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Posted to oak-issues@jackrabbit.apache.org by "Alex Deparvu (JIRA)" <ji...@apache.org> on 2019/04/12 13:20:00 UTC
[jira] [Commented] (OAK-8231) Unreachable code in
LoginModuleImpl.getLoginId
[ https://issues.apache.org/jira/browse/OAK-8231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16816246#comment-16816246 ]
Alex Deparvu commented on OAK-8231:
-----------------------------------
agreed, let's remove this.
> Unreachable code in LoginModuleImpl.getLoginId
> ----------------------------------------------
>
> Key: OAK-8231
> URL: https://issues.apache.org/jira/browse/OAK-8231
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core, security
> Reporter: angela
> Priority: Minor
>
> [~stillalex], as discussed today it seems that the following block in {{LoginModuleImpl.getLoginId}} can never be reached
> {code}
> [... here if-statements for 3 types of supported credentials...]
> else {
> try {
> NameCallback callback = new NameCallback("User-ID: ");
> callbackHandler.handle(new Callback[] { callback });
> uid = callback.getName();
> } catch (IOException | UnsupportedCallbackException e) {
> onError();
> log.error(e.getMessage(), e);
> }
> }
> {code}
> the reason for this: that block resides inside an if-statement verifying that {{credentials}} are not null. if credentials are not null they will be any of the supported classes according to the implementation of {{getCredentials}}, which will return null if none of the credentials extracted from subject/callback/sharedstate is supported.
> as discussed the safest way to deal with this is probably to get rid of that block altogether. let me know if you have any concern with that approach.
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