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[Jailkit-users] jk_lsh: problem with single quotes / requested executabl

From: Leo
Subject: [Jailkit-users] jk_lsh: problem with single quotes / requested executable not found
Date: Wed, 20 Apr 2011 16:39:53 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110303 Thunderbird/3.1.9


I'm using jk_lsh in a chroot environment for a webserver. Really great
software! You have no interactive shell within the chroot (for security
reasons) but the application is able to execute system commands anyway.

Now I have a small problem: one of the web applications is passing the
commands with single quotes to jk_lsh. Unfortunately jk_lsh does not
strip the quotes and exits with a "requested executable not found" error:

jk_lsh -c "'/bin/ls' '-l'"

jk_lsh[23012]: jk_lsh version 2.13, started
jk_lsh[23012]: the requested executable '/bin/ls' is not found


jk_lsh -c '/bin/ls -l'
jk_lsh -c "/bin/ls -l"

are working fine.

Regular shells like (ba)sh can handle single quotes in a command:

sh -c "'/bin/ls' '-l'"

Any ideas why jk_lsh does not work with single quotes? Any help would be

Kind regards,

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