiceResolver resolver; |
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44 | |||
45 | public event ServiceResolvedEventHandler Resolved; |
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46 | |||
47 | public BrowseService (string name, string regtype, string replyDomain, int @interface, Protocol aprotocol) |
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48 | : base (name, regtype, replyDomain, @interface, aprotocol) |
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49 | { |
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50 | } |
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51 | |||
52 | public void Dispose () |
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53 | { |
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54 | lock (this) { |
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55 | disposed = true; |
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56 | DisposeResolver (); |
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57 | } |
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58 | } |
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59 | |||
60 | private void DisposeResolver () |
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61 | { |
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62 | lock (this) { |
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63 | if (resolver != null) { |
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64 | resolver.Failure -= OnResolveFailure; |
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65 | resolver.Found -= OnResolveFound; |
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66 | resolver.Free (); |
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67 | resolver = null; |
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68 | } |
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69 | } |
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70 | } |
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71 | |||
72 | public void Resolve () |
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73 | { |
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74 | if (disposed) { |
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75 | throw new InvalidOperationException ("The service has been disposed and cannot be resolved. " + |
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76 | " Perhaps this service was removed?"); |
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77 | } |
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78 | |||
79 | DBusManager.Bus.TrapSignals (); |
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80 | |||
81 | lock (this) { |
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82 | if (resolver != null) { |
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83 | throw new InvalidOperationException ("The service is already running a resolve operation"); |
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84 | } |
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85 | |||
86 | ObjectPath path = DBusManager.Server.ServiceResolverNew (AvahiInterface, AvahiProtocol, |
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87 | Name ?? String.Empty, RegType ?? String.Empty, ReplyDomain ?? String.Empty, |
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88 | AvahiProtocol, LookupFlags.None); |
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89 | |||
90 | resolver = DBusManager.GetObject<IAvahiServiceResolver> (path); |
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91 | } |
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92 | |||
93 | resolver.Failure += OnResolveFailure; |
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94 | resolver.Found += OnResolveFound; |
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95 | |||
96 | DBusManager.Bus.UntrapSignals (); |
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97 | } |
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98 | |||
99 | protected virtual void OnResolved () |
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100 | { |
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101 | ServiceResolvedEventHandler handler = Resolved; |
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102 | if (handler != null) { |
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103 | handler (this, new ServiceResolvedEventArgs (this)); |
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104 | } |
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105 | } |
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106 | |||
107 | private void OnResolveFailure (string error) |
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108 | { |
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109 | DisposeResolver (); |
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110 | } |
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111 | |||
112 | private void OnResolveFound (int @interface, Protocol protocol, string name, |
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113 | string type, string domain, string host, Protocol aprotocol, string address, |
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114 | ushort port, byte [][] txt, LookupResultFlags flags) |
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115 | { |
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116 | Name = name; |
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117 | RegType = type; |
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118 | AvahiInterface = @interface; |
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119 | AvahiProtocol = protocol; |
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120 | ReplyDomain = domain; |
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121 | TxtRecord = new TxtRecord (txt); |
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122 | |||
123 | this.full_name = String.Format ("{0}.{1}.{2}", name.Replace (" ", "\\032"), type, domain); |
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124 | this.port = (short)port; |
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125 | this.host_target = host; |
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126 | |||
127 | host_entry = new IPHostEntry (); |
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128 | host_entry.AddressList = new IPAddress[1]; |
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129 | if (IPAddress.TryParse (address, out host_entry.AddressList[0]) && protocol == Protocol.IPv6) { |
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130 | host_entry.AddressList[0].ScopeId = @interface; |
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131 | } |
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132 | host_entry.HostName = host; |
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133 | |||
134 | OnResolved (); |
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135 | } |
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136 | |||
137 | public string FullName { |
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138 | get { return full_name; } |
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139 | } |
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140 | |||
141 | public IPHostEntry HostEntry { |
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142 | get { return host_entry; } |
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143 | } |
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144 | |||
145 | public string HostTarget { |
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146 | get { return host_target; } |
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147 | } |
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148 | |||
149 | public short Port { |
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150 | get { return port; } |
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151 | } |
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152 | } |
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153 | } |