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clientpackethandler.cpp
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clientpackethandler.cpp
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/*
Minetest
Copyright (C) 2015 nerzhul, Loic Blot <[email protected]>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "client/client.h"
#include "util/base64.h"
#include "client/camera.h"
#include "chatmessage.h"
#include "client/clientmedia.h"
#include "log.h"
#include "map.h"
#include "mapsector.h"
#include "client/minimap.h"
#include "modchannels.h"
#include "nodedef.h"
#include "serialization.h"
#include "server.h"
#include "util/strfnd.h"
#include "client/clientevent.h"
#include "client/sound.h"
#include "network/clientopcodes.h"
#include "network/connection.h"
#include "script/scripting_client.h"
#include "util/serialize.h"
#include "util/srp.h"
#include "util/sha1.h"
#include "tileanimation.h"
#include "gettext.h"
#include "skyparams.h"
#include <memory>
void Client::handleCommand_Deprecated(NetworkPacket* pkt)
{
infostream << "Got deprecated command "
<< toClientCommandTable[pkt->getCommand()].name << " from peer "
<< pkt->getPeerId() << "!" << std::endl;
}
void Client::handleCommand_Hello(NetworkPacket* pkt)
{
if (pkt->getSize() < 1)
return;
u8 serialization_ver;
u16 proto_ver;
u16 compression_mode;
u32 auth_mechs;
std::string username_legacy; // for case insensitivity
*pkt >> serialization_ver >> compression_mode >> proto_ver
>> auth_mechs >> username_legacy;
// Chose an auth method we support
AuthMechanism chosen_auth_mechanism = choseAuthMech(auth_mechs);
infostream << "Client: TOCLIENT_HELLO received with "
<< "serialization_ver=" << (u32)serialization_ver
<< ", auth_mechs=" << auth_mechs
<< ", proto_ver=" << proto_ver
<< ", compression_mode=" << compression_mode
<< ". Doing auth with mech " << chosen_auth_mechanism << std::endl;
if (!ser_ver_supported(serialization_ver)) {
infostream << "Client: TOCLIENT_HELLO: Server sent "
<< "unsupported ser_fmt_ver"<< std::endl;
return;
}
m_server_ser_ver = serialization_ver;
m_proto_ver = proto_ver;
//TODO verify that username_legacy matches sent username, only
// differs in casing (make both uppercase and compare)
// This is only neccessary though when we actually want to add casing support
if (m_chosen_auth_mech != AUTH_MECHANISM_NONE) {
// we received a TOCLIENT_HELLO while auth was already going on
errorstream << "Client: TOCLIENT_HELLO while auth was already going on"
<< "(chosen_mech=" << m_chosen_auth_mech << ")." << std::endl;
if (m_chosen_auth_mech == AUTH_MECHANISM_SRP ||
m_chosen_auth_mech == AUTH_MECHANISM_LEGACY_PASSWORD) {
srp_user_delete((SRPUser *) m_auth_data);
m_auth_data = 0;
}
}
// Authenticate using that method, or abort if there wasn't any method found
if (chosen_auth_mechanism != AUTH_MECHANISM_NONE) {
bool is_register = chosen_auth_mechanism == AUTH_MECHANISM_FIRST_SRP;
ELoginRegister mode = is_register ? ELoginRegister::Register : ELoginRegister::Login;
if (m_allow_login_or_register != ELoginRegister::Any &&
m_allow_login_or_register != mode) {
m_chosen_auth_mech = AUTH_MECHANISM_NONE;
m_access_denied = true;
if (m_allow_login_or_register == ELoginRegister::Login) {
m_access_denied_reason =
gettext("Name is not registered. To create an account on this server, click 'Register'");
} else {
m_access_denied_reason =
gettext("Name is taken. Please choose another name");
}
m_con->Disconnect();
} else {
startAuth(chosen_auth_mechanism);
}
} else {
m_chosen_auth_mech = AUTH_MECHANISM_NONE;
m_access_denied = true;
m_access_denied_reason = "Unknown";
m_con->Disconnect();
}
}
void Client::handleCommand_AuthAccept(NetworkPacket* pkt)
{
deleteAuthData();
v3f playerpos;
*pkt >> playerpos >> m_map_seed >> m_recommended_send_interval
>> m_sudo_auth_methods;
playerpos -= v3f(0, BS / 2, 0);
// Set player position
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
player->setPosition(playerpos);
infostream << "Client: received map seed: " << m_map_seed << std::endl;
infostream << "Client: received recommended send interval "
<< m_recommended_send_interval<<std::endl;
// Reply to server
/*~ DO NOT TRANSLATE THIS LITERALLY!
This is a special string which needs to contain the translation's
language code (e.g. "de" for German). */
std::string lang = gettext("LANG_CODE");
if (lang == "LANG_CODE")
lang.clear();
NetworkPacket resp_pkt(TOSERVER_INIT2, sizeof(u16) + lang.size());
resp_pkt << lang;
Send(&resp_pkt);
m_state = LC_Init;
}
void Client::handleCommand_AcceptSudoMode(NetworkPacket* pkt)
{
deleteAuthData();
m_password = m_new_password;
verbosestream << "Client: Received TOCLIENT_ACCEPT_SUDO_MODE." << std::endl;
// send packet to actually set the password
startAuth(AUTH_MECHANISM_FIRST_SRP);
// reset again
m_chosen_auth_mech = AUTH_MECHANISM_NONE;
}
void Client::handleCommand_DenySudoMode(NetworkPacket* pkt)
{
ChatMessage *chatMessage = new ChatMessage(CHATMESSAGE_TYPE_SYSTEM,
L"Password change denied. Password NOT changed.");
pushToChatQueue(chatMessage);
// reset everything and be sad
deleteAuthData();
}
void Client::handleCommand_AccessDenied(NetworkPacket* pkt)
{
// The server didn't like our password. Note, this needs
// to be processed even if the serialisation format has
// not been agreed yet, the same as TOCLIENT_INIT.
m_access_denied = true;
m_access_denied_reason = "Unknown";
if (pkt->getCommand() != TOCLIENT_ACCESS_DENIED) {
// Legacy code from 0.4.12 and older but is still used
// in some places of the server code
if (pkt->getSize() >= 2) {
std::wstring wide_reason;
*pkt >> wide_reason;
m_access_denied_reason = wide_to_utf8(wide_reason);
}
return;
}
if (pkt->getSize() < 1)
return;
u8 denyCode;
*pkt >> denyCode;
if (denyCode == SERVER_ACCESSDENIED_SHUTDOWN ||
denyCode == SERVER_ACCESSDENIED_CRASH) {
*pkt >> m_access_denied_reason;
if (m_access_denied_reason.empty())
m_access_denied_reason = accessDeniedStrings[denyCode];
u8 reconnect;
*pkt >> reconnect;
m_access_denied_reconnect = reconnect & 1;
} else if (denyCode == SERVER_ACCESSDENIED_CUSTOM_STRING) {
*pkt >> m_access_denied_reason;
} else if (denyCode == SERVER_ACCESSDENIED_TOO_MANY_USERS) {
m_access_denied_reason = accessDeniedStrings[denyCode];
m_access_denied_reconnect = true;
} else if (denyCode < SERVER_ACCESSDENIED_MAX) {
m_access_denied_reason = accessDeniedStrings[denyCode];
} else {
// Allow us to add new error messages to the
// protocol without raising the protocol version, if we want to.
// Until then (which may be never), this is outside
// of the defined protocol.
*pkt >> m_access_denied_reason;
if (m_access_denied_reason.empty())
m_access_denied_reason = "Unknown";
}
}
void Client::handleCommand_RemoveNode(NetworkPacket* pkt)
{
if (pkt->getSize() < 6)
return;
v3s16 p;
*pkt >> p;
removeNode(p);
}
void Client::handleCommand_AddNode(NetworkPacket* pkt)
{
if (pkt->getSize() < 6 + MapNode::serializedLength(m_server_ser_ver))
return;
v3s16 p;
*pkt >> p;
MapNode n;
n.deSerialize(pkt->getU8Ptr(6), m_server_ser_ver);
bool remove_metadata = true;
u32 index = 6 + MapNode::serializedLength(m_server_ser_ver);
if ((pkt->getSize() >= index + 1) && pkt->getU8(index)) {
remove_metadata = false;
}
addNode(p, n, remove_metadata);
}
void Client::handleCommand_NodemetaChanged(NetworkPacket *pkt)
{
if (pkt->getSize() < 1)
return;
std::istringstream is(pkt->readLongString(), std::ios::binary);
std::stringstream sstr(std::ios::binary | std::ios::in | std::ios::out);
decompressZlib(is, sstr);
NodeMetadataList meta_updates_list(false);
meta_updates_list.deSerialize(sstr, m_itemdef, true);
Map &map = m_env.getMap();
for (NodeMetadataMap::const_iterator i = meta_updates_list.begin();
i != meta_updates_list.end(); ++i) {
v3s16 pos = i->first;
if (map.isValidPosition(pos) &&
map.setNodeMetadata(pos, i->second))
continue; // Prevent from deleting metadata
// Meta couldn't be set, unused metadata
delete i->second;
}
}
void Client::handleCommand_BlockData(NetworkPacket* pkt)
{
// Ignore too small packet
if (pkt->getSize() < 6)
return;
v3s16 p;
*pkt >> p;
std::string datastring(pkt->getString(6), pkt->getSize() - 6);
std::istringstream istr(datastring, std::ios_base::binary);
MapSector *sector;
MapBlock *block;
v2s16 p2d(p.X, p.Z);
sector = m_env.getMap().emergeSector(p2d);
assert(sector->getPos() == p2d);
block = sector->getBlockNoCreateNoEx(p.Y);
if (block) {
/*
Update an existing block
*/
block->deSerialize(istr, m_server_ser_ver, false);
block->deSerializeNetworkSpecific(istr);
}
else {
/*
Create a new block
*/
block = new MapBlock(&m_env.getMap(), p, this);
block->deSerialize(istr, m_server_ser_ver, false);
block->deSerializeNetworkSpecific(istr);
sector->insertBlock(block);
}
if (m_localdb) {
ServerMap::saveBlock(block, m_localdb);
}
/*
Add it to mesh update queue and set it to be acknowledged after update.
*/
addUpdateMeshTaskWithEdge(p, true);
}
void Client::handleCommand_Inventory(NetworkPacket* pkt)
{
if (pkt->getSize() < 1)
return;
std::string datastring(pkt->getString(0), pkt->getSize());
std::istringstream is(datastring, std::ios_base::binary);
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
player->inventory.deSerialize(is);
m_update_wielded_item = true;
delete m_inventory_from_server;
m_inventory_from_server = new Inventory(player->inventory);
m_inventory_from_server_age = 0.0;
}
void Client::handleCommand_TimeOfDay(NetworkPacket* pkt)
{
if (pkt->getSize() < 2)
return;
u16 time_of_day;
*pkt >> time_of_day;
time_of_day = time_of_day % 24000;
float time_speed = 0;
if (pkt->getSize() >= 2 + 4) {
*pkt >> time_speed;
}
else {
// Old message; try to approximate speed of time by ourselves
float time_of_day_f = (float)time_of_day / 24000.0f;
float tod_diff_f = 0;
if (time_of_day_f < 0.2 && m_last_time_of_day_f > 0.8)
tod_diff_f = time_of_day_f - m_last_time_of_day_f + 1.0f;
else
tod_diff_f = time_of_day_f - m_last_time_of_day_f;
m_last_time_of_day_f = time_of_day_f;
float time_diff = m_time_of_day_update_timer;
m_time_of_day_update_timer = 0;
if (m_time_of_day_set) {
time_speed = (3600.0f * 24.0f) * tod_diff_f / time_diff;
infostream << "Client: Measured time_of_day speed (old format): "
<< time_speed << " tod_diff_f=" << tod_diff_f
<< " time_diff=" << time_diff << std::endl;
}
}
// Update environment
m_env.setTimeOfDay(time_of_day);
m_env.setTimeOfDaySpeed(time_speed);
m_time_of_day_set = true;
//u32 dr = m_env.getDayNightRatio();
//infostream << "Client: time_of_day=" << time_of_day
// << " time_speed=" << time_speed
// << " dr=" << dr << std::endl;
}
void Client::handleCommand_ChatMessage(NetworkPacket *pkt)
{
/*
u8 version
u8 message_type
u16 sendername length
wstring sendername
u16 length
wstring message
*/
ChatMessage *chatMessage = new ChatMessage();
u8 version, message_type;
*pkt >> version >> message_type;
if (version != 1 || message_type >= CHATMESSAGE_TYPE_MAX) {
delete chatMessage;
return;
}
u64 timestamp;
*pkt >> chatMessage->sender >> chatMessage->message >> timestamp;
chatMessage->timestamp = static_cast<std::time_t>(timestamp);
chatMessage->type = (ChatMessageType) message_type;
// @TODO send this to CSM using ChatMessage object
if (modsLoaded() && m_script->on_receiving_message(
wide_to_utf8(chatMessage->message))) {
// Message was consumed by CSM and should not be handled by client
delete chatMessage;
} else {
pushToChatQueue(chatMessage);
}
}
void Client::handleCommand_ActiveObjectRemoveAdd(NetworkPacket* pkt)
{
/*
u16 count of removed objects
for all removed objects {
u16 id
}
u16 count of added objects
for all added objects {
u16 id
u8 type
u32 initialization data length
string initialization data
}
*/
try {
u8 type;
u16 removed_count, added_count, id;
// Read removed objects
*pkt >> removed_count;
for (u16 i = 0; i < removed_count; i++) {
*pkt >> id;
m_env.removeActiveObject(id);
}
// Read added objects
*pkt >> added_count;
for (u16 i = 0; i < added_count; i++) {
*pkt >> id >> type;
m_env.addActiveObject(id, type, pkt->readLongString());
}
} catch (PacketError &e) {
infostream << "handleCommand_ActiveObjectRemoveAdd: " << e.what()
<< ". The packet is unreliable, ignoring" << std::endl;
}
// m_activeobjects_received is false before the first
// TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD packet is received
m_activeobjects_received = true;
}
void Client::handleCommand_ActiveObjectMessages(NetworkPacket* pkt)
{
/*
for all objects
{
u16 id
u16 message length
string message
}
*/
std::string datastring(pkt->getString(0), pkt->getSize());
std::istringstream is(datastring, std::ios_base::binary);
try {
while (is.good()) {
u16 id = readU16(is);
if (!is.good())
break;
std::string message = deSerializeString16(is);
// Pass on to the environment
m_env.processActiveObjectMessage(id, message);
}
} catch (SerializationError &e) {
errorstream << "Client::handleCommand_ActiveObjectMessages: "
<< "caught SerializationError: " << e.what() << std::endl;
}
}
void Client::handleCommand_Movement(NetworkPacket* pkt)
{
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
float mad, maa, maf, msw, mscr, msf, mscl, msj, lf, lfs, ls, g;
*pkt >> mad >> maa >> maf >> msw >> mscr >> msf >> mscl >> msj
>> lf >> lfs >> ls >> g;
player->movement_acceleration_default = mad * BS;
player->movement_acceleration_air = maa * BS;
player->movement_acceleration_fast = maf * BS;
player->movement_speed_walk = msw * BS;
player->movement_speed_crouch = mscr * BS;
player->movement_speed_fast = msf * BS;
player->movement_speed_climb = mscl * BS;
player->movement_speed_jump = msj * BS;
player->movement_liquid_fluidity = lf * BS;
player->movement_liquid_fluidity_smooth = lfs * BS;
player->movement_liquid_sink = ls * BS;
player->movement_gravity = g * BS;
}
void Client::handleCommand_Fov(NetworkPacket *pkt)
{
f32 fov;
bool is_multiplier = false;
f32 transition_time = 0.0f;
*pkt >> fov >> is_multiplier;
// Wrap transition_time extraction within a
// try-catch to preserve backwards compat
try {
*pkt >> transition_time;
} catch (PacketError &e) {};
LocalPlayer *player = m_env.getLocalPlayer();
assert(player);
player->setFov({ fov, is_multiplier, transition_time });
m_camera->notifyFovChange();
}
void Client::handleCommand_HP(NetworkPacket *pkt)
{
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
u16 oldhp = player->hp;
u16 hp;
*pkt >> hp;
bool damage_effect = true;
try {
*pkt >> damage_effect;
} catch (PacketError &e) {};
player->hp = hp;
if (modsLoaded())
m_script->on_hp_modification(hp);
if (hp < oldhp) {
// Add to ClientEvent queue
ClientEvent *event = new ClientEvent();
event->type = CE_PLAYER_DAMAGE;
event->player_damage.amount = oldhp - hp;
event->player_damage.effect = damage_effect;
m_client_event_queue.push(event);
}
}
void Client::handleCommand_Breath(NetworkPacket* pkt)
{
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
u16 breath;
*pkt >> breath;
player->setBreath(breath);
}
void Client::handleCommand_MovePlayer(NetworkPacket* pkt)
{
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
v3f pos;
f32 pitch, yaw;
*pkt >> pos >> pitch >> yaw;
player->setPosition(pos);
infostream << "Client got TOCLIENT_MOVE_PLAYER"
<< " pos=(" << pos.X << "," << pos.Y << "," << pos.Z << ")"
<< " pitch=" << pitch
<< " yaw=" << yaw
<< std::endl;
/*
Add to ClientEvent queue.
This has to be sent to the main program because otherwise
it would just force the pitch and yaw values to whatever
the camera points to.
*/
ClientEvent *event = new ClientEvent();
event->type = CE_PLAYER_FORCE_MOVE;
event->player_force_move.pitch = pitch;
event->player_force_move.yaw = yaw;
m_client_event_queue.push(event);
}
void Client::handleCommand_DeathScreen(NetworkPacket* pkt)
{
bool set_camera_point_target;
v3f camera_point_target;
*pkt >> set_camera_point_target;
*pkt >> camera_point_target;
ClientEvent *event = new ClientEvent();
event->type = CE_DEATHSCREEN;
event->deathscreen.set_camera_point_target = set_camera_point_target;
event->deathscreen.camera_point_target_x = camera_point_target.X;
event->deathscreen.camera_point_target_y = camera_point_target.Y;
event->deathscreen.camera_point_target_z = camera_point_target.Z;
m_client_event_queue.push(event);
}
void Client::handleCommand_AnnounceMedia(NetworkPacket* pkt)
{
u16 num_files;
*pkt >> num_files;
infostream << "Client: Received media announcement: packet size: "
<< pkt->getSize() << std::endl;
if (m_media_downloader == NULL ||
m_media_downloader->isStarted()) {
const char *problem = m_media_downloader ?
"we already saw another announcement" :
"all media has been received already";
errorstream << "Client: Received media announcement but "
<< problem << "! "
<< " files=" << num_files
<< " size=" << pkt->getSize() << std::endl;
return;
}
// Mesh update thread must be stopped while
// updating content definitions
sanity_check(!m_mesh_update_thread.isRunning());
for (u16 i = 0; i < num_files; i++) {
std::string name, sha1_base64;
*pkt >> name >> sha1_base64;
std::string sha1_raw = base64_decode(sha1_base64);
m_media_downloader->addFile(name, sha1_raw);
}
{
std::string str;
*pkt >> str;
Strfnd sf(str);
while (!sf.at_end()) {
std::string baseurl = trim(sf.next(","));
if (!baseurl.empty()) {
m_remote_media_servers.emplace_back(baseurl);
m_media_downloader->addRemoteServer(baseurl);
}
}
}
m_media_downloader->step(this);
}
void Client::handleCommand_Media(NetworkPacket* pkt)
{
/*
u16 command
u16 total number of file bunches
u16 index of this bunch
u32 number of files in this bunch
for each file {
u16 length of name
string name
u32 length of data
data
}
*/
u16 num_bunches;
u16 bunch_i;
u32 num_files;
*pkt >> num_bunches >> bunch_i >> num_files;
infostream << "Client: Received files: bunch " << bunch_i << "/"
<< num_bunches << " files=" << num_files
<< " size=" << pkt->getSize() << std::endl;
if (num_files == 0)
return;
bool init_phase = m_media_downloader && m_media_downloader->isStarted();
if (init_phase) {
// Mesh update thread must be stopped while
// updating content definitions
sanity_check(!m_mesh_update_thread.isRunning());
}
for (u32 i = 0; i < num_files; i++) {
std::string name, data;
*pkt >> name;
data = pkt->readLongString();
bool ok = false;
if (init_phase) {
ok = m_media_downloader->conventionalTransferDone(name, data, this);
} else {
// Check pending dynamic transfers, one of them must be it
for (const auto &it : m_pending_media_downloads) {
if (it.second->conventionalTransferDone(name, data, this)) {
ok = true;
break;
}
}
}
if (!ok) {
errorstream << "Client: Received media \"" << name
<< "\" but no downloads pending. " << num_bunches << " bunches, "
<< num_files << " in this one. (init_phase=" << init_phase
<< ")" << std::endl;
}
}
}
void Client::handleCommand_NodeDef(NetworkPacket* pkt)
{
infostream << "Client: Received node definitions: packet size: "
<< pkt->getSize() << std::endl;
// Mesh update thread must be stopped while
// updating content definitions
sanity_check(!m_mesh_update_thread.isRunning());
// Decompress node definitions
std::istringstream tmp_is(pkt->readLongString(), std::ios::binary);
std::stringstream tmp_os(std::ios::binary | std::ios::in | std::ios::out);
decompressZlib(tmp_is, tmp_os);
// Deserialize node definitions
m_nodedef->deSerialize(tmp_os, m_proto_ver);
m_nodedef_received = true;
}
void Client::handleCommand_ItemDef(NetworkPacket* pkt)
{
infostream << "Client: Received item definitions: packet size: "
<< pkt->getSize() << std::endl;
// Mesh update thread must be stopped while
// updating content definitions
sanity_check(!m_mesh_update_thread.isRunning());
// Decompress item definitions
std::istringstream tmp_is(pkt->readLongString(), std::ios::binary);
std::stringstream tmp_os(std::ios::binary | std::ios::in | std::ios::out);
decompressZlib(tmp_is, tmp_os);
// Deserialize node definitions
m_itemdef->deSerialize(tmp_os, m_proto_ver);
m_itemdef_received = true;
}
void Client::handleCommand_PlaySound(NetworkPacket* pkt)
{
/*
[0] u32 server_id
[4] u16 name length
[6] char name[len]
[ 6 + len] f32 gain
[10 + len] u8 type
[11 + len] (f32 * 3) pos
[23 + len] u16 object_id
[25 + len] bool loop
[26 + len] f32 fade
[30 + len] f32 pitch
[34 + len] bool ephemeral
*/
s32 server_id;
SimpleSoundSpec spec;
SoundLocation type; // 0=local, 1=positional, 2=object
v3f pos;
u16 object_id;
bool ephemeral = false;
*pkt >> server_id >> spec.name >> spec.gain >> (u8 &)type >> pos >> object_id >> spec.loop;
try {
*pkt >> spec.fade;
*pkt >> spec.pitch;
*pkt >> ephemeral;
} catch (PacketError &e) {};
// Start playing
int client_id = -1;
switch(type) {
case SoundLocation::Local:
client_id = m_sound->playSound(spec);
break;
case SoundLocation::Position:
client_id = m_sound->playSoundAt(spec, pos);
break;
case SoundLocation::Object:
{
ClientActiveObject *cao = m_env.getActiveObject(object_id);
if (cao)
pos = cao->getPosition();
client_id = m_sound->playSoundAt(spec, pos);
break;
}
}
if (client_id != -1) {
// for ephemeral sounds, server_id is not meaningful
if (!ephemeral) {
m_sounds_server_to_client[server_id] = client_id;
m_sounds_client_to_server[client_id] = server_id;
}
if (object_id != 0)
m_sounds_to_objects[client_id] = object_id;
}
}
void Client::handleCommand_StopSound(NetworkPacket* pkt)
{
s32 server_id;
*pkt >> server_id;
std::unordered_map<s32, int>::iterator i = m_sounds_server_to_client.find(server_id);
if (i != m_sounds_server_to_client.end()) {
int client_id = i->second;
m_sound->stopSound(client_id);
}
}
void Client::handleCommand_FadeSound(NetworkPacket *pkt)
{
s32 sound_id;
float step;
float gain;
*pkt >> sound_id >> step >> gain;
std::unordered_map<s32, int>::const_iterator i =
m_sounds_server_to_client.find(sound_id);
if (i != m_sounds_server_to_client.end())
m_sound->fadeSound(i->second, step, gain);
}
void Client::handleCommand_Privileges(NetworkPacket* pkt)
{
m_privileges.clear();
infostream << "Client: Privileges updated: ";
u16 num_privileges;
*pkt >> num_privileges;
for (u16 i = 0; i < num_privileges; i++) {
std::string priv;
*pkt >> priv;
m_privileges.insert(priv);
infostream << priv << " ";
}
infostream << std::endl;
}
void Client::handleCommand_InventoryFormSpec(NetworkPacket* pkt)
{
LocalPlayer *player = m_env.getLocalPlayer();
assert(player != NULL);
// Store formspec in LocalPlayer
player->inventory_formspec = pkt->readLongString();
}
void Client::handleCommand_DetachedInventory(NetworkPacket* pkt)
{
std::string name;
bool keep_inv = true;
*pkt >> name >> keep_inv;
infostream << "Client: Detached inventory update: \"" << name
<< "\", mode=" << (keep_inv ? "update" : "remove") << std::endl;
const auto &inv_it = m_detached_inventories.find(name);
if (!keep_inv) {
if (inv_it != m_detached_inventories.end()) {
delete inv_it->second;
m_detached_inventories.erase(inv_it);
}
return;
}
Inventory *inv = nullptr;
if (inv_it == m_detached_inventories.end()) {
inv = new Inventory(m_itemdef);
m_detached_inventories[name] = inv;
} else {
inv = inv_it->second;
}
u16 ignore;
*pkt >> ignore; // this used to be the length of the following string, ignore it
std::string contents(pkt->getRemainingString(), pkt->getRemainingBytes());
std::istringstream is(contents, std::ios::binary);
inv->deSerialize(is);
}
void Client::handleCommand_ShowFormSpec(NetworkPacket* pkt)
{
std::string formspec = pkt->readLongString();
std::string formname;
*pkt >> formname;
ClientEvent *event = new ClientEvent();
event->type = CE_SHOW_FORMSPEC;
// pointer is required as event is a struct only!
// adding a std:string to a struct isn't possible
event->show_formspec.formspec = new std::string(formspec);
event->show_formspec.formname = new std::string(formname);
m_client_event_queue.push(event);
}
void Client::handleCommand_SpawnParticle(NetworkPacket* pkt)
{
std::string datastring(pkt->getString(0), pkt->getSize());
std::istringstream is(datastring, std::ios_base::binary);
ParticleParameters p;
p.deSerialize(is, m_proto_ver);
ClientEvent *event = new ClientEvent();
event->type = CE_SPAWN_PARTICLE;
event->spawn_particle = new ParticleParameters(p);
m_client_event_queue.push(event);
}
void Client::handleCommand_AddParticleSpawner(NetworkPacket* pkt)
{
std::string datastring(pkt->getString(0), pkt->getSize());
std::istringstream is(datastring, std::ios_base::binary);
ParticleSpawnerParameters p;
u32 server_id;
u16 attached_id = 0;
p.amount = readU16(is);
p.time = readF32(is);
// older protocols do not support tweening, and send only
// static ranges, so we can't just use the normal serialization
// functions for the older values.