This enables SSO for JIRA/Confluence and other apps utlizing Atlassian Seraph.

Install:
- Copy the OpenSSO client sdk to atlassian-jira/WEB-INF/lib/
- Create/copy an AMConfig.properties to atlassian-jira/WEB-INF/classes/ (or somewhere in the classpath)
- Copy this jar to atlassian-jira/WEB-INF/lib/

- edit atlassian-jira/WEB-INF/classes/seraph-config.xml:
login.url
https://YOUR_SSO_SERVER/sso/UI/Login?goto=${originalurl}

link.login.url
https://YOUR_SSO_SERVER/sso/UI/Login?goto=${originalurl}

logout.url
https://YOUR_SSO_SERVER/sso/UI/Logout

<!-- COMMENT OUT THIS LINE authenticator class="com.atlassian.seraph.auth.DefaultAuthenticator"/-->

- You will need to do one of two things:

1) If you have a public JIRA, you're done. Although you will still see the login form so you
may want to remove that template.

2) If you have a private JIRA and always to be redirected to SSO - see no login form/links -
add to atlassian-jira/WEB-INF/classes/seraph-paths.xml:

/*
user

Confluence 3.0+:
- Use com.sun.identity.provider.seraph.OpenSsoConfluenceAuthenticator
- Thanks to Casey.BUTTERWORTH at suncorp.com.au
* https://opensso.dev.java.net/servlets/ReadMsg?listName=users&msgNo=11574

Build:
- Use maven 2.x
- You will need to grab opensso.zip and install the client sdk manually
until one appears in some public repository.
- Add https://maven.atlassian.com/repository/public to your repositories