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package com.sun.enterprise.security.auth.login;

import java.util.*;

import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;

import javax.security.auth.*;
import javax.security.auth.callback.*;
import javax.security.auth.login.*;
import javax.security.auth.spi.*;

import com.sun.enterprise.security.auth.realm.solaris.SolarisRealm;

// limit RI imports
import com.sun.enterprise.security.auth.Privilege;
import com.sun.enterprise.security.auth.PrivilegeImpl;

import com.sun.enterprise.security.auth.realm.Realm;
import com.sun.enterprise.security.auth.login.PasswordCredential;
import javax.security.auth.login.LoginException;

/**
 * Solaris realm login module.
 *
 * <P>Processing is delegated to the SolarisRealm class which accesses
 * the native methods.
 *
 * @see com.sun.enterprise.security.auth.login.PasswordLoginModule
 * @see com.sun.enterprise.security.auth.realm.solaris.SolarisRealm
 *
 */
public class SolarisLoginModule extends PasswordLoginModule
{

    /**
     * Perform solaris authentication. Delegates to SolarisRealm.
     *
     * @throws LoginException If login fails (JAAS login() behavior).
     *
     */
    protected void authenticate()
        throws LoginException
    {
        if (!(_currentRealm instanceof SolarisRealm)) {
            String msg = sm.getString("solarislm.badrealm");
            throw new LoginException(msg);
        }
        
        SolarisRealm solarisRealm = (SolarisRealm)_currentRealm;

        // A solaris user must have a name not null so check here.
        if ( (_username == null) || (_username.length() == 0) ) {
            String msg = sm.getString("solarislm.nulluser");
            throw new LoginException(msg);
        }
        
        String[] grpList = solarisRealm.authenticate(_username, _password);

        if (grpList == null) {  // JAAS behavior
            String msg = sm.getString("solarislm.loginfail", _username);
            throw new LoginException(msg);
        }

        if (_logger.isLoggable(Level.FINEST)) {
            _logger.finest("Solaris login succeeded for: " + _username);
        }

        //make a copy of groupList to pass to LoginModule. This copy is the one
        // that will be made null there. DO NOT PASS the grpList as is - as 
        // it will get overwritten. Resulting in logins passing only once.
        String[] groupListToForward = new String[grpList.length];
        for (int i = 0; i< grpList.length; i++){
            groupListToForward[i] = grpList[i];
        }

        commitAuthentication(_username, _password,
                             _currentRealm, groupListToForward);
    }

}