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https://github.com/searxng/searxng.git
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[mod] bing: add time_range support & upgrade to data_type: traits_v1
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser
parent
c9cd376186
commit
d0f465e6fa
6 changed files with 366 additions and 1968 deletions
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@ -4,16 +4,28 @@
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- https://github.com/searx/searx/issues/2019#issuecomment-648227442
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"""
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# pylint: disable=too-many-branches
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# pylint: disable=too-many-branches, invalid-name
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from typing import TYPE_CHECKING
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import datetime
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import re
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from urllib.parse import urlencode, urlparse, parse_qs
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import uuid
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from urllib.parse import urlencode
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from lxml import html
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from searx.utils import eval_xpath, extract_text, eval_xpath_list, match_language, eval_xpath_getindex
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from searx.network import multi_requests, Request
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import babel
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import babel.languages
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from searx.utils import eval_xpath, extract_text, eval_xpath_list, eval_xpath_getindex
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from searx import network
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from searx.locales import language_tag, region_tag
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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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@ -25,56 +37,124 @@ about = {
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"results": 'HTML',
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}
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send_accept_language_header = True
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"""Bing tries to guess user's language and territory from the HTTP
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Accept-Language. Optional the user can select a search-language (can be
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different to the UI language) and a region (market code)."""
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# engine dependent config
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categories = ['general', 'web']
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paging = True
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time_range_support = False
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safesearch = False
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send_accept_language_header = True
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supported_languages_url = 'https://www.bing.com/account/general'
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language_aliases = {}
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time_range_support = True
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safesearch = True
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safesearch_types = {2: 'STRICT', 1: 'DEMOTE', 0: 'OFF'} # cookie: ADLT=STRICT
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# search-url
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base_url = 'https://www.bing.com/'
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base_url = 'https://www.bing.com/search'
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"""Bing (Web) search URL"""
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# initial query: https://www.bing.com/search?q=foo&search=&form=QBLH
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inital_query = 'search?{query}&search=&form=QBLH'
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# following queries: https://www.bing.com/search?q=foo&search=&first=11&FORM=PERE
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page_query = 'search?{query}&search=&first={offset}&FORM=PERE'
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bing_traits_url = 'https://learn.microsoft.com/en-us/bing/search-apis/bing-web-search/reference/market-codes'
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"""Bing (Web) search API description"""
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def _get_offset_from_pageno(pageno):
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return (pageno - 1) * 10 + 1
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def set_bing_cookies(params, engine_language, engine_region, SID):
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# set cookies
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# -----------
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params['cookies']['_EDGE_V'] = '1'
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# _EDGE_S: F=1&SID=3A5253BD6BCA609509B741876AF961CA&mkt=zh-tw
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_EDGE_S = [
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'F=1',
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'SID=%s' % SID,
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'mkt=%s' % engine_region.lower(),
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'ui=%s' % engine_language.lower(),
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]
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params['cookies']['_EDGE_S'] = '&'.join(_EDGE_S)
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logger.debug("cookie _EDGE_S=%s", params['cookies']['_EDGE_S'])
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# "_EDGE_CD": "m=zh-tw",
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_EDGE_CD = [ # pylint: disable=invalid-name
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'm=%s' % engine_region.lower(), # search region: zh-cn
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'u=%s' % engine_language.lower(), # UI: en-us
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]
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params['cookies']['_EDGE_CD'] = '&'.join(_EDGE_CD) + ';'
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logger.debug("cookie _EDGE_CD=%s", params['cookies']['_EDGE_CD'])
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SRCHHPGUSR = [ # pylint: disable=invalid-name
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'SRCHLANG=%s' % engine_language,
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# Trying to set ADLT cookie here seems not to have any effect, I assume
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# there is some age verification by a cookie (and/or session ID) needed,
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# to disable the SafeSearch.
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'ADLT=%s' % safesearch_types.get(params['safesearch'], 'DEMOTE'),
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]
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params['cookies']['SRCHHPGUSR'] = '&'.join(SRCHHPGUSR)
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logger.debug("cookie SRCHHPGUSR=%s", params['cookies']['SRCHHPGUSR'])
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def request(query, params):
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"""Assemble a Bing-Web request."""
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offset = _get_offset_from_pageno(params.get('pageno', 1))
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engine_region = traits.get_region(params['searxng_locale'], 'en-US')
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engine_language = traits.get_language(params['searxng_locale'], 'en')
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# logger.debug("params['pageno'] --> %s", params.get('pageno'))
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# logger.debug(" offset --> %s", offset)
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SID = uuid.uuid1().hex.upper()
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CVID = uuid.uuid1().hex.upper()
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search_string = page_query
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if offset == 1:
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search_string = inital_query
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set_bing_cookies(params, engine_language, engine_region, SID)
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if params['language'] == 'all':
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lang = 'EN'
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else:
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lang = match_language(params['language'], supported_languages, language_aliases)
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# build URL query
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# ---------------
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query = 'language:{} {}'.format(lang.split('-')[0].upper(), query)
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# query term
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page = int(params.get('pageno', 1))
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query_params = {
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# fmt: off
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'q': query,
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'pq': query,
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'cvid': CVID,
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'qs': 'n',
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'sp': '-1'
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# fmt: on
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}
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search_path = search_string.format(query=urlencode({'q': query}), offset=offset)
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if offset > 1:
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referer = base_url + inital_query.format(query=urlencode({'q': query}))
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# page
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if page > 1:
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referer = base_url + '?' + urlencode(query_params)
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params['headers']['Referer'] = referer
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logger.debug("headers.Referer --> %s", referer)
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params['url'] = base_url + search_path
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params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
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query_params['first'] = _get_offset_from_pageno(page)
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if page == 2:
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query_params['FORM'] = 'PERE'
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elif page > 2:
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query_params['FORM'] = 'PERE%s' % (page - 2)
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filters = ''
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if params['time_range']:
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query_params['filt'] = 'custom'
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if params['time_range'] == 'day':
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filters = 'ex1:"ez1"'
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elif params['time_range'] == 'week':
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filters = 'ex1:"ez2"'
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elif params['time_range'] == 'month':
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filters = 'ex1:"ez3"'
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elif params['time_range'] == 'year':
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epoch_1970 = datetime.date(1970, 1, 1)
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today_no = (datetime.date.today() - epoch_1970).days
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filters = 'ex1:"ez5_%s_%s"' % (today_no - 365, today_no)
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params['url'] = base_url + '?' + urlencode(query_params)
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if filters:
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params['url'] = params['url'] + '&filters=' + filters
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return params
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@ -111,7 +191,8 @@ def response(resp):
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url_cite = extract_text(eval_xpath(result, './/div[@class="b_attribution"]/cite'))
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# Bing can shorten the URL either at the end or in the middle of the string
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if (
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url_cite.startswith('https://')
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url_cite
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and url_cite.startswith('https://')
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and '…' not in url_cite
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and '...' not in url_cite
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and '›' not in url_cite
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@ -131,9 +212,9 @@ def response(resp):
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# resolve all Bing redirections in parallel
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request_list = [
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Request.get(u, allow_redirects=False, headers=resp.search_params['headers']) for u in url_to_resolve
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network.Request.get(u, allow_redirects=False, headers=resp.search_params['headers']) for u in url_to_resolve
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]
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response_list = multi_requests(request_list)
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response_list = network.multi_requests(request_list)
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for i, redirect_response in enumerate(response_list):
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if not isinstance(redirect_response, Exception):
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results[url_to_resolve_index[i]]['url'] = redirect_response.headers['location']
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@ -161,94 +242,43 @@ def response(resp):
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return results
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# get supported languages from their site
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def _fetch_supported_languages(resp):
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lang_tags = set()
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dom = html.fromstring(resp.text)
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lang_links = eval_xpath(dom, '//div[@id="language-section"]//li')
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for _li in lang_links:
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href = eval_xpath(_li, './/@href')[0]
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(_scheme, _netloc, _path, _params, query, _fragment) = urlparse(href)
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query = parse_qs(query, keep_blank_values=True)
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# fmt: off
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setlang = query.get('setlang', [None, ])[0]
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# example: 'mn-Cyrl-MN' --> '['mn', 'Cyrl-MN']
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lang, nation = (setlang.split('-', maxsplit=1) + [None,])[:2] # fmt: skip
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# fmt: on
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tag = lang + '-' + nation if nation else lang
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lang_tags.add(tag)
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return list(lang_tags)
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def fetch_traits(engine_traits: EngineTraits):
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"""Fetch languages and regions from bing."""
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"""Fetch languages and regions from Bing-Web."""
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# pylint: disable=import-outside-toplevel, disable=too-many-branches,
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# pylint: disable=too-many-locals, too-many-statements
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xpath_market_codes = '//table[1]/tbody/tr/td[3]'
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# xpath_country_codes = '//table[2]/tbody/tr/td[2]'
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xpath_language_codes = '//table[3]/tbody/tr/td[2]'
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engine_traits.data_type = 'supported_languages' # deprecated
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_fetch_traits(engine_traits, bing_traits_url, xpath_language_codes, xpath_market_codes)
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import babel
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import babel.languages
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from searx import network
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from searx.locales import get_offical_locales, language_tag, region_tag
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from searx.utils import gen_useragent
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headers = {
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'User-Agent': gen_useragent(),
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'Accept-Language': "en-US,en;q=0.5", # bing needs to set the English language
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}
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resp = network.get('https://www.bing.com/account/general', headers=headers)
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def _fetch_traits(engine_traits: EngineTraits, url: str, xpath_language_codes: str, xpath_market_codes: str):
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# insert alias to map from a language (zh) to a language + script (zh_Hans)
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engine_traits.languages['zh'] = 'zh-hans'
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resp = network.get(url)
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if not resp.ok:
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print("ERROR: response from peertube is not OK.")
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dom = html.fromstring(resp.text)
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# Selector to get items from "Display language"
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map_lang = {'jp': 'ja'}
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for td in eval_xpath(dom, xpath_language_codes):
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eng_lang = td.text
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lang_map = {
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'prs': 'fa', # Persian
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'pt_BR': 'pt', # Portuguese (Brasil)
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'pt_PT': 'pt', # Portuguese (Portugal)
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'ca-ES-VALENCIA': 'ca', # Catalan (Spain, Valencian)
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}
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unknow_langs = [
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'quc', # K'iche'
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'nso', # Sesotho sa Leboa
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'tn', # Setswana
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]
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for div in eval_xpath(dom, '//div[@id="limit-languages"]//input/..'):
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eng_lang = eval_xpath(div, './/input/@value')[0]
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if eng_lang in unknow_langs:
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if eng_lang in ('en-gb', 'pt-br'):
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# language 'en' is already in the list and a language 'en-gb' can't
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# be handled in SearXNG, same with pt-br which is covered by pt-pt.
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continue
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eng_lang = lang_map.get(eng_lang, eng_lang)
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label = extract_text(eval_xpath(div, './/label'))
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# The 'language:xx' query string in the request function (above) does
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# only support the language codes from the "Display languages" list.
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# Examples of items from the "Display languages" not sopported in the
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# query string: zh_Hans --> zh / sr_latn --> sr
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#
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# eng_lang = eng_lang.split('_')[0]
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babel_lang = map_lang.get(eng_lang, eng_lang).replace('-', '_')
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try:
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sxng_tag = language_tag(babel.Locale.parse(eng_lang.replace('-', '_'), sep='_'))
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sxng_tag = language_tag(babel.Locale.parse(babel_lang))
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except babel.UnknownLocaleError:
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print("ERROR: %s (%s) is unknown by babel" % (label, eng_lang))
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print("ERROR: language (%s) is unknown by babel" % (eng_lang))
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continue
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conflict = engine_traits.languages.get(sxng_tag)
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if conflict:
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if conflict != eng_lang:
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@ -256,25 +286,27 @@ def fetch_traits(engine_traits: EngineTraits):
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continue
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engine_traits.languages[sxng_tag] = eng_lang
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engine_traits.languages['zh'] = 'zh_Hans'
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map_region = {
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'en-ID': 'id_ID',
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'no-NO': 'nb_NO',
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}
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# regiones
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for td in eval_xpath(dom, xpath_market_codes):
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eng_region = td.text
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babel_region = map_region.get(eng_region, eng_region).replace('-', '_')
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for a in eval_xpath(dom, '//div[@id="region-section-content"]//li/a'):
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href = eval_xpath(a, './/@href')[0]
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# lang_name = extract_text(a)
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query = urlparse(href)[4]
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query = parse_qs(query, keep_blank_values=True)
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cc = query.get('cc')[0] # pylint:disable=invalid-name
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if cc == 'clear':
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if eng_region == 'en-WW':
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engine_traits.all_locale = eng_region
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continue
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# Assert babel supports this locales
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sxng_locales = get_offical_locales(cc.upper(), engine_traits.languages.keys())
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if not sxng_locales:
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# print("ERROR: can't map from bing country %s (%s) to a babel region." % (a.text_content().strip(), cc))
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try:
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sxng_tag = region_tag(babel.Locale.parse(babel_region))
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except babel.UnknownLocaleError:
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print("ERROR: region (%s) is unknown by babel" % (eng_region))
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continue
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for sxng_locale in sxng_locales:
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engine_traits.regions[region_tag(sxng_locale)] = cc
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conflict = engine_traits.regions.get(sxng_tag)
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if conflict:
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if conflict != eng_region:
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print("CONFLICT: babel %s --> %s, %s" % (sxng_tag, conflict, eng_region))
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continue
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engine_traits.regions[sxng_tag] = eng_region
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