chrome/installer/util/eula_util.cc

   1 // Copyright (c) 2013 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/installer/util/eula_util.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "chrome/common/chrome_constants.h"
  10 #include "chrome/installer/util/browser_distribution.h"
  11 #include "chrome/installer/util/install_util.h"
  12 #include "chrome/installer/util/installation_state.h"
  13 #include "chrome/installer/util/master_preferences.h"
  14 #include "chrome/installer/util/master_preferences_constants.h"
  15 #include "chrome/installer/util/util_constants.h"
  16
  17 namespace installer {
  18
  19 namespace {
  20
  21 bool IsChromeFirstRunPending(BrowserDistribution* dist) {
  22   // Chrome creates the first run sentinel after the user has gone through the
  23   // first-run flow. Assume Chrome has been run if the path to the sentinel
  24   // cannot be determined.
  25   base::FilePath first_run_sentinel;
  26   return InstallUtil::GetSentinelFilePath(chrome::kFirstRunSentinel,
  27                                           dist,
  28                                           &first_run_sentinel)
  29       && !base::PathExists(first_run_sentinel);
  30 }
  31
  32 bool IsEULAAcceptanceFlagged(BrowserDistribution* dist) {
  33   // Chrome creates the EULA sentinel after the EULA has been accepted when
  34   // doing so is required by master_preferences. Assume the EULA has not been
  35   // accepted if the path to the sentinel cannot be determined.
  36   base::FilePath eula_sentinel;
  37   return InstallUtil::GetSentinelFilePath(kEULASentinelFile,
  38                                           dist,
  39                                           &eula_sentinel)
  40       && base::PathExists(eula_sentinel);
  41 }
  42
  43 scoped_ptr<MasterPreferences> GetMasterPrefs(const ProductState& prod_state) {
  44   // The standard location of the master prefs is next to the chrome binary.
  45   base::FilePath master_prefs_path(
  46       prod_state.GetSetupPath().DirName().DirName().DirName());
  47   scoped_ptr<MasterPreferences> install_prefs(new MasterPreferences(
  48       master_prefs_path.AppendASCII(kDefaultMasterPrefs)));
  49   if (install_prefs && install_prefs->read_from_file())
  50     return install_prefs.Pass();
  51
  52   return scoped_ptr<MasterPreferences>();
  53 }
  54
  55 // Attempts to initialize |state| with any Chrome-related product.
  56 // Returns true if any of these product are installed, otherwise false.
  57 bool GetAnyChromeProductState(bool system_level, ProductState* state) {
  58   return state->Initialize(system_level, BrowserDistribution::CHROME_BROWSER)
  59       || state->Initialize(system_level, BrowserDistribution::CHROME_FRAME)
  60       || state->Initialize(system_level, BrowserDistribution::CHROME_APP_HOST);
  61 }
  62
  63 }  // namespace
  64
  65 EULAAcceptanceResponse IsEULAAccepted(bool system_level) {
  66   ProductState prod_state;
  67
  68   if (!system_level) {  // User-level case has seprate flow.
  69     // Do not simply check Chrome binaries. Instead, check whether or not
  70     // any Chrome-related products is installed, because the presence of any of
  71     // these products at user-level implies that the EULA has been accepted.
  72     return GetAnyChromeProductState(false, &prod_state)
  73         ? QUERY_EULA_ACCEPTED : QUERY_EULA_NOT_ACCEPTED;
  74   }
  75
  76   // System-level. Try to use Chrome binaries product state.
  77   if (!prod_state.Initialize(true, BrowserDistribution::CHROME_BINARIES)) {
  78     // Fall back to Chrome Browser product state only.
  79     if (!prod_state.Initialize(true, BrowserDistribution::CHROME_BROWSER))
  80       return QUERY_EULA_FAIL;
  81
  82     LOG_IF(DFATAL, prod_state.is_multi_install())
  83         << "Binaries are not installed, but Chrome is multi-install.";
  84   }
  85   BrowserDistribution* dist = BrowserDistribution::GetSpecificDistribution(
  86       BrowserDistribution::CHROME_BROWSER);
  87
  88   // Is Google Update waiting for Chrome's EULA to be accepted?
  89   DWORD eula_accepted = 0;
  90   if (prod_state.GetEulaAccepted(&eula_accepted) && !eula_accepted)
  91     return QUERY_EULA_NOT_ACCEPTED;
  92
  93   if (!IsChromeFirstRunPending(dist) || IsEULAAcceptanceFlagged(dist))
  94     return QUERY_EULA_ACCEPTED;
  95
  96   // EULA acceptance not flagged. Now see if it is required.
  97   scoped_ptr<MasterPreferences> install_prefs(GetMasterPrefs(prod_state));
  98   // If we fail to get master preferences, assume that EULA is not required.
  99   if (!install_prefs)
 100     return QUERY_EULA_ACCEPTED;
 101
 102   bool eula_required = false;
 103   // If kRequireEula value is absent, assume EULA is not required.
 104   if (!install_prefs->GetBool(master_preferences::kRequireEula, &eula_required))
 105     return QUERY_EULA_ACCEPTED;
 106
 107   return eula_required ? QUERY_EULA_NOT_ACCEPTED : QUERY_EULA_ACCEPTED;
 108 }
 109
 110 }  // namespace installer