-/* 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) 1998-2006 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).
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
+/* TODO: When ERR_STATE becomes opaque, this musts be removed */
+#define OSSL_FORCE_ERR_STATE
+
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
-#include "internal/cryptlib.h"
-#include <openssl/lhash.h>
+#include "internal/cryptlib_int.h"
+#include "internal/err.h"
+#include "internal/err_int.h"
+#include <openssl/err.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"
+#include "internal/thread_once.h"
+#include "internal/ctype.h"
+#include "internal/constant_time_locl.h"
+#include "e_os.h"
+#include "err_locl.h"
-static void err_load_strings(int lib, ERR_STRING_DATA *str);
+/* Forward declaration in case it's not published because of configuration */
+ERR_STATE *ERR_get_state(void);
+
+static int err_load_strings(const ERR_STRING_DATA *str);
static void ERR_STATE_free(ERR_STATE *s);
#ifndef OPENSSL_NO_ERR
{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_UI, 0, 0), "UI routines"},
{ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
{ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
+ {ERR_PACK(ERR_LIB_CRMF, 0, 0), "CRMF routines"},
+ {ERR_PACK(ERR_LIB_CMP, 0, 0), "CMP routines"},
{ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
+ {ERR_PACK(ERR_LIB_CT, 0, 0), "CT 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(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"},
+ {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"},
+ {ERR_PACK(ERR_LIB_ESS, 0, 0), "ESS routines"},
+ {ERR_PACK(ERR_LIB_PROV, 0, 0), "Provider routines"},
{0, NULL},
};
{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_UI_LIB, "UI lib"},
+ {ERR_R_OSSL_STORE_LIB, "STORE 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_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"},
+ {ERR_R_OPERATION_FAIL, "operation fail"},
{0, NULL},
};
#endif
-/* Predeclarations of the "err_defaults" functions */
-static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit);
+static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
+static int set_err_thread_local;
+static CRYPTO_THREAD_LOCAL err_thread_local;
+
+static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
+static CRYPTO_RWLOCK *err_string_lock;
+
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);
+ int *line, const char **func,
+ 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);
+ ret = l ^ ERR_GET_LIB(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;
+ if (a->error == b->error)
+ return 0;
+ return a->error > b->error ? 1 : -1;
}
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);
+ CRYPTO_THREAD_read_lock(err_string_lock);
+ p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
+ CRYPTO_THREAD_unlock(err_string_lock);
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
+/* 2019-05-21: Russian and Ukrainian locales on Linux require more than 6,5 kB */
+# define SPACE_SYS_STR_REASONS 8 * 1024
# define NUM_SYS_STR_REASONS 127
-# define LEN_SYS_STR_REASON 32
static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
/*
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 char strerror_pool[SPACE_SYS_STR_REASONS];
+ char *cur = strerror_pool;
+ size_t cnt = 0;
static int init = 1;
int i;
+ int saveerrno = get_last_sys_error();
- CRYPTO_r_lock(CRYPTO_LOCK_ERR);
+ CRYPTO_THREAD_write_lock(err_string_lock);
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);
+ CRYPTO_THREAD_unlock(err_string_lock);
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;
+ str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
+ /*
+ * If we have used up all the space in strerror_pool,
+ * there's no point in calling openssl_strerror_r()
+ */
+ if (str->string == NULL && cnt < sizeof(strerror_pool)) {
+ if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
+ size_t l = strlen(cur);
+
+ str->string = cur;
+ cnt += l;
+ cur += l;
+
+ /*
+ * VMS has an unusual quirk of adding spaces at the end of
+ * some (most? all?) messages. Lets trim them off.
+ */
+ while (cur > strerror_pool && ossl_isspace(cur[-1])) {
+ cur--;
+ cnt--;
+ }
+ *cur++ = '\0';
+ cnt++;
}
}
if (str->string == NULL)
init = 0;
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
+ CRYPTO_THREAD_unlock(err_string_lock);
+ /* openssl_strerror_r could change errno, but we want to preserve it */
+ set_sys_error(saveerrno);
+ err_load_strings(SYS_str_reasons);
}
#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);
+ err_clear_data(s, i, 1);
}
OPENSSL_free(s);
}
-void ERR_load_ERR_strings(void)
+DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
{
-#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
+ if (!OPENSSL_init_crypto(0, NULL))
+ return 0;
+ err_string_lock = CRYPTO_THREAD_lock_new();
+ if (err_string_lock == NULL)
+ return 0;
+ int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
+ err_string_data_cmp);
+ if (int_error_hash == NULL) {
+ CRYPTO_THREAD_lock_free(err_string_lock);
+ err_string_lock = NULL;
+ return 0;
+ }
+ return 1;
}
-static void err_load_strings(int lib, ERR_STRING_DATA *str)
+void err_cleanup(void)
{
- LHASH_OF(ERR_STRING_DATA) *hash;
+ if (set_err_thread_local != 0)
+ CRYPTO_THREAD_cleanup_local(&err_thread_local);
+ CRYPTO_THREAD_lock_free(err_string_lock);
+ err_string_lock = NULL;
+ lh_ERR_STRING_DATA_free(int_error_hash);
+ int_error_hash = NULL;
+}
- 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);
+/*
+ * Legacy; pack in the library.
+ */
+static void err_patch(int lib, ERR_STRING_DATA *str)
+{
+ unsigned long plib = ERR_PACK(lib, 0, 0);
+
+ for (; str->error != 0; str++)
+ str->error |= plib;
}
-void ERR_load_strings(int lib, ERR_STRING_DATA *str)
+/*
+ * Hash in |str| error strings. Assumes the URN_ONCE was done.
+ */
+static int err_load_strings(const ERR_STRING_DATA *str)
{
- ERR_load_ERR_strings();
- err_load_strings(lib, str);
+ CRYPTO_THREAD_write_lock(err_string_lock);
+ for (; str->error; str++)
+ (void)lh_ERR_STRING_DATA_insert(int_error_hash,
+ (ERR_STRING_DATA *)str);
+ CRYPTO_THREAD_unlock(err_string_lock);
+ return 1;
}
-void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
+int ERR_load_ERR_strings(void)
{
- LHASH_OF(ERR_STRING_DATA) *hash;
+#ifndef OPENSSL_NO_ERR
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return 0;
- 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);
+ err_load_strings(ERR_str_libraries);
+ err_load_strings(ERR_str_reasons);
+ build_SYS_str_reasons();
+#endif
+ return 1;
}
-void ERR_free_strings(void)
+int ERR_load_strings(int lib, ERR_STRING_DATA *str)
{
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- lh_ERR_STRING_DATA_free(int_error_hash);
- int_error_hash = NULL;
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
+ if (ERR_load_ERR_strings() == 0)
+ return 0;
+
+ err_patch(lib, str);
+ err_load_strings(str);
+ return 1;
}
-/********************************************************/
+int ERR_load_strings_const(const ERR_STRING_DATA *str)
+{
+ if (ERR_load_ERR_strings() == 0)
+ return 0;
+ err_load_strings(str);
+ return 1;
+}
-void ERR_put_error(int lib, int func, int reason, const char *file, int line)
+int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
{
- ERR_STATE *es;
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return 0;
-#ifdef _OSD_POSIX
+ CRYPTO_THREAD_write_lock(err_string_lock);
/*
- * 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.
+ * We don't need to ERR_PACK the lib, since that was done (to
+ * the table) when it was loaded.
*/
- 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();
+ for (; str->error; str++)
+ (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
+ CRYPTO_THREAD_unlock(err_string_lock);
- 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);
+ return 1;
}
+void err_free_strings_int(void)
+{
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return;
+}
+
+/********************************************************/
+
void ERR_clear_error(void)
{
int i;
ERR_STATE *es;
es = ERR_get_state();
+ if (es == NULL)
+ return;
for (i = 0; i < ERR_NUM_ERRORS; i++) {
- err_clear(es, i);
+ err_clear(es, i, 0);
}
es->top = es->bottom = 0;
}
unsigned long ERR_get_error(void)
{
- return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
+ return get_error_values(1, 0, NULL, 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));
+ return get_error_values(1, 0, file, line, NULL, NULL, NULL);
+}
+
+unsigned long ERR_get_error_func(const char **func)
+{
+ return get_error_values(1, 0, NULL, NULL, func, NULL, NULL);
+}
+
+unsigned long ERR_get_error_data(const char **data, int *flags)
+{
+ return get_error_values(1, 0, NULL, NULL, NULL, data, flags);
+}
+
+unsigned long ERR_get_error_all(const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
+{
+ return get_error_values(1, 0, file, line, func, data, flags);
}
+#if !OPENSSL_API_3
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));
+ return get_error_values(1, 0, file, line, NULL, data, flags);
}
+#endif
unsigned long ERR_peek_error(void)
{
- return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
+ return get_error_values(0, 0, NULL, 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));
+ return get_error_values(0, 0, file, line, NULL, NULL, NULL);
}
+unsigned long ERR_peek_error_func(const char **func)
+{
+ return get_error_values(0, 0, NULL, NULL, func, NULL, NULL);
+}
+
+unsigned long ERR_peek_error_data(const char **data, int *flags)
+{
+ return get_error_values(0, 0, NULL, NULL, NULL, data, flags);
+}
+
+unsigned long ERR_peek_error_all(const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
+{
+ return get_error_values(0, 0, file, line, func, data, flags);
+}
+
+#if !OPENSSL_API_3
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));
+ return get_error_values(0, 0, file, line, NULL, data, flags);
}
+#endif
unsigned long ERR_peek_last_error(void)
{
- return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
+ return get_error_values(0, 1, NULL, 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));
+ return get_error_values(0, 1, file, line, NULL, NULL, NULL);
+}
+
+unsigned long ERR_peek_last_error_func(const char **func)
+{
+ return get_error_values(0, 1, NULL, NULL, func, NULL, NULL);
+}
+
+unsigned long ERR_peek_last_error_data(const char **data, int *flags)
+{
+ return get_error_values(0, 1, NULL, NULL, NULL, data, flags);
+}
+
+unsigned long ERR_peek_last_error_all(const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
+{
+ return get_error_values(0, 1, file, line, func, data, flags);
}
+#if !OPENSSL_API_3
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));
+ return get_error_values(0, 1, file, line, NULL, data, flags);
}
+#endif
static unsigned long get_error_values(int inc, int top, const char **file,
- int *line, const char **data,
- int *flags)
+ int *line, const char **func,
+ const char **data, int *flags)
{
int i = 0;
ERR_STATE *es;
unsigned long ret;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
if (inc && top) {
- if (file)
+ if (file != NULL)
*file = "";
- if (line)
+ if (line != NULL)
*line = 0;
- if (data)
+ if (func != NULL)
+ *func = "";
+ if (data != NULL)
*data = "";
- if (flags)
+ if (flags != NULL)
*flags = 0;
return ERR_R_INTERNAL_ERROR;
}
+ while (es->bottom != es->top) {
+ if (es->err_flags[es->top] & ERR_FLAG_CLEAR) {
+ err_clear(es, es->top, 0);
+ es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
+ continue;
+ }
+ i = (es->bottom + 1) % ERR_NUM_ERRORS;
+ if (es->err_flags[i] & ERR_FLAG_CLEAR) {
+ es->bottom = i;
+ err_clear(es, es->bottom, 0);
+ continue;
+ }
+ break;
+ }
+
if (es->bottom == es->top)
return 0;
+
if (top)
i = es->top; /* last error */
else
es->err_buffer[i] = 0;
}
- if ((file != NULL) && (line != NULL)) {
+ if (file != NULL && line != NULL) {
if (es->err_file[i] == NULL) {
*file = "NA";
- if (line != NULL)
- *line = 0;
+ *line = 0;
} else {
*file = es->err_file[i];
- if (line != NULL)
- *line = es->err_line[i];
+ *line = es->err_line[i];
}
}
+ if (func != NULL) {
+ *func = es->err_func[i];
+ if (*func == NULL)
+ *func = "N/A";
+ }
+
if (data == NULL) {
if (inc) {
- err_clear_data(es, i);
+ err_clear_data(es, i, 0);
}
} else {
if (es->err_data[i] == NULL) {
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;
+ char lsbuf[64], rsbuf[64];
+ const char *ls, *rs;
+ unsigned long f = 0, l, r;
- l = ERR_GET_LIB(e);
- f = ERR_GET_FUNC(e);
- r = ERR_GET_REASON(e);
+ if (len == 0)
+ return;
+ l = ERR_GET_LIB(e);
ls = ERR_lib_error_string(e);
- fs = ERR_func_error_string(e);
- rs = ERR_reason_error_string(e);
-
- if (ls == NULL)
+ 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)
+ ls = lsbuf;
+ }
+
+ rs = ERR_reason_error_string(e);
+ r = ERR_GET_REASON(e);
+ if (rs == NULL) {
BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
+ rs = rsbuf;
+ }
- BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf,
- fs ? fs : fsbuf, rs ? rs : rsbuf);
+ BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, "", rs);
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;
- }
- }
+ /* Didn't fit; use a minimal format. */
+ BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r);
}
}
-/* 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
if (ret == NULL)
ret = buf;
- ERR_error_string_n(e, ret, 256);
-
+ ERR_error_string_n(e, ret, (int)sizeof(buf));
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;
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
+ return NULL;
+ }
+
l = ERR_GET_LIB(e);
d.error = ERR_PACK(l, 0, 0);
p = int_err_get_item(&d);
return ((p == NULL) ? NULL : p->string);
}
+#if !OPENSSL_API_3
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);
+ return NULL;
}
+#endif
const char *ERR_reason_error_string(unsigned long e)
{
ERR_STRING_DATA d, *p = NULL;
unsigned long l, r;
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
+ return NULL;
+ }
+
l = ERR_GET_LIB(e);
r = ERR_GET_REASON(e);
d.error = ERR_PACK(l, 0, r);
return ((p == NULL) ? NULL : p->string);
}
-void ERR_remove_thread_state(const CRYPTO_THREADID *id)
+/* TODO(3.0): arg ignored for now */
+static void err_delete_thread_state(void *arg)
{
- ERR_STATE tmp;
+ ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (state == NULL)
+ return;
- 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);
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ ERR_STATE_free(state);
}
-#if OPENSSL_API_COMPAT < 0x10000000L
+#if !OPENSSL_API_1_1_0
+void ERR_remove_thread_state(void *dummy)
+{
+}
+#endif
+
+#if !OPENSSL_API_1_0_0
void ERR_remove_state(unsigned long pid)
{
- ERR_remove_thread_state(NULL);
}
#endif
+DEFINE_RUN_ONCE_STATIC(err_do_init)
+{
+ set_err_thread_local = 1;
+ return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
+}
+
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;
+ ERR_STATE *state;
+ int saveerrno = get_last_sys_error();
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return NULL;
+
+ if (!RUN_ONCE(&err_init, err_do_init))
+ return NULL;
+
+ state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (state == (ERR_STATE*)-1)
+ return NULL;
+
+ if (state == NULL) {
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
+ return NULL;
+
+ if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ return NULL;
}
- 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 (!ossl_init_thread_start(NULL, NULL, err_delete_thread_state)
+ || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
+ ERR_STATE_free(state);
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ return NULL;
}
- /*
- * 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);
}
- return ret;
+
+ set_sys_error(saveerrno);
+ return state;
+}
+
+/*
+ * err_shelve_state returns the current thread local error state
+ * and freezes the error module until err_unshelve_state is called.
+ */
+int err_shelve_state(void **state)
+{
+ int saveerrno = get_last_sys_error();
+
+ /*
+ * Note, at present our only caller is OPENSSL_init_crypto(), indirectly
+ * via ossl_init_load_crypto_nodelete(), by which point the requested
+ * "base" initialization has already been performed, so the below call is a
+ * NOOP, that re-enters OPENSSL_init_crypto() only to quickly return.
+ *
+ * If are no other valid callers of this function, the call below can be
+ * removed, avoiding the re-entry into OPENSSL_init_crypto(). If there are
+ * potential uses that are not from inside OPENSSL_init_crypto(), then this
+ * call is needed, but some care is required to make sure that the re-entry
+ * remains a NOOP.
+ */
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return 0;
+
+ if (!RUN_ONCE(&err_init, err_do_init))
+ return 0;
+
+ *state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
+ return 0;
+
+ set_sys_error(saveerrno);
+ return 1;
+}
+
+/*
+ * err_unshelve_state restores the error state that was returned
+ * by err_shelve_state previously.
+ */
+void err_unshelve_state(void* state)
+{
+ if (state != (void*)-1)
+ CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
}
int ERR_get_next_error_library(void)
{
int ret;
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
+ return 0;
+
+ CRYPTO_THREAD_write_lock(err_string_lock);
ret = int_err_library_number++;
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
+ CRYPTO_THREAD_unlock(err_string_lock);
return ret;
}
-void ERR_set_error_data(char *data, int flags)
+static int err_set_error_data_int(char *data, size_t size, int flags,
+ int deallocate)
{
ERR_STATE *es;
- int i;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
- i = es->top;
- if (i == 0)
- i = ERR_NUM_ERRORS - 1;
+ err_clear_data(es, es->top, deallocate);
+ err_set_data(es, es->top, data, size, flags);
+
+ return 1;
+}
- err_clear_data(es, i);
- es->err_data[i] = data;
- es->err_data_flags[i] = flags;
+void ERR_set_error_data(char *data, int flags)
+{
+ /*
+ * This function is void so we cannot propagate the error return. Since it
+ * is also in the public API we can't change the return type.
+ *
+ * We estimate the size of the data. If it's not flagged as allocated,
+ * then this is safe, and if it is flagged as allocated, then our size
+ * may be smaller than the actual allocation, but that doesn't matter
+ * too much, the buffer will remain untouched or will eventually be
+ * reallocated to a new size.
+ *
+ * callers should be advised that this function takes over ownership of
+ * the allocated memory, i.e. they can't count on the pointer to remain
+ * valid.
+ */
+ err_set_error_data_int(data, strlen(data) + 1, flags, 1);
}
void ERR_add_error_data(int num, ...)
void ERR_add_error_vdata(int num, va_list args)
{
- int i, n, s;
- char *str, *p, *a;
+ int i, len, size;
+ int flags = ERR_TXT_MALLOCED | ERR_TXT_STRING;
+ char *str, *arg;
+ ERR_STATE *es;
- s = 80;
- str = OPENSSL_malloc(s + 1);
- if (str == NULL)
+ /* Get the current error data; if an allocated string get it. */
+ es = ERR_get_state();
+ if (es == 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;
+ i = es->top;
+
+ /*
+ * If err_data is allocated already, re-use the space.
+ * Otherwise, allocate a small new buffer.
+ */
+ if ((es->err_data_flags[i] & flags) == flags) {
+ str = es->err_data[i];
+ size = es->err_data_size[i];
+
+ /*
+ * To protect the string we just grabbed from tampering by other
+ * functions we may call, or to protect them from freeing a pointer
+ * that may no longer be valid at that point, we clear away the
+ * data pointer and the flags. We will set them again at the end
+ * of this function.
+ */
+ es->err_data[i] = NULL;
+ es->err_data_flags[i] = 0;
+ } else if ((str = OPENSSL_malloc(size = 81)) == NULL) {
+ return;
+ } else {
+ str[0] = '\0';
+ }
+ len = strlen(str);
+
+ while (--num >= 0) {
+ arg = va_arg(args, char *);
+ if (arg == NULL)
+ arg = "<NULL>";
+ len += strlen(arg);
+ if (len >= size) {
+ char *p;
+
+ size = len + 20;
+ p = OPENSSL_realloc(str, size);
+ if (p == NULL) {
+ OPENSSL_free(str);
+ return;
}
- OPENSSL_strlcat(str, a, (size_t)s + 1);
+ str = p;
}
+ OPENSSL_strlcat(str, arg, (size_t)size);
}
- ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
+ if (!err_set_error_data_int(str, size, flags, 0))
+ OPENSSL_free(str);
}
int ERR_set_mark(void)
ERR_STATE *es;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
if (es->bottom == es->top)
return 0;
ERR_STATE *es;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
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;
+ err_clear(es, es->top, 0);
+ es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
}
if (es->bottom == es->top)
es->err_flags[es->top] &= ~ERR_FLAG_MARK;
return 1;
}
+
+int ERR_clear_last_mark(void)
+{
+ ERR_STATE *es;
+ int top;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return 0;
+
+ top = es->top;
+ while (es->bottom != top
+ && (es->err_flags[top] & ERR_FLAG_MARK) == 0) {
+ top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1;
+ }
+
+ if (es->bottom == top)
+ return 0;
+ es->err_flags[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;
+
+ /*
+ * Flag error as cleared but remove it elsewhere to avoid two errors
+ * accessing the same error stack location, revealing timing information.
+ */
+ clear = constant_time_select_int(constant_time_eq_int(clear, 0),
+ 0, ERR_FLAG_CLEAR);
+ es->err_flags[top] |= clear;
+}
projects / openssl.git / blobdiff