mirror of https://github.com/searxng/searxng.git
685 lines
22 KiB
Python
685 lines
22 KiB
Python
#!/usr/bin/env python
|
|
|
|
'''
|
|
searx is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
searx is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with searx. If not, see < http://www.gnu.org/licenses/ >.
|
|
|
|
(C) 2013- by Adam Tauber, <asciimoo@gmail.com>
|
|
'''
|
|
|
|
if __name__ == '__main__':
|
|
from sys import path
|
|
from os.path import realpath, dirname
|
|
path.append(realpath(dirname(realpath(__file__)) + '/../'))
|
|
|
|
import json
|
|
import cStringIO
|
|
import os
|
|
import hashlib
|
|
|
|
from datetime import datetime, timedelta
|
|
from urllib import urlencode
|
|
from werkzeug.contrib.fixers import ProxyFix
|
|
from flask import (
|
|
Flask, request, render_template, url_for, Response, make_response,
|
|
redirect, send_from_directory
|
|
)
|
|
from flask.ext.babel import Babel, gettext, format_date
|
|
from searx import settings, searx_dir
|
|
from searx.poolrequests import get as http_get
|
|
from searx.engines import (
|
|
categories, engines, get_engines_stats, engine_shortcuts
|
|
)
|
|
from searx.utils import (
|
|
UnicodeWriter, highlight_content, html_to_text, get_themes,
|
|
get_static_files, get_result_templates, gen_useragent, dict_subset,
|
|
prettify_url, get_blocked_engines
|
|
)
|
|
from searx.version import VERSION_STRING
|
|
from searx.languages import language_codes
|
|
from searx.https_rewrite import https_url_rewrite
|
|
from searx.search import Search
|
|
from searx.query import Query
|
|
from searx.autocomplete import searx_bang, backends as autocomplete_backends
|
|
from searx import logger
|
|
try:
|
|
from pygments import highlight
|
|
from pygments.lexers import get_lexer_by_name
|
|
from pygments.formatters import HtmlFormatter
|
|
except:
|
|
logger.critical("cannot import dependency: pygments")
|
|
from sys import exit
|
|
exit(1)
|
|
|
|
|
|
logger = logger.getChild('webapp')
|
|
|
|
static_path, templates_path, themes =\
|
|
get_themes(settings['themes_path']
|
|
if settings.get('themes_path')
|
|
else searx_dir)
|
|
|
|
default_theme = settings['server'].get('default_theme', 'default')
|
|
|
|
static_files = get_static_files(searx_dir)
|
|
|
|
result_templates = get_result_templates(searx_dir)
|
|
|
|
app = Flask(
|
|
__name__,
|
|
static_folder=static_path,
|
|
template_folder=templates_path
|
|
)
|
|
|
|
app.jinja_env.trim_blocks = True
|
|
app.jinja_env.lstrip_blocks = True
|
|
app.secret_key = settings['server']['secret_key']
|
|
|
|
babel = Babel(app)
|
|
|
|
rtl_locales = ['ar', 'arc', 'bcc', 'bqi', 'ckb', 'dv', 'fa', 'glk', 'he',
|
|
'ku', 'mzn', 'pnb'', ''ps', 'sd', 'ug', 'ur', 'yi']
|
|
|
|
global_favicons = []
|
|
for indice, theme in enumerate(themes):
|
|
global_favicons.append([])
|
|
theme_img_path = searx_dir + "/static/themes/" + theme + "/img/icons/"
|
|
for (dirpath, dirnames, filenames) in os.walk(theme_img_path):
|
|
global_favicons[indice].extend(filenames)
|
|
|
|
cookie_max_age = 60 * 60 * 24 * 365 * 5 # 5 years
|
|
|
|
_category_names = (gettext('files'),
|
|
gettext('general'),
|
|
gettext('music'),
|
|
gettext('social media'),
|
|
gettext('images'),
|
|
gettext('videos'),
|
|
gettext('it'),
|
|
gettext('news'),
|
|
gettext('map'))
|
|
|
|
|
|
@babel.localeselector
|
|
def get_locale():
|
|
locale = request.accept_languages.best_match(settings['locales'].keys())
|
|
|
|
if settings['server'].get('default_locale'):
|
|
locale = settings['server']['default_locale']
|
|
|
|
if request.cookies.get('locale', '') in settings['locales']:
|
|
locale = request.cookies.get('locale', '')
|
|
|
|
if 'locale' in request.args\
|
|
and request.args['locale'] in settings['locales']:
|
|
locale = request.args['locale']
|
|
|
|
if 'locale' in request.form\
|
|
and request.form['locale'] in settings['locales']:
|
|
locale = request.form['locale']
|
|
|
|
return locale
|
|
|
|
|
|
# code-highlighter
|
|
@app.template_filter('code_highlighter')
|
|
def code_highlighter(codelines, language=None):
|
|
if not language:
|
|
language = 'text'
|
|
|
|
try:
|
|
# find lexer by programing language
|
|
lexer = get_lexer_by_name(language, stripall=True)
|
|
except:
|
|
# if lexer is not found, using default one
|
|
logger.debug('highlighter cannot find lexer for {0}'.format(language))
|
|
lexer = get_lexer_by_name('text', stripall=True)
|
|
|
|
html_code = ''
|
|
tmp_code = ''
|
|
last_line = None
|
|
|
|
# parse lines
|
|
for line, code in codelines:
|
|
if not last_line:
|
|
line_code_start = line
|
|
|
|
# new codeblock is detected
|
|
if last_line is not None and\
|
|
last_line + 1 != line:
|
|
|
|
# highlight last codepart
|
|
formatter = HtmlFormatter(linenos='inline',
|
|
linenostart=line_code_start)
|
|
html_code = html_code + highlight(tmp_code, lexer, formatter)
|
|
|
|
# reset conditions for next codepart
|
|
tmp_code = ''
|
|
line_code_start = line
|
|
|
|
# add codepart
|
|
tmp_code += code + '\n'
|
|
|
|
# update line
|
|
last_line = line
|
|
|
|
# highlight last codepart
|
|
formatter = HtmlFormatter(linenos='inline', linenostart=line_code_start)
|
|
html_code = html_code + highlight(tmp_code, lexer, formatter)
|
|
|
|
return html_code
|
|
|
|
|
|
def get_base_url():
|
|
if settings['server']['base_url']:
|
|
hostname = settings['server']['base_url']
|
|
else:
|
|
scheme = 'http'
|
|
if request.is_secure:
|
|
scheme = 'https'
|
|
hostname = url_for('index', _external=True, _scheme=scheme)
|
|
return hostname
|
|
|
|
|
|
def get_current_theme_name(override=None):
|
|
"""Returns theme name.
|
|
|
|
Checks in this order:
|
|
1. override
|
|
2. cookies
|
|
3. settings"""
|
|
|
|
if override and override in themes:
|
|
return override
|
|
theme_name = request.args.get('theme',
|
|
request.cookies.get('theme',
|
|
default_theme))
|
|
if theme_name not in themes:
|
|
theme_name = default_theme
|
|
return theme_name
|
|
|
|
|
|
def get_result_template(theme, template_name):
|
|
themed_path = theme + '/result_templates/' + template_name
|
|
if themed_path in result_templates:
|
|
return themed_path
|
|
return 'result_templates/' + template_name
|
|
|
|
|
|
def url_for_theme(endpoint, override_theme=None, **values):
|
|
if endpoint == 'static' and values.get('filename'):
|
|
theme_name = get_current_theme_name(override=override_theme)
|
|
filename_with_theme = "themes/{}/{}".format(theme_name, values['filename'])
|
|
if filename_with_theme in static_files:
|
|
values['filename'] = filename_with_theme
|
|
return url_for(endpoint, **values)
|
|
|
|
|
|
def image_proxify(url):
|
|
|
|
if url.startswith('//'):
|
|
url = 'https:' + url
|
|
|
|
if not settings['server'].get('image_proxy') and not request.cookies.get('image_proxy'):
|
|
return url
|
|
|
|
hash_string = url + settings['server']['secret_key']
|
|
h = hashlib.sha256(hash_string.encode('utf-8')).hexdigest()
|
|
|
|
return '{0}?{1}'.format(url_for('image_proxy'),
|
|
urlencode(dict(url=url.encode('utf-8'), h=h)))
|
|
|
|
|
|
def render(template_name, override_theme=None, **kwargs):
|
|
blocked_engines = get_blocked_engines(engines, request.cookies)
|
|
|
|
autocomplete = request.cookies.get('autocomplete')
|
|
|
|
if autocomplete not in autocomplete_backends:
|
|
autocomplete = None
|
|
|
|
nonblocked_categories = set(category for engine_name in engines
|
|
for category in engines[engine_name].categories
|
|
if (engine_name, category) not in blocked_engines)
|
|
|
|
if 'categories' not in kwargs:
|
|
kwargs['categories'] = ['general']
|
|
kwargs['categories'].extend(x for x in
|
|
sorted(categories.keys())
|
|
if x != 'general'
|
|
and x in nonblocked_categories)
|
|
|
|
if 'selected_categories' not in kwargs:
|
|
kwargs['selected_categories'] = []
|
|
for arg in request.args:
|
|
if arg.startswith('category_'):
|
|
c = arg.split('_', 1)[1]
|
|
if c in categories:
|
|
kwargs['selected_categories'].append(c)
|
|
if not kwargs['selected_categories']:
|
|
cookie_categories = request.cookies.get('categories', '').split(',')
|
|
for ccateg in cookie_categories:
|
|
if ccateg in categories:
|
|
kwargs['selected_categories'].append(ccateg)
|
|
if not kwargs['selected_categories']:
|
|
kwargs['selected_categories'] = ['general']
|
|
|
|
if 'autocomplete' not in kwargs:
|
|
kwargs['autocomplete'] = autocomplete
|
|
|
|
if get_locale() in rtl_locales and 'rtl' not in kwargs:
|
|
kwargs['rtl'] = True
|
|
|
|
kwargs['searx_version'] = VERSION_STRING
|
|
|
|
kwargs['method'] = request.cookies.get('method', 'POST')
|
|
|
|
kwargs['safesearch'] = request.cookies.get('safesearch', '1')
|
|
|
|
# override url_for function in templates
|
|
kwargs['url_for'] = url_for_theme
|
|
|
|
kwargs['image_proxify'] = image_proxify
|
|
|
|
kwargs['get_result_template'] = get_result_template
|
|
|
|
kwargs['theme'] = get_current_theme_name(override=override_theme)
|
|
|
|
kwargs['template_name'] = template_name
|
|
|
|
kwargs['cookies'] = request.cookies
|
|
|
|
return render_template(
|
|
'{}/{}'.format(kwargs['theme'], template_name), **kwargs)
|
|
|
|
|
|
@app.route('/search', methods=['GET', 'POST'])
|
|
@app.route('/', methods=['GET', 'POST'])
|
|
def index():
|
|
"""Render index page.
|
|
|
|
Supported outputs: html, json, csv, rss.
|
|
"""
|
|
|
|
if not request.args and not request.form:
|
|
return render(
|
|
'index.html',
|
|
)
|
|
|
|
try:
|
|
search = Search(request)
|
|
except:
|
|
return render(
|
|
'index.html',
|
|
)
|
|
|
|
search.search(request)
|
|
|
|
for result in search.results:
|
|
|
|
if not search.paging and engines[result['engine']].paging:
|
|
search.paging = True
|
|
|
|
# check if HTTPS rewrite is required
|
|
if settings['server']['https_rewrite']\
|
|
and result['parsed_url'].scheme == 'http':
|
|
|
|
result = https_url_rewrite(result)
|
|
|
|
if search.request_data.get('format', 'html') == 'html':
|
|
if 'content' in result:
|
|
result['content'] = highlight_content(result['content'],
|
|
search.query.encode('utf-8')) # noqa
|
|
result['title'] = highlight_content(result['title'],
|
|
search.query.encode('utf-8'))
|
|
else:
|
|
if 'content' in result:
|
|
result['content'] = html_to_text(result['content']).strip()
|
|
# removing html content and whitespace duplications
|
|
result['title'] = ' '.join(html_to_text(result['title'])
|
|
.strip().split())
|
|
|
|
result['pretty_url'] = prettify_url(result['url'])
|
|
|
|
# TODO, check if timezone is calculated right
|
|
if 'publishedDate' in result:
|
|
result['pubdate'] = result['publishedDate'].strftime('%Y-%m-%d %H:%M:%S%z')
|
|
if result['publishedDate'].replace(tzinfo=None) >= datetime.now() - timedelta(days=1):
|
|
timedifference = datetime.now() - result['publishedDate'].replace(tzinfo=None)
|
|
minutes = int((timedifference.seconds / 60) % 60)
|
|
hours = int(timedifference.seconds / 60 / 60)
|
|
if hours == 0:
|
|
result['publishedDate'] = gettext(u'{minutes} minute(s) ago').format(minutes=minutes) # noqa
|
|
else:
|
|
result['publishedDate'] = gettext(u'{hours} hour(s), {minutes} minute(s) ago').format(hours=hours, minutes=minutes) # noqa
|
|
else:
|
|
result['publishedDate'] = format_date(result['publishedDate'])
|
|
|
|
if search.request_data.get('format') == 'json':
|
|
return Response(json.dumps({'query': search.query,
|
|
'results': search.results}),
|
|
mimetype='application/json')
|
|
elif search.request_data.get('format') == 'csv':
|
|
csv = UnicodeWriter(cStringIO.StringIO())
|
|
keys = ('title', 'url', 'content', 'host', 'engine', 'score')
|
|
if search.results:
|
|
csv.writerow(keys)
|
|
for row in search.results:
|
|
row['host'] = row['parsed_url'].netloc
|
|
csv.writerow([row.get(key, '') for key in keys])
|
|
csv.stream.seek(0)
|
|
response = Response(csv.stream.read(), mimetype='application/csv')
|
|
cont_disp = 'attachment;Filename=searx_-_{0}.csv'.format(search.query)
|
|
response.headers.add('Content-Disposition', cont_disp)
|
|
return response
|
|
elif search.request_data.get('format') == 'rss':
|
|
response_rss = render(
|
|
'opensearch_response_rss.xml',
|
|
results=search.results,
|
|
q=search.request_data['q'],
|
|
number_of_results=len(search.results),
|
|
base_url=get_base_url()
|
|
)
|
|
return Response(response_rss, mimetype='text/xml')
|
|
|
|
return render(
|
|
'results.html',
|
|
results=search.results,
|
|
q=search.request_data['q'],
|
|
selected_categories=search.categories,
|
|
paging=search.paging,
|
|
pageno=search.pageno,
|
|
base_url=get_base_url(),
|
|
suggestions=search.suggestions,
|
|
answers=search.answers,
|
|
infoboxes=search.infoboxes,
|
|
theme=get_current_theme_name(),
|
|
favicons=global_favicons[themes.index(get_current_theme_name())]
|
|
)
|
|
|
|
|
|
@app.route('/about', methods=['GET'])
|
|
def about():
|
|
"""Render about page"""
|
|
return render(
|
|
'about.html',
|
|
)
|
|
|
|
|
|
@app.route('/autocompleter', methods=['GET', 'POST'])
|
|
def autocompleter():
|
|
"""Return autocompleter results"""
|
|
request_data = {}
|
|
|
|
# select request method
|
|
if request.method == 'POST':
|
|
request_data = request.form
|
|
else:
|
|
request_data = request.args
|
|
|
|
# set blocked engines
|
|
blocked_engines = get_blocked_engines(engines, request.cookies)
|
|
|
|
# parse query
|
|
query = Query(request_data.get('q', '').encode('utf-8'), blocked_engines)
|
|
query.parse_query()
|
|
|
|
# check if search query is set
|
|
if not query.getSearchQuery():
|
|
return '', 400
|
|
|
|
# run autocompleter
|
|
completer = autocomplete_backends.get(request.cookies.get('autocomplete'))
|
|
|
|
# parse searx specific autocompleter results like !bang
|
|
raw_results = searx_bang(query)
|
|
|
|
# normal autocompletion results only appear if max 3 inner results returned
|
|
if len(raw_results) <= 3 and completer:
|
|
# run autocompletion
|
|
raw_results.extend(completer(query.getSearchQuery()))
|
|
|
|
# parse results (write :language and !engine back to result string)
|
|
results = []
|
|
for result in raw_results:
|
|
query.changeSearchQuery(result)
|
|
|
|
# add parsed result
|
|
results.append(query.getFullQuery())
|
|
|
|
# return autocompleter results
|
|
if request_data.get('format') == 'x-suggestions':
|
|
return Response(json.dumps([query.query, results]),
|
|
mimetype='application/json')
|
|
|
|
return Response(json.dumps(results),
|
|
mimetype='application/json')
|
|
|
|
|
|
@app.route('/preferences', methods=['GET', 'POST'])
|
|
def preferences():
|
|
"""Render preferences page.
|
|
|
|
Settings that are going to be saved as cookies."""
|
|
lang = None
|
|
image_proxy = request.cookies.get('image_proxy', settings['server'].get('image_proxy'))
|
|
|
|
if request.cookies.get('language')\
|
|
and request.cookies['language'] in (x[0] for x in language_codes):
|
|
lang = request.cookies['language']
|
|
|
|
blocked_engines = []
|
|
|
|
resp = make_response(redirect(url_for('index')))
|
|
|
|
if request.method == 'GET':
|
|
blocked_engines = get_blocked_engines(engines, request.cookies)
|
|
else: # on save
|
|
selected_categories = []
|
|
locale = None
|
|
autocomplete = ''
|
|
method = 'POST'
|
|
safesearch = '1'
|
|
|
|
for pd_name, pd in request.form.items():
|
|
if pd_name.startswith('category_'):
|
|
category = pd_name[9:]
|
|
if category not in categories:
|
|
continue
|
|
selected_categories.append(category)
|
|
elif pd_name == 'locale' and pd in settings['locales']:
|
|
locale = pd
|
|
elif pd_name == 'image_proxy':
|
|
image_proxy = pd
|
|
elif pd_name == 'autocomplete':
|
|
autocomplete = pd
|
|
elif pd_name == 'language' and (pd == 'all' or
|
|
pd in (x[0] for
|
|
x in language_codes)):
|
|
lang = pd
|
|
elif pd_name == 'method':
|
|
method = pd
|
|
elif pd_name == 'safesearch':
|
|
safesearch = pd
|
|
elif pd_name.startswith('engine_'):
|
|
if pd_name.find('__') > -1:
|
|
engine_name, category = pd_name.replace('engine_', '', 1).split('__', 1)
|
|
if engine_name in engines and category in engines[engine_name].categories:
|
|
blocked_engines.append((engine_name, category))
|
|
elif pd_name == 'theme':
|
|
theme = pd if pd in themes else default_theme
|
|
else:
|
|
resp.set_cookie(pd_name, pd, max_age=cookie_max_age)
|
|
|
|
resp.set_cookie(
|
|
'blocked_engines', ','.join('__'.join(e) for e in blocked_engines),
|
|
max_age=cookie_max_age
|
|
)
|
|
|
|
if locale:
|
|
resp.set_cookie(
|
|
'locale', locale,
|
|
max_age=cookie_max_age
|
|
)
|
|
|
|
if lang:
|
|
resp.set_cookie(
|
|
'language', lang,
|
|
max_age=cookie_max_age
|
|
)
|
|
|
|
if selected_categories:
|
|
# cookie max age: 4 weeks
|
|
resp.set_cookie(
|
|
'categories', ','.join(selected_categories),
|
|
max_age=cookie_max_age
|
|
)
|
|
|
|
resp.set_cookie(
|
|
'autocomplete', autocomplete,
|
|
max_age=cookie_max_age
|
|
)
|
|
|
|
resp.set_cookie('method', method, max_age=cookie_max_age)
|
|
|
|
resp.set_cookie('safesearch', safesearch, max_age=cookie_max_age)
|
|
|
|
resp.set_cookie('image_proxy', image_proxy, max_age=cookie_max_age)
|
|
|
|
resp.set_cookie('theme', theme, max_age=cookie_max_age)
|
|
|
|
return resp
|
|
return render('preferences.html',
|
|
locales=settings['locales'],
|
|
current_locale=get_locale(),
|
|
current_language=lang or 'all',
|
|
image_proxy=image_proxy,
|
|
language_codes=language_codes,
|
|
categs=categories.items(),
|
|
blocked_engines=blocked_engines,
|
|
autocomplete_backends=autocomplete_backends,
|
|
shortcuts={y: x for x, y in engine_shortcuts.items()},
|
|
themes=themes,
|
|
theme=get_current_theme_name())
|
|
|
|
|
|
@app.route('/image_proxy', methods=['GET'])
|
|
def image_proxy():
|
|
url = request.args.get('url').encode('utf-8')
|
|
|
|
if not url:
|
|
return '', 400
|
|
|
|
h = hashlib.sha256(url + settings['server']['secret_key'].encode('utf-8')).hexdigest()
|
|
|
|
if h != request.args.get('h'):
|
|
return '', 400
|
|
|
|
headers = dict_subset(request.headers, {'If-Modified-Since', 'If-None-Match'})
|
|
headers['User-Agent'] = gen_useragent()
|
|
|
|
resp = http_get(url,
|
|
stream=True,
|
|
timeout=settings['server'].get('request_timeout', 2),
|
|
headers=headers)
|
|
|
|
if resp.status_code == 304:
|
|
return '', resp.status_code
|
|
|
|
if resp.status_code != 200:
|
|
logger.debug('image-proxy: wrong response code: {0}'.format(resp.status_code))
|
|
if resp.status_code >= 400:
|
|
return '', resp.status_code
|
|
return '', 400
|
|
|
|
if not resp.headers.get('content-type', '').startswith('image/'):
|
|
logger.debug('image-proxy: wrong content-type: {0}'.format(resp.get('content-type')))
|
|
return '', 400
|
|
|
|
img = ''
|
|
chunk_counter = 0
|
|
|
|
for chunk in resp.iter_content(1024 * 1024):
|
|
chunk_counter += 1
|
|
if chunk_counter > 5:
|
|
return '', 502 # Bad gateway - file is too big (>5M)
|
|
img += chunk
|
|
|
|
headers = dict_subset(resp.headers, {'Content-Length', 'Length', 'Date', 'Last-Modified', 'Expires', 'Etag'})
|
|
|
|
return Response(img, mimetype=resp.headers['content-type'], headers=headers)
|
|
|
|
|
|
@app.route('/stats', methods=['GET'])
|
|
def stats():
|
|
"""Render engine statistics page."""
|
|
stats = get_engines_stats()
|
|
return render(
|
|
'stats.html',
|
|
stats=stats,
|
|
)
|
|
|
|
|
|
@app.route('/robots.txt', methods=['GET'])
|
|
def robots():
|
|
return Response("""User-agent: *
|
|
Allow: /
|
|
Allow: /about
|
|
Disallow: /stats
|
|
Disallow: /preferences
|
|
""", mimetype='text/plain')
|
|
|
|
|
|
@app.route('/opensearch.xml', methods=['GET'])
|
|
def opensearch():
|
|
method = 'post'
|
|
# chrome/chromium only supports HTTP GET....
|
|
if request.headers.get('User-Agent', '').lower().find('webkit') >= 0:
|
|
method = 'get'
|
|
|
|
ret = render('opensearch.xml',
|
|
opensearch_method=method,
|
|
host=get_base_url())
|
|
|
|
resp = Response(response=ret,
|
|
status=200,
|
|
mimetype="text/xml")
|
|
return resp
|
|
|
|
|
|
@app.route('/favicon.ico')
|
|
def favicon():
|
|
return send_from_directory(os.path.join(app.root_path,
|
|
'static/themes',
|
|
get_current_theme_name(),
|
|
'img'),
|
|
'favicon.png',
|
|
mimetype='image/vnd.microsoft.icon')
|
|
|
|
|
|
def run():
|
|
app.run(
|
|
debug=settings['server']['debug'],
|
|
use_debugger=settings['server']['debug'],
|
|
port=settings['server']['port']
|
|
)
|
|
|
|
|
|
application = app
|
|
|
|
app.wsgi_app = ProxyFix(application.wsgi_app)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
run()
|