locks/init.lua

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--[[
Shared locked objects (Mod for MineTest)
Allows to restrict usage of blocks to a certain player or a group of
players.
Copyright (C) 2013 Sokomine
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
--]]
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-- Version 1.20
-- Changelog:
-- 08.05.2014 * Changed animation of shared locked furnace (removed pipeworks overlay on front, changed to new animation type)
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-- 10.01.2013 * Added command to toggle for pipeworks output
-- * Added pipeworks support for chests and furnace.
-- 17.12.2013 * aborting input with ESC is possible again
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-- 01.09.2013 * fixed bug in input sanitization
-- 31.08.2013 * changed receipe for key to avoid crafting conflickt with screwdriver
-- 10.07.2013 * removed a potential bug (now uses string:gmatch)
-- * added shared locked furnaces
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locks = {};
minetest.register_privilege("openlocks", { description = "allows to open/use all locked objects", give_to_singleplayer = false});
minetest.register_privilege("diglocks", { description = "allows to open/use and dig up all locked objects", give_to_singleplayer = false});
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locks.pipeworks_enabled = false;
if( minetest.get_modpath("pipeworks") ~= nil ) then
locks.pipeworks_enabled = true;
end
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-- initializes a lock (that is: prepare the metadata so that it can store data)
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-- default_formspec is the formspec that will be used on right click; the input field for the commands has to exist
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-- Call this in on_construct in register_node. Excample:
-- on_construct = function(pos)
-- locks:lock_init( pos, "" );
-- end;
function locks:lock_init( pos, default_formspec )
if( pos == nil ) then
print( "Error: [locks] lock_init: pos is nil");
return;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil ) then
print( "Error: [locks] lock_init: unable to get meta data");
return;
end
-- this will be changed after the node is placed
meta:set_string("infotext", "Locked object");
-- prepare the field for the owner
meta:set_string("owner", "");
-- this is the list of players/groups that may unlock the lock even if they are not the owner
meta:set_string("allowed_users","");
-- objects can be unlocked by passwords as well (if it is set)
meta:set_string("password","");
-- the last player who entered the right password (to save space this is not a list)
meta:set_string("pw_user","");
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-- this formspec is presented on right-click for every user
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meta:set_string("formspec", default_formspec);
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-- by default, do not send output to pipework tubes
meta:set_int( "allow_pipeworks", 0 );
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end
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-- returns the information stored in the metadata strings (like owner etc.)
function locks:get_lockdata( pos )
if( pos == nil ) then
return;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil) then
return;
end
return{ infotext = (meta:get_string( "infotext" ) or ""),
owner = (meta:get_string( "owner" ) or ""),
allowed_users = (meta:get_string( "allowed_users" ) or ""),
password = (meta:get_string( "password" ) or ""),
pw_user = (meta:get_string( "w_user" ) or ""),
formspec = (meta:get_string( "formspec" ) or "")
};
end
-- sets all the metadata the look needs (used e.g. in doors)
function locks:set_lockdata( pos, data )
if( pos == nil ) then
return;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil) then
return;
end
meta:set_string("infotext", (data.infotext or ""));
meta:set_string("owner", (data.owner or ""));
meta:set_string("allowed_users",(data.allowed_users or ""));
meta:set_string("password", (data.password or ""));
meta:set_string("pw_user", (data.pw_user or ""));
meta:set_string("formspec", (data.formspec or ""));
end
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-- Set the owner of the locked object.
-- Call this in after_place_node in register_node. Example:
-- after_place_node = function(pos, placer)
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-- locks:lock_set_owner( pos, placer, "Shared locked object" );
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-- end,
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function locks:lock_set_owner( pos, player_or_name, description )
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if( pos == nil or player_or_name == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_set_owner");
return false;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil ) then
print( "Error: [locks] lock_set_owner: unable to get meta data");
return;
end
-- accepts a name or a player object
if( type( player_or_name )~="string") then
player_or_name = player_or_name:get_player_name();
end
meta:set_string("owner", player_or_name or "");
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-- add the name of the owner to the description
meta:set_string("infotext", ( description or "Shared lockecd object" ).." (owned by "..meta:get_string("owner")..")");
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end
-- The locked object can only be digged by the owner OR by people with the diglocks priv
-- Call this in can_dig in register_node. Example:
-- can_dig = function(pos,player)
-- return locks:lock_allow_dig( pos, player );
-- end
function locks:lock_allow_dig( pos, player )
if( pos == nil or player == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_allow_dig");
return false;
end
local meta = minetest.env:get_meta(pos);
local lock_owner = meta:get_string("owner");
-- locks who lost their owner can be opened/digged by anyone
if( meta == nil or lock_owner == nil or lock_owner == "") then
return true;
end
-- the owner can dig up his own locked objects
if( player:get_player_name() == meta:get_string("owner")) then
return true;
end
-- players with diglocks priv can dig up locked objects as well
if( minetest.check_player_privs(player:get_player_name(), {diglocks=true})) then
return true;
end
return false; -- fallback
end
-- The locked object can only be used (i.e. opened, stuff taken out, changed, ... - depends on object) if this
-- function returns true. Call it wherever appropriate (usually in on_punch in register_node). Example:
-- on_punch = function(pos,player)
-- if( !locks:lock_allow_use( pos, player ) then
-- print( "Sorry, you have no access here.");
-- else
-- do_what_this_object_is_good_for( pos, puncher );
-- end
-- end
function locks:lock_allow_use( pos, player )
if( pos == nil or player == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_allow_use");
return false;
end
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local name = player:get_player_name();
local meta = minetest.env:get_meta(pos);
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-- pipeworks sends a special username
if( name == ':pipeworks' or (player.is_fake_player and player.is_fake_player==":pipeworks")) then
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if( meta:get_int( 'allow_pipeworks' ) == 1 ) then
return true;
else
return false;
end
end
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-- the player has to have a key or a keychain to open his own shared locked objects
if( name == meta:get_string("owner")) then
if( not( player:get_inventory():contains_item("main","locks:keychain 1"))
and not( player:get_inventory():contains_item("main","locks:key 1"))) then
minetest.chat_send_player( name, "You do not have a key or a keychain. Without that you can't use your shared locked objects!");
return false;
end
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-- the player has to have a keychain to open shared locked objects of other players
else
if( not( player:get_inventory():contains_item("main","locks:keychain 1"))) then
minetest.chat_send_player(name, "You do not have a keychain. Without that you can't open shared locked objects of other players!");
return false;
end
end
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-- if the user would even be allowed to dig this node up, using the node is allowed as well
if( locks:lock_allow_dig( pos, player )) then
return true;
end
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if( meta == nil ) then
minetest.chat_send_player( name, "Error: Could not access metadata of this shared locked object.");
return false;
end
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-- players with openlocks priv can open locked objects
if( minetest.check_player_privs(name, {openlocks=true})) then
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return true;
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end
-- the player might be specificly allowed to use this object through allowed_users
local liste = meta:get_string("allowed_users"):split( "," );
for i in ipairs( liste ) do
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if( liste[i] == name ) then
return true;
end
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-- the player might member of a playergroup that is allowed to use this object
if( liste[i]:sub(1,1) == ":"
and playergroups ~= nil
and playergroups:is_group_member( meta:get_string("owner"), liste[i]:sub(2), name )) then
return true;
end
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end
-- the player may have entered the right password
if( name == meta:get_string("pw_user")) then
return true;
end
-- the lock may have a password set. If this is the case then ask the user for it
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if( meta:get_string( "password" ) and meta:get_string( "password" ) ~= "" ) then
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minetest.chat_send_player(name, "Access denied. Right-click and enter password first!");
return false;
end
return false; -- fallback
end
-- Method for the lock to get password and configuration data
-- Call in on_receive_fields in register_node. Example:
-- on_receive_fields = function(pos, formname, fields, sender)
-- locks:lock_handle_input( pos, formname, fields, sender );
-- end,
function locks:lock_handle_input( pos, formname, fields, player )
if( pos == nil or player == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_handle_input");
return false;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil ) then
print( "Error: [locks] lock_handle_input: unable to get meta data");
return;
end
-- is this input the lock is supposed to handle?
if( ( not( fields.locks_sent_lock_command )
or fields.locks_sent_lock_command == "" )
and (fields.quit and (fields.quit==true or fields.quit=='true'))) then
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-- or not( fields.locks_sent_input )
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return;
end
name = player:get_player_name();
if( fields.locks_sent_lock_command == "/help" ) then
if( name == meta:get_string( "owner" )) then
minetest.chat_send_player(name, "The following commands are available to you, the owner of this object, only:\n"..
" /help Shows this help text.\n"..
" /add <name> Player <name> can now unlock this object with any key.\n"..
" /del <name> Player <name> can no longer use this object.\n"..
" /list Shows a list of players who can use this object.\n"..
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" /set <password> Sets a password. Everyone who types that in can use the object.\n"..
" /pipeworks Toggles permission for pipeworks to take inventory out of the shared locked object.\n");
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else if( locks:lock_allow_use( pos, player )) then
minetest.chat_send_player(name, "This locked object is owned by "..tostring( meta:get_string( "owner" ))..".\n"..
"You do have access to it.\n");
else if( meta:get_string( "password" ) ~= "" ) then
minetest.chat_send_player(name, "This locked object is owned by "..tostring( meta:get_string( "owner" ))..".\n"..
"Enter the correct password to gain access.\n");
else
minetest.chat_send_player(name, "This locked object is owned by "..tostring( meta:get_string( "owner" ))..".\n"..
"There is no password set. You can only gain access if the owner grants it to you.");
end end end -- lua is not the most intuitive language here....
return;
end -- of /help
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-- sanitize player input
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if( fields.locks_sent_lock_command:match("[^%a%d%s_%- /%:]")) then
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minetest.chat_send_player(name, "Input contains unsupported characters. Allowed: a-z, A-Z, 0-9, _, -, :.");
return;
end
if( #fields.locks_sent_lock_command > 60) then
minetest.chat_send_player(name, "Input too long. Only up to 80 characters supported.");
return;
end
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-- other players can only try to input the correct password
if( name ~= meta:get_string( "owner" )) then
-- no need to bother with trying other PWs if none is set...
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if( meta:get_string("password")=="" ) then
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minetest.chat_send_player(name, "There is no password set. Access denied.");
return;
end
-- the player may have entered the right password already
if( name == meta:get_string("pw_user")) then
-- nothing to do - the player entered the right pw alredy
minetest.chat_send_player(name, "You have entered the right password already. Access granted.");
return;
end
if( fields.locks_sent_lock_command ~= meta:get_string("password")) then
minetest.chat_send_player(name, "Wrong password. Access denied.");
return;
end
-- store the last user (this one) who entered the right pw
meta:set_string( "pw_user", name );
minetest.chat_send_player(name, "Password confirmed. Access granted.");
return;
end
local txt = "";
if( fields.locks_sent_lock_command == "/list" ) then
if( meta:get_string("allowed_users")=="" ) then
txt = "No other users are allowed to use this object (except those with global privs like moderators/admins).";
else
txt = "You granted the following users/groups of users access to this object:\n";
local liste = meta:get_string("allowed_users"):split( "," );
for i in ipairs( liste ) do
txt = txt.." "..tostring(liste[i]);
end
end
if( meta:get_string( "password" ) == "" ) then
txt = txt.."\nThere is no password set. That means no one can get access through a password.";
else
txt = txt.."\nThe password for this lock is: \""..tostring( meta:get_string( "password" ).."\"");
end
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if( not( minetest.get_modpath("pipeworks") )) then
txt = txt.."\nThe pipeworks mod is not installed. Install it if you wish support for tubes.";
elseif( meta:get_int( "allow_pipeworks" ) == 1 ) then
txt = txt.."\nTubes from pipeworks may be used to extract items out of/add items to this shared locked object.";
else
txt = txt.."\nInput from tubes is accepted, but output to them is denied (default).";
end
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minetest.chat_send_player(name, txt );
return;
end -- of /list
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-- toggle tube output on/off
if( fields.locks_sent_lock_command == "/pipeworks" ) then
if( meta:get_int('allow_pipeworks') == 1 ) then
meta:set_int('allow_pipeworks', 0 );
minetest.chat_send_player( name, 'Output to pipework tubes is now DISABLED (input is still acceped).');
return;
else
meta:set_int('allow_pipeworks', 1 );
minetest.chat_send_player( name, 'Output to pipework tubes is now ENABLED. Connected tubes may insert and remove items.');
return;
end
end
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-- -- all other commands take exactly one parameter
local help = fields.locks_sent_lock_command:split( " " );
print( tostring( help[1] ));
print( tostring( help[2] ));
-- set/change a password
if( help[1]=="/set" ) then
-- if empty password then delete it
if( help[2]==nil ) then
help[2] = "";
end
minetest.chat_send_player(name, "Old password: \""..tostring( meta:get_string( "password" ))..
"\"\n Changed to new password: \""..tostring( help[2]).."\".");
meta:set_string( "password", help[2]);
-- reset the list of users who typed the right password
meta:set_string("pw_users","");
if( help[2]=="") then
minetest.chat_send_player(name, "The password is empty and thus will be disabled.");
end
return;
end
if( help[2]==nil or help[2]=="") then
minetest.chat_send_player(name, "Error: Missing parameter (player name) for command \""..tostring( help[1] ).."\"." );
return;
end
-- for add and del: check if the player is already in the list
local found = false;
local anz = 0;
local liste = meta:get_string("allowed_users"):split( "," );
for i in ipairs( liste ) do
anz = anz + 1; -- count players
if( tostring( liste[i] ) == help[2] ) then
found = true;
end
end
if( help[1]=="/add" and found==true ) then
minetest.chat_send_player(name, "Player \""..tostring( help[2] ).."\" is already allowed to use this locked object. Nothing to do.");
return;
end
if( help[1]=="/del" and found==false) then
minetest.chat_send_player(name, "Player \""..tostring( help[2] ).."\" is not amongst the players allowed to use this locked object. Nothing to do.");
return;
end
if( help[1]=="/add" ) then
if( anz >= 6 ) then
minetest.chat_send_player(name, "Sorry, no more players can be added. To save space, only up to 6 players can be added. For more players please use groups!");
return;
end
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if( name == help[2] ) then
minetest.chat_send_player(name, "You are already owner of this object.");
return;
end
-- the player might try to add a playergroup
if( help[2]:sub(1,1) == ":" ) then
if( not( playergroups )) then
minetest.chat_send_player(name, "Sorry, this server does not support playergroups.");
return;
end
if( #help[2]<2 ) then
minetest.chat_send_player(name, "Please specify the name of the playergroup you want to add!");
return;
end
if( not( playergroups:is_playergroup(meta:get_string("owner"), help[2]:sub(2) ))) then
minetest.chat_send_player(name, "You do not have a playergroup named \""..tostring( help[2]:sub(2)).."\".");
return;
end
else
-- check if the player exists
local privs = minetest.get_player_privs( help[2] );
if( not( privs ) or not( privs.interact )) then
minetest.chat_send_player(name, "Player \""..help[2].."\" not found or has no interact privs.");
return;
end
end
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meta:set_string( "allowed_users", meta:get_string("allowed_users")..","..help[2] );
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if( help[2]:sub(1,1) == ":" ) then
minetest.chat_send_player(name, "All members of your playergroup "..tostring(help[2]:sub(2)).." may now use/access this locked object.");
else
minetest.chat_send_player(name, help[2].." may now use/access this locked object.");
end
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return;
end
if( help[1]=="/del" ) then
userlist = meta:get_string("allowed_users"):split( ","..help[2] );
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meta:set_string( "allowed_users", ( userlist[1] or "" )..(userlist[2] or "" ));
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minetest.chat_send_player(name, "Access for player \""..tostring(help[2]).."\" has been revoked.");
return;
end
minetest.chat_send_player(name, "Error: Command \""..tostring(help[1]).."\" not understood.");
end
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-- craftitem; that can be used to craft shared locked objects
minetest.register_craftitem("locks:lock", {
description = "Lock to lock and share objects",
image = "locks_lock16.png",
});
minetest.register_craft({
output = "locks:lock 2",
recipe = {
{'default:steel_ingot', 'default:steel_ingot','default:steel_ingot'},
{'default:steel_ingot', '', 'default:steel_ingot'},
{'', 'default:steel_ingot',''},
}
});
-- a key allowes to open your own shared locked objects
minetest.register_craftitem("locks:key", {
description = "Key to open your own shared locked objects",
image = "locks_key32.png",
});
minetest.register_craft({
output = "locks:key",
recipe = {
{'', 'default:stick', ''},
{'', 'default:steel_ingot',''},
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}
});
-- in order to open shared locked objects of other players, a keychain is needed (plus the owner has to admit it via /add playername or through /set password)
minetest.register_craftitem("locks:keychain", {
description = "Keychain to open shared locked objects of others",
image = "locks_keychain32.png",
});
minetest.register_craft({
output = "locks:keychain",
recipe = {
{'', 'default:steel_ingot', '' },
{'locks:key', 'locks:key', 'locks:key'},
}
});
dofile(minetest.get_modpath("locks").."/shared_locked_chest.lua");
dofile(minetest.get_modpath("locks").."/shared_locked_sign_wall.lua");
dofile(minetest.get_modpath("locks").."/shared_locked_xdoors2.lua");
dofile(minetest.get_modpath("locks").."/shared_locked_furnace.lua");
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