On Wed, 23 Apr 2025 17:34:33 GMT, Eirik Bjørsnøs <eir...@openjdk.org> wrote:

>> Please help review this PR which disables the unspecified but long-standing 
>> feature where an `FtpURLConnection` is opened as a fallback for non-local 
>> file URLs.
>> 
>> Before this change, if a file URL has a non-local host component, say 
>> `file://remotehost/folder/data.txt`, then the  implementation would attempt 
>> opening an FTP connection to `remotehost`. After this change, such URLs will 
>> be rejected with a `MalformedURLException`, unless the FTP fallback feature 
>> is explicitly re-enabled via a system property.
>> 
>> This change was initially discussed here: 
>> https://mail.openjdk.org/pipermail/net-dev/2025-March/025988.html
>> 
>> See the above discussion and CSR draft JDK-8354678 for the motivation for 
>> this change. I plan to update the CSR pending an initial round of review of 
>> this PR.
>> 
>> This PR:
>> 
>> * Changes file URL `Handler::openConnection` implementation for unix/windows 
>> to throw `MalformedURLException`, unless the FTP fallback feature is 
>> explicitly enabled by configuration.
>> * Introduces a new system property `sun.net.www.protocol.file.ftp-enabled` 
>> which when set to `true` re-enables the feature.
>> * Updates the existing test `NonLocalFtpFallback` to enable the feature via 
>> said system property.
>> * Adds a new test `NonLocalFtpFallbackDisabled` verifying that a 
>> `MalformedURLException` is thrown by default for a non-local URL host 
>> component.
>> 
>> I have added a Release Note as a subtask in the JBS issue, this also needs a 
>> review.
>
> Eirik Bjørsnøs has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Fix repeated "should should"

> > java/net/URLConnection/UNCTest.java

> This test wants to verify that any URLConnection to an UNC path is 
> unconnected. Instead, since the UNC path does not exists, it just tests that 
> the FtpURLConnection is unconnected, which it always is and has been and 
> which in any case seems unrelated to JDK-4401485

Files https://bugs.openjdk.org/browse/JDK-8355475 to track an enhancement to 
make UNCTest use an existing Administrative Shares UNC path.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/24657#issuecomment-2826923618

Reply via email to