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authfront-login-middlewares.go
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authfront-login-middlewares.go
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/*
* Copyright (c) 2021. 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 modifiers
import (
"context"
"fmt"
"net/http"
"strconv"
"time"
restful "github.com/emicklei/go-restful/v3"
"github.com/gorilla/sessions"
"go.uber.org/zap"
"google.golang.org/protobuf/types/known/anypb"
"github.com/pydio/cells/v4/common"
"github.com/pydio/cells/v4/common/broker"
"github.com/pydio/cells/v4/common/client/grpc"
"github.com/pydio/cells/v4/common/log"
"github.com/pydio/cells/v4/common/proto/idm"
"github.com/pydio/cells/v4/common/proto/rest"
"github.com/pydio/cells/v4/common/proto/service"
"github.com/pydio/cells/v4/common/service/errors"
"github.com/pydio/cells/v4/common/service/frontend"
"github.com/pydio/cells/v4/common/utils/i18n"
json "github.com/pydio/cells/v4/common/utils/jsonx"
"github.com/pydio/cells/v4/common/utils/permissions"
)
// LoginSuccessWrapper wraps functionalities after user was successfully logged in
func LoginSuccessWrapper(middleware frontend.AuthMiddleware) frontend.AuthMiddleware {
return func(req *restful.Request, rsp *restful.Response, in *frontend.FrontSessionWithRuntimeCtx, out *rest.FrontSessionResponse, session *sessions.Session) error {
if a, ok := in.AuthInfo["type"]; !ok || a != "credentials" && a != "authorization_code" { // Ignore this middleware
return middleware(req, rsp, in, out, session)
}
// BEFORE MIDDLEWARE
// MIDDLEWARE
err := middleware(req, rsp, in, out, session)
if err != nil {
return err
}
// AFTER MIDDLEWARE
// retrieving user
username, ok := in.AuthInfo["login"]
if !ok {
return errors.New("user.not_found", "User id not found", http.StatusNotFound)
}
ctx := req.Request.Context()
// Searching user for attributes
user, err := permissions.SearchUniqueUser(ctx, username, "")
if err != nil {
return err
}
// If user is "hidden", he is not allowed to log on the main interface
if user.Attributes != nil {
_, mini := session.Values["minisite"]
if user.IsHidden() && !mini {
log.Auditer(ctx).Error(
"Hidden user ["+user.Login+"] tried to log in on main interface",
log.GetAuditId(common.AuditLoginPolicyDenial),
zap.String(common.KeyUserUuid, user.Uuid),
)
log.Logger(ctx).Error("Denied login for hidden user " + user.Login + " on main interface")
return errors.Unauthorized("hidden.user.nominisite", "You are not allowed to log in to this interface")
}
}
// Checking user is locked
if permissions.IsUserLocked(user) {
log.Auditer(ctx).Error(
"Locked user ["+user.Login+"] tried to log in.",
log.GetAuditId(common.AuditLoginPolicyDenial),
zap.String(common.KeyUserUuid, user.Uuid),
)
log.Logger(ctx).Error("lock denies login for "+user.Login, zap.Error(fmt.Errorf("blocked login")))
return errors.Unauthorized(common.ServiceUser, "User "+user.Login+" has been blocked. Contact your sysadmin.")
}
// Reset failed connections
if user.Attributes != nil {
if _, ok := user.Attributes["failedConnections"]; ok {
log.Logger(ctx).Info("[WrapWithUserLocks] Resetting user failedConnections", user.ZapLogin())
userClient := idm.NewUserServiceClient(grpc.GetClientConnFromCtx(in.RuntimeCtx, common.ServiceUser))
delete(user.Attributes, "failedConnections")
userClient.CreateUser(ctx, &idm.CreateUserRequest{User: user})
}
}
// Checking policies
cli := idm.NewPolicyEngineServiceClient(grpc.GetClientConnFromCtx(in.RuntimeCtx, common.ServicePolicy))
policyContext := make(map[string]string)
permissions.PolicyContextFromMetadata(policyContext, ctx)
subjects := permissions.PolicyRequestSubjectsFromUser(user)
// Check all subjects, if one has deny return false
policyRequest := &idm.PolicyEngineRequest{
Subjects: subjects,
Resource: "oidc",
Action: "login",
Context: policyContext,
}
if resp, err := cli.IsAllowed(ctx, policyRequest); err != nil || !resp.Allowed {
log.Auditer(ctx).Error(
"Policy denied login to ["+user.Login+"]",
log.GetAuditId(common.AuditLoginPolicyDenial),
zap.String(common.KeyUserUuid, user.Uuid),
zap.Any(common.KeyPolicyRequest, policyRequest),
zap.Error(err),
)
log.Logger(ctx).Error("policy denies login for request", zap.Any(common.KeyPolicyRequest, policyRequest), zap.Error(err))
return errors.Unauthorized(common.ServiceUser, "User "+user.Login+" is not authorized to log in")
}
if lang, ok := in.AuthInfo["lang"]; ok {
if _, o := i18n.AvailableLanguages[lang]; o {
aclClient := idm.NewACLServiceClient(grpc.GetClientConnFromCtx(in.RuntimeCtx, common.ServiceAcl))
// Remove previous value if any
delQ, _ := anypb.New(&idm.ACLSingleQuery{RoleIDs: []string{user.GetUuid()}, Actions: []*idm.ACLAction{{Name: "parameter:core.conf:lang"}}, WorkspaceIDs: []string{"PYDIO_REPO_SCOPE_ALL"}})
send, can := context.WithTimeout(ctx, 500*time.Millisecond)
defer can()
aclClient.DeleteACL(send, &idm.DeleteACLRequest{Query: &service.Query{SubQueries: []*anypb.Any{delQ}}})
// Insert new ACL with language value
_, e := aclClient.CreateACL(send, &idm.CreateACLRequest{ACL: &idm.ACL{
Action: &idm.ACLAction{Name: "parameter:core.conf:lang", Value: lang},
RoleID: user.GetUuid(),
WorkspaceID: "PYDIO_REPO_SCOPE_ALL",
}})
if e != nil {
log.Logger(ctx).Error("Cannot update language for user", user.ZapLogin(), zap.String("lang", lang), zap.Error(e))
} else {
log.Logger(ctx).Info("Updated language for "+user.GetLogin()+" to "+lang, user.ZapLogin(), zap.String("lang", lang))
}
}
}
broker.MustPublish(ctx, common.TopicIdmEvent, &idm.ChangeEvent{
Type: idm.ChangeEventType_LOGIN,
User: user,
})
return nil
}
}
// LoginFailedWrapper wraps functionalities after user failed to log in
func LoginFailedWrapper(middleware frontend.AuthMiddleware) frontend.AuthMiddleware {
return func(req *restful.Request, rsp *restful.Response, in *frontend.FrontSessionWithRuntimeCtx, out *rest.FrontSessionResponse, session *sessions.Session) error {
if a, ok := in.AuthInfo["type"]; !ok || a != "credentials" && a != "external" { // Ignore this middleware
return middleware(req, rsp, in, out, session)
}
// MIDDLEWARE
err := middleware(req, rsp, in, out, session)
if err == nil {
return nil
}
//fmt.Println("Login failed with ", err)
ctx := req.Request.Context()
username := in.AuthInfo["login"]
const maxFailedLogins = 10
// Searching user for attributes
user, _ := permissions.SearchUniqueUser(ctx, username, "")
if user == nil {
return errors.New("login.failed", "Login failed", http.StatusUnauthorized)
}
// double check if user was already locked to reduce work load
if permissions.IsUserLocked(user) {
msg := fmt.Sprintf("locked user %s is still trying to connect", user.GetLogin())
log.Logger(ctx).Warn(msg, user.ZapLogin())
return errors.New("user.locked", "User is locked - Please contact your admin", http.StatusUnauthorized)
}
var failedInt int64
if user.Attributes == nil {
user.Attributes = make(map[string]string)
}
if failed, ok := user.Attributes["failedConnections"]; ok {
failedInt, _ = strconv.ParseInt(failed, 10, 32)
}
failedInt++
user.Attributes["failedConnections"] = fmt.Sprintf("%d", failedInt)
hardLock := false
if failedInt >= maxFailedLogins {
// Set lock via attributes
var locks []string
if l, ok := user.Attributes["locks"]; ok {
var existingLocks []string
if e := json.Unmarshal([]byte(l), &existingLocks); e == nil {
for _, lock := range existingLocks {
if lock != "logout" {
locks = append(locks, lock)
}
}
}
}
locks = append(locks, "logout")
data, _ := json.Marshal(locks)
user.Attributes["locks"] = string(data)
msg := fmt.Sprintf("Locked user [%s] after %d failed connections", user.GetLogin(), maxFailedLogins)
log.Logger(ctx).Error(msg, user.ZapLogin())
log.Auditer(ctx).Error(
msg,
log.GetAuditId(common.AuditLockUser),
user.ZapLogin(),
zap.String(common.KeyUserUuid, user.GetUuid()),
)
hardLock = true
}
log.Logger(ctx).Debug(fmt.Sprintf("[WrapWithUserLocks] Updating failed connection number for user [%s]", user.GetLogin()), user.ZapLogin())
userClient := idm.NewUserServiceClient(grpc.GetClientConnFromCtx(in.RuntimeCtx, common.ServiceUser))
if _, e := userClient.CreateUser(ctx, &idm.CreateUserRequest{User: user}); e != nil {
log.Logger(ctx).Error("could not store failedConnection for user", zap.Error(e))
}
// Replacing error not to give any hint
if hardLock {
return errors.New("user.locked", "User is locked - Please contact your admin", http.StatusUnauthorized)
} else {
return errors.New("login.failed", "Login failed", http.StatusUnauthorized)
}
}
}