Hello,
first I would like to say thank you for your reply, and tell you I use XEM
4.0.
I use the code bellow to authorize a user and the same time to assign in a
group, if he/she doesn't exist. The problems is when the code performs the
assignment in a group, since you are not logged in, you are a XWikiGuest,
the group page have to have explicit rights (edit) for the guest.
/**
*
* @author jdurancal
*/
@Component
public class LTIAuthServiceImpl extends XWikiAuthServiceImpl {
@Override
public Principal authenticate(String username, String password,
XWikiContext context) throws XWikiException {
XWikiServletRequest request = (XWikiServletRequest)
context.getRequest();
if (!context.getAction().equalsIgnoreCase("logout")) {
try {
LTIEnvironment LTIEnvironment = new LTIEnvironment(request);
if (LTIEnvironment.isAuthenticated()) {
String usernameLTI = LTIEnvironment.getUserName();
if (usernameLTI.contains(":")) {
usernameLTI = usernameLTI.split(":")[1];
}
// get the group to assigna to the user.
String group =
LTIEnvironment.getParameter("custom_groups");
return syncUser(usernameLTI, group, context,
LTIEnvironment.isInstructor());
} else {
Exception lastException =
LTIEnvironment.getLastException();
System.out.println("Error LTI authentication " +
(lastException != null ? lastException.getMessage() : ""));
}
} catch (Exception ex) {
System.out.println("Execption authentication " + ex);
}
}
// Fallback on standard XWiki authentication
return super.authenticate(username, password, context);
}
/**
* Creates the user if he doesn't exist in the XWiki repository. User is
assigned
* to the default XWikiAllGroup
* @param user
* @param context
* @throws com.xpn.xwiki.XWikiException
*/
protected Principal syncUser(String user, String groupName, XWikiContext
context, boolean isInstructor) throws XWikiException {
String xwikiUser = super.findUser(user, context);
String wikiNameShow = context.getDatabase();
System.out.println("["+wikiNameShow+"] usernameLTI="+user+",
GroupsLTI:"+groupName);
if (xwikiUser == null) {
System.out.println("["+wikiNameShow+"] LTI Create user: User " +
user + " does not exist");
String wikiname = context.getWiki().clearName(user, true, true,
context);
context.getWiki().createEmptyUser(wikiname, "edit", context);
System.out.println("["+wikiNameShow+"] LTI Create user: User " +
user + " has been created");
xwikiUser = "XWiki."+user;
// if the user is "instructor", assign admin rights except in
speakapps wiki
if (isInstructor &&
!context.getWiki().getName().equalsIgnoreCase("speakapps")) {
try {
this.addUserGroup(xwikiUser, user, "XWikiAdminGroup",
context);
}catch(Exception ex) {
System.out.println("["+wikiNameShow+"] Execption adding
admin user "+ex);
}
}
}
// És un group però no és l'administrador
if (groupName != null &&
!groupName.equalsIgnoreCase("XWikiAdminGroup")) {
try {
this.addUserGroup(xwikiUser, user, groupName, context);
}catch(Exception ex) {
System.out.println("["+wikiNameShow+"] Execption adding user
a \""+groupName+"\" group "+ex);
}
}
return new SimplePrincipal(context.getDatabase() + ":" + xwikiUser);
}
private boolean addUserGroup(String xwikiUser, String user, String
groupName, XWikiContext context) throws XWikiException {
boolean isAdded = false;
Group group = Group.getGroup("XWiki", groupName, context);
if (group != null && !group.isMember(xwikiUser, context)) {
if (group.addUser(user, context)) {
group.save(context);
isAdded = true;
System.out.println("["+context.getDatabase()+"] add a
\""+groupName+"\" member " + xwikiUser);
}
}
return isAdded;
}
}
Best regards.
--
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