khenaidoo | 2672188 | 2021-08-11 17:42:52 -0400 | [diff] [blame] | 1 | // Copyright 2016 The etcd Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package auth |
| 16 | |
| 17 | import ( |
| 18 | "bytes" |
| 19 | "context" |
| 20 | "encoding/binary" |
| 21 | "errors" |
| 22 | "sort" |
| 23 | "strings" |
| 24 | "sync" |
| 25 | "sync/atomic" |
| 26 | "time" |
| 27 | |
| 28 | "github.com/coreos/etcd/auth/authpb" |
| 29 | pb "github.com/coreos/etcd/etcdserver/etcdserverpb" |
| 30 | "github.com/coreos/etcd/mvcc/backend" |
| 31 | |
| 32 | "github.com/coreos/pkg/capnslog" |
| 33 | "golang.org/x/crypto/bcrypt" |
| 34 | "google.golang.org/grpc/credentials" |
| 35 | "google.golang.org/grpc/metadata" |
| 36 | "google.golang.org/grpc/peer" |
| 37 | ) |
| 38 | |
| 39 | var ( |
| 40 | enableFlagKey = []byte("authEnabled") |
| 41 | authEnabled = []byte{1} |
| 42 | authDisabled = []byte{0} |
| 43 | |
| 44 | revisionKey = []byte("authRevision") |
| 45 | |
| 46 | authBucketName = []byte("auth") |
| 47 | authUsersBucketName = []byte("authUsers") |
| 48 | authRolesBucketName = []byte("authRoles") |
| 49 | |
| 50 | plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "auth") |
| 51 | |
| 52 | ErrRootUserNotExist = errors.New("auth: root user does not exist") |
| 53 | ErrRootRoleNotExist = errors.New("auth: root user does not have root role") |
| 54 | ErrUserAlreadyExist = errors.New("auth: user already exists") |
| 55 | ErrUserEmpty = errors.New("auth: user name is empty") |
| 56 | ErrUserNotFound = errors.New("auth: user not found") |
| 57 | ErrRoleAlreadyExist = errors.New("auth: role already exists") |
| 58 | ErrRoleNotFound = errors.New("auth: role not found") |
| 59 | ErrAuthFailed = errors.New("auth: authentication failed, invalid user ID or password") |
| 60 | ErrPermissionDenied = errors.New("auth: permission denied") |
| 61 | ErrRoleNotGranted = errors.New("auth: role is not granted to the user") |
| 62 | ErrPermissionNotGranted = errors.New("auth: permission is not granted to the role") |
| 63 | ErrAuthNotEnabled = errors.New("auth: authentication is not enabled") |
| 64 | ErrAuthOldRevision = errors.New("auth: revision in header is old") |
| 65 | ErrInvalidAuthToken = errors.New("auth: invalid auth token") |
| 66 | ErrInvalidAuthOpts = errors.New("auth: invalid auth options") |
| 67 | ErrInvalidAuthMgmt = errors.New("auth: invalid auth management") |
| 68 | |
| 69 | // BcryptCost is the algorithm cost / strength for hashing auth passwords |
| 70 | BcryptCost = bcrypt.DefaultCost |
| 71 | ) |
| 72 | |
| 73 | const ( |
| 74 | rootUser = "root" |
| 75 | rootRole = "root" |
| 76 | |
| 77 | tokenTypeSimple = "simple" |
| 78 | tokenTypeJWT = "jwt" |
| 79 | |
| 80 | revBytesLen = 8 |
| 81 | ) |
| 82 | |
| 83 | type AuthInfo struct { |
| 84 | Username string |
| 85 | Revision uint64 |
| 86 | } |
| 87 | |
| 88 | // AuthenticateParamIndex is used for a key of context in the parameters of Authenticate() |
| 89 | type AuthenticateParamIndex struct{} |
| 90 | |
| 91 | // AuthenticateParamSimpleTokenPrefix is used for a key of context in the parameters of Authenticate() |
| 92 | type AuthenticateParamSimpleTokenPrefix struct{} |
| 93 | |
| 94 | // saveConsistentIndexFunc is used to sync consistentIndex to backend, now reusing store.saveIndex |
| 95 | type saveConsistentIndexFunc func(tx backend.BatchTx) |
| 96 | |
| 97 | // AuthStore defines auth storage interface. |
| 98 | type AuthStore interface { |
| 99 | // AuthEnable turns on the authentication feature |
| 100 | AuthEnable() error |
| 101 | |
| 102 | // AuthDisable turns off the authentication feature |
| 103 | AuthDisable() |
| 104 | |
| 105 | // Authenticate does authentication based on given user name and password |
| 106 | Authenticate(ctx context.Context, username, password string) (*pb.AuthenticateResponse, error) |
| 107 | |
| 108 | // Recover recovers the state of auth store from the given backend |
| 109 | Recover(b backend.Backend) |
| 110 | |
| 111 | // UserAdd adds a new user |
| 112 | UserAdd(r *pb.AuthUserAddRequest) (*pb.AuthUserAddResponse, error) |
| 113 | |
| 114 | // UserDelete deletes a user |
| 115 | UserDelete(r *pb.AuthUserDeleteRequest) (*pb.AuthUserDeleteResponse, error) |
| 116 | |
| 117 | // UserChangePassword changes a password of a user |
| 118 | UserChangePassword(r *pb.AuthUserChangePasswordRequest) (*pb.AuthUserChangePasswordResponse, error) |
| 119 | |
| 120 | // UserGrantRole grants a role to the user |
| 121 | UserGrantRole(r *pb.AuthUserGrantRoleRequest) (*pb.AuthUserGrantRoleResponse, error) |
| 122 | |
| 123 | // UserGet gets the detailed information of a users |
| 124 | UserGet(r *pb.AuthUserGetRequest) (*pb.AuthUserGetResponse, error) |
| 125 | |
| 126 | // UserRevokeRole revokes a role of a user |
| 127 | UserRevokeRole(r *pb.AuthUserRevokeRoleRequest) (*pb.AuthUserRevokeRoleResponse, error) |
| 128 | |
| 129 | // RoleAdd adds a new role |
| 130 | RoleAdd(r *pb.AuthRoleAddRequest) (*pb.AuthRoleAddResponse, error) |
| 131 | |
| 132 | // RoleGrantPermission grants a permission to a role |
| 133 | RoleGrantPermission(r *pb.AuthRoleGrantPermissionRequest) (*pb.AuthRoleGrantPermissionResponse, error) |
| 134 | |
| 135 | // RoleGet gets the detailed information of a role |
| 136 | RoleGet(r *pb.AuthRoleGetRequest) (*pb.AuthRoleGetResponse, error) |
| 137 | |
| 138 | // RoleRevokePermission gets the detailed information of a role |
| 139 | RoleRevokePermission(r *pb.AuthRoleRevokePermissionRequest) (*pb.AuthRoleRevokePermissionResponse, error) |
| 140 | |
| 141 | // RoleDelete gets the detailed information of a role |
| 142 | RoleDelete(r *pb.AuthRoleDeleteRequest) (*pb.AuthRoleDeleteResponse, error) |
| 143 | |
| 144 | // UserList gets a list of all users |
| 145 | UserList(r *pb.AuthUserListRequest) (*pb.AuthUserListResponse, error) |
| 146 | |
| 147 | // RoleList gets a list of all roles |
| 148 | RoleList(r *pb.AuthRoleListRequest) (*pb.AuthRoleListResponse, error) |
| 149 | |
| 150 | // IsPutPermitted checks put permission of the user |
| 151 | IsPutPermitted(authInfo *AuthInfo, key []byte) error |
| 152 | |
| 153 | // IsRangePermitted checks range permission of the user |
| 154 | IsRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error |
| 155 | |
| 156 | // IsDeleteRangePermitted checks delete-range permission of the user |
| 157 | IsDeleteRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error |
| 158 | |
| 159 | // IsAdminPermitted checks admin permission of the user |
| 160 | IsAdminPermitted(authInfo *AuthInfo) error |
| 161 | |
| 162 | // GenTokenPrefix produces a random string in a case of simple token |
| 163 | // in a case of JWT, it produces an empty string |
| 164 | GenTokenPrefix() (string, error) |
| 165 | |
| 166 | // Revision gets current revision of authStore |
| 167 | Revision() uint64 |
| 168 | |
| 169 | // CheckPassword checks a given pair of username and password is correct |
| 170 | CheckPassword(username, password string) (uint64, error) |
| 171 | |
| 172 | // Close does cleanup of AuthStore |
| 173 | Close() error |
| 174 | |
| 175 | // AuthInfoFromCtx gets AuthInfo from gRPC's context |
| 176 | AuthInfoFromCtx(ctx context.Context) (*AuthInfo, error) |
| 177 | |
| 178 | // AuthInfoFromTLS gets AuthInfo from TLS info of gRPC's context |
| 179 | AuthInfoFromTLS(ctx context.Context) *AuthInfo |
| 180 | |
| 181 | // WithRoot generates and installs a token that can be used as a root credential |
| 182 | WithRoot(ctx context.Context) context.Context |
| 183 | |
| 184 | // HasRole checks that user has role |
| 185 | HasRole(user, role string) bool |
| 186 | |
| 187 | // SetConsistentIndexSyncer sets consistentIndex syncer |
| 188 | SetConsistentIndexSyncer(syncer saveConsistentIndexFunc) |
| 189 | } |
| 190 | |
| 191 | type TokenProvider interface { |
| 192 | info(ctx context.Context, token string, revision uint64) (*AuthInfo, bool) |
| 193 | assign(ctx context.Context, username string, revision uint64) (string, error) |
| 194 | enable() |
| 195 | disable() |
| 196 | |
| 197 | invalidateUser(string) |
| 198 | genTokenPrefix() (string, error) |
| 199 | } |
| 200 | |
| 201 | type authStore struct { |
| 202 | // atomic operations; need 64-bit align, or 32-bit tests will crash |
| 203 | revision uint64 |
| 204 | |
| 205 | be backend.Backend |
| 206 | enabled bool |
| 207 | enabledMu sync.RWMutex |
| 208 | |
| 209 | rangePermCache map[string]*unifiedRangePermissions // username -> unifiedRangePermissions |
| 210 | |
| 211 | tokenProvider TokenProvider |
| 212 | syncConsistentIndex saveConsistentIndexFunc |
| 213 | } |
| 214 | |
| 215 | func (as *authStore) SetConsistentIndexSyncer(syncer saveConsistentIndexFunc) { |
| 216 | as.syncConsistentIndex = syncer |
| 217 | } |
| 218 | func (as *authStore) AuthEnable() error { |
| 219 | as.enabledMu.Lock() |
| 220 | defer as.enabledMu.Unlock() |
| 221 | if as.enabled { |
| 222 | plog.Noticef("Authentication already enabled") |
| 223 | return nil |
| 224 | } |
| 225 | b := as.be |
| 226 | tx := b.BatchTx() |
| 227 | tx.Lock() |
| 228 | defer func() { |
| 229 | tx.Unlock() |
| 230 | b.ForceCommit() |
| 231 | }() |
| 232 | |
| 233 | u := getUser(tx, rootUser) |
| 234 | if u == nil { |
| 235 | return ErrRootUserNotExist |
| 236 | } |
| 237 | |
| 238 | if !hasRootRole(u) { |
| 239 | return ErrRootRoleNotExist |
| 240 | } |
| 241 | |
| 242 | tx.UnsafePut(authBucketName, enableFlagKey, authEnabled) |
| 243 | |
| 244 | as.enabled = true |
| 245 | as.tokenProvider.enable() |
| 246 | |
| 247 | as.rangePermCache = make(map[string]*unifiedRangePermissions) |
| 248 | |
| 249 | as.setRevision(getRevision(tx)) |
| 250 | |
| 251 | plog.Noticef("Authentication enabled") |
| 252 | |
| 253 | return nil |
| 254 | } |
| 255 | |
| 256 | func (as *authStore) AuthDisable() { |
| 257 | as.enabledMu.Lock() |
| 258 | defer as.enabledMu.Unlock() |
| 259 | if !as.enabled { |
| 260 | return |
| 261 | } |
| 262 | b := as.be |
| 263 | tx := b.BatchTx() |
| 264 | tx.Lock() |
| 265 | tx.UnsafePut(authBucketName, enableFlagKey, authDisabled) |
| 266 | as.commitRevision(tx) |
| 267 | as.saveConsistentIndex(tx) |
| 268 | tx.Unlock() |
| 269 | b.ForceCommit() |
| 270 | |
| 271 | as.enabled = false |
| 272 | as.tokenProvider.disable() |
| 273 | |
| 274 | plog.Noticef("Authentication disabled") |
| 275 | } |
| 276 | |
| 277 | func (as *authStore) Close() error { |
| 278 | as.enabledMu.Lock() |
| 279 | defer as.enabledMu.Unlock() |
| 280 | if !as.enabled { |
| 281 | return nil |
| 282 | } |
| 283 | as.tokenProvider.disable() |
| 284 | return nil |
| 285 | } |
| 286 | |
| 287 | func (as *authStore) Authenticate(ctx context.Context, username, password string) (*pb.AuthenticateResponse, error) { |
| 288 | if !as.isAuthEnabled() { |
| 289 | return nil, ErrAuthNotEnabled |
| 290 | } |
| 291 | |
| 292 | tx := as.be.BatchTx() |
| 293 | tx.Lock() |
| 294 | defer tx.Unlock() |
| 295 | |
| 296 | user := getUser(tx, username) |
| 297 | if user == nil { |
| 298 | return nil, ErrAuthFailed |
| 299 | } |
| 300 | |
| 301 | // Password checking is already performed in the API layer, so we don't need to check for now. |
| 302 | // Staleness of password can be detected with OCC in the API layer, too. |
| 303 | |
| 304 | token, err := as.tokenProvider.assign(ctx, username, as.Revision()) |
| 305 | if err != nil { |
| 306 | return nil, err |
| 307 | } |
| 308 | |
| 309 | plog.Debugf("authorized %s, token is %s", username, token) |
| 310 | return &pb.AuthenticateResponse{Token: token}, nil |
| 311 | } |
| 312 | |
| 313 | func (as *authStore) CheckPassword(username, password string) (uint64, error) { |
| 314 | if !as.isAuthEnabled() { |
| 315 | return 0, ErrAuthNotEnabled |
| 316 | } |
| 317 | |
| 318 | tx := as.be.BatchTx() |
| 319 | tx.Lock() |
| 320 | defer tx.Unlock() |
| 321 | |
| 322 | user := getUser(tx, username) |
| 323 | if user == nil { |
| 324 | return 0, ErrAuthFailed |
| 325 | } |
| 326 | |
| 327 | if bcrypt.CompareHashAndPassword(user.Password, []byte(password)) != nil { |
| 328 | plog.Noticef("authentication failed, invalid password for user %s", username) |
| 329 | return 0, ErrAuthFailed |
| 330 | } |
| 331 | |
| 332 | return getRevision(tx), nil |
| 333 | } |
| 334 | |
| 335 | func (as *authStore) Recover(be backend.Backend) { |
| 336 | enabled := false |
| 337 | as.be = be |
| 338 | tx := be.BatchTx() |
| 339 | tx.Lock() |
| 340 | _, vs := tx.UnsafeRange(authBucketName, enableFlagKey, nil, 0) |
| 341 | if len(vs) == 1 { |
| 342 | if bytes.Equal(vs[0], authEnabled) { |
| 343 | enabled = true |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | as.setRevision(getRevision(tx)) |
| 348 | |
| 349 | tx.Unlock() |
| 350 | |
| 351 | as.enabledMu.Lock() |
| 352 | as.enabled = enabled |
| 353 | as.enabledMu.Unlock() |
| 354 | } |
| 355 | |
| 356 | func (as *authStore) UserAdd(r *pb.AuthUserAddRequest) (*pb.AuthUserAddResponse, error) { |
| 357 | if len(r.Name) == 0 { |
| 358 | return nil, ErrUserEmpty |
| 359 | } |
| 360 | |
| 361 | hashed, err := bcrypt.GenerateFromPassword([]byte(r.Password), BcryptCost) |
| 362 | if err != nil { |
| 363 | plog.Errorf("failed to hash password: %s", err) |
| 364 | return nil, err |
| 365 | } |
| 366 | |
| 367 | tx := as.be.BatchTx() |
| 368 | tx.Lock() |
| 369 | defer tx.Unlock() |
| 370 | |
| 371 | user := getUser(tx, r.Name) |
| 372 | if user != nil { |
| 373 | return nil, ErrUserAlreadyExist |
| 374 | } |
| 375 | |
| 376 | newUser := &authpb.User{ |
| 377 | Name: []byte(r.Name), |
| 378 | Password: hashed, |
| 379 | } |
| 380 | |
| 381 | putUser(tx, newUser) |
| 382 | |
| 383 | as.commitRevision(tx) |
| 384 | as.saveConsistentIndex(tx) |
| 385 | |
| 386 | plog.Noticef("added a new user: %s", r.Name) |
| 387 | |
| 388 | return &pb.AuthUserAddResponse{}, nil |
| 389 | } |
| 390 | |
| 391 | func (as *authStore) UserDelete(r *pb.AuthUserDeleteRequest) (*pb.AuthUserDeleteResponse, error) { |
| 392 | if as.enabled && strings.Compare(r.Name, rootUser) == 0 { |
| 393 | plog.Errorf("the user root must not be deleted") |
| 394 | return nil, ErrInvalidAuthMgmt |
| 395 | } |
| 396 | |
| 397 | tx := as.be.BatchTx() |
| 398 | tx.Lock() |
| 399 | defer tx.Unlock() |
| 400 | |
| 401 | user := getUser(tx, r.Name) |
| 402 | if user == nil { |
| 403 | return nil, ErrUserNotFound |
| 404 | } |
| 405 | |
| 406 | delUser(tx, r.Name) |
| 407 | |
| 408 | as.commitRevision(tx) |
| 409 | as.saveConsistentIndex(tx) |
| 410 | |
| 411 | as.invalidateCachedPerm(r.Name) |
| 412 | as.tokenProvider.invalidateUser(r.Name) |
| 413 | |
| 414 | plog.Noticef("deleted a user: %s", r.Name) |
| 415 | |
| 416 | return &pb.AuthUserDeleteResponse{}, nil |
| 417 | } |
| 418 | |
| 419 | func (as *authStore) UserChangePassword(r *pb.AuthUserChangePasswordRequest) (*pb.AuthUserChangePasswordResponse, error) { |
| 420 | // TODO(mitake): measure the cost of bcrypt.GenerateFromPassword() |
| 421 | // If the cost is too high, we should move the encryption to outside of the raft |
| 422 | hashed, err := bcrypt.GenerateFromPassword([]byte(r.Password), BcryptCost) |
| 423 | if err != nil { |
| 424 | plog.Errorf("failed to hash password: %s", err) |
| 425 | return nil, err |
| 426 | } |
| 427 | |
| 428 | tx := as.be.BatchTx() |
| 429 | tx.Lock() |
| 430 | defer tx.Unlock() |
| 431 | |
| 432 | user := getUser(tx, r.Name) |
| 433 | if user == nil { |
| 434 | return nil, ErrUserNotFound |
| 435 | } |
| 436 | |
| 437 | updatedUser := &authpb.User{ |
| 438 | Name: []byte(r.Name), |
| 439 | Roles: user.Roles, |
| 440 | Password: hashed, |
| 441 | } |
| 442 | |
| 443 | putUser(tx, updatedUser) |
| 444 | |
| 445 | as.commitRevision(tx) |
| 446 | as.saveConsistentIndex(tx) |
| 447 | |
| 448 | as.invalidateCachedPerm(r.Name) |
| 449 | as.tokenProvider.invalidateUser(r.Name) |
| 450 | |
| 451 | plog.Noticef("changed a password of a user: %s", r.Name) |
| 452 | |
| 453 | return &pb.AuthUserChangePasswordResponse{}, nil |
| 454 | } |
| 455 | |
| 456 | func (as *authStore) UserGrantRole(r *pb.AuthUserGrantRoleRequest) (*pb.AuthUserGrantRoleResponse, error) { |
| 457 | tx := as.be.BatchTx() |
| 458 | tx.Lock() |
| 459 | defer tx.Unlock() |
| 460 | |
| 461 | user := getUser(tx, r.User) |
| 462 | if user == nil { |
| 463 | return nil, ErrUserNotFound |
| 464 | } |
| 465 | |
| 466 | if r.Role != rootRole { |
| 467 | role := getRole(tx, r.Role) |
| 468 | if role == nil { |
| 469 | return nil, ErrRoleNotFound |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | idx := sort.SearchStrings(user.Roles, r.Role) |
| 474 | if idx < len(user.Roles) && strings.Compare(user.Roles[idx], r.Role) == 0 { |
| 475 | plog.Warningf("user %s is already granted role %s", r.User, r.Role) |
| 476 | return &pb.AuthUserGrantRoleResponse{}, nil |
| 477 | } |
| 478 | |
| 479 | user.Roles = append(user.Roles, r.Role) |
| 480 | sort.Strings(user.Roles) |
| 481 | |
| 482 | putUser(tx, user) |
| 483 | |
| 484 | as.invalidateCachedPerm(r.User) |
| 485 | |
| 486 | as.commitRevision(tx) |
| 487 | as.saveConsistentIndex(tx) |
| 488 | |
| 489 | plog.Noticef("granted role %s to user %s", r.Role, r.User) |
| 490 | return &pb.AuthUserGrantRoleResponse{}, nil |
| 491 | } |
| 492 | |
| 493 | func (as *authStore) UserGet(r *pb.AuthUserGetRequest) (*pb.AuthUserGetResponse, error) { |
| 494 | tx := as.be.BatchTx() |
| 495 | tx.Lock() |
| 496 | user := getUser(tx, r.Name) |
| 497 | tx.Unlock() |
| 498 | |
| 499 | if user == nil { |
| 500 | return nil, ErrUserNotFound |
| 501 | } |
| 502 | |
| 503 | var resp pb.AuthUserGetResponse |
| 504 | resp.Roles = append(resp.Roles, user.Roles...) |
| 505 | return &resp, nil |
| 506 | } |
| 507 | |
| 508 | func (as *authStore) UserList(r *pb.AuthUserListRequest) (*pb.AuthUserListResponse, error) { |
| 509 | tx := as.be.BatchTx() |
| 510 | tx.Lock() |
| 511 | users := getAllUsers(tx) |
| 512 | tx.Unlock() |
| 513 | |
| 514 | resp := &pb.AuthUserListResponse{Users: make([]string, len(users))} |
| 515 | for i := range users { |
| 516 | resp.Users[i] = string(users[i].Name) |
| 517 | } |
| 518 | return resp, nil |
| 519 | } |
| 520 | |
| 521 | func (as *authStore) UserRevokeRole(r *pb.AuthUserRevokeRoleRequest) (*pb.AuthUserRevokeRoleResponse, error) { |
| 522 | if as.enabled && strings.Compare(r.Name, rootUser) == 0 && strings.Compare(r.Role, rootRole) == 0 { |
| 523 | plog.Errorf("the role root must not be revoked from the user root") |
| 524 | return nil, ErrInvalidAuthMgmt |
| 525 | } |
| 526 | |
| 527 | tx := as.be.BatchTx() |
| 528 | tx.Lock() |
| 529 | defer tx.Unlock() |
| 530 | |
| 531 | user := getUser(tx, r.Name) |
| 532 | if user == nil { |
| 533 | return nil, ErrUserNotFound |
| 534 | } |
| 535 | |
| 536 | updatedUser := &authpb.User{ |
| 537 | Name: user.Name, |
| 538 | Password: user.Password, |
| 539 | } |
| 540 | |
| 541 | for _, role := range user.Roles { |
| 542 | if strings.Compare(role, r.Role) != 0 { |
| 543 | updatedUser.Roles = append(updatedUser.Roles, role) |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | if len(updatedUser.Roles) == len(user.Roles) { |
| 548 | return nil, ErrRoleNotGranted |
| 549 | } |
| 550 | |
| 551 | putUser(tx, updatedUser) |
| 552 | |
| 553 | as.invalidateCachedPerm(r.Name) |
| 554 | |
| 555 | as.commitRevision(tx) |
| 556 | as.saveConsistentIndex(tx) |
| 557 | |
| 558 | plog.Noticef("revoked role %s from user %s", r.Role, r.Name) |
| 559 | return &pb.AuthUserRevokeRoleResponse{}, nil |
| 560 | } |
| 561 | |
| 562 | func (as *authStore) RoleGet(r *pb.AuthRoleGetRequest) (*pb.AuthRoleGetResponse, error) { |
| 563 | tx := as.be.BatchTx() |
| 564 | tx.Lock() |
| 565 | defer tx.Unlock() |
| 566 | |
| 567 | var resp pb.AuthRoleGetResponse |
| 568 | |
| 569 | role := getRole(tx, r.Role) |
| 570 | if role == nil { |
| 571 | return nil, ErrRoleNotFound |
| 572 | } |
| 573 | resp.Perm = append(resp.Perm, role.KeyPermission...) |
| 574 | return &resp, nil |
| 575 | } |
| 576 | |
| 577 | func (as *authStore) RoleList(r *pb.AuthRoleListRequest) (*pb.AuthRoleListResponse, error) { |
| 578 | tx := as.be.BatchTx() |
| 579 | tx.Lock() |
| 580 | roles := getAllRoles(tx) |
| 581 | tx.Unlock() |
| 582 | |
| 583 | resp := &pb.AuthRoleListResponse{Roles: make([]string, len(roles))} |
| 584 | for i := range roles { |
| 585 | resp.Roles[i] = string(roles[i].Name) |
| 586 | } |
| 587 | return resp, nil |
| 588 | } |
| 589 | |
| 590 | func (as *authStore) RoleRevokePermission(r *pb.AuthRoleRevokePermissionRequest) (*pb.AuthRoleRevokePermissionResponse, error) { |
| 591 | tx := as.be.BatchTx() |
| 592 | tx.Lock() |
| 593 | defer tx.Unlock() |
| 594 | |
| 595 | role := getRole(tx, r.Role) |
| 596 | if role == nil { |
| 597 | return nil, ErrRoleNotFound |
| 598 | } |
| 599 | |
| 600 | updatedRole := &authpb.Role{ |
| 601 | Name: role.Name, |
| 602 | } |
| 603 | |
| 604 | for _, perm := range role.KeyPermission { |
| 605 | if !bytes.Equal(perm.Key, []byte(r.Key)) || !bytes.Equal(perm.RangeEnd, []byte(r.RangeEnd)) { |
| 606 | updatedRole.KeyPermission = append(updatedRole.KeyPermission, perm) |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | if len(role.KeyPermission) == len(updatedRole.KeyPermission) { |
| 611 | return nil, ErrPermissionNotGranted |
| 612 | } |
| 613 | |
| 614 | putRole(tx, updatedRole) |
| 615 | |
| 616 | // TODO(mitake): currently single role update invalidates every cache |
| 617 | // It should be optimized. |
| 618 | as.clearCachedPerm() |
| 619 | |
| 620 | as.commitRevision(tx) |
| 621 | as.saveConsistentIndex(tx) |
| 622 | |
| 623 | plog.Noticef("revoked key %s from role %s", r.Key, r.Role) |
| 624 | return &pb.AuthRoleRevokePermissionResponse{}, nil |
| 625 | } |
| 626 | |
| 627 | func (as *authStore) RoleDelete(r *pb.AuthRoleDeleteRequest) (*pb.AuthRoleDeleteResponse, error) { |
| 628 | if as.enabled && strings.Compare(r.Role, rootRole) == 0 { |
| 629 | plog.Errorf("the role root must not be deleted") |
| 630 | return nil, ErrInvalidAuthMgmt |
| 631 | } |
| 632 | |
| 633 | tx := as.be.BatchTx() |
| 634 | tx.Lock() |
| 635 | defer tx.Unlock() |
| 636 | |
| 637 | role := getRole(tx, r.Role) |
| 638 | if role == nil { |
| 639 | return nil, ErrRoleNotFound |
| 640 | } |
| 641 | |
| 642 | delRole(tx, r.Role) |
| 643 | |
| 644 | users := getAllUsers(tx) |
| 645 | for _, user := range users { |
| 646 | updatedUser := &authpb.User{ |
| 647 | Name: user.Name, |
| 648 | Password: user.Password, |
| 649 | } |
| 650 | |
| 651 | for _, role := range user.Roles { |
| 652 | if strings.Compare(role, r.Role) != 0 { |
| 653 | updatedUser.Roles = append(updatedUser.Roles, role) |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | if len(updatedUser.Roles) == len(user.Roles) { |
| 658 | continue |
| 659 | } |
| 660 | |
| 661 | putUser(tx, updatedUser) |
| 662 | |
| 663 | as.invalidateCachedPerm(string(user.Name)) |
| 664 | } |
| 665 | |
| 666 | as.commitRevision(tx) |
| 667 | as.saveConsistentIndex(tx) |
| 668 | |
| 669 | plog.Noticef("deleted role %s", r.Role) |
| 670 | return &pb.AuthRoleDeleteResponse{}, nil |
| 671 | } |
| 672 | |
| 673 | func (as *authStore) RoleAdd(r *pb.AuthRoleAddRequest) (*pb.AuthRoleAddResponse, error) { |
| 674 | tx := as.be.BatchTx() |
| 675 | tx.Lock() |
| 676 | defer tx.Unlock() |
| 677 | |
| 678 | role := getRole(tx, r.Name) |
| 679 | if role != nil { |
| 680 | return nil, ErrRoleAlreadyExist |
| 681 | } |
| 682 | |
| 683 | newRole := &authpb.Role{ |
| 684 | Name: []byte(r.Name), |
| 685 | } |
| 686 | |
| 687 | putRole(tx, newRole) |
| 688 | |
| 689 | as.commitRevision(tx) |
| 690 | as.saveConsistentIndex(tx) |
| 691 | |
| 692 | plog.Noticef("Role %s is created", r.Name) |
| 693 | |
| 694 | return &pb.AuthRoleAddResponse{}, nil |
| 695 | } |
| 696 | |
| 697 | func (as *authStore) authInfoFromToken(ctx context.Context, token string) (*AuthInfo, bool) { |
| 698 | return as.tokenProvider.info(ctx, token, as.Revision()) |
| 699 | } |
| 700 | |
| 701 | type permSlice []*authpb.Permission |
| 702 | |
| 703 | func (perms permSlice) Len() int { |
| 704 | return len(perms) |
| 705 | } |
| 706 | |
| 707 | func (perms permSlice) Less(i, j int) bool { |
| 708 | return bytes.Compare(perms[i].Key, perms[j].Key) < 0 |
| 709 | } |
| 710 | |
| 711 | func (perms permSlice) Swap(i, j int) { |
| 712 | perms[i], perms[j] = perms[j], perms[i] |
| 713 | } |
| 714 | |
| 715 | func (as *authStore) RoleGrantPermission(r *pb.AuthRoleGrantPermissionRequest) (*pb.AuthRoleGrantPermissionResponse, error) { |
| 716 | tx := as.be.BatchTx() |
| 717 | tx.Lock() |
| 718 | defer tx.Unlock() |
| 719 | |
| 720 | role := getRole(tx, r.Name) |
| 721 | if role == nil { |
| 722 | return nil, ErrRoleNotFound |
| 723 | } |
| 724 | |
| 725 | idx := sort.Search(len(role.KeyPermission), func(i int) bool { |
| 726 | return bytes.Compare(role.KeyPermission[i].Key, []byte(r.Perm.Key)) >= 0 |
| 727 | }) |
| 728 | |
| 729 | if idx < len(role.KeyPermission) && bytes.Equal(role.KeyPermission[idx].Key, r.Perm.Key) && bytes.Equal(role.KeyPermission[idx].RangeEnd, r.Perm.RangeEnd) { |
| 730 | // update existing permission |
| 731 | role.KeyPermission[idx].PermType = r.Perm.PermType |
| 732 | } else { |
| 733 | // append new permission to the role |
| 734 | newPerm := &authpb.Permission{ |
| 735 | Key: []byte(r.Perm.Key), |
| 736 | RangeEnd: []byte(r.Perm.RangeEnd), |
| 737 | PermType: r.Perm.PermType, |
| 738 | } |
| 739 | |
| 740 | role.KeyPermission = append(role.KeyPermission, newPerm) |
| 741 | sort.Sort(permSlice(role.KeyPermission)) |
| 742 | } |
| 743 | |
| 744 | putRole(tx, role) |
| 745 | |
| 746 | // TODO(mitake): currently single role update invalidates every cache |
| 747 | // It should be optimized. |
| 748 | as.clearCachedPerm() |
| 749 | |
| 750 | as.commitRevision(tx) |
| 751 | as.saveConsistentIndex(tx) |
| 752 | |
| 753 | plog.Noticef("role %s's permission of key %s is updated as %s", r.Name, r.Perm.Key, authpb.Permission_Type_name[int32(r.Perm.PermType)]) |
| 754 | |
| 755 | return &pb.AuthRoleGrantPermissionResponse{}, nil |
| 756 | } |
| 757 | |
| 758 | func (as *authStore) isOpPermitted(userName string, revision uint64, key, rangeEnd []byte, permTyp authpb.Permission_Type) error { |
| 759 | // TODO(mitake): this function would be costly so we need a caching mechanism |
| 760 | if !as.isAuthEnabled() { |
| 761 | return nil |
| 762 | } |
| 763 | |
| 764 | // only gets rev == 0 when passed AuthInfo{}; no user given |
| 765 | if revision == 0 { |
| 766 | return ErrUserEmpty |
| 767 | } |
| 768 | rev := as.Revision() |
| 769 | if revision < rev { |
| 770 | plog.Warningf("request auth revision is less than current node auth revision,"+ |
| 771 | "current node auth revision is %d,"+ |
| 772 | "request auth revision is %d,"+ |
| 773 | "request key is %s, "+ |
| 774 | "err is %v", rev, revision, key, ErrAuthOldRevision) |
| 775 | return ErrAuthOldRevision |
| 776 | } |
| 777 | |
| 778 | tx := as.be.BatchTx() |
| 779 | tx.Lock() |
| 780 | defer tx.Unlock() |
| 781 | |
| 782 | user := getUser(tx, userName) |
| 783 | if user == nil { |
| 784 | plog.Errorf("invalid user name %s for permission checking", userName) |
| 785 | return ErrPermissionDenied |
| 786 | } |
| 787 | |
| 788 | // root role should have permission on all ranges |
| 789 | if hasRootRole(user) { |
| 790 | return nil |
| 791 | } |
| 792 | |
| 793 | if as.isRangeOpPermitted(tx, userName, key, rangeEnd, permTyp) { |
| 794 | return nil |
| 795 | } |
| 796 | |
| 797 | return ErrPermissionDenied |
| 798 | } |
| 799 | |
| 800 | func (as *authStore) IsPutPermitted(authInfo *AuthInfo, key []byte) error { |
| 801 | return as.isOpPermitted(authInfo.Username, authInfo.Revision, key, nil, authpb.WRITE) |
| 802 | } |
| 803 | |
| 804 | func (as *authStore) IsRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error { |
| 805 | return as.isOpPermitted(authInfo.Username, authInfo.Revision, key, rangeEnd, authpb.READ) |
| 806 | } |
| 807 | |
| 808 | func (as *authStore) IsDeleteRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error { |
| 809 | return as.isOpPermitted(authInfo.Username, authInfo.Revision, key, rangeEnd, authpb.WRITE) |
| 810 | } |
| 811 | |
| 812 | func (as *authStore) IsAdminPermitted(authInfo *AuthInfo) error { |
| 813 | if !as.isAuthEnabled() { |
| 814 | return nil |
| 815 | } |
| 816 | if authInfo == nil || authInfo.Username == "" { |
| 817 | return ErrUserEmpty |
| 818 | } |
| 819 | |
| 820 | tx := as.be.BatchTx() |
| 821 | tx.Lock() |
| 822 | u := getUser(tx, authInfo.Username) |
| 823 | tx.Unlock() |
| 824 | |
| 825 | if u == nil { |
| 826 | return ErrUserNotFound |
| 827 | } |
| 828 | |
| 829 | if !hasRootRole(u) { |
| 830 | return ErrPermissionDenied |
| 831 | } |
| 832 | |
| 833 | return nil |
| 834 | } |
| 835 | |
| 836 | func getUser(tx backend.BatchTx, username string) *authpb.User { |
| 837 | _, vs := tx.UnsafeRange(authUsersBucketName, []byte(username), nil, 0) |
| 838 | if len(vs) == 0 { |
| 839 | return nil |
| 840 | } |
| 841 | |
| 842 | user := &authpb.User{} |
| 843 | err := user.Unmarshal(vs[0]) |
| 844 | if err != nil { |
| 845 | plog.Panicf("failed to unmarshal user struct (name: %s): %s", username, err) |
| 846 | } |
| 847 | return user |
| 848 | } |
| 849 | |
| 850 | func getAllUsers(tx backend.BatchTx) []*authpb.User { |
| 851 | _, vs := tx.UnsafeRange(authUsersBucketName, []byte{0}, []byte{0xff}, -1) |
| 852 | if len(vs) == 0 { |
| 853 | return nil |
| 854 | } |
| 855 | |
| 856 | users := make([]*authpb.User, len(vs)) |
| 857 | for i := range vs { |
| 858 | user := &authpb.User{} |
| 859 | err := user.Unmarshal(vs[i]) |
| 860 | if err != nil { |
| 861 | plog.Panicf("failed to unmarshal user struct: %s", err) |
| 862 | } |
| 863 | users[i] = user |
| 864 | } |
| 865 | return users |
| 866 | } |
| 867 | |
| 868 | func putUser(tx backend.BatchTx, user *authpb.User) { |
| 869 | b, err := user.Marshal() |
| 870 | if err != nil { |
| 871 | plog.Panicf("failed to marshal user struct (name: %s): %s", user.Name, err) |
| 872 | } |
| 873 | tx.UnsafePut(authUsersBucketName, user.Name, b) |
| 874 | } |
| 875 | |
| 876 | func delUser(tx backend.BatchTx, username string) { |
| 877 | tx.UnsafeDelete(authUsersBucketName, []byte(username)) |
| 878 | } |
| 879 | |
| 880 | func getRole(tx backend.BatchTx, rolename string) *authpb.Role { |
| 881 | _, vs := tx.UnsafeRange(authRolesBucketName, []byte(rolename), nil, 0) |
| 882 | if len(vs) == 0 { |
| 883 | return nil |
| 884 | } |
| 885 | |
| 886 | role := &authpb.Role{} |
| 887 | err := role.Unmarshal(vs[0]) |
| 888 | if err != nil { |
| 889 | plog.Panicf("failed to unmarshal role struct (name: %s): %s", rolename, err) |
| 890 | } |
| 891 | return role |
| 892 | } |
| 893 | |
| 894 | func getAllRoles(tx backend.BatchTx) []*authpb.Role { |
| 895 | _, vs := tx.UnsafeRange(authRolesBucketName, []byte{0}, []byte{0xff}, -1) |
| 896 | if len(vs) == 0 { |
| 897 | return nil |
| 898 | } |
| 899 | |
| 900 | roles := make([]*authpb.Role, len(vs)) |
| 901 | for i := range vs { |
| 902 | role := &authpb.Role{} |
| 903 | err := role.Unmarshal(vs[i]) |
| 904 | if err != nil { |
| 905 | plog.Panicf("failed to unmarshal role struct: %s", err) |
| 906 | } |
| 907 | roles[i] = role |
| 908 | } |
| 909 | return roles |
| 910 | } |
| 911 | |
| 912 | func putRole(tx backend.BatchTx, role *authpb.Role) { |
| 913 | b, err := role.Marshal() |
| 914 | if err != nil { |
| 915 | plog.Panicf("failed to marshal role struct (name: %s): %s", role.Name, err) |
| 916 | } |
| 917 | |
| 918 | tx.UnsafePut(authRolesBucketName, []byte(role.Name), b) |
| 919 | } |
| 920 | |
| 921 | func delRole(tx backend.BatchTx, rolename string) { |
| 922 | tx.UnsafeDelete(authRolesBucketName, []byte(rolename)) |
| 923 | } |
| 924 | |
| 925 | func (as *authStore) isAuthEnabled() bool { |
| 926 | as.enabledMu.RLock() |
| 927 | defer as.enabledMu.RUnlock() |
| 928 | return as.enabled |
| 929 | } |
| 930 | |
| 931 | func NewAuthStore(be backend.Backend, tp TokenProvider) *authStore { |
| 932 | tx := be.BatchTx() |
| 933 | tx.Lock() |
| 934 | |
| 935 | tx.UnsafeCreateBucket(authBucketName) |
| 936 | tx.UnsafeCreateBucket(authUsersBucketName) |
| 937 | tx.UnsafeCreateBucket(authRolesBucketName) |
| 938 | |
| 939 | enabled := false |
| 940 | _, vs := tx.UnsafeRange(authBucketName, enableFlagKey, nil, 0) |
| 941 | if len(vs) == 1 { |
| 942 | if bytes.Equal(vs[0], authEnabled) { |
| 943 | enabled = true |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | as := &authStore{ |
| 948 | be: be, |
| 949 | revision: getRevision(tx), |
| 950 | enabled: enabled, |
| 951 | rangePermCache: make(map[string]*unifiedRangePermissions), |
| 952 | tokenProvider: tp, |
| 953 | } |
| 954 | |
| 955 | if enabled { |
| 956 | as.tokenProvider.enable() |
| 957 | } |
| 958 | |
| 959 | if as.Revision() == 0 { |
| 960 | as.commitRevision(tx) |
| 961 | } |
| 962 | |
| 963 | as.setupMetricsReporter() |
| 964 | |
| 965 | tx.Unlock() |
| 966 | be.ForceCommit() |
| 967 | |
| 968 | return as |
| 969 | } |
| 970 | |
| 971 | func hasRootRole(u *authpb.User) bool { |
| 972 | // u.Roles is sorted in UserGrantRole(), so we can use binary search. |
| 973 | idx := sort.SearchStrings(u.Roles, rootRole) |
| 974 | return idx != len(u.Roles) && u.Roles[idx] == rootRole |
| 975 | } |
| 976 | |
| 977 | func (as *authStore) commitRevision(tx backend.BatchTx) { |
| 978 | atomic.AddUint64(&as.revision, 1) |
| 979 | revBytes := make([]byte, revBytesLen) |
| 980 | binary.BigEndian.PutUint64(revBytes, as.Revision()) |
| 981 | tx.UnsafePut(authBucketName, revisionKey, revBytes) |
| 982 | } |
| 983 | |
| 984 | func getRevision(tx backend.BatchTx) uint64 { |
| 985 | _, vs := tx.UnsafeRange(authBucketName, []byte(revisionKey), nil, 0) |
| 986 | if len(vs) != 1 { |
| 987 | // this can happen in the initialization phase |
| 988 | return 0 |
| 989 | } |
| 990 | |
| 991 | return binary.BigEndian.Uint64(vs[0]) |
| 992 | } |
| 993 | |
| 994 | func (as *authStore) setRevision(rev uint64) { |
| 995 | atomic.StoreUint64(&as.revision, rev) |
| 996 | } |
| 997 | |
| 998 | func (as *authStore) Revision() uint64 { |
| 999 | return atomic.LoadUint64(&as.revision) |
| 1000 | } |
| 1001 | |
| 1002 | func (as *authStore) AuthInfoFromTLS(ctx context.Context) *AuthInfo { |
| 1003 | peer, ok := peer.FromContext(ctx) |
| 1004 | if !ok || peer == nil || peer.AuthInfo == nil { |
| 1005 | return nil |
| 1006 | } |
| 1007 | |
| 1008 | tlsInfo := peer.AuthInfo.(credentials.TLSInfo) |
| 1009 | for _, chains := range tlsInfo.State.VerifiedChains { |
| 1010 | for _, chain := range chains { |
| 1011 | cn := chain.Subject.CommonName |
| 1012 | plog.Debugf("found common name %s", cn) |
| 1013 | |
| 1014 | ai := &AuthInfo{ |
| 1015 | Username: cn, |
| 1016 | Revision: as.Revision(), |
| 1017 | } |
| 1018 | md, ok := metadata.FromIncomingContext(ctx) |
| 1019 | if !ok { |
| 1020 | return nil |
| 1021 | } |
| 1022 | |
| 1023 | // gRPC-gateway proxy request to etcd server includes Grpcgateway-Accept |
| 1024 | // header. The proxy uses etcd client server certificate. If the certificate |
| 1025 | // has a CommonName we should never use this for authentication. |
| 1026 | if gw := md["grpcgateway-accept"]; len(gw) > 0 { |
| 1027 | plog.Warningf("ignoring common name in gRPC-gateway proxy request %s", ai.Username) |
| 1028 | return nil |
| 1029 | } |
| 1030 | return ai |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | return nil |
| 1035 | } |
| 1036 | |
| 1037 | func (as *authStore) AuthInfoFromCtx(ctx context.Context) (*AuthInfo, error) { |
| 1038 | md, ok := metadata.FromIncomingContext(ctx) |
| 1039 | if !ok { |
| 1040 | return nil, nil |
| 1041 | } |
| 1042 | |
| 1043 | //TODO(mitake|hexfusion) review unifying key names |
| 1044 | ts, ok := md["token"] |
| 1045 | if !ok { |
| 1046 | ts, ok = md["authorization"] |
| 1047 | } |
| 1048 | if !ok { |
| 1049 | return nil, nil |
| 1050 | } |
| 1051 | |
| 1052 | token := ts[0] |
| 1053 | authInfo, uok := as.authInfoFromToken(ctx, token) |
| 1054 | if !uok { |
| 1055 | plog.Warningf("invalid auth token: %s", token) |
| 1056 | return nil, ErrInvalidAuthToken |
| 1057 | } |
| 1058 | |
| 1059 | return authInfo, nil |
| 1060 | } |
| 1061 | |
| 1062 | func (as *authStore) GenTokenPrefix() (string, error) { |
| 1063 | return as.tokenProvider.genTokenPrefix() |
| 1064 | } |
| 1065 | |
| 1066 | func decomposeOpts(optstr string) (string, map[string]string, error) { |
| 1067 | opts := strings.Split(optstr, ",") |
| 1068 | tokenType := opts[0] |
| 1069 | |
| 1070 | typeSpecificOpts := make(map[string]string) |
| 1071 | for i := 1; i < len(opts); i++ { |
| 1072 | pair := strings.Split(opts[i], "=") |
| 1073 | |
| 1074 | if len(pair) != 2 { |
| 1075 | plog.Errorf("invalid token specific option: %s", optstr) |
| 1076 | return "", nil, ErrInvalidAuthOpts |
| 1077 | } |
| 1078 | |
| 1079 | if _, ok := typeSpecificOpts[pair[0]]; ok { |
| 1080 | plog.Errorf("invalid token specific option, duplicated parameters (%s): %s", pair[0], optstr) |
| 1081 | return "", nil, ErrInvalidAuthOpts |
| 1082 | } |
| 1083 | |
| 1084 | typeSpecificOpts[pair[0]] = pair[1] |
| 1085 | } |
| 1086 | |
| 1087 | return tokenType, typeSpecificOpts, nil |
| 1088 | |
| 1089 | } |
| 1090 | |
| 1091 | // NewTokenProvider creates a new token provider. |
| 1092 | func NewTokenProvider( |
| 1093 | tokenOpts string, |
| 1094 | indexWaiter func(uint64) <-chan struct{}, |
| 1095 | TokenTTL time.Duration) (TokenProvider, error) { |
| 1096 | tokenType, typeSpecificOpts, err := decomposeOpts(tokenOpts) |
| 1097 | if err != nil { |
| 1098 | return nil, ErrInvalidAuthOpts |
| 1099 | } |
| 1100 | |
| 1101 | switch tokenType { |
| 1102 | case tokenTypeSimple: |
| 1103 | plog.Warningf("simple token is not cryptographically signed") |
| 1104 | return newTokenProviderSimple(indexWaiter, TokenTTL), nil |
| 1105 | |
| 1106 | case tokenTypeJWT: |
| 1107 | return newTokenProviderJWT(typeSpecificOpts) |
| 1108 | |
| 1109 | case "": |
| 1110 | return newTokenProviderNop() |
| 1111 | default: |
| 1112 | plog.Errorf("unknown token type: %s", tokenType) |
| 1113 | return nil, ErrInvalidAuthOpts |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | func (as *authStore) WithRoot(ctx context.Context) context.Context { |
| 1118 | if !as.isAuthEnabled() { |
| 1119 | return ctx |
| 1120 | } |
| 1121 | |
| 1122 | var ctxForAssign context.Context |
| 1123 | if ts, ok := as.tokenProvider.(*tokenSimple); ok && ts != nil { |
| 1124 | ctx1 := context.WithValue(ctx, AuthenticateParamIndex{}, uint64(0)) |
| 1125 | prefix, err := ts.genTokenPrefix() |
| 1126 | if err != nil { |
| 1127 | plog.Errorf("failed to generate prefix of internally used token") |
| 1128 | return ctx |
| 1129 | } |
| 1130 | ctxForAssign = context.WithValue(ctx1, AuthenticateParamSimpleTokenPrefix{}, prefix) |
| 1131 | } else { |
| 1132 | ctxForAssign = ctx |
| 1133 | } |
| 1134 | |
| 1135 | token, err := as.tokenProvider.assign(ctxForAssign, "root", as.Revision()) |
| 1136 | if err != nil { |
| 1137 | // this must not happen |
| 1138 | plog.Errorf("failed to assign token for lease revoking: %s", err) |
| 1139 | return ctx |
| 1140 | } |
| 1141 | |
| 1142 | mdMap := map[string]string{ |
| 1143 | "token": token, |
| 1144 | } |
| 1145 | tokenMD := metadata.New(mdMap) |
| 1146 | |
| 1147 | // use "mdIncomingKey{}" since it's called from local etcdserver |
| 1148 | return metadata.NewIncomingContext(ctx, tokenMD) |
| 1149 | } |
| 1150 | |
| 1151 | func (as *authStore) HasRole(user, role string) bool { |
| 1152 | tx := as.be.BatchTx() |
| 1153 | tx.Lock() |
| 1154 | u := getUser(tx, user) |
| 1155 | tx.Unlock() |
| 1156 | |
| 1157 | if u == nil { |
| 1158 | plog.Warningf("tried to check user %s has role %s, but user %s doesn't exist", user, role, user) |
| 1159 | return false |
| 1160 | } |
| 1161 | |
| 1162 | for _, r := range u.Roles { |
| 1163 | if role == r { |
| 1164 | return true |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | return false |
| 1169 | } |
| 1170 | |
| 1171 | func (as *authStore) saveConsistentIndex(tx backend.BatchTx) { |
| 1172 | if as.syncConsistentIndex != nil { |
| 1173 | as.syncConsistentIndex(tx) |
| 1174 | } else { |
| 1175 | plog.Errorf("failed to save consistentIndex,syncConsistentIndex is nil") |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | func (as *authStore) setupMetricsReporter() { |
| 1180 | reportCurrentAuthRevMu.Lock() |
| 1181 | reportCurrentAuthRev = func() float64 { |
| 1182 | return float64(as.Revision()) |
| 1183 | } |
| 1184 | reportCurrentAuthRevMu.Unlock() |
| 1185 | } |