[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [37575] trunk/blender: fix [#27681] Python : crash assigning a 'set' to an array
Campbell Barton
ideasman42 at gmail.com
Fri Jun 17 04:22:39 CEST 2011
Revision: 37575
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=37575
Author: campbellbarton
Date: 2011-06-17 02:22:38 +0000 (Fri, 17 Jun 2011)
Log Message:
-----------
fix [#27681] Python: crash assigning a 'set' to an array
Modified Paths:
--------------
trunk/blender/CMakeLists.txt
trunk/blender/source/blender/python/intern/bpy_rna.c
trunk/blender/source/blender/python/intern/bpy_rna_array.c
Modified: trunk/blender/CMakeLists.txt
===================================================================
--- trunk/blender/CMakeLists.txt 2011-06-17 00:39:59 UTC (rev 37574)
+++ trunk/blender/CMakeLists.txt 2011-06-17 02:22:38 UTC (rev 37575)
@@ -50,7 +50,7 @@
cmake_minimum_required(VERSION 2.8)
# this starts out unset
-set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/build_files/cmake/Modules/")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/build_files/cmake/Modules")
# quiet output for Makefiles, 'make -s' helps too
# set_property(GLOBAL PROPERTY RULE_MESSAGES OFF)
Modified: trunk/blender/source/blender/python/intern/bpy_rna.c
===================================================================
--- trunk/blender/source/blender/python/intern/bpy_rna.c 2011-06-17 00:39:59 UTC (rev 37574)
+++ trunk/blender/source/blender/python/intern/bpy_rna.c 2011-06-17 02:22:38 UTC (rev 37575)
@@ -1380,12 +1380,8 @@
if (RNA_property_array_check(ptr, prop)) {
- int ok= 1;
-
/* done getting the length */
- ok= pyrna_py_to_array(ptr, prop, data, value, error_prefix);
-
- if (!ok) {
+ if(pyrna_py_to_array(ptr, prop, data, value, error_prefix) == -1) {
return -1;
}
}
@@ -1767,8 +1763,8 @@
if (totdim > 1) {
/* char error_str[512]; */
- if (!pyrna_py_to_array_index(&self->ptr, self->prop, self->arraydim, self->arrayoffset, index, value, "")) {
- /* PyErr_SetString(PyExc_AttributeError, error_str); */
+ if (pyrna_py_to_array_index(&self->ptr, self->prop, self->arraydim, self->arrayoffset, index, value, "") == -1) {
+ /* error is set */
ret= -1;
}
}
Modified: trunk/blender/source/blender/python/intern/bpy_rna_array.c
===================================================================
--- trunk/blender/source/blender/python/intern/bpy_rna_array.c 2011-06-17 00:39:59 UTC (rev 37574)
+++ trunk/blender/source/blender/python/intern/bpy_rna_array.c 2011-06-17 02:22:38 UTC (rev 37575)
@@ -68,15 +68,19 @@
/* check that a sequence contains dimsize[dim] items */
const int seq_size= PySequence_Size(seq);
if(seq_size == -1) {
- PyErr_Format(PyExc_ValueError, "%s sequence expected at dimension %d, not %s", error_prefix, (int)dim + 1, Py_TYPE(seq)->tp_name);
- return 0;
+ PyErr_Format(PyExc_ValueError, "%s sequence expected at dimension %d, not '%s'", error_prefix, (int)dim + 1, Py_TYPE(seq)->tp_name);
+ return -1;
}
for (i= 0; i < seq_size; i++) {
PyObject *item;
int ok= 1;
item= PySequence_GetItem(seq, i);
- if (!PySequence_Check(item)) {
+ if(item == NULL) {
+ PyErr_Format(PyExc_TypeError, "%s sequence type '%s' failed to retrieve index %d", error_prefix, Py_TYPE(seq)->tp_name, i);
+ ok= 0;
+ }
+ else if (!PySequence_Check(item)) {
/* BLI_snprintf(error_str, error_str_size, "expected a sequence of %s", item_type_str); */
PyErr_Format(PyExc_TypeError, "%s expected a sequence of %s, not %s", error_prefix, item_type_str, Py_TYPE(item)->tp_name);
ok= 0;
@@ -91,39 +95,43 @@
PyErr_Format(PyExc_ValueError, "%s sequences of dimension %d should contain %d items", error_prefix, (int)dim + 1, (int)dimsize[dim + 1]);
ok= 0;
}
- else if (!validate_array_type(item, dim + 1, totdim, dimsize, check_item_type, item_type_str, error_prefix)) {
+ else if (validate_array_type(item, dim + 1, totdim, dimsize, check_item_type, item_type_str, error_prefix) == -1) {
ok= 0;
}
- Py_DECREF(item);
+ Py_XDECREF(item);
if (!ok)
- return 0;
+ return -1;
}
}
else {
/* check that items are of correct type */
const int seq_size= PySequence_Size(seq);
if(seq_size == -1) {
- PyErr_Format(PyExc_ValueError, "%s sequence expected at dimension %d, not %s", error_prefix, (int)dim + 1, Py_TYPE(seq)->tp_name);
- return 0;
+ PyErr_Format(PyExc_ValueError, "%s sequence expected at dimension %d, not '%s'", error_prefix, (int)dim + 1, Py_TYPE(seq)->tp_name);
+ return -1;
}
for (i= 0; i < seq_size; i++) {
PyObject *item= PySequence_GetItem(seq, i);
- if (!check_item_type(item)) {
+ if(item == NULL) {
+ PyErr_Format(PyExc_TypeError, "%s sequence type '%s' failed to retrieve index %d", error_prefix, Py_TYPE(seq)->tp_name, i);
+ return -1;
+ }
+ else if (!check_item_type(item)) {
Py_DECREF(item);
/* BLI_snprintf(error_str, error_str_size, "sequence items should be of type %s", item_type_str); */
PyErr_Format(PyExc_TypeError, "%s expected sequence items of type %s, not %s", error_prefix, item_type_str, Py_TYPE(item)->tp_name);
- return 0;
+ return -1;
}
Py_DECREF(item);
}
}
- return 1;
+ return 0; /* ok */
}
/* Returns the number of items in a single- or multi-dimensional sequence. */
@@ -136,8 +144,21 @@
int i;
for (i= 0; i < seq_size; i++) {
PyObject *item= PySequence_GetItem(seq, i);
- totitem += count_items(item, dim - 1);
- Py_DECREF(item);
+ if(item) {
+ const int tot= count_items(item, dim - 1);
+ Py_DECREF(item);
+ if(tot != -1) {
+ totitem += tot;
+ }
+ else {
+ totitem= -1;
+ break;
+ }
+ }
+ else {
+ totitem= -1;
+ break;
+ }
}
}
else {
@@ -156,18 +177,22 @@
totdim= RNA_property_array_dimension(ptr, prop, dimsize);
tot= count_items(rvalue, totdim - lvalue_dim);
- if ((RNA_property_flag(prop) & PROP_DYNAMIC) && lvalue_dim == 0) {
+ if(tot == -1) {
+ PyErr_Format(PyExc_ValueError, "%s %.200s.%.200s, error validating the sequence length", error_prefix, RNA_struct_identifier(ptr->type), RNA_property_identifier(prop));
+ return -1;
+ }
+ else if ((RNA_property_flag(prop) & PROP_DYNAMIC) && lvalue_dim == 0) {
if (RNA_property_array_length(ptr, prop) != tot) {
#if 0
/* length is flexible */
if (!RNA_property_dynamic_array_set_length(ptr, prop, tot)) {
/* BLI_snprintf(error_str, error_str_size, "%s.%s: array length cannot be changed to %d", RNA_struct_identifier(ptr->type), RNA_property_identifier(prop), tot); */
PyErr_Format(PyExc_ValueError, "%s %s.%s: array length cannot be changed to %d", error_prefix, RNA_struct_identifier(ptr->type), RNA_property_identifier(prop), tot);
- return 0;
+ return -1;
}
#else
*totitem= tot;
- return 1;
+ return 0;
#endif
}
@@ -205,13 +230,13 @@
if (tot != len) {
/* BLI_snprintf(error_str, error_str_size, "sequence must have length of %d", len); */
PyErr_Format(PyExc_ValueError, "%s %.200s.%.200s, sequence must have %d items total, not %d", error_prefix, RNA_struct_identifier(ptr->type), RNA_property_identifier(prop), len, tot);
- return 0;
+ return -1;
}
}
*totitem= len;
- return 1;
+ return 0;
}
static int validate_array(PyObject *rvalue, PointerRNA *ptr, PropertyRNA *prop, int lvalue_dim, ItemTypeCheckFunc check_item_type, const char *item_type_str, int *totitem, const char *error_prefix)
@@ -221,8 +246,8 @@
/* validate type first because length validation may modify property array length */
- if (!validate_array_type(rvalue, lvalue_dim, totdim, dimsize, check_item_type, item_type_str, error_prefix))
- return 0;
+ if (validate_array_type(rvalue, lvalue_dim, totdim, dimsize, check_item_type, item_type_str, error_prefix) == -1)
+ return -1;
return validate_array_length(rvalue, ptr, prop, lvalue_dim, totitem, error_prefix);
}
@@ -250,25 +275,39 @@
int totdim= RNA_property_array_dimension(ptr, prop, NULL);
const int seq_size= PySequence_Size(seq);
- assert(seq_size != -1);
+ /* General note for 'data' being NULL or PySequence_GetItem() failing.
+ *
+ * This should never be NULL since we validated it, _but_ some triky python
+ * developer could write their own sequence type which succeeds on
+ * validating but fails later somehow, so include checks for safety. */
- for (i= 0; i < seq_size; i++) {
+ if(seq_size == -1) {
+ return NULL;
+ }
+
+ for (i= 0; (i < seq_size) && data; i++) {
PyObject *item= PySequence_GetItem(seq, i);
+ if(item) {
+ if (dim + 1 < totdim) {
+ data= copy_values(item, ptr, prop, dim + 1, data, item_size, index, convert_item, rna_set_index);
+ }
+ else {
+ data= copy_value_single(item, ptr, prop, data, item_size, index, convert_item, rna_set_index);
+ }
- if (dim + 1 < totdim) {
- data= copy_values(item, ptr, prop, dim + 1, data, item_size, index, convert_item, rna_set_index);
+ Py_DECREF(item);
+
+ /* data may be NULL, but the for loop checks */
}
else {
- data= copy_value_single(item, ptr, prop, data, item_size, index, convert_item, rna_set_index);
+ return NULL;
}
-
- Py_DECREF(item);
}
return data;
}
-static int py_to_array(PyObject *py, PointerRNA *ptr, PropertyRNA *prop, char *param_data, ItemTypeCheckFunc check_item_type, const char *item_type_str, int item_size, ItemConvertFunc convert_item, RNA_SetArrayFunc rna_set_array, const char *error_prefix)
+static int py_to_array(PyObject *seq, PointerRNA *ptr, PropertyRNA *prop, char *param_data, ItemTypeCheckFunc check_item_type, const char *item_type_str, int item_size, ItemConvertFunc convert_item, RNA_SetArrayFunc rna_set_array, const char *error_prefix)
{
/*int totdim, dim_size[MAX_ARRAY_DIMENSION];*/
int totitem;
@@ -276,8 +315,8 @@
/*totdim= RNA_property_array_dimension(ptr, prop, dim_size);*/ /*UNUSED*/
- if (!validate_array(py, ptr, prop, 0, check_item_type, item_type_str, &totitem, error_prefix)) {
- return 0;
+ if (validate_array(seq, ptr, prop, 0, check_item_type, item_type_str, &totitem, error_prefix) == -1) {
+ return -1;
}
if (totitem) {
@@ -297,16 +336,26 @@
data= PyMem_MALLOC(item_size * totitem);
}
- copy_values(py, ptr, prop, 0, data, item_size, NULL, convert_item, NULL);
+ /* will only fail in very rare cases since we already validated the
+ * python data, the check here is mainly for completeness. */
+ if(copy_values(seq, ptr, prop, 0, data, item_size, NULL, convert_item, NULL) != NULL) {
+ if (param_data==NULL) {
+ /* NULL can only pass through in case RNA property arraylength is 0 (impossible?) */
+ rna_set_array(ptr, prop, data);
+ PyMem_FREE(data);
+ }
+ }
+ else {
+ if (param_data==NULL) {
+ PyMem_FREE(data);
+ }
- if (param_data==NULL) {
- /* NULL can only pass through in case RNA property arraylength is 0 (impossible?) */
- rna_set_array(ptr, prop, data);
- PyMem_FREE(data);
+ PyErr_Format(PyExc_TypeError, "%s internal error parsing sequence of type '%s' after successful validation", error_prefix, Py_TYPE(seq)->tp_name);
+ return -1;
@@ Diff output truncated at 10240 characters. @@
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