blob: 545911824a78b577ed1b6258a8eef0980f149473 [file] [log] [blame]
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// The ogleproxy connects to the target binary and serves an RPC
// interface to access and control it.
package main
import (
"flag"
"fmt"
"log"
"net/rpc"
"os"
"golang.org/x/debug/ogle/program/server"
)
var (
textFlag = flag.String("text", "", "file name of binary being debugged")
)
func main() {
log.SetFlags(0)
log.SetPrefix("ogleproxy: ")
flag.Parse()
if *textFlag == "" {
fmt.Printf("OGLE BAD\n")
flag.Usage()
os.Exit(2)
}
s, err := server.New(*textFlag)
if err != nil {
fmt.Printf("OGLE BAD\n%s\n", err)
os.Exit(2)
}
err = rpc.Register(s)
if err != nil {
fmt.Printf("OGLE BAD\n%s\n", err)
os.Exit(2)
}
fmt.Println("OGLE OK")
log.Print("start server")
// TODO: Usually done in a go.
rpc.ServeConn(&rwc{
os.Stdin,
os.Stdout,
})
log.Print("finish server")
}
// rwc creates a single io.ReadWriteCloser from a read side and a write side.
// It allows us to do RPC using standard in and standard out.
type rwc struct {
r *os.File
w *os.File
}
func (rwc *rwc) Read(p []byte) (int, error) {
return rwc.r.Read(p)
}
func (rwc *rwc) Write(p []byte) (int, error) {
return rwc.w.Write(p)
}
func (rwc *rwc) Close() error {
rerr := rwc.r.Close()
werr := rwc.w.Close()
if rerr != nil {
return rerr
}
return werr
}