Add server side signaturev4 check, not wired up to the readers yet.

pkg/auth/config.go

@@ -0,0 +1,97 @@
+/*
+ * Minimalist Object Storage, (C) 2015 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 auth
+
+import (
+	"os/user"
+	"path/filepath"
+
+	"github.com/minio/minio/pkg/iodine"
+	"github.com/minio/minio/pkg/quick"
+)
+
+// User container
+type User struct {
+	Name            string
+	AccessKeyID     string
+	SecretAccessKey string
+}
+
+// Config auth keys
+type Config struct {
+	Version string
+	Users   map[string]User
+}
+
+// getAuthConfigPath get donut config file path
+func getAuthConfigPath() (string, error) {
+	u, err := user.Current()
+	if err != nil {
+		return "", iodine.New(err, nil)
+	}
+	authConfigPath := filepath.Join(u.HomeDir, ".minio", "users.json")
+	return authConfigPath, nil
+}
+
+// NOTE - this is not thread safe use it carefully, currently its purpose is only for testing purposes.
+var CustomConfigPath string
+
+// SaveConfig save donut config
+func SaveConfig(a *Config) error {
+	var authConfigPath string
+	var err error
+	if CustomConfigPath != "" {
+		authConfigPath = CustomConfigPath
+	} else {
+		authConfigPath, err = getAuthConfigPath()
+		if err != nil {
+			return iodine.New(err, nil)
+		}
+	}
+	qc, err := quick.New(a)
+	if err != nil {
+		return iodine.New(err, nil)
+	}
+	if err := qc.Save(authConfigPath); err != nil {
+		return iodine.New(err, nil)
+	}
+	return nil
+}
+
+// LoadConfig load donut config
+func LoadConfig() (*Config, error) {
+	var authConfigPath string
+	var err error
+	if CustomConfigPath != "" {
+		authConfigPath = CustomConfigPath
+	} else {
+		authConfigPath, err = getAuthConfigPath()
+		if err != nil {
+			return nil, iodine.New(err, nil)
+		}
+	}
+	a := &Config{}
+	a.Version = "0.0.1"
+	qc, err := quick.New(a)
+	if err != nil {
+		return nil, iodine.New(err, nil)
+	}
+	if err := qc.Load(authConfigPath); err != nil {
+		return nil, iodine.New(err, nil)
+	}
+	return qc.Data().(*Config), nil
+}