Add api command

cmd/sing-box/cmd_api_tailscale_exit_node_set.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"github.com/sagernet/sing-box/daemon"
+
+	"github.com/spf13/cobra"
+)
+
+var commandAPITailscaleExitNodeSet = &cobra.Command{
+	Use:   "set <peer>",
+	Short: "Use a Tailscale peer as exit node",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return runAPITailscaleExitNodeSet(args[0])
+	},
+}
+
+func init() {
+	commandAPITailscaleExitNode.AddCommand(commandAPITailscaleExitNodeSet)
+}
+
+func runAPITailscaleExitNodeSet(selector string) error {
+	clientConn, client, err := createAPIClient()
+	if err != nil {
+		return err
+	}
+	defer clientConn.Close()
+	endpoint, err := fetchTailscaleEndpoint(client)
+	if err != nil {
+		return err
+	}
+	entry, err := resolveTailscalePeer(tailscalePeerEntries(endpoint), selector)
+	if err != nil {
+		return err
+	}
+	_, err = client.SetTailscaleExitNode(globalCtx, &daemon.SetTailscaleExitNodeRequest{
+		EndpointTag: endpoint.GetEndpointTag(),
+		StableID:    entry.peer.GetStableID(),
+	})
+	return err
+}