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closes bpo-37347: Fix refcount problem in sqlite3. (GH-14268)

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gescheit 2019-07-13 06:15:49 +03:00 • committed by Benjamin Peterson
parent 0827064c95
commit b9a0376b0d
6 changed files with 66 additions and 98 deletions
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75
Modules/_sqlite/connection.c
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@ -186,10 +186,9 @@ int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject
}
self->check_same_thread = check_same_thread;
Py_XSETREF(self->function_pinboard, PyDict_New());
if (!self->function_pinboard) {
return -1;
}
self->function_pinboard_trace_callback = NULL;
self->function_pinboard_progress_handler = NULL;
self->function_pinboard_authorizer_cb = NULL;
Py_XSETREF(self->collations, PyDict_New());
if (!self->collations) {
@ -249,19 +248,18 @@ void pysqlite_connection_dealloc(pysqlite_Connection* self)
/* Clean up if user has not called .close() explicitly. */
if (self->db) {
Py_BEGIN_ALLOW_THREADS
SQLITE3_CLOSE(self->db);
Py_END_ALLOW_THREADS
}
Py_XDECREF(self->isolation_level);
Py_XDECREF(self->function_pinboard);
Py_XDECREF(self->function_pinboard_trace_callback);
Py_XDECREF(self->function_pinboard_progress_handler);
Py_XDECREF(self->function_pinboard_authorizer_cb);
Py_XDECREF(self->row_factory);
Py_XDECREF(self->text_factory);
Py_XDECREF(self->collations);
Py_XDECREF(self->statements);
Py_XDECREF(self->cursors);
Py_TYPE(self)->tp_free((PyObject*)self);
}
@ -342,9 +340,7 @@ PyObject* pysqlite_connection_close(pysqlite_Connection* self, PyObject* args)
pysqlite_do_all_statements(self, ACTION_FINALIZE, 1);
if (self->db) {
Py_BEGIN_ALLOW_THREADS
rc = SQLITE3_CLOSE(self->db);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
@ -808,6 +804,11 @@ static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self)
Py_SETREF(self->cursors, new_list);
}
static void _destructor(void* args)
{
Py_DECREF((PyObject*)args);
}
PyObject* pysqlite_connection_create_function(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
static char *kwlist[] = {"name", "narg", "func", "deterministic", NULL};
@ -843,17 +844,16 @@ PyObject* pysqlite_connection_create_function(pysqlite_Connection* self, PyObjec
flags |= SQLITE_DETERMINISTIC;
#endif
}
if (PyDict_SetItem(self->function_pinboard, func, Py_None) == -1) {
return NULL;
}
rc = sqlite3_create_function(self->db,
name,
narg,
flags,
(void*)func,
_pysqlite_func_callback,
NULL,
NULL);
Py_INCREF(func);
rc = sqlite3_create_function_v2(self->db,
name,
narg,
flags,
(void*)func,
_pysqlite_func_callback,
NULL,
NULL,
&_destructor); // will decref func
if (rc != SQLITE_OK) {
/* Workaround for SQLite bug: no error code or string is available here */
@ -880,11 +880,16 @@ PyObject* pysqlite_connection_create_aggregate(pysqlite_Connection* self, PyObje
kwlist, &name, &n_arg, &aggregate_class)) {
return NULL;
}
if (PyDict_SetItem(self->function_pinboard, aggregate_class, Py_None) == -1) {
return NULL;
}
rc = sqlite3_create_function(self->db, name, n_arg, SQLITE_UTF8, (void*)aggregate_class, 0, &_pysqlite_step_callback, &_pysqlite_final_callback);
Py_INCREF(aggregate_class);
rc = sqlite3_create_function_v2(self->db,
name,
n_arg,
SQLITE_UTF8,
(void*)aggregate_class,
0,
&_pysqlite_step_callback,
&_pysqlite_final_callback,
&_destructor); // will decref func
if (rc != SQLITE_OK) {
/* Workaround for SQLite bug: no error code or string is available here */
PyErr_SetString(pysqlite_OperationalError, "Error creating aggregate");
@ -1003,13 +1008,14 @@ static PyObject* pysqlite_connection_set_authorizer(pysqlite_Connection* self, P
return NULL;
}
if (PyDict_SetItem(self->function_pinboard, authorizer_cb, Py_None) == -1) {
return NULL;
}
rc = sqlite3_set_authorizer(self->db, _authorizer_callback, (void*)authorizer_cb);
if (rc != SQLITE_OK) {
PyErr_SetString(pysqlite_OperationalError, "Error setting authorizer callback");
Py_XSETREF(self->function_pinboard_authorizer_cb, NULL);
return NULL;
} else {
Py_INCREF(authorizer_cb);
Py_XSETREF(self->function_pinboard_authorizer_cb, authorizer_cb);
}
Py_RETURN_NONE;
}
@ -1033,12 +1039,12 @@ static PyObject* pysqlite_connection_set_progress_handler(pysqlite_Connection* s
if (progress_handler == Py_None) {
/* None clears the progress handler previously set */
sqlite3_progress_handler(self->db, 0, 0, (void*)0);
Py_XSETREF(self->function_pinboard_progress_handler, NULL);
} else {
if (PyDict_SetItem(self->function_pinboard, progress_handler, Py_None) == -1)
return NULL;
sqlite3_progress_handler(self->db, n, _progress_handler, progress_handler);
Py_INCREF(progress_handler);
Py_XSETREF(self->function_pinboard_progress_handler, progress_handler);
}
Py_RETURN_NONE;
}
@ -1060,10 +1066,11 @@ static PyObject* pysqlite_connection_set_trace_callback(pysqlite_Connection* sel
if (trace_callback == Py_None) {
/* None clears the trace callback previously set */
sqlite3_trace(self->db, 0, (void*)0);
Py_XSETREF(self->function_pinboard_trace_callback, NULL);
} else {
if (PyDict_SetItem(self->function_pinboard, trace_callback, Py_None) == -1)
return NULL;
sqlite3_trace(self->db, _trace_callback, trace_callback);
Py_INCREF(trace_callback);
Py_XSETREF(self->function_pinboard_trace_callback, trace_callback);
}
Py_RETURN_NONE;