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OTWindowsRegistryTools.cpp
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1 /************************************************************
2 *
3 * OTWindowsRegistryTools.cpp
4 *
5 */
6 
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10 
11  * OPEN TRANSACTIONS
12  *
13  * Financial Cryptography and Digital Cash
14  * Library, Protocol, API, Server, CLI, GUI
15  *
16  * -- Anonymous Numbered Accounts.
17  * -- Untraceable Digital Cash.
18  * -- Triple-Signed Receipts.
19  * -- Cheques, Vouchers, Transfers, Inboxes.
20  * -- Basket Currencies, Markets, Payment Plans.
21  * -- Signed, XML, Ricardian-style Contracts.
22  * -- Scripted smart contracts.
23  *
24  * Copyright (C) 2010-2013 by "Fellow Traveler" (A pseudonym)
25  *
26  * EMAIL:
28  *
29  * BITCOIN: 1NtTPVVjDsUfDWybS4BwvHpG2pdS9RnYyQ
30  *
31  * KEY FINGERPRINT (PGP Key in license file):
32  * 9DD5 90EB 9292 4B48 0484 7910 0308 00ED F951 BB8E
33  *
34  * OFFICIAL PROJECT WIKI(s):
35  * https://github.com/FellowTraveler/Moneychanger
36  * https://github.com/FellowTraveler/Open-Transactions/wiki
37  *
38  * WEBSITE:
39  * http://www.OpenTransactions.org/
40  *
41  * Components and licensing:
42  * -- Moneychanger..A Java client GUI.....LICENSE:.....GPLv3
43  * -- otlib.........A class library.......LICENSE:...LAGPLv3
44  * -- otapi.........A client API..........LICENSE:...LAGPLv3
45  * -- opentxs/ot....Command-line client...LICENSE:...LAGPLv3
46  * -- otserver......Server Application....LICENSE:....AGPLv3
47  * Github.com/FellowTraveler/Open-Transactions/wiki/Components
48  *
49  * All of the above OT components were designed and written by
50  * Fellow Traveler, with the exception of Moneychanger, which
51  * was contracted out to Vicky C ([email protected]).
52  * The open-source community has since actively contributed.
53  *
54  * -----------------------------------------------------
55  *
56  * LICENSE:
57  * This program is free software: you can redistribute it
58  * and/or modify it under the terms of the GNU Affero
59  * General Public License as published by the Free Software
60  * Foundation, either version 3 of the License, or (at your
61  * option) any later version.
62  *
63  * ADDITIONAL PERMISSION under the GNU Affero GPL version 3
64  * section 7: (This paragraph applies only to the LAGPLv3
65  * components listed above.) If you modify this Program, or
66  * any covered work, by linking or combining it with other
67  * code, such other code is not for that reason alone subject
68  * to any of the requirements of the GNU Affero GPL version 3.
69  * (==> This means if you are only using the OT API, then you
70  * don't have to open-source your code--only your changes to
71  * Open-Transactions itself must be open source. Similar to
72  * LGPLv3, except it applies to software-as-a-service, not
73  * just to distributing binaries.)
74  *
75  * Extra WAIVER for OpenSSL, Lucre, and all other libraries
76  * used by Open Transactions: This program is released under
77  * the AGPL with the additional exemption that compiling,
78  * linking, and/or using OpenSSL is allowed. The same is true
79  * for any other open source libraries included in this
80  * project: complete waiver from the AGPL is hereby granted to
81  * compile, link, and/or use them with Open-Transactions,
82  * according to their own terms, as long as the rest of the
83  * Open-Transactions terms remain respected, with regard to
84  * the Open-Transactions code itself.
85  *
86  * Lucre License:
87  * This code is also "dual-license", meaning that Ben Lau-
88  * rie's license must also be included and respected, since
89  * the code for Lucre is also included with Open Transactions.
90  * See Open-Transactions/src/otlib/lucre/LUCRE_LICENSE.txt
91  * The Laurie requirements are light, but if there is any
92  * problem with his license, simply remove the Lucre code.
93  * Although there are no other blind token algorithms in Open
94  * Transactions (yet. credlib is coming), the other functions
95  * will continue to operate.
96  * See Lucre on Github: https://github.com/benlaurie/lucre
97  * -----------------------------------------------------
98  * You should have received a copy of the GNU Affero General
99  * Public License along with this program. If not, see:
100  * http://www.gnu.org/licenses/
101  *
102  * If you would like to use this software outside of the free
103  * software license, please contact FellowTraveler.
104  * (Unfortunately many will run anonymously and untraceably,
105  * so who could really stop them?)
106  *
107  * DISCLAIMER:
108  * This program is distributed in the hope that it will be
109  * useful, but WITHOUT ANY WARRANTY; without even the implied
110  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
111  * PURPOSE. See the GNU Affero General Public License for
112  * more details.
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132 
133 #include "stdafx.hpp"
134 
135 #ifdef _WIN32
136 
138 
139 LONG WindowsRegistryTools::GetDWORDRegKey(HKEY hKey,
140  const std::wstring& strValueName,
141  DWORD& nValue, DWORD nDefaultValue)
142 {
143  nValue = nDefaultValue;
144  DWORD dwBufferSize(sizeof(DWORD));
145  DWORD nResult(0);
146  LONG nError =
147  ::RegQueryValueExW(hKey, strValueName.c_str(), 0, nullptr,
148  reinterpret_cast<LPBYTE>(&nResult), &dwBufferSize);
149  if (ERROR_SUCCESS == nError) {
150  nValue = nResult;
151  }
152  return nError;
153 }
154 
155 LONG WindowsRegistryTools::GetBoolRegKey(HKEY hKey,
156  const std::wstring& strValueName,
157  bool& bValue, bool bDefaultValue)
158 {
159  DWORD nDefValue((bDefaultValue) ? 1 : 0);
160  DWORD nResult(nDefValue);
161  LONG nError = GetDWORDRegKey(hKey, strValueName, nResult, nDefValue);
162  if (ERROR_SUCCESS == nError) {
163  bValue = (nResult != 0) ? true : false;
164  }
165  return nError;
166 }
167 
168 LONG WindowsRegistryTools::GetStringRegKey(HKEY hKey,
169  const std::wstring& strValueName,
170  std::wstring& strValue,
171  const std::wstring& strDefaultValue)
172 {
173  strValue = strDefaultValue;
174  WCHAR szBuffer[512];
175  DWORD dwBufferSize = sizeof(szBuffer);
176  ULONG nError;
177  nError = RegQueryValueExW(hKey, strValueName.c_str(), 0, nullptr,
178  (LPBYTE)szBuffer, &dwBufferSize);
179  if (ERROR_SUCCESS == nError) {
180  strValue = szBuffer;
181  }
182  return nError;
183 }
184 
185 #endif