2 // System.Web.Services.Protocols.SoapExtension.cs
5 // Tim Coleman (tim@timcoleman.com)
7 // Copyright (C) Tim Coleman, 2002
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System.Collections;
33 using System.Web.Services.Configuration;
35 namespace System.Web.Services.Protocols {
36 public abstract class SoapExtension {
46 protected SoapExtension ()
50 #endregion // Constructors
54 public virtual Stream ChainStream (Stream stream)
59 public abstract object GetInitializer (Type serviceType);
60 public abstract object GetInitializer (LogicalMethodInfo methodInfo, SoapExtensionAttribute attribute);
61 public abstract void Initialize (object initializer);
62 public abstract void ProcessMessage (SoapMessage message);
65 static ArrayList[] globalExtensions;
67 internal static SoapExtension[] CreateExtensionChain (SoapExtensionRuntimeConfig[] extensionConfigs)
69 if (extensionConfigs == null) return null;
70 SoapExtension[] res = new SoapExtension [extensionConfigs.Length];
71 CreateExtensionChain (extensionConfigs, res, 0);
75 internal static SoapExtension[] CreateExtensionChain (SoapExtensionRuntimeConfig[] hiPrioExts, SoapExtensionRuntimeConfig[] medPrioExts, SoapExtensionRuntimeConfig[] lowPrioExts)
78 if (hiPrioExts != null) len += hiPrioExts.Length;
79 if (medPrioExts != null) len += medPrioExts.Length;
80 if (lowPrioExts != null) len += lowPrioExts.Length;
81 if (len == 0) return null;
83 SoapExtension[] res = new SoapExtension [len];
85 if (hiPrioExts != null) pos = CreateExtensionChain (hiPrioExts, res, pos);
86 if (medPrioExts != null) pos = CreateExtensionChain (medPrioExts, res, pos);
87 if (lowPrioExts != null) pos = CreateExtensionChain (lowPrioExts, res, pos);
91 static int CreateExtensionChain (SoapExtensionRuntimeConfig[] extensionConfigs, SoapExtension[] destArray, int pos)
93 for (int n=0; n<extensionConfigs.Length; n++)
95 SoapExtensionRuntimeConfig econf = extensionConfigs [n];
96 SoapExtension ext = (SoapExtension) Activator.CreateInstance (econf.Type);
97 ext.Initialize (econf.InitializationInfo);
98 destArray [pos++] = ext;
104 static void InitializeGlobalExtensions ()
106 globalExtensions = new ArrayList[2];
108 if (WebServicesSection.Current == null) return;
110 SoapExtensionTypeElementCollection exts = WebServicesSection.Current.SoapExtensionTypes;
112 ArrayList exts = WSConfig.Instance.ExtensionTypes;
114 if (exts == null) return;
117 foreach (SoapExtensionTypeElement econf in exts)
119 foreach (WSExtensionConfig econf in exts)
122 if (globalExtensions [(int)econf.Group] == null) globalExtensions [(int)econf.Group] = new ArrayList ();
123 ArrayList destList = globalExtensions [(int) econf.Group];
125 for (int n=0; n<destList.Count && !added; n++)
127 if (((SoapExtensionTypeElement)destList [n]).Priority > econf.Priority) {
129 if (((WSExtensionConfig)destList [n]).Priority > econf.Priority) {
131 destList.Insert (n, econf);
134 if (!added) destList.Add (econf);
138 internal static SoapExtensionRuntimeConfig[][] GetTypeExtensions (Type serviceType)
140 if (globalExtensions == null) InitializeGlobalExtensions();
142 SoapExtensionRuntimeConfig[][] exts = new SoapExtensionRuntimeConfig[2][];
144 for (int group = 0; group < 2; group++)
146 ArrayList globList = globalExtensions[group];
147 if (globList == null) continue;
148 exts [group] = new SoapExtensionRuntimeConfig [globList.Count];
149 for (int n=0; n<globList.Count; n++)
152 SoapExtensionTypeElement econf = (SoapExtensionTypeElement) globList [n];
154 WSExtensionConfig econf = (WSExtensionConfig) globList [n];
156 SoapExtensionRuntimeConfig typeconf = new SoapExtensionRuntimeConfig ();
157 typeconf.Type = econf.Type;
158 SoapExtension ext = (SoapExtension) Activator.CreateInstance (econf.Type);
159 typeconf.InitializationInfo = ext.GetInitializer (serviceType);
160 exts [group][n] = typeconf;
167 internal static SoapExtensionRuntimeConfig[] GetMethodExtensions (LogicalMethodInfo method)
169 object[] ats = method.GetCustomAttributes (typeof (SoapExtensionAttribute));
170 SoapExtensionRuntimeConfig[] exts = new SoapExtensionRuntimeConfig [ats.Length];
171 int[] priorities = new int[ats.Length];
173 for (int n=0; n<ats.Length; n++)
175 SoapExtensionAttribute at = (SoapExtensionAttribute) ats[n];
176 SoapExtensionRuntimeConfig econf = new SoapExtensionRuntimeConfig ();
177 econf.Type = at.ExtensionType;
178 priorities [n] = at.Priority;
179 SoapExtension ext = (SoapExtension) Activator.CreateInstance (econf.Type);
180 econf.InitializationInfo = ext.GetInitializer (method, at);
183 Array.Sort (priorities, exts);
187 internal static Stream ExecuteChainStream (SoapExtension[] extensions, Stream stream)
189 if (extensions == null) return stream;
191 Stream newStream = stream;
192 foreach (SoapExtension ext in extensions)
193 newStream = ext.ChainStream (newStream);
197 internal static void ExecuteProcessMessage(SoapExtension[] extensions, SoapMessage message, Stream stream, bool inverseOrder)
199 if (extensions == null) return;
201 message.InternalStream = stream;
205 for (int n = extensions.Length-1; n >= 0; n--)
206 extensions[n].ProcessMessage (message);
210 for (int n = 0; n < extensions.Length; n++)
211 extensions[n].ProcessMessage (message);
215 #endregion // Methods
218 internal class SoapExtensionRuntimeConfig
222 public object InitializationInfo;