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import java.io.*;
import javax.security.auth.callback.*;
class Handler implements javax.security.auth.callback.CallbackHandler{
String authid;
String userid;
String password;
String realm;
public Handler()
{
}
public Handler(String authid, String userid, String password, String realm)
{
this.authid = authid;
this.userid = userid;
this.password = password;
this.realm = realm;
}
private String getinput(String prompt)
{
System.out.println(prompt);
System.out.print(">");
String result="";
try {
int c;
do {
c = System.in.read();
if (c!='\n')
result+=(char)c;
} while (c!='\n');
System.out.println("res = "+result);
} catch (IOException e) {
}
return result;
}
private void getauthid(NameCallback c)
{
if (authid!=null) {
c.setName(authid);
return;
}
/* authid = System.getProperty("user.name");
if (authid!=null) {
c.setName(authid);
return;
} */
c.setName( getinput(c.getPrompt()));
}
private void getpassword(PasswordCallback c)
{
if (password!=null) {
c.setPassword(password.toCharArray());
return;
}
c.setPassword( (getinput("Enter password")).toCharArray());
}
private void getrealm(RealmCallback c)
{
if (realm!=null) {
c.setRealm(realm);
return;
}
c.setRealm( getinput(c.getPrompt()) );
}
public void invokeCallback(Callback[] callbacks)
throws java.io.IOException, UnsupportedCallbackException
{
for (int lup=0;lup<callbacks.length;lup++)
{
Callback c = callbacks[lup];
if (c instanceof NameCallback) {
getauthid((NameCallback) c);
} else if (c instanceof PasswordCallback) {
getpassword((PasswordCallback) c);
} else if (c instanceof RealmCallback) {
getrealm((RealmCallback) c);
} else {
System.out.println("TODO!");
System.exit(1);
}
}
}
public void handle(Callback[] callbacks)
throws java.io.IOException, UnsupportedCallbackException
{
invokeCallback(callbacks);
}
}
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