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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 "net/base/upload_file_element_reader.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/files/file_util.h" | |
| 9 #include "base/location.h" | |
| 10 #include "base/profiler/scoped_tracker.h" | |
| 11 #include "base/task_runner_util.h" | |
| 12 #include "net/base/file_stream.h" | |
| 13 #include "net/base/io_buffer.h" | |
| 14 #include "net/base/net_errors.h" | |
| 15 | |
| 16 namespace net { | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 // In tests, this value is used to override the return value of | |
| 21 // UploadFileElementReader::GetContentLength() when set to non-zero. | |
| 22 uint64 overriding_content_length = 0; | |
| 23 | |
| 24 } // namespace | |
| 25 | |
| 26 UploadFileElementReader::UploadFileElementReader( | |
| 27 base::TaskRunner* task_runner, | |
| 28 const base::FilePath& path, | |
| 29 uint64 range_offset, | |
| 30 uint64 range_length, | |
| 31 const base::Time& expected_modification_time) | |
| 32 : task_runner_(task_runner), | |
| 33 path_(path), | |
| 34 range_offset_(range_offset), | |
| 35 range_length_(range_length), | |
| 36 expected_modification_time_(expected_modification_time), | |
| 37 content_length_(0), | |
| 38 bytes_remaining_(0), | |
| 39 weak_ptr_factory_(this) { | |
| 40 DCHECK(task_runner_.get()); | |
| 41 } | |
| 42 | |
| 43 UploadFileElementReader::~UploadFileElementReader() { | |
| 44 } | |
| 45 | |
| 46 const UploadFileElementReader* UploadFileElementReader::AsFileReader() const { | |
| 47 return this; | |
| 48 } | |
| 49 | |
| 50 int UploadFileElementReader::Init(const CompletionCallback& callback) { | |
| 51 DCHECK(!callback.is_null()); | |
| 52 Reset(); | |
| 53 | |
| 54 file_stream_.reset(new FileStream(task_runner_.get())); | |
| 55 int result = file_stream_->Open( | |
| 56 path_, | |
| 57 base::File::FLAG_OPEN | base::File::FLAG_READ | | |
| 58 base::File::FLAG_ASYNC, | |
| 59 base::Bind(&UploadFileElementReader::OnOpenCompleted, | |
| 60 weak_ptr_factory_.GetWeakPtr(), | |
| 61 callback)); | |
| 62 DCHECK_GT(0, result); | |
| 63 return result; | |
| 64 } | |
| 65 | |
| 66 uint64 UploadFileElementReader::GetContentLength() const { | |
| 67 if (overriding_content_length) | |
| 68 return overriding_content_length; | |
| 69 return content_length_; | |
| 70 } | |
| 71 | |
| 72 uint64 UploadFileElementReader::BytesRemaining() const { | |
| 73 return bytes_remaining_; | |
| 74 } | |
| 75 | |
| 76 int UploadFileElementReader::Read(IOBuffer* buf, | |
| 77 int buf_length, | |
| 78 const CompletionCallback& callback) { | |
| 79 DCHECK(!callback.is_null()); | |
| 80 | |
| 81 int num_bytes_to_read = static_cast<int>( | |
| 82 std::min(BytesRemaining(), static_cast<uint64>(buf_length))); | |
| 83 if (num_bytes_to_read == 0) | |
| 84 return 0; | |
| 85 | |
| 86 int result = file_stream_->Read( | |
| 87 buf, num_bytes_to_read, | |
| 88 base::Bind(base::IgnoreResult(&UploadFileElementReader::OnReadCompleted), | |
| 89 weak_ptr_factory_.GetWeakPtr(), | |
| 90 callback)); | |
| 91 // Even in async mode, FileStream::Read() may return the result synchronously. | |
| 92 if (result != ERR_IO_PENDING) | |
| 93 return OnReadCompleted(CompletionCallback(), result); | |
| 94 return ERR_IO_PENDING; | |
| 95 } | |
| 96 | |
| 97 void UploadFileElementReader::Reset() { | |
| 98 weak_ptr_factory_.InvalidateWeakPtrs(); | |
| 99 bytes_remaining_ = 0; | |
| 100 content_length_ = 0; | |
| 101 file_stream_.reset(); | |
| 102 } | |
| 103 | |
| 104 void UploadFileElementReader::OnOpenCompleted( | |
| 105 const CompletionCallback& callback, | |
| 106 int result) { | |
| 107 // TODO(vadimt): Remove ScopedTracker below once crbug.com/423948 is fixed. | |
| 108 tracked_objects::ScopedTracker tracking_profile( | |
| 109 FROM_HERE_WITH_EXPLICIT_FUNCTION( | |
| 110 "423948 UploadFileElementReader::OnOpenCompleted")); | |
| 111 | |
| 112 DCHECK(!callback.is_null()); | |
| 113 | |
| 114 if (result < 0) { | |
| 115 DLOG(WARNING) << "Failed to open \"" << path_.value() | |
| 116 << "\" for reading: " << result; | |
| 117 callback.Run(result); | |
| 118 return; | |
| 119 } | |
| 120 | |
| 121 if (range_offset_) { | |
| 122 int result = file_stream_->Seek( | |
| 123 base::File::FROM_BEGIN, range_offset_, | |
| 124 base::Bind(&UploadFileElementReader::OnSeekCompleted, | |
| 125 weak_ptr_factory_.GetWeakPtr(), | |
| 126 callback)); | |
| 127 DCHECK_GT(0, result); | |
| 128 if (result != ERR_IO_PENDING) | |
| 129 callback.Run(result); | |
| 130 } else { | |
| 131 OnSeekCompleted(callback, OK); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 void UploadFileElementReader::OnSeekCompleted( | |
| 136 const CompletionCallback& callback, | |
| 137 int64 result) { | |
| 138 DCHECK(!callback.is_null()); | |
| 139 | |
| 140 if (result < 0) { | |
| 141 DLOG(WARNING) << "Failed to seek \"" << path_.value() | |
| 142 << "\" to offset: " << range_offset_ << " (" << result << ")"; | |
| 143 callback.Run(static_cast<int>(result)); | |
| 144 return; | |
| 145 } | |
| 146 | |
| 147 base::File::Info* file_info = new base::File::Info; | |
| 148 bool posted = base::PostTaskAndReplyWithResult( | |
| 149 task_runner_.get(), | |
| 150 FROM_HERE, | |
| 151 base::Bind(&base::GetFileInfo, path_, file_info), | |
| 152 base::Bind(&UploadFileElementReader::OnGetFileInfoCompleted, | |
| 153 weak_ptr_factory_.GetWeakPtr(), | |
| 154 callback, | |
| 155 base::Owned(file_info))); | |
| 156 DCHECK(posted); | |
| 157 } | |
| 158 | |
| 159 void UploadFileElementReader::OnGetFileInfoCompleted( | |
| 160 const CompletionCallback& callback, | |
| 161 base::File::Info* file_info, | |
| 162 bool result) { | |
| 163 DCHECK(!callback.is_null()); | |
| 164 if (!result) { | |
| 165 DLOG(WARNING) << "Failed to get file info of \"" << path_.value() << "\""; | |
| 166 callback.Run(ERR_FILE_NOT_FOUND); | |
| 167 return; | |
| 168 } | |
| 169 | |
| 170 int64 length = file_info->size; | |
| 171 if (range_offset_ < static_cast<uint64>(length)) { | |
| 172 // Compensate for the offset. | |
| 173 length = std::min(length - range_offset_, range_length_); | |
| 174 } | |
| 175 | |
| 176 // If the underlying file has been changed and the expected file modification | |
| 177 // time is set, treat it as error. Note that |expected_modification_time_| may | |
| 178 // have gone through multiple conversion steps involving loss of precision | |
| 179 // (including conversion to time_t). Therefore the check below only verifies | |
| 180 // that the timestamps are within one second of each other. This check is used | |
| 181 // for sliced files. | |
| 182 if (!expected_modification_time_.is_null() && | |
| 183 (expected_modification_time_ - file_info->last_modified) | |
| 184 .magnitude() | |
| 185 .InSeconds() != 0) { | |
| 186 callback.Run(ERR_UPLOAD_FILE_CHANGED); | |
| 187 return; | |
| 188 } | |
| 189 | |
| 190 content_length_ = length; | |
| 191 bytes_remaining_ = GetContentLength(); | |
| 192 callback.Run(OK); | |
| 193 } | |
| 194 | |
| 195 int UploadFileElementReader::OnReadCompleted( | |
| 196 const CompletionCallback& callback, | |
| 197 int result) { | |
| 198 if (result == 0) // Reached end-of-file earlier than expected. | |
| 199 result = ERR_UPLOAD_FILE_CHANGED; | |
| 200 | |
| 201 if (result > 0) { | |
| 202 DCHECK_GE(bytes_remaining_, static_cast<uint64>(result)); | |
| 203 bytes_remaining_ -= result; | |
| 204 } | |
| 205 | |
| 206 if (!callback.is_null()) | |
| 207 callback.Run(result); | |
| 208 return result; | |
| 209 } | |
| 210 | |
| 211 UploadFileElementReader::ScopedOverridingContentLengthForTests:: | |
| 212 ScopedOverridingContentLengthForTests(uint64 value) { | |
| 213 overriding_content_length = value; | |
| 214 } | |
| 215 | |
| 216 UploadFileElementReader::ScopedOverridingContentLengthForTests:: | |
| 217 ~ScopedOverridingContentLengthForTests() { | |
| 218 overriding_content_length = 0; | |
| 219 } | |
| 220 | |
| 221 } // namespace net | |
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Chromium Code Reviews
Issue 992733002:
Remove //net (except for Android test stuff) and sdch (Closed)
Base URL: git@github.com:domokit/mojo.git@master