Line data    Source code

       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 "lib/replace/system/python.h"
      22             : #include "python/py3compat.h"
      23             : #include "includes.h"
      24             : #include "system/filesys.h"
      25             : #include <tdb.h>
      26             : #include "lib/tdb_wrap/tdb_wrap.h"
      27             : #include "librpc/ndr/libndr.h"
      28             : #include "ntvfs/posix/posix_eadb.h"
      29             : #include "libcli/util/pyerrors.h"
      30             : #include "param/pyparam.h"
      31             : 
      32           0 : static PyObject *py_is_xattr_supported(PyObject *self,
      33             :                         PyObject *Py_UNUSED(ignored))
      34             : {
      35           0 :         Py_RETURN_TRUE;
      36             : }
      37             : 
      38         970 : static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
      39             : {
      40         319 :         char *filename, *attribute, *tdbname;
      41         319 :         DATA_BLOB blob;
      42         319 :         Py_ssize_t blobsize;
      43         319 :         NTSTATUS status;
      44         319 :         TALLOC_CTX *mem_ctx;
      45         319 :         struct tdb_wrap *eadb;
      46             : 
      47         970 :         if (!PyArg_ParseTuple(args, "sss"PYARG_BYTES_LEN, &tdbname, &filename, &attribute,
      48             :                                                   &blob.data, &blobsize))
      49           0 :                 return NULL;
      50             : 
      51         970 :         blob.length = blobsize;
      52         970 :         mem_ctx = talloc_new(NULL);
      53         970 :         eadb = tdb_wrap_open(
      54             :                 mem_ctx, tdbname, 50000,
      55             :                 lpcfg_tdb_flags(py_default_loadparm_context(mem_ctx),
      56             :                                 TDB_DEFAULT),
      57             :                 O_RDWR|O_CREAT, 0600);
      58             : 
      59         970 :         if (eadb == NULL) {
      60           0 :                 PyErr_SetFromErrno(PyExc_IOError);
      61           0 :                 talloc_free(mem_ctx);
      62           0 :                 return NULL;
      63             :         }
      64         970 :         status = push_xattr_blob_tdb_raw(eadb, attribute, filename, -1,
      65             :                                          &blob);
      66         970 :         if (!NT_STATUS_IS_OK(status)) {
      67           0 :                 PyErr_SetNTSTATUS(status);
      68           0 :                 talloc_free(mem_ctx);
      69           0 :                 return NULL;
      70             :         }
      71         970 :         talloc_free(mem_ctx);
      72         970 :         Py_RETURN_NONE;
      73             : }
      74             : 
      75           2 : static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
      76             : {
      77           2 :         char *filename, *attribute, *tdbname;
      78           2 :         TALLOC_CTX *mem_ctx;
      79           2 :         DATA_BLOB blob;
      80           2 :         PyObject *ret;
      81           2 :         NTSTATUS status;
      82           2 :         struct tdb_wrap *eadb = NULL;
      83             : 
      84           2 :         if (!PyArg_ParseTuple(args, "sss", &tdbname, &filename, &attribute))
      85           0 :                 return NULL;
      86             : 
      87           2 :         mem_ctx = talloc_new(NULL);
      88           2 :         eadb = tdb_wrap_open(
      89             :                 mem_ctx, tdbname, 50000,
      90             :                 lpcfg_tdb_flags(py_default_loadparm_context(mem_ctx),
      91             :                                 TDB_DEFAULT),
      92             :                 O_RDWR|O_CREAT, 0600);
      93           2 :         if (eadb == NULL) {
      94           0 :                 PyErr_SetFromErrno(PyExc_IOError);
      95           0 :                 talloc_free(mem_ctx);
      96           0 :                 return NULL;
      97             :         }
      98           2 :         status = pull_xattr_blob_tdb_raw(eadb, mem_ctx, attribute, filename,
      99             :                                                                          -1, 100, &blob);
     100           2 :         if (!NT_STATUS_IS_OK(status)) {
     101           0 :                 PyErr_SetNTSTATUS(status);
     102           0 :                 talloc_free(mem_ctx);
     103           0 :                 return NULL;
     104             :         }
     105           2 :         ret = Py_BuildValue(PYARG_BYTES_LEN, blob.data, blob.length);
     106           2 :         talloc_free(mem_ctx);
     107           2 :         return ret;
     108             : }
     109             : 
     110             : static PyMethodDef py_posix_eadb_methods[] = {
     111             :         { "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
     112             :                 "wrap_getxattr(filename,attribute) -> blob\n"
     113             :                 "Retrieve given attribute on the given file." },
     114             :         { "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
     115             :                 "wrap_setxattr(filename,attribute,value)\n"
     116             :                 "Set the given attribute to the given value on the given file." },
     117             :         { "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
     118             :                 "Return true if xattr are supported on this system\n"},
     119             :         {0}
     120             : };
     121             : 
     122             : static struct PyModuleDef moduledef = {
     123             :     PyModuleDef_HEAD_INIT,
     124             :     .m_name = "posix_eadb",
     125             :     .m_doc = "Python bindings for xattr manipulation.",
     126             :     .m_size = -1,
     127             :     .m_methods = py_posix_eadb_methods,
     128             : };
     129             : 
     130        2817 : MODULE_INIT_FUNC(posix_eadb)
     131             : {
     132          78 :         PyObject *m;
     133             : 
     134        2817 :         m = PyModule_Create(&moduledef);
     135             : 
     136        2817 :         if (m == NULL)
     137           0 :                 return NULL;
     138             : 
     139        2739 :         return m;
     140             : }