forked from keybase/client
/
list_trackers.go
112 lines (93 loc) · 2.87 KB
/
list_trackers.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package engine
import (
"errors"
"github.com/keybase/client/go/libkb"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
)
type ListTrackersUnverifiedEngine struct {
libkb.Contextified
arg ListTrackersUnverifiedEngineArg
res keybase1.UserSummarySet
}
// If a UID is given, the engine will list its trackers
// If an Assertion is given, the engine will try to resolve it to a UID via
// remote unless CachedOnly is true.
// Otherwise, the logged-in uid is used.
// If no user is logged in, NoUIDError is returned.
type ListTrackersUnverifiedEngineArg struct {
UID keybase1.UID
Assertion string
CachedOnly bool
}
func NewListTrackersUnverifiedEngine(g *libkb.GlobalContext, arg ListTrackersUnverifiedEngineArg) *ListTrackersUnverifiedEngine {
return &ListTrackersUnverifiedEngine{
Contextified: libkb.NewContextified(g),
arg: arg,
}
}
// Name is the unique engine name.
func (e *ListTrackersUnverifiedEngine) Name() string {
return "ListTrackersUnverifiedEngine"
}
func (e *ListTrackersUnverifiedEngine) Prereqs() Prereqs {
session := false
if len(e.arg.Assertion) == 0 && e.arg.UID.IsNil() {
session = true
}
return Prereqs{Device: session}
}
func (e *ListTrackersUnverifiedEngine) RequiredUIs() []libkb.UIKind {
return nil
}
func (e *ListTrackersUnverifiedEngine) SubConsumers() []libkb.UIConsumer {
return nil
}
// lookupUID prefers 1) the given uid if provided 2) assertion if provided 3) logged in uid
func lookupUID(m libkb.MetaContext, uid keybase1.UID, assertion string, cachedOnly bool) (ret keybase1.UID, err error) {
// If we're given the uid explicitly, use it.
if uid.Exists() {
return uid, nil
}
// Otherwise,
if len(assertion) != 0 {
if cachedOnly {
return ret, errors.New("cannot lookup assertion in CachedOnly mode")
}
larg := libkb.NewLoadUserArgWithMetaContext(m).WithPublicKeyOptional().WithName(assertion)
upk, _, err := m.G().GetUPAKLoader().LoadV2(larg)
if err != nil {
return ret, err
}
return upk.GetUID(), nil
}
uid = m.G().GetMyUID()
if uid.Exists() {
return uid, nil
}
return ret, libkb.NoUIDError{}
}
func (e *ListTrackersUnverifiedEngine) Run(m libkb.MetaContext) error {
uid, err := lookupUID(m, e.arg.UID, e.arg.Assertion, e.arg.CachedOnly)
if err != nil {
return err
}
callerUID := m.G().Env.GetUID()
ts := libkb.NewServertrustTrackerSyncer(m.G(), callerUID, libkb.FollowDirectionFollowers)
if e.arg.CachedOnly {
if err := libkb.RunSyncerCached(m, ts, uid); err != nil {
return err
}
e.res = ts.Result()
return nil
}
if err := libkb.RunSyncer(m, ts, uid, false /* loggedIn */, false /* forceReload */); err != nil {
return err
}
e.res = ts.Result()
return nil
}
func (e *ListTrackersUnverifiedEngine) GetResults() keybase1.UserSummarySet {
return e.res
}