[fix] revise of the google-Video engine

This revise is based on the methods developed in the revise of the google engine
(see commit 410c2f9).

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser 2021-01-22 17:16:46 +01:00
parent f4a17acb7a
commit 89b3050b5c
2 changed files with 184 additions and 59 deletions

View file

@ -179,7 +179,8 @@ PYLINT_FILES=\
searx/engines/deviantart.py \
searx/engines/digg.py \
searx/engines/google.py \
searx/engines/google_news.py
searx/engines/google_news.py \
searx/engines/google_videos.py
test.pylint: pyenvinstall
$(call cmd,pylint,$(PYLINT_FILES))

View file

@ -1,13 +1,58 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
"""
Google (Videos)
Google (Viedo)
For detailed description of the *REST-full* API see: `Query Parameter
Definitions`_. Not all parameters can be appied.
.. _admonition:: Content-Security-Policy (CSP)
This engine needs to allow images from the `data URLs`_ (prefixed with the
``data:` scheme).::
Header set Content-Security-Policy "img-src 'self' data: ;"
.. _Query Parameter Definitions:
https://developers.google.com/custom-search/docs/xml_results#WebSearch_Query_Parameter_Definitions
.. _data URLs:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
"""
from datetime import date, timedelta
from urllib.parse import urlencode
from lxml import html
from searx.utils import extract_text, eval_xpath, eval_xpath_list, eval_xpath_getindex
# pylint: disable=invalid-name, missing-function-docstring
import re
from urllib.parse import urlencode, urlparse
from lxml import html
from searx import logger
from searx.exceptions import SearxEngineCaptchaException
from searx.utils import (
eval_xpath,
eval_xpath_list,
extract_text,
)
from searx.engines.google import (
get_lang_country,
google_domains,
time_range_dict,
filter_mapping,
results_xpath,
g_section_with_header,
title_xpath,
href_xpath,
content_xpath,
suggestion_xpath,
spelling_suggestion_xpath
)
# pylint: disable=unused-import
from searx.engines.google import (
supported_languages_url
, _fetch_supported_languages
)
# pylint: enable=unused-import
# about
about = {
@ -17,83 +62,162 @@ about = {
"use_official_api": False,
"require_api_key": False,
"results": 'HTML',
"template": 'video.html',
"parse": ('url', 'title', 'content', 'thumbnail')
}
logger = logger.getChild('google video')
# engine dependent config
categories = ['videos']
paging = True
safesearch = True
paging = False
language_support = True
use_locale_domain = True
time_range_support = True
number_of_results = 10
safesearch = True
search_url = 'https://www.google.com/search'\
'?q={query}'\
'&tbm=vid'\
'&{search_options}'
time_range_attr = "qdr:{range}"
time_range_custom_attr = "cdr:1,cd_min:{start},cd_max{end}"
time_range_dict = {'day': 'd',
'week': 'w',
'month': 'm'}
RE_CACHE = {}
def _re(regexpr):
"""returns compiled regular expression"""
RE_CACHE[regexpr] = RE_CACHE.get(regexpr, re.compile(regexpr))
return RE_CACHE[regexpr]
def scrap_out_thumbs(dom):
"""Scrap out thumbnail data from <script> tags.
"""
ret_val = dict()
thumb_name = 'vidthumb'
for script in eval_xpath(dom, '//script[contains(., "_setImagesSrc")]'):
_script = script.text
# var s='data:image/jpeg;base64, ...'
_imgdata = _re("s='([^']*)").findall( _script)
if not _imgdata:
continue
# var ii=['vidthumb4','vidthumb7']
for _vidthumb in _re(r"(%s\d+)" % thumb_name).findall(_script):
# At least the equal sign in the URL needs to be decoded
ret_val[_vidthumb] = _imgdata[0].replace(r"\x3d", "=")
# {google.ldidly=-1;google.ldi={"vidthumb8":"https://...
for script in eval_xpath(dom, '//script[contains(., "google.ldi={")]'):
_script = script.text
for key_val in _re(r'"%s\d+\":\"[^\"]*"' % thumb_name).findall( _script) :
match = _re(r'"(%s\d+)":"(.*)"' % thumb_name).search(key_val)
if match:
# At least the equal sign in the URL needs to be decoded
ret_val[match.group(1)] = match.group(2).replace(r"\u003d", "=")
logger.debug("found %s imgdata for: %s", thumb_name, ret_val.keys())
return ret_val
# do search-request
def request(query, params):
search_options = {
'ijn': params['pageno'] - 1,
'start': (params['pageno'] - 1) * number_of_results
}
"""Google-Video search request"""
language, country, lang_country = get_lang_country(
# pylint: disable=undefined-variable
params, supported_languages, language_aliases
)
subdomain = 'www.' + google_domains.get(country.upper(), 'google.com')
query_url = 'https://'+ subdomain + '/search' + "?" + urlencode({
'q': query,
'tbm': "vid",
'hl': lang_country,
'lr': "lang_" + language,
'ie': "utf8",
'oe': "utf8",
})
if params['time_range'] in time_range_dict:
search_options['tbs'] = time_range_attr.format(range=time_range_dict[params['time_range']])
elif params['time_range'] == 'year':
now = date.today()
then = now - timedelta(days=365)
start = then.strftime('%m/%d/%Y')
end = now.strftime('%m/%d/%Y')
search_options['tbs'] = time_range_custom_attr.format(start=start, end=end)
query_url += '&' + urlencode({'tbs': 'qdr:' + time_range_dict[params['time_range']]})
if params['safesearch']:
query_url += '&' + urlencode({'safe': filter_mapping[params['safesearch']]})
if safesearch and params['safesearch']:
search_options['safe'] = 'on'
params['url'] = search_url.format(query=urlencode({'q': query}),
search_options=urlencode(search_options))
params['url'] = query_url
logger.debug("query_url --> %s", query_url)
# en-US,en;q=0.8,en;q=0.5
params['headers']['Accept-Language'] = (
"%s,%s;q=0.8,%s;q=0.5" % (lang_country, language, language))
logger.debug(
"HTTP Accept-Language --> %s", params['headers']['Accept-Language'])
params['headers']['Accept'] = (
'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
)
#params['google_subdomain'] = subdomain
return params
# get response from search-request
def response(resp):
"""Get response from google's search request"""
results = []
# detect google sorry
resp_url = urlparse(resp.url)
if resp_url.netloc == 'sorry.google.com' or resp_url.path == '/sorry/IndexRedirect':
raise SearxEngineCaptchaException()
if resp_url.path.startswith('/sorry'):
raise SearxEngineCaptchaException()
# which subdomain ?
# subdomain = resp.search_params.get('google_subdomain')
# convert the text to dom
dom = html.fromstring(resp.text)
vidthumb_imgdata = scrap_out_thumbs(dom)
# parse results
for result in eval_xpath_list(dom, '//div[@class="g"]'):
for result in eval_xpath_list(dom, results_xpath):
title = extract_text(eval_xpath(result, './/h3'))
url = eval_xpath_getindex(result, './/div[@class="r"]/a/@href', 0)
content = extract_text(eval_xpath(result, './/span[@class="st"]'))
# google *sections*
if extract_text(eval_xpath(result, g_section_with_header)):
logger.debug("ingoring <g-section-with-header>")
continue
# get thumbnails
script = str(dom.xpath('//script[contains(., "_setImagesSrc")]')[0].text)
ids = result.xpath('.//div[@class="s"]//img/@id')
if len(ids) > 0:
thumbnails_data = \
re.findall('s=\'(.*?)(?:\\\\[a-z,1-9,\\\\]+\'|\')\;var ii=\[(?:|[\'vidthumb\d+\',]+)\'' + ids[0],
script)
tmp = []
if len(thumbnails_data) != 0:
tmp = re.findall('(data:image/jpeg;base64,[a-z,A-Z,0-9,/,\+]+)', thumbnails_data[0])
thumbnail = ''
if len(tmp) != 0:
thumbnail = tmp[-1]
title = extract_text(eval_xpath(result, title_xpath)[0])
url = eval_xpath(result, href_xpath)[0]
c_node = eval_xpath(result, content_xpath)[0]
# append result
results.append({'url': url,
'title': title,
'content': content,
'thumbnail': thumbnail,
'template': 'videos.html'})
# <img id="vidthumb1" ...>
img_id = eval_xpath(c_node, './div[1]//a/g-img/img/@id')
if not img_id:
continue
img_id = img_id[0]
img_src = vidthumb_imgdata.get(img_id, None)
if not img_src:
logger.error("no vidthumb imgdata for: %s" % img_id)
img_src = eval_xpath(c_node, './div[1]//a/g-img/img/@src')[0]
duration = extract_text(eval_xpath(c_node, './div[1]//a/span'))
content = extract_text(eval_xpath(c_node, './div[2]/span'))
pub_info = extract_text(eval_xpath(c_node, './div[2]/div'))
if len(duration) > 3:
content = duration + " - " + content
if pub_info:
content = content + " (%s)" % pub_info
results.append({
'url': url,
'title': title,
'content': content,
'thumbnail': img_src,
'template': 'videos.html',
})
# parse suggestion
for suggestion in eval_xpath(dom, suggestion_xpath):
# append suggestion
results.append({'suggestion': extract_text(suggestion)})
for correction in eval_xpath(dom, spelling_suggestion_xpath):
results.append({'correction': extract_text(correction)})
return results