// SignTx signs every input of the given MsgTx by looking up (on the addr
// manager) the redeem script for each of them and constructing the signature
// script using that and the given raw signatures.
// This function must be called with the manager unlocked.
func SignTx(msgtx *wire.MsgTx, sigs TxSigs, mgr *waddrmgr.Manager, store *wtxmgr.Store) error {
// We use time.Now() here as we're not going to store the new TxRecord
// anywhere -- we just need it to pass to store.PreviousPkScripts().
rec, err := wtxmgr.NewTxRecordFromMsgTx(msgtx, time.Now())
if err != nil {
return newError(ErrTxSigning, "failed to construct TxRecord for signing", err)
}
pkScripts, err := store.PreviousPkScripts(rec, nil)
if err != nil {
return newError(ErrTxSigning, "failed to obtain pkScripts for signing", err)
}
for i, pkScript := range pkScripts {
if err = signMultiSigUTXO(mgr, msgtx, i, pkScript, sigs[i]); err != nil {
return err
}
}
return nil
}
