Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / SystemNet / Net / PeerToPeer / UnsafePeerToPeerMethods.cs / 2 / UnsafePeerToPeerMethods.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System.Security.Permissions; namespace System.Net.PeerToPeer { using System; using System.Collections.Generic; using System.Text; using Microsoft.Win32.SafeHandles; using System.Security; using System.Runtime.InteropServices; using System.Runtime.ConstrainedExecution; using System.Threading; using System.Net.Sockets; using Microsoft.Win32; using System.Diagnostics; [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_PNRP_CLOUD_INFO { internal IntPtr pwzCloudName; internal UInt32 dwScope; internal UInt32 dwScopeId; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_PNRP_REGISTRATION_INFO { internal string pwszCloudName; internal string pwszPublishingIdentity; internal UInt32 cAddresses; internal IntPtr ArrayOfSOCKADDRIN6Pointers; internal ushort wport; internal string pwszComment; internal PEER_DATA payLoad; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_PNRP_ENDPOINT_INFO { internal IntPtr pwszPeerName; internal UInt32 cAddresses; internal IntPtr ArrayOfSOCKADDRIN6Pointers; internal IntPtr pwszComment; internal PEER_DATA payLoad; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_DATA { internal UInt32 cbPayload; internal IntPtr pbPayload; } [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal static class UnsafeP2PNativeMethods { internal const string P2P = "p2p.dll"; [DllImport(P2P, CharSet = CharSet.Unicode)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] internal extern static void PeerFreeData(IntPtr dataToFree); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerPnrpGetCloudInfo(out UInt32 pNumClouds, out SafePeerData pArrayOfClouds); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerPnrpStartup(ushort versionRequired); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerCreatePeerName(string identity, string classfier, out SafePeerData peerName); //[DllImport(P2P, CharSet = CharSet.Unicode)] //internal extern static Int32 PeerCreatePeerName(string identity, string classfier, out SafePeerData peerName); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerIdentityGetDefault(out SafePeerData defaultIdentity); /* [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerIdentityCreate(string classifier, string friendlyName, IntPtr hCryptoProv, out SafePeerData defaultIdentity); */ [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerNameToPeerHostName(string peerName, out SafePeerData peerHostName); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerHostNameToPeerName(string peerHostName, out SafePeerData peerName); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpRegister(string pcwzPeerName, ref PEER_PNRP_REGISTRATION_INFO registrationInfo, out SafePeerNameUnregister handle); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpUnregister(IntPtr handle); [System.Security.SecurityCritical] [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpUpdateRegistration(SafePeerNameUnregister hRegistration, ref PEER_PNRP_REGISTRATION_INFO registrationInfo); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpResolve(string pcwzPeerNAme, string pcwzCloudName, ref UInt32 pcEndPoints, out SafePeerData pEndPoints); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpStartResolve(string pcwzPeerNAme, string pcwzCloudName, UInt32 cEndPoints, SafeWaitHandle hEvent, out SafePeerNameEndResolve safePeerNameEndResolve); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpGetEndpoint(IntPtr Handle, out SafePeerData pEndPoint); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpEndResolve(IntPtr Handle); private static object s_InternalSyncObject; private static bool s_Initialized; private const int PNRP_VERSION = 2; private static object InternalSyncObject { get { if (s_InternalSyncObject == null) { object o = new object(); Interlocked.CompareExchange(ref s_InternalSyncObject, o, null); } return s_InternalSyncObject; } } //// [System.Security.SecurityCritical] internal static void PnrpStartup() { if (!s_Initialized) { lock (InternalSyncObject) { if (!s_Initialized) { Int32 result = PeerPnrpStartup(PNRP_VERSION); if (result != 0) { throw new PeerToPeerException(SR.GetString(SR.Pnrp_StartupFailed), Marshal.GetExceptionForHR(result)); } s_Initialized = true; } } } } //end of method PnrpStartup } //// // // [System.Security.SecurityCritical(System.Security.SecurityCriticalScope.Everything)] [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal sealed class SafePeerData : SafeHandleZeroOrMinusOneIsInvalid { private SafePeerData() : base(true) { } //private SafePeerData(bool ownsHandle) : base(ownsHandle) { } internal string UnicodeString { get { return Marshal.PtrToStringUni(handle); } } protected override bool ReleaseHandle() { UnsafeP2PNativeMethods.PeerFreeData(handle); SetHandleAsInvalid(); //Mark it closed - This does not change the value of the handle it self SetHandle(IntPtr.Zero); //Mark it invalid - Change the value to Zero return true; } } //// // [System.Security.SecurityCritical(System.Security.SecurityCriticalScope.Everything)] [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal sealed class SafePeerNameUnregister : SafeHandleZeroOrMinusOneIsInvalid { internal SafePeerNameUnregister() : base(true) { } //internal SafePeerNameUnregister(bool ownsHandle) : base(ownsHandle) { } protected override bool ReleaseHandle() { UnsafeP2PNativeMethods.PeerPnrpUnregister(handle); SetHandleAsInvalid(); //Mark it closed - This does not change the value of the handle it self SetHandle(IntPtr.Zero); //Mark it invalid - Change the value to Zero return true; } } //// // [System.Security.SecurityCritical(System.Security.SecurityCriticalScope.Everything)] [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal sealed class SafePeerNameEndResolve : SafeHandleZeroOrMinusOneIsInvalid { internal SafePeerNameEndResolve() : base(true) { } //internal SafePeerNameEndResolve(bool ownsHandle) : base(ownsHandle) { } protected override bool ReleaseHandle() { UnsafeP2PNativeMethods.PeerPnrpEndResolve(handle); SetHandleAsInvalid(); //Mark it closed - This does not change the value of the handle it self SetHandle(IntPtr.Zero); //Mark it invalid - Change the value to Zero return true; } } ///// /// Determines whether P2P is installed /// Note static constructors are guaranteed to be /// run in a thread safe manner. so no locks are necessary /// internal static class PeerToPeerOSHelper { private const string OSInstallTypeRegKey = @"Software\Microsoft\Windows NT\CurrentVersion"; private const string OSInstallTypeRegKeyPath = @"HKEY_LOCAL_MACHINE\" + OSInstallTypeRegKey; private const string OSInstallTypeRegName = "InstallationType"; private const string InstallTypeStringServerCore = "Server Core"; private static bool s_supportsP2P = false; private static SafeLoadLibrary s_P2PLibrary = null; //// [System.Security.SecurityCritical] static PeerToPeerOSHelper() { if (IsSupportedOS()) { // if OS is supported, but p2p.dll is not available, P2P is not supported (original behavior) s_P2PLibrary = SafeLoadLibrary.LoadLibraryEx(UnsafeP2PNativeMethods.P2P); if (!s_P2PLibrary.IsInvalid) { IntPtr Address = UnsafeSystemNativeMethods.GetProcAddress(s_P2PLibrary, "PeerCreatePeerName"); if (Address != IntPtr.Zero) { s_supportsP2P = true; } } } //else --> the SafeLoadLibrary would have already been marked // closed by the LoadLibraryEx call above. } [SecurityCritical] private static bool IsSupportedOS() { // extend this method when adding further OS/install type restrictions // P2P is not supported on Server Core installation type if (IsServerCore()) { return false; } return true; } [SecurityCritical] [RegistryPermission(SecurityAction.Assert, Read = OSInstallTypeRegKeyPath)] private static bool IsServerCore() { // This code does the same as System.Net.ComNetOS.GetWindowsInstallType(). Since ComNetOS is internal and // we don't want to add InternalsVisibleToAttribute to System.dll, we have to duplicate the code. try { using (RegistryKey installTypeKey = Registry.LocalMachine.OpenSubKey(OSInstallTypeRegKey)) { string installType = installTypeKey.GetValue(OSInstallTypeRegName) as string; if (string.IsNullOrEmpty(installType)) { Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, SR.GetString(SR.P2P_empty_osinstalltype, OSInstallTypeRegKey + "\\" + OSInstallTypeRegName)); } else { if (String.Compare(installType, InstallTypeStringServerCore, StringComparison.OrdinalIgnoreCase) == 0) { return true; } } } } catch (UnauthorizedAccessException e) { Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, SR.GetString(SR.P2P_cant_determine_osinstalltype, OSInstallTypeRegKey, e.Message)); } catch (SecurityException e) { Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, SR.GetString(SR.P2P_cant_determine_osinstalltype, OSInstallTypeRegKey, e.Message)); } return false; } internal static bool SupportsP2P { get { return s_supportsP2P; } } internal static IntPtr P2PModuleHandle { //// // // // // [System.Security.SecurityCritical] [SecurityPermissionAttribute(SecurityAction.LinkDemand, UnmanagedCode=true)] get { if (!s_P2PLibrary.IsClosed && !s_P2PLibrary.IsInvalid) return s_P2PLibrary.DangerousGetHandle(); return IntPtr.Zero; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// // // // // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System.Security.Permissions; namespace System.Net.PeerToPeer { using System; using System.Collections.Generic; using System.Text; using Microsoft.Win32.SafeHandles; using System.Security; using System.Runtime.InteropServices; using System.Runtime.ConstrainedExecution; using System.Threading; using System.Net.Sockets; using Microsoft.Win32; using System.Diagnostics; [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_PNRP_CLOUD_INFO { internal IntPtr pwzCloudName; internal UInt32 dwScope; internal UInt32 dwScopeId; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_PNRP_REGISTRATION_INFO { internal string pwszCloudName; internal string pwszPublishingIdentity; internal UInt32 cAddresses; internal IntPtr ArrayOfSOCKADDRIN6Pointers; internal ushort wport; internal string pwszComment; internal PEER_DATA payLoad; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_PNRP_ENDPOINT_INFO { internal IntPtr pwszPeerName; internal UInt32 cAddresses; internal IntPtr ArrayOfSOCKADDRIN6Pointers; internal IntPtr pwszComment; internal PEER_DATA payLoad; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] internal struct PEER_DATA { internal UInt32 cbPayload; internal IntPtr pbPayload; } [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal static class UnsafeP2PNativeMethods { internal const string P2P = "p2p.dll"; [DllImport(P2P, CharSet = CharSet.Unicode)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] internal extern static void PeerFreeData(IntPtr dataToFree); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerPnrpGetCloudInfo(out UInt32 pNumClouds, out SafePeerData pArrayOfClouds); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerPnrpStartup(ushort versionRequired); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerCreatePeerName(string identity, string classfier, out SafePeerData peerName); //[DllImport(P2P, CharSet = CharSet.Unicode)] //internal extern static Int32 PeerCreatePeerName(string identity, string classfier, out SafePeerData peerName); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerIdentityGetDefault(out SafePeerData defaultIdentity); /* [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerIdentityCreate(string classifier, string friendlyName, IntPtr hCryptoProv, out SafePeerData defaultIdentity); */ [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerNameToPeerHostName(string peerName, out SafePeerData peerHostName); [DllImport(P2P, CharSet = CharSet.Unicode)] internal extern static Int32 PeerHostNameToPeerName(string peerHostName, out SafePeerData peerName); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpRegister(string pcwzPeerName, ref PEER_PNRP_REGISTRATION_INFO registrationInfo, out SafePeerNameUnregister handle); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpUnregister(IntPtr handle); [System.Security.SecurityCritical] [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpUpdateRegistration(SafePeerNameUnregister hRegistration, ref PEER_PNRP_REGISTRATION_INFO registrationInfo); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpResolve(string pcwzPeerNAme, string pcwzCloudName, ref UInt32 pcEndPoints, out SafePeerData pEndPoints); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpStartResolve(string pcwzPeerNAme, string pcwzCloudName, UInt32 cEndPoints, SafeWaitHandle hEvent, out SafePeerNameEndResolve safePeerNameEndResolve); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpGetEndpoint(IntPtr Handle, out SafePeerData pEndPoint); [DllImport(P2P, CharSet = CharSet.Unicode)] public extern static Int32 PeerPnrpEndResolve(IntPtr Handle); private static object s_InternalSyncObject; private static bool s_Initialized; private const int PNRP_VERSION = 2; private static object InternalSyncObject { get { if (s_InternalSyncObject == null) { object o = new object(); Interlocked.CompareExchange(ref s_InternalSyncObject, o, null); } return s_InternalSyncObject; } } //// [System.Security.SecurityCritical] internal static void PnrpStartup() { if (!s_Initialized) { lock (InternalSyncObject) { if (!s_Initialized) { Int32 result = PeerPnrpStartup(PNRP_VERSION); if (result != 0) { throw new PeerToPeerException(SR.GetString(SR.Pnrp_StartupFailed), Marshal.GetExceptionForHR(result)); } s_Initialized = true; } } } } //end of method PnrpStartup } //// // // [System.Security.SecurityCritical(System.Security.SecurityCriticalScope.Everything)] [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal sealed class SafePeerData : SafeHandleZeroOrMinusOneIsInvalid { private SafePeerData() : base(true) { } //private SafePeerData(bool ownsHandle) : base(ownsHandle) { } internal string UnicodeString { get { return Marshal.PtrToStringUni(handle); } } protected override bool ReleaseHandle() { UnsafeP2PNativeMethods.PeerFreeData(handle); SetHandleAsInvalid(); //Mark it closed - This does not change the value of the handle it self SetHandle(IntPtr.Zero); //Mark it invalid - Change the value to Zero return true; } } //// // [System.Security.SecurityCritical(System.Security.SecurityCriticalScope.Everything)] [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal sealed class SafePeerNameUnregister : SafeHandleZeroOrMinusOneIsInvalid { internal SafePeerNameUnregister() : base(true) { } //internal SafePeerNameUnregister(bool ownsHandle) : base(ownsHandle) { } protected override bool ReleaseHandle() { UnsafeP2PNativeMethods.PeerPnrpUnregister(handle); SetHandleAsInvalid(); //Mark it closed - This does not change the value of the handle it self SetHandle(IntPtr.Zero); //Mark it invalid - Change the value to Zero return true; } } //// // [System.Security.SecurityCritical(System.Security.SecurityCriticalScope.Everything)] [System.Security.SuppressUnmanagedCodeSecurityAttribute()] internal sealed class SafePeerNameEndResolve : SafeHandleZeroOrMinusOneIsInvalid { internal SafePeerNameEndResolve() : base(true) { } //internal SafePeerNameEndResolve(bool ownsHandle) : base(ownsHandle) { } protected override bool ReleaseHandle() { UnsafeP2PNativeMethods.PeerPnrpEndResolve(handle); SetHandleAsInvalid(); //Mark it closed - This does not change the value of the handle it self SetHandle(IntPtr.Zero); //Mark it invalid - Change the value to Zero return true; } } ///// /// Determines whether P2P is installed /// Note static constructors are guaranteed to be /// run in a thread safe manner. so no locks are necessary /// internal static class PeerToPeerOSHelper { private const string OSInstallTypeRegKey = @"Software\Microsoft\Windows NT\CurrentVersion"; private const string OSInstallTypeRegKeyPath = @"HKEY_LOCAL_MACHINE\" + OSInstallTypeRegKey; private const string OSInstallTypeRegName = "InstallationType"; private const string InstallTypeStringServerCore = "Server Core"; private static bool s_supportsP2P = false; private static SafeLoadLibrary s_P2PLibrary = null; //// [System.Security.SecurityCritical] static PeerToPeerOSHelper() { if (IsSupportedOS()) { // if OS is supported, but p2p.dll is not available, P2P is not supported (original behavior) s_P2PLibrary = SafeLoadLibrary.LoadLibraryEx(UnsafeP2PNativeMethods.P2P); if (!s_P2PLibrary.IsInvalid) { IntPtr Address = UnsafeSystemNativeMethods.GetProcAddress(s_P2PLibrary, "PeerCreatePeerName"); if (Address != IntPtr.Zero) { s_supportsP2P = true; } } } //else --> the SafeLoadLibrary would have already been marked // closed by the LoadLibraryEx call above. } [SecurityCritical] private static bool IsSupportedOS() { // extend this method when adding further OS/install type restrictions // P2P is not supported on Server Core installation type if (IsServerCore()) { return false; } return true; } [SecurityCritical] [RegistryPermission(SecurityAction.Assert, Read = OSInstallTypeRegKeyPath)] private static bool IsServerCore() { // This code does the same as System.Net.ComNetOS.GetWindowsInstallType(). Since ComNetOS is internal and // we don't want to add InternalsVisibleToAttribute to System.dll, we have to duplicate the code. try { using (RegistryKey installTypeKey = Registry.LocalMachine.OpenSubKey(OSInstallTypeRegKey)) { string installType = installTypeKey.GetValue(OSInstallTypeRegName) as string; if (string.IsNullOrEmpty(installType)) { Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, SR.GetString(SR.P2P_empty_osinstalltype, OSInstallTypeRegKey + "\\" + OSInstallTypeRegName)); } else { if (String.Compare(installType, InstallTypeStringServerCore, StringComparison.OrdinalIgnoreCase) == 0) { return true; } } } } catch (UnauthorizedAccessException e) { Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, SR.GetString(SR.P2P_cant_determine_osinstalltype, OSInstallTypeRegKey, e.Message)); } catch (SecurityException e) { Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, SR.GetString(SR.P2P_cant_determine_osinstalltype, OSInstallTypeRegKey, e.Message)); } return false; } internal static bool SupportsP2P { get { return s_supportsP2P; } } internal static IntPtr P2PModuleHandle { //// // // // // [System.Security.SecurityCritical] [SecurityPermissionAttribute(SecurityAction.LinkDemand, UnmanagedCode=true)] get { if (!s_P2PLibrary.IsClosed && !s_P2PLibrary.IsInvalid) return s_P2PLibrary.DangerousGetHandle(); return IntPtr.Zero; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.// // // //
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