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This document is for an old release of Galaxy. You can alternatively view this page in the latest release if it exists or view the top of the latest release's documentation.
Source code for galaxy.web.framework.webapp
"""
"""
import datetime
import hashlib
import inspect
import logging
import os
import random
import socket
import string
import time
from importlib import import_module
import mako.lookup
import mako.runtime
from babel import Locale
from babel.support import Translations
from Cheetah.Template import Template
from six import string_types
from six.moves.http_cookies import CookieError
from six.moves.urllib.parse import urlparse
from sqlalchemy import and_, true
from sqlalchemy.orm import joinedload
from sqlalchemy.orm.exc import NoResultFound
from galaxy import util
from galaxy.exceptions import ConfigurationError, MessageException
from galaxy.managers import context
from galaxy.util import (
asbool,
safe_makedirs,
safe_str_cmp
)
from galaxy.util.sanitize_html import sanitize_html
from galaxy.web.framework import (
base,
helpers,
url_for
)
from galaxy.web.stack import get_app_kwds
log = logging.getLogger(__name__)
UCSC_SERVERS = (
'hgw1.cse.ucsc.edu',
'hgw2.cse.ucsc.edu',
'hgw3.cse.ucsc.edu',
'hgw4.cse.ucsc.edu',
'hgw5.cse.ucsc.edu',
'hgw6.cse.ucsc.edu',
'hgw7.cse.ucsc.edu',
'hgw8.cse.ucsc.edu',
'hgw1.soe.ucsc.edu',
'hgw2.soe.ucsc.edu',
'hgw3.soe.ucsc.edu',
'hgw4.soe.ucsc.edu',
'hgw5.soe.ucsc.edu',
'hgw6.soe.ucsc.edu',
'hgw7.soe.ucsc.edu',
'hgw8.soe.ucsc.edu',
)
[docs]class WebApplication(base.WebApplication):
"""
Base WSGI application instantiated for all Galaxy webapps.
A web application that:
* adds API and UI controllers by scanning given directories and
importing all modules found there.
* has a security object.
* builds mako template lookups.
* generates GalaxyWebTransactions.
"""
[docs] def __init__(self, galaxy_app, session_cookie='galaxysession', name=None):
self.name = name
base.WebApplication.__init__(self)
self.set_transaction_factory(lambda e: self.transaction_chooser(e, galaxy_app, session_cookie))
# Mako support
self.mako_template_lookup = self.create_mako_template_lookup(galaxy_app, name)
# Security helper
self.security = galaxy_app.security
[docs] def create_mako_template_lookup(self, galaxy_app, name):
paths = []
# First look in webapp specific directory
if name is not None:
paths.append(os.path.join(galaxy_app.config.template_path, 'webapps', name))
# Then look in root directory
paths.append(galaxy_app.config.template_path)
# Create TemplateLookup with a small cache
return mako.lookup.TemplateLookup(directories=paths,
module_directory=galaxy_app.config.template_cache,
collection_size=500,
output_encoding='utf-8')
[docs] def handle_controller_exception(self, e, trans, **kwargs):
if isinstance(e, MessageException):
# In the case of a controller exception, sanitize to make sure
# unsafe html input isn't reflected back to the user
return trans.show_message(sanitize_html(e.err_msg), e.type)
[docs] def make_body_iterable(self, trans, body):
return base.WebApplication.make_body_iterable(self, trans, body)
[docs] def transaction_chooser(self, environ, galaxy_app, session_cookie):
return GalaxyWebTransaction(environ, galaxy_app, self, session_cookie)
[docs] def add_ui_controllers(self, package_name, app):
"""
Search for UI controllers in `package_name` and add
them to the webapp.
"""
from galaxy.web.base.controller import BaseUIController
from galaxy.web.base.controller import ControllerUnavailable
package = import_module(package_name)
controller_dir = package.__path__[0]
for fname in os.listdir(controller_dir):
if not(fname.startswith("_")) and fname.endswith(".py"):
name = fname[:-3]
module_name = package_name + "." + name
try:
module = import_module(module_name)
except ControllerUnavailable as exc:
log.debug("%s could not be loaded: %s" % (module_name, str(exc)))
continue
# Look for a controller inside the modules
for key in dir(module):
T = getattr(module, key)
if inspect.isclass(T) and T is not BaseUIController and issubclass(T, BaseUIController):
controller = self._instantiate_controller(T, app)
self.add_ui_controller(name, controller)
[docs] def add_api_controllers(self, package_name, app):
"""
Search for UI controllers in `package_name` and add
them to the webapp.
"""
from galaxy.web.base.controller import BaseAPIController
from galaxy.web.base.controller import ControllerUnavailable
package = import_module(package_name)
controller_dir = package.__path__[0]
for fname in os.listdir(controller_dir):
if not(fname.startswith("_")) and fname.endswith(".py"):
name = fname[:-3]
module_name = package_name + "." + name
try:
module = import_module(module_name)
except ControllerUnavailable as exc:
log.debug("%s could not be loaded: %s" % (module_name, str(exc)))
continue
for key in dir(module):
T = getattr(module, key)
# Exclude classes such as BaseAPIController and BaseTagItemsController
if inspect.isclass(T) and not key.startswith("Base") and issubclass(T, BaseAPIController):
# By default use module_name, but allow controller to override name
controller_name = getattr(T, "controller_name", name)
controller = self._instantiate_controller(T, app)
self.add_api_controller(controller_name, controller)
def _instantiate_controller(self, T, app):
""" Extension point, allow apps to contstruct controllers differently,
really just used to stub out actual controllers for routes testing.
"""
return T(app)
[docs]class GalaxyWebTransaction(base.DefaultWebTransaction,
context.ProvidesAppContext, context.ProvidesUserContext, context.ProvidesHistoryContext):
"""
Encapsulates web transaction specific state for the Galaxy application
(specifically the user's "cookie" session and history)
"""
[docs] def __init__(self, environ, app, webapp, session_cookie=None):
self.app = app
self.webapp = webapp
self.security = webapp.security
base.DefaultWebTransaction.__init__(self, environ)
self.setup_i18n()
self.expunge_all()
config = self.app.config
self.debug = asbool(config.get('debug', False))
x_frame_options = getattr(config, 'x_frame_options', None)
if x_frame_options:
self.response.headers['X-Frame-Options'] = x_frame_options
# Flag indicating whether we are in workflow building mode (means
# that the current history should not be used for parameter values
# and such).
self.workflow_building_mode = False
# Flag indicating whether this is an API call and the API key user is an administrator
self.api_inherit_admin = False
self.__user = None
self.galaxy_session = None
self.error_message = None
# set any cross origin resource sharing headers if configured to do so
self.set_cors_headers()
if self.environ.get('is_api_request', False):
# With API requests, if there's a key, use it and associate the
# user with the transaction.
# If not, check for an active session but do not create one.
# If an error message is set here, it's sent back using
# trans.show_error in the response -- in expose_api.
self.error_message = self._authenticate_api(session_cookie)
elif self.app.name == "reports":
self.galaxy_session = None
else:
# This is a web request, get or create session.
self._ensure_valid_session(session_cookie)
if self.galaxy_session:
# When we've authenticated by session, we have to check the
# following.
# Prevent deleted users from accessing Galaxy
if config.use_remote_user and self.galaxy_session.user.deleted:
self.response.send_redirect(url_for('/static/user_disabled.html'))
if config.require_login:
self._ensure_logged_in_user(environ, session_cookie)
if config.session_duration:
# TODO DBTODO All ajax calls from the client need to go through
# a single point of control where we can do things like
# redirect/etc. This is API calls as well as something like 40
# @web.json requests that might not get handled well on the
# clientside.
#
# Make sure we're not past the duration, and either log out or
# update timestamp.
now = datetime.datetime.now()
if self.galaxy_session.last_action:
expiration_time = self.galaxy_session.last_action + datetime.timedelta(minutes=config.session_duration)
else:
expiration_time = now
self.galaxy_session.last_action = now - datetime.timedelta(seconds=1)
self.sa_session.add(self.galaxy_session)
self.sa_session.flush()
if expiration_time < now:
# Expiration time has passed.
self.handle_user_logout()
if self.environ.get('is_api_request', False):
self.response.status = 401
self.user = None
self.galaxy_session = None
else:
self.response.send_redirect(url_for(controller='user',
action='login',
message="You have been logged out due to inactivity. Please log in again to continue using Galaxy.",
status='info',
use_panels=True))
else:
self.galaxy_session.last_action = now
self.sa_session.add(self.galaxy_session)
self.sa_session.flush()
[docs] def setup_i18n(self):
locales = []
if 'HTTP_ACCEPT_LANGUAGE' in self.environ:
# locales looks something like: ['en', 'en-us;q=0.7', 'ja;q=0.3']
client_locales = self.environ['HTTP_ACCEPT_LANGUAGE'].split(',')
for locale in client_locales:
try:
locales.append(Locale.parse(locale.split(';')[0].strip(), sep='-').language)
except Exception as e:
log.debug("Error parsing locale '%s'. %s: %s", locale, type(e), e)
if not locales:
# Default to English
locales = 'en'
t = Translations.load(dirname='locale', locales=locales, domain='ginga')
self.template_context.update(dict(_=t.ugettext, n_=t.ugettext, N_=t.ungettext))
[docs] def set_cors_headers(self):
"""Allow CORS requests if configured to do so by echoing back the request's
'Origin' header (if any) as the response header 'Access-Control-Allow-Origin'
"""
# TODO: in order to use these, we need preflight to work, and to do that we
# need the OPTIONS method on all api calls (or everywhere we can POST/PUT)
# ALLOWED_METHODS = ( 'POST', 'PUT' )
# do not set any access control headers if not configured for it (common case)
if not self.app.config.get('allowed_origin_hostnames', None):
return
# do not set any access control headers if there's no origin header on the request
origin_header = self.request.headers.get("Origin", None)
if not origin_header:
return
# singular match
def matches_allowed_origin(origin, allowed_origin):
if isinstance(allowed_origin, string_types):
return origin == allowed_origin
match = allowed_origin.match(origin)
return match and match.group() == origin
# check for '*' or compare to list of allowed
def is_allowed_origin(origin):
# localhost uses no origin header (== null)
if not origin:
return False
for allowed_origin in self.app.config.allowed_origin_hostnames:
if allowed_origin == '*' or matches_allowed_origin(origin, allowed_origin):
return True
return False
# boil origin header down to hostname
origin = urlparse(origin_header).hostname
# check against the list of allowed strings/regexp hostnames, echo original if cleared
if is_allowed_origin(origin):
self.response.headers['Access-Control-Allow-Origin'] = origin_header
# TODO: see the to do on ALLOWED_METHODS above
# self.response.headers[ 'Access-Control-Allow-Methods' ] = ', '.join( ALLOWED_METHODS )
# NOTE: raising some errors (such as httpexceptions), will remove the header
# (e.g. client will get both cors error and 404 inside that)
[docs] def get_user(self):
"""Return the current user if logged in or None."""
if self.galaxy_session:
return self.galaxy_session.user
else:
return self.__user
[docs] def set_user(self, user):
"""Set the current user."""
if self.galaxy_session:
self.galaxy_session.user = user
self.sa_session.add(self.galaxy_session)
self.sa_session.flush()
self.__user = user
user = property(get_user, set_user)
[docs] def get_cookie(self, name='galaxysession'):
"""Convenience method for getting a session cookie"""
try:
# If we've changed the cookie during the request return the new value
if name in self.response.cookies:
return self.response.cookies[name].value
else:
return self.request.cookies[name].value
except Exception:
return None
[docs] def set_cookie(self, value, name='galaxysession', path='/', age=90, version='1'):
"""Convenience method for setting a session cookie"""
# The galaxysession cookie value must be a high entropy 128 bit random number encrypted
# using a server secret key. Any other value is invalid and could pose security issues.
self.response.cookies[name] = value
self.response.cookies[name]['path'] = path
self.response.cookies[name]['max-age'] = 3600 * 24 * age # 90 days
tstamp = time.localtime(time.time() + 3600 * 24 * age)
self.response.cookies[name]['expires'] = time.strftime('%a, %d-%b-%Y %H:%M:%S GMT', tstamp)
self.response.cookies[name]['version'] = version
https = self.request.environ["wsgi.url_scheme"] == "https"
if https:
self.response.cookies[name]['secure'] = True
try:
self.response.cookies[name]['httponly'] = True
except CookieError as e:
log.warning("Error setting httponly attribute in cookie '%s': %s" % (name, e))
def _authenticate_api(self, session_cookie):
"""
Authenticate for the API via key or session (if available).
"""
api_key = self.request.params.get('key', None) or self.request.headers.get('x-api-key', None)
secure_id = self.get_cookie(name=session_cookie)
api_key_supplied = self.environ.get('is_api_request', False) and api_key
if api_key_supplied and self._check_master_api_key(api_key):
self.api_inherit_admin = True
log.info("Session authenticated using Galaxy master api key")
self.user = None
self.galaxy_session = None
elif api_key_supplied:
# Sessionless API transaction, we just need to associate a user.
try:
provided_key = self.sa_session.query(self.app.model.APIKeys).filter(self.app.model.APIKeys.table.c.key == api_key).one()
except NoResultFound:
return 'Provided API key is not valid.'
if provided_key.user.deleted:
return 'User account is deactivated, please contact an administrator.'
newest_key = provided_key.user.api_keys[0]
if newest_key.key != provided_key.key:
return 'Provided API key has expired.'
self.set_user(provided_key.user)
elif secure_id:
# API authentication via active session
# Associate user using existing session
# This will throw an exception under remote auth with anon users.
try:
self._ensure_valid_session(session_cookie)
except Exception:
log.exception("Exception during Session-based API authentication, this was most likely an attempt to use an anonymous cookie under remote authentication (so, no user), which we don't support.")
self.user = None
self.galaxy_session = None
else:
# Anonymous API interaction -- anything but @expose_api_anonymous will fail past here.
self.user = None
self.galaxy_session = None
def _check_master_api_key(self, api_key):
master_api_key = getattr(self.app.config, 'master_api_key', None)
if not master_api_key:
return False
# Hash keys to make them the same size, so we can do safe comparison.
master_hash = hashlib.sha256(master_api_key).hexdigest()
provided_hash = hashlib.sha256(api_key).hexdigest()
return safe_str_cmp(master_hash, provided_hash)
def _ensure_valid_session(self, session_cookie, create=True):
"""
Ensure that a valid Galaxy session exists and is available as
trans.session (part of initialization)
Support for universe_session and universe_user cookies has been
removed as of 31 Oct 2008.
"""
# Try to load an existing session
secure_id = self.get_cookie(name=session_cookie)
galaxy_session = None
prev_galaxy_session = None
user_for_new_session = None
invalidate_existing_session = False
# Track whether the session has changed so we can avoid calling flush
# in the most common case (session exists and is valid).
galaxy_session_requires_flush = False
if secure_id:
# Decode the cookie value to get the session_key
session_key = self.security.decode_guid(secure_id)
try:
# Make sure we have a valid UTF-8 string
session_key = session_key.encode('utf8')
except UnicodeDecodeError:
# We'll end up creating a new galaxy_session
session_key = None
if session_key:
# Retrieve the galaxy_session id via the unique session_key
galaxy_session = self.sa_session.query(self.app.model.GalaxySession) \
.filter(and_(self.app.model.GalaxySession.table.c.session_key == session_key,
self.app.model.GalaxySession.table.c.is_valid == true())).options(joinedload("user")).first()
# If remote user is in use it can invalidate the session and in some
# cases won't have a cookie set above, so we need to to check some
# things now.
if self.app.config.use_remote_user:
remote_user_email = self.environ.get(self.app.config.remote_user_header, None)
if galaxy_session:
if remote_user_email and galaxy_session.user is None:
# No user, associate
galaxy_session.user = self.get_or_create_remote_user(remote_user_email)
galaxy_session_requires_flush = True
elif (remote_user_email and
(galaxy_session.user.email != remote_user_email) and
((not self.app.config.allow_user_impersonation) or
(remote_user_email not in self.app.config.admin_users_list))):
# Session exists but is not associated with the correct
# remote user, and the currently set remote_user is not a
# potentially impersonating admin.
invalidate_existing_session = True
user_for_new_session = self.get_or_create_remote_user(remote_user_email)
log.warning("User logged in as '%s' externally, but has a cookie as '%s' invalidating session",
remote_user_email, galaxy_session.user.email)
elif remote_user_email:
# No session exists, get/create user for new session
user_for_new_session = self.get_or_create_remote_user(remote_user_email)
if ((galaxy_session and galaxy_session.user is None) and user_for_new_session is None):
raise Exception("Remote Authentication Failure - user is unknown and/or not supplied.")
else:
if galaxy_session is not None and galaxy_session.user and galaxy_session.user.external:
# Remote user support is not enabled, but there is an existing
# session with an external user, invalidate
invalidate_existing_session = True
log.warning("User '%s' is an external user with an existing session, invalidating session since external auth is disabled",
galaxy_session.user.email)
elif galaxy_session is not None and galaxy_session.user is not None and galaxy_session.user.deleted:
invalidate_existing_session = True
log.warning("User '%s' is marked deleted, invalidating session" % galaxy_session.user.email)
# Do we need to invalidate the session for some reason?
if invalidate_existing_session:
prev_galaxy_session = galaxy_session
prev_galaxy_session.is_valid = False
galaxy_session = None
# No relevant cookies, or couldn't find, or invalid, so create a new session
if galaxy_session is None:
galaxy_session = self.__create_new_session(prev_galaxy_session, user_for_new_session)
galaxy_session_requires_flush = True
self.galaxy_session = galaxy_session
self.__update_session_cookie(name=session_cookie)
else:
self.galaxy_session = galaxy_session
# Do we need to flush the session?
if galaxy_session_requires_flush:
self.sa_session.add(galaxy_session)
# FIXME: If prev_session is a proper relation this would not
# be needed.
if prev_galaxy_session:
self.sa_session.add(prev_galaxy_session)
self.sa_session.flush()
# If the old session was invalid, get a new (or existing default,
# unused) history with our new session
if invalidate_existing_session:
self.get_or_create_default_history()
def _ensure_logged_in_user(self, environ, session_cookie):
# The value of session_cookie can be one of
# 'galaxysession' or 'galaxycommunitysession'
# Currently this method does nothing unless session_cookie is 'galaxysession'
if session_cookie == 'galaxysession' and self.galaxy_session.user is None:
# TODO: re-engineer to eliminate the use of allowed_paths
# as maintenance overhead is far too high.
allowed_paths = [
# client app route
# TODO: might be better as '/:username/login', '/:username/logout'
url_for(controller='root', action='login'),
# mako app routes
url_for(controller='user', action='login'),
url_for(controller='user', action='logout'),
url_for(controller='user', action='reset_password'),
url_for(controller='user', action='change_password'),
# required to log in w/ openid
url_for(controller='user', action='openid_auth'),
url_for(controller='user', action='openid_process'),
url_for(controller='user', action='openid_associate'),
# TODO: do any of these still need to bypass require login?
url_for(controller='user', action='api_keys'),
url_for(controller='user', action='create'),
url_for(controller='user', action='index'),
url_for(controller='user', action='manage_user_info'),
url_for(controller='user', action='set_default_permissions'),
]
# append the welcome url to allowed paths if we'll show it at the login screen
if self.app.config.show_welcome_with_login:
allowed_paths.append(url_for(controller='root', action='welcome'))
# prevent redirect when UCSC server attempts to get dataset contents as 'anon' user
display_as = url_for(controller='root', action='display_as')
if self.app.datatypes_registry.get_display_sites('ucsc') and self.request.path == display_as:
try:
host = socket.gethostbyaddr(self.environ['REMOTE_ADDR'])[0]
except(socket.error, socket.herror, socket.gaierror, socket.timeout):
host = None
if host in UCSC_SERVERS:
return
# prevent redirect for external, enabled display applications getting dataset contents
external_display_path = url_for(controller='', action='display_application')
if self.request.path.startswith(external_display_path):
request_path_split = self.request.path.split('/')
try:
if (self.app.datatypes_registry.display_applications.get(request_path_split[-5]) and
request_path_split[-4] in self.app.datatypes_registry.display_applications.get(request_path_split[-5]).links and
request_path_split[-3] != 'None'):
return
except IndexError:
pass
# redirect to root if the path is not in the list above
if self.request.path not in allowed_paths:
login_url = url_for(controller='root', action='login', redirect=self.request.path)
self.response.send_redirect(login_url)
def __create_new_session(self, prev_galaxy_session=None, user_for_new_session=None):
"""
Create a new GalaxySession for this request, possibly with a connection
to a previous session (in `prev_galaxy_session`) and an existing user
(in `user_for_new_session`).
Caller is responsible for flushing the returned session.
"""
session_key = self.security.get_new_guid()
galaxy_session = self.app.model.GalaxySession(
session_key=session_key,
is_valid=True,
remote_host=self.request.remote_host,
remote_addr=self.request.remote_addr,
referer=self.request.headers.get('Referer', None))
if prev_galaxy_session:
# Invalidated an existing session for some reason, keep track
galaxy_session.prev_session_id = prev_galaxy_session.id
if user_for_new_session:
# The new session should be associated with the user
galaxy_session.user = user_for_new_session
return galaxy_session
[docs] def get_or_create_remote_user(self, remote_user_email):
"""
Create a remote user with the email remote_user_email and return it
"""
if not self.app.config.use_remote_user:
return None
if getattr(self.app.config, "normalize_remote_user_email", False):
remote_user_email = remote_user_email.lower()
user = self.sa_session.query(self.app.model.User).filter(self.app.model.User.table.c.email == remote_user_email).first()
if user:
# GVK: June 29, 2009 - This is to correct the behavior of a previous bug where a private
# role and default user / history permissions were not set for remote users. When a
# remote user authenticates, we'll look for this information, and if missing, create it.
if not self.app.security_agent.get_private_user_role(user):
self.app.security_agent.create_private_user_role(user)
if 'webapp' not in self.environ or self.environ['webapp'] != 'tool_shed':
if not user.default_permissions:
self.app.security_agent.user_set_default_permissions(user)
self.app.security_agent.user_set_default_permissions(user, history=True, dataset=True)
elif user is None:
username = remote_user_email.split('@', 1)[0].lower()
random.seed()
user = self.app.model.User(email=remote_user_email)
user.set_password_cleartext(''.join(random.sample(string.ascii_letters + string.digits, 12)))
user.external = True
# Replace invalid characters in the username
for char in [x for x in username if x not in string.ascii_lowercase + string.digits + '-']:
username = username.replace(char, '-')
# Find a unique username - user can change it later
if self.sa_session.query(self.app.model.User).filter_by(username=username).first():
i = 1
while self.sa_session.query(self.app.model.User).filter_by(username=(username + '-' + str(i))).first():
i += 1
username += '-' + str(i)
user.username = username
self.sa_session.add(user)
self.sa_session.flush()
self.app.security_agent.create_private_user_role(user)
# We set default user permissions, before we log in and set the default history permissions
if 'webapp' not in self.environ or self.environ['webapp'] != 'tool_shed':
self.app.security_agent.user_set_default_permissions(user)
# self.log_event( "Automatically created account '%s'", user.email )
return user
def __update_session_cookie(self, name='galaxysession'):
"""
Update the session cookie to match the current session.
"""
self.set_cookie(self.security.encode_guid(self.galaxy_session.session_key),
name=name, path=self.app.config.cookie_path)
[docs] def check_user_library_import_dir(self, user):
if getattr(self.app.config, "user_library_import_dir_auto_creation", False):
# try to create a user library import directory
try:
safe_makedirs(os.path.join(self.app.config.user_library_import_dir, user.email))
except ConfigurationError as e:
self.log_event(str(e))
[docs] def user_checks(self, user):
"""
This could contain more checks around a user upon login
"""
self.check_user_library_import_dir(user)
[docs] def handle_user_login(self, user):
"""
Login a new user (possibly newly created)
- do some 'system' checks (if any) for this user
- create a new session
- associate new session with user
- if old session had a history and it was not associated with a user, associate it with the new session,
otherwise associate the current session's history with the user
- add the disk usage of the current session to the user's total disk usage
"""
self.user_checks(user)
# Set the previous session
prev_galaxy_session = self.galaxy_session
prev_galaxy_session.is_valid = False
# Define a new current_session
self.galaxy_session = self.__create_new_session(prev_galaxy_session, user)
if self.webapp.name == 'galaxy':
cookie_name = 'galaxysession'
# Associated the current user's last accessed history (if exists) with their new session
history = None
try:
users_last_session = user.galaxy_sessions[0]
last_accessed = True
except Exception:
users_last_session = None
last_accessed = False
if (prev_galaxy_session.current_history and not
prev_galaxy_session.current_history.deleted and
prev_galaxy_session.current_history.datasets):
if prev_galaxy_session.current_history.user is None or prev_galaxy_session.current_history.user == user:
# If the previous galaxy session had a history, associate it with the new
# session, but only if it didn't belong to a different user.
history = prev_galaxy_session.current_history
if prev_galaxy_session.user is None:
# Increase the user's disk usage by the amount of the previous history's datasets if they didn't already own it.
for hda in history.datasets:
user.adjust_total_disk_usage(hda.quota_amount(user))
elif self.galaxy_session.current_history:
history = self.galaxy_session.current_history
if (not history and users_last_session and
users_last_session.current_history and not
users_last_session.current_history.deleted):
history = users_last_session.current_history
elif not history:
history = self.get_history(create=True, most_recent=True)
if history not in self.galaxy_session.histories:
self.galaxy_session.add_history(history)
if history.user is None:
history.user = user
self.galaxy_session.current_history = history
if not last_accessed:
# Only set default history permissions if current history is not from a previous session
self.app.security_agent.history_set_default_permissions(history, dataset=True, bypass_manage_permission=True)
self.sa_session.add_all((prev_galaxy_session, self.galaxy_session, history))
else:
cookie_name = 'galaxycommunitysession'
self.sa_session.add_all((prev_galaxy_session, self.galaxy_session))
self.sa_session.flush()
# This method is not called from the Galaxy reports, so the cookie will always be galaxysession
self.__update_session_cookie(name=cookie_name)
[docs] def handle_user_logout(self, logout_all=False):
"""
Logout the current user:
- invalidate the current session
- create a new session with no user associated
"""
prev_galaxy_session = self.galaxy_session
prev_galaxy_session.is_valid = False
self.galaxy_session = self.__create_new_session(prev_galaxy_session)
self.sa_session.add_all((prev_galaxy_session, self.galaxy_session))
galaxy_user_id = prev_galaxy_session.user_id
if logout_all and galaxy_user_id is not None:
for other_galaxy_session in (self.sa_session.query(self.app.model.GalaxySession)
.filter(and_(self.app.model.GalaxySession.table.c.user_id == galaxy_user_id,
self.app.model.GalaxySession.table.c.is_valid == true(),
self.app.model.GalaxySession.table.c.id != prev_galaxy_session.id))):
other_galaxy_session.is_valid = False
self.sa_session.add(other_galaxy_session)
self.sa_session.flush()
if self.webapp.name == 'galaxy':
# This method is not called from the Galaxy reports, so the cookie will always be galaxysession
self.__update_session_cookie(name='galaxysession')
elif self.webapp.name == 'tool_shed':
self.__update_session_cookie(name='galaxycommunitysession')
[docs] def get_galaxy_session(self):
"""
Return the current galaxy session
"""
return self.galaxy_session
[docs] def get_history(self, create=False, most_recent=False):
"""
Load the current history.
- If that isn't available, we find the most recently updated history.
- If *that* isn't available, we get or create the default history.
Transactions will not always have an active history (API requests), so
None is a valid response.
"""
history = None
if self.galaxy_session:
if hasattr(self.galaxy_session, 'current_history'):
history = self.galaxy_session.current_history
if not history and most_recent:
history = self.get_most_recent_history()
if not history and util.string_as_bool(create):
history = self.get_or_create_default_history()
return history
[docs] def set_history(self, history):
if history and not history.deleted:
self.galaxy_session.current_history = history
self.sa_session.add(self.galaxy_session)
self.sa_session.flush()
history = property(get_history, set_history)
[docs] def get_or_create_default_history(self):
"""
Gets or creates a default history and associates it with the current
session.
"""
# There must be a user to fetch a default history.
if not self.galaxy_session.user:
return self.new_history()
# Look for default history that (a) has default name + is not deleted and
# (b) has no datasets. If suitable history found, use it; otherwise, create
# new history.
unnamed_histories = self.sa_session.query(self.app.model.History).filter_by(
user=self.galaxy_session.user,
name=self.app.model.History.default_name,
deleted=False)
default_history = None
for history in unnamed_histories:
if len(history.datasets) == 0:
# Found suitable default history.
default_history = history
break
# Set or create hsitory.
if default_history:
history = default_history
self.set_history(history)
else:
history = self.new_history()
return history
[docs] def get_most_recent_history(self):
"""
Gets the most recently updated history.
"""
# There must be a user to fetch histories, and without a user we have
# no recent history.
if not self.galaxy_session.user:
return None
try:
recent_history = self.sa_session.query(self.app.model.History).filter_by(
user=self.galaxy_session.user,
deleted=False).order_by(self.app.model.History.update_time.desc()).first()
except NoResultFound:
return None
self.set_history(recent_history)
return recent_history
[docs] def new_history(self, name=None):
"""
Create a new history and associate it with the current session and
its associated user (if set).
"""
# Create new history
history = self.app.model.History()
if name:
history.name = name
# Associate with session
history.add_galaxy_session(self.galaxy_session)
# Make it the session's current history
self.galaxy_session.current_history = history
# Associate with user
if self.galaxy_session.user:
history.user = self.galaxy_session.user
# Track genome_build with history
history.genome_build = self.app.genome_builds.default_value
# Set the user's default history permissions
self.app.security_agent.history_set_default_permissions(history)
# Save
self.sa_session.add_all((self.galaxy_session, history))
self.sa_session.flush()
return history
@base.lazy_property
def template_context(self):
return dict()
[docs] def set_message(self, message, type=None):
"""
Convenience method for setting the 'message' and 'message_type'
element of the template context.
"""
self.template_context['message'] = message
if type:
self.template_context['status'] = type
[docs] def get_message(self):
"""
Convenience method for getting the 'message' element of the template
context.
"""
return self.template_context['message']
[docs] def show_message(self, message, type='info', refresh_frames=[], cont=None, use_panels=False, active_view=""):
"""
Convenience method for displaying a simple page with a single message.
`type`: one of "error", "warning", "info", or "done"; determines the
type of dialog box and icon displayed with the message
`refresh_frames`: names of frames in the interface that should be
refreshed when the message is displayed
"""
return self.fill_template("message.mako", status=type, message=message, refresh_frames=refresh_frames, cont=cont, use_panels=use_panels, active_view=active_view)
[docs] def show_error_message(self, message, refresh_frames=[], use_panels=False, active_view=""):
"""
Convenience method for displaying an error message. See `show_message`.
"""
return self.show_message(message, 'error', refresh_frames, use_panels=use_panels, active_view=active_view)
[docs] def show_ok_message(self, message, refresh_frames=[], use_panels=False, active_view=""):
"""
Convenience method for displaying an ok message. See `show_message`.
"""
return self.show_message(message, 'done', refresh_frames, use_panels=use_panels, active_view=active_view)
[docs] def show_warn_message(self, message, refresh_frames=[], use_panels=False, active_view=""):
"""
Convenience method for displaying an warn message. See `show_message`.
"""
return self.show_message(message, 'warning', refresh_frames, use_panels=use_panels, active_view=active_view)
@property
def session_csrf_token(self):
token = ''
if self.galaxy_session:
token = self.security.encode_id(
self.galaxy_session.id, kind="csrf"
)
return token
[docs] def check_csrf_token(self):
session_csrf_token = self.request.params.get("session_csrf_token", None)
problem = False
if not session_csrf_token:
log.warning("No session_csrf_token set, denying request.")
problem = True
elif session_csrf_token != self.session_csrf_token:
log.warning("Wrong session token found, denying request.")
problem = True
if problem:
return self.show_warn_message("Failed to authorize action.")
[docs] def fill_template(self, filename, **kwargs):
"""
Fill in a template, putting any keyword arguments on the context.
"""
# call get_user so we can invalidate sessions from external users,
# if external auth has been disabled.
self.get_user()
if filename.endswith(".mako"):
return self.fill_template_mako(filename, **kwargs)
else:
template = Template(file=os.path.join(self.app.config.template_path, filename),
searchList=[kwargs, self.template_context, dict(caller=self, t=self, h=helpers, util=util, request=self.request, response=self.response, app=self.app)])
return str(template)
[docs] def fill_template_mako(self, filename, template_lookup=None, **kwargs):
template_lookup = template_lookup or self.webapp.mako_template_lookup
template = template_lookup.get_template(filename)
template.output_encoding = 'utf-8'
data = dict(caller=self, t=self, trans=self, h=helpers, util=util, request=self.request, response=self.response, app=self.app)
data.update(self.template_context)
data.update(kwargs)
return template.render(**data)
[docs] def stream_template_mako(self, filename, **kwargs):
template = self.webapp.mako_template_lookup.get_template(filename)
template.output_encoding = 'utf-8'
data = dict(caller=self, t=self, trans=self, h=helpers, util=util, request=self.request, response=self.response, app=self.app)
data.update(self.template_context)
data.update(kwargs)
def render(environ, start_response):
response_write = start_response(self.response.wsgi_status(), self.response.wsgi_headeritems())
class StreamBuffer(object):
def write(self, d):
response_write(d.encode('utf-8'))
buffer = StreamBuffer()
context = mako.runtime.Context(buffer, **data)
template.render_context(context)
return []
return render
[docs] def fill_template_string(self, template_string, context=None, **kwargs):
"""
Fill in a template, putting any keyword arguments on the context.
"""
template = Template(source=template_string,
searchList=[context or kwargs, dict(caller=self)])
return str(template)
[docs]def build_native_uwsgi_app(paste_factory, config_section):
"""uwsgi can load paste factories with --ini-paste, but this builds non-paste uwsgi apps.
In particular these are useful with --yaml or --json for config."""
# TODO: just move this to a classmethod on stack?
app_kwds = get_app_kwds(config_section)
uwsgi_app = paste_factory({}, load_app_kwds=app_kwds)
return uwsgi_app
[docs]def build_url_map(app, global_conf, local_conf):
from paste.urlmap import URLMap
from galaxy.web.framework.middleware.static import CacheableStaticURLParser as Static
urlmap = URLMap()
# Merge the global and local configurations
conf = global_conf.copy()
conf.update(local_conf)
# Get cache time in seconds
cache_time = conf.get("static_cache_time", None)
if cache_time is not None:
cache_time = int(cache_time)
# Send to dynamic app by default
urlmap["/"] = app
# Define static mappings from config
urlmap["/static"] = Static(conf.get("static_dir", "./static/"), cache_time)
urlmap["/images"] = Static(conf.get("static_images_dir", "./static/images"), cache_time)
urlmap["/static/scripts"] = Static(conf.get("static_scripts_dir", "./static/scripts/"), cache_time)
urlmap["/static/style"] = Static(conf.get("static_style_dir", "./static/style/blue"), cache_time)
urlmap["/favicon.ico"] = Static(conf.get("static_favicon_dir", "./static/favicon.ico"), cache_time)
urlmap["/robots.txt"] = Static(conf.get("static_robots_txt", "./static/robots.txt"), cache_time)
return urlmap, cache_time