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implicit.go
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implicit.go
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package teams
import (
"fmt"
"sort"
"github.com/keybase/client/go/kbfs"
"github.com/keybase/client/go/libkb"
"github.com/keybase/client/go/protocol/keybase1"
"golang.org/x/net/context"
)
type implicitTeamConflict struct {
// Note this TeamID is not validated by LookupImplicitTeam. Be aware of server trust.
TeamID keybase1.TeamID `json:"team_id"`
Generation int `json:"generation"`
ConflictDate string `json:"conflict_date"`
}
func (i *implicitTeamConflict) parse() (*keybase1.ImplicitTeamConflictInfo, error) {
return libkb.ParseImplicitTeamDisplayNameSuffix(fmt.Sprintf("(conflicted %s #%d)", i.ConflictDate, i.Generation))
}
type implicitTeam struct {
TeamID keybase1.TeamID `json:"team_id"`
DisplayName string `json:"display_name"`
Private bool `json:"is_private"`
Conflicts []implicitTeamConflict `json:"conflicts,omitempty"`
Status libkb.AppStatus `json:"status"`
}
func (i *implicitTeam) GetAppStatus() *libkb.AppStatus {
return &i.Status
}
// Lookup an implicit team by name like "alice,bob+bob@twitter (conflicted 2017-03-04 #1)"
// Resolves social assertions.
func LookupImplicitTeam(ctx context.Context, g *libkb.GlobalContext, displayName string, public bool) (
teamID keybase1.TeamID, impTeamName keybase1.ImplicitTeamDisplayName, err error) {
teamID, impTeamName, _, err = LookupImplicitTeamAndConflicts(ctx, g, displayName, public)
return teamID, impTeamName, err
}
// Lookup an implicit team by name like "alice,bob+bob@twitter (conflicted 2017-03-04 #1)"
// Resolves social assertions.
func LookupImplicitTeamAndConflicts(ctx context.Context, g *libkb.GlobalContext, displayName string, public bool) (
teamID keybase1.TeamID, impTeamName keybase1.ImplicitTeamDisplayName, conflicts []keybase1.ImplicitTeamConflictInfo, err error) {
impName, err := ResolveImplicitTeamDisplayName(ctx, g, displayName, public)
if err != nil {
return teamID, impTeamName, conflicts, err
}
return lookupImplicitTeamAndConflicts(ctx, g, displayName, impName)
}
// Lookup an implicit team by name like "alice,bob+bob@twitter (conflicted 2017-03-04 #1)"
// Does not resolve social assertions.
// preResolveDisplayName is used for logging and errors
func lookupImplicitTeamAndConflicts(ctx context.Context, g *libkb.GlobalContext,
preResolveDisplayName string, impTeamNameInput keybase1.ImplicitTeamDisplayName) (
teamID keybase1.TeamID, impTeamName keybase1.ImplicitTeamDisplayName, conflicts []keybase1.ImplicitTeamConflictInfo, err error) {
defer g.CTraceTimed(ctx, fmt.Sprintf("lookupImplicitTeamAndConflicts(%v)", preResolveDisplayName), func() error { return err })()
impTeamName = impTeamNameInput
// Use a copy without the conflict info to hit the api endpoint
var impTeamNameWithoutConflict keybase1.ImplicitTeamDisplayName
impTeamNameWithoutConflict = impTeamName
impTeamNameWithoutConflict.ConflictInfo = nil
lookupNameWithoutConflict, err := FormatImplicitTeamDisplayName(ctx, g, impTeamNameWithoutConflict)
if err != nil {
return teamID, impTeamName, conflicts, err
}
arg := libkb.NewRetryAPIArg("team/implicit")
arg.NetContext = ctx
arg.SessionType = libkb.APISessionTypeREQUIRED
arg.Args = libkb.HTTPArgs{
"display_name": libkb.S{Val: lookupNameWithoutConflict},
"public": libkb.B{Val: impTeamName.IsPublic},
}
var imp implicitTeam
if err = g.API.GetDecode(arg, &imp); err != nil {
if aerr, ok := err.(libkb.AppStatusError); ok &&
keybase1.StatusCode(aerr.Code) == keybase1.StatusCode_SCTeamReadError {
return teamID, impTeamName, conflicts, NewTeamDoesNotExistError(preResolveDisplayName)
}
return teamID, impTeamName, conflicts, err
}
if len(imp.Conflicts) > 0 {
g.Log.CDebugf(ctx, "LookupImplicitTeam found %v conflicts", len(imp.Conflicts))
}
// We will use this team. Changed later if we selected a conflict.
var foundSelectedConflict bool
teamID = imp.TeamID
for _, conflict := range imp.Conflicts {
conflictInfo, err := conflict.parse()
if err != nil {
// warn, don't fail
g.Log.CWarningf(ctx, "LookupImplicitTeam got conflict suffix: %v", err)
} else {
conflicts = append(conflicts, *conflictInfo)
}
if impTeamName.ConflictInfo != nil {
match := libkb.FormatImplicitTeamDisplayNameSuffix(*impTeamName.ConflictInfo) == libkb.FormatImplicitTeamDisplayNameSuffix(*conflictInfo)
if match {
teamID = conflict.TeamID
foundSelectedConflict = true
}
}
}
if impTeamName.ConflictInfo != nil && !foundSelectedConflict {
// We got the team but didn't find the specific conflict requested.
return teamID, impTeamName, conflicts, NewTeamDoesNotExistError("could not find team with suffix: %v", preResolveDisplayName)
}
team, err := Load(ctx, g, keybase1.LoadTeamArg{
ID: imp.TeamID,
ForceRepoll: true,
})
if err != nil {
return teamID, impTeamName, conflicts, err
}
// Check the display names. This is how we make sure the server returned a team with the right members.
teamDisplayName, err := team.ImplicitTeamDisplayNameString(ctx)
if err != nil {
return teamID, impTeamName, conflicts, err
}
referenceImpName, err := FormatImplicitTeamDisplayName(ctx, g, impTeamNameWithoutConflict)
if err != nil {
return teamID, impTeamName, conflicts, err
}
if teamDisplayName != referenceImpName {
return teamID, impTeamName, conflicts, fmt.Errorf("implicit team name mismatch: %s != %s",
teamDisplayName, referenceImpName)
}
if team.IsPublic() != impTeamName.IsPublic {
return teamID, impTeamName, conflicts, fmt.Errorf("implicit team public-ness mismatch: %v != %v", team.IsPublic(), impTeamName.IsPublic)
}
return teamID, impTeamName, conflicts, nil
}
// Lookup or create an implicit team by name like "alice,bob+bob@twitter (conflicted 2017-03-04 #1)"
// Resolves social assertions.
func LookupOrCreateImplicitTeam(ctx context.Context, g *libkb.GlobalContext, displayName string, public bool) (res keybase1.TeamID, impTeamName keybase1.ImplicitTeamDisplayName, err error) {
lookupName, err := ResolveImplicitTeamDisplayName(ctx, g, displayName, public)
if err != nil {
return res, impTeamName, err
}
res, impTeamName, _, err = lookupImplicitTeamAndConflicts(ctx, g, displayName, lookupName)
if err != nil {
if _, ok := err.(TeamDoesNotExistError); ok {
if lookupName.ConflictInfo != nil {
// Don't create it if a conflict is specified.
// Unlikely a caller would know the conflict info if it didn't exist.
return res, impTeamName, err
}
// If the team does not exist, then let's create it
impTeamName = lookupName
res, err = CreateImplicitTeam(ctx, g, impTeamName)
return res, impTeamName, err
}
return res, impTeamName, err
}
return res, impTeamName, nil
}
func FormatImplicitTeamDisplayName(ctx context.Context, g *libkb.GlobalContext, impTeamName keybase1.ImplicitTeamDisplayName) (string, error) {
return formatImplicitTeamDisplayNameCommon(ctx, g, impTeamName, nil)
}
// Format an implicit display name, but order the specified username first in each of the writer and reader lists if it appears.
func FormatImplicitTeamDisplayNameWithUserFront(ctx context.Context, g *libkb.GlobalContext, impTeamName keybase1.ImplicitTeamDisplayName, frontName libkb.NormalizedUsername) (string, error) {
return formatImplicitTeamDisplayNameCommon(ctx, g, impTeamName, &frontName)
}
func formatImplicitTeamDisplayNameCommon(ctx context.Context, g *libkb.GlobalContext, impTeamName keybase1.ImplicitTeamDisplayName, optionalFrontName *libkb.NormalizedUsername) (string, error) {
var writerNames []string
for _, u := range impTeamName.Writers.KeybaseUsers {
writerNames = append(writerNames, u)
}
for _, u := range impTeamName.Writers.UnresolvedUsers {
writerNames = append(writerNames, u.String())
}
if optionalFrontName == nil {
sort.Strings(writerNames)
} else {
sortStringsFront(writerNames, optionalFrontName.String())
}
var readerNames []string
for _, u := range impTeamName.Readers.KeybaseUsers {
readerNames = append(readerNames, u)
}
for _, u := range impTeamName.Readers.UnresolvedUsers {
readerNames = append(readerNames, u.String())
}
if optionalFrontName == nil {
sort.Strings(readerNames)
} else {
sortStringsFront(readerNames, optionalFrontName.String())
}
var suffix string
if impTeamName.ConflictInfo != nil {
suffix = libkb.FormatImplicitTeamDisplayNameSuffix(*impTeamName.ConflictInfo)
}
if len(writerNames) == 0 {
return "", fmt.Errorf("invalid implicit team name: no writers")
}
return kbfs.NormalizeNamesInTLF(writerNames, readerNames, suffix)
}
// Sort a list of strings but order `front` in front IF it appears.
func sortStringsFront(ss []string, front string) {
sort.Slice(ss, func(i, j int) bool {
a := ss[i]
b := ss[j]
if a == front {
return true
}
if b == front {
return false
}
return a < b
})
}