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walletmodel.h
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walletmodel.h
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// Copyright (c) 2011-2014 The Bitcoin developers
// Copyright (c) 2014-2016 The Dash developers
// Copyright (c) 2017-2020 The PIVX developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef PIVX_QT_WALLETMODEL_H
#define PIVX_QT_WALLETMODEL_H
#if defined(HAVE_CONFIG_H)
#include "config/pivx-config.h"
#endif
#include "interfaces/wallet.h"
#include "key.h"
#include "key_io.h"
#include "operationresult.h"
#include "support/allocators/zeroafterfree.h"
#include "pairresult.h"
#include <map>
#include <vector>
#include <QObject>
#include <QFuture>
#include <QSettings>
class AddressTableModel;
class ClientModel;
class OptionsModel;
class RecentRequestsTableModel;
class TransactionTableModel;
class WalletModelTransaction;
class CCoinControl;
class CKeyID;
class COutPoint;
class OutPointWrapper;
class COutput;
class CPubKey;
class CWallet;
class uint256;
namespace interfaces {
class Handler;
};
QT_BEGIN_NAMESPACE
class QTimer;
QT_END_NAMESPACE
class SendCoinsRecipient
{
public:
explicit SendCoinsRecipient() : amount(0), nVersion(SendCoinsRecipient::CURRENT_VERSION) {}
explicit SendCoinsRecipient(const QString& addr, const QString& label, const CAmount& amount, const QString& message) : address(addr), label(label), amount(amount), message(message), nVersion(SendCoinsRecipient::CURRENT_VERSION) {}
// If from an insecure payment request, this is used for storing
// the addresses, e.g. address-A<br />address-B<br />address-C.
// Info: As we don't need to process addresses in here when using
// payment requests, we can abuse it for displaying an address list.
// Todo: This is a hack, should be replaced with a cleaner solution!
QString address{};
QString label{};
// Cold staking.
bool isP2CS{false};
QString ownerAddress{};
// Quick flag to not have to check the address type more than once.
bool isShieldedAddr{false};
// Whether to subtract the tx fee from this recipient
bool fSubtractFee{false};
// Amount
CAmount amount{0};
// If from a payment request, this is used for storing the memo
QString message{};
// serialized string to ensure load/store is lossless
std::string sPaymentRequest{};
// Empty if no authentication or invalid signature/cert/etc.
QString authenticatedMerchant{};
static const int CURRENT_VERSION = 1;
int nVersion;
SERIALIZE_METHODS(SendCoinsRecipient, obj)
{
std::string address_str, label_str, message_str, auth_merchant_str;
SER_WRITE(obj, address_str = obj.address.toStdString());
SER_WRITE(obj, label_str = obj.label.toStdString());
SER_WRITE(obj, message_str = obj.message.toStdString());
SER_WRITE(obj, auth_merchant_str = obj.authenticatedMerchant.toStdString());
READWRITE(obj.nVersion, address_str, label_str, obj.amount, message_str, obj.sPaymentRequest, auth_merchant_str);
SER_READ(obj, obj.address = QString::fromStdString(address_str));
SER_READ(obj, obj.label = QString::fromStdString(label_str));
SER_READ(obj, obj.message = QString::fromStdString(message_str));
SER_READ(obj, obj.authenticatedMerchant = QString::fromStdString(auth_merchant_str));
}
};
/** Interface to PIVX wallet from Qt view code. */
class WalletModel : public QObject
{
Q_OBJECT
public:
explicit WalletModel(CWallet* wallet, OptionsModel* optionsModel, QObject* parent = 0);
~WalletModel();
enum StatusCode // Returned by sendCoins
{
OK,
InvalidAmount,
InvalidAddress,
AmountExceedsBalance,
AmountWithFeeExceedsBalance,
DuplicateAddress,
TransactionCreationFailed,
TransactionCheckFailed,
TransactionCommitFailed,
StakingOnlyUnlocked,
InsaneFee,
CannotCreateInternalAddress
};
enum EncryptionStatus {
Unencrypted, // !wallet->IsCrypted()
Locked, // wallet->IsCrypted() && wallet->IsLocked()
Unlocked, // wallet->IsCrypted() && !wallet->IsLocked()
UnlockedForStaking // wallet->IsCrypted() && !wallet->IsLocked() && wallet->fWalletUnlockStaking
};
OptionsModel* getOptionsModel();
AddressTableModel* getAddressTableModel();
TransactionTableModel* getTransactionTableModel();
RecentRequestsTableModel* getRecentRequestsTableModel();
void resetWalletOptions(QSettings& settings);
bool isTestNetwork() const;
bool isRegTestNetwork() const;
bool isShutdownRequested();
/** Whether cold staking is enabled or disabled in the network **/
bool isColdStakingNetworkelyEnabled() const;
bool isSaplingInMaintenance() const;
bool isV6Enforced() const;
CAmount getMinColdStakingAmount() const;
/* current staking status from the miner thread **/
bool isStakingStatusActive() const;
bool hasWallet() { return wallet; };
bool isHDEnabled() const;
bool isSaplingWalletEnabled() const;
bool upgradeWallet(std::string& upgradeError);
// Returns the path to the first wallet db (future: add multi-wallet support)
QString getWalletPath();
interfaces::WalletBalances GetWalletBalances() { return m_cached_balances; };
CAmount getBalance(const CCoinControl* coinControl = nullptr, bool fIncludeDelegated = true, bool fUnlockedOnly = false, bool fIncludeShielded = true) const;
CAmount getUnlockedBalance(const CCoinControl* coinControl = nullptr, bool fIncludeDelegated = true, bool fIncludeShielded = true) const;
CAmount getLockedBalance() const;
bool haveWatchOnly() const;
CAmount getDelegatedBalance() const;
bool isColdStaking() const;
void getAvailableP2CSCoins(std::vector<COutput>& vCoins) const;
EncryptionStatus getEncryptionStatus() const;
bool isWalletUnlocked() const;
bool isWalletLocked(bool fFullUnlocked = true) const;
void emitBalanceChanged(); // Force update of UI-elements even when no values have changed
// Check address for validity
bool validateAddress(const QString& address);
// Check address for validity and type (whether cold staking address or not)
bool validateAddress(const QString& address, bool fStaking);
// Check address for validity and type (whether cold staking address or not),
// plus return isShielded = true if the parsed address is a valid shielded address.
bool validateAddress(const QString& address, bool fStaking, bool& isShielded);
// Return the address from where the shielded spend is taking the funds from (if possible)
Optional<QString> getShieldedAddressFromSpendDesc(const uint256& txHash, int index);
// Return status record for SendCoins, contains error id + information
struct SendCoinsReturn {
SendCoinsReturn(StatusCode status = OK) : status(status) {}
SendCoinsReturn(CWallet::CommitResult _commitRes) : commitRes(_commitRes)
{
status = (_commitRes.status == CWallet::CommitStatus::OK ? OK : TransactionCommitFailed);
}
StatusCode status;
CWallet::CommitResult commitRes;
};
void setWalletDefaultFee(CAmount fee = DEFAULT_TRANSACTION_FEE);
bool hasWalletCustomFee();
bool getWalletCustomFee(CAmount& nFeeRet);
void setWalletCustomFee(bool fUseCustomFee, const CAmount nFee = DEFAULT_TRANSACTION_FEE);
void setWalletStakeSplitThreshold(const CAmount nStakeSplitThreshold);
CAmount getWalletStakeSplitThreshold() const;
/* Minimum stake split threshold*/
double getSSTMinimum() const;
const CWalletTx* getTx(uint256 id);
// prepare transaction for getting txfee before sending coins
SendCoinsReturn prepareTransaction(WalletModelTransaction* transaction, const CCoinControl* coinControl = NULL, bool fIncludeDelegations = true);
// Send coins to a list of recipients
SendCoinsReturn sendCoins(WalletModelTransaction& transaction);
// Prepare shielded transaction.
OperationResult PrepareShieldedTransaction(WalletModelTransaction* modelTransaction,
bool fromTransparent,
const CCoinControl* coinControl = nullptr);
// Wallet encryption
bool setWalletEncrypted(bool encrypted, const SecureString& passphrase);
// Passphrase only needed when unlocking
bool setWalletLocked(bool locked, const SecureString& passPhrase = SecureString(), bool stakingOnly = false);
// Method used to "lock" the wallet only for staking purposes. Just a flag that should prevent possible movements in the wallet.
// Passphrase only needed when unlocking.
bool lockForStakingOnly(const SecureString& passPhrase = SecureString());
bool changePassphrase(const SecureString& oldPass, const SecureString& newPass);
// Is wallet unlocked for staking only?
bool isStakingOnlyUnlocked();
// Wallet backup
bool backupWallet(const QString& filename);
// RAI object for unlocking wallet, returned by requestUnlock()
class UnlockContext
{
public:
UnlockContext(WalletModel *wallet, bool valid, const WalletModel::EncryptionStatus& status_before);
~UnlockContext();
bool isValid() const { return valid; }
// Copy constructor is disabled
UnlockContext(const UnlockContext&) = delete;
// Copy operator and constructor transfer the context
UnlockContext(UnlockContext&& obj) { CopyFrom(std::move(obj)); }
UnlockContext& operator=(UnlockContext&& rhs) { CopyFrom(std::move(rhs)); return *this; }
private:
WalletModel *wallet;
bool valid;
WalletModel::EncryptionStatus was_status; // original status
mutable bool relock; // mutable, as it can be set to false by copying
UnlockContext& operator=(const UnlockContext&) = default;
void CopyFrom(UnlockContext&& rhs);
};
UnlockContext requestUnlock();
bool getPubKey(const CKeyID& address, CPubKey& vchPubKeyOut) const;
int64_t getCreationTime() const;
int64_t getKeyCreationTime(const CPubKey& key);
int64_t getKeyCreationTime(const CTxDestination& address);
int64_t getKeyCreationTime(const std::string& address);
int64_t getKeyCreationTime(const libzcash::SaplingPaymentAddress& address);
PairResult getNewAddress(Destination& ret, std::string label = "") const;
/**
* Return a new address used to receive for delegated cold stake purpose.
*/
PairResult getNewStakingAddress(Destination& ret, std::string label = "") const;
//! Return a new shielded address.
PairResult getNewShieldedAddress(QString& shieldedAddrRet, std::string strLabel = "");
//! Return new wallet rescan reserver
WalletRescanReserver getRescanReserver() const { return WalletRescanReserver(wallet); }
bool whitelistAddressFromColdStaking(const QString &addressStr);
bool blacklistAddressFromColdStaking(const QString &address);
bool updateAddressBookPurpose(const QString &addressStr, const std::string& purpose);
std::string getLabelForAddress(const CTxDestination& address);
QString getSaplingAddressString(const CWalletTx* wtx, const SaplingOutPoint& op) const;
bool getKeyId(const CTxDestination& address, CKeyID& keyID);
bool getKey(const CKeyID& keyID, CKey& key) const { return wallet->GetKey(keyID, key); }
bool haveKey(const CKeyID& keyID) const { return wallet->HaveKey(keyID); }
bool addKeys(const CKey& key, const CPubKey& pubkey, WalletRescanReserver& reserver);
bool isMine(const CWDestination& address);
bool isMine(const QString& addressStr);
bool IsShieldedDestination(const CWDestination& address);
bool isUsed(CTxDestination address);
bool getMNCollateralCandidate(COutPoint& outPoint);
// Depth of a wallet transaction or -1 if not found
int getWalletTxDepth(const uint256& txHash) const;
bool isSpent(const COutPoint& outpoint) const;
class ListCoinsKey {
public:
QString address;
bool isChange;
Optional<QString> stakerAddress; // used only for P2CS utxo
bool operator==(const ListCoinsKey& key2) const {
return address == key2.address && stakerAddress == key2.stakerAddress;
}
bool operator<(const ListCoinsKey& key2) const {
return this->address < key2.address;
}
};
class ListCoinsValue {
public:
ListCoinsValue() = delete;
ListCoinsValue(const uint256& _txhash, int _outIndex, CAmount _nValue, int64_t _nTime, int _nDepth) :
txhash(_txhash), outIndex(_outIndex), nValue(_nValue), nTime(_nTime), nDepth(_nDepth)
{}
uint256 txhash;
int outIndex;
CAmount nValue;
int64_t nTime;
int nDepth;
};
void listCoins(std::map<ListCoinsKey, std::vector<ListCoinsValue>>& mapCoins, bool fSelectTransparent) const;
void listCoins(std::map<ListCoinsKey, std::vector<ListCoinsValue>>& mapCoins) const;
void listAvailableNotes(std::map<ListCoinsKey, std::vector<ListCoinsValue>>& mapCoins) const;
bool isLockedCoin(uint256 hash, unsigned int n) const;
void lockCoin(COutPoint& output);
void unlockCoin(COutPoint& output);
std::set<COutPoint> listLockedCoins();
void loadReceiveRequests(std::vector<std::string>& vReceiveRequests);
bool saveReceiveRequest(const std::string& sAddress, const int64_t nId, const std::string& sRequest);
ClientModel& clientModel() const { return *m_client_model; }
void setClientModel(ClientModel* client_model);
uint256 getLastBlockProcessed() const;
int getLastBlockProcessedNum() const;
bool hasForceCheckBalance() { return fForceCheckBalanceChanged; }
void setCacheNumBlocks(int _cachedNumBlocks) { cachedNumBlocks = _cachedNumBlocks; }
int getCacheNumBLocks() { return cachedNumBlocks; }
void setCacheBlockHash(const uint256& _blockHash) { m_cached_best_block_hash = _blockHash; }
void setfForceCheckBalanceChanged(bool _fForceCheckBalanceChanged) { fForceCheckBalanceChanged = _fForceCheckBalanceChanged; }
Q_INVOKABLE void checkBalanceChanged(const interfaces::WalletBalances& new_balances);
bool processBalanceChangeInternal();
void stop();
private:
CWallet* wallet{nullptr};
// Simple Wallet interface.
// todo: Goal would be to move every CWallet* call to the wallet wrapper and
// in the model only perform the data organization (and QT wrappers) to be presented on the UI.
interfaces::Wallet walletWrapper;
// Listeners
std::unique_ptr<interfaces::Handler> m_handler_notify_status_changed;
std::unique_ptr<interfaces::Handler> m_handler_notify_addressbook_changed;
std::unique_ptr<interfaces::Handler> m_handler_notify_sst_changed;
std::unique_ptr<interfaces::Handler> m_handler_notify_transaction_changed;
std::unique_ptr<interfaces::Handler> m_handler_show_progress;
std::unique_ptr<interfaces::Handler> m_handler_notify_watch_only_changed;
std::unique_ptr<interfaces::Handler> m_handler_notify_walletbacked;
ClientModel* m_client_model;
bool fHaveWatchOnly;
bool fForceCheckBalanceChanged;
// Wallet has an options model for wallet-specific options
// (transaction fee, for example)
OptionsModel* optionsModel;
AddressTableModel* addressTableModel;
TransactionTableModel* transactionTableModel;
RecentRequestsTableModel* recentRequestsTableModel;
// Cache balance to be able to detect changes
interfaces::WalletBalances m_cached_balances;
EncryptionStatus cachedEncryptionStatus;
int cachedNumBlocks;
uint256 m_cached_best_block_hash;
QTimer* pollTimer;
QFuture<void> pollFuture;
interfaces::WalletBalances getBalances() { return walletWrapper.getBalances(); };
void subscribeToCoreSignals();
void unsubscribeFromCoreSignals();
Q_SIGNALS:
// Signal that balance in wallet changed
void balanceChanged(const interfaces::WalletBalances& walletBalances);
// Encryption status of wallet changed
void encryptionStatusChanged(int status);
// Signal emitted when wallet needs to be unlocked
// It is valid behaviour for listeners to keep the wallet locked after this signal;
// this means that the unlocking failed or was cancelled.
void requireUnlock();
// Fired when a message should be reported to the user
void message(const QString& title, const QString& body, unsigned int style, bool* ret = nullptr);
// Coins sent: from wallet, to recipient, in (serialized) transaction:
void coinsSent(CWallet* wallet, const SendCoinsRecipient& recipient, const QByteArray& transaction);
// Show progress dialog e.g. for rescan
void showProgress(const QString& title, int nProgress);
// Watch-only address added
void notifyWatchonlyChanged(bool fHaveWatchonly);
// Receive tab address may have changed
void notifyReceiveAddressChanged();
/** notify stake-split threshold changed */
void notifySSTChanged(const double sstVal);
public Q_SLOTS:
/* Wallet balances changes */
void balanceNotify();
/* Update transaction model after wallet changes */
void updateTxModelData();
/* Balance polling process finished */
void pollFinished();
/* Wallet status might have changed */
void updateStatus();
/* New transaction, or transaction changed status */
void updateTransaction();
/* New, updated or removed address book entry */
void updateAddressBook(const QString& address, const QString& label, bool isMine, const QString& purpose, int status);
/* Watch-only added */
void updateWatchOnlyFlag(bool fHaveWatchonly);
/* Current, immature or unconfirmed balance might have changed - emit 'balanceChanged' if so */
void pollBalanceChanged();
/* Update address book labels in the database */
bool updateAddressBookLabels(const CWDestination& address, const std::string& strName, const std::string& strPurpose);
};
#endif // PIVX_QT_WALLETMODEL_H