Tamás Faragó created WW-4958:
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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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