mirror of https://github.com/searxng/searxng.git
366 lines
12 KiB
Python
366 lines
12 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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import json
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import cStringIO
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import os
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from flask import Flask, request, render_template
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from flask import url_for, Response, make_response, redirect
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from flask import send_from_directory
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from searx import settings, searx_dir
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from searx.engines import search
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from searx.engines import categories
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from searx.engines import engines
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from searx.engines import get_engines_stats
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from searx.engines import engine_shortcuts
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from searx.utils import UnicodeWriter
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from searx.utils import highlight_content, html_to_text
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from searx.languages import language_codes
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from flask.ext.babel import Babel
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app = Flask(
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__name__,
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static_folder=os.path.join(searx_dir, 'static'),
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template_folder=os.path.join(searx_dir, 'templates')
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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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@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 render(template_name, **kwargs):
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global categories
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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()) if x != 'general')
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if not 'selected_categories' in kwargs:
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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 len(kwargs['selected_categories']):
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kwargs['selected_categories'] = ['general']
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return render_template(template_name, **kwargs)
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def parse_query(query):
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query_engines = []
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query_parts = query.split()
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if query_parts[0].startswith('!'):
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prefix = query_parts[0][1:].replace('_', ' ')
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if prefix in engine_shortcuts:
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query_engines.append({'category': 'none',
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'name': engine_shortcuts[prefix]})
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elif prefix in engines:
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query_engines.append({'category': 'none',
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'name': prefix})
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elif prefix in categories:
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query_engines.extend({'category': prefix,
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'name': engine.name}
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for engine in categories[prefix])
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if len(query_engines):
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query = query.replace(query_parts[0], '', 1).strip()
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return query, query_engines
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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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paging = False
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lang = 'all'
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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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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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if not request_data.get('q'):
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return render('index.html')
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pageno_param = request_data.get('pageno', '1')
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if not pageno_param.isdigit() or int(pageno_param) < 1:
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return render('index.html')
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pageno = int(pageno_param)
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selected_categories = []
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query, selected_engines = parse_query(request_data['q'].encode('utf-8'))
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if len(selected_engines):
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selected_categories = list(set(engine['category']
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for engine in selected_engines))
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else:
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for pd_name, pd in request_data.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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if not len(selected_categories):
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cookie_categories = request.cookies.get('categories', '')
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cookie_categories = cookie_categories.split(',')
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for ccateg in cookie_categories:
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if ccateg in categories:
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selected_categories.append(ccateg)
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if not len(selected_categories):
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selected_categories = ['general']
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for categ in selected_categories:
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selected_engines.extend({'category': categ,
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'name': x.name}
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for x in categories[categ])
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results, suggestions = search(query,
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request,
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selected_engines,
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pageno,
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lang)
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for result in results:
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if not paging and engines[result['engine']].paging:
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paging = True
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if request_data.get('format', 'html') == 'html':
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if 'content' in result:
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result['content'] = highlight_content(result['content'], query)
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result['title'] = highlight_content(result['title'], query)
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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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result['title'] = html_to_text(result['title']).strip()
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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'] = '{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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if request_data.get('format') == 'json':
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return Response(json.dumps({'query': query, 'results': results}),
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mimetype='application/json')
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elif 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 len(results):
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csv.writerow(keys)
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for row in 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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content_disp = 'attachment;Filename=searx_-_{0}.csv'.format(query)
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response.headers.add('Content-Disposition', content_disp)
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return response
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elif 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=results,
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q=request_data['q'],
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number_of_results=len(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=results,
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q=request_data['q'],
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selected_categories=selected_categories,
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paging=paging,
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pageno=pageno,
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suggestions=suggestions
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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('about.html')
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@app.route('/engines', methods=['GET'])
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def list_engines():
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"""Render engines page.
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List of all supported engines.
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"""
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return render('engines.html',
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categs=categories.items(),
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shortcuts={y:x for x,y in engine_shortcuts.items()})
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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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if request.method == 'POST':
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selected_categories = []
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locale = None
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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 == '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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resp = make_response(redirect('/'))
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if locale:
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# cookie max age: 4 weeks
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resp.set_cookie(
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'locale', locale,
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max_age=60 * 60 * 24 * 7 * 4
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)
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if lang:
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# cookie max age: 4 weeks
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resp.set_cookie(
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'language', lang,
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max_age=60 * 60 * 24 * 7 * 4
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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=60 * 60 * 24 * 7 * 4
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)
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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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@app.route('/stats', methods=['GET'])
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def stats():
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"""Render engine statistics page."""
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global categories
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stats = get_engines_stats()
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return render('stats.html', stats=stats)
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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: /engines
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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', method=method, 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, 'static/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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from gevent import monkey
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monkey.patch_all()
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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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if __name__ == "__main__":
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run()
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