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Fix SHA_new and MD5_new, that would crash if not given initial data

This commit is contained in:
Kristján Valur Jónsson 2009-03-03 03:20:42 +00:00
parent 7d49bba969
commit 7705d0aaaf
2 changed files with 13 additions and 8 deletions
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4
Modules/md5module.c
View File

@ -272,9 +272,11 @@ MD5_new(PyObject *self, PyObject *args)
if (!PyArg_ParseTuple(args, "|O:new", &data_obj))
return NULL;
if (data_obj)
GET_BUFFER_VIEW_OR_ERROUT(data_obj, &view, NULL);
if ((md5p = newmd5object()) == NULL) {
if (data_obj)
PyBuffer_Release(&view);
return NULL;
}
@ -282,9 +284,9 @@ MD5_new(PyObject *self, PyObject *args)
if (data_obj) {
md5_append(&md5p->md5, (unsigned char*)view.buf,
Py_SAFE_DOWNCAST(view.len, Py_ssize_t, unsigned int));
PyBuffer_Release(&view);
}
PyBuffer_Release(&view);
return (PyObject *)md5p;
}

5
Modules/shamodule.c
View File

@ -548,9 +548,11 @@ SHA_new(PyObject *self, PyObject *args, PyObject *kwdict)
return NULL;
}
if (data_obj)
GET_BUFFER_VIEW_OR_ERROUT(data_obj, &view, NULL);
if ((new = newSHAobject()) == NULL) {
if (data_obj)
PyBuffer_Release(&view);
return NULL;
}
@ -559,15 +561,16 @@ SHA_new(PyObject *self, PyObject *args, PyObject *kwdict)
if (PyErr_Occurred()) {
Py_DECREF(new);
if (data_obj)
PyBuffer_Release(&view);
return NULL;
}
if (data_obj) {
sha_update(new, (unsigned char*)view.buf,
Py_SAFE_DOWNCAST(view.len, Py_ssize_t, unsigned int));
PyBuffer_Release(&view);
}
PyBuffer_Release(&view);
return (PyObject *)new;
}