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openssl/crypto/cryptlib.c
Ben Laurie 2ee798880a Add and use a constant-time memcmp. 
This change adds CRYPTO_memcmp, which compares two vectors of bytes in
an amount of time that's independent of their contents. It also changes
several MAC compares in the code to use this over the standard memcmp,
which may leak information about the size of a matching prefix.
2013-01-28 17:30:38 +00:00

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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
DECLARE_STACK_OF(CRYPTO_dynlock)
/* real #defines in crypto.h, keep these upto date */
static const char* const lock_names[CRYPTO_NUM_LOCKS] =
{
"<<ERROR>>",
"err",
"ex_data",
"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",
"ssl_method",
"rand",
"rand2",
"debug_malloc",
"BIO",
"gethostbyname",
"getservbyname",
"readdir",
"RSA_blinding",
"dh",
"debug_malloc2",
"dso",
"dynlock",
"engine",
"ui",
"ecdsa",
"ec",
"ecdh",
"bn",
"ec_pre_comp",
"store",
"comp",
"fips",
"fips2",
#if CRYPTO_NUM_LOCKS != 41
# 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_OF(OPENSSL_STRING) *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)=0;
static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
int type,const char *file,int line)=0;
#ifndef OPENSSL_NO_DEPRECATED
static unsigned long (MS_FAR *id_callback)(void)=0;
#endif
static void (MS_FAR *threadid_callback)(CRYPTO_THREADID *)=0;
static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
(const char *file,int line)=0;
static void (MS_FAR *dynlock_lock_callback)(int mode,
struct CRYPTO_dynlock_value *l, const char *file,int line)=0;
static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
const char *file,int line)=0;
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
* any 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 ((app_locks == NULL) && ((app_locks=sk_OPENSSL_STRING_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_OPENSSL_STRING_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)
/* Since sk_push() returns the number of items on the
stack, not the location of the pushed item, we need
to transform the returned number into a position,
by decreasing it. */
i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
else
/* If we found a place with a NULL pointer, put our pointer
in it. */
(void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
if (i == -1)
{
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))
{
CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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)
{
(void)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))
{
/* Calling this here ensures initialisation before any threads
* are started.
*/
OPENSSL_init();
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;
}
/* the memset() here and in set_pointer() seem overkill, but for the sake of
* CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause two
* "equal" THREADID structs to not be memcmp()-identical. */
void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
{
memset(id, 0, sizeof(*id));
id->val = val;
}
static const unsigned char hash_coeffs[] = { 3, 5, 7, 11, 13, 17, 19, 23 };
void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr)
{
unsigned char *dest = (void *)&id->val;
unsigned int accum = 0;
unsigned char dnum = sizeof(id->val);
memset(id, 0, sizeof(*id));
id->ptr = ptr;
if (sizeof(id->val) >= sizeof(id->ptr))
{
/* 'ptr' can be embedded in 'val' without loss of uniqueness */
id->val = (unsigned long)id->ptr;
return;
}
/* hash ptr ==> val. Each byte of 'val' gets the mod-256 total of a
* linear function over the bytes in 'ptr', the co-efficients of which
* are a sequence of low-primes (hash_coeffs is an 8-element cycle) -
* the starting prime for the sequence varies for each byte of 'val'
* (unique polynomials unless pointers are >64-bit). For added spice,
* the totals accumulate rather than restarting from zero, and the index
* of the 'val' byte is added each time (position dependence). If I was
* a black-belt, I'd scan big-endian pointers in reverse to give
* low-order bits more play, but this isn't crypto and I'd prefer nobody
* mistake it as such. Plus I'm lazy. */
while (dnum--)
{
const unsigned char *src = (void *)&id->ptr;
unsigned char snum = sizeof(id->ptr);
while (snum--)
accum += *(src++) * hash_coeffs[(snum + dnum) & 7];
accum += dnum;
*(dest++) = accum & 255;
}
}
int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *))
{
if (threadid_callback)
return 0;
threadid_callback = func;
return 1;
}
void (*CRYPTO_THREADID_get_callback(void))(CRYPTO_THREADID *)
{
return threadid_callback;
}
void CRYPTO_THREADID_current(CRYPTO_THREADID *id)
{
if (threadid_callback)
{
threadid_callback(id);
return;
}
#ifndef OPENSSL_NO_DEPRECATED
/* If the deprecated callback was set, fall back to that */
if (id_callback)
{
CRYPTO_THREADID_set_numeric(id, id_callback());
return;
}
#endif
/* Else pick a backup */
#ifdef OPENSSL_SYS_WIN16
CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentTask());
#elif defined(OPENSSL_SYS_WIN32)
CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
#elif defined(OPENSSL_SYS_BEOS)
CRYPTO_THREADID_set_numeric(id, (unsigned long)find_thread(NULL));
#else
/* For everything else, default to using the address of 'errno' */
CRYPTO_THREADID_set_pointer(id, (void*)&errno);
#endif
}
int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b)
{
return memcmp(a, b, sizeof(*a));
}
void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src)
{
memcpy(dest, src, sizeof(*src));
}
unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
{
return id->val;
}
#ifndef OPENSSL_NO_DEPRECATED
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;
#elif defined(OPENSSL_SYS_BEOS)
ret=(unsigned long)find_thread(NULL);
#else
ret=(unsigned long)getpid();
#endif
}
else
ret=id_callback();
return(ret);
}
#endif
void CRYPTO_lock(int mode, int type, const char *file, int line)
{
#ifdef LOCK_DEBUG
{
CRYPTO_THREADID id;
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";
CRYPTO_THREADID_current(&id);
fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
CRYPTO_THREADID_hash(&id), rw_text, operation_text,
CRYPTO_get_lock_name(type), file, line);
}
#endif
if (type < 0)
{
if (dynlock_lock_callback != NULL)
{
struct CRYPTO_dynlock_value *pointer
= CRYPTO_get_dynlock_value(type);
OPENSSL_assert(pointer != NULL);
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;
#endif
ret=add_lock_callback(pointer,amount,type,file,line);
#ifdef LOCK_DEBUG
{
CRYPTO_THREADID id;
CRYPTO_THREADID_current(&id);
fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
CRYPTO_THREADID_hash(&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
{
CRYPTO_THREADID id;
CRYPTO_THREADID_current(&id);
fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
CRYPTO_THREADID_hash(&id),
*pointer,amount,ret,
CRYPTO_get_lock_name(type),
file,line);
}
#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_OPENSSL_STRING_num(app_locks))
return("ERROR");
else
return(sk_OPENSSL_STRING_value(app_locks,type-CRYPTO_NUM_LOCKS));
}
#if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
defined(__INTEL__) || \
defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
unsigned int OPENSSL_ia32cap_P[2];
unsigned long *OPENSSL_ia32cap_loc(void)
{ if (sizeof(long)==4)
/*
* If 32-bit application pulls address of OPENSSL_ia32cap_P[0]
* clear second element to maintain the illusion that vector
* is 32-bit.
*/
OPENSSL_ia32cap_P[1]=0;
return (unsigned long *)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(void);
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()&~vec;
}
else
vec = OPENSSL_ia32_cpuid();
/*
* |(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);
}
#endif
#else
unsigned long *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 */
va_start (ap,fmta);
vfprintf (stderr,fmta,ap);
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 (GetVersion() < 0x80000000 && 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... */
raise(SIGABRT);
_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;
}
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