'.format(kID))
177 |
178 | kValues = {}
179 | for m in r.finditer(body):
180 | kValues[int(m.group('id'))] = m.group('jsfuck')
181 |
182 | jsfuckChallenge['k'] = kValues[kJSFUCK]
183 | except (AttributeError, IndexError):
184 | raise CloudflareSolveError('There was an issue extracting "kValues" from the Cloudflare challenge.')
185 |
186 | jsfuckChallenge['challenge'] = re.finditer(
187 | r'{}.*?([+\-*/])=(.*?);(?=a\.value|{})'.format(
188 | jsfuckChallenge['variable'],
189 | jsfuckChallenge['variable']
190 | ),
191 | jsfuckChallenge['challenge']
192 | )
193 |
194 | # ------------------------------------------------------------------------------- #
195 |
196 | if '/' in jsfuckChallenge['init']:
197 | val = jsfuckChallenge['init'].split('/')
198 | jschl_answer = jsfuckToNumber(val[0]) / float(jsfuckToNumber(val[1]))
199 | else:
200 | jschl_answer = jsfuckToNumber(jsfuckChallenge['init'])
201 |
202 | # ------------------------------------------------------------------------------- #
203 |
204 | for expressionMatch in jsfuckChallenge['challenge']:
205 | oper, expression = expressionMatch.groups()
206 |
207 | if '/' in expression:
208 | expression_value = divisorMath(expression, 'function(p)', domain)
209 | else:
210 | if 'Element' in expression:
211 | expression_value = divisorMath(jsfuckChallenge['k'], '"("+p+")")}', domain)
212 | else:
213 | expression_value = jsfuckToNumber(expression)
214 |
215 | jschl_answer = operators[oper](jschl_answer, expression_value)
216 |
217 | # ------------------------------------------------------------------------------- #
218 |
219 | # if not jsfuckChallenge['k'] and '+ t.length' in body:
220 | # jschl_answer += len(domain)
221 |
222 | # ------------------------------------------------------------------------------- #
223 |
224 | return '{0:.10f}'.format(jschl_answer)
225 |
226 | # ------------------------------------------------------------------------------- #
227 |
228 | return challengeSolve(body, domain)
229 |
230 | # ------------------------------------------------------------------------------- #
231 |
232 |
233 | ChallengeInterpreter()
234 |
--------------------------------------------------------------------------------
/lib/cloudscraper2/captcha/2captcha.py:
--------------------------------------------------------------------------------
1 | from __future__ import absolute_import
2 |
3 | import requests
4 | try:
5 | from urlparse import urlparse
6 | except ImportError:
7 | from urllib.parse import urlparse
8 |
9 | from ..exceptions import (
10 | CaptchaServiceUnavailable,
11 | CaptchaAPIError,
12 | CaptchaTimeout,
13 | CaptchaParameter,
14 | CaptchaBadJobID,
15 | CaptchaReportError
16 | )
17 |
18 | try:
19 | import polling2
20 | except ImportError:
21 | raise ImportError("Please install the python module 'polling2' via pip")
22 |
23 | from . import Captcha
24 |
25 |
26 | class captchaSolver(Captcha):
27 |
28 | def __init__(self):
29 | super(captchaSolver, self).__init__('2captcha')
30 | self.host = 'https://2captcha.com'
31 | self.session = requests.Session()
32 |
33 | # ------------------------------------------------------------------------------- #
34 |
35 | @staticmethod
36 | def checkErrorStatus(response, request_type):
37 | if response.status_code in [500, 502]:
38 | raise CaptchaServiceUnavailable('2Captcha: Server Side Error {}'.format(response.status_code))
39 |
40 | errors = {
41 | 'in.php': {
42 | "ERROR_WRONG_USER_KEY": "You've provided api_key parameter value is in incorrect format, it should contain 32 symbols.",
43 | "ERROR_KEY_DOES_NOT_EXIST": "The api_key you've provided does not exists.",
44 | "ERROR_ZERO_BALANCE": "You don't have sufficient funds on your account.",
45 | "ERROR_PAGEURL": "pageurl parameter is missing in your request.",
46 | "ERROR_NO_SLOT_AVAILABLE":
47 | "No Slots Available.\nYou can receive this error in two cases:\n"
48 | "1. If you solve ReCaptcha: the queue of your captchas that are not distributed to workers is too long. "
49 | "Queue limit changes dynamically and depends on total amount of captchas awaiting solution and usually it's between 50 and 100 captchas.\n"
50 | "2. If you solve Normal Captcha: your maximum rate for normal captchas is lower than current rate on the server."
51 | "You can change your maximum rate in your account's settings.",
52 | "ERROR_IP_NOT_ALLOWED": "The request is sent from the IP that is not on the list of your allowed IPs.",
53 | "IP_BANNED": "Your IP address is banned due to many frequent attempts to access the server using wrong authorization keys.",
54 | "ERROR_BAD_TOKEN_OR_PAGEURL":
55 | "You can get this error code when sending ReCaptcha V2. "
56 | "That happens if your request contains invalid pair of googlekey and pageurl. "
57 | "The common reason for that is that ReCaptcha is loaded inside an iframe hosted on another domain/subdomain.",
58 | "ERROR_GOOGLEKEY":
59 | "You can get this error code when sending ReCaptcha V2. "
60 | "That means that sitekey value provided in your request is incorrect: it's blank or malformed.",
61 | "MAX_USER_TURN": "You made more than 60 requests within 3 seconds.Your account is banned for 10 seconds. Ban will be lifted automatically."
62 | },
63 | 'res.php': {
64 | "ERROR_CAPTCHA_UNSOLVABLE":
65 | "We are unable to solve your captcha - three of our workers were unable solve it "
66 | "or we didn't get an answer within 90 seconds (300 seconds for ReCaptcha V2). "
67 | "We will not charge you for that request.",
68 | "ERROR_WRONG_USER_KEY": "You've provided api_key parameter value in incorrect format, it should contain 32 symbols.",
69 | "ERROR_KEY_DOES_NOT_EXIST": "The api_key you've provided does not exists.",
70 | "ERROR_WRONG_ID_FORMAT": "You've provided captcha ID in wrong format. The ID can contain numbers only.",
71 | "ERROR_WRONG_CAPTCHA_ID": "You've provided incorrect captcha ID.",
72 | "ERROR_BAD_DUPLICATES":
73 | "Error is returned when 100% accuracy feature is enabled. "
74 | "The error means that max numbers of tries is reached but min number of matches not found.",
75 | "REPORT_NOT_RECORDED": "Error is returned to your complain request if you already complained lots of correctly solved captchas.",
76 | "ERROR_IP_ADDRES":
77 | "You can receive this error code when registering a pingback (callback) IP or domain."
78 | "That happes if your request is coming from an IP address that doesn't match the IP address of your pingback IP or domain.",
79 | "ERROR_TOKEN_EXPIRED": "You can receive this error code when sending GeeTest. That error means that challenge value you provided is expired.",
80 | "ERROR_EMPTY_ACTION": "Action parameter is missing or no value is provided for action parameter."
81 | }
82 | }
83 |
84 | rPayload = response.json()
85 | if rPayload.get('status') == 0 and rPayload.get('request') in errors.get(request_type):
86 | raise CaptchaAPIError(
87 | '{} {}'.format(
88 | rPayload['request'],
89 | errors.get(request_type).get(rPayload['request'])
90 | )
91 | )
92 |
93 | # ------------------------------------------------------------------------------- #
94 |
95 | def reportJob(self, jobID):
96 | if not jobID:
97 | raise CaptchaBadJobID(
98 | "2Captcha: Error bad job id to request Captcha."
99 | )
100 |
101 | def _checkRequest(response):
102 | self.checkErrorStatus(response, 'res.php')
103 | if response.ok and response.json().get('status') == 1:
104 | return response
105 | return None
106 |
107 | response = polling2.poll(
108 | lambda: self.session.get(
109 | '{}/res.php'.format(self.host),
110 | params={
111 | 'key': self.api_key,
112 | 'action': 'reportbad',
113 | 'id': jobID,
114 | 'json': '1'
115 | },
116 | timeout=30
117 | ),
118 | check_success=_checkRequest,
119 | step=5,
120 | timeout=180
121 | )
122 |
123 | if response:
124 | return True
125 | else:
126 | raise CaptchaReportError(
127 | "2Captcha: Error - Failed to report bad Captcha solve."
128 | )
129 |
130 | # ------------------------------------------------------------------------------- #
131 |
132 | def requestJob(self, jobID):
133 | if not jobID:
134 | raise CaptchaBadJobID("2Captcha: Error bad job id to request Captcha.")
135 |
136 | def _checkRequest(response):
137 | self.checkErrorStatus(response, 'res.php')
138 | if response.ok and response.json().get('status') == 1:
139 | return response
140 | return None
141 |
142 | response = polling2.poll(
143 | lambda: self.session.get(
144 | '{}/res.php'.format(self.host),
145 | params={
146 | 'key': self.api_key,
147 | 'action': 'get',
148 | 'id': jobID,
149 | 'json': '1'
150 | },
151 | timeout=30
152 | ),
153 | check_success=_checkRequest,
154 | step=5,
155 | timeout=180
156 | )
157 |
158 | if response:
159 | return response.json().get('request')
160 | else:
161 | raise CaptchaTimeout(
162 | "2Captcha: Error failed to solve Captcha."
163 | )
164 |
165 | # ------------------------------------------------------------------------------- #
166 |
167 | def requestSolve(self, captchaType, url, siteKey):
168 | def _checkRequest(response):
169 | self.checkErrorStatus(response, 'in.php')
170 | if response.ok and response.json().get("status") == 1 and response.json().get('request'):
171 | return response
172 | return None
173 |
174 | data = {
175 | 'key': self.api_key,
176 | 'pageurl': url,
177 | 'json': 1,
178 | 'soft_id': 2905
179 | }
180 |
181 | data.update(
182 | {
183 | 'method': 'userrcaptcha',
184 | 'googlekey': siteKey
185 | } if captchaType == 'reCaptcha' else {
186 | 'method': 'hcaptcha',
187 | 'sitekey': siteKey
188 | }
189 | )
190 |
191 | if self.proxy:
192 | data.update(
193 | {
194 | 'proxy': self.proxy,
195 | 'proxytype': self.proxyType
196 | }
197 | )
198 |
199 | response = polling2.poll(
200 | lambda: self.session.post(
201 | '{}/in.php'.format(self.host),
202 | data=data,
203 | allow_redirects=False,
204 | timeout=30
205 | ),
206 | check_success=_checkRequest,
207 | step=5,
208 | timeout=180
209 | )
210 |
211 | if response:
212 | return response.json().get('request')
213 | else:
214 | raise CaptchaBadJobID(
215 | '2Captcha: Error no job id was returned.'
216 | )
217 |
218 | # ------------------------------------------------------------------------------- #
219 |
220 | def getCaptchaAnswer(self, captchaType, url, siteKey, captchaParams):
221 | jobID = None
222 |
223 | if not captchaParams.get('api_key'):
224 | raise CaptchaParameter(
225 | "2Captcha: Missing api_key parameter."
226 | )
227 |
228 | self.api_key = captchaParams.get('api_key')
229 |
230 | if captchaParams.get('proxy') and not captchaParams.get('no_proxy'):
231 | hostParsed = urlparse(captchaParams.get('proxy', {}).get('https'))
232 |
233 | if not hostParsed.scheme:
234 | raise CaptchaParameter('Cannot parse proxy correctly, bad scheme')
235 |
236 | if not hostParsed.netloc:
237 | raise CaptchaParameter('Cannot parse proxy correctly, bad netloc')
238 |
239 | self.proxyType = hostParsed.scheme
240 | self.proxy = hostParsed.netloc
241 | else:
242 | self.proxy = None
243 |
244 | try:
245 | jobID = self.requestSolve(captchaType, url, siteKey)
246 | return self.requestJob(jobID)
247 | except polling2.TimeoutException:
248 | try:
249 | if jobID:
250 | self.reportJob(jobID)
251 | except polling2.TimeoutException:
252 | raise CaptchaTimeout(
253 | "2Captcha: Captcha solve took to long and also failed reporting the job the job id {}.".format(jobID)
254 | )
255 |
256 | raise CaptchaTimeout(
257 | "2Captcha: Captcha solve took to long to execute job id {}, aborting.".format(jobID)
258 | )
259 |
260 |
261 | # ------------------------------------------------------------------------------- #
262 |
263 | captchaSolver()
264 |
--------------------------------------------------------------------------------
/lib/cloudscraper2/__init__.py:
--------------------------------------------------------------------------------
1 | # ------------------------------------------------------------------------------- #
2 |
3 | import logging
4 | import requests
5 | import sys
6 | import ssl
7 |
8 | from requests.adapters import HTTPAdapter
9 | from requests.sessions import Session
10 | try:
11 | from requests_toolbelt.utils import dump
12 | except ImportError:
13 | pass
14 |
15 | # ------------------------------------------------------------------------------- #
16 |
17 | try:
18 | import brotli
19 | except ImportError:
20 | pass
21 |
22 | try:
23 | import copyreg
24 | except ImportError:
25 | import copy_reg as copyreg
26 |
27 | try:
28 | from urlparse import urlparse
29 | except ImportError:
30 | from urllib.parse import urlparse
31 |
32 | # ------------------------------------------------------------------------------- #
33 |
34 | from .exceptions import (
35 | CloudflareLoopProtection,
36 | CloudflareIUAMError
37 | )
38 |
39 | from .cloudflare import Cloudflare
40 | from .user_agent import User_Agent
41 |
42 | # ------------------------------------------------------------------------------- #
43 |
44 | __version__ = '1.2.60'
45 |
46 | # ------------------------------------------------------------------------------- #
47 |
48 |
49 | class CipherSuiteAdapter(HTTPAdapter):
50 |
51 | __attrs__ = [
52 | 'ssl_context',
53 | 'max_retries',
54 | 'config',
55 | '_pool_connections',
56 | '_pool_maxsize',
57 | '_pool_block',
58 | 'source_address'
59 | ]
60 |
61 | def __init__(self, *args, **kwargs):
62 | self.ssl_context = kwargs.pop('ssl_context', None)
63 | self.cipherSuite = kwargs.pop('cipherSuite', None)
64 | self.source_address = kwargs.pop('source_address', None)
65 | self.server_hostname = kwargs.pop('server_hostname', None)
66 | self.ecdhCurve = kwargs.pop('ecdhCurve', 'prime256v1')
67 |
68 | if self.source_address:
69 | if isinstance(self.source_address, str):
70 | self.source_address = (self.source_address, 0)
71 |
72 | if not isinstance(self.source_address, tuple):
73 | raise TypeError(
74 | "source_address must be IP address string or (ip, port) tuple"
75 | )
76 |
77 | if not self.ssl_context:
78 | self.ssl_context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
79 |
80 | self.ssl_context.orig_wrap_socket = self.ssl_context.wrap_socket
81 | self.ssl_context.wrap_socket = self.wrap_socket
82 |
83 | if self.server_hostname:
84 | self.ssl_context.server_hostname = self.server_hostname
85 |
86 | self.ssl_context.set_ciphers(self.cipherSuite)
87 | self.ssl_context.set_ecdh_curve(self.ecdhCurve)
88 | self.ssl_context.options |= (ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3 | ssl.OP_NO_TLSv1 | ssl.OP_NO_TLSv1_1)
89 |
90 | super(CipherSuiteAdapter, self).__init__(**kwargs)
91 |
92 | # ------------------------------------------------------------------------------- #
93 |
94 | def wrap_socket(self, *args, **kwargs):
95 | if hasattr(self.ssl_context, 'server_hostname') and self.ssl_context.server_hostname:
96 | kwargs['server_hostname'] = self.ssl_context.server_hostname
97 | self.ssl_context.check_hostname = False
98 | else:
99 | self.ssl_context.check_hostname = True
100 |
101 | return self.ssl_context.orig_wrap_socket(*args, **kwargs)
102 |
103 | # ------------------------------------------------------------------------------- #
104 |
105 | def init_poolmanager(self, *args, **kwargs):
106 | kwargs['ssl_context'] = self.ssl_context
107 | kwargs['source_address'] = self.source_address
108 | return super(CipherSuiteAdapter, self).init_poolmanager(*args, **kwargs)
109 |
110 | # ------------------------------------------------------------------------------- #
111 |
112 | def proxy_manager_for(self, *args, **kwargs):
113 | kwargs['ssl_context'] = self.ssl_context
114 | kwargs['source_address'] = self.source_address
115 | return super(CipherSuiteAdapter, self).proxy_manager_for(*args, **kwargs)
116 |
117 | # ------------------------------------------------------------------------------- #
118 |
119 |
120 | class CloudScraper(Session):
121 |
122 | def __init__(self, *args, **kwargs):
123 | self.debug = kwargs.pop('debug', False)
124 |
125 | self.disableCloudflareV1 = kwargs.pop('disableCloudflareV1', False)
126 | self.delay = kwargs.pop('delay', None)
127 | self.captcha = kwargs.pop('captcha', {})
128 | self.doubleDown = kwargs.pop('doubleDown', True)
129 | self.interpreter = kwargs.pop('interpreter', 'native')
130 |
131 | self.requestPreHook = kwargs.pop('requestPreHook', None)
132 | self.requestPostHook = kwargs.pop('requestPostHook', None)
133 |
134 | self.cipherSuite = kwargs.pop('cipherSuite', None)
135 | self.ecdhCurve = kwargs.pop('ecdhCurve', 'prime256v1')
136 | self.source_address = kwargs.pop('source_address', None)
137 | self.server_hostname = kwargs.pop('server_hostname', None)
138 | self.ssl_context = kwargs.pop('ssl_context', None)
139 |
140 | self.allow_brotli = kwargs.pop(
141 | 'allow_brotli',
142 | True if 'brotli' in sys.modules.keys() else False
143 | )
144 |
145 | self.user_agent = User_Agent(
146 | allow_brotli=self.allow_brotli,
147 | browser=kwargs.pop('browser', None)
148 | )
149 |
150 | self._solveDepthCnt = 0
151 | self.solveDepth = kwargs.pop('solveDepth', 3)
152 |
153 | super(CloudScraper, self).__init__(*args, **kwargs)
154 |
155 | # pylint: disable=E0203
156 | if 'requests' in self.headers['User-Agent']:
157 | # ------------------------------------------------------------------------------- #
158 | # Set a random User-Agent if no custom User-Agent has been set
159 | # ------------------------------------------------------------------------------- #
160 | self.headers = self.user_agent.headers
161 | if not self.cipherSuite:
162 | self.cipherSuite = self.user_agent.cipherSuite
163 |
164 | if isinstance(self.cipherSuite, list):
165 | self.cipherSuite = ':'.join(self.cipherSuite)
166 |
167 | self.mount(
168 | 'https://',
169 | CipherSuiteAdapter(
170 | cipherSuite=self.cipherSuite,
171 | ecdhCurve=self.ecdhCurve,
172 | server_hostname=self.server_hostname,
173 | source_address=self.source_address,
174 | ssl_context=self.ssl_context
175 | )
176 | )
177 |
178 | # purely to allow us to pickle dump
179 | copyreg.pickle(ssl.SSLContext, lambda obj: (obj.__class__, (obj.protocol,)))
180 |
181 | # ------------------------------------------------------------------------------- #
182 | # Allow us to pickle our session back with all variables
183 | # ------------------------------------------------------------------------------- #
184 |
185 | def __getstate__(self):
186 | return self.__dict__
187 |
188 | # ------------------------------------------------------------------------------- #
189 | # Allow replacing actual web request call via subclassing
190 | # ------------------------------------------------------------------------------- #
191 |
192 | def perform_request(self, method, url, *args, **kwargs):
193 | return super(CloudScraper, self).request(method, url, *args, **kwargs)
194 |
195 | # ------------------------------------------------------------------------------- #
196 | # Raise an Exception with no stacktrace and reset depth counter.
197 | # ------------------------------------------------------------------------------- #
198 |
199 | def simpleException(self, exception, msg):
200 | self._solveDepthCnt = 0
201 | sys.tracebacklimit = 0
202 | raise exception(msg)
203 |
204 | # ------------------------------------------------------------------------------- #
205 | # debug the request via the response
206 | # ------------------------------------------------------------------------------- #
207 |
208 | @staticmethod
209 | def debugRequest(req):
210 | try:
211 | print(dump.dump_all(req).decode('utf-8', errors='backslashreplace'))
212 | except ValueError as e:
213 | print("Debug Error: {}".format(getattr(e, 'message', e)))
214 |
215 | # ------------------------------------------------------------------------------- #
216 | # Decode Brotli on older versions of urllib3 manually
217 | # ------------------------------------------------------------------------------- #
218 |
219 | def decodeBrotli(self, resp):
220 | if requests.packages.urllib3.__version__ < '1.25.1' and resp.headers.get('Content-Encoding') == 'br':
221 | if self.allow_brotli and resp._content:
222 | resp._content = brotli.decompress(resp.content)
223 | else:
224 | logging.warning(
225 | 'You\'re running urllib3 {}, Brotli content detected, '
226 | 'Which requires manual decompression, '
227 | 'But option allow_brotli is set to False, '
228 | 'We will not continue to decompress.'.format(requests.packages.urllib3.__version__)
229 | )
230 |
231 | return resp
232 |
233 | # ------------------------------------------------------------------------------- #
234 | # Our hijacker request function
235 | # ------------------------------------------------------------------------------- #
236 |
237 | def request(self, method, url, *args, **kwargs):
238 | # pylint: disable=E0203
239 | if kwargs.get('proxies') and kwargs.get('proxies') != self.proxies:
240 | self.proxies = kwargs.get('proxies')
241 |
242 | # ------------------------------------------------------------------------------- #
243 | # Pre-Hook the request via user defined function.
244 | # ------------------------------------------------------------------------------- #
245 |
246 | if self.requestPreHook:
247 | (method, url, args, kwargs) = self.requestPreHook(
248 | self,
249 | method,
250 | url,
251 | *args,
252 | **kwargs
253 | )
254 |
255 | # ------------------------------------------------------------------------------- #
256 | # Make the request via requests.
257 | # ------------------------------------------------------------------------------- #
258 |
259 | response = self.decodeBrotli(
260 | self.perform_request(method, url, *args, **kwargs)
261 | )
262 |
263 | # ------------------------------------------------------------------------------- #
264 | # Debug the request via the Response object.
265 | # ------------------------------------------------------------------------------- #
266 |
267 | if self.debug:
268 | self.debugRequest(response)
269 |
270 | # ------------------------------------------------------------------------------- #
271 | # Post-Hook the request aka Post-Hook the response via user defined function.
272 | # ------------------------------------------------------------------------------- #
273 |
274 | if self.requestPostHook:
275 | newResponse = self.requestPostHook(self, response)
276 |
277 | if response != newResponse: # Give me walrus in 3.7!!!
278 | response = newResponse
279 | if self.debug:
280 | print('==== requestPostHook Debug ====')
281 | self.debugRequest(response)
282 |
283 | # ------------------------------------------------------------------------------- #
284 |
285 | if not self.disableCloudflareV1:
286 | cloudflareV1 = Cloudflare(self)
287 |
288 | # ------------------------------------------------------------------------------- #
289 | # Check if Cloudflare v1 anti-bot is on
290 | # ------------------------------------------------------------------------------- #
291 |
292 | if cloudflareV1.is_Challenge_Request(response):
293 | # ------------------------------------------------------------------------------- #
294 | # Try to solve the challenge and send it back
295 | # ------------------------------------------------------------------------------- #
296 |
297 | if self._solveDepthCnt >= self.solveDepth:
298 | _ = self._solveDepthCnt
299 | self.simpleException(
300 | CloudflareLoopProtection,
301 | "!!Loop Protection!! We have tried to solve {} time(s) in a row.".format(_)
302 | )
303 |
304 | self._solveDepthCnt += 1
305 |
306 | response = cloudflareV1.Challenge_Response(response, **kwargs)
307 | else:
308 | if not response.is_redirect and response.status_code not in [429, 503]:
309 | self._solveDepthCnt = 0
310 |
311 | return response
312 |
313 | # ------------------------------------------------------------------------------- #
314 |
315 | @classmethod
316 | def create_scraper(cls, sess=None, **kwargs):
317 | """
318 | Convenience function for creating a ready-to-go CloudScraper object.
319 | """
320 | scraper = cls(**kwargs)
321 |
322 | if sess:
323 | for attr in ['auth', 'cert', 'cookies', 'headers', 'hooks', 'params', 'proxies', 'data']:
324 | val = getattr(sess, attr, None)
325 | if val is not None:
326 | setattr(scraper, attr, val)
327 |
328 | return scraper
329 |
330 | # ------------------------------------------------------------------------------- #
331 | # Functions for integrating cloudscraper with other applications and scripts
332 | # ------------------------------------------------------------------------------- #
333 |
334 | @classmethod
335 | def get_tokens(cls, url, **kwargs):
336 | scraper = cls.create_scraper(
337 | **{
338 | field: kwargs.pop(field, None) for field in [
339 | 'allow_brotli',
340 | 'browser',
341 | 'debug',
342 | 'delay',
343 | 'doubleDown',
344 | 'captcha',
345 | 'interpreter',
346 | 'source_address',
347 | 'requestPreHook',
348 | 'requestPostHook'
349 | ] if field in kwargs
350 | }
351 | )
352 |
353 | try:
354 | resp = scraper.get(url, **kwargs)
355 | resp.raise_for_status()
356 | except Exception:
357 | logging.error('"{}" returned an error. Could not collect tokens.'.format(url))
358 | raise
359 |
360 | domain = urlparse(resp.url).netloc
361 | # noinspection PyUnusedLocal
362 | cookie_domain = None
363 |
364 | for d in scraper.cookies.list_domains():
365 | if d.startswith('.') and d in ('.{}'.format(domain)):
366 | cookie_domain = d
367 | break
368 | else:
369 | cls.simpleException(
370 | cls,
371 | CloudflareIUAMError,
372 | "Unable to find Cloudflare cookies. Does the site actually "
373 | "have Cloudflare IUAM (I'm Under Attack Mode) enabled?"
374 | )
375 |
376 | return (
377 | {
378 | 'cf_clearance': scraper.cookies.get('cf_clearance', '', domain=cookie_domain)
379 | },
380 | scraper.headers['User-Agent']
381 | )
382 |
383 | # ------------------------------------------------------------------------------- #
384 |
385 | @classmethod
386 | def get_cookie_string(cls, url, **kwargs):
387 | """
388 | Convenience function for building a Cookie HTTP header value.
389 | """
390 | tokens, user_agent = cls.get_tokens(url, **kwargs)
391 | return '; '.join('='.join(pair) for pair in tokens.items()), user_agent
392 |
393 |
394 | # ------------------------------------------------------------------------------- #
395 |
396 | if ssl.OPENSSL_VERSION_INFO < (1, 1, 1):
397 | print(
398 | "DEPRECATION: The OpenSSL being used by this python install ({}) does not meet the minimum supported "
399 | "version (>= OpenSSL 1.1.1) in order to support TLS 1.3 required by Cloudflare, "
400 | "You may encounter an unexpected Captcha or cloudflare 1020 blocks.".format(
401 | ssl.OPENSSL_VERSION
402 | )
403 | )
404 |
405 | # ------------------------------------------------------------------------------- #
406 |
407 | create_scraper = CloudScraper.create_scraper
408 | get_tokens = CloudScraper.get_tokens
409 | get_cookie_string = CloudScraper.get_cookie_string
410 |
--------------------------------------------------------------------------------
/lib/cloudscraper2/cloudflare.py:
--------------------------------------------------------------------------------
1 | # Cloudflare V1
2 |
3 | import re
4 | import sys
5 | import time
6 |
7 | from copy import deepcopy
8 | from collections import OrderedDict
9 |
10 | # ------------------------------------------------------------------------------- #
11 |
12 | try:
13 | from HTMLParser import HTMLParser
14 | except ImportError:
15 | if sys.version_info >= (3, 4):
16 | import html
17 | else:
18 | from html.parser import HTMLParser
19 |
20 | try:
21 | from urlparse import urlparse, urljoin
22 | except ImportError:
23 | from urllib.parse import urlparse, urljoin
24 |
25 | # ------------------------------------------------------------------------------- #
26 |
27 | from .exceptions import (
28 | CloudflareCode1020,
29 | CloudflareIUAMError,
30 | CloudflareSolveError,
31 | CloudflareChallengeError,
32 | CloudflareCaptchaError,
33 | CloudflareCaptchaProvider
34 | )
35 |
36 | # ------------------------------------------------------------------------------- #
37 |
38 | from .captcha import Captcha
39 | from .interpreters import JavaScriptInterpreter
40 |
41 | # ------------------------------------------------------------------------------- #
42 |
43 |
44 | class Cloudflare():
45 |
46 | def __init__(self, cloudscraper):
47 | self.cloudscraper = cloudscraper
48 |
49 | # ------------------------------------------------------------------------------- #
50 | # Unescape / decode html entities
51 | # ------------------------------------------------------------------------------- #
52 |
53 | @staticmethod
54 | def unescape(html_text):
55 | if sys.version_info >= (3, 0):
56 | if sys.version_info >= (3, 4):
57 | return html.unescape(html_text)
58 |
59 | return HTMLParser().unescape(html_text)
60 |
61 | return HTMLParser().unescape(html_text)
62 |
63 | # ------------------------------------------------------------------------------- #
64 | # check if the response contains a valid Cloudflare challenge
65 | # ------------------------------------------------------------------------------- #
66 |
67 | @staticmethod
68 | def is_IUAM_Challenge(resp):
69 | try:
70 | return (
71 | resp.headers.get('Server', '').startswith('cloudflare')
72 | and resp.status_code in [429, 503]
73 | and re.search(
74 | r')',
208 | body,
209 | re.M | re.DOTALL
210 | ).groupdict()
211 |
212 | if not all(key in formPayload for key in ['form', 'challengeUUID']):
213 | self.cloudscraper.simpleException(
214 | CloudflareIUAMError,
215 | "Cloudflare IUAM detected, unfortunately we can't extract the parameters correctly."
216 | )
217 |
218 | payload = OrderedDict()
219 | for challengeParam in re.findall(r'^\s*', formPayload['form'], re.M | re.S):
220 | inputPayload = dict(re.findall(r'(\S+)="(\S+)"', challengeParam))
221 | if inputPayload.get('name') in ['r', 'jschl_vc', 'pass']:
222 | payload.update({inputPayload['name']: inputPayload['value']})
223 |
224 | except AttributeError:
225 | self.cloudscraper.simpleException(
226 | CloudflareIUAMError,
227 | "Cloudflare IUAM detected, unfortunately we can't extract the parameters correctly."
228 | )
229 |
230 | hostParsed = urlparse(url)
231 |
232 | try:
233 | payload['jschl_answer'] = JavaScriptInterpreter.dynamicImport(
234 | interpreter
235 | ).solveChallenge(body, hostParsed.netloc)
236 | except Exception as e:
237 | self.cloudscraper.simpleException(
238 | CloudflareIUAMError,
239 | "Unable to parse Cloudflare anti-bots page: {}".format(getattr(e, 'message', e))
240 | )
241 |
242 | return {
243 | 'url': '{}://{}{}'.format(
244 | hostParsed.scheme,
245 | hostParsed.netloc,
246 | self.unescape(formPayload['challengeUUID'])
247 | ),
248 | 'data': payload
249 | }
250 |
251 | # ------------------------------------------------------------------------------- #
252 | # Try to solve the Captcha challenge via 3rd party.
253 | # ------------------------------------------------------------------------------- #
254 |
255 | def captcha_Challenge_Response(self, provider, provider_params, body, url):
256 | try:
257 | formPayload = re.search(
258 | r')',
260 | body,
261 | re.M | re.DOTALL
262 | ).groupdict()
263 |
264 | if not all(key in formPayload for key in ['form', 'challengeUUID']):
265 | self.cloudscraper.simpleException(
266 | CloudflareCaptchaError,
267 | "Cloudflare Captcha detected, unfortunately we can't extract the parameters correctly."
268 | )
269 |
270 | payload = OrderedDict(
271 | re.findall(
272 | r'(name="r"\svalue|data-ray|data-sitekey|name="cf_captcha_kind"\svalue)="(.*?)"',
273 | formPayload['form']
274 | )
275 | )
276 |
277 | captchaType = 'reCaptcha' if payload['name="cf_captcha_kind" value'] == 're' else 'hCaptcha'
278 |
279 | except (AttributeError, KeyError):
280 | self.cloudscraper.simpleException(
281 | CloudflareCaptchaError,
282 | "Cloudflare Captcha detected, unfortunately we can't extract the parameters correctly."
283 | )
284 |
285 | # ------------------------------------------------------------------------------- #
286 | # Pass proxy parameter to provider to solve captcha.
287 | # ------------------------------------------------------------------------------- #
288 |
289 | if self.cloudscraper.proxies and self.cloudscraper.proxies != self.cloudscraper.captcha.get('proxy'):
290 | self.cloudscraper.captcha['proxy'] = self.proxies
291 |
292 | # ------------------------------------------------------------------------------- #
293 | # Pass User-Agent if provider supports it to solve captcha.
294 | # ------------------------------------------------------------------------------- #
295 |
296 | self.cloudscraper.captcha['User-Agent'] = self.cloudscraper.headers['User-Agent']
297 |
298 | # ------------------------------------------------------------------------------- #
299 | # Submit job to provider to request captcha solve.
300 | # ------------------------------------------------------------------------------- #
301 |
302 | captchaResponse = Captcha.dynamicImport(
303 | provider.lower()
304 | ).solveCaptcha(
305 | captchaType,
306 | url,
307 | payload['data-sitekey'],
308 | provider_params
309 | )
310 |
311 | # ------------------------------------------------------------------------------- #
312 | # Parse and handle the response of solved captcha.
313 | # ------------------------------------------------------------------------------- #
314 |
315 | dataPayload = OrderedDict([
316 | ('r', payload.get('name="r" value', '')),
317 | ('cf_captcha_kind', payload['name="cf_captcha_kind" value']),
318 | ('id', payload.get('data-ray')),
319 | ('g-recaptcha-response', captchaResponse)
320 | ])
321 |
322 | if captchaType == 'hCaptcha':
323 | dataPayload.update({'h-captcha-response': captchaResponse})
324 |
325 | hostParsed = urlparse(url)
326 |
327 | return {
328 | 'url': '{}://{}{}'.format(
329 | hostParsed.scheme,
330 | hostParsed.netloc,
331 | self.unescape(formPayload['challengeUUID'])
332 | ),
333 | 'data': dataPayload
334 | }
335 |
336 | # ------------------------------------------------------------------------------- #
337 | # Attempt to handle and send the challenge response back to cloudflare
338 | # ------------------------------------------------------------------------------- #
339 |
340 | def Challenge_Response(self, resp, **kwargs):
341 | if self.is_Captcha_Challenge(resp):
342 | # ------------------------------------------------------------------------------- #
343 | # double down on the request as some websites are only checking
344 | # if cfuid is populated before issuing Captcha.
345 | # ------------------------------------------------------------------------------- #
346 |
347 | if self.cloudscraper.doubleDown:
348 | resp = self.cloudscraper.decodeBrotli(
349 | self.cloudscraper.perform_request(resp.request.method, resp.url, **kwargs)
350 | )
351 |
352 | if not self.is_Captcha_Challenge(resp):
353 | return resp
354 |
355 | # ------------------------------------------------------------------------------- #
356 | # if no captcha provider raise a runtime error.
357 | # ------------------------------------------------------------------------------- #
358 |
359 | if (
360 | not self.cloudscraper.captcha
361 | or not isinstance(self.cloudscraper.captcha, dict)
362 | or not self.cloudscraper.captcha.get('provider')
363 | ):
364 | self.cloudscraper.simpleException(
365 | CloudflareCaptchaProvider,
366 | "Cloudflare Captcha detected, unfortunately you haven't loaded an anti Captcha provider "
367 | "correctly via the 'captcha' parameter."
368 | )
369 |
370 | # ------------------------------------------------------------------------------- #
371 | # if provider is return_response, return the response without doing anything.
372 | # ------------------------------------------------------------------------------- #
373 |
374 | if self.cloudscraper.captcha.get('provider') == 'return_response':
375 | return resp
376 |
377 | # ------------------------------------------------------------------------------- #
378 | # Submit request to parser wrapper to solve captcha
379 | # ------------------------------------------------------------------------------- #
380 |
381 | submit_url = self.captcha_Challenge_Response(
382 | self.cloudscraper.captcha.get('provider'),
383 | self.cloudscraper.captcha,
384 | resp.text,
385 | resp.url
386 | )
387 | else:
388 | # ------------------------------------------------------------------------------- #
389 | # Cloudflare requires a delay before solving the challenge
390 | # ------------------------------------------------------------------------------- #
391 |
392 | if not self.cloudscraper.delay:
393 | try:
394 | delay = float(
395 | re.search(
396 | r'submit\(\);\r?\n\s*},\s*([0-9]+)',
397 | resp.text
398 | ).group(1)
399 | ) / float(1000)
400 | if isinstance(delay, (int, float)):
401 | self.cloudscraper.delay = delay
402 | except (AttributeError, ValueError):
403 | self.cloudscraper.simpleException(
404 | CloudflareIUAMError,
405 | "Cloudflare IUAM possibility malformed, issue extracing delay value."
406 | )
407 |
408 | time.sleep(self.cloudscraper.delay)
409 |
410 | # ------------------------------------------------------------------------------- #
411 |
412 | submit_url = self.IUAM_Challenge_Response(
413 | resp.text,
414 | resp.url,
415 | self.cloudscraper.interpreter
416 | )
417 |
418 | # ------------------------------------------------------------------------------- #
419 | # Send the Challenge Response back to Cloudflare
420 | # ------------------------------------------------------------------------------- #
421 |
422 | if submit_url:
423 |
424 | def updateAttr(obj, name, newValue):
425 | try:
426 | obj[name].update(newValue)
427 | return obj[name]
428 | except (AttributeError, KeyError):
429 | obj[name] = {}
430 | obj[name].update(newValue)
431 | return obj[name]
432 |
433 | cloudflare_kwargs = deepcopy(kwargs)
434 | cloudflare_kwargs['allow_redirects'] = False
435 | cloudflare_kwargs['data'] = updateAttr(
436 | cloudflare_kwargs,
437 | 'data',
438 | submit_url['data']
439 | )
440 |
441 | urlParsed = urlparse(resp.url)
442 | cloudflare_kwargs['headers'] = updateAttr(
443 | cloudflare_kwargs,
444 | 'headers',
445 | {
446 | 'Origin': '{}://{}'.format(urlParsed.scheme, urlParsed.netloc),
447 | 'Referer': resp.url
448 | }
449 | )
450 |
451 | challengeSubmitResponse = self.cloudscraper.request(
452 | 'POST',
453 | submit_url['url'],
454 | **cloudflare_kwargs
455 | )
456 |
457 | if challengeSubmitResponse.status_code == 400:
458 | self.cloudscraper.simpleException(
459 | CloudflareSolveError,
460 | 'Invalid challenge answer detected, Cloudflare broken?'
461 | )
462 |
463 | # ------------------------------------------------------------------------------- #
464 | # Return response if Cloudflare is doing content pass through instead of 3xx
465 | # else request with redirect URL also handle protocol scheme change http -> https
466 | # ------------------------------------------------------------------------------- #
467 |
468 | if not challengeSubmitResponse.is_redirect:
469 | return challengeSubmitResponse
470 |
471 | else:
472 | cloudflare_kwargs = deepcopy(kwargs)
473 | cloudflare_kwargs['headers'] = updateAttr(
474 | cloudflare_kwargs,
475 | 'headers',
476 | {'Referer': challengeSubmitResponse.url}
477 | )
478 |
479 | if not urlparse(challengeSubmitResponse.headers['Location']).netloc:
480 | redirect_location = urljoin(
481 | challengeSubmitResponse.url,
482 | challengeSubmitResponse.headers['Location']
483 | )
484 | else:
485 | redirect_location = challengeSubmitResponse.headers['Location']
486 |
487 | return self.cloudscraper.request(
488 | resp.request.method,
489 | redirect_location,
490 | **cloudflare_kwargs
491 | )
492 |
493 | # ------------------------------------------------------------------------------- #
494 | # We shouldn't be here...
495 | # Re-request the original query and/or process again....
496 | # ------------------------------------------------------------------------------- #
497 |
498 | return self.cloudscraper.request(resp.request.method, resp.url, **kwargs)
499 |
500 | # ------------------------------------------------------------------------------- #
501 |
--------------------------------------------------------------------------------
/license:
--------------------------------------------------------------------------------
1 | NU GENERAL PUBLIC LICENSE
2 | Version 3, 29 June 2007
3 |
4 | Copyright (C) 2007 Free Software Foundation, Inc.
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303 | typical or common use of that class of product, regardless of the status
304 | of the particular user or of the way in which the particular user
305 | actually uses, or expects or is expected to use, the product. A product
306 | is a consumer product regardless of whether the product has substantial
307 | commercial, industrial or non-consumer uses, unless such uses represent
308 | the only significant mode of use of the product.
309 |
310 | "Installation Information" for a User Product means any methods,
311 | procedures, authorization keys, or other information required to install
312 | and execute modified versions of a covered work in that User Product from
313 | a modified version of its Corresponding Source. The information must
314 | suffice to ensure that the continued functioning of the modified object
315 | code is in no case prevented or interfered with solely because
316 | modification has been made.
317 |
318 | If you convey an object code work under this section in, or with, or
319 | specifically for use in, a User Product, and the conveying occurs as
320 | part of a transaction in which the right of possession and use of the
321 | User Product is transferred to the recipient in perpetuity or for a
322 | fixed term (regardless of how the transaction is characterized), the
323 | Corresponding Source conveyed under this section must be accompanied
324 | by the Installation Information. But this requirement does not apply
325 | if neither you nor any third party retains the ability to install
326 | modified object code on the User Product (for example, the work has
327 | been installed in ROM).
328 |
329 | The requirement to provide Installation Information does not include a
330 | requirement to continue to provide support service, warranty, or updates
331 | for a work that has been modified or installed by the recipient, or for
332 | the User Product in which it has been modified or installed. Access to a
333 | network may be denied when the modification itself materially and
334 | adversely affects the operation of the network or violates the rules and
335 | protocols for communication across the network.
336 |
337 | Corresponding Source conveyed, and Installation Information provided,
338 | in accord with this section must be in a format that is publicly
339 | documented (and with an implementation available to the public in
340 | source code form), and must require no special password or key for
341 | unpacking, reading or copying.
342 |
343 | 7. Additional Terms.
344 |
345 | "Additional permissions" are terms that supplement the terms of this
346 | License by making exceptions from one or more of its conditions.
347 | Additional permissions that are applicable to the entire Program shall
348 | be treated as though they were included in this License, to the extent
349 | that they are valid under applicable law. If additional permissions
350 | apply only to part of the Program, that part may be used separately
351 | under those permissions, but the entire Program remains governed by
352 | this License without regard to the additional permissions.
353 |
354 | When you convey a copy of a covered work, you may at your option
355 | remove any additional permissions from that copy, or from any part of
356 | it. (Additional permissions may be written to require their own
357 | removal in certain cases when you modify the work.) You may place
358 | additional permissions on material, added by you to a covered work,
359 | for which you have or can give appropriate copyright permission.
360 |
361 | Notwithstanding any other provision of this License, for material you
362 | add to a covered work, you may (if authorized by the copyright holders of
363 | that material) supplement the terms of this License with terms:
364 |
365 | a) Disclaiming warranty or limiting liability differently from the
366 | terms of sections 15 and 16 of this License; or
367 |
368 | b) Requiring preservation of specified reasonable legal notices or
369 | author attributions in that material or in the Appropriate Legal
370 | Notices displayed by works containing it; or
371 |
372 | c) Prohibiting misrepresentation of the origin of that material, or
373 | requiring that modified versions of such material be marked in
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375 |
376 | d) Limiting the use for publicity purposes of names of licensors or
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378 |
379 | e) Declining to grant rights under trademark law for use of some
380 | trade names, trademarks, or service marks; or
381 |
382 | f) Requiring indemnification of licensors and authors of that
383 | material by anyone who conveys the material (or modified versions of
384 | it) with contractual assumptions of liability to the recipient, for
385 | any liability that these contractual assumptions directly impose on
386 | those licensors and authors.
387 |
388 | All other non-permissive additional terms are considered "further
389 | restrictions" within the meaning of section 10. If the Program as you
390 | received it, or any part of it, contains a notice stating that it is
391 | governed by this License along with a term that is a further
392 | restriction, you may remove that term. If a license document contains
393 | a further restriction but permits relicensing or conveying under this
394 | License, you may add to a covered work material governed by the terms
395 | of that license document, provided that the further restriction does
396 | not survive such relicensing or conveying.
397 |
398 | If you add terms to a covered work in accord with this section, you
399 | must place, in the relevant source files, a statement of the
400 | additional terms that apply to those files, or a notice indicating
401 | where to find the applicable terms.
402 |
403 | Additional terms, permissive or non-permissive, may be stated in the
404 | form of a separately written license, or stated as exceptions;
405 | the above requirements apply either way.
406 |
407 | 8. Termination.
408 |
409 | You may not propagate or modify a covered work except as expressly
410 | provided under this License. Any attempt otherwise to propagate or
411 | modify it is void, and will automatically terminate your rights under
412 | this License (including any patent licenses granted under the third
413 | paragraph of section 11).
414 |
415 | However, if you cease all violation of this License, then your
416 | license from a particular copyright holder is reinstated (a)
417 | provisionally, unless and until the copyright holder explicitly and
418 | finally terminates your license, and (b) permanently, if the copyright
419 | holder fails to notify you of the violation by some reasonable means
420 | prior to 60 days after the cessation.
421 |
422 | Moreover, your license from a particular copyright holder is
423 | reinstated permanently if the copyright holder notifies you of the
424 | violation by some reasonable means, this is the first time you have
425 | received notice of violation of this License (for any work) from that
426 | copyright holder, and you cure the violation prior to 30 days after
427 | your receipt of the notice.
428 |
429 | Termination of your rights under this section does not terminate the
430 | licenses of parties who have received copies or rights from you under
431 | this License. If your rights have been terminated and not permanently
432 | reinstated, you do not qualify to receive new licenses for the same
433 | material under section 10.
434 |
435 | 9. Acceptance Not Required for Having Copies.
436 |
437 | You are not required to accept this License in order to receive or
438 | run a copy of the Program. Ancillary propagation of a covered work
439 | occurring solely as a consequence of using peer-to-peer transmission
440 | to receive a copy likewise does not require acceptance. However,
441 | nothing other than this License grants you permission to propagate or
442 | modify any covered work. These actions infringe copyright if you do
443 | not accept this License. Therefore, by modifying or propagating a
444 | covered work, you indicate your acceptance of this License to do so.
445 |
446 | 10. Automatic Licensing of Downstream Recipients.
447 |
448 | Each time you convey a covered work, the recipient automatically
449 | receives a license from the original licensors, to run, modify and
450 | propagate that work, subject to this License. You are not responsible
451 | for enforcing compliance by third parties with this License.
452 |
453 | An "entity transaction" is a transaction transferring control of an
454 | organization, or substantially all assets of one, or subdividing an
455 | organization, or merging organizations. If propagation of a covered
456 | work results from an entity transaction, each party to that
457 | transaction who receives a copy of the work also receives whatever
458 | licenses to the work the party's predecessor in interest had or could
459 | give under the previous paragraph, plus a right to possession of the
460 | Corresponding Source of the work from the predecessor in interest, if
461 | the predecessor has it or can get it with reasonable efforts.
462 |
463 | You may not impose any further restrictions on the exercise of the
464 | rights granted or affirmed under this License. For example, you may
465 | not impose a license fee, royalty, or other charge for exercise of
466 | rights granted under this License, and you may not initiate litigation
467 | (including a cross-claim or counterclaim in a lawsuit) alleging that
468 | any patent claim is infringed by making, using, selling, offering for
469 | sale, or importing the Program or any portion of it.
470 |
471 | 11. Patents.
472 |
473 | A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based. The
475 | work thus licensed is called the contributor's "contributor version".
476 |
477 | A contributor's "essential patent claims" are all patent claims
478 | owned or controlled by the contributor, whether already acquired or
479 | hereafter acquired, that would be infringed by some manner, permitted
480 | by this License, of making, using, or selling its contributor version,
481 | but do not include claims that would be infringed only as a
482 | consequence of further modification of the contributor version. For
483 | purposes of this definition, "control" includes the right to grant
484 | patent sublicenses in a manner consistent with the requirements of
485 | this License.
486 |
487 | Each contributor grants you a non-exclusive, worldwide, royalty-free
488 | patent license under the contributor's essential patent claims, to
489 | make, use, sell, offer for sale, import and otherwise run, modify and
490 | propagate the contents of its contributor version.
491 |
492 | In the following three paragraphs, a "patent license" is any express
493 | agreement or commitment, however denominated, not to enforce a patent
494 | (such as an express permission to practice a patent or covenant not to
495 | sue for patent infringement). To "grant" such a patent license to a
496 | party means to make such an agreement or commitment not to enforce a
497 | patent against the party.
498 |
499 | If you convey a covered work, knowingly relying on a patent license,
500 | and the Corresponding Source of the work is not available for anyone
501 | to copy, free of charge and under the terms of this License, through a
502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients. "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 |
513 | If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 |
521 | A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License. You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 |
536 | Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
542 | If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License. If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all. For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 |
552 | 13. Use with the GNU Affero General Public License.
553 |
554 | Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work. The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
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