1/*
2 * Copyright (C) 2015 Igalia S.L
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 "NetworkCacheData.h"
28
29#include "SharedMemory.h"
30#include <fcntl.h>
31#include <sys/mman.h>
32#include <sys/stat.h>
33#include <sys/types.h>
34#include <unistd.h>
35
36#if USE(GLIB) && !PLATFORM(WIN)
37#include <gio/gfiledescriptorbased.h>
38#endif
39
40namespace WebKit {
41namespace NetworkCache {
42
43Data::Data(const uint8_t* data, size_t size)
44 : m_size(size)
45{
46 uint8_t* copiedData = static_cast<uint8_t*>(fastMalloc(size));
47 memcpy(copiedData, data, size);
48 m_buffer = adoptGRef(soup_buffer_new_with_owner(copiedData, size, copiedData, fastFree));
49}
50
51Data::Data(GRefPtr<SoupBuffer>&& buffer, int fd)
52 : m_buffer(buffer)
53 , m_fileDescriptor(fd)
54 , m_size(buffer ? buffer->length : 0)
55 , m_isMap(m_size && fd != -1)
56{
57}
58
59Data Data::empty()
60{
61 GRefPtr<SoupBuffer> buffer = adoptGRef(soup_buffer_new(SOUP_MEMORY_TAKE, nullptr, 0));
62 return { WTFMove(buffer) };
63}
64
65const uint8_t* Data::data() const
66{
67 return m_buffer ? reinterpret_cast<const uint8_t*>(m_buffer->data) : nullptr;
68}
69
70bool Data::isNull() const
71{
72 return !m_buffer;
73}
74
75bool Data::apply(const Function<bool (const uint8_t*, size_t)>& applier) const
76{
77 if (!m_size)
78 return false;
79
80 return applier(reinterpret_cast<const uint8_t*>(m_buffer->data), m_buffer->length);
81}
82
83Data Data::subrange(size_t offset, size_t size) const
84{
85 if (!m_buffer)
86 return { };
87
88 GRefPtr<SoupBuffer> subBuffer = adoptGRef(soup_buffer_new_subbuffer(m_buffer.get(), offset, size));
89 return { WTFMove(subBuffer) };
90}
91
92Data concatenate(const Data& a, const Data& b)
93{
94 if (a.isNull())
95 return b;
96 if (b.isNull())
97 return a;
98
99 size_t size = a.size() + b.size();
100 uint8_t* data = static_cast<uint8_t*>(fastMalloc(size));
101 memcpy(data, a.soupBuffer()->data, a.soupBuffer()->length);
102 memcpy(data + a.soupBuffer()->length, b.soupBuffer()->data, b.soupBuffer()->length);
103 GRefPtr<SoupBuffer> buffer = adoptGRef(soup_buffer_new_with_owner(data, size, data, fastFree));
104 return { WTFMove(buffer) };
105}
106
107struct MapWrapper {
108 ~MapWrapper()
109 {
110 munmap(map, size);
111 close(fileDescriptor);
112 }
113
114 void* map;
115 size_t size;
116 int fileDescriptor;
117};
118
119static void deleteMapWrapper(MapWrapper* wrapper)
120{
121 delete wrapper;
122}
123
124Data Data::adoptMap(void* map, size_t size, int fd)
125{
126 ASSERT(map);
127 ASSERT(map != MAP_FAILED);
128 MapWrapper* wrapper = new MapWrapper { map, size, fd };
129 GRefPtr<SoupBuffer> buffer = adoptGRef(soup_buffer_new_with_owner(map, size, wrapper, reinterpret_cast<GDestroyNotify>(deleteMapWrapper)));
130 return { WTFMove(buffer), fd };
131}
132
133#if USE(GLIB) && !PLATFORM(WIN)
134Data adoptAndMapFile(GFileIOStream* stream, size_t offset, size_t size)
135{
136 GInputStream* inputStream = g_io_stream_get_input_stream(G_IO_STREAM(stream));
137 int fd = g_file_descriptor_based_get_fd(G_FILE_DESCRIPTOR_BASED(inputStream));
138 return adoptAndMapFile(fd, offset, size);
139}
140#endif
141
142RefPtr<SharedMemory> Data::tryCreateSharedMemory() const
143{
144 if (isNull() || !isMap())
145 return nullptr;
146
147 return SharedMemory::wrapMap(const_cast<char*>(m_buffer->data), m_buffer->length, m_fileDescriptor);
148}
149
150} // namespace NetworkCache
151} // namespace WebKit
152