from afs cimport * cdef import from "afs/ptuser.h": enum: PR_MAXNAMELEN PRGRP ANONYMOUSID ctypedef char prname[PR_MAXNAMELEN] struct namelist: unsigned int namelist_len prname *namelist_val struct prlist: unsigned int prlist_len afs_int32 *prlist_val struct idlist: unsigned int idlist_len afs_int32 *idlist_val int ubik_PR_NameToID(ubik_client *, afs_int32, namelist *, idlist *) int ubik_PR_IDToName(ubik_client *, afs_int32, idlist *, namelist *) int ubik_PR_INewEntry(ubik_client *, afs_int32, char *, afs_int32, afs_int32) int ubik_PR_NewEntry(ubik_client *, afs_int32, char *, afs_int32, afs_int32, afs_int32 *) int ubik_PR_Delete(ubik_client *, afs_int32, afs_int32) int ubik_PR_AddToGroup(ubik_client *, afs_int32, afs_int32, afs_int32) int ubik_PR_RemoveFromGroup(ubik_client *, afs_int32, afs_int32, afs_int32) int ubik_PR_ListElements(ubik_client *, afs_int32, afs_int32, prlist *, afs_int32 *) int ubik_PR_ListOwned(ubik_client *, afs_int32, afs_int32, prlist *, afs_int32 *) cdef import from "afs/pterror.h": enum: PRNOENT PRTOOMANY void initialize_PT_error_table() cdef class PTS: cdef ubik_client * client def __cinit__(self, cell=None, sec=1): """ Open a connection to the protection server. A PTS object is essentially a handle to talk to the server in a given cell. cell defaults to None. If no argument is passed for cell, PTS connects to the home cell. sec is the security level, an integer from 0 to 3: - 0: unauthenticated connection - 1: try authenticated, then fall back to unauthenticated - 2: fail if an authenticated connection can't be established - 3: same as 2, plus encrypt all traffic to the protection server """ cdef afs_int32 code cdef afsconf_dir *cdir cdef afsconf_cell info cdef char * c_cell cdef ktc_principal prin cdef ktc_token token cdef rx_securityClass *sc cdef rx_connection *serverconns[MAXSERVERS] cdef int i initialize_PT_error_table() if cell is None: c_cell = NULL else: c_cell = cell self.client = NULL code = rx_Init(0) if code != 0: raise Exception(code, "Error initializing Rx") cdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH) if cdir is NULL: raise OSError(errno, "Error opening configuration directory (%s): %s" % \ (AFSDIR_CLIENT_ETC_DIRPATH, strerror(errno))) code = afsconf_GetCellInfo(cdir, c_cell, "afsprot", &info) if code != 0: raise Exception(code, "GetCellInfo: %s" % afs_error_message(code)) if sec > 0: strncpy(prin.cell, info.name, sizeof(prin.cell)) prin.instance[0] = 0 strncpy(prin.name, "afs", sizeof(prin.name)) code = ktc_GetToken(&prin, &token, sizeof(token), NULL); if code != 0: if sec >= 2: # No really - we wanted authentication raise Exception(code, "Failed to get token for service AFS: %s" % afs_error_message(code)) sec = 0 else: if sec == 3: level = rxkad_crypt else: level = rxkad_clear sc = rxkad_NewClientSecurityObject(level, &token.sessionKey, token.kvno, token.ticketLen, token.ticket) if sec == 0: sc = rxnull_NewClientSecurityObject() else: sec = 2 memset(serverconns, 0, sizeof(serverconns)) for 0 <= i < info.numServers: serverconns[i] = rx_NewConnection(info.hostAddr[i].sin_addr.s_addr, info.hostAddr[i].sin_port, PRSRV, sc, sec) code = ubik_ClientInit(serverconns, &self.client) if code != 0: raise Exception("Failed to initialize ubik connection to Protection server: %s" % afs_error_message(code)) code = rxs_Release(sc) def __dealloc__(self): ubik_ClientDestroy(self.client) rx_Finalize() def NameToId(self, name): """ Converts a user or group to an AFS ID. """ cdef namelist lnames cdef idlist lids cdef afs_int32 code, id name = name.lower() lids.idlist_len = 0 lids.idlist_val = NULL lnames.namelist_len = 1 lnames.namelist_val = malloc(PR_MAXNAMELEN) strncpy(lnames.namelist_val[0], name, PR_MAXNAMELEN) code = ubik_PR_NameToID(self.client, 0, &lnames, &lids) if lids.idlist_val is not NULL: id = lids.idlist_val[0] free(lids.idlist_val) if id == ANONYMOUSID: code = PRNOENT if code != 0: raise Exception("Failed to lookup PTS name: %s" % afs_error_message(code)) return id def IdToName(self, id): """ Convert an AFS ID to the name of a user or group. """ cdef namelist lnames cdef idlist lids cdef afs_int32 code cdef char name[PR_MAXNAMELEN] lids.idlist_len = 1 lids.idlist_val = malloc(sizeof(afs_int32)) lids.idlist_val[0] = id lnames.namelist_len = 0 lnames.namelist_val = NULL code = ubik_PR_IDToName(self.client, 0, &lids, &lnames) if lnames.namelist_val is not NULL: strncpy(name, lnames.namelist_val[0], sizeof(name)) free(lnames.namelist_val) if lids.idlist_val is not NULL: free(lids.idlist_val) if name == str(id): code = PRNOENT if code != 0: raise Exception("Failed to lookup PTS ID: %s" % afs_error_message(code)) return name def CreateUser(self, name, id=None): """ Create a new user in the protection database. If an ID is provided, that one will be used. """ cdef afs_int32 code cdef afs_int32 cid name = name[:PR_MAXNAMELEN].lower() if id is not None: cid = id if id is not None: code = ubik_PR_INewEntry(self.client, 0, name, cid, 0) else: code = ubik_PR_NewEntry(self.client, 0, name, 0, 0, &cid) if code != 0: raise Exception("Failed to create user: %s" % afs_error_message(code)) return cid def CreateGroup(self, name, owner, id=None): """ Create a new group in the protection database. If an ID is provided, that one will be used. """ cdef afs_int32 code, cid name = name[:PR_MAXNAMELEN].lower() oid = self.NameToId(owner) if id is not None: cid = id code = ubik_PR_INewEntry(self.client, 0, name, cid, oid) else: code = ubik_PR_NewEntry(self.client, 0, name, PRGRP, oid, &cid) if code != 0: raise Exception("Failed to create group: %s" % afs_error_message(code)) return cid def Delete(self, id): """ Delete the protection database entry with the provided ID. """ cdef afs_int32 code code = ubik_PR_Delete(self.client, 0, id) if code != 0: raise Exception("Failed to delete user: %s" % afs_error_message(code)) def AddToGroup(self, uid, gid): """ Add the user with the given ID to the group with the given ID. """ cdef afs_int32 code code = ubik_PR_AddToGroup(self.client, 0, uid, gid) if code != 0: raise Exception("Failed to add user to group: %s" % afs_error_message(code)) def RemoveFromGroup(self, uid, gid): """ Remove the user with the given ID from the group with the given ID. """ cdef afs_int32 code code = ubik_PR_RemoveFromGroup(self.client, 0, uid, gid) if code != 0: raise Exception("Failed to remove user from group: %s" % afs_error_message(code)) def ListMembers(self, id): """ Get the membership of an entity. If id is a group ID, this returns the users that are in that group. If id is a user ID, this returns the list of groups that user is on. This returns a list of PTS IDs. """ cdef afs_int32 code, over cdef prlist alist cdef int i cdef object members = [] alist.prlist_len = 0 alist.prlist_val = NULL code = ubik_PR_ListElements(self.client, 0, id, &alist, &over) if alist.prlist_val is not NULL: for i in range(alist.prlist_len): members.append(alist.prlist_val[i]) free(alist.prlist_val) if over: code = PRTOOMANY if code != 0: raise Exception("Failed to get group membership: %s" % afs_error_message(code)) return members def ListOwned(self, oid): """ Get all groups owned by an entity. """ cdef afs_int32 code, over cdef prlist alist cdef int i cdef object owned = [] alist.prlist_len = 0 alist.prlist_val = NULL code = ubik_PR_ListOwned(self.client, 0, oid, &alist, &over) if alist.prlist_val is not NULL: for i in range(alist.prlist_len): owned.append(alist.prlist_val[i]) free(alist.prlist_val) if over: code = PRTOOMANY if code != 0: raise Exception("Failed to get owned entities: %s" % afs_error_message(code)) return owned