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-rw-r--r--src/network/CMakeLists.txt16
-rw-r--r--src/network/clientopcodes.cpp213
-rw-r--r--src/network/clientopcodes.h52
-rw-r--r--src/network/clientpackethandler.cpp1211
-rw-r--r--src/network/connection.cpp3102
-rw-r--r--src/network/connection.h1096
-rw-r--r--src/network/networkpacket.cpp520
-rw-r--r--src/network/networkpacket.h131
-rw-r--r--src/network/networkprotocol.h966
-rw-r--r--src/network/serveropcodes.cpp213
-rw-r--r--src/network/serveropcodes.h52
-rw-r--r--src/network/serverpackethandler.cpp2086
12 files changed, 9658 insertions, 0 deletions
diff --git a/src/network/CMakeLists.txt b/src/network/CMakeLists.txt
new file mode 100644
index 000000000..3805c323d
--- /dev/null
+++ b/src/network/CMakeLists.txt
@@ -0,0 +1,16 @@
+set(common_network_SRCS
+ ${CMAKE_CURRENT_SOURCE_DIR}/connection.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/networkpacket.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/serverpackethandler.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/serveropcodes.cpp
+ PARENT_SCOPE
+)
+
+if (BUILD_CLIENT)
+ set(client_network_SRCS
+ ${CMAKE_CURRENT_SOURCE_DIR}/clientopcodes.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/clientpackethandler.cpp
+ PARENT_SCOPE
+ )
+endif()
+
diff --git a/src/network/clientopcodes.cpp b/src/network/clientopcodes.cpp
new file mode 100644
index 000000000..3364de8c5
--- /dev/null
+++ b/src/network/clientopcodes.cpp
@@ -0,0 +1,213 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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 "clientopcodes.h"
+
+const static ToClientCommandHandler null_command_handler = {"TOCLIENT_NULL", TOCLIENT_STATE_ALL, &Client::handleCommand_Null};
+
+const ToClientCommandHandler toClientCommandTable[TOCLIENT_NUM_MSG_TYPES] =
+{
+ null_command_handler, // 0x00 (never use this)
+ null_command_handler, // 0x01
+ { "TOCLIENT_HELLO", TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_Hello }, // 0x02
+ { "TOCLIENT_AUTH_ACCEPT", TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_AuthAccept }, // 0x03
+ { "TOCLIENT_ACCEPT_SUDO_MODE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AcceptSudoMode}, // 0x04
+ { "TOCLIENT_DENY_SUDO_MODE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DenySudoMode}, // 0x05
+ null_command_handler, // 0x06
+ null_command_handler, // 0x07
+ null_command_handler, // 0x08
+ null_command_handler, // 0x09
+ { "TOCLIENT_ACCESS_DENIED", TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_AccessDenied }, // 0x0A
+ null_command_handler, // 0x0B
+ null_command_handler, // 0x0C
+ null_command_handler, // 0x0D
+ null_command_handler, // 0x0E
+ null_command_handler, // 0x0F
+ { "TOCLIENT_INIT", TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_InitLegacy }, // 0x10
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ { "TOCLIENT_BLOCKDATA", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_BlockData }, // 0x20
+ { "TOCLIENT_ADDNODE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AddNode }, // 0x21
+ { "TOCLIENT_REMOVENODE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_RemoveNode }, // 0x22
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ { "TOCLIENT_INVENTORY", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Inventory }, // 0x27
+ null_command_handler,
+ { "TOCLIENT_TIME_OF_DAY", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_TimeOfDay }, // 0x29
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ { "TOCLIENT_CHAT_MESSAGE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ChatMessage }, // 0x30
+ { "TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ActiveObjectRemoveAdd }, // 0x31
+ { "TOCLIENT_ACTIVE_OBJECT_MESSAGES", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ActiveObjectMessages }, // 0x32
+ { "TOCLIENT_HP", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HP }, // 0x33
+ { "TOCLIENT_MOVE_PLAYER", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_MovePlayer }, // 0x34
+ { "TOCLIENT_ACCESS_DENIED_LEGACY", TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_AccessDenied }, // 0x35
+ { "TOCLIENT_PLAYERITEM", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_PlayerItem }, // 0x36
+ { "TOCLIENT_DEATHSCREEN", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DeathScreen }, // 0x37
+ { "TOCLIENT_MEDIA", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Media }, // 0x38
+ { "TOCLIENT_TOOLDEF", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ToolDef }, // 0x39
+ { "TOCLIENT_NODEDEF", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_NodeDef }, // 0x3a
+ { "TOCLIENT_CRAFTITEMDEF", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_CraftItemDef }, // 0x3b
+ { "TOCLIENT_ANNOUNCE_MEDIA", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AnnounceMedia }, // 0x3c
+ { "TOCLIENT_ITEMDEF", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ItemDef }, // 0x3d
+ null_command_handler,
+ { "TOCLIENT_PLAY_SOUND", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_PlaySound }, // 0x3f
+ { "TOCLIENT_STOP_SOUND", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_StopSound }, // 0x40
+ { "TOCLIENT_PRIVILEGES", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Privileges }, // 0x41
+ { "TOCLIENT_INVENTORY_FORMSPEC", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_InventoryFormSpec }, // 0x42
+ { "TOCLIENT_DETACHED_INVENTORY", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DetachedInventory }, // 0x43
+ { "TOCLIENT_SHOW_FORMSPEC", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ShowFormSpec }, // 0x44
+ { "TOCLIENT_MOVEMENT", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Movement }, // 0x45
+ { "TOCLIENT_SPAWN_PARTICLE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_SpawnParticle }, // 0x46
+ { "TOCLIENT_ADD_PARTICLESPAWNER", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_AddParticleSpawner }, // 0x47
+ { "TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DeleteParticleSpawner }, // 0x48
+ { "TOCLIENT_HUDADD", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudAdd }, // 0x49
+ { "TOCLIENT_HUDRM", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudRemove }, // 0x4a
+ { "TOCLIENT_HUDCHANGE", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudChange }, // 0x4b
+ { "TOCLIENT_HUD_SET_FLAGS", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudSetFlags }, // 0x4c
+ { "TOCLIENT_HUD_SET_PARAM", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudSetParam }, // 0x4d
+ { "TOCLIENT_BREATH", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_Breath }, // 0x4e
+ { "TOCLIENT_SET_SKY", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_HudSetSky }, // 0x4f
+ { "TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_OverrideDayNightRatio }, // 0x50
+ { "TOCLIENT_LOCAL_PLAYER_ANIMATIONS", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_LocalPlayerAnimations }, // 0x51
+ { "TOCLIENT_EYE_OFFSET", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_EyeOffset }, // 0x52
+ { "TOCLIENT_DELETE_PARTICLESPAWNER", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_DeleteParticleSpawner }, // 0x53
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ null_command_handler,
+ { "TOCLIENT_SRP_BYTES_S_B", TOCLIENT_STATE_NOT_CONNECTED, &Client::handleCommand_SrpBytesSandB }, // 0x60
+};
+
+const static ServerCommandFactory null_command_factory = { "TOSERVER_NULL", 0, false };
+
+const ServerCommandFactory serverCommandFactoryTable[TOSERVER_NUM_MSG_TYPES] =
+{
+ null_command_factory, // 0x00
+ null_command_factory, // 0x01
+ { "TOSERVER_INIT", 1, false }, // 0x02
+ null_command_factory, // 0x03
+ null_command_factory, // 0x04
+ null_command_factory, // 0x05
+ null_command_factory, // 0x06
+ null_command_factory, // 0x07
+ null_command_factory, // 0x08
+ null_command_factory, // 0x09
+ null_command_factory, // 0x0a
+ null_command_factory, // 0x0b
+ null_command_factory, // 0x0c
+ null_command_factory, // 0x0d
+ null_command_factory, // 0x0e
+ null_command_factory, // 0x0F
+ { "TOSERVER_INIT_LEGACY", 1, false }, // 0x10
+ { "TOSERVER_INIT2", 1, true }, // 0x11
+ null_command_factory, // 0x12
+ null_command_factory, // 0x13
+ null_command_factory, // 0x14
+ null_command_factory, // 0x15
+ null_command_factory, // 0x16
+ null_command_factory, // 0x17
+ null_command_factory, // 0x18
+ null_command_factory, // 0x19
+ null_command_factory, // 0x1a
+ null_command_factory, // 0x1b
+ null_command_factory, // 0x1c
+ null_command_factory, // 0x1d
+ null_command_factory, // 0x1e
+ null_command_factory, // 0x1f
+ null_command_factory, // 0x20
+ null_command_factory, // 0x21
+ null_command_factory, // 0x22
+ { "TOSERVER_PLAYERPOS", 0, false }, // 0x23
+ { "TOSERVER_GOTBLOCKS", 2, true }, // 0x24
+ { "TOSERVER_DELETEDBLOCKS", 2, true }, // 0x25
+ null_command_factory, // 0x26
+ { "TOSERVER_CLICK_OBJECT", 0, false }, // 0x27
+ { "TOSERVER_GROUND_ACTION", 0, false }, // 0x28
+ { "TOSERVER_RELEASE", 0, false }, // 0x29
+ null_command_factory, // 0x2a
+ null_command_factory, // 0x2b
+ null_command_factory, // 0x2c
+ null_command_factory, // 0x2d
+ null_command_factory, // 0x2e
+ null_command_factory, // 0x2f
+ { "TOSERVER_SIGNTEXT", 0, false }, // 0x30
+ { "TOSERVER_INVENTORY_ACTION", 0, true }, // 0x31
+ { "TOSERVER_CHAT_MESSAGE", 0, true }, // 0x32
+ { "TOSERVER_SIGNNODETEXT", 0, false }, // 0x33
+ { "TOSERVER_CLICK_ACTIVEOBJECT", 0, false }, // 0x34
+ { "TOSERVER_DAMAGE", 0, true }, // 0x35
+ { "TOSERVER_PASSWORD_LEGACY", 0, true }, // 0x36
+ { "TOSERVER_PLAYERITEM", 0, true }, // 0x37
+ { "TOSERVER_RESPAWN", 0, true }, // 0x38
+ { "TOSERVER_INTERACT", 0, true }, // 0x39
+ { "TOSERVER_REMOVED_SOUNDS", 1, true }, // 0x3a
+ { "TOSERVER_NODEMETA_FIELDS", 0, true }, // 0x3b
+ { "TOSERVER_INVENTORY_FIELDS", 0, true }, // 0x3c
+ null_command_factory, // 0x3d
+ null_command_factory, // 0x3e
+ null_command_factory, // 0x3f
+ { "TOSERVER_REQUEST_MEDIA", 1, true }, // 0x40
+ { "TOSERVER_RECEIVED_MEDIA", 1, true }, // 0x41
+ { "TOSERVER_BREATH", 0, true }, // 0x42
+ { "TOSERVER_CLIENT_READY", 0, true }, // 0x43
+ null_command_factory, // 0x44
+ null_command_factory, // 0x45
+ null_command_factory, // 0x46
+ null_command_factory, // 0x47
+ null_command_factory, // 0x48
+ null_command_factory, // 0x49
+ null_command_factory, // 0x4a
+ null_command_factory, // 0x4b
+ null_command_factory, // 0x4c
+ null_command_factory, // 0x4d
+ null_command_factory, // 0x4e
+ null_command_factory, // 0x4f
+ { "TOSERVER_FIRST_SRP", 1, true }, // 0x50
+ { "TOSERVER_SRP_BYTES_A", 1, true }, // 0x51
+ { "TOSERVER_SRP_BYTES_M", 1, true }, // 0x52
+};
diff --git a/src/network/clientopcodes.h b/src/network/clientopcodes.h
new file mode 100644
index 000000000..9143865b8
--- /dev/null
+++ b/src/network/clientopcodes.h
@@ -0,0 +1,52 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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.
+*/
+
+#ifndef CLIENTOPCODES_HEADER
+#define CLIENTOPCODES_HEADER
+
+#include "client.h"
+#include "networkprotocol.h"
+#include "networkpacket.h"
+
+enum ToClientConnectionState {
+ TOCLIENT_STATE_NOT_CONNECTED,
+ TOCLIENT_STATE_CONNECTED,
+ TOCLIENT_STATE_ALL,
+};
+
+struct ToClientCommandHandler
+{
+ const char* name;
+ ToClientConnectionState state;
+ void (Client::*handler)(NetworkPacket* pkt);
+};
+
+struct ServerCommandFactory
+{
+ const char* name;
+ u16 channel;
+ bool reliable;
+};
+
+extern const ToClientCommandHandler toClientCommandTable[TOCLIENT_NUM_MSG_TYPES];
+
+extern const ServerCommandFactory serverCommandFactoryTable[TOSERVER_NUM_MSG_TYPES];
+
+#endif
diff --git a/src/network/clientpackethandler.cpp b/src/network/clientpackethandler.cpp
new file mode 100644
index 000000000..86091bc88
--- /dev/null
+++ b/src/network/clientpackethandler.cpp
@@ -0,0 +1,1211 @@
+/*
+Minetest
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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 "client.h"
+
+#include "util/base64.h"
+#include "clientmedia.h"
+#include "log.h"
+#include "map.h"
+#include "mapsector.h"
+#include "nodedef.h"
+#include "serialization.h"
+#include "server.h"
+#include "strfnd.h"
+#include "network/clientopcodes.h"
+#include "util/serialize.h"
+#include "util/srp.h"
+
+void Client::handleCommand_Deprecated(NetworkPacket* pkt)
+{
+ infostream << "Got deprecated command "
+ << toClientCommandTable[pkt->getCommand()].name << " from peer "
+ << pkt->getPeerId() << "!" << std::endl;
+}
+
+void Client::handleCommand_Hello(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 1)
+ return;
+
+ u8 serialization_ver;
+ u16 proto_ver;
+ u16 compression_mode;
+ u32 auth_mechs;
+ std::string username_legacy; // for case insensitivity
+ *pkt >> serialization_ver >> compression_mode >> proto_ver
+ >> auth_mechs >> username_legacy;
+
+ // Chose an auth method we support
+ AuthMechanism chosen_auth_mechanism = choseAuthMech(auth_mechs);
+
+ infostream << "Client: TOCLIENT_HELLO received with "
+ << "serialization_ver=" << (u32)serialization_ver
+ << ", auth_mechs=" << auth_mechs
+ << ", proto_ver=" << proto_ver
+ << ", compression_mode=" << compression_mode
+ << ". Doing auth with mech " << chosen_auth_mechanism << std::endl;
+
+ if (!ser_ver_supported(serialization_ver)) {
+ infostream << "Client: TOCLIENT_HELLO: Server sent "
+ << "unsupported ser_fmt_ver"<< std::endl;
+ return;
+ }
+
+ m_server_ser_ver = serialization_ver;
+ m_proto_ver = proto_ver;
+
+ //TODO verify that username_legacy matches sent username, only
+ // differs in casing (make both uppercase and compare)
+ // This is only neccessary though when we actually want to add casing support
+
+ if (m_chosen_auth_mech != AUTH_MECHANISM_NONE) {
+ // we recieved a TOCLIENT_HELLO while auth was already going on
+ errorstream << "Client: TOCLIENT_HELLO while auth was already going on"
+ << "(chosen_mech=" << m_chosen_auth_mech << ")." << std::endl;
+ if ((m_chosen_auth_mech == AUTH_MECHANISM_SRP)
+ || (m_chosen_auth_mech == AUTH_MECHANISM_LEGACY_PASSWORD)) {
+ srp_user_delete((SRPUser *) m_auth_data);
+ m_auth_data = 0;
+ }
+ }
+
+ // Authenticate using that method, or abort if there wasn't any method found
+ if (chosen_auth_mechanism != AUTH_MECHANISM_NONE) {
+ startAuth(chosen_auth_mechanism);
+ } else {
+ m_chosen_auth_mech = AUTH_MECHANISM_NONE;
+ m_access_denied = true;
+ m_access_denied_reason = "Unknown";
+ m_con.Disconnect();
+ }
+
+}
+
+void Client::handleCommand_AuthAccept(NetworkPacket* pkt)
+{
+ deleteAuthData();
+
+ v3f playerpos;
+ *pkt >> playerpos >> m_map_seed >> m_recommended_send_interval
+ >> m_sudo_auth_methods;
+
+ playerpos -= v3f(0, BS / 2, 0);
+
+ // Set player position
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+ player->setPosition(playerpos);
+
+ infostream << "Client: received map seed: " << m_map_seed << std::endl;
+ infostream << "Client: received recommended send interval "
+ << m_recommended_send_interval<<std::endl;
+
+ // Reply to server
+ NetworkPacket resp_pkt(TOSERVER_INIT2, 0);
+ Send(&resp_pkt);
+
+ m_state = LC_Init;
+}
+void Client::handleCommand_AcceptSudoMode(NetworkPacket* pkt)
+{
+ deleteAuthData();
+
+ m_password = m_new_password;
+
+ verbosestream << "Client: Recieved TOCLIENT_ACCEPT_SUDO_MODE." << std::endl;
+
+ // send packet to actually set the password
+ startAuth(AUTH_MECHANISM_FIRST_SRP);
+
+ // reset again
+ m_chosen_auth_mech = AUTH_MECHANISM_NONE;
+}
+void Client::handleCommand_DenySudoMode(NetworkPacket* pkt)
+{
+ m_chat_queue.push(L"Password change denied. Password NOT changed.");
+ // reset everything and be sad
+ deleteAuthData();
+}
+void Client::handleCommand_InitLegacy(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 1)
+ return;
+
+ u8 server_ser_ver;
+ *pkt >> server_ser_ver;
+
+ infostream << "Client: TOCLIENT_INIT_LEGACY received with "
+ "server_ser_ver=" << ((int)server_ser_ver & 0xff) << std::endl;
+
+ if (!ser_ver_supported(server_ser_ver)) {
+ infostream << "Client: TOCLIENT_INIT_LEGACY: Server sent "
+ << "unsupported ser_fmt_ver"<< std::endl;
+ return;
+ }
+
+ m_server_ser_ver = server_ser_ver;
+
+ // We can be totally wrong with this guess
+ // but we only need some value < 25.
+ m_proto_ver = 24;
+
+ // Get player position
+ v3s16 playerpos_s16(0, BS * 2 + BS * 20, 0);
+ if (pkt->getSize() >= 1 + 6) {
+ *pkt >> playerpos_s16;
+ }
+ v3f playerpos_f = intToFloat(playerpos_s16, BS) - v3f(0, BS / 2, 0);
+
+
+ // Set player position
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+ player->setPosition(playerpos_f);
+
+ if (pkt->getSize() >= 1 + 6 + 8) {
+ // Get map seed
+ *pkt >> m_map_seed;
+ infostream << "Client: received map seed: " << m_map_seed << std::endl;
+ }
+
+ if (pkt->getSize() >= 1 + 6 + 8 + 4) {
+ *pkt >> m_recommended_send_interval;
+ infostream << "Client: received recommended send interval "
+ << m_recommended_send_interval<<std::endl;
+ }
+
+ // Reply to server
+ NetworkPacket resp_pkt(TOSERVER_INIT2, 0);
+ Send(&resp_pkt);
+
+ m_state = LC_Init;
+}
+
+void Client::handleCommand_AccessDenied(NetworkPacket* pkt)
+{
+ // The server didn't like our password. Note, this needs
+ // to be processed even if the serialisation format has
+ // not been agreed yet, the same as TOCLIENT_INIT.
+ m_access_denied = true;
+ m_access_denied_reason = "Unknown";
+
+ if (pkt->getCommand() == TOCLIENT_ACCESS_DENIED) {
+ if (pkt->getSize() < 1)
+ return;
+
+ u8 denyCode = SERVER_ACCESSDENIED_UNEXPECTED_DATA;
+ *pkt >> denyCode;
+ if (denyCode == SERVER_ACCESSDENIED_SHUTDOWN ||
+ denyCode == SERVER_ACCESSDENIED_CRASH) {
+ *pkt >> m_access_denied_reason;
+ if (m_access_denied_reason == "") {
+ m_access_denied_reason = accessDeniedStrings[denyCode];
+ }
+ u8 reconnect;
+ *pkt >> reconnect;
+ m_access_denied_reconnect = reconnect & 1;
+ } else if (denyCode == SERVER_ACCESSDENIED_CUSTOM_STRING) {
+ *pkt >> m_access_denied_reason;
+ } else if (denyCode < SERVER_ACCESSDENIED_MAX) {
+ m_access_denied_reason = accessDeniedStrings[denyCode];
+ } else {
+ // Allow us to add new error messages to the
+ // protocol without raising the protocol version, if we want to.
+ // Until then (which may be never), this is outside
+ // of the defined protocol.
+ *pkt >> m_access_denied_reason;
+ if (m_access_denied_reason == "") {
+ m_access_denied_reason = "Unknown";
+ }
+ }
+ }
+ // 13/03/15 Legacy code from 0.4.12 and lesser. must stay 1 year
+ // for compat with old clients
+ else {
+ if (pkt->getSize() >= 2) {
+ std::wstring wide_reason;
+ *pkt >> wide_reason;
+ m_access_denied_reason = wide_to_utf8(wide_reason);
+ }
+ }
+}
+
+void Client::handleCommand_RemoveNode(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 6)
+ return;
+
+ v3s16 p;
+ *pkt >> p;
+ removeNode(p);
+}
+
+void Client::handleCommand_AddNode(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 6 + MapNode::serializedLength(m_server_ser_ver))
+ return;
+
+ v3s16 p;
+ *pkt >> p;
+
+ MapNode n;
+ n.deSerialize(pkt->getU8Ptr(6), m_server_ser_ver);
+
+ bool remove_metadata = true;
+ u32 index = 6 + MapNode::serializedLength(m_server_ser_ver);
+ if ((pkt->getSize() >= index + 1) && pkt->getU8(index)) {
+ remove_metadata = false;
+ }
+
+ addNode(p, n, remove_metadata);
+}
+void Client::handleCommand_BlockData(NetworkPacket* pkt)
+{
+ // Ignore too small packet
+ if (pkt->getSize() < 6)
+ return;
+
+ v3s16 p;
+ *pkt >> p;
+
+ std::string datastring(pkt->getString(6), pkt->getSize() - 6);
+ std::istringstream istr(datastring, std::ios_base::binary);
+
+ MapSector *sector;
+ MapBlock *block;
+
+ v2s16 p2d(p.X, p.Z);
+ sector = m_env.getMap().emergeSector(p2d);
+
+ assert(sector->getPos() == p2d);
+
+ block = sector->getBlockNoCreateNoEx(p.Y);
+ if (block) {
+ /*
+ Update an existing block
+ */
+ block->deSerialize(istr, m_server_ser_ver, false);
+ block->deSerializeNetworkSpecific(istr);
+ }
+ else {
+ /*
+ Create a new block
+ */
+ block = new MapBlock(&m_env.getMap(), p, this);
+ block->deSerialize(istr, m_server_ser_ver, false);
+ block->deSerializeNetworkSpecific(istr);
+ sector->insertBlock(block);
+ }
+
+ if (m_localdb) {
+ ServerMap::saveBlock(block, m_localdb);
+ }
+
+ /*
+ Add it to mesh update queue and set it to be acknowledged after update.
+ */
+ addUpdateMeshTaskWithEdge(p, true);
+}
+
+void Client::handleCommand_Inventory(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 1)
+ return;
+
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ player->inventory.deSerialize(is);
+
+ m_inventory_updated = true;
+
+ delete m_inventory_from_server;
+ m_inventory_from_server = new Inventory(player->inventory);
+ m_inventory_from_server_age = 0.0;
+}
+
+void Client::handleCommand_TimeOfDay(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 2)
+ return;
+
+ u16 time_of_day;
+
+ *pkt >> time_of_day;
+
+ time_of_day = time_of_day % 24000;
+ float time_speed = 0;
+
+ if (pkt->getSize() >= 2 + 4) {
+ *pkt >> time_speed;
+ }
+ else {
+ // Old message; try to approximate speed of time by ourselves
+ float time_of_day_f = (float)time_of_day / 24000.0;
+ float tod_diff_f = 0;
+
+ if (time_of_day_f < 0.2 && m_last_time_of_day_f > 0.8)
+ tod_diff_f = time_of_day_f - m_last_time_of_day_f + 1.0;
+ else
+ tod_diff_f = time_of_day_f - m_last_time_of_day_f;
+
+ m_last_time_of_day_f = time_of_day_f;
+ float time_diff = m_time_of_day_update_timer;
+ m_time_of_day_update_timer = 0;
+
+ if (m_time_of_day_set) {
+ time_speed = (3600.0 * 24.0) * tod_diff_f / time_diff;
+ infostream << "Client: Measured time_of_day speed (old format): "
+ << time_speed << " tod_diff_f=" << tod_diff_f
+ << " time_diff=" << time_diff << std::endl;
+ }
+ }
+
+ // Update environment
+ m_env.setTimeOfDay(time_of_day);
+ m_env.setTimeOfDaySpeed(time_speed);
+ m_time_of_day_set = true;
+
+ u32 dr = m_env.getDayNightRatio();
+ infostream << "Client: time_of_day=" << time_of_day
+ << " time_speed=" << time_speed
+ << " dr=" << dr << std::endl;
+}
+
+void Client::handleCommand_ChatMessage(NetworkPacket* pkt)
+{
+ /*
+ u16 command
+ u16 length
+ wstring message
+ */
+ u16 len, read_wchar;
+
+ *pkt >> len;
+
+ std::wstring message;
+ for (u32 i = 0; i < len; i++) {
+ *pkt >> read_wchar;
+ message += (wchar_t)read_wchar;
+ }
+
+ m_chat_queue.push(message);
+}
+
+void Client::handleCommand_ActiveObjectRemoveAdd(NetworkPacket* pkt)
+{
+ /*
+ u16 count of removed objects
+ for all removed objects {
+ u16 id
+ }
+ u16 count of added objects
+ for all added objects {
+ u16 id
+ u8 type
+ u32 initialization data length
+ string initialization data
+ }
+ */
+
+ try {
+ u8 type;
+ u16 removed_count, added_count, id;
+
+ // Read removed objects
+ *pkt >> removed_count;
+
+ for (u16 i = 0; i < removed_count; i++) {
+ *pkt >> id;
+ m_env.removeActiveObject(id);
+ }
+
+ // Read added objects
+ *pkt >> added_count;
+
+ for (u16 i = 0; i < added_count; i++) {
+ *pkt >> id >> type;
+ m_env.addActiveObject(id, type, pkt->readLongString());
+ }
+ } catch (PacketError &e) {
+ infostream << "handleCommand_ActiveObjectRemoveAdd: " << e.what()
+ << ". The packet is unreliable, ignoring" << std::endl;
+ }
+}
+
+void Client::handleCommand_ActiveObjectMessages(NetworkPacket* pkt)
+{
+ /*
+ for all objects
+ {
+ u16 id
+ u16 message length
+ string message
+ }
+ */
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ try {
+ while (is.good()) {
+ u16 id = readU16(is);
+ if (!is.good())
+ break;
+
+ std::string message = deSerializeString(is);
+
+ // Pass on to the environment
+ m_env.processActiveObjectMessage(id, message);
+ }
+ } catch (SerializationError &e) {
+ errorstream << "Client::handleCommand_ActiveObjectMessages: "
+ << "caught SerializationError: " << e.what() << std::endl;
+ }
+}
+
+void Client::handleCommand_Movement(NetworkPacket* pkt)
+{
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ float mad, maa, maf, msw, mscr, msf, mscl, msj, lf, lfs, ls, g;
+
+ *pkt >> mad >> maa >> maf >> msw >> mscr >> msf >> mscl >> msj
+ >> lf >> lfs >> ls >> g;
+
+ player->movement_acceleration_default = mad * BS;
+ player->movement_acceleration_air = maa * BS;
+ player->movement_acceleration_fast = maf * BS;
+ player->movement_speed_walk = msw * BS;
+ player->movement_speed_crouch = mscr * BS;
+ player->movement_speed_fast = msf * BS;
+ player->movement_speed_climb = mscl * BS;
+ player->movement_speed_jump = msj * BS;
+ player->movement_liquid_fluidity = lf * BS;
+ player->movement_liquid_fluidity_smooth = lfs * BS;
+ player->movement_liquid_sink = ls * BS;
+ player->movement_gravity = g * BS;
+}
+
+void Client::handleCommand_HP(NetworkPacket* pkt)
+{
+
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ u8 oldhp = player->hp;
+
+ u8 hp;
+ *pkt >> hp;
+
+ player->hp = hp;
+
+ if (hp < oldhp) {
+ // Add to ClientEvent queue
+ ClientEvent event;
+ event.type = CE_PLAYER_DAMAGE;
+ event.player_damage.amount = oldhp - hp;
+ m_client_event_queue.push(event);
+ }
+}
+
+void Client::handleCommand_Breath(NetworkPacket* pkt)
+{
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ u16 breath;
+
+ *pkt >> breath;
+
+ player->setBreath(breath);
+}
+
+void Client::handleCommand_MovePlayer(NetworkPacket* pkt)
+{
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ v3f pos;
+ f32 pitch, yaw;
+
+ *pkt >> pos >> pitch >> yaw;
+
+ player->setPosition(pos);
+
+ infostream << "Client got TOCLIENT_MOVE_PLAYER"
+ << " pos=(" << pos.X << "," << pos.Y << "," << pos.Z << ")"
+ << " pitch=" << pitch
+ << " yaw=" << yaw
+ << std::endl;
+
+ /*
+ Add to ClientEvent queue.
+ This has to be sent to the main program because otherwise
+ it would just force the pitch and yaw values to whatever
+ the camera points to.
+ */
+ ClientEvent event;
+ event.type = CE_PLAYER_FORCE_MOVE;
+ event.player_force_move.pitch = pitch;
+ event.player_force_move.yaw = yaw;
+ m_client_event_queue.push(event);
+
+ // Ignore damage for a few seconds, so that the player doesn't
+ // get damage from falling on ground
+ m_ignore_damage_timer = 3.0;
+}
+
+void Client::handleCommand_PlayerItem(NetworkPacket* pkt)
+{
+ infostream << "Client: WARNING: Ignoring TOCLIENT_PLAYERITEM" << std::endl;
+}
+
+void Client::handleCommand_DeathScreen(NetworkPacket* pkt)
+{
+ bool set_camera_point_target;
+ v3f camera_point_target;
+
+ *pkt >> set_camera_point_target;
+ *pkt >> camera_point_target;
+
+ ClientEvent event;
+ event.type = CE_DEATHSCREEN;
+ event.deathscreen.set_camera_point_target = set_camera_point_target;
+ event.deathscreen.camera_point_target_x = camera_point_target.X;
+ event.deathscreen.camera_point_target_y = camera_point_target.Y;
+ event.deathscreen.camera_point_target_z = camera_point_target.Z;
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_AnnounceMedia(NetworkPacket* pkt)
+{
+ u16 num_files;
+
+ *pkt >> num_files;
+
+ infostream << "Client: Received media announcement: packet size: "
+ << pkt->getSize() << std::endl;
+
+ if (m_media_downloader == NULL ||
+ m_media_downloader->isStarted()) {
+ const char *problem = m_media_downloader ?
+ "we already saw another announcement" :
+ "all media has been received already";
+ errorstream << "Client: Received media announcement but "
+ << problem << "! "
+ << " files=" << num_files
+ << " size=" << pkt->getSize() << std::endl;
+ return;
+ }
+
+ // Mesh update thread must be stopped while
+ // updating content definitions
+ sanity_check(!m_mesh_update_thread.IsRunning());
+
+ for (u16 i = 0; i < num_files; i++) {
+ std::string name, sha1_base64;
+
+ *pkt >> name >> sha1_base64;
+
+ std::string sha1_raw = base64_decode(sha1_base64);
+ m_media_downloader->addFile(name, sha1_raw);
+ }
+
+ std::vector<std::string> remote_media;
+ try {
+ std::string str;
+
+ *pkt >> str;
+
+ Strfnd sf(str);
+ while(!sf.atend()) {
+ std::string baseurl = trim(sf.next(","));
+ if (baseurl != "")
+ m_media_downloader->addRemoteServer(baseurl);
+ }
+ }
+ catch(SerializationError& e) {
+ // not supported by server or turned off
+ }
+
+ m_media_downloader->step(this);
+}
+
+void Client::handleCommand_Media(NetworkPacket* pkt)
+{
+ /*
+ u16 command
+ u16 total number of file bunches
+ u16 index of this bunch
+ u32 number of files in this bunch
+ for each file {
+ u16 length of name
+ string name
+ u32 length of data
+ data
+ }
+ */
+ u16 num_bunches;
+ u16 bunch_i;
+ u32 num_files;
+
+ *pkt >> num_bunches >> bunch_i >> num_files;
+
+ infostream << "Client: Received files: bunch " << bunch_i << "/"
+ << num_bunches << " files=" << num_files
+ << " size=" << pkt->getSize() << std::endl;
+
+ if (num_files == 0)
+ return;
+
+ if (m_media_downloader == NULL ||
+ !m_media_downloader->isStarted()) {
+ const char *problem = m_media_downloader ?
+ "media has not been requested" :
+ "all media has been received already";
+ errorstream << "Client: Received media but "
+ << problem << "! "
+ << " bunch " << bunch_i << "/" << num_bunches
+ << " files=" << num_files
+ << " size=" << pkt->getSize() << std::endl;
+ return;
+ }
+
+ // Mesh update thread must be stopped while
+ // updating content definitions
+ sanity_check(!m_mesh_update_thread.IsRunning());
+
+ for (u32 i=0; i < num_files; i++) {
+ std::string name;
+
+ *pkt >> name;
+
+ std::string data = pkt->readLongString();
+
+ m_media_downloader->conventionalTransferDone(
+ name, data, this);
+ }
+}
+
+void Client::handleCommand_ToolDef(NetworkPacket* pkt)
+{
+ infostream << "Client: WARNING: Ignoring TOCLIENT_TOOLDEF" << std::endl;
+}
+
+void Client::handleCommand_NodeDef(NetworkPacket* pkt)
+{
+ infostream << "Client: Received node definitions: packet size: "
+ << pkt->getSize() << std::endl;
+
+ // Mesh update thread must be stopped while
+ // updating content definitions
+ sanity_check(!m_mesh_update_thread.IsRunning());
+
+ // Decompress node definitions
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+ std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
+ std::ostringstream tmp_os;
+ decompressZlib(tmp_is, tmp_os);
+
+ // Deserialize node definitions
+ std::istringstream tmp_is2(tmp_os.str());
+ m_nodedef->deSerialize(tmp_is2);
+ m_nodedef_received = true;
+}
+
+void Client::handleCommand_CraftItemDef(NetworkPacket* pkt)
+{
+ infostream << "Client: WARNING: Ignoring TOCLIENT_CRAFTITEMDEF" << std::endl;
+}
+
+void Client::handleCommand_ItemDef(NetworkPacket* pkt)
+{
+ infostream << "Client: Received item definitions: packet size: "
+ << pkt->getSize() << std::endl;
+
+ // Mesh update thread must be stopped while
+ // updating content definitions
+ sanity_check(!m_mesh_update_thread.IsRunning());
+
+ // Decompress item definitions
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+ std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
+ std::ostringstream tmp_os;
+ decompressZlib(tmp_is, tmp_os);
+
+ // Deserialize node definitions
+ std::istringstream tmp_is2(tmp_os.str());
+ m_itemdef->deSerialize(tmp_is2);
+ m_itemdef_received = true;
+}
+
+void Client::handleCommand_PlaySound(NetworkPacket* pkt)
+{
+ s32 server_id;
+ std::string name;
+ float gain;
+ u8 type; // 0=local, 1=positional, 2=object
+ v3f pos;
+ u16 object_id;
+ bool loop;
+
+ *pkt >> server_id >> name >> gain >> type >> pos >> object_id >> loop;
+
+ // Start playing
+ int client_id = -1;
+ switch(type) {
+ case 0: // local
+ client_id = m_sound->playSound(name, loop, gain);
+ break;
+ case 1: // positional
+ client_id = m_sound->playSoundAt(name, loop, gain, pos);
+ break;
+ case 2:
+ { // object
+ ClientActiveObject *cao = m_env.getActiveObject(object_id);
+ if (cao)
+ pos = cao->getPosition();
+ client_id = m_sound->playSoundAt(name, loop, gain, pos);
+ // TODO: Set up sound to move with object
+ break;
+ }
+ default:
+ break;
+ }
+
+ if (client_id != -1) {
+ m_sounds_server_to_client[server_id] = client_id;
+ m_sounds_client_to_server[client_id] = server_id;
+ if (object_id != 0)
+ m_sounds_to_objects[client_id] = object_id;
+ }
+}
+
+void Client::handleCommand_StopSound(NetworkPacket* pkt)
+{
+ s32 server_id;
+
+ *pkt >> server_id;
+
+ std::map<s32, int>::iterator i =
+ m_sounds_server_to_client.find(server_id);
+
+ if (i != m_sounds_server_to_client.end()) {
+ int client_id = i->second;
+ m_sound->stopSound(client_id);
+ }
+}
+
+void Client::handleCommand_Privileges(NetworkPacket* pkt)
+{
+ m_privileges.clear();
+ infostream << "Client: Privileges updated: ";
+ u16 num_privileges;
+
+ *pkt >> num_privileges;
+
+ for (u16 i = 0; i < num_privileges; i++) {
+ std::string priv;
+
+ *pkt >> priv;
+
+ m_privileges.insert(priv);
+ infostream << priv << " ";
+ }
+ infostream << std::endl;
+}
+
+void Client::handleCommand_InventoryFormSpec(NetworkPacket* pkt)
+{
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ // Store formspec in LocalPlayer
+ player->inventory_formspec = pkt->readLongString();
+}
+
+void Client::handleCommand_DetachedInventory(NetworkPacket* pkt)
+{
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ std::string name = deSerializeString(is);
+
+ infostream << "Client: Detached inventory update: \"" << name
+ << "\"" << std::endl;
+
+ Inventory *inv = NULL;
+ if (m_detached_inventories.count(name) > 0)
+ inv = m_detached_inventories[name];
+ else {
+ inv = new Inventory(m_itemdef);
+ m_detached_inventories[name] = inv;
+ }
+ inv->deSerialize(is);
+}
+
+void Client::handleCommand_ShowFormSpec(NetworkPacket* pkt)
+{
+ std::string formspec = pkt->readLongString();
+ std::string formname;
+
+ *pkt >> formname;
+
+ ClientEvent event;
+ event.type = CE_SHOW_FORMSPEC;
+ // pointer is required as event is a struct only!
+ // adding a std:string to a struct isn't possible
+ event.show_formspec.formspec = new std::string(formspec);
+ event.show_formspec.formname = new std::string(formname);
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_SpawnParticle(NetworkPacket* pkt)
+{
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ v3f pos = readV3F1000(is);
+ v3f vel = readV3F1000(is);
+ v3f acc = readV3F1000(is);
+ float expirationtime = readF1000(is);
+ float size = readF1000(is);
+ bool collisiondetection = readU8(is);
+ std::string texture = deSerializeLongString(is);
+ bool vertical = false;
+ try {
+ vertical = readU8(is);
+ } catch (...) {}
+
+ ClientEvent event;
+ event.type = CE_SPAWN_PARTICLE;
+ event.spawn_particle.pos = new v3f (pos);
+ event.spawn_particle.vel = new v3f (vel);
+ event.spawn_particle.acc = new v3f (acc);
+ event.spawn_particle.expirationtime = expirationtime;
+ event.spawn_particle.size = size;
+ event.spawn_particle.collisiondetection = collisiondetection;
+ event.spawn_particle.vertical = vertical;
+ event.spawn_particle.texture = new std::string(texture);
+
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_AddParticleSpawner(NetworkPacket* pkt)
+{
+ u16 amount;
+ float spawntime;
+ v3f minpos;
+ v3f maxpos;
+ v3f minvel;
+ v3f maxvel;
+ v3f minacc;
+ v3f maxacc;
+ float minexptime;
+ float maxexptime;
+ float minsize;
+ float maxsize;
+ bool collisiondetection;
+ u32 id;
+
+ *pkt >> amount >> spawntime >> minpos >> maxpos >> minvel >> maxvel
+ >> minacc >> maxacc >> minexptime >> maxexptime >> minsize
+ >> maxsize >> collisiondetection;
+
+ std::string texture = pkt->readLongString();
+
+ *pkt >> id;
+
+ bool vertical = false;
+ try {
+ *pkt >> vertical;
+ } catch (...) {}
+
+ ClientEvent event;
+ event.type = CE_ADD_PARTICLESPAWNER;
+ event.add_particlespawner.amount = amount;
+ event.add_particlespawner.spawntime = spawntime;
+ event.add_particlespawner.minpos = new v3f (minpos);
+ event.add_particlespawner.maxpos = new v3f (maxpos);
+ event.add_particlespawner.minvel = new v3f (minvel);
+ event.add_particlespawner.maxvel = new v3f (maxvel);
+ event.add_particlespawner.minacc = new v3f (minacc);
+ event.add_particlespawner.maxacc = new v3f (maxacc);
+ event.add_particlespawner.minexptime = minexptime;
+ event.add_particlespawner.maxexptime = maxexptime;
+ event.add_particlespawner.minsize = minsize;
+ event.add_particlespawner.maxsize = maxsize;
+ event.add_particlespawner.collisiondetection = collisiondetection;
+ event.add_particlespawner.vertical = vertical;
+ event.add_particlespawner.texture = new std::string(texture);
+ event.add_particlespawner.id = id;
+
+ m_client_event_queue.push(event);
+}
+
+
+void Client::handleCommand_DeleteParticleSpawner(NetworkPacket* pkt)
+{
+ u16 legacy_id;
+ u32 id;
+
+ // Modification set 13/03/15, 1 year of compat for protocol v24
+ if (pkt->getCommand() == TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY) {
+ *pkt >> legacy_id;
+ }
+ else {
+ *pkt >> id;
+ }
+
+
+ ClientEvent event;
+ event.type = CE_DELETE_PARTICLESPAWNER;
+ event.delete_particlespawner.id =
+ (pkt->getCommand() == TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY ? (u32) legacy_id : id);
+
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_HudAdd(NetworkPacket* pkt)
+{
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ u32 id;
+ u8 type;
+ v2f pos;
+ std::string name;
+ v2f scale;
+ std::string text;
+ u32 number;
+ u32 item;
+ u32 dir;
+ v2f align;
+ v2f offset;
+ v3f world_pos;
+ v2s32 size;
+
+ *pkt >> id >> type >> pos >> name >> scale >> text >> number >> item
+ >> dir >> align >> offset;
+ try {
+ *pkt >> world_pos;
+ }
+ catch(SerializationError &e) {};
+
+ try {
+ *pkt >> size;
+ } catch(SerializationError &e) {};
+
+ ClientEvent event;
+ event.type = CE_HUDADD;
+ event.hudadd.id = id;
+ event.hudadd.type = type;
+ event.hudadd.pos = new v2f(pos);
+ event.hudadd.name = new std::string(name);
+ event.hudadd.scale = new v2f(scale);
+ event.hudadd.text = new std::string(text);
+ event.hudadd.number = number;
+ event.hudadd.item = item;
+ event.hudadd.dir = dir;
+ event.hudadd.align = new v2f(align);
+ event.hudadd.offset = new v2f(offset);
+ event.hudadd.world_pos = new v3f(world_pos);
+ event.hudadd.size = new v2s32(size);
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_HudRemove(NetworkPacket* pkt)
+{
+ u32 id;
+
+ *pkt >> id;
+
+ ClientEvent event;
+ event.type = CE_HUDRM;
+ event.hudrm.id = id;
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_HudChange(NetworkPacket* pkt)
+{
+ std::string sdata;
+ v2f v2fdata;
+ v3f v3fdata;
+ u32 intdata = 0;
+ v2s32 v2s32data;
+ u32 id;
+ u8 stat;
+
+ *pkt >> id >> stat;
+
+ if (stat == HUD_STAT_POS || stat == HUD_STAT_SCALE ||
+ stat == HUD_STAT_ALIGN || stat == HUD_STAT_OFFSET)
+ *pkt >> v2fdata;
+ else if (stat == HUD_STAT_NAME || stat == HUD_STAT_TEXT)
+ *pkt >> sdata;
+ else if (stat == HUD_STAT_WORLD_POS)
+ *pkt >> v3fdata;
+ else if (stat == HUD_STAT_SIZE )
+ *pkt >> v2s32data;
+ else
+ *pkt >> intdata;
+
+ ClientEvent event;
+ event.type = CE_HUDCHANGE;
+ event.hudchange.id = id;
+ event.hudchange.stat = (HudElementStat)stat;
+ event.hudchange.v2fdata = new v2f(v2fdata);
+ event.hudchange.v3fdata = new v3f(v3fdata);
+ event.hudchange.sdata = new std::string(sdata);
+ event.hudchange.data = intdata;
+ event.hudchange.v2s32data = new v2s32(v2s32data);
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_HudSetFlags(NetworkPacket* pkt)
+{
+ u32 flags, mask;
+
+ *pkt >> flags >> mask;
+
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ player->hud_flags &= ~mask;
+ player->hud_flags |= flags;
+}
+
+void Client::handleCommand_HudSetParam(NetworkPacket* pkt)
+{
+ u16 param; std::string value;
+
+ *pkt >> param >> value;
+
+ Player *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ if (param == HUD_PARAM_HOTBAR_ITEMCOUNT && value.size() == 4) {
+ s32 hotbar_itemcount = readS32((u8*) value.c_str());
+ if (hotbar_itemcount > 0 && hotbar_itemcount <= HUD_HOTBAR_ITEMCOUNT_MAX)
+ player->hud_hotbar_itemcount = hotbar_itemcount;
+ }
+ else if (param == HUD_PARAM_HOTBAR_IMAGE) {
+ ((LocalPlayer *) player)->hotbar_image = value;
+ }
+ else if (param == HUD_PARAM_HOTBAR_SELECTED_IMAGE) {
+ ((LocalPlayer *) player)->hotbar_selected_image = value;
+ }
+}
+
+void Client::handleCommand_HudSetSky(NetworkPacket* pkt)
+{
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ video::SColor *bgcolor = new video::SColor(readARGB8(is));
+ std::string *type = new std::string(deSerializeString(is));
+ u16 count = readU16(is);
+ std::vector<std::string> *params = new std::vector<std::string>;
+
+ for (size_t i = 0; i < count; i++)
+ params->push_back(deSerializeString(is));
+
+ ClientEvent event;
+ event.type = CE_SET_SKY;
+ event.set_sky.bgcolor = bgcolor;
+ event.set_sky.type = type;
+ event.set_sky.params = params;
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_OverrideDayNightRatio(NetworkPacket* pkt)
+{
+ bool do_override;
+ u16 day_night_ratio_u;
+
+ *pkt >> do_override >> day_night_ratio_u;
+
+ float day_night_ratio_f = (float)day_night_ratio_u / 65536;
+
+ ClientEvent event;
+ event.type = CE_OVERRIDE_DAY_NIGHT_RATIO;
+ event.override_day_night_ratio.do_override = do_override;
+ event.override_day_night_ratio.ratio_f = day_night_ratio_f;
+ m_client_event_queue.push(event);
+}
+
+void Client::handleCommand_LocalPlayerAnimations(NetworkPacket* pkt)
+{
+ LocalPlayer *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ *pkt >> player->local_animations[0];
+ *pkt >> player->local_animations[1];
+ *pkt >> player->local_animations[2];
+ *pkt >> player->local_animations[3];
+ *pkt >> player->local_animation_speed;
+}
+
+void Client::handleCommand_EyeOffset(NetworkPacket* pkt)
+{
+ LocalPlayer *player = m_env.getLocalPlayer();
+ assert(player != NULL);
+
+ *pkt >> player->eye_offset_first >> player->eye_offset_third;
+}
+
+void Client::handleCommand_SrpBytesSandB(NetworkPacket* pkt)
+{
+ if ((m_chosen_auth_mech != AUTH_MECHANISM_LEGACY_PASSWORD)
+ && (m_chosen_auth_mech != AUTH_MECHANISM_SRP)) {
+ errorstream << "Client: Recieved SRP S_B login message,"
+ << " but wasn't supposed to (chosen_mech="
+ << m_chosen_auth_mech << ")." << std::endl;
+ return;
+ }
+
+ char *bytes_M = 0;
+ size_t len_M = 0;
+ SRPUser *usr = (SRPUser *) m_auth_data;
+ std::string s;
+ std::string B;
+ *pkt >> s >> B;
+
+ infostream << "Client: Recieved TOCLIENT_SRP_BYTES_S_B." << std::endl;
+
+ srp_user_process_challenge(usr, (const unsigned char *) s.c_str(), s.size(),
+ (const unsigned char *) B.c_str(), B.size(),
+ (unsigned char **) &bytes_M, &len_M);
+
+ if ( !bytes_M ) {
+ errorstream << "Client: SRP-6a S_B safety check violation!" << std::endl;
+ return;
+ }
+
+ NetworkPacket resp_pkt(TOSERVER_SRP_BYTES_M, 0);
+ resp_pkt << std::string(bytes_M, len_M);
+ Send(&resp_pkt);
+}
diff --git a/src/network/connection.cpp b/src/network/connection.cpp
new file mode 100644
index 000000000..7794ce10f
--- /dev/null
+++ b/src/network/connection.cpp
@@ -0,0 +1,3102 @@
+/*
+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 <iomanip>
+#include <errno.h>
+#include "connection.h"
+#include "serialization.h"
+#include "log.h"
+#include "porting.h"
+#include "network/networkpacket.h"
+#include "util/serialize.h"
+#include "util/numeric.h"
+#include "util/string.h"
+#include "settings.h"
+#include "profiler.h"
+
+namespace con
+{
+
+/******************************************************************************/
+/* defines used for debugging and profiling */
+/******************************************************************************/
+#ifdef NDEBUG
+#define LOG(a) a
+#define PROFILE(a)
+#undef DEBUG_CONNECTION_KBPS
+#else
+/* this mutex is used to achieve log message consistency */
+JMutex log_message_mutex;
+#define LOG(a) \
+ { \
+ JMutexAutoLock loglock(log_message_mutex); \
+ a; \
+ }
+#define PROFILE(a) a
+//#define DEBUG_CONNECTION_KBPS
+#undef DEBUG_CONNECTION_KBPS
+#endif
+
+
+static inline float CALC_DTIME(unsigned int lasttime, unsigned int curtime) {
+ float value = ( curtime - lasttime) / 1000.0;
+ return MYMAX(MYMIN(value,0.1),0.0);
+}
+
+/* maximum window size to use, 0xFFFF is theoretical maximum don't think about
+ * touching it, the less you're away from it the more likely data corruption
+ * will occur
+ */
+#define MAX_RELIABLE_WINDOW_SIZE 0x8000
+ /* starting value for window size */
+#define MIN_RELIABLE_WINDOW_SIZE 0x40
+
+#define MAX_UDP_PEERS 65535
+
+#define PING_TIMEOUT 5.0
+
+static u16 readPeerId(u8 *packetdata)
+{
+ return readU16(&packetdata[4]);
+}
+static u8 readChannel(u8 *packetdata)
+{
+ return readU8(&packetdata[6]);
+}
+
+BufferedPacket makePacket(Address &address, u8 *data, u32 datasize,
+ u32 protocol_id, u16 sender_peer_id, u8 channel)
+{
+ u32 packet_size = datasize + BASE_HEADER_SIZE;
+ BufferedPacket p(packet_size);
+ p.address = address;
+
+ writeU32(&p.data[0], protocol_id);
+ writeU16(&p.data[4], sender_peer_id);
+ writeU8(&p.data[6], channel);
+
+ memcpy(&p.data[BASE_HEADER_SIZE], data, datasize);
+
+ return p;
+}
+
+BufferedPacket makePacket(Address &address, SharedBuffer<u8> &data,
+ u32 protocol_id, u16 sender_peer_id, u8 channel)
+{
+ return makePacket(address, *data, data.getSize(),
+ protocol_id, sender_peer_id, channel);
+}
+
+SharedBuffer<u8> makeOriginalPacket(
+ SharedBuffer<u8> data)
+{
+ u32 header_size = 1;
+ u32 packet_size = data.getSize() + header_size;
+ SharedBuffer<u8> b(packet_size);
+
+ writeU8(&(b[0]), TYPE_ORIGINAL);
+ if (data.getSize() > 0) {
+ memcpy(&(b[header_size]), *data, data.getSize());
+ }
+ return b;
+}
+
+std::list<SharedBuffer<u8> > makeSplitPacket(
+ SharedBuffer<u8> data,
+ u32 chunksize_max,
+ u16 seqnum)
+{
+ // Chunk packets, containing the TYPE_SPLIT header
+ std::list<SharedBuffer<u8> > chunks;
+
+ u32 chunk_header_size = 7;
+ u32 maximum_data_size = chunksize_max - chunk_header_size;
+ u32 start = 0;
+ u32 end = 0;
+ u32 chunk_num = 0;
+ u16 chunk_count = 0;
+ do{
+ end = start + maximum_data_size - 1;
+ if (end > data.getSize() - 1)
+ end = data.getSize() - 1;
+
+ u32 payload_size = end - start + 1;
+ u32 packet_size = chunk_header_size + payload_size;
+
+ SharedBuffer<u8> chunk(packet_size);
+
+ writeU8(&chunk[0], TYPE_SPLIT);
+ writeU16(&chunk[1], seqnum);
+ // [3] u16 chunk_count is written at next stage
+ writeU16(&chunk[5], chunk_num);
+ memcpy(&chunk[chunk_header_size], &data[start], payload_size);
+
+ chunks.push_back(chunk);
+ chunk_count++;
+
+ start = end + 1;
+ chunk_num++;
+ }
+ while(end != data.getSize() - 1);
+
+ for(std::list<SharedBuffer<u8> >::iterator i = chunks.begin();
+ i != chunks.end(); ++i)
+ {
+ // Write chunk_count
+ writeU16(&((*i)[3]), chunk_count);
+ }
+
+ return chunks;
+}
+
+std::list<SharedBuffer<u8> > makeAutoSplitPacket(
+ SharedBuffer<u8> data,
+ u32 chunksize_max,
+ u16 &split_seqnum)
+{
+ u32 original_header_size = 1;
+ std::list<SharedBuffer<u8> > list;
+ if (data.getSize() + original_header_size > chunksize_max)
+ {
+ list = makeSplitPacket(data, chunksize_max, split_seqnum);
+ split_seqnum++;
+ return list;
+ }
+ else
+ {
+ list.push_back(makeOriginalPacket(data));
+ }
+ return list;
+}
+
+SharedBuffer<u8> makeReliablePacket(
+ SharedBuffer<u8> data,
+ u16 seqnum)
+{
+ u32 header_size = 3;
+ u32 packet_size = data.getSize() + header_size;
+ SharedBuffer<u8> b(packet_size);
+
+ writeU8(&b[0], TYPE_RELIABLE);
+ writeU16(&b[1], seqnum);
+
+ memcpy(&b[header_size], *data, data.getSize());
+
+ return b;
+}
+
+/*
+ ReliablePacketBuffer
+*/
+
+ReliablePacketBuffer::ReliablePacketBuffer(): m_list_size(0) {}
+
+void ReliablePacketBuffer::print()
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ LOG(dout_con<<"Dump of ReliablePacketBuffer:" << std::endl);
+ unsigned int index = 0;
+ for(std::list<BufferedPacket>::iterator i = m_list.begin();
+ i != m_list.end();
+ ++i)
+ {
+ u16 s = readU16(&(i->data[BASE_HEADER_SIZE+1]));
+ LOG(dout_con<<index<< ":" << s << std::endl);
+ index++;
+ }
+}
+bool ReliablePacketBuffer::empty()
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ return m_list.empty();
+}
+
+u32 ReliablePacketBuffer::size()
+{
+ return m_list_size;
+}
+
+bool ReliablePacketBuffer::containsPacket(u16 seqnum)
+{
+ return !(findPacket(seqnum) == m_list.end());
+}
+
+RPBSearchResult ReliablePacketBuffer::findPacket(u16 seqnum)
+{
+ std::list<BufferedPacket>::iterator i = m_list.begin();
+ for(; i != m_list.end(); ++i)
+ {
+ u16 s = readU16(&(i->data[BASE_HEADER_SIZE+1]));
+ /*dout_con<<"findPacket(): finding seqnum="<<seqnum
+ <<", comparing to s="<<s<<std::endl;*/
+ if (s == seqnum)
+ break;
+ }
+ return i;
+}
+RPBSearchResult ReliablePacketBuffer::notFound()
+{
+ return m_list.end();
+}
+bool ReliablePacketBuffer::getFirstSeqnum(u16& result)
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ if (m_list.empty())
+ return false;
+ BufferedPacket p = *m_list.begin();
+ result = readU16(&p.data[BASE_HEADER_SIZE+1]);
+ return true;
+}
+
+BufferedPacket ReliablePacketBuffer::popFirst()
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ if (m_list.empty())
+ throw NotFoundException("Buffer is empty");
+ BufferedPacket p = *m_list.begin();
+ m_list.erase(m_list.begin());
+ --m_list_size;
+
+ if (m_list_size == 0) {
+ m_oldest_non_answered_ack = 0;
+ } else {
+ m_oldest_non_answered_ack =
+ readU16(&(*m_list.begin()).data[BASE_HEADER_SIZE+1]);
+ }
+ return p;
+}
+BufferedPacket ReliablePacketBuffer::popSeqnum(u16 seqnum)
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ RPBSearchResult r = findPacket(seqnum);
+ if (r == notFound()) {
+ LOG(dout_con<<"Sequence number: " << seqnum
+ << " not found in reliable buffer"<<std::endl);
+ throw NotFoundException("seqnum not found in buffer");
+ }
+ BufferedPacket p = *r;
+
+
+ RPBSearchResult next = r;
+ next++;
+ if (next != notFound()) {
+ u16 s = readU16(&(next->data[BASE_HEADER_SIZE+1]));
+ m_oldest_non_answered_ack = s;
+ }
+
+ m_list.erase(r);
+ --m_list_size;
+
+ if (m_list_size == 0)
+ { m_oldest_non_answered_ack = 0; }
+ else
+ { m_oldest_non_answered_ack = readU16(&(*m_list.begin()).data[BASE_HEADER_SIZE+1]); }
+ return p;
+}
+void ReliablePacketBuffer::insert(BufferedPacket &p,u16 next_expected)
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ if (p.data.getSize() < BASE_HEADER_SIZE + 3) {
+ errorstream << "ReliablePacketBuffer::insert(): Invalid data size for "
+ "reliable packet" << std::endl;
+ return;
+ }
+ u8 type = readU8(&p.data[BASE_HEADER_SIZE + 0]);
+ if (type != TYPE_RELIABLE) {
+ errorstream << "ReliablePacketBuffer::insert(): type is not reliable"
+ << std::endl;
+ return;
+ }
+ u16 seqnum = readU16(&p.data[BASE_HEADER_SIZE + 1]);
+
+ if (!seqnum_in_window(seqnum, next_expected, MAX_RELIABLE_WINDOW_SIZE)) {
+ errorstream << "ReliablePacketBuffer::insert(): seqnum is outside of "
+ "expected window " << std::endl;
+ return;
+ }
+ if (seqnum == next_expected) {
+ errorstream << "ReliablePacketBuffer::insert(): seqnum is next expected"
+ << std::endl;
+ return;
+ }
+
+ ++m_list_size;
+ sanity_check(m_list_size <= SEQNUM_MAX+1); // FIXME: Handle the error?
+
+ // Find the right place for the packet and insert it there
+ // If list is empty, just add it
+ if (m_list.empty())
+ {
+ m_list.push_back(p);
+ m_oldest_non_answered_ack = seqnum;
+ // Done.
+ return;
+ }
+
+ // Otherwise find the right place
+ std::list<BufferedPacket>::iterator i = m_list.begin();
+ // Find the first packet in the list which has a higher seqnum
+ u16 s = readU16(&(i->data[BASE_HEADER_SIZE+1]));
+
+ /* case seqnum is smaller then next_expected seqnum */
+ /* this is true e.g. on wrap around */
+ if (seqnum < next_expected) {
+ while(((s < seqnum) || (s >= next_expected)) && (i != m_list.end())) {
+ i++;
+ if (i != m_list.end())
+ s = readU16(&(i->data[BASE_HEADER_SIZE+1]));
+ }
+ }
+ /* non wrap around case (at least for incoming and next_expected */
+ else
+ {
+ while(((s < seqnum) && (s >= next_expected)) && (i != m_list.end())) {
+ i++;
+ if (i != m_list.end())
+ s = readU16(&(i->data[BASE_HEADER_SIZE+1]));
+ }
+ }
+
+ if (s == seqnum) {
+ if (
+ (readU16(&(i->data[BASE_HEADER_SIZE+1])) != seqnum) ||
+ (i->data.getSize() != p.data.getSize()) ||
+ (i->address != p.address)
+ )
+ {
+ /* if this happens your maximum transfer window may be to big */
+ fprintf(stderr,
+ "Duplicated seqnum %d non matching packet detected:\n",
+ seqnum);
+ fprintf(stderr, "Old: seqnum: %05d size: %04d, address: %s\n",
+ readU16(&(i->data[BASE_HEADER_SIZE+1])),i->data.getSize(),
+ i->address.serializeString().c_str());
+ fprintf(stderr, "New: seqnum: %05d size: %04u, address: %s\n",
+ readU16(&(p.data[BASE_HEADER_SIZE+1])),p.data.getSize(),
+ p.address.serializeString().c_str());
+ throw IncomingDataCorruption("duplicated packet isn't same as original one");
+ }
+
+ /* nothing to do this seems to be a resent packet */
+ /* for paranoia reason data should be compared */
+ --m_list_size;
+ }
+ /* insert or push back */
+ else if (i != m_list.end()) {
+ m_list.insert(i, p);
+ }
+ else {
+ m_list.push_back(p);
+ }
+
+ /* update last packet number */
+ m_oldest_non_answered_ack = readU16(&(*m_list.begin()).data[BASE_HEADER_SIZE+1]);
+}
+
+void ReliablePacketBuffer::incrementTimeouts(float dtime)
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ for(std::list<BufferedPacket>::iterator i = m_list.begin();
+ i != m_list.end(); ++i)
+ {
+ i->time += dtime;
+ i->totaltime += dtime;
+ }
+}
+
+std::list<BufferedPacket> ReliablePacketBuffer::getTimedOuts(float timeout,
+ unsigned int max_packets)
+{
+ JMutexAutoLock listlock(m_list_mutex);
+ std::list<BufferedPacket> timed_outs;
+ for(std::list<BufferedPacket>::iterator i = m_list.begin();
+ i != m_list.end(); ++i)
+ {
+ if (i->time >= timeout) {
+ timed_outs.push_back(*i);
+
+ //this packet will be sent right afterwards reset timeout here
+ i->time = 0.0;
+ if (timed_outs.size() >= max_packets)
+ break;
+ }
+ }
+ return timed_outs;
+}
+
+/*
+ IncomingSplitBuffer
+*/
+
+IncomingSplitBuffer::~IncomingSplitBuffer()
+{
+ JMutexAutoLock listlock(m_map_mutex);
+ for(std::map<u16, IncomingSplitPacket*>::iterator i = m_buf.begin();
+ i != m_buf.end(); ++i)
+ {
+ delete i->second;
+ }
+}
+/*
+ This will throw a GotSplitPacketException when a full
+ split packet is constructed.
+*/
+SharedBuffer<u8> IncomingSplitBuffer::insert(BufferedPacket &p, bool reliable)
+{
+ JMutexAutoLock listlock(m_map_mutex);
+ u32 headersize = BASE_HEADER_SIZE + 7;
+ if (p.data.getSize() < headersize) {
+ errorstream << "Invalid data size for split packet" << std::endl;
+ return SharedBuffer<u8>();
+ }
+ u8 type = readU8(&p.data[BASE_HEADER_SIZE+0]);
+ u16 seqnum = readU16(&p.data[BASE_HEADER_SIZE+1]);
+ u16 chunk_count = readU16(&p.data[BASE_HEADER_SIZE+3]);
+ u16 chunk_num = readU16(&p.data[BASE_HEADER_SIZE+5]);
+
+ if (type != TYPE_SPLIT) {
+ errorstream << "IncomingSplitBuffer::insert(): type is not split"
+ << std::endl;
+ return SharedBuffer<u8>();
+ }
+
+ // Add if doesn't exist
+ if (m_buf.find(seqnum) == m_buf.end())
+ {
+ IncomingSplitPacket *sp = new IncomingSplitPacket();
+ sp->chunk_count = chunk_count;
+ sp->reliable = reliable;
+ m_buf[seqnum] = sp;
+ }
+
+ IncomingSplitPacket *sp = m_buf[seqnum];
+
+ // TODO: These errors should be thrown or something? Dunno.
+ if (chunk_count != sp->chunk_count)
+ LOG(derr_con<<"Connection: WARNING: chunk_count="<<chunk_count
+ <<" != sp->chunk_count="<<sp->chunk_count
+ <<std::endl);
+ if (reliable != sp->reliable)
+ LOG(derr_con<<"Connection: WARNING: reliable="<<reliable
+ <<" != sp->reliable="<<sp->reliable
+ <<std::endl);
+
+ // If chunk already exists, ignore it.
+ // Sometimes two identical packets may arrive when there is network
+ // lag and the server re-sends stuff.
+ if (sp->chunks.find(chunk_num) != sp->chunks.end())
+ return SharedBuffer<u8>();
+
+ // Cut chunk data out of packet
+ u32 chunkdatasize = p.data.getSize() - headersize;
+ SharedBuffer<u8> chunkdata(chunkdatasize);
+ memcpy(*chunkdata, &(p.data[headersize]), chunkdatasize);
+
+ // Set chunk data in buffer
+ sp->chunks[chunk_num] = chunkdata;
+
+ // If not all chunks are received, return empty buffer
+ if (sp->allReceived() == false)
+ return SharedBuffer<u8>();
+
+ // Calculate total size
+ u32 totalsize = 0;
+ for(std::map<u16, SharedBuffer<u8> >::iterator i = sp->chunks.begin();
+ i != sp->chunks.end(); ++i)
+ {
+ totalsize += i->second.getSize();
+ }
+
+ SharedBuffer<u8> fulldata(totalsize);
+
+ // Copy chunks to data buffer
+ u32 start = 0;
+ for(u32 chunk_i=0; chunk_i<sp->chunk_count;
+ chunk_i++)
+ {
+ SharedBuffer<u8> buf = sp->chunks[chunk_i];
+ u16 chunkdatasize = buf.getSize();
+ memcpy(&fulldata[start], *buf, chunkdatasize);
+ start += chunkdatasize;;
+ }
+
+ // Remove sp from buffer
+ m_buf.erase(seqnum);
+ delete sp;
+
+ return fulldata;
+}
+void IncomingSplitBuffer::removeUnreliableTimedOuts(float dtime, float timeout)
+{
+ std::list<u16> remove_queue;
+ {
+ JMutexAutoLock listlock(m_map_mutex);
+ for(std::map<u16, IncomingSplitPacket*>::iterator i = m_buf.begin();
+ i != m_buf.end(); ++i)
+ {
+ IncomingSplitPacket *p = i->second;
+ // Reliable ones are not removed by timeout
+ if (p->reliable == true)
+ continue;
+ p->time += dtime;
+ if (p->time >= timeout)
+ remove_queue.push_back(i->first);
+ }
+ }
+ for(std::list<u16>::iterator j = remove_queue.begin();
+ j != remove_queue.end(); ++j)
+ {
+ JMutexAutoLock listlock(m_map_mutex);
+ LOG(dout_con<<"NOTE: Removing timed out unreliable split packet"<<std::endl);
+ delete m_buf[*j];
+ m_buf.erase(*j);
+ }
+}
+
+/*
+ Channel
+*/
+
+Channel::Channel() :
+ window_size(MIN_RELIABLE_WINDOW_SIZE),
+ next_incoming_seqnum(SEQNUM_INITIAL),
+ next_outgoing_seqnum(SEQNUM_INITIAL),
+ next_outgoing_split_seqnum(SEQNUM_INITIAL),
+ current_packet_loss(0),
+ current_packet_too_late(0),
+ current_packet_successfull(0),
+ packet_loss_counter(0),
+ current_bytes_transfered(0),
+ current_bytes_received(0),
+ current_bytes_lost(0),
+ max_kbps(0.0),
+ cur_kbps(0.0),
+ avg_kbps(0.0),
+ max_incoming_kbps(0.0),
+ cur_incoming_kbps(0.0),
+ avg_incoming_kbps(0.0),
+ max_kbps_lost(0.0),
+ cur_kbps_lost(0.0),
+ avg_kbps_lost(0.0),
+ bpm_counter(0.0),
+ rate_samples(0)
+{
+}
+
+Channel::~Channel()
+{
+}
+
+u16 Channel::readNextIncomingSeqNum()
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ return next_incoming_seqnum;
+}
+
+u16 Channel::incNextIncomingSeqNum()
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ u16 retval = next_incoming_seqnum;
+ next_incoming_seqnum++;
+ return retval;
+}
+
+u16 Channel::readNextSplitSeqNum()
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ return next_outgoing_split_seqnum;
+}
+void Channel::setNextSplitSeqNum(u16 seqnum)
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ next_outgoing_split_seqnum = seqnum;
+}
+
+u16 Channel::getOutgoingSequenceNumber(bool& successful)
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ u16 retval = next_outgoing_seqnum;
+ u16 lowest_unacked_seqnumber;
+
+ /* shortcut if there ain't any packet in outgoing list */
+ if (outgoing_reliables_sent.empty())
+ {
+ next_outgoing_seqnum++;
+ return retval;
+ }
+
+ if (outgoing_reliables_sent.getFirstSeqnum(lowest_unacked_seqnumber))
+ {
+ if (lowest_unacked_seqnumber < next_outgoing_seqnum) {
+ // ugly cast but this one is required in order to tell compiler we
+ // know about difference of two unsigned may be negative in general
+ // but we already made sure it won't happen in this case
+ if (((u16)(next_outgoing_seqnum - lowest_unacked_seqnumber)) > window_size) {
+ successful = false;
+ return 0;
+ }
+ }
+ else {
+ // ugly cast but this one is required in order to tell compiler we
+ // know about difference of two unsigned may be negative in general
+ // but we already made sure it won't happen in this case
+ if ((next_outgoing_seqnum + (u16)(SEQNUM_MAX - lowest_unacked_seqnumber)) >
+ window_size) {
+ successful = false;
+ return 0;
+ }
+ }
+ }
+
+ next_outgoing_seqnum++;
+ return retval;
+}
+
+u16 Channel::readOutgoingSequenceNumber()
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ return next_outgoing_seqnum;
+}
+
+bool Channel::putBackSequenceNumber(u16 seqnum)
+{
+ if (((seqnum + 1) % (SEQNUM_MAX+1)) == next_outgoing_seqnum) {
+
+ next_outgoing_seqnum = seqnum;
+ return true;
+ }
+ return false;
+}
+
+void Channel::UpdateBytesSent(unsigned int bytes, unsigned int packets)
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ current_bytes_transfered += bytes;
+ current_packet_successfull += packets;
+}
+
+void Channel::UpdateBytesReceived(unsigned int bytes) {
+ JMutexAutoLock internal(m_internal_mutex);
+ current_bytes_received += bytes;
+}
+
+void Channel::UpdateBytesLost(unsigned int bytes)
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ current_bytes_lost += bytes;
+}
+
+
+void Channel::UpdatePacketLossCounter(unsigned int count)
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ current_packet_loss += count;
+}
+
+void Channel::UpdatePacketTooLateCounter()
+{
+ JMutexAutoLock internal(m_internal_mutex);
+ current_packet_too_late++;
+}
+
+void Channel::UpdateTimers(float dtime,bool legacy_peer)
+{
+ bpm_counter += dtime;
+ packet_loss_counter += dtime;
+
+ if (packet_loss_counter > 1.0)
+ {
+ packet_loss_counter -= 1.0;
+
+ unsigned int packet_loss = 11; /* use a neutral value for initialization */
+ unsigned int packets_successfull = 0;
+ //unsigned int packet_too_late = 0;
+
+ bool reasonable_amount_of_data_transmitted = false;
+
+ {
+ JMutexAutoLock internal(m_internal_mutex);
+ packet_loss = current_packet_loss;
+ //packet_too_late = current_packet_too_late;
+ packets_successfull = current_packet_successfull;
+
+ if (current_bytes_transfered > (unsigned int) (window_size*512/2))
+ {
+ reasonable_amount_of_data_transmitted = true;
+ }
+ current_packet_loss = 0;
+ current_packet_too_late = 0;
+ current_packet_successfull = 0;
+ }
+
+ /* dynamic window size is only available for non legacy peers */
+ if (!legacy_peer) {
+ float successfull_to_lost_ratio = 0.0;
+ bool done = false;
+
+ if (packets_successfull > 0) {
+ successfull_to_lost_ratio = packet_loss/packets_successfull;
+ }
+ else if (packet_loss > 0)
+ {
+ window_size = MYMAX(
+ (window_size - 10),
+ MIN_RELIABLE_WINDOW_SIZE);
+ done = true;
+ }
+
+ if (!done)
+ {
+ if ((successfull_to_lost_ratio < 0.01) &&
+ (window_size < MAX_RELIABLE_WINDOW_SIZE))
+ {
+ /* don't even think about increasing if we didn't even
+ * use major parts of our window */
+ if (reasonable_amount_of_data_transmitted)
+ window_size = MYMIN(
+ (window_size + 100),
+ MAX_RELIABLE_WINDOW_SIZE);
+ }
+ else if ((successfull_to_lost_ratio < 0.05) &&
+ (window_size < MAX_RELIABLE_WINDOW_SIZE))
+ {
+ /* don't even think about increasing if we didn't even
+ * use major parts of our window */
+ if (reasonable_amount_of_data_transmitted)
+ window_size = MYMIN(
+ (window_size + 50),
+ MAX_RELIABLE_WINDOW_SIZE);
+ }
+ else if (successfull_to_lost_ratio > 0.15)
+ {
+ window_size = MYMAX(
+ (window_size - 100),
+ MIN_RELIABLE_WINDOW_SIZE);
+ }
+ else if (successfull_to_lost_ratio > 0.1)
+ {
+ window_size = MYMAX(
+ (window_size - 50),
+ MIN_RELIABLE_WINDOW_SIZE);
+ }
+ }
+ }
+ }
+
+ if (bpm_counter > 10.0)
+ {
+ {
+ JMutexAutoLock internal(m_internal_mutex);
+ cur_kbps =
+ (((float) current_bytes_transfered)/bpm_counter)/1024.0;
+ current_bytes_transfered = 0;
+ cur_kbps_lost =
+ (((float) current_bytes_lost)/bpm_counter)/1024.0;
+ current_bytes_lost = 0;
+ cur_incoming_kbps =
+ (((float) current_bytes_received)/bpm_counter)/1024.0;
+ current_bytes_received = 0;
+ bpm_counter = 0;
+ }
+
+ if (cur_kbps > max_kbps)
+ {
+ max_kbps = cur_kbps;
+ }
+
+ if (cur_kbps_lost > max_kbps_lost)
+ {
+ max_kbps_lost = cur_kbps_lost;
+ }
+
+ if (cur_incoming_kbps > max_incoming_kbps) {
+ max_incoming_kbps = cur_incoming_kbps;
+ }
+
+ rate_samples = MYMIN(rate_samples+1,10);
+ float old_fraction = ((float) (rate_samples-1) )/( (float) rate_samples);
+ avg_kbps = avg_kbps * old_fraction +
+ cur_kbps * (1.0 - old_fraction);
+ avg_kbps_lost = avg_kbps_lost * old_fraction +
+ cur_kbps_lost * (1.0 - old_fraction);
+ avg_incoming_kbps = avg_incoming_kbps * old_fraction +
+ cur_incoming_kbps * (1.0 - old_fraction);
+ }
+}
+
+
+/*
+ Peer
+*/
+
+PeerHelper::PeerHelper() :
+ m_peer(0)
+{}
+
+PeerHelper::PeerHelper(Peer* peer) :
+ m_peer(peer)
+{
+ if (peer != NULL)
+ {
+ if (!peer->IncUseCount())
+ {
+ m_peer = 0;
+ }
+ }
+}
+
+PeerHelper::~PeerHelper()
+{
+ if (m_peer != 0)
+ m_peer->DecUseCount();
+
+ m_peer = 0;
+}
+
+PeerHelper& PeerHelper::operator=(Peer* peer)
+{
+ m_peer = peer;
+ if (peer != NULL)
+ {
+ if (!peer->IncUseCount())
+ {
+ m_peer = 0;
+ }
+ }
+ return *this;
+}
+
+Peer* PeerHelper::operator->() const
+{
+ return m_peer;
+}
+
+Peer* PeerHelper::operator&() const
+{
+ return m_peer;
+}
+
+bool PeerHelper::operator!() {
+ return ! m_peer;
+}
+
+bool PeerHelper::operator!=(void* ptr)
+{
+ return ((void*) m_peer != ptr);
+}
+
+bool Peer::IncUseCount()
+{
+ JMutexAutoLock lock(m_exclusive_access_mutex);
+
+ if (!m_pending_deletion)
+ {
+ this->m_usage++;
+ return true;
+ }
+
+ return false;
+}
+
+void Peer::DecUseCount()
+{
+ {
+ JMutexAutoLock lock(m_exclusive_access_mutex);
+ sanity_check(m_usage > 0);
+ m_usage--;
+
+ if (!((m_pending_deletion) && (m_usage == 0)))
+ return;
+ }
+ delete this;
+}
+
+void Peer::RTTStatistics(float rtt, std::string profiler_id,
+ unsigned int num_samples) {
+
+ if (m_last_rtt > 0) {
+ /* set min max values */
+ if (rtt < m_rtt.min_rtt)
+ m_rtt.min_rtt = rtt;
+ if (rtt >= m_rtt.max_rtt)
+ m_rtt.max_rtt = rtt;
+
+ /* do average calculation */
+ if (m_rtt.avg_rtt < 0.0)
+ m_rtt.avg_rtt = rtt;
+ else
+ m_rtt.avg_rtt = m_rtt.avg_rtt * (num_samples/(num_samples-1)) +
+ rtt * (1/num_samples);
+
+ /* do jitter calculation */
+
+ //just use some neutral value at beginning
+ float jitter = m_rtt.jitter_min;
+
+ if (rtt > m_last_rtt)
+ jitter = rtt-m_last_rtt;
+
+ if (rtt <= m_last_rtt)
+ jitter = m_last_rtt - rtt;
+
+ if (jitter < m_rtt.jitter_min)
+ m_rtt.jitter_min = jitter;
+ if (jitter >= m_rtt.jitter_max)
+ m_rtt.jitter_max = jitter;
+
+ if (m_rtt.jitter_avg < 0.0)
+ m_rtt.jitter_avg = jitter;
+ else
+ m_rtt.jitter_avg = m_rtt.jitter_avg * (num_samples/(num_samples-1)) +
+ jitter * (1/num_samples);
+
+ if (profiler_id != "")
+ {
+ g_profiler->graphAdd(profiler_id + "_rtt", rtt);
+ g_profiler->graphAdd(profiler_id + "_jitter", jitter);
+ }
+ }
+ /* save values required for next loop */
+ m_last_rtt = rtt;
+}
+
+bool Peer::isTimedOut(float timeout)
+{
+ JMutexAutoLock lock(m_exclusive_access_mutex);
+ u32 current_time = porting::getTimeMs();
+
+ float dtime = CALC_DTIME(m_last_timeout_check,current_time);
+ m_last_timeout_check = current_time;
+
+ m_timeout_counter += dtime;
+
+ return m_timeout_counter > timeout;
+}
+
+void Peer::Drop()
+{
+ {
+ JMutexAutoLock usage_lock(m_exclusive_access_mutex);
+ m_pending_deletion = true;
+ if (m_usage != 0)
+ return;
+ }
+
+ PROFILE(std::stringstream peerIdentifier1);
+ PROFILE(peerIdentifier1 << "runTimeouts[" << m_connection->getDesc()
+ << ";" << id << ";RELIABLE]");
+ PROFILE(g_profiler->remove(peerIdentifier1.str()));
+ PROFILE(std::stringstream peerIdentifier2);
+ PROFILE(peerIdentifier2 << "sendPackets[" << m_connection->getDesc()
+ << ";" << id << ";RELIABLE]");
+ PROFILE(ScopeProfiler peerprofiler(g_profiler, peerIdentifier2.str(), SPT_AVG));
+
+ delete this;
+}
+
+UDPPeer::UDPPeer(u16 a_id, Address a_address, Connection* connection) :
+ Peer(a_address,a_id,connection),
+ m_pending_disconnect(false),
+ resend_timeout(0.5),
+ m_legacy_peer(true)
+{
+}
+
+bool UDPPeer::getAddress(MTProtocols type,Address& toset)
+{
+ if ((type == MTP_UDP) || (type == MTP_MINETEST_RELIABLE_UDP) || (type == MTP_PRIMARY))
+ {
+ toset = address;
+ return true;
+ }
+
+ return false;
+}
+
+void UDPPeer::setNonLegacyPeer()
+{
+ m_legacy_peer = false;
+ for(unsigned int i=0; i< CHANNEL_COUNT; i++)
+ {
+ channels->setWindowSize(g_settings->getU16("max_packets_per_iteration"));
+ }
+}
+
+void UDPPeer::reportRTT(float rtt)
+{
+ if (rtt < 0.0) {
+ return;
+ }
+ RTTStatistics(rtt,"rudp",MAX_RELIABLE_WINDOW_SIZE*10);
+
+ float timeout = getStat(AVG_RTT) * RESEND_TIMEOUT_FACTOR;
+ if (timeout < RESEND_TIMEOUT_MIN)
+ timeout = RESEND_TIMEOUT_MIN;
+ if (timeout > RESEND_TIMEOUT_MAX)
+ timeout = RESEND_TIMEOUT_MAX;
+
+ JMutexAutoLock usage_lock(m_exclusive_access_mutex);
+ resend_timeout = timeout;
+}
+
+bool UDPPeer::Ping(float dtime,SharedBuffer<u8>& data)
+{
+ m_ping_timer += dtime;
+ if (m_ping_timer >= PING_TIMEOUT)
+ {
+ // Create and send PING packet
+ writeU8(&data[0], TYPE_CONTROL);
+ writeU8(&data[1], CONTROLTYPE_PING);
+ m_ping_timer = 0.0;
+ return true;
+ }
+ return false;
+}
+
+void UDPPeer::PutReliableSendCommand(ConnectionCommand &c,
+ unsigned int max_packet_size)
+{
+ if (m_pending_disconnect)
+ return;
+
+ if ( channels[c.channelnum].queued_commands.empty() &&
+ /* don't queue more packets then window size */
+ (channels[c.channelnum].queued_reliables.size()
+ < (channels[c.channelnum].getWindowSize()/2))) {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" processing reliable command for peer id: " << c.peer_id
+ <<" data size: " << c.data.getSize() << std::endl);
+ if (!processReliableSendCommand(c,max_packet_size)) {
+ channels[c.channelnum].queued_commands.push_back(c);
+ }
+ }
+ else {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" Queueing reliable command for peer id: " << c.peer_id
+ <<" data size: " << c.data.getSize() <<std::endl);
+ channels[c.channelnum].queued_commands.push_back(c);
+ }
+}
+
+bool UDPPeer::processReliableSendCommand(
+ ConnectionCommand &c,
+ unsigned int max_packet_size)
+{
+ if (m_pending_disconnect)
+ return true;
+
+ u32 chunksize_max = max_packet_size
+ - BASE_HEADER_SIZE
+ - RELIABLE_HEADER_SIZE;
+
+ sanity_check(c.data.getSize() < MAX_RELIABLE_WINDOW_SIZE*512);
+
+ std::list<SharedBuffer<u8> > originals;
+ u16 split_sequence_number = channels[c.channelnum].readNextSplitSeqNum();
+
+ if (c.raw)
+ {
+ originals.push_back(c.data);
+ }
+ else {
+ originals = makeAutoSplitPacket(c.data, chunksize_max,split_sequence_number);
+ channels[c.channelnum].setNextSplitSeqNum(split_sequence_number);
+ }
+
+ bool have_sequence_number = true;
+ bool have_initial_sequence_number = false;
+ std::queue<BufferedPacket> toadd;
+ volatile u16 initial_sequence_number = 0;
+
+ for(std::list<SharedBuffer<u8> >::iterator i = originals.begin();
+ i != originals.end(); ++i)
+ {
+ u16 seqnum = channels[c.channelnum].getOutgoingSequenceNumber(have_sequence_number);
+
+ /* oops, we don't have enough sequence numbers to send this packet */
+ if (!have_sequence_number)
+ break;
+
+ if (!have_initial_sequence_number)
+ {
+ initial_sequence_number = seqnum;
+ have_initial_sequence_number = true;
+ }
+
+ SharedBuffer<u8> reliable = makeReliablePacket(*i, seqnum);
+
+ // Add base headers and make a packet
+ BufferedPacket p = con::makePacket(address, reliable,
+ m_connection->GetProtocolID(), m_connection->GetPeerID(),
+ c.channelnum);
+
+ toadd.push(p);
+ }
+
+ if (have_sequence_number) {
+ volatile u16 pcount = 0;
+ while(toadd.size() > 0) {
+ BufferedPacket p = toadd.front();
+ toadd.pop();
+// LOG(dout_con<<connection->getDesc()
+// << " queuing reliable packet for peer_id: " << c.peer_id
+// << " channel: " << (c.channelnum&0xFF)
+// << " seqnum: " << readU16(&p.data[BASE_HEADER_SIZE+1])
+// << std::endl)
+ channels[c.channelnum].queued_reliables.push(p);
+ pcount++;
+ }
+ sanity_check(channels[c.channelnum].queued_reliables.size() < 0xFFFF);
+ return true;
+ }
+ else {
+ volatile u16 packets_available = toadd.size();
+ /* we didn't get a single sequence number no need to fill queue */
+ if (!have_initial_sequence_number)
+ {
+ return false;
+ }
+ while(toadd.size() > 0) {
+ /* remove packet */
+ toadd.pop();
+
+ bool successfully_put_back_sequence_number
+ = channels[c.channelnum].putBackSequenceNumber(
+ (initial_sequence_number+toadd.size() % (SEQNUM_MAX+1)));
+
+ FATAL_ERROR_IF(!successfully_put_back_sequence_number, "error");
+ }
+ LOG(dout_con<<m_connection->getDesc()
+ << " Windowsize exceeded on reliable sending "
+ << c.data.getSize() << " bytes"
+ << std::endl << "\t\tinitial_sequence_number: "
+ << initial_sequence_number
+ << std::endl << "\t\tgot at most : "
+ << packets_available << " packets"
+ << std::endl << "\t\tpackets queued : "
+ << channels[c.channelnum].outgoing_reliables_sent.size()
+ << std::endl);
+ return false;
+ }
+}
+
+void UDPPeer::RunCommandQueues(
+ unsigned int max_packet_size,
+ unsigned int maxcommands,
+ unsigned int maxtransfer)
+{
+
+ for (unsigned int i = 0; i < CHANNEL_COUNT; i++) {
+ unsigned int commands_processed = 0;
+
+ if ((channels[i].queued_commands.size() > 0) &&
+ (channels[i].queued_reliables.size() < maxtransfer) &&
+ (commands_processed < maxcommands)) {
+ try {
+ ConnectionCommand c = channels[i].queued_commands.front();
+
+ LOG(dout_con << m_connection->getDesc()
+ << " processing queued reliable command " << std::endl);
+
+ // Packet is processed, remove it from queue
+ if (processReliableSendCommand(c,max_packet_size)) {
+ channels[i].queued_commands.pop_front();
+ } else {
+ LOG(dout_con << m_connection->getDesc()
+ << " Failed to queue packets for peer_id: " << c.peer_id
+ << ", delaying sending of " << c.data.getSize()
+ << " bytes" << std::endl);
+ }
+ }
+ catch (ItemNotFoundException &e) {
+ // intentionally empty
+ }
+ }
+ }
+}
+
+u16 UDPPeer::getNextSplitSequenceNumber(u8 channel)
+{
+ assert(channel < CHANNEL_COUNT); // Pre-condition
+ return channels[channel].readNextIncomingSeqNum();
+}
+
+void UDPPeer::setNextSplitSequenceNumber(u8 channel, u16 seqnum)
+{
+ assert(channel < CHANNEL_COUNT); // Pre-condition
+ channels[channel].setNextSplitSeqNum(seqnum);
+}
+
+SharedBuffer<u8> UDPPeer::addSpiltPacket(u8 channel,
+ BufferedPacket toadd,
+ bool reliable)
+{
+ assert(channel < CHANNEL_COUNT); // Pre-condition
+ return channels[channel].incoming_splits.insert(toadd,reliable);
+}
+
+/******************************************************************************/
+/* Connection Threads */
+/******************************************************************************/
+
+ConnectionSendThread::ConnectionSendThread( unsigned int max_packet_size,
+ float timeout) :
+ m_connection(NULL),
+ m_max_packet_size(max_packet_size),
+ m_timeout(timeout),
+ m_max_commands_per_iteration(1),
+ m_max_data_packets_per_iteration(g_settings->getU16("max_packets_per_iteration")),
+ m_max_packets_requeued(256)
+{
+}
+
+void * ConnectionSendThread::Thread()
+{
+ assert(m_connection != NULL);
+ ThreadStarted();
+ log_register_thread("ConnectionSend");
+
+ LOG(dout_con<<m_connection->getDesc()
+ <<"ConnectionSend thread started"<<std::endl);
+
+ u32 curtime = porting::getTimeMs();
+ u32 lasttime = curtime;
+
+ PROFILE(std::stringstream ThreadIdentifier);
+ PROFILE(ThreadIdentifier << "ConnectionSend: [" << m_connection->getDesc() << "]");
+
+ porting::setThreadName("ConnectionSend");
+
+ /* if stop is requested don't stop immediately but try to send all */
+ /* packets first */
+ while(!StopRequested() || packetsQueued()) {
+ BEGIN_DEBUG_EXCEPTION_HANDLER
+ PROFILE(ScopeProfiler sp(g_profiler, ThreadIdentifier.str(), SPT_AVG));
+
+ m_iteration_packets_avaialble = m_max_data_packets_per_iteration;
+
+ /* wait for trigger or timeout */
+ m_send_sleep_semaphore.Wait(50);
+
+ /* remove all triggers */
+ while(m_send_sleep_semaphore.Wait(0)) {}
+
+ lasttime = curtime;
+ curtime = porting::getTimeMs();
+ float dtime = CALC_DTIME(lasttime,curtime);
+
+ /* first do all the reliable stuff */
+ runTimeouts(dtime);
+
+ /* translate commands to packets */
+ ConnectionCommand c = m_connection->m_command_queue.pop_frontNoEx(0);
+ while(c.type != CONNCMD_NONE)
+ {
+ if (c.reliable)
+ processReliableCommand(c);
+ else
+ processNonReliableCommand(c);
+
+ c = m_connection->m_command_queue.pop_frontNoEx(0);
+ }
+
+ /* send non reliable packets */
+ sendPackets(dtime);
+
+ END_DEBUG_EXCEPTION_HANDLER(errorstream);
+ }
+
+ PROFILE(g_profiler->remove(ThreadIdentifier.str()));
+ return NULL;
+}
+
+void ConnectionSendThread::Trigger()
+{
+ m_send_sleep_semaphore.Post();
+}
+
+bool ConnectionSendThread::packetsQueued()
+{
+ std::list<u16> peerIds = m_connection->getPeerIDs();
+
+ if (!m_outgoing_queue.empty() && !peerIds.empty())
+ return true;
+
+ for(std::list<u16>::iterator j = peerIds.begin();
+ j != peerIds.end(); ++j)
+ {
+ PeerHelper peer = m_connection->getPeerNoEx(*j);
+
+ if (!peer)
+ continue;
+
+ if (dynamic_cast<UDPPeer*>(&peer) == 0)
+ continue;
+
+ for(u16 i=0; i < CHANNEL_COUNT; i++) {
+ Channel *channel = &(dynamic_cast<UDPPeer*>(&peer))->channels[i];
+
+ if (channel->queued_commands.size() > 0) {
+ return true;
+ }
+ }
+ }
+
+
+ return false;
+}
+
+void ConnectionSendThread::runTimeouts(float dtime)
+{
+ std::list<u16> timeouted_peers;
+ std::list<u16> peerIds = m_connection->getPeerIDs();
+
+ for(std::list<u16>::iterator j = peerIds.begin();
+ j != peerIds.end(); ++j)
+ {
+ PeerHelper peer = m_connection->getPeerNoEx(*j);
+
+ if (!peer)
+ continue;
+
+ if (dynamic_cast<UDPPeer*>(&peer) == 0)
+ continue;
+
+ PROFILE(std::stringstream peerIdentifier);
+ PROFILE(peerIdentifier << "runTimeouts[" << m_connection->getDesc()
+ << ";" << *j << ";RELIABLE]");
+ PROFILE(ScopeProfiler peerprofiler(g_profiler, peerIdentifier.str(), SPT_AVG));
+
+ SharedBuffer<u8> data(2); // data for sending ping, required here because of goto
+
+ /*
+ Check peer timeout
+ */
+ if (peer->isTimedOut(m_timeout))
+ {
+ infostream<<m_connection->getDesc()
+ <<"RunTimeouts(): Peer "<<peer->id
+ <<" has timed out."
+ <<" (source=peer->timeout_counter)"
+ <<std::endl;
+ // Add peer to the list
+ timeouted_peers.push_back(peer->id);
+ // Don't bother going through the buffers of this one
+ continue;
+ }
+
+ float resend_timeout = dynamic_cast<UDPPeer*>(&peer)->getResendTimeout();
+ for(u16 i=0; i<CHANNEL_COUNT; i++)
+ {
+ std::list<BufferedPacket> timed_outs;
+ Channel *channel = &(dynamic_cast<UDPPeer*>(&peer))->channels[i];
+
+ if (dynamic_cast<UDPPeer*>(&peer)->getLegacyPeer())
+ channel->setWindowSize(g_settings->getU16("workaround_window_size"));
+
+ // Remove timed out incomplete unreliable split packets
+ channel->incoming_splits.removeUnreliableTimedOuts(dtime, m_timeout);
+
+ // Increment reliable packet times
+ channel->outgoing_reliables_sent.incrementTimeouts(dtime);
+
+ unsigned int numpeers = m_connection->m_peers.size();
+
+ if (numpeers == 0)
+ return;
+
+ // Re-send timed out outgoing reliables
+ timed_outs = channel->
+ outgoing_reliables_sent.getTimedOuts(resend_timeout,
+ (m_max_data_packets_per_iteration/numpeers));
+
+ channel->UpdatePacketLossCounter(timed_outs.size());
+ g_profiler->graphAdd("packets_lost", timed_outs.size());
+
+ m_iteration_packets_avaialble -= timed_outs.size();
+
+ for(std::list<BufferedPacket>::iterator k = timed_outs.begin();
+ k != timed_outs.end(); ++k)
+ {
+ u16 peer_id = readPeerId(*(k->data));
+ u8 channelnum = readChannel(*(k->data));
+ u16 seqnum = readU16(&(k->data[BASE_HEADER_SIZE+1]));
+
+ channel->UpdateBytesLost(k->data.getSize());
+ k->resend_count++;
+
+ LOG(derr_con<<m_connection->getDesc()
+ <<"RE-SENDING timed-out RELIABLE to "
+ << k->address.serializeString()
+ << "(t/o="<<resend_timeout<<"): "
+ <<"from_peer_id="<<peer_id
+ <<", channel="<<((int)channelnum&0xff)
+ <<", seqnum="<<seqnum
+ <<std::endl);
+
+ rawSend(*k);
+
+ // do not handle rtt here as we can't decide if this packet was
+ // lost or really takes more time to transmit
+ }
+ channel->UpdateTimers(dtime,dynamic_cast<UDPPeer*>(&peer)->getLegacyPeer());
+ }
+
+ /* send ping if necessary */
+ if (dynamic_cast<UDPPeer*>(&peer)->Ping(dtime,data)) {
+ LOG(dout_con<<m_connection->getDesc()
+ <<"Sending ping for peer_id: "
+ << dynamic_cast<UDPPeer*>(&peer)->id <<std::endl);
+ /* this may fail if there ain't a sequence number left */
+ if (!rawSendAsPacket(dynamic_cast<UDPPeer*>(&peer)->id, 0, data, true))
+ {
+ //retrigger with reduced ping interval
+ dynamic_cast<UDPPeer*>(&peer)->Ping(4.0,data);
+ }
+ }
+
+ dynamic_cast<UDPPeer*>(&peer)->RunCommandQueues(m_max_packet_size,
+ m_max_commands_per_iteration,
+ m_max_packets_requeued);
+ }
+
+ // Remove timed out peers
+ for(std::list<u16>::iterator i = timeouted_peers.begin();
+ i != timeouted_peers.end(); ++i)
+ {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"RunTimeouts(): Removing peer "<<(*i)<<std::endl);
+ m_connection->deletePeer(*i, true);
+ }
+}
+
+void ConnectionSendThread::rawSend(const BufferedPacket &packet)
+{
+ try{
+ m_connection->m_udpSocket.Send(packet.address, *packet.data,
+ packet.data.getSize());
+ LOG(dout_con <<m_connection->getDesc()
+ << " rawSend: " << packet.data.getSize()
+ << " bytes sent" << std::endl);
+ } catch(SendFailedException &e) {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"Connection::rawSend(): SendFailedException: "
+ <<packet.address.serializeString()<<std::endl);
+ }
+}
+
+void ConnectionSendThread::sendAsPacketReliable(BufferedPacket& p, Channel* channel)
+{
+ try{
+ p.absolute_send_time = porting::getTimeMs();
+ // Buffer the packet
+ channel->outgoing_reliables_sent.insert(p,
+ (channel->readOutgoingSequenceNumber() - MAX_RELIABLE_WINDOW_SIZE)
+ % (MAX_RELIABLE_WINDOW_SIZE+1));
+ }
+ catch(AlreadyExistsException &e)
+ {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"WARNING: Going to send a reliable packet"
+ <<" in outgoing buffer" <<std::endl);
+ }
+
+ // Send the packet
+ rawSend(p);
+}
+
+bool ConnectionSendThread::rawSendAsPacket(u16 peer_id, u8 channelnum,
+ SharedBuffer<u8> data, bool reliable)
+{
+ PeerHelper peer = m_connection->getPeerNoEx(peer_id);
+ if (!peer) {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" INFO: dropped packet for non existent peer_id: "
+ << peer_id << std::endl);
+ FATAL_ERROR_IF(!reliable, "Trying to send raw packet reliable but no peer found!");
+ return false;
+ }
+ Channel *channel = &(dynamic_cast<UDPPeer*>(&peer)->channels[channelnum]);
+
+ if (reliable)
+ {
+ bool have_sequence_number_for_raw_packet = true;
+ u16 seqnum =
+ channel->getOutgoingSequenceNumber(have_sequence_number_for_raw_packet);
+
+ if (!have_sequence_number_for_raw_packet)
+ return false;
+
+ SharedBuffer<u8> reliable = makeReliablePacket(data, seqnum);
+ Address peer_address;
+ peer->getAddress(MTP_MINETEST_RELIABLE_UDP, peer_address);
+
+ // Add base headers and make a packet
+ BufferedPacket p = con::makePacket(peer_address, reliable,
+ m_connection->GetProtocolID(), m_connection->GetPeerID(),
+ channelnum);
+
+ // first check if our send window is already maxed out
+ if (channel->outgoing_reliables_sent.size()
+ < channel->getWindowSize()) {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" INFO: sending a reliable packet to peer_id " << peer_id
+ <<" channel: " << channelnum
+ <<" seqnum: " << seqnum << std::endl);
+ sendAsPacketReliable(p,channel);
+ return true;
+ }
+ else {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" INFO: queueing reliable packet for peer_id: " << peer_id
+ <<" channel: " << channelnum
+ <<" seqnum: " << seqnum << std::endl);
+ channel->queued_reliables.push(p);
+ return false;
+ }
+ }
+ else
+ {
+ Address peer_address;
+
+ if (peer->getAddress(MTP_UDP, peer_address))
+ {
+ // Add base headers and make a packet
+ BufferedPacket p = con::makePacket(peer_address, data,
+ m_connection->GetProtocolID(), m_connection->GetPeerID(),
+ channelnum);
+
+ // Send the packet
+ rawSend(p);
+ return true;
+ }
+ else {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" INFO: dropped unreliable packet for peer_id: " << peer_id
+ <<" because of (yet) missing udp address" << std::endl);
+ return false;
+ }
+ }
+
+ //never reached
+ return false;
+}
+
+void ConnectionSendThread::processReliableCommand(ConnectionCommand &c)
+{
+ assert(c.reliable); // Pre-condition
+
+ switch(c.type) {
+ case CONNCMD_NONE:
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UDP processing reliable CONNCMD_NONE"<<std::endl);
+ return;
+
+ case CONNCMD_SEND:
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UDP processing reliable CONNCMD_SEND"<<std::endl);
+ sendReliable(c);
+ return;
+
+ case CONNCMD_SEND_TO_ALL:
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UDP processing CONNCMD_SEND_TO_ALL"<<std::endl);
+ sendToAllReliable(c);
+ return;
+
+ case CONCMD_CREATE_PEER:
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UDP processing reliable CONCMD_CREATE_PEER"<<std::endl);
+ if (!rawSendAsPacket(c.peer_id,c.channelnum,c.data,c.reliable))
+ {
+ /* put to queue if we couldn't send it immediately */
+ sendReliable(c);
+ }
+ return;
+
+ case CONCMD_DISABLE_LEGACY:
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UDP processing reliable CONCMD_DISABLE_LEGACY"<<std::endl);
+ if (!rawSendAsPacket(c.peer_id,c.channelnum,c.data,c.reliable))
+ {
+ /* put to queue if we couldn't send it immediately */
+ sendReliable(c);
+ }
+ return;
+
+ case CONNCMD_SERVE:
+ case CONNCMD_CONNECT:
+ case CONNCMD_DISCONNECT:
+ case CONCMD_ACK:
+ FATAL_ERROR("Got command that shouldn't be reliable as reliable command");
+ default:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" Invalid reliable command type: " << c.type <<std::endl);
+ }
+}
+
+
+void ConnectionSendThread::processNonReliableCommand(ConnectionCommand &c)
+{
+ assert(!c.reliable); // Pre-condition
+
+ switch(c.type) {
+ case CONNCMD_NONE:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_NONE"<<std::endl);
+ return;
+ case CONNCMD_SERVE:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_SERVE port="
+ <<c.address.serializeString()<<std::endl);
+ serve(c.address);
+ return;
+ case CONNCMD_CONNECT:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_CONNECT"<<std::endl);
+ connect(c.address);
+ return;
+ case CONNCMD_DISCONNECT:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_DISCONNECT"<<std::endl);
+ disconnect();
+ return;
+ case CONNCMD_DISCONNECT_PEER:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_DISCONNECT_PEER"<<std::endl);
+ disconnect_peer(c.peer_id);
+ return;
+ case CONNCMD_SEND:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_SEND"<<std::endl);
+ send(c.peer_id, c.channelnum, c.data);
+ return;
+ case CONNCMD_SEND_TO_ALL:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONNCMD_SEND_TO_ALL"<<std::endl);
+ sendToAll(c.channelnum, c.data);
+ return;
+ case CONCMD_ACK:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" UDP processing CONCMD_ACK"<<std::endl);
+ sendAsPacket(c.peer_id,c.channelnum,c.data,true);
+ return;
+ case CONCMD_CREATE_PEER:
+ FATAL_ERROR("Got command that should be reliable as unreliable command");
+ default:
+ LOG(dout_con<<m_connection->getDesc()
+ <<" Invalid command type: " << c.type <<std::endl);
+ }
+}
+
+void ConnectionSendThread::serve(Address bind_address)
+{
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UDP serving at port " << bind_address.serializeString() <<std::endl);
+ try{
+ m_connection->m_udpSocket.Bind(bind_address);
+ m_connection->SetPeerID(PEER_ID_SERVER);
+ }
+ catch(SocketException &e) {
+ // Create event
+ ConnectionEvent ce;
+ ce.bindFailed();
+ m_connection->putEvent(ce);
+ }
+}
+
+void ConnectionSendThread::connect(Address address)
+{
+ LOG(dout_con<<m_connection->getDesc()<<" connecting to "<<address.serializeString()
+ <<":"<<address.getPort()<<std::endl);
+
+ UDPPeer *peer = m_connection->createServerPeer(address);
+
+ // Create event
+ ConnectionEvent e;
+ e.peerAdded(peer->id, peer->address);
+ m_connection->putEvent(e);
+
+ Address bind_addr;
+
+ if (address.isIPv6())
+ bind_addr.setAddress((IPv6AddressBytes*) NULL);
+ else
+ bind_addr.setAddress(0,0,0,0);
+
+ m_connection->m_udpSocket.Bind(bind_addr);
+
+ // Send a dummy packet to server with peer_id = PEER_ID_INEXISTENT
+ m_connection->SetPeerID(PEER_ID_INEXISTENT);
+ NetworkPacket pkt(0,0);
+ m_connection->Send(PEER_ID_SERVER, 0, &pkt, true);
+}
+
+void ConnectionSendThread::disconnect()
+{
+ LOG(dout_con<<m_connection->getDesc()<<" disconnecting"<<std::endl);
+
+ // Create and send DISCO packet
+ SharedBuffer<u8> data(2);
+ writeU8(&data[0], TYPE_CONTROL);
+ writeU8(&data[1], CONTROLTYPE_DISCO);
+
+
+ // Send to all
+ std::list<u16> peerids = m_connection->getPeerIDs();
+
+ for (std::list<u16>::iterator i = peerids.begin();
+ i != peerids.end();
+ i++)
+ {
+ sendAsPacket(*i, 0,data,false);
+ }
+}
+
+void ConnectionSendThread::disconnect_peer(u16 peer_id)
+{
+ LOG(dout_con<<m_connection->getDesc()<<" disconnecting peer"<<std::endl);
+
+ // Create and send DISCO packet
+ SharedBuffer<u8> data(2);
+ writeU8(&data[0], TYPE_CONTROL);
+ writeU8(&data[1], CONTROLTYPE_DISCO);
+ sendAsPacket(peer_id, 0,data,false);
+
+ PeerHelper peer = m_connection->getPeerNoEx(peer_id);
+
+ if (!peer)
+ return;
+
+ if (dynamic_cast<UDPPeer*>(&peer) == 0)
+ {
+ return;
+ }
+
+ dynamic_cast<UDPPeer*>(&peer)->m_pending_disconnect = true;
+}
+
+void ConnectionSendThread::send(u16 peer_id, u8 channelnum,
+ SharedBuffer<u8> data)
+{
+ assert(channelnum < CHANNEL_COUNT); // Pre-condition
+
+ PeerHelper peer = m_connection->getPeerNoEx(peer_id);
+ if (!peer)
+ {
+ LOG(dout_con<<m_connection->getDesc()<<" peer: peer_id="<<peer_id
+ << ">>>NOT<<< found on sending packet"
+ << ", channel " << (channelnum % 0xFF)
+ << ", size: " << data.getSize() <<std::endl);
+ return;
+ }
+
+ LOG(dout_con<<m_connection->getDesc()<<" sending to peer_id="<<peer_id
+ << ", channel " << (channelnum % 0xFF)
+ << ", size: " << data.getSize() <<std::endl);
+
+ u16 split_sequence_number = peer->getNextSplitSequenceNumber(channelnum);
+
+ u32 chunksize_max = m_max_packet_size - BASE_HEADER_SIZE;
+ std::list<SharedBuffer<u8> > originals;
+
+ originals = makeAutoSplitPacket(data, chunksize_max,split_sequence_number);
+
+ peer->setNextSplitSequenceNumber(channelnum,split_sequence_number);
+
+ for(std::list<SharedBuffer<u8> >::iterator i = originals.begin();
+ i != originals.end(); ++i)
+ {
+ SharedBuffer<u8> original = *i;
+ sendAsPacket(peer_id, channelnum, original);
+ }
+}
+
+void ConnectionSendThread::sendReliable(ConnectionCommand &c)
+{
+ PeerHelper peer = m_connection->getPeerNoEx(c.peer_id);
+ if (!peer)
+ return;
+
+ peer->PutReliableSendCommand(c,m_max_packet_size);
+}
+
+void ConnectionSendThread::sendToAll(u8 channelnum, SharedBuffer<u8> data)
+{
+ std::list<u16> peerids = m_connection->getPeerIDs();
+
+ for (std::list<u16>::iterator i = peerids.begin();
+ i != peerids.end();
+ i++)
+ {
+ send(*i, channelnum, data);
+ }
+}
+
+void ConnectionSendThread::sendToAllReliable(ConnectionCommand &c)
+{
+ std::list<u16> peerids = m_connection->getPeerIDs();
+
+ for (std::list<u16>::iterator i = peerids.begin();
+ i != peerids.end();
+ i++)
+ {
+ PeerHelper peer = m_connection->getPeerNoEx(*i);
+
+ if (!peer)
+ continue;
+
+ peer->PutReliableSendCommand(c,m_max_packet_size);
+ }
+}
+
+void ConnectionSendThread::sendPackets(float dtime)
+{
+ std::list<u16> peerIds = m_connection->getPeerIDs();
+ std::list<u16> pendingDisconnect;
+ std::map<u16,bool> pending_unreliable;
+
+ for(std::list<u16>::iterator
+ j = peerIds.begin();
+ j != peerIds.end(); ++j)
+ {
+ PeerHelper peer = m_connection->getPeerNoEx(*j);
+ //peer may have been removed
+ if (!peer) {
+ LOG(dout_con<<m_connection->getDesc()<< " Peer not found: peer_id=" << *j << std::endl);
+ continue;
+ }
+ peer->m_increment_packets_remaining = m_iteration_packets_avaialble/m_connection->m_peers.size();
+
+ if (dynamic_cast<UDPPeer*>(&peer) == 0)
+ {
+ continue;
+ }
+
+ if (dynamic_cast<UDPPeer*>(&peer)->m_pending_disconnect)
+ {
+ pendingDisconnect.push_back(*j);
+ }
+
+ PROFILE(std::stringstream peerIdentifier);
+ PROFILE(peerIdentifier << "sendPackets[" << m_connection->getDesc() << ";" << *j << ";RELIABLE]");
+ PROFILE(ScopeProfiler peerprofiler(g_profiler, peerIdentifier.str(), SPT_AVG));
+
+ LOG(dout_con<<m_connection->getDesc()
+ << " Handle per peer queues: peer_id=" << *j
+ << " packet quota: " << peer->m_increment_packets_remaining << std::endl);
+ // first send queued reliable packets for all peers (if possible)
+ for (unsigned int i=0; i < CHANNEL_COUNT; i++)
+ {
+ u16 next_to_ack = 0;
+ dynamic_cast<UDPPeer*>(&peer)->channels[i].outgoing_reliables_sent.getFirstSeqnum(next_to_ack);
+ u16 next_to_receive = 0;
+ dynamic_cast<UDPPeer*>(&peer)->channels[i].incoming_reliables.getFirstSeqnum(next_to_receive);
+
+ LOG(dout_con<<m_connection->getDesc()<< "\t channel: "
+ << i << ", peer quota:"
+ << peer->m_increment_packets_remaining
+ << std::endl
+ << "\t\t\treliables on wire: "
+ << dynamic_cast<UDPPeer*>(&peer)->channels[i].outgoing_reliables_sent.size()
+ << ", waiting for ack for " << next_to_ack
+ << std::endl
+ << "\t\t\tincoming_reliables: "
+ << dynamic_cast<UDPPeer*>(&peer)->channels[i].incoming_reliables.size()
+ << ", next reliable packet: "
+ << dynamic_cast<UDPPeer*>(&peer)->channels[i].readNextIncomingSeqNum()
+ << ", next queued: " << next_to_receive
+ << std::endl
+ << "\t\t\treliables queued : "
+ << dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.size()
+ << std::endl
+ << "\t\t\tqueued commands : "
+ << dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_commands.size()
+ << std::endl);
+
+ while ((dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.size() > 0) &&
+ (dynamic_cast<UDPPeer*>(&peer)->channels[i].outgoing_reliables_sent.size()
+ < dynamic_cast<UDPPeer*>(&peer)->channels[i].getWindowSize())&&
+ (peer->m_increment_packets_remaining > 0))
+ {
+ BufferedPacket p = dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.front();
+ dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.pop();
+ Channel* channel = &(dynamic_cast<UDPPeer*>(&peer)->channels[i]);
+ LOG(dout_con<<m_connection->getDesc()
+ <<" INFO: sending a queued reliable packet "
+ <<" channel: " << i
+ <<", seqnum: " << readU16(&p.data[BASE_HEADER_SIZE+1])
+ << std::endl);
+ sendAsPacketReliable(p,channel);
+ peer->m_increment_packets_remaining--;
+ }
+ }
+ }
+
+ if (m_outgoing_queue.size())
+ {
+ LOG(dout_con<<m_connection->getDesc()
+ << " Handle non reliable queue ("
+ << m_outgoing_queue.size() << " pkts)" << std::endl);
+ }
+
+ unsigned int initial_queuesize = m_outgoing_queue.size();
+ /* send non reliable packets*/
+ for(unsigned int i=0;i < initial_queuesize;i++) {
+ OutgoingPacket packet = m_outgoing_queue.front();
+ m_outgoing_queue.pop();
+
+ if (packet.reliable)
+ continue;
+
+ PeerHelper peer = m_connection->getPeerNoEx(packet.peer_id);
+ if (!peer) {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" Outgoing queue: peer_id="<<packet.peer_id
+ << ">>>NOT<<< found on sending packet"
+ << ", channel " << (packet.channelnum % 0xFF)
+ << ", size: " << packet.data.getSize() <<std::endl);
+ continue;
+ }
+ /* send acks immediately */
+ else if (packet.ack)
+ {
+ rawSendAsPacket(packet.peer_id, packet.channelnum,
+ packet.data, packet.reliable);
+ peer->m_increment_packets_remaining =
+ MYMIN(0,peer->m_increment_packets_remaining--);
+ }
+ else if (
+ ( peer->m_increment_packets_remaining > 0) ||
+ (StopRequested())) {
+ rawSendAsPacket(packet.peer_id, packet.channelnum,
+ packet.data, packet.reliable);
+ peer->m_increment_packets_remaining--;
+ }
+ else {
+ m_outgoing_queue.push(packet);
+ pending_unreliable[packet.peer_id] = true;
+ }
+ }
+
+ for(std::list<u16>::iterator
+ k = pendingDisconnect.begin();
+ k != pendingDisconnect.end(); ++k)
+ {
+ if (!pending_unreliable[*k])
+ {
+ m_connection->deletePeer(*k,false);
+ }
+ }
+}
+
+void ConnectionSendThread::sendAsPacket(u16 peer_id, u8 channelnum,
+ SharedBuffer<u8> data, bool ack)
+{
+ OutgoingPacket packet(peer_id, channelnum, data, false, ack);
+ m_outgoing_queue.push(packet);
+}
+
+ConnectionReceiveThread::ConnectionReceiveThread(unsigned int max_packet_size) :
+ m_connection(NULL)
+{
+}
+
+void * ConnectionReceiveThread::Thread()
+{
+ assert(m_connection != NULL);
+ ThreadStarted();
+ log_register_thread("ConnectionReceive");
+
+ LOG(dout_con<<m_connection->getDesc()
+ <<"ConnectionReceive thread started"<<std::endl);
+
+ PROFILE(std::stringstream ThreadIdentifier);
+ PROFILE(ThreadIdentifier << "ConnectionReceive: [" << m_connection->getDesc() << "]");
+
+ porting::setThreadName("ConnectionReceive");
+
+#ifdef DEBUG_CONNECTION_KBPS
+ u32 curtime = porting::getTimeMs();
+ u32 lasttime = curtime;
+ float debug_print_timer = 0.0;
+#endif
+
+ while(!StopRequested()) {
+ BEGIN_DEBUG_EXCEPTION_HANDLER
+ PROFILE(ScopeProfiler sp(g_profiler, ThreadIdentifier.str(), SPT_AVG));
+
+#ifdef DEBUG_CONNECTION_KBPS
+ lasttime = curtime;
+ curtime = porting::getTimeMs();
+ float dtime = CALC_DTIME(lasttime,curtime);
+#endif
+
+ /* receive packets */
+ receive();
+
+#ifdef DEBUG_CONNECTION_KBPS
+ debug_print_timer += dtime;
+ if (debug_print_timer > 20.0) {
+ debug_print_timer -= 20.0;
+
+ std::list<u16> peerids = m_connection->getPeerIDs();
+
+ for (std::list<u16>::iterator i = peerids.begin();
+ i != peerids.end();
+ i++)
+ {
+ PeerHelper peer = m_connection->getPeerNoEx(*i);
+ if (!peer)
+ continue;
+
+ float peer_current = 0.0;
+ float peer_loss = 0.0;
+ float avg_rate = 0.0;
+ float avg_loss = 0.0;
+
+ for(u16 j=0; j<CHANNEL_COUNT; j++)
+ {
+ peer_current +=peer->channels[j].getCurrentDownloadRateKB();
+ peer_loss += peer->channels[j].getCurrentLossRateKB();
+ avg_rate += peer->channels[j].getAvgDownloadRateKB();
+ avg_loss += peer->channels[j].getAvgLossRateKB();
+ }
+
+ std::stringstream output;
+ output << std::fixed << std::setprecision(1);
+ output << "OUT to Peer " << *i << " RATES (good / loss) " << std::endl;
+ output << "\tcurrent (sum): " << peer_current << "kb/s "<< peer_loss << "kb/s" << std::endl;
+ output << "\taverage (sum): " << avg_rate << "kb/s "<< avg_loss << "kb/s" << std::endl;
+ output << std::setfill(' ');
+ for(u16 j=0; j<CHANNEL_COUNT; j++)
+ {
+ output << "\tcha " << j << ":"
+ << " CUR: " << std::setw(6) << peer->channels[j].getCurrentDownloadRateKB() <<"kb/s"
+ << " AVG: " << std::setw(6) << peer->channels[j].getAvgDownloadRateKB() <<"kb/s"
+ << " MAX: " << std::setw(6) << peer->channels[j].getMaxDownloadRateKB() <<"kb/s"
+ << " /"
+ << " CUR: " << std::setw(6) << peer->channels[j].getCurrentLossRateKB() <<"kb/s"
+ << " AVG: " << std::setw(6) << peer->channels[j].getAvgLossRateKB() <<"kb/s"
+ << " MAX: " << std::setw(6) << peer->channels[j].getMaxLossRateKB() <<"kb/s"
+ << " / WS: " << peer->channels[j].getWindowSize()
+ << std::endl;
+ }
+
+ fprintf(stderr,"%s\n",output.str().c_str());
+ }
+ }
+#endif
+ END_DEBUG_EXCEPTION_HANDLER(errorstream);
+ }
+ PROFILE(g_profiler->remove(ThreadIdentifier.str()));
+ return NULL;
+}
+
+// Receive packets from the network and buffers and create ConnectionEvents
+void ConnectionReceiveThread::receive()
+{
+ // use IPv6 minimum allowed MTU as receive buffer size as this is
+ // theoretical reliable upper boundary of a udp packet for all IPv6 enabled
+ // infrastructure
+ unsigned int packet_maxsize = 1500;
+ SharedBuffer<u8> packetdata(packet_maxsize);
+
+ bool packet_queued = true;
+
+ unsigned int loop_count = 0;
+
+ /* first of all read packets from socket */
+ /* check for incoming data available */
+ while( (loop_count < 10) &&
+ (m_connection->m_udpSocket.WaitData(50))) {
+ loop_count++;
+ try {
+ if (packet_queued) {
+ bool data_left = true;
+ u16 peer_id;
+ SharedBuffer<u8> resultdata;
+ while(data_left) {
+ try {
+ data_left = getFromBuffers(peer_id, resultdata);
+ if (data_left) {
+ ConnectionEvent e;
+ e.dataReceived(peer_id, resultdata);
+ m_connection->putEvent(e);
+ }
+ }
+ catch(ProcessedSilentlyException &e) {
+ /* try reading again */
+ }
+ }
+ packet_queued = false;
+ }
+
+ Address sender;
+ s32 received_size = m_connection->m_udpSocket.Receive(sender, *packetdata, packet_maxsize);
+
+ if ((received_size < BASE_HEADER_SIZE) ||
+ (readU32(&packetdata[0]) != m_connection->GetProtocolID()))
+ {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"Receive(): Invalid incoming packet, "
+ <<"size: " << received_size
+ <<", protocol: "
+ << ((received_size >= 4) ? readU32(&packetdata[0]) : -1)
+ << std::endl);
+ continue;
+ }
+
+ u16 peer_id = readPeerId(*packetdata);
+ u8 channelnum = readChannel(*packetdata);
+
+ if (channelnum > CHANNEL_COUNT-1) {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"Receive(): Invalid channel "<<channelnum<<std::endl);
+ throw InvalidIncomingDataException("Channel doesn't exist");
+ }
+
+ /* preserve original peer_id for later usage */
+ u16 packet_peer_id = peer_id;
+
+ /* Try to identify peer by sender address (may happen on join) */
+ if (peer_id == PEER_ID_INEXISTENT) {
+ peer_id = m_connection->lookupPeer(sender);
+ }
+
+ /* The peer was not found in our lists. Add it. */
+ if (peer_id == PEER_ID_INEXISTENT) {
+ peer_id = m_connection->createPeer(sender, MTP_MINETEST_RELIABLE_UDP, 0);
+ }
+
+ PeerHelper peer = m_connection->getPeerNoEx(peer_id);
+
+ if (!peer) {
+ LOG(dout_con<<m_connection->getDesc()
+ <<" got packet from unknown peer_id: "
+ <<peer_id<<" Ignoring."<<std::endl);
+ continue;
+ }
+
+ // Validate peer address
+
+ Address peer_address;
+
+ if (peer->getAddress(MTP_UDP, peer_address)) {
+ if (peer_address != sender) {
+ LOG(derr_con<<m_connection->getDesc()
+ <<m_connection->getDesc()
+ <<" Peer "<<peer_id<<" sending from different address."
+ " Ignoring."<<std::endl);
+ continue;
+ }
+ }
+ else {
+
+ bool invalid_address = true;
+ if (invalid_address) {
+ LOG(derr_con<<m_connection->getDesc()
+ <<m_connection->getDesc()
+ <<" Peer "<<peer_id<<" unknown."
+ " Ignoring."<<std::endl);
+ continue;
+ }
+ }
+
+
+ /* mark peer as seen with id */
+ if (!(packet_peer_id == PEER_ID_INEXISTENT))
+ peer->setSentWithID();
+
+ peer->ResetTimeout();
+
+ Channel *channel = 0;
+
+ if (dynamic_cast<UDPPeer*>(&peer) != 0)
+ {
+ channel = &(dynamic_cast<UDPPeer*>(&peer)->channels[channelnum]);
+ }
+
+ if (channel != 0) {
+ channel->UpdateBytesReceived(received_size);
+ }
+
+ // Throw the received packet to channel->processPacket()
+
+ // Make a new SharedBuffer from the data without the base headers
+ SharedBuffer<u8> strippeddata(received_size - BASE_HEADER_SIZE);
+ memcpy(*strippeddata, &packetdata[BASE_HEADER_SIZE],
+ strippeddata.getSize());
+
+ try{
+ // Process it (the result is some data with no headers made by us)
+ SharedBuffer<u8> resultdata = processPacket
+ (channel, strippeddata, peer_id, channelnum, false);
+
+ LOG(dout_con<<m_connection->getDesc()
+ <<" ProcessPacket from peer_id: " << peer_id
+ << ",channel: " << (channelnum & 0xFF) << ", returned "
+ << resultdata.getSize() << " bytes" <<std::endl);
+
+ ConnectionEvent e;
+ e.dataReceived(peer_id, resultdata);
+ m_connection->putEvent(e);
+ }
+ catch(ProcessedSilentlyException &e) {
+ }
+ catch(ProcessedQueued &e) {
+ packet_queued = true;
+ }
+ }
+ catch(InvalidIncomingDataException &e) {
+ }
+ catch(ProcessedSilentlyException &e) {
+ }
+ }
+}
+
+bool ConnectionReceiveThread::getFromBuffers(u16 &peer_id, SharedBuffer<u8> &dst)
+{
+ std::list<u16> peerids = m_connection->getPeerIDs();
+
+ for(std::list<u16>::iterator j = peerids.begin();
+ j != peerids.end(); ++j)
+ {
+ PeerHelper peer = m_connection->getPeerNoEx(*j);
+ if (!peer)
+ continue;
+
+ if (dynamic_cast<UDPPeer*>(&peer) == 0)
+ continue;
+
+ for(u16 i=0; i<CHANNEL_COUNT; i++)
+ {
+ Channel *channel = &(dynamic_cast<UDPPeer*>(&peer))->channels[i];
+
+ if (checkIncomingBuffers(channel, peer_id, dst)) {
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+bool ConnectionReceiveThread::checkIncomingBuffers(Channel *channel,
+ u16 &peer_id, SharedBuffer<u8> &dst)
+{
+ u16 firstseqnum = 0;
+ if (channel->incoming_reliables.getFirstSeqnum(firstseqnum))
+ {
+ if (firstseqnum == channel->readNextIncomingSeqNum())
+ {
+ BufferedPacket p = channel->incoming_reliables.popFirst();
+ peer_id = readPeerId(*p.data);
+ u8 channelnum = readChannel(*p.data);
+ u16 seqnum = readU16(&p.data[BASE_HEADER_SIZE+1]);
+
+ LOG(dout_con<<m_connection->getDesc()
+ <<"UNBUFFERING TYPE_RELIABLE"
+ <<" seqnum="<<seqnum
+ <<" peer_id="<<peer_id
+ <<" channel="<<((int)channelnum&0xff)
+ <<std::endl);
+
+ channel->incNextIncomingSeqNum();
+
+ u32 headers_size = BASE_HEADER_SIZE + RELIABLE_HEADER_SIZE;
+ // Get out the inside packet and re-process it
+ SharedBuffer<u8> payload(p.data.getSize() - headers_size);
+ memcpy(*payload, &p.data[headers_size], payload.getSize());
+
+ dst = processPacket(channel, payload, peer_id, channelnum, true);
+ return true;
+ }
+ }
+ return false;
+}
+
+SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
+ SharedBuffer<u8> packetdata, u16 peer_id, u8 channelnum, bool reliable)
+{
+ PeerHelper peer = m_connection->getPeerNoEx(peer_id);
+
+ if (!peer) {
+ errorstream << "Peer not found (possible timeout)" << std::endl;
+ throw ProcessedSilentlyException("Peer not found (possible timeout)");
+ }
+
+ if (packetdata.getSize() < 1)
+ throw InvalidIncomingDataException("packetdata.getSize() < 1");
+
+ u8 type = readU8(&(packetdata[0]));
+
+ if (MAX_UDP_PEERS <= 65535 && peer_id >= MAX_UDP_PEERS) {
+ std::string errmsg = "Invalid peer_id=" + itos(peer_id);
+ errorstream << errmsg << std::endl;
+ throw InvalidIncomingDataException(errmsg.c_str());
+ }
+
+ if (type == TYPE_CONTROL)
+ {
+ if (packetdata.getSize() < 2)
+ throw InvalidIncomingDataException("packetdata.getSize() < 2");
+
+ u8 controltype = readU8(&(packetdata[1]));
+
+ if (controltype == CONTROLTYPE_ACK)
+ {
+ assert(channel != NULL);
+
+ if (packetdata.getSize() < 4) {
+ throw InvalidIncomingDataException(
+ "packetdata.getSize() < 4 (ACK header size)");
+ }
+
+ u16 seqnum = readU16(&packetdata[2]);
+ LOG(dout_con<<m_connection->getDesc()
+ <<" [ CONTROLTYPE_ACK: channelnum="
+ <<((int)channelnum&0xff)<<", peer_id="<<peer_id
+ <<", seqnum="<<seqnum<< " ]"<<std::endl);
+
+ try{
+ BufferedPacket p =
+ channel->outgoing_reliables_sent.popSeqnum(seqnum);
+
+ // only calculate rtt from straight sent packets
+ if (p.resend_count == 0) {
+ // Get round trip time
+ unsigned int current_time = porting::getTimeMs();
+
+ // a overflow is quite unlikely but as it'd result in major
+ // rtt miscalculation we handle it here
+ if (current_time > p.absolute_send_time)
+ {
+ float rtt = (current_time - p.absolute_send_time) / 1000.0;
+
+ // Let peer calculate stuff according to it
+ // (avg_rtt and resend_timeout)
+ dynamic_cast<UDPPeer*>(&peer)->reportRTT(rtt);
+ }
+ else if (p.totaltime > 0)
+ {
+ float rtt = p.totaltime;
+
+ // Let peer calculate stuff according to it
+ // (avg_rtt and resend_timeout)
+ dynamic_cast<UDPPeer*>(&peer)->reportRTT(rtt);
+ }
+ }
+ //put bytes for max bandwidth calculation
+ channel->UpdateBytesSent(p.data.getSize(),1);
+ if (channel->outgoing_reliables_sent.size() == 0)
+ {
+ m_connection->TriggerSend();
+ }
+ }
+ catch(NotFoundException &e) {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"WARNING: ACKed packet not "
+ "in outgoing queue"
+ <<std::endl);
+ channel->UpdatePacketTooLateCounter();
+ }
+ throw ProcessedSilentlyException("Got an ACK");
+ }
+ else if (controltype == CONTROLTYPE_SET_PEER_ID) {
+ // Got a packet to set our peer id
+ if (packetdata.getSize() < 4)
+ throw InvalidIncomingDataException
+ ("packetdata.getSize() < 4 (SET_PEER_ID header size)");
+ u16 peer_id_new = readU16(&packetdata[2]);
+ LOG(dout_con<<m_connection->getDesc()
+ <<"Got new peer id: "<<peer_id_new<<"... "<<std::endl);
+
+ if (m_connection->GetPeerID() != PEER_ID_INEXISTENT)
+ {
+ LOG(derr_con<<m_connection->getDesc()
+ <<"WARNING: Not changing"
+ " existing peer id."<<std::endl);
+ }
+ else
+ {
+ LOG(dout_con<<m_connection->getDesc()<<"changing own peer id"<<std::endl);
+ m_connection->SetPeerID(peer_id_new);
+ }
+
+ ConnectionCommand cmd;
+
+ SharedBuffer<u8> reply(2);
+ writeU8(&reply[0], TYPE_CONTROL);
+ writeU8(&reply[1], CONTROLTYPE_ENABLE_BIG_SEND_WINDOW);
+ cmd.disableLegacy(PEER_ID_SERVER,reply);
+ m_connection->putCommand(cmd);
+
+ throw ProcessedSilentlyException("Got a SET_PEER_ID");
+ }
+ else if (controltype == CONTROLTYPE_PING)
+ {
+ // Just ignore it, the incoming data already reset
+ // the timeout counter
+ LOG(dout_con<<m_connection->getDesc()<<"PING"<<std::endl);
+ throw ProcessedSilentlyException("Got a PING");
+ }
+ else if (controltype == CONTROLTYPE_DISCO)
+ {
+ // Just ignore it, the incoming data already reset
+ // the timeout counter
+ LOG(dout_con<<m_connection->getDesc()
+ <<"DISCO: Removing peer "<<(peer_id)<<std::endl);
+
+ if (m_connection->deletePeer(peer_id, false) == false)
+ {
+ derr_con<<m_connection->getDesc()
+ <<"DISCO: Peer not found"<<std::endl;
+ }
+
+ throw ProcessedSilentlyException("Got a DISCO");
+ }
+ else if (controltype == CONTROLTYPE_ENABLE_BIG_SEND_WINDOW)
+ {
+ dynamic_cast<UDPPeer*>(&peer)->setNonLegacyPeer();
+ throw ProcessedSilentlyException("Got non legacy control");
+ }
+ else{
+ LOG(derr_con<<m_connection->getDesc()
+ <<"INVALID TYPE_CONTROL: invalid controltype="
+ <<((int)controltype&0xff)<<std::endl);
+ throw InvalidIncomingDataException("Invalid control type");
+ }
+ }
+ else if (type == TYPE_ORIGINAL)
+ {
+ if (packetdata.getSize() <= ORIGINAL_HEADER_SIZE)
+ throw InvalidIncomingDataException
+ ("packetdata.getSize() <= ORIGINAL_HEADER_SIZE");
+ LOG(dout_con<<m_connection->getDesc()
+ <<"RETURNING TYPE_ORIGINAL to user"
+ <<std::endl);
+ // Get the inside packet out and return it
+ SharedBuffer<u8> payload(packetdata.getSize() - ORIGINAL_HEADER_SIZE);
+ memcpy(*payload, &(packetdata[ORIGINAL_HEADER_SIZE]), payload.getSize());
+ return payload;
+ }
+ else if (type == TYPE_SPLIT)
+ {
+ Address peer_address;
+
+ if (peer->getAddress(MTP_UDP, peer_address)) {
+
+ // We have to create a packet again for buffering
+ // This isn't actually too bad an idea.
+ BufferedPacket packet = makePacket(
+ peer_address,
+ packetdata,
+ m_connection->GetProtocolID(),
+ peer_id,
+ channelnum);
+
+ // Buffer the packet
+ SharedBuffer<u8> data =
+ peer->addSpiltPacket(channelnum,packet,reliable);
+
+ if (data.getSize() != 0)
+ {
+ LOG(dout_con<<m_connection->getDesc()
+ <<"RETURNING TYPE_SPLIT: Constructed full data, "
+ <<"size="<<data.getSize()<<std::endl);
+ return data;
+ }
+ LOG(dout_con<<m_connection->getDesc()<<"BUFFERED TYPE_SPLIT"<<std::endl);
+ throw ProcessedSilentlyException("Buffered a split packet chunk");
+ }
+ else {
+ //TODO throw some error
+ }
+ }
+ else if (type == TYPE_RELIABLE)
+ {
+ assert(channel != NULL);
+
+ // Recursive reliable packets not allowed
+ if (reliable)
+ throw InvalidIncomingDataException("Found nested reliable packets");
+
+ if (packetdata.getSize() < RELIABLE_HEADER_SIZE)
+ throw InvalidIncomingDataException
+ ("packetdata.getSize() < RELIABLE_HEADER_SIZE");
+
+ u16 seqnum = readU16(&packetdata[1]);
+ bool is_future_packet = false;
+ bool is_old_packet = false;
+
+ /* packet is within our receive window send ack */
+ if (seqnum_in_window(seqnum, channel->readNextIncomingSeqNum(),MAX_RELIABLE_WINDOW_SIZE))
+ {
+ m_connection->sendAck(peer_id,channelnum,seqnum);
+ }
+ else {
+ is_future_packet = seqnum_higher(seqnum, channel->readNextIncomingSeqNum());
+ is_old_packet = seqnum_higher(channel->readNextIncomingSeqNum(), seqnum);
+
+
+ /* packet is not within receive window, don't send ack. *
+ * if this was a valid packet it's gonna be retransmitted */
+ if (is_future_packet)
+ {
+ throw ProcessedSilentlyException("Received packet newer then expected, not sending ack");
+ }
+
+ /* seems like our ack was lost, send another one for a old packet */
+ if (is_old_packet)
+ {
+ LOG(dout_con<<m_connection->getDesc()
+ << "RE-SENDING ACK: peer_id: " << peer_id
+ << ", channel: " << (channelnum&0xFF)
+ << ", seqnum: " << seqnum << std::endl;)
+ m_connection->sendAck(peer_id,channelnum,seqnum);
+
+ // we already have this packet so this one was on wire at least
+ // the current timeout
+ // we don't know how long this packet was on wire don't do silly guessing
+ // dynamic_cast<UDPPeer*>(&peer)->reportRTT(dynamic_cast<UDPPeer*>(&peer)->getResendTimeout());
+
+ throw ProcessedSilentlyException("Retransmitting ack for old packet");
+ }
+ }
+
+ if (seqnum != channel->readNextIncomingSeqNum())
+ {
+ Address peer_address;
+
+ // this is a reliable packet so we have a udp address for sure
+ peer->getAddress(MTP_MINETEST_RELIABLE_UDP, peer_address);
+ // This one comes later, buffer it.
+ // Actually we have to make a packet to buffer one.
+ // Well, we have all the ingredients, so just do it.
+ BufferedPacket packet = con::makePacket(
+ peer_address,
+ packetdata,
+ m_connection->GetProtocolID(),
+ peer_id,
+ channelnum);
+ try{
+ channel->incoming_reliables.insert(packet,channel->readNextIncomingSeqNum());
+
+ LOG(dout_con<<m_connection->getDesc()
+ << "BUFFERING, TYPE_RELIABLE peer_id: " << peer_id
+ << ", channel: " << (channelnum&0xFF)
+ << ", seqnum: " << seqnum << std::endl;)
+
+ throw ProcessedQueued("Buffered future reliable packet");
+ }
+ catch(AlreadyExistsException &e)
+ {
+ }
+ catch(IncomingDataCorruption &e)
+ {
+ ConnectionCommand discon;
+ discon.disconnect_peer(peer_id);
+ m_connection->putCommand(discon);
+
+ LOG(derr_con<<m_connection->getDesc()
+ << "INVALID, TYPE_RELIABLE peer_id: " << peer_id
+ << ", channel: " << (channelnum&0xFF)
+ << ", seqnum: " << seqnum
+ << "DROPPING CLIENT!" << std::endl;)
+ }
+ }
+
+ /* we got a packet to process right now */
+ LOG(dout_con<<m_connection->getDesc()
+ << "RECURSIVE, TYPE_RELIABLE peer_id: " << peer_id
+ << ", channel: " << (channelnum&0xFF)
+ << ", seqnum: " << seqnum << std::endl;)
+
+
+ /* check for resend case */
+ u16 queued_seqnum = 0;
+ if (channel->incoming_reliables.getFirstSeqnum(queued_seqnum))
+ {
+ if (queued_seqnum == seqnum)
+ {
+ BufferedPacket queued_packet = channel->incoming_reliables.popFirst();
+ /** TODO find a way to verify the new against the old packet */
+ }
+ }
+
+ channel->incNextIncomingSeqNum();
+
+ // Get out the inside packet and re-process it
+ SharedBuffer<u8> payload(packetdata.getSize() - RELIABLE_HEADER_SIZE);
+ memcpy(*payload, &packetdata[RELIABLE_HEADER_SIZE], payload.getSize());
+
+ return processPacket(channel, payload, peer_id, channelnum, true);
+ }
+ else
+ {
+ derr_con<<m_connection->getDesc()
+ <<"Got invalid type="<<((int)type&0xff)<<std::endl;
+ throw InvalidIncomingDataException("Invalid packet type");
+ }
+
+ // We should never get here.
+ FATAL_ERROR("Invalid execution point");
+}
+
+/*
+ Connection
+*/
+
+Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout,
+ bool ipv6, PeerHandler *peerhandler) :
+ m_udpSocket(ipv6),
+ m_command_queue(),
+ m_event_queue(),
+ m_peer_id(0),
+ m_protocol_id(protocol_id),
+ m_sendThread(max_packet_size, timeout),
+ m_receiveThread(max_packet_size),
+ m_info_mutex(),
+ m_bc_peerhandler(peerhandler),
+ m_bc_receive_timeout(0),
+ m_shutting_down(false),
+ m_next_remote_peer_id(2)
+
+{
+ m_udpSocket.setTimeoutMs(5);
+
+ m_sendThread.setParent(this);
+ m_receiveThread.setParent(this);
+
+ m_sendThread.Start();
+ m_receiveThread.Start();
+
+}
+
+
+Connection::~Connection()
+{
+ m_shutting_down = true;
+ // request threads to stop
+ m_sendThread.Stop();
+ m_receiveThread.Stop();
+
+ //TODO for some unkonwn reason send/receive threads do not exit as they're
+ // supposed to be but wait on peer timeout. To speed up shutdown we reduce
+ // timeout to half a second.
+ m_sendThread.setPeerTimeout(0.5);
+
+ // wait for threads to finish
+ m_sendThread.Wait();
+ m_receiveThread.Wait();
+
+ // Delete peers
+ for(std::map<u16, Peer*>::iterator
+ j = m_peers.begin();
+ j != m_peers.end(); ++j)
+ {
+ delete j->second;
+ }
+}
+
+/* Internal stuff */
+void Connection::putEvent(ConnectionEvent &e)
+{
+ assert(e.type != CONNEVENT_NONE); // Pre-condition
+ m_event_queue.push_back(e);
+}
+
+PeerHelper Connection::getPeer(u16 peer_id)
+{
+ JMutexAutoLock peerlock(m_peers_mutex);
+ std::map<u16, Peer*>::iterator node = m_peers.find(peer_id);
+
+ if (node == m_peers.end()) {
+ throw PeerNotFoundException("GetPeer: Peer not found (possible timeout)");
+ }
+
+ // Error checking
+ FATAL_ERROR_IF(node->second->id != peer_id, "Invalid peer id");
+
+ return PeerHelper(node->second);
+}
+
+PeerHelper Connection::getPeerNoEx(u16 peer_id)
+{
+ JMutexAutoLock peerlock(m_peers_mutex);
+ std::map<u16, Peer*>::iterator node = m_peers.find(peer_id);
+
+ if (node == m_peers.end()) {
+ return PeerHelper(NULL);
+ }
+
+ // Error checking
+ FATAL_ERROR_IF(node->second->id != peer_id, "Invalid peer id");
+
+ return PeerHelper(node->second);
+}
+
+/* find peer_id for address */
+u16 Connection::lookupPeer(Address& sender)
+{
+ JMutexAutoLock peerlock(m_peers_mutex);
+ std::map<u16, Peer*>::iterator j;
+ j = m_peers.begin();
+ for(; j != m_peers.end(); ++j)
+ {
+ Peer *peer = j->second;
+ if (peer->isActive())
+ continue;
+
+ Address tocheck;
+
+ if ((peer->getAddress(MTP_MINETEST_RELIABLE_UDP, tocheck)) && (tocheck == sender))
+ return peer->id;
+
+ if ((peer->getAddress(MTP_UDP, tocheck)) && (tocheck == sender))
+ return peer->id;
+ }
+
+ return PEER_ID_INEXISTENT;
+}
+
+std::list<Peer*> Connection::getPeers()
+{
+ std::list<Peer*> list;
+ for(std::map<u16, Peer*>::iterator j = m_peers.begin();
+ j != m_peers.end(); ++j)
+ {
+ Peer *peer = j->second;
+ list.push_back(peer);
+ }
+ return list;
+}
+
+bool Connection::deletePeer(u16 peer_id, bool timeout)
+{
+ Peer *peer = 0;
+
+ /* lock list as short as possible */
+ {
+ JMutexAutoLock peerlock(m_peers_mutex);
+ if (m_peers.find(peer_id) == m_peers.end())
+ return false;
+ peer = m_peers[peer_id];
+ m_peers.erase(peer_id);
+ m_peer_ids.remove(peer_id);
+ }
+
+ Address peer_address;
+ //any peer has a primary address this never fails!
+ peer->getAddress(MTP_PRIMARY, peer_address);
+ // Create event
+ ConnectionEvent e;
+ e.peerRemoved(peer_id, timeout, peer_address);
+ putEvent(e);
+
+
+ peer->Drop();
+ return true;
+}
+
+/* Interface */
+
+ConnectionEvent Connection::waitEvent(u32 timeout_ms)
+{
+ try {
+ return m_event_queue.pop_front(timeout_ms);
+ } catch(ItemNotFoundException &ex) {
+ ConnectionEvent e;
+ e.type = CONNEVENT_NONE;
+ return e;
+ }
+}
+
+void Connection::putCommand(ConnectionCommand &c)
+{
+ if (!m_shutting_down) {
+ m_command_queue.push_back(c);
+ m_sendThread.Trigger();
+ }
+}
+
+void Connection::Serve(Address bind_addr)
+{
+ ConnectionCommand c;
+ c.serve(bind_addr);
+ putCommand(c);
+}
+
+void Connection::Connect(Address address)
+{
+ ConnectionCommand c;
+ c.connect(address);
+ putCommand(c);
+}
+
+bool Connection::Connected()
+{
+ JMutexAutoLock peerlock(m_peers_mutex);
+
+ if (m_peers.size() != 1)
+ return false;
+
+ std::map<u16, Peer*>::iterator node = m_peers.find(PEER_ID_SERVER);
+ if (node == m_peers.end())
+ return false;
+
+ if (m_peer_id == PEER_ID_INEXISTENT)
+ return false;
+
+ return true;
+}
+
+void Connection::Disconnect()
+{
+ ConnectionCommand c;
+ c.disconnect();
+ putCommand(c);
+}
+
+void Connection::Receive(NetworkPacket* pkt)
+{
+ for(;;) {
+ ConnectionEvent e = waitEvent(m_bc_receive_timeout);
+ if (e.type != CONNEVENT_NONE)
+ LOG(dout_con << getDesc() << ": Receive: got event: "
+ << e.describe() << std::endl);
+ switch(e.type) {
+ case CONNEVENT_NONE:
+ throw NoIncomingDataException("No incoming data");
+ case CONNEVENT_DATA_RECEIVED:
+ // Data size is lesser than command size, ignoring packet
+ if (e.data.getSize() < 2) {
+ continue;
+ }
+
+ pkt->putRawPacket(*e.data, e.data.getSize(), e.peer_id);
+ return;
+ case CONNEVENT_PEER_ADDED: {
+ UDPPeer tmp(e.peer_id, e.address, this);
+ if (m_bc_peerhandler)
+ m_bc_peerhandler->peerAdded(&tmp);
+ continue;
+ }
+ case CONNEVENT_PEER_REMOVED: {
+ UDPPeer tmp(e.peer_id, e.address, this);
+ if (m_bc_peerhandler)
+ m_bc_peerhandler->deletingPeer(&tmp, e.timeout);
+ continue;
+ }
+ case CONNEVENT_BIND_FAILED:
+ throw ConnectionBindFailed("Failed to bind socket "
+ "(port already in use?)");
+ }
+ }
+ throw NoIncomingDataException("No incoming data");
+}
+
+void Connection::Send(u16 peer_id, u8 channelnum,
+ NetworkPacket* pkt, bool reliable)
+{
+ assert(channelnum < CHANNEL_COUNT); // Pre-condition
+
+ ConnectionCommand c;
+
+ c.send(peer_id, channelnum, pkt, reliable);
+ putCommand(c);
+}
+
+Address Connection::GetPeerAddress(u16 peer_id)
+{
+ PeerHelper peer = getPeerNoEx(peer_id);
+
+ if (!peer)
+ throw PeerNotFoundException("No address for peer found!");
+ Address peer_address;
+ peer->getAddress(MTP_PRIMARY, peer_address);
+ return peer_address;
+}
+
+float Connection::getPeerStat(u16 peer_id, rtt_stat_type type)
+{
+ PeerHelper peer = getPeerNoEx(peer_id);
+ if (!peer) return -1;
+ return peer->getStat(type);
+}
+
+float Connection::getLocalStat(rate_stat_type type)
+{
+ PeerHelper peer = getPeerNoEx(PEER_ID_SERVER);
+
+ FATAL_ERROR_IF(!peer, "Connection::getLocalStat we couldn't get our own peer? are you serious???");
+
+ float retval = 0.0;
+
+ for (u16 j=0; j<CHANNEL_COUNT; j++) {
+ switch(type) {
+ case CUR_DL_RATE:
+ retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getCurrentDownloadRateKB();
+ break;
+ case AVG_DL_RATE:
+ retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getAvgDownloadRateKB();
+ break;
+ case CUR_INC_RATE:
+ retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getCurrentIncomingRateKB();
+ break;
+ case AVG_INC_RATE:
+ retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getAvgIncomingRateKB();
+ break;
+ case AVG_LOSS_RATE:
+ retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getAvgLossRateKB();
+ break;
+ case CUR_LOSS_RATE:
+ retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getCurrentLossRateKB();
+ break;
+ default:
+ FATAL_ERROR("Connection::getLocalStat Invalid stat type");
+ }
+ }
+ return retval;
+}
+
+u16 Connection::createPeer(Address& sender, MTProtocols protocol, int fd)
+{
+ // Somebody wants to make a new connection
+
+ // Get a unique peer id (2 or higher)
+ u16 peer_id_new = m_next_remote_peer_id;
+ u16 overflow = MAX_UDP_PEERS;
+
+ /*
+ Find an unused peer id
+ */
+ JMutexAutoLock lock(m_peers_mutex);
+ bool out_of_ids = false;
+ for(;;) {
+ // Check if exists
+ if (m_peers.find(peer_id_new) == m_peers.end())
+
+ break;
+ // Check for overflow
+ if (peer_id_new == overflow) {
+ out_of_ids = true;
+ break;
+ }
+ peer_id_new++;
+ }
+
+ if (out_of_ids) {
+ errorstream << getDesc() << " ran out of peer ids" << std::endl;
+ return PEER_ID_INEXISTENT;
+ }
+
+ // Create a peer
+ Peer *peer = 0;
+ peer = new UDPPeer(peer_id_new, sender, this);
+
+ m_peers[peer->id] = peer;
+ m_peer_ids.push_back(peer->id);
+
+ m_next_remote_peer_id = (peer_id_new +1 ) % MAX_UDP_PEERS;
+
+ LOG(dout_con << getDesc()
+ << "createPeer(): giving peer_id=" << peer_id_new << std::endl);
+
+ ConnectionCommand cmd;
+ SharedBuffer<u8> reply(4);
+ writeU8(&reply[0], TYPE_CONTROL);
+ writeU8(&reply[1], CONTROLTYPE_SET_PEER_ID);
+ writeU16(&reply[2], peer_id_new);
+ cmd.createPeer(peer_id_new,reply);
+ putCommand(cmd);
+
+ // Create peer addition event
+ ConnectionEvent e;
+ e.peerAdded(peer_id_new, sender);
+ putEvent(e);
+
+ // We're now talking to a valid peer_id
+ return peer_id_new;
+}
+
+void Connection::PrintInfo(std::ostream &out)
+{
+ m_info_mutex.Lock();
+ out<<getDesc()<<": ";
+ m_info_mutex.Unlock();
+}
+
+void Connection::PrintInfo()
+{
+ PrintInfo(dout_con);
+}
+
+const std::string Connection::getDesc()
+{
+ return std::string("con(")+
+ itos(m_udpSocket.GetHandle())+"/"+itos(m_peer_id)+")";
+}
+
+void Connection::DisconnectPeer(u16 peer_id)
+{
+ ConnectionCommand discon;
+ discon.disconnect_peer(peer_id);
+ putCommand(discon);
+}
+
+void Connection::sendAck(u16 peer_id, u8 channelnum, u16 seqnum)
+{
+ assert(channelnum < CHANNEL_COUNT); // Pre-condition
+
+ LOG(dout_con<<getDesc()
+ <<" Queuing ACK command to peer_id: " << peer_id <<
+ " channel: " << (channelnum & 0xFF) <<
+ " seqnum: " << seqnum << std::endl);
+
+ ConnectionCommand c;
+ SharedBuffer<u8> ack(4);
+ writeU8(&ack[0], TYPE_CONTROL);
+ writeU8(&ack[1], CONTROLTYPE_ACK);
+ writeU16(&ack[2], seqnum);
+
+ c.ack(peer_id, channelnum, ack);
+ putCommand(c);
+ m_sendThread.Trigger();
+}
+
+UDPPeer* Connection::createServerPeer(Address& address)
+{
+ if (getPeerNoEx(PEER_ID_SERVER) != 0)
+ {
+ throw ConnectionException("Already connected to a server");
+ }
+
+ UDPPeer *peer = new UDPPeer(PEER_ID_SERVER, address, this);
+
+ {
+ JMutexAutoLock lock(m_peers_mutex);
+ m_peers[peer->id] = peer;
+ m_peer_ids.push_back(peer->id);
+ }
+
+ return peer;
+}
+
+} // namespace
diff --git a/src/network/connection.h b/src/network/connection.h
new file mode 100644
index 000000000..15ea7e20f
--- /dev/null
+++ b/src/network/connection.h
@@ -0,0 +1,1096 @@
+/*
+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.
+*/
+
+#ifndef CONNECTION_HEADER
+#define CONNECTION_HEADER
+
+#include "irrlichttypes_bloated.h"
+#include "socket.h"
+#include "exceptions.h"
+#include "constants.h"
+#include "network/networkpacket.h"
+#include "util/pointer.h"
+#include "util/container.h"
+#include "util/thread.h"
+#include "util/numeric.h"
+#include <iostream>
+#include <fstream>
+#include <list>
+#include <map>
+
+class NetworkPacket;
+
+namespace con
+{
+
+/*
+ Exceptions
+*/
+class NotFoundException : public BaseException
+{
+public:
+ NotFoundException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class PeerNotFoundException : public BaseException
+{
+public:
+ PeerNotFoundException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class ConnectionException : public BaseException
+{
+public:
+ ConnectionException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class ConnectionBindFailed : public BaseException
+{
+public:
+ ConnectionBindFailed(const char *s):
+ BaseException(s)
+ {}
+};
+
+class InvalidIncomingDataException : public BaseException
+{
+public:
+ InvalidIncomingDataException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class InvalidOutgoingDataException : public BaseException
+{
+public:
+ InvalidOutgoingDataException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class NoIncomingDataException : public BaseException
+{
+public:
+ NoIncomingDataException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class ProcessedSilentlyException : public BaseException
+{
+public:
+ ProcessedSilentlyException(const char *s):
+ BaseException(s)
+ {}
+};
+
+class ProcessedQueued : public BaseException
+{
+public:
+ ProcessedQueued(const char *s):
+ BaseException(s)
+ {}
+};
+
+class IncomingDataCorruption : public BaseException
+{
+public:
+ IncomingDataCorruption(const char *s):
+ BaseException(s)
+ {}
+};
+
+typedef enum MTProtocols {
+ MTP_PRIMARY,
+ MTP_UDP,
+ MTP_MINETEST_RELIABLE_UDP
+} MTProtocols;
+
+#define SEQNUM_MAX 65535
+inline bool seqnum_higher(u16 totest, u16 base)
+{
+ if (totest > base)
+ {
+ if ((totest - base) > (SEQNUM_MAX/2))
+ return false;
+ else
+ return true;
+ }
+ else
+ {
+ if ((base - totest) > (SEQNUM_MAX/2))
+ return true;
+ else
+ return false;
+ }
+}
+
+inline bool seqnum_in_window(u16 seqnum, u16 next,u16 window_size)
+{
+ u16 window_start = next;
+ u16 window_end = ( next + window_size ) % (SEQNUM_MAX+1);
+
+ if (window_start < window_end)
+ {
+ return ((seqnum >= window_start) && (seqnum < window_end));
+ }
+ else
+ {
+ return ((seqnum < window_end) || (seqnum >= window_start));
+ }
+}
+
+struct BufferedPacket
+{
+ BufferedPacket(u8 *a_data, u32 a_size):
+ data(a_data, a_size), time(0.0), totaltime(0.0), absolute_send_time(-1),
+ resend_count(0)
+ {}
+ BufferedPacket(u32 a_size):
+ data(a_size), time(0.0), totaltime(0.0), absolute_send_time(-1),
+ resend_count(0)
+ {}
+ Buffer<u8> data; // Data of the packet, including headers
+ float time; // Seconds from buffering the packet or re-sending
+ float totaltime; // Seconds from buffering the packet
+ unsigned int absolute_send_time;
+ Address address; // Sender or destination
+ unsigned int resend_count;
+};
+
+// This adds the base headers to the data and makes a packet out of it
+BufferedPacket makePacket(Address &address, u8 *data, u32 datasize,
+ u32 protocol_id, u16 sender_peer_id, u8 channel);
+BufferedPacket makePacket(Address &address, SharedBuffer<u8> &data,
+ u32 protocol_id, u16 sender_peer_id, u8 channel);
+
+// Add the TYPE_ORIGINAL header to the data
+SharedBuffer<u8> makeOriginalPacket(
+ SharedBuffer<u8> data);
+
+// Split data in chunks and add TYPE_SPLIT headers to them
+std::list<SharedBuffer<u8> > makeSplitPacket(
+ SharedBuffer<u8> data,
+ u32 chunksize_max,
+ u16 seqnum);
+
+// Depending on size, make a TYPE_ORIGINAL or TYPE_SPLIT packet
+// Increments split_seqnum if a split packet is made
+std::list<SharedBuffer<u8> > makeAutoSplitPacket(
+ SharedBuffer<u8> data,
+ u32 chunksize_max,
+ u16 &split_seqnum);
+
+// Add the TYPE_RELIABLE header to the data
+SharedBuffer<u8> makeReliablePacket(
+ SharedBuffer<u8> data,
+ u16 seqnum);
+
+struct IncomingSplitPacket
+{
+ IncomingSplitPacket()
+ {
+ time = 0.0;
+ reliable = false;
+ }
+ // Key is chunk number, value is data without headers
+ std::map<u16, SharedBuffer<u8> > chunks;
+ u32 chunk_count;
+ float time; // Seconds from adding
+ bool reliable; // If true, isn't deleted on timeout
+
+ bool allReceived()
+ {
+ return (chunks.size() == chunk_count);
+ }
+};
+
+/*
+=== NOTES ===
+
+A packet is sent through a channel to a peer with a basic header:
+TODO: Should we have a receiver_peer_id also?
+ Header (7 bytes):
+ [0] u32 protocol_id
+ [4] u16 sender_peer_id
+ [6] u8 channel
+sender_peer_id:
+ Unique to each peer.
+ value 0 (PEER_ID_INEXISTENT) is reserved for making new connections
+ value 1 (PEER_ID_SERVER) is reserved for server
+ these constants are defined in constants.h
+channel:
+ The lower the number, the higher the priority is.
+ Only channels 0, 1 and 2 exist.
+*/
+#define BASE_HEADER_SIZE 7
+#define CHANNEL_COUNT 3
+/*
+Packet types:
+
+CONTROL: This is a packet used by the protocol.
+- When this is processed, nothing is handed to the user.
+ Header (2 byte):
+ [0] u8 type
+ [1] u8 controltype
+controltype and data description:
+ CONTROLTYPE_ACK
+ [2] u16 seqnum
+ CONTROLTYPE_SET_PEER_ID
+ [2] u16 peer_id_new
+ CONTROLTYPE_PING
+ - There is no actual reply, but this can be sent in a reliable
+ packet to get a reply
+ CONTROLTYPE_DISCO
+*/
+#define TYPE_CONTROL 0
+#define CONTROLTYPE_ACK 0
+#define CONTROLTYPE_SET_PEER_ID 1
+#define CONTROLTYPE_PING 2
+#define CONTROLTYPE_DISCO 3
+#define CONTROLTYPE_ENABLE_BIG_SEND_WINDOW 4
+
+/*
+ORIGINAL: This is a plain packet with no control and no error
+checking at all.
+- When this is processed, it is directly handed to the user.
+ Header (1 byte):
+ [0] u8 type
+*/
+#define TYPE_ORIGINAL 1
+#define ORIGINAL_HEADER_SIZE 1
+/*
+SPLIT: These are sequences of packets forming one bigger piece of
+data.
+- When processed and all the packet_nums 0...packet_count-1 are
+ present (this should be buffered), the resulting data shall be
+ directly handed to the user.
+- If the data fails to come up in a reasonable time, the buffer shall
+ be silently discarded.
+- These can be sent as-is or atop of a RELIABLE packet stream.
+ Header (7 bytes):
+ [0] u8 type
+ [1] u16 seqnum
+ [3] u16 chunk_count
+ [5] u16 chunk_num
+*/
+#define TYPE_SPLIT 2
+/*
+RELIABLE: Delivery of all RELIABLE packets shall be forced by ACKs,
+and they shall be delivered in the same order as sent. This is done
+with a buffer in the receiving and transmitting end.
+- When this is processed, the contents of each packet is recursively
+ processed as packets.
+ Header (3 bytes):
+ [0] u8 type
+ [1] u16 seqnum
+
+*/
+#define TYPE_RELIABLE 3
+#define RELIABLE_HEADER_SIZE 3
+#define SEQNUM_INITIAL 65500
+
+/*
+ A buffer which stores reliable packets and sorts them internally
+ for fast access to the smallest one.
+*/
+
+typedef std::list<BufferedPacket>::iterator RPBSearchResult;
+
+class ReliablePacketBuffer
+{
+public:
+ ReliablePacketBuffer();
+
+ bool getFirstSeqnum(u16& result);
+
+ BufferedPacket popFirst();
+ BufferedPacket popSeqnum(u16 seqnum);
+ void insert(BufferedPacket &p,u16 next_expected);
+
+ void incrementTimeouts(float dtime);
+ std::list<BufferedPacket> getTimedOuts(float timeout,
+ unsigned int max_packets);
+
+ void print();
+ bool empty();
+ bool containsPacket(u16 seqnum);
+ RPBSearchResult notFound();
+ u32 size();
+
+
+private:
+ RPBSearchResult findPacket(u16 seqnum);
+
+ std::list<BufferedPacket> m_list;
+ u32 m_list_size;
+
+ u16 m_oldest_non_answered_ack;
+
+ JMutex m_list_mutex;
+};
+
+/*
+ A buffer for reconstructing split packets
+*/
+
+class IncomingSplitBuffer
+{
+public:
+ ~IncomingSplitBuffer();
+ /*
+ Returns a reference counted buffer of length != 0 when a full split
+ packet is constructed. If not, returns one of length 0.
+ */
+ SharedBuffer<u8> insert(BufferedPacket &p, bool reliable);
+
+ void removeUnreliableTimedOuts(float dtime, float timeout);
+
+private:
+ // Key is seqnum
+ std::map<u16, IncomingSplitPacket*> m_buf;
+
+ JMutex m_map_mutex;
+};
+
+struct OutgoingPacket
+{
+ u16 peer_id;
+ u8 channelnum;
+ SharedBuffer<u8> data;
+ bool reliable;
+ bool ack;
+
+ OutgoingPacket(u16 peer_id_, u8 channelnum_, SharedBuffer<u8> data_,
+ bool reliable_,bool ack_=false):
+ peer_id(peer_id_),
+ channelnum(channelnum_),
+ data(data_),
+ reliable(reliable_),
+ ack(ack_)
+ {
+ }
+};
+
+enum ConnectionCommandType{
+ CONNCMD_NONE,
+ CONNCMD_SERVE,
+ CONNCMD_CONNECT,
+ CONNCMD_DISCONNECT,
+ CONNCMD_DISCONNECT_PEER,
+ CONNCMD_SEND,
+ CONNCMD_SEND_TO_ALL,
+ CONCMD_ACK,
+ CONCMD_CREATE_PEER,
+ CONCMD_DISABLE_LEGACY
+};
+
+struct ConnectionCommand
+{
+ enum ConnectionCommandType type;
+ Address address;
+ u16 peer_id;
+ u8 channelnum;
+ Buffer<u8> data;
+ bool reliable;
+ bool raw;
+
+ ConnectionCommand(): type(CONNCMD_NONE), peer_id(PEER_ID_INEXISTENT), reliable(false), raw(false) {}
+
+ void serve(Address address_)
+ {
+ type = CONNCMD_SERVE;
+ address = address_;
+ }
+ void connect(Address address_)
+ {
+ type = CONNCMD_CONNECT;
+ address = address_;
+ }
+ void disconnect()
+ {
+ type = CONNCMD_DISCONNECT;
+ }
+ void disconnect_peer(u16 peer_id_)
+ {
+ type = CONNCMD_DISCONNECT_PEER;
+ peer_id = peer_id_;
+ }
+ void send(u16 peer_id_, u8 channelnum_,
+ NetworkPacket* pkt, bool reliable_)
+ {
+ type = CONNCMD_SEND;
+ peer_id = peer_id_;
+ channelnum = channelnum_;
+ data = pkt->oldForgePacket();
+ reliable = reliable_;
+ }
+
+ void ack(u16 peer_id_, u8 channelnum_, SharedBuffer<u8> data_)
+ {
+ type = CONCMD_ACK;
+ peer_id = peer_id_;
+ channelnum = channelnum_;
+ data = data_;
+ reliable = false;
+ }
+
+ void createPeer(u16 peer_id_, SharedBuffer<u8> data_)
+ {
+ type = CONCMD_CREATE_PEER;
+ peer_id = peer_id_;
+ data = data_;
+ channelnum = 0;
+ reliable = true;
+ raw = true;
+ }
+
+ void disableLegacy(u16 peer_id_, SharedBuffer<u8> data_)
+ {
+ type = CONCMD_DISABLE_LEGACY;
+ peer_id = peer_id_;
+ data = data_;
+ channelnum = 0;
+ reliable = true;
+ raw = true;
+ }
+};
+
+class Channel
+{
+
+public:
+ u16 readNextIncomingSeqNum();
+ u16 incNextIncomingSeqNum();
+
+ u16 getOutgoingSequenceNumber(bool& successfull);
+ u16 readOutgoingSequenceNumber();
+ bool putBackSequenceNumber(u16);
+
+ u16 readNextSplitSeqNum();
+ void setNextSplitSeqNum(u16 seqnum);
+
+ // This is for buffering the incoming packets that are coming in
+ // the wrong order
+ ReliablePacketBuffer incoming_reliables;
+ // This is for buffering the sent packets so that the sender can
+ // re-send them if no ACK is received
+ ReliablePacketBuffer outgoing_reliables_sent;
+
+ //queued reliable packets
+ std::queue<BufferedPacket> queued_reliables;
+
+ //queue commands prior splitting to packets
+ std::deque<ConnectionCommand> queued_commands;
+
+ IncomingSplitBuffer incoming_splits;
+
+ Channel();
+ ~Channel();
+
+ void UpdatePacketLossCounter(unsigned int count);
+ void UpdatePacketTooLateCounter();
+ void UpdateBytesSent(unsigned int bytes,unsigned int packages=1);
+ void UpdateBytesLost(unsigned int bytes);
+ void UpdateBytesReceived(unsigned int bytes);
+
+ void UpdateTimers(float dtime, bool legacy_peer);
+
+ const float getCurrentDownloadRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return cur_kbps; };
+ const float getMaxDownloadRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return max_kbps; };
+
+ const float getCurrentLossRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return cur_kbps_lost; };
+ const float getMaxLossRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return max_kbps_lost; };
+
+ const float getCurrentIncomingRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return cur_incoming_kbps; };
+ const float getMaxIncomingRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return max_incoming_kbps; };
+
+ const float getAvgDownloadRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return avg_kbps; };
+ const float getAvgLossRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return avg_kbps_lost; };
+ const float getAvgIncomingRateKB()
+ { JMutexAutoLock lock(m_internal_mutex); return avg_incoming_kbps; };
+
+ const unsigned int getWindowSize() const { return window_size; };
+
+ void setWindowSize(unsigned int size) { window_size = size; };
+private:
+ JMutex m_internal_mutex;
+ int window_size;
+
+ u16 next_incoming_seqnum;
+
+ u16 next_outgoing_seqnum;
+ u16 next_outgoing_split_seqnum;
+
+ unsigned int current_packet_loss;
+ unsigned int current_packet_too_late;
+ unsigned int current_packet_successfull;
+ float packet_loss_counter;
+
+ unsigned int current_bytes_transfered;
+ unsigned int current_bytes_received;
+ unsigned int current_bytes_lost;
+ float max_kbps;
+ float cur_kbps;
+ float avg_kbps;
+ float max_incoming_kbps;
+ float cur_incoming_kbps;
+ float avg_incoming_kbps;
+ float max_kbps_lost;
+ float cur_kbps_lost;
+ float avg_kbps_lost;
+ float bpm_counter;
+
+ unsigned int rate_samples;
+};
+
+class Peer;
+
+enum PeerChangeType
+{
+ PEER_ADDED,
+ PEER_REMOVED
+};
+struct PeerChange
+{
+ PeerChangeType type;
+ u16 peer_id;
+ bool timeout;
+};
+
+class PeerHandler
+{
+public:
+
+ PeerHandler()
+ {
+ }
+ virtual ~PeerHandler()
+ {
+ }
+
+ /*
+ This is called after the Peer has been inserted into the
+ Connection's peer container.
+ */
+ virtual void peerAdded(Peer *peer) = 0;
+ /*
+ This is called before the Peer has been removed from the
+ Connection's peer container.
+ */
+ virtual void deletingPeer(Peer *peer, bool timeout) = 0;
+};
+
+class PeerHelper
+{
+public:
+ PeerHelper();
+ PeerHelper(Peer* peer);
+ ~PeerHelper();
+
+ PeerHelper& operator=(Peer* peer);
+ Peer* operator->() const;
+ bool operator!();
+ Peer* operator&() const;
+ bool operator!=(void* ptr);
+
+private:
+ Peer* m_peer;
+};
+
+class Connection;
+
+typedef enum {
+ MIN_RTT,
+ MAX_RTT,
+ AVG_RTT,
+ MIN_JITTER,
+ MAX_JITTER,
+ AVG_JITTER
+} rtt_stat_type;
+
+typedef enum {
+ CUR_DL_RATE,
+ AVG_DL_RATE,
+ CUR_INC_RATE,
+ AVG_INC_RATE,
+ CUR_LOSS_RATE,
+ AVG_LOSS_RATE,
+} rate_stat_type;
+
+class Peer {
+ public:
+ friend class PeerHelper;
+
+ Peer(Address address_,u16 id_,Connection* connection) :
+ id(id_),
+ m_increment_packets_remaining(9),
+ m_increment_bytes_remaining(0),
+ m_pending_deletion(false),
+ m_connection(connection),
+ address(address_),
+ m_ping_timer(0.0),
+ m_last_rtt(-1.0),
+ m_usage(0),
+ m_timeout_counter(0.0),
+ m_last_timeout_check(porting::getTimeMs()),
+ m_has_sent_with_id(false)
+ {
+ m_rtt.avg_rtt = -1.0;
+ m_rtt.jitter_avg = -1.0;
+ m_rtt.jitter_max = 0.0;
+ m_rtt.max_rtt = 0.0;
+ m_rtt.jitter_min = FLT_MAX;
+ m_rtt.min_rtt = FLT_MAX;
+ };
+
+ virtual ~Peer() {
+ JMutexAutoLock usage_lock(m_exclusive_access_mutex);
+ FATAL_ERROR_IF(m_usage != 0, "Reference counting failure");
+ };
+
+ // Unique id of the peer
+ u16 id;
+
+ void Drop();
+
+ virtual void PutReliableSendCommand(ConnectionCommand &c,
+ unsigned int max_packet_size) {};
+
+ virtual bool isActive() { return false; };
+
+ virtual bool getAddress(MTProtocols type, Address& toset) = 0;
+
+ void ResetTimeout()
+ {JMutexAutoLock lock(m_exclusive_access_mutex); m_timeout_counter=0.0; };
+
+ bool isTimedOut(float timeout);
+
+ void setSentWithID()
+ { JMutexAutoLock lock(m_exclusive_access_mutex); m_has_sent_with_id = true; };
+
+ bool hasSentWithID()
+ { JMutexAutoLock lock(m_exclusive_access_mutex); return m_has_sent_with_id; };
+
+ unsigned int m_increment_packets_remaining;
+ unsigned int m_increment_bytes_remaining;
+
+ virtual u16 getNextSplitSequenceNumber(u8 channel) { return 0; };
+ virtual void setNextSplitSequenceNumber(u8 channel, u16 seqnum) {};
+ virtual SharedBuffer<u8> addSpiltPacket(u8 channel,
+ BufferedPacket toadd,
+ bool reliable)
+ {
+ fprintf(stderr,"Peer: addSplitPacket called, this is supposed to be never called!\n");
+ return SharedBuffer<u8>(0);
+ };
+
+ virtual bool Ping(float dtime, SharedBuffer<u8>& data) { return false; };
+
+ virtual float getStat(rtt_stat_type type) const {
+ switch (type) {
+ case MIN_RTT:
+ return m_rtt.min_rtt;
+ case MAX_RTT:
+ return m_rtt.max_rtt;
+ case AVG_RTT:
+ return m_rtt.avg_rtt;
+ case MIN_JITTER:
+ return m_rtt.jitter_min;
+ case MAX_JITTER:
+ return m_rtt.jitter_max;
+ case AVG_JITTER:
+ return m_rtt.jitter_avg;
+ }
+ return -1;
+ }
+ protected:
+ virtual void reportRTT(float rtt) {};
+
+ void RTTStatistics(float rtt,
+ std::string profiler_id="",
+ unsigned int num_samples=1000);
+
+ bool IncUseCount();
+ void DecUseCount();
+
+ JMutex m_exclusive_access_mutex;
+
+ bool m_pending_deletion;
+
+ Connection* m_connection;
+
+ // Address of the peer
+ Address address;
+
+ // Ping timer
+ float m_ping_timer;
+ private:
+
+ struct rttstats {
+ float jitter_min;
+ float jitter_max;
+ float jitter_avg;
+ float min_rtt;
+ float max_rtt;
+ float avg_rtt;
+ };
+
+ rttstats m_rtt;
+ float m_last_rtt;
+
+ // current usage count
+ unsigned int m_usage;
+
+ // Seconds from last receive
+ float m_timeout_counter;
+
+ u32 m_last_timeout_check;
+
+ bool m_has_sent_with_id;
+};
+
+class UDPPeer : public Peer
+{
+public:
+
+ friend class PeerHelper;
+ friend class ConnectionReceiveThread;
+ friend class ConnectionSendThread;
+ friend class Connection;
+
+ UDPPeer(u16 a_id, Address a_address, Connection* connection);
+ virtual ~UDPPeer() {};
+
+ void PutReliableSendCommand(ConnectionCommand &c,
+ unsigned int max_packet_size);
+
+ bool isActive()
+ { return ((hasSentWithID()) && (!m_pending_deletion)); };
+
+ bool getAddress(MTProtocols type, Address& toset);
+
+ void setNonLegacyPeer();
+
+ bool getLegacyPeer()
+ { return m_legacy_peer; }
+
+ u16 getNextSplitSequenceNumber(u8 channel);
+ void setNextSplitSequenceNumber(u8 channel, u16 seqnum);
+
+ SharedBuffer<u8> addSpiltPacket(u8 channel,
+ BufferedPacket toadd,
+ bool reliable);
+
+
+protected:
+ /*
+ Calculates avg_rtt and resend_timeout.
+ rtt=-1 only recalculates resend_timeout
+ */
+ void reportRTT(float rtt);
+
+ void RunCommandQueues(
+ unsigned int max_packet_size,
+ unsigned int maxcommands,
+ unsigned int maxtransfer);
+
+ float getResendTimeout()
+ { JMutexAutoLock lock(m_exclusive_access_mutex); return resend_timeout; }
+
+ void setResendTimeout(float timeout)
+ { JMutexAutoLock lock(m_exclusive_access_mutex); resend_timeout = timeout; }
+ bool Ping(float dtime,SharedBuffer<u8>& data);
+
+ Channel channels[CHANNEL_COUNT];
+ bool m_pending_disconnect;
+private:
+ // This is changed dynamically
+ float resend_timeout;
+
+ bool processReliableSendCommand(
+ ConnectionCommand &c,
+ unsigned int max_packet_size);
+
+ bool m_legacy_peer;
+};
+
+/*
+ Connection
+*/
+
+enum ConnectionEventType{
+ CONNEVENT_NONE,
+ CONNEVENT_DATA_RECEIVED,
+ CONNEVENT_PEER_ADDED,
+ CONNEVENT_PEER_REMOVED,
+ CONNEVENT_BIND_FAILED,
+};
+
+struct ConnectionEvent
+{
+ enum ConnectionEventType type;
+ u16 peer_id;
+ Buffer<u8> data;
+ bool timeout;
+ Address address;
+
+ ConnectionEvent(): type(CONNEVENT_NONE), peer_id(0),
+ timeout(false) {}
+
+ std::string describe()
+ {
+ switch(type) {
+ case CONNEVENT_NONE:
+ return "CONNEVENT_NONE";
+ case CONNEVENT_DATA_RECEIVED:
+ return "CONNEVENT_DATA_RECEIVED";
+ case CONNEVENT_PEER_ADDED:
+ return "CONNEVENT_PEER_ADDED";
+ case CONNEVENT_PEER_REMOVED:
+ return "CONNEVENT_PEER_REMOVED";
+ case CONNEVENT_BIND_FAILED:
+ return "CONNEVENT_BIND_FAILED";
+ }
+ return "Invalid ConnectionEvent";
+ }
+
+ void dataReceived(u16 peer_id_, SharedBuffer<u8> data_)
+ {
+ type = CONNEVENT_DATA_RECEIVED;
+ peer_id = peer_id_;
+ data = data_;
+ }
+ void peerAdded(u16 peer_id_, Address address_)
+ {
+ type = CONNEVENT_PEER_ADDED;
+ peer_id = peer_id_;
+ address = address_;
+ }
+ void peerRemoved(u16 peer_id_, bool timeout_, Address address_)
+ {
+ type = CONNEVENT_PEER_REMOVED;
+ peer_id = peer_id_;
+ timeout = timeout_;
+ address = address_;
+ }
+ void bindFailed()
+ {
+ type = CONNEVENT_BIND_FAILED;
+ }
+};
+
+class ConnectionSendThread : public JThread {
+
+public:
+ friend class UDPPeer;
+
+ ConnectionSendThread(unsigned int max_packet_size, float timeout);
+
+ void * Thread ();
+
+ void Trigger();
+
+ void setParent(Connection* parent) {
+ assert(parent != NULL); // Pre-condition
+ m_connection = parent;
+ }
+
+ void setPeerTimeout(float peer_timeout)
+ { m_timeout = peer_timeout; }
+
+private:
+ void runTimeouts (float dtime);
+ void rawSend (const BufferedPacket &packet);
+ bool rawSendAsPacket(u16 peer_id, u8 channelnum,
+ SharedBuffer<u8> data, bool reliable);
+
+ void processReliableCommand (ConnectionCommand &c);
+ void processNonReliableCommand (ConnectionCommand &c);
+ void serve (Address bind_address);
+ void connect (Address address);
+ void disconnect ();
+ void disconnect_peer(u16 peer_id);
+ void send (u16 peer_id, u8 channelnum,
+ SharedBuffer<u8> data);
+ void sendReliable (ConnectionCommand &c);
+ void sendToAll (u8 channelnum,
+ SharedBuffer<u8> data);
+ void sendToAllReliable(ConnectionCommand &c);
+
+ void sendPackets (float dtime);
+
+ void sendAsPacket (u16 peer_id, u8 channelnum,
+ SharedBuffer<u8> data,bool ack=false);
+
+ void sendAsPacketReliable(BufferedPacket& p, Channel* channel);
+
+ bool packetsQueued();
+
+ Connection* m_connection;
+ unsigned int m_max_packet_size;
+ float m_timeout;
+ std::queue<OutgoingPacket> m_outgoing_queue;
+ JSemaphore m_send_sleep_semaphore;
+
+ unsigned int m_iteration_packets_avaialble;
+ unsigned int m_max_commands_per_iteration;
+ unsigned int m_max_data_packets_per_iteration;
+ unsigned int m_max_packets_requeued;
+};
+
+class ConnectionReceiveThread : public JThread {
+public:
+ ConnectionReceiveThread(unsigned int max_packet_size);
+
+ void * Thread ();
+
+ void setParent(Connection* parent) {
+ assert(parent != NULL); // Pre-condition
+ m_connection = parent;
+ }
+
+private:
+ void receive ();
+
+ // Returns next data from a buffer if possible
+ // If found, returns true; if not, false.
+ // If found, sets peer_id and dst
+ bool getFromBuffers (u16 &peer_id, SharedBuffer<u8> &dst);
+
+ bool checkIncomingBuffers(Channel *channel, u16 &peer_id,
+ SharedBuffer<u8> &dst);
+
+ /*
+ Processes a packet with the basic header stripped out.
+ Parameters:
+ packetdata: Data in packet (with no base headers)
+ peer_id: peer id of the sender of the packet in question
+ channelnum: channel on which the packet was sent
+ reliable: true if recursing into a reliable packet
+ */
+ SharedBuffer<u8> processPacket(Channel *channel,
+ SharedBuffer<u8> packetdata, u16 peer_id,
+ u8 channelnum, bool reliable);
+
+
+ Connection* m_connection;
+};
+
+class Connection
+{
+public:
+ friend class ConnectionSendThread;
+ friend class ConnectionReceiveThread;
+
+ Connection(u32 protocol_id, u32 max_packet_size, float timeout, bool ipv6,
+ PeerHandler *peerhandler);
+ ~Connection();
+
+ /* Interface */
+ ConnectionEvent waitEvent(u32 timeout_ms);
+ void putCommand(ConnectionCommand &c);
+
+ void SetTimeoutMs(int timeout) { m_bc_receive_timeout = timeout; }
+ void Serve(Address bind_addr);
+ void Connect(Address address);
+ bool Connected();
+ void Disconnect();
+ void Receive(NetworkPacket* pkt);
+ void Send(u16 peer_id, u8 channelnum, NetworkPacket* pkt, bool reliable);
+ u16 GetPeerID() { return m_peer_id; }
+ Address GetPeerAddress(u16 peer_id);
+ float getPeerStat(u16 peer_id, rtt_stat_type type);
+ float getLocalStat(rate_stat_type type);
+ const u32 GetProtocolID() const { return m_protocol_id; };
+ const std::string getDesc();
+ void DisconnectPeer(u16 peer_id);
+
+protected:
+ PeerHelper getPeer(u16 peer_id);
+ PeerHelper getPeerNoEx(u16 peer_id);
+ u16 lookupPeer(Address& sender);
+
+ u16 createPeer(Address& sender, MTProtocols protocol, int fd);
+ UDPPeer* createServerPeer(Address& sender);
+ bool deletePeer(u16 peer_id, bool timeout);
+
+ void SetPeerID(u16 id) { m_peer_id = id; }
+
+ void sendAck(u16 peer_id, u8 channelnum, u16 seqnum);
+
+ void PrintInfo(std::ostream &out);
+ void PrintInfo();
+
+ std::list<u16> getPeerIDs()
+ {
+ JMutexAutoLock peerlock(m_peers_mutex);
+ return m_peer_ids;
+ }
+
+ UDPSocket m_udpSocket;
+ MutexedQueue<ConnectionCommand> m_command_queue;
+
+ void putEvent(ConnectionEvent &e);
+
+ void TriggerSend()
+ { m_sendThread.Trigger(); }
+private:
+ std::list<Peer*> getPeers();
+
+ MutexedQueue<ConnectionEvent> m_event_queue;
+
+ u16 m_peer_id;
+ u32 m_protocol_id;
+
+ std::map<u16, Peer*> m_peers;
+ std::list<u16> m_peer_ids;
+ JMutex m_peers_mutex;
+
+ ConnectionSendThread m_sendThread;
+ ConnectionReceiveThread m_receiveThread;
+
+ JMutex m_info_mutex;
+
+ // Backwards compatibility
+ PeerHandler *m_bc_peerhandler;
+ int m_bc_receive_timeout;
+
+ bool m_shutting_down;
+
+ u16 m_next_remote_peer_id;
+};
+
+} // namespace
+
+#endif
diff --git a/src/network/networkpacket.cpp b/src/network/networkpacket.cpp
new file mode 100644
index 000000000..b5e451cdb
--- /dev/null
+++ b/src/network/networkpacket.cpp
@@ -0,0 +1,520 @@
+/*
+Minetest
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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 "networkpacket.h"
+#include "debug.h"
+#include "exceptions.h"
+#include "util/serialize.h"
+
+NetworkPacket::NetworkPacket(u16 command, u32 datasize, u16 peer_id):
+m_datasize(datasize), m_read_offset(0), m_command(command), m_peer_id(peer_id)
+{
+ m_data.resize(m_datasize);
+}
+
+NetworkPacket::NetworkPacket(u16 command, u32 datasize):
+m_datasize(datasize), m_read_offset(0), m_command(command), m_peer_id(0)
+{
+ m_data.resize(m_datasize);
+}
+
+NetworkPacket::~NetworkPacket()
+{
+ m_data.clear();
+}
+
+void NetworkPacket::checkReadOffset(u32 from_offset, u32 field_size)
+{
+ if (from_offset + field_size > m_datasize) {
+ std::stringstream ss;
+ ss << "Reading outside packet (offset: " <<
+ from_offset << ", packet size: " << getSize() << ")";
+ throw PacketError(ss.str());
+ }
+}
+
+void NetworkPacket::putRawPacket(u8 *data, u32 datasize, u16 peer_id)
+{
+ // If a m_command is already set, we are rewriting on same packet
+ // This is not permitted
+ assert(m_command == 0);
+
+ m_datasize = datasize - 2;
+ m_peer_id = peer_id;
+
+ // split command and datas
+ m_command = readU16(&data[0]);
+ m_data = std::vector<u8>(&data[2], &data[2 + m_datasize]);
+}
+
+char* NetworkPacket::getString(u32 from_offset)
+{
+ checkReadOffset(from_offset, 0);
+
+ return (char*)&m_data[from_offset];
+}
+
+void NetworkPacket::putRawString(const char* src, u32 len)
+{
+ if (m_read_offset + len > m_datasize) {
+ m_datasize = m_read_offset + len;
+ m_data.resize(m_datasize);
+ }
+
+ memcpy(&m_data[m_read_offset], src, len);
+ m_read_offset += len;
+}
+
+NetworkPacket& NetworkPacket::operator>>(std::string& dst)
+{
+ checkReadOffset(m_read_offset, 2);
+ u16 strLen = readU16(&m_data[m_read_offset]);
+ m_read_offset += 2;
+
+ dst.clear();
+
+ if (strLen == 0) {
+ return *this;
+ }
+
+ checkReadOffset(m_read_offset, strLen);
+
+ dst.reserve(strLen);
+ dst.append((char*)&m_data[m_read_offset], strLen);
+
+ m_read_offset += strLen;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(std::string src)
+{
+ u16 msgsize = src.size();
+ if (msgsize > STRING_MAX_LEN) {
+ throw PacketError("String too long");
+ }
+
+ *this << msgsize;
+
+ putRawString(src.c_str(), (u32)msgsize);
+
+ return *this;
+}
+
+void NetworkPacket::putLongString(std::string src)
+{
+ u32 msgsize = src.size();
+ if (msgsize > LONG_STRING_MAX_LEN) {
+ throw PacketError("String too long");
+ }
+
+ *this << msgsize;
+
+ putRawString(src.c_str(), msgsize);
+}
+
+NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
+{
+ checkReadOffset(m_read_offset, 2);
+ u16 strLen = readU16(&m_data[m_read_offset]);
+ m_read_offset += 2;
+
+ dst.clear();
+
+ if (strLen == 0) {
+ return *this;
+ }
+
+ checkReadOffset(m_read_offset, strLen * 2);
+
+ dst.reserve(strLen);
+ for(u16 i=0; i<strLen; i++) {
+ wchar_t c16 = readU16(&m_data[m_read_offset]);
+ dst.append(&c16, 1);
+ m_read_offset += sizeof(u16);
+ }
+
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(std::wstring src)
+{
+ u16 msgsize = src.size();
+ if (msgsize > WIDE_STRING_MAX_LEN) {
+ throw PacketError("String too long");
+ }
+
+ *this << msgsize;
+
+ // Write string
+ for (u16 i=0; i<msgsize; i++) {
+ *this << (u16) src[i];
+ }
+
+ return *this;
+}
+
+std::string NetworkPacket::readLongString()
+{
+ checkReadOffset(m_read_offset, 4);
+ u32 strLen = readU32(&m_data[m_read_offset]);
+ m_read_offset += 4;
+
+ if (strLen == 0) {
+ return "";
+ }
+
+ if (strLen > LONG_STRING_MAX_LEN) {
+ throw PacketError("String too long");
+ }
+
+ checkReadOffset(m_read_offset, strLen);
+
+ std::string dst;
+
+ dst.reserve(strLen);
+ dst.append((char*)&m_data[m_read_offset], strLen);
+
+ m_read_offset += strLen;
+
+ return dst;
+}
+
+NetworkPacket& NetworkPacket::operator>>(char& dst)
+{
+ checkReadOffset(m_read_offset, 1);
+
+ dst = readU8(&m_data[m_read_offset]);
+
+ m_read_offset += 1;
+ return *this;
+}
+
+char NetworkPacket::getChar(u32 offset)
+{
+ checkReadOffset(offset, 1);
+
+ return readU8(&m_data[offset]);
+}
+
+NetworkPacket& NetworkPacket::operator<<(char src)
+{
+ checkDataSize(1);
+
+ writeU8(&m_data[m_read_offset], src);
+
+ m_read_offset += 1;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(u8 src)
+{
+ checkDataSize(1);
+
+ writeU8(&m_data[m_read_offset], src);
+
+ m_read_offset += 1;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(bool src)
+{
+ checkDataSize(1);
+
+ writeU8(&m_data[m_read_offset], src);
+
+ m_read_offset += 1;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(u16 src)
+{
+ checkDataSize(2);
+
+ writeU16(&m_data[m_read_offset], src);
+
+ m_read_offset += 2;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(u32 src)
+{
+ checkDataSize(4);
+
+ writeU32(&m_data[m_read_offset], src);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(u64 src)
+{
+ checkDataSize(8);
+
+ writeU64(&m_data[m_read_offset], src);
+
+ m_read_offset += 8;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(float src)
+{
+ checkDataSize(4);
+
+ writeF1000(&m_data[m_read_offset], src);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(bool& dst)
+{
+ checkReadOffset(m_read_offset, 1);
+
+ dst = readU8(&m_data[m_read_offset]);
+
+ m_read_offset += 1;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(u8& dst)
+{
+ checkReadOffset(m_read_offset, 1);
+
+ dst = readU8(&m_data[m_read_offset]);
+
+ m_read_offset += 1;
+ return *this;
+}
+
+u8 NetworkPacket::getU8(u32 offset)
+{
+ checkReadOffset(offset, 1);
+
+ return readU8(&m_data[offset]);
+}
+
+u8* NetworkPacket::getU8Ptr(u32 from_offset)
+{
+ if (m_datasize == 0) {
+ return NULL;
+ }
+
+ checkReadOffset(from_offset, 1);
+
+ return (u8*)&m_data[from_offset];
+}
+
+NetworkPacket& NetworkPacket::operator>>(u16& dst)
+{
+ checkReadOffset(m_read_offset, 2);
+
+ dst = readU16(&m_data[m_read_offset]);
+
+ m_read_offset += 2;
+ return *this;
+}
+
+u16 NetworkPacket::getU16(u32 from_offset)
+{
+ checkReadOffset(from_offset, 2);
+
+ return readU16(&m_data[from_offset]);
+}
+
+NetworkPacket& NetworkPacket::operator>>(u32& dst)
+{
+ checkReadOffset(m_read_offset, 4);
+
+ dst = readU32(&m_data[m_read_offset]);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(u64& dst)
+{
+ checkReadOffset(m_read_offset, 8);
+
+ dst = readU64(&m_data[m_read_offset]);
+
+ m_read_offset += 8;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(float& dst)
+{
+ checkReadOffset(m_read_offset, 4);
+
+ dst = readF1000(&m_data[m_read_offset]);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(v2f& dst)
+{
+ checkReadOffset(m_read_offset, 8);
+
+ dst = readV2F1000(&m_data[m_read_offset]);
+
+ m_read_offset += 8;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(v3f& dst)
+{
+ checkReadOffset(m_read_offset, 12);
+
+ dst = readV3F1000(&m_data[m_read_offset]);
+
+ m_read_offset += 12;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(s16& dst)
+{
+ checkReadOffset(m_read_offset, 2);
+
+ dst = readS16(&m_data[m_read_offset]);
+
+ m_read_offset += 2;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(s16 src)
+{
+ *this << (u16) src;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(s32& dst)
+{
+ checkReadOffset(m_read_offset, 4);
+
+ dst = readS32(&m_data[m_read_offset]);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(s32 src)
+{
+ *this << (u32) src;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
+{
+ checkReadOffset(m_read_offset, 6);
+
+ dst = readV3S16(&m_data[m_read_offset]);
+
+ m_read_offset += 6;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
+{
+ checkReadOffset(m_read_offset, 8);
+
+ dst = readV2S32(&m_data[m_read_offset]);
+
+ m_read_offset += 8;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
+{
+ checkReadOffset(m_read_offset, 12);
+
+ dst = readV3S32(&m_data[m_read_offset]);
+
+ m_read_offset += 12;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(v2f src)
+{
+ *this << (float) src.X;
+ *this << (float) src.Y;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(v3f src)
+{
+ *this << (float) src.X;
+ *this << (float) src.Y;
+ *this << (float) src.Z;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(v3s16 src)
+{
+ *this << (s16) src.X;
+ *this << (s16) src.Y;
+ *this << (s16) src.Z;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(v2s32 src)
+{
+ *this << (s32) src.X;
+ *this << (s32) src.Y;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(v3s32 src)
+{
+ *this << (s32) src.X;
+ *this << (s32) src.Y;
+ *this << (s32) src.Z;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
+{
+ checkReadOffset(m_read_offset, 4);
+
+ dst = readARGB8(&m_data[m_read_offset]);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+NetworkPacket& NetworkPacket::operator<<(video::SColor src)
+{
+ checkDataSize(4);
+
+ writeU32(&m_data[m_read_offset], src.color);
+
+ m_read_offset += 4;
+ return *this;
+}
+
+Buffer<u8> NetworkPacket::oldForgePacket()
+{
+ Buffer<u8> sb(m_datasize + 2);
+ writeU16(&sb[0], m_command);
+
+ u8* datas = getU8Ptr(0);
+
+ if (datas != NULL)
+ memcpy(&sb[2], datas, m_datasize);
+ return sb;
+}
diff --git a/src/network/networkpacket.h b/src/network/networkpacket.h
new file mode 100644
index 000000000..72f8cabe2
--- /dev/null
+++ b/src/network/networkpacket.h
@@ -0,0 +1,131 @@
+/*
+Minetest
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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.
+*/
+
+#ifndef NETWORKPACKET_HEADER
+#define NETWORKPACKET_HEADER
+
+#include "util/pointer.h"
+#include "util/numeric.h"
+#include "networkprotocol.h"
+
+class NetworkPacket
+{
+
+public:
+ NetworkPacket(u16 command, u32 datasize, u16 peer_id);
+ NetworkPacket(u16 command, u32 datasize);
+ NetworkPacket(): m_datasize(0), m_read_offset(0), m_command(0),
+ m_peer_id(0) {}
+ ~NetworkPacket();
+
+ void putRawPacket(u8 *data, u32 datasize, u16 peer_id);
+
+ // Getters
+ u32 getSize() { return m_datasize; }
+ u16 getPeerId() { return m_peer_id; }
+ u16 getCommand() { return m_command; }
+
+ // Returns a c-string without copying.
+ // A better name for this would be getRawString()
+ char* getString(u32 from_offset);
+ // major difference to putCString(): doesn't write len into the buffer
+ void putRawString(const char* src, u32 len);
+
+ NetworkPacket& operator>>(std::string& dst);
+ NetworkPacket& operator<<(std::string src);
+
+ void putLongString(std::string src);
+
+ NetworkPacket& operator>>(std::wstring& dst);
+ NetworkPacket& operator<<(std::wstring src);
+
+ std::string readLongString();
+
+ char getChar(u32 offset);
+ NetworkPacket& operator>>(char& dst);
+ NetworkPacket& operator<<(char src);
+
+ NetworkPacket& operator>>(bool& dst);
+ NetworkPacket& operator<<(bool src);
+
+ u8 getU8(u32 offset);
+
+ NetworkPacket& operator>>(u8& dst);
+ NetworkPacket& operator<<(u8 src);
+
+ u8* getU8Ptr(u32 offset);
+
+ u16 getU16(u32 from_offset);
+ NetworkPacket& operator>>(u16& dst);
+ NetworkPacket& operator<<(u16 src);
+
+ NetworkPacket& operator>>(u32& dst);
+ NetworkPacket& operator<<(u32 src);
+
+ NetworkPacket& operator>>(u64& dst);
+ NetworkPacket& operator<<(u64 src);
+
+ NetworkPacket& operator>>(float& dst);
+ NetworkPacket& operator<<(float src);
+
+ NetworkPacket& operator>>(v2f& dst);
+ NetworkPacket& operator<<(v2f src);
+
+ NetworkPacket& operator>>(v3f& dst);
+ NetworkPacket& operator<<(v3f src);
+
+ NetworkPacket& operator>>(s16& dst);
+ NetworkPacket& operator<<(s16 src);
+
+ NetworkPacket& operator>>(s32& dst);
+ NetworkPacket& operator<<(s32 src);
+
+ NetworkPacket& operator>>(v2s32& dst);
+ NetworkPacket& operator<<(v2s32 src);
+
+ NetworkPacket& operator>>(v3s16& dst);
+ NetworkPacket& operator<<(v3s16 src);
+
+ NetworkPacket& operator>>(v3s32& dst);
+ NetworkPacket& operator<<(v3s32 src);
+
+ NetworkPacket& operator>>(video::SColor& dst);
+ NetworkPacket& operator<<(video::SColor src);
+
+ // Temp, we remove SharedBuffer when migration finished
+ Buffer<u8> oldForgePacket();
+private:
+ void checkReadOffset(u32 from_offset, u32 field_size);
+
+ inline void checkDataSize(u32 field_size)
+ {
+ if (m_read_offset + field_size > m_datasize) {
+ m_datasize = m_read_offset + field_size;
+ m_data.resize(m_datasize);
+ }
+ }
+
+ std::vector<u8> m_data;
+ u32 m_datasize;
+ u32 m_read_offset;
+ u16 m_command;
+ u16 m_peer_id;
+};
+
+#endif
diff --git a/src/network/networkprotocol.h b/src/network/networkprotocol.h
new file mode 100644
index 000000000..82c82f79e
--- /dev/null
+++ b/src/network/networkprotocol.h
@@ -0,0 +1,966 @@
+/*
+Minetest
+Copyright (C) 2010-2013 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.
+*/
+
+#ifndef NETWORKPROTOCOL_HEADER
+#define NETWORKPROTOCOL_HEADER
+#include "util/string.h"
+
+/*
+ changes by PROTOCOL_VERSION:
+
+ PROTOCOL_VERSION 3:
+ Base for writing changes here
+ PROTOCOL_VERSION 4:
+ Add TOCLIENT_MEDIA
+ Add TOCLIENT_TOOLDEF
+ Add TOCLIENT_NODEDEF
+ Add TOCLIENT_CRAFTITEMDEF
+ Add TOSERVER_INTERACT
+ Obsolete TOSERVER_CLICK_ACTIVEOBJECT
+ Obsolete TOSERVER_GROUND_ACTION
+ PROTOCOL_VERSION 5:
+ Make players to be handled mostly as ActiveObjects
+ PROTOCOL_VERSION 6:
+ Only non-cached textures are sent
+ PROTOCOL_VERSION 7:
+ Add TOCLIENT_ITEMDEF
+ Obsolete TOCLIENT_TOOLDEF
+ Obsolete TOCLIENT_CRAFTITEMDEF
+ Compress the contents of TOCLIENT_ITEMDEF and TOCLIENT_NODEDEF
+ PROTOCOL_VERSION 8:
+ Digging based on item groups
+ Many things
+ PROTOCOL_VERSION 9:
+ ContentFeatures and NodeDefManager use a different serialization
+ format; better for future version cross-compatibility
+ Many things
+ PROTOCOL_VERSION 10:
+ TOCLIENT_PRIVILEGES
+ Version raised to force 'fly' and 'fast' privileges into effect.
+ Node metadata change (came in later; somewhat incompatible)
+ PROTOCOL_VERSION 11:
+ TileDef in ContentFeatures
+ Nodebox drawtype
+ (some dev snapshot)
+ TOCLIENT_INVENTORY_FORMSPEC
+ (0.4.0, 0.4.1)
+ PROTOCOL_VERSION 12:
+ TOSERVER_INVENTORY_FIELDS
+ 16-bit node ids
+ TOCLIENT_DETACHED_INVENTORY
+ PROTOCOL_VERSION 13:
+ InventoryList field "Width" (deserialization fails with old versions)
+ PROTOCOL_VERSION 14:
+ Added transfer of player pressed keys to the server
+ Added new messages for mesh and bone animation, as well as attachments
+ GENERIC_CMD_SET_ANIMATION
+ GENERIC_CMD_SET_BONE_POSITION
+ GENERIC_CMD_SET_ATTACHMENT
+ PROTOCOL_VERSION 15:
+ Serialization format changes
+ PROTOCOL_VERSION 16:
+ TOCLIENT_SHOW_FORMSPEC
+ PROTOCOL_VERSION 17:
+ Serialization format change: include backface_culling flag in TileDef
+ Added rightclickable field in nodedef
+ TOCLIENT_SPAWN_PARTICLE
+ TOCLIENT_ADD_PARTICLESPAWNER
+ TOCLIENT_DELETE_PARTICLESPAWNER
+ PROTOCOL_VERSION 18:
+ damageGroups added to ToolCapabilities
+ sound_place added to ItemDefinition
+ PROTOCOL_VERSION 19:
+ GENERIC_CMD_SET_PHYSICS_OVERRIDE
+ PROTOCOL_VERSION 20:
+ TOCLIENT_HUDADD
+ TOCLIENT_HUDRM
+ TOCLIENT_HUDCHANGE
+ TOCLIENT_HUD_SET_FLAGS
+ PROTOCOL_VERSION 21:
+ TOCLIENT_BREATH
+ TOSERVER_BREATH
+ range added to ItemDefinition
+ drowning, leveled and liquid_range added to ContentFeatures
+ stepheight and collideWithObjects added to object properties
+ version, heat and humidity transfer in MapBock
+ automatic_face_movement_dir and automatic_face_movement_dir_offset
+ added to object properties
+ PROTOCOL_VERSION 22:
+ add swap_node
+ PROTOCOL_VERSION 23:
+ TOSERVER_CLIENT_READY
+ PROTOCOL_VERSION 24:
+ ContentFeatures version 7
+ ContentFeatures: change number of special tiles to 6 (CF_SPECIAL_COUNT)
+ PROTOCOL_VERSION 25:
+ Rename TOCLIENT_ACCESS_DENIED to TOCLIENT_ACCESS_DENIED_LEGAGY
+ Rename TOCLIENT_DELETE_PARTICLESPAWNER to
+ TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY
+ Rename TOSERVER_PASSWORD to TOSERVER_PASSWORD_LEGACY
+ Rename TOSERVER_INIT to TOSERVER_INIT_LEGACY
+ Rename TOCLIENT_INIT to TOCLIENT_INIT_LEGACY
+ Add TOCLIENT_ACCESS_DENIED new opcode (0x0A), using error codes
+ for standard error, keeping customisation possible. This
+ permit translation
+ Add TOCLIENT_DELETE_PARTICLESPAWNER (0x53), fixing the u16 read and
+ reading u32
+ Add new opcode TOSERVER_INIT for client presentation to server
+ Add new opcodes TOSERVER_FIRST_SRP, TOSERVER_SRP_BYTES_A,
+ TOSERVER_SRP_BYTES_M, TOCLIENT_SRP_BYTES_S_B
+ for the three supported auth mechanisms around srp
+ Add new opcodes TOCLIENT_ACCEPT_SUDO_MODE and TOCLIENT_DENY_SUDO_MODE
+ for sudo mode handling (auth mech generic way of changing password).
+ Add TOCLIENT_HELLO for presenting server to client after client
+ presentation
+ Add TOCLIENT_AUTH_ACCEPT to accept connection from client
+ Rename GENERIC_CMD_SET_ATTACHMENT to GENERIC_CMD_ATTACH_TO
+ PROTOCOL_VERSION 26:
+ Add TileDef tileable_horizontal, tileable_vertical flags
+*/
+
+#define LATEST_PROTOCOL_VERSION 26
+
+// Server's supported network protocol range
+#define SERVER_PROTOCOL_VERSION_MIN 13
+#define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
+
+// Client's supported network protocol range
+#define CLIENT_PROTOCOL_VERSION_MIN 13
+#define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
+
+// Constant that differentiates the protocol from random data and other protocols
+#define PROTOCOL_ID 0x4f457403
+
+#define PASSWORD_SIZE 28 // Maximum password length. Allows for
+ // base64-encoded SHA-1 (27+\0).
+
+#define FORMSPEC_API_VERSION 1
+#define FORMSPEC_VERSION_STRING "formspec_version[" TOSTRING(FORMSPEC_API_VERSION) "]"
+
+#define TEXTURENAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.-"
+
+enum ToClientCommand
+{
+ TOCLIENT_HELLO = 0x02,
+ /*
+ Sent after TOSERVER_INIT.
+
+ u8 deployed serialisation version
+ u16 deployed network compression mode
+ u16 deployed protocol version
+ u32 supported auth methods
+ std::string username that should be used for legacy hash (for proper casing)
+ */
+ TOCLIENT_AUTH_ACCEPT = 0x03,
+ /*
+ Message from server to accept auth.
+
+ v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
+ u64 map seed
+ f1000 recommended send interval
+ u32 : supported auth methods for sudo mode
+ (where the user can change their password)
+ */
+ TOCLIENT_ACCEPT_SUDO_MODE = 0x04,
+ /*
+ Sent to client to show it is in sudo mode now.
+ */
+ TOCLIENT_DENY_SUDO_MODE = 0x05,
+ /*
+ Signals client that sudo mode auth failed.
+ */
+ TOCLIENT_INIT_LEGACY = 0x10,
+ /*
+ Server's reply to TOSERVER_INIT.
+ Sent second after connected.
+
+ [0] u16 TOSERVER_INIT
+ [2] u8 deployed version
+ [3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
+ [12] u64 map seed (new as of 2011-02-27)
+ [20] f1000 recommended send interval (in seconds) (new as of 14)
+
+ NOTE: The position in here is deprecated; position is
+ explicitly sent afterwards
+ */
+ TOCLIENT_ACCESS_DENIED = 0x0A,
+ /*
+ u8 reason
+ std::string custom reason (if needed, otherwise "")
+ u8 (bool) reconnect
+ */
+ TOCLIENT_BLOCKDATA = 0x20, //TODO: Multiple blocks
+ TOCLIENT_ADDNODE = 0x21,
+ /*
+ u16 command
+ v3s16 position
+ serialized mapnode
+ u8 keep_metadata // Added in protocol version 22
+ */
+ TOCLIENT_REMOVENODE = 0x22,
+
+ TOCLIENT_PLAYERPOS = 0x23, // Obsolete
+ /*
+ [0] u16 command
+ // Followed by an arbitary number of these:
+ // Number is determined from packet length.
+ [N] u16 peer_id
+ [N+2] v3s32 position*100
+ [N+2+12] v3s32 speed*100
+ [N+2+12+12] s32 pitch*100
+ [N+2+12+12+4] s32 yaw*100
+ */
+
+ TOCLIENT_PLAYERINFO = 0x24, // Obsolete
+ /*
+ [0] u16 command
+ // Followed by an arbitary number of these:
+ // Number is determined from packet length.
+ [N] u16 peer_id
+ [N] char[20] name
+ */
+
+ TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete
+
+ TOCLIENT_SECTORMETA = 0x26, // Obsolete
+ /*
+ [0] u16 command
+ [2] u8 sector count
+ [3...] v2s16 pos + sector metadata
+ */
+
+ TOCLIENT_INVENTORY = 0x27,
+ /*
+ [0] u16 command
+ [2] serialized inventory
+ */
+
+ TOCLIENT_OBJECTDATA = 0x28, // Obsolete
+ /*
+ Sent as unreliable.
+
+ u16 command
+ u16 number of player positions
+ for each player:
+ u16 peer_id
+ v3s32 position*100
+ v3s32 speed*100
+ s32 pitch*100
+ s32 yaw*100
+ u16 count of blocks
+ for each block:
+ v3s16 blockpos
+ block objects
+ */
+
+ TOCLIENT_TIME_OF_DAY = 0x29,
+ /*
+ u16 command
+ u16 time (0-23999)
+ Added in a later version:
+ f1000 time_speed
+ */
+
+ // (oops, there is some gap here)
+
+ TOCLIENT_CHAT_MESSAGE = 0x30,
+ /*
+ u16 command
+ u16 length
+ wstring message
+ */
+
+ TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD = 0x31,
+ /*
+ u16 command
+ u16 count of removed objects
+ for all removed objects {
+ u16 id
+ }
+ u16 count of added objects
+ for all added objects {
+ u16 id
+ u8 type
+ u32 initialization data length
+ string initialization data
+ }
+ */
+
+ TOCLIENT_ACTIVE_OBJECT_MESSAGES = 0x32,
+ /*
+ u16 command
+ for all objects
+ {
+ u16 id
+ u16 message length
+ string message
+ }
+ */
+
+ TOCLIENT_HP = 0x33,
+ /*
+ u16 command
+ u8 hp
+ */
+
+ TOCLIENT_MOVE_PLAYER = 0x34,
+ /*
+ u16 command
+ v3f1000 player position
+ f1000 player pitch
+ f1000 player yaw
+ */
+
+ TOCLIENT_ACCESS_DENIED_LEGACY = 0x35,
+ /*
+ u16 command
+ u16 reason_length
+ wstring reason
+ */
+
+ TOCLIENT_PLAYERITEM = 0x36, // Obsolete
+ /*
+ u16 command
+ u16 count of player items
+ for all player items {
+ u16 peer id
+ u16 length of serialized item
+ string serialized item
+ }
+ */
+
+ TOCLIENT_DEATHSCREEN = 0x37,
+ /*
+ u16 command
+ u8 bool set camera point target
+ v3f1000 camera point target (to point the death cause or whatever)
+ */
+
+ TOCLIENT_MEDIA = 0x38,
+ /*
+ u16 command
+ u16 total number of texture bunches
+ u16 index of this bunch
+ u32 number of files in this bunch
+ for each file {
+ u16 length of name
+ string name
+ u32 length of data
+ data
+ }
+ u16 length of remote media server url (if applicable)
+ string url
+ */
+
+ TOCLIENT_TOOLDEF = 0x39,
+ /*
+ u16 command
+ u32 length of the next item
+ serialized ToolDefManager
+ */
+
+ TOCLIENT_NODEDEF = 0x3a,
+ /*
+ u16 command
+ u32 length of the next item
+ serialized NodeDefManager
+ */
+
+ TOCLIENT_CRAFTITEMDEF = 0x3b,
+ /*
+ u16 command
+ u32 length of the next item
+ serialized CraftiItemDefManager
+ */
+
+ TOCLIENT_ANNOUNCE_MEDIA = 0x3c,
+
+ /*
+ u16 command
+ u32 number of files
+ for each texture {
+ u16 length of name
+ string name
+ u16 length of sha1_digest
+ string sha1_digest
+ }
+ */
+
+ TOCLIENT_ITEMDEF = 0x3d,
+ /*
+ u16 command
+ u32 length of next item
+ serialized ItemDefManager
+ */
+
+ TOCLIENT_PLAY_SOUND = 0x3f,
+ /*
+ u16 command
+ s32 sound_id
+ u16 len
+ u8[len] sound name
+ s32 gain*1000
+ u8 type (0=local, 1=positional, 2=object)
+ s32[3] pos_nodes*10000
+ u16 object_id
+ u8 loop (bool)
+ */
+
+ TOCLIENT_STOP_SOUND = 0x40,
+ /*
+ u16 command
+ s32 sound_id
+ */
+
+ TOCLIENT_PRIVILEGES = 0x41,
+ /*
+ u16 command
+ u16 number of privileges
+ for each privilege
+ u16 len
+ u8[len] privilege
+ */
+
+ TOCLIENT_INVENTORY_FORMSPEC = 0x42,
+ /*
+ u16 command
+ u32 len
+ u8[len] formspec
+ */
+
+ TOCLIENT_DETACHED_INVENTORY = 0x43,
+ /*
+ [0] u16 command
+ u16 len
+ u8[len] name
+ [2] serialized inventory
+ */
+
+ TOCLIENT_SHOW_FORMSPEC = 0x44,
+ /*
+ [0] u16 command
+ u32 len
+ u8[len] formspec
+ u16 len
+ u8[len] formname
+ */
+
+ TOCLIENT_MOVEMENT = 0x45,
+ /*
+ u16 command
+ f1000 movement_acceleration_default
+ f1000 movement_acceleration_air
+ f1000 movement_acceleration_fast
+ f1000 movement_speed_walk
+ f1000 movement_speed_crouch
+ f1000 movement_speed_fast
+ f1000 movement_speed_climb
+ f1000 movement_speed_jump
+ f1000 movement_liquid_fluidity
+ f1000 movement_liquid_fluidity_smooth
+ f1000 movement_liquid_sink
+ f1000 movement_gravity
+ */
+
+ TOCLIENT_SPAWN_PARTICLE = 0x46,
+ /*
+ u16 command
+ v3f1000 pos
+ v3f1000 velocity
+ v3f1000 acceleration
+ f1000 expirationtime
+ f1000 size
+ u8 bool collisiondetection
+ u8 bool vertical
+ u32 len
+ u8[len] texture
+ */
+
+ TOCLIENT_ADD_PARTICLESPAWNER = 0x47,
+ /*
+ u16 command
+ u16 amount
+ f1000 spawntime
+ v3f1000 minpos
+ v3f1000 maxpos
+ v3f1000 minvel
+ v3f1000 maxvel
+ v3f1000 minacc
+ v3f1000 maxacc
+ f1000 minexptime
+ f1000 maxexptime
+ f1000 minsize
+ f1000 maxsize
+ u8 bool collisiondetection
+ u8 bool vertical
+ u32 len
+ u8[len] texture
+ u32 id
+ */
+
+ TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY = 0x48,
+ /*
+ u16 command
+ u16 id
+ */
+
+ TOCLIENT_HUDADD = 0x49,
+ /*
+ u16 command
+ u32 id
+ u8 type
+ v2f1000 pos
+ u32 len
+ u8[len] name
+ v2f1000 scale
+ u32 len2
+ u8[len2] text
+ u32 number
+ u32 item
+ u32 dir
+ v2f1000 align
+ v2f1000 offset
+ v3f1000 world_pos
+ v2s32 size
+ */
+
+ TOCLIENT_HUDRM = 0x4a,
+ /*
+ u16 command
+ u32 id
+ */
+
+ TOCLIENT_HUDCHANGE = 0x4b,
+ /*
+ u16 command
+ u32 id
+ u8 stat
+ [v2f1000 data |
+ u32 len
+ u8[len] data |
+ u32 data]
+ */
+
+ TOCLIENT_HUD_SET_FLAGS = 0x4c,
+ /*
+ u16 command
+ u32 flags
+ u32 mask
+ */
+
+ TOCLIENT_HUD_SET_PARAM = 0x4d,
+ /*
+ u16 command
+ u16 param
+ u16 len
+ u8[len] value
+ */
+
+ TOCLIENT_BREATH = 0x4e,
+ /*
+ u16 command
+ u16 breath
+ */
+
+ TOCLIENT_SET_SKY = 0x4f,
+ /*
+ u16 command
+ u8[4] color (ARGB)
+ u8 len
+ u8[len] type
+ u16 count
+ foreach count:
+ u8 len
+ u8[len] param
+ */
+
+ TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO = 0x50,
+ /*
+ u16 command
+ u8 do_override (boolean)
+ u16 day-night ratio 0...65535
+ */
+
+ TOCLIENT_LOCAL_PLAYER_ANIMATIONS = 0x51,
+ /*
+ u16 command
+ v2s32 stand/idle
+ v2s32 walk
+ v2s32 dig
+ v2s32 walk+dig
+ f1000 frame_speed
+ */
+
+ TOCLIENT_EYE_OFFSET = 0x52,
+ /*
+ u16 command
+ v3f1000 first
+ v3f1000 third
+ */
+
+ TOCLIENT_DELETE_PARTICLESPAWNER = 0x53,
+ /*
+ u16 command
+ u32 id
+ */
+
+ TOCLIENT_SRP_BYTES_S_B = 0x60,
+ /*
+ Belonging to AUTH_MECHANISM_LEGACY_PASSWORD and AUTH_MECHANISM_SRP.
+
+ u16 command
+ std::string bytes_s
+ std::string bytes_B
+ */
+
+ TOCLIENT_NUM_MSG_TYPES = 0x61,
+};
+
+enum ToServerCommand
+{
+ TOSERVER_INIT = 0x02,
+ /*
+ Sent first after connected.
+
+ u8 serialisation version (=SER_FMT_VER_HIGHEST_READ)
+ u16 supported network compression modes
+ u16 minimum supported network protocol version
+ u16 maximum supported network protocol version
+ std::string player name
+ */
+
+ TOSERVER_INIT_LEGACY = 0x10,
+ /*
+ Sent first after connected.
+
+ [0] u16 TOSERVER_INIT_LEGACY
+ [2] u8 SER_FMT_VER_HIGHEST_READ
+ [3] u8[20] player_name
+ [23] u8[28] password (new in some version)
+ [51] u16 minimum supported network protocol version (added sometime)
+ [53] u16 maximum supported network protocol version (added later than the previous one)
+ */
+
+ TOSERVER_INIT2 = 0x11,
+ /*
+ Sent as an ACK for TOCLIENT_INIT.
+ After this, the server can send data.
+
+ [0] u16 TOSERVER_INIT2
+ */
+
+ TOSERVER_GETBLOCK=0x20, // Obsolete
+ TOSERVER_ADDNODE = 0x21, // Obsolete
+ TOSERVER_REMOVENODE = 0x22, // Obsolete
+
+ TOSERVER_PLAYERPOS = 0x23,
+ /*
+ [0] u16 command
+ [2] v3s32 position*100
+ [2+12] v3s32 speed*100
+ [2+12+12] s32 pitch*100
+ [2+12+12+4] s32 yaw*100
+ [2+12+12+4+4] u32 keyPressed
+ */
+
+ TOSERVER_GOTBLOCKS = 0x24,
+ /*
+ [0] u16 command
+ [2] u8 count
+ [3] v3s16 pos_0
+ [3+6] v3s16 pos_1
+ ...
+ */
+
+ TOSERVER_DELETEDBLOCKS = 0x25,
+ /*
+ [0] u16 command
+ [2] u8 count
+ [3] v3s16 pos_0
+ [3+6] v3s16 pos_1
+ ...
+ */
+
+ TOSERVER_ADDNODE_FROM_INVENTORY = 0x26, // Obsolete
+ /*
+ [0] u16 command
+ [2] v3s16 pos
+ [8] u16 i
+ */
+
+ TOSERVER_CLICK_OBJECT = 0x27, // Obsolete
+ /*
+ length: 13
+ [0] u16 command
+ [2] u8 button (0=left, 1=right)
+ [3] v3s16 blockpos
+ [9] s16 id
+ [11] u16 item
+ */
+
+ TOSERVER_GROUND_ACTION = 0x28, // Obsolete
+ /*
+ length: 17
+ [0] u16 command
+ [2] u8 action
+ [3] v3s16 nodepos_undersurface
+ [9] v3s16 nodepos_abovesurface
+ [15] u16 item
+ actions:
+ 0: start digging (from undersurface)
+ 1: place block (to abovesurface)
+ 2: stop digging (all parameters ignored)
+ 3: digging completed
+ */
+
+ TOSERVER_RELEASE = 0x29, // Obsolete
+
+ // (oops, there is some gap here)
+
+ TOSERVER_SIGNTEXT = 0x30, // Old signs, obsolete
+ /*
+ u16 command
+ v3s16 blockpos
+ s16 id
+ u16 textlen
+ textdata
+ */
+
+ TOSERVER_INVENTORY_ACTION = 0x31,
+ /*
+ See InventoryAction in inventorymanager.h
+ */
+
+ TOSERVER_CHAT_MESSAGE = 0x32,
+ /*
+ u16 command
+ u16 length
+ wstring message
+ */
+
+ TOSERVER_SIGNNODETEXT = 0x33, // obsolete
+ /*
+ u16 command
+ v3s16 p
+ u16 textlen
+ textdata
+ */
+
+ TOSERVER_CLICK_ACTIVEOBJECT = 0x34, // Obsolete
+ /*
+ length: 7
+ [0] u16 command
+ [2] u8 button (0=left, 1=right)
+ [3] u16 id
+ [5] u16 item
+ */
+
+ TOSERVER_DAMAGE = 0x35,
+ /*
+ u16 command
+ u8 amount
+ */
+
+ TOSERVER_PASSWORD_LEGACY = 0x36,
+ /*
+ Sent to change password.
+
+ [0] u16 TOSERVER_PASSWORD
+ [2] u8[28] old password
+ [30] u8[28] new password
+ */
+
+ TOSERVER_PLAYERITEM = 0x37,
+ /*
+ Sent to change selected item.
+
+ [0] u16 TOSERVER_PLAYERITEM
+ [2] u16 item
+ */
+
+ TOSERVER_RESPAWN = 0x38,
+ /*
+ u16 TOSERVER_RESPAWN
+ */
+
+ TOSERVER_INTERACT = 0x39,
+ /*
+ [0] u16 command
+ [2] u8 action
+ [3] u16 item
+ [5] u32 length of the next item
+ [9] serialized PointedThing
+ actions:
+ 0: start digging (from undersurface) or use
+ 1: stop digging (all parameters ignored)
+ 2: digging completed
+ 3: place block or item (to abovesurface)
+ 4: use item
+
+ (Obsoletes TOSERVER_GROUND_ACTION and TOSERVER_CLICK_ACTIVEOBJECT.)
+ */
+
+ TOSERVER_REMOVED_SOUNDS = 0x3a,
+ /*
+ u16 command
+ u16 len
+ s32[len] sound_id
+ */
+
+ TOSERVER_NODEMETA_FIELDS = 0x3b,
+ /*
+ u16 command
+ v3s16 p
+ u16 len
+ u8[len] form name (reserved for future use)
+ u16 number of fields
+ for each field:
+ u16 len
+ u8[len] field name
+ u32 len
+ u8[len] field value
+ */
+
+ TOSERVER_INVENTORY_FIELDS = 0x3c,
+ /*
+ u16 command
+ u16 len
+ u8[len] form name (reserved for future use)
+ u16 number of fields
+ for each field:
+ u16 len
+ u8[len] field name
+ u32 len
+ u8[len] field value
+ */
+
+ TOSERVER_REQUEST_MEDIA = 0x40,
+ /*
+ u16 command
+ u16 number of files requested
+ for each file {
+ u16 length of name
+ string name
+ }
+ */
+
+ TOSERVER_RECEIVED_MEDIA = 0x41,
+ /*
+ u16 command
+ */
+
+ TOSERVER_BREATH = 0x42,
+ /*
+ u16 command
+ u16 breath
+ */
+
+ TOSERVER_CLIENT_READY = 0x43,
+ /*
+ u8 major
+ u8 minor
+ u8 patch
+ u8 reserved
+ u16 len
+ u8[len] full_version_string
+ */
+
+ TOSERVER_FIRST_SRP = 0x50,
+ /*
+ Belonging to AUTH_MECHANISM_FIRST_SRP.
+
+ std::string srp salt
+ std::string srp verification key
+ u8 is_empty (=1 if password is empty, 0 otherwise)
+ */
+
+ TOSERVER_SRP_BYTES_A = 0x51,
+ /*
+ Belonging to AUTH_MECHANISM_LEGACY_PASSWORD and AUTH_MECHANISM_SRP,
+ depending on current_login_based_on.
+
+ std::string bytes_A
+ u8 current_login_based_on : on which version of the password's
+ hash this login is based on (0 legacy hash,
+ or 1 directly the password)
+ */
+
+ TOSERVER_SRP_BYTES_M = 0x52,
+ /*
+ Belonging to AUTH_MECHANISM_LEGACY_PASSWORD and AUTH_MECHANISM_SRP.
+
+ std::string bytes_M
+ */
+
+ TOSERVER_NUM_MSG_TYPES = 0x53,
+};
+
+enum AuthMechanism
+{
+ // reserved
+ AUTH_MECHANISM_NONE = 0,
+
+ // SRP based on the legacy hash
+ AUTH_MECHANISM_LEGACY_PASSWORD = 1 << 0,
+
+ // SRP based on the srp verification key
+ AUTH_MECHANISM_SRP = 1 << 1,
+
+ // Establishes a srp verification key, for first login and password changing
+ AUTH_MECHANISM_FIRST_SRP = 1 << 2,
+};
+
+enum AccessDeniedCode {
+ SERVER_ACCESSDENIED_WRONG_PASSWORD,
+ SERVER_ACCESSDENIED_UNEXPECTED_DATA,
+ SERVER_ACCESSDENIED_SINGLEPLAYER,
+ SERVER_ACCESSDENIED_WRONG_VERSION,
+ SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME,
+ SERVER_ACCESSDENIED_WRONG_NAME,
+ SERVER_ACCESSDENIED_TOO_MANY_USERS,
+ SERVER_ACCESSDENIED_EMPTY_PASSWORD,
+ SERVER_ACCESSDENIED_ALREADY_CONNECTED,
+ SERVER_ACCESSDENIED_SERVER_FAIL,
+ SERVER_ACCESSDENIED_CUSTOM_STRING,
+ SERVER_ACCESSDENIED_SHUTDOWN,
+ SERVER_ACCESSDENIED_CRASH,
+ SERVER_ACCESSDENIED_MAX,
+};
+
+enum NetProtoCompressionMode {
+ NETPROTO_COMPRESSION_NONE = 0,
+};
+
+const static std::string accessDeniedStrings[SERVER_ACCESSDENIED_MAX] = {
+ "Invalid password",
+ "Your client sent something the server didn't expect. Try reconnecting or updating your client",
+ "The server is running in simple singleplayer mode. You cannot connect.",
+ "Your client's version is not supported.\nPlease contact server administrator.",
+ "Player name contains disallowed characters.",
+ "Player name not allowed.",
+ "Too many users.",
+ "Empty passwords are disallowed. Set a password and try again.",
+ "Another client is connected with this name. If your client closed unexpectedly, try again in a minute.",
+ "Server authentication failed. This is likely a server error.",
+ "",
+ "Server shutting down.",
+ "This server has experienced an internal error. You will now be disconnected."
+};
+
+#endif
diff --git a/src/network/serveropcodes.cpp b/src/network/serveropcodes.cpp
new file mode 100644
index 000000000..9b14a1be3
--- /dev/null
+++ b/src/network/serveropcodes.cpp
@@ -0,0 +1,213 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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 "serveropcodes.h"
+
+const static ToServerCommandHandler null_command_handler = { "TOSERVER_NULL", TOSERVER_STATE_ALL, &Server::handleCommand_Null };
+
+const ToServerCommandHandler toServerCommandTable[TOSERVER_NUM_MSG_TYPES] =
+{
+ null_command_handler, // 0x00 (never use this)
+ null_command_handler, // 0x01
+ { "TOSERVER_INIT", TOSERVER_STATE_NOT_CONNECTED, &Server::handleCommand_Init }, // 0x02
+ null_command_handler, // 0x03
+ null_command_handler, // 0x04
+ null_command_handler, // 0x05
+ null_command_handler, // 0x06
+ null_command_handler, // 0x07
+ null_command_handler, // 0x08
+ null_command_handler, // 0x09
+ null_command_handler, // 0x0a
+ null_command_handler, // 0x0b
+ null_command_handler, // 0x0c
+ null_command_handler, // 0x0d
+ null_command_handler, // 0x0e
+ null_command_handler, // 0x0f
+ { "TOSERVER_INIT_LEGACY", TOSERVER_STATE_NOT_CONNECTED, &Server::handleCommand_Init_Legacy }, // 0x10
+ { "TOSERVER_INIT2", TOSERVER_STATE_NOT_CONNECTED, &Server::handleCommand_Init2 }, // 0x11
+ null_command_handler, // 0x12
+ null_command_handler, // 0x13
+ null_command_handler, // 0x14
+ null_command_handler, // 0x15
+ null_command_handler, // 0x16
+ null_command_handler, // 0x17
+ null_command_handler, // 0x18
+ null_command_handler, // 0x19
+ null_command_handler, // 0x1a
+ null_command_handler, // 0x1b
+ null_command_handler, // 0x1c
+ null_command_handler, // 0x1d
+ null_command_handler, // 0x1e
+ null_command_handler, // 0x1f
+ null_command_handler, // 0x20
+ null_command_handler, // 0x21
+ null_command_handler, // 0x22
+ { "TOSERVER_PLAYERPOS", TOSERVER_STATE_INGAME, &Server::handleCommand_PlayerPos }, // 0x23
+ { "TOSERVER_GOTBLOCKS", TOSERVER_STATE_STARTUP, &Server::handleCommand_GotBlocks }, // 0x24
+ { "TOSERVER_DELETEDBLOCKS", TOSERVER_STATE_INGAME, &Server::handleCommand_DeletedBlocks }, // 0x25
+ null_command_handler, // 0x26
+ { "TOSERVER_CLICK_OBJECT", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x27
+ { "TOSERVER_GROUND_ACTION", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x28
+ { "TOSERVER_RELEASE", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x29
+ null_command_handler, // 0x2a
+ null_command_handler, // 0x2b
+ null_command_handler, // 0x2c
+ null_command_handler, // 0x2d
+ null_command_handler, // 0x2e
+ null_command_handler, // 0x2f
+ { "TOSERVER_SIGNTEXT", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x30
+ { "TOSERVER_INVENTORY_ACTION", TOSERVER_STATE_INGAME, &Server::handleCommand_InventoryAction }, // 0x31
+ { "TOSERVER_CHAT_MESSAGE", TOSERVER_STATE_INGAME, &Server::handleCommand_ChatMessage }, // 0x32
+ { "TOSERVER_SIGNNODETEXT", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x33
+ { "TOSERVER_CLICK_ACTIVEOBJECT", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x34
+ { "TOSERVER_DAMAGE", TOSERVER_STATE_INGAME, &Server::handleCommand_Damage }, // 0x35
+ { "TOSERVER_PASSWORD_LEGACY", TOSERVER_STATE_INGAME, &Server::handleCommand_Password }, // 0x36
+ { "TOSERVER_PLAYERITEM", TOSERVER_STATE_INGAME, &Server::handleCommand_PlayerItem }, // 0x37
+ { "TOSERVER_RESPAWN", TOSERVER_STATE_INGAME, &Server::handleCommand_Respawn }, // 0x38
+ { "TOSERVER_INTERACT", TOSERVER_STATE_INGAME, &Server::handleCommand_Interact }, // 0x39
+ { "TOSERVER_REMOVED_SOUNDS", TOSERVER_STATE_INGAME, &Server::handleCommand_RemovedSounds }, // 0x3a
+ { "TOSERVER_NODEMETA_FIELDS", TOSERVER_STATE_INGAME, &Server::handleCommand_NodeMetaFields }, // 0x3b
+ { "TOSERVER_INVENTORY_FIELDS", TOSERVER_STATE_INGAME, &Server::handleCommand_InventoryFields }, // 0x3c
+ null_command_handler, // 0x3d
+ null_command_handler, // 0x3e
+ null_command_handler, // 0x3f
+ { "TOSERVER_REQUEST_MEDIA", TOSERVER_STATE_STARTUP, &Server::handleCommand_RequestMedia }, // 0x40
+ { "TOSERVER_RECEIVED_MEDIA", TOSERVER_STATE_STARTUP, &Server::handleCommand_ReceivedMedia }, // 0x41
+ { "TOSERVER_BREATH", TOSERVER_STATE_INGAME, &Server::handleCommand_Breath }, // 0x42
+ { "TOSERVER_CLIENT_READY", TOSERVER_STATE_STARTUP, &Server::handleCommand_ClientReady }, // 0x43
+ null_command_handler, // 0x44
+ null_command_handler, // 0x45
+ null_command_handler, // 0x46
+ null_command_handler, // 0x47
+ null_command_handler, // 0x48
+ null_command_handler, // 0x49
+ null_command_handler, // 0x4a
+ null_command_handler, // 0x4b
+ null_command_handler, // 0x4c
+ null_command_handler, // 0x4d
+ null_command_handler, // 0x4e
+ null_command_handler, // 0x4f
+ { "TOSERVER_FIRST_SRP", TOSERVER_STATE_NOT_CONNECTED, &Server::handleCommand_FirstSrp }, // 0x50
+ { "TOSERVER_SRP_BYTES_A", TOSERVER_STATE_NOT_CONNECTED, &Server::handleCommand_SrpBytesA }, // 0x51
+ { "TOSERVER_SRP_BYTES_M", TOSERVER_STATE_NOT_CONNECTED, &Server::handleCommand_SrpBytesM }, // 0x52
+};
+
+const static ClientCommandFactory null_command_factory = { "TOCLIENT_NULL", 0, false };
+
+const ClientCommandFactory clientCommandFactoryTable[TOCLIENT_NUM_MSG_TYPES] =
+{
+ null_command_factory, // 0x00
+ null_command_factory, // 0x01
+ { "TOCLIENT_HELLO", 0, true }, // 0x02
+ { "TOCLIENT_AUTH_ACCEPT", 0, true }, // 0x03
+ { "TOCLIENT_ACCEPT_SUDO_MODE", 0, true }, // 0x04
+ { "TOCLIENT_DENY_SUDO_MODE", 0, true }, // 0x05
+ null_command_factory, // 0x06
+ null_command_factory, // 0x07
+ null_command_factory, // 0x08
+ null_command_factory, // 0x09
+ { "TOCLIENT_ACCESS_DENIED", 0, true }, // 0x0A
+ null_command_factory, // 0x0B
+ null_command_factory, // 0x0C
+ null_command_factory, // 0x0D
+ null_command_factory, // 0x0E
+ null_command_factory, // 0x0F
+ { "TOCLIENT_INIT", 0, true }, // 0x10
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ { "TOCLIENT_BLOCKDATA", 2, true }, // 0x20
+ { "TOCLIENT_ADDNODE", 0, true }, // 0x21
+ { "TOCLIENT_REMOVENODE", 0, true }, // 0x22
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ { "TOCLIENT_INVENTORY", 0, true }, // 0x27
+ null_command_factory,
+ { "TOCLIENT_TIME_OF_DAY", 0, true }, // 0x29
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ { "TOCLIENT_CHAT_MESSAGE", 0, true }, // 0x30
+ { "TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD", 0, true }, // 0x31
+ { "TOCLIENT_ACTIVE_OBJECT_MESSAGES", 0, true }, // 0x32 Special packet, sent by 0 (rel) and 1 (unrel) channel
+ { "TOCLIENT_HP", 0, true }, // 0x33
+ { "TOCLIENT_MOVE_PLAYER", 0, true }, // 0x34
+ { "TOCLIENT_ACCESS_DENIED_LEGACY", 0, true }, // 0x35
+ { "TOCLIENT_PLAYERITEM", 0, false }, // 0x36 obsolete
+ { "TOCLIENT_DEATHSCREEN", 0, true }, // 0x37
+ { "TOCLIENT_MEDIA", 2, true }, // 0x38
+ { "TOCLIENT_TOOLDEF", 0, false }, // 0x39 obsolete
+ { "TOCLIENT_NODEDEF", 0, true }, // 0x3a
+ { "TOCLIENT_CRAFTITEMDEF", 0, false }, // 0x3b obsolete
+ { "TOCLIENT_ANNOUNCE_MEDIA", 0, true }, // 0x3c
+ { "TOCLIENT_ITEMDEF", 0, true }, // 0x3d
+ null_command_factory,
+ { "TOCLIENT_PLAY_SOUND", 0, true }, // 0x3f
+ { "TOCLIENT_STOP_SOUND", 0, true }, // 0x40
+ { "TOCLIENT_PRIVILEGES", 0, true }, // 0x41
+ { "TOCLIENT_INVENTORY_FORMSPEC", 0, true }, // 0x42
+ { "TOCLIENT_DETACHED_INVENTORY", 0, true }, // 0x43
+ { "TOCLIENT_SHOW_FORMSPEC", 0, true }, // 0x44
+ { "TOCLIENT_MOVEMENT", 0, true }, // 0x45
+ { "TOCLIENT_SPAWN_PARTICLE", 0, true }, // 0x46
+ { "TOCLIENT_ADD_PARTICLESPAWNER", 0, true }, // 0x47
+ { "TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY", 0, true }, // 0x48
+ { "TOCLIENT_HUDADD", 1, true }, // 0x49
+ { "TOCLIENT_HUDRM", 1, true }, // 0x4a
+ { "TOCLIENT_HUDCHANGE", 0, true }, // 0x4b
+ { "TOCLIENT_HUD_SET_FLAGS", 0, true }, // 0x4c
+ { "TOCLIENT_HUD_SET_PARAM", 0, true }, // 0x4d
+ { "TOCLIENT_BREATH", 0, true }, // 0x4e
+ { "TOCLIENT_SET_SKY", 0, true }, // 0x4f
+ { "TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO", 0, true }, // 0x50
+ { "TOCLIENT_LOCAL_PLAYER_ANIMATIONS", 0, true }, // 0x51
+ { "TOCLIENT_EYE_OFFSET", 0, true }, // 0x52
+ { "TOCLIENT_DELETE_PARTICLESPAWNER", 0, true }, // 0x53
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ null_command_factory,
+ { "TOSERVER_SRP_BYTES_S_B", 0, true }, // 0x60
+};
diff --git a/src/network/serveropcodes.h b/src/network/serveropcodes.h
new file mode 100644
index 000000000..aa3301069
--- /dev/null
+++ b/src/network/serveropcodes.h
@@ -0,0 +1,52 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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.
+*/
+
+#ifndef SERVEROPCODES_HEADER
+#define SERVEROPCODES_HEADER
+
+#include "server.h"
+#include "networkprotocol.h"
+#include "networkpacket.h"
+
+enum ToServerConnectionState {
+ TOSERVER_STATE_NOT_CONNECTED,
+ TOSERVER_STATE_STARTUP,
+ TOSERVER_STATE_INGAME,
+ TOSERVER_STATE_ALL,
+};
+struct ToServerCommandHandler
+{
+ const std::string name;
+ ToServerConnectionState state;
+ void (Server::*handler)(NetworkPacket* pkt);
+};
+
+struct ClientCommandFactory
+{
+ const char* name;
+ u16 channel;
+ bool reliable;
+};
+
+extern const ToServerCommandHandler toServerCommandTable[TOSERVER_NUM_MSG_TYPES];
+
+extern const ClientCommandFactory clientCommandFactoryTable[TOCLIENT_NUM_MSG_TYPES];
+
+#endif
diff --git a/src/network/serverpackethandler.cpp b/src/network/serverpackethandler.cpp
new file mode 100644
index 000000000..f756d80ef
--- /dev/null
+++ b/src/network/serverpackethandler.cpp
@@ -0,0 +1,2086 @@
+/*
+Minetest
+Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+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 "server.h"
+#include "log.h"
+
+#include "content_abm.h"
+#include "content_sao.h"
+#include "emerge.h"
+#include "nodedef.h"
+#include "player.h"
+#include "rollback_interface.h"
+#include "scripting_game.h"
+#include "settings.h"
+#include "tool.h"
+#include "version.h"
+#include "network/networkprotocol.h"
+#include "network/serveropcodes.h"
+#include "util/auth.h"
+#include "util/base64.h"
+#include "util/pointedthing.h"
+#include "util/serialize.h"
+#include "util/srp.h"
+
+void Server::handleCommand_Deprecated(NetworkPacket* pkt)
+{
+ infostream << "Server: " << toServerCommandTable[pkt->getCommand()].name
+ << " not supported anymore" << std::endl;
+}
+
+void Server::handleCommand_Init(NetworkPacket* pkt)
+{
+
+ if(pkt->getSize() < 1)
+ return;
+
+ RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
+
+ std::string addr_s;
+ try {
+ Address address = getPeerAddress(pkt->getPeerId());
+ addr_s = address.serializeString();
+ }
+ catch (con::PeerNotFoundException &e) {
+ /*
+ * no peer for this packet found
+ * most common reason is peer timeout, e.g. peer didn't
+ * respond for some time, your server was overloaded or
+ * things like that.
+ */
+ infostream << "Server::ProcessData(): Canceling: peer "
+ << pkt->getPeerId() << " not found" << std::endl;
+ return;
+ }
+
+ // If net_proto_version is set, this client has already been handled
+ if (client->getState() > CS_Created) {
+ verbosestream << "Server: Ignoring multiple TOSERVER_INITs from "
+ << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
+ return;
+ }
+
+ verbosestream << "Server: Got TOSERVER_INIT from " << addr_s << " (peer_id="
+ << pkt->getPeerId() << ")" << std::endl;
+
+ // Do not allow multiple players in simple singleplayer mode.
+ // This isn't a perfect way to do it, but will suffice for now
+ if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
+ infostream << "Server: Not allowing another client (" << addr_s
+ << ") to connect in simple singleplayer mode" << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SINGLEPLAYER);
+ return;
+ }
+
+ // First byte after command is maximum supported
+ // serialization version
+ u8 client_max;
+ u16 supp_compr_modes;
+ u16 min_net_proto_version = 0;
+ u16 max_net_proto_version;
+ std::string playerName;
+
+ *pkt >> client_max >> supp_compr_modes >> min_net_proto_version
+ >> max_net_proto_version >> playerName;
+
+ u8 our_max = SER_FMT_VER_HIGHEST_READ;
+ // Use the highest version supported by both
+ u8 depl_serial_v = std::min(client_max, our_max);
+ // If it's lower than the lowest supported, give up.
+ if (depl_serial_v < SER_FMT_VER_LOWEST)
+ depl_serial_v = SER_FMT_VER_INVALID;
+
+ if (depl_serial_v == SER_FMT_VER_INVALID) {
+ actionstream << "Server: A mismatched client tried to connect from "
+ << addr_s << std::endl;
+ infostream<<"Server: Cannot negotiate serialization version with "
+ << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
+ return;
+ }
+
+ client->setPendingSerializationVersion(depl_serial_v);
+
+ /*
+ Read and check network protocol version
+ */
+
+ u16 net_proto_version = 0;
+
+ // Figure out a working version if it is possible at all
+ if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
+ min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) {
+ // If maximum is larger than our maximum, go with our maximum
+ if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
+ net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
+ // Else go with client's maximum
+ else
+ net_proto_version = max_net_proto_version;
+ }
+
+ verbosestream << "Server: " << addr_s << ": Protocol version: min: "
+ << min_net_proto_version << ", max: " << max_net_proto_version
+ << ", chosen: " << net_proto_version << std::endl;
+
+ client->net_proto_version = net_proto_version;
+
+ // On this handler at least protocol version 25 is required
+ if (net_proto_version < 25 ||
+ net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
+ net_proto_version > SERVER_PROTOCOL_VERSION_MAX) {
+ actionstream << "Server: A mismatched client tried to connect from "
+ << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
+ return;
+ }
+
+ if (g_settings->getBool("strict_protocol_version_checking")) {
+ if (net_proto_version != LATEST_PROTOCOL_VERSION) {
+ actionstream << "Server: A mismatched (strict) client tried to "
+ << "connect from " << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION);
+ return;
+ }
+ }
+
+ /*
+ Validate player name
+ */
+ const char* playername = playerName.c_str();
+
+ size_t pns = playerName.size();
+ if (pns == 0 || pns > PLAYERNAME_SIZE) {
+ actionstream << "Server: Player with "
+ << ((pns > PLAYERNAME_SIZE) ? "a too long" : "an empty")
+ << " name tried to connect from " << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME);
+ return;
+ }
+
+ if (string_allowed(playerName, PLAYERNAME_ALLOWED_CHARS) == false) {
+ actionstream << "Server: Player with an invalid name "
+ << "tried to connect from " << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME);
+ return;
+ }
+
+ m_clients.setPlayerName(pkt->getPeerId(), playername);
+ //TODO (later) case insensitivity
+
+ std::string legacyPlayerNameCasing = playerName;
+
+ if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) {
+ actionstream << "Server: Player with the name \"singleplayer\" "
+ << "tried to connect from " << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME);
+ return;
+ }
+
+ {
+ std::string reason;
+ if (m_script->on_prejoinplayer(playername, addr_s, &reason)) {
+ actionstream << "Server: Player with the name \"" << playerName << "\" "
+ << "tried to connect from " << addr_s << " "
+ << "but it was disallowed for the following reason: "
+ << reason << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_CUSTOM_STRING,
+ reason.c_str());
+ return;
+ }
+ }
+
+ infostream << "Server: New connection: \"" << playerName << "\" from "
+ << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
+
+ // Enforce user limit.
+ // Don't enforce for users that have some admin right
+ if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
+ !checkPriv(playername, "server") &&
+ !checkPriv(playername, "ban") &&
+ !checkPriv(playername, "privs") &&
+ !checkPriv(playername, "password") &&
+ playername != g_settings->get("name")) {
+ actionstream << "Server: " << playername << " tried to join from "
+ << addr_s << ", but there" << " are already max_users="
+ << g_settings->getU16("max_users") << " players." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_TOO_MANY_USERS);
+ return;
+ }
+
+ /*
+ Compose auth methods for answer
+ */
+ std::string encpwd; // encrypted Password field for the user
+ bool has_auth = m_script->getAuth(playername, &encpwd, NULL);
+ u32 auth_mechs = 0;
+
+ client->chosen_mech = AUTH_MECHANISM_NONE;
+
+ if (has_auth) {
+ std::vector<std::string> pwd_components = str_split(encpwd, '#');
+ if (pwd_components.size() == 4) {
+ if (pwd_components[1] == "1") { // 1 means srp
+ auth_mechs |= AUTH_MECHANISM_SRP;
+ client->enc_pwd = encpwd;
+ } else {
+ actionstream << "User " << playername
+ << " tried to log in, but password field"
+ << " was invalid (unknown mechcode)." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
+ return;
+ }
+ } else if (base64_is_valid(encpwd)) {
+ auth_mechs |= AUTH_MECHANISM_LEGACY_PASSWORD;
+ client->enc_pwd = encpwd;
+ } else {
+ actionstream << "User " << playername
+ << " tried to log in, but password field"
+ << " was invalid (invalid base64)." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
+ return;
+ }
+ } else {
+ std::string default_password = g_settings->get("default_password");
+ if (default_password.length() == 0) {
+ auth_mechs |= AUTH_MECHANISM_FIRST_SRP;
+ } else {
+ // Take care of default passwords.
+ client->enc_pwd = getSRPVerifier(playerName, default_password);
+ auth_mechs |= AUTH_MECHANISM_SRP;
+ // Create auth, but only on successful login
+ client->create_player_on_auth_success = true;
+ }
+ }
+
+ /*
+ Answer with a TOCLIENT_HELLO
+ */
+
+ verbosestream << "Sending TOCLIENT_HELLO with auth method field: "
+ << auth_mechs << std::endl;
+
+ NetworkPacket resp_pkt(TOCLIENT_HELLO, 1 + 4
+ + legacyPlayerNameCasing.size(), pkt->getPeerId());
+
+ u16 depl_compress_mode = NETPROTO_COMPRESSION_NONE;
+ resp_pkt << depl_serial_v << depl_compress_mode << net_proto_version
+ << auth_mechs << legacyPlayerNameCasing;
+
+ Send(&resp_pkt);
+
+ client->allowed_auth_mechs = auth_mechs;
+ client->setDeployedCompressionMode(depl_compress_mode);
+
+ m_clients.event(pkt->getPeerId(), CSE_Hello);
+}
+
+void Server::handleCommand_Init_Legacy(NetworkPacket* pkt)
+{
+ // [0] u8 SER_FMT_VER_HIGHEST_READ
+ // [1] u8[20] player_name
+ // [21] u8[28] password <--- can be sent without this, from old versions
+
+ if (pkt->getSize() < 1+PLAYERNAME_SIZE)
+ return;
+
+ RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
+
+ std::string addr_s;
+ try {
+ Address address = getPeerAddress(pkt->getPeerId());
+ addr_s = address.serializeString();
+ }
+ catch (con::PeerNotFoundException &e) {
+ /*
+ * no peer for this packet found
+ * most common reason is peer timeout, e.g. peer didn't
+ * respond for some time, your server was overloaded or
+ * things like that.
+ */
+ infostream << "Server::ProcessData(): Canceling: peer "
+ << pkt->getPeerId() << " not found" << std::endl;
+ return;
+ }
+
+ // If net_proto_version is set, this client has already been handled
+ if (client->getState() > CS_Created) {
+ verbosestream << "Server: Ignoring multiple TOSERVER_INITs from "
+ << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl;
+ return;
+ }
+
+ verbosestream << "Server: Got TOSERVER_INIT_LEGACY from " << addr_s << " (peer_id="
+ << pkt->getPeerId() << ")" << std::endl;
+
+ // Do not allow multiple players in simple singleplayer mode.
+ // This isn't a perfect way to do it, but will suffice for now
+ if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
+ infostream << "Server: Not allowing another client (" << addr_s
+ << ") to connect in simple singleplayer mode" << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Running in simple singleplayer mode.");
+ return;
+ }
+
+ // First byte after command is maximum supported
+ // serialization version
+ u8 client_max;
+
+ *pkt >> client_max;
+
+ u8 our_max = SER_FMT_VER_HIGHEST_READ;
+ // Use the highest version supported by both
+ int deployed = std::min(client_max, our_max);
+ // If it's lower than the lowest supported, give up.
+ if (deployed < SER_FMT_VER_LOWEST)
+ deployed = SER_FMT_VER_INVALID;
+
+ if (deployed == SER_FMT_VER_INVALID) {
+ actionstream << "Server: A mismatched client tried to connect from "
+ << addr_s << std::endl;
+ infostream<<"Server: Cannot negotiate serialization version with "
+ << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
+ L"Your client's version is not supported.\n"
+ L"Server version is ")
+ + utf8_to_wide(g_version_string) + L"."
+ );
+ return;
+ }
+
+ client->setPendingSerializationVersion(deployed);
+
+ /*
+ Read and check network protocol version
+ */
+
+ u16 min_net_proto_version = 0;
+ if (pkt->getSize() >= 1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2)
+ min_net_proto_version = pkt->getU16(1 + PLAYERNAME_SIZE + PASSWORD_SIZE);
+
+ // Use same version as minimum and maximum if maximum version field
+ // doesn't exist (backwards compatibility)
+ u16 max_net_proto_version = min_net_proto_version;
+ if (pkt->getSize() >= 1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2 + 2)
+ max_net_proto_version = pkt->getU16(1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2);
+
+ // Start with client's maximum version
+ u16 net_proto_version = max_net_proto_version;
+
+ // Figure out a working version if it is possible at all
+ if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
+ min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) {
+ // If maximum is larger than our maximum, go with our maximum
+ if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
+ net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
+ // Else go with client's maximum
+ else
+ net_proto_version = max_net_proto_version;
+ }
+
+ // The client will send up to date init packet, ignore this one
+ if (net_proto_version >= 25)
+ return;
+
+ verbosestream << "Server: " << addr_s << ": Protocol version: min: "
+ << min_net_proto_version << ", max: " << max_net_proto_version
+ << ", chosen: " << net_proto_version << std::endl;
+
+ client->net_proto_version = net_proto_version;
+
+ if (net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
+ net_proto_version > SERVER_PROTOCOL_VERSION_MAX) {
+ actionstream << "Server: A mismatched client tried to connect from "
+ << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
+ L"Your client's version is not supported.\n"
+ L"Server version is ")
+ + utf8_to_wide(g_version_string) + L",\n"
+ + L"server's PROTOCOL_VERSION is "
+ + utf8_to_wide(itos(SERVER_PROTOCOL_VERSION_MIN))
+ + L"..."
+ + utf8_to_wide(itos(SERVER_PROTOCOL_VERSION_MAX))
+ + L", client's PROTOCOL_VERSION is "
+ + utf8_to_wide(itos(min_net_proto_version))
+ + L"..."
+ + utf8_to_wide(itos(max_net_proto_version))
+ );
+ return;
+ }
+
+ if (g_settings->getBool("strict_protocol_version_checking")) {
+ if (net_proto_version != LATEST_PROTOCOL_VERSION) {
+ actionstream << "Server: A mismatched (strict) client tried to "
+ << "connect from " << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), std::wstring(
+ L"Your client's version is not supported.\n"
+ L"Server version is ")
+ + utf8_to_wide(g_version_string) + L",\n"
+ + L"server's PROTOCOL_VERSION (strict) is "
+ + utf8_to_wide(itos(LATEST_PROTOCOL_VERSION))
+ + L", client's PROTOCOL_VERSION is "
+ + utf8_to_wide(itos(min_net_proto_version))
+ + L"..."
+ + utf8_to_wide(itos(max_net_proto_version))
+ );
+ return;
+ }
+ }
+
+ /*
+ Set up player
+ */
+ char playername[PLAYERNAME_SIZE];
+ unsigned int playername_length = 0;
+ for (; playername_length < PLAYERNAME_SIZE; playername_length++ ) {
+ playername[playername_length] = pkt->getChar(1+playername_length);
+ if (pkt->getChar(1+playername_length) == 0)
+ break;
+ }
+
+ if (playername_length == PLAYERNAME_SIZE) {
+ actionstream << "Server: Player with name exceeding max length "
+ << "tried to connect from " << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Name too long");
+ return;
+ }
+
+
+ if (playername[0]=='\0') {
+ actionstream << "Server: Player with an empty name "
+ << "tried to connect from " << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Empty name");
+ return;
+ }
+
+ if (string_allowed(playername, PLAYERNAME_ALLOWED_CHARS) == false) {
+ actionstream << "Server: Player with an invalid name "
+ << "tried to connect from " << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Name contains unallowed characters");
+ return;
+ }
+
+ if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) {
+ actionstream << "Server: Player with the name \"singleplayer\" "
+ << "tried to connect from " << addr_s << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Name is not allowed");
+ return;
+ }
+
+ {
+ std::string reason;
+ if (m_script->on_prejoinplayer(playername, addr_s, &reason)) {
+ actionstream << "Server: Player with the name \"" << playername << "\" "
+ << "tried to connect from " << addr_s << " "
+ << "but it was disallowed for the following reason: "
+ << reason << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), utf8_to_wide(reason.c_str()));
+ return;
+ }
+ }
+
+ infostream<<"Server: New connection: \""<<playername<<"\" from "
+ <<addr_s<<" (peer_id="<<pkt->getPeerId()<<")"<<std::endl;
+
+ // Get password
+ char given_password[PASSWORD_SIZE];
+ if (pkt->getSize() < 1 + PLAYERNAME_SIZE + PASSWORD_SIZE) {
+ // old version - assume blank password
+ given_password[0] = 0;
+ }
+ else {
+ for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
+ given_password[i] = pkt->getChar(21 + i);
+ }
+ given_password[PASSWORD_SIZE - 1] = 0;
+ }
+
+ if (!base64_is_valid(given_password)) {
+ actionstream << "Server: " << playername
+ << " supplied invalid password hash" << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Invalid password hash");
+ return;
+ }
+
+ // Enforce user limit.
+ // Don't enforce for users that have some admin right
+ if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") &&
+ !checkPriv(playername, "server") &&
+ !checkPriv(playername, "ban") &&
+ !checkPriv(playername, "privs") &&
+ !checkPriv(playername, "password") &&
+ playername != g_settings->get("name")) {
+ actionstream << "Server: " << playername << " tried to join, but there"
+ << " are already max_users="
+ << g_settings->getU16("max_users") << " players." << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Too many users.");
+ return;
+ }
+
+ std::string checkpwd; // Password hash to check against
+ bool has_auth = m_script->getAuth(playername, &checkpwd, NULL);
+
+ // If no authentication info exists for user, create it
+ if (!has_auth) {
+ if (!isSingleplayer() &&
+ g_settings->getBool("disallow_empty_password") &&
+ std::string(given_password) == "") {
+ actionstream << "Server: " << playername
+ << " supplied empty password" << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Empty passwords are "
+ L"disallowed. Set a password and try again.");
+ return;
+ }
+ std::string raw_default_password =
+ g_settings->get("default_password");
+ std::string initial_password =
+ translatePassword(playername, raw_default_password);
+
+ // If default_password is empty, allow any initial password
+ if (raw_default_password.length() == 0)
+ initial_password = given_password;
+
+ m_script->createAuth(playername, initial_password);
+ }
+
+ has_auth = m_script->getAuth(playername, &checkpwd, NULL);
+
+ if (!has_auth) {
+ actionstream << "Server: " << playername << " cannot be authenticated"
+ << " (auth handler does not work?)" << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Not allowed to login");
+ return;
+ }
+
+ if (given_password != checkpwd) {
+ actionstream << "Server: " << playername << " supplied wrong password"
+ << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Wrong password");
+ return;
+ }
+
+ RemotePlayer *player =
+ static_cast<RemotePlayer*>(m_env->getPlayer(playername));
+
+ if (player && player->peer_id != 0) {
+ actionstream << "Server: " << playername << ": Failed to emerge player"
+ << " (player allocated to an another client)" << std::endl;
+ DenyAccess_Legacy(pkt->getPeerId(), L"Another client is connected with this "
+ L"name. If your client closed unexpectedly, try again in "
+ L"a minute.");
+ }
+
+ m_clients.setPlayerName(pkt->getPeerId(), playername);
+
+ /*
+ Answer with a TOCLIENT_INIT
+ */
+
+ NetworkPacket resp_pkt(TOCLIENT_INIT_LEGACY, 1 + 6 + 8 + 4,
+ pkt->getPeerId());
+
+ resp_pkt << (u8) deployed << (v3s16) floatToInt(v3f(0,0,0), BS)
+ << (u64) m_env->getServerMap().getSeed()
+ << g_settings->getFloat("dedicated_server_step");
+
+ Send(&resp_pkt);
+ m_clients.event(pkt->getPeerId(), CSE_InitLegacy);
+}
+
+void Server::handleCommand_Init2(NetworkPacket* pkt)
+{
+ verbosestream << "Server: Got TOSERVER_INIT2 from "
+ << pkt->getPeerId() << std::endl;
+
+ m_clients.event(pkt->getPeerId(), CSE_GotInit2);
+ u16 protocol_version = m_clients.getProtocolVersion(pkt->getPeerId());
+
+
+ ///// begin compatibility code
+ PlayerSAO* playersao = NULL;
+ if (protocol_version <= 22) {
+ playersao = StageTwoClientInit(pkt->getPeerId());
+
+ if (playersao == NULL) {
+ actionstream
+ << "TOSERVER_INIT2 stage 2 client init failed for peer "
+ << pkt->getPeerId() << std::endl;
+ return;
+ }
+ }
+ ///// end compatibility code
+
+ /*
+ Send some initialization data
+ */
+
+ infostream << "Server: Sending content to "
+ << getPlayerName(pkt->getPeerId()) << std::endl;
+
+ // Send player movement settings
+ SendMovement(pkt->getPeerId());
+
+ // Send item definitions
+ SendItemDef(pkt->getPeerId(), m_itemdef, protocol_version);
+
+ // Send node definitions
+ SendNodeDef(pkt->getPeerId(), m_nodedef, protocol_version);
+
+ m_clients.event(pkt->getPeerId(), CSE_SetDefinitionsSent);
+
+ // Send media announcement
+ sendMediaAnnouncement(pkt->getPeerId());
+
+ // Send detached inventories
+ sendDetachedInventories(pkt->getPeerId());
+
+ // Send time of day
+ u16 time = m_env->getTimeOfDay();
+ float time_speed = g_settings->getFloat("time_speed");
+ SendTimeOfDay(pkt->getPeerId(), time, time_speed);
+
+ ///// begin compatibility code
+ if (protocol_version <= 22) {
+ m_clients.event(pkt->getPeerId(), CSE_SetClientReady);
+ m_script->on_joinplayer(playersao);
+ }
+ ///// end compatibility code
+
+ // Warnings about protocol version can be issued here
+ if (getClient(pkt->getPeerId())->net_proto_version < LATEST_PROTOCOL_VERSION) {
+ SendChatMessage(pkt->getPeerId(), L"# Server: WARNING: YOUR CLIENT'S "
+ L"VERSION MAY NOT BE FULLY COMPATIBLE WITH THIS SERVER!");
+ }
+}
+
+void Server::handleCommand_RequestMedia(NetworkPacket* pkt)
+{
+ std::vector<std::string> tosend;
+ u16 numfiles;
+
+ *pkt >> numfiles;
+
+ infostream << "Sending " << numfiles << " files to "
+ << getPlayerName(pkt->getPeerId()) << std::endl;
+ verbosestream << "TOSERVER_REQUEST_MEDIA: " << std::endl;
+
+ for (u16 i = 0; i < numfiles; i++) {
+ std::string name;
+
+ *pkt >> name;
+
+ tosend.push_back(name);
+ verbosestream << "TOSERVER_REQUEST_MEDIA: requested file "
+ << name << std::endl;
+ }
+
+ sendRequestedMedia(pkt->getPeerId(), tosend);
+}
+
+void Server::handleCommand_ReceivedMedia(NetworkPacket* pkt)
+{
+}
+
+void Server::handleCommand_ClientReady(NetworkPacket* pkt)
+{
+ u16 peer_id = pkt->getPeerId();
+ u16 peer_proto_ver = getClient(peer_id, CS_InitDone)->net_proto_version;
+
+ // clients <= protocol version 22 did not send ready message,
+ // they're already initialized
+ if (peer_proto_ver <= 22) {
+ infostream << "Client sent message not expected by a "
+ << "client using protocol version <= 22,"
+ << "disconnecting peer_id: " << peer_id << std::endl;
+ m_con.DisconnectPeer(peer_id);
+ return;
+ }
+
+ PlayerSAO* playersao = StageTwoClientInit(peer_id);
+
+ if (playersao == NULL) {
+ actionstream
+ << "TOSERVER_CLIENT_READY stage 2 client init failed for peer_id: "
+ << peer_id << std::endl;
+ m_con.DisconnectPeer(peer_id);
+ return;
+ }
+
+
+ if (pkt->getSize() < 8) {
+ errorstream
+ << "TOSERVER_CLIENT_READY client sent inconsistent data, disconnecting peer_id: "
+ << peer_id << std::endl;
+ m_con.DisconnectPeer(peer_id);
+ return;
+ }
+
+ u8 major_ver, minor_ver, patch_ver, reserved;
+ std::string full_ver;
+ *pkt >> major_ver >> minor_ver >> patch_ver >> reserved >> full_ver;
+
+ m_clients.setClientVersion(
+ peer_id, major_ver, minor_ver, patch_ver,
+ full_ver);
+
+ m_clients.event(peer_id, CSE_SetClientReady);
+ m_script->on_joinplayer(playersao);
+}
+
+void Server::handleCommand_GotBlocks(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 1)
+ return;
+
+ /*
+ [0] u16 command
+ [2] u8 count
+ [3] v3s16 pos_0
+ [3+6] v3s16 pos_1
+ ...
+ */
+
+ u8 count;
+ *pkt >> count;
+
+ RemoteClient *client = getClient(pkt->getPeerId());
+
+ for (u16 i = 0; i < count; i++) {
+ if ((s16)pkt->getSize() < 1 + (i + 1) * 6)
+ throw con::InvalidIncomingDataException
+ ("GOTBLOCKS length is too short");
+ v3s16 p;
+
+ *pkt >> p;
+
+ client->GotBlock(p);
+ }
+}
+
+void Server::handleCommand_PlayerPos(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 12 + 12 + 4 + 4)
+ return;
+
+ v3s32 ps, ss;
+ s32 f32pitch, f32yaw;
+
+ *pkt >> ps;
+ *pkt >> ss;
+ *pkt >> f32pitch;
+ *pkt >> f32yaw;
+
+ f32 pitch = (f32)f32pitch / 100.0;
+ f32 yaw = (f32)f32yaw / 100.0;
+ u32 keyPressed = 0;
+
+ if (pkt->getSize() >= 12 + 12 + 4 + 4 + 4)
+ *pkt >> keyPressed;
+
+ v3f position((f32)ps.X / 100.0, (f32)ps.Y / 100.0, (f32)ps.Z / 100.0);
+ v3f speed((f32)ss.X / 100.0, (f32)ss.Y / 100.0, (f32)ss.Z / 100.0);
+
+ pitch = modulo360f(pitch);
+ yaw = modulo360f(yaw);
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ // If player is dead we don't care of this packet
+ if (player->isDead()) {
+ verbosestream << "TOSERVER_PLAYERPOS: " << player->getName()
+ << " is dead. Ignoring packet";
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ player->setPosition(position);
+ player->setSpeed(speed);
+ player->setPitch(pitch);
+ player->setYaw(yaw);
+ player->keyPressed = keyPressed;
+ player->control.up = (keyPressed & 1);
+ player->control.down = (keyPressed & 2);
+ player->control.left = (keyPressed & 4);
+ player->control.right = (keyPressed & 8);
+ player->control.jump = (keyPressed & 16);
+ player->control.aux1 = (keyPressed & 32);
+ player->control.sneak = (keyPressed & 64);
+ player->control.LMB = (keyPressed & 128);
+ player->control.RMB = (keyPressed & 256);
+
+ if (playersao->checkMovementCheat()) {
+ // Call callbacks
+ m_script->on_cheat(playersao, "moved_too_fast");
+ SendMovePlayer(pkt->getPeerId());
+ }
+}
+
+void Server::handleCommand_DeletedBlocks(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 1)
+ return;
+
+ /*
+ [0] u16 command
+ [2] u8 count
+ [3] v3s16 pos_0
+ [3+6] v3s16 pos_1
+ ...
+ */
+
+ u8 count;
+ *pkt >> count;
+
+ RemoteClient *client = getClient(pkt->getPeerId());
+
+ for (u16 i = 0; i < count; i++) {
+ if ((s16)pkt->getSize() < 1 + (i + 1) * 6)
+ throw con::InvalidIncomingDataException
+ ("DELETEDBLOCKS length is too short");
+ v3s16 p;
+ *pkt >> p;
+
+ client->SetBlockNotSent(p);
+ }
+}
+
+void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
+{
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ // Strip command and create a stream
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ verbosestream << "TOSERVER_INVENTORY_ACTION: data=" << datastring
+ << std::endl;
+ std::istringstream is(datastring, std::ios_base::binary);
+ // Create an action
+ InventoryAction *a = InventoryAction::deSerialize(is);
+ if (a == NULL) {
+ infostream << "TOSERVER_INVENTORY_ACTION: "
+ << "InventoryAction::deSerialize() returned NULL"
+ << std::endl;
+ return;
+ }
+
+ // If something goes wrong, this player is to blame
+ RollbackScopeActor rollback_scope(m_rollback,
+ std::string("player:")+player->getName());
+
+ /*
+ Note: Always set inventory not sent, to repair cases
+ where the client made a bad prediction.
+ */
+
+ /*
+ Handle restrictions and special cases of the move action
+ */
+ if (a->getType() == IACTION_MOVE) {
+ IMoveAction *ma = (IMoveAction*)a;
+
+ ma->from_inv.applyCurrentPlayer(player->getName());
+ ma->to_inv.applyCurrentPlayer(player->getName());
+
+ setInventoryModified(ma->from_inv, false);
+ setInventoryModified(ma->to_inv, false);
+
+ bool from_inv_is_current_player =
+ (ma->from_inv.type == InventoryLocation::PLAYER) &&
+ (ma->from_inv.name == player->getName());
+
+ bool to_inv_is_current_player =
+ (ma->to_inv.type == InventoryLocation::PLAYER) &&
+ (ma->to_inv.name == player->getName());
+
+ /*
+ Disable moving items out of craftpreview
+ */
+ if (ma->from_list == "craftpreview") {
+ infostream << "Ignoring IMoveAction from "
+ << (ma->from_inv.dump()) << ":" << ma->from_list
+ << " to " << (ma->to_inv.dump()) << ":" << ma->to_list
+ << " because src is " << ma->from_list << std::endl;
+ delete a;
+ return;
+ }
+
+ /*
+ Disable moving items into craftresult and craftpreview
+ */
+ if (ma->to_list == "craftpreview" || ma->to_list == "craftresult") {
+ infostream << "Ignoring IMoveAction from "
+ << (ma->from_inv.dump()) << ":" << ma->from_list
+ << " to " << (ma->to_inv.dump()) << ":" << ma->to_list
+ << " because dst is " << ma->to_list << std::endl;
+ delete a;
+ return;
+ }
+
+ // Disallow moving items in elsewhere than player's inventory
+ // if not allowed to interact
+ if (!checkPriv(player->getName(), "interact") &&
+ (!from_inv_is_current_player ||
+ !to_inv_is_current_player)) {
+ infostream << "Cannot move outside of player's inventory: "
+ << "No interact privilege" << std::endl;
+ delete a;
+ return;
+ }
+ }
+ /*
+ Handle restrictions and special cases of the drop action
+ */
+ else if (a->getType() == IACTION_DROP) {
+ IDropAction *da = (IDropAction*)a;
+
+ da->from_inv.applyCurrentPlayer(player->getName());
+
+ setInventoryModified(da->from_inv, false);
+
+ /*
+ Disable dropping items out of craftpreview
+ */
+ if (da->from_list == "craftpreview") {
+ infostream << "Ignoring IDropAction from "
+ << (da->from_inv.dump()) << ":" << da->from_list
+ << " because src is " << da->from_list << std::endl;
+ delete a;
+ return;
+ }
+
+ // Disallow dropping items if not allowed to interact
+ if (!checkPriv(player->getName(), "interact")) {
+ delete a;
+ return;
+ }
+ }
+ /*
+ Handle restrictions and special cases of the craft action
+ */
+ else if (a->getType() == IACTION_CRAFT) {
+ ICraftAction *ca = (ICraftAction*)a;
+
+ ca->craft_inv.applyCurrentPlayer(player->getName());
+
+ setInventoryModified(ca->craft_inv, false);
+
+ //bool craft_inv_is_current_player =
+ // (ca->craft_inv.type == InventoryLocation::PLAYER) &&
+ // (ca->craft_inv.name == player->getName());
+
+ // Disallow crafting if not allowed to interact
+ if (!checkPriv(player->getName(), "interact")) {
+ infostream << "Cannot craft: "
+ << "No interact privilege" << std::endl;
+ delete a;
+ return;
+ }
+ }
+
+ // Do the action
+ a->apply(this, playersao, this);
+ // Eat the action
+ delete a;
+
+ SendInventory(playersao);
+}
+
+void Server::handleCommand_ChatMessage(NetworkPacket* pkt)
+{
+ /*
+ u16 command
+ u16 length
+ wstring message
+ */
+ u16 len;
+ *pkt >> len;
+
+ std::wstring message;
+ for (u16 i = 0; i < len; i++) {
+ u16 tmp_wchar;
+ *pkt >> tmp_wchar;
+
+ message += (wchar_t)tmp_wchar;
+ }
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ // If something goes wrong, this player is to blame
+ RollbackScopeActor rollback_scope(m_rollback,
+ std::string("player:")+player->getName());
+
+ // Get player name of this client
+ std::wstring name = narrow_to_wide(player->getName());
+
+ // Run script hook
+ bool ate = m_script->on_chat_message(player->getName(),
+ wide_to_narrow(message));
+ // If script ate the message, don't proceed
+ if (ate)
+ return;
+
+ // Line to send to players
+ std::wstring line;
+ // Whether to send to the player that sent the line
+ bool send_to_sender_only = false;
+
+ // Commands are implemented in Lua, so only catch invalid
+ // commands that were not "eaten" and send an error back
+ if (message[0] == L'/') {
+ message = message.substr(1);
+ send_to_sender_only = true;
+ if (message.length() == 0)
+ line += L"-!- Empty command";
+ else
+ line += L"-!- Invalid command: " + str_split(message, L' ')[0];
+ }
+ else {
+ if (checkPriv(player->getName(), "shout")) {
+ line += L"<";
+ line += name;
+ line += L"> ";
+ line += message;
+ } else {
+ line += L"-!- You don't have permission to shout.";
+ send_to_sender_only = true;
+ }
+ }
+
+ if (line != L"")
+ {
+ /*
+ Send the message to sender
+ */
+ if (send_to_sender_only) {
+ SendChatMessage(pkt->getPeerId(), line);
+ }
+ /*
+ Send the message to others
+ */
+ else {
+ actionstream << "CHAT: " << wide_to_narrow(line)<<std::endl;
+
+ std::vector<u16> clients = m_clients.getClientIDs();
+
+ for (std::vector<u16>::iterator i = clients.begin();
+ i != clients.end(); ++i) {
+ if (*i != pkt->getPeerId())
+ SendChatMessage(*i, line);
+ }
+ }
+ }
+}
+
+void Server::handleCommand_Damage(NetworkPacket* pkt)
+{
+ u8 damage;
+
+ *pkt >> damage;
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ if (g_settings->getBool("enable_damage")) {
+ actionstream << player->getName() << " damaged by "
+ << (int)damage << " hp at " << PP(player->getPosition() / BS)
+ << std::endl;
+
+ playersao->setHP(playersao->getHP() - damage);
+ SendPlayerHPOrDie(playersao);
+ }
+}
+
+void Server::handleCommand_Breath(NetworkPacket* pkt)
+{
+ u16 breath;
+
+ *pkt >> breath;
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ /*
+ * If player is dead, we don't need to update the breath
+ * He is dead !
+ */
+ if (player->isDead()) {
+ verbosestream << "TOSERVER_BREATH: " << player->getName()
+ << " is dead. Ignoring packet";
+ return;
+ }
+
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ playersao->setBreath(breath);
+ SendPlayerBreath(pkt->getPeerId());
+}
+
+void Server::handleCommand_Password(NetworkPacket* pkt)
+{
+ if (pkt->getSize() != PASSWORD_SIZE * 2)
+ return;
+
+ std::string oldpwd;
+ std::string newpwd;
+
+ // Deny for clients using the new protocol
+ RemoteClient* client = getClient(pkt->getPeerId(), CS_Created);
+ if (client->net_proto_version >= 25) {
+ infostream << "Server::handleCommand_Password(): Denying change: "
+ << " Client protocol version for peer_id=" << pkt->getPeerId()
+ << " too new!" << std::endl;
+ return;
+ }
+
+ for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
+ char c = pkt->getChar(i);
+ if (c == 0)
+ break;
+ oldpwd += c;
+ }
+
+ for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) {
+ char c = pkt->getChar(PASSWORD_SIZE + i);
+ if (c == 0)
+ break;
+ newpwd += c;
+ }
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ if (!base64_is_valid(newpwd)) {
+ infostream<<"Server: " << player->getName() <<
+ " supplied invalid password hash" << std::endl;
+ // Wrong old password supplied!!
+ SendChatMessage(pkt->getPeerId(), L"Invalid new password hash supplied. Password NOT changed.");
+ return;
+ }
+
+ infostream << "Server: Client requests a password change from "
+ << "'" << oldpwd << "' to '" << newpwd << "'" << std::endl;
+
+ std::string playername = player->getName();
+
+ std::string checkpwd;
+ m_script->getAuth(playername, &checkpwd, NULL);
+
+ if (oldpwd != checkpwd) {
+ infostream << "Server: invalid old password" << std::endl;
+ // Wrong old password supplied!!
+ SendChatMessage(pkt->getPeerId(), L"Invalid old password supplied. Password NOT changed.");
+ return;
+ }
+
+ bool success = m_script->setPassword(playername, newpwd);
+ if (success) {
+ actionstream << player->getName() << " changes password" << std::endl;
+ SendChatMessage(pkt->getPeerId(), L"Password change successful.");
+ } else {
+ actionstream << player->getName() << " tries to change password but "
+ << "it fails" << std::endl;
+ SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable.");
+ }
+}
+
+void Server::handleCommand_PlayerItem(NetworkPacket* pkt)
+{
+ if (pkt->getSize() < 2)
+ return;
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ u16 item;
+
+ *pkt >> item;
+
+ playersao->setWieldIndex(item);
+}
+
+void Server::handleCommand_Respawn(NetworkPacket* pkt)
+{
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ if (!player->isDead())
+ return;
+
+ RespawnPlayer(pkt->getPeerId());
+
+ actionstream << player->getName() << " respawns at "
+ << PP(player->getPosition()/BS) << std::endl;
+
+ // ActiveObject is added to environment in AsyncRunStep after
+ // the previous addition has been successfully removed
+}
+
+void Server::handleCommand_Interact(NetworkPacket* pkt)
+{
+ std::string datastring(pkt->getString(0), pkt->getSize());
+ std::istringstream is(datastring, std::ios_base::binary);
+
+ /*
+ [0] u16 command
+ [2] u8 action
+ [3] u16 item
+ [5] u32 length of the next item
+ [9] serialized PointedThing
+ actions:
+ 0: start digging (from undersurface) or use
+ 1: stop digging (all parameters ignored)
+ 2: digging completed
+ 3: place block or item (to abovesurface)
+ 4: use item
+ */
+ u8 action = readU8(is);
+ u16 item_i = readU16(is);
+ std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
+ PointedThing pointed;
+ pointed.deSerialize(tmp_is);
+
+ verbosestream << "TOSERVER_INTERACT: action=" << (int)action << ", item="
+ << item_i << ", pointed=" << pointed.dump() << std::endl;
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ if (player->isDead()) {
+ verbosestream << "TOSERVER_INTERACT: " << player->getName()
+ << " is dead. Ignoring packet";
+ return;
+ }
+
+ v3f player_pos = playersao->getLastGoodPosition();
+
+ // Update wielded item
+ playersao->setWieldIndex(item_i);
+
+ // Get pointed to node (undefined if not POINTEDTYPE_NODE)
+ v3s16 p_under = pointed.node_undersurface;
+ v3s16 p_above = pointed.node_abovesurface;
+
+ // Get pointed to object (NULL if not POINTEDTYPE_OBJECT)
+ ServerActiveObject *pointed_object = NULL;
+ if (pointed.type == POINTEDTHING_OBJECT) {
+ pointed_object = m_env->getActiveObject(pointed.object_id);
+ if (pointed_object == NULL) {
+ verbosestream << "TOSERVER_INTERACT: "
+ "pointed object is NULL" << std::endl;
+ return;
+ }
+
+ }
+
+ v3f pointed_pos_under = player_pos;
+ v3f pointed_pos_above = player_pos;
+ if (pointed.type == POINTEDTHING_NODE) {
+ pointed_pos_under = intToFloat(p_under, BS);
+ pointed_pos_above = intToFloat(p_above, BS);
+ }
+ else if (pointed.type == POINTEDTHING_OBJECT) {
+ pointed_pos_under = pointed_object->getBasePosition();
+ pointed_pos_above = pointed_pos_under;
+ }
+
+ /*
+ Check that target is reasonably close
+ (only when digging or placing things)
+ */
+ if (action == 0 || action == 2 || action == 3) {
+ float d = player_pos.getDistanceFrom(pointed_pos_under);
+ float max_d = BS * 14; // Just some large enough value
+ if (d > max_d) {
+ actionstream << "Player " << player->getName()
+ << " tried to access " << pointed.dump()
+ << " from too far: "
+ << "d=" << d <<", max_d=" << max_d
+ << ". ignoring." << std::endl;
+ // Re-send block to revert change on client-side
+ RemoteClient *client = getClient(pkt->getPeerId());
+ v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
+ client->SetBlockNotSent(blockpos);
+ // Call callbacks
+ m_script->on_cheat(playersao, "interacted_too_far");
+ // Do nothing else
+ return;
+ }
+ }
+
+ /*
+ Make sure the player is allowed to do it
+ */
+ if (!checkPriv(player->getName(), "interact")) {
+ actionstream<<player->getName()<<" attempted to interact with "
+ <<pointed.dump()<<" without 'interact' privilege"
+ <<std::endl;
+ // Re-send block to revert change on client-side
+ RemoteClient *client = getClient(pkt->getPeerId());
+ // Digging completed -> under
+ if (action == 2) {
+ v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
+ client->SetBlockNotSent(blockpos);
+ }
+ // Placement -> above
+ if (action == 3) {
+ v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
+ client->SetBlockNotSent(blockpos);
+ }
+ return;
+ }
+
+ /*
+ If something goes wrong, this player is to blame
+ */
+ RollbackScopeActor rollback_scope(m_rollback,
+ std::string("player:")+player->getName());
+
+ /*
+ 0: start digging or punch object
+ */
+ if (action == 0) {
+ if (pointed.type == POINTEDTHING_NODE) {
+ /*
+ NOTE: This can be used in the future to check if
+ somebody is cheating, by checking the timing.
+ */
+ MapNode n(CONTENT_IGNORE);
+ bool pos_ok;
+ n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
+ if (pos_ok)
+ n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
+
+ if (!pos_ok) {
+ infostream << "Server: Not punching: Node not found."
+ << " Adding block to emerge queue."
+ << std::endl;
+ m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false);
+ }
+
+ if (n.getContent() != CONTENT_IGNORE)
+ m_script->node_on_punch(p_under, n, playersao, pointed);
+ // Cheat prevention
+ playersao->noCheatDigStart(p_under);
+ }
+ else if (pointed.type == POINTEDTHING_OBJECT) {
+ // Skip if object has been removed
+ if (pointed_object->m_removed)
+ return;
+
+ actionstream<<player->getName()<<" punches object "
+ <<pointed.object_id<<": "
+ <<pointed_object->getDescription()<<std::endl;
+
+ ItemStack punchitem = playersao->getWieldedItem();
+ ToolCapabilities toolcap =
+ punchitem.getToolCapabilities(m_itemdef);
+ v3f dir = (pointed_object->getBasePosition() -
+ (player->getPosition() + player->getEyeOffset())
+ ).normalize();
+ float time_from_last_punch =
+ playersao->resetTimeFromLastPunch();
+
+ s16 src_original_hp = pointed_object->getHP();
+ s16 dst_origin_hp = playersao->getHP();
+
+ pointed_object->punch(dir, &toolcap, playersao,
+ time_from_last_punch);
+
+ // If the object is a player and its HP changed
+ if (src_original_hp != pointed_object->getHP() &&
+ pointed_object->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
+ SendPlayerHPOrDie((PlayerSAO *)pointed_object);
+ }
+
+ // If the puncher is a player and its HP changed
+ if (dst_origin_hp != playersao->getHP())
+ SendPlayerHPOrDie(playersao);
+ }
+
+ } // action == 0
+
+ /*
+ 1: stop digging
+ */
+ else if (action == 1) {
+ } // action == 1
+
+ /*
+ 2: Digging completed
+ */
+ else if (action == 2) {
+ // Only digging of nodes
+ if (pointed.type == POINTEDTHING_NODE) {
+ bool pos_ok;
+ MapNode n = m_env->getMap().getNodeNoEx(p_under, &pos_ok);
+ if (!pos_ok) {
+ infostream << "Server: Not finishing digging: Node not found."
+ << " Adding block to emerge queue."
+ << std::endl;
+ m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false);
+ }
+
+ /* Cheat prevention */
+ bool is_valid_dig = true;
+ if (!isSingleplayer() && !g_settings->getBool("disable_anticheat")) {
+ v3s16 nocheat_p = playersao->getNoCheatDigPos();
+ float nocheat_t = playersao->getNoCheatDigTime();
+ playersao->noCheatDigEnd();
+ // If player didn't start digging this, ignore dig
+ if (nocheat_p != p_under) {
+ infostream << "Server: NoCheat: " << player->getName()
+ << " started digging "
+ << PP(nocheat_p) << " and completed digging "
+ << PP(p_under) << "; not digging." << std::endl;
+ is_valid_dig = false;
+ // Call callbacks
+ m_script->on_cheat(playersao, "finished_unknown_dig");
+ }
+ // Get player's wielded item
+ ItemStack playeritem;
+ InventoryList *mlist = playersao->getInventory()->getList("main");
+ if (mlist != NULL)
+ playeritem = mlist->getItem(playersao->getWieldIndex());
+ ToolCapabilities playeritem_toolcap =
+ playeritem.getToolCapabilities(m_itemdef);
+ // Get diggability and expected digging time
+ DigParams params = getDigParams(m_nodedef->get(n).groups,
+ &playeritem_toolcap);
+ // If can't dig, try hand
+ if (!params.diggable) {
+ const ItemDefinition &hand = m_itemdef->get("");
+ const ToolCapabilities *tp = hand.tool_capabilities;
+ if (tp)
+ params = getDigParams(m_nodedef->get(n).groups, tp);
+ }
+ // If can't dig, ignore dig
+ if (!params.diggable) {
+ infostream << "Server: NoCheat: " << player->getName()
+ << " completed digging " << PP(p_under)
+ << ", which is not diggable with tool. not digging."
+ << std::endl;
+ is_valid_dig = false;
+ // Call callbacks
+ m_script->on_cheat(playersao, "dug_unbreakable");
+ }
+ // Check digging time
+ // If already invalidated, we don't have to
+ if (!is_valid_dig) {
+ // Well not our problem then
+ }
+ // Clean and long dig
+ else if (params.time > 2.0 && nocheat_t * 1.2 > params.time) {
+ // All is good, but grab time from pool; don't care if
+ // it's actually available
+ playersao->getDigPool().grab(params.time);
+ }
+ // Short or laggy dig
+ // Try getting the time from pool
+ else if (playersao->getDigPool().grab(params.time)) {
+ // All is good
+ }
+ // Dig not possible
+ else {
+ infostream << "Server: NoCheat: " << player->getName()
+ << " completed digging " << PP(p_under)
+ << "too fast; not digging." << std::endl;
+ is_valid_dig = false;
+ // Call callbacks
+ m_script->on_cheat(playersao, "dug_too_fast");
+ }
+ }
+
+ /* Actually dig node */
+
+ if (is_valid_dig && n.getContent() != CONTENT_IGNORE)
+ m_script->node_on_dig(p_under, n, playersao);
+
+ v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
+ RemoteClient *client = getClient(pkt->getPeerId());
+ // Send unusual result (that is, node not being removed)
+ if (m_env->getMap().getNodeNoEx(p_under).getContent() != CONTENT_AIR) {
+ // Re-send block to revert change on client-side
+ client->SetBlockNotSent(blockpos);
+ }
+ else {
+ client->ResendBlockIfOnWire(blockpos);
+ }
+ }
+ } // action == 2
+
+ /*
+ 3: place block or right-click object
+ */
+ else if (action == 3) {
+ ItemStack item = playersao->getWieldedItem();
+
+ // Reset build time counter
+ if (pointed.type == POINTEDTHING_NODE &&
+ item.getDefinition(m_itemdef).type == ITEM_NODE)
+ getClient(pkt->getPeerId())->m_time_from_building = 0.0;
+
+ if (pointed.type == POINTEDTHING_OBJECT) {
+ // Right click object
+
+ // Skip if object has been removed
+ if (pointed_object->m_removed)
+ return;
+
+ actionstream << player->getName() << " right-clicks object "
+ << pointed.object_id << ": "
+ << pointed_object->getDescription() << std::endl;
+
+ // Do stuff
+ pointed_object->rightClick(playersao);
+ }
+ else if (m_script->item_OnPlace(
+ item, playersao, pointed)) {
+ // Placement was handled in lua
+
+ // Apply returned ItemStack
+ if (playersao->setWieldedItem(item)) {
+ SendInventory(playersao);
+ }
+ }
+
+ // If item has node placement prediction, always send the
+ // blocks to make sure the client knows what exactly happened
+ RemoteClient *client = getClient(pkt->getPeerId());
+ v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
+ v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
+ if (item.getDefinition(m_itemdef).node_placement_prediction != "") {
+ client->SetBlockNotSent(blockpos);
+ if (blockpos2 != blockpos) {
+ client->SetBlockNotSent(blockpos2);
+ }
+ }
+ else {
+ client->ResendBlockIfOnWire(blockpos);
+ if (blockpos2 != blockpos) {
+ client->ResendBlockIfOnWire(blockpos2);
+ }
+ }
+ } // action == 3
+
+ /*
+ 4: use
+ */
+ else if (action == 4) {
+ ItemStack item = playersao->getWieldedItem();
+
+ actionstream << player->getName() << " uses " << item.name
+ << ", pointing at " << pointed.dump() << std::endl;
+
+ if (m_script->item_OnUse(
+ item, playersao, pointed)) {
+ // Apply returned ItemStack
+ if (playersao->setWieldedItem(item)) {
+ SendInventory(playersao);
+ }
+ }
+
+ } // action == 4
+
+
+ /*
+ Catch invalid actions
+ */
+ else {
+ infostream << "WARNING: Server: Invalid action "
+ << action << std::endl;
+ }
+}
+
+void Server::handleCommand_RemovedSounds(NetworkPacket* pkt)
+{
+ u16 num;
+ *pkt >> num;
+ for (u16 k = 0; k < num; k++) {
+ s32 id;
+
+ *pkt >> id;
+
+ std::map<s32, ServerPlayingSound>::iterator i =
+ m_playing_sounds.find(id);
+
+ if (i == m_playing_sounds.end())
+ continue;
+
+ ServerPlayingSound &psound = i->second;
+ psound.clients.erase(pkt->getPeerId());
+ if (psound.clients.empty())
+ m_playing_sounds.erase(i++);
+ }
+}
+
+void Server::handleCommand_NodeMetaFields(NetworkPacket* pkt)
+{
+ v3s16 p;
+ std::string formname;
+ u16 num;
+
+ *pkt >> p >> formname >> num;
+
+ StringMap fields;
+ for (u16 k = 0; k < num; k++) {
+ std::string fieldname;
+ *pkt >> fieldname;
+ fields[fieldname] = pkt->readLongString();
+ }
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ // If something goes wrong, this player is to blame
+ RollbackScopeActor rollback_scope(m_rollback,
+ std::string("player:")+player->getName());
+
+ // Check the target node for rollback data; leave others unnoticed
+ RollbackNode rn_old(&m_env->getMap(), p, this);
+
+ m_script->node_on_receive_fields(p, formname, fields, playersao);
+
+ // Report rollback data
+ RollbackNode rn_new(&m_env->getMap(), p, this);
+ if (rollback() && rn_new != rn_old) {
+ RollbackAction action;
+ action.setSetNode(p, rn_old, rn_new);
+ rollback()->reportAction(action);
+ }
+}
+
+void Server::handleCommand_InventoryFields(NetworkPacket* pkt)
+{
+ std::string formname;
+ u16 num;
+
+ *pkt >> formname >> num;
+
+ StringMap fields;
+ for (u16 k = 0; k < num; k++) {
+ std::string fieldname;
+ *pkt >> fieldname;
+ fields[fieldname] = pkt->readLongString();
+ }
+
+ Player *player = m_env->getPlayer(pkt->getPeerId());
+ if (player == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ PlayerSAO *playersao = player->getPlayerSAO();
+ if (playersao == NULL) {
+ errorstream << "Server::ProcessData(): Canceling: "
+ "No player object for peer_id=" << pkt->getPeerId()
+ << " disconnecting peer!" << std::endl;
+ m_con.DisconnectPeer(pkt->getPeerId());
+ return;
+ }
+
+ m_script->on_playerReceiveFields(playersao, formname, fields);
+}
+
+void Server::handleCommand_FirstSrp(NetworkPacket* pkt)
+{
+ RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid);
+ ClientState cstate = client->getState();
+
+ std::string playername = client->getName();
+
+ std::string salt;
+ std::string verification_key;
+
+ std::string addr_s = getPeerAddress(pkt->getPeerId()).serializeString();
+ u8 is_empty;
+
+ *pkt >> salt >> verification_key >> is_empty;
+
+ verbosestream << "Server: Got TOSERVER_FIRST_SRP from " << addr_s
+ << ", with is_empty= " << is_empty << std::endl;
+
+ // Either this packet is sent because the user is new or to change the password
+ if (cstate == CS_HelloSent) {
+ if (!client->isMechAllowed(AUTH_MECHANISM_FIRST_SRP)) {
+ actionstream << "Server: Client from " << addr_s
+ << " tried to set password without being "
+ << "authenticated, or the username being new." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
+ return;
+ }
+
+ if (!isSingleplayer() &&
+ g_settings->getBool("disallow_empty_password") &&
+ is_empty == 1) {
+ actionstream << "Server: " << playername
+ << " supplied empty password from " << addr_s << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_EMPTY_PASSWORD);
+ return;
+ }
+
+ std::string initial_ver_key;
+
+ initial_ver_key = encodeSRPVerifier(verification_key, salt);
+ m_script->createAuth(playername, initial_ver_key);
+
+ acceptAuth(pkt->getPeerId(), false);
+ } else {
+ if (cstate < CS_SudoMode) {
+ infostream << "Server::ProcessData(): Ignoring TOSERVER_FIRST_SRP from "
+ << addr_s << ": " << "Client has wrong state " << cstate << "."
+ << std::endl;
+ return;
+ }
+ m_clients.event(pkt->getPeerId(), CSE_SudoLeave);
+ std::string pw_db_field = encodeSRPVerifier(verification_key, salt);
+ bool success = m_script->setPassword(playername, pw_db_field);
+ if (success) {
+ actionstream << playername << " changes password" << std::endl;
+ SendChatMessage(pkt->getPeerId(), L"Password change successful.");
+ } else {
+ actionstream << playername << " tries to change password but "
+ << "it fails" << std::endl;
+ SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable.");
+ }
+ }
+}
+
+void Server::handleCommand_SrpBytesA(NetworkPacket* pkt)
+{
+ RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid);
+ ClientState cstate = client->getState();
+
+ bool wantSudo = (cstate == CS_Active);
+
+ if (!((cstate == CS_HelloSent) || (cstate == CS_Active))) {
+ actionstream << "Server: got SRP _A packet in wrong state "
+ << cstate << " from "
+ << getPeerAddress(pkt->getPeerId()).serializeString()
+ << ". Ignoring." << std::endl;
+ return;
+ }
+
+ if (client->chosen_mech != AUTH_MECHANISM_NONE) {
+ actionstream << "Server: got SRP _A packet, while auth"
+ << "is already going on with mech " << client->chosen_mech
+ << " from " << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " (wantSudo=" << wantSudo << "). Ignoring." << std::endl;
+ if (wantSudo) {
+ DenySudoAccess(pkt->getPeerId());
+ return;
+ } else {
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
+ return;
+ }
+ }
+
+ std::string bytes_A;
+ u8 based_on;
+ *pkt >> bytes_A >> based_on;
+
+ infostream << "Server: TOSERVER_SRP_BYTES_A received with "
+ << "based_on=" << int(based_on) << " and len_A="
+ << bytes_A.length() << "." << std::endl;
+
+ AuthMechanism chosen = (based_on == 0) ?
+ AUTH_MECHANISM_LEGACY_PASSWORD : AUTH_MECHANISM_SRP;
+
+ if (wantSudo) {
+ if (!client->isSudoMechAllowed(chosen)) {
+ actionstream << "Server: Player \"" << client->getName()
+ << "\" at " << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " tried to change password using unallowed mech "
+ << chosen << "." << std::endl;
+ DenySudoAccess(pkt->getPeerId());
+ return;
+ }
+ } else {
+ if (!client->isMechAllowed(chosen)) {
+ actionstream << "Server: Client tried to authenticate from "
+ << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " using unallowed mech " << chosen << "." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
+ return;
+ }
+ }
+
+ client->chosen_mech = chosen;
+
+ std::string bytes_s;
+ std::string bytes_v;
+
+ if (based_on == 0) {
+ char *p_bytes_s = 0;
+ size_t len_s = 0;
+ char *p_bytes_v = 0;
+ size_t len_v = 0;
+ getSRPVerifier(client->getName(), client->enc_pwd,
+ &p_bytes_s, &len_s,
+ &p_bytes_v, &len_v);
+ bytes_s = std::string(p_bytes_s, len_s);
+ bytes_v = std::string(p_bytes_v, len_v);
+ free(p_bytes_s);
+ free(p_bytes_v);
+ } else if (!decodeSRPVerifier(client->enc_pwd, &bytes_s, &bytes_v)) {
+ // Non-base64 errors should have been catched in the init handler
+ actionstream << "Server: User " << client->getName()
+ << " tried to log in, but srp verifier field"
+ << " was invalid (most likely invalid base64)." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
+ return;
+ }
+
+ char *bytes_B = 0;
+ size_t len_B = 0;
+
+ client->auth_data = srp_verifier_new(SRP_SHA256, SRP_NG_2048,
+ client->getName().c_str(),
+ (const unsigned char *) bytes_s.c_str(), bytes_s.size(),
+ (const unsigned char *) bytes_v.c_str(), bytes_v.size(),
+ (const unsigned char *) bytes_A.c_str(), bytes_A.size(),
+ NULL, 0,
+ (unsigned char **) &bytes_B, &len_B, NULL, NULL);
+
+ if (!bytes_B) {
+ actionstream << "Server: User " << client->getName()
+ << " tried to log in, SRP-6a safety check violated in _A handler."
+ << std::endl;
+ if (wantSudo) {
+ DenySudoAccess(pkt->getPeerId());
+ return;
+ } else {
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
+ return;
+ }
+ }
+
+ NetworkPacket resp_pkt(TOCLIENT_SRP_BYTES_S_B, 0, pkt->getPeerId());
+ resp_pkt << bytes_s << std::string(bytes_B, len_B);
+ Send(&resp_pkt);
+}
+
+void Server::handleCommand_SrpBytesM(NetworkPacket* pkt)
+{
+ RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid);
+ ClientState cstate = client->getState();
+
+ bool wantSudo = (cstate == CS_Active);
+
+ verbosestream << "Server: Recieved TOCLIENT_SRP_BYTES_M." << std::endl;
+
+ if (!((cstate == CS_HelloSent) || (cstate == CS_Active))) {
+ actionstream << "Server: got SRP _M packet in wrong state "
+ << cstate << " from "
+ << getPeerAddress(pkt->getPeerId()).serializeString()
+ << ". Ignoring." << std::endl;
+ return;
+ }
+
+ if ((client->chosen_mech != AUTH_MECHANISM_SRP)
+ && (client->chosen_mech != AUTH_MECHANISM_LEGACY_PASSWORD)) {
+ actionstream << "Server: got SRP _M packet, while auth"
+ << "is going on with mech " << client->chosen_mech
+ << " from " << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " (wantSudo=" << wantSudo << "). Denying." << std::endl;
+ if (wantSudo) {
+ DenySudoAccess(pkt->getPeerId());
+ return;
+ } else {
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
+ return;
+ }
+ }
+
+ std::string bytes_M;
+ *pkt >> bytes_M;
+
+ if (srp_verifier_get_session_key_length((SRPVerifier *) client->auth_data)
+ != bytes_M.size()) {
+ actionstream << "Server: User " << client->getName()
+ << " at " << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " sent bytes_M with invalid length " << bytes_M.size() << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA);
+ return;
+ }
+
+ unsigned char *bytes_HAMK = 0;
+
+ srp_verifier_verify_session((SRPVerifier *) client->auth_data,
+ (unsigned char *)bytes_M.c_str(), &bytes_HAMK);
+
+ if (!bytes_HAMK) {
+ if (wantSudo) {
+ actionstream << "Server: User " << client->getName()
+ << " at " << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " tried to change their password, but supplied wrong"
+ << " (SRP) password for authentication." << std::endl;
+ DenySudoAccess(pkt->getPeerId());
+ return;
+ } else {
+ actionstream << "Server: User " << client->getName()
+ << " at " << getPeerAddress(pkt->getPeerId()).serializeString()
+ << " supplied wrong (SRP) password from address "
+ << getPeerAddress(pkt->getPeerId()).serializeString()
+ << "." << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_PASSWORD);
+ return;
+ }
+ }
+
+ if (client->create_player_on_auth_success) {
+ std::string playername = client->getName();
+ m_script->createAuth(playername, client->enc_pwd);
+
+ std::string checkpwd; // not used, but needed for passing something
+ if (!m_script->getAuth(playername, &checkpwd, NULL)) {
+ actionstream << "Server: " << playername << " cannot be authenticated"
+ << " (auth handler does not work?)" << std::endl;
+ DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL);
+ return;
+ }
+ client->create_player_on_auth_success = false;
+ }
+
+ acceptAuth(pkt->getPeerId(), wantSudo);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 15:19:34 +0000