apps/winrand.c

   1 /* ====================================================================
   2  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  * ====================================================================
  48  *
  49  * This product includes cryptographic software written by Eric Young
  50  * (eay@cryptsoft.com).  This product includes software written by Tim
  51  * Hudson (tjh@cryptsoft.com).
  52  *
  53  */
  54
  55 /*-
  56  * Usage: winrand [filename]
  57  *
  58  * Collects entropy from mouse movements and other events and writes
  59  * random data to filename or .rnd
  60  */
  61
  62 #include <windows.h>
  63 #include <openssl/opensslv.h>
  64 #include <openssl/rand.h>
  65
  66 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
  67 const char *filename;
  68
  69 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
  70                    PSTR cmdline, int iCmdShow)
  71 {
  72     static char appname[] = "OpenSSL";
  73     HWND hwnd;
  74     MSG msg;
  75     WNDCLASSEX wndclass;
  76     char buffer[200];
  77
  78     if (cmdline[0] == '\0')
  79         filename = RAND_file_name(buffer, sizeof buffer);
  80     else
  81         filename = cmdline;
  82
  83     RAND_load_file(filename, -1);
  84
  85     wndclass.cbSize = sizeof(wndclass);
  86     wndclass.style = CS_HREDRAW | CS_VREDRAW;
  87     wndclass.lpfnWndProc = WndProc;
  88     wndclass.cbClsExtra = 0;
  89     wndclass.cbWndExtra = 0;
  90     wndclass.hInstance = hInstance;
  91     wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
  92     wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
  93     wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
  94     wndclass.lpszMenuName = NULL;
  95     wndclass.lpszClassName = appname;
  96     wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
  97     RegisterClassEx(&wndclass);
  98
  99     hwnd = CreateWindow(appname, OPENSSL_VERSION_TEXT,
 100                         WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
 101                         CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance,
 102                         NULL);
 103
 104     ShowWindow(hwnd, iCmdShow);
 105     UpdateWindow(hwnd);
 106
 107     while (GetMessage(&msg, NULL, 0, 0)) {
 108         TranslateMessage(&msg);
 109         DispatchMessage(&msg);
 110     }
 111
 112     return msg.wParam;
 113 }
 114
 115 LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
 116 {
 117     HDC hdc;
 118     PAINTSTRUCT ps;
 119     RECT rect;
 120     static int seeded = 0;
 121
 122     switch (iMsg) {
 123     case WM_PAINT:
 124         hdc = BeginPaint(hwnd, &ps);
 125         GetClientRect(hwnd, &rect);
 126         DrawText(hdc, "Seeding the PRNG. Please move the mouse!", -1,
 127                  &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
 128         EndPaint(hwnd, &ps);
 129         return 0;
 130
 131     case WM_DESTROY:
 132         PostQuitMessage(0);
 133         return 0;
 134     }
 135
 136     if (RAND_event(iMsg, wParam, lParam) == 1 && seeded == 0) {
 137         seeded = 1;
 138         if (RAND_write_file(filename) <= 0)
 139             MessageBox(hwnd, "Couldn't write random file!",
 140                        "OpenSSL", MB_OK | MB_ICONERROR);
 141         PostQuitMessage(0);
 142     }
 143
 144     return DefWindowProc(hwnd, iMsg, wParam, lParam);
 145 }