database: add boltdb backend, Storage interface

database/boltdb.go

@@ -0,0 +1,209 @@
+package database
+
+import (
+	"errors"
+	"time"
+
+	"github.com/Xe/uuid"
+	"github.com/asdine/storm"
+	"github.com/brandur/simplebox"
+	"golang.org/x/net/context"
+)
+
+// Database errors
+var (
+	ErrNotImplemented     = errors.New("database: not implemented")
+	ErrInvalidKind        = errors.New("database: invalid route kind")
+	ErrNoSuchToken        = errors.New("database: no such token")
+	ErrCantDecryptCert    = errors.New("database: can't decrypt cert")
+	ErrUnknownCryptMethod = errors.New("database: unknown encryption method")
+)
+
+// BoltDBStorage is a backend that uses https://github.com/boltdb/bolt to store
+// route data.
+type BoltDBStorage struct {
+	db *storm.DB
+	sb *simplebox.SimpleBox
+}
+
+// NewBoltStorage creates a new Storage instance backed by BoltDB + Storm.
+func NewBoltStorage(path string, key *[32]byte) (Storage, error) {
+	db, err := storm.Open(path)
+	if err != nil {
+		return nil, err
+	}
+
+	b := &BoltDBStorage{
+		db: db,
+		sb: simplebox.NewFromSecretKey(key),
+	}
+
+	return Storage(b), nil
+}
+
+// interface compliance
+var (
+	_ Storage = &BoltDBStorage{}
+)
+
+// GetRoute gets a single route out of the database.
+func (b *BoltDBStorage) GetRoute(ctx context.Context, host string) (Route, error) {
+	r := Route{}
+	err := b.db.One("Hostname", host, &r)
+	return r, err
+}
+
+// GetAllRoutes gets all routes out of the database.
+func (b *BoltDBStorage) GetAllRoutes(ctx context.Context) ([]Route, error) {
+	rs := []Route{}
+	err := b.db.All(&rs)
+	return rs, err
+}
+
+// PutRoute creates a new route in the database.
+func (b *BoltDBStorage) PutRoute(ctx context.Context, domain, kind string) (Route, error) {
+	switch kind {
+	case "tcp", "http":
+		// empty case, do nothing
+	default:
+		return Route{}, ErrInvalidKind
+	}
+
+	r := Route{
+		ID:       uuid.New(),
+		Creator:  ctx.Value("creator").(string),
+		Hostname: domain,
+	}
+
+	err := b.db.Save(&r)
+	if err != nil {
+		return Route{}, err
+	}
+
+	return r, nil
+}
+
+// DeleteRoute removes a route from the database.
+func (b *BoltDBStorage) DeleteRoute(ctx context.Context, id string) error {
+	r := Route{}
+	err := b.db.One("ID", id, &r)
+	if err != nil {
+		return err
+	}
+
+	return b.db.DeleteStruct(&r)
+}
+
+// GetToken fetches a token from the database. This is mainly used in validation
+// of tokens.
+func (b *BoltDBStorage) GetToken(ctx context.Context, token string) (Token, error) {
+	t := Token{}
+	err := b.db.One("Body", token, &t)
+	return t, err
+}
+
+// GetTokensForOwner fetches all of the tokens owned by a given owner.
+func (b *BoltDBStorage) GetTokensForOwner(ctx context.Context, owner string) ([]Token, error) {
+	ts := []Token{}
+	err := b.db.Find("Owner", owner, &ts)
+	return ts, err
+}
+
+// PutToken adds a new token to the database.
+func (b *BoltDBStorage) PutToken(ctx context.Context, token, owner string, scopes []string) (Token, error) {
+	t := Token{
+		ID:     uuid.New(),
+		Body:   token,
+		Owner:  owner,
+		Scopes: scopes,
+
+		CreatedAt: time.Now(),
+		Active:    true,
+	}
+
+	err := b.db.Save(&t)
+	if err != nil {
+		return Token{}, err
+	}
+
+	return t, nil
+}
+
+// DeleteToken removes a token from the database.
+func (b *BoltDBStorage) DeleteToken(ctx context.Context, id string) error {
+	t := Token{}
+	err := b.db.One("ID", id, &t)
+	if err != nil {
+		return err
+	}
+
+	return b.db.DeleteStruct(&t)
+}
+
+// DeactivateToken de-activates a token in the database. This should be used
+// instead of deletion in many cases.
+func (b *BoltDBStorage) DeactivateToken(ctx context.Context, id string) error {
+	t := Token{}
+	err := b.db.One("ID", id, &t)
+	if err != nil {
+		return err
+	}
+
+	t.Active = false
+
+	return b.db.Save(&t)
+}
+
+// GetCert fetches a TLS certificate from the database.
+func (b *BoltDBStorage) GetCert(ctx context.Context, key string) ([]byte, error) {
+	cc := CachedCert{}
+	err := b.db.One("Key", key, &cc)
+	if err != nil {
+		return nil, err
+	}
+
+	var body []byte
+
+	switch cc.CryptoLevel {
+	case CryptoLevelNone:
+		body = cc.Body
+	case CryptoLevelSecretbox:
+		if b.sb == nil {
+			return nil, ErrCantDecryptCert
+		}
+
+		body, err = b.sb.Decrypt(cc.Body)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return body, nil
+}
+
+// PutCert adds a new TLS certificate to the database.
+func (b *BoltDBStorage) PutCert(ctx context.Context, key string, data []byte) error {
+	cc := CachedCert{
+		Key:         key,
+		CryptoLevel: CryptoLevelNone,
+		Body:        data,
+	}
+
+	if b.sb != nil {
+		cc.CryptoLevel = CryptoLevelSecretbox
+		cc.Body = b.sb.Encrypt(data)
+	}
+
+	return b.db.Save(&cc)
+}
+
+// DeleteCert removes a certificate from the database.
+func (b *BoltDBStorage) DeleteCert(ct context.Context, key string) error {
+	cc := CachedCert{}
+	err := b.db.One("Key", key, &cc)
+	if err != nil {
+		return err
+	}
+
+	return b.db.DeleteStruct(&cc)
+}

database/certcache.go

@@ -32,7 +32,7 @@ const (
 
 // CachedCert is an individual cached certificate in the database.
 type CachedCert struct {
-	Key         string      `gorethink:"id"`
+	Key         string      `gorethink:"id" storm:"id"`
 	CryptoLevel CryptoLevel `gorethink:"cryptoLevel"`
 	// PEM-encoded bytes with the above crypto level as a filter.
 	Body []byte `gorethink:"body"`

database/db.go

@@ -1,10 +1,7 @@
 package database
 
 import (
-	"crypto/rsa"
-
 	"git.xeserv.us/xena/route/routerpc"
-	"git.xeserv.us/xena/route/utils"
 	r "github.com/GoRethink/gorethink"
 )
 
@@ -35,24 +32,20 @@ var tables = []string{
 	"routes",
 }
 
-// Route is a single route object serialized to rethinkdb.
+// Route is a single HTTP route.
 type Route struct {
-	ID            string `gorethink:"id,omitempty"`
-	Hostname      string `gorethink:"hostname"`
-	OnionHostname string `gorethink:"onionhostname"`
-	Token         string `gorethink:"token"`
-	OnionKey      []byte `gorethink:"onionKey"` // PEM-encoded
+	ID       string `gorethink:"id,omitempty" storm:"id"`
+	Creator  string
+	Hostname string `gorethink:"hostname" storm:"index"`
+
+	Token string `gorethink:"token" storm:"-"` // deprecated
 }
 
 // SaveRoute adds the route to the database.
 func (db *DB) SaveRoute(resp *routerpc.AddHostResponse) error {
-	bytes := utils.RSAPrivateKeyToPem(resp.PrivKey.(*rsa.PrivateKey))
-
 	rt := &Route{
-		Hostname:      resp.Hostname,
-		OnionHostname: resp.OnionHostname,
-		Token:         resp.Token,
-		OnionKey:      bytes,
+		Hostname: resp.Hostname,
+		Token:    resp.Token,
 	}
 
 	// TODO: check if OnionHostname or Hostname actually exists in

database/storage.go

@@ -0,0 +1,50 @@
+package database
+
+import (
+	"golang.org/x/crypto/acme/autocert"
+	"golang.org/x/net/context"
+)
+
+// Storage is the parent interface for the database backends of route.
+type Storage interface {
+	// routes
+	GetRoute(ctx context.Context, host string) (Route, error)
+	GetAllRoutes(ctx context.Context) ([]Route, error)
+	PutRoute(ctx context.Context, domain, kind string) (Route, error)
+	DeleteRoute(ctx context.Context, id string) error
+
+	// tokens
+	GetToken(ctx context.Context, token string) (Token, error)
+	GetTokensForOwner(ctx context.Context, owner string) ([]Token, error)
+	PutToken(ctx context.Context, token, owner string, scopes []string) (Token, error)
+	DeleteToken(ctx context.Context, id string) error
+	DeactivateToken(ctx context.Context, id string) error
+
+	// certificates
+	GetCert(ctx context.Context, key string) ([]byte, error)
+	PutCert(ctx context.Context, key string, data []byte) error
+	DeleteCert(ctx context.Context, key string) error
+}
+
+type storageManager struct {
+	Storage
+}
+
+func (s *storageManager) Get(ctx context.Context, key string) ([]byte, error) {
+	return s.GetCert(ctx, key)
+}
+
+func (s *storageManager) Put(ctx context.Context, key string, data []byte) error {
+	return s.PutCert(ctx, key, data)
+}
+
+func (s *storageManager) Delete(ctx context.Context, key string) error {
+	return s.DeleteCert(ctx, key)
+}
+
+// Cache creates an autocert.Cache from a Storage instance.
+func Cache(s Storage) autocert.Cache {
+	return autocert.Cache(&storageManager{
+		Storage: s,
+	})
+}

database/token.go

@@ -0,0 +1,14 @@
+package database
+
+import "time"
+
+// Token is a single authorization token.
+type Token struct {
+	ID     string `storm:"id"`
+	Body   string `storm:"unique"`
+	Owner  string `storm:"index"`
+	Scopes []string
+
+	CreatedAt time.Time `json:"created_at"`
+	Active    bool      `json:"active"`
+}