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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using System.Security.Policy;
using System.IO;
using System.Configuration.Assemblies;
using StackCrawlMark = System.Threading.StackCrawlMark;
using System.Runtime.Serialization;
using System.Diagnostics.Contracts;
using System.Runtime.Loader;
namespace System.Reflection
{
public abstract partial class Assembly : ICustomAttributeProvider, ISerializable
{
public static Assembly LoadFrom(String assemblyFile)
{
if (assemblyFile == null)
throw new ArgumentNullException(nameof(assemblyFile));
string fullPath = Path.GetFullPath(assemblyFile);
return AssemblyLoadContext.Default.LoadFromAssemblyPath(fullPath);
}
// Evidence is protected in Assembly.Load()
[Obsolete("This method is obsolete and will be removed in a future release of the .NET Framework. Please use an overload of LoadFrom which does not take an Evidence parameter. See http://go.microsoft.com/fwlink/?LinkID=155570 for more information.")]
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
internal static Assembly LoadFrom(String assemblyFile,
Evidence securityEvidence)
{
Contract.Ensures(Contract.Result<Assembly>() != null);
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return RuntimeAssembly.InternalLoadFrom(
assemblyFile,
securityEvidence,
null, // hashValue
AssemblyHashAlgorithm.None,
false,// forIntrospection);
ref stackMark);
}
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static Assembly LoadFrom(String assemblyFile,
byte[] hashValue,
AssemblyHashAlgorithm hashAlgorithm)
{
throw new NotSupportedException(SR.NotSupported_AssemblyLoadFromHash);
}
// Locate an assembly by the long form of the assembly name.
// eg. "Toolbox.dll, version=1.1.10.1220, locale=en, publickey=1234567890123456789012345678901234567890"
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static Assembly Load(String assemblyString)
{
Contract.Ensures(Contract.Result<Assembly>() != null);
Contract.Ensures(!Contract.Result<Assembly>().ReflectionOnly);
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return RuntimeAssembly.InternalLoad(assemblyString, null, ref stackMark, false /*forIntrospection*/);
}
// Returns type from the assembly while keeping compatibility with Assembly.Load(assemblyString).GetType(typeName) for managed types.
// Calls Type.GetType for WinRT types.
// Note: Type.GetType fails for assembly names that start with weird characters like '['. By calling it for managed types we would
// break AppCompat.
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
internal static Type GetType_Compat(String assemblyString, String typeName)
{
// Normally we would get the stackMark only in public APIs. This is internal API, but it is AppCompat replacement of public API
// call Assembly.Load(assemblyString).GetType(typeName), therefore we take the stackMark here as well, to be fully compatible with
// the call sequence.
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
RuntimeAssembly assembly;
AssemblyName assemblyName = RuntimeAssembly.CreateAssemblyName(
assemblyString,
false /*forIntrospection*/,
out assembly);
if (assembly == null)
{
if (assemblyName.ContentType == AssemblyContentType.WindowsRuntime)
{
return Type.GetType(typeName + ", " + assemblyString, true /*throwOnError*/, false /*ignoreCase*/);
}
assembly = RuntimeAssembly.InternalLoadAssemblyName(
assemblyName, null, null, ref stackMark,
true /*thrownOnFileNotFound*/, false /*forIntrospection*/);
}
return assembly.GetType(typeName, true /*throwOnError*/, false /*ignoreCase*/);
}
// Locate an assembly by its name. The name can be strong or
// weak. The assembly is loaded into the domain of the caller.
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static Assembly Load(AssemblyName assemblyRef)
{
Contract.Ensures(Contract.Result<Assembly>() != null);
Contract.Ensures(!Contract.Result<Assembly>().ReflectionOnly);
AssemblyName modifiedAssemblyRef = null;
if (assemblyRef != null && assemblyRef.CodeBase != null)
{
modifiedAssemblyRef = (AssemblyName)assemblyRef.Clone();
modifiedAssemblyRef.CodeBase = null;
}
else
{
modifiedAssemblyRef = assemblyRef;
}
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return RuntimeAssembly.InternalLoadAssemblyName(modifiedAssemblyRef, null, null, ref stackMark, true /*thrownOnFileNotFound*/, false /*forIntrospection*/);
}
// Locate an assembly by its name. The name can be strong or
// weak. The assembly is loaded into the domain of the caller.
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
internal static Assembly Load(AssemblyName assemblyRef, IntPtr ptrLoadContextBinder)
{
Contract.Ensures(Contract.Result<Assembly>() != null);
Contract.Ensures(!Contract.Result<Assembly>().ReflectionOnly);
AssemblyName modifiedAssemblyRef = null;
if (assemblyRef != null && assemblyRef.CodeBase != null)
{
modifiedAssemblyRef = (AssemblyName)assemblyRef.Clone();
modifiedAssemblyRef.CodeBase = null;
}
else
{
modifiedAssemblyRef = assemblyRef;
}
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return RuntimeAssembly.InternalLoadAssemblyName(modifiedAssemblyRef, null, null, ref stackMark, true /*thrownOnFileNotFound*/, false /*forIntrospection*/, ptrLoadContextBinder);
}
// Loads the assembly with a COFF based IMAGE containing
// an emitted assembly. The assembly is loaded into the domain
// of the caller. The second parameter is the raw bytes
// representing the symbol store that matches the assembly.
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static Assembly Load(byte[] rawAssembly,
byte[] rawSymbolStore)
{
Contract.Ensures(Contract.Result<Assembly>() != null);
Contract.Ensures(!Contract.Result<Assembly>().ReflectionOnly);
AppDomain.CheckLoadByteArraySupported();
if (rawAssembly == null)
throw new ArgumentNullException(nameof(rawAssembly));
AssemblyLoadContext alc = new IndividualAssemblyLoadContext();
MemoryStream assemblyStream = new MemoryStream(rawAssembly);
MemoryStream symbolStream = (rawSymbolStore != null) ? new MemoryStream(rawSymbolStore) : null;
return alc.LoadFromStream(assemblyStream, symbolStream);
}
private static Dictionary<string, Assembly> s_loadfile = new Dictionary<string, Assembly>();
public static Assembly LoadFile(String path)
{
Contract.Ensures(Contract.Result<Assembly>() != null);
Contract.Ensures(!Contract.Result<Assembly>().ReflectionOnly);
AppDomain.CheckLoadFileSupported();
Assembly result = null;
if (path == null)
throw new ArgumentNullException(nameof(path));
if (PathInternal.IsPartiallyQualified(path))
{
throw new ArgumentException(SR.Argument_AbsolutePathRequired, nameof(path));
}
string normalizedPath = Path.GetFullPath(path);
lock (s_loadfile)
{
if (s_loadfile.TryGetValue(normalizedPath, out result))
return result;
AssemblyLoadContext alc = new IndividualAssemblyLoadContext();
result = alc.LoadFromAssemblyPath(normalizedPath);
s_loadfile.Add(normalizedPath, result);
}
return result;
}
/*
* Get the assembly that the current code is running from.
*/
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static Assembly GetExecutingAssembly()
{
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return RuntimeAssembly.GetExecutingAssembly(ref stackMark);
}
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static Assembly GetCallingAssembly()
{
// LookForMyCallersCaller is not guarantee to return the correct stack frame
// because of inlining, tail calls, etc. As a result GetCallingAssembly is not
// ganranteed to return the correct result. We should document it as such.
StackCrawlMark stackMark = StackCrawlMark.LookForMyCallersCaller;
return RuntimeAssembly.GetExecutingAssembly(ref stackMark);
}
public static Assembly GetEntryAssembly()
{
AppDomainManager domainManager = AppDomain.CurrentDomain.DomainManager;
if (domainManager == null)
domainManager = new AppDomainManager();
return domainManager.EntryAssembly;
}
}
}
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