err.c
/* 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) 1998-2001 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>
static unsigned long get_error_values(int inc, int top,
const char **file, int *line,
const char **data, int *flags);
#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)
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_flags[es->top] = 0;
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)
{
int i;
ERR_STATE *es;
es = ERR_get_state();
for (i = 0; i < ERR_NUM_ERRORS; i++) {
err_clear(es, i);
}
es->top = es->bottom = 0;
}
unsigned long ERR_get_error(void)
{
return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
}
unsigned long ERR_get_error_line(const char **file, int *line)
{
return (get_error_values(1, 0, 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, 0, file, line, data, flags));
}
unsigned long ERR_peek_error(void)
{
return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
}
unsigned long ERR_peek_error_line(const char **file, int *line)
{
return (get_error_values(0, 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, 0, file, line, data, flags));
}
unsigned long ERR_peek_last_error(void)
{
return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
}
unsigned long ERR_peek_last_error_line(const char **file, int *line)
{
return (get_error_values(0, 1, file, line, NULL, NULL));
}
unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
const char **data, int *flags)
{
return (get_error_values(0, 1, file, line, data, flags));
}
static unsigned long get_error_values(int inc, int top, const char **file,
int *line, const char **data,
int *flags)
{
int i = 0;
ERR_STATE *es;
unsigned long ret;
es = ERR_get_state();
if (inc && top) {
if (file)
*file = "";
if (line)
*line = 0;
if (data)
*data = "";
if (flags)
*flags = 0;
return ERR_R_INTERNAL_ERROR;
}
if (es->bottom == es->top)
return 0;
if (top)
i = es->top; /* last error */
else
i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
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 (inc) {
err_clear_data(es, i);
}
} else {
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_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;
err_clear_data(es, i);
es->err_data[i] = data;
es->err_data_flags[i] = flags;
}
void ERR_add_error_data(int num, ...)
{
va_list args;
int i, n, s;
char *str, *p, *a;
s = 80;
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);
goto err;
} else
str = p;
}
BUF_strlcat(str, a, (size_t)s + 1);
}
}
ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
err:
va_end(args);
}
int ERR_set_mark(void)
{
ERR_STATE *es;
es = ERR_get_state();
if (es->bottom == es->top)
return 0;
es->err_flags[es->top] |= ERR_FLAG_MARK;
return 1;
}
int ERR_pop_to_mark(void)
{
ERR_STATE *es;
es = ERR_get_state();
while (es->bottom != es->top
&& (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
err_clear(es, es->top);
es->top -= 1;
if (es->top == -1)
es->top = ERR_NUM_ERRORS - 1;
}
if (es->bottom == es->top)
return 0;
es->err_flags[es->top] &= ~ERR_FLAG_MARK;
return 1;
}
#ifdef OPENSSL_FIPS
static ERR_STATE *fget_state(void)
{
static ERR_STATE fstate;
return &fstate;
}
ERR_STATE *(*get_state_func) (void) = fget_state;
void (*remove_state_func) (unsigned long pid);
ERR_STATE *ERR_get_state(void)
{
return get_state_func();
}
void int_ERR_set_state_func(ERR_STATE *(*get_func) (void),
void (*remove_func) (unsigned long pid))
{
get_state_func = get_func;
remove_state_func = remove_func;
}
void ERR_remove_state(unsigned long pid)
{
if (remove_state_func)
remove_state_func(pid);
}
#endif
