// Imagine a generic AddInBase (AB<T>), and an AddInAdapter with a
// constructor taking in AB<Int32>. If we have IntAddIn : AB<Int32>,
// then we should be able to hook this up.
internal bool CanConnectTo(AddInBase addInBase)
{
System.Diagnostics.Contracts.Contract.Requires(addInBase != null);
if (!addInBase.TypeInfo.IsGeneric)
{
if (this.Constructors.Contains(addInBase.TypeInfo))
{
return(true);
}
// return true if we have a constructor that accepts one of addinBase's ActivatableAs base classes
if (addInBase._activatableAs != null)
{
foreach (TypeInfo activatableAsTypeInfo in addInBase._activatableAs)
{
if (this.Constructors.Contains(activatableAsTypeInfo))
{
return(true);
}
}
}
}
else
{
return(false);
}
return(false);
}
internal InspectionResults Inspect(PipelineComponentType componentType, string assemblyFileName, string pipelineRootDirectory)
{
System.Diagnostics.Contracts.Contract.Requires(assemblyFileName != null);
System.Diagnostics.Contracts.Contract.Requires(pipelineRootDirectory != null);
_assemblyFileName = assemblyFileName;
_pipelineRootDirectory = pipelineRootDirectory;
// Set up the assembly resolve event.
_currentComponentType = componentType;
ResolveEventHandler assemblyResolver = new ResolveEventHandler(ResolveAssembly);
AppDomain.CurrentDomain.ReflectionOnlyAssemblyResolve += assemblyResolver;
InspectionResults retval = new InspectionResults();
retval.Components = new List<PipelineComponent>();
retval.Warnings = new Collection<String>();
Type[] publicTypes;
String assemblyName = null;
// Need to assert again here because we are in a new appdomain
FileIOPermission permission = new FileIOPermission(FileIOPermissionAccess.PathDiscovery |
FileIOPermissionAccess.Read, _pipelineRootDirectory);
permission.Assert();
try
{
// We want to load the assembly WITHOUT REGARD OF PUBLISHER POLICY.
// If the directory structure contains v1.0 of a component and v1.1
// exists in the GAC and is a security fix to v1.0, we still want to
// inspect v1.0. (The reason is we have other parts of the
// pipeline that were likely compiled against v1.0, not v1.1, and
// we do type comparisons by comparing the fully qualified assembly
// name.) LoadFrom unfortunately respects policy. Assembly's
// ReflectionOnlyLoad(byte[]) doesn't. ReflectionOnlyLoadFrom(String)
// does respect policy if you've set DEVPATH, but only as a bug.
// We don't think setting DEVPATH is interesting.
Assembly a = Assembly.ReflectionOnlyLoadFrom(_assemblyFileName);
publicTypes = a.GetTypes();
assemblyName = a.FullName;
}
catch (FileNotFoundException fnf)
{
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.AssemblyLoadFileNotFound, fnf.Message, fnf.FileName));
return retval;
}
catch (Exception e)
{
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.AssemblyLoadThrew, e.GetType().Name, e.Message, _assemblyFileName));
return retval;
}
PipelineComponent component = null;
String relativeFileName = Utils.MakeRelativePath(_assemblyFileName, _pipelineRootDirectory);
Type lastType = null;
try
{
// Iterate over public types, looking for the appropriate custom attributes.
foreach (Type type in publicTypes)
{
component = null;
lastType = type;
switch (componentType)
{
case PipelineComponentType.Contract:
if (!Utils.HasCustomAttribute(PipelineComponent.ContractAttributeInReflectionLoaderContext, type))
continue;
component = new ContractComponent(new TypeInfo(type), relativeFileName);
break;
case PipelineComponentType.AddInAdapter:
if (!Utils.HasCustomAttribute(PipelineComponent.AddInAdapterAttributeInReflectionLoaderContext, type))
continue;
component = new AddInAdapter(new TypeInfo(type), relativeFileName);
break;
case PipelineComponentType.AddInBase:
if (Utils.HasCustomAttribute(PipelineComponent.AddInAttributeInReflectionLoaderContext, type))
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.AddInInAddInViewFolder, type.Name, _assemblyFileName));
if (!Utils.HasCustomAttribute(PipelineComponent.AddInBaseAttributeInReflectionLoaderContext, type))
continue;
TypeInfo[] activatableAs = null;
CustomAttributeData cad = Utils.GetCustomAttributeData(PipelineComponent.AddInBaseAttributeInReflectionLoaderContext, type);
foreach(CustomAttributeNamedArgument cana in cad.NamedArguments)
{
if (cana.MemberInfo.Name == "ActivatableAs")
{
CustomAttributeTypedArgument arg = cana.TypedValue;
ReadOnlyCollection<CustomAttributeTypedArgument> types = (ReadOnlyCollection<CustomAttributeTypedArgument>)arg.Value;
activatableAs = new TypeInfo[types.Count];
int i = 0;
foreach (CustomAttributeTypedArgument subArg in types)
{
activatableAs[i++] = new TypeInfo((Type)subArg.Value);
}
}
}
component = new AddInBase(new TypeInfo(type), activatableAs, relativeFileName, assemblyName);
break;
default:
System.Diagnostics.Contracts.Contract.Assert(false, "Fell through switch - unrecognized componentType in InspectionWorker.Inspect");
break;
} // switch
// If we found a component, make sure it satisfies all of its constraints, and give our
// PipelineComponents a chance to initialize state.
if (component != null)
{
if (component.Validate(type, retval.Warnings))
retval.Components.Add(component);
}
} // foreach type in the assembly
} // try
catch (FileNotFoundException fnf)
{
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.AssemblyLoadFileNotFound, fnf.Message, fnf.FileName));
return retval;
}
catch (NotImplementedException)
{
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.NotImplementedFeatureBadCtorParamOrAssembly,
_assemblyFileName, (lastType == null) ? "" : lastType.FullName));
return retval;
}
catch (Exception e)
{
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.InspectingAssemblyThrew, e.GetType().Name, e.Message, _assemblyFileName));
return retval;
}
AppDomain.CurrentDomain.ReflectionOnlyAssemblyResolve -= assemblyResolver;
if (retval.Components.Count == 0 && _currentComponentType != PipelineComponentType.AddIn && _currentComponentType != PipelineComponentType.AddInBase)
{
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, Res.NoAddInModelPartsFound, componentType, _assemblyFileName));
}
#if ADDIN_VERBOSE_WARNINGS
foreach (PipelineComponent c in retval.Components)
retval.Warnings.Add(String.Format(CultureInfo.CurrentCulture, "Found a {0}. Name: {1} Assembly: {2}", componentType, c.SimpleName, c.AssemblySimpleName));
#endif
return retval;
}
// Imagine a generic AddInBase (AB<T>), and an AddInAdapter with a
// constructor taking in AB<Int32>. If we have IntAddIn : AB<Int32>,
// then we should be able to hook this up.
internal bool CanConnectTo(AddInBase addInBase)
{
System.Diagnostics.Contracts.Contract.Requires(addInBase != null);
if (!addInBase.TypeInfo.IsGeneric)
{
if (this.Constructors.Contains(addInBase.TypeInfo))
return true;
// return true if we have a constructor that accepts one of addinBase's ActivatableAs base classes
if (addInBase._activatableAs != null)
{
foreach (TypeInfo activatableAsTypeInfo in addInBase._activatableAs)
{
if (this.Constructors.Contains(activatableAsTypeInfo))
return true;
}
}
}
else
{
return false;
}
return false;
}
