0f9bcf3319
Windows 8 SDKs complain that GetVersion() is deprecated.
We only use GetVersion like this:
(GetVersion() < 0x80000000)
which checks if the Windows version is NT based. Use a macro check_winnt()
which uses GetVersion() on older SDK versions and true otherwise.
(cherry picked from commit a4cc3c8041)
807 lines
26 KiB
C
807 lines
26 KiB
C
/* crypto/rand/rand_win.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* openssl-core@openssl.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
#include "cryptlib.h"
|
|
#include <openssl/rand.h>
|
|
#include "rand_lcl.h"
|
|
|
|
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
|
|
#include <windows.h>
|
|
#ifndef _WIN32_WINNT
|
|
# define _WIN32_WINNT 0x0400
|
|
#endif
|
|
#include <wincrypt.h>
|
|
#include <tlhelp32.h>
|
|
|
|
/* Limit the time spent walking through the heap, processes, threads and modules to
|
|
a maximum of 1000 miliseconds each, unless CryptoGenRandom failed */
|
|
#define MAXDELAY 1000
|
|
|
|
/* Intel hardware RNG CSP -- available from
|
|
* http://developer.intel.com/design/security/rng/redist_license.htm
|
|
*/
|
|
#define PROV_INTEL_SEC 22
|
|
#define INTEL_DEF_PROV L"Intel Hardware Cryptographic Service Provider"
|
|
|
|
static void readtimer(void);
|
|
static void readscreen(void);
|
|
|
|
/* It appears like CURSORINFO, PCURSORINFO and LPCURSORINFO are only defined
|
|
when WINVER is 0x0500 and up, which currently only happens on Win2000.
|
|
Unfortunately, those are typedefs, so they're a little bit difficult to
|
|
detect properly. On the other hand, the macro CURSOR_SHOWING is defined
|
|
within the same conditional, so it can be use to detect the absence of said
|
|
typedefs. */
|
|
|
|
#ifndef CURSOR_SHOWING
|
|
/*
|
|
* Information about the global cursor.
|
|
*/
|
|
typedef struct tagCURSORINFO
|
|
{
|
|
DWORD cbSize;
|
|
DWORD flags;
|
|
HCURSOR hCursor;
|
|
POINT ptScreenPos;
|
|
} CURSORINFO, *PCURSORINFO, *LPCURSORINFO;
|
|
|
|
#define CURSOR_SHOWING 0x00000001
|
|
#endif /* CURSOR_SHOWING */
|
|
|
|
#if !defined(OPENSSL_SYS_WINCE)
|
|
typedef BOOL (WINAPI *CRYPTACQUIRECONTEXTW)(HCRYPTPROV *, LPCWSTR, LPCWSTR,
|
|
DWORD, DWORD);
|
|
typedef BOOL (WINAPI *CRYPTGENRANDOM)(HCRYPTPROV, DWORD, BYTE *);
|
|
typedef BOOL (WINAPI *CRYPTRELEASECONTEXT)(HCRYPTPROV, DWORD);
|
|
|
|
typedef HWND (WINAPI *GETFOREGROUNDWINDOW)(VOID);
|
|
typedef BOOL (WINAPI *GETCURSORINFO)(PCURSORINFO);
|
|
typedef DWORD (WINAPI *GETQUEUESTATUS)(UINT);
|
|
|
|
typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
|
|
typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE);
|
|
typedef BOOL (WINAPI *HEAP32FIRST)(LPHEAPENTRY32, DWORD, size_t);
|
|
typedef BOOL (WINAPI *HEAP32NEXT)(LPHEAPENTRY32);
|
|
typedef BOOL (WINAPI *HEAP32LIST)(HANDLE, LPHEAPLIST32);
|
|
typedef BOOL (WINAPI *PROCESS32)(HANDLE, LPPROCESSENTRY32);
|
|
typedef BOOL (WINAPI *THREAD32)(HANDLE, LPTHREADENTRY32);
|
|
typedef BOOL (WINAPI *MODULE32)(HANDLE, LPMODULEENTRY32);
|
|
|
|
#include <lmcons.h>
|
|
#include <lmstats.h>
|
|
#if 1 /* The NET API is Unicode only. It requires the use of the UNICODE
|
|
* macro. When UNICODE is defined LPTSTR becomes LPWSTR. LMSTR was
|
|
* was added to the Platform SDK to allow the NET API to be used in
|
|
* non-Unicode applications provided that Unicode strings were still
|
|
* used for input. LMSTR is defined as LPWSTR.
|
|
*/
|
|
typedef NET_API_STATUS (NET_API_FUNCTION * NETSTATGET)
|
|
(LPWSTR, LPWSTR, DWORD, DWORD, LPBYTE*);
|
|
typedef NET_API_STATUS (NET_API_FUNCTION * NETFREE)(LPBYTE);
|
|
#endif /* 1 */
|
|
#endif /* !OPENSSL_SYS_WINCE */
|
|
|
|
int RAND_poll(void)
|
|
{
|
|
MEMORYSTATUS m;
|
|
HCRYPTPROV hProvider = 0;
|
|
DWORD w;
|
|
int good = 0;
|
|
|
|
/* Determine the OS version we are on so we can turn off things
|
|
* that do not work properly.
|
|
*/
|
|
OSVERSIONINFO osverinfo ;
|
|
osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ;
|
|
GetVersionEx( &osverinfo ) ;
|
|
|
|
#if defined(OPENSSL_SYS_WINCE)
|
|
# if defined(_WIN32_WCE) && _WIN32_WCE>=300
|
|
/* Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available
|
|
* in commonly available implementations prior 300... */
|
|
{
|
|
BYTE buf[64];
|
|
/* poll the CryptoAPI PRNG */
|
|
/* The CryptoAPI returns sizeof(buf) bytes of randomness */
|
|
if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL,
|
|
CRYPT_VERIFYCONTEXT))
|
|
{
|
|
if (CryptGenRandom(hProvider, sizeof(buf), buf))
|
|
RAND_add(buf, sizeof(buf), sizeof(buf));
|
|
CryptReleaseContext(hProvider, 0);
|
|
}
|
|
}
|
|
# endif
|
|
#else /* OPENSSL_SYS_WINCE */
|
|
/*
|
|
* None of below libraries are present on Windows CE, which is
|
|
* why we #ifndef the whole section. This also excuses us from
|
|
* handling the GetProcAddress issue. The trouble is that in
|
|
* real Win32 API GetProcAddress is available in ANSI flavor
|
|
* only. In WinCE on the other hand GetProcAddress is a macro
|
|
* most commonly defined as GetProcAddressW, which accepts
|
|
* Unicode argument. If we were to call GetProcAddress under
|
|
* WinCE, I'd recommend to either redefine GetProcAddress as
|
|
* GetProcAddressA (there seem to be one in common CE spec) or
|
|
* implement own shim routine, which would accept ANSI argument
|
|
* and expand it to Unicode.
|
|
*/
|
|
{
|
|
/* load functions dynamically - not available on all systems */
|
|
HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL"));
|
|
HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL"));
|
|
HMODULE user = NULL;
|
|
HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL"));
|
|
CRYPTACQUIRECONTEXTW acquire = NULL;
|
|
CRYPTGENRANDOM gen = NULL;
|
|
CRYPTRELEASECONTEXT release = NULL;
|
|
NETSTATGET netstatget = NULL;
|
|
NETFREE netfree = NULL;
|
|
BYTE buf[64];
|
|
|
|
if (netapi)
|
|
{
|
|
netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet");
|
|
netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree");
|
|
}
|
|
|
|
if (netstatget && netfree)
|
|
{
|
|
LPBYTE outbuf;
|
|
/* NetStatisticsGet() is a Unicode only function
|
|
* STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0
|
|
* contains 17 fields. We treat each field as a source of
|
|
* one byte of entropy.
|
|
*/
|
|
|
|
if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0)
|
|
{
|
|
RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45);
|
|
netfree(outbuf);
|
|
}
|
|
if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0)
|
|
{
|
|
RAND_add(outbuf, sizeof(STAT_SERVER_0), 17);
|
|
netfree(outbuf);
|
|
}
|
|
}
|
|
|
|
if (netapi)
|
|
FreeLibrary(netapi);
|
|
|
|
/* It appears like this can cause an exception deep within ADVAPI32.DLL
|
|
* at random times on Windows 2000. Reported by Jeffrey Altman.
|
|
* Only use it on NT.
|
|
*/
|
|
/* Wolfgang Marczy <WMarczy@topcall.co.at> reports that
|
|
* the RegQueryValueEx call below can hang on NT4.0 (SP6).
|
|
* So we don't use this at all for now. */
|
|
#if 0
|
|
if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT &&
|
|
osverinfo.dwMajorVersion < 5)
|
|
{
|
|
/* Read Performance Statistics from NT/2000 registry
|
|
* The size of the performance data can vary from call
|
|
* to call so we must guess the size of the buffer to use
|
|
* and increase its size if we get an ERROR_MORE_DATA
|
|
* return instead of ERROR_SUCCESS.
|
|
*/
|
|
LONG rc=ERROR_MORE_DATA;
|
|
char * buf=NULL;
|
|
DWORD bufsz=0;
|
|
DWORD length;
|
|
|
|
while (rc == ERROR_MORE_DATA)
|
|
{
|
|
buf = realloc(buf,bufsz+8192);
|
|
if (!buf)
|
|
break;
|
|
bufsz += 8192;
|
|
|
|
length = bufsz;
|
|
rc = RegQueryValueEx(HKEY_PERFORMANCE_DATA, TEXT("Global"),
|
|
NULL, NULL, buf, &length);
|
|
}
|
|
if (rc == ERROR_SUCCESS)
|
|
{
|
|
/* For entropy count assume only least significant
|
|
* byte of each DWORD is random.
|
|
*/
|
|
RAND_add(&length, sizeof(length), 0);
|
|
RAND_add(buf, length, length / 4.0);
|
|
|
|
/* Close the Registry Key to allow Windows to cleanup/close
|
|
* the open handle
|
|
* Note: The 'HKEY_PERFORMANCE_DATA' key is implicitly opened
|
|
* when the RegQueryValueEx above is done. However, if
|
|
* it is not explicitly closed, it can cause disk
|
|
* partition manipulation problems.
|
|
*/
|
|
RegCloseKey(HKEY_PERFORMANCE_DATA);
|
|
}
|
|
if (buf)
|
|
free(buf);
|
|
}
|
|
#endif
|
|
|
|
if (advapi)
|
|
{
|
|
/*
|
|
* If it's available, then it's available in both ANSI
|
|
* and UNICODE flavors even in Win9x, documentation says.
|
|
* We favor Unicode...
|
|
*/
|
|
acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi,
|
|
"CryptAcquireContextW");
|
|
gen = (CRYPTGENRANDOM) GetProcAddress(advapi,
|
|
"CryptGenRandom");
|
|
release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi,
|
|
"CryptReleaseContext");
|
|
}
|
|
|
|
if (acquire && gen && release)
|
|
{
|
|
/* poll the CryptoAPI PRNG */
|
|
/* The CryptoAPI returns sizeof(buf) bytes of randomness */
|
|
if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL,
|
|
CRYPT_VERIFYCONTEXT))
|
|
{
|
|
if (gen(hProvider, sizeof(buf), buf) != 0)
|
|
{
|
|
RAND_add(buf, sizeof(buf), 0);
|
|
good = 1;
|
|
#if 0
|
|
printf("randomness from PROV_RSA_FULL\n");
|
|
#endif
|
|
}
|
|
release(hProvider, 0);
|
|
}
|
|
|
|
/* poll the Pentium PRG with CryptoAPI */
|
|
if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0))
|
|
{
|
|
if (gen(hProvider, sizeof(buf), buf) != 0)
|
|
{
|
|
RAND_add(buf, sizeof(buf), sizeof(buf));
|
|
good = 1;
|
|
#if 0
|
|
printf("randomness from PROV_INTEL_SEC\n");
|
|
#endif
|
|
}
|
|
release(hProvider, 0);
|
|
}
|
|
}
|
|
|
|
if (advapi)
|
|
FreeLibrary(advapi);
|
|
|
|
if ((osverinfo.dwPlatformId != VER_PLATFORM_WIN32_NT ||
|
|
!OPENSSL_isservice()) &&
|
|
(user = LoadLibrary(TEXT("USER32.DLL"))))
|
|
{
|
|
GETCURSORINFO cursor;
|
|
GETFOREGROUNDWINDOW win;
|
|
GETQUEUESTATUS queue;
|
|
|
|
win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow");
|
|
cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo");
|
|
queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus");
|
|
|
|
if (win)
|
|
{
|
|
/* window handle */
|
|
HWND h = win();
|
|
RAND_add(&h, sizeof(h), 0);
|
|
}
|
|
if (cursor)
|
|
{
|
|
/* unfortunately, its not safe to call GetCursorInfo()
|
|
* on NT4 even though it exists in SP3 (or SP6) and
|
|
* higher.
|
|
*/
|
|
if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT &&
|
|
osverinfo.dwMajorVersion < 5)
|
|
cursor = 0;
|
|
}
|
|
if (cursor)
|
|
{
|
|
/* cursor position */
|
|
/* assume 2 bytes of entropy */
|
|
CURSORINFO ci;
|
|
ci.cbSize = sizeof(CURSORINFO);
|
|
if (cursor(&ci))
|
|
RAND_add(&ci, ci.cbSize, 2);
|
|
}
|
|
|
|
if (queue)
|
|
{
|
|
/* message queue status */
|
|
/* assume 1 byte of entropy */
|
|
w = queue(QS_ALLEVENTS);
|
|
RAND_add(&w, sizeof(w), 1);
|
|
}
|
|
|
|
FreeLibrary(user);
|
|
}
|
|
|
|
/* Toolhelp32 snapshot: enumerate processes, threads, modules and heap
|
|
* http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm
|
|
* (Win 9x and 2000 only, not available on NT)
|
|
*
|
|
* This seeding method was proposed in Peter Gutmann, Software
|
|
* Generation of Practically Strong Random Numbers,
|
|
* http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html
|
|
* revised version at http://www.cryptoengines.com/~peter/06_random.pdf
|
|
* (The assignment of entropy estimates below is arbitrary, but based
|
|
* on Peter's analysis the full poll appears to be safe. Additional
|
|
* interactive seeding is encouraged.)
|
|
*/
|
|
|
|
if (kernel)
|
|
{
|
|
CREATETOOLHELP32SNAPSHOT snap;
|
|
CLOSETOOLHELP32SNAPSHOT close_snap;
|
|
HANDLE handle;
|
|
|
|
HEAP32FIRST heap_first;
|
|
HEAP32NEXT heap_next;
|
|
HEAP32LIST heaplist_first, heaplist_next;
|
|
PROCESS32 process_first, process_next;
|
|
THREAD32 thread_first, thread_next;
|
|
MODULE32 module_first, module_next;
|
|
|
|
HEAPLIST32 hlist;
|
|
HEAPENTRY32 hentry;
|
|
PROCESSENTRY32 p;
|
|
THREADENTRY32 t;
|
|
MODULEENTRY32 m;
|
|
DWORD starttime = 0;
|
|
|
|
snap = (CREATETOOLHELP32SNAPSHOT)
|
|
GetProcAddress(kernel, "CreateToolhelp32Snapshot");
|
|
close_snap = (CLOSETOOLHELP32SNAPSHOT)
|
|
GetProcAddress(kernel, "CloseToolhelp32Snapshot");
|
|
heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First");
|
|
heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next");
|
|
heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst");
|
|
heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext");
|
|
process_first = (PROCESS32) GetProcAddress(kernel, "Process32First");
|
|
process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next");
|
|
thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First");
|
|
thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next");
|
|
module_first = (MODULE32) GetProcAddress(kernel, "Module32First");
|
|
module_next = (MODULE32) GetProcAddress(kernel, "Module32Next");
|
|
|
|
if (snap && heap_first && heap_next && heaplist_first &&
|
|
heaplist_next && process_first && process_next &&
|
|
thread_first && thread_next && module_first &&
|
|
module_next && (handle = snap(TH32CS_SNAPALL,0))
|
|
!= INVALID_HANDLE_VALUE)
|
|
{
|
|
/* heap list and heap walking */
|
|
/* HEAPLIST32 contains 3 fields that will change with
|
|
* each entry. Consider each field a source of 1 byte
|
|
* of entropy.
|
|
* HEAPENTRY32 contains 5 fields that will change with
|
|
* each entry. Consider each field a source of 1 byte
|
|
* of entropy.
|
|
*/
|
|
ZeroMemory(&hlist, sizeof(HEAPLIST32));
|
|
hlist.dwSize = sizeof(HEAPLIST32);
|
|
if (good) starttime = GetTickCount();
|
|
#ifdef _MSC_VER
|
|
if (heaplist_first(handle, &hlist))
|
|
{
|
|
/*
|
|
following discussion on dev ML, exception on WinCE (or other Win
|
|
platform) is theoretically of unknown origin; prevent infinite
|
|
loop here when this theoretical case occurs; otherwise cope with
|
|
the expected (MSDN documented) exception-throwing behaviour of
|
|
Heap32Next() on WinCE.
|
|
|
|
based on patch in original message by Tanguy Fautré (2009/03/02)
|
|
Subject: RAND_poll() and CreateToolhelp32Snapshot() stability
|
|
*/
|
|
int ex_cnt_limit = 42;
|
|
do
|
|
{
|
|
RAND_add(&hlist, hlist.dwSize, 3);
|
|
__try
|
|
{
|
|
ZeroMemory(&hentry, sizeof(HEAPENTRY32));
|
|
hentry.dwSize = sizeof(HEAPENTRY32);
|
|
if (heap_first(&hentry,
|
|
hlist.th32ProcessID,
|
|
hlist.th32HeapID))
|
|
{
|
|
int entrycnt = 80;
|
|
do
|
|
RAND_add(&hentry,
|
|
hentry.dwSize, 5);
|
|
while (heap_next(&hentry)
|
|
&& (!good || (GetTickCount()-starttime)<MAXDELAY)
|
|
&& --entrycnt > 0);
|
|
}
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
/* ignore access violations when walking the heap list */
|
|
ex_cnt_limit--;
|
|
}
|
|
} while (heaplist_next(handle, &hlist)
|
|
&& (!good || (GetTickCount()-starttime)<MAXDELAY)
|
|
&& ex_cnt_limit > 0);
|
|
}
|
|
|
|
#else
|
|
if (heaplist_first(handle, &hlist))
|
|
{
|
|
do
|
|
{
|
|
RAND_add(&hlist, hlist.dwSize, 3);
|
|
hentry.dwSize = sizeof(HEAPENTRY32);
|
|
if (heap_first(&hentry,
|
|
hlist.th32ProcessID,
|
|
hlist.th32HeapID))
|
|
{
|
|
int entrycnt = 80;
|
|
do
|
|
RAND_add(&hentry,
|
|
hentry.dwSize, 5);
|
|
while (heap_next(&hentry)
|
|
&& --entrycnt > 0);
|
|
}
|
|
} while (heaplist_next(handle, &hlist)
|
|
&& (!good || (GetTickCount()-starttime)<MAXDELAY));
|
|
}
|
|
#endif
|
|
|
|
/* process walking */
|
|
/* PROCESSENTRY32 contains 9 fields that will change
|
|
* with each entry. Consider each field a source of
|
|
* 1 byte of entropy.
|
|
*/
|
|
p.dwSize = sizeof(PROCESSENTRY32);
|
|
|
|
if (good) starttime = GetTickCount();
|
|
if (process_first(handle, &p))
|
|
do
|
|
RAND_add(&p, p.dwSize, 9);
|
|
while (process_next(handle, &p) && (!good || (GetTickCount()-starttime)<MAXDELAY));
|
|
|
|
/* thread walking */
|
|
/* THREADENTRY32 contains 6 fields that will change
|
|
* with each entry. Consider each field a source of
|
|
* 1 byte of entropy.
|
|
*/
|
|
t.dwSize = sizeof(THREADENTRY32);
|
|
if (good) starttime = GetTickCount();
|
|
if (thread_first(handle, &t))
|
|
do
|
|
RAND_add(&t, t.dwSize, 6);
|
|
while (thread_next(handle, &t) && (!good || (GetTickCount()-starttime)<MAXDELAY));
|
|
|
|
/* module walking */
|
|
/* MODULEENTRY32 contains 9 fields that will change
|
|
* with each entry. Consider each field a source of
|
|
* 1 byte of entropy.
|
|
*/
|
|
m.dwSize = sizeof(MODULEENTRY32);
|
|
if (good) starttime = GetTickCount();
|
|
if (module_first(handle, &m))
|
|
do
|
|
RAND_add(&m, m.dwSize, 9);
|
|
while (module_next(handle, &m)
|
|
&& (!good || (GetTickCount()-starttime)<MAXDELAY));
|
|
if (close_snap)
|
|
close_snap(handle);
|
|
else
|
|
CloseHandle(handle);
|
|
|
|
}
|
|
|
|
FreeLibrary(kernel);
|
|
}
|
|
}
|
|
#endif /* !OPENSSL_SYS_WINCE */
|
|
|
|
/* timer data */
|
|
readtimer();
|
|
|
|
/* memory usage statistics */
|
|
GlobalMemoryStatus(&m);
|
|
RAND_add(&m, sizeof(m), 1);
|
|
|
|
/* process ID */
|
|
w = GetCurrentProcessId();
|
|
RAND_add(&w, sizeof(w), 1);
|
|
|
|
#if 0
|
|
printf("Exiting RAND_poll\n");
|
|
#endif
|
|
|
|
return(1);
|
|
}
|
|
|
|
int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
double add_entropy=0;
|
|
|
|
switch (iMsg)
|
|
{
|
|
case WM_KEYDOWN:
|
|
{
|
|
static WPARAM key;
|
|
if (key != wParam)
|
|
add_entropy = 0.05;
|
|
key = wParam;
|
|
}
|
|
break;
|
|
case WM_MOUSEMOVE:
|
|
{
|
|
static int lastx,lasty,lastdx,lastdy;
|
|
int x,y,dx,dy;
|
|
|
|
x=LOWORD(lParam);
|
|
y=HIWORD(lParam);
|
|
dx=lastx-x;
|
|
dy=lasty-y;
|
|
if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0)
|
|
add_entropy=.2;
|
|
lastx=x, lasty=y;
|
|
lastdx=dx, lastdy=dy;
|
|
}
|
|
break;
|
|
}
|
|
|
|
readtimer();
|
|
RAND_add(&iMsg, sizeof(iMsg), add_entropy);
|
|
RAND_add(&wParam, sizeof(wParam), 0);
|
|
RAND_add(&lParam, sizeof(lParam), 0);
|
|
|
|
return (RAND_status());
|
|
}
|
|
|
|
|
|
void RAND_screen(void) /* function available for backward compatibility */
|
|
{
|
|
RAND_poll();
|
|
readscreen();
|
|
}
|
|
|
|
|
|
/* feed timing information to the PRNG */
|
|
static void readtimer(void)
|
|
{
|
|
DWORD w;
|
|
LARGE_INTEGER l;
|
|
static int have_perfc = 1;
|
|
#if defined(_MSC_VER) && defined(_M_X86)
|
|
static int have_tsc = 1;
|
|
DWORD cyclecount;
|
|
|
|
if (have_tsc) {
|
|
__try {
|
|
__asm {
|
|
_emit 0x0f
|
|
_emit 0x31
|
|
mov cyclecount, eax
|
|
}
|
|
RAND_add(&cyclecount, sizeof(cyclecount), 1);
|
|
} __except(EXCEPTION_EXECUTE_HANDLER) {
|
|
have_tsc = 0;
|
|
}
|
|
}
|
|
#else
|
|
# define have_tsc 0
|
|
#endif
|
|
|
|
if (have_perfc) {
|
|
if (QueryPerformanceCounter(&l) == 0)
|
|
have_perfc = 0;
|
|
else
|
|
RAND_add(&l, sizeof(l), 0);
|
|
}
|
|
|
|
if (!have_tsc && !have_perfc) {
|
|
w = GetTickCount();
|
|
RAND_add(&w, sizeof(w), 0);
|
|
}
|
|
}
|
|
|
|
/* feed screen contents to PRNG */
|
|
/*****************************************************************************
|
|
*
|
|
* Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V.
|
|
*
|
|
* Code adapted from
|
|
* <URL:http://support.microsoft.com/default.aspx?scid=kb;[LN];97193>;
|
|
* the original copyright message is:
|
|
*
|
|
* (C) Copyright Microsoft Corp. 1993. All rights reserved.
|
|
*
|
|
* You have a royalty-free right to use, modify, reproduce and
|
|
* distribute the Sample Files (and/or any modified version) in
|
|
* any way you find useful, provided that you agree that
|
|
* Microsoft has no warranty obligations or liability for any
|
|
* Sample Application Files which are modified.
|
|
*/
|
|
|
|
static void readscreen(void)
|
|
{
|
|
#if !defined(OPENSSL_SYS_WINCE) && !defined(OPENSSL_SYS_WIN32_CYGWIN)
|
|
HDC hScrDC; /* screen DC */
|
|
HDC hMemDC; /* memory DC */
|
|
HBITMAP hBitmap; /* handle for our bitmap */
|
|
HBITMAP hOldBitmap; /* handle for previous bitmap */
|
|
BITMAP bm; /* bitmap properties */
|
|
unsigned int size; /* size of bitmap */
|
|
char *bmbits; /* contents of bitmap */
|
|
int w; /* screen width */
|
|
int h; /* screen height */
|
|
int y; /* y-coordinate of screen lines to grab */
|
|
int n = 16; /* number of screen lines to grab at a time */
|
|
|
|
if (check_winnt() && OPENSSL_isservice()>0)
|
|
return;
|
|
|
|
/* Create a screen DC and a memory DC compatible to screen DC */
|
|
hScrDC = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL);
|
|
hMemDC = CreateCompatibleDC(hScrDC);
|
|
|
|
/* Get screen resolution */
|
|
w = GetDeviceCaps(hScrDC, HORZRES);
|
|
h = GetDeviceCaps(hScrDC, VERTRES);
|
|
|
|
/* Create a bitmap compatible with the screen DC */
|
|
hBitmap = CreateCompatibleBitmap(hScrDC, w, n);
|
|
|
|
/* Select new bitmap into memory DC */
|
|
hOldBitmap = SelectObject(hMemDC, hBitmap);
|
|
|
|
/* Get bitmap properties */
|
|
GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm);
|
|
size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes;
|
|
|
|
bmbits = OPENSSL_malloc(size);
|
|
if (bmbits) {
|
|
/* Now go through the whole screen, repeatedly grabbing n lines */
|
|
for (y = 0; y < h-n; y += n)
|
|
{
|
|
unsigned char md[MD_DIGEST_LENGTH];
|
|
|
|
/* Bitblt screen DC to memory DC */
|
|
BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY);
|
|
|
|
/* Copy bitmap bits from memory DC to bmbits */
|
|
GetBitmapBits(hBitmap, size, bmbits);
|
|
|
|
/* Get the hash of the bitmap */
|
|
MD(bmbits,size,md);
|
|
|
|
/* Seed the random generator with the hash value */
|
|
RAND_add(md, MD_DIGEST_LENGTH, 0);
|
|
}
|
|
|
|
OPENSSL_free(bmbits);
|
|
}
|
|
|
|
/* Select old bitmap back into memory DC */
|
|
hBitmap = SelectObject(hMemDC, hOldBitmap);
|
|
|
|
/* Clean up */
|
|
DeleteObject(hBitmap);
|
|
DeleteDC(hMemDC);
|
|
DeleteDC(hScrDC);
|
|
#endif /* !OPENSSL_SYS_WINCE */
|
|
}
|
|
|
|
#endif
|