Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Configuration/ProcessHostServerConfig.cs

@@ -0,0 +1,229 @@
+//------------------------------------------------------------------------------
+// <copyright file="ProcessHostMapPath.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+
+namespace System.Web.Configuration {
+    using System;
+    using System.Collections;
+    using System.Configuration;
+    using System.Diagnostics.CodeAnalysis;
+    using System.Globalization;
+    using System.IO;
+    using System.Runtime.InteropServices;
+    using System.Text;
+    using System.Web.Caching;
+    using System.Web.Hosting;
+    using System.Web.UI;
+    using System.Web.Util;
+    using System.Xml;
+
+    
+    //
+    // Uses IIS 7 native config
+    //
+    internal sealed class ProcessHostServerConfig : IServerConfig, IServerConfig2 {
+        static object                     s_initLock = new Object();
+        static ProcessHostServerConfig    s_instance;
+
+        string _siteNameForCurrentApplication;
+
+        static internal IServerConfig GetInstance() {
+            if (s_instance == null) {
+                lock (s_initLock) {
+                    if (s_instance == null) {
+                        s_instance = new ProcessHostServerConfig();
+                    }
+                }
+            }
+            return s_instance;
+        }
+
+        static ProcessHostServerConfig() {
+            HttpRuntime.ForceStaticInit();
+        }
+
+        [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands", Justification = "Private constructor used to make a singleton instance.")]
+        ProcessHostServerConfig() {
+            if (null == HostingEnvironment.SupportFunctions) {
+                ProcessHostConfigUtils.InitStandaloneConfig();
+            }
+            else {
+                IProcessHostSupportFunctions fns = HostingEnvironment.SupportFunctions;
+                if (null != fns ) {
+                    IntPtr configSystem = fns.GetNativeConfigurationSystem();
+                    Debug.Assert(IntPtr.Zero != configSystem, "null != configSystem");
+
+                    if (IntPtr.Zero != configSystem) {
+                        // won't fail if valid pointer
+                        // no cleanup needed, we don't own instance
+                        UnsafeIISMethods.MgdSetNativeConfiguration(configSystem);
+                    }
+                }
+            }
+            _siteNameForCurrentApplication = HostingEnvironment.SiteNameNoDemand;
+            if (_siteNameForCurrentApplication == null) {
+                _siteNameForCurrentApplication = ProcessHostConfigUtils.GetSiteNameFromId(ProcessHostConfigUtils.DEFAULT_SITE_ID_UINT);
+            }
+        }
+        
+        string IServerConfig.GetSiteNameFromSiteID(string siteID) {
+            uint siteIDValue;
+
+            if (!UInt32.TryParse(siteID, out siteIDValue)) {
+                Debug.Assert(false, "siteID is not numeric");
+                return String.Empty;
+            }
+
+            return ProcessHostConfigUtils.GetSiteNameFromId(siteIDValue);
+        }
+
+        // if appHost is null, we use the site name for the current application
+        string IServerConfig.MapPath(IApplicationHost appHost, VirtualPath path) {
+            string siteName = (appHost == null) ? _siteNameForCurrentApplication : appHost.GetSiteName();
+            string physicalPath = ProcessHostConfigUtils.MapPathActual(siteName, path);
+            if (FileUtil.IsSuspiciousPhysicalPath(physicalPath)) {
+                throw new InvalidOperationException(SR.GetString(SR.Cannot_map_path, path.VirtualPathString));
+            }
+            return physicalPath;
+        }
+
+        string[] IServerConfig.GetVirtualSubdirs(VirtualPath path, bool inApp) {
+            // WOS 1956227: PERF: inactive applications on the web server degrade Working Set by 10%
+            // It is very expensive to get a list of subdirs not in the application if there are a lot of applications,
+            // so instead, use ProcessHostServerConfig.IsWithinApp to check if a particular path is in the app.
+            if (inApp == false) {
+                throw new NotSupportedException();
+            }
+            
+            string vpath = path.VirtualPathString;
+            string [] dirList = null;
+            int dirListCount = 0;
+            
+            IntPtr pAppCollection = IntPtr.Zero;
+            IntPtr pBstr = IntPtr.Zero;
+            int cBstr = 0;
+            try {
+                int count = 0;
+                int result = UnsafeIISMethods.MgdGetAppCollection(IntPtr.Zero, _siteNameForCurrentApplication, vpath, out pBstr, out cBstr, out pAppCollection, out count);
+                if (result < 0 || pBstr == IntPtr.Zero) {
+                    throw new InvalidOperationException(SR.GetString(SR.Cant_Enumerate_NativeDirs, result));
+                }
+                string appRoot = StringUtil.StringFromWCharPtr(pBstr, cBstr);
+                Marshal.FreeBSTR(pBstr);
+                pBstr = IntPtr.Zero;
+                cBstr = 0;
+                dirList = new string[count];
+
+                int lenNoTrailingSlash = vpath.Length;
+                if (vpath[lenNoTrailingSlash - 1] == '/') {
+                    lenNoTrailingSlash--;
+                }
+                int lenAppRoot = appRoot.Length;
+                string appRootRelativePath = (lenNoTrailingSlash > lenAppRoot) ? vpath.Substring(lenAppRoot, lenNoTrailingSlash - lenAppRoot) : String.Empty;
+
+                for (uint index = 0; index < count; index++) {
+                    result = UnsafeIISMethods.MgdGetNextVPath(pAppCollection, index, out pBstr, out cBstr);
+                    if (result < 0 || pBstr == IntPtr.Zero) {
+                        throw new InvalidOperationException(SR.GetString(SR.Cant_Enumerate_NativeDirs, result));
+                    }
+                    // if cBstr = 1, then pBstr = "/" and can be ignored
+                    string subVdir = (cBstr > 1) ? StringUtil.StringFromWCharPtr(pBstr, cBstr) : null;
+                    Marshal.FreeBSTR(pBstr);
+                    pBstr = IntPtr.Zero;
+                    cBstr = 0;
+
+                    // only put the subVdir in our list if it is a subdirectory of the specified vpath
+                    if (subVdir != null && subVdir.Length > appRootRelativePath.Length) {
+                        if (appRootRelativePath.Length == 0) {
+                            if (subVdir.IndexOf('/', 1) == -1) {
+                                dirList[dirListCount++] = subVdir.Substring(1);
+                            }
+                        }
+                        else if (StringUtil.EqualsIgnoreCase(appRootRelativePath, 0, subVdir, 0, appRootRelativePath.Length)) {
+                            int nextSlashIndex = subVdir.IndexOf('/', 1 + appRootRelativePath.Length);
+                            if (nextSlashIndex > -1) {
+                                dirList[dirListCount++] = subVdir.Substring(appRootRelativePath.Length + 1, nextSlashIndex - appRootRelativePath.Length);
+                            }
+                            else {
+                                dirList[dirListCount++] = subVdir.Substring(appRootRelativePath.Length + 1);
+                            }
+                        }
+                    }
+                }
+            }
+            finally {
+                if (pAppCollection != IntPtr.Zero) {
+                    Marshal.Release(pAppCollection);
+                    pAppCollection = IntPtr.Zero;
+                }
+                if (pBstr != IntPtr.Zero) {
+                    Marshal.FreeBSTR(pBstr);
+                    pBstr = IntPtr.Zero;
+                }
+            }
+
+            string[] subdirs = null;
+            if (dirListCount > 0) {
+                subdirs = new string[dirListCount];
+                for (int i = 0; i < subdirs.Length; i++) {
+                    subdirs[i] = dirList[i];
+                }
+            }
+            return subdirs;
+        }
+
+        bool IServerConfig2.IsWithinApp(string virtualPath) {
+            return UnsafeIISMethods.MgdIsWithinApp(IntPtr.Zero, _siteNameForCurrentApplication, HttpRuntime.AppDomainAppVirtualPathString, virtualPath);
+        }
+
+        bool IServerConfig.GetUncUser(IApplicationHost appHost, VirtualPath path, out string username, out string password) {
+            bool foundCreds = false;
+            username = null;
+            password = null;
+
+            IntPtr pBstrUserName = IntPtr.Zero;
+            int cBstrUserName = 0;
+            IntPtr pBstrPassword = IntPtr.Zero;
+            int cBstrPassword = 0;
+
+            try {
+                int result = UnsafeIISMethods.MgdGetVrPathCreds( IntPtr.Zero,
+                                                                 appHost.GetSiteName(),
+                                                                 path.VirtualPathString,
+                                                                 out pBstrUserName,
+                                                                 out cBstrUserName,
+                                                                 out pBstrPassword,
+                                                                 out cBstrPassword);
+                if (result == 0) {
+                    username = (cBstrUserName > 0) ? StringUtil.StringFromWCharPtr(pBstrUserName, cBstrUserName) : null;
+                    password = (cBstrPassword > 0) ? StringUtil.StringFromWCharPtr(pBstrPassword, cBstrPassword) : null;
+                    foundCreds = (!String.IsNullOrEmpty(username) && !String.IsNullOrEmpty(password));
+                }
+            }
+            finally {
+                if (pBstrUserName != IntPtr.Zero) {
+                    Marshal.FreeBSTR(pBstrUserName);
+                }
+                if (pBstrPassword != IntPtr.Zero) {
+                    Marshal.FreeBSTR(pBstrPassword);
+                }
+            }
+
+            return foundCreds;
+        }
+
+        long IServerConfig.GetW3WPMemoryLimitInKB() {
+            long limit = 0;
+
+            int result = UnsafeIISMethods.MgdGetMemoryLimitKB( out limit );
+            if (result < 0)
+                return 0;
+
+            return limit;
+        }        
+    }
+}
+