err.c

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/* crypto/err/err.c */
/* Copyright (C) 1995-1998 Eric Young ([e-mail])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([e-mail]).
 * 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 ([e-mail]).
 * 
 * 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 ([e-mail])"
 *    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 ([e-mail])"
 * 
 * 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 "lhash.h"
#include "crypto.h"
#include "cryptlib.h"
#include "buffer.h"
#include "err.h"
#include "crypto.h"


static LHASH *error_hash=NULL;
static LHASH *thread_hash=NULL;

#ifndef NOPROTO
static unsigned long err_hash(ERR_STRING_DATA *a);
static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b);
static unsigned long pid_hash(ERR_STATE *pid);
static int pid_cmp(ERR_STATE *a,ERR_STATE *pid);
static unsigned long get_error_values(int inc,char **file,int *line,
	char **data,int *flags);
static void ERR_STATE_free(ERR_STATE *s);
#else
static unsigned long err_hash();
static int err_cmp();
static unsigned long pid_hash();
static int pid_cmp();
static unsigned long get_error_values();
static void ERR_STATE_free();
ERR_STATE *s;
#endif

#ifndef NO_ERR
static ERR_STRING_DATA ERR_str_libraries[]=
	{
{ERR_PACK(ERR_LIB_NONE,0,0)		,"unknown library"},
{ERR_PACK(ERR_LIB_SYS,0,0)		,"system library"},
{ERR_PACK(ERR_LIB_BN,0,0)		,"bignum routines"},
{ERR_PACK(ERR_LIB_RSA,0,0)		,"rsa routines"},
{ERR_PACK(ERR_LIB_DH,0,0)		,"Diffie-Hellman routines"},
{ERR_PACK(ERR_LIB_EVP,0,0)		,"digital envelope routines"},
{ERR_PACK(ERR_LIB_BUF,0,0)		,"memory buffer routines"},
{ERR_PACK(ERR_LIB_BIO,0,0)		,"BIO routines"},
{ERR_PACK(ERR_LIB_OBJ,0,0)		,"object identifier routines"},
{ERR_PACK(ERR_LIB_PEM,0,0)		,"PEM routines"},
{ERR_PACK(ERR_LIB_ASN1,0,0)		,"asn1 encoding routines"},
{ERR_PACK(ERR_LIB_X509,0,0)		,"x509 certificate routines"},
{ERR_PACK(ERR_LIB_CONF,0,0)		,"configuation file routines"},
{ERR_PACK(ERR_LIB_METH,0,0)		,"X509 lookup 'method' routines"},
{ERR_PACK(ERR_LIB_SSL,0,0)		,"SSL routines"},
{ERR_PACK(ERR_LIB_RSAREF,0,0)		,"RSAref routines"},
{ERR_PACK(ERR_LIB_PROXY,0,0)		,"Proxy routines"},
{ERR_PACK(ERR_LIB_BIO,0,0)		,"BIO routines"},
{ERR_PACK(ERR_LIB_PKCS7,0,0)		,"PKCS7 routines"},
{0,NULL},
	};

static ERR_STRING_DATA ERR_str_functs[]=
	{
	{ERR_PACK(0,SYS_F_FOPEN,0),     	"fopen"},
	{ERR_PACK(0,SYS_F_CONNECT,0),		"connect"},
	{ERR_PACK(0,SYS_F_GETSERVBYNAME,0),	"getservbyname"},
	{ERR_PACK(0,SYS_F_SOCKET,0),		"socket"}, 
	{ERR_PACK(0,SYS_F_IOCTLSOCKET,0),	"ioctlsocket"},
	{ERR_PACK(0,SYS_F_BIND,0),		"bind"},
	{ERR_PACK(0,SYS_F_LISTEN,0),		"listen"},
	{ERR_PACK(0,SYS_F_ACCEPT,0),		"accept"},
#ifdef WINDOWS
	{ERR_PACK(0,SYS_F_WSASTARTUP,0),	"WSAstartup"},
#endif
	{0,NULL},
	};

static ERR_STRING_DATA ERR_str_reasons[]=
	{
{ERR_R_FATAL                             ,"fatal"},
{ERR_R_SYS_LIB				,"system lib"},
{ERR_R_BN_LIB				,"BN lib"},
{ERR_R_RSA_LIB				,"RSA lib"},
{ERR_R_DH_LIB				,"DH lib"},
{ERR_R_EVP_LIB				,"EVP lib"},
{ERR_R_BUF_LIB				,"BUF lib"},
{ERR_R_BIO_LIB				,"BIO lib"},
{ERR_R_OBJ_LIB				,"OBJ lib"},
{ERR_R_PEM_LIB				,"PEM lib"},
{ERR_R_X509_LIB				,"X509 lib"},
{ERR_R_METH_LIB				,"METH lib"},
{ERR_R_ASN1_LIB				,"ASN1 lib"},
{ERR_R_CONF_LIB				,"CONF lib"},
{ERR_R_SSL_LIB				,"SSL lib"},
{ERR_R_PROXY_LIB			,"PROXY lib"},
{ERR_R_BIO_LIB				,"BIO lib"},
{ERR_R_PKCS7_LIB			,"PKCS7 lib"},
{ERR_R_MALLOC_FAILURE			,"Malloc failure"},
{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED	,"called a fuction you should not call"},
{ERR_R_PASSED_NULL_PARAMETER		,"passed a null parameter"},
{ERR_R_NESTED_ASN1_ERROR		,"nested asn1 error"},
{ERR_R_BAD_ASN1_OBJECT_HEADER		,"bad asn1 object header"},
{ERR_R_BAD_GET_ASN1_OBJECT_CALL		,"bad get asn1 object call"},
{ERR_R_EXPECTING_AN_ASN1_SEQUENCE	,"expecting an asn1 sequence"},
{ERR_R_ASN1_LENGTH_MISMATCH		,"asn1 length mismatch"},
{ERR_R_MISSING_ASN1_EOS			,"missing asn1 eos"},

{0,NULL},
	};
#endif

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

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

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

void ERR_load_ERR_strings()
	{
	static int init=1;

	if (init)
		{
		CRYPTO_w_lock(CRYPTO_LOCK_ERR);
		if (init == 0)
			{
			CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
			return;
			}
		init=0;
		CRYPTO_w_unlock(CRYPTO_LOCK_ERR);

#ifndef NO_ERR
		ERR_load_strings(0,ERR_str_libraries);
		ERR_load_strings(0,ERR_str_reasons);
		ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);
#endif
		}
	}

void ERR_load_strings(lib,str)
int lib;
ERR_STRING_DATA *str;
	{
	if (error_hash == NULL)
		{
		CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
		error_hash=lh_new(err_hash,err_cmp);
		if (error_hash == NULL)
			{
			CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
			return;
			}
		CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);

		ERR_load_ERR_strings();
		}

	CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
	while (str->error)
		{
		str->error|=ERR_PACK(lib,0,0);
		lh_insert(error_hash,(char *)str);
		str++;
		}
	CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
	}

void ERR_free_strings()
	{
	CRYPTO_w_lock(CRYPTO_LOCK_ERR);

	if (error_hash != NULL)
		{
		lh_free(error_hash);
		error_hash=NULL;
		}

	CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
	}

/********************************************************/

void ERR_put_error(lib,func,reason,file,line)
int lib,func,reason;
char *file;
int line;
	{
	ERR_STATE *es;

	es=ERR_get_state();

	es->top=(es->top+1)%ERR_NUM_ERRORS;
	if (es->top == es->bottom)
		es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
	es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
	es->err_file[es->top]=file;
	es->err_line[es->top]=line;
	err_clear_data(es,es->top);
	}

void ERR_clear_error()
	{
	ERR_STATE *es;

	es=ERR_get_state();

#if 0
	/* hmm... is this needed */
	for (i=0; i<ERR_NUM_ERRORS; i++)
		{
		es->err_buffer[i]=0;
		es->err_file[i]=NULL;
		es->err_line[i]= -1;
		err_clear_data(es,i);
		}
#endif
	es->top=es->bottom=0;
	}


unsigned long ERR_get_error()
	{ return(get_error_values(1,NULL,NULL,NULL,NULL)); }

unsigned long ERR_get_error_line(file,line)
char **file;
int *line;
	{ return(get_error_values(1,file,line,NULL,NULL)); }

unsigned long ERR_get_error_line_data(file,line,data,flags)
char **file;
int *line;
char **data;
int *flags;
	{ return(get_error_values(1,file,line,data,flags)); }

unsigned long ERR_peek_error()
	{ return(get_error_values(0,NULL,NULL,NULL,NULL)); }

unsigned long ERR_peek_error_line(file,line)
char **file;
int *line;
	{ return(get_error_values(0,file,line,NULL,NULL)); }

unsigned long ERR_peek_error_line_data(file,line,data,flags)
char **file;
int *line;
char **data;
int *flags;
	{ return(get_error_values(0,file,line,data,flags)); }

static unsigned long get_error_values(inc,file,line,data,flags)
int inc;
char **file;
int *line;
char **data;
int *flags;
	{	
	int i=0;
	ERR_STATE *es;
	unsigned long ret;