forked from zaclys/searxng
Merge pull request #1792 from unixfox/google-images-internal-api
use the internal API for google images
This commit is contained in:
Alexandre Flament
GitHub
commit
1a7b6872b5
@ -1,28 +1,20 @@
|
||||
# SPDX-License-Identifier: AGPL-3.0-or-later
|
||||
# lint: pylint
|
||||
"""This is the implementation of the google images engine.
|
||||
"""This is the implementation of the google images engine using the google
|
||||
internal API used the Google Go Android app.
|
||||
|
||||
.. admonition:: Content-Security-Policy (CSP)
|
||||
This internal API offer results in
|
||||
|
||||
This engine needs to allow images from the `data URLs`_ (prefixed with the
|
||||
``data:`` scheme)::
|
||||
- JSON (_fmt:json)
|
||||
- Protobuf (_fmt:pb)
|
||||
- Protobuf compressed? (_fmt:pc)
|
||||
- HTML (_fmt:html)
|
||||
- Protobuf encoded in JSON (_fmt:jspb).
|
||||
|
||||
Header set Content-Security-Policy "img-src 'self' data: ;"
|
||||
|
||||
.. _data URLs:
|
||||
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
|
||||
"""
|
||||
|
||||
import re
|
||||
from urllib.parse import urlencode, unquote
|
||||
from lxml import html
|
||||
|
||||
from searx.utils import (
|
||||
eval_xpath,
|
||||
eval_xpath_list,
|
||||
eval_xpath_getindex,
|
||||
extract_text,
|
||||
)
|
||||
from urllib.parse import urlencode
|
||||
from json import loads
|
||||
|
||||
from searx.engines.google import (
|
||||
get_lang_info,
|
||||
@ -42,12 +34,12 @@ about = {
|
||||
"official_api_documentation": 'https://developers.google.com/custom-search',
|
||||
"use_official_api": False,
|
||||
"require_api_key": False,
|
||||
"results": 'HTML',
|
||||
"results": 'JSON',
|
||||
}
|
||||
|
||||
# engine dependent config
|
||||
categories = ['images', 'web']
|
||||
paging = False
|
||||
paging = True
|
||||
use_locale_domain = True
|
||||
time_range_support = True
|
||||
safesearch = True
|
||||
@ -56,74 +48,8 @@ send_accept_language_header = True
|
||||
filter_mapping = {0: 'images', 1: 'active', 2: 'active'}
|
||||
|
||||
|
||||
def scrap_out_thumbs(dom):
|
||||
"""Scrap out thumbnail data from <script> tags."""
|
||||
ret_val = {}
|
||||
for script in eval_xpath(dom, '//script[contains(., "_setImgSrc(")]'):
|
||||
_script = script.text
|
||||
# _setImgSrc('0','data:image\/jpeg;base64,\/9j\/4AAQSkZJR ....');
|
||||
_thumb_no, _img_data = _script[len("_setImgSrc(") : -2].split(",", 1)
|
||||
_thumb_no = _thumb_no.replace("'", "")
|
||||
_img_data = _img_data.replace("'", "")
|
||||
_img_data = _img_data.replace(r"\/", r"/")
|
||||
ret_val[_thumb_no] = _img_data.replace(r"\x3d", "=")
|
||||
return ret_val
|
||||
|
||||
|
||||
# [0, "-H96xjSoW5DsgM", ["https://encrypted-tbn0.gstatic.com/images?q...", 155, 324]
|
||||
# , ["https://assets.cdn.moviepilot.de/files/d3bf..", 576, 1200],
|
||||
_RE_JS_IMAGE_URL = re.compile(
|
||||
r'"'
|
||||
r'([^"]*)' # -H96xjSoW5DsgM
|
||||
r'",\s*\["'
|
||||
r'https://[^\.]*\.gstatic.com/images[^"]*' # https://encrypted-tbn0.gstatic.com/images?q...
|
||||
r'[^\[]*\["'
|
||||
r'(https?://[^"]*)' # https://assets.cdn.moviepilot.de/files/d3bf...
|
||||
)
|
||||
|
||||
|
||||
def parse_urls_img_from_js(dom):
|
||||
|
||||
# There are two HTML script tags starting with a JS function
|
||||
# 'AF_initDataCallback(...)'
|
||||
#
|
||||
# <script nonce="zscm+Ab/JzBk1Qd4GY6wGQ">
|
||||
# AF_initDataCallback({key: 'ds:0', hash: '1', data:[], sideChannel: {}});
|
||||
# </script>
|
||||
# <script nonce="zscm+Ab/JzBk1Qd4GY6wGQ">
|
||||
# AF_initDataCallback({key: 'ds:1', hash: '2', data:[null,[[["online_chips",[["the big",
|
||||
# ["https://encrypted-tbn0.gstatic.com/images?q...",null,null,true,[null,0],f
|
||||
# ...
|
||||
# </script>
|
||||
#
|
||||
# The second script contains the URLs of the images.
|
||||
|
||||
# The AF_initDataCallback(..) is called with very large dictionary, that
|
||||
# looks like JSON but it is not JSON since it contains JS variables and
|
||||
# constants like 'null' (we can't use a JSON parser for).
|
||||
#
|
||||
# The alternative is to parse the entire <script> and find all image URLs by
|
||||
# a regular expression.
|
||||
|
||||
img_src_script = eval_xpath_getindex(dom, '//script[contains(., "AF_initDataCallback({key: ")]', 1).text
|
||||
data_id_to_img_url = {}
|
||||
for data_id, url in _RE_JS_IMAGE_URL.findall(img_src_script):
|
||||
data_id_to_img_url[data_id] = url
|
||||
return data_id_to_img_url
|
||||
|
||||
|
||||
def get_img_url_by_data_id(data_id_to_img_url, img_node):
|
||||
"""Get full image URL by @data-id from parent element."""
|
||||
|
||||
data_id = eval_xpath_getindex(img_node, '../../../@data-id', 0)
|
||||
img_url = data_id_to_img_url.get(data_id, '')
|
||||
img_url = unquote(img_url.replace(r'\u00', r'%'))
|
||||
|
||||
return img_url
|
||||
|
||||
|
||||
def request(query, params):
|
||||
"""Google-Video search request"""
|
||||
"""Google-Image search request"""
|
||||
|
||||
lang_info = get_lang_info(params, supported_languages, language_aliases, False)
|
||||
|
||||
@ -132,7 +58,17 @@ def request(query, params):
|
||||
+ lang_info['subdomain']
|
||||
+ '/search'
|
||||
+ "?"
|
||||
+ urlencode({'q': query, 'tbm': "isch", **lang_info['params'], 'ie': "utf8", 'oe': "utf8", 'num': 30})
|
||||
+ urlencode(
|
||||
{
|
||||
'q': query,
|
||||
'tbm': "isch",
|
||||
**lang_info['params'],
|
||||
'ie': "utf8",
|
||||
'oe': "utf8",
|
||||
'asearch': 'isch',
|
||||
'async': '_fmt:json,p:1,ijn:' + str(params['pageno']),
|
||||
}
|
||||
)
|
||||
)
|
||||
|
||||
if params['time_range'] in time_range_dict:
|
||||
@ -141,9 +77,9 @@ def request(query, params):
|
||||
query_url += '&' + urlencode({'safe': filter_mapping[params['safesearch']]})
|
||||
params['url'] = query_url
|
||||
|
||||
params['cookies']['CONSENT'] = "YES+"
|
||||
params['headers'].update(lang_info['headers'])
|
||||
params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
|
||||
params['headers']['User-Agent'] = 'NSTN/3.60.474802233.release Dalvik/2.1.0 (Linux; U; Android 12; US) gzip'
|
||||
params['headers']['Accept'] = '*/*'
|
||||
return params
|
||||
|
||||
|
||||
@ -153,78 +89,34 @@ def response(resp):
|
||||
|
||||
detect_google_sorry(resp)
|
||||
|
||||
# convert the text to dom
|
||||
dom = html.fromstring(resp.text)
|
||||
img_bas64_map = scrap_out_thumbs(dom)
|
||||
data_id_to_img_url = parse_urls_img_from_js(dom)
|
||||
json_start = resp.text.find('{"ischj":')
|
||||
json_data = loads(resp.text[json_start:])
|
||||
|
||||
# parse results
|
||||
#
|
||||
# root element::
|
||||
# <div id="islmp" ..>
|
||||
# result div per image::
|
||||
# <div jsmodel="tTXmib"> / <div jsaction="..." data-id="..."
|
||||
# The data-id matches to a item in a json-data structure in::
|
||||
# <script nonce="I+vqelcy/01CKiBJi5Z1Ow">AF_initDataCallback({key: 'ds:1', ... data:function(){return [ ...
|
||||
# In this structure the link to the origin PNG, JPG or whatever is given
|
||||
# first link per image-div contains a <img> with the data-iid for bas64 encoded image data::
|
||||
# <img class="rg_i Q4LuWd" data-iid="0"
|
||||
# second link per image-div is the target link::
|
||||
# <a class="VFACy kGQAp" href="https://en.wikipedia.org/wiki/The_Sacrament_of_the_Last_Supper">
|
||||
# the second link also contains two div tags with the *description* and *publisher*::
|
||||
# <div class="WGvvNb">The Sacrament of the Last Supper ...</div>
|
||||
# <div class="fxgdke">en.wikipedia.org</div>
|
||||
for item in json_data["ischj"]["metadata"]:
|
||||
|
||||
root = eval_xpath(dom, '//div[@id="islmp"]')
|
||||
if not root:
|
||||
logger.error("did not find root element id='islmp'")
|
||||
return results
|
||||
result_item = {
|
||||
'url': item["result"]["referrer_url"],
|
||||
'title': item["result"]["page_title"],
|
||||
'content': item["text_in_grid"]["snippet"],
|
||||
'source': item["result"]["site_title"],
|
||||
'img_format': f'{item["original_image"]["width"]} x {item["original_image"]["height"]}',
|
||||
'img_src': item["original_image"]["url"],
|
||||
'thumbnail_src': item["thumbnail"]["url"],
|
||||
'template': 'images.html',
|
||||
}
|
||||
|
||||
root = root[0]
|
||||
for img_node in eval_xpath_list(root, './/img[contains(@class, "rg_i")]'):
|
||||
author = item["result"].get('iptc', {}).get('creator')
|
||||
if author:
|
||||
result_item['author'] = ', '.join(author)
|
||||
|
||||
img_alt = eval_xpath_getindex(img_node, '@alt', 0)
|
||||
copyright_notice = item["result"].get('iptc', {}).get('copyright_notice')
|
||||
if copyright_notice:
|
||||
result_item['source'] += ' / ' + copyright_notice
|
||||
|
||||
img_base64_id = eval_xpath(img_node, '@data-iid')
|
||||
if img_base64_id:
|
||||
img_base64_id = img_base64_id[0]
|
||||
thumbnail_src = img_bas64_map[img_base64_id]
|
||||
else:
|
||||
thumbnail_src = eval_xpath(img_node, '@src')
|
||||
if not thumbnail_src:
|
||||
thumbnail_src = eval_xpath(img_node, '@data-src')
|
||||
if thumbnail_src:
|
||||
thumbnail_src = thumbnail_src[0]
|
||||
else:
|
||||
thumbnail_src = ''
|
||||
file_size = item.get('gsa', {}).get('file_size')
|
||||
if file_size:
|
||||
result_item['source'] += ' (%s)' % file_size
|
||||
|
||||
link_node = eval_xpath_getindex(img_node, '../../../a[2]', 0)
|
||||
url = eval_xpath_getindex(link_node, '@href', 0, None)
|
||||
if url is None:
|
||||
logger.error("missing @href in node: %s", html.tostring(link_node))
|
||||
continue
|
||||
|
||||
pub_nodes = eval_xpath(link_node, './div/div')
|
||||
pub_descr = img_alt
|
||||
pub_source = ''
|
||||
if pub_nodes:
|
||||
pub_descr = extract_text(pub_nodes[0])
|
||||
pub_source = extract_text(pub_nodes[1])
|
||||
|
||||
src_url = get_img_url_by_data_id(data_id_to_img_url, img_node)
|
||||
if not src_url:
|
||||
src_url = thumbnail_src
|
||||
|
||||
results.append(
|
||||
{
|
||||
'url': url,
|
||||
'title': img_alt,
|
||||
'content': pub_descr,
|
||||
'source': pub_source,
|
||||
'img_src': src_url,
|
||||
'thumbnail_src': thumbnail_src,
|
||||
'template': 'images.html',
|
||||
}
|
||||
)
|
||||
results.append(result_item)
|
||||
|
||||
return results
|
||||
|
||||
Loading…
Reference in New Issue
Block a user