2 * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECDH support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
16 #include "internal/cryptlib_int.h"
17 #include <openssl/safestack.h>
19 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
20 defined(__x86_64) || defined(__x86_64__) || \
21 defined(_M_AMD64) || defined(_M_X64)
23 extern unsigned int OPENSSL_ia32cap_P[4];
25 # if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
27 # define OPENSSL_CPUID_SETUP
28 typedef uint64_t IA32CAP;
29 void OPENSSL_cpuid_setup(void)
31 static int trigger = 0;
32 IA32CAP OPENSSL_ia32_cpuid(unsigned int *);
40 if ((env = getenv("OPENSSL_ia32cap"))) {
41 int off = (env[0] == '~') ? 1 : 0;
43 if (!sscanf(env + off, "%I64i", &vec))
44 vec = strtoul(env + off, NULL, 0);
46 if (!sscanf(env + off, "%lli", (long long *)&vec))
47 vec = strtoul(env + off, NULL, 0);
50 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P) & ~vec;
51 else if (env[0] == ':')
52 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
54 OPENSSL_ia32cap_P[2] = 0;
55 if ((env = strchr(env, ':'))) {
58 off = (env[0] == '~') ? 1 : 0;
59 vecx = strtoul(env + off, NULL, 0);
61 OPENSSL_ia32cap_P[2] &= ~vecx;
63 OPENSSL_ia32cap_P[2] = vecx;
66 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
69 * |(1<<10) sets a reserved bit to signal that variable
70 * was initialized already... This is to avoid interference
71 * with cpuid snippets in ELF .init segment.
73 OPENSSL_ia32cap_P[0] = (unsigned int)vec | (1 << 10);
74 OPENSSL_ia32cap_P[1] = (unsigned int)(vec >> 32);
77 unsigned int OPENSSL_ia32cap_P[4];
80 int OPENSSL_NONPIC_relocated = 0;
81 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
82 void OPENSSL_cpuid_setup(void)
87 #if defined(_WIN32) && !defined(__CYGWIN__)
91 # if defined(_UNICODE) || defined(__UNICODE__)
92 # define _vsntprintf _vsnwprintf
94 # define _vsntprintf _vsnprintf
98 # define alloca _alloca
101 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
102 int OPENSSL_isservice(void)
110 } _OPENSSL_isservice = {
114 if (_OPENSSL_isservice.p == NULL) {
115 HANDLE mod = GetModuleHandle(NULL);
117 _OPENSSL_isservice.f = GetProcAddress(mod, "_OPENSSL_isservice");
118 if (_OPENSSL_isservice.p == NULL)
119 _OPENSSL_isservice.p = (void *)-1;
122 if (_OPENSSL_isservice.p != (void *)-1)
123 return (*_OPENSSL_isservice.f) ();
125 h = GetProcessWindowStation();
129 if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
130 GetLastError() != ERROR_INSUFFICIENT_BUFFER)
134 return -1; /* paranoia */
135 len++, len &= ~1; /* paranoia */
136 name = (WCHAR *)alloca(len + sizeof(WCHAR));
137 if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
140 len++, len &= ~1; /* paranoia */
141 name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
144 * This doesn't cover "interactive" services [working with real
145 * WinSta0's] nor programs started non-interactively by Task Scheduler
146 * [those are working with SAWinSta].
148 if (wcsstr(name, L"Service-0x"))
151 /* This covers all non-interactive programs such as services. */
152 if (!wcsstr(name, L"WinSta0"))
159 int OPENSSL_isservice(void)
165 void OPENSSL_showfatal(const char *fmta, ...)
171 * First check if it's a console application, in which case the
172 * error message would be printed to standard error.
173 * Windows CE does not have a concept of a console application,
174 * so we need to guard the check.
176 # ifdef STD_ERROR_HANDLE
179 if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
180 GetFileType(h) != FILE_TYPE_UNKNOWN) {
181 /* must be console application */
186 len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
187 WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
193 if (sizeof(TCHAR) == sizeof(char))
194 fmt = (const TCHAR *)fmta;
198 size_t len_0 = strlen(fmta) + 1, i;
201 fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
203 fmt = (const TCHAR *)L"no stack?";
206 if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
207 for (i = 0; i < len_0; i++)
208 fmtw[i] = (WCHAR)fmta[i];
209 for (i = 0; i < len_0; i++) {
213 switch (fmtw[i + 1]) {
245 fmt = (const TCHAR *)fmtw;
249 _vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
250 buf[OSSL_NELEM(buf) - 1] = _T('\0');
253 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
254 /* this -------------v--- guards NT-specific calls */
255 if (check_winnt() && OPENSSL_isservice() > 0) {
256 HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
258 if (hEventLog != NULL) {
259 const TCHAR *pmsg = buf;
261 if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
262 1, 0, &pmsg, NULL)) {
265 * We are in a situation where we tried to report a critical
266 * error and this failed for some reason. As a last resort,
267 * in debug builds, send output to the debugger or any other
268 * tool like DebugView which can monitor the output.
270 OutputDebugString(pmsg);
274 (void)DeregisterEventSource(hEventLog);
278 MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
281 void OPENSSL_showfatal(const char *fmta, ...)
283 #ifndef OPENSSL_NO_STDIO
287 vfprintf(stderr, fmta, ap);
292 int OPENSSL_isservice(void)
298 void OPENSSL_die(const char *message, const char *file, int line)
300 OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
301 file, line, message);
302 #if !defined(_WIN32) || defined(__CYGWIN__)
306 * Win32 abort() customarily shows a dialog, but we just did that...
308 # if !defined(_WIN32_WCE)
315 #if !defined(OPENSSL_CPUID_OBJ)
317 * The volatile is used to to ensure that the compiler generates code that reads
318 * all values from the array and doesn't try to optimize this away. The standard
319 * doesn't actually require this behavior if the original data pointed to is
320 * not volatile, but compilers do this in practice anyway.
322 * There are also assembler versions of this function.
324 int CRYPTO_memcmp(const void * in_a, const void * in_b, size_t len)
327 const volatile unsigned char *a = in_a;
328 const volatile unsigned char *b = in_b;
331 for (i = 0; i < len; i++)