Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / clr / src / BCL / System / Security / Permissions / EnvironmentPermission.cs / 1 / EnvironmentPermission.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // EnvironmentPermission.cs // namespace System.Security.Permissions { using System.Security; using System; using SecurityElement = System.Security.SecurityElement; using System.Security.Util; using System.IO; using System.Globalization; [Flags,Serializable] [System.Runtime.InteropServices.ComVisible(true)] public enum EnvironmentPermissionAccess { NoAccess = 0x00, Read = 0x01, Write = 0x02, AllAccess = 0x03, } [Serializable] internal class EnvironmentStringExpressionSet : StringExpressionSet { public EnvironmentStringExpressionSet() : base( true, null, false ) { } public EnvironmentStringExpressionSet( String str ) : base( true, str, false ) { } protected override StringExpressionSet CreateNewEmpty() { return new EnvironmentStringExpressionSet(); } protected override bool StringSubsetString( String left, String right, bool ignoreCase ) { return (ignoreCase?(String.Compare( left, right, StringComparison.OrdinalIgnoreCase) == 0): (String.Compare( left, right, StringComparison.Ordinal) == 0)); } protected override String ProcessWholeString( String str ) { return str; } protected override String ProcessSingleString( String str ) { return str; } } [System.Runtime.InteropServices.ComVisible(true)] [Serializable()] sealed public class EnvironmentPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission { private StringExpressionSet m_read; private StringExpressionSet m_write; private bool m_unrestricted; public EnvironmentPermission(PermissionState state) { if (state == PermissionState.Unrestricted) m_unrestricted = true; else if (state == PermissionState.None) m_unrestricted = false; else throw new ArgumentException(Environment.GetResourceString("Argument_InvalidPermissionState")); } public EnvironmentPermission( EnvironmentPermissionAccess flag, String pathList ) { SetPathList( flag, pathList ); } public void SetPathList( EnvironmentPermissionAccess flag, String pathList ) { VerifyFlag( flag ); m_unrestricted = false; if ((flag & EnvironmentPermissionAccess.Read) != 0) m_read = null; if ((flag & EnvironmentPermissionAccess.Write) != 0) m_write = null; AddPathList( flag, pathList ); } public void AddPathList( EnvironmentPermissionAccess flag, String pathList ) { VerifyFlag( flag ); if (FlagIsSet( flag, EnvironmentPermissionAccess.Read )) { if (m_read == null) m_read = new EnvironmentStringExpressionSet(); m_read.AddExpressions( pathList ); } if (FlagIsSet( flag, EnvironmentPermissionAccess.Write )) { if (m_write == null) m_write = new EnvironmentStringExpressionSet(); m_write.AddExpressions( pathList ); } } public String GetPathList( EnvironmentPermissionAccess flag ) { VerifyFlag( flag ); ExclusiveFlag( flag ); if (FlagIsSet( flag, EnvironmentPermissionAccess.Read )) { if (m_read == null) { return ""; } return m_read.ToString(); } if (FlagIsSet( flag, EnvironmentPermissionAccess.Write )) { if (m_write == null) { return ""; } return m_write.ToString(); } /* not reached */ return ""; } private void VerifyFlag( EnvironmentPermissionAccess flag ) { if ((flag & ~EnvironmentPermissionAccess.AllAccess) != 0) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Arg_EnumIllegalVal"), (int)flag)); } private void ExclusiveFlag( EnvironmentPermissionAccess flag ) { if (flag == EnvironmentPermissionAccess.NoAccess) { throw new ArgumentException( Environment.GetResourceString("Arg_EnumNotSingleFlag") ); } if (((int)flag & ((int)flag-1)) != 0) { throw new ArgumentException( Environment.GetResourceString("Arg_EnumNotSingleFlag") ); } } private bool FlagIsSet( EnvironmentPermissionAccess flag, EnvironmentPermissionAccess question ) { return (flag & question) != 0; } private bool IsEmpty() { return (!m_unrestricted && (this.m_read == null || this.m_read.IsEmpty()) && (this.m_write == null || this.m_write.IsEmpty())); } //------------------------------------------------------ // // CODEACCESSPERMISSION IMPLEMENTATION // //----------------------------------------------------- public bool IsUnrestricted() { return m_unrestricted; } //----------------------------------------------------- // // IPERMISSION IMPLEMENTATION // //----------------------------------------------------- public override bool IsSubsetOf(IPermission target) { if (target == null) { return this.IsEmpty(); } try { EnvironmentPermission operand = (EnvironmentPermission)target; if (operand.IsUnrestricted()) return true; else if (this.IsUnrestricted()) return false; else return ((this.m_read == null || this.m_read.IsSubsetOf( operand.m_read )) && (this.m_write == null || this.m_write.IsSubsetOf( operand.m_write ))); } catch (InvalidCastException) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName) ); } } public override IPermission Intersect(IPermission target) { if (target == null) { return null; } else if (!VerifyType(target)) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName) ); } else if (this.IsUnrestricted()) { return target.Copy(); } EnvironmentPermission operand = (EnvironmentPermission)target; if (operand.IsUnrestricted()) { return this.Copy(); } StringExpressionSet intersectRead = this.m_read == null ? null : this.m_read.Intersect( operand.m_read ); StringExpressionSet intersectWrite = this.m_write == null ? null : this.m_write.Intersect( operand.m_write ); if ((intersectRead == null || intersectRead.IsEmpty()) && (intersectWrite == null || intersectWrite.IsEmpty())) { return null; } EnvironmentPermission intersectPermission = new EnvironmentPermission(PermissionState.None); intersectPermission.m_unrestricted = false; intersectPermission.m_read = intersectRead; intersectPermission.m_write = intersectWrite; return intersectPermission; } public override IPermission Union(IPermission other) { if (other == null) { return this.Copy(); } else if (!VerifyType(other)) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName) ); } EnvironmentPermission operand = (EnvironmentPermission)other; if (this.IsUnrestricted() || operand.IsUnrestricted()) { return new EnvironmentPermission( PermissionState.Unrestricted ); } StringExpressionSet unionRead = this.m_read == null ? operand.m_read : this.m_read.Union( operand.m_read ); StringExpressionSet unionWrite = this.m_write == null ? operand.m_write : this.m_write.Union( operand.m_write ); if ((unionRead == null || unionRead.IsEmpty()) && (unionWrite == null || unionWrite.IsEmpty())) { return null; } EnvironmentPermission unionPermission = new EnvironmentPermission(PermissionState.None); unionPermission.m_unrestricted = false; unionPermission.m_read = unionRead; unionPermission.m_write = unionWrite; return unionPermission; } public override IPermission Copy() { EnvironmentPermission copy = new EnvironmentPermission(PermissionState.None); if (this.m_unrestricted) { copy.m_unrestricted = true; } else { copy.m_unrestricted = false; if (this.m_read != null) { copy.m_read = this.m_read.Copy(); } if (this.m_write != null) { copy.m_write = this.m_write.Copy(); } } return copy; } public override SecurityElement ToXml() { SecurityElement esd = CodeAccessPermission.CreatePermissionElement( this, "System.Security.Permissions.EnvironmentPermission" ); if (!IsUnrestricted()) { if (this.m_read != null && !this.m_read.IsEmpty()) { esd.AddAttribute( "Read", SecurityElement.Escape( m_read.ToString() ) ); } if (this.m_write != null && !this.m_write.IsEmpty()) { esd.AddAttribute( "Write", SecurityElement.Escape( m_write.ToString() ) ); } } else { esd.AddAttribute( "Unrestricted", "true" ); } return esd; } public override void FromXml(SecurityElement esd) { CodeAccessPermission.ValidateElement( esd, this ); String et; if (XMLUtil.IsUnrestricted(esd)) { m_unrestricted = true; return; } m_unrestricted = false; m_read = null; m_write = null; et = esd.Attribute( "Read" ); if (et != null) { m_read = new EnvironmentStringExpressionSet( et ); } et = esd.Attribute( "Write" ); if (et != null) { m_write = new EnvironmentStringExpressionSet( et ); } } ///int IBuiltInPermission.GetTokenIndex() { return EnvironmentPermission.GetTokenIndex(); } internal static int GetTokenIndex() { return BuiltInPermissionIndex.EnvironmentPermissionIndex; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // EnvironmentPermission.cs // namespace System.Security.Permissions { using System.Security; using System; using SecurityElement = System.Security.SecurityElement; using System.Security.Util; using System.IO; using System.Globalization; [Flags,Serializable] [System.Runtime.InteropServices.ComVisible(true)] public enum EnvironmentPermissionAccess { NoAccess = 0x00, Read = 0x01, Write = 0x02, AllAccess = 0x03, } [Serializable] internal class EnvironmentStringExpressionSet : StringExpressionSet { public EnvironmentStringExpressionSet() : base( true, null, false ) { } public EnvironmentStringExpressionSet( String str ) : base( true, str, false ) { } protected override StringExpressionSet CreateNewEmpty() { return new EnvironmentStringExpressionSet(); } protected override bool StringSubsetString( String left, String right, bool ignoreCase ) { return (ignoreCase?(String.Compare( left, right, StringComparison.OrdinalIgnoreCase) == 0): (String.Compare( left, right, StringComparison.Ordinal) == 0)); } protected override String ProcessWholeString( String str ) { return str; } protected override String ProcessSingleString( String str ) { return str; } } [System.Runtime.InteropServices.ComVisible(true)] [Serializable()] sealed public class EnvironmentPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission { private StringExpressionSet m_read; private StringExpressionSet m_write; private bool m_unrestricted; public EnvironmentPermission(PermissionState state) { if (state == PermissionState.Unrestricted) m_unrestricted = true; else if (state == PermissionState.None) m_unrestricted = false; else throw new ArgumentException(Environment.GetResourceString("Argument_InvalidPermissionState")); } public EnvironmentPermission( EnvironmentPermissionAccess flag, String pathList ) { SetPathList( flag, pathList ); } public void SetPathList( EnvironmentPermissionAccess flag, String pathList ) { VerifyFlag( flag ); m_unrestricted = false; if ((flag & EnvironmentPermissionAccess.Read) != 0) m_read = null; if ((flag & EnvironmentPermissionAccess.Write) != 0) m_write = null; AddPathList( flag, pathList ); } public void AddPathList( EnvironmentPermissionAccess flag, String pathList ) { VerifyFlag( flag ); if (FlagIsSet( flag, EnvironmentPermissionAccess.Read )) { if (m_read == null) m_read = new EnvironmentStringExpressionSet(); m_read.AddExpressions( pathList ); } if (FlagIsSet( flag, EnvironmentPermissionAccess.Write )) { if (m_write == null) m_write = new EnvironmentStringExpressionSet(); m_write.AddExpressions( pathList ); } } public String GetPathList( EnvironmentPermissionAccess flag ) { VerifyFlag( flag ); ExclusiveFlag( flag ); if (FlagIsSet( flag, EnvironmentPermissionAccess.Read )) { if (m_read == null) { return ""; } return m_read.ToString(); } if (FlagIsSet( flag, EnvironmentPermissionAccess.Write )) { if (m_write == null) { return ""; } return m_write.ToString(); } /* not reached */ return ""; } private void VerifyFlag( EnvironmentPermissionAccess flag ) { if ((flag & ~EnvironmentPermissionAccess.AllAccess) != 0) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Arg_EnumIllegalVal"), (int)flag)); } private void ExclusiveFlag( EnvironmentPermissionAccess flag ) { if (flag == EnvironmentPermissionAccess.NoAccess) { throw new ArgumentException( Environment.GetResourceString("Arg_EnumNotSingleFlag") ); } if (((int)flag & ((int)flag-1)) != 0) { throw new ArgumentException( Environment.GetResourceString("Arg_EnumNotSingleFlag") ); } } private bool FlagIsSet( EnvironmentPermissionAccess flag, EnvironmentPermissionAccess question ) { return (flag & question) != 0; } private bool IsEmpty() { return (!m_unrestricted && (this.m_read == null || this.m_read.IsEmpty()) && (this.m_write == null || this.m_write.IsEmpty())); } //------------------------------------------------------ // // CODEACCESSPERMISSION IMPLEMENTATION // //----------------------------------------------------- public bool IsUnrestricted() { return m_unrestricted; } //----------------------------------------------------- // // IPERMISSION IMPLEMENTATION // //----------------------------------------------------- public override bool IsSubsetOf(IPermission target) { if (target == null) { return this.IsEmpty(); } try { EnvironmentPermission operand = (EnvironmentPermission)target; if (operand.IsUnrestricted()) return true; else if (this.IsUnrestricted()) return false; else return ((this.m_read == null || this.m_read.IsSubsetOf( operand.m_read )) && (this.m_write == null || this.m_write.IsSubsetOf( operand.m_write ))); } catch (InvalidCastException) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName) ); } } public override IPermission Intersect(IPermission target) { if (target == null) { return null; } else if (!VerifyType(target)) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName) ); } else if (this.IsUnrestricted()) { return target.Copy(); } EnvironmentPermission operand = (EnvironmentPermission)target; if (operand.IsUnrestricted()) { return this.Copy(); } StringExpressionSet intersectRead = this.m_read == null ? null : this.m_read.Intersect( operand.m_read ); StringExpressionSet intersectWrite = this.m_write == null ? null : this.m_write.Intersect( operand.m_write ); if ((intersectRead == null || intersectRead.IsEmpty()) && (intersectWrite == null || intersectWrite.IsEmpty())) { return null; } EnvironmentPermission intersectPermission = new EnvironmentPermission(PermissionState.None); intersectPermission.m_unrestricted = false; intersectPermission.m_read = intersectRead; intersectPermission.m_write = intersectWrite; return intersectPermission; } public override IPermission Union(IPermission other) { if (other == null) { return this.Copy(); } else if (!VerifyType(other)) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName) ); } EnvironmentPermission operand = (EnvironmentPermission)other; if (this.IsUnrestricted() || operand.IsUnrestricted()) { return new EnvironmentPermission( PermissionState.Unrestricted ); } StringExpressionSet unionRead = this.m_read == null ? operand.m_read : this.m_read.Union( operand.m_read ); StringExpressionSet unionWrite = this.m_write == null ? operand.m_write : this.m_write.Union( operand.m_write ); if ((unionRead == null || unionRead.IsEmpty()) && (unionWrite == null || unionWrite.IsEmpty())) { return null; } EnvironmentPermission unionPermission = new EnvironmentPermission(PermissionState.None); unionPermission.m_unrestricted = false; unionPermission.m_read = unionRead; unionPermission.m_write = unionWrite; return unionPermission; } public override IPermission Copy() { EnvironmentPermission copy = new EnvironmentPermission(PermissionState.None); if (this.m_unrestricted) { copy.m_unrestricted = true; } else { copy.m_unrestricted = false; if (this.m_read != null) { copy.m_read = this.m_read.Copy(); } if (this.m_write != null) { copy.m_write = this.m_write.Copy(); } } return copy; } public override SecurityElement ToXml() { SecurityElement esd = CodeAccessPermission.CreatePermissionElement( this, "System.Security.Permissions.EnvironmentPermission" ); if (!IsUnrestricted()) { if (this.m_read != null && !this.m_read.IsEmpty()) { esd.AddAttribute( "Read", SecurityElement.Escape( m_read.ToString() ) ); } if (this.m_write != null && !this.m_write.IsEmpty()) { esd.AddAttribute( "Write", SecurityElement.Escape( m_write.ToString() ) ); } } else { esd.AddAttribute( "Unrestricted", "true" ); } return esd; } public override void FromXml(SecurityElement esd) { CodeAccessPermission.ValidateElement( esd, this ); String et; if (XMLUtil.IsUnrestricted(esd)) { m_unrestricted = true; return; } m_unrestricted = false; m_read = null; m_write = null; et = esd.Attribute( "Read" ); if (et != null) { m_read = new EnvironmentStringExpressionSet( et ); } et = esd.Attribute( "Write" ); if (et != null) { m_write = new EnvironmentStringExpressionSet( et ); } } /// int IBuiltInPermission.GetTokenIndex() { return EnvironmentPermission.GetTokenIndex(); } internal static int GetTokenIndex() { return BuiltInPermissionIndex.EnvironmentPermissionIndex; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DropSource.cs
- BooleanStorage.cs
- Rules.cs
- UndoManager.cs
- WebControlToolBoxItem.cs
- Control.cs
- EventLogException.cs
- GatewayDefinition.cs
- NullableIntAverageAggregationOperator.cs
- BinaryKeyIdentifierClause.cs
- DataViewSetting.cs
- AdRotator.cs
- AddDataControlFieldDialog.cs
- SmtpClient.cs
- JsonUriDataContract.cs
- FormViewDesigner.cs
- CmsUtils.cs
- SQLInt32Storage.cs
- ScriptingAuthenticationServiceSection.cs
- SmiContextFactory.cs
- SafeFileMappingHandle.cs
- PtsCache.cs
- BaseTemplateBuildProvider.cs
- CustomLineCap.cs
- X509Utils.cs
- DataSourceCache.cs
- CodeConstructor.cs
- DataBindingCollection.cs
- CreateDataSourceDialog.cs
- FusionWrap.cs
- ToolboxItemFilterAttribute.cs
- SplitterEvent.cs
- FormatConvertedBitmap.cs
- ListSourceHelper.cs
- GradientBrush.cs
- CapiSafeHandles.cs
- Rect3D.cs
- RequestCachePolicyConverter.cs
- ServerTooBusyException.cs
- GridErrorDlg.cs
- TreeNode.cs
- ReflectionServiceProvider.cs
- PrintingPermissionAttribute.cs
- XmlSchemaCompilationSettings.cs
- ObjectViewEntityCollectionData.cs
- ExecutionEngineException.cs
- InternalCache.cs
- XamlBrushSerializer.cs
- MonthCalendar.cs
- ConsumerConnectionPoint.cs
- EntityDataSourceDataSelectionPanel.cs
- DataSourceCacheDurationConverter.cs
- ToolStripPanelRow.cs
- ToolStripItemBehavior.cs
- KeyValuePair.cs
- TemplateBindingExtensionConverter.cs
- TableLayoutPanelCodeDomSerializer.cs
- BindingExpressionUncommonField.cs
- ServicePointManager.cs
- MetadataArtifactLoaderXmlReaderWrapper.cs
- SqlPersistenceWorkflowInstanceDescription.cs
- SweepDirectionValidation.cs
- SectionInput.cs
- Literal.cs
- ProvidersHelper.cs
- SoapIgnoreAttribute.cs
- XsltContext.cs
- HeaderCollection.cs
- StringWriter.cs
- SystemWebCachingSectionGroup.cs
- KeyNotFoundException.cs
- ObjectViewFactory.cs
- TemplateBamlRecordReader.cs
- SqlFlattener.cs
- DataColumnSelectionConverter.cs
- AutoSizeToolBoxItem.cs
- AbstractSvcMapFileLoader.cs
- CheckoutException.cs
- ProcessInfo.cs
- Stackframe.cs
- ObjectNavigationPropertyMapping.cs
- SvcMapFile.cs
- TextSimpleMarkerProperties.cs
- NamespaceCollection.cs
- ObjectToken.cs
- RtfFormatStack.cs
- HScrollBar.cs
- Hashtable.cs
- DataGridViewTextBoxEditingControl.cs
- SystemThemeKey.cs
- PersonalizationProviderCollection.cs
- TransformerTypeCollection.cs
- Helper.cs
- IsolatedStorageFilePermission.cs
- ClientSettings.cs
- FirstMatchCodeGroup.cs
- IndexerReference.cs
- Matrix.cs
- OdbcHandle.cs
- MsmqSecureHashAlgorithm.cs