Merge pull request #1571 from crytic/dev-add-no-fail

Add --no-fail mode

slither/__main__.py

@@ -555,6 +555,13 @@ def parse_args(
         default=False,
     )
 
+    group_misc.add_argument(
+        "--no-fail",
+        help="Do not fail in case of parsing (echidna mode only)",
+        action="store_true",
+        default=defaults_flag_in_config["no_fail"],
+    )
+
     codex.init_parser(parser)
 
     # debugger command

slither/core/slither_core.py

@@ -92,6 +92,10 @@ class SlitherCore(Context):
         # But we allow to alter this (ex: file.sol:1) for vscode integration
         self.line_prefix: str = "#"
 
+        # Use by the echidna printer
+        # If true, partial analysis is allowed
+        self.no_fail = False
+
     @property
     def compilation_units(self) -> List[SlitherCompilationUnit]:
         return list(self._compilation_units)

slither/printers/guidance/echidna.py

@@ -329,27 +329,32 @@ def _call_a_parameter(slither: SlitherCore) -> Dict[str, List[Dict]]:
     ret: Dict[str, List[Dict]] = defaultdict(list)
     for contract in slither.contracts:  # pylint: disable=too-many-nested-blocks
         for function in contract.functions_entry_points:
-            for ir in function.all_slithir_operations():
-                if isinstance(ir, HighLevelCall):
-                    for idx, parameter in enumerate(function.parameters):
-                        if is_dependent(ir.destination, parameter, function):
-                            ret[contract.name].append(
-                                {
-                                    "function": _get_name(function),
-                                    "parameter_idx": idx,
-                                    "signature": _get_name(ir.function),
-                                }
-                            )
-                if isinstance(ir, LowLevelCall):
-                    for idx, parameter in enumerate(function.parameters):
-                        if is_dependent(ir.destination, parameter, function):
-                            ret[contract.name].append(
-                                {
-                                    "function": _get_name(function),
-                                    "parameter_idx": idx,
-                                    "signature": None,
-                                }
-                            )
+            try:
+                for ir in function.all_slithir_operations():
+                    if isinstance(ir, HighLevelCall):
+                        for idx, parameter in enumerate(function.parameters):
+                            if is_dependent(ir.destination, parameter, function):
+                                ret[contract.name].append(
+                                    {
+                                        "function": _get_name(function),
+                                        "parameter_idx": idx,
+                                        "signature": _get_name(ir.function),
+                                    }
+                                )
+                    if isinstance(ir, LowLevelCall):
+                        for idx, parameter in enumerate(function.parameters):
+                            if is_dependent(ir.destination, parameter, function):
+                                ret[contract.name].append(
+                                    {
+                                        "function": _get_name(function),
+                                        "parameter_idx": idx,
+                                        "signature": None,
+                                    }
+                                )
+            except Exception as e:
+                if slither.no_fail:
+                    continue
+                raise e
     return ret
 
 

slither/slither.py

@@ -91,6 +91,8 @@ class Slither(SlitherCore):  # pylint: disable=too-many-instance-attributes
         self.codex_max_tokens = kwargs.get("codex_max_tokens", 300)
         self.codex_log = kwargs.get("codex_log", False)
 
+        self.no_fail = kwargs.get("no_fail", False)
+
         self._parsers: List[SlitherCompilationUnitSolc] = []
         try:
             if isinstance(target, CryticCompile):
@@ -128,41 +130,27 @@ class Slither(SlitherCore):  # pylint: disable=too-many-instance-attributes
 
         triage_mode = kwargs.get("triage_mode", False)
         self._triage_mode = triage_mode
+        self._init_parsing_and_analyses(kwargs.get("skip_analyze", False))
+
+    def _init_parsing_and_analyses(self, skip_analyze: bool) -> None:
 
         for parser in self._parsers:
-            parser.parse_contracts()
+            try:
+                parser.parse_contracts()
+            except Exception as e:
+                if self.no_fail:
+                    continue
+                raise e
 
         # skip_analyze is only used for testing
-        if not kwargs.get("skip_analyze", False):
+        if not skip_analyze:
             for parser in self._parsers:
-                parser.analyze_contracts()
-
-    # def _init_from_raw_json(self, filename):
-    #     if not os.path.isfile(filename):
-    #         raise SlitherError(
-    #             "{} does not exist (are you in the correct directory?)".format(filename)
-    #         )
-    #     assert filename.endswith("json")
-    #     with open(filename, encoding="utf8") as astFile:
-    #         stdout = astFile.read()
-    #         if not stdout:
-    #             to_log = f"Empty AST file: {filename}"
-    #             raise SlitherError(to_log)
-    #     contracts_json = stdout.split("\n=")
-    #
-    #     self._parser = SlitherCompilationUnitSolc(filename, self)
-    #
-    #     for c in contracts_json:
-    #         self._parser.parse_top_level_from_json(c)
-
-    # def _init_from_list(self, contract):
-    #     self._parser = SlitherCompilationUnitSolc("", self)
-    #     for c in contract:
-    #         if "absolutePath" in c:
-    #             path = c["absolutePath"]
-    #         else:
-    #             path = c["attributes"]["absolutePath"]
-    #         self._parser.parse_top_level_from_loaded_json(c, path)
+                try:
+                    parser.analyze_contracts()
+                except Exception as e:
+                    if self.no_fail:
+                        continue
+                    raise e
 
     @property
     def detectors(self):

slither/utils/command_line.py

@@ -60,6 +60,7 @@ defaults_flag_in_config = {
     "zip": None,
     "zip_type": "lzma",
     "show_ignored_findings": False,
+    "no_fail": False,
     **DEFAULTS_FLAG_IN_CONFIG_CRYTIC_COMPILE,
 }