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Yotter/youtube/util.py

478 lines
18 KiB
Python

import gzip
import requests
from bs4 import BeautifulSoup
from youtube import yt_data_extract
try:
import brotli
have_brotli = True
except ImportError:
have_brotli = False
import urllib.parse
import re
import time
import os
import json
import gevent
import gevent.queue
import gevent.lock
from python_anticaptcha import AnticaptchaClient, NoCaptchaTaskProxylessTask
# The trouble with the requests library: It ships its own certificate bundle via certifi
# instead of using the system certificate store, meaning self-signed certificates
# configured by the user will not work. Some draconian networks block TLS unless a corporate
# certificate is installed on the system. Additionally, some users install a self signed cert
# in order to use programs to modify or monitor requests made by programs on the system.
# Finally, certificates expire and need to be updated, or are sometimes revoked. Sometimes
# certificate authorites go rogue and need to be untrusted. Since we are going through Tor exit nodes,
# this becomes all the more important. A rogue CA could issue a fake certificate for accounts.google.com, and a
# malicious exit node could use this to decrypt traffic when logging in and retrieve passwords. Examples:
# https://www.engadget.com/2015/10/29/google-warns-symantec-over-certificates/
# https://nakedsecurity.sophos.com/2013/12/09/serious-security-google-finds-fake-but-trusted-ssl-certificates-for-its-domains-made-in-france/
# In the requests documentation it says:
# "Before version 2.16, Requests bundled a set of root CAs that it trusted, sourced from the Mozilla trust store.
# The certificates were only updated once for each Requests version. When certifi was not installed,
# this led to extremely out-of-date certificate bundles when using significantly older versions of Requests.
# For the sake of security we recommend upgrading certifi frequently!"
# (http://docs.python-requests.org/en/master/user/advanced/#ca-certificates)
# Expecting users to remember to manually update certifi on Linux isn't reasonable in my view.
# On windows, this is even worse since I am distributing all dependencies. This program is not
# updated frequently, and using requests would lead to outdated certificates. Certificates
# should be updated with OS updates, instead of thousands of developers of different programs
# being expected to do this correctly 100% of the time.
# There is hope that this might be fixed eventually:
# https://github.com/kennethreitz/requests/issues/2966
# Until then, I will use a mix of urllib3 and urllib.
import urllib3
import urllib3.contrib.socks
URL_ORIGIN = "/https://www.youtube.com"
connection_pool = urllib3.PoolManager(cert_reqs='CERT_REQUIRED')
class HTTPAsymmetricCookieProcessor(urllib.request.BaseHandler):
'''Separate cookiejars for receiving and sending'''
def __init__(self, cookiejar_send=None, cookiejar_receive=None):
self.cookiejar_send = cookiejar_send
self.cookiejar_receive = cookiejar_receive
def http_request(self, request):
if self.cookiejar_send is not None:
self.cookiejar_send.add_cookie_header(request)
return request
def http_response(self, request, response):
if self.cookiejar_receive is not None:
self.cookiejar_receive.extract_cookies(response, request)
return response
https_request = http_request
https_response = http_response
class FetchError(Exception):
def __init__(self, code, reason='', ip=None):
Exception.__init__(self, 'HTTP error during request: ' + code + ' ' + reason)
self.code = code
self.reason = reason
self.ip = ip
def decode_content(content, encoding_header):
encodings = encoding_header.replace(' ', '').split(',')
for encoding in reversed(encodings):
if encoding == 'identity':
continue
if encoding == 'br':
content = brotli.decompress(content)
elif encoding == 'gzip':
content = gzip.decompress(content)
return content
def bypass_captcha(session, response, url, cookies):
print("vvv COOKIES DICT vvv")
inputs = {}
html = BeautifulSoup(str(response.text), "lxml")
# If there's a captcha and we need to solve it...
if html.body.find('div', attrs={'class': 'g-recaptcha'}):
# Get the captcha form
form = html.body.find('form', attrs={"action": "/das_captcha"})
# Set up form inputs for request
for _input in form.find_all('input'):
try:
print(_input["name"] + " -> " + _input["value"])
inputs[_input["name"]] = _input["value"]
except KeyError:
continue
print("\n vvv Form inputs created vvv ")
print(inputs)
# Get CAPTCHA keys
site_key = html.body.find('div', attrs={'class': 'g-recaptcha'})['data-sitekey']
s_value = html.body.find('input', attrs={'name': 'session_token'})['value']
# Get anti-captcha API key from config
config = json.load(open('yotter-config.json'))
# Generate anti-captcha request payload
body = {'clientKey': config['anticaptcha']}
task = {'type': "NoCaptchaTaskProxyless", 'websiteURL': url,
'websiteKey': site_key, "recaptchaDataSValue": s_value}
body['task'] = task
# Create the task.
response = requests.post("https://api.anti-captcha.com/createTask", json=body).json()
task_id = response["taskId"]
print("Task was created: {}. Waiting...".format(task_id))
# Wait until task is completed
body = {"clientKey": config['anticaptcha'], "taskId": task_id}
response = requests.post("https://api.anti-captcha.com/getTaskResult", json=body).json()
ready = response["status"] == "ready"
while not ready:
print(response['status'])
response = requests.post("https://api.anti-captcha.com/getTaskResult", json=body).json()
ready = response["status"] == "ready"
inputs['g-recaptcha-response'] = response['solution']['gRecaptchaResponse']
print(response['solution'])
# Print POST request headers
print(requests.post("https://youtube.com/das_captcha", data=inputs,
headers={"Content-Type": "application/x-www-form-urlencoded",
"Accept-Language": "en-US,en;q=0.5",
"User-Agent":'Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0',
"Referer": "https://www.youtube.com/das_captcha",
"Origin": "https://www.youtube.com"}, cookies=session.cookies).headers)
def fetch_url_response(url, headers=(), timeout=15, data=None,
cookiejar_send=None, cookiejar_receive=None,
use_tor=True, max_redirects=None):
'''
returns response, cleanup_function
When cookiejar_send is set to a CookieJar object,
those cookies will be sent in the request (but cookies in response will not be merged into it)
When cookiejar_receive is set to a CookieJar object,
cookies received in the response will be merged into the object (nothing will be sent from it)
When both are set to the same object, cookies will be sent from the object,
and response cookies will be merged into it.
'''
headers = dict(headers) # Note: Calling dict() on a dict will make a copy
if have_brotli:
headers['Accept-Encoding'] = 'gzip, br'
else:
headers['Accept-Encoding'] = 'gzip'
# prevent python version being leaked by urllib if User-Agent isn't provided
# (urllib will use ex. Python-urllib/3.6 otherwise)
if 'User-Agent' not in headers and 'user-agent' not in headers and 'User-agent' not in headers:
headers['User-Agent'] = 'Python-urllib'
method = "GET"
if data is not None:
method = "POST"
if isinstance(data, str):
data = data.encode('ascii')
elif not isinstance(data, bytes):
data = urllib.parse.urlencode(data).encode('ascii')
if cookiejar_send is not None or cookiejar_receive is not None: # Use urllib
req = urllib.request.Request(url, data=data, headers=headers)
cookie_processor = HTTPAsymmetricCookieProcessor(cookiejar_send=cookiejar_send,
cookiejar_receive=cookiejar_receive)
opener = urllib.request.build_opener(cookie_processor)
response = opener.open(req, timeout=timeout)
cleanup_func = (lambda r: None)
else: # Use a urllib3 pool. Cookies can't be used since urllib3 doesn't have easy support for them.
# default: Retry.DEFAULT = Retry(3)
# (in connectionpool.py in urllib3)
# According to the documentation for urlopen, a redirect counts as a
# retry. So there are 3 redirects max by default.
session = requests.Session()
print("Starting python GET request to "+url+"...")
response = session.get(url, headers={'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0'})
# Strings that appear when there's a Captcha.
string_de = "Fülle das folgende Feld aus, um YouTube weiter zu nutzen."
string_en = "To continue with your YouTube experience, please fill out the form below."
# If there's a captcha, bypass it.
if string_de in response.text or string_en in response.text:
bypass_captcha(session, response, url, session.cookies)
return "Captcha", "Captcha"
if max_redirects:
retries = urllib3.Retry(3 + max_redirects, redirect=max_redirects)
else:
retries = urllib3.Retry(3)
pool = connection_pool
response = pool.request(method, url, headers=headers,
timeout=timeout, preload_content=False,
decode_content=False, retries=retries)
cleanup_func = (lambda r: r.release_conn())
return response, cleanup_func
def fetch_url(url, headers=(), timeout=15, report_text=None, data=None,
cookiejar_send=None, cookiejar_receive=None, use_tor=True,
debug_name=None):
start_time = time.time()
response, cleanup_func = fetch_url_response(
url, headers, timeout=timeout,
cookiejar_send=cookiejar_send, cookiejar_receive=cookiejar_receive,
use_tor=use_tor)
print(response)
if response == "Captcha":
return "Captcha"
response_time = time.time()
content = response.read()
read_finish = time.time()
cleanup_func(response) # release_connection for urllib3
if (response.status == 429
and content.startswith(b'<!DOCTYPE')
and b'Our systems have detected unusual traffic' in content):
ip = re.search(br'IP address: ((?:[\da-f]*:)+[\da-f]+|(?:\d+\.)+\d+)',
content)
ip = ip.group(1).decode('ascii') if ip else None
raise FetchError('429', reason=response.reason, ip=ip)
elif response.status >= 400:
raise FetchError(str(response.status), reason=response.reason, ip=None)
if report_text:
print(report_text, ' Latency:', round(response_time - start_time, 3), ' Read time:',
round(read_finish - response_time, 3))
content = decode_content(content, response.getheader('Content-Encoding', default='identity'))
return content
def head(url, use_tor=False, report_text=None, max_redirects=10):
pool = connection_pool
start_time = time.time()
# default: Retry.DEFAULT = Retry(3)
# (in connectionpool.py in urllib3)
# According to the documentation for urlopen, a redirect counts as a retry
# So there are 3 redirects max by default. Let's change that
# to 10 since googlevideo redirects a lot.
retries = urllib3.Retry(3 + max_redirects, redirect=max_redirects,
raise_on_redirect=False)
headers = {'User-Agent': 'Python-urllib'}
response = pool.request('HEAD', url, headers=headers, retries=retries)
if report_text:
print(report_text, ' Latency:', round(time.time() - start_time, 3))
return response
mobile_user_agent = 'Mozilla/5.0 (Linux; Android 7.0; Redmi Note 4 Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36'
mobile_ua = (('User-Agent', mobile_user_agent),)
desktop_user_agent = 'Mozilla/5.0 (Windows NT 6.1; rv:52.0) Gecko/20100101 Firefox/52.0'
desktop_ua = (('User-Agent', desktop_user_agent),)
class RateLimitedQueue(gevent.queue.Queue):
''' Does initial_burst (def. 30) at first, then alternates between waiting waiting_period (def. 5) seconds and doing subsequent_bursts (def. 10) queries. After 5 seconds with nothing left in the queue, resets rate limiting. '''
def __init__(self, initial_burst=30, waiting_period=5, subsequent_bursts=10):
self.initial_burst = initial_burst
self.waiting_period = waiting_period
self.subsequent_bursts = subsequent_bursts
self.count_since_last_wait = 0
self.surpassed_initial = False
self.lock = gevent.lock.BoundedSemaphore(1)
self.currently_empty = False
self.empty_start = 0
gevent.queue.Queue.__init__(self)
def get(self):
self.lock.acquire() # blocks if another greenlet currently has the lock
if self.count_since_last_wait >= self.subsequent_bursts and self.surpassed_initial:
gevent.sleep(self.waiting_period)
self.count_since_last_wait = 0
elif self.count_since_last_wait >= self.initial_burst and not self.surpassed_initial:
self.surpassed_initial = True
gevent.sleep(self.waiting_period)
self.count_since_last_wait = 0
self.count_since_last_wait += 1
if not self.currently_empty and self.empty():
self.currently_empty = True
self.empty_start = time.monotonic()
item = gevent.queue.Queue.get(self) # blocks when nothing left
if self.currently_empty:
if time.monotonic() - self.empty_start >= self.waiting_period:
self.count_since_last_wait = 0
self.surpassed_initial = False
self.currently_empty = False
self.lock.release()
return item
def download_thumbnail(save_directory, video_id):
url = "https://i.ytimg.com/vi/" + video_id + "/mqdefault.jpg"
save_location = os.path.join(save_directory, video_id + ".jpg")
try:
thumbnail = fetch_url(url, report_text="Saved thumbnail: " + video_id)
except urllib.error.HTTPError as e:
print("Failed to download thumbnail for " + video_id + ": " + str(e))
return False
try:
f = open(save_location, 'wb')
except FileNotFoundError:
os.makedirs(save_directory, exist_ok=True)
f = open(save_location, 'wb')
f.write(thumbnail)
f.close()
return True
def download_thumbnails(save_directory, ids):
if not isinstance(ids, (list, tuple)):
ids = list(ids)
# only do 5 at a time
# do the n where n is divisible by 5
i = -1
for i in range(0, int(len(ids) / 5) - 1):
gevent.joinall([gevent.spawn(download_thumbnail, save_directory, ids[j]) for j in range(i * 5, i * 5 + 5)])
# do the remainders (< 5)
gevent.joinall([gevent.spawn(download_thumbnail, save_directory, ids[j]) for j in range(i * 5 + 5, len(ids))])
def dict_add(*dicts):
for dictionary in dicts[1:]:
dicts[0].update(dictionary)
return dicts[0]
def video_id(url):
url_parts = urllib.parse.urlparse(url)
return urllib.parse.parse_qs(url_parts.query)['v'][0]
# default, sddefault, mqdefault, hqdefault, hq720
def get_thumbnail_url(video_id):
return "/i.ytimg.com/vi/" + video_id + "/mqdefault.jpg"
def seconds_to_timestamp(seconds):
seconds = int(seconds)
hours, seconds = divmod(seconds, 3600)
minutes, seconds = divmod(seconds, 60)
if hours != 0:
timestamp = str(hours) + ":"
timestamp += str(minutes).zfill(2) # zfill pads with zeros
else:
timestamp = str(minutes)
timestamp += ":" + str(seconds).zfill(2)
return timestamp
def update_query_string(query_string, items):
parameters = urllib.parse.parse_qs(query_string)
parameters.update(items)
return urllib.parse.urlencode(parameters, doseq=True)
def uppercase_escape(s):
return re.sub(
r'\\U([0-9a-fA-F]{8})',
lambda m: chr(int(m.group(1), base=16)), s)
def prefix_url(url):
if url is None:
return None
url = url.lstrip('/') # some urls have // before them, which has a special meaning
return '/' + url
def left_remove(string, substring):
'''removes substring from the start of string, if present'''
if string.startswith(substring):
return string[len(substring):]
return string
def concat_or_none(*strings):
'''Concatenates strings. Returns None if any of the arguments are None'''
result = ''
for string in strings:
if string is None:
return None
result += string
return result
def prefix_urls(item):
try:
item['thumbnail'] = prefix_url(item['thumbnail'])
except KeyError:
pass
try:
item['author_url'] = prefix_url(item['author_url'])
except KeyError:
pass
def add_extra_html_info(item):
if item['type'] == 'video':
item['url'] = (URL_ORIGIN + '/watch?v=' + item['id']) if item.get('id') else None
video_info = {}
for key in ('id', 'title', 'author', 'duration'):
try:
video_info[key] = item[key]
except KeyError:
video_info[key] = ''
item['video_info'] = json.dumps(video_info)
elif item['type'] == 'playlist':
item['url'] = (URL_ORIGIN + '/playlist?list=' + item['id']) if item.get('id') else None
elif item['type'] == 'channel':
item['url'] = (URL_ORIGIN + "/channel/" + item['id']) if item.get('id') else None
def parse_info_prepare_for_html(renderer, additional_info={}):
item = yt_data_extract.extract_item_info(renderer, additional_info)
prefix_urls(item)
add_extra_html_info(item)
return item
def check_gevent_exceptions(*tasks):
for task in tasks:
if task.exception:
raise task.exception