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python-aternos/python_aternos/atconnect.py

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