310 lines
8.5 KiB
C#
310 lines
8.5 KiB
C#
//
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// System.Web.Configuration.HttpHandlerAction
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//
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// Authors:
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// Chris Toshok (toshok@ximian.com)
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// Daniel Nauck (dna(at)mono-project(dot)de)
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//
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// (C) 2005 Novell, Inc (http://www.novell.com)
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// (C) 2008 Daniel Nauck
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Configuration;
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using System.Reflection;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Web;
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using System.Web.Util;
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namespace System.Web.Configuration
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{
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public sealed class HttpHandlerAction: ConfigurationElement
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{
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static ConfigurationPropertyCollection _properties;
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static ConfigurationProperty pathProp;
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static ConfigurationProperty typeProp;
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static ConfigurationProperty validateProp;
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static ConfigurationProperty verbProp;
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static HttpHandlerAction ()
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{
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pathProp = new ConfigurationProperty ("path", typeof (string), null,
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TypeDescriptor.GetConverter (typeof (string)),
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PropertyHelper.NonEmptyStringValidator,
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ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey);
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typeProp = new ConfigurationProperty ("type", typeof (string), null,
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TypeDescriptor.GetConverter (typeof (string)),
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PropertyHelper.NonEmptyStringValidator,
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ConfigurationPropertyOptions.IsRequired);
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validateProp = new ConfigurationProperty ("validate", typeof (bool), true);
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verbProp = new ConfigurationProperty ("verb", typeof (string), null,
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TypeDescriptor.GetConverter (typeof (string)),
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PropertyHelper.NonEmptyStringValidator,
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ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey);
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_properties = new ConfigurationPropertyCollection ();
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_properties.Add (pathProp);
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_properties.Add (typeProp);
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_properties.Add (validateProp);
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_properties.Add (verbProp);
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}
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internal HttpHandlerAction ()
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{ }
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public HttpHandlerAction (string path, string type, string verb)
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: this (path, type, verb, true)
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{ }
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public HttpHandlerAction (string path, string type, string verb, bool validate)
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{
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Path = path;
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Type = type;
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Verb = verb;
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Validate = validate;
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}
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[ConfigurationProperty ("path", Options = ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey)]
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// LAMESPEC: MS lists no validator here but provides one in Properties.
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public string Path {
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get { return (string) base[pathProp]; }
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set { base[pathProp] = value; }
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}
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[ConfigurationProperty ("type", Options = ConfigurationPropertyOptions.IsRequired)]
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// LAMESPEC: MS lists no validator here but provides one in Properties.
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public string Type {
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get { return (string) base[typeProp]; }
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set { base[typeProp] = value; }
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}
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[ConfigurationProperty ("validate", DefaultValue = true)]
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public bool Validate {
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get { return (bool) base[validateProp]; }
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set { base[validateProp] = value; }
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}
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[ConfigurationProperty ("verb", Options = ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey)]
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// LAMESPEC: MS lists no validator here but provides one in Properties.
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public string Verb {
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get { return (string) base[verbProp]; }
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set { base[verbProp] = value; }
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}
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protected internal override ConfigurationPropertyCollection Properties {
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get { return _properties; }
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}
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#region CompatabilityCode
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object instance;
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Type type;
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string cached_verb = null;
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string[] cached_verbs;
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string[] SplitVerbs ()
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{
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if (Verb == "*")
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cached_verbs = null;
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else
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cached_verbs = Verb.Split (',');
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return cached_verbs;
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}
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internal string[] Verbs {
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get {
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if (cached_verb != Verb) {
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cached_verbs = SplitVerbs();
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cached_verb = Verb;
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}
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return cached_verbs;
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}
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}
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//
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// Loads the a type by name and verifies that it implements
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// IHttpHandler or IHttpHandlerFactory
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//
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internal static Type LoadType (string type_name)
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{
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Type t = null;
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t = HttpApplication.LoadType (type_name, false);
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if (t == null)
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throw new HttpException (String.Format ("Failed to load httpHandler type `{0}'", type_name));
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if (typeof (IHttpHandler).IsAssignableFrom (t) ||
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typeof (IHttpHandlerFactory).IsAssignableFrom (t))
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return t;
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throw new HttpException (String.Format ("Type {0} does not implement IHttpHandler or IHttpHandlerFactory", type_name));
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}
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internal bool PathMatches (string pathToMatch)
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{
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if (String.IsNullOrEmpty (pathToMatch))
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return false;
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bool result = false;
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string[] handlerPaths = Path.Split (',');
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int slash = pathToMatch.LastIndexOf ('/');
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string origPathToMatch = pathToMatch;
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string noLeadingSlashPathToMatch = null;
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if (slash != -1)
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pathToMatch = pathToMatch.Substring (slash);
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SearchPattern sp = null;
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foreach (string handlerPath in handlerPaths)
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{
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if (handlerPath.Length == 0)
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continue;
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if (handlerPath == "*") {
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result = true;
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break;
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}
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string matchExact = null;
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string endsWith = null;
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if (handlerPath.Length > 0)
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{
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if (handlerPath [0] == '*' && (handlerPath.IndexOf ('*', 1) == -1))
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endsWith = handlerPath.Substring (1);
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if (handlerPath.IndexOf ('*') == -1)
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if (handlerPath [0] != '/')
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{
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HttpContext ctx = HttpContext.Current;
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HttpRequest req = ctx != null ? ctx.Request : null;
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string vpath = req != null ? req.BaseVirtualDir : HttpRuntime.AppDomainAppVirtualPath;
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if (vpath == "/")
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vpath = String.Empty;
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matchExact = String.Concat (vpath, "/", handlerPath);
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}
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}
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if (matchExact != null)
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{
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result = matchExact.Length == origPathToMatch.Length && StrUtils.EndsWith (origPathToMatch, matchExact, true);
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if (result == true)
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break;
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else
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continue;
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}
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else if (endsWith != null)
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{
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result = StrUtils.EndsWith (pathToMatch, endsWith, true);
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if (result == true)
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break;
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else
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continue;
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}
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string pattern;
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if (handlerPath [0] == '/')
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pattern = handlerPath.Substring (1);
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else
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pattern = handlerPath;
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if (sp == null)
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sp = new SearchPattern (pattern, true);
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else
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sp.SetPattern (pattern, true);
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if (noLeadingSlashPathToMatch == null) {
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if (origPathToMatch [0] == '/')
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noLeadingSlashPathToMatch = origPathToMatch.Substring (1);
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else
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noLeadingSlashPathToMatch = origPathToMatch;
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}
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if (pattern.IndexOf ('/') >= 0)
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noLeadingSlashPathToMatch = AdjustPath (pattern, noLeadingSlashPathToMatch);
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if (sp.IsMatch (noLeadingSlashPathToMatch)) {
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result = true;
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break;
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}
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}
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return result;
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}
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static string AdjustPath (string pattern, string path)
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{
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int nslashes = 0;
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foreach (char c in pattern)
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if (c == '/')
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nslashes++;
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int i;
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for (i = path.Length - 1; i >= 0; i--) {
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if (path [i] == '/') {
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nslashes--;
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if (nslashes == -1)
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break;
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}
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}
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if (nslashes >= 0 || i == 0)
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return path;
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return path.Substring (i + 1);
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}
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// Loads the handler, possibly delay-loaded.
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internal object GetHandlerInstance ()
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{
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IHttpHandler ihh = instance as IHttpHandler;
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if (instance == null || (ihh != null && !ihh.IsReusable)){
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if (type == null)
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type = LoadType (Type);
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instance = Activator.CreateInstance (type,
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BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance,
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null, null, null);
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}
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return instance;
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}
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#endregion
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}
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}
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