source4/ntvfs/posix/python/pyxattr_tdb.c

   1 /*
   2    Unix SMB/CIFS implementation. Xattr manipulation bindings.
   3    Copyright (C) Matthieu Patou <mat@matws.net> 2009-2010
   4    Base on work of pyglue.c by Jelmer Vernooij <jelmer@samba.org> 2007 and
   5     Matthias Dieter Wallnöfer 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include <Python.h>
  22 #include "includes.h"
  23 #include <tdb.h>
  24 #include "tdb_wrap.h"
  25 #include "librpc/ndr/libndr.h"
  26 #include "lib/util/wrap_xattr.h"
  27 #include "ntvfs/posix/vfs_posix.h"
  28 #include "libcli/util/pyerrors.h"
  29
  30 static PyObject *py_is_xattr_supported(PyObject *self)
  31 {
  32         return Py_True;
  33 }
  34
  35 static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
  36 {
  37         char *filename, *attribute, *tdbname;
  38         DATA_BLOB blob;
  39         int blobsize;
  40         NTSTATUS status;
  41         TALLOC_CTX *mem_ctx;
  42         struct tdb_wrap *eadb;
  43
  44         if (!PyArg_ParseTuple(args, "ssss#", &tdbname, &filename, &attribute,
  45                                                   &blob.data, &blobsize))
  46                 return NULL;
  47
  48         blob.length = blobsize;
  49         mem_ctx = talloc_new(NULL);
  50         eadb = tdb_wrap_open(mem_ctx, tdbname, 50000,
  51                                 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
  52
  53         if (eadb == NULL) {
  54                 PyErr_SetFromErrno(PyExc_IOError);
  55                 talloc_free(mem_ctx);
  56                 return NULL;
  57         }
  58         status = push_xattr_blob_tdb_raw(eadb, mem_ctx, attribute, filename, -1,
  59                                                                          &blob);
  60         if (!NT_STATUS_IS_OK(status)) {
  61                 PyErr_FromNTSTATUS(status);
  62                 talloc_free(mem_ctx);
  63                 return NULL;
  64         }
  65         talloc_free(mem_ctx);
  66         Py_RETURN_NONE;
  67 }
  68
  69 static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
  70 {
  71         char *filename, *attribute, *tdbname;
  72         TALLOC_CTX *mem_ctx;
  73         DATA_BLOB blob;
  74         PyObject *ret;
  75         NTSTATUS status;
  76         struct tdb_wrap *eadb = NULL;
  77
  78         if (!PyArg_ParseTuple(args, "sss", &tdbname, &filename, &attribute))
  79                 return NULL;
  80
  81         mem_ctx = talloc_new(NULL);
  82         eadb = tdb_wrap_open(mem_ctx, tdbname, 50000,
  83                                 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
  84         if (eadb == NULL) {
  85                 PyErr_SetFromErrno(PyExc_IOError);
  86                 talloc_free(mem_ctx);
  87                 return NULL;
  88         }
  89         status = pull_xattr_blob_tdb_raw(eadb, mem_ctx, attribute, filename,
  90                                                                          -1, 100, &blob);
  91         if (!NT_STATUS_IS_OK(status) || blob.length < 0) {
  92                 PyErr_FromNTSTATUS(status);
  93                 talloc_free(mem_ctx);
  94                 return NULL;
  95         }
  96         ret = PyString_FromStringAndSize((char *)blob.data, blob.length);
  97         talloc_free(mem_ctx);
  98         return ret;
  99 }
 100
 101 static PyMethodDef py_xattr_methods[] = {
 102         { "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
 103                 "wrap_getxattr(filename,attribute) -> blob\n"
 104                 "Retreive given attribute on the given file." },
 105         { "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
 106                 "wrap_setxattr(filename,attribute,value)\n"
 107                 "Set the given attribute to the given value on the given file." },
 108         { "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
 109                 "Return true if xattr are supported on this system\n"},
 110         { NULL }
 111 };
 112
 113 void initxattr_tdb(void)
 114 {
 115         PyObject *m;
 116
 117         m = Py_InitModule3("xattr_tdb", py_xattr_methods,
 118                            "Python bindings for xattr manipulation.");
 119         if (m == NULL)
 120                 return;
 121 }
 122