/**
* Get the username and password. This method does not return any value. Instead, it sets global
* name and password variables.
*
* <p>Also note that this method will set the username and password values in the shared state in
* case subsequent LoginModules want to use them via use/tryFirstPass.
*
* @param getPasswdFromSharedState boolean that tells this method whether to retrieve the password
* from the sharedState.
* @exception LoginException if the username/password cannot be acquired.
*/
private void getUsernamePassword(boolean getPasswdFromSharedState) throws LoginException {
if (getPasswdFromSharedState) {
// use the password saved by the first module in the stack
username = (String) sharedState.get(USERNAME_KEY);
password = (char[]) sharedState.get(PASSWORD_KEY);
return;
}
// prompt for a username and password
if (callbackHandler == null)
throw new LoginException(
"No CallbackHandler available " + "to acquire authentication information from the user");
Callback[] callbacks = new Callback[2];
callbacks[0] = new NameCallback(rb.getString("username: "******"password: "******"Error: "
+ uce.getCallback().toString()
+ " not available to acquire authentication information"
+ " from the user");
}
}
/**
* Authenticate the user (first phase).
*
* <p>The implementation of this method attempts to retrieve the user's Unix {@code Subject}
* information by making a native Unix system call.
*
* @exception FailedLoginException if attempts to retrieve the underlying system information fail.
* @return true in all cases (this {@code LoginModule} should not be ignored).
*/
public boolean login() throws LoginException {
long[] unixGroups = null;
try {
ss = new UnixSystem();
} catch (UnsatisfiedLinkError ule) {
succeeded = false;
throw new FailedLoginException(
"Failed in attempt to import "
+ "the underlying system identity information"
+ " on "
+ System.getProperty("os.name"));
}
userPrincipal = new UnixPrincipal(ss.getUsername());
UIDPrincipal = new UnixNumericUserPrincipal(ss.getUid());
GIDPrincipal = new UnixNumericGroupPrincipal(ss.getGid(), true);
if (ss.getGroups() != null && ss.getGroups().length > 0) {
unixGroups = ss.getGroups();
for (int i = 0; i < unixGroups.length; i++) {
UnixNumericGroupPrincipal ngp = new UnixNumericGroupPrincipal(unixGroups[i], false);
if (!ngp.getName().equals(GIDPrincipal.getName())) supplementaryGroups.add(ngp);
}
}
if (debug) {
System.out.println("\t\t[UnixLoginModule]: " + "succeeded importing info: ");
System.out.println("\t\t\tuid = " + ss.getUid());
System.out.println("\t\t\tgid = " + ss.getGid());
unixGroups = ss.getGroups();
for (int i = 0; i < unixGroups.length; i++) {
System.out.println("\t\t\tsupp gid = " + unixGroups[i]);
}
}
succeeded = true;
return true;
}
