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| import hashlib
from datetime import datetime
department_tables = {
'HR': ['employee_info', 'salary_data', 'personal_info'],
'Finance': ['financial_reports', 'budget_data', 'payment_records'],
'IT': ['system_logs', 'server_data', 'network_config'],
'Sales': ['customer_data', 'sales_records', 'product_info']
}
sensitive_fields = ['salary', 'ssn', 'phone', 'email', 'address']
users = {
'user1': {'department': 'IT', 'tables': ['server_data', 'system_logs'], 'role': 'user'},
'user2': {'department': 'Finance', 'tables': ['budget_data', 'payment_records'], 'role': 'user'},
'user3': {'department': 'IT', 'tables': ['system_logs'], 'role': 'user'},
'user4': {'department': 'HR', 'tables': ['employee_info', 'personal_info', 'salary_data'], 'role': 'admin'},
'user5': {'department': 'Sales', 'tables': ['product_info', 'sales_records', 'customer_data'], 'role': 'admin'},
'user6': {'department': 'Sales', 'tables': ['sales_records'], 'role': 'admin'},
'user7': {'department': 'Finance', 'tables': ['payment_records', 'budget_data', 'financial_reports'],
'role': 'user'},
'user8': {'department': 'Finance', 'tables': ['budget_data', 'payment_records', 'financial_reports'],
'role': 'admin'},
'user9': {'department': 'HR', 'tables': ['employee_info'], 'role': 'user'},
'user10': {'department': 'Finance', 'tables': ['financial_reports', 'budget_data'], 'role': 'user'},
'user11': {'department': 'Sales', 'tables': ['sales_records', 'customer_data'], 'role': 'user'},
'user12': {'department': 'Sales', 'tables': ['customer_data', 'sales_records', 'product_info'], 'role': 'user'},
'user13': {'department': 'Sales', 'tables': ['customer_data', 'product_info'], 'role': 'user'},
'user14': {'department': 'HR', 'tables': ['personal_info', 'employee_info'], 'role': 'user'},
'user15': {'department': 'Sales', 'tables': ['customer_data'], 'role': 'user'},
'user16': {'department': 'Sales', 'tables': ['product_info', 'customer_data'], 'role': 'user'},
'user17': {'department': 'Sales', 'tables': ['customer_data'], 'role': 'user'},
'user18': {'department': 'HR', 'tables': ['personal_info'], 'role': 'user'},
'user19': {'department': 'Finance', 'tables': ['budget_data', 'payment_records', 'financial_reports'],
'role': 'user'},
'user20': {'department': 'HR', 'tables': ['salary_data', 'employee_info', 'personal_info'], 'role': 'admin'}
}
def parse_log_line(line):
parts = line.strip().split(' ')
log_id = parts[0]
timestamp = ' '.join(parts[1:3])
user = parts[3]
action = ' '.join(parts[4:])
if 'QUERY' in action:
op_type = 'QUERY'
details = action.replace('QUERY ', '')
elif 'BACKUP' in action:
op_type = 'BACKUP'
details = action.replace('BACKUP ', '')
else:
op_type = action.split(' ')[0]
details = action.replace(op_type + ' ', '') if op_type + ' ' in action else ''
return {
'log_id': log_id,
'timestamp': timestamp,
'user': user,
'op_type': op_type,
'details': details
}
def check_violations(log):
violations = []
try:
time_obj = datetime.strptime(log['timestamp'], "%Y-%m-%d %H:%M:%S")
if 0 <= time_obj.hour < 5:
violations.append('3')
except:
pass
if log['op_type'] in ['QUERY', 'BACKUP']:
user_info = users.get(log['user'], {})
if not user_info:
return violations
table_accessed = log['details'].split(' ')[0].split(';')[0]
if table_accessed not in user_info['tables']:
violations.append('1')
if 'field=' in log['details']:
fields_part = log['details'].split('field=')[1]
fields = fields_part.split(',')[0].split(';')
for field in fields:
if field.strip() in sensitive_fields:
violations.append('2')
break
if log['op_type'] == 'BACKUP' and user_info['role'] != 'admin':
violations.append('4')
return violations
def main():
with open('database_logs.txt', 'r') as f:
logs = f.readlines()
violations_list = []
for log_line in logs:
try:
log = parse_log_line(log_line)
violations = check_violations(log)
for v in violations:
violations_list.append(f"{v}-{log['log_id']}")
except Exception as e:
print(f"Error processing line: {log_line.strip()} - {str(e)}")
continue
violations_list.sort(key=lambda x: int(x.split('-')[1]))
output = ','.join(violations_list)
print(f"违规记录: {output}")
md5_hash = hashlib.md5(output.encode()).hexdigest()
print(f"flag{{{md5_hash}}}")
if __name__ == '__main__':
main()
|
