make depend
[openssl.git] / crypto / cryptlib.c
index be83f56..6d050ff 100644 (file)
@@ -1,25 +1,78 @@
 /* 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:
  *     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 
+ * 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
  * 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 <stdio.h>
-#include <string.h>
-#include "cryptlib.h"
-#include <openssl/crypto.h>
+#include "internal/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 */
+#if defined(OPENSSL_SYS_WIN32)
+static double SSLeay_MSVC5_hack = 0.0; /* and for VC1.5 */
 #endif
 
-DECLARE_STACK_OF(CRYPTO_dynlock)
-IMPLEMENT_STACK_OF(CRYPTO_dynlock)
-
-/* real #defines in crypto.h, keep these upto date */
-static const char* lock_names[CRYPTO_NUM_LOCKS] =
-       {
-       "<<ERROR>>",
-       "err",
-       "err_hash",
-       "x509",
-       "x509_info",
-       "x509_pkey",
-       "x509_crl",
-       "x509_req",
-       "dsa",
-       "rsa",
-       "evp_pkey",
-       "x509_store",
-       "ssl_ctx",
-       "ssl_cert",
-       "ssl_session",
-       "ssl_sess_cert",
-       "ssl",
-       "rand",
-       "rand2",
-       "debug_malloc",
-       "BIO",
-       "gethostbyname",
-       "getservbyname",
-       "readdir",
-       "RSA_blinding",
-       "dh",
-       "debug_malloc2",
-       "dso",
-       "dynlock",
-       "engine",
-       "ui",
-#if CRYPTO_NUM_LOCKS != 31
-# error "Inconsistency between crypto.h and cryptlib.c"
-#endif
-       };
-
-/* This is for applications to allocate new type names in the non-dynamic
-   array of lock names.  These are numbered with positive numbers.  */
-static STACK *app_locks=NULL;
-
-/* For applications that want a more dynamic way of handling threads, the
-   following stack is used.  These are externally numbered with negative
-   numbers.  */
-static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
-
-
-static void (MS_FAR *locking_callback)(int mode,int type,
-       const char *file,int line)=NULL;
-static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
-       int type,const char *file,int line)=NULL;
-static unsigned long (MS_FAR *id_callback)(void)=NULL;
-static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
-       (const char *file,int line)=NULL;
-static void (MS_FAR *dynlock_lock_callback)(int mode,
-       struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
-static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
-       const char *file,int line)=NULL;
-
-int CRYPTO_get_new_lockid(char *name)
-       {
-       char *str;
-       int i;
-
-#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
-       /* A hack to make Visual C++ 5.0 work correctly when linking as
-        * a DLL using /MT. Without this, the application cannot use
-        * and floating point printf's.
-        * It also seems to be needed for Visual C 1.5 (win16) */
-       SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
-#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
+typedef uint64_t IA32CAP;
+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
 
-       if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
-               {
-               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       if ((str=BUF_strdup(name)) == NULL)
-               {
-               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       i=sk_push(app_locks,str);
-       if (!i)
-               OPENSSL_free(str);
-       else
-               i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
-       return(i);
-       }
-
-int CRYPTO_num_locks(void)
-       {
-       return CRYPTO_NUM_LOCKS;
-       }
-
-int CRYPTO_get_new_dynlockid(void)
-       {
-       int i = 0;
-       CRYPTO_dynlock *pointer = NULL;
-
-       if (dynlock_create_callback == NULL)
-               {
-               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
-               return(0);
-               }
-       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
-       if ((dyn_locks == NULL)
-               && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
-               {
-               CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
-               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
-
-       pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
-       if (pointer == NULL)
-               {
-               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       pointer->references = 1;
-       pointer->data = dynlock_create_callback(__FILE__,__LINE__);
-       if (pointer->data == NULL)
-               {
-               OPENSSL_free(pointer);
-               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-
-       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
-       /* First, try to find an existing empty slot */
-       i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
-       /* If there was none, push, thereby creating a new one */
-       if (i == -1)
-               i=sk_CRYPTO_dynlock_push(dyn_locks,pointer);
-       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
-
-       if (!i)
-               {
-               dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
-               OPENSSL_free(pointer);
-               }
-       else
-               i += 1; /* to avoid 0 */
-       return -i;
-       }
-
-void CRYPTO_destroy_dynlockid(int i)
-       {
-       CRYPTO_dynlock *pointer = NULL;
-       if (i)
-               i = -i-1;
-       if (dynlock_destroy_callback == NULL)
-               return;
-
-       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
-
-       if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
-               return;
-       pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
-       if (pointer != NULL)
-               {
-               --pointer->references;
-#ifdef REF_CHECK
-               if (pointer->references < 0)
-                       {
-                       fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
-                       abort();
-                       }
-               else
-#endif
-                       if (pointer->references <= 0)
-                               {
-                               sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
-                               }
-                       else
-                               pointer = NULL;
-               }
-       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
-
-       if (pointer)
-               {
-               dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
-               OPENSSL_free(pointer);
-               }
-       }
-
-struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
-       {
-       CRYPTO_dynlock *pointer = NULL;
-       if (i)
-               i = -i-1;
-
-       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
-
-       if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
-               pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
-       if (pointer)
-               pointer->references++;
-
-       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
-
-       if (pointer)
-               return pointer->data;
-       return NULL;
-       }
-
-struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
-       (const char *file,int line)
-       {
-       return(dynlock_create_callback);
-       }
-
-void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
-       struct CRYPTO_dynlock_value *l, const char *file,int line)
-       {
-       return(dynlock_lock_callback);
-       }
-
-void (*CRYPTO_get_dynlock_destroy_callback(void))
-       (struct CRYPTO_dynlock_value *l, const char *file,int line)
-       {
-       return(dynlock_destroy_callback);
-       }
-
-void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
-       (const char *file, int line))
-       {
-       dynlock_create_callback=func;
-       }
-
-void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
-       struct CRYPTO_dynlock_value *l, const char *file, int line))
-       {
-       dynlock_lock_callback=func;
-       }
-
-void CRYPTO_set_dynlock_destroy_callback(void (*func)
-       (struct CRYPTO_dynlock_value *l, const char *file, int line))
-       {
-       dynlock_destroy_callback=func;
-       }
-
-
-void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
-               int line)
-       {
-       return(locking_callback);
-       }
-
-int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
-                                         const char *file,int line)
-       {
-       return(add_lock_callback);
-       }
-
-void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
-                                             const char *file,int line))
-       {
-       locking_callback=func;
-       }
-
-void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
-                                             const char *file,int line))
-       {
-       add_lock_callback=func;
-       }
-
-unsigned long (*CRYPTO_get_id_callback(void))(void)
-       {
-       return(id_callback);
-       }
-
-void CRYPTO_set_id_callback(unsigned long (*func)(void))
-       {
-       id_callback=func;
-       }
-
-unsigned long CRYPTO_thread_id(void)
-       {
-       unsigned long ret=0;
-
-       if (id_callback == NULL)
-               {
-#ifdef OPENSSL_SYS_WIN16
-               ret=(unsigned long)GetCurrentTask();
-#elif defined(OPENSSL_SYS_WIN32)
-               ret=(unsigned long)GetCurrentThreadId();
-#elif defined(GETPID_IS_MEANINGLESS)
-               ret=1L;
 #else
-               ret=(unsigned long)getpid();
-#endif
-               }
-       else
-               ret=id_callback();
-       return(ret);
-       }
-
-void CRYPTO_lock(int mode, int type, const char *file, int line)
-       {
-#ifdef LOCK_DEBUG
-               {
-               char *rw_text,*operation_text;
-
-               if (mode & CRYPTO_LOCK)
-                       operation_text="lock  ";
-               else if (mode & CRYPTO_UNLOCK)
-                       operation_text="unlock";
-               else
-                       operation_text="ERROR ";
-
-               if (mode & CRYPTO_READ)
-                       rw_text="r";
-               else if (mode & CRYPTO_WRITE)
-                       rw_text="w";
-               else
-                       rw_text="ERROR";
-
-               fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
-                       CRYPTO_thread_id(), rw_text, operation_text,
-                       CRYPTO_get_lock_name(type), file, line);
-               }
+unsigned int *OPENSSL_ia32cap_loc(void)
+{
+    return NULL;
+}
 #endif
-       if (type < 0)
-               {
-               struct CRYPTO_dynlock_value *pointer
-                       = CRYPTO_get_dynlock_value(type);
-
-               if (pointer && dynlock_lock_callback)
-                       {
-                       dynlock_lock_callback(mode, pointer, file, line);
-                       }
-
-               CRYPTO_destroy_dynlockid(type);
-               }
-       else
-               if (locking_callback != NULL)
-                       locking_callback(mode,type,file,line);
-       }
-
-int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
-            int line)
-       {
-       int ret = 0;
-
-       if (add_lock_callback != NULL)
-               {
-#ifdef LOCK_DEBUG
-               int before= *pointer;
+int OPENSSL_NONPIC_relocated = 0;
+#if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
+void OPENSSL_cpuid_setup(void)
+{
+}
 #endif
 
-               ret=add_lock_callback(pointer,amount,type,file,line);
-#ifdef LOCK_DEBUG
-               fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
-                       CRYPTO_thread_id(),
-                       before,amount,ret,
-                       CRYPTO_get_lock_name(type),
-                       file,line);
-#endif
-               }
-       else
-               {
-               CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
-
-               ret= *pointer+amount;
-#ifdef LOCK_DEBUG
-               fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
-                       CRYPTO_thread_id(),
-                       *pointer,amount,ret,
-                       CRYPTO_get_lock_name(type),
-                       file,line);
+#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
-               *pointer=ret;
-               CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
-               }
-       return(ret);
-       }
-
-const char *CRYPTO_get_lock_name(int type)
-       {
-       if (type < 0)
-               return("dynamic");
-       else if (type < CRYPTO_NUM_LOCKS)
-               return(lock_names[type]);
-       else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
-               return("ERROR");
-       else
-               return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
-       }
-
-#ifdef _DLL
-#ifdef OPENSSL_SYS_WIN32
-
-/* All we really need to do is remove the 'error' state when a thread
- * detaches */
-
-BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
-            LPVOID lpvReserved)
-       {
-       switch(fdwReason)
-               {
-       case DLL_PROCESS_ATTACH:
-               break;
-       case DLL_THREAD_ATTACH:
-               break;
-       case DLL_THREAD_DETACH:
-               ERR_remove_state(0);
-               break;
-       case DLL_PROCESS_DETACH:
-               break;
-               }
-       return(TRUE);
-       }
+
+#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) ();
+
+    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;
+            }
+            if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
+                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, OSSL_NELEM(buf) - 1, fmt, ap);
+    buf[OSSL_NELEM(buf) - 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
+}
+
+void *OPENSSL_stderr(void)
+{
+    return stderr;
+}
+
+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;
+}