1/*
2 * Copyright (C) 2014, 2016 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 "config.h"
27#include "FunctionWhitelist.h"
28
29#if ENABLE(JIT)
30
31#include "CodeBlock.h"
32#include "Options.h"
33#include <stdio.h>
34#include <string.h>
35
36namespace JSC {
37
38FunctionWhitelist::FunctionWhitelist(const char* filename)
39{
40 if (!filename)
41 return;
42
43 FILE* f = fopen(filename, "r");
44 if (!f) {
45 dataLogF("Failed to open file %s. Did you add the file-read-data entitlement to WebProcess.sb?\n", filename);
46 return;
47 }
48
49 m_hasActiveWhitelist = true;
50
51 char* line;
52 char buffer[BUFSIZ];
53 while ((line = fgets(buffer, sizeof(buffer), f))) {
54 if (strstr(line, "//") == line)
55 continue;
56
57 // Get rid of newlines at the ends of the strings.
58 size_t length = strlen(line);
59 if (line[length - 1] == '\n') {
60 line[length - 1] = '\0';
61 length--;
62 }
63
64 // Skip empty lines.
65 if (!length)
66 continue;
67
68 m_entries.add(String(line, length));
69 }
70
71 int result = fclose(f);
72 if (result)
73 dataLogF("Failed to close file %s: %s\n", filename, strerror(errno));
74}
75
76bool FunctionWhitelist::contains(CodeBlock* codeBlock) const
77{
78 if (!m_hasActiveWhitelist)
79 return true;
80
81 if (m_entries.isEmpty())
82 return false;
83
84 String name = String::fromUTF8(codeBlock->inferredName());
85 if (m_entries.contains(name))
86 return true;
87
88 String hash = String::fromUTF8(codeBlock->hashAsStringIfPossible());
89 if (m_entries.contains(hash))
90 return true;
91
92 return m_entries.contains(name + '#' + hash);
93}
94
95} // namespace JSC
96
97#endif // ENABLE(JIT)
98
99