865578666

Build Type

gitlab-ci

Committed by Peter Grzybowski

Commit Message

chore: update last check-in on successful auth

Pull Request Pull Request #645: chore: update last check-in on successful auth

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89.34

/devauth/devauth.go

// Copyright 2023 Northern.tech AS
//
//        Licensed under the Apache License, Version 2.0 (the "License");
//        you may not use this file except in compliance with the License.
//        You may obtain a copy of the License at
//
//            http://www.apache.org/licenses/LICENSE-2.0
//
//        Unless required by applicable law or agreed to in writing, software
//        distributed under the License is distributed on an "AS IS" BASIS,
//        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//        See the License for the specific language governing permissions and
//        limitations under the License.
package devauth

import (
        "context"
        "crypto/sha256"
        "encoding/json"
        "fmt"
        "net/http"
        "strings"
        "time"

        "github.com/mendersoftware/go-lib-micro/addons"
        "github.com/mendersoftware/go-lib-micro/apiclient"
        ctxhttpheader "github.com/mendersoftware/go-lib-micro/context/httpheader"
        "github.com/mendersoftware/go-lib-micro/identity"
        "github.com/mendersoftware/go-lib-micro/log"
        "github.com/mendersoftware/go-lib-micro/mongo/oid"
        "github.com/mendersoftware/go-lib-micro/plan"
        "github.com/mendersoftware/go-lib-micro/ratelimits"
        "github.com/mendersoftware/go-lib-micro/requestid"
        mstore "github.com/mendersoftware/go-lib-micro/store"
        "github.com/pkg/errors"
        "go.mongodb.org/mongo-driver/bson"

        "github.com/mendersoftware/deviceauth/access"
        "github.com/mendersoftware/deviceauth/cache"
        "github.com/mendersoftware/deviceauth/client/inventory"
        "github.com/mendersoftware/deviceauth/client/orchestrator"
        "github.com/mendersoftware/deviceauth/client/tenant"
        "github.com/mendersoftware/deviceauth/jwt"
        "github.com/mendersoftware/deviceauth/model"
        "github.com/mendersoftware/deviceauth/store"
        "github.com/mendersoftware/deviceauth/store/mongo"
        "github.com/mendersoftware/deviceauth/utils"
        uto "github.com/mendersoftware/deviceauth/utils/to"
)

const (
        MsgErrDevAuthUnauthorized = "dev auth: unauthorized"
        MsgErrDevAuthBadRequest   = "dev auth: bad request"
)

var (
        ErrDevAuthUnauthorized   = errors.New(MsgErrDevAuthUnauthorized)
        ErrDevIdAuthIdMismatch   = errors.New("dev auth: dev ID and auth ID mismatch")
        ErrMaxDeviceCountReached = errors.New("maximum number of accepted devices reached")
        ErrDeviceExists          = errors.New("device already exists")
        ErrDeviceNotFound        = errors.New("device not found")
        ErrDevAuthBadRequest     = errors.New(MsgErrDevAuthBadRequest)

        ErrInvalidDeviceID  = errors.New("invalid device ID type")
        ErrInvalidAuthSetID = errors.New("auth set id is not a valid ID")
)

func IsErrDevAuthUnauthorized(e error) bool {
        return strings.HasPrefix(e.Error(), MsgErrDevAuthUnauthorized)
}

func MakeErrDevAuthUnauthorized(e error) error {
        return errors.Wrap(e, MsgErrDevAuthUnauthorized)
}

func IsErrDevAuthBadRequest(e error) bool {
        return strings.HasPrefix(e.Error(), MsgErrDevAuthBadRequest)
}

func MakeErrDevAuthBadRequest(e error) error {
        return errors.Wrap(e, MsgErrDevAuthBadRequest)
}

// helper for obtaining API clients
type ApiClientGetter func() apiclient.HttpRunner

func simpleApiClientGetter() apiclient.HttpRunner {
        return &apiclient.HttpApi{}
}

// this device auth service interface
//
//go:generate ../utils/mockgen.sh
type App interface {
        HealthCheck(ctx context.Context) error
        SubmitAuthRequest(ctx context.Context, r *model.AuthReq) (string, error)

        GetDevices(
                ctx context.Context,
                skip,
                limit uint,
                filter model.DeviceFilter,
        ) ([]model.Device, error)
        GetDevice(ctx context.Context, dev_id string) (*model.Device, error)
        DecommissionDevice(ctx context.Context, dev_id string) error
        DeleteDevice(ctx context.Context, dev_id string) error
        DeleteAuthSet(ctx context.Context, dev_id string, auth_id string) error
        AcceptDeviceAuth(ctx context.Context, dev_id string, auth_id string) error
        RejectDeviceAuth(ctx context.Context, dev_id string, auth_id string) error
        ResetDeviceAuth(ctx context.Context, dev_id string, auth_id string) error
        PreauthorizeDevice(ctx context.Context, req *model.PreAuthReq) (*model.Device, error)

        RevokeToken(ctx context.Context, tokenID string) error
        VerifyToken(ctx context.Context, token string) error
        DeleteTokens(ctx context.Context, tenantID, deviceID string) error

        SetTenantLimit(ctx context.Context, tenant_id string, limit model.Limit) error
        DeleteTenantLimit(ctx context.Context, tenant_id string, limit string) error

        GetLimit(ctx context.Context, name string) (*model.Limit, error)
        GetTenantLimit(ctx context.Context, name, tenant_id string) (*model.Limit, error)

        GetDevCountByStatus(ctx context.Context, status string) (int, error)

        ProvisionTenant(ctx context.Context, tenant_id string) error

        GetTenantDeviceStatus(ctx context.Context, tenantId, deviceId string) (*model.Status, error)
}

type DevAuth struct {
        db           store.DataStore
        invClient    inventory.Client
        cOrch        orchestrator.ClientRunner
        cTenant      tenant.ClientRunner
        jwt          jwt.Handler
        clientGetter ApiClientGetter
        verifyTenant bool
        config       Config
        cache        cache.Cache
        clock        utils.Clock
        checker      access.Checker
}

type Config struct {
        // token issuer
        Issuer string
        // token expiration time
        ExpirationTime int64
        // Default tenant token to use when the client supplies none. Can be
        // empty
        DefaultTenantToken string
        InventoryAddr      string

        EnableReporting bool
        HaveAddons      bool
}

func NewDevAuth(d store.DataStore, co orchestrator.ClientRunner,
        jwt jwt.Handler, config Config) *DevAuth {
        // initialize checker using an empty merge (returns nil on validate)
        checker := access.Merge()
        if config.HaveAddons {
                checker = access.NewAddonChecker()
        }

        return &DevAuth{
                db:           d,
                invClient:    inventory.NewClient(config.InventoryAddr, false),
                cOrch:        co,
                jwt:          jwt,
                clientGetter: simpleApiClientGetter,
                verifyTenant: false,
                config:       config,
                clock:        utils.NewClock(),
                checker:      checker,
        }
}

func (d *DevAuth) HealthCheck(ctx context.Context) error {
        err := d.db.Ping(ctx)
        if err != nil {
                return errors.Wrap(err, "error reaching MongoDB")
        }
        err = d.invClient.CheckHealth(ctx)
        if err != nil {
                return errors.Wrap(err, "Inventory service unhealthy")
        }
        err = d.cOrch.CheckHealth(ctx)
        if err != nil {
                return errors.Wrap(err, "Workflows service unhealthy")
        }
        if d.verifyTenant {
                err = d.cTenant.CheckHealth(ctx)
                if err != nil {
                        return errors.Wrap(err, "Tenantadm service unhealthy")
                }
        }
        return nil
}

func (d *DevAuth) setDeviceIdentity(ctx context.Context, dev *model.Device, tenantId string) error {
        attributes := make([]model.DeviceAttribute, len(dev.IdDataStruct))
        i := 0
        for name, value := range dev.IdDataStruct {
                if name == "status" {
                        //we have to forbid the client to override attribute status in identity scope
                        //since it stands for status of a device (as in: accepted, rejected, preauthorized)
                        continue
                }
                attribute := model.DeviceAttribute{
                        Name:        name,
                        Description: nil,
                        Value:       value,
                        Scope:       "identity",
                }
                attributes[i] = attribute
                i++
        }
        attrJson, err := json.Marshal(attributes)
        if err != nil {
                return errors.New("internal error: cannot marshal attributes into json")
        }
        if err := d.cOrch.SubmitUpdateDeviceInventoryJob(
                ctx,
                orchestrator.UpdateDeviceInventoryReq{
                        RequestId:  requestid.FromContext(ctx),
                        TenantId:   tenantId,
                        DeviceId:   dev.Id,
                        Scope:      "identity",
                        Attributes: string(attrJson),
                }); err != nil {
                return errors.Wrap(err, "failed to start device inventory update job")
        }
        if d.config.EnableReporting {
                if err := d.cOrch.SubmitReindexReporting(ctx, string(dev.Id)); err != nil {
                        return errors.Wrap(err, "reindex reporting job error")
                }
        }
        return nil
}

func (d *DevAuth) getDeviceFromAuthRequest(
        ctx context.Context,
        r *model.AuthReq,
) (*model.Device, error) {
        dev := model.NewDevice("", r.IdData, r.PubKey)

        l := log.FromContext(ctx)

        idDataStruct, idDataSha256, err := parseIdData(r.IdData)
        if err != nil {
                return nil, MakeErrDevAuthBadRequest(err)
        }

        dev.IdDataStruct = idDataStruct
        dev.IdDataSha256 = idDataSha256

        // record device
        err = d.db.AddDevice(ctx, *dev)
        addDeviceErr := err
        if err != nil && err != store.ErrObjectExists {
                l.Errorf("failed to add/find device: %v", err)
                return nil, err
        }

        // either the device was added or it was already present, in any case,
        // pull it from DB
        dev, err = d.db.GetDeviceByIdentityDataHash(ctx, idDataSha256)
        if err != nil {
                l.Error("failed to find device but could not add either")
                return nil, errors.New("failed to locate device")
        }

        idData := identity.FromContext(ctx)
        tenantId := ""
        if idData != nil {
                tenantId = idData.Tenant
        }
        if addDeviceErr != store.ErrObjectExists {
                if err := d.setDeviceIdentity(ctx, dev, tenantId); err != nil {
                        return nil, err
                }
        }

        // check if the device is in the decommissioning state
        if dev.Decommissioning {
                l.Warnf("Device %s in the decommissioning state.", dev.Id)
                return nil, ErrDevAuthUnauthorized
        }

        return dev, nil
}

func (d *DevAuth) signToken(ctx context.Context) jwt.SignFunc {
        return func(t *jwt.Token) (string, error) {
                return d.jwt.ToJWT(t)
        }
}

// tenantWithContext will update `ctx` with tenant related data
func tenantWithContext(ctx context.Context, tenantToken string) (context.Context, error) {
        ident, err := identity.ExtractIdentity(tenantToken)
        if err != nil {
                return nil, errors.Wrap(err, "failed to extract identity from tenant token")
        }

        // update context to store the identity of the caller
        ctx = identity.WithContext(ctx, &ident)

        // setup authorization header so that outgoing requests are done for
        // *this* tenant
        ctx = ctxhttpheader.WithContext(ctx,
                http.Header{
                        "Authorization": []string{fmt.Sprintf("Bearer %s", tenantToken)},
                },
                "Authorization")

        return ctx, nil
}

func (d *DevAuth) doVerifyTenant(ctx context.Context, token string) (*tenant.Tenant, error) {
        t, err := d.cTenant.VerifyToken(ctx, token)

        if err != nil {
                if tenant.IsErrTokenVerificationFailed(err) {
                        return nil, MakeErrDevAuthUnauthorized(err)
                }

                return nil, errors.Wrap(err, "request to verify tenant token failed")
        }

        return t, nil
}

func (d *DevAuth) getTenantWithDefault(
        ctx context.Context,
        tenantToken,
        defaultToken string,
) (context.Context, *tenant.Tenant, error) {
        l := log.FromContext(ctx)

        if tenantToken == "" && defaultToken == "" {
                return nil, nil, MakeErrDevAuthUnauthorized(errors.New("tenant token missing"))
        }

        var chosenToken string
        var t *tenant.Tenant
        var err error

        // try the provided token
        // but continue on errors and maybe try the default token
        if tenantToken != "" {
                t, err = d.doVerifyTenant(ctx, tenantToken)

                if err == nil {
                        chosenToken = tenantToken
                } else {
                        l.Errorf("Failed to verify supplied tenant token: %s", err.Error())
                }
        }

        // if we still haven't selected a tenant - the token didn't work
        // try the default one
        if t == nil && defaultToken != "" {
                t, err = d.doVerifyTenant(ctx, defaultToken)

                if err == nil {
                        chosenToken = defaultToken
                }
                if err != nil {
                        l.Errorf("Failed to verify default tenant token: %s", err.Error())
                }
        }

        // none of the tokens worked
        if err != nil {
                if tenant.IsErrTokenVerificationFailed(err) {
                        return ctx, nil, MakeErrDevAuthUnauthorized(err)
                }
                return ctx, nil, err
        }

        // we do have a working token/valid tenant
        tCtx, err := tenantWithContext(ctx, chosenToken)
        if err != nil {
                l.Errorf("failed to setup tenant context: %v", err)
                return nil, nil, ErrDevAuthUnauthorized
        }

        return tCtx, t, nil
}

func (d *DevAuth) SubmitAuthRequest(ctx context.Context, r *model.AuthReq) (string, error) {
        l := log.FromContext(ctx)

        var tenant *tenant.Tenant
        var err error

        if d.verifyTenant {
                ctx, tenant, err = d.getTenantWithDefault(ctx, r.TenantToken, d.config.DefaultTenantToken)
                if err != nil {
                        return "", err
                }
        } else {
                // ignore identity data when tenant verification is off
                // it's possible that the device will provide old auth token or old tenant token
                // in the authorization header;
                // in that case we need to wipe identity data from the context
                ctx = identity.WithContext(ctx, nil)
        }

        // first, try to handle preauthorization
        authSet, err := d.processPreAuthRequest(ctx, r)
        if err != nil {
                return "", err
        }

        // if not a preauth request, process with regular auth request handling
        if authSet == nil {
                authSet, err = d.processAuthRequest(ctx, r)
                if err != nil {
                        return "", err
                }
        }

        // request was already present in DB, check its status
        if authSet.Status == model.DevStatusAccepted {
                jti := oid.FromString(authSet.Id)
                if jti.String() == "" {
                        return "", ErrInvalidAuthSetID
                }
                sub := oid.FromString(authSet.DeviceId)
                if sub.String() == "" {
                        return "", ErrInvalidDeviceID
                }
                now := time.Now()
                token := &jwt.Token{Claims: jwt.Claims{
                        ID:      jti,
                        Subject: sub,
                        Issuer:  d.config.Issuer,
                        ExpiresAt: jwt.Time{
                                Time: now.Add(time.Second *
                                        time.Duration(d.config.ExpirationTime)),
                        },
                        IssuedAt: jwt.Time{Time: now},
                        Device:   true,
                }}

                if d.verifyTenant {
                        token.Claims.Tenant = tenant.ID
                        token.Claims.Plan = tenant.Plan
                        token.Claims.Addons = tenant.Addons
                        token.Claims.Trial = tenant.Trial
                } else {
                        token.Claims.Plan = plan.PlanEnterprise
                        token.Addons = addons.AllAddonsEnabled
                }

                // sign and encode as JWT
                raw, err := token.MarshalJWT(d.signToken(ctx))
                if err != nil {
                        return "", errors.Wrap(err, "generate token error")
                }

                if err := d.db.AddToken(ctx, token); err != nil {
                        return "", errors.Wrap(err, "add token error")
                }

                l.Infof("Token %s assigned to device %s",
                        token.Claims.ID, token.Claims.Subject)
                _ = d.updateCheckInTime(ctx, authSet.DeviceId, token.Claims.Tenant, nil)
                return string(raw), nil
        }

        // no token, return device unauthorized
        return "", ErrDevAuthUnauthorized

}

func (d *DevAuth) processPreAuthRequest(
        ctx context.Context,
        r *model.AuthReq,
) (*model.AuthSet, error) {
        var deviceAlreadyAccepted bool

        _, idDataSha256, err := parseIdData(r.IdData)
        if err != nil {
                return nil, MakeErrDevAuthBadRequest(err)
        }

        // authset exists?
        aset, err := d.db.GetAuthSetByIdDataHashKey(ctx, idDataSha256, r.PubKey)
        switch err {
        case nil:
                break
        case store.ErrAuthSetNotFound:
                return nil, nil
        default:
                return nil, errors.Wrap(err, "failed to fetch auth set")
        }

        // if authset status is not 'preauthorized', nothing to do
        if aset.Status != model.DevStatusPreauth {
                return nil, nil
        }

        // check the device status
        // if the device status is accepted then do not trigger provisioning workflow
        // this needs to be checked before changing authentication set status
        dev, err := d.db.GetDeviceById(ctx, aset.DeviceId)
        if err != nil {
                return nil, err
        }

        currentStatus := dev.Status
        if dev.Status == model.DevStatusAccepted {
                deviceAlreadyAccepted = true
        }

        // auth set is ok for auto-accepting, check device limit
        allow, err := d.canAcceptDevice(ctx)
        if err != nil {
                return nil, err
        }

        if !allow {
                return nil, ErrMaxDeviceCountReached
        }

        update := model.AuthSetUpdate{
                Status: model.DevStatusAccepted,
        }
        // persist the 'accepted' status in both auth set, and device
        if err := d.db.UpdateAuthSetById(ctx, aset.Id, update); err != nil {
                return nil, errors.Wrap(err, "failed to update auth set status")
        }

        if err := d.updateDeviceStatus(
                ctx,
                aset.DeviceId,
                model.DevStatusAccepted,
                currentStatus,
        ); err != nil {
                return nil, err
        }

        aset.Status = model.DevStatusAccepted
        dev.Status = model.DevStatusAccepted
        dev.AuthSets = append(dev.AuthSets, *aset)

        if !deviceAlreadyAccepted {
                reqId := requestid.FromContext(ctx)
                var tenantID string
                if idty := identity.FromContext(ctx); idty != nil {
                        tenantID = idty.Tenant
                }

                // submit device accepted job
                if err := d.cOrch.SubmitProvisionDeviceJob(
                        ctx,
                        orchestrator.ProvisionDeviceReq{
                                RequestId: reqId,
                                DeviceID:  aset.DeviceId,
                                TenantID:  tenantID,
                                Device:    dev,
                                Status:    dev.Status,
                        }); err != nil {
                        return nil, errors.Wrap(err, "submit device provisioning job error")
                }
        }
        return aset, nil
}

func (d *DevAuth) updateDeviceStatus(
        ctx context.Context,
        devId,
        status string,
        currentStatus string,
) error {
        newStatus, err := d.db.GetDeviceStatus(ctx, devId)
        if currentStatus == newStatus {
                return nil
        }
        if status == "" {
                switch err {
                case nil:
                        status = newStatus
                case store.ErrAuthSetNotFound:
                        status = model.DevStatusNoAuth
                default:
                        return errors.Wrap(err, "Cannot determine device status")
                }
        }

        // submit device status change job
        dev, err := d.db.GetDeviceById(ctx, devId)
        if err != nil {
                return errors.Wrap(err, "db get device by id error")
        }

        tenantId := ""
        idData := identity.FromContext(ctx)
        if idData != nil {
                tenantId = idData.Tenant
        }
        req := orchestrator.UpdateDeviceStatusReq{
                RequestId: requestid.FromContext(ctx),
                Devices: []model.DeviceInventoryUpdate{{
                        Id:       dev.Id,
                        Revision: dev.Revision + 1,
                }},
                TenantId: tenantId,
                Status:   status,
        }
        if err := d.cOrch.SubmitUpdateDeviceStatusJob(ctx, req); err != nil {
                return errors.Wrap(err, "update device status job error")
        }

        if err := d.db.UpdateDevice(ctx,
                devId,
                model.DeviceUpdate{
                        Status:    status,
                        UpdatedTs: uto.TimePtr(time.Now().UTC()),
                }); err != nil {
                return errors.Wrap(err, "failed to update device status")
        }

        if d.config.EnableReporting {
                if err := d.cOrch.SubmitReindexReporting(ctx, devId); err != nil {
                        return errors.Wrap(err, "reindex reporting job error")
                }
        }

        return nil
}

// processAuthRequest will process incoming auth request and record authentication
// data information it contains. Returns a tupe (auth set, error). If no errors were
// present, model.AuthSet.Status will indicate the status of device admission
func (d *DevAuth) processAuthRequest(
        ctx context.Context,
        r *model.AuthReq,
) (*model.AuthSet, error) {

        l := log.FromContext(ctx)

        // get device associated with given authorization request
        dev, err := d.getDeviceFromAuthRequest(ctx, r)
        if err != nil {
                return nil, err
        }

        idDataStruct, idDataSha256, err := parseIdData(r.IdData)
        if err != nil {
                return nil, MakeErrDevAuthBadRequest(err)
        }

        areq := &model.AuthSet{
                Id:           oid.NewUUIDv4().String(),
                IdData:       r.IdData,
                IdDataStruct: idDataStruct,
                IdDataSha256: idDataSha256,
                PubKey:       r.PubKey,
                DeviceId:     dev.Id,
                Status:       model.DevStatusPending,
                Timestamp:    uto.TimePtr(time.Now()),
        }

        // record authentication request
        err = d.db.AddAuthSet(ctx, *areq)
        if err != nil && err != store.ErrObjectExists {
                return nil, err
        }

        // update the device status
        if err := d.updateDeviceStatus(ctx, dev.Id, "", dev.Status); err != nil {
                return nil, err
        }

        // either the request was added or it was already present in the DB, get
        // it now
        areq, err = d.db.GetAuthSetByIdDataHashKey(ctx, idDataSha256, r.PubKey)
        if err != nil {
                l.Error("failed to find device auth set but could not add one either")
                return nil, errors.New("failed to locate device auth set")
        }

        return areq, nil
}

func (d *DevAuth) GetDevices(
        ctx context.Context,
        skip,
        limit uint,
        filter model.DeviceFilter,
) ([]model.Device, error) {
        devs, err := d.db.GetDevices(ctx, skip, limit, filter)
        if err != nil {
                return nil, errors.Wrap(err, "failed to list devices")
        }

        for i := range devs {
                devs[i].AuthSets, err = d.db.GetAuthSetsForDevice(ctx, devs[i].Id)
                if err != nil && err != store.ErrAuthSetNotFound {
                        return nil, errors.Wrap(err, "db get auth sets error")
                }
        }

        // update check-in time
        if d.cache != nil {
                tenantID := ""
                idData := identity.FromContext(ctx)
                if idData != nil {
                        tenantID = idData.Tenant
                }

                ids := make([]string, len(devs))
                for i := range devs {
                        ids[i] = devs[i].Id
                }
                checkInTimes, err := d.cache.GetCheckInTimes(ctx, tenantID, ids)
                if err != nil {
                        l := log.FromContext(ctx)
                        l.Errorf("Failed to get check-in times for devices")
                } else {
                        for i := range devs {
                                if checkInTimes[i] != nil {
                                        devs[i].CheckInTime = checkInTimes[i]
                                }
                        }
                }
        }

        return devs, err
}

func (d *DevAuth) GetDevice(ctx context.Context, devId string) (*model.Device, error) {
        dev, err := d.db.GetDeviceById(ctx, devId)
        if err != nil {
                if err != store.ErrDevNotFound {
                        return nil, errors.Wrap(err, "db get device by id error")
                }
                return nil, err
        }

        dev.AuthSets, err = d.db.GetAuthSetsForDevice(ctx, dev.Id)
        if err != nil {
                if err != store.ErrAuthSetNotFound {
                        return nil, errors.Wrap(err, "db get auth sets error")
                }
                return dev, nil
        }

        if d.cache != nil {
                tenantID := ""
                idData := identity.FromContext(ctx)
                if idData != nil {
                        tenantID = idData.Tenant
                }

                checkInTime, err := d.cache.GetCheckInTime(ctx, tenantID, devId)
                if err != nil {
                        l := log.FromContext(ctx)
                        l.Errorf("Failed to get check-in times for device")
                } else if checkInTime != nil {
                        dev.CheckInTime = checkInTime
                }
        }

        return dev, err
}

// DecommissionDevice deletes device and all its tokens
func (d *DevAuth) DecommissionDevice(ctx context.Context, devID string) error {

        l := log.FromContext(ctx)

        l.Warnf("Decommission device with id: %s", devID)

        err := d.cacheDeleteToken(ctx, devID)
        if err != nil {
                return errors.Wrapf(err, "failed to delete token for %s from cache", devID)
        }

        // set decommissioning flag on the device
        updev := model.DeviceUpdate{
                Decommissioning: uto.BoolPtr(true),
        }
        if err := d.db.UpdateDevice(
                ctx, devID, updev,
        ); err != nil {
                return err
        }

        reqId := requestid.FromContext(ctx)

        tenantID := ""
        idData := identity.FromContext(ctx)
        if idData != nil {
                tenantID = idData.Tenant
        }

        // submit device decommissioning job
        if err := d.cOrch.SubmitDeviceDecommisioningJob(
                ctx,
                orchestrator.DecommissioningReq{
                        DeviceId:  devID,
                        RequestId: reqId,
                        TenantID:  tenantID,
                }); err != nil {
                return errors.Wrap(err, "submit device decommissioning job error")
        }

        return err
}

// Delete a device and its tokens from deviceauth db
func (d *DevAuth) DeleteDevice(ctx context.Context, devID string) error {
        // delete device authorization sets
        if err := d.db.DeleteAuthSetsForDevice(ctx, devID); err != nil &&
                err != store.ErrAuthSetNotFound {
                return errors.Wrap(err, "db delete device authorization sets error")
        }

        devOID := oid.FromString(devID)
        // If the devID is not a valid string, there's no token.
        if devOID.String() == "" {
                return ErrInvalidDeviceID
        }
        // delete device tokens
        if err := d.db.DeleteTokenByDevId(
                ctx, devOID,
        ); err != nil && err != store.ErrTokenNotFound {
                return errors.Wrap(err, "db delete device tokens error")
        }

        // delete device
        if err := d.db.DeleteDevice(ctx, devID); err != nil {
                return err
        }

        if d.config.EnableReporting {
                if err := d.cOrch.SubmitReindexReporting(ctx, devID); err != nil {
                        return errors.Wrap(err, "reindex reporting job error")
                }
        }

        return nil
}

// Deletes device authentication set, and optionally the device.
func (d *DevAuth) DeleteAuthSet(ctx context.Context, devID string, authId string) error {

        l := log.FromContext(ctx)

        l.Warnf("Delete authentication set with id: "+
                "%s for the device with id: %s",
                authId, devID)

        err := d.cacheDeleteToken(ctx, devID)
        if err != nil {
                return errors.Wrapf(err, "failed to delete token for %s from cache", devID)
        }

        // retrieve device authentication set to check its status
        authSet, err := d.db.GetAuthSetById(ctx, authId)
        if err != nil {
                if err == store.ErrAuthSetNotFound {
                        return err
                }
                return errors.Wrap(err, "db get auth set error")
        }

        // delete device authorization set
        if err := d.db.DeleteAuthSetForDevice(ctx, devID, authId); err != nil {
                return err
        }

        // if the device authentication set is accepted delete device tokens
        if authSet.Status == model.DevStatusAccepted {
                // If string is not a valid UUID there's no token.
                devOID := oid.FromString(devID)
                if err := d.db.DeleteTokenByDevId(
                        ctx, devOID,
                ); err != nil && err != store.ErrTokenNotFound {
                        return errors.Wrap(err,
                                "db delete device tokens error")
                }
        } else if authSet.Status == model.DevStatusPreauth {
                // if the auth set status is 'preauthorized', the device is deleted from
                // deviceauth. We cannot start the decommission_device workflow because
                // we don't provision devices until they are accepted. Still, we need to
                // remove the device from the inventory service because we index pre-authorized
                // devices for consumption via filtering APIs. To trigger the deletion
                // from the inventory service, we start the status update workflow with the
                // special value "decommissioned", which will cause the deletion of the
                // device from the inventory service's database
                tenantID := ""
                idData := identity.FromContext(ctx)
                if idData != nil {
                        tenantID = idData.Tenant
                }
                req := orchestrator.UpdateDeviceStatusReq{
                        RequestId: requestid.FromContext(ctx),
                        Devices:   []model.DeviceInventoryUpdate{{Id: devID}},
                        TenantId:  tenantID,
                        Status:    "decommissioned",
                }
                if err = d.cOrch.SubmitUpdateDeviceStatusJob(ctx, req); err != nil {
                        return errors.Wrap(err, "update device status job error")
                }

                // delete device
                if err := d.db.DeleteDevice(ctx, devID); err != nil {
                        return err
                }

                if d.config.EnableReporting {
                        if err := d.cOrch.SubmitReindexReporting(ctx, devID); err != nil {
                                return errors.Wrap(err, "reindex reporting job error")
                        }
                }

                return nil
        }

        return d.updateDeviceStatus(ctx, devID, "", authSet.Status)
}

func (d *DevAuth) AcceptDeviceAuth(ctx context.Context, device_id string, auth_id string) error {
        l := log.FromContext(ctx)

        aset, err := d.db.GetAuthSetById(ctx, auth_id)
        if err != nil {
                if err == store.ErrAuthSetNotFound {
                        return err
                }
                return errors.Wrap(err, "db get auth set error")
        }

        // device authentication set already accepted, nothing to do here
        if aset.Status == model.DevStatusAccepted {
                l.Debugf("Device %s already accepted", device_id)
                return nil
        } else if aset.Status != model.DevStatusRejected && aset.Status != model.DevStatusPending {
                // device authentication set can be accepted only from 'pending' or 'rejected' statuses
                return ErrDevAuthBadRequest
        }

        // check the device status
        // if the device status is accepted then do not trigger provisioning workflow
        // this needs to be checked before changing authentication set status
        dev, err := d.db.GetDeviceById(ctx, device_id)
        if err != nil {
                return err
        }

        // possible race, consider accept-count-unaccept pattern if that's problematic
        allow, err := d.canAcceptDevice(ctx)
        if err != nil {
                return err
        }

        if !allow {
                return ErrMaxDeviceCountReached
        }

        if err := d.setAuthSetStatus(ctx, device_id, auth_id, model.DevStatusAccepted); err != nil {
                return err
        }

        if dev.Status != model.DevStatusPending {
                // Device already exist in all services
                // We're done...
                return nil
        }

        dev.Status = model.DevStatusAccepted
        aset.Status = model.DevStatusAccepted
        dev.AuthSets = []model.AuthSet{*aset}

        reqId := requestid.FromContext(ctx)

        var tenantID string
        if idty := identity.FromContext(ctx); idty != nil {
                tenantID = idty.Tenant
        }

        // submit device accepted job
        if err := d.cOrch.SubmitProvisionDeviceJob(
                ctx,
                orchestrator.ProvisionDeviceReq{
                        RequestId: reqId,
                        DeviceID:  aset.DeviceId,
                        TenantID:  tenantID,
                        Device:    dev,
                        Status:    dev.Status,
                }); err != nil {
                return errors.Wrap(err, "submit device provisioning job error")
        }

        return nil
}

func (d *DevAuth) setAuthSetStatus(
        ctx context.Context,
        deviceID string,
        authID string,
        status string,
) error {
        aset, err := d.db.GetAuthSetById(ctx, authID)
        if err != nil {
                if err == store.ErrAuthSetNotFound {
                        return err
                }
                return errors.Wrap(err, "db get auth set error")
        }

        if aset.DeviceId != deviceID {
                return ErrDevIdAuthIdMismatch
        }

        if aset.Status == status {
                return nil
        }

        currentStatus := aset.Status

        if aset.Status == model.DevStatusAccepted &&
                (status == model.DevStatusRejected || status == model.DevStatusPending) {
                deviceOID := oid.FromString(aset.DeviceId)
                // delete device token
                err := d.db.DeleteTokenByDevId(ctx, deviceOID)
                if err != nil && err != store.ErrTokenNotFound {
                        return errors.Wrap(err, "db delete device token error")
                }
        }

        // if accepting an auth set
        if status == model.DevStatusAccepted {
                // reject all accepted auth sets for this device first
                if err := d.db.UpdateAuthSet(ctx,
                        bson.M{
                                model.AuthSetKeyDeviceId: deviceID,
                                "$or": []bson.M{
                                        {model.AuthSetKeyStatus: model.DevStatusAccepted},
                                        {model.AuthSetKeyStatus: model.DevStatusPreauth},
                                },
                        },
                        model.AuthSetUpdate{
                                Status: model.DevStatusRejected,
                        }); err != nil && err != store.ErrAuthSetNotFound {
                        return errors.Wrap(err, "failed to reject auth sets")
                }
        }

        if err := d.db.UpdateAuthSetById(ctx, aset.Id, model.AuthSetUpdate{
                Status: status,
        }); err != nil {
                return errors.Wrap(err, "db update device auth set error")
        }

        if status == model.DevStatusAccepted {
                return d.updateDeviceStatus(ctx, deviceID, status, currentStatus)
        }
        return d.updateDeviceStatus(ctx, deviceID, "", currentStatus)
}

func (d *DevAuth) RejectDeviceAuth(ctx context.Context, device_id string, auth_id string) error {
        aset, err := d.db.GetAuthSetById(ctx, auth_id)
        if err != nil {
                if err == store.ErrAuthSetNotFound {
                        return err
                }
                return errors.Wrap(err, "db get auth set error")
        } else if aset.Status != model.DevStatusPending && aset.Status != model.DevStatusAccepted {
                // device authentication set can be rejected only from 'accepted' or 'pending' statuses
                return ErrDevAuthBadRequest
        }

        err = d.cacheDeleteToken(ctx, device_id)
        if err != nil {
                return errors.Wrapf(err, "failed to delete token for %s from cache", device_id)
        }

        return d.setAuthSetStatus(ctx, device_id, auth_id, model.DevStatusRejected)
}

func (d *DevAuth) ResetDeviceAuth(ctx context.Context, device_id string, auth_id string) error {
        aset, err := d.db.GetAuthSetById(ctx, auth_id)
        if err != nil {
                if err == store.ErrAuthSetNotFound {
                        return err
                }
                return errors.Wrap(err, "db get auth set error")
        } else if aset.Status == model.DevStatusPreauth {
                // preauthorized auth set should not go into pending state
                return ErrDevAuthBadRequest
        }
        return d.setAuthSetStatus(ctx, device_id, auth_id, model.DevStatusPending)
}

func parseIdData(idData string) (map[string]interface{}, []byte, error) {
        var idDataStruct map[string]interface{}
        var idDataSha256 []byte

        err := json.Unmarshal([]byte(idData), &idDataStruct)
        if err != nil {
                return idDataStruct, idDataSha256, errors.Wrapf(
                        err,
                        "failed to parse identity data: %s",
                        idData,
                )
        }

        hash := sha256.New()
        _, _ = hash.Write([]byte(idData))
        idDataSha256 = hash.Sum(nil)

        return idDataStruct, idDataSha256, nil
}

func (d *DevAuth) PreauthorizeDevice(
        ctx context.Context,
        req *model.PreAuthReq,
) (*model.Device, error) {
        // try add device, if a device with the given id_data exists -
        // the unique index on id_data will prevent it (conflict)
        // this is the only safeguard against id data conflict - we won't try to handle it
        // additionally on inserting the auth set (can't add an id data index on auth set - would
        // prevent key rotation)

        // FIXME: tenant_token is "" on purpose, will be removed

        l := log.FromContext(ctx)

        dev := model.NewDevice(req.DeviceId, req.IdData, req.PubKey)
        dev.Status = model.DevStatusPreauth

        idDataStruct, idDataSha256, err := parseIdData(req.IdData)
        if err != nil {
                return nil, MakeErrDevAuthBadRequest(err)
        }

        dev.IdDataStruct = idDataStruct
        dev.IdDataSha256 = idDataSha256

        err = d.db.AddDevice(ctx, *dev)
        switch err {
        case nil:
                break
        case store.ErrObjectExists:
                dev, err = d.db.GetDeviceByIdentityDataHash(ctx, idDataSha256)
                if err != nil {
                        l.Error("failed to find device but could not preauthorize either")
                        return nil, errors.New("failed to preauthorize device")
                }
                return dev, ErrDeviceExists
        default:
                return nil, errors.Wrap(err, "failed to add device")
        }

        tenantId := ""
        idData := identity.FromContext(ctx)
        if idData != nil {
                tenantId = idData.Tenant
        }

        wfReq := orchestrator.UpdateDeviceStatusReq{
                RequestId: requestid.FromContext(ctx),
                Devices: []model.DeviceInventoryUpdate{{
                        Id:       dev.Id,
                        Revision: dev.Revision,
                }},
                TenantId: tenantId,
                Status:   dev.Status,
        }
        if err = d.cOrch.SubmitUpdateDeviceStatusJob(ctx, wfReq); err != nil {
                return nil, errors.Wrap(err, "update device status job error")
        }

        // record authentication request
        authset := model.AuthSet{
                Id:           req.AuthSetId,
                IdData:       req.IdData,
                IdDataStruct: idDataStruct,
                IdDataSha256: idDataSha256,
                PubKey:       req.PubKey,
                DeviceId:     req.DeviceId,
                Status:       model.DevStatusPreauth,
                Timestamp:    uto.TimePtr(time.Now()),
        }

        err = d.db.AddAuthSet(ctx, authset)
        switch err {
        case nil:
                if err := d.setDeviceIdentity(ctx, dev, tenantId); err != nil {
                        return nil, err
                }
                return nil, nil
        case store.ErrObjectExists:
                dev, err = d.db.GetDeviceByIdentityDataHash(ctx, idDataSha256)
                if err != nil {
                        l.Error("failed to find device but could not preauthorize either")
                        return nil, errors.New("failed to preauthorize device")
                }
                return dev, ErrDeviceExists
        default:
                return nil, errors.Wrap(err, "failed to add auth set")
        }
}

func (d *DevAuth) RevokeToken(ctx context.Context, tokenID string) error {
        l := log.FromContext(ctx)
        tokenOID := oid.FromString(tokenID)

        var token *jwt.Token
        token, err := d.db.GetToken(ctx, tokenOID)
        if err != nil {
                return err
        }

        l.Warnf("Revoke token with jti: %s", tokenID)
        err = d.db.DeleteToken(ctx, tokenOID)

        if err == nil && d.cache != nil {
                err = d.cacheDeleteToken(ctx, token.Claims.Subject.String())
                err = errors.Wrapf(
                        err,
                        "failed to delete token for %s from cache",
                        token.Claims.Subject.String(),
                )
        }
        return err
}

func verifyTenantClaim(ctx context.Context, verifyTenant bool, tenant string) error {

        l := log.FromContext(ctx)

        if verifyTenant {
                if tenant == "" {
                        l.Errorf("No tenant claim in the token")
                        return jwt.ErrTokenInvalid
                }
        } else if tenant != "" {
                l.Errorf("Unexpected tenant claim: %s in the token", tenant)
                return jwt.ErrTokenInvalid
        }

        return nil
}

func (d *DevAuth) VerifyToken(ctx context.Context, raw string) error {

        l := log.FromContext(ctx)

        token := &jwt.Token{}

        err := token.UnmarshalJWT([]byte(raw), d.jwt.FromJWT)
        jti := token.Claims.ID
        if err != nil {
                if err == jwt.ErrTokenExpired && jti.String() != "" {
                        l.Errorf("Token %s expired: %v", jti, err)
                        return d.handleExpiredToken(ctx, jti)
                }
                l.Errorf("Token %s invalid: %v", jti, err)
                return jwt.ErrTokenInvalid
        }

        if !token.Claims.Device {
                l.Errorf("not a device token")
                return jwt.ErrTokenInvalid
        }

        if err := verifyTenantClaim(ctx, d.verifyTenant, token.Claims.Tenant); err != nil {
                return err
        }
        if err = d.checker.ValidateWithContext(ctx); err != nil {
                return err
        }

        origMethod := ctxhttpheader.FromContext(ctx, "X-Forwarded-Method")
        origUri := ctxhttpheader.FromContext(ctx, "X-Forwarded-Uri")
        origUri = purgeUriArgs(origUri)

        // throttle and try fetch token from cache - if cached, it was
        // already verified against the db checks below, we trust it
        cachedToken, err := d.cacheThrottleVerify(ctx, token, raw, origMethod, origUri)

        if err == cache.ErrTooManyRequests {
                return err
        }

        if cachedToken != "" {
                // update device check-in time
                if err := d.updateCheckInTime(
                        ctx,
                        token.Claims.Subject.String(),
                        token.Claims.Tenant,
                        nil,
                ); err != nil {
                        l.Errorf(
                                "failed to update device check-in time for device %s: %s",
                                token.Claims.Subject.String(), err.Error(),
                        )
                }
                return nil
        }

        // caching is best effort, don't fail
        if err != nil {
                l.Errorf("Failed to throttle for token %v: %s, continue.", token, err.Error())
        }

        // cache check was a MISS, hit the db for verification
        // check if token is in the system
        _, err = d.db.GetToken(ctx, jti)
        if err != nil {
                if err == store.ErrTokenNotFound {
                        l.Errorf("Token %s not found", jti)
                        return err
                }
                return errors.Wrapf(err, "Cannot get token with id: %s from database: %s", jti, err)
        }

        auth, err := d.db.GetAuthSetById(ctx, jti.String())
        if err != nil {
                if err == store.ErrAuthSetNotFound {
                        l.Errorf("Auth set %s not found", jti)
                        return err
                }
                return err
        }

        if auth.Status != model.DevStatusAccepted {
                return jwt.ErrTokenInvalid
        }

        // reject authentication for device that is in the process of
        // decommissioning
        dev, err := d.db.GetDeviceById(ctx, auth.DeviceId)
        if err != nil {
                return err
        }
        if dev.Decommissioning {
                l.Errorf("Token %s rejected, device %s is being decommissioned", jti, auth.DeviceId)
                return jwt.ErrTokenInvalid
        }

        // update device check-in time
        if err := d.updateCheckInTime(
                ctx,
                token.Claims.Subject.String(),
                token.Claims.Tenant,
                dev.CheckInTime,
        ); err != nil {
                l.Errorf(
                        "failed to update device check-in time for device %s: %s",
                        token.Claims.Subject.String(), err.Error(),
                )
        }

        // after successful token verification - cache it (best effort)
        _ = d.cacheSetToken(ctx, token, raw)

        return nil
}

func (d *DevAuth) handleExpiredToken(ctx context.Context, jti oid.ObjectID) error {
        err := d.db.DeleteToken(ctx, jti)
        if err == store.ErrTokenNotFound {
                l := log.FromContext(ctx)
                l.Errorf("Token %s not found", jti)
                return err
        }
        if err != nil {
                return errors.Wrapf(err, "Cannot delete token with jti: %s : %s", jti, err)
        }
        return jwt.ErrTokenExpired
}

// purgeUriArgs removes query string args from an uri string
// important for burst control (bursts are per uri without args)
func purgeUriArgs(uri string) string {
        return strings.Split(uri, "?")[0]
}

func (d *DevAuth) cacheThrottleVerify(
        ctx context.Context,
        token *jwt.Token,
        originalRaw,
        origMethod,
        origUri string,
) (string, error) {
        if d.cache == nil {
                return "", nil
        }

        // try get cached/precomputed limits
        limits, err := d.getApiLimits(ctx,
                token.Claims.Tenant,
                token.Claims.Subject.String())

        if err != nil {
                return "", err
        }

        // apply throttling and fetch cached token
        cached, err := d.cache.Throttle(ctx,
                originalRaw,
                *limits,
                token.Claims.Tenant,
                token.Claims.Subject.String(),
                cache.IdTypeDevice,
                origUri,
                origMethod)

        return cached, err
}

func (d *DevAuth) cacheSetToken(ctx context.Context, token *jwt.Token, raw string) error {
        if d.cache == nil {
                return nil
        }

        expireIn := time.Duration(token.Claims.ExpiresAt.Unix()-d.clock.Now().Unix()) * time.Second

        return d.cache.CacheToken(ctx,
                token.Claims.Tenant,
                token.Claims.Subject.String(),
                cache.IdTypeDevice,
                raw,
                expireIn)
}

func (d *DevAuth) getApiLimits(
        ctx context.Context,
        tid,
        did string,
) (*ratelimits.ApiLimits, error) {
        limits, err := d.cache.GetLimits(ctx, tid, did, cache.IdTypeDevice)
        if err != nil {
                return nil, err
        }

        if limits != nil {
                return limits, nil
        }

        dev, err := d.db.GetDeviceById(ctx, did)
        if err != nil {
                return nil, err
        }

        t, err := d.cTenant.GetTenant(ctx, tid)
        if err != nil {
                return nil, errors.Wrap(err, "request to get tenant failed")
        }
        if t == nil {
                return nil, errors.New("tenant not found")
        }

        finalLimits := apiLimitsOverride(t.ApiLimits.DeviceLimits, dev.ApiLimits)

        err = d.cache.CacheLimits(ctx, finalLimits, tid, did, cache.IdTypeDevice)

        return &finalLimits, err
}

func (d *DevAuth) cacheDeleteToken(ctx context.Context, did string) error {
        if d.cache == nil {
                return nil
        }

        idData := identity.FromContext(ctx)
        if idData == nil {
                return errors.New("can't unpack tenant identity data from context")
        }
        tid := idData.Tenant

        return d.cache.DeleteToken(ctx, tid, did, cache.IdTypeDevice)
}

// TODO move to 'ratelimits', as ApiLimits methods maybe?
func apiLimitsOverride(src, dest ratelimits.ApiLimits) ratelimits.ApiLimits {
        // override only if not default
        if dest.ApiQuota.MaxCalls != 0 && dest.ApiQuota.IntervalSec != 0 {
                src.ApiQuota.MaxCalls = dest.ApiQuota.MaxCalls
                src.ApiQuota.IntervalSec = dest.ApiQuota.IntervalSec
        }

        out := make([]ratelimits.ApiBurst, len(src.ApiBursts))
        copy(out, src.ApiBursts)

        for _, bdest := range dest.ApiBursts {
                found := false
                for i, bsrc := range src.ApiBursts {
                        if bdest.Action == bsrc.Action &&
                                bdest.Uri == bsrc.Uri {
                                out[i].MinIntervalSec = bdest.MinIntervalSec
                                found = true
                        }
                }

                if !found {
                        out = append(out,
                                ratelimits.ApiBurst{
                                        Action:         bdest.Action,
                                        Uri:            bdest.Uri,
                                        MinIntervalSec: bdest.MinIntervalSec},
                        )
                }
        }

        src.ApiBursts = out
        return src
}

func (d *DevAuth) GetLimit(ctx context.Context, name string) (*model.Limit, error) {
        lim, err := d.db.GetLimit(ctx, name)

        switch err {
        case nil:
                return lim, nil
        case store.ErrLimitNotFound:
                return &model.Limit{Name: name, Value: 0}, nil
        default:
                return nil, err
        }
}

func (d *DevAuth) GetTenantLimit(
        ctx context.Context,
        name,
        tenant_id string,
) (*model.Limit, error) {
        ctx = identity.WithContext(ctx, &identity.Identity{
                Tenant: tenant_id,
        })

        return d.GetLimit(ctx, name)
}

// WithTenantVerification will force verification of tenant token with tenant
// administrator when processing device authentication requests. Returns an
// updated devauth.
func (d *DevAuth) WithTenantVerification(c tenant.ClientRunner) *DevAuth {
        d.cTenant = c
        d.verifyTenant = true
        return d
}

func (d *DevAuth) WithCache(c cache.Cache) *DevAuth {
        d.cache = c
        return d
}

func (d *DevAuth) WithClock(c utils.Clock) *DevAuth {
        d.clock = c
        return d
}

func (d *DevAuth) SetTenantLimit(ctx context.Context, tenant_id string, limit model.Limit) error {
        l := log.FromContext(ctx)

        ctx = identity.WithContext(ctx, &identity.Identity{
                Tenant: tenant_id,
        })

        l.Infof("setting limit %v for tenant %v", limit, tenant_id)

        if err := d.db.PutLimit(ctx, limit); err != nil {
                l.Errorf("failed to save limit %v for tenant %v to database: %v",
                        limit, tenant_id, err)
                return errors.Wrapf(err, "failed to save limit %v for tenant %v to database",
                        limit, tenant_id)
        }
        return nil
}

func (d *DevAuth) DeleteTenantLimit(ctx context.Context, tenant_id string, limit string) error {
        l := log.FromContext(ctx)

        ctx = identity.WithContext(ctx, &identity.Identity{
                Tenant: tenant_id,
        })

        l.Infof("removing limit %v for tenant %v", limit, tenant_id)

        if err := d.db.DeleteLimit(ctx, limit); err != nil {
                l.Errorf("failed to delete limit %v for tenant %v to database: %v",
                        limit, tenant_id, err)
                return errors.Wrapf(err, "failed to delete limit %v for tenant %v to database",
                        limit, tenant_id)
        }
        return nil
}

func (d *DevAuth) GetDevCountByStatus(ctx context.Context, status string) (int, error) {
        return d.db.GetDevCountByStatus(ctx, status)
}

// canAcceptDevice checks if model.LimitMaxDeviceCount will be exceeded
func (d *DevAuth) canAcceptDevice(ctx context.Context) (bool, error) {
        limit, err := d.GetLimit(ctx, model.LimitMaxDeviceCount)
        if err != nil {
                return false, errors.Wrap(err, "can't get current device limit")
        }

        if limit.Value == 0 {
                return true, nil
        }

        accepted, err := d.db.GetDevCountByStatus(ctx, model.DevStatusAccepted)
        if err != nil {
                return false, errors.Wrap(err, "can't get current device count")
        }

        if uint64(accepted+1) <= limit.Value {
                return true, nil
        }

        return false, nil
}

func (d *DevAuth) DeleteTokens(
        ctx context.Context,
        tenantID string,
        deviceID string,
) error {
        var err error
        ctx = identity.WithContext(ctx, &identity.Identity{
                Tenant: tenantID,
        })

        if deviceID != "" {
                deviceOID := oid.FromString(deviceID)
                if deviceOID.String() == "" {
                        return ErrInvalidAuthSetID
                }
                err = d.db.DeleteTokenByDevId(ctx, deviceOID)
        } else {
                if err := d.cacheFlush(ctx); err != nil {
                        return errors.Wrapf(
                                err,
                                "failed to flush cache when cleaning tokens for tenant %v",
                                tenantID,
                        )
                }

                err = d.db.DeleteTokens(ctx)
        }

        if err != nil && err != store.ErrTokenNotFound {
                return errors.Wrapf(
                        err,
                        "failed to delete tokens for tenant: %v, device id: %v",
                        tenantID,
                        deviceID,
                )
        }

        return nil
}

func (d *DevAuth) cacheFlush(ctx context.Context) error {
        if d.cache == nil {
                return nil
        }

        return d.cache.FlushDB(ctx)
}

func (d *DevAuth) ProvisionTenant(ctx context.Context, tenant_id string) error {
        tenantCtx := identity.WithContext(ctx, &identity.Identity{
                Tenant: tenant_id,
        })

        dbname := mstore.DbFromContext(tenantCtx, mongo.DbName)

        return d.db.WithAutomigrate().MigrateTenant(tenantCtx, dbname, mongo.DbVersion)
}

func (d *DevAuth) GetTenantDeviceStatus(
        ctx context.Context,
        tenantId,
        deviceId string,
) (*model.Status, error) {
        if tenantId != "" {
                ctx = identity.WithContext(ctx, &identity.Identity{
                        Tenant: tenantId,
                })
        }
        dev, err := d.db.GetDeviceById(ctx, deviceId)
        switch err {
        case nil:
                return &model.Status{Status: dev.Status}, nil
        case store.ErrDevNotFound:
                return nil, ErrDeviceNotFound
        default:
                return nil, errors.Wrapf(err, "get device %s failed", deviceId)

        }
}

func (d *DevAuth) updateCheckInTime(
        ctx context.Context,
        deviceId string,
        tenantId string,
        previous *time.Time,
) error {
        var err error
        checkInTime := uto.TimePtr(time.Now().UTC())
        // in case cache is disabled, use mongo
        if d.cache == nil {
                if err = d.db.UpdateDevice(ctx,
                        deviceId,
                        model.DeviceUpdate{
                                CheckInTime: checkInTime,
                        }); err != nil {
                        return err
                }
        } else {
                // get check-in time from cache
                previous, err = d.cache.GetCheckInTime(ctx, tenantId, deviceId)
                if err != nil {
                        return err
                }
                // update check-in time in cache
                err = d.cache.CacheCheckInTime(ctx, checkInTime, tenantId, deviceId)
                if err != nil {
                        return err
                }
        }
        // compare data without a time of current and previous check-in time
        // and if it's different trigger reindexing (if enabled)
        // and save check-in time in the database
        if previous == nil ||
                (previous != nil &&
                        !previous.Truncate(24*time.Hour).Equal(checkInTime.Truncate(24*time.Hour))) {
                // trigger reindexing
                if d.config.EnableReporting {
                        if err = d.cOrch.SubmitReindexReporting(ctx, deviceId); err != nil {
                                return errors.Wrap(err, "reindex reporting job error")
                        }
                }
                // dump cached value to database
                if d.cache != nil {
                        if err = d.db.UpdateDevice(ctx,
                                deviceId,
                                model.DeviceUpdate{
                                        CheckInTime: checkInTime,
                                }); err != nil {
                                return err
                        }
                }
        }
        return nil
}

mendersoftware / deviceauth / 865578666

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