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openssl/crypto/err/err.c
Richard Levitte d44c7dcf00 Merge in code from main trunk to BRANCH_engine.
2000-06-08 11:00:37 +00:00

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/* crypto/err/err.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) 1998-2000 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 <openssl/lhash.h>
#include <openssl/crypto.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/bio.h>
#include <openssl/err.h>
static LHASH *error_hash=NULL;
static LHASH *thread_hash=NULL;
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,const char **file,int *line,
const char **data,int *flags);
static void ERR_STATE_free(ERR_STATE *s);
#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_DSA,0,0) ,"dsa 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) ,"configuration 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"},
{ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"},
{ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"},
{ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"},
{ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"},
{ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine 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
{ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"},
{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_PKCS12_LIB ,"PKCS12 lib"},
{ERR_R_MALLOC_FAILURE ,"Malloc failure"},
{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function 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"},
{ERR_R_DSO_LIB ,"DSO lib"},
{ERR_R_ENGINE_LIB ,"ENGINE lib"},
{0,NULL},
};
#define NUM_SYS_STR_REASONS 127
#define LEN_SYS_STR_REASON 32
static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
/* SYS_str_reasons is filled with copies of strerror() results at
* initialization.
* 'errno' values up to 127 should cover all usual errors,
* others will be displayed numerically by ERR_error_string.
* It is crucial that we have something for each reason code
* that occurs in ERR_str_reasons, or bogus reason strings
* will be returned for SYSerr(), which always gets an errno
* value and never one of those 'standard' reason codes. */
static void build_SYS_str_reasons()
{
/* OPENSSL_malloc cannot be used here, use static storage instead */
static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
int i;
CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
{
ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
str->error = (unsigned long)i;
if (str->string == NULL)
{
char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
char *src = strerror(i);
if (src != NULL)
{
strncpy(*dest, src, sizeof *dest);
(*dest)[sizeof *dest - 1] = '\0';
str->string = *dest;
}
}
if (str->string == NULL)
str->string = "unknown";
}
/* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
* as required by ERR_load_strings. */
CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
}
#endif
#define err_clear_data(p,i) \
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;
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);
}
void ERR_load_ERR_strings(void)
{
static int init=1;
if (init)
{
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
if (init == 0)
{
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
return;
}
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);
build_SYS_str_reasons();
ERR_load_strings(ERR_LIB_SYS,SYS_str_reasons);
#endif
init=0;
}
}
void ERR_load_strings(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,str);
str++;
}
CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
}
void ERR_free_strings(void)
{
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(int lib, int func, int reason, const char *file,
int line)
{
ERR_STATE *es;
#ifdef _OSD_POSIX
/* In the BS2000-OSD POSIX subsystem, the compiler generates
* path names in the form "*POSIX(/etc/passwd)".
* This dirty hack strips them to something sensible.
* @@@ We shouldn't modify a const string, though.
*/
if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
char *end;
/* Skip the "*POSIX(" prefix */
file += sizeof("*POSIX(")-1;
end = &file[strlen(file)-1];
if (*end == ')')
*end = '\0';
/* Optional: use the basename of the path only. */
if ((end = strrchr(file, '/')) != NULL)
file = &end[1];
}
#endif
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(void)
{
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(void)
{ return(get_error_values(1,NULL,NULL,NULL,NULL)); }
unsigned long ERR_get_error_line(const char **file,
int *line)
{ return(get_error_values(1,file,line,NULL,NULL)); }
unsigned long ERR_get_error_line_data(const char **file, int *line,
const char **data, int *flags)
{ return(get_error_values(1,file,line,
data,flags)); }
unsigned long ERR_peek_error(void)
{ return(get_error_values(0,NULL,NULL,NULL,NULL)); }
unsigned long ERR_peek_error_line(const char **file,
int *line)
{ return(get_error_values(0,file,line,NULL,NULL)); }
unsigned long ERR_peek_error_line_data(const char **file, int *line,
const char **data, int *flags)
{ return(get_error_values(0,file,line,
data,flags)); }
static unsigned long get_error_values(int inc, const char **file, int *line,
const char **data, int *flags)
{
int i=0;
ERR_STATE *es;
unsigned long ret;
es=ERR_get_state();
if (es->bottom == es->top) return(0);
i=(es->bottom+1)%ERR_NUM_ERRORS;
ret=es->err_buffer[i];
if (inc)
{
es->bottom=i;
es->err_buffer[i]=0;
}
if ((file != NULL) && (line != NULL))
{
if (es->err_file[i] == NULL)
{
*file="NA";
if (line != NULL) *line=0;
}
else
{
*file=es->err_file[i];
if (line != NULL) *line=es->err_line[i];
}
}
if (data != NULL)
{
if (es->err_data[i] == NULL)
{
*data="";
if (flags != NULL) *flags=0;
}
else
{
*data=es->err_data[i];
if (flags != NULL) *flags=es->err_data_flags[i];
}
}
return(ret);
}
void ERR_error_string_n(unsigned long e, char *buf, size_t len)
{
char lsbuf[64], fsbuf[64], rsbuf[64];
const char *ls,*fs,*rs;
unsigned long l,f,r;
l=ERR_GET_LIB(e);
f=ERR_GET_FUNC(e);
r=ERR_GET_REASON(e);
ls=ERR_lib_error_string(e);
fs=ERR_func_error_string(e);
rs=ERR_reason_error_string(e);
if (ls == NULL)
BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
if (fs == NULL)
BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
if (rs == NULL)
BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
fs?fs:fsbuf, rs?rs:rsbuf);
if (strlen(buf) == len-1)
{
/* output may be truncated; make sure we always have 5
* colon-separated fields, i.e. 4 colons ... */
#define NUM_COLONS 4
if (len > NUM_COLONS) /* ... if possible */
{
int i;
char *s = buf;
for (i = 0; i < NUM_COLONS; i++)
{
char *colon = strchr(s, ':');
if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
{
/* set colon no. i at last possible position
* (buf[len-1] is the terminating 0)*/
colon = &buf[len-1] - NUM_COLONS + i;
*colon = ':';
}
s = colon + 1;
}
}
}
}
/* BAD for multi-threading: uses a local buffer if ret == NULL */
/* ERR_error_string_n should be used instead for ret != NULL
* as ERR_error_string cannot know how large the buffer is */
char *ERR_error_string(unsigned long e, char *ret)
{
static char buf[256];
if (ret == NULL) ret=buf;
ERR_error_string_n(e, buf, 256);
return(ret);
}
LHASH *ERR_get_string_table(void)
{
return(error_hash);
}
/* not thread-safe */
LHASH *ERR_get_err_state_table(void)
{
return(thread_hash);
}
const char *ERR_lib_error_string(unsigned long e)
{
ERR_STRING_DATA d,*p=NULL;
unsigned long l;
l=ERR_GET_LIB(e);
CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
if (error_hash != NULL)
{
d.error=ERR_PACK(l,0,0);
p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
}
CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
return((p == NULL)?NULL:p->string);
}
const char *ERR_func_error_string(unsigned long e)
{
ERR_STRING_DATA d,*p=NULL;
unsigned long l,f;
l=ERR_GET_LIB(e);
f=ERR_GET_FUNC(e);
CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
if (error_hash != NULL)
{
d.error=ERR_PACK(l,f,0);
p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
}
CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
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;
l=ERR_GET_LIB(e);
r=ERR_GET_REASON(e);
CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
if (error_hash != NULL)
{
d.error=ERR_PACK(l,0,r);
p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
if (p == NULL)
{
d.error=ERR_PACK(0,0,r);
p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
}
}
CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
return((p == NULL)?NULL:p->string);
}
static unsigned long err_hash(ERR_STRING_DATA *a)
{
unsigned long ret,l;
l=a->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)
{
return((int)(a->error-b->error));
}
static unsigned long pid_hash(ERR_STATE *a)
{
return(a->pid*13);
}
static int pid_cmp(ERR_STATE *a, ERR_STATE *b)
{
return((int)((long)a->pid - (long)b->pid));
}
void ERR_remove_state(unsigned long pid)
{
ERR_STATE *p,tmp;
if (thread_hash == NULL)
return;
if (pid == 0)
pid=(unsigned long)CRYPTO_thread_id();
tmp.pid=pid;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
p=(ERR_STATE *)lh_delete(thread_hash,&tmp);
if (lh_num_items(thread_hash) == 0)
{
/* make sure we don't leak memory */
lh_free(thread_hash);
thread_hash = NULL;
}
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
if (p != NULL) ERR_STATE_free(p);
}
ERR_STATE *ERR_get_state(void)
{
static ERR_STATE fallback;
ERR_STATE *ret=NULL,tmp,*tmpp=NULL;
int thread_state_exists;
int i;
unsigned long pid;
pid=(unsigned long)CRYPTO_thread_id();
CRYPTO_r_lock(CRYPTO_LOCK_ERR);
if (thread_hash != NULL)
{
tmp.pid=pid;
ret=(ERR_STATE *)lh_retrieve(thread_hash,&tmp);
}
CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
/* 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;
}
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
/* no entry yet in thread_hash for current thread -
* thus, it may have changed since we last looked at it */
if (thread_hash == NULL)
thread_hash = lh_new(pid_hash, pid_cmp);
if (thread_hash == NULL)
thread_state_exists = 0; /* allocation error */
else
{
tmpp=(ERR_STATE *)lh_insert(thread_hash,ret);
thread_state_exists = 1;
}
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
if (!thread_state_exists)
{
ERR_STATE_free(ret); /* could not insert it */
return(&fallback);
}
if (tmpp != NULL) /* old entry - should not happen */
{
ERR_STATE_free(tmpp);
}
}
return(ret);
}
int ERR_get_next_error_library(void)
{
static int value=ERR_LIB_USER;
return(value++);
}
void ERR_set_error_data(char *data, int flags)
{
ERR_STATE *es;
int i;
es=ERR_get_state();
i=es->top;
if (i == 0)
i=ERR_NUM_ERRORS-1;
es->err_data[i]=data;
es->err_data_flags[es->top]=flags;
}
void ERR_add_error_data(int num, ...)
{
va_list args;
int i,n,s;
char *str,*p,*a;
s=64;
str=OPENSSL_malloc(s+1);
if (str == NULL) return;
str[0]='\0';
va_start(args, num);
n=0;
for (i=0; i<num; i++)
{
a=va_arg(args, char*);
/* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
if (a != NULL)
{
n+=strlen(a);
if (n > s)
{
s=n+20;
p=OPENSSL_realloc(str,s+1);
if (p == NULL)
{
OPENSSL_free(str);
return;
}
else
str=p;
}
strcat(str,a);
}
}
ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
va_end(args);
}
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