Fix delegation key import/export GUN inference logic

CHANGELOG.md

@@ -1,7 +1,8 @@
 # Changelog
 
-## [v0.4.3](https://github.com/docker/notary/releases/tag/v0.4.3) 11/15/2016
+## [v0.4.3](https://github.com/docker/notary/releases/tag/v0.4.3) 1/3/2017
 + Fix build tags for static notary client binaries in linux [#1039](https://github.com/docker/notary/pull/1039)
++ Fix key import for exported delegation keys [#1067](https://github.com/docker/notary/pull/1067)
 
 ## [v0.4.2](https://github.com/docker/notary/releases/tag/v0.4.2) 9/30/2016
 + Bump the cross compiler to golang 1.7.1, since [1.6.3 builds binaries that could have non-deterministic bugs in OS X Sierra](https://groups.google.com/forum/#!msg/golang-dev/Jho5sBHZgAg/cq6d97S1AwAJ) [#984](https://github.com/docker/notary/pull/984)

cmd/notary/integration_test.go

@@ -2562,3 +2562,43 @@ func TestExportImportFlow(t *testing.T) {
 	require.Contains(t, targString, "gun: gun")
 	require.True(t, strings.Contains(snapString, "role: snapshot") || strings.Contains(snapString, "role: target"))
 }
+
+// Tests import/export keys with delegations, which don't require a gun
+func TestDelegationKeyImportExport(t *testing.T) {
+	// -- setup --
+	setUp(t)
+
+	tempDir := tempDirWithConfig(t, "{}")
+	defer os.RemoveAll(tempDir)
+
+	tempExportedDir := tempDirWithConfig(t, "{}")
+	defer os.RemoveAll(tempDir)
+
+	tempImportingDir := tempDirWithConfig(t, "{}")
+	defer os.RemoveAll(tempDir)
+
+	// Setup key in a file for import
+	keyFile, err := ioutil.TempFile("", "pemfile")
+	require.NoError(t, err)
+	defer os.Remove(keyFile.Name())
+	privKey, err := utils.GenerateRSAKey(rand.Reader, 2048)
+	require.NoError(t, err)
+	pemBytes, err := utils.EncryptPrivateKey(privKey, "", "", "")
+	require.NoError(t, err)
+	nBytes, err := keyFile.Write(pemBytes)
+	require.NoError(t, err)
+	keyFile.Close()
+	require.Equal(t, len(pemBytes), nBytes)
+
+	// import the key
+	_, err = runCommand(t, tempDir, "key", "import", keyFile.Name(), "-r", "user")
+	require.NoError(t, err)
+
+	// export the key
+	_, err = runCommand(t, tempDir, "key", "export", "-o", filepath.Join(tempExportedDir, "exported"))
+	require.NoError(t, err)
+
+	// re-import the key from the exported store to a new tempDir
+	_, err = runCommand(t, tempImportingDir, "key", "import", filepath.Join(tempExportedDir, "exported"))
+	require.NoError(t, err)
+}

utils/keys.go

@@ -4,15 +4,16 @@ import (
 	"encoding/pem"
 	"errors"
 	"fmt"
-	"github.com/Sirupsen/logrus"
-	"github.com/docker/notary"
-	tufdata "github.com/docker/notary/tuf/data"
-	"github.com/docker/notary/tuf/utils"
 	"io"
 	"io/ioutil"
 	"path/filepath"
 	"sort"
 	"strings"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/docker/notary"
+	tufdata "github.com/docker/notary/tuf/data"
+	"github.com/docker/notary/tuf/utils"
 )
 
 // Exporter is a simple interface for the two functions we need from the Storage interface
@@ -110,8 +111,8 @@ func ImportKeys(from io.Reader, to []Importer, fallbackRole string, fallbackGun
 		if rawPath := block.Headers["path"]; rawPath != "" {
 			pathWOFileName := strings.TrimSuffix(rawPath, filepath.Base(rawPath))
 			if strings.HasPrefix(pathWOFileName, notary.NonRootKeysSubdir) {
-				gunName := strings.TrimPrefix(pathWOFileName, notary.NonRootKeysSubdir)
-				gunName = gunName[1:(len(gunName) - 1)] // remove the slashes
+				// remove the notary keystore-specific segment of the path, and any potential leading or trailing slashes
+				gunName := strings.Trim(strings.TrimPrefix(pathWOFileName, notary.NonRootKeysSubdir), "/")
 				if gunName != "" {
 					block.Headers["gun"] = gunName
 				}

utils/keys_test.go

@@ -5,14 +5,15 @@ import (
 	"crypto/rand"
 	"encoding/pem"
 	"errors"
-	"github.com/docker/notary"
-	"github.com/docker/notary/tuf/data"
-	"github.com/docker/notary/tuf/utils"
-	"github.com/stretchr/testify/require"
 	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
+
+	"github.com/docker/notary"
+	"github.com/docker/notary/tuf/data"
+	"github.com/docker/notary/tuf/utils"
+	"github.com/stretchr/testify/require"
 )
 
 const cannedPassphrase = "passphrase"
@@ -363,8 +364,8 @@ func TestBlockHeaderPrecedenceGunFromPath(t *testing.T) {
 		require.Equal(t, key, filepath.Join(notary.NonRootKeysSubdir, "anothergun", "12ba0e0a8e05e177bc2c3489bdb6d28836879469f078e68a4812fc8a2d521497"))
 		final, rest := pem.Decode(s.data[key])
 		require.Len(t, rest, 0)
-		require.Equal(t, final.Headers["role"], "snapshot")
-		require.Equal(t, final.Headers["gun"], "anothergun")
+		require.Equal(t, "snapshot", final.Headers["role"])
+		require.Equal(t, "anothergun", final.Headers["gun"])
 	}
 }