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provisioner.go
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provisioner.go
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package nosql
import (
"context"
"encoding/json"
"time"
"github.com/pkg/errors"
"github.com/smallstep/certificates/authority/admin"
"github.com/smallstep/nosql"
"go.step.sm/linkedca"
"google.golang.org/protobuf/types/known/timestamppb"
)
// dbProvisioner is the database representation of a Provisioner type.
type dbProvisioner struct {
ID string `json:"id"`
AuthorityID string `json:"authorityID"`
Type linkedca.Provisioner_Type `json:"type"`
Name string `json:"name"`
Claims *linkedca.Claims `json:"claims"`
Details []byte `json:"details"`
X509Template *linkedca.Template `json:"x509Template"`
SSHTemplate *linkedca.Template `json:"sshTemplate"`
CreatedAt time.Time `json:"createdAt"`
DeletedAt time.Time `json:"deletedAt"`
}
func (dbp *dbProvisioner) clone() *dbProvisioner {
u := *dbp
return &u
}
func (dbp *dbProvisioner) convert2linkedca() (*linkedca.Provisioner, error) {
details, err := admin.UnmarshalProvisionerDetails(dbp.Type, dbp.Details)
if err != nil {
return nil, err
}
return &linkedca.Provisioner{
Id: dbp.ID,
AuthorityId: dbp.AuthorityID,
Type: dbp.Type,
Name: dbp.Name,
Claims: dbp.Claims,
Details: details,
X509Template: dbp.X509Template,
SshTemplate: dbp.SSHTemplate,
CreatedAt: timestamppb.New(dbp.CreatedAt),
DeletedAt: timestamppb.New(dbp.DeletedAt),
}, nil
}
func (db *DB) getDBProvisionerBytes(ctx context.Context, id string) ([]byte, error) {
data, err := db.db.Get(provisionersTable, []byte(id))
if nosql.IsErrNotFound(err) {
return nil, admin.NewError(admin.ErrorNotFoundType, "provisioner %s not found", id)
} else if err != nil {
return nil, errors.Wrapf(err, "error loading provisioner %s", id)
}
return data, nil
}
func (db *DB) unmarshalDBProvisioner(data []byte, id string) (*dbProvisioner, error) {
var dbp = new(dbProvisioner)
if err := json.Unmarshal(data, dbp); err != nil {
return nil, errors.Wrapf(err, "error unmarshaling provisioner %s into dbProvisioner", id)
}
if !dbp.DeletedAt.IsZero() {
return nil, admin.NewError(admin.ErrorDeletedType, "provisioner %s is deleted", id)
}
if dbp.AuthorityID != db.authorityID {
return nil, admin.NewError(admin.ErrorAuthorityMismatchType,
"provisioner %s is not owned by authority %s", id, db.authorityID)
}
return dbp, nil
}
func (db *DB) getDBProvisioner(ctx context.Context, id string) (*dbProvisioner, error) {
data, err := db.getDBProvisionerBytes(ctx, id)
if err != nil {
return nil, err
}
dbp, err := db.unmarshalDBProvisioner(data, id)
if err != nil {
return nil, err
}
return dbp, nil
}
func (db *DB) unmarshalProvisioner(data []byte, id string) (*linkedca.Provisioner, error) {
dbp, err := db.unmarshalDBProvisioner(data, id)
if err != nil {
return nil, err
}
return dbp.convert2linkedca()
}
// GetProvisioner retrieves and unmarshals a provisioner from the database.
func (db *DB) GetProvisioner(ctx context.Context, id string) (*linkedca.Provisioner, error) {
data, err := db.getDBProvisionerBytes(ctx, id)
if err != nil {
return nil, err
}
prov, err := db.unmarshalProvisioner(data, id)
if err != nil {
return nil, err
}
return prov, nil
}
// GetProvisioners retrieves and unmarshals all active (not deleted) provisioners
// from the database.
func (db *DB) GetProvisioners(ctx context.Context) ([]*linkedca.Provisioner, error) {
dbEntries, err := db.db.List(provisionersTable)
if err != nil {
return nil, errors.Wrap(err, "error loading provisioners")
}
var provs []*linkedca.Provisioner
for _, entry := range dbEntries {
prov, err := db.unmarshalProvisioner(entry.Value, string(entry.Key))
if err != nil {
switch k := err.(type) {
case *admin.Error:
if k.IsType(admin.ErrorDeletedType) || k.IsType(admin.ErrorAuthorityMismatchType) {
continue
} else {
return nil, err
}
default:
return nil, err
}
}
if prov.AuthorityId != db.authorityID {
continue
}
provs = append(provs, prov)
}
return provs, nil
}
// CreateProvisioner stores a new provisioner to the database.
func (db *DB) CreateProvisioner(ctx context.Context, prov *linkedca.Provisioner) error {
var err error
prov.Id, err = randID()
if err != nil {
return admin.WrapErrorISE(err, "error generating random id for provisioner")
}
details, err := json.Marshal(prov.Details.GetData())
if err != nil {
return admin.WrapErrorISE(err, "error marshaling details when creating provisioner %s", prov.Name)
}
dbp := &dbProvisioner{
ID: prov.Id,
AuthorityID: db.authorityID,
Type: prov.Type,
Name: prov.Name,
Claims: prov.Claims,
Details: details,
X509Template: prov.X509Template,
SSHTemplate: prov.SshTemplate,
CreatedAt: clock.Now(),
}
if err := db.save(ctx, prov.Id, dbp, nil, "provisioner", provisionersTable); err != nil {
return admin.WrapErrorISE(err, "error creating provisioner %s", prov.Name)
}
return nil
}
// UpdateProvisioner saves an updated provisioner to the database.
func (db *DB) UpdateProvisioner(ctx context.Context, prov *linkedca.Provisioner) error {
old, err := db.getDBProvisioner(ctx, prov.Id)
if err != nil {
return err
}
nu := old.clone()
if old.Type != prov.Type {
return admin.NewError(admin.ErrorBadRequestType, "cannot update provisioner type")
}
nu.Name = prov.Name
nu.Claims = prov.Claims
nu.Details, err = json.Marshal(prov.Details.GetData())
if err != nil {
return admin.WrapErrorISE(err, "error marshaling details when updating provisioner %s", prov.Name)
}
nu.X509Template = prov.X509Template
nu.SSHTemplate = prov.SshTemplate
return db.save(ctx, prov.Id, nu, old, "provisioner", provisionersTable)
}
// DeleteProvisioner saves an updated admin to the database.
func (db *DB) DeleteProvisioner(ctx context.Context, id string) error {
old, err := db.getDBProvisioner(ctx, id)
if err != nil {
return err
}
nu := old.clone()
nu.DeletedAt = clock.Now()
return db.save(ctx, old.ID, nu, old, "provisioner", provisionersTable)
}