sslobodr | d046be8 | 2019-01-16 10:02:22 -0500 | [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 | |
| 27 | "github.com/coreos/etcd/auth/authpb" |
| 28 | pb "github.com/coreos/etcd/etcdserver/etcdserverpb" |
| 29 | "github.com/coreos/etcd/mvcc/backend" |
| 30 | |
| 31 | "github.com/coreos/pkg/capnslog" |
| 32 | "golang.org/x/crypto/bcrypt" |
| 33 | "google.golang.org/grpc/credentials" |
| 34 | "google.golang.org/grpc/metadata" |
| 35 | "google.golang.org/grpc/peer" |
| 36 | ) |
| 37 | |
| 38 | var ( |
| 39 | enableFlagKey = []byte("authEnabled") |
| 40 | authEnabled = []byte{1} |
| 41 | authDisabled = []byte{0} |
| 42 | |
| 43 | revisionKey = []byte("authRevision") |
| 44 | |
| 45 | authBucketName = []byte("auth") |
| 46 | authUsersBucketName = []byte("authUsers") |
| 47 | authRolesBucketName = []byte("authRoles") |
| 48 | |
| 49 | plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "auth") |
| 50 | |
| 51 | ErrRootUserNotExist = errors.New("auth: root user does not exist") |
| 52 | ErrRootRoleNotExist = errors.New("auth: root user does not have root role") |
| 53 | ErrUserAlreadyExist = errors.New("auth: user already exists") |
| 54 | ErrUserEmpty = errors.New("auth: user name is empty") |
| 55 | ErrUserNotFound = errors.New("auth: user not found") |
| 56 | ErrRoleAlreadyExist = errors.New("auth: role already exists") |
| 57 | ErrRoleNotFound = errors.New("auth: role not found") |
| 58 | ErrAuthFailed = errors.New("auth: authentication failed, invalid user ID or password") |
| 59 | ErrPermissionDenied = errors.New("auth: permission denied") |
| 60 | ErrRoleNotGranted = errors.New("auth: role is not granted to the user") |
| 61 | ErrPermissionNotGranted = errors.New("auth: permission is not granted to the role") |
| 62 | ErrAuthNotEnabled = errors.New("auth: authentication is not enabled") |
| 63 | ErrAuthOldRevision = errors.New("auth: revision in header is old") |
| 64 | ErrInvalidAuthToken = errors.New("auth: invalid auth token") |
| 65 | ErrInvalidAuthOpts = errors.New("auth: invalid auth options") |
| 66 | ErrInvalidAuthMgmt = errors.New("auth: invalid auth management") |
| 67 | |
| 68 | // BcryptCost is the algorithm cost / strength for hashing auth passwords |
| 69 | BcryptCost = bcrypt.DefaultCost |
| 70 | ) |
| 71 | |
| 72 | const ( |
| 73 | rootUser = "root" |
| 74 | rootRole = "root" |
| 75 | |
| 76 | tokenTypeSimple = "simple" |
| 77 | tokenTypeJWT = "jwt" |
| 78 | |
| 79 | revBytesLen = 8 |
| 80 | ) |
| 81 | |
| 82 | type AuthInfo struct { |
| 83 | Username string |
| 84 | Revision uint64 |
| 85 | } |
| 86 | |
| 87 | // AuthenticateParamIndex is used for a key of context in the parameters of Authenticate() |
| 88 | type AuthenticateParamIndex struct{} |
| 89 | |
| 90 | // AuthenticateParamSimpleTokenPrefix is used for a key of context in the parameters of Authenticate() |
| 91 | type AuthenticateParamSimpleTokenPrefix struct{} |
| 92 | |
| 93 | type AuthStore interface { |
| 94 | // AuthEnable turns on the authentication feature |
| 95 | AuthEnable() error |
| 96 | |
| 97 | // AuthDisable turns off the authentication feature |
| 98 | AuthDisable() |
| 99 | |
| 100 | // Authenticate does authentication based on given user name and password |
| 101 | Authenticate(ctx context.Context, username, password string) (*pb.AuthenticateResponse, error) |
| 102 | |
| 103 | // Recover recovers the state of auth store from the given backend |
| 104 | Recover(b backend.Backend) |
| 105 | |
| 106 | // UserAdd adds a new user |
| 107 | UserAdd(r *pb.AuthUserAddRequest) (*pb.AuthUserAddResponse, error) |
| 108 | |
| 109 | // UserDelete deletes a user |
| 110 | UserDelete(r *pb.AuthUserDeleteRequest) (*pb.AuthUserDeleteResponse, error) |
| 111 | |
| 112 | // UserChangePassword changes a password of a user |
| 113 | UserChangePassword(r *pb.AuthUserChangePasswordRequest) (*pb.AuthUserChangePasswordResponse, error) |
| 114 | |
| 115 | // UserGrantRole grants a role to the user |
| 116 | UserGrantRole(r *pb.AuthUserGrantRoleRequest) (*pb.AuthUserGrantRoleResponse, error) |
| 117 | |
| 118 | // UserGet gets the detailed information of a users |
| 119 | UserGet(r *pb.AuthUserGetRequest) (*pb.AuthUserGetResponse, error) |
| 120 | |
| 121 | // UserRevokeRole revokes a role of a user |
| 122 | UserRevokeRole(r *pb.AuthUserRevokeRoleRequest) (*pb.AuthUserRevokeRoleResponse, error) |
| 123 | |
| 124 | // RoleAdd adds a new role |
| 125 | RoleAdd(r *pb.AuthRoleAddRequest) (*pb.AuthRoleAddResponse, error) |
| 126 | |
| 127 | // RoleGrantPermission grants a permission to a role |
| 128 | RoleGrantPermission(r *pb.AuthRoleGrantPermissionRequest) (*pb.AuthRoleGrantPermissionResponse, error) |
| 129 | |
| 130 | // RoleGet gets the detailed information of a role |
| 131 | RoleGet(r *pb.AuthRoleGetRequest) (*pb.AuthRoleGetResponse, error) |
| 132 | |
| 133 | // RoleRevokePermission gets the detailed information of a role |
| 134 | RoleRevokePermission(r *pb.AuthRoleRevokePermissionRequest) (*pb.AuthRoleRevokePermissionResponse, error) |
| 135 | |
| 136 | // RoleDelete gets the detailed information of a role |
| 137 | RoleDelete(r *pb.AuthRoleDeleteRequest) (*pb.AuthRoleDeleteResponse, error) |
| 138 | |
| 139 | // UserList gets a list of all users |
| 140 | UserList(r *pb.AuthUserListRequest) (*pb.AuthUserListResponse, error) |
| 141 | |
| 142 | // RoleList gets a list of all roles |
| 143 | RoleList(r *pb.AuthRoleListRequest) (*pb.AuthRoleListResponse, error) |
| 144 | |
| 145 | // IsPutPermitted checks put permission of the user |
| 146 | IsPutPermitted(authInfo *AuthInfo, key []byte) error |
| 147 | |
| 148 | // IsRangePermitted checks range permission of the user |
| 149 | IsRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error |
| 150 | |
| 151 | // IsDeleteRangePermitted checks delete-range permission of the user |
| 152 | IsDeleteRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error |
| 153 | |
| 154 | // IsAdminPermitted checks admin permission of the user |
| 155 | IsAdminPermitted(authInfo *AuthInfo) error |
| 156 | |
| 157 | // GenTokenPrefix produces a random string in a case of simple token |
| 158 | // in a case of JWT, it produces an empty string |
| 159 | GenTokenPrefix() (string, error) |
| 160 | |
| 161 | // Revision gets current revision of authStore |
| 162 | Revision() uint64 |
| 163 | |
| 164 | // CheckPassword checks a given pair of username and password is correct |
| 165 | CheckPassword(username, password string) (uint64, error) |
| 166 | |
| 167 | // Close does cleanup of AuthStore |
| 168 | Close() error |
| 169 | |
| 170 | // AuthInfoFromCtx gets AuthInfo from gRPC's context |
| 171 | AuthInfoFromCtx(ctx context.Context) (*AuthInfo, error) |
| 172 | |
| 173 | // AuthInfoFromTLS gets AuthInfo from TLS info of gRPC's context |
| 174 | AuthInfoFromTLS(ctx context.Context) *AuthInfo |
| 175 | |
| 176 | // WithRoot generates and installs a token that can be used as a root credential |
| 177 | WithRoot(ctx context.Context) context.Context |
| 178 | |
| 179 | // HasRole checks that user has role |
| 180 | HasRole(user, role string) bool |
| 181 | } |
| 182 | |
| 183 | type TokenProvider interface { |
| 184 | info(ctx context.Context, token string, revision uint64) (*AuthInfo, bool) |
| 185 | assign(ctx context.Context, username string, revision uint64) (string, error) |
| 186 | enable() |
| 187 | disable() |
| 188 | |
| 189 | invalidateUser(string) |
| 190 | genTokenPrefix() (string, error) |
| 191 | } |
| 192 | |
| 193 | type authStore struct { |
| 194 | // atomic operations; need 64-bit align, or 32-bit tests will crash |
| 195 | revision uint64 |
| 196 | |
| 197 | be backend.Backend |
| 198 | enabled bool |
| 199 | enabledMu sync.RWMutex |
| 200 | |
| 201 | rangePermCache map[string]*unifiedRangePermissions // username -> unifiedRangePermissions |
| 202 | |
| 203 | tokenProvider TokenProvider |
| 204 | } |
| 205 | |
| 206 | func (as *authStore) AuthEnable() error { |
| 207 | as.enabledMu.Lock() |
| 208 | defer as.enabledMu.Unlock() |
| 209 | if as.enabled { |
| 210 | plog.Noticef("Authentication already enabled") |
| 211 | return nil |
| 212 | } |
| 213 | b := as.be |
| 214 | tx := b.BatchTx() |
| 215 | tx.Lock() |
| 216 | defer func() { |
| 217 | tx.Unlock() |
| 218 | b.ForceCommit() |
| 219 | }() |
| 220 | |
| 221 | u := getUser(tx, rootUser) |
| 222 | if u == nil { |
| 223 | return ErrRootUserNotExist |
| 224 | } |
| 225 | |
| 226 | if !hasRootRole(u) { |
| 227 | return ErrRootRoleNotExist |
| 228 | } |
| 229 | |
| 230 | tx.UnsafePut(authBucketName, enableFlagKey, authEnabled) |
| 231 | |
| 232 | as.enabled = true |
| 233 | as.tokenProvider.enable() |
| 234 | |
| 235 | as.rangePermCache = make(map[string]*unifiedRangePermissions) |
| 236 | |
| 237 | as.setRevision(getRevision(tx)) |
| 238 | |
| 239 | plog.Noticef("Authentication enabled") |
| 240 | |
| 241 | return nil |
| 242 | } |
| 243 | |
| 244 | func (as *authStore) AuthDisable() { |
| 245 | as.enabledMu.Lock() |
| 246 | defer as.enabledMu.Unlock() |
| 247 | if !as.enabled { |
| 248 | return |
| 249 | } |
| 250 | b := as.be |
| 251 | tx := b.BatchTx() |
| 252 | tx.Lock() |
| 253 | tx.UnsafePut(authBucketName, enableFlagKey, authDisabled) |
| 254 | as.commitRevision(tx) |
| 255 | tx.Unlock() |
| 256 | b.ForceCommit() |
| 257 | |
| 258 | as.enabled = false |
| 259 | as.tokenProvider.disable() |
| 260 | |
| 261 | plog.Noticef("Authentication disabled") |
| 262 | } |
| 263 | |
| 264 | func (as *authStore) Close() error { |
| 265 | as.enabledMu.Lock() |
| 266 | defer as.enabledMu.Unlock() |
| 267 | if !as.enabled { |
| 268 | return nil |
| 269 | } |
| 270 | as.tokenProvider.disable() |
| 271 | return nil |
| 272 | } |
| 273 | |
| 274 | func (as *authStore) Authenticate(ctx context.Context, username, password string) (*pb.AuthenticateResponse, error) { |
| 275 | if !as.isAuthEnabled() { |
| 276 | return nil, ErrAuthNotEnabled |
| 277 | } |
| 278 | |
| 279 | tx := as.be.BatchTx() |
| 280 | tx.Lock() |
| 281 | defer tx.Unlock() |
| 282 | |
| 283 | user := getUser(tx, username) |
| 284 | if user == nil { |
| 285 | return nil, ErrAuthFailed |
| 286 | } |
| 287 | |
| 288 | // Password checking is already performed in the API layer, so we don't need to check for now. |
| 289 | // Staleness of password can be detected with OCC in the API layer, too. |
| 290 | |
| 291 | token, err := as.tokenProvider.assign(ctx, username, as.Revision()) |
| 292 | if err != nil { |
| 293 | return nil, err |
| 294 | } |
| 295 | |
| 296 | plog.Debugf("authorized %s, token is %s", username, token) |
| 297 | return &pb.AuthenticateResponse{Token: token}, nil |
| 298 | } |
| 299 | |
| 300 | func (as *authStore) CheckPassword(username, password string) (uint64, error) { |
| 301 | if !as.isAuthEnabled() { |
| 302 | return 0, ErrAuthNotEnabled |
| 303 | } |
| 304 | |
| 305 | tx := as.be.BatchTx() |
| 306 | tx.Lock() |
| 307 | defer tx.Unlock() |
| 308 | |
| 309 | user := getUser(tx, username) |
| 310 | if user == nil { |
| 311 | return 0, ErrAuthFailed |
| 312 | } |
| 313 | |
| 314 | if bcrypt.CompareHashAndPassword(user.Password, []byte(password)) != nil { |
| 315 | plog.Noticef("authentication failed, invalid password for user %s", username) |
| 316 | return 0, ErrAuthFailed |
| 317 | } |
| 318 | |
| 319 | return getRevision(tx), nil |
| 320 | } |
| 321 | |
| 322 | func (as *authStore) Recover(be backend.Backend) { |
| 323 | enabled := false |
| 324 | as.be = be |
| 325 | tx := be.BatchTx() |
| 326 | tx.Lock() |
| 327 | _, vs := tx.UnsafeRange(authBucketName, enableFlagKey, nil, 0) |
| 328 | if len(vs) == 1 { |
| 329 | if bytes.Equal(vs[0], authEnabled) { |
| 330 | enabled = true |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | as.setRevision(getRevision(tx)) |
| 335 | |
| 336 | tx.Unlock() |
| 337 | |
| 338 | as.enabledMu.Lock() |
| 339 | as.enabled = enabled |
| 340 | as.enabledMu.Unlock() |
| 341 | } |
| 342 | |
| 343 | func (as *authStore) UserAdd(r *pb.AuthUserAddRequest) (*pb.AuthUserAddResponse, error) { |
| 344 | if len(r.Name) == 0 { |
| 345 | return nil, ErrUserEmpty |
| 346 | } |
| 347 | |
| 348 | hashed, err := bcrypt.GenerateFromPassword([]byte(r.Password), BcryptCost) |
| 349 | if err != nil { |
| 350 | plog.Errorf("failed to hash password: %s", err) |
| 351 | return nil, err |
| 352 | } |
| 353 | |
| 354 | tx := as.be.BatchTx() |
| 355 | tx.Lock() |
| 356 | defer tx.Unlock() |
| 357 | |
| 358 | user := getUser(tx, r.Name) |
| 359 | if user != nil { |
| 360 | return nil, ErrUserAlreadyExist |
| 361 | } |
| 362 | |
| 363 | newUser := &authpb.User{ |
| 364 | Name: []byte(r.Name), |
| 365 | Password: hashed, |
| 366 | } |
| 367 | |
| 368 | putUser(tx, newUser) |
| 369 | |
| 370 | as.commitRevision(tx) |
| 371 | |
| 372 | plog.Noticef("added a new user: %s", r.Name) |
| 373 | |
| 374 | return &pb.AuthUserAddResponse{}, nil |
| 375 | } |
| 376 | |
| 377 | func (as *authStore) UserDelete(r *pb.AuthUserDeleteRequest) (*pb.AuthUserDeleteResponse, error) { |
| 378 | if as.enabled && strings.Compare(r.Name, rootUser) == 0 { |
| 379 | plog.Errorf("the user root must not be deleted") |
| 380 | return nil, ErrInvalidAuthMgmt |
| 381 | } |
| 382 | |
| 383 | tx := as.be.BatchTx() |
| 384 | tx.Lock() |
| 385 | defer tx.Unlock() |
| 386 | |
| 387 | user := getUser(tx, r.Name) |
| 388 | if user == nil { |
| 389 | return nil, ErrUserNotFound |
| 390 | } |
| 391 | |
| 392 | delUser(tx, r.Name) |
| 393 | |
| 394 | as.commitRevision(tx) |
| 395 | |
| 396 | as.invalidateCachedPerm(r.Name) |
| 397 | as.tokenProvider.invalidateUser(r.Name) |
| 398 | |
| 399 | plog.Noticef("deleted a user: %s", r.Name) |
| 400 | |
| 401 | return &pb.AuthUserDeleteResponse{}, nil |
| 402 | } |
| 403 | |
| 404 | func (as *authStore) UserChangePassword(r *pb.AuthUserChangePasswordRequest) (*pb.AuthUserChangePasswordResponse, error) { |
| 405 | // TODO(mitake): measure the cost of bcrypt.GenerateFromPassword() |
| 406 | // If the cost is too high, we should move the encryption to outside of the raft |
| 407 | hashed, err := bcrypt.GenerateFromPassword([]byte(r.Password), BcryptCost) |
| 408 | if err != nil { |
| 409 | plog.Errorf("failed to hash password: %s", err) |
| 410 | return nil, err |
| 411 | } |
| 412 | |
| 413 | tx := as.be.BatchTx() |
| 414 | tx.Lock() |
| 415 | defer tx.Unlock() |
| 416 | |
| 417 | user := getUser(tx, r.Name) |
| 418 | if user == nil { |
| 419 | return nil, ErrUserNotFound |
| 420 | } |
| 421 | |
| 422 | updatedUser := &authpb.User{ |
| 423 | Name: []byte(r.Name), |
| 424 | Roles: user.Roles, |
| 425 | Password: hashed, |
| 426 | } |
| 427 | |
| 428 | putUser(tx, updatedUser) |
| 429 | |
| 430 | as.commitRevision(tx) |
| 431 | |
| 432 | as.invalidateCachedPerm(r.Name) |
| 433 | as.tokenProvider.invalidateUser(r.Name) |
| 434 | |
| 435 | plog.Noticef("changed a password of a user: %s", r.Name) |
| 436 | |
| 437 | return &pb.AuthUserChangePasswordResponse{}, nil |
| 438 | } |
| 439 | |
| 440 | func (as *authStore) UserGrantRole(r *pb.AuthUserGrantRoleRequest) (*pb.AuthUserGrantRoleResponse, error) { |
| 441 | tx := as.be.BatchTx() |
| 442 | tx.Lock() |
| 443 | defer tx.Unlock() |
| 444 | |
| 445 | user := getUser(tx, r.User) |
| 446 | if user == nil { |
| 447 | return nil, ErrUserNotFound |
| 448 | } |
| 449 | |
| 450 | if r.Role != rootRole { |
| 451 | role := getRole(tx, r.Role) |
| 452 | if role == nil { |
| 453 | return nil, ErrRoleNotFound |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | idx := sort.SearchStrings(user.Roles, r.Role) |
| 458 | if idx < len(user.Roles) && strings.Compare(user.Roles[idx], r.Role) == 0 { |
| 459 | plog.Warningf("user %s is already granted role %s", r.User, r.Role) |
| 460 | return &pb.AuthUserGrantRoleResponse{}, nil |
| 461 | } |
| 462 | |
| 463 | user.Roles = append(user.Roles, r.Role) |
| 464 | sort.Strings(user.Roles) |
| 465 | |
| 466 | putUser(tx, user) |
| 467 | |
| 468 | as.invalidateCachedPerm(r.User) |
| 469 | |
| 470 | as.commitRevision(tx) |
| 471 | |
| 472 | plog.Noticef("granted role %s to user %s", r.Role, r.User) |
| 473 | return &pb.AuthUserGrantRoleResponse{}, nil |
| 474 | } |
| 475 | |
| 476 | func (as *authStore) UserGet(r *pb.AuthUserGetRequest) (*pb.AuthUserGetResponse, error) { |
| 477 | tx := as.be.BatchTx() |
| 478 | tx.Lock() |
| 479 | user := getUser(tx, r.Name) |
| 480 | tx.Unlock() |
| 481 | |
| 482 | if user == nil { |
| 483 | return nil, ErrUserNotFound |
| 484 | } |
| 485 | |
| 486 | var resp pb.AuthUserGetResponse |
| 487 | resp.Roles = append(resp.Roles, user.Roles...) |
| 488 | return &resp, nil |
| 489 | } |
| 490 | |
| 491 | func (as *authStore) UserList(r *pb.AuthUserListRequest) (*pb.AuthUserListResponse, error) { |
| 492 | tx := as.be.BatchTx() |
| 493 | tx.Lock() |
| 494 | users := getAllUsers(tx) |
| 495 | tx.Unlock() |
| 496 | |
| 497 | resp := &pb.AuthUserListResponse{Users: make([]string, len(users))} |
| 498 | for i := range users { |
| 499 | resp.Users[i] = string(users[i].Name) |
| 500 | } |
| 501 | return resp, nil |
| 502 | } |
| 503 | |
| 504 | func (as *authStore) UserRevokeRole(r *pb.AuthUserRevokeRoleRequest) (*pb.AuthUserRevokeRoleResponse, error) { |
| 505 | if as.enabled && strings.Compare(r.Name, rootUser) == 0 && strings.Compare(r.Role, rootRole) == 0 { |
| 506 | plog.Errorf("the role root must not be revoked from the user root") |
| 507 | return nil, ErrInvalidAuthMgmt |
| 508 | } |
| 509 | |
| 510 | tx := as.be.BatchTx() |
| 511 | tx.Lock() |
| 512 | defer tx.Unlock() |
| 513 | |
| 514 | user := getUser(tx, r.Name) |
| 515 | if user == nil { |
| 516 | return nil, ErrUserNotFound |
| 517 | } |
| 518 | |
| 519 | updatedUser := &authpb.User{ |
| 520 | Name: user.Name, |
| 521 | Password: user.Password, |
| 522 | } |
| 523 | |
| 524 | for _, role := range user.Roles { |
| 525 | if strings.Compare(role, r.Role) != 0 { |
| 526 | updatedUser.Roles = append(updatedUser.Roles, role) |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | if len(updatedUser.Roles) == len(user.Roles) { |
| 531 | return nil, ErrRoleNotGranted |
| 532 | } |
| 533 | |
| 534 | putUser(tx, updatedUser) |
| 535 | |
| 536 | as.invalidateCachedPerm(r.Name) |
| 537 | |
| 538 | as.commitRevision(tx) |
| 539 | |
| 540 | plog.Noticef("revoked role %s from user %s", r.Role, r.Name) |
| 541 | return &pb.AuthUserRevokeRoleResponse{}, nil |
| 542 | } |
| 543 | |
| 544 | func (as *authStore) RoleGet(r *pb.AuthRoleGetRequest) (*pb.AuthRoleGetResponse, error) { |
| 545 | tx := as.be.BatchTx() |
| 546 | tx.Lock() |
| 547 | defer tx.Unlock() |
| 548 | |
| 549 | var resp pb.AuthRoleGetResponse |
| 550 | |
| 551 | role := getRole(tx, r.Role) |
| 552 | if role == nil { |
| 553 | return nil, ErrRoleNotFound |
| 554 | } |
| 555 | resp.Perm = append(resp.Perm, role.KeyPermission...) |
| 556 | return &resp, nil |
| 557 | } |
| 558 | |
| 559 | func (as *authStore) RoleList(r *pb.AuthRoleListRequest) (*pb.AuthRoleListResponse, error) { |
| 560 | tx := as.be.BatchTx() |
| 561 | tx.Lock() |
| 562 | roles := getAllRoles(tx) |
| 563 | tx.Unlock() |
| 564 | |
| 565 | resp := &pb.AuthRoleListResponse{Roles: make([]string, len(roles))} |
| 566 | for i := range roles { |
| 567 | resp.Roles[i] = string(roles[i].Name) |
| 568 | } |
| 569 | return resp, nil |
| 570 | } |
| 571 | |
| 572 | func (as *authStore) RoleRevokePermission(r *pb.AuthRoleRevokePermissionRequest) (*pb.AuthRoleRevokePermissionResponse, error) { |
| 573 | tx := as.be.BatchTx() |
| 574 | tx.Lock() |
| 575 | defer tx.Unlock() |
| 576 | |
| 577 | role := getRole(tx, r.Role) |
| 578 | if role == nil { |
| 579 | return nil, ErrRoleNotFound |
| 580 | } |
| 581 | |
| 582 | updatedRole := &authpb.Role{ |
| 583 | Name: role.Name, |
| 584 | } |
| 585 | |
| 586 | for _, perm := range role.KeyPermission { |
| 587 | if !bytes.Equal(perm.Key, []byte(r.Key)) || !bytes.Equal(perm.RangeEnd, []byte(r.RangeEnd)) { |
| 588 | updatedRole.KeyPermission = append(updatedRole.KeyPermission, perm) |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | if len(role.KeyPermission) == len(updatedRole.KeyPermission) { |
| 593 | return nil, ErrPermissionNotGranted |
| 594 | } |
| 595 | |
| 596 | putRole(tx, updatedRole) |
| 597 | |
| 598 | // TODO(mitake): currently single role update invalidates every cache |
| 599 | // It should be optimized. |
| 600 | as.clearCachedPerm() |
| 601 | |
| 602 | as.commitRevision(tx) |
| 603 | |
| 604 | plog.Noticef("revoked key %s from role %s", r.Key, r.Role) |
| 605 | return &pb.AuthRoleRevokePermissionResponse{}, nil |
| 606 | } |
| 607 | |
| 608 | func (as *authStore) RoleDelete(r *pb.AuthRoleDeleteRequest) (*pb.AuthRoleDeleteResponse, error) { |
| 609 | if as.enabled && strings.Compare(r.Role, rootRole) == 0 { |
| 610 | plog.Errorf("the role root must not be deleted") |
| 611 | return nil, ErrInvalidAuthMgmt |
| 612 | } |
| 613 | |
| 614 | tx := as.be.BatchTx() |
| 615 | tx.Lock() |
| 616 | defer tx.Unlock() |
| 617 | |
| 618 | role := getRole(tx, r.Role) |
| 619 | if role == nil { |
| 620 | return nil, ErrRoleNotFound |
| 621 | } |
| 622 | |
| 623 | delRole(tx, r.Role) |
| 624 | |
| 625 | users := getAllUsers(tx) |
| 626 | for _, user := range users { |
| 627 | updatedUser := &authpb.User{ |
| 628 | Name: user.Name, |
| 629 | Password: user.Password, |
| 630 | } |
| 631 | |
| 632 | for _, role := range user.Roles { |
| 633 | if strings.Compare(role, r.Role) != 0 { |
| 634 | updatedUser.Roles = append(updatedUser.Roles, role) |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | if len(updatedUser.Roles) == len(user.Roles) { |
| 639 | continue |
| 640 | } |
| 641 | |
| 642 | putUser(tx, updatedUser) |
| 643 | |
| 644 | as.invalidateCachedPerm(string(user.Name)) |
| 645 | } |
| 646 | |
| 647 | as.commitRevision(tx) |
| 648 | |
| 649 | plog.Noticef("deleted role %s", r.Role) |
| 650 | return &pb.AuthRoleDeleteResponse{}, nil |
| 651 | } |
| 652 | |
| 653 | func (as *authStore) RoleAdd(r *pb.AuthRoleAddRequest) (*pb.AuthRoleAddResponse, error) { |
| 654 | tx := as.be.BatchTx() |
| 655 | tx.Lock() |
| 656 | defer tx.Unlock() |
| 657 | |
| 658 | role := getRole(tx, r.Name) |
| 659 | if role != nil { |
| 660 | return nil, ErrRoleAlreadyExist |
| 661 | } |
| 662 | |
| 663 | newRole := &authpb.Role{ |
| 664 | Name: []byte(r.Name), |
| 665 | } |
| 666 | |
| 667 | putRole(tx, newRole) |
| 668 | |
| 669 | as.commitRevision(tx) |
| 670 | |
| 671 | plog.Noticef("Role %s is created", r.Name) |
| 672 | |
| 673 | return &pb.AuthRoleAddResponse{}, nil |
| 674 | } |
| 675 | |
| 676 | func (as *authStore) authInfoFromToken(ctx context.Context, token string) (*AuthInfo, bool) { |
| 677 | return as.tokenProvider.info(ctx, token, as.Revision()) |
| 678 | } |
| 679 | |
| 680 | type permSlice []*authpb.Permission |
| 681 | |
| 682 | func (perms permSlice) Len() int { |
| 683 | return len(perms) |
| 684 | } |
| 685 | |
| 686 | func (perms permSlice) Less(i, j int) bool { |
| 687 | return bytes.Compare(perms[i].Key, perms[j].Key) < 0 |
| 688 | } |
| 689 | |
| 690 | func (perms permSlice) Swap(i, j int) { |
| 691 | perms[i], perms[j] = perms[j], perms[i] |
| 692 | } |
| 693 | |
| 694 | func (as *authStore) RoleGrantPermission(r *pb.AuthRoleGrantPermissionRequest) (*pb.AuthRoleGrantPermissionResponse, error) { |
| 695 | tx := as.be.BatchTx() |
| 696 | tx.Lock() |
| 697 | defer tx.Unlock() |
| 698 | |
| 699 | role := getRole(tx, r.Name) |
| 700 | if role == nil { |
| 701 | return nil, ErrRoleNotFound |
| 702 | } |
| 703 | |
| 704 | idx := sort.Search(len(role.KeyPermission), func(i int) bool { |
| 705 | return bytes.Compare(role.KeyPermission[i].Key, []byte(r.Perm.Key)) >= 0 |
| 706 | }) |
| 707 | |
| 708 | if idx < len(role.KeyPermission) && bytes.Equal(role.KeyPermission[idx].Key, r.Perm.Key) && bytes.Equal(role.KeyPermission[idx].RangeEnd, r.Perm.RangeEnd) { |
| 709 | // update existing permission |
| 710 | role.KeyPermission[idx].PermType = r.Perm.PermType |
| 711 | } else { |
| 712 | // append new permission to the role |
| 713 | newPerm := &authpb.Permission{ |
| 714 | Key: []byte(r.Perm.Key), |
| 715 | RangeEnd: []byte(r.Perm.RangeEnd), |
| 716 | PermType: r.Perm.PermType, |
| 717 | } |
| 718 | |
| 719 | role.KeyPermission = append(role.KeyPermission, newPerm) |
| 720 | sort.Sort(permSlice(role.KeyPermission)) |
| 721 | } |
| 722 | |
| 723 | putRole(tx, role) |
| 724 | |
| 725 | // TODO(mitake): currently single role update invalidates every cache |
| 726 | // It should be optimized. |
| 727 | as.clearCachedPerm() |
| 728 | |
| 729 | as.commitRevision(tx) |
| 730 | |
| 731 | 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)]) |
| 732 | |
| 733 | return &pb.AuthRoleGrantPermissionResponse{}, nil |
| 734 | } |
| 735 | |
| 736 | func (as *authStore) isOpPermitted(userName string, revision uint64, key, rangeEnd []byte, permTyp authpb.Permission_Type) error { |
| 737 | // TODO(mitake): this function would be costly so we need a caching mechanism |
| 738 | if !as.isAuthEnabled() { |
| 739 | return nil |
| 740 | } |
| 741 | |
| 742 | // only gets rev == 0 when passed AuthInfo{}; no user given |
| 743 | if revision == 0 { |
| 744 | return ErrUserEmpty |
| 745 | } |
| 746 | |
| 747 | if revision < as.Revision() { |
| 748 | return ErrAuthOldRevision |
| 749 | } |
| 750 | |
| 751 | tx := as.be.BatchTx() |
| 752 | tx.Lock() |
| 753 | defer tx.Unlock() |
| 754 | |
| 755 | user := getUser(tx, userName) |
| 756 | if user == nil { |
| 757 | plog.Errorf("invalid user name %s for permission checking", userName) |
| 758 | return ErrPermissionDenied |
| 759 | } |
| 760 | |
| 761 | // root role should have permission on all ranges |
| 762 | if hasRootRole(user) { |
| 763 | return nil |
| 764 | } |
| 765 | |
| 766 | if as.isRangeOpPermitted(tx, userName, key, rangeEnd, permTyp) { |
| 767 | return nil |
| 768 | } |
| 769 | |
| 770 | return ErrPermissionDenied |
| 771 | } |
| 772 | |
| 773 | func (as *authStore) IsPutPermitted(authInfo *AuthInfo, key []byte) error { |
| 774 | return as.isOpPermitted(authInfo.Username, authInfo.Revision, key, nil, authpb.WRITE) |
| 775 | } |
| 776 | |
| 777 | func (as *authStore) IsRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error { |
| 778 | return as.isOpPermitted(authInfo.Username, authInfo.Revision, key, rangeEnd, authpb.READ) |
| 779 | } |
| 780 | |
| 781 | func (as *authStore) IsDeleteRangePermitted(authInfo *AuthInfo, key, rangeEnd []byte) error { |
| 782 | return as.isOpPermitted(authInfo.Username, authInfo.Revision, key, rangeEnd, authpb.WRITE) |
| 783 | } |
| 784 | |
| 785 | func (as *authStore) IsAdminPermitted(authInfo *AuthInfo) error { |
| 786 | if !as.isAuthEnabled() { |
| 787 | return nil |
| 788 | } |
| 789 | if authInfo == nil { |
| 790 | return ErrUserEmpty |
| 791 | } |
| 792 | |
| 793 | tx := as.be.BatchTx() |
| 794 | tx.Lock() |
| 795 | u := getUser(tx, authInfo.Username) |
| 796 | tx.Unlock() |
| 797 | |
| 798 | if u == nil { |
| 799 | return ErrUserNotFound |
| 800 | } |
| 801 | |
| 802 | if !hasRootRole(u) { |
| 803 | return ErrPermissionDenied |
| 804 | } |
| 805 | |
| 806 | return nil |
| 807 | } |
| 808 | |
| 809 | func getUser(tx backend.BatchTx, username string) *authpb.User { |
| 810 | _, vs := tx.UnsafeRange(authUsersBucketName, []byte(username), nil, 0) |
| 811 | if len(vs) == 0 { |
| 812 | return nil |
| 813 | } |
| 814 | |
| 815 | user := &authpb.User{} |
| 816 | err := user.Unmarshal(vs[0]) |
| 817 | if err != nil { |
| 818 | plog.Panicf("failed to unmarshal user struct (name: %s): %s", username, err) |
| 819 | } |
| 820 | return user |
| 821 | } |
| 822 | |
| 823 | func getAllUsers(tx backend.BatchTx) []*authpb.User { |
| 824 | _, vs := tx.UnsafeRange(authUsersBucketName, []byte{0}, []byte{0xff}, -1) |
| 825 | if len(vs) == 0 { |
| 826 | return nil |
| 827 | } |
| 828 | |
| 829 | users := make([]*authpb.User, len(vs)) |
| 830 | for i := range vs { |
| 831 | user := &authpb.User{} |
| 832 | err := user.Unmarshal(vs[i]) |
| 833 | if err != nil { |
| 834 | plog.Panicf("failed to unmarshal user struct: %s", err) |
| 835 | } |
| 836 | users[i] = user |
| 837 | } |
| 838 | return users |
| 839 | } |
| 840 | |
| 841 | func putUser(tx backend.BatchTx, user *authpb.User) { |
| 842 | b, err := user.Marshal() |
| 843 | if err != nil { |
| 844 | plog.Panicf("failed to marshal user struct (name: %s): %s", user.Name, err) |
| 845 | } |
| 846 | tx.UnsafePut(authUsersBucketName, user.Name, b) |
| 847 | } |
| 848 | |
| 849 | func delUser(tx backend.BatchTx, username string) { |
| 850 | tx.UnsafeDelete(authUsersBucketName, []byte(username)) |
| 851 | } |
| 852 | |
| 853 | func getRole(tx backend.BatchTx, rolename string) *authpb.Role { |
| 854 | _, vs := tx.UnsafeRange(authRolesBucketName, []byte(rolename), nil, 0) |
| 855 | if len(vs) == 0 { |
| 856 | return nil |
| 857 | } |
| 858 | |
| 859 | role := &authpb.Role{} |
| 860 | err := role.Unmarshal(vs[0]) |
| 861 | if err != nil { |
| 862 | plog.Panicf("failed to unmarshal role struct (name: %s): %s", rolename, err) |
| 863 | } |
| 864 | return role |
| 865 | } |
| 866 | |
| 867 | func getAllRoles(tx backend.BatchTx) []*authpb.Role { |
| 868 | _, vs := tx.UnsafeRange(authRolesBucketName, []byte{0}, []byte{0xff}, -1) |
| 869 | if len(vs) == 0 { |
| 870 | return nil |
| 871 | } |
| 872 | |
| 873 | roles := make([]*authpb.Role, len(vs)) |
| 874 | for i := range vs { |
| 875 | role := &authpb.Role{} |
| 876 | err := role.Unmarshal(vs[i]) |
| 877 | if err != nil { |
| 878 | plog.Panicf("failed to unmarshal role struct: %s", err) |
| 879 | } |
| 880 | roles[i] = role |
| 881 | } |
| 882 | return roles |
| 883 | } |
| 884 | |
| 885 | func putRole(tx backend.BatchTx, role *authpb.Role) { |
| 886 | b, err := role.Marshal() |
| 887 | if err != nil { |
| 888 | plog.Panicf("failed to marshal role struct (name: %s): %s", role.Name, err) |
| 889 | } |
| 890 | |
| 891 | tx.UnsafePut(authRolesBucketName, []byte(role.Name), b) |
| 892 | } |
| 893 | |
| 894 | func delRole(tx backend.BatchTx, rolename string) { |
| 895 | tx.UnsafeDelete(authRolesBucketName, []byte(rolename)) |
| 896 | } |
| 897 | |
| 898 | func (as *authStore) isAuthEnabled() bool { |
| 899 | as.enabledMu.RLock() |
| 900 | defer as.enabledMu.RUnlock() |
| 901 | return as.enabled |
| 902 | } |
| 903 | |
| 904 | func NewAuthStore(be backend.Backend, tp TokenProvider) *authStore { |
| 905 | tx := be.BatchTx() |
| 906 | tx.Lock() |
| 907 | |
| 908 | tx.UnsafeCreateBucket(authBucketName) |
| 909 | tx.UnsafeCreateBucket(authUsersBucketName) |
| 910 | tx.UnsafeCreateBucket(authRolesBucketName) |
| 911 | |
| 912 | enabled := false |
| 913 | _, vs := tx.UnsafeRange(authBucketName, enableFlagKey, nil, 0) |
| 914 | if len(vs) == 1 { |
| 915 | if bytes.Equal(vs[0], authEnabled) { |
| 916 | enabled = true |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | as := &authStore{ |
| 921 | be: be, |
| 922 | revision: getRevision(tx), |
| 923 | enabled: enabled, |
| 924 | rangePermCache: make(map[string]*unifiedRangePermissions), |
| 925 | tokenProvider: tp, |
| 926 | } |
| 927 | |
| 928 | if enabled { |
| 929 | as.tokenProvider.enable() |
| 930 | } |
| 931 | |
| 932 | if as.Revision() == 0 { |
| 933 | as.commitRevision(tx) |
| 934 | } |
| 935 | |
| 936 | tx.Unlock() |
| 937 | be.ForceCommit() |
| 938 | |
| 939 | return as |
| 940 | } |
| 941 | |
| 942 | func hasRootRole(u *authpb.User) bool { |
| 943 | // u.Roles is sorted in UserGrantRole(), so we can use binary search. |
| 944 | idx := sort.SearchStrings(u.Roles, rootRole) |
| 945 | return idx != len(u.Roles) && u.Roles[idx] == rootRole |
| 946 | } |
| 947 | |
| 948 | func (as *authStore) commitRevision(tx backend.BatchTx) { |
| 949 | atomic.AddUint64(&as.revision, 1) |
| 950 | revBytes := make([]byte, revBytesLen) |
| 951 | binary.BigEndian.PutUint64(revBytes, as.Revision()) |
| 952 | tx.UnsafePut(authBucketName, revisionKey, revBytes) |
| 953 | } |
| 954 | |
| 955 | func getRevision(tx backend.BatchTx) uint64 { |
| 956 | _, vs := tx.UnsafeRange(authBucketName, []byte(revisionKey), nil, 0) |
| 957 | if len(vs) != 1 { |
| 958 | // this can happen in the initialization phase |
| 959 | return 0 |
| 960 | } |
| 961 | |
| 962 | return binary.BigEndian.Uint64(vs[0]) |
| 963 | } |
| 964 | |
| 965 | func (as *authStore) setRevision(rev uint64) { |
| 966 | atomic.StoreUint64(&as.revision, rev) |
| 967 | } |
| 968 | |
| 969 | func (as *authStore) Revision() uint64 { |
| 970 | return atomic.LoadUint64(&as.revision) |
| 971 | } |
| 972 | |
| 973 | func (as *authStore) AuthInfoFromTLS(ctx context.Context) *AuthInfo { |
| 974 | peer, ok := peer.FromContext(ctx) |
| 975 | if !ok || peer == nil || peer.AuthInfo == nil { |
| 976 | return nil |
| 977 | } |
| 978 | |
| 979 | tlsInfo := peer.AuthInfo.(credentials.TLSInfo) |
| 980 | for _, chains := range tlsInfo.State.VerifiedChains { |
| 981 | for _, chain := range chains { |
| 982 | cn := chain.Subject.CommonName |
| 983 | plog.Debugf("found common name %s", cn) |
| 984 | |
| 985 | ai := &AuthInfo{ |
| 986 | Username: cn, |
| 987 | Revision: as.Revision(), |
| 988 | } |
| 989 | md, ok := metadata.FromIncomingContext(ctx) |
| 990 | if !ok { |
| 991 | return nil |
| 992 | } |
| 993 | |
| 994 | // gRPC-gateway proxy request to etcd server includes Grpcgateway-Accept |
| 995 | // header. The proxy uses etcd client server certificate. If the certificate |
| 996 | // has a CommonName we should never use this for authentication. |
| 997 | if gw := md["grpcgateway-accept"]; len(gw) > 0 { |
| 998 | plog.Warningf("ignoring common name in gRPC-gateway proxy request %s", ai.Username) |
| 999 | return nil |
| 1000 | } |
| 1001 | return ai |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | return nil |
| 1006 | } |
| 1007 | |
| 1008 | func (as *authStore) AuthInfoFromCtx(ctx context.Context) (*AuthInfo, error) { |
| 1009 | md, ok := metadata.FromIncomingContext(ctx) |
| 1010 | if !ok { |
| 1011 | return nil, nil |
| 1012 | } |
| 1013 | |
| 1014 | //TODO(mitake|hexfusion) review unifying key names |
| 1015 | ts, ok := md["token"] |
| 1016 | if !ok { |
| 1017 | ts, ok = md["authorization"] |
| 1018 | } |
| 1019 | if !ok { |
| 1020 | return nil, nil |
| 1021 | } |
| 1022 | |
| 1023 | token := ts[0] |
| 1024 | authInfo, uok := as.authInfoFromToken(ctx, token) |
| 1025 | if !uok { |
| 1026 | plog.Warningf("invalid auth token: %s", token) |
| 1027 | return nil, ErrInvalidAuthToken |
| 1028 | } |
| 1029 | |
| 1030 | return authInfo, nil |
| 1031 | } |
| 1032 | |
| 1033 | func (as *authStore) GenTokenPrefix() (string, error) { |
| 1034 | return as.tokenProvider.genTokenPrefix() |
| 1035 | } |
| 1036 | |
| 1037 | func decomposeOpts(optstr string) (string, map[string]string, error) { |
| 1038 | opts := strings.Split(optstr, ",") |
| 1039 | tokenType := opts[0] |
| 1040 | |
| 1041 | typeSpecificOpts := make(map[string]string) |
| 1042 | for i := 1; i < len(opts); i++ { |
| 1043 | pair := strings.Split(opts[i], "=") |
| 1044 | |
| 1045 | if len(pair) != 2 { |
| 1046 | plog.Errorf("invalid token specific option: %s", optstr) |
| 1047 | return "", nil, ErrInvalidAuthOpts |
| 1048 | } |
| 1049 | |
| 1050 | if _, ok := typeSpecificOpts[pair[0]]; ok { |
| 1051 | plog.Errorf("invalid token specific option, duplicated parameters (%s): %s", pair[0], optstr) |
| 1052 | return "", nil, ErrInvalidAuthOpts |
| 1053 | } |
| 1054 | |
| 1055 | typeSpecificOpts[pair[0]] = pair[1] |
| 1056 | } |
| 1057 | |
| 1058 | return tokenType, typeSpecificOpts, nil |
| 1059 | |
| 1060 | } |
| 1061 | |
| 1062 | func NewTokenProvider(tokenOpts string, indexWaiter func(uint64) <-chan struct{}) (TokenProvider, error) { |
| 1063 | tokenType, typeSpecificOpts, err := decomposeOpts(tokenOpts) |
| 1064 | if err != nil { |
| 1065 | return nil, ErrInvalidAuthOpts |
| 1066 | } |
| 1067 | |
| 1068 | switch tokenType { |
| 1069 | case tokenTypeSimple: |
| 1070 | plog.Warningf("simple token is not cryptographically signed") |
| 1071 | return newTokenProviderSimple(indexWaiter), nil |
| 1072 | |
| 1073 | case tokenTypeJWT: |
| 1074 | return newTokenProviderJWT(typeSpecificOpts) |
| 1075 | |
| 1076 | case "": |
| 1077 | return newTokenProviderNop() |
| 1078 | default: |
| 1079 | plog.Errorf("unknown token type: %s", tokenType) |
| 1080 | return nil, ErrInvalidAuthOpts |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | func (as *authStore) WithRoot(ctx context.Context) context.Context { |
| 1085 | if !as.isAuthEnabled() { |
| 1086 | return ctx |
| 1087 | } |
| 1088 | |
| 1089 | var ctxForAssign context.Context |
| 1090 | if ts, ok := as.tokenProvider.(*tokenSimple); ok && ts != nil { |
| 1091 | ctx1 := context.WithValue(ctx, AuthenticateParamIndex{}, uint64(0)) |
| 1092 | prefix, err := ts.genTokenPrefix() |
| 1093 | if err != nil { |
| 1094 | plog.Errorf("failed to generate prefix of internally used token") |
| 1095 | return ctx |
| 1096 | } |
| 1097 | ctxForAssign = context.WithValue(ctx1, AuthenticateParamSimpleTokenPrefix{}, prefix) |
| 1098 | } else { |
| 1099 | ctxForAssign = ctx |
| 1100 | } |
| 1101 | |
| 1102 | token, err := as.tokenProvider.assign(ctxForAssign, "root", as.Revision()) |
| 1103 | if err != nil { |
| 1104 | // this must not happen |
| 1105 | plog.Errorf("failed to assign token for lease revoking: %s", err) |
| 1106 | return ctx |
| 1107 | } |
| 1108 | |
| 1109 | mdMap := map[string]string{ |
| 1110 | "token": token, |
| 1111 | } |
| 1112 | tokenMD := metadata.New(mdMap) |
| 1113 | |
| 1114 | // use "mdIncomingKey{}" since it's called from local etcdserver |
| 1115 | return metadata.NewIncomingContext(ctx, tokenMD) |
| 1116 | } |
| 1117 | |
| 1118 | func (as *authStore) HasRole(user, role string) bool { |
| 1119 | tx := as.be.BatchTx() |
| 1120 | tx.Lock() |
| 1121 | u := getUser(tx, user) |
| 1122 | tx.Unlock() |
| 1123 | |
| 1124 | if u == nil { |
| 1125 | plog.Warningf("tried to check user %s has role %s, but user %s doesn't exist", user, role, user) |
| 1126 | return false |
| 1127 | } |
| 1128 | |
| 1129 | for _, r := range u.Roles { |
| 1130 | if role == r { |
| 1131 | return true |
| 1132 | } |
| 1133 | } |
| 1134 | |
| 1135 | return false |
| 1136 | } |