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      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 std::wstring& version, int* v0, int* v1, int* v2) {
     30   std::vector<std::wstring> v;
     31   base::SplitString(version, L'.', &v);
     32   if (v.size() != 4)
     33     return false;
     34   if (!base::StringToInt(v[0], v0))
     35     return false;
     36   if (!base::StringToInt(v[1], v1))
     37     return false;
     38   if (!base::StringToInt(v[2], v2))
     39     return false;
     40   return true;
     41 }
     42 
     43 // The incompatible versions are anything before 11MR3, which is 11.0.3001.
     44 bool IsBadSEPVersion(int v0, int v1, int v2) {
     45   if (v0 < 11)
     46     return true;
     47   if (v1 > 0)
     48     return false;
     49   if (v2 < 3001)
     50     return true;
     51   return false;
     52 }
     53 
     54 }  // namespace
     55 
     56 bool HasIncompatibleSymantecEndpointVersion(const wchar_t* version) {
     57   int v0, v1, v2;
     58   std::wstring ver_str(version ? version : GetSEPVersion());
     59   if (!ParseSEPVersion(ver_str, &v0, &v1, &v2))
     60     return false;
     61   return IsBadSEPVersion(v0, v1, v2);
     62 }
     63