From 6f8e253dec926ce324cceba16c7d2d6eb7a46b9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=A3=8E=E6=89=87=E6=BB=91=E7=BF=94=E7=BF=BC?=
<Fangliding.fshxy@outlook.com>
Date: Fri, 21 Mar 2025 08:18:59 +0800
Subject: [PATCH] DNS: Add `tag` for DnsServerObject (#4515)
Closes https://github.com/XTLS/Xray-core/issues/4505
---
app/dns/config.pb.go | 123 ++++++++++++++++++++++--------------------
app/dns/config.proto | 1 +
app/dns/nameserver.go | 10 ++++
infra/conf/dns.go | 4 ++
4 files changed, 81 insertions(+), 57 deletions(-)
diff --git a/app/dns/config.pb.go b/app/dns/config.pb.go
index 33dc904b..7f6888a3 100644
--- a/app/dns/config.pb.go
+++ b/app/dns/config.pb.go
@@ -136,6 +136,7 @@ type NameServer struct {
OriginalRules []*NameServer_OriginalRule `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
QueryStrategy QueryStrategy `protobuf:"varint,7,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
AllowUnexpectedIPs bool `protobuf:"varint,8,opt,name=allowUnexpectedIPs,proto3" json:"allowUnexpectedIPs,omitempty"`
+ Tag string `protobuf:"bytes,9,opt,name=tag,proto3" json:"tag,omitempty"`
}
func (x *NameServer) Reset() {
@@ -224,6 +225,13 @@ func (x *NameServer) GetAllowUnexpectedIPs() bool {
return false
}
+func (x *NameServer) GetTag() string {
+ if x != nil {
+ return x.Tag
+ }
+ return ""
+}
+
type Config struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -516,7 +524,7 @@ var file_app_dns_config_proto_rawDesc = []byte{
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@@ -545,63 +553,64 @@ var file_app_dns_config_proto_rawDesc = []byte{
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}
var (
diff --git a/app/dns/config.proto b/app/dns/config.proto
index ea4d5e31..03c8a333 100644
--- a/app/dns/config.proto
+++ b/app/dns/config.proto
@@ -29,6 +29,7 @@ message NameServer {
repeated OriginalRule original_rules = 4;
QueryStrategy query_strategy = 7;
bool allowUnexpectedIPs = 8;
+ string tag = 9;
}
enum DomainMatchingType {
diff --git a/app/dns/nameserver.go b/app/dns/nameserver.go
index e1f902bf..d46c00b7 100644
--- a/app/dns/nameserver.go
+++ b/app/dns/nameserver.go
@@ -9,6 +9,7 @@ import (
"github.com/xtls/xray-core/app/router"
"github.com/xtls/xray-core/common/errors"
"github.com/xtls/xray-core/common/net"
+ "github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/common/strmatcher"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/features/dns"
@@ -31,6 +32,7 @@ type Client struct {
domains []string
expectIPs []*router.GeoIPMatcher
allowUnexpectedIPs bool
+ tag string
}
var errExpectedIPNonMatch = errors.New("expectIPs not match")
@@ -168,6 +170,7 @@ func NewClient(
client.domains = rules
client.expectIPs = matchers
client.allowUnexpectedIPs = ns.AllowUnexpectedIPs
+ client.tag = ns.Tag
return nil
})
return client, err
@@ -181,6 +184,13 @@ func (c *Client) Name() string {
// QueryIP sends DNS query to the name server with the client's IP.
func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption, disableCache bool) ([]net.IP, error) {
ctx, cancel := context.WithTimeout(ctx, 4*time.Second)
+ if len(c.tag) != 0 {
+ content := session.InboundFromContext(ctx)
+ errors.LogDebug(ctx, "DNS: client override tag from ", content.Tag, " to ", c.tag)
+ // create a new context to override the tag
+ // do not direct set *content.Tag, it might be used by other clients
+ ctx = session.ContextWithInbound(ctx, &session.Inbound{Tag: c.tag})
+ }
ips, err := c.server.QueryIP(ctx, domain, c.clientIP, option, disableCache)
cancel()
diff --git a/infra/conf/dns.go b/infra/conf/dns.go
index b2289026..f2e91573 100644
--- a/infra/conf/dns.go
+++ b/infra/conf/dns.go
@@ -20,6 +20,7 @@ type NameServerConfig struct {
ExpectIPs StringList `json:"expectIps"`
QueryStrategy string `json:"queryStrategy"`
AllowUnexpectedIPs bool `json:"allowUnexpectedIps"`
+ Tag string `json:"tag"`
}
func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
@@ -38,6 +39,7 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
ExpectIPs StringList `json:"expectIps"`
QueryStrategy string `json:"queryStrategy"`
AllowUnexpectedIPs bool `json:"allowUnexpectedIps"`
+ Tag string `json:"tag"`
}
if err := json.Unmarshal(data, &advanced); err == nil {
c.Address = advanced.Address
@@ -48,6 +50,7 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
c.ExpectIPs = advanced.ExpectIPs
c.QueryStrategy = advanced.QueryStrategy
c.AllowUnexpectedIPs = advanced.AllowUnexpectedIPs
+ c.Tag = advanced.Tag
return nil
}
@@ -121,6 +124,7 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
OriginalRules: originalRules,
QueryStrategy: resolveQueryStrategy(c.QueryStrategy),
AllowUnexpectedIPs: c.AllowUnexpectedIPs,
+ Tag: c.Tag,
}, nil
}