diff options
| -rw-r--r-- | src/qt/winshutdownmonitor.cpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/qt/winshutdownmonitor.cpp b/src/qt/winshutdownmonitor.cpp index f8f9bf45b3..a06f42f66e 100644 --- a/src/qt/winshutdownmonitor.cpp +++ b/src/qt/winshutdownmonitor.cpp @@ -6,11 +6,14 @@ #if defined(Q_OS_WIN) && QT_VERSION >= 0x050000 #include "init.h" +#include "util.h" #include <windows.h> #include <QDebug> +#include <openssl/rand.h> + // If we don't want a message to be processed by Qt, return true and set result to // the value that the window procedure should return. Otherwise return false. bool WinShutdownMonitor::nativeEventFilter(const QByteArray &eventType, void *pMessage, long *pnResult) @@ -19,6 +22,16 @@ bool WinShutdownMonitor::nativeEventFilter(const QByteArray &eventType, void *pM MSG *pMsg = static_cast<MSG *>(pMessage); + // Seed OpenSSL PRNG with Windows event data (e.g. mouse movements and other user interactions) + if (RAND_event(pMsg->message, pMsg->wParam, pMsg->lParam) == 0) { + // Warn only once as this is performance-critical + static bool warned = false; + if (!warned) { + LogPrint("%s: OpenSSL RAND_event() failed to seed OpenSSL PRNG with enough data.\n", __func__); + warned = true; + } + } + switch(pMsg->message) { case WM_QUERYENDSESSION: @@ -45,13 +58,13 @@ void WinShutdownMonitor::registerShutdownBlockReason(const QString& strReason, c typedef BOOL (WINAPI *PSHUTDOWNBRCREATE)(HWND, LPCWSTR); PSHUTDOWNBRCREATE shutdownBRCreate = (PSHUTDOWNBRCREATE)GetProcAddress(GetModuleHandleA("User32.dll"), "ShutdownBlockReasonCreate"); if (shutdownBRCreate == NULL) { - qWarning() << "registerShutdownBlockReason : GetProcAddress for ShutdownBlockReasonCreate failed"; + qWarning() << "registerShutdownBlockReason: GetProcAddress for ShutdownBlockReasonCreate failed"; return; } if (shutdownBRCreate(mainWinId, strReason.toStdWString().c_str())) - qWarning() << "registerShutdownBlockReason : Successfully registered: " + strReason; + qWarning() << "registerShutdownBlockReason: Successfully registered: " + strReason; else - qWarning() << "registerShutdownBlockReason : Failed to register: " + strReason; + qWarning() << "registerShutdownBlockReason: Failed to register: " + strReason; } #endif |