setusernameaction.java

这是linux下ssl vpn的实现程序

package com.sslexplorer.security.actions;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.Globals;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.sslexplorer.core.CoreServlet;
import com.sslexplorer.core.CoreUtil;
import com.sslexplorer.core.actions.DefaultAction;
import com.sslexplorer.security.LogonStateMachine;
import com.sslexplorer.security.SessionInfo;
import com.sslexplorer.security.User;
import com.sslexplorer.security.forms.LogonForm;

public class SetUsernameAction extends DefaultAction {

    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
                    throws Exception {
        LogonForm logonForm = (LogonForm) form;

        logonForm.setReferer(CoreUtil.getReferer(request));

        LogonStateMachine logonStateMachine = (LogonStateMachine) request.getSession().getAttribute(
                        LogonStateMachine.LOGON_STATE_MACHINE);

        if(logonStateMachine==null) {
        	logonStateMachine = new LogonStateMachine();
            request.getSession().setAttribute(LogonStateMachine.LOGON_STATE_MACHINE, logonStateMachine);        	
        }
        
        if (logonStateMachine.getState() == LogonStateMachine.STATE_DISPLAY_USERNAME) {
            return logonStateMachine.nextStateActionForward(mapping, logonForm.getUsername());
        }

        if (logonStateMachine.getState() == LogonStateMachine.STATE_RETURN_TO_LOGON) {
            logonStateMachine.setState(LogonStateMachine.STATE_DISPLAY_USERNAME);
            logonForm.reset(mapping, request);
            logonForm.setUsername("");
            return logonStateMachine.nextStateActionForward(mapping, logonForm.getUsername());
        }

        User user;
        try {
            if(logonForm.getUsername()==null || logonForm.getUsername().equals("")) {
                ActionMessages errors = new ActionMessages();
                errors.add(Globals.ERROR_KEY, new ActionMessage("createAccount.error.noUsername"));
                saveErrors(request, errors);
                return mapping.findForward("display");
            }
            user = CoreServlet.getServlet().getUserDatabase().getAccount(logonForm.getUsername());
            return logonStateMachine.getSpecificSignOnForward(mapping, user, false);
        } catch (Exception e) {
            logonStateMachine.setState(LogonStateMachine.STATE_UNKNOWN_USERNAME);
            return logonStateMachine.nextStateActionForward(mapping, logonForm.getUsername());
        }

    }

    public int getNavigationContext(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) {
        return SessionInfo.ALL_CONTEXTS;
    }
}