[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 <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",
#if CRYPTO_NUM_LOCKS != 24
# 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
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"
ec577822	62	#include <openssl/crypto.h>
d02b48c6	63
58964a49 RE	64	#if defined(WIN32) \|\| defined(WIN16)
	65	static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
	66	#endif
	67
d02b48c6	68	/* real #defines in crypto.h, keep these upto date */
e778802f	69	static const char* lock_names[CRYPTO_NUM_LOCKS] =
d02b48c6 RE	70	{
	71	"<<ERROR>>",
	72	"err",
	73	"err_hash",
	74	"x509",
	75	"x509_info",
	76	"x509_pkey",
	77	"x509_crl",
	78	"x509_req",
	79	"dsa",
	80	"rsa",
	81	"evp_pkey",
	82	"x509_store",
	83	"ssl_ctx",
	84	"ssl_cert",
	85	"ssl_session",
d36bcdf5	86	"ssl_sess_cert",
d02b48c6 RE	87	"ssl",
	88	"rand",
	89	"debug_malloc",
d02b48c6	90	"BIO",
2a82c7cf BM	91	"gethostbyname",
	92	"getservbyname",
	93	"readdir",
58964a49	94	"RSA_blinding",
2a82c7cf BM	95	#if CRYPTO_NUM_LOCKS != 24
2a82c7cf BM	96	# error "Inconsistency between crypto.h and cryptlib.c"
d36bcdf5	97	#endif
d02b48c6 RE	98	};
d02b48c6 RE	99
58964a49 RE	100	static STACK *app_locks=NULL;
58964a49 RE	101
d02b48c6	102	static void (MS_FAR *locking_callback)(int mode,int type,
e778802f	103	const char *file,int line)=NULL;
d02b48c6	104	static int (MS_FAR add_lock_callback)(int pointer,int amount,
e778802f	105	int type,const char *file,int line)=NULL;
d02b48c6	106	static unsigned long (MS_FAR *id_callback)(void)=NULL;
6b691a5c	107	int CRYPTO_get_new_lockid(char *name)
58964a49 RE	108	{
	109	char *str;
	110	int i;
	111
	112	/* A hack to make Visual C++ 5.0 work correctly when linking as
	113	* a DLL using /MT. Without this, the application cannot use
	114	* and floating point printf's.
	115	* It also seems to be needed for Visual C 1.5 (win16) */
	116	#if defined(WIN32) \|\| defined(WIN16)
	117	SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
	118	#endif
	119
dfeab068 RE	120	if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
	121	{
	122	CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
	123	return(0);
	124	}
58964a49 RE	125	if ((str=BUF_strdup(name)) == NULL)
	126	return(0);
	127	i=sk_push(app_locks,str);
	128	if (!i)
	129	Free(str);
	130	else
	131	i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
	132	return(i);
	133	}
	134
a111306b BM	135	int CRYPTO_num_locks(void)
	136	{
	137	return CRYPTO_NUM_LOCKS;
	138	}
	139
e778802f BL	140	void (CRYPTO_get_locking_callback(void))(int mode,int type,const char file,
e778802f BL	141	int line)
d02b48c6 RE	142	{
	143	return(locking_callback);
	144	}
	145
e778802f BL	146	int (CRYPTO_get_add_lock_callback(void))(int num,int mount,int type,
e778802f BL	147	const char *file,int line)
d02b48c6 RE	148	{
	149	return(add_lock_callback);
	150	}
	151
e778802f BL	152	void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
e778802f BL	153	const char *file,int line))
d02b48c6 RE	154	{
	155	locking_callback=func;
	156	}
	157
e778802f BL	158	void CRYPTO_set_add_lock_callback(int (func)(int num,int mount,int type,
e778802f BL	159	const char *file,int line))
d02b48c6 RE	160	{
	161	add_lock_callback=func;
	162	}
	163
73d2257d	164	unsigned long (*CRYPTO_get_id_callback(void))(void)
d02b48c6 RE	165	{
	166	return(id_callback);
	167	}
	168
73d2257d	169	void CRYPTO_set_id_callback(unsigned long (*func)(void))
d02b48c6 RE	170	{
	171	id_callback=func;
	172	}
	173
6b691a5c	174	unsigned long CRYPTO_thread_id(void)
d02b48c6 RE	175	{
	176	unsigned long ret=0;
	177
	178	if (id_callback == NULL)
	179	{
	180	#ifdef WIN16
	181	ret=(unsigned long)GetCurrentTask();
	182	#elif defined(WIN32)
	183	ret=(unsigned long)GetCurrentThreadId();
	184	#elif defined(MSDOS)
	185	ret=1L;
	186	#else
	187	ret=(unsigned long)getpid();
	188	#endif
	189	}
	190	else
	191	ret=id_callback();
	192	return(ret);
	193	}
	194
6b691a5c	195	void CRYPTO_lock(int mode, int type, const char *file, int line)
d02b48c6 RE	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
6b691a5c UM	224	int CRYPTO_add_lock(int pointer, int amount, int type, const char file,
6b691a5c UM	225	int line)
d02b48c6 RE	226	{
	227	int ret;
	228
	229	if (add_lock_callback != NULL)
	230	{
	231	#ifdef LOCK_DEBUG
	232	int before= *pointer;
	233	#endif
	234
	235	ret=add_lock_callback(pointer,amount,type,file,line);
	236	#ifdef LOCK_DEBUG
	237	fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
	238	CRYPTO_thread_id(),
	239	before,amount,ret,
	240	CRYPTO_get_lock_name(type),
	241	file,line);
	242	#endif
	243	*pointer=ret;
	244	}
	245	else
	246	{
	247	CRYPTO_lock(CRYPTO_LOCK\|CRYPTO_WRITE,type,file,line);
	248
	249	ret= *pointer+amount;
	250	#ifdef LOCK_DEBUG
	251	fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
	252	CRYPTO_thread_id(),
	253	*pointer,amount,ret,
	254	CRYPTO_get_lock_name(type),
	255	file,line);
	256	#endif
	257	*pointer=ret;
	258	CRYPTO_lock(CRYPTO_UNLOCK\|CRYPTO_WRITE,type,file,line);
	259	}
	260	return(ret);
	261	}
	262
6b691a5c	263	const char *CRYPTO_get_lock_name(int type)
d02b48c6	264	{
58964a49 RE	265	if (type < 0)
	266	return("ERROR");
	267	else if (type < CRYPTO_NUM_LOCKS)
	268	return(lock_names[type]);
	269	else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
d02b48c6	270	return("ERROR");
58964a49 RE	271	else
58964a49 RE	272	return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
d02b48c6 RE	273	}
	274
	275	#ifdef _DLL
	276	#ifdef WIN32
	277
	278	/* All we really need to do is remove the 'error' state when a thread
	279	* detaches */
	280
6b691a5c UM	281	BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
6b691a5c UM	282	LPVOID lpvReserved)
d02b48c6 RE	283	{
	284	switch(fdwReason)
	285	{
	286	case DLL_PROCESS_ATTACH:
	287	break;
	288	case DLL_THREAD_ATTACH:
	289	break;
	290	case DLL_THREAD_DETACH:
	291	ERR_remove_state(0);
	292	break;
	293	case DLL_PROCESS_DETACH:
	294	break;
	295	}
	296	return(TRUE);
	297	}
	298	#endif
	299
	300	#endif