chore(deps): internalize deleted dependency

github.com/sabban/bastion no longer exists

The code has been replaced by https://github.com/moul/bastion/blob/master/pkg/logchannel/logchannel.go

pkg/bastion/session.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/gliderlabs/ssh"
 	"github.com/pkg/errors"
-	"github.com/sabban/bastion/pkg/logchannel"
+	"moul.io/sshportal/pkg/utils"
 	gossh "golang.org/x/crypto/ssh"
 )
 

pkg/utils/logchannel.go

@@ -0,0 +1,54 @@
+package utils
+
+import (
+	"encoding/binary"
+	"io"
+	"syscall"
+	"time"
+
+	"golang.org/x/crypto/ssh"
+)
+
+type logChannel struct {
+	channel ssh.Channel
+	writer  io.WriteCloser
+}
+
+func writeTTYRecHeader(fd io.Writer, length int) {
+	t := time.Now()
+
+	tv := syscall.NsecToTimeval(t.UnixNano())
+
+	binary.Write(fd, binary.LittleEndian, int32(tv.Sec))
+	binary.Write(fd, binary.LittleEndian, int32(tv.Usec))
+	binary.Write(fd, binary.LittleEndian, int32(length))
+}
+
+func New(channel ssh.Channel, writer io.WriteCloser) *logChannel {
+	return &logChannel{
+		channel: channel,
+		writer:  writer,
+	}
+}
+
+func (l *logChannel) Read(data []byte) (int, error) {
+	return l.Read(data)
+}
+
+func (l *logChannel) Write(data []byte) (int, error) {
+	writeTTYRecHeader(l.writer, len(data))
+	l.writer.Write(data)
+
+	return l.channel.Write(data)
+}
+
+func (l *logChannel) LogWrite(data []byte) (int, error) {
+	writeTTYRecHeader(l.writer, len(data))
+	return l.writer.Write(data)
+}
+
+func (l *logChannel) Close() error {
+	l.writer.Close()
+
+	return l.channel.Close()
+}