1/*
2 * Copyright (C) 2008 Apple Inc.  All rights reserved.
3 * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
4 * Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
5 * Copyright (C) 2007 Holger Hans Peter Freyther
6 * Copyright (C) 2008 Collabora Ltd.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
25 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
26 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32
33#if USE(CURL)
34
35#include "FormDataStreamCurl.h"
36
37#include "FormData.h"
38#include "ResourceRequest.h"
39#include <wtf/text/CString.h>
40
41namespace WebCore {
42
43FormDataStream::~FormDataStream()
44{
45    if (m_file)
46        fclose(m_file);
47}
48
49size_t FormDataStream::read(void* ptr, size_t blockSize, size_t numberOfBlocks)
50{
51    // Check for overflow.
52    if (!numberOfBlocks || blockSize > std::numeric_limits<size_t>::max() / numberOfBlocks)
53        return 0;
54
55    Vector<FormDataElement> elements;
56    if (m_resourceHandle->firstRequest().httpBody())
57        elements = m_resourceHandle->firstRequest().httpBody()->elements();
58
59    if (m_formDataElementIndex >= elements.size())
60        return 0;
61
62    FormDataElement element = elements[m_formDataElementIndex];
63
64    size_t toSend = blockSize * numberOfBlocks;
65    size_t sent;
66
67    if (element.m_type == FormDataElement::Type::EncodedFile) {
68        if (!m_file)
69            m_file = fopen(element.m_filename.utf8().data(), "rb");
70
71        if (!m_file) {
72            // FIXME: show a user error?
73#ifndef NDEBUG
74            printf("Failed while trying to open %s for upload\n", element.m_filename.utf8().data());
75#endif
76            return 0;
77        }
78
79        sent = fread(ptr, blockSize, numberOfBlocks, m_file);
80        if (!blockSize && ferror(m_file)) {
81            // FIXME: show a user error?
82#ifndef NDEBUG
83            printf("Failed while trying to read %s for upload\n", element.m_filename.utf8().data());
84#endif
85            return 0;
86        }
87        if (feof(m_file)) {
88            fclose(m_file);
89            m_file = 0;
90            m_formDataElementIndex++;
91        }
92    } else {
93        size_t elementSize = element.m_data.size() - m_formDataElementDataOffset;
94        sent = elementSize > toSend ? toSend : elementSize;
95        memcpy(ptr, element.m_data.data() + m_formDataElementDataOffset, sent);
96        if (elementSize > sent)
97            m_formDataElementDataOffset += sent;
98        else {
99            m_formDataElementDataOffset = 0;
100            m_formDataElementIndex++;
101        }
102    }
103
104    return sent;
105}
106
107bool FormDataStream::hasMoreElements() const
108{
109    Vector<FormDataElement> elements;
110    if (m_resourceHandle->firstRequest().httpBody())
111        elements = m_resourceHandle->firstRequest().httpBody()->elements();
112
113    return m_formDataElementIndex < elements.size();
114}
115
116} // namespace WebCore
117
118#endif
119