Imported Upstream version 4.2.0.179

Former-commit-id: 0a113cb3a6feb7873f632839b1307cc6033cd595

external/referencesource/SMDiagnostics/System/ServiceModel/Diagnostics/LegacyDiagnosticTrace.cs

@@ -66,10 +66,12 @@ namespace System.ServiceModel.Diagnostics
                 this.CreateTraceSource();
                 this.AddDomainEventHandlersForCleanup();
             }
+#if !NO_CONFIGURATION
             catch (ConfigurationErrorsException)
             {
                 throw;
             }
+#endif
             catch (Exception e)
             {
                 if (Fx.IsFatal(e))

external/referencesource/SMDiagnostics/System/ServiceModel/Diagnostics/MachineSettingsSection.cs

@@ -2,6 +2,7 @@
 // Copyright (c) Microsoft Corporation.  All rights reserved.
 //------------------------------------------------------------------------------
 
+#if !NO_CONFIGURATION
 namespace System.ServiceModel.Configuration
 {
     using System.Configuration;
@@ -51,5 +52,7 @@ namespace System.ServiceModel.Configuration
         }
     }
 }
+#endif
+
 
 

external/referencesource/SMDiagnostics/System/ServiceModel/Diagnostics/PiiTraceSource.cs

@@ -4,11 +4,15 @@
 
 namespace System.ServiceModel.Diagnostics
 {
+#if !NO_CONFIGURATION
     using System.Configuration;
+#endif
     using System.Diagnostics;
     using System.Runtime;
     using System.Runtime.Diagnostics;
+#if !NO_CONFIGURATION
     using System.ServiceModel.Configuration;
+#endif
 
     class PiiTraceSource : TraceSource
     {
@@ -59,7 +63,11 @@ namespace System.ServiceModel.Diagnostics
 #pragma warning disable 618
                             System.Runtime.Diagnostics.EventLogger logger = new System.Runtime.Diagnostics.EventLogger(this.eventSourceName, null);
 #pragma warning restore 618
+#if !NO_CONFIGURATION
                             if (MachineSettingsSection.EnableLoggingKnownPii)
+#else
+                            if (false)
+#endif
                             {
                                 logger.LogEvent(TraceEventType.Information,
                                     (ushort)System.Runtime.Diagnostics.EventLogCategory.MessageLogging,

external/referencesource/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations.txt

@@ -13,4 +13,8 @@ MinLengthAttribute_ValidationError=The field {0} must be a string or array type
 MinLengthAttribute_InvalidMinLength=MinLengthAttribute must have a Length value that is zero or greater.
 
 ## ExceptionType=ArgumentException
-ArgumentIsNullOrWhitespace=The argument '{0}' cannot be null, empty or contain only white space.
+ArgumentIsNullOrWhitespace=The argument '{0}' cannot be null, empty or contain only white space.
+
+RequiredAttribute_ValidationError=The {0} field is required.
+
+CompareAttribute_MustMatch='{0}' and '{1}' do not match.

external/referencesource/System.Configuration/GlobalSuppressions.cs

@@ -0,0 +1,3 @@
+using System.Diagnostics.CodeAnalysis;
+
+[module: SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Configuration.SR.GetString(System.String,System.Boolean&):System.String")]

external/referencesource/System.Configuration/Microsoft/Win32/SafeCryptContextHandle.cs

@@ -0,0 +1,36 @@
+//------------------------------------------------------------------------------
+// <copyright file="UnsafeNativeMethods.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace Microsoft.Win32 {
+    using System;
+    using System.Security.Permissions;
+    using Microsoft.Win32.SafeHandles;
+    using System.Configuration;
+
+    // Safehandle for crypt context handles
+    [System.Security.SuppressUnmanagedCodeSecurityAttribute()]
+    internal sealed class SafeCryptContextHandle : SafeHandleZeroOrMinusOneIsInvalid {
+        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
+        internal SafeCryptContextHandle()
+            : base(true) {
+        }
+
+        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
+        internal SafeCryptContextHandle(IntPtr handle, bool ownsHandle)
+            : base(ownsHandle) {
+            SetHandle(handle);
+        }
+
+        override protected bool ReleaseHandle() {
+            if (handle != IntPtr.Zero) {
+                UnsafeNativeMethods.CryptReleaseContext(this, 0);
+                return true;
+            }
+            return false;
+        }
+    }
+}
+

external/referencesource/System.Configuration/Microsoft/Win32/SafeNativeMemoryHandle.cs

@@ -0,0 +1,53 @@
+//------------------------------------------------------------------------------
+// <copyright file="UnsafeNativeMethods.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace Microsoft.Win32 {
+    using System.Runtime.InteropServices;
+    using System;
+    using System.Security.Permissions;
+    using Microsoft.Win32.SafeHandles;
+    using System.Configuration;
+
+    // Safehandle for memory handles
+    [System.Security.SuppressUnmanagedCodeSecurityAttribute()]
+    internal sealed class SafeNativeMemoryHandle : SafeHandleZeroOrMinusOneIsInvalid {
+        private bool _useLocalFree = false;
+        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
+        internal SafeNativeMemoryHandle()
+            : this(false) {
+        }
+
+        internal SafeNativeMemoryHandle(bool useLocalFree)
+            : base(true) {
+            _useLocalFree = useLocalFree;
+        }
+
+        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
+        internal SafeNativeMemoryHandle(IntPtr handle, bool ownsHandle)
+            : base(ownsHandle) {
+            SetHandle(handle);
+        }
+
+        internal void SetDataHandle(IntPtr handle) {
+            SetHandle(handle);
+        }
+
+        override protected bool ReleaseHandle() {
+            if (handle != IntPtr.Zero) {
+                if (_useLocalFree == true)
+                    UnsafeNativeMethods.LocalFree(handle);
+                else
+                    Marshal.FreeHGlobal(handle);
+                handle = IntPtr.Zero;
+                return true;
+            }
+            return false;
+        }
+    }
+
+
+}
+

external/referencesource/System.Configuration/Microsoft/Win32/SafeNativeMethods.cs

@@ -0,0 +1,29 @@
+//------------------------------------------------------------------------------
+// <copyright file="SafeNativeMethods.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace Microsoft.Win32 {
+    using System.Runtime.InteropServices;
+    using System;
+    using System.Security.Permissions;
+    using System.Collections;
+    using System.IO;
+    using System.Text;
+    using System.Threading;
+    using Microsoft.Win32.SafeHandles;    
+
+    [ 
+    System.Security.SuppressUnmanagedCodeSecurityAttribute()
+    ]
+    internal static class SafeNativeMethods {
+#if NOPERF
+        [DllImport(ExternDll.Kernel32, SetLastError=true)]
+        internal static extern bool QueryPerformanceCounter(out long value);
+        
+        [DllImport(ExternDll.Kernel32, SetLastError=true)]
+        internal static extern bool QueryPerformanceFrequency(out long value);
+#endif
+    }
+}

external/referencesource/System.Configuration/Microsoft/Win32/UnsafeNativeMethods.cs

@@ -0,0 +1,66 @@
+//------------------------------------------------------------------------------
+// <copyright file="UnsafeNativeMethods.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace Microsoft.Win32 {
+    using System.Runtime.InteropServices;
+    using System.Threading;
+    using System;
+    using System.Security.Permissions;
+    using System.Collections;
+    using System.IO;
+    using System.Text;
+    using Microsoft.Win32.SafeHandles;
+    using System.Configuration;
+
+    [
+    System.Security.SuppressUnmanagedCodeSecurityAttribute()
+    ]
+    internal static class UnsafeNativeMethods {
+        [DllImport(ExternDll.Kernel32, SetLastError=true, CharSet=CharSet.Auto, BestFitMapping=false)]
+        internal static extern bool GetFileAttributesEx(string name, int fileInfoLevel, out WIN32_FILE_ATTRIBUTE_DATA data);
+
+        internal const int GetFileExInfoStandard = 0;
+
+        [StructLayout(LayoutKind.Sequential)]
+        internal struct WIN32_FILE_ATTRIBUTE_DATA {
+            internal int fileAttributes;
+            internal uint ftCreationTimeLow;
+            internal uint ftCreationTimeHigh;
+            internal uint ftLastAccessTimeLow;
+            internal uint ftLastAccessTimeHigh;
+            internal uint ftLastWriteTimeLow;
+            internal uint ftLastWriteTimeHigh;
+            internal uint fileSizeHigh;
+            internal uint fileSizeLow;
+        }
+
+        [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto, BestFitMapping=false)]
+        internal static extern int GetModuleFileName(HandleRef hModule, StringBuilder buffer, int length);
+
+#if !FEATURE_PAL
+        [DllImport(ExternDll.Crypt32, SetLastError=true, CharSet=CharSet.Unicode)]
+        internal extern static bool CryptProtectData(ref DATA_BLOB inputData, string description, ref DATA_BLOB entropy, IntPtr pReserved, ref CRYPTPROTECT_PROMPTSTRUCT promptStruct, UInt32 flags, ref DATA_BLOB outputData);
+
+        [DllImport(ExternDll.Crypt32, SetLastError= true, CharSet=CharSet.Unicode)]
+        internal extern static bool CryptUnprotectData(ref DATA_BLOB inputData, IntPtr description, ref DATA_BLOB entropy, IntPtr pReserved, ref CRYPTPROTECT_PROMPTSTRUCT promptStruct, UInt32 flags, ref DATA_BLOB outputData);
+
+        [DllImport(ExternDll.Advapi32, SetLastError=true, CharSet=CharSet.Unicode)]
+        internal extern static int CryptAcquireContext(out SafeCryptContextHandle phProv, string pszContainer, string pszProvider, uint dwProvType, uint dwFlags);
+
+        [DllImport(ExternDll.Advapi32, SetLastError=true, CharSet=CharSet.Unicode)]
+        internal extern static int CryptReleaseContext(SafeCryptContextHandle hProv, uint dwFlags);
+
+        [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto)]
+        internal extern static IntPtr LocalFree(IntPtr buf);
+#endif
+
+        // MoveFile Parameter
+        internal const int MOVEFILE_REPLACE_EXISTING = 0x00000001;
+
+        [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto, BestFitMapping=false)]
+        internal static extern bool   MoveFileEx(string lpExistingFileName, string lpNewFileName, int dwFlags);
+    }
+}

external/referencesource/System.Configuration/System/Configuration/AppSettingsSection.cs

@@ -0,0 +1,162 @@
+//------------------------------------------------------------------------------
+// <copyright file="AppSettingsSection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using System;
+    using System.Xml;
+    using System.Configuration;
+    using System.Collections.Specialized;
+    using System.Collections;
+    using System.IO;
+    using System.Text;
+
+    public sealed class AppSettingsSection : ConfigurationSection {
+        private volatile static ConfigurationPropertyCollection  s_properties;
+        private volatile static ConfigurationProperty            s_propAppSettings;
+        private volatile static ConfigurationProperty            s_propFile;
+
+        private KeyValueInternalCollection _KeyValueCollection = null;
+
+        private static ConfigurationPropertyCollection EnsureStaticPropertyBag() {
+            if (s_properties == null) {
+                ConfigurationProperty propAppSettings = new ConfigurationProperty(null, typeof(KeyValueConfigurationCollection), null, ConfigurationPropertyOptions.IsDefaultCollection);
+                ConfigurationProperty propFile = new ConfigurationProperty("file", typeof(string), String.Empty, ConfigurationPropertyOptions.None);
+
+                ConfigurationPropertyCollection properties = new ConfigurationPropertyCollection();
+                properties.Add(propAppSettings);
+                properties.Add(propFile);
+
+                s_propAppSettings = propAppSettings;
+                s_propFile = propFile;
+                s_properties = properties;
+            }
+
+            return s_properties;
+        }
+
+        public AppSettingsSection() {
+            EnsureStaticPropertyBag();
+        }
+
+        protected internal override ConfigurationPropertyCollection Properties {
+            get {
+                return EnsureStaticPropertyBag();
+            }
+        }
+
+        protected internal override object GetRuntimeObject() {
+            SetReadOnly();
+            return this.InternalSettings;            // return the read only object
+        }
+
+        internal NameValueCollection InternalSettings {
+            get {
+                if (_KeyValueCollection == null) {
+                    _KeyValueCollection = new KeyValueInternalCollection(this);
+                }
+                return (NameValueCollection)_KeyValueCollection;
+            }
+        }
+
+        [ConfigurationProperty("", IsDefaultCollection = true)]
+        public KeyValueConfigurationCollection Settings {
+            get {
+                return (KeyValueConfigurationCollection)base[s_propAppSettings];
+            }
+        }
+
+        [ConfigurationProperty("file", DefaultValue = "")]
+        public string File {
+            get {
+                string fileValue = (string)base[s_propFile];
+                if (fileValue == null) {
+                    return String.Empty;
+                }
+                return fileValue;
+            }
+            set {
+                base[s_propFile] = value;
+            }
+        }
+        protected internal override void Reset(ConfigurationElement parentSection) {
+            _KeyValueCollection = null;
+            base.Reset(parentSection);
+            if (!String.IsNullOrEmpty((string)base[s_propFile])) { // don't inherit from the parent
+                SetPropertyValue(s_propFile,null,true); // ignore the lock to prevent inheritence
+            }
+        }
+
+
+        protected internal override bool IsModified() {
+            return base.IsModified();
+        }
+
+        protected internal override string SerializeSection(ConfigurationElement parentElement, string name, ConfigurationSaveMode saveMode) {
+            return base.SerializeSection(parentElement, name, saveMode);
+        }
+
+        protected internal override void DeserializeElement(XmlReader reader, bool serializeCollectionKey) {
+            string ElementName = reader.Name;
+
+            base.DeserializeElement(reader, serializeCollectionKey);
+            if ((File != null) && (File.Length > 0)) {
+                string sourceFileFullPath;
+                string configFileDirectory;
+                string configFile;
+
+                // Determine file location
+                configFile = ElementInformation.Source;
+
+                if (String.IsNullOrEmpty(configFile)) {
+                    sourceFileFullPath = File;
+                }
+                else {
+                    configFileDirectory = System.IO.Path.GetDirectoryName(configFile);
+                    sourceFileFullPath = System.IO.Path.Combine(configFileDirectory, File);
+                }
+
+                if (System.IO.File.Exists(sourceFileFullPath)) {
+                    int lineOffset = 0;
+                    string rawXml = null;
+
+                    using (Stream sourceFileStream = new FileStream(sourceFileFullPath, FileMode.Open, FileAccess.Read, FileShare.Read)) {
+                        using (XmlUtil xmlUtil = new XmlUtil(sourceFileStream, sourceFileFullPath, true)) {
+                            if (xmlUtil.Reader.Name != ElementName) {
+                                throw new ConfigurationErrorsException(
+                                        SR.GetString(SR.Config_name_value_file_section_file_invalid_root, ElementName),
+                                        xmlUtil);
+                            }
+
+                            lineOffset = xmlUtil.Reader.LineNumber;
+                            rawXml = xmlUtil.CopySection();
+
+                            // Detect if there is any XML left over after the section
+                            while (!xmlUtil.Reader.EOF) {
+                                XmlNodeType t = xmlUtil.Reader.NodeType;
+                                if (t != XmlNodeType.Comment) {
+                                    throw new ConfigurationErrorsException(SR.GetString(SR.Config_source_file_format), xmlUtil);
+                                }
+
+                                xmlUtil.Reader.Read();
+                            }
+                        }
+                    }
+
+                    ConfigXmlReader internalReader = new ConfigXmlReader(rawXml, sourceFileFullPath, lineOffset);
+                    internalReader.Read();
+                    if (internalReader.MoveToNextAttribute()) {
+                        throw new ConfigurationErrorsException(SR.GetString(SR.Config_base_unrecognized_attribute, internalReader.Name), (XmlReader)internalReader);
+                    }
+
+                    internalReader.MoveToElement();
+
+                    base.DeserializeElement(internalReader, serializeCollectionKey);
+                }
+            }
+        }
+    }
+}
+

external/referencesource/System.Configuration/System/Configuration/BaseConfigurationRecord.cs.REMOVED.git-id

@@ -0,0 +1 @@
+c378f1d68b1844752e4d0e3355a78cd210a1c01c

external/referencesource/System.Configuration/System/Configuration/CRYPTPROTECT_PROMPTSTRUCT.cs

@@ -0,0 +1,32 @@
+//------------------------------------------------------------------------------
+// <copyright file="CRYPTPROTECT_PROMPTSTRUCT.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration
+{
+    using System.Collections.Specialized;
+    using System.Runtime.Serialization;
+    using System.Configuration.Provider;
+    using System.Xml;
+    using System.Text;
+    using  System.Runtime.InteropServices;
+    using Microsoft.Win32;
+
+    ////////////////////////////////////////////////////////////////////
+    ////////////////////////////////////////////////////////////////////
+    ////////////////////////////////////////////////////////////////////
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct CRYPTPROTECT_PROMPTSTRUCT : IDisposable
+    {
+        public int cbSize;
+        public int dwPromptFlags;
+        public IntPtr hwndApp;
+        public string szPrompt;
+        void IDisposable.Dispose()
+        {
+            hwndApp = IntPtr.Zero;
+        }
+    }
+}

external/referencesource/System.Configuration/System/Configuration/CallbackValidator.cs

@@ -0,0 +1,49 @@
+//------------------------------------------------------------------------------
+// <copyright file="CallbackValidator.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections;
+using System.IO;
+using System.Reflection;
+using System.Security.Permissions;
+using System.Xml;
+using System.Collections.Specialized;
+using System.Globalization;
+using System.ComponentModel;
+using System.Security;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace System.Configuration {
+
+    public sealed class CallbackValidator : ConfigurationValidatorBase {
+        Type _type;
+        ValidatorCallback _callback;
+
+        public CallbackValidator(Type type, ValidatorCallback callback) : this(callback) {
+            if (type == null) {
+                throw new ArgumentNullException("type");
+            }
+            _type = type;
+        }
+
+        // Do not check for null type here to handle the callback attribute case
+        internal CallbackValidator(ValidatorCallback callback) {
+            if (callback == null) {
+                throw new ArgumentNullException("callback");
+            }
+            _type = null;
+            _callback = callback;
+        }
+
+        public override bool CanValidate(Type type) {
+            return (type == _type || _type == null);
+        }
+        public override void Validate(object value) {
+            _callback(value);
+        }
+    }
+}

external/referencesource/System.Configuration/System/Configuration/CallbackValidatorAttribute.cs

@@ -0,0 +1,80 @@
+//------------------------------------------------------------------------------
+// <copyright file="CallbackValidatorAttribute.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Configuration.Internal;
+using System.Collections;
+using System.Collections.Specialized;
+using System.Collections.Generic;
+using System.IO;
+using System.Reflection;
+using System.Security.Permissions;
+using System.Xml;
+using System.Globalization;
+using System.ComponentModel;
+using System.Security;
+using System.Text;
+
+namespace System.Configuration {
+
+    [AttributeUsage(AttributeTargets.Property)]
+    public sealed class CallbackValidatorAttribute : ConfigurationValidatorAttribute {
+        private Type _type = null;
+        private String _callbackMethodName = String.Empty;
+        private ValidatorCallback _callbackMethod;
+
+        public override ConfigurationValidatorBase ValidatorInstance {
+            get {
+                if (_callbackMethod == null) {
+                    if (_type == null) {
+                        throw new ArgumentNullException("Type");
+                    }
+                    if (!String.IsNullOrEmpty(_callbackMethodName)) {
+                        MethodInfo methodInfo = _type.GetMethod(_callbackMethodName, BindingFlags.Public | BindingFlags.Static);
+                        if (methodInfo != null) {
+                            ParameterInfo[] parameters = methodInfo.GetParameters();
+                            if ((parameters.Length == 1) && (parameters[0].ParameterType == typeof(Object))) {
+                                // The security here depends on nobody changing the type or callback method once the declaring type has been
+                                // set. This currently isn't an issue since the attribute is instantiated then the declaring type is set without
+                                // user code having gotten a chance to run in between. But if the behavior of PropertyInfo.GetAttributes ever
+                                // changes such that it returns cached attribute instances rather than new instances every time, this assumption is void.
+                                _callbackMethod = (ValidatorCallback)TypeUtil.CreateDelegateRestricted(_declaringType, typeof(ValidatorCallback), methodInfo);
+                            }
+                        }
+                    }
+                }
+                if (_callbackMethod == null) {
+                    throw new System.ArgumentException(SR.GetString(SR.Validator_method_not_found, _callbackMethodName));
+                }
+
+                return new CallbackValidator(_callbackMethod);
+            }
+        }
+
+        public CallbackValidatorAttribute() {
+        }
+
+        public Type Type {
+            get {
+                return _type;
+            }
+            set {
+                _type = value;
+                _callbackMethod = null;
+            }
+        }
+
+        public String CallbackMethodName {
+            get {
+                return _callbackMethodName;
+            }
+            set {
+                _callbackMethodName = value;
+                _callbackMethod = null;
+            }
+        }
+    }
+}

external/referencesource/System.Configuration/System/Configuration/ClientConfigPerf.cs

@@ -0,0 +1,97 @@
+//------------------------------------------------------------------------------
+// <copyright file="ClientConfigPerf.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using System.Configuration.Internal;
+    using System.Globalization;
+    using System.Collections;
+    using System.IO;
+    using System.Xml;
+    using System.Security;
+    using System.Security.Permissions;
+    using System.Threading;
+    using System.Net;
+    using Assembly = System.Reflection.Assembly;
+    using StringBuilder = System.Text.StringBuilder;
+
+#if NOPERF
+    internal class ClientConfigPerf {
+        const int SIZE=100;
+
+        long[]      _counters;
+        long[]      _totals;
+        string[]    _names;
+        int         _current;
+        bool        _enabled;
+
+        static internal ClientConfigPerf ConfigSystem = new ClientConfigPerf(false);
+        static internal ClientConfigPerf ScanSections = new ClientConfigPerf(false);
+        static internal ClientConfigPerf CopySection = new ClientConfigPerf(false);
+        static internal ClientConfigPerf CopyXmlNode = new ClientConfigPerf(false);
+        static internal ClientConfigPerf GetConfig = new ClientConfigPerf(true);
+
+        ClientConfigPerf(bool enabled) {
+#if PERF
+            _enabled = enabled;
+            if (_enabled) {
+                _counters = new long[SIZE];
+                _totals = new long[SIZE];
+                _names = new string[SIZE];
+            }
+#endif
+        }
+
+        internal void Reset() {
+#if PERF
+            _current = 0;
+#endif
+        }
+
+        internal void Record(string name) {
+#if PERF
+            if (_enabled && _current < _counters.Length) {
+                _names[_current] = name;
+                Microsoft.Win32.SafeNativeMethods.QueryPerformanceCounter(out _counters[_current]);
+                if (_current > 0) {
+                    _totals[_current] += _counters[_current] - _counters[_current - 1];
+                }
+
+                _current++;
+            }
+#endif
+        }
+
+        void DoPrint() {
+#if PERF
+            if (_enabled) {
+                long lfreq = 0;
+                Microsoft.Win32.SafeNativeMethods.QueryPerformanceFrequency(out lfreq);
+                double freq = (double) lfreq;
+                double grandtotal = 0;
+
+                for (int i = 0; i < _current; i++) {
+                    double time = ((double)_totals[i]) / freq;
+                    grandtotal += time;
+                    Console.WriteLine("{0,-20} : {1:F6}", _names[i], time);
+                }
+
+                Console.WriteLine("{0,-20} : {1:F6}\n", "TOTAL", grandtotal);
+            }
+#endif
+        }
+
+        public static void Print() {
+#if PERF
+            ConfigSystem.DoPrint();
+            ScanSections.DoPrint();
+            CopySection.DoPrint();
+            CopyXmlNode.DoPrint();
+            GetConfig.DoPrint();
+#endif
+        }
+    }
+#endif
+}

external/referencesource/System.Configuration/System/Configuration/ClientConfigurationSystem.cs

@@ -0,0 +1,235 @@
+//------------------------------------------------------------------------------
+// <copyright file="ClientConfigurationSystem.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using System.Configuration.Internal;
+    using System.Globalization;
+    using System.Collections;
+    using System.IO;
+    using System.Xml;
+    using System.Security;
+    using System.Security.Permissions;
+    using System.Threading;
+    using System.Net;
+    using Assembly = System.Reflection.Assembly;
+    using StringBuilder = System.Text.StringBuilder;
+
+    internal sealed class ClientConfigurationSystem : IInternalConfigSystem {
+        private const string            SystemDiagnosticsConfigKey = "system.diagnostics"; 
+        private const string            SystemNetGroupKey = "system.net/";                 
+
+        private IConfigSystem           _configSystem;
+        private IInternalConfigRoot     _configRoot;
+        private ClientConfigurationHost _configHost;
+        private IInternalConfigRecord   _machineConfigRecord;
+        private IInternalConfigRecord   _completeConfigRecord;
+        private Exception               _initError;    
+        private bool                    _isInitInProgress;      
+        private bool                    _isMachineConfigInited; 
+        private bool                	_isUserConfigInited;
+        private bool                    _isAppConfigHttp;       
+        
+
+        internal ClientConfigurationSystem() {
+            _configSystem = new ConfigSystem();
+            _configSystem.Init(typeof(ClientConfigurationHost), null, null);
+
+            _configHost = (ClientConfigurationHost) _configSystem.Host;
+            _configRoot = _configSystem.Root;
+
+            _configRoot.ConfigRemoved += OnConfigRemoved;
+
+            _isAppConfigHttp = _configHost.IsAppConfigHttp;
+
+            // VSWhidbey 606116: Config has a dependency on Uri class which has
+            // a new static constructor that calls config.  We need a dummy reference
+            // to Uri class so the static constructor would be involved first to
+            // initialize config.
+            string dummy = System.Uri.SchemeDelimiter;
+        }
+
+        // Return true if the section might be used during initialization of the configuration system,
+        // and thus lead to deadlock if appropriate measures are not taken.
+        bool IsSectionUsedInInit(string configKey) {
+            return configKey == SystemDiagnosticsConfigKey || (_isAppConfigHttp && configKey.StartsWith(SystemNetGroupKey, StringComparison.Ordinal));
+        }
+        
+        // Return true if the section should only use the machine configuration and not use the
+        // application configuration. This is only true for system.net sections when the configuration
+        // file for the application is downloaded via http using System.Net.WebClient.
+        bool DoesSectionOnlyUseMachineConfig(string configKey) {
+            return _isAppConfigHttp && configKey.StartsWith(SystemNetGroupKey, StringComparison.Ordinal);
+        }
+
+        // Ensure that initialization has completed, while handling re-entrancy issues
+        // for certain sections that may be used during initialization itself.
+        void EnsureInit(string configKey) {
+            bool doInit = false;
+
+            lock (this) {
+                // If the user config is not initialized, then we must either:
+                //    a. Perform the initialization ourselves if no other thread is doing it, or
+                //    b. Wait for the initialization to complete if we know the section is not used during initialization itself, or
+                //    c. Ignore initialization if the section can be used during initialization. Note that GetSection()
+                //       returns null is initialization has not completed.
+                if (!_isUserConfigInited) {
+                    if (!_isInitInProgress) {
+                        _isInitInProgress = true;
+                        doInit = true;
+                    }
+                    else if (!IsSectionUsedInInit(configKey)) {
+                        // Wait for initialization to complete.
+                        Monitor.Wait(this);
+                    }
+                }
+            }
+
+            if (doInit) {
+                try {
+                    try {
+                        try {
+                            // Initialize machine configuration.
+                            _machineConfigRecord = _configRoot.GetConfigRecord(
+                                    ClientConfigurationHost.MachineConfigPath);
+
+                            _machineConfigRecord.ThrowIfInitErrors();
+
+                            // Make machine configuration available to system.net sections
+                            // when application configuration is downloaded via http.
+                            _isMachineConfigInited = true;
+
+                            //
+                            // Prevent deadlocks in the networking classes by loading 
+                            // networking config before making a networking request. 
+                            // Any requests for sections used in initialization during 
+                            // the call to EnsureConfigLoaded() will be served by 
+                            // _machine.config or will return null.
+                            //
+                            if (_isAppConfigHttp) {
+                                ConfigurationManagerHelperFactory.Instance.EnsureNetConfigLoaded();
+                            }
+
+                            //
+                            // Now load the rest of configuration
+                            //
+                            _configHost.RefreshConfigPaths();
+                            string configPath;
+                            if (_configHost.HasLocalConfig) {
+                                configPath = ClientConfigurationHost.LocalUserConfigPath;
+                            }
+                            else if (_configHost.HasRoamingConfig) {
+                                configPath = ClientConfigurationHost.RoamingUserConfigPath;
+                            }
+                            else {
+                                configPath = ClientConfigurationHost.ExeConfigPath;
+                            }
+
+                            _completeConfigRecord = _configRoot.GetConfigRecord(configPath);
+                            _completeConfigRecord.ThrowIfInitErrors();
+
+                            _isUserConfigInited = true;
+                        }
+                        catch (Exception e) {
+                            _initError = new ConfigurationErrorsException(SR.GetString(SR.Config_client_config_init_error), e);
+                            throw _initError;
+                        }
+                    }
+                    catch {
+                        ConfigurationManager.SetInitError(_initError);
+                        _isMachineConfigInited = true;
+                        _isUserConfigInited = true;
+                        throw;
+                    }
+                }
+                finally {
+                    lock (this) {
+                        try {
+                            // Notify ConfigurationSettings that initialization has fully completed,
+                            // even if unsuccessful.
+                            ConfigurationManager.CompleteConfigInit();
+
+                            _isInitInProgress = false;
+
+                        }
+                        finally {
+                            // Wake up all threads waiting for initialization to complete.
+                            Monitor.PulseAll(this);
+                        }
+                    }
+                }
+            }
+        }
+
+        private void PrepareClientConfigSystem(string sectionName) {
+            // Ensure the configuration system is inited for this section.
+            if (!_isUserConfigInited) {
+                EnsureInit(sectionName);
+            }
+
+            // If an error occurred during initialzation, throw it.
+            if (_initError != null) {
+                throw _initError;
+            }
+        }
+
+        //
+        // If config has been removed because initialization was not complete,
+        // fetch a new configuration record. The record will be created and
+        // completely initialized as RequireCompleteInit() will have been called
+        // on the ClientConfigurationHost before we receive this event.
+        //
+        private void OnConfigRemoved(object sender, InternalConfigEventArgs e) {
+            try {
+                IInternalConfigRecord newConfigRecord = _configRoot.GetConfigRecord(_completeConfigRecord.ConfigPath);
+                _completeConfigRecord = newConfigRecord;
+                _completeConfigRecord.ThrowIfInitErrors();
+            }
+            catch (Exception ex) {
+                _initError = new ConfigurationErrorsException(SR.GetString(SR.Config_client_config_init_error), ex);
+                ConfigurationManager.SetInitError(_initError);
+                throw _initError;
+            }
+        }
+
+        object IInternalConfigSystem.GetSection(string sectionName) {
+            PrepareClientConfigSystem(sectionName);
+
+            // Get the appropriate config record for the section.
+            IInternalConfigRecord configRecord = null;
+            if (DoesSectionOnlyUseMachineConfig(sectionName)) {
+                if (_isMachineConfigInited) {
+                    configRecord = _machineConfigRecord;
+                }
+            }
+            else {
+                if (_isUserConfigInited) {
+                    configRecord = _completeConfigRecord;
+                }
+            }
+
+            // Call GetSection(), or return null if no configuration is yet available.
+            if (configRecord != null) {
+                return configRecord.GetSection(sectionName);
+            }
+            else {
+                return null;
+            }
+        }
+
+        void IInternalConfigSystem.RefreshConfig(string sectionName) {
+            PrepareClientConfigSystem(sectionName);
+
+            if (_isMachineConfigInited) {
+                _machineConfigRecord.RefreshSection(sectionName);
+            }
+        }
+
+        // Supports user config
+        bool IInternalConfigSystem.SupportsUserConfig {
+            get {return true;}
+        }
+    }
+}

external/referencesource/System.Configuration/System/Configuration/CommaDelimitedStringAttributeCollectionConverter.cs

@@ -0,0 +1,41 @@
+//------------------------------------------------------------------------------
+// <copyright file="CommaDelimitedStringCollectionConverter.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections;
+using System.IO;
+using System.Reflection;
+using System.Security.Permissions;
+using System.Xml;
+using System.Collections.Specialized;
+using System.Globalization;
+using System.ComponentModel;
+using System.Security;
+using System.Text;
+
+namespace System.Configuration {
+
+    public sealed class CommaDelimitedStringCollectionConverter : ConfigurationConverterBase {
+
+        public override object ConvertTo(ITypeDescriptorContext ctx, CultureInfo ci, object value, Type type) {
+
+            ValidateType(value, typeof(CommaDelimitedStringCollection));
+            CommaDelimitedStringCollection internalValue = value as CommaDelimitedStringCollection;
+            if (internalValue != null) {
+                return internalValue.ToString();
+            }
+            else {
+                return null;
+            }
+        }
+
+        public override object ConvertFrom(ITypeDescriptorContext ctx, CultureInfo ci, object data) {
+            CommaDelimitedStringCollection attributeCollection = new CommaDelimitedStringCollection();
+            attributeCollection.FromString((string)data);
+            return attributeCollection;
+        }
+    }
+}

external/referencesource/System.Configuration/System/Configuration/ConfigDefinitionUpdates.cs

@@ -0,0 +1,72 @@
+//------------------------------------------------------------------------------
+// <copyright file="ConfigDefinitionUpdates.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using System.Collections;
+
+    //
+    // Contains all the updates to section definitions across all location sections.
+    //
+    internal class ConfigDefinitionUpdates {
+        private ArrayList   _locationUpdatesList;
+        private bool        _requireLocationWritten;
+
+        internal ConfigDefinitionUpdates() {
+            _locationUpdatesList = new ArrayList();
+        }
+
+        //
+        // Find the location update with a certain set of location attributes.
+        //
+        internal LocationUpdates FindLocationUpdates(OverrideModeSetting overrideMode, bool inheritInChildApps) {
+            foreach (LocationUpdates locationUpdates in _locationUpdatesList) {
+                if (    OverrideModeSetting.CanUseSameLocationTag(locationUpdates.OverrideMode, overrideMode) && 
+                        locationUpdates.InheritInChildApps == inheritInChildApps) {
+                    return locationUpdates;
+                }
+            }
+
+            return null;
+        }
+
+        //
+        // Add a section definition update to the correct location update.
+        //
+        internal DefinitionUpdate AddUpdate(OverrideModeSetting overrideMode, bool inheritInChildApps, bool moved, string updatedXml, SectionRecord sectionRecord) {
+            LocationUpdates locationUpdates = FindLocationUpdates(overrideMode, inheritInChildApps);
+            if (locationUpdates == null) {
+                locationUpdates = new LocationUpdates(overrideMode, inheritInChildApps);
+                _locationUpdatesList.Add(locationUpdates);
+            }
+
+            DefinitionUpdate definitionUpdate = new DefinitionUpdate(sectionRecord.ConfigKey, moved, updatedXml, sectionRecord);
+            locationUpdates.SectionUpdates.AddSection(definitionUpdate);
+            return definitionUpdate;
+        }
+
+        //
+        // Determine which section definition updates are new.
+        //
+        internal void CompleteUpdates() {
+            foreach (LocationUpdates locationUpdates in _locationUpdatesList) {
+                locationUpdates.CompleteUpdates();
+            }
+        }
+
+        internal ArrayList LocationUpdatesList {
+            get {return _locationUpdatesList;}
+        }
+
+        internal bool RequireLocation {
+            get { return _requireLocationWritten; }
+            set { _requireLocationWritten = value; }
+        }
+
+        internal void FlagLocationWritten() {
+            _requireLocationWritten = false;
+        }
+    }
+}