chrome/browser/signin/local_auth_unittest.cc

   1 // Copyright 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/browser/signin/local_auth.h"
   6
   7 #include "base/base64.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "chrome/browser/profiles/profile_manager.h"
  10 #include "chrome/test/base/testing_browser_process.h"
  11 #include "chrome/test/base/testing_pref_service_syncable.h"
  12 #include "chrome/test/base/testing_profile.h"
  13 #include "chrome/test/base/testing_profile_manager.h"
  14 #include "components/os_crypt/os_crypt.h"
  15
  16 #include "testing/gtest/include/gtest/gtest.h"
  17
  18 TEST(LocalAuthTest, SetAndCheckCredentials) {
  19   TestingProfileManager testing_profile_manager(
  20       TestingBrowserProcess::GetGlobal());
  21   ASSERT_TRUE(testing_profile_manager.SetUp());
  22   Profile* prof = testing_profile_manager.CreateTestingProfile("p1");
  23   ProfileInfoCache& cache =
  24       testing_profile_manager.profile_manager()->GetProfileInfoCache();
  25   EXPECT_EQ(1U, cache.GetNumberOfProfiles());
  26   EXPECT_EQ("", cache.GetLocalAuthCredentialsOfProfileAtIndex(0));
  27
  28 #if defined(OS_MACOSX)
  29   OSCrypt::UseMockKeychain(true);
  30 #endif
  31
  32   std::string password("Some Password");
  33   EXPECT_FALSE(LocalAuth::ValidateLocalAuthCredentials(prof, password));
  34
  35   LocalAuth::SetLocalAuthCredentials(prof, password);
  36   std::string passhash = cache.GetLocalAuthCredentialsOfProfileAtIndex(0);
  37
  38   // We perform basic validation on the written record to ensure bugs don't slip
  39   // in that cannot be seen from the API:
  40   //  - The encoding exists (we can guarantee future backward compatibility).
  41   //  - The plaintext version of the password is not mistakenly stored anywhere.
  42   EXPECT_FALSE(passhash.empty());
  43   EXPECT_EQ('2', passhash[0]);
  44   EXPECT_EQ(passhash.find(password), std::string::npos);
  45
  46   std::string decodedhash;
  47   base::Base64Decode(passhash.substr(1), &decodedhash);
  48   EXPECT_FALSE(decodedhash.empty());
  49   EXPECT_EQ(decodedhash.find(password), std::string::npos);
  50
  51   EXPECT_TRUE(LocalAuth::ValidateLocalAuthCredentials(prof, password));
  52   EXPECT_FALSE(LocalAuth::ValidateLocalAuthCredentials(prof, password + "1"));
  53
  54   LocalAuth::SetLocalAuthCredentials(prof, password);  // makes different salt
  55   EXPECT_NE(passhash, cache.GetLocalAuthCredentialsOfProfileAtIndex(0));
  56 }
  57
  58
  59 TEST(LocalAuthTest, SetUpgradeAndCheckCredentials) {
  60   TestingProfileManager testing_profile_manager(
  61       TestingBrowserProcess::GetGlobal());
  62   ASSERT_TRUE(testing_profile_manager.SetUp());
  63   Profile* prof = testing_profile_manager.CreateTestingProfile("p1");
  64   ProfileInfoCache& cache =
  65       testing_profile_manager.profile_manager()->GetProfileInfoCache();
  66
  67 #if defined(OS_MACOSX)
  68   OSCrypt::UseMockKeychain(true);
  69 #endif
  70
  71   std::string password("Some Password");
  72   size_t profile_index = cache.GetIndexOfProfileWithPath(prof->GetPath());
  73   LocalAuth::SetLocalAuthCredentialsWithEncoding(profile_index, password, '1');
  74
  75   // Ensure we indeed persisted the correct encoding.
  76   std::string oldpasshash = cache.GetLocalAuthCredentialsOfProfileAtIndex(
  77       profile_index);
  78   EXPECT_EQ('1', oldpasshash[0]);
  79
  80   // Validate, ensure we can validate against the old encoding.
  81   EXPECT_TRUE(LocalAuth::ValidateLocalAuthCredentials(prof, password));
  82
  83   // Ensure we updated the encoding.
  84   std::string newpasshash = cache.GetLocalAuthCredentialsOfProfileAtIndex(
  85       profile_index);
  86   EXPECT_EQ('2', newpasshash[0]);
  87   // Encoding '2' writes fewer bytes than encoding '1'.
  88   EXPECT_LE(newpasshash.length(), oldpasshash.length());
  89
  90   // Validate, ensure we validate against the new encoding.
  91   EXPECT_TRUE(LocalAuth::ValidateLocalAuthCredentials(prof, password));
  92 }
  93
  94 // Test truncation where each byte is left whole.
  95 TEST(LocalAuthTest, TruncateStringEvenly) {
  96   std::string two_chars = "A6";
  97   std::string three_chars = "A6C";
  98   EXPECT_EQ(two_chars, LocalAuth::TruncateStringByBits(two_chars, 16));
  99   EXPECT_EQ(two_chars, LocalAuth::TruncateStringByBits(three_chars, 16));
 100
 101   EXPECT_EQ(two_chars, LocalAuth::TruncateStringByBits(two_chars, 14));
 102   EXPECT_EQ(two_chars, LocalAuth::TruncateStringByBits(three_chars, 14));
 103 }
 104
 105 // Test truncation that affects the results within a byte.
 106 TEST(LocalAuthTest, TruncateStringUnevenly) {
 107   std::string two_chars = "Az";
 108   std::string three_chars = "AzC";
 109   // 'z' = 0x7A, ':' = 0x3A.
 110   std::string two_chars_truncated = "A:";
 111   EXPECT_EQ(two_chars_truncated,
 112       LocalAuth::TruncateStringByBits(two_chars, 14));
 113   EXPECT_EQ(two_chars_truncated,
 114       LocalAuth::TruncateStringByBits(three_chars, 14));
 115 }