Aki Yoshida created CAMEL-5574:
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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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