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/* 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
66LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
67const char *filename;
68
69int 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, NULL);
102
103	ShowWindow(hwnd, iCmdShow);
104	UpdateWindow(hwnd);
105
106
107	while (GetMessage(&msg, NULL, 0, 0))
108		{
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		{
125	case WM_PAINT:
126		hdc = BeginPaint(hwnd, &ps);
127		GetClientRect(hwnd, &rect);
128                DrawText(hdc, "Seeding the PRNG. Please move the mouse!", -1,
129			&rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
130		EndPaint(hwnd, &ps);
131		return 0;
132
133        case WM_DESTROY:
134                PostQuitMessage(0);
135                return 0;
136                }
137
138        if (RAND_event(iMsg, wParam, lParam) == 1 && seeded == 0)
139                {
140                seeded = 1;
141                if (RAND_write_file(filename) <= 0)
142                        MessageBox(hwnd, "Couldn't write random file!",
143				"OpenSSL", MB_OK | MB_ICONERROR);
144                PostQuitMessage(0);
145                }
146
147	return DefWindowProc(hwnd, iMsg, wParam, lParam);
148	}
149