mirror of
https://github.com/searxng/searxng
synced 2024-11-01 15:40:29 +00:00
266 lines
8.0 KiB
Python
266 lines
8.0 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
|
|
"""Presearch supports the search types listed in :py:obj:`search_type` (general,
|
|
images, videos, news).
|
|
|
|
Configured ``presarch`` engines:
|
|
|
|
.. code:: yaml
|
|
|
|
- name: presearch
|
|
engine: presearch
|
|
search_type: search
|
|
categories: [general, web]
|
|
|
|
- name: presearch images
|
|
...
|
|
search_type: images
|
|
categories: [images, web]
|
|
|
|
- name: presearch videos
|
|
...
|
|
search_type: videos
|
|
categories: [general, web]
|
|
|
|
- name: presearch news
|
|
...
|
|
search_type: news
|
|
categories: [news, web]
|
|
|
|
.. hint::
|
|
|
|
By default Presearch's video category is intentionally placed into::
|
|
|
|
categories: [general, web]
|
|
|
|
|
|
Search type ``video``
|
|
=====================
|
|
|
|
The results in the video category are most often links to pages that contain a
|
|
video, for instance many links from Preasearch's video category link content
|
|
from facebook (aka Meta) or Twitter (aka X). Since these are not real links to
|
|
video streams SearXNG can't use the video template for this and if SearXNG can't
|
|
use this template, then the user doesn't want to see these hits in the videos
|
|
category.
|
|
|
|
|
|
Languages & Regions
|
|
===================
|
|
|
|
In Presearch there are languages for the UI and regions for narrowing down the
|
|
search. If we set "auto" for the region in the WEB-UI of Presearch and cookie
|
|
``use_local_search_results=false``, then the defaults are set for both (the
|
|
language and the region) from the ``Accept-Language`` header.
|
|
|
|
Since the region is already "auto" by default, we only need to set the
|
|
``use_local_search_results`` cookie and send the ``Accept-Language`` header. We
|
|
have to set these values in both requests we send to Presearch; in the first
|
|
request to get the request-ID from Presearch and in the final request to get the
|
|
result list (see ``send_accept_language_header``).
|
|
|
|
|
|
Implementations
|
|
===============
|
|
|
|
"""
|
|
|
|
from urllib.parse import urlencode
|
|
from searx import locales
|
|
from searx.network import get
|
|
from searx.utils import gen_useragent, html_to_text
|
|
|
|
about = {
|
|
"website": "https://presearch.io",
|
|
"wikidiata_id": "Q7240905",
|
|
"official_api_documentation": "https://docs.presearch.io/nodes/api",
|
|
"use_official_api": False,
|
|
"require_api_key": False,
|
|
"results": "JSON",
|
|
}
|
|
paging = True
|
|
safesearch = True
|
|
time_range_support = True
|
|
send_accept_language_header = True
|
|
categories = ["general", "web"] # general, images, videos, news
|
|
|
|
search_type = "search"
|
|
"""must be any of ``search``, ``images``, ``videos``, ``news``"""
|
|
|
|
base_url = "https://presearch.com"
|
|
safesearch_map = {0: 'false', 1: 'true', 2: 'true'}
|
|
|
|
|
|
def init(_):
|
|
if search_type not in ['search', 'images', 'videos', 'news']:
|
|
raise ValueError(f'presearch search_type: {search_type}')
|
|
|
|
|
|
def _get_request_id(query, params):
|
|
|
|
args = {
|
|
"q": query,
|
|
"page": params["pageno"],
|
|
}
|
|
|
|
if params["time_range"]:
|
|
args["time"] = params["time_range"]
|
|
|
|
url = f"{base_url}/{search_type}?{urlencode(args)}"
|
|
|
|
headers = {
|
|
'User-Agent': gen_useragent(),
|
|
'Cookie': (
|
|
f"b=1;"
|
|
f" presearch_session=;"
|
|
f" use_local_search_results=false;"
|
|
f" use_safe_search={safesearch_map[params['safesearch']]}"
|
|
),
|
|
}
|
|
if params['searxng_locale'] != 'all':
|
|
l = locales.get_locale(params['searxng_locale'])
|
|
|
|
# Presearch narrows down the search by region. In SearXNG when the user
|
|
# does not set a region (e.g. 'en-CA' / canada) we cannot hand over a
|
|
# region.
|
|
|
|
# We could possibly use searx.locales.get_official_locales to determine
|
|
# in which regions this language is an official one, but then we still
|
|
# wouldn't know which region should be given more weight / Presearch
|
|
# performs an IP-based geolocation of the user, we don't want that in
|
|
# SearXNG ;-)
|
|
|
|
if l.territory:
|
|
headers['Accept-Language'] = f"{l.language}-{l.territory},{l.language};" "q=0.9,*;" "q=0.5"
|
|
|
|
resp_text = get(url, headers=headers).text # type: ignore
|
|
|
|
for line in resp_text.split("\n"):
|
|
if "window.searchId = " in line:
|
|
return line.split("= ")[1][:-1].replace('"', "")
|
|
|
|
return None
|
|
|
|
|
|
def request(query, params):
|
|
request_id = _get_request_id(query, params)
|
|
params["headers"]["Accept"] = "application/json"
|
|
params["url"] = f"{base_url}/results?id={request_id}"
|
|
|
|
return params
|
|
|
|
|
|
def _strip_leading_strings(text):
|
|
for x in ['wikipedia', 'google']:
|
|
if text.lower().endswith(x):
|
|
text = text[: -len(x)]
|
|
return text.strip()
|
|
|
|
|
|
def parse_search_query(json_results):
|
|
results = []
|
|
|
|
for item in json_results.get('specialSections', {}).get('topStoriesCompact', {}).get('data', []):
|
|
result = {
|
|
'url': item['link'],
|
|
'title': item['title'],
|
|
'img_src': item['image'],
|
|
'content': '',
|
|
'metadata': item.get('source'),
|
|
}
|
|
results.append(result)
|
|
|
|
for item in json_results.get('standardResults', []):
|
|
result = {
|
|
'url': item['link'],
|
|
'title': item['title'],
|
|
'content': html_to_text(item['description']),
|
|
}
|
|
results.append(result)
|
|
|
|
info = json_results.get('infoSection', {}).get('data')
|
|
if info:
|
|
attributes = []
|
|
for item in info.get('about', []):
|
|
|
|
text = html_to_text(item)
|
|
if ':' in text:
|
|
# split text into key / value
|
|
label, value = text.split(':', 1)
|
|
else:
|
|
# In other languages (tested with zh-TW) a colon is represented
|
|
# by a different symbol --> then we split at the first space.
|
|
label, value = text.split(' ', 1)
|
|
label = label[:-1]
|
|
|
|
value = _strip_leading_strings(value)
|
|
attributes.append({'label': label, 'value': value})
|
|
content = []
|
|
for item in [info.get('subtitle'), info.get('description')]:
|
|
if not item:
|
|
continue
|
|
item = _strip_leading_strings(html_to_text(item))
|
|
if item:
|
|
content.append(item)
|
|
|
|
results.append(
|
|
{
|
|
'infobox': info['title'],
|
|
'id': info['title'],
|
|
'img_src': info.get('image'),
|
|
'content': ' | '.join(content),
|
|
'attributes': attributes,
|
|
}
|
|
)
|
|
return results
|
|
|
|
|
|
def response(resp):
|
|
results = []
|
|
json_resp = resp.json()
|
|
|
|
if search_type == 'search':
|
|
results = parse_search_query(json_resp.get('results'))
|
|
|
|
elif search_type == 'images':
|
|
for item in json_resp.get('images', []):
|
|
results.append(
|
|
{
|
|
'template': 'images.html',
|
|
'title': item['title'],
|
|
'url': item.get('link'),
|
|
'img_src': item.get('image'),
|
|
'thumbnail_src': item.get('thumbnail'),
|
|
}
|
|
)
|
|
|
|
elif search_type == 'videos':
|
|
# The results in the video category are most often links to pages that contain
|
|
# a video and not to a video stream --> SearXNG can't use the video template.
|
|
|
|
for item in json_resp.get('videos', []):
|
|
metadata = [x for x in [item.get('description'), item.get('duration')] if x]
|
|
results.append(
|
|
{
|
|
'title': item['title'],
|
|
'url': item.get('link'),
|
|
'content': '',
|
|
'metadata': ' / '.join(metadata),
|
|
'img_src': item.get('image'),
|
|
}
|
|
)
|
|
|
|
elif search_type == 'news':
|
|
for item in json_resp.get('news', []):
|
|
metadata = [x for x in [item.get('source'), item.get('time')] if x]
|
|
results.append(
|
|
{
|
|
'title': item['title'],
|
|
'url': item.get('link'),
|
|
'content': item.get('description', ''),
|
|
'metadata': ' / '.join(metadata),
|
|
'img_src': item.get('image'),
|
|
}
|
|
)
|
|
|
|
return results
|