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luci-mod-status: fix sporadic logical interfaces resolve failures

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Correct the incorrect netmask calculation logic leading to incorrect
network range comparisons in some cases.

Fixes: #6956
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2024-03-04 23:54:24 +01:00
parent 48e96d8955
commit fa6c345e19
1 changed files with 4 additions and 2 deletions
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6
modules/luci-mod-status/htdocs/luci-static/resources/view/status/routes.js
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@ -13,13 +13,15 @@ var callNetworkInterfaceDump = rpc.declare({
function applyMask(addr, mask, v6) {
var words = v6 ? validation.parseIPv6(addr) : validation.parseIPv4(addr);
var bword = v6 ? 0xffff : 0xff;
var bwlen = v6 ? 16 : 8;
if (!words || mask < 0 || mask > (v6 ? 128 : 32))
return null;
for (var i = 0; i < words.length; i++) {
var b = Math.min(mask, v6 ? 16 : 8);
words[i] &= ((1 << b) - 1);
var b = Math.min(mask, bwlen);
words[i] &= (bword << (bwlen - b)) & bword;
mask -= b;
}