[jira] [Created] (WW-4958) File upload fails from certain clients

["Tamás Faragó (JIRA)" <ji...@apache.org>]

Tamás Faragó created WW-4958:
--------------------------------

             Summary: File upload fails from certain clients
                 Key: WW-4958
                 URL: https://issues.apache.org/jira/browse/WW-4958
             Project: Struts 2
          Issue Type: Bug
          Components: Dispatch Filter
    Affects Versions: 2.5.17
            Reporter: Tamás Faragó


2.5.11 added more validation on whether to accept file uploads. Previously there was only a check if the HTTP header contained "form/multi-part", now there is the following regex in isMultiPartRequest().

{{public static final String MULTIPART_FORM_DATA_REGEX = "^multipart/form-data(; boundary=[0-9a-zA-Z'()+_,\\-./:=?]\{1,70})?(;charset=[a-zA-Z\\-0-9]\{3,14})?";
}}
This is too restrictive, apache http client for example adds a white space between the semicolon and "charset" and thus all file uploads are failing unless this regex is overwritten in the config. 



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