Michiel Toneman created WW-4187:
-----------------------------------

             Summary: ServletRedirectResult only works with a limited set of 
hardcoded URL protocols
                 Key: WW-4187
                 URL: https://issues.apache.org/jira/browse/WW-4187
             Project: Struts 2
          Issue Type: Bug
    Affects Versions: 2.3.15.1, 2.3.14.3, 2.3.14.2, 2.3.14.1, 2.3.14, 2.3.12, 
2.3.8, 2.3.7
            Reporter: Michiel Toneman


The isPathUrl(String url) implementation was changed from:

return (url.indexOf(':') == -1);

to:

return !url.startsWith("http:")
                && !url.startsWith("https:")
                && !url.startsWith("mailto:";)
                && !url.startsWith("file:")
                && !url.startsWith("ftp:");

This breaks integrations which require a redirect in (e.g.) a mobile app for 
iOS which often use custom protocols such as myapp:// 

There are also numerous valid / common protocols which are not in this list.

The result of this change is that redirects to such URLs are treated as local 
redirects (paths), rather than absolute redirects.






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