223 lines
5.3 KiB
Go
223 lines
5.3 KiB
Go
package main
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import (
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"bytes"
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"context"
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"encoding/json"
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"flag"
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"fmt"
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"image"
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"image/png"
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"io"
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"os"
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"path"
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"regexp"
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"strings"
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"github.com/google/subcommands"
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"github.com/sandertv/gophertunnel/minecraft"
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"github.com/sandertv/gophertunnel/minecraft/protocol"
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"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
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)
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type Skin struct {
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protocol.Skin
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}
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func (skin *Skin) WriteGeometry(output_path string) error {
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os.Mkdir(output_path, 0755)
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f, err := os.Create(path.Join(output_path, "geometry.json"))
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if err != nil {
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return fmt.Errorf("failed to write Geometry %s: %s", output_path, err)
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}
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defer f.Close()
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io.Copy(f, bytes.NewReader(skin.SkinGeometry))
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return nil
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}
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func (skin *Skin) WriteCape(output_path string) error {
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os.Mkdir(output_path, 0755)
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f, err := os.Create(path.Join(output_path, "cape.png"))
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if err != nil {
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return fmt.Errorf("failed to write Cape %s: %s", output_path, err)
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}
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defer f.Close()
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cape_tex := image.NewRGBA(image.Rect(0, 0, int(skin.CapeImageWidth), int(skin.CapeImageHeight)))
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cape_tex.Pix = skin.CapeData
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if err := png.Encode(f, cape_tex); err != nil {
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return fmt.Errorf("error writing skin: %s", err)
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}
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return nil
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}
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func (skin *Skin) WriteAnimations(output_path string) error {
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os.Mkdir(output_path, 0755)
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return fmt.Errorf("%s has animations (unimplemented)", output_path)
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}
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func (skin *Skin) WriteTexture(output_path string) error {
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f, err := os.Create(output_path + ".png")
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if err != nil {
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return fmt.Errorf("error writing Texture: %s", err)
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}
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defer f.Close()
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skin_tex := image.NewRGBA(image.Rect(0, 0, int(skin.SkinImageWidth), int(skin.SkinImageHeight)))
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skin_tex.Pix = skin.SkinData
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if err := png.Encode(f, skin_tex); err != nil {
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return fmt.Errorf("error writing Texture: %s", err)
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}
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return nil
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}
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func (skin *Skin) Write(output_path, name string) error {
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complex := false
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skin_dir := path.Join(output_path, name)
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if len(skin.SkinGeometry) > 0 {
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if err := skin.WriteGeometry(skin_dir); err != nil {
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return err
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}
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complex = true
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}
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if len(skin.CapeData) > 0 {
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if err := skin.WriteCape(skin_dir); err != nil {
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return err
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}
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complex = true
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}
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if len(skin.Animations) > 0 {
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if err := skin.WriteAnimations(skin_dir); err != nil {
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return err
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}
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complex = true
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}
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var err error
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if complex {
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err = skin.WriteTexture(path.Join(skin_dir, "skin"))
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} else {
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err = skin.WriteTexture(skin_dir)
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}
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return err
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}
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var name_regexp = regexp.MustCompile(`§.`)
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func cleanup_name(name string) string {
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name = strings.Split(name, "\n")[0]
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var _tmp struct {
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K string `json:"k"`
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}
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err := json.Unmarshal([]byte(name), &_tmp)
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if err == nil {
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name = _tmp.K
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}
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name = string(name_regexp.ReplaceAll([]byte(name), []byte("")))
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name = strings.TrimSpace(name)
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return name
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}
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func write_skin(output_path, name string, skin protocol.Skin) {
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if !strings.HasPrefix(name, skin_filter_player) {
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return
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}
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fmt.Printf("Writing skin for %s\n", name)
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_skin := &Skin{skin}
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if err := _skin.Write(output_path, name); err != nil {
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fmt.Fprintf(os.Stderr, "Error writing skin: %s\n", err)
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}
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}
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var skin_filter_player string // who to filter
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var skin_players = make(map[string]string)
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var skin_player_counts = make(map[string]int)
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var processed_skins = make(map[string]bool)
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func process_packet_skins(conn *minecraft.Conn, out_path string, pk packet.Packet) {
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switch _pk := pk.(type) {
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case *packet.PlayerSkin:
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name := skin_players[_pk.UUID.String()]
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if name == "" {
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name = _pk.UUID.String()
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}
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skin_player_counts[name]++
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name = fmt.Sprintf("%s_%d", name, skin_player_counts[name])
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write_skin(out_path, name, _pk.Skin)
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case *packet.PlayerList:
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if _pk.ActionType == 1 { // remove
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return
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}
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for _, player := range _pk.Entries {
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name := cleanup_name(player.Username)
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if name == "" {
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name = player.UUID.String()
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}
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if _, ok := processed_skins[name]; ok {
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continue
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}
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write_skin(out_path, name, player.Skin)
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skin_players[player.UUID.String()] = name
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processed_skins[name] = true
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if conn != nil {
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send_popup(conn, fmt.Sprintf("%s Skin was Saved", name))
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}
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}
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}
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}
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type SkinCMD struct {
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server_address string
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filter string
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}
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func (*SkinCMD) Name() string { return "skins" }
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func (*SkinCMD) Synopsis() string { return "download all skins from players on a server" }
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func (c *SkinCMD) SetFlags(f *flag.FlagSet) {
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f.StringVar(&c.server_address, "address", "", "remote server address")
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f.StringVar(&c.filter, "filter", "", "player name filter prefix")
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}
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func (c *SkinCMD) Usage() string {
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return c.Name() + ": " + c.Synopsis() + "\n"
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}
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func (c *SkinCMD) Execute(ctx context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
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address, hostname, err := server_input(c.server_address)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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return 1
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}
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serverConn, err := connect_server(ctx, address, nil)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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return 1
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}
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defer serverConn.Close()
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out_path := fmt.Sprintf("skins/%s", hostname)
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if err := serverConn.DoSpawnContext(ctx); err != nil {
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fmt.Fprint(os.Stderr, err)
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return 1
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}
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println("Connected")
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println("Press ctrl+c to exit")
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os.MkdirAll(out_path, 0755)
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for {
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pk, err := serverConn.ReadPacket()
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if err != nil {
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return 1
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}
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process_packet_skins(nil, out_path, pk)
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}
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}
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func init() {
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register_command(&SkinCMD{})
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}
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