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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 "content/child/npapi/plugin_stream.h"
      6 
      7 #include <string.h>
      8 
      9 #include "base/file_util.h"
     10 #include "base/files/file_path.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 (file_util::CreateTemporaryFile(&temp_file_path_))
     37     temp_file_ = file_util::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   file_util::CloseFile(temp_file_);
     52   ResetTempFileHandle();
     53 }
     54 
     55 bool PluginStream::TempFileIsValid() const {
     56   return temp_file_ != NULL;
     57 }
     58 
     59 }  // namespace content
     60