243 lines
8.6 KiB
Python
243 lines
8.6 KiB
Python
from app.request import VALID_PARAMS
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from app.utils.misc import BLACKLIST
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from bs4 import BeautifulSoup
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from bs4.element import ResultSet
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from cryptography.fernet import Fernet
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import re
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import urllib.parse as urlparse
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from urllib.parse import parse_qs
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SKIP_ARGS = ['ref_src', 'utm']
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FULL_RES_IMG = '<br/><a href="{}">Full Image</a>'
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GOOG_IMG = '/images/branding/searchlogo/1x/googlelogo'
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LOGO_URL = GOOG_IMG + '_desk'
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BLANK_B64 = '''
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data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAQAAAAnOwc2AAAAD0lEQVR42mNkwAIYh7IgAAVVAAuInjI5AAAAAElFTkSuQmCC
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'''
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def get_first_link(soup):
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# Replace hrefs with only the intended destination (no "utm" type tags)
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for a in soup.find_all('a', href=True):
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# Return the first search result URL
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if 'url?q=' in a['href']:
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return filter_link_args(a['href'])
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def filter_link_args(query_link):
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parsed_link = urlparse.urlparse(query_link)
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link_args = parse_qs(parsed_link.query)
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safe_args = {}
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if len(link_args) == 0 and len(parsed_link) > 0:
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return query_link
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for arg in link_args.keys():
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if arg in SKIP_ARGS:
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continue
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safe_args[arg] = link_args[arg]
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# Remove original link query and replace with filtered args
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query_link = query_link.replace(parsed_link.query, '')
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if len(safe_args) > 0:
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query_link = query_link + urlparse.urlencode(safe_args, doseq=True)
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else:
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query_link = query_link.replace('?', '')
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return query_link
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def has_ad_content(element: str):
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return element.upper() in (value.upper() for value in BLACKLIST) or 'ⓘ' in element
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class Filter:
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def __init__(self, user_keys: dict, mobile=False, config=None):
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if config is None:
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config = {}
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self.near = config['near'] if 'near' in config else ''
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self.dark = config['dark'] if 'dark' in config else False
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self.nojs = config['nojs'] if 'nojs' in config else False
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self.new_tab = config['new_tab'] if 'new_tab' in config else False
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self.mobile = mobile
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self.user_keys = user_keys
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self.main_divs = ResultSet('')
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self._elements = 0
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def __getitem__(self, name):
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return getattr(self, name)
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@property
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def elements(self):
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return self._elements
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def reskin(self, page):
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# Aesthetic only re-skinning
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page = page.replace('>G<', '>Wh<')
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pattern = re.compile('4285f4|ea4335|fbcc05|34a853|fbbc05', re.IGNORECASE)
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page = pattern.sub('685e79', page)
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if self.dark:
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page = page.replace('fff', '000').replace('202124', 'ddd').replace('1967D2', '3b85ea')
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return page
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def encrypt_path(self, msg, is_element=False):
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# Encrypts path to avoid plaintext results in logs
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if is_element:
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# Element paths are tracked differently in order for the element key to be regenerated
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# once all elements have been loaded
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enc_path = Fernet(self.user_keys['element_key']).encrypt(msg.encode()).decode()
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self._elements += 1
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return enc_path
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return Fernet(self.user_keys['text_key']).encrypt(msg.encode()).decode()
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def clean(self, soup):
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self.main_divs = soup.find('div', {'id': 'main'})
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self.remove_ads()
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self.fix_question_section()
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self.update_styling(soup)
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for img in [_ for _ in soup.find_all('img') if 'src' in _.attrs]:
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self.update_element_src(img, 'image/png')
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for audio in [_ for _ in soup.find_all('audio') if 'src' in _.attrs]:
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self.update_element_src(audio, 'audio/mpeg')
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for link in soup.find_all('a', href=True):
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self.update_link(link)
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input_form = soup.find('form')
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if input_form is not None:
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input_form['method'] = 'POST'
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# Ensure no extra scripts passed through
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for script in soup('script'):
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script.decompose()
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# Update default footer and header
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footer = soup.find('footer')
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if footer:
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# Remove divs that have multiple links beyond just page navigation
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[_.decompose() for _ in footer.find_all('div', recursive=False) if len(_.find_all('a', href=True)) > 2]
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header = soup.find('header')
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if header:
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header.decompose()
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return soup
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def remove_ads(self):
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if not self.main_divs:
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return
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for div in [_ for _ in self.main_divs.find_all('div', recursive=True)]:
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has_ad = len([_ for _ in div.find_all('span', recursive=True) if has_ad_content(_.text)])
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_ = div.decompose() if has_ad else None
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def fix_question_section(self):
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if not self.main_divs:
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return
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question_divs = [_ for _ in self.main_divs.find_all('div', recursive=False) if len(_.find_all('h2')) > 0]
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for question_div in question_divs:
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questions = [_ for _ in question_div.find_all('div', recursive=True) if _.text.endswith('?')]
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for question in questions:
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question['style'] = 'padding: 10px; font-style: italic;'
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def update_element_src(self, element, mime):
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element_src = element['src']
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if element_src.startswith('//'):
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element_src = 'https:' + element_src
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elif element_src.startswith(LOGO_URL):
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# Re-brand with Whoogle logo
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element['src'] = '/static/img/logo.png'
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element['style'] = 'height:40px;width:162px'
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return
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elif element_src.startswith(GOOG_IMG):
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element['src'] = BLANK_B64
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return
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element['src'] = '/element?url=' + self.encrypt_path(element_src, is_element=True) + \
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'&type=' + urlparse.quote(mime)
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# TODO: Non-mobile image results link to website instead of image
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# if not self.mobile:
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# img.append(BeautifulSoup(FULL_RES_IMG.format(element_src), 'html.parser'))
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def update_styling(self, soup):
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# Remove unnecessary button(s)
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for button in soup.find_all('button'):
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button.decompose()
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# Remove svg logos
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for svg in soup.find_all('svg'):
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svg.decompose()
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# Update logo
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logo = soup.find('a', {'class': 'l'})
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if logo and self.mobile:
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logo['style'] = 'display:flex; justify-content:center; align-items:center; color:#685e79; ' \
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'font-size:18px; '
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# Fix search bar length on mobile
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try:
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search_bar = soup.find('header').find('form').find('div')
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search_bar['style'] = 'width: 100%;'
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except AttributeError:
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pass
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# Set up dark mode if active
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if self.dark:
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soup.find('html')['style'] = 'scrollbar-color: #333 #111;color:#fff !important;background:#000 !important'
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for input_element in soup.findAll('input'):
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input_element['style'] = 'color:#fff;background:#000;'
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for span_element in soup.findAll('span'):
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span_element['style'] = 'color: white;'
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for href_element in soup.findAll('a'):
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href_element['style'] = 'color: white' if href_element['href'].startswith('/search') else ''
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def update_link(self, link):
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# Replace href with only the intended destination (no "utm" type tags)
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href = link['href'].replace('https://www.google.com', '')
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if '/advanced_search' in href:
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link.decompose()
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return
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elif self.new_tab:
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link['target'] = '_blank'
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result_link = urlparse.urlparse(href)
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query_link = parse_qs(result_link.query)['q'][0] if '?q=' in href else ''
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if query_link.startswith('/'):
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link['href'] = 'https://google.com' + query_link
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elif '/search?q=' in href:
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new_search = '/search?q=' + self.encrypt_path(query_link)
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query_params = parse_qs(urlparse.urlparse(href).query)
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for param in VALID_PARAMS:
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param_val = query_params[param][0] if param in query_params else ''
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new_search += '&' + param + '=' + param_val
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link['href'] = new_search
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elif 'url?q=' in href:
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# Strip unneeded arguments
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link['href'] = filter_link_args(query_link)
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# Add no-js option
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if self.nojs:
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gen_nojs(link)
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else:
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link['href'] = href
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def gen_nojs(sibling):
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nojs_link = BeautifulSoup().new_tag('a')
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nojs_link['href'] = '/window?location=' + sibling['href']
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nojs_link['style'] = 'display:block;width:100%;'
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nojs_link.string = 'NoJS Link: ' + nojs_link['href']
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sibling.append(BeautifulSoup('<br><hr><br>', 'html.parser'))
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sibling.append(nojs_link)
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