Martin Uhlir created WW-3885:
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Summary: Invalid email address validation (client side).
EmailValidator regex implementation doesn't match documentation.
Key: WW-3885
URL: https://issues.apache.org/jira/browse/WW-3885
Project: Struts 2
Issue Type: Bug
Components: Core Interceptors, Documentation
Affects Versions: 2.3.4.1
Reporter: Martin Uhlir
EmailValidator documentation specifies following regular expression to validate
email addresses:
\\b(^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@([A-Za-z0-9-])+((\\.com)|(\\.net)|(\\.org)|(\\.info)|(\\.edu)|(\\.mil)|(\\.gov)|(\\.biz)|(\\.ws)|(\\.us)|(\\.tv)|(\\.cc)|(\\.aero)|(\\.arpa)|(\\.coop)|(\\.int)|(\\.jobs)|(\\.museum)|(\\.name)|(\\.pro)|(\\.travel)|(\\.nato)|(\\..{2,3})|(\\..{2,3}\\..{2,3}))$)\\b
but the actual implementation uses following regular expression:
\\b(^['_A-Za-z0-9-]+(\\.['_A-Za-z0-9-]+)*@([A-Za-z0-9-])+(\\.[A-Za-z0-9-]+)*((\\.[A-Za-z0-9]{2,})|(\\.[A-Za-z0-9]{2,}\\.[A-Za-z0-9]{2,}))$)\\b
which is wrong, because this email address "[email protected]" is being validated
as a correct email address (I experience this issue in client side validation).
The (more?) correct regular expression should be probably the one specified in
the documentation, but care needs to be taken of the apostrophe for the front
part of the email address as well. The resulting regular expression might be
something like this:
\\b(^['_A-Za-z0-9-]+(\\.['_A-Za-z0-9-]+)*@([A-Za-z0-9-])+((\\.com)|(\\.net)|(\\.org)|(\\.info)|(\\.edu)|(\\.mil)|(\\.gov)|(\\.biz)|(\\.ws)|(\\.us)|(\\.tv)|(\\.cc)|(\\.aero)|(\\.arpa)|(\\.coop)|(\\.int)|(\\.jobs)|(\\.museum)|(\\.name)|(\\.pro)|(\\.travel)|(\\.nato)|(\\..{2,3})|(\\..{2,3}\\..{2,3}))$)\\b
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