luci: add chinadns-ng domain default tag config (#2854)

luci-app-passwall/luasrc/model/cbi/passwall/client/acl_config.lua

@@ -333,6 +333,17 @@ if api.is_finded("chinadns-ng") then
 	o:depends({ tcp_proxy_mode = "chnroute", dns_mode = "dns2socks" })
 	o:depends({ tcp_proxy_mode = "chnroute", dns_mode = "xray" })
 	o:depends({ tcp_proxy_mode = "chnroute", dns_mode = "sing-box" })
+	chinadns_ng_default_tag = s:option(ListValue, "chinadns_ng_default_tag", translate("ChinaDNS-NG Domain Default Tag"))
+	chinadns_ng_default_tag.default = "smart"
+	chinadns_ng_default_tag:value("smart", translate("Smart DNS"))
+	chinadns_ng_default_tag:value("gfw", translate("Remote DNS"))
+	chinadns_ng_default_tag:value("chn", translate("Direct DNS"))
+	chinadns_ng_default_tag.description = "<ul>"
+			.. "<li>" .. translate("Forward to both remote and direct DNS, if the direct DNS resolution result is a mainland China ip, then use the direct result, otherwise use the remote result") .. "</li>"
+			.. "<li>" .. translate("Remote DNS can avoid more DNS leaks, but some domestic domain names maybe to proxy!") .. "</li>"
+			.. "<li>" .. translate("Direct DNS Internet experience may be better, but DNS will be leaked!") .. "</li>"
+			.. "</ul>"
+	chinadns_ng_default_tag:depends("chinadns_ng", true)
 end
 
 if has_chnlist then

luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua

@@ -382,6 +382,17 @@ o.rmempty = false
 if api.is_finded("chinadns-ng") then
 	o = s:taboption("DNS", Flag, "chinadns_ng", translate("ChinaDNS-NG"), translate("The effect is better, but will increase the memory."))
 	o.default = "0"
+	chinadns_ng_default_tag = s:taboption("DNS", ListValue, "chinadns_ng_default_tag", translate("ChinaDNS-NG Domain Default Tag"))
+	chinadns_ng_default_tag.default = "smart"
+	chinadns_ng_default_tag:value("smart", translate("Smart DNS"))
+	chinadns_ng_default_tag:value("gfw", translate("Remote DNS"))
+	chinadns_ng_default_tag:value("chn", translate("Direct DNS"))
+	chinadns_ng_default_tag.description = "<ul>"
+			.. "<li>" .. translate("Forward to both remote and direct DNS, if the direct DNS resolution result is a mainland China ip, then use the direct result, otherwise use the remote result") .. "</li>"
+			.. "<li>" .. translate("Remote DNS can avoid more DNS leaks, but some domestic domain names maybe to proxy!") .. "</li>"
+			.. "<li>" .. translate("Direct DNS Internet experience may be better, but DNS will be leaked!") .. "</li>"
+			.. "</ul>"
+	chinadns_ng_default_tag:depends("chinadns_ng", true)
 	o:depends({dns_mode = "dns2socks"})
 	o:depends({dns_mode = "dns2tcp"})
 	o:depends({dns_mode = "sing-box", remote_fakedns = false})

luci-app-passwall/po/zh-cn/passwall.po

@@ -169,6 +169,15 @@ msgstr "远程DNS可以避免更多的DNS泄露，但会导致规则列表外的
 msgid "Direct DNS Internet experience may be better, but DNS will be leaked!"
 msgstr "直连DNS上网体验可能会更佳，但是会泄露DNS！"
 
+msgid "ChinaDNS-NG Domain Default Tag"
+msgstr "ChinaDNS-NG 域名默认标签"
+
+msgid "Smart DNS"
+msgstr "智能 DNS"
+
+msgid "Forward to both remote and direct DNS, if the direct DNS resolution result is a mainland China ip, then use the direct result, otherwise use the remote result"
+msgstr "同时转发给远程和直连DNS，如果直连DNS解析结果是大陆ip，则使用直连结果，否则使用远程结果"
+
 msgid "Filter Proxy Host IPv6"
 msgstr "过滤代理域名 IPv6"
 

luci-app-passwall/root/usr/share/passwall/0_default_config

@@ -11,6 +11,7 @@ config global
 	option when_chnroute_default_dns 'direct'
 	option tcp_proxy_mode 'chnroute'
 	option udp_proxy_mode 'chnroute'
+	option chinadns_ng_default_tag 'smart'
 	option localhost_tcp_proxy_mode 'default'
 	option localhost_udp_proxy_mode 'default'
 	option acl_enable '0'

luci-app-passwall/root/usr/share/passwall/app.sh

@@ -485,7 +485,7 @@ run_chinadns_ng() {
 
 	echolog "  | - (chinadns-ng) 最高支持4级域名过滤..."
 
-	local _default_tag
+	local _default_tag=$(config_t_get global chinadns_ng_default_tag smart)
 	local _extra_param=""
 	[ -n "$_chnlist" ] && {
 		[ -s "${RULES_PATH}/chnlist" ] && {
@@ -510,7 +510,7 @@ run_chinadns_ng() {
 		#当只有使用gfwlist模式时设置默认DNS为本地直连
 		[ -n "$_gfwlist" ] && [ -z "$_chnlist" ] && _default_tag="chn"
 	}
-	[ -n "$_default_tag" ] && _extra_param="${_extra_param} -d ${_default_tag}"
+	[ -n "$_default_tag" ] && [ "$_default_tag" != "smart" ] && _extra_param="${_extra_param} -d ${_default_tag}"
 
 	_log_path="/dev/null"
 	ln_run "$(first_type chinadns-ng)" chinadns-ng "$_log_path" -v -b 127.0.0.1 -l "${_listen_port}" ${_dns_china:+-c "${_dns_china}"} ${_dns_trust:+-t "${_dns_trust}"} ${_extra_param} -f ${_no_ipv6_rules:+-N=${_no_ipv6_rules}}