installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / shared / GenRandom.h

diff --git a/node_modules/node-pty/deps/winpty/src/shared/GenRandom.h b/node_modules/node-pty/deps/winpty/src/shared/GenRandom.h
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+// Copyright (c) 2016 Ryan Prichard
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#ifndef WINPTY_GEN_RANDOM_H
+#define WINPTY_GEN_RANDOM_H
+
+// The original MinGW requires that we include wincrypt.h.  With MinGW-w64 and
+// MSVC, including windows.h is sufficient.
+#include <windows.h>
+#include <wincrypt.h>
+
+#include <string>
+
+#include "OsModule.h"
+
+class GenRandom {
+    typedef BOOLEAN WINAPI RtlGenRandom_t(PVOID, ULONG);
+
+    OsModule m_advapi32;
+    RtlGenRandom_t *m_rtlGenRandom = nullptr;
+    bool m_cryptProvIsValid = false;
+    HCRYPTPROV m_cryptProv = 0;
+
+public:
+    GenRandom();
+    ~GenRandom();
+    bool fillBuffer(void *buffer, size_t size);
+    std::string randomBytes(size_t numBytes);
+    std::wstring randomHexString(size_t numBytes);
+    std::wstring uniqueName();
+
+    // Return true if the crypto context was successfully initialized.
+    bool valid() const {
+        return m_rtlGenRandom != nullptr || m_cryptProvIsValid;
+    }
+};
+
+#endif // WINPTY_GEN_RANDOM_H