Can some one explain this code
/**
*
* Service Portal sample script include to indicate
* 1. which login page should be used
* 2. the starting page after the user is authenticated
*
* Script is configured using system properties
* PROPERTY VALUE
* glide.entry.page.script new SPEntryPage().getLoginURL();
* glide.entry.first.page.script new SPEntryPage().getFirstPageURL();
*
* functions can return a path or null if no overrides are necessary
*
**/
var SPEntryPage = Class.create();
SPEntryPage.prototype = {
initialize: function() {
this.logVariables = false; // for debugging
this.portal = "/DCC/"; // The URL suffix specified in the sp_portal record
},
/***
*
* Referred to by property: glide.entry.page.script
*
**/
getLoginURL: function() {
// When requesting a page directly (eg: /problem_list.do)
// The platform session_timeout.do sets the login page to welcome.do
// Since we are handling the login, clear that value
var session = gs.getSession();
var nt = session.getProperty("nav_to");
var sPage = session.getProperty("starting_page");
if (nt == "welcome.do")
session.clearProperty("nav_to");
if (!sPage && !nt)
session.putProperty("starting_page", gs.getProperty("glide.login.home"));
// Send the user to the portal's login page
var portalGR = new GlideRecord("sp_portal");
portalGR.addQuery("url_suffix", this.portal.replace(/\//g, ""));
portalGR.addNotNullQuery("login_page");
portalGR.query();
if (portalGR.next())
return this.portal + "?id=" + portalGR.login_page.id;
// Send to the a default login page
return this.portal + "?id=login";
},
/***
*
* Referred to by property: glide.entry.first.page.script
*
**/
getFirstPageURL: function() {
var session = gs.getSession();
this.logProperties('before', session);
// has roles and is not a Service Portal page - go to UI16
var nt = session.getProperty("nav_to");
var isServicePortalURL = new GlideSPScriptable().isServicePortalURL(nt);
var redirectURL = session.getProperty("login_redirect");
if (!redirectURL && !isServicePortalURL)
return;
// user may have logged in from a frame, the /login_redirect.do page will bust out of it
if (!redirectURL) {
// redirectURL is nav_to
// if nav_to == "welcome.do" then use starting_page
var sPage = session.getProperty("starting_page");
if (sPage && nt == "welcome.do")
nt = sPage;
// Avoid a redirect loop to the home page
var ep = gs.getProperty("glide.login.home");
if (nt) {
if (ep == nt)
nt = null;
}
// PRB726860: if page is still welcome.do, go to glide.login.home preserving frameset
if (nt == "welcome.do") {
session.putProperty("nav_to", ep);
return;
}
session.putProperty("login_redirect", nt || "true");
return "/login_redirect.do?sysparm_stack=no";
}
session.clearProperty("login_redirect");
session.clearProperty("nav_to");
var returnUrl = this.portal;
if (redirectURL && redirectURL != "true") {
var spUrl = new GlideSPScriptable().mapUrlToSPUrl(redirectURL);
returnUrl = spUrl ? this.portal + "?" + spUrl : redirectURL;
}
this.logProperties('after', session);
if (!this.logVariables) {
gs.log('redirectURL: ' + redirectURL);
gs.log('User: ' + user.getName());
gs.log('is internal: ' + (!user.hasRoles()));
gs.log('returnUrl: ' + returnUrl);
}
return returnUrl;
},
logProperties: function(beforeOrAfter, session) {
if (!this.logVariables)
return;
gs.log('SPEntryPage: Redirect ------------------------------- ' + beforeOrAfter);
gs.log('session.starting_page: ' + session.getProperty("starting_page"));
gs.log('session.nav_to: ' + session.getProperty("nav_to"));
gs.log('session.login_redirect: ' + session.getProperty("login_redirect"));
gs.log('gs.fURI: ' + session.getURI());
},
type: 'SPEntryPage'
};
