Appboard/2.4/builder/system administration/login page/custom: Difference between revisions

imported>Jason.nicholls
imported>Jason.nicholls
 
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* making the Domain field a drop-down
* making the Domain field a drop-down


== Required Fields and Submission ==
The following fields are required to log into AppBoard:
* '''login''': set to ''yes''. Typically this is a hidden field
* '''userid''': This would be a visible field to allow a user to enter their user name.
* '''password''': This would be a visible password field to allow a user to enter their password.
* '''domainSelect''': Another text input to allow a user to enter their domain.
The form is then <tt>POST</tt>ed to: <tt>/enportal/servlet/pd</tt>. Using <tt>GET</tt> is also possible but not recommended as all all requests are logged and get requests include all parameters, which means user passwords would also get logged.


== Included Login Pages ==
== Included Login Pages ==
Line 93: Line 104:


== Examples ==
== Examples ==
=== Custom Logo ===
The most common minimum change to the shipped login pages is to simply change the Edge logo:
# First make a new copy of an existing login page to start modifying.
# All shipped login pages use a logo in the following location: <tt>images/logo.png</tt>.
# Create a new logo. The simplest way to go is to view the default logo to check the dimensions, and create a new image with the same dimensions with your new logo.
# Replace the logo.png with your new logo.
# Set the system login page to use your new login page.


=== Minimal Login Page ===
=== Minimal Login Page ===
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       <table>
       <table>
         <tr><td>User Name:</td> <td><input type="text" name="userid" size="28" maxlength="80"></td></tr>
         <tr><td>User Name:</td> <td><input type="text" name="userid" size="28" maxlength="80"></td></tr>
         <tr><td>Password:</td> <td><input type="text" name="password" size="28" maxlength="80"></td></tr>
         <tr><td>Password:</td> <td><input type="password" name="password" size="28" maxlength="80"></td></tr>
         <tr><td>Domain:</td> <td> <input type="text" name="domainSelect" size="28" maxlength="80"></td></tr>
         <tr><td>Domain:</td> <td> <input type="text" name="domainSelect" size="28" maxlength="80"></td></tr>
         <tr><td colspan="2" align="center"> <input type="submit" value=”login”></td></tr>
         <tr><td colspan="2" align="center"> <input type="submit" value=”login”></td></tr>
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</code>
</code>


=== Login Page Elements ===
=== Setting a Default Domain ===
All Login Pages must contain certain elements. This section describes the necessary and optional elements of Login Pages for custom Login Page authors. The following table outlines the Login Page elements:
 
{|class="wikitable" border="1" style="background-color:#eeeeee;"
!Login Element
!Class
!Description
|-
|Login Form
|Required
|HTML Login form which provides entry into the enPortal system.
|-
|Browser Type Checking
|Optional
|Servlet/Javascript to determine minimum browser requirements.
|-
|Auto-Fill UserID and Domain
|Optional
|Functions to pre-fill the user and domain fields of the login form with most recent values.
|-
|Error Message
|Optional
|JSP/Javascript functions to read and display any error messages returned from Login process.
|}
 
 
=== Login Form ===
The login page must contain an HTML form with the parameters described in the following table:
 
{|class="wikitable" border="1" style="background-color:#eeeeee;"
!Parameter
!Value
|-
|Form method
|POST
|-
|Form action
|/enportal/servlet/pd (assuming this is on the same HTTP server, otherwise the full URL of the enPortal server plus this path must be listed as the action)
|-
|Hidden input
|<input name="login" type="hidden" value="yes">
|-
|UserID field
|name=”userid”
|-
|Password field
|name="password"
|-
|Domain field
|name=”domainSelect”
|}
 
 
 
 
 
 
=== Hard-coding a Default Domain ===
AppBoard/enPortal requires three elements for a User to successfully log in to the system: Username, Password, and Domain.  In some cases, all of the Users may be in a single Domain, and it may be a nuisance for the User to have to enter the Domain in order to log in.  In this case, you can pre-fill a Domain name in the login form, or even hide the field completely and just have the Login Page auto-submit the hard-coded value for everyone who submits a login request.
 
 
Perform the following steps to hard-code a value in the Domain field in the login form:
# Open the Login Page jsp file for editing in a text editor.
# Search for the following text in the login page:
#* <tt><input type="text" id="domain" value="<%=domain%>" name="domainSelect"</tt>
# Change "value=" to a hard-coded value.
#* Example: <tt><input type="text" id="domain" value="CustomerName" name="domainSelect"</tt>
 
 
The above will force the default Domain to be “CustomerName” instead of whatever domain was last accessed (<%=domain%>).  To hide the field completely from view, change the input type from "text" to "hidden".  You will want to hide the "Domain" label for the field also.
 
 
== Implementing a Custom Login Page ==


Once you have created a custom Login Page, implement the new Login Page by completing the following:
For implementations with a single Domain for all users the Domain field may add confusion so can be set to a particular value and even hidden.
# Place the Login Page in the appropriate location on the server.
#* <tt>[INSTALL_HOME]/webapps/enportal/login_pages/custom/[<i>loginpagename</i>].jsp</tt>
# Assign the Login Page to the system or individual Domain(s).
#* To assign to the entire system:
#** Log in to enPortal/Appboard as the administrator.
#** Go to the enPortal admin URL: <tt>http://<<i>hostname</i>>:<<i>port</i>>/enportal/home#</tt>.
#** Mouse over "Advanced" and select "Explore System".
#** Right-click "Explorer" and select "System Login Page".
#** Enter the relative path/name of the Login Page to use.
#*** Example: <tt>custom/myloginpage.jsp</tt>
#* To specifying a default Login Page for a Domain:
#** Select the Domain for which you would like to specify a default Login Page.
#** Log in to enPortal/Appboard as the administrator.
#** Go to the enPortal admin URL: <tt>http://<<i>hostname</i>>:<<i>port</i>>/enportal/home#</tt>.
#** Click the "Users" tab.
#** Right-click the Domain name and select "Edit".
#** Under "Default Login Page", enter the relative path/name of the Login Page to use.
#*** Example: <tt>custom/myloginpage.jsp</tt>
#** Click "Save".


# First make a new copy of an existing login page to start modifying.
# Edit <tt>login.jsp</tt>
## find the line line with: <tt><input type="text" id="domain" ...</tt>
## modify the <tt>value</tt> from a JSP variable to the desired value, such as:
##: <tt><input type="text" id="domain" value="'''myDomain'''" ...</tt>
# Set the system login page to use your new login page.


{{Note|If a Login Page is assigned to a Domain, a User in that Domain will need to log in and log out once to that Domain to set the cookie that will provide that custom Login Page the next time that User logs in.}}
In addition, if this field should be completely hidden then change the <tt>type</tt> attribute from <tt>text</tt> to <tt>hidden</tt>. In this case though some additional HTML and/or CSS changes may be necessary to improve the aesthetic of the form.

Latest revision as of 10:24, 17 July 2014

Overview

This document provides some examples of modifying and producing completely custom login pages for AppBoard. For more general information about login pages and how to configure the system login page, refer to the Login Page documentation.

By default the different login page styles shipped with AppBoard are simple HTML forms that allow the user to enter the required information, and then POST it to the server so the server can authenticate and establish a session.

Typical customizations are:

  • simply changing the logo graphic
  • various styling changes (colours, fonts, etc...)
  • addition of notices or terms & conditions
  • hiding the Domain field for single-domain implementations
  • making the Domain field a drop-down


Required Fields and Submission

The following fields are required to log into AppBoard:

  • login: set to yes. Typically this is a hidden field
  • userid: This would be a visible field to allow a user to enter their user name.
  • password: This would be a visible password field to allow a user to enter their password.
  • domainSelect: Another text input to allow a user to enter their domain.

The form is then POSTed to: /enportal/servlet/pd. Using GET is also possible but not recommended as all all requests are logged and get requests include all parameters, which means user passwords would also get logged.

Included Login Pages

The login pages shipped with AppBoard all follow the same structure. A main login.jsp Java Server Page which performs browser version checking, auto-fills previous values, handles error responses, presents a HTML form for the user to complete. Along with the JSP there will be other supporting images and CSS resources.


Browser Type Checking

If a client does not meed the minimum browser requirements the login page will redirect the client to /enportal/enPortalInvalidBrowser.jsp.

This works in three parts with the default login pages. The first is to load the Edge JspConfigBean:

<jsp:useBean id="JspConfigBean" scope="application" class="com.edgetech.util.config.JspConfig">
<% config.getServletContext().setAttribute("JspConfigBean", JspConfigBean); %>
</jsp:useBean>

Then the default minimum versions are retrieved by the JSP:

// get minimum versions from the Portal server
float minIEVersion = JspConfigBean.getMinIEVersion();
float minNetscapeVersion = JspConfigBean.getMinNetscapeVersion();
float minChromeVersion = JspConfigBean.getMinChromeVersion();

And finally a check is performed to determine whether to redirect:

if ( ! ((isChrome && version < <%=minChromeVersion%>) || (isNav && version < <%=minNetscapeVersion%>) || (isIE && version < <%=minIEVersion%>)) ) {
...
} else {
    // The user is trying to use an unsupported version of IE or netscape.
    rootWindow.location.replace("<%=JSPUtilities.out(URLUtil.getPortalContext(), true)%>/enPortalInvalidBrowser.jsp");
}

Depending on the deployment it may be useful to remove this check, or make this check more explicit due to standard operating environment and/or applications used within the organization.


Auto-fill User Name and Domain Fields

Template-note.png
Modern browsers often will auto-fill forms on behalf of the user already making this section redundant. Also realize that even if the JSP auto-fill code is disabled the browser may still auto-fill forms. In the case of the browser auto-filling form fields it is necessary to modify the form inputs and specify the autocomplete="off" attribute.

If a user has previously logged into AppBoard then it's possible for the server to retrieve the users User Name and Domain last used via cookies stored in the browser. This is implemented in the default JSP pages by first loading some utilities:

<%@ page import="com.edgetech.eportal.util.*" %>
<%@ page import="com.edgetech.eportal.dispatch.DispatchUtilities" %>
<%@ page import="com.edgetech.eportal.web.JSPUtilities" %>

Then doing some lookups and setting default values for the user and domain:

// Lookup the UserID/Domain values from the cookie to pre-fill the login form
String user = DispatchUtilities.getRequestAccessor().getUserName(request);
String domain = DispatchUtilities.getRequestAccessor().getDomainName(request);
if ( (domain == null) || domain.equals("null") ) {
    domain = "";
}
if ( (user == null) || user.equals("null") ) {
    user = "";
}
user = JSPUtilities.toHTMLString(user);
domain = JSPUtilities.toHTMLString(domain);

Handling Errors

In the event of an un-successful login attempt it should be indicated to the user. The JSP handles this by checking for error conditions on loading:

String error_Text = request.getParameter("error");
if (error_Text == null)
{
    error_Text = (String) request.getAttribute("error");
}
if (error_Text == null)
{
    error_Text = "";
}

Once the page loads there is a javascript call made to error_checks. This actually performs a number of checks including the minimum browser checks. If anything is in error then setErrorState is called to modify the style of the page to indicate an error condition.


Examples

The most common minimum change to the shipped login pages is to simply change the Edge logo:

  1. First make a new copy of an existing login page to start modifying.
  2. All shipped login pages use a logo in the following location: images/logo.png.
  3. Create a new logo. The simplest way to go is to view the default logo to check the dimensions, and create a new image with the same dimensions with your new logo.
  4. Replace the logo.png with your new logo.
  5. Set the system login page to use your new login page.


Minimal Login Page

The most basic login page is a HTML form without using JSP, javascript, or images and styling. Of course this doesn't handle error checking or browser detection etc... but serves as an example of the minimum needed to write a completely custom login page:

[html,N]

<html>
  <head>
    <title>Minimal Login Page</title>
  </head>
  <body>

Minimal Login Page

    <form name="loginForm" method=post action="/enportal/servlet/pd">
      <input name="login" type="hidden" value="yes">
User Name: <input type="text" name="userid" size="28" maxlength="80">
Password: <input type="password" name="password" size="28" maxlength="80">
Domain: <input type="text" name="domainSelect" size="28" maxlength="80">
<input type="submit" value=”login”>
    </form>
  </body>
</html>

Setting a Default Domain

For implementations with a single Domain for all users the Domain field may add confusion so can be set to a particular value and even hidden.

  1. First make a new copy of an existing login page to start modifying.
  2. Edit login.jsp
    1. find the line line with: <input type="text" id="domain" ...
    2. modify the value from a JSP variable to the desired value, such as:
      <input type="text" id="domain" value="myDomain" ...
  3. Set the system login page to use your new login page.

In addition, if this field should be completely hidden then change the type attribute from text to hidden. In this case though some additional HTML and/or CSS changes may be necessary to improve the aesthetic of the form.