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1853 lines
47 KiB
1853 lines
47 KiB
/*
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* MinIO Cloud Storage, (C) 2018-2019 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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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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"fmt"
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"github.com/minio/minio-go/v6/pkg/set"
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"github.com/minio/minio/cmd/config"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/auth"
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"github.com/minio/minio/pkg/bucket/policy"
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iampolicy "github.com/minio/minio/pkg/iam/policy"
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"github.com/minio/minio/pkg/madmin"
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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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// IAM configuration directory.
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iamConfigPrefix = minioConfigPrefix + "/iam"
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// IAM users directory.
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iamConfigUsersPrefix = iamConfigPrefix + "/users/"
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// IAM service accounts directory.
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iamConfigServiceAccountsPrefix = iamConfigPrefix + "/service-accounts/"
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// IAM groups directory.
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iamConfigGroupsPrefix = iamConfigPrefix + "/groups/"
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// IAM policies directory.
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iamConfigPoliciesPrefix = iamConfigPrefix + "/policies/"
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// IAM sts directory.
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iamConfigSTSPrefix = iamConfigPrefix + "/sts/"
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// IAM Policy DB prefixes.
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iamConfigPolicyDBPrefix = iamConfigPrefix + "/policydb/"
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iamConfigPolicyDBUsersPrefix = iamConfigPolicyDBPrefix + "users/"
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iamConfigPolicyDBSTSUsersPrefix = iamConfigPolicyDBPrefix + "sts-users/"
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iamConfigPolicyDBServiceAccountsPrefix = iamConfigPolicyDBPrefix + "service-accounts/"
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iamConfigPolicyDBGroupsPrefix = iamConfigPolicyDBPrefix + "groups/"
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// IAM identity file which captures identity credentials.
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iamIdentityFile = "identity.json"
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// IAM policy file which provides policies for each users.
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iamPolicyFile = "policy.json"
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// IAM group members file
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iamGroupMembersFile = "members.json"
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// IAM format file
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iamFormatFile = "format.json"
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iamFormatVersion1 = 1
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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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type iamFormat struct {
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Version int `json:"version"`
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}
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func newIAMFormatVersion1() iamFormat {
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return iamFormat{Version: iamFormatVersion1}
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}
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func getIAMFormatFilePath() string {
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return iamConfigPrefix + SlashSeparator + iamFormatFile
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}
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func getUserIdentityPath(user string, userType IAMUserType) string {
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var basePath string
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switch userType {
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case srvAccUser:
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basePath = iamConfigServiceAccountsPrefix
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case stsUser:
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basePath = iamConfigSTSPrefix
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default:
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basePath = iamConfigUsersPrefix
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}
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return pathJoin(basePath, user, iamIdentityFile)
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}
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func getGroupInfoPath(group string) string {
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return pathJoin(iamConfigGroupsPrefix, group, iamGroupMembersFile)
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}
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func getPolicyDocPath(name string) string {
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return pathJoin(iamConfigPoliciesPrefix, name, iamPolicyFile)
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}
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func getMappedPolicyPath(name string, userType IAMUserType, isGroup bool) string {
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if isGroup {
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return pathJoin(iamConfigPolicyDBGroupsPrefix, name+".json")
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}
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switch userType {
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case srvAccUser:
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return pathJoin(iamConfigPolicyDBServiceAccountsPrefix, name+".json")
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case stsUser:
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return pathJoin(iamConfigPolicyDBSTSUsersPrefix, name+".json")
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default:
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return pathJoin(iamConfigPolicyDBUsersPrefix, name+".json")
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}
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}
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// UserIdentity represents a user's secret key and their status
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type UserIdentity struct {
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Version int `json:"version"`
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Credentials auth.Credentials `json:"credentials"`
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}
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func newUserIdentity(cred auth.Credentials) UserIdentity {
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return UserIdentity{Version: 1, Credentials: cred}
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}
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// GroupInfo contains info about a group
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type GroupInfo struct {
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Version int `json:"version"`
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Status string `json:"status"`
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Members []string `json:"members"`
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}
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func newGroupInfo(members []string) GroupInfo {
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return GroupInfo{Version: 1, Status: statusEnabled, Members: members}
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}
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// MappedPolicy represents a policy name mapped to a user or group
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type MappedPolicy struct {
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Version int `json:"version"`
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Policy string `json:"policy"`
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}
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func newMappedPolicy(policy string) MappedPolicy {
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return MappedPolicy{Version: 1, Policy: policy}
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}
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// IAMSys - config system.
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type IAMSys struct {
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usersSysType UsersSysType
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// map of policy names to policy definitions
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iamPolicyDocsMap map[string]iampolicy.Policy
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// map of usernames to credentials
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iamUsersMap map[string]auth.Credentials
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// map of group names to group info
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iamGroupsMap map[string]GroupInfo
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// map of user names to groups they are a member of
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iamUserGroupMemberships map[string]set.StringSet
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// map of usernames/temporary access keys to policy names
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iamUserPolicyMap map[string]MappedPolicy
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// map of group names to policy names
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iamGroupPolicyMap map[string]MappedPolicy
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// Persistence layer for IAM subsystem
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store IAMStorageAPI
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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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regularUser IAMUserType = iota
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stsUser
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srvAccUser
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)
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// IAMStorageAPI defines an interface for the IAM persistence layer
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type IAMStorageAPI interface {
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lock()
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unlock()
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rlock()
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runlock()
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migrateBackendFormat(context.Context) error
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loadPolicyDoc(policy string, m map[string]iampolicy.Policy) error
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loadPolicyDocs(ctx context.Context, m map[string]iampolicy.Policy) error
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loadUser(user string, userType IAMUserType, m map[string]auth.Credentials) error
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loadUsers(ctx context.Context, userType IAMUserType, m map[string]auth.Credentials) error
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loadGroup(group string, m map[string]GroupInfo) error
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loadGroups(ctx context.Context, m map[string]GroupInfo) error
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loadMappedPolicy(name string, userType IAMUserType, isGroup bool, m map[string]MappedPolicy) error
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loadMappedPolicies(ctx context.Context, userType IAMUserType, isGroup bool, m map[string]MappedPolicy) error
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loadAll(context.Context, *IAMSys) error
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saveIAMConfig(item interface{}, path string) error
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loadIAMConfig(item interface{}, path string) error
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deleteIAMConfig(path string) error
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savePolicyDoc(policyName string, p iampolicy.Policy) error
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saveMappedPolicy(name string, userType IAMUserType, isGroup bool, mp MappedPolicy) error
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saveUserIdentity(name string, userType IAMUserType, u UserIdentity) error
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saveGroupInfo(group string, gi GroupInfo) error
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deletePolicyDoc(policyName string) error
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deleteMappedPolicy(name string, userType IAMUserType, isGroup bool) error
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deleteUserIdentity(name string, userType IAMUserType) error
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deleteGroupInfo(name string) error
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watch(context.Context, *IAMSys)
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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(objAPI ObjectLayer, group string) error {
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if objAPI == nil || sys == nil || sys.store == nil {
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return errServerNotInitialized
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}
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if globalEtcdClient != nil {
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// Watch APIs cover this case, so nothing to do.
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return nil
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}
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sys.store.lock()
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defer sys.store.unlock()
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err := sys.store.loadGroup(group, sys.iamGroupsMap)
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if err != nil && err != errConfigNotFound {
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return err
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}
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if err == errConfigNotFound {
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// group does not exist - so remove from memory.
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sys.removeGroupFromMembershipsMap(group)
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delete(sys.iamGroupsMap, group)
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delete(sys.iamGroupPolicyMap, group)
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return nil
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}
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gi := sys.iamGroupsMap[group]
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// Updating the group memberships cache happens in two steps:
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//
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// 1. Remove the group from each user's list of memberships.
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// 2. Add the group to each member's list of memberships.
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//
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// This ensures that regardless of members being added or
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// removed, the cache stays current.
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sys.removeGroupFromMembershipsMap(group)
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sys.updateGroupMembershipsMap(group, &gi)
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return nil
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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(objAPI ObjectLayer, policyName string) error {
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if objAPI == nil || sys == nil || sys.store == nil {
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return errServerNotInitialized
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}
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sys.store.lock()
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defer sys.store.unlock()
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if globalEtcdClient == nil {
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return sys.store.loadPolicyDoc(policyName, sys.iamPolicyDocsMap)
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}
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// When etcd is set, we use watch APIs so this code is not needed.
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return nil
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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(objAPI ObjectLayer, userOrGroup string, isGroup bool) error {
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if objAPI == nil || sys == nil || sys.store == nil {
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return errServerNotInitialized
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}
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sys.store.lock()
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defer sys.store.unlock()
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if globalEtcdClient == nil {
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var err error
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if isGroup {
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err = sys.store.loadMappedPolicy(userOrGroup, regularUser, isGroup, sys.iamGroupPolicyMap)
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} else {
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err = sys.store.loadMappedPolicy(userOrGroup, regularUser, isGroup, sys.iamUserPolicyMap)
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}
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// Ignore policy not mapped error
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if err != nil && err != errConfigNotFound {
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return err
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}
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}
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// When etcd is set, we use watch APIs so this code is not needed.
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return nil
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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(objAPI ObjectLayer, accessKey string, userType IAMUserType) error {
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if objAPI == nil || sys == nil || sys.store == nil {
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return errServerNotInitialized
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}
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sys.store.lock()
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defer sys.store.unlock()
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if globalEtcdClient == nil {
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err := sys.store.loadUser(accessKey, userType, sys.iamUsersMap)
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if err != nil {
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return err
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}
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err = sys.store.loadMappedPolicy(accessKey, userType, false, sys.iamUserPolicyMap)
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// Ignore policy not mapped error
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if err != nil && err != errConfigNotFound {
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return err
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}
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}
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// When etcd is set, we use watch APIs so this code is not needed.
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return nil
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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(accessKey string) error {
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if sys == nil || sys.store == nil {
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return errServerNotInitialized
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}
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sys.store.lock()
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defer sys.store.unlock()
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if globalEtcdClient == nil {
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err := sys.store.loadUser(accessKey, srvAccUser, sys.iamUsersMap)
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if err != nil {
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return err
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}
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}
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// When etcd is set, we use watch APIs so this code is not needed.
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return nil
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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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// Init - initializes config system from iam.json
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func (sys *IAMSys) Init(ctx context.Context, objAPI ObjectLayer) error {
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if objAPI == nil {
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return errServerNotInitialized
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}
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if globalEtcdClient == nil {
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sys.store = newIAMObjectStore(ctx, objAPI)
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} else {
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sys.store = newIAMEtcdStore(ctx)
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}
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if globalLDAPConfig.Enabled {
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sys.EnableLDAPSys()
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}
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// Migrate IAM configuration
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if err := sys.doIAMConfigMigration(ctx); err != nil {
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return err
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}
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err := sys.store.loadAll(ctx, sys)
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// Invalidate the old cred after finishing IAM initialization
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globalOldCred = auth.Credentials{}
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go sys.store.watch(ctx, sys)
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return err
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}
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// DeletePolicy - deletes a canned policy from backend or etcd.
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func (sys *IAMSys) DeletePolicy(policyName string) error {
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objectAPI := newObjectLayerWithoutSafeModeFn()
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if objectAPI == nil || sys == nil || sys.store == nil {
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return errServerNotInitialized
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}
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if policyName == "" {
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return errInvalidArgument
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}
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sys.store.lock()
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defer sys.store.unlock()
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err := sys.store.deletePolicyDoc(policyName)
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if err == errNoSuchPolicy {
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// Ignore error if policy is already deleted.
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err = nil
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}
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delete(sys.iamPolicyDocsMap, policyName)
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|
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// Delete user-policy mappings that will no longer apply
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var usersToDel []string
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var usersType []IAMUserType
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for u, mp := range sys.iamUserPolicyMap {
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if mp.Policy == policyName {
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cr, ok := sys.iamUsersMap[u]
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if !ok {
|
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// This case cannot happen
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return errNoSuchUser
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|
}
|
|
// User is from STS if the cred are temporary
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|
if cr.IsTemp() {
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usersType = append(usersType, stsUser)
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|
} else {
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usersType = append(usersType, regularUser)
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|
}
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usersToDel = append(usersToDel, u)
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}
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|
}
|
|
for i, u := range usersToDel {
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sys.policyDBSet(u, "", usersType[i], false)
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}
|
|
|
|
// Delete group-policy mappings that will no longer apply
|
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var groupsToDel []string
|
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for g, mp := range sys.iamGroupPolicyMap {
|
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if mp.Policy == policyName {
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groupsToDel = append(groupsToDel, g)
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}
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}
|
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for _, g := range groupsToDel {
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sys.policyDBSet(g, "", regularUser, true)
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}
|
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|
|
return err
|
|
}
|
|
|
|
// InfoPolicy - expands the canned policy into its JSON structure.
|
|
func (sys *IAMSys) InfoPolicy(policyName string) (iampolicy.Policy, error) {
|
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objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
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return iampolicy.Policy{}, errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
v, ok := sys.iamPolicyDocsMap[policyName]
|
|
if !ok {
|
|
return iampolicy.Policy{}, errNoSuchPolicy
|
|
}
|
|
|
|
return v, nil
|
|
}
|
|
|
|
// ListPolicies - lists all canned policies.
|
|
func (sys *IAMSys) ListPolicies() (map[string]iampolicy.Policy, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
policyDocsMap := make(map[string]iampolicy.Policy, len(sys.iamPolicyDocsMap))
|
|
for k, v := range sys.iamPolicyDocsMap {
|
|
policyDocsMap[k] = v
|
|
}
|
|
|
|
return policyDocsMap, nil
|
|
}
|
|
|
|
// SetPolicy - sets a new name policy.
|
|
func (sys *IAMSys) SetPolicy(policyName string, p iampolicy.Policy) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if p.IsEmpty() || policyName == "" {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if err := sys.store.savePolicyDoc(policyName, p); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamPolicyDocsMap[policyName] = p
|
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return nil
|
|
}
|
|
|
|
// DeleteUser - delete user (only for long-term users not STS users).
|
|
func (sys *IAMSys) DeleteUser(accessKey string) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
// First we remove the user from their groups.
|
|
userInfo, getErr := sys.GetUserInfo(accessKey)
|
|
if getErr != nil {
|
|
return getErr
|
|
}
|
|
|
|
for _, group := range userInfo.MemberOf {
|
|
removeErr := sys.RemoveUsersFromGroup(group, []string{accessKey})
|
|
if removeErr != nil {
|
|
return removeErr
|
|
}
|
|
}
|
|
|
|
// Next we can remove the user from memory and IAM store
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
// Delete any service accounts if any first.
|
|
for _, u := range sys.iamUsersMap {
|
|
if u.IsServiceAccount() {
|
|
if u.ParentUser == accessKey {
|
|
_ = sys.store.deleteUserIdentity(u.AccessKey, srvAccUser)
|
|
delete(sys.iamUsersMap, u.AccessKey)
|
|
}
|
|
}
|
|
}
|
|
|
|
// It is ok to ignore deletion error on the mapped policy
|
|
sys.store.deleteMappedPolicy(accessKey, regularUser, false)
|
|
err := sys.store.deleteUserIdentity(accessKey, regularUser)
|
|
if err == errNoSuchUser {
|
|
// ignore if user is already deleted.
|
|
err = nil
|
|
}
|
|
|
|
delete(sys.iamUsersMap, accessKey)
|
|
delete(sys.iamUserPolicyMap, accessKey)
|
|
|
|
return err
|
|
}
|
|
|
|
// SetTempUser - set temporary user credentials, these credentials have an expiry.
|
|
func (sys *IAMSys) SetTempUser(accessKey string, cred auth.Credentials, policyName string) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
// If OPA is not set we honor any policy claims for this
|
|
// temporary user which match with pre-configured canned
|
|
// policies for this server.
|
|
if globalPolicyOPA == nil && policyName != "" {
|
|
p, ok := sys.iamPolicyDocsMap[policyName]
|
|
if !ok {
|
|
return errInvalidArgument
|
|
}
|
|
if p.IsEmpty() {
|
|
delete(sys.iamUserPolicyMap, accessKey)
|
|
return nil
|
|
}
|
|
|
|
mp := newMappedPolicy(policyName)
|
|
if err := sys.store.saveMappedPolicy(accessKey, stsUser, false, mp); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamUserPolicyMap[accessKey] = mp
|
|
}
|
|
|
|
u := newUserIdentity(cred)
|
|
if err := sys.store.saveUserIdentity(accessKey, stsUser, u); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamUsersMap[accessKey] = cred
|
|
return nil
|
|
}
|
|
|
|
// ListUsers - list all users.
|
|
func (sys *IAMSys) ListUsers() (map[string]madmin.UserInfo, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
var users = make(map[string]madmin.UserInfo)
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return nil, errIAMActionNotAllowed
|
|
}
|
|
|
|
for k, v := range sys.iamUsersMap {
|
|
if !v.IsTemp() && !v.IsServiceAccount() {
|
|
users[k] = madmin.UserInfo{
|
|
PolicyName: sys.iamUserPolicyMap[k].Policy,
|
|
Status: func() madmin.AccountStatus {
|
|
if v.IsValid() {
|
|
return madmin.AccountEnabled
|
|
}
|
|
return madmin.AccountDisabled
|
|
}(),
|
|
}
|
|
}
|
|
}
|
|
|
|
return users, nil
|
|
}
|
|
|
|
// IsTempUser - returns if given key is a temporary user.
|
|
func (sys *IAMSys) IsTempUser(name string) (bool, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return false, errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
cred, found := sys.iamUsersMap[name]
|
|
if !found {
|
|
return false, errNoSuchUser
|
|
}
|
|
|
|
return cred.IsTemp(), nil
|
|
}
|
|
|
|
// IsServiceAccount - returns if given key is a service account
|
|
func (sys *IAMSys) IsServiceAccount(name string) (bool, string, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return false, "", errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
cred, found := sys.iamUsersMap[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(name string) (u madmin.UserInfo, err error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return u, errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
// If the user has a mapped policy or is a member of a group, we
|
|
// return that info. Otherwise we return error.
|
|
mappedPolicy, ok1 := sys.iamUserPolicyMap[name]
|
|
memberships, ok2 := sys.iamUserGroupMemberships[name]
|
|
if !ok1 && !ok2 {
|
|
return u, errNoSuchUser
|
|
}
|
|
return madmin.UserInfo{
|
|
PolicyName: mappedPolicy.Policy,
|
|
MemberOf: memberships.ToSlice(),
|
|
}, nil
|
|
}
|
|
|
|
cred, found := sys.iamUsersMap[name]
|
|
if !found {
|
|
return u, errNoSuchUser
|
|
}
|
|
|
|
if cred.IsTemp() || cred.IsServiceAccount() {
|
|
return u, errIAMActionNotAllowed
|
|
}
|
|
|
|
u = madmin.UserInfo{
|
|
PolicyName: sys.iamUserPolicyMap[name].Policy,
|
|
Status: func() madmin.AccountStatus {
|
|
if cred.IsValid() {
|
|
return madmin.AccountEnabled
|
|
}
|
|
return madmin.AccountDisabled
|
|
}(),
|
|
MemberOf: sys.iamUserGroupMemberships[name].ToSlice(),
|
|
}
|
|
return u, nil
|
|
}
|
|
|
|
// SetUserStatus - sets current user status, supports disabled or enabled.
|
|
func (sys *IAMSys) SetUserStatus(accessKey string, status madmin.AccountStatus) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if status != madmin.AccountEnabled && status != madmin.AccountDisabled {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
cred, ok := sys.iamUsersMap[accessKey]
|
|
if !ok {
|
|
return errNoSuchUser
|
|
}
|
|
|
|
if cred.IsTemp() || cred.IsServiceAccount() {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
uinfo := newUserIdentity(auth.Credentials{
|
|
AccessKey: accessKey,
|
|
SecretKey: cred.SecretKey,
|
|
Status: func() string {
|
|
if status == madmin.AccountEnabled {
|
|
return config.EnableOn
|
|
}
|
|
return config.EnableOff
|
|
}(),
|
|
})
|
|
|
|
if err := sys.store.saveUserIdentity(accessKey, regularUser, uinfo); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamUsersMap[accessKey] = uinfo.Credentials
|
|
return nil
|
|
}
|
|
|
|
// NewServiceAccount - create a new service account
|
|
func (sys *IAMSys) NewServiceAccount(ctx context.Context, parentUser string, sessionPolicy *iampolicy.Policy) (auth.Credentials, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return auth.Credentials{}, errServerNotInitialized
|
|
}
|
|
|
|
var policyBuf []byte
|
|
if sessionPolicy != nil {
|
|
err := sessionPolicy.Validate()
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
policyBuf, err = json.Marshal(sessionPolicy)
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
if len(policyBuf) > 16*1024 {
|
|
return auth.Credentials{}, fmt.Errorf("Session policy should not exceed 16 KiB characters")
|
|
}
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if parentUser == globalActiveCred.AccessKey {
|
|
return auth.Credentials{}, errIAMActionNotAllowed
|
|
}
|
|
|
|
cr, ok := sys.iamUsersMap[parentUser]
|
|
if !ok {
|
|
return auth.Credentials{}, errNoSuchUser
|
|
}
|
|
|
|
// Disallow service accounts to further create more service accounts.
|
|
if cr.IsServiceAccount() {
|
|
return auth.Credentials{}, errIAMActionNotAllowed
|
|
}
|
|
|
|
// FIXME: Disallow temporary users with no parent, this is most
|
|
// probably with OpenID which we don't support to provide
|
|
// any parent user, LDAPUsersType and MinIOUsersType are
|
|
// currently supported.
|
|
if cr.ParentUser == "" && cr.IsTemp() {
|
|
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()] = "embedded-policy"
|
|
} else {
|
|
m[iamPolicyClaimNameSA()] = "inherited-policy"
|
|
}
|
|
|
|
secret := globalActiveCred.SecretKey
|
|
cred, err := auth.GetNewCredentialsWithMetadata(m, secret)
|
|
if err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
cred.ParentUser = parentUser
|
|
|
|
u := newUserIdentity(cred)
|
|
|
|
if err := sys.store.saveUserIdentity(u.Credentials.AccessKey, srvAccUser, u); err != nil {
|
|
return auth.Credentials{}, err
|
|
}
|
|
|
|
sys.iamUsersMap[u.Credentials.AccessKey] = u.Credentials
|
|
|
|
return cred, nil
|
|
}
|
|
|
|
// ListServiceAccounts - lists all services accounts associated to a specific user
|
|
func (sys *IAMSys) ListServiceAccounts(ctx context.Context, accessKey string) ([]string, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
var serviceAccounts []string
|
|
|
|
for k, v := range sys.iamUsersMap {
|
|
if v.IsServiceAccount() && v.ParentUser == accessKey {
|
|
serviceAccounts = append(serviceAccounts, k)
|
|
}
|
|
}
|
|
|
|
return serviceAccounts, nil
|
|
}
|
|
|
|
// GetServiceAccountParent - gets information about a service account
|
|
func (sys *IAMSys) GetServiceAccountParent(ctx context.Context, accessKey string) (string, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return "", errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
sa, ok := sys.iamUsersMap[accessKey]
|
|
if !ok || !sa.IsServiceAccount() {
|
|
return "", errNoSuchServiceAccount
|
|
}
|
|
|
|
return sa.ParentUser, nil
|
|
}
|
|
|
|
// DeleteServiceAccount - delete a service account
|
|
func (sys *IAMSys) DeleteServiceAccount(ctx context.Context, accessKey string) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
sa, ok := sys.iamUsersMap[accessKey]
|
|
if !ok || !sa.IsServiceAccount() {
|
|
return errNoSuchServiceAccount
|
|
}
|
|
|
|
// It is ok to ignore deletion error on the mapped policy
|
|
err := sys.store.deleteUserIdentity(accessKey, srvAccUser)
|
|
if err != nil {
|
|
// ignore if user is already deleted.
|
|
if err == errNoSuchUser {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
delete(sys.iamUsersMap, accessKey)
|
|
return nil
|
|
}
|
|
|
|
// SetUser - set user credentials and policy.
|
|
func (sys *IAMSys) SetUser(accessKey string, uinfo madmin.UserInfo) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
u := newUserIdentity(auth.Credentials{
|
|
AccessKey: accessKey,
|
|
SecretKey: uinfo.SecretKey,
|
|
Status: string(uinfo.Status),
|
|
})
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
cr, ok := sys.iamUsersMap[accessKey]
|
|
if cr.IsTemp() && ok {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
if err := sys.store.saveUserIdentity(accessKey, regularUser, u); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamUsersMap[accessKey] = u.Credentials
|
|
|
|
// Set policy if specified.
|
|
if uinfo.PolicyName != "" {
|
|
return sys.policyDBSet(accessKey, uinfo.PolicyName, regularUser, false)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SetUserSecretKey - sets user secret key
|
|
func (sys *IAMSys) SetUserSecretKey(accessKey string, secretKey string) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
cred, ok := sys.iamUsersMap[accessKey]
|
|
if !ok {
|
|
return errNoSuchUser
|
|
}
|
|
|
|
cred.SecretKey = secretKey
|
|
u := newUserIdentity(cred)
|
|
if err := sys.store.saveUserIdentity(accessKey, regularUser, u); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamUsersMap[accessKey] = cred
|
|
return nil
|
|
}
|
|
|
|
// GetUser - get user credentials
|
|
func (sys *IAMSys) GetUser(accessKey string) (cred auth.Credentials, ok bool) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return cred, false
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
cred, ok = sys.iamUsersMap[accessKey]
|
|
if ok && cred.IsValid() {
|
|
if cred.ParentUser != "" {
|
|
_, ok = sys.iamUsersMap[cred.ParentUser]
|
|
}
|
|
}
|
|
return cred, ok && cred.IsValid()
|
|
}
|
|
|
|
// 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(group string, members []string) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if group == "" {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
// Validate that all members exist.
|
|
for _, member := range members {
|
|
cr, ok := sys.iamUsersMap[member]
|
|
if !ok {
|
|
return errNoSuchUser
|
|
}
|
|
if cr.IsTemp() {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
}
|
|
|
|
gi, ok := sys.iamGroupsMap[group]
|
|
if !ok {
|
|
// Set group as enabled by default when it doesn't
|
|
// exist.
|
|
gi = newGroupInfo(members)
|
|
} else {
|
|
mergedMembers := append(gi.Members, members...)
|
|
uniqMembers := set.CreateStringSet(mergedMembers...).ToSlice()
|
|
gi.Members = uniqMembers
|
|
}
|
|
|
|
if err := sys.store.saveGroupInfo(group, gi); err != nil {
|
|
return err
|
|
}
|
|
|
|
sys.iamGroupsMap[group] = gi
|
|
|
|
// update user-group membership map
|
|
for _, member := range members {
|
|
gset := sys.iamUserGroupMemberships[member]
|
|
if gset == nil {
|
|
gset = set.CreateStringSet(group)
|
|
} else {
|
|
gset.Add(group)
|
|
}
|
|
sys.iamUserGroupMemberships[member] = gset
|
|
}
|
|
|
|
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(group string, members []string) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
if group == "" {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
// Validate that all members exist.
|
|
for _, member := range members {
|
|
cr, ok := sys.iamUsersMap[member]
|
|
if !ok {
|
|
return errNoSuchUser
|
|
}
|
|
if cr.IsTemp() {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
}
|
|
|
|
gi, ok := sys.iamGroupsMap[group]
|
|
if !ok {
|
|
return errNoSuchGroup
|
|
}
|
|
|
|
// Check if attempting to delete a non-empty group.
|
|
if len(members) == 0 && len(gi.Members) != 0 {
|
|
return 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 := sys.store.deleteMappedPolicy(group, regularUser, true); err != nil && err != errNoSuchPolicy {
|
|
return err
|
|
}
|
|
if err := sys.store.deleteGroupInfo(group); err != nil && err != errNoSuchGroup {
|
|
return err
|
|
}
|
|
|
|
// Delete from server memory
|
|
delete(sys.iamGroupsMap, group)
|
|
delete(sys.iamGroupPolicyMap, group)
|
|
return nil
|
|
}
|
|
|
|
// Only removing members.
|
|
s := set.CreateStringSet(gi.Members...)
|
|
d := set.CreateStringSet(members...)
|
|
gi.Members = s.Difference(d).ToSlice()
|
|
|
|
err := sys.store.saveGroupInfo(group, gi)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
sys.iamGroupsMap[group] = gi
|
|
|
|
// update user-group membership map
|
|
for _, member := range members {
|
|
gset := sys.iamUserGroupMemberships[member]
|
|
if gset == nil {
|
|
continue
|
|
}
|
|
gset.Remove(group)
|
|
sys.iamUserGroupMemberships[member] = gset
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// SetGroupStatus - enable/disabled a group
|
|
func (sys *IAMSys) SetGroupStatus(group string, enabled bool) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return errIAMActionNotAllowed
|
|
}
|
|
|
|
if group == "" {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
gi, ok := sys.iamGroupsMap[group]
|
|
if !ok {
|
|
return errNoSuchGroup
|
|
}
|
|
|
|
if enabled {
|
|
gi.Status = statusEnabled
|
|
} else {
|
|
gi.Status = statusDisabled
|
|
}
|
|
|
|
if err := sys.store.saveGroupInfo(group, gi); err != nil {
|
|
return err
|
|
}
|
|
sys.iamGroupsMap[group] = gi
|
|
return nil
|
|
}
|
|
|
|
// GetGroupDescription - builds up group description
|
|
func (sys *IAMSys) GetGroupDescription(group string) (gd madmin.GroupDesc, err error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return gd, errServerNotInitialized
|
|
}
|
|
|
|
ps, err := sys.PolicyDBGet(group, true)
|
|
if err != nil {
|
|
return gd, err
|
|
}
|
|
|
|
// A group may be mapped to at most one policy.
|
|
policy := ""
|
|
if len(ps) > 0 {
|
|
policy = ps[0]
|
|
}
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return madmin.GroupDesc{
|
|
Name: group,
|
|
Policy: policy,
|
|
}, nil
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
gi, ok := sys.iamGroupsMap[group]
|
|
if !ok {
|
|
return gd, errNoSuchGroup
|
|
}
|
|
|
|
return madmin.GroupDesc{
|
|
Name: group,
|
|
Status: gi.Status,
|
|
Members: gi.Members,
|
|
Policy: policy,
|
|
}, nil
|
|
}
|
|
|
|
// ListGroups - lists groups.
|
|
func (sys *IAMSys) ListGroups() (r []string, err error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return r, errServerNotInitialized
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
if sys.usersSysType != MinIOUsersSysType {
|
|
return nil, errIAMActionNotAllowed
|
|
}
|
|
|
|
for k := range sys.iamGroupsMap {
|
|
r = append(r, k)
|
|
}
|
|
return r, nil
|
|
}
|
|
|
|
// PolicyDBSet - sets a policy for a user or group in the PolicyDB.
|
|
func (sys *IAMSys) PolicyDBSet(name, policy string, isGroup bool) error {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return errServerNotInitialized
|
|
}
|
|
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
return sys.policyDBSet(name, policy, regularUser, isGroup)
|
|
}
|
|
|
|
// policyDBSet - sets a policy for user in the policy db. Assumes that caller
|
|
// has sys.Lock(). If policy == "", then policy mapping is removed.
|
|
func (sys *IAMSys) policyDBSet(name, policy string, userType IAMUserType, isGroup bool) error {
|
|
if name == "" {
|
|
return errInvalidArgument
|
|
}
|
|
if _, ok := sys.iamPolicyDocsMap[policy]; !ok && policy != "" {
|
|
return errNoSuchPolicy
|
|
}
|
|
|
|
if sys.usersSysType == MinIOUsersSysType {
|
|
if !isGroup {
|
|
if _, ok := sys.iamUsersMap[name]; !ok {
|
|
return errNoSuchUser
|
|
}
|
|
} else {
|
|
if _, ok := sys.iamGroupsMap[name]; !ok {
|
|
return errNoSuchGroup
|
|
}
|
|
}
|
|
}
|
|
|
|
// Handle policy mapping removal
|
|
if policy == "" {
|
|
if err := sys.store.deleteMappedPolicy(name, userType, isGroup); err != nil && err != errNoSuchPolicy {
|
|
return err
|
|
}
|
|
if !isGroup {
|
|
delete(sys.iamUserPolicyMap, name)
|
|
} else {
|
|
delete(sys.iamGroupPolicyMap, name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Handle policy mapping set/update
|
|
mp := newMappedPolicy(policy)
|
|
if err := sys.store.saveMappedPolicy(name, userType, isGroup, mp); err != nil {
|
|
return err
|
|
}
|
|
if !isGroup {
|
|
sys.iamUserPolicyMap[name] = mp
|
|
} else {
|
|
sys.iamGroupPolicyMap[name] = mp
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var iamAccountReadAccessActions = iampolicy.NewActionSet(
|
|
iampolicy.ListMultipartUploadPartsAction,
|
|
iampolicy.ListBucketMultipartUploadsAction,
|
|
iampolicy.ListBucketAction,
|
|
iampolicy.HeadBucketAction,
|
|
iampolicy.GetObjectAction,
|
|
iampolicy.GetBucketLocationAction,
|
|
|
|
// iampolicy.ListAllMyBucketsAction,
|
|
)
|
|
|
|
var iamAccountWriteAccessActions = iampolicy.NewActionSet(
|
|
iampolicy.AbortMultipartUploadAction,
|
|
iampolicy.CreateBucketAction,
|
|
iampolicy.PutObjectAction,
|
|
iampolicy.DeleteObjectAction,
|
|
iampolicy.DeleteBucketAction,
|
|
)
|
|
|
|
var iamAccountOtherAccessActions = iampolicy.NewActionSet(
|
|
iampolicy.BypassGovernanceRetentionAction,
|
|
iampolicy.PutObjectRetentionAction,
|
|
iampolicy.GetObjectRetentionAction,
|
|
iampolicy.GetObjectLegalHoldAction,
|
|
iampolicy.PutObjectLegalHoldAction,
|
|
iampolicy.GetBucketObjectLockConfigurationAction,
|
|
iampolicy.PutBucketObjectLockConfigurationAction,
|
|
|
|
iampolicy.ListenBucketNotificationAction,
|
|
|
|
iampolicy.PutBucketLifecycleAction,
|
|
iampolicy.GetBucketLifecycleAction,
|
|
|
|
iampolicy.PutBucketNotificationAction,
|
|
iampolicy.GetBucketNotificationAction,
|
|
|
|
iampolicy.PutBucketPolicyAction,
|
|
iampolicy.DeleteBucketPolicyAction,
|
|
iampolicy.GetBucketPolicyAction,
|
|
|
|
iampolicy.PutBucketEncryptionAction,
|
|
iampolicy.GetBucketEncryptionAction,
|
|
)
|
|
|
|
// GetAccountAccess iterates over all policies documents associated to a user
|
|
// and returns if the user has read and/or write access to any resource.
|
|
func (sys *IAMSys) GetAccountAccess(accountName, bucket string) (rd, wr, o bool) {
|
|
policies, err := sys.PolicyDBGet(accountName, false)
|
|
if err != nil {
|
|
return false, false, false
|
|
}
|
|
|
|
if len(policies) == 0 {
|
|
// No policy found.
|
|
return false, false, false
|
|
}
|
|
|
|
// Policies were found, evaluate all of them.
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
var availablePolicies []iampolicy.Policy
|
|
for _, pname := range policies {
|
|
p, found := sys.iamPolicyDocsMap[pname]
|
|
if found {
|
|
availablePolicies = append(availablePolicies, p)
|
|
}
|
|
}
|
|
|
|
if len(availablePolicies) == 0 {
|
|
return false, false, false
|
|
}
|
|
|
|
combinedPolicy := availablePolicies[0]
|
|
for i := 1; i < len(availablePolicies); i++ {
|
|
combinedPolicy.Statements = append(combinedPolicy.Statements,
|
|
availablePolicies[i].Statements...)
|
|
}
|
|
|
|
allActions := iampolicy.NewActionSet(iampolicy.AllActions)
|
|
for _, st := range combinedPolicy.Statements {
|
|
// Ignore if this is not an allow policy statement
|
|
if st.Effect != policy.Allow {
|
|
continue
|
|
}
|
|
// Fast calculation if there is s3:* permissions to any resource
|
|
if !st.Actions.Intersection(allActions).IsEmpty() {
|
|
rd, wr, o = true, true, true
|
|
break
|
|
}
|
|
if !st.Actions.Intersection(iamAccountReadAccessActions).IsEmpty() {
|
|
rd = true
|
|
}
|
|
if !st.Actions.Intersection(iamAccountWriteAccessActions).IsEmpty() {
|
|
wr = true
|
|
}
|
|
if !st.Actions.Intersection(iamAccountOtherAccessActions).IsEmpty() {
|
|
o = true
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// PolicyDBGet - gets policy set on a user or group. Since a user may
|
|
// be a member of multiple groups, this function returns an array of
|
|
// applicable policies (each group is mapped to at most one policy).
|
|
func (sys *IAMSys) PolicyDBGet(name string, isGroup bool) ([]string, error) {
|
|
objectAPI := newObjectLayerWithoutSafeModeFn()
|
|
if objectAPI == nil || sys == nil || sys.store == nil {
|
|
return nil, errServerNotInitialized
|
|
}
|
|
|
|
if name == "" {
|
|
return nil, errInvalidArgument
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
return sys.policyDBGet(name, isGroup)
|
|
}
|
|
|
|
// This call assumes that caller has the sys.RLock()
|
|
func (sys *IAMSys) policyDBGet(name string, isGroup bool) ([]string, error) {
|
|
if isGroup {
|
|
if _, ok := sys.iamGroupsMap[name]; !ok {
|
|
return nil, errNoSuchGroup
|
|
}
|
|
|
|
policy := sys.iamGroupPolicyMap[name]
|
|
// returned policy could be empty
|
|
if policy.Policy == "" {
|
|
return nil, nil
|
|
}
|
|
return []string{policy.Policy}, nil
|
|
}
|
|
|
|
// When looking for a user's policies, we also check if the
|
|
// user and the groups they are member of are enabled.
|
|
if u, ok := sys.iamUsersMap[name]; !ok {
|
|
return nil, errNoSuchUser
|
|
} else if u.Status == statusDisabled {
|
|
// User is disabled, so we return no policy - this
|
|
// ensures the request is denied.
|
|
return nil, nil
|
|
}
|
|
|
|
result := []string{}
|
|
policy := sys.iamUserPolicyMap[name]
|
|
// returned policy could be empty
|
|
if policy.Policy != "" {
|
|
result = append(result, policy.Policy)
|
|
}
|
|
for _, group := range sys.iamUserGroupMemberships[name].ToSlice() {
|
|
// Skip missing or disabled groups
|
|
gi, ok := sys.iamGroupsMap[group]
|
|
if !ok || gi.Status == statusDisabled {
|
|
continue
|
|
}
|
|
|
|
p, ok := sys.iamGroupPolicyMap[group]
|
|
if ok && p.Policy != "" {
|
|
result = append(result, p.Policy)
|
|
}
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
// 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, parent 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 != parent {
|
|
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 if the parent is allowed to perform this action, reject if not
|
|
parentUserPolicies, err := sys.PolicyDBGet(parent, false)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
if len(parentUserPolicies) == 0 {
|
|
return false
|
|
}
|
|
|
|
var availablePolicies []iampolicy.Policy
|
|
|
|
// Policies were found, evaluate all of them.
|
|
sys.store.rlock()
|
|
for _, pname := range parentUserPolicies {
|
|
p, found := sys.iamPolicyDocsMap[pname]
|
|
if found {
|
|
availablePolicies = append(availablePolicies, p)
|
|
}
|
|
}
|
|
sys.store.runlock()
|
|
|
|
if len(availablePolicies) == 0 {
|
|
return false
|
|
}
|
|
|
|
combinedPolicy := availablePolicies[0]
|
|
for i := 1; i < len(availablePolicies); i++ {
|
|
combinedPolicy.Statements = append(combinedPolicy.Statements,
|
|
availablePolicies[i].Statements...)
|
|
}
|
|
|
|
parentArgs := args
|
|
parentArgs.AccountName = parent
|
|
|
|
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 == "inherited-policy" {
|
|
return combinedPolicy.IsAllowed(parentArgs)
|
|
}
|
|
|
|
// Now check if we have a sessionPolicy.
|
|
spolicy, ok := args.Claims[iampolicy.SessionPolicyName]
|
|
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(context.Background(), err)
|
|
return false
|
|
}
|
|
|
|
// Policy without Version string value reject it.
|
|
if subPolicy.Version == "" {
|
|
return false
|
|
}
|
|
|
|
return combinedPolicy.IsAllowed(parentArgs) && subPolicy.IsAllowed(parentArgs)
|
|
}
|
|
|
|
// 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) bool {
|
|
// If it is an LDAP request, check that user and group
|
|
// policies allow the request.
|
|
if userIface, ok := args.Claims[ldapUser]; ok {
|
|
var user string
|
|
if u, ok := userIface.(string); ok {
|
|
user = u
|
|
} else {
|
|
return false
|
|
}
|
|
|
|
var groups []string
|
|
groupsVal := args.Claims[ldapGroups]
|
|
if g, ok := groupsVal.([]interface{}); ok {
|
|
for _, eachG := range g {
|
|
if eachGStr, ok := eachG.(string); ok {
|
|
groups = append(groups, eachGStr)
|
|
}
|
|
}
|
|
} else {
|
|
return false
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
// We look up the policy mapping directly to bypass
|
|
// users exists, group exists validations that do not
|
|
// apply here.
|
|
var policies []iampolicy.Policy
|
|
if policy, ok := sys.iamUserPolicyMap[user]; ok {
|
|
p, found := sys.iamPolicyDocsMap[policy.Policy]
|
|
if found {
|
|
policies = append(policies, p)
|
|
}
|
|
}
|
|
for _, group := range groups {
|
|
policy, ok := sys.iamGroupPolicyMap[group]
|
|
if !ok {
|
|
continue
|
|
}
|
|
p, found := sys.iamPolicyDocsMap[policy.Policy]
|
|
if found {
|
|
policies = append(policies, p)
|
|
}
|
|
}
|
|
if len(policies) == 0 {
|
|
return false
|
|
}
|
|
combinedPolicy := policies[0]
|
|
for i := 1; i < len(policies); i++ {
|
|
combinedPolicy.Statements =
|
|
append(combinedPolicy.Statements,
|
|
policies[i].Statements...)
|
|
}
|
|
return combinedPolicy.IsAllowed(args)
|
|
}
|
|
|
|
pnameSlice, ok := args.GetPolicies(iamPolicyClaimNameOpenID())
|
|
if !ok {
|
|
// When claims are set, it should have a policy claim field.
|
|
return false
|
|
}
|
|
|
|
// When claims are set, it should have a policy claim field.
|
|
if len(pnameSlice) == 0 {
|
|
return false
|
|
}
|
|
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
// If policy is available for given user, check the policy.
|
|
mp, ok := sys.iamUserPolicyMap[args.AccountName]
|
|
if !ok {
|
|
// No policy available reject.
|
|
return false
|
|
}
|
|
name := mp.Policy
|
|
|
|
if pnameSlice[0] != name {
|
|
// When claims has a policy, it should match the
|
|
// policy of args.AccountName which server remembers.
|
|
// if not reject such requests.
|
|
return false
|
|
}
|
|
|
|
// Now check if we have a sessionPolicy.
|
|
spolicy, ok := args.Claims[iampolicy.SessionPolicyName]
|
|
if ok {
|
|
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(context.Background(), err)
|
|
return false
|
|
}
|
|
|
|
// Policy without Version string value reject it.
|
|
if subPolicy.Version == "" {
|
|
return false
|
|
}
|
|
|
|
// Sub policy is set and valid.
|
|
p, ok := sys.iamPolicyDocsMap[pnameSlice[0]]
|
|
return ok && p.IsAllowed(args) && subPolicy.IsAllowed(args)
|
|
}
|
|
|
|
// Sub policy not set, this is most common since subPolicy
|
|
// is optional, use the top level policy only.
|
|
p, ok := sys.iamPolicyDocsMap[pnameSlice[0]]
|
|
return ok && p.IsAllowed(args)
|
|
}
|
|
|
|
// 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 globalPolicyOPA != nil {
|
|
ok, err := globalPolicyOPA.IsAllowed(args)
|
|
if err != nil {
|
|
logger.LogIf(context.Background(), 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, err := sys.IsTempUser(args.AccountName)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
if ok {
|
|
return sys.IsAllowedSTS(args)
|
|
}
|
|
|
|
// 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)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
if len(policies) == 0 {
|
|
// No policy found.
|
|
return false
|
|
}
|
|
|
|
// Policies were found, evaluate all of them.
|
|
sys.store.rlock()
|
|
defer sys.store.runlock()
|
|
|
|
var availablePolicies []iampolicy.Policy
|
|
for _, pname := range policies {
|
|
p, found := sys.iamPolicyDocsMap[pname]
|
|
if found {
|
|
availablePolicies = append(availablePolicies, p)
|
|
}
|
|
}
|
|
if len(availablePolicies) == 0 {
|
|
return false
|
|
}
|
|
combinedPolicy := availablePolicies[0]
|
|
for i := 1; i < len(availablePolicies); i++ {
|
|
combinedPolicy.Statements = append(combinedPolicy.Statements,
|
|
availablePolicies[i].Statements...)
|
|
}
|
|
return combinedPolicy.IsAllowed(args)
|
|
}
|
|
|
|
// Set default canned policies only if not already overridden by users.
|
|
func setDefaultCannedPolicies(policies map[string]iampolicy.Policy) {
|
|
_, ok := policies["writeonly"]
|
|
if !ok {
|
|
policies["writeonly"] = iampolicy.WriteOnly
|
|
}
|
|
_, ok = policies["readonly"]
|
|
if !ok {
|
|
policies["readonly"] = iampolicy.ReadOnly
|
|
}
|
|
_, ok = policies["readwrite"]
|
|
if !ok {
|
|
policies["readwrite"] = iampolicy.ReadWrite
|
|
}
|
|
_, ok = policies["diagnostics"]
|
|
if !ok {
|
|
policies["diagnostics"] = iampolicy.AdminDiagnostics
|
|
}
|
|
}
|
|
|
|
// buildUserGroupMemberships - builds the memberships map. IMPORTANT:
|
|
// Assumes that sys.Lock is held by caller.
|
|
func (sys *IAMSys) buildUserGroupMemberships() {
|
|
for group, gi := range sys.iamGroupsMap {
|
|
sys.updateGroupMembershipsMap(group, &gi)
|
|
}
|
|
}
|
|
|
|
// updateGroupMembershipsMap - updates the memberships map for a
|
|
// group. IMPORTANT: Assumes sys.Lock() is held by caller.
|
|
func (sys *IAMSys) updateGroupMembershipsMap(group string, gi *GroupInfo) {
|
|
if gi == nil {
|
|
return
|
|
}
|
|
for _, member := range gi.Members {
|
|
v := sys.iamUserGroupMemberships[member]
|
|
if v == nil {
|
|
v = set.CreateStringSet(group)
|
|
} else {
|
|
v.Add(group)
|
|
}
|
|
sys.iamUserGroupMemberships[member] = v
|
|
}
|
|
}
|
|
|
|
// removeGroupFromMembershipsMap - removes the group from every member
|
|
// in the cache. IMPORTANT: Assumes sys.Lock() is held by caller.
|
|
func (sys *IAMSys) removeGroupFromMembershipsMap(group string) {
|
|
for member, groups := range sys.iamUserGroupMemberships {
|
|
if !groups.Contains(group) {
|
|
continue
|
|
}
|
|
groups.Remove(group)
|
|
sys.iamUserGroupMemberships[member] = groups
|
|
}
|
|
}
|
|
|
|
// EnableLDAPSys - enable ldap system users type.
|
|
func (sys *IAMSys) EnableLDAPSys() {
|
|
sys.store.lock()
|
|
defer sys.store.unlock()
|
|
|
|
sys.usersSysType = LDAPUsersSysType
|
|
}
|
|
|
|
// NewIAMSys - creates new config system object.
|
|
func NewIAMSys() *IAMSys {
|
|
return &IAMSys{
|
|
usersSysType: MinIOUsersSysType,
|
|
iamUsersMap: make(map[string]auth.Credentials),
|
|
iamPolicyDocsMap: make(map[string]iampolicy.Policy),
|
|
iamUserPolicyMap: make(map[string]MappedPolicy),
|
|
iamGroupsMap: make(map[string]GroupInfo),
|
|
iamUserGroupMemberships: make(map[string]set.StringSet),
|
|
}
|
|
}
|
|
|