mirror of
https://github.com/netbirdio/netbird.git
synced 2024-11-08 01:04:47 +01:00
445 lines
12 KiB
Go
445 lines
12 KiB
Go
package cmd
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import (
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"crypto/tls"
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"errors"
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"flag"
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"fmt"
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httpapi "github.com/netbirdio/netbird/management/server/http"
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"golang.org/x/crypto/acme/autocert"
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"golang.org/x/net/http2"
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"golang.org/x/net/http2/h2c"
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"io"
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"io/fs"
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"io/ioutil"
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"net"
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"net/http"
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"os"
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"path"
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"strings"
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"time"
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"github.com/netbirdio/netbird/management/server"
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"github.com/netbirdio/netbird/management/server/idp"
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"github.com/netbirdio/netbird/util"
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"github.com/netbirdio/netbird/encryption"
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mgmtProto "github.com/netbirdio/netbird/management/proto"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/keepalive"
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)
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// ManagementLegacyPort is the port that was used before by the Management gRPC server.
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// It is used for backward compatibility now.
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const ManagementLegacyPort = 33073
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var (
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mgmtPort int
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mgmtLetsencryptDomain string
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certFile string
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certKey string
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config *server.Config
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kaep = keepalive.EnforcementPolicy{
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MinTime: 15 * time.Second,
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PermitWithoutStream: true,
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}
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kasp = keepalive.ServerParameters{
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MaxConnectionIdle: 15 * time.Second,
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MaxConnectionAgeGrace: 5 * time.Second,
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Time: 5 * time.Second,
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Timeout: 2 * time.Second,
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}
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mgmtCmd = &cobra.Command{
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Use: "management",
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Short: "start NetBird Management Server",
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PreRunE: func(cmd *cobra.Command, args []string) error {
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// detect whether user specified a port
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userPort := cmd.Flag("port").Changed
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var err error
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config, err = loadMgmtConfig(mgmtConfig)
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if err != nil {
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return fmt.Errorf("failed reading provided config file: %s: %v", mgmtConfig, err)
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}
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tlsEnabled := false
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if mgmtLetsencryptDomain != "" || (config.HttpConfig.CertFile != "" && config.HttpConfig.CertKey != "") {
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tlsEnabled = true
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}
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if !userPort {
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// different defaults for port when tls enabled/disabled
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if tlsEnabled {
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mgmtPort = 443
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} else {
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mgmtPort = 80
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}
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}
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return nil
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},
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RunE: func(cmd *cobra.Command, args []string) error {
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flag.Parse()
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err := util.InitLog(logLevel, logFile)
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if err != nil {
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return fmt.Errorf("failed initializing log %v", err)
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}
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err = handleRebrand(cmd)
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if err != nil {
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return fmt.Errorf("failed to migrate files %v", err)
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}
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if _, err = os.Stat(config.Datadir); os.IsNotExist(err) {
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err = os.MkdirAll(config.Datadir, os.ModeDir)
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if err != nil {
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return fmt.Errorf("failed creating datadir: %s: %v", config.Datadir, err)
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}
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}
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store, err := server.NewStore(config.Datadir)
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if err != nil {
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return fmt.Errorf("failed creating Store: %s: %v", config.Datadir, err)
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}
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peersUpdateManager := server.NewPeersUpdateManager()
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var idpManager idp.Manager
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if config.IdpManagerConfig != nil {
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idpManager, err = idp.NewManager(*config.IdpManagerConfig)
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if err != nil {
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return fmt.Errorf("failed retrieving a new idp manager with err: %v", err)
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}
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}
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accountManager, err := server.BuildManager(store, peersUpdateManager, idpManager)
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if err != nil {
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return fmt.Errorf("failed to build default manager: %v", err)
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}
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turnManager := server.NewTimeBasedAuthSecretsManager(peersUpdateManager, config.TURNConfig)
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gRPCOpts := []grpc.ServerOption{grpc.KeepaliveEnforcementPolicy(kaep), grpc.KeepaliveParams(kasp)}
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var certManager *autocert.Manager
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var tlsConfig *tls.Config
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tlsEnabled := false
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if config.HttpConfig.LetsEncryptDomain != "" {
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certManager, err = encryption.CreateCertManager(config.Datadir, config.HttpConfig.LetsEncryptDomain)
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if err != nil {
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return fmt.Errorf("failed creating LetsEncrypt cert manager: %v", err)
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}
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transportCredentials := credentials.NewTLS(certManager.TLSConfig())
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gRPCOpts = append(gRPCOpts, grpc.Creds(transportCredentials))
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tlsEnabled = true
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} else if config.HttpConfig.CertFile != "" && config.HttpConfig.CertKey != "" {
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tlsConfig, err = loadTLSConfig(config.HttpConfig.CertFile, config.HttpConfig.CertKey)
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if err != nil {
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log.Errorf("cannot load TLS credentials: %v", err)
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return err
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}
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transportCredentials := credentials.NewTLS(tlsConfig)
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gRPCOpts = append(gRPCOpts, grpc.Creds(transportCredentials))
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tlsEnabled = true
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}
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httpAPIHandler, err := httpapi.APIHandler(accountManager,
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config.HttpConfig.AuthIssuer, config.HttpConfig.AuthAudience, config.HttpConfig.AuthKeysLocation)
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if err != nil {
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return fmt.Errorf("failed creating HTTP API handler: %v", err)
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}
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gRPCAPIHandler := grpc.NewServer(gRPCOpts...)
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srv, err := server.NewServer(config, accountManager, peersUpdateManager, turnManager)
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if err != nil {
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return fmt.Errorf("failed creating gRPC API handler: %v", err)
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}
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mgmtProto.RegisterManagementServiceServer(gRPCAPIHandler, srv)
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var compatListener net.Listener
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if mgmtPort != ManagementLegacyPort {
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// The Management gRPC server was running on port 33073 previously. Old agents that are already connected to it
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// are using port 33073. For compatibility purposes we keep running a 2nd gRPC server on port 33073.
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compatListener, err = serveGRPC(gRPCAPIHandler, ManagementLegacyPort)
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if err != nil {
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return err
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}
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log.Infof("running gRPC backward compatibility server: %s", compatListener.Addr().String())
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}
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rootHandler := handlerFunc(gRPCAPIHandler, httpAPIHandler)
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var listener net.Listener
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if certManager != nil {
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// a call to certManager.Listener() always creates a new listener so we do it once
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cml := certManager.Listener()
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if mgmtPort == 443 {
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// CertManager, HTTP and gRPC API all on the same port
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rootHandler = certManager.HTTPHandler(rootHandler)
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listener = cml
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} else {
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listener, err = tls.Listen("tcp", fmt.Sprintf(":%d", mgmtPort), certManager.TLSConfig())
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if err != nil {
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return fmt.Errorf("failed creating TLS listener on port %d: %v", mgmtPort, err)
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}
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log.Infof("running HTTP server (LetsEncrypt challenge handler): %s", cml.Addr().String())
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serveHTTP(cml, certManager.HTTPHandler(nil))
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}
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} else if tlsConfig != nil {
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listener, err = tls.Listen("tcp", fmt.Sprintf(":%d", mgmtPort), tlsConfig)
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if err != nil {
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return fmt.Errorf("failed creating TLS listener on port %d: %v", mgmtPort, err)
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}
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} else {
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listener, err = net.Listen("tcp", fmt.Sprintf(":%d", mgmtPort))
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if err != nil {
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return fmt.Errorf("failed creating TCP listener on port %d: %v", mgmtPort, err)
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}
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}
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log.Infof("running HTTP server and gRPC server on the same port: %s", listener.Addr().String())
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serveGRPCWithHTTP(listener, rootHandler, tlsEnabled)
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SetupCloseHandler()
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<-stopCh
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_ = listener.Close()
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if certManager != nil {
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_ = certManager.Listener().Close()
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}
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gRPCAPIHandler.Stop()
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log.Infof("stopped Management Service")
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return nil
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},
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}
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)
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func notifyStop(msg string) {
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select {
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case stopCh <- 1:
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log.Error(msg)
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default:
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// stop has been already called, nothing to report
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}
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}
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func serveGRPC(grpcServer *grpc.Server, port int) (net.Listener, error) {
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listener, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
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if err != nil {
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return nil, err
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}
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go func() {
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err := grpcServer.Serve(listener)
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if err != nil {
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notifyStop(fmt.Sprintf("failed running gRPC server on port %d: %v", port, err))
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}
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}()
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return listener, nil
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}
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func serveHTTP(httpListener net.Listener, handler http.Handler) {
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go func() {
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err := http.Serve(httpListener, handler)
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if err != nil {
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notifyStop(fmt.Sprintf("failed running HTTP server: %v", err))
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}
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}()
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}
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func serveGRPCWithHTTP(listener net.Listener, handler http.Handler, tlsEnabled bool) {
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go func() {
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var err error
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if tlsEnabled {
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err = http.Serve(listener, handler)
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} else {
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// the following magic is needed to support HTTP2 without TLS
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// and still share a single port between gRPC and HTTP APIs
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h1s := &http.Server{
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Handler: h2c.NewHandler(handler, &http2.Server{}),
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}
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err = h1s.Serve(listener)
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}
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if err != nil {
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select {
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case stopCh <- 1:
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log.Errorf("failed to serve HTTP and gRPC server: %v", err)
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default:
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// stop has been already called, nothing to report
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}
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}
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}()
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}
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func handlerFunc(gRPCHandler *grpc.Server, httpHandler http.Handler) http.Handler {
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return http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
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grpcHeader := strings.HasPrefix(request.Header.Get("Content-Type"), "application/grpc") ||
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strings.HasPrefix(request.Header.Get("Content-Type"), "application/grpc+proto")
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if request.ProtoMajor == 2 && grpcHeader {
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gRPCHandler.ServeHTTP(writer, request)
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} else {
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httpHandler.ServeHTTP(writer, request)
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}
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})
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}
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func loadMgmtConfig(mgmtConfigPath string) (*server.Config, error) {
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config := &server.Config{}
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_, err := util.ReadJson(mgmtConfigPath, config)
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if err != nil {
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return nil, err
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}
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if mgmtLetsencryptDomain != "" {
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config.HttpConfig.LetsEncryptDomain = mgmtLetsencryptDomain
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}
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if mgmtDataDir != "" {
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config.Datadir = mgmtDataDir
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}
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if certKey != "" && certFile != "" {
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config.HttpConfig.CertFile = certFile
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config.HttpConfig.CertKey = certKey
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}
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return config, err
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}
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func loadTLSConfig(certFile string, certKey string) (*tls.Config, error) {
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// Load server's certificate and private key
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serverCert, err := tls.LoadX509KeyPair(certFile, certKey)
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if err != nil {
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return nil, err
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}
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// Create the credentials and return it
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config := &tls.Config{
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Certificates: []tls.Certificate{serverCert},
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ClientAuth: tls.NoClientCert,
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}
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return config, nil
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}
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func handleRebrand(cmd *cobra.Command) error {
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var err error
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if logFile == defaultLogFile {
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if migrateToNetbird(oldDefaultLogFile, defaultLogFile) {
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cmd.Printf("will copy Log dir %s and its content to %s\n", oldDefaultLogDir, defaultLogDir)
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err = cpDir(oldDefaultLogDir, defaultLogDir)
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if err != nil {
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return err
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}
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}
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}
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if mgmtConfig == defaultMgmtConfig {
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if migrateToNetbird(oldDefaultMgmtConfig, defaultMgmtConfig) {
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cmd.Printf("will copy Config dir %s and its content to %s\n", oldDefaultMgmtConfigDir, defaultMgmtConfigDir)
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err = cpDir(oldDefaultMgmtConfigDir, defaultMgmtConfigDir)
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if err != nil {
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return err
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}
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}
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}
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if mgmtDataDir == defaultMgmtDataDir {
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if migrateToNetbird(oldDefaultMgmtDataDir, defaultMgmtDataDir) {
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cmd.Printf("will copy Config dir %s and its content to %s\n", oldDefaultMgmtDataDir, defaultMgmtDataDir)
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err = cpDir(oldDefaultMgmtDataDir, defaultMgmtDataDir)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func cpFile(src, dst string) error {
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var err error
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var srcfd *os.File
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var dstfd *os.File
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var srcinfo os.FileInfo
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if srcfd, err = os.Open(src); err != nil {
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return err
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}
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defer srcfd.Close()
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if dstfd, err = os.Create(dst); err != nil {
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return err
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}
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defer dstfd.Close()
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if _, err = io.Copy(dstfd, srcfd); err != nil {
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return err
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}
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if srcinfo, err = os.Stat(src); err != nil {
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return err
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}
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return os.Chmod(dst, srcinfo.Mode())
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}
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func copySymLink(source, dest string) error {
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link, err := os.Readlink(source)
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if err != nil {
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return err
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}
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return os.Symlink(link, dest)
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}
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func cpDir(src string, dst string) error {
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var err error
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var fds []os.FileInfo
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var srcinfo os.FileInfo
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if srcinfo, err = os.Stat(src); err != nil {
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return err
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}
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if err = os.MkdirAll(dst, srcinfo.Mode()); err != nil {
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return err
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}
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if fds, err = ioutil.ReadDir(src); err != nil {
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return err
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}
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for _, fd := range fds {
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srcfp := path.Join(src, fd.Name())
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dstfp := path.Join(dst, fd.Name())
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fileInfo, err := os.Stat(srcfp)
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if err != nil {
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log.Fatalf("Couldn't get fileInfo; %v", err)
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}
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switch fileInfo.Mode() & os.ModeType {
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case os.ModeSymlink:
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if err = copySymLink(srcfp, dstfp); err != nil {
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log.Fatalf("Failed to copy from %s to %s; %v", srcfp, dstfp, err)
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}
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case os.ModeDir:
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if err = cpDir(srcfp, dstfp); err != nil {
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log.Fatalf("Failed to copy from %s to %s; %v", srcfp, dstfp, err)
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}
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default:
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if err = cpFile(srcfp, dstfp); err != nil {
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log.Fatalf("Failed to copy from %s to %s; %v", srcfp, dstfp, err)
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}
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}
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}
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return nil
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}
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func migrateToNetbird(oldPath, newPath string) bool {
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_, errOld := os.Stat(oldPath)
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_, errNew := os.Stat(newPath)
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if errors.Is(errOld, fs.ErrNotExist) || errNew == nil {
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return false
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}
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return true
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}
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