Check-in rlz code to src\rlz from http://code.google.com/p/rlz/.

rlz/win/lib/machine_deal.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Library functions related to the OEM Deal Confirmation Code.
+
+#ifndef RLZ_WIN_LIB_MACHINE_DEAL_H_
+#define RLZ_WIN_LIB_MACHINE_DEAL_H_
+
+#include <string>
+#include "rlz/win/lib/rlz_lib.h"
+
+namespace rlz_lib {
+
+class MachineDealCode {
+ public:
+  // Set the OEM Deal Confirmation Code (DCC). This information is used for RLZ
+  // initalization. Must have write access to HKLM - SYSTEM or admin, unless
+  // rlz_lib::CreateMachineState() has been successfully called.
+  static bool Set(const char* dcc);
+
+  // Get the OEM Deal Confirmation Code from the registry. Used to ping
+  // the server.
+  static bool Get(AccessPoint point,
+                  char* dcc,
+                  int dcc_size,
+                  const wchar_t* sid = NULL);
+
+  // Parses a ping response, checks if it is valid and sets the machine DCC
+  // from the response. The response should also contain the current value of
+  // the DCC to be considered valid.
+  // Write access to HKLM (system / admin) needed, unless
+  // rlz_lib::CreateMachineState() has been successfully called.
+  static bool SetFromPingResponse(const char* response);
+
+  // Gets the new DCC to set from a ping response. Returns true if the ping
+  // response is valid. Sets has_new_dcc true if there is a new DCC value.
+  static bool GetNewCodeFromPingResponse(const char* response,
+                                         bool* has_new_dcc,
+                                         char* new_dcc,
+                                         int new_dcc_size);
+
+  // Get the DCC cgi argument string to append to a daily or financial ping.
+  static bool GetAsCgi(char* cgi, int cgi_size);
+
+  // Get the machine code.
+  static bool Get(char* dcc, int dcc_size);
+
+ protected:
+  // Clear the DCC value. Only for testing purposes.
+  // Requires write access to HKLM, unless rlz_lib::CreateMachineState() has
+  // been successfully called.
+  static bool Clear();
+
+  MachineDealCode() {}
+  ~MachineDealCode() {}
+};
+
+}  // namespace rlz_lib
+
+#endif  // RLZ_WIN_LIB_MACHINE_DEAL_H_