> 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: Rename system property to "jdk.net.file.ftpfallback" ------------- Changes: - all: https://git.openjdk.org/jdk/pull/24657/files - new: https://git.openjdk.org/jdk/pull/24657/files/42d67659..8be0010f Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=24657&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24657&range=00-01 Stats: 4 lines in 3 files changed: 0 ins; 0 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/24657.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24657/head:pull/24657 PR: https://git.openjdk.org/jdk/pull/24657
