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</pre></td>
<td class='lines'><pre><code><style>pre { line-height: 125%; margin: 0; }
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="ch">#!/usr/bin/env bash</span>
<span class="c1">#</span>
<span class="c1">#   Script to install host system binaries along with required libraries.</span>
<span class="c1">#</span>
<span class="c1">#   Copyright (C) 2012-2017 Jo-Philipp Wich &lt;jo@mein.io&gt;</span>
<span class="c1">#</span>
<span class="c1">#   This program is free software; you can redistribute it and/or modify</span>
<span class="c1">#   it under the terms of the GNU General Public License as published by</span>
<span class="c1">#   the Free Software Foundation; either version 2 of the License, or</span>
<span class="c1">#   (at your option) any later version.</span>
<span class="c1">#</span>
<span class="c1">#   This program is distributed in the hope that it will be useful,</span>
<span class="c1">#   but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="c1">#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<span class="c1">#   GNU General Public License for more details.</span>
<span class="c1">#</span>
<span class="c1">#   You should have received a copy of the GNU General Public License</span>
<span class="c1">#   along with this program; if not, write to the Free Software</span>
<span class="c1">#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA</span>

<span class="nv">DIR</span><span class="o">=</span><span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span><span class="p">;</span> <span class="nb">shift</span>

_cp<span class="o">()</span> <span class="o">{</span>
	cp <span class="si">${</span><span class="nv">VERBOSE</span><span class="p">:+-v</span><span class="si">}</span> -L <span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span> <span class="s2">&quot;</span><span class="nv">$2</span><span class="s2">&quot;</span> <span class="o">||</span> <span class="o">{</span>
		<span class="nb">echo</span> <span class="s2">&quot;cp(</span><span class="nv">$1</span><span class="s2"> </span><span class="nv">$2</span><span class="s2">) failed&quot;</span> &gt;<span class="p">&amp;</span><span class="m">2</span>
		<span class="nb">exit</span> <span class="m">1</span>
	<span class="o">}</span>
<span class="o">}</span>

_mv<span class="o">()</span> <span class="o">{</span>
	mv <span class="si">${</span><span class="nv">VERBOSE</span><span class="p">:+-v</span><span class="si">}</span> <span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span> <span class="s2">&quot;</span><span class="nv">$2</span><span class="s2">&quot;</span> <span class="o">||</span> <span class="o">{</span>
		<span class="nb">echo</span> <span class="s2">&quot;mv(</span><span class="nv">$1</span><span class="s2"> </span><span class="nv">$2</span><span class="s2">) failed&quot;</span> &gt;<span class="p">&amp;</span><span class="m">2</span>
		<span class="nb">exit</span> <span class="m">1</span>
	<span class="o">}</span>
<span class="o">}</span>

_md<span class="o">()</span> <span class="o">{</span>
	mkdir <span class="si">${</span><span class="nv">VERBOSE</span><span class="p">:+-v</span><span class="si">}</span> -p <span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span> <span class="o">||</span> <span class="o">{</span>
		<span class="nb">echo</span> <span class="s2">&quot;mkdir(</span><span class="nv">$1</span><span class="s2">) failed&quot;</span> &gt;<span class="p">&amp;</span><span class="m">2</span>
		<span class="nb">exit</span> <span class="m">2</span>
	<span class="o">}</span>
<span class="o">}</span>

_ln<span class="o">()</span> <span class="o">{</span>
	ln <span class="si">${</span><span class="nv">VERBOSE</span><span class="p">:+-v</span><span class="si">}</span> -sf <span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span> <span class="s2">&quot;</span><span class="nv">$2</span><span class="s2">&quot;</span> <span class="o">||</span> <span class="o">{</span>
		<span class="nb">echo</span> <span class="s2">&quot;ln(</span><span class="nv">$1</span><span class="s2"> </span><span class="nv">$2</span><span class="s2">) failed&quot;</span> &gt;<span class="p">&amp;</span><span class="m">2</span>
		<span class="nb">exit</span> <span class="m">3</span>
	<span class="o">}</span>
<span class="o">}</span>

_relpath<span class="o">()</span> <span class="o">{</span>
	<span class="nb">local</span> <span class="nv">base</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>readlink -f <span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span><span class="k">)</span><span class="s2">&quot;</span>
	<span class="nb">local</span> <span class="nv">dest</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>readlink -f <span class="s2">&quot;</span><span class="nv">$2</span><span class="s2">&quot;</span><span class="k">)</span><span class="s2">&quot;</span>
	<span class="nb">local</span> up

	<span class="o">[</span> -d <span class="s2">&quot;</span><span class="nv">$base</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">||</span> <span class="nv">base</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">base</span><span class="p">%/*</span><span class="si">}</span><span class="s2">&quot;</span>
	<span class="o">[</span> -d <span class="s2">&quot;</span><span class="nv">$dest</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">||</span> <span class="nv">dest</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">dest</span><span class="p">%/*</span><span class="si">}</span><span class="s2">&quot;</span>

	<span class="k">while</span> true<span class="p">;</span> <span class="k">do</span>
		<span class="k">case</span> <span class="s2">&quot;</span><span class="nv">$base</span><span class="s2">&quot;</span>
			in <span class="s2">&quot;</span><span class="nv">$dest</span><span class="s2">&quot;</span>/*<span class="o">)</span>
				<span class="nb">echo</span> <span class="s2">&quot;</span><span class="nv">$up</span><span class="s2">/</span><span class="si">${</span><span class="nv">base</span><span class="p">#</span><span class="nv">$dest</span><span class="p">/</span><span class="si">}</span><span class="s2">&quot;</span>
				<span class="nb">break</span>
			<span class="p">;;</span>
			*<span class="o">)</span>
				<span class="nv">dest</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">dest</span><span class="p">%/*</span><span class="si">}</span><span class="s2">&quot;</span>
				<span class="nv">up</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">up</span><span class="p">:+</span><span class="nv">$up</span><span class="p">/</span><span class="si">}</span><span class="s2">..&quot;</span>
			<span class="p">;;</span>
		<span class="k">esac</span>
	<span class="k">done</span>
<span class="o">}</span>

_runas_so<span class="o">()</span> <span class="o">{</span>
	cat <span class="s">&lt;&lt;-EOT | ${CC:-gcc} -x c -fPIC -shared -o &quot;$1&quot; -</span>
<span class="s">		#include &lt;unistd.h&gt;</span>
<span class="s">		#include &lt;stdio.h&gt;</span>
<span class="s">		#include &lt;stdlib.h&gt;</span>

<span class="s">		int mangle_arg0(int argc, char **argv, char **env) {</span>
<span class="s">			char *arg0 = getenv(&quot;RUNAS_ARG0&quot;);</span>

<span class="s">			if (arg0) {</span>
<span class="s">				argv[0] = arg0;</span>
<span class="s">				unsetenv(&quot;RUNAS_ARG0&quot;);</span>
<span class="s">			}</span>

<span class="s">			return 0;</span>
<span class="s">		}</span>

<span class="s">		__attribute__((section(&quot;.init_array&quot;)))</span>
<span class="s">		static void *mangle_arg0_constructor = &amp;mangle_arg0;</span>
<span class="s">	EOT</span>

	<span class="o">[</span> -x <span class="s2">&quot;</span><span class="nv">$1</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">||</span> <span class="o">{</span>
		<span class="nb">echo</span> <span class="s2">&quot;compiling preload library failed&quot;</span> &gt;<span class="p">&amp;</span><span class="m">2</span>
		<span class="nb">exit</span> <span class="m">5</span>
	<span class="o">}</span>
<span class="o">}</span>

<span class="k">for</span> LDD in <span class="si">${</span><span class="nv">PATH</span><span class="p">//://ldd </span><span class="si">}</span>/ldd<span class="p">;</span> <span class="k">do</span>
	<span class="s2">&quot;</span><span class="nv">$LDD</span><span class="s2">&quot;</span> --version &gt;/dev/null <span class="m">2</span>&gt;/dev/null <span class="o">&amp;&amp;</span> <span class="nb">break</span>
	<span class="nv">LDD</span><span class="o">=</span><span class="s2">&quot;&quot;</span>
<span class="k">done</span>

<span class="o">[</span> -n <span class="s2">&quot;</span><span class="nv">$LDD</span><span class="s2">&quot;</span> -a -x <span class="s2">&quot;</span><span class="nv">$LDD</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">||</span> <span class="nv">LDD</span><span class="o">=</span>

<span class="k">for</span> BIN in <span class="s2">&quot;</span><span class="nv">$@</span><span class="s2">&quot;</span><span class="p">;</span> <span class="k">do</span>
	<span class="o">[</span> -n <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span> -a -n <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">||</span> <span class="o">{</span>
		<span class="nb">echo</span> <span class="s2">&quot;Usage: </span><span class="nv">$0</span><span class="s2"> &lt;destdir&gt; &lt;executable&gt; ...&quot;</span> &gt;<span class="p">&amp;</span><span class="m">2</span>
		<span class="nb">exit</span> <span class="m">1</span>
	<span class="o">}</span>

	<span class="o">[</span> ! -d <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/lib&quot;</span> <span class="o">]</span> <span class="o">&amp;&amp;</span> <span class="o">{</span>
		_md <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/lib&quot;</span>
		_md <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/usr&quot;</span>
		_ln <span class="s2">&quot;../lib&quot;</span> <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/usr/lib&quot;</span>
	<span class="o">}</span>

	<span class="o">[</span> ! -x <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/lib/runas.so&quot;</span> <span class="o">]</span> <span class="o">&amp;&amp;</span> <span class="o">{</span>
		_runas_so <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/lib/runas.so&quot;</span>
	<span class="o">}</span>

	<span class="nv">LDSO</span><span class="o">=</span><span class="s2">&quot;&quot;</span>

	<span class="o">[</span> -n <span class="s2">&quot;</span><span class="nv">$LDD</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">&amp;&amp;</span> <span class="o">[</span> -x <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">&amp;&amp;</span> file <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span> <span class="p">|</span> grep -sqE <span class="s2">&quot;ELF.*(executable|interpreter)&quot;</span> <span class="o">&amp;&amp;</span> <span class="o">{</span>
		<span class="k">for</span> token in <span class="k">$(</span><span class="s2">&quot;</span><span class="nv">$LDD</span><span class="s2">&quot;</span> <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span> <span class="m">2</span>&gt;/dev/null<span class="k">)</span><span class="p">;</span> <span class="k">do</span>
			<span class="k">case</span> <span class="s2">&quot;</span><span class="nv">$token</span><span class="s2">&quot;</span> in */*.so*<span class="o">)</span>
				<span class="k">case</span> <span class="s2">&quot;</span><span class="nv">$token</span><span class="s2">&quot;</span> in
					*ld-*.so*<span class="o">)</span> <span class="nv">LDSO</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">token</span><span class="p">##*/</span><span class="si">}</span><span class="s2">&quot;</span> <span class="p">;;</span>
				<span class="k">esac</span>

				<span class="nv">dest</span><span class="o">=</span><span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/lib/</span><span class="si">${</span><span class="nv">token</span><span class="p">##*/</span><span class="si">}</span><span class="s2">&quot;</span>
				<span class="nv">ddir</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">dest</span><span class="p">%/*</span><span class="si">}</span><span class="s2">&quot;</span>

				<span class="o">[</span> -f <span class="s2">&quot;</span><span class="nv">$token</span><span class="s2">&quot;</span> -a ! -f <span class="s2">&quot;</span><span class="nv">$dest</span><span class="s2">&quot;</span> <span class="o">]</span> <span class="o">&amp;&amp;</span> <span class="o">{</span>
					_md <span class="s2">&quot;</span><span class="nv">$ddir</span><span class="s2">&quot;</span>
					_cp <span class="s2">&quot;</span><span class="nv">$token</span><span class="s2">&quot;</span> <span class="s2">&quot;</span><span class="nv">$dest</span><span class="s2">&quot;</span>
				<span class="o">}</span>
			<span class="p">;;</span> <span class="k">esac</span>
		<span class="k">done</span>
	<span class="o">}</span>

	<span class="c1"># is a dynamically linked executable</span>
	<span class="k">if</span> <span class="o">[</span> -n <span class="s2">&quot;</span><span class="nv">$LDSO</span><span class="s2">&quot;</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span>
		<span class="nb">echo</span> <span class="s2">&quot;Bundling </span><span class="si">${</span><span class="nv">BIN</span><span class="p">##*/</span><span class="si">}</span><span class="s2">&quot;</span>

		<span class="nv">RUNDIR</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>readlink -f <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span><span class="k">)</span><span class="s2">&quot;</span><span class="p">;</span> <span class="nv">RUNDIR</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">RUNDIR</span><span class="p">%/*</span><span class="si">}</span><span class="s2">&quot;</span>
		<span class="nv">RUN</span><span class="o">=</span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">LDSO</span><span class="p">#ld-</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">;</span> <span class="nv">RUN</span><span class="o">=</span><span class="s2">&quot;run-</span><span class="si">${</span><span class="nv">RUN</span><span class="p">%%.so*</span><span class="si">}</span><span class="s2">.sh&quot;</span>
		<span class="nv">REL</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>_relpath <span class="s2">&quot;</span><span class="nv">$DIR</span><span class="s2">/lib&quot;</span> <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span><span class="k">)</span><span class="s2">&quot;</span>

		_mv <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span> <span class="s2">&quot;</span><span class="nv">$RUNDIR</span><span class="s2">/.</span><span class="si">${</span><span class="nv">BIN</span><span class="p">##*/</span><span class="si">}</span><span class="s2">.bin&quot;</span>

		cat <span class="s">&lt;&lt;-EOF &gt; &quot;$BIN&quot;</span>
<span class="s">			#!/usr/bin/env bash</span>
<span class="s">			dir=&quot;\$(dirname &quot;\$0&quot;)&quot;</span>
<span class="s">			export RUNAS_ARG0=&quot;\$0&quot;</span>
<span class="s">			export LD_PRELOAD=&quot;\$dir/${REL:+$REL/}runas.so&quot;</span>
<span class="s">			exec &quot;\$dir/${REL:+$REL/}$LDSO&quot; --library-path &quot;\$dir/${REL:+$REL/}&quot; &quot;\$dir/.${BIN##*/}.bin&quot; &quot;\$@&quot;</span>
<span class="s">		EOF</span>

		chmod <span class="si">${</span><span class="nv">VERBOSE</span><span class="p">:+-v</span><span class="si">}</span> <span class="m">0755</span> <span class="s2">&quot;</span><span class="nv">$BIN</span><span class="s2">&quot;</span>
	<span class="k">fi</span>
<span class="k">done</span>
</pre></div>
</code></pre></td></tr></table>
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