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SegWit wallet support

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This introduces two command line flags (-addresstype and -changetype) which control
the type of addresses/outputs created by the GUI and RPCs. Certain RPCs allow
overriding these (`getnewaddress` and `getrawchangeaddress`). Supported types
are "legacy" (P2PKH and P2SH-multisig), "p2sh-segwit" (P2SH-P2WPKH and P2SH-P2WSH-multisig),
and "bech32" (P2WPKH and P2WSH-multisig).

A few utility functions are added to the wallet to construct different address type
and to add the necessary entries to the wallet file to be compatible with earlier
versions (see `CWallet::LearnRelatedScripts`, `GetDestinationForKey`,
`GetAllDestinationsForKey`, `CWallet::AddAndGetDestinationForScript`).
This commit is contained in:
Pieter Wuille
2017-11-30 16:49:11 -08:00
parent f37c64e477
commit 940a21932b
22 changed files with 278 additions and 61 deletions
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35
src/qt/paymentserver.cpp
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@@ -636,27 +636,24 @@ void PaymentServer::fetchPaymentACK(CWallet* wallet, const SendCoinsRecipient& r
// Create a new refund address, or re-use:
QString account = tr("Refund from %1").arg(recipient.authenticatedMerchant);
std::string strAccount = account.toStdString();
std::set<CTxDestination> refundAddresses = wallet->GetAccountAddresses(strAccount);
if (!refundAddresses.empty()) {
CScript s = GetScriptForDestination(*refundAddresses.begin());
CPubKey newKey;
if (wallet->GetKeyFromPool(newKey)) {
// BIP70 requests encode the scriptPubKey directly, so we are not restricted to address
// types supported by the receiver. As a result, we choose the address format we also
// use for change. Despite an actual payment and not change, this is a close match:
// it's the output type we use subject to privacy issues, but not restricted by what
// other software supports.
wallet->LearnRelatedScripts(newKey, g_change_type);
CTxDestination dest = GetDestinationForKey(newKey, g_change_type);
wallet->SetAddressBook(dest, strAccount, "refund");
CScript s = GetScriptForDestination(dest);
payments::Output* refund_to = payment.add_refund_to();
refund_to->set_script(&s[0], s.size());
}
else {
CPubKey newKey;
if (wallet->GetKeyFromPool(newKey)) {
CKeyID keyID = newKey.GetID();
wallet->SetAddressBook(keyID, strAccount, "refund");
CScript s = GetScriptForDestination(keyID);
payments::Output* refund_to = payment.add_refund_to();
refund_to->set_script(&s[0], s.size());
}
else {
// This should never happen, because sending coins should have
// just unlocked the wallet and refilled the keypool.
qWarning() << "PaymentServer::fetchPaymentACK: Error getting refund key, refund_to not set";
}
} else {
// This should never happen, because sending coins should have
// just unlocked the wallet and refilled the keypool.
qWarning() << "PaymentServer::fetchPaymentACK: Error getting refund key, refund_to not set";
}
int length = payment.ByteSize();