private static RuntimeModule GetDynamicMethodsModule()
{
if (s_anonymouslyHostedDynamicMethodsModule == null)
{
lock (s_anonymouslyHostedDynamicMethodsModuleLock)
{
if (s_anonymouslyHostedDynamicMethodsModule != null)
{
return(s_anonymouslyHostedDynamicMethodsModule);
}
CustomAttributeBuilder builder = new CustomAttributeBuilder(typeof(SecurityTransparentAttribute).GetConstructor(Type.EmptyTypes), new object[0]);
List <CustomAttributeBuilder> unsafeAssemblyAttributes = new List <CustomAttributeBuilder> {
builder
};
CustomAttributeBuilder item = new CustomAttributeBuilder(typeof(SecurityRulesAttribute).GetConstructor(new Type[] { typeof(SecurityRuleSet) }), new object[] { SecurityRuleSet.Level1 });
unsafeAssemblyAttributes.Add(item);
AssemblyName name = new AssemblyName("Anonymously Hosted DynamicMethods Assembly");
StackCrawlMark lookForMe = StackCrawlMark.LookForMe;
AssemblyBuilder builder3 = AssemblyBuilder.InternalDefineDynamicAssembly(name, AssemblyBuilderAccess.Run, null, null, null, null, null, ref lookForMe, unsafeAssemblyAttributes, SecurityContextSource.CurrentAssembly);
AppDomain.PublishAnonymouslyHostedDynamicMethodsAssembly(builder3.GetNativeHandle());
s_anonymouslyHostedDynamicMethodsModule = (InternalModuleBuilder)builder3.ManifestModule;
}
}
return(s_anonymouslyHostedDynamicMethodsModule);
}
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
private static RuntimeModule GetDynamicMethodsModule()
{
if (s_anonymouslyHostedDynamicMethodsModule != null)
return s_anonymouslyHostedDynamicMethodsModule;
lock (s_anonymouslyHostedDynamicMethodsModuleLock)
{
if (s_anonymouslyHostedDynamicMethodsModule != null)
return s_anonymouslyHostedDynamicMethodsModule;
ConstructorInfo transparencyCtor = typeof(SecurityTransparentAttribute).GetConstructor(Type.EmptyTypes);
CustomAttributeBuilder transparencyAttribute = new CustomAttributeBuilder(transparencyCtor, Array.Empty<Object>());
List<CustomAttributeBuilder> assemblyAttributes = new List<CustomAttributeBuilder>();
assemblyAttributes.Add(transparencyAttribute);
AssemblyName assemblyName = new AssemblyName("Anonymously Hosted DynamicMethods Assembly");
StackCrawlMark stackMark = StackCrawlMark.LookForMe;
AssemblyBuilder assembly = AssemblyBuilder.InternalDefineDynamicAssembly(
assemblyName,
AssemblyBuilderAccess.Run,
ref stackMark,
assemblyAttributes);
AppDomain.PublishAnonymouslyHostedDynamicMethodsAssembly(assembly.GetNativeHandle());
// this always gets the internal module.
s_anonymouslyHostedDynamicMethodsModule = (InternalModuleBuilder)assembly.ManifestModule;
}
return s_anonymouslyHostedDynamicMethodsModule;
}
[MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
private static RuntimeModule GetDynamicMethodsModule()
{
if (s_anonymouslyHostedDynamicMethodsModule != null)
{
return(s_anonymouslyHostedDynamicMethodsModule);
}
lock (s_anonymouslyHostedDynamicMethodsModuleLock)
{
if (s_anonymouslyHostedDynamicMethodsModule != null)
{
return(s_anonymouslyHostedDynamicMethodsModule);
}
ConstructorInfo transparencyCtor = typeof(SecurityTransparentAttribute).GetConstructor(Type.EmptyTypes);
CustomAttributeBuilder transparencyAttribute = new CustomAttributeBuilder(transparencyCtor, EmptyArray <Object> .Value);
List <CustomAttributeBuilder> assemblyAttributes = new List <CustomAttributeBuilder>();
assemblyAttributes.Add(transparencyAttribute);
#if !FEATURE_CORECLR
// On the desktop, we need to use the security rule set level 1 for anonymously hosted
// dynamic methods. In level 2, transparency rules are strictly enforced, which leads to
// errors when a fully trusted application causes a dynamic method to be generated that tries
// to call a method with a LinkDemand or a SecurityCritical method. To retain compatibility
// with the v2.0 and v3.x frameworks, these calls should be allowed.
//
// If this rule set was not explicitly called out, then the anonymously hosted dynamic methods
// assembly would inherit the rule set from the creating assembly - which would cause it to
// be level 2 because mscorlib.dll is using the level 2 rules.
ConstructorInfo securityRulesCtor = typeof(SecurityRulesAttribute).GetConstructor(new Type[] { typeof(SecurityRuleSet) });
CustomAttributeBuilder securityRulesAttribute =
new CustomAttributeBuilder(securityRulesCtor, new object[] { SecurityRuleSet.Level1 });
assemblyAttributes.Add(securityRulesAttribute);
#endif // !FEATURE_CORECLR
AssemblyName assemblyName = new AssemblyName("Anonymously Hosted DynamicMethods Assembly");
StackCrawlMark stackMark = StackCrawlMark.LookForMe;
AssemblyBuilder assembly = AssemblyBuilder.InternalDefineDynamicAssembly(
assemblyName,
AssemblyBuilderAccess.Run,
null, null, null, null, null,
ref stackMark,
assemblyAttributes,
SecurityContextSource.CurrentAssembly);
AppDomain.PublishAnonymouslyHostedDynamicMethodsAssembly(assembly.GetNativeHandle());
// this always gets the internal module.
s_anonymouslyHostedDynamicMethodsModule = (InternalModuleBuilder)assembly.ManifestModule;
}
return(s_anonymouslyHostedDynamicMethodsModule);
}