from afs cimport *
from afs import pyafs_error
+import re
cdef import from "afs/ptuser.h":
enum:
cdef import from "afs/pterror.h":
enum:
PRNOENT
- PRTOOMANY
+
+cdef import 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
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
- 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
code = afsconf_GetCellInfo(cdir, c_cell, "afsprot", &info)
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))
prin.instance[0] = 0
name if it's a string, or otherwise just converting it to an
integer.
"""
- if isinstance(ident, (str, unicode)):
- return self.NameToId(ident)
+ if isinstance(ident, basestring):
+ return self._NameToId(ident)
else:
return int(ident)
cdef afs_int32 code, cid
name = name[:PR_MAXNAMELEN].lower()
- oid = self.NameOrId(owner)
+ oid = self._NameOrId(owner)
if id is not None:
cid = id
identifier.
"""
cdef afs_int32 code
- cdef afs_int32 id = self.NameOrId(ident)
+ cdef afs_int32 id = self._NameOrId(ident)
code = ubik_PR_Delete(self.client, 0, id)
pyafs_error(code)
Add the given user to the given group.
"""
cdef afs_int32 code
- cdef afs_int32 uid = self.NameOrId(user), gid = self.NameOrId(group)
+ cdef afs_int32 uid = self._NameOrId(user), gid = self._NameOrId(group)
code = ubik_PR_AddToGroup(self.client, 0, uid, gid)
pyafs_error(code)
Remove the given user from the given group.
"""
cdef afs_int32 code
- cdef afs_int32 uid = self.NameOrId(user), gid = self.NameOrId(group)
+ cdef afs_int32 uid = self._NameOrId(user), gid = self._NameOrId(group)
code = ubik_PR_RemoveFromGroup(self.client, 0, uid, gid)
pyafs_error(code)
cdef int i
cdef object members = []
- cdef afs_int32 id = self.NameOrId(ident)
+ cdef afs_int32 id = self._NameOrId(ident)
alist.prlist_len = 0
alist.prlist_val = NULL
members.append(alist.prlist_val[i])
free(alist.prlist_val)
- if over:
- code = PRTOOMANY
pyafs_error(code)
return members
cdef int i
cdef object owned = []
- cdef afs_int32 oid = self.NameOrId(owner)
+ cdef afs_int32 oid = self._NameOrId(owner)
alist.prlist_len = 0
alist.prlist_val = NULL
owned.append(alist.prlist_val[i])
free(alist.prlist_val)
- if over:
- code = PRTOOMANY
pyafs_error(code)
return owned
cdef prcheckentry centry
cdef object entry = PTEntry()
- cdef afs_int32 id = self.NameOrId(ident)
+ cdef afs_int32 id = self._NameOrId(ident)
code = ubik_PR_ListEntry(self.client, 0, id, ¢ry)
pyafs_error(code)
cdef afs_int32 c_newid = 0, c_newoid = 0
cdef char * c_newname
- cdef afs_int32 id = self.NameOrId(ident)
+ cdef afs_int32 id = self._NameOrId(ident)
if newname is None:
- newname = self.IdToName(id)
+ newname = self._IdToName(id)
c_newname = newname
if newid is not None:
c_newid = newid
cdef afs_int32 code
cdef afs_int32 flag
- cdef afs_int32 uid = self.NameOrId(user), gid = self.NameOrId(group)
+ cdef afs_int32 uid = self._NameOrId(user), gid = self._NameOrId(group)
code = ubik_PR_IsAMemberOf(self.client, 0, uid, gid, &flag)
pyafs_error(code)
cdef afs_int32 code
cdef afs_int32 mask = 0, flags = 0, nusers = 0, ngroups = 0
- cdef afs_int32 id = self.NameOrId(ident)
+ cdef afs_int32 id = self._NameOrId(ident)
if access is not None:
flags = access
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