luci-base: fix ip6hint option dependencies and validation

Ref: https://forum.openwrt.org/t/odhcpd-make-lease-file-persistent/44118/8
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 10 insertions, 1 deletions

diff --git a/modules/luci-base/htdocs/luci-static/resources/protocol/static.js b/modules/luci-base/htdocs/luci-static/resources/protocol/static.js
index f8a6d9486..8470e0a20 100644
--- a/modules/luci-base/htdocs/luci-static/resources/protocol/static.js
+++ b/modules/luci-base/htdocs/luci-static/resources/protocol/static.js
@@ -187,8 +187,17 @@ return network.registerProtocol('static', {
 		o.datatype = 'max(64)';
 
 		o = s.taboption('general', form.Value, 'ip6hint', _('IPv6 assignment hint'), _('Assign prefix parts using this hexadecimal subprefix ID for this interface.'));
+		o.placeholder = '0';
+		o.validate = function(section_id, value) {
+			var n = parseInt(value, 16);
+
+			if (!/^(0x)?[0-9a-fA-F]+$/.test(value) || isNaN(n) || n >= 0xffffffff)
+				return _('Expecting an hexadecimal assignment hint');
+
+			return true;
+		};
 		for (var i = 33; i <= 64; i++)
-			o.depends('ip6assign', i);
+			o.depends('ip6assign', String(i));
 
 		o = s.taboption('general', form.DynamicList, 'ip6addr', _('IPv6 address'));
 		o.datatype = 'ip6addr';