+/*
+NNCP -- Node to Node copy, utilities for store-and-forward data exchange
+Copyright (C) 2016-2019 Sergey Matveev <stargrave@stargrave.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 3 of the License.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package nncp
+
+import (
+ "os"
+ "os/exec"
+ "time"
+)
+
+type PipeConn struct {
+ cmd *exec.Cmd
+ r *os.File
+ w *os.File
+}
+
+func NewPipeConn(command string) (ConnDeadlined, error) {
+ cmd := exec.Command("/bin/sh", "-c", command)
+ stdinR, stdinW, err := os.Pipe()
+ if err != nil {
+ return nil, err
+ }
+ cmd.Stdin = stdinR
+ stdoutR, stdoutW, err := os.Pipe()
+ if err != nil {
+ return nil, err
+ }
+ cmd.Stdout = stdoutW
+ err = cmd.Start()
+ if err != nil {
+ return nil, err
+ }
+ return &PipeConn{cmd, stdoutR, stdinW}, nil
+}
+
+func (c PipeConn) Read(p []byte) (n int, err error) {
+ return c.r.Read(p)
+}
+
+func (c PipeConn) Write(p []byte) (n int, err error) {
+ return c.w.Write(p)
+}
+
+func (c PipeConn) SetReadDeadline(t time.Time) error {
+ return c.r.SetReadDeadline(t)
+}
+
+func (c PipeConn) SetWriteDeadline(t time.Time) error {
+ return c.w.SetWriteDeadline(t)
+}
+
+func (c PipeConn) Close() (err error) {
+ err = c.w.Close()
+ go c.cmd.Wait()
+ time.AfterFunc(time.Duration(10*time.Second), func() { c.cmd.Process.Kill() })
+ return
+}