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()
28 self.config = Config()
29 self.trusted_cert_list = TrustedRootList(self.config.get_trustedroots_dir()).get_list()
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 # get auth info will throw an exception if the authority doesnt exist
100 self.get_auth_info(name)
103 def verify_object_belongs_to_me(self, name):
105 Verify that an object belongs to our hierarchy. By extension,
106 this implies that the authority that owns the object belongs
107 to our hierarchy. If it does not an exception is thrown.
109 @param name human readable name of object
111 auth_name = self.get_authority(name)
114 if name == self.config.SFA_INTERFACE_HRN:
116 self.verify_auth_belongs_to_me(auth_name)
118 def verify_auth_belongs_to_me(self, name):
119 # get auth info will throw an exception if the authority doesnt exist
120 self.get_auth_info(name)
123 def verify_object_permission(self, name):
125 Verify that the object gid that was specified in the credential
126 allows permission to the object 'name'. This is done by a simple
127 prefix test. For example, an object_gid for plc.arizona would
128 match the objects plc.arizona.slice1 and plc.arizona.
130 @param name human readable name to test
132 object_hrn = self.object_gid.get_hrn()
133 if object_hrn == name:
135 if name.startswith(object_hrn + "."):
137 #if name.startswith(get_authority(name)):
140 raise PermissionError(name)
142 def determine_user_rights(self, src_cred, record):
144 Given a user credential and a record, determine what set of rights the
145 user should have to that record.
147 Src_cred can be None when obtaining a user credential, but should be
148 set to a valid user credential when obtaining a slice or authority
151 This is intended to replace determine_rights() and
152 verify_cancreate_credential()
155 type = record['type']
157 cred_object_hrn = src_cred.get_gid_object().get_hrn()
159 # supplying src_cred==None is only valid when obtaining user
161 #assert(type == "user")
163 cred_object_hrn = None
168 researchers = record.get("researcher", [])
169 if (cred_object_hrn in researchers):
176 elif type == "authority":
177 pis = record.get("pi", [])
178 operators = record.get("operator", [])
179 rl.add("authority,sa,ma")
180 if (cred_object_hrn in pis):
182 if (cred_object_hrn in operators):
192 def verify_cancreate_credential(self, src_cred, record):
194 Verify that a user can retrive a particular type of credential.
195 For slices, the user must be on the researcher list. For SA and
196 MA the user must be on the pi and operator lists respectively
199 type = record.get_type()
200 cred_object_hrn = src_cred.get_gid_object().get_hrn()
201 if cred_object_hrn in [self.config.SFA_REGISTRY_ROOT_AUTH]:
204 researchers = record.get("researcher", [])
205 if not (cred_object_hrn in researchers):
206 raise PermissionError(cred_object_hrn + " is not in researcher list for " + record.get_name())
208 pis = record.get("pi", [])
209 if not (cred_object_hrn in pis):
210 raise PermissionError(cred_object_hrn + " is not in pi list for " + record.get_name())
212 operators = record.get("operator", [])
213 if not (cred_object_hrn in operators):
214 raise PermissionError(cred_object_hrn + " is not in operator list for " + record.get_name())
216 def get_authority(self, hrn):
217 return get_authority(hrn)