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# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""This is the implementation of the google images engine.
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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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.. _data URLs:
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
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"""
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from urllib.parse import urlencode, unquote
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from lxml import html
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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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from searx.engines.google import (
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get_lang_info,
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time_range_dict,
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detect_google_sorry,
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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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# about
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about = {
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"website": 'https://images.google.com',
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"wikidata_id": 'Q521550',
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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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# engine dependent config
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categories = ['images']
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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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safesearch = True
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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 = {}
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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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def scrap_img_by_id(script, data_id):
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"""Get full image URL by data-id in parent element
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"""
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img_url = ''
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_script = script.split('\n')
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for i, line in enumerate(_script):
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if 'gstatic.com/images' in line and data_id in line and i + 1 < len(_script):
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url_line = _script[i + 1]
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img_url = url_line.split('"')[1]
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img_url = unquote(img_url.replace(r'\u00', r'%'))
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return img_url
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def request(query, params):
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"""Google-Video search request"""
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lang_info = get_lang_info(
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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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query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
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'q': query,
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'tbm': "isch",
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**lang_info['params'],
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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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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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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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img_bas64_map = scrap_out_thumbs(dom)
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img_src_script = eval_xpath_getindex(
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dom, '//script[contains(., "AF_initDataCallback({key: ")]', 1).text
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# parse results
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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 link to the origin PNG, JPG or whatever is given
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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_list(root, './/img[contains(@class, "rg_i")]'):
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img_alt = eval_xpath_getindex(img_node, '@alt', 0)
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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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link_node = eval_xpath_getindex(img_node, '../../../a[2]', 0)
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url = eval_xpath_getindex(link_node, '@href', 0)
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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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img_src_id = eval_xpath_getindex(img_node, '../../../@data-id', 0)
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src_url = scrap_img_by_id(img_src_script, img_src_id)
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if not src_url:
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src_url = thumbnail_src
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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': 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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return results
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