Sindbad~EG File Manager
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<h1 class="menu-title">ClamAV Documentation</h1>
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<h1 id="signatures-based-on-container-metadata"><a class="header" href="#signatures-based-on-container-metadata">Signatures based on container metadata</a></h1>
<p>ClamAV 0.96 allows creating generic signatures matching files stored inside different container types which meet specific conditions. The signature format is:</p>
<pre><code class="language-bash"> VirusName:ContainerType:ContainerSize:FileNameREGEX:
FileSizeInContainer:FileSizeReal:IsEncrypted:FilePos:
Res1:Res2[:MinFL[:MaxFL]]
</code></pre>
<p>where the corresponding fields are:</p>
<ul>
<li>
<p><code>VirusName:</code> Virus name to be displayed when signature matches.</p>
</li>
<li>
<p><code>ContainerType:</code> The file type containing the target file. For example:</p>
<ul>
<li><code>CL_TYPE_ZIP</code>,</li>
<li><code>CL_TYPE_RAR</code>,</li>
<li><code>CL_TYPE_ARJ</code>,</li>
<li><code>CL_TYPE_MSCAB</code>,</li>
<li><code>CL_TYPE_7Z</code>,</li>
<li><code>CL_TYPE_MAIL</code>,</li>
<li><code>CL_TYPE_POSIX_TAR</code>,</li>
<li><code>CL_TYPE_OLD_TAR</code>,</li>
<li><code>CL_TYPE_CPIO_OLD</code>,</li>
<li><code>CL_TYPE_CPIO_ODC</code>,</li>
<li><code>CL_TYPE_CPIO_NEWC</code>,</li>
<li><code>CL_TYPE_CPIO_CRC</code></li>
<li>etc.</li>
</ul>
<p>Use <code>*</code> as a wild card to indicate that container type may be any file type.
For a full list of ClamAV file types, see the <a href="../../appendix/FileTypes.html">ClamAV File Types Reference</a>.</p>
</li>
<li>
<p><code>ContainerSize:</code> size of the container file itself (eg. size of the zip archive) specified in bytes as absolute value or range <code>x-y</code>.</p>
</li>
<li>
<p><code>FileNameREGEX:</code> regular expression describing name of the target file</p>
</li>
<li>
<p><code>FileSizeInContainer:</code> usually compressed size; for MAIL, TAR and CPIO == <code>FileSizeReal</code>; specified in bytes as absolute value or range.</p>
</li>
<li>
<p><code>FileSizeReal:</code> usually uncompressed size; for MAIL, TAR and CPIO == <code>FileSizeInContainer</code>; absolute value or range.</p>
</li>
<li>
<p><code>IsEncrypted:</code> 1 if the target file is encrypted, 0 if it’s not and <code>*</code> to ignore</p>
</li>
<li>
<p><code>FilePos:</code> file position in container (counting from 1); absolute value or range.</p>
</li>
<li>
<p><code>Res1:</code> when <code>ContainerType</code> is <code>CL_TYPE_ZIP</code> or <code>CL_TYPE_RAR</code> this field is treated as a CRC sum of the target file specified in hexadecimal format; for other container types it’s ignored.</p>
</li>
<li>
<p><code>Res2:</code> not used as of ClamAV 0.96.</p>
</li>
</ul>
<p>The signatures for container files are stored inside <code>.cdb</code> files.</p>
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Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists