import re


__all__ = [
    'match_ipv4',
    'match_ipv6',
    'match_safe_path',
    'match_class_private_property',
    'match_based_host',
    'find_url_root',
    'search_php_first_fatal_error',
    'search_http_response_status_line',
    'match_general_version_format',
    'match_md5_format',
    'search_sql_special_chars',
    'match_email',
]

# 匹配IP地址
match_ipv4 = re.compile(r'^(?:(?:25[0-5]|(?:2[0-4]|1?\d)?\d)\.){3}(?:25[0-5]|(?:2[0-4]|1?\d)?\d)$')
match_ipv6 = re.compile(r'^(?:(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4})|(?:(?:[0-9a-fA-F]{1,4}:){1,7}:)|(?:(?:[0-9a-fA-F]{1,4}:){6}:[0-9a-fA-F]{1,4})|(?:(?:[0-9a-fA-F]{1,4}:){5}(?::[0-9a-fA-F]{1,4}){1,2})|(?:(?:[0-9a-fA-F]{1,4}:){4}(?::[0-9a-fA-F]{1,4}){1,3})|(?:(?:[0-9a-fA-F]{1,4}:){3}(?::[0-9a-fA-F]{1,4}){1,4})|(?:(?:[0-9a-fA-F]{1,4}:){2}(?::[0-9a-fA-F]{1,4}){1,5})|(?:(?:[0-9a-fA-F]{1,4}:){1}(?::[0-9a-fA-F]{1,4}){1,6})|(?::(?:(?::[0-9a-fA-F]{1,4}){1,7}|:))')

# 安全文件路径
match_safe_path = re.compile(r'^[\w\s./\-]*$')

# 匹配类私有属性名称
match_class_private_property = re.compile(r'^(?:_\w+)?__\w+')

# HOST基本格式
match_based_host = re.compile(r'^[\w.:\-]+$')

# 抓取URL根路径
find_url_root = re.compile(r'(https|http)://([\w:.\-]+)', re.IGNORECASE)

# 匹配首条PHP Fatal error信息
search_php_first_fatal_error = re.compile(r'PHP Fatal error: \s*([^\r\n]+)')

# 匹配HTTP响应报文中的状态行 (Status Line)
search_http_response_status_line = re.compile(r'HTTP/\d+(?:\.\d+)? (\d{1,3}) .*')

# 通用版本号格式验证 major.minor[.patch]/主版本.子版本[.修订号]
match_general_version_format = re.compile(r'^\d+(?:\.\d+){1,2}$')

# md5格式验证
match_md5_format = re.compile(r'^[a-fA-F0-9]{32}$')

# SQL字符串中的常用特殊字符
search_sql_special_chars = re.compile(r'''(?<!\\)(?:[%_]|\\(?![^\\abfnrtvxuUN'"0-7]))''')

# 匹配Email
match_email = re.compile(r'^.+@(\[?)[a-zA-Z0-9\-_.]+\.(?:[a-zA-Z]{2,}|\d{1,3})\1$')