content/child/npapi/plugin_stream_posix.cc

   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 "content/child/npapi/plugin_stream.h"
   6
   7 #include <string.h>
   8
   9 #include "base/files/file_path.h"
  10 #include "base/files/file_util.h"
  11 #include "base/logging.h"
  12 #include "content/child/npapi/plugin_instance.h"
  13
  14 namespace content {
  15
  16 void PluginStream::ResetTempFileHandle() {
  17   temp_file_ = NULL;
  18 }
  19
  20 void PluginStream::ResetTempFileName() {
  21   temp_file_path_ = base::FilePath();
  22 }
  23
  24 void PluginStream::WriteAsFile() {
  25   if (RequestedPluginModeIsAsFile())
  26     instance_->NPP_StreamAsFile(&stream_, temp_file_path_.value().c_str());
  27 }
  28
  29 size_t PluginStream::WriteBytes(const char* buf, size_t length) {
  30   return fwrite(buf, sizeof(char), length, temp_file_);
  31 }
  32
  33 bool PluginStream::OpenTempFile() {
  34   DCHECK_EQ(static_cast<FILE*>(NULL), temp_file_);
  35
  36   if (base::CreateTemporaryFile(&temp_file_path_))
  37     temp_file_ = base::OpenFile(temp_file_path_, "a");
  38
  39   if (!temp_file_) {
  40     base::DeleteFile(temp_file_path_, false);
  41     ResetTempFileName();
  42     return false;
  43   }
  44   return true;
  45 }
  46
  47 void PluginStream::CloseTempFile() {
  48   if (!TempFileIsValid())
  49     return;
  50
  51   base::CloseFile(temp_file_);
  52   ResetTempFileHandle();
  53 }
  54
  55 bool PluginStream::TempFileIsValid() const {
  56   return temp_file_ != NULL;
  57 }
  58
  59 }  // namespace content