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<base href="https://bugzilla.netfilter.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Consider allowing for variable interpolation"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1458">1458</a>
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<th>Summary</th>
<td>Consider allowing for variable interpolation
</td>
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<tr>
<th>Product</th>
<td>nftables
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P5
</td>
</tr>
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<th>Component</th>
<td>nft
</td>
</tr>
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<th>Assignee</th>
<td>pablo@netfilter.org
</td>
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<th>Reporter</th>
<td>kfm@plushkava.net
</td>
</tr></table>
<p>
<div>
<pre>This is another feature request extracted from <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Usability improvements, enabling creation of complex firewalls"
href="show_bug.cgi?id=1434">bug 1434</a> (the "usability" bug).
Currently, variable interpolation isn't supported by the parser. The originally
given example was as follows.
define LOG_PREFIX = "[foo] "
table inet filter {
chain input {
type filter hook input priority 0; policy drop;
counter log prefix "$LOG_PREFIX DROP"
}
}
If this is ever implemented, it might also make sense to allow for strings to
be single-quoted so as to be able to suppress expansion (just like in sh).
Otherwise, there would need to be some means of escaping the $ symbol.
Another approach could be so support a concatenation operator instead. For
instance:
counter log prefix $LOG_PREFIX + " DROP"</pre>
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</p>
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