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handler.go
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handler.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells 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.
*
* Pydio Cells 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 Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package grpc
import (
"context"
"encoding/json"
"fmt"
"path"
"sort"
"strings"
"sync"
"time"
"github.com/golang/protobuf/ptypes"
"github.com/golang/protobuf/ptypes/any"
"github.com/micro/go-micro/client"
"github.com/micro/go-micro/errors"
"github.com/patrickmn/go-cache"
"go.uber.org/zap"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/proto/idm"
"github.com/pydio/cells/common/proto/jobs"
"github.com/pydio/cells/common/proto/tree"
"github.com/pydio/cells/common/registry"
servicecontext "github.com/pydio/cells/common/service/context"
service "github.com/pydio/cells/common/service/proto"
context2 "github.com/pydio/cells/common/utils/context"
"github.com/pydio/cells/common/utils/permissions"
"github.com/pydio/cells/idm/user"
"github.com/pydio/cells/scheduler/tasks"
)
var (
defaultPolicies = []*service.ResourcePolicy{
{Subject: "profile:standard", Action: service.ResourcePolicyAction_READ, Effect: service.ResourcePolicy_allow},
{Subject: "profile:admin", Action: service.ResourcePolicyAction_WRITE, Effect: service.ResourcePolicy_allow},
}
autoAppliesCache *cache.Cache
)
// ByAge implements sort.Interface for []Person based on
// the Age field.
type ByOverride []*idm.Role
func (a ByOverride) Len() int { return len(a) }
func (a ByOverride) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a ByOverride) Less(i, j int) bool { return !a[i].ForceOverride && a[j].ForceOverride }
// Handler definition
type Handler struct{}
// BindUser binds a user with login/password
func (h *Handler) BindUser(ctx context.Context, req *idm.BindUserRequest, resp *idm.BindUserResponse) error {
if servicecontext.GetDAO(ctx) == nil {
return fmt.Errorf("no DAO found, wrong initialization")
}
dao := servicecontext.GetDAO(ctx).(user.DAO)
user, err := dao.Bind(req.UserName, req.Password)
if err != nil {
return err
}
resp.User = user
resp.User.Password = ""
return nil
}
// CreateUser adds or creates a user or a group in the underlying database.
func (h *Handler) CreateUser(ctx context.Context, req *idm.CreateUserRequest, resp *idm.CreateUserResponse) error {
if servicecontext.GetDAO(ctx) == nil {
return fmt.Errorf("no DAO found, wrong initialization")
}
dao := servicecontext.GetDAO(ctx).(user.DAO)
passChange := req.User.Password
// Create or update user
newUser, createdNodes, err := dao.Add(req.User)
if err != nil {
log.Logger(ctx).Error("cannot put user "+req.User.Login, req.User.ZapUuid(), zap.Error(err))
return err
}
out := newUser.(*idm.User)
if passChange != "" {
// Check if it is a "force pass change operation".
ctxLogin, _ := permissions.FindUserNameInContext(ctx)
if l, ok := out.Attributes["locks"]; ok && strings.Contains(l, "pass_change") && ctxLogin == out.Login {
if req.User.OldPassword == out.Password {
return fmt.Errorf("new password is the same as the old password, please use a different one")
}
var locks, newLocks []string
json.Unmarshal([]byte(l), &locks)
for _, lock := range locks {
if lock != "pass_change" {
newLocks = append(newLocks, lock)
}
}
marsh, _ := json.Marshal(newLocks)
out.Attributes["locks"] = string(marsh)
if _, _, e := dao.Add(out); e == nil {
log.Logger(ctx).Info("user "+req.User.Login+" successfully updated his password", req.User.ZapUuid())
}
}
}
out.Password = ""
resp.User = out
if len(req.User.Policies) == 0 {
var userPolicies []*service.ResourcePolicy
userPolicies = append(userPolicies, defaultPolicies...)
if !req.User.IsGroup {
// A user must be able to edit his own profile!
userPolicies = append(userPolicies, &service.ResourcePolicy{
Subject: "user:" + out.Login,
Action: service.ResourcePolicyAction_WRITE,
Effect: service.ResourcePolicy_allow,
})
}
req.User.Policies = userPolicies
}
log.Logger(ctx).Debug("ADDING POLICIES NOW", zap.Any("p", req.User.Policies), zap.Any("createdNodes", createdNodes))
if err := dao.AddPolicies(len(createdNodes) == 0, out.Uuid, req.User.Policies); err != nil {
return err
}
for _, g := range createdNodes {
if g.Uuid != out.Uuid && g.Type == tree.NodeType_COLLECTION {
// Groups where created in the process, add default policies on them
log.Logger(ctx).Info("Setting Default Policies on groups that were created automatically", zap.Any("groupPath", g.Path))
if err := dao.AddPolicies(false, g.Uuid, defaultPolicies); err != nil {
return err
}
}
}
if len(createdNodes) == 0 {
// Propagate creation event
client.Publish(ctx, client.NewPublication(common.TOPIC_IDM_EVENT, &idm.ChangeEvent{
Type: idm.ChangeEventType_UPDATE,
User: out,
}))
if out.IsGroup {
log.Auditer(ctx).Info(
fmt.Sprintf("Updated group [%s]", out.GroupLabel),
log.GetAuditId(common.AUDIT_GROUP_UPDATE),
out.ZapUuid(),
)
} else {
log.Auditer(ctx).Info(
fmt.Sprintf("Updated user [%s]", out.Login),
log.GetAuditId(common.AUDIT_USER_UPDATE),
out.ZapUuid(),
)
}
} else {
// Propagate creation event
client.Publish(ctx, client.NewPublication(common.TOPIC_IDM_EVENT, &idm.ChangeEvent{
Type: idm.ChangeEventType_CREATE,
User: out,
}))
if out.IsGroup {
log.Auditer(ctx).Info(
fmt.Sprintf("Created group [%s]", out.GroupPath),
log.GetAuditId(common.AUDIT_GROUP_CREATE),
out.ZapUuid(),
)
} else {
path := "/"
if len(out.GroupPath) > 1 {
path = out.GroupPath + "/"
}
log.Auditer(ctx).Info(
fmt.Sprintf("Created user [%s%s]", path, out.Login),
log.GetAuditId(common.AUDIT_USER_CREATE),
out.ZapUuid(),
zap.String("GroupPath", out.GroupPath),
)
}
}
return nil
}
// DeleteUser from database
func (h *Handler) DeleteUser(ctx context.Context, req *idm.DeleteUserRequest, response *idm.DeleteUserResponse) error {
if servicecontext.GetDAO(ctx) == nil {
return fmt.Errorf("no DAO found, wrong initialization")
}
usersChan := make(chan *idm.User)
done := make(chan bool)
var autoClient *tasks.ReconnectingClient
var task *jobs.Task
var taskChan chan interface{}
uName, _ := permissions.FindUserNameInContext(ctx)
if tU, ok := context2.CanonicalMeta(ctx, servicecontext.ContextMetaTaskUuid); ok {
jU, _ := context2.CanonicalMeta(ctx, servicecontext.ContextMetaJobUuid)
task = &jobs.Task{
JobID: jU,
ID: tU,
TriggerOwner: uName,
Status: jobs.TaskStatus_Running,
HasProgress: true,
}
taskChan = make(chan interface{})
autoClient = tasks.NewTaskReconnectingClient(ctx)
autoClient.StartListening(taskChan)
defer autoClient.Stop()
}
dao := servicecontext.GetDAO(ctx).(user.DAO)
i, err := dao.Count(req.Query, true)
if err != nil {
return err
}
total := float32(i)
wg := &sync.WaitGroup{}
wg.Add(1)
go func() {
defer wg.Done()
var crt float32
for {
select {
case deleted := <-usersChan:
if deleted != nil {
dao.DeletePoliciesForResource(deleted.Uuid)
if deleted.IsGroup {
dao.DeletePoliciesBySubject(fmt.Sprintf("role:%s", deleted.Uuid))
} else {
dao.DeletePoliciesBySubject(fmt.Sprintf("user:%s", deleted.Uuid))
}
// Propagate deletion event
client.Publish(ctx, client.NewPublication(common.TOPIC_IDM_EVENT, &idm.ChangeEvent{
Type: idm.ChangeEventType_DELETE,
User: deleted,
}))
var msg string
if deleted.IsGroup {
msg = fmt.Sprintf("Deleted group [%s]", path.Join(deleted.GroupPath, deleted.GroupLabel))
log.Auditer(ctx).Info(msg, log.GetAuditId(common.AUDIT_GROUP_DELETE), deleted.ZapUuid())
} else {
msg = fmt.Sprintf("Deleted user [%s] from [%s]", deleted.Login, deleted.GroupPath)
log.Auditer(ctx).Info(msg, log.GetAuditId(common.AUDIT_USER_DELETE), deleted.ZapUuid())
}
crt++
percent := crt / total
if task != nil {
task.Progress = percent
task.StatusMessage = msg
task.Status = jobs.TaskStatus_Running
log.TasksLogger(ctx).Info(msg)
taskChan <- task
}
}
case <-done:
if task != nil {
task.Progress = 1
task.StatusMessage = "Background delete complete"
task.EndTime = int32(time.Now().Unix())
task.Status = jobs.TaskStatus_Finished
taskChan <- task
}
return
}
}
}()
numRows, err := dao.Del(req.Query, usersChan)
close(done)
close(usersChan)
if err != nil {
if task != nil {
task.Progress = 1
task.StatusMessage = err.Error()
task.Status = jobs.TaskStatus_Error
taskChan <- task
}
return err
}
wg.Wait()
if taskChan != nil {
close(taskChan)
}
response.RowsDeleted = numRows
return nil
}
// SearchUser in database
func (h *Handler) SearchUser(ctx context.Context, request *idm.SearchUserRequest, response idm.UserService_SearchUserStream) error {
if servicecontext.GetDAO(ctx) == nil {
return fmt.Errorf("no DAO found, wrong initialization")
}
dao := servicecontext.GetDAO(ctx).(user.DAO)
autoApplies, er := h.loadAutoAppliesRoles(ctx)
if er != nil {
return er
}
usersGroups := new([]interface{})
if err := dao.Search(request.Query, usersGroups); err != nil {
return err
}
var e error
for _, in := range *usersGroups {
if usr, ok := in.(*idm.User); ok {
usr.Password = ""
if usr.Policies, e = dao.GetPoliciesForResource(usr.Uuid); e != nil {
log.Logger(ctx).Error("cannot load policies for user "+usr.Uuid, zap.Error(e))
continue
}
h.applyAutoApplies(usr, autoApplies)
response.Send(&idm.SearchUserResponse{User: usr})
} else {
return errors.InternalServerError(common.SERVICE_USER, "wrong type received, should have been idm.User or idm.Group")
}
}
response.Close()
return nil
}
// CountUser in database
func (h *Handler) CountUser(ctx context.Context, request *idm.SearchUserRequest, response *idm.CountUserResponse) error {
if servicecontext.GetDAO(ctx) == nil {
return fmt.Errorf("no DAO found, wrong initialization")
}
dao := servicecontext.GetDAO(ctx).(user.DAO)
total, err := dao.Count(request.Query)
if err != nil {
return err
}
response.Count = int32(total)
return nil
}
// StreamUser from database
func (h *Handler) StreamUser(ctx context.Context, streamer idm.UserService_StreamUserStream) error {
if servicecontext.GetDAO(ctx) == nil {
return fmt.Errorf("no DAO found, wrong initialization")
}
dao := servicecontext.GetDAO(ctx).(user.DAO)
defer streamer.Close()
autoApplies, e := h.loadAutoAppliesRoles(ctx)
if e != nil {
return e
}
for {
incoming, err := streamer.Recv()
if incoming == nil || err != nil {
break
}
users := new([]interface{})
if err := dao.Search(incoming.Query, users); err != nil {
return err
}
for _, in := range *users {
if usr, ok := in.(*idm.User); ok {
usr.Password = ""
h.applyAutoApplies(usr, autoApplies)
streamer.Send(&idm.SearchUserResponse{User: usr})
}
}
streamer.Send(nil)
}
return nil
}
// applyAutoApplies tries to find if some roles must be added to this user.
// If necessary, it adds role to the list AFTER the groupRoles and before other roles.
func (h *Handler) applyAutoApplies(usr *idm.User, autoApplies map[string][]*idm.Role) {
// Apply automatically role for profile
if usr.Attributes != nil {
if profile, ok := usr.Attributes[idm.UserAttrProfile]; ok {
// For shared users, disable group roles inheritance
if profile == common.PYDIO_PROFILE_SHARED || profile == common.PYDIO_PROFILE_ANON {
var newRoles []*idm.Role
for _, role := range usr.Roles {
if !role.GroupRole {
newRoles = append(newRoles, role)
}
}
usr.Roles = newRoles
}
if len(autoApplies) == 0 {
return
}
// Apply AutoApply role if any
if applies, has := autoApplies[profile]; has {
var newRoles []*idm.Role
var added = false
for _, crt := range usr.Roles {
if !added && !crt.GroupRole {
newRoles = append(newRoles, applies...)
added = true
}
newRoles = append(newRoles, crt)
}
usr.Roles = newRoles
}
}
}
// Sort so that ForceOverride are at the bottom of the list
var head, body, foot []*idm.Role
for _, r := range usr.Roles {
if r.GroupRole {
head = append(head, r)
} else if r.UserRole {
foot = append(foot, r)
} else {
body = append(body, r)
}
}
sort.Sort(ByOverride(body))
all := append(head, body...)
all = append(all, foot...)
usr.Roles = all
}
// LoadAutoAppliesRoles performs a request to the Roles service to find all roles that have a non-empty list
// of "AutoApplies" : these roles must be applied to user with a given profile.
func (h *Handler) loadAutoAppliesRoles(ctx context.Context) (autoApplies map[string][]*idm.Role, err error) {
// Check if it's not already cached
if autoAppliesCache != nil {
if values, ok := autoAppliesCache.Get("autoApplies"); ok {
var conv bool
if autoApplies, conv = values.(map[string][]*idm.Role); conv {
return
}
}
}
autoApplies = make(map[string][]*idm.Role)
roleCli := idm.NewRoleServiceClient(registry.GetClient(common.SERVICE_ROLE))
q, _ := ptypes.MarshalAny(&idm.RoleSingleQuery{HasAutoApply: true})
stream, e := roleCli.SearchRole(ctx, &idm.SearchRoleRequest{Query: &service.Query{SubQueries: []*any.Any{q}}})
if e != nil {
return autoApplies, e
}
defer stream.Close()
for {
resp, e := stream.Recv()
if e != nil {
break
}
applies := resp.Role.AutoApplies
for _, profileId := range applies {
var data []*idm.Role
var ok bool
if data, ok = autoApplies[profileId]; !ok {
data = []*idm.Role{}
}
data = append(data, resp.Role)
autoApplies[profileId] = data
}
}
// Save to cache
if autoAppliesCache == nil {
autoAppliesCache = cache.New(10*time.Second, 20*time.Second)
}
autoAppliesCache.Set("autoApplies", autoApplies, 0) // 0 means use cache default
return
}