From 874aa4277d6f85b3f007015f38164a63ebe7866e Mon Sep 17 00:00:00 2001
From: Juan Font <juanfontalonso@gmail.com>
Date: Sat, 3 Jul 2021 12:01:19 +0200
Subject: [PATCH 1/3] Minor changes in the README.md

---
 README.md | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 5a37719..1429827 100644
--- a/README.md
+++ b/README.md
@@ -10,28 +10,27 @@ Tailscale is [a modern VPN](https://tailscale.com/) built on top of [Wireguard](
 
 Everything in Tailscale is Open Source, except the GUI clients for proprietary OS (Windows and macOS/iOS), and the 'coordination/control server'.
 
-The control server works as an exchange point of cryptographic public keys for the nodes in the Tailscale network. It also assigns the IP addresses of the clients, creates the boundaries between each user, enables sharing machines between users, and exposes the advertised routes of your nodes.
+The control server works as an exchange point of Wireguard public keys for the nodes in the Tailscale network. It also assigns the IP addresses of the clients, creates the boundaries between each user, enables sharing machines between users, and exposes the advertised routes of your nodes.
 
 Headscale implements this coordination server.
 
 ## Status
 
-- [x] Basic functionality (nodes can communicate with each other)
+- [x] Base functionality (nodes can communicate with each other)
 - [x] Node registration through the web flow
 - [x] Network changes are relied to the nodes
-- [x] ~~Multiuser~~ Namespace support
-- [x] Basic routing (advertise & accept)
-- [ ] Share nodes between ~~users~~ namespaces
-- [x] Node registration via pre-auth keys (including reusable keys and ephemeral node support)
+- [x] ~~Multiuser/multitailnet~~ Namespace support
+- [x] Routing (advertise & accept, including exit nodes)
+- [x] Node registration via pre-auth keys (including reusable keys, and ephemeral node support)
 - [X] JSON-formatted output
-- [ ] ACLs
+- [ ] (✨ WIP) ACLs
+- [ ] Share nodes between ~~users~~ namespaces 
 - [ ] DNS
 
-... and probably lots of stuff missing
 
 ## Roadmap 🤷
 
-Basic multiuser support (multinamespace, actually) is now implemented. No node sharing or ACLs between namespaces yet though...
+We are now working on adding ACLs https://tailscale.com/kb/1018/acls
 
 Suggestions/PRs welcomed!
 

From 31ea67bcaf7fb88e9226f0b7b85794f79191f62e Mon Sep 17 00:00:00 2001
From: Juan Font <juanfontalonso@gmail.com>
Date: Sat, 3 Jul 2021 16:10:22 +0200
Subject: [PATCH 2/3] Minor addenda to README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 1429827..d056b11 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Join the chat at https://gitter.im/headscale-dev/community](https://badges.gitter.im/headscale-dev/community.svg)](https://gitter.im/headscale-dev/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) ![ci](https://github.com/juanfont/headscale/actions/workflows/test.yml/badge.svg)
 
-An open source implementation of the Tailscale coordination server.
+An open source, self-hosted implementation of the Tailscale coordination server.
 
 ## Overview
 

From ff9d99b9ea49818c3c432c8e197dd811d9adf651 Mon Sep 17 00:00:00 2001
From: Juan Font Alonso <juanfontalonso@gmail.com>
Date: Sun, 4 Jul 2021 21:40:46 +0200
Subject: [PATCH 3/3] Use gorm connection pool

---
 api.go               | 28 ++++++++------------------
 app.go               | 11 ++++-------
 app_test.go          |  5 +++++
 cli.go               | 11 +++--------
 cli_test.go          |  7 +------
 db.go                | 23 +++++++++-------------
 machine.go           |  7 +------
 machine_test.go      |  7 +------
 namespaces.go        | 47 +++++++-------------------------------------
 namespaces_test.go   |  6 +-----
 preauth_keys.go      | 25 ++++-------------------
 preauth_keys_test.go | 18 +++--------------
 routes.go            |  9 +--------
 routes_test.go       |  7 +------
 utils.go             |  6 +-----
 15 files changed, 50 insertions(+), 167 deletions(-)

diff --git a/api.go b/api.go
index 92501a4..8629573 100644
--- a/api.go
+++ b/api.go
@@ -75,15 +75,8 @@ func (h *Headscale) RegistrationHandler(c *gin.Context) {
 		return
 	}
 
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		c.String(http.StatusInternalServerError, ":(")
-		return
-	}
-
 	var m Machine
-	if result := db.First(&m, "machine_key = ?", mKey.HexString()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+	if result := h.db.First(&m, "machine_key = ?", mKey.HexString()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 		log.Println("New Machine!")
 		m = Machine{
 			Expiry:     &req.Expiry,
@@ -91,14 +84,14 @@ func (h *Headscale) RegistrationHandler(c *gin.Context) {
 			Name:       req.Hostinfo.Hostname,
 			NodeKey:    wgkey.Key(req.NodeKey).HexString(),
 		}
-		if err := db.Create(&m).Error; err != nil {
+		if err := h.db.Create(&m).Error; err != nil {
 			log.Printf("Could not create row: %s", err)
 			return
 		}
 	}
 
 	if !m.Registered && req.Auth.AuthKey != "" {
-		h.handleAuthKey(c, db, mKey, req, m)
+		h.handleAuthKey(c, h.db, mKey, req, m)
 		return
 	}
 
@@ -138,7 +131,7 @@ func (h *Headscale) RegistrationHandler(c *gin.Context) {
 	if m.NodeKey == wgkey.Key(req.OldNodeKey).HexString() {
 		log.Printf("[%s] We have the OldNodeKey in the database. This is a key refresh", m.Name)
 		m.NodeKey = wgkey.Key(req.NodeKey).HexString()
-		db.Save(&m)
+		h.db.Save(&m)
 
 		resp.AuthURL = ""
 		resp.User = *m.Namespace.toUser()
@@ -204,13 +197,8 @@ func (h *Headscale) PollNetMapHandler(c *gin.Context) {
 		return
 	}
 
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return
-	}
 	var m Machine
-	if result := db.First(&m, "machine_key = ?", mKey.HexString()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+	if result := h.db.First(&m, "machine_key = ?", mKey.HexString()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 		log.Printf("Ignoring request, cannot find machine with key %s", mKey.HexString())
 		return
 	}
@@ -234,7 +222,7 @@ func (h *Headscale) PollNetMapHandler(c *gin.Context) {
 		m.Endpoints = datatypes.JSON(endpoints)
 		m.LastSeen = &now
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	pollData := make(chan []byte, 1)
 	update := make(chan []byte, 1)
@@ -303,7 +291,7 @@ func (h *Headscale) PollNetMapHandler(c *gin.Context) {
 			}
 			now := time.Now().UTC()
 			m.LastSeen = &now
-			db.Save(&m)
+			h.db.Save(&m)
 			return true
 
 		case <-update:
@@ -322,7 +310,7 @@ func (h *Headscale) PollNetMapHandler(c *gin.Context) {
 			log.Printf("[%s] The client has closed the connection", m.Name)
 			now := time.Now().UTC()
 			m.LastSeen = &now
-			db.Save(&m)
+			h.db.Save(&m)
 			h.pollMu.Lock()
 			cancelKeepAlive <- []byte{}
 			delete(h.clientsPolling, m.ID)
diff --git a/app.go b/app.go
index 0cdc310..8ff6029 100644
--- a/app.go
+++ b/app.go
@@ -12,6 +12,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"golang.org/x/crypto/acme/autocert"
+	"gorm.io/gorm"
 	"tailscale.com/tailcfg"
 	"tailscale.com/types/wgkey"
 )
@@ -43,6 +44,7 @@ type Config struct {
 // Headscale represents the base app of the service
 type Headscale struct {
 	cfg        Config
+	db         *gorm.DB
 	dbString   string
 	dbType     string
 	dbDebug    bool
@@ -87,6 +89,7 @@ func NewHeadscale(cfg Config) (*Headscale, error) {
 	if err != nil {
 		return nil, err
 	}
+
 	h.clientsPolling = make(map[uint64]chan []byte)
 	return &h, nil
 }
@@ -107,12 +110,6 @@ func (h *Headscale) ExpireEphemeralNodes(milliSeconds int64) {
 }
 
 func (h *Headscale) expireEphemeralNodesWorker() {
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return
-	}
-
 	namespaces, err := h.ListNamespaces()
 	if err != nil {
 		log.Printf("Error listing namespaces: %s", err)
@@ -127,7 +124,7 @@ func (h *Headscale) expireEphemeralNodesWorker() {
 		for _, m := range *machines {
 			if m.AuthKey != nil && m.LastSeen != nil && m.AuthKey.Ephemeral && time.Now().After(m.LastSeen.Add(h.cfg.EphemeralNodeInactivityTimeout)) {
 				log.Printf("[%s] Ephemeral client removed from database\n", m.Name)
-				err = db.Unscoped().Delete(m).Error
+				err = h.db.Unscoped().Delete(m).Error
 				if err != nil {
 					log.Printf("[%s] 🤮 Cannot delete ephemeral machine from the database: %s", m.Name, err)
 				}
diff --git a/app_test.go b/app_test.go
index 6323655..ad63333 100644
--- a/app_test.go
+++ b/app_test.go
@@ -47,4 +47,9 @@ func (s *Suite) ResetDB(c *check.C) {
 	if err != nil {
 		c.Fatal(err)
 	}
+	db, err := h.openDB()
+	if err != nil {
+		c.Fatal(err)
+	}
+	h.db = db
 }
diff --git a/cli.go b/cli.go
index 2ab1061..9c5b66e 100644
--- a/cli.go
+++ b/cli.go
@@ -2,7 +2,6 @@ package headscale
 
 import (
 	"errors"
-	"log"
 
 	"gorm.io/gorm"
 	"tailscale.com/types/wgkey"
@@ -18,13 +17,9 @@ func (h *Headscale) RegisterMachine(key string, namespace string) (*Machine, err
 	if err != nil {
 		return nil, err
 	}
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
+
 	m := Machine{}
-	if result := db.First(&m, "machine_key = ?", mKey.HexString()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+	if result := h.db.First(&m, "machine_key = ?", mKey.HexString()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 		return nil, errors.New("Machine not found")
 	}
 
@@ -40,6 +35,6 @@ func (h *Headscale) RegisterMachine(key string, namespace string) (*Machine, err
 	m.NamespaceID = ns.ID
 	m.Registered = true
 	m.RegisterMethod = "cli"
-	db.Save(&m)
+	h.db.Save(&m)
 	return &m, nil
 }
diff --git a/cli_test.go b/cli_test.go
index 3268e1a..9616b4a 100644
--- a/cli_test.go
+++ b/cli_test.go
@@ -8,11 +8,6 @@ func (s *Suite) TestRegisterMachine(c *check.C) {
 	n, err := h.CreateNamespace("test")
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
-
 	m := Machine{
 		ID:          0,
 		MachineKey:  "8ce002a935f8c394e55e78fbbb410576575ff8ec5cfa2e627e4b807f1be15b0e",
@@ -21,7 +16,7 @@ func (s *Suite) TestRegisterMachine(c *check.C) {
 		Name:        "testmachine",
 		NamespaceID: n.ID,
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	_, err = h.GetMachine("test", "testmachine")
 	c.Assert(err, check.IsNil)
diff --git a/db.go b/db.go
index d7ce66e..99d45f8 100644
--- a/db.go
+++ b/db.go
@@ -17,10 +17,12 @@ type KV struct {
 }
 
 func (h *Headscale) initDB() error {
-	db, err := h.db()
+	db, err := h.openDB()
 	if err != nil {
 		return err
 	}
+	h.db = db
+
 	if h.dbType == "postgres" {
 		db.Exec("create extension if not exists \"uuid-ossp\";")
 	}
@@ -45,7 +47,7 @@ func (h *Headscale) initDB() error {
 	return err
 }
 
-func (h *Headscale) db() (*gorm.DB, error) {
+func (h *Headscale) openDB() (*gorm.DB, error) {
 	var db *gorm.DB
 	var err error
 	switch h.dbType {
@@ -69,12 +71,8 @@ func (h *Headscale) db() (*gorm.DB, error) {
 }
 
 func (h *Headscale) getValue(key string) (string, error) {
-	db, err := h.db()
-	if err != nil {
-		return "", err
-	}
 	var row KV
-	if result := db.First(&row, "key = ?", key); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+	if result := h.db.First(&row, "key = ?", key); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 		return "", errors.New("not found")
 	}
 	return row.Value, nil
@@ -85,16 +83,13 @@ func (h *Headscale) setValue(key string, value string) error {
 		Key:   key,
 		Value: value,
 	}
-	db, err := h.db()
-	if err != nil {
-		return err
-	}
-	_, err = h.getValue(key)
+
+	_, err := h.getValue(key)
 	if err == nil {
-		db.Model(&kv).Where("key = ?", key).Update("value", value)
+		h.db.Model(&kv).Where("key = ?", key).Update("value", value)
 		return nil
 	}
 
-	db.Create(kv)
+	h.db.Create(kv)
 	return nil
 }
diff --git a/machine.go b/machine.go
index 59dbf16..1892219 100644
--- a/machine.go
+++ b/machine.go
@@ -154,14 +154,9 @@ func (m Machine) toNode() (*tailcfg.Node, error) {
 }
 
 func (h *Headscale) getPeers(m Machine) (*[]*tailcfg.Node, error) {
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
 
 	machines := []Machine{}
-	if err = db.Where("namespace_id = ? AND machine_key <> ? AND registered",
+	if err := h.db.Where("namespace_id = ? AND machine_key <> ? AND registered",
 		m.NamespaceID, m.MachineKey).Find(&machines).Error; err != nil {
 		log.Printf("Error accessing db: %s", err)
 		return nil, err
diff --git a/machine_test.go b/machine_test.go
index 25c9e95..d9a472c 100644
--- a/machine_test.go
+++ b/machine_test.go
@@ -11,11 +11,6 @@ func (s *Suite) TestGetMachine(c *check.C) {
 	pak, err := h.CreatePreAuthKey(n.Name, false, false, nil)
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
-
 	_, err = h.GetMachine("test", "testmachine")
 	c.Assert(err, check.NotNil)
 
@@ -30,7 +25,7 @@ func (s *Suite) TestGetMachine(c *check.C) {
 		RegisterMethod: "authKey",
 		AuthKeyID:      uint(pak.ID),
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	m1, err := h.GetMachine("test", "testmachine")
 	c.Assert(err, check.IsNil)
diff --git a/namespaces.go b/namespaces.go
index afdbb9f..ddfbee9 100644
--- a/namespaces.go
+++ b/namespaces.go
@@ -25,18 +25,12 @@ type Namespace struct {
 // CreateNamespace creates a new Namespace. Returns error if could not be created
 // or another namespace already exists
 func (h *Headscale) CreateNamespace(name string) (*Namespace, error) {
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
-
 	n := Namespace{}
-	if err := db.Where("name = ?", name).First(&n).Error; err == nil {
+	if err := h.db.Where("name = ?", name).First(&n).Error; err == nil {
 		return nil, errorNamespaceExists
 	}
 	n.Name = name
-	if err := db.Create(&n).Error; err != nil {
+	if err := h.db.Create(&n).Error; err != nil {
 		log.Printf("Could not create row: %s", err)
 		return nil, err
 	}
@@ -46,12 +40,6 @@ func (h *Headscale) CreateNamespace(name string) (*Namespace, error) {
 // DestroyNamespace destroys a Namespace. Returns error if the Namespace does
 // not exist or if there are machines associated with it.
 func (h *Headscale) DestroyNamespace(name string) error {
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return err
-	}
-
 	n, err := h.GetNamespace(name)
 	if err != nil {
 		return errorNamespaceNotFound
@@ -65,7 +53,7 @@ func (h *Headscale) DestroyNamespace(name string) error {
 		return errorNamespaceNotEmpty
 	}
 
-	if result := db.Unscoped().Delete(&n); result.Error != nil {
+	if result := h.db.Unscoped().Delete(&n); result.Error != nil {
 		return err
 	}
 
@@ -74,14 +62,8 @@ func (h *Headscale) DestroyNamespace(name string) error {
 
 // GetNamespace fetches a namespace by name
 func (h *Headscale) GetNamespace(name string) (*Namespace, error) {
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
-
 	n := Namespace{}
-	if result := db.First(&n, "name = ?", name); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+	if result := h.db.First(&n, "name = ?", name); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 		return nil, errorNamespaceNotFound
 	}
 	return &n, nil
@@ -89,13 +71,8 @@ func (h *Headscale) GetNamespace(name string) (*Namespace, error) {
 
 // ListNamespaces gets all the existing namespaces
 func (h *Headscale) ListNamespaces() (*[]Namespace, error) {
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
 	namespaces := []Namespace{}
-	if err := db.Find(&namespaces).Error; err != nil {
+	if err := h.db.Find(&namespaces).Error; err != nil {
 		return nil, err
 	}
 	return &namespaces, nil
@@ -107,14 +84,9 @@ func (h *Headscale) ListMachinesInNamespace(name string) (*[]Machine, error) {
 	if err != nil {
 		return nil, err
 	}
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
 
 	machines := []Machine{}
-	if err := db.Preload("AuthKey").Where(&Machine{NamespaceID: n.ID}).Find(&machines).Error; err != nil {
+	if err := h.db.Preload("AuthKey").Where(&Machine{NamespaceID: n.ID}).Find(&machines).Error; err != nil {
 		return nil, err
 	}
 	return &machines, nil
@@ -126,13 +98,8 @@ func (h *Headscale) SetMachineNamespace(m *Machine, namespaceName string) error
 	if err != nil {
 		return err
 	}
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return err
-	}
 	m.NamespaceID = n.ID
-	db.Save(&m)
+	h.db.Save(&m)
 	return nil
 }
 
diff --git a/namespaces_test.go b/namespaces_test.go
index fd6045e..9168b20 100644
--- a/namespaces_test.go
+++ b/namespaces_test.go
@@ -30,10 +30,6 @@ func (s *Suite) TestDestroyNamespaceErrors(c *check.C) {
 	pak, err := h.CreatePreAuthKey(n.Name, false, false, nil)
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
 	m := Machine{
 		ID:             0,
 		MachineKey:     "foo",
@@ -45,7 +41,7 @@ func (s *Suite) TestDestroyNamespaceErrors(c *check.C) {
 		RegisterMethod: "authKey",
 		AuthKeyID:      uint(pak.ID),
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	err = h.DestroyNamespace("test")
 	c.Assert(err, check.Equals, errorNamespaceNotEmpty)
diff --git a/preauth_keys.go b/preauth_keys.go
index f0346e6..7cffcea 100644
--- a/preauth_keys.go
+++ b/preauth_keys.go
@@ -4,7 +4,6 @@ import (
 	"crypto/rand"
 	"encoding/hex"
 	"errors"
-	"log"
 	"time"
 
 	"gorm.io/gorm"
@@ -34,12 +33,6 @@ func (h *Headscale) CreatePreAuthKey(namespaceName string, reusable bool, epheme
 		return nil, err
 	}
 
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
-
 	now := time.Now().UTC()
 	kstr, err := h.generateKey()
 	if err != nil {
@@ -55,7 +48,7 @@ func (h *Headscale) CreatePreAuthKey(namespaceName string, reusable bool, epheme
 		CreatedAt:   &now,
 		Expiration:  expiration,
 	}
-	db.Save(&k)
+	h.db.Save(&k)
 
 	return &k, nil
 }
@@ -66,14 +59,9 @@ func (h *Headscale) GetPreAuthKeys(namespaceName string) (*[]PreAuthKey, error)
 	if err != nil {
 		return nil, err
 	}
-	db, err := h.db()
-	if err != nil {
-		log.Printf("Cannot open DB: %s", err)
-		return nil, err
-	}
 
 	keys := []PreAuthKey{}
-	if err := db.Preload("Namespace").Where(&PreAuthKey{NamespaceID: n.ID}).Find(&keys).Error; err != nil {
+	if err := h.db.Preload("Namespace").Where(&PreAuthKey{NamespaceID: n.ID}).Find(&keys).Error; err != nil {
 		return nil, err
 	}
 	return &keys, nil
@@ -82,13 +70,8 @@ func (h *Headscale) GetPreAuthKeys(namespaceName string) (*[]PreAuthKey, error)
 // checkKeyValidity does the heavy lifting for validation of the PreAuthKey coming from a node
 // If returns no error and a PreAuthKey, it can be used
 func (h *Headscale) checkKeyValidity(k string) (*PreAuthKey, error) {
-	db, err := h.db()
-	if err != nil {
-		return nil, err
-	}
-
 	pak := PreAuthKey{}
-	if result := db.Preload("Namespace").First(&pak, "key = ?", k); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+	if result := h.db.Preload("Namespace").First(&pak, "key = ?", k); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 		return nil, errorAuthKeyNotFound
 	}
 
@@ -101,7 +84,7 @@ func (h *Headscale) checkKeyValidity(k string) (*PreAuthKey, error) {
 	}
 
 	machines := []Machine{}
-	if err := db.Preload("AuthKey").Where(&Machine{AuthKeyID: uint(pak.ID)}).Find(&machines).Error; err != nil {
+	if err := h.db.Preload("AuthKey").Where(&Machine{AuthKeyID: uint(pak.ID)}).Find(&machines).Error; err != nil {
 		return nil, err
 	}
 
diff --git a/preauth_keys_test.go b/preauth_keys_test.go
index 471e463..6f1369c 100644
--- a/preauth_keys_test.go
+++ b/preauth_keys_test.go
@@ -73,10 +73,6 @@ func (*Suite) TestAlreadyUsedKey(c *check.C) {
 	pak, err := h.CreatePreAuthKey(n.Name, false, false, nil)
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
 	m := Machine{
 		ID:             0,
 		MachineKey:     "foo",
@@ -88,7 +84,7 @@ func (*Suite) TestAlreadyUsedKey(c *check.C) {
 		RegisterMethod: "authKey",
 		AuthKeyID:      uint(pak.ID),
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	p, err := h.checkKeyValidity(pak.Key)
 	c.Assert(err, check.Equals, errorAuthKeyNotReusableAlreadyUsed)
@@ -102,10 +98,6 @@ func (*Suite) TestReusableBeingUsedKey(c *check.C) {
 	pak, err := h.CreatePreAuthKey(n.Name, true, false, nil)
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
 	m := Machine{
 		ID:             1,
 		MachineKey:     "foo",
@@ -117,7 +109,7 @@ func (*Suite) TestReusableBeingUsedKey(c *check.C) {
 		RegisterMethod: "authKey",
 		AuthKeyID:      uint(pak.ID),
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	p, err := h.checkKeyValidity(pak.Key)
 	c.Assert(err, check.IsNil)
@@ -143,10 +135,6 @@ func (*Suite) TestEphemeralKey(c *check.C) {
 	pak, err := h.CreatePreAuthKey(n.Name, false, true, nil)
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
 	now := time.Now()
 	m := Machine{
 		ID:             0,
@@ -160,7 +148,7 @@ func (*Suite) TestEphemeralKey(c *check.C) {
 		LastSeen:       &now,
 		AuthKeyID:      uint(pak.ID),
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	_, err = h.checkKeyValidity(pak.Key)
 	// Ephemeral keys are by definition reusable
diff --git a/routes.go b/routes.go
index 8b09e3f..a02bed3 100644
--- a/routes.go
+++ b/routes.go
@@ -3,7 +3,6 @@ package headscale
 import (
 	"encoding/json"
 	"errors"
-	"log"
 
 	"gorm.io/datatypes"
 	"inet.af/netaddr"
@@ -42,15 +41,9 @@ func (h *Headscale) EnableNodeRoute(namespace string, nodeName string, routeStr
 
 	for _, rIP := range hi.RoutableIPs {
 		if rIP == route {
-			db, err := h.db()
-			if err != nil {
-				log.Printf("Cannot open DB: %s", err)
-				return nil, err
-			}
-
 			routes, _ := json.Marshal([]string{routeStr}) // TODO: only one for the time being, so overwriting the rest
 			m.EnabledRoutes = datatypes.JSON(routes)
-			db.Save(&m)
+			h.db.Save(&m)
 
 			// THIS IS COMPLETELY USELESS.
 			// The peers map is stored in memory in the server process.
diff --git a/routes_test.go b/routes_test.go
index 19dab34..a05b7e1 100644
--- a/routes_test.go
+++ b/routes_test.go
@@ -16,11 +16,6 @@ func (s *Suite) TestGetRoutes(c *check.C) {
 	pak, err := h.CreatePreAuthKey(n.Name, false, false, nil)
 	c.Assert(err, check.IsNil)
 
-	db, err := h.db()
-	if err != nil {
-		c.Fatal(err)
-	}
-
 	_, err = h.GetMachine("test", "testmachine")
 	c.Assert(err, check.NotNil)
 
@@ -45,7 +40,7 @@ func (s *Suite) TestGetRoutes(c *check.C) {
 		AuthKeyID:      uint(pak.ID),
 		HostInfo:       datatypes.JSON(hostinfo),
 	}
-	db.Save(&m)
+	h.db.Save(&m)
 
 	r, err := h.GetNodeRoutes("test", "testmachine")
 	c.Assert(err, check.IsNil)
diff --git a/utils.go b/utils.go
index c2271aa..f21063b 100644
--- a/utils.go
+++ b/utils.go
@@ -78,10 +78,6 @@ func encodeMsg(b []byte, pubKey *wgkey.Key, privKey *wgkey.Private) ([]byte, err
 }
 
 func (h *Headscale) getAvailableIP() (*net.IP, error) {
-	db, err := h.db()
-	if err != nil {
-		return nil, err
-	}
 	i := 0
 	for {
 		ip, err := getRandomIP()
@@ -89,7 +85,7 @@ func (h *Headscale) getAvailableIP() (*net.IP, error) {
 			return nil, err
 		}
 		m := Machine{}
-		if result := db.First(&m, "ip_address = ?", ip.String()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
+		if result := h.db.First(&m, "ip_address = ?", ip.String()); errors.Is(result.Error, gorm.ErrRecordNotFound) {
 			return ip, nil
 		}
 		i++