src/client/clientmedia.cpp

/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

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 "cpp_api/s_inventory.h"
#include "cpp_api/s_internal.h"
#include "inventorymanager.h"
#include "lua_api/l_inventory.h"
#include "lua_api/l_item.h"
#include "log.h"

// Return number of accepted items to be moved
int ScriptApiDetached::detached_inventory_AllowMove(
		const std::string &name,
		const std::string &from_list, int from_index,
		const std::string &to_list, int to_index,
		int count, ServerActiveObject *player)
{
	SCRIPTAPI_PRECHECKHEADER

	// Push callback function on stack
	if (!getDetachedInventoryCallback(name, "allow_move"))
		return count;

	// function(inv, from_list, from_index, to_list, to_index, count, player)
	// inv
	InventoryLocation loc;
	loc.setDetached(name);
	InvRef::create(L, loc);
	lua_pushstring(L, from_list.c_str()); // from_list
	lua_pushinteger(L, from_index + 1);   // from_index
	lua_pushstring(L, to_list.c_str());   // to_list
	lua_pushinteger(L, to_index + 1);     // to_index
	lua_pushinteger(L, count);            // count
	objectrefGetOrCreate(L, player);      // player
	if (lua_pcall(L, 7, 1, m_errorhandler))
		scriptError();
	if(!lua_isnumber(L, -1))
		throw LuaError("allow_move should return a number. name=" + name);
	int ret = luaL_checkinteger(L, -1);
	lua_pop(L, 1); // Pop integer
	return ret;
}

// Return number of accepted items to be put
int ScriptApiDetached::detached_inventory_AllowPut(
		const std::string &name,
		const std::string &listname, int index, ItemStack &stack,
		ServerActiveObject *player)
{
	SCRIPTAPI_PRECHECKHEADER

	// Push callback function on stack
	if (!getDetachedInventoryCallback(name, "allow_put"))
		return stack.count; // All will be accepted

	// Call function(inv, listname, index, stack, player)
	InventoryLocation loc;
	loc.setDetached(name);
	InvRef::create(L, loc);              // inv
	lua_pushstring(L, listname.c_str()); // listname
	lua_pushinteger(L, index + 1);       // index
	LuaItemStack::create(L, stack);      // stack
	objectrefGetOrCreate(L, player);     // player
	if (lua_pcall(L, 5, 1, m_errorhandler))
		scriptError();
	if (!lua_isnumber(L, -1))
		throw LuaError("allow_put should return a number. name=" + name);
	int ret = luaL_checkinteger(L, -1);
	lua_pop(L, 1); // Pop integer
	return ret;
}

// Return number of accepted items to be taken
int ScriptApiDetached::detached_inventory_AllowTake(
		const std::string &name,
		const std::string &listname, int index, ItemStack &stack,
		ServerActiveObject *player)
{
	SCRIPTAPI_PRECHECKHEADER

	// Push callback function on stack
	if (!getDetachedInventoryCallback(name, "allow_take"))
		return stack.count; // All will be accepted

	// Call function(inv, listname, index, stack, player)
	InventoryLocation loc;
	loc.setDetached(name);
	InvRef::create(L, loc);              // inv
	lua_pushstring(L, listname.c_str()); // listname
	lua_pushinteger(L, index + 1);       // index
	LuaItemStack::create(L, stack);      // stack
	objectrefGetOrCreate(L, player);     // player
	if (lua_pcall(L, 5, 1, m_errorhandler))
		scriptError();
	if (!lua_isnumber(L, -1))
		throw LuaError("allow_take should return a number. name=" + name);
	int ret = luaL_checkinteger(L, -1);
	lua_pop(L, 1); // Pop integer
	return ret;
}

// Report moved items
void ScriptApiDetached::detached_inventory_OnMove(
		const std::string &name,
		const std::string &from_list, int from_index,
		const std::string &to_list, int to_index,
		int count, ServerActiveObject *player)
{
	SCRIPTAPI_PRECHECKHEADER

	// Push callback function on stack
	if (!getDetachedInventoryCallback(name, "on_move"))
		return;

	// function(inv, from_list, from_index, to_list, to_index, count, player)
	// inv
	InventoryLocation loc;
	loc.setDetached(name);
	InvRef::create(L, loc);
	lua_pushstring(L, from_list.c_str()); // from_list
	lua_pushinteger(L, from_index + 1);   // from_index
	lua_pushstring(L, to_list.c_str());   // to_list
	lua_pushinteger(L, to_index + 1);     // to_index
	lua_pushinteger(L, count);            // count
	objectrefGetOrCreate(L, player);      // player
	if (lua_pcall(L, 7, 0, m_errorhandler))
		scriptError();
}

// Report put items
void ScriptApiDetached::detached_inventory_OnPut(
		const std::string &name,
		const std::string &listname, int index, ItemStack &stack,
		ServerActiveObject *player)
{
	SCRIPTAPI_PRECHECKHEADER

	// Push callback function on stack
	if (!getDetachedInventoryCallback(name, "on_put"))
		return;

	// Call function(inv, listname, index, stack, player)
	// inv
	InventoryLocation loc;
	loc.setDetached(name);
	InvRef::create(L, loc);
	lua_pushstring(L, listname.c_str()); // listname
	lua_pushinteger(L, index + 1);       // index
	LuaItemStack::create(L, stack);      // stack
	objectrefGetOrCreate(L, player);     // player
	if (lua_pcall(L, 5, 0, m_errorhandler))
		scriptError();
}

// Report taken items
void ScriptApiDetached::detached_inventory_OnTake(
		const std::string &name,
		const std::string &listname, int index, ItemStack &stack,
		ServerActiveObject *player)
{
	SCRIPTAPI_PRECHECKHEADER

	// Push callback function on stack
	if (!getDetachedInventoryCallback(name, "on_take"))
		return;

	// Call function(inv, listname, index, stack, player)
	// inv
	InventoryLocation loc;
	loc.setDetached(name);
	InvRef::create(L, loc);
	lua_pushstring(L, listname.c_str()); // listname
	lua_pushinteger(L, index + 1);       // index
	LuaItemStack::create(L, stack);      // stack
	objectrefGetOrCreate(L, player);     // player
	if (lua_pcall(L, 5, 0, m_errorhandler))
		scriptError();
}

// Retrieves core.detached_inventories[name][callbackname]
// If that is nil or on error, return false and stack is unchanged
// If that is a function, returns true and pushes the
// function onto the stack
bool ScriptApiDetached::getDetachedInventoryCallback(
		const std::string &name, const char *callbackname)
{
	lua_State *L = getStack();

	lua_getglobal(L, "core");
	lua_getfield(L, -1, "detached_inventories");
	lua_remove(L, -2);
	luaL_checktype(L, -1, LUA_TTABLE);
	lua_getfield(L, -1, name.c_str());
	lua_remove(L, -2);
	// Should be a table
	if(lua_type(L, -1) != LUA_TTABLE)
	{
		errorstream<<"Detached inventory \""<<name<<"\" not defined"<<std::endl;
		lua_pop(L, 1);
		return false;
	}
	lua_getfield(L, -1, callbackname);
	lua_remove(L, -2);
	// Should be a function or nil
	if(lua_type(L, -1) == LUA_TFUNCTION)
	{
		return true;
	}
	else if(lua_isnil(L, -1))
	{
		lua_pop(L, 1);
		return false;
	}
	else
	{
		errorstream<<"Detached inventory \""<<name<<"\" callback \""
			<<callbackname<<"\" is not a function"<<std::endl;
		lua_pop(L, 1);
		return false;
	}
}
	Commit message (Collapse)	Author	Age
*	Add PUT and DELETE request + specific method value to HTTP API (#9909)	Lejo	2020-07-29
\|
*	Server pushing media at runtime (#9961)	sfan5	2020-06-13
\|
*	Fix clang tidy error due to incorrect use of quotes for character	rubenwardy	2019-03-06
\|
*	Add referer to remote media requests. (#8135)	sofar	2019-03-05
\| \| \| \| \| \| \| \| \| \|	This sends the following header to a remote media server: Referer: minetest://<server_name>:port This was verified with CTF and the Minetest Public Remove Media server. If the servername was a plain IPv6 address it will contain `:` characters and will be encapsulated in `[]` to be a valid URI.
*	Remove remote media compatibility mode. (#8044)	sofar	2019-01-04
\| \| \| \| \| \| \| \|	The fallback code shouldn't be needed and is a remnant of the GET method that old media servers use. Clients using it are likely to just waste bandwidth and having to download the media again through the normal transfer from server method. The most reliable method is to get all missing textures therefore from the server directly and not spam the remote media server with 404s.
*	Move client-specific files to 'src/client' (#7902)	Quentin Bazin	2018-11-28
	Update Android.mk Remove 'src/client' from include_directories