-#----------------------------------------------------------------------
-# Copyright (c) 2008 Board of Trustees, Princeton University
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and/or hardware specification (the "Work") to
-# deal in the Work without restriction, including without limitation the
-# rights to use, copy, modify, merge, publish, distribute, sublicense,
-# and/or sell copies of the Work, and to permit persons to whom the Work
-# 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 Work.
-#
-# THE WORK 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 WORK OR THE USE OR OTHER DEALINGS
-# IN THE WORK.
-#----------------------------------------------------------------------
-##
-# Implements SFA GID. GIDs are based on certificates, and the GID class is a
-# descendant of the certificate class.
-##
-
-import xmlrpclib
-import uuid
-
-from sfa.trust.certificate import Certificate
-
-from sfa.util.faults import GidInvalidParentHrn, GidParentHrn
-from sfa.util.sfalogging import logger
-from sfa.util.xrn import hrn_to_urn, urn_to_hrn, hrn_authfor_hrn
-
-##
-# Create a new uuid. Returns the UUID as a string.
-
-def create_uuid():
- return str(uuid.uuid4().int)
-
-##
-# GID is a tuple:
-# (uuid, urn, public_key)
-#
-# UUID is a unique identifier and is created by the python uuid module
-# (or the utility function create_uuid() in gid.py).
-#
-# HRN is a human readable name. It is a dotted form similar to a backward domain
-# name. For example, planetlab.us.arizona.bakers.
-#
-# URN is a human readable identifier of form:
-# "urn:publicid:IDN+toplevelauthority[:sub-auth.]*[\res. type]\ +object name"
-# For example, urn:publicid:IDN+planetlab:us:arizona+user+bakers
-#
-# PUBLIC_KEY is the public key of the principal identified by the UUID/HRN.
-# It is a Keypair object as defined in the cert.py module.
-#
-# It is expected that there is a one-to-one pairing between UUIDs and HRN,
-# but it is uncertain how this would be inforced or if it needs to be enforced.
-#
-# These fields are encoded using xmlrpc into the subjectAltName field of the
-# x509 certificate. Note: Call encode() once the fields have been filled in
-# to perform this encoding.
-
-
-class GID(Certificate):
- uuid = None
- hrn = None
- urn = None
-
- ##
- # Create a new GID object
- #
- # @param create If true, create the X509 certificate
- # @param subject If subject!=None, create the X509 cert and set the subject name
- # @param string If string!=None, load the GID from a string
- # @param filename If filename!=None, load the GID from a file
- # @param lifeDays life of GID in days - default is 1825==5 years
-
- def __init__(self, create=False, subject=None, string=None, filename=None, uuid=None, hrn=None, urn=None, lifeDays=1825):
-
- Certificate.__init__(self, lifeDays, create, subject, string, filename)
- if subject:
- logger.debug("Creating GID for subject: %s" % subject)
- if uuid:
- self.uuid = int(uuid)
- if hrn:
- self.hrn = hrn
- self.urn = hrn_to_urn(hrn, 'unknown')
- if urn:
- self.urn = urn
- self.hrn, type = urn_to_hrn(urn)
-
- def set_uuid(self, uuid):
- if isinstance(uuid, str):
- self.uuid = int(uuid)
- else:
- self.uuid = uuid
-
- def get_uuid(self):
- if not self.uuid:
- self.decode()
- return self.uuid
-
- def set_hrn(self, hrn):
- self.hrn = hrn
-
- def get_hrn(self):
- if not self.hrn:
- self.decode()
- return self.hrn
-
- def set_urn(self, urn):
- self.urn = urn
- self.hrn, type = urn_to_hrn(urn)
-
- def get_urn(self):
- if not self.urn:
- self.decode()
- return self.urn
-
- def get_type(self):
- if not self.urn:
- self.decode()
- _, t = urn_to_hrn(self.urn)
- return t
-
- ##
- # Encode the GID fields and package them into the subject-alt-name field
- # of the X509 certificate. This must be called prior to signing the
- # certificate. It may only be called once per certificate.
-
- def encode(self):
- if self.urn:
- urn = self.urn
- else:
- urn = hrn_to_urn(self.hrn, None)
-
- str = "URI:" + urn
-
- if self.uuid:
- str += ", " + "URI:" + uuid.UUID(int=self.uuid).urn
-
- self.set_data(str, 'subjectAltName')
-
-
-
-
- ##
- # Decode the subject-alt-name field of the X509 certificate into the
- # fields of the GID. This is automatically called by the various get_*()
- # functions in this class.
-
- def decode(self):
- data = self.get_data('subjectAltName')
- dict = {}
- if data:
- if data.lower().startswith('uri:http://<params>'):
- dict = xmlrpclib.loads(data[11:])[0][0]
- else:
- spl = data.split(', ')
- for val in spl:
- if val.lower().startswith('uri:urn:uuid:'):
- dict['uuid'] = uuid.UUID(val[4:]).int
- elif val.lower().startswith('uri:urn:publicid:idn+'):
- dict['urn'] = val[4:]
-
- self.uuid = dict.get("uuid", None)
- self.urn = dict.get("urn", None)
- self.hrn = dict.get("hrn", None)
- if self.urn:
- self.hrn = urn_to_hrn(self.urn)[0]
-
- ##
- # Dump the credential to stdout.
- #
- # @param indent specifies a number of spaces to indent the output
- # @param dump_parents If true, also dump the parents of the GID
-
- def dump(self, *args, **kwargs):
- print self.dump_string(*args,**kwargs)
-
- def dump_string(self, indent=0, dump_parents=False):
- result=" "*(indent-2) + "GID\n"
- result += " "*indent + "hrn:" + str(self.get_hrn()) +"\n"
- result += " "*indent + "urn:" + str(self.get_urn()) +"\n"
- result += " "*indent + "uuid:" + str(self.get_uuid()) + "\n"
- filename=self.get_filename()
- if filename: result += "Filename %s\n"%filename
-
- if self.parent and dump_parents:
- result += " "*indent + "parent:\n"
- result += self.parent.dump_string(indent+4, dump_parents)
- return result
-
- ##
- # Verify the chain of authenticity of the GID. First perform the checks
- # of the certificate class (verifying that each parent signs the child,
- # etc). In addition, GIDs also confirm that the parent's HRN is a prefix
- # of the child's HRN, and the parent is of type 'authority'.
- #
- # Verifying these prefixes prevents a rogue authority from signing a GID
- # for a principal that is not a member of that authority. For example,
- # planetlab.us.arizona cannot sign a GID for planetlab.us.princeton.foo.
-
- def verify_chain(self, trusted_certs = None):
- # do the normal certificate verification stuff
- trusted_root = Certificate.verify_chain(self, trusted_certs)
-
- if self.parent:
- # make sure the parent's hrn is a prefix of the child's hrn
- if not hrn_authfor_hrn(self.parent.get_hrn(), self.get_hrn()):
- raise GidParentHrn("This cert HRN %s isn't in the namespace for parent HRN %s" % (self.get_hrn(), self.parent.get_hrn()))
-
- # Parent must also be an authority (of some type) to sign a GID
- # There are multiple types of authority - accept them all here
- if not self.parent.get_type().find('authority') == 0:
- raise GidInvalidParentHrn("This cert %s's parent %s is not an authority (is a %s)" % (self.get_hrn(), self.parent.get_hrn(), self.parent.get_type()))
-
- # Then recurse up the chain - ensure the parent is a trusted
- # root or is in the namespace of a trusted root
- self.parent.verify_chain(trusted_certs)
- else:
- # make sure that the trusted root's hrn is a prefix of the child's
- trusted_gid = GID(string=trusted_root.save_to_string())
- trusted_type = trusted_gid.get_type()
- trusted_hrn = trusted_gid.get_hrn()
- #if trusted_type == 'authority':
- # trusted_hrn = trusted_hrn[:trusted_hrn.rindex('.')]
- cur_hrn = self.get_hrn()
- if not hrn_authfor_hrn(trusted_hrn, cur_hrn):
- raise GidParentHrn("Trusted root with HRN %s isn't a namespace authority for this cert %s" % (trusted_hrn, cur_hrn))
-
- # There are multiple types of authority - accept them all here
- if not trusted_type.find('authority') == 0:
- raise GidInvalidParentHrn("This cert %s's trusted root signer %s is not an authority (is a %s)" % (self.get_hrn(), trusted_hrn, trusted_type))
-
- return
+#----------------------------------------------------------------------\r
+# Copyright (c) 2008 Board of Trustees, Princeton University\r
+#\r
+# Permission is hereby granted, free of charge, to any person obtaining\r
+# a copy of this software and/or hardware specification (the "Work") to\r
+# deal in the Work without restriction, including without limitation the\r
+# rights to use, copy, modify, merge, publish, distribute, sublicense,\r
+# and/or sell copies of the Work, and to permit persons to whom the Work\r
+# is furnished to do so, subject to the following conditions:\r
+#\r
+# The above copyright notice and this permission notice shall be\r
+# included in all copies or substantial portions of the Work.\r
+#\r
+# THE WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS \r
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF \r
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND \r
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT \r
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, \r
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, \r
+# OUT OF OR IN CONNECTION WITH THE WORK OR THE USE OR OTHER DEALINGS \r
+# IN THE WORK.\r
+#----------------------------------------------------------------------\r
+##\r
+# Implements SFA GID. GIDs are based on certificates, and the GID class is a\r
+# descendant of the certificate class.\r
+##\r
+\r
+import xmlrpclib\r
+import uuid\r
+\r
+from sfa.trust.certificate import Certificate\r
+\r
+from sfa.util.faults import GidInvalidParentHrn, GidParentHrn\r
+from sfa.util.sfalogging import logger\r
+from sfa.util.xrn import hrn_to_urn, urn_to_hrn, hrn_authfor_hrn\r
+\r
+##\r
+# Create a new uuid. Returns the UUID as a string.\r
+\r
+def create_uuid():\r
+ return str(uuid.uuid4().int)\r
+\r
+##\r
+# GID is a tuple:\r
+# (uuid, urn, public_key)\r
+#\r
+# UUID is a unique identifier and is created by the python uuid module\r
+# (or the utility function create_uuid() in gid.py).\r
+#\r
+# HRN is a human readable name. It is a dotted form similar to a backward domain\r
+# name. For example, planetlab.us.arizona.bakers.\r
+#\r
+# URN is a human readable identifier of form:\r
+# "urn:publicid:IDN+toplevelauthority[:sub-auth.]*[\res. type]\ +object name"\r
+# For example, urn:publicid:IDN+planetlab:us:arizona+user+bakers \r
+#\r
+# PUBLIC_KEY is the public key of the principal identified by the UUID/HRN.\r
+# It is a Keypair object as defined in the cert.py module.\r
+#\r
+# It is expected that there is a one-to-one pairing between UUIDs and HRN,\r
+# but it is uncertain how this would be inforced or if it needs to be enforced.\r
+#\r
+# These fields are encoded using xmlrpc into the subjectAltName field of the\r
+# x509 certificate. Note: Call encode() once the fields have been filled in\r
+# to perform this encoding.\r
+\r
+\r
+class GID(Certificate):\r
+ uuid = None\r
+ hrn = None\r
+ urn = None\r
+ email = None # for adding to the SubjectAltName\r
+\r
+ ##\r
+ # Create a new GID object\r
+ #\r
+ # @param create If true, create the X509 certificate\r
+ # @param subject If subject!=None, create the X509 cert and set the subject name\r
+ # @param string If string!=None, load the GID from a string\r
+ # @param filename If filename!=None, load the GID from a file\r
+ # @param lifeDays life of GID in days - default is 1825==5 years\r
+\r
+ def __init__(self, create=False, subject=None, string=None, filename=None, uuid=None, hrn=None, urn=None, lifeDays=1825):\r
+ \r
+ Certificate.__init__(self, lifeDays, create, subject, string, filename)\r
+ if subject:\r
+ logger.debug("Creating GID for subject: %s" % subject)\r
+ if uuid:\r
+ self.uuid = int(uuid)\r
+ if hrn:\r
+ self.hrn = hrn\r
+ self.urn = hrn_to_urn(hrn, 'unknown')\r
+ if urn:\r
+ self.urn = urn\r
+ self.hrn, type = urn_to_hrn(urn)\r
+\r
+ def set_uuid(self, uuid):\r
+ if isinstance(uuid, str):\r
+ self.uuid = int(uuid)\r
+ else:\r
+ self.uuid = uuid\r
+\r
+ def get_uuid(self):\r
+ if not self.uuid:\r
+ self.decode()\r
+ return self.uuid\r
+\r
+ def set_hrn(self, hrn):\r
+ self.hrn = hrn\r
+\r
+ def get_hrn(self):\r
+ if not self.hrn:\r
+ self.decode()\r
+ return self.hrn\r
+\r
+ def set_urn(self, urn):\r
+ self.urn = urn\r
+ self.hrn, type = urn_to_hrn(urn)\r
+ \r
+ def get_urn(self):\r
+ if not self.urn:\r
+ self.decode()\r
+ return self.urn \r
+\r
+ # Will be stuffed into subjectAltName\r
+ def set_email(self, email):\r
+ self.email = email\r
+\r
+ def get_email(self):\r
+ if not self.email:\r
+ self.decode()\r
+ return self.email\r
+\r
+ def get_type(self):\r
+ if not self.urn:\r
+ self.decode()\r
+ _, t = urn_to_hrn(self.urn)\r
+ return t\r
+ \r
+ ##\r
+ # Encode the GID fields and package them into the subject-alt-name field\r
+ # of the X509 certificate. This must be called prior to signing the\r
+ # certificate. It may only be called once per certificate.\r
+\r
+ def encode(self):\r
+ if self.urn:\r
+ urn = self.urn\r
+ else:\r
+ urn = hrn_to_urn(self.hrn, None)\r
+ \r
+ str = "URI:" + urn\r
+\r
+ if self.uuid:\r
+ str += ", " + "URI:" + uuid.UUID(int=self.uuid).urn\r
+ \r
+ if self.email:\r
+ str += ", " + "email:" + self.email\r
+\r
+ self.set_data(str, 'subjectAltName')\r
+\r
+ \r
+\r
+\r
+ ##\r
+ # Decode the subject-alt-name field of the X509 certificate into the\r
+ # fields of the GID. This is automatically called by the various get_*()\r
+ # functions in this class.\r
+\r
+ def decode(self):\r
+ data = self.get_data('subjectAltName')\r
+ dict = {}\r
+ if data:\r
+ if data.lower().startswith('uri:http://<params>'):\r
+ dict = xmlrpclib.loads(data[11:])[0][0]\r
+ else:\r
+ spl = data.split(', ')\r
+ for val in spl:\r
+ if val.lower().startswith('uri:urn:uuid:'):\r
+ dict['uuid'] = uuid.UUID(val[4:]).int\r
+ elif val.lower().startswith('uri:urn:publicid:idn+'):\r
+ dict['urn'] = val[4:]\r
+ elif val.lower().startswith('email:'):\r
+ # FIXME: Ensure there isn't cruft in that address...\r
+ # EG look for email:copy,....\r
+ dict['email'] = val[6:]\r
+ \r
+ self.uuid = dict.get("uuid", None)\r
+ self.urn = dict.get("urn", None)\r
+ self.hrn = dict.get("hrn", None)\r
+ self.email = dict.get("email", None)\r
+ if self.urn:\r
+ self.hrn = urn_to_hrn(self.urn)[0]\r
+\r
+ ##\r
+ # Dump the credential to stdout.\r
+ #\r
+ # @param indent specifies a number of spaces to indent the output\r
+ # @param dump_parents If true, also dump the parents of the GID\r
+\r
+ def dump(self, *args, **kwargs):\r
+ print self.dump_string(*args,**kwargs)\r
+\r
+ def dump_string(self, indent=0, dump_parents=False):\r
+ result=" "*(indent-2) + "GID\n"\r
+ result += " "*indent + "hrn:" + str(self.get_hrn()) +"\n"\r
+ result += " "*indent + "urn:" + str(self.get_urn()) +"\n"\r
+ result += " "*indent + "uuid:" + str(self.get_uuid()) + "\n"\r
+ if self.get_email() is not None:\r
+ result += " "*indent + "email:" + str(self.get_email()) + "\n"\r
+ filename=self.get_filename()\r
+ if filename: result += "Filename %s\n"%filename\r
+\r
+ if self.parent and dump_parents:\r
+ result += " "*indent + "parent:\n"\r
+ result += self.parent.dump_string(indent+4, dump_parents)\r
+ return result\r
+\r
+ ##\r
+ # Verify the chain of authenticity of the GID. First perform the checks\r
+ # of the certificate class (verifying that each parent signs the child,\r
+ # etc). In addition, GIDs also confirm that the parent's HRN is a prefix\r
+ # of the child's HRN, and the parent is of type 'authority'.\r
+ #\r
+ # Verifying these prefixes prevents a rogue authority from signing a GID\r
+ # for a principal that is not a member of that authority. For example,\r
+ # planetlab.us.arizona cannot sign a GID for planetlab.us.princeton.foo.\r
+\r
+ def verify_chain(self, trusted_certs = None):\r
+ # do the normal certificate verification stuff\r
+ trusted_root = Certificate.verify_chain(self, trusted_certs) \r
+ \r
+ if self.parent:\r
+ # make sure the parent's hrn is a prefix of the child's hrn\r
+ if not hrn_authfor_hrn(self.parent.get_hrn(), self.get_hrn()):\r
+ raise GidParentHrn("This cert HRN %s isn't in the namespace for parent HRN %s" % (self.get_hrn(), self.parent.get_hrn()))\r
+\r
+ # Parent must also be an authority (of some type) to sign a GID\r
+ # There are multiple types of authority - accept them all here\r
+ if not self.parent.get_type().find('authority') == 0:\r
+ raise GidInvalidParentHrn("This cert %s's parent %s is not an authority (is a %s)" % (self.get_hrn(), self.parent.get_hrn(), self.parent.get_type()))\r
+\r
+ # Then recurse up the chain - ensure the parent is a trusted\r
+ # root or is in the namespace of a trusted root\r
+ self.parent.verify_chain(trusted_certs)\r
+ else:\r
+ # make sure that the trusted root's hrn is a prefix of the child's\r
+ trusted_gid = GID(string=trusted_root.save_to_string())\r
+ trusted_type = trusted_gid.get_type()\r
+ trusted_hrn = trusted_gid.get_hrn()\r
+ #if trusted_type == 'authority':\r
+ # trusted_hrn = trusted_hrn[:trusted_hrn.rindex('.')]\r
+ cur_hrn = self.get_hrn()\r
+ if not hrn_authfor_hrn(trusted_hrn, cur_hrn):\r
+ raise GidParentHrn("Trusted root with HRN %s isn't a namespace authority for this cert %s" % (trusted_hrn, cur_hrn))\r
+\r
+ # There are multiple types of authority - accept them all here\r
+ if not trusted_type.find('authority') == 0:\r
+ raise GidInvalidParentHrn("This cert %s's trusted root signer %s is not an authority (is a %s)" % (self.get_hrn(), trusted_hrn, trusted_type))\r
+\r
+ return\r
git://git.onelab.eu / sfa.git / commitdiff