private bool AnalyzeAssembly(string path, bool bundled = false, bool throwOnBadImage = true)
{
Logger.LogAs(this, LogLevel.Noisy, "Analyzing assembly {0}.", path);
if (assemblyFromAssemblyName.Values.Any(x => x.Path == path))
{
Logger.LogAs(this, LogLevel.Warning, "Assembly {0} was already analyzed.", path);
return(true);
}
AssemblyDefinition assembly;
try
{
assembly = (bundled)
? AssemblyHelper.GetBundledAssemblyByName(path)
: AssemblyDefinition.ReadAssembly(path);
}
catch (DirectoryNotFoundException)
{
Logger.LogAs(this, LogLevel.Warning, "Could not find file {0} to analyze.", path);
return(false);
}
catch (FileNotFoundException)
{
Logger.LogAs(this, LogLevel.Warning, "Could not find file {0} to analyze.", path);
return(false);
}
catch (BadImageFormatException)
{
var message = string.Format("File {0} could not be analyzed due to invalid format.", path);
if (throwOnBadImage)
{
throw new RecoverableException(message);
}
// we hush this log because it is issued in binary Windows packages - we look for DLL files, but we
// also bundle libgcc etc.
Logger.LogAs(this, LogLevel.Noisy, message);
return(false);
}
var assemblyName = assembly.FullName;
if (!assemblyFromAssemblyName.ContainsKey(assemblyName))
{
assemblyFromAssemblyName.Add(assemblyName, GetAssemblyDescription(assemblyName, path));
}
else
{
if (path == assemblyFromAssemblyName[assemblyName].Path)
{
return(true);
}
var description = assemblyFromAssemblyName[assemblyName];
Logger.LogAs(this, LogLevel.Warning, "Assembly {0} is hidden by one located in {1} (same simple name {2}).",
path, description.Path, assemblyName);
}
var types = new List <TypeDefinition>();
foreach (var module in assembly.Modules)
{
// we add the assembly's directory to the resolve directory - also all known directories
knownDirectories.Add(Path.GetDirectoryName(path));
var defaultAssemblyResolver = ((DefaultAssemblyResolver)module.AssemblyResolver);
foreach (var directory in knownDirectories)
{
defaultAssemblyResolver.AddSearchDirectory(directory);
}
types.AddRange(module.GetTypes());
}
var hidePluginsFromThisAssembly = false;
// It happens that `entryAssembly` is null, e.g., when running tests inside MD.
// In such case we don't care about hiding plugins, so we just skip this mechanism (as this is the simples solution to the NRE problem).
var entryAssembly = Assembly.GetEntryAssembly();
if (entryAssembly != null && IsReferenced(entryAssembly, assembly.FullName))
{
Logger.LogAs(this, LogLevel.Noisy, "Plugins from this assembly {0} will be hidden as it is explicitly referenced.", assembly.FullName);
hidePluginsFromThisAssembly = true;
}
foreach (var type in types)
{
if (type.Interfaces.Any(i => ResolveInner(i)?.GetFullNameOfMember() == typeof(IPeripheral).FullName))
{
Logger.LogAs(this, LogLevel.Noisy, "Peripheral type {0} found.", type.Resolve().GetFullNameOfMember());
foundPeripherals.Add(type);
}
if (type.CustomAttributes.Any(x => ResolveInner(x.AttributeType)?.GetFullNameOfMember() == typeof(PluginAttribute).FullName))
{
Logger.LogAs(this, LogLevel.Noisy, "Plugin type {0} found.", type.Resolve().GetFullNameOfMember());
try
{
foundPlugins.Add(new PluginDescriptor(type, hidePluginsFromThisAssembly));
}
catch (Exception e)
{
//This may happend due to, e.g., version parsing error. The plugin is ignored.
Logger.LogAs(this, LogLevel.Error, "Plugin type {0} loading error: {1}.", type.GetFullNameOfMember(), e.Message);
}
}
if (IsAutoLoadType(type))
{
var loadedType = GetTypeWithLazyLoad(type.GetFullNameOfMember(), assembly.FullName, path);
lock (autoLoadedTypeLocker)
{
autoLoadedTypes.Add(loadedType);
}
var autoLoadedType = autoLoadedTypeEvent;
if (autoLoadedType != null)
{
autoLoadedType(loadedType);
}
continue;
}
if (!TryExtractExtensionMethods(type, out var extractedMethods) && !IsInterestingType(type))
{
continue;
}
// type is interesting, we'll put it into our dictionaries
// after conflicts checking
var fullName = type.GetFullNameOfMember();
var newAssemblyDescription = GetAssemblyDescription(assembly.FullName, path);
Logger.LogAs(this, LogLevel.Noisy, "Type {0} added.", fullName);
if (assembliesFromTypeName.ContainsKey(fullName))
{
assembliesFromTypeName[fullName].Add(newAssemblyDescription);
continue;
}
if (assemblyFromTypeName.ContainsKey(fullName))
{
throw new InvalidOperationException("Tried to load assembly that has been already loaded. Aborting operation.");
}
assemblyFromTypeName.Add(fullName, newAssemblyDescription);
if (extractedMethods != null)
{
ProcessExtractedExtensionMethods(extractedMethods);
}
}
return(true);
}
