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restic/vendor/github.com/pkg/sftp/server_standalone/main.go

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2017-07-23 12:24:45 +00:00
package main
// small wrapper around sftp server that allows it to be used as a separate process subsystem call by the ssh server.
// in practice this will statically link; however this allows unit testing from the sftp client.
import (
"flag"
"fmt"
"io"
"io/ioutil"
"os"
"github.com/pkg/sftp"
)
func main() {
var (
readOnly bool
debugStderr bool
debugLevel string
options []sftp.ServerOption
)
flag.BoolVar(&readOnly, "R", false, "read-only server")
flag.BoolVar(&debugStderr, "e", false, "debug to stderr")
flag.StringVar(&debugLevel, "l", "none", "debug level (ignored)")
flag.Parse()
debugStream := ioutil.Discard
if debugStderr {
debugStream = os.Stderr
}
options = append(options, sftp.WithDebug(debugStream))
if readOnly {
options = append(options, sftp.ReadOnly())
}
svr, _ := sftp.NewServer(
struct {
io.Reader
io.WriteCloser
}{os.Stdin,
os.Stdout,
},
options...,
)
if err := svr.Serve(); err != nil {
fmt.Fprintf(debugStream, "sftp server completed with error: %v", err)
os.Exit(1)
}
}