certificates/acme/db/nosql/authz.go

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package nosql
import (
"context"
"encoding/json"
"strings"
"time"
"github.com/pkg/errors"
"github.com/smallstep/nosql"
)
var defaultExpiryDuration = time.Hour * 24
// dbAuthz is the base authz type that others build from.
type dbAuthz struct {
ID string `json:"id"`
AccountID string `json:"accountID"`
Identifier Identifier `json:"identifier"`
Status string `json:"status"`
Expires time.Time `json:"expires"`
Challenges []string `json:"challenges"`
Wildcard bool `json:"wildcard"`
Created time.Time `json:"created"`
Error *Error `json:"error"`
}
func (ba *dbAuthz) clone() *dbAuthz {
u := *ba
return &u
}
func (db *DB) saveDBAuthz(ctx context.Context, nu *authz, old *dbAuthz) error {
var (
err error
oldB, newB []byte
)
if old == nil {
oldB = nil
} else {
if oldB, err = json.Marshal(old); err != nil {
return ServerInternalErr(errors.Wrap(err, "error marshaling old authz"))
}
}
if newB, err = json.Marshal(nu); err != nil {
return ServerInternalErr(errors.Wrap(err, "error marshaling new authz"))
}
_, swapped, err := db.CmpAndSwap(authzTable, []byte(ba.ID), oldB, newB)
switch {
case err != nil:
return ServerInternalErr(errors.Wrapf(err, "error storing authz"))
case !swapped:
return ServerInternalErr(errors.Errorf("error storing authz; " +
"value has changed since last read"))
default:
return nil
}
}
// getDBAuthz retrieves and unmarshals a database representation of the
// ACME Authorization type.
func (db *DB) getDBAuthz(ctx context.Context, id string) (*dbAuthz, error) {
data, err := db.db.Get(authzTable, []byte(id))
if nosql.IsErrNotFound(err) {
return nil, MalformedErr(errors.Wrapf(err, "authz %s not found", id))
} else if err != nil {
return nil, ServerInternalErr(errors.Wrapf(err, "error loading authz %s", id))
}
var dbaz dbAuthz
if err = json.Unmarshal(data, &dbaz); err != nil {
return nil, ServerInternalErr(errors.Wrap(err, "error unmarshaling authz type into dbAuthz"))
}
return &dbaz
}
// GetAuthorization retrieves and unmarshals an ACME authz type from the database.
// Implements acme.DB GetAuthorization interface.
func (db *DB) GetAuthorization(ctx context.Context, id string) (*types.Authorization, error) {
dbaz, err := getDBAuthz(id)
if err != nil {
return nil, err
}
var chs = make([]*Challenge, len(ba.Challenges))
for i, chID := range dbaz.Challenges {
chs[i], err = db.GetChallenge(ctx, chID)
if err != nil {
return nil, err
}
}
return &types.Authorization{
Identifier: dbaz.Identifier,
Status: dbaz.Status,
Challenges: chs,
Wildcard: dbaz.Wildcard,
Expires: dbaz.Expires.Format(time.RFC3339),
ID: dbaz.ID,
}, nil
}
// CreateAuthorization creates an entry in the database for the Authorization.
// Implements the acme.DB.CreateAuthorization interface.
func (db *DB) CreateAuthorization(ctx context.Context, az *types.Authorization) error {
if len(authz.AccountID) == 0 {
return ServerInternalErr(errors.New("AccountID cannot be empty"))
}
az.ID, err = randID()
if err != nil {
return nil, err
}
now := clock.Now()
dbaz := &dbAuthz{
ID: az.ID,
AccountID: az.AccountId,
Status: types.StatusPending,
Created: now,
Expires: now.Add(defaultExpiryDuration),
Identifier: az.Identifier,
}
if strings.HasPrefix(az.Identifier.Value, "*.") {
dbaz.Wildcard = true
dbaz.Identifier = Identifier{
Value: strings.TrimPrefix(identifier.Value, "*."),
Type: identifier.Type,
}
}
chIDs := []string{}
chTypes := []string{"dns-01"}
// HTTP and TLS challenges can only be used for identifiers without wildcards.
if !dbaz.Wildcard {
chTypes = append(chTypes, []string{"http-01", "tls-alpn-01"}...)
}
for _, typ := range chTypes {
ch, err := db.CreateChallenge(ctx, &types.Challenge{
AccountID: az.AccountID,
AuthzID: az.ID,
Value: az.Identifier.Value,
Type: typ,
})
if err != nil {
return nil, Wrapf(err, "error creating '%s' challenge", typ)
}
chIDs = append(chIDs, ch.ID)
}
dbaz.Challenges = chIDs
return db.saveDBAuthz(ctx, dbaz, nil)
}
// UpdateAuthorization saves an updated ACME Authorization to the database.
func (db *DB) UpdateAuthorization(ctx context.Context, az *types.Authorization) error {
old, err := db.getDBAuthz(ctx, az.ID)
if err != nil {
return err
}
nu := old.clone()
nu.Status = az.Status
nu.Error = az.Error
return db.saveDBAuthz(ctx, nu, old)
}
/*
// updateStatus attempts to update the status on a dbAuthz and stores the
// updating object if necessary.
func (ba *dbAuthz) updateStatus(db nosql.DB) (authz, error) {
newAuthz := ba.clone()
now := time.Now().UTC()
switch ba.Status {
case StatusInvalid:
return ba.parent(), nil
case StatusValid:
return ba.parent(), nil
case StatusPending:
// check expiry
if now.After(ba.Expires) {
newAuthz.Status = StatusInvalid
newAuthz.Error = MalformedErr(errors.New("authz has expired"))
break
}
var isValid = false
for _, chID := range ba.Challenges {
ch, err := getChallenge(db, chID)
if err != nil {
return ba, err
}
if ch.getStatus() == StatusValid {
isValid = true
break
}
}
if !isValid {
return ba.parent(), nil
}
newAuthz.Status = StatusValid
newAuthz.Error = nil
default:
return nil, ServerInternalErr(errors.Errorf("unrecognized authz status: %s", ba.Status))
}
if err := newAuthz.save(db, ba); err != nil {
return ba, err
}
return newAuthz.parent(), nil
}
*/