--- /dev/null
+/*
+Minetest
+Copyright (C) 2010-2014 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 <sstream>
+#include "clientiface.h"
+#include "network/connection.h"
+#include "network/serveropcodes.h"
+#include "remoteplayer.h"
+#include "settings.h"
+#include "mapblock.h"
+#include "serverenvironment.h"
+#include "map.h"
+#include "emerge.h"
+#include "server/luaentity_sao.h"
+#include "server/player_sao.h"
+#include "log.h"
+#include "util/srp.h"
+#include "face_position_cache.h"
+
+const char *ClientInterface::statenames[] = {
+ "Invalid",
+ "Disconnecting",
+ "Denied",
+ "Created",
+ "AwaitingInit2",
+ "HelloSent",
+ "InitDone",
+ "DefinitionsSent",
+ "Active",
+ "SudoMode",
+};
+
+
+
+std::string ClientInterface::state2Name(ClientState state)
+{
+ return statenames[state];
+}
+
+RemoteClient::RemoteClient() :
+ m_max_simul_sends(g_settings->getU16("max_simultaneous_block_sends_per_client")),
+ m_min_time_from_building(
+ g_settings->getFloat("full_block_send_enable_min_time_from_building")),
+ m_max_send_distance(g_settings->getS16("max_block_send_distance")),
+ m_block_optimize_distance(g_settings->getS16("block_send_optimize_distance")),
+ m_max_gen_distance(g_settings->getS16("max_block_generate_distance")),
+ m_occ_cull(g_settings->getBool("server_side_occlusion_culling"))
+{
+}
+
+void RemoteClient::ResendBlockIfOnWire(v3s16 p)
+{
+ // if this block is on wire, mark it for sending again as soon as possible
+ if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
+ SetBlockNotSent(p);
+ }
+}
+
+LuaEntitySAO *getAttachedObject(PlayerSAO *sao, ServerEnvironment *env)
+{
+ if (!sao->isAttached())
+ return nullptr;
+
+ int id;
+ std::string bone;
+ v3f dummy;
+ bool force_visible;
+ sao->getAttachment(&id, &bone, &dummy, &dummy, &force_visible);
+ ServerActiveObject *ao = env->getActiveObject(id);
+ while (id && ao) {
+ ao->getAttachment(&id, &bone, &dummy, &dummy, &force_visible);
+ if (id)
+ ao = env->getActiveObject(id);
+ }
+ return dynamic_cast<LuaEntitySAO *>(ao);
+}
+
+void RemoteClient::GetNextBlocks (
+ ServerEnvironment *env,
+ EmergeManager * emerge,
+ float dtime,
+ std::vector<PrioritySortedBlockTransfer> &dest)
+{
+ // Increment timers
+ m_nothing_to_send_pause_timer -= dtime;
+ m_map_send_completion_timer += dtime;
+
+ if (m_nothing_to_send_pause_timer >= 0)
+ return;
+
+ RemotePlayer *player = env->getPlayer(peer_id);
+ // This can happen sometimes; clients and players are not in perfect sync.
+ if (!player)
+ return;
+
+ PlayerSAO *sao = player->getPlayerSAO();
+ if (!sao)
+ return;
+
+ // Won't send anything if already sending
+ if (m_blocks_sending.size() >= m_max_simul_sends) {
+ //infostream<<"Not sending any blocks, Queue full."<<std::endl;
+ return;
+ }
+
+ v3f playerpos = sao->getBasePosition();
+ // if the player is attached, get the velocity from the attached object
+ LuaEntitySAO *lsao = getAttachedObject(sao, env);
+ const v3f &playerspeed = lsao? lsao->getVelocity() : player->getSpeed();
+ v3f playerspeeddir(0,0,0);
+ if (playerspeed.getLength() > 1.0f * BS)
+ playerspeeddir = playerspeed / playerspeed.getLength();
+ // Predict to next block
+ v3f playerpos_predicted = playerpos + playerspeeddir * (MAP_BLOCKSIZE * BS);
+
+ v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
+
+ v3s16 center = getNodeBlockPos(center_nodepos);
+
+ // Camera position and direction
+ v3f camera_pos = sao->getEyePosition();
+ v3f camera_dir = v3f(0,0,1);
+ camera_dir.rotateYZBy(sao->getLookPitch());
+ camera_dir.rotateXZBy(sao->getRotation().Y);
+
+ u16 max_simul_sends_usually = m_max_simul_sends;
+
+ /*
+ Check the time from last addNode/removeNode.
+
+ Decrease send rate if player is building stuff.
+ */
+ m_time_from_building += dtime;
+ if (m_time_from_building < m_min_time_from_building) {
+ max_simul_sends_usually
+ = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
+ }
+
+ /*
+ Number of blocks sending + number of blocks selected for sending
+ */
+ u32 num_blocks_selected = m_blocks_sending.size();
+
+ /*
+ next time d will be continued from the d from which the nearest
+ unsent block was found this time.
+
+ This is because not necessarily any of the blocks found this
+ time are actually sent.
+ */
+ s32 new_nearest_unsent_d = -1;
+
+ // Get view range and camera fov (radians) from the client
+ s16 wanted_range = sao->getWantedRange() + 1;
+ float camera_fov = sao->getFov();
+
+ /*
+ Get the starting value of the block finder radius.
+ */
+ if (m_last_center != center) {
+ m_nearest_unsent_d = 0;
+ m_last_center = center;
+ }
+ // reset the unsent distance if the view angle has changed more that 10% of the fov
+ // (this matches isBlockInSight which allows for an extra 10%)
+ if (camera_dir.dotProduct(m_last_camera_dir) < std::cos(camera_fov * 0.1f)) {
+ m_nearest_unsent_d = 0;
+ m_last_camera_dir = camera_dir;
+ }
+ if (m_nearest_unsent_d > 0) {
+ // make sure any blocks modified since the last time we sent blocks are resent
+ for (const v3s16 &p : m_blocks_modified) {
+ m_nearest_unsent_d = std::min(m_nearest_unsent_d, center.getDistanceFrom(p));
+ }
+ }
+ m_blocks_modified.clear();
+
+ s16 d_start = m_nearest_unsent_d;
+
+ // Distrust client-sent FOV and get server-set player object property
+ // zoom FOV (degrees) as a check to avoid hacked clients using FOV to load
+ // distant world.
+ // (zoom is disabled by value 0)
+ float prop_zoom_fov = sao->getZoomFOV() < 0.001f ?
+ 0.0f :
+ std::max(camera_fov, sao->getZoomFOV() * core::DEGTORAD);
+
+ const s16 full_d_max = std::min(adjustDist(m_max_send_distance, prop_zoom_fov),
+ wanted_range);
+ const s16 d_opt = std::min(adjustDist(m_block_optimize_distance, prop_zoom_fov),
+ wanted_range);
+ const s16 d_blocks_in_sight = full_d_max * BS * MAP_BLOCKSIZE;
+
+ s16 d_max_gen = std::min(adjustDist(m_max_gen_distance, prop_zoom_fov),
+ wanted_range);
+
+ s16 d_max = full_d_max;
+
+ // Don't loop very much at a time
+ s16 max_d_increment_at_time = 2;
+ if (d_max > d_start + max_d_increment_at_time)
+ d_max = d_start + max_d_increment_at_time;
+
+ // cos(angle between velocity and camera) * |velocity|
+ // Limit to 0.0f in case player moves backwards.
+ f32 dot = rangelim(camera_dir.dotProduct(playerspeed), 0.0f, 300.0f);
+
+ // Reduce the field of view when a player moves and looks forward.
+ // limit max fov effect to 50%, 60% at 20n/s fly speed
+ camera_fov = camera_fov / (1 + dot / 300.0f);
+
+ s32 nearest_emerged_d = -1;
+ s32 nearest_emergefull_d = -1;
+ s32 nearest_sent_d = -1;
+ //bool queue_is_full = false;
+
+ const v3s16 cam_pos_nodes = floatToInt(camera_pos, BS);
+
+ s16 d;
+ for (d = d_start; d <= d_max; d++) {
+ /*
+ Get the border/face dot coordinates of a "d-radiused"
+ box
+ */
+ std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
+
+ std::vector<v3s16>::iterator li;
+ for (li = list.begin(); li != list.end(); ++li) {
+ v3s16 p = *li + center;
+
+ /*
+ Send throttling
+ - Don't allow too many simultaneous transfers
+ - EXCEPT when the blocks are very close
+
+ Also, don't send blocks that are already flying.
+ */
+
+ // Start with the usual maximum
+ u16 max_simul_dynamic = max_simul_sends_usually;
+
+ // If block is very close, allow full maximum
+ if (d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
+ max_simul_dynamic = m_max_simul_sends;
+
+ // Don't select too many blocks for sending
+ if (num_blocks_selected >= max_simul_dynamic) {
+ //queue_is_full = true;
+ goto queue_full_break;
+ }
+
+ // Don't send blocks that are currently being transferred
+ if (m_blocks_sending.find(p) != m_blocks_sending.end())
+ continue;
+
+ /*
+ Do not go over max mapgen limit
+ */
+ if (blockpos_over_max_limit(p))
+ continue;
+
+ // If this is true, inexistent block will be made from scratch
+ bool generate = d <= d_max_gen;
+
+ /*
+ Don't generate or send if not in sight
+ FIXME This only works if the client uses a small enough
+ FOV setting. The default of 72 degrees is fine.
+ Also retrieve a smaller view cone in the direction of the player's
+ movement.
+ (0.1 is about 4 degrees)
+ */
+ f32 dist;
+ if (!(isBlockInSight(p, camera_pos, camera_dir, camera_fov,
+ d_blocks_in_sight, &dist) ||
+ (playerspeed.getLength() > 1.0f * BS &&
+ isBlockInSight(p, camera_pos, playerspeeddir, 0.1f,
+ d_blocks_in_sight)))) {
+ continue;
+ }
+
+ /*
+ Check if map has this block
+ */
+ MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
+ if (block) {
+ // First: Reset usage timer, this block will be of use in the future.
+ block->resetUsageTimer();
+ }
+
+ /*
+ Don't send already sent blocks
+ */
+ if (m_blocks_sent.find(p) != m_blocks_sent.end())
+ continue;
+
+ bool block_not_found = false;
+ if (block) {
+ // Check whether the block exists (with data)
+ if (!block->isGenerated())
+ block_not_found = true;
+
+ /*
+ If block is not close, don't send it unless it is near
+ ground level.
+
+ Block is near ground level if night-time mesh
+ differs from day-time mesh.
+ */
+ if (d >= d_opt) {
+ if (!block->getIsUnderground() && !block->getDayNightDiff())
+ continue;
+ }
+
+ if (m_occ_cull && !block_not_found &&
+ env->getMap().isBlockOccluded(block, cam_pos_nodes)) {
+ continue;
+ }
+ }
+
+ /*
+ If block has been marked to not exist on disk (dummy) or is
+ not generated and generating new ones is not wanted, skip block.
+ */
+ if (!generate && block_not_found) {
+ // get next one.
+ continue;
+ }
+
+ /*
+ Add inexistent block to emerge queue.
+ */
+ if (block == NULL || block_not_found) {
+ if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
+ if (nearest_emerged_d == -1)
+ nearest_emerged_d = d;
+ } else {
+ if (nearest_emergefull_d == -1)
+ nearest_emergefull_d = d;
+ goto queue_full_break;
+ }
+
+ // get next one.
+ continue;
+ }
+
+ if (nearest_sent_d == -1)
+ nearest_sent_d = d;
+
+ /*
+ Add block to send queue
+ */
+ PrioritySortedBlockTransfer q((float)dist, p, peer_id);
+
+ dest.push_back(q);
+
+ num_blocks_selected += 1;
+ }
+ }
+queue_full_break:
+
+ // If nothing was found for sending and nothing was queued for
+ // emerging, continue next time browsing from here
+ if (nearest_emerged_d != -1) {
+ new_nearest_unsent_d = nearest_emerged_d;
+ } else if (nearest_emergefull_d != -1) {
+ new_nearest_unsent_d = nearest_emergefull_d;
+ } else {
+ if (d > full_d_max) {
+ new_nearest_unsent_d = 0;
+ m_nothing_to_send_pause_timer = 2.0f;
+ infostream << "Server: map update for player " << m_name << " RemoteClient " << peer_id << ", time: " << m_map_send_completion_timer << "s" << std::endl;
+ m_map_send_completion_timer = 0.0f;
+ } else {
+ if (nearest_sent_d != -1)
+ new_nearest_unsent_d = nearest_sent_d;
+ else
+ new_nearest_unsent_d = d;
+ }
+ }
+
+ if (new_nearest_unsent_d != -1)
+ m_nearest_unsent_d = new_nearest_unsent_d;
+}
+
+void RemoteClient::GotBlock(v3s16 p)
+{
+ if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
+ m_blocks_sending.erase(p);
+ // only add to sent blocks if it actually was sending
+ // (it might have been modified since)
+ m_blocks_sent.insert(p);
+ } else {
+ m_excess_gotblocks++;
+ }
+}
+
+void RemoteClient::SentBlock(v3s16 p)
+{
+ if (m_blocks_sending.find(p) == m_blocks_sending.end())
+ m_blocks_sending[p] = 0.0f;
+ else
+ infostream<<"RemoteClient::SentBlock(): Sent block"
+ " already in m_blocks_sending"<<std::endl;
+}
+
+void RemoteClient::SetBlockNotSent(v3s16 p)
+{
+ m_nothing_to_send_pause_timer = 0;
+
+ // remove the block from sending and sent sets,
+ // and mark as modified if found
+ if (m_blocks_sending.erase(p) + m_blocks_sent.erase(p) > 0)
+ m_blocks_modified.insert(p);
+}
+
+void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
+{
+ m_nothing_to_send_pause_timer = 0;
+
+ for (auto &block : blocks) {
+ v3s16 p = block.first;
+ // remove the block from sending and sent sets,
+ // and mark as modified if found
+ if (m_blocks_sending.erase(p) + m_blocks_sent.erase(p) > 0)
+ m_blocks_modified.insert(p);
+ }
+}
+
+void RemoteClient::notifyEvent(ClientStateEvent event)
+{
+ std::ostringstream myerror;
+ switch (m_state)
+ {
+ case CS_Invalid:
+ //intentionally do nothing
+ break;
+ case CS_Created:
+ switch (event) {
+ case CSE_Hello:
+ m_state = CS_HelloSent;
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ break;
+ /* GotInit2 SetDefinitionsSent SetMediaSent */
+ default:
+ myerror << "Created: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ }
+ break;
+ case CS_Denied:
+ /* don't do anything if in denied state */
+ break;
+ case CS_HelloSent:
+ switch(event)
+ {
+ case CSE_AuthAccept:
+ m_state = CS_AwaitingInit2;
+ resetChosenMech();
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ resetChosenMech();
+ break;
+ default:
+ myerror << "HelloSent: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ }
+ break;
+ case CS_AwaitingInit2:
+ switch(event)
+ {
+ case CSE_GotInit2:
+ confirmSerializationVersion();
+ m_state = CS_InitDone;
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ break;
+
+ /* Init SetDefinitionsSent SetMediaSent */
+ default:
+ myerror << "InitSent: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ }
+ break;
+
+ case CS_InitDone:
+ switch(event)
+ {
+ case CSE_SetDefinitionsSent:
+ m_state = CS_DefinitionsSent;
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ break;
+
+ /* Init GotInit2 SetMediaSent */
+ default:
+ myerror << "InitDone: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ }
+ break;
+ case CS_DefinitionsSent:
+ switch(event)
+ {
+ case CSE_SetClientReady:
+ m_state = CS_Active;
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ break;
+ /* Init GotInit2 SetDefinitionsSent */
+ default:
+ myerror << "DefinitionsSent: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ }
+ break;
+ case CS_Active:
+ switch(event)
+ {
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SudoSuccess:
+ m_state = CS_SudoMode;
+ resetChosenMech();
+ break;
+ /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
+ default:
+ myerror << "Active: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ break;
+ }
+ break;
+ case CS_SudoMode:
+ switch(event)
+ {
+ case CSE_SetDenied:
+ m_state = CS_Denied;
+ break;
+ case CSE_Disconnect:
+ m_state = CS_Disconnecting;
+ break;
+ case CSE_SudoLeave:
+ m_state = CS_Active;
+ break;
+ default:
+ myerror << "Active: Invalid client state transition! " << event;
+ throw ClientStateError(myerror.str());
+ break;
+ }
+ break;
+ case CS_Disconnecting:
+ /* we are already disconnecting */
+ break;
+ }
+}
+
+void RemoteClient::resetChosenMech()
+{
+ if (auth_data) {
+ srp_verifier_delete((SRPVerifier *) auth_data);
+ auth_data = nullptr;
+ }
+ chosen_mech = AUTH_MECHANISM_NONE;
+}
+
+u64 RemoteClient::uptime() const
+{
+ return porting::getTimeS() - m_connection_time;
+}
+
+ClientInterface::ClientInterface(const std::shared_ptr<con::Connection> & con)
+:
+ m_con(con),
+ m_env(NULL),
+ m_print_info_timer(0.0f)
+{
+
+}
+ClientInterface::~ClientInterface()
+{
+ /*
+ Delete clients
+ */
+ {
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+
+ for (auto &client_it : m_clients) {
+ // Delete client
+ delete client_it.second;
+ }
+ }
+}
+
+std::vector<session_t> ClientInterface::getClientIDs(ClientState min_state)
+{
+ std::vector<session_t> reply;
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+
+ for (const auto &m_client : m_clients) {
+ if (m_client.second->getState() >= min_state)
+ reply.push_back(m_client.second->peer_id);
+ }
+
+ return reply;
+}
+
+void ClientInterface::markBlockposAsNotSent(const v3s16 &pos)
+{
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+ for (const auto &client : m_clients) {
+ if (client.second->getState() >= CS_Active)
+ client.second->SetBlockNotSent(pos);
+ }
+}
+
+/**
+ * Verify if user limit was reached.
+ * User limit count all clients from HelloSent state (MT protocol user) to Active state
+ * @return true if user limit was reached
+ */
+bool ClientInterface::isUserLimitReached()
+{
+ return getClientIDs(CS_HelloSent).size() >= g_settings->getU16("max_users");
+}
+
+void ClientInterface::step(float dtime)
+{
+ m_print_info_timer += dtime;
+ if (m_print_info_timer >= 30.0f) {
+ m_print_info_timer = 0.0f;
+ UpdatePlayerList();
+ }
+}
+
+void ClientInterface::UpdatePlayerList()
+{
+ if (m_env) {
+ std::vector<session_t> clients = getClientIDs();
+ m_clients_names.clear();
+
+ if (!clients.empty())
+ infostream<<"Players:"<<std::endl;
+
+ for (session_t i : clients) {
+ RemotePlayer *player = m_env->getPlayer(i);
+
+ if (player == NULL)
+ continue;
+
+ infostream << "* " << player->getName() << "\t";
+
+ {
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+ RemoteClient* client = lockedGetClientNoEx(i);
+ if (client)
+ client->PrintInfo(infostream);
+ }
+
+ m_clients_names.emplace_back(player->getName());
+ }
+ }
+}
+
+void ClientInterface::send(session_t peer_id, u8 channelnum,
+ NetworkPacket *pkt, bool reliable)
+{
+ m_con->Send(peer_id, channelnum, pkt, reliable);
+}
+
+void ClientInterface::sendToAll(NetworkPacket *pkt)
+{
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+ for (auto &client_it : m_clients) {
+ RemoteClient *client = client_it.second;
+
+ if (client->net_proto_version != 0) {
+ m_con->Send(client->peer_id,
+ clientCommandFactoryTable[pkt->getCommand()].channel, pkt,
+ clientCommandFactoryTable[pkt->getCommand()].reliable);
+ }
+ }
+}
+
+RemoteClient* ClientInterface::getClientNoEx(session_t peer_id, ClientState state_min)
+{
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+ RemoteClientMap::const_iterator n = m_clients.find(peer_id);
+ // The client may not exist; clients are immediately removed if their
+ // access is denied, and this event occurs later then.
+ if (n == m_clients.end())
+ return NULL;
+
+ if (n->second->getState() >= state_min)
+ return n->second;
+
+ return NULL;
+}
+
+RemoteClient* ClientInterface::lockedGetClientNoEx(session_t peer_id, ClientState state_min)
+{
+ RemoteClientMap::const_iterator n = m_clients.find(peer_id);
+ // The client may not exist; clients are immediately removed if their
+ // access is denied, and this event occurs later then.
+ if (n == m_clients.end())
+ return NULL;
+
+ if (n->second->getState() >= state_min)
+ return n->second;
+
+ return NULL;
+}
+
+ClientState ClientInterface::getClientState(session_t peer_id)
+{
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+ RemoteClientMap::const_iterator n = m_clients.find(peer_id);
+ // The client may not exist; clients are immediately removed if their
+ // access is denied, and this event occurs later then.
+ if (n == m_clients.end())
+ return CS_Invalid;
+
+ return n->second->getState();
+}
+
+void ClientInterface::setPlayerName(session_t peer_id, const std::string &name)
+{
+ RecursiveMutexAutoLock clientslock(m_clients_mutex);
+ RemoteClientMap::iterator n = m_clients.find(peer_id);
+ // The client may not exist; clients are immediately removed if their
+ // access is denied, and this event occurs later then.
+ if (n != m_clients.end())
+ n->second->setName(name);
+}
+
+void ClientInterface::DeleteClient(session_t peer_id)
+{
+ RecursiveMutexAutoLock conlock(m_clients_mutex);
+
+ // Error check
+ RemoteClientMap::iterator n = m_clients.find(peer_id);
+ // The client may not exist; clients are immediately removed if their
+ // access is denied, and this event occurs later then.
+ if (n == m_clients.end())
+ return;
+
+ /*
+ Mark objects to be not known by the client
+ */
+ //TODO this should be done by client destructor!!!
+ RemoteClient *client = n->second;
+ // Handle objects
+ for (u16 id : client->m_known_objects) {
+ // Get object
+ ServerActiveObject* obj = m_env->getActiveObject(id);
+
+ if(obj && obj->m_known_by_count > 0)
+ obj->m_known_by_count--;
+ }
+
+ // Delete client
+ delete m_clients[peer_id];
+ m_clients.erase(peer_id);
+}
+
+void ClientInterface::CreateClient(session_t peer_id)
+{
+ RecursiveMutexAutoLock conlock(m_clients_mutex);
+
+ // Error check
+ RemoteClientMap::iterator n = m_clients.find(peer_id);
+ // The client shouldn't already exist
+ if (n != m_clients.end()) return;
+
+ // Create client
+ RemoteClient *client = new RemoteClient();
+ client->peer_id = peer_id;
+ m_clients[client->peer_id] = client;
+}
+
+void ClientInterface::event(session_t peer_id, ClientStateEvent event)
+{
+ {
+ RecursiveMutexAutoLock clientlock(m_clients_mutex);
+
+ // Error check
+ RemoteClientMap::iterator n = m_clients.find(peer_id);
+
+ // No client to deliver event
+ if (n == m_clients.end())
+ return;
+ n->second->notifyEvent(event);
+ }
+
+ if ((event == CSE_SetClientReady) ||
+ (event == CSE_Disconnect) ||
+ (event == CSE_SetDenied))
+ {
+ UpdatePlayerList();
+ }
+}
+
+u16 ClientInterface::getProtocolVersion(session_t peer_id)
+{
+ RecursiveMutexAutoLock conlock(m_clients_mutex);
+
+ // Error check
+ RemoteClientMap::iterator n = m_clients.find(peer_id);
+
+ // No client to get version
+ if (n == m_clients.end())
+ return 0;
+
+ return n->second->net_proto_version;
+}
+
+void ClientInterface::setClientVersion(session_t peer_id, u8 major, u8 minor, u8 patch,
+ const std::string &full)
+{
+ RecursiveMutexAutoLock conlock(m_clients_mutex);
+
+ // Error check
+ RemoteClientMap::iterator n = m_clients.find(peer_id);
+
+ // No client to set versions
+ if (n == m_clients.end())
+ return;
+
+ n->second->setVersionInfo(major, minor, patch, full);
+}
projects / minetest.git / commitdiff