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// SPDX-FileCopyrightText: © 2019 Grégoire Duchêne <gduchene@awhk.org>
// SPDX-License-Identifier: ISC
//go:build !aws
package main
import (
"context"
"flag"
"log"
"net"
"net/http"
"os"
"os/signal"
"time"
"golang.org/x/sys/unix"
"go.awhk.org/gosdd"
)
var (
addr = flag.String("addr", "localhost:8080", "address to listen on")
from = flag.String("from", "", "package prefix to remove")
to = flag.String("to", "", "repository prefix to add")
vcs = flag.String("vcs", "git", "version control system to signal")
)
func main() {
flag.Parse()
done := make(chan os.Signal, 1)
signal.Notify(done, os.Interrupt, unix.SIGTERM)
srv := http.Server{Handler: &redirector{*from, *to, *vcs}}
go func() {
ln, err := listenSD()
if err != nil {
log.Fatalln("listenSD:", err)
}
if ln == nil {
ln = listenFlag()
}
if err := srv.Serve(ln); err != nil && err != http.ErrServerClosed {
log.Fatalln("server.ListenAndServe:", err)
}
}()
<-done
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
if err := srv.Shutdown(ctx); err != nil && err != http.ErrServerClosed {
log.Fatalln("server.Shutdown:", err)
}
}
func listenFlag() net.Listener {
if (*addr)[0] != '/' {
ln, err := net.Listen("tcp", *addr)
if err != nil {
log.Fatalln("net.Listen:", err)
}
return ln
}
ln, err := net.Listen("unix", *addr)
if err != nil {
log.Fatalln("net.Listen:", err)
}
// We do not do any authorization anyway, so 0666 makes sense here.
if err = os.Chmod(*addr, 0666); err != nil {
log.Println("Failed to set permissions on UNIX socket:", err)
}
return ln
}
func listenSD() (net.Listener, error) {
fds, err := gosdd.SDListenFDs(true)
if err != nil {
if err == gosdd.ErrNoSDSupport {
return nil, nil
}
return nil, err
}
if len(fds) == 0 {
return nil, nil
}
return net.FileListener(fds[0])
}
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