1/*
2 * Copyright (C) 2016 Canon Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted, provided that the following conditions
6 * are required to be met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Canon Inc. nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY CANON INC. AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL CANON INC. AND ITS CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#pragma once
30
31#include "ActiveDOMObject.h"
32#include "FetchBody.h"
33#include "FetchBodySource.h"
34#include "FetchHeaders.h"
35#include "FetchLoader.h"
36#include "FetchLoaderClient.h"
37#include "ResourceError.h"
38
39namespace WebCore {
40
41class FetchBodyOwner : public RefCounted<FetchBodyOwner>, public ActiveDOMObject {
42public:
43 FetchBodyOwner(ScriptExecutionContext&, Optional<FetchBody>&&, Ref<FetchHeaders>&&);
44 ~FetchBodyOwner();
45
46 bool bodyUsed() const { return isDisturbed(); }
47 void arrayBuffer(Ref<DeferredPromise>&&);
48 void blob(Ref<DeferredPromise>&&);
49 void formData(Ref<DeferredPromise>&&);
50 void json(Ref<DeferredPromise>&&);
51 void text(Ref<DeferredPromise>&&);
52
53 bool isDisturbed() const;
54 bool isDisturbedOrLocked() const;
55
56 void loadBlob(const Blob&, FetchBodyConsumer*);
57
58 bool isActive() const { return !!m_blobLoader; }
59
60 RefPtr<ReadableStream> readableStream(JSC::ExecState&);
61 bool hasReadableStreamBody() const { return m_body && m_body->hasReadableStream(); }
62
63#if ENABLE(STREAMS_API)
64 virtual void consumeBodyAsStream();
65 virtual void feedStream() { }
66 virtual void cancel() { }
67#endif
68
69 bool hasLoadingError() const;
70 ResourceError loadingError() const;
71 Optional<Exception> loadingException() const;
72
73protected:
74 const FetchBody& body() const { return *m_body; }
75 FetchBody& body() { return *m_body; }
76 bool isBodyNull() const { return !m_body; }
77 bool isBodyNullOrOpaque() const { return !m_body || m_isBodyOpaque; }
78 void cloneBody(FetchBodyOwner&);
79
80 void extractBody(ScriptExecutionContext&, FetchBody::Init&&);
81 void updateContentType();
82 void consumeOnceLoadingFinished(FetchBodyConsumer::Type, Ref<DeferredPromise>&&);
83
84 void setBody(FetchBody&& body) { m_body = WTFMove(body); }
85 void createReadableStream(JSC::ExecState&);
86
87 // ActiveDOMObject API
88 void stop() override;
89
90 void setDisturbed() { m_isDisturbed = true; }
91
92 void setBodyAsOpaque() { m_isBodyOpaque = true; }
93 bool isBodyOpaque() const { return m_isBodyOpaque; }
94
95 void setLoadingError(Exception&&);
96 void setLoadingError(ResourceError&&);
97
98private:
99 // Blob loading routines
100 void blobChunk(const char*, size_t);
101 void blobLoadingSucceeded();
102 void blobLoadingFailed();
103 void finishBlobLoading();
104
105 struct BlobLoader final : FetchLoaderClient {
106 BlobLoader(FetchBodyOwner&);
107
108 // FetchLoaderClient API
109 void didReceiveResponse(const ResourceResponse&) final;
110 void didReceiveData(const char* data, size_t size) final { owner.blobChunk(data, size); }
111 void didFail(const ResourceError&) final;
112 void didSucceed() final { owner.blobLoadingSucceeded(); }
113
114 FetchBodyOwner& owner;
115 std::unique_ptr<FetchLoader> loader;
116 };
117
118protected:
119 Optional<FetchBody> m_body;
120 String m_contentType;
121 bool m_isDisturbed { false };
122#if ENABLE(STREAMS_API)
123 RefPtr<FetchBodySource> m_readableStreamSource;
124#endif
125 Ref<FetchHeaders> m_headers;
126
127private:
128 Optional<BlobLoader> m_blobLoader;
129 bool m_isBodyOpaque { false };
130
131 Variant<std::nullptr_t, Exception, ResourceError> m_loadingError;
132};
133
134} // namespace WebCore
135