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https://issues.apache.org/jira/browse/SSHD-1130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17287752#comment-17287752
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Lyor Goldstein commented on SSHD-1130:
--------------------------------------
Perhaps - but it would involve increasing code complexity (that is already
complex), and I am still not convinced it would work in all cases. I understand
your pain, but I am not sure the solution you suggest is a sound one...
> Sftp directory listing with permission denied error
> ---------------------------------------------------
>
> Key: SSHD-1130
> URL: https://issues.apache.org/jira/browse/SSHD-1130
> Project: MINA SSHD
> Issue Type: Improvement
> Affects Versions: 2.1.0, 2.6.0
> Reporter: Logan
> Priority: Major
>
> Iterating a directory with not enough permissions using {{DirectoryStream}}
> throws {{SftpException}} wrapped as {{RuntimeException}} on the
> {{iterator.next()}}, While this is perfectly valid with Iterator interface
> standard, to really determine if the issue is with permissions we have look
> at the cause of {{RuntimeException}}.
>
> {code:java}
> try (DirectoryStream<Path> ds = Files.newDirectoryStream(remoteDir)) {
> for (Path remoteFile : ds) { ..}
> } catch (RuntimeException ex) {
> Throwable cause = ex.getCause();
> if (cause != null && cause instanceof SftpException) {
> System.err.println("sftp error..probably permissions issue: " +
> ex.getMessage());
> } else {
> System.err.println("Unknown error: " + ex.getMessage());
> }
> }
> {code}
>
> On the flip side using {{SftpClient}} and {{SftpDirEntryIterator}}, an
> {{SftpException}} is throw in the constructor of {{SftpDirEntryIterator}}.
> This makes easy to determine that cause of the error for invalid permissions.
> So wondering if the implementation of {{SftpDirectoryStream}} can be
> improved throw {{SftpException}} in the constructor?
>
> {code:java}
> try (SftpDirEntryIterator pathIterator = new SftpDirEntryIterator(sftpClient,
> remotePath)) {
> while (pathIterator.hasNext()) {
> DirEntry dirEntry = pathIterator.next();
> ...
> }
> } catch (SftpException ex) {}
> {code}
>
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