Merge pull request #2320 from crytic/fix/inheritance-renaming

fix: support renaming in base inheritance and base constructor calls

slither/solc_parsing/slither_compilation_unit_solc.py

@@ -432,61 +432,56 @@ def parse_contracts(self) -> None:  # pylint: disable=too-many-statements,too-ma
             self._contracts_by_id[contract.id] = contract
             self._compilation_unit.contracts.append(contract)
 
+        def resolve_remapping_and_renaming(contract_parser: ContractSolc, want: str) -> Contract:
+            contract_name = contract_parser.remapping[want]
+            if contract_name in contract_parser.underlying_contract.file_scope.renaming:
+                contract_name = contract_parser.underlying_contract.file_scope.renaming[
+                    contract_name
+                ]
+            target = contract_parser.underlying_contract.file_scope.get_contract_from_name(
+                contract_name
+            )
+            if target == contract_parser.underlying_contract:
+                raise InheritanceResolutionError(
+                    "Could not resolve contract inheritance. This is likely caused by an import renaming that collides with existing names (see https://github.com/crytic/slither/issues/1758)."
+                    f"\n Try changing `contract {target}` ({target.source_mapping}) to a unique name."
+                )
+            assert target, f"Contract {contract_name} not found"
+            return target
+
         # Update of the inheritance
         for contract_parser in self._underlying_contract_to_parser.values():
-            # remove the first elem in linearizedBaseContracts as it is the contract itself
             ancestors = []
             fathers = []
             father_constructors = []
-            # try:
-            # Resolve linearized base contracts.
             missing_inheritance = None
 
+            # Resolve linearized base contracts.
+            # Remove the first elem in linearizedBaseContracts as it is the contract itself.
             for i in contract_parser.linearized_base_contracts[1:]:
                 if i in contract_parser.remapping:
-                    contract_name = contract_parser.remapping[i]
-                    if contract_name in contract_parser.underlying_contract.file_scope.renaming:
-                        contract_name = contract_parser.underlying_contract.file_scope.renaming[
-                            contract_name
-                        ]
-                    target = contract_parser.underlying_contract.file_scope.get_contract_from_name(
-                        contract_name
-                    )
-                    if target == contract_parser.underlying_contract:
-                        raise InheritanceResolutionError(
-                            "Could not resolve contract inheritance. This is likely caused by an import renaming that collides with existing names (see https://github.com/crytic/slither/issues/1758)."
-                            f"\n Try changing `contract {target}` ({target.source_mapping}) to a unique name."
-                        )
-                    assert target, f"Contract {contract_name} not found"
+                    target = resolve_remapping_and_renaming(contract_parser, i)
                     ancestors.append(target)
                 elif i in self._contracts_by_id:
                     ancestors.append(self._contracts_by_id[i])
                 else:
                     missing_inheritance = i
 
-            # Resolve immediate base contracts
+            # Resolve immediate base contracts.
             for i in contract_parser.baseContracts:
                 if i in contract_parser.remapping:
-                    fathers.append(
-                        contract_parser.underlying_contract.file_scope.get_contract_from_name(
-                            contract_parser.remapping[i]
-                        )
-                        # self._compilation_unit.get_contract_from_name(contract_parser.remapping[i])
-                    )
+                    target = resolve_remapping_and_renaming(contract_parser, i)
+                    fathers.append(target)
                 elif i in self._contracts_by_id:
                     fathers.append(self._contracts_by_id[i])
                 else:
                     missing_inheritance = i
 
-            # Resolve immediate base constructor calls
+            # Resolve immediate base constructor calls.
             for i in contract_parser.baseConstructorContractsCalled:
                 if i in contract_parser.remapping:
-                    father_constructors.append(
-                        contract_parser.underlying_contract.file_scope.get_contract_from_name(
-                            contract_parser.remapping[i]
-                        )
-                        # self._compilation_unit.get_contract_from_name(contract_parser.remapping[i])
-                    )
+                    target = resolve_remapping_and_renaming(contract_parser, i)
+                    father_constructors.append(target)
                 elif i in self._contracts_by_id:
                     father_constructors.append(self._contracts_by_id[i])
                 else:

tests/unit/core/test_data/inheritance_with_renaming/a.sol

@@ -0,0 +1,4 @@
+import {B as Base} from "./b.sol";
+contract A is Base(address(0)) {
+    constructor (address x) {}
+}

tests/unit/core/test_data/inheritance_with_renaming/b.sol

@@ -0,0 +1,4 @@
+import {C as C2} from "./c.sol";
+contract B is C2 {
+    constructor (address x) C2(x) {}
+}

tests/unit/core/test_data/inheritance_with_renaming/c.sol

@@ -0,0 +1,3 @@
+contract C {
+    constructor (address) {}
+}

tests/unit/core/test_inheritance.py

@@ -0,0 +1,36 @@
+from pathlib import Path
+
+from crytic_compile import CryticCompile
+from crytic_compile.platform.solc_standard_json import SolcStandardJson
+from slither import Slither
+
+TEST_DATA_DIR = Path(__file__).resolve().parent / "test_data" / "inheritance_with_renaming"
+
+# https://github.com/crytic/slither/issues/2304
+def test_inheritance_with_renaming(solc_binary_path) -> None:
+    solc_path = solc_binary_path("0.8.15")
+    standard_json = SolcStandardJson()
+    for source_file in Path(TEST_DATA_DIR).rglob("*.sol"):
+        print(source_file)
+        standard_json.add_source_file(Path(source_file).as_posix())
+    compilation = CryticCompile(standard_json, solc=solc_path)
+    slither = Slither(compilation)
+
+    a = slither.get_contract_from_name("A")[0]
+    b = slither.get_contract_from_name("B")[0]
+    c = slither.get_contract_from_name("C")[0]
+
+    assert len(a.immediate_inheritance) == 1
+    assert a.immediate_inheritance[0] == b
+    assert len(a.inheritance) == 2
+    assert a.inheritance[0] == b
+    assert a.inheritance[1] == c
+    assert len(a.explicit_base_constructor_calls) == 1
+    a_base_constructor_call = a.explicit_base_constructor_calls[0]
+    assert a_base_constructor_call == b.constructor
+
+    assert len(b.inheritance) == 1
+    assert b.inheritance[0] == c
+    assert len(b.immediate_inheritance) == 1
+    assert b.immediate_inheritance[0] == c
+    assert len(b.explicit_base_constructor_calls) == 0