cryptlib.c
/* crypto/cryptlib.c */
/* ====================================================================
* Copyright (c) 1998-2003 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
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;
int CRYPTO_num_locks(void)
{
return CRYPTO_NUM_LOCKS;
}
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);
}
static void (*do_dynlock_cb) (int mode, int type, const char *file, int line);
void int_CRYPTO_set_do_dynlock_callback(void (*dyn_cb)
(int mode, int type,
const char *file, int line))
{
do_dynlock_cb = dyn_cb;
}
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);
}
#endif
if (type < 0) {
if (do_dynlock_cb)
do_dynlock_cb(mode, type, file, line);
} 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
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);
#endif
*pointer = ret;
CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, type, file, line);
}
return (ret);
}
#if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
defined(__INTEL__) || \
defined(__x86_64) || defined(__x86_64__) || \
defined(_M_AMD64) || defined(_M_X64)
unsigned long OPENSSL_ia32cap_P = 0;
unsigned long *OPENSSL_ia32cap_loc(void)
{
return &OPENSSL_ia32cap_P;
}
# if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
# define OPENSSL_CPUID_SETUP
void OPENSSL_cpuid_setup(void)
{
static int trigger = 0;
unsigned long OPENSSL_ia32_cpuid(void);
char *env;
if (trigger)
return;
trigger = 1;
if ((env = getenv("OPENSSL_ia32cap")))
OPENSSL_ia32cap_P = strtoul(env, NULL, 0) | (1 << 10);
else
OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid() | (1 << 10);
/*
* |(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.
*/
}
# endif
#else
unsigned long *OPENSSL_ia32cap_loc(void)
{
return NULL;
}
#endif
int OPENSSL_NONPIC_relocated = 0;
#if !defined(OPENSSL_CPUID_SETUP)
void OPENSSL_cpuid_setup(void)
{
}
#endif
#if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
# ifdef OPENSSL_FIPS
# include <tlhelp32.h>
# if defined(__GNUC__) && __GNUC__>=2
static int DllInit(void) __attribute__ ((constructor));
# elif defined(_MSC_VER)
static int DllInit(void);
# ifdef _WIN64
# pragma section(".CRT$XCU",read)
__declspec(allocate(".CRT$XCU"))
# else
# pragma data_seg(".CRT$XCU")
# endif
static int (*p) (void) = DllInit;
# pragma data_seg()
# endif
static int DllInit(void)
{
# if defined(_WIN32_WINNT)
union {
int (*f) (void);
BYTE *p;
} t = {
DllInit
};
HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
IMAGE_DOS_HEADER *dos_header;
IMAGE_NT_HEADERS *nt_headers;
MODULEENTRY32 me32 = { sizeof(me32) };
hModuleSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, 0);
if (hModuleSnap != INVALID_HANDLE_VALUE &&
Module32First(hModuleSnap, &me32))
do {
if (t.p >= me32.modBaseAddr &&
t.p < me32.modBaseAddr + me32.modBaseSize) {
dos_header = (IMAGE_DOS_HEADER *) me32.modBaseAddr;
if (dos_header->e_magic == IMAGE_DOS_SIGNATURE) {
nt_headers = (IMAGE_NT_HEADERS *)
((BYTE *) dos_header + dos_header->e_lfanew);
if (nt_headers->Signature == IMAGE_NT_SIGNATURE &&
me32.modBaseAddr !=
(BYTE *) nt_headers->OptionalHeader.ImageBase)
OPENSSL_NONPIC_relocated = 1;
}
break;
}
} while (Module32Next(hModuleSnap, &me32));
if (hModuleSnap != INVALID_HANDLE_VALUE)
CloseHandle(hModuleSnap);
# endif
OPENSSL_cpuid_setup();
return 0;
}
# else
# ifdef __CYGWIN__
/* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
# include <windows.h>
# 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
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
# include <tchar.h>
# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
int OPENSSL_isservice(void)
{
HWINSTA h;
DWORD len;
WCHAR *name;
(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 */
# ifdef _MSC_VER
name = (WCHAR *)_alloca(len + sizeof(WCHAR));
# else
name = (WCHAR *)alloca(len + sizeof(WCHAR));
# endif
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;
# ifdef _MSC_VER
fmtw = (WCHAR *)_alloca(len_0 * sizeof(WCHAR));
# else
fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
# endif
if (fmtw == NULL) {
fmt = (const TCHAR *)L"no stack?";
break;
}
# ifndef OPENSSL_NO_MULTIBYTE
if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
# endif
for (i = 0; i < len_0; i++)
fmtw[i] = (WCHAR)fmta[i];
for (i = 0; i < len_0; i++) {
if (fmtw[i] == L'%')
do {
keepgoing = 0;
switch (fmtw[i + 1]) {
case L'0':
case L'1':
case L'2':
case L'3':
case L'4':
case L'5':
case L'6':
case L'7':
case L'8':
case L'9':
case L'.':
case L'*':
case L'-':
i++;
keepgoing = 1;
break;
case L's':
fmtw[i + 1] = L'S';
break;
case L'S':
fmtw[i + 1] = L's';
break;
case L'c':
fmtw[i + 1] = L'C';
break;
case L'C':
fmtw[i + 1] = L'c';
break;
}
} while (keepgoing);
}
fmt = (const TCHAR *)fmtw;
} while (0);
va_start(ap, fmta);
_vsntprintf(buf, sizeof(buf) / sizeof(TCHAR) - 1, fmt, ap);
buf[sizeof(buf) / sizeof(TCHAR) - 1] = _T('\0');
va_end(ap);
# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
/* this -------------v--- guards NT-specific calls */
if (check_winnt() && OPENSSL_isservice() > 0) {
HANDLE h = RegisterEventSource(0, _T("OPENSSL"));
const TCHAR *pmsg = buf;
ReportEvent(h, EVENTLOG_ERROR_TYPE, 0, 0, 0, 1, 0, &pmsg, 0);
DeregisterEventSource(h);
} else
# endif
MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONSTOP);
}
#else
void OPENSSL_showfatal(const char *fmta, ...)
{
va_list ap;
va_start(ap, fmta);
vfprintf(stderr, fmta, ap);
va_end(ap);
}
int OPENSSL_isservice(void)
{
return 0;
}
#endif
void OpenSSLDie(const char *file, int line, const char *assertion)
{
OPENSSL_showfatal
("%s(%d): OpenSSL internal error, assertion failed: %s\n", file, line,
assertion);
abort();
}
void *OPENSSL_stderr(void)
{
return stderr;
}
#ifndef OPENSSL_FIPS
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;
}
#endif
