luci-proto-ipv6: map: Add SNAT fix option for specific ISP

Ensure that the multiple port ranges used with specific ISP
MAP-E implementation are actually SNAT-ed correctly.

Signed-off-by: Arayuki Mago <ms@missing233.com>

modules/luci-base/po/ja/base.po

@@ -11011,6 +11011,26 @@ msgstr ""
 "RFC7597の代わりに従来のMAPインターフェース識別子フォーマット（draft-ietf-"
 "softwire-map-00）を使用"
 
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:90
+msgid "Enable SNAT fix"
+msgstr "SNAT修正を有効化"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:90
+msgid "Apply SNAT fixes with certain ISPs"
+msgstr "特定ISPに対してSNAT修正を適用"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:92
+msgid "Exclude SNAT ports"
+msgstr "SNATポートを除外"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:92
+msgid "List of ports to exclude from SNAT. Separate ports with spaces"
+msgstr "SNATから除外するポートのリスト。スペースで区切る"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:109
+msgid "Duplicate port found: "
+msgstr "重複ポート番号検出："
+
 #: protocols/luci-proto-relay/htdocs/luci-static/resources/protocol/relay.js:179
 msgid "Use routing table"
 msgstr "ルーティングテーブルを使用"
@@ -12194,6 +12214,7 @@ msgstr "有効なポートまたはポート範囲（port1-port2）"
 
 #: modules/luci-base/htdocs/luci-static/resources/validation.js:368
 #: modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js:207
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:106
 msgid "valid port value"
 msgstr "有効なポート番号"
 

modules/luci-base/po/zh_Hans/base.po

@@ -10954,6 +10954,26 @@ msgid ""
 msgstr ""
 "使用旧式 MAP 接口标识符格式（draft-ietf-softwire-map-00），而非 RFC7597"
 
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:90
+msgid "Enable SNAT fix"
+msgstr "启用 SNAT 修复"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:90
+msgid "Apply SNAT fixes with certain ISPs"
+msgstr "对某些 ISP 应用 SNAT 修复"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:92
+msgid "Exclude SNAT ports"
+msgstr "排除 SNAT 端口"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:92
+msgid "List of ports to exclude from SNAT. Separate ports with spaces"
+msgstr "要从 SNAT 中排除的端口列表。用空格分隔"
+
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:109
+msgid "Duplicate port found: "
+msgstr "重复的端口号："
+
 #: protocols/luci-proto-relay/htdocs/luci-static/resources/protocol/relay.js:179
 msgid "Use routing table"
 msgstr "使用路由表"
@@ -12135,6 +12155,7 @@ msgstr "有效端口或端口范围（port1-port2）"
 
 #: modules/luci-base/htdocs/luci-static/resources/validation.js:368
 #: modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js:207
+#: protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js:106
 msgid "valid port value"
 msgstr "有效端口值"
 

protocols/luci-proto-ipv6/htdocs/luci-static/resources/protocol/map.js

@@ -86,5 +86,31 @@ return network.registerProtocol('map', {
 		o.datatype    = 'max(9200)';
 
 		o = s.taboption('advanced', form.Flag, 'legacymap', _('Use legacy MAP'), _('Use legacy MAP interface identifier format (draft-ietf-softwire-map-00) instead of RFC7597'));
+
+		o = s.taboption('advanced', form.Flag, 'snat_fix', _('Enable SNAT fix'), _('Apply SNAT fixes with certain ISPs'));
+
+		o = s.taboption('advanced', form.Value, 'dont_snat_to', _('Exclude SNAT ports'), _('List of ports to exclude from SNAT. Separate ports with spaces'));
+		o.depends('snat_fix', '1');
+		o.datatype = 'string';
+		o.placeholder = '80 443 8080';
+		o.validate = function (section_id, value) {
+			value = value.trim().replace(/\s+/g, ' ');
+			if (!value) return true;
+			let seen = new Set();
+			for (let port of value.split(' ')) {
+				let portNum = parseInt(port, 10);
+				if (!/^\d+$/.test(port) || portNum < 1 || portNum > 65535) {
+					return _('Expecting: %s').format(_('valid port value'));
+				}
+				if (seen.has(port)) {
+					return _('Duplicate port found: ') + port;
+				}
+				seen.add(port);
+			}
+			return true;
+		};
+		o.write = function (section_id, form_value) {
+			return this.super('write', [section_id, form_value.trim().replace(/\s+/g, ' ')]);
+		};
 	}
 });