362 lines
12 KiB
Python
362 lines
12 KiB
Python
# -*- coding: utf-8 -*-
|
||
|
||
import base64
|
||
import hashlib
|
||
import ipaddress
|
||
import logging
|
||
import re
|
||
import socket
|
||
import time
|
||
from typing import Tuple, Optional, Dict
|
||
from urllib.parse import urlparse
|
||
|
||
import requests
|
||
import urllib3
|
||
from urllib3.exceptions import MaxRetryError, ReadTimeoutError, ConnectTimeoutError
|
||
|
||
import setting
|
||
from favicon_app.utils import header
|
||
from favicon_app.utils.filetype import helpers, filetype
|
||
|
||
# 禁用SSL警告
|
||
urllib3.disable_warnings()
|
||
logging.captureWarnings(True)
|
||
# 配置日志
|
||
logger = logging.getLogger(__name__)
|
||
|
||
# 创建requests会话池
|
||
requests_session = requests.Session()
|
||
requests_session.max_redirects = 3
|
||
requests_session.verify = False
|
||
|
||
# 请求超时设置
|
||
DEFAULT_TIMEOUT = 10
|
||
DEFAULT_RETRIES = 2
|
||
|
||
# 存储失败的URL，值为缓存过期时间戳
|
||
failed_urls: Dict[str, int] = dict()
|
||
|
||
|
||
class Favicon:
|
||
"""Favicon类，用于处理网站图标的获取和解析
|
||
|
||
主要功能：
|
||
- 解析URL，提取协议、域名和端口
|
||
- 检查域名是否为内网地址
|
||
- 获取网站图标URL和内容
|
||
- 处理不同类型的图标路径
|
||
|
||
Attributes:
|
||
scheme: 协议类型(http/https)
|
||
domain: 域名
|
||
port: 端口号
|
||
domain_md5: 域名的MD5哈希值
|
||
icon_url: 图标URL
|
||
path: 访问路径
|
||
"""
|
||
# 协议://域名:端口号, 域名md5值
|
||
scheme: Optional[str] = None
|
||
domain: Optional[str] = None
|
||
port: Optional[int] = None
|
||
domain_md5: Optional[str] = None
|
||
icon_url: Optional[str] = None
|
||
# 访问路径
|
||
path: str = '/'
|
||
|
||
def __init__(self, url: str):
|
||
"""初始化Favicon对象
|
||
|
||
Args:
|
||
url: 要处理的URL字符串
|
||
"""
|
||
try:
|
||
url = url.lower().strip()
|
||
self._parse(url)
|
||
# 如果域名解析失败，尝试添加协议前缀
|
||
if not self.domain_md5 and ('.' in url):
|
||
if url.startswith('//'):
|
||
self._parse('http:' + url)
|
||
elif not (url.startswith('https://') or url.startswith('http://')):
|
||
self._parse('http://' + url)
|
||
except Exception as e:
|
||
logger.error('初始化错误: %s, URL: %s', str(e), url)
|
||
|
||
def _parse(self, url: str):
|
||
"""解析URL，提取协议、域名、路径和端口
|
||
|
||
Args:
|
||
url: 要解析的URL字符串
|
||
"""
|
||
try:
|
||
_url = urlparse(url)
|
||
self.scheme = _url.scheme
|
||
self.domain = _url.hostname
|
||
self.path = _url.path
|
||
self.port = _url.port
|
||
|
||
# 处理协议
|
||
if self.scheme not in ['https', 'http']:
|
||
if self.scheme:
|
||
logger.warning('不支持的协议类型: %s', self.scheme)
|
||
self.scheme = 'http'
|
||
|
||
# 检查域名合法性
|
||
if self.domain and not self._check_url(self.domain):
|
||
self.domain = None
|
||
|
||
# 生成域名MD5哈希值
|
||
if self.domain:
|
||
self.domain_md5 = hashlib.md5(self.domain.encode("utf-8")).hexdigest()
|
||
except Exception as e:
|
||
failed_url_cache(self.domain, setting.time_of_1_days)
|
||
self.scheme = None
|
||
self.domain = None
|
||
logger.error('URL解析错误: %s, URL: %s', str(e), url)
|
||
|
||
def _get_icon_url(self, icon_path: str):
|
||
"""根据图标路径生成完整的图标URL
|
||
|
||
Args:
|
||
icon_path: 图标路径
|
||
"""
|
||
if not icon_path or not self.domain or not self.scheme:
|
||
self.icon_url = None
|
||
return
|
||
|
||
if icon_path.startswith(('https://', 'http://')):
|
||
self.icon_url = icon_path
|
||
elif icon_path.startswith('//'):
|
||
self.icon_url = f"{self.scheme}:{icon_path}"
|
||
elif icon_path.startswith('/'):
|
||
self.icon_url = f"{self.scheme}://{self.domain}{icon_path}"
|
||
elif icon_path.startswith('..'):
|
||
clean_path = icon_path.replace('../', '')
|
||
self.icon_url = f"{self.scheme}://{self.domain}/{clean_path}"
|
||
elif icon_path.startswith('./'):
|
||
self.icon_url = f"{self.scheme}://{self.domain}{icon_path[1:]}"
|
||
elif icon_path.startswith('data:image'):
|
||
self.icon_url = icon_path
|
||
else:
|
||
self.icon_url = f"{self.scheme}://{self.domain}/{icon_path}"
|
||
|
||
def _get_icon_default(self):
|
||
"""获取网站默认favicon.ico路径
|
||
"""
|
||
if self.domain and self.scheme:
|
||
self.icon_url = f"{self.scheme}://{self.domain}/favicon.ico"
|
||
else:
|
||
self.icon_url = None
|
||
|
||
def get_icon_url(self, icon_path: str, default: bool = False) -> Optional[str]:
|
||
"""获取图标URL
|
||
|
||
Args:
|
||
icon_path: 图标路径
|
||
default: 是否使用默认图标路径
|
||
|
||
Returns:
|
||
完整的图标URL
|
||
"""
|
||
if default:
|
||
self._get_icon_default()
|
||
else:
|
||
self._get_icon_url(icon_path)
|
||
return self.icon_url
|
||
|
||
def get_icon_file(self, icon_path: str, default: bool = False) -> Tuple[Optional[bytes], Optional[str]]:
|
||
"""获取图标文件内容和类型
|
||
|
||
Args:
|
||
icon_path: 图标路径
|
||
default: 是否使用默认图标路径
|
||
|
||
Returns:
|
||
元组(图标内容, 内容类型)
|
||
"""
|
||
self.get_icon_url(icon_path, default)
|
||
|
||
if not self.icon_url or not self.domain or '.' not in self.domain:
|
||
return None, None
|
||
|
||
_content, _ct = None, None
|
||
try:
|
||
# 处理base64编码的图片
|
||
if self.icon_url.startswith('data:image') and 'base64,' in self.icon_url:
|
||
data_uri = self.icon_url.split(',')
|
||
if len(data_uri) == 2:
|
||
_content = base64.b64decode(data_uri[-1])
|
||
_ct = data_uri[0].split(';')[0].split(':')[-1]
|
||
else:
|
||
_content, _ct = self._req_get(self.icon_url, domain=self.domain)
|
||
|
||
# 验证是否为图片
|
||
# image/* application/x-ico
|
||
# if _ct and ('image' in _ct or 'ico' in _ct or helpers.is_image(_content)):
|
||
if _ct and _content and helpers.is_image(_content):
|
||
# 检查文件大小
|
||
if len(_content) > 5 * 1024 * 1024:
|
||
logger.warning('图片过大: %d bytes, 域名: %s', len(_content), self.domain)
|
||
return _content, filetype.guess_mime(_content) or _ct
|
||
except Exception as e:
|
||
logger.error('获取图标文件失败: %s, URL: %s', str(e), self.icon_url)
|
||
|
||
return None, None
|
||
|
||
def get_base_url(self) -> Optional[str]:
|
||
"""获取网站基础URL
|
||
|
||
Returns:
|
||
网站基础URL
|
||
"""
|
||
if not self.domain or '.' not in self.domain:
|
||
return None
|
||
|
||
_url = f"{self.scheme}://{self.domain}"
|
||
if self.port and self.port not in [80, 443]:
|
||
_url += f":{self.port}"
|
||
|
||
return _url
|
||
|
||
def req_get(self) -> Optional[bytes]:
|
||
"""获取网站首页内容
|
||
|
||
Returns:
|
||
网站首页HTML内容
|
||
"""
|
||
if not self.domain or '.' not in self.domain:
|
||
return None
|
||
|
||
_url = self.get_base_url()
|
||
_content, _ct = self._req_get(_url, domain=self.domain)
|
||
|
||
# 验证类型并检查大小
|
||
if _ct and ('text' in _ct or 'html' in _ct or 'xml' in _ct):
|
||
if _content and len(_content) > 30 * 1024 * 1024:
|
||
logger.error('页面内容过大: %d bytes, URL: %s', len(_content), _url)
|
||
return None
|
||
return _content
|
||
|
||
return None
|
||
|
||
@staticmethod
|
||
def _req_get(
|
||
url: str,
|
||
domain: str,
|
||
retries: int = DEFAULT_RETRIES,
|
||
timeout: int = DEFAULT_TIMEOUT
|
||
) -> Tuple[Optional[bytes], Optional[str]]:
|
||
"""发送HTTP GET请求获取内容
|
||
|
||
Args:
|
||
url: 请求URL
|
||
retries: 重试次数
|
||
timeout: 超时时间(秒)
|
||
|
||
Returns:
|
||
元组(内容, 内容类型)
|
||
"""
|
||
logger.info('发送请求: %s', url)
|
||
|
||
retry_count = 0
|
||
while retry_count <= retries:
|
||
try:
|
||
# 使用全局会话池
|
||
req = requests_session.get(
|
||
url,
|
||
headers=header.get_header(),
|
||
timeout=timeout,
|
||
allow_redirects=True,
|
||
verify=False
|
||
)
|
||
|
||
if req.ok:
|
||
ct_type = req.headers.get('Content-Type')
|
||
ct_length = req.headers.get('Content-Length')
|
||
|
||
# 处理Content-Type
|
||
if ct_type and ';' in ct_type:
|
||
_cts = ct_type.split(';')
|
||
if 'charset' in _cts[0]:
|
||
ct_type = _cts[-1].strip()
|
||
else:
|
||
ct_type = _cts[0].strip()
|
||
|
||
# 检查响应大小
|
||
if ct_length and int(ct_length) > 10 * 1024 * 1024:
|
||
logger.warning('响应过大: %d bytes, URL: %s', int(ct_length), url)
|
||
|
||
return req.content, ct_type
|
||
else:
|
||
failed_url_cache(domain, setting.time_of_7_days)
|
||
logger.error('请求失败: %d, URL: %s', req.status_code, url)
|
||
break
|
||
except (ConnectTimeoutError, ReadTimeoutError) as e:
|
||
retry_count += 1
|
||
if retry_count > retries:
|
||
logger.error('请求超时: %s, URL: %s', str(e), url)
|
||
else:
|
||
logger.warning('请求超时，正在重试(%d/%d): %s', retry_count, retries, url)
|
||
continue
|
||
except MaxRetryError as e:
|
||
logger.error('重定向次数过多: %s, URL: %s', str(e), url)
|
||
break
|
||
except Exception as e:
|
||
failed_url_cache(domain, setting.time_of_7_days)
|
||
logger.error('请求异常: %s, URL: %s', str(e), url)
|
||
break
|
||
|
||
return None, None
|
||
|
||
@staticmethod
|
||
def _check_url(domain: str) -> bool:
|
||
"""检查域名是否合法且非内网地址
|
||
|
||
Args:
|
||
domain: 域名
|
||
|
||
Returns:
|
||
域名是否合法且非内网地址
|
||
"""
|
||
return Favicon.check_internal(domain) and _pattern_domain.match(domain)
|
||
|
||
@staticmethod
|
||
def check_internal(domain: str) -> bool:
|
||
"""检查网址是否非内网地址
|
||
|
||
Args:
|
||
domain: 域名
|
||
|
||
Returns:
|
||
True: 非内网；False: 是内网/无法解析
|
||
"""
|
||
try:
|
||
# 检查是否为IP地址
|
||
if domain.replace('.', '').isdigit():
|
||
return not ipaddress.ip_address(domain).is_private
|
||
else:
|
||
# 解析域名获取IP地址
|
||
ips = socket.getaddrinfo(domain, None)
|
||
for ip_info in ips:
|
||
ip = ip_info[4][0]
|
||
if '.' in ip:
|
||
if not ipaddress.ip_address(ip).is_private:
|
||
return True
|
||
return False
|
||
except Exception as e:
|
||
failed_url_cache(domain, setting.time_of_7_days)
|
||
logger.error('解析域名出错: %s, 错误: %s', domain, str(e))
|
||
return False
|
||
|
||
|
||
# 域名验证正则表达式
|
||
_pattern_domain = re.compile(
|
||
r'[a-zA-Z0-9\u4E00-\u9FA5][-a-zA-Z0-9\u4E00-\u9FA5]{0,62}(\.[a-zA-Z0-9\u4E00-\u9FA5][-a-zA-Z0-9\u4E00-\u9FA5]{0,62})+\.?',
|
||
re.I)
|
||
|
||
|
||
def failed_url_cache(_domain: str, _time: int):
|
||
if _domain:
|
||
_current_time = int(time.time())
|
||
if (not failed_urls.get(_domain)) or (_current_time <= failed_urls.get(_domain)):
|
||
failed_urls[_domain] = _current_time + _time
|