dex/storage/etcd/etcd.go

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package etcd
import (
"context"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/coreos/etcd/clientv3"
"github.com/sirupsen/logrus"
"github.com/dexidp/dex/storage"
)
const (
clientPrefix = "client/"
authCodePrefix = "auth_code/"
refreshTokenPrefix = "refresh_token/"
authRequestPrefix = "auth_req/"
passwordPrefix = "password/"
offlineSessionPrefix = "offline_session/"
connectorPrefix = "connector/"
keysName = "openid-connect-keys"
// defaultStorageTimeout will be applied to all storage's operations.
defaultStorageTimeout = 5 * time.Second
)
type conn struct {
db *clientv3.Client
logger logrus.FieldLogger
}
func (c *conn) Close() error {
return c.db.Close()
}
func (c *conn) GarbageCollect(now time.Time) (result storage.GCResult, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
authRequests, err := c.listAuthRequests(ctx)
if err != nil {
return result, err
}
var delErr error
for _, authRequest := range authRequests {
if now.After(authRequest.Expiry) {
if err := c.deleteKey(ctx, keyID(authRequestPrefix, authRequest.ID)); err != nil {
c.logger.Errorf("failed to delete auth request: %v", err)
delErr = fmt.Errorf("failed to delete auth request: %v", err)
}
result.AuthRequests++
}
}
if delErr != nil {
return result, delErr
}
authCodes, err := c.listAuthCodes(ctx)
if err != nil {
return result, err
}
for _, authCode := range authCodes {
if now.After(authCode.Expiry) {
if err := c.deleteKey(ctx, keyID(authCodePrefix, authCode.ID)); err != nil {
c.logger.Errorf("failed to delete auth code %v", err)
delErr = fmt.Errorf("failed to delete auth code: %v", err)
}
result.AuthCodes++
}
}
return result, delErr
}
func (c *conn) CreateAuthRequest(a storage.AuthRequest) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, keyID(authRequestPrefix, a.ID), fromStorageAuthRequest(a))
}
func (c *conn) GetAuthRequest(id string) (a storage.AuthRequest, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
var req AuthRequest
if err = c.getKey(ctx, keyID(authRequestPrefix, id), &req); err != nil {
return
}
return toStorageAuthRequest(req), nil
}
func (c *conn) UpdateAuthRequest(id string, updater func(a storage.AuthRequest) (storage.AuthRequest, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keyID(authRequestPrefix, id), func(currentValue []byte) ([]byte, error) {
var current AuthRequest
if len(currentValue) > 0 {
if err := json.Unmarshal(currentValue, &current); err != nil {
return nil, err
}
}
updated, err := updater(toStorageAuthRequest(current))
if err != nil {
return nil, err
}
return json.Marshal(fromStorageAuthRequest(updated))
})
}
func (c *conn) DeleteAuthRequest(id string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keyID(authRequestPrefix, id))
}
func (c *conn) CreateAuthCode(a storage.AuthCode) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, keyID(authCodePrefix, a.ID), fromStorageAuthCode(a))
}
func (c *conn) GetAuthCode(id string) (a storage.AuthCode, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
err = c.getKey(ctx, keyID(authCodePrefix, id), &a)
return a, err
}
func (c *conn) DeleteAuthCode(id string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keyID(authCodePrefix, id))
}
func (c *conn) CreateRefresh(r storage.RefreshToken) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, keyID(refreshTokenPrefix, r.ID), fromStorageRefreshToken(r))
}
func (c *conn) GetRefresh(id string) (r storage.RefreshToken, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
var token RefreshToken
if err = c.getKey(ctx, keyID(refreshTokenPrefix, id), &token); err != nil {
return
}
return toStorageRefreshToken(token), nil
}
func (c *conn) UpdateRefreshToken(id string, updater func(old storage.RefreshToken) (storage.RefreshToken, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keyID(refreshTokenPrefix, id), func(currentValue []byte) ([]byte, error) {
var current RefreshToken
if len(currentValue) > 0 {
if err := json.Unmarshal([]byte(currentValue), &current); err != nil {
return nil, err
}
}
updated, err := updater(toStorageRefreshToken(current))
if err != nil {
return nil, err
}
return json.Marshal(fromStorageRefreshToken(updated))
})
}
func (c *conn) DeleteRefresh(id string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keyID(refreshTokenPrefix, id))
}
func (c *conn) ListRefreshTokens() (tokens []storage.RefreshToken, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
res, err := c.db.Get(ctx, refreshTokenPrefix, clientv3.WithPrefix())
if err != nil {
return tokens, err
}
for _, v := range res.Kvs {
var token RefreshToken
if err = json.Unmarshal(v.Value, &token); err != nil {
return tokens, err
}
tokens = append(tokens, toStorageRefreshToken(token))
}
return tokens, nil
}
func (c *conn) CreateClient(cli storage.Client) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, keyID(clientPrefix, cli.ID), cli)
}
func (c *conn) GetClient(id string) (cli storage.Client, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
err = c.getKey(ctx, keyID(clientPrefix, id), &cli)
return cli, err
}
func (c *conn) UpdateClient(id string, updater func(old storage.Client) (storage.Client, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keyID(clientPrefix, id), func(currentValue []byte) ([]byte, error) {
var current storage.Client
if len(currentValue) > 0 {
if err := json.Unmarshal(currentValue, &current); err != nil {
return nil, err
}
}
updated, err := updater(current)
if err != nil {
return nil, err
}
return json.Marshal(updated)
})
}
func (c *conn) DeleteClient(id string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keyID(clientPrefix, id))
}
func (c *conn) ListClients() (clients []storage.Client, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
res, err := c.db.Get(ctx, clientPrefix, clientv3.WithPrefix())
if err != nil {
return clients, err
}
for _, v := range res.Kvs {
var cli storage.Client
if err = json.Unmarshal(v.Value, &cli); err != nil {
return clients, err
}
clients = append(clients, cli)
}
return clients, nil
}
func (c *conn) CreatePassword(p storage.Password) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, passwordPrefix+strings.ToLower(p.Email), p)
}
func (c *conn) GetPassword(email string) (p storage.Password, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
err = c.getKey(ctx, keyEmail(passwordPrefix, email), &p)
return p, err
}
func (c *conn) UpdatePassword(email string, updater func(p storage.Password) (storage.Password, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keyEmail(passwordPrefix, email), func(currentValue []byte) ([]byte, error) {
var current storage.Password
if len(currentValue) > 0 {
if err := json.Unmarshal(currentValue, &current); err != nil {
return nil, err
}
}
updated, err := updater(current)
if err != nil {
return nil, err
}
return json.Marshal(updated)
})
}
func (c *conn) DeletePassword(email string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keyEmail(passwordPrefix, email))
}
func (c *conn) ListPasswords() (passwords []storage.Password, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
res, err := c.db.Get(ctx, passwordPrefix, clientv3.WithPrefix())
if err != nil {
return passwords, err
}
for _, v := range res.Kvs {
var p storage.Password
if err = json.Unmarshal(v.Value, &p); err != nil {
return passwords, err
}
passwords = append(passwords, p)
}
return passwords, nil
}
func (c *conn) CreateOfflineSessions(s storage.OfflineSessions) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, keySession(offlineSessionPrefix, s.UserID, s.ConnID), fromStorageOfflineSessions(s))
}
func (c *conn) UpdateOfflineSessions(userID string, connID string, updater func(s storage.OfflineSessions) (storage.OfflineSessions, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keySession(offlineSessionPrefix, userID, connID), func(currentValue []byte) ([]byte, error) {
var current OfflineSessions
if len(currentValue) > 0 {
if err := json.Unmarshal(currentValue, &current); err != nil {
return nil, err
}
}
updated, err := updater(toStorageOfflineSessions(current))
if err != nil {
return nil, err
}
return json.Marshal(fromStorageOfflineSessions(updated))
})
}
func (c *conn) GetOfflineSessions(userID string, connID string) (s storage.OfflineSessions, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
var os OfflineSessions
if err = c.getKey(ctx, keySession(offlineSessionPrefix, userID, connID), &os); err != nil {
return
}
return toStorageOfflineSessions(os), nil
}
func (c *conn) DeleteOfflineSessions(userID string, connID string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keySession(offlineSessionPrefix, userID, connID))
}
func (c *conn) CreateConnector(connector storage.Connector) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnCreate(ctx, keyID(connectorPrefix, connector.ID), connector)
}
func (c *conn) GetConnector(id string) (conn storage.Connector, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
err = c.getKey(ctx, keyID(connectorPrefix, id), &conn)
return conn, err
}
func (c *conn) UpdateConnector(id string, updater func(s storage.Connector) (storage.Connector, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keyID(connectorPrefix, id), func(currentValue []byte) ([]byte, error) {
var current storage.Connector
if len(currentValue) > 0 {
if err := json.Unmarshal(currentValue, &current); err != nil {
return nil, err
}
}
updated, err := updater(current)
if err != nil {
return nil, err
}
return json.Marshal(updated)
})
}
func (c *conn) DeleteConnector(id string) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.deleteKey(ctx, keyID(connectorPrefix, id))
}
func (c *conn) ListConnectors() (connectors []storage.Connector, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
res, err := c.db.Get(ctx, connectorPrefix, clientv3.WithPrefix())
if err != nil {
return nil, err
}
for _, v := range res.Kvs {
var c storage.Connector
if err = json.Unmarshal(v.Value, &c); err != nil {
return nil, err
}
connectors = append(connectors, c)
}
return connectors, nil
}
func (c *conn) GetKeys() (keys storage.Keys, err error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
res, err := c.db.Get(ctx, keysName)
if err != nil {
return keys, err
}
if res.Count > 0 && len(res.Kvs) > 0 {
err = json.Unmarshal(res.Kvs[0].Value, &keys)
}
return keys, err
}
func (c *conn) UpdateKeys(updater func(old storage.Keys) (storage.Keys, error)) error {
ctx, cancel := context.WithTimeout(context.Background(), defaultStorageTimeout)
defer cancel()
return c.txnUpdate(ctx, keysName, func(currentValue []byte) ([]byte, error) {
var current storage.Keys
if len(currentValue) > 0 {
if err := json.Unmarshal(currentValue, &current); err != nil {
return nil, err
}
}
updated, err := updater(current)
if err != nil {
return nil, err
}
return json.Marshal(updated)
})
}
func (c *conn) deleteKey(ctx context.Context, key string) error {
res, err := c.db.Delete(ctx, key)
if err != nil {
return err
}
if res.Deleted == 0 {
return storage.ErrNotFound
}
return nil
}
func (c *conn) getKey(ctx context.Context, key string, value interface{}) error {
r, err := c.db.Get(ctx, key)
if err != nil {
return err
}
if r.Count == 0 {
return storage.ErrNotFound
}
return json.Unmarshal(r.Kvs[0].Value, value)
}
func (c *conn) listAuthRequests(ctx context.Context) (reqs []AuthRequest, err error) {
res, err := c.db.Get(ctx, authRequestPrefix, clientv3.WithPrefix())
if err != nil {
return reqs, err
}
for _, v := range res.Kvs {
var r AuthRequest
if err = json.Unmarshal(v.Value, &r); err != nil {
return reqs, err
}
reqs = append(reqs, r)
}
return reqs, nil
}
func (c *conn) listAuthCodes(ctx context.Context) (codes []AuthCode, err error) {
res, err := c.db.Get(ctx, authCodePrefix, clientv3.WithPrefix())
if err != nil {
return codes, err
}
for _, v := range res.Kvs {
var c AuthCode
if err = json.Unmarshal(v.Value, &c); err != nil {
return codes, err
}
codes = append(codes, c)
}
return codes, nil
}
func (c *conn) txnCreate(ctx context.Context, key string, value interface{}) error {
b, err := json.Marshal(value)
if err != nil {
return err
}
txn := c.db.Txn(ctx)
res, err := txn.
If(clientv3.Compare(clientv3.CreateRevision(key), "=", 0)).
Then(clientv3.OpPut(key, string(b))).
Commit()
if err != nil {
return err
}
if !res.Succeeded {
return storage.ErrAlreadyExists
}
return nil
}
func (c *conn) txnUpdate(ctx context.Context, key string, update func(current []byte) ([]byte, error)) error {
getResp, err := c.db.Get(ctx, key)
if err != nil {
return err
}
var currentValue []byte
var modRev int64
if len(getResp.Kvs) > 0 {
currentValue = getResp.Kvs[0].Value
modRev = getResp.Kvs[0].ModRevision
}
updatedValue, err := update(currentValue)
if err != nil {
return err
}
txn := c.db.Txn(ctx)
updateResp, err := txn.
If(clientv3.Compare(clientv3.ModRevision(key), "=", modRev)).
Then(clientv3.OpPut(key, string(updatedValue))).
Commit()
if err != nil {
return err
}
if !updateResp.Succeeded {
return fmt.Errorf("failed to update key=%q: concurrent conflicting update happened", key)
}
return nil
}
func keyID(prefix, id string) string { return prefix + id }
func keyEmail(prefix, email string) string { return prefix + strings.ToLower(email) }
func keySession(prefix, userID, connID string) string {
return prefix + strings.ToLower(userID+"|"+connID)
}