fix(panel): use the hosting node address for WireGuard client configs (#5679)

* fix(panel): use the hosting node address for WireGuard client configs

The clients page rendered a node-managed WireGuard inbound's config with the
master panel's host in Endpoint instead of the hosting node's address, so the
copied/QR config pointed at the wrong server. The subscription path already
resolves this via resolveInboundAddress; the UI generator did not.

Expose the share-host resolution inputs (node address, listen, share-address
strategy/address) on InboundOption and route buildWireguardClientConfig through
the same canonical resolver the inbounds-page share links use, extracted as
resolveShareHost. This also brings local inbounds with a shareable listen or a
listen/custom share strategy into parity with the subscription Endpoint; the
common listen=0.0.0.0 case still falls back to the panel host.

* fix(frontend): keep a raw fallback host and refresh node-fed inbound options

Code review of the WireGuard node-endpoint change surfaced two gaps.
resolveShareHost normalized its last-resort fallbackHostname, so a panel
reached via a hostname the share-host grammar rejects (underscore label,
trailing-dot FQDN) emitted a broken 'Endpoint = :51820'; the fallback now
stays verbatim when normalization empties it. Node mutations only
invalidated the nodes query, leaving the staleTime-Infinity inbound
options cache serving an edited node address until the sync job
broadcast (never, for disabled/offline nodes); they now invalidate the
options key too.

Also folds the ShareHostFields projections into direct structural passes,
elides the default node shareAddrStrategy so omitempty drops it, and
replaces the nullable node-address scan with COALESCE.

---------

Co-authored-by: STRENCH0 <17428017+STRENCH0@users.noreply.github.com>
Co-authored-by: Sanaei <ho3ein.sanaei@gmail.com>

internal/web/service/inbound.go

@@ -305,24 +305,39 @@ type InboundOption struct {
 	// Hosting node; nil for this panel's own inbounds. Lets the clients
 	// page map a node filter onto inbound IDs (#4997).
 	NodeId *int `json:"nodeId,omitempty"`
+	// Share-host resolution inputs, mirroring the subscription's
+	// resolveInboundAddress so the clients page renders a node-managed WireGuard
+	// Endpoint that points at the node, not the master panel. NodeAddress is the
+	// hosting node's externally reachable address (empty for this panel's own
+	// inbounds); Listen and ShareAddrStrategy/ShareAddr feed the same
+	// node→listen→custom fallback the share/QR links already use.
+	NodeAddress       string `json:"nodeAddress,omitempty"`
+	Listen            string `json:"listen,omitempty"`
+	ShareAddr         string `json:"shareAddr,omitempty"`
+	ShareAddrStrategy string `json:"shareAddrStrategy,omitempty"`
 }
 
 func (s *InboundService) GetInboundOptions(userId int) ([]InboundOption, error) {
 	db := database.GetDB()
 	var rows []struct {
-		Id             int    `gorm:"column:id"`
-		Remark         string `gorm:"column:remark"`
-		Tag            string `gorm:"column:tag"`
-		Protocol       string `gorm:"column:protocol"`
-		Port           int    `gorm:"column:port"`
-		StreamSettings string `gorm:"column:stream_settings"`
-		Settings       string `gorm:"column:settings"`
-		NodeId         *int   `gorm:"column:node_id"`
+		Id                int    `gorm:"column:id"`
+		Remark            string `gorm:"column:remark"`
+		Tag               string `gorm:"column:tag"`
+		Protocol          string `gorm:"column:protocol"`
+		Port              int    `gorm:"column:port"`
+		StreamSettings    string `gorm:"column:stream_settings"`
+		Settings          string `gorm:"column:settings"`
+		Listen            string `gorm:"column:listen"`
+		ShareAddr         string `gorm:"column:share_addr"`
+		ShareAddrStrategy string `gorm:"column:share_addr_strategy"`
+		NodeId            *int   `gorm:"column:node_id"`
+		NodeAddress       string `gorm:"column:node_address"`
 	}
 	err := db.Table("inbounds").
-		Select("id, remark, tag, protocol, port, stream_settings, settings, node_id").
-		Where("user_id = ?", userId).
-		Order("id ASC").
+		Select("inbounds.id, inbounds.remark, inbounds.tag, inbounds.protocol, inbounds.port, inbounds.stream_settings, inbounds.settings, inbounds.listen, inbounds.share_addr, inbounds.share_addr_strategy, inbounds.node_id, COALESCE(nodes.address, '') AS node_address").
+		Joins("LEFT JOIN nodes ON nodes.id = inbounds.node_id").
+		Where("inbounds.user_id = ?", userId).
+		Order("inbounds.id ASC").
 		Scan(&rows).Error
 	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
 		return nil, err
@@ -330,18 +345,26 @@ func (s *InboundService) GetInboundOptions(userId int) ([]InboundOption, error)
 	out := make([]InboundOption, 0, len(rows))
 	for _, r := range rows {
 		wgPublicKey, wgMtu, wgDns := inboundWireguardHints(r.Protocol, r.Settings)
+		shareAddrStrategy := r.ShareAddrStrategy
+		if shareAddrStrategy == "node" {
+			shareAddrStrategy = ""
+		}
 		out = append(out, InboundOption{
-			Id:             r.Id,
-			Remark:         r.Remark,
-			Tag:            r.Tag,
-			Protocol:       r.Protocol,
-			Port:           r.Port,
-			TlsFlowCapable: inboundCanEnableTlsFlow(r.Protocol, r.StreamSettings, r.Settings),
-			SsMethod:       inboundShadowsocksMethod(r.Protocol, r.Settings),
-			WgPublicKey:    wgPublicKey,
-			WgMtu:          wgMtu,
-			WgDns:          wgDns,
-			NodeId:         r.NodeId,
+			Id:                r.Id,
+			Remark:            r.Remark,
+			Tag:               r.Tag,
+			Protocol:          r.Protocol,
+			Port:              r.Port,
+			TlsFlowCapable:    inboundCanEnableTlsFlow(r.Protocol, r.StreamSettings, r.Settings),
+			SsMethod:          inboundShadowsocksMethod(r.Protocol, r.Settings),
+			WgPublicKey:       wgPublicKey,
+			WgMtu:             wgMtu,
+			WgDns:             wgDns,
+			NodeId:            r.NodeId,
+			NodeAddress:       r.NodeAddress,
+			Listen:            r.Listen,
+			ShareAddr:         r.ShareAddr,
+			ShareAddrStrategy: shareAddrStrategy,
 		})
 	}
 	return out, nil

internal/web/service/inbound_options_node_address_test.go

@@ -0,0 +1,89 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/mhsanaei/3x-ui/v3/internal/database"
+	"github.com/mhsanaei/3x-ui/v3/internal/database/model"
+)
+
+// TestGetInboundOptions_NodeAddress verifies that a node-managed inbound carries
+// its hosting node's externally reachable address, while this panel's own
+// inbounds report an empty NodeAddress. The clients page uses it as the
+// WireGuard endpoint host so a copied config points at the node, not the master.
+func TestGetInboundOptions_NodeAddress(t *testing.T) {
+	setupConflictDB(t)
+
+	node := &model.Node{Name: "de-fra-1", Address: "node.example.net", Port: 2053, Enable: true}
+	if err := database.GetDB().Create(node).Error; err != nil {
+		t.Fatalf("create node: %v", err)
+	}
+
+	nodeInbound := &model.Inbound{
+		UserId:   1,
+		Tag:      "in-51820-udp",
+		Enable:   true,
+		Listen:   "0.0.0.0",
+		Port:     51820,
+		Protocol: model.WireGuard,
+		Settings: `{"clients":[],"secretKey":"QGVlb2dXc1ZTWGw0ZXBzZndsWmtMaUM5MUlNYjBHWFdYbz0="}`,
+		NodeID:   &node.Id,
+	}
+	localInbound := &model.Inbound{
+		UserId:            1,
+		Tag:               "in-443-tcp",
+		Enable:            true,
+		Listen:            "0.0.0.0",
+		Port:              443,
+		Protocol:          model.VLESS,
+		StreamSettings:    `{"network":"tcp"}`,
+		Settings:          `{"clients":[]}`,
+		ShareAddrStrategy: "custom",
+		ShareAddr:         "vpn.example.com",
+	}
+	if err := database.GetDB().Create(nodeInbound).Error; err != nil {
+		t.Fatalf("create node inbound: %v", err)
+	}
+	if err := database.GetDB().Create(localInbound).Error; err != nil {
+		t.Fatalf("create local inbound: %v", err)
+	}
+
+	svc := &InboundService{}
+	options, err := svc.GetInboundOptions(1)
+	if err != nil {
+		t.Fatalf("GetInboundOptions: %v", err)
+	}
+
+	byID := make(map[int]InboundOption, len(options))
+	for _, o := range options {
+		byID[o.Id] = o
+	}
+
+	got, ok := byID[nodeInbound.Id]
+	if !ok {
+		t.Fatalf("node inbound %d missing from options", nodeInbound.Id)
+	}
+	if got.NodeAddress != "node.example.net" {
+		t.Fatalf("node inbound NodeAddress = %q, want node.example.net", got.NodeAddress)
+	}
+	if got.Listen != "0.0.0.0" {
+		t.Fatalf("node inbound Listen = %q, want 0.0.0.0", got.Listen)
+	}
+	if got.ShareAddrStrategy != "" {
+		t.Fatalf("node inbound ShareAddrStrategy = %q, want empty (the default node strategy is elided so omitempty drops it)", got.ShareAddrStrategy)
+	}
+
+	local, ok := byID[localInbound.Id]
+	if !ok {
+		t.Fatalf("local inbound %d missing from options", localInbound.Id)
+	}
+	if local.NodeAddress != "" {
+		t.Fatalf("local inbound NodeAddress = %q, want empty", local.NodeAddress)
+	}
+	if local.ShareAddrStrategy != "custom" {
+		t.Fatalf("local inbound ShareAddrStrategy = %q, want custom", local.ShareAddrStrategy)
+	}
+	if local.ShareAddr != "vpn.example.com" {
+		t.Fatalf("local inbound ShareAddr = %q, want vpn.example.com", local.ShareAddr)
+	}
+}