/
disk.go
130 lines (102 loc) · 3.1 KB
/
disk.go
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//go:build !windows
package main
import (
"context"
"encoding/json"
"os"
"strings"
"sync"
"github.com/hashicorp/hcl"
"github.com/spiffe/spire-plugin-sdk/pluginmain"
svidstorev1 "github.com/spiffe/spire-plugin-sdk/proto/spire/plugin/agent/svidstore/v1"
configv1 "github.com/spiffe/spire-plugin-sdk/proto/spire/service/common/config/v1"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
type Config struct {
SVIDsPath string `hcl:"svids_path"`
}
type Plugin struct {
svidstorev1.UnimplementedSVIDStoreServer
configv1.UnimplementedConfigServer
config *Config
mtx sync.RWMutex
svids map[string]*svidstorev1.X509SVID
}
func (p *Plugin) DeleteX509SVID(_ context.Context, req *svidstorev1.DeleteX509SVIDRequest) (*svidstorev1.DeleteX509SVIDResponse, error) {
secretName, err := getSecretName(req.Metadata)
if err != nil {
return nil, err
}
err = p.deleteSVID(secretName)
if err != nil {
return nil, err
}
return &svidstorev1.DeleteX509SVIDResponse{}, nil
}
func (p *Plugin) PutX509SVID(_ context.Context, req *svidstorev1.PutX509SVIDRequest) (*svidstorev1.PutX509SVIDResponse, error) {
secretName, err := getSecretName(req.Metadata)
if err != nil {
return nil, err
}
err = p.putSVID(secretName, req.Svid)
if err != nil {
return nil, err
}
return &svidstorev1.PutX509SVIDResponse{}, nil
}
func (p *Plugin) Configure(_ context.Context, req *configv1.ConfigureRequest) (*configv1.ConfigureResponse, error) {
p.svids = make(map[string]*svidstorev1.X509SVID)
config := new(Config)
if err := hcl.Decode(config, req.HclConfiguration); err != nil {
return nil, status.Errorf(codes.InvalidArgument, "failed to decode configuration: %v", err)
}
err := os.WriteFile(config.SVIDsPath, []byte("{}"), 0644) //nolint // file used for testing
if err != nil {
return nil, status.Errorf(codes.Internal, "failed to write to file: %v", err)
}
p.config = config
return &configv1.ConfigureResponse{}, nil
}
func (p *Plugin) putSVID(secretName string, svid *svidstorev1.X509SVID) error {
op := func(svids map[string]*svidstorev1.X509SVID) {
svids[secretName] = svid
}
return p.updateFile(op)
}
func (p *Plugin) deleteSVID(secretName string) error {
op := func(svids map[string]*svidstorev1.X509SVID) {
delete(svids, secretName)
}
return p.updateFile(op)
}
func (p *Plugin) updateFile(op func(map[string]*svidstorev1.X509SVID)) error {
p.mtx.Lock()
defer p.mtx.Unlock()
op(p.svids)
data, err := json.Marshal(p.svids)
if err != nil {
return status.Errorf(codes.Internal, "failed to marshal json: %s", err.Error())
}
err = os.WriteFile(p.config.SVIDsPath, data, 0600)
if err != nil {
return status.Errorf(codes.Internal, "failed to write to file: %s", err.Error())
}
return nil
}
func getSecretName(metadata []string) (string, error) {
for _, data := range metadata {
list := strings.Split(data, "name:")
if len(list) > 1 {
return list[1], nil
}
}
return "", status.Error(codes.InvalidArgument, "missing name in metadata")
}
func main() {
plugin := new(Plugin)
pluginmain.Serve(
svidstorev1.SVIDStorePluginServer(plugin),
configv1.ConfigServiceServer(plugin),
)
}