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minetest/src/server.cpp

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/*
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.
*/
#include "server.h"
#include <iostream>
#include <queue>
#include <algorithm>
#include "network/connection.h"
#include "network/networkprotocol.h"
#include "network/serveropcodes.h"
#include "ban.h"
#include "environment.h"
#include "map.h"
#include "threading/mutex_auto_lock.h"
#include "constants.h"
#include "voxel.h"
#include "config.h"
#include "version.h"
#include "filesys.h"
#include "mapblock.h"
#include "server/serveractiveobject.h"
#include "settings.h"
#include "profiler.h"
#include "log.h"
#include "scripting_server.h"
#include "nodedef.h"
#include "itemdef.h"
#include "craftdef.h"
#include "emerge.h"
#include "mapgen/mapgen.h"
#include "mapgen/mg_biome.h"
#include "content_mapnode.h"
#include "content_nodemeta.h"
#include "content/mods.h"
#include "modchannels.h"
#include "serverlist.h"
#include "util/string.h"
#include "rollback.h"
#include "util/serialize.h"
#include "util/thread.h"
#include "defaultsettings.h"
#include "server/mods.h"
#include "util/base64.h"
#include "util/sha1.h"
#include "util/hex.h"
#include "database/database.h"
#include "chatmessage.h"
#include "chat_interface.h"
#include "remoteplayer.h"
#include "server/player_sao.h"
class ClientNotFoundException : public BaseException
{
public:
ClientNotFoundException(const char *s):
BaseException(s)
{}
};
class ServerThread : public Thread
{
public:
ServerThread(Server *server):
Thread("Server"),
m_server(server)
{}
void *run();
private:
Server *m_server;
};
void *ServerThread::run()
{
BEGIN_DEBUG_EXCEPTION_HANDLER
/*
* The real business of the server happens on the ServerThread.
* How this works:
* AsyncRunStep() runs an actual server step as soon as enough time has
* passed (dedicated_server_loop keeps track of that).
* Receive() blocks at least(!) 30ms waiting for a packet (so this loop
* doesn't busy wait) and will process any remaining packets.
*/
m_server->AsyncRunStep(true);
while (!stopRequested()) {
try {
m_server->AsyncRunStep();
m_server->Receive();
} catch (con::PeerNotFoundException &e) {
infostream<<"Server: PeerNotFoundException"<<std::endl;
} catch (ClientNotFoundException &e) {
} catch (con::ConnectionBindFailed &e) {
m_server->setAsyncFatalError(e.what());
} catch (LuaError &e) {
m_server->setAsyncFatalError(
"ServerThread::run Lua: " + std::string(e.what()));
}
}
END_DEBUG_EXCEPTION_HANDLER
return nullptr;
}
v3f ServerSoundParams::getPos(ServerEnvironment *env, bool *pos_exists) const
{
if(pos_exists) *pos_exists = false;
switch(type){
case SSP_LOCAL:
return v3f(0,0,0);
case SSP_POSITIONAL:
if(pos_exists) *pos_exists = true;
return pos;
case SSP_OBJECT: {
if(object == 0)
return v3f(0,0,0);
ServerActiveObject *sao = env->getActiveObject(object);
if(!sao)
return v3f(0,0,0);
if(pos_exists) *pos_exists = true;
return sao->getBasePosition(); }
}
return v3f(0,0,0);
}
void Server::ShutdownState::reset()
{
m_timer = 0.0f;
message.clear();
should_reconnect = false;
is_requested = false;
}
void Server::ShutdownState::trigger(float delay, const std::string &msg, bool reconnect)
{
m_timer = delay;
message = msg;
should_reconnect = reconnect;
}
void Server::ShutdownState::tick(float dtime, Server *server)
{
if (m_timer <= 0.0f)
return;
// Timed shutdown
static const float shutdown_msg_times[] =
{
1, 2, 3, 4, 5, 10, 20, 40, 60, 120, 180, 300, 600, 1200, 1800, 3600
};
// Automated messages
if (m_timer < shutdown_msg_times[ARRLEN(shutdown_msg_times) - 1]) {
for (float t : shutdown_msg_times) {
// If shutdown timer matches an automessage, shot it
if (m_timer > t && m_timer - dtime < t) {
std::wstring periodicMsg = getShutdownTimerMessage();
infostream << wide_to_utf8(periodicMsg).c_str() << std::endl;
server->SendChatMessage(PEER_ID_INEXISTENT, periodicMsg);
break;
}
}
}
m_timer -= dtime;
if (m_timer < 0.0f) {
m_timer = 0.0f;
is_requested = true;
}
}
std::wstring Server::ShutdownState::getShutdownTimerMessage() const
{
std::wstringstream ws;
ws << L"*** Server shutting down in "
<< duration_to_string(myround(m_timer)).c_str() << ".";
return ws.str();
}
/*
Server
*/
Server::Server(
const std::string &path_world,
const SubgameSpec &gamespec,
bool simple_singleplayer_mode,
Address bind_addr,
bool dedicated,
ChatInterface *iface
):
m_bind_addr(bind_addr),
m_path_world(path_world),
m_gamespec(gamespec),
m_simple_singleplayer_mode(simple_singleplayer_mode),
m_dedicated(dedicated),
m_async_fatal_error(""),
m_con(std::make_shared<con::Connection>(PROTOCOL_ID,
512,
CONNECTION_TIMEOUT,
m_bind_addr.isIPv6(),
this)),
m_itemdef(createItemDefManager()),
m_nodedef(createNodeDefManager()),
m_craftdef(createCraftDefManager()),
m_thread(new ServerThread(this)),
m_uptime(0),
m_clients(m_con),
m_admin_chat(iface),
m_modchannel_mgr(new ModChannelMgr())
{
m_lag = g_settings->getFloat("dedicated_server_step");
if (m_path_world.empty())
throw ServerError("Supplied empty world path");
if (!gamespec.isValid())
throw ServerError("Supplied invalid gamespec");
}
Server::~Server()
{
// Send shutdown message
SendChatMessage(PEER_ID_INEXISTENT, ChatMessage(CHATMESSAGE_TYPE_ANNOUNCE,
L"*** Server shutting down"));
if (m_env) {
MutexAutoLock envlock(m_env_mutex);
infostream << "Server: Saving players" << std::endl;
m_env->saveLoadedPlayers();
infostream << "Server: Kicking players" << std::endl;
std::string kick_msg;
bool reconnect = false;
if (isShutdownRequested()) {
reconnect = m_shutdown_state.should_reconnect;
kick_msg = m_shutdown_state.message;
}
if (kick_msg.empty()) {
kick_msg = g_settings->get("kick_msg_shutdown");
}
m_env->saveLoadedPlayers(true);
m_env->kickAllPlayers(SERVER_ACCESSDENIED_SHUTDOWN,
kick_msg, reconnect);
}
actionstream << "Server: Shutting down" << std::endl;
// Do this before stopping the server in case mapgen callbacks need to access
// server-controlled resources (like ModStorages). Also do them before
// shutdown callbacks since they may modify state that is finalized in a
// callback.
if (m_emerge)
m_emerge->stopThreads();
if (m_env) {
MutexAutoLock envlock(m_env_mutex);
// Execute script shutdown hooks
infostream << "Executing shutdown hooks" << std::endl;
m_script->on_shutdown();
infostream << "Server: Saving environment metadata" << std::endl;
m_env->saveMeta();
}
// Stop threads
if (m_thread) {
stop();
delete m_thread;
}
// Delete things in the reverse order of creation
delete m_emerge;
delete m_env;
delete m_rollback;
delete m_banmanager;
delete m_itemdef;
delete m_nodedef;
delete m_craftdef;
// Deinitialize scripting
infostream << "Server: Deinitializing scripting" << std::endl;
delete m_script;
// Delete detached inventories
for (auto &detached_inventory : m_detached_inventories) {
delete detached_inventory.second;
}
while (!m_unsent_map_edit_queue.empty()) {
delete m_unsent_map_edit_queue.front();
m_unsent_map_edit_queue.pop();
}
}
void Server::init()
{
infostream << "Server created for gameid \"" << m_gamespec.id << "\"";
if (m_simple_singleplayer_mode)
infostream << " in simple singleplayer mode" << std::endl;
else
infostream << std::endl;
infostream << "- world: " << m_path_world << std::endl;
infostream << "- game: " << m_gamespec.path << std::endl;
// Create world if it doesn't exist
if (!loadGameConfAndInitWorld(m_path_world, m_gamespec))
throw ServerError("Failed to initialize world");
// Create emerge manager
m_emerge = new EmergeManager(this);
// Create ban manager
std::string ban_path = m_path_world + DIR_DELIM "ipban.txt";
m_banmanager = new BanManager(ban_path);
m_modmgr = std::unique_ptr<ServerModManager>(new ServerModManager(m_path_world));
std::vector<ModSpec> unsatisfied_mods = m_modmgr->getUnsatisfiedMods();
// complain about mods with unsatisfied dependencies
if (!m_modmgr->isConsistent()) {
m_modmgr->printUnsatisfiedModsError();
}
//lock environment
MutexAutoLock envlock(m_env_mutex);
// Create the Map (loads map_meta.txt, overriding configured mapgen params)
ServerMap *servermap = new ServerMap(m_path_world, this, m_emerge);
// Initialize scripting
infostream << "Server: Initializing Lua" << std::endl;
m_script = new ServerScripting(this);
m_script->loadMod(getBuiltinLuaPath() + DIR_DELIM "init.lua", BUILTIN_MOD_NAME);
m_modmgr->loadMods(m_script);
// Read Textures and calculate sha1 sums
fillMediaCache();
// Apply item aliases in the node definition manager
m_nodedef->updateAliases(m_itemdef);
// Apply texture overrides from texturepack/override.txt
std::vector<std::string> paths;
fs::GetRecursiveDirs(paths, g_settings->get("texture_path"));
fs::GetRecursiveDirs(paths, m_gamespec.path + DIR_DELIM + "textures");
for (const std::string &path : paths) {
TextureOverrideSource override_source(path + DIR_DELIM + "override.txt");
m_nodedef->applyTextureOverrides(override_source.getNodeTileOverrides());
m_itemdef->applyTextureOverrides(override_source.getItemTextureOverrides());
}
m_nodedef->setNodeRegistrationStatus(true);
// Perform pending node name resolutions
m_nodedef->runNodeResolveCallbacks();
// unmap node names for connected nodeboxes
m_nodedef->mapNodeboxConnections();
// init the recipe hashes to speed up crafting
m_craftdef->initHashes(this);
// Initialize Environment
m_env = new ServerEnvironment(servermap, m_script, this, m_path_world);
m_clients.setEnv(m_env);
if (!servermap->settings_mgr.makeMapgenParams())
FATAL_ERROR("Couldn't create any mapgen type");
// Initialize mapgens
m_emerge->initMapgens(servermap->getMapgenParams());
if (g_settings->getBool("enable_rollback_recording")) {
// Create rollback manager
m_rollback = new RollbackManager(m_path_world, this);
}
// Give environment reference to scripting api
m_script->initializeEnvironment(m_env);
// Register us to receive map edit events
servermap->addEventReceiver(this);
m_env->loadMeta();
m_liquid_transform_every = g_settings->getFloat("liquid_update");
m_max_chatmessage_length = g_settings->getU16("chat_message_max_size");
m_csm_restriction_flags = g_settings->getU64("csm_restriction_flags");
m_csm_restriction_noderange = g_settings->getU32("csm_restriction_noderange");
}
void Server::start()
{
infostream << "Starting server on " << m_bind_addr.serializeString()
<< "..." << std::endl;
// Stop thread if already running
m_thread->stop();
// Initialize connection
m_con->SetTimeoutMs(30);
m_con->Serve(m_bind_addr);
// Start thread
m_thread->start();
// ASCII art for the win!
std::cerr
<< " .__ __ __ " << std::endl
<< " _____ |__| ____ _____/ |_ ____ _______/ |_ " << std::endl
<< " / \\| |/ \\_/ __ \\ __\\/ __ \\ / ___/\\ __\\" << std::endl
<< "| Y Y \\ | | \\ ___/| | \\ ___/ \\___ \\ | | " << std::endl
<< "|__|_| /__|___| /\\___ >__| \\___ >____ > |__| " << std::endl
<< " \\/ \\/ \\/ \\/ \\/ " << std::endl;
actionstream << "World at [" << m_path_world << "]" << std::endl;
actionstream << "Server for gameid=\"" << m_gamespec.id
<< "\" listening on " << m_bind_addr.serializeString() << ":"
<< m_bind_addr.getPort() << "." << std::endl;
}
void Server::stop()
{
infostream<<"Server: Stopping and waiting threads"<<std::endl;
// Stop threads (set run=false first so both start stopping)
m_thread->stop();
//m_emergethread.setRun(false);
m_thread->wait();
//m_emergethread.stop();
infostream<<"Server: Threads stopped"<<std::endl;
}
void Server::step(float dtime)
{
// Limit a bit
if (dtime > 2.0)
dtime = 2.0;
{
MutexAutoLock lock(m_step_dtime_mutex);
m_step_dtime += dtime;
}
// Throw if fatal error occurred in thread
std::string async_err = m_async_fatal_error.get();
if (!async_err.empty()) {
if (!m_simple_singleplayer_mode) {
m_env->kickAllPlayers(SERVER_ACCESSDENIED_CRASH,
g_settings->get("kick_msg_crash"),
g_settings->getBool("ask_reconnect_on_crash"));
}
throw ServerError("AsyncErr: " + async_err);
}
}
void Server::AsyncRunStep(bool initial_step)
{
float dtime;
{
MutexAutoLock lock1(m_step_dtime_mutex);
dtime = m_step_dtime;
}
{
// Send blocks to clients
SendBlocks(dtime);
}
if((dtime < 0.001) && !initial_step)
return;
ScopeProfiler sp(g_profiler, "Server::AsyncRunStep()", SPT_AVG);
{
MutexAutoLock lock1(m_step_dtime_mutex);
m_step_dtime -= dtime;
}
/*
Update uptime
*/
{
m_uptime.set(m_uptime.get() + dtime);
}
handlePeerChanges();
/*
Update time of day and overall game time
*/
m_env->setTimeOfDaySpeed(g_settings->getFloat("time_speed"));
/*
Send to clients at constant intervals
*/
m_time_of_day_send_timer -= dtime;
if(m_time_of_day_send_timer < 0.0) {
m_time_of_day_send_timer = g_settings->getFloat("time_send_interval");
u16 time = m_env->getTimeOfDay();
float time_speed = g_settings->getFloat("time_speed");
SendTimeOfDay(PEER_ID_INEXISTENT, time, time_speed);
}
{
MutexAutoLock lock(m_env_mutex);
// Figure out and report maximum lag to environment
float max_lag = m_env->getMaxLagEstimate();
max_lag *= 0.9998; // Decrease slowly (about half per 5 minutes)
if(dtime > max_lag){
if(dtime > 0.1 && dtime > max_lag * 2.0)
infostream<<"Server: Maximum lag peaked to "<<dtime
<<" s"<<std::endl;
max_lag = dtime;
}
m_env->reportMaxLagEstimate(max_lag);
// Step environment
m_env->step(dtime);
}
static const float map_timer_and_unload_dtime = 2.92;
if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
{
MutexAutoLock lock(m_env_mutex);
// Run Map's timers and unload unused data
ScopeProfiler sp(g_profiler, "Server: map timer and unload");
m_env->getMap().timerUpdate(map_timer_and_unload_dtime,
g_settings->getFloat("server_unload_unused_data_timeout"),
U32_MAX);
}
/*
Listen to the admin chat, if available
*/
if (m_admin_chat) {
if (!m_admin_chat->command_queue.empty()) {
MutexAutoLock lock(m_env_mutex);
while (!m_admin_chat->command_queue.empty()) {
ChatEvent *evt = m_admin_chat->command_queue.pop_frontNoEx();
handleChatInterfaceEvent(evt);
delete evt;
}
}
m_admin_chat->outgoing_queue.push_back(
new ChatEventTimeInfo(m_env->getGameTime(), m_env->getTimeOfDay()));
}
/*
Do background stuff
*/
/* Transform liquids */
m_liquid_transform_timer += dtime;
if(m_liquid_transform_timer >= m_liquid_transform_every)
{
m_liquid_transform_timer -= m_liquid_transform_every;
MutexAutoLock lock(m_env_mutex);
ScopeProfiler sp(g_profiler, "Server: liquid transform");
std::map<v3s16, MapBlock*> modified_blocks;
m_env->getMap().transformLiquids(modified_blocks, m_env);
/*
Set the modified blocks unsent for all the clients
*/
if (!modified_blocks.empty()) {
SetBlocksNotSent(modified_blocks);
}
}
m_clients.step(dtime);
m_lag += (m_lag > dtime ? -1 : 1) * dtime/100;
#if USE_CURL
// send masterserver announce
{
float &counter = m_masterserver_timer;
if (!isSingleplayer() && (!counter || counter >= 300.0) &&
g_settings->getBool("server_announce")) {
ServerList::sendAnnounce(counter ? ServerList::AA_UPDATE :
ServerList::AA_START,
m_bind_addr.getPort(),
m_clients.getPlayerNames(),
m_uptime.get(),
m_env->getGameTime(),
m_lag,
m_gamespec.id,
Mapgen::getMapgenName(m_emerge->mgparams->mgtype),
m_modmgr->getMods(),
m_dedicated);
counter = 0.01;
}
counter += dtime;
}
#endif
/*
Check added and deleted active objects
*/
{
//infostream<<"Server: Checking added and deleted active objects"<<std::endl;
MutexAutoLock envlock(m_env_mutex);
m_clients.lock();
const RemoteClientMap &clients = m_clients.getClientList();
ScopeProfiler sp(g_profiler, "Server: update objects within range");
for (const auto &client_it : clients) {
RemoteClient *client = client_it.second;
if (client->getState() < CS_DefinitionsSent)
continue;
// This can happen if the client times out somehow
if (!m_env->getPlayer(client->peer_id))
continue;
PlayerSAO *playersao = getPlayerSAO(client->peer_id);
if (!playersao)
continue;
SendActiveObjectRemoveAdd(client, playersao);
}
m_clients.unlock();
// Save mod storages if modified
m_mod_storage_save_timer -= dtime;
if (m_mod_storage_save_timer <= 0.0f) {
m_mod_storage_save_timer = g_settings->getFloat("server_map_save_interval");
int n = 0;
for (std::unordered_map<std::string, ModMetadata *>::const_iterator
it = m_mod_storages.begin(); it != m_mod_storages.end(); ++it) {
if (it->second->isModified()) {
it->second->save(getModStoragePath());
n++;
}
}
if (n > 0)
infostream << "Saved " << n << " modified mod storages." << std::endl;
}
}
/*
Send object messages
*/
{
MutexAutoLock envlock(m_env_mutex);
ScopeProfiler sp(g_profiler, "Server: send SAO messages");
// Key = object id
// Value = data sent by object
std::unordered_map<u16, std::vector<ActiveObjectMessage>*> buffered_messages;
// Get active object messages from environment
for(;;) {
ActiveObjectMessage aom = m_env->getActiveObjectMessage();
if (aom.id == 0)
break;
std::vector<ActiveObjectMessage>* message_list = nullptr;
std::unordered_map<u16, std::vector<ActiveObjectMessage>* >::iterator n;
n = buffered_messages.find(aom.id);
if (n == buffered_messages.end()) {
message_list = new std::vector<ActiveObjectMessage>;
buffered_messages[aom.id] = message_list;
}
else {
message_list = n->second;
}
message_list->push_back(aom);
}
m_clients.lock();
const RemoteClientMap &clients = m_clients.getClientList();
// Route data to every client
for (const auto &client_it : clients) {
RemoteClient *client = client_it.second;
PlayerSAO *player = getPlayerSAO(client->peer_id);
std::string reliable_data;
std::string unreliable_data;
// Go through all objects in message buffer
for (const auto &buffered_message : buffered_messages) {
// If object does not exist or is not known by client, skip it
u16 id = buffered_message.first;
ServerActiveObject *sao = m_env->getActiveObject(id);
if (!sao || client->m_known_objects.find(id) == client->m_known_objects.end())
continue;
// Get message list of object
std::vector<ActiveObjectMessage>* list = buffered_message.second;
// Go through every message
for (const ActiveObjectMessage &aom : *list) {
// Send position updates to players who do not see the attachment
if (aom.datastring[0] == AO_CMD_UPDATE_POSITION) {
if (sao->getId() == player->getId())
continue;
// Do not send position updates for attached players
// as long the parent is known to the client
ServerActiveObject *parent = sao->getParent();
if (parent && client->m_known_objects.find(parent->getId()) !=
client->m_known_objects.end())
continue;
}
// Compose the full new data with header
std::string new_data;
// Add object id
char buf[2];
writeU16((u8*)&buf[0], aom.id);
new_data.append(buf, 2);
// Add data
new_data += serializeString(aom.datastring);
// Add data to buffer
if (aom.reliable)
reliable_data += new_data;
else
unreliable_data += new_data;
}
}
/*
reliable_data and unreliable_data are now ready.
Send them.
*/
if (!reliable_data.empty()) {
SendActiveObjectMessages(client->peer_id, reliable_data);
}
if (!unreliable_data.empty()) {
SendActiveObjectMessages(client->peer_id, unreliable_data, false);
}
}
m_clients.unlock();
// Clear buffered_messages
for (auto &buffered_message : buffered_messages) {
delete buffered_message.second;
}
}
/*
Send queued-for-sending map edit events.
*/
{
// We will be accessing the environment
MutexAutoLock lock(m_env_mutex);
// Don't send too many at a time
//u32 count = 0;
// Single change sending is disabled if queue size is not small
bool disable_single_change_sending = false;
if(m_unsent_map_edit_queue.size() >= 4)
disable_single_change_sending = true;
int event_count = m_unsent_map_edit_queue.size();
// We'll log the amount of each
Profiler prof;
std::list<v3s16> node_meta_updates;
while (!m_unsent_map_edit_queue.empty()) {
MapEditEvent* event = m_unsent_map_edit_queue.front();
m_unsent_map_edit_queue.pop();
// Players far away from the change are stored here.
// Instead of sending the changes, MapBlocks are set not sent
// for them.
std::unordered_set<u16> far_players;
switch (event->type) {
case MEET_ADDNODE:
case MEET_SWAPNODE:
prof.add("MEET_ADDNODE", 1);
sendAddNode(event->p, event->n, &far_players,
disable_single_change_sending ? 5 : 30,
event->type == MEET_ADDNODE);
break;
case MEET_REMOVENODE:
prof.add("MEET_REMOVENODE", 1);
sendRemoveNode(event->p, &far_players,
disable_single_change_sending ? 5 : 30);
break;
case MEET_BLOCK_NODE_METADATA_CHANGED: {
prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
if (!event->is_private_change) {
// Don't send the change yet. Collect them to eliminate dupes.
node_meta_updates.remove(event->p);
node_meta_updates.push_back(event->p);
}
if (MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(
getNodeBlockPos(event->p))) {
block->raiseModified(MOD_STATE_WRITE_NEEDED,
MOD_REASON_REPORT_META_CHANGE);
}
break;
}
case MEET_OTHER:
prof.add("MEET_OTHER", 1);
for (const v3s16 &modified_block : event->modified_blocks) {
m_clients.markBlockposAsNotSent(modified_block);
}
break;
default:
prof.add("unknown", 1);
warningstream << "Server: Unknown MapEditEvent "
<< ((u32)event->type) << std::endl;
break;
}
/*
Set blocks not sent to far players
*/
if (!far_players.empty()) {
// Convert list format to that wanted by SetBlocksNotSent
std::map<v3s16, MapBlock*> modified_blocks2;
for (const v3s16 &modified_block : event->modified_blocks) {
modified_blocks2[modified_block] =
m_env->getMap().getBlockNoCreateNoEx(modified_block);
}
// Set blocks not sent
for (const u16 far_player : far_players) {
if (RemoteClient *client = getClient(far_player))
client->SetBlocksNotSent(modified_blocks2);
}
}
delete event;
}
if (event_count >= 5) {
infostream << "Server: MapEditEvents:" << std::endl;
prof.print(infostream);
} else if (event_count != 0) {
verbosestream << "Server: MapEditEvents:" << std::endl;
prof.print(verbosestream);
}
// Send all metadata updates
if (node_meta_updates.size())
sendMetadataChanged(node_meta_updates);
}
/*
Trigger emergethread (it somehow gets to a non-triggered but
bysy state sometimes)
*/
{
float &counter = m_emergethread_trigger_timer;
counter += dtime;
if (counter >= 2.0) {
counter = 0.0;
m_emerge->startThreads();
}
}
// Save map, players and auth stuff
{
float &counter = m_savemap_timer;
counter += dtime;
static thread_local const float save_interval =
g_settings->getFloat("server_map_save_interval");
if (counter >= save_interval) {
counter = 0.0;
MutexAutoLock lock(m_env_mutex);
ScopeProfiler sp(g_profiler, "Server: map saving (sum)");
// Save ban file
if (m_banmanager->isModified()) {
m_banmanager->save();
}
// Save changed parts of map
m_env->getMap().save(MOD_STATE_WRITE_NEEDED);
// Save players
m_env->saveLoadedPlayers();
// Save environment metadata
m_env->saveMeta();
}
}
m_shutdown_state.tick(dtime, this);
}
void Server::Receive()
{
NetworkPacket pkt;
session_t peer_id;
bool first = true;
for (;;) {
pkt.clear();
peer_id = 0;
try {
/*
In the first iteration *wait* for a packet, afterwards process
all packets that are immediately available (no waiting).
*/
if (first) {
m_con->Receive(&pkt);
first = false;
} else {
if (!m_con->TryReceive(&pkt))
return;
}
peer_id = pkt.getPeerId();
ProcessData(&pkt);
} catch (const con::InvalidIncomingDataException &e) {
infostream << "Server::Receive(): InvalidIncomingDataException: what()="
<< e.what() << std::endl;
} catch (const SerializationError &e) {
infostream << "Server::Receive(): SerializationError: what()="
<< e.what() << std::endl;
} catch (const ClientStateError &e) {
errorstream << "ProcessData: peer=" << peer_id << " what()="
<< e.what() << std::endl;
DenyAccess_Legacy(peer_id, L"Your client sent something server didn't expect."
L"Try reconnecting or updating your client");
} catch (const con::PeerNotFoundException &e) {
// Do nothing
} catch (const con::NoIncomingDataException &e) {
return;
}
}
}
PlayerSAO* Server::StageTwoClientInit(session_t peer_id)
{
std::string playername;
PlayerSAO *playersao = NULL;
m_clients.lock();
try {
RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id, CS_InitDone);
if (client) {
playername = client->getName();
playersao = emergePlayer(playername.c_str(), peer_id, client->net_proto_version);
}
} catch (std::exception &e) {
m_clients.unlock();
throw;
}
m_clients.unlock();
RemotePlayer *player = m_env->getPlayer(playername.c_str());
// If failed, cancel
if (!playersao || !player) {
if (player && player->getPeerId() != PEER_ID_INEXISTENT) {
actionstream << "Server: Failed to emerge player \"" << playername
<< "\" (player allocated to an another client)" << std::endl;
DenyAccess_Legacy(peer_id, L"Another client is connected with this "
L"name. If your client closed unexpectedly, try again in "
L"a minute.");
} else {
errorstream << "Server: " << playername << ": Failed to emerge player"
<< std::endl;
DenyAccess_Legacy(peer_id, L"Could not allocate player.");
}
return NULL;
}
/*
Send complete position information
*/
SendMovePlayer(peer_id);
// Send privileges
SendPlayerPrivileges(peer_id);
// Send inventory formspec
SendPlayerInventoryFormspec(peer_id);
// Send inventory
SendInventory(playersao, false);
// Send HP or death screen
if (playersao->isDead())
SendDeathscreen(peer_id, false, v3f(0,0,0));
else
SendPlayerHPOrDie(playersao,
PlayerHPChangeReason(PlayerHPChangeReason::SET_HP));
// Send Breath
SendPlayerBreath(playersao);
/*
Print out action
*/
{
Address addr = getPeerAddress(player->getPeerId());
std::string ip_str = addr.serializeString();
const std::vector<std::string> &names = m_clients.getPlayerNames();
actionstream << player->getName() << " [" << ip_str << "] joins game. List of players: ";
for (const std::string &name : names) {
actionstream << name << " ";
}
actionstream << player->getName() <<std::endl;
}
return playersao;
}
inline void Server::handleCommand(NetworkPacket *pkt)
{
const ToServerCommandHandler &opHandle = toServerCommandTable[pkt->getCommand()];
(this->*opHandle.handler)(pkt);
}
void Server::ProcessData(NetworkPacket *pkt)
{
// Environment is locked first.
MutexAutoLock envlock(m_env_mutex);
ScopeProfiler sp(g_profiler, "Server: Process network packet (sum)");
u32 peer_id = pkt->getPeerId();
try {
Address address = getPeerAddress(peer_id);
std::string addr_s = address.serializeString();
if(m_banmanager->isIpBanned(addr_s)) {
std::string ban_name = m_banmanager->getBanName(addr_s);
infostream << "Server: A banned client tried to connect from "
<< addr_s << "; banned name was "
<< ban_name << std::endl;
// This actually doesn't seem to transfer to the client
DenyAccess_Legacy(peer_id, L"Your ip is banned. Banned name was "
+ utf8_to_wide(ban_name));
return;
}
}
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 "
<< peer_id << " not found" << std::endl;
return;
}
try {
ToServerCommand command = (ToServerCommand) pkt->getCommand();
// Command must be handled into ToServerCommandHandler
if (command >= TOSERVER_NUM_MSG_TYPES) {
infostream << "Server: Ignoring unknown command "
<< command << std::endl;
return;
}
if (toServerCommandTable[command].state == TOSERVER_STATE_NOT_CONNECTED) {
handleCommand(pkt);
return;
}
u8 peer_ser_ver = getClient(peer_id, CS_InitDone)->serialization_version;
if(peer_ser_ver == SER_FMT_VER_INVALID) {
errorstream << "Server::ProcessData(): Cancelling: Peer"
" serialization format invalid or not initialized."
" Skipping incoming command=" << command << std::endl;
return;
}
/* Handle commands related to client startup */
if (toServerCommandTable[command].state == TOSERVER_STATE_STARTUP) {
handleCommand(pkt);
return;
}
if (m_clients.getClientState(peer_id) < CS_Active) {
if (command == TOSERVER_PLAYERPOS) return;
errorstream << "Got packet command: " << command << " for peer id "
<< peer_id << " but client isn't active yet. Dropping packet "
<< std::endl;
return;
}
handleCommand(pkt);
} catch (SendFailedException &e) {
errorstream << "Server::ProcessData(): SendFailedException: "
<< "what=" << e.what()
<< std::endl;
} catch (PacketError &e) {
actionstream << "Server::ProcessData(): PacketError: "
<< "what=" << e.what()
<< std::endl;
}
}
void Server::setTimeOfDay(u32 time)
{
m_env->setTimeOfDay(time);
m_time_of_day_send_timer = 0;
}
void Server::onMapEditEvent(const MapEditEvent &event)
{
if (m_ignore_map_edit_events_area.contains(event.getArea()))
return;
m_unsent_map_edit_queue.push(new MapEditEvent(event));
}
Inventory* Server::getInventory(const InventoryLocation &loc)
{
switch (loc.type) {
case InventoryLocation::UNDEFINED:
case InventoryLocation::CURRENT_PLAYER:
break;
case InventoryLocation::PLAYER:
{
RemotePlayer *player = m_env->getPlayer(loc.name.c_str());
if(!player)
return NULL;
PlayerSAO *playersao = player->getPlayerSAO();
if(!playersao)
return NULL;
return playersao->getInventory();
}
break;
case InventoryLocation::NODEMETA:
{
NodeMetadata *meta = m_env->getMap().getNodeMetadata(loc.p);
if(!meta)
return NULL;
return meta->getInventory();
}
break;
case InventoryLocation::DETACHED:
{
if(m_detached_inventories.count(loc.name) == 0)
return NULL;
return m_detached_inventories[loc.name];
}
break;
default:
sanity_check(false); // abort
break;
}
return NULL;
}
void Server::setInventoryModified(const InventoryLocation &loc)
{
switch(loc.type){
case InventoryLocation::UNDEFINED:
break;
case InventoryLocation::PLAYER:
{
RemotePlayer *player = m_env->getPlayer(loc.name.c_str());
if (!player)
return;
player->setModified(true);
player->inventory.setModified(true);
// Updates are sent in ServerEnvironment::step()
}
break;
case InventoryLocation::NODEMETA:
{
MapEditEvent event;
event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
event.p = loc.p;
m_env->getMap().dispatchEvent(event);
}
break;
case InventoryLocation::DETACHED:
{
// Updates are sent in ServerEnvironment::step()
}
break;
default:
sanity_check(false); // abort
break;
}
}
void Server::SetBlocksNotSent(std::map<v3s16, MapBlock *>& block)
{
std::vector<session_t> clients = m_clients.getClientIDs();
m_clients.lock();
// Set the modified blocks unsent for all the clients
for (const session_t client_id : clients) {
if (RemoteClient *client = m_clients.lockedGetClientNoEx(client_id))
client->SetBlocksNotSent(block);
}
m_clients.unlock();
}
void Server::peerAdded(con::Peer *peer)
{
verbosestream<<"Server::peerAdded(): peer->id="
<<peer->id<<std::endl;
m_peer_change_queue.push(con::PeerChange(con::PEER_ADDED, peer->id, false));
}
void Server::deletingPeer(con::Peer *peer, bool timeout)
{
verbosestream<<"Server::deletingPeer(): peer->id="
<<peer->id<<", timeout="<<timeout<<std::endl;
m_clients.event(peer->id, CSE_Disconnect);
m_peer_change_queue.push(con::PeerChange(con::PEER_REMOVED, peer->id, timeout));
}
bool Server::getClientConInfo(session_t peer_id, con::rtt_stat_type type, float* retval)
{
*retval = m_con->getPeerStat(peer_id,type);
return *retval != -1;
}
bool Server::getClientInfo(
session_t peer_id,
ClientState* state,
u32* uptime,
u8* ser_vers,
u16* prot_vers,
u8* major,
u8* minor,
u8* patch,
std::string* vers_string
)
{
*state = m_clients.getClientState(peer_id);
m_clients.lock();
RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id, CS_Invalid);
if (!client) {
m_clients.unlock();
return false;
}
*uptime = client->uptime();
*ser_vers = client->serialization_version;
*prot_vers = client->net_proto_version;
*major = client->getMajor();
*minor = client->getMinor();
*patch = client->getPatch();
*vers_string = client->getFull();
m_clients.unlock();
return true;
}
void Server::handlePeerChanges()
{
while(!m_peer_change_queue.empty())
{
con::PeerChange c = m_peer_change_queue.front();
m_peer_change_queue.pop();
verbosestream<<"Server: Handling peer change: "
<<"id="<<c.peer_id<<", timeout="<<c.timeout
<<std::endl;
switch(c.type)
{
case con::PEER_ADDED:
m_clients.CreateClient(c.peer_id);
break;
case con::PEER_REMOVED:
DeleteClient(c.peer_id, c.timeout?CDR_TIMEOUT:CDR_LEAVE);
break;
default:
FATAL_ERROR("Invalid peer change event received!");
break;
}
}
}
void Server::printToConsoleOnly(const std::string &text)
{
if (m_admin_chat) {
m_admin_chat->outgoing_queue.push_back(
new ChatEventChat("", utf8_to_wide(text)));
} else {
std::cout << text << std::endl;
}
}
void Server::Send(NetworkPacket *pkt)
{
Send(pkt->getPeerId(), pkt);
}
void Server::Send(session_t peer_id, NetworkPacket *pkt)
{
m_clients.send(peer_id,
clientCommandFactoryTable[pkt->getCommand()].channel,
pkt,
clientCommandFactoryTable[pkt->getCommand()].reliable);
}
void Server::SendMovement(session_t peer_id)
{
std::ostringstream os(std::ios_base::binary);
NetworkPacket pkt(TOCLIENT_MOVEMENT, 12 * sizeof(float), peer_id);
pkt << g_settings->getFloat("movement_acceleration_default");
pkt << g_settings->getFloat("movement_acceleration_air");
pkt << g_settings->getFloat("movement_acceleration_fast");
pkt << g_settings->getFloat("movement_speed_walk");
pkt << g_settings->getFloat("movement_speed_crouch");
pkt << g_settings->getFloat("movement_speed_fast");
pkt << g_settings->getFloat("movement_speed_climb");
pkt << g_settings->getFloat("movement_speed_jump");
pkt << g_settings->getFloat("movement_liquid_fluidity");
pkt << g_settings->getFloat("movement_liquid_fluidity_smooth");
pkt << g_settings->getFloat("movement_liquid_sink");
pkt << g_settings->getFloat("movement_gravity");
Send(&pkt);
}
void Server::SendPlayerHPOrDie(PlayerSAO *playersao, const PlayerHPChangeReason &reason)
{
if (playersao->isImmortal())
return;
session_t peer_id = playersao->getPeerID();
bool is_alive = playersao->getHP() > 0;
if (is_alive)
SendPlayerHP(peer_id);
else
DiePlayer(peer_id, reason);
}
void Server::SendHP(session_t peer_id, u16 hp)
{
NetworkPacket pkt(TOCLIENT_HP, 1, peer_id);
pkt << hp;
Send(&pkt);
}
void Server::SendBreath(session_t peer_id, u16 breath)
{
NetworkPacket pkt(TOCLIENT_BREATH, 2, peer_id);
pkt << (u16) breath;
Send(&pkt);
}
void Server::SendAccessDenied(session_t peer_id, AccessDeniedCode reason,
const std::string &custom_reason, bool reconnect)
{
assert(reason < SERVER_ACCESSDENIED_MAX);
NetworkPacket pkt(TOCLIENT_ACCESS_DENIED, 1, peer_id);
pkt << (u8)reason;
if (reason == SERVER_ACCESSDENIED_CUSTOM_STRING)
pkt << custom_reason;
else if (reason == SERVER_ACCESSDENIED_SHUTDOWN ||
reason == SERVER_ACCESSDENIED_CRASH)
pkt << custom_reason << (u8)reconnect;
Send(&pkt);
}
void Server::SendAccessDenied_Legacy(session_t peer_id,const std::wstring &reason)
{
NetworkPacket pkt(TOCLIENT_ACCESS_DENIED_LEGACY, 0, peer_id);
pkt << reason;
Send(&pkt);
}
void Server::SendDeathscreen(session_t peer_id, bool set_camera_point_target,
v3f camera_point_target)
{
NetworkPacket pkt(TOCLIENT_DEATHSCREEN, 1 + sizeof(v3f), peer_id);
pkt << set_camera_point_target << camera_point_target;
Send(&pkt);
}
void Server::SendItemDef(session_t peer_id,
IItemDefManager *itemdef, u16 protocol_version)
{
NetworkPacket pkt(TOCLIENT_ITEMDEF, 0, peer_id);
/*
u16 command
u32 length of the next item
zlib-compressed serialized ItemDefManager
*/
std::ostringstream tmp_os(std::ios::binary);
itemdef->serialize(tmp_os, protocol_version);
std::ostringstream tmp_os2(std::ios::binary);
compressZlib(tmp_os.str(), tmp_os2);
pkt.putLongString(tmp_os2.str());
// Make data buffer
verbosestream << "Server: Sending item definitions to id(" << peer_id
<< "): size=" << pkt.getSize() << std::endl;
Send(&pkt);
}
void Server::SendNodeDef(session_t peer_id,
const NodeDefManager *nodedef, u16 protocol_version)
{
NetworkPacket pkt(TOCLIENT_NODEDEF, 0, peer_id);
/*
u16 command
u32 length of the next item
zlib-compressed serialized NodeDefManager
*/
std::ostringstream tmp_os(std::ios::binary);
nodedef->serialize(tmp_os, protocol_version);
std::ostringstream tmp_os2(std::ios::binary);
compressZlib(tmp_os.str(), tmp_os2);
pkt.putLongString(tmp_os2.str());
// Make data buffer
verbosestream << "Server: Sending node definitions to id(" << peer_id
<< "): size=" << pkt.getSize() << std::endl;
Send(&pkt);
}
/*
Non-static send methods
*/
void Server::SendInventory(PlayerSAO *sao, bool incremental)
{
RemotePlayer *player = sao->getPlayer();
// Do not send new format to old clients
incremental &= player->protocol_version >= 38;
UpdateCrafting(player);
/*
Serialize it
*/
NetworkPacket pkt(TOCLIENT_INVENTORY, 0, sao->getPeerID());
std::ostringstream os(std::ios::binary);
sao->getInventory()->serialize(os, incremental);
sao->getInventory()->setModified(false);
player->setModified(true);
const std::string &s = os.str();
pkt.putRawString(s.c_str(), s.size());
Send(&pkt);
}
void Server::SendChatMessage(session_t peer_id, const ChatMessage &message)
{
NetworkPacket pkt(TOCLIENT_CHAT_MESSAGE, 0, peer_id);
u8 version = 1;
u8 type = message.type;
pkt << version << type << std::wstring(L"") << message.message << (u64)message.timestamp;
if (peer_id != PEER_ID_INEXISTENT) {
RemotePlayer *player = m_env->getPlayer(peer_id);
if (!player)
return;
Send(&pkt);
} else {
m_clients.sendToAll(&pkt);
}
}
void Server::SendShowFormspecMessage(session_t peer_id, const std::string &formspec,
const std::string &formname)
{
NetworkPacket pkt(TOCLIENT_SHOW_FORMSPEC, 0, peer_id);
if (formspec.empty()){
//the client should close the formspec
//but make sure there wasn't another one open in meantime
const auto it = m_formspec_state_data.find(peer_id);
if (it != m_formspec_state_data.end() && it->second == formname) {
m_formspec_state_data.erase(peer_id);
}
pkt.putLongString("");
} else {
m_formspec_state_data[peer_id] = formname;
pkt.putLongString(formspec);
}
pkt << formname;
Send(&pkt);
}
// Spawns a particle on peer with peer_id
void Server::SendSpawnParticle(session_t peer_id, u16 protocol_version,
v3f pos, v3f velocity, v3f acceleration,
float expirationtime, float size, bool collisiondetection,
bool collision_removal, bool object_collision,
bool vertical, const std::string &texture,
const struct TileAnimationParams &animation, u8 glow)
{
static thread_local const float radius =
g_settings->getS16("max_block_send_distance") * MAP_BLOCKSIZE * BS;
if (peer_id == PEER_ID_INEXISTENT) {
std::vector<session_t> clients = m_clients.getClientIDs();
for (const session_t client_id : clients) {
RemotePlayer *player = m_env->getPlayer(client_id);
if (!player)
continue;
PlayerSAO *sao = player->getPlayerSAO();
if (!sao)
continue;
// Do not send to distant clients
if (sao->getBasePosition().getDistanceFrom(pos * BS) > radius)
continue;
SendSpawnParticle(client_id, player->protocol_version,
pos, velocity, acceleration,
expirationtime, size, collisiondetection, collision_removal,
object_collision, vertical, texture, animation, glow);
}
return;
}
NetworkPacket pkt(TOCLIENT_SPAWN_PARTICLE, 0, peer_id);
pkt << pos << velocity << acceleration << expirationtime
<< size << collisiondetection;
pkt.putLongString(texture);
pkt << vertical;
pkt << collision_removal;
// This is horrible but required (why are there two ways to serialize pkts?)
std::ostringstream os(std::ios_base::binary);
animation.serialize(os, protocol_version);
pkt.putRawString(os.str());
pkt << glow;
pkt << object_collision;
Send(&pkt);
}
// Adds a ParticleSpawner on peer with peer_id
void Server::SendAddParticleSpawner(session_t peer_id, u16 protocol_version,
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, bool collision_removal,
bool object_collision, u16 attached_id, bool vertical, const std::string &texture, u32 id,
const struct TileAnimationParams &animation, u8 glow)
{
if (peer_id == PEER_ID_INEXISTENT) {
// This sucks and should be replaced:
std::vector<session_t> clients = m_clients.getClientIDs();
for (const session_t client_id : clients) {
RemotePlayer *player = m_env->getPlayer(client_id);
if (!player)
continue;
SendAddParticleSpawner(client_id, player->protocol_version,
amount, spawntime, minpos, maxpos,
minvel, maxvel, minacc, maxacc, minexptime, maxexptime,
minsize, maxsize, collisiondetection, collision_removal,
object_collision, attached_id, vertical, texture, id,
animation, glow);
}
return;
}
NetworkPacket pkt(TOCLIENT_ADD_PARTICLESPAWNER, 0, peer_id);
pkt << amount << spawntime << minpos << maxpos << minvel << maxvel
<< minacc << maxacc << minexptime << maxexptime << minsize
<< maxsize << collisiondetection;
pkt.putLongString(texture);
pkt << id << vertical;
pkt << collision_removal;
pkt << attached_id;
// This is horrible but required
std::ostringstream os(std::ios_base::binary);
animation.serialize(os, protocol_version);
pkt.putRawString(os.str());
pkt << glow;
pkt << object_collision;
Send(&pkt);
}
void Server::SendDeleteParticleSpawner(session_t peer_id, u32 id)
{
NetworkPacket pkt(TOCLIENT_DELETE_PARTICLESPAWNER, 4, peer_id);
// Ugly error in this packet
pkt << id;
if (peer_id != PEER_ID_INEXISTENT)
Send(&pkt);
else
m_clients.sendToAll(&pkt);
}
void Server::SendHUDAdd(session_t peer_id, u32 id, HudElement *form)
{
NetworkPacket pkt(TOCLIENT_HUDADD, 0 , peer_id);
pkt << id << (u8) form->type << form->pos << form->name << form->scale
<< form->text << form->number << form->item << form->dir
<< form->align << form->offset << form->world_pos << form->size
<< form->z_index;
Send(&pkt);
}
void Server::SendHUDRemove(session_t peer_id, u32 id)
{
NetworkPacket pkt(TOCLIENT_HUDRM, 4, peer_id);
pkt << id;
Send(&pkt);
}
void Server::SendHUDChange(session_t peer_id, u32 id, HudElementStat stat, void *value)
{
NetworkPacket pkt(TOCLIENT_HUDCHANGE, 0, peer_id);
pkt << id << (u8) stat;
switch (stat) {
case HUD_STAT_POS:
case HUD_STAT_SCALE:
case HUD_STAT_ALIGN:
case HUD_STAT_OFFSET:
pkt << *(v2f *) value;
break;
case HUD_STAT_NAME:
case HUD_STAT_TEXT:
pkt << *(std::string *) value;
break;
case HUD_STAT_WORLD_POS:
pkt << *(v3f *) value;
break;
case HUD_STAT_SIZE:
pkt << *(v2s32 *) value;
break;
case HUD_STAT_NUMBER:
case HUD_STAT_ITEM:
case HUD_STAT_DIR:
default:
pkt << *(u32 *) value;
break;
}
Send(&pkt);
}
void Server::SendHUDSetFlags(session_t peer_id, u32 flags, u32 mask)
{
NetworkPacket pkt(TOCLIENT_HUD_SET_FLAGS, 4 + 4, peer_id);
flags &= ~(HUD_FLAG_HEALTHBAR_VISIBLE | HUD_FLAG_BREATHBAR_VISIBLE);
pkt << flags << mask;
Send(&pkt);
}
void Server::SendHUDSetParam(session_t peer_id, u16 param, const std::string &value)
{
NetworkPacket pkt(TOCLIENT_HUD_SET_PARAM, 0, peer_id);
pkt << param << value;
Send(&pkt);
}
void Server::SendSetSky(session_t peer_id, const SkyboxParams &params)
{
NetworkPacket pkt(TOCLIENT_SET_SKY, 0, peer_id);
// Handle prior clients here
if (m_clients.getProtocolVersion(peer_id) < 39) {
pkt << params.bgcolor << params.type << (u16) params.textures.size();
for (const std::string& texture : params.textures)
pkt << texture;
pkt << params.clouds;
} else { // Handle current clients and future clients
pkt << params.bgcolor << params.type
<< params.clouds << params.sun_tint
<< params.moon_tint << params.tint_type;
if (params.type == "skybox") {
pkt << (u16) params.textures.size();
for (const std::string &texture : params.textures)
pkt << texture;
} else if (params.type == "regular") {
pkt << params.sky_color.day_sky << params.sky_color.day_horizon
<< params.sky_color.dawn_sky << params.sky_color.dawn_horizon
<< params.sky_color.night_sky << params.sky_color.night_horizon
<< params.sky_color.indoors;
}
}
Send(&pkt);
}
void Server::SendSetSun(session_t peer_id, const SunParams &params)
{
NetworkPacket pkt(TOCLIENT_SET_SUN, 0, peer_id);
pkt << params.visible << params.texture
<< params.tonemap << params.sunrise
<< params.sunrise_visible << params.scale;
Send(&pkt);
}
void Server::SendSetMoon(session_t peer_id, const MoonParams &params)
{
NetworkPacket pkt(TOCLIENT_SET_MOON, 0, peer_id);
pkt << params.visible << params.texture
<< params.tonemap << params.scale;
Send(&pkt);
}
void Server::SendSetStars(session_t peer_id, const StarParams &params)
{
NetworkPacket pkt(TOCLIENT_SET_STARS, 0, peer_id);
pkt << params.visible << params.count
<< params.starcolor << params.scale;
Send(&pkt);
}
void Server::SendCloudParams(session_t peer_id, const CloudParams &params)
{
NetworkPacket pkt(TOCLIENT_CLOUD_PARAMS, 0, peer_id);
pkt << params.density << params.color_bright << params.color_ambient
<< params.height << params.thickness << params.speed;
Send(&pkt);
}
void Server::SendOverrideDayNightRatio(session_t peer_id, bool do_override,
float ratio)
{
NetworkPacket pkt(TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO,
1 + 2, peer_id);
pkt << do_override << (u16) (ratio * 65535);
Send(&pkt);
}
void Server::SendTimeOfDay(session_t peer_id, u16 time, f32 time_speed)
{
NetworkPacket pkt(TOCLIENT_TIME_OF_DAY, 0, peer_id);
pkt << time << time_speed;
if (peer_id == PEER_ID_INEXISTENT) {
m_clients.sendToAll(&pkt);
}
else {
Send(&pkt);
}
}
void Server::SendPlayerHP(session_t peer_id)
{
PlayerSAO *playersao = getPlayerSAO(peer_id);
assert(playersao);
SendHP(peer_id, playersao->getHP());
m_script->player_event(playersao,"health_changed");
// Send to other clients
playersao->sendPunchCommand();
}
void Server::SendPlayerBreath(PlayerSAO *sao)
{
assert(sao);
m_script->player_event(sao, "breath_changed");
SendBreath(sao->getPeerID(), sao->getBreath());
}
void Server::SendMovePlayer(session_t peer_id)
{
RemotePlayer *player = m_env->getPlayer(peer_id);
assert(player);
PlayerSAO *sao = player->getPlayerSAO();
assert(sao);
NetworkPacket pkt(TOCLIENT_MOVE_PLAYER, sizeof(v3f) + sizeof(f32) * 2, peer_id);
pkt << sao->getBasePosition() << sao->getLookPitch() << sao->getRotation().Y;
{
v3f pos = sao->getBasePosition();
verbosestream << "Server: Sending TOCLIENT_MOVE_PLAYER"
<< " pos=(" << pos.X << "," << pos.Y << "," << pos.Z << ")"
<< " pitch=" << sao->getLookPitch()
<< " yaw=" << sao->getRotation().Y
<< std::endl;
}
Send(&pkt);
}
void Server::SendPlayerFov(session_t peer_id)
{
NetworkPacket pkt(TOCLIENT_FOV, 4 + 1, peer_id);
PlayerFovSpec fov_spec = m_env->getPlayer(peer_id)->getFov();
pkt << fov_spec.fov << fov_spec.is_multiplier;
Send(&pkt);
}
void Server::SendLocalPlayerAnimations(session_t peer_id, v2s32 animation_frames[4],
f32 animation_speed)
{
NetworkPacket pkt(TOCLIENT_LOCAL_PLAYER_ANIMATIONS, 0,
peer_id);
pkt << animation_frames[0] << animation_frames[1] << animation_frames[2]
<< animation_frames[3] << animation_speed;
Send(&pkt);
}
void Server::SendEyeOffset(session_t peer_id, v3f first, v3f third)
{
NetworkPacket pkt(TOCLIENT_EYE_OFFSET, 0, peer_id);
pkt << first << third;
Send(&pkt);
}
void Server::SendPlayerPrivileges(session_t peer_id)
{
RemotePlayer *player = m_env->getPlayer(peer_id);
assert(player);
if(player->getPeerId() == PEER_ID_INEXISTENT)
return;
std::set<std::string> privs;
m_script->getAuth(player->getName(), NULL, &privs);
NetworkPacket pkt(TOCLIENT_PRIVILEGES, 0, peer_id);
pkt << (u16) privs.size();
for (const std::string &priv : privs) {
pkt << priv;
}
Send(&pkt);
}
void Server::SendPlayerInventoryFormspec(session_t peer_id)
{
RemotePlayer *player = m_env->getPlayer(peer_id);
assert(player);
if (player->getPeerId() == PEER_ID_INEXISTENT)
return;
NetworkPacket pkt(TOCLIENT_INVENTORY_FORMSPEC, 0, peer_id);
pkt.putLongString(player->inventory_formspec);
Send(&pkt);
}
void Server::SendPlayerFormspecPrepend(session_t peer_id)
{
RemotePlayer *player = m_env->getPlayer(peer_id);
assert(player);
if (player->getPeerId() == PEER_ID_INEXISTENT)
return;
NetworkPacket pkt(TOCLIENT_FORMSPEC_PREPEND, 0, peer_id);
pkt << player->formspec_prepend;
Send(&pkt);
}
void Server::SendActiveObjectRemoveAdd(RemoteClient *client, PlayerSAO *playersao)
{
// Radius inside which objects are active
static thread_local const s16 radius =
g_settings->getS16("active_object_send_range_blocks") * MAP_BLOCKSIZE;
// Radius inside which players are active
static thread_local const bool is_transfer_limited =
g_settings->exists("unlimited_player_transfer_distance") &&
!g_settings->getBool("unlimited_player_transfer_distance");
static thread_local const s16 player_transfer_dist =
g_settings->getS16("player_transfer_distance") * MAP_BLOCKSIZE;
s16 player_radius = player_transfer_dist == 0 && is_transfer_limited ?
radius : player_transfer_dist;
s16 my_radius = MYMIN(radius, playersao->getWantedRange() * MAP_BLOCKSIZE);
if (my_radius <= 0)
my_radius = radius;
std::queue<u16> removed_objects, added_objects;
m_env->getRemovedActiveObjects(playersao, my_radius, player_radius,
client->m_known_objects, removed_objects);
m_env->getAddedActiveObjects(playersao, my_radius, player_radius,
client->m_known_objects, added_objects);
int removed_count = removed_objects.size();
int added_count = added_objects.size();
if (removed_objects.empty() && added_objects.empty())
return;
char buf[4];
std::string data;
// Handle removed objects
writeU16((u8*)buf, removed_objects.size());
data.append(buf, 2);
while (!removed_objects.empty()) {
// Get object
u16 id = removed_objects.front();
ServerActiveObject* obj = m_env->getActiveObject(id);
// Add to data buffer for sending
writeU16((u8*)buf, id);
data.append(buf, 2);
// Remove from known objects
client->m_known_objects.erase(id);
if (obj && obj->m_known_by_count > 0)
obj->m_known_by_count--;
removed_objects.pop();
}
// Handle added objects
writeU16((u8*)buf, added_objects.size());
data.append(buf, 2);
while (!added_objects.empty()) {
// Get object
u16 id = added_objects.front();
ServerActiveObject *obj = m_env->getActiveObject(id);
added_objects.pop();
if (!obj) {
warningstream << FUNCTION_NAME << ": NULL object id="
<< (int)id << std::endl;
continue;
}
// Get object type
u8 type = obj->getSendType();
// Add to data buffer for sending
writeU16((u8*)buf, id);
data.append(buf, 2);
writeU8((u8*)buf, type);
data.append(buf, 1);
data.append(serializeLongString(
obj->getClientInitializationData(client->net_proto_version)));
// Add to known objects
client->m_known_objects.insert(id);
obj->m_known_by_count++;
}
NetworkPacket pkt(TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD, data.size(), client->peer_id);
pkt.putRawString(data.c_str(), data.size());
Send(&pkt);
verbosestream << "Server::SendActiveObjectRemoveAdd: "
<< removed_count << " removed, " << added_count << " added, "
<< "packet size is " << pkt.getSize() << std::endl;
}
void Server::SendActiveObjectMessages(session_t peer_id, const std::string &datas,
bool reliable)
{
NetworkPacket pkt(TOCLIENT_ACTIVE_OBJECT_MESSAGES,
datas.size(), peer_id);
pkt.putRawString(datas.c_str(), datas.size());
m_clients.send(pkt.getPeerId(),
reliable ? clientCommandFactoryTable[pkt.getCommand()].channel : 1,
&pkt, reliable);
}
void Server::SendCSMRestrictionFlags(session_t peer_id)
{
NetworkPacket pkt(TOCLIENT_CSM_RESTRICTION_FLAGS,
sizeof(m_csm_restriction_flags) + sizeof(m_csm_restriction_noderange), peer_id);
pkt << m_csm_restriction_flags << m_csm_restriction_noderange;
Send(&pkt);
}
void Server::SendPlayerSpeed(session_t peer_id, const v3f &added_vel)
{
NetworkPacket pkt(TOCLIENT_PLAYER_SPEED, 0, peer_id);
pkt << added_vel;
Send(&pkt);
}
inline s32 Server::nextSoundId()
{
s32 ret = m_next_sound_id;
if (m_next_sound_id == INT32_MAX)
m_next_sound_id = 0; // signed overflow is undefined
else
m_next_sound_id++;
return ret;
}
s32 Server::playSound(const SimpleSoundSpec &spec,
const ServerSoundParams &params, bool ephemeral)
{
// Find out initial position of sound
bool pos_exists = false;
v3f pos = params.getPos(m_env, &pos_exists);
// If position is not found while it should be, cancel sound
if(pos_exists != (params.type != ServerSoundParams::SSP_LOCAL))
return -1;
// Filter destination clients
std::vector<session_t> dst_clients;
if (!params.to_player.empty()) {
RemotePlayer *player = m_env->getPlayer(params.to_player.c_str());
if(!player){
infostream<<"Server::playSound: Player \""<<params.to_player
<<"\" not found"<<std::endl;
return -1;
}
if (player->getPeerId() == PEER_ID_INEXISTENT) {
infostream<<"Server::playSound: Player \""<<params.to_player
<<"\" not connected"<<std::endl;
return -1;
}
dst_clients.push_back(player->getPeerId());
} else {
std::vector<session_t> clients = m_clients.getClientIDs();
for (const session_t client_id : clients) {
RemotePlayer *player = m_env->getPlayer(client_id);
if (!player)
continue;
if (!params.exclude_player.empty() &&
params.exclude_player == player->getName())
continue;
PlayerSAO *sao = player->getPlayerSAO();
if (!sao)
continue;
if (pos_exists) {
if(sao->getBasePosition().getDistanceFrom(pos) >
params.max_hear_distance)
continue;
}
dst_clients.push_back(client_id);
}
}
if(dst_clients.empty())
return -1;
// Create the sound
s32 id;
ServerPlayingSound *psound = nullptr;
if (ephemeral) {
id = -1; // old clients will still use this, so pick a reserved ID
} else {
id = nextSoundId();
// The sound will exist as a reference in m_playing_sounds
m_playing_sounds[id] = ServerPlayingSound();
psound = &m_playing_sounds[id];
psound->params = params;
psound->spec = spec;
}
float gain = params.gain * spec.gain;
NetworkPacket pkt(TOCLIENT_PLAY_SOUND, 0);
pkt << id << spec.name << gain
<< (u8) params.type << pos << params.object
<< params.loop << params.fade << params.pitch
<< ephemeral;
bool as_reliable = !ephemeral;
for (const u16 dst_client : dst_clients) {
if (psound)
psound->clients.insert(dst_client);
m_clients.send(dst_client, 0, &pkt, as_reliable);
}
return id;
}
void Server::stopSound(s32 handle)
{
// Get sound reference
std::unordered_map<s32, ServerPlayingSound>::iterator i =
m_playing_sounds.find(handle);
if (i == m_playing_sounds.end())
return;
ServerPlayingSound &psound = i->second;
NetworkPacket pkt(TOCLIENT_STOP_SOUND, 4);
pkt << handle;
for (std::unordered_set<session_t>::const_iterator si = psound.clients.begin();
si != psound.clients.end(); ++si) {
// Send as reliable
m_clients.send(*si, 0, &pkt, true);
}
// Remove sound reference
m_playing_sounds.erase(i);
}
void Server::fadeSound(s32 handle, float step, float gain)
{
// Get sound reference
std::unordered_map<s32, ServerPlayingSound>::iterator i =
m_playing_sounds.find(handle);
if (i == m_playing_sounds.end())
return;
ServerPlayingSound &psound = i->second;
psound.params.gain = gain;
NetworkPacket pkt(TOCLIENT_FADE_SOUND, 4);
pkt << handle << step << gain;
// Backwards compability
bool play_sound = gain > 0;
ServerPlayingSound compat_psound = psound;
compat_psound.clients.clear();
NetworkPacket compat_pkt(TOCLIENT_STOP_SOUND, 4);
compat_pkt << handle;
for (std::unordered_set<u16>::iterator it = psound.clients.begin();
it != psound.clients.end();) {
if (m_clients.getProtocolVersion(*it) >= 32) {
// Send as reliable
m_clients.send(*it, 0, &pkt, true);
++it;
} else {
compat_psound.clients.insert(*it);
// Stop old sound
m_clients.send(*it, 0, &compat_pkt, true);
psound.clients.erase(it++);
}
}
// Remove sound reference
if (!play_sound || psound.clients.empty())
m_playing_sounds.erase(i);
if (play_sound && !compat_psound.clients.empty()) {
// Play new sound volume on older clients
playSound(compat_psound.spec, compat_psound.params);
}
}
void Server::sendRemoveNode(v3s16 p, std::unordered_set<u16> *far_players,
float far_d_nodes)
{
float maxd = far_d_nodes * BS;
v3f p_f = intToFloat(p, BS);
v3s16 block_pos = getNodeBlockPos(p);
NetworkPacket pkt(TOCLIENT_REMOVENODE, 6);
pkt << p;
std::vector<session_t> clients = m_clients.getClientIDs();
m_clients.lock();
for (session_t client_id : clients) {
RemoteClient *client = m_clients.lockedGetClientNoEx(client_id);
if (!client)
continue;
RemotePlayer *player = m_env->getPlayer(client_id);
PlayerSAO *sao = player ? player->getPlayerSAO() : nullptr;
// If player is far away, only set modified blocks not sent
if (!client->isBlockSent(block_pos) || (sao &&
sao->getBasePosition().getDistanceFrom(p_f) > maxd)) {
if (far_players)
far_players->emplace(client_id);
else
client->SetBlockNotSent(block_pos);
continue;
}
// Send as reliable
m_clients.send(client_id, 0, &pkt, true);
}
m_clients.unlock();
}
void Server::sendAddNode(v3s16 p, MapNode n, std::unordered_set<u16> *far_players,
float far_d_nodes, bool remove_metadata)
{
float maxd = far_d_nodes * BS;
v3f p_f = intToFloat(p, BS);
v3s16 block_pos = getNodeBlockPos(p);
NetworkPacket pkt(TOCLIENT_ADDNODE, 6 + 2 + 1 + 1 + 1);
pkt << p << n.param0 << n.param1 << n.param2
<< (u8) (remove_metadata ? 0 : 1);
std::vector<session_t> clients = m_clients.getClientIDs();
m_clients.lock();
for (session_t client_id : clients) {
RemoteClient *client = m_clients.lockedGetClientNoEx(client_id);
if (!client)
continue;
RemotePlayer *player = m_env->getPlayer(client_id);
PlayerSAO *sao = player ? player->getPlayerSAO() : nullptr;
// If player is far away, only set modified blocks not sent
if (!client->isBlockSent(block_pos) || (sao &&
sao->getBasePosition().getDistanceFrom(p_f) > maxd)) {
if (far_players)
far_players->emplace(client_id);
else
client->SetBlockNotSent(block_pos);
continue;
}
// Send as reliable
m_clients.send(client_id, 0, &pkt, true);
}
m_clients.unlock();
}
void Server::sendMetadataChanged(const std::list<v3s16> &meta_updates, float far_d_nodes)
{
float maxd = far_d_nodes * BS;
NodeMetadataList meta_updates_list(false);
std::vector<session_t> clients = m_clients.getClientIDs();
m_clients.lock();
for (session_t i : clients) {
RemoteClient *client = m_clients.lockedGetClientNoEx(i);
if (!client)
continue;
ServerActiveObject *player = m_env->getActiveObject(i);
v3f player_pos = player ? player->getBasePosition() : v3f();
for (const v3s16 &pos : meta_updates) {
NodeMetadata *meta = m_env->getMap().getNodeMetadata(pos);
if (!meta)
continue;
v3s16 block_pos = getNodeBlockPos(pos);
if (!client->isBlockSent(block_pos) || (player &&
player_pos.getDistanceFrom(intToFloat(pos, BS)) > maxd)) {
client->SetBlockNotSent(block_pos);
continue;
}
// Add the change to send list
meta_updates_list.set(pos, meta);
}
if (meta_updates_list.size() == 0)
continue;
// Send the meta changes
std::ostringstream os(std::ios::binary);
meta_updates_list.serialize(os, client->net_proto_version, false, true);
std::ostringstream oss(std::ios::binary);
compressZlib(os.str(), oss);
NetworkPacket pkt(TOCLIENT_NODEMETA_CHANGED, 0);
pkt.putLongString(oss.str());
m_clients.send(i, 0, &pkt, true);
meta_updates_list.clear();
}
m_clients.unlock();
}
void Server::SendBlockNoLock(session_t peer_id, MapBlock *block, u8 ver,
u16 net_proto_version)
{
/*
Create a packet with the block in the right format
*/
std::ostringstream os(std::ios_base::binary);
block->serialize(os, ver, false);
block->serializeNetworkSpecific(os);
std::string s = os.str();
NetworkPacket pkt(TOCLIENT_BLOCKDATA, 2 + 2 + 2 + 2 + s.size(), peer_id);
pkt << block->getPos();
pkt.putRawString(s.c_str(), s.size());
Send(&pkt);
}
void Server::SendBlocks(float dtime)
{
MutexAutoLock envlock(m_env_mutex);
//TODO check if one big lock could be faster then multiple small ones
std::vector<PrioritySortedBlockTransfer> queue;
u32 total_sending = 0;
{
ScopeProfiler sp2(g_profiler, "Server::SendBlocks(): Collect list");
std::vector<session_t> clients = m_clients.getClientIDs();
m_clients.lock();
for (const session_t client_id : clients) {
RemoteClient *client = m_clients.lockedGetClientNoEx(client_id, CS_Active);
if (!client)
continue;
total_sending += client->getSendingCount();
client->GetNextBlocks(m_env,m_emerge, dtime, queue);
}
m_clients.unlock();
}
// Sort.
// Lowest priority number comes first.
// Lowest is most important.
std::sort(queue.begin(), queue.end());
m_clients.lock();
// Maximal total count calculation
// The per-client block sends is halved with the maximal online users
u32 max_blocks_to_send = (m_env->getPlayerCount() + g_settings->getU32("max_users")) *
g_settings->getU32("max_simultaneous_block_sends_per_client") / 4 + 1;
ScopeProfiler sp(g_profiler, "Server::SendBlocks(): Send to clients");
Map &map = m_env->getMap();
for (const PrioritySortedBlockTransfer &block_to_send : queue) {
if (total_sending >= max_blocks_to_send)
break;
MapBlock *block = map.getBlockNoCreateNoEx(block_to_send.pos);
if (!block)
continue;
RemoteClient *client = m_clients.lockedGetClientNoEx(block_to_send.peer_id,
CS_Active);
if (!client)
continue;
SendBlockNoLock(block_to_send.peer_id, block, client->serialization_version,
client->net_proto_version);
client->SentBlock(block_to_send.pos);
total_sending++;
}
m_clients.unlock();
}
bool Server::SendBlock(session_t peer_id, const v3s16 &blockpos)
{
MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
if (!block)
return false;
m_clients.lock();
RemoteClient *client = m_clients.lockedGetClientNoEx(peer_id, CS_Active);
if (!client || client->isBlockSent(blockpos)) {
m_clients.unlock();
return false;
}
SendBlockNoLock(peer_id, block, client->serialization_version,
client->net_proto_version);
m_clients.unlock();
return true;
}
void Server::fillMediaCache()
{
infostream<<"Server: Calculating media file checksums"<<std::endl;
// Collect all media file paths
std::vector<std::string> paths;
m_modmgr->getModsMediaPaths(paths);
fs::GetRecursiveDirs(paths, m_gamespec.path + DIR_DELIM + "textures");
fs::GetRecursiveDirs(paths, porting::path_user + DIR_DELIM + "textures" + DIR_DELIM + "server");
// Collect media file information from paths into cache
for (const std::string &mediapath : paths) {
std::vector<fs::DirListNode> dirlist = fs::GetDirListing(mediapath);
for (const fs::DirListNode &dln : dirlist) {
if (dln.dir) // Ignode dirs
continue;
std::string filename = dln.name;
// If name contains illegal characters, ignore the file
if (!string_allowed(filename, TEXTURENAME_ALLOWED_CHARS)) {
infostream<<"Server: ignoring illegal file name: \""
<< filename << "\"" << std::endl;
continue;
}
// If name is not in a supported format, ignore it
const char *supported_ext[] = {
".png", ".jpg", ".bmp", ".tga",
".pcx", ".ppm", ".psd", ".wal", ".rgb",
".ogg",
".x", ".b3d", ".md2", ".obj",
// Custom translation file format
".tr",
NULL
};
if (removeStringEnd(filename, supported_ext).empty()){
infostream << "Server: ignoring unsupported file extension: \""
<< filename << "\"" << std::endl;
continue;
}
// Ok, attempt to load the file and add to cache
std::string filepath;
filepath.append(mediapath).append(DIR_DELIM).append(filename);
// Read data
std::ifstream fis(filepath.c_str(), std::ios_base::binary);
if (!fis.good()) {
errorstream << "Server::fillMediaCache(): Could not open \""
<< filename << "\" for reading" << std::endl;
continue;
}
std::ostringstream tmp_os(std::ios_base::binary);
bool bad = false;
for(;;) {
char buf[1024];
fis.read(buf, 1024);
std::streamsize len = fis.gcount();
tmp_os.write(buf, len);
if (fis.eof())
break;
if (!fis.good()) {
bad = true;
break;
}
}
if(bad) {
errorstream<<"Server::fillMediaCache(): Failed to read \""
<< filename << "\"" << std::endl;
continue;
}
if(tmp_os.str().length() == 0) {
errorstream << "Server::fillMediaCache(): Empty file \""
<< filepath << "\"" << std::endl;
continue;
}
SHA1 sha1;
sha1.addBytes(tmp_os.str().c_str(), tmp_os.str().length());
unsigned char *digest = sha1.getDigest();
std::string sha1_base64 = base64_encode(digest, 20);
std::string sha1_hex = hex_encode((char*)digest, 20);
free(digest);
// Put in list
m_media[filename] = MediaInfo(filepath, sha1_base64);
verbosestream << "Server: " << sha1_hex << " is " << filename
<< std::endl;
}
}
}
void Server::sendMediaAnnouncement(session_t peer_id, const std::string &lang_code)
{
// Make packet
NetworkPacket pkt(TOCLIENT_ANNOUNCE_MEDIA, 0, peer_id);
u16 media_sent = 0;
std::string lang_suffix;
lang_suffix.append(".").append(lang_code).append(".tr");
for (const auto &i : m_media) {
if (str_ends_with(i.first, ".tr") && !str_ends_with(i.first, lang_suffix))
continue;
media_sent++;
}
pkt << media_sent;
for (const auto &i : m_media) {
if (str_ends_with(i.first, ".tr") && !str_ends_with(i.first, lang_suffix))
continue;
pkt << i.first << i.second.sha1_digest;
}
pkt << g_settings->get("remote_media");
Send(&pkt);
verbosestream << "Server: Announcing files to id(" << peer_id
<< "): count=" << media_sent << " size=" << pkt.getSize() << std::endl;
}
struct SendableMedia
{
std::string name;
std::string path;
std::string data;
SendableMedia(const std::string &name_="", const std::string &path_="",
const std::string &data_=""):
name(name_),
path(path_),
data(data_)
{}
};
void Server::sendRequestedMedia(session_t peer_id,
const std::vector<std::string> &tosend)
{
verbosestream<<"Server::sendRequestedMedia(): "
<<"Sending files to client"<<std::endl;
/* Read files */
// Put 5kB in one bunch (this is not accurate)
u32 bytes_per_bunch = 5000;
std::vector< std::vector<SendableMedia> > file_bunches;
file_bunches.emplace_back();
u32 file_size_bunch_total = 0;
for (const std::string &name : tosend) {
if (m_media.find(name) == m_media.end()) {
errorstream<<"Server::sendRequestedMedia(): Client asked for "
<<"unknown file \""<<(name)<<"\""<<std::endl;
continue;
}
//TODO get path + name
std::string tpath = m_media[name].path;
// Read data
std::ifstream fis(tpath.c_str(), std::ios_base::binary);
if(!fis.good()){
errorstream<<"Server::sendRequestedMedia(): Could not open \""
<<tpath<<"\" for reading"<<std::endl;
continue;
}
std::ostringstream tmp_os(std::ios_base::binary);
bool bad = false;
for(;;) {
char buf[1024];
fis.read(buf, 1024);
std::streamsize len = fis.gcount();
tmp_os.write(buf, len);
file_size_bunch_total += len;
if(fis.eof())
break;
if(!fis.good()) {
bad = true;
break;
}
}
if (bad) {
errorstream<<"Server::sendRequestedMedia(): Failed to read \""
<<name<<"\""<<std::endl;
continue;
}
/*infostream<<"Server::sendRequestedMedia(): Loaded \""
<<tname<<"\""<<std::endl;*/
// Put in list
file_bunches[file_bunches.size()-1].emplace_back(name, tpath, tmp_os.str());
// Start next bunch if got enough data
if(file_size_bunch_total >= bytes_per_bunch) {
file_bunches.emplace_back();
file_size_bunch_total = 0;
}
}
/* Create and send packets */
u16 num_bunches = file_bunches.size();
for (u16 i = 0; i < num_bunches; i++) {
/*
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
}
*/
NetworkPacket pkt(TOCLIENT_MEDIA, 4 + 0, peer_id);
pkt << num_bunches << i << (u32) file_bunches[i].size();
for (const SendableMedia &j : file_bunches[i]) {
pkt << j.name;
pkt.putLongString(j.data);
}
verbosestream << "Server::sendRequestedMedia(): bunch "
<< i << "/" << num_bunches
<< " files=" << file_bunches[i].size()
<< " size=" << pkt.getSize() << std::endl;
Send(&pkt);
}
}
void Server::sendDetachedInventory(const std::string &name, session_t peer_id)
{
const auto &inv_it = m_detached_inventories.find(name);
const auto &player_it = m_detached_inventories_player.find(name);
if (player_it == m_detached_inventories_player.end() ||
player_it->second.empty()) {
// OK. Send to everyone
} else {
if (!m_env)
return; // Mods are not done loading
RemotePlayer *p = m_env->getPlayer(player_it->second.c_str());
if (!p)
return; // Player is offline
if (peer_id != PEER_ID_INEXISTENT && peer_id != p->getPeerId())
return; // Caller requested send to a different player, so don't send.
peer_id = p->getPeerId();
}
NetworkPacket pkt(TOCLIENT_DETACHED_INVENTORY, 0, peer_id);
pkt << name;
if (inv_it == m_detached_inventories.end()) {
pkt << false; // Remove inventory
} else {
pkt << true; // Update inventory
// Serialization & NetworkPacket isn't a love story
std::ostringstream os(std::ios_base::binary);
inv_it->second->serialize(os);
inv_it->second->setModified(false);
const std::string &os_str = os.str();
pkt << static_cast<u16>(os_str.size()); // HACK: to keep compatibility with 5.0.0 clients
pkt.putRawString(os_str);
}
if (peer_id == PEER_ID_INEXISTENT)
m_clients.sendToAll(&pkt);
else
Send(&pkt);
}
void Server::sendDetachedInventories(session_t peer_id, bool incremental)
{
for (const auto &detached_inventory : m_detached_inventories) {
const std::string &name = detached_inventory.first;
if (incremental) {
Inventory *inv = detached_inventory.second;
if (!inv || !inv->checkModified())
continue;
}
sendDetachedInventory(name, peer_id);
}
}
/*
Something random
*/
void Server::DiePlayer(session_t peer_id, const PlayerHPChangeReason &reason)
{
PlayerSAO *playersao = getPlayerSAO(peer_id);
assert(playersao);
infostream << "Server::DiePlayer(): Player "
<< playersao->getPlayer()->getName()
<< " dies" << std::endl;
playersao->setHP(0, reason);
playersao->clearParentAttachment();
// Trigger scripted stuff
m_script->on_dieplayer(playersao, reason);
SendPlayerHP(peer_id);
SendDeathscreen(peer_id, false, v3f(0,0,0));
}
void Server::RespawnPlayer(session_t peer_id)
{
PlayerSAO *playersao = getPlayerSAO(peer_id);
assert(playersao);
infostream << "Server::RespawnPlayer(): Player "
<< playersao->getPlayer()->getName()
<< " respawns" << std::endl;
playersao->setHP(playersao->accessObjectProperties()->hp_max,
PlayerHPChangeReason(PlayerHPChangeReason::RESPAWN));
playersao->setBreath(playersao->accessObjectProperties()->breath_max);
bool repositioned = m_script->on_respawnplayer(playersao);
if (!repositioned) {
// setPos will send the new position to client
playersao->setPos(findSpawnPos());
}
SendPlayerHP(peer_id);
}
void Server::DenySudoAccess(session_t peer_id)
{
NetworkPacket pkt(TOCLIENT_DENY_SUDO_MODE, 0, peer_id);
Send(&pkt);
}
void Server::DenyAccessVerCompliant(session_t peer_id, u16 proto_ver, AccessDeniedCode reason,
const std::string &str_reason, bool reconnect)
{
SendAccessDenied(peer_id, reason, str_reason, reconnect);
m_clients.event(peer_id, CSE_SetDenied);
DisconnectPeer(peer_id);
}
void Server::DenyAccess(session_t peer_id, AccessDeniedCode reason,
const std::string &custom_reason)
{
SendAccessDenied(peer_id, reason, custom_reason);
m_clients.event(peer_id, CSE_SetDenied);
DisconnectPeer(peer_id);
}
// 13/03/15: remove this function when protocol version 25 will become
// the minimum version for MT users, maybe in 1 year
void Server::DenyAccess_Legacy(session_t peer_id, const std::wstring &reason)
{
SendAccessDenied_Legacy(peer_id, reason);
m_clients.event(peer_id, CSE_SetDenied);
DisconnectPeer(peer_id);
}
void Server::DisconnectPeer(session_t peer_id)
{
m_modchannel_mgr->leaveAllChannels(peer_id);
m_con->DisconnectPeer(peer_id);
}
void Server::acceptAuth(session_t peer_id, bool forSudoMode)
{
if (!forSudoMode) {
RemoteClient* client = getClient(peer_id, CS_Invalid);
NetworkPacket resp_pkt(TOCLIENT_AUTH_ACCEPT, 1 + 6 + 8 + 4, peer_id);
// Right now, the auth mechs don't change between login and sudo mode.
u32 sudo_auth_mechs = client->allowed_auth_mechs;
client->allowed_sudo_mechs = sudo_auth_mechs;
resp_pkt << v3f(0,0,0) << (u64) m_env->getServerMap().getSeed()
<< g_settings->getFloat("dedicated_server_step")
<< sudo_auth_mechs;
Send(&resp_pkt);
m_clients.event(peer_id, CSE_AuthAccept);
} else {
NetworkPacket resp_pkt(TOCLIENT_ACCEPT_SUDO_MODE, 1 + 6 + 8 + 4, peer_id);
// We only support SRP right now
u32 sudo_auth_mechs = AUTH_MECHANISM_FIRST_SRP;
resp_pkt << sudo_auth_mechs;
Send(&resp_pkt);
m_clients.event(peer_id, CSE_SudoSuccess);
}
}
void Server::DeleteClient(session_t peer_id, ClientDeletionReason reason)
{
std::wstring message;
{
/*
Clear references to playing sounds
*/
for (std::unordered_map<s32, ServerPlayingSound>::iterator
i = m_playing_sounds.begin(); i != m_playing_sounds.end();) {
ServerPlayingSound &psound = i->second;
psound.clients.erase(peer_id);
if (psound.clients.empty())
m_playing_sounds.erase(i++);
else
++i;
}
// clear formspec info so the next client can't abuse the current state
m_formspec_state_data.erase(peer_id);
RemotePlayer *player = m_env->getPlayer(peer_id);
/* Run scripts and remove from environment */
if (player) {
PlayerSAO *playersao = player->getPlayerSAO();
assert(playersao);
playersao->clearChildAttachments();
playersao->clearParentAttachment();
// inform connected clients
const std::string &player_name = player->getName();
NetworkPacket notice(TOCLIENT_UPDATE_PLAYER_LIST, 0, PEER_ID_INEXISTENT);
// (u16) 1 + std::string represents a vector serialization representation
notice << (u8) PLAYER_LIST_REMOVE << (u16) 1 << player_name;
m_clients.sendToAll(&notice);
// run scripts
m_script->on_leaveplayer(playersao, reason == CDR_TIMEOUT);
playersao->disconnected();
}
/*
Print out action
*/
{
if (player && reason != CDR_DENY) {
std::ostringstream os(std::ios_base::binary);
std::vector<session_t> clients = m_clients.getClientIDs();
for (const session_t client_id : clients) {
// Get player
RemotePlayer *player = m_env->getPlayer(client_id);
if (!player)
continue;
// Get name of player
os << player->getName() << " ";
}
std::string name = player->getName();
actionstream << name << " "
<< (reason == CDR_TIMEOUT ? "times out." : "leaves game.")
<< " List of players: " << os.str() << std::endl;
if (m_admin_chat)
m_admin_chat->outgoing_queue.push_back(
new ChatEventNick(CET_NICK_REMOVE, name));
}
}
{
MutexAutoLock env_lock(m_env_mutex);
m_clients.DeleteClient(peer_id);
}
}
// Send leave chat message to all remaining clients
if (!message.empty()) {
SendChatMessage(PEER_ID_INEXISTENT,
ChatMessage(CHATMESSAGE_TYPE_ANNOUNCE, message));
}
}
void Server::UpdateCrafting(RemotePlayer *player)
{
InventoryList *clist = player->inventory.getList("craft");
if (!clist || clist->getSize() == 0)
return;
if (!clist->checkModified())
return;
// Get a preview for crafting
ItemStack preview;
InventoryLocation loc;
loc.setPlayer(player->getName());
std::vector<ItemStack> output_replacements;
getCraftingResult(&player->inventory, preview, output_replacements, false, this);
m_env->getScriptIface()->item_CraftPredict(preview, player->getPlayerSAO(),
clist, loc);
InventoryList *plist = player->inventory.getList("craftpreview");
if (plist && plist->getSize() >= 1) {
// Put the new preview in
plist->changeItem(0, preview);
}
}
void Server::handleChatInterfaceEvent(ChatEvent *evt)
{
if (evt->type == CET_NICK_ADD) {
// The terminal informed us of its nick choice
m_admin_nick = ((ChatEventNick *)evt)->nick;
if (!m_script->getAuth(m_admin_nick, NULL, NULL)) {
errorstream << "You haven't set up an account." << std::endl
<< "Please log in using the client as '"
<< m_admin_nick << "' with a secure password." << std::endl
<< "Until then, you can't execute admin tasks via the console," << std::endl
<< "and everybody can claim the user account instead of you," << std::endl
<< "giving them full control over this server." << std::endl;
}
} else {
assert(evt->type == CET_CHAT);
handleAdminChat((ChatEventChat *)evt);
}
}
std::wstring Server::handleChat(const std::string &name, const std::wstring &wname,
std::wstring wmessage, bool check_shout_priv, RemotePlayer *player)
{
// If something goes wrong, this player is to blame
RollbackScopeActor rollback_scope(m_rollback,
std::string("player:") + name);
if (g_settings->getBool("strip_color_codes"))
wmessage = unescape_enriched(wmessage);
if (player) {
switch (player->canSendChatMessage()) {
case RPLAYER_CHATRESULT_FLOODING: {
std::wstringstream ws;
ws << L"You cannot send more messages. You are limited to "
<< g_settings->getFloat("chat_message_limit_per_10sec")
<< L" messages per 10 seconds.";
return ws.str();
}
case RPLAYER_CHATRESULT_KICK:
DenyAccess_Legacy(player->getPeerId(),
L"You have been kicked due to message flooding.");
return L"";
case RPLAYER_CHATRESULT_OK:
break;
default:
FATAL_ERROR("Unhandled chat filtering result found.");
}
}
if (m_max_chatmessage_length > 0
&& wmessage.length() > m_max_chatmessage_length) {
return L"Your message exceed the maximum chat message limit set on the server. "
L"It was refused. Send a shorter message";
}
auto message = trim(wide_to_utf8(wmessage));
if (message.find_first_of("\n\r") != std::wstring::npos) {
return L"New lines are not permitted in chat messages";
}
// Run script hook, exit if script ate the chat message
if (m_script->on_chat_message(name, message))
return L"";
// Line to send
std::wstring line;
// Whether to send line to the player that sent the message, or to all players
bool broadcast_line = true;
if (check_shout_priv && !checkPriv(name, "shout")) {
line += L"-!- You don't have permission to shout.";
broadcast_line = false;
} else {
/*
Workaround for fixing chat on Android. Lua doesn't handle
the Cyrillic alphabet and some characters on older Android devices
*/
#ifdef __ANDROID__
line += L"<" + wname + L"> " + wmessage;
#else
line += narrow_to_wide(m_script->formatChatMessage(name,
wide_to_narrow(wmessage)));
#endif
}
/*
Tell calling method to send the message to sender
*/
if (!broadcast_line)
return line;
/*
Send the message to others
*/
actionstream << "CHAT: " << wide_to_narrow(unescape_enriched(line)) << std::endl;
std::vector<session_t> clients = m_clients.getClientIDs();
/*
Send the message back to the inital sender
if they are using protocol version >= 29
*/
session_t peer_id_to_avoid_sending =
(player ? player->getPeerId() : PEER_ID_INEXISTENT);
if (player && player->protocol_version >= 29)
peer_id_to_avoid_sending = PEER_ID_INEXISTENT;
for (u16 cid : clients) {
if (cid != peer_id_to_avoid_sending)
SendChatMessage(cid, ChatMessage(line));
}
return L"";
}
void Server::handleAdminChat(const ChatEventChat *evt)
{
std::string name = evt->nick;
std::wstring wname = utf8_to_wide(name);
std::wstring wmessage = evt->evt_msg;
std::wstring answer = handleChat(name, wname, wmessage);
// If asked to send answer to sender
if (!answer.empty()) {
m_admin_chat->outgoing_queue.push_back(new ChatEventChat("", answer));
}
}
RemoteClient *Server::getClient(session_t peer_id, ClientState state_min)
{
RemoteClient *client = getClientNoEx(peer_id,state_min);
if(!client)
throw ClientNotFoundException("Client not found");
return client;
}
RemoteClient *Server::getClientNoEx(session_t peer_id, ClientState state_min)
{
return m_clients.getClientNoEx(peer_id, state_min);
}
std::string Server::getPlayerName(session_t peer_id)
{
RemotePlayer *player = m_env->getPlayer(peer_id);
if (!player)
return "[id="+itos(peer_id)+"]";
return player->getName();
}
PlayerSAO *Server::getPlayerSAO(session_t peer_id)
{
RemotePlayer *player = m_env->getPlayer(peer_id);
if (!player)
return NULL;
return player->getPlayerSAO();
}
std::wstring Server::getStatusString()
{
std::wostringstream os(std::ios_base::binary);
os << L"# Server: ";
// Version
os << L"version=" << narrow_to_wide(g_version_string);
// Uptime
os << L", uptime=" << m_uptime.get();
// Max lag estimate
os << L", max_lag=" << (m_env ? m_env->getMaxLagEstimate() : 0);
// Information about clients
bool first = true;
os << L", clients={";
if (m_env) {
std::vector<session_t> clients = m_clients.getClientIDs();
for (session_t client_id : clients) {
RemotePlayer *player = m_env->getPlayer(client_id);
// Get name of player
std::wstring name = L"unknown";
if (player)
name = narrow_to_wide(player->getName());
// Add name to information string
if (!first)
os << L", ";
else
first = false;
os << name;
}
}
os << L"}";
if (m_env && !((ServerMap*)(&m_env->getMap()))->isSavingEnabled())
os << std::endl << L"# Server: " << " WARNING: Map saving is disabled.";
if (!g_settings->get("motd").empty())
os << std::endl << L"# Server: " << narrow_to_wide(g_settings->get("motd"));
return os.str();
}
std::set<std::string> Server::getPlayerEffectivePrivs(const std::string &name)
{
std::set<std::string> privs;
m_script->getAuth(name, NULL, &privs);
return privs;
}
bool Server::checkPriv(const std::string &name, const std::string &priv)
{
std::set<std::string> privs = getPlayerEffectivePrivs(name);
return (privs.count(priv) != 0);
}
void Server::reportPrivsModified(const std::string &name)
{
if (name.empty()) {
std::vector<session_t> clients = m_clients.getClientIDs();
for (const session_t client_id : clients) {
RemotePlayer *player = m_env->getPlayer(client_id);
reportPrivsModified(player->getName());
}
} else {
RemotePlayer *player = m_env->getPlayer(name.c_str());
if (!player)
return;
SendPlayerPrivileges(player->getPeerId());
PlayerSAO *sao = player->getPlayerSAO();
if(!sao)
return;
sao->updatePrivileges(
getPlayerEffectivePrivs(name),
isSingleplayer());
}
}
void Server::reportInventoryFormspecModified(const std::string &name)
{
RemotePlayer *player = m_env->getPlayer(name.c_str());
if (!player)
return;
SendPlayerInventoryFormspec(player->getPeerId());
}
void Server::reportFormspecPrependModified(const std::string &name)
{
RemotePlayer *player = m_env->getPlayer(name.c_str());
if (!player)
return;
SendPlayerFormspecPrepend(player->getPeerId());
}
void Server::setIpBanned(const std::string &ip, const std::string &name)
{
m_banmanager->add(ip, name);
}
void Server::unsetIpBanned(const std::string &ip_or_name)
{
m_banmanager->remove(ip_or_name);
}
std::string Server::getBanDescription(const std::string &ip_or_name)
{
return m_banmanager->getBanDescription(ip_or_name);
}
void Server::notifyPlayer(const char *name, const std::wstring &msg)
{
// m_env will be NULL if the server is initializing
if (!m_env)
return;
if (m_admin_nick == name && !m_admin_nick.empty()) {
m_admin_chat->outgoing_queue.push_back(new ChatEventChat("", msg));
}
RemotePlayer *player = m_env->getPlayer(name);
if (!player) {
return;
}
if (player->getPeerId() == PEER_ID_INEXISTENT)
return;
SendChatMessage(player->getPeerId(), ChatMessage(msg));
}
bool Server::showFormspec(const char *playername, const std::string &formspec,
const std::string &formname)
{
// m_env will be NULL if the server is initializing
if (!m_env)
return false;
RemotePlayer *player = m_env->getPlayer(playername);
if (!player)
return false;
SendShowFormspecMessage(player->getPeerId(), formspec, formname);
return true;
}
u32 Server::hudAdd(RemotePlayer *player, HudElement *form)
{
if (!player)
return -1;
u32 id = player->addHud(form);
SendHUDAdd(player->getPeerId(), id, form);
return id;
}
bool Server::hudRemove(RemotePlayer *player, u32 id) {
if (!player)
return false;
HudElement* todel = player->removeHud(id);
if (!todel)
return false;
delete todel;
SendHUDRemove(player->getPeerId(), id);
return true;
}
bool Server::hudChange(RemotePlayer *player, u32 id, HudElementStat stat, void *data)
{
if (!player)
return false;
SendHUDChange(player->getPeerId(), id, stat, data);
return true;
}
bool Server::hudSetFlags(RemotePlayer *player, u32 flags, u32 mask)
{
if (!player)
return false;
SendHUDSetFlags(player->getPeerId(), flags, mask);
player->hud_flags &= ~mask;
player->hud_flags |= flags;
PlayerSAO* playersao = player->getPlayerSAO();
if (!playersao)
return false;
m_script->player_event(playersao, "hud_changed");
return true;
}
bool Server::hudSetHotbarItemcount(RemotePlayer *player, s32 hotbar_itemcount)
{
if (!player)
return false;
if (hotbar_itemcount <= 0 || hotbar_itemcount > HUD_HOTBAR_ITEMCOUNT_MAX)
return false;
player->setHotbarItemcount(hotbar_itemcount);
std::ostringstream os(std::ios::binary);
writeS32(os, hotbar_itemcount);
SendHUDSetParam(player->getPeerId(), HUD_PARAM_HOTBAR_ITEMCOUNT, os.str());
return true;
}
void Server::hudSetHotbarImage(RemotePlayer *player, const std::string &name)
{
if (!player)
return;
player->setHotbarImage(name);
SendHUDSetParam(player->getPeerId(), HUD_PARAM_HOTBAR_IMAGE, name);
}
void Server::hudSetHotbarSelectedImage(RemotePlayer *player, const std::string &name)
{
if (!player)
return;
player->setHotbarSelectedImage(name);
SendHUDSetParam(player->getPeerId(), HUD_PARAM_HOTBAR_SELECTED_IMAGE, name);
}
Address Server::getPeerAddress(session_t peer_id)
{
return m_con->GetPeerAddress(peer_id);
}
void Server::setLocalPlayerAnimations(RemotePlayer *player,
v2s32 animation_frames[4], f32 frame_speed)
{
sanity_check(player);
player->setLocalAnimations(animation_frames, frame_speed);
SendLocalPlayerAnimations(player->getPeerId(), animation_frames, frame_speed);
}
void Server::setPlayerEyeOffset(RemotePlayer *player, const v3f &first, const v3f &third)
{
sanity_check(player);
player->eye_offset_first = first;
player->eye_offset_third = third;
SendEyeOffset(player->getPeerId(), first, third);
}
void Server::setSky(RemotePlayer *player, const SkyboxParams &params)
{
sanity_check(player);
player->setSky(params);
SendSetSky(player->getPeerId(), params);
}
void Server::setSun(RemotePlayer *player, const SunParams &params)
{
sanity_check(player);
player->setSun(params);
SendSetSun(player->getPeerId(), params);
}
void Server::setMoon(RemotePlayer *player, const MoonParams &params)
{
sanity_check(player);
player->setMoon(params);
SendSetMoon(player->getPeerId(), params);
}
void Server::setStars(RemotePlayer *player, const StarParams &params)
{
sanity_check(player);
player->setStars(params);
SendSetStars(player->getPeerId(), params);
}
void Server::setClouds(RemotePlayer *player, const CloudParams &params)
{
sanity_check(player);
player->setCloudParams(params);
SendCloudParams(player->getPeerId(), params);
}
bool Server::overrideDayNightRatio(RemotePlayer *player, bool do_override,
float ratio)
{
if (!player)
return false;
player->overrideDayNightRatio(do_override, ratio);
SendOverrideDayNightRatio(player->getPeerId(), do_override, ratio);
return true;
}
void Server::notifyPlayers(const std::wstring &msg)
{
SendChatMessage(PEER_ID_INEXISTENT, ChatMessage(msg));
}
void Server::spawnParticle(const std::string &playername, v3f pos,
v3f velocity, v3f acceleration,
float expirationtime, float size, bool
collisiondetection, bool collision_removal, bool object_collision,
bool vertical, const std::string &texture,
const struct TileAnimationParams &animation, u8 glow)
{
// m_env will be NULL if the server is initializing
if (!m_env)
return;
session_t peer_id = PEER_ID_INEXISTENT;
u16 proto_ver = 0;
if (!playername.empty()) {
RemotePlayer *player = m_env->getPlayer(playername.c_str());
if (!player)
return;
peer_id = player->getPeerId();
proto_ver = player->protocol_version;
}
SendSpawnParticle(peer_id, proto_ver, pos, velocity, acceleration,
expirationtime, size, collisiondetection, collision_removal,
object_collision, vertical, texture, animation, glow);
}
u32 Server::addParticleSpawner(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, bool collision_removal, bool object_collision,
ServerActiveObject *attached, bool vertical, const std::string &texture,
const std::string &playername, const struct TileAnimationParams &animation,
u8 glow)
{
// m_env will be NULL if the server is initializing
if (!m_env)
return -1;
session_t peer_id = PEER_ID_INEXISTENT;
u16 proto_ver = 0;
if (!playername.empty()) {
RemotePlayer *player = m_env->getPlayer(playername.c_str());
if (!player)
return -1;
peer_id = player->getPeerId();
proto_ver = player->protocol_version;
}
u16 attached_id = attached ? attached->getId() : 0;
u32 id;
if (attached_id == 0)
id = m_env->addParticleSpawner(spawntime);
else
id = m_env->addParticleSpawner(spawntime, attached_id);
SendAddParticleSpawner(peer_id, proto_ver, amount, spawntime,
minpos, maxpos, minvel, maxvel, minacc, maxacc,
minexptime, maxexptime, minsize, maxsize, collisiondetection,
collision_removal, object_collision, attached_id, vertical,
texture, id, animation, glow);
return id;
}
void Server::deleteParticleSpawner(const std::string &playername, u32 id)
{
// m_env will be NULL if the server is initializing
if (!m_env)
throw ServerError("Can't delete particle spawners during initialisation!");
session_t peer_id = PEER_ID_INEXISTENT;
if (!playername.empty()) {
RemotePlayer *player = m_env->getPlayer(playername.c_str());
if (!player)
return;
peer_id = player->getPeerId();
}
m_env->deleteParticleSpawner(id);
SendDeleteParticleSpawner(peer_id, id);
}
Inventory* Server::createDetachedInventory(const std::string &name, const std::string &player)
{
if(m_detached_inventories.count(name) > 0){
infostream<<"Server clearing detached inventory \""<<name<<"\""<<std::endl;
delete m_detached_inventories[name];
} else {
infostream<<"Server creating detached inventory \""<<name<<"\""<<std::endl;
}
Inventory *inv = new Inventory(m_itemdef);
sanity_check(inv);
m_detached_inventories[name] = inv;
if (!player.empty())
m_detached_inventories_player[name] = player;
//TODO find a better way to do this
sendDetachedInventory(name,PEER_ID_INEXISTENT);
return inv;
}
bool Server::removeDetachedInventory(const std::string &name)
{
const auto &inv_it = m_detached_inventories.find(name);
if (inv_it == m_detached_inventories.end())
return false;
delete inv_it->second;
m_detached_inventories.erase(inv_it);
if (!m_env) // Mods are not done loading
return true;
const auto &player_it = m_detached_inventories_player.find(name);
if (player_it != m_detached_inventories_player.end()) {
RemotePlayer *player = m_env->getPlayer(player_it->second.c_str());
if (player && player->getPeerId() != PEER_ID_INEXISTENT)
sendDetachedInventory(name, player->getPeerId());
m_detached_inventories_player.erase(player_it);
} else {
// Notify all players about the change
sendDetachedInventory(name, PEER_ID_INEXISTENT);
}
return true;
}
// actions: time-reversed list
// Return value: success/failure
bool Server::rollbackRevertActions(const std::list<RollbackAction> &actions,
std::list<std::string> *log)
{
infostream<<"Server::rollbackRevertActions(len="<<actions.size()<<")"<<std::endl;
ServerMap *map = (ServerMap*)(&m_env->getMap());
// Fail if no actions to handle
if (actions.empty()) {
assert(log);
log->push_back("Nothing to do.");
return false;
}
int num_tried = 0;
int num_failed = 0;
for (const RollbackAction &action : actions) {
num_tried++;
bool success = action.applyRevert(map, this, this);
if(!success){
num_failed++;
std::ostringstream os;
os<<"Revert of step ("<<num_tried<<") "<<action.toString()<<" failed";
infostream<<"Map::rollbackRevertActions(): "<<os.str()<<std::endl;
if (log)
log->push_back(os.str());
}else{
std::ostringstream os;
os<<"Successfully reverted step ("<<num_tried<<") "<<action.toString();
infostream<<"Map::rollbackRevertActions(): "<<os.str()<<std::endl;
if (log)
log->push_back(os.str());
}
}
infostream<<"Map::rollbackRevertActions(): "<<num_failed<<"/"<<num_tried
<<" failed"<<std::endl;
// Call it done if less than half failed
return num_failed <= num_tried/2;
}
// IGameDef interface
// Under envlock
IItemDefManager *Server::getItemDefManager()
{
return m_itemdef;
}
const NodeDefManager *Server::getNodeDefManager()
{
return m_nodedef;
}
ICraftDefManager *Server::getCraftDefManager()
{
return m_craftdef;
}
u16 Server::allocateUnknownNodeId(const std::string &name)
{
return m_nodedef->allocateDummy(name);
}
IWritableItemDefManager *Server::getWritableItemDefManager()
{
return m_itemdef;
}
NodeDefManager *Server::getWritableNodeDefManager()
{
return m_nodedef;
}
IWritableCraftDefManager *Server::getWritableCraftDefManager()
{
return m_craftdef;
}
const std::vector<ModSpec> & Server::getMods() const
{
return m_modmgr->getMods();
}
const ModSpec *Server::getModSpec(const std::string &modname) const
{
return m_modmgr->getModSpec(modname);
}
void Server::getModNames(std::vector<std::string> &modlist)
{
m_modmgr->getModNames(modlist);
}
std::string Server::getBuiltinLuaPath()
{
return porting::path_share + DIR_DELIM + "builtin";
}
std::string Server::getModStoragePath() const
{
return m_path_world + DIR_DELIM + "mod_storage";
}
v3f Server::findSpawnPos()
{
ServerMap &map = m_env->getServerMap();
v3f nodeposf;
if (g_settings->getV3FNoEx("static_spawnpoint", nodeposf))
return nodeposf * BS;
bool is_good = false;
// Limit spawn range to mapgen edges (determined by 'mapgen_limit')
s32 range_max = map.getMapgenParams()->getSpawnRangeMax();
// Try to find a good place a few times
for (s32 i = 0; i < 4000 && !is_good; i++) {
s32 range = MYMIN(1 + i, range_max);
// We're going to try to throw the player to this position
v2s16 nodepos2d = v2s16(
-range + (myrand() % (range * 2)),
-range + (myrand() % (range * 2)));
// Get spawn level at point
s16 spawn_level = m_emerge->getSpawnLevelAtPoint(nodepos2d);
// Continue if MAX_MAP_GENERATION_LIMIT was returned by the mapgen to
// signify an unsuitable spawn position, or if outside limits.
if (spawn_level >= MAX_MAP_GENERATION_LIMIT ||
spawn_level <= -MAX_MAP_GENERATION_LIMIT)
continue;
v3s16 nodepos(nodepos2d.X, spawn_level, nodepos2d.Y);
// Consecutive empty nodes
s32 air_count = 0;
// Search upwards from 'spawn level' for 2 consecutive empty nodes, to
// avoid obstructions in already-generated mapblocks.
// In ungenerated mapblocks consisting of 'ignore' nodes, there will be
// no obstructions, but mapgen decorations are generated after spawn so
// the player may end up inside one.
for (s32 i = 0; i < 8; i++) {
v3s16 blockpos = getNodeBlockPos(nodepos);
map.emergeBlock(blockpos, true);
content_t c = map.getNode(nodepos).getContent();
// In generated mapblocks allow spawn in all 'airlike' drawtype nodes.
// In ungenerated mapblocks allow spawn in 'ignore' nodes.
if (m_nodedef->get(c).drawtype == NDT_AIRLIKE || c == CONTENT_IGNORE) {
air_count++;
if (air_count >= 2) {
// Spawn in lower empty node
nodepos.Y--;
nodeposf = intToFloat(nodepos, BS);
// Don't spawn the player outside map boundaries
if (objectpos_over_limit(nodeposf))
// Exit this loop, positions above are probably over limit
break;
// Good position found, cause an exit from main loop
is_good = true;
break;
}
} else {
air_count = 0;
}
nodepos.Y++;
}
}
if (is_good)
return nodeposf;
// No suitable spawn point found, return fallback 0,0,0
return v3f(0.0f, 0.0f, 0.0f);
}
void Server::requestShutdown(const std::string &msg, bool reconnect, float delay)
{
if (delay == 0.0f) {
// No delay, shutdown immediately
m_shutdown_state.is_requested = true;
// only print to the infostream, a chat message saying
// "Server Shutting Down" is sent when the server destructs.
infostream << "*** Immediate Server shutdown requested." << std::endl;
} else if (delay < 0.0f && m_shutdown_state.isTimerRunning()) {
// Negative delay, cancel shutdown if requested
m_shutdown_state.reset();
std::wstringstream ws;
ws << L"*** Server shutdown canceled.";
infostream << wide_to_utf8(ws.str()).c_str() << std::endl;
SendChatMessage(PEER_ID_INEXISTENT, ws.str());
// m_shutdown_* are already handled, skip.
return;
} else if (delay > 0.0f) {
// Positive delay, tell the clients when the server will shut down
std::wstringstream ws;
ws << L"*** Server shutting down in "
<< duration_to_string(myround(delay)).c_str()
<< ".";
infostream << wide_to_utf8(ws.str()).c_str() << std::endl;
SendChatMessage(PEER_ID_INEXISTENT, ws.str());
}
m_shutdown_state.trigger(delay, msg, reconnect);
}
PlayerSAO* Server::emergePlayer(const char *name, session_t peer_id, u16 proto_version)
{
/*
Try to get an existing player
*/
RemotePlayer *player = m_env->getPlayer(name);
// If player is already connected, cancel
if (player && player->getPeerId() != PEER_ID_INEXISTENT) {
infostream<<"emergePlayer(): Player already connected"<<std::endl;
return NULL;
}
/*
If player with the wanted peer_id already exists, cancel.
*/
if (m_env->getPlayer(peer_id)) {
infostream<<"emergePlayer(): Player with wrong name but same"
" peer_id already exists"<<std::endl;
return NULL;
}
if (!player) {
player = new RemotePlayer(name, idef());
}
bool newplayer = false;
// Load player
PlayerSAO *playersao = m_env->loadPlayer(player, &newplayer, peer_id, isSingleplayer());
// Complete init with server parts
playersao->finalize(player, getPlayerEffectivePrivs(player->getName()));
player->protocol_version = proto_version;
/* Run scripts */
if (newplayer) {
m_script->on_newplayer(playersao);
}
return playersao;
}
bool Server::registerModStorage(ModMetadata *storage)
{
if (m_mod_storages.find(storage->getModName()) != m_mod_storages.end()) {
errorstream << "Unable to register same mod storage twice. Storage name: "
<< storage->getModName() << std::endl;
return false;
}
m_mod_storages[storage->getModName()] = storage;
return true;
}
void Server::unregisterModStorage(const std::string &name)
{
std::unordered_map<std::string, ModMetadata *>::const_iterator it = m_mod_storages.find(name);
if (it != m_mod_storages.end()) {
// Save unconditionaly on unregistration
it->second->save(getModStoragePath());
m_mod_storages.erase(name);
}
}
void dedicated_server_loop(Server &server, bool &kill)
{
verbosestream<<"dedicated_server_loop()"<<std::endl;
IntervalLimiter m_profiler_interval;
static thread_local const float steplen =
g_settings->getFloat("dedicated_server_step");
static thread_local const float profiler_print_interval =
g_settings->getFloat("profiler_print_interval");
/*
* The dedicated server loop only does time-keeping (in Server::step) and
* provides a way to main.cpp to kill the server externally (bool &kill).
*/
for(;;) {
// This is kind of a hack but can be done like this
// because server.step() is very light
sleep_ms((int)(steplen*1000.0));
server.step(steplen);
if (server.isShutdownRequested() || kill)
break;
/*
Profiler
*/
if (profiler_print_interval != 0) {
if(m_profiler_interval.step(steplen, profiler_print_interval))
{
infostream<<"Profiler:"<<std::endl;
g_profiler->print(infostream);
g_profiler->clear();
}
}
}
infostream << "Dedicated server quitting" << std::endl;
#if USE_CURL
if (g_settings->getBool("server_announce"))
ServerList::sendAnnounce(ServerList::AA_DELETE,
server.m_bind_addr.getPort());
#endif
}
/*
* Mod channels
*/
bool Server::joinModChannel(const std::string &channel)
{
return m_modchannel_mgr->joinChannel(channel, PEER_ID_SERVER) &&
m_modchannel_mgr->setChannelState(channel, MODCHANNEL_STATE_READ_WRITE);
}
bool Server::leaveModChannel(const std::string &channel)
{
return m_modchannel_mgr->leaveChannel(channel, PEER_ID_SERVER);
}
bool Server::sendModChannelMessage(const std::string &channel, const std::string &message)
{
if (!m_modchannel_mgr->canWriteOnChannel(channel))
return false;
broadcastModChannelMessage(channel, message, PEER_ID_SERVER);
return true;
}
ModChannel* Server::getModChannel(const std::string &channel)
{
return m_modchannel_mgr->getModChannel(channel);
}
void Server::broadcastModChannelMessage(const std::string &channel,
const std::string &message, session_t from_peer)
{
const std::vector<u16> &peers = m_modchannel_mgr->getChannelPeers(channel);
if (peers.empty())
return;
if (message.size() > STRING_MAX_LEN) {
warningstream << "ModChannel message too long, dropping before sending "
<< " (" << message.size() << " > " << STRING_MAX_LEN << ", channel: "
<< channel << ")" << std::endl;
return;
}
std::string sender;
if (from_peer != PEER_ID_SERVER) {
sender = getPlayerName(from_peer);
}
NetworkPacket resp_pkt(TOCLIENT_MODCHANNEL_MSG,
2 + channel.size() + 2 + sender.size() + 2 + message.size());
resp_pkt << channel << sender << message;
for (session_t peer_id : peers) {
// Ignore sender
if (peer_id == from_peer)
continue;
Send(peer_id, &resp_pkt);
}
if (from_peer != PEER_ID_SERVER) {
m_script->on_modchannel_message(channel, sender, message);
}
}
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