Type and Namespace Restrictions

Nodes checks new contract code against below whitelist and if there is a usage of any type that is not covered in the whitelist, or the method access or type name is denied in below whitelist, the deployment will fail.

Assembly Dependencies

Assembly	Trust
netstandard.dll	Partial
System.Runtime.dll	Partial
System.Runtime.Extensions.dll	Partial
System.Private.CoreLib.dll	Partial
System.ObjectModel.dll	Partial
System.Linq.dll	Full
System.Collections	Full
Google.Protobuf.dll	Full
AElf.Sdk.CSharp.dll	Full
AElf.Types.dll	Full
AElf.CSharp.Core.dll	Full
AElf.Cryptography.dll	Full

Types and Members Whitelist in System Namespace

Type	Member (Field / Method)	Allowed
Array	AsReadOnly	Allowed
Func<T>	ALL	Allowed
Func<T,T>	ALL	Allowed
Func<T,T,T>	ALL	Allowed
Nullable<T>	ALL	Allowed
Environment	CurrentManagedThreadId	Allowed
BitConverter	GetBytes	Allowed
NotImplementedException	ALL	Allowed
NotSupportedException	ALL	Allowed
ArgumentOutOfRangeException	ALL	Allowed
DateTime	Partially	Allowed
DateTime	Now, UtcNow, Today	Denied
Uri	TryCreate	Allowed
Uri	Scheme	Allowed
Uri	UriSchemeHttp	Allowed
Uri	UriSchemeHttps	Allowed
void	ALL	Allowed
object	ALL	Allowed
Type	ALL	Allowed
IDisposable	ALL	Allowed
Convert	ALL	Allowed
Math	ALL	Allowed
bool	ALL	Allowed
byte	ALL	Allowed
sbyte	ALL	Allowed
char	ALL	Allowed
int	ALL	Allowed
uint	ALL	Allowed
long	ALL	Allowed
ulong	ALL	Allowed
decimal	ALL	Allowed
string	ALL	Allowed
string	Constructor	Denied
Byte[]	ALL	Allowed

Types and Members Whitelist in System.Reflection Namespace

Type	Member (Field / Method)	Allowed
AssemblyCompanyAttribute	ALL	Allowed
AssemblyConfigurationAttribute	ALL	Allowed
AssemblyFileVersionAttribute	ALL	Allowed
AssemblyInformationalVersionAttribute	ALL	Allowed
AssemblyProductAttribute	ALL	Allowed
AssemblyTitleAttribute	ALL	Allowed

Other Whitelisted Namespaces

Namespace	Type	Member	Allowed
System.Linq	ALL	ALL	Allowed
System.Collections	ALL	ALL	Allowed
System.Collections.Generic	ALL	ALL	Allowed
System.Collections.ObjectModel	ALL	ALL	Allowed
System.Globalization	CultureInfo	InvariantCulture	Allowed
System.Runtime.CompilerServices	RuntimeHelpers	InitializeArray	Allowed
System.Text	Encoding	UTF8,GetByteCount	Allowed

Allowed Types for Arrays

Type	Size Limit	Threshold
byte	By Size	4 Mb
short	By Size	4 Mb
int	By Size	4 Mb
long	By Size	4 Mb
ushort	By Size	4 Mb
uint	By Size	4 Mb
ulong	By Size	4 Mb
decimal	By Size	4 Mb
char	By Size	4 Mb
string	By Size	128
Type	By Size	5
Object	By Size	5
FileDescriptor	By Count	10
GeneratedClrTypeInfo	By Count	100