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      1 // Copyright 2014 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/apps/drive/drive_app_provider.h"
      6 
      7 #include <vector>
      8 
      9 #include "base/bind.h"
     10 #include "base/bind_helpers.h"
     11 #include "base/logging.h"
     12 #include "base/message_loop/message_loop.h"
     13 #include "base/stl_util.h"
     14 #include "chrome/browser/apps/drive/drive_app_converter.h"
     15 #include "chrome/browser/apps/drive/drive_app_mapping.h"
     16 #include "chrome/browser/apps/drive/drive_service_bridge.h"
     17 #include "chrome/browser/drive/drive_app_registry.h"
     18 #include "chrome/browser/extensions/extension_service.h"
     19 #include "chrome/browser/profiles/profile.h"
     20 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
     21 #include "extensions/browser/extension_registry.h"
     22 #include "extensions/browser/extension_registry_factory.h"
     23 #include "extensions/browser/extension_system.h"
     24 #include "extensions/common/extension.h"
     25 
     26 using extensions::Extension;
     27 using extensions::ExtensionRegistry;
     28 
     29 namespace {
     30 
     31 void IgnoreUninstallResult(google_apis::GDataErrorCode) {
     32 }
     33 
     34 }  // namespace
     35 
     36 DriveAppProvider::DriveAppProvider(Profile* profile)
     37     : profile_(profile),
     38       service_bridge_(DriveServiceBridge::Create(profile).Pass()),
     39       mapping_(new DriveAppMapping(profile->GetPrefs())),
     40       weak_ptr_factory_(this) {
     41   service_bridge_->GetAppRegistry()->AddObserver(this);
     42   ExtensionRegistry::Get(profile_)->AddObserver(this);
     43 }
     44 
     45 DriveAppProvider::~DriveAppProvider() {
     46   ExtensionRegistry::Get(profile_)->RemoveObserver(this);
     47   service_bridge_->GetAppRegistry()->RemoveObserver(this);
     48 }
     49 
     50 // static
     51 void DriveAppProvider::AppendDependsOnFactories(
     52     std::set<BrowserContextKeyedServiceFactory*>* factories) {
     53   factories->insert(extensions::ExtensionRegistryFactory::GetInstance());
     54   DriveServiceBridge::AppendDependsOnFactories(factories);
     55 }
     56 
     57 void DriveAppProvider::SetDriveServiceBridgeForTest(
     58     scoped_ptr<DriveServiceBridge> test_bridge) {
     59   service_bridge_->GetAppRegistry()->RemoveObserver(this);
     60   service_bridge_ = test_bridge.Pass();
     61   service_bridge_->GetAppRegistry()->AddObserver(this);
     62 }
     63 
     64 void DriveAppProvider::UpdateMappingAndExtensionSystem(
     65     const std::string& drive_app_id,
     66     const Extension* new_app,
     67     bool is_new_app_generated) {
     68   const std::string& new_chrome_app_id = new_app->id();
     69 
     70   const std::string existing_chrome_app_id =
     71       mapping_->GetChromeApp(drive_app_id);
     72   if (existing_chrome_app_id == new_chrome_app_id)
     73     return;
     74 
     75   const bool is_existing_app_generated =
     76       mapping_->IsChromeAppGenerated(existing_chrome_app_id);
     77   mapping_->Add(drive_app_id, new_chrome_app_id, is_new_app_generated);
     78 
     79   const Extension* existing_app =
     80       ExtensionRegistry::Get(profile_)->GetExtensionById(
     81           existing_chrome_app_id, ExtensionRegistry::EVERYTHING);
     82   if (existing_app && is_existing_app_generated) {
     83     extensions::ExtensionSystem::Get(profile_)
     84         ->extension_service()
     85         ->UninstallExtension(existing_chrome_app_id, false, NULL);
     86   }
     87 }
     88 
     89 void DriveAppProvider::ProcessDeferredOnExtensionInstalled(
     90     const std::string drive_app_id,
     91     const std::string chrome_app_id) {
     92   const Extension* app = ExtensionRegistry::Get(profile_)->GetExtensionById(
     93       chrome_app_id, ExtensionRegistry::EVERYTHING);
     94   if (!app)
     95     return;
     96 
     97   UpdateMappingAndExtensionSystem(drive_app_id, app, false);
     98 }
     99 
    100 void DriveAppProvider::SchedulePendingConverters() {
    101   if (pending_converters_.empty())
    102     return;
    103 
    104   if (!pending_converters_.front()->IsStarted())
    105     pending_converters_.front()->Start();
    106 }
    107 
    108 void DriveAppProvider::OnLocalAppConverted(const DriveAppConverter* converter,
    109                                            bool success) {
    110   DCHECK_EQ(pending_converters_.front(), converter);
    111 
    112   if (success) {
    113     const bool was_generated =
    114         mapping_->GetDriveApp(converter->extension()->id()) ==
    115             converter->drive_app_info().app_id &&
    116         mapping_->IsChromeAppGenerated(converter->extension()->id());
    117     UpdateMappingAndExtensionSystem(
    118         converter->drive_app_info().app_id,
    119         converter->extension(),
    120         converter->is_new_install() || was_generated);
    121   } else {
    122     LOG(WARNING) << "Failed to convert drive app to web app, "
    123                  << "drive app id= " << converter->drive_app_info().app_id
    124                  << ", name=" << converter->drive_app_info().app_name;
    125   }
    126 
    127   pending_converters_.erase(pending_converters_.begin());
    128   SchedulePendingConverters();
    129 }
    130 
    131 bool DriveAppProvider::IsMappedUrlAppUpToDate(
    132     const drive::DriveAppInfo& drive_app) const {
    133   const std::string& url_app_id = mapping_->GetChromeApp(drive_app.app_id);
    134   if (url_app_id.empty())
    135     return false;
    136 
    137   const Extension* url_app = ExtensionRegistry::Get(profile_)->GetExtensionById(
    138       url_app_id, ExtensionRegistry::EVERYTHING);
    139   if (!url_app)
    140     return false;
    141   DCHECK(url_app->is_hosted_app() && url_app->from_bookmark());
    142 
    143   return drive_app.app_name == url_app->name() &&
    144          drive_app.create_url ==
    145              extensions::AppLaunchInfo::GetLaunchWebURL(url_app);
    146 }
    147 
    148 void DriveAppProvider::AddOrUpdateDriveApp(
    149     const drive::DriveAppInfo& drive_app) {
    150   const Extension* chrome_app =
    151       ExtensionRegistry::Get(profile_)->GetExtensionById(
    152           drive_app.product_id, ExtensionRegistry::EVERYTHING);
    153   if (chrome_app) {
    154     UpdateMappingAndExtensionSystem(drive_app.app_id, chrome_app, false);
    155     return;
    156   }
    157 
    158   if (IsMappedUrlAppUpToDate(drive_app))
    159     return;
    160 
    161   ScopedVector<DriveAppConverter>::iterator it = pending_converters_.begin();
    162   while (it != pending_converters_.end()) {
    163     if (!(*it)->IsStarted() &&
    164         (*it)->drive_app_info().app_id == drive_app.app_id) {
    165       it = pending_converters_.erase(it);
    166     } else {
    167       ++it;
    168     }
    169   }
    170 
    171   pending_converters_.push_back(
    172       new DriveAppConverter(profile_,
    173                             drive_app,
    174                             base::Bind(&DriveAppProvider::OnLocalAppConverted,
    175                                        base::Unretained(this))));
    176 }
    177 
    178 void DriveAppProvider::ProcessRemovedDriveApp(const std::string& drive_app_id) {
    179   const std::string chrome_app_id = mapping_->GetChromeApp(drive_app_id);
    180   const bool is_generated = mapping_->IsChromeAppGenerated(chrome_app_id);
    181   mapping_->Remove(drive_app_id);
    182 
    183   if (chrome_app_id.empty() || !is_generated)
    184     return;
    185 
    186   const Extension* existing_app =
    187       ExtensionRegistry::Get(profile_)
    188           ->GetExtensionById(chrome_app_id, ExtensionRegistry::EVERYTHING);
    189   if (!existing_app)
    190     return;
    191 
    192   extensions::ExtensionSystem::Get(profile_)
    193       ->extension_service()
    194       ->UninstallExtension(chrome_app_id, false, NULL);
    195 }
    196 
    197 void DriveAppProvider::OnDriveAppRegistryUpdated() {
    198   service_bridge_->GetAppRegistry()->GetAppList(&drive_apps_);
    199 
    200   IdSet current_ids;
    201   for (size_t i = 0; i < drive_apps_.size(); ++i)
    202     current_ids.insert(drive_apps_[i].app_id);
    203 
    204   const IdSet existing_ids = mapping_->GetDriveAppIds();
    205   const IdSet ids_to_remove =
    206       base::STLSetDifference<IdSet>(existing_ids, current_ids);
    207   for (IdSet::const_iterator it = ids_to_remove.begin();
    208        it != ids_to_remove.end();
    209        ++it) {
    210     ProcessRemovedDriveApp(*it);
    211   }
    212 
    213   for (size_t i = 0; i < drive_apps_.size(); ++i) {
    214     AddOrUpdateDriveApp(drive_apps_[i]);
    215   }
    216   SchedulePendingConverters();
    217 }
    218 
    219 void DriveAppProvider::OnExtensionInstalled(
    220     content::BrowserContext* browser_context,
    221     const Extension* extension) {
    222   // Bail if the |extension| is installed from a converter. The post install
    223   // processing will be handled in OnLocalAppConverted.
    224   if (!pending_converters_.empty() &&
    225       pending_converters_.front()->IsInstalling(extension->id())) {
    226     return;
    227   }
    228 
    229   // Only user installed app reaches here. If it is mapped, make sure it is not
    230   // tagged as generated.
    231   const std::string drive_app_id = mapping_->GetDriveApp(extension->id());
    232   if (!drive_app_id.empty() &&
    233       mapping_->IsChromeAppGenerated(extension->id())) {
    234     mapping_->Add(drive_app_id, extension->id(), false);
    235     return;
    236   }
    237 
    238   for (size_t i = 0; i < drive_apps_.size(); ++i) {
    239     if (drive_apps_[i].product_id == extension->id()) {
    240       // Defer the processing because it touches the extensions system and
    241       // it is better to let the current task finish to avoid unexpected
    242       // incomplete status.
    243       base::MessageLoop::current()->PostTask(
    244           FROM_HERE,
    245           base::Bind(&DriveAppProvider::ProcessDeferredOnExtensionInstalled,
    246                      weak_ptr_factory_.GetWeakPtr(),
    247                      drive_apps_[i].app_id,
    248                      extension->id()));
    249       return;
    250     }
    251   }
    252 }
    253 
    254 void DriveAppProvider::OnExtensionUninstalled(
    255     content::BrowserContext* browser_context,
    256     const Extension* extension) {
    257   std::string drive_app_id = mapping_->GetDriveApp(extension->id());
    258   if (drive_app_id.empty())
    259     return;
    260 
    261   service_bridge_->GetAppRegistry()->UninstallApp(
    262       drive_app_id, base::Bind(&IgnoreUninstallResult));
    263 }
    264