def __init__ (self, encoding="utf-8", methods='sfa.methods',
config = "/etc/sfa/sfa_config",
peer_cert = None, interface = None,
key_file = None, cert_file = None, cache = None):
XmlrpcApi.__init__ (self, encoding)
# we may be just be documenting the API
if config is None:
return
# Load configuration
self.config = Config(config)
self.credential = None
self.auth = Auth(peer_cert)
self.interface = interface
self.hrn = self.config.SFA_INTERFACE_HRN
self.key_file = key_file
self.key = Keypair(filename=self.key_file)
self.cert_file = cert_file
self.cert = Certificate(filename=self.cert_file)
self.cache = cache
if self.cache is None:
self.cache = Cache()
# load registries
from sfa.server.registry import Registries
self.registries = Registries()
# load aggregates
from sfa.server.aggregate import Aggregates
self.aggregates = Aggregates()
# filled later on by generic/Generic
self.manager=None
self._dbsession=None
def __init__(self, api):
Driver.__init__(self, api)
config = api.config
self.shell = Shell(config=config)
self.cache = None
if config.SFA_AGGREGATE_CACHING:
if NovaDriver.cache is None:
NovaDriver.cache = Cache()
self.cache = NovaDriver.cache
def __init__(self,
encoding="utf-8",
methods='sfa.methods',
config="/etc/sfa/sfa_config",
peer_cert=None,
interface=None,
key_file=None,
cert_file=None,
cache=None):
XmlrpcApi.__init__(self, encoding)
# we may be just be documenting the API
if config is None:
return
# Load configuration
self.config = Config(config)
self.credential = None
self.auth = Auth(peer_cert)
self.interface = interface
self.hrn = self.config.SFA_INTERFACE_HRN
self.key_file = key_file
self.key = Keypair(filename=self.key_file)
self.cert_file = cert_file
self.cert = Certificate(filename=self.cert_file)
self.cache = cache
if self.cache is None:
self.cache = Cache()
# load registries
from sfa.server.registry import Registries
self.registries = Registries()
# load aggregates
from sfa.server.aggregate import Aggregates
self.aggregates = Aggregates()
# filled later on by generic/Generic
self.manager = None
self._dbsession = None
def __init__(self,
server_address,
HandlerClass,
key_file,
cert_file,
logRequests=True):
"""Secure XML-RPC server.
It it very similar to SimpleXMLRPCServer but it uses HTTPS for transporting XML data.
"""
logger.debug(
"SecureXMLRPCServer.__init__, server_address=%s, cert_file=%s, key_file=%s"
% (server_address, cert_file, key_file))
logger.debug("SecureXMLRPCServer HandlerClass=%s" % (HandlerClass))
self.logRequests = logRequests
self.interface = None
self.key_file = key_file
self.cert_file = cert_file
self.method_map = {}
# add cache to the request handler
HandlerClass.cache = Cache()
#for compatibility with python 2.4 (centos53)
if sys.version_info < (2, 5):
SimpleXMLRPCServer.SimpleXMLRPCDispatcher.__init__(self)
else:
SimpleXMLRPCServer.SimpleXMLRPCDispatcher.__init__(
self, True, None)
SocketServer.BaseServer.__init__(self, server_address, HandlerClass)
ctx = SSL.Context(SSL.SSLv23_METHOD)
ctx.use_privatekey_file(key_file)
ctx.use_certificate_file(cert_file)
# If you wanted to verify certs against known CAs.. this is how you would do it
#ctx.load_verify_locations('/etc/sfa/trusted_roots/plc.gpo.gid')
config = Config()
trusted_cert_files = TrustedRoots(
config.get_trustedroots_dir()).get_file_list()
for cert_file in trusted_cert_files:
ctx.load_verify_locations(cert_file)
ctx.set_verify(SSL.VERIFY_PEER | SSL.VERIFY_FAIL_IF_NO_PEER_CERT,
verify_callback)
ctx.set_verify_depth(5)
ctx.set_app_data(self)
self.socket = SSL.Connection(
ctx, socket.socket(self.address_family, self.socket_type))
self.server_bind()
self.server_activate()
def __init__(self, api):
config = api.config
flavour = config.SFA_GENERIC_FLAVOUR
# to be cleaned
if flavour == "nitos":
from sfa.nitos.nitosdriver import NitosDriver
self.driver = NitosDriver(api)
elif flavour == "fd":
from sfa.federica.fddriver import FdDriver
self.driver = FdDriver(api)
else:
logger.error(
"V2ToV3Adapter: Unknown Flavour !!!\n Supported Flavours: nitos, fd"
)
# Caching
if config.SFA_AGGREGATE_CACHING:
if self.driver.cache:
self.cache = self.driver.cache
else:
self.cache = Cache()
def get_cached_server_version(self, server):
# check local cache first
cache = None
version = None
cache_file = os.path.join(self.options.sfi_dir,'sfi_cache.dat')
cache_key = server.url + "-version"
try:
cache = Cache(cache_file)
except IOError:
cache = Cache()
self.logger.info("Local cache not found at: %s" % cache_file)
if cache:
version = cache.get(cache_key)
if not version:
version = server.GetVersion()
# cache version for 24 hours
cache.add(cache_key, version, ttl= 60*60*24)
self.logger.info("Updating cache file %s" % cache_file)
cache.save_to_file(cache_file)
return version
class SfaApi (XmlrpcApi):
"""
An SfaApi instance is a basic xmlrcp service
augmented with the local cryptographic material and hrn
It also has the notion of its own interface (a string describing
whether we run a registry, aggregate or slicemgr) and has
the notion of neighbour sfa services as defined
in /etc/sfa/{aggregates,registries}.xml
Finally it contains a cache instance
It gets augmented by the generic layer with
(*) an instance of manager (actually a manager module for now)
beware that this is shared among all instances of api
(*) an instance of a testbed driver
"""
def __init__ (self, encoding="utf-8", methods='sfa.methods',
config = "/etc/sfa/sfa_config",
peer_cert = None, interface = None,
key_file = None, cert_file = None, cache = None):
XmlrpcApi.__init__ (self, encoding)
# we may be just be documenting the API
if config is None:
return
# Load configuration
self.config = Config(config)
self.credential = None
self.auth = Auth(peer_cert)
self.interface = interface
self.hrn = self.config.SFA_INTERFACE_HRN
self.key_file = key_file
self.key = Keypair(filename=self.key_file)
self.cert_file = cert_file
self.cert = Certificate(filename=self.cert_file)
self.cache = cache
if self.cache is None:
self.cache = Cache()
# load registries
from sfa.server.registry import Registries
self.registries = Registries()
# load aggregates
from sfa.server.aggregate import Aggregates
self.aggregates = Aggregates()
# filled later on by generic/Generic
self.manager=None
self._dbsession=None
def server_proxy(self, interface, cred, timeout=30):
"""
Returns a connection to the specified interface. Use the specified
credential to determine the caller and look for the caller's key/cert
in the registry hierarchy cache.
"""
from sfa.trust.hierarchy import Hierarchy
if not isinstance(cred, Credential):
cred_obj = Credential(string=cred)
else:
cred_obj = cred
caller_gid = cred_obj.get_gid_caller()
hierarchy = Hierarchy()
auth_info = hierarchy.get_auth_info(caller_gid.get_hrn())
key_file = auth_info.get_privkey_filename()
cert_file = auth_info.get_gid_filename()
server = interface.server_proxy(key_file, cert_file, timeout)
return server
def dbsession(self):
if self._dbsession is None:
self._dbsession=alchemy.session()
return self._dbsession
def close_dbsession(self):
if self._dbsession is None: return
alchemy.close_session(self._dbsession)
self._dbsession=None
def getCredential(self, minimumExpiration=0):
"""
Return a valid credential for this interface.
"""
type = 'authority'
path = self.config.SFA_DATA_DIR
filename = ".".join([self.interface, self.hrn, type, "cred"])
cred_filename = os.path.join(path,filename)
cred = None
if os.path.isfile(cred_filename):
cred = Credential(filename = cred_filename)
# make sure cred isnt expired
if not cred.get_expiration or \
datetime.datetime.utcnow() + datetime.timedelta(seconds=minimumExpiration) < cred.get_expiration():
return cred.save_to_string(save_parents=True)
# get a new credential
if self.interface in ['registry']:
cred = self._getCredentialRaw()
else:
cred = self._getCredential()
cred.save_to_file(cred_filename, save_parents=True)
return cred.save_to_string(save_parents=True)
def getDelegatedCredential(self, creds):
"""
Attempt to find a credential delegated to us in
the specified list of creds.
"""
from sfa.trust.hierarchy import Hierarchy
if creds and not isinstance(creds, list):
creds = [creds]
hierarchy = Hierarchy()
delegated_cred = None
for cred in creds:
if hierarchy.auth_exists(Credential(cred=cred).get_gid_caller().get_hrn()):
delegated_cred = cred
break
return delegated_cred
def _getCredential(self):
"""
Get our credential from a remote registry
"""
from sfa.server.registry import Registries
registries = Registries()
registry = registries.server_proxy(self.hrn, self.key_file, self.cert_file)
cert_string=self.cert.save_to_string(save_parents=True)
# get self credential
self_cred = registry.GetSelfCredential(cert_string, self.hrn, 'authority')
# get credential
cred = registry.GetCredential(self_cred, self.hrn, 'authority')
return Credential(string=cred)
def _getCredentialRaw(self):
"""
Get our current credential directly from the local registry.
"""
hrn = self.hrn
auth_hrn = self.auth.get_authority(hrn)
# is this a root or sub authority
if not auth_hrn or hrn == self.config.SFA_INTERFACE_HRN:
auth_hrn = hrn
auth_info = self.auth.get_auth_info(auth_hrn)
# xxx although unlikely we might want to check for a potential leak
dbsession=self.dbsession()
from sfa.storage.model import RegRecord
record = dbsession.query(RegRecord).filter_by(type='authority+sa', hrn=hrn).first()
if not record:
raise RecordNotFound(hrn)
type = record.type
object_gid = record.get_gid_object()
new_cred = Credential(subject = object_gid.get_subject())
new_cred.set_gid_caller(object_gid)
new_cred.set_gid_object(object_gid)
new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
r1 = determine_rights(type, hrn)
new_cred.set_privileges(r1)
new_cred.encode()
new_cred.sign()
return new_cred
def loadCredential (self):
"""
Attempt to load credential from file if it exists. If it doesnt get
credential from registry.
"""
# see if this file exists
# XX This is really the aggregate's credential. Using this is easier than getting
# the registry's credential from iteslf (ssl errors).
filename = self.interface + self.hrn + ".ma.cred"
ma_cred_path = os.path.join(self.config.SFA_DATA_DIR,filename)
try:
self.credential = Credential(filename = ma_cred_path)
except IOError:
self.credential = self.getCredentialFromRegistry()
def get_cached_server_version(self, server):
cache_key = server.url + "-version"
server_version = None
if self.cache:
server_version = self.cache.get(cache_key)
if not server_version:
result = server.GetVersion()
server_version = ReturnValue.get_value(result)
# cache version for 24 hours
self.cache.add(cache_key, server_version, ttl= 60*60*24)
return server_version
def get_geni_code(self, result):
code = {
'geni_code': GENICODE.SUCCESS,
'am_type': 'sfa',
'am_code': None,
}
if isinstance(result, SfaFault):
code['geni_code'] = result.faultCode
code['am_code'] = result.faultCode
return code
def get_geni_value(self, result):
value = result
if isinstance(result, SfaFault):
value = ""
return value
def get_geni_output(self, result):
output = ""
if isinstance(result, SfaFault):
output = result.faultString
return output
def prepare_response_am(self, result):
version = version_core()
response = {
'geni_api': 3,
'code': self.get_geni_code(result),
'value': self.get_geni_value(result),
'output': self.get_geni_output(result),
}
return response
def prepare_response(self, result, method=""):
"""
Converts the specified result into a standard GENI compliant
response
"""
# as of dec 13 2011 we only support API v2
if self.interface.lower() in ['aggregate', 'slicemgr']:
result = self.prepare_response_am(result)
return XmlrpcApi.prepare_response(self, result, method)
def __init__ (self, config):
self.cache=None
if config.SFA_SM_CACHING:
if SliceManager.cache is None:
SliceManager.cache = Cache()
self.cache = SliceManager.cache
class SfaApi(XmlrpcApi):
"""
An SfaApi instance is a basic xmlrcp service
augmented with the local cryptographic material and hrn
It also has the notion of its own interface (a string describing
whether we run a registry, aggregate or slicemgr) and has
the notion of neighbour sfa services as defined
in /etc/sfa/{aggregates,registries}.xml
Finally it contains a cache instance
It gets augmented by the generic layer with
(*) an instance of manager (actually a manager module for now)
beware that this is shared among all instances of api
(*) an instance of a testbed driver
"""
def __init__(self,
encoding="utf-8",
methods='sfa.methods',
config="/etc/sfa/sfa_config",
peer_cert=None,
interface=None,
key_file=None,
cert_file=None,
cache=None):
XmlrpcApi.__init__(self, encoding)
# we may be just be documenting the API
if config is None:
return
# Load configuration
self.config = Config(config)
self.credential = None
self.auth = Auth(peer_cert)
self.interface = interface
self.hrn = self.config.SFA_INTERFACE_HRN
self.key_file = key_file
self.key = Keypair(filename=self.key_file)
self.cert_file = cert_file
self.cert = Certificate(filename=self.cert_file)
self.cache = cache
if self.cache is None:
self.cache = Cache()
# load registries
from sfa.server.registry import Registries
self.registries = Registries()
# load aggregates
from sfa.server.aggregate import Aggregates
self.aggregates = Aggregates()
# filled later on by generic/Generic
self.manager = None
self._dbsession = None
def server_proxy(self, interface, cred, timeout=30):
"""
Returns a connection to the specified interface. Use the specified
credential to determine the caller and look for the caller's key/cert
in the registry hierarchy cache.
"""
from sfa.trust.hierarchy import Hierarchy
if not isinstance(cred, Credential):
cred_obj = Credential(string=cred)
else:
cred_obj = cred
caller_gid = cred_obj.get_gid_caller()
hierarchy = Hierarchy()
auth_info = hierarchy.get_auth_info(caller_gid.get_hrn())
key_file = auth_info.get_privkey_filename()
cert_file = auth_info.get_gid_filename()
server = interface.server_proxy(key_file, cert_file, timeout)
return server
def dbsession(self):
if self._dbsession is None:
self._dbsession = alchemy.session()
return self._dbsession
def close_dbsession(self):
if self._dbsession is None: return
alchemy.close_session(self._dbsession)
self._dbsession = None
def getCredential(self, minimumExpiration=0):
"""
Return a valid credential for this interface.
"""
type = 'authority'
path = self.config.SFA_DATA_DIR
filename = ".".join([self.interface, self.hrn, type, "cred"])
cred_filename = os.path.join(path, filename)
cred = None
if os.path.isfile(cred_filename):
cred = Credential(filename=cred_filename)
# make sure cred isnt expired
if not cred.get_expiration or \
datetime.datetime.utcnow() + datetime.timedelta(seconds=minimumExpiration) < cred.get_expiration():
return cred.save_to_string(save_parents=True)
# get a new credential
if self.interface in ['registry']:
cred = self._getCredentialRaw()
else:
cred = self._getCredential()
cred.save_to_file(cred_filename, save_parents=True)
return cred.save_to_string(save_parents=True)
def getDelegatedCredential(self, creds):
"""
Attempt to find a credential delegated to us in
the specified list of creds.
"""
from sfa.trust.hierarchy import Hierarchy
if creds and not isinstance(creds, list):
creds = [creds]
hierarchy = Hierarchy()
delegated_cred = None
for cred in creds:
if hierarchy.auth_exists(
Credential(cred=cred).get_gid_caller().get_hrn()):
delegated_cred = cred
break
return delegated_cred
def _getCredential(self):
"""
Get our credential from a remote registry
"""
from sfa.server.registry import Registries
registries = Registries()
registry = registries.server_proxy(self.hrn, self.key_file,
self.cert_file)
cert_string = self.cert.save_to_string(save_parents=True)
# get self credential
self_cred = registry.GetSelfCredential(cert_string, self.hrn,
'authority')
# get credential
cred = registry.GetCredential(self_cred, self.hrn, 'authority')
return Credential(string=cred)
def _getCredentialRaw(self):
"""
Get our current credential directly from the local registry.
"""
hrn = self.hrn
auth_hrn = self.auth.get_authority(hrn)
# is this a root or sub authority
if not auth_hrn or hrn == self.config.SFA_INTERFACE_HRN:
auth_hrn = hrn
auth_info = self.auth.get_auth_info(auth_hrn)
# xxx although unlikely we might want to check for a potential leak
dbsession = self.dbsession()
from sfa.storage.model import RegRecord
record = dbsession.query(RegRecord).filter_by(type='authority+sa',
hrn=hrn).first()
if not record:
raise RecordNotFound(hrn)
type = record.type
object_gid = record.get_gid_object()
new_cred = Credential(subject=object_gid.get_subject())
new_cred.set_gid_caller(object_gid)
new_cred.set_gid_object(object_gid)
new_cred.set_issuer_keys(auth_info.get_privkey_filename(),
auth_info.get_gid_filename())
r1 = determine_rights(type, hrn)
new_cred.set_privileges(r1)
new_cred.encode()
new_cred.sign()
return new_cred
def loadCredential(self):
"""
Attempt to load credential from file if it exists. If it doesnt get
credential from registry.
"""
# see if this file exists
# XX This is really the aggregate's credential. Using this is easier than getting
# the registry's credential from iteslf (ssl errors).
filename = self.interface + self.hrn + ".ma.cred"
ma_cred_path = os.path.join(self.config.SFA_DATA_DIR, filename)
try:
self.credential = Credential(filename=ma_cred_path)
except IOError:
self.credential = self.getCredentialFromRegistry()
def get_cached_server_version(self, server):
cache_key = server.url + "-version"
server_version = None
if self.cache:
server_version = self.cache.get(cache_key)
if not server_version:
result = server.GetVersion()
server_version = ReturnValue.get_value(result)
# cache version for 24 hours
self.cache.add(cache_key, server_version, ttl=60 * 60 * 24)
return server_version
def get_geni_code(self, result):
code = {
'geni_code': GENICODE.SUCCESS,
'am_type': 'sfa',
'am_code': None,
}
if isinstance(result, SfaFault):
code['geni_code'] = result.faultCode
code['am_code'] = result.faultCode
return code
def get_geni_value(self, result):
value = result
if isinstance(result, SfaFault):
value = ""
return value
def get_geni_output(self, result):
output = ""
if isinstance(result, SfaFault):
output = result.faultString
return output
def prepare_response_am(self, result):
version = version_core()
response = {
'geni_api': 3,
'code': self.get_geni_code(result),
'value': self.get_geni_value(result),
'output': self.get_geni_output(result),
}
return response
def prepare_response(self, result, method=""):
"""
Converts the specified result into a standard GENI compliant
response
"""
# as of dec 13 2011 we only support API v2
if self.interface.lower() in ['aggregate', 'slicemgr']:
result = self.prepare_response_am(result)
return XmlrpcApi.prepare_response(self, result, method)