diff options
Diffstat (limited to 'searx/engines/google_news.py')
| -rw-r--r-- | searx/engines/google_news.py | 230 |
1 files changed, 172 insertions, 58 deletions
diff --git a/searx/engines/google_news.py b/searx/engines/google_news.py index 9c837b4..ff39543 100644 --- a/searx/engines/google_news.py +++ b/searx/engines/google_news.py @@ -1,86 +1,200 @@ -""" - Google (News) +# SPDX-License-Identifier: AGPL-3.0-or-later +"""Google (News) + +For detailed description of the *REST-full* API see: `Query Parameter +Definitions`_. Not all parameters can be appied: + +- num_ : the number of search results is ignored +- save_ : is ignored / Google-News results are always *SafeSearch* - @website https://news.google.com - @provide-api no +.. _Query Parameter Definitions: + https://developers.google.com/custom-search/docs/xml_results#WebSearch_Query_Parameter_Definitions + +.. _num: https://developers.google.com/custom-search/docs/xml_results#numsp +.. _save: https://developers.google.com/custom-search/docs/xml_results#safesp - @using-api no - @results HTML - @stable no - @parse url, title, content, publishedDate """ +# pylint: disable=invalid-name, missing-function-docstring + +import binascii +import re +from urllib.parse import urlencode +from base64 import b64decode +from random import random from lxml import html -from searx.engines.google import _fetch_supported_languages, supported_languages_url -from searx.url_utils import urlencode -from searx.utils import match_language -# search-url +from searx import logger +from searx.utils import ( + eval_xpath, + eval_xpath_list, + eval_xpath_getindex, + extract_text, +) + +# pylint: disable=unused-import +from searx.engines.google import ( + supported_languages_url, + _fetch_supported_languages, +) +# pylint: enable=unused-import + +from searx.engines.google import ( + get_lang_info, + detect_google_sorry, +) + +# about +about = { + "website": 'https://news.google.com', + "wikidata_id": 'Q12020', + "official_api_documentation": 'https://developers.google.com/custom-search', + "use_official_api": False, + "require_api_key": False, + "results": 'HTML', +} + +logger = logger.getChild('google news') + +# compared to other google engines google-news has a different time range +# support. The time range is included in the search term. +time_range_dict = { + 'day': 'when:1d', + 'week': 'when:7d', + 'month': 'when:1m', + 'year': 'when:1y', +} + +# engine dependent config + categories = ['news'] -paging = True -language_support = True -safesearch = True +paging = False +use_locale_domain = True time_range_support = True -number_of_results = 10 -search_url = 'https://www.google.com/search'\ - '?{query}'\ - '&tbm=nws'\ - '&gws_rd=cr'\ - '&{search_options}' -time_range_attr = "qdr:{range}" -time_range_dict = {'day': 'd', - 'week': 'w', - 'month': 'm', - 'year': 'y'} +# Google-News results are always *SafeSearch*. Option 'safesearch' is set to +# False here, otherwise checker will report safesearch-errors:: +# +# safesearch : results are identitical for safesearch=0 and safesearch=2 +safesearch = False - -# do search-request def request(query, params): + """Google-News search request""" + + lang_info = get_lang_info( + # pylint: disable=undefined-variable + params, supported_languages, language_aliases, False + ) + + # google news has only one domain + lang_info['subdomain'] = 'news.google.com' - search_options = { - 'start': (params['pageno'] - 1) * number_of_results - } + ceid = "%s:%s" % (lang_info['country'], lang_info['language']) - if params['time_range'] in time_range_dict: - search_options['tbs'] = time_range_attr.format(range=time_range_dict[params['time_range']]) + # google news redirects en to en-US + if lang_info['params']['hl'] == 'en': + lang_info['params']['hl'] = 'en-US' - if safesearch and params['safesearch']: - search_options['safe'] = 'on' + # Very special to google-news compared to other google engines, the time + # range is included in the search term. + if params['time_range']: + query += ' ' + time_range_dict[params['time_range']] - params['url'] = search_url.format(query=urlencode({'q': query}), - search_options=urlencode(search_options)) + query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({ + 'q': query, + **lang_info['params'], + 'ie': "utf8", + 'oe': "utf8", + 'ucbcb': 1, + 'gl': lang_info['country'], + }) + ('&ceid=%s' % ceid) # ceid includes a ':' character which must not be urlencoded - if params['language'] != 'all': - language = match_language(params['language'], supported_languages, language_aliases).split('-')[0] - if language: - params['url'] += '&lr=lang_' + language + logger.debug("query_url --> %s", query_url) + params['url'] = query_url + + logger.debug("HTTP header Accept-Language --> %s", lang_info.get('Accept-Language')) + + params['cookies']['CONSENT'] = "PENDING+" + str(random()*100) + params['headers'].update(lang_info['headers']) + params['headers']['Accept'] = ( + 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8' + ) return params -# get response from search-request def response(resp): + """Get response from google's search request""" results = [] + detect_google_sorry(resp) + + # convert the text to dom dom = html.fromstring(resp.text) - # parse results - for result in dom.xpath('//div[@class="g"]|//div[@class="g _cy"]'): - try: - r = { - 'url': result.xpath('.//a[@class="l lLrAF"]')[0].attrib.get("href"), - 'title': ''.join(result.xpath('.//a[@class="l lLrAF"]//text()')), - 'content': ''.join(result.xpath('.//div[@class="st"]//text()')), - } - except: - continue - - imgs = result.xpath('.//img/@src') - if len(imgs) and not imgs[0].startswith('data'): - r['img_src'] = imgs[0] - - results.append(r) + for result in eval_xpath_list(dom, '//div[@class="xrnccd"]'): + + # The first <a> tag in the <article> contains the link to the + # article The href attribute of the <a> is a google internal link, + # we can't use. The real link is hidden in the jslog attribute: + # + # <a ... + # jslog="95014; 4:https://www.cnn.com/.../index.html; track:click" + # href="./articles/CAIiENu3nGS...?hl=en-US&gl=US&ceid=US%3Aen" + # ... /> + + jslog = eval_xpath_getindex(result, './article/a/@jslog', 0) + url = re.findall('http[^;]*', jslog) + if url: + url = url[0] + else: + # The real URL is base64 encoded in the json attribute: + # jslog="95014; 5:W251bGwsbnVsbCxudW...giXQ==; track:click" + jslog = jslog.split(";")[1].split(':')[1].strip() + try: + padding = (4 -(len(jslog) % 4)) * "=" + jslog = b64decode(jslog + padding) + except binascii.Error: + # URL cant be read, skip this result + continue + + # now we have : b'[null, ... null,"https://www.cnn.com/.../index.html"]' + url = re.findall('http[^;"]*', str(jslog))[0] + + # the first <h3> tag in the <article> contains the title of the link + title = extract_text(eval_xpath(result, './article/h3[1]')) + + # the first <div> tag in the <article> contains the content of the link + content = extract_text(eval_xpath(result, './article/div[1]')) + + # the second <div> tag contains origin publisher and the publishing date + + pub_date = extract_text(eval_xpath(result, './article/div[2]//time')) + pub_origin = extract_text(eval_xpath(result, './article/div[2]//a')) + + pub_info = [] + if pub_origin: + pub_info.append(pub_origin) + if pub_date: + # The pub_date is mostly a string like 'yesertday', not a real + # timezone date or time. Therefore we can't use publishedDate. + pub_info.append(pub_date) + pub_info = ', '.join(pub_info) + if pub_info: + content = pub_info + ': ' + content + + # The image URL is located in a preceding sibling <img> tag, e.g.: + # "https://lh3.googleusercontent.com/DjhQh7DMszk.....z=-p-h100-w100" + # These URL are long but not personalized (double checked via tor). + + img_src = extract_text(result.xpath('preceding-sibling::a/figure/img/@src')) + + results.append({ + 'url': url, + 'title': title, + 'content': content, + 'img_src': img_src, + }) # return results return results |