com.jcorporate.expresso.ext.taglib
Class RestrictAccessTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      com.jcorporate.expresso.ext.taglib.RestrictAccessTag

All Implemented Interfaces:

IterationTag, Serializable, Tag

public class RestrictAccessTag

extends TagSupport

Restrict Access Tag - To easily restrict JSP page access.

This class provides an easy way to restrict access to particular pages. Attributes: allowedUsers: A comma delimited list of user names that are allowed to access this page.

allowedGroups: A comma delimited list of groups that are allowed access to this page

If neither allowedUsers or allowedGroups is set, then anybody that's logged in, will be allowed to access the page.

Example Usage (Allows admin group to this page):

<%@ taglib uri="expresso.tld" prefix"expresso" %>

<expresso:RestrictAccess allowedGroups="admin" />

Author:

Michael Rimov

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

RestrictAccessTag()

Method Summary

protected void	denyAccess()
int	doEndTag() Standard doEndTag.
int	doStartTag() Do nothing until end tag.
void	setAllowedGroups(String groupList) Adds a comma delimited list of allowed groups to the allowedGroups Hashtable
void	setAllowedUsers(String userList) Adds a comma delimited list of allowed users to the allowedUsers Hashtable.
void	setDenyURL(String url) Sets a URL to forward to if access is denied

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RestrictAccessTag

public RestrictAccessTag()

Method Detail

setAllowedUsers

public void setAllowedUsers(String userList)

Adds a comma delimited list of allowed users to the allowedUsers Hashtable.

Parameters:

userList - the allowed users for this user

setAllowedGroups

public void setAllowedGroups(String groupList)

Adds a comma delimited list of allowed groups to the allowedGroups Hashtable

Parameters:

groupList - a comma delimited list of groups allowed to access this page

setDenyURL

public void setDenyURL(String url)

Sets a URL to forward to if access is denied

Parameters:

url - the URL to forward to if access to this page is denied

doEndTag

public int doEndTag()
             throws JspTagException

Standard doEndTag. This is the main processing. Will check to see if the current user matches the appropriate userlist of grouplist

Returns:

int

Throws:

JspTagException

doStartTag

public int doStartTag()
               throws JspTagException

Do nothing until end tag.

Returns:

int

Throws:

JspTagException - The exception description.

denyAccess

protected void denyAccess()
                   throws JspTagException

Throws:

JspTagException