RFR: 8348986: Improve coverage of enhanced exception messages [v11]

[Mark Sheppard]

On Mon, 26 May 2025 10:31:39 GMT, Michael McMahon <michaelm at openjdk.org> wrote:

>> Hi,
>> 
>> Enhanced exception messages are designed to hide sensitive information such as hostnames, IP 
>> addresses from exception message strings, unless the enhanced mode for the specific category 
>> has been explicitly enabled. Enhanced exceptions were first introduced in 8204233 in JDK 11 and 
>> updated in 8207846.
>> 
>> This PR aims to increase the coverage of enhanced exception messages in the networking code.
>> A limited number of exceptions are already hidden (restricted) by default. The new categories and 
>> exceptions in this PR will be restricted on an opt-in basis, ie. the default mode will be enhanced
>> (while preserving the existing behavior).
>> 
>> The mechanism is controlled by the security/system property "jdk.includeInExceptions" which takes as value
>> a comma separated list of category names, which identify groups of exceptions where the exception
>> message may be enhanced. Any category not listed is "restricted" which means that potentially
>> sensitive information (such as hostnames, IP addresses, user identities) are excluded from the message text.
>> 
>> The changes to the java.security conf file describe the exact changes in terms of the categories now
>> supported and any changes in behavior.
>> 
>> Thanks,
>> Michael
>
> Michael McMahon has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 28 commits:
> 
>  - Merge branch 'master' into 8348986-exceptions
>  - update
>  - reduced number of new categories
>  - Merge branch 'master' into 8348986-exceptions
>  - Merge branch 'master' into 8348986-exceptions
>  - Merge branch 'master' into 8348986-exceptions
>  - Merge branch 'master' into 8348986-exceptions
>  - Review update
>  - review update
>  - Merge branch 'master' into 8348986-exceptions
>  - ... and 18 more: https://git.openjdk.org/jdk/compare/e961b13c...cc518c19

src/java.base/share/classes/java/net/HostPortrange.java line 73:

> 71: 
> 72:         // first separate string into two fields: hoststr, portstr
> 73:         String hoststr = null, portstr = null;

you could take the opportunity to update the HostPortrange constructor signature refactor rename
the parameter str to hostname  ;-)

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PR Review Comment: https://git.openjdk.org/jdk/pull/23929#discussion_r2107715671