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bpo-47101: list only activated algorithms in hashlib.algorithms_available (GH-32076)

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Christian Heimes 2022-03-23 22:30:05 +02:00 • committed by GitHub
parent c62b944dfc
commit 48e2010d92
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3 changed files with 20 additions and 1 deletions
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13
Modules/_hashopenssl.c
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@ -1836,15 +1836,21 @@ typedef struct _internal_name_mapper_state {
/* A callback function to pass to OpenSSL's OBJ_NAME_do_all(...) */
static void
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
_openssl_hash_name_mapper(EVP_MD *md, void *arg)
#else
_openssl_hash_name_mapper(const EVP_MD *md, const char *from,
const char *to, void *arg)
#endif
{
_InternalNameMapperState *state = (_InternalNameMapperState *)arg;
PyObject *py_name;
assert(state != NULL);
if (md == NULL)
// ignore all undefined providers
if ((md == NULL) || (EVP_MD_nid(md) == NID_undef)) {
return;
}
py_name = py_digest_name(md);
if (py_name == NULL) {
@ -1870,7 +1876,12 @@ hashlib_md_meth_names(PyObject *module)
return -1;
}
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
// get algorithms from all activated providers in default context
EVP_MD_do_all_provided(NULL, &_openssl_hash_name_mapper, &state);
#else
EVP_MD_do_all(&_openssl_hash_name_mapper, &state);
#endif
if (state.error) {
Py_DECREF(state.set);