# Mark Huang <mlhuang@cs.princeton.edu>
# Copyright (C) 2006 The Trustees of Princeton University
#
-# $Id: Auth.py,v 1.3 2006/09/25 14:47:32 mlhuang Exp $
+# $Id: Auth.py 5574 2007-10-25 20:33:17Z thierry $
#
import crypt
import sha
import hmac
+import time
from PLC.Faults import *
from PLC.Parameter import Parameter, Mixed
from PLC.Persons import Persons
from PLC.Nodes import Node, Nodes
+from PLC.NodeNetworks import NodeNetwork, NodeNetworks
+from PLC.Sessions import Session, Sessions
+from PLC.Peers import Peer, Peers
+from PLC.Boot import notify_owners
-class Auth(Parameter, dict):
+class Auth(Parameter):
"""
- Base class for all API authentication methods.
+ Base class for all API authentication methods, as well as a class
+ that can be used to represent all supported API authentication
+ methods.
"""
- def __init__(self, auth):
+ def __init__(self, auth = None):
+ if auth is None:
+ auth = {'AuthMethod': Parameter(str, "Authentication method to use", optional = False)}
Parameter.__init__(self, auth, "API authentication structure")
- dict.__init__(auth)
+
+ def check(self, method, auth, *args):
+ # Method.type_check() should have checked that all of the
+ # mandatory fields were present.
+ assert 'AuthMethod' in auth
+
+ if auth['AuthMethod'] == "session":
+ expected = SessionAuth()
+ elif auth['AuthMethod'] == "password" or \
+ auth['AuthMethod'] == "capability":
+ expected = PasswordAuth()
+ elif auth['AuthMethod'] == "gpg":
+ expected = GPGAuth()
+ elif auth['AuthMethod'] == "hmac":
+ expected = BootAuth()
+ elif auth['AuthMethod'] == "anonymous":
+ expected = AnonymousAuth()
+ else:
+ raise PLCInvalidArgument("must be 'session', 'password', 'gpg', 'hmac', or 'anonymous'", "AuthMethod")
+
+ # Re-check using the specified authentication method
+ method.type_check("auth", auth, expected, (auth,) + args)
+
+class GPGAuth(Auth):
+ """
+ Proposed PlanetLab federation authentication structure.
+ """
+
+ def __init__(self):
+ Auth.__init__(self, {
+ 'AuthMethod': Parameter(str, "Authentication method to use, always 'gpg'", optional = False),
+ 'name': Parameter(str, "Peer or user name", optional = False),
+ 'signature': Parameter(str, "Message signature", optional = False)
+ })
+
+ def check(self, method, auth, *args):
+ try:
+ peers = Peers(method.api, [auth['name']])
+ if peers:
+ if 'peer' not in method.roles:
+ raise PLCAuthenticationFailure, "Not allowed to call method"
+
+ method.caller = peer = peers[0]
+ keys = [peer['key']]
+ else:
+ persons = Persons(method.api, {'email': auth['name'], 'enabled': True, 'peer_id': None})
+ if not persons:
+ raise PLCAuthenticationFailure, "No such user '%s'" % auth['name']
+
+ if not set(person['roles']).intersection(method.roles):
+ raise PLCAuthenticationFailure, "Not allowed to call method"
+
+ method.caller = person = persons[0]
+ keys = Keys(method.api, {'key_id': person['key_ids'], 'key_type': "gpg", 'peer_id': None})
+
+ if not keys:
+ raise PLCAuthenticationFailure, "No GPG key on record for peer or user '%s'"
+
+ for key in keys:
+ try:
+ from PLC.GPG import gpg_verify
+ gpg_verify(args, key, auth['signature'], method.name)
+ return
+ except PLCAuthenticationFailure, fault:
+ pass
+
+ raise fault
+
+ except PLCAuthenticationFailure, fault:
+ # XXX Send e-mail
+ raise fault
+
+class SessionAuth(Auth):
+ """
+ Secondary authentication method. After authenticating with a
+ primary authentication method, call GetSession() to generate a
+ session key that may be used for subsequent calls.
+ """
+
+ def __init__(self):
+ Auth.__init__(self, {
+ 'AuthMethod': Parameter(str, "Authentication method to use, always 'session'", optional = False),
+ 'session': Parameter(str, "Session key", optional = False)
+ })
+
+ def check(self, method, auth, *args):
+ # Method.type_check() should have checked that all of the
+ # mandatory fields were present.
+ assert auth.has_key('session')
+
+ # Get session record
+ sessions = Sessions(method.api, [auth['session']], expires = None)
+ if not sessions:
+ raise PLCAuthenticationFailure, "No such session"
+ session = sessions[0]
+
+ try:
+ if session['node_id'] is not None:
+ nodes = Nodes(method.api, {'node_id': session['node_id'], 'peer_id': None})
+ if not nodes:
+ raise PLCAuthenticationFailure, "No such node"
+ node = nodes[0]
+
+ if 'node' not in method.roles:
+ raise PLCAuthenticationFailure, "Not allowed to call method"
+
+ method.caller = node
+
+ elif session['person_id'] is not None and session['expires'] > time.time():
+ persons = Persons(method.api, {'person_id': session['person_id'], 'enabled': True, 'peer_id': None})
+ if not persons:
+ raise PLCAuthenticationFailure, "No such account"
+ person = persons[0]
+
+ if not set(person['roles']).intersection(method.roles):
+ raise PLCPermissionDenied, "Not allowed to call method"
+
+ method.caller = persons[0]
+
+ else:
+ raise PLCAuthenticationFailure, "Invalid session"
+
+ except PLCAuthenticationFailure, fault:
+ session.delete()
+ raise fault
class BootAuth(Auth):
"""
# mandatory fields were present.
assert auth.has_key('node_id')
+ if 'node' not in method.roles:
+ raise PLCAuthenticationFailure, "Not allowed to call method"
+
try:
- nodes = Nodes(method.api, [auth['node_id']]).values()
+ nodes = Nodes(method.api, {'node_id': auth['node_id'], 'peer_id': None})
if not nodes:
raise PLCAuthenticationFailure, "No such node"
node = nodes[0]
nodenetwork = None
if node['nodenetwork_ids']:
- nodenetworks = NodeNetworks(method.api, node['nodenetwork_ids']).values()
+ nodenetworks = NodeNetworks(method.api, node['nodenetwork_ids'])
for nodenetwork in nodenetworks:
if nodenetwork['is_primary']:
break
raise PLCAuthenticationFailure, "Cannot determine IP address of requestor"
if nodenetwork['ip'] != method.source[0]:
- raise PLCAuthenticationFailure, "Requestor IP %s does not mach node IP %s" % \
+ raise PLCAuthenticationFailure, "Requestor IP %s does not match node IP %s" % \
(method.source[0], nodenetwork['ip'])
else:
raise PLCAuthenticationFailure, "No node key or boot nonce"
method.caller = node
except PLCAuthenticationFailure, fault:
- # XXX Send e-mail
+ if nodes:
+ notify_owners(method, node, 'authfail', include_pis = True, include_techs = True, fault = fault)
raise fault
class AnonymousAuth(Auth):
})
def check(self, method, auth, *args):
- # Sure, dude, whatever
- return True
+ if 'anonymous' not in method.roles:
+ raise PLCAuthenticationFailure, "Not allowed to call method anonymously"
+
+ method.caller = None
class PasswordAuth(Auth):
"""
def __init__(self):
Auth.__init__(self, {
- 'AuthMethod': Parameter(str, "Authentication method to use, typically 'password'", optional = False),
+ 'AuthMethod': Parameter(str, "Authentication method to use, always 'password' or 'capability'", optional = False),
'Username': Parameter(str, "PlanetLab username, typically an e-mail address", optional = False),
'AuthString': Parameter(str, "Authentication string, typically a password", optional = False),
})
assert auth.has_key('Username')
# Get record (must be enabled)
- persons = Persons(method.api, [auth['Username']], enabled = True)
+ persons = Persons(method.api, {'email': auth['Username'].lower(), 'enabled': True, 'peer_id': None})
if len(persons) != 1:
raise PLCAuthenticationFailure, "No such account"
- person = persons.values()[0]
+ person = persons[0]
if auth['Username'] == method.api.config.PLC_API_MAINTENANCE_USER:
# "Capability" authentication, whatever the hell that was
raise PLCAuthenticationFailure, "Password verification failed"
if not set(person['roles']).intersection(method.roles):
- raise PLCAuthenticationFailure, "Not allowed to call method"
+ raise PLCAuthenticationFailure, "Not allowed to call method"
method.caller = person
git://git.onelab.eu / plcapi.git / blobdiff