mirror of
https://github.com/searxng/searxng.git
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350 lines
10 KiB
Python
350 lines
10 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""This engine uses the Qwant API (https://api.qwant.com/v3) to implement Qwant
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-Web, -News, -Images and -Videos. The API is undocumented but can be reverse
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engineered by reading the network log of https://www.qwant.com/ queries.
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For Qwant's *web-search* two alternatives are implemented:
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- ``web``: uses the :py:obj:`api_url` which returns a JSON structure
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- ``web-lite``: uses the :py:obj:`web_lite_url` which returns a HTML page
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Configuration
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=============
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The engine has the following additional settings:
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- :py:obj:`qwant_categ`
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This implementation is used by different qwant engines in the :ref:`settings.yml
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<settings engine>`:
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.. code:: yaml
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- name: qwant
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qwant_categ: web-lite # alternatively use 'web'
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...
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- name: qwant news
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qwant_categ: news
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...
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- name: qwant images
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qwant_categ: images
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...
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- name: qwant videos
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qwant_categ: videos
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...
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Implementations
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===============
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"""
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from datetime import (
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datetime,
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timedelta,
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)
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from json import loads
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from urllib.parse import urlencode
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from flask_babel import gettext
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import babel
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import lxml
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from searx.exceptions import SearxEngineAPIException, SearxEngineTooManyRequestsException
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from searx.network import raise_for_httperror
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from searx.enginelib.traits import EngineTraits
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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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extract_text,
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)
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traits: EngineTraits
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# about
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about = {
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"website": 'https://www.qwant.com/',
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"wikidata_id": 'Q14657870',
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"official_api_documentation": None,
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"use_official_api": True,
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"require_api_key": False,
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"results": 'JSON',
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}
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# engine dependent config
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categories = []
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paging = True
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qwant_categ = None
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"""One of ``web``, ``news``, ``images`` or ``videos``"""
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safesearch = True
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# safe_search_map = {0: '&safesearch=0', 1: '&safesearch=1', 2: '&safesearch=2'}
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# fmt: off
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qwant_news_locales = [
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'ca_ad', 'ca_es', 'ca_fr', 'co_fr', 'de_at', 'de_ch', 'de_de', 'en_au',
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'en_ca', 'en_gb', 'en_ie', 'en_my', 'en_nz', 'en_us', 'es_ad', 'es_ar',
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'es_cl', 'es_co', 'es_es', 'es_mx', 'es_pe', 'eu_es', 'eu_fr', 'fc_ca',
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'fr_ad', 'fr_be', 'fr_ca', 'fr_ch', 'fr_fr', 'it_ch', 'it_it', 'nl_be',
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'nl_nl', 'pt_ad', 'pt_pt',
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]
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# fmt: on
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# search-url
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api_url = 'https://api.qwant.com/v3/search/'
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"""URL of Qwant's API (JSON)"""
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web_lite_url = 'https://lite.qwant.com/'
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"""URL of Qwant-Lite (HTML)"""
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def request(query, params):
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"""Qwant search request"""
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if not query:
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return None
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q_locale = traits.get_region(params["searxng_locale"], default='en_US')
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url = api_url + f'{qwant_categ}?'
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args = {'q': query}
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params['raise_for_httperror'] = False
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if qwant_categ == 'web-lite':
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# qwant-lite delivers only 5 pages maximum
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if params['pageno'] > 5:
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return None
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url = web_lite_url + '?'
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args['locale'] = q_locale.lower()
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args['l'] = q_locale.split('_')[0]
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args['s'] = params['safesearch']
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args['p'] = params['pageno']
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params['raise_for_httperror'] = True
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elif qwant_categ == 'images':
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args['locale'] = q_locale
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args['safesearch'] = params['safesearch']
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args['count'] = 50
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offset = (params['pageno'] - 1) * args['count']
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# count + offset must be lower than 250
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args['offset'] = min(offset, 199)
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else: # web, news, videos
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args['locale'] = q_locale
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args['safesearch'] = params['safesearch']
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args['count'] = 10
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offset = (params['pageno'] - 1) * args['count']
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# count + offset must be lower than 50
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args['offset'] = min(offset, 39)
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params['url'] = url + urlencode(args)
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return params
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def response(resp):
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if qwant_categ == 'web-lite':
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return parse_web_lite(resp)
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return parse_web_api(resp)
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def parse_web_lite(resp):
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"""Parse results from Qwant-Lite"""
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results = []
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dom = lxml.html.fromstring(resp.text)
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for item in eval_xpath_list(dom, '//section/article'):
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results.append(
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{
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'url': extract_text(eval_xpath(item, './span')),
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'title': extract_text(eval_xpath(item, './h2/a')),
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'content': extract_text(eval_xpath(item, './p')),
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}
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)
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return results
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def parse_web_api(resp):
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"""Parse results from Qwant's API"""
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# pylint: disable=too-many-locals, too-many-branches, too-many-statements
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results = []
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# load JSON result
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search_results = loads(resp.text)
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data = search_results.get('data', {})
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# check for an API error
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if search_results.get('status') != 'success':
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error_code = data.get('error_code')
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if error_code == 24:
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raise SearxEngineTooManyRequestsException()
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msg = ",".join(data.get('message', ['unknown']))
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raise SearxEngineAPIException(f"{msg} ({error_code})")
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# raise for other errors
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raise_for_httperror(resp)
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if qwant_categ == 'web':
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# The WEB query contains a list named 'mainline'. This list can contain
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# different result types (e.g. mainline[0]['type'] returns type of the
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# result items in mainline[0]['items']
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mainline = data.get('result', {}).get('items', {}).get('mainline', {})
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else:
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# Queries on News, Images and Videos do not have a list named 'mainline'
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# in the response. The result items are directly in the list
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# result['items'].
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mainline = data.get('result', {}).get('items', [])
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mainline = [
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{'type': qwant_categ, 'items': mainline},
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]
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# return empty array if there are no results
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if not mainline:
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return []
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for row in mainline:
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mainline_type = row.get('type', 'web')
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if mainline_type != qwant_categ:
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continue
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if mainline_type == 'ads':
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# ignore adds
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continue
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mainline_items = row.get('items', [])
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for item in mainline_items:
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title = item.get('title', None)
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res_url = item.get('url', None)
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if mainline_type == 'web':
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content = item['desc']
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results.append(
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{
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'title': title,
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'url': res_url,
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'content': content,
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}
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)
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elif mainline_type == 'news':
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pub_date = item['date']
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if pub_date is not None:
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pub_date = datetime.fromtimestamp(pub_date)
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news_media = item.get('media', [])
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img_src = None
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if news_media:
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img_src = news_media[0].get('pict', {}).get('url', None)
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results.append(
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{
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'title': title,
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'url': res_url,
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'publishedDate': pub_date,
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'img_src': img_src,
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}
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)
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elif mainline_type == 'images':
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thumbnail = item['thumbnail']
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img_src = item['media']
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results.append(
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{
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'title': title,
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'url': res_url,
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'template': 'images.html',
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'thumbnail_src': thumbnail,
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'img_src': img_src,
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}
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)
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elif mainline_type == 'videos':
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# some videos do not have a description: while qwant-video
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# returns an empty string, such video from a qwant-web query
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# miss the 'desc' key.
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d, s, c = item.get('desc'), item.get('source'), item.get('channel')
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content_parts = []
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if d:
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content_parts.append(d)
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if s:
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content_parts.append("%s: %s " % (gettext("Source"), s))
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if c:
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content_parts.append("%s: %s " % (gettext("Channel"), c))
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content = ' // '.join(content_parts)
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length = item['duration']
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if length is not None:
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length = timedelta(milliseconds=length)
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pub_date = item['date']
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if pub_date is not None:
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pub_date = datetime.fromtimestamp(pub_date)
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thumbnail = item['thumbnail']
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# from some locations (DE and others?) the s2 link do
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# response a 'Please wait ..' but does not deliver the thumbnail
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thumbnail = thumbnail.replace('https://s2.qwant.com', 'https://s1.qwant.com', 1)
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results.append(
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{
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'title': title,
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'url': res_url,
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'content': content,
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'publishedDate': pub_date,
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'thumbnail': thumbnail,
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'template': 'videos.html',
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'length': length,
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}
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)
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return results
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def fetch_traits(engine_traits: EngineTraits):
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# pylint: disable=import-outside-toplevel
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from searx import network
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from searx.locales import region_tag
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resp = network.get(about['website'])
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text = resp.text
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text = text[text.find('INITIAL_PROPS') :]
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text = text[text.find('{') : text.find('</script>')]
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q_initial_props = loads(text)
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q_locales = q_initial_props.get('locales')
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eng_tag_list = set()
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for country, v in q_locales.items():
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for lang in v['langs']:
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_locale = "{lang}_{country}".format(lang=lang, country=country)
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if qwant_categ == 'news' and _locale.lower() not in qwant_news_locales:
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# qwant-news does not support all locales from qwant-web:
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continue
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eng_tag_list.add(_locale)
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for eng_tag in eng_tag_list:
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try:
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sxng_tag = region_tag(babel.Locale.parse(eng_tag, sep='_'))
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except babel.UnknownLocaleError:
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print("ERROR: can't determine babel locale of quant's locale %s" % eng_tag)
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continue
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conflict = engine_traits.regions.get(sxng_tag)
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if conflict:
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if conflict != eng_tag:
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print("CONFLICT: babel %s --> %s, %s" % (sxng_tag, conflict, eng_tag))
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continue
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engine_traits.regions[sxng_tag] = eng_tag
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