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// Copyright (c) 2011-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_QT_PAYMENTSERVER_H
#define BITCOIN_QT_PAYMENTSERVER_H
// This class handles payment requests from clicking on
// bitcoin: URIs
//
// This is somewhat tricky, because we have to deal with
// the situation where the user clicks on a link during
// startup/initialization, when the splash-screen is up
// but the main window (and the Send Coins tab) is not.
//
// So, the strategy is:
//
// Create the server, and register the event handler,
// when the application is created. Save any URIs
// received at or during startup in a list.
//
// When startup is finished and the main window is
// shown, a signal is sent to slot uiReady(), which
// emits a receivedURI() signal for any payment
// requests that happened during startup.
//
// After startup, receivedURI() happens as usual.
//
// This class has one more feature: a static
// method that finds URIs passed in the command line
// and, if a server is running in another process,
// sends them to the server.
//
#include <qt/paymentrequestplus.h>
#include <qt/walletmodel.h>
#include <QObject>
#include <QString>
class OptionsModel;
QT_BEGIN_NAMESPACE
class QApplication;
class QByteArray;
class QLocalServer;
class QNetworkAccessManager;
class QNetworkReply;
class QSslError;
class QUrl;
QT_END_NAMESPACE
// BIP70 max payment request size in bytes (DoS protection)
static const qint64 BIP70_MAX_PAYMENTREQUEST_SIZE = 50000;
class PaymentServer : public QObject
{
Q_OBJECT
public:
// Parse URIs on command line
// Returns false on error
static void ipcParseCommandLine(interface::Node& node, int argc, char *argv[]);
// Returns true if there were URIs on the command line
// which were successfully sent to an already-running
// process.
// Note: if a payment request is given, SelectParams(MAIN/TESTNET)
// will be called so we startup in the right mode.
static bool ipcSendCommandLine();
// parent should be QApplication object
explicit PaymentServer(QObject* parent, bool startLocalServer = true);
~PaymentServer();
// Load root certificate authorities. Pass nullptr (default)
// to read from the file specified in the -rootcertificates setting,
// or, if that's not set, to use the system default root certificates.
// If you pass in a store, you should not X509_STORE_free it: it will be
// freed either at exit or when another set of CAs are loaded.
static void LoadRootCAs(X509_STORE* store = nullptr);
// Return certificate store
static X509_STORE* getCertStore();
// OptionsModel is used for getting proxy settings and display unit
void setOptionsModel(OptionsModel *optionsModel);
// Verify that the payment request network matches the client network
static bool verifyNetwork(interface::Node& node, const payments::PaymentDetails& requestDetails);
// Verify if the payment request is expired
static bool verifyExpired(const payments::PaymentDetails& requestDetails);
// Verify the payment request size is valid as per BIP70
static bool verifySize(qint64 requestSize);
// Verify the payment request amount is valid
static bool verifyAmount(const CAmount& requestAmount);
Q_SIGNALS:
// Fired when a valid payment request is received
void receivedPaymentRequest(SendCoinsRecipient);
// Fired when a valid PaymentACK is received
void receivedPaymentACK(const QString &paymentACKMsg);
// Fired when a message should be reported to the user
void message(const QString &title, const QString &message, unsigned int style);
public Q_SLOTS:
// Signal this when the main window's UI is ready
// to display payment requests to the user
void uiReady();
// Submit Payment message to a merchant, get back PaymentACK:
void fetchPaymentACK(WalletModel* walletModel, const SendCoinsRecipient& recipient, QByteArray transaction);
// Handle an incoming URI, URI with local file scheme or file
void handleURIOrFile(const QString& s);
private Q_SLOTS:
void handleURIConnection();
void netRequestFinished(QNetworkReply*);
void reportSslErrors(QNetworkReply*, const QList<QSslError> &);
void handlePaymentACK(const QString& paymentACKMsg);
protected:
// Constructor registers this on the parent QApplication to
// receive QEvent::FileOpen and QEvent:Drop events
bool eventFilter(QObject *object, QEvent *event);
private:
static bool readPaymentRequestFromFile(const QString& filename, PaymentRequestPlus& request);
bool processPaymentRequest(const PaymentRequestPlus& request, SendCoinsRecipient& recipient);
void fetchRequest(const QUrl& url);
// Setup networking
void initNetManager();
bool saveURIs; // true during startup
QLocalServer* uriServer;
QNetworkAccessManager* netManager; // Used to fetch payment requests
OptionsModel *optionsModel;
};
#endif // BITCOIN_QT_PAYMENTSERVER_H
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