keeps track of a player's last login as a unix timestamp, adds lua function minetest.get_player_last_online(<name>) to access that information

in lua mods

src/content_sao.cpp

@@ -1485,3 +1485,9 @@ bool PlayerSAO::getCollisionBox(aabb3f *toset) {
 
 	return true;
 }
+
+int PlayerSAO::getLastOnline()
+{
+	return m_player->last_online;
+}
+

src/content_sao.h

@@ -237,6 +237,7 @@ public:
 	}
 
 	bool getCollisionBox(aabb3f *toset);
+	int getLastOnline();
 
 private:
 	std::string getPropertyPacket();

src/player.cpp

@@ -38,6 +38,7 @@ Player::Player(IGameDef *gamedef):
 	hp(PLAYER_MAX_HP),
 	breath(-1),
 	peer_id(PEER_ID_INEXISTENT),
+	last_online(0),
 // protected
 	m_gamedef(gamedef),
 	m_pitch(0),
@@ -50,6 +51,7 @@ Player::Player(IGameDef *gamedef):
 	m_last_pos(0,0,0),
 	m_last_hp(PLAYER_MAX_HP),
 	m_last_inventory(gamedef->idef())
+	
 {
 	updateName("<not set>");
 	inventory.clear();
@@ -177,6 +179,7 @@ void Player::serialize(std::ostream &os)
 	args.setFloat("yaw", m_yaw);
 	args.setV3F("position", m_position);
 	args.setS32("hp", hp);
+	args.setS32("last_online",last_online);
 
 	args.writeLines(os);
 
@@ -214,6 +217,12 @@ void Player::deSerialize(std::istream &is, std::string playername)
 		hp = 20;
 	}
 
+	try{
+		last_online = args.getS32("last_online");
+	} catch ( SettingNotFoundException &e ){
+		last_online = time(NULL);
+	}
+
 	inventory.deSerialize(is);
 
 	if(inventory.getList("craftpreview") == NULL)

src/player.h

@@ -180,6 +180,16 @@ public:
 		return m_name;
 	}
 
+	u32 getLastOnline()
+	{
+		return last_online;
+	}
+
+	virtual	void setLastOnline( u32 lo ) 
+	{
+		last_online = lo;
+	}
+
 	core::aabbox3d<f32> getCollisionbox() {
 		return m_collisionbox;
 	}
@@ -269,6 +279,7 @@ public:
 	std::vector<HudElement *> hud;
 	u32 hud_flags;
 	s32 hud_hotbar_itemcount;
+	u32 last_online;
 
 protected:
 	IGameDef *m_gamedef;
@@ -283,7 +294,7 @@ protected:
 	f32 m_last_pitch;
 	f32 m_last_yaw;
 	v3f m_last_pos;
-	u16 m_last_hp;
+	u16 m_last_hp;	
 	Inventory m_last_inventory;
 };
 

src/script/lua_api/luaapi.cpp

@@ -77,6 +77,7 @@ bool ModApiBasic::Initialize(lua_State* L,int top) {
 
 	retval &= API_FCT(get_player_privs);
 	retval &= API_FCT(get_player_ip);
+	retval &= API_FCT(get_player_last_online);
 	retval &= API_FCT(get_ban_list);
 	retval &= API_FCT(get_ban_description);
 	retval &= API_FCT(ban_player);
@@ -335,6 +336,23 @@ int ModApiBasic::l_get_player_ip(lua_State *L)
 	}
 }
 
+// get_player_last_online()
+int ModApiBasic::l_get_player_last_online(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+	const char * name = luaL_checkstring(L, 1);
+	Player *player = getEnv(L)->getPlayer(name);
+	if ( player == NULL )
+	{
+		lua_pushnil(L);
+		return 1;
+	}
+
+	lua_pushnumber(L,(double)player->getLastOnline());
+
+	return 1;
+}
+
 // get_ban_list()
 int ModApiBasic::l_get_ban_list(lua_State *L)
 {

src/script/lua_api/luaapi.h

@@ -72,6 +72,9 @@ private:
 	// get_player_ip()
 	static int l_get_player_ip(lua_State *L);
 
+	// get_player_last_online()
+	static int l_get_player_last_online(lua_State *L);
+
 	// get_ban_list()
 	static int l_get_ban_list(lua_State *L);
 

src/server.cpp

@@ -2161,6 +2161,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 
 			actionstream<<player->getName()<<" ["<<addr_s<<"] "<<" joins game. List of players: "
 					<<os.str()<<std::endl;
+			player->setLastOnline(time(NULL));
 		}
 
 		return;