102 lines
3.7 KiB
Python
102 lines
3.7 KiB
Python
from config import Config
|
||
from .cache import random_cache_path
|
||
from core.logger import Logger
|
||
from tenacity import retry, wait_fixed, stop_after_attempt
|
||
import filetype as ft
|
||
from aiofile import async_open
|
||
import aiohttp
|
||
from typing import Union
|
||
import traceback
|
||
import socket
|
||
import re
|
||
import urllib.parse
|
||
|
||
|
||
def private_ip_check(url: str):
|
||
'''检查是否为私有IP，若是则抛出ValueError异常。
|
||
|
||
:param url: 需要检查的url。'''
|
||
hostname = urllib.parse.urlparse(url).hostname
|
||
addr_info = socket.getaddrinfo(hostname, 80)
|
||
private_ips = re.compile(
|
||
r'^(?:127\.|0?10\.|172\.0?1[6-9]\.|172\.0?2[0-9]\.172\.0?3[01]\.|192\.168\.|169\.254\.|::1|[fF][cCdD][0-9a-fA-F]{2}:|[fF][eE][89aAbB][0-9a-fA-F]:)')
|
||
addr = addr_info[0][4][0]
|
||
if private_ips.match(addr):
|
||
raise ValueError(
|
||
f'Attempt of requesting private IP addresses is not allowed, requesting {hostname}.')
|
||
|
||
|
||
@retry(stop=stop_after_attempt(3), wait=wait_fixed(3), reraise=True)
|
||
async def get_url(url: str, status_code: int = False, headers: dict = None, fmt=None, log=False, timeout=20):
|
||
"""利用AioHttp获取指定url的内容。
|
||
|
||
:param url: 需要获取的url。
|
||
:param status_code: 指定请求到的状态码，若不符则抛出ValueError。
|
||
:param headers: 请求时使用的http头。
|
||
:param fmt: 指定返回的格式。
|
||
:param log: 是否输出日志。
|
||
:param timeout: 超时时间。
|
||
:returns: 指定url的内容（字符串）。
|
||
"""
|
||
|
||
if not Config('allow_request_private_ip'):
|
||
private_ip_check(url)
|
||
|
||
async with aiohttp.ClientSession(headers=headers) as session:
|
||
async with session.get(url, timeout=aiohttp.ClientTimeout(total=timeout), headers=headers) as req:
|
||
if log:
|
||
Logger.info(await req.read())
|
||
if status_code and req.status != status_code:
|
||
raise ValueError(
|
||
f'{str(req.status)}[Ke:Image,path=https://http.cat/{str(req.status)}.jpg]')
|
||
if fmt is not None:
|
||
if hasattr(req, fmt):
|
||
return await getattr(req, fmt)()
|
||
else:
|
||
raise ValueError(f"NoSuchMethod: {fmt}")
|
||
else:
|
||
text = await req.text()
|
||
return text
|
||
|
||
|
||
@ retry(stop=stop_after_attempt(3), wait=wait_fixed(3), reraise=True)
|
||
async def post_url(url: str, data: any, headers: dict = None):
|
||
'''发送POST请求。
|
||
:param url: 需要发送的url。
|
||
:param data: 需要发送的数据。
|
||
:param headers: 请求时使用的http头。
|
||
:returns: 发送请求后的响应。'''
|
||
|
||
if not Config('allow_request_private_ip'):
|
||
private_ip_check(url)
|
||
|
||
async with aiohttp.ClientSession(headers=headers) as session:
|
||
async with session.post(url, data=data, headers=headers) as req:
|
||
return await req.text()
|
||
|
||
|
||
@ retry(stop=stop_after_attempt(3), wait=wait_fixed(3), reraise=True)
|
||
async def download_to_cache(url: str) -> Union[str, bool]:
|
||
'''利用AioHttp下载指定url的内容，并保存到缓存（./cache目录）。
|
||
|
||
:param url: 需要获取的url。
|
||
:returns: 文件的相对路径，若获取失败则返回False。'''
|
||
|
||
if not Config('allow_request_private_ip'):
|
||
private_ip_check(url)
|
||
|
||
try:
|
||
async with aiohttp.ClientSession() as session:
|
||
async with session.get(url) as resp:
|
||
res = await resp.read()
|
||
ftt = ft.match(res).extension
|
||
path = f'{random_cache_path()}.{ftt}'
|
||
async with async_open(path, 'wb+') as file:
|
||
await file.write(res)
|
||
return path
|
||
except Exception:
|
||
Logger.error(traceback.format_exc())
|
||
return False
|
||
|
||
|
||
__all__ = ['get_url', 'post_url', 'download_to_cache']
|