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Ponysearch/searx/engines/qwant.py
Markus d3a795c7e7 [fix] engine: qwant - detect captchaUrl and raise SearxEngineCaptchaException 
So far a CAPTCHA was not recognized in the response of the qwant engine and a
SearxEngineAPIException was raised by mistake.  With this patch a CAPTCHA
redirect is recognized and the correct SearxEngineCaptchaException is raised.

Closes: https://github.com/searxng/searxng/issues/3806
Signed-off-by: Markus <markus@venom.fritz.box>
2024-09-15 14:45:23 +02:00

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# SPDX-License-Identifier: AGPL-3.0-or-later
"""This engine uses the Qwant API (https://api.qwant.com/v3) to implement Qwant
-Web, -News, -Images and -Videos. The API is undocumented but can be reverse
engineered by reading the network log of https://www.qwant.com/ queries.
For Qwant's *web-search* two alternatives are implemented:
- ``web``: uses the :py:obj:`api_url` which returns a JSON structure
- ``web-lite``: uses the :py:obj:`web_lite_url` which returns a HTML page
Configuration
=============
The engine has the following additional settings:
- :py:obj:`qwant_categ`
This implementation is used by different qwant engines in the :ref:`settings.yml
<settings engine>`:
.. code:: yaml
- name: qwant
qwant_categ: web-lite # alternatively use 'web'
...
- name: qwant news
qwant_categ: news
...
- name: qwant images
qwant_categ: images
...
- name: qwant videos
qwant_categ: videos
...
Implementations
===============
"""
from datetime import (
datetime,
timedelta,
)
from json import loads
from urllib.parse import urlencode
from flask_babel import gettext
import babel
import lxml
from searx.exceptions import (
SearxEngineAPIException,
SearxEngineTooManyRequestsException,
SearxEngineCaptchaException,
)
from searx.network import raise_for_httperror
from searx.enginelib.traits import EngineTraits
from searx.utils import (
eval_xpath,
eval_xpath_list,
extract_text,
)
traits: EngineTraits
# about
about = {
"website": 'https://www.qwant.com/',
"wikidata_id": 'Q14657870',
"official_api_documentation": None,
"use_official_api": True,
"require_api_key": False,
"results": 'JSON',
}
# engine dependent config
categories = []
paging = True
max_page = 5
"""5 pages maximum (``&p=5``): Trying to do more just results in an improper
redirect"""
qwant_categ = None
"""One of ``web-lite`` (or ``web``), ``news``, ``images`` or ``videos``"""
safesearch = True
# safe_search_map = {0: '&safesearch=0', 1: '&safesearch=1', 2: '&safesearch=2'}
# fmt: off
qwant_news_locales = [
'ca_ad', 'ca_es', 'ca_fr', 'co_fr', 'de_at', 'de_ch', 'de_de', 'en_au',
'en_ca', 'en_gb', 'en_ie', 'en_my', 'en_nz', 'en_us', 'es_ad', 'es_ar',
'es_cl', 'es_co', 'es_es', 'es_mx', 'es_pe', 'eu_es', 'eu_fr', 'fc_ca',
'fr_ad', 'fr_be', 'fr_ca', 'fr_ch', 'fr_fr', 'it_ch', 'it_it', 'nl_be',
'nl_nl', 'pt_ad', 'pt_pt',
]
# fmt: on
# search-url
api_url = 'https://api.qwant.com/v3/search/'
"""URL of Qwant's API (JSON)"""
web_lite_url = 'https://lite.qwant.com/'
"""URL of Qwant-Lite (HTML)"""
def request(query, params):
"""Qwant search request"""
if not query:
return None
q_locale = traits.get_region(params["searxng_locale"], default='en_US')
url = api_url + f'{qwant_categ}?'
args = {'q': query}
params['raise_for_httperror'] = False
if qwant_categ == 'web-lite':
url = web_lite_url + '?'
args['locale'] = q_locale.lower()
args['l'] = q_locale.split('_')[0]
args['s'] = params['safesearch']
args['p'] = params['pageno']
params['raise_for_httperror'] = True
elif qwant_categ == 'images':
args['locale'] = q_locale
args['safesearch'] = params['safesearch']
args['count'] = 50
args['offset'] = (params['pageno'] - 1) * args['count']
else: # web, news, videos
args['locale'] = q_locale
args['safesearch'] = params['safesearch']
args['count'] = 10
args['offset'] = (params['pageno'] - 1) * args['count']
params['url'] = url + urlencode(args)
return params
def response(resp):
if qwant_categ == 'web-lite':
return parse_web_lite(resp)
return parse_web_api(resp)
def parse_web_lite(resp):
"""Parse results from Qwant-Lite"""
results = []
dom = lxml.html.fromstring(resp.text)
for item in eval_xpath_list(dom, '//section/article'):
if eval_xpath(item, "./span[contains(@class, 'tooltip')]"):
# ignore randomly interspersed advertising adds
continue
results.append(
{
'url': extract_text(eval_xpath(item, "./span[contains(@class, 'url partner')]")),
'title': extract_text(eval_xpath(item, './h2/a')),
'content': extract_text(eval_xpath(item, './p')),
}
)
return results
def parse_web_api(resp):
"""Parse results from Qwant's API"""
# pylint: disable=too-many-locals, too-many-branches, too-many-statements
results = []
# load JSON result
search_results = loads(resp.text)
data = search_results.get('data', {})
# check for an API error
if search_results.get('status') != 'success':
error_code = data.get('error_code')
if error_code == 24:
raise SearxEngineTooManyRequestsException()
if search_results.get("data", {}).get("error_data", {}).get("captchaUrl") is not None:
raise SearxEngineCaptchaException()
msg = ",".join(data.get('message', ['unknown']))
raise SearxEngineAPIException(f"{msg} ({error_code})")
# raise for other errors
raise_for_httperror(resp)
if qwant_categ == 'web':
# The WEB query contains a list named 'mainline'. This list can contain
# different result types (e.g. mainline[0]['type'] returns type of the
# result items in mainline[0]['items']
mainline = data.get('result', {}).get('items', {}).get('mainline', {})
else:
# Queries on News, Images and Videos do not have a list named 'mainline'
# in the response. The result items are directly in the list
# result['items'].
mainline = data.get('result', {}).get('items', [])
mainline = [
{'type': qwant_categ, 'items': mainline},
]
# return empty array if there are no results
if not mainline:
return []
for row in mainline:
mainline_type = row.get('type', 'web')
if mainline_type != qwant_categ:
continue
if mainline_type == 'ads':
# ignore adds
continue
mainline_items = row.get('items', [])
for item in mainline_items:
title = item.get('title', None)
res_url = item.get('url', None)
if mainline_type == 'web':
content = item['desc']
results.append(
{
'title': title,
'url': res_url,
'content': content,
}
)
elif mainline_type == 'news':
pub_date = item['date']
if pub_date is not None:
pub_date = datetime.fromtimestamp(pub_date)
news_media = item.get('media', [])
thumbnail = None
if news_media:
thumbnail = news_media[0].get('pict', {}).get('url', None)
results.append(
{
'title': title,
'url': res_url,
'publishedDate': pub_date,
'thumbnail': thumbnail,
}
)
elif mainline_type == 'images':
thumbnail = item['thumbnail']
img_src = item['media']
results.append(
{
'title': title,
'url': res_url,
'template': 'images.html',
'thumbnail_src': thumbnail,
'img_src': img_src,
'resolution': f"{item['width']} x {item['height']}",
'img_format': item.get('thumb_type'),
}
)
elif mainline_type == 'videos':
# some videos do not have a description: while qwant-video
# returns an empty string, such video from a qwant-web query
# miss the 'desc' key.
d, s, c = item.get('desc'), item.get('source'), item.get('channel')
content_parts = []
if d:
content_parts.append(d)
if s:
content_parts.append("%s: %s " % (gettext("Source"), s))
if c:
content_parts.append("%s: %s " % (gettext("Channel"), c))
content = ' // '.join(content_parts)
length = item['duration']
if length is not None:
length = timedelta(milliseconds=length)
pub_date = item['date']
if pub_date is not None:
pub_date = datetime.fromtimestamp(pub_date)
thumbnail = item['thumbnail']
# from some locations (DE and others?) the s2 link do
# response a 'Please wait ..' but does not deliver the thumbnail
thumbnail = thumbnail.replace('https://s2.qwant.com', 'https://s1.qwant.com', 1)
results.append(
{
'title': title,
'url': res_url,
'content': content,
'publishedDate': pub_date,
'thumbnail': thumbnail,
'template': 'videos.html',
'length': length,
}
)
return results
def fetch_traits(engine_traits: EngineTraits):
# pylint: disable=import-outside-toplevel
from searx import network
from searx.locales import region_tag
from searx.utils import extr
resp = network.get(about['website'])
json_string = extr(resp.text, 'INITIAL_PROPS = ', '</script>')
q_initial_props = loads(json_string)
q_locales = q_initial_props.get('locales')
eng_tag_list = set()
for country, v in q_locales.items():
for lang in v['langs']:
_locale = "{lang}_{country}".format(lang=lang, country=country)
if qwant_categ == 'news' and _locale.lower() not in qwant_news_locales:
# qwant-news does not support all locales from qwant-web:
continue
eng_tag_list.add(_locale)
for eng_tag in eng_tag_list:
try:
sxng_tag = region_tag(babel.Locale.parse(eng_tag, sep='_'))
except babel.UnknownLocaleError:
print("ERROR: can't determine babel locale of quant's locale %s" % eng_tag)
continue
conflict = engine_traits.regions.get(sxng_tag)
if conflict:
if conflict != eng_tag:
print("CONFLICT: babel %s --> %s, %s" % (sxng_tag, conflict, eng_tag))
continue
engine_traits.regions[sxng_tag] = eng_tag
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