[thirdparty/openssl.git] / crypto / cryptlib.c

/* 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 "crypto.h"
#include "date.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 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",
	"rand",
	"debug_malloc",
	"BIO",
	"bio_gethostbyname",
	"RSA_blinding",
	};

static STACK *app_locks=NULL;

#ifndef NOPROTO
static void (MS_FAR *locking_callback)(int mode,int type,
	char *file,int line)=NULL;
static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
	int type,char *file,int line)=NULL;
static unsigned long (MS_FAR *id_callback)(void)=NULL;
#else
static void (MS_FAR *locking_callback)()=NULL;
static int (MS_FAR *add_lock_callback)()=NULL;
static unsigned long (MS_FAR *id_callback)()=NULL;
#endif

int CRYPTO_get_new_lockid(name)
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)
		if ((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);
	}

void (*CRYPTO_get_locking_callback(P_V))(P_I_I_P_I)
	{
	return(locking_callback);
	}

int (*CRYPTO_get_add_lock_callback(P_V))(P_IP_I_I_P_I)
	{
	return(add_lock_callback);
	}

void CRYPTO_set_locking_callback(func)
void (*func)(P_I_I_P_I);
	{
	locking_callback=func;
	}

void CRYPTO_set_add_lock_callback(func)
int (*func)(P_IP_I_I_P_I);
	{
	add_lock_callback=func;
	}

unsigned long (*CRYPTO_get_id_callback(P_V))(P_V)
	{
	return(id_callback);
	}

void CRYPTO_set_id_callback(func)
unsigned long (*func)(P_V);
	{
	id_callback=func;
	}

unsigned long CRYPTO_thread_id()
	{
	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(mode,type,file,line)
int mode;
int type;
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(pointer,amount,type,file,line)
int *pointer;
int amount;
int type;
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);
	}

char *CRYPTO_get_lock_name(type)
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(hinstDLL,fdwReason,lpvReserved)
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
Commit	Line	Data
d02b48c6	1	/* crypto/cryptlib.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include <string.h>
	61	#include "cryptlib.h"
	62	#include "crypto.h"
	63	#include "date.h"
	64
58964a49 RE	65	#if defined(WIN32) \|\| defined(WIN16)
	66	static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
	67	#endif
	68
d02b48c6 RE	69	/* real #defines in crypto.h, keep these upto date */
	70	static char* lock_names[CRYPTO_NUM_LOCKS] =
	71	{
	72	"<<ERROR>>",
	73	"err",
	74	"err_hash",
	75	"x509",
	76	"x509_info",
	77	"x509_pkey",
	78	"x509_crl",
	79	"x509_req",
	80	"dsa",
	81	"rsa",
	82	"evp_pkey",
	83	"x509_store",
	84	"ssl_ctx",
	85	"ssl_cert",
	86	"ssl_session",
	87	"ssl",
	88	"rand",
	89	"debug_malloc",
d02b48c6	90	"BIO",
58964a49 RE	91	"bio_gethostbyname",
58964a49 RE	92	"RSA_blinding",
d02b48c6 RE	93	};
d02b48c6 RE	94
58964a49 RE	95	static STACK *app_locks=NULL;
58964a49 RE	96
d02b48c6 RE	97	#ifndef NOPROTO
	98	static void (MS_FAR *locking_callback)(int mode,int type,
	99	char *file,int line)=NULL;
	100	static int (MS_FAR add_lock_callback)(int pointer,int amount,
	101	int type,char *file,int line)=NULL;
	102	static unsigned long (MS_FAR *id_callback)(void)=NULL;
	103	#else
	104	static void (MS_FAR *locking_callback)()=NULL;
	105	static int (MS_FAR *add_lock_callback)()=NULL;
	106	static unsigned long (MS_FAR *id_callback)()=NULL;
	107	#endif
	108
58964a49 RE	109	int CRYPTO_get_new_lockid(name)
	110	char *name;
	111	{
	112	char *str;
	113	int i;
	114
	115	/* A hack to make Visual C++ 5.0 work correctly when linking as
	116	* a DLL using /MT. Without this, the application cannot use
	117	* and floating point printf's.
	118	* It also seems to be needed for Visual C 1.5 (win16) */
	119	#if defined(WIN32) \|\| defined(WIN16)
	120	SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
	121	#endif
	122
	123	if (app_locks == NULL)
	124	if ((app_locks=sk_new_null()) == NULL)
	125	CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
	126	return(0);
	127	if ((str=BUF_strdup(name)) == NULL)
	128	return(0);
	129	i=sk_push(app_locks,str);
	130	if (!i)
	131	Free(str);
	132	else
	133	i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
	134	return(i);
	135	}
	136
d02b48c6 RE	137	void (*CRYPTO_get_locking_callback(P_V))(P_I_I_P_I)
	138	{
	139	return(locking_callback);
	140	}
	141
	142	int (*CRYPTO_get_add_lock_callback(P_V))(P_IP_I_I_P_I)
	143	{
	144	return(add_lock_callback);
	145	}
	146
	147	void CRYPTO_set_locking_callback(func)
	148	void (*func)(P_I_I_P_I);
	149	{
	150	locking_callback=func;
	151	}
	152
	153	void CRYPTO_set_add_lock_callback(func)
	154	int (*func)(P_IP_I_I_P_I);
	155	{
	156	add_lock_callback=func;
	157	}
	158
	159	unsigned long (*CRYPTO_get_id_callback(P_V))(P_V)
	160	{
	161	return(id_callback);
	162	}
	163
	164	void CRYPTO_set_id_callback(func)
	165	unsigned long (*func)(P_V);
	166	{
	167	id_callback=func;
	168	}
	169
	170	unsigned long CRYPTO_thread_id()
	171	{
	172	unsigned long ret=0;
	173
	174	if (id_callback == NULL)
	175	{
	176	#ifdef WIN16
	177	ret=(unsigned long)GetCurrentTask();
	178	#elif defined(WIN32)
	179	ret=(unsigned long)GetCurrentThreadId();
	180	#elif defined(MSDOS)
	181	ret=1L;
	182	#else
	183	ret=(unsigned long)getpid();
	184	#endif
	185	}
	186	else
	187	ret=id_callback();
	188	return(ret);
	189	}
	190
	191	void CRYPTO_lock(mode,type,file,line)
	192	int mode;
	193	int type;
	194	char *file;
	195	int line;
	196	{
	197	#ifdef LOCK_DEBUG
	198	{
	199	char rw_text,operation_text;
	200
201	if (mode & CRYPTO_LOCK)
202	operation_text="lock ";
203	else if (mode & CRYPTO_UNLOCK)
204	operation_text="unlock";
205	else
206	operation_text="ERROR ";
207
208	if (mode & CRYPTO_READ)
209	rw_text="r";
210	else if (mode & CRYPTO_WRITE)
211	rw_text="w";
212	else
213	rw_text="ERROR";
214
215	fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
216	CRYPTO_thread_id(), rw_text, operation_text,
217	CRYPTO_get_lock_name(type), file, line);
218	}
219	#endif
220	if (locking_callback != NULL)
221	locking_callback(mode,type,file,line);
222	}
223
224	int CRYPTO_add_lock(pointer,amount,type,file,line)
225	int *pointer;
226	int amount;
227	int type;
228	char *file;
229	int line;
230	{
231	int ret;
232
233	if (add_lock_callback != NULL)
234	{
235	#ifdef LOCK_DEBUG
236	int before= *pointer;
237	#endif
238
239	ret=add_lock_callback(pointer,amount,type,file,line);
240	#ifdef LOCK_DEBUG
241	fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
242	CRYPTO_thread_id(),
243	before,amount,ret,
244	CRYPTO_get_lock_name(type),
245	file,line);
246	#endif
247	*pointer=ret;
248	}
249	else
250	{
251	CRYPTO_lock(CRYPTO_LOCK\|CRYPTO_WRITE,type,file,line);
252
253	ret= *pointer+amount;
254	#ifdef LOCK_DEBUG
255	fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
256	CRYPTO_thread_id(),
257	*pointer,amount,ret,
258	CRYPTO_get_lock_name(type),
259	file,line);
260	#endif
261	*pointer=ret;
262	CRYPTO_lock(CRYPTO_UNLOCK\|CRYPTO_WRITE,type,file,line);
263	}
264	return(ret);
265	}
266
267	char *CRYPTO_get_lock_name(type)
268	int type;
269	{
58964a49 RE	270	if (type < 0)
	271	return("ERROR");
	272	else if (type < CRYPTO_NUM_LOCKS)
	273	return(lock_names[type]);
	274	else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
d02b48c6	275	return("ERROR");
58964a49 RE	276	else
58964a49 RE	277	return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
d02b48c6 RE	278	}
	279
	280	#ifdef _DLL
	281	#ifdef WIN32
	282
	283	/* All we really need to do is remove the 'error' state when a thread
	284	* detaches */
	285
	286	BOOL WINAPI DLLEntryPoint(hinstDLL,fdwReason,lpvReserved)
	287	HINSTANCE hinstDLL;
	288	DWORD fdwReason;
	289	LPVOID lpvReserved;
	290	{
	291	switch(fdwReason)
	292	{
	293	case DLL_PROCESS_ATTACH:
	294	break;
	295	case DLL_THREAD_ATTACH:
	296	break;
	297	case DLL_THREAD_DETACH:
	298	ERR_remove_state(0);
	299	break;
	300	case DLL_PROCESS_DETACH:
	301	break;
	302	}
	303	return(TRUE);
	304	}
	305	#endif
	306
	307	#endif