From 1630219d906f592c9258bfe2a0e0c4923df35782 Mon Sep 17 00:00:00 2001 From: Cory Fields Date: Tue, 20 Jan 2015 19:23:25 -0500 Subject: [PATCH] openssl: abstract out OPENSSL_cleanse This makes it easier for us to replace it if desired, since it's now only in one spot. Also, it avoids the openssl include from allocators.h, which essentially forced openssl to be included from every compilation unit. --- src/Makefile.am | 2 ++ src/allocators.h | 10 +++++----- src/base58.cpp | 2 +- src/crypter.cpp | 4 ++-- src/crypter.h | 4 ++-- src/db.cpp | 2 -- src/qt/paymentrequestplus.cpp | 1 - src/qt/paymentrequestplus.h | 2 ++ src/qt/paymentserver.cpp | 1 - src/random.cpp | 6 +++--- src/streams.h | 1 + src/support/cleanse.cpp | 13 +++++++++++++ src/support/cleanse.h | 13 +++++++++++++ 13 files changed, 44 insertions(+), 17 deletions(-) create mode 100644 src/support/cleanse.cpp create mode 100644 src/support/cleanse.h diff --git a/src/Makefile.am b/src/Makefile.am index 009c3c519..7644f6b32 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -123,6 +123,7 @@ BITCOIN_CORE_H = \ script/standard.h \ serialize.h \ streams.h \ + support/cleanse.h \ sync.h \ threadsafety.h \ timedata.h \ @@ -268,6 +269,7 @@ libbitcoin_util_a_SOURCES = \ compat/strnlen.cpp \ random.cpp \ rpcprotocol.cpp \ + support/cleanse.cpp \ sync.cpp \ uint256.cpp \ util.cpp \ diff --git a/src/allocators.h b/src/allocators.h index 6a131c351..8ffe015b9 100644 --- a/src/allocators.h +++ b/src/allocators.h @@ -6,6 +6,8 @@ #ifndef BITCOIN_ALLOCATORS_H #define BITCOIN_ALLOCATORS_H +#include "support/cleanse.h" + #include #include #include @@ -14,8 +16,6 @@ #include #include -#include // for OPENSSL_cleanse() - /** * Thread-safe class to keep track of locked (ie, non-swappable) memory pages. * @@ -174,7 +174,7 @@ void LockObject(const T& t) template void UnlockObject(const T& t) { - OPENSSL_cleanse((void*)(&t), sizeof(T)); + memory_cleanse((void*)(&t), sizeof(T)); LockedPageManager::Instance().UnlockRange((void*)(&t), sizeof(T)); } @@ -217,7 +217,7 @@ struct secure_allocator : public std::allocator { void deallocate(T* p, std::size_t n) { if (p != NULL) { - OPENSSL_cleanse(p, sizeof(T) * n); + memory_cleanse(p, sizeof(T) * n); LockedPageManager::Instance().UnlockRange(p, sizeof(T) * n); } std::allocator::deallocate(p, n); @@ -254,7 +254,7 @@ struct zero_after_free_allocator : public std::allocator { void deallocate(T* p, std::size_t n) { if (p != NULL) - OPENSSL_cleanse(p, sizeof(T) * n); + memory_cleanse(p, sizeof(T) * n); std::allocator::deallocate(p, n); } }; diff --git a/src/base58.cpp b/src/base58.cpp index 980d3cbf4..c80918505 100644 --- a/src/base58.cpp +++ b/src/base58.cpp @@ -172,7 +172,7 @@ bool CBase58Data::SetString(const char* psz, unsigned int nVersionBytes) vchData.resize(vchTemp.size() - nVersionBytes); if (!vchData.empty()) memcpy(&vchData[0], &vchTemp[nVersionBytes], vchData.size()); - OPENSSL_cleanse(&vchTemp[0], vchData.size()); + memory_cleanse(&vchTemp[0], vchData.size()); return true; } diff --git a/src/crypter.cpp b/src/crypter.cpp index 75d84dbf1..c7f7e2167 100644 --- a/src/crypter.cpp +++ b/src/crypter.cpp @@ -26,8 +26,8 @@ bool CCrypter::SetKeyFromPassphrase(const SecureString& strKeyData, const std::v if (i != (int)WALLET_CRYPTO_KEY_SIZE) { - OPENSSL_cleanse(chKey, sizeof(chKey)); - OPENSSL_cleanse(chIV, sizeof(chIV)); + memory_cleanse(chKey, sizeof(chKey)); + memory_cleanse(chIV, sizeof(chIV)); return false; } diff --git a/src/crypter.h b/src/crypter.h index cbaf1562f..8a91498e2 100644 --- a/src/crypter.h +++ b/src/crypter.h @@ -82,8 +82,8 @@ public: void CleanKey() { - OPENSSL_cleanse(chKey, sizeof(chKey)); - OPENSSL_cleanse(chIV, sizeof(chIV)); + memory_cleanse(chKey, sizeof(chKey)); + memory_cleanse(chIV, sizeof(chIV)); fKeySet = false; } diff --git a/src/db.cpp b/src/db.cpp index a7f885135..3246e4b67 100644 --- a/src/db.cpp +++ b/src/db.cpp @@ -21,8 +21,6 @@ #include #include -#include - using namespace std; diff --git a/src/qt/paymentrequestplus.cpp b/src/qt/paymentrequestplus.cpp index 4c1e89802..b69461ad9 100644 --- a/src/qt/paymentrequestplus.cpp +++ b/src/qt/paymentrequestplus.cpp @@ -13,7 +13,6 @@ #include -#include #include #include diff --git a/src/qt/paymentrequestplus.h b/src/qt/paymentrequestplus.h index fbc3a0926..61f8a3415 100644 --- a/src/qt/paymentrequestplus.h +++ b/src/qt/paymentrequestplus.h @@ -9,6 +9,8 @@ #include "base58.h" +#include + #include #include #include diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp index 9aab944f6..96ceeb18a 100644 --- a/src/qt/paymentserver.cpp +++ b/src/qt/paymentserver.cpp @@ -16,7 +16,6 @@ #include -#include #include #include diff --git a/src/random.cpp b/src/random.cpp index 663456e96..ae25bee1b 100644 --- a/src/random.cpp +++ b/src/random.cpp @@ -5,6 +5,7 @@ #include "random.h" +#include "support/cleanse.h" #ifdef WIN32 #include "compat.h" // for Windows API #endif @@ -18,7 +19,6 @@ #include #endif -#include #include #include @@ -40,7 +40,7 @@ void RandAddSeed() // Seed with CPU performance counter int64_t nCounter = GetPerformanceCounter(); RAND_add(&nCounter, sizeof(nCounter), 1.5); - OPENSSL_cleanse((void*)&nCounter, sizeof(nCounter)); + memory_cleanse((void*)&nCounter, sizeof(nCounter)); } void RandAddSeedPerfmon() @@ -70,7 +70,7 @@ void RandAddSeedPerfmon() RegCloseKey(HKEY_PERFORMANCE_DATA); if (ret == ERROR_SUCCESS) { RAND_add(begin_ptr(vData), nSize, nSize / 100.0); - OPENSSL_cleanse(begin_ptr(vData), nSize); + memory_cleanse(begin_ptr(vData), nSize); LogPrint("rand", "%s: %lu bytes\n", __func__, nSize); } else { static bool warned = false; // Warn only once diff --git a/src/streams.h b/src/streams.h index bd8568b1a..9999c2341 100644 --- a/src/streams.h +++ b/src/streams.h @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include diff --git a/src/support/cleanse.cpp b/src/support/cleanse.cpp new file mode 100644 index 000000000..a2141b244 --- /dev/null +++ b/src/support/cleanse.cpp @@ -0,0 +1,13 @@ +// Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2015 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include "cleanse.h" + +#include + +void memory_cleanse(void *ptr, size_t len) +{ + OPENSSL_cleanse(ptr, len); +} diff --git a/src/support/cleanse.h b/src/support/cleanse.h new file mode 100644 index 000000000..3e02aa8fd --- /dev/null +++ b/src/support/cleanse.h @@ -0,0 +1,13 @@ +// Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2015 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_SUPPORT_CLEANSE_H +#define BITCOIN_SUPPORT_CLEANSE_H + +#include + +void memory_cleanse(void *ptr, size_t len); + +#endif // BITCOIN_SUPPORT_CLEANSE_H