chrome/browser/apps/install_chrome_app.cc

   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/install_chrome_app.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/command_line.h"
   9 #include "base/strings/stringprintf.h"
  10 #include "chrome/browser/browser_process.h"
  11 #include "chrome/browser/ui/browser_list.h"
  12 #include "chrome/browser/ui/browser_navigator.h"
  13 #include "extensions/common/extension.h"
  14 #include "google_apis/gaia/gaia_urls.h"
  15 #include "net/url_request/url_fetcher.h"
  16 #include "net/url_request/url_fetcher_delegate.h"
  17
  18 namespace {
  19
  20 // The URL to the webstore page for a specific app. "_asi=1" instructs webstore
  21 // to immediately try to install the app if the referrer is the sign in page.
  22 // This is actually the short form of the URL which just redirects to the full
  23 // URL. Since "_asi=1" only works on the full url, we need to resolve it first
  24 // before navigating the user to it.
  25 const char kWebstoreUrlFormat[] =
  26     "https://chrome.google.com/webstore/detail/%s?_asi=1";
  27
  28 // The URL for the sign in page, set as the referrer to webstore.
  29 const char kAccountsUrl[] = "https://accounts.google.com/ServiceLogin";
  30
  31 // Returns the webstore URL for an app.
  32 GURL GetAppInstallUrl(const std::string& app_id) {
  33   return GURL(base::StringPrintf(kWebstoreUrlFormat, app_id.c_str()));
  34 }
  35
  36 void NavigateToUrlWithAccountsReferrer(const GURL& url) {
  37   Browser* browser =
  38       BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_NATIVE)->get(0);
  39   if (!browser)
  40     return;
  41
  42   chrome::NavigateParams params(
  43       browser, url, content::PAGE_TRANSITION_AUTO_TOPLEVEL);
  44   params.window_action = chrome::NavigateParams::SHOW_WINDOW;
  45   params.referrer = content::Referrer();
  46   params.referrer.url = GURL(kAccountsUrl);
  47   chrome::Navigate(&params);
  48 }
  49
  50 class AppURLFetcher : net::URLFetcherDelegate {
  51  public:
  52   explicit AppURLFetcher(const std::string& app_id);
  53
  54   // net::URLFetcherDelegate OVERRIDES:
  55   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
  56
  57  private:
  58   virtual ~AppURLFetcher();
  59
  60   scoped_ptr<net::URLFetcher> url_fetcher_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(AppURLFetcher);
  63 };
  64
  65 AppURLFetcher::AppURLFetcher(const std::string& app_id) {
  66   url_fetcher_.reset(net::URLFetcher::Create(
  67       GetAppInstallUrl(app_id), net::URLFetcher::GET, this));
  68   url_fetcher_->SetRequestContext(g_browser_process->system_request_context());
  69   url_fetcher_->SetStopOnRedirect(true);
  70   url_fetcher_->Start();
  71 }
  72
  73 AppURLFetcher::~AppURLFetcher() {
  74 }
  75
  76 void AppURLFetcher::OnURLFetchComplete(const net::URLFetcher* source) {
  77   if (source->GetResponseCode() == 301) {
  78     // Moved permanently.
  79     NavigateToUrlWithAccountsReferrer(source->GetURL());
  80   }
  81
  82   delete this;
  83 }
  84
  85 }  // namespace
  86
  87 namespace install_chrome_app {
  88
  89 void InstallChromeApp(const std::string& app_id) {
  90   if (!extensions::Extension::IdIsValid(app_id))
  91     return;
  92
  93   new AppURLFetcher(app_id);
  94 }
  95
  96 }  // namespace install_chrome_app