Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / Security / Policy / FirstMatchCodeGroup.cs / 1 / FirstMatchCodeGroup.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // FirstMatchCodeGroup.cs // // Representation for code groups used for the policy mechanism // namespace System.Security.Policy { using System; using System.Security; using System.Security.Util; using System.Collections; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] sealed public class FirstMatchCodeGroup : CodeGroup { internal FirstMatchCodeGroup() : base() { } public FirstMatchCodeGroup( IMembershipCondition membershipCondition, PolicyStatement policy ) : base( membershipCondition, policy ) { } public override PolicyStatement Resolve( Evidence evidence ) { if (evidence == null) throw new ArgumentNullException("evidence"); object usedEvidence = null; if (PolicyManager.CheckMembershipCondition(MembershipCondition, evidence, out usedEvidence)) { PolicyStatement childPolicy = null; IEnumerator enumerator = this.Children.GetEnumerator(); while (enumerator.MoveNext()) { childPolicy = PolicyManager.ResolveCodeGroup(enumerator.Current as CodeGroup, evidence); // If the child has a policy, we are done. if (childPolicy != null) { break; } } // If any delay-evidence was used to generate this grant set, then we need to keep track of // that for potentially later forcing it to be verified. IDelayEvaluatedEvidence delayEvidence = usedEvidence as IDelayEvaluatedEvidence; bool delayEvidenceNeedsVerification = delayEvidence != null && !delayEvidence.IsVerified; PolicyStatement thisPolicy = this.PolicyStatement; // PolicyStatement getter makes a copy for us if (thisPolicy == null) { // We didn't add any permissions, but we enabled our children to be evaluated, and // therefore its grant set is dependent on any of our delay evidence. if (delayEvidenceNeedsVerification) { childPolicy = childPolicy.Copy(); childPolicy.AddDependentEvidence(delayEvidence); } return childPolicy; } else if (childPolicy != null) { // Combine the child and this policy and return it. PolicyStatement combined = thisPolicy.Copy(); if (delayEvidenceNeedsVerification) { combined.AddDependentEvidence(delayEvidence); } combined.InplaceUnion(childPolicy); return combined; } else { // Otherwise we just copy the this policy. if (delayEvidenceNeedsVerification) { thisPolicy.AddDependentEvidence(delayEvidence); } return thisPolicy; } } else { return null; } } public override CodeGroup ResolveMatchingCodeGroups( Evidence evidence ) { if (evidence == null) throw new ArgumentNullException("evidence"); if (this.MembershipCondition.Check( evidence )) { CodeGroup retGroup = this.Copy(); retGroup.Children = new ArrayList(); IEnumerator enumerator = this.Children.GetEnumerator(); while (enumerator.MoveNext()) { CodeGroup matchingGroups = ((CodeGroup)enumerator.Current).ResolveMatchingCodeGroups( evidence ); // If the child has a policy, we are done. if (matchingGroups != null) { retGroup.AddChild( matchingGroups ); break; } } return retGroup; } else { return null; } } public override CodeGroup Copy() { FirstMatchCodeGroup group = new FirstMatchCodeGroup(); group.MembershipCondition = this.MembershipCondition; group.PolicyStatement = this.PolicyStatement; group.Name = this.Name; group.Description = this.Description; IEnumerator enumerator = this.Children.GetEnumerator(); while (enumerator.MoveNext()) { group.AddChild( (CodeGroup)enumerator.Current ); } return group; } public override String MergeLogic { get { return Environment.GetResourceString( "MergeLogic_FirstMatch" ); } } internal override String GetTypeName() { return "System.Security.Policy.FirstMatchCodeGroup"; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // FirstMatchCodeGroup.cs // // Representation for code groups used for the policy mechanism // namespace System.Security.Policy { using System; using System.Security; using System.Security.Util; using System.Collections; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] sealed public class FirstMatchCodeGroup : CodeGroup { internal FirstMatchCodeGroup() : base() { } public FirstMatchCodeGroup( IMembershipCondition membershipCondition, PolicyStatement policy ) : base( membershipCondition, policy ) { } public override PolicyStatement Resolve( Evidence evidence ) { if (evidence == null) throw new ArgumentNullException("evidence"); object usedEvidence = null; if (PolicyManager.CheckMembershipCondition(MembershipCondition, evidence, out usedEvidence)) { PolicyStatement childPolicy = null; IEnumerator enumerator = this.Children.GetEnumerator(); while (enumerator.MoveNext()) { childPolicy = PolicyManager.ResolveCodeGroup(enumerator.Current as CodeGroup, evidence); // If the child has a policy, we are done. if (childPolicy != null) { break; } } // If any delay-evidence was used to generate this grant set, then we need to keep track of // that for potentially later forcing it to be verified. IDelayEvaluatedEvidence delayEvidence = usedEvidence as IDelayEvaluatedEvidence; bool delayEvidenceNeedsVerification = delayEvidence != null && !delayEvidence.IsVerified; PolicyStatement thisPolicy = this.PolicyStatement; // PolicyStatement getter makes a copy for us if (thisPolicy == null) { // We didn't add any permissions, but we enabled our children to be evaluated, and // therefore its grant set is dependent on any of our delay evidence. if (delayEvidenceNeedsVerification) { childPolicy = childPolicy.Copy(); childPolicy.AddDependentEvidence(delayEvidence); } return childPolicy; } else if (childPolicy != null) { // Combine the child and this policy and return it. PolicyStatement combined = thisPolicy.Copy(); if (delayEvidenceNeedsVerification) { combined.AddDependentEvidence(delayEvidence); } combined.InplaceUnion(childPolicy); return combined; } else { // Otherwise we just copy the this policy. if (delayEvidenceNeedsVerification) { thisPolicy.AddDependentEvidence(delayEvidence); } return thisPolicy; } } else { return null; } } public override CodeGroup ResolveMatchingCodeGroups( Evidence evidence ) { if (evidence == null) throw new ArgumentNullException("evidence"); if (this.MembershipCondition.Check( evidence )) { CodeGroup retGroup = this.Copy(); retGroup.Children = new ArrayList(); IEnumerator enumerator = this.Children.GetEnumerator(); while (enumerator.MoveNext()) { CodeGroup matchingGroups = ((CodeGroup)enumerator.Current).ResolveMatchingCodeGroups( evidence ); // If the child has a policy, we are done. if (matchingGroups != null) { retGroup.AddChild( matchingGroups ); break; } } return retGroup; } else { return null; } } public override CodeGroup Copy() { FirstMatchCodeGroup group = new FirstMatchCodeGroup(); group.MembershipCondition = this.MembershipCondition; group.PolicyStatement = this.PolicyStatement; group.Name = this.Name; group.Description = this.Description; IEnumerator enumerator = this.Children.GetEnumerator(); while (enumerator.MoveNext()) { group.AddChild( (CodeGroup)enumerator.Current ); } return group; } public override String MergeLogic { get { return Environment.GetResourceString( "MergeLogic_FirstMatch" ); } } internal override String GetTypeName() { return "System.Security.Policy.FirstMatchCodeGroup"; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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