Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / IO / IsolatedStorage / IsolatedStorage.cs / 1 / IsolatedStorage.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ * * Class: IsolatedStorage * * * Purpose: Provides access to Persisted Application / Assembly data * * Date: Feb 15, 2000 * ===========================================================*/ namespace System.IO.IsolatedStorage { using System; using System.IO; using System.Text; using System.Threading; using System.Reflection; using System.Collections; using System.Security; using System.Security.Policy; using System.Security.Permissions; using System.Security.Cryptography; using System.Runtime.Serialization; using System.Runtime.CompilerServices; using System.Runtime.Serialization.Formatters.Binary; using System.Runtime.InteropServices; using Microsoft.Win32; [Flags, Serializable] [System.Runtime.InteropServices.ComVisible(true)] public enum IsolatedStorageScope { // Dependency in native : COMIsolatedStorage.h None = 0x00, User = 0x01, Domain = 0x02, Assembly = 0x04, Roaming = 0x08, Machine = 0x10, Application = 0x20 } // not serializable [System.Runtime.InteropServices.ComVisible(true)] public abstract class IsolatedStorage : MarshalByRefObject { // Helper constants internal const IsolatedStorageScope c_Assembly = (IsolatedStorageScope.User | IsolatedStorageScope.Assembly); internal const IsolatedStorageScope c_Domain = (IsolatedStorageScope.User | IsolatedStorageScope.Assembly | IsolatedStorageScope.Domain); internal const IsolatedStorageScope c_AssemblyRoaming = (IsolatedStorageScope.Roaming | IsolatedStorageScope.User | IsolatedStorageScope.Assembly); internal const IsolatedStorageScope c_DomainRoaming = (IsolatedStorageScope.Roaming | IsolatedStorageScope.User | IsolatedStorageScope.Assembly | IsolatedStorageScope.Domain); internal const IsolatedStorageScope c_MachineAssembly = (IsolatedStorageScope.Machine | IsolatedStorageScope.Assembly); internal const IsolatedStorageScope c_MachineDomain = (IsolatedStorageScope.Machine | IsolatedStorageScope.Assembly | IsolatedStorageScope.Domain); internal const IsolatedStorageScope c_AppUser = (IsolatedStorageScope.Application | IsolatedStorageScope.User); internal const IsolatedStorageScope c_AppMachine = (IsolatedStorageScope.Application | IsolatedStorageScope.Machine); internal const IsolatedStorageScope c_AppUserRoaming = (IsolatedStorageScope.Roaming | IsolatedStorageScope.Application | IsolatedStorageScope.User); #if !FEATURE_PAL private const String s_Publisher = "Publisher"; #endif // !FEATURE_PAL private const String s_StrongName = "StrongName"; private const String s_Site = "Site"; private const String s_Url = "Url"; private const String s_Zone = "Zone"; private static Char[] s_Base32Char = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5'}; private ulong m_Quota; private bool m_ValidQuota; private Object m_DomainIdentity; private Object m_AssemIdentity; private Object m_AppIdentity; private String m_DomainName; private String m_AssemName; private String m_AppName; private IsolatedStorageScope m_Scope; private static IsolatedStorageFilePermission s_PermDomain; private static IsolatedStorageFilePermission s_PermMachineDomain; private static IsolatedStorageFilePermission s_PermDomainRoaming; private static IsolatedStorageFilePermission s_PermAssem; private static IsolatedStorageFilePermission s_PermMachineAssem; private static IsolatedStorageFilePermission s_PermAssemRoaming; private static IsolatedStorageFilePermission s_PermAppUser; private static IsolatedStorageFilePermission s_PermAppMachine; private static IsolatedStorageFilePermission s_PermAppUserRoaming; private static SecurityPermission s_PermControlEvidence; private static PermissionSet s_PermReflection; private static PermissionSet s_PermUnrestricted; private static PermissionSet s_PermExecution; #if _DEBUG private static bool s_fDebug = false; private static int s_iDebug = 0; #endif // This one should be a macro, expecting JIT to inline this. internal static bool IsRoaming(IsolatedStorageScope scope) { return ((scope & IsolatedStorageScope.Roaming) != 0); } internal bool IsRoaming() { return ((m_Scope & IsolatedStorageScope.Roaming) != 0); } // This one should be a macro, expecting JIT to inline this. internal static bool IsDomain(IsolatedStorageScope scope) { return ((scope & IsolatedStorageScope.Domain) != 0); } internal bool IsDomain() { return ((m_Scope & IsolatedStorageScope.Domain) != 0); } #if false // Not currently used // This one should be a macro, expecting JIT to inline this. internal static bool IsUser(IsolatedStorageScope scope) { return ((scope & IsolatedStorageScope.User) != 0); } #endif // This one should be a macro, expecting JIT to inline this. internal static bool IsMachine(IsolatedStorageScope scope) { return ((scope & IsolatedStorageScope.Machine) != 0); } internal bool IsAssembly() { return ((m_Scope & IsolatedStorageScope.Assembly) != 0); } // This one should be a macro, expecting JIT to inline this. internal static bool IsApp(IsolatedStorageScope scope) { return ((scope & IsolatedStorageScope.Application) != 0); } internal bool IsApp() { return ((m_Scope & IsolatedStorageScope.Application) != 0); } private String GetNameFromID(String typeID, String instanceID) { StringBuilder sb = new StringBuilder(); sb.Append(typeID); sb.Append(SeparatorInternal); sb.Append(instanceID); return sb.ToString(); } private static String GetPredefinedTypeName(Object o) { #if !FEATURE_PAL if (o is Publisher) return s_Publisher; else if (o is StrongName) return s_StrongName; #else if (o is StrongName) return s_StrongName; #endif // !FEATURE_PAL else if (o is Url) return s_Url; else if (o is Site) return s_Site; else if (o is Zone) return s_Zone; return null; } #if !FEATURE_PAL internal static String GetHash(Stream s) { SHA1Managed sha1 = new SHA1Managed(); byte[] b = sha1.ComputeHash(s); return ToBase32StringSuitableForDirName(b); } #else internal static String GetHash(Stream s) { const int MAX_BUFFER_SIZE = 1024; byte[] buffer = new byte[MAX_BUFFER_SIZE]; // 160 bits SHA1 output as defined in the Secure Hash Standard const int MESSAGE_DIGEST_LENGTH = 20; int digestLength = 0; byte[] digest = new byte[MESSAGE_DIGEST_LENGTH]; IntPtr hProv = (IntPtr) 0; IntPtr hHash = (IntPtr) 0; if( Win32Native.CryptAcquireContext(out hProv, null, null, 0, 0) == false) throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); if( Win32Native.CryptCreateHash(hProv, Win32Native.CALG_SHA1,(IntPtr) 0, 0, out hHash) == false) throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); int bytesRead; do { bytesRead = s.Read(buffer,0,MAX_BUFFER_SIZE); if (bytesRead > 0) { if(Win32Native.CryptHashData(hHash, buffer, bytesRead, 0) == false) { throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); } } } while (bytesRead > 0); // perform a sanity check to make sure the digest size equals MESSAGE_DIGEST_LENGTH int fourBytes = 4; if( Win32Native.CryptGetHashParam(hHash, Win32Native.HP_HASHSIZE, out digestLength, ref fourBytes, 0) == false || (digestLength != MESSAGE_DIGEST_LENGTH) ) { throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); } if( Win32Native.CryptGetHashParam(hHash, Win32Native.HP_HASHVAL, digest, ref digestLength, 0) == false) throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); if( Win32Native.CryptDestroyHash(hHash) == false) throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); if( Win32Native.CryptReleaseContext(hProv, 0) == false ) throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Exception")); return ToBase32StringSuitableForDirName(digest); } #endif // !FEATURE_PAL internal static String ToBase32StringSuitableForDirName(byte[] buff) { // This routine is optimised to be used with buffs of length 20 BCLDebug.Assert(((buff.Length % 5) == 0), "Unexpected hash length"); #if _DEBUG if (s_fDebug) { if (s_iDebug >= 10) { Console.Write("Stream : "); for (int j = 0; j> 5) | ((b3 & 0x60) >> 2))]); sb.Append(s_Base32Char[( ((b1 & 0xE0) >> 5) | ((b4 & 0x60) >> 2))]); // Consume 3 MSB bits of b2, 1 MSB bit of b3, b4 b2 >>= 5; BCLDebug.Assert(((b2 & 0xF8) == 0), "Unexpected set bits"); if ((b3 & 0x80) != 0) b2 |= 0x08; if ((b4 & 0x80) != 0) b2 |= 0x10; sb.Append(s_Base32Char[b2]); } while (i < l); #if _DEBUG if (s_fDebug) { if (s_iDebug >= 10) Console.WriteLine("Hash : " + sb.ToString()); } #endif return sb.ToString(); } #if false // This is not used. private static String ToBase64StringSuitableForDirName(byte[] buff) { String s = Convert.ToBase64String(buff); StringBuilder sb = new StringBuilder(); // Remove certain chars not suited for file names for (int i=0; i m_Quota) m_Quota = 0; else m_Quota -= denied; } } } m_ValidQuota = true; #if _DEBUG if (s_fDebug) { if (s_iDebug >= 1) { if (psAllowed != null) Console.WriteLine("Allowed PS : " + psAllowed); if (psDenied != null) Console.WriteLine("Denied PS : " + psDenied); } } #endif } #if _DEBUG private static void DebugLog(Object o, MemoryStream ms) { if (s_fDebug) { if (s_iDebug >= 1) Console.WriteLine(o.ToString()); if (s_iDebug >= 10) { byte[] p = ms.GetBuffer(); for (int _i=0; _i
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