1/*
2 * Copyright 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16#include "nfc_config.h"
17#include "NfcAdaptation.h"
18
19#include <android-base/file.h>
20#include <android-base/logging.h>
21#include <android-base/parseint.h>
22#include <android-base/strings.h>
23
24#include <config.h>
25
26using namespace ::std;
27using namespace ::android::base;
28
29namespace {
30
31std::string findConfigPath() {
32  const vector<string> search_path = {"/odm/etc/", "/vendor/etc/",
33                                      "/product/etc/", "/etc/"};
34  const string file_name = "libnfc-nci.conf";
35
36  for (string path : search_path) {
37    path.append(file_name);
38    struct stat file_stat;
39    if (stat(path.c_str(), &file_stat) != 0) continue;
40    if (S_ISREG(file_stat.st_mode)) return path;
41  }
42  return "";
43}
44
45}  // namespace
46
47void NfcConfig::loadConfig() {
48  string config_path = findConfigPath();
49  CHECK(config_path != "");
50  config_.parseFromFile(config_path);
51  /* Read vendor specific configs */
52  NfcAdaptation& theInstance = NfcAdaptation::GetInstance();
53  std::map<std::string, ConfigValue> configMap;
54  theInstance.GetVendorConfigs(configMap);
55  for (auto config : configMap) {
56    config_.addConfig(config.first, config.second);
57  }
58}
59
60NfcConfig::NfcConfig() { loadConfig(); }
61
62NfcConfig& NfcConfig::getInstance() {
63  static NfcConfig theInstance;
64  if (theInstance.config_.isEmpty()) {
65    theInstance.loadConfig();
66  }
67  return theInstance;
68}
69
70bool NfcConfig::hasKey(const std::string& key) {
71  return getInstance().config_.hasKey(key);
72}
73
74std::string NfcConfig::getString(const std::string& key) {
75  return getInstance().config_.getString(key);
76}
77
78std::string NfcConfig::getString(const std::string& key,
79                                 std::string default_value) {
80  if (hasKey(key)) return getString(key);
81  return default_value;
82}
83
84unsigned NfcConfig::getUnsigned(const std::string& key) {
85  return getInstance().config_.getUnsigned(key);
86}
87
88unsigned NfcConfig::getUnsigned(const std::string& key,
89                                unsigned default_value) {
90  if (hasKey(key)) return getUnsigned(key);
91  return default_value;
92}
93
94std::vector<uint8_t> NfcConfig::getBytes(const std::string& key) {
95  return getInstance().config_.getBytes(key);
96}
97
98void NfcConfig::clear() { getInstance().config_.clear(); }
99