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/*
* ============LICENSE_START=======================================================
* oom-certservice-k8s-external-provider
* ================================================================================
* Copyright (C) 2020-2021 Nokia. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package certserviceclient
import (
"encoding/base64"
"encoding/json"
"fmt"
"net/http"
"onap.org/oom-certservice/k8s-external-provider/src/model"
)
const (
CsrHeaderName = "CSR"
PkHeaderName = "PK"
OldPkHeaderName = "OLD_PK"
OldCertificateHeaderName = "OLD_CERT"
)
type CertServiceClient interface {
GetCertificates(csr []byte, key []byte) (*CertificatesResponse, error)
CheckHealth() error
UpdateCertificate(csr []byte, key []byte, signCertificateModel model.SignCertificateModel) (*CertificatesResponse, error)
}
type CertServiceClientImpl struct {
healthUrl string
certificationUrl string
updateUrl string
httpClient HTTPClient
}
type HTTPClient interface {
Do(req *http.Request) (*http.Response, error)
}
type CertificatesResponse struct {
CertificateChain []string `json:"certificateChain"`
TrustedCertificates []string `json:"trustedCertificates"`
}
type ResponseException struct {
ErrorMessage string `json:"errorMessage"`
}
func (client *CertServiceClientImpl) CheckHealth() error {
request, err := http.NewRequest("GET", client.healthUrl, nil)
if err != nil {
return err
}
response, err := client.httpClient.Do(request)
if err != nil {
return err
}
if response.StatusCode != http.StatusOK {
return fmt.Errorf("health check retured status code [%d]", response.StatusCode)
}
return nil
}
func (client *CertServiceClientImpl) GetCertificates(csr []byte, key []byte) (*CertificatesResponse, error) {
request, err := http.NewRequest("GET", client.certificationUrl, nil)
if err != nil {
return nil, err
}
request.Header.Add(CsrHeaderName, base64.StdEncoding.EncodeToString(csr))
request.Header.Add(PkHeaderName, base64.StdEncoding.EncodeToString(key))
return client.executeRequest(request)
}
func (client *CertServiceClientImpl) UpdateCertificate(csr []byte, key []byte, signCertificateModel model.SignCertificateModel) (*CertificatesResponse, error) {
request, err := http.NewRequest("GET", client.updateUrl, nil)
if err != nil {
return nil, err
}
request.Header.Add(CsrHeaderName, base64.StdEncoding.EncodeToString(csr))
request.Header.Add(PkHeaderName, base64.StdEncoding.EncodeToString(key))
request.Header.Add(OldPkHeaderName, signCertificateModel.OldPrivateKey)
request.Header.Add(OldCertificateHeaderName, signCertificateModel.OldCertificate)
return client.executeRequest(request)
}
func (client *CertServiceClientImpl) executeRequest(request *http.Request) (*CertificatesResponse, error) {
response, err := client.httpClient.Do(request)
if err != nil {
return nil, err
}
if response.StatusCode != http.StatusOK {
var responseException ResponseException
err = json.NewDecoder(response.Body).Decode(&responseException)
return nil, fmt.Errorf("CertService API returned status code [%d] and message [%s]",
response.StatusCode, responseException.ErrorMessage)
}
var certificatesResponse CertificatesResponse
err = json.NewDecoder(response.Body).Decode(&certificatesResponse)
if err != nil {
return nil, err
}
return &certificatesResponse, err
}
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