-from afs cimport *
+from afs._util cimport *
+from afs._util import pyafs_error
+import re
-cdef import from "afs/ptuser.h":
+cdef extern from "afs/ptuser.h":
enum:
PR_MAXNAMELEN
+ PRGRP
+ PRUSERS
+ PRGROUPS
+ ANONYMOUSID
+ PR_SF_ALLBITS
+ PR_SF_NGROUPS
+ PR_SF_NUSERS
ctypedef char prname[PR_MAXNAMELEN]
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 extern from "afs/pterror.h":
+ enum:
+ PRNOENT
+
+cdef extern from "krb5/krb5.h":
+ struct _krb5_context:
+ pass
+ struct krb5_principal_data:
+ pass
+
+ ctypedef _krb5_context * krb5_context
+ ctypedef krb5_principal_data * krb5_principal
+
+ ctypedef long krb5_int32
+ ctypedef krb5_int32 krb5_error_code
+ krb5_error_code krb5_init_context(krb5_context *)
+ krb5_error_code krb5_parse_name(krb5_context, char *, krb5_principal *)
+ krb5_error_code krb5_unparse_name(krb5_context, krb5_principal, char **)
+ krb5_error_code krb5_524_conv_principal(krb5_context, krb5_principal, char *, char *, char *)
+ krb5_error_code krb5_425_conv_principal(krb5_context, char *, char *, char *, krb5_principal *)
+ krb5_error_code krb5_get_host_realm(krb5_context, char *, char ***)
+ void krb5_free_host_realm(krb5_context, char **)
+ void krb5_free_principal(krb5_context, krb5_principal)
+ void krb5_free_context(krb5_context)
+
+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 '<PTEntry: %s>' % self.name
+ else:
+ return '<PTEntry: PTS ID %s>' % 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 object kname_re = re.compile(r'^([^.].*?)(?<!\\)(?:\.(.*?))?(?<!\\)@([^@]*)$')
+
+cdef object kname_parse(fullname):
+ """Parse a krb4-style principal into a name, instance, and realm."""
+ cdef object re_match = kname_re.match(fullname)
+ if not re_match:
+ return None
+ else:
+ princ = re_match.groups()
+ return tuple([re.sub(r'\\(.)', r'\1', x) if x else x for x in princ])
+
+cdef object kname_unparse(name, inst, realm):
+ """Unparse a name, instance, and realm into a single krb4
+ principal string."""
+ name = re.sub('r([.\\@])', r'\\\1', name)
+ inst = re.sub('r([.\\@])', r'\\\1', inst)
+ realm = re.sub(r'([\\@])', r'\\\1', realm)
+ if inst:
+ return '%s.%s@%s' % (name, inst, realm)
+ else:
+ return '%s@%s' % (name, realm)
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
+
+ The realm attribute is the Kerberos realm against which this cell
+ authenticates.
+ """
cdef ubik_client * client
+ cdef readonly object cell
+ cdef readonly object realm
def __cinit__(self, cell=None, sec=1):
cdef afs_int32 code
cdef afsconf_dir *cdir
cdef afsconf_cell info
+ cdef krb5_context context
+ cdef char ** hrealms = NULL
cdef char * c_cell
cdef ktc_principal prin
cdef ktc_token token
cdef rx_connection *serverconns[MAXSERVERS]
cdef int i
+ initialize_PT_error_table()
+
if cell is None:
c_cell = NULL
else:
"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)
+
+ code = krb5_init_context(&context)
+ pyafs_error(code)
+ code = krb5_get_host_realm(context, info.hostName[0], &hrealms)
+ pyafs_error(code)
+ self.realm = hrealms[0]
+ krb5_free_host_realm(context, hrealms)
+ krb5_free_context(context)
+
+ self.cell = info.name
if sec > 0:
strncpy(prin.cell, info.name, sizeof(prin.cell))
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:
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)
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, basestring):
+ 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
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
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()
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):
+ """
+ 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._NameOrId(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)
+
+ 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, <prcheckentry *>¢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)
+
+ def _AfsToKrb5(self, afs_name):
+ """Convert an AFS principal to a Kerberos v5 one."""
+ cdef krb5_context ctx = NULL
+ cdef krb5_principal princ = NULL
+ cdef krb5_error_code code = 0
+ cdef char * krb5_princ = NULL
+ cdef char *name = NULL, *inst = NULL, *realm = NULL
+ cdef object pname, pinst, prealm
+
+ if '@' in afs_name:
+ pname, prealm = afs_name.rsplit('@', 1)
+ prealm = prealm.upper()
+ krb4_name = '%s@%s' % (pname, prealm)
+ else:
+ krb4_name = '%s@%s' % (afs_name, self.realm)
+
+ pname, pinst, prealm = kname_parse(krb4_name)
+ if pname:
+ name = pname
+ if pinst:
+ inst = pinst
+ if prealm:
+ realm = prealm
+
+ code = krb5_init_context(&ctx)
+ try:
+ pyafs_error(code)
+
+ code = krb5_425_conv_principal(ctx, name, inst, realm, &princ)
+ try:
+ pyafs_error(code)
+
+ code = krb5_unparse_name(ctx, princ, &krb5_princ)
+ try:
+ pyafs_error(code)
+
+ return krb5_princ
+ finally:
+ if krb5_princ is not NULL:
+ free(krb5_princ)
+ finally:
+ if princ is not NULL:
+ krb5_free_principal(ctx, princ)
+ finally:
+ if ctx is not NULL:
+ krb5_free_context(ctx)
+
+ def _Krb5ToAfs(self, krb5_name):
+ """Convert a Kerberos v5 principal to an AFS one."""
+ cdef krb5_context ctx = NULL
+ cdef krb5_principal k5_princ = NULL
+ cdef char *k4_name, *k4_inst, *k4_realm
+ cdef object afs_princ
+ cdef object afs_name, afs_realm
+
+ k4_name = <char *>malloc(40)
+ k4_name[0] = '\0'
+ k4_inst = <char *>malloc(40)
+ k4_inst[0] = '\0'
+ k4_realm = <char *>malloc(40)
+ k4_realm[0] = '\0'
+
+ code = krb5_init_context(&ctx)
+ try:
+ pyafs_error(code)
+
+ code = krb5_parse_name(ctx, krb5_name, &k5_princ)
+ try:
+ pyafs_error(code)
+
+ code = krb5_524_conv_principal(ctx, k5_princ, k4_name, k4_inst, k4_realm)
+ pyafs_error(code)
+
+ afs_princ = kname_unparse(k4_name, k4_inst, k4_realm)
+ afs_name, afs_realm = afs_princ.rsplit('@', 1)
+
+ if k4_realm == self.realm:
+ return afs_name
+ else:
+ return '%s@%s' % (afs_name, afs_realm.lower())
+ finally:
+ if k5_princ is not NULL:
+ krb5_free_principal(ctx, k5_princ)
+ finally:
+ if ctx is not NULL:
+ krb5_free_context(ctx)
projects / invirt/packages/python-afs.git / blobdiff