]>
Commit | Line | Data |
---|---|---|
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); |
b92c0df8 | 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 | |
c0722725 | 199 | |
8a35fb3b | 200 | #if defined(OPENSSL_SYS_WINCE) |
19bd66fe AP |
201 | # if defined(_WIN32_WCE) && _WIN32_WCE>=300 |
202 | /* Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available | |
203 | * in commonly available implementations prior 300... */ | |
0491e058 AP |
204 | { |
205 | BYTE buf[64]; | |
0bf23d9b RL |
206 | /* poll the CryptoAPI PRNG */ |
207 | /* The CryptoAPI returns sizeof(buf) bytes of randomness */ | |
0491e058 AP |
208 | if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, |
209 | CRYPT_VERIFYCONTEXT)) | |
0bf23d9b RL |
210 | { |
211 | if (CryptGenRandom(hProvider, sizeof(buf), buf)) | |
212 | RAND_add(buf, sizeof(buf), sizeof(buf)); | |
213 | CryptReleaseContext(hProvider, 0); | |
214 | } | |
0491e058 | 215 | } |
8a35fb3b AP |
216 | # endif |
217 | #else /* OPENSSL_SYS_WINCE */ | |
89c53672 AP |
218 | /* |
219 | * None of below libraries are present on Windows CE, which is | |
220 | * why we #ifndef the whole section. This also excuses us from | |
221 | * handling the GetProcAddress issue. The trouble is that in | |
222 | * real Win32 API GetProcAddress is available in ANSI flavor | |
223 | * only. In WinCE on the other hand GetProcAddress is a macro | |
224 | * most commonly defined as GetProcAddressW, which accepts | |
225 | * Unicode argument. If we were to call GetProcAddress under | |
226 | * WinCE, I'd recommend to either redefine GetProcAddress as | |
227 | * GetProcAddressA (there seem to be one in common CE spec) or | |
228 | * implement own shim routine, which would accept ANSI argument | |
229 | * and expand it to Unicode. | |
230 | */ | |
573969cd | 231 | { |
c0722725 | 232 | /* load functions dynamically - not available on all systems */ |
573969cd AP |
233 | HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL")); |
234 | HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL")); | |
235 | HMODULE user = NULL; | |
236 | HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL")); | |
237 | CRYPTACQUIRECONTEXTW acquire = NULL; | |
238 | CRYPTGENRANDOM gen = NULL; | |
239 | CRYPTRELEASECONTEXT release = NULL; | |
240 | NETSTATGET netstatget = NULL; | |
241 | NETFREE netfree = NULL; | |
0491e058 | 242 | BYTE buf[64]; |
573969cd | 243 | |
1d95fb65 RL |
244 | if (netapi) |
245 | { | |
89c53672 AP |
246 | netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet"); |
247 | netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree"); | |
1d95fb65 RL |
248 | } |
249 | ||
250 | if (netstatget && netfree) | |
251 | { | |
252 | LPBYTE outbuf; | |
10bb0dbf RL |
253 | /* NetStatisticsGet() is a Unicode only function |
254 | * STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0 | |
255 | * contains 17 fields. We treat each field as a source of | |
256 | * one byte of entropy. | |
257 | */ | |
258 | ||
1d95fb65 RL |
259 | if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0) |
260 | { | |
10bb0dbf | 261 | RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45); |
1d95fb65 RL |
262 | netfree(outbuf); |
263 | } | |
264 | if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0) | |
265 | { | |
10bb0dbf | 266 | RAND_add(outbuf, sizeof(STAT_SERVER_0), 17); |
1d95fb65 RL |
267 | netfree(outbuf); |
268 | } | |
269 | } | |
270 | ||
362f2b69 RL |
271 | if (netapi) |
272 | FreeLibrary(netapi); | |
89c53672 | 273 | |
10bb0dbf RL |
274 | /* It appears like this can cause an exception deep within ADVAPI32.DLL |
275 | * at random times on Windows 2000. Reported by Jeffrey Altman. | |
276 | * Only use it on NT. | |
277 | */ | |
c0722725 UM |
278 | |
279 | if (advapi) | |
280 | { | |
89c53672 AP |
281 | /* |
282 | * If it's available, then it's available in both ANSI | |
283 | * and UNICODE flavors even in Win9x, documentation says. | |
284 | * We favor Unicode... | |
285 | */ | |
286 | acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi, | |
287 | "CryptAcquireContextW"); | |
c0722725 | 288 | gen = (CRYPTGENRANDOM) GetProcAddress(advapi, |
89c53672 | 289 | "CryptGenRandom"); |
c0722725 | 290 | release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi, |
89c53672 | 291 | "CryptReleaseContext"); |
c0722725 UM |
292 | } |
293 | ||
294 | if (acquire && gen && release) | |
295 | { | |
296 | /* poll the CryptoAPI PRNG */ | |
10bb0dbf | 297 | /* The CryptoAPI returns sizeof(buf) bytes of randomness */ |
8a35fb3b | 298 | if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL, |
c0722725 UM |
299 | CRYPT_VERIFYCONTEXT)) |
300 | { | |
301 | if (gen(hProvider, sizeof(buf), buf) != 0) | |
302 | { | |
361c7f2b | 303 | RAND_add(buf, sizeof(buf), 0); |
7a8c7288 | 304 | good = 1; |
3e563bce | 305 | #if 0 |
c0722725 | 306 | printf("randomness from PROV_RSA_FULL\n"); |
2ace287d | 307 | #endif |
c0722725 UM |
308 | } |
309 | release(hProvider, 0); | |
310 | } | |
311 | ||
312 | /* poll the Pentium PRG with CryptoAPI */ | |
313 | if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0)) | |
314 | { | |
315 | if (gen(hProvider, sizeof(buf), buf) != 0) | |
316 | { | |
10bb0dbf | 317 | RAND_add(buf, sizeof(buf), sizeof(buf)); |
7a8c7288 | 318 | good = 1; |
3e563bce | 319 | #if 0 |
c0722725 UM |
320 | printf("randomness from PROV_INTEL_SEC\n"); |
321 | #endif | |
322 | } | |
323 | release(hProvider, 0); | |
324 | } | |
325 | } | |
326 | ||
362f2b69 RL |
327 | if (advapi) |
328 | FreeLibrary(advapi); | |
329 | ||
acb341eb | 330 | if ((!check_winnt() || |
573969cd AP |
331 | !OPENSSL_isservice()) && |
332 | (user = LoadLibrary(TEXT("USER32.DLL")))) | |
c0722725 UM |
333 | { |
334 | GETCURSORINFO cursor; | |
335 | GETFOREGROUNDWINDOW win; | |
848f3d40 | 336 | GETQUEUESTATUS queue; |
c0722725 | 337 | |
89c53672 AP |
338 | win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow"); |
339 | cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo"); | |
340 | queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus"); | |
c0722725 UM |
341 | |
342 | if (win) | |
10bb0dbf | 343 | { |
c0722725 | 344 | /* window handle */ |
573969cd | 345 | HWND h = win(); |
c0722725 | 346 | RAND_add(&h, sizeof(h), 0); |
10bb0dbf | 347 | } |
1d95fb65 RL |
348 | if (cursor) |
349 | { | |
350 | /* unfortunately, its not safe to call GetCursorInfo() | |
351 | * on NT4 even though it exists in SP3 (or SP6) and | |
352 | * higher. | |
353 | */ | |
acb341eb | 354 | if (check_winnt() && !check_win_minplat(5)) |
1d95fb65 RL |
355 | cursor = 0; |
356 | } | |
c0722725 UM |
357 | if (cursor) |
358 | { | |
359 | /* cursor position */ | |
10bb0dbf | 360 | /* assume 2 bytes of entropy */ |
1d95fb65 RL |
361 | CURSORINFO ci; |
362 | ci.cbSize = sizeof(CURSORINFO); | |
363 | if (cursor(&ci)) | |
10bb0dbf | 364 | RAND_add(&ci, ci.cbSize, 2); |
848f3d40 | 365 | } |
848f3d40 RL |
366 | |
367 | if (queue) | |
368 | { | |
369 | /* message queue status */ | |
10bb0dbf | 370 | /* assume 1 byte of entropy */ |
848f3d40 | 371 | w = queue(QS_ALLEVENTS); |
10bb0dbf | 372 | RAND_add(&w, sizeof(w), 1); |
c0722725 | 373 | } |
362f2b69 RL |
374 | |
375 | FreeLibrary(user); | |
c0722725 UM |
376 | } |
377 | ||
3e9a08ec TH |
378 | /*- |
379 | * Toolhelp32 snapshot: enumerate processes, threads, modules and heap | |
c0722725 | 380 | * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm |
1d95fb65 | 381 | * (Win 9x and 2000 only, not available on NT) |
c0722725 UM |
382 | * |
383 | * This seeding method was proposed in Peter Gutmann, Software | |
384 | * Generation of Practically Strong Random Numbers, | |
c0366d89 | 385 | * http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html |
88401ed4 | 386 | * revised version at http://www.cryptoengines.com/~peter/06_random.pdf |
c0722725 UM |
387 | * (The assignment of entropy estimates below is arbitrary, but based |
388 | * on Peter's analysis the full poll appears to be safe. Additional | |
389 | * interactive seeding is encouraged.) | |
390 | */ | |
391 | ||
392 | if (kernel) | |
393 | { | |
394 | CREATETOOLHELP32SNAPSHOT snap; | |
88401ed4 | 395 | CLOSETOOLHELP32SNAPSHOT close_snap; |
c0722725 UM |
396 | HANDLE handle; |
397 | ||
398 | HEAP32FIRST heap_first; | |
399 | HEAP32NEXT heap_next; | |
400 | HEAP32LIST heaplist_first, heaplist_next; | |
401 | PROCESS32 process_first, process_next; | |
402 | THREAD32 thread_first, thread_next; | |
403 | MODULE32 module_first, module_next; | |
404 | ||
405 | HEAPLIST32 hlist; | |
406 | HEAPENTRY32 hentry; | |
407 | PROCESSENTRY32 p; | |
408 | THREADENTRY32 t; | |
409 | MODULEENTRY32 m; | |
a238d7d1 | 410 | DWORD starttime = 0; |
c0722725 UM |
411 | |
412 | snap = (CREATETOOLHELP32SNAPSHOT) | |
89c53672 | 413 | GetProcAddress(kernel, "CreateToolhelp32Snapshot"); |
88401ed4 | 414 | close_snap = (CLOSETOOLHELP32SNAPSHOT) |
89c53672 AP |
415 | GetProcAddress(kernel, "CloseToolhelp32Snapshot"); |
416 | heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First"); | |
417 | heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next"); | |
418 | heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst"); | |
419 | heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext"); | |
420 | process_first = (PROCESS32) GetProcAddress(kernel, "Process32First"); | |
421 | process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next"); | |
422 | thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First"); | |
423 | thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next"); | |
424 | module_first = (MODULE32) GetProcAddress(kernel, "Module32First"); | |
425 | module_next = (MODULE32) GetProcAddress(kernel, "Module32Next"); | |
c0722725 UM |
426 | |
427 | if (snap && heap_first && heap_next && heaplist_first && | |
428 | heaplist_next && process_first && process_next && | |
429 | thread_first && thread_next && module_first && | |
430 | module_next && (handle = snap(TH32CS_SNAPALL,0)) | |
88401ed4 | 431 | != INVALID_HANDLE_VALUE) |
c0722725 UM |
432 | { |
433 | /* heap list and heap walking */ | |
10bb0dbf RL |
434 | /* HEAPLIST32 contains 3 fields that will change with |
435 | * each entry. Consider each field a source of 1 byte | |
436 | * of entropy. | |
437 | * HEAPENTRY32 contains 5 fields that will change with | |
438 | * each entry. Consider each field a source of 1 byte | |
439 | * of entropy. | |
440 | */ | |
2475a520 | 441 | ZeroMemory(&hlist, sizeof(HEAPLIST32)); |
c0722725 | 442 | hlist.dwSize = sizeof(HEAPLIST32); |
a238d7d1 | 443 | if (good) starttime = GetTickCount(); |
5e565842 | 444 | #ifdef _MSC_VER |
c0722725 | 445 | if (heaplist_first(handle, &hlist)) |
2475a520 DSH |
446 | { |
447 | /* | |
448 | following discussion on dev ML, exception on WinCE (or other Win | |
449 | platform) is theoretically of unknown origin; prevent infinite | |
450 | loop here when this theoretical case occurs; otherwise cope with | |
451 | the expected (MSDN documented) exception-throwing behaviour of | |
452 | Heap32Next() on WinCE. | |
453 | ||
454 | based on patch in original message by Tanguy Fautré (2009/03/02) | |
455 | Subject: RAND_poll() and CreateToolhelp32Snapshot() stability | |
456 | */ | |
457 | int ex_cnt_limit = 42; | |
c0722725 UM |
458 | do |
459 | { | |
10bb0dbf | 460 | RAND_add(&hlist, hlist.dwSize, 3); |
2475a520 DSH |
461 | __try |
462 | { | |
463 | ZeroMemory(&hentry, sizeof(HEAPENTRY32)); | |
c0722725 UM |
464 | hentry.dwSize = sizeof(HEAPENTRY32); |
465 | if (heap_first(&hentry, | |
466 | hlist.th32ProcessID, | |
467 | hlist.th32HeapID)) | |
c0366d89 | 468 | { |
9f6fe8db | 469 | int entrycnt = 80; |
c0722725 UM |
470 | do |
471 | RAND_add(&hentry, | |
10bb0dbf | 472 | hentry.dwSize, 5); |
c0366d89 | 473 | while (heap_next(&hentry) |
9051fc53 | 474 | && (!good || (GetTickCount()-starttime)<MAXDELAY) |
c0366d89 RL |
475 | && --entrycnt > 0); |
476 | } | |
2475a520 DSH |
477 | } |
478 | __except (EXCEPTION_EXECUTE_HANDLER) | |
479 | { | |
480 | /* ignore access violations when walking the heap list */ | |
481 | ex_cnt_limit--; | |
482 | } | |
483 | } while (heaplist_next(handle, &hlist) | |
a238d7d1 | 484 | && (!good || (GetTickCount()-starttime)<MAXDELAY) |
2475a520 DSH |
485 | && ex_cnt_limit > 0); |
486 | } | |
7a8c7288 | 487 | |
5e565842 DSH |
488 | #else |
489 | if (heaplist_first(handle, &hlist)) | |
490 | { | |
491 | do | |
492 | { | |
493 | RAND_add(&hlist, hlist.dwSize, 3); | |
494 | hentry.dwSize = sizeof(HEAPENTRY32); | |
495 | if (heap_first(&hentry, | |
496 | hlist.th32ProcessID, | |
497 | hlist.th32HeapID)) | |
498 | { | |
499 | int entrycnt = 80; | |
500 | do | |
501 | RAND_add(&hentry, | |
502 | hentry.dwSize, 5); | |
503 | while (heap_next(&hentry) | |
504 | && --entrycnt > 0); | |
505 | } | |
506 | } while (heaplist_next(handle, &hlist) | |
a238d7d1 | 507 | && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
5e565842 DSH |
508 | } |
509 | #endif | |
510 | ||
c0722725 | 511 | /* process walking */ |
10bb0dbf RL |
512 | /* PROCESSENTRY32 contains 9 fields that will change |
513 | * with each entry. Consider each field a source of | |
514 | * 1 byte of entropy. | |
515 | */ | |
c0722725 | 516 | p.dwSize = sizeof(PROCESSENTRY32); |
7a8c7288 | 517 | |
a238d7d1 | 518 | if (good) starttime = GetTickCount(); |
c0722725 UM |
519 | if (process_first(handle, &p)) |
520 | do | |
10bb0dbf | 521 | RAND_add(&p, p.dwSize, 9); |
a238d7d1 | 522 | while (process_next(handle, &p) && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
10bb0dbf | 523 | |
c0722725 | 524 | /* thread walking */ |
10bb0dbf RL |
525 | /* THREADENTRY32 contains 6 fields that will change |
526 | * with each entry. Consider each field a source of | |
527 | * 1 byte of entropy. | |
528 | */ | |
c0722725 | 529 | t.dwSize = sizeof(THREADENTRY32); |
a238d7d1 | 530 | if (good) starttime = GetTickCount(); |
c0722725 UM |
531 | if (thread_first(handle, &t)) |
532 | do | |
10bb0dbf | 533 | RAND_add(&t, t.dwSize, 6); |
a238d7d1 | 534 | while (thread_next(handle, &t) && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
10bb0dbf | 535 | |
c0722725 | 536 | /* module walking */ |
10bb0dbf RL |
537 | /* MODULEENTRY32 contains 9 fields that will change |
538 | * with each entry. Consider each field a source of | |
539 | * 1 byte of entropy. | |
540 | */ | |
c0722725 | 541 | m.dwSize = sizeof(MODULEENTRY32); |
a238d7d1 | 542 | if (good) starttime = GetTickCount(); |
c0722725 UM |
543 | if (module_first(handle, &m)) |
544 | do | |
10bb0dbf | 545 | RAND_add(&m, m.dwSize, 9); |
f68854b4 | 546 | while (module_next(handle, &m) |
a238d7d1 | 547 | && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
88401ed4 RL |
548 | if (close_snap) |
549 | close_snap(handle); | |
550 | else | |
551 | CloseHandle(handle); | |
7a8c7288 | 552 | |
c0722725 | 553 | } |
362f2b69 RL |
554 | |
555 | FreeLibrary(kernel); | |
c0722725 | 556 | } |
573969cd | 557 | } |
89c53672 AP |
558 | #endif /* !OPENSSL_SYS_WINCE */ |
559 | ||
560 | /* timer data */ | |
561 | readtimer(); | |
562 | ||
563 | /* memory usage statistics */ | |
564 | GlobalMemoryStatus(&m); | |
565 | RAND_add(&m, sizeof(m), 1); | |
566 | ||
567 | /* process ID */ | |
568 | w = GetCurrentProcessId(); | |
569 | RAND_add(&w, sizeof(w), 1); | |
c0722725 | 570 | |
3e563bce | 571 | #if 0 |
c0722725 | 572 | printf("Exiting RAND_poll\n"); |
2ace287d BM |
573 | #endif |
574 | ||
c0722725 UM |
575 | return(1); |
576 | } | |
2ace287d BM |
577 | |
578 | int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam) | |
579 | { | |
580 | double add_entropy=0; | |
2ace287d BM |
581 | |
582 | switch (iMsg) | |
583 | { | |
584 | case WM_KEYDOWN: | |
585 | { | |
586 | static WPARAM key; | |
587 | if (key != wParam) | |
588 | add_entropy = 0.05; | |
589 | key = wParam; | |
590 | } | |
591 | break; | |
592 | case WM_MOUSEMOVE: | |
593 | { | |
594 | static int lastx,lasty,lastdx,lastdy; | |
595 | int x,y,dx,dy; | |
596 | ||
597 | x=LOWORD(lParam); | |
598 | y=HIWORD(lParam); | |
599 | dx=lastx-x; | |
600 | dy=lasty-y; | |
601 | if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0) | |
602 | add_entropy=.2; | |
603 | lastx=x, lasty=y; | |
604 | lastdx=dx, lastdy=dy; | |
605 | } | |
606 | break; | |
607 | } | |
608 | ||
c0722725 | 609 | readtimer(); |
2ace287d BM |
610 | RAND_add(&iMsg, sizeof(iMsg), add_entropy); |
611 | RAND_add(&wParam, sizeof(wParam), 0); | |
612 | RAND_add(&lParam, sizeof(lParam), 0); | |
c0722725 | 613 | |
2ace287d BM |
614 | return (RAND_status()); |
615 | } | |
616 | ||
617 | ||
c0722725 UM |
618 | void RAND_screen(void) /* function available for backward compatibility */ |
619 | { | |
620 | RAND_poll(); | |
573969cd | 621 | readscreen(); |
c0722725 UM |
622 | } |
623 | ||
624 | ||
625 | /* feed timing information to the PRNG */ | |
626 | static void readtimer(void) | |
627 | { | |
159cf04e | 628 | DWORD w; |
c0722725 UM |
629 | LARGE_INTEGER l; |
630 | static int have_perfc = 1; | |
89c53672 | 631 | #if defined(_MSC_VER) && defined(_M_X86) |
c0722725 | 632 | static int have_tsc = 1; |
159cf04e | 633 | DWORD cyclecount; |
c0722725 UM |
634 | |
635 | if (have_tsc) { | |
636 | __try { | |
637 | __asm { | |
429cf462 | 638 | _emit 0x0f |
40e15f9d | 639 | _emit 0x31 |
c0722725 UM |
640 | mov cyclecount, eax |
641 | } | |
642 | RAND_add(&cyclecount, sizeof(cyclecount), 1); | |
643 | } __except(EXCEPTION_EXECUTE_HANDLER) { | |
644 | have_tsc = 0; | |
645 | } | |
646 | } | |
647 | #else | |
648 | # define have_tsc 0 | |
649 | #endif | |
650 | ||
651 | if (have_perfc) { | |
652 | if (QueryPerformanceCounter(&l) == 0) | |
653 | have_perfc = 0; | |
654 | else | |
655 | RAND_add(&l, sizeof(l), 0); | |
656 | } | |
657 | ||
658 | if (!have_tsc && !have_perfc) { | |
659 | w = GetTickCount(); | |
660 | RAND_add(&w, sizeof(w), 0); | |
661 | } | |
662 | } | |
663 | ||
664 | /* feed screen contents to PRNG */ | |
2ace287d | 665 | /***************************************************************************** |
2ace287d BM |
666 | * |
667 | * Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V. | |
668 | * | |
669 | * Code adapted from | |
c0017a5a | 670 | * <URL:http://support.microsoft.com/default.aspx?scid=kb;[LN];97193>; |
2ace287d BM |
671 | * the original copyright message is: |
672 | * | |
673 | * (C) Copyright Microsoft Corp. 1993. All rights reserved. | |
674 | * | |
675 | * You have a royalty-free right to use, modify, reproduce and | |
676 | * distribute the Sample Files (and/or any modified version) in | |
677 | * any way you find useful, provided that you agree that | |
678 | * Microsoft has no warranty obligations or liability for any | |
679 | * Sample Application Files which are modified. | |
680 | */ | |
c0722725 UM |
681 | |
682 | static void readscreen(void) | |
2ace287d | 683 | { |
130db968 | 684 | #if !defined(OPENSSL_SYS_WINCE) && !defined(OPENSSL_SYS_WIN32_CYGWIN) |
2ace287d BM |
685 | HDC hScrDC; /* screen DC */ |
686 | HDC hMemDC; /* memory DC */ | |
687 | HBITMAP hBitmap; /* handle for our bitmap */ | |
688 | HBITMAP hOldBitmap; /* handle for previous bitmap */ | |
689 | BITMAP bm; /* bitmap properties */ | |
690 | unsigned int size; /* size of bitmap */ | |
691 | char *bmbits; /* contents of bitmap */ | |
692 | int w; /* screen width */ | |
693 | int h; /* screen height */ | |
694 | int y; /* y-coordinate of screen lines to grab */ | |
695 | int n = 16; /* number of screen lines to grab at a time */ | |
696 | ||
caf55bfa | 697 | if (check_winnt() && OPENSSL_isservice()>0) |
573969cd AP |
698 | return; |
699 | ||
2ace287d | 700 | /* Create a screen DC and a memory DC compatible to screen DC */ |
0bf23d9b | 701 | hScrDC = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL); |
2ace287d BM |
702 | hMemDC = CreateCompatibleDC(hScrDC); |
703 | ||
704 | /* Get screen resolution */ | |
705 | w = GetDeviceCaps(hScrDC, HORZRES); | |
706 | h = GetDeviceCaps(hScrDC, VERTRES); | |
707 | ||
708 | /* Create a bitmap compatible with the screen DC */ | |
709 | hBitmap = CreateCompatibleBitmap(hScrDC, w, n); | |
710 | ||
711 | /* Select new bitmap into memory DC */ | |
712 | hOldBitmap = SelectObject(hMemDC, hBitmap); | |
713 | ||
714 | /* Get bitmap properties */ | |
715 | GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm); | |
716 | size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes; | |
717 | ||
26a3a48d | 718 | bmbits = OPENSSL_malloc(size); |
2ace287d BM |
719 | if (bmbits) { |
720 | /* Now go through the whole screen, repeatedly grabbing n lines */ | |
721 | for (y = 0; y < h-n; y += n) | |
722 | { | |
723 | unsigned char md[MD_DIGEST_LENGTH]; | |
724 | ||
725 | /* Bitblt screen DC to memory DC */ | |
726 | BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY); | |
727 | ||
728 | /* Copy bitmap bits from memory DC to bmbits */ | |
729 | GetBitmapBits(hBitmap, size, bmbits); | |
730 | ||
c0722725 | 731 | /* Get the hash of the bitmap */ |
2ace287d BM |
732 | MD(bmbits,size,md); |
733 | ||
c0722725 UM |
734 | /* Seed the random generator with the hash value */ |
735 | RAND_add(md, MD_DIGEST_LENGTH, 0); | |
2ace287d BM |
736 | } |
737 | ||
26a3a48d | 738 | OPENSSL_free(bmbits); |
2ace287d BM |
739 | } |
740 | ||
741 | /* Select old bitmap back into memory DC */ | |
742 | hBitmap = SelectObject(hMemDC, hOldBitmap); | |
743 | ||
744 | /* Clean up */ | |
745 | DeleteObject(hBitmap); | |
746 | DeleteDC(hMemDC); | |
747 | DeleteDC(hScrDC); | |
0bf23d9b | 748 | #endif /* !OPENSSL_SYS_WINCE */ |
2ace287d BM |
749 | } |
750 | ||
2ace287d | 751 | #endif |