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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 "remoting/host/json_host_config.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/file_util.h"
      9 #include "base/files/important_file_writer.h"
     10 #include "base/json/json_reader.h"
     11 #include "base/json/json_writer.h"
     12 #include "base/location.h"
     13 #include "base/memory/scoped_ptr.h"
     14 #include "base/values.h"
     15 
     16 namespace remoting {
     17 
     18 JsonHostConfig::JsonHostConfig(const base::FilePath& filename)
     19     : filename_(filename) {
     20 }
     21 
     22 JsonHostConfig::~JsonHostConfig() {}
     23 
     24 bool JsonHostConfig::Read() {
     25   DCHECK(CalledOnValidThread());
     26 
     27   // TODO(sergeyu): Implement better error handling here.
     28   std::string file_content;
     29   if (!base::ReadFileToString(filename_, &file_content)) {
     30     LOG(WARNING) << "Failed to read " << filename_.value();
     31     return false;
     32   }
     33 
     34   return SetSerializedData(file_content);
     35 }
     36 
     37 bool JsonHostConfig::Save() {
     38   DCHECK(CalledOnValidThread());
     39 
     40   return base::ImportantFileWriter::WriteFileAtomically(filename_,
     41                                                         GetSerializedData());
     42 }
     43 
     44 std::string JsonHostConfig::GetSerializedData() {
     45   std::string data;
     46   base::JSONWriter::Write(values_.get(), &data);
     47   return data;
     48 }
     49 
     50 bool JsonHostConfig::SetSerializedData(const std::string& config) {
     51   scoped_ptr<base::Value> value(
     52       base::JSONReader::Read(config, base::JSON_ALLOW_TRAILING_COMMAS));
     53   if (value.get() == NULL || !value->IsType(base::Value::TYPE_DICTIONARY)) {
     54     LOG(WARNING) << "Failed to parse " << filename_.value();
     55     return false;
     56   }
     57 
     58   base::DictionaryValue* dictionary =
     59       static_cast<base::DictionaryValue*>(value.release());
     60   values_.reset(dictionary);
     61   return true;
     62 }
     63 
     64 }  // namespace remoting
     65