2022-07-01 14:28:39 +04:00
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"""Stores API connection session and sends requests"""
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2021-10-08 19:35:20 +04:00
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import re
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import random
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2022-03-30 19:40:58 +04:00
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import logging
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2021-10-14 17:56:01 +04:00
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from requests import Response
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2021-10-08 19:35:20 +04:00
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from cloudscraper import CloudScraper
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2022-05-18 18:33:21 +04:00
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from typing import Optional, Union
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2021-10-08 19:35:20 +04:00
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2021-11-01 18:04:19 +04:00
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from . import atjsparse
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2022-07-01 14:28:39 +04:00
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from .aterrors import TokenError
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from .aterrors import CloudflareError
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from .aterrors import AternosPermissionError
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2021-10-27 19:42:41 +03:00
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2022-07-01 14:28:39 +04:00
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REQUA = \
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'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 ' \
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'(KHTML, like Gecko) Chrome/99.0.4844.84 Safari/537.36 OPR/85.0.4341.47'
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2021-10-08 19:35:20 +04:00
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2022-06-23 15:13:56 +04:00
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2021-10-14 17:56:01 +04:00
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class AternosConnect:
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2021-10-08 19:35:20 +04:00
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2022-06-23 15:13:56 +04:00
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"""
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Class for sending API requests bypass Cloudflare
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and parsing responses"""
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2022-06-17 12:30:58 +04:00
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2022-06-23 15:13:56 +04:00
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def __init__(self) -> None:
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2021-11-01 18:04:19 +04:00
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2022-06-23 15:13:56 +04:00
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self.session = CloudScraper()
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self.atsession = ''
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2022-07-01 14:28:39 +04:00
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self.sec = ''
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self.token = ''
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2021-11-01 18:04:19 +04:00
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2022-06-23 15:13:56 +04:00
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def parse_token(self) -> str:
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2021-11-01 18:04:19 +04:00
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2022-06-23 15:13:56 +04:00
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"""Parses Aternos ajax token that
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is needed for most requests
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2022-06-17 12:30:58 +04:00
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2022-06-23 15:13:56 +04:00
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:raises RuntimeWarning: If the parser
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can not find <head> tag in HTML response
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:raises CredentialsError: If the parser
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is unable to extract ajax token in HTML
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:return: Aternos ajax token
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:rtype: str
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"""
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2022-06-17 12:30:58 +04:00
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2022-06-23 15:13:56 +04:00
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loginpage = self.request_cloudflare(
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2022-07-01 14:28:39 +04:00
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'https://aternos.org/go/', 'GET'
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2022-06-23 15:13:56 +04:00
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).content
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2021-11-01 18:04:19 +04:00
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2022-06-23 15:13:56 +04:00
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# Using the standard string methods
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# instead of the expensive xml parsing
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head = b'<head>'
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headtag = loginpage.find(head)
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headend = loginpage.find(b'</head>', headtag + len(head))
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# Some checks
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if headtag < 0 or headend < 0:
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pagehead = loginpage
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raise RuntimeWarning(
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'Unable to find <head> tag, parsing the whole page'
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)
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# Extracting <head> content
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headtag = headtag + len(head)
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pagehead = loginpage[headtag:headend]
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try:
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text = pagehead.decode('utf-8', 'replace')
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js_code = re.findall(r'\(\(\)(.*?)\)\(\);', text)
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token_func = js_code[1] if len(js_code) > 1 else js_code[0]
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2022-07-01 14:28:39 +04:00
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ctx = atjsparse.exec_js(token_func)
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2022-06-23 15:13:56 +04:00
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self.token = ctx.window['AJAX_TOKEN']
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2022-07-01 14:28:39 +04:00
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except (IndexError, TypeError) as err:
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raise TokenError(
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'Unable to parse TOKEN from the page'
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2022-07-01 14:28:39 +04:00
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) from err
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return self.token
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def generate_sec(self) -> str:
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"""Generates Aternos SEC token which
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is also needed for most API requests
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:return: Random SEC key:value string
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:rtype: str
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"""
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randkey = self.generate_aternos_rand()
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randval = self.generate_aternos_rand()
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self.sec = f'{randkey}:{randval}'
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self.session.cookies.set(
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f'ATERNOS_SEC_{randkey}', randval,
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domain='aternos.org'
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)
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return self.sec
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def generate_aternos_rand(self, randlen: int = 16) -> str:
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"""Generates a random string using
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Aternos algorithm from main.js file
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:param randlen: Random string length, defaults to 16
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:type randlen: int, optional
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:return: Random string for SEC token
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:rtype: str
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"""
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# a list with randlen+1 empty strings:
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# generate a string with spaces,
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# then split it by space
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2022-07-01 14:28:39 +04:00
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rand_arr = (' ' * (randlen + 1)).split(' ')
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2022-06-23 15:13:56 +04:00
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rand = random.random()
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rand_alphanum = self.convert_num(rand, 36) + ('0' * 17)
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2022-07-01 14:28:39 +04:00
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return rand_alphanum[:18].join(rand_arr)[:randlen]
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2022-06-23 15:13:56 +04:00
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def convert_num(
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self, num: Union[int, float, str],
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base: int, frombase: int = 10) -> str:
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"""Converts an integer to specified base
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:param num: Integer in any base to convert.
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If it is a float started with `0,`,
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zero and comma will be removed to get int
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:type num: Union[int,float,str]
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:param base: New base
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:type base: int
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:param frombase: Given number base, defaults to 10
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:type frombase: int, optional
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:return: Number converted to a specified base
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:rtype: str
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"""
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if isinstance(num, str):
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num = int(num, frombase)
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if isinstance(num, float):
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sliced = str(num)[2:]
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num = int(sliced)
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symbols = '0123456789abcdefghijklmnopqrstuvwxyz'
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basesym = symbols[:base]
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result = ''
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while num > 0:
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rem = num % base
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result = str(basesym[rem]) + result
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num //= base
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return result
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def request_cloudflare(
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self, url: str, method: str,
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params: Optional[dict] = None,
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data: Optional[dict] = None,
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headers: Optional[dict] = None,
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reqcookies: Optional[dict] = None,
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sendtoken: bool = False,
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redirect: bool = True,
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retry: int = 3) -> Response:
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"""Sends a request to Aternos API bypass Cloudflare
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:param url: Request URL
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:type url: str
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:param method: Request method, must be GET or POST
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:type method: str
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:param params: URL parameters, defaults to None
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:type params: Optional[dict], optional
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:param data: POST request data, if the method is GET,
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this dict will be combined with params, defaults to None
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:type data: Optional[dict], optional
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:param headers: Custom headers, defaults to None
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:type headers: Optional[dict], optional
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:param reqcookies: Cookies only for this request, defaults to None
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:type reqcookies: Optional[dict], optional
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:param sendtoken: If the ajax and SEC token
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should be sent, defaults to False
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:type sendtoken: bool, optional
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:param redirect: If requests lib should follow
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Location header in 3xx responses, defaults to True
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:type redirect: bool, optional
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:param retry: How many times parser must retry
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connection to API bypass Cloudflare, defaults to 3
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:type retry: int, optional
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:raises CloudflareError:
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When the parser has exceeded retries count
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:raises NotImplementedError:
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When the specified method is not GET or POST
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:return: API response
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:rtype: requests.Response
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"""
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if retry <= 0:
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raise CloudflareError('Unable to bypass Cloudflare protection')
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try:
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self.atsession = self.session.cookies['ATERNOS_SESSION']
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except KeyError:
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pass
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method = method or 'GET'
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method = method.upper().strip()
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if method not in ('GET', 'POST'):
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raise NotImplementedError('Only GET and POST are available')
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headers = headers or {}
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params = params or {}
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data = data or {}
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reqcookies = reqcookies or {}
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if sendtoken:
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params['TOKEN'] = self.token
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params['SEC'] = self.sec
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headers['X-Requested-With'] = 'XMLHttpRequest'
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# requests.cookies.CookieConflictError bugfix
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reqcookies['ATERNOS_SESSION'] = self.atsession
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del self.session.cookies['ATERNOS_SESSION']
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2022-07-01 14:28:39 +04:00
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logging.debug(f'Requesting({method}){url}')
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logging.debug(f'headers={headers}')
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logging.debug(f'params={params}')
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logging.debug(f'data={data}')
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logging.debug(f'req-cookies={reqcookies}')
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logging.debug(f'session-cookies={self.session.cookies}')
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2022-06-23 15:13:56 +04:00
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if method == 'POST':
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req = self.session.post(
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url, data=data, params=params,
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headers=headers, cookies=reqcookies,
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allow_redirects=redirect
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)
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else:
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req = self.session.get(
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url, params={**params, **data},
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headers=headers, cookies=reqcookies,
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allow_redirects=redirect
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)
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if '<title>Please Wait... | Cloudflare</title>' in req.text:
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logging.info('Retrying to bypass Cloudflare')
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2022-07-01 09:36:52 +04:00
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return self.request_cloudflare(
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url, method,
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params, data,
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headers, reqcookies,
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sendtoken, redirect,
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retry - 1
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)
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2022-07-01 09:36:52 +04:00
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logging.debug('AternosConnect received: ' + req.text[:65])
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2022-06-23 15:13:56 +04:00
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logging.info(
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f'{method} completed with {req.status_code} status'
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)
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2022-07-01 14:28:39 +04:00
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if req.status_code == 402:
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raise AternosPermissionError
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2022-07-01 14:28:39 +04:00
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req.raise_for_status()
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return req
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