Cleanup CRYPTO_{push,pop}_info
[openssl.git] / crypto / err / err.c
index 9b4eb612ed88a2868417e6d509c3ead3619b9c07..e487e980cb94cf861423de11cf342b5c4f0c729c 100644 (file)
@@ -5,21 +5,21 @@
  * 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:
  *     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 
+ * 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
  * 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.h"
 #include <openssl/lhash.h>
 #include <openssl/crypto.h>
-#include "cryptlib.h"
 #include <openssl/buffer.h>
+#include <openssl/bio.h>
 #include <openssl/err.h>
-#include <openssl/crypto.h>
 
+DECLARE_LHASH_OF(ERR_STRING_DATA);
+DECLARE_LHASH_OF(ERR_STATE);
 
-static LHASH *error_hash=NULL;
-static LHASH *thread_hash=NULL;
+static void err_load_strings(int lib, ERR_STRING_DATA *str);
 
-static unsigned long err_hash(ERR_STRING_DATA *a);
-static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b);
-static unsigned long pid_hash(ERR_STATE *pid);
-static int pid_cmp(ERR_STATE *a,ERR_STATE *pid);
-static unsigned long get_error_values(int inc,const char **file,int *line,
-                                     const char **data,int *flags);
 static void ERR_STATE_free(ERR_STATE *s);
-#ifndef NO_ERR
-static ERR_STRING_DATA ERR_str_libraries[]=
-       {
-{ERR_PACK(ERR_LIB_NONE,0,0)            ,"unknown library"},
-{ERR_PACK(ERR_LIB_SYS,0,0)             ,"system library"},
-{ERR_PACK(ERR_LIB_BN,0,0)              ,"bignum routines"},
-{ERR_PACK(ERR_LIB_RSA,0,0)             ,"rsa routines"},
-{ERR_PACK(ERR_LIB_DH,0,0)              ,"Diffie-Hellman routines"},
-{ERR_PACK(ERR_LIB_EVP,0,0)             ,"digital envelope routines"},
-{ERR_PACK(ERR_LIB_BUF,0,0)             ,"memory buffer routines"},
-{ERR_PACK(ERR_LIB_BIO,0,0)             ,"BIO routines"},
-{ERR_PACK(ERR_LIB_OBJ,0,0)             ,"object identifier routines"},
-{ERR_PACK(ERR_LIB_PEM,0,0)             ,"PEM routines"},
-{ERR_PACK(ERR_LIB_ASN1,0,0)            ,"asn1 encoding routines"},
-{ERR_PACK(ERR_LIB_X509,0,0)            ,"x509 certificate routines"},
-{ERR_PACK(ERR_LIB_CONF,0,0)            ,"configuation file routines"},
-{ERR_PACK(ERR_LIB_METH,0,0)            ,"X509 lookup 'method' routines"},
-{ERR_PACK(ERR_LIB_SSL,0,0)             ,"SSL routines"},
-{ERR_PACK(ERR_LIB_RSAREF,0,0)          ,"RSAref routines"},
-{ERR_PACK(ERR_LIB_PROXY,0,0)           ,"Proxy routines"},
-{ERR_PACK(ERR_LIB_BIO,0,0)             ,"BIO routines"},
-{ERR_PACK(ERR_LIB_PKCS7,0,0)           ,"PKCS7 routines"},
-{ERR_PACK(ERR_LIB_X509V3,0,0)          ,"X509 V3 routines"},
-{ERR_PACK(ERR_LIB_PKCS12,0,0)          ,"PKCS12 routines"},
-{ERR_PACK(ERR_LIB_RAND,0,0)            ,"random number generator"},
-{0,NULL},
-       };
-
-static ERR_STRING_DATA ERR_str_functs[]=
-       {
-       {ERR_PACK(0,SYS_F_FOPEN,0),             "fopen"},
-       {ERR_PACK(0,SYS_F_CONNECT,0),           "connect"},
-       {ERR_PACK(0,SYS_F_GETSERVBYNAME,0),     "getservbyname"},
-       {ERR_PACK(0,SYS_F_SOCKET,0),            "socket"}, 
-       {ERR_PACK(0,SYS_F_IOCTLSOCKET,0),       "ioctlsocket"},
-       {ERR_PACK(0,SYS_F_BIND,0),              "bind"},
-       {ERR_PACK(0,SYS_F_LISTEN,0),            "listen"},
-       {ERR_PACK(0,SYS_F_ACCEPT,0),            "accept"},
-#ifdef WINDOWS
-       {ERR_PACK(0,SYS_F_WSASTARTUP,0),        "WSAstartup"},
+#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"},
+    {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"},
+
+    {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;
+
+/*
+ * 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);
+
+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) *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();
+    }
+    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 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, 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();
+    }
+    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
-       {ERR_PACK(0,SYS_F_OPENDIR,0),           "opendir"},
-       {0,NULL},
-       };
-
-static ERR_STRING_DATA ERR_str_reasons[]=
-       {
-{ERR_R_FATAL                             ,"fatal"},
-{ERR_R_SYS_LIB                         ,"system lib"},
-{ERR_R_BN_LIB                          ,"BN lib"},
-{ERR_R_RSA_LIB                         ,"RSA lib"},
-{ERR_R_DH_LIB                          ,"DH lib"},
-{ERR_R_EVP_LIB                         ,"EVP lib"},
-{ERR_R_BUF_LIB                         ,"BUF lib"},
-{ERR_R_BIO_LIB                         ,"BIO lib"},
-{ERR_R_OBJ_LIB                         ,"OBJ lib"},
-{ERR_R_PEM_LIB                         ,"PEM lib"},
-{ERR_R_X509_LIB                                ,"X509 lib"},
-{ERR_R_METH_LIB                                ,"METH lib"},
-{ERR_R_ASN1_LIB                                ,"ASN1 lib"},
-{ERR_R_CONF_LIB                                ,"CONF lib"},
-{ERR_R_SSL_LIB                         ,"SSL lib"},
-{ERR_R_PROXY_LIB                       ,"PROXY lib"},
-{ERR_R_BIO_LIB                         ,"BIO lib"},
-{ERR_R_PKCS7_LIB                       ,"PKCS7 lib"},
-{ERR_R_PKCS12_LIB                      ,"PKCS12 lib"},
-{ERR_R_MALLOC_FAILURE                  ,"Malloc failure"},
-{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED     ,"called a function you should not call"},
-{ERR_R_PASSED_NULL_PARAMETER           ,"passed a null parameter"},
-{ERR_R_NESTED_ASN1_ERROR               ,"nested asn1 error"},
-{ERR_R_BAD_ASN1_OBJECT_HEADER          ,"bad asn1 object header"},
-{ERR_R_BAD_GET_ASN1_OBJECT_CALL                ,"bad get asn1 object call"},
-{ERR_R_EXPECTING_AN_ASN1_SEQUENCE      ,"expecting an asn1 sequence"},
-{ERR_R_ASN1_LENGTH_MISMATCH            ,"asn1 length mismatch"},
-{ERR_R_MISSING_ASN1_EOS                        ,"missing asn1 eos"},
-
-{0,NULL},
-       };
+    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) {
+            lh_ERR_STATE_free(int_thread_hash);
+            int_thread_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) \
-       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;
+        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;
+{
+    int i;
 
-       if(s == NULL)
-           return;
+    if (s == NULL)
+        return;
 
-       for (i=0; i<ERR_NUM_ERRORS; i++)
-               {
-               err_clear_data(s,i);
-               }
-       Free(s);
-       }
+    for (i = 0; i < ERR_NUM_ERRORS; i++) {
+        err_clear_data(s, i);
+    }
+    OPENSSL_free(s);
+}
 
 void ERR_load_ERR_strings(void)
-       {
-       static int init=1;
-
-       if (init)
-               {
-               CRYPTO_w_lock(CRYPTO_LOCK_ERR);
-               if (init == 0)
-                       {
-                       CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-                       return;
-                       }
-               init=0;
-               CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-
-#ifndef NO_ERR
-               ERR_load_strings(0,ERR_str_libraries);
-               ERR_load_strings(0,ERR_str_reasons);
-               ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);
+{
+#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)
-       {
-       if (error_hash == NULL)
-               {
-               CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
-               error_hash=lh_new(err_hash,err_cmp);
-               if (error_hash == NULL)
-                       {
-                       CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
-                       return;
-                       }
-               CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
-
-               ERR_load_ERR_strings();
-               }
-
-       CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
-       while (str->error)
-               {
-               str->error|=ERR_PACK(lib,0,0);
-               lh_insert(error_hash,str);
-               str++;
-               }
-       CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
-       }
+{
+    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);
-
-       if (error_hash != NULL)
-               {
-               lh_free(error_hash);
-               error_hash=NULL;
-               }
-
-       CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-       }
+{
+    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;
+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];
-       }
+    /*
+     * In the BS2000-OSD POSIX subsystem, the compiler generates path names
+     * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
+     * something sensible. @@@ We shouldn't modify a const string, though.
+     */
+    if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
+        char *end;
+
+        /* Skip the "*POSIX(" prefix */
+        file += sizeof("*POSIX(") - 1;
+        end = &file[strlen(file) - 1];
+        if (*end == ')')
+            *end = '\0';
+        /* Optional: use the basename of the path only. */
+        if ((end = strrchr(file, '/')) != NULL)
+            file = &end[1];
+    }
 #endif
-       es=ERR_get_state();
-
-       es->top=(es->top+1)%ERR_NUM_ERRORS;
-       if (es->top == es->bottom)
-               es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
-       es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
-       es->err_file[es->top]=file;
-       es->err_line[es->top]=line;
-       err_clear_data(es,es->top);
-       }
+    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)
-       {
-       ERR_STATE *es;
-
-       es=ERR_get_state();
-
-#if 0
-       /* hmm... is this needed */
-       for (i=0; i<ERR_NUM_ERRORS; i++)
-               {
-               es->err_buffer[i]=0;
-               es->err_file[i]=NULL;
-               es->err_line[i]= -1;
-               err_clear_data(es,i);
-               }
-#endif
-       es->top=es->bottom=0;
-       }
+{
+    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,NULL,NULL,NULL,NULL)); }
+{
+    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,file,line,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,file,line,
-            data,flags)); }
+                                      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,NULL,NULL,NULL,NULL)); }
+{
+    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,file,line,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,file,line,
-            data,flags)); }
-
-static unsigned long get_error_values(int inc, const char **file, int *line,
-            const char **data, int *flags)
-       {       
-       int i=0;
-       ERR_STATE *es;
-       unsigned long ret;
-
-       es=ERR_get_state();
-
-       if (es->bottom == es->top) return(0);
-       i=(es->bottom+1)%ERR_NUM_ERRORS;
-
-       ret=es->err_buffer[i];
-       if (inc)
-               {
-               es->bottom=i;
-               es->err_buffer[i]=0;
-               }
-
-       if ((file != NULL) && (line != NULL))
-               {
-               if (es->err_file[i] == NULL)
-                       {
-                       *file="NA";
-                       if (line != NULL) *line=0;
-                       }
-               else
-                       {
-                       *file=es->err_file[i];
-                       if (line != NULL) *line=es->err_line[i];
-                       }
-               }
-
-       if (data != NULL)
-               {
-               if (es->err_data[i] == NULL)
-                       {
-                       *data="";
-                       if (flags != NULL) *flags=0;
-                       }
-               else
-                       {
-                       *data=es->err_data[i];
-                       if (flags != NULL) *flags=es->err_data_flags[i];
-                       }
-               }
-       return(ret);
-       }
-
-/* BAD for multi-threaded, uses a local buffer if ret == NULL */
+                                       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];
-       const char *ls,*fs,*rs;
-       unsigned long l,f,r;
-       int i;
-
-       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 (ret == NULL) ret=buf;
-
-       sprintf(&(ret[0]),"error:%08lX:",e);
-       i=strlen(ret);
-       if (ls == NULL)
-               sprintf(&(ret[i]),":lib(%lu) ",l);
-       else    sprintf(&(ret[i]),"%s",ls);
-       i=strlen(ret);
-       if (fs == NULL)
-               sprintf(&(ret[i]),":func(%lu) ",f);
-       else    sprintf(&(ret[i]),":%s",fs);
-       i=strlen(ret);
-       if (rs == NULL)
-               sprintf(&(ret[i]),":reason(%lu)",r);
-       else    sprintf(&(ret[i]),":%s",rs);
-
-       return(ret);
-       }
-
-LHASH *ERR_get_string_table(void)
-       {
-       return(error_hash);
-       }
-
-LHASH *ERR_get_err_state_table(void)
-       {
-       return(thread_hash);
-       }
+{
+    static char buf[256];
 
-const char *ERR_lib_error_string(unsigned long e)
-       {
-       ERR_STRING_DATA d,*p=NULL;
-       unsigned long l;
-
-       l=ERR_GET_LIB(e);
-
-       CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
+    if (ret == NULL)
+        ret = buf;
+    ERR_error_string_n(e, ret, 256);
 
-       if (error_hash != NULL)
-               {
-               d.error=ERR_PACK(l,0,0);
-               p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
-               }
+    return ret;
+}
 
-       CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
+LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
+{
+    return get_hash(0, 1);
+}
 
-       return((p == NULL)?NULL:p->string);
-       }
+LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
+{
+    return int_thread_get(0, 1);
+}
 
-const char *ERR_func_error_string(unsigned long e)
-       {
-       ERR_STRING_DATA d,*p=NULL;
-       unsigned long l,f;
-
-       l=ERR_GET_LIB(e);
-       f=ERR_GET_FUNC(e);
+void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
+{
+    int_thread_release(hash);
+}
 
-       CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
+const char *ERR_lib_error_string(unsigned long e)
+{
+    ERR_STRING_DATA d, *p;
+    unsigned long l;
 
-       if (error_hash != NULL)
-               {
-               d.error=ERR_PACK(l,f,0);
-               p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
-               }
+    l = ERR_GET_LIB(e);
+    d.error = ERR_PACK(l, 0, 0);
+    p = int_err_get_item(&d);
+    return ((p == NULL) ? NULL : p->string);
+}
 
-       CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
+const char *ERR_func_error_string(unsigned long e)
+{
+    ERR_STRING_DATA d, *p;
+    unsigned long l, f;
 
-       return((p == NULL)?NULL:p->string);
-       }
+    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);
-
-       CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
-
-       if (error_hash != NULL)
-               {
-               d.error=ERR_PACK(l,0,r);
-               p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
-               if (p == NULL)
-                       {
-                       d.error=ERR_PACK(0,0,r);
-                       p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d);
-                       }
-               }
-
-       CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
-
-       return((p == NULL)?NULL:p->string);
-       }
-
-static unsigned long err_hash(ERR_STRING_DATA *a)
-       {
-       unsigned long ret,l;
-
-       l=a->error;
-       ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
-       return(ret^ret%19*13);
-       }
-
-static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b)
-       {
-       return((int)(a->error-b->error));
-       }
-
-static unsigned long pid_hash(ERR_STATE *a)
-       {
-       return(a->pid*13);
-       }
-
-static int pid_cmp(ERR_STATE *a, ERR_STATE *b)
-       {
-       return((int)((long)a->pid - (long)b->pid));
-       }
-
+{
+    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);
+}
+
+#ifndef OPENSSL_NO_DEPRECATED
 void ERR_remove_state(unsigned long pid)
-       {
-       ERR_STATE *p,tmp;
-
-       if (thread_hash == NULL)
-               return;
-       if (pid == 0)
-               pid=(unsigned long)CRYPTO_thread_id();
-       tmp.pid=pid;
-       CRYPTO_w_lock(CRYPTO_LOCK_ERR);
-       p=(ERR_STATE *)lh_delete(thread_hash,&tmp);
-       CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-
-       if (p != NULL) ERR_STATE_free(p);
-       }
+{
+    ERR_remove_thread_state(NULL);
+}
+#endif
 
 ERR_STATE *ERR_get_state(void)
-       {
-       static ERR_STATE fallback;
-       ERR_STATE *ret=NULL,tmp,*tmpp;
-       int i;
-       unsigned long pid;
-
-       pid=(unsigned long)CRYPTO_thread_id();
-
-       CRYPTO_r_lock(CRYPTO_LOCK_ERR);
-       if (thread_hash == NULL)
-               {
-               CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
-               CRYPTO_w_lock(CRYPTO_LOCK_ERR);
-               if (thread_hash == NULL)
-                       {
-                       MemCheck_off();
-                       thread_hash=lh_new(pid_hash,pid_cmp);
-                       MemCheck_on();
-                       CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-                       if (thread_hash == NULL) return(&fallback);
-                       }
-               else
-                       CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-               }
-       else
-               {
-               tmp.pid=pid;
-               ret=(ERR_STATE *)lh_retrieve(thread_hash,&tmp);
-               CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
-               }
-
-       /* ret == the error state, if NULL, make a new one */
-       if (ret == NULL)
-               {
-               ret=(ERR_STATE *)Malloc(sizeof(ERR_STATE));
-               if (ret == NULL) return(&fallback);
-               ret->pid=pid;
-               ret->top=0;
-               ret->bottom=0;
-               for (i=0; i<ERR_NUM_ERRORS; i++)
-                       {
-                       ret->err_data[i]=NULL;
-                       ret->err_data_flags[i]=0;
-                       }
-               CRYPTO_w_lock(CRYPTO_LOCK_ERR);
-               tmpp=(ERR_STATE *)lh_insert(thread_hash,ret);
-               CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-               if (tmpp != NULL) /* old entry - should not happen */
-                       {
-                       ERR_STATE_free(tmpp);
-                       }
-               }
-       return(ret);
-       }
+{
+    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);
+    }
+    return ret;
+}
 
 int ERR_get_next_error_library(void)
-       {
-       static int value=ERR_LIB_USER;
+{
+    int ret;
 
-       return(value++);
-       }
+    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;
+{
+    ERR_STATE *es;
+    int i;
 
-       es=ERR_get_state();
+    es = ERR_get_state();
 
-       i=es->top;
-       if (i == 0)
-               i=ERR_NUM_ERRORS-1;
+    i = es->top;
+    if (i == 0)
+        i = ERR_NUM_ERRORS - 1;
 
-       es->err_data[i]=data;
-       es->err_data_flags[es->top]=flags;
-       }
+    err_clear_data(es, i);
+    es->err_data[i] = data;
+    es->err_data_flags[i] = flags;
+}
 
 void ERR_add_error_data(int num, ...)
-       {
-       va_list args;
-       int i,n,s;
-       char *str,*p,*a;
-
-       s=64;
-       str=Malloc(s+1);
-       if (str == NULL) return;
-       str[0]='\0';
-
-       va_start(args, num);
-       n=0;
-       for (i=0; i<num; i++)
-               {
-               a=va_arg(args, char*);
-               /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
-               if (a != NULL)
-                       {
-                       n+=strlen(a);
-                       if (n > s)
-                               {
-                               s=n+20;
-                               p=Realloc(str,s+1);
-                               if (p == NULL)
-                                       {
-                                       Free(str);
-                                       return;
-                                       }
-                               else
-                                       str=p;
-                               }
-                       strcat(str,a);
-                       }
-               }
-       ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
-
-       va_end(args);
-       }
-
+{
+    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;
+}