minio/cmd/iam-store.go
Anis Eleuch 722118386d
iam: Hot load of the policy during request authorization (#20007)
Hot load a policy document when during account authorization evaluation
to avoid returning 403 during server startup, when not all policies are
already loaded.

Add this support for group policies as well.
2024-06-27 17:03:07 -07:00

2809 lines
79 KiB
Go

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"sort"
"strings"
"time"
jsoniter "github.com/json-iterator/go"
"github.com/minio/madmin-go/v3"
"github.com/minio/minio-go/v7/pkg/set"
"github.com/minio/minio/internal/auth"
"github.com/minio/minio/internal/config/identity/openid"
"github.com/minio/minio/internal/jwt"
"github.com/minio/pkg/v3/console"
"github.com/minio/pkg/v3/policy"
"github.com/puzpuzpuz/xsync/v3"
"golang.org/x/sync/singleflight"
)
const (
// IAM configuration directory.
iamConfigPrefix = minioConfigPrefix + "/iam"
// IAM users directory.
iamConfigUsersPrefix = iamConfigPrefix + "/users/"
// IAM service accounts directory.
iamConfigServiceAccountsPrefix = iamConfigPrefix + "/service-accounts/"
// IAM groups directory.
iamConfigGroupsPrefix = iamConfigPrefix + "/groups/"
// IAM policies directory.
iamConfigPoliciesPrefix = iamConfigPrefix + "/policies/"
// IAM sts directory.
iamConfigSTSPrefix = iamConfigPrefix + "/sts/"
// IAM Policy DB prefixes.
iamConfigPolicyDBPrefix = iamConfigPrefix + "/policydb/"
iamConfigPolicyDBUsersPrefix = iamConfigPolicyDBPrefix + "users/"
iamConfigPolicyDBSTSUsersPrefix = iamConfigPolicyDBPrefix + "sts-users/"
iamConfigPolicyDBServiceAccountsPrefix = iamConfigPolicyDBPrefix + "service-accounts/"
iamConfigPolicyDBGroupsPrefix = iamConfigPolicyDBPrefix + "groups/"
// IAM identity file which captures identity credentials.
iamIdentityFile = "identity.json"
// IAM policy file which provides policies for each users.
iamPolicyFile = "policy.json"
// IAM group members file
iamGroupMembersFile = "members.json"
// IAM format file
iamFormatFile = "format.json"
iamFormatVersion1 = 1
minServiceAccountExpiry time.Duration = 15 * time.Minute
maxServiceAccountExpiry time.Duration = 365 * 24 * time.Hour
)
var errInvalidSvcAcctExpiration = errors.New("invalid service account expiration")
type iamFormat struct {
Version int `json:"version"`
}
func newIAMFormatVersion1() iamFormat {
return iamFormat{Version: iamFormatVersion1}
}
func getIAMFormatFilePath() string {
return iamConfigPrefix + SlashSeparator + iamFormatFile
}
func getUserIdentityPath(user string, userType IAMUserType) string {
var basePath string
switch userType {
case svcUser:
basePath = iamConfigServiceAccountsPrefix
case stsUser:
basePath = iamConfigSTSPrefix
default:
basePath = iamConfigUsersPrefix
}
return pathJoin(basePath, user, iamIdentityFile)
}
func saveIAMFormat(ctx context.Context, store IAMStorageAPI) error {
bootstrapTraceMsg("Load IAM format file")
var iamFmt iamFormat
path := getIAMFormatFilePath()
if err := store.loadIAMConfig(ctx, &iamFmt, path); err != nil && !errors.Is(err, errConfigNotFound) {
// if IAM format
return err
}
if iamFmt.Version >= iamFormatVersion1 {
// Nothing to do.
return nil
}
bootstrapTraceMsg("Write IAM format file")
// Save iam format to version 1.
return store.saveIAMConfig(ctx, newIAMFormatVersion1(), path)
}
func getGroupInfoPath(group string) string {
return pathJoin(iamConfigGroupsPrefix, group, iamGroupMembersFile)
}
func getPolicyDocPath(name string) string {
return pathJoin(iamConfigPoliciesPrefix, name, iamPolicyFile)
}
func getMappedPolicyPath(name string, userType IAMUserType, isGroup bool) string {
if isGroup {
return pathJoin(iamConfigPolicyDBGroupsPrefix, name+".json")
}
switch userType {
case svcUser:
return pathJoin(iamConfigPolicyDBServiceAccountsPrefix, name+".json")
case stsUser:
return pathJoin(iamConfigPolicyDBSTSUsersPrefix, name+".json")
default:
return pathJoin(iamConfigPolicyDBUsersPrefix, name+".json")
}
}
// UserIdentity represents a user's secret key and their status
type UserIdentity struct {
Version int `json:"version"`
Credentials auth.Credentials `json:"credentials"`
UpdatedAt time.Time `json:"updatedAt,omitempty"`
}
func newUserIdentity(cred auth.Credentials) UserIdentity {
return UserIdentity{Version: 1, Credentials: cred, UpdatedAt: UTCNow()}
}
// GroupInfo contains info about a group
type GroupInfo struct {
Version int `json:"version"`
Status string `json:"status"`
Members []string `json:"members"`
UpdatedAt time.Time `json:"updatedAt,omitempty"`
}
func newGroupInfo(members []string) GroupInfo {
return GroupInfo{Version: 1, Status: statusEnabled, Members: members, UpdatedAt: UTCNow()}
}
// MappedPolicy represents a policy name mapped to a user or group
type MappedPolicy struct {
Version int `json:"version"`
Policies string `json:"policy"`
UpdatedAt time.Time `json:"updatedAt,omitempty"`
}
// mappedPoliciesToMap copies the map of mapped policies to a regular map.
func mappedPoliciesToMap(m *xsync.MapOf[string, MappedPolicy]) map[string]MappedPolicy {
policies := make(map[string]MappedPolicy, m.Size())
m.Range(func(k string, v MappedPolicy) bool {
policies[k] = v
return true
})
return policies
}
// converts a mapped policy into a slice of distinct policies
func (mp MappedPolicy) toSlice() []string {
var policies []string
for _, policy := range strings.Split(mp.Policies, ",") {
if strings.TrimSpace(policy) == "" {
continue
}
policies = append(policies, policy)
}
return policies
}
func (mp MappedPolicy) policySet() set.StringSet {
return set.CreateStringSet(mp.toSlice()...)
}
func newMappedPolicy(policy string) MappedPolicy {
return MappedPolicy{Version: 1, Policies: policy, UpdatedAt: UTCNow()}
}
// PolicyDoc represents an IAM policy with some metadata.
type PolicyDoc struct {
Version int `json:",omitempty"`
Policy policy.Policy
CreateDate time.Time `json:",omitempty"`
UpdateDate time.Time `json:",omitempty"`
}
func newPolicyDoc(p policy.Policy) PolicyDoc {
now := UTCNow().Round(time.Millisecond)
return PolicyDoc{
Version: 1,
Policy: p,
CreateDate: now,
UpdateDate: now,
}
}
// defaultPolicyDoc - used to wrap a default policy as PolicyDoc.
func defaultPolicyDoc(p policy.Policy) PolicyDoc {
return PolicyDoc{
Version: 1,
Policy: p,
}
}
func (d *PolicyDoc) update(p policy.Policy) {
now := UTCNow().Round(time.Millisecond)
d.UpdateDate = now
if d.CreateDate.IsZero() {
d.CreateDate = now
}
d.Policy = p
}
// parseJSON parses both the old and the new format for storing policy
// definitions.
//
// The on-disk format of policy definitions has changed (around early 12/2021)
// from policy.Policy to PolicyDoc. To avoid a migration, loading supports
// both the old and the new formats.
func (d *PolicyDoc) parseJSON(data []byte) error {
json := jsoniter.ConfigCompatibleWithStandardLibrary
var doc PolicyDoc
err := json.Unmarshal(data, &doc)
if err != nil {
err2 := json.Unmarshal(data, &doc.Policy)
if err2 != nil {
// Just return the first error.
return err
}
d.Policy = doc.Policy
return nil
}
*d = doc
return nil
}
// key options
type options struct {
ttl int64 // expiry in seconds
}
type iamWatchEvent struct {
isCreated bool // !isCreated implies a delete event.
keyPath string
}
// iamCache contains in-memory cache of IAM data.
type iamCache struct {
updatedAt time.Time
// map of policy names to policy definitions
iamPolicyDocsMap map[string]PolicyDoc
// map of regular username to credentials
iamUsersMap map[string]UserIdentity
// map of regular username to policy names
iamUserPolicyMap *xsync.MapOf[string, MappedPolicy]
// STS accounts are loaded on demand and not via the periodic IAM reload.
// map of STS access key to credentials
iamSTSAccountsMap map[string]UserIdentity
// map of STS access key to policy names
iamSTSPolicyMap *xsync.MapOf[string, MappedPolicy]
// map of group names to group info
iamGroupsMap map[string]GroupInfo
// map of user names to groups they are a member of
iamUserGroupMemberships map[string]set.StringSet
// map of group names to policy names
iamGroupPolicyMap *xsync.MapOf[string, MappedPolicy]
}
func newIamCache() *iamCache {
return &iamCache{
iamPolicyDocsMap: map[string]PolicyDoc{},
iamUsersMap: map[string]UserIdentity{},
iamUserPolicyMap: xsync.NewMapOf[string, MappedPolicy](),
iamSTSAccountsMap: map[string]UserIdentity{},
iamSTSPolicyMap: xsync.NewMapOf[string, MappedPolicy](),
iamGroupsMap: map[string]GroupInfo{},
iamUserGroupMemberships: map[string]set.StringSet{},
iamGroupPolicyMap: xsync.NewMapOf[string, MappedPolicy](),
}
}
// buildUserGroupMemberships - builds the memberships map. IMPORTANT:
// Assumes that c.Lock is held by caller.
func (c *iamCache) buildUserGroupMemberships() {
for group, gi := range c.iamGroupsMap {
c.updateGroupMembershipsMap(group, &gi)
}
}
// updateGroupMembershipsMap - updates the memberships map for a
// group. IMPORTANT: Assumes c.Lock() is held by caller.
func (c *iamCache) updateGroupMembershipsMap(group string, gi *GroupInfo) {
if gi == nil {
return
}
for _, member := range gi.Members {
v := c.iamUserGroupMemberships[member]
if v == nil {
v = set.CreateStringSet(group)
} else {
v.Add(group)
}
c.iamUserGroupMemberships[member] = v
}
}
// removeGroupFromMembershipsMap - removes the group from every member
// in the cache. IMPORTANT: Assumes c.Lock() is held by caller.
func (c *iamCache) removeGroupFromMembershipsMap(group string) {
for member, groups := range c.iamUserGroupMemberships {
if !groups.Contains(group) {
continue
}
groups.Remove(group)
c.iamUserGroupMemberships[member] = groups
}
}
// policyDBGet - lower-level helper; does not take locks.
//
// If a group is passed, it returns policies associated with the group.
//
// If a user is passed, it returns policies of the user along with any groups
// that the server knows the user is a member of.
//
// In LDAP users mode, the server does not store any group membership
// information in IAM (i.e sys.iam*Map) - this info is stored only in the STS
// generated credentials. Thus we skip looking up group memberships, user map,
// and group map and check the appropriate policy maps directly.
func (c *iamCache) policyDBGet(store *IAMStoreSys, name string, isGroup bool) ([]string, time.Time, error) {
if isGroup {
if store.getUsersSysType() == MinIOUsersSysType {
g, ok := c.iamGroupsMap[name]
if !ok {
if err := store.loadGroup(context.Background(), name, c.iamGroupsMap); err != nil {
return nil, time.Time{}, err
}
g, ok = c.iamGroupsMap[name]
if !ok {
return nil, time.Time{}, errNoSuchGroup
}
}
// Group is disabled, so we return no policy - this
// ensures the request is denied.
if g.Status == statusDisabled {
return nil, time.Time{}, nil
}
}
policy, ok := c.iamGroupPolicyMap.Load(name)
if ok {
return policy.toSlice(), policy.UpdatedAt, nil
}
if err := store.loadMappedPolicyWithRetry(context.TODO(), name, regUser, true, c.iamGroupPolicyMap, 3); err != nil && !errors.Is(err, errNoSuchPolicy) {
return nil, time.Time{}, err
}
policy, _ = c.iamGroupPolicyMap.Load(name)
return policy.toSlice(), policy.UpdatedAt, nil
}
// When looking for a user's policies, we also check if the user
// and the groups they are member of are enabled.
u, ok := c.iamUsersMap[name]
if ok {
if !u.Credentials.IsValid() {
return nil, time.Time{}, nil
}
}
// For internal IDP regular/service account user accounts, the policy
// mapping is iamUserPolicyMap. For STS accounts, the parent user would be
// passed here and we lookup the mapping in iamSTSPolicyMap.
mp, ok := c.iamUserPolicyMap.Load(name)
if !ok {
if err := store.loadMappedPolicyWithRetry(context.TODO(), name, regUser, false, c.iamUserPolicyMap, 3); err != nil && !errors.Is(err, errNoSuchPolicy) {
return nil, time.Time{}, err
}
mp, ok = c.iamUserPolicyMap.Load(name)
if !ok {
// Since user "name" could be a parent user of an STS account, we look up
// mappings for those too.
mp, ok = c.iamSTSPolicyMap.Load(name)
if !ok {
// Attempt to load parent user mapping for STS accounts
if err := store.loadMappedPolicyWithRetry(context.TODO(), name, stsUser, false, c.iamSTSPolicyMap, 3); err != nil && !errors.Is(err, errNoSuchPolicy) {
return nil, time.Time{}, err
}
mp, _ = c.iamSTSPolicyMap.Load(name)
}
}
}
// returned policy could be empty, we use set to de-duplicate.
policies := set.CreateStringSet(mp.toSlice()...)
for _, group := range u.Credentials.Groups {
if store.getUsersSysType() == MinIOUsersSysType {
g, ok := c.iamGroupsMap[group]
if !ok {
if err := store.loadGroup(context.Background(), group, c.iamGroupsMap); err != nil {
return nil, time.Time{}, err
}
g, ok = c.iamGroupsMap[group]
if !ok {
return nil, time.Time{}, errNoSuchGroup
}
}
// Group is disabled, so we return no policy - this
// ensures the request is denied.
if g.Status == statusDisabled {
return nil, time.Time{}, nil
}
}
policy, ok := c.iamGroupPolicyMap.Load(group)
if !ok {
if err := store.loadMappedPolicyWithRetry(context.TODO(), group, regUser, true, c.iamGroupPolicyMap, 3); err != nil && !errors.Is(err, errNoSuchPolicy) {
return nil, time.Time{}, err
}
policy, _ = c.iamGroupPolicyMap.Load(group)
}
for _, p := range policy.toSlice() {
policies.Add(p)
}
}
for _, group := range c.iamUserGroupMemberships[name].ToSlice() {
if store.getUsersSysType() == MinIOUsersSysType {
g, ok := c.iamGroupsMap[group]
if !ok {
if err := store.loadGroup(context.Background(), group, c.iamGroupsMap); err != nil {
return nil, time.Time{}, err
}
g, ok = c.iamGroupsMap[group]
if !ok {
return nil, time.Time{}, errNoSuchGroup
}
}
// Group is disabled, so we return no policy - this
// ensures the request is denied.
if g.Status == statusDisabled {
return nil, time.Time{}, nil
}
}
policy, ok := c.iamGroupPolicyMap.Load(group)
if !ok {
if err := store.loadMappedPolicyWithRetry(context.TODO(), group, regUser, true, c.iamGroupPolicyMap, 3); err != nil && !errors.Is(err, errNoSuchPolicy) {
return nil, time.Time{}, err
}
policy, _ = c.iamGroupPolicyMap.Load(group)
}
for _, p := range policy.toSlice() {
policies.Add(p)
}
}
return policies.ToSlice(), mp.UpdatedAt, nil
}
func (c *iamCache) updateUserWithClaims(key string, u UserIdentity) error {
if u.Credentials.SessionToken != "" {
jwtClaims, err := extractJWTClaims(u)
if err != nil {
return err
}
u.Credentials.Claims = jwtClaims.Map()
}
if u.Credentials.IsTemp() && !u.Credentials.IsServiceAccount() {
c.iamSTSAccountsMap[key] = u
} else {
c.iamUsersMap[key] = u
}
c.updatedAt = time.Now()
return nil
}
// IAMStorageAPI defines an interface for the IAM persistence layer
type IAMStorageAPI interface {
// The role of the read-write lock is to prevent go routines from
// concurrently reading and writing the IAM storage. The (r)lock()
// functions return the iamCache. The cache can be safely written to
// only when returned by `lock()`.
lock() *iamCache
unlock()
rlock() *iamCache
runlock()
getUsersSysType() UsersSysType
loadPolicyDoc(ctx context.Context, policy string, m map[string]PolicyDoc) error
loadPolicyDocWithRetry(ctx context.Context, policy string, m map[string]PolicyDoc, retries int) error
loadPolicyDocs(ctx context.Context, m map[string]PolicyDoc) error
loadUser(ctx context.Context, user string, userType IAMUserType, m map[string]UserIdentity) error
loadUsers(ctx context.Context, userType IAMUserType, m map[string]UserIdentity) error
loadGroup(ctx context.Context, group string, m map[string]GroupInfo) error
loadGroups(ctx context.Context, m map[string]GroupInfo) error
loadMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool, m *xsync.MapOf[string, MappedPolicy]) error
loadMappedPolicyWithRetry(ctx context.Context, name string, userType IAMUserType, isGroup bool, m *xsync.MapOf[string, MappedPolicy], retries int) error
loadMappedPolicies(ctx context.Context, userType IAMUserType, isGroup bool, m *xsync.MapOf[string, MappedPolicy]) error
saveIAMConfig(ctx context.Context, item interface{}, path string, opts ...options) error
loadIAMConfig(ctx context.Context, item interface{}, path string) error
deleteIAMConfig(ctx context.Context, path string) error
savePolicyDoc(ctx context.Context, policyName string, p PolicyDoc) error
saveMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool, mp MappedPolicy, opts ...options) error
saveUserIdentity(ctx context.Context, name string, userType IAMUserType, u UserIdentity, opts ...options) error
saveGroupInfo(ctx context.Context, group string, gi GroupInfo) error
deletePolicyDoc(ctx context.Context, policyName string) error
deleteMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool) error
deleteUserIdentity(ctx context.Context, name string, userType IAMUserType) error
deleteGroupInfo(ctx context.Context, name string) error
}
// iamStorageWatcher is implemented by `IAMStorageAPI` implementers that
// additionally support watching storage for changes.
type iamStorageWatcher interface {
watch(ctx context.Context, keyPath string) <-chan iamWatchEvent
}
// Set default canned policies only if not already overridden by users.
func setDefaultCannedPolicies(policies map[string]PolicyDoc) {
for _, v := range policy.DefaultPolicies {
if _, ok := policies[v.Name]; !ok {
policies[v.Name] = defaultPolicyDoc(v.Definition)
}
}
}
// LoadIAMCache reads all IAM items and populates a new iamCache object and
// replaces the in-memory cache object.
func (store *IAMStoreSys) LoadIAMCache(ctx context.Context, firstTime bool) error {
bootstrapTraceMsgFirstTime := func(s string) {
if firstTime {
bootstrapTraceMsg(s)
}
}
bootstrapTraceMsgFirstTime("loading IAM data")
newCache := newIamCache()
loadedAt := time.Now()
if iamOS, ok := store.IAMStorageAPI.(*IAMObjectStore); ok {
err := iamOS.loadAllFromObjStore(ctx, newCache, firstTime)
if err != nil {
return err
}
} else {
// Only non-object IAM store (i.e. only etcd backend).
bootstrapTraceMsgFirstTime("loading policy documents")
if err := store.loadPolicyDocs(ctx, newCache.iamPolicyDocsMap); err != nil {
return err
}
// Sets default canned policies, if none are set.
setDefaultCannedPolicies(newCache.iamPolicyDocsMap)
if store.getUsersSysType() == MinIOUsersSysType {
bootstrapTraceMsgFirstTime("loading regular users")
if err := store.loadUsers(ctx, regUser, newCache.iamUsersMap); err != nil {
return err
}
bootstrapTraceMsgFirstTime("loading regular groups")
if err := store.loadGroups(ctx, newCache.iamGroupsMap); err != nil {
return err
}
}
bootstrapTraceMsgFirstTime("loading user policy mapping")
// load polices mapped to users
if err := store.loadMappedPolicies(ctx, regUser, false, newCache.iamUserPolicyMap); err != nil {
return err
}
bootstrapTraceMsgFirstTime("loading group policy mapping")
// load policies mapped to groups
if err := store.loadMappedPolicies(ctx, regUser, true, newCache.iamGroupPolicyMap); err != nil {
return err
}
bootstrapTraceMsgFirstTime("loading service accounts")
// load service accounts
if err := store.loadUsers(ctx, svcUser, newCache.iamUsersMap); err != nil {
return err
}
newCache.buildUserGroupMemberships()
}
cache := store.lock()
defer store.unlock()
// We should only update the in-memory cache if there were no changes
// to the in-memory cache since the disk loading began. If there
// were changes to the in-memory cache we should wait for the next
// cycle until we can safely update the in-memory cache.
//
// An in-memory cache must be replaced only if we know for sure that the
// values loaded from disk are not stale. They might be stale if the
// cached.updatedAt is more recent than the refresh cycle began.
if cache.updatedAt.Before(loadedAt) {
// No one has updated anything since the config was loaded,
// so we just replace whatever is on the disk into memory.
cache.iamGroupPolicyMap = newCache.iamGroupPolicyMap
cache.iamGroupsMap = newCache.iamGroupsMap
cache.iamPolicyDocsMap = newCache.iamPolicyDocsMap
cache.iamUserGroupMemberships = newCache.iamUserGroupMemberships
cache.iamUserPolicyMap = newCache.iamUserPolicyMap
cache.iamUsersMap = newCache.iamUsersMap
// For STS policy map, we need to merge the new cache with the existing
// cache because the periodic IAM reload is partial. The periodic load
// here is to account for STS policy mapping changes that should apply
// for service accounts derived from such STS accounts (i.e. LDAP STS
// accounts).
newCache.iamSTSPolicyMap.Range(func(k string, v MappedPolicy) bool {
cache.iamSTSPolicyMap.Store(k, v)
return true
})
cache.updatedAt = time.Now()
}
return nil
}
// IAMStoreSys contains IAMStorageAPI to add higher-level methods on the storage
// layer.
type IAMStoreSys struct {
IAMStorageAPI
group *singleflight.Group
}
// HasWatcher - returns if the storage system has a watcher.
func (store *IAMStoreSys) HasWatcher() bool {
_, ok := store.IAMStorageAPI.(iamStorageWatcher)
return ok
}
// GetUser - fetches credential from memory.
func (store *IAMStoreSys) GetUser(user string) (UserIdentity, bool) {
cache := store.rlock()
defer store.runlock()
u, ok := cache.iamUsersMap[user]
if !ok {
// Check the sts map
u, ok = cache.iamSTSAccountsMap[user]
}
return u, ok
}
// GetMappedPolicy - fetches mapped policy from memory.
func (store *IAMStoreSys) GetMappedPolicy(name string, isGroup bool) (MappedPolicy, bool) {
cache := store.rlock()
defer store.runlock()
if isGroup {
v, ok := cache.iamGroupPolicyMap.Load(name)
return v, ok
}
return cache.iamUserPolicyMap.Load(name)
}
// GroupNotificationHandler - updates in-memory cache on notification of
// change (e.g. peer notification for object storage and etcd watch
// notification).
func (store *IAMStoreSys) GroupNotificationHandler(ctx context.Context, group string) error {
cache := store.lock()
defer store.unlock()
err := store.loadGroup(ctx, group, cache.iamGroupsMap)
if err != nil && err != errNoSuchGroup {
return err
}
if err == errNoSuchGroup {
// group does not exist - so remove from memory.
cache.removeGroupFromMembershipsMap(group)
delete(cache.iamGroupsMap, group)
cache.iamGroupPolicyMap.Delete(group)
cache.updatedAt = time.Now()
return nil
}
gi := cache.iamGroupsMap[group]
// Updating the group memberships cache happens in two steps:
//
// 1. Remove the group from each user's list of memberships.
// 2. Add the group to each member's list of memberships.
//
// This ensures that regardless of members being added or
// removed, the cache stays current.
cache.removeGroupFromMembershipsMap(group)
cache.updateGroupMembershipsMap(group, &gi)
cache.updatedAt = time.Now()
return nil
}
// PolicyDBGet - fetches policies associated with the given user or group, and
// additional groups if provided.
func (store *IAMStoreSys) PolicyDBGet(name string, groups ...string) ([]string, error) {
if name == "" {
return nil, errInvalidArgument
}
cache := store.rlock()
defer store.runlock()
policies, _, err := cache.policyDBGet(store, name, false)
if err != nil {
return nil, err
}
for _, group := range groups {
ps, _, err := cache.policyDBGet(store, group, true)
if err != nil {
return nil, err
}
policies = append(policies, ps...)
}
return policies, nil
}
// AddUsersToGroup - adds users to group, creating the group if needed.
func (store *IAMStoreSys) AddUsersToGroup(ctx context.Context, group string, members []string) (updatedAt time.Time, err error) {
if group == "" {
return updatedAt, errInvalidArgument
}
cache := store.lock()
defer store.unlock()
// Validate that all members exist.
for _, member := range members {
u, ok := cache.iamUsersMap[member]
if !ok {
return updatedAt, errNoSuchUser
}
cr := u.Credentials
if cr.IsTemp() || cr.IsServiceAccount() {
return updatedAt, errIAMActionNotAllowed
}
}
gi, ok := cache.iamGroupsMap[group]
if !ok {
// Set group as enabled by default when it doesn't
// exist.
gi = newGroupInfo(members)
} else {
gi.Members = set.CreateStringSet(append(gi.Members, members...)...).ToSlice()
gi.UpdatedAt = UTCNow()
}
if err := store.saveGroupInfo(ctx, group, gi); err != nil {
return updatedAt, err
}
cache.iamGroupsMap[group] = gi
// update user-group membership map
for _, member := range members {
gset := cache.iamUserGroupMemberships[member]
if gset == nil {
gset = set.CreateStringSet(group)
} else {
gset.Add(group)
}
cache.iamUserGroupMemberships[member] = gset
}
cache.updatedAt = time.Now()
return gi.UpdatedAt, nil
}
// helper function - does not take any locks. Updates only cache if
// updateCacheOnly is set.
func removeMembersFromGroup(ctx context.Context, store *IAMStoreSys, cache *iamCache, group string, members []string, updateCacheOnly bool) (updatedAt time.Time, err error) {
gi, ok := cache.iamGroupsMap[group]
if !ok {
return updatedAt, errNoSuchGroup
}
s := set.CreateStringSet(gi.Members...)
d := set.CreateStringSet(members...)
gi.Members = s.Difference(d).ToSlice()
if !updateCacheOnly {
err := store.saveGroupInfo(ctx, group, gi)
if err != nil {
return updatedAt, err
}
}
gi.UpdatedAt = UTCNow()
cache.iamGroupsMap[group] = gi
// update user-group membership map
for _, member := range members {
gset := cache.iamUserGroupMemberships[member]
if gset == nil {
continue
}
gset.Remove(group)
cache.iamUserGroupMemberships[member] = gset
}
cache.updatedAt = time.Now()
return gi.UpdatedAt, nil
}
// RemoveUsersFromGroup - removes users from group, deleting it if it is empty.
func (store *IAMStoreSys) RemoveUsersFromGroup(ctx context.Context, group string, members []string) (updatedAt time.Time, err error) {
if group == "" {
return updatedAt, errInvalidArgument
}
cache := store.lock()
defer store.unlock()
// Validate that all members exist.
for _, member := range members {
u, ok := cache.iamUsersMap[member]
if !ok {
return updatedAt, errNoSuchUser
}
cr := u.Credentials
if cr.IsTemp() || cr.IsServiceAccount() {
return updatedAt, errIAMActionNotAllowed
}
}
gi, ok := cache.iamGroupsMap[group]
if !ok {
return updatedAt, errNoSuchGroup
}
// Check if attempting to delete a non-empty group.
if len(members) == 0 && len(gi.Members) != 0 {
return updatedAt, errGroupNotEmpty
}
if len(members) == 0 {
// len(gi.Members) == 0 here.
// Remove the group from storage. First delete the
// mapped policy. No-mapped-policy case is ignored.
if err := store.deleteMappedPolicy(ctx, group, regUser, true); err != nil && !errors.Is(err, errNoSuchPolicy) {
return updatedAt, err
}
if err := store.deleteGroupInfo(ctx, group); err != nil && err != errNoSuchGroup {
return updatedAt, err
}
// Delete from server memory
delete(cache.iamGroupsMap, group)
cache.iamGroupPolicyMap.Delete(group)
cache.updatedAt = time.Now()
return cache.updatedAt, nil
}
return removeMembersFromGroup(ctx, store, cache, group, members, false)
}
// SetGroupStatus - updates group status
func (store *IAMStoreSys) SetGroupStatus(ctx context.Context, group string, enabled bool) (updatedAt time.Time, err error) {
if group == "" {
return updatedAt, errInvalidArgument
}
cache := store.lock()
defer store.unlock()
gi, ok := cache.iamGroupsMap[group]
if !ok {
return updatedAt, errNoSuchGroup
}
if enabled {
gi.Status = statusEnabled
} else {
gi.Status = statusDisabled
}
gi.UpdatedAt = UTCNow()
if err := store.saveGroupInfo(ctx, group, gi); err != nil {
return gi.UpdatedAt, err
}
cache.iamGroupsMap[group] = gi
cache.updatedAt = time.Now()
return gi.UpdatedAt, nil
}
// GetGroupDescription - builds up group description
func (store *IAMStoreSys) GetGroupDescription(group string) (gd madmin.GroupDesc, err error) {
cache := store.rlock()
defer store.runlock()
ps, updatedAt, err := cache.policyDBGet(store, group, true)
if err != nil {
return gd, err
}
policy := strings.Join(ps, ",")
if store.getUsersSysType() != MinIOUsersSysType {
return madmin.GroupDesc{
Name: group,
Policy: policy,
UpdatedAt: updatedAt,
}, nil
}
gi, ok := cache.iamGroupsMap[group]
if !ok {
return gd, errNoSuchGroup
}
return madmin.GroupDesc{
Name: group,
Status: gi.Status,
Members: gi.Members,
Policy: policy,
UpdatedAt: gi.UpdatedAt,
}, nil
}
func (store *IAMStoreSys) updateGroups(ctx context.Context, cache *iamCache) (res []string, err error) {
if store.getUsersSysType() == MinIOUsersSysType {
m := map[string]GroupInfo{}
err = store.loadGroups(ctx, m)
if err != nil {
return
}
cache.iamGroupsMap = m
cache.updatedAt = time.Now()
for k := range cache.iamGroupsMap {
res = append(res, k)
}
}
if store.getUsersSysType() == LDAPUsersSysType {
m := xsync.NewMapOf[string, MappedPolicy]()
err = store.loadMappedPolicies(ctx, stsUser, true, m)
if err != nil {
return
}
cache.iamGroupPolicyMap = m
cache.updatedAt = time.Now()
cache.iamGroupPolicyMap.Range(func(k string, v MappedPolicy) bool {
res = append(res, k)
return true
})
}
return res, nil
}
// ListGroups - lists groups. Since this is not going to be a frequent
// operation, we fetch this info from storage, and refresh the cache as well.
func (store *IAMStoreSys) ListGroups(ctx context.Context) (res []string, err error) {
cache := store.lock()
defer store.unlock()
return store.updateGroups(ctx, cache)
}
// listGroups - lists groups - fetch groups from cache
func (store *IAMStoreSys) listGroups(ctx context.Context) (res []string, err error) {
cache := store.rlock()
defer store.runlock()
if store.getUsersSysType() == MinIOUsersSysType {
for k := range cache.iamGroupsMap {
res = append(res, k)
}
}
if store.getUsersSysType() == LDAPUsersSysType {
cache.iamGroupPolicyMap.Range(func(k string, _ MappedPolicy) bool {
res = append(res, k)
return true
})
}
return
}
// PolicyDBUpdate - adds or removes given policies to/from the user or group's
// policy associations.
func (store *IAMStoreSys) PolicyDBUpdate(ctx context.Context, name string, isGroup bool,
userType IAMUserType, policies []string, isAttach bool) (updatedAt time.Time,
addedOrRemoved, effectivePolicies []string, err error,
) {
if name == "" {
err = errInvalidArgument
return
}
cache := store.lock()
defer store.unlock()
// Load existing policy mapping
var mp MappedPolicy
if !isGroup {
if userType == stsUser {
stsMap := xsync.NewMapOf[string, MappedPolicy]()
// Attempt to load parent user mapping for STS accounts
store.loadMappedPolicy(context.TODO(), name, stsUser, false, stsMap)
mp, _ = stsMap.Load(name)
} else {
mp, _ = cache.iamUserPolicyMap.Load(name)
}
} else {
if store.getUsersSysType() == MinIOUsersSysType {
g, ok := cache.iamGroupsMap[name]
if !ok {
err = errNoSuchGroup
return
}
if g.Status == statusDisabled {
err = errGroupDisabled
return
}
}
mp, _ = cache.iamGroupPolicyMap.Load(name)
}
// Compute net policy change effect and updated policy mapping
existingPolicySet := mp.policySet()
policiesToUpdate := set.CreateStringSet(policies...)
var newPolicySet set.StringSet
newPolicyMapping := mp
if isAttach {
// new policies to attach => inputPolicies - existing (set difference)
policiesToUpdate = policiesToUpdate.Difference(existingPolicySet)
// validate that new policies to add are defined.
for _, p := range policiesToUpdate.ToSlice() {
if _, found := cache.iamPolicyDocsMap[p]; !found {
err = errNoSuchPolicy
return
}
}
newPolicySet = existingPolicySet.Union(policiesToUpdate)
} else {
// policies to detach => inputPolicies ∩ existing (intersection)
policiesToUpdate = policiesToUpdate.Intersection(existingPolicySet)
newPolicySet = existingPolicySet.Difference(policiesToUpdate)
}
// We return an error if the requested policy update will have no effect.
if policiesToUpdate.IsEmpty() {
err = errNoPolicyToAttachOrDetach
return
}
newPolicies := newPolicySet.ToSlice()
newPolicyMapping.Policies = strings.Join(newPolicies, ",")
newPolicyMapping.UpdatedAt = UTCNow()
addedOrRemoved = policiesToUpdate.ToSlice()
// In case of detach operation, it is possible that no policies are mapped -
// in this case, we delete the mapping from the store.
if len(newPolicies) == 0 {
if err = store.deleteMappedPolicy(ctx, name, userType, isGroup); err != nil && !errors.Is(err, errNoSuchPolicy) {
return
}
if !isGroup {
if userType == stsUser {
cache.iamSTSPolicyMap.Delete(name)
} else {
cache.iamUserPolicyMap.Delete(name)
}
} else {
cache.iamGroupPolicyMap.Delete(name)
}
} else {
if err = store.saveMappedPolicy(ctx, name, userType, isGroup, newPolicyMapping); err != nil {
return
}
if !isGroup {
if userType == stsUser {
cache.iamSTSPolicyMap.Store(name, newPolicyMapping)
} else {
cache.iamUserPolicyMap.Store(name, newPolicyMapping)
}
} else {
cache.iamGroupPolicyMap.Store(name, newPolicyMapping)
}
}
cache.updatedAt = UTCNow()
return cache.updatedAt, addedOrRemoved, newPolicies, nil
}
// PolicyDBSet - update the policy mapping for the given user or group in
// storage and in cache. We do not check for the existence of the user here
// since users can be virtual, such as for:
// - LDAP users
// - CommonName for STS accounts generated by AssumeRoleWithCertificate
func (store *IAMStoreSys) PolicyDBSet(ctx context.Context, name, policy string, userType IAMUserType, isGroup bool) (updatedAt time.Time, err error) {
if name == "" {
return updatedAt, errInvalidArgument
}
cache := store.lock()
defer store.unlock()
// Handle policy mapping removal.
if policy == "" {
if store.getUsersSysType() == LDAPUsersSysType {
// Add a fallback removal towards previous content that may come back
// as a ghost user due to lack of delete, this change occurred
// introduced in PR #11840
store.deleteMappedPolicy(ctx, name, regUser, false)
}
err := store.deleteMappedPolicy(ctx, name, userType, isGroup)
if err != nil && !errors.Is(err, errNoSuchPolicy) {
return updatedAt, err
}
if !isGroup {
if userType == stsUser {
cache.iamSTSPolicyMap.Delete(name)
} else {
cache.iamUserPolicyMap.Delete(name)
}
} else {
cache.iamGroupPolicyMap.Delete(name)
}
cache.updatedAt = time.Now()
return cache.updatedAt, nil
}
// Handle policy mapping set/update
mp := newMappedPolicy(policy)
for _, p := range mp.toSlice() {
if _, found := cache.iamPolicyDocsMap[p]; !found {
return updatedAt, errNoSuchPolicy
}
}
if err := store.saveMappedPolicy(ctx, name, userType, isGroup, mp); err != nil {
return updatedAt, err
}
if !isGroup {
if userType == stsUser {
cache.iamSTSPolicyMap.Store(name, mp)
} else {
cache.iamUserPolicyMap.Store(name, mp)
}
} else {
cache.iamGroupPolicyMap.Store(name, mp)
}
cache.updatedAt = time.Now()
return mp.UpdatedAt, nil
}
// PolicyNotificationHandler - loads given policy from storage. If not present,
// deletes from cache. This notification only reads from storage, and updates
// cache. When the notification is for a policy deletion, it updates the
// user-policy and group-policy maps as well.
func (store *IAMStoreSys) PolicyNotificationHandler(ctx context.Context, policy string) error {
if policy == "" {
return errInvalidArgument
}
cache := store.lock()
defer store.unlock()
err := store.loadPolicyDoc(ctx, policy, cache.iamPolicyDocsMap)
if errors.Is(err, errNoSuchPolicy) {
// policy was deleted, update cache.
delete(cache.iamPolicyDocsMap, policy)
// update user policy map
cache.iamUserPolicyMap.Range(func(u string, mp MappedPolicy) bool {
pset := mp.policySet()
if !pset.Contains(policy) {
return true
}
if store.getUsersSysType() == MinIOUsersSysType {
_, ok := cache.iamUsersMap[u]
if !ok {
// happens when account is deleted or
// expired.
cache.iamUserPolicyMap.Delete(u)
return true
}
}
pset.Remove(policy)
cache.iamUserPolicyMap.Store(u, newMappedPolicy(strings.Join(pset.ToSlice(), ",")))
return true
})
// update group policy map
cache.iamGroupPolicyMap.Range(func(g string, mp MappedPolicy) bool {
pset := mp.policySet()
if !pset.Contains(policy) {
return true
}
pset.Remove(policy)
cache.iamGroupPolicyMap.Store(g, newMappedPolicy(strings.Join(pset.ToSlice(), ",")))
return true
})
cache.updatedAt = time.Now()
return nil
}
return err
}
// DeletePolicy - deletes policy from storage and cache. When this called in
// response to a notification (i.e. isFromNotification = true), it skips the
// validation of policy usage and the attempt to delete in the backend as well
// (as this is already done by the notifying node).
func (store *IAMStoreSys) DeletePolicy(ctx context.Context, policy string, isFromNotification bool) error {
if policy == "" {
return errInvalidArgument
}
cache := store.lock()
defer store.unlock()
if !isFromNotification {
// Check if policy is mapped to any existing user or group. If so, we do not
// allow deletion of the policy. If the policy is mapped to an STS account,
// we do allow deletion.
users := []string{}
groups := []string{}
cache.iamUserPolicyMap.Range(func(u string, mp MappedPolicy) bool {
pset := mp.policySet()
if store.getUsersSysType() == MinIOUsersSysType {
if _, ok := cache.iamUsersMap[u]; !ok {
// This case can happen when a temporary account is
// deleted or expired - remove it from userPolicyMap.
cache.iamUserPolicyMap.Delete(u)
return true
}
}
if pset.Contains(policy) {
users = append(users, u)
}
return true
})
cache.iamGroupPolicyMap.Range(func(g string, mp MappedPolicy) bool {
pset := mp.policySet()
if pset.Contains(policy) {
groups = append(groups, g)
}
return true
})
if len(users) != 0 || len(groups) != 0 {
return errPolicyInUse
}
err := store.deletePolicyDoc(ctx, policy)
if errors.Is(err, errNoSuchPolicy) {
// Ignore error if policy is already deleted.
err = nil
}
if err != nil {
return err
}
}
delete(cache.iamPolicyDocsMap, policy)
cache.updatedAt = time.Now()
return nil
}
// GetPolicy - gets the policy definition. Allows specifying multiple comma
// separated policies - returns a combined policy.
func (store *IAMStoreSys) GetPolicy(name string) (policy.Policy, error) {
if name == "" {
return policy.Policy{}, errInvalidArgument
}
cache := store.rlock()
defer store.runlock()
policies := newMappedPolicy(name).toSlice()
var toMerge []policy.Policy
for _, policy := range policies {
if policy == "" {
continue
}
v, ok := cache.iamPolicyDocsMap[policy]
if !ok {
return v.Policy, errNoSuchPolicy
}
toMerge = append(toMerge, v.Policy)
}
if len(toMerge) == 0 {
return policy.Policy{}, errNoSuchPolicy
}
return policy.MergePolicies(toMerge...), nil
}
// GetPolicyDoc - gets the policy doc which has the policy and some metadata.
// Exactly one policy must be specified here.
func (store *IAMStoreSys) GetPolicyDoc(name string) (r PolicyDoc, err error) {
name = strings.TrimSpace(name)
if name == "" {
return r, errInvalidArgument
}
cache := store.rlock()
defer store.runlock()
v, ok := cache.iamPolicyDocsMap[name]
if !ok {
return r, errNoSuchPolicy
}
return v, nil
}
// SetPolicy - creates a policy with name.
func (store *IAMStoreSys) SetPolicy(ctx context.Context, name string, policy policy.Policy) (time.Time, error) {
if policy.IsEmpty() || name == "" {
return time.Time{}, errInvalidArgument
}
cache := store.lock()
defer store.unlock()
var (
d PolicyDoc
ok bool
)
if d, ok = cache.iamPolicyDocsMap[name]; ok {
d.update(policy)
} else {
d = newPolicyDoc(policy)
}
if err := store.savePolicyDoc(ctx, name, d); err != nil {
return d.UpdateDate, err
}
cache.iamPolicyDocsMap[name] = d
cache.updatedAt = time.Now()
return d.UpdateDate, nil
}
// ListPolicies - fetches all policies from storage and updates cache as well.
// If bucketName is non-empty, returns policies matching the bucket.
func (store *IAMStoreSys) ListPolicies(ctx context.Context, bucketName string) (map[string]policy.Policy, error) {
cache := store.lock()
defer store.unlock()
m := map[string]PolicyDoc{}
err := store.loadPolicyDocs(ctx, m)
if err != nil {
return nil, err
}
// Sets default canned policies
setDefaultCannedPolicies(m)
cache.iamPolicyDocsMap = m
cache.updatedAt = time.Now()
ret := map[string]policy.Policy{}
for k, v := range m {
if bucketName == "" || v.Policy.MatchResource(bucketName) {
ret[k] = v.Policy
}
}
return ret, nil
}
// ListPolicyDocs - fetches all policy docs from storage and updates cache as well.
// If bucketName is non-empty, returns policy docs matching the bucket.
func (store *IAMStoreSys) ListPolicyDocs(ctx context.Context, bucketName string) (map[string]PolicyDoc, error) {
cache := store.lock()
defer store.unlock()
m := map[string]PolicyDoc{}
err := store.loadPolicyDocs(ctx, m)
if err != nil {
return nil, err
}
// Sets default canned policies
setDefaultCannedPolicies(m)
cache.iamPolicyDocsMap = m
cache.updatedAt = time.Now()
ret := map[string]PolicyDoc{}
for k, v := range m {
if bucketName == "" || v.Policy.MatchResource(bucketName) {
ret[k] = v
}
}
return ret, nil
}
// fetches all policy docs from cache.
// If bucketName is non-empty, returns policy docs matching the bucket.
func (store *IAMStoreSys) listPolicyDocs(ctx context.Context, bucketName string) (map[string]PolicyDoc, error) {
cache := store.rlock()
defer store.runlock()
ret := map[string]PolicyDoc{}
for k, v := range cache.iamPolicyDocsMap {
if bucketName == "" || v.Policy.MatchResource(bucketName) {
ret[k] = v
}
}
return ret, nil
}
// helper function - does not take locks.
func filterPolicies(cache *iamCache, policyName string, bucketName string) (string, policy.Policy) {
var policies []string
mp := newMappedPolicy(policyName)
var toMerge []policy.Policy
for _, policy := range mp.toSlice() {
if policy == "" {
continue
}
p, found := cache.iamPolicyDocsMap[policy]
if !found {
continue
}
if bucketName == "" || p.Policy.MatchResource(bucketName) {
policies = append(policies, policy)
toMerge = append(toMerge, p.Policy)
}
}
return strings.Join(policies, ","), policy.MergePolicies(toMerge...)
}
// MergePolicies - accepts a comma separated list of policy names as a string
// and returns only policies that currently exist in MinIO. It includes hot loading
// of policies if not in the memory
func (store *IAMStoreSys) MergePolicies(policyName string) (string, policy.Policy) {
var policies []string
var missingPolicies []string
var toMerge []policy.Policy
cache := store.rlock()
for _, policy := range newMappedPolicy(policyName).toSlice() {
if policy == "" {
continue
}
p, found := cache.iamPolicyDocsMap[policy]
if !found {
missingPolicies = append(missingPolicies, policy)
continue
}
policies = append(policies, policy)
toMerge = append(toMerge, p.Policy)
}
store.runlock()
if len(missingPolicies) > 0 {
m := make(map[string]PolicyDoc)
for _, policy := range missingPolicies {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
_ = store.loadPolicyDoc(ctx, policy, m)
cancel()
}
cache := store.lock()
for policy, p := range m {
cache.iamPolicyDocsMap[policy] = p
}
store.unlock()
for policy, p := range m {
policies = append(policies, policy)
toMerge = append(toMerge, p.Policy)
}
}
return strings.Join(policies, ","), policy.MergePolicies(toMerge...)
}
// GetBucketUsers - returns users (not STS or service accounts) that have access
// to the bucket. User is included even if a group policy that grants access to
// the bucket is disabled.
func (store *IAMStoreSys) GetBucketUsers(bucket string) (map[string]madmin.UserInfo, error) {
if bucket == "" {
return nil, errInvalidArgument
}
cache := store.rlock()
defer store.runlock()
result := map[string]madmin.UserInfo{}
for k, v := range cache.iamUsersMap {
c := v.Credentials
if c.IsTemp() || c.IsServiceAccount() {
continue
}
var policies []string
mp, ok := cache.iamUserPolicyMap.Load(k)
if ok {
policies = append(policies, mp.Policies)
for _, group := range cache.iamUserGroupMemberships[k].ToSlice() {
if nmp, ok := cache.iamGroupPolicyMap.Load(group); ok {
policies = append(policies, nmp.Policies)
}
}
}
matchedPolicies, _ := filterPolicies(cache, strings.Join(policies, ","), bucket)
if len(matchedPolicies) > 0 {
result[k] = madmin.UserInfo{
PolicyName: matchedPolicies,
Status: func() madmin.AccountStatus {
if c.IsValid() {
return madmin.AccountEnabled
}
return madmin.AccountDisabled
}(),
MemberOf: cache.iamUserGroupMemberships[k].ToSlice(),
}
}
}
return result, nil
}
// GetUsers - returns all users (not STS or service accounts).
func (store *IAMStoreSys) GetUsers() map[string]madmin.UserInfo {
cache := store.rlock()
defer store.runlock()
result := map[string]madmin.UserInfo{}
for k, u := range cache.iamUsersMap {
v := u.Credentials
if v.IsTemp() || v.IsServiceAccount() {
continue
}
pl, _ := cache.iamUserPolicyMap.Load(k)
result[k] = madmin.UserInfo{
PolicyName: pl.Policies,
Status: func() madmin.AccountStatus {
if v.IsValid() {
return madmin.AccountEnabled
}
return madmin.AccountDisabled
}(),
MemberOf: cache.iamUserGroupMemberships[k].ToSlice(),
UpdatedAt: pl.UpdatedAt,
}
}
return result
}
// GetUsersWithMappedPolicies - safely returns the name of access keys with associated policies
func (store *IAMStoreSys) GetUsersWithMappedPolicies() map[string]string {
cache := store.rlock()
defer store.runlock()
result := make(map[string]string)
cache.iamUserPolicyMap.Range(func(k string, v MappedPolicy) bool {
result[k] = v.Policies
return true
})
cache.iamSTSPolicyMap.Range(func(k string, v MappedPolicy) bool {
result[k] = v.Policies
return true
})
return result
}
// GetUserInfo - get info on a user.
func (store *IAMStoreSys) GetUserInfo(name string) (u madmin.UserInfo, err error) {
if name == "" {
return u, errInvalidArgument
}
cache := store.rlock()
defer store.runlock()
if store.getUsersSysType() != MinIOUsersSysType {
// If the user has a mapped policy or is a member of a group, we
// return that info. Otherwise we return error.
var groups []string
for _, v := range cache.iamUsersMap {
if v.Credentials.ParentUser == name {
groups = v.Credentials.Groups
break
}
}
for _, v := range cache.iamSTSAccountsMap {
if v.Credentials.ParentUser == name {
groups = v.Credentials.Groups
break
}
}
mappedPolicy, ok := cache.iamUserPolicyMap.Load(name)
if !ok {
mappedPolicy, ok = cache.iamSTSPolicyMap.Load(name)
}
if !ok {
// Attempt to load parent user mapping for STS accounts
store.loadMappedPolicy(context.TODO(), name, stsUser, false, cache.iamSTSPolicyMap)
mappedPolicy, ok = cache.iamSTSPolicyMap.Load(name)
if !ok {
return u, errNoSuchUser
}
}
return madmin.UserInfo{
PolicyName: mappedPolicy.Policies,
MemberOf: groups,
UpdatedAt: mappedPolicy.UpdatedAt,
}, nil
}
ui, found := cache.iamUsersMap[name]
if !found {
return u, errNoSuchUser
}
cred := ui.Credentials
if cred.IsTemp() || cred.IsServiceAccount() {
return u, errIAMActionNotAllowed
}
pl, _ := cache.iamUserPolicyMap.Load(name)
return madmin.UserInfo{
PolicyName: pl.Policies,
Status: func() madmin.AccountStatus {
if cred.IsValid() {
return madmin.AccountEnabled
}
return madmin.AccountDisabled
}(),
MemberOf: cache.iamUserGroupMemberships[name].ToSlice(),
UpdatedAt: pl.UpdatedAt,
}, nil
}
// PolicyMappingNotificationHandler - handles updating a policy mapping from storage.
func (store *IAMStoreSys) PolicyMappingNotificationHandler(ctx context.Context, userOrGroup string, isGroup bool, userType IAMUserType) error {
if userOrGroup == "" {
return errInvalidArgument
}
cache := store.lock()
defer store.unlock()
var m *xsync.MapOf[string, MappedPolicy]
switch {
case isGroup:
m = cache.iamGroupPolicyMap
case userType == stsUser:
m = cache.iamSTSPolicyMap
default:
m = cache.iamUserPolicyMap
}
err := store.loadMappedPolicy(ctx, userOrGroup, userType, isGroup, m)
if errors.Is(err, errNoSuchPolicy) {
// This means that the policy mapping was deleted, so we update
// the cache.
m.Delete(userOrGroup)
cache.updatedAt = time.Now()
err = nil
}
return err
}
// UserNotificationHandler - handles updating a user/STS account/service account
// from storage.
func (store *IAMStoreSys) UserNotificationHandler(ctx context.Context, accessKey string, userType IAMUserType) error {
if accessKey == "" {
return errInvalidArgument
}
cache := store.lock()
defer store.unlock()
var m map[string]UserIdentity
switch userType {
case stsUser:
m = cache.iamSTSAccountsMap
default:
m = cache.iamUsersMap
}
err := store.loadUser(ctx, accessKey, userType, m)
if err == errNoSuchUser {
// User was deleted - we update the cache.
delete(m, accessKey)
// Since cache was updated, we update the timestamp.
defer func() {
cache.updatedAt = time.Now()
}()
// 1. Start with updating user-group memberships
if store.getUsersSysType() == MinIOUsersSysType {
memberOf := cache.iamUserGroupMemberships[accessKey].ToSlice()
for _, group := range memberOf {
_, removeErr := removeMembersFromGroup(ctx, store, cache, group, []string{accessKey}, true)
if removeErr == errNoSuchGroup {
removeErr = nil
}
if removeErr != nil {
return removeErr
}
}
}
// 2. Remove any derived credentials from memory
if userType == regUser {
for k, u := range cache.iamUsersMap {
if u.Credentials.IsServiceAccount() && u.Credentials.ParentUser == accessKey {
delete(cache.iamUsersMap, k)
}
}
for k, u := range cache.iamSTSAccountsMap {
if u.Credentials.ParentUser == accessKey {
delete(cache.iamSTSAccountsMap, k)
}
}
}
// 3. Delete any mapped policy
cache.iamUserPolicyMap.Delete(accessKey)
return nil
}
if err != nil {
return err
}
// Since cache was updated, we update the timestamp.
defer func() {
cache.updatedAt = time.Now()
}()
cred := m[accessKey].Credentials
switch userType {
case stsUser:
// For STS accounts a policy is mapped to the parent user (if a mapping exists).
err = store.loadMappedPolicy(ctx, cred.ParentUser, userType, false, cache.iamSTSPolicyMap)
case svcUser:
// For service accounts, the parent may be a regular (internal) IDP
// user or a "virtual" user (parent of an STS account).
//
// If parent is a regular user => policy mapping is done on that parent itself.
//
// If parent is "virtual" => policy mapping is done on the virtual
// parent and that virtual parent is an stsUser.
//
// To load the appropriate mapping, we check the parent user type.
_, parentIsRegularUser := cache.iamUsersMap[cred.ParentUser]
if parentIsRegularUser {
err = store.loadMappedPolicy(ctx, cred.ParentUser, regUser, false, cache.iamUserPolicyMap)
} else {
err = store.loadMappedPolicy(ctx, cred.ParentUser, stsUser, false, cache.iamSTSPolicyMap)
}
case regUser:
// For regular users, we load the mapped policy.
err = store.loadMappedPolicy(ctx, accessKey, userType, false, cache.iamUserPolicyMap)
default:
// This is just to ensure that we have covered all cases for new
// code in future.
panic("unknown user type")
}
// Ignore policy not mapped error
if err != nil && !errors.Is(err, errNoSuchPolicy) {
return err
}
return nil
}
// DeleteUser - deletes a user from storage and cache. This only used with
// long-term users and service accounts, not STS.
func (store *IAMStoreSys) DeleteUser(ctx context.Context, accessKey string, userType IAMUserType) error {
if accessKey == "" {
return errInvalidArgument
}
cache := store.lock()
defer store.unlock()
// first we remove the user from their groups.
if store.getUsersSysType() == MinIOUsersSysType && userType == regUser {
memberOf := cache.iamUserGroupMemberships[accessKey].ToSlice()
for _, group := range memberOf {
_, removeErr := removeMembersFromGroup(ctx, store, cache, group, []string{accessKey}, false)
if removeErr != nil {
return removeErr
}
}
}
// Now we can remove the user from memory and IAM store
// Delete any STS and service account derived from this credential
// first.
if userType == regUser {
for _, ui := range cache.iamUsersMap {
u := ui.Credentials
if u.ParentUser == accessKey {
switch {
case u.IsServiceAccount():
_ = store.deleteUserIdentity(ctx, u.AccessKey, svcUser)
delete(cache.iamUsersMap, u.AccessKey)
case u.IsTemp():
_ = store.deleteUserIdentity(ctx, u.AccessKey, stsUser)
delete(cache.iamUsersMap, u.AccessKey)
}
}
}
}
// It is ok to ignore deletion error on the mapped policy
store.deleteMappedPolicy(ctx, accessKey, userType, false)
cache.iamUserPolicyMap.Delete(accessKey)
err := store.deleteUserIdentity(ctx, accessKey, userType)
if err == errNoSuchUser {
// ignore if user is already deleted.
err = nil
}
delete(cache.iamUsersMap, accessKey)
store.group.Forget(accessKey)
cache.updatedAt = time.Now()
return err
}
// SetTempUser - saves temporary (STS) credential to storage and cache. If a
// policy name is given, it is associated with the parent user specified in the
// credential.
func (store *IAMStoreSys) SetTempUser(ctx context.Context, accessKey string, cred auth.Credentials, policyName string) (time.Time, error) {
if accessKey == "" || !cred.IsTemp() || cred.IsExpired() || cred.ParentUser == "" {
return time.Time{}, errInvalidArgument
}
ttl := int64(cred.Expiration.Sub(UTCNow()).Seconds())
cache := store.lock()
defer store.unlock()
if policyName != "" {
mp := newMappedPolicy(policyName)
_, combinedPolicyStmt := filterPolicies(cache, mp.Policies, "")
if combinedPolicyStmt.IsEmpty() {
return time.Time{}, fmt.Errorf("specified policy %s, not found %w", policyName, errNoSuchPolicy)
}
err := store.saveMappedPolicy(ctx, cred.ParentUser, stsUser, false, mp, options{ttl: ttl})
if err != nil {
return time.Time{}, err
}
cache.iamSTSPolicyMap.Store(cred.ParentUser, mp)
}
u := newUserIdentity(cred)
err := store.saveUserIdentity(ctx, accessKey, stsUser, u, options{ttl: ttl})
if err != nil {
return time.Time{}, err
}
cache.iamSTSAccountsMap[accessKey] = u
cache.updatedAt = time.Now()
return u.UpdatedAt, nil
}
// DeleteUsers - given a set of users or access keys, deletes them along with
// any derived credentials (STS or service accounts) and any associated policy
// mappings.
func (store *IAMStoreSys) DeleteUsers(ctx context.Context, users []string) error {
cache := store.lock()
defer store.unlock()
var deleted bool
usersToDelete := set.CreateStringSet(users...)
for user, ui := range cache.iamUsersMap {
userType := regUser
cred := ui.Credentials
if cred.IsServiceAccount() {
userType = svcUser
} else if cred.IsTemp() {
userType = stsUser
}
if usersToDelete.Contains(user) || usersToDelete.Contains(cred.ParentUser) {
// Delete this user account and its policy mapping
store.deleteMappedPolicy(ctx, user, userType, false)
cache.iamUserPolicyMap.Delete(user)
// we are only logging errors, not handling them.
err := store.deleteUserIdentity(ctx, user, userType)
iamLogIf(GlobalContext, err)
delete(cache.iamUsersMap, user)
store.group.Forget(user)
deleted = true
}
}
if deleted {
cache.updatedAt = time.Now()
}
return nil
}
// ParentUserInfo contains extra info about a the parent user.
type ParentUserInfo struct {
subClaimValue string
roleArns set.StringSet
}
// GetAllParentUsers - returns all distinct "parent-users" associated with STS
// or service credentials, mapped to all distinct roleARNs associated with the
// parent user. The dummy role ARN is associated with parent users from
// policy-claim based OpenID providers.
func (store *IAMStoreSys) GetAllParentUsers() map[string]ParentUserInfo {
cache := store.rlock()
defer store.runlock()
return store.getParentUsers(cache)
}
// assumes store is locked by caller.
func (store *IAMStoreSys) getParentUsers(cache *iamCache) map[string]ParentUserInfo {
res := map[string]ParentUserInfo{}
for _, ui := range cache.iamUsersMap {
cred := ui.Credentials
// Only consider service account or STS credentials with
// non-empty session tokens.
if !(cred.IsServiceAccount() || cred.IsTemp()) ||
cred.SessionToken == "" {
continue
}
var (
err error
claims map[string]interface{} = cred.Claims
)
if cred.IsServiceAccount() {
claims, err = getClaimsFromTokenWithSecret(cred.SessionToken, cred.SecretKey)
} else if cred.IsTemp() {
var secretKey string
secretKey, err = getTokenSigningKey()
if err != nil {
continue
}
claims, err = getClaimsFromTokenWithSecret(cred.SessionToken, secretKey)
}
if err != nil {
continue
}
if cred.ParentUser == "" {
continue
}
subClaimValue := cred.ParentUser
if v, ok := claims[subClaim]; ok {
subFromToken, ok := v.(string)
if ok {
subClaimValue = subFromToken
}
}
if v, ok := claims[ldapActualUser]; ok {
subFromToken, ok := v.(string)
if ok {
subClaimValue = subFromToken
}
}
roleArn := openid.DummyRoleARN.String()
s, ok := claims[roleArnClaim]
val, ok2 := s.(string)
if ok && ok2 {
roleArn = val
}
v, ok := res[cred.ParentUser]
if ok {
res[cred.ParentUser] = ParentUserInfo{
subClaimValue: subClaimValue,
roleArns: v.roleArns.Union(set.CreateStringSet(roleArn)),
}
} else {
res[cred.ParentUser] = ParentUserInfo{
subClaimValue: subClaimValue,
roleArns: set.CreateStringSet(roleArn),
}
}
}
return res
}
// GetAllSTSUserMappings - Loads all STS user policy mappings from storage and
// returns them. Also gets any STS users that do not have policy mappings but have
// Service Accounts or STS keys (This is useful if the user is part of a group)
func (store *IAMStoreSys) GetAllSTSUserMappings(userPredicate func(string) bool) (map[string]string, error) {
cache := store.rlock()
defer store.runlock()
stsMap := make(map[string]string)
m := xsync.NewMapOf[string, MappedPolicy]()
if err := store.loadMappedPolicies(context.Background(), stsUser, false, m); err != nil {
return nil, err
}
m.Range(func(user string, mappedPolicy MappedPolicy) bool {
if userPredicate != nil && !userPredicate(user) {
return true
}
stsMap[user] = mappedPolicy.Policies
return true
})
for user := range store.getParentUsers(cache) {
if _, ok := stsMap[user]; !ok {
if userPredicate != nil && !userPredicate(user) {
continue
}
stsMap[user] = ""
}
}
return stsMap, nil
}
// Assumes store is locked by caller. If users is empty, returns all user mappings.
func (store *IAMStoreSys) listUserPolicyMappings(cache *iamCache, users []string,
userPredicate func(string) bool,
) []madmin.UserPolicyEntities {
var r []madmin.UserPolicyEntities
usersSet := set.CreateStringSet(users...)
cache.iamUserPolicyMap.Range(func(user string, mappedPolicy MappedPolicy) bool {
if userPredicate != nil && !userPredicate(user) {
return true
}
if !usersSet.IsEmpty() && !usersSet.Contains(user) {
return true
}
ps := mappedPolicy.toSlice()
sort.Strings(ps)
r = append(r, madmin.UserPolicyEntities{
User: user,
Policies: ps,
})
return true
})
stsMap := xsync.NewMapOf[string, MappedPolicy]()
for _, user := range users {
// Attempt to load parent user mapping for STS accounts
store.loadMappedPolicy(context.TODO(), user, stsUser, false, stsMap)
}
stsMap.Range(func(user string, mappedPolicy MappedPolicy) bool {
if userPredicate != nil && !userPredicate(user) {
return true
}
ps := mappedPolicy.toSlice()
sort.Strings(ps)
r = append(r, madmin.UserPolicyEntities{
User: user,
Policies: ps,
})
return true
})
sort.Slice(r, func(i, j int) bool {
return r[i].User < r[j].User
})
return r
}
// Assumes store is locked by caller. If groups is empty, returns all group mappings.
func (store *IAMStoreSys) listGroupPolicyMappings(cache *iamCache, groups []string,
groupPredicate func(string) bool,
) []madmin.GroupPolicyEntities {
var r []madmin.GroupPolicyEntities
groupsSet := set.CreateStringSet(groups...)
cache.iamGroupPolicyMap.Range(func(group string, mappedPolicy MappedPolicy) bool {
if groupPredicate != nil && !groupPredicate(group) {
return true
}
if !groupsSet.IsEmpty() && !groupsSet.Contains(group) {
return true
}
ps := mappedPolicy.toSlice()
sort.Strings(ps)
r = append(r, madmin.GroupPolicyEntities{
Group: group,
Policies: ps,
})
return true
})
sort.Slice(r, func(i, j int) bool {
return r[i].Group < r[j].Group
})
return r
}
// Assumes store is locked by caller. If policies is empty, returns all policy mappings.
func (store *IAMStoreSys) listPolicyMappings(cache *iamCache, policies []string,
userPredicate, groupPredicate func(string) bool,
) []madmin.PolicyEntities {
queryPolSet := set.CreateStringSet(policies...)
policyToUsersMap := make(map[string]set.StringSet)
cache.iamUserPolicyMap.Range(func(user string, mappedPolicy MappedPolicy) bool {
if userPredicate != nil && !userPredicate(user) {
return true
}
commonPolicySet := mappedPolicy.policySet()
if !queryPolSet.IsEmpty() {
commonPolicySet = commonPolicySet.Intersection(queryPolSet)
}
for _, policy := range commonPolicySet.ToSlice() {
s, ok := policyToUsersMap[policy]
if !ok {
policyToUsersMap[policy] = set.CreateStringSet(user)
} else {
s.Add(user)
policyToUsersMap[policy] = s
}
}
return true
})
if iamOS, ok := store.IAMStorageAPI.(*IAMObjectStore); ok {
for item := range listIAMConfigItems(context.Background(), iamOS.objAPI, iamConfigPrefix+SlashSeparator+policyDBSTSUsersListKey) {
user := strings.TrimSuffix(item.Item, ".json")
if userPredicate != nil && !userPredicate(user) {
continue
}
var mappedPolicy MappedPolicy
store.loadIAMConfig(context.Background(), &mappedPolicy, getMappedPolicyPath(user, stsUser, false))
commonPolicySet := mappedPolicy.policySet()
if !queryPolSet.IsEmpty() {
commonPolicySet = commonPolicySet.Intersection(queryPolSet)
}
for _, policy := range commonPolicySet.ToSlice() {
s, ok := policyToUsersMap[policy]
if !ok {
policyToUsersMap[policy] = set.CreateStringSet(user)
} else {
s.Add(user)
policyToUsersMap[policy] = s
}
}
}
}
if iamOS, ok := store.IAMStorageAPI.(*IAMEtcdStore); ok {
m := xsync.NewMapOf[string, MappedPolicy]()
err := iamOS.loadMappedPolicies(context.Background(), stsUser, false, m)
if err == nil {
m.Range(func(user string, mappedPolicy MappedPolicy) bool {
if userPredicate != nil && !userPredicate(user) {
return true
}
commonPolicySet := mappedPolicy.policySet()
if !queryPolSet.IsEmpty() {
commonPolicySet = commonPolicySet.Intersection(queryPolSet)
}
for _, policy := range commonPolicySet.ToSlice() {
s, ok := policyToUsersMap[policy]
if !ok {
policyToUsersMap[policy] = set.CreateStringSet(user)
} else {
s.Add(user)
policyToUsersMap[policy] = s
}
}
return true
})
}
}
policyToGroupsMap := make(map[string]set.StringSet)
cache.iamGroupPolicyMap.Range(func(group string, mappedPolicy MappedPolicy) bool {
if groupPredicate != nil && !groupPredicate(group) {
return true
}
commonPolicySet := mappedPolicy.policySet()
if !queryPolSet.IsEmpty() {
commonPolicySet = commonPolicySet.Intersection(queryPolSet)
}
for _, policy := range commonPolicySet.ToSlice() {
s, ok := policyToGroupsMap[policy]
if !ok {
policyToGroupsMap[policy] = set.CreateStringSet(group)
} else {
s.Add(group)
policyToGroupsMap[policy] = s
}
}
return true
})
m := make(map[string]madmin.PolicyEntities, len(policyToGroupsMap))
for policy, groups := range policyToGroupsMap {
s := groups.ToSlice()
sort.Strings(s)
m[policy] = madmin.PolicyEntities{
Policy: policy,
Groups: s,
}
}
for policy, users := range policyToUsersMap {
s := users.ToSlice()
sort.Strings(s)
// Update existing value in map
pe := m[policy]
pe.Policy = policy
pe.Users = s
m[policy] = pe
}
policyEntities := make([]madmin.PolicyEntities, 0, len(m))
for _, v := range m {
policyEntities = append(policyEntities, v)
}
sort.Slice(policyEntities, func(i, j int) bool {
return policyEntities[i].Policy < policyEntities[j].Policy
})
return policyEntities
}
// ListPolicyMappings - return users/groups mapped to policies.
func (store *IAMStoreSys) ListPolicyMappings(q madmin.PolicyEntitiesQuery,
userPredicate, groupPredicate func(string) bool,
) madmin.PolicyEntitiesResult {
cache := store.rlock()
defer store.runlock()
var result madmin.PolicyEntitiesResult
isAllPoliciesQuery := len(q.Users) == 0 && len(q.Groups) == 0 && len(q.Policy) == 0
if len(q.Users) > 0 {
result.UserMappings = store.listUserPolicyMappings(cache, q.Users, userPredicate)
}
if len(q.Groups) > 0 {
result.GroupMappings = store.listGroupPolicyMappings(cache, q.Groups, groupPredicate)
}
if len(q.Policy) > 0 || isAllPoliciesQuery {
result.PolicyMappings = store.listPolicyMappings(cache, q.Policy, userPredicate, groupPredicate)
}
return result
}
// SetUserStatus - sets current user status.
func (store *IAMStoreSys) SetUserStatus(ctx context.Context, accessKey string, status madmin.AccountStatus) (updatedAt time.Time, err error) {
if accessKey != "" && status != madmin.AccountEnabled && status != madmin.AccountDisabled {
return updatedAt, errInvalidArgument
}
cache := store.lock()
defer store.unlock()
ui, ok := cache.iamUsersMap[accessKey]
if !ok {
return updatedAt, errNoSuchUser
}
cred := ui.Credentials
if cred.IsTemp() || cred.IsServiceAccount() {
return updatedAt, errIAMActionNotAllowed
}
uinfo := newUserIdentity(auth.Credentials{
AccessKey: accessKey,
SecretKey: cred.SecretKey,
Status: func() string {
switch string(status) {
case string(madmin.AccountEnabled), string(auth.AccountOn):
return auth.AccountOn
}
return auth.AccountOff
}(),
})
if err := store.saveUserIdentity(ctx, accessKey, regUser, uinfo); err != nil {
return updatedAt, err
}
if err := cache.updateUserWithClaims(accessKey, uinfo); err != nil {
return updatedAt, err
}
return uinfo.UpdatedAt, nil
}
// AddServiceAccount - add a new service account
func (store *IAMStoreSys) AddServiceAccount(ctx context.Context, cred auth.Credentials) (updatedAt time.Time, err error) {
cache := store.lock()
defer store.unlock()
accessKey := cred.AccessKey
parentUser := cred.ParentUser
// Found newly requested service account, to be an existing account -
// reject such operation (updates to the service account are handled in
// a different API).
if su, found := cache.iamUsersMap[accessKey]; found {
scred := su.Credentials
if scred.ParentUser != parentUser {
return updatedAt, fmt.Errorf("%w: the service account access key is taken by another user", errIAMServiceAccountNotAllowed)
}
return updatedAt, fmt.Errorf("%w: the service account access key already taken", errIAMServiceAccountNotAllowed)
}
// Parent user must not be a service account.
if u, found := cache.iamUsersMap[parentUser]; found && u.Credentials.IsServiceAccount() {
return updatedAt, fmt.Errorf("%w: unable to create a service account for another service account", errIAMServiceAccountNotAllowed)
}
u := newUserIdentity(cred)
err = store.saveUserIdentity(ctx, u.Credentials.AccessKey, svcUser, u)
if err != nil {
return updatedAt, err
}
cache.updateUserWithClaims(u.Credentials.AccessKey, u)
return u.UpdatedAt, nil
}
// UpdateServiceAccount - updates a service account on storage.
func (store *IAMStoreSys) UpdateServiceAccount(ctx context.Context, accessKey string, opts updateServiceAccountOpts) (updatedAt time.Time, err error) {
cache := store.lock()
defer store.unlock()
ui, ok := cache.iamUsersMap[accessKey]
if !ok || !ui.Credentials.IsServiceAccount() {
return updatedAt, errNoSuchServiceAccount
}
cr := ui.Credentials
currentSecretKey := cr.SecretKey
if opts.secretKey != "" {
if !auth.IsSecretKeyValid(opts.secretKey) {
return updatedAt, auth.ErrInvalidSecretKeyLength
}
cr.SecretKey = opts.secretKey
}
if opts.name != "" {
cr.Name = opts.name
}
if opts.description != "" {
cr.Description = opts.description
}
if opts.expiration != nil {
expirationInUTC := opts.expiration.UTC()
if err := validateSvcExpirationInUTC(expirationInUTC); err != nil {
return updatedAt, err
}
cr.Expiration = expirationInUTC
}
switch opts.status {
// The caller did not ask to update status account, do nothing
case "":
case string(madmin.AccountEnabled):
cr.Status = auth.AccountOn
case string(madmin.AccountDisabled):
cr.Status = auth.AccountOff
// Update account status
case auth.AccountOn, auth.AccountOff:
cr.Status = opts.status
default:
return updatedAt, errors.New("unknown account status value")
}
m, err := getClaimsFromTokenWithSecret(cr.SessionToken, currentSecretKey)
if err != nil {
return updatedAt, fmt.Errorf("unable to get svc acc claims: %v", err)
}
// Extracted session policy name string can be removed as its not useful
// at this point.
delete(m, sessionPolicyNameExtracted)
// sessionPolicy is nil and there is embedded policy attached we remove
// embedded policy at that point.
if _, ok := m[policy.SessionPolicyName]; ok && opts.sessionPolicy == nil {
delete(m, policy.SessionPolicyName)
m[iamPolicyClaimNameSA()] = inheritedPolicyType
}
if opts.sessionPolicy != nil { // session policies is being updated
if err := opts.sessionPolicy.Validate(); err != nil {
return updatedAt, err
}
policyBuf, err := json.Marshal(opts.sessionPolicy)
if err != nil {
return updatedAt, err
}
if len(policyBuf) > maxSVCSessionPolicySize {
return updatedAt, errSessionPolicyTooLarge
}
// Overwrite session policy claims.
m[policy.SessionPolicyName] = base64.StdEncoding.EncodeToString(policyBuf)
m[iamPolicyClaimNameSA()] = embeddedPolicyType
}
cr.SessionToken, err = auth.JWTSignWithAccessKey(accessKey, m, cr.SecretKey)
if err != nil {
return updatedAt, err
}
u := newUserIdentity(cr)
if err := store.saveUserIdentity(ctx, u.Credentials.AccessKey, svcUser, u); err != nil {
return updatedAt, err
}
if err := cache.updateUserWithClaims(u.Credentials.AccessKey, u); err != nil {
return updatedAt, err
}
return u.UpdatedAt, nil
}
// ListTempAccounts - lists only temporary accounts from the cache.
func (store *IAMStoreSys) ListTempAccounts(ctx context.Context, accessKey string) ([]UserIdentity, error) {
cache := store.rlock()
defer store.runlock()
userExists := false
var tempAccounts []UserIdentity
for _, v := range cache.iamUsersMap {
isDerived := false
if v.Credentials.IsServiceAccount() || v.Credentials.IsTemp() {
isDerived = true
}
if !isDerived && v.Credentials.AccessKey == accessKey {
userExists = true
} else if isDerived && v.Credentials.ParentUser == accessKey {
userExists = true
if v.Credentials.IsTemp() {
// Hide secret key & session key here
v.Credentials.SecretKey = ""
v.Credentials.SessionToken = ""
tempAccounts = append(tempAccounts, v)
}
}
}
if !userExists {
return nil, errNoSuchUser
}
return tempAccounts, nil
}
// ListServiceAccounts - lists only service accounts from the cache.
func (store *IAMStoreSys) ListServiceAccounts(ctx context.Context, accessKey string) ([]auth.Credentials, error) {
cache := store.rlock()
defer store.runlock()
var serviceAccounts []auth.Credentials
for _, u := range cache.iamUsersMap {
v := u.Credentials
if accessKey != "" && v.ParentUser == accessKey {
if v.IsServiceAccount() {
// Hide secret key & session key here
v.SecretKey = ""
v.SessionToken = ""
serviceAccounts = append(serviceAccounts, v)
}
}
}
return serviceAccounts, nil
}
// ListSTSAccounts - lists only STS accounts from the cache.
func (store *IAMStoreSys) ListSTSAccounts(ctx context.Context, accessKey string) ([]auth.Credentials, error) {
cache := store.rlock()
defer store.runlock()
var stsAccounts []auth.Credentials
for _, u := range cache.iamSTSAccountsMap {
v := u.Credentials
if accessKey != "" && v.ParentUser == accessKey {
if v.IsTemp() {
// Hide secret key & session key here
v.SecretKey = ""
v.SessionToken = ""
stsAccounts = append(stsAccounts, v)
}
}
}
return stsAccounts, nil
}
// AddUser - adds/updates long term user account to storage.
func (store *IAMStoreSys) AddUser(ctx context.Context, accessKey string, ureq madmin.AddOrUpdateUserReq) (updatedAt time.Time, err error) {
cache := store.lock()
defer store.unlock()
cache.updatedAt = time.Now()
ui, ok := cache.iamUsersMap[accessKey]
// It is not possible to update an STS account.
if ok && ui.Credentials.IsTemp() {
return updatedAt, errIAMActionNotAllowed
}
u := newUserIdentity(auth.Credentials{
AccessKey: accessKey,
SecretKey: ureq.SecretKey,
Status: func() string {
switch string(ureq.Status) {
case string(madmin.AccountEnabled), string(auth.AccountOn):
return auth.AccountOn
}
return auth.AccountOff
}(),
})
if err := store.saveUserIdentity(ctx, accessKey, regUser, u); err != nil {
return updatedAt, err
}
if err := cache.updateUserWithClaims(accessKey, u); err != nil {
return updatedAt, err
}
return u.UpdatedAt, nil
}
// UpdateUserSecretKey - sets user secret key to storage.
func (store *IAMStoreSys) UpdateUserSecretKey(ctx context.Context, accessKey, secretKey string) error {
cache := store.lock()
defer store.unlock()
cache.updatedAt = time.Now()
ui, ok := cache.iamUsersMap[accessKey]
if !ok {
return errNoSuchUser
}
cred := ui.Credentials
cred.SecretKey = secretKey
u := newUserIdentity(cred)
if err := store.saveUserIdentity(ctx, accessKey, regUser, u); err != nil {
return err
}
return cache.updateUserWithClaims(accessKey, u)
}
// GetSTSAndServiceAccounts - returns all STS and Service account credentials.
func (store *IAMStoreSys) GetSTSAndServiceAccounts() []auth.Credentials {
cache := store.rlock()
defer store.runlock()
var res []auth.Credentials
for _, u := range cache.iamUsersMap {
cred := u.Credentials
if cred.IsServiceAccount() {
res = append(res, cred)
}
}
for _, u := range cache.iamSTSAccountsMap {
res = append(res, u.Credentials)
}
return res
}
// UpdateUserIdentity - updates a user credential.
func (store *IAMStoreSys) UpdateUserIdentity(ctx context.Context, cred auth.Credentials) error {
cache := store.lock()
defer store.unlock()
cache.updatedAt = time.Now()
userType := regUser
if cred.IsServiceAccount() {
userType = svcUser
} else if cred.IsTemp() {
userType = stsUser
}
ui := newUserIdentity(cred)
// Overwrite the user identity here. As store should be
// atomic, it shouldn't cause any corruption.
if err := store.saveUserIdentity(ctx, cred.AccessKey, userType, ui); err != nil {
return err
}
return cache.updateUserWithClaims(cred.AccessKey, ui)
}
// LoadUser - attempts to load user info from storage and updates cache.
func (store *IAMStoreSys) LoadUser(ctx context.Context, accessKey string) error {
// We use singleflight to de-duplicate requests when server
// is coming up and loading accessKey and its associated assets
val, err, shared := store.group.Do(accessKey, func() (val interface{}, err error) {
cache := store.lock()
defer func() {
cache.updatedAt = time.Now()
store.unlock()
}()
_, found := cache.iamUsersMap[accessKey]
// Check for regular user access key
if !found {
err = store.loadUser(ctx, accessKey, regUser, cache.iamUsersMap)
if _, found = cache.iamUsersMap[accessKey]; found {
// load mapped policies
err = store.loadMappedPolicyWithRetry(ctx, accessKey, regUser, false, cache.iamUserPolicyMap, 3)
}
}
// Check for service account
if !found {
err = store.loadUser(ctx, accessKey, svcUser, cache.iamUsersMap)
var svc UserIdentity
svc, found = cache.iamUsersMap[accessKey]
if found {
// Load parent user and mapped policies.
if store.getUsersSysType() == MinIOUsersSysType {
err = store.loadUser(ctx, svc.Credentials.ParentUser, regUser, cache.iamUsersMap)
if err == nil {
err = store.loadMappedPolicyWithRetry(ctx, svc.Credentials.ParentUser, regUser, false, cache.iamUserPolicyMap, 3)
}
} else {
// In case of LDAP the parent user's policy mapping needs to be
// loaded into sts map
err = store.loadMappedPolicyWithRetry(ctx, svc.Credentials.ParentUser, stsUser, false, cache.iamSTSPolicyMap, 3)
}
}
}
// Check for STS account
stsAccountFound := false
var stsUserCred UserIdentity
if !found {
err = store.loadUser(ctx, accessKey, stsUser, cache.iamSTSAccountsMap)
if stsUserCred, found = cache.iamSTSAccountsMap[accessKey]; found {
// Load mapped policy
err = store.loadMappedPolicyWithRetry(ctx, stsUserCred.Credentials.ParentUser, stsUser, false, cache.iamSTSPolicyMap, 3)
stsAccountFound = true
}
}
// Load any associated policy definitions
if !stsAccountFound {
pols, _ := cache.iamUserPolicyMap.Load(accessKey)
for _, policy := range pols.toSlice() {
if _, found = cache.iamPolicyDocsMap[policy]; !found {
err = store.loadPolicyDocWithRetry(ctx, policy, cache.iamPolicyDocsMap, 3)
}
}
} else {
pols, _ := cache.iamSTSPolicyMap.Load(stsUserCred.Credentials.AccessKey)
for _, policy := range pols.toSlice() {
if _, found = cache.iamPolicyDocsMap[policy]; !found {
err = store.loadPolicyDocWithRetry(ctx, policy, cache.iamPolicyDocsMap, 3)
}
}
}
load := len(cache.iamGroupsMap) == 0
if store.getUsersSysType() == LDAPUsersSysType && cache.iamGroupPolicyMap.Size() == 0 {
load = true
}
if load {
if _, err = store.updateGroups(ctx, cache); err != nil {
return "done", err
}
}
cache.buildUserGroupMemberships()
return "done", err
})
if serverDebugLog {
console.Debugln("loadUser: loading shared", val, err, shared)
}
if IsErr(err, errNoSuchUser, errNoSuchPolicy, errNoSuchGroup) {
return nil
}
return err
}
func extractJWTClaims(u UserIdentity) (*jwt.MapClaims, error) {
jwtClaims, err := auth.ExtractClaims(u.Credentials.SessionToken, u.Credentials.SecretKey)
if err != nil {
secretKey, err := getTokenSigningKey()
if err != nil {
return nil, err
}
// Session tokens for STS creds will be generated with root secret or site-replicator-0 secret
jwtClaims, err = auth.ExtractClaims(u.Credentials.SessionToken, secretKey)
if err != nil {
return nil, err
}
}
return jwtClaims, nil
}
func validateSvcExpirationInUTC(expirationInUTC time.Time) error {
if expirationInUTC.IsZero() || expirationInUTC.Equal(timeSentinel) {
// Service accounts might not have expiration in older releases.
return nil
}
currentTime := time.Now().UTC()
minExpiration := currentTime.Add(minServiceAccountExpiry)
maxExpiration := currentTime.Add(maxServiceAccountExpiry)
if expirationInUTC.Before(minExpiration) || expirationInUTC.After(maxExpiration) {
return errInvalidSvcAcctExpiration
}
return nil
}