Added basic routes functionality

app.go

@@ -1,12 +1,15 @@
 package headscale
 
 import (
+	"encoding/json"
 	"fmt"
 	"log"
 	"os"
 	"sync"
 
 	"github.com/gin-gonic/gin"
+	"github.com/jinzhu/gorm/dialects/postgres"
+	"inet.af/netaddr"
 	"tailscale.com/tailcfg"
 	"tailscale.com/wgengine/wgcfg"
 )
@@ -113,3 +116,72 @@ func (h *Headscale) RegisterMachine(key string, namespace string) error {
 	fmt.Println("Machine registered 🎉")
 	return nil
 }
+
+func (h *Headscale) ListNodeRoutes(namespace string, nodeName string) error {
+	m, err := h.GetMachine(namespace, nodeName)
+	if err != nil {
+		return err
+	}
+
+	hi, err := m.GetHostInfo()
+	if err != nil {
+		return err
+	}
+	fmt.Println(hi.RoutableIPs)
+	return nil
+}
+
+func (h *Headscale) EnableNodeRoute(namespace string, nodeName string, routeStr string) error {
+	m, err := h.GetMachine(namespace, nodeName)
+	if err != nil {
+		return err
+	}
+	hi, err := m.GetHostInfo()
+	if err != nil {
+		return err
+	}
+	route, err := netaddr.ParseIPPrefix(routeStr)
+	if err != nil {
+		return err
+	}
+
+	for _, rIP := range hi.RoutableIPs {
+		if rIP == route {
+			db, err := h.db()
+			if err != nil {
+				log.Printf("Cannot open DB: %s", err)
+				return err
+			}
+			defer db.Close()
+			routes, _ := json.Marshal([]string{routeStr}) // TODO: only one for the time being, so overwriting the rest
+			m.EnabledRoutes = postgres.Jsonb{RawMessage: json.RawMessage(routes)}
+			db.Save(&m)
+			db.Close()
+
+			peers, _ := h.getPeers(*m)
+			h.pollMu.Lock()
+			for _, p := range *peers {
+				if pUp, ok := h.clientsPolling[uint64(p.ID)]; ok {
+					pUp <- []byte{}
+				} else {
+				}
+			}
+			h.pollMu.Unlock()
+			return nil
+		}
+	}
+	return fmt.Errorf("Could not find routable range")
+
+}
+
+func eqCIDRs(a, b []netaddr.IPPrefix) bool {
+	if len(a) != len(b) || ((a == nil) != (b == nil)) {
+		return false
+	}
+	for i, v := range a {
+		if v != b[i] {
+			return false
+		}
+	}
+	return true
+}