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/* -*-mode:java; c-basic-offset:2; -*- */
import com.jcraft.jsch.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ScpFrom{
public static void main(String[] arg){
if(arg.length!=2){
System.err.println("usage: java ScpFrom user@remotehost:file1 file2");
System.exit(-1);
}
try{
String user=arg[0].substring(0, arg[0].indexOf('@'));
arg[0]=arg[0].substring(arg[0].indexOf('@')+1);
String host=arg[0].substring(0, arg[0].indexOf(':'));
String rfile=arg[0].substring(arg[0].indexOf(':')+1);
String lfile=arg[1];
String prefix=null;
if(new File(lfile).isDirectory()){
prefix=lfile+File.separator;
}
JSch jsch=new JSch();
Session session=jsch.getSession(user, host, 22);
// username and password will be given via UserInfo interface.
UserInfo ui=new MyUserInfo();
session.setUserInfo(ui);
session.connect();
// exec 'scp -f rfile' remotely
String command="scp -f "+rfile;
Channel channel=session.openChannel("exec");
((ChannelExec)channel).setCommand(command);
// get I/O streams for remote scp
OutputStream out=channel.getOutputStream();
InputStream in=channel.getInputStream();
channel.connect();
byte[] buf=new byte[1024];
// send '\0'
buf[0]=0; out.write(buf, 0, 1); out.flush();
while(true){
int c=checkAck(in);
if(c!='C'){
break;
}
// read '0644 '
in.read(buf, 0, 5);
int filesize=0;
while(true){
in.read(buf, 0, 1);
if(buf[0]==' ')break;
filesize=filesize*10+(buf[0]-'0');
}
String file=null;
for(int i=0;;i++){
in.read(buf, i, 1);
if(buf[i]==(byte)0x0a){
file=new String(buf, 0, i);
break;
}
}
//System.out.println("filesize="+filesize+", file="+file);
// send '\0'
buf[0]=0; out.write(buf, 0, 1); out.flush();
// read a content of lfile
FileOutputStream fos=new FileOutputStream(prefix==null ?
lfile :
prefix+file);
int foo;
while(true){
if(buf.length<filesize) foo=buf.length;
else foo=filesize;
in.read(buf, 0, foo);
fos.write(buf, 0, foo);
filesize-=foo;
if(filesize==0) break;
}
fos.close();
byte[] tmp=new byte[1];
if(checkAck(in)!=0){
System.exit(0);
}
// send '\0'
buf[0]=0; out.write(buf, 0, 1); out.flush();
}
System.exit(0);
}
catch(Exception e){
System.out.println(e);
}
}
static int checkAck(InputStream in) throws IOException{
int b=in.read();
// b may be 0 for success,
// 1 for error,
// 2 for fatal error,
// -1
if(b==0) return b;
if(b==-1) return b;
if(b==1 || b==2){
StringBuffer sb=new StringBuffer();
int c;
do {
c=in.read();
sb.append((char)c);
}
while(c!='\n');
if(b==1){ // error
System.out.print(sb.toString());
}
if(b==2){ // fatal error
System.out.print(sb.toString());
}
}
return b;
}
public static class MyUserInfo implements UserInfo{
public String getPassword(){ return passwd; }
public boolean promptYesNo(String str){
Object[] options={ "yes", "no" };
int foo=JOptionPane.showOptionDialog(null,
str,
"Warning",
JOptionPane.DEFAULT_OPTION,
JOptionPane.WARNING_MESSAGE,
null, options, options[0]);
return foo==0;
}
String passwd;
JTextField passwordField=(JTextField)new JPasswordField(20);
public String getPassphrase(){ return null; }
public boolean promptPassphrase(String message){ return true; }
public boolean promptPassword(String message){
Object[] ob={passwordField};
int result=
JOptionPane.showConfirmDialog(null, ob, message,
JOptionPane.OK_CANCEL_OPTION);
if(result==JOptionPane.OK_OPTION){
passwd=passwordField.getText();
return true;
}
else{ return false; }
}
public void showMessage(String message){
JOptionPane.showMessageDialog(null, message);
}
}
}
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