forked from Ponysearch/Ponysearch
fe691a0988
Preferences class was introduced in order to handle user preferences. Right now it parses cookies and the form in preferences. Also it can retrieve settings based on the name of the setting. ATTENTION Please note that engine preferences are handled differently from now on. So it introduces incompatible changes. Every user who has saved preferences should reset and save his/her settings again. This change was needed, because everytime a default disabled engine was added saved user preferences would broke. Now engine setting tracking is fixed.
742 lines
24 KiB
Python
742 lines
24 KiB
Python
#!/usr/bin/env python
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'''
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searx is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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searx is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with searx. If not, see < http://www.gnu.org/licenses/ >.
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(C) 2013- by Adam Tauber, <asciimoo@gmail.com>
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'''
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if __name__ == '__main__':
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from sys import path
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from os.path import realpath, dirname
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path.append(realpath(dirname(realpath(__file__)) + '/../'))
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import json
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import cStringIO
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import os
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import hashlib
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import requests
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from searx import logger
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logger = logger.getChild('webapp')
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try:
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from pygments import highlight
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from pygments.lexers import get_lexer_by_name
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from pygments.formatters import HtmlFormatter
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except:
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logger.critical("cannot import dependency: pygments")
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from sys import exit
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exit(1)
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from datetime import datetime, timedelta
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from urllib import urlencode
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from urlparse import urlparse, urljoin
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from werkzeug.contrib.fixers import ProxyFix
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from flask import (
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Flask, request, render_template, url_for, Response, make_response,
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redirect, send_from_directory
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)
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from flask.ext.babel import Babel, gettext, format_date
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from searx import settings, searx_dir
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from searx.engines import (
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categories, engines, get_engines_stats, engine_shortcuts
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)
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from searx.utils import (
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UnicodeWriter, highlight_content, html_to_text, get_themes,
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get_static_files, get_result_templates, gen_useragent, dict_subset,
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prettify_url
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)
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from searx.version import VERSION_STRING
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from searx.languages import language_codes
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from searx.search import Search
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from searx.query import Query
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from searx.autocomplete import searx_bang, backends as autocomplete_backends
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from searx.plugins import plugins
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from searx.preferences import Preferences
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# check if the pyopenssl, ndg-httpsclient, pyasn1 packages are installed.
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# They are needed for SSL connection without trouble, see #298
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try:
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import OpenSSL.SSL # NOQA
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import ndg.httpsclient # NOQA
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import pyasn1 # NOQA
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except ImportError:
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logger.critical("The pyopenssl, ndg-httpsclient, pyasn1 packages have to be installed.\n"
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"Some HTTPS connections will failed")
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static_path, templates_path, themes =\
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get_themes(settings['ui']['themes_path']
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if settings['ui']['themes_path']
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else searx_dir)
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default_theme = settings['ui']['default_theme']
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static_files = get_static_files(searx_dir)
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result_templates = get_result_templates(searx_dir)
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app = Flask(
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__name__,
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static_folder=static_path,
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template_folder=templates_path
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)
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app.jinja_env.trim_blocks = True
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app.jinja_env.lstrip_blocks = True
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app.secret_key = settings['server']['secret_key']
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babel = Babel(app)
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rtl_locales = ['ar', 'arc', 'bcc', 'bqi', 'ckb', 'dv', 'fa', 'glk', 'he',
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'ku', 'mzn', 'pnb'', ''ps', 'sd', 'ug', 'ur', 'yi']
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global_favicons = []
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for indice, theme in enumerate(themes):
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global_favicons.append([])
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theme_img_path = searx_dir + "/static/themes/" + theme + "/img/icons/"
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for (dirpath, dirnames, filenames) in os.walk(theme_img_path):
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global_favicons[indice].extend(filenames)
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_category_names = (gettext('files'),
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gettext('general'),
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gettext('music'),
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gettext('social media'),
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gettext('images'),
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gettext('videos'),
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gettext('it'),
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gettext('news'),
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gettext('map'),
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gettext('science'))
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outgoing_proxies = settings['outgoing'].get('proxies', None)
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@babel.localeselector
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def get_locale():
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locale = request.accept_languages.best_match(settings['locales'].keys())
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if settings['ui'].get('default_locale'):
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locale = settings['ui']['default_locale']
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if request.cookies.get('locale', '') in settings['locales']:
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locale = request.cookies.get('locale', '')
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if 'locale' in request.args\
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and request.args['locale'] in settings['locales']:
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locale = request.args['locale']
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if 'locale' in request.form\
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and request.form['locale'] in settings['locales']:
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locale = request.form['locale']
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return locale
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# code-highlighter
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@app.template_filter('code_highlighter')
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def code_highlighter(codelines, language=None):
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if not language:
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language = 'text'
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try:
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# find lexer by programing language
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lexer = get_lexer_by_name(language, stripall=True)
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except:
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# if lexer is not found, using default one
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logger.debug('highlighter cannot find lexer for {0}'.format(language))
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lexer = get_lexer_by_name('text', stripall=True)
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html_code = ''
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tmp_code = ''
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last_line = None
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# parse lines
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for line, code in codelines:
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if not last_line:
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line_code_start = line
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# new codeblock is detected
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if last_line is not None and\
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last_line + 1 != line:
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# highlight last codepart
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formatter = HtmlFormatter(linenos='inline',
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linenostart=line_code_start)
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html_code = html_code + highlight(tmp_code, lexer, formatter)
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# reset conditions for next codepart
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tmp_code = ''
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line_code_start = line
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# add codepart
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tmp_code += code + '\n'
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# update line
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last_line = line
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# highlight last codepart
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formatter = HtmlFormatter(linenos='inline', linenostart=line_code_start)
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html_code = html_code + highlight(tmp_code, lexer, formatter)
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return html_code
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# Extract domain from url
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@app.template_filter('extract_domain')
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def extract_domain(url):
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return urlparse(url)[1]
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def get_base_url():
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if settings['server']['base_url']:
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hostname = settings['server']['base_url']
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else:
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scheme = 'http'
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if request.is_secure:
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scheme = 'https'
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hostname = url_for('index', _external=True, _scheme=scheme)
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return hostname
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def get_current_theme_name(override=None):
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"""Returns theme name.
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Checks in this order:
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1. override
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2. cookies
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3. settings"""
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if override and override in themes:
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return override
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theme_name = request.args.get('theme', request.preferences.get_value('theme'))
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if theme_name not in themes:
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theme_name = default_theme
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return theme_name
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def get_result_template(theme, template_name):
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themed_path = theme + '/result_templates/' + template_name
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if themed_path in result_templates:
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return themed_path
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return 'result_templates/' + template_name
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def url_for_theme(endpoint, override_theme=None, **values):
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if endpoint == 'static' and values.get('filename'):
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theme_name = get_current_theme_name(override=override_theme)
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filename_with_theme = "themes/{}/{}".format(theme_name, values['filename'])
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if filename_with_theme in static_files:
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values['filename'] = filename_with_theme
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return url_for(endpoint, **values)
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def image_proxify(url):
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if url.startswith('//'):
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url = 'https:' + url
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if not settings['server'].get('image_proxy') and not request.cookies.get('image_proxy'):
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return url
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hash_string = url + settings['server']['secret_key']
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h = hashlib.sha256(hash_string.encode('utf-8')).hexdigest()
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return '{0}?{1}'.format(url_for('image_proxy'),
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urlencode(dict(url=url.encode('utf-8'), h=h)))
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def render(template_name, override_theme=None, **kwargs):
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blocked_engines = request.preferences.engines.get_disabled()
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autocomplete = request.preferences.get_value('autocomplete')
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nonblocked_categories = set(category for engine_name in engines
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for category in engines[engine_name].categories
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if (engine_name, category) not in blocked_engines)
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if 'categories' not in kwargs:
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kwargs['categories'] = ['general']
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kwargs['categories'].extend(x for x in
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sorted(categories.keys())
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if x != 'general'
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and x in nonblocked_categories)
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if 'all_categories' not in kwargs:
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kwargs['all_categories'] = ['general']
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kwargs['all_categories'].extend(x for x in
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sorted(categories.keys())
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if x != 'general')
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if 'selected_categories' not in kwargs:
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kwargs['selected_categories'] = []
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for arg in request.args:
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if arg.startswith('category_'):
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c = arg.split('_', 1)[1]
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if c in categories:
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kwargs['selected_categories'].append(c)
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if not kwargs['selected_categories']:
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cookie_categories = request.preferences.get_value('categories')
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for ccateg in cookie_categories:
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if ccateg in categories:
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kwargs['selected_categories'].append(ccateg)
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if not kwargs['selected_categories']:
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kwargs['selected_categories'] = ['general']
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if 'autocomplete' not in kwargs:
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kwargs['autocomplete'] = autocomplete
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if get_locale() in rtl_locales and 'rtl' not in kwargs:
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kwargs['rtl'] = True
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kwargs['searx_version'] = VERSION_STRING
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kwargs['method'] = request.preferences.get_value('method')
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kwargs['safesearch'] = str(request.preferences.get_value('safesearch'))
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# override url_for function in templates
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kwargs['url_for'] = url_for_theme
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kwargs['image_proxify'] = image_proxify
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kwargs['get_result_template'] = get_result_template
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kwargs['theme'] = get_current_theme_name(override=override_theme)
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kwargs['template_name'] = template_name
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kwargs['cookies'] = request.cookies
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kwargs['instance_name'] = settings['general']['instance_name']
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kwargs['scripts'] = set()
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for plugin in request.user_plugins:
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for script in plugin.js_dependencies:
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kwargs['scripts'].add(script)
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kwargs['styles'] = set()
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for plugin in request.user_plugins:
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for css in plugin.css_dependencies:
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kwargs['styles'].add(css)
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return render_template(
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'{}/{}'.format(kwargs['theme'], template_name), **kwargs)
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@app.before_request
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def pre_request():
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# merge GET, POST vars
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preferences = Preferences(themes, categories.keys(), engines, plugins)
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preferences.parse_cookies(request.cookies)
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request.preferences = preferences
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request.form = dict(request.form.items())
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for k, v in request.args.items():
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if k not in request.form:
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request.form[k] = v
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request.user_plugins = []
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allowed_plugins = preferences.plugins.get_enabled()
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disabled_plugins = preferences.plugins.get_disabled()
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for plugin in plugins:
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if ((plugin.default_on and plugin.id not in disabled_plugins)
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or plugin.id in allowed_plugins):
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request.user_plugins.append(plugin)
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@app.route('/search', methods=['GET', 'POST'])
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@app.route('/', methods=['GET', 'POST'])
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def index():
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"""Render index page.
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Supported outputs: html, json, csv, rss.
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"""
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if not request.args and not request.form:
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return render(
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'index.html',
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)
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try:
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search = Search(request)
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except:
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return render(
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'index.html',
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)
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if plugins.call('pre_search', request, locals()):
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search.search(request)
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plugins.call('post_search', request, locals())
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for result in search.result_container.get_ordered_results():
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plugins.call('on_result', request, locals())
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if not search.paging and engines[result['engine']].paging:
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search.paging = True
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if search.request_data.get('format', 'html') == 'html':
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if 'content' in result:
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result['content'] = highlight_content(result['content'],
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search.query.encode('utf-8')) # noqa
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result['title'] = highlight_content(result['title'],
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search.query.encode('utf-8'))
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else:
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if result.get('content'):
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result['content'] = html_to_text(result['content']).strip()
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# removing html content and whitespace duplications
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result['title'] = ' '.join(html_to_text(result['title']).strip().split())
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result['pretty_url'] = prettify_url(result['url'])
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# TODO, check if timezone is calculated right
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if 'publishedDate' in result:
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try: # test if publishedDate >= 1900 (datetime module bug)
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result['pubdate'] = result['publishedDate'].strftime('%Y-%m-%d %H:%M:%S%z')
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except ValueError:
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result['publishedDate'] = None
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else:
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if result['publishedDate'].replace(tzinfo=None) >= datetime.now() - timedelta(days=1):
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timedifference = datetime.now() - result['publishedDate'].replace(tzinfo=None)
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minutes = int((timedifference.seconds / 60) % 60)
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hours = int(timedifference.seconds / 60 / 60)
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if hours == 0:
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result['publishedDate'] = gettext(u'{minutes} minute(s) ago').format(minutes=minutes)
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else:
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result['publishedDate'] = gettext(u'{hours} hour(s), {minutes} minute(s) ago').format(hours=hours, minutes=minutes) # noqa
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else:
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result['publishedDate'] = format_date(result['publishedDate'])
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if search.request_data.get('format') == 'json':
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return Response(json.dumps({'query': search.query,
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'results': search.result_container.get_ordered_results()}),
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mimetype='application/json')
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elif search.request_data.get('format') == 'csv':
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csv = UnicodeWriter(cStringIO.StringIO())
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keys = ('title', 'url', 'content', 'host', 'engine', 'score')
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csv.writerow(keys)
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for row in search.result_container.get_ordered_results():
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row['host'] = row['parsed_url'].netloc
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csv.writerow([row.get(key, '') for key in keys])
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csv.stream.seek(0)
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response = Response(csv.stream.read(), mimetype='application/csv')
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cont_disp = 'attachment;Filename=searx_-_{0}.csv'.format(search.query.encode('utf-8'))
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response.headers.add('Content-Disposition', cont_disp)
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return response
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elif search.request_data.get('format') == 'rss':
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response_rss = render(
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'opensearch_response_rss.xml',
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results=search.result_container.get_ordered_results(),
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q=search.request_data['q'],
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number_of_results=search.result_container.results_length(),
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base_url=get_base_url()
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)
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return Response(response_rss, mimetype='text/xml')
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return render(
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'results.html',
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results=search.result_container.get_ordered_results(),
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q=search.request_data['q'],
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selected_categories=search.categories,
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paging=search.paging,
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pageno=search.pageno,
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base_url=get_base_url(),
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suggestions=search.result_container.suggestions,
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answers=search.result_container.answers,
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infoboxes=search.result_container.infoboxes,
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theme=get_current_theme_name(),
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favicons=global_favicons[themes.index(get_current_theme_name())]
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)
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@app.route('/about', methods=['GET'])
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def about():
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"""Render about page"""
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return render(
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'about.html',
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)
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@app.route('/autocompleter', methods=['GET', 'POST'])
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def autocompleter():
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"""Return autocompleter results"""
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request_data = {}
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# select request method
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if request.method == 'POST':
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request_data = request.form
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else:
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request_data = request.args
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# set blocked engines
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blocked_engines = request.preferences.engines.get_disabled()
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# parse query
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query = Query(request_data.get('q', '').encode('utf-8'), blocked_engines)
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query.parse_query()
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# check if search query is set
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if not query.getSearchQuery():
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return '', 400
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# run autocompleter
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completer = autocomplete_backends.get(request.preferences.get_value('autocomplete'))
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# parse searx specific autocompleter results like !bang
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raw_results = searx_bang(query)
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# normal autocompletion results only appear if max 3 inner results returned
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if len(raw_results) <= 3 and completer:
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# get language from cookie
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language = request.cookies.get('language')
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if not language or language == 'all':
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language = 'en'
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else:
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language = language.split('_')[0]
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# run autocompletion
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raw_results.extend(completer(query.getSearchQuery(), language))
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# parse results (write :language and !engine back to result string)
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results = []
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for result in raw_results:
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query.changeSearchQuery(result)
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# add parsed result
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results.append(query.getFullQuery())
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|
# 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 && save user preferences"""
|
|
|
|
# save preferences
|
|
if request.method == 'POST':
|
|
resp = make_response(redirect(urljoin(settings['server']['base_url'], url_for('index'))))
|
|
try:
|
|
request.preferences.parse_form(request.form)
|
|
except ValidationException:
|
|
# TODO use flash feature of flask
|
|
return resp
|
|
return request.preferences.save(resp)
|
|
|
|
# render preferences
|
|
image_proxy = request.preferences.get_value('image_proxy')
|
|
lang = request.preferences.get_value('language')
|
|
blocked_engines = request.preferences.engines.get_disabled()
|
|
allowed_plugins = request.preferences.plugins.get_enabled()
|
|
|
|
# stats for preferences page
|
|
stats = {}
|
|
|
|
for c in categories:
|
|
for e in categories[c]:
|
|
stats[e.name] = {'time': None,
|
|
'warn_timeout': False,
|
|
'warn_time': False}
|
|
if e.timeout > settings['outgoing']['request_timeout']:
|
|
stats[e.name]['warn_timeout'] = True
|
|
|
|
for engine_stat in get_engines_stats()[0][1]:
|
|
stats[engine_stat.get('name')]['time'] = round(engine_stat.get('avg'), 3)
|
|
if engine_stat.get('avg') > settings['outgoing']['request_timeout']:
|
|
stats[engine_stat.get('name')]['warn_time'] = True
|
|
# end of stats
|
|
|
|
return render('preferences.html',
|
|
locales=settings['locales'],
|
|
current_locale=get_locale(),
|
|
current_language=lang,
|
|
image_proxy=image_proxy,
|
|
language_codes=language_codes,
|
|
engines_by_category=categories,
|
|
stats=stats,
|
|
blocked_engines=blocked_engines,
|
|
autocomplete_backends=autocomplete_backends,
|
|
shortcuts={y: x for x, y in engine_shortcuts.items()},
|
|
themes=themes,
|
|
plugins=plugins,
|
|
allowed_plugins=allowed_plugins,
|
|
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 = requests.get(url,
|
|
stream=True,
|
|
timeout=settings['outgoing']['request_timeout'],
|
|
headers=headers,
|
|
proxies=outgoing_proxies)
|
|
|
|
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.headers.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'
|
|
|
|
if request.preferences.get_value('method') == 'GET':
|
|
method = 'get'
|
|
|
|
# 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(),
|
|
urljoin=urljoin)
|
|
|
|
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')
|
|
|
|
|
|
@app.route('/clear_cookies')
|
|
def clear_cookies():
|
|
resp = make_response(redirect(urljoin(settings['server']['base_url'], url_for('index'))))
|
|
for cookie_name in request.cookies:
|
|
resp.delete_cookie(cookie_name)
|
|
return resp
|
|
|
|
|
|
def run():
|
|
app.run(
|
|
debug=settings['general']['debug'],
|
|
use_debugger=settings['general']['debug'],
|
|
port=settings['server']['port'],
|
|
host=settings['server']['bind_address']
|
|
)
|
|
|
|
|
|
class ReverseProxyPathFix(object):
|
|
'''Wrap the application in this middleware and configure the
|
|
front-end server to add these headers, to let you quietly bind
|
|
this to a URL other than / and to an HTTP scheme that is
|
|
different than what is used locally.
|
|
|
|
http://flask.pocoo.org/snippets/35/
|
|
|
|
In nginx:
|
|
location /myprefix {
|
|
proxy_pass http://127.0.0.1:8000;
|
|
proxy_set_header Host $host;
|
|
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
|
|
proxy_set_header X-Scheme $scheme;
|
|
proxy_set_header X-Script-Name /myprefix;
|
|
}
|
|
|
|
:param app: the WSGI application
|
|
'''
|
|
def __init__(self, app):
|
|
self.app = app
|
|
|
|
def __call__(self, environ, start_response):
|
|
script_name = environ.get('HTTP_X_SCRIPT_NAME', '')
|
|
if script_name:
|
|
environ['SCRIPT_NAME'] = script_name
|
|
path_info = environ['PATH_INFO']
|
|
if path_info.startswith(script_name):
|
|
environ['PATH_INFO'] = path_info[len(script_name):]
|
|
|
|
scheme = environ.get('HTTP_X_SCHEME', '')
|
|
if scheme:
|
|
environ['wsgi.url_scheme'] = scheme
|
|
return self.app(environ, start_response)
|
|
|
|
|
|
application = app
|
|
# patch app to handle non root url-s behind proxy & wsgi
|
|
app.wsgi_app = ReverseProxyPathFix(ProxyFix(application.wsgi_app))
|
|
|
|
if __name__ == "__main__":
|
|
run()
|