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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 // TODO : Support NP_ASFILEONLY mode | |
| 6 // TODO : Support NP_SEEK mode | |
| 7 // TODO : Support SEEKABLE=true in NewStream | |
| 8 | |
| 9 #include "content/child/npapi/plugin_stream.h" | |
| 10 | |
| 11 #include <algorithm> | |
| 12 | |
| 13 #include "base/bind.h" | |
| 14 #include "base/location.h" | |
| 15 #include "base/single_thread_task_runner.h" | |
| 16 #include "base/strings/string_util.h" | |
| 17 #include "base/strings/utf_string_conversions.h" | |
| 18 #include "base/thread_task_runner_handle.h" | |
| 19 #include "content/child/npapi/plugin_instance.h" | |
| 20 #include "net/base/mime_util.h" | |
| 21 #include "url/gurl.h" | |
| 22 | |
| 23 namespace content { | |
| 24 | |
| 25 PluginStream::PluginStream( | |
| 26 PluginInstance* instance, | |
| 27 const char* url, | |
| 28 bool need_notify, | |
| 29 void* notify_data) | |
| 30 : instance_(instance), | |
| 31 notify_needed_(need_notify), | |
| 32 notify_data_(notify_data), | |
| 33 close_on_write_data_(false), | |
| 34 requested_plugin_mode_(NP_NORMAL), | |
| 35 opened_(false), | |
| 36 data_offset_(0), | |
| 37 seekable_stream_(false) { | |
| 38 memset(&stream_, 0, sizeof(stream_)); | |
| 39 stream_.url = base::strdup(url); | |
| 40 ResetTempFileHandle(); | |
| 41 ResetTempFileName(); | |
| 42 } | |
| 43 | |
| 44 PluginStream::~PluginStream() { | |
| 45 // always close our temporary files. | |
| 46 CloseTempFile(); | |
| 47 free(const_cast<char*>(stream_.url)); | |
| 48 } | |
| 49 | |
| 50 bool PluginStream::Open(const std::string& mime_type, | |
| 51 const std::string& headers, | |
| 52 uint32 length, | |
| 53 uint32 last_modified, | |
| 54 bool request_is_seekable) { | |
| 55 headers_ = headers; | |
| 56 NPP id = instance_->npp(); | |
| 57 stream_.end = length; | |
| 58 stream_.lastmodified = last_modified; | |
| 59 stream_.pdata = 0; | |
| 60 stream_.ndata = id->ndata; | |
| 61 stream_.notifyData = notify_data_; | |
| 62 if (!headers_.empty()) | |
| 63 stream_.headers = headers_.c_str(); | |
| 64 | |
| 65 bool seekable_stream = false; | |
| 66 if (request_is_seekable) { | |
| 67 std::string headers_lc = base::ToLowerASCII(headers); | |
| 68 if (headers_lc.find("accept-ranges: bytes") != std::string::npos) { | |
| 69 seekable_stream = true; | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 const char* char_mime_type = "application/x-unknown-content-type"; | |
| 74 std::string temp_mime_type; | |
| 75 if (!mime_type.empty()) { | |
| 76 char_mime_type = mime_type.c_str(); | |
| 77 } else { | |
| 78 GURL gurl(stream_.url); | |
| 79 | |
| 80 base::FilePath path = base::FilePath::FromUTF8Unsafe(gurl.path()); | |
| 81 if (net::GetMimeTypeFromFile(path, &temp_mime_type)) | |
| 82 char_mime_type = temp_mime_type.c_str(); | |
| 83 } | |
| 84 | |
| 85 // Silverlight expects a valid mime type | |
| 86 DCHECK_NE(0U, strlen(char_mime_type)); | |
| 87 NPError err = instance_->NPP_NewStream((NPMIMEType)char_mime_type, | |
| 88 &stream_, seekable_stream, | |
| 89 &requested_plugin_mode_); | |
| 90 if (err != NPERR_NO_ERROR) { | |
| 91 Notify(err); | |
| 92 return false; | |
| 93 } | |
| 94 | |
| 95 opened_ = true; | |
| 96 | |
| 97 if (requested_plugin_mode_ == NP_SEEK) { | |
| 98 seekable_stream_ = true; | |
| 99 } | |
| 100 // If the plugin has requested certain modes, then we need a copy | |
| 101 // of this file on disk. Open it and save it as we go. | |
| 102 if (RequestedPluginModeIsAsFile()) { | |
| 103 if (OpenTempFile() == false) { | |
| 104 return false; | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 mime_type_ = char_mime_type; | |
| 109 return true; | |
| 110 } | |
| 111 | |
| 112 int PluginStream::Write(const char* buffer, const int length, | |
| 113 int data_offset) { | |
| 114 // There may be two streams to write to - the plugin and the file. | |
| 115 // It is unclear what to do if we cannot write to both. The rules of | |
| 116 // this function are that the plugin must consume at least as many | |
| 117 // bytes as returned by the WriteReady call. So, we will attempt to | |
| 118 // write that many to both streams. If we can't write that many bytes | |
| 119 // to each stream, we'll return failure. | |
| 120 | |
| 121 DCHECK(opened_); | |
| 122 if (WriteToFile(buffer, length) && | |
| 123 WriteToPlugin(buffer, length, data_offset)) { | |
| 124 return length; | |
| 125 } | |
| 126 | |
| 127 return -1; | |
| 128 } | |
| 129 | |
| 130 bool PluginStream::WriteToFile(const char* buf, size_t length) { | |
| 131 // For ASFILEONLY, ASFILE, and SEEK modes, we need to write | |
| 132 // to the disk | |
| 133 if (TempFileIsValid() && RequestedPluginModeIsAsFile()) { | |
| 134 size_t totalBytesWritten = 0, bytes; | |
| 135 do { | |
| 136 bytes = WriteBytes(buf, length); | |
| 137 totalBytesWritten += bytes; | |
| 138 } while (bytes > 0U && totalBytesWritten < length); | |
| 139 | |
| 140 if (totalBytesWritten != length) { | |
| 141 return false; | |
| 142 } | |
| 143 } | |
| 144 | |
| 145 return true; | |
| 146 } | |
| 147 | |
| 148 bool PluginStream::WriteToPlugin(const char* buf, const int length, | |
| 149 const int data_offset) { | |
| 150 // For NORMAL and ASFILE modes, we send the data to the plugin now | |
| 151 if (requested_plugin_mode_ != NP_NORMAL && | |
| 152 requested_plugin_mode_ != NP_ASFILE && | |
| 153 requested_plugin_mode_ != NP_SEEK) { | |
| 154 return true; | |
| 155 } | |
| 156 | |
| 157 int written = TryWriteToPlugin(buf, length, data_offset); | |
| 158 if (written == -1) | |
| 159 return false; | |
| 160 | |
| 161 if (written < length) { | |
| 162 // Buffer the remaining data. | |
| 163 size_t remaining = length - written; | |
| 164 size_t previous_size = delivery_data_.size(); | |
| 165 delivery_data_.resize(previous_size + remaining); | |
| 166 data_offset_ = data_offset; | |
| 167 memcpy(&delivery_data_[previous_size], buf + written, remaining); | |
| 168 base::ThreadTaskRunnerHandle::Get()->PostTask( | |
| 169 FROM_HERE, base::Bind(&PluginStream::OnDelayDelivery, this)); | |
| 170 } | |
| 171 | |
| 172 return true; | |
| 173 } | |
| 174 | |
| 175 void PluginStream::OnDelayDelivery() { | |
| 176 // It is possible that the plugin stream may have closed before the task | |
| 177 // was hit. | |
| 178 if (!opened_) | |
| 179 return; | |
| 180 | |
| 181 int size = static_cast<int>(delivery_data_.size()); | |
| 182 int written = TryWriteToPlugin(&delivery_data_.front(), size, data_offset_); | |
| 183 if (written > 0) { | |
| 184 // Remove the data that we already wrote. | |
| 185 delivery_data_.erase(delivery_data_.begin(), | |
| 186 delivery_data_.begin() + written); | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 int PluginStream::TryWriteToPlugin(const char* buf, const int length, | |
| 191 const int data_offset) { | |
| 192 int byte_offset = 0; | |
| 193 | |
| 194 if (data_offset > 0) | |
| 195 data_offset_ = data_offset; | |
| 196 | |
| 197 while (byte_offset < length) { | |
| 198 int bytes_remaining = length - byte_offset; | |
| 199 int bytes_to_write = instance_->NPP_WriteReady(&stream_); | |
| 200 if (bytes_to_write > bytes_remaining) | |
| 201 bytes_to_write = bytes_remaining; | |
| 202 | |
| 203 if (bytes_to_write == 0) | |
| 204 return byte_offset; | |
| 205 | |
| 206 int bytes_consumed = instance_->NPP_Write( | |
| 207 &stream_, data_offset_, bytes_to_write, | |
| 208 const_cast<char*>(buf + byte_offset)); | |
| 209 if (bytes_consumed < 0) { | |
| 210 // The plugin failed, which means that we need to close the stream. | |
| 211 Close(NPRES_NETWORK_ERR); | |
| 212 return -1; | |
| 213 } | |
| 214 if (bytes_consumed == 0) { | |
| 215 // The plugin couldn't take all of the data now. | |
| 216 return byte_offset; | |
| 217 } | |
| 218 | |
| 219 // The plugin might report more that we gave it. | |
| 220 bytes_consumed = std::min(bytes_consumed, bytes_to_write); | |
| 221 | |
| 222 data_offset_ += bytes_consumed; | |
| 223 byte_offset += bytes_consumed; | |
| 224 } | |
| 225 | |
| 226 if (close_on_write_data_) | |
| 227 Close(NPRES_DONE); | |
| 228 | |
| 229 return length; | |
| 230 } | |
| 231 | |
| 232 bool PluginStream::Close(NPReason reason) { | |
| 233 if (opened_ == true) { | |
| 234 opened_ = false; | |
| 235 | |
| 236 if (delivery_data_.size()) { | |
| 237 if (reason == NPRES_DONE) { | |
| 238 // There is more data to be streamed, don't destroy the stream now. | |
| 239 close_on_write_data_ = true; | |
| 240 return true; | |
| 241 } else { | |
| 242 // Stop any pending data from being streamed | |
| 243 delivery_data_.resize(0); | |
| 244 } | |
| 245 } | |
| 246 | |
| 247 // If we have a temp file, be sure to close it. | |
| 248 // Also, allow the plugin to access it now. | |
| 249 if (TempFileIsValid()) { | |
| 250 CloseTempFile(); | |
| 251 if (reason == NPRES_DONE) | |
| 252 WriteAsFile(); | |
| 253 } | |
| 254 | |
| 255 if (stream_.ndata != NULL) { | |
| 256 // Stream hasn't been closed yet. | |
| 257 NPError err = instance_->NPP_DestroyStream(&stream_, reason); | |
| 258 DCHECK(err == NPERR_NO_ERROR); | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 Notify(reason); | |
| 263 return true; | |
| 264 } | |
| 265 | |
| 266 WebPluginResourceClient* PluginStream::AsResourceClient() { | |
| 267 return NULL; | |
| 268 } | |
| 269 | |
| 270 void PluginStream::Notify(NPReason reason) { | |
| 271 if (notify_needed_) { | |
| 272 instance_->NPP_URLNotify(stream_.url, reason, notify_data_); | |
| 273 notify_needed_ = false; | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 bool PluginStream::RequestedPluginModeIsAsFile() const { | |
| 278 return (requested_plugin_mode_ == NP_ASFILE || | |
| 279 requested_plugin_mode_ == NP_ASFILEONLY); | |
| 280 } | |
| 281 | |
| 282 } // namespace content | |
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Chromium Code Reviews
Issue 1426923007:
Remove PluginLoadObserver and related logic, it was only used for NPAPI. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master