*
*/
+
+
#include "cryptlib.h"
#include <openssl/rand.h>
#include "rand_lcl.h"
#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 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 HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE);
-typedef BOOL (WINAPI *HEAP32FIRST)(LPHEAPENTRY32, DWORD, DWORD);
+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 *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
(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;
- CRYPTACQUIRECONTEXTW 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 */
+ int good = 0;
/* Determine the OS version we are on so we can turn off things
* that do not work properly.
osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ;
GetVersionEx( &osverinfo ) ;
-#if defined(OPENSSL_SYS_WINCE) && WCEPLATFORM!=MS_HPC_PRO
-#ifndef CryptAcquireContext
-#define CryptAcquireContext CryptAcquireContextW
-#endif
+#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 (CryptAcquireContext(&hProvider, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
+ 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
-
-#ifndef OPENSSL_SYS_WINCE
+ }
+# 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
* implement own shim routine, which would accept ANSI argument
* and expand it to Unicode.
*/
-
+ {
/* 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"));
-
-#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
- */
+ 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");
if (netapi)
FreeLibrary(netapi);
-#endif /* 1 */
/* It appears like this can cause an exception deep within ADVAPI32.DLL
* at random times on Windows 2000. Reported by Jeffrey Altman.
{
/* poll the CryptoAPI PRNG */
/* The CryptoAPI returns sizeof(buf) bytes of randomness */
- if (acquire(&hProvider, 0, 0, PROV_RSA_FULL,
+ 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
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
if (advapi)
FreeLibrary(advapi);
- if (user)
+ if ((osverinfo.dwPlatformId != VER_PLATFORM_WIN32_NT ||
+ !OPENSSL_isservice()) &&
+ (user = LoadLibrary(TEXT("USER32.DLL"))))
{
GETCURSORINFO cursor;
GETFOREGROUNDWINDOW win;
if (win)
{
/* window handle */
- h = win();
+ HWND h = win();
RAND_add(&h, sizeof(h), 0);
}
if (cursor)
PROCESSENTRY32 p;
THREADENTRY32 t;
MODULEENTRY32 m;
+ DWORD starttime = 0;
snap = (CREATETOOLHELP32SNAPSHOT)
GetProcAddress(kernel, "CreateToolhelp32Snapshot");
* 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);
while (heap_next(&hentry)
&& --entrycnt > 0);
}
- } while (heaplist_next(handle,
- &hlist));
-
+ } 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));
+ while (process_next(handle, &p) && (!good || (GetTickCount()-starttime)<MAXDELAY));
/* thread walking */
/* THREADENTRY32 contains 6 fields that will change
* 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));
+ while (thread_next(handle, &t) && (!good || (GetTickCount()-starttime)<MAXDELAY));
/* module walking */
/* MODULEENTRY32 contains 9 fields that will change
* 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));
+ 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 */
static void readscreen(void)
{
-#ifndef 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 h; /* screen height */
int y; /* y-coordinate of screen lines to grab */
int n = 16; /* number of screen lines to grab at a time */
+ BITMAPINFOHEADER bi; /* info about the bitmap */
+
+ 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 a reference to the screen DC */
+ hScrDC = GetDC(NULL);
/* Get screen resolution */
w = GetDeviceCaps(hScrDC, HORZRES);
/* 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;
+ bi.biSize = sizeof(BITMAPINFOHEADER);
+ bi.biWidth = bm.bmWidth;
+ bi.biHeight = bm.bmHeight;
+ bi.biPlanes = bm.bmPlanes;
+ bi.biBitCount = bm.bmBitsPixel;
+ bi.biCompression = BI_RGB;
+ bi.biSizeImage = 0;
+ bi.biXPelsPerMeter = 0;
+ bi.biYPelsPerMeter = 0;
+ bi.biClrUsed = 0;
+ bi.biClrImportant = 0;
+
bmbits = OPENSSL_malloc(size);
if (bmbits) {
/* Now go through the whole screen, repeatedly grabbing n lines */
{
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);
+ /* Copy the bits of the current line range into the buffer */
+ GetDIBits(hScrDC, hBitmap, y, n,
+ bmbits, (BITMAPINFO *)&bi, DIB_RGB_COLORS);
/* Get the hash of the bitmap */
MD(bmbits,size,md);
OPENSSL_free(bmbits);
}
- /* Select old bitmap back into memory DC */
- hBitmap = SelectObject(hMemDC, hOldBitmap);
-
/* Clean up */
DeleteObject(hBitmap);
- DeleteDC(hMemDC);
- DeleteDC(hScrDC);
+ ReleaseDC(NULL, hScrDC);
#endif /* !OPENSSL_SYS_WINCE */
}
projects / openssl.git / blobdiff