/// <summary>Resolves matching code groups.</summary>
/// <param name="evidence">The evidence for the assembly. </param>
/// <returns>The complete set of code groups that were matched by the evidence.</returns>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="evidence" /> parameter is <see langword="null" />. </exception>
// Token: 0x06002A5B RID: 10843 RVA: 0x0009D938 File Offset: 0x0009BB38
public override CodeGroup ResolveMatchingCodeGroups(Evidence evidence)
{
if (evidence == null)
{
throw new ArgumentNullException("evidence");
}
if (base.MembershipCondition.Check(evidence))
{
CodeGroup codeGroup = this.Copy();
codeGroup.Children = new ArrayList();
foreach (object obj in base.Children)
{
CodeGroup codeGroup2 = ((CodeGroup)obj).ResolveMatchingCodeGroups(evidence);
if (codeGroup2 != null)
{
codeGroup.AddChild(codeGroup2);
}
}
return(codeGroup);
}
return(null);
}
// Resolve code groups that match specific evidence.
public override CodeGroup ResolveMatchingCodeGroups(Evidence evidence)
{
if (evidence == null)
{
throw new ArgumentNullException("evidence");
}
if (!MembershipCondition.Check(evidence))
{
return(null);
}
CodeGroup groups = Copy();
CodeGroup childGroup;
foreach (CodeGroup group in Children)
{
childGroup = group.ResolveMatchingCodeGroups(evidence);
if (childGroup != null)
{
groups.AddChild(childGroup);
}
}
return(groups);
}
/// <summary>解析匹配的代码组。</summary>
/// <returns>证据匹配的完整代码组集。</returns>
/// <param name="evidence">程序集的证据。</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="evidence" /> 参数为 null。</exception>
public override CodeGroup ResolveMatchingCodeGroups(Evidence evidence)
{
if (evidence == null)
{
throw new ArgumentNullException("evidence");
}
if (!this.MembershipCondition.Check(evidence))
{
return((CodeGroup)null);
}
CodeGroup codeGroup = this.Copy();
codeGroup.Children = (IList) new ArrayList();
foreach (CodeGroup child in (IEnumerable)this.Children)
{
CodeGroup group = child.ResolveMatchingCodeGroups(evidence);
if (group != null)
{
codeGroup.AddChild(group);
}
}
return(codeGroup);
}
public override CodeGroup ResolveMatchingCodeGroups(Evidence evidence)
{
if (evidence == null)
{
throw new ArgumentNullException("evidence");
}
Contract.EndContractBlock();
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);
}
}
// Hardcode defaults in case
// (a) the specified policy file doesn't exists; and
// (b) no corresponding default policy file exists
internal void CreateDefaultLevel (PolicyLevelType type)
{
PolicyStatement psu = new PolicyStatement (DefaultPolicies.FullTrust);
switch (type) {
case PolicyLevelType.Machine:
// by default all stuff is in the machine policy...
PolicyStatement psn = new PolicyStatement (DefaultPolicies.Nothing);
root_code_group = new UnionCodeGroup (new AllMembershipCondition (), psn);
root_code_group.Name = "All_Code";
UnionCodeGroup myComputerZone = new UnionCodeGroup (new ZoneMembershipCondition (SecurityZone.MyComputer), psu);
myComputerZone.Name = "My_Computer_Zone";
// TODO: strongname code group for ECMA and MS keys
root_code_group.AddChild (myComputerZone);
UnionCodeGroup localIntranetZone = new UnionCodeGroup (new ZoneMembershipCondition (SecurityZone.Intranet),
new PolicyStatement (DefaultPolicies.LocalIntranet));
localIntranetZone.Name = "LocalIntranet_Zone";
// TODO: same site / same directory
root_code_group.AddChild (localIntranetZone);
PolicyStatement psi = new PolicyStatement (DefaultPolicies.Internet);
UnionCodeGroup internetZone = new UnionCodeGroup (new ZoneMembershipCondition (SecurityZone.Internet), psi);
internetZone.Name = "Internet_Zone";
// TODO: same site
root_code_group.AddChild (internetZone);
UnionCodeGroup restrictedZone = new UnionCodeGroup (new ZoneMembershipCondition (SecurityZone.Untrusted), psn);
restrictedZone.Name = "Restricted_Zone";
root_code_group.AddChild (restrictedZone);
UnionCodeGroup trustedZone = new UnionCodeGroup (new ZoneMembershipCondition (SecurityZone.Trusted), psi);
trustedZone.Name = "Trusted_Zone";
// TODO: same site
root_code_group.AddChild (trustedZone);
break;
case PolicyLevelType.User:
case PolicyLevelType.Enterprise:
case PolicyLevelType.AppDomain:
// while the other policies don't restrict anything
root_code_group = new UnionCodeGroup (new AllMembershipCondition (), psu);
root_code_group.Name = "All_Code";
break;
}
}
static void MakePluginCodeGroup(PolicyLevel level, CodeGroup root, String url)
{
// Create a membership condition for our path
IMembershipCondition membership =
new UrlMembershipCondition(url);
// Get the internet permissiion set
PermissionSet permissions =
level.GetNamedPermissionSet("Internet");
permissions.GetType(); // Again, no nulls allowed
// Create a policy statement from the permissions and condition
PolicyStatement statement = new PolicyStatement(permissions,
PolicyStatementAttribute.Exclusive |
PolicyStatementAttribute.LevelFinal);
// New code group
UnionCodeGroup group = new UnionCodeGroup(membership, statement);
group.Description=String.Format(
"Code group that restricts permissions on "+
"assemblies in {0}, to support secure loading of plugins. "+
"This group was added by application: {1}", url,
Assembly.GetEntryAssembly().CodeBase);
group.Name = GenerateCodeGroupName(url);
root.AddChild(group);
SecurityManager.SavePolicyLevel(level);
}