/
create.go
629 lines (549 loc) · 18.8 KB
/
create.go
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package teams
import (
"errors"
"fmt"
"golang.org/x/net/context"
"github.com/keybase/client/go/engine"
"github.com/keybase/client/go/libkb"
"github.com/keybase/client/go/protocol/keybase1"
jsonw "github.com/keybase/go-jsonw"
)
func CreateImplicitTeam(ctx context.Context, g *libkb.GlobalContext, impTeam keybase1.ImplicitTeamDisplayName) (res keybase1.TeamID, teamName keybase1.TeamName, err error) {
defer g.CTrace(ctx, "CreateImplicitTeam", func() error { return err })()
teamName, err = NewImplicitTeamName()
if err != nil {
return res, teamName, err
}
teamID := teamName.ToTeamID(impTeam.IsPublic)
perUserKeyUpgradeSoft(ctx, g, "create-implicit-team")
me, err := loadMeForSignatures(ctx, g)
if err != nil {
return res, teamName, err
}
// Load all the Keybase users
loadUsernameList := func(usernames []string) (res []*keybase1.UserPlusKeysV2, err error) {
for _, username := range usernames {
arg := libkb.NewLoadUserArg(g).WithName(username).WithNetContext(ctx).WithPublicKeyOptional()
upak, _, err := g.GetUPAKLoader().LoadV2(arg)
if err != nil {
g.Log.CDebugf(ctx, "CreateImplicitTeam: failed to load user: %s msg: %s", username, err)
return res, err
}
res = append(res, &upak.Current)
}
return res, nil
}
ownerUPAKs, err := loadUsernameList(impTeam.Writers.KeybaseUsers)
if err != nil {
return res, teamName, err
}
readerUPAKs, err := loadUsernameList(impTeam.Readers.KeybaseUsers)
if err != nil {
return res, teamName, err
}
var owners []SCTeamMember
var readers []SCTeamMember
var ownerInvites []SCTeamInvite
var readerInvites []SCTeamInvite
// Form secret boxes and make invites for KB users with no PUKs
secretboxRecipients := make(map[keybase1.UserVersion]keybase1.PerUserKey)
// Form secret boxes for KB users with PUKs, and invites for those without
for _, upak := range ownerUPAKs {
uv := upak.ToUserVersion()
puk := upak.GetLatestPerUserKey()
if puk == nil {
// Add this person as an invite if they do not have a puk
ownerInvites = append(ownerInvites, SCTeamInvite{
Type: "keybase",
Name: uv.TeamInviteName(),
ID: NewInviteID(),
})
} else {
secretboxRecipients[uv] = *puk
owners = append(owners, SCTeamMember(uv))
}
}
for _, upak := range readerUPAKs {
uv := upak.ToUserVersion()
puk := upak.GetLatestPerUserKey()
if puk == nil {
// Add this person as an invite if they do not have a puk
readerInvites = append(readerInvites, SCTeamInvite{
Type: "keybase",
Name: uv.TeamInviteName(),
ID: NewInviteID(),
})
} else {
secretboxRecipients[uv] = *puk
readers = append(readers, SCTeamMember(uv))
}
}
members := SCTeamMembers{
Owners: &[]SCTeamMember{},
Admins: &[]SCTeamMember{},
Writers: &[]SCTeamMember{},
Readers: &[]SCTeamMember{},
}
if len(owners) > 0 {
members.Owners = &owners
}
if len(readers) > 0 {
members.Readers = &readers
}
// Add invites for assertions
for _, assertion := range impTeam.Writers.UnresolvedUsers {
ownerInvites = append(ownerInvites, SCTeamInvite{
Type: assertion.TeamInviteType(),
Name: assertion.TeamInviteName(),
ID: NewInviteID(),
})
}
for _, assertion := range impTeam.Readers.UnresolvedUsers {
readerInvites = append(readerInvites, SCTeamInvite{
Type: assertion.TeamInviteType(),
Name: assertion.TeamInviteName(),
ID: NewInviteID(),
})
}
invites := &SCTeamInvites{
Owners: nil,
Admins: nil,
Writers: nil,
Readers: nil,
}
if len(ownerInvites) > 0 {
invites.Owners = &ownerInvites
}
if len(readerInvites) > 0 {
invites.Readers = &readerInvites
}
// Post the team
return teamID, teamName,
makeSigAndPostRootTeam(ctx, g, me, members, invites, secretboxRecipients, teamName.String(),
teamID, impTeam.IsPublic, true, nil)
}
func makeSigAndPostRootTeam(ctx context.Context, g *libkb.GlobalContext, me libkb.UserForSignatures, members SCTeamMembers,
invites *SCTeamInvites, secretboxRecipients map[keybase1.UserVersion]keybase1.PerUserKey, name string,
teamID keybase1.TeamID, public, implicit bool, settings *SCTeamSettings) (err error) {
defer g.Trace("makeSigAndPostRootTeam", func() error { return err })()
g.Log.CDebugf(ctx, "makeSigAndPostRootTeam get device keys")
deviceSigningKey, err := g.ActiveDevice.SigningKey()
if err != nil {
return err
}
deviceEncryptionKey, err := g.ActiveDevice.EncryptionKey()
if err != nil {
return err
}
// These boxes will get posted along with the sig below.
m, err := NewTeamKeyManager(g)
if err != nil {
return err
}
secretboxes, err := m.SharedSecretBoxes(libkb.NewMetaContext(ctx, g), deviceEncryptionKey, secretboxRecipients)
if err != nil {
return err
}
perTeamSigningKey, err := m.SigningKey()
if err != nil {
return err
}
perTeamEncryptionKey, err := m.EncryptionKey()
if err != nil {
return err
}
g.Log.CDebugf(ctx, "makeSigAndPostRootTeam make sigs")
teamSection, err := makeRootTeamSection(name, teamID, members, invites, perTeamSigningKey.GetKID(),
perTeamEncryptionKey.GetKID(), public, implicit, settings)
if err != nil {
return err
}
// At this point the team section has every field filled out except the
// reverse sig. Now we'll wrap it into a full sig, marshal it to JSON, and
// sign it, *twice*. The first time with the per-team signing key, to
// produce the reverse sig, and the second time with the device signing
// key, after the reverse sig has been written in.
sigBodyBeforeReverse, err := TeamRootSig(g, me, deviceSigningKey, teamSection)
if err != nil {
return err
}
// Note that this (sigchain-v1-style) reverse sig is made with the derived *per-team* signing key.
reverseSig, _, _, err := libkb.SignJSON(sigBodyBeforeReverse, perTeamSigningKey)
if err != nil {
return err
}
// Update the team section to include the reverse sig, sign it again, and
// make a sigchain-v2-style sig out of it. Doing it this way, instead of
// generating it twice with different parameters, makes it less likely to
// accidentally capture different global state (like ctime and merkle
// seqno).
sigBodyAfterReverse := sigBodyBeforeReverse
sigBodyAfterReverse.SetValueAtPath("body.team.per_team_key.reverse_sig", jsonw.NewString(reverseSig))
sigJSONAfterReverse, err := sigBodyAfterReverse.Marshal()
if err != nil {
return err
}
seqType := seqTypeForTeamPublicness(public)
v2Sig, _, _, err := libkb.MakeSigchainV2OuterSig(
deviceSigningKey,
libkb.LinkTypeTeamRoot,
1, /* seqno */
sigJSONAfterReverse,
nil, /* prevLinkID */
libkb.SigHasRevokes(false),
seqType,
libkb.SigIgnoreIfUnsupported(false),
)
if err != nil {
return err
}
sigMultiItem := libkb.SigMultiItem{
Sig: v2Sig,
SigningKID: deviceSigningKey.GetKID(),
Type: string(libkb.LinkTypeTeamRoot),
SeqType: seqType,
SigInner: string(sigJSONAfterReverse),
TeamID: teamID,
PublicKeys: &libkb.SigMultiItemPublicKeys{
Encryption: perTeamEncryptionKey.GetKID(),
Signing: perTeamSigningKey.GetKID(),
},
}
err = precheckLinkToPost(ctx, g, sigMultiItem, nil, me.ToUserVersion())
if err != nil {
g.Log.CDebugf(ctx, "cannot post link (precheck): %v", err)
return err
}
g.Log.CDebugf(ctx, "makeSigAndPostRootTeam post sigs")
payload := make(libkb.JSONPayload)
payload["sigs"] = []interface{}{sigMultiItem}
payload["per_team_key"] = secretboxes
_, err = g.API.PostJSON(libkb.APIArg{
NetContext: ctx,
Endpoint: "sig/multi",
SessionType: libkb.APISessionTypeREQUIRED,
JSONPayload: payload,
})
if err != nil {
return err
}
g.Log.CDebugf(ctx, "makeSigAndPostRootTeam created team: %v", teamID)
return nil
}
func CreateRootTeam(ctx context.Context, g *libkb.GlobalContext, nameString string, settings keybase1.TeamSettings) (res *keybase1.TeamID, err error) {
defer g.CTraceTimed(ctx, "CreateRootTeam", func() error { return err })()
perUserKeyUpgradeSoft(ctx, g, "create-root-team")
name, err := keybase1.TeamNameFromString(nameString)
if err != nil {
return nil, err
}
if !name.IsRootTeam() {
return nil, fmt.Errorf("cannot create root team with subteam name: %v", nameString)
}
g.Log.CDebugf(ctx, "CreateRootTeam load me")
me, err := loadMeForSignatures(ctx, g)
if err != nil {
return nil, err
}
ownerLatest := me.GetLatestPerUserKey()
if ownerLatest == nil {
return nil, errors.New("can't create a new team without having provisioned a per-user key")
}
secretboxRecipients := map[keybase1.UserVersion]keybase1.PerUserKey{
me.ToUserVersion(): *ownerLatest,
}
members := SCTeamMembers{
Owners: &[]SCTeamMember{SCTeamMember(me.ToUserVersion())},
Admins: &[]SCTeamMember{},
Writers: &[]SCTeamMember{},
Readers: &[]SCTeamMember{},
}
var scSettings *SCTeamSettings
if settings.Open {
settingsTemp, err := CreateTeamSettings(settings.Open, settings.JoinAs)
if err != nil {
return nil, err
}
scSettings = &settingsTemp
}
teamID := name.ToPrivateTeamID()
err = makeSigAndPostRootTeam(ctx, g, me, members, nil,
secretboxRecipients, name.String(), teamID, false, false, scSettings)
return &teamID, err
}
func CreateSubteam(ctx context.Context, g *libkb.GlobalContext, subteamBasename string,
parentName keybase1.TeamName, addSelfAs keybase1.TeamRole) (ret *keybase1.TeamID, err error) {
defer g.CTrace(ctx, "CreateSubteam", func() error { return err })()
subteamName, err := parentName.Append(subteamBasename)
if err != nil {
return nil, err
}
// Assume private
public := false
subteamID := NewSubteamID(public)
perUserKeyUpgradeSoft(ctx, g, "create-subteam")
me, err := loadMeForSignatures(ctx, g)
if err != nil {
return nil, err
}
deviceSigningKey, err := g.ActiveDevice.SigningKey()
if err != nil {
return nil, err
}
parentTeam, err := GetForTeamManagementByStringName(ctx, g, parentName.String(), true)
if err != nil {
return nil, err
}
admin, err := parentTeam.getAdminPermission(ctx)
if err != nil {
return nil, err
}
if err := parentTeam.ForceMerkleRootUpdate(ctx); err != nil {
return nil, err
}
// Subteam creation involves two links, one in the parent team's chain, and
// one to start the new subteam chain. The start of the new subteam chain
// (type "team.subteam_head") is very similar to the "team.root" sig that
// starts a root team, and so making that link is very similar to what the
// CreateTeamEngine does.
newSubteamSig, err := generateNewSubteamSigForParentChain(g, me, deviceSigningKey, parentTeam.chain(), subteamName, subteamID, admin)
if err != nil {
return nil, err
}
// subteam needs to be keyed for all admins above it
allParentAdmins, err := parentTeam.AllAdmins(ctx)
if err != nil {
return nil, err
}
subteamHeadSig, secretboxes, err := generateHeadSigForSubteamChain(ctx, g, me,
deviceSigningKey, parentTeam.chain(), subteamName, subteamID, admin,
allParentAdmins, addSelfAs)
if err != nil {
return nil, err
}
err = precheckLinkToPost(ctx, g, *newSubteamSig, parentTeam.chain(), me.ToUserVersion())
if err != nil {
return nil, fmt.Errorf("cannot post link (precheck new subteam): %v", err)
}
err = precheckLinkToPost(ctx, g, *subteamHeadSig, nil, me.ToUserVersion())
if err != nil {
return nil, fmt.Errorf("cannot post link (precheck subteam head): %v", err)
}
payload := make(libkb.JSONPayload)
payload["sigs"] = []interface{}{newSubteamSig, subteamHeadSig}
payload["per_team_key"] = secretboxes
_, err = g.API.PostJSON(libkb.APIArg{
Endpoint: "sig/multi",
SessionType: libkb.APISessionTypeREQUIRED,
JSONPayload: payload,
})
if err != nil {
return nil, err
}
return &subteamID, nil
}
func makeRootTeamSection(teamName string, teamID keybase1.TeamID, members SCTeamMembers, invites *SCTeamInvites,
perTeamSigningKID keybase1.KID, perTeamEncryptionKID keybase1.KID, public bool, implicit bool, settings *SCTeamSettings) (SCTeamSection, error) {
teamSection := SCTeamSection{
Name: (*SCTeamName)(&teamName),
ID: (SCTeamID)(teamID),
Public: public,
Implicit: implicit,
PerTeamKey: &SCPerTeamKey{
Generation: 1,
SigKID: perTeamSigningKID,
EncKID: perTeamEncryptionKID,
},
Members: &members,
Invites: invites,
}
teamSection.Settings = settings
// At this point the team section has every field filled out except the
// reverse sig. Now we'll wrap it into a full sig, marshal it to JSON, and
// sign it, *twice*. The first time with the per-team signing key, to
// produce the reverse sig, and the second time with the device signing
// key, after the reverse sig has been written in.
return teamSection, nil
}
func generateNewSubteamSigForParentChain(g *libkb.GlobalContext, me libkb.UserForSignatures, signingKey libkb.GenericKey, parentTeam *TeamSigChainState, subteamName keybase1.TeamName, subteamID keybase1.TeamID, admin *SCTeamAdmin) (item *libkb.SigMultiItem, err error) {
newSubteamSigBody, err := NewSubteamSig(g, me, signingKey, parentTeam, subteamName, subteamID, admin)
if err != nil {
return nil, err
}
newSubteamSigJSON, err := newSubteamSigBody.Marshal()
if err != nil {
return nil, err
}
prevLinkID, err := libkb.ImportLinkID(parentTeam.GetLatestLinkID())
if err != nil {
return nil, err
}
seqType := seqTypeForTeamPublicness(parentTeam.IsPublic())
v2Sig, _, _, err := libkb.MakeSigchainV2OuterSig(
signingKey,
libkb.LinkTypeNewSubteam,
parentTeam.GetLatestSeqno()+1,
newSubteamSigJSON,
prevLinkID,
libkb.SigHasRevokes(false),
seqType,
libkb.SigIgnoreIfUnsupported(false),
)
if err != nil {
return nil, err
}
item = &libkb.SigMultiItem{
Sig: v2Sig,
SigningKID: signingKey.GetKID(),
Type: string(libkb.LinkTypeNewSubteam),
SeqType: seqType,
SigInner: string(newSubteamSigJSON),
TeamID: parentTeam.GetID(),
}
return item, nil
}
func generateHeadSigForSubteamChain(ctx context.Context, g *libkb.GlobalContext, me libkb.UserForSignatures,
signingKey libkb.GenericKey, parentTeam *TeamSigChainState, subteamName keybase1.TeamName,
subteamID keybase1.TeamID, admin *SCTeamAdmin, allParentAdmins []keybase1.UserVersion,
addSelfAs keybase1.TeamRole) (item *libkb.SigMultiItem, boxes *PerTeamSharedSecretBoxes, err error) {
deviceEncryptionKey, err := g.ActiveDevice.EncryptionKey()
if err != nil {
return
}
members := SCTeamMembers{
Owners: &[]SCTeamMember{},
Admins: &[]SCTeamMember{},
Writers: &[]SCTeamMember{},
Readers: &[]SCTeamMember{},
}
memSet := newMemberSet()
_, err = memSet.loadGroup(ctx, g, allParentAdmins, true /* store recipients */, true /* force poll */)
if err != nil {
return nil, nil, err
}
if addSelfAs != keybase1.TeamRole_NONE {
meUV := me.ToUserVersion()
memList := []SCTeamMember{SCTeamMember(meUV)}
switch addSelfAs {
case keybase1.TeamRole_READER:
members.Readers = &memList
case keybase1.TeamRole_WRITER:
members.Writers = &memList
case keybase1.TeamRole_ADMIN:
members.Admins = &memList
case keybase1.TeamRole_OWNER:
return nil, nil, errors.New("Cannot add self as owner to a subteam")
}
memSet.loadMember(ctx, g, meUV, true /* store recipient */, false /* force poll */)
}
// These boxes will get posted along with the sig below.
m, err := NewTeamKeyManager(g)
if err != nil {
return nil, nil, err
}
boxes, err = m.SharedSecretBoxes(libkb.NewMetaContext(ctx, g), deviceEncryptionKey, memSet.recipients)
if err != nil {
return nil, nil, err
}
perTeamSigningKey, err := m.SigningKey()
if err != nil {
return nil, nil, err
}
perTeamEncryptionKey, err := m.EncryptionKey()
if err != nil {
return nil, nil, err
}
// The "team" section of a subchain head link is similar to that of a
// "team.root" link, with the addition of the "parent" subsection.
teamSection, err := makeSubteamTeamSection(subteamName, subteamID, parentTeam, members, perTeamSigningKey.GetKID(), perTeamEncryptionKey.GetKID(), admin)
if err != nil {
return
}
subteamHeadSigBodyBeforeReverse, err := SubteamHeadSig(g, me, signingKey, teamSection)
if err != nil {
return
}
// Now generate the reverse sig and edit it into the JSON. Note that this
// (sigchain-v1-style) reverse sig is made with the derived *per-team*
// signing key.
reverseSig, _, _, err := libkb.SignJSON(subteamHeadSigBodyBeforeReverse, perTeamSigningKey)
if err != nil {
return
}
// Update the team section to include the reverse sig, sign it again, and
// make a sigchain-v2-style sig out of it. Doing it this way, instead of
// generating it twice with different parameters, makes it less likely to
// accidentally capture different global state (like ctime and merkle
// seqno).
subteamHeadSigBodyAfterReverse := subteamHeadSigBodyBeforeReverse
subteamHeadSigBodyAfterReverse.SetValueAtPath("body.team.per_team_key.reverse_sig", jsonw.NewString(reverseSig))
subteamHeadSigJSON, err := subteamHeadSigBodyAfterReverse.Marshal()
if err != nil {
return
}
seqType := seqTypeForTeamPublicness(parentTeam.IsPublic())
v2Sig, _, _, err := libkb.MakeSigchainV2OuterSig(
signingKey,
libkb.LinkTypeSubteamHead,
1, /* seqno */
subteamHeadSigJSON,
nil, /* prevLinkID */
libkb.SigHasRevokes(false),
seqType,
libkb.SigIgnoreIfUnsupported(false),
)
if err != nil {
return
}
item = &libkb.SigMultiItem{
Sig: v2Sig,
SigningKID: signingKey.GetKID(),
Type: string(libkb.LinkTypeSubteamHead),
SeqType: seqType,
SigInner: string(subteamHeadSigJSON),
TeamID: subteamID,
PublicKeys: &libkb.SigMultiItemPublicKeys{
Encryption: perTeamEncryptionKey.GetKID(),
Signing: perTeamSigningKey.GetKID(),
},
}
return
}
func makeSubteamTeamSection(subteamName keybase1.TeamName, subteamID keybase1.TeamID,
parentTeam *TeamSigChainState, members SCTeamMembers, perTeamSigningKID keybase1.KID,
perTeamEncryptionKID keybase1.KID, admin *SCTeamAdmin) (SCTeamSection, error) {
subteamName2 := subteamName.String()
teamSection := SCTeamSection{
Name: (*SCTeamName)(&subteamName2),
ID: (SCTeamID)(subteamID),
Parent: &SCTeamParent{
ID: SCTeamID(parentTeam.GetID()),
Seqno: parentTeam.GetLatestSeqno() + 1, // the seqno of the *new* parent link
SeqType: seqTypeForTeamPublicness(parentTeam.IsPublic()),
},
PerTeamKey: &SCPerTeamKey{
Generation: 1,
SigKID: perTeamSigningKID,
EncKID: perTeamEncryptionKID,
},
Members: &members,
Admin: admin,
}
// At this point the team section has every field filled out except the
// reverse sig. Next we'll wrap it into a full sig body, marshal it to
// JSON, and sign it, *twice*. The first time with the per-team signing
// key, to produce the reverse sig, and the second time with the device
// signing key, after the reverse sig has been written in.
return teamSection, nil
}
// Get a per-user key.
// Wait for attempt but only warn on error.
func perUserKeyUpgradeSoft(ctx context.Context, g *libkb.GlobalContext, reason string) {
m := libkb.NewMetaContext(ctx, g)
arg := &engine.PerUserKeyUpgradeArgs{}
eng := engine.NewPerUserKeyUpgrade(g, arg)
err := engine.RunEngine2(m, eng)
if err != nil {
m.CDebugf("PerUserKeyUpgrade failed (%s): %v", reason, err)
}
}