2 # GeniAPI authentication
10 from sfa.trust.credential import Credential
11 from sfa.trust.trustedroot import TrustedRootList
12 from sfa.trust.rights import RightList
13 from sfa.util.faults import *
14 from sfa.trust.hierarchy import Hierarchy
15 from sfa.util.genitable import GeniTable
16 from sfa.util.config import *
17 from sfa.util.misc import *
21 Credential based authentication
24 def __init__(self, peer_cert = None, config = None ):
25 self.peer_cert = peer_cert
26 self.hierarchy = Hierarchy()
27 self.trusted_cert_list = TrustedRootList().get_list()
29 self.config = Config()
32 def check(self, cred, operation):
34 Check the credential against the peer cert (callerGID included
35 in the credential matches the caller that is connected to the
36 HTTPS connection, check if the credential was signed by a
37 trusted cert and check if the credential is allowd to perform
38 the specified operation.
40 self.client_cred = Credential(string = cred)
41 self.client_gid = self.client_cred.get_gid_caller()
42 self.object_gid = self.client_cred.get_gid_object()
44 # make sure the client_gid is not blank
45 if not self.client_gid:
46 raise MissingCallerGID(self.client_cred.get_subject())
48 # make sure the client_gid matches client's certificate
49 peer_cert = self.peer_cert
50 if not peer_cert.is_pubkey(self.client_gid.get_pubkey()):
51 raise ConnectionKeyGIDMismatch(self.client_gid.get_subject())
53 # make sure the client is allowed to perform the operation
55 if not self.client_cred.can_perform(operation):
56 raise InsufficientRights(operation)
58 if self.trusted_cert_list:
59 self.client_cred.verify_chain(self.trusted_cert_list)
61 self.client_gid.verify_chain(self.trusted_cert_list)
63 self.object_gid.verify_chain(self.trusted_cert_list)
68 def verify_cred_is_me(self, credential):
70 cred = Credential(string=credential)
71 caller_gid = cred.get_gid_caller()
72 caller_hrn = caller_gid.get_hrn()
73 if caller_hrn != self.config.SFA_INTERFACE_HRN:
74 raise GeniPermissionError(self.config.SFA_INTEFACE_HRN)
78 def get_auth_info(self, auth_hrn):
80 Given an authority name, return the information for that authority.
81 This is basically a stub that calls the hierarchy module.
83 @param auth_hrn human readable name of authority
86 return self.hierarchy.get_auth_info(auth_hrn)
89 def veriry_auth_belongs_to_me(self, name):
91 Verify that an authority belongs to our hierarchy.
92 This is basically left up to the implementation of the hierarchy
93 module. If the specified name does not belong, ane exception is
94 thrown indicating the caller should contact someone else.
96 @param auth_name human readable name of authority
99 self.get_auth_info(name)
102 def verify_object_belongs_to_me(self, name):
104 Verify that an object belongs to our hierarchy. By extension,
105 this implies that the authority that owns the object belongs
106 to our hierarchy. If it does not an exception is thrown.
108 @param name human readable name of object
110 auth_name = self.get_authority(name)
111 if not auth_name or name == self.config.SFA_INTERFACE_HRN:
112 # the root authority belongs to the registry by default?
113 # TODO: is this true?
115 self.verify_auth_belongs_to_me(auth_name)
117 def verify_auth_belongs_to_me(self, name):
118 # get auth info will throw an exception if the authority doesnt exist
119 self.get_auth_info(name)
122 def verify_object_permission(self, name):
124 Verify that the object gid that was specified in the credential
125 allows permission to the object 'name'. This is done by a simple
126 prefix test. For example, an object_gid for plc.arizona would
127 match the objects plc.arizona.slice1 and plc.arizona.
129 @param name human readable name to test
131 object_hrn = self.object_gid.get_hrn()
132 if object_hrn == name:
134 if name.startswith(object_hrn + "."):
136 #if name.startswith(get_authority(name)):
139 raise PermissionError(name)
141 def determine_user_rights(self, src_cred, record):
143 Given a user credential and a record, determine what set of rights the
144 user should have to that record.
146 Src_cred can be None when obtaining a user credential, but should be
147 set to a valid user credential when obtaining a slice or authority
150 This is intended to replace determine_rights() and
151 verify_cancreate_credential()
154 type = record['type']
156 cred_object_hrn = src_cred.get_gid_object().get_hrn()
158 # supplying src_cred==None is only valid when obtaining user
160 #assert(type == "user")
162 cred_object_hrn = None
167 researchers = record.get("researcher", [])
168 if (cred_object_hrn in researchers):
175 elif type == "authority":
176 pis = record.get("pi", [])
177 operators = record.get("operator", [])
178 rl.add("authority,sa,ma")
179 if (cred_object_hrn in pis):
181 if (cred_object_hrn in operators):
191 def verify_cancreate_credential(self, src_cred, record):
193 Verify that a user can retrive a particular type of credential.
194 For slices, the user must be on the researcher list. For SA and
195 MA the user must be on the pi and operator lists respectively
198 type = record.get_type()
199 cred_object_hrn = src_cred.get_gid_object().get_hrn()
200 if cred_object_hrn in [self.config.SFA_REGISTRY_ROOT_AUTH]:
203 researchers = record.get("researcher", [])
204 if not (cred_object_hrn in researchers):
205 raise PermissionError(cred_object_hrn + " is not in researcher list for " + record.get_name())
207 pis = record.get("pi", [])
208 if not (cred_object_hrn in pis):
209 raise PermissionError(cred_object_hrn + " is not in pi list for " + record.get_name())
211 operators = record.get("operator", [])
212 if not (cred_object_hrn in operators):
213 raise PermissionError(cred_object_hrn + " is not in operator list for " + record.get_name())
215 def get_authority(self, hrn):
216 return get_authority(hrn)