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/*
Minetest
Copyright (C) 2018 bendeutsch, Ben Deutsch <ben@bendeutsch.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "lua_api/l_auth.h"
#include "lua_api/l_internal.h"
#include "common/c_converter.h"
#include "common/c_content.h"
#include "cpp_api/s_base.h"
#include "server.h"
#include "environment.h"
#include "database/database.h"
#include <algorithm>
// common start: ensure auth db
AuthDatabase *ModApiAuth::getAuthDb(lua_State *L)
{
ServerEnvironment *server_environment =
dynamic_cast<ServerEnvironment *>(getEnv(L));
if (!server_environment)
return nullptr;
return server_environment->getAuthDatabase();
}
void ModApiAuth::pushAuthEntry(lua_State *L, const AuthEntry &authEntry)
{
lua_newtable(L);
int table = lua_gettop(L);
// id
lua_pushnumber(L, authEntry.id);
lua_setfield(L, table, "id");
// name
lua_pushstring(L, authEntry.name.c_str());
lua_setfield(L, table, "name");
// password
lua_pushstring(L, authEntry.password.c_str());
lua_setfield(L, table, "password");
// privileges
lua_newtable(L);
int privtable = lua_gettop(L);
for (const std::string &privs : authEntry.privileges) {
lua_pushboolean(L, true);
lua_setfield(L, privtable, privs.c_str());
}
lua_setfield(L, table, "privileges");
// last_login
lua_pushnumber(L, authEntry.last_login);
lua_setfield(L, table, "last_login");
lua_pushvalue(L, table);
}
// auth_read(name)
int ModApiAuth::l_auth_read(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
AuthDatabase *auth_db = getAuthDb(L);
if (!auth_db)
return 0;
AuthEntry authEntry;
const char *name = luaL_checkstring(L, 1);
bool success = auth_db->getAuth(std::string(name), authEntry);
if (!success)
return 0;
pushAuthEntry(L, authEntry);
return 1;
}
// auth_save(table)
int ModApiAuth::l_auth_save(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
AuthDatabase *auth_db = getAuthDb(L);
if (!auth_db)
return 0;
luaL_checktype(L, 1, LUA_TTABLE);
int table = 1;
AuthEntry authEntry;
bool success;
success = getintfield(L, table, "id", authEntry.id);
success = success && getstringfield(L, table, "name", authEntry.name);
success = success && getstringfield(L, table, "password", authEntry.password);
lua_getfield(L, table, "privileges");
if (lua_istable(L, -1)) {
lua_pushnil(L);
while (lua_next(L, -2)) {
authEntry.privileges.emplace_back(
lua_tostring(L, -2)); // the key, not the value
lua_pop(L, 1);
}
} else {
success = false;
}
lua_pop(L, 1); // the table
success = success && getintfield(L, table, "last_login", authEntry.last_login);
if (!success) {
lua_pushboolean(L, false);
return 1;
}
lua_pushboolean(L, auth_db->saveAuth(authEntry));
return 1;
}
// auth_create(table)
int ModApiAuth::l_auth_create(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
AuthDatabase *auth_db = getAuthDb(L);
if (!auth_db)
return 0;
luaL_checktype(L, 1, LUA_TTABLE);
int table = 1;
AuthEntry authEntry;
bool success;
// no meaningful id field, we assume
success = getstringfield(L, table, "name", authEntry.name);
success = success && getstringfield(L, table, "password", authEntry.password);
lua_getfield(L, table, "privileges");
if (lua_istable(L, -1)) {
lua_pushnil(L);
while (lua_next(L, -2)) {
authEntry.privileges.emplace_back(
lua_tostring(L, -2)); // the key, not the value
lua_pop(L, 1);
}
} else {
success = false;
}
lua_pop(L, 1); // the table
success = success && getintfield(L, table, "last_login", authEntry.last_login);
if (!success)
return 0;
if (auth_db->createAuth(authEntry)) {
pushAuthEntry(L, authEntry);
return 1;
}
return 0;
}
// auth_delete(name)
int ModApiAuth::l_auth_delete(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
AuthDatabase *auth_db = getAuthDb(L);
if (!auth_db)
return 0;
std::string name(luaL_checkstring(L, 1));
lua_pushboolean(L, auth_db->deleteAuth(name));
return 1;
}
// auth_list_names()
int ModApiAuth::l_auth_list_names(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
AuthDatabase *auth_db = getAuthDb(L);
if (!auth_db)
return 0;
std::vector<std::string> names;
auth_db->listNames(names);
lua_createtable(L, names.size(), 0);
int table = lua_gettop(L);
int i = 1;
for (const std::string &name : names) {
lua_pushstring(L, name.c_str());
lua_rawseti(L, table, i++);
}
return 1;
}
// auth_reload()
int ModApiAuth::l_auth_reload(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
AuthDatabase *auth_db = getAuthDb(L);
if (auth_db)
auth_db->reload();
return 0;
}
void ModApiAuth::Initialize(lua_State *L, int top)
{
lua_newtable(L);
int auth_top = lua_gettop(L);
registerFunction(L, "read", l_auth_read, auth_top);
registerFunction(L, "save", l_auth_save, auth_top);
registerFunction(L, "create", l_auth_create, auth_top);
registerFunction(L, "delete", l_auth_delete, auth_top);
registerFunction(L, "list_names", l_auth_list_names, auth_top);
registerFunction(L, "reload", l_auth_reload, auth_top);
lua_setfield(L, top, "auth");
}
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