WIP: support for multiple WireGuard devices (#2)

assets/js/custom.js

@@ -25,6 +25,11 @@
             }
         });
     });
+    $(function() {
+        $('select.device-selector').change(function() {
+            this.form.submit();
+        });
+    });
 })(jQuery); // End of use strict
 
 

assets/tpl/admin_index.html

@@ -106,6 +106,7 @@
                 </thead>
                 <tbody>
                 {{range $i, $p :=.Peers}}
+                    {{$peerUser:=(userForEmail $.Users $p.Email)}}
                     <tr id="user-pos-{{$i}}" {{if $p.DeactivatedAt}}class="disabled-peer"{{end}}>
                         <th scope="row" class="list-image-cell">
                             <a href="#{{$p.UID}}" data-toggle="collapse" class="collapse-indicator collapsed"></a>
@@ -142,14 +143,14 @@
                                         <div class="tab-content" id="tabContent{{$p.UID}}">
                                             <div id="t1{{$p.UID}}" class="tab-pane fade active show">
                                                 <h4>User details</h4>
-                                                {{if not $p.User}}
+                                                {{if not $peerUser}}
                                                     <p>No user information available...</p>
                                                 {{else}}
                                                     <ul>
-                                                        <li>Firstname: {{$p.User.Firstname}}</li>
+                                                        <li>Firstname: {{$peerUser.Firstname}}</li>
-                                                        <li>Lastname: {{$p.User.Lastname}}</li>
+                                                        <li>Lastname: {{$peerUser.Lastname}}</li>
-                                                        <li>Phone: {{$p.User.Phone}}</li>
+                                                        <li>Phone: {{$peerUser.Phone}}</li>
-                                                        <li>Mail: {{$p.User.Email}}</li>
+                                                        <li>Mail: {{$peerUser.Email}}</li>
                                                     </ul>
                                                 {{end}}
                                                 <h4>Connection / Traffic</h4>

assets/tpl/prt_nav.html

@@ -22,6 +22,19 @@
             {{end}}
             {{end}}{{end}}
         </ul>
+        {{with eq $.Session.LoggedIn true}}{{with eq $.Session.IsAdmin true}}
+        {{with startsWith $.Route "/admin/"}}
+        <form class="form-inline my-2 my-lg-0" method="get">
+            <div class="form-group mr-sm-2">
+                <select name="device" id="inputDevice" class="form-control device-selector">
+                    {{range $i, $d :=$.DeviceNames}}
+                    <option value="{{$d}}" {{if eq $d $.Session.DeviceName}}selected{{end}}>{{$d}}</option>
+                    {{end}}
+                </select>
+            </div>
+        </form>
+        {{end}}
+        {{end}}{{end}}
         {{if eq $.Session.LoggedIn true}}
             <div class="nav-item dropdown">
                 <a href="#" class="navbar-text dropdown-toggle" data-toggle="dropdown">{{$.Session.Firstname}} {{$.Session.Lastname}} <span class="caret"></span></a>
@@ -43,6 +56,6 @@
 </nav>
 {{if not $.Device.IsValid}}
 <div class="container">
-    <div class="alert alert-danger">Warning: WireGuard Interface is not fully configured! Configurations may be incomplete and non functional!</div>
+    <div class="alert alert-danger">Warning: WireGuard Interface {{$.Device.DeviceName}} is not fully configured! Configurations may be incomplete and non functional!</div>
 </div>
 {{end}}

assets/tpl/user_index.html

@@ -30,6 +30,7 @@
                 </thead>
                 <tbody>
                 {{range $i, $p :=.Peers}}
+                    {{$peerUser:=(userForEmail $.Users $p.Email)}}
                     <tr id="user-pos-{{$i}}" {{if $p.DeactivatedAt}}class="disabled-peer"{{end}}>
                         <th scope="row" class="list-image-cell">
                             <a href="#{{$p.UID}}" data-toggle="collapse" class="collapse-indicator collapsed"></a>
@@ -58,14 +59,14 @@
                                         <div class="tab-content" id="tabContent{{$p.UID}}">
                                             <div id="t1{{$p.UID}}" class="tab-pane fade active show">
                                                 <h4>User details</h4>
-                                                {{if not $p.User}}
+                                                {{if not $peerUser}}
                                                     <p>No user information available...</p>
                                                 {{else}}
                                                     <ul>
-                                                        <li>Firstname: {{$p.User.Firstname}}</li>
+                                                        <li>Firstname: {{$peerUser.Firstname}}</li>
-                                                        <li>Lastname: {{$p.User.Lastname}}</li>
+                                                        <li>Lastname: {{$peerUser.Lastname}}</li>
-                                                        <li>Phone: {{$p.User.Phone}}</li>
+                                                        <li>Phone: {{$peerUser.Phone}}</li>
-                                                        <li>Mail: {{$p.User.Email}}</li>
+                                                        <li>Mail: {{$peerUser.Email}}</li>
                                                     </ul>
                                                 {{end}}
                                                 <h4>Traffic</h4>

internal/authentication/providers/password/provider.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/h44z/wg-portal/internal/common"
+
 	"github.com/gin-gonic/gin"
 	"github.com/h44z/wg-portal/internal/authentication"
 	"github.com/h44z/wg-portal/internal/users"
@@ -22,11 +24,11 @@ type Provider struct {
 	db *gorm.DB
 }
 
-func New(cfg *users.Config) (*Provider, error) {
+func New(cfg *common.DatabaseConfig) (*Provider, error) {
 	p := &Provider{}
 
 	var err error
-	p.db, err = users.GetDatabaseForConfig(cfg)
+	p.db, err = common.GetDatabaseForConfig(cfg)
 	if err != nil {
 		return nil, errors.Wrapf(err, "failed to setup authentication database %s", cfg.Database)
 	}

internal/common/db.go

@@ -0,0 +1,76 @@
+package common
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	"gorm.io/driver/mysql"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+)
+
+type SupportedDatabase string
+
+const (
+	SupportedDatabaseMySQL  SupportedDatabase = "mysql"
+	SupportedDatabaseSQLite SupportedDatabase = "sqlite"
+)
+
+type DatabaseConfig struct {
+	Typ      SupportedDatabase `yaml:"typ" envconfig:"DATABASE_TYPE"` //mysql or sqlite
+	Host     string            `yaml:"host" envconfig:"DATABASE_HOST"`
+	Port     int               `yaml:"port" envconfig:"DATABASE_PORT"`
+	Database string            `yaml:"database" envconfig:"DATABASE_NAME"` // On SQLite: the database file-path, otherwise the database name
+	User     string            `yaml:"user" envconfig:"DATABASE_USERNAME"`
+	Password string            `yaml:"password" envconfig:"DATABASE_PASSWORD"`
+}
+
+func GetDatabaseForConfig(cfg *DatabaseConfig) (db *gorm.DB, err error) {
+	switch cfg.Typ {
+	case SupportedDatabaseSQLite:
+		if _, err = os.Stat(filepath.Dir(cfg.Database)); os.IsNotExist(err) {
+			if err = os.MkdirAll(filepath.Dir(cfg.Database), 0700); err != nil {
+				return
+			}
+		}
+		db, err = gorm.Open(sqlite.Open(cfg.Database), &gorm.Config{})
+		if err != nil {
+			return
+		}
+	case SupportedDatabaseMySQL:
+		connectionString := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local", cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.Database)
+		db, err = gorm.Open(mysql.Open(connectionString), &gorm.Config{})
+		if err != nil {
+			return
+		}
+
+		sqlDB, _ := db.DB()
+		sqlDB.SetConnMaxLifetime(time.Minute * 5)
+		sqlDB.SetMaxIdleConns(2)
+		sqlDB.SetMaxOpenConns(10)
+		err = sqlDB.Ping() // This DOES open a connection if necessary. This makes sure the database is accessible
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to ping mysql authentication database")
+		}
+	}
+
+	// Enable Logger (logrus)
+	logCfg := logger.Config{
+		SlowThreshold: time.Second, // all slower than one second
+		Colorful:      false,
+		LogLevel:      logger.Silent, // default: log nothing
+	}
+
+	if logrus.StandardLogger().GetLevel() == logrus.TraceLevel {
+		logCfg.LogLevel = logger.Info
+		logCfg.SlowThreshold = 500 * time.Millisecond // all slower than half a second
+	}
+
+	db.Config.Logger = logger.New(logrus.StandardLogger(), logCfg)
+	return
+}

internal/common/util.go

@@ -60,6 +60,16 @@ func ListToString(lst []string) string {
 	return strings.Join(lst, ", ")
 }
 
+// ListContains checks if a needle exists in the given list.
+func ListContains(lst []string, needle string) bool {
+	for _, entry := range lst {
+		if entry == needle {
+			return true
+		}
+	}
+	return false
+}
+
 // https://yourbasic.org/golang/formatting-byte-size-to-human-readable-format/
 func ByteCountSI(b int64) string {
 	const unit = 1000

internal/server/configuration.go

@@ -1,12 +1,12 @@
-package common
+package server
 
 import (
 	"os"
 	"reflect"
 	"runtime"
 
+	"github.com/h44z/wg-portal/internal/common"
 	"github.com/h44z/wg-portal/internal/ldap"
-	"github.com/h44z/wg-portal/internal/users"
 	"github.com/h44z/wg-portal/internal/wireguard"
 	"github.com/kelseyhightower/envconfig"
 	"github.com/pkg/errors"
@@ -66,10 +66,10 @@ type Config struct {
 		CreateDefaultPeer bool   `yaml:"createDefaultPeer" envconfig:"CREATE_DEFAULT_PEER"`
 		LdapEnabled       bool   `yaml:"ldapEnabled" envconfig:"LDAP_ENABLED"`
 	} `yaml:"core"`
-	Database users.Config     `yaml:"database"`
+	Database common.DatabaseConfig `yaml:"database"`
-	Email    MailConfig       `yaml:"email"`
+	Email    common.MailConfig     `yaml:"email"`
-	LDAP     ldap.Config      `yaml:"ldap"`
+	LDAP     ldap.Config           `yaml:"ldap"`
-	WG       wireguard.Config `yaml:"wg"`
+	WG       wireguard.Config      `yaml:"wg"`
 }
 
 func NewConfig() *Config {
@@ -103,8 +103,9 @@ func NewConfig() *Config {
 	cfg.LDAP.DisabledAttribute = "userAccountControl"
 	cfg.LDAP.AdminLdapGroup = "CN=WireGuardAdmins,OU=_O_IT,DC=COMPANY,DC=LOCAL"
 
-	cfg.WG.DeviceName = "wg0"
+	cfg.WG.DeviceNames = []string{"wg0"}
-	cfg.WG.WireGuardConfig = "/etc/wireguard/wg0.conf"
+	cfg.WG.DefaultDeviceName = "wg0"
+	cfg.WG.ConfigDirectoryPath = "/etc/wireguard"
 	cfg.WG.ManageIPAddresses = true
 	cfg.Email.Host = "127.0.0.1"
 	cfg.Email.Port = 25

internal/server/handlers_auth.go

@@ -98,7 +98,7 @@ func (s *Server) PostLogin(c *gin.Context) {
 				Firstname: userData.Firstname,
 				Lastname:  userData.Lastname,
 				Phone:     userData.Phone,
-			}); err != nil {
+			}, s.wg.Cfg.DefaultDeviceName); err != nil {
 				s.GetHandleError(c, http.StatusInternalServerError, "login error", "failed to update user data")
 				return
 			}
@@ -121,9 +121,10 @@ func (s *Server) PostLogin(c *gin.Context) {
 	sessionData.Email = user.Email
 	sessionData.Firstname = user.Firstname
 	sessionData.Lastname = user.Lastname
+	sessionData.DeviceName = s.wg.Cfg.DeviceNames[0]
 
 	// Check if user already has a peer setup, if not create one
-	if err := s.CreateUserDefaultPeer(user.Email); err != nil {
+	if err := s.CreateUserDefaultPeer(user.Email, s.wg.Cfg.DefaultDeviceName); err != nil {
 		// Not a fatal error, just log it...
 		logrus.Errorf("failed to automatically create vpn peer for %s: %v", sessionData.Email, err)
 	}

internal/server/handlers_common.go

@@ -4,37 +4,42 @@ import (
 	"net/http"
 	"strconv"
 
+	"github.com/h44z/wg-portal/internal/users"
+
+	"github.com/h44z/wg-portal/internal/common"
+
 	"github.com/pkg/errors"
 
 	"github.com/gin-gonic/gin"
 )
 
 func (s *Server) GetHandleError(c *gin.Context, code int, message, details string) {
+	currentSession := GetSessionData(c)
+
 	c.HTML(code, "error.html", gin.H{
 		"Data": gin.H{
 			"Code":    strconv.Itoa(code),
 			"Message": message,
 			"Details": details,
 		},
-		"Route":   c.Request.URL.Path,
+		"Route":       c.Request.URL.Path,
-		"Session": GetSessionData(c),
+		"Session":     GetSessionData(c),
-		"Static":  s.getStaticData(),
+		"Static":      s.getStaticData(),
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
+		"DeviceNames": s.wg.Cfg.DeviceNames,
 	})
 }
 
 func (s *Server) GetIndex(c *gin.Context) {
-	c.HTML(http.StatusOK, "index.html", struct {
+	currentSession := GetSessionData(c)
-		Route   string
+
-		Alerts  []FlashData
+	c.HTML(http.StatusOK, "index.html", gin.H{
-		Session SessionData
+		"Route":       c.Request.URL.Path,
-		Static  StaticData
+		"Alerts":      GetFlashes(c),
-		Device  Device
+		"Session":     currentSession,
-	}{
+		"Static":      s.getStaticData(),
-		Route:   c.Request.URL.Path,
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
-		Alerts:  GetFlashes(c),
+		"DeviceNames": s.wg.Cfg.DeviceNames,
-		Session: GetSessionData(c),
-		Static:  s.getStaticData(),
-		Device:  s.peers.GetDevice(),
 	})
 }
 
@@ -74,25 +79,35 @@ func (s *Server) GetAdminIndex(c *gin.Context) {
 		return
 	}
 
-	device := s.peers.GetDevice()
+	deviceName := c.Query("device")
-	users := s.peers.GetFilteredAndSortedPeers(currentSession.SortedBy["peers"], currentSession.SortDirection["peers"], currentSession.Search["peers"])
+	if deviceName != "" {
+		if !common.ListContains(s.wg.Cfg.DeviceNames, deviceName) {
+			s.GetHandleError(c, http.StatusInternalServerError, "device selection error", "no such device")
+			return
+		}
+		currentSession.DeviceName = deviceName
 
-	c.HTML(http.StatusOK, "admin_index.html", struct {
+		if err := UpdateSessionData(c, currentSession); err != nil {
-		Route      string
+			s.GetHandleError(c, http.StatusInternalServerError, "device selection error", "failed to save session")
-		Alerts     []FlashData
+			return
-		Session    SessionData
+		}
-		Static     StaticData
+		c.Redirect(http.StatusSeeOther, "/admin/")
-		Peers      []Peer
+		return
-		TotalPeers int
+	}
-		Device     Device
+
-	}{
+	device := s.peers.GetDevice(currentSession.DeviceName)
-		Route:      c.Request.URL.Path,
+	users := s.peers.GetFilteredAndSortedPeers(currentSession.DeviceName, currentSession.SortedBy["peers"], currentSession.SortDirection["peers"], currentSession.Search["peers"])
-		Alerts:     GetFlashes(c),
+
-		Session:    currentSession,
+	c.HTML(http.StatusOK, "admin_index.html", gin.H{
-		Static:     s.getStaticData(),
+		"Route":       c.Request.URL.Path,
-		Peers:      users,
+		"Alerts":      GetFlashes(c),
-		TotalPeers: len(s.peers.GetAllPeers()),
+		"Session":     currentSession,
-		Device:     device,
+		"Static":      s.getStaticData(),
+		"Peers":       users,
+		"TotalPeers":  len(s.peers.GetAllPeers(currentSession.DeviceName)),
+		"Users":       s.users.GetUsers(),
+		"Device":      device,
+		"DeviceNames": s.wg.Cfg.DeviceNames,
 	})
 }
 
@@ -120,25 +135,18 @@ func (s *Server) GetUserIndex(c *gin.Context) {
 		return
 	}
 
-	device := s.peers.GetDevice()
+	peers := s.peers.GetSortedPeersForEmail(currentSession.SortedBy["userpeers"], currentSession.SortDirection["userpeers"], currentSession.Email)
-	users := s.peers.GetSortedPeersForEmail(currentSession.SortedBy["userpeers"], currentSession.SortDirection["userpeers"], currentSession.Email)
 
-	c.HTML(http.StatusOK, "user_index.html", struct {
+	c.HTML(http.StatusOK, "user_index.html", gin.H{
-		Route      string
+		"Route":       c.Request.URL.Path,
-		Alerts     []FlashData
+		"Alerts":      GetFlashes(c),
-		Session    SessionData
+		"Session":     currentSession,
-		Static     StaticData
+		"Static":      s.getStaticData(),
-		Peers      []Peer
+		"Peers":       peers,
-		TotalPeers int
+		"TotalPeers":  len(peers),
-		Device     Device
+		"Users":       []users.User{*s.users.GetUser(currentSession.Email)},
-	}{
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
-		Route:      c.Request.URL.Path,
+		"DeviceNames": s.wg.Cfg.DeviceNames,
-		Alerts:     GetFlashes(c),
-		Session:    currentSession,
-		Static:     s.getStaticData(),
-		Peers:      users,
-		TotalPeers: len(users),
-		Device:     device,
 	})
 }
 
@@ -158,7 +166,7 @@ func (s *Server) setNewPeerFormInSession(c *gin.Context) (SessionData, error) {
 	// If session does not contain a peer form ignore update
 	// If url contains a formerr parameter reset the form
 	if currentSession.FormData == nil || c.Query("formerr") == "" {
-		user, err := s.PrepareNewPeer()
+		user, err := s.PrepareNewPeer(currentSession.DeviceName)
 		if err != nil {
 			return currentSession, errors.WithMessage(err, "failed to prepare new peer")
 		}

internal/server/handlers_interface.go

@@ -4,44 +4,37 @@ import (
 	"net/http"
 	"strings"
 
+	"github.com/h44z/wg-portal/internal/wireguard"
+
 	"github.com/gin-gonic/gin"
 	"github.com/h44z/wg-portal/internal/common"
 )
 
 func (s *Server) GetAdminEditInterface(c *gin.Context) {
-	device := s.peers.GetDevice()
+	currentSession := GetSessionData(c)
-	users := s.peers.GetAllPeers()
+	device := s.peers.GetDevice(currentSession.DeviceName)
-
 	currentSession, err := s.setFormInSession(c, device)
 	if err != nil {
 		s.GetHandleError(c, http.StatusInternalServerError, "Session error", err.Error())
 		return
 	}
 
-	c.HTML(http.StatusOK, "admin_edit_interface.html", struct {
+	c.HTML(http.StatusOK, "admin_edit_interface.html", gin.H{
-		Route        string
+		"Route":        c.Request.URL.Path,
-		Alerts       []FlashData
+		"Alerts":       GetFlashes(c),
-		Session      SessionData
+		"Session":      currentSession,
-		Static       StaticData
+		"Static":       s.getStaticData(),
-		Peers        []Peer
+		"Device":       currentSession.FormData.(wireguard.Device),
-		Device       Device
+		"EditableKeys": s.config.Core.EditableKeys,
-		EditableKeys bool
+		"DeviceNames":  s.wg.Cfg.DeviceNames,
-	}{
-		Route:        c.Request.URL.Path,
-		Alerts:       GetFlashes(c),
-		Session:      currentSession,
-		Static:       s.getStaticData(),
-		Peers:        users,
-		Device:       currentSession.FormData.(Device),
-		EditableKeys: s.config.Core.EditableKeys,
 	})
 }
 
 func (s *Server) PostAdminEditInterface(c *gin.Context) {
 	currentSession := GetSessionData(c)
-	var formDevice Device
+	var formDevice wireguard.Device
 	if currentSession.FormData != nil {
-		formDevice = currentSession.FormData.(Device)
+		formDevice = currentSession.FormData.(wireguard.Device)
 	}
 	if err := c.ShouldBind(&formDevice); err != nil {
 		_ = s.updateFormInSession(c, formDevice)
@@ -76,7 +69,7 @@ func (s *Server) PostAdminEditInterface(c *gin.Context) {
 	}
 
 	// Update WireGuard config file
-	err = s.WriteWireGuardConfigFile()
+	err = s.WriteWireGuardConfigFile(currentSession.DeviceName)
 	if err != nil {
 		_ = s.updateFormInSession(c, formDevice)
 		SetFlashMessage(c, "Failed to update WireGuard config-file: "+err.Error(), "danger")
@@ -86,12 +79,12 @@ func (s *Server) PostAdminEditInterface(c *gin.Context) {
 
 	// Update interface IP address
 	if s.config.WG.ManageIPAddresses {
-		if err := s.wg.SetIPAddress(formDevice.IPs); err != nil {
+		if err := s.wg.SetIPAddress(currentSession.DeviceName, formDevice.IPs); err != nil {
 			_ = s.updateFormInSession(c, formDevice)
 			SetFlashMessage(c, "Failed to update ip address: "+err.Error(), "danger")
 			c.Redirect(http.StatusSeeOther, "/admin/device/edit?formerr=update")
 		}
-		if err := s.wg.SetMTU(formDevice.Mtu); err != nil {
+		if err := s.wg.SetMTU(currentSession.DeviceName, formDevice.Mtu); err != nil {
 			_ = s.updateFormInSession(c, formDevice)
 			SetFlashMessage(c, "Failed to update MTU: "+err.Error(), "danger")
 			c.Redirect(http.StatusSeeOther, "/admin/device/edit?formerr=update")
@@ -106,9 +99,10 @@ func (s *Server) PostAdminEditInterface(c *gin.Context) {
 }
 
 func (s *Server) GetInterfaceConfig(c *gin.Context) {
-	device := s.peers.GetDevice()
+	currentSession := GetSessionData(c)
-	users := s.peers.GetActivePeers()
+	device := s.peers.GetDevice(currentSession.DeviceName)
-	cfg, err := device.GetConfigFile(users)
+	peers := s.peers.GetActivePeers(device.DeviceName)
+	cfg, err := device.GetConfigFile(peers)
 	if err != nil {
 		s.GetHandleError(c, http.StatusInternalServerError, "ConfigFile error", err.Error())
 		return
@@ -122,13 +116,14 @@ func (s *Server) GetInterfaceConfig(c *gin.Context) {
 }
 
 func (s *Server) GetApplyGlobalConfig(c *gin.Context) {
-	device := s.peers.GetDevice()
+	currentSession := GetSessionData(c)
-	users := s.peers.GetAllPeers()
+	device := s.peers.GetDevice(currentSession.DeviceName)
+	peers := s.peers.GetAllPeers(device.DeviceName)
 
-	for _, user := range users {
+	for _, peer := range peers {
-		user.AllowedIPs = device.AllowedIPs
+		peer.AllowedIPs = device.AllowedIPs
-		user.AllowedIPsStr = device.AllowedIPsStr
+		peer.AllowedIPsStr = device.AllowedIPsStr
-		if err := s.peers.UpdatePeer(user); err != nil {
+		if err := s.peers.UpdatePeer(peer); err != nil {
 			SetFlashMessage(c, err.Error(), "danger")
 			c.Redirect(http.StatusSeeOther, "/admin/device/edit")
 		}

internal/server/handlers_peer.go

@@ -8,9 +8,10 @@ import (
 	"strings"
 	"time"
 
+	"github.com/h44z/wg-portal/internal/wireguard"
+
 	"github.com/gin-gonic/gin"
 	"github.com/h44z/wg-portal/internal/common"
-	"github.com/h44z/wg-portal/internal/users"
 	"github.com/sirupsen/logrus"
 	"github.com/tatsushid/go-fastping"
 )
@@ -21,7 +22,6 @@ type LdapCreateForm struct {
 }
 
 func (s *Server) GetAdminEditPeer(c *gin.Context) {
-	device := s.peers.GetDevice()
 	peer := s.peers.GetPeerByKey(c.Query("pkey"))
 
 	currentSession, err := s.setFormInSession(c, peer)
@@ -30,22 +30,15 @@ func (s *Server) GetAdminEditPeer(c *gin.Context) {
 		return
 	}
 
-	c.HTML(http.StatusOK, "admin_edit_client.html", struct {
+	c.HTML(http.StatusOK, "admin_edit_client.html", gin.H{
-		Route        string
+		"Route":        c.Request.URL.Path,
-		Alerts       []FlashData
+		"Alerts":       GetFlashes(c),
-		Session      SessionData
+		"Session":      currentSession,
-		Static       StaticData
+		"Static":       s.getStaticData(),
-		Peer         Peer
+		"Peer":         currentSession.FormData.(wireguard.Peer),
-		Device       Device
+		"EditableKeys": s.config.Core.EditableKeys,
-		EditableKeys bool
+		"Device":       s.peers.GetDevice(currentSession.DeviceName),
-	}{
+		"DeviceNames":  s.wg.Cfg.DeviceNames,
-		Route:        c.Request.URL.Path,
-		Alerts:       GetFlashes(c),
-		Session:      currentSession,
-		Static:       s.getStaticData(),
-		Peer:         currentSession.FormData.(Peer),
-		Device:       device,
-		EditableKeys: s.config.Core.EditableKeys,
 	})
 }
 
@@ -54,9 +47,9 @@ func (s *Server) PostAdminEditPeer(c *gin.Context) {
 	urlEncodedKey := url.QueryEscape(c.Query("pkey"))
 
 	currentSession := GetSessionData(c)
-	var formPeer Peer
+	var formPeer wireguard.Peer
 	if currentSession.FormData != nil {
-		formPeer = currentSession.FormData.(Peer)
+		formPeer = currentSession.FormData.(wireguard.Peer)
 	}
 	if err := c.ShouldBind(&formPeer); err != nil {
 		_ = s.updateFormInSession(c, formPeer)
@@ -92,37 +85,28 @@ func (s *Server) PostAdminEditPeer(c *gin.Context) {
 }
 
 func (s *Server) GetAdminCreatePeer(c *gin.Context) {
-	device := s.peers.GetDevice()
-
 	currentSession, err := s.setNewPeerFormInSession(c)
 	if err != nil {
 		s.GetHandleError(c, http.StatusInternalServerError, "Session error", err.Error())
 		return
 	}
-	c.HTML(http.StatusOK, "admin_edit_client.html", struct {
+	c.HTML(http.StatusOK, "admin_edit_client.html", gin.H{
-		Route        string
+		"Route":        c.Request.URL.Path,
-		Alerts       []FlashData
+		"Alerts":       GetFlashes(c),
-		Session      SessionData
+		"Session":      currentSession,
-		Static       StaticData
+		"Static":       s.getStaticData(),
-		Peer         Peer
+		"Peer":         currentSession.FormData.(wireguard.Peer),
-		Device       Device
+		"EditableKeys": s.config.Core.EditableKeys,
-		EditableKeys bool
+		"Device":       s.peers.GetDevice(currentSession.DeviceName),
-	}{
+		"DeviceNames":  s.wg.Cfg.DeviceNames,
-		Route:        c.Request.URL.Path,
-		Alerts:       GetFlashes(c),
-		Session:      currentSession,
-		Static:       s.getStaticData(),
-		Peer:         currentSession.FormData.(Peer),
-		Device:       device,
-		EditableKeys: s.config.Core.EditableKeys,
 	})
 }
 
 func (s *Server) PostAdminCreatePeer(c *gin.Context) {
 	currentSession := GetSessionData(c)
-	var formPeer Peer
+	var formPeer wireguard.Peer
 	if currentSession.FormData != nil {
-		formPeer = currentSession.FormData.(Peer)
+		formPeer = currentSession.FormData.(wireguard.Peer)
 	}
 	if err := c.ShouldBind(&formPeer); err != nil {
 		_ = s.updateFormInSession(c, formPeer)
@@ -143,7 +127,7 @@ func (s *Server) PostAdminCreatePeer(c *gin.Context) {
 		formPeer.DeactivatedAt = &now
 	}
 
-	if err := s.CreatePeer(formPeer); err != nil {
+	if err := s.CreatePeer(currentSession.DeviceName, formPeer); err != nil {
 		_ = s.updateFormInSession(c, formPeer)
 		SetFlashMessage(c, "failed to add user: "+err.Error(), "danger")
 		c.Redirect(http.StatusSeeOther, "/admin/peer/create?formerr=create")
@@ -161,22 +145,15 @@ func (s *Server) GetAdminCreateLdapPeers(c *gin.Context) {
 		return
 	}
 
-	c.HTML(http.StatusOK, "admin_create_clients.html", struct {
+	c.HTML(http.StatusOK, "admin_create_clients.html", gin.H{
-		Route    string
+		"Route":       c.Request.URL.Path,
-		Alerts   []FlashData
+		"Alerts":      GetFlashes(c),
-		Session  SessionData
+		"Session":     currentSession,
-		Static   StaticData
+		"Static":      s.getStaticData(),
-		Users    []users.User
+		"Users":       s.users.GetFilteredAndSortedUsers("lastname", "asc", ""),
-		FormData LdapCreateForm
+		"FormData":    currentSession.FormData.(LdapCreateForm),
-		Device   Device
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
-	}{
+		"DeviceNames": s.wg.Cfg.DeviceNames,
-		Route:    c.Request.URL.Path,
-		Alerts:   GetFlashes(c),
-		Session:  currentSession,
-		Static:   s.getStaticData(),
-		Users:    s.users.GetFilteredAndSortedUsers("lastname", "asc", ""),
-		FormData: currentSession.FormData.(LdapCreateForm),
-		Device:   s.peers.GetDevice(),
 	})
 }
 
@@ -207,7 +184,7 @@ func (s *Server) PostAdminCreateLdapPeers(c *gin.Context) {
 	logrus.Infof("creating %d ldap peers", len(emails))
 
 	for i := range emails {
-		if err := s.CreatePeerByEmail(emails[i], formData.Identifier, false); err != nil {
+		if err := s.CreatePeerByEmail(currentSession.DeviceName, emails[i], formData.Identifier, false); err != nil {
 			_ = s.updateFormInSession(c, formData)
 			SetFlashMessage(c, "failed to add user: "+err.Error(), "danger")
 			c.Redirect(http.StatusSeeOther, "/admin/peer/createldap?formerr=create")
@@ -225,7 +202,7 @@ func (s *Server) GetAdminDeletePeer(c *gin.Context) {
 		s.GetHandleError(c, http.StatusInternalServerError, "Deletion error", err.Error())
 		return
 	}
-	SetFlashMessage(c, "user deleted successfully", "success")
+	SetFlashMessage(c, "peer deleted successfully", "success")
 	c.Redirect(http.StatusSeeOther, "/admin")
 }
 
@@ -254,7 +231,7 @@ func (s *Server) GetPeerConfig(c *gin.Context) {
 		return
 	}
 
-	cfg, err := user.GetConfigFile(s.peers.GetDevice())
+	cfg, err := user.GetConfigFile(s.peers.GetDevice(currentSession.DeviceName))
 	if err != nil {
 		s.GetHandleError(c, http.StatusInternalServerError, "ConfigFile error", err.Error())
 		return
@@ -273,7 +250,7 @@ func (s *Server) GetPeerConfigMail(c *gin.Context) {
 		return
 	}
 
-	cfg, err := user.GetConfigFile(s.peers.GetDevice())
+	cfg, err := user.GetConfigFile(s.peers.GetDevice(currentSession.DeviceName))
 	if err != nil {
 		s.GetHandleError(c, http.StatusInternalServerError, "ConfigFile error", err.Error())
 		return
@@ -286,7 +263,7 @@ func (s *Server) GetPeerConfigMail(c *gin.Context) {
 	// Apply mail template
 	var tplBuff bytes.Buffer
 	if err := s.mailTpl.Execute(&tplBuff, struct {
-		Client        Peer
+		Client        wireguard.Peer
 		QrcodePngName string
 		PortalUrl     string
 	}{

internal/server/handlers_user.go

@@ -49,22 +49,15 @@ func (s *Server) GetAdminUsersIndex(c *gin.Context) {
 
 	dbUsers := s.users.GetFilteredAndSortedUsersUnscoped(currentSession.SortedBy["users"], currentSession.SortDirection["users"], currentSession.Search["users"])
 
-	c.HTML(http.StatusOK, "admin_user_index.html", struct {
+	c.HTML(http.StatusOK, "admin_user_index.html", gin.H{
-		Route      string
+		"Route":       c.Request.URL.Path,
-		Alerts     []FlashData
+		"Alerts":      GetFlashes(c),
-		Session    SessionData
+		"Session":     currentSession,
-		Static     StaticData
+		"Static":      s.getStaticData(),
-		Users      []users.User
+		"Users":       dbUsers,
-		TotalUsers int
+		"TotalUsers":  len(s.users.GetUsers()),
-		Device     Device
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
-	}{
+		"DeviceNames": s.wg.Cfg.DeviceNames,
-		Route:      c.Request.URL.Path,
-		Alerts:     GetFlashes(c),
-		Session:    currentSession,
-		Static:     s.getStaticData(),
-		Users:      dbUsers,
-		TotalUsers: len(s.users.GetUsers()),
-		Device:     s.peers.GetDevice(),
 	})
 }
 
@@ -77,21 +70,14 @@ func (s *Server) GetAdminUsersEdit(c *gin.Context) {
 		return
 	}
 
-	c.HTML(http.StatusOK, "admin_edit_user.html", struct {
+	c.HTML(http.StatusOK, "admin_edit_user.html", gin.H{
-		Route   string
+		"Route":       c.Request.URL.Path,
-		Alerts  []FlashData
+		"Alerts":      GetFlashes(c),
-		Session SessionData
+		"Session":     currentSession,
-		Static  StaticData
+		"Static":      s.getStaticData(),
-		User    users.User
+		"User":        currentSession.FormData.(users.User),
-		Device  Device
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
-		Epoch   time.Time
+		"DeviceNames": s.wg.Cfg.DeviceNames,
-	}{
-		Route:   c.Request.URL.Path,
-		Alerts:  GetFlashes(c),
-		Session: currentSession,
-		Static:  s.getStaticData(),
-		User:    currentSession.FormData.(users.User),
-		Device:  s.peers.GetDevice(),
 	})
 }
 
@@ -160,21 +146,14 @@ func (s *Server) GetAdminUsersCreate(c *gin.Context) {
 		return
 	}
 
-	c.HTML(http.StatusOK, "admin_edit_user.html", struct {
+	c.HTML(http.StatusOK, "admin_edit_user.html", gin.H{
-		Route   string
+		"Route":       c.Request.URL.Path,
-		Alerts  []FlashData
+		"Alerts":      GetFlashes(c),
-		Session SessionData
+		"Session":     currentSession,
-		Static  StaticData
+		"Static":      s.getStaticData(),
-		User    users.User
+		"User":        currentSession.FormData.(users.User),
-		Device  Device
+		"Device":      s.peers.GetDevice(currentSession.DeviceName),
-		Epoch   time.Time
+		"DeviceNames": s.wg.Cfg.DeviceNames,
-	}{
-		Route:   c.Request.URL.Path,
-		Alerts:  GetFlashes(c),
-		Session: currentSession,
-		Static:  s.getStaticData(),
-		User:    currentSession.FormData.(users.User),
-		Device:  s.peers.GetDevice(),
 	})
 }
 
@@ -218,7 +197,7 @@ func (s *Server) PostAdminUsersCreate(c *gin.Context) {
 	formUser.IsAdmin = c.PostForm("isadmin") == "true"
 	formUser.Source = users.UserSourceDatabase
 
-	if err := s.CreateUser(formUser); err != nil {
+	if err := s.CreateUser(formUser, currentSession.DeviceName); err != nil {
 		_ = s.updateFormInSession(c, formUser)
 		SetFlashMessage(c, "failed to add user: "+err.Error(), "danger")
 		c.Redirect(http.StatusSeeOther, "/admin/users/create?formerr=create")

internal/server/routes.go

@@ -4,14 +4,14 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	wg_portal "github.com/h44z/wg-portal"
+	wgportal "github.com/h44z/wg-portal"
 )
 
 func SetupRoutes(s *Server) {
 	// Startpage
 	s.server.GET("/", s.GetIndex)
 	s.server.GET("/favicon.ico", func(c *gin.Context) {
-		file, _ := wg_portal.Statics.ReadFile("assets/img/favicon.ico")
+		file, _ := wgportal.Statics.ReadFile("assets/img/favicon.ico")
 		c.Data(
 			http.StatusOK,
 			"image/x-icon",

internal/server/server.go

@@ -11,12 +11,15 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"strings"
 	"time"
 
+	"gorm.io/gorm"
+
 	"github.com/gin-contrib/sessions"
 	"github.com/gin-contrib/sessions/memstore"
 	"github.com/gin-gonic/gin"
-	wg_portal "github.com/h44z/wg-portal"
+	wgportal "github.com/h44z/wg-portal"
 	ldapprovider "github.com/h44z/wg-portal/internal/authentication/providers/ldap"
 	passwordprovider "github.com/h44z/wg-portal/internal/authentication/providers/password"
 	"github.com/h44z/wg-portal/internal/common"
@@ -32,18 +35,19 @@ const SessionIdentifier = "wgPortalSession"
 func init() {
 	gob.Register(SessionData{})
 	gob.Register(FlashData{})
-	gob.Register(Peer{})
+	gob.Register(wireguard.Peer{})
-	gob.Register(Device{})
+	gob.Register(wireguard.Device{})
 	gob.Register(LdapCreateForm{})
 	gob.Register(users.User{})
 }
 
 type SessionData struct {
-	LoggedIn  bool
+	LoggedIn   bool
-	IsAdmin   bool
+	IsAdmin    bool
-	Firstname string
+	Firstname  string
-	Lastname  string
+	Lastname   string
-	Email     string
+	Email      string
+	DeviceName string
 
 	SortedBy      map[string]string
 	SortDirection map[string]string
@@ -69,14 +73,15 @@ type StaticData struct {
 
 type Server struct {
 	ctx     context.Context
-	config  *common.Config
+	config  *Config
 	server  *gin.Engine
 	mailTpl *template.Template
 	auth    *AuthManager
 
+	db    *gorm.DB
 	users *users.Manager
 	wg    *wireguard.Manager
-	peers *PeerManager
+	peers *wireguard.PeerManager
 }
 
 func (s *Server) Setup(ctx context.Context) error {
@@ -90,9 +95,15 @@ func (s *Server) Setup(ctx context.Context) error {
 	// Init rand
 	rand.Seed(time.Now().UnixNano())
 
-	s.config = common.NewConfig()
+	s.config = NewConfig()
 	s.ctx = ctx
 
+	// Setup database connection
+	s.db, err = common.GetDatabaseForConfig(&s.config.Database)
+	if err != nil {
+		return errors.WithMessage(err, "database setup failed")
+	}
+
 	// Setup http server
 	gin.SetMode(gin.DebugMode)
 	gin.DefaultWriter = ioutil.Discard
@@ -104,24 +115,33 @@ func (s *Server) Setup(ctx context.Context) error {
 	s.server.SetFuncMap(template.FuncMap{
 		"formatBytes": common.ByteCountSI,
 		"urlEncode":   url.QueryEscape,
+		"startsWith":  strings.HasPrefix,
+		"userForEmail": func(users []users.User, email string) *users.User {
+			for i := range users {
+				if users[i].Email == email {
+					return &users[i]
+				}
+			}
+			return nil
+		},
 	})
 
 	// Setup templates
-	templates := template.Must(template.New("").Funcs(s.server.FuncMap).ParseFS(wg_portal.Templates, "assets/tpl/*.html"))
+	templates := template.Must(template.New("").Funcs(s.server.FuncMap).ParseFS(wgportal.Templates, "assets/tpl/*.html"))
 	s.server.SetHTMLTemplate(templates)
 	s.server.Use(sessions.Sessions("authsession", memstore.NewStore([]byte("secret")))) // TODO: change key?
 
 	// Serve static files
-	s.server.StaticFS("/css", http.FS(fsMust(fs.Sub(wg_portal.Statics, "assets/css"))))
+	s.server.StaticFS("/css", http.FS(fsMust(fs.Sub(wgportal.Statics, "assets/css"))))
-	s.server.StaticFS("/js", http.FS(fsMust(fs.Sub(wg_portal.Statics, "assets/js"))))
+	s.server.StaticFS("/js", http.FS(fsMust(fs.Sub(wgportal.Statics, "assets/js"))))
-	s.server.StaticFS("/img", http.FS(fsMust(fs.Sub(wg_portal.Statics, "assets/img"))))
+	s.server.StaticFS("/img", http.FS(fsMust(fs.Sub(wgportal.Statics, "assets/img"))))
-	s.server.StaticFS("/fonts", http.FS(fsMust(fs.Sub(wg_portal.Statics, "assets/fonts"))))
+	s.server.StaticFS("/fonts", http.FS(fsMust(fs.Sub(wgportal.Statics, "assets/fonts"))))
 
 	// Setup all routes
 	SetupRoutes(s)
 
 	// Setup user database (also needed for database authentication)
-	s.users, err = users.NewManager(&s.config.Database)
+	s.users, err = users.NewManager(s.db)
 	if err != nil {
 		return errors.WithMessage(err, "user-manager initialization failed")
 	}
@@ -153,18 +173,21 @@ func (s *Server) Setup(ctx context.Context) error {
 	}
 
 	// Setup peer manager
-	if s.peers, err = NewPeerManager(s.config, s.wg, s.users); err != nil {
+	if s.peers, err = wireguard.NewPeerManager(s.db, s.wg); err != nil {
 		return errors.WithMessage(err, "unable to setup peer manager")
 	}
-	if err = s.peers.InitFromCurrentInterface(); err != nil {
+	if err = s.peers.InitFromPhysicalInterface(); err != nil {
-		return errors.WithMessage(err, "unable to initialize peer manager")
+		return errors.WithMessagef(err, "unable to initialize peer manager")
 	}
-	if err = s.RestoreWireGuardInterface(); err != nil {
+
-		return errors.WithMessage(err, "unable to restore WireGuard state")
+	for _, deviceName := range s.wg.Cfg.DeviceNames {
+		if err = s.RestoreWireGuardInterface(deviceName); err != nil {
+			return errors.WithMessagef(err, "unable to restore WireGuard state for %s", deviceName)
+		}
 	}
 
 	// Setup mail template
-	s.mailTpl, err = template.New("email.html").ParseFS(wg_portal.Templates, "assets/tpl/email.html")
+	s.mailTpl, err = template.New("email.html").ParseFS(wgportal.Templates, "assets/tpl/email.html")
 	if err != nil {
 		return errors.Wrap(err, "unable to pare mail template")
 	}
@@ -174,6 +197,8 @@ func (s *Server) Setup(ctx context.Context) error {
 }
 
 func (s *Server) Run() {
+	logrus.Infof("starting web service on %s", s.config.Core.ListeningAddress)
+
 	// Start ldap sync
 	if s.config.Core.LdapEnabled {
 		go s.SyncLdapWithUserDatabase()
@@ -238,6 +263,7 @@ func GetSessionData(c *gin.Context) SessionData {
 			Email:         "",
 			Firstname:     "",
 			Lastname:      "",
+			DeviceName:    "",
 			IsAdmin:       false,
 			LoggedIn:      false,
 		}

internal/server/server_helper.go

@@ -4,9 +4,12 @@ import (
 	"crypto/md5"
 	"fmt"
 	"io/ioutil"
+	"path"
 	"syscall"
 	"time"
 
+	"github.com/h44z/wg-portal/internal/wireguard"
+
 	"github.com/h44z/wg-portal/internal/common"
 	"github.com/h44z/wg-portal/internal/users"
 	"github.com/pkg/errors"
@@ -15,28 +18,29 @@ import (
 	"gorm.io/gorm"
 )
 
-func (s *Server) PrepareNewPeer() (Peer, error) {
+// PrepareNewPeer initiates a new peer for the given WireGuard device.
-	device := s.peers.GetDevice()
+func (s *Server) PrepareNewPeer(device string) (wireguard.Peer, error) {
+	dev := s.peers.GetDevice(device)
 
-	peer := Peer{}
+	peer := wireguard.Peer{}
 	peer.IsNew = true
-	peer.AllowedIPsStr = device.AllowedIPsStr
+	peer.AllowedIPsStr = dev.AllowedIPsStr
-	peer.IPs = make([]string, len(device.IPs))
+	peer.IPs = make([]string, len(dev.IPs))
-	for i := range device.IPs {
+	for i := range dev.IPs {
-		freeIP, err := s.peers.GetAvailableIp(device.IPs[i])
+		freeIP, err := s.peers.GetAvailableIp(device, dev.IPs[i])
 		if err != nil {
-			return Peer{}, errors.WithMessage(err, "failed to get available IP addresses")
+			return wireguard.Peer{}, errors.WithMessage(err, "failed to get available IP addresses")
 		}
 		peer.IPs[i] = freeIP
 	}
 	peer.IPsStr = common.ListToString(peer.IPs)
 	psk, err := wgtypes.GenerateKey()
 	if err != nil {
-		return Peer{}, errors.Wrap(err, "failed to generate key")
+		return wireguard.Peer{}, errors.Wrap(err, "failed to generate key")
 	}
 	key, err := wgtypes.GeneratePrivateKey()
 	if err != nil {
-		return Peer{}, errors.Wrap(err, "failed to generate private key")
+		return wireguard.Peer{}, errors.Wrap(err, "failed to generate private key")
 	}
 	peer.PresharedKey = psk.String()
 	peer.PrivateKey = key.String()
@@ -46,54 +50,39 @@ func (s *Server) PrepareNewPeer() (Peer, error) {
 	return peer, nil
 }
 
-func (s *Server) CreatePeerByEmail(email, identifierSuffix string, disabled bool) error {
+// CreatePeerByEmail creates a new peer for the given email. If no user with the specified email was found, a new one
+// will be created.
+func (s *Server) CreatePeerByEmail(device, email, identifierSuffix string, disabled bool) error {
 	user, err := s.users.GetOrCreateUser(email)
 	if err != nil {
 		return errors.WithMessagef(err, "failed to load/create related user %s", email)
 	}
 
-	device := s.peers.GetDevice()
+	peer, err := s.PrepareNewPeer(device)
-	peer := Peer{}
-	peer.User = user
-	peer.AllowedIPsStr = device.AllowedIPsStr
-	peer.IPs = make([]string, len(device.IPs))
-	for i := range device.IPs {
-		freeIP, err := s.peers.GetAvailableIp(device.IPs[i])
-		if err != nil {
-			return errors.WithMessage(err, "failed to get available IP addresses")
-		}
-		peer.IPs[i] = freeIP
-	}
-	peer.IPsStr = common.ListToString(peer.IPs)
-	psk, err := wgtypes.GenerateKey()
 	if err != nil {
-		return errors.Wrap(err, "failed to generate key")
+		return errors.WithMessage(err, "failed to prepare new peer")
 	}
-	key, err := wgtypes.GeneratePrivateKey()
-	if err != nil {
-		return errors.Wrap(err, "failed to generate private key")
-	}
-	peer.PresharedKey = psk.String()
-	peer.PrivateKey = key.String()
-	peer.PublicKey = key.PublicKey().String()
-	peer.UID = fmt.Sprintf("u%x", md5.Sum([]byte(peer.PublicKey)))
 	peer.Email = email
 	peer.Identifier = fmt.Sprintf("%s %s (%s)", user.Firstname, user.Lastname, identifierSuffix)
+
 	now := time.Now()
 	if disabled {
 		peer.DeactivatedAt = &now
 	}
 
-	return s.CreatePeer(peer)
+	return s.CreatePeer(device, peer)
 }
 
-func (s *Server) CreatePeer(peer Peer) error {
+// CreatePeer creates the new peer in the database. If the peer has no assigned ip addresses, a new one will be assigned
-	device := s.peers.GetDevice()
+// automatically. Also, if the private key is empty, a new key-pair will be generated.
-	peer.AllowedIPsStr = device.AllowedIPsStr
+// This function also configures the new peer on the physical WireGuard interface if the peer is not deactivated.
+func (s *Server) CreatePeer(device string, peer wireguard.Peer) error {
+	dev := s.peers.GetDevice(device)
+	peer.AllowedIPsStr = dev.AllowedIPsStr
 	if peer.IPs == nil || len(peer.IPs) == 0 {
-		peer.IPs = make([]string, len(device.IPs))
+		peer.IPs = make([]string, len(dev.IPs))
-		for i := range device.IPs {
+		for i := range dev.IPs {
-			freeIP, err := s.peers.GetAvailableIp(device.IPs[i])
+			freeIP, err := s.peers.GetAvailableIp(device, dev.IPs[i])
 			if err != nil {
 				return errors.WithMessage(err, "failed to get available IP addresses")
 			}
@@ -114,11 +103,12 @@ func (s *Server) CreatePeer(peer Peer) error {
 		peer.PrivateKey = key.String()
 		peer.PublicKey = key.PublicKey().String()
 	}
+	peer.DeviceName = dev.DeviceName
 	peer.UID = fmt.Sprintf("u%x", md5.Sum([]byte(peer.PublicKey)))
 
 	// Create WireGuard interface
 	if peer.DeactivatedAt == nil {
-		if err := s.wg.AddPeer(peer.GetConfig()); err != nil {
+		if err := s.wg.AddPeer(device, peer.GetConfig()); err != nil {
 			return errors.WithMessage(err, "failed to add WireGuard peer")
 		}
 	}
@@ -128,21 +118,22 @@ func (s *Server) CreatePeer(peer Peer) error {
 		return errors.WithMessage(err, "failed to create peer")
 	}
 
-	return s.WriteWireGuardConfigFile()
+	return s.WriteWireGuardConfigFile(device)
 }
 
-func (s *Server) UpdatePeer(peer Peer, updateTime time.Time) error {
+// UpdatePeer updates the physical WireGuard interface and the database.
+func (s *Server) UpdatePeer(peer wireguard.Peer, updateTime time.Time) error {
 	currentPeer := s.peers.GetPeerByKey(peer.PublicKey)
 
 	// Update WireGuard device
 	var err error
 	switch {
 	case peer.DeactivatedAt == &updateTime:
-		err = s.wg.RemovePeer(peer.PublicKey)
+		err = s.wg.RemovePeer(peer.DeviceName, peer.PublicKey)
 	case peer.DeactivatedAt == nil && currentPeer.Peer != nil:
-		err = s.wg.UpdatePeer(peer.GetConfig())
+		err = s.wg.UpdatePeer(peer.DeviceName, peer.GetConfig())
 	case peer.DeactivatedAt == nil && currentPeer.Peer == nil:
-		err = s.wg.AddPeer(peer.GetConfig())
+		err = s.wg.AddPeer(peer.DeviceName, peer.GetConfig())
 	}
 	if err != nil {
 		return errors.WithMessage(err, "failed to update WireGuard peer")
@@ -153,12 +144,13 @@ func (s *Server) UpdatePeer(peer Peer, updateTime time.Time) error {
 		return errors.WithMessage(err, "failed to update peer")
 	}
 
-	return s.WriteWireGuardConfigFile()
+	return s.WriteWireGuardConfigFile(peer.DeviceName)
 }
 
-func (s *Server) DeletePeer(peer Peer) error {
+// DeletePeer removes the peer from the physical WireGuard interface and the database.
+func (s *Server) DeletePeer(peer wireguard.Peer) error {
 	// Delete WireGuard peer
-	if err := s.wg.RemovePeer(peer.PublicKey); err != nil {
+	if err := s.wg.RemovePeer(peer.DeviceName, peer.PublicKey); err != nil {
 		return errors.WithMessage(err, "failed to remove WireGuard peer")
 	}
 
@@ -167,15 +159,16 @@ func (s *Server) DeletePeer(peer Peer) error {
 		return errors.WithMessage(err, "failed to remove peer")
 	}
 
-	return s.WriteWireGuardConfigFile()
+	return s.WriteWireGuardConfigFile(peer.DeviceName)
 }
 
-func (s *Server) RestoreWireGuardInterface() error {
+// RestoreWireGuardInterface restores the state of the physical WireGuard interface from the database.
-	activePeers := s.peers.GetActivePeers()
+func (s *Server) RestoreWireGuardInterface(device string) error {
+	activePeers := s.peers.GetActivePeers(device)
 
 	for i := range activePeers {
 		if activePeers[i].Peer == nil {
-			if err := s.wg.AddPeer(activePeers[i].GetConfig()); err != nil {
+			if err := s.wg.AddPeer(device, activePeers[i].GetConfig()); err != nil {
 				return errors.WithMessage(err, "failed to add WireGuard peer")
 			}
 		}
@@ -184,26 +177,29 @@ func (s *Server) RestoreWireGuardInterface() error {
 	return nil
 }
 
-func (s *Server) WriteWireGuardConfigFile() error {
+// WriteWireGuardConfigFile writes the configuration file for the physical WireGuard interface.
-	if s.config.WG.WireGuardConfig == "" {
+func (s *Server) WriteWireGuardConfigFile(device string) error {
+	if s.config.WG.ConfigDirectoryPath == "" {
 		return nil // writing disabled
 	}
-	if err := syscall.Access(s.config.WG.WireGuardConfig, syscall.O_RDWR); err != nil {
+	if err := syscall.Access(s.config.WG.ConfigDirectoryPath, syscall.O_RDWR); err != nil {
 		return errors.Wrap(err, "failed to check WireGuard config access rights")
 	}
 
-	device := s.peers.GetDevice()
+	dev := s.peers.GetDevice(device)
-	cfg, err := device.GetConfigFile(s.peers.GetActivePeers())
+	cfg, err := dev.GetConfigFile(s.peers.GetActivePeers(device))
 	if err != nil {
 		return errors.WithMessage(err, "failed to get config file")
 	}
-	if err := ioutil.WriteFile(s.config.WG.WireGuardConfig, cfg, 0644); err != nil {
+	filePath := path.Join(s.config.WG.ConfigDirectoryPath, dev.DeviceName+".conf")
+	if err := ioutil.WriteFile(filePath, cfg, 0644); err != nil {
 		return errors.Wrap(err, "failed to write WireGuard config file")
 	}
 	return nil
 }
 
-func (s *Server) CreateUser(user users.User) error {
+// CreateUser creates the user in the database and optionally adds a default WireGuard peer for the user.
+func (s *Server) CreateUser(user users.User, device string) error {
 	if user.Email == "" {
 		return errors.New("cannot create user with empty email address")
 	}
@@ -220,9 +216,11 @@ func (s *Server) CreateUser(user users.User) error {
 	}
 
 	// Check if user already has a peer setup, if not, create one
-	return s.CreateUserDefaultPeer(user.Email)
+	return s.CreateUserDefaultPeer(user.Email, device)
 }
 
+// UpdateUser updates the user in the database. If the user is marked as deleted, it will get remove from the database.
+// Also, if the user is re-enabled, all it's linked WireGuard peers will be activated again.
 func (s *Server) UpdateUser(user users.User) error {
 	if user.DeletedAt.Valid {
 		return s.DeleteUser(user)
@@ -249,6 +247,8 @@ func (s *Server) UpdateUser(user users.User) error {
 	return nil
 }
 
+// DeleteUser removes the user from the database.
+// Also, if the user has linked WireGuard peers, they will be deactivated.
 func (s *Server) DeleteUser(user users.User) error {
 	currentUser := s.users.GetUserUnscoped(user.Email)
 
@@ -271,7 +271,7 @@ func (s *Server) DeleteUser(user users.User) error {
 	return nil
 }
 
-func (s *Server) CreateUserDefaultPeer(email string) error {
+func (s *Server) CreateUserDefaultPeer(email, device string) error {
 	// Check if user is active, if not, quit
 	var existingUser *users.User
 	if existingUser = s.users.GetUser(email); existingUser == nil {
@@ -282,7 +282,7 @@ func (s *Server) CreateUserDefaultPeer(email string) error {
 	if s.config.Core.CreateDefaultPeer {
 		peers := s.peers.GetPeersByMail(email)
 		if len(peers) == 0 { // Create default vpn peer
-			if err := s.CreatePeer(Peer{
+			if err := s.CreatePeer(device, wireguard.Peer{
 				Identifier: existingUser.Firstname + " " + existingUser.Lastname + " (Default)",
 				Email:      existingUser.Email,
 				CreatedBy:  existingUser.Email,

internal/users/config.go

@@ -1,17 +0,0 @@
-package users
-
-type SupportedDatabase string
-
-const (
-	SupportedDatabaseMySQL  SupportedDatabase = "mysql"
-	SupportedDatabaseSQLite SupportedDatabase = "sqlite"
-)
-
-type Config struct {
-	Typ      SupportedDatabase `yaml:"typ" envconfig:"DATABASE_TYPE"` //mysql or sqlite
-	Host     string            `yaml:"host" envconfig:"DATABASE_HOST"`
-	Port     int               `yaml:"port" envconfig:"DATABASE_PORT"`
-	Database string            `yaml:"database" envconfig:"DATABASE_NAME"` // On SQLite: the database file-path, otherwise the database name
-	User     string            `yaml:"user" envconfig:"DATABASE_USERNAME"`
-	Password string            `yaml:"password" envconfig:"DATABASE_PASSWORD"`
-}

internal/users/manager.go

@@ -1,9 +1,6 @@
 package users
 
 import (
-	"fmt"
-	"os"
-	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
@@ -11,69 +8,15 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
-	"gorm.io/driver/mysql"
-	"gorm.io/driver/sqlite"
 	"gorm.io/gorm"
-	"gorm.io/gorm/logger"
 )
 
-func GetDatabaseForConfig(cfg *Config) (db *gorm.DB, err error) {
-	switch cfg.Typ {
-	case SupportedDatabaseSQLite:
-		if _, err = os.Stat(filepath.Dir(cfg.Database)); os.IsNotExist(err) {
-			if err = os.MkdirAll(filepath.Dir(cfg.Database), 0700); err != nil {
-				return
-			}
-		}
-		db, err = gorm.Open(sqlite.Open(cfg.Database), &gorm.Config{})
-		if err != nil {
-			return
-		}
-	case SupportedDatabaseMySQL:
-		connectionString := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local", cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.Database)
-		db, err = gorm.Open(mysql.Open(connectionString), &gorm.Config{})
-		if err != nil {
-			return
-		}
-
-		sqlDB, _ := db.DB()
-		sqlDB.SetConnMaxLifetime(time.Minute * 5)
-		sqlDB.SetMaxIdleConns(2)
-		sqlDB.SetMaxOpenConns(10)
-		err = sqlDB.Ping() // This DOES open a connection if necessary. This makes sure the database is accessible
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to ping mysql authentication database")
-		}
-	}
-
-	// Enable Logger (logrus)
-	logCfg := logger.Config{
-		SlowThreshold: time.Second, // all slower than one second
-		Colorful:      false,
-		LogLevel:      logger.Silent, // default: log nothing
-	}
-
-	if logrus.StandardLogger().GetLevel() == logrus.TraceLevel {
-		logCfg.LogLevel = logger.Info
-		logCfg.SlowThreshold = 500 * time.Millisecond // all slower than half a second
-	}
-
-	db.Config.Logger = logger.New(logrus.StandardLogger(), logCfg)
-	return
-}
-
 type Manager struct {
 	db *gorm.DB
 }
 
-func NewManager(cfg *Config) (*Manager, error) {
+func NewManager(db *gorm.DB) (*Manager, error) {
-	m := &Manager{}
+	m := &Manager{db: db}
-
-	var err error
-	m.db, err = GetDatabaseForConfig(cfg)
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to setup user database %s", cfg.Database)
-	}
 
 	// check if old user table exists (from version <= 1.0.2), if so rename it to peers.
 	if m.db.Migrator().HasTable("users") && !m.db.Migrator().HasTable("peers") {
@@ -84,14 +27,11 @@ func NewManager(cfg *Config) (*Manager, error) {
 		}
 	}
 
-	return m, m.MigrateUserDB()
-}
-
-func (m Manager) MigrateUserDB() error {
 	if err := m.db.AutoMigrate(&User{}); err != nil {
-		return errors.Wrap(err, "failed to migrate user database")
+		return nil, errors.Wrap(err, "failed to migrate user database")
 	}
-	return nil
+
+	return m, nil
 }
 
 func (m Manager) GetUsers() []User {

internal/wireguard/config.go

@@ -1,7 +1,8 @@
 package wireguard
 
 type Config struct {
-	DeviceName        string `yaml:"device" envconfig:"WG_DEVICE"`
+	DeviceNames         []string `yaml:"devices" envconfig:"WG_DEVICES"`             // managed devices
-	WireGuardConfig   string `yaml:"configFile" envconfig:"WG_CONFIG_FILE"`    // optional, if set, updates will be written to this file
+	DefaultDeviceName   string   `yaml:"devices" envconfig:"WG_DEFAULT_DEVICE"`      // this device is used for auto-created peers
-	ManageIPAddresses bool   `yaml:"manageIPAddresses" envconfig:"MANAGE_IPS"` // handle ip-address setup of interface
+	ConfigDirectoryPath string   `yaml:"configDirectory" envconfig:"WG_CONFIG_PATH"` // optional, if set, updates will be written to this path, filename: <devicename>.conf
+	ManageIPAddresses   bool     `yaml:"manageIPAddresses" envconfig:"MANAGE_IPS"`   // handle ip-address setup of interface
 }

internal/wireguard/manager.go

@@ -9,6 +9,7 @@ import (
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )
 
+// Manager offers a synchronized management interface to the real WireGuard interface.
 type Manager struct {
 	Cfg *Config
 	wg  *wgctrl.Client
@@ -25,8 +26,8 @@ func (m *Manager) Init() error {
 	return nil
 }
 
-func (m *Manager) GetDeviceInfo() (*wgtypes.Device, error) {
+func (m *Manager) GetDeviceInfo(device string) (*wgtypes.Device, error) {
-	dev, err := m.wg.Device(m.Cfg.DeviceName)
+	dev, err := m.wg.Device(device)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get WireGuard device")
 	}
@@ -34,11 +35,11 @@ func (m *Manager) GetDeviceInfo() (*wgtypes.Device, error) {
 	return dev, nil
 }
 
-func (m *Manager) GetPeerList() ([]wgtypes.Peer, error) {
+func (m *Manager) GetPeerList(device string) ([]wgtypes.Peer, error) {
 	m.mux.RLock()
 	defer m.mux.RUnlock()
 
-	dev, err := m.wg.Device(m.Cfg.DeviceName)
+	dev, err := m.wg.Device(device)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get WireGuard device")
 	}
@@ -46,7 +47,7 @@ func (m *Manager) GetPeerList() ([]wgtypes.Peer, error) {
 	return dev.Peers, nil
 }
 
-func (m *Manager) GetPeer(pubKey string) (*wgtypes.Peer, error) {
+func (m *Manager) GetPeer(device string, pubKey string) (*wgtypes.Peer, error) {
 	m.mux.RLock()
 	defer m.mux.RUnlock()
 
@@ -55,7 +56,7 @@ func (m *Manager) GetPeer(pubKey string) (*wgtypes.Peer, error) {
 		return nil, errors.Wrap(err, "invalid public key")
 	}
 
-	peers, err := m.GetPeerList()
+	peers, err := m.GetPeerList(device)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get WireGuard peers")
 	}
@@ -69,11 +70,11 @@ func (m *Manager) GetPeer(pubKey string) (*wgtypes.Peer, error) {
 	return nil, errors.Errorf("could not find WireGuard peer: %s", pubKey)
 }
 
-func (m *Manager) AddPeer(cfg wgtypes.PeerConfig) error {
+func (m *Manager) AddPeer(device string, cfg wgtypes.PeerConfig) error {
 	m.mux.Lock()
 	defer m.mux.Unlock()
 
-	err := m.wg.ConfigureDevice(m.Cfg.DeviceName, wgtypes.Config{Peers: []wgtypes.PeerConfig{cfg}})
+	err := m.wg.ConfigureDevice(device, wgtypes.Config{Peers: []wgtypes.PeerConfig{cfg}})
 	if err != nil {
 		return errors.Wrap(err, "could not configure WireGuard device")
 	}
@@ -81,12 +82,12 @@ func (m *Manager) AddPeer(cfg wgtypes.PeerConfig) error {
 	return nil
 }
 
-func (m *Manager) UpdatePeer(cfg wgtypes.PeerConfig) error {
+func (m *Manager) UpdatePeer(device string, cfg wgtypes.PeerConfig) error {
 	m.mux.Lock()
 	defer m.mux.Unlock()
 
 	cfg.UpdateOnly = true
-	err := m.wg.ConfigureDevice(m.Cfg.DeviceName, wgtypes.Config{Peers: []wgtypes.PeerConfig{cfg}})
+	err := m.wg.ConfigureDevice(device, wgtypes.Config{Peers: []wgtypes.PeerConfig{cfg}})
 	if err != nil {
 		return errors.Wrap(err, "could not configure WireGuard device")
 	}
@@ -94,7 +95,7 @@ func (m *Manager) UpdatePeer(cfg wgtypes.PeerConfig) error {
 	return nil
 }
 
-func (m *Manager) RemovePeer(pubKey string) error {
+func (m *Manager) RemovePeer(device string, pubKey string) error {
 	m.mux.Lock()
 	defer m.mux.Unlock()
 
@@ -108,7 +109,7 @@ func (m *Manager) RemovePeer(pubKey string) error {
 		Remove:    true,
 	}
 
-	err = m.wg.ConfigureDevice(m.Cfg.DeviceName, wgtypes.Config{Peers: []wgtypes.PeerConfig{peer}})
+	err = m.wg.ConfigureDevice(device, wgtypes.Config{Peers: []wgtypes.PeerConfig{peer}})
 	if err != nil {
 		return errors.Wrap(err, "could not configure WireGuard device")
 	}
@@ -116,6 +117,6 @@ func (m *Manager) RemovePeer(pubKey string) error {
 	return nil
 }
 
-func (m *Manager) UpdateDevice(name string, cfg wgtypes.Config) error {
+func (m *Manager) UpdateDevice(device string, cfg wgtypes.Config) error {
-	return m.wg.ConfigureDevice(name, cfg)
+	return m.wg.ConfigureDevice(device, cfg)
 }

internal/wireguard/manager_net.go

@@ -11,10 +11,10 @@ import (
 
 const DefaultMTU = 1420
 
-func (m *Manager) GetIPAddress() ([]string, error) {
+func (m *Manager) GetIPAddress(device string) ([]string, error) {
-	wgInterface, err := tenus.NewLinkFrom(m.Cfg.DeviceName)
+	wgInterface, err := tenus.NewLinkFrom(device)
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not retrieve WireGuard interface %s", m.Cfg.DeviceName)
+		return nil, errors.Wrapf(err, "could not retrieve WireGuard interface %s", device)
 	}
 
 	// Get golang net.interface
@@ -52,14 +52,14 @@ func (m *Manager) GetIPAddress() ([]string, error) {
 	return ipAddresses, nil
 }
 
-func (m *Manager) SetIPAddress(cidrs []string) error {
+func (m *Manager) SetIPAddress(device string, cidrs []string) error {
-	wgInterface, err := tenus.NewLinkFrom(m.Cfg.DeviceName)
+	wgInterface, err := tenus.NewLinkFrom(device)
 	if err != nil {
-		return errors.Wrapf(err, "could not retrieve WireGuard interface %s", m.Cfg.DeviceName)
+		return errors.Wrapf(err, "could not retrieve WireGuard interface %s", device)
 	}
 
 	// First remove existing IP addresses
-	existingIPs, err := m.GetIPAddress()
+	existingIPs, err := m.GetIPAddress(device)
 	if err != nil {
 		return errors.Wrap(err, "could not retrieve IP addresses")
 	}
@@ -89,10 +89,10 @@ func (m *Manager) SetIPAddress(cidrs []string) error {
 	return nil
 }
 
-func (m *Manager) GetMTU() (int, error) {
+func (m *Manager) GetMTU(device string) (int, error) {
-	wgInterface, err := tenus.NewLinkFrom(m.Cfg.DeviceName)
+	wgInterface, err := tenus.NewLinkFrom(device)
 	if err != nil {
-		return 0, errors.Wrapf(err, "could not retrieve WireGuard interface %s", m.Cfg.DeviceName)
+		return 0, errors.Wrapf(err, "could not retrieve WireGuard interface %s", device)
 	}
 
 	// Get golang net.interface
@@ -104,10 +104,10 @@ func (m *Manager) GetMTU() (int, error) {
 	return iface.MTU, nil
 }
 
-func (m *Manager) SetMTU(mtu int) error {
+func (m *Manager) SetMTU(device string, mtu int) error {
-	wgInterface, err := tenus.NewLinkFrom(m.Cfg.DeviceName)
+	wgInterface, err := tenus.NewLinkFrom(device)
 	if err != nil {
-		return errors.Wrapf(err, "could not retrieve WireGuard interface %s", m.Cfg.DeviceName)
+		return errors.Wrapf(err, "could not retrieve WireGuard interface %s", device)
 	}
 
 	if mtu == 0 {
@@ -115,7 +115,7 @@ func (m *Manager) SetMTU(mtu int) error {
 	}
 
 	if err := wgInterface.SetLinkMTU(mtu); err != nil {
-		return errors.Wrapf(err, "could not set MTU on interface %s", m.Cfg.DeviceName)
+		return errors.Wrapf(err, "could not set MTU on interface %s", device)
 	}
 
 	return nil

internal/wireguard/peermanager.go

@@ -1,4 +1,4 @@
-package server
+package wireguard
 
 import (
 	"bytes"
@@ -15,8 +15,6 @@ import (
 	"github.com/gin-gonic/gin/binding"
 	"github.com/go-playground/validator/v10"
 	"github.com/h44z/wg-portal/internal/common"
-	"github.com/h44z/wg-portal/internal/users"
-	"github.com/h44z/wg-portal/internal/wireguard"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/skip2/go-qrcode"
@@ -66,7 +64,6 @@ func init() {
 
 type Peer struct {
 	Peer   *wgtypes.Peer `gorm:"-"` // WireGuard peer
-	User   *users.User   `gorm:"-"` // user reference for the peer
 	Config string        `gorm:"-"`
 
 	UID               string `form:"uid" binding:"alphanum"` // uid for html identification
@@ -85,6 +82,7 @@ type Peer struct {
 	IPs                       []string `gorm:"-"` // The IPs of the client
 	PrivateKey                string   `form:"privkey" binding:"omitempty,base64"`
 	PublicKey                 string   `gorm:"primaryKey" form:"pubkey" binding:"required,base64"`
+	DeviceName                string   `gorm:"index"`
 
 	DeactivatedAt *time.Time
 	CreatedBy     string
@@ -122,7 +120,7 @@ func (p Peer) GetConfig() wgtypes.PeerConfig {
 }
 
 func (p Peer) GetConfigFile(device Device) ([]byte, error) {
-	tpl, err := template.New("client").Funcs(template.FuncMap{"StringsJoin": strings.Join}).Parse(wireguard.ClientCfgTpl)
+	tpl, err := template.New("client").Funcs(template.FuncMap{"StringsJoin": strings.Join}).Parse(ClientCfgTpl)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to parse client template")
 	}
@@ -245,7 +243,7 @@ func (d Device) GetConfig() wgtypes.Config {
 }
 
 func (d Device) GetConfigFile(peers []Peer) ([]byte, error) {
-	tpl, err := template.New("server").Funcs(template.FuncMap{"StringsJoin": strings.Join}).Parse(wireguard.DeviceCfgTpl)
+	tpl, err := template.New("server").Funcs(template.FuncMap{"StringsJoin": strings.Join}).Parse(DeviceCfgTpl)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to parse server template")
 	}
@@ -271,63 +269,61 @@ func (d Device) GetConfigFile(peers []Peer) ([]byte, error) {
 //
 
 type PeerManager struct {
-	db    *gorm.DB
+	db *gorm.DB
-	wg    *wireguard.Manager
+	wg *Manager
-	users *users.Manager
 }
 
-func NewPeerManager(cfg *common.Config, wg *wireguard.Manager, userDB *users.Manager) (*PeerManager, error) {
+func NewPeerManager(db *gorm.DB, wg *Manager) (*PeerManager, error) {
-	um := &PeerManager{wg: wg, users: userDB}
+	um := &PeerManager{db: db, wg: wg}
-	var err error
-	um.db, err = users.GetDatabaseForConfig(&cfg.Database)
-	if err != nil {
-		return nil, errors.WithMessage(err, "failed to open peer database")
-	}
 
-	err = um.db.AutoMigrate(&Peer{}, &Device{})
+	if err := um.db.AutoMigrate(&Peer{}, &Device{}); err != nil {
-	if err != nil {
 		return nil, errors.WithMessage(err, "failed to migrate peer database")
 	}
 
 	return um, nil
 }
 
-func (u *PeerManager) InitFromCurrentInterface() error {
+// InitFromPhysicalInterface read all WireGuard peers from the WireGuard interface configuration. If a peer does not
-	peers, err := u.wg.GetPeerList()
+// exist in the local database, it gets created.
-	if err != nil {
+func (m *PeerManager) InitFromPhysicalInterface() error {
-		return errors.Wrapf(err, "failed to get peer list")
+	for _, deviceName := range m.wg.Cfg.DeviceNames {
-	}
+		peers, err := m.wg.GetPeerList(deviceName)
-	device, err := u.wg.GetDeviceInfo()
+		if err != nil {
-	if err != nil {
+			return errors.Wrapf(err, "failed to get peer list for device %s", deviceName)
-		return errors.Wrapf(err, "failed to get device info")
-	}
-	var ipAddresses []string
-	var mtu int
-	if u.wg.Cfg.ManageIPAddresses {
-		if ipAddresses, err = u.wg.GetIPAddress(); err != nil {
-			return errors.Wrapf(err, "failed to get ip address")
 		}
-		if mtu, err = u.wg.GetMTU(); err != nil {
+		device, err := m.wg.GetDeviceInfo(deviceName)
-			return errors.Wrapf(err, "failed to get MTU")
+		if err != nil {
+			return errors.Wrapf(err, "failed to get device info for device %s", deviceName)
+		}
+		var ipAddresses []string
+		var mtu int
+		if m.wg.Cfg.ManageIPAddresses {
+			if ipAddresses, err = m.wg.GetIPAddress(deviceName); err != nil {
+				return errors.Wrapf(err, "failed to get ip address for device %s", deviceName)
+			}
+			if mtu, err = m.wg.GetMTU(deviceName); err != nil {
+				return errors.Wrapf(err, "failed to get MTU for device %s", deviceName)
+			}
 		}
-	}
 
-	// Check if entries already exist in database, if not create them
+		// Check if entries already exist in database, if not create them
-	for _, peer := range peers {
+		for _, peer := range peers {
-		if err := u.validateOrCreatePeer(peer); err != nil {
+			if err := m.validateOrCreatePeer(deviceName, peer); err != nil {
-			return errors.WithMessagef(err, "failed to validate peer %s", peer.PublicKey)
+				return errors.WithMessagef(err, "failed to validate peer %s for device %s", peer.PublicKey, deviceName)
+			}
+		}
+		if err := m.validateOrCreateDevice(*device, ipAddresses, mtu); err != nil {
+			return errors.WithMessagef(err, "failed to validate device %s", device.Name)
 		}
-	}
-	if err := u.validateOrCreateDevice(*device, ipAddresses, mtu); err != nil {
-		return errors.WithMessagef(err, "failed to validate device %s", device.Name)
 	}
 
 	return nil
 }
 
-func (u *PeerManager) validateOrCreatePeer(wgPeer wgtypes.Peer) error {
+// validateOrCreatePeer checks if the given WireGuard peer already exists in the database, if not, the peer entry will be created
+func (m *PeerManager) validateOrCreatePeer(device string, wgPeer wgtypes.Peer) error {
 	peer := Peer{}
-	u.db.Where("public_key = ?", wgPeer.PublicKey.String()).FirstOrInit(&peer)
+	m.db.Where("public_key = ?", wgPeer.PublicKey.String()).FirstOrInit(&peer)
 
 	if peer.PublicKey == "" { // peer not found, create
 		peer.UID = fmt.Sprintf("u%x", md5.Sum([]byte(wgPeer.PublicKey.String())))
@@ -347,8 +343,9 @@ func (u *PeerManager) validateOrCreatePeer(wgPeer wgtypes.Peer) error {
 		}
 		peer.AllowedIPsStr = strings.Join(peer.AllowedIPs, ", ")
 		peer.IPsStr = strings.Join(peer.IPs, ", ")
+		peer.DeviceName = device
 
-		res := u.db.Create(&peer)
+		res := m.db.Create(&peer)
 		if res.Error != nil {
 			return errors.Wrapf(res.Error, "failed to create autodetected peer %s", peer.PublicKey)
 		}
@@ -357,9 +354,10 @@ func (u *PeerManager) validateOrCreatePeer(wgPeer wgtypes.Peer) error {
 	return nil
 }
 
-func (u *PeerManager) validateOrCreateDevice(dev wgtypes.Device, ipAddresses []string, mtu int) error {
+// validateOrCreateDevice checks if the given WireGuard device already exists in the database, if not, the peer entry will be created
+func (m *PeerManager) validateOrCreateDevice(dev wgtypes.Device, ipAddresses []string, mtu int) error {
 	device := Device{}
-	u.db.Where("device_name = ?", dev.Name).FirstOrInit(&device)
+	m.db.Where("device_name = ?", dev.Name).FirstOrInit(&device)
 
 	if device.PublicKey == "" { // device not found, create
 		device.PublicKey = dev.PublicKey.String()
@@ -369,12 +367,12 @@ func (u *PeerManager) validateOrCreateDevice(dev wgtypes.Device, ipAddresses []s
 		device.Mtu = 0
 		device.PersistentKeepalive = 16 // Default
 		device.IPsStr = strings.Join(ipAddresses, ", ")
-		if mtu == wireguard.DefaultMTU {
+		if mtu == DefaultMTU {
 			mtu = 0
 		}
 		device.Mtu = mtu
 
-		res := u.db.Create(&device)
+		res := m.db.Create(&device)
 		if res.Error != nil {
 			return errors.Wrapf(res.Error, "failed to create autodetected device")
 		}
@@ -383,21 +381,22 @@ func (u *PeerManager) validateOrCreateDevice(dev wgtypes.Device, ipAddresses []s
 	return nil
 }
 
-func (u *PeerManager) populatePeerData(peer *Peer) {
+// populatePeerData enriches the peer struct with WireGuard live data like last handshake, ...
+func (m *PeerManager) populatePeerData(peer *Peer) {
 	peer.AllowedIPs = strings.Split(peer.AllowedIPsStr, ", ")
 	peer.IPs = strings.Split(peer.IPsStr, ", ")
 	// Set config file
-	tmpCfg, _ := peer.GetConfigFile(u.GetDevice())
+	tmpCfg, _ := peer.GetConfigFile(m.GetDevice(peer.DeviceName))
 	peer.Config = string(tmpCfg)
 
 	// set data from WireGuard interface
-	peer.Peer, _ = u.wg.GetPeer(peer.PublicKey)
+	peer.Peer, _ = m.wg.GetPeer(peer.DeviceName, peer.PublicKey)
 	peer.LastHandshake = "never"
 	peer.LastHandshakeTime = "Never connected, or user is disabled."
 	if peer.Peer != nil {
 		since := time.Since(peer.Peer.LastHandshakeTime)
 		sinceSeconds := int(since.Round(time.Second).Seconds())
-		sinceMinutes := int(sinceSeconds / 60)
+		sinceMinutes := sinceSeconds / 60
 		sinceSeconds -= sinceMinutes * 60
 
 		if sinceMinutes > 2*10080 { // 2 weeks
@@ -410,49 +409,47 @@ func (u *PeerManager) populatePeerData(peer *Peer) {
 		peer.LastHandshakeTime = peer.Peer.LastHandshakeTime.Format(time.UnixDate)
 	}
 	peer.IsOnline = false
-
-	// set user data
-	peer.User = u.users.GetUser(peer.Email)
 }
 
-func (u *PeerManager) populateDeviceData(device *Device) {
+// populateDeviceData enriches the device struct with WireGuard live data like interface information
+func (m *PeerManager) populateDeviceData(device *Device) {
 	device.AllowedIPs = strings.Split(device.AllowedIPsStr, ", ")
 	device.IPs = strings.Split(device.IPsStr, ", ")
 	device.DNS = strings.Split(device.DNSStr, ", ")
 
 	// set data from WireGuard interface
-	device.Interface, _ = u.wg.GetDeviceInfo()
+	device.Interface, _ = m.wg.GetDeviceInfo(device.DeviceName)
 }
 
-func (u *PeerManager) GetAllPeers() []Peer {
+func (m *PeerManager) GetAllPeers(device string) []Peer {
 	peers := make([]Peer, 0)
-	u.db.Find(&peers)
+	m.db.Where("device_name = ?", device).Find(&peers)
 
 	for i := range peers {
-		u.populatePeerData(&peers[i])
+		m.populatePeerData(&peers[i])
 	}
 
 	return peers
 }
 
-func (u *PeerManager) GetActivePeers() []Peer {
+func (m *PeerManager) GetActivePeers(device string) []Peer {
 	peers := make([]Peer, 0)
-	u.db.Where("deactivated_at IS NULL").Find(&peers)
+	m.db.Where("device_name = ? AND deactivated_at IS NULL", device).Find(&peers)
 
 	for i := range peers {
-		u.populatePeerData(&peers[i])
+		m.populatePeerData(&peers[i])
 	}
 
 	return peers
 }
 
-func (u *PeerManager) GetFilteredAndSortedPeers(sortKey, sortDirection, search string) []Peer {
+func (m *PeerManager) GetFilteredAndSortedPeers(device, sortKey, sortDirection, search string) []Peer {
 	peers := make([]Peer, 0)
-	u.db.Find(&peers)
+	m.db.Where("device_name = ?", device).Find(&peers)
 
 	filteredPeers := make([]Peer, 0, len(peers))
 	for i := range peers {
-		u.populatePeerData(&peers[i])
+		m.populatePeerData(&peers[i])
 
 		if search == "" ||
 			strings.Contains(peers[i].Email, search) ||
@@ -499,12 +496,12 @@ func (u *PeerManager) GetFilteredAndSortedPeers(sortKey, sortDirection, search s
 	return filteredPeers
 }
 
-func (u *PeerManager) GetSortedPeersForEmail(sortKey, sortDirection, email string) []Peer {
+func (m *PeerManager) GetSortedPeersForEmail(sortKey, sortDirection, email string) []Peer {
 	peers := make([]Peer, 0)
-	u.db.Where("email = ?", email).Find(&peers)
+	m.db.Where("email = ?", email).Find(&peers)
 
 	for i := range peers {
-		u.populatePeerData(&peers[i])
+		m.populatePeerData(&peers[i])
 	}
 
 	sort.Slice(peers, func(i, j int) bool {
@@ -544,42 +541,42 @@ func (u *PeerManager) GetSortedPeersForEmail(sortKey, sortDirection, email strin
 	return peers
 }
 
-func (u *PeerManager) GetDevice() Device {
+func (m *PeerManager) GetDevice(device string) Device {
-	devices := make([]Device, 0, 1)
+	dev := Device{}
-	u.db.Find(&devices)
 
-	for i := range devices {
+	m.db.Where("device_name = ?", device).First(&dev)
-		u.populateDeviceData(&devices[i])
+	m.populateDeviceData(&dev)
-	}
 
-	return devices[0] // use first device for now... more to come?
+	return dev
 }
 
-func (u *PeerManager) GetPeerByKey(publicKey string) Peer {
+func (m *PeerManager) GetPeerByKey(publicKey string) Peer {
 	peer := Peer{}
-	u.db.Where("public_key = ?", publicKey).FirstOrInit(&peer)
+	m.db.Where("public_key = ?", publicKey).FirstOrInit(&peer)
-	u.populatePeerData(&peer)
+	m.populatePeerData(&peer)
 	return peer
 }
 
-func (u *PeerManager) GetPeersByMail(mail string) []Peer {
+func (m *PeerManager) GetPeersByMail(mail string) []Peer {
 	var peers []Peer
-	u.db.Where("email = ?", mail).Find(&peers)
+	m.db.Where("email = ?", mail).Find(&peers)
 	for i := range peers {
-		u.populatePeerData(&peers[i])
+		m.populatePeerData(&peers[i])
 	}
 
 	return peers
 }
 
-func (u *PeerManager) CreatePeer(peer Peer) error {
+// ---- Database helpers -----
+
+func (m *PeerManager) CreatePeer(peer Peer) error {
 	peer.UID = fmt.Sprintf("u%x", md5.Sum([]byte(peer.PublicKey)))
 	peer.UpdatedAt = time.Now()
 	peer.CreatedAt = time.Now()
 	peer.AllowedIPsStr = strings.Join(peer.AllowedIPs, ", ")
 	peer.IPsStr = strings.Join(peer.IPs, ", ")
 
-	res := u.db.Create(&peer)
+	res := m.db.Create(&peer)
 	if res.Error != nil {
 		logrus.Errorf("failed to create peer: %v", res.Error)
 		return errors.Wrap(res.Error, "failed to create peer")
@@ -588,12 +585,12 @@ func (u *PeerManager) CreatePeer(peer Peer) error {
 	return nil
 }
 
-func (u *PeerManager) UpdatePeer(peer Peer) error {
+func (m *PeerManager) UpdatePeer(peer Peer) error {
 	peer.UpdatedAt = time.Now()
 	peer.AllowedIPsStr = strings.Join(peer.AllowedIPs, ", ")
 	peer.IPsStr = strings.Join(peer.IPs, ", ")
 
-	res := u.db.Save(&peer)
+	res := m.db.Save(&peer)
 	if res.Error != nil {
 		logrus.Errorf("failed to update peer: %v", res.Error)
 		return errors.Wrap(res.Error, "failed to update peer")
@@ -602,8 +599,8 @@ func (u *PeerManager) UpdatePeer(peer Peer) error {
 	return nil
 }
 
-func (u *PeerManager) DeletePeer(peer Peer) error {
+func (m *PeerManager) DeletePeer(peer Peer) error {
-	res := u.db.Delete(&peer)
+	res := m.db.Delete(&peer)
 	if res.Error != nil {
 		logrus.Errorf("failed to delete peer: %v", res.Error)
 		return errors.Wrap(res.Error, "failed to delete peer")
@@ -612,13 +609,13 @@ func (u *PeerManager) DeletePeer(peer Peer) error {
 	return nil
 }
 
-func (u *PeerManager) UpdateDevice(device Device) error {
+func (m *PeerManager) UpdateDevice(device Device) error {
 	device.UpdatedAt = time.Now()
 	device.AllowedIPsStr = strings.Join(device.AllowedIPs, ", ")
 	device.IPsStr = strings.Join(device.IPs, ", ")
 	device.DNSStr = strings.Join(device.DNS, ", ")
 
-	res := u.db.Save(&device)
+	res := m.db.Save(&device)
 	if res.Error != nil {
 		logrus.Errorf("failed to update device: %v", res.Error)
 		return errors.Wrap(res.Error, "failed to update device")
@@ -627,9 +624,11 @@ func (u *PeerManager) UpdateDevice(device Device) error {
 	return nil
 }
 
-func (u *PeerManager) GetAllReservedIps() ([]string, error) {
+// ---- IP helpers ----
+
+func (m *PeerManager) GetAllReservedIps(device string) ([]string, error) {
 	reservedIps := make([]string, 0)
-	peers := u.GetAllPeers()
+	peers := m.GetAllPeers(device)
 	for _, user := range peers {
 		for _, cidr := range user.IPs {
 			if cidr == "" {
@@ -643,8 +642,8 @@ func (u *PeerManager) GetAllReservedIps() ([]string, error) {
 		}
 	}
 
-	device := u.GetDevice()
+	dev := m.GetDevice(device)
-	for _, cidr := range device.IPs {
+	for _, cidr := range dev.IPs {
 		if cidr == "" {
 			continue
 		}
@@ -659,8 +658,8 @@ func (u *PeerManager) GetAllReservedIps() ([]string, error) {
 	return reservedIps, nil
 }
 
-func (u *PeerManager) IsIPReserved(cidr string) bool {
+func (m *PeerManager) IsIPReserved(device string, cidr string) bool {
-	reserved, err := u.GetAllReservedIps()
+	reserved, err := m.GetAllReservedIps(device)
 	if err != nil {
 		return true // in case something failed, assume the ip is reserved
 	}
@@ -688,10 +687,10 @@ func (u *PeerManager) IsIPReserved(cidr string) bool {
 }
 
 // GetAvailableIp search for an available ip in cidr against a list of reserved ips
-func (u *PeerManager) GetAvailableIp(cidr string) (string, error) {
+func (m *PeerManager) GetAvailableIp(device string, cidr string) (string, error) {
-	reserved, err := u.GetAllReservedIps()
+	reserved, err := m.GetAllReservedIps(device)
 	if err != nil {
-		return "", errors.WithMessage(err, "failed to get all reserved IP addresses")
+		return "", errors.WithMessagef(err, "failed to get all reserved IP addresses for %s", device)
 	}
 	ip, ipnet, err := net.ParseCIDR(cidr)
 	if err != nil {