1/*
2 * Copyright (C) 2013 Apple Inc. 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 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <TargetConditionals.h>
27
28#if !defined(TARGET_OS_IPHONE) || !TARGET_OS_IPHONE
29
30#include "DynamicLinkerInterposing.h"
31#include <Carbon/Carbon.h>
32
33static int sSecureInputEnableCount;
34
35static OSStatus shimEnableSecureEventInput()
36{
37    ++sSecureInputEnableCount;
38    return noErr;
39}
40
41static OSStatus shimDisableSecureEventInput()
42{
43    if (!sSecureInputEnableCount)
44        return paramErr;
45    --sSecureInputEnableCount;
46    return noErr;
47}
48
49static Boolean shimIsSecureEventInputEnabled()
50{
51    return sSecureInputEnableCount;
52}
53
54DYLD_INTERPOSE(shimEnableSecureEventInput, EnableSecureEventInput)
55DYLD_INTERPOSE(shimDisableSecureEventInput, DisableSecureEventInput)
56DYLD_INTERPOSE(shimIsSecureEventInputEnabled, IsSecureEventInputEnabled)
57
58#endif // !defined(TARGET_OS_IPHONE) || !TARGET_OS_IPHONE
59