sp98
4efe3982b0
Add support for store OSD encryption Keys in Azure KMS Signed-off-by: sp98 <sapillai@redhat.com>
103 lines
3.4 KiB
Go
103 lines
3.4 KiB
Go
/*
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Copyright 2024 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kms
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import (
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"context"
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"fmt"
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"os"
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"github.com/libopenstorage/secrets"
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"github.com/libopenstorage/secrets/azure"
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"github.com/pkg/errors"
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"github.com/rook/rook/pkg/clusterd"
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v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const (
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//#nosec G101 -- This is only the k8s secret name
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azureClientCertSecretName = "AZURE_CERT_SECRET_NAME"
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)
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var kmsAzureManadatoryConnectionDetails = []string{azure.AzureVaultURL, azure.AzureTenantID, azure.AzureClientID, azureClientCertSecretName}
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// IsAzure determines whether the configured KMS is Azure Key Vault
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func (c *Config) IsAzure() bool {
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return c.Provider == secrets.TypeAzure
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}
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// InitAzure initializes azure key vault client
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func InitAzure(ctx context.Context, context *clusterd.Context, namespace string, config map[string]string) (secrets.Secrets, error) {
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azureKVConfig, removecertFiles, err := azureKVCert(ctx, context, namespace, config)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to setup azure client cert authentication")
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}
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defer removecertFiles()
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// Convert map string to map interface
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secretConfig := make(map[string]interface{})
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for key, value := range azureKVConfig {
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secretConfig[key] = string(value)
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}
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secrets, err := azure.New(secretConfig)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to initialize azure client")
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}
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return secrets, nil
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}
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// azureKVCert retrivies azure client cert from the secret and stores that in a file
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func azureKVCert(ctx context.Context, context *clusterd.Context, namespace string, config map[string]string) (newConfig map[string]string, removeCertFiles removeCertFilesFunction, retErr error) {
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var filesToRemove []*os.File
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defer func() {
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removeCertFiles = getRemoveCertFiles(filesToRemove)
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if retErr != nil {
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removeCertFiles()
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removeCertFiles = nil
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}
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}()
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clientCertSecretName := config[azureClientCertSecretName]
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if clientCertSecretName == "" {
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return nil, removeCertFiles, fmt.Errorf("azure cert secret name is not provided in the connection details")
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}
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secret, err := context.Clientset.CoreV1().Secrets(namespace).Get(ctx, clientCertSecretName, v1.GetOptions{})
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if err != nil {
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return nil, removeCertFiles, errors.Wrapf(err, "failed to fetch tls k8s secret %q", clientCertSecretName)
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}
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// Generate a temp file
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file, err := createTmpFile("", "cert.pem")
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if err != nil {
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return nil, removeCertFiles, errors.Wrapf(err, "failed to generate temp file for k8s secret %q content", clientCertSecretName)
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}
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err = os.WriteFile(file.Name(), secret.Data["CLIENT_CERT"], 0400)
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if err != nil {
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return nil, removeCertFiles, errors.Wrapf(err, "failed to write k8s secret %q content to a file", clientCertSecretName)
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}
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// Update the env var with the path
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config[azure.AzureClientCertPath] = file.Name()
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filesToRemove = append(filesToRemove, file)
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return config, removeCertFiles, nil
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}
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