src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/ssl/src/crypto/err/err_def.c - public/gem5-resources - Git at Google

 /* crypto/err/err_def.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.]
  */
 /* ====================================================================
  * Copyright (c) 1998-2001 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).
  *
  */

 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
 #include "cryptlib.h"
 #include <openssl/lhash.h>
 #include <openssl/crypto.h>
 #include <openssl/buffer.h>
 #include <openssl/bio.h>
 #include <openssl/err.h>

 #define err_clear_data(p,i) \
 	do { \
 	if (((p)->err_data[i] != NULL) && \
 		(p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
 		{  \
 		OPENSSL_free((p)->err_data[i]); \
 		(p)->err_data[i]=NULL; \
 		} \
 	(p)->err_data_flags[i]=0; \
 	} while(0)

 #define err_clear(p,i) \
 	do { \
 	(p)->err_flags[i]=0; \
 	(p)->err_buffer[i]=0; \
 	err_clear_data(p,i); \
 	(p)->err_file[i]=NULL; \
 	(p)->err_line[i]= -1; \
 	} while(0)

 static void err_load_strings(int lib, ERR_STRING_DATA *str);

 static void ERR_STATE_free(ERR_STATE *s);

 /* Define the predeclared (but externally opaque) "ERR_FNS" type */
 struct st_ERR_FNS
 	{
 	/* Works on the "error_hash" string table */
 	LHASH *(*cb_err_get)(int create);
 	void (*cb_err_del)(void);
 	ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
 	ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
 	ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
 	/* Works on the "thread_hash" error-state table */
 	LHASH *(*cb_thread_get)(int create);
 	void (*cb_thread_release)(LHASH **hash);
 	ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
 	ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
 	void (*cb_thread_del_item)(const ERR_STATE *);
 	/* Returns the next available error "library" numbers */
 	int (*cb_get_next_lib)(void);
 	};

 /* Predeclarations of the "err_defaults" functions */
 static LHASH *int_err_get(int create);
 static void int_err_del(void);
 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
 static LHASH *int_thread_get(int create);
 static void int_thread_release(LHASH **hash);
 static ERR_STATE *int_thread_get_item(const ERR_STATE *);
 static ERR_STATE *int_thread_set_item(ERR_STATE *);
 static void int_thread_del_item(const ERR_STATE *);
 static int int_err_get_next_lib(void);
 /* The static ERR_FNS table using these defaults functions */
 static const ERR_FNS err_defaults =
 	{
 	int_err_get,
 	int_err_del,
 	int_err_get_item,
 	int_err_set_item,
 	int_err_del_item,
 	int_thread_get,
 	int_thread_release,
 	int_thread_get_item,
 	int_thread_set_item,
 	int_thread_del_item,
 	int_err_get_next_lib
 	};

 /* The replacable table of ERR_FNS functions we use at run-time */
 static const ERR_FNS *err_fns = NULL;

 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
 #define ERRFN(a) err_fns->cb_##a

 /* The internal state used by "err_defaults" - as such, the setting, reading,
  * creating, and deleting of this data should only be permitted via the
  * "err_defaults" functions. This way, a linked module can completely defer all
  * ERR state operation (together with requisite locking) to the implementations
  * and state in the loading application. */
 static LHASH *int_error_hash = NULL;
 static LHASH *int_thread_hash = NULL;
 static int int_thread_hash_references = 0;
 static int int_err_library_number= ERR_LIB_USER;

 /* Internal function that checks whether "err_fns" is set and if not, sets it to
  * the defaults. */
 static void err_fns_check(void)
 	{
 	if (err_fns) return;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	if (!err_fns)
 		err_fns = &err_defaults;
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 	}

 /* API functions to get or set the underlying ERR functions. */

 const ERR_FNS *ERR_get_implementation(void)
 	{
 	err_fns_check();
 	return err_fns;
 	}

 int ERR_set_implementation(const ERR_FNS *fns)
 	{
 	int ret = 0;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	/* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
 	 * an error is there?! */
 	if (!err_fns)
 		{
 		err_fns = fns;
 		ret = 1;
 		}
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 	return ret;
 	}

 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables
  * internal to the "err_defaults" implementation. */

 /* static unsigned long err_hash(ERR_STRING_DATA *a); */
 static unsigned long err_hash(const void *a_void);
 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */
 static int err_cmp(const void *a_void, const void *b_void);
 /* static unsigned long pid_hash(ERR_STATE *pid); */
 static unsigned long pid_hash(const void *pid_void);
 /* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */
 static int pid_cmp(const void *a_void,const void *pid_void);

 /* The internal functions used in the "err_defaults" implementation */

 static LHASH *int_err_get(int create)
 	{
 	LHASH *ret = NULL;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	if (!int_error_hash && create)
 		{
 		CRYPTO_push_info("int_err_get (err.c)");
 		int_error_hash = lh_new(err_hash, err_cmp);
 		CRYPTO_pop_info();
 		}
 	if (int_error_hash)
 		ret = int_error_hash;
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

 	return ret;
 	}

 static void int_err_del(void)
 	{
 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	if (int_error_hash)
 		{
 		lh_free(int_error_hash);
 		int_error_hash = NULL;
 		}
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 	}

 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
 	{
 	ERR_STRING_DATA *p;
 	LHASH *hash;

 	err_fns_check();
 	hash = ERRFN(err_get)(0);
 	if (!hash)
 		return NULL;

 	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
 	p = (ERR_STRING_DATA *)lh_retrieve(hash, d);
 	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);

 	return p;
 	}

 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
 	{
 	ERR_STRING_DATA *p;
 	LHASH *hash;

 	err_fns_check();
 	hash = ERRFN(err_get)(1);
 	if (!hash)
 		return NULL;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	p = (ERR_STRING_DATA *)lh_insert(hash, d);
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

 	return p;
 	}

 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
 	{
 	ERR_STRING_DATA *p;
 	LHASH *hash;

 	err_fns_check();
 	hash = ERRFN(err_get)(0);
 	if (!hash)
 		return NULL;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	p = (ERR_STRING_DATA *)lh_delete(hash, d);
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

 	return p;
 	}

 static LHASH *int_thread_get(int create)
 	{
 	LHASH *ret = NULL;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	if (!int_thread_hash && create)
 		{
 		CRYPTO_push_info("int_thread_get (err.c)");
 		int_thread_hash = lh_new(pid_hash, pid_cmp);
 		CRYPTO_pop_info();
 		}
 	if (int_thread_hash)
 		{
 		int_thread_hash_references++;
 		ret = int_thread_hash;
 		}
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 	return ret;
 	}

 static void int_thread_release(LHASH **hash)
 	{
 	int i;

 	if (hash == NULL || *hash == NULL)
 		return;

 	i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);

 #ifdef REF_PRINT
 	fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR");
 #endif
 	if (i > 0) return;
 #ifdef REF_CHECK
 	if (i < 0)
 		{
 		fprintf(stderr,"int_thread_release, bad reference count\n");
 		abort(); /* ok */
 		}
 #endif
 	*hash = NULL;
 	}

 static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
 	{
 	ERR_STATE *p;
 	LHASH *hash;

 	err_fns_check();
 	hash = ERRFN(thread_get)(0);
 	if (!hash)
 		return NULL;

 	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
 	p = (ERR_STATE *)lh_retrieve(hash, d);
 	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);

 	ERRFN(thread_release)(&hash);
 	return p;
 	}

 static ERR_STATE *int_thread_set_item(ERR_STATE *d)
 	{
 	ERR_STATE *p;
 	LHASH *hash;

 	err_fns_check();
 	hash = ERRFN(thread_get)(1);
 	if (!hash)
 		return NULL;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	p = (ERR_STATE *)lh_insert(hash, d);
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

 	ERRFN(thread_release)(&hash);
 	return p;
 	}

 static void int_thread_del_item(const ERR_STATE *d)
 	{
 	ERR_STATE *p;
 	LHASH *hash;

 	err_fns_check();
 	hash = ERRFN(thread_get)(0);
 	if (!hash)
 		return;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	p = (ERR_STATE *)lh_delete(hash, d);
 	/* make sure we don't leak memory */
 	if (int_thread_hash_references == 1
 		&& int_thread_hash && (lh_num_items(int_thread_hash) == 0))
 		{
 		lh_free(int_thread_hash);
 		int_thread_hash = NULL;
 		}
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

 	ERRFN(thread_release)(&hash);
 	if (p)
 		ERR_STATE_free(p);
 	}

 static int int_err_get_next_lib(void)
 	{
 	int ret;

 	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 	ret = int_err_library_number++;
 	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

 	return ret;
 	}

 static void ERR_STATE_free(ERR_STATE *s)
 	{
 	int i;

 	if (s == NULL)
 	    return;

 	for (i=0; i<ERR_NUM_ERRORS; i++)
 		{
 		err_clear_data(s,i);
 		}
 	OPENSSL_free(s);
 	}

 static void err_load_strings(int lib, ERR_STRING_DATA *str)
 	{
 	while (str->error)
 		{
 		if (lib)
 			str->error|=ERR_PACK(lib,0,0);
 		ERRFN(err_set_item)(str);
 		str++;
 		}
 	}

 void ERR_load_strings(int lib, ERR_STRING_DATA *str)
 	{
 	err_fns_check();
 	err_load_strings(lib, str);
 	}

 void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
 	{
 	while (str->error)
 		{
 		if (lib)
 			str->error|=ERR_PACK(lib,0,0);
 		ERRFN(err_del_item)(str);
 		str++;
 		}
 	}

 void ERR_free_strings(void)
 	{
 	err_fns_check();
 	ERRFN(err_del)();
 	}

 LHASH *ERR_get_string_table(void)
 	{
 	err_fns_check();
 	return ERRFN(err_get)(0);
 	}

 LHASH *ERR_get_err_state_table(void)
 	{
 	err_fns_check();
 	return ERRFN(thread_get)(0);
 	}

 void ERR_release_err_state_table(LHASH **hash)
 	{
 	err_fns_check();
 	ERRFN(thread_release)(hash);
 	}

 const char *ERR_lib_error_string(unsigned long e)
 	{
 	ERR_STRING_DATA d,*p;
 	unsigned long l;

 	err_fns_check();
 	l=ERR_GET_LIB(e);
 	d.error=ERR_PACK(l,0,0);
 	p=ERRFN(err_get_item)(&d);
 	return((p == NULL)?NULL:p->string);
 	}

 const char *ERR_func_error_string(unsigned long e)
 	{
 	ERR_STRING_DATA d,*p;
 	unsigned long l,f;

 	err_fns_check();
 	l=ERR_GET_LIB(e);
 	f=ERR_GET_FUNC(e);
 	d.error=ERR_PACK(l,f,0);
 	p=ERRFN(err_get_item)(&d);
 	return((p == NULL)?NULL:p->string);
 	}

 const char *ERR_reason_error_string(unsigned long e)
 	{
 	ERR_STRING_DATA d,*p=NULL;
 	unsigned long l,r;

 	err_fns_check();
 	l=ERR_GET_LIB(e);
 	r=ERR_GET_REASON(e);
 	d.error=ERR_PACK(l,0,r);
 	p=ERRFN(err_get_item)(&d);
 	if (!p)
 		{
 		d.error=ERR_PACK(0,0,r);
 		p=ERRFN(err_get_item)(&d);
 		}
 	return((p == NULL)?NULL:p->string);
 	}

 /* static unsigned long err_hash(ERR_STRING_DATA *a) */
 static unsigned long err_hash(const void *a_void)
 	{
 	unsigned long ret,l;

 	l=((const ERR_STRING_DATA *)a_void)->error;
 	ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
 	return(ret^ret%19*13);
 	}

 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */
 static int err_cmp(const void *a_void, const void *b_void)
 	{
 	return((int)(((const ERR_STRING_DATA *)a_void)->error -
 			((const ERR_STRING_DATA *)b_void)->error));
 	}

 /* static unsigned long pid_hash(ERR_STATE *a) */
 static unsigned long pid_hash(const void *a_void)
 	{
 	return(((const ERR_STATE *)a_void)->pid*13);
 	}

 /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */
 static int pid_cmp(const void *a_void, const void *b_void)
 	{
 	return((int)((long)((const ERR_STATE *)a_void)->pid -
 			(long)((const ERR_STATE *)b_void)->pid));
 	}
 #ifdef OPENSSL_FIPS
 static void int_err_remove_state(unsigned long pid)
 #else
 void ERR_remove_state(unsigned long pid)
 #endif
 	{
 	ERR_STATE tmp;

 	err_fns_check();
 	if (pid == 0)
 		pid=(unsigned long)CRYPTO_thread_id();
 	tmp.pid=pid;
 	/* thread_del_item automatically destroys the LHASH if the number of
 	 * items reaches zero. */
 	ERRFN(thread_del_item)(&tmp);
 	}

 #ifdef OPENSSL_FIPS
 	static ERR_STATE *int_err_get_state(void)
 #else
 ERR_STATE *ERR_get_state(void)
 #endif
 	{
 	static ERR_STATE fallback;
 	ERR_STATE *ret,tmp,*tmpp=NULL;
 	int i;
 	unsigned long pid;

 	err_fns_check();
 	pid=(unsigned long)CRYPTO_thread_id();
 	tmp.pid=pid;
 	ret=ERRFN(thread_get_item)(&tmp);

 	/* ret == the error state, if NULL, make a new one */
 	if (ret == NULL)
 		{
 		ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
 		if (ret == NULL) return(&fallback);
 		ret->pid=pid;
 		ret->top=0;
 		ret->bottom=0;
 		for (i=0; i<ERR_NUM_ERRORS; i++)
 			{
 			ret->err_data[i]=NULL;
 			ret->err_data_flags[i]=0;
 			}
 		tmpp = ERRFN(thread_set_item)(ret);
 		/* To check if insertion failed, do a get. */
 		if (ERRFN(thread_get_item)(ret) != ret)
 			{
 			ERR_STATE_free(ret); /* could not insert it */
 			return(&fallback);
 			}
 		/* If a race occured in this function and we came second, tmpp
 		 * is the first one that we just replaced. */
 		if (tmpp)
 			ERR_STATE_free(tmpp);
 		}
 	return ret;
 	}

 #ifdef OPENSSL_FIPS
 void int_ERR_lib_init(void)
 	{
 	int_ERR_set_state_func(int_err_get_state, int_err_remove_state);
 	}
 #endif

 int ERR_get_next_error_library(void)
 	{
 	err_fns_check();
 	return ERRFN(get_next_lib)();
 	}
	/* crypto/err/err_def.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.]
	*/
	/* ====================================================================
	* Copyright (c) 1998-2001 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).
	*
	*/

	#include <stdio.h>
	#include <stdarg.h>
	#include <string.h>
	#include "cryptlib.h"
	#include <openssl/lhash.h>
	#include <openssl/crypto.h>
	#include <openssl/buffer.h>
	#include <openssl/bio.h>
	#include <openssl/err.h>

	#define err_clear_data(p,i) \
	do { \
	if (((p)->err_data[i] != NULL) && \
	(p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
	{ \
	OPENSSL_free((p)->err_data[i]); \
	(p)->err_data[i]=NULL; \
	} \
	(p)->err_data_flags[i]=0; \
	} while(0)

	#define err_clear(p,i) \
	do { \
	(p)->err_flags[i]=0; \
	(p)->err_buffer[i]=0; \
	err_clear_data(p,i); \
	(p)->err_file[i]=NULL; \
	(p)->err_line[i]= -1; \
	} while(0)

	static void err_load_strings(int lib, ERR_STRING_DATA *str);

	static void ERR_STATE_free(ERR_STATE *s);

	/* Define the predeclared (but externally opaque) "ERR_FNS" type */
	struct st_ERR_FNS
	{
	/* Works on the "error_hash" string table */
	LHASH (cb_err_get)(int create);
	void (*cb_err_del)(void);
	ERR_STRING_DATA (cb_err_get_item)(const ERR_STRING_DATA *);
	ERR_STRING_DATA (cb_err_set_item)(ERR_STRING_DATA *);
	ERR_STRING_DATA (cb_err_del_item)(ERR_STRING_DATA *);
	/* Works on the "thread_hash" error-state table */
	LHASH (cb_thread_get)(int create);
	void (cb_thread_release)(LHASH *hash);
	ERR_STATE (cb_thread_get_item)(const ERR_STATE *);
	ERR_STATE (cb_thread_set_item)(ERR_STATE *);
	void (cb_thread_del_item)(const ERR_STATE );
	/* Returns the next available error "library" numbers */
	int (*cb_get_next_lib)(void);
	};

	/* Predeclarations of the "err_defaults" functions */
	static LHASH *int_err_get(int create);
	static void int_err_del(void);
	static ERR_STRING_DATA int_err_get_item(const ERR_STRING_DATA );
	static ERR_STRING_DATA int_err_set_item(ERR_STRING_DATA );
	static ERR_STRING_DATA int_err_del_item(ERR_STRING_DATA );
	static LHASH *int_thread_get(int create);
	static void int_thread_release(LHASH **hash);
	static ERR_STATE int_thread_get_item(const ERR_STATE );
	static ERR_STATE int_thread_set_item(ERR_STATE );
	static void int_thread_del_item(const ERR_STATE *);
	static int int_err_get_next_lib(void);
	/* The static ERR_FNS table using these defaults functions */
	static const ERR_FNS err_defaults =
	{
	int_err_get,
	int_err_del,
	int_err_get_item,
	int_err_set_item,
	int_err_del_item,
	int_thread_get,
	int_thread_release,
	int_thread_get_item,
	int_thread_set_item,
	int_thread_del_item,
	int_err_get_next_lib
	};

	/* The replacable table of ERR_FNS functions we use at run-time */
	static const ERR_FNS *err_fns = NULL;

	/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
	#define ERRFN(a) err_fns->cb_##a

	/* The internal state used by "err_defaults" - as such, the setting, reading,
	* creating, and deleting of this data should only be permitted via the
	* "err_defaults" functions. This way, a linked module can completely defer all
	* ERR state operation (together with requisite locking) to the implementations
	* and state in the loading application. */
	static LHASH *int_error_hash = NULL;
	static LHASH *int_thread_hash = NULL;
	static int int_thread_hash_references = 0;
	static int int_err_library_number= ERR_LIB_USER;

	/* Internal function that checks whether "err_fns" is set and if not, sets it to
	* the defaults. */
	static void err_fns_check(void)
	{
	if (err_fns) return;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	if (!err_fns)
	err_fns = &err_defaults;
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
	}

	/* API functions to get or set the underlying ERR functions. */

	const ERR_FNS *ERR_get_implementation(void)
	{
	err_fns_check();
	return err_fns;
	}

	int ERR_set_implementation(const ERR_FNS *fns)
	{
	int ret = 0;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	/* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
	* an error is there?! */
	if (!err_fns)
	{
	err_fns = fns;
	ret = 1;
	}
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
	return ret;
	}

	/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
	* internal to the "err_defaults" implementation. */

	/* static unsigned long err_hash(ERR_STRING_DATA a); /
	static unsigned long err_hash(const void *a_void);
	/* static int err_cmp(ERR_STRING_DATA a, ERR_STRING_DATA b); */
	static int err_cmp(const void a_void, const void b_void);
	/* static unsigned long pid_hash(ERR_STATE pid); /
	static unsigned long pid_hash(const void *pid_void);
	/* static int pid_cmp(ERR_STATE a,ERR_STATE pid); */
	static int pid_cmp(const void a_void,const void pid_void);

	/* The internal functions used in the "err_defaults" implementation */

	static LHASH *int_err_get(int create)
	{
	LHASH *ret = NULL;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	if (!int_error_hash && create)
	{
	CRYPTO_push_info("int_err_get (err.c)");
	int_error_hash = lh_new(err_hash, err_cmp);
	CRYPTO_pop_info();
	}
	if (int_error_hash)
	ret = int_error_hash;
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

	return ret;
	}

	static void int_err_del(void)
	{
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	if (int_error_hash)
	{
	lh_free(int_error_hash);
	int_error_hash = NULL;
	}
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
	}

	static ERR_STRING_DATA int_err_get_item(const ERR_STRING_DATA d)
	{
	ERR_STRING_DATA *p;
	LHASH *hash;

	err_fns_check();
	hash = ERRFN(err_get)(0);
	if (!hash)
	return NULL;

	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
	p = (ERR_STRING_DATA *)lh_retrieve(hash, d);
	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);

	return p;
	}

	static ERR_STRING_DATA int_err_set_item(ERR_STRING_DATA d)
	{
	ERR_STRING_DATA *p;
	LHASH *hash;

	err_fns_check();
	hash = ERRFN(err_get)(1);
	if (!hash)
	return NULL;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	p = (ERR_STRING_DATA *)lh_insert(hash, d);
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

	return p;
	}

	static ERR_STRING_DATA int_err_del_item(ERR_STRING_DATA d)
	{
	ERR_STRING_DATA *p;
	LHASH *hash;

	err_fns_check();
	hash = ERRFN(err_get)(0);
	if (!hash)
	return NULL;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	p = (ERR_STRING_DATA *)lh_delete(hash, d);
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

	return p;
	}

	static LHASH *int_thread_get(int create)
	{
	LHASH *ret = NULL;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	if (!int_thread_hash && create)
	{
	CRYPTO_push_info("int_thread_get (err.c)");
	int_thread_hash = lh_new(pid_hash, pid_cmp);
	CRYPTO_pop_info();
	}
	if (int_thread_hash)
	{
	int_thread_hash_references++;
	ret = int_thread_hash;
	}
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
	return ret;
	}

	static void int_thread_release(LHASH **hash)
	{
	int i;

	if (hash == NULL \|\| *hash == NULL)
	return;

	i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);

	#ifdef REF_PRINT
	fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR");
	#endif
	if (i > 0) return;
	#ifdef REF_CHECK
	if (i < 0)
	{
	fprintf(stderr,"int_thread_release, bad reference count\n");
	abort(); /* ok */
	}
	#endif
	*hash = NULL;
	}

	static ERR_STATE int_thread_get_item(const ERR_STATE d)
	{
	ERR_STATE *p;
	LHASH *hash;

	err_fns_check();
	hash = ERRFN(thread_get)(0);
	if (!hash)
	return NULL;

	CRYPTO_r_lock(CRYPTO_LOCK_ERR);
	p = (ERR_STATE *)lh_retrieve(hash, d);
	CRYPTO_r_unlock(CRYPTO_LOCK_ERR);

	ERRFN(thread_release)(&hash);
	return p;
	}

	static ERR_STATE int_thread_set_item(ERR_STATE d)
	{
	ERR_STATE *p;
	LHASH *hash;

	err_fns_check();
	hash = ERRFN(thread_get)(1);
	if (!hash)
	return NULL;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	p = (ERR_STATE *)lh_insert(hash, d);
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

	ERRFN(thread_release)(&hash);
	return p;
	}

	static void int_thread_del_item(const ERR_STATE *d)
	{
	ERR_STATE *p;
	LHASH *hash;

	err_fns_check();
	hash = ERRFN(thread_get)(0);
	if (!hash)
	return;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	p = (ERR_STATE *)lh_delete(hash, d);
	/* make sure we don't leak memory */
	if (int_thread_hash_references == 1
	&& int_thread_hash && (lh_num_items(int_thread_hash) == 0))
	{
	lh_free(int_thread_hash);
	int_thread_hash = NULL;
	}
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

	ERRFN(thread_release)(&hash);
	if (p)
	ERR_STATE_free(p);
	}

	static int int_err_get_next_lib(void)
	{
	int ret;

	CRYPTO_w_lock(CRYPTO_LOCK_ERR);
	ret = int_err_library_number++;
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

	return ret;
	}

	static void ERR_STATE_free(ERR_STATE *s)
	{
	int i;

	if (s == NULL)
	return;

	for (i=0; i<ERR_NUM_ERRORS; i++)
	{
	err_clear_data(s,i);
	}
	OPENSSL_free(s);
	}

	static void err_load_strings(int lib, ERR_STRING_DATA *str)
	{
	while (str->error)
	{
	if (lib)
	str->error\|=ERR_PACK(lib,0,0);
	ERRFN(err_set_item)(str);
	str++;
	}
	}

	void ERR_load_strings(int lib, ERR_STRING_DATA *str)
	{
	err_fns_check();
	err_load_strings(lib, str);
	}

	void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
	{
	while (str->error)
	{
	if (lib)
	str->error\|=ERR_PACK(lib,0,0);
	ERRFN(err_del_item)(str);
	str++;
	}
	}

	void ERR_free_strings(void)
	{
	err_fns_check();
	ERRFN(err_del)();
	}

	LHASH *ERR_get_string_table(void)
	{
	err_fns_check();
	return ERRFN(err_get)(0);
	}

	LHASH *ERR_get_err_state_table(void)
	{
	err_fns_check();
	return ERRFN(thread_get)(0);
	}

	void ERR_release_err_state_table(LHASH **hash)
	{
	err_fns_check();
	ERRFN(thread_release)(hash);
	}

	const char *ERR_lib_error_string(unsigned long e)
	{
	ERR_STRING_DATA d,*p;
	unsigned long l;

	err_fns_check();
	l=ERR_GET_LIB(e);
	d.error=ERR_PACK(l,0,0);
	p=ERRFN(err_get_item)(&d);
	return((p == NULL)?NULL:p->string);
	}

	const char *ERR_func_error_string(unsigned long e)
	{
	ERR_STRING_DATA d,*p;
	unsigned long l,f;

	err_fns_check();
	l=ERR_GET_LIB(e);
	f=ERR_GET_FUNC(e);
	d.error=ERR_PACK(l,f,0);
	p=ERRFN(err_get_item)(&d);
	return((p == NULL)?NULL:p->string);
	}

	const char *ERR_reason_error_string(unsigned long e)
	{
	ERR_STRING_DATA d,*p=NULL;
	unsigned long l,r;

	err_fns_check();
	l=ERR_GET_LIB(e);
	r=ERR_GET_REASON(e);
	d.error=ERR_PACK(l,0,r);
	p=ERRFN(err_get_item)(&d);
	if (!p)
	{
	d.error=ERR_PACK(0,0,r);
	p=ERRFN(err_get_item)(&d);
	}
	return((p == NULL)?NULL:p->string);
	}

	/* static unsigned long err_hash(ERR_STRING_DATA a) /
	static unsigned long err_hash(const void *a_void)
	{
	unsigned long ret,l;

	l=((const ERR_STRING_DATA *)a_void)->error;
	ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
	return(ret^ret%19*13);
	}

	/* static int err_cmp(ERR_STRING_DATA a, ERR_STRING_DATA b) */
	static int err_cmp(const void a_void, const void b_void)
	{
	return((int)(((const ERR_STRING_DATA *)a_void)->error -
	((const ERR_STRING_DATA *)b_void)->error));
	}

	/* static unsigned long pid_hash(ERR_STATE a) /
	static unsigned long pid_hash(const void *a_void)
	{
	return(((const ERR_STATE )a_void)->pid13);
	}

	/* static int pid_cmp(ERR_STATE a, ERR_STATE b) */
	static int pid_cmp(const void a_void, const void b_void)
	{
	return((int)((long)((const ERR_STATE *)a_void)->pid -
	(long)((const ERR_STATE *)b_void)->pid));
	}
	#ifdef OPENSSL_FIPS
	static void int_err_remove_state(unsigned long pid)
	#else
	void ERR_remove_state(unsigned long pid)
	#endif
	{
	ERR_STATE tmp;

	err_fns_check();
	if (pid == 0)
	pid=(unsigned long)CRYPTO_thread_id();
	tmp.pid=pid;
	/* thread_del_item automatically destroys the LHASH if the number of
	* items reaches zero. */
	ERRFN(thread_del_item)(&tmp);
	}

	#ifdef OPENSSL_FIPS
	static ERR_STATE *int_err_get_state(void)
	#else
	ERR_STATE *ERR_get_state(void)
	#endif
	{
	static ERR_STATE fallback;
	ERR_STATE ret,tmp,tmpp=NULL;
	int i;
	unsigned long pid;

	err_fns_check();
	pid=(unsigned long)CRYPTO_thread_id();
	tmp.pid=pid;
	ret=ERRFN(thread_get_item)(&tmp);

	/* ret == the error state, if NULL, make a new one */
	if (ret == NULL)
	{
	ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
	if (ret == NULL) return(&fallback);
	ret->pid=pid;
	ret->top=0;
	ret->bottom=0;
	for (i=0; i<ERR_NUM_ERRORS; i++)
	{
	ret->err_data[i]=NULL;
	ret->err_data_flags[i]=0;
	}
	tmpp = ERRFN(thread_set_item)(ret);
	/* To check if insertion failed, do a get. */
	if (ERRFN(thread_get_item)(ret) != ret)
	{
	ERR_STATE_free(ret); /* could not insert it */
	return(&fallback);
	}
	/* If a race occured in this function and we came second, tmpp
	* is the first one that we just replaced. */
	if (tmpp)
	ERR_STATE_free(tmpp);
	}
	return ret;
	}

	#ifdef OPENSSL_FIPS
	void int_ERR_lib_init(void)
	{
	int_ERR_set_state_func(int_err_get_state, int_err_remove_state);
	}
	#endif

	int ERR_get_next_error_library(void)
	{
	err_fns_check();
	return ERRFN(get_next_lib)();
	}