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openssl/crypto/cryptlib.c

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/* crypto/cryptlib.c */
/* ====================================================================
* Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECDH support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#include "cryptlib.h"
#include <openssl/safestack.h>
#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
#endif
#if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
defined(__INTEL__) || \
defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
extern unsigned int OPENSSL_ia32cap_P[4];
unsigned int *OPENSSL_ia32cap_loc(void) { return OPENSSL_ia32cap_P; }
#if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
#define OPENSSL_CPUID_SETUP
#if defined(_WIN32)
typedef unsigned __int64 IA32CAP;
#else
typedef unsigned long long IA32CAP;
#endif
void OPENSSL_cpuid_setup(void)
{ static int trigger=0;
IA32CAP OPENSSL_ia32_cpuid(unsigned int *);
IA32CAP vec;
char *env;
if (trigger) return;
trigger=1;
if ((env=getenv("OPENSSL_ia32cap"))) {
int off = (env[0]=='~')?1:0;
#if defined(_WIN32)
if (!sscanf(env+off,"%I64i",&vec)) vec = strtoul(env+off,NULL,0);
#else
if (!sscanf(env+off,"%lli",(long long *)&vec)) vec = strtoul(env+off,NULL,0);
#endif
if (off) vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P)&~vec;
else if (env[0]==':') vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
OPENSSL_ia32cap_P[2] = 0;
if ((env=strchr(env,':'))) {
unsigned int vecx;
env++;
off = (env[0]=='~')?1:0;
vecx = strtoul(env+off,NULL,0);
if (off) OPENSSL_ia32cap_P[2] &= ~vecx;
else OPENSSL_ia32cap_P[2] = vecx;
}
}
else
vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
/*
* |(1<<10) sets a reserved bit to signal that variable
* was initialized already... This is to avoid interference
* with cpuid snippets in ELF .init segment.
*/
OPENSSL_ia32cap_P[0] = (unsigned int)vec|(1<<10);
OPENSSL_ia32cap_P[1] = (unsigned int)(vec>>32);
}
#else
unsigned int OPENSSL_ia32cap_P[4];
#endif
#else
unsigned int *OPENSSL_ia32cap_loc(void) { return NULL; }
#endif
int OPENSSL_NONPIC_relocated = 0;
#if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
void OPENSSL_cpuid_setup(void) {}
#endif
#if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
#ifdef __CYGWIN__
/* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
#include <windows.h>
/* this has side-effect of _WIN32 getting defined, which otherwise
* is mutually exclusive with __CYGWIN__... */
#endif
/* All we really need to do is remove the 'error' state when a thread
* detaches */
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
LPVOID lpvReserved)
{
switch(fdwReason)
{
case DLL_PROCESS_ATTACH:
OPENSSL_cpuid_setup();
#if defined(_WIN32_WINNT)
{
IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
IMAGE_NT_HEADERS *nt_headers;
if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
{
nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
+ dos_header->e_lfanew);
if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
OPENSSL_NONPIC_relocated=1;
}
}
#endif
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
case DLL_PROCESS_DETACH:
break;
}
return(TRUE);
}
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <tchar.h>
#include <signal.h>
#ifdef __WATCOMC__
#if defined(_UNICODE) || defined(__UNICODE__)
#define _vsntprintf _vsnwprintf
#else
#define _vsntprintf _vsnprintf
#endif
#endif
#ifdef _MSC_VER
#define alloca _alloca
#endif
#if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
int OPENSSL_isservice(void)
{ HWINSTA h;
DWORD len;
WCHAR *name;
static union { void *p; int (*f)(void); } _OPENSSL_isservice = { NULL };
if (_OPENSSL_isservice.p == NULL) {
HANDLE h = GetModuleHandle(NULL);
if (h != NULL)
_OPENSSL_isservice.p = GetProcAddress(h,"_OPENSSL_isservice");
if (_OPENSSL_isservice.p == NULL)
_OPENSSL_isservice.p = (void *)-1;
}
if (_OPENSSL_isservice.p != (void *)-1)
return (*_OPENSSL_isservice.f)();
(void)GetDesktopWindow(); /* return value is ignored */
h = GetProcessWindowStation();
if (h==NULL) return -1;
if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
GetLastError() != ERROR_INSUFFICIENT_BUFFER)
return -1;
if (len>512) return -1; /* paranoia */
len++,len&=~1; /* paranoia */
name=(WCHAR *)alloca(len+sizeof(WCHAR));
if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
return -1;
len++,len&=~1; /* paranoia */
name[len/sizeof(WCHAR)]=L'\0'; /* paranoia */
#if 1
/* This doesn't cover "interactive" services [working with real
* WinSta0's] nor programs started non-interactively by Task
* Scheduler [those are working with SAWinSta]. */
if (wcsstr(name,L"Service-0x")) return 1;
#else
/* This covers all non-interactive programs such as services. */
if (!wcsstr(name,L"WinSta0")) return 1;
#endif
else return 0;
}
#else
int OPENSSL_isservice(void) { return 0; }
#endif
void OPENSSL_showfatal (const char *fmta,...)
{ va_list ap;
TCHAR buf[256];
const TCHAR *fmt;
#ifdef STD_ERROR_HANDLE /* what a dirty trick! */
HANDLE h;
if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
GetFileType(h)!=FILE_TYPE_UNKNOWN)
{ /* must be console application */
int len;
DWORD out;
va_start (ap,fmta);
len=_vsnprintf((char *)buf,sizeof(buf),fmta,ap);
WriteFile(h,buf,len<0?sizeof(buf):(DWORD)len,&out,NULL);
va_end (ap);
return;
}
#endif
if (sizeof(TCHAR)==sizeof(char))
fmt=(const TCHAR *)fmta;
else do
{ int keepgoing;
size_t len_0=strlen(fmta)+1,i;
WCHAR *fmtw;
fmtw = (WCHAR *)alloca(len_0*sizeof(WCHAR));
if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
#ifndef OPENSSL_NO_MULTIBYTE
if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
#endif
for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
for (i=0;i<len_0;i++)
{ if (fmtw[i]==L'%') do
{ keepgoing=0;
switch (fmtw[i+1])
{ case L'0': case L'1': case L'2': case L'3': case L'4':
case L'5': case L'6': case L'7': case L'8': case L'9':
case L'.': case L'*':
case L'-': i++; keepgoing=1; break;
case L's': fmtw[i+1]=L'S'; break;
case L'S': fmtw[i+1]=L's'; break;
case L'c': fmtw[i+1]=L'C'; break;
case L'C': fmtw[i+1]=L'c'; break;
}
} while (keepgoing);
}
fmt = (const TCHAR *)fmtw;
} while (0);
va_start (ap,fmta);
_vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
va_end (ap);
#if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
/* this -------------v--- guards NT-specific calls */
if (check_winnt() && OPENSSL_isservice() > 0)
{ HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
const TCHAR *pmsg=buf;
ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
DeregisterEventSource(h);
}
else
#endif
MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
}
#else
void OPENSSL_showfatal (const char *fmta,...)
{ va_list ap;
va_start (ap,fmta);
vfprintf (stderr,fmta,ap);
va_end (ap);
}
int OPENSSL_isservice (void) { return 0; }
#endif
void OpenSSLDie(const char *file,int line,const char *assertion)
{
OPENSSL_showfatal(
"%s(%d): OpenSSL internal error, assertion failed: %s\n",
file,line,assertion);
#if !defined(_WIN32) || defined(__CYGWIN__)
abort();
#else
/* Win32 abort() customarily shows a dialog, but we just did that... */
#if !defined(_WIN32_WCE)
raise(SIGABRT);
#endif
_exit(3);
#endif
}
#ifndef OPENSSL_FIPSCANISTER
void *OPENSSL_stderr(void) { return stderr; }
#endif
int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len)
{
size_t i;
const unsigned char *a = in_a;
const unsigned char *b = in_b;
unsigned char x = 0;
for (i = 0; i < len; i++)
x |= a[i] ^ b[i];
return x;
}
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