winrand.c revision 296465 
1/* apps/winrand.c */
2/* ====================================================================
3 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in
14 *    the documentation and/or other materials provided with the
15 *    distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 *    software must display the following acknowledgment:
19 *    "This product includes software developed by the OpenSSL Project
20 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 *    endorse or promote products derived from this software without
24 *    prior written permission. For written permission, please contact
25 *    openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 *    nor may "OpenSSL" appear in their names without prior written
29 *    permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 *    acknowledgment:
33 *    "This product includes software developed by the OpenSSL Project
34 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com).  This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56/*-
57 * Usage: winrand [filename]
58 *
59 * Collects entropy from mouse movements and other events and writes
60 * random data to filename or .rnd
61 */
62
63#include <windows.h>
64#include <openssl/opensslv.h>
65#include <openssl/rand.h>
66
67LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
68const char *filename;
69
70int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
71                   PSTR cmdline, int iCmdShow)
72{
73    static char appname[] = "OpenSSL";
74    HWND hwnd;
75    MSG msg;
76    WNDCLASSEX wndclass;
77    char buffer[200];
78
79    if (cmdline[0] == '\0')
80        filename = RAND_file_name(buffer, sizeof buffer);
81    else
82        filename = cmdline;
83
84    RAND_load_file(filename, -1);
85
86    wndclass.cbSize = sizeof(wndclass);
87    wndclass.style = CS_HREDRAW | CS_VREDRAW;
88    wndclass.lpfnWndProc = WndProc;
89    wndclass.cbClsExtra = 0;
90    wndclass.cbWndExtra = 0;
91    wndclass.hInstance = hInstance;
92    wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
93    wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
94    wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
95    wndclass.lpszMenuName = NULL;
96    wndclass.lpszClassName = appname;
97    wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
98    RegisterClassEx(&wndclass);
99
100    hwnd = CreateWindow(appname, OPENSSL_VERSION_TEXT,
101                        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
102                        CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance,
103                        NULL);
104
105    ShowWindow(hwnd, iCmdShow);
106    UpdateWindow(hwnd);
107
108    while (GetMessage(&msg, NULL, 0, 0)) {
109        TranslateMessage(&msg);
110        DispatchMessage(&msg);
111    }
112
113    return msg.wParam;
114}
115
116LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
117{
118    HDC hdc;
119    PAINTSTRUCT ps;
120    RECT rect;
121    static int seeded = 0;
122
123    switch (iMsg) {
124    case WM_PAINT:
125        hdc = BeginPaint(hwnd, &ps);
126        GetClientRect(hwnd, &rect);
127        DrawText(hdc, "Seeding the PRNG. Please move the mouse!", -1,
128                 &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
129        EndPaint(hwnd, &ps);
130        return 0;
131
132    case WM_DESTROY:
133        PostQuitMessage(0);
134        return 0;
135    }
136
137    if (RAND_event(iMsg, wParam, lParam) == 1 && seeded == 0) {
138        seeded = 1;
139        if (RAND_write_file(filename) <= 0)
140            MessageBox(hwnd, "Couldn't write random file!",
141                       "OpenSSL", MB_OK | MB_ICONERROR);
142        PostQuitMessage(0);
143    }
144
145    return DefWindowProc(hwnd, iMsg, wParam, lParam);
146}
147