* 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:
* 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
+ * 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
* 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
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
#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>
+# 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
+/*
+ * 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 TEXT("Intel Hardware Cryptographic Service Provider")
+# 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. */
+/*
+ * 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
+# ifndef CURSOR_SHOWING
/*
* Information about the global cursor.
*/
-typedef struct tagCURSORINFO
-{
- DWORD cbSize;
- DWORD flags;
+typedef struct tagCURSORINFO {
+ DWORD cbSize;
+ DWORD flags;
HCURSOR hCursor;
- POINT ptScreenPos;
+ POINT ptScreenPos;
} CURSORINFO, *PCURSORINFO, *LPCURSORINFO;
-#define CURSOR_SHOWING 0x00000001
-#endif /* CURSOR_SHOWING */
-
-typedef BOOL (WINAPI *CRYPTACQUIRECONTEXT)(HCRYPTPROV *, LPCTSTR, LPCTSTR,
- 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, DWORD);
-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>
-#ifndef OPENSSL_SYS_WINCE
-#include <lmstats.h>
-#endif
-#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 */
+# 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;
- BYTE buf[64];
- DWORD w;
- HWND h;
-
- HMODULE advapi, kernel, user, netapi;
- CRYPTACQUIRECONTEXT acquire = 0;
- CRYPTGENRANDOM gen = 0;
- CRYPTRELEASECONTEXT release = 0;
-#if 1 /* There was previously a problem with NETSTATGET. Currently, this
- * section is still experimental, but if all goes well, this conditional
- * will be removed
- */
- NETSTATGET netstatget = 0;
- NETFREE netfree = 0;
-#endif /* 1 */
-
- /* 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) && WCEPLATFORM!=MS_HPC_PRO
- /* poll the CryptoAPI PRNG */
- /* The CryptoAPI returns sizeof(buf) bytes of randomness */
- if (CryptAcquireContext(&hProvider, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
- {
- if (CryptGenRandom(hProvider, sizeof(buf), buf))
- RAND_add(buf, sizeof(buf), sizeof(buf));
- CryptReleaseContext(hProvider, 0);
- }
-#endif
-
- /* load functions dynamically - not available on all systems */
- advapi = LoadLibrary(TEXT("ADVAPI32.DLL"));
- kernel = LoadLibrary(TEXT("KERNEL32.DLL"));
- user = LoadLibrary(TEXT("USER32.DLL"));
- netapi = LoadLibrary(TEXT("NETAPI32.DLL"));
-
-#ifndef OPENSSL_SYS_WINCE
-#if 1 /* There was previously a problem with NETSTATGET. Currently, this
- * section is still experimental, but if all goes well, this conditional
- * will be removed
- */
- if (netapi)
- {
- netstatget = (NETSTATGET) GetProcAddress(netapi,TEXT("NetStatisticsGet"));
- netfree = (NETFREE) GetProcAddress(netapi,TEXT("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);
-#endif /* 1 */
-#endif /* !OPENSSL_SYS_WINCE */
-
-#ifndef OPENSSL_SYS_WINCE
- /* 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
-#endif /* !OPENSSL_SYS_WINCE */
-
- if (advapi)
- {
- acquire = (CRYPTACQUIRECONTEXT) GetProcAddress(advapi,
- TEXT("CryptAcquireContextA"));
- gen = (CRYPTGENRANDOM) GetProcAddress(advapi,
- TEXT("CryptGenRandom"));
- release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi,
- TEXT("CryptReleaseContext"));
- }
-
- if (acquire && gen && release)
- {
- /* poll the CryptoAPI PRNG */
- /* The CryptoAPI returns sizeof(buf) bytes of randomness */
- if (acquire(&hProvider, 0, 0, PROV_RSA_FULL,
- CRYPT_VERIFYCONTEXT))
- {
- if (gen(hProvider, sizeof(buf), buf) != 0)
- {
- RAND_add(buf, sizeof(buf), 0);
-#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));
-#if 0
- printf("randomness from PROV_INTEL_SEC\n");
-#endif
- }
- release(hProvider, 0);
- }
- }
+ MEMORYSTATUS m;
+ HCRYPTPROV hProvider = 0;
+ DWORD w;
+ int good = 0;
+
+# 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.
+ */
+
+ 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);
-
- /* 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 (user)
- {
- GETCURSORINFO cursor;
- GETFOREGROUNDWINDOW win;
- GETQUEUESTATUS queue;
-
- win = (GETFOREGROUNDWINDOW) GetProcAddress(user, TEXT("GetForegroundWindow"));
- cursor = (GETCURSORINFO) GetProcAddress(user, TEXT("GetCursorInfo"));
- queue = (GETQUEUESTATUS) GetProcAddress(user, TEXT("GetQueueStatus"));
-
- if (win)
- {
- /* window handle */
- 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;
-
- snap = (CREATETOOLHELP32SNAPSHOT)
- GetProcAddress(kernel, TEXT("CreateToolhelp32Snapshot"));
- close_snap = (CLOSETOOLHELP32SNAPSHOT)
- GetProcAddress(kernel, TEXT("CloseToolhelp32Snapshot"));
- heap_first = (HEAP32FIRST) GetProcAddress(kernel, TEXT("Heap32First"));
- heap_next = (HEAP32NEXT) GetProcAddress(kernel, TEXT("Heap32Next"));
- heaplist_first = (HEAP32LIST) GetProcAddress(kernel, TEXT("Heap32ListFirst"));
- heaplist_next = (HEAP32LIST) GetProcAddress(kernel, TEXT("Heap32ListNext"));
- process_first = (PROCESS32) GetProcAddress(kernel, TEXT("Process32First"));
- process_next = (PROCESS32) GetProcAddress(kernel, TEXT("Process32Next"));
- thread_first = (THREAD32) GetProcAddress(kernel, TEXT("Thread32First"));
- thread_next = (THREAD32) GetProcAddress(kernel, TEXT("Thread32Next"));
- module_first = (MODULE32) GetProcAddress(kernel, TEXT("Module32First"));
- module_next = (MODULE32) GetProcAddress(kernel, TEXT("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.
- */
- hlist.dwSize = sizeof(HEAPLIST32);
- 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));
-
- /* 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 (process_first(handle, &p))
- do
- RAND_add(&p, p.dwSize, 9);
- while (process_next(handle, &p));
-
- /* 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 (thread_first(handle, &t))
- do
- RAND_add(&t, t.dwSize, 6);
- while (thread_next(handle, &t));
-
- /* 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 (module_first(handle, &m))
- do
- RAND_add(&m, m.dwSize, 9);
- while (module_next(handle, &m));
- if (close_snap)
- close_snap(handle);
- else
- CloseHandle(handle);
- }
-
- FreeLibrary(kernel);
- }
-
-#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;
+ FreeLibrary(advapi);
+
+ if ((!check_winnt() ||
+ !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 (check_winnt() && !check_win_minplat(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);
+ }
}
- 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;
+ __except(EXCEPTION_EXECUTE_HANDLER) {
+ /*
+ * ignore access violations when walking the heap
+ * list
+ */
+ ex_cnt_limit--;
}
- break;
- }
-
- readtimer();
- RAND_add(&iMsg, sizeof(iMsg), add_entropy);
- RAND_add(&wParam, sizeof(wParam), 0);
- RAND_add(&lParam, sizeof(lParam), 0);
-
- return (RAND_status());
- }
-
+ } 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);
+}
-void RAND_screen(void) /* function available for backward compatibility */
+int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam)
{
- RAND_poll();
- readscreen();
+ 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(OPENSSL_SYS_WINCE)
- 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);
- }
+ 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 */
static void readscreen(void)
{
-#ifndef OPENSSL_SYS_WINCE
- 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 */
-
- /* 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 */
+# 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
projects / openssl.git / blobdiff