mirror of
https://github.com/searxng/searxng.git
synced 2024-11-27 13:21:04 +00:00
371 lines
12 KiB
Python
371 lines
12 KiB
Python
# Google (Web)
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#
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# @website https://www.google.com
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# @provide-api yes (https://developers.google.com/custom-search/)
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#
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# @using-api no
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# @results HTML
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# @stable no (HTML can change)
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# @parse url, title, content, suggestion
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import re
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from cgi import escape
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from urllib import urlencode
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from urlparse import urlparse, parse_qsl
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from lxml import html, etree
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from searx.poolrequests import get
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from searx.engines.xpath import extract_text, extract_url
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from searx.search import logger
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logger = logger.getChild('google engine')
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# engine dependent config
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categories = ['general']
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paging = True
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language_support = True
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use_locale_domain = True
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# based on https://en.wikipedia.org/wiki/List_of_Google_domains and tests
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default_hostname = 'www.google.com'
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country_to_hostname = {
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'BG': 'www.google.bg', # Bulgaria
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'CZ': 'www.google.cz', # Czech Republic
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'DE': 'www.google.de', # Germany
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'DK': 'www.google.dk', # Denmark
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'AT': 'www.google.at', # Austria
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'CH': 'www.google.ch', # Switzerland
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'GR': 'www.google.gr', # Greece
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'AU': 'www.google.com.au', # Australia
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'CA': 'www.google.ca', # Canada
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'GB': 'www.google.co.uk', # United Kingdom
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'ID': 'www.google.co.id', # Indonesia
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'IE': 'www.google.ie', # Ireland
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'IN': 'www.google.co.in', # India
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'MY': 'www.google.com.my', # Malaysia
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'NZ': 'www.google.co.nz', # New Zealand
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'PH': 'www.google.com.ph', # Philippines
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'SG': 'www.google.com.sg', # Singapore
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# 'US': 'www.google.us', # United State, redirect to .com
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'ZA': 'www.google.co.za', # South Africa
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'AR': 'www.google.com.ar', # Argentina
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'CL': 'www.google.cl', # Chile
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'ES': 'www.google.es', # Span
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'MX': 'www.google.com.mx', # Mexico
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'EE': 'www.google.ee', # Estonia
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'FI': 'www.google.fi', # Finland
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'BE': 'www.google.be', # Belgium
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'FR': 'www.google.fr', # France
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'IL': 'www.google.co.il', # Israel
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'HR': 'www.google.hr', # Croatia
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'HU': 'www.google.hu', # Hungary
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'IT': 'www.google.it', # Italy
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'JP': 'www.google.co.jp', # Japan
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'KR': 'www.google.co.kr', # South Korean
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'LT': 'www.google.lt', # Lithuania
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'LV': 'www.google.lv', # Latvia
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'NO': 'www.google.no', # Norway
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'NL': 'www.google.nl', # Netherlands
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'PL': 'www.google.pl', # Poland
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'BR': 'www.google.com.br', # Brazil
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'PT': 'www.google.pt', # Portugal
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'RO': 'www.google.ro', # Romania
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'RU': 'www.google.ru', # Russia
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'SK': 'www.google.sk', # Slovakia
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'SL': 'www.google.si', # Slovenia (SL -> si)
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'SE': 'www.google.se', # Sweden
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'TH': 'www.google.co.th', # Thailand
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'TR': 'www.google.com.tr', # Turkey
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'UA': 'www.google.com.ua', # Ikraine
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# 'CN': 'www.google.cn', # China, only from china ?
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'HK': 'www.google.com.hk', # Hong kong
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'TW': 'www.google.com.tw' # Taiwan
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}
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# osm
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url_map = 'https://www.openstreetmap.org/'\
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+ '?lat={latitude}&lon={longitude}&zoom={zoom}&layers=M'
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# search-url
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search_path = '/search'
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search_url = ('https://{hostname}' +
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search_path +
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'?{query}&start={offset}&gbv=1')
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# other URLs
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map_hostname_start = 'maps.google.'
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maps_path = '/maps'
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redirect_path = '/url'
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images_path = '/images'
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# specific xpath variables
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results_xpath = '//li[@class="g"]'
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url_xpath = './/h3/a/@href'
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title_xpath = './/h3'
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content_xpath = './/span[@class="st"]'
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content_misc_xpath = './/div[@class="f slp"]'
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suggestion_xpath = '//p[@class="_Bmc"]'
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# map : detail location
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map_address_xpath = './/div[@class="s"]//table//td[2]/span/text()'
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map_phone_xpath = './/div[@class="s"]//table//td[2]/span/span'
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map_website_url_xpath = 'h3[2]/a/@href'
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map_website_title_xpath = 'h3[2]'
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# map : near the location
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map_near = 'table[@class="ts"]//tr'
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map_near_title = './/h4'
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map_near_url = './/h4/a/@href'
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map_near_phone = './/span[@class="nobr"]'
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# images
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images_xpath = './/div/a'
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image_url_xpath = './@href'
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image_img_src_xpath = './img/@src'
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# property names
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# FIXME : no translation
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property_address = "Address"
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property_phone = "Phone number"
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# cookies
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pref_cookie = ''
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nid_cookie = {}
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# see https://support.google.com/websearch/answer/873?hl=en
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def get_google_pref_cookie():
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global pref_cookie
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if pref_cookie == '':
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resp = get('https://www.google.com/ncr', allow_redirects=False)
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pref_cookie = resp.cookies["PREF"]
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return pref_cookie
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def get_google_nid_cookie(google_hostname):
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global nid_cookie
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if google_hostname not in nid_cookie:
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resp = get('https://' + google_hostname)
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nid_cookie[google_hostname] = resp.cookies.get("NID", None)
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return nid_cookie[google_hostname]
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# remove google-specific tracking-url
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def parse_url(url_string, google_hostname):
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# sanity check
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if url_string is None:
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return url_string
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# normal case
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parsed_url = urlparse(url_string)
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if (parsed_url.netloc in [google_hostname, '']
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and parsed_url.path == redirect_path):
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query = dict(parse_qsl(parsed_url.query))
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return query['q']
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else:
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return url_string
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# returns extract_text on the first result selected by the xpath or None
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def extract_text_from_dom(result, xpath):
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r = result.xpath(xpath)
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if len(r) > 0:
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return escape(extract_text(r[0]))
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return None
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# do search-request
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def request(query, params):
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offset = (params['pageno'] - 1) * 10
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if params['language'] == 'all':
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language = 'en'
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country = 'US'
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else:
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language_array = params['language'].lower().split('_')
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if len(language_array) == 2:
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country = language_array[1]
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else:
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country = 'US'
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language = language_array[0] + ',' + language_array[0] + '-' + country
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if use_locale_domain:
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google_hostname = country_to_hostname.get(country.upper(), default_hostname)
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else:
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google_hostname = default_hostname
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params['url'] = search_url.format(offset=offset,
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query=urlencode({'q': query}),
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hostname=google_hostname)
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params['headers']['Accept-Language'] = language
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params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'
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if google_hostname == default_hostname:
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params['cookies']['PREF'] = get_google_pref_cookie()
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params['cookies']['NID'] = get_google_nid_cookie(google_hostname)
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params['google_hostname'] = google_hostname
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return params
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# get response from search-request
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def response(resp):
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results = []
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# detect google sorry
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resp_url = urlparse(resp.url)
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if resp_url.netloc == 'sorry.google.com' or resp_url.path == '/sorry/IndexRedirect':
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raise RuntimeWarning('sorry.google.com')
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# which hostname ?
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google_hostname = resp.search_params.get('google_hostname')
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google_url = "https://" + google_hostname
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# convert the text to dom
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dom = html.fromstring(resp.text)
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# parse results
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for result in dom.xpath(results_xpath):
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try:
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title = extract_text(result.xpath(title_xpath)[0])
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url = parse_url(extract_url(result.xpath(url_xpath), google_url), google_hostname)
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parsed_url = urlparse(url, google_hostname)
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# map result
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if ((parsed_url.netloc == google_hostname and parsed_url.path.startswith(maps_path))
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or (parsed_url.netloc.startswith(map_hostname_start))):
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x = result.xpath(map_near)
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if len(x) > 0:
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# map : near the location
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results = results + parse_map_near(parsed_url, x, google_hostname)
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else:
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# map : detail about a location
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results = results + parse_map_detail(parsed_url, result, google_hostname)
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# google news
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elif (parsed_url.netloc == google_hostname
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and parsed_url.path == search_path):
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# skipping news results
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pass
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# images result
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elif (parsed_url.netloc == google_hostname
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and parsed_url.path == images_path):
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# only thumbnail image provided,
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# so skipping image results
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# results = results + parse_images(result, google_hostname)
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pass
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else:
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# normal result
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content = extract_text_from_dom(result, content_xpath)
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if content is None:
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continue
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content_misc = extract_text_from_dom(result, content_misc_xpath)
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if content_misc is not None:
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content = content_misc + "<br />" + content
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# append result
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results.append({'url': url,
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'title': title,
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'content': content
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})
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except:
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logger.debug('result parse error in:\n%s', etree.tostring(result, pretty_print=True))
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continue
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# parse suggestion
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for suggestion in dom.xpath(suggestion_xpath):
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# append suggestion
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results.append({'suggestion': escape(extract_text(suggestion))})
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# return results
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return results
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def parse_images(result, google_hostname):
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results = []
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for image in result.xpath(images_xpath):
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url = parse_url(extract_text(image.xpath(image_url_xpath)[0]), google_hostname)
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img_src = extract_text(image.xpath(image_img_src_xpath)[0])
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# append result
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results.append({'url': url,
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'title': '',
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'content': '',
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'img_src': img_src,
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'template': 'images.html'
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})
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return results
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def parse_map_near(parsed_url, x, google_hostname):
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results = []
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for result in x:
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title = extract_text_from_dom(result, map_near_title)
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url = parse_url(extract_text_from_dom(result, map_near_url), google_hostname)
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attributes = []
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phone = extract_text_from_dom(result, map_near_phone)
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add_attributes(attributes, property_phone, phone, 'tel:' + phone)
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results.append({'title': title,
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'url': url,
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'content': attributes_to_html(attributes)
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})
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return results
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def parse_map_detail(parsed_url, result, google_hostname):
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results = []
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# try to parse the geoloc
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m = re.search('@([0-9\.]+),([0-9\.]+),([0-9]+)', parsed_url.path)
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if m is None:
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m = re.search('ll\=([0-9\.]+),([0-9\.]+)\&z\=([0-9]+)', parsed_url.query)
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if m is not None:
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# geoloc found (ignored)
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lon = float(m.group(2)) # noqa
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lat = float(m.group(1)) # noqa
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zoom = int(m.group(3)) # noqa
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# attributes
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attributes = []
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address = extract_text_from_dom(result, map_address_xpath)
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phone = extract_text_from_dom(result, map_phone_xpath)
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add_attributes(attributes, property_address, address, 'geo:' + str(lat) + ',' + str(lon))
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add_attributes(attributes, property_phone, phone, 'tel:' + phone)
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# title / content / url
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website_title = extract_text_from_dom(result, map_website_title_xpath)
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content = extract_text_from_dom(result, content_xpath)
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website_url = parse_url(extract_text_from_dom(result, map_website_url_xpath), google_hostname)
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# add a result if there is a website
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if website_url is not None:
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results.append({'title': website_title,
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'content': (content + '<br />' if content is not None else '')
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+ attributes_to_html(attributes),
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'url': website_url
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})
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return results
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def add_attributes(attributes, name, value, url):
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if value is not None and len(value) > 0:
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attributes.append({'label': name, 'value': value, 'url': url})
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def attributes_to_html(attributes):
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retval = '<table class="table table-striped">'
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for a in attributes:
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value = a.get('value')
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if 'url' in a:
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value = '<a href="' + a.get('url') + '">' + value + '</a>'
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retval = retval + '<tr><th>' + a.get('label') + '</th><td>' + value + '</td></tr>'
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retval = retval + '</table>'
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return retval
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