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using Autofac;
using PKISharp.WACS.Plugins.Base;
using PKISharp.WACS.Plugins.Interfaces;
using PKISharp.WACS.Services.Interfaces;
using PKISharp.WACS.Services.Serialization;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
namespace PKISharp.WACS.Services
{
public class PluginService
{
private readonly List<Type> _allTypes;
private readonly List<Type> _optionProviders;
private readonly List<Type> _targetOptionFactories;
private readonly List<Type> _validationOptionFactories;
private readonly List<Type> _csrOptionFactories;
private readonly List<Type> _storeOptionFactories;
private readonly List<Type> _installationOptionFactories;
private readonly List<Type> _target;
private readonly List<Type> _validation;
private readonly List<Type> _csr;
private readonly List<Type> _store;
private readonly List<Type> _installation;
private readonly ILogService _log;
public List<IArgumentsProvider> OptionProviders()
{
return _optionProviders.Select(x =>
{
var c = x.GetConstructor(new Type[] { });
return (IArgumentsProvider)c.Invoke(new object[] { });
}).ToList();
}
public List<ITargetPluginOptionsFactory> TargetPluginFactories(ILifetimeScope scope)
{
return GetFactories<ITargetPluginOptionsFactory>(_targetOptionFactories, scope);
}
public List<IValidationPluginOptionsFactory> ValidationPluginFactories(ILifetimeScope scope)
{
return GetFactories<IValidationPluginOptionsFactory>(_validationOptionFactories, scope);
}
public List<ICsrPluginOptionsFactory> CsrPluginOptionsFactories(ILifetimeScope scope)
{
return GetFactories<ICsrPluginOptionsFactory>(_csrOptionFactories, scope);
}
public List<IStorePluginOptionsFactory> StorePluginFactories(ILifetimeScope scope)
{
return GetFactories<IStorePluginOptionsFactory>(_storeOptionFactories, scope);
}
public List<IInstallationPluginOptionsFactory> InstallationPluginFactories(ILifetimeScope scope)
{
return GetFactories<IInstallationPluginOptionsFactory>(_installationOptionFactories, scope);
}
public ITargetPluginOptionsFactory TargetPluginFactory(ILifetimeScope scope, string name)
{
return GetByName<ITargetPluginOptionsFactory>(_targetOptionFactories, name, scope);
}
public IValidationPluginOptionsFactory ValidationPluginFactory(ILifetimeScope scope, string type, string name)
{
return _validationOptionFactories.
Select(scope.Resolve).
OfType<IValidationPluginOptionsFactory>().
FirstOrDefault(x => x.Match(name) && string.Equals(type, x.ChallengeType, StringComparison.InvariantCultureIgnoreCase));
}
public ICsrPluginOptionsFactory CsrPluginFactory(ILifetimeScope scope, string name)
{
return GetByName<ICsrPluginOptionsFactory>(_csrOptionFactories, name, scope);
}
public IStorePluginOptionsFactory StorePluginFactory(ILifetimeScope scope, string name)
{
return GetByName<IStorePluginOptionsFactory>(_storeOptionFactories, name, scope);
}
public IInstallationPluginOptionsFactory InstallationPluginFactory(ILifetimeScope scope, string name)
{
return GetByName<IInstallationPluginOptionsFactory>(_installationOptionFactories, name, scope);
}
public List<Type> PluginOptionTypes<T>() where T: PluginOptions
{
return GetResolvable<T>();
}
internal void Configure(ContainerBuilder builder)
{
_targetOptionFactories.ForEach(t => { builder.RegisterType(t).SingleInstance(); });
_validationOptionFactories.ForEach(t => { builder.RegisterType(t).SingleInstance(); });
_csrOptionFactories.ForEach(t => { builder.RegisterType(t).SingleInstance(); });
_storeOptionFactories.ForEach(t => { builder.RegisterType(t).SingleInstance(); });
_installationOptionFactories.ForEach(t => { builder.RegisterType(t).SingleInstance();});
_target.ForEach(ip => { builder.RegisterType(ip); });
_validation.ForEach(ip => { builder.RegisterType(ip); });
_csr.ForEach(ip => { builder.RegisterType(ip); });
_store.ForEach(ip => { builder.RegisterType(ip); });
_installation.ForEach(ip => { builder.RegisterType(ip); });
}
private List<T> GetFactories<T>(List<Type> source, ILifetimeScope scope) where T : IPluginOptionsFactory
{
return source.Select(scope.Resolve).OfType<T>().OrderBy(x => x.Order).ToList();
}
private T GetByName<T>(IEnumerable<Type> list, string name, ILifetimeScope scope) where T: IPluginOptionsFactory
{
return list.Select(scope.Resolve).OfType<T>().FirstOrDefault(x => x.Match(name));
}
public PluginService(ILogService logger)
{
_log = logger;
_allTypes = GetTypes();
_optionProviders = GetResolvable<IArgumentsProvider>();
_targetOptionFactories = GetResolvable<ITargetPluginOptionsFactory>();
_validationOptionFactories = GetResolvable<IValidationPluginOptionsFactory>();
_csrOptionFactories = GetResolvable<ICsrPluginOptionsFactory>();
_storeOptionFactories = GetResolvable<IStorePluginOptionsFactory>();
_installationOptionFactories = GetResolvable<IInstallationPluginOptionsFactory>(true);
_target = GetResolvable<ITargetPlugin>();
_validation = GetResolvable<IValidationPlugin>();
_csr = GetResolvable<ICsrPlugin>();
_store = GetResolvable<IStorePlugin>();
_installation = GetResolvable<IInstallationPlugin>();
}
private List<Type> GetTypes()
{
var scanned = new List<Assembly>();
var ret = new List<Type>();
foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
{
if (assembly.FullName.Contains("wacs"))
{
IEnumerable<Type> types = new List<Type>();
try
{
types = assembly.GetTypes();
}
catch (ReflectionTypeLoadException rex)
{
types = rex.Types;
foreach (var lex in rex.LoaderExceptions)
{
_log.Error(lex, "Error loading type from {assembly}", assembly.FullName);
}
}
catch (Exception ex)
{
_log.Error("Error loading types from assembly {assembly}: {@ex}", assembly.FullName, ex);
}
ret.AddRange(types);
}
scanned.Add(assembly);
}
// Try loading additional dlls in the current dir to attempt to find plugin types in them
var baseDir = AppDomain.CurrentDomain.BaseDirectory;
var allFiles = Directory.EnumerateFileSystemEntries(baseDir, "*.dll", SearchOption.AllDirectories);
foreach (var file in allFiles)
{
IEnumerable<Type> types = new List<Type>();
try
{
var name = AssemblyName.GetAssemblyName(file);
var assembly = Assembly.Load(name);
if (!scanned.Contains(assembly))
{
types = assembly.GetTypes();
}
}
catch (ReflectionTypeLoadException rex)
{
types = rex.Types;
foreach (var lex in rex.LoaderExceptions)
{
_log.Error(lex, "Error loading type from {assembly}", file);
}
}
catch (Exception ex)
{
_log.Error("Error loading types from assembly {assembly}: {@ex}", file, ex);
}
ret.AddRange(types);
}
return ret;
}
private List<Type> GetResolvable<T>(bool allowNull = false)
{
var ret = _allTypes.AsEnumerable();
ret = ret.Where(type => typeof(T) != type && typeof(T).IsAssignableFrom(type) && !type.IsAbstract);
ret = ret.Where(type => !typeof(IIgnore).IsAssignableFrom(type));
if (!allowNull)
{
ret = ret.Where(type => !typeof(INull).IsAssignableFrom(type));
}
return ret.ToList();
}
}
}
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