chrome/installer/util/compat_checks.cc

   1 // Copyright (c) 2010 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/compat_checks.h"
   6
   7 #include "base/strings/string_number_conversions.h"
   8 #include "base/strings/string_split.h"
   9 #include "base/strings/string_util.h"
  10 #include "base/win/registry.h"
  11
  12 namespace {
  13
  14 // SEP stands for Symantec End Point Protection.
  15 std::wstring GetSEPVersion() {
  16   const wchar_t kProductKey[] =
  17       L"SOFTWARE\\Symantec\\Symantec Endpoint Protection\\SMC";
  18   // Versions before 11MR3 were always 32-bit, so check in the 32-bit hive.
  19   base::win::RegKey key(
  20       HKEY_LOCAL_MACHINE, kProductKey, KEY_READ | KEY_WOW64_32KEY);
  21   std::wstring version_str;
  22   key.ReadValue(L"ProductVersion", &version_str);
  23   return version_str;
  24 }
  25
  26 // The product version should be a string like "11.0.3001.2224". This function
  27 // returns as params the first 3 values. Return value is false if anything
  28 // does not fit the format.
  29 bool ParseSEPVersion(const base::string16& version,
  30                      int* v0, int* v1, int* v2) {
  31   std::vector<base::StringPiece16> v = base::SplitStringPiece(
  32       version, L".", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
  33   if (v.size() != 4)
  34     return false;
  35   if (!base::StringToInt(v[0], v0))
  36     return false;
  37   if (!base::StringToInt(v[1], v1))
  38     return false;
  39   if (!base::StringToInt(v[2], v2))
  40     return false;
  41   return true;
  42 }
  43
  44 // The incompatible versions are anything before 11MR3, which is 11.0.3001.
  45 bool IsBadSEPVersion(int v0, int v1, int v2) {
  46   if (v0 < 11)
  47     return true;
  48   if (v1 > 0)
  49     return false;
  50   if (v2 < 3001)
  51     return true;
  52   return false;
  53 }
  54
  55 }  // namespace
  56
  57 bool HasIncompatibleSymantecEndpointVersion(const wchar_t* version) {
  58   int v0, v1, v2;
  59   std::wstring ver_str(version ? version : GetSEPVersion());
  60   if (!ParseSEPVersion(ver_str, &v0, &v1, &v2))
  61     return false;
  62   return IsBadSEPVersion(v0, v1, v2);
  63 }