Implement minetest.register_can_bypass_userlimit (#6369)
* Implement minetest.register_on_userlimit_check This new callback permits to bypass the max_users parameter with new mods condition, based on player name or IP Only one mod needs to permit it. Move core part for builtin privileges checks to builtinwsc-master-rebase
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c05228fa6d
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40dd03e328
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@ -86,3 +86,8 @@ core.register_privilege("debug", {
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description = "Allows enabling various debug options that may affect gameplay",
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give_to_singleplayer = false,
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})
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core.register_can_bypass_userlimit(function(name, ip)
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local privs = core.get_player_privs(name)
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return privs["server"] or privs["ban"] or privs["privs"] or privs["password"]
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end)
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@ -581,6 +581,7 @@ core.registered_on_item_eats, core.register_on_item_eat = make_registration()
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core.registered_on_punchplayers, core.register_on_punchplayer = make_registration()
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core.registered_on_priv_grant, core.register_on_priv_grant = make_registration()
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core.registered_on_priv_revoke, core.register_on_priv_revoke = make_registration()
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core.registered_can_bypass_userlimit, core.register_can_bypass_userlimit = make_registration()
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--
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-- Compatibility for on_mapgen_init()
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@ -2470,6 +2470,9 @@ Call these functions only at load time!
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* Called when `revoker` revokes the priv `priv` from `name`.
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* Note that the callback will be called twice if it's done by a player, once with revoker being the player name,
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and again with revoker being nil.
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* `minetest.register_can_bypass_userlimit(function(name, ip))`
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* Called when `name` user connects with `ip`.
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* Return `true` to by pass the player limit
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### Other registration functions
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* `minetest.register_chatcommand(cmd, chatcommand definition)`
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@ -209,13 +209,10 @@ void Server::handleCommand_Init(NetworkPacket* pkt)
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<< addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
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// Enforce user limit.
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// Don't enforce for users that have some admin right
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// Don't enforce for users that have some admin right or mod permits it.
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if (m_clients.isUserLimitReached() &&
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!checkPriv(playername, "server") &&
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!checkPriv(playername, "ban") &&
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!checkPriv(playername, "privs") &&
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!checkPriv(playername, "password") &&
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playername != g_settings->get("name")) {
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playername != g_settings->get("name") &&
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!m_script->can_bypass_userlimit(playername, addr_s)) {
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actionstream << "Server: " << playername << " tried to join from "
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<< addr_s << ", but there" << " are already max_users="
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<< g_settings->getU16("max_users") << " players." << std::endl;
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@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "cpp_api/s_internal.h"
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#include "common/c_converter.h"
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#include "common/c_content.h"
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#include "debug.h"
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#include "util/string.h"
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void ScriptApiPlayer::on_newplayer(ServerActiveObject *player)
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@ -123,6 +124,20 @@ bool ScriptApiPlayer::on_prejoinplayer(
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return false;
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}
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bool ScriptApiPlayer::can_bypass_userlimit(const std::string &name, const std::string &ip)
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{
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SCRIPTAPI_PRECHECKHEADER
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// Get core.registered_on_prejoinplayers
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lua_getglobal(L, "core");
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lua_getfield(L, -1, "registered_can_bypass_userlimit");
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lua_pushstring(L, name.c_str());
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lua_pushstring(L, ip.c_str());
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runCallbacks(2, RUN_CALLBACKS_MODE_OR);
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FATAL_ERROR_IF(!lua_isboolean(L, -1), "on_user_limitcheck must return a boolean");
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return lua_toboolean(L, -1);
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}
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void ScriptApiPlayer::on_joinplayer(ServerActiveObject *player)
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{
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SCRIPTAPI_PRECHECKHEADER
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@ -35,6 +35,7 @@ public:
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bool on_respawnplayer(ServerActiveObject *player);
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bool on_prejoinplayer(const std::string &name, const std::string &ip,
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std::string *reason);
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bool can_bypass_userlimit(const std::string &name, const std::string &ip);
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void on_joinplayer(ServerActiveObject *player);
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void on_leaveplayer(ServerActiveObject *player, bool timeout);
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void on_cheat(ServerActiveObject *player, const std::string &cheat_type);
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