SAPI: Track last executed mod and include in error messages

builtin/game/auth.lua

@@ -171,6 +171,7 @@ function core.register_authentication_handler(handler)
 	end
 	core.registered_auth_handler = handler
 	core.registered_auth_handler_modname = core.get_current_modname()
+	handler.mod_origin = core.registered_auth_handler_modname
 end
 
 function core.get_auth_handler()

builtin/game/chatcommands.lua

@@ -10,6 +10,7 @@ function core.register_chatcommand(cmd, def)
 	def.params = def.params or ""
 	def.description = def.description or ""
 	def.privs = def.privs or {}
+	def.mod_origin = core.get_current_modname() or "??"
 	core.chatcommands[cmd] = def
 end
 
@@ -37,6 +38,7 @@ core.register_on_chat_message(function(name, message)
 	end
 	local has_privs, missing_privs = core.check_player_privs(name, cmd_def.privs)
 	if has_privs then
+		core.set_last_run_mod(cmd_def.mod_origin)
 		local success, message = cmd_def.func(name, param)
 		if message then
 			core.chat_send_player(name, message)

builtin/game/detached_inventory.lua

@@ -13,6 +13,7 @@ function core.create_detached_inventory(name, callbacks)
 		stuff.on_put = callbacks.on_put
 		stuff.on_take = callbacks.on_take
 	end
+	stuff.mod_origin = core.get_current_modname() or "??"
 	core.detached_inventories[name] = stuff
 	return core.create_detached_inventory_raw(name)
 end

builtin/game/item.lua

@@ -479,6 +479,15 @@ function core.node_dig(pos, node, digger)
 	-- Run script hook
 	local _, callback
 	for _, callback in ipairs(core.registered_on_dignodes) do
+		local origin = core.callback_origins[callback]
+		if origin then
+			core.set_last_run_mod(origin.mod)
+			--print("Running " .. tostring(callback) ..
+			--	" (a " .. origin.name .. " callback in " .. origin.mod .. ")")
+		else
+			--print("No data associated with callback")
+		end
+
 		-- Copy pos and node because callback can modify them
 		local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
 		local node_copy = {name=node.name, param1=node.param1, param2=node.param2}

builtin/game/misc.lua

@@ -14,6 +14,7 @@ local function update_timers(delay)
 		local timer = timers[index]
 		timer.time = timer.time - delay
 		if timer.time <= 0 then
+			core.set_last_run_mod(timer.mod_origin)
 			timer.func(unpack(timer.args or {}))
 			table.remove(timers, index)
 			sub = sub + 1
@@ -55,12 +56,22 @@ function core.after(time, func, ...)
 			"Invalid core.after invocation")
 	if not mintime then
 		mintime = time
-		timers_to_add = {{time=time+delay, func=func, args={...}}}
+		timers_to_add = {{
+			time   = time+delay,
+			func   = func,
+			args   = {...},
+			mod_origin = core.get_last_run_mod(),
+		}}
 		return
 	end
 	mintime = math.min(mintime, time)
 	timers_to_add = timers_to_add or {}
-	timers_to_add[#timers_to_add+1] = {time=time+delay, func=func, args={...}}
+	timers_to_add[#timers_to_add+1] = {
+		time   = time+delay,
+		func   = func,
+		args   = {...},
+		mod_origin = core.get_last_run_mod(),
+	}
 end
 
 function core.check_player_privs(name, privs)

builtin/game/register.lua

@@ -72,6 +72,7 @@ end
 function core.register_abm(spec)
 	-- Add to core.registered_abms
 	core.registered_abms[#core.registered_abms+1] = spec
+	spec.mod_origin = core.get_current_modname() or "??"
 end
 
 function core.register_entity(name, prototype)
@@ -86,6 +87,7 @@ function core.register_entity(name, prototype)
 
 	-- Add to core.registered_entities
 	core.registered_entities[name] = prototype
+	prototype.mod_origin = core.get_current_modname() or "??"
 end
 
 function core.register_item(name, itemdef)
@@ -147,6 +149,8 @@ function core.register_item(name, itemdef)
 	end
 	-- END Legacy stuff
 
+	itemdef.mod_origin = core.get_current_modname() or "??"
+
 	-- Disable all further modifications
 	getmetatable(itemdef).__newindex = {}
 
@@ -326,6 +330,8 @@ function core.override_item(name, redefinition)
 end
 
 
+core.callback_origins = {}
+
 function core.run_callbacks(callbacks, mode, ...)
 	assert(type(callbacks) == "table")
 	local cb_len = #callbacks
@@ -338,6 +344,14 @@ function core.run_callbacks(callbacks, mode, ...)
 	end
 	local ret = nil
 	for i = 1, cb_len do
+		local origin = core.callback_origins[callbacks[i]]
+		if origin then
+			core.set_last_run_mod(origin.mod)
+			--print("Running " .. tostring(callbacks[i]) ..
+			--	" (a " .. origin.name .. " callback in " .. origin.mod .. ")")
+		else
+			--print("No data associated with callback")
+		end
 		local cb_ret = callbacks[i](...)
 
 		if mode == 0 and i == 1 then
@@ -370,13 +384,29 @@ end
 
 local function make_registration()
 	local t = {}
-	local registerfunc = function(func) table.insert(t, func) end
+	local registerfunc = function(func)
+		table.insert(t, func)
+		core.callback_origins[func] = {
+			mod = core.get_current_modname() or "??",
+			name = debug.getinfo(1, "n").name or "??"
+		}
+		--local origin = core.callback_origins[func]
+		--print(origin.name .. ": " .. origin.mod .. " registering cbk " .. tostring(func))
+	end
 	return t, registerfunc
 end
 
 local function make_registration_reverse()
 	local t = {}
-	local registerfunc = function(func) table.insert(t, 1, func) end
+	local registerfunc = function(func)
+		table.insert(t, 1, func)
+		core.callback_origins[func] = {
+			mod = core.get_current_modname() or "??",
+			name = debug.getinfo(1, "n").name or "??"
+		}
+		--local origin = core.callback_origins[func]
+		--print(origin.name .. ": " .. origin.mod .. " registering cbk " .. tostring(func))
+	end
 	return t, registerfunc
 end
 
@@ -408,6 +438,7 @@ local function make_registration_wrap(reg_fn_name, clear_fn_name)
 end
 
 core.registered_on_player_hpchanges = { modifiers = { }, loggers = { } }
+
 function core.registered_on_player_hpchange(player, hp_change)
 	local last = false
 	for i = #core.registered_on_player_hpchanges.modifiers, 1, -1 do
@@ -427,12 +458,17 @@ function core.registered_on_player_hpchange(player, hp_change)
 	end
 	return hp_change
 end
+
 function core.register_on_player_hpchange(func, modifier)
 	if modifier then
 		table.insert(core.registered_on_player_hpchanges.modifiers, func)
 	else
 		table.insert(core.registered_on_player_hpchanges.loggers, func)
 	end
+	core.callback_origins[func] = {
+		mod = core.get_current_modname() or "??",
+		name = debug.getinfo(1, "n").name or "??"
+	}
 end
 
 core.registered_biomes      = make_registration_wrap("register_biome",      "clear_registered_biomes")