2 * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib_int.h"
12 #include <openssl/safestack.h>
14 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
15 defined(__x86_64) || defined(__x86_64__) || \
16 defined(_M_AMD64) || defined(_M_X64)
18 extern unsigned int OPENSSL_ia32cap_P[4];
20 # if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
22 # define OPENSSL_CPUID_SETUP
23 typedef uint64_t IA32CAP;
24 void OPENSSL_cpuid_setup(void)
26 static int trigger = 0;
27 IA32CAP OPENSSL_ia32_cpuid(unsigned int *);
35 if ((env = getenv("OPENSSL_ia32cap"))) {
36 int off = (env[0] == '~') ? 1 : 0;
38 if (!sscanf(env + off, "%I64i", &vec))
39 vec = strtoul(env + off, NULL, 0);
41 if (!sscanf(env + off, "%lli", (long long *)&vec))
42 vec = strtoul(env + off, NULL, 0);
45 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P) & ~vec;
46 else if (env[0] == ':')
47 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
49 OPENSSL_ia32cap_P[2] = 0;
50 if ((env = strchr(env, ':'))) {
53 off = (env[0] == '~') ? 1 : 0;
54 vecx = strtoul(env + off, NULL, 0);
56 OPENSSL_ia32cap_P[2] &= ~vecx;
58 OPENSSL_ia32cap_P[2] = vecx;
61 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
64 * |(1<<10) sets a reserved bit to signal that variable
65 * was initialized already... This is to avoid interference
66 * with cpuid snippets in ELF .init segment.
68 OPENSSL_ia32cap_P[0] = (unsigned int)vec | (1 << 10);
69 OPENSSL_ia32cap_P[1] = (unsigned int)(vec >> 32);
72 unsigned int OPENSSL_ia32cap_P[4];
75 int OPENSSL_NONPIC_relocated = 0;
76 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
77 void OPENSSL_cpuid_setup(void)
82 #if defined(_WIN32) && !defined(__CYGWIN__)
86 # if defined(_UNICODE) || defined(__UNICODE__)
87 # define _vsntprintf _vsnwprintf
89 # define _vsntprintf _vsnprintf
93 # define alloca _alloca
96 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
97 int OPENSSL_isservice(void)
105 } _OPENSSL_isservice = {
109 if (_OPENSSL_isservice.p == NULL) {
110 HANDLE mod = GetModuleHandle(NULL);
112 _OPENSSL_isservice.f = GetProcAddress(mod, "_OPENSSL_isservice");
113 if (_OPENSSL_isservice.p == NULL)
114 _OPENSSL_isservice.p = (void *)-1;
117 if (_OPENSSL_isservice.p != (void *)-1)
118 return (*_OPENSSL_isservice.f) ();
120 h = GetProcessWindowStation();
124 if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
125 GetLastError() != ERROR_INSUFFICIENT_BUFFER)
129 return -1; /* paranoia */
130 len++, len &= ~1; /* paranoia */
131 name = (WCHAR *)alloca(len + sizeof(WCHAR));
132 if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
135 len++, len &= ~1; /* paranoia */
136 name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
139 * This doesn't cover "interactive" services [working with real
140 * WinSta0's] nor programs started non-interactively by Task Scheduler
141 * [those are working with SAWinSta].
143 if (wcsstr(name, L"Service-0x"))
146 /* This covers all non-interactive programs such as services. */
147 if (!wcsstr(name, L"WinSta0"))
154 int OPENSSL_isservice(void)
160 void OPENSSL_showfatal(const char *fmta, ...)
166 * First check if it's a console application, in which case the
167 * error message would be printed to standard error.
168 * Windows CE does not have a concept of a console application,
169 * so we need to guard the check.
171 # ifdef STD_ERROR_HANDLE
174 if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
175 GetFileType(h) != FILE_TYPE_UNKNOWN) {
176 /* must be console application */
181 len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
182 WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
188 if (sizeof(TCHAR) == sizeof(char))
189 fmt = (const TCHAR *)fmta;
193 size_t len_0 = strlen(fmta) + 1, i;
196 fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
198 fmt = (const TCHAR *)L"no stack?";
201 if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
202 for (i = 0; i < len_0; i++)
203 fmtw[i] = (WCHAR)fmta[i];
204 for (i = 0; i < len_0; i++) {
208 switch (fmtw[i + 1]) {
240 fmt = (const TCHAR *)fmtw;
244 _vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
245 buf[OSSL_NELEM(buf) - 1] = _T('\0');
248 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
249 /* this -------------v--- guards NT-specific calls */
250 if (check_winnt() && OPENSSL_isservice() > 0) {
251 HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
253 if (hEventLog != NULL) {
254 const TCHAR *pmsg = buf;
256 if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
257 1, 0, &pmsg, NULL)) {
260 * We are in a situation where we tried to report a critical
261 * error and this failed for some reason. As a last resort,
262 * in debug builds, send output to the debugger or any other
263 * tool like DebugView which can monitor the output.
265 OutputDebugString(pmsg);
269 (void)DeregisterEventSource(hEventLog);
273 MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
276 void OPENSSL_showfatal(const char *fmta, ...)
278 #ifndef OPENSSL_NO_STDIO
282 vfprintf(stderr, fmta, ap);
287 int OPENSSL_isservice(void)
293 void OPENSSL_die(const char *message, const char *file, int line)
295 OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
296 file, line, message);
297 #if !defined(_WIN32) || defined(__CYGWIN__)
301 * Win32 abort() customarily shows a dialog, but we just did that...
303 # if !defined(_WIN32_WCE)
310 #if !defined(OPENSSL_CPUID_OBJ)
312 * The volatile is used to to ensure that the compiler generates code that reads
313 * all values from the array and doesn't try to optimize this away. The standard
314 * doesn't actually require this behavior if the original data pointed to is
315 * not volatile, but compilers do this in practice anyway.
317 * There are also assembler versions of this function.
319 # undef CRYPTO_memcmp
320 int CRYPTO_memcmp(const void * in_a, const void * in_b, size_t len)
323 const volatile unsigned char *a = in_a;
324 const volatile unsigned char *b = in_b;
327 for (i = 0; i < len; i++)