Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Compilation / CompilationUtil.cs / 1305376 / CompilationUtil.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Code related to theconfig section * * Copyright (c) 1999 Microsoft Corporation */ namespace System.Web.Compilation { using System; using System.Web; using System.Configuration; using System.Web.UI; using System.Web.Configuration; using System.Web.Hosting; using System.Web.Util; using System.Globalization; using System.Collections; using System.Collections.Generic; using System.CodeDom.Compiler; using System.Security; using System.Security.Permissions; using System.Reflection; internal static class CompilationUtil { internal const string CodeDomProviderOptionPath = "system.codedom/compilers/compiler/ProviderOption/"; private const string CompilerDirectoryPath = "CompilerDirectoryPath"; internal static bool IsDebuggingEnabled(HttpContext context) { CompilationSection compConfig = MTConfigUtil.GetCompilationConfig(context); return compConfig.Debug; } internal static bool IsBatchingEnabled(string configPath) { CompilationSection config = MTConfigUtil.GetCompilationConfig(configPath); return config.Batch; } internal static int GetRecompilationsBeforeAppRestarts() { CompilationSection config = MTConfigUtil.GetCompilationAppConfig(); return config.NumRecompilesBeforeAppRestart; } internal static CompilerType GetCodeDefaultLanguageCompilerInfo() { return new CompilerType(typeof(Microsoft.VisualBasic.VBCodeProvider), null); } internal static CompilerType GetDefaultLanguageCompilerInfo(CompilationSection compConfig, VirtualPath configPath) { if (compConfig == null) { // Get the config object compConfig = MTConfigUtil.GetCompilationConfig(configPath); } // If no default language was specified in config, use VB if (compConfig.DefaultLanguage == null) { return GetCodeDefaultLanguageCompilerInfo(); } else { return compConfig.GetCompilerInfoFromLanguage(compConfig.DefaultLanguage); } } /* * Return a CompilerType that a file name's extension maps to. */ internal static CompilerType GetCompilerInfoFromVirtualPath(VirtualPath virtualPath) { // Get the extension of the source file to compile string extension = virtualPath.Extension; // Make sure there is an extension if (extension.Length == 0) { throw new HttpException( SR.GetString(SR.Empty_extension, virtualPath)); } return GetCompilerInfoFromExtension(virtualPath, extension); } /* * Return a CompilerType that a extension maps to. */ private static CompilerType GetCompilerInfoFromExtension(VirtualPath configPath, string extension) { // Get the config object CompilationSection config = MTConfigUtil.GetCompilationConfig(configPath); return config.GetCompilerInfoFromExtension(extension, true /*throwOnFail*/); } /* * Return a CompilerType that a language maps to. */ internal static CompilerType GetCompilerInfoFromLanguage(VirtualPath configPath, string language) { // Get the config object CompilationSection config = MTConfigUtil.GetCompilationConfig(configPath); return config.GetCompilerInfoFromLanguage(language); } internal static CompilerType GetCSharpCompilerInfo( CompilationSection compConfig, VirtualPath configPath) { if (compConfig == null) { // Get the config object compConfig = MTConfigUtil.GetCompilationConfig(configPath); } if (compConfig.DefaultLanguage == null) return new CompilerType(typeof(Microsoft.CSharp.CSharpCodeProvider), null); return compConfig.GetCompilerInfoFromLanguage("c#"); } internal static CodeSubDirectoriesCollection GetCodeSubDirectories() { // Get the config object CompilationSection config = MTConfigUtil.GetCompilationAppConfig(); CodeSubDirectoriesCollection codeSubDirectories = config.CodeSubDirectories; // Make sure the config data is valid if (codeSubDirectories != null) { codeSubDirectories.EnsureRuntimeValidation(); } return codeSubDirectories; } internal static long GetRecompilationHash(CompilationSection ps) { HashCodeCombiner recompilationHash = new HashCodeCombiner(); AssemblyCollection assemblies; BuildProviderCollection builders; FolderLevelBuildProviderCollection buildProviders; CodeSubDirectoriesCollection codeSubDirs; // Combine items from Compilation section recompilationHash.AddObject(ps.Debug); recompilationHash.AddObject(ps.TargetFramework); recompilationHash.AddObject(ps.Strict); recompilationHash.AddObject(ps.Explicit); recompilationHash.AddObject(ps.Batch); recompilationHash.AddObject(ps.OptimizeCompilations); recompilationHash.AddObject(ps.BatchTimeout); recompilationHash.AddObject(ps.MaxBatchGeneratedFileSize); recompilationHash.AddObject(ps.MaxBatchSize); recompilationHash.AddObject(ps.NumRecompilesBeforeAppRestart); recompilationHash.AddObject(ps.DefaultLanguage); recompilationHash.AddObject(ps.UrlLinePragmas); if (ps.AssemblyPostProcessorTypeInternal != null) { recompilationHash.AddObject(ps.AssemblyPostProcessorTypeInternal.FullName); } // Combine items from Compilers collection foreach (Compiler compiler in ps.Compilers) { recompilationHash.AddObject(compiler.Language); recompilationHash.AddObject(compiler.Extension); recompilationHash.AddObject(compiler.Type); recompilationHash.AddObject(compiler.WarningLevel); recompilationHash.AddObject(compiler.CompilerOptions); } // Combine items from section foreach (System.Web.Configuration.ExpressionBuilder eb in ps.ExpressionBuilders) { recompilationHash.AddObject(eb.ExpressionPrefix); recompilationHash.AddObject(eb.Type); } // Combine items from the Assembly collection assemblies = ps.Assemblies; if (assemblies.Count == 0) { recompilationHash.AddObject("__clearassemblies"); } else { foreach (AssemblyInfo ai in assemblies) { recompilationHash.AddObject(ai.Assembly); } } // Combine items from the Builders Collection builders = ps.BuildProviders; if (builders.Count == 0) { recompilationHash.AddObject("__clearbuildproviders"); } else { foreach (System.Web.Configuration.BuildProvider bp in builders) { recompilationHash.AddObject(bp.Type); recompilationHash.AddObject(bp.Extension); } } // Combine items from the FolderLevelBuildProviderCollection buildProviders = ps.FolderLevelBuildProviders; if (buildProviders.Count == 0) { recompilationHash.AddObject("__clearfolderlevelbuildproviders"); } else { foreach (System.Web.Configuration.FolderLevelBuildProvider bp in buildProviders) { recompilationHash.AddObject(bp.Type); recompilationHash.AddObject(bp.Name); } } codeSubDirs = ps.CodeSubDirectories; if (codeSubDirs.Count == 0) { recompilationHash.AddObject("__clearcodesubdirs"); } else { foreach (CodeSubDirectory csd in codeSubDirs) { recompilationHash.AddObject(csd.DirectoryName); } } // Make sure the section is hashed properly. CompilerInfo[] compilerInfoArray = CodeDomProvider.GetAllCompilerInfo(); if (compilerInfoArray != null) { foreach (CompilerInfo info in compilerInfoArray) { // Ignore it if the type is not valid. if (!info.IsCodeDomProviderTypeValid) { continue; } CompilerParameters parameters = info.CreateDefaultCompilerParameters(); string option = parameters.CompilerOptions; if (!String.IsNullOrEmpty(option)) { Type type = info.CodeDomProviderType; if (type != null) { recompilationHash.AddObject(type.FullName); } // compilerOptions need to be hashed. recompilationHash.AddObject(option); } // DevDiv 62998 // The tag providerOption needs to be added to the hash, // as the user could switch between v2 and v3.5. if (info.CodeDomProviderType == null) continue; // Add a hash for each providerOption added, specific for each codeDomProvider, so that // if some codedom setting has changed, we know we have to recompile. IDictionary providerOptions = GetProviderOptions(info); if (providerOptions != null && providerOptions.Count > 0) { string codeDomProviderType = info.CodeDomProviderType.FullName; foreach (string key in providerOptions.Keys) { string value = providerOptions[key]; recompilationHash.AddObject(codeDomProviderType + ":" + key + "=" + value); } } } } return recompilationHash.CombinedHash; } /* * Return a file provider Type that an extension maps to. */ internal static Type GetBuildProviderTypeFromExtension(VirtualPath configPath, string extension, BuildProviderAppliesTo neededFor, bool failIfUnknown) { // Get the config object CompilationSection config = MTConfigUtil.GetCompilationConfig(configPath); return GetBuildProviderTypeFromExtension(config, extension, neededFor, failIfUnknown); } internal static Type GetBuildProviderTypeFromExtension(CompilationSection config, string extension, BuildProviderAppliesTo neededFor, bool failIfUnknown) { BuildProviderInfo providerInfo = BuildProvider.GetBuildProviderInfo(config, extension); Type buildProviderType = null; // Never return an IgnoreFileBuildProvider/ForceCopyBuildProvider, since it's just a marker if (providerInfo != null && providerInfo.Type != typeof(IgnoreFileBuildProvider) && providerInfo.Type != typeof(ForceCopyBuildProvider)) { buildProviderType = providerInfo.Type; } // In updatable precomp mode, only aspx/ascx/master web files need processing. Ignore the rest. if (neededFor == BuildProviderAppliesTo.Web && BuildManager.PrecompilingForUpdatableDeployment && !typeof(BaseTemplateBuildProvider).IsAssignableFrom(buildProviderType)) { buildProviderType = null; } if (buildProviderType != null) { // Only return it if it applies to what it's needed for if ((neededFor & providerInfo.AppliesTo) != 0) return buildProviderType; } // If the extension is registered as a compiler extension, use // a SourceFileBuildProvider to handle it (not supported in Resources directory) else if (neededFor != BuildProviderAppliesTo.Resources && config.GetCompilerInfoFromExtension(extension, false /*throwOnFail*/) != null) { return typeof(SourceFileBuildProvider); } if (failIfUnknown) { throw new HttpException( SR.GetString( SR.Unknown_buildprovider_extension, extension, neededFor.ToString())); } return null; } // Returns the list of buildProvider types associated to the specified appliesTo internal static List GetFolderLevelBuildProviderTypes(CompilationSection config, FolderLevelBuildProviderAppliesTo appliesTo) { FolderLevelBuildProviderCollection buildProviders = config.FolderLevelBuildProviders; return buildProviders.GetBuildProviderTypes(appliesTo); } // In partial trust, do not allow the CompilerDirectoryPath provider option in codedom settings (Dev10 bug 462348) internal static void CheckCompilerDirectoryPathAllowed(IDictionary providerOptions) { if (providerOptions == null) { return; } if (!providerOptions.ContainsKey(CompilerDirectoryPath)) { return; } if (!HttpRuntime.HasUnmanagedPermission()) { string errorString = SR.GetString(SR.Insufficient_trust_for_attribute, CompilerDirectoryPath); throw new HttpException(errorString); } } internal static void CheckCompilerOptionsAllowed(string compilerOptions, bool config, string file, int line) { // If it's empty, we never block it if (String.IsNullOrEmpty(compilerOptions)) return; // Only allow the use of compilerOptions when we have UnmanagedCode access (ASURT 73678) if (!HttpRuntime.HasUnmanagedPermission()) { string errorString = SR.GetString(SR.Insufficient_trust_for_attribute, "compilerOptions"); if (config) throw new ConfigurationErrorsException(errorString, file, line); else throw new HttpException(errorString); } } // This is used to determine what files need to be copied, and what stub files // need to be created during deployment precompilation. // Note: createStub only applies if the method returns false. internal static bool NeedToCopyFile(VirtualPath virtualPath, bool updatable, out bool createStub) { createStub = false; // Get the config object CompilationSection config = MTConfigUtil.GetCompilationConfig(virtualPath); string extension = virtualPath.Extension; BuildProviderInfo providerInfo = BuildProvider.GetBuildProviderInfo(config, extension); if (providerInfo != null) { // We only care about 'web' providers. Everything else we treat as static if ((BuildProviderAppliesTo.Web & providerInfo.AppliesTo) == 0) return true; // If the provider is a ForceCopyBuildProvider, treat as static if (providerInfo.Type == typeof(ForceCopyBuildProvider)) return true; // During updatable precomp, everything needs to be copied over. However, // aspx files that use code beside will later be overwritten by modified // versions (see TemplateParser.CreateModifiedMainDirectiveFileIfNeeded) if (providerInfo.Type != typeof(IgnoreFileBuildProvider) && BuildManager.PrecompilingForUpdatableDeployment) { return true; } // There is a real provider, so don't copy the file. We also need to determine whether // a stub file needs to be created. createStub = true; // Skip the stub file for some non-requestable types if (providerInfo.Type == typeof(UserControlBuildProvider) || providerInfo.Type == typeof(MasterPageBuildProvider) || providerInfo.Type == typeof(IgnoreFileBuildProvider)) { createStub = false; } return false; } // If the extension is registered as a compiler extension, don't copy if (config.GetCompilerInfoFromExtension(extension, false /*throwOnFail*/) != null) { return false; } // Skip the copying for asax and skin files, which are not static even though they // don't have a registered BuildProvider (but don't skip .skin files during // updatable precomp). // if (StringUtil.EqualsIgnoreCase(extension, ".asax")) return false; if (!updatable && StringUtil.EqualsIgnoreCase(extension, ThemeDirectoryCompiler.skinExtension)) return false; // // If there is no BuildProvider registered, it's a static file, and should be copied // return true; } internal static Type LoadTypeWithChecks(string typeName, Type requiredBaseType, Type requiredBaseType2, ConfigurationElement elem, string propertyName) { Type t = ConfigUtil.GetType(typeName, propertyName, elem); if (requiredBaseType2 == null) { ConfigUtil.CheckAssignableType(requiredBaseType, t, elem, propertyName); } else { ConfigUtil.CheckAssignableType(requiredBaseType, requiredBaseType2, t, elem, propertyName); } return t; } // Devdiv Bug 57600 // We need to use the constructor with ProviderOptions to get the v3.5/v4.0 compiler that was possibly set in config. // We first check if there is any providerOptions and invoke the constructor if so. // Otherwise, we fall back to the default constructor. internal static CodeDomProvider CreateCodeDomProvider(Type codeDomProviderType) { CodeDomProvider codeDomProvider = CreateCodeDomProviderWithPropertyOptions(codeDomProviderType); if (codeDomProvider != null) { return codeDomProvider; } return (CodeDomProvider)Activator.CreateInstance(codeDomProviderType); } internal static CodeDomProvider CreateCodeDomProviderNonPublic(Type codeDomProviderType) { CodeDomProvider codeDomProvider = CreateCodeDomProviderWithPropertyOptions(codeDomProviderType); if (codeDomProvider != null) { return codeDomProvider; } return (CodeDomProvider)HttpRuntime.CreateNonPublicInstance(codeDomProviderType); } [ReflectionPermission(SecurityAction.Assert, Unrestricted = true)] private static CodeDomProvider CreateCodeDomProviderWithPropertyOptions(Type codeDomProviderType) { // The following resembles the code in System.CodeDom.CompilerInfo.CreateProvider // Make a copy to avoid modifying the original. var originalProviderOptions = GetProviderOptions(codeDomProviderType); IDictionary providerOptions = null; if (originalProviderOptions != null) { providerOptions = new Dictionary (originalProviderOptions); } // Block CompilerDirectoryPath if we are in partial trust CheckCompilerDirectoryPathAllowed(providerOptions); // Check whether the user supplied the compilerDirectoryPath or was it added by us bool addedCompilerDirectoryPath = false; if (MultiTargetingUtil.IsTargetFramework20) { // If the target framework is v2.0, there won't be any codedom settings, so we need // to explicitly set the compiler to be the v2.0 compiler using compilerVersion=v2.0. if (providerOptions == null) { providerOptions = new Dictionary (); } providerOptions["CompilerVersion"] = "v2.0"; } else if (MultiTargetingUtil.IsTargetFramework35) { // We need to explicitly set to v3.5, as it is possible for the // user to only have specified it for one compiler but not // the other. // Dev10 bug 809212 providerOptions["CompilerVersion"] = "v3.5"; } else { // If we are targeting 4.0 but the compiler version is less than 4.0, set it to 4.0. // This can happen if a user tries to run a 2.0/3.5 web site in a 4.0 application pool without // upgrading it, and the codedom section still has 3.5 as the compilerVersion, // so we have to set the compilerVersion to 4.0 explicitly. string version = GetCompilerVersion(codeDomProviderType); Version v = GetVersionFromVString(version); if (v != null && v < MultiTargetingUtil.Version40) { providerOptions["CompilerVersion"] = "v4.0"; } } if (providerOptions != null && providerOptions.Count > 0) { Debug.Assert(codeDomProviderType != null, "codeDomProviderType should not be null"); // Check whether the codedom provider supports a constructor that takes in providerOptions. // Currently only VB and C# support providerOptions for sure, while others such as JScript might not. ConstructorInfo ci = codeDomProviderType.GetConstructor(new Type[] { typeof(IDictionary ) }); CodeDomProvider provider = null; if (ci != null) { // First, obtain the language for the given codedom provider type. CodeDomProvider defaultProvider = (CodeDomProvider)Activator.CreateInstance(codeDomProviderType); string extension = defaultProvider.FileExtension; // Then, use the new createProvider API to create an instance. provider = CodeDomProvider.CreateProvider(extension, providerOptions); } // Restore the provider options if we previously manually added the compilerDirectoryPath. // Otherwise, we might incorrectly invalidate the compilerDirectoryPath in medium trust (Dev10 bug 550299). if (addedCompilerDirectoryPath) { providerOptions.Remove(CompilerDirectoryPath); } return provider; } return null; } [ReflectionPermission(SecurityAction.Assert, Unrestricted = true)] internal static IDictionary GetProviderOptions(Type codeDomProviderType) { // Using reflection to get the property for the time being. // This could simply return CompilerInfo.PropertyOptions if it goes public in future. CodeDomProvider provider = (CodeDomProvider)Activator.CreateInstance(codeDomProviderType); string extension = provider.FileExtension; if (CodeDomProvider.IsDefinedExtension(extension)) { CompilerInfo ci = CodeDomProvider.GetCompilerInfo(CodeDomProvider.GetLanguageFromExtension(extension)); return GetProviderOptions(ci); } return null; } [ReflectionPermission(SecurityAction.Assert, Unrestricted = true)] private static IDictionary GetProviderOptions(CompilerInfo ci) { Debug.Assert(ci != null, "CompilerInfo ci should not be null"); PropertyInfo pi = ci.GetType().GetProperty("ProviderOptions", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance); if (pi != null) return (IDictionary )pi.GetValue(ci, null); return null; } /// /// Returns the compilerVersion providerOption specified for the codedom provider type. /// Returns null if the providerOption is not found. /// internal static string GetCompilerVersion(Type codeDomProviderType) { return GetProviderOption(codeDomProviderType, "CompilerVersion"); } ////// Returns the value of the providerOption specified for the codedom provider type. /// Returns null if the providerOption is not found. /// internal static string GetProviderOption(Type codeDomProviderType, string providerOption) { IDictionaryproviderOptions = CompilationUtil.GetProviderOptions(codeDomProviderType); if (providerOptions != null) { string version; if (providerOptions.TryGetValue(providerOption, out version)) { return version; } } return null; } /// /// Returns true if the string matches "v3.5" exactly. /// internal static bool IsCompilerVersion35(string compilerVersion) { if (compilerVersion == "v3.5") { return true; } return false; } ////// This returns true only if the codedom CompilverVersion provider option is exactly v3.5. /// internal static bool IsCompilerVersion35(Type codeDomProviderType) { string compilerVersion = GetCompilerVersion(codeDomProviderType); bool result = IsCompilerVersion35(compilerVersion); return result; } ////// Returns true if the codedom CompilerVersion provider option is at least v3.5. /// /// ///internal static bool IsCompilerVersion35OrAbove(Type codeDomProviderType) { string compilerVersion = GetCompilerVersion(codeDomProviderType); if (IsCompilerVersion35(compilerVersion)) { return true; } // The compilerVersion provider option is known to exist only for v3.5. // If it does not exist, then we need to rely on the target framework version to // determine whether we need to use the 2.0 or 4.0 compiler. if (MultiTargetingUtil.IsTargetFramework20) { return false; } // If it isn't 2.0 or 3.5, assume it is 4.0 and above. return true; } /// /// Returns true if the codedom provider has warnAsError set to true /// internal static bool WarnAsError(Type codeDomProviderType) { string value = GetProviderOption(codeDomProviderType, "WarnAsError"); bool result; if (value != null && bool.TryParse(value, out result)) { return result; } // Assume false if the value wasn't set return false; } // Returns the version when given string of form "v4.0" internal static Version GetVersionFromVString(string version) { if (string.IsNullOrEmpty(version)) { return null; } Debug.Assert(version.Length > 1, "Version has invalid length"); return new Version(version.Substring(1)); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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