mirror of
https://github.com/SickGear/SickGear.git
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209 lines
8.9 KiB
Python
209 lines
8.9 KiB
Python
from requests.exceptions import RequestException
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from requests.models import Response
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from requests.sessions import Session
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import logging
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import random
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import re
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import time
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from _23 import b64encodestring, urlparse
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DEFAULT_USER_AGENTS = [
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'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)'
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' Chrome/41.0.2228.0 Safari/537.36',
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'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko)'
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' Chrome/50.0.2661.102 Safari/537.36',
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'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)'
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' Chrome/52.0.2743.116 Safari/537.36',
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'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:46.0)'
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' Gecko/20100101 Firefox/46.0',
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'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:41.0)'
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' Gecko/20100101 Firefox/41.0'
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]
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class CloudflareError(RequestException):
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pass
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class CloudflareScraper(Session):
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def __init__(self, **kwargs):
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super(CloudflareScraper, self).__init__()
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if 'requests' in self.headers['User-Agent']:
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# Set a random User-Agent if no custom User-Agent has been set
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self.headers['User-Agent'] = random.choice(DEFAULT_USER_AGENTS)
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self.cf_ua = self.headers['User-Agent']
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self.default_delay = 8
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self.delay = kwargs.pop('delay', self.default_delay)
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self.start_time = None
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self.trust_env = False
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def request(self, method, url, *args, **kwargs):
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url_solver = kwargs.pop('url_solver', None)
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if not kwargs.pop('proxy_browser', None):
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resp = super(CloudflareScraper, self).request(method, url, *args, **kwargs)
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else:
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resp = self.get_content(method, url, url_solver,
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user_agent=self.headers.get('User-Agent'), proxy_browser=True, **kwargs)
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if (isinstance(resp, type(Response()))
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and resp.status_code in (503, 429, 403)):
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self.start_time = time.time()
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if (re.search('(?i)cloudflare', resp.headers.get('Server', ''))
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and b'jschl_vc' in resp.content
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and b'jschl_answer' in resp.content):
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resp = self.solve_cf_challenge(resp, url_solver, **kwargs)
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elif b'ddgu' in resp.content:
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resp = self.solve_ddg_challenge(resp, **kwargs)
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return resp
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def wait(self):
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delay = self.delay - (time.time() - self.start_time)
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time.sleep((0, delay)[0 < delay]) # required delay before solving the challenge
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def solve_ddg_challenge(self, resp, **original_kwargs):
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parsed_url = urlparse(resp.url)
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try:
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submit_url = parsed_url.scheme + ':' + re.findall('"frm"[^>]+?action="([^"]+)"', resp.text)[0]
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kwargs = {k: v for k, v in original_kwargs.items() if k not in ['hooks']}
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kwargs.setdefault('headers', {})
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kwargs.setdefault('data', dict(
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h=b64encodestring('%s://%s' % (parsed_url.scheme, parsed_url.hostname)),
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u=b64encodestring(parsed_url.path), p=b64encodestring(parsed_url.port or '')
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))
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self.wait()
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resp = self.request('POST', submit_url, **kwargs)
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except (BaseException, Exception):
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pass
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return resp
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def test_flaresolverr(self, url_solver):
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# test if FlareSolverr software is running
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response_test = super(CloudflareScraper, self).request('GET', url_solver)
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fs_ver = None
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if 200 == response_test.status_code and response_test.ok:
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json_data = response_test.json()
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if any([json_data.get('version')]):
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fs_ver = json_data.get('version')
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if None is fs_ver:
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raise ValueError('FlareSolverr software not found (is it running?)')
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return fs_ver
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def get_content(self, method, url, url_solver, user_agent, proxy_browser=False, **kwargs):
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url_solver = url_solver and re.sub(r'(/|v1)*$', '', url_solver) or 'http://localhost:8191'
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if not self.test_flaresolverr(url_solver):
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raise ValueError('No FlareSolverr software running %sat %s' % (('to solve Cloudflare challenge ',
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'')[proxy_browser], url_solver))
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try:
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params = {} if 'v1' not in self.test_flaresolverr(url_solver) else dict(userAgent=user_agent)
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params.update(dict(
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cmd='request.%s' % method.lower(), url=url,
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cookies=[{'name': cur_ckee.name, 'value': cur_ckee.value,
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'domain': cur_ckee.domain, 'path': cur_ckee.path} for cur_ckee in self.cookies]))
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response = super(CloudflareScraper, self).request('POST', '%s/v1' % url_solver, json=params)
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except(BaseException, Exception) as e:
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raise ValueError('FlareSolverr software unable to %s: %r' % (('solve Cloudflare anti-bot IUAM challenge',
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'fetch content')[proxy_browser], e))
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if None is not response:
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data_json = response.json()
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result = ({}, data_json)[isinstance(data_json, (dict, list))]
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if response.ok:
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if 'ok' == result.get('status'):
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self.cookies.clear()
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for cur_ckee in result.get('solution', {}).get('cookies', []):
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if cur_ckee.get('value') and cur_ckee.get('name') not in ('', None, '_gid', '_ga', '_gat'):
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self.cookies.set(
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cur_ckee['name'], cur_ckee['value'],
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rest={'httpOnly': cur_ckee.get('httpOnly'), 'session': cur_ckee.get('session')},
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**dict([(k, cur_ckee.get(k)) for k in ('expires', 'domain', 'path', 'secure')]))
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else:
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response = None
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elif 'error' == result.get('status'):
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raise ValueError('Failure with FlareSolverr: %s' % result.get('message', 'See the FlareSolver output'))
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return response
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def solve_cf_challenge(self, resp, url_solver, **original_kwargs):
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body = resp.text
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parsed_url = urlparse(resp.url)
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domain = parsed_url.netloc
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if '/cdn-cgi/l/chk_captcha' in body or 'cf_chl_captcha' in body:
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raise CloudflareError(
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'Cloudflare captcha presented for %s, safe to ignore as this shouldn\'t happen every time, ua: %s' %
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(domain, self.cf_ua), response=resp)
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final_response = self.get_content(
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'GET', (resp.request.url, '%s://%s/' % (parsed_url.scheme, domain))['POST' == resp.request.method],
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url_solver, user_agent=resp.request.headers.get('User-Agent'))
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if None is final_response:
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raise ValueError('Failed to validate Cloudflare anti-bot IUAM challenge')
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return final_response
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@classmethod
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def create_scraper(cls, sess=None, **kwargs):
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"""
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Convenience function for creating a ready-to-go CloudflareScraper object.
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"""
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scraper = cls(**kwargs)
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if sess:
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attrs = ['auth', 'cert', 'cookies', 'headers', 'hooks', 'params', 'proxies', 'data']
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for attr in attrs:
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val = getattr(sess, attr, None)
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if val:
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setattr(scraper, attr, val)
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return scraper
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# Functions for integrating cloudflare-scrape with other applications and scripts
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@classmethod
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def get_tokens(cls, url, user_agent=None, **kwargs):
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scraper = cls.create_scraper()
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if user_agent:
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scraper.headers['User-Agent'] = user_agent
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try:
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resp = scraper.get(url, **kwargs)
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resp.raise_for_status()
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except (BaseException, Exception):
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logging.error('[%s] returned an error. Could not collect tokens.' % url)
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raise
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domain = urlparse(resp.url).netloc
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for d in scraper.cookies.list_domains():
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if d.startswith('.') and d in ('.' + domain):
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cookie_domain = d
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break
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else:
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raise ValueError('Unable to find Cloudflare cookies.'
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' Does the site actually have Cloudflare IUAM (\'I\'m Under Attack Mode\') enabled?')
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return (
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{'__cfduid': scraper.cookies.get('__cfduid', '', domain=cookie_domain),
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'cf_clearance': scraper.cookies.get('cf_clearance', '', domain=cookie_domain)},
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scraper.headers['User-Agent'])
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@classmethod
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def get_cookie_string(cls, url, user_agent=None, **kwargs):
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"""
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Convenience function for building a Cookie HTTP header value.
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"""
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tokens, user_agent = cls.get_tokens(url, user_agent=user_agent, **kwargs)
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return '; '.join(['='.join(pair) for pair in tokens.items()]), user_agent
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create_scraper = CloudflareScraper.create_scraper
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get_tokens = CloudflareScraper.get_tokens
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get_cookie_string = CloudflareScraper.get_cookie_string
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