mirror of https://github.com/searxng/searxng.git
197 lines
6.1 KiB
Python
197 lines
6.1 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""Google (News)
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For detailed description of the *REST-full* API see: `Query Parameter
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Definitions`_. Not all parameters can be appied:
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- num_ : the number of search results is ignored
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- save_ : is ignored / Google-News results are always *SafeSearch*
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.. _Query Parameter Definitions:
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https://developers.google.com/custom-search/docs/xml_results#WebSearch_Query_Parameter_Definitions
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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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# pylint: disable=invalid-name, missing-function-docstring
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import binascii
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import re
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from urllib.parse import urlencode
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from base64 import b64decode
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from lxml import html
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from searx import logger
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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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# pylint: disable=unused-import
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from searx.engines.google import (
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supported_languages_url,
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_fetch_supported_languages,
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)
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# pylint: enable=unused-import
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from searx.engines.google import (
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get_lang_info,
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detect_google_sorry,
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)
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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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logger = logger.getChild('google news')
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# compared to other google engines google-news has a different time range
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# support. The time range is included in the search term.
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time_range_dict = {
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'day': 'when:1d',
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'week': 'when:7d',
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'month': 'when:1m',
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'year': 'when:1y',
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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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use_locale_domain = True
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time_range_support = True
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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 identitical for safesearch=0 and safesearch=2
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safesearch = False
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def request(query, params):
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"""Google-News search request"""
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lang_info = get_lang_info(
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# pylint: disable=undefined-variable
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params, supported_languages, language_aliases, False
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)
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logger.debug(
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"HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])
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# google news has only one domain
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lang_info['subdomain'] = 'news.google.com'
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ceid = "%s:%s" % (lang_info['country'], lang_info['language'])
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# google news redirects en to en-US
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if lang_info['hl'] == 'en':
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lang_info['hl'] = 'en-US'
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# Very special to google-news compared to other google engines, the time
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# range is included in the search term.
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if params['time_range']:
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query += ' ' + time_range_dict[params['time_range']]
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query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
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'q': query,
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**lang_info['params'],
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'ie': "utf8",
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'oe': "utf8",
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'gl': lang_info['country'],
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}) + ('&ceid=%s' % ceid) # ceid includes a ':' character which must not be urlencoded
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params['url'] = query_url
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params['headers'].update(lang_info['headers'])
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params['headers']['Accept'] = (
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'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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)
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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
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# article The href attribute of the <a> is a google internal link,
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# we can't use. The real link is hidden in the jslog attribute:
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#
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# <a ...
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# jslog="95014; 4:https://www.cnn.com/.../index.html; track:click"
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# href="./articles/CAIiENu3nGS...?hl=en-US&gl=US&ceid=US%3Aen"
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# ... />
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jslog = eval_xpath_getindex(result, './article/a/@jslog', 0)
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url = re.findall('http[^;]*', jslog)
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if url:
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url = url[0]
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else:
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# The real URL is base64 encoded in the json attribute:
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# jslog="95014; 5:W251bGwsbnVsbCxudW...giXQ==; track:click"
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jslog = jslog.split(";")[1].split(':')[1].strip()
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try:
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padding = (4 -(len(jslog) % 4)) * "="
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jslog = b64decode(jslog + padding)
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except binascii.Error:
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# URL cant be read, skip this result
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continue
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# now we have : b'[null, ... null,"https://www.cnn.com/.../index.html"]'
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url = re.findall('http[^;"]*', str(jslog))[0]
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# the first <h3> tag in the <article> contains the title of the link
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title = extract_text(eval_xpath(result, './article/h3[1]'))
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# the first <div> tag in the <article> contains the content of the link
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content = extract_text(eval_xpath(result, './article/div[1]'))
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# the second <div> tag contains origin publisher and the publishing date
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pub_date = extract_text(eval_xpath(result, './article/div[2]//time'))
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pub_origin = extract_text(eval_xpath(result, './article/div[2]//a'))
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pub_info = []
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if pub_origin:
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pub_info.append(pub_origin)
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if pub_date:
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# The pub_date is mostly a string like 'yesertday', not a real
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# timezone date or time. Therefore we can't use publishedDate.
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pub_info.append(pub_date)
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pub_info = ', '.join(pub_info)
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if pub_info:
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content = pub_info + ': ' + content
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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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'url': url,
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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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# return results
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return results
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