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From "Aki Yoshida (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-5574) camel-sftp's stepwise behavior to walk up and down relatively to avoid potential traversal issues
Date Thu, 06 Sep 2012 20:57:07 GMT
Aki Yoshida created CAMEL-5574:
----------------------------------

             Summary: 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


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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