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170 lines
5.7 KiB
170 lines
5.7 KiB
![]()
4 years ago
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// dll.cpp - originally written and placed in the public domain by Wei Dai
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#define CRYPTOPP_MANUALLY_INSTANTIATE_TEMPLATES
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#define CRYPTOPP_DEFAULT_NO_DLL
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#include "dll.h"
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#include "config.h"
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#include "iterhash.h"
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#include "pkcspad.h"
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#include "emsa2.h"
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#if defined(CRYPTOPP_MSC_VERSION)
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// Cast from FARPROC to funcptr with args, http://stackoverflow.com/q/4192058/608639
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# pragma warning(disable: 4191)
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#endif
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#if defined(CRYPTOPP_EXPORTS) && defined(CRYPTOPP_WIN32_AVAILABLE)
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# include <windows.h>
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#endif
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#ifndef CRYPTOPP_IMPORTS
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NAMESPACE_BEGIN(CryptoPP)
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// Guarding based on DLL due to Clang, http://github.com/weidai11/cryptopp/issues/300
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#if defined(CRYPTOPP_IS_DLL)
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template<> const byte PKCS_DigestDecoration<SHA1>::decoration[] = {0x30,0x21,0x30,0x09,0x06,0x05,0x2B,0x0E,0x03,0x02,0x1A,0x05,0x00,0x04,0x14};
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template<> const unsigned int PKCS_DigestDecoration<SHA1>::length = sizeof(PKCS_DigestDecoration<SHA1>::decoration);
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template<> const byte PKCS_DigestDecoration<SHA224>::decoration[] = {0x30,0x2d,0x30,0x0d,0x06,0x09,0x60,0x86,0x48,0x01,0x65,0x03,0x04,0x02,0x04,0x05,0x00,0x04,0x1c};
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template<> const unsigned int PKCS_DigestDecoration<SHA224>::length = sizeof(PKCS_DigestDecoration<SHA224>::decoration);
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template<> const byte PKCS_DigestDecoration<SHA256>::decoration[] = {0x30,0x31,0x30,0x0d,0x06,0x09,0x60,0x86,0x48,0x01,0x65,0x03,0x04,0x02,0x01,0x05,0x00,0x04,0x20};
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template<> const unsigned int PKCS_DigestDecoration<SHA256>::length = sizeof(PKCS_DigestDecoration<SHA256>::decoration);
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template<> const byte PKCS_DigestDecoration<SHA384>::decoration[] = {0x30,0x41,0x30,0x0d,0x06,0x09,0x60,0x86,0x48,0x01,0x65,0x03,0x04,0x02,0x02,0x05,0x00,0x04,0x30};
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template<> const unsigned int PKCS_DigestDecoration<SHA384>::length = sizeof(PKCS_DigestDecoration<SHA384>::decoration);
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template<> const byte PKCS_DigestDecoration<SHA512>::decoration[] = {0x30,0x51,0x30,0x0d,0x06,0x09,0x60,0x86,0x48,0x01,0x65,0x03,0x04,0x02,0x03,0x05,0x00,0x04,0x40};
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template<> const unsigned int PKCS_DigestDecoration<SHA512>::length = sizeof(PKCS_DigestDecoration<SHA512>::decoration);
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// http://github.com/weidai11/cryptopp/issues/517. OIDs and encoded prefixes found at
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// http://www.ietf.org/archive/id/draft-jivsov-openpgp-sha3-01.txt
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template<> const byte PKCS_DigestDecoration<SHA3_256>::decoration[] = {0x30,0x31,0x30,0x0d, 0x06,0x09,0x60,0x86, 0x48,0x01,0x65,0x03, 0x04,0x02,0x08,0x05, 0x00,0x04,0x20};
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template<> const unsigned int PKCS_DigestDecoration<SHA3_256>::length = (unsigned int)sizeof(PKCS_DigestDecoration<SHA3_256>::decoration);
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template<> const byte PKCS_DigestDecoration<SHA3_384>::decoration[] = {0x30,0x41,0x30,0x0d, 0x06,0x09,0x60,0x86, 0x48,0x01,0x65,0x03, 0x04,0x02,0x09,0x05, 0x00,0x04,0x30};
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template<> const unsigned int PKCS_DigestDecoration<SHA3_384>::length = (unsigned int)sizeof(PKCS_DigestDecoration<SHA3_384>::decoration);
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template<> const byte PKCS_DigestDecoration<SHA3_512>::decoration[] = {0x30,0x51,0x30,0x0d, 0x06,0x09,0x60,0x86, 0x48,0x01,0x65,0x03, 0x04,0x02,0x0a,0x05, 0x00,0x04,0x40};
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template<> const unsigned int PKCS_DigestDecoration<SHA3_512>::length = (unsigned int)sizeof(PKCS_DigestDecoration<SHA3_512>::decoration);
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template<> const byte EMSA2HashId<SHA1>::id = 0x33;
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template<> const byte EMSA2HashId<SHA224>::id = 0x38;
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template<> const byte EMSA2HashId<SHA256>::id = 0x34;
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template<> const byte EMSA2HashId<SHA384>::id = 0x36;
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template<> const byte EMSA2HashId<SHA512>::id = 0x35;
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#endif // CRYPTOPP_IS_DLL
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NAMESPACE_END
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#endif
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#ifdef CRYPTOPP_EXPORTS
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USING_NAMESPACE(CryptoPP)
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using std::set_new_handler;
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static PNew s_pNew = NULLPTR;
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static PDelete s_pDelete = NULLPTR;
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static void * New (size_t size)
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{
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void *p;
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while ((p = malloc(size)) == NULLPTR)
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CallNewHandler();
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return p;
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}
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static void SetNewAndDeleteFunctionPointers()
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{
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void *p = NULLPTR;
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HMODULE hModule = NULLPTR;
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MEMORY_BASIC_INFORMATION mbi;
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while (true)
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{
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VirtualQuery(p, &mbi, sizeof(mbi));
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if (p >= (char *)mbi.BaseAddress + mbi.RegionSize)
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break;
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p = (char *)mbi.BaseAddress + mbi.RegionSize;
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if (!mbi.AllocationBase || mbi.AllocationBase == hModule)
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continue;
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hModule = HMODULE(mbi.AllocationBase);
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PGetNewAndDelete pGetNewAndDelete = (PGetNewAndDelete)GetProcAddress(hModule, "GetNewAndDeleteForCryptoPP");
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if (pGetNewAndDelete)
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{
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pGetNewAndDelete(s_pNew, s_pDelete);
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return;
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}
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PSetNewAndDelete pSetNewAndDelete = (PSetNewAndDelete)GetProcAddress(hModule, "SetNewAndDeleteFromCryptoPP");
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if (pSetNewAndDelete)
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{
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s_pNew = &New;
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s_pDelete = &free;
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pSetNewAndDelete(s_pNew, s_pDelete, &set_new_handler);
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return;
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}
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}
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// try getting these directly using mangled names of new and delete operators
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hModule = GetModuleHandle("msvcrtd");
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if (!hModule)
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hModule = GetModuleHandle("msvcrt");
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if (hModule)
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{
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// 32-bit versions
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s_pNew = (PNew)GetProcAddress(hModule, "??2@YAPAXI@Z");
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s_pDelete = (PDelete)GetProcAddress(hModule, "??3@YAXPAX@Z");
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if (s_pNew && s_pDelete)
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return;
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// 64-bit versions
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s_pNew = (PNew)GetProcAddress(hModule, "??2@YAPEAX_K@Z");
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s_pDelete = (PDelete)GetProcAddress(hModule, "??3@YAXPEAX@Z");
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if (s_pNew && s_pDelete)
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return;
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}
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OutputDebugStringA("Crypto++ DLL was not able to obtain new and delete function pointers.\n");
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throw 0;
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}
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// Cast from FARPROC to funcptr with args
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#pragma warning(default: 4191)
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void * operator new (size_t size)
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{
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if (!s_pNew)
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SetNewAndDeleteFunctionPointers();
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return s_pNew(size);
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}
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void operator delete (void * p)
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{
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s_pDelete(p);
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}
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void * operator new [] (size_t size)
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{
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return operator new (size);
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}
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void operator delete [] (void * p)
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{
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operator delete (p);
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}
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#endif // CRYPTOPP_EXPORTS
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