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s4: add python bindings for wrap_(s|g)etxattr

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This commit is contained in:
Matthieu Patou
2009-11-09 20:53:34 +03:00
committed by Andrew Bartlett
parent 45465cb7da
commit c80ecd9964
5 changed files with 297 additions and 2 deletions
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21
source4/scripting/python/config.mk
View File

@ -23,6 +23,27 @@ python_glue_OBJ_FILES = $(pyscriptsrcdir)/pyglue.o
$(python_glue_OBJ_FILES): CFLAGS+=-I$(ldbsrcdir)
[PYTHON::python_xattr_native]
LIBRARY_REALNAME = samba/xattr_native.$(SHLIBEXT)
PRIVATE_DEPENDENCIES = LIBNDR LIBLDB SAMDB CREDENTIALS python_dcerpc_security pyparam_util WRAP_XATTR
python_xattr_native_OBJ_FILES = $(pyscriptsrcdir)/pyxattr_native.o
$(python_xattr_native_OBJ_FILES): CFLAGS+=-I$(ldbsrcdir)
#ntvfs_common pvfs_acl
#$(ntvfs_posix_OBJ_FILES)
[PYTHON::python_xattr_tdb]
LIBRARY_REALNAME = samba/xattr_tdb.$(SHLIBEXT)
PRIVATE_DEPENDENCIES = LIBNDR LIBLDB python_dcerpc_security pyparam_util share
#dcerpc_server
python_xattr_tdb_OBJ_FILES = $(pyscriptsrcdir)/pyxattr_tdb.o $(ntvfssrcdir)/posix/xattr_tdb.o
#{$(ntvfssrcdir)/ntvfs_interface.o
#$(ntvfs_posix_OBJ_FILES)
$(python_xattr_tdb_OBJ_FILES): CFLAGS+=-I$(ldbsrcdir)
_PY_FILES = $(shell find $(pyscriptsrcdir)/samba ../lib/subunit/python -name "*.py")
$(eval $(foreach pyfile, $(_PY_FILES),$(call python_py_module_template,$(patsubst $(pyscriptsrcdir)/%,%,$(subst ../lib/subunit/python,,$(pyfile))),$(pyfile))))

4
source4/scripting/python/pyglue.c
View File

@ -54,8 +54,8 @@ static void PyErr_SetLdbError(PyObject *error, int ret, struct ldb_context *ldb_
return; /* Python exception should already be set, just keep that */
PyErr_SetObject(error,
Py_BuildValue(discard_const_p(char, "(i,s)"), ret,
ldb_ctx == NULL?ldb_strerror(ret):ldb_errstring(ldb_ctx)));
Py_BuildValue(discard_const_p(char, "(i,s)"), ret,
ldb_ctx == NULL?ldb_strerror(ret):ldb_errstring(ldb_ctx)));
}
static PyObject *py_ldb_get_exception(void)

130
source4/scripting/python/pyxattr_native.c Normal file
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@ -0,0 +1,130 @@
/*
Unix SMB/CIFS implementation. Xattr manipulation bindings.
Copyright (C) Matthieu Patou <mat@matws.net> 2009
Base on work of pyglue.c by Jelmer Vernooij <jelmer@samba.org> 2007 and
Matthias Dieter Wallnöfer 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include "version.h"
#include "includes.h"
#include "librpc/ndr/libndr.h"
#include "lib/util/wrap_xattr.h"
#ifndef Py_RETURN_NONE
#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
#endif
static PyObject *py_is_xattr_supported(PyObject *self)
{
#if !defined(HAVE_XATTR_SUPPORT)
return Py_False;
#else
return Py_True;
#endif
}
static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
{
char *filename, *attribute;
int ret = 0;
int blobsize;
DATA_BLOB blob;
if (!PyArg_ParseTuple(args, "sss#", &filename,&attribute,&blob.data,&blobsize))
return NULL;
blob.length = blobsize;
ret = wrap_setxattr(filename,attribute,blob.data,blob.length,0);
if( ret < 0 ) {
if (errno == ENOTSUP) {
PyErr_SetString(PyExc_IOError, strerror(errno));
} else {
PyErr_SetString(PyExc_TypeError, strerror(errno));
}
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
{
char *filename, *attribute;
int len;
TALLOC_CTX *mem_ctx;
uint8_t *buf;
PyObject *ret;
if (!PyArg_ParseTuple(args, "ss", &filename,&attribute))
return NULL;
mem_ctx = talloc_new(NULL);
len = wrap_getxattr(filename,attribute,NULL,0);
if( len < 0 ) {
if (errno == ENOTSUP) {
PyErr_SetString(PyExc_IOError, strerror(errno));
} else {
PyErr_SetString(PyExc_TypeError, strerror(errno));
}
return NULL;
}
/* check length ... */
buf = talloc_zero_array(mem_ctx, uint8_t, len);
len = wrap_getxattr(filename,attribute,buf,len);
if( len < 0 ) {
if (errno == ENOTSUP) {
PyErr_SetString(PyExc_IOError, strerror(errno));
} else {
PyErr_SetString(PyExc_TypeError, strerror(errno));
}
return NULL;
}
ret = PyString_FromStringAndSize(buf,len);
talloc_free(buf);
return ret;
}
static PyMethodDef py_xattr_methods[] = {
{ "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
"wrap_getxattr(filename,attribute) -> blob\n"
"Retreive given attribute on the given file." },
{ "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
"wrap_setxattr(filename,attribute,value)\n"
"Set the given attribute to the given value on the given file." },
{ "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
"Return true if xattr are supported on this system\n"},
{ NULL }
};
void initxattr_native(void)
{
PyObject *m;
m = Py_InitModule3("xattr_native", py_xattr_methods,
"Python bindings for xattr manipulation.");
if (m == NULL)
return;
PyModule_AddObject(m, "version", PyString_FromString(SAMBA_VERSION_STRING));
/* one of the most annoying things about python scripts is
that they don't die when you hit control-C. This fixes that
sillyness. As we do all database operations using
transactions, this is also safe. In fact, not dying
immediately is unsafe as we could end up treating the
control-C exception as a different error and try to modify
as database incorrectly
*/
signal(SIGINT, SIG_DFL);
}

133
source4/scripting/python/pyxattr_tdb.c Normal file
View File

@ -0,0 +1,133 @@
/*
Unix SMB/CIFS implementation. Xattr manipulation bindings.
Copyright (C) Matthieu Patou <mat@matws.net> 2009-2010
Base on work of pyglue.c by Jelmer Vernooij <jelmer@samba.org> 2007 and
Matthias Dieter Wallnöfer 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include "version.h"
#include "includes.h"
#include "../tdb/include/tdb.h"
#include "tdb_wrap.h"
#include "librpc/ndr/libndr.h"
#include "lib/util/wrap_xattr.h"
#include "ntvfs/posix/vfs_posix.h"
#ifndef Py_RETURN_NONE
#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
#endif
static PyObject *py_is_xattr_supported(PyObject *self)
{
/*#if !defined(HAVE_XATTR_SUPPORT)
return Py_False;
#else
return Py_True;
#endif*/
return Py_True;
}
static PyObject *py_wrap_setxattr(PyObject *self, PyObject *args)
{
char *filename, *attribute, *tdbname;
DATA_BLOB blob;
int blobsize;
NTSTATUS status;
TALLOC_CTX *mem_ctx;
struct tdb_wrap *eadb;
if (!PyArg_ParseTuple(args, "ssss#", &tdbname,&filename,&attribute,&blob.data,&blobsize))
return NULL;
blob.length = blobsize;
mem_ctx = talloc_new(NULL);
eadb = tdb_wrap_open(mem_ctx, tdbname, 50000,
TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
if (eadb == NULL) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
} status = push_xattr_blob_tdb_raw(eadb,mem_ctx,attribute,filename,-1,&blob);
if( !NT_STATUS_IS_OK(status) ) {
PyErr_SetString(PyExc_TypeError, strerror(errno));
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *py_wrap_getxattr(PyObject *self, PyObject *args)
{
char *filename, *attribute, *tdbname;
TALLOC_CTX *mem_ctx;
DATA_BLOB blob;
PyObject *ret;
NTSTATUS status;
struct tdb_wrap *eadb = NULL;
if (!PyArg_ParseTuple(args, "sss", &tdbname,&filename,&attribute))
return NULL;
mem_ctx = talloc_new(NULL);
eadb = tdb_wrap_open(mem_ctx, tdbname, 50000,
TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
if (eadb == NULL) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
status = pull_xattr_blob_tdb_raw(eadb,mem_ctx,attribute,filename,-1,100,&blob);
if( !NT_STATUS_IS_OK(status) || blob.length < 0 ) {
PyErr_SetString(PyExc_TypeError, get_friendly_nt_error_msg(status));
return NULL;
}
ret = PyString_FromStringAndSize(blob.data,blob.length);
return ret;
}
static PyMethodDef py_xattr_methods[] = {
{ "wrap_getxattr", (PyCFunction)py_wrap_getxattr, METH_VARARGS,
"wrap_getxattr(filename,attribute) -> blob\n"
"Retreive given attribute on the given file." },
{ "wrap_setxattr", (PyCFunction)py_wrap_setxattr, METH_VARARGS,
"wrap_setxattr(filename,attribute,value)\n"
"Set the given attribute to the given value on the given file." },
{ "is_xattr_supported", (PyCFunction)py_is_xattr_supported, METH_NOARGS,
"Return true if xattr backed by tdb are supported on this system\n"},
{ NULL }
};
void initxattr_tdb(void)
{
PyObject *m;
m = Py_InitModule3("xattr_tdb", py_xattr_methods,
"Python bindings for xattr manipulation.");
if (m == NULL)
return;
PyModule_AddObject(m, "version", PyString_FromString(SAMBA_VERSION_STRING));
/* one of the most annoying things about python scripts is
that they don't die when you hit control-C. This fixes that
sillyness. As we do all database operations using
transactions, this is also safe. In fact, not dying
immediately is unsafe as we could end up treating the
control-C exception as a different error and try to modify
as database incorrectly
*/
signal(SIGINT, SIG_DFL);
}