X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/python-afs.git/blobdiff_plain/62df45819cdcbd21b579a471c821f0876743b2a4..c16288e834009b59936443ce4e73e9afd147bb01:/afs/_pts.pyx diff --git a/afs/_pts.pyx b/afs/_pts.pyx index c4e4dcf..9eddbb0 100644 --- a/afs/_pts.pyx +++ b/afs/_pts.pyx @@ -1,6 +1,103 @@ 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 + + struct prcheckentry: + afs_int32 flags + afs_int32 id + afs_int32 owner + afs_int32 creator + afs_int32 ngroups + afs_int32 count + + 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 *) + int ubik_PR_ListEntry(ubik_client *, afs_int32, afs_int32, prcheckentry *) + int ubik_PR_ChangeEntry(ubik_client *, afs_int32, afs_int32, char *, afs_int32, afs_int32) + int ubik_PR_IsAMemberOf(ubik_client *, afs_int32, afs_int32, afs_int32, afs_int32 *) + int ubik_PR_ListMax(ubik_client *, afs_int32, afs_int32 *, afs_int32 *) + +cdef import from "afs/pterror.h": + enum: + PRNOENT + PRTOOMANY + + void initialize_PT_error_table() + +cdef class PTEntry: + cdef public afs_int32 flags + cdef public afs_int32 id + cdef public afs_int32 owner + cdef public afs_int32 creator + cdef public afs_int32 ngroups + cdef public afs_int32 count + +cdef int _ptentry_from_c(PTEntry p_entry, prcheckentry c_entry) except -1: + if p_entry is None: + raise TypeError + return -1 + + p_entry.flags = c_entry.flags + p_entry.id = c_entry.id + p_entry.owner = c_entry.owner + p_entry.creator = c_entry.creator + p_entry.ngroups = c_entry.ngroups + p_entry.count = c_entry.count + return 0 + +cdef int _ptentry_to_c(prcheckentry * c_entry, PTEntry p_entry) except -1: + if p_entry is None: + raise TypeError + return -1 + + c_entry.flags = p_entry.flags + c_entry.id = p_entry.id + c_entry.owner = p_entry.owner + c_entry.creator = p_entry.creator + c_entry.ngroups = p_entry.ngroups + c_entry.count = p_entry.count + return 0 + cdef class PTS: + """ + 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 ubik_client * client def __cinit__(self, cell=None, sec=1): @@ -14,6 +111,8 @@ cdef class PTS: cdef rx_connection *serverconns[MAXSERVERS] cdef int i + initialize_PT_error_table() + if cell is None: c_cell = NULL else: @@ -76,3 +175,249 @@ cdef class PTS: 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 + + def ListEntry(self, id): + """ + Load a PTEntry instance with information about the provided + ID. + """ + cdef afs_int32 code + cdef prcheckentry centry + cdef object entry = PTEntry() + + code = ubik_PR_ListEntry(self.client, 0, id, ¢ry) + if code != 0: + raise Exception("Error getting entity info: %s" % afs_error_message(code)) + + _ptentry_from_c(entry, centry) + return entry + + def ChangeEntry(self, id, newname=None, newid=None, newoid=None): + """ + Change the name, ID, and/or owner of a PTS entity. + + For any of newname, newid, and newoid which aren't specified + or ar None, the value isn't changed. + """ + cdef afs_int32 code + cdef afs_int32 c_newid = 0, c_newoid = 0 + cdef char * c_newname + + if newname is None: + newname = self.IdToName(id) + c_newname = newname + if newid is not None: + c_newid = newid + if newoid is not None: + c_newoid = newoid + + code = ubik_PR_ChangeEntry(self.client, 0, id, c_newname, c_newoid, c_newid) + if code != 0: + raise Exception("Error changing entity info: %s" % afs_error_message(code)) + + def IsAMemberOf(self, uid, gid): + """ + Return True if the given uid is a member of the given gid. + """ + cdef afs_int32 code + cdef afs_int32 flag + + code = ubik_PR_IsAMemberOf(self.client, 0, uid, gid, &flag) + if code != 0: + raise Exception("Error testing membership: %s" % afs_error_message(code)) + + return bool(flag) + + def ListMax(self): + """ + Return a tuple of the maximum user ID and the maximum group + ID currently assigned. + """ + cdef afs_int32 code, uid, gid + + code = ubik_PR_ListMax(self.client, 0, &uid, &gid) + if code != 0: + raise Exception("Error looking up max uid/gid: %s" % afs_error_message(code)) + + return (uid, gid)