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/* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* 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 2
* of the License, or (at your option) any later version. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
Customized Blender import module, Sandbox model (TODO)
TODO for Sandbox:
- only allow builtin modules to be imported
- only allow file read/write from certain directories
- alternative: override file read/write with popup requester
main routine:
init_ourImport();
*/
#include "DNA_text_types.h"
#include "Python.h"
#include "import.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_library.h"
#include "BKE_text.h"
#include "BLI_blenlib.h" // mallocs
#include "BPY_macros.h"
#include "BPY_main.h"
#include "b_import.h"
/* ---------------------------------------------------------------------------- */
PyObject *importText(char *name)
{
Text *text;
char txtname[IDNAME];
char *buf = NULL;
// TODO debug for too long names !
strncpy(txtname, name, IDNAME-4);
strcat(txtname, ".py");
text = (Text*) getGlobal()->main->text.first;
while(text)
{
if (STREQ(getName(text), txtname))
break;
text = text->id.next;
}
if (!text) {
return NULL;
}
if (!text->compiled) {
buf = txt_to_buf(text);
text->compiled = Py_CompileString(buf, getName(text), Py_file_input);
MEM_freeN(buf);
if (PyErr_Occurred())
{
PyErr_Print();
BPY_free_compiled_text(text);
return NULL;
}
}
BPY_debug(("import from TextBuffer: %s\n", txtname));
return PyImport_ExecCodeModule(name, text->compiled);
}
PyObject *blender_import(PyObject *self, PyObject *args)
{
PyObject *exception, *err, *tb;
char *name;
PyObject *globals = NULL, *locals = NULL, *fromlist = NULL;
PyObject *m;
#ifdef PY_SANDBOXTEST
PyObject *l, *n;
#endif
if (!PyArg_ParseTuple(args, "s|OOO:bimport",
&name, &globals, &locals, &fromlist))
return NULL;
#ifdef PY_SANDBOXTEST
/* check for builtin modules */
m = PyImport_AddModule("sys");
l = PyObject_GetAttrString(m, "builtin_module_names");
n = PyString_FromString(name);
if (PySequence_Contains(l, n)) {
Py_DECREF(l);
m = PyImport_ImportModuleEx(name, globals, locals, fromlist);
return m;
} else {
/* TODO check for external python toolbox modules */
PyErr_Format(PyExc_ImportError,
"Import of external Module %.40s not allowed.\n\
Please disable security in the UserButtons", name);
Py_DECREF(l);
return NULL;
}
#else
m = PyImport_ImportModuleEx(name, globals, locals, fromlist);
if (m)
return m;
else
PyErr_Fetch(&exception, &err, &tb); // restore exception for probable later use
m = importText(name);
if (m) { // found module, ignore above exception
PyErr_Clear();
Py_XDECREF(exception); Py_XDECREF(err); Py_XDECREF(tb);
printf("imported from text buffer..\n");
} else {
PyErr_Restore(exception, err, tb);
}
return m;
#endif
}
static PyMethodDef bimport[] = {
{ "blimport", blender_import, METH_VARARGS,
"our own import"}
};
/*
PyObject *override_method(PyObject *module, char *methname, PyMethodDef *newcfunc)
{
PyObject *d;
PyObject *old;
PyObject *pycfunc;
d = PyModule_GetDict(module);
old = PyDict_GetItemString(module, methname);
if (!old)
return NULL;
pycfunc = PyCFunction_New(newcfunc, NULL);
PyDict_SetItemString(d, methname, pycfunc);
return old;
}
*/
/* this overrides the built in __import__ function
with our customized importer */
void init_ourImport(void)
{
PyObject *m, *d;
PyObject *import = PyCFunction_New(bimport, NULL);
m = PyImport_AddModule("__builtin__");
d = PyModule_GetDict(m);
PyDict_SetItemString(d, "__import__", import);
}
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