isso/isso/__init__.py
Martin Zimmermann 65f260d0ba show session-key on application startup
Maybe useful to see that it really changes if unset. Also reduced key
size to 16 bytes form /dev/urandom (cosmetic reason, still enough).
2013-12-17 13:40:32 +01:00

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#!/usr/bin/env python
# -*- encoding: utf-8 -*-
#
# The MIT License (MIT)
#
# Copyright (c) 2012-2013 Martin Zimmermann.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# Isso a lightweight Disqus alternative
from __future__ import print_function
import pkg_resources
dist = pkg_resources.get_distribution("isso")
# check if exectuable is `isso` and gevent is available
import sys
if sys.argv[0].startswith("isso"):
try:
import gevent.monkey; gevent.monkey.patch_all()
except ImportError:
pass
import os
import errno
import logging
import tempfile
from os.path import dirname, join
from argparse import ArgumentParser
from functools import partial, reduce
from itsdangerous import URLSafeTimedSerializer
from werkzeug.routing import Map
from werkzeug.exceptions import HTTPException, InternalServerError
from werkzeug.wsgi import SharedDataMiddleware
from werkzeug.local import Local, LocalManager
from werkzeug.serving import run_simple
from werkzeug.contrib.fixers import ProxyFix
from werkzeug.contrib.profiler import ProfilerMiddleware
local = Local()
local_manager = LocalManager([local])
from isso import db, migrate, wsgi, ext, views
from isso.core import ThreadedMixin, ProcessMixin, uWSGIMixin, Config
from isso.utils import parse, http, JSONRequest, origin
from isso.views import comments
from isso.ext.notifications import Stdout, SMTP
logging.getLogger('werkzeug').setLevel(logging.ERROR)
logging.basicConfig(
level=logging.INFO,
format="%(asctime)s %(levelname)s: %(message)s")
logger = logging.getLogger("isso")
class Isso(object):
salt = b"Eech7co8Ohloopo9Ol6baimi"
def __init__(self, conf):
self.conf = conf
self.db = db.SQLite3(conf.get('general', 'dbpath'), conf)
self.signer = URLSafeTimedSerializer(conf.get('general', 'session-key'))
super(Isso, self).__init__(conf)
subscribers = []
subscribers.append(Stdout(None))
if conf.get("general", "notify") == "smtp":
subscribers.append(SMTP(self))
self.signal = ext.Signal(*subscribers)
self.urls = Map()
views.Info(self)
comments.API(self)
def sign(self, obj):
return self.signer.dumps(obj)
def unsign(self, obj, max_age=None):
return self.signer.loads(obj, max_age=max_age or self.conf.getint('general', 'max-age'))
def dispatch(self, request):
local.request = request
local.host = wsgi.host(request.environ)
local.origin = origin(self.conf.getiter("general", "host"))(request.environ)
adapter = self.urls.bind_to_environ(request.environ)
try:
handler, values = adapter.match()
except HTTPException as e:
return e
else:
try:
response = handler(request.environ, request, **values)
except HTTPException as e:
return e
except Exception:
logger.exception("%s %s", request.method, request.environ["PATH_INFO"])
return InternalServerError()
else:
return response
def wsgi_app(self, environ, start_response):
response = self.dispatch(JSONRequest(environ))
return response(environ, start_response)
def __call__(self, environ, start_response):
return self.wsgi_app(environ, start_response)
def make_app(conf=None, threading=True, multiprocessing=False, uwsgi=False):
if threading:
class App(Isso, ThreadedMixin):
pass
if multiprocessing:
class App(Isso, ProcessMixin):
pass
if uwsgi:
class App(Isso, uWSGIMixin):
pass
isso = App(conf)
# show session-key (to see that it changes randomely if unset)
logger.info("session-key = %s", isso.conf.get("general", "session-key"))
# check HTTP server connection
for host in conf.getiter("general", "host"):
with http.curl('HEAD', host, '/', 5) as resp:
if resp is not None:
logger.info("connected to %s", host)
break
else:
logger.warn("unable to connect to %s", ", ".join(conf.getiter("general", "host")))
wrapper = [local_manager.make_middleware]
if isso.conf.getboolean("server", "profile"):
wrapper.append(partial(ProfilerMiddleware,
sort_by=("cumtime", ), restrictions=("isso/(?!lib)", 10)))
wrapper.append(partial(SharedDataMiddleware, exports={
'/js': join(dirname(__file__), 'js/'),
'/css': join(dirname(__file__), 'css/')}))
wrapper.append(partial(wsgi.CORSMiddleware,
origin=origin(isso.conf.getiter("general", "host"))))
wrapper.extend([wsgi.SubURI, ProxyFix])
return reduce(lambda x, f: f(x), wrapper, isso)
def main():
parser = ArgumentParser(description="a blog comment hosting service")
subparser = parser.add_subparsers(help="commands", dest="command")
parser.add_argument('--version', action='version', version='%(prog)s ' + dist.version)
parser.add_argument("-c", dest="conf", default="/etc/isso.conf",
metavar="/etc/isso.conf", help="set configuration file")
imprt = subparser.add_parser('import', help="import Disqus XML export")
imprt.add_argument("dump", metavar="FILE")
imprt.add_argument("-n", "--dry-run", dest="dryrun", action="store_true",
help="perform a trial run with no changes made")
serve = subparser.add_parser("run", help="run server")
args = parser.parse_args()
conf = Config.load(args.conf)
if args.command == "import":
xxx = tempfile.NamedTemporaryFile()
dbpath = conf.get("general", "dbpath") if not args.dryrun else xxx.name
conf.set("guard", "enabled", "off")
migrate.disqus(db.SQLite3(dbpath, conf), args.dump)
sys.exit(0)
if conf.get("server", "listen").startswith("http://"):
host, port, _ = parse.host(conf.get("server", "listen"))
try:
from gevent.pywsgi import WSGIServer
WSGIServer((host, port), make_app(conf)).serve_forever()
except ImportError:
run_simple(host, port, make_app(conf), threaded=True,
use_reloader=conf.getboolean('server', 'reload'))
else:
sock = conf.get("server", "listen").partition("unix://")[2]
try:
os.unlink(sock)
except OSError as ex:
if ex.errno != errno.ENOENT:
raise
wsgi.SocketHTTPServer(sock, make_app(conf)).serve_forever()