mirror of
https://github.com/searxng/searxng.git
synced 2024-11-22 12:10:11 +01:00
Markus Heiser
Adam Tauber
parent
410c2f903d
commit
16f8ec894a
@ -1,97 +1,205 @@
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"""
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Google (Images)
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# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Google (Images)
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@website https://www.google.com
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@provide-api yes (https://developers.google.com/custom-search/)
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:website: https://images.google.com (redirected to subdomain www.)
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:provide-api: yes (https://developers.google.com/custom-search/)
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:using-api: not the offical, since it needs registration to another service
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:results: HTML
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:stable: no
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:template: images.html
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:parse: url, title, content, source, thumbnail_src, img_src
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For detailed description of the *REST-full* API see: `Query Parameter
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Definitions`_.
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.. _admonition:: Content-Security-Policy (CSP)
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This engine needs to allow images from the `data URLs`_ (prefixed with the
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``data:` scheme).::
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Header set Content-Security-Policy "img-src 'self' data: ;"
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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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@using-api no
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@results HTML chunks with JSON inside
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@stable no
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@parse url, title, img_src
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"""
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from datetime import date, timedelta
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from json import loads
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from lxml import html
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from searx.url_utils import urlencode
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from flask_babel import gettext
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from searx import logger
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from searx.url_utils import urlencode, urlparse
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from searx.utils import eval_xpath
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from searx.engines.xpath import extract_text
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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_country
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, google_domains
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, time_range_dict
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)
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logger = logger.getChild('google images')
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# engine dependent config
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categories = ['images']
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paging = True
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safesearch = True
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paging = False
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language_support = True
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use_locale_domain = True
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time_range_support = True
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number_of_results = 100
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safesearch = True
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search_url = 'https://www.google.com/search'\
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'?{query}'\
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'&tbm=isch'\
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'&yv=2'\
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'&{search_options}'
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time_range_attr = "qdr:{range}"
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time_range_custom_attr = "cdr:1,cd_min:{start},cd_max{end}"
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time_range_dict = {'day': 'd',
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'week': 'w',
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'month': 'm'}
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filter_mapping = {
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0 : 'images',
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1 : 'active',
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2 : 'active'
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}
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def scrap_out_thumbs(dom):
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"""Scrap out thumbnail data from <script> tags.
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"""
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ret_val = dict()
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for script in eval_xpath(dom, '//script[contains(., "_setImgSrc(")]'):
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_script = script.text
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# _setImgSrc('0','data:image\/jpeg;base64,\/9j\/4AAQSkZJR ....');
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_thumb_no, _img_data = _script[len("_setImgSrc("):-2].split(",",1)
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_thumb_no = _thumb_no.replace("'","")
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_img_data = _img_data.replace("'","")
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_img_data = _img_data.replace(r"\/", r"/")
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ret_val[_thumb_no] = _img_data.replace(r"\x3d", "=")
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return ret_val
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# do search-request
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def request(query, params):
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search_options = {
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'ijn': params['pageno'] - 1,
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'start': (params['pageno'] - 1) * number_of_results
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}
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"""Google-Video search request"""
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language, country, lang_country = get_lang_country(
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# pylint: disable=undefined-variable
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params, supported_languages, language_aliases
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)
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subdomain = 'www.' + google_domains.get(country.upper(), 'google.com')
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query_url = 'https://'+ subdomain + '/search' + "?" + urlencode({
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'q': query,
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'tbm': "isch",
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'hl': lang_country,
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'lr': "lang_" + language,
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'ie': "utf8",
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'oe': "utf8",
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'num': 30,
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})
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if params['time_range'] in time_range_dict:
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search_options['tbs'] = time_range_attr.format(range=time_range_dict[params['time_range']])
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elif params['time_range'] == 'year':
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now = date.today()
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then = now - timedelta(days=365)
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start = then.strftime('%m/%d/%Y')
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end = now.strftime('%m/%d/%Y')
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search_options['tbs'] = time_range_custom_attr.format(start=start, end=end)
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query_url += '&' + urlencode({'tbs': 'qdr:' + time_range_dict[params['time_range']]})
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if params['safesearch']:
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query_url += '&' + urlencode({'safe': filter_mapping[params['safesearch']]})
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if safesearch and params['safesearch']:
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search_options['safe'] = 'on'
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params['url'] = search_url.format(query=urlencode({'q': query}),
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search_options=urlencode(search_options))
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params['url'] = query_url
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logger.debug("query_url --> %s", query_url)
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params['headers']['Accept-Language'] = (
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"%s,%s;q=0.8,%s;q=0.5" % (lang_country, language, language))
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logger.debug(
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"HTTP Accept-Language --> %s", params['headers']['Accept-Language'])
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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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#params['google_subdomain'] = subdomain
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return params
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# get response from search-request
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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
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resp_url = urlparse(resp.url)
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if resp_url.netloc == 'sorry.google.com' or resp_url.path == '/sorry/IndexRedirect':
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raise RuntimeWarning('sorry.google.com')
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if resp_url.path.startswith('/sorry'):
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raise RuntimeWarning(gettext('CAPTCHA required'))
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# which subdomain ?
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# subdomain = resp.search_params.get('google_subdomain')
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# convert the text to dom
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dom = html.fromstring(resp.text)
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img_bas64_map = scrap_out_thumbs(dom)
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# parse results
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for result in dom.xpath('//div[contains(@class, "rg_meta")]/text()'):
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#
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# root element::
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# <div id="islmp" ..>
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# result div per image::
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# <div jsmodel="tTXmib"> / <div jsaction="..." data-id="..."
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# The data-id matches to a item in a json-data structure in::
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# <script nonce="I+vqelcy/01CKiBJi5Z1Ow">AF_initDataCallback({key: 'ds:1', ... data:function(){return [ ...
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# In this structure the ling to the origin PNG, JPG or whatever is given
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# (we do not blow out the link there, you could still implement that)
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# first link per image-div contains a <img> with the data-iid for bas64 encoded image data::
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# <img class="rg_i Q4LuWd" data-iid="0"
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# second link per image-div is the target link::
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# <a class="VFACy kGQAp" href="https://en.wikipedia.org/wiki/The_Sacrament_of_the_Last_Supper">
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# the second link also contains two div tags with the *description* and *publisher*::
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# <div class="WGvvNb">The Sacrament of the Last Supper ...</div>
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# <div class="fxgdke">en.wikipedia.org</div>
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root = eval_xpath(dom, '//div[@id="islmp"]')
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if not root:
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logger.error("did not find root element id='islmp'")
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return results
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root = root[0]
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for img_node in eval_xpath(root, './/img[contains(@class, "rg_i")]'):
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try:
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metadata = loads(result)
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img_alt = eval_xpath(img_node, '@alt')[0]
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img_format = metadata.get('ity', '')
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img_width = metadata.get('ow', '')
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img_height = metadata.get('oh', '')
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if img_width and img_height:
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img_format += " {0}x{1}".format(img_width, img_height)
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img_base64_id = eval_xpath(img_node, '@data-iid')
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if img_base64_id:
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img_base64_id = img_base64_id[0]
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thumbnail_src = img_bas64_map[img_base64_id]
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else:
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thumbnail_src = eval_xpath(img_node, '@src')
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if not thumbnail_src:
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thumbnail_src = eval_xpath(img_node, '@data-src')
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if thumbnail_src:
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thumbnail_src = thumbnail_src[0]
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else:
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thumbnail_src = ''
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source = metadata.get('st', '')
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source_url = metadata.get('isu', '')
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if source_url:
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source += " ({0})".format(source_url)
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link_node = eval_xpath(img_node, '../../../a[2]')[0]
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url = eval_xpath(link_node, '@href')[0]
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results.append({'url': metadata['ru'],
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'title': metadata['pt'],
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'content': metadata.get('s', ''),
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'source': source,
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'img_format': img_format,
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'thumbnail_src': metadata['tu'],
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'img_src': metadata['ou'],
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'template': 'images.html'})
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pub_nodes = eval_xpath(link_node, './div/div')
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pub_descr = img_alt
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pub_source = ''
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if pub_nodes:
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pub_descr = extract_text(pub_nodes[0])
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pub_source = extract_text(pub_nodes[1])
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except:
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results.append({
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'url': url,
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'title': img_alt,
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'content': pub_descr,
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'source': pub_source,
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'img_src': url,
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# 'img_format': img_format,
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'thumbnail_src': thumbnail_src,
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'template': 'images.html'
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})
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except Exception as e: # pylint: disable=broad-except
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logger.error(e, exc_info=True)
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#from lxml import etree
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#logger.debug(etree.tostring(img_node, pretty_print=True))
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#import pdb
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#pdb.set_trace()
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continue
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return results
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