func (ul *unclaimedLock) Claim(ctx *context.T, call rpc.ServerCall, name string) (security.Blessings, error) {
vlog.Infof("Claim called by %q", call.Security().RemoteBlessings())
if strings.ContainsAny(name, security.ChainSeparator) {
// TODO(ataly, ashankar): We have to error out in this case because of the current
// neighborhood setup wherein the neighborhood-name of a claimed lock's mounttable is
// the same as the locks's name. Since neighborhood-names aren't allowed to contain
// slashes, we have to disallow slashes in the lock name as well.
return security.Blessings{}, NewErrInvalidLockName(ctx, name, security.ChainSeparator)
}
var (
principal = v23.GetPrincipal(ctx)
origDefault, _ = principal.BlessingStore().Default()
restore = func() error {
// TODO(ataly): Remove roots of current default blessing if needed
// (i.e., if current default != origDefault).
if err := principal.BlessingStore().SetDefault(origDefault); err != nil {
return verror.Convert(verror.ErrInternal, ctx, err)
}
return nil
}
)
defer ul.mu.Unlock()
ul.mu.Lock()
if ul.claimed == nil {
return security.Blessings{}, NewErrLockAlreadyClaimed(ctx)
}
keyBlessing, err := ul.makeKey(principal, name, call.Security().RemoteBlessings().PublicKey())
if err != nil {
restore()
return security.Blessings{}, verror.Convert(verror.ErrInternal, ctx, err)
}
// Create a file in the config directory to indicate that lock has been claimed.
f, err := os.Create(filepath.Join(ul.configDir, claimFileName))
if err != nil {
restore()
return security.Blessings{}, verror.Convert(verror.ErrInternal, ctx, err)
}
f.Close()
close(ul.claimed)
ul.claimed = nil
vlog.Infof("Lock successfullly claimed with name %q", name)
return keyBlessing, nil
}
func ThrowSwiftError(ctx *context.T, err error, swiftVErrorStructPtr unsafe.Pointer) {
id := verror.ErrorID(err)
actionCode := verror.Action(err)
vErr := verror.Convert(verror.IDAction{id, actionCode}, ctx, err)
pcs := verror.Stack(vErr)
stacktrace := pcs.String()
msg := vErr.Error()
var swiftErrorPtr *C.SwiftVError = (*C.SwiftVError)(swiftVErrorStructPtr)
(*swiftErrorPtr).identity = C.CString((string)(id))
(*swiftErrorPtr).actionCode = C._GoUint32(actionCode)
(*swiftErrorPtr).msg = C.CString(msg)
(*swiftErrorPtr).stacktrace = C.CString(stacktrace)
}
func (r *recvKeyService) Grant(ctx *context.T, call rpc.ServerCall, lockName string) error {
key := call.GrantedBlessings()
remoteBlessingNames, _ := security.RemoteBlessingNames(ctx, call.Security())
fmt.Printf("Received key %v for lock %v from user %v\n", key, lockName, vUser(remoteBlessingNames...))
if !r.confirmRecvKey() {
return NewErrKeyRejected(ctx, fmt.Sprintf("%v", key), lockName)
}
if err := saveKeyForLock(ctx, key, lockName); err != nil {
return verror.Convert(verror.ErrInternal, ctx, err)
}
fmt.Println("Key successfully saved")
r.notify <- nil
return nil
}