/* $OpenBSD: err.c,v 1.48 2019/10/17 14:28:53 jsing Exp $ */
/* 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 <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <openssl/opensslconf.h>
#include <openssl/bio.h>
#include <openssl/buffer.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/lhash.h>
DECLARE_LHASH_OF(ERR_STRING_DATA);
DECLARE_LHASH_OF(ERR_STATE);
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_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_GOST,0,0), "GOST 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), "ioctl"},
{ERR_PACK(0,SYS_F_BIND, 0), "bind"},
{ERR_PACK(0,SYS_F_LISTEN, 0), "listen"},
{ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"},
{ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"},
{ERR_PACK(0,SYS_F_FREAD, 0), "fread"},
{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_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"},
{0, NULL},
};
#endif
/* Define the predeclared (but externally opaque) "ERR_FNS" type */
struct st_ERR_FNS {
/* Works on the "error_hash" string table */
LHASH_OF(ERR_STRING_DATA) *(*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_OF(ERR_STATE) *(*cb_thread_get)(int create);
void (*cb_thread_release)(LHASH_OF(ERR_STATE) **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_OF(ERR_STRING_DATA) *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_OF(ERR_STATE) *int_thread_get(int create);
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 *);
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_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 pthread_t err_init_thread;
/* 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 get_error_values(int inc, int top, const char **file,
int *line, const char **data, int *flags);
/* The internal functions used in the "err_defaults" implementation */
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 IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA)
static int
err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b)
{
return (int)(a->error - b->error);
}
static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA)
static
LHASH_OF(ERR_STRING_DATA) *int_err_get(int create)
{
LHASH_OF(ERR_STRING_DATA) *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_ERR_STRING_DATA_new();
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_ERR_STRING_DATA_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_OF(ERR_STRING_DATA) *hash;
err_fns_check();
hash = ERRFN(err_get)(0);
if (!hash)
return NULL;
CRYPTO_r_lock(CRYPTO_LOCK_ERR);
p = lh_ERR_STRING_DATA_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_OF(ERR_STRING_DATA) *hash;
err_fns_check();
hash = ERRFN(err_get)(1);
if (!hash)
return NULL;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
p = lh_ERR_STRING_DATA_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_OF(ERR_STRING_DATA) *hash;
err_fns_check();
hash = ERRFN(err_get)(0);
if (!hash)
return NULL;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
p = lh_ERR_STRING_DATA_delete(hash, d);
CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
return p;
}
static unsigned long
err_state_hash(const ERR_STATE *a)
{
return CRYPTO_THREADID_hash(&a->tid) * 13;
}
static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE)
static int
err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
{
return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
}
static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE)
static
LHASH_OF(ERR_STATE) *int_thread_get(int create)
{
LHASH_OF(ERR_STATE) *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_ERR_STATE_new();
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_OF(ERR_STATE) **hash)
{
int i;
if (hash == NULL || *hash == NULL)
return;
i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
if (i > 0)
return;
*hash = NULL;
}
static ERR_STATE *
int_thread_get_item(const ERR_STATE *d)
{
ERR_STATE *p;
LHASH_OF(ERR_STATE) *hash;
err_fns_check();
hash = ERRFN(thread_get)(0);
if (!hash)
return NULL;
CRYPTO_r_lock(CRYPTO_LOCK_ERR);
p = lh_ERR_STATE_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_OF(ERR_STATE) *hash;
err_fns_check();
hash = ERRFN(thread_get)(1);
if (!hash)
return NULL;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
p = lh_ERR_STATE_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_OF(ERR_STATE) *hash;
err_fns_check();
hash = ERRFN(thread_get)(0);
if (!hash)
return;
CRYPTO_w_lock(CRYPTO_LOCK_ERR);
p = lh_ERR_STATE_delete(hash, d);
/* make sure we don't leak memory */
if (int_thread_hash_references == 1 &&
int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) {
lh_ERR_STATE_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;
}
#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 SYSerror(which always gets an errno
* value and never one of those 'standard' reason codes. */
static void
build_SYS_str_reasons(void)
{
/* malloc cannot be used here, use static storage instead */
static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
int i;
static int init = 1;
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]);
const char *src = strerror(i);
if (src != NULL) {
strlcpy(*dest, src, sizeof *dest);
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[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; \
} 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);
}
free(s);
}
void
ERR_load_ERR_strings_internal(void)
{
err_init_thread = pthread_self();
err_fns_check();
#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
}
void
ERR_load_ERR_strings(void)
{
static pthread_once_t once = PTHREAD_ONCE_INIT;
if (pthread_equal(pthread_self(), err_init_thread))
return; /* don't recurse */
/* Prayer and clean living lets you ignore errors, OpenSSL style */
(void) OPENSSL_init_crypto(0, NULL);
(void) pthread_once(&once, ERR_load_ERR_strings_internal);
}
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_load_ERR_strings();
err_load_strings(lib, str);
}
void
ERR_unload_strings(int lib, ERR_STRING_DATA *str)
{
/* Prayer and clean living lets you ignore errors, OpenSSL style */
(void) OPENSSL_init_crypto(0, NULL);
while (str->error) {
if (lib)
str->error |= ERR_PACK(lib, 0, 0);
ERRFN(err_del_item)(str);
str++;
}
}
void
ERR_free_strings(void)
{
/* Prayer and clean living lets you ignore errors, OpenSSL style */
(void) OPENSSL_init_crypto(0, NULL);
err_fns_check();
ERRFN(err_del)();
}
/********************************************************/
void
ERR_put_error(int lib, int func, int reason, const char *file, int line)
{
ERR_STATE *es;
int save_errno = errno;
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);
errno = save_errno;
}
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[30], fsbuf[30], rsbuf[30];
const char *ls, *fs, *rs;
int l, f, r, ret;
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) {
(void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l);
ls = lsbuf;
}
if (fs == NULL) {
(void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f);
fs = fsbuf;
}
if (rs == NULL) {
(void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r);
rs = rsbuf;
}
ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
if (ret == -1)
return; /* can't happen, and can't do better if it does */
if (ret >= len) {
/* 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)
{
err_fns_check();
return ERRFN(err_get)(0);
}
LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
{
err_fns_check();
return ERRFN(thread_get)(0);
}
void
ERR_release_err_state_table(LHASH_OF(ERR_STATE) **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;
if (!OPENSSL_init_crypto(0, NULL))
return NULL;
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);
}
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);
err_fns_check();
/* thread_del_item automatically destroys the LHASH if the number of
* items reaches zero. */
ERRFN(thread_del_item)(&tmp);
}
#ifndef OPENSSL_NO_DEPRECATED
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;
err_fns_check();
CRYPTO_THREADID_current(&tid);
CRYPTO_THREADID_cpy(&tmp.tid, &tid);
ret = ERRFN(thread_get_item)(&tmp);
/* ret == the error state, if NULL, make a new one */
if (ret == NULL) {
ret = malloc(sizeof(ERR_STATE));
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 = 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;
}
int
ERR_get_next_error_library(void)
{
err_fns_check();
return ERRFN(get_next_lib)();
}
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_asprintf_error_data(char * format, ...)
{
char *errbuf = NULL;
va_list ap;
int r;
va_start(ap, format);
r = vasprintf(&errbuf, format, ap);
va_end(ap);
if (r == -1)
ERR_set_error_data("malloc failed", ERR_TXT_STRING);
else
ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
}
void
ERR_add_error_vdata(int num, va_list args)
{
char format[129];
char *errbuf;
int i;
format[0] = '\0';
for (i = 0; i < num; i++) {
if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) {
ERR_set_error_data("too many errors", ERR_TXT_STRING);
return;
}
}
if (vasprintf(&errbuf, format, args) == -1)
ERR_set_error_data("malloc failed", ERR_TXT_STRING);
else
ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
}
void
ERR_add_error_data(int num, ...)
{
va_list args;
va_start(args, num);
ERR_add_error_vdata(num, args);
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;
}
void
err_clear_last_constant_time(int clear)
{
ERR_STATE *es;
int top;
es = ERR_get_state();
if (es == NULL)
return;
top = es->top;
es->err_flags[top] &= ~(0 - clear);
es->err_buffer[top] &= ~(0UL - clear);
es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] &
~((uintptr_t)0 - clear));
es->err_line[top] |= 0 - clear;
es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS;
}