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Fixes for lib_cvRegisterVar (the Lua version of CV_RegisterVar):

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* Make sure the consvar's properties are all initialised to zeros as defaults
* Error if the consvar is not given a name
* Error if the consvar has CV_CALL but no call function
* Error if the consvar has CV_NOINIT but not CV_CALL
This commit is contained in:
Monster Iestyn 2019-08-20 18:18:29 +01:00
parent c50831f875
commit 2dd5f1abe3
1 changed files with 9 additions and 0 deletions
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9
src/lua_consolelib.c
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@ -303,6 +303,8 @@ static int lib_cvRegisterVar(lua_State *L)
#define FIELDERROR(f, e) luaL_error(L, "bad value for " LUA_QL(f) " in table passed to " LUA_QL("CV_RegisterVar") " (%s)", e);
#define TYPEERROR(f, t) FIELDERROR(f, va("%s expected, got %s", lua_typename(L, t), luaL_typename(L, -1)))
memset(cvar, 0x00, sizeof(consvar_t)); // zero everything by default
lua_pushnil(L);
while (lua_next(L, 1)) {
// stack: cvar table, cvar userdata, key/index, value
@ -390,6 +392,13 @@ static int lib_cvRegisterVar(lua_State *L)
#undef FIELDERROR
#undef TYPEERROR
if (!cvar->name)
return luaL_error(L, M_GetText("Variable has no name!\n"));
if ((cvar->flags & CV_NOINIT) && !(cvar->flags & CV_CALL))
return luaL_error(L, M_GetText("Variable %s has CV_NOINIT without CV_CALL\n"), cvar->name);
if ((cvar->flags & CV_CALL) && !cvar->func)
return luaL_error(L, M_GetText("Variable %s has CV_CALL without a function\n"), cvar->name);
// stack: cvar table, cvar userdata
lua_getfield(L, LUA_REGISTRYINDEX, "CV_Vars");
I_Assert(lua_istable(L, 3));