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#!/bin/bash
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# This is a simple demo CGI script that illustrates how to use ShellInABox in
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# CGI mode.
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case "${REQUEST_METHOD}" in
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POST)
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# Retrieve CGI parameter, then start shellinabox with this command
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read parms
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parms="$(printf "$(echo "${parms}"|sed -e 's/%\(..\)/\\x\1/g;s/%/%%/g')")"
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parms="${parms#cmd=}"
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# ../support/shellinabox/shellinaboxd --cgi --cert=/etc/apache2/ssl -s "/:$(id -u):$(id -g):HOME:${parms}"
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../support/shellinabox/shellinaboxd -t --verbose -s "/:$(id -u):$(id -g):HOME:${parms}"
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;;
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*) # First time that the CGI script was called. Show initial HTML page.
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printf 'Content-Type: text/html\r\n\r\n'
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cat <<EOF
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<html>
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<head>
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<title>Demo CGI for ShellInABox</title>
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</head>
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<body>
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<h1>Shell In A Box</h1>
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<p>This is a demo CGI script for ShellInABox. It shows how to execute
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ShellInABox in one-shot CGI mode.</p>
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<p>Please note that we do not implement any access controls. So, this
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script is unsafe to use on any untrusted network. It allows anybody
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on the Internet to run arbitrary commands on your computer!</p>
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<p>Use this as a template to write your own custom application -- and
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don't forget to add appropriate access controls.</p>
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<p>Enter command to run:
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<form method="POST">
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<input type="text" name="cmd" style="width: 40em" value="/bin/bash" />
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</form>
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</p>
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</body>
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EOF
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;;
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esac
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