Rc1 (#84)

* neo-project/neo#2295
* neo-project/neo#2290
* neo-project/neo#2292
* neo-project/neo#2296
* neo-project/neo#2301
* neo-project/neo#2298
* neo-project/neo#2312
* neo-project/neo#2300
* neo-project/neo#2333
* neo-project/neo#2337
* neo-project/neo#2331
* neo-project/neo#2332
* neo-project/neo#2343
* neo-project/neo#2339
* neo-project/neo#2350
* neo-project/neo#2351
* neo-project/neo#2353
* neo-project/neo#2356
* neo-project/neo#2375
* neo-project/neo#2377
* neo-project/neo#2379
* https://github.com/neo-project/neo/pull/2392/files
* neo-project/neo#2400
* audit updates
* refactor and bump VM requirement

neo3/__init__.py

@@ -85,6 +85,9 @@ class Settings(IndexableNamespace):
                 }
             }
         },
+        'policy': {
+            'max_tx_per_block': 512
+        },
         'native_contract_activation': {}
     }
 

neo3/blockchain.py

@@ -36,20 +36,19 @@ def height(self):
 
     @staticmethod
     def _create_genesis_block() -> payloads.Block:
-        b = payloads.Block(
+        h = payloads.Header(
             version=0,
             prev_hash=types.UInt256.zero(),
             timestamp=int(datetime(2016, 7, 15, 15, 8, 21, 0, timezone.utc).timestamp() * 1000),
             index=0,
+            primary_index=0,
             next_consensus=contracts.Contract.get_consensus_address(settings.standby_validators),
             witness=payloads.Witness(
                 invocation_script=b'',
                 verification_script=b'\x11'  # (OpCode.PUSH1)
             ),
-            consensus_data=payloads.ConsensusData(primary_index=0, nonce=2083236893),
-            transactions=[]
         )
-        return b
+        return payloads.Block(header=h, transactions=[])
 
     def persist(self, block: payloads.Block):
         with self.backend.get_snapshotview() as snapshot:
@@ -77,6 +76,7 @@ def persist(self, block: payloads.Block):
                     cloned_snapshot.commit()
                 else:
                     cloned_snapshot = snapshot.clone()
+
             engine = contracts.ApplicationEngine(contracts.TriggerType.POST_PERSIST,
                                                  None, snapshot, 0, True)  # type: ignore
             engine.load_script(vm.Script(self.native_postpersist_script))
@@ -90,6 +90,8 @@ def persist(self, block: payloads.Block):
             Therefore we wait with persisting the block until here
             """
             snapshot.blocks.put(block)
+            snapshot.best_block_height = block.index
+
             snapshot.commit()
             self._current_snapshot = snapshot
         msgrouter.on_block_persisted(block)

neo3/contracts/__init__.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 import hashlib
+import typing
 from .callflags import CallFlags
 from .contracttypes import (TriggerType)
 from .descriptor import (ContractPermissionDescriptor)
@@ -30,13 +31,21 @@
                      NonFungibleToken,
                      NFTState,
                      NameService,
-                     LedgerContract)
+                     LedgerContract,
+                     CryptoContract,
+                     StdLibContract)
 
 
 def syscall_name_to_int(name: str) -> int:
     return int.from_bytes(hashlib.sha256(name.encode()).digest()[:4], 'little', signed=False)
 
 
+def validate_type(obj: object, type_: typing.Type):
+    if type(obj) != type_:
+        raise ValueError(f"Expected type '{type_}' , got '{type(obj)}' instead")
+    return obj
+
+
 __all__ = ['ContractParameterType',
            'TriggerType',
            'ContractMethodDescriptor',
@@ -58,4 +67,6 @@ def syscall_name_to_int(name: str) -> int:
            'LedgerContract',
            'NEF',
            'MethodToken',
-           'FindOptions']
+           'FindOptions',
+           'CryptoContract',
+           'StdLibContract']

neo3/contracts/abi.py

@@ -2,7 +2,7 @@
 import enum
 from typing import List, Optional, Type, Union, cast
 from enum import IntEnum
-from neo3.core import types, IJson, IInteroperable, serialization
+from neo3.core import types, IJson, IInteroperable, serialization, cryptography
 from neo3 import contracts, vm
 
 
@@ -18,13 +18,13 @@ class ContractParameterType(IntEnum):
     SIGNATURE = 0x17,
     ARRAY = 0x20,
     MAP = 0x22,
-    INTEROP_INTERFACE = 0x30,
+    INTEROPINTERFACE = 0x30,
     VOID = 0xff
 
     def PascalCase(self) -> str:
         if self == ContractParameterType.BYTEARRAY:
             return "ByteArray"
-        elif self == ContractParameterType.INTEROP_INTERFACE:
+        elif self == ContractParameterType.INTEROPINTERFACE:
             return "InteropInterface"
         elif self == ContractParameterType.PUBLICKEY:
             return "PublicKey"
@@ -41,6 +41,8 @@ def from_type(cls, class_type: Optional[Type[object]]) -> ContractParameterType:
             return ContractParameterType.INTEGER
         elif class_type in [bytes, bytearray, vm.BufferStackItem, vm.ByteStringStackItem]:
             return ContractParameterType.BYTEARRAY
+        elif class_type == cryptography.ECPoint:
+            return ContractParameterType.PUBLICKEY
         elif hasattr(class_type, '__origin__'):
             if class_type.__origin__ == list:  # type: ignore
                 return ContractParameterType.ARRAY
@@ -64,10 +66,12 @@ def from_type(cls, class_type: Optional[Type[object]]) -> ContractParameterType:
             return ContractParameterType.ARRAY
         elif issubclass(class_type, IInteroperable):
             return ContractParameterType.ARRAY
+        elif class_type == vm.StackItem:
+            return ContractParameterType.ANY
         elif issubclass(class_type, enum.Enum):
             return ContractParameterType.INTEGER
         else:
-            return ContractParameterType.ANY
+            return ContractParameterType.INTEROPINTERFACE
 
 
 class ContractParameterDefinition(IJson):
@@ -112,8 +116,8 @@ def from_json(cls, json: dict) -> ContractParameterDefinition:
             ValueError: if the type is VOID.
         """
         c = cls(
-            name=json['name'],
-            type=contracts.ContractParameterType[json['type'].upper()]
+            name=contracts.validate_type(json['name'], str),
+            type=contracts.ContractParameterType[contracts.validate_type(json['type'], str).upper()]
         )
         if c.name is None or len(c.name) == 0:
             raise ValueError("Format error - invalid 'name'")
@@ -169,7 +173,7 @@ def from_json(cls, json: dict) -> ContractEventDescriptor:
             ValueError: if the 'name' property has an incorrect format
         """
         c = cls(
-            name=json['name'],
+            name=contracts.validate_type(json['name'], str),
             parameters=list(map(lambda p: ContractParameterDefinition.from_json(p), json['parameters']))
         )
         if c.name is None or len(c.name) == 0:
@@ -241,11 +245,11 @@ def from_json(cls, json: dict) -> ContractMethodDescriptor:
             ValueError: if the offset is negative.
         """
         c = cls(
-            name=json['name'],
-            offset=json['offset'],
+            name=contracts.validate_type(json['name'], str),
+            offset=contracts.validate_type(json['offset'], int),
             parameters=list(map(lambda p: contracts.ContractParameterDefinition.from_json(p), json['parameters'])),
-            return_type=contracts.ContractParameterType[json['returntype'].upper()],
-            safe=json['safe']
+            return_type=contracts.ContractParameterType[contracts.validate_type(json['returntype'], str).upper()],
+            safe=contracts.validate_type(json['safe'], bool)
         )
         if c.name is None or len(c.name) == 0:
             raise ValueError("Format error - invalid 'name'")