1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * Copyright (C) 2016 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#pragma once
33
34#include "NetworkDataTask.h"
35#include <WebCore/FileStreamClient.h>
36#include <wtf/FileSystem.h>
37
38namespace WebCore {
39class AsyncFileStream;
40class BlobDataFileReference;
41class BlobData;
42class BlobDataItem;
43class BlobRegistryImpl;
44}
45
46namespace WebKit {
47
48class NetworkProcess;
49
50class NetworkDataTaskBlob final : public NetworkDataTask, public WebCore::FileStreamClient {
51public:
52 static Ref<NetworkDataTask> create(NetworkSession& session, WebCore::BlobRegistryImpl& blobRegistry, NetworkDataTaskClient& client, const WebCore::ResourceRequest& request, WebCore::ContentSniffingPolicy shouldContentSniff, const Vector<RefPtr<WebCore::BlobDataFileReference>>& fileReferences)
53 {
54 return adoptRef(*new NetworkDataTaskBlob(session, blobRegistry, client, request, shouldContentSniff, fileReferences));
55 }
56
57 ~NetworkDataTaskBlob();
58
59private:
60 NetworkDataTaskBlob(NetworkSession&, WebCore::BlobRegistryImpl&, NetworkDataTaskClient&, const WebCore::ResourceRequest&, WebCore::ContentSniffingPolicy, const Vector<RefPtr<WebCore::BlobDataFileReference>>&);
61
62 void cancel() override;
63 void resume() override;
64 void invalidateAndCancel() override;
65 NetworkDataTask::State state() const override { return m_state; }
66
67 void setPendingDownloadLocation(const String&, SandboxExtension::Handle&&, bool /*allowOverwrite*/) override;
68 String suggestedFilename() const override;
69
70 // FileStreamClient methods.
71 void didGetSize(long long) override;
72 void didOpen(bool) override;
73 void didRead(int) override;
74
75 enum class Error {
76 NoError = 0,
77 NotFoundError = 1,
78 SecurityError = 2,
79 RangeError = 3,
80 NotReadableError = 4,
81 MethodNotAllowed = 5
82 };
83
84 void clearStream();
85 void getSizeForNext();
86 void dispatchDidReceiveResponse(Error = Error::NoError);
87 void seek();
88 void consumeData(const char* data, int bytesRead);
89 void read();
90 void readData(const WebCore::BlobDataItem&);
91 void readFile(const WebCore::BlobDataItem&);
92 void download();
93 bool writeDownload(const char* data, int bytesRead);
94 void cleanDownloadFiles();
95 void didFailDownload(const WebCore::ResourceError&);
96 void didFinishDownload();
97 void didFail(Error);
98 void didFinish();
99
100 enum { kPositionNotSpecified = -1 };
101
102 RefPtr<WebCore::BlobData> m_blobData;
103 std::unique_ptr<WebCore::AsyncFileStream> m_stream; // For asynchronous loading.
104 Vector<char> m_buffer;
105 Vector<long long> m_itemLengthList;
106 State m_state { State::Suspended };
107 long long m_rangeOffset { kPositionNotSpecified };
108 long long m_rangeEnd { kPositionNotSpecified };
109 long long m_rangeSuffixLength { kPositionNotSpecified };
110 long long m_totalSize { 0 };
111 long long m_totalRemainingSize { 0 };
112 long long m_currentItemReadSize { 0 };
113 unsigned m_sizeItemCount { 0 };
114 unsigned m_readItemCount { 0 };
115 bool m_fileOpened { false };
116 FileSystem::PlatformFileHandle m_downloadFile { FileSystem::invalidPlatformFileHandle };
117
118 Vector<RefPtr<WebCore::BlobDataFileReference>> m_fileReferences;
119 RefPtr<SandboxExtension> m_sandboxExtension;
120 Ref<NetworkProcess> m_networkProcess;
121};
122
123} // namespace WebKit
124