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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 "chrome/browser/extensions/extension_error_reporter.h"
      6 
      7 #include "build/build_config.h"
      8 
      9 #include "base/bind.h"
     10 #include "base/bind_helpers.h"
     11 #include "base/files/file_path.h"
     12 #include "base/logging.h"
     13 #include "base/message_loop/message_loop.h"
     14 #include "base/strings/stringprintf.h"
     15 #include "base/strings/utf_string_conversions.h"
     16 #include "chrome/browser/profiles/profile.h"
     17 #include "chrome/browser/ui/simple_message_box.h"
     18 #include "content/public/browser/notification_service.h"
     19 #include "extensions/browser/notification_types.h"
     20 
     21 ExtensionErrorReporter* ExtensionErrorReporter::instance_ = NULL;
     22 
     23 // static
     24 void ExtensionErrorReporter::Init(bool enable_noisy_errors) {
     25   if (!instance_) {
     26     instance_ = new ExtensionErrorReporter(enable_noisy_errors);
     27   }
     28 }
     29 
     30 // static
     31 ExtensionErrorReporter* ExtensionErrorReporter::GetInstance() {
     32   CHECK(instance_) << "Init() was never called";
     33   return instance_;
     34 }
     35 
     36 ExtensionErrorReporter::ExtensionErrorReporter(bool enable_noisy_errors)
     37     : ui_loop_(base::MessageLoop::current()),
     38       enable_noisy_errors_(enable_noisy_errors) {
     39 }
     40 
     41 ExtensionErrorReporter::~ExtensionErrorReporter() {}
     42 
     43 void ExtensionErrorReporter::ReportLoadError(
     44     const base::FilePath& extension_path,
     45     const std::string& error,
     46     content::BrowserContext* browser_context,
     47     bool be_noisy) {
     48   content::NotificationService::current()->Notify(
     49       extensions::NOTIFICATION_EXTENSION_LOAD_ERROR,
     50       content::Source<Profile>(Profile::FromBrowserContext(browser_context)),
     51       content::Details<const std::string>(&error));
     52 
     53   std::string path_str = base::UTF16ToUTF8(extension_path.LossyDisplayName());
     54   base::string16 message = base::UTF8ToUTF16(
     55       base::StringPrintf("Could not load extension from '%s'. %s",
     56                          path_str.c_str(),
     57                          error.c_str()));
     58   ReportError(message, be_noisy);
     59   FOR_EACH_OBSERVER(Observer,
     60                     observers_,
     61                     OnLoadFailure(browser_context, extension_path, error));
     62 }
     63 
     64 void ExtensionErrorReporter::ReportError(const base::string16& message,
     65                                          bool be_noisy) {
     66   // NOTE: There won't be a ui_loop_ in the unit test environment.
     67   if (ui_loop_) {
     68     CHECK(base::MessageLoop::current() == ui_loop_)
     69         << "ReportError can only be called from the UI thread.";
     70   }
     71 
     72   errors_.push_back(message);
     73 
     74   // TODO(aa): Print the error message out somewhere better. I think we are
     75   // going to need some sort of 'extension inspector'.
     76   LOG(WARNING) << "Extension error: " << message;
     77 
     78   if (enable_noisy_errors_ && be_noisy) {
     79     chrome::ShowMessageBox(NULL,
     80                            base::ASCIIToUTF16("Extension error"),
     81                            message,
     82                            chrome::MESSAGE_BOX_TYPE_WARNING);
     83   }
     84 }
     85 
     86 const std::vector<base::string16>* ExtensionErrorReporter::GetErrors() {
     87   return &errors_;
     88 }
     89 
     90 void ExtensionErrorReporter::ClearErrors() {
     91   errors_.clear();
     92 }
     93 
     94 void ExtensionErrorReporter::AddObserver(Observer* observer) {
     95   observers_.AddObserver(observer);
     96 }
     97 
     98 void ExtensionErrorReporter::RemoveObserver(Observer* observer) {
     99   observers_.RemoveObserver(observer);
    100 }
    101