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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (CAMEL-5574) camel-sftp's stepwise behavior to walk up and down relatively to avoid potential traversal issues
Date Tue, 22 Jan 2013 12:42:15 GMT

     [ https://issues.apache.org/jira/browse/CAMEL-5574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Claus Ibsen reopened CAMEL-5574:
--------------------------------


-1 to this patch.

The code in ftp/sftp/ftps should be similar as we keep the code in sync between the various
FTP protocols. This code is only done at sftp and not the others.

And it causes a regression bug logged as CAMEL-5989

About the logic for stepwise. It is as it was designed, and its better to be consistent across
the FTP protocols, and hence why the code is identical in the xxxOperations source code.

If there is a better algorithm for stepwise then it has to be done across all FTP protocols
and be consistent.
                
> camel-sftp's stepwise behavior to walk up and down relatively to avoid potential traversal
issues
> -------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-5574
>                 URL: https://issues.apache.org/jira/browse/CAMEL-5574
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-ftp
>    Affects Versions: 2.10.1
>            Reporter: Aki Yoshida
>            Assignee: Willem Jiang
>             Fix For: 2.9.4, 2.10.2, 2.11.0
>
>         Attachments: trunk-camel-ftp.diff
>
>
> I am having a directory traversal problem using the stepwise mode of camel-sftp at the
producer side. Basically, it can walk down the path from the starting directory to the walking
directory, but it cannot go back correctly to the original starting directly. The server is
SSH-2.0-Cleo VLProxy/3.0.1 SSH FTP server.
> I saw a related JIRA issue CAMEL-3309 that describes some issues in the stepwise traversal
and some background to this related problem.
> My question is on the part that changes the working directory back to the original starting
folder. I am wondering why we are using stepwise traversal from the ancestor directory towards
the starting child directory, instead of moving upwards relatively from the working directory
back to the starting directory. This reverse traversal does not require accessing the ancestry
path above the staring directory (hence, not affected by the accessing problem). And in fact,
I think this reverse stepwise traversal seems more natural order than doing stepwise traversal
each time from top down. How do you think?
> I have made a change that implements this reverse stepwise traversal in SftpOperations
and also made a few minor improvement changes.
> This changed version passes all the existing tests and works also against the above server.
> I am attaching a patch file for this change. I would appreciate if you can comment on
it.
> Thanks.
> regards, aki

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