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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome_frame/urlmon_upload_data_stream.h" | |
| 6 | |
| 7 #include "net/base/io_buffer.h" | |
| 8 #include "net/base/net_errors.h" | |
| 9 #include "net/base/upload_bytes_element_reader.h" | |
| 10 #include "net/base/upload_file_element_reader.h" | |
| 11 | |
| 12 namespace { | |
| 13 | |
| 14 // Creates UploadDataStream from UploadData. | |
| 15 net::UploadDataStream* CreateUploadDataStream(net::UploadData* upload_data) { | |
| 16 net::UploadDataStream* upload_data_stream = NULL; | |
| 17 const ScopedVector<net::UploadElement>& elements = upload_data->elements(); | |
| 18 | |
| 19 if (upload_data->is_chunked()) { | |
| 20 // Use AppendChunk when data is chunked. | |
| 21 upload_data_stream = new net::UploadDataStream( | |
| 22 net::UploadDataStream::CHUNKED, upload_data->identifier()); | |
| 23 | |
| 24 for (size_t i = 0; i < elements.size(); ++i) { | |
| 25 const net::UploadElement& element = *elements[i]; | |
| 26 const bool is_last_chunk = | |
| 27 i == elements.size() - 1 && upload_data->last_chunk_appended(); | |
| 28 DCHECK_EQ(net::UploadElement::TYPE_BYTES, element.type()); | |
| 29 upload_data_stream->AppendChunk(element.bytes(), element.bytes_length(), | |
| 30 is_last_chunk); | |
| 31 } | |
| 32 } else { | |
| 33 // Not chunked. | |
| 34 ScopedVector<net::UploadElementReader> element_readers; | |
| 35 for (size_t i = 0; i < elements.size(); ++i) { | |
| 36 const net::UploadElement& element = *elements[i]; | |
| 37 net::UploadElementReader* reader = NULL; | |
| 38 switch (element.type()) { | |
| 39 case net::UploadElement::TYPE_BYTES: | |
| 40 reader = new net::UploadBytesElementReader(element.bytes(), | |
| 41 element.bytes_length()); | |
| 42 break; | |
| 43 case net::UploadElement::TYPE_FILE: | |
| 44 reader = new net::UploadFileElementReaderSync( | |
| 45 element.file_path(), | |
| 46 element.file_range_offset(), | |
| 47 element.file_range_length(), | |
| 48 element.expected_file_modification_time()); | |
| 49 break; | |
| 50 } | |
| 51 DCHECK(reader); | |
| 52 element_readers.push_back(reader); | |
| 53 } | |
| 54 upload_data_stream = new net::UploadDataStream(element_readers.Pass(), | |
| 55 upload_data->identifier()); | |
| 56 } | |
| 57 return upload_data_stream; | |
| 58 } | |
| 59 | |
| 60 } // namespace | |
| 61 | |
| 62 bool UrlmonUploadDataStream::Initialize(net::UploadData* upload_data) { | |
| 63 upload_data_ = upload_data; | |
| 64 request_body_stream_.reset(CreateUploadDataStream(upload_data)); | |
| 65 return request_body_stream_->Init(net::CompletionCallback()) == net::OK; | |
| 66 } | |
| 67 | |
| 68 STDMETHODIMP UrlmonUploadDataStream::Read(void* pv, ULONG cb, ULONG* read) { | |
| 69 if (pv == NULL) { | |
| 70 NOTREACHED(); | |
| 71 return E_POINTER; | |
| 72 } | |
| 73 | |
| 74 // Have we already read past the end of the stream? | |
| 75 if (request_body_stream_->IsEOF()) { | |
| 76 if (read) { | |
| 77 *read = 0; | |
| 78 } | |
| 79 return S_FALSE; | |
| 80 } | |
| 81 | |
| 82 // The data in request_body_stream_ can be smaller than 'cb' so it's not | |
| 83 // guaranteed that we'll be able to read total_bytes_to_copy bytes. | |
| 84 uint64 total_bytes_to_copy = cb; | |
| 85 | |
| 86 uint64 bytes_copied = 0; | |
| 87 | |
| 88 char* write_pointer = reinterpret_cast<char*>(pv); | |
| 89 while (bytes_copied < total_bytes_to_copy) { | |
| 90 size_t bytes_to_copy_now = total_bytes_to_copy - bytes_copied; | |
| 91 | |
| 92 scoped_refptr<net::IOBufferWithSize> buf( | |
| 93 new net::IOBufferWithSize(bytes_to_copy_now)); | |
| 94 int bytes_read = request_body_stream_->Read(buf, buf->size(), | |
| 95 net::CompletionCallback()); | |
| 96 DCHECK_NE(net::ERR_IO_PENDING, bytes_read); | |
| 97 if (bytes_read == 0) // Reached the end of the stream. | |
| 98 break; | |
| 99 | |
| 100 memcpy(write_pointer, buf->data(), bytes_read); | |
| 101 | |
| 102 // Advance our copy tally | |
| 103 bytes_copied += bytes_read; | |
| 104 | |
| 105 // Advance our write pointer | |
| 106 write_pointer += bytes_read; | |
| 107 } | |
| 108 | |
| 109 DCHECK_LE(bytes_copied, total_bytes_to_copy); | |
| 110 | |
| 111 if (read) { | |
| 112 *read = static_cast<ULONG>(bytes_copied); | |
| 113 } | |
| 114 | |
| 115 return S_OK; | |
| 116 } | |
| 117 | |
| 118 STDMETHODIMP UrlmonUploadDataStream::Seek(LARGE_INTEGER move, DWORD origin, | |
| 119 ULARGE_INTEGER* new_pos) { | |
| 120 // UploadDataStream is really not very seek-able, so for now allow | |
| 121 // STREAM_SEEK_SETs to work with a 0 offset, but fail on everything else. | |
| 122 if (origin == STREAM_SEEK_SET && move.QuadPart == 0) { | |
| 123 if (request_body_stream_->position() != 0) { | |
| 124 request_body_stream_.reset(CreateUploadDataStream(upload_data_)); | |
| 125 const int result = request_body_stream_->Init(net::CompletionCallback()); | |
| 126 DCHECK_EQ(net::OK, result); | |
| 127 } | |
| 128 if (new_pos) { | |
| 129 new_pos->QuadPart = 0; | |
| 130 } | |
| 131 return S_OK; | |
| 132 } | |
| 133 | |
| 134 DCHECK(false) << __FUNCTION__; | |
| 135 return STG_E_INVALIDFUNCTION; | |
| 136 } | |
| 137 | |
| 138 STDMETHODIMP UrlmonUploadDataStream::Stat(STATSTG *stat_stg, | |
| 139 DWORD grf_stat_flag) { | |
| 140 if (stat_stg == NULL) | |
| 141 return E_POINTER; | |
| 142 | |
| 143 memset(stat_stg, 0, sizeof(STATSTG)); | |
| 144 if (0 == (grf_stat_flag & STATFLAG_NONAME)) { | |
| 145 const wchar_t kStreamBuffer[] = L"PostStream"; | |
| 146 stat_stg->pwcsName = | |
| 147 static_cast<wchar_t*>(::CoTaskMemAlloc(sizeof(kStreamBuffer))); | |
| 148 lstrcpy(stat_stg->pwcsName, kStreamBuffer); | |
| 149 } | |
| 150 stat_stg->type = STGTY_STREAM; | |
| 151 stat_stg->cbSize.QuadPart = request_body_stream_->size(); | |
| 152 return S_OK; | |
| 153 } | |
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