core: e2e: allow running without any hanresses present

Signed-off-by: David Korczynski <david@adalogics.com>

src/fuzz_introspector/analysis.py

@@ -65,9 +65,9 @@ def load_data_files(self, parallelise=True, correlation_file=None):
                                                       parallelise)
 
         logger.info(f"Found {len(self.profiles)} profiles")
-        if len(self.profiles) == 0:
-            logger.info("Found no profiles")
-            raise DataLoaderError("No fuzzer profiles")
+        #if len(self.profiles) == 0:
+        #    logger.info("Found no profiles")
+        #    raise DataLoaderError("No fuzzer profiles")
 
         self.input_bugs = data_loader.try_load_input_bugs()
         correlation_dict = utils.data_file_read_yaml(correlation_file)

src/fuzz_introspector/cli.py

@@ -43,6 +43,7 @@ def get_cmdline_parser() -> argparse.ArgumentParser:
     full_parser = subparsers.add_parser('full', help='End to end run')
     full_parser.add_argument('--target_dir')
     full_parser.add_argument('--language')
+    full_parser.add_argument('--module-only', action='store_true')
 
     # Report generation command
     report_parser = subparsers.add_parser(

src/fuzz_introspector/commands.py

@@ -47,8 +47,15 @@ def correlate_binaries_to_logs(binaries_dir: str) -> int:
 def end_to_end(args) -> int:
     """Runs both frontend and backend."""
     oss_fuzz.analyse_folder(args.language, args.target_dir,
-                            'LLVMFuzzerTestOneInput')
-
+                            'LLVMFuzzerTestOneInput',
+                            module_only=args.module_only)
+
+    if args.module_only:
+        if os.path.isfile('report.yaml'):
+            shutil.copy('report.yaml', 'fuzzerLogFile-1.data.yaml')
+            with open('fuzzerLogFile-1.data', 'w') as f:
+                f.write("Call tree\n")
+                f.write("====================================")
     if 'c' in args.language:
         language = 'c-cpp'
     else:

src/fuzz_introspector/data_loader.py

@@ -69,7 +69,7 @@ def read_fuzzer_data_file_to_profile(
 
     if not profile.has_entry_point():
         logger.info("Found no entrypoints")
-        return None
+        #return None
     logger.info("Returning profile")
     return profile
 

src/fuzz_introspector/datatypes/fuzzer_profile.py

@@ -493,8 +493,8 @@ def _set_all_reached_functions(self) -> None:
                     self.all_class_functions[entrypoint].functions_reached)
                 self.functions_reached_by_fuzzer.append(entrypoint)
                 return
-
-        raise DataLoaderError("Can not identify entrypoint")
+        self.functions_reached_by_fuzzer = []
+        #raise DataLoaderError("Can not identify entrypoint")
 
     def _set_all_unreached_functions(self) -> None:
         """Sets self.functions_unreached_by_fuzzer to all functions that are

src/fuzz_introspector/datatypes/project_profile.py

@@ -230,6 +230,8 @@ def target_lang(self):
         if len(set_of_targets) > 1:
             raise exceptions.AnalysisError(
                 "Project has fuzzers with multiple targets")
+        if len(set_of_targets) == 0:
+            return 'c-cpp'
         return set_of_targets.pop()
 
     @property

src/fuzz_introspector/html_helpers.py

@@ -212,6 +212,8 @@ def html_get_table_of_contents(
         cov_index = "report.html"
     elif proj_profile.target_lang == "go":
         cov_index = "index.html"
+    else:
+        cov_index = 'report.html'
 
     html_toc_string = ""
     html_toc_string += f"""<div class="left-sidebar">\