mirror of
https://github.com/searxng/searxng
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306 lines
7.7 KiB
Python
306 lines
7.7 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""This is the implementation of the Google News engine.
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Google News has a different region handling compared to Google WEB.
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- the ``ceid`` argument has to be set (:py:obj:`ceid_list`)
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- the hl_ argument has to be set correctly (and different to Google WEB)
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- the gl_ argument is mandatory
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If one of this argument is not set correctly, the request is redirected to
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CONSENT dialog::
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https://consent.google.com/m?continue=
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The google news API ignores some parameters from the common :ref:`google API`:
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- num_ : the number of search results is ignored / there is no paging all
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results for a query term are in the first response.
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- save_ : is ignored / Google-News results are always *SafeSearch*
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.. _hl: https://developers.google.com/custom-search/docs/xml_results#hlsp
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.. _gl: https://developers.google.com/custom-search/docs/xml_results#glsp
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.. _num: https://developers.google.com/custom-search/docs/xml_results#numsp
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.. _save: https://developers.google.com/custom-search/docs/xml_results#safesp
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"""
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from typing import TYPE_CHECKING
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from urllib.parse import urlencode
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import base64
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from lxml import html
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import babel
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from searx import locales
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from searx.utils import (
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eval_xpath,
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eval_xpath_list,
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eval_xpath_getindex,
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extract_text,
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)
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from searx.engines.google import fetch_traits as _fetch_traits # pylint: disable=unused-import
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from searx.engines.google import (
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get_google_info,
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detect_google_sorry,
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)
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from searx.enginelib.traits import EngineTraits
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if TYPE_CHECKING:
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import logging
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logger: logging.Logger
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traits: EngineTraits
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# about
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about = {
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"website": 'https://news.google.com',
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"wikidata_id": 'Q12020',
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"official_api_documentation": 'https://developers.google.com/custom-search',
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"use_official_api": False,
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"require_api_key": False,
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"results": 'HTML',
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}
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# engine dependent config
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categories = ['news']
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paging = False
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time_range_support = False
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# Google-News results are always *SafeSearch*. Option 'safesearch' is set to
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# False here, otherwise checker will report safesearch-errors::
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#
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# safesearch : results are identical for safesearch=0 and safesearch=2
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safesearch = True
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# send_accept_language_header = True
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def request(query, params):
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"""Google-News search request"""
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sxng_locale = params.get('searxng_locale', 'en-US')
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ceid = locales.get_engine_locale(sxng_locale, traits.custom['ceid'], default='US:en')
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google_info = get_google_info(params, traits)
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google_info['subdomain'] = 'news.google.com' # google news has only one domain
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ceid_region, ceid_lang = ceid.split(':')
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ceid_lang, ceid_suffix = (
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ceid_lang.split('-')
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+ [
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None,
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]
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)[:2]
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google_info['params']['hl'] = ceid_lang
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if ceid_suffix and ceid_suffix not in ['Hans', 'Hant']:
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if ceid_region.lower() == ceid_lang:
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google_info['params']['hl'] = ceid_lang + '-' + ceid_region
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else:
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google_info['params']['hl'] = ceid_lang + '-' + ceid_suffix
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elif ceid_region.lower() != ceid_lang:
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if ceid_region in ['AT', 'BE', 'CH', 'IL', 'SA', 'IN', 'BD', 'PT']:
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google_info['params']['hl'] = ceid_lang
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else:
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google_info['params']['hl'] = ceid_lang + '-' + ceid_region
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google_info['params']['lr'] = 'lang_' + ceid_lang.split('-')[0]
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google_info['params']['gl'] = ceid_region
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query_url = (
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'https://'
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+ google_info['subdomain']
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+ "/search?"
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+ urlencode(
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{
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'q': query,
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**google_info['params'],
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}
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)
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# ceid includes a ':' character which must not be urlencoded
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+ ('&ceid=%s' % ceid)
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)
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params['url'] = query_url
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params['cookies'] = google_info['cookies']
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params['headers'].update(google_info['headers'])
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return params
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def response(resp):
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"""Get response from google's search request"""
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results = []
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detect_google_sorry(resp)
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# convert the text to dom
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dom = html.fromstring(resp.text)
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for result in eval_xpath_list(dom, '//div[@class="xrnccd"]'):
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# The first <a> tag in the <article> contains the link to the article
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# The href attribute of the <a> tag is a google internal link, we have
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# to decode
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href = eval_xpath_getindex(result, './article/a/@href', 0)
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href = href.split('?')[0]
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href = href.split('/')[-1]
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href = base64.urlsafe_b64decode(href + '====')
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href = href[href.index(b'http') :].split(b'\xd2')[0]
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href = href.decode()
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title = extract_text(eval_xpath(result, './article/h3[1]'))
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# The pub_date is mostly a string like 'yesterday', not a real
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# timezone date or time. Therefore we can't use publishedDate.
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pub_date = extract_text(eval_xpath(result, './article//time'))
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pub_origin = extract_text(eval_xpath(result, './article//a[@data-n-tid]'))
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content = ' / '.join([x for x in [pub_origin, pub_date] if x])
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# The image URL is located in a preceding sibling <img> tag, e.g.:
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# "https://lh3.googleusercontent.com/DjhQh7DMszk.....z=-p-h100-w100"
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# These URL are long but not personalized (double checked via tor).
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img_src = extract_text(result.xpath('preceding-sibling::a/figure/img/@src'))
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results.append(
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{
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'url': href,
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'title': title,
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'content': content,
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'img_src': img_src,
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}
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)
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# return results
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return results
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ceid_list = [
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'AE:ar',
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'AR:es-419',
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'AT:de',
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'AU:en',
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'BD:bn',
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'BE:fr',
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'BE:nl',
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'BG:bg',
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'BR:pt-419',
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'BW:en',
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'CA:en',
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'CA:fr',
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'CH:de',
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'CH:fr',
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'CL:es-419',
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'CN:zh-Hans',
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'CO:es-419',
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'CU:es-419',
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'CZ:cs',
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'DE:de',
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'EG:ar',
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'ES:es',
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'ET:en',
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'FR:fr',
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'GB:en',
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'GH:en',
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'GR:el',
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'HK:zh-Hant',
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'HU:hu',
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'ID:en',
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'ID:id',
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'IE:en',
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'IL:en',
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'IL:he',
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'IN:bn',
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'IN:en',
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'IN:hi',
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'IN:ml',
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'IN:mr',
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'IN:ta',
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'IN:te',
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'IT:it',
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'JP:ja',
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'KE:en',
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'KR:ko',
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'LB:ar',
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'LT:lt',
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'LV:en',
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'LV:lv',
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'MA:fr',
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'MX:es-419',
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'MY:en',
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'NA:en',
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'NG:en',
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'NL:nl',
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'NO:no',
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'NZ:en',
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'PE:es-419',
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'PH:en',
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'PK:en',
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'PL:pl',
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'PT:pt-150',
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'RO:ro',
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'RS:sr',
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'RU:ru',
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'SA:ar',
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'SE:sv',
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'SG:en',
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'SI:sl',
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'SK:sk',
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'SN:fr',
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'TH:th',
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'TR:tr',
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'TW:zh-Hant',
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'TZ:en',
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'UA:ru',
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'UA:uk',
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'UG:en',
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'US:en',
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'US:es-419',
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'VE:es-419',
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'VN:vi',
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'ZA:en',
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'ZW:en',
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]
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"""List of region/language combinations supported by Google News. Values of the
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``ceid`` argument of the Google News REST API."""
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_skip_values = [
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'ET:en', # english (ethiopia)
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'ID:en', # english (indonesia)
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'LV:en', # english (latvia)
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]
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_ceid_locale_map = {'NO:no': 'nb-NO'}
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def fetch_traits(engine_traits: EngineTraits):
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_fetch_traits(engine_traits, add_domains=False)
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engine_traits.custom['ceid'] = {}
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for ceid in ceid_list:
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if ceid in _skip_values:
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continue
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region, lang = ceid.split(':')
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x = lang.split('-')
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if len(x) > 1:
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if x[1] not in ['Hant', 'Hans']:
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lang = x[0]
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sxng_locale = _ceid_locale_map.get(ceid, lang + '-' + region)
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try:
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locale = babel.Locale.parse(sxng_locale, sep='-')
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except babel.UnknownLocaleError:
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print("ERROR: %s -> %s is unknown by babel" % (ceid, sxng_locale))
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continue
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engine_traits.custom['ceid'][locales.region_tag(locale)] = ceid
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