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openssl/crypto/err/err.c
Matt Caswell 302f75887e Attempt to log an error if init failed 
If init failed we'd like to set an error code to indicate that. But if
init failed then when the error system tries to load its strings its going
to fail again. We could get into an infinite loop. Therefore we just set
a single error the first time around. After that no error is set.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-10 17:40:59 +00:00

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/* 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) 1998-2006 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 <internal/cryptlib_int.h>
#include <openssl/lhash.h>
#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/opensslconf.h>
#include "err_lcl.h"
static void err_load_strings(int lib, ERR_STRING_DATA *str);
static void ERR_STATE_free(ERR_STATE *s);
#ifndef OPENSSL_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_OBJ, 0, 0), "object identifier routines"},
{ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
{ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
{ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
{ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
{ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
{ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
{ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
{ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
{ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
{ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL 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_TS, 0, 0), "time stamp routines"},
{ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
{ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
{ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
{ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
{ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
{ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC 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 OPENSSL_SYS_WINDOWS
{ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
# endif
{ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
{ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
{ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"},
{ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"},
{ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"},
{ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"},
{ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"},
{ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"},
{0, NULL},
};
static ERR_STRING_DATA ERR_str_reasons[] = {
{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_OBJ_LIB, "OBJ lib"},
{ERR_R_PEM_LIB, "PEM lib"},
{ERR_R_DSA_LIB, "DSA lib"},
{ERR_R_X509_LIB, "X509 lib"},
{ERR_R_ASN1_LIB, "ASN1 lib"},
{ERR_R_CONF_LIB, "CONF lib"},
{ERR_R_CRYPTO_LIB, "CRYPTO lib"},
{ERR_R_EC_LIB, "EC lib"},
{ERR_R_SSL_LIB, "SSL lib"},
{ERR_R_BIO_LIB, "BIO lib"},
{ERR_R_PKCS7_LIB, "PKCS7 lib"},
{ERR_R_X509V3_LIB, "X509V3 lib"},
{ERR_R_PKCS12_LIB, "PKCS12 lib"},
{ERR_R_RAND_LIB, "RAND lib"},
{ERR_R_DSO_LIB, "DSO lib"},
{ERR_R_ENGINE_LIB, "ENGINE lib"},
{ERR_R_OCSP_LIB, "OCSP lib"},
{ERR_R_TS_LIB, "TS lib"},
{ERR_R_ECDSA_LIB, "ECDSA lib"},
{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_FATAL, "fatal"},
{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_INTERNAL_ERROR, "internal error"},
{ERR_R_DISABLED, "called a function that was disabled at compile-time"},
{ERR_R_INIT_FAIL, "init fail"},
{0, NULL},
};
#endif
/* Predeclarations of the "err_defaults" functions */
static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit);
static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit);
static void int_thread_release(LHASH_OF(ERR_STATE) **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 *);
/*
* The internal state
*/
static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
static int int_thread_hash_references = 0;
static int int_err_library_number = ERR_LIB_USER;
static unsigned long get_error_values(int inc, int top, const char **file,
int *line, const char **data,
int *flags);
static unsigned long err_string_data_hash(const 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_string_data_cmp(const ERR_STRING_DATA *a,
const ERR_STRING_DATA *b)
{
return (int)(a->error - b->error);
}
static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit)
{
LHASH_OF(ERR_STRING_DATA) *ret = NULL;
if (lockit)
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
if (!int_error_hash && create) {
int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
err_string_data_cmp);
}
if (int_error_hash != NULL)
ret = int_error_hash;
if (lockit)
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
return ret;
}
static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
{
ERR_STRING_DATA *p = NULL;
LHASH_OF(ERR_STRING_DATA) *hash;
CRYPTO_r_lock(CRYPTO_LOCK_ERR);
hash = get_hash(0, 0);
if (hash)
p = lh_ERR_STRING_DATA_retrieve(hash, d);
CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
return p;
}
static unsigned long err_state_hash(const ERR_STATE *a)
{
return CRYPTO_THREADID_hash(&a->tid) * 13;
}
static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
{
return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
}
static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit)
{
LHASH_OF(ERR_STATE) *ret = NULL;
if (lockit)
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
if (!int_thread_hash && create) {
int_thread_hash = lh_ERR_STATE_new(err_state_hash, err_state_cmp);
}
if (int_thread_hash != NULL) {
int_thread_hash_references++;
ret = int_thread_hash;
}
if (lockit)
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
return ret;
}
static void int_thread_release(LHASH_OF(ERR_STATE) **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 = NULL;
LHASH_OF(ERR_STATE) *hash;
CRYPTO_r_lock(CRYPTO_LOCK_ERR);
hash = int_thread_get(0, 0);
if (hash)
p = lh_ERR_STATE_retrieve(hash, d);
CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
int_thread_release(&hash);
return p;
}
static ERR_STATE *int_thread_set_item(ERR_STATE *d)
{
ERR_STATE *p = NULL;
LHASH_OF(ERR_STATE) *hash;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
hash = int_thread_get(1, 0);
if (hash)
p = lh_ERR_STATE_insert(hash, d);
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
int_thread_release(&hash);
return p;
}
static void int_thread_del_item(const ERR_STATE *d)
{
ERR_STATE *p = NULL;
LHASH_OF(ERR_STATE) *hash;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
hash = int_thread_get(0, 0);
if (hash) {
p = lh_ERR_STATE_delete(hash, d);
/* If there are no other references, and we just removed the
* last item, delete the int_thread_hash */
if (int_thread_hash_references == 1
&& int_thread_hash
&& lh_ERR_STATE_num_items(int_thread_hash) == 0) {
int_thread_hash_references = 0;
lh_ERR_STATE_free(int_thread_hash);
int_thread_hash = NULL;
hash = NULL;
}
}
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
int_thread_release(&hash);
ERR_STATE_free(p);
}
#ifndef OPENSSL_NO_ERR
# 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(void)
{
/* OPENSSL_malloc cannot be used here, use static storage instead */
static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
static int init = 1;
int i;
CRYPTO_r_lock(CRYPTO_LOCK_ERR);
if (!init) {
CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
return;
}
CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
if (!init) {
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
return;
}
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.
*/
init = 0;
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
}
#endif
#define err_clear_data(p,i) \
do { \
if ((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_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)
{
#ifndef OPENSSL_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
}
static void err_load_strings(int lib, ERR_STRING_DATA *str)
{
LHASH_OF(ERR_STRING_DATA) *hash;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
hash = get_hash(1, 0);
if (hash) {
for (; str->error; str++) {
if (lib)
str->error |= ERR_PACK(lib, 0, 0);
(void)lh_ERR_STRING_DATA_insert(hash, str);
}
}
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
}
void ERR_load_strings(int lib, ERR_STRING_DATA *str)
{
ERR_load_ERR_strings();
err_load_strings(lib, str);
}
void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
{
LHASH_OF(ERR_STRING_DATA) *hash;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
hash = get_hash(0, 0);
if (hash) {
for (; str->error; str++) {
if (lib)
str->error |= ERR_PACK(lib, 0, 0);
(void)lh_ERR_STRING_DATA_delete(hash, str);
}
}
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
}
void ERR_free_strings(void)
{
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
lh_ERR_STRING_DATA_free(int_error_hash);
int_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_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_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, ret, 256);
return ret;
}
LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
{
return get_hash(0, 1);
}
LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
{
return int_thread_get(0, 1);
}
void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
{
int_thread_release(hash);
}
const char *ERR_lib_error_string(unsigned long e)
{
ERR_STRING_DATA d, *p;
unsigned long l;
l = ERR_GET_LIB(e);
d.error = ERR_PACK(l, 0, 0);
p = int_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;
l = ERR_GET_LIB(e);
f = ERR_GET_FUNC(e);
d.error = ERR_PACK(l, f, 0);
p = int_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;
l = ERR_GET_LIB(e);
r = ERR_GET_REASON(e);
d.error = ERR_PACK(l, 0, r);
p = int_err_get_item(&d);
if (!p) {
d.error = ERR_PACK(0, 0, r);
p = int_err_get_item(&d);
}
return ((p == NULL) ? NULL : p->string);
}
void ERR_remove_thread_state(const CRYPTO_THREADID *id)
{
ERR_STATE tmp;
if (id)
CRYPTO_THREADID_cpy(&tmp.tid, id);
else
CRYPTO_THREADID_current(&tmp.tid);
/*
* thread_del_item automatically destroys the LHASH if the number of
* items reaches zero.
*/
int_thread_del_item(&tmp);
}
#if OPENSSL_API_COMPAT < 0x10000000L
void ERR_remove_state(unsigned long pid)
{
ERR_remove_thread_state(NULL);
}
#endif
ERR_STATE *ERR_get_state(void)
{
static ERR_STATE fallback;
ERR_STATE *ret, tmp, *tmpp = NULL;
int i;
CRYPTO_THREADID tid;
CRYPTO_THREADID_current(&tid);
CRYPTO_THREADID_cpy(&tmp.tid, &tid);
ret = int_thread_get_item(&tmp);
/* ret == the error state, if NULL, make a new one */
if (ret == NULL) {
ret = OPENSSL_malloc(sizeof(*ret));
if (ret == NULL)
return (&fallback);
CRYPTO_THREADID_cpy(&ret->tid, &tid);
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 = int_thread_set_item(ret);
/* To check if insertion failed, do a get. */
if (int_thread_get_item(ret) != ret) {
ERR_STATE_free(ret); /* could not insert it */
return (&fallback);
}
/*
* If a race occurred in this function and we came second, tmpp is
* the first one that we just replaced.
*/
ERR_STATE_free(tmpp);
/* Ignore failures from these */
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE);
}
return ret;
}
int ERR_get_next_error_library(void)
{
int ret;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
ret = int_err_library_number++;
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
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;
va_start(args, num);
ERR_add_error_vdata(num, args);
va_end(args);
}
void ERR_add_error_vdata(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';
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;
}
str = p;
}
OPENSSL_strlcat(str, a, (size_t)s + 1);
}
}
ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
}
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;
}
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