77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "daemon/bindings/impl.h"
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/** List loaded modules */
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static int mod_list(lua_State *L)
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{
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const module_array_t * const modules = &the_worker->engine->modules;
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lua_newtable(L);
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for (unsigned i = 0; i < modules->len; ++i) {
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struct kr_module *module = modules->at[i];
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lua_pushstring(L, module->name);
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lua_rawseti(L, -2, i + 1);
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}
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return 1;
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}
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/** Load module. */
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static int mod_load(lua_State *L)
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{
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/* Check parameters */
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int n = lua_gettop(L);
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if (n != 1 || !lua_isstring(L, 1))
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lua_error_p(L, "expected 'load(string name)'");
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/* Parse precedence declaration */
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char *declaration = strdup(lua_tostring(L, 1));
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if (!declaration)
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return kr_error(ENOMEM);
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const char *name = strtok(declaration, " ");
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const char *precedence = strtok(NULL, " ");
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const char *ref = strtok(NULL, " ");
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/* Load engine module */
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int ret = engine_register(the_worker->engine, name, precedence, ref);
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free(declaration);
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if (ret != 0) {
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if (ret == kr_error(EIDRM)) {
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lua_error_p(L, "referenced module not found");
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} else {
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lua_error_maybe(L, ret);
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}
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}
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lua_pushboolean(L, 1);
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return 1;
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}
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/** Unload module. */
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static int mod_unload(lua_State *L)
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{
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/* Check parameters */
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int n = lua_gettop(L);
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if (n != 1 || !lua_isstring(L, 1))
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lua_error_p(L, "expected 'unload(string name)'");
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/* Unload engine module */
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int ret = engine_unregister(the_worker->engine, lua_tostring(L, 1));
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lua_error_maybe(L, ret);
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lua_pushboolean(L, 1);
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return 1;
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}
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int kr_bindings_modules(lua_State *L)
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{
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static const luaL_Reg lib[] = {
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{ "list", mod_list },
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{ "load", mod_load },
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{ "unload", mod_unload },
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{ NULL, NULL }
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};
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luaL_register(L, "modules", lib);
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return 1;
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}
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