]>
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 | ||
73e45b2d | 112 | |
06b433ac | 113 | |
c0722725 UM |
114 | #include "cryptlib.h" |
115 | #include <openssl/rand.h> | |
116 | #include "rand_lcl.h" | |
2ace287d | 117 | |
7a8c7288 | 118 | #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) |
2ace287d | 119 | #include <windows.h> |
c0722725 UM |
120 | #ifndef _WIN32_WINNT |
121 | # define _WIN32_WINNT 0x0400 | |
2ace287d | 122 | #endif |
c0722725 UM |
123 | #include <wincrypt.h> |
124 | #include <tlhelp32.h> | |
125 | ||
7a8c7288 UM |
126 | /* Limit the time spent walking through the heap, processes, threads and modules to |
127 | a maximum of 1000 miliseconds each, unless CryptoGenRandom failed */ | |
128 | #define MAXDELAY 1000 | |
129 | ||
c0722725 UM |
130 | /* Intel hardware RNG CSP -- available from |
131 | * http://developer.intel.com/design/security/rng/redist_license.htm | |
132 | */ | |
133 | #define PROV_INTEL_SEC 22 | |
89c53672 | 134 | #define INTEL_DEF_PROV L"Intel Hardware Cryptographic Service Provider" |
c0722725 UM |
135 | |
136 | static void readtimer(void); | |
137 | static void readscreen(void); | |
138 | ||
7abee0ce RL |
139 | /* It appears like CURSORINFO, PCURSORINFO and LPCURSORINFO are only defined |
140 | when WINVER is 0x0500 and up, which currently only happens on Win2000. | |
141 | Unfortunately, those are typedefs, so they're a little bit difficult to | |
142 | detect properly. On the other hand, the macro CURSOR_SHOWING is defined | |
143 | within the same conditional, so it can be use to detect the absence of said | |
144 | typedefs. */ | |
145 | ||
c0366d89 | 146 | #ifndef CURSOR_SHOWING |
7abee0ce RL |
147 | /* |
148 | * Information about the global cursor. | |
149 | */ | |
150 | typedef struct tagCURSORINFO | |
151 | { | |
152 | DWORD cbSize; | |
153 | DWORD flags; | |
154 | HCURSOR hCursor; | |
155 | POINT ptScreenPos; | |
156 | } CURSORINFO, *PCURSORINFO, *LPCURSORINFO; | |
157 | ||
158 | #define CURSOR_SHOWING 0x00000001 | |
159 | #endif /* CURSOR_SHOWING */ | |
c0366d89 | 160 | |
0491e058 | 161 | #if !defined(OPENSSL_SYS_WINCE) |
89c53672 | 162 | typedef BOOL (WINAPI *CRYPTACQUIRECONTEXTW)(HCRYPTPROV *, LPCWSTR, LPCWSTR, |
c0722725 UM |
163 | DWORD, DWORD); |
164 | typedef BOOL (WINAPI *CRYPTGENRANDOM)(HCRYPTPROV, DWORD, BYTE *); | |
165 | typedef BOOL (WINAPI *CRYPTRELEASECONTEXT)(HCRYPTPROV, DWORD); | |
166 | ||
167 | typedef HWND (WINAPI *GETFOREGROUNDWINDOW)(VOID); | |
168 | typedef BOOL (WINAPI *GETCURSORINFO)(PCURSORINFO); | |
169 | typedef DWORD (WINAPI *GETQUEUESTATUS)(UINT); | |
170 | ||
171 | typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD); | |
88401ed4 | 172 | typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE); |
b92c0df8 | 173 | typedef BOOL (WINAPI *HEAP32FIRST)(LPHEAPENTRY32, DWORD, size_t); |
c0722725 UM |
174 | typedef BOOL (WINAPI *HEAP32NEXT)(LPHEAPENTRY32); |
175 | typedef BOOL (WINAPI *HEAP32LIST)(HANDLE, LPHEAPLIST32); | |
176 | typedef BOOL (WINAPI *PROCESS32)(HANDLE, LPPROCESSENTRY32); | |
177 | typedef BOOL (WINAPI *THREAD32)(HANDLE, LPTHREADENTRY32); | |
178 | typedef BOOL (WINAPI *MODULE32)(HANDLE, LPMODULEENTRY32); | |
179 | ||
1d95fb65 RL |
180 | #include <lmcons.h> |
181 | #include <lmstats.h> | |
dbd87ffc MC |
182 | #if 1 |
183 | /* The NET API is Unicode only. It requires the use of the UNICODE | |
184 | * macro. When UNICODE is defined LPTSTR becomes LPWSTR. LMSTR was | |
185 | * was added to the Platform SDK to allow the NET API to be used in | |
186 | * non-Unicode applications provided that Unicode strings were still | |
187 | * used for input. LMSTR is defined as LPWSTR. | |
188 | */ | |
1d95fb65 | 189 | typedef NET_API_STATUS (NET_API_FUNCTION * NETSTATGET) |
10bb0dbf | 190 | (LPWSTR, LPWSTR, DWORD, DWORD, LPBYTE*); |
1d95fb65 | 191 | typedef NET_API_STATUS (NET_API_FUNCTION * NETFREE)(LPBYTE); |
10bb0dbf | 192 | #endif /* 1 */ |
0491e058 | 193 | #endif /* !OPENSSL_SYS_WINCE */ |
1d95fb65 | 194 | |
c0722725 UM |
195 | int RAND_poll(void) |
196 | { | |
197 | MEMORYSTATUS m; | |
198 | HCRYPTPROV hProvider = 0; | |
c0722725 | 199 | DWORD w; |
7a8c7288 | 200 | int good = 0; |
c0722725 | 201 | |
c0722725 | 202 | |
8a35fb3b | 203 | #if defined(OPENSSL_SYS_WINCE) |
19bd66fe AP |
204 | # if defined(_WIN32_WCE) && _WIN32_WCE>=300 |
205 | /* Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available | |
206 | * in commonly available implementations prior 300... */ | |
0491e058 AP |
207 | { |
208 | BYTE buf[64]; | |
0bf23d9b RL |
209 | /* poll the CryptoAPI PRNG */ |
210 | /* The CryptoAPI returns sizeof(buf) bytes of randomness */ | |
0491e058 AP |
211 | if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, |
212 | CRYPT_VERIFYCONTEXT)) | |
0bf23d9b RL |
213 | { |
214 | if (CryptGenRandom(hProvider, sizeof(buf), buf)) | |
215 | RAND_add(buf, sizeof(buf), sizeof(buf)); | |
216 | CryptReleaseContext(hProvider, 0); | |
217 | } | |
0491e058 | 218 | } |
8a35fb3b AP |
219 | # endif |
220 | #else /* OPENSSL_SYS_WINCE */ | |
89c53672 AP |
221 | /* |
222 | * None of below libraries are present on Windows CE, which is | |
223 | * why we #ifndef the whole section. This also excuses us from | |
224 | * handling the GetProcAddress issue. The trouble is that in | |
225 | * real Win32 API GetProcAddress is available in ANSI flavor | |
226 | * only. In WinCE on the other hand GetProcAddress is a macro | |
227 | * most commonly defined as GetProcAddressW, which accepts | |
228 | * Unicode argument. If we were to call GetProcAddress under | |
229 | * WinCE, I'd recommend to either redefine GetProcAddress as | |
230 | * GetProcAddressA (there seem to be one in common CE spec) or | |
231 | * implement own shim routine, which would accept ANSI argument | |
232 | * and expand it to Unicode. | |
233 | */ | |
573969cd | 234 | { |
c0722725 | 235 | /* load functions dynamically - not available on all systems */ |
573969cd AP |
236 | HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL")); |
237 | HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL")); | |
238 | HMODULE user = NULL; | |
239 | HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL")); | |
240 | CRYPTACQUIRECONTEXTW acquire = NULL; | |
241 | CRYPTGENRANDOM gen = NULL; | |
242 | CRYPTRELEASECONTEXT release = NULL; | |
243 | NETSTATGET netstatget = NULL; | |
244 | NETFREE netfree = NULL; | |
0491e058 | 245 | BYTE buf[64]; |
573969cd | 246 | |
1d95fb65 RL |
247 | if (netapi) |
248 | { | |
89c53672 AP |
249 | netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet"); |
250 | netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree"); | |
1d95fb65 RL |
251 | } |
252 | ||
253 | if (netstatget && netfree) | |
254 | { | |
255 | LPBYTE outbuf; | |
10bb0dbf RL |
256 | /* NetStatisticsGet() is a Unicode only function |
257 | * STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0 | |
258 | * contains 17 fields. We treat each field as a source of | |
259 | * one byte of entropy. | |
260 | */ | |
261 | ||
1d95fb65 RL |
262 | if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0) |
263 | { | |
10bb0dbf | 264 | RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45); |
1d95fb65 RL |
265 | netfree(outbuf); |
266 | } | |
267 | if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0) | |
268 | { | |
10bb0dbf | 269 | RAND_add(outbuf, sizeof(STAT_SERVER_0), 17); |
1d95fb65 RL |
270 | netfree(outbuf); |
271 | } | |
272 | } | |
273 | ||
362f2b69 RL |
274 | if (netapi) |
275 | FreeLibrary(netapi); | |
89c53672 | 276 | |
10bb0dbf RL |
277 | /* It appears like this can cause an exception deep within ADVAPI32.DLL |
278 | * at random times on Windows 2000. Reported by Jeffrey Altman. | |
279 | * Only use it on NT. | |
280 | */ | |
c0722725 UM |
281 | |
282 | if (advapi) | |
283 | { | |
89c53672 AP |
284 | /* |
285 | * If it's available, then it's available in both ANSI | |
286 | * and UNICODE flavors even in Win9x, documentation says. | |
287 | * We favor Unicode... | |
288 | */ | |
289 | acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi, | |
290 | "CryptAcquireContextW"); | |
c0722725 | 291 | gen = (CRYPTGENRANDOM) GetProcAddress(advapi, |
89c53672 | 292 | "CryptGenRandom"); |
c0722725 | 293 | release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi, |
89c53672 | 294 | "CryptReleaseContext"); |
c0722725 UM |
295 | } |
296 | ||
297 | if (acquire && gen && release) | |
298 | { | |
299 | /* poll the CryptoAPI PRNG */ | |
10bb0dbf | 300 | /* The CryptoAPI returns sizeof(buf) bytes of randomness */ |
8a35fb3b | 301 | if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL, |
c0722725 UM |
302 | CRYPT_VERIFYCONTEXT)) |
303 | { | |
304 | if (gen(hProvider, sizeof(buf), buf) != 0) | |
305 | { | |
361c7f2b | 306 | RAND_add(buf, sizeof(buf), 0); |
7a8c7288 | 307 | good = 1; |
3e563bce | 308 | #if 0 |
c0722725 | 309 | printf("randomness from PROV_RSA_FULL\n"); |
2ace287d | 310 | #endif |
c0722725 UM |
311 | } |
312 | release(hProvider, 0); | |
313 | } | |
314 | ||
315 | /* poll the Pentium PRG with CryptoAPI */ | |
316 | if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0)) | |
317 | { | |
318 | if (gen(hProvider, sizeof(buf), buf) != 0) | |
319 | { | |
10bb0dbf | 320 | RAND_add(buf, sizeof(buf), sizeof(buf)); |
7a8c7288 | 321 | good = 1; |
3e563bce | 322 | #if 0 |
c0722725 UM |
323 | printf("randomness from PROV_INTEL_SEC\n"); |
324 | #endif | |
325 | } | |
326 | release(hProvider, 0); | |
327 | } | |
328 | } | |
329 | ||
362f2b69 RL |
330 | if (advapi) |
331 | FreeLibrary(advapi); | |
332 | ||
86d21d0b | 333 | if ((!check_winnt() || |
573969cd AP |
334 | !OPENSSL_isservice()) && |
335 | (user = LoadLibrary(TEXT("USER32.DLL")))) | |
c0722725 UM |
336 | { |
337 | GETCURSORINFO cursor; | |
338 | GETFOREGROUNDWINDOW win; | |
848f3d40 | 339 | GETQUEUESTATUS queue; |
c0722725 | 340 | |
89c53672 AP |
341 | win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow"); |
342 | cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo"); | |
343 | queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus"); | |
c0722725 UM |
344 | |
345 | if (win) | |
10bb0dbf | 346 | { |
c0722725 | 347 | /* window handle */ |
573969cd | 348 | HWND h = win(); |
c0722725 | 349 | RAND_add(&h, sizeof(h), 0); |
10bb0dbf | 350 | } |
1d95fb65 RL |
351 | if (cursor) |
352 | { | |
353 | /* unfortunately, its not safe to call GetCursorInfo() | |
354 | * on NT4 even though it exists in SP3 (or SP6) and | |
355 | * higher. | |
356 | */ | |
86d21d0b | 357 | if (check_winnt() && !check_win_minplat(5)) |
1d95fb65 RL |
358 | cursor = 0; |
359 | } | |
c0722725 UM |
360 | if (cursor) |
361 | { | |
362 | /* cursor position */ | |
10bb0dbf | 363 | /* assume 2 bytes of entropy */ |
1d95fb65 RL |
364 | CURSORINFO ci; |
365 | ci.cbSize = sizeof(CURSORINFO); | |
366 | if (cursor(&ci)) | |
10bb0dbf | 367 | RAND_add(&ci, ci.cbSize, 2); |
848f3d40 | 368 | } |
848f3d40 RL |
369 | |
370 | if (queue) | |
371 | { | |
372 | /* message queue status */ | |
10bb0dbf | 373 | /* assume 1 byte of entropy */ |
848f3d40 | 374 | w = queue(QS_ALLEVENTS); |
10bb0dbf | 375 | RAND_add(&w, sizeof(w), 1); |
c0722725 | 376 | } |
362f2b69 RL |
377 | |
378 | FreeLibrary(user); | |
c0722725 UM |
379 | } |
380 | ||
3a83462d MC |
381 | /*- |
382 | * Toolhelp32 snapshot: enumerate processes, threads, modules and heap | |
c0722725 | 383 | * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm |
1d95fb65 | 384 | * (Win 9x and 2000 only, not available on NT) |
c0722725 UM |
385 | * |
386 | * This seeding method was proposed in Peter Gutmann, Software | |
387 | * Generation of Practically Strong Random Numbers, | |
c0366d89 | 388 | * http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html |
88401ed4 | 389 | * revised version at http://www.cryptoengines.com/~peter/06_random.pdf |
c0722725 UM |
390 | * (The assignment of entropy estimates below is arbitrary, but based |
391 | * on Peter's analysis the full poll appears to be safe. Additional | |
392 | * interactive seeding is encouraged.) | |
393 | */ | |
394 | ||
395 | if (kernel) | |
396 | { | |
397 | CREATETOOLHELP32SNAPSHOT snap; | |
88401ed4 | 398 | CLOSETOOLHELP32SNAPSHOT close_snap; |
c0722725 UM |
399 | HANDLE handle; |
400 | ||
401 | HEAP32FIRST heap_first; | |
402 | HEAP32NEXT heap_next; | |
403 | HEAP32LIST heaplist_first, heaplist_next; | |
404 | PROCESS32 process_first, process_next; | |
405 | THREAD32 thread_first, thread_next; | |
406 | MODULE32 module_first, module_next; | |
407 | ||
408 | HEAPLIST32 hlist; | |
409 | HEAPENTRY32 hentry; | |
410 | PROCESSENTRY32 p; | |
411 | THREADENTRY32 t; | |
412 | MODULEENTRY32 m; | |
7a6e0901 | 413 | DWORD starttime = 0; |
c0722725 UM |
414 | |
415 | snap = (CREATETOOLHELP32SNAPSHOT) | |
89c53672 | 416 | GetProcAddress(kernel, "CreateToolhelp32Snapshot"); |
88401ed4 | 417 | close_snap = (CLOSETOOLHELP32SNAPSHOT) |
89c53672 AP |
418 | GetProcAddress(kernel, "CloseToolhelp32Snapshot"); |
419 | heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First"); | |
420 | heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next"); | |
421 | heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst"); | |
422 | heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext"); | |
423 | process_first = (PROCESS32) GetProcAddress(kernel, "Process32First"); | |
424 | process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next"); | |
425 | thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First"); | |
426 | thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next"); | |
427 | module_first = (MODULE32) GetProcAddress(kernel, "Module32First"); | |
428 | module_next = (MODULE32) GetProcAddress(kernel, "Module32Next"); | |
c0722725 UM |
429 | |
430 | if (snap && heap_first && heap_next && heaplist_first && | |
431 | heaplist_next && process_first && process_next && | |
432 | thread_first && thread_next && module_first && | |
433 | module_next && (handle = snap(TH32CS_SNAPALL,0)) | |
88401ed4 | 434 | != INVALID_HANDLE_VALUE) |
c0722725 UM |
435 | { |
436 | /* heap list and heap walking */ | |
10bb0dbf RL |
437 | /* HEAPLIST32 contains 3 fields that will change with |
438 | * each entry. Consider each field a source of 1 byte | |
439 | * of entropy. | |
440 | * HEAPENTRY32 contains 5 fields that will change with | |
441 | * each entry. Consider each field a source of 1 byte | |
442 | * of entropy. | |
443 | */ | |
75a86fa0 | 444 | ZeroMemory(&hlist, sizeof(HEAPLIST32)); |
c0722725 | 445 | hlist.dwSize = sizeof(HEAPLIST32); |
7a6e0901 | 446 | if (good) starttime = GetTickCount(); |
44c8b81e | 447 | #ifdef _MSC_VER |
c0722725 | 448 | if (heaplist_first(handle, &hlist)) |
75a86fa0 DSH |
449 | { |
450 | /* | |
451 | following discussion on dev ML, exception on WinCE (or other Win | |
452 | platform) is theoretically of unknown origin; prevent infinite | |
453 | loop here when this theoretical case occurs; otherwise cope with | |
454 | the expected (MSDN documented) exception-throwing behaviour of | |
455 | Heap32Next() on WinCE. | |
456 | ||
457 | based on patch in original message by Tanguy Fautré (2009/03/02) | |
458 | Subject: RAND_poll() and CreateToolhelp32Snapshot() stability | |
459 | */ | |
460 | int ex_cnt_limit = 42; | |
c0722725 UM |
461 | do |
462 | { | |
10bb0dbf | 463 | RAND_add(&hlist, hlist.dwSize, 3); |
75a86fa0 DSH |
464 | __try |
465 | { | |
466 | ZeroMemory(&hentry, sizeof(HEAPENTRY32)); | |
c0722725 UM |
467 | hentry.dwSize = sizeof(HEAPENTRY32); |
468 | if (heap_first(&hentry, | |
469 | hlist.th32ProcessID, | |
470 | hlist.th32HeapID)) | |
c0366d89 | 471 | { |
9f6fe8db | 472 | int entrycnt = 80; |
c0722725 UM |
473 | do |
474 | RAND_add(&hentry, | |
10bb0dbf | 475 | hentry.dwSize, 5); |
c0366d89 | 476 | while (heap_next(&hentry) |
47e0a1c3 | 477 | && (!good || (GetTickCount()-starttime)<MAXDELAY) |
c0366d89 RL |
478 | && --entrycnt > 0); |
479 | } | |
75a86fa0 DSH |
480 | } |
481 | __except (EXCEPTION_EXECUTE_HANDLER) | |
482 | { | |
483 | /* ignore access violations when walking the heap list */ | |
484 | ex_cnt_limit--; | |
485 | } | |
486 | } while (heaplist_next(handle, &hlist) | |
b3020393 | 487 | && (!good || (GetTickCount()-starttime)<MAXDELAY) |
75a86fa0 DSH |
488 | && ex_cnt_limit > 0); |
489 | } | |
7a8c7288 | 490 | |
44c8b81e DSH |
491 | #else |
492 | if (heaplist_first(handle, &hlist)) | |
493 | { | |
494 | do | |
495 | { | |
496 | RAND_add(&hlist, hlist.dwSize, 3); | |
497 | hentry.dwSize = sizeof(HEAPENTRY32); | |
498 | if (heap_first(&hentry, | |
499 | hlist.th32ProcessID, | |
500 | hlist.th32HeapID)) | |
501 | { | |
502 | int entrycnt = 80; | |
503 | do | |
504 | RAND_add(&hentry, | |
505 | hentry.dwSize, 5); | |
506 | while (heap_next(&hentry) | |
507 | && --entrycnt > 0); | |
508 | } | |
509 | } while (heaplist_next(handle, &hlist) | |
b3020393 | 510 | && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
44c8b81e DSH |
511 | } |
512 | #endif | |
513 | ||
c0722725 | 514 | /* process walking */ |
10bb0dbf RL |
515 | /* PROCESSENTRY32 contains 9 fields that will change |
516 | * with each entry. Consider each field a source of | |
517 | * 1 byte of entropy. | |
518 | */ | |
c0722725 | 519 | p.dwSize = sizeof(PROCESSENTRY32); |
7a8c7288 | 520 | |
7a6e0901 | 521 | if (good) starttime = GetTickCount(); |
c0722725 UM |
522 | if (process_first(handle, &p)) |
523 | do | |
10bb0dbf | 524 | RAND_add(&p, p.dwSize, 9); |
b3020393 | 525 | while (process_next(handle, &p) && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
10bb0dbf | 526 | |
c0722725 | 527 | /* thread walking */ |
10bb0dbf RL |
528 | /* THREADENTRY32 contains 6 fields that will change |
529 | * with each entry. Consider each field a source of | |
530 | * 1 byte of entropy. | |
531 | */ | |
c0722725 | 532 | t.dwSize = sizeof(THREADENTRY32); |
7a6e0901 | 533 | if (good) starttime = GetTickCount(); |
c0722725 UM |
534 | if (thread_first(handle, &t)) |
535 | do | |
10bb0dbf | 536 | RAND_add(&t, t.dwSize, 6); |
b3020393 | 537 | while (thread_next(handle, &t) && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
10bb0dbf | 538 | |
c0722725 | 539 | /* module walking */ |
10bb0dbf RL |
540 | /* MODULEENTRY32 contains 9 fields that will change |
541 | * with each entry. Consider each field a source of | |
542 | * 1 byte of entropy. | |
543 | */ | |
c0722725 | 544 | m.dwSize = sizeof(MODULEENTRY32); |
7a6e0901 | 545 | if (good) starttime = GetTickCount(); |
c0722725 UM |
546 | if (module_first(handle, &m)) |
547 | do | |
10bb0dbf | 548 | RAND_add(&m, m.dwSize, 9); |
f68854b4 | 549 | while (module_next(handle, &m) |
b3020393 | 550 | && (!good || (GetTickCount()-starttime)<MAXDELAY)); |
88401ed4 RL |
551 | if (close_snap) |
552 | close_snap(handle); | |
553 | else | |
554 | CloseHandle(handle); | |
7a8c7288 | 555 | |
c0722725 | 556 | } |
362f2b69 RL |
557 | |
558 | FreeLibrary(kernel); | |
c0722725 | 559 | } |
573969cd | 560 | } |
89c53672 AP |
561 | #endif /* !OPENSSL_SYS_WINCE */ |
562 | ||
563 | /* timer data */ | |
564 | readtimer(); | |
565 | ||
566 | /* memory usage statistics */ | |
567 | GlobalMemoryStatus(&m); | |
568 | RAND_add(&m, sizeof(m), 1); | |
569 | ||
570 | /* process ID */ | |
571 | w = GetCurrentProcessId(); | |
572 | RAND_add(&w, sizeof(w), 1); | |
c0722725 | 573 | |
3e563bce | 574 | #if 0 |
c0722725 | 575 | printf("Exiting RAND_poll\n"); |
2ace287d BM |
576 | #endif |
577 | ||
c0722725 UM |
578 | return(1); |
579 | } | |
2ace287d BM |
580 | |
581 | int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam) | |
582 | { | |
583 | double add_entropy=0; | |
2ace287d BM |
584 | |
585 | switch (iMsg) | |
586 | { | |
587 | case WM_KEYDOWN: | |
588 | { | |
589 | static WPARAM key; | |
590 | if (key != wParam) | |
591 | add_entropy = 0.05; | |
592 | key = wParam; | |
593 | } | |
594 | break; | |
595 | case WM_MOUSEMOVE: | |
596 | { | |
597 | static int lastx,lasty,lastdx,lastdy; | |
598 | int x,y,dx,dy; | |
599 | ||
600 | x=LOWORD(lParam); | |
601 | y=HIWORD(lParam); | |
602 | dx=lastx-x; | |
603 | dy=lasty-y; | |
604 | if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0) | |
605 | add_entropy=.2; | |
606 | lastx=x, lasty=y; | |
607 | lastdx=dx, lastdy=dy; | |
608 | } | |
609 | break; | |
610 | } | |
611 | ||
c0722725 | 612 | readtimer(); |
2ace287d BM |
613 | RAND_add(&iMsg, sizeof(iMsg), add_entropy); |
614 | RAND_add(&wParam, sizeof(wParam), 0); | |
615 | RAND_add(&lParam, sizeof(lParam), 0); | |
c0722725 | 616 | |
2ace287d BM |
617 | return (RAND_status()); |
618 | } | |
619 | ||
620 | ||
c0722725 UM |
621 | void RAND_screen(void) /* function available for backward compatibility */ |
622 | { | |
623 | RAND_poll(); | |
573969cd | 624 | readscreen(); |
c0722725 UM |
625 | } |
626 | ||
627 | ||
628 | /* feed timing information to the PRNG */ | |
629 | static void readtimer(void) | |
630 | { | |
159cf04e | 631 | DWORD w; |
c0722725 UM |
632 | LARGE_INTEGER l; |
633 | static int have_perfc = 1; | |
89c53672 | 634 | #if defined(_MSC_VER) && defined(_M_X86) |
c0722725 | 635 | static int have_tsc = 1; |
159cf04e | 636 | DWORD cyclecount; |
c0722725 UM |
637 | |
638 | if (have_tsc) { | |
639 | __try { | |
640 | __asm { | |
429cf462 | 641 | _emit 0x0f |
40e15f9d | 642 | _emit 0x31 |
c0722725 UM |
643 | mov cyclecount, eax |
644 | } | |
645 | RAND_add(&cyclecount, sizeof(cyclecount), 1); | |
646 | } __except(EXCEPTION_EXECUTE_HANDLER) { | |
647 | have_tsc = 0; | |
648 | } | |
649 | } | |
650 | #else | |
651 | # define have_tsc 0 | |
652 | #endif | |
653 | ||
654 | if (have_perfc) { | |
655 | if (QueryPerformanceCounter(&l) == 0) | |
656 | have_perfc = 0; | |
657 | else | |
658 | RAND_add(&l, sizeof(l), 0); | |
659 | } | |
660 | ||
661 | if (!have_tsc && !have_perfc) { | |
662 | w = GetTickCount(); | |
663 | RAND_add(&w, sizeof(w), 0); | |
664 | } | |
665 | } | |
666 | ||
667 | /* feed screen contents to PRNG */ | |
2ace287d | 668 | /***************************************************************************** |
2ace287d BM |
669 | * |
670 | * Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V. | |
671 | * | |
672 | * Code adapted from | |
c0017a5a | 673 | * <URL:http://support.microsoft.com/default.aspx?scid=kb;[LN];97193>; |
2ace287d BM |
674 | * the original copyright message is: |
675 | * | |
676 | * (C) Copyright Microsoft Corp. 1993. All rights reserved. | |
677 | * | |
678 | * You have a royalty-free right to use, modify, reproduce and | |
679 | * distribute the Sample Files (and/or any modified version) in | |
680 | * any way you find useful, provided that you agree that | |
681 | * Microsoft has no warranty obligations or liability for any | |
682 | * Sample Application Files which are modified. | |
683 | */ | |
c0722725 UM |
684 | |
685 | static void readscreen(void) | |
2ace287d | 686 | { |
130db968 | 687 | #if !defined(OPENSSL_SYS_WINCE) && !defined(OPENSSL_SYS_WIN32_CYGWIN) |
2ace287d | 688 | HDC hScrDC; /* screen DC */ |
2ace287d | 689 | HBITMAP hBitmap; /* handle for our bitmap */ |
2ace287d BM |
690 | BITMAP bm; /* bitmap properties */ |
691 | unsigned int size; /* size of bitmap */ | |
692 | char *bmbits; /* contents of bitmap */ | |
693 | int w; /* screen width */ | |
694 | int h; /* screen height */ | |
695 | int y; /* y-coordinate of screen lines to grab */ | |
696 | int n = 16; /* number of screen lines to grab at a time */ | |
99b00fd9 | 697 | BITMAPINFOHEADER bi; /* info about the bitmap */ |
2ace287d | 698 | |
a4cc3c80 | 699 | if (check_winnt() && OPENSSL_isservice()>0) |
573969cd AP |
700 | return; |
701 | ||
99b00fd9 JG |
702 | /* Get a reference to the screen DC */ |
703 | hScrDC = GetDC(NULL); | |
2ace287d BM |
704 | |
705 | /* Get screen resolution */ | |
706 | w = GetDeviceCaps(hScrDC, HORZRES); | |
707 | h = GetDeviceCaps(hScrDC, VERTRES); | |
708 | ||
709 | /* Create a bitmap compatible with the screen DC */ | |
710 | hBitmap = CreateCompatibleBitmap(hScrDC, w, n); | |
711 | ||
2ace287d BM |
712 | /* Get bitmap properties */ |
713 | GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm); | |
714 | size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes; | |
715 | ||
99b00fd9 JG |
716 | bi.biSize = sizeof(BITMAPINFOHEADER); |
717 | bi.biWidth = bm.bmWidth; | |
718 | bi.biHeight = bm.bmHeight; | |
719 | bi.biPlanes = bm.bmPlanes; | |
720 | bi.biBitCount = bm.bmBitsPixel; | |
721 | bi.biCompression = BI_RGB; | |
722 | bi.biSizeImage = 0; | |
723 | bi.biXPelsPerMeter = 0; | |
724 | bi.biYPelsPerMeter = 0; | |
725 | bi.biClrUsed = 0; | |
726 | bi.biClrImportant = 0; | |
727 | ||
26a3a48d | 728 | bmbits = OPENSSL_malloc(size); |
2ace287d BM |
729 | if (bmbits) { |
730 | /* Now go through the whole screen, repeatedly grabbing n lines */ | |
731 | for (y = 0; y < h-n; y += n) | |
732 | { | |
733 | unsigned char md[MD_DIGEST_LENGTH]; | |
734 | ||
99b00fd9 JG |
735 | /* Copy the bits of the current line range into the buffer */ |
736 | GetDIBits(hScrDC, hBitmap, y, n, | |
737 | bmbits, (BITMAPINFO *)&bi, DIB_RGB_COLORS); | |
2ace287d | 738 | |
c0722725 | 739 | /* Get the hash of the bitmap */ |
2ace287d BM |
740 | MD(bmbits,size,md); |
741 | ||
c0722725 UM |
742 | /* Seed the random generator with the hash value */ |
743 | RAND_add(md, MD_DIGEST_LENGTH, 0); | |
2ace287d BM |
744 | } |
745 | ||
26a3a48d | 746 | OPENSSL_free(bmbits); |
2ace287d BM |
747 | } |
748 | ||
2ace287d BM |
749 | /* Clean up */ |
750 | DeleteObject(hBitmap); | |
99b00fd9 | 751 | ReleaseDC(NULL, hScrDC); |
0bf23d9b | 752 | #endif /* !OPENSSL_SYS_WINCE */ |
2ace287d BM |
753 | } |
754 | ||
2ace287d | 755 | #endif |