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client.cpp
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client.cpp
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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <iostream>
#include <algorithm>
#include <sstream>
#include <cmath>
#include <IFileSystem.h>
#include <json/json.h>
#include "client.h"
#include "network/clientopcodes.h"
#include "network/connection.h"
#include "network/networkpacket.h"
#include "threading/mutex_auto_lock.h"
#include "client/clientevent.h"
#include "client/gameui.h"
#include "client/renderingengine.h"
#include "client/sound.h"
#include "client/tile.h"
#include "client/mesh_generator_thread.h"
#include "client/particles.h"
#include "client/localplayer.h"
#include "util/auth.h"
#include "util/directiontables.h"
#include "util/pointedthing.h"
#include "util/serialize.h"
#include "util/string.h"
#include "util/srp.h"
#include "filesys.h"
#include "mapblock_mesh.h"
#include "mapblock.h"
#include "mapsector.h"
#include "minimap.h"
#include "modchannels.h"
#include "content/mods.h"
#include "profiler.h"
#include "shader.h"
#include "gettext.h"
#include "clientmap.h"
#include "clientmedia.h"
#include "version.h"
#include "database/database-files.h"
#include "database/database-sqlite3.h"
#include "serialization.h"
#include "guiscalingfilter.h"
#include "script/scripting_client.h"
#include "game.h"
#include "chatmessage.h"
#include "translation.h"
#include "content/mod_configuration.h"
#include "mapnode.h"
extern gui::IGUIEnvironment* guienv;
/*
Utility classes
*/
u32 PacketCounter::sum() const
{
u32 n = 0;
for (const auto &it : m_packets)
n += it.second;
return n;
}
void PacketCounter::print(std::ostream &o) const
{
for (const auto &it : m_packets) {
auto name = it.first >= TOCLIENT_NUM_MSG_TYPES ? nullptr
: toClientCommandTable[it.first].name;
if (!name)
name = "?";
o << "cmd " << it.first << " (" << name << ") count "
<< it.second << std::endl;
}
}
/*
Client
*/
Client::Client(
const char *playername,
const std::string &password,
MapDrawControl &control,
IWritableTextureSource *tsrc,
IWritableShaderSource *shsrc,
IWritableItemDefManager *itemdef,
NodeDefManager *nodedef,
ISoundManager *sound,
MtEventManager *event,
RenderingEngine *rendering_engine,
GameUI *game_ui,
ELoginRegister allow_login_or_register
):
m_tsrc(tsrc),
m_shsrc(shsrc),
m_itemdef(itemdef),
m_nodedef(nodedef),
m_sound(sound),
m_event(event),
m_rendering_engine(rendering_engine),
m_mesh_update_manager(std::make_unique<MeshUpdateManager>(this)),
m_env(
new ClientMap(this, rendering_engine, control, 666),
tsrc, this
),
m_particle_manager(std::make_unique<ParticleManager>(&m_env)),
m_allow_login_or_register(allow_login_or_register),
m_server_ser_ver(SER_FMT_VER_INVALID),
m_last_chat_message_sent(time(NULL)),
m_password(password),
m_chosen_auth_mech(AUTH_MECHANISM_NONE),
m_media_downloader(new ClientMediaDownloader()),
m_state(LC_Created),
m_game_ui(game_ui),
m_modchannel_mgr(new ModChannelMgr())
{
// Add local player
m_env.setLocalPlayer(new LocalPlayer(this, playername));
// Make the mod storage database and begin the save for later
m_mod_storage_database =
new ModStorageDatabaseSQLite3(porting::path_user + DIR_DELIM + "client");
m_mod_storage_database->beginSave();
if (g_settings->getBool("enable_minimap")) {
m_minimap = new Minimap(this);
}
m_cache_save_interval = g_settings->getU16("server_map_save_interval");
m_mesh_grid = { g_settings->getU16("client_mesh_chunk") };
}
void Client::migrateModStorage()
{
std::string mod_storage_dir = porting::path_user + DIR_DELIM + "client";
std::string old_mod_storage = mod_storage_dir + DIR_DELIM + "mod_storage";
if (fs::IsDir(old_mod_storage)) {
infostream << "Migrating client mod storage to SQLite3 database" << std::endl;
{
ModStorageDatabaseFiles files_db(mod_storage_dir);
std::vector<std::string> mod_list;
files_db.listMods(&mod_list);
for (const std::string &modname : mod_list) {
infostream << "Migrating client mod storage for mod " << modname << std::endl;
StringMap meta;
files_db.getModEntries(modname, &meta);
for (const auto &pair : meta) {
m_mod_storage_database->setModEntry(modname, pair.first, pair.second);
}
}
}
if (!fs::Rename(old_mod_storage, old_mod_storage + ".bak")) {
// Execution cannot move forward if the migration does not complete.
throw BaseException("Could not finish migrating client mod storage");
}
infostream << "Finished migration of client mod storage" << std::endl;
}
}
void Client::loadMods()
{
// Don't load mods twice.
// If client scripting is disabled by the client, don't load builtin or
// client-provided mods.
if (m_mods_loaded || !g_settings->getBool("enable_client_modding"))
return;
// If client scripting is disabled by the server, don't load builtin or
// client-provided mods.
// TODO Delete this code block when server-sent CSM and verifying of builtin are
// complete.
if (checkCSMRestrictionFlag(CSMRestrictionFlags::CSM_RF_LOAD_CLIENT_MODS)) {
warningstream << "Client-provided mod loading is disabled by server." <<
std::endl;
return;
}
m_script = new ClientScripting(this);
m_env.setScript(m_script);
m_script->setEnv(&m_env);
// Load builtin
scanModIntoMemory(BUILTIN_MOD_NAME, getBuiltinLuaPath());
m_script->loadModFromMemory(BUILTIN_MOD_NAME);
m_script->checkSetByBuiltin();
ModConfiguration modconf;
{
std::unordered_map<std::string, std::string> paths;
std::string path_user = porting::path_user + DIR_DELIM + "clientmods";
const auto modsPath = getClientModsLuaPath();
if (modsPath != path_user) {
paths["share"] = modsPath;
}
paths["mods"] = path_user;
std::string settings_path = path_user + DIR_DELIM + "mods.conf";
modconf.addModsFromConfig(settings_path, paths);
modconf.checkConflictsAndDeps();
}
m_mods = modconf.getMods();
// complain about mods with unsatisfied dependencies
if (!modconf.isConsistent()) {
errorstream << modconf.getUnsatisfiedModsError() << std::endl;
return;
}
// Print mods
infostream << "Client loading mods: ";
for (const ModSpec &mod : m_mods)
infostream << mod.name << " ";
infostream << std::endl;
// Load "mod" scripts
for (const ModSpec &mod : m_mods) {
mod.checkAndLog();
scanModIntoMemory(mod.name, mod.path);
}
// Run them
for (const ModSpec &mod : m_mods)
m_script->loadModFromMemory(mod.name);
// Mods are done loading. Unlock callbacks
m_mods_loaded = true;
// Run a callback when mods are loaded
m_script->on_mods_loaded();
// Create objects if they're ready
if (m_state == LC_Ready)
m_script->on_client_ready(m_env.getLocalPlayer());
if (m_camera)
m_script->on_camera_ready(m_camera);
if (m_minimap)
m_script->on_minimap_ready(m_minimap);
}
void Client::scanModSubfolder(const std::string &mod_name, const std::string &mod_path,
std::string mod_subpath)
{
std::string full_path = mod_path + DIR_DELIM + mod_subpath;
std::vector<fs::DirListNode> mod = fs::GetDirListing(full_path);
for (const fs::DirListNode &j : mod) {
if (j.name[0] == '.')
continue;
if (j.dir) {
scanModSubfolder(mod_name, mod_path, mod_subpath + j.name + DIR_DELIM);
continue;
}
std::replace(mod_subpath.begin(), mod_subpath.end(), DIR_DELIM_CHAR, '/');
std::string real_path = full_path + j.name;
std::string vfs_path = mod_name + ":" + mod_subpath + j.name;
infostream << "Client::scanModSubfolder(): Loading \"" << real_path
<< "\" as \"" << vfs_path << "\"." << std::endl;
std::string contents;
if (!fs::ReadFile(real_path, contents)) {
errorstream << "Client::scanModSubfolder(): Can't read file \""
<< real_path << "\"." << std::endl;
continue;
}
m_mod_vfs.emplace(vfs_path, contents);
}
}
const std::string &Client::getBuiltinLuaPath()
{
static const std::string builtin_dir = porting::path_share + DIR_DELIM + "builtin";
return builtin_dir;
}
const std::string &Client::getClientModsLuaPath()
{
static const std::string clientmods_dir = porting::path_share + DIR_DELIM + "clientmods";
return clientmods_dir;
}
const std::vector<ModSpec>& Client::getMods() const
{
static std::vector<ModSpec> client_modspec_temp;
return client_modspec_temp;
}
const ModSpec* Client::getModSpec(const std::string &modname) const
{
return NULL;
}
void Client::Stop()
{
m_shutdown = true;
if (m_mods_loaded)
m_script->on_shutdown();
//request all client managed threads to stop
m_mesh_update_manager->stop();
// Save local server map
if (m_localdb) {
infostream << "Local map saving ended." << std::endl;
m_localdb->endSave();
}
if (m_mods_loaded)
delete m_script;
}
bool Client::isShutdown()
{
return m_shutdown || !m_mesh_update_manager->isRunning();
}
Client::~Client()
{
m_shutdown = true;
if (m_con)
m_con->Disconnect();
deleteAuthData();
m_mesh_update_manager->stop();
m_mesh_update_manager->wait();
MeshUpdateResult r;
while (m_mesh_update_manager->getNextResult(r)) {
for (auto block : r.map_blocks)
if (block)
block->refDrop();
delete r.mesh;
}
delete m_inventory_from_server;
// Delete detached inventories
for (auto &m_detached_inventorie : m_detached_inventories) {
delete m_detached_inventorie.second;
}
// cleanup 3d model meshes on client shutdown
m_rendering_engine->cleanupMeshCache();
guiScalingCacheClear();
delete m_minimap;
m_minimap = nullptr;
delete m_media_downloader;
// Write the changes and delete
if (m_mod_storage_database)
m_mod_storage_database->endSave();
delete m_mod_storage_database;
// Free sound ids
for (auto &csp : m_sounds_client_to_server)
m_sound->freeId(csp.first);
m_sounds_client_to_server.clear();
}
void Client::connect(const Address &address, const std::string &address_name,
bool is_local_server)
{
if (m_con) {
// can't do this if the connection has entered auth phase
sanity_check(m_state == LC_Created && m_proto_ver == 0);
infostream << "Client connection will be recreated" << std::endl;
m_access_denied = false;
m_access_denied_reconnect = false;
m_access_denied_reason.clear();
}
m_address_name = address_name;
m_con.reset(new con::Connection(PROTOCOL_ID, 512, CONNECTION_TIMEOUT,
address.isIPv6(), this));
infostream << "Connecting to server at ";
address.print(infostream);
infostream << std::endl;
// Since we use TryReceive() a timeout here would be ineffective anyway
m_con->SetTimeoutMs(0);
m_con->Connect(address);
initLocalMapSaving(address, m_address_name, is_local_server);
}
void Client::step(float dtime)
{
// Limit a bit
if (dtime > DTIME_LIMIT)
dtime = DTIME_LIMIT;
m_animation_time += dtime;
if(m_animation_time > 60.0)
m_animation_time -= 60.0;
m_time_of_day_update_timer += dtime;
ReceiveAll();
/*
Packet counter
*/
{
float &counter = m_packetcounter_timer;
counter -= dtime;
if(counter <= 0.0f)
{
counter = 30.0f;
u32 sum = m_packetcounter.sum();
float avg = sum / counter;
infostream << "Client packetcounter (" << counter << "s): "
<< "sum=" << sum << " avg=" << avg << "/s" << std::endl;
m_packetcounter.print(infostream);
m_packetcounter.clear();
}
}
// UGLY hack to fix 2 second startup delay caused by non existent
// server client startup synchronization in local server or singleplayer mode
static bool initial_step = true;
if (initial_step) {
initial_step = false;
}
else if(m_state == LC_Created) {
float &counter = m_connection_reinit_timer;
counter -= dtime;
if(counter <= 0.0) {
counter = 2.0;
LocalPlayer *myplayer = m_env.getLocalPlayer();
FATAL_ERROR_IF(myplayer == NULL, "Local player not found in environment.");
sendInit(myplayer->getName());
}
// Not connected, return
return;
}
/*
Do stuff if connected
*/
/*
Run Map's timers and unload unused data
*/
const float map_timer_and_unload_dtime = 5.25;
if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime)) {
std::vector<v3s16> deleted_blocks;
m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
std::max(g_settings->getFloat("client_unload_unused_data_timeout"), 0.0f),
g_settings->getS32("client_mapblock_limit"),
&deleted_blocks);
/*
Send info to server
NOTE: This loop is intentionally iterated the way it is.
*/
std::vector<v3s16>::iterator i = deleted_blocks.begin();
std::vector<v3s16> sendlist;
for(;;) {
if(sendlist.size() == 255 || i == deleted_blocks.end()) {
if(sendlist.empty())
break;
/*
[0] u16 command
[2] u8 count
[3] v3s16 pos_0
[3+6] v3s16 pos_1
...
*/
sendDeletedBlocks(sendlist);
if(i == deleted_blocks.end())
break;
sendlist.clear();
}
sendlist.push_back(*i);
++i;
}
}
/*
Send pending messages on out chat queue
*/
if (!m_out_chat_queue.empty() && canSendChatMessage()) {
sendChatMessage(m_out_chat_queue.front());
m_out_chat_queue.pop();
}
/*
Handle environment
*/
LocalPlayer *player = m_env.getLocalPlayer();
// Step environment (also handles player controls)
m_env.step(dtime);
m_sound->step(dtime);
/*
Get events
*/
while (m_env.hasClientEnvEvents()) {
ClientEnvEvent envEvent = m_env.getClientEnvEvent();
if (envEvent.type == CEE_PLAYER_DAMAGE) {
u16 damage = envEvent.player_damage.amount;
if (envEvent.player_damage.send_to_server)
sendDamage(damage);
// Add to ClientEvent queue
ClientEvent *event = new ClientEvent();
event->type = CE_PLAYER_DAMAGE;
event->player_damage.amount = damage;
event->player_damage.effect = true;
m_client_event_queue.push(event);
}
}
/*
Print some info
*/
float &counter = m_avg_rtt_timer;
counter += dtime;
if(counter >= 10) {
counter = 0.0;
// connectedAndInitialized() is true, peer exists.
float avg_rtt = getRTT();
infostream << "Client: avg_rtt=" << avg_rtt << std::endl;
}
/*
Send player position to server
*/
{
float &counter = m_playerpos_send_timer;
counter += dtime;
if((m_state == LC_Ready) && (counter >= m_recommended_send_interval))
{
counter = 0.0;
sendPlayerPos();
}
}
/*
Replace updated meshes
*/
{
int num_processed_meshes = 0;
std::vector<v3s16> blocks_to_ack;
bool force_update_shadows = false;
MeshUpdateResult r;
while (m_mesh_update_manager->getNextResult(r))
{
num_processed_meshes++;
std::vector<MinimapMapblock*> minimap_mapblocks;
bool do_mapper_update = true;
MapSector *sector = m_env.getMap().emergeSector(v2s16(r.p.X, r.p.Z));
MapBlock *block = sector->getBlockNoCreateNoEx(r.p.Y);
// The block in question is not visible (perhaps it is culled at the server),
// create a blank block just to hold the chunk's mesh.
// If the block becomes visible later it will replace the blank block.
if (!block && r.mesh)
block = sector->createBlankBlock(r.p.Y);
if (block) {
// Delete the old mesh
delete block->mesh;
block->mesh = nullptr;
block->solid_sides = r.solid_sides;
if (r.mesh) {
minimap_mapblocks = r.mesh->moveMinimapMapblocks();
if (minimap_mapblocks.empty())
do_mapper_update = false;
bool is_empty = true;
for (int l = 0; l < MAX_TILE_LAYERS; l++)
if (r.mesh->getMesh(l)->getMeshBufferCount() != 0)
is_empty = false;
if (is_empty)
delete r.mesh;
else {
// Replace with the new mesh
block->mesh = r.mesh;
if (r.urgent)
force_update_shadows = true;
}
}
} else {
delete r.mesh;
}
if (m_minimap && do_mapper_update) {
v3s16 ofs;
// See also mapblock_mesh.cpp for the code that creates the array of minimap blocks.
for (ofs.Z = 0; ofs.Z < m_mesh_grid.cell_size; ofs.Z++)
for (ofs.Y = 0; ofs.Y < m_mesh_grid.cell_size; ofs.Y++)
for (ofs.X = 0; ofs.X < m_mesh_grid.cell_size; ofs.X++) {
size_t i = m_mesh_grid.getOffsetIndex(ofs);
if (i < minimap_mapblocks.size() && minimap_mapblocks[i])
m_minimap->addBlock(r.p + ofs, minimap_mapblocks[i]);
}
}
for (auto p : r.ack_list) {
if (blocks_to_ack.size() == 255) {
sendGotBlocks(blocks_to_ack);
blocks_to_ack.clear();
}
blocks_to_ack.emplace_back(p);
}
for (auto block : r.map_blocks)
if (block)
block->refDrop();
}
if (blocks_to_ack.size() > 0) {
// Acknowledge block(s)
sendGotBlocks(blocks_to_ack);
}
if (num_processed_meshes > 0)
g_profiler->graphAdd("num_processed_meshes", num_processed_meshes);
auto shadow_renderer = RenderingEngine::get_shadow_renderer();
if (shadow_renderer && force_update_shadows)
shadow_renderer->setForceUpdateShadowMap();
}
/*
Load fetched media
*/
if (m_media_downloader && m_media_downloader->isStarted()) {
m_media_downloader->step(this);
if (m_media_downloader->isDone()) {
delete m_media_downloader;
m_media_downloader = NULL;
}
}
{
// Acknowledge dynamic media downloads to server
std::vector<u32> done;
for (auto it = m_pending_media_downloads.begin();
it != m_pending_media_downloads.end();) {
assert(it->second->isStarted());
it->second->step(this);
if (it->second->isDone()) {
done.emplace_back(it->first);
it = m_pending_media_downloads.erase(it);
} else {
it++;
}
if (done.size() == 255) { // maximum in one packet
sendHaveMedia(done);
done.clear();
}
}
if (!done.empty())
sendHaveMedia(done);
}
/*
If the server didn't update the inventory in a while, revert
the local inventory (so the player notices the lag problem
and knows something is wrong).
*/
if (m_inventory_from_server && !inhibit_inventory_revert) {
float interval = 10.0f;
float count_before = std::floor(m_inventory_from_server_age / interval);
m_inventory_from_server_age += dtime;
float count_after = std::floor(m_inventory_from_server_age / interval);
if (count_after != count_before) {
// Do this every <interval> seconds after TOCLIENT_INVENTORY
// Reset the locally changed inventory to the authoritative inventory
player->inventory = *m_inventory_from_server;
m_update_wielded_item = true;
}
}
/*
Update positions of sounds attached to objects
*/
{
for (auto &m_sounds_to_object : m_sounds_to_objects) {
sound_handle_t client_id = m_sounds_to_object.first;
u16 object_id = m_sounds_to_object.second;
ClientActiveObject *cao = m_env.getActiveObject(object_id);
if (!cao)
continue;
m_sound->updateSoundPosVel(client_id, cao->getPosition() * (1.0f/BS),
cao->getVelocity() * (1.0f/BS));
}
}
/*
Handle removed remotely initiated sounds
*/
m_removed_sounds_check_timer += dtime;
if(m_removed_sounds_check_timer >= 2.32) {
m_removed_sounds_check_timer = 0;
// Find removed sounds and clear references to them
std::vector<sound_handle_t> removed_client_ids = m_sound->pollRemovedSounds();
std::vector<s32> removed_server_ids;
for (sound_handle_t client_id : removed_client_ids) {
auto client_to_server_id_it = m_sounds_client_to_server.find(client_id);
if (client_to_server_id_it == m_sounds_client_to_server.end())
continue;
s32 server_id = client_to_server_id_it->second;
m_sound->freeId(client_id);
m_sounds_client_to_server.erase(client_to_server_id_it);
if (server_id != -1) {
m_sounds_server_to_client.erase(server_id);
removed_server_ids.push_back(server_id);
}
m_sounds_to_objects.erase(client_id);
}
// Sync to server
if (!removed_server_ids.empty()) {
sendRemovedSounds(removed_server_ids);
}
}
// Write changes to the mod storage
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");
m_mod_storage_database->endSave();
m_mod_storage_database->beginSave();
}
// Write server map
if (m_localdb && m_localdb_save_interval.step(dtime,
m_cache_save_interval)) {
m_localdb->endSave();
m_localdb->beginSave();
}
}
bool Client::loadMedia(const std::string &data, const std::string &filename,
bool from_media_push)
{
std::string name;
const char *image_ext[] = {
".png", ".jpg", ".bmp", ".tga",
NULL
};
name = removeStringEnd(filename, image_ext);
if (!name.empty()) {
TRACESTREAM(<< "Client: Attempting to load image "
<< "file \"" << filename << "\"" << std::endl);
io::IFileSystem *irrfs = m_rendering_engine->get_filesystem();
video::IVideoDriver *vdrv = m_rendering_engine->get_video_driver();
io::IReadFile *rfile = irrfs->createMemoryReadFile(
data.c_str(), data.size(), "_tempreadfile");
FATAL_ERROR_IF(!rfile, "Could not create irrlicht memory file.");
// Read image
video::IImage *img = vdrv->createImageFromFile(rfile);
if (!img) {
errorstream<<"Client: Cannot create image from data of "
<<"file \""<<filename<<"\""<<std::endl;
rfile->drop();
return false;
}
m_tsrc->insertSourceImage(filename, img);
img->drop();
rfile->drop();
return true;
}
const char *sound_ext[] = {
".0.ogg", ".1.ogg", ".2.ogg", ".3.ogg", ".4.ogg",
".5.ogg", ".6.ogg", ".7.ogg", ".8.ogg", ".9.ogg",
".ogg", NULL
};
name = removeStringEnd(filename, sound_ext);
if (!name.empty()) {
TRACESTREAM(<< "Client: Attempting to load sound file \""
<< filename << "\"" << std::endl);
if (!m_sound->loadSoundData(filename, std::string(data)))
return false;
// "name[.num].ogg" is in group "name"
m_sound->addSoundToGroup(filename, name);
return true;
}
const char *model_ext[] = {
".x", ".b3d", ".obj",
NULL
};
name = removeStringEnd(filename, model_ext);
if (!name.empty()) {
verbosestream<<"Client: Storing model into memory: "
<<"\""<<filename<<"\""<<std::endl;
if(m_mesh_data.count(filename))
errorstream<<"Multiple models with name \""<<filename.c_str()
<<"\" found; replacing previous model"<<std::endl;
m_mesh_data[filename] = data;
return true;
}
const char *translate_ext[] = {
".tr", NULL
};
name = removeStringEnd(filename, translate_ext);
if (!name.empty()) {
if (from_media_push)
return false;
TRACESTREAM(<< "Client: Loading translation: "
<< "\"" << filename << "\"" << std::endl);
g_client_translations->loadTranslation(data);
return true;
}
errorstream << "Client: Don't know how to load file \""
<< filename << "\"" << std::endl;
return false;
}
// Virtual methods from con::PeerHandler
void Client::peerAdded(con::Peer *peer)
{
infostream << "Client::peerAdded(): peer->id="
<< peer->id << std::endl;
}
void Client::deletingPeer(con::Peer *peer, bool timeout)
{
infostream << "Client::deletingPeer(): "
"Server Peer is getting deleted "
<< "(timeout=" << timeout << ")" << std::endl;
m_access_denied = true;
if (timeout)
m_access_denied_reason = gettext("Connection timed out.");
else if (m_access_denied_reason.empty())
m_access_denied_reason = gettext("Connection aborted (protocol error?).");
}
/*
u16 command
u16 number of files requested
for each file {
u16 length of name
string name
}
*/
void Client::request_media(const std::vector<std::string> &file_requests)
{
std::ostringstream os(std::ios_base::binary);
writeU16(os, TOSERVER_REQUEST_MEDIA);
size_t file_requests_size = file_requests.size();
FATAL_ERROR_IF(file_requests_size > 0xFFFF, "Unsupported number of file requests");
// Packet dynamicly resized
NetworkPacket pkt(TOSERVER_REQUEST_MEDIA, 2 + 0);
pkt << (u16) (file_requests_size & 0xFFFF);
for (const std::string &file_request : file_requests) {
pkt << file_request;
}
Send(&pkt);
infostream << "Client: Sending media request list to server ("
<< file_requests.size() << " files, packet size "
<< pkt.getSize() << ")" << std::endl;
}
void Client::initLocalMapSaving(const Address &address,
const std::string &hostname,
bool is_local_server)
{
if (!g_settings->getBool("enable_local_map_saving") || is_local_server) {
return;
}
if (m_localdb) {
infostream << "Local map saving already running" << std::endl;
return;
}
std::string world_path;
#define set_world_path(hostname) \
world_path = porting::path_user \
+ DIR_DELIM + "worlds" \
+ DIR_DELIM + "server_" \
+ hostname + "_" + std::to_string(address.getPort());
set_world_path(hostname);
if (!fs::IsDir(world_path)) {
std::string hostname_escaped = hostname;
str_replace(hostname_escaped, ':', '_');
set_world_path(hostname_escaped);
}
#undef set_world_path
fs::CreateAllDirs(world_path);
m_localdb = new MapDatabaseSQLite3(world_path);
m_localdb->beginSave();
actionstream << "Local map saving started, map will be saved at '" << world_path << "'" << std::endl;
}
void Client::ReceiveAll()
{
NetworkPacket pkt;
u64 start_ms = porting::getTimeMs();
const u64 budget = 10;
FATAL_ERROR_IF(!m_con, "Networking not initialized");
for(;;) {
// Limit time even if there would be huge amounts of data to
// process
if (porting::getTimeMs() > start_ms + budget) {
infostream << "Client::ReceiveAll(): "
"Packet processing budget exceeded." << std::endl;
break;
}
pkt.clear();
try {
if (!m_con->TryReceive(&pkt))
break;
ProcessData(&pkt);
} catch (const con::InvalidIncomingDataException &e) {
infostream << "Client::ReceiveAll(): "
"InvalidIncomingDataException: what()="
<< e.what() << std::endl;
}
}
}
inline void Client::handleCommand(NetworkPacket* pkt)
{
const ToClientCommandHandler& opHandle = toClientCommandTable[pkt->getCommand()];
(this->*opHandle.handler)(pkt);
}
/*
sender_peer_id given to this shall be quaranteed to be a valid peer
*/
void Client::ProcessData(NetworkPacket *pkt)
{
ToClientCommand command = (ToClientCommand) pkt->getCommand();
m_packetcounter.add(static_cast<u16>(command));
g_profiler->graphAdd("client_received_packets", 1);
/*