/
client.cpp
1913 lines (1606 loc) · 46.9 KB
/
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 "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/renderingengine.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 "minimap.h"
#include "mods.h"
#include "profiler.h"
#include "shader.h"
#include "gettext.h"
#include "clientmap.h"
#include "clientmedia.h"
#include "version.h"
#include "database-sqlite3.h"
#include "serialization.h"
#include "guiscalingfilter.h"
#include "script/scripting_client.h"
#include "game.h"
#include "chatmessage.h"
#include "translation.h"
extern gui::IGUIEnvironment* guienv;
/*
Client
*/
Client::Client(
const char *playername,
const std::string &password,
const std::string &address_name,
MapDrawControl &control,
IWritableTextureSource *tsrc,
IWritableShaderSource *shsrc,
IWritableItemDefManager *itemdef,
IWritableNodeDefManager *nodedef,
ISoundManager *sound,
MtEventManager *event,
bool ipv6,
GameUIFlags *game_ui_flags
):
m_tsrc(tsrc),
m_shsrc(shsrc),
m_itemdef(itemdef),
m_nodedef(nodedef),
m_sound(sound),
m_event(event),
m_mesh_update_thread(this),
m_env(
new ClientMap(this, control, 666),
tsrc, this
),
m_particle_manager(&m_env),
m_con(new con::Connection(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, ipv6, this)),
m_address_name(address_name),
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_flags(game_ui_flags)
{
// Add local player
m_env.setLocalPlayer(new LocalPlayer(this, playername));
if (g_settings->getBool("enable_minimap")) {
m_minimap = new Minimap(this);
}
m_cache_save_interval = g_settings->getU16("server_map_save_interval");
m_modding_enabled = g_settings->getBool("enable_client_modding");
m_script = new ClientScripting(this);
m_env.setScript(m_script);
m_script->setEnv(&m_env);
}
void Client::loadMods()
{
// Load builtin
scanModIntoMemory(BUILTIN_MOD_NAME, getBuiltinLuaPath());
// If modding is not enabled, don't load mods, just builtin
if (!m_modding_enabled) {
return;
}
ClientModConfiguration modconf(getClientModsLuaPath());
m_mods = modconf.getMods();
std::vector<ModSpec> unsatisfied_mods = modconf.getUnsatisfiedMods();
// complain about mods with unsatisfied dependencies
if (!modconf.isConsistent()) {
modconf.printUnsatisfiedModsError();
}
// Print mods
infostream << "Client Loading mods: ";
for (const ModSpec &mod : m_mods)
infostream << mod.name << " ";
infostream << std::endl;
// Load and run "mod" scripts
for (const ModSpec &mod : m_mods) {
if (!string_allowed(mod.name, MODNAME_ALLOWED_CHARS)) {
throw ModError("Error loading mod \"" + mod.name +
"\": Mod name does not follow naming conventions: "
"Only characters [a-z0-9_] are allowed.");
}
scanModIntoMemory(mod.name, mod.path);
}
}
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) {
std::string filename = j.name;
if (j.dir) {
scanModSubfolder(mod_name, mod_path, mod_subpath
+ filename + DIR_DELIM);
continue;
}
std::replace( mod_subpath.begin(), mod_subpath.end(), DIR_DELIM_CHAR, '/');
m_mod_files[mod_name + ":" + mod_subpath + filename] = full_path + filename;
}
}
void Client::initMods()
{
m_script->loadModFromMemory(BUILTIN_MOD_NAME);
// If modding is not enabled, don't load mods, just builtin
if (!m_modding_enabled) {
return;
}
// Load and run "mod" scripts
for (const ModSpec &mod : m_mods)
m_script->loadModFromMemory(mod.name);
}
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;
// Don't disable this part when modding is disabled, it's used in builtin
m_script->on_shutdown();
//request all client managed threads to stop
m_mesh_update_thread.stop();
// Save local server map
if (m_localdb) {
infostream << "Local map saving ended." << std::endl;
m_localdb->endSave();
}
delete m_script;
}
bool Client::isShutdown()
{
return m_shutdown || !m_mesh_update_thread.isRunning();
}
Client::~Client()
{
m_shutdown = true;
m_con->Disconnect();
m_mesh_update_thread.stop();
m_mesh_update_thread.wait();
while (!m_mesh_update_thread.m_queue_out.empty()) {
MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_frontNoEx();
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
while (RenderingEngine::get_mesh_cache()->getMeshCount() != 0) {
scene::IAnimatedMesh *mesh = RenderingEngine::get_mesh_cache()->getMeshByIndex(0);
if (mesh)
RenderingEngine::get_mesh_cache()->removeMesh(mesh);
}
delete m_minimap;
}
void Client::connect(Address address, bool is_local_server)
{
initLocalMapSaving(address, m_address_name, is_local_server);
m_con->SetTimeoutMs(0);
m_con->Connect(address);
}
void Client::step(float dtime)
{
// Limit a bit
if(dtime > 2.0)
dtime = 2.0;
if(m_ignore_damage_timer > dtime)
m_ignore_damage_timer -= dtime;
else
m_ignore_damage_timer = 0.0;
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 <= 0.0)
{
counter = 20.0;
infostream << "Client packetcounter (" << m_packetcounter_timer
<< "):"<<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)) {
ScopeProfiler sp(g_profiler, "Client: map timer and unload");
std::vector<v3s16> deleted_blocks;
m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
g_settings->getFloat("client_unload_unused_data_timeout"),
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
*/
// Control local player (0ms)
LocalPlayer *player = m_env.getLocalPlayer();
assert(player);
player->applyControl(dtime, &m_env);
// Step environment
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) {
if (m_ignore_damage_timer <= 0) {
u8 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;
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;
while (!m_mesh_update_thread.m_queue_out.empty())
{
num_processed_meshes++;
MinimapMapblock *minimap_mapblock = NULL;
bool do_mapper_update = true;
MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_frontNoEx();
MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(r.p);
if (block) {
// Delete the old mesh
delete block->mesh;
block->mesh = nullptr;
if (r.mesh) {
minimap_mapblock = r.mesh->moveMinimapMapblock();
if (minimap_mapblock == NULL)
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;
}
} else {
delete r.mesh;
}
if (m_minimap && do_mapper_update)
m_minimap->addBlock(r.p, minimap_mapblock);
if (r.ack_block_to_server) {
/*
Acknowledge block
[0] u8 count
[1] v3s16 pos_0
*/
sendGotBlocks(r.p);
}
}
if (num_processed_meshes > 0)
g_profiler->graphAdd("num_processed_meshes", num_processed_meshes);
}
/*
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;
}
}
/*
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)
{
float interval = 10.0;
float count_before = floor(m_inventory_from_server_age / interval);
m_inventory_from_server_age += dtime;
float count_after = 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
LocalPlayer *player = m_env.getLocalPlayer();
player->inventory = *m_inventory_from_server;
m_inventory_updated = true;
}
}
/*
Update positions of sounds attached to objects
*/
{
for (auto &m_sounds_to_object : m_sounds_to_objects) {
int 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->updateSoundPosition(client_id, cao->getPosition());
}
}
/*
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<s32> removed_server_ids;
for (std::unordered_map<s32, int>::iterator i = m_sounds_server_to_client.begin();
i != m_sounds_server_to_client.end();) {
s32 server_id = i->first;
int client_id = i->second;
++i;
if(!m_sound->soundExists(client_id)) {
m_sounds_server_to_client.erase(server_id);
m_sounds_client_to_server.erase(client_id);
m_sounds_to_objects.erase(client_id);
removed_server_ids.push_back(server_id);
}
}
// Sync to server
if(!removed_server_ids.empty()) {
sendRemovedSounds(removed_server_ids);
}
}
m_mod_storage_save_timer -= dtime;
if (m_mod_storage_save_timer <= 0.0f) {
verbosestream << "Saving registered mod storages." << std::endl;
m_mod_storage_save_timer = g_settings->getFloat("server_map_save_interval");
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());
}
}
}
// 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)
{
// Silly irrlicht's const-incorrectness
Buffer<char> data_rw(data.c_str(), data.size());
std::string name;
const char *image_ext[] = {
".png", ".jpg", ".bmp", ".tga",
".pcx", ".ppm", ".psd", ".wal", ".rgb",
NULL
};
name = removeStringEnd(filename, image_ext);
if (!name.empty()) {
verbosestream<<"Client: Attempting to load image "
<<"file \""<<filename<<"\""<<std::endl;
io::IFileSystem *irrfs = RenderingEngine::get_filesystem();
video::IVideoDriver *vdrv = RenderingEngine::get_video_driver();
// Create an irrlicht memory file
io::IReadFile *rfile = irrfs->createMemoryReadFile(
*data_rw, data_rw.getSize(), "_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()) {
verbosestream<<"Client: Attempting to load sound "
<<"file \""<<filename<<"\""<<std::endl;
m_sound->loadSoundData(name, data);
return true;
}
const char *model_ext[] = {
".x", ".b3d", ".md2", ".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()) {
verbosestream << "Client: Loading translation: "
<< "\"" << filename << "\"" << std::endl;
g_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;
if (timeout) {
m_access_denied = true;
m_access_denied_reason = gettext("Connection timed out.");
}
}
/*
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)" << 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;
}
const std::string world_path = porting::path_user
+ DIR_DELIM + "worlds"
+ DIR_DELIM + "server_"
+ hostname + "_" + std::to_string(address.getPort());
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()
{
u64 start_ms = porting::getTimeMs();
for(;;)
{
// Limit time even if there would be huge amounts of data to
// process
if(porting::getTimeMs() > start_ms + 100)
break;
try {
Receive();
g_profiler->graphAdd("client_received_packets", 1);
}
catch(con::NoIncomingDataException &e) {
break;
}
catch(con::InvalidIncomingDataException &e) {
infostream<<"Client::ReceiveAll(): "
"InvalidIncomingDataException: what()="
<<e.what()<<std::endl;
}
}
}
void Client::Receive()
{
NetworkPacket pkt;
m_con->Receive(&pkt);
ProcessData(&pkt);
}
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();
u32 sender_peer_id = pkt->getPeerId();
//infostream<<"Client: received command="<<command<<std::endl;
m_packetcounter.add((u16)command);
/*
If this check is removed, be sure to change the queue
system to know the ids
*/
if(sender_peer_id != PEER_ID_SERVER) {
infostream << "Client::ProcessData(): Discarding data not "
"coming from server: peer_id=" << sender_peer_id
<< std::endl;
return;
}
// Command must be handled into ToClientCommandHandler
if (command >= TOCLIENT_NUM_MSG_TYPES) {
infostream << "Client: Ignoring unknown command "
<< command << std::endl;
return;
}
/*
* Those packets are handled before m_server_ser_ver is set, it's normal
* But we must use the new ToClientConnectionState in the future,
* as a byte mask
*/
if(toClientCommandTable[command].state == TOCLIENT_STATE_NOT_CONNECTED) {
handleCommand(pkt);
return;
}
if(m_server_ser_ver == SER_FMT_VER_INVALID) {
infostream << "Client: Server serialization"
" format invalid or not initialized."
" Skipping incoming command=" << command << std::endl;
return;
}
/*
Handle runtime commands
*/
handleCommand(pkt);
}
void Client::Send(NetworkPacket* pkt)
{
m_con->Send(PEER_ID_SERVER,
serverCommandFactoryTable[pkt->getCommand()].channel,
pkt,
serverCommandFactoryTable[pkt->getCommand()].reliable);
}
// Will fill up 12 + 12 + 4 + 4 + 4 bytes
void writePlayerPos(LocalPlayer *myplayer, ClientMap *clientMap, NetworkPacket *pkt)
{
v3f pf = myplayer->getPosition() * 100;
v3f sf = myplayer->getSpeed() * 100;
s32 pitch = myplayer->getPitch() * 100;
s32 yaw = myplayer->getYaw() * 100;
u32 keyPressed = myplayer->keyPressed;
// scaled by 80, so that pi can fit into a u8
u8 fov = clientMap->getCameraFov() * 80;
u8 wanted_range = MYMIN(255,
std::ceil(clientMap->getControl().wanted_range / MAP_BLOCKSIZE));
v3s32 position(pf.X, pf.Y, pf.Z);
v3s32 speed(sf.X, sf.Y, sf.Z);
/*
Format:
[0] v3s32 position*100
[12] v3s32 speed*100
[12+12] s32 pitch*100
[12+12+4] s32 yaw*100
[12+12+4+4] u32 keyPressed
[12+12+4+4+4] u8 fov*80
[12+12+4+4+4+1] u8 ceil(wanted_range / MAP_BLOCKSIZE)
*/
*pkt << position << speed << pitch << yaw << keyPressed;
*pkt << fov << wanted_range;
}
void Client::interact(u8 action, const PointedThing& pointed)
{
if(m_state != LC_Ready) {
errorstream << "Client::interact() "
"Canceled (not connected)"
<< std::endl;
return;
}
LocalPlayer *myplayer = m_env.getLocalPlayer();
if (myplayer == NULL)
return;
/*
[0] u16 command
[2] u8 action
[3] u16 item
[5] u32 length of the next item (plen)
[9] serialized PointedThing
[9 + plen] player position information
actions:
0: start digging (from undersurface) or use
1: stop digging (all parameters ignored)
2: digging completed
3: place block or item (to abovesurface)
4: use item
5: perform secondary action of item
*/
NetworkPacket pkt(TOSERVER_INTERACT, 1 + 2 + 0);
pkt << action;
pkt << (u16)getPlayerItem();
std::ostringstream tmp_os(std::ios::binary);
pointed.serialize(tmp_os);
pkt.putLongString(tmp_os.str());
writePlayerPos(myplayer, &m_env.getClientMap(), &pkt);
Send(&pkt);
}
void Client::deleteAuthData()
{
if (!m_auth_data)
return;
switch (m_chosen_auth_mech) {
case AUTH_MECHANISM_FIRST_SRP:
break;
case AUTH_MECHANISM_SRP:
srp_user_delete((SRPUser *) m_auth_data);
m_auth_data = NULL;
break;
case AUTH_MECHANISM_LEGACY_PASSWORD:
case AUTH_MECHANISM_NONE:
break;
}
m_chosen_auth_mech = AUTH_MECHANISM_NONE;
}
AuthMechanism Client::choseAuthMech(const u32 mechs)
{
if (mechs & AUTH_MECHANISM_SRP)
return AUTH_MECHANISM_SRP;
if (mechs & AUTH_MECHANISM_FIRST_SRP)
return AUTH_MECHANISM_FIRST_SRP;
return AUTH_MECHANISM_NONE;
}
void Client::sendInit(const std::string &playerName)
{
NetworkPacket pkt(TOSERVER_INIT, 1 + 2 + 2 + (1 + playerName.size()));
// we don't support network compression yet
u16 supp_comp_modes = NETPROTO_COMPRESSION_NONE;
pkt << (u8) SER_FMT_VER_HIGHEST_READ << (u16) supp_comp_modes;
pkt << (u16) CLIENT_PROTOCOL_VERSION_MIN << (u16) CLIENT_PROTOCOL_VERSION_MAX;
pkt << playerName;
Send(&pkt);
}
void Client::startAuth(AuthMechanism chosen_auth_mechanism)
{
m_chosen_auth_mech = chosen_auth_mechanism;
switch (chosen_auth_mechanism) {
case AUTH_MECHANISM_FIRST_SRP: {
// send srp verifier to server
std::string verifier;
std::string salt;
generate_srp_verifier_and_salt(getPlayerName(), m_password,
&verifier, &salt);
NetworkPacket resp_pkt(TOSERVER_FIRST_SRP, 0);
resp_pkt << salt << verifier << (u8)((m_password.empty()) ? 1 : 0);
Send(&resp_pkt);
break;
}
case AUTH_MECHANISM_SRP: {
u8 legacy_based_on = 1;
std::string playername_u = lowercase(getPlayerName());
m_auth_data = srp_user_new(SRP_SHA256, SRP_NG_2048,
getPlayerName().c_str(), playername_u.c_str(),
(const unsigned char *) m_password.c_str(),
m_password.length(), NULL, NULL);
char *bytes_A = 0;
size_t len_A = 0;
SRP_Result res = srp_user_start_authentication(
(struct SRPUser *) m_auth_data, NULL, NULL, 0,
(unsigned char **) &bytes_A, &len_A);
FATAL_ERROR_IF(res != SRP_OK, "Creating local SRP user failed.");
NetworkPacket resp_pkt(TOSERVER_SRP_BYTES_A, 0);
resp_pkt << std::string(bytes_A, len_A) << legacy_based_on;
Send(&resp_pkt);
break;
}
case AUTH_MECHANISM_LEGACY_PASSWORD:
case AUTH_MECHANISM_NONE:
break; // not handled in this method
}