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bpo-40956: Fix segfault when Connection.backup is called without target (GH-24503)

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Erlend Egeberg Aasland 2021-02-11 00:04:02 +01:00 • committed by GitHub
parent 749d40a53f
commit ea46579067
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4 changed files with 18 additions and 22 deletions
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29
Modules/_sqlite/clinic/connection.c.h
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@ -519,8 +519,8 @@ pysqlite_connection_iterdump(pysqlite_Connection *self, PyObject *Py_UNUSED(igno
}
PyDoc_STRVAR(pysqlite_connection_backup__doc__,
"backup($self, /, target=<unrepresentable>, *, pages=-1, progress=None,\n"
" name=\'main\', sleep=0.25)\n"
"backup($self, /, target, *, pages=-1, progress=None, name=\'main\',\n"
" sleep=0.25)\n"
"--\n"
"\n"
"Makes a backup of the database. Non-standard.");
@ -541,31 +541,22 @@ pysqlite_connection_backup(pysqlite_Connection *self, PyObject *const *args, Py_
static const char * const _keywords[] = {"target", "pages", "progress", "name", "sleep", NULL};
static _PyArg_Parser _parser = {NULL, _keywords, "backup", 0};
PyObject *argsbuf[5];
Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
pysqlite_Connection *target = NULL;
Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
pysqlite_Connection *target;
int pages = -1;
PyObject *progress = Py_None;
const char *name = "main";
double sleep = 0.25;
args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
if (!args) {
goto exit;
}
if (!noptargs) {
goto skip_optional_pos;
if (!PyObject_TypeCheck(args[0], pysqlite_ConnectionType)) {
_PyArg_BadArgument("backup", "argument 'target'", (pysqlite_ConnectionType)->tp_name, args[0]);
goto exit;
}
if (args[0]) {
if (!PyObject_TypeCheck(args[0], pysqlite_ConnectionType)) {
_PyArg_BadArgument("backup", "argument 'target'", (pysqlite_ConnectionType)->tp_name, args[0]);
goto exit;
}
target = (pysqlite_Connection *)args[0];
if (!--noptargs) {
goto skip_optional_pos;
}
}
skip_optional_pos:
target = (pysqlite_Connection *)args[0];
if (!noptargs) {
goto skip_optional_kwonly;
}
@ -719,4 +710,4 @@ exit:
#ifndef PYSQLITE_CONNECTION_LOAD_EXTENSION_METHODDEF
#define PYSQLITE_CONNECTION_LOAD_EXTENSION_METHODDEF
#endif /* !defined(PYSQLITE_CONNECTION_LOAD_EXTENSION_METHODDEF) */
/*[clinic end generated code: output=7cb13d491a5970aa input=a9049054013a1b77]*/
/*[clinic end generated code: output=c1bf09db3bcd0105 input=a9049054013a1b77]*/