1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CookieStorageShimLibrary.h"
#if ENABLE(NETWORK_PROCESS)
#include <WebCore/DynamicLinkerInterposing.h>
extern "C" CFDictionaryRef _CFHTTPCookieStorageCopyRequestHeaderFieldsForURL(CFAllocatorRef inAllocator, CFHTTPCookieStorageRef inCookieStorage, CFURLRef inRequestURL);
namespace WebKit {
extern "C" void WebKitCookieStorageShimInitialize(const CookieStorageShimCallbacks&);
static CookieStorageShimCallbacks cookieStorageShimCallbacks;
class ShimProtector {
public:
ShimProtector() { ++m_count; }
~ShimProtector() { --m_count; }
static unsigned count() { return m_count; }
private:
__thread static unsigned m_count;
};
__thread unsigned ShimProtector::m_count = 0;
static CFDictionaryRef shimCFHTTPCookieStorageCopyRequestHeaderFieldsForURL(CFAllocatorRef inAllocator, CFHTTPCookieStorageRef inCookieStorage, CFURLRef inRequestURL)
{
ShimProtector protector;
do {
// Protect against uninitialized callbacks:
if (!cookieStorageShimCallbacks.cookieStorageCopyRequestHeaderFieldsForURL)
break;
// Protect against accidental recursion:
if (ShimProtector::count() > 1)
break;
CFDictionaryRef results = cookieStorageShimCallbacks.cookieStorageCopyRequestHeaderFieldsForURL(inCookieStorage, inRequestURL);
if (!results)
break;
return results;
} while (0);
// If we've failed to retrieve the cookies manually, fall back to the original imposed function:
return _CFHTTPCookieStorageCopyRequestHeaderFieldsForURL(inAllocator, inCookieStorage, inRequestURL);
}
DYLD_INTERPOSE(shimCFHTTPCookieStorageCopyRequestHeaderFieldsForURL, _CFHTTPCookieStorageCopyRequestHeaderFieldsForURL);
__attribute__((visibility("default")))
void WebKitCookieStorageShimInitialize(const CookieStorageShimCallbacks& callbacks)
{
// Because the value of cookieStorageShimCallbacks will be read from mulitple threads,
// only allow it to be initialized once.
static int initialized = 0;
if (!OSAtomicCompareAndSwapInt(0, 1, &initialized)) {
return;
}
cookieStorageShimCallbacks = callbacks;
}
}
#endif // ENABLE(NETWORK_PROCESS)
|
