CustomErrorsSection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / CustomErrorsSection.cs / 2 / CustomErrorsSection.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Configuration { 
    using System; 
    using System.Xml;
    using System.Configuration; 
    using System.Collections.Specialized;
    using System.Collections;
    using System.IO;
    using System.Text; 
    using System.Globalization;
    using System.Web.Util; 
    using System.Web.Configuration; 
    using System.Security.Permissions;
 
    /* From Machine.Config
     
        
    */
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomErrorsSection : ConfigurationSection { 
        private static ConfigurationPropertyCollection _properties;
 
        private static readonly ConfigurationProperty _propDefaultRedirect = 
            new ConfigurationProperty("defaultRedirect",
                                        typeof(string), 
                                        null,
                                        ConfigurationPropertyOptions.None);

        private static readonly ConfigurationProperty _propMode = 
            new ConfigurationProperty("mode",
                                        typeof(CustomErrorsMode), 
                                        CustomErrorsMode.RemoteOnly, 
                                        ConfigurationPropertyOptions.None);
 
        private static readonly ConfigurationProperty _propErrors =
            new ConfigurationProperty(null,
                                        typeof(CustomErrorCollection),
                                        null, 
                                        ConfigurationPropertyOptions.IsDefaultCollection);
 
        private string basepath = null; 
        private string _DefaultAbsolutePath = null;
        private static CustomErrorsSection _default = null; 

        static CustomErrorsSection() {
            // Property initialization
            _properties = new ConfigurationPropertyCollection(); 
            _properties.Add(_propDefaultRedirect);
            _properties.Add(_propMode); 
            _properties.Add(_propErrors); 
        }
 
        public CustomErrorsSection() {
        }

        protected override ConfigurationPropertyCollection Properties { 
            get {
                return _properties; 
            } 
        }
 
        [ConfigurationProperty("defaultRedirect")]
        public string DefaultRedirect {
            get {
                return (string)base[_propDefaultRedirect]; 
            }
            set { 
                base[_propDefaultRedirect] = value; 
            }
        } 

        [ConfigurationProperty("mode", DefaultValue = CustomErrorsMode.RemoteOnly)]
        public CustomErrorsMode Mode {
            get { 
                return (CustomErrorsMode)base[_propMode];
            } 
            set { 
                base[_propMode] = value;
            } 
        }

        [ConfigurationProperty("", IsDefaultCollection = true)]
        public CustomErrorCollection Errors { 
            get {
                return (CustomErrorCollection)base[_propErrors]; 
            } 
        }
 
        internal String DefaultAbsolutePath {
            get {
                if (_DefaultAbsolutePath == null) {
                    _DefaultAbsolutePath = GetAbsoluteRedirect(DefaultRedirect, basepath); 
                }
 
                return _DefaultAbsolutePath; 
            }
        } 

        internal String GetRedirectString(int code) {
            String r = null;
 
            if (Errors != null) {
                CustomError ce = Errors[(string)code.ToString(CultureInfo.InvariantCulture)]; 
                if (ce != null) 
                    r = GetAbsoluteRedirect(ce.Redirect, basepath);
            } 

            if (r == null) {
                r = DefaultAbsolutePath;
            } 

            return r; 
        } 

        protected override void Reset(ConfigurationElement parentElement) { 
            base.Reset(parentElement);
            CustomErrorsSection parent = parentElement as CustomErrorsSection;
            if (parent != null) {
                basepath = parent.basepath; 
            }
        } 
 
        protected override void DeserializeSection(XmlReader reader) {
            WebContext context; 

            base.DeserializeSection(reader);

            // Determine Web Context 
            context = EvaluationContext.HostingContext as WebContext;
 
            if (context != null) { 
                basepath = UrlPath.AppendSlashToPathIfNeeded(context.Path);
            } 
        }
        //
        // helper to create absolute redirect
        // 
        internal static String GetAbsoluteRedirect(String path, String basePath) {
            if (path != null && UrlPath.IsRelativeUrl(path)) { 
                if (String.IsNullOrEmpty(basePath)) 
                    basePath = "/";
 
                path = UrlPath.Combine(basePath, path);
            }

            return path; 
        }
 
        internal static CustomErrorsSection GetSettings(HttpContext context) { 
            return GetSettings(context, false);
        } 

        internal static CustomErrorsSection GetSettings(HttpContext context, bool canThrow) {
            CustomErrorsSection ce = null;
            RuntimeConfig runtimeConfig = null; 
            if (canThrow) {
                runtimeConfig = RuntimeConfig.GetConfig(context); 
                if (runtimeConfig != null) { 
                    ce = runtimeConfig.CustomErrors;
                } 
            }
            else {
                runtimeConfig = RuntimeConfig.GetLKGConfig(context);
                if (runtimeConfig != null) { 
                    ce = runtimeConfig.CustomErrors;
                } 
                if (ce == null) { 
                    if (_default == null) {
                        _default = new CustomErrorsSection(); 
                    }

                    ce = _default;
                } 
            }
 
            return ce; 
        }
 
        internal bool CustomErrorsEnabled(HttpRequest request) {
            // This could throw if the config file is malformed, but we don't want
            // to throw from here, as it would mess up error handling
            try { 
                // Always turn of custom errors in retail deployment mode (DevDiv 36396)
                if (DeploymentSection.RetailInternal) 
                    return true; 
            }
            catch { } 

            switch (Mode) {
                case CustomErrorsMode.Off:
                    return false; 

                case CustomErrorsMode.On: 
                    return true; 

                case CustomErrorsMode.RemoteOnly: 
                    return (!request.IsLocal);

                default:
                    return false; 
            }
        } 
    } 
}

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