1// Copyright (c) 2011 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 "chrome/browser/ui/webui/crashes_ui.h"
6
7#include "base/i18n/time_formatting.h"
8#include "base/memory/ref_counted_memory.h"
9#include "base/utf_string_conversions.h"
10#include "base/values.h"
11#include "chrome/browser/browser_process.h"
12#include "chrome/browser/crash_upload_list.h"
13#include "chrome/browser/prefs/pref_service.h"
14#include "chrome/browser/profiles/profile.h"
15#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
16#include "chrome/common/chrome_version_info.h"
17#include "chrome/common/jstemplate_builder.h"
18#include "chrome/common/pref_names.h"
19#include "chrome/common/url_constants.h"
20#include "content/browser/tab_contents/tab_contents.h"
21#include "grit/browser_resources.h"
22#include "grit/chromium_strings.h"
23#include "grit/generated_resources.h"
24#include "grit/theme_resources.h"
25#include "ui/base/l10n/l10n_util.h"
26#include "ui/base/resource/resource_bundle.h"
27
28#if defined(OS_CHROMEOS)
29#include "chrome/browser/chromeos/metrics_cros_settings_provider.h"
30#endif
31
32namespace {
33
34///////////////////////////////////////////////////////////////////////////////
35//
36// CrashesUIHTMLSource
37//
38///////////////////////////////////////////////////////////////////////////////
39
40class CrashesUIHTMLSource : public ChromeURLDataManager::DataSource {
41 public:
42  CrashesUIHTMLSource()
43      : DataSource(chrome::kChromeUICrashesHost, MessageLoop::current()) {}
44
45  // Called when the network layer has requested a resource underneath
46  // the path we registered.
47  virtual void StartDataRequest(const std::string& path,
48                                bool is_incognito,
49                                int request_id);
50  virtual std::string GetMimeType(const std::string&) const {
51    return "text/html";
52  }
53
54 private:
55  ~CrashesUIHTMLSource() {}
56
57  DISALLOW_COPY_AND_ASSIGN(CrashesUIHTMLSource);
58};
59
60void CrashesUIHTMLSource::StartDataRequest(const std::string& path,
61                                           bool is_incognito,
62                                           int request_id) {
63  DictionaryValue localized_strings;
64  localized_strings.SetString("crashesTitle",
65      l10n_util::GetStringUTF16(IDS_CRASHES_TITLE));
66  localized_strings.SetString("crashCountFormat",
67      l10n_util::GetStringUTF16(IDS_CRASHES_CRASH_COUNT_BANNER_FORMAT));
68  localized_strings.SetString("crashHeaderFormat",
69      l10n_util::GetStringUTF16(IDS_CRASHES_CRASH_HEADER_FORMAT));
70  localized_strings.SetString("crashTimeFormat",
71      l10n_util::GetStringUTF16(IDS_CRASHES_CRASH_TIME_FORMAT));
72  localized_strings.SetString("bugLinkText",
73      l10n_util::GetStringUTF16(IDS_CRASHES_BUG_LINK_LABEL));
74  localized_strings.SetString("noCrashesMessage",
75      l10n_util::GetStringUTF16(IDS_CRASHES_NO_CRASHES_MESSAGE));
76  localized_strings.SetString("disabledHeader",
77      l10n_util::GetStringUTF16(IDS_CRASHES_DISABLED_HEADER));
78  localized_strings.SetString("disabledMessage",
79      l10n_util::GetStringUTF16(IDS_CRASHES_DISABLED_MESSAGE));
80
81  ChromeURLDataManager::DataSource::SetFontAndTextDirection(&localized_strings);
82
83  static const base::StringPiece crashes_html(
84      ResourceBundle::GetSharedInstance().GetRawDataResource(IDR_CRASHES_HTML));
85  std::string full_html =
86      jstemplate_builder::GetI18nTemplateHtml(crashes_html, &localized_strings);
87  jstemplate_builder::AppendJsTemplateSourceHtml(&full_html);
88
89  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
90  html_bytes->data.resize(full_html.size());
91  std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
92
93  SendResponse(request_id, html_bytes);
94}
95
96////////////////////////////////////////////////////////////////////////////////
97//
98// CrashesDOMHandler
99//
100////////////////////////////////////////////////////////////////////////////////
101
102// The handler for Javascript messages for the chrome://crashes/ page.
103class CrashesDOMHandler : public WebUIMessageHandler,
104                          public CrashUploadList::Delegate {
105 public:
106  explicit CrashesDOMHandler();
107  virtual ~CrashesDOMHandler();
108
109  // WebUIMessageHandler implementation.
110  virtual WebUIMessageHandler* Attach(WebUI* web_ui);
111  virtual void RegisterMessages();
112
113  // CrashUploadList::Delegate implemenation.
114  virtual void OnCrashListAvailable();
115
116 private:
117  // Asynchronously fetches the list of crashes. Called from JS.
118  void HandleRequestCrashes(const ListValue* args);
119
120  // Sends the recent crashes list JS.
121  void UpdateUI();
122
123  // Returns whether or not crash reporting is enabled.
124  bool CrashReportingEnabled() const;
125
126  scoped_refptr<CrashUploadList> upload_list_;
127  bool list_available_;
128  bool js_request_pending_;
129
130  DISALLOW_COPY_AND_ASSIGN(CrashesDOMHandler);
131};
132
133CrashesDOMHandler::CrashesDOMHandler()
134    : list_available_(false), js_request_pending_(false) {
135  upload_list_ = CrashUploadList::Create(this);
136}
137
138CrashesDOMHandler::~CrashesDOMHandler() {
139  upload_list_->ClearDelegate();
140}
141
142WebUIMessageHandler* CrashesDOMHandler::Attach(WebUI* web_ui) {
143  upload_list_->LoadCrashListAsynchronously();
144  return WebUIMessageHandler::Attach(web_ui);
145}
146
147void CrashesDOMHandler::RegisterMessages() {
148  web_ui_->RegisterMessageCallback("requestCrashList",
149      NewCallback(this, &CrashesDOMHandler::HandleRequestCrashes));
150}
151
152void CrashesDOMHandler::HandleRequestCrashes(const ListValue* args) {
153  if (!CrashReportingEnabled() || list_available_)
154    UpdateUI();
155  else
156    js_request_pending_ = true;
157}
158
159void CrashesDOMHandler::OnCrashListAvailable() {
160  list_available_ = true;
161  if (js_request_pending_)
162    UpdateUI();
163}
164
165void CrashesDOMHandler::UpdateUI() {
166  bool crash_reporting_enabled = CrashReportingEnabled();
167  ListValue crash_list;
168
169  if (crash_reporting_enabled) {
170    std::vector<CrashUploadList::CrashInfo> crashes;
171    upload_list_->GetUploadedCrashes(50, &crashes);
172
173    for (std::vector<CrashUploadList::CrashInfo>::iterator i = crashes.begin();
174         i != crashes.end(); ++i) {
175      DictionaryValue* crash = new DictionaryValue();
176      crash->SetString("id", i->crash_id);
177      crash->SetString("time",
178                       base::TimeFormatFriendlyDateAndTime(i->crash_time));
179      crash_list.Append(crash);
180    }
181  }
182
183  FundamentalValue enabled(crash_reporting_enabled);
184
185  const chrome::VersionInfo version_info;
186  StringValue version(version_info.Version());
187
188  web_ui_->CallJavascriptFunction("updateCrashList", enabled, crash_list,
189                                  version);
190}
191
192bool CrashesDOMHandler::CrashReportingEnabled() const {
193#if defined(GOOGLE_CHROME_BUILD) && !defined(OS_CHROMEOS)
194  PrefService* prefs = g_browser_process->local_state();
195  return prefs->GetBoolean(prefs::kMetricsReportingEnabled);
196#elif defined(GOOGLE_CHROME_BUILD) && defined(OS_CHROMEOS)
197  return chromeos::MetricsCrosSettingsProvider::GetMetricsStatus();
198#else
199  return false;
200#endif
201}
202
203}  // namespace
204
205///////////////////////////////////////////////////////////////////////////////
206//
207// CrashesUI
208//
209///////////////////////////////////////////////////////////////////////////////
210
211CrashesUI::CrashesUI(TabContents* contents) : WebUI(contents) {
212  AddMessageHandler((new CrashesDOMHandler())->Attach(this));
213
214  CrashesUIHTMLSource* html_source = new CrashesUIHTMLSource();
215
216  // Set up the chrome://crashes/ source.
217  contents->profile()->GetChromeURLDataManager()->AddDataSource(html_source);
218}
219
220// static
221RefCountedMemory* CrashesUI::GetFaviconResourceBytes() {
222  return ResourceBundle::GetSharedInstance().
223      LoadDataResourceBytes(IDR_SAD_FAVICON);
224}
225