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      1 // Copyright (c) 2011 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/common/chrome_version_info.h"
      6 
      7 namespace chrome {
      8 
      9 // static
     10 std::string VersionInfo::GetVersionStringModifier() {
     11   char* env = getenv("CHROME_VERSION_EXTRA");
     12   if (!env)
     13     return std::string();
     14   std::string modifier(env);
     15 
     16 #if defined(GOOGLE_CHROME_BUILD)
     17   // Only ever return "", "unknown", "dev" or "beta" in a branded build.
     18   if (modifier == "unstable")  // linux version of "dev"
     19     modifier = "dev";
     20   if (modifier == "stable") {
     21     modifier = "";
     22   } else if ((modifier == "dev") || (modifier == "beta")) {
     23     // do nothing.
     24   } else {
     25     modifier = "unknown";
     26   }
     27 #endif
     28 
     29   return modifier;
     30 }
     31 
     32 // static
     33 VersionInfo::Channel VersionInfo::GetChannel() {
     34 #if defined(GOOGLE_CHROME_BUILD)
     35   std::string channel = GetVersionStringModifier();
     36   if (channel.empty()) {
     37     return CHANNEL_STABLE;
     38   } else if (channel == "beta") {
     39     return CHANNEL_BETA;
     40   } else if (channel == "dev") {
     41     return CHANNEL_DEV;
     42   } else if (channel == "canary") {
     43     return CHANNEL_CANARY;
     44   }
     45 #endif
     46 
     47   return CHANNEL_UNKNOWN;
     48 }
     49 
     50 }  // namespace chrome
     51