EmailValidator fails with ArrayIndexOutOfBoundsException on domain names longer
than 10 segments
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Key: VALIDATOR-220
URL: https://issues.apache.org/jira/browse/VALIDATOR-220
Project: Commons Validator
Issue Type: Bug
Components: Framework
Affects Versions: 1.3.1 Release, 1.3.0 Release
Environment: $ uname -a
Linux frisky 2.6.17-10-generic #2 SMP Tue Dec 5 22:28:26 UTC 2006 i686 GNU/Linux
Reporter: Adam Gordon
The EmailValidator class, specifically, the "protected boolean
isValidSymbolicDomain(String domain)" method makes an assumption on the PERL
RegEX rules, specifically, that no more than 10 domains/subdomains may be
specified in an email address. I.e. an email address of "[EMAIL PROTECTED]" is
valid according to the EmailValidator whereas an email address of "[EMAIL
PROTECTED]" causes isValidSymbolicDomain(String) to throw an
ArrayIndexOutOfBoundsException because the "domainSegment" local variable is
hard-coded to have a length of 10.
Whether or not this is due to a limitation in PERL w.r.t. the maximum number of
allowed groupings, I do not know, but the RFC for email addresses does not
appear to specify a maximum number. Additionally, although I couldn't find it
in the RFC, Wikipedia says that the maximum number of characters for the domain
name is 255 - though I am very hesitant to cite/use Wikipedia as an official
source...
Granted, I've never seen a domain name w/ more than 5 subdomain names, let
alone 10, but it seems like it should be supported regardless.
I'd submit a patch, but I wanted to discuss possible courses of action and
determine the "right" (or at least acceptable) one. Possible solutions are:
1. check if the counter i in the for loop is > 10 and perform some action that
stops the iterative process.
2. if the max number of groupings in PERL RegEX is 10, maybe we shouldn't use
RegEX to determine the groupings.
Please let me know if you 1) have an alternative solution and 2) want me to
code a/the fix.
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