| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2011 The Native Client 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 "native_client/src/trusted/plugin/file_downloader.h" | |
| 6 | |
| 7 #include <stdio.h> | |
| 8 #include <string> | |
| 9 | |
| 10 #include "native_client/src/include/portability_io.h" | |
| 11 #include "native_client/src/shared/platform/nacl_check.h" | |
| 12 #include "native_client/src/shared/platform/nacl_time.h" | |
| 13 #include "native_client/src/trusted/plugin/plugin.h" | |
| 14 #include "native_client/src/trusted/plugin/utility.h" | |
| 15 #include "ppapi/c/pp_errors.h" | |
| 16 #include "ppapi/c/ppb_file_io.h" | |
| 17 #include "ppapi/c/trusted/ppb_url_loader_trusted.h" | |
| 18 #include "ppapi/cpp/file_io.h" | |
| 19 #include "ppapi/cpp/file_ref.h" | |
| 20 #include "ppapi/cpp/url_request_info.h" | |
| 21 #include "ppapi/cpp/url_response_info.h" | |
| 22 | |
| 23 namespace { | |
| 24 const int32_t kExtensionUrlRequestStatusOk = 200; | |
| 25 const int32_t kDataUriRequestStatusOk = 0; | |
| 26 } | |
| 27 | |
| 28 namespace plugin { | |
| 29 | |
| 30 void FileDownloader::Initialize(Plugin* instance) { | |
| 31 PLUGIN_PRINTF(("FileDownloader::FileDownloader (this=%p)\n", | |
| 32 static_cast<void*>(this))); | |
| 33 CHECK(instance != NULL); | |
| 34 CHECK(instance_ == NULL); // Can only initialize once. | |
| 35 instance_ = instance; | |
| 36 callback_factory_.Initialize(this); | |
| 37 file_io_trusted_interface_ = static_cast<const PPB_FileIOTrusted*>( | |
| 38 pp::Module::Get()->GetBrowserInterface(PPB_FILEIOTRUSTED_INTERFACE)); | |
| 39 } | |
| 40 | |
| 41 | |
| 42 bool FileDownloader::Open(const nacl::string& url, | |
| 43 DownloadFlags flags, | |
| 44 const pp::CompletionCallback& callback) { | |
| 45 PLUGIN_PRINTF(("FileDownloader::Open (url=%s)\n", url.c_str())); | |
| 46 if (callback.pp_completion_callback().func == NULL || | |
| 47 instance_ == NULL || | |
| 48 file_io_trusted_interface_ == NULL) | |
| 49 return false; | |
| 50 | |
| 51 CHECK(instance_ != NULL); | |
| 52 open_time_ = NaClGetTimeOfDayMicroseconds(); | |
| 53 url_to_open_ = url; | |
| 54 url_ = url; | |
| 55 file_open_notify_callback_ = callback; | |
| 56 flags_ = flags; | |
| 57 buffer_.clear(); | |
| 58 pp::Module* module = pp::Module::Get(); | |
| 59 pp::URLRequestInfo url_request(instance_); | |
| 60 | |
| 61 do { | |
| 62 // Reset the url loader and file reader. | |
| 63 // Note that we have the only reference to the underlying objects, so | |
| 64 // this will implicitly close any pending IO and destroy them. | |
| 65 url_loader_ = pp::URLLoader(instance_); | |
| 66 url_scheme_ = instance_->GetUrlScheme(url); | |
| 67 bool grant_universal_access = false; | |
| 68 if (url_scheme_ == SCHEME_CHROME_EXTENSION) { | |
| 69 if (instance_->IsForeignMIMEType()) { | |
| 70 // This NEXE is being used as a content type handler rather than | |
| 71 // directly by an HTML document. In that case, the NEXE runs in the | |
| 72 // security context of the content it is rendering and the NEXE itself | |
| 73 // appears to be a cross-origin resource stored in a Chrome extension. | |
| 74 // We request universal access during this load so that we can read the | |
| 75 // NEXE. | |
| 76 grant_universal_access = true; | |
| 77 } | |
| 78 } else if (url_scheme_ == SCHEME_DATA) { | |
| 79 // TODO(elijahtaylor) Remove this when data URIs can be read without | |
| 80 // universal access. | |
| 81 if (streaming_to_buffer()) { | |
| 82 grant_universal_access = true; | |
| 83 } else { | |
| 84 // Open is to invoke a callback on success or failure. Schedule | |
| 85 // it asynchronously to follow PPAPI's convention and avoid reentrancy. | |
| 86 pp::Core* core = pp::Module::Get()->core(); | |
| 87 core->CallOnMainThread(0, callback, PP_ERROR_NOACCESS); | |
| 88 PLUGIN_PRINTF(("FileDownloader::Open (pp_error=PP_ERROR_NOACCESS)\n")); | |
| 89 return true; | |
| 90 } | |
| 91 } | |
| 92 | |
| 93 if (grant_universal_access) { | |
| 94 const PPB_URLLoaderTrusted* url_loaded_trusted = | |
| 95 static_cast<const PPB_URLLoaderTrusted*>( | |
| 96 module->GetBrowserInterface(PPB_URLLOADERTRUSTED_INTERFACE)); | |
| 97 if (url_loaded_trusted != NULL) | |
| 98 url_loaded_trusted->GrantUniversalAccess(url_loader_.pp_resource()); | |
| 99 } | |
| 100 | |
| 101 // Prepare the url request. | |
| 102 url_request.SetURL(url_); | |
| 103 | |
| 104 if (streaming_to_file()) { | |
| 105 file_reader_ = pp::FileIO(instance_); | |
| 106 url_request.SetStreamToFile(true); | |
| 107 } | |
| 108 } while (0); | |
| 109 | |
| 110 void (FileDownloader::*start_notify)(int32_t); | |
| 111 if (streaming_to_file()) | |
| 112 start_notify = &FileDownloader::URLLoadStartNotify; | |
| 113 else | |
| 114 start_notify = &FileDownloader::URLBufferStartNotify; | |
| 115 | |
| 116 // Request asynchronous download of the url providing an on-load callback. | |
| 117 // As long as this step is guaranteed to be asynchronous, we can call | |
| 118 // synchronously all other internal callbacks that eventually result in the | |
| 119 // invocation of the user callback. The user code will not be reentered. | |
| 120 pp::CompletionCallback onload_callback = | |
| 121 callback_factory_.NewRequiredCallback(start_notify); | |
| 122 int32_t pp_error = url_loader_.Open(url_request, onload_callback); | |
| 123 PLUGIN_PRINTF(("FileDownloader::Open (pp_error=%"NACL_PRId32")\n", pp_error)); | |
| 124 CHECK(pp_error == PP_OK_COMPLETIONPENDING); | |
| 125 return true; | |
| 126 } | |
| 127 | |
| 128 int32_t FileDownloader::GetPOSIXFileDescriptor() { | |
| 129 if (!streaming_to_file()) { | |
| 130 return NACL_NO_FILE_DESC; | |
| 131 } | |
| 132 // Use the trusted interface to get the file descriptor. | |
| 133 if (file_io_trusted_interface_ == NULL) { | |
| 134 return NACL_NO_FILE_DESC; | |
| 135 } | |
| 136 int32_t file_desc = file_io_trusted_interface_->GetOSFileDescriptor( | |
| 137 file_reader_.pp_resource()); | |
| 138 | |
| 139 | |
| 140 #if NACL_WINDOWS | |
| 141 // Convert the Windows HANDLE from Pepper to a POSIX file descriptor. | |
| 142 int32_t posix_desc = _open_osfhandle(file_desc, _O_RDWR | _O_BINARY); | |
| 143 if (posix_desc == -1) { | |
| 144 // Close the Windows HANDLE if it can't be converted. | |
| 145 CloseHandle(reinterpret_cast<HANDLE>(file_desc)); | |
| 146 return NACL_NO_FILE_DESC; | |
| 147 } | |
| 148 file_desc = posix_desc; | |
| 149 #endif | |
| 150 | |
| 151 return file_desc; | |
| 152 } | |
| 153 | |
| 154 int64_t FileDownloader::TimeSinceOpenMilliseconds() const { | |
| 155 int64_t now = NaClGetTimeOfDayMicroseconds(); | |
| 156 // If Open() wasn't called or we somehow return an earlier time now, just | |
| 157 // return the 0 rather than worse nonsense values. | |
| 158 if (open_time_ < 0 || now < open_time_) | |
| 159 return 0; | |
| 160 return (now - open_time_) / NACL_MICROS_PER_MILLI; | |
| 161 } | |
| 162 | |
| 163 bool FileDownloader::InitialResponseIsValid(int32_t pp_error) { | |
| 164 if (pp_error != PP_OK) { // Url loading failed. | |
| 165 file_open_notify_callback_.Run(pp_error); | |
| 166 return false; | |
| 167 } | |
| 168 | |
| 169 // Process the response, validating the headers to confirm successful loading. | |
| 170 pp::URLResponseInfo url_response(url_loader_.GetResponseInfo()); | |
| 171 if (url_response.is_null()) { | |
| 172 PLUGIN_PRINTF(( | |
| 173 "FileDownloader::InitialResponseIsValid (url_response=NULL)\n")); | |
| 174 file_open_notify_callback_.Run(PP_ERROR_FAILED); | |
| 175 return false; | |
| 176 } | |
| 177 // Note that URLs in the chrome-extension scheme produce different error | |
| 178 // codes than other schemes. This is because chrome-extension URLs are | |
| 179 // really a special kind of file scheme, and therefore do not produce HTTP | |
| 180 // status codes. | |
| 181 pp::Var full_url = url_response.GetURL(); | |
| 182 if (!full_url.is_string()) { | |
| 183 PLUGIN_PRINTF(( | |
| 184 "FileDownloader::InitialResponseIsValid (url is not a string)\n")); | |
| 185 file_open_notify_callback_.Run(PP_ERROR_FAILED); | |
| 186 return false; | |
| 187 } | |
| 188 bool status_ok = false; | |
| 189 int32_t status_code = url_response.GetStatusCode(); | |
| 190 switch (url_scheme_) { | |
| 191 case SCHEME_CHROME_EXTENSION: | |
| 192 PLUGIN_PRINTF(("FileDownloader::InitialResponseIsValid (chrome-extension " | |
| 193 "response status_code=%"NACL_PRId32")\n", status_code)); | |
| 194 status_ok = (status_code == kExtensionUrlRequestStatusOk); | |
| 195 break; | |
| 196 case SCHEME_DATA: | |
| 197 PLUGIN_PRINTF(("FileDownloader::InitialResponseIsValid (data URI " | |
| 198 "response status_code=%"NACL_PRId32")\n", status_code)); | |
| 199 status_ok = (status_code == kDataUriRequestStatusOk); | |
| 200 break; | |
| 201 case SCHEME_OTHER: | |
| 202 PLUGIN_PRINTF(("FileDownloader::InitialResponseIsValid (HTTP response " | |
| 203 "status_code=%"NACL_PRId32")\n", status_code)); | |
| 204 status_ok = (status_code == NACL_HTTP_STATUS_OK); | |
| 205 break; | |
| 206 } | |
| 207 | |
| 208 if (!status_ok) { | |
| 209 file_open_notify_callback_.Run(PP_ERROR_FAILED); | |
| 210 return false; | |
| 211 } | |
| 212 | |
| 213 return true; | |
| 214 } | |
| 215 | |
| 216 void FileDownloader::URLLoadStartNotify(int32_t pp_error) { | |
| 217 PLUGIN_PRINTF(("FileDownloader::URLLoadStartNotify (pp_error=%" | |
| 218 NACL_PRId32")\n", pp_error)); | |
| 219 | |
| 220 if (!InitialResponseIsValid(pp_error)) | |
| 221 return; | |
| 222 // Finish streaming the body providing an optional callback. | |
| 223 pp::CompletionCallback onload_callback = | |
| 224 callback_factory_.NewOptionalCallback( | |
| 225 &FileDownloader::URLLoadFinishNotify); | |
| 226 pp_error = url_loader_.FinishStreamingToFile(onload_callback); | |
| 227 bool async_notify_ok = (pp_error == PP_OK_COMPLETIONPENDING); | |
| 228 PLUGIN_PRINTF(("FileDownloader::URLLoadStartNotify (async_notify_ok=%d)\n", | |
| 229 async_notify_ok)); | |
| 230 if (!async_notify_ok) { | |
| 231 // Call manually to free allocated memory and report errors. This calls | |
| 232 // |file_open_notify_callback_| with |pp_error| as the parameter. | |
| 233 onload_callback.Run(pp_error); | |
| 234 } | |
| 235 } | |
| 236 | |
| 237 void FileDownloader::URLLoadFinishNotify(int32_t pp_error) { | |
| 238 PLUGIN_PRINTF(("FileDownloader::URLLoadFinishNotify (pp_error=%" | |
| 239 NACL_PRId32")\n", pp_error)); | |
| 240 if (pp_error != PP_OK) { // Streaming failed. | |
| 241 file_open_notify_callback_.Run(pp_error); | |
| 242 return; | |
| 243 } | |
| 244 | |
| 245 pp::URLResponseInfo url_response(url_loader_.GetResponseInfo()); | |
| 246 // Validated on load. | |
| 247 CHECK(url_response.GetStatusCode() == NACL_HTTP_STATUS_OK || | |
| 248 url_response.GetStatusCode() == kExtensionUrlRequestStatusOk); | |
| 249 | |
| 250 // Record the full url from the response. | |
| 251 pp::Var full_url = url_response.GetURL(); | |
| 252 PLUGIN_PRINTF(("FileDownloader::URLLoadFinishNotify (full_url=%s)\n", | |
| 253 full_url.DebugString().c_str())); | |
| 254 if (!full_url.is_string()) { | |
| 255 file_open_notify_callback_.Run(PP_ERROR_FAILED); | |
| 256 return; | |
| 257 } | |
| 258 url_ = full_url.AsString(); | |
| 259 | |
| 260 // The file is now fully downloaded. | |
| 261 pp::FileRef file(url_response.GetBodyAsFileRef()); | |
| 262 if (file.is_null()) { | |
| 263 PLUGIN_PRINTF(("FileDownloader::URLLoadFinishNotify (file=NULL)\n")); | |
| 264 file_open_notify_callback_.Run(PP_ERROR_FAILED); | |
| 265 return; | |
| 266 } | |
| 267 | |
| 268 // Open the file providing an optional callback. | |
| 269 pp::CompletionCallback onopen_callback = | |
| 270 callback_factory_.NewOptionalCallback(&FileDownloader::FileOpenNotify); | |
| 271 pp_error = file_reader_.Open(file, PP_FILEOPENFLAG_READ, onopen_callback); | |
| 272 bool async_notify_ok = (pp_error == PP_OK_COMPLETIONPENDING); | |
| 273 PLUGIN_PRINTF(("FileDownloader::URLLoadFinishNotify (async_notify_ok=%d)\n", | |
| 274 async_notify_ok)); | |
| 275 if (!async_notify_ok) { | |
| 276 // Call manually to free allocated memory and report errors. This calls | |
| 277 // |file_open_notify_callback_| with |pp_error| as the parameter. | |
| 278 onopen_callback.Run(pp_error); | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 void FileDownloader::URLBufferStartNotify(int32_t pp_error) { | |
| 283 PLUGIN_PRINTF(("FileDownloader::URLBufferStartNotify (pp_error=%" | |
| 284 NACL_PRId32")\n", pp_error)); | |
| 285 | |
| 286 if (!InitialResponseIsValid(pp_error)) | |
| 287 return; | |
| 288 // Finish streaming the body asynchronously providing a callback. | |
| 289 pp::CompletionCallback onread_callback = | |
| 290 callback_factory_.NewOptionalCallback(&FileDownloader::URLReadBodyNotify); | |
| 291 pp_error = url_loader_.ReadResponseBody(temp_buffer_, | |
| 292 kTempBufferSize, | |
| 293 onread_callback); | |
| 294 bool async_notify_ok = (pp_error == PP_OK_COMPLETIONPENDING); | |
| 295 PLUGIN_PRINTF(("FileDownloader::URLBufferStartNotify (async_notify_ok=%d)\n", | |
| 296 async_notify_ok)); | |
| 297 if (!async_notify_ok) { | |
| 298 onread_callback.Run(pp_error); | |
| 299 } | |
| 300 } | |
| 301 | |
| 302 void FileDownloader::URLReadBodyNotify(int32_t pp_error) { | |
| 303 PLUGIN_PRINTF(("FileDownloader::URLReadBodyNotify (pp_error=%" | |
| 304 NACL_PRId32")\n", pp_error)); | |
| 305 if (pp_error < PP_OK) { | |
| 306 file_open_notify_callback_.Run(pp_error); | |
| 307 } else if (pp_error == PP_OK) { | |
| 308 FileOpenNotify(PP_OK); | |
| 309 } else { | |
| 310 buffer_.insert(buffer_.end(), temp_buffer_, temp_buffer_ + pp_error); | |
| 311 pp::CompletionCallback onread_callback = | |
| 312 callback_factory_.NewOptionalCallback( | |
| 313 &FileDownloader::URLReadBodyNotify); | |
| 314 pp_error = url_loader_.ReadResponseBody(temp_buffer_, | |
| 315 kTempBufferSize, | |
| 316 onread_callback); | |
| 317 bool async_notify_ok = (pp_error == PP_OK_COMPLETIONPENDING); | |
| 318 if (!async_notify_ok) { | |
| 319 onread_callback.Run(pp_error); | |
| 320 } | |
| 321 } | |
| 322 } | |
| 323 | |
| 324 void FileDownloader::FileOpenNotify(int32_t pp_error) { | |
| 325 PLUGIN_PRINTF(("FileDownloader::FileOpenNotify (pp_error=%"NACL_PRId32")\n", | |
| 326 pp_error)); | |
| 327 file_open_notify_callback_.Run(pp_error); | |
| 328 } | |
| 329 | |
| 330 bool FileDownloader::streaming_to_file() const { | |
| 331 return (flags_ & DOWNLOAD_TO_BUFFER) == 0; | |
| 332 } | |
| 333 | |
| 334 bool FileDownloader::streaming_to_buffer() const { | |
| 335 return (flags_ & DOWNLOAD_TO_BUFFER) == 1; | |
| 336 } | |
| 337 | |
| 338 } // namespace plugin | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 7799028:
Remove src/trusted/plugin (Closed)
Base URL: svn://svn.chromium.org/native_client/trunk/src/native_client