renamed sfaticket from util/ to trust/
[sfa.git] / sfa / plc / api.py
index cfda327..8a03a87 100644 (file)
@@ -1,51 +1,87 @@
 #
 # SFA XML-RPC and SOAP interfaces
 #
-### $Id$
-### $URL$
-#
 
 import sys
 import os
 import traceback
 import string
+import datetime
 import xmlrpclib
-from sfa.trust.auth import Auth
-from sfa.util.config import *
+
 from sfa.util.faults import *
-from sfa.util.debug import *
-from sfa.trust.rights import *
-from sfa.trust.credential import *
-from sfa.trust.certificate import *
-from sfa.util.namespace import *
 from sfa.util.api import *
+from sfa.util.config import *
+from sfa.util.sfalogging import logger
+import sfa.util.xmlrpcprotocol as xmlrpcprotocol
+from sfa.trust.auth import Auth
+from sfa.trust.rights import Right, Rights, determine_rights
+from sfa.trust.credential import Credential,Keypair
+from sfa.trust.certificate import Certificate
+from sfa.util.xrn import get_authority, hrn_to_urn
+from sfa.util.plxrn import hostname_to_hrn, hrn_to_pl_slicename, hrn_to_pl_slicename, slicename_to_hrn
 from sfa.util.nodemanager import NodeManager
-from sfa.util.sfalogging import *
+try:
+    from collections import defaultdict
+except:
+    class defaultdict(dict):
+        def __init__(self, default_factory=None, *a, **kw):
+            if (default_factory is not None and
+                not hasattr(default_factory, '__call__')):
+                raise TypeError('first argument must be callable')
+            dict.__init__(self, *a, **kw)
+            self.default_factory = default_factory
+        def __getitem__(self, key):
+            try:
+                return dict.__getitem__(self, key)
+            except KeyError:
+                return self.__missing__(key)
+        def __missing__(self, key):
+            if self.default_factory is None:
+                raise KeyError(key)
+            self[key] = value = self.default_factory()
+            return value
+        def __reduce__(self):
+            if self.default_factory is None:
+                args = tuple()
+            else:
+                args = self.default_factory,
+            return type(self), args, None, None, self.items()
+        def copy(self):
+            return self.__copy__()
+        def __copy__(self):
+            return type(self)(self.default_factory, self)
+        def __deepcopy__(self, memo):
+            import copy
+            return type(self)(self.default_factory,
+                              copy.deepcopy(self.items()))
+        def __repr__(self):
+            return 'defaultdict(%s, %s)' % (self.default_factory,
+                                            dict.__repr__(self))
+## end of http://code.activestate.com/recipes/523034/ }}}
 
 def list_to_dict(recs, key):
+    """
+    convert a list of dictionaries into a dictionary keyed on the 
+    specified dictionary key 
+    """
     keys = [rec[key] for rec in recs]
     return dict(zip(keys, recs))
 
-def handle_exception(method):
-    def wrapper(*args, **kwargs):
-        try: return method(*args, **kwargs)
-        except: raise SfaAPIError(traceback.format_exc())
-    return wrapper
-
 class SfaAPI(BaseAPI):
 
     # flat list of method names
     import sfa.methods
     methods = sfa.methods.all
     
-    def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8", methods='sfa.methods', \
-                 peer_cert = None, interface = None, key_file = None, cert_file = None):
+    def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8", 
+                 methods='sfa.methods', peer_cert = None, interface = None, 
+                key_file = None, cert_file = None, cache = None):
         BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, \
                          peer_cert=peer_cert, interface=interface, key_file=key_file, \
-                         cert_file=cert_file)
+                         cert_file=cert_file, cache=cache)
  
         self.encoding = encoding
-
         from sfa.util.table import SfaTable
         self.SfaTable = SfaTable
         # Better just be documenting the API
@@ -63,82 +99,113 @@ class SfaAPI(BaseAPI):
         self.credential = None
         # Initialize the PLC shell only if SFA wraps a myPLC
         rspec_type = self.config.get_aggregate_type()
-        if (rspec_type == 'pl' or rspec_type == 'vini'):
+        if (rspec_type == 'pl' or rspec_type == 'vini' or \
+            rspec_type == 'eucalyptus' or rspec_type == 'max'):
             self.plshell = self.getPLCShell()
-            self.plshell_version = self.getPLCShellVersion()
+            self.plshell_version = "4.3"
 
         self.hrn = self.config.SFA_INTERFACE_HRN
         self.time_format = "%Y-%m-%d %H:%M:%S"
-        self.logger=get_sfa_logger()
 
-    @handle_exception 
+    
     def getPLCShell(self):
         self.plauth = {'Username': self.config.SFA_PLC_USER,
                        'AuthMethod': 'password',
                        'AuthString': self.config.SFA_PLC_PASSWORD}
-        try:
-            sys.path.append(os.path.dirname(os.path.realpath("/usr/bin/plcsh")))
-            self.plshell_type = 'direct'
-            import PLC.Shell
-            shell = PLC.Shell.Shell(globals = globals())
-            shell.AuthCheck(self.plauth)
-            return shell
-        except ImportError:
-            self.plshell_type = 'xmlrpc' 
-            # connect via xmlrpc
-            url = self.config.SFA_PLC_URL
-            shell = xmlrpclib.Server(url, verbose = 0, allow_none = True)
-            shell.AuthCheck(self.plauth)
-            return shell
-    
-    @handle_exception 
-    def getPLCShellVersion(self):
-        # We need to figure out what version of PLCAPI we are talking to.
-        # Some calls we need to make later will be different depending on
-        # the api version. 
-        try:
-            # This is probably a bad way to determine api versions
-            # but its easy and will work for now. Lets try to make 
-            # a call that only exists is PLCAPI.4.3. If it fails, we
-            # can assume the api version is 4.2
-            self.plshell.GetTagTypes(self.plauth)
-            return '4.3'
-        except:
-            return '4.2'
-            
 
-    def getCredential(self):
-        if self.interface in ['registry']:
-            return self.getCredentialFromLocalRegistry()
+        # The native shell (PLC.Shell.Shell) is more efficient than xmlrpc,
+        # but it leaves idle db connections open. use xmlrpc until we can figure
+        # out why PLC.Shell.Shell doesn't close db connection properly     
+        #try:
+        #    sys.path.append(os.path.dirname(os.path.realpath("/usr/bin/plcsh")))
+        #    self.plshell_type = 'direct'
+        #    import PLC.Shell
+        #    shell = PLC.Shell.Shell(globals = globals())
+        #except:
+        
+        self.plshell_type = 'xmlrpc' 
+        url = self.config.SFA_PLC_URL
+        shell = xmlrpclib.Server(url, verbose = 0, allow_none = True)
+        return shell
+
+    def get_server(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:
-            return self.getCredentialFromRegistry()
-    
-    def getCredentialFromRegistry(self):
-        """ 
-        Get our credential from a remote registry 
+            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.get_server(key_file, cert_file, timeout)
+        return server
+               
+        
+    def getCredential(self):
+        """
+        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 = path + os.sep + filename
-        try:
-            credential = Credential(filename = cred_filename)
-            return credential.save_to_string(save_parents=True)
-        except IOError:
-            from sfa.server.registry import Registries
-            registries = Registries(self)
-            registry = registries[self.hrn]
-            cert_string=self.cert.save_to_string(save_parents=True)
-            # get self credential
-            self_cred = registry.get_self_credential(cert_string, type, self.hrn)
-            # get credential
-            cred = registry.get_credential(self_cred, type, self.hrn)
-            
-            # save cred to file
-            Credential(string=cred).save_to_file(cred_filename, save_parents=True)
-            return cred
+        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() < 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 getCredentialFromLocalRegistry(self):
+
+    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(string=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.get_server(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.
         """
@@ -151,7 +218,7 @@ class SfaAPI(BaseAPI):
             auth_hrn = hrn
         auth_info = self.auth.get_auth_info(auth_hrn)
         table = self.SfaTable()
-        records = table.findObjects(hrn)
+        records = table.findObjects({'hrn': hrn, 'type': 'authority+sa'})
         if not records:
             raise RecordNotFound
         record = records[0]
@@ -160,19 +227,14 @@ class SfaAPI(BaseAPI):
         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(key=auth_info.get_pkey_object(), subject=auth_hrn)
-        new_cred.set_pubkey(object_gid.get_pubkey())
+        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)
-
-        auth_kind = "authority,ma,sa"
-
-        new_cred.set_parent(self.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
-
         new_cred.encode()
         new_cred.sign()
 
-        return new_cred.save_to_string(save_parents=True)
+        return new_cred
    
 
     def loadCredential (self):
@@ -190,6 +252,8 @@ class SfaAPI(BaseAPI):
         except IOError:
             self.credential = self.getCredentialFromRegistry()
 
+
+
     ##
     # Convert SFA fields to PLC fields for use when registering up updating
     # registry record in the PLC database
@@ -293,7 +357,7 @@ class SfaAPI(BaseAPI):
 
         # fill record info
         for record in records:
-            # records with pointer==-1 do not have plc info associated with them.
+            # records with pointer==-1 do not have plc info.
             # for example, the top level authority records which are
             # authorities, but not PL "sites"
             if record['pointer'] == -1:
@@ -306,8 +370,11 @@ class SfaAPI(BaseAPI):
                         break
             # fill in key info
             if record['type'] == 'user':
-                pubkeys = [keys[key_id]['key'] for key_id in record['key_ids'] if key_id in keys] 
-                record['keys'] = pubkeys
+                if 'key_ids' not in record:
+                    logger.info("user record has no 'key_ids' - need to import from myplc ?")
+                else:
+                    pubkeys = [keys[key_id]['key'] for key_id in record['key_ids'] if key_id in keys] 
+                    record['keys'] = pubkeys
 
         # fill in record hrns
         records = self.fill_record_hrns(records)   
@@ -350,7 +417,6 @@ class SfaAPI(BaseAPI):
        
         # convert ids to hrns
         for record in records:
-             
             # get all relevant data
             type = record['type']
             pointer = record['pointer']
@@ -384,67 +450,117 @@ class SfaAPI(BaseAPI):
                                if site_id in sites]
                 site_hrns = [".".join([auth_hrn, lbase]) for lbase in login_bases]
                 record['sites'] = site_hrns
-
+            
         return records   
 
     def fill_record_sfa_info(self, records):
+
+        def startswith(prefix, values):
+            return [value for value in values if value.startswith(prefix)]
+
         # get person ids
-        has_authority = False
-        has_slice = False
         person_ids = []
+        site_ids = []
         for record in records:
-            if record['type'] == 'authority':
-                has_authority = True
             person_ids.extend(record.get("person_ids", []))
+            site_ids.extend(record.get("site_ids", [])) 
+            if 'site_id' in record:
+                site_ids.append(record['site_id']) 
         
-        # get sfa info
+        # get all pis from the sites we've encountered
+        # and store them in a dictionary keyed on site_id 
+        site_pis = {}
+        if site_ids:
+            pi_filter = {'|roles': ['pi'], '|site_ids': site_ids} 
+            pi_list = self.plshell.GetPersons(self.plauth, pi_filter, ['person_id', 'site_ids'])
+            for pi in pi_list:
+                # we will need the pi's hrns also
+                person_ids.append(pi['person_id'])
+                
+                # we also need to keep track of the sites these pis
+                # belong to
+                for site_id in pi['site_ids']:
+                    if site_id in site_pis:
+                        site_pis[site_id].append(pi)
+                    else:
+                        site_pis[site_id] = [pi]
+                 
+        # get sfa records for all records associated with these records.   
+        # we'll replace pl ids (person_ids) with hrns from the sfa records
+        # we obtain
+        
+        # get the sfa records
         table = self.SfaTable()
         person_list, persons = [], {}
-        pl_person_list, pl_persons = [], {}
         person_list = table.find({'type': 'user', 'pointer': person_ids})
-        persons = list_to_dict(person_list, 'pointer')
-        if has_authority:
-            pl_person_list = self.plshell.GetPersons(self.plauth, person_ids, ['person_id', 'roles'])
-            pl_persons = list_to_dict(pl_person_list, 'person_id')
-            
+        # create a hrns keyed on the sfa record's pointer.
+        # Its possible for  multiple records to have the same pointer so
+        # the dict's value will be a list of hrns.
+        persons = defaultdict(list)
+        for person in person_list:
+            persons[person['pointer']].append(person)
+
+        # get the pl records
+        pl_person_list, pl_persons = [], {}
+        pl_person_list = self.plshell.GetPersons(self.plauth, person_ids, ['person_id', 'roles'])
+        pl_persons = list_to_dict(pl_person_list, 'person_id')
 
         # fill sfa info
         for record in records:
             # skip records with no pl info (top level authorities)
-            if record['pointer'] == -1:
-                continue 
+            #if record['pointer'] == -1:
+            #    continue 
             sfa_info = {}
             type = record['type']
             if (type == "slice"):
-                researchers = [persons[person_id]['hrn'] for person_id in record['person_ids'] \
-                               if person_id in persons] 
-                sfa_info['researcher'] = researchers
-         
-            elif (type == "authority"):
-                pis, techs, admins = [], [], []
-                for pointer in record['person_ids']:
-                    if pointer not in persons or pointer not in pl_persons:
-                        # this means there is not sfa or pl record for this user
-                        continue   
-                    hrn = persons[pointer]['hrn'] 
-                    roles = pl_persons[pointer]['roles']   
-                    if 'pi' in roles:
-                        pis.append(hrn)
-                    if 'tech' in roles:
-                        techs.append(hrn)
-                    if 'admin' in roles:
-                        admins.append(hrn)
-            
-                    sfa_info['PI'] = pis
-                    sfa_info['operator'] = techs
-                    sfa_info['owner'] = admins
-                    # xxx TODO: OrganizationName
+                # all slice users are researchers
+                record['geni_urn'] = hrn_to_urn(record['hrn'], 'slice')
+                record['PI'] = []
+                record['researcher'] = []
+                for person_id in record.get('person_ids', []):
+                    hrns = [person['hrn'] for person in persons[person_id]]
+                    record['researcher'].extend(hrns)                
+
+                # pis at the slice's site
+                if 'site_id' in record and record['site_id'] in site_pis:
+                    pl_pis = site_pis[record['site_id']]
+                    pi_ids = [pi['person_id'] for pi in pl_pis]
+                    for person_id in pi_ids:
+                        hrns = [person['hrn'] for person in persons[person_id]]
+                        record['PI'].extend(hrns)
+                        record['geni_creator'] = record['PI'] 
+                
+            elif (type.startswith("authority")):
+                record['url'] = None
+                if record['hrn'] in self.aggregates:
+                    
+                    record['url'] = self.aggregates[record['hrn']].get_url()
+
+                if record['pointer'] != -1:
+                    record['PI'] = []
+                    record['operator'] = []
+                    record['owner'] = []
+                    for pointer in record.get('person_ids', []):
+                        if pointer not in persons or pointer not in pl_persons:
+                            # this means there is not sfa or pl record for this user
+                            continue   
+                        hrns = [person['hrn'] for person in persons[pointer]] 
+                        roles = pl_persons[pointer]['roles']   
+                        if 'pi' in roles:
+                            record['PI'].extend(hrns)
+                        if 'tech' in roles:
+                            record['operator'].extend(hrns)
+                        if 'admin' in roles:
+                            record['owner'].extend(hrns)
+                        # xxx TODO: OrganizationName
             elif (type == "node"):
                 sfa_info['dns'] = record.get("hostname", "")
                 # xxx TODO: URI, LatLong, IP, DNS
     
             elif (type == "user"):
                 sfa_info['email'] = record.get("email", "")
+                sfa_info['geni_urn'] = hrn_to_urn(record['hrn'], 'user')
+                sfa_info['geni_certificate'] = record['gid'] 
                 # xxx TODO: PostalAddress, Phone
             record.update(sfa_info)
 
@@ -460,12 +576,22 @@ class SfaAPI(BaseAPI):
         self.fill_record_sfa_info(records)
 
     def update_membership_list(self, oldRecord, record, listName, addFunc, delFunc):
-        # get a list of the HRNs tht are members of the old and new records
+        # get a list of the HRNs that are members of the old and new records
         if oldRecord:
             oldList = oldRecord.get(listName, [])
         else:
             oldList = []     
         newList = record.get(listName, [])
+        # ugly hack to see what's next
+        def normalize (value):
+            from types import StringTypes
+            from sfa.util.sfalogging import logger
+            if isinstance(value,StringTypes): return value
+            elif isinstance(value,dict): 
+                newvalue=value['text']
+                logger.info("Normalizing %s=>%s"%(value,newvalue))
+                return newvalue
+        newList=[normalize(v) for v in newList]
 
         # if the lists are the same, then we don't have to update anything
         if (oldList == newList):
@@ -531,3 +657,73 @@ class ComponentAPI(BaseAPI):
             return True
         else:
             return False
+
+    def get_registry(self):
+        addr, port = self.config.SFA_REGISTRY_HOST, self.config.SFA_REGISTRY_PORT
+        url = "http://%(addr)s:%(port)s" % locals()
+        server = xmlrpcprotocol.get_server(url, self.key_file, self.cert_file)
+        return server
+
+    def get_node_key(self):
+        # this call requires no authentication,
+        # so we can generate a random keypair here
+        subject="component"
+        (kfd, keyfile) = tempfile.mkstemp()
+        (cfd, certfile) = tempfile.mkstemp()
+        key = Keypair(create=True)
+        key.save_to_file(keyfile)
+        cert = Certificate(subject=subject)
+        cert.set_issuer(key=key, subject=subject)
+        cert.set_pubkey(key)
+        cert.sign()
+        cert.save_to_file(certfile)
+        registry = self.get_registry()
+        # the registry will scp the key onto the node
+        registry.get_key()        
+
+    def getCredential(self):
+        """
+        Get our credential from a remote registry
+        """
+        path = self.config.SFA_DATA_DIR
+        config_dir = self.config.config_path
+        cred_filename = path + os.sep + 'node.cred'
+        try:
+            credential = Credential(filename = cred_filename)
+            return credential.save_to_string(save_parents=True)
+        except IOError:
+            node_pkey_file = config_dir + os.sep + "node.key"
+            node_gid_file = config_dir + os.sep + "node.gid"
+            cert_filename = path + os.sep + 'server.cert'
+            if not os.path.exists(node_pkey_file) or \
+               not os.path.exists(node_gid_file):
+                self.get_node_key()
+
+            # get node's hrn
+            gid = GID(filename=node_gid_file)
+            hrn = gid.get_hrn()
+            # get credential from registry
+            cert_str = Certificate(filename=cert_filename).save_to_string(save_parents=True)
+            registry = self.get_registry()
+            cred = registry.GetSelfCredential(cert_str, hrn, 'node')
+            Credential(string=cred).save_to_file(credfile, save_parents=True)            
+
+            return cred
+
+    def clean_key_cred(self):
+        """
+        remove the existing keypair and cred  and generate new ones
+        """
+        files = ["server.key", "server.cert", "node.cred"]
+        for f in files:
+            filepath = KEYDIR + os.sep + f
+            if os.path.isfile(filepath):
+                os.unlink(f)
+
+        # install the new key pair
+        # GetCredential will take care of generating the new keypair
+        # and credential
+        self.get_node_key()
+        self.getCredential()
+
+