118 lines
1.9 KiB
Go
118 lines
1.9 KiB
Go
package server
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import (
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"encoding/json"
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"errors"
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"fmt"
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"log"
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"net"
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"os"
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"os/exec"
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"os/signal"
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"path/filepath"
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"syscall"
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"github.com/adrg/xdg"
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)
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var (
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Socket = filepath.Join(xdg.RuntimeDir, "xfts")
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Thumbnails = filepath.Join(xdg.CacheHome, "thumbnails")
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)
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type Request struct {
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Source string `json:"src"`
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Destination string `json:"dst"`
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}
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func Serve() error {
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listener, err := net.Listen("unix", Socket)
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if err != nil {
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return err
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}
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defer listener.Close()
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log.Printf("Listening on %s", Socket)
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt, syscall.SIGTERM)
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go func() {
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<-c
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listener.Close()
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}()
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for {
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conn, err := listener.Accept()
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if err != nil {
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if errors.Is(err, net.ErrClosed) {
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break
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}
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log.Printf("connection: %s", err)
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continue
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}
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go func() {
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defer conn.Close()
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if err := handle(conn); err != nil {
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_, err := conn.Write([]byte(err.Error()))
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if err != nil {
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log.Println(err)
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}
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}
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}()
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}
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return errors.New("interrupted")
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}
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func handle(conn net.Conn) error {
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var req Request
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if err := json.NewDecoder(conn).Decode(&req); err != nil {
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return err
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}
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var cmd *exec.Cmd
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ext := filepath.Ext(req.Source)
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if ext == "" {
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return nil
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}
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switch ext {
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case ".png", ".jpg", ".jpeg", ".jpe", ".JPG",
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".gif", ".xpm", ".xbm", ".ppm", ".mp4", ".3gp",
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".svg", ".webp":
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cmd = exec.Command("convert",
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req.Source+"[0]",
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"-background", "#171717",
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"-flatten",
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"-define", "filename:literal=true",
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"-format", "ppm",
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"-auto-orient",
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"-thumbnail", "64x64",
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req.Destination,
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)
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}
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if cmd == nil {
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return fmt.Errorf("unhandled type: %s", ext)
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}
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log.Println(cmd)
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if err := os.MkdirAll(filepath.Base(req.Destination), 0o755); err != nil {
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os.Remove(req.Destination)
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return err
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}
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if err := cmd.Run(); err != nil {
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os.Remove(req.Destination)
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return err
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}
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return nil
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}
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