whoogle-search/app/filter.py
Ben Busby 137b0ef8db Added header template for autocomplete on results view
New header template adds full control over search field on desktop and
mobile, which now allows for autocomplete suggestions on the
results page

Also fixed autocomplete results format, since opensearch requires a
suggestions response of [<original query>, [<suggestion array>]]
2020-05-23 17:20:33 -06:00

207 lines
7.2 KiB
Python

from app.request import VALID_PARAMS
from bs4 import BeautifulSoup
from cryptography.fernet import Fernet
import re
import urllib.parse as urlparse
from urllib.parse import parse_qs
SKIP_ARGS = ['ref_src', 'utm']
FULL_RES_IMG = '<br/><a href="{}">Full Image</a>'
GOOG_IMG = '/images/branding/searchlogo/1x/googlelogo'
LOGO_URL = GOOG_IMG + '_desk'
BLANK_B64 = '''
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAQAAAAnOwc2AAAAD0lEQVR42mNkwAIYh7IgAAVVAAuInjI5AAAAAElFTkSuQmCC
'''
def get_first_link(soup):
# Replace hrefs with only the intended destination (no "utm" type tags)
for a in soup.find_all('a', href=True):
href = a['href'].replace('https://www.google.com', '')
result_link = urlparse.urlparse(href)
query_link = parse_qs(result_link.query)['q'][0] if '?q=' in href else ''
# Return the first search result URL
if 'url?q=' in href:
return filter_link_args(href)
def filter_link_args(query_link):
parsed_link = urlparse.urlparse(query_link)
link_args = parse_qs(parsed_link.query)
safe_args = {}
if len(link_args) == 0 and len(parsed_link) > 0:
return query_link
for arg in link_args.keys():
if arg in SKIP_ARGS:
continue
safe_args[arg] = link_args[arg]
# Remove original link query and replace with filtered args
query_link = query_link.replace(parsed_link.query, '')
if len(safe_args) > 0:
query_link = query_link + urlparse.urlencode(safe_args, doseq=True)
else:
query_link = query_link.replace('?', '')
return query_link
class Filter:
def __init__(self, mobile=False, config=None, secret_key=''):
if config is None:
config = {}
self.near = config['near'] if 'near' in config else ''
self.dark = config['dark'] if 'dark' in config else False
self.nojs = config['nojs'] if 'nojs' in config else False
self.new_tab = config['new_tab'] if 'new_tab' in config else False
self.mobile = mobile
self.secret_key = secret_key
def __getitem__(self, name):
return getattr(self, name)
def reskin(self, page):
# Aesthetic only re-skinning
page = page.replace('>G<', '>Wh<')
pattern = re.compile('4285f4|ea4335|fbcc05|34a853|fbbc05', re.IGNORECASE)
page = pattern.sub('685e79', page)
if self.dark:
page = page.replace('fff', '000').replace('202124', 'ddd').replace('1967D2', '3b85ea')
return page
def clean(self, soup):
self.remove_ads(soup)
self.update_image_paths(soup)
self.update_styling(soup)
self.update_links(soup)
input_form = soup.find('form')
if input_form is not None:
input_form['method'] = 'POST'
# Ensure no extra scripts passed through
for script in soup('script'):
script.decompose()
footer = soup.find('div', id='sfooter')
if footer:
footer.decompose()
header = soup.find('header')
if header:
header.decompose()
return soup
def remove_ads(self, soup):
main_divs = soup.find('div', {'id': 'main'})
if main_divs is None:
return
result_divs = main_divs.find_all('div', recursive=False)
# Only ads/sponsored content use classes in the list of result divs
ad_divs = [ad_div for ad_div in result_divs if 'class' in ad_div.attrs]
for div in ad_divs:
div.decompose()
def update_image_paths(self, soup):
for img in [_ for _ in soup.find_all('img') if 'src' in _.attrs]:
img_src = img['src']
if img_src.startswith('//'):
img_src = 'https:' + img_src
elif img_src.startswith(LOGO_URL):
# Re-brand with Whoogle logo
img['src'] = '/static/img/logo.png'
img['style'] = 'height:40px;width:162px'
continue
elif img_src.startswith(GOOG_IMG):
img['src'] = BLANK_B64
continue
enc_src = Fernet(self.secret_key).encrypt(img_src.encode())
img['src'] = '/tmp?image_url=' + enc_src.decode()
# TODO: Non-mobile image results link to website instead of image
# if not self.mobile:
# img.append(BeautifulSoup(FULL_RES_IMG.format(img_src), 'html.parser'))
def update_styling(self, soup):
# Remove unnecessary button(s)
for button in soup.find_all('button'):
button.decompose()
# Remove svg logos
for svg in soup.find_all('svg'):
svg.decompose()
# Update logo
logo = soup.find('a', {'class': 'l'})
if logo and self.mobile:
logo['style'] = 'display:flex; justify-content:center; align-items:center; color:#685e79; ' \
'font-size:18px; '
# Fix search bar length on mobile
try:
search_bar = soup.find('header').find('form').find('div')
search_bar['style'] = 'width: 100%;'
except AttributeError:
pass
# Set up dark mode if active
if self.dark:
soup.find('html')['style'] = 'scrollbar-color: #333 #111;color:#fff !important;background:#000 !important'
for input_element in soup.findAll('input'):
input_element['style'] = 'color:#fff;background:#000;'
for span_element in soup.findAll('span'):
span_element['style'] = 'color: white;'
for href_element in soup.findAll('a'):
href_element['style'] = 'color: white' if href_element['href'].startswith('/search') else ''
def update_links(self, soup):
# Replace hrefs with only the intended destination (no "utm" type tags)
for a in soup.find_all('a', href=True):
href = a['href'].replace('https://www.google.com', '')
if '/advanced_search' in href:
a.decompose()
continue
elif self.new_tab:
a['target'] = '_blank'
result_link = urlparse.urlparse(href)
query_link = parse_qs(result_link.query)['q'][0] if '?q=' in href else ''
if '/search?q=' in href:
enc_result = Fernet(self.secret_key).encrypt(query_link.encode())
new_search = '/search?q=' + enc_result.decode()
query_params = parse_qs(urlparse.urlparse(href).query)
for param in VALID_PARAMS:
param_val = query_params[param][0] if param in query_params else ''
new_search += '&' + param + '=' + param_val
a['href'] = new_search
elif 'url?q=' in href:
# Strip unneeded arguments
a['href'] = filter_link_args(query_link)
# Add no-js option
if self.nojs:
gen_nojs(soup, a['href'], a)
else:
a['href'] = href
def gen_nojs(soup, link, sibling):
nojs_link = soup.new_tag('a')
nojs_link['href'] = '/window?location=' + link
nojs_link['style'] = 'display:block;width:100%;'
nojs_link.string = 'NoJS Link: ' + nojs_link['href']
sibling.append(BeautifulSoup('<br><hr><br>', 'html.parser'))
sibling.append(nojs_link)