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package main
import (
"os"
"fmt"
"net"
"nslcd_proto"
sd "sd_daemon"
"sd_daemon/logger"
_ "inotify"
"syscall"
)
func get_socket() (socket net.Listener, err error) {
socket = nil
err = nil
fds := sd.ListenFds(true);
if (fds == nil) {
err = fmt.Errorf("failed to aquire sockets from systemd")
return
}
if (len(fds) != 1) {
err = fmt.Errorf("wrong number of sockets from systemd: expected %d but got %d", 1, len(fds))
return
}
socket, err = net.FileListener(fds[0])
fds[0].Close()
return
}
func getpeercred(conn *net.UnixConn) (cred *syscall.Ucred, err error) {
cred = nil
file, err := conn.File()
if err != nil {
return
}
defer file.Close()
cred, err = syscall.GetsockoptUcred(int(file.Fd()), syscall.SOL_SOCKET, syscall.SO_PEERCRED)
return
}
func handler(conn *net.UnixConn, backend nslcd_proto.Backend) {
cred, err := getpeercred(conn)
if err != nil {
logger.Debug("connection from unknown client")
} else {
logger.Debug("connection from pid=%v uid=%v gid=%v",
cred.Pid, cred.Uid, cred.Gid)
}
err = nslcd_proto.HandleRequest(backend, conn, conn, *cred)
if err != nil {
logger.Debug("Error while handling request: %v", err)
}
}
func main() {
var err error = nil
var socket net.Listener = nil
defer func() {
if socket != nil {
socket.Close()
}
}()
socket, err = get_socket()
if err != nil {
logger.Err("%s", err.Error())
sd.Notify(false, "STOPPING=1")
os.Exit(1)
}
sd.Notify(false, "READY=1")
for {
conn, err := socket.Accept()
if err != nil {
logger.Notice("%s", err.Error())
}
go handler(conn.(*net.UnixConn), nil)
}
sd.Notify(false, "STOPPING=1")
os.Exit(0)
}
// Initialize() error { func
// }
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