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NIHVIVO-1207 Make LoginProcessBean more encapsulated.

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This commit is contained in:
jeb228 2010-11-05 15:26:22 +00:00
parent c6ff668647
commit dcb358d4c8
5 changed files with 103 additions and 63 deletions
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30
webapp/src/edu/cornell/mannlib/vitro/webapp/controller/edit/Authenticate.java
View file

@ -130,7 +130,7 @@ public class Authenticate extends FreemarkerHttpServlet {
String username = request.getParameter(PARAMETER_USERNAME);
String password = request.getParameter(PARAMETER_PASSWORD);
LoginProcessBean bean = getLoginProcessBean(request);
LoginProcessBean bean = LoginProcessBean.getBean(request);
bean.clearMessage();
log.trace("username=" + username + ", password=" + password + ", bean="
+ bean);
@ -170,7 +170,7 @@ public class Authenticate extends FreemarkerHttpServlet {
private void whatNextForThisGuy(HttpServletRequest request, User user) {
if (user.getLoginCount() == 0) {
log.debug("Forcing first-time password change");
LoginProcessBean bean = getLoginProcessBean(request);
LoginProcessBean bean = LoginProcessBean.getBean(request);
bean.setState(State.FORCED_PASSWORD_CHANGE);
} else {
recordLoginInfo(request, user.getUsername());
@ -191,7 +191,7 @@ public class Authenticate extends FreemarkerHttpServlet {
* If they want to cancel the login, let them.
*/
private void recordLoginCancelled(HttpServletRequest request) {
getLoginProcessBean(request).setState(State.CANCELLED);
LoginProcessBean.getBean(request).setState(State.CANCELLED);
}
/**
@ -200,7 +200,7 @@ public class Authenticate extends FreemarkerHttpServlet {
private User checkChangeProgress(HttpServletRequest request) {
String newPassword = request.getParameter(PARAMETER_NEW_PASSWORD);
String confirm = request.getParameter(PARAMETER_CONFIRM_PASSWORD);
LoginProcessBean bean = getLoginProcessBean(request);
LoginProcessBean bean = LoginProcessBean.getBean(request);
bean.clearMessage();
log.trace("newPassword=" + newPassword + ", confirm=" + confirm
+ ", bean=" + bean);
@ -261,8 +261,7 @@ public class Authenticate extends FreemarkerHttpServlet {
getAuthenticator(request).setLoggedIn(user);
// Remove the login process info from the session.
request.getSession()
.removeAttribute(LoginProcessBean.SESSION_ATTRIBUTE);
LoginProcessBean.removeBean(request);
}
/**
@ -280,10 +279,8 @@ public class Authenticate extends FreemarkerHttpServlet {
*/
private void redirectCancellingUser(HttpServletRequest request,
HttpServletResponse response) throws IOException {
request.getSession()
.removeAttribute(LoginProcessBean.SESSION_ATTRIBUTE);
log.debug("User cancelled the login. Redirect to site admin page.");
LoginProcessBean.removeBean(request);
response.sendRedirect(getHomeUrl(request));
}
@ -384,15 +381,15 @@ public class Authenticate extends FreemarkerHttpServlet {
return State.LOGGED_IN;
}
if (session.getAttribute(LoginProcessBean.SESSION_ATTRIBUTE) == null) {
if (LoginProcessBean.isBean(request)) {
State state = LoginProcessBean.getBean(request).getState();
log.debug("state from LoginProcessBean is " + state);
return state;
} else {
log.debug("no LoginSessionBean, no LoginProcessBean: "
+ "current state is NOWHERE");
return State.NOWHERE;
}
State state = getLoginProcessBean(request).getState();
log.debug("state from LoginProcessBean is " + state);
return state;
}
/**
@ -432,11 +429,6 @@ public class Authenticate extends FreemarkerHttpServlet {
return request.getContextPath();
}
/** Where do we stand in the login process? */
private LoginProcessBean getLoginProcessBean(HttpServletRequest request) {
return LoginProcessBean.getBeanFromSession(request);
}
// ----------------------------------------------------------------------
// Public utility methods.
// ----------------------------------------------------------------------

2
webapp/src/edu/cornell/mannlib/vitro/webapp/controller/edit/Login.java
View file

@ -53,7 +53,7 @@ public class Login extends HttpServlet {
* Otherwise, set up as if they had filled in the login form, and send
* them to authenticate it.
*/
LoginProcessBean bean = LoginProcessBean.getBeanFromSession(request);
LoginProcessBean bean = LoginProcessBean.getBean(request);
bean.setState(LoginProcessBean.State.LOGGING_IN);
request.getRequestDispatcher(Controllers.AUTHENTICATE).forward(request,
response);

84
webapp/src/edu/cornell/mannlib/vitro/webapp/controller/login/LoginProcessBean.java
View file

@ -8,31 +8,91 @@ import java.util.Arrays;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Where are we in the process of logging on? What message should we show to the
* user?
*/
public class LoginProcessBean {
private static final Log log = LogFactory.getLog(LoginProcessBean.class);
private static Object[] NO_ARGUMENTS = new Object[0];
public static final String SESSION_ATTRIBUTE = LoginProcessBean.class
private static final String SESSION_ATTRIBUTE = LoginProcessBean.class
.getName();
// ----------------------------------------------------------------------
// static methods
// ----------------------------------------------------------------------
/**
* Get the login process bean from the session. If there is none, create
* Is there currently a login process bean in the session?
*/
public static boolean isBean(HttpServletRequest request) {
return (null != getBeanFromSession(request));
}
/**
* Get the login process bean from the session. If there is no bean, create
* one.
*/
public static LoginProcessBean getBeanFromSession(HttpServletRequest request) {
HttpSession session = request.getSession();
LoginProcessBean bean = (LoginProcessBean) session
.getAttribute(SESSION_ATTRIBUTE);
if (bean == null) {
bean = new LoginProcessBean();
session.setAttribute(SESSION_ATTRIBUTE, bean);
public static LoginProcessBean getBean(HttpServletRequest request) {
if (isBean(request)) {
return getBeanFromSession(request);
} else {
setBean(request, new LoginProcessBean());
return getBeanFromSession(request);
}
return bean;
}
/**
* Store this login process bean in the session.
*/
public static void setBean(HttpServletRequest request, LoginProcessBean bean) {
HttpSession session = request.getSession();
session.setAttribute(SESSION_ATTRIBUTE, bean);
}
/**
* Remove the login process bean from the session. If there is no bean, do
* nothing.
*/
public static void removeBean(HttpServletRequest request) {
if (isBean(request)) {
request.getSession().removeAttribute(SESSION_ATTRIBUTE);
}
}
/**
* Get the bean from the session, or null if there is no bean.
*/
private static LoginProcessBean getBeanFromSession(
HttpServletRequest request) {
HttpSession session = request.getSession(false);
if (session == null) {
return null;
}
Object bean = session.getAttribute(SESSION_ATTRIBUTE);
if (bean == null) {
return null;
}
if (!(bean instanceof LoginProcessBean)) {
log.warn("Tried to get login process bean, but found an instance of "
+ bean.getClass().getName() + ": " + bean);
return null;
}
return (LoginProcessBean) bean;
}
// ----------------------------------------------------------------------
// helper classes
// ----------------------------------------------------------------------
public enum State {
NOWHERE, LOGGING_IN, FORCED_PASSWORD_CHANGE, CANCELLED, LOGGED_IN
}
@ -89,6 +149,10 @@ public class LoginProcessBean {
}
}
// ----------------------------------------------------------------------
// the bean
// ----------------------------------------------------------------------
/** Where are we in the process? */
private State currentState = State.NOWHERE;

24
webapp/src/edu/cornell/mannlib/vitro/webapp/controller/login/LoginTemplateHelper.java
View file

@ -7,7 +7,6 @@ import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@ -101,7 +100,7 @@ public class LoginTemplateHelper extends LoginTemplateHelperBase {
*/
private TemplateResponseValues showLoginScreen(VitroRequest vreq)
throws IOException {
LoginProcessBean bean = getLoginProcessBean(vreq);
LoginProcessBean bean = LoginProcessBean.getBean(vreq);
bean.setState(State.LOGGING_IN);
log.trace("Going to login screen: " + bean);
@ -126,7 +125,7 @@ public class LoginTemplateHelper extends LoginTemplateHelperBase {
* change it (unless they cancel out).
*/
private TemplateResponseValues showPasswordChangeScreen(VitroRequest vreq) {
LoginProcessBean bean = getLoginProcessBean(vreq);
LoginProcessBean bean = LoginProcessBean.getBean(vreq);
bean.setState(State.FORCED_PASSWORD_CHANGE);
log.trace("Going to password change screen: " + bean);
@ -173,27 +172,10 @@ public class LoginTemplateHelper extends LoginTemplateHelperBase {
if (LoginStatusBean.getBean(request).isLoggedIn()) {
return State.LOGGED_IN;
} else {
return getLoginProcessBean(request).getState();
return LoginProcessBean.getBean(request).getState();
}
}
/**
* How is the login process coming along?
*/
private LoginProcessBean getLoginProcessBean(HttpServletRequest request) {
HttpSession session = request.getSession();
LoginProcessBean bean = (LoginProcessBean) session
.getAttribute(LoginProcessBean.SESSION_ATTRIBUTE);
if (bean == null) {
bean = new LoginProcessBean();
session.setAttribute(LoginProcessBean.SESSION_ATTRIBUTE, bean);
}
return bean;
}
/** What's the URL for this servlet? */
private String getAuthenticateUrl(HttpServletRequest request) {
String contextPath = request.getContextPath();