Add a hardware_class attribute (for HWID, HWQual ID) to the Omaha request.

omaha_request_params.cc

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "update_engine/omaha_request_params.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/utsname.h>
 
 #include <map>
 #include <string>
 
+#include "base/file_util.h"
 #include "base/string_util.h"
 #include "update_engine/simple_key_value_store.h"
 #include "update_engine/utils.h"
 
 using std::map;
 using std::string;
 
 namespace chromeos_update_engine {
 
 const char* const OmahaRequestParams::kAppId(
     "{87efface-864d-49a5-9bb3-4b050a7c227a}");
 const char* const OmahaRequestParams::kOsPlatform("Chrome OS");
 const char* const OmahaRequestParams::kOsVersion("Indy");
 const char* const OmahaRequestParams::kUpdateUrl(
     "https://tools.google.com/service/update2");
 
+static const char kHWIDPath[] = "/sys/devices/platform/chromeos_acpi/HWID";
+
 bool OmahaRequestDeviceParams::Init(const std::string& in_app_version,
                                     const std::string& in_update_url) {
   os_platform = OmahaRequestParams::kOsPlatform;
   os_version = OmahaRequestParams::kOsVersion;
   app_version = in_app_version.empty() ?
       GetLsbValue("CHROMEOS_RELEASE_VERSION", "") : in_app_version;
   os_sp = app_version + "_" + GetMachineType();
   os_board = GetLsbValue("CHROMEOS_RELEASE_BOARD", "");
   app_id = OmahaRequestParams::kAppId;
   app_lang = "en-US";
   app_track = GetLsbValue("CHROMEOS_RELEASE_TRACK", "");
+  hardware_class = GetHardwareClass();
   struct stat stbuf;
 
   // Deltas are only okay if the /.nodelta file does not exist.
   // If we don't know (i.e. stat() returns some unexpected error),
   // then err on the side of caution and say deltas are not okay
   delta_okay = (stat((root_ + "/.nodelta").c_str(), &stbuf) < 0) &&
                (errno == ENOENT);
 
   update_url = in_update_url.empty() ?
       GetLsbValue("CHROMEOS_AUSERVER", OmahaRequestParams::kUpdateUrl) :
@@ skipping 21 matching lines @@
 }
 
 string OmahaRequestDeviceParams::GetMachineType() const {
   struct utsname buf;
   string ret;
   if (uname(&buf) == 0)
     ret = buf.machine;
   return ret;
 }
 
+string OmahaRequestDeviceParams::GetHardwareClass() const {
+  string hwid;
+  if (!file_util::ReadFileToString(FilePath(root_ + kHWIDPath), &hwid)) {
+    LOG(ERROR) << "Unable to determine the system hardware qualification ID.";
+    return "";
+  }
+  TrimWhitespaceASCII(hwid, TRIM_ALL, &hwid);
+  return hwid;
+}
+
 }  // namespace chromeos_update_engine