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util.crypto: Friendlier error message on incorrect key types

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Matthew Wild 2022-07-02 11:51:24 +01:00
parent ba282f1070
commit d7b32f1b71
1 changed files with 6 additions and 1 deletions
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7
util-src/crypto.c
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@ -45,6 +45,8 @@ MANAGED_POINTER_ALLOCATOR(new_managed_EVP_MD_CTX, EVP_MD_CTX*, EVP_MD_CTX_new, E
MANAGED_POINTER_ALLOCATOR(new_managed_BIO_s_mem, BIO*, new_memory_BIO, BIO_free)
MANAGED_POINTER_ALLOCATOR(new_managed_EVP_CIPHER_CTX, EVP_CIPHER_CTX*, EVP_CIPHER_CTX_new, EVP_CIPHER_CTX_free)
#define CRYPTO_KEY_TYPE_ERR "unexpected key type: got '%s', expected '%s'"
static EVP_PKEY* pkey_from_arg(lua_State *L, int idx, const int type, const int require_private) {
EVP_PKEY *pkey = *(EVP_PKEY**)luaL_checkudata(L, idx, PKEY_MT_TAG);
int got_type;
@ -54,7 +56,10 @@ static EVP_PKEY* pkey_from_arg(lua_State *L, int idx, const int type, const int
lua_getfield(L, -1, "type");
got_type = lua_tointeger(L, -1);
if(got_type != type) {
luaL_argerror(L, idx, "unexpected key type");
const char *got_key_type_name = OBJ_nid2sn(got_type);
const char *want_key_type_name = OBJ_nid2sn(type);
lua_pushfstring(L, CRYPTO_KEY_TYPE_ERR, got_key_type_name, want_key_type_name);
luaL_argerror(L, idx, lua_tostring(L, -1));
}
lua_pop(L, 1);
}