crypto/cryptlib.c

   1 /* crypto/cryptlib.c */
   2 /* ====================================================================
   3  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this
  18  *    software must display the following acknowledgment:
  19  *    "This product includes software developed by the OpenSSL Project
  20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21  *
  22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23  *    endorse or promote products derived from this software without
  24  *    prior written permission. For written permission, please contact
  25  *    openssl-core@openssl.org.
  26  *
  27  * 5. Products derived from this software may not be called "OpenSSL"
  28  *    nor may "OpenSSL" appear in their names without prior written
  29  *    permission of the OpenSSL Project.
  30  *
  31  * 6. Redistributions of any form whatsoever must retain the following
  32  *    acknowledgment:
  33  *    "This product includes software developed by the OpenSSL Project
  34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47  * OF THE POSSIBILITY OF SUCH DAMAGE.
  48  * ====================================================================
  49  *
  50  * This product includes cryptographic software written by Eric Young
  51  * (eay@cryptsoft.com).  This product includes software written by Tim
  52  * Hudson (tjh@cryptsoft.com).
  53  *
  54  */
  55 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  56  * All rights reserved.
  57  *
  58  * This package is an SSL implementation written
  59  * by Eric Young (eay@cryptsoft.com).
  60  * The implementation was written so as to conform with Netscapes SSL.
  61  *
  62  * This library is free for commercial and non-commercial use as long as
  63  * the following conditions are aheared to.  The following conditions
  64  * apply to all code found in this distribution, be it the RC4, RSA,
  65  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  66  * included with this distribution is covered by the same copyright terms
  67  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  68  *
  69  * Copyright remains Eric Young's, and as such any Copyright notices in
  70  * the code are not to be removed.
  71  * If this package is used in a product, Eric Young should be given attribution
  72  * as the author of the parts of the library used.
  73  * This can be in the form of a textual message at program startup or
  74  * in documentation (online or textual) provided with the package.
  75  *
  76  * Redistribution and use in source and binary forms, with or without
  77  * modification, are permitted provided that the following conditions
  78  * are met:
  79  * 1. Redistributions of source code must retain the copyright
  80  *    notice, this list of conditions and the following disclaimer.
  81  * 2. Redistributions in binary form must reproduce the above copyright
  82  *    notice, this list of conditions and the following disclaimer in the
  83  *    documentation and/or other materials provided with the distribution.
  84  * 3. All advertising materials mentioning features or use of this software
  85  *    must display the following acknowledgement:
  86  *    "This product includes cryptographic software written by
  87  *     Eric Young (eay@cryptsoft.com)"
  88  *    The word 'cryptographic' can be left out if the rouines from the library
  89  *    being used are not cryptographic related :-).
  90  * 4. If you include any Windows specific code (or a derivative thereof) from
  91  *    the apps directory (application code) you must include an acknowledgement:
  92  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  93  *
  94  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  95  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  96  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  97  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  98  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  99  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 100  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 101  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 102  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 103  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 104  * SUCH DAMAGE.
 105  *
 106  * The licence and distribution terms for any publically available version or
 107  * derivative of this code cannot be changed.  i.e. this code cannot simply be
 108  * copied and put under another distribution licence
 109  * [including the GNU Public Licence.]
 110  */
 111 /* ====================================================================
 112  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 113  * ECDH support in OpenSSL originally developed by
 114  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 115  */
 116
 117 #include "cryptlib.h"
 118 #include <openssl/safestack.h>
 119
 120 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
 121 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
 122 #endif
 123
 124 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
 125         defined(__INTEL__) || \
 126         defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
 127
 128 extern unsigned int  OPENSSL_ia32cap_P[4];
 129 unsigned int *OPENSSL_ia32cap_loc(void) { return OPENSSL_ia32cap_P; }
 130
 131 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
 132 #define OPENSSL_CPUID_SETUP
 133 #if defined(_WIN32)
 134 typedef unsigned __int64 IA32CAP;
 135 #else
 136 typedef unsigned long long IA32CAP;
 137 #endif
 138 void OPENSSL_cpuid_setup(void)
 139 { static int trigger=0;
 140   IA32CAP OPENSSL_ia32_cpuid(unsigned int *);
 141   IA32CAP vec;
 142   char *env;
 143
 144     if (trigger)        return;
 145
 146     trigger=1;
 147     if ((env=getenv("OPENSSL_ia32cap"))) {
 148         int off = (env[0]=='~')?1:0;
 149 #if defined(_WIN32)
 150         if (!sscanf(env+off,"%I64i",&vec)) vec = strtoul(env+off,NULL,0);
 151 #else
 152         if (!sscanf(env+off,"%lli",(long long *)&vec)) vec = strtoul(env+off,NULL,0);
 153 #endif
 154         if (off) vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P)&~vec;
 155         else if (env[0]==':') vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
 156
 157         OPENSSL_ia32cap_P[2] = 0;
 158         if ((env=strchr(env,':'))) {
 159             unsigned int vecx;
 160             env++;
 161             off = (env[0]=='~')?1:0;
 162             vecx = strtoul(env+off,NULL,0);
 163             if (off)    OPENSSL_ia32cap_P[2] &= ~vecx;
 164             else        OPENSSL_ia32cap_P[2] = vecx;
 165         }
 166     }
 167     else
 168         vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
 169
 170     /*
 171      * |(1<<10) sets a reserved bit to signal that variable
 172      * was initialized already... This is to avoid interference
 173      * with cpuid snippets in ELF .init segment.
 174      */
 175     OPENSSL_ia32cap_P[0] = (unsigned int)vec|(1<<10);
 176     OPENSSL_ia32cap_P[1] = (unsigned int)(vec>>32);
 177 }
 178 #else
 179 unsigned int OPENSSL_ia32cap_P[4];
 180 #endif
 181
 182 #else
 183 unsigned int *OPENSSL_ia32cap_loc(void) { return NULL; }
 184 #endif
 185 int OPENSSL_NONPIC_relocated = 0;
 186 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
 187 void OPENSSL_cpuid_setup(void) {}
 188 #endif
 189
 190 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
 191 #ifdef __CYGWIN__
 192 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
 193 #include <windows.h>
 194 /* this has side-effect of _WIN32 getting defined, which otherwise
 195  * is mutually exclusive with __CYGWIN__... */
 196 #endif
 197
 198 /* All we really need to do is remove the 'error' state when a thread
 199  * detaches */
 200
 201 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
 202              LPVOID lpvReserved)
 203         {
 204         switch(fdwReason)
 205                 {
 206         case DLL_PROCESS_ATTACH:
 207                 OPENSSL_cpuid_setup();
 208 #if defined(_WIN32_WINNT)
 209                 {
 210                 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
 211                 IMAGE_NT_HEADERS *nt_headers;
 212
 213                 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
 214                         {
 215                         nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
 216                                                 + dos_header->e_lfanew);
 217                         if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
 218                             hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
 219                                 OPENSSL_NONPIC_relocated=1;
 220                         }
 221                 }
 222 #endif
 223                 break;
 224         case DLL_THREAD_ATTACH:
 225                 break;
 226         case DLL_THREAD_DETACH:
 227                 break;
 228         case DLL_PROCESS_DETACH:
 229                 break;
 230                 }
 231         return(TRUE);
 232         }
 233 #endif
 234
 235 #if defined(_WIN32) && !defined(__CYGWIN__)
 236 #include <tchar.h>
 237 #include <signal.h>
 238 #ifdef __WATCOMC__
 239 #if defined(_UNICODE) || defined(__UNICODE__)
 240 #define _vsntprintf _vsnwprintf
 241 #else
 242 #define _vsntprintf _vsnprintf
 243 #endif
 244 #endif
 245 #ifdef _MSC_VER
 246 #define alloca _alloca
 247 #endif
 248
 249 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 250 int OPENSSL_isservice(void)
 251 { HWINSTA h;
 252   DWORD len;
 253   WCHAR *name;
 254   static union { void *p; int (*f)(void); } _OPENSSL_isservice = { NULL };
 255
 256     if (_OPENSSL_isservice.p == NULL) {
 257         HANDLE h = GetModuleHandle(NULL);
 258         if (h != NULL)
 259             _OPENSSL_isservice.p = GetProcAddress(h,"_OPENSSL_isservice");
 260         if (_OPENSSL_isservice.p == NULL)
 261             _OPENSSL_isservice.p = (void *)-1;
 262     }
 263
 264     if (_OPENSSL_isservice.p != (void *)-1)
 265         return (*_OPENSSL_isservice.f)();
 266
 267     (void)GetDesktopWindow(); /* return value is ignored */
 268
 269     h = GetProcessWindowStation();
 270     if (h==NULL) return -1;
 271
 272     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
 273         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 274         return -1;
 275
 276     if (len>512) return -1;             /* paranoia */
 277     len++,len&=~1;                      /* paranoia */
 278     name=(WCHAR *)alloca(len+sizeof(WCHAR));
 279     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
 280         return -1;
 281
 282     len++,len&=~1;                      /* paranoia */
 283     name[len/sizeof(WCHAR)]=L'\0';      /* paranoia */
 284 #if 1
 285     /* This doesn't cover "interactive" services [working with real
 286      * WinSta0's] nor programs started non-interactively by Task
 287      * Scheduler [those are working with SAWinSta]. */
 288     if (wcsstr(name,L"Service-0x"))     return 1;
 289 #else
 290     /* This covers all non-interactive programs such as services. */
 291     if (!wcsstr(name,L"WinSta0"))       return 1;
 292 #endif
 293     else                                return 0;
 294 }
 295 #else
 296 int OPENSSL_isservice(void) { return 0; }
 297 #endif
 298
 299 void OPENSSL_showfatal (const char *fmta,...)
 300 { va_list ap;
 301   TCHAR buf[256];
 302   const TCHAR *fmt;
 303 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
 304   HANDLE h;
 305
 306     if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
 307         GetFileType(h)!=FILE_TYPE_UNKNOWN)
 308     {   /* must be console application */
 309         int   len;
 310         DWORD out;
 311
 312         va_start (ap,fmta);
 313         len=_vsnprintf((char *)buf,sizeof(buf),fmt,ap);
 314         WriteFile(h,buf,len<0?sizeof(buf):(DWORD)len,&out,NULL);
 315         va_end (ap);
 316         return;
 317     }
 318 #endif
 319
 320     if (sizeof(TCHAR)==sizeof(char))
 321         fmt=(const TCHAR *)fmta;
 322     else do
 323     { int    keepgoing;
 324       size_t len_0=strlen(fmta)+1,i;
 325       WCHAR *fmtw;
 326
 327         fmtw = (WCHAR *)alloca(len_0*sizeof(WCHAR));
 328         if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
 329
 330 #ifndef OPENSSL_NO_MULTIBYTE
 331         if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
 332 #endif
 333             for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
 334
 335         for (i=0;i<len_0;i++)
 336         {   if (fmtw[i]==L'%') do
 337             {   keepgoing=0;
 338                 switch (fmtw[i+1])
 339                 {   case L'0': case L'1': case L'2': case L'3': case L'4':
 340                     case L'5': case L'6': case L'7': case L'8': case L'9':
 341                     case L'.': case L'*':
 342                     case L'-':  i++; keepgoing=1; break;
 343                     case L's':  fmtw[i+1]=L'S';   break;
 344                     case L'S':  fmtw[i+1]=L's';   break;
 345                     case L'c':  fmtw[i+1]=L'C';   break;
 346                     case L'C':  fmtw[i+1]=L'c';   break;
 347                 }
 348             } while (keepgoing);
 349         }
 350         fmt = (const TCHAR *)fmtw;
 351     } while (0);
 352
 353     va_start (ap,fmta);
 354     _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
 355     buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
 356     va_end (ap);
 357
 358 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 359     /* this -------------v--- guards NT-specific calls */
 360     if (GetVersion() < 0x80000000 && OPENSSL_isservice() > 0)
 361     {   HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
 362         const TCHAR *pmsg=buf;
 363         ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
 364         DeregisterEventSource(h);
 365     }
 366     else
 367 #endif
 368         MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
 369 }
 370 #else
 371 void OPENSSL_showfatal (const char *fmta,...)
 372 { va_list ap;
 373
 374     va_start (ap,fmta);
 375     vfprintf (stderr,fmta,ap);
 376     va_end (ap);
 377 }
 378 int OPENSSL_isservice (void) { return 0; }
 379 #endif
 380
 381 void OpenSSLDie(const char *file,int line,const char *assertion)
 382         {
 383         OPENSSL_showfatal(
 384                 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
 385                 file,line,assertion);
 386 #if !defined(_WIN32) || defined(__CYGWIN__)
 387         abort();
 388 #else
 389         /* Win32 abort() customarily shows a dialog, but we just did that... */
 390         raise(SIGABRT);
 391         _exit(3);
 392 #endif
 393         }
 394
 395 #ifndef OPENSSL_FIPSCANISTER
 396 void *OPENSSL_stderr(void)      { return stderr; }
 397 #endif