mirror of
https://github.com/minio/minio
synced 2024-09-20 16:32:18 +00:00
2dc8ac1e62
anything that is stuck on the disk today can cause latency spikes for all incoming S3 I/O, we need to have this de-coupled so that we can make sure that latency in loading credentials are not reflected back to the S3 API calls. The approach this PR takes is by checking if the calls were updated just in case when the IAM load was in progress, so that we can use merge instead of "replacement" to avoid missing state.
1760 lines
50 KiB
Go
1760 lines
50 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"bytes"
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"context"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"math/rand"
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"path"
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"sort"
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"strings"
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"sync"
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"sync/atomic"
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"time"
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humanize "github.com/dustin/go-humanize"
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"github.com/minio/madmin-go"
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"github.com/minio/minio-go/v7/pkg/set"
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"github.com/minio/minio/internal/arn"
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"github.com/minio/minio/internal/auth"
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"github.com/minio/minio/internal/color"
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"github.com/minio/minio/internal/jwt"
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"github.com/minio/minio/internal/logger"
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iampolicy "github.com/minio/pkg/iam/policy"
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etcd "go.etcd.io/etcd/client/v3"
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)
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// UsersSysType - defines the type of users and groups system that is
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// active on the server.
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type UsersSysType string
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// Types of users configured in the server.
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const (
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// This mode uses the internal users system in MinIO.
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MinIOUsersSysType UsersSysType = "MinIOUsersSys"
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// This mode uses users and groups from a configured LDAP
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// server.
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LDAPUsersSysType UsersSysType = "LDAPUsersSys"
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)
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const (
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statusEnabled = "enabled"
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statusDisabled = "disabled"
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)
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const (
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embeddedPolicyType = "embedded-policy"
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inheritedPolicyType = "inherited-policy"
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)
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// IAMSys - config system.
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type IAMSys struct {
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// Need to keep them here to keep alignment - ref: https://golang.org/pkg/sync/atomic/#pkg-note-BUG
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// metrics
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LastRefreshTimeUnixNano uint64
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LastRefreshDurationMilliseconds uint64
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TotalRefreshSuccesses uint64
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TotalRefreshFailures uint64
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sync.Mutex
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iamRefreshInterval time.Duration
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usersSysType UsersSysType
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rolesMap map[arn.ARN]string
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// Persistence layer for IAM subsystem
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store *IAMStoreSys
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// configLoaded will be closed and remain so after first load.
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configLoaded chan struct{}
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}
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// IAMUserType represents a user type inside MinIO server
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type IAMUserType int
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const (
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regUser IAMUserType = iota
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stsUser
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svcUser
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)
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// LoadGroup - loads a specific group from storage, and updates the
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// memberships cache. If the specified group does not exist in
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// storage, it is removed from in-memory maps as well - this
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// simplifies the implementation for group removal. This is called
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// only via IAM notifications.
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func (sys *IAMSys) LoadGroup(ctx context.Context, objAPI ObjectLayer, group string) error {
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if !sys.Initialized() {
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return errServerNotInitialized
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}
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return sys.store.GroupNotificationHandler(ctx, group)
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}
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// LoadPolicy - reloads a specific canned policy from backend disks or etcd.
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func (sys *IAMSys) LoadPolicy(ctx context.Context, objAPI ObjectLayer, policyName string) error {
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if !sys.Initialized() {
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return errServerNotInitialized
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}
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return sys.store.PolicyNotificationHandler(ctx, policyName)
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}
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// LoadPolicyMapping - loads the mapped policy for a user or group
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// from storage into server memory.
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func (sys *IAMSys) LoadPolicyMapping(ctx context.Context, objAPI ObjectLayer, userOrGroup string, isGroup bool) error {
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if !sys.Initialized() {
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return errServerNotInitialized
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}
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// In case of LDAP, policy mappings are only applicable to sts users.
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userType := regUser
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if sys.usersSysType == LDAPUsersSysType {
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userType = stsUser
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}
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return sys.store.PolicyMappingNotificationHandler(ctx, userOrGroup, isGroup, userType)
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}
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// LoadUser - reloads a specific user from backend disks or etcd.
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func (sys *IAMSys) LoadUser(ctx context.Context, objAPI ObjectLayer, accessKey string, userType IAMUserType) error {
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if !sys.Initialized() {
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return errServerNotInitialized
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}
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return sys.store.UserNotificationHandler(ctx, accessKey, userType)
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}
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// LoadServiceAccount - reloads a specific service account from backend disks or etcd.
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func (sys *IAMSys) LoadServiceAccount(ctx context.Context, accessKey string) error {
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if !sys.Initialized() {
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return errServerNotInitialized
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}
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return sys.store.UserNotificationHandler(ctx, accessKey, svcUser)
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}
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// Perform IAM configuration migration.
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func (sys *IAMSys) doIAMConfigMigration(ctx context.Context) error {
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return sys.store.migrateBackendFormat(ctx)
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}
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// initStore initializes IAM stores
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func (sys *IAMSys) initStore(objAPI ObjectLayer, etcdClient *etcd.Client) {
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if globalLDAPConfig.Enabled {
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sys.EnableLDAPSys()
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}
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if etcdClient == nil {
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if globalIsGateway {
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if globalGatewayName == NASBackendGateway {
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sys.store = &IAMStoreSys{newIAMObjectStore(objAPI, sys.usersSysType)}
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} else {
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sys.store = &IAMStoreSys{newIAMDummyStore(sys.usersSysType)}
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logger.Info("WARNING: %s gateway is running in-memory IAM store, for persistence please configure etcd",
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globalGatewayName)
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}
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} else {
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sys.store = &IAMStoreSys{newIAMObjectStore(objAPI, sys.usersSysType)}
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}
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} else {
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sys.store = &IAMStoreSys{newIAMEtcdStore(etcdClient, sys.usersSysType)}
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}
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}
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// Initialized checks if IAM is initialized
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func (sys *IAMSys) Initialized() bool {
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if sys == nil {
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return false
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}
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sys.Lock()
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defer sys.Unlock()
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return sys.store != nil
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}
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// Load - loads all credentials, policies and policy mappings.
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func (sys *IAMSys) Load(ctx context.Context) error {
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loadStartTime := time.Now()
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err := sys.store.LoadIAMCache(ctx)
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if err != nil {
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atomic.AddUint64(&sys.TotalRefreshFailures, 1)
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return err
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}
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loadDuration := time.Since(loadStartTime)
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atomic.StoreUint64(&sys.LastRefreshDurationMilliseconds, uint64(loadDuration.Milliseconds()))
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atomic.StoreUint64(&sys.LastRefreshTimeUnixNano, uint64(loadStartTime.Add(loadDuration).UnixNano()))
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atomic.AddUint64(&sys.TotalRefreshSuccesses, 1)
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select {
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case <-sys.configLoaded:
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default:
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close(sys.configLoaded)
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}
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return nil
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}
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// Init - initializes config system by reading entries from config/iam
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func (sys *IAMSys) Init(ctx context.Context, objAPI ObjectLayer, etcdClient *etcd.Client, iamRefreshInterval time.Duration) {
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iamInitStart := time.Now()
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sys.Lock()
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defer sys.Unlock()
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sys.iamRefreshInterval = iamRefreshInterval
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// Initialize IAM store
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sys.initStore(objAPI, etcdClient)
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retryCtx, cancel := context.WithCancel(ctx)
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// Indicate to our routine to exit cleanly upon return.
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defer cancel()
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// allocate dynamic timeout once before the loop
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iamLockTimeout := newDynamicTimeout(5*time.Second, 3*time.Second)
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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// Migrate storage format if needed.
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for {
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// Hold the lock for migration only.
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txnLk := objAPI.NewNSLock(minioMetaBucket, minioConfigPrefix+"/iam.lock")
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// let one of the server acquire the lock, if not let them timeout.
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// which shall be retried again by this loop.
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lkctx, err := txnLk.GetLock(retryCtx, iamLockTimeout)
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if err != nil {
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logger.Info("Waiting for all MinIO IAM sub-system to be initialized.. trying to acquire lock")
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time.Sleep(time.Duration(r.Float64() * float64(5*time.Second)))
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continue
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}
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if etcdClient != nil {
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// **** WARNING ****
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// Migrating to encrypted backend on etcd should happen before initialization of
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// IAM sub-system, make sure that we do not move the above codeblock elsewhere.
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if err := migrateIAMConfigsEtcdToEncrypted(retryCtx, etcdClient); err != nil {
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txnLk.Unlock(lkctx.Cancel)
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if errors.Is(err, errEtcdUnreachable) {
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logger.Info("Connection to etcd timed out. Retrying..")
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continue
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}
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logger.LogIf(ctx, fmt.Errorf("Unable to decrypt an encrypted ETCD backend for IAM users and policies: %w", err))
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logger.LogIf(ctx, errors.New("IAM sub-system is partially initialized, some users may not be available"))
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return
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}
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}
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// These messages only meant primarily for distributed setup, so only log during distributed setup.
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if globalIsDistErasure {
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logger.Info("Waiting for all MinIO IAM sub-system to be initialized.. lock acquired")
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}
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// Migrate IAM configuration, if necessary.
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if err := sys.doIAMConfigMigration(retryCtx); err != nil {
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txnLk.Unlock(lkctx.Cancel)
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if configRetriableErrors(err) {
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logger.Info("Waiting for all MinIO IAM sub-system to be initialized.. possible cause (%v)", err)
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continue
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}
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logger.LogIf(ctx, fmt.Errorf("Unable to migrate IAM users and policies to new format: %w", err))
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logger.LogIf(ctx, errors.New("IAM sub-system is partially initialized, some users may not be available"))
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return
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}
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// Successfully migrated, proceed to load the users.
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txnLk.Unlock(lkctx.Cancel)
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break
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}
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iamLoadStart := time.Now()
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// Load IAM data from storage.
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for {
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if err := sys.Load(retryCtx); err != nil {
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if configRetriableErrors(err) {
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logger.Info("Waiting for all MinIO IAM sub-system to be initialized.. possible cause (%v)", err)
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time.Sleep(time.Duration(r.Float64() * float64(5*time.Second)))
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continue
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}
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if err != nil {
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logger.LogIf(ctx, fmt.Errorf("Unable to initialize IAM sub-system, some users may not be available %w", err))
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}
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}
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break
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}
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// Set up polling for expired accounts and credentials purging.
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switch {
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case globalOpenIDConfig.ProviderEnabled():
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go func() {
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timer := time.NewTimer(sys.iamRefreshInterval)
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defer timer.Stop()
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for {
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select {
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case <-timer.C:
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sys.purgeExpiredCredentialsForExternalSSO(ctx)
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timer.Reset(sys.iamRefreshInterval)
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case <-ctx.Done():
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return
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}
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}
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}()
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case globalLDAPConfig.Enabled:
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go func() {
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timer := time.NewTimer(sys.iamRefreshInterval)
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defer timer.Stop()
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for {
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select {
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case <-timer.C:
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sys.purgeExpiredCredentialsForLDAP(ctx)
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sys.updateGroupMembershipsForLDAP(ctx)
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timer.Reset(sys.iamRefreshInterval)
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case <-ctx.Done():
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return
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}
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}
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}()
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}
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// Start watching changes to storage.
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go sys.watch(ctx)
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// Load RoleARN
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if rolePolicyMap := globalOpenIDConfig.GetRoleInfo(); rolePolicyMap != nil {
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// Validate that policies associated with roles are defined.
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for _, rolePolicies := range rolePolicyMap {
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ps := newMappedPolicy(rolePolicies).toSlice()
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numPolicies := len(ps)
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validPolicies, _ := sys.store.FilterPolicies(rolePolicies, "")
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numValidPolicies := len(strings.Split(validPolicies, ","))
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if numPolicies != numValidPolicies {
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logger.LogIf(ctx, fmt.Errorf("Some specified role policies (in %s) were not defined - role policies will not be enabled.", rolePolicies))
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return
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}
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}
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sys.rolesMap = rolePolicyMap
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}
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sys.printIAMRoles()
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now := time.Now()
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logger.Info("Finished loading IAM sub-system (took %.1fs of %.1fs to load data).", now.Sub(iamLoadStart).Seconds(), now.Sub(iamInitStart).Seconds())
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}
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// Prints IAM role ARNs.
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func (sys *IAMSys) printIAMRoles() {
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if len(sys.rolesMap) == 0 {
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return
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}
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var arns []string
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for arn := range sys.rolesMap {
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arns = append(arns, arn.String())
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}
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sort.Strings(arns)
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msgs := make([]string, 0, len(arns))
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for _, arn := range arns {
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msgs = append(msgs, color.Bold(arn))
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}
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logger.Info(fmt.Sprintf("%s %s", color.Blue("IAM Roles:"), strings.Join(msgs, " ")))
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}
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// HasWatcher - returns if the IAM system has a watcher to be notified of
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// changes.
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func (sys *IAMSys) HasWatcher() bool {
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return sys.store.HasWatcher()
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}
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func (sys *IAMSys) watch(ctx context.Context) {
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watcher, ok := sys.store.IAMStorageAPI.(iamStorageWatcher)
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if ok {
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ch := watcher.watch(ctx, iamConfigPrefix)
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for event := range ch {
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if err := sys.loadWatchedEvent(ctx, event); err != nil {
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// we simply log errors
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logger.LogIf(ctx, fmt.Errorf("Failure in loading watch event: %v", err))
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}
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}
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return
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}
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var maxRefreshDurationSecondsForLog float64 = 10
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// Load all items periodically
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timer := time.NewTimer(sys.iamRefreshInterval)
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defer timer.Stop()
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for {
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select {
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case <-timer.C:
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refreshStart := time.Now()
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if err := sys.Load(ctx); err != nil {
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logger.LogIf(ctx, fmt.Errorf("Failure in periodic refresh for IAM (took %.2fs): %v", time.Since(refreshStart).Seconds(), err))
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} else {
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took := time.Since(refreshStart).Seconds()
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if took > maxRefreshDurationSecondsForLog {
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// Log if we took a lot of time to load.
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logger.Info("IAM refresh took %.2fs", took)
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}
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}
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timer.Reset(sys.iamRefreshInterval)
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case <-ctx.Done():
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return
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}
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}
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}
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func (sys *IAMSys) loadWatchedEvent(ctx context.Context, event iamWatchEvent) (err error) {
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usersPrefix := strings.HasPrefix(event.keyPath, iamConfigUsersPrefix)
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groupsPrefix := strings.HasPrefix(event.keyPath, iamConfigGroupsPrefix)
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stsPrefix := strings.HasPrefix(event.keyPath, iamConfigSTSPrefix)
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svcPrefix := strings.HasPrefix(event.keyPath, iamConfigServiceAccountsPrefix)
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policyPrefix := strings.HasPrefix(event.keyPath, iamConfigPoliciesPrefix)
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policyDBUsersPrefix := strings.HasPrefix(event.keyPath, iamConfigPolicyDBUsersPrefix)
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policyDBSTSUsersPrefix := strings.HasPrefix(event.keyPath, iamConfigPolicyDBSTSUsersPrefix)
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policyDBGroupsPrefix := strings.HasPrefix(event.keyPath, iamConfigPolicyDBGroupsPrefix)
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ctx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
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defer cancel()
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switch {
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case usersPrefix:
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accessKey := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigUsersPrefix))
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err = sys.store.UserNotificationHandler(ctx, accessKey, regUser)
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case stsPrefix:
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accessKey := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigSTSPrefix))
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err = sys.store.UserNotificationHandler(ctx, accessKey, stsUser)
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case svcPrefix:
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accessKey := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigServiceAccountsPrefix))
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err = sys.store.UserNotificationHandler(ctx, accessKey, svcUser)
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case groupsPrefix:
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group := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigGroupsPrefix))
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err = sys.store.GroupNotificationHandler(ctx, group)
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case policyPrefix:
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policyName := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigPoliciesPrefix))
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err = sys.store.PolicyNotificationHandler(ctx, policyName)
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case policyDBUsersPrefix:
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policyMapFile := strings.TrimPrefix(event.keyPath, iamConfigPolicyDBUsersPrefix)
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user := strings.TrimSuffix(policyMapFile, ".json")
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err = sys.store.PolicyMappingNotificationHandler(ctx, user, false, regUser)
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case policyDBSTSUsersPrefix:
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policyMapFile := strings.TrimPrefix(event.keyPath, iamConfigPolicyDBSTSUsersPrefix)
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user := strings.TrimSuffix(policyMapFile, ".json")
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err = sys.store.PolicyMappingNotificationHandler(ctx, user, false, stsUser)
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case policyDBGroupsPrefix:
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policyMapFile := strings.TrimPrefix(event.keyPath, iamConfigPolicyDBGroupsPrefix)
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user := strings.TrimSuffix(policyMapFile, ".json")
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err = sys.store.PolicyMappingNotificationHandler(ctx, user, true, regUser)
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}
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return err
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}
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// HasRolePolicy - returns if a role policy is configured for IAM.
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func (sys *IAMSys) HasRolePolicy() bool {
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return len(sys.rolesMap) > 0
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}
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|
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// GetRolePolicy - returns policies associated with a role ARN.
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func (sys *IAMSys) GetRolePolicy(arnStr string) (arn.ARN, string, error) {
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roleArn, err := arn.Parse(arnStr)
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if err != nil {
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return arn.ARN{}, "", fmt.Errorf("RoleARN parse err: %v", err)
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}
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rolePolicy, ok := sys.rolesMap[roleArn]
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if !ok {
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return arn.ARN{}, "", fmt.Errorf("RoleARN %s is not defined.", arnStr)
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}
|
|
return roleArn, rolePolicy, nil
|
|
}
|
|
|
|
// DeletePolicy - deletes a canned policy from backend or etcd.
|
|
func (sys *IAMSys) DeletePolicy(ctx context.Context, policyName string, notifyPeers bool) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
err := sys.store.DeletePolicy(ctx, policyName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !notifyPeers || sys.HasWatcher() {
|
|
return nil
|
|
}
|
|
|
|
// Notify all other MinIO peers to delete policy
|
|
for _, nerr := range globalNotificationSys.DeletePolicy(policyName) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// InfoPolicy - returns the policy definition with some metadata.
|
|
func (sys *IAMSys) InfoPolicy(policyName string) (*madmin.PolicyInfo, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
d, err := sys.store.GetPolicyDoc(policyName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
pdata, err := json.Marshal(d.Policy)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &madmin.PolicyInfo{
|
|
PolicyName: policyName,
|
|
Policy: pdata,
|
|
CreateDate: d.CreateDate,
|
|
UpdateDate: d.UpdateDate,
|
|
}, nil
|
|
}
|
|
|
|
// ListPolicies - lists all canned policies.
|
|
func (sys *IAMSys) ListPolicies(ctx context.Context, bucketName string) (map[string]iampolicy.Policy, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.ListPolicies(ctx, bucketName)
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// ListPolicyDocs - lists all canned policy docs.
|
|
func (sys *IAMSys) ListPolicyDocs(ctx context.Context, bucketName string) (map[string]PolicyDoc, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.ListPolicyDocs(ctx, bucketName)
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// SetPolicy - sets a new named policy.
|
|
func (sys *IAMSys) SetPolicy(ctx context.Context, policyName string, p iampolicy.Policy) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
err := sys.store.SetPolicy(ctx, policyName, p)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !sys.HasWatcher() {
|
|
// Notify all other MinIO peers to reload policy
|
|
for _, nerr := range globalNotificationSys.LoadPolicy(policyName) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// DeleteUser - delete user (only for long-term users not STS users).
|
|
func (sys *IAMSys) DeleteUser(ctx context.Context, accessKey string, notifyPeers bool) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if err := sys.store.DeleteUser(ctx, accessKey, regUser); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Notify all other MinIO peers to delete user.
|
|
if notifyPeers && !sys.HasWatcher() {
|
|
for _, nerr := range globalNotificationSys.DeleteUser(accessKey) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// CurrentPolicies - returns comma separated policy string, from
|
|
// an input policy after validating if there are any current
|
|
// policies which exist on MinIO corresponding to the input.
|
|
func (sys *IAMSys) CurrentPolicies(policyName string) string {
|
|
if !sys.Initialized() {
|
|
return ""
|
|
}
|
|
|
|
policies, _ := sys.store.FilterPolicies(policyName, "")
|
|
return policies
|
|
}
|
|
|
|
func (sys *IAMSys) notifyForUser(ctx context.Context, accessKey string, isTemp bool) {
|
|
// Notify all other MinIO peers to reload user.
|
|
if !sys.HasWatcher() {
|
|
for _, nerr := range globalNotificationSys.LoadUser(accessKey, isTemp) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// SetTempUser - set temporary user credentials, these credentials have an
|
|
// expiry. The permissions for these STS credentials is determined in one of the
|
|
// following ways:
|
|
//
|
|
// - RoleARN - if a role-arn is specified in the request, the STS credential's
|
|
// policy is the role's policy.
|
|
//
|
|
// - inherited from parent - this is the case for AssumeRole API, where the
|
|
// parent user is an actual real user with their own (permanent) credentials and
|
|
// policy association.
|
|
//
|
|
// - inherited from "virtual" parent - this is the case for AssumeRoleWithLDAP
|
|
// where the parent user is the DN of the actual LDAP user. The parent user
|
|
// itself cannot login, but the policy associated with them determines the base
|
|
// policy for the STS credential. The policy mapping can be updated by the
|
|
// administrator.
|
|
//
|
|
// - from `Subject.CommonName` field from the STS request for
|
|
// AssumeRoleWithCertificate. In this case, the policy for the STS credential
|
|
// has the same name as the value of this field.
|
|
//
|
|
// - from special JWT claim from STS request for AssumeRoleWithOIDC API (when
|
|
// not using RoleARN). The claim value can be a string or a list and refers to
|
|
// the names of access policies.
|
|
//
|
|
// For all except the RoleARN case, the implementation is the same - the policy
|
|
// for the STS credential is associated with a parent user. For the
|
|
// AssumeRoleWithCertificate case, the "virtual" parent user is the value of the
|
|
// `Subject.CommonName` field. For the OIDC (without RoleARN) case the "virtual"
|
|
// parent is derived as a concatenation of the `sub` and `iss` fields. The
|
|
// policies applicable to the STS credential are associated with this "virtual"
|
|
// parent.
|
|
//
|
|
// When a policyName is given to this function, the policy association is
|
|
// created and stored in the IAM store. Thus, it should NOT be given for the
|
|
// role-arn case (because the role-to-policy mapping is separately stored
|
|
// elsewhere), the AssumeRole case (because the parent user is real and their
|
|
// policy is associated via policy-set API) and the AssumeRoleWithLDAP case
|
|
// (because the policy association is made via policy-set API).
|
|
func (sys *IAMSys) SetTempUser(ctx context.Context, accessKey string, cred auth.Credentials, policyName string) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if globalAuthZPlugin != nil {
|
|
// If OPA is set, we do not need to set a policy mapping.
|
|
policyName = ""
|
|
}
|
|
|
|
err := sys.store.SetTempUser(ctx, accessKey, cred, policyName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForUser(ctx, cred.AccessKey, true)
|
|
|
|
return nil
|
|
}
|
|
|
|
// ListBucketUsers - list all users who can access this 'bucket'
|
|
func (sys *IAMSys) ListBucketUsers(ctx context.Context, bucket string) (map[string]madmin.UserInfo, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.GetBucketUsers(bucket)
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// ListUsers - list all users.
|
|
func (sys *IAMSys) ListUsers(ctx context.Context) (map[string]madmin.UserInfo, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.GetUsers(), nil
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// ListLDAPUsers - list LDAP users which has
|
|
func (sys *IAMSys) ListLDAPUsers() (map[string]madmin.UserInfo, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != LDAPUsersSysType {
|
|
return nil, errIAMActionNotAllowed
|
|
}
|
|
|
|
<-sys.configLoaded
|
|
|
|
ldapUsers := make(map[string]madmin.UserInfo)
|
|
for user, policy := range sys.store.GetUsersWithMappedPolicies() {
|
|
ldapUsers[user] = madmin.UserInfo{
|
|
PolicyName: policy,
|
|
Status: madmin.AccountEnabled,
|
|
}
|
|
}
|
|
return ldapUsers, nil
|
|
}
|
|
|
|
// IsTempUser - returns if given key is a temporary user.
|
|
func (sys *IAMSys) IsTempUser(name string) (bool, string, error) {
|
|
if !sys.Initialized() {
|
|
return false, "", errServerNotInitialized
|
|
}
|
|
|
|
cred, found := sys.store.GetUser(name)
|
|
if !found {
|
|
return false, "", errNoSuchUser
|
|
}
|
|
|
|
if cred.IsTemp() {
|
|
return true, cred.ParentUser, nil
|
|
}
|
|
|
|
return false, "", nil
|
|
}
|
|
|
|
// IsServiceAccount - returns if given key is a service account
|
|
func (sys *IAMSys) IsServiceAccount(name string) (bool, string, error) {
|
|
if !sys.Initialized() {
|
|
return false, "", errServerNotInitialized
|
|
}
|
|
|
|
cred, found := sys.store.GetUser(name)
|
|
if !found {
|
|
return false, "", errNoSuchUser
|
|
}
|
|
|
|
if cred.IsServiceAccount() {
|
|
return true, cred.ParentUser, nil
|
|
}
|
|
|
|
return false, "", nil
|
|
}
|
|
|
|
// GetUserInfo - get info on a user.
|
|
func (sys *IAMSys) GetUserInfo(ctx context.Context, name string) (u madmin.UserInfo, err error) {
|
|
if !sys.Initialized() {
|
|
return u, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
default:
|
|
sys.store.LoadUser(ctx, name)
|
|
}
|
|
|
|
return sys.store.GetUserInfo(name)
|
|
}
|
|
|
|
// SetUserStatus - sets current user status, supports disabled or enabled.
|
|
func (sys *IAMSys) SetUserStatus(ctx context.Context, accessKey string, status madmin.AccountStatus) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
err := sys.store.SetUserStatus(ctx, accessKey, status)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForUser(ctx, accessKey, false)
|
|
return nil
|
|
}
|
|
|
|
func (sys *IAMSys) notifyForServiceAccount(ctx context.Context, accessKey string) {
|
|
// Notify all other Minio peers to reload the service account
|
|
if !sys.HasWatcher() {
|
|
for _, nerr := range globalNotificationSys.LoadServiceAccount(accessKey) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type newServiceAccountOpts struct {
|
|
sessionPolicy *iampolicy.Policy
|
|
accessKey string
|
|
secretKey string
|
|
|
|
claims map[string]interface{}
|
|
}
|
|
|
|
// NewServiceAccount - create a new service account
|
|
func (sys *IAMSys) NewServiceAccount(ctx context.Context, parentUser string, groups []string, opts newServiceAccountOpts) (auth.Credentials, error) {
|
|
if !sys.Initialized() {
|
|
return auth.Credentials{}, errServerNotInitialized
|
|
}
|
|
|
|
if parentUser == "" {
|
|
return auth.Credentials{}, errInvalidArgument
|
|
}
|
|
|
|
var policyBuf []byte
|
|
if opts.sessionPolicy != nil {
|
|
err := opts.sessionPolicy.Validate()
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
policyBuf, err = json.Marshal(opts.sessionPolicy)
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
if len(policyBuf) > 16*humanize.KiByte {
|
|
return auth.Credentials{}, fmt.Errorf("Session policy should not exceed 16 KiB characters")
|
|
}
|
|
}
|
|
|
|
// found newly requested service account, to be same as
|
|
// parentUser, reject such operations.
|
|
if parentUser == opts.accessKey {
|
|
return auth.Credentials{}, errIAMActionNotAllowed
|
|
}
|
|
|
|
m := make(map[string]interface{})
|
|
m[parentClaim] = parentUser
|
|
|
|
if len(policyBuf) > 0 {
|
|
m[iampolicy.SessionPolicyName] = base64.StdEncoding.EncodeToString(policyBuf)
|
|
m[iamPolicyClaimNameSA()] = embeddedPolicyType
|
|
} else {
|
|
m[iamPolicyClaimNameSA()] = inheritedPolicyType
|
|
}
|
|
|
|
// Add all the necessary claims for the service accounts.
|
|
for k, v := range opts.claims {
|
|
_, ok := m[k]
|
|
if !ok {
|
|
m[k] = v
|
|
}
|
|
}
|
|
|
|
var accessKey, secretKey string
|
|
var err error
|
|
if len(opts.accessKey) > 0 {
|
|
accessKey, secretKey = opts.accessKey, opts.secretKey
|
|
} else {
|
|
accessKey, secretKey, err = auth.GenerateCredentials()
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
}
|
|
cred, err := auth.CreateNewCredentialsWithMetadata(accessKey, secretKey, m, secretKey)
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
cred.ParentUser = parentUser
|
|
cred.Groups = groups
|
|
cred.Status = string(auth.AccountOn)
|
|
|
|
err = sys.store.AddServiceAccount(ctx, cred)
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
|
|
sys.notifyForServiceAccount(ctx, cred.AccessKey)
|
|
return cred, nil
|
|
}
|
|
|
|
type updateServiceAccountOpts struct {
|
|
sessionPolicy *iampolicy.Policy
|
|
secretKey string
|
|
status string
|
|
}
|
|
|
|
// UpdateServiceAccount - edit a service account
|
|
func (sys *IAMSys) UpdateServiceAccount(ctx context.Context, accessKey string, opts updateServiceAccountOpts) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
err := sys.store.UpdateServiceAccount(ctx, accessKey, opts)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForServiceAccount(ctx, accessKey)
|
|
return nil
|
|
}
|
|
|
|
// ListServiceAccounts - lists all services accounts associated to a specific user
|
|
func (sys *IAMSys) ListServiceAccounts(ctx context.Context, accessKey string) ([]auth.Credentials, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.ListServiceAccounts(ctx, accessKey)
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// ListTempAccounts - lists all services accounts associated to a specific user
|
|
func (sys *IAMSys) ListTempAccounts(ctx context.Context, accessKey string) ([]auth.Credentials, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.ListTempAccounts(ctx, accessKey)
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// GetServiceAccount - wrapper method to get information about a service account
|
|
func (sys *IAMSys) GetServiceAccount(ctx context.Context, accessKey string) (auth.Credentials, *iampolicy.Policy, error) {
|
|
sa, embeddedPolicy, err := sys.getServiceAccount(ctx, accessKey)
|
|
if err != nil {
|
|
return sa, embeddedPolicy, err
|
|
}
|
|
// Hide secret & session keys
|
|
sa.SecretKey = ""
|
|
sa.SessionToken = ""
|
|
return sa, embeddedPolicy, nil
|
|
}
|
|
|
|
// getServiceAccount - gets information about a service account
|
|
func (sys *IAMSys) getServiceAccount(ctx context.Context, accessKey string) (auth.Credentials, *iampolicy.Policy, error) {
|
|
if !sys.Initialized() {
|
|
return auth.Credentials{}, nil, errServerNotInitialized
|
|
}
|
|
|
|
sa, ok := sys.store.GetUser(accessKey)
|
|
if !ok || !sa.IsServiceAccount() {
|
|
return auth.Credentials{}, nil, errNoSuchServiceAccount
|
|
}
|
|
|
|
var embeddedPolicy *iampolicy.Policy
|
|
|
|
jwtClaims, err := auth.ExtractClaims(sa.SessionToken, sa.SecretKey)
|
|
if err != nil {
|
|
jwtClaims, err = auth.ExtractClaims(sa.SessionToken, globalActiveCred.SecretKey)
|
|
if err != nil {
|
|
return auth.Credentials{}, nil, err
|
|
}
|
|
}
|
|
pt, ptok := jwtClaims.Lookup(iamPolicyClaimNameSA())
|
|
sp, spok := jwtClaims.Lookup(iampolicy.SessionPolicyName)
|
|
if ptok && spok && pt == embeddedPolicyType {
|
|
policyBytes, err := base64.StdEncoding.DecodeString(sp)
|
|
if err != nil {
|
|
return auth.Credentials{}, nil, err
|
|
}
|
|
embeddedPolicy, err = iampolicy.ParseConfig(bytes.NewReader(policyBytes))
|
|
if err != nil {
|
|
return auth.Credentials{}, nil, err
|
|
}
|
|
}
|
|
|
|
return sa, embeddedPolicy, nil
|
|
}
|
|
|
|
// GetClaimsForSvcAcc - gets the claims associated with the service account.
|
|
func (sys *IAMSys) GetClaimsForSvcAcc(ctx context.Context, accessKey string) (map[string]interface{}, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != LDAPUsersSysType {
|
|
return nil, nil
|
|
}
|
|
|
|
sa, ok := sys.store.GetUser(accessKey)
|
|
if !ok || !sa.IsServiceAccount() {
|
|
return nil, errNoSuchServiceAccount
|
|
}
|
|
|
|
jwtClaims, err := auth.ExtractClaims(sa.SessionToken, sa.SecretKey)
|
|
if err != nil {
|
|
jwtClaims, err = auth.ExtractClaims(sa.SessionToken, globalActiveCred.SecretKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return jwtClaims.Map(), nil
|
|
}
|
|
|
|
// DeleteServiceAccount - delete a service account
|
|
func (sys *IAMSys) DeleteServiceAccount(ctx context.Context, accessKey string, notifyPeers bool) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
sa, ok := sys.store.GetUser(accessKey)
|
|
if !ok || !sa.IsServiceAccount() {
|
|
return nil
|
|
}
|
|
|
|
if err := sys.store.DeleteUser(ctx, accessKey, svcUser); err != nil {
|
|
return err
|
|
}
|
|
|
|
if notifyPeers && !sys.HasWatcher() {
|
|
for _, nerr := range globalNotificationSys.DeleteServiceAccount(accessKey) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// CreateUser - create new user credentials and policy, if user already exists
|
|
// they shall be rewritten with new inputs.
|
|
func (sys *IAMSys) CreateUser(ctx context.Context, accessKey string, ureq madmin.AddOrUpdateUserReq) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
if !auth.IsAccessKeyValid(accessKey) {
|
|
return auth.ErrInvalidAccessKeyLength
|
|
}
|
|
|
|
if !auth.IsSecretKeyValid(ureq.SecretKey) {
|
|
return auth.ErrInvalidSecretKeyLength
|
|
}
|
|
|
|
err := sys.store.AddUser(ctx, accessKey, ureq)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForUser(ctx, accessKey, false)
|
|
return nil
|
|
}
|
|
|
|
// SetUserSecretKey - sets user secret key
|
|
func (sys *IAMSys) SetUserSecretKey(ctx context.Context, accessKey string, secretKey string) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
if !auth.IsAccessKeyValid(accessKey) {
|
|
return auth.ErrInvalidAccessKeyLength
|
|
}
|
|
|
|
if !auth.IsSecretKeyValid(secretKey) {
|
|
return auth.ErrInvalidSecretKeyLength
|
|
}
|
|
|
|
return sys.store.UpdateUserSecretKey(ctx, accessKey, secretKey)
|
|
}
|
|
|
|
// purgeExpiredCredentialsForExternalSSO - validates if local credentials are still valid
|
|
// by checking remote IDP if the relevant users are still active and present.
|
|
func (sys *IAMSys) purgeExpiredCredentialsForExternalSSO(ctx context.Context) {
|
|
parentUsersMap := sys.store.GetAllParentUsers()
|
|
var expiredUsers []string
|
|
for parentUser, puInfo := range parentUsersMap {
|
|
// There are multiple role ARNs for parent user only when there
|
|
// are multiple openid provider configurations with the same ID
|
|
// provider. We lookup the provider associated with some one of
|
|
// the roleARNs to check if the user still exists. If they don't
|
|
// we can safely remove credentials for this parent user
|
|
// associated with any of the provider configurations.
|
|
//
|
|
// If there is no roleARN mapped to the user, the user may be
|
|
// coming from a policy claim based openid provider.
|
|
roleArns := puInfo.roleArns.ToSlice()
|
|
var roleArn string
|
|
if len(roleArns) == 0 {
|
|
logger.LogIf(GlobalContext,
|
|
fmt.Errorf("parentUser: %s had no roleArns mapped!", parentUser))
|
|
continue
|
|
}
|
|
roleArn = roleArns[0]
|
|
u, err := globalOpenIDConfig.LookupUser(roleArn, puInfo.subClaimValue)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, err)
|
|
continue
|
|
}
|
|
// If user is set to "disabled", we will remove them
|
|
// subsequently.
|
|
if !u.Enabled {
|
|
expiredUsers = append(expiredUsers, parentUser)
|
|
}
|
|
}
|
|
|
|
// We ignore any errors
|
|
_ = sys.store.DeleteUsers(ctx, expiredUsers)
|
|
}
|
|
|
|
// purgeExpiredCredentialsForLDAP - validates if local credentials are still
|
|
// valid by checking LDAP server if the relevant users are still present.
|
|
func (sys *IAMSys) purgeExpiredCredentialsForLDAP(ctx context.Context) {
|
|
parentUsers := sys.store.GetAllParentUsers()
|
|
var allDistNames []string
|
|
for parentUser := range parentUsers {
|
|
if !globalLDAPConfig.IsLDAPUserDN(parentUser) {
|
|
continue
|
|
}
|
|
|
|
allDistNames = append(allDistNames, parentUser)
|
|
}
|
|
|
|
expiredUsers, err := globalLDAPConfig.GetNonEligibleUserDistNames(allDistNames)
|
|
if err != nil {
|
|
// Log and return on error - perhaps it'll work the next time.
|
|
logger.LogIf(GlobalContext, err)
|
|
return
|
|
}
|
|
|
|
// We ignore any errors
|
|
_ = sys.store.DeleteUsers(ctx, expiredUsers)
|
|
}
|
|
|
|
// updateGroupMembershipsForLDAP - updates the list of groups associated with the credential.
|
|
func (sys *IAMSys) updateGroupMembershipsForLDAP(ctx context.Context) {
|
|
// 1. Collect all LDAP users with active creds.
|
|
allCreds := sys.store.GetSTSAndServiceAccounts()
|
|
// List of unique LDAP (parent) user DNs that have active creds
|
|
var parentUsers []string
|
|
// Map of LDAP user to list of active credential objects
|
|
parentUserToCredsMap := make(map[string][]auth.Credentials)
|
|
// DN to ldap username mapping for each LDAP user
|
|
parentUserToLDAPUsernameMap := make(map[string]string)
|
|
for _, cred := range allCreds {
|
|
if !globalLDAPConfig.IsLDAPUserDN(cred.ParentUser) {
|
|
continue
|
|
}
|
|
// Check if this is the first time we are
|
|
// encountering this LDAP user.
|
|
if _, ok := parentUserToCredsMap[cred.ParentUser]; !ok {
|
|
// Try to find the ldapUsername for this
|
|
// parentUser by extracting JWT claims
|
|
var (
|
|
jwtClaims *jwt.MapClaims
|
|
err error
|
|
)
|
|
|
|
if cred.SessionToken == "" {
|
|
continue
|
|
}
|
|
|
|
if cred.IsServiceAccount() {
|
|
jwtClaims, err = auth.ExtractClaims(cred.SessionToken, cred.SecretKey)
|
|
if err != nil {
|
|
jwtClaims, err = auth.ExtractClaims(cred.SessionToken, globalActiveCred.SecretKey)
|
|
}
|
|
} else {
|
|
jwtClaims, err = auth.ExtractClaims(cred.SessionToken, globalActiveCred.SecretKey)
|
|
}
|
|
if err != nil {
|
|
// skip this cred - session token seems invalid
|
|
continue
|
|
}
|
|
|
|
ldapUsername, ok := jwtClaims.Lookup(ldapUserN)
|
|
if !ok {
|
|
// skip this cred - we dont have the
|
|
// username info needed
|
|
continue
|
|
}
|
|
|
|
// Collect each new cred.ParentUser into parentUsers
|
|
parentUsers = append(parentUsers, cred.ParentUser)
|
|
|
|
// Update the ldapUsernameMap
|
|
parentUserToLDAPUsernameMap[cred.ParentUser] = ldapUsername
|
|
}
|
|
parentUserToCredsMap[cred.ParentUser] = append(parentUserToCredsMap[cred.ParentUser], cred)
|
|
|
|
}
|
|
|
|
// 2. Query LDAP server for groups of the LDAP users collected.
|
|
updatedGroups, err := globalLDAPConfig.LookupGroupMemberships(parentUsers, parentUserToLDAPUsernameMap)
|
|
if err != nil {
|
|
// Log and return on error - perhaps it'll work the next time.
|
|
logger.LogIf(GlobalContext, err)
|
|
return
|
|
}
|
|
|
|
// 3. Update creds for those users whose groups are changed
|
|
for _, parentUser := range parentUsers {
|
|
currGroupsSet := updatedGroups[parentUser]
|
|
currGroups := currGroupsSet.ToSlice()
|
|
for _, cred := range parentUserToCredsMap[parentUser] {
|
|
gSet := set.CreateStringSet(cred.Groups...)
|
|
if gSet.Equals(currGroupsSet) {
|
|
// No change to groups memberships for this
|
|
// credential.
|
|
continue
|
|
}
|
|
|
|
cred.Groups = currGroups
|
|
if err := sys.store.UpdateUserIdentity(ctx, cred); err != nil {
|
|
// Log and continue error - perhaps it'll work the next time.
|
|
logger.LogIf(GlobalContext, err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// GetUser - get user credentials
|
|
func (sys *IAMSys) GetUser(ctx context.Context, accessKey string) (cred auth.Credentials, ok bool) {
|
|
if !sys.Initialized() {
|
|
return cred, false
|
|
}
|
|
|
|
fallback := false
|
|
select {
|
|
case <-sys.configLoaded:
|
|
default:
|
|
sys.store.LoadUser(ctx, accessKey)
|
|
fallback = true
|
|
}
|
|
|
|
cred, ok = sys.store.GetUser(accessKey)
|
|
if !ok && !fallback {
|
|
// accessKey not found, also
|
|
// IAM store is not in fallback mode
|
|
// we can try to reload again from
|
|
// the IAM store and see if credential
|
|
// exists now. If it doesn't proceed to
|
|
// fail.
|
|
sys.store.LoadUser(ctx, accessKey)
|
|
cred, ok = sys.store.GetUser(accessKey)
|
|
}
|
|
|
|
return cred, ok && cred.IsValid()
|
|
}
|
|
|
|
// Notify all other MinIO peers to load group.
|
|
func (sys *IAMSys) notifyForGroup(ctx context.Context, group string) {
|
|
if !sys.HasWatcher() {
|
|
for _, nerr := range globalNotificationSys.LoadGroup(group) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// AddUsersToGroup - adds users to a group, creating the group if
|
|
// needed. No error if user(s) already are in the group.
|
|
func (sys *IAMSys) AddUsersToGroup(ctx context.Context, group string, members []string) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
err := sys.store.AddUsersToGroup(ctx, group, members)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForGroup(ctx, group)
|
|
return nil
|
|
}
|
|
|
|
// RemoveUsersFromGroup - remove users from group. If no users are
|
|
// given, and the group is empty, deletes the group as well.
|
|
func (sys *IAMSys) RemoveUsersFromGroup(ctx context.Context, group string, members []string) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
err := sys.store.RemoveUsersFromGroup(ctx, group, members)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForGroup(ctx, group)
|
|
return nil
|
|
}
|
|
|
|
// SetGroupStatus - enable/disabled a group
|
|
func (sys *IAMSys) SetGroupStatus(ctx context.Context, group string, enabled bool) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
err := sys.store.SetGroupStatus(ctx, group, enabled)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.notifyForGroup(ctx, group)
|
|
return nil
|
|
}
|
|
|
|
// GetGroupDescription - builds up group description
|
|
func (sys *IAMSys) GetGroupDescription(group string) (gd madmin.GroupDesc, err error) {
|
|
if !sys.Initialized() {
|
|
return gd, errServerNotInitialized
|
|
}
|
|
|
|
return sys.store.GetGroupDescription(group)
|
|
}
|
|
|
|
// ListGroups - lists groups.
|
|
func (sys *IAMSys) ListGroups(ctx context.Context) (r []string, err error) {
|
|
if !sys.Initialized() {
|
|
return r, errServerNotInitialized
|
|
}
|
|
|
|
select {
|
|
case <-sys.configLoaded:
|
|
return sys.store.ListGroups(ctx)
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
|
|
// PolicyDBSet - sets a policy for a user or group in the PolicyDB.
|
|
func (sys *IAMSys) PolicyDBSet(ctx context.Context, name, policy string, isGroup bool) error {
|
|
if !sys.Initialized() {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
// Determine user-type based on IDP mode.
|
|
userType := regUser
|
|
if sys.usersSysType == LDAPUsersSysType {
|
|
userType = stsUser
|
|
}
|
|
|
|
err := sys.store.PolicyDBSet(ctx, name, policy, userType, isGroup)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Notify all other MinIO peers to reload policy
|
|
if !sys.HasWatcher() {
|
|
for _, nerr := range globalNotificationSys.LoadPolicyMapping(name, isGroup) {
|
|
if nerr.Err != nil {
|
|
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
|
|
logger.LogIf(ctx, nerr.Err)
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// PolicyDBGet - gets policy set on a user or group. If a list of groups is
|
|
// given, policies associated with them are included as well.
|
|
func (sys *IAMSys) PolicyDBGet(name string, isGroup bool, groups ...string) ([]string, error) {
|
|
if !sys.Initialized() {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
return sys.store.PolicyDBGet(name, isGroup, groups...)
|
|
}
|
|
|
|
const sessionPolicyNameExtracted = iampolicy.SessionPolicyName + "-extracted"
|
|
|
|
// IsAllowedServiceAccount - checks if the given service account is allowed to perform
|
|
// actions. The permission of the parent user is checked first
|
|
func (sys *IAMSys) IsAllowedServiceAccount(args iampolicy.Args, parentUser string) bool {
|
|
// Now check if we have a subject claim
|
|
p, ok := args.Claims[parentClaim]
|
|
if ok {
|
|
parentInClaim, ok := p.(string)
|
|
if !ok {
|
|
// Reject malformed/malicious requests.
|
|
return false
|
|
}
|
|
// The parent claim in the session token should be equal
|
|
// to the parent detected in the backend
|
|
if parentInClaim != parentUser {
|
|
return false
|
|
}
|
|
} else {
|
|
// This is needed so a malicious user cannot
|
|
// use a leaked session key of another user
|
|
// to widen its privileges.
|
|
return false
|
|
}
|
|
|
|
// Check policy for parent user of service account.
|
|
svcPolicies, err := sys.PolicyDBGet(parentUser, false, args.Groups...)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, err)
|
|
return false
|
|
}
|
|
|
|
if len(svcPolicies) == 0 {
|
|
// If parent user has no policies, check for OpenID
|
|
// claims/RoleARN in case it exists.
|
|
roleArn := args.GetRoleArn()
|
|
if roleArn != "" {
|
|
arn, err := arn.Parse(roleArn)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, fmt.Errorf("error parsing role ARN %s: %v", roleArn, err))
|
|
return false
|
|
}
|
|
svcPolicies = newMappedPolicy(sys.rolesMap[arn]).toSlice()
|
|
} else {
|
|
// If there is no roleArn claim, check the OpenID
|
|
// provider's policy claim.
|
|
policySet, _ := iampolicy.GetPoliciesFromClaims(args.Claims, iamPolicyClaimNameOpenID())
|
|
svcPolicies = policySet.ToSlice()
|
|
}
|
|
if len(svcPolicies) == 0 {
|
|
return false
|
|
}
|
|
}
|
|
|
|
// Policies were found, evaluate all of them.
|
|
availablePoliciesStr, combinedPolicy := sys.store.FilterPolicies(strings.Join(svcPolicies, ","), "")
|
|
if availablePoliciesStr == "" {
|
|
return false
|
|
}
|
|
|
|
parentArgs := args
|
|
parentArgs.AccountName = parentUser
|
|
// These are dynamic values set them appropriately.
|
|
parentArgs.ConditionValues["username"] = []string{parentUser}
|
|
parentArgs.ConditionValues["userid"] = []string{parentUser}
|
|
|
|
saPolicyClaim, ok := args.Claims[iamPolicyClaimNameSA()]
|
|
if !ok {
|
|
return false
|
|
}
|
|
|
|
saPolicyClaimStr, ok := saPolicyClaim.(string)
|
|
if !ok {
|
|
// Sub policy if set, should be a string reject
|
|
// malformed/malicious requests.
|
|
return false
|
|
}
|
|
|
|
if saPolicyClaimStr == inheritedPolicyType {
|
|
return combinedPolicy.IsAllowed(parentArgs)
|
|
}
|
|
|
|
// Now check if we have a sessionPolicy.
|
|
spolicy, ok := args.Claims[sessionPolicyNameExtracted]
|
|
if !ok {
|
|
return false
|
|
}
|
|
|
|
spolicyStr, ok := spolicy.(string)
|
|
if !ok {
|
|
// Sub policy if set, should be a string reject
|
|
// malformed/malicious requests.
|
|
return false
|
|
}
|
|
|
|
// Check if policy is parseable.
|
|
subPolicy, err := iampolicy.ParseConfig(bytes.NewReader([]byte(spolicyStr)))
|
|
if err != nil {
|
|
// Log any error in input session policy config.
|
|
logger.LogIf(GlobalContext, err)
|
|
return false
|
|
}
|
|
|
|
// This can only happen if policy was set but with an empty JSON.
|
|
if subPolicy.Version == "" && len(subPolicy.Statements) == 0 {
|
|
return combinedPolicy.IsAllowed(parentArgs)
|
|
}
|
|
|
|
if subPolicy.Version == "" {
|
|
return false
|
|
}
|
|
|
|
return combinedPolicy.IsAllowed(parentArgs) && subPolicy.IsAllowed(parentArgs)
|
|
}
|
|
|
|
// IsAllowedLDAPSTS - checks for LDAP specific claims and values
|
|
func (sys *IAMSys) IsAllowedLDAPSTS(args iampolicy.Args, parentUser string) bool {
|
|
// parentUser value must match the ldap user in the claim.
|
|
if parentInClaimIface, ok := args.Claims[ldapUser]; !ok {
|
|
// no ldapUser claim present reject it.
|
|
return false
|
|
} else if parentInClaim, ok := parentInClaimIface.(string); !ok {
|
|
// not the right type, reject it.
|
|
return false
|
|
} else if parentInClaim != parentUser {
|
|
// ldap claim has been modified maliciously reject it.
|
|
return false
|
|
}
|
|
|
|
// Check policy for this LDAP user.
|
|
ldapPolicies, err := sys.PolicyDBGet(parentUser, false, args.Groups...)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
if len(ldapPolicies) == 0 {
|
|
return false
|
|
}
|
|
|
|
// Policies were found, evaluate all of them.
|
|
availablePoliciesStr, combinedPolicy := sys.store.FilterPolicies(strings.Join(ldapPolicies, ","), "")
|
|
if availablePoliciesStr == "" {
|
|
return false
|
|
}
|
|
|
|
hasSessionPolicy, isAllowedSP := isAllowedBySessionPolicy(args)
|
|
if hasSessionPolicy {
|
|
return isAllowedSP && combinedPolicy.IsAllowed(args)
|
|
}
|
|
|
|
return combinedPolicy.IsAllowed(args)
|
|
}
|
|
|
|
// IsAllowedSTS is meant for STS based temporary credentials,
|
|
// which implements claims validation and verification other than
|
|
// applying policies.
|
|
func (sys *IAMSys) IsAllowedSTS(args iampolicy.Args, parentUser string) bool {
|
|
// If it is an LDAP request, check that user and group
|
|
// policies allow the request.
|
|
if sys.usersSysType == LDAPUsersSysType {
|
|
return sys.IsAllowedLDAPSTS(args, parentUser)
|
|
}
|
|
|
|
var policies []string
|
|
roleArn := args.GetRoleArn()
|
|
if roleArn != "" {
|
|
arn, err := arn.Parse(roleArn)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, fmt.Errorf("error parsing role ARN %s: %v", roleArn, err))
|
|
return false
|
|
}
|
|
policies = newMappedPolicy(sys.rolesMap[arn]).toSlice()
|
|
} else {
|
|
// Lookup the parent user's mapping if there's no role-ARN.
|
|
var err error
|
|
policies, err = sys.store.PolicyDBGet(parentUser, false, args.Groups...)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, fmt.Errorf("error fetching policies on %s: %v", parentUser, err))
|
|
return false
|
|
}
|
|
if len(policies) == 0 {
|
|
// TODO (deprecated in Dec 2021): Only need to handle
|
|
// behavior for STS credentials created in older
|
|
// releases. Otherwise, reject such cases, once older
|
|
// behavior is deprecated.
|
|
|
|
// If there is no parent policy mapping, we fall back to
|
|
// using policy claim from JWT.
|
|
policySet, ok := args.GetPolicies(iamPolicyClaimNameOpenID())
|
|
if !ok {
|
|
// When claims are set, it should have a policy claim field.
|
|
return false
|
|
}
|
|
policies = policySet.ToSlice()
|
|
}
|
|
}
|
|
|
|
combinedPolicy, err := sys.store.GetPolicy(strings.Join(policies, ","))
|
|
if err == errNoSuchPolicy {
|
|
for _, pname := range policies {
|
|
_, err := sys.store.GetPolicy(pname)
|
|
if err == errNoSuchPolicy {
|
|
// all policies presented in the claim should exist
|
|
logger.LogIf(GlobalContext, fmt.Errorf("expected policy (%s) missing from the JWT claim %s, rejecting the request", pname, iamPolicyClaimNameOpenID()))
|
|
return false
|
|
}
|
|
}
|
|
logger.LogIf(GlobalContext, fmt.Errorf("all policies were unexpectedly present!"))
|
|
return false
|
|
}
|
|
|
|
// These are dynamic values set them appropriately.
|
|
args.ConditionValues["username"] = []string{parentUser}
|
|
args.ConditionValues["userid"] = []string{parentUser}
|
|
|
|
// Now check if we have a sessionPolicy.
|
|
hasSessionPolicy, isAllowedSP := isAllowedBySessionPolicy(args)
|
|
if hasSessionPolicy {
|
|
return isAllowedSP && combinedPolicy.IsAllowed(args)
|
|
}
|
|
|
|
// Sub policy not set, this is most common since subPolicy
|
|
// is optional, use the inherited policies.
|
|
return combinedPolicy.IsAllowed(args)
|
|
}
|
|
|
|
func isAllowedBySessionPolicy(args iampolicy.Args) (hasSessionPolicy bool, isAllowed bool) {
|
|
hasSessionPolicy = false
|
|
isAllowed = false
|
|
|
|
// Now check if we have a sessionPolicy.
|
|
spolicy, ok := args.Claims[sessionPolicyNameExtracted]
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
hasSessionPolicy = true
|
|
|
|
spolicyStr, ok := spolicy.(string)
|
|
if !ok {
|
|
// Sub policy if set, should be a string reject
|
|
// malformed/malicious requests.
|
|
return
|
|
}
|
|
|
|
// Check if policy is parseable.
|
|
subPolicy, err := iampolicy.ParseConfig(bytes.NewReader([]byte(spolicyStr)))
|
|
if err != nil {
|
|
// Log any error in input session policy config.
|
|
logger.LogIf(GlobalContext, err)
|
|
return
|
|
}
|
|
|
|
// Policy without Version string value reject it.
|
|
if subPolicy.Version == "" {
|
|
return
|
|
}
|
|
|
|
// Sub policy is set and valid.
|
|
return hasSessionPolicy, subPolicy.IsAllowed(args)
|
|
}
|
|
|
|
// GetCombinedPolicy returns a combined policy combining all policies
|
|
func (sys *IAMSys) GetCombinedPolicy(policies ...string) iampolicy.Policy {
|
|
_, policy := sys.store.FilterPolicies(strings.Join(policies, ","), "")
|
|
return policy
|
|
}
|
|
|
|
// IsAllowed - checks given policy args is allowed to continue the Rest API.
|
|
func (sys *IAMSys) IsAllowed(args iampolicy.Args) bool {
|
|
// If opa is configured, use OPA always.
|
|
if globalAuthZPlugin != nil {
|
|
ok, err := globalAuthZPlugin.IsAllowed(args)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, err)
|
|
}
|
|
return ok
|
|
}
|
|
|
|
// Policies don't apply to the owner.
|
|
if args.IsOwner {
|
|
return true
|
|
}
|
|
|
|
// If the credential is temporary, perform STS related checks.
|
|
ok, parentUser, err := sys.IsTempUser(args.AccountName)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
if ok {
|
|
return sys.IsAllowedSTS(args, parentUser)
|
|
}
|
|
|
|
// If the credential is for a service account, perform related check
|
|
ok, parentUser, err = sys.IsServiceAccount(args.AccountName)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
if ok {
|
|
return sys.IsAllowedServiceAccount(args, parentUser)
|
|
}
|
|
|
|
// Continue with the assumption of a regular user
|
|
policies, err := sys.PolicyDBGet(args.AccountName, false, args.Groups...)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
if len(policies) == 0 {
|
|
// No policy found.
|
|
return false
|
|
}
|
|
|
|
// Policies were found, evaluate all of them.
|
|
return sys.GetCombinedPolicy(policies...).IsAllowed(args)
|
|
}
|
|
|
|
// EnableLDAPSys - enable ldap system users type.
|
|
func (sys *IAMSys) EnableLDAPSys() {
|
|
sys.usersSysType = LDAPUsersSysType
|
|
}
|
|
|
|
// NewIAMSys - creates new config system object.
|
|
func NewIAMSys() *IAMSys {
|
|
return &IAMSys{
|
|
usersSysType: MinIOUsersSysType,
|
|
configLoaded: make(chan struct{}),
|
|
}
|
|
}
|