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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 "webkit/plugins/npapi/plugin_stream.h" | |
| 10 | |
| 11 #include <algorithm> | |
| 12 | |
| 13 #include "base/bind.h" | |
| 14 #include "base/message_loop/message_loop.h" | |
| 15 #include "base/strings/string_util.h" | |
| 16 #include "base/strings/utf_string_conversions.h" | |
| 17 #include "net/base/mime_util.h" | |
| 18 #include "url/gurl.h" | |
| 19 #include "webkit/plugins/npapi/plugin_instance.h" | |
| 20 | |
| 21 namespace webkit { | |
| 22 namespace npapi { | |
| 23 | |
| 24 PluginStream::PluginStream( | |
| 25 PluginInstance* instance, | |
| 26 const char* url, | |
| 27 bool need_notify, | |
| 28 void* notify_data) | |
| 29 : instance_(instance), | |
| 30 notify_needed_(need_notify), | |
| 31 notify_data_(notify_data), | |
| 32 close_on_write_data_(false), | |
| 33 requested_plugin_mode_(NP_NORMAL), | |
| 34 opened_(false), | |
| 35 data_offset_(0), | |
| 36 seekable_stream_(false) { | |
| 37 memset(&stream_, 0, sizeof(stream_)); | |
| 38 stream_.url = base::strdup(url); | |
| 39 ResetTempFileHandle(); | |
| 40 ResetTempFileName(); | |
| 41 } | |
| 42 | |
| 43 PluginStream::~PluginStream() { | |
| 44 // always close our temporary files. | |
| 45 CloseTempFile(); | |
| 46 free(const_cast<char*>(stream_.url)); | |
| 47 } | |
| 48 | |
| 49 void PluginStream::UpdateUrl(const char* url) { | |
| 50 DCHECK(!opened_); | |
| 51 free(const_cast<char*>(stream_.url)); | |
| 52 stream_.url = base::strdup(url); | |
| 53 pending_redirect_url_.clear(); | |
| 54 } | |
| 55 | |
| 56 bool PluginStream::Open(const std::string& mime_type, | |
| 57 const std::string& headers, | |
| 58 uint32 length, | |
| 59 uint32 last_modified, | |
| 60 bool request_is_seekable) { | |
| 61 headers_ = headers; | |
| 62 NPP id = instance_->npp(); | |
| 63 stream_.end = length; | |
| 64 stream_.lastmodified = last_modified; | |
| 65 stream_.pdata = 0; | |
| 66 stream_.ndata = id->ndata; | |
| 67 stream_.notifyData = notify_data_; | |
| 68 if (!headers_.empty()) | |
| 69 stream_.headers = headers_.c_str(); | |
| 70 | |
| 71 bool seekable_stream = false; | |
| 72 if (request_is_seekable) { | |
| 73 std::string headers_lc = StringToLowerASCII(headers); | |
| 74 if (headers_lc.find("accept-ranges: bytes") != std::string::npos) { | |
| 75 seekable_stream = true; | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 const char* char_mime_type = "application/x-unknown-content-type"; | |
| 80 std::string temp_mime_type; | |
| 81 if (!mime_type.empty()) { | |
| 82 char_mime_type = mime_type.c_str(); | |
| 83 } else { | |
| 84 GURL gurl(stream_.url); | |
| 85 | |
| 86 base::FilePath path = base::FilePath::FromUTF8Unsafe(gurl.path()); | |
| 87 if (net::GetMimeTypeFromFile(path, &temp_mime_type)) | |
| 88 char_mime_type = temp_mime_type.c_str(); | |
| 89 } | |
| 90 | |
| 91 // Silverlight expects a valid mime type | |
| 92 DCHECK_NE(0U, strlen(char_mime_type)); | |
| 93 NPError err = instance_->NPP_NewStream((NPMIMEType)char_mime_type, | |
| 94 &stream_, seekable_stream, | |
| 95 &requested_plugin_mode_); | |
| 96 if (err != NPERR_NO_ERROR) { | |
| 97 Notify(err); | |
| 98 return false; | |
| 99 } | |
| 100 | |
| 101 opened_ = true; | |
| 102 | |
| 103 if (requested_plugin_mode_ == NP_SEEK) { | |
| 104 seekable_stream_ = true; | |
| 105 } | |
| 106 // If the plugin has requested certain modes, then we need a copy | |
| 107 // of this file on disk. Open it and save it as we go. | |
| 108 if (RequestedPluginModeIsAsFile()) { | |
| 109 if (OpenTempFile() == false) { | |
| 110 return false; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 mime_type_ = char_mime_type; | |
| 115 return true; | |
| 116 } | |
| 117 | |
| 118 int PluginStream::Write(const char* buffer, const int length, | |
| 119 int data_offset) { | |
| 120 // There may be two streams to write to - the plugin and the file. | |
| 121 // It is unclear what to do if we cannot write to both. The rules of | |
| 122 // this function are that the plugin must consume at least as many | |
| 123 // bytes as returned by the WriteReady call. So, we will attempt to | |
| 124 // write that many to both streams. If we can't write that many bytes | |
| 125 // to each stream, we'll return failure. | |
| 126 | |
| 127 DCHECK(opened_); | |
| 128 if (WriteToFile(buffer, length) && | |
| 129 WriteToPlugin(buffer, length, data_offset)) { | |
| 130 return length; | |
| 131 } | |
| 132 | |
| 133 return -1; | |
| 134 } | |
| 135 | |
| 136 bool PluginStream::WriteToFile(const char* buf, size_t length) { | |
| 137 // For ASFILEONLY, ASFILE, and SEEK modes, we need to write | |
| 138 // to the disk | |
| 139 if (TempFileIsValid() && RequestedPluginModeIsAsFile()) { | |
| 140 size_t totalBytesWritten = 0, bytes; | |
| 141 do { | |
| 142 bytes = WriteBytes(buf, length); | |
| 143 totalBytesWritten += bytes; | |
| 144 } while (bytes > 0U && totalBytesWritten < length); | |
| 145 | |
| 146 if (totalBytesWritten != length) { | |
| 147 return false; | |
| 148 } | |
| 149 } | |
| 150 | |
| 151 return true; | |
| 152 } | |
| 153 | |
| 154 bool PluginStream::WriteToPlugin(const char* buf, const int length, | |
| 155 const int data_offset) { | |
| 156 // For NORMAL and ASFILE modes, we send the data to the plugin now | |
| 157 if (requested_plugin_mode_ != NP_NORMAL && | |
| 158 requested_plugin_mode_ != NP_ASFILE && | |
| 159 requested_plugin_mode_ != NP_SEEK) { | |
| 160 return true; | |
| 161 } | |
| 162 | |
| 163 int written = TryWriteToPlugin(buf, length, data_offset); | |
| 164 if (written == -1) | |
| 165 return false; | |
| 166 | |
| 167 if (written < length) { | |
| 168 // Buffer the remaining data. | |
| 169 size_t remaining = length - written; | |
| 170 size_t previous_size = delivery_data_.size(); | |
| 171 delivery_data_.resize(previous_size + remaining); | |
| 172 data_offset_ = data_offset; | |
| 173 memcpy(&delivery_data_[previous_size], buf + written, remaining); | |
| 174 base::MessageLoop::current()->PostTask( | |
| 175 FROM_HERE, base::Bind(&PluginStream::OnDelayDelivery, this)); | |
| 176 } | |
| 177 | |
| 178 return true; | |
| 179 } | |
| 180 | |
| 181 void PluginStream::OnDelayDelivery() { | |
| 182 // It is possible that the plugin stream may have closed before the task | |
| 183 // was hit. | |
| 184 if (!opened_) | |
| 185 return; | |
| 186 | |
| 187 int size = static_cast<int>(delivery_data_.size()); | |
| 188 int written = TryWriteToPlugin(&delivery_data_.front(), size, data_offset_); | |
| 189 if (written > 0) { | |
| 190 // Remove the data that we already wrote. | |
| 191 delivery_data_.erase(delivery_data_.begin(), | |
| 192 delivery_data_.begin() + written); | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 int PluginStream::TryWriteToPlugin(const char* buf, const int length, | |
| 197 const int data_offset) { | |
| 198 int byte_offset = 0; | |
| 199 | |
| 200 if (data_offset > 0) | |
| 201 data_offset_ = data_offset; | |
| 202 | |
| 203 while (byte_offset < length) { | |
| 204 int bytes_remaining = length - byte_offset; | |
| 205 int bytes_to_write = instance_->NPP_WriteReady(&stream_); | |
| 206 if (bytes_to_write > bytes_remaining) | |
| 207 bytes_to_write = bytes_remaining; | |
| 208 | |
| 209 if (bytes_to_write == 0) | |
| 210 return byte_offset; | |
| 211 | |
| 212 int bytes_consumed = instance_->NPP_Write( | |
| 213 &stream_, data_offset_, bytes_to_write, | |
| 214 const_cast<char*>(buf + byte_offset)); | |
| 215 if (bytes_consumed < 0) { | |
| 216 // The plugin failed, which means that we need to close the stream. | |
| 217 Close(NPRES_NETWORK_ERR); | |
| 218 return -1; | |
| 219 } | |
| 220 if (bytes_consumed == 0) { | |
| 221 // The plugin couldn't take all of the data now. | |
| 222 return byte_offset; | |
| 223 } | |
| 224 | |
| 225 // The plugin might report more that we gave it. | |
| 226 bytes_consumed = std::min(bytes_consumed, bytes_to_write); | |
| 227 | |
| 228 data_offset_ += bytes_consumed; | |
| 229 byte_offset += bytes_consumed; | |
| 230 } | |
| 231 | |
| 232 if (close_on_write_data_) | |
| 233 Close(NPRES_DONE); | |
| 234 | |
| 235 return length; | |
| 236 } | |
| 237 | |
| 238 bool PluginStream::Close(NPReason reason) { | |
| 239 if (opened_ == true) { | |
| 240 opened_ = false; | |
| 241 | |
| 242 if (delivery_data_.size()) { | |
| 243 if (reason == NPRES_DONE) { | |
| 244 // There is more data to be streamed, don't destroy the stream now. | |
| 245 close_on_write_data_ = true; | |
| 246 return true; | |
| 247 } else { | |
| 248 // Stop any pending data from being streamed | |
| 249 delivery_data_.resize(0); | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 // If we have a temp file, be sure to close it. | |
| 254 // Also, allow the plugin to access it now. | |
| 255 if (TempFileIsValid()) { | |
| 256 CloseTempFile(); | |
| 257 if (reason == NPRES_DONE) | |
| 258 WriteAsFile(); | |
| 259 } | |
| 260 | |
| 261 if (stream_.ndata != NULL) { | |
| 262 // Stream hasn't been closed yet. | |
| 263 NPError err = instance_->NPP_DestroyStream(&stream_, reason); | |
| 264 DCHECK(err == NPERR_NO_ERROR); | |
| 265 } | |
| 266 } | |
| 267 | |
| 268 Notify(reason); | |
| 269 return true; | |
| 270 } | |
| 271 | |
| 272 WebPluginResourceClient* PluginStream::AsResourceClient() { | |
| 273 return NULL; | |
| 274 } | |
| 275 | |
| 276 void PluginStream::Notify(NPReason reason) { | |
| 277 if (notify_needed_) { | |
| 278 instance_->NPP_URLNotify(stream_.url, reason, notify_data_); | |
| 279 notify_needed_ = false; | |
| 280 } | |
| 281 } | |
| 282 | |
| 283 bool PluginStream::RequestedPluginModeIsAsFile() const { | |
| 284 return (requested_plugin_mode_ == NP_ASFILE || | |
| 285 requested_plugin_mode_ == NP_ASFILEONLY); | |
| 286 } | |
| 287 | |
| 288 } // namespace npapi | |
| 289 } // namespace webkit | |
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Chromium Code Reviews
Issue 19761007:
Move NPAPI implementation out of webkit/plugins/npapi and into content. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/