1 /* ====================================================================
2 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
49 * This product includes cryptographic software written by Eric Young
50 * (eay@cryptsoft.com). This product includes software written by Tim
51 * Hudson (tjh@cryptsoft.com).
54 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
55 * All rights reserved.
57 * This package is an SSL implementation written
58 * by Eric Young (eay@cryptsoft.com).
59 * The implementation was written so as to conform with Netscapes SSL.
61 * This library is free for commercial and non-commercial use as long as
62 * the following conditions are aheared to. The following conditions
63 * apply to all code found in this distribution, be it the RC4, RSA,
64 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
65 * included with this distribution is covered by the same copyright terms
66 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
68 * Copyright remains Eric Young's, and as such any Copyright notices in
69 * the code are not to be removed.
70 * If this package is used in a product, Eric Young should be given attribution
71 * as the author of the parts of the library used.
72 * This can be in the form of a textual message at program startup or
73 * in documentation (online or textual) provided with the package.
75 * Redistribution and use in source and binary forms, with or without
76 * modification, are permitted provided that the following conditions
78 * 1. Redistributions of source code must retain the copyright
79 * notice, this list of conditions and the following disclaimer.
80 * 2. Redistributions in binary form must reproduce the above copyright
81 * notice, this list of conditions and the following disclaimer in the
82 * documentation and/or other materials provided with the distribution.
83 * 3. All advertising materials mentioning features or use of this software
84 * must display the following acknowledgement:
85 * "This product includes cryptographic software written by
86 * Eric Young (eay@cryptsoft.com)"
87 * The word 'cryptographic' can be left out if the rouines from the library
88 * being used are not cryptographic related :-).
89 * 4. If you include any Windows specific code (or a derivative thereof) from
90 * the apps directory (application code) you must include an acknowledgement:
91 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
93 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
94 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
95 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
96 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
97 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
98 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
99 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
101 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
102 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
105 * The licence and distribution terms for any publically available version or
106 * derivative of this code cannot be changed. i.e. this code cannot simply be
107 * copied and put under another distribution licence
108 * [including the GNU Public Licence.]
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECDH support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
116 #include "internal/cryptlib_int.h"
117 #include <openssl/safestack.h>
119 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
120 defined(__x86_64) || defined(__x86_64__) || \
121 defined(_M_AMD64) || defined(_M_X64)
123 extern unsigned int OPENSSL_ia32cap_P[4];
124 unsigned int *OPENSSL_ia32cap_loc(void)
126 return OPENSSL_ia32cap_P;
129 # if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
131 # define OPENSSL_CPUID_SETUP
132 typedef uint64_t IA32CAP;
133 void OPENSSL_cpuid_setup(void)
135 static int trigger = 0;
136 IA32CAP OPENSSL_ia32_cpuid(unsigned int *);
144 if ((env = getenv("OPENSSL_ia32cap"))) {
145 int off = (env[0] == '~') ? 1 : 0;
147 if (!sscanf(env + off, "%I64i", &vec))
148 vec = strtoul(env + off, NULL, 0);
150 if (!sscanf(env + off, "%lli", (long long *)&vec))
151 vec = strtoul(env + off, NULL, 0);
154 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P) & ~vec;
155 else if (env[0] == ':')
156 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
158 OPENSSL_ia32cap_P[2] = 0;
159 if ((env = strchr(env, ':'))) {
162 off = (env[0] == '~') ? 1 : 0;
163 vecx = strtoul(env + off, NULL, 0);
165 OPENSSL_ia32cap_P[2] &= ~vecx;
167 OPENSSL_ia32cap_P[2] = vecx;
170 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
173 * |(1<<10) sets a reserved bit to signal that variable
174 * was initialized already... This is to avoid interference
175 * with cpuid snippets in ELF .init segment.
177 OPENSSL_ia32cap_P[0] = (unsigned int)vec | (1 << 10);
178 OPENSSL_ia32cap_P[1] = (unsigned int)(vec >> 32);
181 unsigned int OPENSSL_ia32cap_P[4];
185 unsigned int *OPENSSL_ia32cap_loc(void)
190 int OPENSSL_NONPIC_relocated = 0;
191 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
192 void OPENSSL_cpuid_setup(void)
197 #if defined(_WIN32) && !defined(__CYGWIN__)
201 # if defined(_UNICODE) || defined(__UNICODE__)
202 # define _vsntprintf _vsnwprintf
204 # define _vsntprintf _vsnprintf
208 # define alloca _alloca
211 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
212 int OPENSSL_isservice(void)
220 } _OPENSSL_isservice = {
224 if (_OPENSSL_isservice.p == NULL) {
225 HANDLE mod = GetModuleHandle(NULL);
227 _OPENSSL_isservice.f = GetProcAddress(mod, "_OPENSSL_isservice");
228 if (_OPENSSL_isservice.p == NULL)
229 _OPENSSL_isservice.p = (void *)-1;
232 if (_OPENSSL_isservice.p != (void *)-1)
233 return (*_OPENSSL_isservice.f) ();
235 h = GetProcessWindowStation();
239 if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
240 GetLastError() != ERROR_INSUFFICIENT_BUFFER)
244 return -1; /* paranoia */
245 len++, len &= ~1; /* paranoia */
246 name = (WCHAR *)alloca(len + sizeof(WCHAR));
247 if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
250 len++, len &= ~1; /* paranoia */
251 name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
254 * This doesn't cover "interactive" services [working with real
255 * WinSta0's] nor programs started non-interactively by Task Scheduler
256 * [those are working with SAWinSta].
258 if (wcsstr(name, L"Service-0x"))
261 /* This covers all non-interactive programs such as services. */
262 if (!wcsstr(name, L"WinSta0"))
269 int OPENSSL_isservice(void)
275 void OPENSSL_showfatal(const char *fmta, ...)
280 # ifdef STD_ERROR_HANDLE /* what a dirty trick! */
283 if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
284 GetFileType(h) != FILE_TYPE_UNKNOWN) {
285 /* must be console application */
290 len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
291 WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
297 if (sizeof(TCHAR) == sizeof(char))
298 fmt = (const TCHAR *)fmta;
302 size_t len_0 = strlen(fmta) + 1, i;
305 fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
307 fmt = (const TCHAR *)L"no stack?";
310 if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
311 for (i = 0; i < len_0; i++)
312 fmtw[i] = (WCHAR)fmta[i];
313 for (i = 0; i < len_0; i++) {
317 switch (fmtw[i + 1]) {
349 fmt = (const TCHAR *)fmtw;
353 _vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
354 buf[OSSL_NELEM(buf) - 1] = _T('\0');
357 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
358 /* this -------------v--- guards NT-specific calls */
359 if (check_winnt() && OPENSSL_isservice() > 0) {
360 HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
362 if (hEventLog != NULL) {
363 const TCHAR *pmsg = buf;
365 if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
366 1, 0, &pmsg, NULL)) {
369 * We are in a situation where we tried to report a critical
370 * error and this failed for some reason. As a last resort,
371 * in debug builds, send output to the debugger or any other
372 * tool like DebugView which can monitor the output.
374 OutputDebugString(pmsg);
378 (void)DeregisterEventSource(hEventLog);
382 MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
385 void OPENSSL_showfatal(const char *fmta, ...)
387 #ifndef OPENSSL_NO_STDIO
391 vfprintf(stderr, fmta, ap);
396 int OPENSSL_isservice(void)
402 void OPENSSL_die(const char *message, const char *file, int line)
404 OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
405 file, line, message);
406 #if !defined(_WIN32) || defined(__CYGWIN__)
410 * Win32 abort() customarily shows a dialog, but we just did that...
412 # if !defined(_WIN32_WCE)
419 /* volatile unsigned char* pointers are there because
420 * 1. Accessing a variable declared volatile via a pointer
421 * that lacks a volatile qualifier causes undefined behavior.
422 * 2. When the variable itself is not volatile the compiler is
423 * not required to keep all those reads and can convert
424 * this into canonical memcmp() which doesn't read the whole block.
425 * Pointers to volatile resolve the first problem fully. The second
426 * problem cannot be resolved in any Standard-compliant way but this
427 * works the problem around. Compilers typically react to
428 * pointers to volatile by preserving the reads and writes through them.
429 * The latter is not required by the Standard if the memory pointed to
431 * Pointers themselves are volatile in the function signature to work
432 * around a subtle bug in gcc 4.6+ which causes writes through
433 * pointers to volatile to not be emitted in some rare,
434 * never needed in real life, pieces of code.
436 int CRYPTO_memcmp(const volatile void * volatile in_a,
437 const volatile void * volatile in_b,
441 const volatile unsigned char *a = in_a;
442 const volatile unsigned char *b = in_b;
445 for (i = 0; i < len; i++)