constellation/internal/attestation/azure/snp/imds.go

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/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package snp
import (
"context"
"encoding/json"
"net/http"
)
// Modified version of bootstrapper/cloudprovider/azure/imds.go
const (
imdsVcekURL = "http://169.254.169.254/metadata/THIM/amd/certification"
)
type imdsClient struct {
client *http.Client
}
// Retrieve retrieves instance metadata from the azure imds API.
func (c imdsClient) getVcek(ctx context.Context) (vcekResponse, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, imdsVcekURL, http.NoBody)
if err != nil {
return vcekResponse{}, err
}
req.Header.Add("Metadata", "True")
resp, err := c.client.Do(req)
if err != nil {
return vcekResponse{}, err
}
defer resp.Body.Close()
var res vcekResponse
if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
return vcekResponse{}, err
}
return res, nil
}
type vcekResponse struct {
VcekCert string
CertificateChain string
}