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server.go
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server.go
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package management
import (
"log"
"net"
"strings"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
type Server struct {
handler ServerHandler
bindProtocol string
bindAddress string
password string
logger logrus.FieldLogger
listener net.Listener
stopSignal chan struct{}
stopError chan error
}
func NewServer(handler ServerHandler, bindProtocol, bindAddress, password string, logger logrus.FieldLogger) Server {
return Server{
handler: handler,
bindProtocol: bindProtocol,
bindAddress: bindAddress,
password: password,
logger: logger,
}
}
func (cs *Server) Start() error {
listener, err := net.Listen(cs.bindProtocol, cs.bindAddress)
if err != nil {
return errors.Wrap(err, "Binding")
}
cs.listener = listener
go cs.listen()
return nil
}
func (cs *Server) Stop() error {
err := cs.listener.Close()
return err
}
func (cs *Server) ManagementPassword() string {
return cs.password
}
func (cs *Server) ManagementConfigValue() string {
return strings.Join(strings.Split(cs.listener.Addr().String(), ":"), " ")
}
func (cs *Server) listen() {
conn, err := cs.listener.Accept()
if err != nil {
if opErr, ok := err.(*net.OpError); ok && opErr.Timeout() {
return
}
log.Println(err)
return
}
logger := cs.logger.WithFields(logrus.Fields{
"net.remote.address": conn.RemoteAddr().String(),
"net.remote.network": conn.RemoteAddr().Network(),
})
logger.Info("new openvpn management connection")
client := NewClient(conn, cs.handler, cs.password, logger)
defer func() {
err := client.Run()
if err != nil {
logger.Errorf("failed management client operation: %v", err)
}
}()
cs.Stop()
}