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);
66 static ArrayList[] globalExtensions;
68 static ArrayList[] globalExtensions {
70 return (ArrayList[])AppDomain.CurrentDomain.GetData("SoapExtension.globalExtensions");
73 AppDomain.CurrentDomain.SetData("SoapExtension.globalExtensions", value);
78 internal static SoapExtension[] CreateExtensionChain (SoapExtensionRuntimeConfig[] extensionConfigs)
80 if (extensionConfigs == null) return null;
81 SoapExtension[] res = new SoapExtension [extensionConfigs.Length];
82 CreateExtensionChain (extensionConfigs, res, 0);
86 internal static SoapExtension[] CreateExtensionChain (SoapExtensionRuntimeConfig[] hiPrioExts, SoapExtensionRuntimeConfig[] medPrioExts, SoapExtensionRuntimeConfig[] lowPrioExts)
89 if (hiPrioExts != null) len += hiPrioExts.Length;
90 if (medPrioExts != null) len += medPrioExts.Length;
91 if (lowPrioExts != null) len += lowPrioExts.Length;
92 if (len == 0) return null;
94 SoapExtension[] res = new SoapExtension [len];
96 if (hiPrioExts != null) pos = CreateExtensionChain (hiPrioExts, res, pos);
97 if (medPrioExts != null) pos = CreateExtensionChain (medPrioExts, res, pos);
98 if (lowPrioExts != null) pos = CreateExtensionChain (lowPrioExts, res, pos);
102 static int CreateExtensionChain (SoapExtensionRuntimeConfig[] extensionConfigs, SoapExtension[] destArray, int pos)
104 for (int n=0; n<extensionConfigs.Length; n++)
106 SoapExtensionRuntimeConfig econf = extensionConfigs [n];
107 SoapExtension ext = (SoapExtension) Activator.CreateInstance (econf.Type);
108 ext.Initialize (econf.InitializationInfo);
109 destArray [pos++] = ext;
115 static void InitializeGlobalExtensions ()
117 globalExtensions = new ArrayList[2];
119 if (WebServicesSection.Current == null) return;
121 SoapExtensionTypeElementCollection exts = WebServicesSection.Current.SoapExtensionTypes;
123 ArrayList exts = WSConfig.Instance.ExtensionTypes;
125 if (exts == null) return;
128 foreach (SoapExtensionTypeElement econf in exts)
130 foreach (WSExtensionConfig econf in exts)
133 if (globalExtensions [(int)econf.Group] == null) globalExtensions [(int)econf.Group] = new ArrayList ();
134 ArrayList destList = globalExtensions [(int) econf.Group];
136 for (int n=0; n<destList.Count && !added; n++)
138 if (((SoapExtensionTypeElement)destList [n]).Priority > econf.Priority) {
140 if (((WSExtensionConfig)destList [n]).Priority > econf.Priority) {
142 destList.Insert (n, econf);
145 if (!added) destList.Add (econf);
149 internal static SoapExtensionRuntimeConfig[][] GetTypeExtensions (Type serviceType)
151 if (globalExtensions == null) InitializeGlobalExtensions();
153 SoapExtensionRuntimeConfig[][] exts = new SoapExtensionRuntimeConfig[2][];
155 for (int group = 0; group < 2; group++)
157 ArrayList globList = globalExtensions[group];
158 if (globList == null) continue;
159 exts [group] = new SoapExtensionRuntimeConfig [globList.Count];
160 for (int n=0; n<globList.Count; n++)
163 SoapExtensionTypeElement econf = (SoapExtensionTypeElement) globList [n];
165 WSExtensionConfig econf = (WSExtensionConfig) globList [n];
167 SoapExtensionRuntimeConfig typeconf = new SoapExtensionRuntimeConfig ();
168 typeconf.Type = econf.Type;
169 SoapExtension ext = (SoapExtension) Activator.CreateInstance (econf.Type);
170 typeconf.InitializationInfo = ext.GetInitializer (serviceType);
171 exts [group][n] = typeconf;
178 internal static SoapExtensionRuntimeConfig[] GetMethodExtensions (LogicalMethodInfo method)
180 object[] ats = method.GetCustomAttributes (typeof (SoapExtensionAttribute));
181 SoapExtensionRuntimeConfig[] exts = new SoapExtensionRuntimeConfig [ats.Length];
182 int[] priorities = new int[ats.Length];
184 for (int n=0; n<ats.Length; n++)
186 SoapExtensionAttribute at = (SoapExtensionAttribute) ats[n];
187 SoapExtensionRuntimeConfig econf = new SoapExtensionRuntimeConfig ();
188 econf.Type = at.ExtensionType;
189 priorities [n] = at.Priority;
190 SoapExtension ext = (SoapExtension) Activator.CreateInstance (econf.Type);
191 econf.InitializationInfo = ext.GetInitializer (method, at);
194 Array.Sort (priorities, exts);
198 internal static Stream ExecuteChainStream (SoapExtension[] extensions, Stream stream)
200 if (extensions == null) return stream;
202 Stream newStream = stream;
203 foreach (SoapExtension ext in extensions)
204 newStream = ext.ChainStream (newStream);
208 internal static void ExecuteProcessMessage(SoapExtension[] extensions, SoapMessage message, Stream stream, bool inverseOrder)
210 if (extensions == null) return;
212 message.InternalStream = stream;
216 for (int n = extensions.Length-1; n >= 0; n--)
217 extensions[n].ProcessMessage (message);
221 for (int n = 0; n < extensions.Length; n++)
222 extensions[n].ProcessMessage (message);
226 #endregion // Methods
229 internal class SoapExtensionRuntimeConfig
233 public object InitializationInfo;