def choice_matcher(self, scan_paths, rule):
"""Run a Single Choice Matcher rule on all files."""
try:
matches = set()
all_matches = set()
for sfile in scan_paths:
ext = sfile.suffix.lower()
if self.exts and ext not in self.exts:
continue
if sfile.stat().st_size / 1000 / 1000 > 5:
# Skip scanning files greater than 5 MB
continue
data = sfile.read_text('utf-8', 'ignore')
if ext in ('.html', '.xml'):
data = strip_comments2(data)
else:
data = strip_comments(data)
match = choices.find_choices(data, rule)
if match:
if isinstance(match, set):
# all
all_matches.update(match)
elif isinstance(match, list):
# or, and
matches.add(match[0])
self.add_finding(rule, matches, all_matches)
except Exception:
raise exceptions.RuleProcessingError('Rule processing error.')
def pattern_matcher(self, data, file_path):
"""Static Analysis Pattern Matcher."""
try:
for rule in self.scan_rules:
case = rule.get('input_case')
if case == 'lower':
data = data.lower()
elif case == 'upper':
data = data.upper()
fmt_data = strip_comments(data)
matches = self.matcher._find_match(rule['type'], fmt_data,
rule)
if matches:
self.add_finding(file_path, rule, matches)
except Exception:
raise exceptions.RuleProcessingException('Rule processing error.')