X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/python-afs.git/blobdiff_plain/85af4cb8b326e4f0d07f7e183a3add570e9de9a1..a589b6a78351509326cd03bc790c271de31e7914:/afs/_pts.pyx diff --git a/afs/_pts.pyx b/afs/_pts.pyx index 707ab43..eb62c08 100644 --- a/afs/_pts.pyx +++ b/afs/_pts.pyx @@ -1,14 +1,16 @@ from afs cimport * +from afs import pyafs_error cdef import from "afs/ptuser.h": enum: PR_MAXNAMELEN - - enum: PRGRP - - enum: + PRUSERS + PRGROUPS ANONYMOUSID + PR_SF_ALLBITS + PR_SF_NGROUPS + PR_SF_NUSERS ctypedef char prname[PR_MAXNAMELEN] @@ -16,17 +18,122 @@ cdef import from "afs/ptuser.h": 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 nusers + afs_int32 count + char name[PR_MAXNAMELEN] + + struct prlistentries: + afs_int32 flags + afs_int32 id + afs_int32 owner + afs_int32 creator + afs_int32 ngroups + afs_int32 nusers + afs_int32 count + char name[PR_MAXNAMELEN] + + struct prentries: + unsigned int prentries_len + prlistentries *prentries_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 *) + 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 *) + int ubik_PR_SetMax(ubik_client *, afs_int32, afs_int32, afs_int32) + int ubik_PR_ListEntries(ubik_client *, afs_int32, afs_int32, afs_int32, prentries *, afs_int32 *) + int ubik_PR_SetFieldsEntry(ubik_client *, afs_int32, afs_int32, afs_int32, afs_int32, afs_int32, afs_int32, afs_int32, afs_int32) + +cdef import from "afs/pterror.h": + enum: + PRNOENT + +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 nusers + cdef public afs_int32 count + cdef public object name + + def __repr__(self): + if self.name != '': + return '' % self.name + else: + return '' % self.id + +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.nusers = c_entry.nusers + p_entry.count = c_entry.count + p_entry.name = c_entry.name + 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.nusers = p_entry.nusers + c_entry.count = p_entry.count + strncpy(c_entry.name, p_entry.name, sizeof(c_entry.name)) + 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 + cdef readonly object cell def __cinit__(self, cell=None, sec=1): cdef afs_int32 code @@ -39,6 +146,8 @@ cdef class PTS: cdef rx_connection *serverconns[MAXSERVERS] cdef int i + initialize_PT_error_table() + if cell is None: c_cell = NULL else: @@ -56,8 +165,9 @@ cdef class PTS: "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)) + pyafs_error(code) + + self.cell = info.name if sec > 0: strncpy(prin.cell, info.name, sizeof(prin.cell)) @@ -68,7 +178,7 @@ cdef class PTS: 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)) + pyafs_error(code) sec = 0 else: if sec == 3: @@ -93,8 +203,7 @@ cdef class PTS: 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)) + pyafs_error(code) code = rxs_Release(sc) @@ -102,10 +211,24 @@ cdef class PTS: ubik_ClientDestroy(self.client) rx_Finalize() - def NameToId(self, name): + def _NameOrId(self, ident): + """ + Given an identifier, convert it to a PTS ID by looking up the + name if it's a string, or otherwise just converting it to an + integer. + """ + if isinstance(ident, (str, unicode)): + return self._NameToId(ident) + else: + return int(ident) + + def _NameToId(self, name): + """ + Converts a user or group to an AFS ID. + """ cdef namelist lnames cdef idlist lids - cdef afs_int32 code, id + cdef afs_int32 code, id = ANONYMOUSID name = name.lower() lids.idlist_len = 0 @@ -117,11 +240,15 @@ cdef class PTS: if lids.idlist_val is not NULL: id = lids.idlist_val[0] free(lids.idlist_val) - if code != 0: - raise Exception("Failed to lookup PTS name: %s" % afs_error_message(code)) + if id == ANONYMOUSID: + code = PRNOENT + pyafs_error(code) return id - def IdToName(self, 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 @@ -138,11 +265,16 @@ cdef class PTS: free(lnames.namelist_val) if lids.idlist_val is not NULL: free(lids.idlist_val) - if code != 0: - raise Exception("Failed to lookup PTS ID: %s" % afs_error_message(code)) + if name == str(id): + code = PRNOENT + pyafs_error(code) return name - def CreateUser(self, name, id=None): + 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() @@ -155,17 +287,18 @@ cdef class PTS: 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)) + pyafs_error(code) return cid - def CreateGroup(self, name, owner, id=None): + 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 oid == ANONYMOUSID: - raise Exception("Error creating group: owner does not exist") + oid = self._NameOrId(owner) if id is not None: cid = id @@ -173,6 +306,246 @@ cdef class PTS: 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)) + pyafs_error(code) return cid + + def _Delete(self, ident): + """ + Delete the protection database entry with the provided + identifier. + """ + cdef afs_int32 code + cdef afs_int32 id = self._NameOrId(ident) + + code = ubik_PR_Delete(self.client, 0, id) + pyafs_error(code) + + def _AddToGroup(self, user, group): + """ + Add the given user to the given group. + """ + cdef afs_int32 code + cdef afs_int32 uid = self._NameOrId(user), gid = self._NameOrId(group) + + code = ubik_PR_AddToGroup(self.client, 0, uid, gid) + pyafs_error(code) + + def _RemoveFromGroup(self, user, group): + """ + Remove the given user from the given group. + """ + cdef afs_int32 code + cdef afs_int32 uid = self._NameOrId(user), gid = self._NameOrId(group) + + code = ubik_PR_RemoveFromGroup(self.client, 0, uid, gid) + pyafs_error(code) + + def _ListMembers(self, ident): + """ + Get the membership of an entity. + + If id is a group, this returns the users that are in that + group. + + If id is a user, 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 = [] + + cdef afs_int32 id = self._NameOrId(ident) + + 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) + + pyafs_error(code) + + return members + + def _ListOwned(self, owner): + """ + Get all groups owned by an entity. + """ + cdef afs_int32 code, over + cdef prlist alist + cdef int i + cdef object owned = [] + + cdef afs_int32 oid = self._NameOrId(owner) + + 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) + + pyafs_error(code) + + return owned + + def _ListEntry(self, ident): + """ + Load a PTEntry instance with information about the provided + entity. + """ + cdef afs_int32 code + cdef prcheckentry centry + cdef object entry = PTEntry() + + cdef afs_int32 id = self._NameOrId(ident) + + code = ubik_PR_ListEntry(self.client, 0, id, ¢ry) + pyafs_error(code) + + _ptentry_from_c(entry, ¢ry) + return entry + + def _ChangeEntry(self, ident, 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 + + cdef afs_int32 id = self._NameOrId(ident) + + 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) + pyafs_error(code) + + def _IsAMemberOf(self, user, group): + """ + Return True if the given user is a member of the given group. + """ + cdef afs_int32 code + cdef afs_int32 flag + + cdef afs_int32 uid = self._NameOrId(user), gid = self._NameOrId(group) + + code = ubik_PR_IsAMemberOf(self.client, 0, uid, gid, &flag) + pyafs_error(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) + pyafs_error(code) + + return (uid, gid) + + def _SetMaxUserId(self, id): + """ + Set the maximum currently assigned user ID (the next + automatically assigned UID will be id + 1) + """ + cdef afs_int32 code + + code = ubik_PR_SetMax(self.client, 0, id, 0) + pyafs_error(code) + + def _SetMaxGroupId(self, id): + """ + Set the maximum currently assigned user ID (the next + automatically assigned UID will be id + 1) + """ + cdef afs_int32 code + + code = ubik_PR_SetMax(self.client, 0, id, PRGRP) + pyafs_error(code) + + def _ListEntries(self, users=None, groups=None): + """ + Return a list of PTEntry instances representing all entries in + the PRDB. + + Returns just users by default, but can return just users, just + groups, or both. + """ + cdef afs_int32 code + cdef afs_int32 flag = 0, startindex = 0, nentries, nextstartindex + cdef prentries centries + cdef unsigned int i + + cdef object entries = [] + + if groups is None or users is True: + flag |= PRUSERS + if groups: + flag |= PRGROUPS + + while startindex != -1: + centries.prentries_val = NULL + centries.prentries_len = 0 + nextstartindex = -1 + + code = ubik_PR_ListEntries(self.client, 0, flag, startindex, ¢ries, &nextstartindex) + if centries.prentries_val is not NULL: + for i in range(centries.prentries_len): + e = PTEntry() + _ptentry_from_c(e, ¢ries.prentries_val[i]) + entries.append(e) + free(centries.prentries_val) + pyafs_error(code) + + startindex = nextstartindex + + return entries + + def _SetFields(self, ident, access=None, groups=None, users=None): + """ + Update the fields for an entry. + + Valid fields are the privacy flags (access), the group quota + (groups), or the "foreign user quota" (users), which doesn't + actually seem to do anything, but is included for + completeness. + """ + cdef afs_int32 code + cdef afs_int32 mask = 0, flags = 0, nusers = 0, ngroups = 0 + + cdef afs_int32 id = self._NameOrId(ident) + + if access is not None: + flags = access + mask |= PR_SF_ALLBITS + if groups is not None: + ngroups = groups + mask |= PR_SF_NGROUPS + if users is not None: + nusers = users + mask |= PR_SF_NGROUPS + + code = ubik_PR_SetFieldsEntry(self.client, 0, id, mask, flags, ngroups, nusers, 0, 0) + pyafs_error(code)