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708dc2f1291e104fe4eef810bb8ffc1fae5b19c1
openssl/crypto/cryptlib.c
Rich Salz e0fde613ac GH102: Add volatile to CRYPTO_memcmp 
Can't hurt and seems to prevent problems from some over-aggressive
(LTO?) compilers.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 98ab57644f)
2016-01-30 14:41:23 -05:00

1031 lines
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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)
extern unsigned int OPENSSL_ia32cap_P[4];
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;
OPENSSL_ia32cap_P[2] = 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(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 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) ();
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 hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
if (hEventLog != NULL) {
const TCHAR *pmsg = buf;
if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
1, 0, &pmsg, NULL)) {
#if defined(DEBUG)
/*
* We are in a situation where we tried to report a critical
* error and this failed for some reason. As a last resort,
* in debug builds, send output to the debugger or any other
* tool like DebugView which can monitor the output.
*/
OutputDebugString(pmsg);
#endif
}
(void)DeregisterEventSource(hEventLog);
}
} else
# endif
MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
}
#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 volatile void *in_a, const volatile void *in_b, size_t len)
{
size_t i;
const volatile unsigned char *a = in_a;
const volatile 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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