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2ace287d BM |
1 | /* crypto/rand/rand_win.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | /* ==================================================================== | |
59 | * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. | |
60 | * | |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
111 | ||
c0722725 UM |
112 | #include "cryptlib.h" |
113 | #include <openssl/rand.h> | |
114 | #include "rand_lcl.h" | |
2ace287d | 115 | |
7a8c7288 | 116 | #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) |
2ace287d | 117 | #include <windows.h> |
c0722725 UM |
118 | #ifndef _WIN32_WINNT |
119 | # define _WIN32_WINNT 0x0400 | |
2ace287d | 120 | #endif |
c0722725 UM |
121 | #include <wincrypt.h> |
122 | #include <tlhelp32.h> | |
123 | ||
7a8c7288 UM |
124 | /* Limit the time spent walking through the heap, processes, threads and modules to |
125 | a maximum of 1000 miliseconds each, unless CryptoGenRandom failed */ | |
126 | #define MAXDELAY 1000 | |
127 | ||
c0722725 UM |
128 | /* Intel hardware RNG CSP -- available from |
129 | * http://developer.intel.com/design/security/rng/redist_license.htm | |
130 | */ | |
131 | #define PROV_INTEL_SEC 22 | |
89c53672 | 132 | #define INTEL_DEF_PROV L"Intel Hardware Cryptographic Service Provider" |
c0722725 UM |
133 | |
134 | static void readtimer(void); | |
135 | static void readscreen(void); | |
136 | ||
7abee0ce RL |
137 | /* It appears like CURSORINFO, PCURSORINFO and LPCURSORINFO are only defined |
138 | when WINVER is 0x0500 and up, which currently only happens on Win2000. | |
139 | Unfortunately, those are typedefs, so they're a little bit difficult to | |
140 | detect properly. On the other hand, the macro CURSOR_SHOWING is defined | |
141 | within the same conditional, so it can be use to detect the absence of said | |
142 | typedefs. */ | |
143 | ||
c0366d89 | 144 | #ifndef CURSOR_SHOWING |
7abee0ce RL |
145 | /* |
146 | * Information about the global cursor. | |
147 | */ | |
148 | typedef struct tagCURSORINFO | |
149 | { | |
150 | DWORD cbSize; | |
151 | DWORD flags; | |
152 | HCURSOR hCursor; | |
153 | POINT ptScreenPos; | |
154 | } CURSORINFO, *PCURSORINFO, *LPCURSORINFO; | |
155 | ||
156 | #define CURSOR_SHOWING 0x00000001 | |
157 | #endif /* CURSOR_SHOWING */ | |
c0366d89 | 158 | |
0491e058 | 159 | #if !defined(OPENSSL_SYS_WINCE) |
89c53672 | 160 | typedef BOOL (WINAPI *CRYPTACQUIRECONTEXTW)(HCRYPTPROV *, LPCWSTR, LPCWSTR, |
c0722725 UM |
161 | DWORD, DWORD); |
162 | typedef BOOL (WINAPI *CRYPTGENRANDOM)(HCRYPTPROV, DWORD, BYTE *); | |
163 | typedef BOOL (WINAPI *CRYPTRELEASECONTEXT)(HCRYPTPROV, DWORD); | |
164 | ||
165 | typedef HWND (WINAPI *GETFOREGROUNDWINDOW)(VOID); | |
166 | typedef BOOL (WINAPI *GETCURSORINFO)(PCURSORINFO); | |
167 | typedef DWORD (WINAPI *GETQUEUESTATUS)(UINT); | |
168 | ||
169 | typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD); | |
88401ed4 | 170 | typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE); |
59947880 | 171 | typedef BOOL (WINAPI *HEAP32FIRST)(LPHEAPENTRY32, DWORD, SIZE_T); |
c0722725 UM |
172 | typedef BOOL (WINAPI *HEAP32NEXT)(LPHEAPENTRY32); |
173 | typedef BOOL (WINAPI *HEAP32LIST)(HANDLE, LPHEAPLIST32); | |
174 | typedef BOOL (WINAPI *PROCESS32)(HANDLE, LPPROCESSENTRY32); | |
175 | typedef BOOL (WINAPI *THREAD32)(HANDLE, LPTHREADENTRY32); | |
176 | typedef BOOL (WINAPI *MODULE32)(HANDLE, LPMODULEENTRY32); | |
177 | ||
1d95fb65 RL |
178 | #include <lmcons.h> |
179 | #include <lmstats.h> | |
10bb0dbf RL |
180 | #if 1 /* The NET API is Unicode only. It requires the use of the UNICODE |
181 | * macro. When UNICODE is defined LPTSTR becomes LPWSTR. LMSTR was | |
182 | * was added to the Platform SDK to allow the NET API to be used in | |
183 | * non-Unicode applications provided that Unicode strings were still | |
184 | * used for input. LMSTR is defined as LPWSTR. | |
676432d4 | 185 | */ |
1d95fb65 | 186 | typedef NET_API_STATUS (NET_API_FUNCTION * NETSTATGET) |
10bb0dbf | 187 | (LPWSTR, LPWSTR, DWORD, DWORD, LPBYTE*); |
1d95fb65 | 188 | typedef NET_API_STATUS (NET_API_FUNCTION * NETFREE)(LPBYTE); |
10bb0dbf | 189 | #endif /* 1 */ |
0491e058 | 190 | #endif /* !OPENSSL_SYS_WINCE */ |
1d95fb65 | 191 | |
c0722725 UM |
192 | int RAND_poll(void) |
193 | { | |
194 | MEMORYSTATUS m; | |
195 | HCRYPTPROV hProvider = 0; | |
c0722725 | 196 | DWORD w; |
7a8c7288 | 197 | int good = 0; |
c0722725 | 198 | |
10bb0dbf RL |
199 | /* Determine the OS version we are on so we can turn off things |
200 | * that do not work properly. | |
201 | */ | |
202 | OSVERSIONINFO osverinfo ; | |
203 | osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ; | |
204 | GetVersionEx( &osverinfo ) ; | |
c0722725 | 205 | |
8a35fb3b | 206 | #if defined(OPENSSL_SYS_WINCE) |
19bd66fe AP |
207 | # if defined(_WIN32_WCE) && _WIN32_WCE>=300 |
208 | /* Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available | |
209 | * in commonly available implementations prior 300... */ | |
0491e058 AP |
210 | { |
211 | BYTE buf[64]; | |
0bf23d9b RL |
212 | /* poll the CryptoAPI PRNG */ |
213 | /* The CryptoAPI returns sizeof(buf) bytes of randomness */ | |
0491e058 AP |
214 | if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, |
215 | CRYPT_VERIFYCONTEXT)) | |
0bf23d9b RL |
216 | { |
217 | if (CryptGenRandom(hProvider, sizeof(buf), buf)) | |
218 | RAND_add(buf, sizeof(buf), sizeof(buf)); | |
219 | CryptReleaseContext(hProvider, 0); | |
220 | } | |
0491e058 | 221 | } |
8a35fb3b AP |
222 | # endif |
223 | #else /* OPENSSL_SYS_WINCE */ | |
89c53672 AP |
224 | /* |
225 | * None of below libraries are present on Windows CE, which is | |
226 | * why we #ifndef the whole section. This also excuses us from | |
227 | * handling the GetProcAddress issue. The trouble is that in | |
228 | * real Win32 API GetProcAddress is available in ANSI flavor | |
229 | * only. In WinCE on the other hand GetProcAddress is a macro | |
230 | * most commonly defined as GetProcAddressW, which accepts | |
231 | * Unicode argument. If we were to call GetProcAddress under | |
232 | * WinCE, I'd recommend to either redefine GetProcAddress as | |
233 | * GetProcAddressA (there seem to be one in common CE spec) or | |
234 | * implement own shim routine, which would accept ANSI argument | |
235 | * and expand it to Unicode. | |
236 | */ | |
573969cd | 237 | { |
c0722725 | 238 | /* load functions dynamically - not available on all systems */ |
573969cd AP |
239 | HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL")); |
240 | HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL")); | |
241 | HMODULE user = NULL; | |
242 | HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL")); | |
243 | CRYPTACQUIRECONTEXTW acquire = NULL; | |
244 | CRYPTGENRANDOM gen = NULL; | |
245 | CRYPTRELEASECONTEXT release = NULL; | |
246 | NETSTATGET netstatget = NULL; | |
247 | NETFREE netfree = NULL; | |
0491e058 | 248 | BYTE buf[64]; |
573969cd | 249 | |
1d95fb65 RL |
250 | if (netapi) |
251 | { | |
89c53672 AP |
252 | netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet"); |
253 | netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree"); | |
1d95fb65 RL |
254 | } |
255 | ||
256 | if (netstatget && netfree) | |
257 | { | |
258 | LPBYTE outbuf; | |
10bb0dbf RL |
259 | /* NetStatisticsGet() is a Unicode only function |
260 | * STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0 | |
261 | * contains 17 fields. We treat each field as a source of | |
262 | * one byte of entropy. | |
263 | */ | |
264 | ||
1d95fb65 RL |
265 | if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0) |
266 | { | |
10bb0dbf | 267 | RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45); |
1d95fb65 RL |
268 | netfree(outbuf); |
269 | } | |
270 | if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0) | |
271 | { | |
10bb0dbf | 272 | RAND_add(outbuf, sizeof(STAT_SERVER_0), 17); |
1d95fb65 RL |
273 | netfree(outbuf); |
274 | } | |
275 | } | |
276 | ||
362f2b69 RL |
277 | if (netapi) |
278 | FreeLibrary(netapi); | |
89c53672 | 279 | |
10bb0dbf RL |
280 | /* It appears like this can cause an exception deep within ADVAPI32.DLL |
281 | * at random times on Windows 2000. Reported by Jeffrey Altman. | |
282 | * Only use it on NT. | |
283 | */ | |
cc85ec44 BM |
284 | /* Wolfgang Marczy <WMarczy@topcall.co.at> reports that |
285 | * the RegQueryValueEx call below can hang on NT4.0 (SP6). | |
286 | * So we don't use this at all for now. */ | |
287 | #if 0 | |
10bb0dbf RL |
288 | if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && |
289 | osverinfo.dwMajorVersion < 5) | |
1d95fb65 | 290 | { |
10bb0dbf RL |
291 | /* Read Performance Statistics from NT/2000 registry |
292 | * The size of the performance data can vary from call | |
293 | * to call so we must guess the size of the buffer to use | |
294 | * and increase its size if we get an ERROR_MORE_DATA | |
295 | * return instead of ERROR_SUCCESS. | |
296 | */ | |
297 | LONG rc=ERROR_MORE_DATA; | |
298 | char * buf=NULL; | |
299 | DWORD bufsz=0; | |
300 | DWORD length; | |
301 | ||
302 | while (rc == ERROR_MORE_DATA) | |
303 | { | |
304 | buf = realloc(buf,bufsz+8192); | |
305 | if (!buf) | |
306 | break; | |
307 | bufsz += 8192; | |
308 | ||
309 | length = bufsz; | |
0bf23d9b | 310 | rc = RegQueryValueEx(HKEY_PERFORMANCE_DATA, TEXT("Global"), |
10bb0dbf RL |
311 | NULL, NULL, buf, &length); |
312 | } | |
313 | if (rc == ERROR_SUCCESS) | |
314 | { | |
315 | /* For entropy count assume only least significant | |
316 | * byte of each DWORD is random. | |
35a6db86 | 317 | */ |
10bb0dbf RL |
318 | RAND_add(&length, sizeof(length), 0); |
319 | RAND_add(buf, length, length / 4.0); | |
35a6db86 RL |
320 | |
321 | /* Close the Registry Key to allow Windows to cleanup/close | |
322 | * the open handle | |
323 | * Note: The 'HKEY_PERFORMANCE_DATA' key is implicitly opened | |
324 | * when the RegQueryValueEx above is done. However, if | |
325 | * it is not explicitly closed, it can cause disk | |
326 | * partition manipulation problems. | |
327 | */ | |
328 | RegCloseKey(HKEY_PERFORMANCE_DATA); | |
10bb0dbf RL |
329 | } |
330 | if (buf) | |
331 | free(buf); | |
1d95fb65 | 332 | } |
cc85ec44 | 333 | #endif |
c0722725 UM |
334 | |
335 | if (advapi) | |
336 | { | |
89c53672 AP |
337 | /* |
338 | * If it's available, then it's available in both ANSI | |
339 | * and UNICODE flavors even in Win9x, documentation says. | |
340 | * We favor Unicode... | |
341 | */ | |
342 | acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi, | |
343 | "CryptAcquireContextW"); | |
c0722725 | 344 | gen = (CRYPTGENRANDOM) GetProcAddress(advapi, |
89c53672 | 345 | "CryptGenRandom"); |
c0722725 | 346 | release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi, |
89c53672 | 347 | "CryptReleaseContext"); |
c0722725 UM |
348 | } |
349 | ||
350 | if (acquire && gen && release) | |
351 | { | |
352 | /* poll the CryptoAPI PRNG */ | |
10bb0dbf | 353 | /* The CryptoAPI returns sizeof(buf) bytes of randomness */ |
8a35fb3b | 354 | if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL, |
c0722725 UM |
355 | CRYPT_VERIFYCONTEXT)) |
356 | { | |
357 | if (gen(hProvider, sizeof(buf), buf) != 0) | |
358 | { | |
361c7f2b | 359 | RAND_add(buf, sizeof(buf), 0); |
7a8c7288 | 360 | good = 1; |
3e563bce | 361 | #if 0 |
c0722725 | 362 | printf("randomness from PROV_RSA_FULL\n"); |
2ace287d | 363 | #endif |
c0722725 UM |
364 | } |
365 | release(hProvider, 0); | |
366 | } | |
367 | ||
368 | /* poll the Pentium PRG with CryptoAPI */ | |
369 | if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0)) | |
370 | { | |
371 | if (gen(hProvider, sizeof(buf), buf) != 0) | |
372 | { | |
10bb0dbf | 373 | RAND_add(buf, sizeof(buf), sizeof(buf)); |
7a8c7288 | 374 | good = 1; |
3e563bce | 375 | #if 0 |
c0722725 UM |
376 | printf("randomness from PROV_INTEL_SEC\n"); |
377 | #endif | |
378 | } | |
379 | release(hProvider, 0); | |
380 | } | |
381 | } | |
382 | ||
362f2b69 RL |
383 | if (advapi) |
384 | FreeLibrary(advapi); | |
385 | ||
573969cd AP |
386 | if ((osverinfo.dwPlatformId != VER_PLATFORM_WIN32_NT || |
387 | !OPENSSL_isservice()) && | |
388 | (user = LoadLibrary(TEXT("USER32.DLL")))) | |
c0722725 UM |
389 | { |
390 | GETCURSORINFO cursor; | |
391 | GETFOREGROUNDWINDOW win; | |
848f3d40 | 392 | GETQUEUESTATUS queue; |
c0722725 | 393 | |
89c53672 AP |
394 | win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow"); |
395 | cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo"); | |
396 | queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus"); | |
c0722725 UM |
397 | |
398 | if (win) | |
10bb0dbf | 399 | { |
c0722725 | 400 | /* window handle */ |
573969cd | 401 | HWND h = win(); |
c0722725 | 402 | RAND_add(&h, sizeof(h), 0); |
10bb0dbf | 403 | } |
1d95fb65 RL |
404 | if (cursor) |
405 | { | |
406 | /* unfortunately, its not safe to call GetCursorInfo() | |
407 | * on NT4 even though it exists in SP3 (or SP6) and | |
408 | * higher. | |
409 | */ | |
1d95fb65 RL |
410 | if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && |
411 | osverinfo.dwMajorVersion < 5) | |
412 | cursor = 0; | |
413 | } | |
c0722725 UM |
414 | if (cursor) |
415 | { | |
416 | /* cursor position */ | |
10bb0dbf | 417 | /* assume 2 bytes of entropy */ |
1d95fb65 RL |
418 | CURSORINFO ci; |
419 | ci.cbSize = sizeof(CURSORINFO); | |
420 | if (cursor(&ci)) | |
10bb0dbf | 421 | RAND_add(&ci, ci.cbSize, 2); |
848f3d40 | 422 | } |
848f3d40 RL |
423 | |
424 | if (queue) | |
425 | { | |
426 | /* message queue status */ | |
10bb0dbf | 427 | /* assume 1 byte of entropy */ |
848f3d40 | 428 | w = queue(QS_ALLEVENTS); |
10bb0dbf | 429 | RAND_add(&w, sizeof(w), 1); |
c0722725 | 430 | } |
362f2b69 RL |
431 | |
432 | FreeLibrary(user); | |
c0722725 UM |
433 | } |
434 | ||
435 | /* Toolhelp32 snapshot: enumerate processes, threads, modules and heap | |
436 | * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm | |
1d95fb65 | 437 | * (Win 9x and 2000 only, not available on NT) |
c0722725 UM |
438 | * |
439 | * This seeding method was proposed in Peter Gutmann, Software | |
440 | * Generation of Practically Strong Random Numbers, | |
c0366d89 | 441 | * http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html |
88401ed4 | 442 | * revised version at http://www.cryptoengines.com/~peter/06_random.pdf |
c0722725 UM |
443 | * (The assignment of entropy estimates below is arbitrary, but based |
444 | * on Peter's analysis the full poll appears to be safe. Additional | |
445 | * interactive seeding is encouraged.) | |
446 | */ | |
447 | ||
448 | if (kernel) | |
449 | { | |
450 | CREATETOOLHELP32SNAPSHOT snap; | |
88401ed4 | 451 | CLOSETOOLHELP32SNAPSHOT close_snap; |
c0722725 UM |
452 | HANDLE handle; |
453 | ||
454 | HEAP32FIRST heap_first; | |
455 | HEAP32NEXT heap_next; | |
456 | HEAP32LIST heaplist_first, heaplist_next; | |
457 | PROCESS32 process_first, process_next; | |
458 | THREAD32 thread_first, thread_next; | |
459 | MODULE32 module_first, module_next; | |
460 | ||
461 | HEAPLIST32 hlist; | |
462 | HEAPENTRY32 hentry; | |
463 | PROCESSENTRY32 p; | |
464 | THREADENTRY32 t; | |
465 | MODULEENTRY32 m; | |
7a8c7288 | 466 | DWORD stoptime = 0; |
c0722725 UM |
467 | |
468 | snap = (CREATETOOLHELP32SNAPSHOT) | |
89c53672 | 469 | GetProcAddress(kernel, "CreateToolhelp32Snapshot"); |
88401ed4 | 470 | close_snap = (CLOSETOOLHELP32SNAPSHOT) |
89c53672 AP |
471 | GetProcAddress(kernel, "CloseToolhelp32Snapshot"); |
472 | heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First"); | |
473 | heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next"); | |
474 | heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst"); | |
475 | heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext"); | |
476 | process_first = (PROCESS32) GetProcAddress(kernel, "Process32First"); | |
477 | process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next"); | |
478 | thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First"); | |
479 | thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next"); | |
480 | module_first = (MODULE32) GetProcAddress(kernel, "Module32First"); | |
481 | module_next = (MODULE32) GetProcAddress(kernel, "Module32Next"); | |
c0722725 UM |
482 | |
483 | if (snap && heap_first && heap_next && heaplist_first && | |
484 | heaplist_next && process_first && process_next && | |
485 | thread_first && thread_next && module_first && | |
486 | module_next && (handle = snap(TH32CS_SNAPALL,0)) | |
88401ed4 | 487 | != INVALID_HANDLE_VALUE) |
c0722725 UM |
488 | { |
489 | /* heap list and heap walking */ | |
10bb0dbf RL |
490 | /* HEAPLIST32 contains 3 fields that will change with |
491 | * each entry. Consider each field a source of 1 byte | |
492 | * of entropy. | |
493 | * HEAPENTRY32 contains 5 fields that will change with | |
494 | * each entry. Consider each field a source of 1 byte | |
495 | * of entropy. | |
496 | */ | |
c0722725 | 497 | hlist.dwSize = sizeof(HEAPLIST32); |
7a8c7288 | 498 | if (good) stoptime = GetTickCount() + MAXDELAY; |
c0722725 UM |
499 | if (heaplist_first(handle, &hlist)) |
500 | do | |
501 | { | |
10bb0dbf | 502 | RAND_add(&hlist, hlist.dwSize, 3); |
c0722725 UM |
503 | hentry.dwSize = sizeof(HEAPENTRY32); |
504 | if (heap_first(&hentry, | |
505 | hlist.th32ProcessID, | |
506 | hlist.th32HeapID)) | |
c0366d89 | 507 | { |
9f6fe8db | 508 | int entrycnt = 80; |
c0722725 UM |
509 | do |
510 | RAND_add(&hentry, | |
10bb0dbf | 511 | hentry.dwSize, 5); |
c0366d89 RL |
512 | while (heap_next(&hentry) |
513 | && --entrycnt > 0); | |
514 | } | |
c0722725 | 515 | } while (heaplist_next(handle, |
7a8c7288 UM |
516 | &hlist) && GetTickCount() < stoptime); |
517 | ||
c0722725 | 518 | /* process walking */ |
10bb0dbf RL |
519 | /* PROCESSENTRY32 contains 9 fields that will change |
520 | * with each entry. Consider each field a source of | |
521 | * 1 byte of entropy. | |
522 | */ | |
c0722725 | 523 | p.dwSize = sizeof(PROCESSENTRY32); |
7a8c7288 UM |
524 | |
525 | if (good) stoptime = GetTickCount() + MAXDELAY; | |
c0722725 UM |
526 | if (process_first(handle, &p)) |
527 | do | |
10bb0dbf | 528 | RAND_add(&p, p.dwSize, 9); |
7a8c7288 | 529 | while (process_next(handle, &p) && GetTickCount() < stoptime); |
10bb0dbf | 530 | |
c0722725 | 531 | /* thread walking */ |
10bb0dbf RL |
532 | /* THREADENTRY32 contains 6 fields that will change |
533 | * with each entry. Consider each field a source of | |
534 | * 1 byte of entropy. | |
535 | */ | |
c0722725 | 536 | t.dwSize = sizeof(THREADENTRY32); |
7a8c7288 | 537 | if (good) stoptime = GetTickCount() + MAXDELAY; |
c0722725 UM |
538 | if (thread_first(handle, &t)) |
539 | do | |
10bb0dbf | 540 | RAND_add(&t, t.dwSize, 6); |
7a8c7288 | 541 | while (thread_next(handle, &t) && GetTickCount() < stoptime); |
10bb0dbf | 542 | |
c0722725 | 543 | /* module walking */ |
10bb0dbf RL |
544 | /* MODULEENTRY32 contains 9 fields that will change |
545 | * with each entry. Consider each field a source of | |
546 | * 1 byte of entropy. | |
547 | */ | |
c0722725 | 548 | m.dwSize = sizeof(MODULEENTRY32); |
7a8c7288 | 549 | if (good) stoptime = GetTickCount() + MAXDELAY; |
c0722725 UM |
550 | if (module_first(handle, &m)) |
551 | do | |
10bb0dbf | 552 | RAND_add(&m, m.dwSize, 9); |
f68854b4 DSH |
553 | while (module_next(handle, &m) |
554 | && (GetTickCount() < stoptime)); | |
88401ed4 RL |
555 | if (close_snap) |
556 | close_snap(handle); | |
557 | else | |
558 | CloseHandle(handle); | |
7a8c7288 | 559 | |
c0722725 | 560 | } |
362f2b69 RL |
561 | |
562 | FreeLibrary(kernel); | |
c0722725 | 563 | } |
573969cd | 564 | } |
89c53672 AP |
565 | #endif /* !OPENSSL_SYS_WINCE */ |
566 | ||
567 | /* timer data */ | |
568 | readtimer(); | |
569 | ||
570 | /* memory usage statistics */ | |
571 | GlobalMemoryStatus(&m); | |
572 | RAND_add(&m, sizeof(m), 1); | |
573 | ||
574 | /* process ID */ | |
575 | w = GetCurrentProcessId(); | |
576 | RAND_add(&w, sizeof(w), 1); | |
c0722725 | 577 | |
3e563bce | 578 | #if 0 |
c0722725 | 579 | printf("Exiting RAND_poll\n"); |
2ace287d BM |
580 | #endif |
581 | ||
c0722725 UM |
582 | return(1); |
583 | } | |
2ace287d BM |
584 | |
585 | int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam) | |
586 | { | |
587 | double add_entropy=0; | |
2ace287d BM |
588 | |
589 | switch (iMsg) | |
590 | { | |
591 | case WM_KEYDOWN: | |
592 | { | |
593 | static WPARAM key; | |
594 | if (key != wParam) | |
595 | add_entropy = 0.05; | |
596 | key = wParam; | |
597 | } | |
598 | break; | |
599 | case WM_MOUSEMOVE: | |
600 | { | |
601 | static int lastx,lasty,lastdx,lastdy; | |
602 | int x,y,dx,dy; | |
603 | ||
604 | x=LOWORD(lParam); | |
605 | y=HIWORD(lParam); | |
606 | dx=lastx-x; | |
607 | dy=lasty-y; | |
608 | if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0) | |
609 | add_entropy=.2; | |
610 | lastx=x, lasty=y; | |
611 | lastdx=dx, lastdy=dy; | |
612 | } | |
613 | break; | |
614 | } | |
615 | ||
c0722725 | 616 | readtimer(); |
2ace287d BM |
617 | RAND_add(&iMsg, sizeof(iMsg), add_entropy); |
618 | RAND_add(&wParam, sizeof(wParam), 0); | |
619 | RAND_add(&lParam, sizeof(lParam), 0); | |
c0722725 | 620 | |
2ace287d BM |
621 | return (RAND_status()); |
622 | } | |
623 | ||
624 | ||
c0722725 UM |
625 | void RAND_screen(void) /* function available for backward compatibility */ |
626 | { | |
627 | RAND_poll(); | |
573969cd | 628 | readscreen(); |
c0722725 UM |
629 | } |
630 | ||
631 | ||
632 | /* feed timing information to the PRNG */ | |
633 | static void readtimer(void) | |
634 | { | |
159cf04e | 635 | DWORD w; |
c0722725 UM |
636 | LARGE_INTEGER l; |
637 | static int have_perfc = 1; | |
89c53672 | 638 | #if defined(_MSC_VER) && defined(_M_X86) |
c0722725 | 639 | static int have_tsc = 1; |
159cf04e | 640 | DWORD cyclecount; |
c0722725 UM |
641 | |
642 | if (have_tsc) { | |
643 | __try { | |
644 | __asm { | |
429cf462 | 645 | _emit 0x0f |
40e15f9d | 646 | _emit 0x31 |
c0722725 UM |
647 | mov cyclecount, eax |
648 | } | |
649 | RAND_add(&cyclecount, sizeof(cyclecount), 1); | |
650 | } __except(EXCEPTION_EXECUTE_HANDLER) { | |
651 | have_tsc = 0; | |
652 | } | |
653 | } | |
654 | #else | |
655 | # define have_tsc 0 | |
656 | #endif | |
657 | ||
658 | if (have_perfc) { | |
659 | if (QueryPerformanceCounter(&l) == 0) | |
660 | have_perfc = 0; | |
661 | else | |
662 | RAND_add(&l, sizeof(l), 0); | |
663 | } | |
664 | ||
665 | if (!have_tsc && !have_perfc) { | |
666 | w = GetTickCount(); | |
667 | RAND_add(&w, sizeof(w), 0); | |
668 | } | |
669 | } | |
670 | ||
671 | /* feed screen contents to PRNG */ | |
2ace287d | 672 | /***************************************************************************** |
2ace287d BM |
673 | * |
674 | * Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V. | |
675 | * | |
676 | * Code adapted from | |
c0017a5a | 677 | * <URL:http://support.microsoft.com/default.aspx?scid=kb;[LN];97193>; |
2ace287d BM |
678 | * the original copyright message is: |
679 | * | |
680 | * (C) Copyright Microsoft Corp. 1993. All rights reserved. | |
681 | * | |
682 | * You have a royalty-free right to use, modify, reproduce and | |
683 | * distribute the Sample Files (and/or any modified version) in | |
684 | * any way you find useful, provided that you agree that | |
685 | * Microsoft has no warranty obligations or liability for any | |
686 | * Sample Application Files which are modified. | |
687 | */ | |
c0722725 UM |
688 | |
689 | static void readscreen(void) | |
2ace287d | 690 | { |
130db968 | 691 | #if !defined(OPENSSL_SYS_WINCE) && !defined(OPENSSL_SYS_WIN32_CYGWIN) |
2ace287d BM |
692 | HDC hScrDC; /* screen DC */ |
693 | HDC hMemDC; /* memory DC */ | |
694 | HBITMAP hBitmap; /* handle for our bitmap */ | |
695 | HBITMAP hOldBitmap; /* handle for previous bitmap */ | |
696 | BITMAP bm; /* bitmap properties */ | |
697 | unsigned int size; /* size of bitmap */ | |
698 | char *bmbits; /* contents of bitmap */ | |
699 | int w; /* screen width */ | |
700 | int h; /* screen height */ | |
701 | int y; /* y-coordinate of screen lines to grab */ | |
702 | int n = 16; /* number of screen lines to grab at a time */ | |
703 | ||
573969cd AP |
704 | if (GetVersion() >= 0x80000000 || !OPENSSL_isservice()) |
705 | return; | |
706 | ||
2ace287d | 707 | /* Create a screen DC and a memory DC compatible to screen DC */ |
0bf23d9b | 708 | hScrDC = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL); |
2ace287d BM |
709 | hMemDC = CreateCompatibleDC(hScrDC); |
710 | ||
711 | /* Get screen resolution */ | |
712 | w = GetDeviceCaps(hScrDC, HORZRES); | |
713 | h = GetDeviceCaps(hScrDC, VERTRES); | |
714 | ||
715 | /* Create a bitmap compatible with the screen DC */ | |
716 | hBitmap = CreateCompatibleBitmap(hScrDC, w, n); | |
717 | ||
718 | /* Select new bitmap into memory DC */ | |
719 | hOldBitmap = SelectObject(hMemDC, hBitmap); | |
720 | ||
721 | /* Get bitmap properties */ | |
722 | GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm); | |
723 | size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes; | |
724 | ||
26a3a48d | 725 | bmbits = OPENSSL_malloc(size); |
2ace287d BM |
726 | if (bmbits) { |
727 | /* Now go through the whole screen, repeatedly grabbing n lines */ | |
728 | for (y = 0; y < h-n; y += n) | |
729 | { | |
730 | unsigned char md[MD_DIGEST_LENGTH]; | |
731 | ||
732 | /* Bitblt screen DC to memory DC */ | |
733 | BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY); | |
734 | ||
735 | /* Copy bitmap bits from memory DC to bmbits */ | |
736 | GetBitmapBits(hBitmap, size, bmbits); | |
737 | ||
c0722725 | 738 | /* Get the hash of the bitmap */ |
2ace287d BM |
739 | MD(bmbits,size,md); |
740 | ||
c0722725 UM |
741 | /* Seed the random generator with the hash value */ |
742 | RAND_add(md, MD_DIGEST_LENGTH, 0); | |
2ace287d BM |
743 | } |
744 | ||
26a3a48d | 745 | OPENSSL_free(bmbits); |
2ace287d BM |
746 | } |
747 | ||
748 | /* Select old bitmap back into memory DC */ | |
749 | hBitmap = SelectObject(hMemDC, hOldBitmap); | |
750 | ||
751 | /* Clean up */ | |
752 | DeleteObject(hBitmap); | |
753 | DeleteDC(hMemDC); | |
754 | DeleteDC(hScrDC); | |
0bf23d9b | 755 | #endif /* !OPENSSL_SYS_WINCE */ |
2ace287d BM |
756 | } |
757 | ||
2ace287d | 758 | #endif |