games/minimal/mods/default/textures/default_leaves.png

/*
Minetest
Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>

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 "tileanimation.h"
#include "gettext.h"
#include "skyparams.h"

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 recieved 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) {
		if (chosen_auth_mechanism == AUTH_MECHANISM_FIRST_SRP &&
				!m_simple_singleplayer_mode &&
				!getServerAddress().isLocalhost() &&
				g_settings->getBool("enable_register_confirmation")) {
			promptConfirmRegistration(chosen_auth_mechanism);
		} 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 = "";

	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: Recieved 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) {
		// 13/03/15 Legacy code from 0.4.12 and lesser 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 = SERVER_ACCESSDENIED_UNEXPECTED_DATA;
	*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_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;
	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 = deSerializeString(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;

	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;
		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);
	}

	try {
		std::string str;

		*pkt >> str;

		Strfnd sf(str);
		while(!sf.at_end()) {
			std::string baseurl = trim(sf.next(","));
			if (!baseurl.empty())
				m_media_downloader->addRemoteServer(baseurl);
		}
	}
	catch(SerializationError& e) {
		// not supported by server or turned off
	}

	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;

	if (!m_media_downloader || !m_media_downloader->isStarted()) {
		const char *problem = m_media_downloader ?
			"media has not been requested" :
			"all media has been received already";
		errorstream << "Client: Received media but "
			<< problem << "! "
			<< " bunch " << bunch_i << "/" << num_bunches
			<< " 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 (u32 i=0; i < num_files; i++) {
		std::string name;

		*pkt >> name;

		std::string data = pkt->readLongString();

		m_media_downloader->conventionalTransferDone(
				name, data, this);
	}
}

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::ostringstream tmp_os;
	decompressZlib(tmp_is, tmp_os);

	// Deserialize node definitions
	std::istringstream tmp_is2(tmp_os.str());
	m_nodedef->deSerialize(tmp_is2);
	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::ostringstream tmp_os;
	decompressZlib(tmp_is, tmp_os);

	// Deserialize node definitions
	std::istringstream tmp_is2(tmp_os.str());
	m_itemdef->deSerialize(tmp_is2);
	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
ofs	hex dump	ascii
0000	89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 00 10 00 00 00 10 08 06 00 00 00 1f f3 ff	.PNG........IHDR................
0020	61 00 00 03 00 50 4c 54 45 00 00 00 ff 00 00 00 ff 00 ff ff 00 00 00 ff ff 00 ff 00 ff ff ff ff	a....PLTE.......................
0040	ff db db db b6 b6 b6 92 92 92 6d 6d 6d 49 49 49 24 24 24 db 00 00 b6 00 00 92 00 00 6d 00 00 49	..........mmmIII$$$.........m..I
0060	00 00 24 00 00 00 db 00 00 b6 00 00 92 00 00 6d 00 00 49 00 00 24 00 db db 00 b6 b6 00 92 92 00	..$............m..I..$..........
0080	6d 6d 00 49 49 00 24 24 00 00 00 db 00 00 b6 00 00 92 00 00 6d 00 00 49 00 00 24 db 00 db b6 00	mm.II.$$............m..I..$.....
00a0	b6 92 00 92 6d 00 6d 49 00 49 24 00 24 00 db db 00 b6 b6 00 92 92 00 6d 6d 00 49 49 00 24 24 ff	....m.mI.I$.$..........mm.II.$$.
00c0	db db db b6 b6 b6 92 92 92 6d 6d 6d 49 49 49 24 24 ff b6 b6 db 92 92 b6 6d 6d 92 49 49 6d 24 24	.........mmmIII$$.......mm.IIm$$
00e0	ff 92 92 db 6d 6d b6 49 49 92 24 24 ff 6d 6d db 49 49 b6 24 24 ff 49 49 db 24 24 ff 24 24 db ff	....mm.II.$$.mm.II.$$.II.$$.$$..
0100	db b6 db b6 92 b6 92 6d 92 6d 49 6d 49 24 49 24 b6 ff b6 92 db 92 6d b6 6d 49 92 49 24 6d 24 92	.......m.mImI$I$......m.mI.I$m$.
0120	ff 92 6d db 6d 49 b6 49 24 92 24 6d ff 6d 49 db 49 24 b6 24 49 ff 49 24 db 24 24 ff 24 db db ff	..m.mI.I$.$m.mI.I$.$I.I$.$$.$...
0140	b6 b6 db 92 92 b6 6d 6d 92 49 49 6d 24 24 49 b6 b6 ff 92 92 db 6d 6d b6 49 49 92 24 24 6d 92 92	......mm.IIm$$I......mm.II.$$m..
0160	ff 6d 6d db 49 49 b6 24 24 92 6d 6d ff 49 49 db 24 24 b6 49 49 ff 24 24 db 24 24 ff ff ff db db	.mm.II.$$.mm.II.$$.II.$$.$$.....
0180	db b6 b6 b6 92 92 92 6d 6d 6d 49 49 49 24 ff ff b6 db db 92 b6 b6 6d 92 92 49 6d 6d 24 ff ff 92	.......mmmIII$........m..Imm$...
01a0	db db 6d b6 b6 49 92 92 24 ff ff 6d db db 49 b6 b6 24 ff ff 49 db db 24 ff ff 24 ff db ff db b6	..m..I..$..m..I..$..I..$..$.....
01c0	db b6 92 b6 92 6d 92 6d 49 6d 49 24 49 ff b6 ff db 92 db b6 6d b6 92 49 92 6d 24 6d ff 92 ff db	.....m.mImI$I.......m..I.m$m....
01e0	6d db b6 49 b6 92 24 92 ff 6d ff db 49 db b6 24 b6 ff 49 ff db 24 db ff 24 ff db ff ff b6 db db	m..I..$..m..I..$..I..$..$.......
0200	92 b6 b6 6d 92 92 49 6d 6d 24 49 49 b6 ff ff 92 db db 6d b6 b6 49 92 92 24 6d 6d 92 ff ff 6d db	...m..Imm$II......m..I..$mm...m.
0220	db 49 b6 b6 24 92 92 6d ff ff 49 db db 24 b6 b6 49 ff ff 24 db db 24 ff ff ff db b6 db b6 92 b6	.I..$..m..I..$..I..$..$.........
0240	92 6d 92 6d 49 6d 49 24 49 24 00 ff b6 92 db 92 6d b6 6d 49 92 49 24 6d 24 00 ff b6 db db 92 b6	.m.mImI$I$......m.mI.I$m$.......
0260	b6 6d 92 92 49 6d 6d 24 49 49 00 24 ff 92 b6 db 6d 92 b6 49 6d 92 24 49 6d 00 24 db b6 ff b6 92	.m..Imm$II.$....m..Im.$Im.$.....
0280	db 92 6d b6 6d 49 92 49 24 6d 24 00 49 b6 92 ff 92 6d db 6d 49 b6 49 24 92 24 00 6d b6 db ff 92	..m.mI.I$m$.I....m.mI.I$.$.m....
02a0	b6 db 6d 92 b6 49 6d 92 24 49 6d 00 24 49 92 b6 ff 6d 92 db 49 6d b6 24 49 92 00 24 6d b6 ff db	..m..Im.$Im.$I...m..Im.$I..$m...
02c0	92 db b6 6d b6 92 49 92 6d 24 6d 49 00 49 24 92 ff b6 6d db 92 49 b6 6d 24 92 49 00 6d 24 db ff	...m..I.m$mI.I$...m..I.m$.I.m$..
02e0	b6 b6 db 92 92 b6 6d 6d 92 49 49 6d 24 24 49 00 b6 ff 92 92 db 6d 6d b6 49 49 92 24 24 6d 00 ff	......mm.IIm$$I......mm.II.$$m..
0300	b6 00 db 92 00 b6 6d 00 92 49 00 ff 00 b6 db 00 92 b6 00 6d 92 00 49 00 b6 ff 00 92 db 00 6d b6	......m..I.........m..I.......m.
0320	00 49 92 00 00 00 00 00 00 cf 2a 02 04 00 00 03 4e 49 44 41 54 18 19 05 c1 db 4f 53 07 00 c7 f1	.I........*.....NIDAT.....OS....
0340	ef e9 39 ed 69 0b 95 72 53 4a e9 4d 5a b9 b4 54 a0 a5 54 5b 41 2e 05 c4 72 6d 19 b2 39 e4 b2 46	..9.i..rSJ.MZ..T..T[A...rm..9..F
0360	8d 98 4d 40 91 4d 8d 9b 33 5e e6 92 65 59 36 7c 50 b7 b8 f9 b8 2c d9 cb 1e dd b2 fd 5d bf 7d 3e	..M@.M..3^..eY6\|P....,......].}>
0380	cc fd 64 69 e7 bd a9 c2 6e 1d d1 71 97 3a 46 6c ed bc 4d eb 74 c5 47 f9 c9 71 7a 37 21 5a 85 fc	..di....n..q.:Fl..M.t.G..qz7!Z..
03a0	1d 74 ee 56 bb 56 8e 9a d4 bf e9 57 fb 34 a4 d6 9d b0 ff 77 a3 e6 bf b7 54 79 65 50 aa 65 94 cc	.t.V.V.....W.4.....w....TyeP.e..
03c0	58 8a 2d d7 d3 55 f1 a8 63 16 a5 6a a6 4a 0f eb 88 ad 18 4a 7c 64 c8 9f 42 27 17 dc 4a 4c 37 28	X.-..U..c..j.J.....J\|d..B'..JL7(
03e0	7d 15 a8 fd 6e 6a f2 19 a4 3f 71 53 b8 ef 20 5e 71 10 9b 77 a8 ad 88 02 63 86 a2 b3 2e 0d dd 74	}...nj...?qS...^q..w....c......t
0400	29 3e ef 22 55 33 59 7f 96 65 78 07 4e 74 b9 a8 1c b9 e1 c2 43 34 fd 1c 96 df 40 eb 79 14 2e 3a	)>."U3Y..ex.Nt......C4....@.y..:
0420	55 dc 6a 53 a4 ec 24 34 83 7a 36 4c c5 73 8d 8a 57 20 7d 03 ae fd d9 a5 ce 54 8b 22 b3 1e 55 de	U.jS..$4.z6L.s..W.}......T."..U.
0440	20 06 2a 51 55 5f fa 95 d8 32 94 dd a9 d7 e2 2b 34 f6 c2 20 5e 81 48 c9 a7 44 d9 a3 d0 ac a9 d0	..*QU_...2.....+4...^.H..D......
0460	45 87 0a 87 7e ce 7c 81 da fa 1b 14 5c 81 dc 6a 00 4e 2d bb b9 f4 0e ae fd 85 aa ef 0c 9d 7f 64	E...~.\|.....\..j.N-............d
0480	d0 31 87 c2 33 96 4e cd 79 09 44 dd 5a ff ad 41 c9 7d 74 b2 af 89 e2 81 87 9e c5 06 0d 6f 7b d4	.1..3.N.y.D.Z..A.}t..........o{.
04a0	56 42 54 8f 6c dd ff 2f cf ed 7f 2c be fa b7 93 89 6f 60 f2 f3 26 a5 6a 86 7a 97 bc 4a e4 8f 31	VBT.l../...,.....o`..&.j.z..J..1
04c0	bd d7 c1 f0 81 8b a9 a7 b0 fa 33 ca de 41 83 7b a6 c2 65 44 e6 96 c5 e4 0b b4 f2 d6 d2 dd f7 7e	..........3..A.{..eD...........~
04e0	5d f9 a5 89 e9 c3 16 8d 1e d6 91 db 43 dd 79 bf 42 39 b7 c2 f3 90 dd 85 96 32 fa e0 65 bb ce ee	]...........C.y.B9.......2..e...
0500	b4 32 f6 c0 0b b1 05 17 89 75 43 97 7f 45 f3 cf bd 0a 2f a1 f9 e7 5e f2 fb 90 bd 5e af f6 98 2d	.2.......uC..E..../...^....^...-
0520	7f 0e 05 cf 1a 64 6e 38 55 7a ea e1 e2 b7 50 fb c3 cd e4 d7 6e 48 6e a0 a9 ef 20 38 6c e9 d4 26	.....dn8Uz....P.....nHn....8l..&
0540	8a 4d 78 c8 ed a1 fe 0d 38 77 0f 22 bd 3e 75 df b4 09 ad 1a c4 66 51 e1 ae 43 23 bb 6e 15 3f 73	.Mx.....8w.".>u......fQ..C#.n.?s
0560	d1 bd 6c 8b 64 36 a2 a9 17 26 97 de d8 2a 3e 30 94 fd b0 5e e1 21 2f e1 92 ad 89 7b 96 fa 47 02	..l.d6...&...*>0...^.!/....{..G.
0580	2a ec d5 93 b9 07 89 15 43 c1 71 34 70 cd d0 d2 91 87 d6 08 e2 c2 0f 96 7a cf a0 68 15 05 2f 1a	*.......C.q4p...........z..h../.
05a0	ca 6c d7 e9 e4 a4 8f 70 d9 d6 b9 03 97 72 e5 e3 8a 2d 9b 4a ac 39 14 5e 45 91 45 a7 d2 d7 51 cf	.l.....p.....r...-.J.9.^E.E...Q.
05c0	3a 04 27 11 73 5f 06 14 5f 83 ce 8a 4b a1 51 53 03 9f a2 f5 d7 51 f9 93 50 b8 0d 99 d1 a8 1a 93	:.'.s_.._...K.QS.....Q..P.......
05e0	36 7d 57 51 ac 0a f1 15 8b c1 2d 2f be 0e 08 4f 19 30 ba dd ae f1 c7 26 d1 05 b4 f0 28 a0 70 de	6}WQ......-/...O.0.....&....(.p.
0600	45 e7 aa a9 c8 98 ad e3 bd b6 62 8b 28 75 d9 22 be e8 50 20 ec 54 72 03 d2 db 0e da 87 2c 35 0f	E.........b.(u."..P..Tr......,5.
0620	22 1a 13 10 88 fb b8 f2 3a c8 95 a3 28 cd 43 28 30 66 c8 0e 41 e9 e0 84 d6 7e 6c 51 ef 6c b3 02	".......:...(.C(0f..A....~lQ.l..
0640	69 93 e6 3c 24 37 50 4b dc 54 a8 cf 96 3f 03 14 6f 35 c9 6a 44 d1 12 b4 a5 5d 0a 64 9c 0a 8c a0	i..<$7PK.T...?..o5.jD....].d....
0660	e0 b8 41 b6 06 2d 7d 86 a2 05 af 42 a3 6e a6 1f 5b ea fe 18 cd 3c f1 e9 d8 69 d4 53 f5 e8 7f c8	..A..-}....B.n..[....<...i.S....
0680	e9 36 44 ac 38 28 ce 00 00 00 00 49 45 4e 44 ae 42 60 82	.6D.8(.....IEND.B`.