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/* crypto/cryptlib.c */
/* 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.]
*/
#include <stdio.h>
#include <string.h>
#include "cryptlib.h"
#include <openssl/crypto.h>
#if defined(WIN32) || defined(WIN16)
static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
#endif
/* 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",
"debug_malloc",
"BIO",
"gethostbyname",
"getservbyname",
"readdir",
"RSA_blinding",
"dh",
#if CRYPTO_NUM_LOCKS != 25
# error "Inconsistency between crypto.h and cryptlib.c"
#endif
};
static STACK *app_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;
int CRYPTO_get_new_lockid(char *name)
{
char *str;
int i;
/* 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) */
#if defined(WIN32) || defined(WIN16)
SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
#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)
return(0);
i=sk_push(app_locks,str);
if (!i)
Free(str);
else
i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
return(i);
}
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 WIN16
ret=(unsigned long)GetCurrentTask();
#elif defined(WIN32)
ret=(unsigned long)GetCurrentThreadId();
#elif defined(MSDOS)
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);
}
#endif
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;
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
*pointer=ret;
}
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);
}
const char *CRYPTO_get_lock_name(int type)
{
if (type < 0)
return("ERROR");
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 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);
}
#endif
#endif
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