Make unit testable cert parsing functions. (#3863)

cmd/config-dir.go

@@ -0,0 +1,139 @@
+/*
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"path/filepath"
+	"sync"
+
+	homedir "github.com/minio/go-homedir"
+	"github.com/minio/mc/pkg/console"
+)
+
+const (
+	// Default minio configuration directory where below configuration files/directories are stored.
+	defaultMinioConfigDir = ".minio"
+
+	// Minio configuration file.
+	minioConfigFile = "config.json"
+
+	// Directory contains below files/directories for HTTPS configuration.
+	certsDir = "certs"
+
+	// Directory contains all CA certificates other than system defaults for HTTPS.
+	certsCADir = "CAs"
+
+	// Public certificate file for HTTPS.
+	publicCertFile = "public.crt"
+
+	// Private key file for HTTPS.
+	privateKeyFile = "private.key"
+)
+
+// ConfigDir - configuration directory with locking.
+type ConfigDir struct {
+	sync.Mutex
+	dir string
+}
+
+// Set - saves given directory as configuration directory.
+func (config *ConfigDir) Set(dir string) {
+	config.Lock()
+	defer config.Unlock()
+
+	config.dir = dir
+}
+
+// Get - returns current configuration directory.
+func (config *ConfigDir) Get() string {
+	config.Lock()
+	defer config.Unlock()
+
+	return config.dir
+}
+
+func (config *ConfigDir) getCertsDir() string {
+	return filepath.Join(config.Get(), certsDir)
+}
+
+// GetCADir - returns certificate CA directory.
+func (config *ConfigDir) GetCADir() string {
+	return filepath.Join(config.getCertsDir(), certsCADir)
+}
+
+// Create - creates configuration directory tree.
+func (config *ConfigDir) Create() error {
+	return mkdirAll(config.GetCADir(), 0700)
+}
+
+// GetMinioConfigFile - returns absolute path of config.json file.
+func (config *ConfigDir) GetMinioConfigFile() string {
+	return filepath.Join(config.Get(), minioConfigFile)
+}
+
+// GetPublicCertFile - returns absolute path of public.crt file.
+func (config *ConfigDir) GetPublicCertFile() string {
+	return filepath.Join(config.getCertsDir(), publicCertFile)
+}
+
+// GetPrivateKeyFile - returns absolute path of private.key file.
+func (config *ConfigDir) GetPrivateKeyFile() string {
+	return filepath.Join(config.getCertsDir(), privateKeyFile)
+}
+
+func mustGetDefaultConfigDir() string {
+	homeDir, err := homedir.Dir()
+	if err != nil {
+		console.Fatalln("Unable to get home directory.", err)
+	}
+
+	return filepath.Join(homeDir, defaultMinioConfigDir)
+}
+
+var configDir = &ConfigDir{dir: mustGetDefaultConfigDir()}
+
+func setConfigDir(dir string) {
+	configDir.Set(dir)
+}
+
+func getConfigDir() string {
+	return configDir.Get()
+}
+
+func getCADir() string {
+	return configDir.GetCADir()
+}
+
+func createConfigDir() error {
+	return configDir.Create()
+}
+
+func getConfigFile() string {
+	return configDir.GetMinioConfigFile()
+}
+
+func getPublicCertFile() string {
+	return configDir.GetPublicCertFile()
+}
+
+func getPrivateKeyFile() string {
+	return configDir.GetPrivateKeyFile()
+}
+
+func isConfigFileExists() bool {
+	return isFile(getConfigFile())
+}