mirror of
https://github.com/DNSCrypt/dnscrypt-proxy.git
synced 2024-12-11 22:35:40 +01:00
89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
// Copyright 2015 Daniel Theophanes.
|
|
// Use of this source code is governed by a zlib-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build linux darwin
|
|
|
|
package service
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log/syslog"
|
|
"os/exec"
|
|
)
|
|
|
|
func newSysLogger(name string, errs chan<- error) (Logger, error) {
|
|
w, err := syslog.New(syslog.LOG_INFO, name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return sysLogger{w, errs}, nil
|
|
}
|
|
|
|
type sysLogger struct {
|
|
*syslog.Writer
|
|
errs chan<- error
|
|
}
|
|
|
|
func (s sysLogger) send(err error) error {
|
|
if err != nil && s.errs != nil {
|
|
s.errs <- err
|
|
}
|
|
return err
|
|
}
|
|
|
|
func (s sysLogger) Error(v ...interface{}) error {
|
|
return s.send(s.Writer.Err(fmt.Sprint(v...)))
|
|
}
|
|
func (s sysLogger) Warning(v ...interface{}) error {
|
|
return s.send(s.Writer.Warning(fmt.Sprint(v...)))
|
|
}
|
|
func (s sysLogger) Info(v ...interface{}) error {
|
|
return s.send(s.Writer.Info(fmt.Sprint(v...)))
|
|
}
|
|
func (s sysLogger) Errorf(format string, a ...interface{}) error {
|
|
return s.send(s.Writer.Err(fmt.Sprintf(format, a...)))
|
|
}
|
|
func (s sysLogger) Warningf(format string, a ...interface{}) error {
|
|
return s.send(s.Writer.Warning(fmt.Sprintf(format, a...)))
|
|
}
|
|
func (s sysLogger) Infof(format string, a ...interface{}) error {
|
|
return s.send(s.Writer.Info(fmt.Sprintf(format, a...)))
|
|
}
|
|
|
|
func run(command string, arguments ...string) error {
|
|
cmd := exec.Command(command, arguments...)
|
|
|
|
// Connect pipe to read Stderr
|
|
stderr, err := cmd.StderrPipe()
|
|
|
|
if err != nil {
|
|
// Failed to connect pipe
|
|
return fmt.Errorf("%q failed to connect stderr pipe: %v", command, err)
|
|
}
|
|
|
|
// Do not use cmd.Run()
|
|
if err := cmd.Start(); err != nil {
|
|
// Problem while copying stdin, stdout, or stderr
|
|
return fmt.Errorf("%q failed: %v", command, err)
|
|
}
|
|
|
|
// Zero exit status
|
|
// Darwin: launchctl can fail with a zero exit status,
|
|
// so check for emtpy stderr
|
|
if command == "launchctl" {
|
|
slurp, _ := ioutil.ReadAll(stderr)
|
|
if len(slurp) > 0 {
|
|
return fmt.Errorf("%q failed with stderr: %s", command, slurp)
|
|
}
|
|
}
|
|
|
|
if err := cmd.Wait(); err != nil {
|
|
// Command didn't exit with a zero exit status.
|
|
return fmt.Errorf("%q failed: %v", command, err)
|
|
}
|
|
|
|
return nil
|
|
}
|