26b9ba5f8c
A proxyjump callback structure consists of three callbacks as of this writing: before_connection, authenticate and verify_knownhost. One or more of these callbacks can be set as NULL by the user to indicate that libssh should use the defaults. The code checked the presence of the callback stucture but not whether before_connection was available or not (non NULL) before dereferencing it. This could lead to undefined behaviour if the user specifies say authenticate and verify_knownhost for a jump host but not before_connection. This commit fixes the code to add a check for before_connection being non NULL before trying access it. Signed-off-by: Eshan Kelkar <eshankelkar@galorithm.com> Reviewed-by: Jakub Jelen <jjelen@redhat.com> Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
_ _ _ _
(_) (_) (_) (_)
(_) _ (_) _ _ _ _ _ (_) _
(_) (_) (_)(_) _ (_)(_) (_)(_) (_)(_) _
(_) (_) (_) (_) _ (_) _ (_) (_) (_)
(_) (_) (_)(_)(_) (_)(_) (_)(_) (_) (_).org
The SSH library
Why?
Why not ? :) I've began to work on my own implementation of the ssh protocol because i didn't like the currently public ones. Not any allowed you to import and use the functions as a powerful library, and so i worked on a library-based SSH implementation which was non-existing in the free and open source software world.
How/Who?
If you downloaded this file, you must know what it is : a library for accessing ssh client services through C libraries calls in a simple manner. Everybody can use this software under the terms of the LGPL - see the COPYING file
If you ask yourself how to compile libssh, please read INSTALL before anything.
Where ?
Contributing
Please read the file 'CONTRIBUTING.md' next to this README file. It explains our copyright policy and how you should send patches for upstream inclusion.
Have fun and happy libssh hacking!
The libssh Team