mirror of https://github.com/searxng/searxng.git
518 lines
16 KiB
Python
518 lines
16 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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from gevent import monkey
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monkey.patch_all()
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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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from datetime import datetime, timedelta
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from itertools import chain
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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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)
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from searx.https_rewrite import https_rules
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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 backends as autocomplete_backends
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static_path, templates_path, themes =\
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get_themes(settings['themes_path']
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if settings.get('themes_path')
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else searx_dir)
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default_theme = settings['server'].get('default_theme', 'default')
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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.secret_key = settings['server']['secret_key']
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babel = Babel(app)
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#TODO configurable via settings.yml
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favicons = ['wikipedia', 'youtube', 'vimeo', 'soundcloud',
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'twitter', 'stackoverflow', 'github']
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cookie_max_age = 60 * 60 * 24 * 365 * 23 # 23 years
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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 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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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',
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request.cookies.get('theme',
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default_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 url_for_theme(endpoint, override_theme=None, **values):
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if endpoint == 'static' and values.get('filename', None):
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theme_name = get_current_theme_name(override=override_theme)
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values['filename'] = "{}/{}".format(theme_name, values['filename'])
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return url_for(endpoint, **values)
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def render(template_name, override_theme=None, **kwargs):
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blocked_engines = request.cookies.get('blocked_engines', '').split(',')
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autocomplete = request.cookies.get('autocomplete')
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if autocomplete not in autocomplete_backends:
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autocomplete = None
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nonblocked_categories = (engines[e].categories
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for e in engines
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if e not in blocked_engines)
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nonblocked_categories = set(chain.from_iterable(nonblocked_categories))
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if not 'categories' 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 not 'selected_categories' 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.cookies.get('categories', '').split(',')
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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 not 'autocomplete' in kwargs:
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kwargs['autocomplete'] = autocomplete
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kwargs['method'] = request.cookies.get('method', 'POST')
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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['theme'] = get_current_theme_name(override=override_theme)
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return render_template(
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'{}/{}'.format(kwargs['theme'], template_name), **kwargs)
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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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search.results, search.suggestions, search.answers, search.infoboxes = search.search(request)
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for result in search.results:
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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 settings['server']['https_rewrite']\
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and result['parsed_url'].scheme == 'http':
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for http_regex, https_url in https_rules:
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if http_regex.match(result['url']):
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result['url'] = http_regex.sub(https_url, result['url'])
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# TODO result['parsed_url'].scheme
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break
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# HTTPS rewrite
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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 'content' in result:
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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'])
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.strip().split())
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if len(result['url']) > 74:
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url_parts = result['url'][:35], result['url'][-35:]
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result['pretty_url'] = u'{0}[...]{1}'.format(*url_parts)
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else:
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result['pretty_url'] = result['url']
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for engine in result['engines']:
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if engine in favicons:
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result['favicon'] = engine
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# TODO, check if timezone is calculated right
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if 'publishedDate' in result:
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if result['publishedDate'].replace(tzinfo=None)\
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>= datetime.now() - timedelta(days=1):
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timedifference = datetime.now() - result['publishedDate']\
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.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) # noqa
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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['pubdate'] = result['publishedDate']\
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.strftime('%a, %d %b %Y %H:%M:%S %z')
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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.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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if search.results:
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csv.writerow(keys)
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for row in search.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)
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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.results,
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q=search.request_data['q'],
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number_of_results=len(search.results),
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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.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.suggestions,
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answers=search.answers,
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infoboxes=search.infoboxes,
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theme=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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if request.cookies.get('blocked_engines'):
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blocked_engines = request.cookies['blocked_engines'].split(',') # noqa
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else:
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blocked_engines = []
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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
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# run autocompleter
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completer = autocomplete_backends.get(request.cookies.get('autocomplete'))
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# check if valid autocompleter is selected
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if not completer:
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return
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# run autocompletion
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raw_results = completer(query.getSearchQuery())
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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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result_query = query
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result_query.changeSearchQuery(result)
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# add parsed result
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results.append(result_query.getFullQuery())
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# return autocompleter results
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if request_data.get('format') == 'x-suggestions':
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return Response(json.dumps([query, results]),
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mimetype='application/json')
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else:
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return Response(json.dumps(results),
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mimetype='application/json')
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@app.route('/preferences', methods=['GET', 'POST'])
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def preferences():
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"""Render preferences page.
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Settings that are going to be saved as cookies."""
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lang = None
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if request.cookies.get('language')\
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and request.cookies['language'] in (x[0] for x in language_codes):
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lang = request.cookies['language']
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blocked_engines = []
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if request.method == 'GET':
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blocked_engines = request.cookies.get('blocked_engines', '').split(',')
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else: # on save
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selected_categories = []
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locale = None
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autocomplete = ''
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method = 'POST'
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for pd_name, pd in request.form.items():
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if pd_name.startswith('category_'):
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category = pd_name[9:]
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if not category in categories:
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continue
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selected_categories.append(category)
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elif pd_name == 'locale' and pd in settings['locales']:
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locale = pd
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elif pd_name == 'autocomplete':
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autocomplete = pd
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elif pd_name == 'language' and (pd == 'all' or
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pd in (x[0] for
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x in language_codes)):
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lang = pd
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elif pd_name == 'method':
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method = pd
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elif pd_name.startswith('engine_'):
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engine_name = pd_name.replace('engine_', '', 1)
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if engine_name in engines:
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blocked_engines.append(engine_name)
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elif pd_name == 'theme':
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theme = pd if pd in themes else default_theme
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resp = make_response(redirect(url_for('index')))
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user_blocked_engines = request.cookies.get('blocked_engines', '').split(',') # noqa
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if sorted(blocked_engines) != sorted(user_blocked_engines):
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resp.set_cookie(
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'blocked_engines', ','.join(blocked_engines),
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max_age=cookie_max_age
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)
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if locale:
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resp.set_cookie(
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'locale', locale,
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max_age=cookie_max_age
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)
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if lang:
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resp.set_cookie(
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'language', lang,
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max_age=cookie_max_age
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)
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if selected_categories:
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# cookie max age: 4 weeks
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resp.set_cookie(
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'categories', ','.join(selected_categories),
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max_age=cookie_max_age
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)
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resp.set_cookie(
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'autocomplete', autocomplete,
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max_age=cookie_max_age
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)
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resp.set_cookie('method', method, max_age=cookie_max_age)
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resp.set_cookie(
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'theme', theme, max_age=cookie_max_age)
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return resp
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return render('preferences.html',
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locales=settings['locales'],
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current_locale=get_locale(),
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current_language=lang or 'all',
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language_codes=language_codes,
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categs=categories.items(),
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blocked_engines=blocked_engines,
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autocomplete_backends=autocomplete_backends,
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shortcuts={y: x for x, y in engine_shortcuts.items()},
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themes=themes,
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theme=get_current_theme_name())
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@app.route('/stats', methods=['GET'])
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def stats():
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"""Render engine statistics page."""
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stats = get_engines_stats()
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return render(
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'stats.html',
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stats=stats,
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)
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@app.route('/robots.txt', methods=['GET'])
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def robots():
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return Response("""User-agent: *
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Allow: /
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Allow: /about
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Disallow: /stats
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Disallow: /preferences
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""", mimetype='text/plain')
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@app.route('/opensearch.xml', methods=['GET'])
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def opensearch():
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method = 'post'
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# chrome/chromium only supports HTTP GET....
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if request.headers.get('User-Agent', '').lower().find('webkit') >= 0:
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method = 'get'
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ret = render('opensearch.xml',
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opensearch_method=method,
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host=get_base_url())
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resp = Response(response=ret,
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status=200,
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mimetype="application/xml")
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return resp
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@app.route('/favicon.ico')
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def favicon():
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return send_from_directory(os.path.join(app.root_path,
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'static',
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get_current_theme_name(),
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'img'),
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'favicon.png',
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mimetype='image/vnd.microsoft.icon')
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def run():
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app.run(
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debug=settings['server']['debug'],
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use_debugger=settings['server']['debug'],
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port=settings['server']['port']
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)
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application = app
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if __name__ == "__main__":
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run()
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