# -*- coding: utf8 -*-
"""
Burp-UI is a web-ui for burp backup written in python with Flask and
jQuery/Bootstrap
.. module:: burpui.app
:platform: Unix
:synopsis: Burp-UI app module.
.. moduleauthor:: Ziirish <hi+burpui@ziirish.me>
"""
import os
import time
import logging
from logging import Formatter
from .desc import __version__, __release__
from .extensions import create_celery, create_db, create_websocket, \
parse_db_setting, get_redis_server
[docs]def create_app(conf=None, verbose=0, logfile=None, **kwargs):
"""Initialize the whole application.
:param conf: Configuration file to use
:type conf: str
:param verbose: Set the verbosity level
:type verbose: int
:param logfile: Store the logs in the given file
:type logfile: str
:param kwargs: Extra options:
- gunicorn (bool): Enable gunicorn engine instead of flask's
default. Default is True.
- unittest (bool): Are we running tests (used for test only).
Default is False.
- debug (bool): Enable debug mode. Default is False.
- cli (bool): Are we running the CLI. Default is False.
- reverse_proxy (bool): Are we behind a reverse-proxy.
Default is True if gunicorn is True
:type kwargs: dict
:returns: A :class:`burpui.server.BUIServer` object
"""
from flask import g, request, session, render_template
from flask_login import LoginManager
from flask_bower import Bower
from flask_babel import gettext
from .utils import ReverseProxied, lookup_file, is_uuid
from .security import basic_login_from_request
from .server import BUIServer as BurpUI
from .sessions import session_manager
from .ext.cache import cache
from .ext.i18n import babel, get_locale
from .misc.auth.handler import BUIanon
logger = logging.getLogger('burp-ui')
gunicorn = kwargs.get('gunicorn', True)
unittest = kwargs.get('unittest', False)
debug = kwargs.get('debug', False)
cli = kwargs.get('cli', False)
reverse_proxy = kwargs.get('reverse_proxy', gunicorn)
celery_worker = kwargs.get('celery_worker', False)
websocket_server = kwargs.get('websocket_server', False)
# The debug argument used to be a boolean so we keep supporting this format
if isinstance(verbose, bool):
if verbose:
verbose = logging.DEBUG
else:
verbose = logging.CRITICAL
else:
levels = [
logging.CRITICAL,
logging.ERROR,
logging.WARNING,
logging.INFO,
logging.DEBUG
]
if verbose >= len(levels):
verbose = len(levels) - 1
if not verbose:
verbose = 0
verbose = levels[verbose]
if logfile:
from logging.handlers import RotatingFileHandler
handler = RotatingFileHandler(
logfile,
maxBytes=1024 * 1024 * 100,
backupCount=5
)
else:
from logging import StreamHandler
handler = StreamHandler()
if verbose > logging.DEBUG:
LOG_FORMAT = (
'[%(asctime)s] %(levelname)s in '
'%(module)s.%(funcName)s: %(message)s'
)
else:
LOG_FORMAT = (
'-' * 27 +
'[%(asctime)s]' +
'-' * 28 + '\n' +
'%(levelname)s in %(module)s.%(funcName)s ' +
'[%(pathname)s:%(lineno)d]:\n' +
'%(message)s\n' +
'-' * 80
)
handler.setLevel(verbose)
handler.setFormatter(Formatter(LOG_FORMAT))
logger.setLevel(verbose)
logger.addHandler(handler)
logger.debug(
'conf: {}\n'.format(conf) +
'verbose: {}\n'.format(logging.getLevelName(verbose)) +
'logfile: {}\n'.format(logfile) +
'gunicorn: {}\n'.format(gunicorn) +
'debug: {}\n'.format(debug) +
'unittest: {}\n'.format(unittest) +
'cli: {}\n'.format(cli) +
'reverse_proxy: {}'.format(reverse_proxy)
)
if not unittest: # pragma: no cover
from ._compat import patch_json
patch_json()
# We initialize the core
app = BurpUI()
if verbose:
app.enable_logger()
app.gunicorn = gunicorn
app.config['CFG'] = None
# Some config
app.config['BUI_CLI'] = cli
# FIXME: strange behavior when bundling errors
# app.config['BUNDLE_ERRORS'] = True
app.config['REMEMBER_COOKIE_HTTPONLY'] = True
if debug and not gunicorn: # pragma: no cover
app.config['DEBUG'] = True and not unittest
app.config['TESTING'] = True and not unittest
# Still need to test conf file here because the init function can be called
# by gunicorn directly
if conf:
app.config['CFG'] = lookup_file(conf, guess=False)
else:
app.config['CFG'] = lookup_file()
logger.info('Using configuration: {}'.format(app.config['CFG']))
app.setup(app.config['CFG'], unittest, cli)
if debug:
app.config.setdefault('TEMPLATES_AUTO_RELOAD', True)
app.config['TEMPLATES_AUTO_RELOAD'] = True
app.config['DEBUG'] = True
SENTRY_AVAILABLE = False
if app.demo:
try:
from .ext.sentry import sentry
sentry.init_app(app, dsn=app.config['BUI_DSN'])
SENTRY_AVAILABLE = True
except ImportError:
pass
# manage application secret key
if app.secret_key and \
(app.secret_key.lower() == 'none' or
(app.secret_key.lower() == 'random' and
gunicorn)): # pragma: no cover
logger.critical('Your setup is not secure! Please consider setting a'
' secret key in your configuration file')
app.secret_key = 'Burp-UI'
if not app.secret_key or app.secret_key.lower() == 'random':
from base64 import b64encode
app.secret_key = b64encode(os.urandom(256))
app.wsgi_app = ReverseProxied(app.wsgi_app, app)
# Manage reverse_proxy special tricks & improvements
if reverse_proxy: # pragma: no cover
from werkzeug.contrib.fixers import ProxyFix
app.wsgi_app = ProxyFix(app.wsgi_app)
if app.storage and app.storage.lower() == 'redis':
try:
# Session setup
if not app.session_db or \
str(app.session_db).lower() not in ['none', 'false']:
from redis import Redis
from .ext.session import sess
host, port, pwd = get_redis_server(app)
db = 0
if app.session_db and \
str(app.session_db).lower() not \
in ['redis', 'default', 'true']:
try: # pragma: no cover
(_, _, pwd, host, port, db) = \
parse_db_setting(app.session_db)
except ValueError as exp:
logger.warning(str(exp))
try:
db = int(db)
except ValueError:
db = 0
logger.debug(
'SESSION: Using redis://guest:****@{}:{}/{}'.format(
host,
port,
db)
)
red = Redis(host=host, port=port, db=db, password=pwd)
app.config['WITH_SRV_SESSION'] = True
app.config['SESSION_TYPE'] = 'redis'
app.config['SESSION_REDIS'] = red
app.config['SESSION_USE_SIGNER'] = app.secret_key is not None
app.config['SESSION_PERMANENT'] = False
sess.init_app(app)
session_manager.backend = red
except Exception as exp: # pragma: no cover
logger.warning('Unable to initialize session: {}'.format(str(exp)))
app.config['WITH_SRV_SESSION'] = False
try:
# Cache setup
if not app.cache_db or \
str(app.cache_db).lower() not in ['none', 'false']:
host, port, pwd = get_redis_server(app)
db = 1
if app.cache_db and \
str(app.cache_db).lower() not \
in ['redis', 'default', 'true']:
try: # pragma: no cover
(_, _, pwd, host, port, db) = \
parse_db_setting(app.cache_db)
except ValueError as exp:
logger.warning(str(exp))
try:
db = int(db)
except ValueError:
db = 1
logger.debug('CACHE: Using redis://guest:****@{}:{}/{}'.format(
host,
port,
db)
)
cache.init_app(
app,
config={
'CACHE_TYPE': 'redis',
'CACHE_REDIS_HOST': host,
'CACHE_REDIS_PORT': port,
'CACHE_REDIS_PASSWORD': pwd,
'CACHE_REDIS_DB': db
}
)
# clear cache at startup in case we removed or added servers
with app.app_context():
cache.clear()
else: # pragma: no cover
cache.init_app(app)
except Exception as exp: # pragma: no cover
logger.warning('Unable to initialize cache: {}'.format(str(exp)))
cache.init_app(app)
try:
# Limiter setup
if app.limiter and str(app.limiter).lower() not \
in ['none', 'false']: # pragma: no cover
from .ext.limit import limiter
app.config['RATELIMIT_HEADERS_ENABLED'] = True
if app.limiter and str(app.limiter).lower() not \
in ['default', 'redis', 'true']:
app.config['RATELIMIT_STORAGE_URL'] = app.limiter
else:
db = 3
host, port, pwd = get_redis_server(app)
if pwd:
conn = 'redis://guest:{}@{}:{}/{}'.format(
pwd,
host,
port,
db
)
else:
conn = 'redis://{}:{}/{}'.format(host, port, db)
app.config['RATELIMIT_STORAGE_URL'] = conn
(_, _, pwd, host, port, db) = parse_db_setting(
app.config['RATELIMIT_STORAGE_URL']
)
logger.debug(
'LIMITER: Using redis://guest:****@{}:{}/{}'.format(
host,
port,
db
)
)
limiter.init_app(app)
app.config['WITH_LIMIT'] = True
except ImportError: # pragma: no cover
logger.warning('Unable to load limiter. Did you run \'pip install '
'flask-limiter\'?')
except Exception as exp: # pragma: no cover
logger.warning('Unable to initialize limiter: {}'.format(str(exp)))
else:
cache.init_app(app)
# Initialize i18n
babel.init_app(app)
# Create SQLAlchemy if enabled
create_db(app, cli, unittest, celery_worker=celery_worker)
if not celery_worker:
from .api import api, apibp
from .routes import view, mypad
app.jinja_env.globals.update(
isinstance=isinstance,
list=list,
mypad=mypad,
version_id='{}-{}'.format(__version__, __release__),
)
# We initialize the API
api.load_all()
app.register_blueprint(apibp)
# Then we load our routes
app.register_blueprint(view)
# Initialize Bower ext
app.config.setdefault(
'BOWER_COMPONENTS_ROOT',
os.path.join('static', 'vendor')
)
app.config.setdefault('BOWER_REPLACE_URL_FOR', True)
bower = Bower()
bower.init_app(app)
# Order of the initialization matters!
# The websocket must be configured prior to the celery worker for instance
# Initialize Session Manager
session_manager.init_app(app)
# And the login_manager
app.login_manager = LoginManager()
app.login_manager.anonymous_user = BUIanon
app.login_manager.login_view = 'view.login'
app.login_manager.login_message_category = 'info'
app.login_manager.session_protection = 'strong'
# This is just to have the strings in the .po files
app.login_manager.login_message = gettext(
'Please log in to access this page.'
)
app.login_manager.needs_refresh_message = gettext(
'Please reauthenticate to access this page.'
)
# This will be called at runtime and will then translate the strings
app.login_manager.localize_callback = gettext
app.login_manager.init_app(app)
# Create WebSocket server
create_websocket(app, websocket_server, celery_worker, gunicorn, cli)
# Create celery app if enabled
create_celery(app, warn=False)
def _check_session(user, request, api=False):
"""Check if the session is in the db"""
if user and not session_manager.session_in_db(): # pragma: no cover
login = getattr(user, 'name', None)
if login and not is_uuid(login):
remember = session.get('persistent', False)
if not remember:
from flask_login import decode_cookie
remember_cookie = request.cookies.get(
app.config.get('REMEMBER_COOKIE_NAME'),
False
)
# check if the remember_cookie is legit
if remember_cookie and decode_cookie(remember_cookie):
remember = True
session_manager.store_session(
login,
request.remote_addr,
request.headers.get('User-Agent'),
remember,
api
)
elif login:
app.uhandler.remove(login)
@app.before_request
def setup_request():
g.version = '{}-{}'.format(__version__, __release__)
g.locale = get_locale()
g.now = round(time.time())
g.date_format = session.get('dateFormat', 'llll')
# make sure to store secure cookie if required
if app.scookie:
criteria = [
request.is_secure,
request.headers.get('X-Forwarded-Proto', 'http') == 'https'
]
app.config['SESSION_COOKIE_SECURE'] = \
app.config['REMEMBER_COOKIE_SECURE'] = any(criteria)
if '_extra' in request.args:
session['_extra'] = request.args.get('_extra')
g._extra = session.get('_extra', '')
@app.login_manager.user_loader
def load_user(userid):
"""User loader callback"""
if app.auth != 'none':
user = app.uhandler.user(userid)
if not user:
return None
if 'X-Language' in request.headers:
language = request.headers.get('X-Language')
user.language = language
session['language'] = language
if '_id' not in session:
from flask_login import login_user
# if _id is not in session, it means we loaded the user from
# cache/db using the remember cookie so we need to login it
login_user(user, remember=user.is_authenticated, fresh=False)
_check_session(user, request)
return user
return None
@app.login_manager.request_loader
def load_user_from_request(request):
"""User loader from request callback"""
if app.auth != 'none':
user = basic_login_from_request(request, app)
_check_session(user, request, True)
return user
@app.after_request
def after_request(response):
if getattr(g, 'basic_session', False):
if session_manager.invalidate_current_session():
session_manager.delete_session()
return response
return app
if app.demo and SENTRY_AVAILABLE:
@app.errorhandler(500)
def internal_server_error(error):
from .ext.sentry import sentry
return render_template(
'500_sentry.html',
event_id=g.sentry_event_id,
public_dsn=sentry.client.get_public_dsn('https')
)
init = create_app
