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_compat.h"
  24 #include "lib/util/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 void initxattr_tdb(void);
  31
  32 static PyObject *py_is_xattr_supported(PyObject *self)
  33 {
  34         return Py_True;
  35 }
  36
  37 static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
  38 {
  39         char *filename, *attribute, *tdbname;
  40         DATA_BLOB blob;
  41         int blobsize;
  42         NTSTATUS status;
  43         TALLOC_CTX *mem_ctx;
  44         struct tdb_wrap *eadb;
  45
  46         if (!PyArg_ParseTuple(args, "ssss#", &tdbname, &filename, &attribute,
  47                                                   &blob.data, &blobsize))
  48                 return NULL;
  49
  50         blob.length = blobsize;
  51         mem_ctx = talloc_new(NULL);
  52         eadb = tdb_wrap_open(mem_ctx, tdbname, 50000,
  53                                 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
  54
  55         if (eadb == NULL) {
  56                 PyErr_SetFromErrno(PyExc_IOError);
  57                 talloc_free(mem_ctx);
  58                 return NULL;
  59         }
  60         status = push_xattr_blob_tdb_raw(eadb, mem_ctx, attribute, filename, -1,
  61                                                                          &blob);
  62         if (!NT_STATUS_IS_OK(status)) {
  63                 PyErr_SetNTSTATUS(status);
  64                 talloc_free(mem_ctx);
  65                 return NULL;
  66         }
  67         talloc_free(mem_ctx);
  68         Py_RETURN_NONE;
  69 }
  70
  71 static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
  72 {
  73         char *filename, *attribute, *tdbname;
  74         TALLOC_CTX *mem_ctx;
  75         DATA_BLOB blob;
  76         PyObject *ret;
  77         NTSTATUS status;
  78         struct tdb_wrap *eadb = NULL;
  79
  80         if (!PyArg_ParseTuple(args, "sss", &tdbname, &filename, &attribute))
  81                 return NULL;
  82
  83         mem_ctx = talloc_new(NULL);
  84         eadb = tdb_wrap_open(mem_ctx, tdbname, 50000,
  85                                 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
  86         if (eadb == NULL) {
  87                 PyErr_SetFromErrno(PyExc_IOError);
  88                 talloc_free(mem_ctx);
  89                 return NULL;
  90         }
  91         status = pull_xattr_blob_tdb_raw(eadb, mem_ctx, attribute, filename,
  92                                                                          -1, 100, &blob);
  93         if (!NT_STATUS_IS_OK(status) || blob.length < 0) {
  94                 PyErr_SetNTSTATUS(status);
  95                 talloc_free(mem_ctx);
  96                 return NULL;
  97         }
  98         ret = PyString_FromStringAndSize((char *)blob.data, blob.length);
  99         talloc_free(mem_ctx);
 100         return ret;
 101 }
 102
 103 static PyMethodDef py_xattr_methods[] = {
 104         { "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
 105                 "wrap_getxattr(filename,attribute) -> blob\n"
 106                 "Retreive given attribute on the given file." },
 107         { "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
 108                 "wrap_setxattr(filename,attribute,value)\n"
 109                 "Set the given attribute to the given value on the given file." },
 110         { "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
 111                 "Return true if xattr are supported on this system\n"},
 112         { NULL }
 113 };
 114
 115 void initxattr_tdb(void)
 116 {
 117         PyObject *m;
 118
 119         m = Py_InitModule3("xattr_tdb", py_xattr_methods,
 120                            "Python bindings for xattr manipulation.");
 121         if (m == NULL)
 122                 return;
 123 }
 124