Issue #19448: Add private API to SSL module to lookup ASN.1 objects by OID, NID, short name and long name.
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 83a271e..75b8360 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2998,6 +2998,93 @@
return NULL;
}
+static PyObject*
+asn1obj2py(ASN1_OBJECT *obj)
+{
+ int nid;
+ const char *ln, *sn;
+ char buf[100];
+ int buflen;
+
+ nid = OBJ_obj2nid(obj);
+ if (nid == NID_undef) {
+ PyErr_Format(PyExc_ValueError, "Unknown object");
+ return NULL;
+ }
+ sn = OBJ_nid2sn(nid);
+ ln = OBJ_nid2ln(nid);
+ buflen = OBJ_obj2txt(buf, sizeof(buf), obj, 1);
+ if (buflen < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ return NULL;
+ }
+ if (buflen) {
+ return Py_BuildValue("isss#", nid, sn, ln, buf, buflen);
+ } else {
+ return Py_BuildValue("issO", nid, sn, ln, Py_None);
+ }
+}
+
+PyDoc_STRVAR(PySSL_txt2obj_doc,
+"txt2obj(txt, name=False) -> (nid, shortname, longname, oid)\n\
+\n\
+Lookup NID, short name, long name and OID of an ASN1_OBJECT. By default\n\
+objects are looked up by OID. With name=True short and long name are also\n\
+matched.");
+
+static PyObject*
+PySSL_txt2obj(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ char *kwlist[] = {"txt", "name", NULL};
+ PyObject *result = NULL;
+ char *txt;
+ int name = 0;
+ ASN1_OBJECT *obj;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|p:txt2obj",
+ kwlist, &txt, &name)) {
+ return NULL;
+ }
+ obj = OBJ_txt2obj(txt, name ? 0 : 1);
+ if (obj == NULL) {
+ PyErr_Format(PyExc_ValueError, "Unknown object");
+ return NULL;
+ }
+ result = asn1obj2py(obj);
+ ASN1_OBJECT_free(obj);
+ return result;
+}
+
+PyDoc_STRVAR(PySSL_nid2obj_doc,
+"nid2obj(nid) -> (nid, shortname, longname, oid)\n\
+\n\
+Lookup NID, short name, long name and OID of an ASN1_OBJECT by NID.");
+
+static PyObject*
+PySSL_nid2obj(PyObject *self, PyObject *args)
+{
+ PyObject *result = NULL;
+ int nid;
+ ASN1_OBJECT *obj;
+
+ if (!PyArg_ParseTuple(args, "i:nid2obj", &nid)) {
+ return NULL;
+ }
+ if (nid < NID_undef) {
+ PyErr_Format(PyExc_ValueError, "NID must be positive.");
+ return NULL;
+ }
+ obj = OBJ_nid2obj(nid);
+ if (obj == NULL) {
+ PyErr_Format(PyExc_ValueError, "Unknown NID");
+ return NULL;
+ }
+ result = asn1obj2py(obj);
+ ASN1_OBJECT_free(obj);
+ return result;
+}
+
+
#ifdef _MSC_VER
PyDoc_STRVAR(PySSL_enum_cert_store_doc,
"enum_cert_store(store_name, cert_type='certificate') -> []\n\
@@ -3145,6 +3232,10 @@
{"enum_cert_store", (PyCFunction)PySSL_enum_cert_store,
METH_VARARGS | METH_KEYWORDS, PySSL_enum_cert_store_doc},
#endif
+ {"txt2obj", (PyCFunction)PySSL_txt2obj,
+ METH_VARARGS | METH_KEYWORDS, PySSL_txt2obj_doc},
+ {"nid2obj", (PyCFunction)PySSL_nid2obj,
+ METH_VARARGS, PySSL_nid2obj_doc},
{NULL, NULL} /* Sentinel */
};