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luci-base: uci.js: prevent sending empty uci set operations

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Under certain circumstances, a staged uci option value might get unset
again before saving the config, leaving an empty section change set
behind, causing the save call to send an empty uci set request via rpc,
triggering an ubus code 4 (Resource not found) error.

In particular this prevented bridge VLANs from getting saved properly.

Fixes: 
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich
2022-07-23 00:10:17 +02:00
parent 2771360108
commit 25dcd0b77c
1 changed files with 15 additions and 12 deletions

27
modules/luci-base/htdocs/luci-static/resources/uci.js

@ -2,6 +2,14 @@
'require rpc';
'require baseclass';
function isEmpty(object, ignore) {
for (var property in object)
if (object.hasOwnProperty(property) && property != ignore)
return false;
return true;
}
/**
* @class uci
* @memberof LuCI
@ -570,16 +578,7 @@ return baseclass.extend(/** @lends LuCI.uci.prototype */ {
/* undelete option */
if (d[conf] && d[conf][sid]) {
var empty = true;
for (var key in d[conf][sid]) {
if (key != opt && d[conf][sid].hasOwnProperty(key)) {
empty = false;
break;
}
}
if (empty)
if (isEmpty(d[conf][sid], opt))
delete d[conf][sid];
else
delete d[conf][sid][opt];
@ -589,8 +588,12 @@ return baseclass.extend(/** @lends LuCI.uci.prototype */ {
}
else {
/* revert any change for to-be-deleted option */
if (c[conf] && c[conf][sid])
delete c[conf][sid][opt];
if (c[conf] && c[conf][sid]) {
if (isEmpty(c[conf][sid], opt))
delete c[conf][sid];
else
delete c[conf][sid][opt];
}
/* only delete existing options */
if (v[conf] && v[conf][sid] && v[conf][sid].hasOwnProperty(opt)) {