Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

95 files changed, 11755 insertions, 0 deletions

diff --git a/libmariadb/plugins/CMakeLists.txt b/libmariadb/plugins/CMakeLists.txt
new file mode 100644
index 00000000..3b0e5e83
--- /dev/null
+++ b/libmariadb/plugins/CMakeLists.txt
@@ -0,0 +1,9 @@
+SET(PLUGIN_EXTRA_FILES ${CC_SOURCE_DIR}/libmariadb/ma_errmsg.c)
+
+
+FILE(GLOB plugin_dirs ${CC_SOURCE_DIR}/plugins/*)
+FOREACH(dir ${plugin_dirs})
+  IF (EXISTS ${dir}/CMakeLists.txt)
+    INCLUDE(${dir}/CMakeLists.txt)
+  ENDIF()
+ENDFOREACH()
diff --git a/libmariadb/plugins/auth/CMakeLists.txt b/libmariadb/plugins/auth/CMakeLists.txt
new file mode 100644
index 00000000..0e3b5478
--- /dev/null
+++ b/libmariadb/plugins/auth/CMakeLists.txt
@@ -0,0 +1,132 @@
+SET(AUTH_DIR ${CC_SOURCE_DIR}/plugins/auth)
+
+INCLUDE_DIRECTORIES(${AUTH_DIR})
+INCLUDE_DIRECTORIES(${CC_SOURCE_DIR}/include)
+
+SET(CRYPTO_PLUGIN 1)
+IF(WIN32)
+  SET(CRYPT_SOURCE ${CC_SOURCE_DIR}/libmariadb/secure/win_crypt.c)
+  SET(CRYPT_LIBS crypt32 bcrypt)
+ELSEIF(WITH_SSL STREQUAL "OPENSSL")
+  SET(CRYPT_SOURCE ${CC_SOURCE_DIR}/libmariadb/secure/openssl_crypt.c)
+  SET(CRYPT_LIBS ${SSL_LIBRARIES})
+ELSEIF(WITH_SSL STREQUAL "GNUTLS")
+  SET(CRYPT_SOURCE ${CC_SOURCE_DIR}/libmariadb/secure/gnutls_crypt.c)
+  IF (NOT SSL_LIBRARIES MATCHES "^.*\\.a$")
+    SET(CRYPT_LIBS ${SSL_LIBRARIES})
+  ENDIF()
+ELSE()
+  UNSET(CRYPTO_PLUGIN)
+ENDIF()
+
+#native password
+REGISTER_PLUGIN(TARGET mysql_native_password
+                TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                CONFIGURATIONS STATIC
+                DEFAULT STATIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/auth/my_auth.c)
+
+#Dialog client authentication plugin
+REGISTER_PLUGIN(TARGET dialog
+                TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                CONFIGURATIONS DYNAMIC STATIC OFF
+                DEFAULT DYNAMIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/auth/dialog.c
+                        ${CC_SOURCE_DIR}/libmariadb/get_password.c)
+
+
+# Crypto plugins
+IF(CRYPTO_PLUGIN)
+
+  #ED25519 client authentication plugin
+  SET(REF10_DIR ${CC_SOURCE_DIR}/plugins/auth/ref10)
+  SET(REF10_SOURCES ${REF10_DIR}/fe_0.c ${REF10_DIR}/fe_isnegative.c ${REF10_DIR}/fe_sub.c ${REF10_DIR}/ge_p1p1_to_p2.c
+                    ${REF10_DIR}/ge_p3_to_cached.c ${REF10_DIR}/open.c ${REF10_DIR}/fe_1.c ${REF10_DIR}/fe_isnonzero.c
+                    ${REF10_DIR}/fe_tobytes.c ${REF10_DIR}/ge_p1p1_to_p3.c ${REF10_DIR}/ge_p3_to_p2.c ${REF10_DIR}/sc_muladd.c
+                    ${REF10_DIR}/fe_add.c ${REF10_DIR}/fe_mul.c ${REF10_DIR}/ge_add.c ${REF10_DIR}/ge_p2_0.c ${REF10_DIR}/ge_precomp_0.c
+                    ${REF10_DIR}/sc_reduce.c ${REF10_DIR}/fe_cmov.c ${REF10_DIR}/fe_neg.c ${REF10_DIR}/ge_double_scalarmult.c 
+                    ${REF10_DIR}/ge_p2_dbl.c ${REF10_DIR}/ge_scalarmult_base.c ${REF10_DIR}/sign.c ${REF10_DIR}/fe_copy.c
+                    ${REF10_DIR}/fe_pow22523.c ${REF10_DIR}/ge_frombytes.c ${REF10_DIR}/ge_p3_0.c ${REF10_DIR}/ge_sub.c
+                    ${REF10_DIR}/verify.c ${REF10_DIR}/fe_frombytes.c ${REF10_DIR}/fe_sq2.c ${REF10_DIR}/ge_madd.c
+                    ${REF10_DIR}/ge_p3_dbl.c ${REF10_DIR}/ge_tobytes.c ${REF10_DIR}/fe_invert.c ${REF10_DIR}/fe_sq.c
+                    ${REF10_DIR}/ge_msub.c ${REF10_DIR}/ge_p3_tobytes.c ${REF10_DIR}/keypair.c)
+
+  REGISTER_PLUGIN(TARGET client_ed25519
+                TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                CONFIGURATIONS DYNAMIC STATIC OFF
+                DEFAULT DYNAMIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/auth/ed25519.c 
+                        ${REF10_SOURCES}
+                        ${CRYPT_SOURCE}
+                INCLUDES ${REF10_DIR}
+                LIBRARIES ${CRYPT_LIBS}
+                COMPILE_OPTIONS -DMYSQL_CLIENT=1)
+  IF(MSVC)
+     # Silence conversion (integer truncantion) warnings from reference code
+     SET_SOURCE_FILES_PROPERTIES(${REF10_SOURCES} PROPERTY COMPILE_FLAGS "-DMYSQL_CLIENT=1 /wd4244 /wd4146")
+  ENDIF()
+
+  IF(CMAKE_C_COMPILER_ID MATCHES "GNU" AND CMAKE_C_COMPILER_VERSION LESS 11
+     AND CMAKE_C_COMPILER_VERSION GREATER 6)
+    SET_SOURCE_FILES_PROPERTIES(${REF10_SOURCES} PROPERTY COMPILE_FLAGS
+                                -fno-sanitize=shift)
+  ENDIF()
+
+  # SHA256 caching plugin for MySQL 8.0 connection
+  REGISTER_PLUGIN(TARGET caching_sha2_password
+                TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                CONFIGURATIONS DYNAMIC STATIC OFF
+                DEFAULT DYNAMIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/auth/caching_sha2_pw.c 
+                        ${CRYPT_SOURCE}
+                LIBRARIES ${CRYPT_LIBS})
+
+  IF(WITH_SSL STREQUAL "GNUTLS" AND NOT WIN32)
+    MESSAGE1(STATUS "sha256_password not supported by GnuTLS due to missing OAEP padding")
+  ELSE()
+    REGISTER_PLUGIN(TARGET sha256_password
+                    TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                    CONFIGURATIONS DYNAMIC STATIC OFF
+                    DEFAULT DYNAMIC
+                    SOURCES ${AUTH_DIR}/sha256_pw.c
+                    LIBRARIES ${CRYPT_LIBS})
+  ENDIF()
+ENDIF()
+
+#GSSAPI client authentication plugin
+IF(NOT WIN32)
+  INCLUDE(${CC_SOURCE_DIR}/cmake/FindGSSAPI.cmake)
+  IF(GSSAPI_FOUND)
+    SET(GSSAPI_SOURCES ${AUTH_DIR}/auth_gssapi_client.c ${AUTH_DIR}/gssapi_client.c ${AUTH_DIR}/gssapi_errmsg.c)
+  ENDIF()
+ELSE()
+  SET(GSSAPI_LIBS secur32)
+  SET(GSSAPI_SOURCES ${AUTH_DIR}/auth_gssapi_client.c ${AUTH_DIR}/sspi_client.c ${AUTH_DIR}/sspi_errmsg.c)
+ENDIF()
+IF(GSSAPI_SOURCES)
+  REGISTER_PLUGIN(TARGET auth_gssapi_client
+                  TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                  CONFIGURATIONS DYNAMIC STATIC OFF
+                  DEFAULT DYNAMIC
+                  SOURCES ${GSSAPI_SOURCES}
+                  INCLUDES ${CC_SOURCE_DIR}/plugins/auth ${GSSAPI_INCS}
+                  LIBRARIES ${GSSAPI_LIBS})
+  IF(CMAKE_C_COMPILER_ID MATCHES "Clang")
+    SET_SOURCE_FILES_PROPERTIES(${GSSAPI_SOURCES} PROPERTY COMPILE_FLAGS "-Wno-deprecated-declarations")
+  ENDIF()
+ENDIF()
+
+# old_password plugin
+REGISTER_PLUGIN(TARGET mysql_old_password
+                TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                CONFIGURATIONS STATIC DYNAMIC OFF
+                DEFAULT STATIC
+                SOURCES ${AUTH_DIR}/old_password.c)
+
+# Cleartext
+REGISTER_PLUGIN(TARGET mysql_clear_password
+                TYPE MARIADB_CLIENT_PLUGIN_AUTH
+                CONFIGURATIONS DYNAMIC STATIC OFF
+                DEFAULT DYNAMIC
+                SOURCES ${AUTH_DIR}/mariadb_cleartext.c)
+
diff --git a/libmariadb/plugins/auth/auth_gssapi_client.c b/libmariadb/plugins/auth/auth_gssapi_client.c
new file mode 100644
index 00000000..6f6c6ceb
--- /dev/null
+++ b/libmariadb/plugins/auth/auth_gssapi_client.c
@@ -0,0 +1,121 @@
+/* Copyright (c) 2015-2016, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+/**
+  @file
+
+  GSSAPI authentication plugin, client side
+*/
+#include <string.h>
+#include <stdarg.h>
+#include <ma_global.h>
+#include <mysql.h>
+#include <ma_server_error.h>
+#include <mysql/client_plugin.h>
+#include <mysql.h>
+#include <stdio.h>
+#include "common.h"
+
+extern int auth_client(char *principal_name,
+                       char *mech,
+                       MYSQL *mysql,
+                       MYSQL_PLUGIN_VIO *vio);
+
+static void parse_server_packet(char *packet, size_t packet_len, char *spn, char *mech)
+{
+  size_t spn_len;
+  spn_len = strnlen(packet, packet_len);
+  strncpy(spn, packet, PRINCIPAL_NAME_MAX);
+  if (spn_len == packet_len - 1)
+  {
+    /* Mechanism not included into packet */
+    *mech = 0;
+  }
+  else
+  {
+    strncpy(mech, packet + spn_len + 1, MECH_NAME_MAX);
+  }
+}
+
+/**
+  Set client error message.
+ */
+void log_client_error(MYSQL *mysql,  const char *format, ...)
+{
+  NET *net= &mysql->net;
+  va_list args;
+
+  net->last_errno= ER_UNKNOWN_ERROR;
+  va_start(args, format);
+  vsnprintf(net->last_error, sizeof(net->last_error) - 1,
+          format, args);
+  va_end(args);
+  memcpy(net->sqlstate, "HY000", sizeof(net->sqlstate));
+}
+
+/**
+  The main client function of the GSSAPI plugin.
+ */
+static int gssapi_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  int packet_len;
+  unsigned char *packet;
+  char spn[PRINCIPAL_NAME_MAX + 1];
+  char mech[MECH_NAME_MAX + 1];
+
+  /* read from server for service principal name */
+  packet_len= vio->read_packet(vio, &packet);
+  if (packet_len < 0)
+  {
+    return CR_ERROR;
+  }
+  parse_server_packet((char *)packet, (size_t)packet_len, spn, mech);
+  return auth_client(spn, mech, mysql, vio);
+}
+
+
+/* register client plugin */
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION auth_gssapi_client_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "auth_gssapi_client",
+  "Shuang Qiu, Robbie Harwood, Vladislav Vaintroub, Georg Richter",
+  "GSSAPI/SSPI based authentication",
+  {0, 1, 0},
+  "BSD",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  gssapi_auth_client
+};
diff --git a/libmariadb/plugins/auth/caching_sha2_pw.c b/libmariadb/plugins/auth/caching_sha2_pw.c
new file mode 100644
index 00000000..4bd45e84
--- /dev/null
+++ b/libmariadb/plugins/auth/caching_sha2_pw.c
@@ -0,0 +1,464 @@
+/************************************************************************************
+  Copyright (C) 2017 MariaDB Corporation AB
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public
+  License along with this library; if not see <http://www.gnu.org/licenses>
+  or write to the Free Software Foundation, Inc.,
+  51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+ *************************************************************************************/
+#ifndef _WIN32
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef _WIN32
+#define HAVE_WINCRYPT
+#undef HAVE_OPENSSL
+#undef HAVE_GNUTLS
+#endif
+
+#if defined(HAVE_OPENSSL) || defined(HAVE_WINCRYPT) || defined(HAVE_GNUTLS)
+
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+#include <errmsg.h>
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <ma_common.h>
+
+#ifndef WIN32
+#include <dlfcn.h>
+#endif
+
+#if defined(HAVE_OPENSSL)
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+#elif defined(HAVE_GNUTLS)
+#include <gnutls/gnutls.h>
+#elif defined(HAVE_WINCRYPT)
+#include <windows.h>
+#include <wincrypt.h>
+#include <bcrypt.h>
+
+extern BCRYPT_ALG_HANDLE RsaProv;
+extern BCRYPT_ALG_HANDLE Sha256Prov;
+#endif
+
+#include <ma_crypt.h>
+
+#define MAX_PW_LEN 1024
+
+#define REQUEST_PUBLIC_KEY     2
+#define CACHED_LOGIN_SUCCEEDED 3
+#define RSA_LOGIN_REQUIRED 4
+
+/* MySQL server allows requesting public key only for non secure connections.
+   secure connections are:
+     - TLS/SSL connections
+     - unix_socket connections
+*/
+static unsigned char is_connection_secure(MYSQL *mysql)
+{
+  if (mysql->options.use_ssl ||
+      mysql->net.pvio->type != PVIO_TYPE_SOCKET)
+    return 1;
+  return 0;
+}
+
+static int ma_sha256_scramble(unsigned char *scramble, size_t scramble_len,
+                              unsigned char *source, size_t source_len,
+                              unsigned char *salt, size_t salt_len)
+{
+  unsigned char digest1[MA_SHA256_HASH_SIZE],
+                digest2[MA_SHA256_HASH_SIZE],
+                new_scramble[MA_SHA256_HASH_SIZE];
+#ifdef HAVE_WINCRYPT
+  MA_HASH_CTX myctx;
+  MA_HASH_CTX *ctx= &myctx;
+#else
+  MA_HASH_CTX *ctx = NULL;
+#endif
+  size_t i;
+
+  /* check if all specified lengtht are valid */
+  if (!scramble_len || !source_len || !salt_len)
+    return 1;
+
+
+  /* Step1: create sha256 from source */
+  if (!(ctx= ma_hash_new(MA_HASH_SHA256, ctx)))
+    return 1;
+  ma_hash_input(ctx, source, source_len);
+  ma_hash_result(ctx, digest1);
+  ma_hash_free(ctx);
+#ifndef HAVE_WINCRYPT
+  ctx = NULL;
+#endif
+
+  /* Step2: create sha256 digest from digest1 */
+  if (!(ctx= ma_hash_new(MA_HASH_SHA256, ctx)))
+    return 1;
+  ma_hash_input(ctx, digest1, MA_SHA256_HASH_SIZE);
+  ma_hash_result(ctx, digest2);
+  ma_hash_free(ctx);
+#ifndef HAVE_WINCRYPT
+  ctx = NULL;
+#endif
+
+  /* Step3: create sha256 digest from digest2 + salt */
+  if (!(ctx= ma_hash_new(MA_HASH_SHA256, ctx)))
+    return 1;
+  ma_hash_input(ctx, digest2, MA_SHA256_HASH_SIZE);
+  ma_hash_input(ctx, salt, salt_len);
+  ma_hash_result(ctx, new_scramble);
+  ma_hash_free(ctx);
+
+  /* Step4: xor(digest1, scramble1) */
+  for (i= 0; i < scramble_len; i++)
+    scramble[i]= digest1[i] ^ new_scramble[i];
+  return 0;
+}
+
+/* function prototypes */
+static int auth_caching_sha2_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql);
+static int auth_caching_sha2_deinit(void);
+static int auth_caching_sha2_init(char *unused1,
+    size_t unused2,
+    int unused3,
+    va_list);
+
+
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION caching_sha2_password_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "caching_sha2_password",
+  "Georg Richter",
+  "Caching SHA2 Authentication Plugin",
+  {0,1,0},
+  "LGPL",
+  NULL,
+  auth_caching_sha2_init,
+  auth_caching_sha2_deinit,
+  NULL,
+  auth_caching_sha2_client
+};
+
+#ifdef HAVE_WINCRYPT
+static LPBYTE ma_load_pem(const char *buffer, DWORD *buffer_len)
+{
+  LPBYTE der_buffer= NULL;
+  DWORD der_buffer_length= 0;
+
+  if (buffer_len == NULL || *buffer_len == 0)
+    return NULL;
+  /* calculate the length of DER binary */
+  if (!CryptStringToBinaryA(buffer, *buffer_len, CRYPT_STRING_BASE64HEADER,
+        NULL, &der_buffer_length, NULL, NULL))
+    goto end;
+  /* allocate DER binary buffer */
+  if (!(der_buffer= (LPBYTE)malloc(der_buffer_length)))
+    goto end;
+  /* convert to DER binary */
+  if (!CryptStringToBinaryA(buffer, *buffer_len, CRYPT_STRING_BASE64HEADER,
+        der_buffer, &der_buffer_length, NULL, NULL))
+    goto end;
+
+  *buffer_len= der_buffer_length;
+
+  return der_buffer;
+
+end:
+  if (der_buffer)
+    free(der_buffer);
+  *buffer_len= 0;
+  return NULL;
+}
+#endif
+
+#ifndef HAVE_GNUTLS
+static char *load_pub_key_file(const char *filename, int *pub_key_size)
+{
+  FILE *fp= NULL;
+  char *buffer= NULL;
+  unsigned char error= 1;
+
+  if (!pub_key_size)
+    return NULL;
+
+  if (!(fp= fopen(filename, "r")))
+    goto end;
+
+  if (fseek(fp, 0, SEEK_END))
+    goto end;
+
+  if ((*pub_key_size= ftell(fp)) < 0)
+    goto end;
+
+  rewind(fp);
+
+  if (!(buffer= malloc(*pub_key_size + 1)))
+    goto end;
+
+  if (fread(buffer, *pub_key_size, 1, fp) != (size_t)*pub_key_size)
+    goto end;
+
+  error= 0;
+
+end:
+  if (fp)
+    fclose(fp);
+  if (error && buffer)
+  {
+    free(buffer);
+    buffer= NULL;
+  }
+  return buffer;
+}
+#endif
+
+static int auth_caching_sha2_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  unsigned char *packet;
+  int packet_length;
+  int rc= CR_ERROR;
+#if !defined(HAVE_GNUTLS)
+  char passwd[MAX_PW_LEN];
+  unsigned char rsa_enc_pw[MAX_PW_LEN];
+#ifdef HAVE_OPENSSL
+  int rsa_size;
+#else
+  ULONG rsa_size;
+#endif
+  unsigned int pwlen, i;
+  char *filebuffer= NULL;
+#endif
+  unsigned char buf[MA_SHA256_HASH_SIZE];
+
+#if defined(HAVE_OPENSSL)
+  RSA *pubkey= NULL;
+  BIO *bio;
+#elif defined(HAVE_WINCRYPT)
+  BCRYPT_KEY_HANDLE pubkey= 0;
+  BCRYPT_OAEP_PADDING_INFO paddingInfo;
+  LPBYTE der_buffer= NULL;
+  DWORD der_buffer_len= 0;
+  CERT_PUBLIC_KEY_INFO *publicKeyInfo= NULL;
+  DWORD publicKeyInfoLen;
+#endif
+
+  /* read error */
+  if ((packet_length= vio->read_packet(vio, &packet)) < 0)
+    return CR_ERROR;
+
+  if (packet_length != SCRAMBLE_LENGTH + 1)
+    return CR_SERVER_HANDSHAKE_ERR;
+
+  memmove(mysql->scramble_buff, packet, SCRAMBLE_LENGTH);
+  mysql->scramble_buff[SCRAMBLE_LENGTH]= 0;
+
+  /* send empty packet if no password was provided */
+  if (!mysql->passwd || !mysql->passwd[0])
+  {
+    if (vio->write_packet(vio, 0, 0))
+      return CR_ERROR;
+    return CR_OK;
+  }
+
+  /* This is the normal authentication, if the host/user key is already in server
+     cache. In case authentication will fail, we will not return an error but will
+     try to connect via RSA encryption.
+  */
+  if (ma_sha256_scramble(buf, MA_SHA256_HASH_SIZE,
+                         (unsigned char *)mysql->passwd, strlen(mysql->passwd),
+                         (unsigned char *)mysql->scramble_buff, SCRAMBLE_LENGTH))
+    return CR_ERROR;
+
+  if (vio->write_packet(vio, buf, MA_SHA256_HASH_SIZE))
+    return CR_ERROR;
+  if ((packet_length=vio->read_packet(vio, &packet)) == -1)
+    return CR_ERROR;
+  if (packet_length == 1)
+  {
+    switch (*packet) {
+    case CACHED_LOGIN_SUCCEEDED:
+      return CR_OK;
+    case RSA_LOGIN_REQUIRED:
+      break;
+    default:
+      return CR_ERROR;
+    }
+  }
+
+  if (!is_connection_secure(mysql))
+  {
+#if defined(HAVE_GNUTLS)
+     mysql->methods->set_error(mysql, CR_AUTH_PLUGIN_ERR, "HY000", 
+                               "RSA Encryption not supported - caching_sha2_password plugin was built with GnuTLS support");
+     return CR_ERROR;
+#else
+    /* read public key file (if specified) */
+    if (mysql->options.extension &&
+        mysql->options.extension->server_public_key)
+    {
+      filebuffer= load_pub_key_file(mysql->options.extension->server_public_key,
+                                    &packet_length);
+    }
+
+    /* if no public key file was specified or if we couldn't read the file,
+       we ask server to send public key */
+    if (!filebuffer)
+    {
+      unsigned char request= REQUEST_PUBLIC_KEY;
+      if (vio->write_packet(vio, &request, 1) ||
+         (packet_length=vio->read_packet(vio, &packet)) == -1)
+      {
+        mysql->methods->set_error(mysql, CR_AUTH_PLUGIN_ERR, "HY000", "Couldn't read RSA public key from server");
+        return CR_ERROR;
+      }
+    }
+#if defined(HAVE_OPENSSL)
+    bio= BIO_new_mem_buf(filebuffer ? (unsigned char *)filebuffer : packet,
+                         packet_length);
+    if ((pubkey= PEM_read_bio_RSA_PUBKEY(bio, NULL, NULL, NULL)))
+      rsa_size= RSA_size(pubkey);
+    BIO_free(bio);
+    ERR_clear_error();
+#elif defined(HAVE_WINCRYPT)
+    der_buffer_len= packet_length;
+    /* Load pem and convert it to binary object. New length will be returned
+       in der_buffer_len */
+    if (!(der_buffer= ma_load_pem(filebuffer ? filebuffer : (char *)packet, &der_buffer_len)))
+      goto error;
+
+    /* Create context and load public key */
+    if (!CryptDecodeObjectEx(X509_ASN_ENCODING, X509_PUBLIC_KEY_INFO,
+                             der_buffer, der_buffer_len,
+                             CRYPT_DECODE_ALLOC_FLAG, NULL,
+                             &publicKeyInfo, &publicKeyInfoLen))
+      goto error;
+    free(der_buffer);
+
+    /* Import public key as cng key */
+    if (!CryptImportPublicKeyInfoEx2(X509_ASN_ENCODING, publicKeyInfo,
+                                     CRYPT_OID_INFO_PUBKEY_ENCRYPT_KEY_FLAG,
+                                     NULL, &pubkey))
+      goto error;
+
+#endif
+    if (!pubkey)
+      return CR_ERROR;
+
+    pwlen= (unsigned int)strlen(mysql->passwd) + 1;  /* include terminating zero */
+    if (pwlen > MAX_PW_LEN)
+      goto error;
+    memcpy(passwd, mysql->passwd, pwlen);
+
+    /* xor password with scramble */
+    for (i=0; i < pwlen; i++)
+      passwd[i]^= *(mysql->scramble_buff + i % SCRAMBLE_LENGTH);
+
+    /* encrypt scrambled password */
+#if defined(HAVE_OPENSSL)
+    if (RSA_public_encrypt(pwlen, (unsigned char *)passwd, rsa_enc_pw, pubkey, RSA_PKCS1_OAEP_PADDING) < 0)
+      goto error;
+#elif defined(HAVE_WINCRYPT)
+    ZeroMemory(&paddingInfo, sizeof(paddingInfo));
+    paddingInfo.pszAlgId = BCRYPT_SHA1_ALGORITHM;
+    if ((rc= BCryptEncrypt(pubkey, (PUCHAR)passwd, pwlen, &paddingInfo, NULL, 0, rsa_enc_pw,
+                     MAX_PW_LEN, &rsa_size, BCRYPT_PAD_OAEP)))
+      goto error;
+
+#endif
+    if (vio->write_packet(vio, rsa_enc_pw, rsa_size))
+      goto error;
+
+    rc= CR_OK;
+#endif
+  }
+  else
+  {
+    if (vio->write_packet(vio, (unsigned char *)mysql->passwd, (int)strlen(mysql->passwd) + 1))
+      return CR_ERROR;
+    return CR_OK;
+  }
+#if !defined(HAVE_GNUTLS)
+error:
+#if defined(HAVE_OPENSSL)
+  if (pubkey)
+    RSA_free(pubkey);
+#elif defined(HAVE_WINCRYPT)
+  if (pubkey)
+    BCryptDestroyKey(pubkey);
+  if (publicKeyInfo)
+    LocalFree(publicKeyInfo);
+#endif
+  free(filebuffer);
+#endif
+  return rc;
+}
+/* }}} */
+
+/* {{{ static int auth_caching_sha2_init */
+/*
+   Initialization routine
+
+   SYNOPSIS
+   auth_sha256_init
+   unused1
+   unused2
+   unused3
+   unused4
+
+   DESCRIPTION
+   Init function checks if the caller provides own dialog function.
+   The function name must be mariadb_auth_dialog or
+   mysql_authentication_dialog_ask. If the function cannot be found,
+   we will use owr own simple command line input.
+
+   RETURN
+   0           success
+ */
+static int auth_caching_sha2_init(char *unused1 __attribute__((unused)),
+    size_t unused2  __attribute__((unused)),
+    int unused3     __attribute__((unused)),
+    va_list unused4 __attribute__((unused)))
+{
+#if defined(HAVE_WINCRYPT)
+  BCryptOpenAlgorithmProvider(&Sha256Prov, BCRYPT_SHA256_ALGORITHM, NULL, 0);
+  BCryptOpenAlgorithmProvider(&RsaProv, BCRYPT_RSA_ALGORITHM, NULL, 0);
+#endif
+  return 0;
+}
+/* }}} */
+
+/* {{{ auth_caching_sha2_deinit */
+static int auth_caching_sha2_deinit(void)
+{
+#if defined(HAVE_WINCRYPT)
+  BCryptCloseAlgorithmProvider(Sha256Prov, 0);
+  BCryptCloseAlgorithmProvider(RsaProv, 0);
+#endif
+  return 0;
+}
+/* }}} */
+
+#endif  /* defined(HAVE_OPENSSL) || defined(HAVE_WINCRYPT) || defined(HAVE_GNUTLS)*/
+
diff --git a/libmariadb/plugins/auth/common.h b/libmariadb/plugins/auth/common.h
new file mode 100644
index 00000000..c04241ac
--- /dev/null
+++ b/libmariadb/plugins/auth/common.h
@@ -0,0 +1,4 @@
+/** Maximal length of the target name */
+#define PRINCIPAL_NAME_MAX 256
+/** Maximal length of the mech string */
+#define MECH_NAME_MAX 30
diff --git a/libmariadb/plugins/auth/dialog.c b/libmariadb/plugins/auth/dialog.c
new file mode 100644
index 00000000..31d7b7d8
--- /dev/null
+++ b/libmariadb/plugins/auth/dialog.c
@@ -0,0 +1,222 @@
+/************************************************************************************
+   Copyright (C) 2014-2018 MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+*************************************************************************************/
+#ifndef _WIN32
+#define _GNU_SOURCE 1
+#endif
+
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+
+#ifndef WIN32
+#include <dlfcn.h>
+#endif
+
+
+/* function prototypes */
+extern char *get_tty_password(char *opt_message, char *buff, int bufflen);
+static int auth_dialog_open(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql);
+static int auth_dialog_init(char *unused1,
+                            size_t unused2,
+                            int unused3,
+                            va_list);
+
+mysql_authentication_dialog_ask_t auth_dialog_func;
+
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION dialog_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "dialog",
+  "Sergei Golubchik, Georg Richter",
+  "Dialog Client Authentication Plugin",
+  {0,1,0},
+  "LGPL",
+  NULL,
+  auth_dialog_init,
+  NULL,
+  NULL,
+  auth_dialog_open
+};
+
+
+/* {{{ static char *auth_dialog_native_prompt */
+/*
+   Native dialog prompt via stdin
+
+   SYNOPSIS
+     auth_dialog_native_prompt
+     mysql            connection handle
+     type             input type
+     prompt           prompt
+     buffer           Input buffer
+     buffer_len       Input buffer length
+
+  DESCRIPTION
+    
+  RETURNS
+    Input buffer
+*/
+static char *auth_dialog_native_prompt(MYSQL *mysql __attribute__((unused)),
+                                       int type,
+                                       const char *prompt,
+                                       char *buffer,
+                                       int buffer_len)
+{
+  /* display prompt */
+  fprintf(stdout, "%s", prompt);
+
+  memset(buffer, 0, buffer_len);
+
+  /* for type 2 (password) don't display input */
+  if (type != 2)
+  {
+    if (fgets(buffer, buffer_len - 1, stdin))
+    {
+      /* remove trailing line break */
+      size_t length= strlen(buffer);
+      if (length && buffer[length - 1] == '\n')
+        buffer[length - 1]= 0;
+    }
+  }
+  else
+  {
+    get_tty_password((char *)"", buffer, buffer_len - 1);
+  }
+  return buffer;
+}
+/* }}} */
+
+/* {{{ static int auth_dialog_open */
+/*
+   opens dialog
+
+   SYNOPSIS
+     vio           Vio
+     mysql         connection handle
+
+   DESCRIPTION
+     reads prompt from server, waits for input and sends
+     input to server.
+     Note that first byte of prompt indicates if we have a 
+     password which should not be echoed to stdout.
+
+   RETURN
+     CR_ERROR      if an error occurs
+     CR_OK
+     CR_OK_HANDSHAKE_COMPLETE
+*/
+static int auth_dialog_open(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  uchar *packet;
+  uchar type= 0;
+  char dialog_buffer[1024];
+  char *response;
+  int packet_length;
+  my_bool first_loop= TRUE;
+
+  do {
+    if ((packet_length= vio->read_packet(vio, &packet)) == -1)
+      /* read error */
+      return CR_ERROR;
+
+    if (packet_length > 0)
+    {
+      type= *packet;
+      packet++;
+
+      /* check for protocol packet */
+      if (!type || type == 254)
+        return CR_OK_HANDSHAKE_COMPLETE;
+
+      if ((type >> 1) == 2 &&
+          first_loop &&
+          mysql->passwd && mysql->passwd[0])
+        response= mysql->passwd;
+      else
+        response= auth_dialog_func(mysql, type >> 1,
+                                  (const char *)packet,
+                                  dialog_buffer, 1024);
+    }
+    else
+    {
+      /* in case mysql_change_user was called the client needs
+         to send packet first */
+      response= mysql->passwd;
+    }
+    if (!response ||
+        vio->write_packet(vio, (uchar *)response, (int)strlen(response) + 1))
+      return CR_ERROR;
+
+    first_loop= FALSE;
+
+  } while((type & 1) != 1);
+  return CR_OK;
+}
+/* }}} */
+
+/* {{{ static int auth_dialog_init */
+/* 
+  Initialization routine
+
+  SYNOPSIS
+    auth_dialog_init
+      unused1
+      unused2
+      unused3
+      unused4
+
+  DESCRIPTION
+    Init function checks if the caller provides own dialog function.
+    The function name must be mariadb_auth_dialog or
+    mysql_authentication_dialog_ask. If the function cannot be found,
+    we will use owr own simple command line input.
+
+  RETURN
+    0           success
+*/
+static int auth_dialog_init(char *unused1 __attribute__((unused)), 
+                            size_t unused2  __attribute__((unused)), 
+                            int unused3     __attribute__((unused)), 
+                            va_list unused4 __attribute__((unused)))
+{
+  void *func;
+#ifdef WIN32
+  if (!(func= GetProcAddress(GetModuleHandle(NULL), "mariadb_auth_dialog")))
+    /* for MySQL users */
+    func= GetProcAddress(GetModuleHandle(NULL), "mysql_authentication_dialog_ask");
+#else
+  if (!(func= dlsym(RTLD_DEFAULT, "mariadb_auth_dialog")))
+    /* for MySQL users */
+    func= dlsym(RTLD_DEFAULT, "mysql_authentication_dialog_ask");
+#endif
+  if (func)
+    auth_dialog_func= (mysql_authentication_dialog_ask_t)func;
+  else
+    auth_dialog_func= auth_dialog_native_prompt;
+
+  return 0;
+}
+/* }}} */
diff --git a/libmariadb/plugins/auth/ed25519.c b/libmariadb/plugins/auth/ed25519.c
new file mode 100644
index 00000000..918b8bad
--- /dev/null
+++ b/libmariadb/plugins/auth/ed25519.c
@@ -0,0 +1,145 @@
+/************************************************************************************
+  Copyright (C) 2017-2019 MariaDB Corporation AB
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public
+  License along with this library; if not see <http://www.gnu.org/licenses>
+  or write to the Free Software Foundation, Inc.,
+  51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+ *************************************************************************************/
+#ifndef _WIN32
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef _WIN32
+#define HAVE_WINCRYPT
+#undef HAVE_OPENSSL
+#undef HAVE_GNUTLS
+#endif
+
+#if defined(HAVE_OPENSSL) || defined(HAVE_WINCRYPT) || defined(HAVE_GNUTLS)
+
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+#include <errmsg.h>
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <ma_common.h>
+
+#ifndef WIN32
+#include <dlfcn.h>
+#endif
+
+#if defined(HAVE_WINCRYPT)
+#include <windows.h>
+#include <wincrypt.h>
+#include <bcrypt.h>
+extern BCRYPT_ALG_HANDLE Sha512Prov;
+#elif defined(HAVE_OPENSSL)
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+#elif defined(HAVE_GNUTLS)
+#include <gnutls/gnutls.h>
+#endif
+
+#include <ref10/api.h>
+#include <ref10/common.h>
+#include <ma_crypt.h>
+
+/* function prototypes */
+static int auth_ed25519_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql);
+static int auth_ed25519_deinit(void);
+static int auth_ed25519_init(char *unused1,
+    size_t unused2,
+    int unused3,
+    va_list);
+
+
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION client_ed25519_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "client_ed25519",
+  "Sergei Golubchik, Georg Richter",
+  "Ed25519 Authentication Plugin",
+  {0,1,0},
+  "LGPL",
+  NULL,
+  auth_ed25519_init,
+  auth_ed25519_deinit,
+  NULL,
+  auth_ed25519_client
+};
+
+
+static int auth_ed25519_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  unsigned char *packet,
+                signature[CRYPTO_BYTES + NONCE_BYTES];
+  int pkt_len;
+
+  /*
+     Step 1: Server sends nonce
+     Step 2: check that packet length is equal to NONCE_BYTES (=32)
+     Step 3: Sign the nonce with password
+     Steo 4: Send the signature back to server
+  */
+
+  /* read and check nonce */
+  pkt_len= vio->read_packet(vio, &packet);
+  if (pkt_len != NONCE_BYTES)
+    return CR_SERVER_HANDSHAKE_ERR;
+
+  /* Sign nonce: the crypto_sign function is part of ref10 */
+  ma_crypto_sign(signature, packet, NONCE_BYTES, (unsigned char*)mysql->passwd, strlen(mysql->passwd));
+
+  /* send signature to server */
+  if (vio->write_packet(vio, signature, CRYPTO_BYTES))
+    return CR_ERROR;
+
+  return CR_OK;
+}
+/* }}} */
+
+/* {{{ static int auth_ed25519_init */
+static int auth_ed25519_init(char *unused1 __attribute__((unused)),
+    size_t unused2  __attribute__((unused)),
+    int unused3     __attribute__((unused)),
+    va_list unused4 __attribute__((unused)))
+{
+#if defined(HAVE_WINCRYPT)
+  BCryptOpenAlgorithmProvider(&Sha512Prov, BCRYPT_SHA512_ALGORITHM, NULL, 0);
+#endif
+  return 0;
+}
+/* }}} */
+
+/* {{{ auth_ed25519_deinit */
+static int auth_ed25519_deinit(void)
+{
+#if defined(HAVE_WINCRYPT)
+  BCryptCloseAlgorithmProvider(Sha512Prov, 0);
+#endif
+  return 0;
+}
+/* }}} */
+
+#endif  /* defined(HAVE_OPENSSL) || defined(HAVE_WINCRYPT) || defined(HAVE_GNUTLS)*/
+
diff --git a/libmariadb/plugins/auth/gssapi_client.c b/libmariadb/plugins/auth/gssapi_client.c
new file mode 100644
index 00000000..b4e3e89d
--- /dev/null
+++ b/libmariadb/plugins/auth/gssapi_client.c
@@ -0,0 +1,131 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+#if defined(__FreeBSD__) ||  defined(SOLARIS) || defined(__sun)
+#include <gssapi/gssapi.h>
+#else
+#include <gssapi.h>
+#endif
+#include <string.h>
+#include <stdio.h>
+#include <mysql/plugin_auth.h>
+#include <ma_server_error.h>
+#include <mysql.h>
+#include "gssapi_errmsg.h"
+
+extern void log_client_error(MYSQL *mysql,const char *fmt,...);
+
+
+/* This sends the error to the client */
+static void log_error(MYSQL *mysql, OM_uint32 major, OM_uint32 minor, const char *msg)
+{
+  if (GSS_ERROR(major))
+  {
+    char sysmsg[1024];
+    gssapi_errmsg(major, minor, sysmsg, sizeof(sysmsg));
+    log_client_error(mysql,
+      "Client GSSAPI error (major %u, minor %u) : %s - %s",
+       major, minor, msg, sysmsg);
+  }
+  else
+  {
+    log_client_error(mysql, "Client GSSAPI error : %s", msg);
+  }
+}
+
+int auth_client(char *principal_name, char *mech __attribute__((unused)),
+                MYSQL *mysql, MYSQL_PLUGIN_VIO *vio)
+{
+  gss_buffer_desc input= {0,0};
+  int ret= CR_ERROR;
+  OM_uint32 major= 0, minor= 0;
+  gss_ctx_id_t ctxt= GSS_C_NO_CONTEXT;
+  gss_name_t service_name= GSS_C_NO_NAME;
+
+  if (principal_name && principal_name[0])
+  {
+    /* import principal from plain text */
+    gss_buffer_desc principal_name_buf;
+    principal_name_buf.length= strlen(principal_name);
+    principal_name_buf.value= (void *) principal_name;
+    major= gss_import_name(&minor, &principal_name_buf, GSS_C_NT_USER_NAME, &service_name);
+    if (GSS_ERROR(major))
+    {
+      log_error(mysql, major, minor, "gss_import_name");
+      return CR_ERROR;
+    }
+  }
+
+  do
+  {
+    gss_buffer_desc output= {0,0};
+    major= gss_init_sec_context(&minor, GSS_C_NO_CREDENTIAL, &ctxt, service_name,
+                                GSS_C_NO_OID, 0, 0, GSS_C_NO_CHANNEL_BINDINGS,
+                                &input, NULL, &output, NULL, NULL);
+    if (output.length)
+    {
+      /* send credential */
+      if(vio->write_packet(vio, (unsigned char *)output.value, output.length))
+      {
+        /* Server error packet contains detailed message. */
+        ret= CR_OK_HANDSHAKE_COMPLETE;
+        gss_release_buffer (&minor, &output);
+        goto cleanup;
+      }
+    }
+    gss_release_buffer (&minor, &output);
+
+    if (GSS_ERROR(major))
+    {
+       log_error(mysql, major, minor,"gss_init_sec_context");
+       goto cleanup;
+    }
+
+    if (major & GSS_S_CONTINUE_NEEDED)
+    {
+      int len= vio->read_packet(vio, (unsigned char **) &input.value);
+      if (len <= 0)
+      {
+        /* Server error packet contains detailed message. */
+        ret= CR_OK_HANDSHAKE_COMPLETE;
+        goto cleanup;
+      }
+      input.length= len;
+    }
+  } while (major & GSS_S_CONTINUE_NEEDED);
+
+  ret= CR_OK;
+
+cleanup:
+  if (service_name != GSS_C_NO_NAME)
+    gss_release_name(&minor, &service_name);
+  if (ctxt != GSS_C_NO_CONTEXT)
+    gss_delete_sec_context(&minor, &ctxt, GSS_C_NO_BUFFER);
+
+  return ret;
+}
diff --git a/libmariadb/plugins/auth/gssapi_errmsg.c b/libmariadb/plugins/auth/gssapi_errmsg.c
new file mode 100644
index 00000000..eb914404
--- /dev/null
+++ b/libmariadb/plugins/auth/gssapi_errmsg.c
@@ -0,0 +1,79 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+#if defined(__FreeBSD__) ||  defined(SOLARIS) || defined(__sun)
+#include <gssapi/gssapi.h>
+#else
+#include <gssapi.h>
+#endif
+#include <string.h>
+void gssapi_errmsg(OM_uint32 major, OM_uint32 minor, char *buf, size_t size)
+{
+  OM_uint32 message_context;
+  OM_uint32 status_code;
+  OM_uint32 maj_status;
+  OM_uint32 min_status;
+  gss_buffer_desc status_string;
+  char *p= buf;
+  char *end= buf + size - 1;
+  int types[] = {GSS_C_GSS_CODE,GSS_C_MECH_CODE};
+  int i;
+  for(i= 0; i < 2;i++)
+  {
+    message_context= 0;
+    status_code= types[i] == GSS_C_GSS_CODE?major:minor;
+
+    if(!status_code)
+      continue;
+    do
+    {
+      maj_status = gss_display_status(
+        &min_status,
+        status_code,
+        types[i],
+        GSS_C_NO_OID,
+        &message_context,
+        &status_string);
+
+      if(maj_status)
+        break;
+
+      if(p + status_string.length + 2 < end)
+      {
+        memcpy(p,status_string.value, status_string.length);
+        p += status_string.length;
+        *p++ = '.';
+        *p++ = ' ';
+      }
+
+      gss_release_buffer(&min_status, &status_string);
+    }
+    while (message_context != 0);
+  }
+  *p= 0;
+}
diff --git a/libmariadb/plugins/auth/gssapi_errmsg.h b/libmariadb/plugins/auth/gssapi_errmsg.h
new file mode 100644
index 00000000..26db8439
--- /dev/null
+++ b/libmariadb/plugins/auth/gssapi_errmsg.h
@@ -0,0 +1,29 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+extern void gssapi_errmsg(OM_uint32 major, OM_uint32 minor, char *buf, size_t size);
diff --git a/libmariadb/plugins/auth/mariadb_cleartext.c b/libmariadb/plugins/auth/mariadb_cleartext.c
new file mode 100644
index 00000000..b63c1d3b
--- /dev/null
+++ b/libmariadb/plugins/auth/mariadb_cleartext.c
@@ -0,0 +1,76 @@
+/************************************************************************************
+   Copyright (C) 2014-2018 MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+*************************************************************************************/
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+
+/* clear text plugin submits the password without opening a dialog.
+   This will be the case if pam-use-cleartext-plugin option is
+   enabled on server side */
+
+/* {{{ auth_send_plain_password() */
+/*
+   sends an unencrypted password to server
+
+   SYNOPSIS
+     auth_send_plain_password()
+     vio             pointer to vio structure
+     mysql           connection handle
+
+   DESCRIPTION
+     sends an unencrypted password (which was specified either in
+     mysql_real_connect or mysql_change_user) to server.
+
+   RETURN
+     CR_OK
+     CR_ERROR        if an error occurred
+*/
+static int clear_password_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  if (!vio || !mysql || !mysql->passwd)
+    return CR_ERROR;
+
+  /* write password including terminating zero character */
+  return vio->write_packet(vio, (const unsigned char *) mysql->passwd, (int)strlen(mysql->passwd) + 1) ?
+         CR_ERROR : CR_OK;
+}
+/* }}} */
+
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION mysql_clear_password_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "mysql_clear_password",
+  "Georg Richter",
+  "MariaDB clear password authentication plugin",
+  {0,1,0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  clear_password_auth_client
+};
+
+
diff --git a/libmariadb/plugins/auth/my_auth.c b/libmariadb/plugins/auth/my_auth.c
new file mode 100644
index 00000000..4e17ef7d
--- /dev/null
+++ b/libmariadb/plugins/auth/my_auth.c
@@ -0,0 +1,682 @@
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <string.h>
+#include <ma_common.h>
+#include <mysql/client_plugin.h>
+
+typedef struct st_mysql_client_plugin_AUTHENTICATION auth_plugin_t;
+static int client_mpvio_write_packet(struct st_plugin_vio*, const uchar*, size_t);
+static int native_password_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql);
+static int dummy_fallback_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql __attribute__((unused)));
+extern void read_user_name(char *name);
+extern char *ma_send_connect_attr(MYSQL *mysql, unsigned char *buffer);
+extern int ma_read_ok_packet(MYSQL *mysql, uchar *pos, ulong length);
+extern unsigned char *mysql_net_store_length(unsigned char *packet, size_t length);
+
+typedef struct {
+  int (*read_packet)(struct st_plugin_vio *vio, uchar **buf);
+  int (*write_packet)(struct st_plugin_vio *vio, const uchar *pkt, size_t pkt_len);
+  void (*info)(struct st_plugin_vio *vio, struct st_plugin_vio_info *info);
+  /* -= end of MYSQL_PLUGIN_VIO =- */
+  MYSQL *mysql;
+  auth_plugin_t *plugin;             /**< what plugin we're under */
+  const char *db;
+  struct {
+    uchar *pkt;                      /**< pointer into NET::buff */
+    uint pkt_len;
+  } cached_server_reply;
+  uint packets_read, packets_written; /**< counters for send/received packets */
+  my_bool mysql_change_user;          /**< if it's mysql_change_user() */
+  int last_read_packet_len;           /**< the length of the last *read* packet */
+} MCPVIO_EXT;
+/*
+#define compile_time_assert(A) \
+do {\
+  typedef char constraint[(A) ? 1 : -1];\
+} while (0);
+*/
+
+auth_plugin_t mysql_native_password_client_plugin=
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  native_password_plugin_name,
+  "R.J.Silk, Sergei Golubchik",
+  "Native MySQL authentication",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  native_password_auth_client
+};
+
+
+static int native_password_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  int pkt_len;
+  uchar *pkt;
+
+  if (((MCPVIO_EXT *)vio)->mysql_change_user)
+  {
+    /*
+      in mysql_change_user() the client sends the first packet.
+      we use the old scramble.
+    */
+    pkt= (uchar*)mysql->scramble_buff;
+    pkt_len= SCRAMBLE_LENGTH + 1;
+  }
+  else
+  {
+    /* read the scramble */
+    if ((pkt_len= vio->read_packet(vio, &pkt)) < 0)
+      return CR_ERROR;
+
+    if (pkt_len != SCRAMBLE_LENGTH + 1)
+      return CR_SERVER_HANDSHAKE_ERR;
+
+    /* save it in MYSQL */
+    memmove(mysql->scramble_buff, pkt, SCRAMBLE_LENGTH);
+    mysql->scramble_buff[SCRAMBLE_LENGTH] = 0;
+  }
+
+  if (mysql && mysql->passwd[0])
+  {
+    char scrambled[SCRAMBLE_LENGTH + 1];
+    ma_scramble_41((uchar *)scrambled, (char*)pkt, mysql->passwd);
+    if (vio->write_packet(vio, (uchar*)scrambled, SCRAMBLE_LENGTH))
+      return CR_ERROR;
+  }
+  else
+    if (vio->write_packet(vio, 0, 0)) /* no password */
+      return CR_ERROR;
+
+  return CR_OK;
+}
+
+auth_plugin_t dummy_fallback_client_plugin=
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "dummy_fallback_auth",
+  "Sergei Golubchik",
+  "Dummy fallback plugin",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  dummy_fallback_auth_client
+};
+
+
+static int dummy_fallback_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql __attribute__((unused)))
+{
+  char last_error[MYSQL_ERRMSG_SIZE];
+  unsigned int i, last_errno= ((MCPVIO_EXT *)vio)->mysql->net.last_errno;
+  if (last_errno)
+  {
+    strncpy(last_error, ((MCPVIO_EXT *)vio)->mysql->net.last_error,
+            sizeof(last_error) - 1);
+    last_error[sizeof(last_error) - 1]= 0;
+  }
+
+  /* safety-wise we only do 10 round-trips */
+  for (i=0; i < 10; i++)
+  {
+    uchar *pkt;
+    if (vio->read_packet(vio, &pkt) < 0)
+      break;
+    if (vio->write_packet(vio, 0, 0))
+      break;
+  }
+  if (last_errno)
+  {
+    MYSQL *mysql= ((MCPVIO_EXT *)vio)->mysql;
+    strncpy(mysql->net.last_error, last_error,
+            sizeof(mysql->net.last_error) - 1);
+    mysql->net.last_error[sizeof(mysql->net.last_error) - 1]= 0;
+  }
+  return CR_ERROR;
+}
+
+static int send_change_user_packet(MCPVIO_EXT *mpvio,
+                                   const uchar *data, int data_len)
+{
+  MYSQL *mysql= mpvio->mysql;
+  char *buff, *end;
+  int res= 1;
+  size_t conn_attr_len= (mysql->options.extension) ? 
+                         mysql->options.extension->connect_attrs_len : 0;
+
+  buff= malloc(USERNAME_LENGTH+1 + data_len+1 + NAME_LEN+1 + 2 + NAME_LEN+1 + 9 + conn_attr_len);
+
+  end= ma_strmake(buff, mysql->user, USERNAME_LENGTH) + 1;
+
+  if (!data_len)
+    *end++= 0;
+  else
+  {
+    if (mysql->client_flag & CLIENT_SECURE_CONNECTION)
+    {
+      DBUG_ASSERT(data_len <= 255);
+      if (data_len > 255)
+      {
+        my_set_error(mysql, CR_MALFORMED_PACKET, SQLSTATE_UNKNOWN, 0);
+        goto error;
+      }
+      *end++= data_len;
+    }
+    else
+    {
+      DBUG_ASSERT(data_len == SCRAMBLE_LENGTH_323 + 1);
+      DBUG_ASSERT(data[SCRAMBLE_LENGTH_323] == 0);
+    }
+    memcpy(end, data, data_len);
+    end+= data_len;
+  }
+  end= ma_strmake(end, mpvio->db ? mpvio->db : "", NAME_LEN) + 1;
+
+  if (mysql->server_capabilities & CLIENT_PROTOCOL_41)
+  {
+    int2store(end, (ushort) mysql->charset->nr);
+    end+= 2;
+  }
+
+  if (mysql->server_capabilities & CLIENT_PLUGIN_AUTH)
+    end= ma_strmake(end, mpvio->plugin->name, NAME_LEN) + 1;
+
+  end= ma_send_connect_attr(mysql, (unsigned char *)end);
+
+  res= ma_simple_command(mysql, COM_CHANGE_USER,
+                      buff, (ulong)(end-buff), 1, NULL);
+
+error:
+  free(buff);
+  return res;
+}
+
+
+
+static int send_client_reply_packet(MCPVIO_EXT *mpvio,
+                                    const uchar *data, int data_len)
+{
+  MYSQL *mysql= mpvio->mysql;
+  NET *net= &mysql->net;
+  char *buff, *end;
+  size_t conn_attr_len= (mysql->options.extension) ? 
+                         mysql->options.extension->connect_attrs_len : 0;
+
+  /* see end= buff+32 below, fixed size of the packet is 32 bytes */
+  buff= malloc(33 + USERNAME_LENGTH + data_len + NAME_LEN + NAME_LEN + conn_attr_len + 9);
+  end= buff;
+
+  mysql->client_flag|= mysql->options.client_flag;
+  mysql->client_flag|= CLIENT_CAPABILITIES;
+
+  if (mysql->client_flag & CLIENT_MULTI_STATEMENTS)
+    mysql->client_flag|= CLIENT_MULTI_RESULTS;
+
+#if defined(HAVE_TLS) && !defined(EMBEDDED_LIBRARY)
+  if (mysql->options.ssl_key || mysql->options.ssl_cert ||
+      mysql->options.ssl_ca || mysql->options.ssl_capath ||
+      mysql->options.ssl_cipher || mysql->options.use_ssl ||
+      (mysql->options.client_flag & CLIENT_SSL_VERIFY_SERVER_CERT))
+    mysql->options.use_ssl= 1;
+  if (mysql->options.use_ssl)
+    mysql->client_flag|= CLIENT_SSL;
+#endif /* HAVE_TLS && !EMBEDDED_LIBRARY*/
+  if (mpvio->db)
+    mysql->client_flag|= CLIENT_CONNECT_WITH_DB;
+  else
+    /* See CONC-490: If no database was specified, we need
+       to unset CLIENT_CONNECT_WITH_DB flag */
+    mysql->client_flag&= ~CLIENT_CONNECT_WITH_DB;
+
+  /* if server doesn't support SSL and verification of server certificate
+     was set to mandatory, we need to return an error */
+  if (mysql->options.use_ssl && !(mysql->server_capabilities & CLIENT_SSL))
+  {
+    if ((mysql->client_flag & CLIENT_SSL_VERIFY_SERVER_CERT) ||
+        (mysql->options.extension && (mysql->options.extension->tls_fp || 
+                                      mysql->options.extension->tls_fp_list)))
+    {
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                          ER(CR_SSL_CONNECTION_ERROR), 
+                          "SSL is required, but the server does not support it");
+      goto error;
+    }
+  }
+
+
+  /* Remove options that server doesn't support */
+  mysql->client_flag= mysql->client_flag &
+                       (~(CLIENT_COMPRESS | CLIENT_SSL | CLIENT_PROTOCOL_41) 
+                       | mysql->server_capabilities);
+
+#ifndef HAVE_COMPRESS
+  mysql->client_flag&= ~CLIENT_COMPRESS;
+#endif
+
+  if (mysql->client_flag & CLIENT_PROTOCOL_41)
+  {
+    /* 4.1 server and 4.1 client has a 32 byte option flag */
+    if (!(mysql->server_capabilities & CLIENT_MYSQL))
+      mysql->client_flag&= ~CLIENT_MYSQL;
+    int4store(buff,mysql->client_flag);
+    int4store(buff+4, net->max_packet_size);
+    buff[8]= (char) mysql->charset->nr;
+    memset(buff + 9, 0, 32-9);
+    if (!(mysql->server_capabilities & CLIENT_MYSQL))
+    {
+      mysql->extension->mariadb_client_flag = MARIADB_CLIENT_SUPPORTED_FLAGS >> 32;
+      int4store(buff + 28, mysql->extension->mariadb_client_flag);
+    }
+    end= buff+32;
+  }
+  else
+  {
+    int2store(buff, mysql->client_flag);
+    int3store(buff+2, net->max_packet_size);
+    end= buff+5;
+  }
+#ifdef HAVE_TLS
+  if (mysql->options.ssl_key ||
+      mysql->options.ssl_cert ||
+      mysql->options.ssl_ca ||
+      mysql->options.ssl_capath ||
+      mysql->options.ssl_cipher
+#ifdef CRL_IMPLEMENTED
+      || (mysql->options.extension &&
+       (mysql->options.extension->ssl_crl ||
+        mysql->options.extension->ssl_crlpath))
+#endif
+      )
+    mysql->options.use_ssl= 1;
+  if (mysql->options.use_ssl &&
+      (mysql->client_flag & CLIENT_SSL))
+  {
+    /*
+      Send mysql->client_flag, max_packet_size - unencrypted otherwise
+      the server does not know we want to do SSL
+    */
+    if (ma_net_write(net, (unsigned char *)buff, (size_t) (end-buff)) || ma_net_flush(net))
+    {
+      my_set_error(mysql, CR_SERVER_LOST, SQLSTATE_UNKNOWN,
+                          ER(CR_SERVER_LOST_EXTENDED),
+                          "sending connection information to server",
+                          errno);
+      goto error;
+    }
+    if (ma_pvio_start_ssl(mysql->net.pvio))
+      goto error;
+  }
+#endif /* HAVE_TLS */
+
+  /* This needs to be changed as it's not useful with big packets */
+  if (mysql->user && mysql->user[0])
+    ma_strmake(end, mysql->user, USERNAME_LENGTH);
+  else
+    read_user_name(end);
+
+  /* We have to handle different version of handshake here */
+  end+= strlen(end) + 1;
+  if (data_len)
+  {
+    if (mysql->server_capabilities & CLIENT_SECURE_CONNECTION)
+    {
+      if (mysql->server_capabilities & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA)
+      {
+        end= (char *)mysql_net_store_length((uchar *)end, data_len);
+      }
+      else {
+        /* Without CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA capability password
+           length is limited up to 255 chars */
+        if (data_len > 0xFF)
+          goto error;
+        *end++= data_len;
+      }
+      memcpy(end, data, data_len);
+      end+= data_len;
+    }
+    else
+    {
+      DBUG_ASSERT(data_len == SCRAMBLE_LENGTH_323 + 1); /* incl. \0 at the end */
+      memcpy(end, data, data_len);
+      end+= data_len;
+    }
+  }
+  else
+    *end++= 0;
+
+  /* Add database if needed */
+  if (mpvio->db && (mysql->server_capabilities & CLIENT_CONNECT_WITH_DB))
+  {
+    end= ma_strmake(end, mpvio->db, NAME_LEN) + 1;
+    mysql->db= strdup(mpvio->db);
+  }
+
+  if (mysql->server_capabilities & CLIENT_PLUGIN_AUTH)
+    end= ma_strmake(end, mpvio->plugin->name, NAME_LEN) + 1;
+
+  end= ma_send_connect_attr(mysql, (unsigned char *)end);
+
+  /* Write authentication package */
+  if (ma_net_write(net, (unsigned char *)buff, (size_t) (end-buff)) || ma_net_flush(net))
+  {
+    my_set_error(mysql, CR_SERVER_LOST, SQLSTATE_UNKNOWN,
+                        ER(CR_SERVER_LOST_EXTENDED),
+                        "sending authentication information",
+                        errno);
+    goto error;
+  }
+  free(buff);
+  return 0;
+
+error:
+  free(buff);
+  return 1;
+}
+
+/**
+  vio->read_packet() callback method for client authentication plugins
+
+  This function is called by a client authentication plugin, when it wants
+  to read data from the server.
+*/
+
+static int client_mpvio_read_packet(struct st_plugin_vio *mpv, uchar **buf)
+{
+  MCPVIO_EXT *mpvio= (MCPVIO_EXT*)mpv;
+  MYSQL *mysql= mpvio->mysql;
+  ulong  pkt_len;
+
+  /* there are cached data left, feed it to a plugin */
+  if (mpvio->cached_server_reply.pkt)
+  {
+    *buf= mpvio->cached_server_reply.pkt;
+    mpvio->cached_server_reply.pkt= 0;
+    mpvio->packets_read++;
+    return mpvio->cached_server_reply.pkt_len;
+  }
+
+  if (mpvio->packets_read == 0)
+  {
+    /*
+      the server handshake packet came from the wrong plugin,
+      or it's mysql_change_user(). Either way, there is no data
+      for a plugin to read. send a dummy packet to the server
+      to initiate a dialog.
+    */
+    if (client_mpvio_write_packet(mpv, 0, 0))
+      return (int)packet_error;
+  }
+
+  /* otherwise read the data */
+  if ((pkt_len= ma_net_safe_read(mysql)) == packet_error)
+    return (int)packet_error;
+
+  mpvio->last_read_packet_len= pkt_len;
+  *buf= mysql->net.read_pos;
+
+  /* was it a request to change plugins ? */
+  if (pkt_len && **buf == 254)
+    return (int)packet_error; /* if yes, this plugin shan't continue */
+
+  /*
+    the server sends \1\255 or \1\254 instead of just \255 or \254 -
+    for us to not confuse it with an error or "change plugin" packets.
+    We remove this escaping \1 here.
+
+    See also server_mpvio_write_packet() where the escaping is done.
+  */
+  if (pkt_len && **buf == 1)
+  {
+    (*buf)++;
+    pkt_len--;
+  }
+  mpvio->packets_read++;
+  return pkt_len;
+}
+
+/**
+  vio->write_packet() callback method for client authentication plugins
+
+  This function is called by a client authentication plugin, when it wants
+  to send data to the server.
+
+  It transparently wraps the data into a change user or authentication
+  handshake packet, if necessary.
+*/
+
+static int client_mpvio_write_packet(struct st_plugin_vio *mpv,
+                                     const uchar *pkt, size_t pkt_len)
+{
+  int res;
+  MCPVIO_EXT *mpvio= (MCPVIO_EXT*)mpv;
+
+  if (mpvio->packets_written == 0)
+  {
+    if (mpvio->mysql_change_user)
+      res= send_change_user_packet(mpvio, pkt, (int)pkt_len);
+    else
+      res= send_client_reply_packet(mpvio, pkt, (int)pkt_len);
+  }
+  else
+  {
+    NET *net= &mpvio->mysql->net;
+    if (mpvio->mysql->thd)
+      res= 1; /* no chit-chat in embedded */
+    else
+      res= ma_net_write(net, (unsigned char *)pkt, pkt_len) || ma_net_flush(net);
+  }
+
+  if (res)
+  {
+    /* don't overwrite errors */
+    if (!mysql_errno(mpvio->mysql))
+      my_set_error(mpvio->mysql, CR_SERVER_LOST, SQLSTATE_UNKNOWN,
+                                 ER(CR_SERVER_LOST_EXTENDED),
+                                 "sending authentication information",
+                                 errno);
+  }
+  mpvio->packets_written++;
+  return res;
+}
+
+/**
+  fills MYSQL_PLUGIN_VIO_INFO structure with the information about the
+  connection
+*/
+
+void mpvio_info(MARIADB_PVIO *pvio, MYSQL_PLUGIN_VIO_INFO *info)
+{
+  memset(info, 0, sizeof(*info));
+  switch (pvio->type) {
+  case PVIO_TYPE_SOCKET:
+    info->protocol= MYSQL_VIO_TCP;
+    ma_pvio_get_handle(pvio, &info->socket);
+    return;
+  case PVIO_TYPE_UNIXSOCKET:
+    info->protocol= MYSQL_VIO_SOCKET;
+    ma_pvio_get_handle(pvio, &info->socket);
+    return;
+    /*
+  case VIO_TYPE_SSL:
+    {
+      struct sockaddr addr;
+      SOCKET_SIZE_TYPE addrlen= sizeof(addr);
+      if (getsockname(vio->sd, &addr, &addrlen))
+        return;
+      info->protocol= addr.sa_family == AF_UNIX ?
+        MYSQL_VIO_SOCKET : MYSQL_VIO_TCP;
+      info->socket= vio->sd;
+      return;
+    }
+    */
+#ifdef _WIN32
+    /*
+  case VIO_TYPE_NAMEDPIPE:
+    info->protocol= MYSQL_VIO_PIPE;
+    info->handle= vio->hPipe;
+    return;
+    */
+/* not supported yet
+  case VIO_TYPE_SHARED_MEMORY:
+    info->protocol= MYSQL_VIO_MEMORY;
+    info->handle= vio->handle_file_map; 
+    return;
+*/
+#endif
+  default: DBUG_ASSERT(0);
+  }
+}
+
+static void client_mpvio_info(MYSQL_PLUGIN_VIO *vio,
+                              MYSQL_PLUGIN_VIO_INFO *info)
+{
+  MCPVIO_EXT *mpvio= (MCPVIO_EXT*)vio;
+  mpvio_info(mpvio->mysql->net.pvio, info);
+}
+
+/**
+  Client side of the plugin driver authentication.
+
+  @note this is used by both the mysql_real_connect and mysql_change_user
+
+  @param mysql       mysql
+  @param data        pointer to the plugin auth data (scramble) in the
+                     handshake packet
+  @param data_len    the length of the data
+  @param data_plugin a plugin that data were prepared for
+                     or 0 if it's mysql_change_user()
+  @param db          initial db to use, can be 0
+
+  @retval 0 ok
+  @retval 1 error
+*/
+
+int run_plugin_auth(MYSQL *mysql, char *data, uint data_len,
+                    const char *data_plugin, const char *db)
+{
+  const char    *auth_plugin_name= NULL;
+  auth_plugin_t *auth_plugin;
+  MCPVIO_EXT    mpvio;
+  ulong		pkt_length;
+  int           res;
+
+  /* determine the default/initial plugin to use */
+  if (mysql->server_capabilities & CLIENT_PLUGIN_AUTH)
+  {
+    if (mysql->options.extension && mysql->options.extension->default_auth)
+      auth_plugin_name= mysql->options.extension->default_auth;
+    else if (data_plugin)
+      auth_plugin_name= data_plugin;
+  }
+  if (!auth_plugin_name)
+  {
+    if (mysql->server_capabilities & CLIENT_PROTOCOL_41)
+       auth_plugin_name= native_password_plugin_name;
+    else
+       auth_plugin_name= "mysql_old_password";
+  }
+  if (!(auth_plugin= (auth_plugin_t*) mysql_client_find_plugin(mysql,
+                     auth_plugin_name, MYSQL_CLIENT_AUTHENTICATION_PLUGIN)))
+    auth_plugin= &dummy_fallback_client_plugin;
+
+  mysql->net.last_errno= 0; /* just in case */
+
+  if (data_plugin && strcmp(data_plugin, auth_plugin_name))
+  {
+    /* data was prepared for a different plugin, so we don't
+       send any data */
+    data= 0;
+    data_len= 0;
+  }
+
+  mpvio.mysql_change_user= data_plugin == 0;
+  mpvio.cached_server_reply.pkt= (uchar*)data;
+  mpvio.cached_server_reply.pkt_len= data_len;
+  mpvio.read_packet= client_mpvio_read_packet;
+  mpvio.write_packet= client_mpvio_write_packet;
+  mpvio.info= client_mpvio_info;
+  mpvio.mysql= mysql;
+  mpvio.packets_read= mpvio.packets_written= 0;
+  mpvio.db= db;
+
+retry:
+  mpvio.plugin= auth_plugin;
+
+  mysql->net.read_pos[0]= 0;
+  res= auth_plugin->authenticate_user((struct st_plugin_vio *)&mpvio, mysql);
+
+  if ((res == CR_ERROR && !mysql->net.buff) ||
+      (res > CR_OK && mysql->net.read_pos[0] != 254))
+  {
+    /*
+      the plugin returned an error. write it down in mysql,
+      unless the error code is CR_ERROR and mysql->net.last_errno
+      is already set (the plugin has done it)
+    */
+    if (res > CR_ERROR)
+      my_set_error(mysql, res, SQLSTATE_UNKNOWN, 0);
+    else
+      if (!mysql->net.last_errno) {
+        my_set_error(mysql, CR_UNKNOWN_ERROR, SQLSTATE_UNKNOWN, 0);
+      }
+    return 1;
+  }
+
+  /* read the OK packet (or use the cached value in mysql->net.read_pos */
+  if (res == CR_OK)
+    pkt_length= ma_net_safe_read(mysql);
+  else /* res == CR_OK_HANDSHAKE_COMPLETE or an error */
+    pkt_length= mpvio.last_read_packet_len;
+
+  if (pkt_length == packet_error)
+  {
+    if (mysql->net.last_errno == CR_SERVER_LOST)
+      my_set_error(mysql, CR_SERVER_LOST, SQLSTATE_UNKNOWN,
+                          ER(CR_SERVER_LOST_EXTENDED),
+                          "reading authorization packet",
+                          errno);
+    return 1;
+  }
+  if (mysql->net.read_pos[0] == 254)
+  {
+    /* The server asked to use a different authentication plugin */
+    if (pkt_length == 1)
+    {
+      /* old "use short scramble" packet */
+      auth_plugin_name= old_password_plugin_name;
+      mpvio.cached_server_reply.pkt= (uchar*)mysql->scramble_buff;
+      mpvio.cached_server_reply.pkt_len= SCRAMBLE_LENGTH + 1;
+    }
+    else
+    {
+      /* new "use different plugin" packet */
+      uint len;
+      auth_plugin_name= (char*)mysql->net.read_pos + 1;
+      len= (uint)strlen(auth_plugin_name); /* safe as ma_net_read always appends \0 */
+      mpvio.cached_server_reply.pkt_len= pkt_length - len - 2;
+      mpvio.cached_server_reply.pkt= mysql->net.read_pos + len + 2;
+    }
+    if (!(auth_plugin= (auth_plugin_t *) mysql_client_find_plugin(mysql,
+                         auth_plugin_name, MYSQL_CLIENT_AUTHENTICATION_PLUGIN)))
+      auth_plugin= &dummy_fallback_client_plugin;
+
+    goto retry;
+
+  }
+  /*
+    net->read_pos[0] should always be 0 here if the server implements
+    the protocol correctly
+  */
+  if (mysql->net.read_pos[0] == 0)
+    return ma_read_ok_packet(mysql, mysql->net.read_pos + 1, pkt_length);
+  return 1;
+}
+
diff --git a/libmariadb/plugins/auth/old_password.c b/libmariadb/plugins/auth/old_password.c
new file mode 100644
index 00000000..07756e92
--- /dev/null
+++ b/libmariadb/plugins/auth/old_password.c
@@ -0,0 +1,117 @@
+/************************************************************************************
+   Copyright (C) 2014,2015,2018 MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+*************************************************************************************/
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+#include <errmsg.h>
+
+
+/* function prototypes */
+static int auth_old_password(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql);
+
+typedef struct st_mysql_client_plugin_AUTHENTICATION auth_plugin_t;
+
+typedef struct {
+  int (*read_packet)(struct st_plugin_vio *vio, uchar **buf);
+  int (*write_packet)(struct st_plugin_vio *vio, const uchar *pkt, size_t pkt_len);
+  void (*info)(struct st_plugin_vio *vio, struct st_plugin_vio_info *info);
+  /* -= end of MYSQL_PLUGIN_VIO =- */
+  MYSQL *mysql;
+  auth_plugin_t *plugin;             /**< what plugin we're under */
+  const char *db;
+  struct {
+    uchar *pkt;                      /**< pointer into NET::buff */
+    uint pkt_len;
+  } cached_server_reply;
+  uint packets_read, packets_written; /**< counters for send/received packets */
+  my_bool mysql_change_user;          /**< if it's mysql_change_user() */
+  int last_read_packet_len;           /**< the length of the last *read* packet */
+} MCPVIO_EXT;
+
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION mysql_old_password_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "mysql_old_password",
+  "Sergei Golubchik, R.J. Silk, Georg Richter",
+  "Old (pre 4.1) authentication plugin",
+  {1,0,0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  auth_old_password
+};
+
+/**
+  client authentication plugin that does old MySQL authentication
+  using an 8-byte (4.0-) scramble
+*/
+
+static int auth_old_password(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  uchar *pkt;
+  int pkt_len;
+
+  if (((MCPVIO_EXT *)vio)->mysql_change_user)
+  {
+    /*
+      in mysql_change_user() the client sends the first packet.
+      we use the old scramble.
+    */
+    pkt= (uchar*)mysql->scramble_buff;
+  }
+  else
+  {
+    /* read the scramble */
+    if ((pkt_len= vio->read_packet(vio, &pkt)) < 0)
+      return CR_ERROR;
+
+    if (pkt_len != SCRAMBLE_LENGTH_323 + 1 &&
+        pkt_len != SCRAMBLE_LENGTH + 1)
+        return CR_SERVER_HANDSHAKE_ERR;
+
+    /* save it in MYSQL */
+    memmove(mysql->scramble_buff, pkt, pkt_len - 1);
+    mysql->scramble_buff[pkt_len - 1] = 0;
+  }
+
+  if (mysql && mysql->passwd[0])
+  {
+    char scrambled[SCRAMBLE_LENGTH_323 + 1];
+    ma_scramble_323(scrambled, (char*)pkt, mysql->passwd);
+    if (vio->write_packet(vio, (uchar*)scrambled, SCRAMBLE_LENGTH_323 + 1))
+      return CR_ERROR;
+  }
+  else
+    if (vio->write_packet(vio, 0, 0)) /* no password */
+      return CR_ERROR;
+
+  return CR_OK;
+}
+
+
+
diff --git a/libmariadb/plugins/auth/ref10/api.h b/libmariadb/plugins/auth/ref10/api.h
new file mode 100644
index 00000000..9f1db7e5
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/api.h
@@ -0,0 +1,3 @@
+#define CRYPTO_PUBLICKEYBYTES 32
+#define CRYPTO_BYTES 64
+#define CRYPTO_DETERMINISTIC 1
diff --git a/libmariadb/plugins/auth/ref10/base.h b/libmariadb/plugins/auth/ref10/base.h
new file mode 100644
index 00000000..573bd8a0
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/base.h
@@ -0,0 +1,1344 @@
+{
+ {
+  { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 },
+  { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 },
+  { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 },
+ },
+ {
+  { -12815894,-12976347,-21581243,11784320,-25355658,-2750717,-11717903,-3814571,-358445,-10211303 },
+  { -21703237,6903825,27185491,6451973,-29577724,-9554005,-15616551,11189268,-26829678,-5319081 },
+  { 26966642,11152617,32442495,15396054,14353839,-12752335,-3128826,-9541118,-15472047,-4166697 },
+ },
+ {
+  { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 },
+  { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 },
+  { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 },
+ },
+ {
+  { -17036878,13921892,10945806,-6033431,27105052,-16084379,-28926210,15006023,3284568,-6276540 },
+  { 23599295,-8306047,-11193664,-7687416,13236774,10506355,7464579,9656445,13059162,10374397 },
+  { 7798556,16710257,3033922,2874086,28997861,2835604,32406664,-3839045,-641708,-101325 },
+ },
+ {
+  { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 },
+  { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 },
+  { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 },
+ },
+ {
+  { -15371964,-12862754,32573250,4720197,-26436522,5875511,-19188627,-15224819,-9818940,-12085777 },
+  { -8549212,109983,15149363,2178705,22900618,4543417,3044240,-15689887,1762328,14866737 },
+  { -18199695,-15951423,-10473290,1707278,-17185920,3916101,-28236412,3959421,27914454,4383652 },
+ },
+ {
+  { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 },
+  { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 },
+  { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 },
+ },
+ {
+  { 14499471,-2729599,-33191113,-4254652,28494862,14271267,30290735,10876454,-33154098,2381726 },
+  { -7195431,-2655363,-14730155,462251,-27724326,3941372,-6236617,3696005,-32300832,15351955 },
+  { 27431194,8222322,16448760,-3907995,-18707002,11938355,-32961401,-2970515,29551813,10109425 },
+ },
+},
+{
+ {
+  { -13657040,-13155431,-31283750,11777098,21447386,6519384,-2378284,-1627556,10092783,-4764171 },
+  { 27939166,14210322,4677035,16277044,-22964462,-12398139,-32508754,12005538,-17810127,12803510 },
+  { 17228999,-15661624,-1233527,300140,-1224870,-11714777,30364213,-9038194,18016357,4397660 },
+ },
+ {
+  { -10958843,-7690207,4776341,-14954238,27850028,-15602212,-26619106,14544525,-17477504,982639 },
+  { 29253598,15796703,-2863982,-9908884,10057023,3163536,7332899,-4120128,-21047696,9934963 },
+  { 5793303,16271923,-24131614,-10116404,29188560,1206517,-14747930,4559895,-30123922,-10897950 },
+ },
+ {
+  { -27643952,-11493006,16282657,-11036493,28414021,-15012264,24191034,4541697,-13338309,5500568 },
+  { 12650548,-1497113,9052871,11355358,-17680037,-8400164,-17430592,12264343,10874051,13524335 },
+  { 25556948,-3045990,714651,2510400,23394682,-10415330,33119038,5080568,-22528059,5376628 },
+ },
+ {
+  { -26088264,-4011052,-17013699,-3537628,-6726793,1920897,-22321305,-9447443,4535768,1569007 },
+  { -2255422,14606630,-21692440,-8039818,28430649,8775819,-30494562,3044290,31848280,12543772 },
+  { -22028579,2943893,-31857513,6777306,13784462,-4292203,-27377195,-2062731,7718482,14474653 },
+ },
+ {
+  { 2385315,2454213,-22631320,46603,-4437935,-15680415,656965,-7236665,24316168,-5253567 },
+  { 13741529,10911568,-33233417,-8603737,-20177830,-1033297,33040651,-13424532,-20729456,8321686 },
+  { 21060490,-2212744,15712757,-4336099,1639040,10656336,23845965,-11874838,-9984458,608372 },
+ },
+ {
+  { -13672732,-15087586,-10889693,-7557059,-6036909,11305547,1123968,-6780577,27229399,23887 },
+  { -23244140,-294205,-11744728,14712571,-29465699,-2029617,12797024,-6440308,-1633405,16678954 },
+  { -29500620,4770662,-16054387,14001338,7830047,9564805,-1508144,-4795045,-17169265,4904953 },
+ },
+ {
+  { 24059557,14617003,19037157,-15039908,19766093,-14906429,5169211,16191880,2128236,-4326833 },
+  { -16981152,4124966,-8540610,-10653797,30336522,-14105247,-29806336,916033,-6882542,-2986532 },
+  { -22630907,12419372,-7134229,-7473371,-16478904,16739175,285431,2763829,15736322,4143876 },
+ },
+ {
+  { 2379352,11839345,-4110402,-5988665,11274298,794957,212801,-14594663,23527084,-16458268 },
+  { 33431127,-11130478,-17838966,-15626900,8909499,8376530,-32625340,4087881,-15188911,-14416214 },
+  { 1767683,7197987,-13205226,-2022635,-13091350,448826,5799055,4357868,-4774191,-16323038 },
+ },
+},
+{
+ {
+  { 6721966,13833823,-23523388,-1551314,26354293,-11863321,23365147,-3949732,7390890,2759800 },
+  { 4409041,2052381,23373853,10530217,7676779,-12885954,21302353,-4264057,1244380,-12919645 },
+  { -4421239,7169619,4982368,-2957590,30256825,-2777540,14086413,9208236,15886429,16489664 },
+ },
+ {
+  { 1996075,10375649,14346367,13311202,-6874135,-16438411,-13693198,398369,-30606455,-712933 },
+  { -25307465,9795880,-2777414,14878809,-33531835,14780363,13348553,12076947,-30836462,5113182 },
+  { -17770784,11797796,31950843,13929123,-25888302,12288344,-30341101,-7336386,13847711,5387222 },
+ },
+ {
+  { -18582163,-3416217,17824843,-2340966,22744343,-10442611,8763061,3617786,-19600662,10370991 },
+  { 20246567,-14369378,22358229,-543712,18507283,-10413996,14554437,-8746092,32232924,16763880 },
+  { 9648505,10094563,26416693,14745928,-30374318,-6472621,11094161,15689506,3140038,-16510092 },
+ },
+ {
+  { -16160072,5472695,31895588,4744994,8823515,10365685,-27224800,9448613,-28774454,366295 },
+  { 19153450,11523972,-11096490,-6503142,-24647631,5420647,28344573,8041113,719605,11671788 },
+  { 8678025,2694440,-6808014,2517372,4964326,11152271,-15432916,-15266516,27000813,-10195553 },
+ },
+ {
+  { -15157904,7134312,8639287,-2814877,-7235688,10421742,564065,5336097,6750977,-14521026 },
+  { 11836410,-3979488,26297894,16080799,23455045,15735944,1695823,-8819122,8169720,16220347 },
+  { -18115838,8653647,17578566,-6092619,-8025777,-16012763,-11144307,-2627664,-5990708,-14166033 },
+ },
+ {
+  { -23308498,-10968312,15213228,-10081214,-30853605,-11050004,27884329,2847284,2655861,1738395 },
+  { -27537433,-14253021,-25336301,-8002780,-9370762,8129821,21651608,-3239336,-19087449,-11005278 },
+  { 1533110,3437855,23735889,459276,29970501,11335377,26030092,5821408,10478196,8544890 },
+ },
+ {
+  { 32173121,-16129311,24896207,3921497,22579056,-3410854,19270449,12217473,17789017,-3395995 },
+  { -30552961,-2228401,-15578829,-10147201,13243889,517024,15479401,-3853233,30460520,1052596 },
+  { -11614875,13323618,32618793,8175907,-15230173,12596687,27491595,-4612359,3179268,-9478891 },
+ },
+ {
+  { 31947069,-14366651,-4640583,-15339921,-15125977,-6039709,-14756777,-16411740,19072640,-9511060 },
+  { 11685058,11822410,3158003,-13952594,33402194,-4165066,5977896,-5215017,473099,5040608 },
+  { -20290863,8198642,-27410132,11602123,1290375,-2799760,28326862,1721092,-19558642,-3131606 },
+ },
+},
+{
+ {
+  { 7881532,10687937,7578723,7738378,-18951012,-2553952,21820786,8076149,-27868496,11538389 },
+  { -19935666,3899861,18283497,-6801568,-15728660,-11249211,8754525,7446702,-5676054,5797016 },
+  { -11295600,-3793569,-15782110,-7964573,12708869,-8456199,2014099,-9050574,-2369172,-5877341 },
+ },
+ {
+  { -22472376,-11568741,-27682020,1146375,18956691,16640559,1192730,-3714199,15123619,10811505 },
+  { 14352098,-3419715,-18942044,10822655,32750596,4699007,-70363,15776356,-28886779,-11974553 },
+  { -28241164,-8072475,-4978962,-5315317,29416931,1847569,-20654173,-16484855,4714547,-9600655 },
+ },
+ {
+  { 15200332,8368572,19679101,15970074,-31872674,1959451,24611599,-4543832,-11745876,12340220 },
+  { 12876937,-10480056,33134381,6590940,-6307776,14872440,9613953,8241152,15370987,9608631 },
+  { -4143277,-12014408,8446281,-391603,4407738,13629032,-7724868,15866074,-28210621,-8814099 },
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+  { -10031494,11262626,27384172,2271902,26947504,-15997771,39944,6114064,33514190,2333242 },
+ },
+ {
+  { -21433588,-12421821,8119782,7219913,-21830522,-9016134,-6679750,-12670638,24350578,-13450001 },
+  { -4116307,-11271533,-23886186,4843615,-30088339,690623,-31536088,-10406836,8317860,12352766 },
+  { 18200138,-14475911,-33087759,-2696619,-23702521,-9102511,-23552096,-2287550,20712163,6719373 },
+ },
+ {
+  { 26656208,6075253,-7858556,1886072,-28344043,4262326,11117530,-3763210,26224235,-3297458 },
+  { -17168938,-14854097,-3395676,-16369877,-19954045,14050420,21728352,9493610,18620611,-16428628 },
+  { -13323321,13325349,11432106,5964811,18609221,6062965,-5269471,-9725556,-30701573,-16479657 },
+ },
+ {
+  { -23860538,-11233159,26961357,1640861,-32413112,-16737940,12248509,-5240639,13735342,1934062 },
+  { 25089769,6742589,17081145,-13406266,21909293,-16067981,-15136294,-3765346,-21277997,5473616 },
+  { 31883677,-7961101,1083432,-11572403,22828471,13290673,-7125085,12469656,29111212,-5451014 },
+ },
+ {
+  { 24244947,-15050407,-26262976,2791540,-14997599,16666678,24367466,6388839,-10295587,452383 },
+  { -25640782,-3417841,5217916,16224624,19987036,-4082269,-24236251,-5915248,15766062,8407814 },
+  { -20406999,13990231,15495425,16395525,5377168,15166495,-8917023,-4388953,-8067909,2276718 },
+ },
+ {
+  { 30157918,12924066,-17712050,9245753,19895028,3368142,-23827587,5096219,22740376,-7303417 },
+  { 2041139,-14256350,7783687,13876377,-25946985,-13352459,24051124,13742383,-15637599,13295222 },
+  { 33338237,-8505733,12532113,7977527,9106186,-1715251,-17720195,-4612972,-4451357,-14669444 },
+ },
+ {
+  { -20045281,5454097,-14346548,6447146,28862071,1883651,-2469266,-4141880,7770569,9620597 },
+  { 23208068,7979712,33071466,8149229,1758231,-10834995,30945528,-1694323,-33502340,-14767970 },
+  { 1439958,-16270480,-1079989,-793782,4625402,10647766,-5043801,1220118,30494170,-11440799 },
+ },
+ {
+  { -5037580,-13028295,-2970559,-3061767,15640974,-6701666,-26739026,926050,-1684339,-13333647 },
+  { 13908495,-3549272,30919928,-6273825,-21521863,7989039,9021034,9078865,3353509,4033511 },
+  { -29663431,-15113610,32259991,-344482,24295849,-12912123,23161163,8839127,27485041,7356032 },
+ },
+},
+{
+ {
+  { 9661027,705443,11980065,-5370154,-1628543,14661173,-6346142,2625015,28431036,-16771834 },
+  { -23839233,-8311415,-25945511,7480958,-17681669,-8354183,-22545972,14150565,15970762,4099461 },
+  { 29262576,16756590,26350592,-8793563,8529671,-11208050,13617293,-9937143,11465739,8317062 },
+ },
+ {
+  { -25493081,-6962928,32500200,-9419051,-23038724,-2302222,14898637,3848455,20969334,-5157516 },
+  { -20384450,-14347713,-18336405,13884722,-33039454,2842114,-21610826,-3649888,11177095,14989547 },
+  { -24496721,-11716016,16959896,2278463,12066309,10137771,13515641,2581286,-28487508,9930240 },
+ },
+ {
+  { -17751622,-2097826,16544300,-13009300,-15914807,-14949081,18345767,-13403753,16291481,-5314038 },
+  { -33229194,2553288,32678213,9875984,8534129,6889387,-9676774,6957617,4368891,9788741 },
+  { 16660756,7281060,-10830758,12911820,20108584,-8101676,-21722536,-8613148,16250552,-11111103 },
+ },
+ {
+  { -19765507,2390526,-16551031,14161980,1905286,6414907,4689584,10604807,-30190403,4782747 },
+  { -1354539,14736941,-7367442,-13292886,7710542,-14155590,-9981571,4383045,22546403,437323 },
+  { 31665577,-12180464,-16186830,1491339,-18368625,3294682,27343084,2786261,-30633590,-14097016 },
+ },
+ {
+  { -14467279,-683715,-33374107,7448552,19294360,14334329,-19690631,2355319,-19284671,-6114373 },
+  { 15121312,-15796162,6377020,-6031361,-10798111,-12957845,18952177,15496498,-29380133,11754228 },
+  { -2637277,-13483075,8488727,-14303896,12728761,-1622493,7141596,11724556,22761615,-10134141 },
+ },
+ {
+  { 16918416,11729663,-18083579,3022987,-31015732,-13339659,-28741185,-12227393,32851222,11717399 },
+  { 11166634,7338049,-6722523,4531520,-29468672,-7302055,31474879,3483633,-1193175,-4030831 },
+  { -185635,9921305,31456609,-13536438,-12013818,13348923,33142652,6546660,-19985279,-3948376 },
+ },
+ {
+  { -32460596,11266712,-11197107,-7899103,31703694,3855903,-8537131,-12833048,-30772034,-15486313 },
+  { -18006477,12709068,3991746,-6479188,-21491523,-10550425,-31135347,-16049879,10928917,3011958 },
+  { -6957757,-15594337,31696059,334240,29576716,14796075,-30831056,-12805180,18008031,10258577 },
+ },
+ {
+  { -22448644,15655569,7018479,-4410003,-30314266,-1201591,-1853465,1367120,25127874,6671743 },
+  { 29701166,-14373934,-10878120,9279288,-17568,13127210,21382910,11042292,25838796,4642684 },
+  { -20430234,14955537,-24126347,8124619,-5369288,-5990470,30468147,-13900640,18423289,4177476 },
+ },
+},
diff --git a/libmariadb/plugins/auth/ref10/base2.h b/libmariadb/plugins/auth/ref10/base2.h
new file mode 100644
index 00000000..8c538440
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/base2.h
@@ -0,0 +1,40 @@
+ {
+  { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 },
+  { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 },
+  { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 },
+ },
+ {
+  { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 },
+  { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 },
+  { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 },
+ },
+ {
+  { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 },
+  { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 },
+  { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 },
+ },
+ {
+  { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 },
+  { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 },
+  { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 },
+ },
+ {
+  { -22518993,-6692182,14201702,-8745502,-23510406,8844726,18474211,-1361450,-13062696,13821877 },
+  { -6455177,-7839871,3374702,-4740862,-27098617,-10571707,31655028,-7212327,18853322,-14220951 },
+  { 4566830,-12963868,-28974889,-12240689,-7602672,-2830569,-8514358,-10431137,2207753,-3209784 },
+ },
+ {
+  { -25154831,-4185821,29681144,7868801,-6854661,-9423865,-12437364,-663000,-31111463,-16132436 },
+  { 25576264,-2703214,7349804,-11814844,16472782,9300885,3844789,15725684,171356,6466918 },
+  { 23103977,13316479,9739013,-16149481,817875,-15038942,8965339,-14088058,-30714912,16193877 },
+ },
+ {
+  { -33521811,3180713,-2394130,14003687,-16903474,-16270840,17238398,4729455,-18074513,9256800 },
+  { -25182317,-4174131,32336398,5036987,-21236817,11360617,22616405,9761698,-19827198,630305 },
+  { -13720693,2639453,-24237460,-7406481,9494427,-5774029,-6554551,-15960994,-2449256,-14291300 },
+ },
+ {
+  { -3151181,-5046075,9282714,6866145,-31907062,-863023,-18940575,15033784,25105118,-7894876 },
+  { -24326370,15950226,-31801215,-14592823,-11662737,-5090925,1573892,-2625887,2198790,-15804619 },
+  { -3099351,10324967,-2241613,7453183,-5446979,-2735503,-13812022,-16236442,-32461234,-12290683 },
+ },
diff --git a/libmariadb/plugins/auth/ref10/common.h b/libmariadb/plugins/auth/ref10/common.h
new file mode 100644
index 00000000..4a52f774
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/common.h
@@ -0,0 +1,23 @@
+/*
+   Copyright (c) 2017, MariaDB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA */
+
+#include <mysql.h>
+#include <string.h>
+
+#include "ref10/api.h"
+#include "crypto_sign.h"
+
+#define NONCE_BYTES 32
diff --git a/libmariadb/plugins/auth/ref10/crypto_hash_sha512.h b/libmariadb/plugins/auth/ref10/crypto_hash_sha512.h
new file mode 100644
index 00000000..c023f30f
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_hash_sha512.h
@@ -0,0 +1,7 @@
+#if defined(MYSQL_CLIENT) || defined(LIBMARIADB)
+#include <ma_crypt.h>
+#define crypto_hash_sha512(DST,SRC,SLEN) ma_hash(MA_HASH_SHA512, SRC, SLEN, DST)
+#else
+#include <mysql/service_sha2.h>
+#define crypto_hash_sha512(DST,SRC,SLEN) my_sha512(DST,(char*)(SRC),SLEN)
+#endif
diff --git a/libmariadb/plugins/auth/ref10/crypto_int32.h b/libmariadb/plugins/auth/ref10/crypto_int32.h
new file mode 100644
index 00000000..642fca05
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_int32.h
@@ -0,0 +1,5 @@
+#include <stdint.h>
+#include <sys/types.h>
+typedef int32_t crypto_int32;
+
+#define select ed25519_select
diff --git a/libmariadb/plugins/auth/ref10/crypto_int64.h b/libmariadb/plugins/auth/ref10/crypto_int64.h
new file mode 100644
index 00000000..a308e406
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_int64.h
@@ -0,0 +1,5 @@
+#include <stdint.h>
+#include <sys/types.h>
+typedef int64_t crypto_int64;
+
+#define select ed25519_select
diff --git a/libmariadb/plugins/auth/ref10/crypto_sign.h b/libmariadb/plugins/auth/ref10/crypto_sign.h
new file mode 100644
index 00000000..5f9b3437
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_sign.h
@@ -0,0 +1,13 @@
+int crypto_sign_keypair(
+  unsigned char *pk,
+  unsigned char *pw, unsigned long long pwlen
+);
+int ma_crypto_sign(
+  unsigned char *sm,
+  const unsigned char *m, unsigned long long mlen,
+  const unsigned char *pw, unsigned long long pwlen
+);
+int crypto_sign_open(
+  unsigned char *sm, unsigned long long smlen,
+  const unsigned char *pk
+);
diff --git a/libmariadb/plugins/auth/ref10/crypto_uint32.h b/libmariadb/plugins/auth/ref10/crypto_uint32.h
new file mode 100644
index 00000000..ab2977ca
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_uint32.h
@@ -0,0 +1,5 @@
+#include <stdint.h>
+#include <sys/types.h>
+typedef uint32_t crypto_uint32;
+
+#define select ed25519_select
diff --git a/libmariadb/plugins/auth/ref10/crypto_uint64.h b/libmariadb/plugins/auth/ref10/crypto_uint64.h
new file mode 100644
index 00000000..029c6819
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_uint64.h
@@ -0,0 +1,5 @@
+#include <stdint.h>
+#include <sys/types.h>
+typedef uint64_t crypto_uint64;
+
+#define select ed25519_select
diff --git a/libmariadb/plugins/auth/ref10/crypto_verify.h b/libmariadb/plugins/auth/ref10/crypto_verify.h
new file mode 100644
index 00000000..33e11b1e
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_verify.h
@@ -0,0 +1 @@
+int crypto_verify(const unsigned char *x,const unsigned char *y);
diff --git a/libmariadb/plugins/auth/ref10/crypto_verify_32.h b/libmariadb/plugins/auth/ref10/crypto_verify_32.h
new file mode 100644
index 00000000..d8235b75
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/crypto_verify_32.h
@@ -0,0 +1,2 @@
+#define crypto_verify_32 crypto_verify
+int crypto_verify(const unsigned char *x,const unsigned char *y);
diff --git a/libmariadb/plugins/auth/ref10/d.h b/libmariadb/plugins/auth/ref10/d.h
new file mode 100644
index 00000000..e25f5783
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/d.h
@@ -0,0 +1 @@
+-10913610,13857413,-15372611,6949391,114729,-8787816,-6275908,-3247719,-18696448,-12055116
diff --git a/libmariadb/plugins/auth/ref10/d2.h b/libmariadb/plugins/auth/ref10/d2.h
new file mode 100644
index 00000000..01aaec75
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/d2.h
@@ -0,0 +1 @@
+-21827239,-5839606,-30745221,13898782,229458,15978800,-12551817,-6495438,29715968,9444199
diff --git a/libmariadb/plugins/auth/ref10/fe.h b/libmariadb/plugins/auth/ref10/fe.h
new file mode 100644
index 00000000..60c308ba
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe.h
@@ -0,0 +1,56 @@
+#ifndef FE_H
+#define FE_H
+
+#include "crypto_int32.h"
+
+typedef crypto_int32 fe[10];
+
+/*
+fe means field element.
+Here the field is \Z/(2^255-19).
+An element t, entries t[0]...t[9], represents the integer
+t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
+Bounds on each t[i] vary depending on context.
+*/
+
+#define fe_frombytes crypto_sign_ed25519_ref10_fe_frombytes
+#define fe_tobytes crypto_sign_ed25519_ref10_fe_tobytes
+#define fe_copy crypto_sign_ed25519_ref10_fe_copy
+#define fe_isnonzero crypto_sign_ed25519_ref10_fe_isnonzero
+#define fe_isnegative crypto_sign_ed25519_ref10_fe_isnegative
+#define fe_0 crypto_sign_ed25519_ref10_fe_0
+#define fe_1 crypto_sign_ed25519_ref10_fe_1
+#define fe_cswap crypto_sign_ed25519_ref10_fe_cswap
+#define fe_cmov crypto_sign_ed25519_ref10_fe_cmov
+#define fe_add crypto_sign_ed25519_ref10_fe_add
+#define fe_sub crypto_sign_ed25519_ref10_fe_sub
+#define fe_neg crypto_sign_ed25519_ref10_fe_neg
+#define fe_mul crypto_sign_ed25519_ref10_fe_mul
+#define fe_sq crypto_sign_ed25519_ref10_fe_sq
+#define fe_sq2 crypto_sign_ed25519_ref10_fe_sq2
+#define fe_mul121666 crypto_sign_ed25519_ref10_fe_mul121666
+#define fe_invert crypto_sign_ed25519_ref10_fe_invert
+#define fe_pow22523 crypto_sign_ed25519_ref10_fe_pow22523
+
+extern void fe_frombytes(fe,const unsigned char *);
+extern void fe_tobytes(unsigned char *,const fe);
+
+extern void fe_copy(fe,const fe);
+extern int fe_isnonzero(const fe);
+extern int fe_isnegative(const fe);
+extern void fe_0(fe);
+extern void fe_1(fe);
+extern void fe_cswap(fe,fe,unsigned int);
+extern void fe_cmov(fe,const fe,unsigned int);
+
+extern void fe_add(fe,const fe,const fe);
+extern void fe_sub(fe,const fe,const fe);
+extern void fe_neg(fe,const fe);
+extern void fe_mul(fe,const fe,const fe);
+extern void fe_sq(fe,const fe);
+extern void fe_sq2(fe,const fe);
+extern void fe_mul121666(fe,const fe);
+extern void fe_invert(fe,const fe);
+extern void fe_pow22523(fe,const fe);
+
+#endif
diff --git a/libmariadb/plugins/auth/ref10/fe_0.c b/libmariadb/plugins/auth/ref10/fe_0.c
new file mode 100644
index 00000000..ec879d73
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_0.c
@@ -0,0 +1,19 @@
+#include "fe.h"
+
+/*
+h = 0
+*/
+
+void fe_0(fe h)
+{
+  h[0] = 0;
+  h[1] = 0;
+  h[2] = 0;
+  h[3] = 0;
+  h[4] = 0;
+  h[5] = 0;
+  h[6] = 0;
+  h[7] = 0;
+  h[8] = 0;
+  h[9] = 0;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_1.c b/libmariadb/plugins/auth/ref10/fe_1.c
new file mode 100644
index 00000000..8cf77848
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_1.c
@@ -0,0 +1,19 @@
+#include "fe.h"
+
+/*
+h = 1
+*/
+
+void fe_1(fe h)
+{
+  h[0] = 1;
+  h[1] = 0;
+  h[2] = 0;
+  h[3] = 0;
+  h[4] = 0;
+  h[5] = 0;
+  h[6] = 0;
+  h[7] = 0;
+  h[8] = 0;
+  h[9] = 0;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_add.c b/libmariadb/plugins/auth/ref10/fe_add.c
new file mode 100644
index 00000000..e6a81da2
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_add.c
@@ -0,0 +1,57 @@
+#include "fe.h"
+
+/*
+h = f + g
+Can overlap h with f or g.
+
+Preconditions:
+   |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+   |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+
+Postconditions:
+   |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+void fe_add(fe h,const fe f,const fe g)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 g0 = g[0];
+  crypto_int32 g1 = g[1];
+  crypto_int32 g2 = g[2];
+  crypto_int32 g3 = g[3];
+  crypto_int32 g4 = g[4];
+  crypto_int32 g5 = g[5];
+  crypto_int32 g6 = g[6];
+  crypto_int32 g7 = g[7];
+  crypto_int32 g8 = g[8];
+  crypto_int32 g9 = g[9];
+  crypto_int32 h0 = f0 + g0;
+  crypto_int32 h1 = f1 + g1;
+  crypto_int32 h2 = f2 + g2;
+  crypto_int32 h3 = f3 + g3;
+  crypto_int32 h4 = f4 + g4;
+  crypto_int32 h5 = f5 + g5;
+  crypto_int32 h6 = f6 + g6;
+  crypto_int32 h7 = f7 + g7;
+  crypto_int32 h8 = f8 + g8;
+  crypto_int32 h9 = f9 + g9;
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_cmov.c b/libmariadb/plugins/auth/ref10/fe_cmov.c
new file mode 100644
index 00000000..8ca584fb
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_cmov.c
@@ -0,0 +1,63 @@
+#include "fe.h"
+
+/*
+Replace (f,g) with (g,g) if b == 1;
+replace (f,g) with (f,g) if b == 0.
+
+Preconditions: b in {0,1}.
+*/
+
+void fe_cmov(fe f,const fe g,unsigned int b)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 g0 = g[0];
+  crypto_int32 g1 = g[1];
+  crypto_int32 g2 = g[2];
+  crypto_int32 g3 = g[3];
+  crypto_int32 g4 = g[4];
+  crypto_int32 g5 = g[5];
+  crypto_int32 g6 = g[6];
+  crypto_int32 g7 = g[7];
+  crypto_int32 g8 = g[8];
+  crypto_int32 g9 = g[9];
+  crypto_int32 x0 = f0 ^ g0;
+  crypto_int32 x1 = f1 ^ g1;
+  crypto_int32 x2 = f2 ^ g2;
+  crypto_int32 x3 = f3 ^ g3;
+  crypto_int32 x4 = f4 ^ g4;
+  crypto_int32 x5 = f5 ^ g5;
+  crypto_int32 x6 = f6 ^ g6;
+  crypto_int32 x7 = f7 ^ g7;
+  crypto_int32 x8 = f8 ^ g8;
+  crypto_int32 x9 = f9 ^ g9;
+  b = -b;
+  x0 &= b;
+  x1 &= b;
+  x2 &= b;
+  x3 &= b;
+  x4 &= b;
+  x5 &= b;
+  x6 &= b;
+  x7 &= b;
+  x8 &= b;
+  x9 &= b;
+  f[0] = f0 ^ x0;
+  f[1] = f1 ^ x1;
+  f[2] = f2 ^ x2;
+  f[3] = f3 ^ x3;
+  f[4] = f4 ^ x4;
+  f[5] = f5 ^ x5;
+  f[6] = f6 ^ x6;
+  f[7] = f7 ^ x7;
+  f[8] = f8 ^ x8;
+  f[9] = f9 ^ x9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_copy.c b/libmariadb/plugins/auth/ref10/fe_copy.c
new file mode 100644
index 00000000..9c5bf865
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_copy.c
@@ -0,0 +1,29 @@
+#include "fe.h"
+
+/*
+h = f
+*/
+
+void fe_copy(fe h,const fe f)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  h[0] = f0;
+  h[1] = f1;
+  h[2] = f2;
+  h[3] = f3;
+  h[4] = f4;
+  h[5] = f5;
+  h[6] = f6;
+  h[7] = f7;
+  h[8] = f8;
+  h[9] = f9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_frombytes.c b/libmariadb/plugins/auth/ref10/fe_frombytes.c
new file mode 100644
index 00000000..5c179174
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_frombytes.c
@@ -0,0 +1,73 @@
+#include "fe.h"
+#include "crypto_int64.h"
+#include "crypto_uint64.h"
+
+static crypto_uint64 load_3(const unsigned char *in)
+{
+  crypto_uint64 result;
+  result = (crypto_uint64) in[0];
+  result |= ((crypto_uint64) in[1]) << 8;
+  result |= ((crypto_uint64) in[2]) << 16;
+  return result;
+}
+
+static crypto_uint64 load_4(const unsigned char *in)
+{
+  crypto_uint64 result;
+  result = (crypto_uint64) in[0];
+  result |= ((crypto_uint64) in[1]) << 8;
+  result |= ((crypto_uint64) in[2]) << 16;
+  result |= ((crypto_uint64) in[3]) << 24;
+  return result;
+}
+
+/*
+Ignores top bit of h.
+*/
+
+void fe_frombytes(fe h,const unsigned char *s)
+{
+  crypto_int64 h0 = load_4(s);
+  crypto_int64 h1 = load_3(s + 4) << 6;
+  crypto_int64 h2 = load_3(s + 7) << 5;
+  crypto_int64 h3 = load_3(s + 10) << 3;
+  crypto_int64 h4 = load_3(s + 13) << 2;
+  crypto_int64 h5 = load_4(s + 16);
+  crypto_int64 h6 = load_3(s + 20) << 7;
+  crypto_int64 h7 = load_3(s + 23) << 5;
+  crypto_int64 h8 = load_3(s + 26) << 4;
+  crypto_int64 h9 = (load_3(s + 29) & 8388607) << 2;
+  crypto_int64 carry0;
+  crypto_int64 carry1;
+  crypto_int64 carry2;
+  crypto_int64 carry3;
+  crypto_int64 carry4;
+  crypto_int64 carry5;
+  crypto_int64 carry6;
+  crypto_int64 carry7;
+  crypto_int64 carry8;
+  crypto_int64 carry9;
+
+  carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+  carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+  carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+  carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+  carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+  carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+  carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+  carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_invert.c b/libmariadb/plugins/auth/ref10/fe_invert.c
new file mode 100644
index 00000000..bcfdb8ff
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_invert.c
@@ -0,0 +1,14 @@
+#include "fe.h"
+
+void fe_invert(fe out,const fe z)
+{
+  fe t0;
+  fe t1;
+  fe t2;
+  fe t3;
+  int i;
+
+#include "pow225521.h"
+
+  return;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_isnegative.c b/libmariadb/plugins/auth/ref10/fe_isnegative.c
new file mode 100644
index 00000000..3b2c8b8d
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_isnegative.c
@@ -0,0 +1,16 @@
+#include "fe.h"
+
+/*
+return 1 if f is in {1,3,5,...,q-2}
+return 0 if f is in {0,2,4,...,q-1}
+
+Preconditions:
+   |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+int fe_isnegative(const fe f)
+{
+  unsigned char s[32];
+  fe_tobytes(s,f);
+  return s[0] & 1;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_isnonzero.c b/libmariadb/plugins/auth/ref10/fe_isnonzero.c
new file mode 100644
index 00000000..47568001
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_isnonzero.c
@@ -0,0 +1,19 @@
+#include "fe.h"
+#include "crypto_verify_32.h"
+
+/*
+return 1 if f == 0
+return 0 if f != 0
+
+Preconditions:
+   |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+static const unsigned char zero[32];
+
+int fe_isnonzero(const fe f)
+{
+  unsigned char s[32];
+  fe_tobytes(s,f);
+  return crypto_verify_32(s,zero);
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_mul.c b/libmariadb/plugins/auth/ref10/fe_mul.c
new file mode 100644
index 00000000..26ca8b36
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_mul.c
@@ -0,0 +1,253 @@
+#include "fe.h"
+#include "crypto_int64.h"
+
+/*
+h = f * g
+Can overlap h with f or g.
+
+Preconditions:
+   |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+   |g| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+
+Postconditions:
+   |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+*/
+
+/*
+Notes on implementation strategy:
+
+Using schoolbook multiplication.
+Karatsuba would save a little in some cost models.
+
+Most multiplications by 2 and 19 are 32-bit precomputations;
+cheaper than 64-bit postcomputations.
+
+There is one remaining multiplication by 19 in the carry chain;
+one *19 precomputation can be merged into this,
+but the resulting data flow is considerably less clean.
+
+There are 12 carries below.
+10 of them are 2-way parallelizable and vectorizable.
+Can get away with 11 carries, but then data flow is much deeper.
+
+With tighter constraints on inputs can squeeze carries into int32.
+*/
+
+void fe_mul(fe h,const fe f,const fe g)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 g0 = g[0];
+  crypto_int32 g1 = g[1];
+  crypto_int32 g2 = g[2];
+  crypto_int32 g3 = g[3];
+  crypto_int32 g4 = g[4];
+  crypto_int32 g5 = g[5];
+  crypto_int32 g6 = g[6];
+  crypto_int32 g7 = g[7];
+  crypto_int32 g8 = g[8];
+  crypto_int32 g9 = g[9];
+  crypto_int32 g1_19 = 19 * g1; /* 1.959375*2^29 */
+  crypto_int32 g2_19 = 19 * g2; /* 1.959375*2^30; still ok */
+  crypto_int32 g3_19 = 19 * g3;
+  crypto_int32 g4_19 = 19 * g4;
+  crypto_int32 g5_19 = 19 * g5;
+  crypto_int32 g6_19 = 19 * g6;
+  crypto_int32 g7_19 = 19 * g7;
+  crypto_int32 g8_19 = 19 * g8;
+  crypto_int32 g9_19 = 19 * g9;
+  crypto_int32 f1_2 = 2 * f1;
+  crypto_int32 f3_2 = 2 * f3;
+  crypto_int32 f5_2 = 2 * f5;
+  crypto_int32 f7_2 = 2 * f7;
+  crypto_int32 f9_2 = 2 * f9;
+  crypto_int64 f0g0    = f0   * (crypto_int64) g0;
+  crypto_int64 f0g1    = f0   * (crypto_int64) g1;
+  crypto_int64 f0g2    = f0   * (crypto_int64) g2;
+  crypto_int64 f0g3    = f0   * (crypto_int64) g3;
+  crypto_int64 f0g4    = f0   * (crypto_int64) g4;
+  crypto_int64 f0g5    = f0   * (crypto_int64) g5;
+  crypto_int64 f0g6    = f0   * (crypto_int64) g6;
+  crypto_int64 f0g7    = f0   * (crypto_int64) g7;
+  crypto_int64 f0g8    = f0   * (crypto_int64) g8;
+  crypto_int64 f0g9    = f0   * (crypto_int64) g9;
+  crypto_int64 f1g0    = f1   * (crypto_int64) g0;
+  crypto_int64 f1g1_2  = f1_2 * (crypto_int64) g1;
+  crypto_int64 f1g2    = f1   * (crypto_int64) g2;
+  crypto_int64 f1g3_2  = f1_2 * (crypto_int64) g3;
+  crypto_int64 f1g4    = f1   * (crypto_int64) g4;
+  crypto_int64 f1g5_2  = f1_2 * (crypto_int64) g5;
+  crypto_int64 f1g6    = f1   * (crypto_int64) g6;
+  crypto_int64 f1g7_2  = f1_2 * (crypto_int64) g7;
+  crypto_int64 f1g8    = f1   * (crypto_int64) g8;
+  crypto_int64 f1g9_38 = f1_2 * (crypto_int64) g9_19;
+  crypto_int64 f2g0    = f2   * (crypto_int64) g0;
+  crypto_int64 f2g1    = f2   * (crypto_int64) g1;
+  crypto_int64 f2g2    = f2   * (crypto_int64) g2;
+  crypto_int64 f2g3    = f2   * (crypto_int64) g3;
+  crypto_int64 f2g4    = f2   * (crypto_int64) g4;
+  crypto_int64 f2g5    = f2   * (crypto_int64) g5;
+  crypto_int64 f2g6    = f2   * (crypto_int64) g6;
+  crypto_int64 f2g7    = f2   * (crypto_int64) g7;
+  crypto_int64 f2g8_19 = f2   * (crypto_int64) g8_19;
+  crypto_int64 f2g9_19 = f2   * (crypto_int64) g9_19;
+  crypto_int64 f3g0    = f3   * (crypto_int64) g0;
+  crypto_int64 f3g1_2  = f3_2 * (crypto_int64) g1;
+  crypto_int64 f3g2    = f3   * (crypto_int64) g2;
+  crypto_int64 f3g3_2  = f3_2 * (crypto_int64) g3;
+  crypto_int64 f3g4    = f3   * (crypto_int64) g4;
+  crypto_int64 f3g5_2  = f3_2 * (crypto_int64) g5;
+  crypto_int64 f3g6    = f3   * (crypto_int64) g6;
+  crypto_int64 f3g7_38 = f3_2 * (crypto_int64) g7_19;
+  crypto_int64 f3g8_19 = f3   * (crypto_int64) g8_19;
+  crypto_int64 f3g9_38 = f3_2 * (crypto_int64) g9_19;
+  crypto_int64 f4g0    = f4   * (crypto_int64) g0;
+  crypto_int64 f4g1    = f4   * (crypto_int64) g1;
+  crypto_int64 f4g2    = f4   * (crypto_int64) g2;
+  crypto_int64 f4g3    = f4   * (crypto_int64) g3;
+  crypto_int64 f4g4    = f4   * (crypto_int64) g4;
+  crypto_int64 f4g5    = f4   * (crypto_int64) g5;
+  crypto_int64 f4g6_19 = f4   * (crypto_int64) g6_19;
+  crypto_int64 f4g7_19 = f4   * (crypto_int64) g7_19;
+  crypto_int64 f4g8_19 = f4   * (crypto_int64) g8_19;
+  crypto_int64 f4g9_19 = f4   * (crypto_int64) g9_19;
+  crypto_int64 f5g0    = f5   * (crypto_int64) g0;
+  crypto_int64 f5g1_2  = f5_2 * (crypto_int64) g1;
+  crypto_int64 f5g2    = f5   * (crypto_int64) g2;
+  crypto_int64 f5g3_2  = f5_2 * (crypto_int64) g3;
+  crypto_int64 f5g4    = f5   * (crypto_int64) g4;
+  crypto_int64 f5g5_38 = f5_2 * (crypto_int64) g5_19;
+  crypto_int64 f5g6_19 = f5   * (crypto_int64) g6_19;
+  crypto_int64 f5g7_38 = f5_2 * (crypto_int64) g7_19;
+  crypto_int64 f5g8_19 = f5   * (crypto_int64) g8_19;
+  crypto_int64 f5g9_38 = f5_2 * (crypto_int64) g9_19;
+  crypto_int64 f6g0    = f6   * (crypto_int64) g0;
+  crypto_int64 f6g1    = f6   * (crypto_int64) g1;
+  crypto_int64 f6g2    = f6   * (crypto_int64) g2;
+  crypto_int64 f6g3    = f6   * (crypto_int64) g3;
+  crypto_int64 f6g4_19 = f6   * (crypto_int64) g4_19;
+  crypto_int64 f6g5_19 = f6   * (crypto_int64) g5_19;
+  crypto_int64 f6g6_19 = f6   * (crypto_int64) g6_19;
+  crypto_int64 f6g7_19 = f6   * (crypto_int64) g7_19;
+  crypto_int64 f6g8_19 = f6   * (crypto_int64) g8_19;
+  crypto_int64 f6g9_19 = f6   * (crypto_int64) g9_19;
+  crypto_int64 f7g0    = f7   * (crypto_int64) g0;
+  crypto_int64 f7g1_2  = f7_2 * (crypto_int64) g1;
+  crypto_int64 f7g2    = f7   * (crypto_int64) g2;
+  crypto_int64 f7g3_38 = f7_2 * (crypto_int64) g3_19;
+  crypto_int64 f7g4_19 = f7   * (crypto_int64) g4_19;
+  crypto_int64 f7g5_38 = f7_2 * (crypto_int64) g5_19;
+  crypto_int64 f7g6_19 = f7   * (crypto_int64) g6_19;
+  crypto_int64 f7g7_38 = f7_2 * (crypto_int64) g7_19;
+  crypto_int64 f7g8_19 = f7   * (crypto_int64) g8_19;
+  crypto_int64 f7g9_38 = f7_2 * (crypto_int64) g9_19;
+  crypto_int64 f8g0    = f8   * (crypto_int64) g0;
+  crypto_int64 f8g1    = f8   * (crypto_int64) g1;
+  crypto_int64 f8g2_19 = f8   * (crypto_int64) g2_19;
+  crypto_int64 f8g3_19 = f8   * (crypto_int64) g3_19;
+  crypto_int64 f8g4_19 = f8   * (crypto_int64) g4_19;
+  crypto_int64 f8g5_19 = f8   * (crypto_int64) g5_19;
+  crypto_int64 f8g6_19 = f8   * (crypto_int64) g6_19;
+  crypto_int64 f8g7_19 = f8   * (crypto_int64) g7_19;
+  crypto_int64 f8g8_19 = f8   * (crypto_int64) g8_19;
+  crypto_int64 f8g9_19 = f8   * (crypto_int64) g9_19;
+  crypto_int64 f9g0    = f9   * (crypto_int64) g0;
+  crypto_int64 f9g1_38 = f9_2 * (crypto_int64) g1_19;
+  crypto_int64 f9g2_19 = f9   * (crypto_int64) g2_19;
+  crypto_int64 f9g3_38 = f9_2 * (crypto_int64) g3_19;
+  crypto_int64 f9g4_19 = f9   * (crypto_int64) g4_19;
+  crypto_int64 f9g5_38 = f9_2 * (crypto_int64) g5_19;
+  crypto_int64 f9g6_19 = f9   * (crypto_int64) g6_19;
+  crypto_int64 f9g7_38 = f9_2 * (crypto_int64) g7_19;
+  crypto_int64 f9g8_19 = f9   * (crypto_int64) g8_19;
+  crypto_int64 f9g9_38 = f9_2 * (crypto_int64) g9_19;
+  crypto_int64 h0 = f0g0+f1g9_38+f2g8_19+f3g7_38+f4g6_19+f5g5_38+f6g4_19+f7g3_38+f8g2_19+f9g1_38;
+  crypto_int64 h1 = f0g1+f1g0   +f2g9_19+f3g8_19+f4g7_19+f5g6_19+f6g5_19+f7g4_19+f8g3_19+f9g2_19;
+  crypto_int64 h2 = f0g2+f1g1_2 +f2g0   +f3g9_38+f4g8_19+f5g7_38+f6g6_19+f7g5_38+f8g4_19+f9g3_38;
+  crypto_int64 h3 = f0g3+f1g2   +f2g1   +f3g0   +f4g9_19+f5g8_19+f6g7_19+f7g6_19+f8g5_19+f9g4_19;
+  crypto_int64 h4 = f0g4+f1g3_2 +f2g2   +f3g1_2 +f4g0   +f5g9_38+f6g8_19+f7g7_38+f8g6_19+f9g5_38;
+  crypto_int64 h5 = f0g5+f1g4   +f2g3   +f3g2   +f4g1   +f5g0   +f6g9_19+f7g8_19+f8g7_19+f9g6_19;
+  crypto_int64 h6 = f0g6+f1g5_2 +f2g4   +f3g3_2 +f4g2   +f5g1_2 +f6g0   +f7g9_38+f8g8_19+f9g7_38;
+  crypto_int64 h7 = f0g7+f1g6   +f2g5   +f3g4   +f4g3   +f5g2   +f6g1   +f7g0   +f8g9_19+f9g8_19;
+  crypto_int64 h8 = f0g8+f1g7_2 +f2g6   +f3g5_2 +f4g4   +f5g3_2 +f6g2   +f7g1_2 +f8g0   +f9g9_38;
+  crypto_int64 h9 = f0g9+f1g8   +f2g7   +f3g6   +f4g5   +f5g4   +f6g3   +f7g2   +f8g1   +f9g0   ;
+  crypto_int64 carry0;
+  crypto_int64 carry1;
+  crypto_int64 carry2;
+  crypto_int64 carry3;
+  crypto_int64 carry4;
+  crypto_int64 carry5;
+  crypto_int64 carry6;
+  crypto_int64 carry7;
+  crypto_int64 carry8;
+  crypto_int64 carry9;
+
+  /*
+  |h0| <= (1.65*1.65*2^52*(1+19+19+19+19)+1.65*1.65*2^50*(38+38+38+38+38))
+    i.e. |h0| <= 1.4*2^60; narrower ranges for h2, h4, h6, h8
+  |h1| <= (1.65*1.65*2^51*(1+1+19+19+19+19+19+19+19+19))
+    i.e. |h1| <= 1.7*2^59; narrower ranges for h3, h5, h7, h9
+  */
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+  /* |h0| <= 2^25 */
+  /* |h4| <= 2^25 */
+  /* |h1| <= 1.71*2^59 */
+  /* |h5| <= 1.71*2^59 */
+
+  carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+  carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+  /* |h1| <= 2^24; from now on fits into int32 */
+  /* |h5| <= 2^24; from now on fits into int32 */
+  /* |h2| <= 1.41*2^60 */
+  /* |h6| <= 1.41*2^60 */
+
+  carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+  carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+  /* |h2| <= 2^25; from now on fits into int32 unchanged */
+  /* |h6| <= 2^25; from now on fits into int32 unchanged */
+  /* |h3| <= 1.71*2^59 */
+  /* |h7| <= 1.71*2^59 */
+
+  carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+  carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+  /* |h3| <= 2^24; from now on fits into int32 unchanged */
+  /* |h7| <= 2^24; from now on fits into int32 unchanged */
+  /* |h4| <= 1.72*2^34 */
+  /* |h8| <= 1.41*2^60 */
+
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+  carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+  /* |h4| <= 2^25; from now on fits into int32 unchanged */
+  /* |h8| <= 2^25; from now on fits into int32 unchanged */
+  /* |h5| <= 1.01*2^24 */
+  /* |h9| <= 1.71*2^59 */
+
+  carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+  /* |h9| <= 2^24; from now on fits into int32 unchanged */
+  /* |h0| <= 1.1*2^39 */
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+  /* |h0| <= 2^25; from now on fits into int32 unchanged */
+  /* |h1| <= 1.01*2^24 */
+
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_neg.c b/libmariadb/plugins/auth/ref10/fe_neg.c
new file mode 100644
index 00000000..2078ce52
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_neg.c
@@ -0,0 +1,45 @@
+#include "fe.h"
+
+/*
+h = -f
+
+Preconditions:
+   |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+
+Postconditions:
+   |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+*/
+
+void fe_neg(fe h,const fe f)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 h0 = -f0;
+  crypto_int32 h1 = -f1;
+  crypto_int32 h2 = -f2;
+  crypto_int32 h3 = -f3;
+  crypto_int32 h4 = -f4;
+  crypto_int32 h5 = -f5;
+  crypto_int32 h6 = -f6;
+  crypto_int32 h7 = -f7;
+  crypto_int32 h8 = -f8;
+  crypto_int32 h9 = -f9;
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_pow22523.c b/libmariadb/plugins/auth/ref10/fe_pow22523.c
new file mode 100644
index 00000000..56675a59
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_pow22523.c
@@ -0,0 +1,13 @@
+#include "fe.h"
+
+void fe_pow22523(fe out,const fe z)
+{
+  fe t0;
+  fe t1;
+  fe t2;
+  int i;
+
+#include "pow22523.h"
+
+  return;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_sq.c b/libmariadb/plugins/auth/ref10/fe_sq.c
new file mode 100644
index 00000000..8dd11984
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_sq.c
@@ -0,0 +1,149 @@
+#include "fe.h"
+#include "crypto_int64.h"
+
+/*
+h = f * f
+Can overlap h with f.
+
+Preconditions:
+   |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+
+Postconditions:
+   |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+*/
+
+/*
+See fe_mul.c for discussion of implementation strategy.
+*/
+
+void fe_sq(fe h,const fe f)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 f0_2 = 2 * f0;
+  crypto_int32 f1_2 = 2 * f1;
+  crypto_int32 f2_2 = 2 * f2;
+  crypto_int32 f3_2 = 2 * f3;
+  crypto_int32 f4_2 = 2 * f4;
+  crypto_int32 f5_2 = 2 * f5;
+  crypto_int32 f6_2 = 2 * f6;
+  crypto_int32 f7_2 = 2 * f7;
+  crypto_int32 f5_38 = 38 * f5; /* 1.959375*2^30 */
+  crypto_int32 f6_19 = 19 * f6; /* 1.959375*2^30 */
+  crypto_int32 f7_38 = 38 * f7; /* 1.959375*2^30 */
+  crypto_int32 f8_19 = 19 * f8; /* 1.959375*2^30 */
+  crypto_int32 f9_38 = 38 * f9; /* 1.959375*2^30 */
+  crypto_int64 f0f0    = f0   * (crypto_int64) f0;
+  crypto_int64 f0f1_2  = f0_2 * (crypto_int64) f1;
+  crypto_int64 f0f2_2  = f0_2 * (crypto_int64) f2;
+  crypto_int64 f0f3_2  = f0_2 * (crypto_int64) f3;
+  crypto_int64 f0f4_2  = f0_2 * (crypto_int64) f4;
+  crypto_int64 f0f5_2  = f0_2 * (crypto_int64) f5;
+  crypto_int64 f0f6_2  = f0_2 * (crypto_int64) f6;
+  crypto_int64 f0f7_2  = f0_2 * (crypto_int64) f7;
+  crypto_int64 f0f8_2  = f0_2 * (crypto_int64) f8;
+  crypto_int64 f0f9_2  = f0_2 * (crypto_int64) f9;
+  crypto_int64 f1f1_2  = f1_2 * (crypto_int64) f1;
+  crypto_int64 f1f2_2  = f1_2 * (crypto_int64) f2;
+  crypto_int64 f1f3_4  = f1_2 * (crypto_int64) f3_2;
+  crypto_int64 f1f4_2  = f1_2 * (crypto_int64) f4;
+  crypto_int64 f1f5_4  = f1_2 * (crypto_int64) f5_2;
+  crypto_int64 f1f6_2  = f1_2 * (crypto_int64) f6;
+  crypto_int64 f1f7_4  = f1_2 * (crypto_int64) f7_2;
+  crypto_int64 f1f8_2  = f1_2 * (crypto_int64) f8;
+  crypto_int64 f1f9_76 = f1_2 * (crypto_int64) f9_38;
+  crypto_int64 f2f2    = f2   * (crypto_int64) f2;
+  crypto_int64 f2f3_2  = f2_2 * (crypto_int64) f3;
+  crypto_int64 f2f4_2  = f2_2 * (crypto_int64) f4;
+  crypto_int64 f2f5_2  = f2_2 * (crypto_int64) f5;
+  crypto_int64 f2f6_2  = f2_2 * (crypto_int64) f6;
+  crypto_int64 f2f7_2  = f2_2 * (crypto_int64) f7;
+  crypto_int64 f2f8_38 = f2_2 * (crypto_int64) f8_19;
+  crypto_int64 f2f9_38 = f2   * (crypto_int64) f9_38;
+  crypto_int64 f3f3_2  = f3_2 * (crypto_int64) f3;
+  crypto_int64 f3f4_2  = f3_2 * (crypto_int64) f4;
+  crypto_int64 f3f5_4  = f3_2 * (crypto_int64) f5_2;
+  crypto_int64 f3f6_2  = f3_2 * (crypto_int64) f6;
+  crypto_int64 f3f7_76 = f3_2 * (crypto_int64) f7_38;
+  crypto_int64 f3f8_38 = f3_2 * (crypto_int64) f8_19;
+  crypto_int64 f3f9_76 = f3_2 * (crypto_int64) f9_38;
+  crypto_int64 f4f4    = f4   * (crypto_int64) f4;
+  crypto_int64 f4f5_2  = f4_2 * (crypto_int64) f5;
+  crypto_int64 f4f6_38 = f4_2 * (crypto_int64) f6_19;
+  crypto_int64 f4f7_38 = f4   * (crypto_int64) f7_38;
+  crypto_int64 f4f8_38 = f4_2 * (crypto_int64) f8_19;
+  crypto_int64 f4f9_38 = f4   * (crypto_int64) f9_38;
+  crypto_int64 f5f5_38 = f5   * (crypto_int64) f5_38;
+  crypto_int64 f5f6_38 = f5_2 * (crypto_int64) f6_19;
+  crypto_int64 f5f7_76 = f5_2 * (crypto_int64) f7_38;
+  crypto_int64 f5f8_38 = f5_2 * (crypto_int64) f8_19;
+  crypto_int64 f5f9_76 = f5_2 * (crypto_int64) f9_38;
+  crypto_int64 f6f6_19 = f6   * (crypto_int64) f6_19;
+  crypto_int64 f6f7_38 = f6   * (crypto_int64) f7_38;
+  crypto_int64 f6f8_38 = f6_2 * (crypto_int64) f8_19;
+  crypto_int64 f6f9_38 = f6   * (crypto_int64) f9_38;
+  crypto_int64 f7f7_38 = f7   * (crypto_int64) f7_38;
+  crypto_int64 f7f8_38 = f7_2 * (crypto_int64) f8_19;
+  crypto_int64 f7f9_76 = f7_2 * (crypto_int64) f9_38;
+  crypto_int64 f8f8_19 = f8   * (crypto_int64) f8_19;
+  crypto_int64 f8f9_38 = f8   * (crypto_int64) f9_38;
+  crypto_int64 f9f9_38 = f9   * (crypto_int64) f9_38;
+  crypto_int64 h0 = f0f0  +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
+  crypto_int64 h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
+  crypto_int64 h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
+  crypto_int64 h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
+  crypto_int64 h4 = f0f4_2+f1f3_4 +f2f2   +f5f9_76+f6f8_38+f7f7_38;
+  crypto_int64 h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
+  crypto_int64 h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
+  crypto_int64 h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
+  crypto_int64 h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4   +f9f9_38;
+  crypto_int64 h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
+  crypto_int64 carry0;
+  crypto_int64 carry1;
+  crypto_int64 carry2;
+  crypto_int64 carry3;
+  crypto_int64 carry4;
+  crypto_int64 carry5;
+  crypto_int64 carry6;
+  crypto_int64 carry7;
+  crypto_int64 carry8;
+  crypto_int64 carry9;
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+
+  carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+  carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+
+  carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+  carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+
+  carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+  carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+  carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+
+  carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_sq2.c b/libmariadb/plugins/auth/ref10/fe_sq2.c
new file mode 100644
index 00000000..026ed3aa
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_sq2.c
@@ -0,0 +1,160 @@
+#include "fe.h"
+#include "crypto_int64.h"
+
+/*
+h = 2 * f * f
+Can overlap h with f.
+
+Preconditions:
+   |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+
+Postconditions:
+   |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+*/
+
+/*
+See fe_mul.c for discussion of implementation strategy.
+*/
+
+void fe_sq2(fe h,const fe f)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 f0_2 = 2 * f0;
+  crypto_int32 f1_2 = 2 * f1;
+  crypto_int32 f2_2 = 2 * f2;
+  crypto_int32 f3_2 = 2 * f3;
+  crypto_int32 f4_2 = 2 * f4;
+  crypto_int32 f5_2 = 2 * f5;
+  crypto_int32 f6_2 = 2 * f6;
+  crypto_int32 f7_2 = 2 * f7;
+  crypto_int32 f5_38 = 38 * f5; /* 1.959375*2^30 */
+  crypto_int32 f6_19 = 19 * f6; /* 1.959375*2^30 */
+  crypto_int32 f7_38 = 38 * f7; /* 1.959375*2^30 */
+  crypto_int32 f8_19 = 19 * f8; /* 1.959375*2^30 */
+  crypto_int32 f9_38 = 38 * f9; /* 1.959375*2^30 */
+  crypto_int64 f0f0    = f0   * (crypto_int64) f0;
+  crypto_int64 f0f1_2  = f0_2 * (crypto_int64) f1;
+  crypto_int64 f0f2_2  = f0_2 * (crypto_int64) f2;
+  crypto_int64 f0f3_2  = f0_2 * (crypto_int64) f3;
+  crypto_int64 f0f4_2  = f0_2 * (crypto_int64) f4;
+  crypto_int64 f0f5_2  = f0_2 * (crypto_int64) f5;
+  crypto_int64 f0f6_2  = f0_2 * (crypto_int64) f6;
+  crypto_int64 f0f7_2  = f0_2 * (crypto_int64) f7;
+  crypto_int64 f0f8_2  = f0_2 * (crypto_int64) f8;
+  crypto_int64 f0f9_2  = f0_2 * (crypto_int64) f9;
+  crypto_int64 f1f1_2  = f1_2 * (crypto_int64) f1;
+  crypto_int64 f1f2_2  = f1_2 * (crypto_int64) f2;
+  crypto_int64 f1f3_4  = f1_2 * (crypto_int64) f3_2;
+  crypto_int64 f1f4_2  = f1_2 * (crypto_int64) f4;
+  crypto_int64 f1f5_4  = f1_2 * (crypto_int64) f5_2;
+  crypto_int64 f1f6_2  = f1_2 * (crypto_int64) f6;
+  crypto_int64 f1f7_4  = f1_2 * (crypto_int64) f7_2;
+  crypto_int64 f1f8_2  = f1_2 * (crypto_int64) f8;
+  crypto_int64 f1f9_76 = f1_2 * (crypto_int64) f9_38;
+  crypto_int64 f2f2    = f2   * (crypto_int64) f2;
+  crypto_int64 f2f3_2  = f2_2 * (crypto_int64) f3;
+  crypto_int64 f2f4_2  = f2_2 * (crypto_int64) f4;
+  crypto_int64 f2f5_2  = f2_2 * (crypto_int64) f5;
+  crypto_int64 f2f6_2  = f2_2 * (crypto_int64) f6;
+  crypto_int64 f2f7_2  = f2_2 * (crypto_int64) f7;
+  crypto_int64 f2f8_38 = f2_2 * (crypto_int64) f8_19;
+  crypto_int64 f2f9_38 = f2   * (crypto_int64) f9_38;
+  crypto_int64 f3f3_2  = f3_2 * (crypto_int64) f3;
+  crypto_int64 f3f4_2  = f3_2 * (crypto_int64) f4;
+  crypto_int64 f3f5_4  = f3_2 * (crypto_int64) f5_2;
+  crypto_int64 f3f6_2  = f3_2 * (crypto_int64) f6;
+  crypto_int64 f3f7_76 = f3_2 * (crypto_int64) f7_38;
+  crypto_int64 f3f8_38 = f3_2 * (crypto_int64) f8_19;
+  crypto_int64 f3f9_76 = f3_2 * (crypto_int64) f9_38;
+  crypto_int64 f4f4    = f4   * (crypto_int64) f4;
+  crypto_int64 f4f5_2  = f4_2 * (crypto_int64) f5;
+  crypto_int64 f4f6_38 = f4_2 * (crypto_int64) f6_19;
+  crypto_int64 f4f7_38 = f4   * (crypto_int64) f7_38;
+  crypto_int64 f4f8_38 = f4_2 * (crypto_int64) f8_19;
+  crypto_int64 f4f9_38 = f4   * (crypto_int64) f9_38;
+  crypto_int64 f5f5_38 = f5   * (crypto_int64) f5_38;
+  crypto_int64 f5f6_38 = f5_2 * (crypto_int64) f6_19;
+  crypto_int64 f5f7_76 = f5_2 * (crypto_int64) f7_38;
+  crypto_int64 f5f8_38 = f5_2 * (crypto_int64) f8_19;
+  crypto_int64 f5f9_76 = f5_2 * (crypto_int64) f9_38;
+  crypto_int64 f6f6_19 = f6   * (crypto_int64) f6_19;
+  crypto_int64 f6f7_38 = f6   * (crypto_int64) f7_38;
+  crypto_int64 f6f8_38 = f6_2 * (crypto_int64) f8_19;
+  crypto_int64 f6f9_38 = f6   * (crypto_int64) f9_38;
+  crypto_int64 f7f7_38 = f7   * (crypto_int64) f7_38;
+  crypto_int64 f7f8_38 = f7_2 * (crypto_int64) f8_19;
+  crypto_int64 f7f9_76 = f7_2 * (crypto_int64) f9_38;
+  crypto_int64 f8f8_19 = f8   * (crypto_int64) f8_19;
+  crypto_int64 f8f9_38 = f8   * (crypto_int64) f9_38;
+  crypto_int64 f9f9_38 = f9   * (crypto_int64) f9_38;
+  crypto_int64 h0 = f0f0  +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
+  crypto_int64 h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
+  crypto_int64 h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
+  crypto_int64 h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
+  crypto_int64 h4 = f0f4_2+f1f3_4 +f2f2   +f5f9_76+f6f8_38+f7f7_38;
+  crypto_int64 h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
+  crypto_int64 h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
+  crypto_int64 h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
+  crypto_int64 h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4   +f9f9_38;
+  crypto_int64 h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
+  crypto_int64 carry0;
+  crypto_int64 carry1;
+  crypto_int64 carry2;
+  crypto_int64 carry3;
+  crypto_int64 carry4;
+  crypto_int64 carry5;
+  crypto_int64 carry6;
+  crypto_int64 carry7;
+  crypto_int64 carry8;
+  crypto_int64 carry9;
+
+  h0 += h0;
+  h1 += h1;
+  h2 += h2;
+  h3 += h3;
+  h4 += h4;
+  h5 += h5;
+  h6 += h6;
+  h7 += h7;
+  h8 += h8;
+  h9 += h9;
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+
+  carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+  carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+
+  carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+  carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+
+  carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+  carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+
+  carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+  carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+
+  carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+
+  carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_sub.c b/libmariadb/plugins/auth/ref10/fe_sub.c
new file mode 100644
index 00000000..6e26b7df
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_sub.c
@@ -0,0 +1,57 @@
+#include "fe.h"
+
+/*
+h = f - g
+Can overlap h with f or g.
+
+Preconditions:
+   |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+   |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+
+Postconditions:
+   |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+void fe_sub(fe h,const fe f,const fe g)
+{
+  crypto_int32 f0 = f[0];
+  crypto_int32 f1 = f[1];
+  crypto_int32 f2 = f[2];
+  crypto_int32 f3 = f[3];
+  crypto_int32 f4 = f[4];
+  crypto_int32 f5 = f[5];
+  crypto_int32 f6 = f[6];
+  crypto_int32 f7 = f[7];
+  crypto_int32 f8 = f[8];
+  crypto_int32 f9 = f[9];
+  crypto_int32 g0 = g[0];
+  crypto_int32 g1 = g[1];
+  crypto_int32 g2 = g[2];
+  crypto_int32 g3 = g[3];
+  crypto_int32 g4 = g[4];
+  crypto_int32 g5 = g[5];
+  crypto_int32 g6 = g[6];
+  crypto_int32 g7 = g[7];
+  crypto_int32 g8 = g[8];
+  crypto_int32 g9 = g[9];
+  crypto_int32 h0 = f0 - g0;
+  crypto_int32 h1 = f1 - g1;
+  crypto_int32 h2 = f2 - g2;
+  crypto_int32 h3 = f3 - g3;
+  crypto_int32 h4 = f4 - g4;
+  crypto_int32 h5 = f5 - g5;
+  crypto_int32 h6 = f6 - g6;
+  crypto_int32 h7 = f7 - g7;
+  crypto_int32 h8 = f8 - g8;
+  crypto_int32 h9 = f9 - g9;
+  h[0] = h0;
+  h[1] = h1;
+  h[2] = h2;
+  h[3] = h3;
+  h[4] = h4;
+  h[5] = h5;
+  h[6] = h6;
+  h[7] = h7;
+  h[8] = h8;
+  h[9] = h9;
+}
diff --git a/libmariadb/plugins/auth/ref10/fe_tobytes.c b/libmariadb/plugins/auth/ref10/fe_tobytes.c
new file mode 100644
index 00000000..0a63baf9
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/fe_tobytes.c
@@ -0,0 +1,119 @@
+#include "fe.h"
+
+/*
+Preconditions:
+  |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+
+Write p=2^255-19; q=floor(h/p).
+Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
+
+Proof:
+  Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
+  Also have |h-2^230 h9|<2^231 so |19 2^(-255)(h-2^230 h9)|<1/4.
+
+  Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
+  Then 0<y<1.
+
+  Write r=h-pq.
+  Have 0<=r<=p-1=2^255-20.
+  Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
+
+  Write x=r+19(2^-255)r+y.
+  Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
+
+  Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
+  so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
+*/
+
+void fe_tobytes(unsigned char *s,const fe h)
+{
+  crypto_int32 h0 = h[0];
+  crypto_int32 h1 = h[1];
+  crypto_int32 h2 = h[2];
+  crypto_int32 h3 = h[3];
+  crypto_int32 h4 = h[4];
+  crypto_int32 h5 = h[5];
+  crypto_int32 h6 = h[6];
+  crypto_int32 h7 = h[7];
+  crypto_int32 h8 = h[8];
+  crypto_int32 h9 = h[9];
+  crypto_int32 q;
+  crypto_int32 carry0;
+  crypto_int32 carry1;
+  crypto_int32 carry2;
+  crypto_int32 carry3;
+  crypto_int32 carry4;
+  crypto_int32 carry5;
+  crypto_int32 carry6;
+  crypto_int32 carry7;
+  crypto_int32 carry8;
+  crypto_int32 carry9;
+
+  q = (19 * h9 + (((crypto_int32) 1) << 24)) >> 25;
+  q = (h0 + q) >> 26;
+  q = (h1 + q) >> 25;
+  q = (h2 + q) >> 26;
+  q = (h3 + q) >> 25;
+  q = (h4 + q) >> 26;
+  q = (h5 + q) >> 25;
+  q = (h6 + q) >> 26;
+  q = (h7 + q) >> 25;
+  q = (h8 + q) >> 26;
+  q = (h9 + q) >> 25;
+
+  /* Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. */
+  h0 += 19 * q;
+  /* Goal: Output h-2^255 q, which is between 0 and 2^255-20. */
+
+  carry0 = h0 >> 26; h1 += carry0; h0 -= carry0 << 26;
+  carry1 = h1 >> 25; h2 += carry1; h1 -= carry1 << 25;
+  carry2 = h2 >> 26; h3 += carry2; h2 -= carry2 << 26;
+  carry3 = h3 >> 25; h4 += carry3; h3 -= carry3 << 25;
+  carry4 = h4 >> 26; h5 += carry4; h4 -= carry4 << 26;
+  carry5 = h5 >> 25; h6 += carry5; h5 -= carry5 << 25;
+  carry6 = h6 >> 26; h7 += carry6; h6 -= carry6 << 26;
+  carry7 = h7 >> 25; h8 += carry7; h7 -= carry7 << 25;
+  carry8 = h8 >> 26; h9 += carry8; h8 -= carry8 << 26;
+  carry9 = h9 >> 25;               h9 -= carry9 << 25;
+                  /* h10 = carry9 */
+
+  /*
+  Goal: Output h0+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
+  Have h0+...+2^230 h9 between 0 and 2^255-1;
+  evidently 2^255 h10-2^255 q = 0.
+  Goal: Output h0+...+2^230 h9.
+  */
+
+  s[0] = h0 >> 0;
+  s[1] = h0 >> 8;
+  s[2] = h0 >> 16;
+  s[3] = (h0 >> 24) | (h1 << 2);
+  s[4] = h1 >> 6;
+  s[5] = h1 >> 14;
+  s[6] = (h1 >> 22) | (h2 << 3);
+  s[7] = h2 >> 5;
+  s[8] = h2 >> 13;
+  s[9] = (h2 >> 21) | (h3 << 5);
+  s[10] = h3 >> 3;
+  s[11] = h3 >> 11;
+  s[12] = (h3 >> 19) | (h4 << 6);
+  s[13] = h4 >> 2;
+  s[14] = h4 >> 10;
+  s[15] = h4 >> 18;
+  s[16] = h5 >> 0;
+  s[17] = h5 >> 8;
+  s[18] = h5 >> 16;
+  s[19] = (h5 >> 24) | (h6 << 1);
+  s[20] = h6 >> 7;
+  s[21] = h6 >> 15;
+  s[22] = (h6 >> 23) | (h7 << 3);
+  s[23] = h7 >> 5;
+  s[24] = h7 >> 13;
+  s[25] = (h7 >> 21) | (h8 << 4);
+  s[26] = h8 >> 4;
+  s[27] = h8 >> 12;
+  s[28] = (h8 >> 20) | (h9 << 6);
+  s[29] = h9 >> 2;
+  s[30] = h9 >> 10;
+  s[31] = h9 >> 18;
+}
diff --git a/libmariadb/plugins/auth/ref10/ge.h b/libmariadb/plugins/auth/ref10/ge.h
new file mode 100644
index 00000000..55e95f95
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge.h
@@ -0,0 +1,95 @@
+#ifndef GE_H
+#define GE_H
+
+/*
+ge means group element.
+
+Here the group is the set of pairs (x,y) of field elements (see fe.h)
+satisfying -x^2 + y^2 = 1 + d x^2y^2
+where d = -121665/121666.
+
+Representations:
+  ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z
+  ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
+  ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
+  ge_precomp (Duif): (y+x,y-x,2dxy)
+*/
+
+#include "fe.h"
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+} ge_p2;
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+  fe T;
+} ge_p3;
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+  fe T;
+} ge_p1p1;
+
+typedef struct {
+  fe yplusx;
+  fe yminusx;
+  fe xy2d;
+} ge_precomp;
+
+typedef struct {
+  fe YplusX;
+  fe YminusX;
+  fe Z;
+  fe T2d;
+} ge_cached;
+
+#define ge_frombytes_negate_vartime crypto_sign_ed25519_ref10_ge_frombytes_negate_vartime
+#define ge_tobytes crypto_sign_ed25519_ref10_ge_tobytes
+#define ge_p3_tobytes crypto_sign_ed25519_ref10_ge_p3_tobytes
+
+#define ge_p2_0 crypto_sign_ed25519_ref10_ge_p2_0
+#define ge_p3_0 crypto_sign_ed25519_ref10_ge_p3_0
+#define ge_precomp_0 crypto_sign_ed25519_ref10_ge_precomp_0
+#define ge_p3_to_p2 crypto_sign_ed25519_ref10_ge_p3_to_p2
+#define ge_p3_to_cached crypto_sign_ed25519_ref10_ge_p3_to_cached
+#define ge_p1p1_to_p2 crypto_sign_ed25519_ref10_ge_p1p1_to_p2
+#define ge_p1p1_to_p3 crypto_sign_ed25519_ref10_ge_p1p1_to_p3
+#define ge_p2_dbl crypto_sign_ed25519_ref10_ge_p2_dbl
+#define ge_p3_dbl crypto_sign_ed25519_ref10_ge_p3_dbl
+
+#define ge_madd crypto_sign_ed25519_ref10_ge_madd
+#define ge_msub crypto_sign_ed25519_ref10_ge_msub
+#define ge_add crypto_sign_ed25519_ref10_ge_add
+#define ge_sub crypto_sign_ed25519_ref10_ge_sub
+#define ge_scalarmult_base crypto_sign_ed25519_ref10_ge_scalarmult_base
+#define ge_double_scalarmult_vartime crypto_sign_ed25519_ref10_ge_double_scalarmult_vartime
+
+extern void ge_tobytes(unsigned char *,const ge_p2 *);
+extern void ge_p3_tobytes(unsigned char *,const ge_p3 *);
+extern int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *);
+
+extern void ge_p2_0(ge_p2 *);
+extern void ge_p3_0(ge_p3 *);
+extern void ge_precomp_0(ge_precomp *);
+extern void ge_p3_to_p2(ge_p2 *,const ge_p3 *);
+extern void ge_p3_to_cached(ge_cached *,const ge_p3 *);
+extern void ge_p1p1_to_p2(ge_p2 *,const ge_p1p1 *);
+extern void ge_p1p1_to_p3(ge_p3 *,const ge_p1p1 *);
+extern void ge_p2_dbl(ge_p1p1 *,const ge_p2 *);
+extern void ge_p3_dbl(ge_p1p1 *,const ge_p3 *);
+
+extern void ge_madd(ge_p1p1 *,const ge_p3 *,const ge_precomp *);
+extern void ge_msub(ge_p1p1 *,const ge_p3 *,const ge_precomp *);
+extern void ge_add(ge_p1p1 *,const ge_p3 *,const ge_cached *);
+extern void ge_sub(ge_p1p1 *,const ge_p3 *,const ge_cached *);
+extern void ge_scalarmult_base(ge_p3 *,const unsigned char *);
+extern void ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *,const ge_p3 *,const unsigned char *);
+
+#endif
diff --git a/libmariadb/plugins/auth/ref10/ge_add.c b/libmariadb/plugins/auth/ref10/ge_add.c
new file mode 100644
index 00000000..da7ff5d2
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_add.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p + q
+*/
+
+void ge_add(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q)
+{
+  fe t0;
+#include "ge_add.h"
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_add.h b/libmariadb/plugins/auth/ref10/ge_add.h
new file mode 100644
index 00000000..7481f8ff
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_add.h
@@ -0,0 +1,97 @@
+
+/* qhasm: enter ge_add */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe Z2 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ZZ */
+
+/* qhasm: fe YpX2 */
+
+/* qhasm: fe YmX2 */
+
+/* qhasm: fe T2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*YpX2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<YpX2=fe#15); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<YpX2=q->YplusX); */
+fe_mul(r->Z,r->X,q->YplusX);
+
+/* qhasm: B = YmX1*YmX2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<YmX2=fe#16); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<YmX2=q->YminusX); */
+fe_mul(r->Y,r->Y,q->YminusX);
+
+/* qhasm: C = T2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<T2d2=fe#18,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<T2d2=q->T2d,<T1=p->T); */
+fe_mul(r->T,q->T2d,p->T);
+
+/* qhasm: ZZ = Z1*Z2 */
+/* asm 1: fe_mul(>ZZ=fe#1,<Z1=fe#13,<Z2=fe#17); */
+/* asm 2: fe_mul(>ZZ=r->X,<Z1=p->Z,<Z2=q->Z); */
+fe_mul(r->X,p->Z,q->Z);
+
+/* qhasm: D = 2*ZZ */
+/* asm 1: fe_add(>D=fe#5,<ZZ=fe#1,<ZZ=fe#1); */
+/* asm 2: fe_add(>D=t0,<ZZ=r->X,<ZZ=r->X); */
+fe_add(t0,r->X,r->X);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D+C */
+/* asm 1: fe_add(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_add(r->Z,t0,r->T);
+
+/* qhasm: T3 = D-C */
+/* asm 1: fe_sub(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>T3=r->T,<D=t0,<C=r->T); */
+fe_sub(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/ge_double_scalarmult.c b/libmariadb/plugins/auth/ref10/ge_double_scalarmult.c
new file mode 100644
index 00000000..f8bf4bf7
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_double_scalarmult.c
@@ -0,0 +1,96 @@
+#include "ge.h"
+
+static void slide(signed char *r,const unsigned char *a)
+{
+  int i;
+  int b;
+  int k;
+
+  for (i = 0;i < 256;++i)
+    r[i] = 1 & (a[i >> 3] >> (i & 7));
+
+  for (i = 0;i < 256;++i)
+    if (r[i]) {
+      for (b = 1;b <= 6 && i + b < 256;++b) {
+        if (r[i + b]) {
+          if (r[i] + (r[i + b] << b) <= 15) {
+            r[i] += r[i + b] << b; r[i + b] = 0;
+          } else if (r[i] - (r[i + b] << b) >= -15) {
+            r[i] -= r[i + b] << b;
+            for (k = i + b;k < 256;++k) {
+              if (!r[k]) {
+                r[k] = 1;
+                break;
+              }
+              r[k] = 0;
+            }
+          } else
+            break;
+        }
+      }
+    }
+
+}
+
+static ge_precomp Bi[8] = {
+#include "base2.h"
+} ;
+
+/*
+r = a * A + b * B
+where a = a[0]+256*a[1]+...+256^31 a[31].
+and b = b[0]+256*b[1]+...+256^31 b[31].
+B is the Ed25519 base point (x,4/5) with x positive.
+*/
+
+void ge_double_scalarmult_vartime(ge_p2 *r,const unsigned char *a,const ge_p3 *A,const unsigned char *b)
+{
+  signed char aslide[256];
+  signed char bslide[256];
+  ge_cached Ai[8]; /* A,3A,5A,7A,9A,11A,13A,15A */
+  ge_p1p1 t;
+  ge_p3 u;
+  ge_p3 A2;
+  int i;
+
+  slide(aslide,a);
+  slide(bslide,b);
+
+  ge_p3_to_cached(&Ai[0],A);
+  ge_p3_dbl(&t,A); ge_p1p1_to_p3(&A2,&t);
+  ge_add(&t,&A2,&Ai[0]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[1],&u);
+  ge_add(&t,&A2,&Ai[1]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[2],&u);
+  ge_add(&t,&A2,&Ai[2]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[3],&u);
+  ge_add(&t,&A2,&Ai[3]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[4],&u);
+  ge_add(&t,&A2,&Ai[4]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[5],&u);
+  ge_add(&t,&A2,&Ai[5]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[6],&u);
+  ge_add(&t,&A2,&Ai[6]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[7],&u);
+
+  ge_p2_0(r);
+
+  for (i = 255;i >= 0;--i) {
+    if (aslide[i] || bslide[i]) break;
+  }
+
+  for (;i >= 0;--i) {
+    ge_p2_dbl(&t,r);
+
+    if (aslide[i] > 0) {
+      ge_p1p1_to_p3(&u,&t);
+      ge_add(&t,&u,&Ai[aslide[i]/2]);
+    } else if (aslide[i] < 0) {
+      ge_p1p1_to_p3(&u,&t);
+      ge_sub(&t,&u,&Ai[(-aslide[i])/2]);
+    }
+
+    if (bslide[i] > 0) {
+      ge_p1p1_to_p3(&u,&t);
+      ge_madd(&t,&u,&Bi[bslide[i]/2]);
+    } else if (bslide[i] < 0) {
+      ge_p1p1_to_p3(&u,&t);
+      ge_msub(&t,&u,&Bi[(-bslide[i])/2]);
+    }
+
+    ge_p1p1_to_p2(r,&t);
+  }
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_frombytes.c b/libmariadb/plugins/auth/ref10/ge_frombytes.c
new file mode 100644
index 00000000..1a059ee9
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_frombytes.c
@@ -0,0 +1,50 @@
+#include "ge.h"
+
+static const fe d = {
+#include "d.h"
+} ;
+
+static const fe sqrtm1 = {
+#include "sqrtm1.h"
+} ;
+
+int ge_frombytes_negate_vartime(ge_p3 *h,const unsigned char *s)
+{
+  fe u;
+  fe v;
+  fe v3;
+  fe vxx;
+  fe check;
+
+  fe_frombytes(h->Y,s);
+  fe_1(h->Z);
+  fe_sq(u,h->Y);
+  fe_mul(v,u,d);
+  fe_sub(u,u,h->Z);       /* u = y^2-1 */
+  fe_add(v,v,h->Z);       /* v = dy^2+1 */
+
+  fe_sq(v3,v);
+  fe_mul(v3,v3,v);        /* v3 = v^3 */
+  fe_sq(h->X,v3);
+  fe_mul(h->X,h->X,v);
+  fe_mul(h->X,h->X,u);    /* x = uv^7 */
+
+  fe_pow22523(h->X,h->X); /* x = (uv^7)^((q-5)/8) */
+  fe_mul(h->X,h->X,v3);
+  fe_mul(h->X,h->X,u);    /* x = uv^3(uv^7)^((q-5)/8) */
+
+  fe_sq(vxx,h->X);
+  fe_mul(vxx,vxx,v);
+  fe_sub(check,vxx,u);    /* vx^2-u */
+  if (fe_isnonzero(check)) {
+    fe_add(check,vxx,u);  /* vx^2+u */
+    if (fe_isnonzero(check)) return -1;
+    fe_mul(h->X,h->X,sqrtm1);
+  }
+
+  if (fe_isnegative(h->X) == (s[31] >> 7))
+    fe_neg(h->X,h->X);
+
+  fe_mul(h->T,h->X,h->Y);
+  return 0;
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_madd.c b/libmariadb/plugins/auth/ref10/ge_madd.c
new file mode 100644
index 00000000..62257177
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_madd.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p + q
+*/
+
+void ge_madd(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q)
+{
+  fe t0;
+#include "ge_madd.h"
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_madd.h b/libmariadb/plugins/auth/ref10/ge_madd.h
new file mode 100644
index 00000000..ecae8495
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_madd.h
@@ -0,0 +1,88 @@
+
+/* qhasm: enter ge_madd */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ypx2 */
+
+/* qhasm: fe ymx2 */
+
+/* qhasm: fe xy2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*ypx2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<ypx2=fe#15); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<ypx2=q->yplusx); */
+fe_mul(r->Z,r->X,q->yplusx);
+
+/* qhasm: B = YmX1*ymx2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<ymx2=fe#16); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<ymx2=q->yminusx); */
+fe_mul(r->Y,r->Y,q->yminusx);
+
+/* qhasm: C = xy2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<xy2d2=fe#17,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<xy2d2=q->xy2d,<T1=p->T); */
+fe_mul(r->T,q->xy2d,p->T);
+
+/* qhasm: D = 2*Z1 */
+/* asm 1: fe_add(>D=fe#5,<Z1=fe#13,<Z1=fe#13); */
+/* asm 2: fe_add(>D=t0,<Z1=p->Z,<Z1=p->Z); */
+fe_add(t0,p->Z,p->Z);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D+C */
+/* asm 1: fe_add(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_add(r->Z,t0,r->T);
+
+/* qhasm: T3 = D-C */
+/* asm 1: fe_sub(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>T3=r->T,<D=t0,<C=r->T); */
+fe_sub(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/ge_msub.c b/libmariadb/plugins/auth/ref10/ge_msub.c
new file mode 100644
index 00000000..741ecbf1
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_msub.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p - q
+*/
+
+void ge_msub(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q)
+{
+  fe t0;
+#include "ge_msub.h"
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_msub.h b/libmariadb/plugins/auth/ref10/ge_msub.h
new file mode 100644
index 00000000..500f986b
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_msub.h
@@ -0,0 +1,88 @@
+
+/* qhasm: enter ge_msub */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ypx2 */
+
+/* qhasm: fe ymx2 */
+
+/* qhasm: fe xy2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*ymx2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<ymx2=fe#16); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<ymx2=q->yminusx); */
+fe_mul(r->Z,r->X,q->yminusx);
+
+/* qhasm: B = YmX1*ypx2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<ypx2=fe#15); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<ypx2=q->yplusx); */
+fe_mul(r->Y,r->Y,q->yplusx);
+
+/* qhasm: C = xy2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<xy2d2=fe#17,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<xy2d2=q->xy2d,<T1=p->T); */
+fe_mul(r->T,q->xy2d,p->T);
+
+/* qhasm: D = 2*Z1 */
+/* asm 1: fe_add(>D=fe#5,<Z1=fe#13,<Z1=fe#13); */
+/* asm 2: fe_add(>D=t0,<Z1=p->Z,<Z1=p->Z); */
+fe_add(t0,p->Z,p->Z);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D-C */
+/* asm 1: fe_sub(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_sub(r->Z,t0,r->T);
+
+/* qhasm: T3 = D+C */
+/* asm 1: fe_add(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>T3=r->T,<D=t0,<C=r->T); */
+fe_add(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/ge_p1p1_to_p2.c b/libmariadb/plugins/auth/ref10/ge_p1p1_to_p2.c
new file mode 100644
index 00000000..9bb5013d
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p1p1_to_p2.c
@@ -0,0 +1,12 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+extern void ge_p1p1_to_p2(ge_p2 *r,const ge_p1p1 *p)
+{
+  fe_mul(r->X,p->X,p->T);
+  fe_mul(r->Y,p->Y,p->Z);
+  fe_mul(r->Z,p->Z,p->T);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p1p1_to_p3.c b/libmariadb/plugins/auth/ref10/ge_p1p1_to_p3.c
new file mode 100644
index 00000000..2f57b109
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p1p1_to_p3.c
@@ -0,0 +1,13 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+extern void ge_p1p1_to_p3(ge_p3 *r,const ge_p1p1 *p)
+{
+  fe_mul(r->X,p->X,p->T);
+  fe_mul(r->Y,p->Y,p->Z);
+  fe_mul(r->Z,p->Z,p->T);
+  fe_mul(r->T,p->X,p->Y);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p2_0.c b/libmariadb/plugins/auth/ref10/ge_p2_0.c
new file mode 100644
index 00000000..6191d1e6
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p2_0.c
@@ -0,0 +1,8 @@
+#include "ge.h"
+
+void ge_p2_0(ge_p2 *h)
+{
+  fe_0(h->X);
+  fe_1(h->Y);
+  fe_1(h->Z);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p2_dbl.c b/libmariadb/plugins/auth/ref10/ge_p2_dbl.c
new file mode 100644
index 00000000..2e332b5c
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p2_dbl.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = 2 * p
+*/
+
+void ge_p2_dbl(ge_p1p1 *r,const ge_p2 *p)
+{
+  fe t0;
+#include "ge_p2_dbl.h"
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p2_dbl.h b/libmariadb/plugins/auth/ref10/ge_p2_dbl.h
new file mode 100644
index 00000000..128efed9
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p2_dbl.h
@@ -0,0 +1,73 @@
+
+/* qhasm: enter ge_p2_dbl */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe AA */
+
+/* qhasm: fe XX */
+
+/* qhasm: fe YY */
+
+/* qhasm: fe B */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: XX=X1^2 */
+/* asm 1: fe_sq(>XX=fe#1,<X1=fe#11); */
+/* asm 2: fe_sq(>XX=r->X,<X1=p->X); */
+fe_sq(r->X,p->X);
+
+/* qhasm: YY=Y1^2 */
+/* asm 1: fe_sq(>YY=fe#3,<Y1=fe#12); */
+/* asm 2: fe_sq(>YY=r->Z,<Y1=p->Y); */
+fe_sq(r->Z,p->Y);
+
+/* qhasm: B=2*Z1^2 */
+/* asm 1: fe_sq2(>B=fe#4,<Z1=fe#13); */
+/* asm 2: fe_sq2(>B=r->T,<Z1=p->Z); */
+fe_sq2(r->T,p->Z);
+
+/* qhasm: A=X1+Y1 */
+/* asm 1: fe_add(>A=fe#2,<X1=fe#11,<Y1=fe#12); */
+/* asm 2: fe_add(>A=r->Y,<X1=p->X,<Y1=p->Y); */
+fe_add(r->Y,p->X,p->Y);
+
+/* qhasm: AA=A^2 */
+/* asm 1: fe_sq(>AA=fe#5,<A=fe#2); */
+/* asm 2: fe_sq(>AA=t0,<A=r->Y); */
+fe_sq(t0,r->Y);
+
+/* qhasm: Y3=YY+XX */
+/* asm 1: fe_add(>Y3=fe#2,<YY=fe#3,<XX=fe#1); */
+/* asm 2: fe_add(>Y3=r->Y,<YY=r->Z,<XX=r->X); */
+fe_add(r->Y,r->Z,r->X);
+
+/* qhasm: Z3=YY-XX */
+/* asm 1: fe_sub(>Z3=fe#3,<YY=fe#3,<XX=fe#1); */
+/* asm 2: fe_sub(>Z3=r->Z,<YY=r->Z,<XX=r->X); */
+fe_sub(r->Z,r->Z,r->X);
+
+/* qhasm: X3=AA-Y3 */
+/* asm 1: fe_sub(>X3=fe#1,<AA=fe#5,<Y3=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<AA=t0,<Y3=r->Y); */
+fe_sub(r->X,t0,r->Y);
+
+/* qhasm: T3=B-Z3 */
+/* asm 1: fe_sub(>T3=fe#4,<B=fe#4,<Z3=fe#3); */
+/* asm 2: fe_sub(>T3=r->T,<B=r->T,<Z3=r->Z); */
+fe_sub(r->T,r->T,r->Z);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/ge_p3_0.c b/libmariadb/plugins/auth/ref10/ge_p3_0.c
new file mode 100644
index 00000000..401b2935
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p3_0.c
@@ -0,0 +1,9 @@
+#include "ge.h"
+
+void ge_p3_0(ge_p3 *h)
+{
+  fe_0(h->X);
+  fe_1(h->Y);
+  fe_1(h->Z);
+  fe_0(h->T);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p3_dbl.c b/libmariadb/plugins/auth/ref10/ge_p3_dbl.c
new file mode 100644
index 00000000..0d8a0591
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p3_dbl.c
@@ -0,0 +1,12 @@
+#include "ge.h"
+
+/*
+r = 2 * p
+*/
+
+void ge_p3_dbl(ge_p1p1 *r,const ge_p3 *p)
+{
+  ge_p2 q;
+  ge_p3_to_p2(&q,p);
+  ge_p2_dbl(r,&q);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p3_to_cached.c b/libmariadb/plugins/auth/ref10/ge_p3_to_cached.c
new file mode 100644
index 00000000..bde64228
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p3_to_cached.c
@@ -0,0 +1,17 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+static const fe d2 = {
+#include "d2.h"
+} ;
+
+extern void ge_p3_to_cached(ge_cached *r,const ge_p3 *p)
+{
+  fe_add(r->YplusX,p->Y,p->X);
+  fe_sub(r->YminusX,p->Y,p->X);
+  fe_copy(r->Z,p->Z);
+  fe_mul(r->T2d,p->T,d2);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p3_to_p2.c b/libmariadb/plugins/auth/ref10/ge_p3_to_p2.c
new file mode 100644
index 00000000..e532a9e4
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p3_to_p2.c
@@ -0,0 +1,12 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+extern void ge_p3_to_p2(ge_p2 *r,const ge_p3 *p)
+{
+  fe_copy(r->X,p->X);
+  fe_copy(r->Y,p->Y);
+  fe_copy(r->Z,p->Z);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_p3_tobytes.c b/libmariadb/plugins/auth/ref10/ge_p3_tobytes.c
new file mode 100644
index 00000000..21cb2fc6
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_p3_tobytes.c
@@ -0,0 +1,14 @@
+#include "ge.h"
+
+void ge_p3_tobytes(unsigned char *s,const ge_p3 *h)
+{
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(recip,h->Z);
+  fe_mul(x,h->X,recip);
+  fe_mul(y,h->Y,recip);
+  fe_tobytes(s,y);
+  s[31] ^= fe_isnegative(x) << 7;
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_precomp_0.c b/libmariadb/plugins/auth/ref10/ge_precomp_0.c
new file mode 100644
index 00000000..2e218861
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_precomp_0.c
@@ -0,0 +1,8 @@
+#include "ge.h"
+
+void ge_precomp_0(ge_precomp *h)
+{
+  fe_1(h->yplusx);
+  fe_1(h->yminusx);
+  fe_0(h->xy2d);
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_scalarmult_base.c b/libmariadb/plugins/auth/ref10/ge_scalarmult_base.c
new file mode 100644
index 00000000..421e4fa0
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_scalarmult_base.c
@@ -0,0 +1,105 @@
+#include "ge.h"
+#include "crypto_uint32.h"
+
+static unsigned char equal(signed char b,signed char c)
+{
+  unsigned char ub = b;
+  unsigned char uc = c;
+  unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */
+  crypto_uint32 y = x; /* 0: yes; 1..255: no */
+  y -= 1; /* 4294967295: yes; 0..254: no */
+  y >>= 31; /* 1: yes; 0: no */
+  return y;
+}
+
+static unsigned char negative(signed char b)
+{
+  unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */
+  x >>= 63; /* 1: yes; 0: no */
+  return x;
+}
+
+static void cmov(ge_precomp *t,ge_precomp *u,unsigned char b)
+{
+  fe_cmov(t->yplusx,u->yplusx,b);
+  fe_cmov(t->yminusx,u->yminusx,b);
+  fe_cmov(t->xy2d,u->xy2d,b);
+}
+
+/* base[i][j] = (j+1)*256^i*B */
+static ge_precomp base[32][8] = {
+#include "base.h"
+} ;
+
+static void select(ge_precomp *t,int pos,signed char b)
+{
+  ge_precomp minust;
+  unsigned char bnegative = negative(b);
+  unsigned char babs = b - (((-bnegative) & b) << 1);
+
+  ge_precomp_0(t);
+  cmov(t,&base[pos][0],equal(babs,1));
+  cmov(t,&base[pos][1],equal(babs,2));
+  cmov(t,&base[pos][2],equal(babs,3));
+  cmov(t,&base[pos][3],equal(babs,4));
+  cmov(t,&base[pos][4],equal(babs,5));
+  cmov(t,&base[pos][5],equal(babs,6));
+  cmov(t,&base[pos][6],equal(babs,7));
+  cmov(t,&base[pos][7],equal(babs,8));
+  fe_copy(minust.yplusx,t->yminusx);
+  fe_copy(minust.yminusx,t->yplusx);
+  fe_neg(minust.xy2d,t->xy2d);
+  cmov(t,&minust,bnegative);
+}
+
+/*
+h = a * B
+where a = a[0]+256*a[1]+...+256^31 a[31]
+B is the Ed25519 base point (x,4/5) with x positive.
+
+Preconditions:
+  a[31] <= 127
+*/
+
+void ge_scalarmult_base(ge_p3 *h,const unsigned char *a)
+{
+  signed char e[64];
+  signed char carry;
+  ge_p1p1 r;
+  ge_p2 s;
+  ge_precomp t;
+  int i;
+
+  for (i = 0;i < 32;++i) {
+    e[2 * i + 0] = (a[i] >> 0) & 15;
+    e[2 * i + 1] = (a[i] >> 4) & 15;
+  }
+  /* each e[i] is between 0 and 15 */
+  /* e[63] is between 0 and 7 */
+
+  carry = 0;
+  for (i = 0;i < 63;++i) {
+    e[i] += carry;
+    carry = e[i] + 8;
+    carry >>= 4;
+    e[i] -= carry << 4;
+  }
+  e[63] += carry;
+  /* each e[i] is between -8 and 8 */
+
+  ge_p3_0(h);
+  for (i = 1;i < 64;i += 2) {
+    select(&t,i / 2,e[i]);
+    ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r);
+  }
+
+  ge_p3_dbl(&r,h);  ge_p1p1_to_p2(&s,&r);
+  ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+  ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+  ge_p2_dbl(&r,&s); ge_p1p1_to_p3(h,&r);
+
+  for (i = 0;i < 64;i += 2) {
+    select(&t,i / 2,e[i]);
+    ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r);
+  }
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_sub.c b/libmariadb/plugins/auth/ref10/ge_sub.c
new file mode 100644
index 00000000..69f3d540
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_sub.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p - q
+*/
+
+void ge_sub(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q)
+{
+  fe t0;
+#include "ge_sub.h"
+}
diff --git a/libmariadb/plugins/auth/ref10/ge_sub.h b/libmariadb/plugins/auth/ref10/ge_sub.h
new file mode 100644
index 00000000..b4ef1f5d
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_sub.h
@@ -0,0 +1,97 @@
+
+/* qhasm: enter ge_sub */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe Z2 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ZZ */
+
+/* qhasm: fe YpX2 */
+
+/* qhasm: fe YmX2 */
+
+/* qhasm: fe T2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*YmX2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<YmX2=fe#16); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<YmX2=q->YminusX); */
+fe_mul(r->Z,r->X,q->YminusX);
+
+/* qhasm: B = YmX1*YpX2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<YpX2=fe#15); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<YpX2=q->YplusX); */
+fe_mul(r->Y,r->Y,q->YplusX);
+
+/* qhasm: C = T2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<T2d2=fe#18,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<T2d2=q->T2d,<T1=p->T); */
+fe_mul(r->T,q->T2d,p->T);
+
+/* qhasm: ZZ = Z1*Z2 */
+/* asm 1: fe_mul(>ZZ=fe#1,<Z1=fe#13,<Z2=fe#17); */
+/* asm 2: fe_mul(>ZZ=r->X,<Z1=p->Z,<Z2=q->Z); */
+fe_mul(r->X,p->Z,q->Z);
+
+/* qhasm: D = 2*ZZ */
+/* asm 1: fe_add(>D=fe#5,<ZZ=fe#1,<ZZ=fe#1); */
+/* asm 2: fe_add(>D=t0,<ZZ=r->X,<ZZ=r->X); */
+fe_add(t0,r->X,r->X);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D-C */
+/* asm 1: fe_sub(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_sub(r->Z,t0,r->T);
+
+/* qhasm: T3 = D+C */
+/* asm 1: fe_add(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>T3=r->T,<D=t0,<C=r->T); */
+fe_add(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/ge_tobytes.c b/libmariadb/plugins/auth/ref10/ge_tobytes.c
new file mode 100644
index 00000000..31b3d33e
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/ge_tobytes.c
@@ -0,0 +1,14 @@
+#include "ge.h"
+
+void ge_tobytes(unsigned char *s,const ge_p2 *h)
+{
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(recip,h->Z);
+  fe_mul(x,h->X,recip);
+  fe_mul(y,h->Y,recip);
+  fe_tobytes(s,y);
+  s[31] ^= fe_isnegative(x) << 7;
+}
diff --git a/libmariadb/plugins/auth/ref10/keypair.c b/libmariadb/plugins/auth/ref10/keypair.c
new file mode 100644
index 00000000..64000838
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/keypair.c
@@ -0,0 +1,23 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "ge.h"
+
+int crypto_sign_keypair(
+  unsigned char *pk,
+  unsigned char *pw, unsigned long long pwlen
+)
+{
+  unsigned char az[64];
+  ge_p3 A;
+
+  crypto_hash_sha512(az,pw,pwlen);
+  az[0] &= 248;
+  az[31] &= 63;
+  az[31] |= 64;
+
+  ge_scalarmult_base(&A,az);
+  ge_p3_tobytes(pk,&A);
+
+  return 0;
+}
diff --git a/libmariadb/plugins/auth/ref10/open.c b/libmariadb/plugins/auth/ref10/open.c
new file mode 100644
index 00000000..7362b681
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/open.c
@@ -0,0 +1,36 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "ge.h"
+#include "sc.h"
+
+int crypto_sign_open(
+  unsigned char *sm, unsigned long long smlen,
+  const unsigned char *pk
+)
+{
+  unsigned char scopy[32];
+  unsigned char h[64];
+  unsigned char rcheck[32];
+  ge_p3 A;
+  ge_p2 R;
+
+  if (smlen < 64) goto badsig;
+  if (sm[63] & 224) goto badsig;
+  if (ge_frombytes_negate_vartime(&A,pk) != 0) goto badsig;
+
+  memmove(scopy,sm + 32,32);
+
+  memmove(sm + 32,pk,32);
+  crypto_hash_sha512(h,sm,smlen);
+  sc_reduce(h);
+
+  ge_double_scalarmult_vartime(&R,h,&A,scopy);
+  ge_tobytes(rcheck,&R);
+  if (crypto_verify_32(rcheck,sm) == 0)
+    return 0;
+
+badsig:
+  return -1;
+}
diff --git a/libmariadb/plugins/auth/ref10/pow22523.h b/libmariadb/plugins/auth/ref10/pow22523.h
new file mode 100644
index 00000000..d476ed14
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/pow22523.h
@@ -0,0 +1,168 @@
+
+/* qhasm: fe z1 */
+
+/* qhasm: fe z2 */
+
+/* qhasm: fe z8 */
+
+/* qhasm: fe z9 */
+
+/* qhasm: fe z11 */
+
+/* qhasm: fe z22 */
+
+/* qhasm: fe z_5_0 */
+
+/* qhasm: fe z_10_5 */
+
+/* qhasm: fe z_10_0 */
+
+/* qhasm: fe z_20_10 */
+
+/* qhasm: fe z_20_0 */
+
+/* qhasm: fe z_40_20 */
+
+/* qhasm: fe z_40_0 */
+
+/* qhasm: fe z_50_10 */
+
+/* qhasm: fe z_50_0 */
+
+/* qhasm: fe z_100_50 */
+
+/* qhasm: fe z_100_0 */
+
+/* qhasm: fe z_200_100 */
+
+/* qhasm: fe z_200_0 */
+
+/* qhasm: fe z_250_50 */
+
+/* qhasm: fe z_250_0 */
+
+/* qhasm: fe z_252_2 */
+
+/* qhasm: fe z_252_3 */
+
+/* qhasm: enter pow22523 */
+
+/* qhasm: z2 = z1^2^1 */
+/* asm 1: fe_sq(>z2=fe#1,<z1=fe#11); for (i = 1;i < 1;++i) fe_sq(>z2=fe#1,>z2=fe#1); */
+/* asm 2: fe_sq(>z2=t0,<z1=z); for (i = 1;i < 1;++i) fe_sq(>z2=t0,>z2=t0); */
+fe_sq(t0,z); 
+
+/* covscan CWE-561 dead code: variable i can't be < 1
+for (i = 1;i < 1;++i) fe_sq(t0,t0);
+*/
+
+/* qhasm: z8 = z2^2^2 */
+/* asm 1: fe_sq(>z8=fe#2,<z2=fe#1); for (i = 1;i < 2;++i) fe_sq(>z8=fe#2,>z8=fe#2); */
+/* asm 2: fe_sq(>z8=t1,<z2=t0); for (i = 1;i < 2;++i) fe_sq(>z8=t1,>z8=t1); */
+fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1);
+
+/* qhasm: z9 = z1*z8 */
+/* asm 1: fe_mul(>z9=fe#2,<z1=fe#11,<z8=fe#2); */
+/* asm 2: fe_mul(>z9=t1,<z1=z,<z8=t1); */
+fe_mul(t1,z,t1);
+
+/* qhasm: z11 = z2*z9 */
+/* asm 1: fe_mul(>z11=fe#1,<z2=fe#1,<z9=fe#2); */
+/* asm 2: fe_mul(>z11=t0,<z2=t0,<z9=t1); */
+fe_mul(t0,t0,t1);
+
+/* qhasm: z22 = z11^2^1 */
+/* asm 1: fe_sq(>z22=fe#1,<z11=fe#1); for (i = 1;i < 1;++i) fe_sq(>z22=fe#1,>z22=fe#1); */
+/* asm 2: fe_sq(>z22=t0,<z11=t0); for (i = 1;i < 1;++i) fe_sq(>z22=t0,>z22=t0); */
+fe_sq(t0,t0); 
+
+/* covscan CWE-561 dead code: variable i can't be < 1
+for (i = 1;i < 1;++i) fe_sq(t0,t0);
+*/
+
+/* qhasm: z_5_0 = z9*z22 */
+/* asm 1: fe_mul(>z_5_0=fe#1,<z9=fe#2,<z22=fe#1); */
+/* asm 2: fe_mul(>z_5_0=t0,<z9=t1,<z22=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_10_5 = z_5_0^2^5 */
+/* asm 1: fe_sq(>z_10_5=fe#2,<z_5_0=fe#1); for (i = 1;i < 5;++i) fe_sq(>z_10_5=fe#2,>z_10_5=fe#2); */
+/* asm 2: fe_sq(>z_10_5=t1,<z_5_0=t0); for (i = 1;i < 5;++i) fe_sq(>z_10_5=t1,>z_10_5=t1); */
+fe_sq(t1,t0); for (i = 1;i < 5;++i) fe_sq(t1,t1);
+
+/* qhasm: z_10_0 = z_10_5*z_5_0 */
+/* asm 1: fe_mul(>z_10_0=fe#1,<z_10_5=fe#2,<z_5_0=fe#1); */
+/* asm 2: fe_mul(>z_10_0=t0,<z_10_5=t1,<z_5_0=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_20_10 = z_10_0^2^10 */
+/* asm 1: fe_sq(>z_20_10=fe#2,<z_10_0=fe#1); for (i = 1;i < 10;++i) fe_sq(>z_20_10=fe#2,>z_20_10=fe#2); */
+/* asm 2: fe_sq(>z_20_10=t1,<z_10_0=t0); for (i = 1;i < 10;++i) fe_sq(>z_20_10=t1,>z_20_10=t1); */
+fe_sq(t1,t0); for (i = 1;i < 10;++i) fe_sq(t1,t1);
+
+/* qhasm: z_20_0 = z_20_10*z_10_0 */
+/* asm 1: fe_mul(>z_20_0=fe#2,<z_20_10=fe#2,<z_10_0=fe#1); */
+/* asm 2: fe_mul(>z_20_0=t1,<z_20_10=t1,<z_10_0=t0); */
+fe_mul(t1,t1,t0);
+
+/* qhasm: z_40_20 = z_20_0^2^20 */
+/* asm 1: fe_sq(>z_40_20=fe#3,<z_20_0=fe#2); for (i = 1;i < 20;++i) fe_sq(>z_40_20=fe#3,>z_40_20=fe#3); */
+/* asm 2: fe_sq(>z_40_20=t2,<z_20_0=t1); for (i = 1;i < 20;++i) fe_sq(>z_40_20=t2,>z_40_20=t2); */
+fe_sq(t2,t1); for (i = 1;i < 20;++i) fe_sq(t2,t2);
+
+/* qhasm: z_40_0 = z_40_20*z_20_0 */
+/* asm 1: fe_mul(>z_40_0=fe#2,<z_40_20=fe#3,<z_20_0=fe#2); */
+/* asm 2: fe_mul(>z_40_0=t1,<z_40_20=t2,<z_20_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_50_10 = z_40_0^2^10 */
+/* asm 1: fe_sq(>z_50_10=fe#2,<z_40_0=fe#2); for (i = 1;i < 10;++i) fe_sq(>z_50_10=fe#2,>z_50_10=fe#2); */
+/* asm 2: fe_sq(>z_50_10=t1,<z_40_0=t1); for (i = 1;i < 10;++i) fe_sq(>z_50_10=t1,>z_50_10=t1); */
+fe_sq(t1,t1); for (i = 1;i < 10;++i) fe_sq(t1,t1);
+
+/* qhasm: z_50_0 = z_50_10*z_10_0 */
+/* asm 1: fe_mul(>z_50_0=fe#1,<z_50_10=fe#2,<z_10_0=fe#1); */
+/* asm 2: fe_mul(>z_50_0=t0,<z_50_10=t1,<z_10_0=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_100_50 = z_50_0^2^50 */
+/* asm 1: fe_sq(>z_100_50=fe#2,<z_50_0=fe#1); for (i = 1;i < 50;++i) fe_sq(>z_100_50=fe#2,>z_100_50=fe#2); */
+/* asm 2: fe_sq(>z_100_50=t1,<z_50_0=t0); for (i = 1;i < 50;++i) fe_sq(>z_100_50=t1,>z_100_50=t1); */
+fe_sq(t1,t0); for (i = 1;i < 50;++i) fe_sq(t1,t1);
+
+/* qhasm: z_100_0 = z_100_50*z_50_0 */
+/* asm 1: fe_mul(>z_100_0=fe#2,<z_100_50=fe#2,<z_50_0=fe#1); */
+/* asm 2: fe_mul(>z_100_0=t1,<z_100_50=t1,<z_50_0=t0); */
+fe_mul(t1,t1,t0);
+
+/* qhasm: z_200_100 = z_100_0^2^100 */
+/* asm 1: fe_sq(>z_200_100=fe#3,<z_100_0=fe#2); for (i = 1;i < 100;++i) fe_sq(>z_200_100=fe#3,>z_200_100=fe#3); */
+/* asm 2: fe_sq(>z_200_100=t2,<z_100_0=t1); for (i = 1;i < 100;++i) fe_sq(>z_200_100=t2,>z_200_100=t2); */
+fe_sq(t2,t1); for (i = 1;i < 100;++i) fe_sq(t2,t2);
+
+/* qhasm: z_200_0 = z_200_100*z_100_0 */
+/* asm 1: fe_mul(>z_200_0=fe#2,<z_200_100=fe#3,<z_100_0=fe#2); */
+/* asm 2: fe_mul(>z_200_0=t1,<z_200_100=t2,<z_100_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_250_50 = z_200_0^2^50 */
+/* asm 1: fe_sq(>z_250_50=fe#2,<z_200_0=fe#2); for (i = 1;i < 50;++i) fe_sq(>z_250_50=fe#2,>z_250_50=fe#2); */
+/* asm 2: fe_sq(>z_250_50=t1,<z_200_0=t1); for (i = 1;i < 50;++i) fe_sq(>z_250_50=t1,>z_250_50=t1); */
+fe_sq(t1,t1); for (i = 1;i < 50;++i) fe_sq(t1,t1);
+
+/* qhasm: z_250_0 = z_250_50*z_50_0 */
+/* asm 1: fe_mul(>z_250_0=fe#1,<z_250_50=fe#2,<z_50_0=fe#1); */
+/* asm 2: fe_mul(>z_250_0=t0,<z_250_50=t1,<z_50_0=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_252_2 = z_250_0^2^2 */
+/* asm 1: fe_sq(>z_252_2=fe#1,<z_250_0=fe#1); for (i = 1;i < 2;++i) fe_sq(>z_252_2=fe#1,>z_252_2=fe#1); */
+/* asm 2: fe_sq(>z_252_2=t0,<z_250_0=t0); for (i = 1;i < 2;++i) fe_sq(>z_252_2=t0,>z_252_2=t0); */
+fe_sq(t0,t0); for (i = 1;i < 2;++i) fe_sq(t0,t0);
+
+/* qhasm: z_252_3 = z_252_2*z1 */
+/* asm 1: fe_mul(>z_252_3=fe#12,<z_252_2=fe#1,<z1=fe#11); */
+/* asm 2: fe_mul(>z_252_3=out,<z_252_2=t0,<z1=z); */
+fe_mul(out,t0,z);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/pow225521.h b/libmariadb/plugins/auth/ref10/pow225521.h
new file mode 100644
index 00000000..cb889bc9
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/pow225521.h
@@ -0,0 +1,166 @@
+
+/* qhasm: fe z1 */
+
+/* qhasm: fe z2 */
+
+/* qhasm: fe z8 */
+
+/* qhasm: fe z9 */
+
+/* qhasm: fe z11 */
+
+/* qhasm: fe z22 */
+
+/* qhasm: fe z_5_0 */
+
+/* qhasm: fe z_10_5 */
+
+/* qhasm: fe z_10_0 */
+
+/* qhasm: fe z_20_10 */
+
+/* qhasm: fe z_20_0 */
+
+/* qhasm: fe z_40_20 */
+
+/* qhasm: fe z_40_0 */
+
+/* qhasm: fe z_50_10 */
+
+/* qhasm: fe z_50_0 */
+
+/* qhasm: fe z_100_50 */
+
+/* qhasm: fe z_100_0 */
+
+/* qhasm: fe z_200_100 */
+
+/* qhasm: fe z_200_0 */
+
+/* qhasm: fe z_250_50 */
+
+/* qhasm: fe z_250_0 */
+
+/* qhasm: fe z_255_5 */
+
+/* qhasm: fe z_255_21 */
+
+/* qhasm: enter pow225521 */
+
+/* qhasm: z2 = z1^2^1 */
+/* asm 1: fe_sq(>z2=fe#1,<z1=fe#11); for (i = 1;i < 1;++i) fe_sq(>z2=fe#1,>z2=fe#1); */
+/* asm 2: fe_sq(>z2=t0,<z1=z); for (i = 1;i < 1;++i) fe_sq(>z2=t0,>z2=t0); */
+fe_sq(t0,z); 
+/* covscan CWE-561 dead code: variable i can't be < 1
+for (i = 1;i < 1;++i) fe_sq(t0,t0);
+*/
+
+/* qhasm: z8 = z2^2^2 */
+/* asm 1: fe_sq(>z8=fe#2,<z2=fe#1); for (i = 1;i < 2;++i) fe_sq(>z8=fe#2,>z8=fe#2); */
+/* asm 2: fe_sq(>z8=t1,<z2=t0); for (i = 1;i < 2;++i) fe_sq(>z8=t1,>z8=t1); */
+fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1);
+
+/* qhasm: z9 = z1*z8 */
+/* asm 1: fe_mul(>z9=fe#2,<z1=fe#11,<z8=fe#2); */
+/* asm 2: fe_mul(>z9=t1,<z1=z,<z8=t1); */
+fe_mul(t1,z,t1);
+
+/* qhasm: z11 = z2*z9 */
+/* asm 1: fe_mul(>z11=fe#1,<z2=fe#1,<z9=fe#2); */
+/* asm 2: fe_mul(>z11=t0,<z2=t0,<z9=t1); */
+fe_mul(t0,t0,t1);
+
+/* qhasm: z22 = z11^2^1 */
+/* asm 1: fe_sq(>z22=fe#3,<z11=fe#1); for (i = 1;i < 1;++i) fe_sq(>z22=fe#3,>z22=fe#3); */
+/* asm 2: fe_sq(>z22=t2,<z11=t0); for (i = 1;i < 1;++i) fe_sq(>z22=t2,>z22=t2); */
+fe_sq(t2,t0);
+/* covscan CWE-561 dead code: variable i can't be < 1
+for (i = 1;i < 1;++i) fe_sq(t2,t2);
+*/
+
+/* qhasm: z_5_0 = z9*z22 */
+/* asm 1: fe_mul(>z_5_0=fe#2,<z9=fe#2,<z22=fe#3); */
+/* asm 2: fe_mul(>z_5_0=t1,<z9=t1,<z22=t2); */
+fe_mul(t1,t1,t2);
+
+/* qhasm: z_10_5 = z_5_0^2^5 */
+/* asm 1: fe_sq(>z_10_5=fe#3,<z_5_0=fe#2); for (i = 1;i < 5;++i) fe_sq(>z_10_5=fe#3,>z_10_5=fe#3); */
+/* asm 2: fe_sq(>z_10_5=t2,<z_5_0=t1); for (i = 1;i < 5;++i) fe_sq(>z_10_5=t2,>z_10_5=t2); */
+fe_sq(t2,t1); for (i = 1;i < 5;++i) fe_sq(t2,t2);
+
+/* qhasm: z_10_0 = z_10_5*z_5_0 */
+/* asm 1: fe_mul(>z_10_0=fe#2,<z_10_5=fe#3,<z_5_0=fe#2); */
+/* asm 2: fe_mul(>z_10_0=t1,<z_10_5=t2,<z_5_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_20_10 = z_10_0^2^10 */
+/* asm 1: fe_sq(>z_20_10=fe#3,<z_10_0=fe#2); for (i = 1;i < 10;++i) fe_sq(>z_20_10=fe#3,>z_20_10=fe#3); */
+/* asm 2: fe_sq(>z_20_10=t2,<z_10_0=t1); for (i = 1;i < 10;++i) fe_sq(>z_20_10=t2,>z_20_10=t2); */
+fe_sq(t2,t1); for (i = 1;i < 10;++i) fe_sq(t2,t2);
+
+/* qhasm: z_20_0 = z_20_10*z_10_0 */
+/* asm 1: fe_mul(>z_20_0=fe#3,<z_20_10=fe#3,<z_10_0=fe#2); */
+/* asm 2: fe_mul(>z_20_0=t2,<z_20_10=t2,<z_10_0=t1); */
+fe_mul(t2,t2,t1);
+
+/* qhasm: z_40_20 = z_20_0^2^20 */
+/* asm 1: fe_sq(>z_40_20=fe#4,<z_20_0=fe#3); for (i = 1;i < 20;++i) fe_sq(>z_40_20=fe#4,>z_40_20=fe#4); */
+/* asm 2: fe_sq(>z_40_20=t3,<z_20_0=t2); for (i = 1;i < 20;++i) fe_sq(>z_40_20=t3,>z_40_20=t3); */
+fe_sq(t3,t2); for (i = 1;i < 20;++i) fe_sq(t3,t3);
+
+/* qhasm: z_40_0 = z_40_20*z_20_0 */
+/* asm 1: fe_mul(>z_40_0=fe#3,<z_40_20=fe#4,<z_20_0=fe#3); */
+/* asm 2: fe_mul(>z_40_0=t2,<z_40_20=t3,<z_20_0=t2); */
+fe_mul(t2,t3,t2);
+
+/* qhasm: z_50_10 = z_40_0^2^10 */
+/* asm 1: fe_sq(>z_50_10=fe#3,<z_40_0=fe#3); for (i = 1;i < 10;++i) fe_sq(>z_50_10=fe#3,>z_50_10=fe#3); */
+/* asm 2: fe_sq(>z_50_10=t2,<z_40_0=t2); for (i = 1;i < 10;++i) fe_sq(>z_50_10=t2,>z_50_10=t2); */
+fe_sq(t2,t2); for (i = 1;i < 10;++i) fe_sq(t2,t2);
+
+/* qhasm: z_50_0 = z_50_10*z_10_0 */
+/* asm 1: fe_mul(>z_50_0=fe#2,<z_50_10=fe#3,<z_10_0=fe#2); */
+/* asm 2: fe_mul(>z_50_0=t1,<z_50_10=t2,<z_10_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_100_50 = z_50_0^2^50 */
+/* asm 1: fe_sq(>z_100_50=fe#3,<z_50_0=fe#2); for (i = 1;i < 50;++i) fe_sq(>z_100_50=fe#3,>z_100_50=fe#3); */
+/* asm 2: fe_sq(>z_100_50=t2,<z_50_0=t1); for (i = 1;i < 50;++i) fe_sq(>z_100_50=t2,>z_100_50=t2); */
+fe_sq(t2,t1); for (i = 1;i < 50;++i) fe_sq(t2,t2);
+
+/* qhasm: z_100_0 = z_100_50*z_50_0 */
+/* asm 1: fe_mul(>z_100_0=fe#3,<z_100_50=fe#3,<z_50_0=fe#2); */
+/* asm 2: fe_mul(>z_100_0=t2,<z_100_50=t2,<z_50_0=t1); */
+fe_mul(t2,t2,t1);
+
+/* qhasm: z_200_100 = z_100_0^2^100 */
+/* asm 1: fe_sq(>z_200_100=fe#4,<z_100_0=fe#3); for (i = 1;i < 100;++i) fe_sq(>z_200_100=fe#4,>z_200_100=fe#4); */
+/* asm 2: fe_sq(>z_200_100=t3,<z_100_0=t2); for (i = 1;i < 100;++i) fe_sq(>z_200_100=t3,>z_200_100=t3); */
+fe_sq(t3,t2); for (i = 1;i < 100;++i) fe_sq(t3,t3);
+
+/* qhasm: z_200_0 = z_200_100*z_100_0 */
+/* asm 1: fe_mul(>z_200_0=fe#3,<z_200_100=fe#4,<z_100_0=fe#3); */
+/* asm 2: fe_mul(>z_200_0=t2,<z_200_100=t3,<z_100_0=t2); */
+fe_mul(t2,t3,t2);
+
+/* qhasm: z_250_50 = z_200_0^2^50 */
+/* asm 1: fe_sq(>z_250_50=fe#3,<z_200_0=fe#3); for (i = 1;i < 50;++i) fe_sq(>z_250_50=fe#3,>z_250_50=fe#3); */
+/* asm 2: fe_sq(>z_250_50=t2,<z_200_0=t2); for (i = 1;i < 50;++i) fe_sq(>z_250_50=t2,>z_250_50=t2); */
+fe_sq(t2,t2); for (i = 1;i < 50;++i) fe_sq(t2,t2);
+
+/* qhasm: z_250_0 = z_250_50*z_50_0 */
+/* asm 1: fe_mul(>z_250_0=fe#2,<z_250_50=fe#3,<z_50_0=fe#2); */
+/* asm 2: fe_mul(>z_250_0=t1,<z_250_50=t2,<z_50_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_255_5 = z_250_0^2^5 */
+/* asm 1: fe_sq(>z_255_5=fe#2,<z_250_0=fe#2); for (i = 1;i < 5;++i) fe_sq(>z_255_5=fe#2,>z_255_5=fe#2); */
+/* asm 2: fe_sq(>z_255_5=t1,<z_250_0=t1); for (i = 1;i < 5;++i) fe_sq(>z_255_5=t1,>z_255_5=t1); */
+fe_sq(t1,t1); for (i = 1;i < 5;++i) fe_sq(t1,t1);
+
+/* qhasm: z_255_21 = z_255_5*z11 */
+/* asm 1: fe_mul(>z_255_21=fe#12,<z_255_5=fe#2,<z11=fe#1); */
+/* asm 2: fe_mul(>z_255_21=out,<z_255_5=t1,<z11=t0); */
+fe_mul(out,t1,t0);
+
+/* qhasm: return */
diff --git a/libmariadb/plugins/auth/ref10/sc.h b/libmariadb/plugins/auth/ref10/sc.h
new file mode 100644
index 00000000..d32ed2e8
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/sc.h
@@ -0,0 +1,15 @@
+#ifndef SC_H
+#define SC_H
+
+/*
+The set of scalars is \Z/l
+where l = 2^252 + 27742317777372353535851937790883648493.
+*/
+
+#define sc_reduce crypto_sign_ed25519_ref10_sc_reduce
+#define sc_muladd crypto_sign_ed25519_ref10_sc_muladd
+
+extern void sc_reduce(unsigned char *);
+extern void sc_muladd(unsigned char *,const unsigned char *,const unsigned char *,const unsigned char *);
+
+#endif
diff --git a/libmariadb/plugins/auth/ref10/sc_muladd.c b/libmariadb/plugins/auth/ref10/sc_muladd.c
new file mode 100644
index 00000000..6f1e9d02
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/sc_muladd.c
@@ -0,0 +1,368 @@
+#include "sc.h"
+#include "crypto_int64.h"
+#include "crypto_uint32.h"
+#include "crypto_uint64.h"
+
+static crypto_uint64 load_3(const unsigned char *in)
+{
+  crypto_uint64 result;
+  result = (crypto_uint64) in[0];
+  result |= ((crypto_uint64) in[1]) << 8;
+  result |= ((crypto_uint64) in[2]) << 16;
+  return result;
+}
+
+static crypto_uint64 load_4(const unsigned char *in)
+{
+  crypto_uint64 result;
+  result = (crypto_uint64) in[0];
+  result |= ((crypto_uint64) in[1]) << 8;
+  result |= ((crypto_uint64) in[2]) << 16;
+  result |= ((crypto_uint64) in[3]) << 24;
+  return result;
+}
+
+/*
+Input:
+  a[0]+256*a[1]+...+256^31*a[31] = a
+  b[0]+256*b[1]+...+256^31*b[31] = b
+  c[0]+256*c[1]+...+256^31*c[31] = c
+
+Output:
+  s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
+  where l = 2^252 + 27742317777372353535851937790883648493.
+*/
+
+void sc_muladd(unsigned char *s,const unsigned char *a,const unsigned char *b,const unsigned char *c)
+{
+  crypto_int64 a0 = 2097151 & load_3(a);
+  crypto_int64 a1 = 2097151 & (load_4(a + 2) >> 5);
+  crypto_int64 a2 = 2097151 & (load_3(a + 5) >> 2);
+  crypto_int64 a3 = 2097151 & (load_4(a + 7) >> 7);
+  crypto_int64 a4 = 2097151 & (load_4(a + 10) >> 4);
+  crypto_int64 a5 = 2097151 & (load_3(a + 13) >> 1);
+  crypto_int64 a6 = 2097151 & (load_4(a + 15) >> 6);
+  crypto_int64 a7 = 2097151 & (load_3(a + 18) >> 3);
+  crypto_int64 a8 = 2097151 & load_3(a + 21);
+  crypto_int64 a9 = 2097151 & (load_4(a + 23) >> 5);
+  crypto_int64 a10 = 2097151 & (load_3(a + 26) >> 2);
+  crypto_int64 a11 = (load_4(a + 28) >> 7);
+  crypto_int64 b0 = 2097151 & load_3(b);
+  crypto_int64 b1 = 2097151 & (load_4(b + 2) >> 5);
+  crypto_int64 b2 = 2097151 & (load_3(b + 5) >> 2);
+  crypto_int64 b3 = 2097151 & (load_4(b + 7) >> 7);
+  crypto_int64 b4 = 2097151 & (load_4(b + 10) >> 4);
+  crypto_int64 b5 = 2097151 & (load_3(b + 13) >> 1);
+  crypto_int64 b6 = 2097151 & (load_4(b + 15) >> 6);
+  crypto_int64 b7 = 2097151 & (load_3(b + 18) >> 3);
+  crypto_int64 b8 = 2097151 & load_3(b + 21);
+  crypto_int64 b9 = 2097151 & (load_4(b + 23) >> 5);
+  crypto_int64 b10 = 2097151 & (load_3(b + 26) >> 2);
+  crypto_int64 b11 = (load_4(b + 28) >> 7);
+  crypto_int64 c0 = 2097151 & load_3(c);
+  crypto_int64 c1 = 2097151 & (load_4(c + 2) >> 5);
+  crypto_int64 c2 = 2097151 & (load_3(c + 5) >> 2);
+  crypto_int64 c3 = 2097151 & (load_4(c + 7) >> 7);
+  crypto_int64 c4 = 2097151 & (load_4(c + 10) >> 4);
+  crypto_int64 c5 = 2097151 & (load_3(c + 13) >> 1);
+  crypto_int64 c6 = 2097151 & (load_4(c + 15) >> 6);
+  crypto_int64 c7 = 2097151 & (load_3(c + 18) >> 3);
+  crypto_int64 c8 = 2097151 & load_3(c + 21);
+  crypto_int64 c9 = 2097151 & (load_4(c + 23) >> 5);
+  crypto_int64 c10 = 2097151 & (load_3(c + 26) >> 2);
+  crypto_int64 c11 = (load_4(c + 28) >> 7);
+  crypto_int64 s0;
+  crypto_int64 s1;
+  crypto_int64 s2;
+  crypto_int64 s3;
+  crypto_int64 s4;
+  crypto_int64 s5;
+  crypto_int64 s6;
+  crypto_int64 s7;
+  crypto_int64 s8;
+  crypto_int64 s9;
+  crypto_int64 s10;
+  crypto_int64 s11;
+  crypto_int64 s12;
+  crypto_int64 s13;
+  crypto_int64 s14;
+  crypto_int64 s15;
+  crypto_int64 s16;
+  crypto_int64 s17;
+  crypto_int64 s18;
+  crypto_int64 s19;
+  crypto_int64 s20;
+  crypto_int64 s21;
+  crypto_int64 s22;
+  crypto_int64 s23;
+  crypto_int64 carry0;
+  crypto_int64 carry1;
+  crypto_int64 carry2;
+  crypto_int64 carry3;
+  crypto_int64 carry4;
+  crypto_int64 carry5;
+  crypto_int64 carry6;
+  crypto_int64 carry7;
+  crypto_int64 carry8;
+  crypto_int64 carry9;
+  crypto_int64 carry10;
+  crypto_int64 carry11;
+  crypto_int64 carry12;
+  crypto_int64 carry13;
+  crypto_int64 carry14;
+  crypto_int64 carry15;
+  crypto_int64 carry16;
+  crypto_int64 carry17;
+  crypto_int64 carry18;
+  crypto_int64 carry19;
+  crypto_int64 carry20;
+  crypto_int64 carry21;
+  crypto_int64 carry22;
+
+  s0 = c0 + a0*b0;
+  s1 = c1 + a0*b1 + a1*b0;
+  s2 = c2 + a0*b2 + a1*b1 + a2*b0;
+  s3 = c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0;
+  s4 = c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0;
+  s5 = c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0;
+  s6 = c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0;
+  s7 = c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0;
+  s8 = c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0;
+  s9 = c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0;
+  s10 = c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0;
+  s11 = c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0;
+  s12 = a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1;
+  s13 = a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2;
+  s14 = a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3;
+  s15 = a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4;
+  s16 = a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5;
+  s17 = a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6;
+  s18 = a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7;
+  s19 = a8*b11 + a9*b10 + a10*b9 + a11*b8;
+  s20 = a9*b11 + a10*b10 + a11*b9;
+  s21 = a10*b11 + a11*b10;
+  s22 = a11*b11;
+  s23 = 0;
+
+  carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+  carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21;
+  carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21;
+  carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21;
+  carry18 = (s18 + (1<<20)) >> 21; s19 += carry18; s18 -= carry18 << 21;
+  carry20 = (s20 + (1<<20)) >> 21; s21 += carry20; s20 -= carry20 << 21;
+  carry22 = (s22 + (1<<20)) >> 21; s23 += carry22; s22 -= carry22 << 21;
+
+  carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+  carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21;
+  carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21;
+  carry17 = (s17 + (1<<20)) >> 21; s18 += carry17; s17 -= carry17 << 21;
+  carry19 = (s19 + (1<<20)) >> 21; s20 += carry19; s19 -= carry19 << 21;
+  carry21 = (s21 + (1<<20)) >> 21; s22 += carry21; s21 -= carry21 << 21;
+
+  s11 += s23 * 666643;
+  s12 += s23 * 470296;
+  s13 += s23 * 654183;
+  s14 -= s23 * 997805;
+  s15 += s23 * 136657;
+  s16 -= s23 * 683901;
+  s23 = 0;
+
+  s10 += s22 * 666643;
+  s11 += s22 * 470296;
+  s12 += s22 * 654183;
+  s13 -= s22 * 997805;
+  s14 += s22 * 136657;
+  s15 -= s22 * 683901;
+  s22 = 0;
+
+  s9 += s21 * 666643;
+  s10 += s21 * 470296;
+  s11 += s21 * 654183;
+  s12 -= s21 * 997805;
+  s13 += s21 * 136657;
+  s14 -= s21 * 683901;
+  s21 = 0;
+
+  s8 += s20 * 666643;
+  s9 += s20 * 470296;
+  s10 += s20 * 654183;
+  s11 -= s20 * 997805;
+  s12 += s20 * 136657;
+  s13 -= s20 * 683901;
+  s20 = 0;
+
+  s7 += s19 * 666643;
+  s8 += s19 * 470296;
+  s9 += s19 * 654183;
+  s10 -= s19 * 997805;
+  s11 += s19 * 136657;
+  s12 -= s19 * 683901;
+  s19 = 0;
+
+  s6 += s18 * 666643;
+  s7 += s18 * 470296;
+  s8 += s18 * 654183;
+  s9 -= s18 * 997805;
+  s10 += s18 * 136657;
+  s11 -= s18 * 683901;
+  s18 = 0;
+
+  carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+  carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21;
+  carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21;
+  carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21;
+
+  carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+  carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21;
+  carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21;
+
+  s5 += s17 * 666643;
+  s6 += s17 * 470296;
+  s7 += s17 * 654183;
+  s8 -= s17 * 997805;
+  s9 += s17 * 136657;
+  s10 -= s17 * 683901;
+  s17 = 0;
+
+  s4 += s16 * 666643;
+  s5 += s16 * 470296;
+  s6 += s16 * 654183;
+  s7 -= s16 * 997805;
+  s8 += s16 * 136657;
+  s9 -= s16 * 683901;
+  s16 = 0;
+
+  s3 += s15 * 666643;
+  s4 += s15 * 470296;
+  s5 += s15 * 654183;
+  s6 -= s15 * 997805;
+  s7 += s15 * 136657;
+  s8 -= s15 * 683901;
+  s15 = 0;
+
+  s2 += s14 * 666643;
+  s3 += s14 * 470296;
+  s4 += s14 * 654183;
+  s5 -= s14 * 997805;
+  s6 += s14 * 136657;
+  s7 -= s14 * 683901;
+  s14 = 0;
+
+  s1 += s13 * 666643;
+  s2 += s13 * 470296;
+  s3 += s13 * 654183;
+  s4 -= s13 * 997805;
+  s5 += s13 * 136657;
+  s6 -= s13 * 683901;
+  s13 = 0;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+  carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+  carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+  s[0] = s0 >> 0;
+  s[1] = s0 >> 8;
+  s[2] = (s0 >> 16) | (s1 << 5);
+  s[3] = s1 >> 3;
+  s[4] = s1 >> 11;
+  s[5] = (s1 >> 19) | (s2 << 2);
+  s[6] = s2 >> 6;
+  s[7] = (s2 >> 14) | (s3 << 7);
+  s[8] = s3 >> 1;
+  s[9] = s3 >> 9;
+  s[10] = (s3 >> 17) | (s4 << 4);
+  s[11] = s4 >> 4;
+  s[12] = s4 >> 12;
+  s[13] = (s4 >> 20) | (s5 << 1);
+  s[14] = s5 >> 7;
+  s[15] = (s5 >> 15) | (s6 << 6);
+  s[16] = s6 >> 2;
+  s[17] = s6 >> 10;
+  s[18] = (s6 >> 18) | (s7 << 3);
+  s[19] = s7 >> 5;
+  s[20] = s7 >> 13;
+  s[21] = s8 >> 0;
+  s[22] = s8 >> 8;
+  s[23] = (s8 >> 16) | (s9 << 5);
+  s[24] = s9 >> 3;
+  s[25] = s9 >> 11;
+  s[26] = (s9 >> 19) | (s10 << 2);
+  s[27] = s10 >> 6;
+  s[28] = (s10 >> 14) | (s11 << 7);
+  s[29] = s11 >> 1;
+  s[30] = s11 >> 9;
+  s[31] = s11 >> 17;
+}
diff --git a/libmariadb/plugins/auth/ref10/sc_reduce.c b/libmariadb/plugins/auth/ref10/sc_reduce.c
new file mode 100644
index 00000000..d01f5a57
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/sc_reduce.c
@@ -0,0 +1,275 @@
+#include "sc.h"
+#include "crypto_int64.h"
+#include "crypto_uint32.h"
+#include "crypto_uint64.h"
+
+static crypto_uint64 load_3(const unsigned char *in)
+{
+  crypto_uint64 result;
+  result = (crypto_uint64) in[0];
+  result |= ((crypto_uint64) in[1]) << 8;
+  result |= ((crypto_uint64) in[2]) << 16;
+  return result;
+}
+
+static crypto_uint64 load_4(const unsigned char *in)
+{
+  crypto_uint64 result;
+  result = (crypto_uint64) in[0];
+  result |= ((crypto_uint64) in[1]) << 8;
+  result |= ((crypto_uint64) in[2]) << 16;
+  result |= ((crypto_uint64) in[3]) << 24;
+  return result;
+}
+
+/*
+Input:
+  s[0]+256*s[1]+...+256^63*s[63] = s
+
+Output:
+  s[0]+256*s[1]+...+256^31*s[31] = s mod l
+  where l = 2^252 + 27742317777372353535851937790883648493.
+  Overwrites s in place.
+*/
+
+void sc_reduce(unsigned char *s)
+{
+  crypto_int64 s0 = 2097151 & load_3(s);
+  crypto_int64 s1 = 2097151 & (load_4(s + 2) >> 5);
+  crypto_int64 s2 = 2097151 & (load_3(s + 5) >> 2);
+  crypto_int64 s3 = 2097151 & (load_4(s + 7) >> 7);
+  crypto_int64 s4 = 2097151 & (load_4(s + 10) >> 4);
+  crypto_int64 s5 = 2097151 & (load_3(s + 13) >> 1);
+  crypto_int64 s6 = 2097151 & (load_4(s + 15) >> 6);
+  crypto_int64 s7 = 2097151 & (load_3(s + 18) >> 3);
+  crypto_int64 s8 = 2097151 & load_3(s + 21);
+  crypto_int64 s9 = 2097151 & (load_4(s + 23) >> 5);
+  crypto_int64 s10 = 2097151 & (load_3(s + 26) >> 2);
+  crypto_int64 s11 = 2097151 & (load_4(s + 28) >> 7);
+  crypto_int64 s12 = 2097151 & (load_4(s + 31) >> 4);
+  crypto_int64 s13 = 2097151 & (load_3(s + 34) >> 1);
+  crypto_int64 s14 = 2097151 & (load_4(s + 36) >> 6);
+  crypto_int64 s15 = 2097151 & (load_3(s + 39) >> 3);
+  crypto_int64 s16 = 2097151 & load_3(s + 42);
+  crypto_int64 s17 = 2097151 & (load_4(s + 44) >> 5);
+  crypto_int64 s18 = 2097151 & (load_3(s + 47) >> 2);
+  crypto_int64 s19 = 2097151 & (load_4(s + 49) >> 7);
+  crypto_int64 s20 = 2097151 & (load_4(s + 52) >> 4);
+  crypto_int64 s21 = 2097151 & (load_3(s + 55) >> 1);
+  crypto_int64 s22 = 2097151 & (load_4(s + 57) >> 6);
+  crypto_int64 s23 = (load_4(s + 60) >> 3);
+  crypto_int64 carry0;
+  crypto_int64 carry1;
+  crypto_int64 carry2;
+  crypto_int64 carry3;
+  crypto_int64 carry4;
+  crypto_int64 carry5;
+  crypto_int64 carry6;
+  crypto_int64 carry7;
+  crypto_int64 carry8;
+  crypto_int64 carry9;
+  crypto_int64 carry10;
+  crypto_int64 carry11;
+  crypto_int64 carry12;
+  crypto_int64 carry13;
+  crypto_int64 carry14;
+  crypto_int64 carry15;
+  crypto_int64 carry16;
+
+  s11 += s23 * 666643;
+  s12 += s23 * 470296;
+  s13 += s23 * 654183;
+  s14 -= s23 * 997805;
+  s15 += s23 * 136657;
+  s16 -= s23 * 683901;
+  s23 = 0;
+
+  s10 += s22 * 666643;
+  s11 += s22 * 470296;
+  s12 += s22 * 654183;
+  s13 -= s22 * 997805;
+  s14 += s22 * 136657;
+  s15 -= s22 * 683901;
+  s22 = 0;
+
+  s9 += s21 * 666643;
+  s10 += s21 * 470296;
+  s11 += s21 * 654183;
+  s12 -= s21 * 997805;
+  s13 += s21 * 136657;
+  s14 -= s21 * 683901;
+  s21 = 0;
+
+  s8 += s20 * 666643;
+  s9 += s20 * 470296;
+  s10 += s20 * 654183;
+  s11 -= s20 * 997805;
+  s12 += s20 * 136657;
+  s13 -= s20 * 683901;
+  s20 = 0;
+
+  s7 += s19 * 666643;
+  s8 += s19 * 470296;
+  s9 += s19 * 654183;
+  s10 -= s19 * 997805;
+  s11 += s19 * 136657;
+  s12 -= s19 * 683901;
+  s19 = 0;
+
+  s6 += s18 * 666643;
+  s7 += s18 * 470296;
+  s8 += s18 * 654183;
+  s9 -= s18 * 997805;
+  s10 += s18 * 136657;
+  s11 -= s18 * 683901;
+  s18 = 0;
+
+  carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+  carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21;
+  carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21;
+  carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21;
+
+  carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+  carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21;
+  carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21;
+
+  s5 += s17 * 666643;
+  s6 += s17 * 470296;
+  s7 += s17 * 654183;
+  s8 -= s17 * 997805;
+  s9 += s17 * 136657;
+  s10 -= s17 * 683901;
+  s17 = 0;
+
+  s4 += s16 * 666643;
+  s5 += s16 * 470296;
+  s6 += s16 * 654183;
+  s7 -= s16 * 997805;
+  s8 += s16 * 136657;
+  s9 -= s16 * 683901;
+  s16 = 0;
+
+  s3 += s15 * 666643;
+  s4 += s15 * 470296;
+  s5 += s15 * 654183;
+  s6 -= s15 * 997805;
+  s7 += s15 * 136657;
+  s8 -= s15 * 683901;
+  s15 = 0;
+
+  s2 += s14 * 666643;
+  s3 += s14 * 470296;
+  s4 += s14 * 654183;
+  s5 -= s14 * 997805;
+  s6 += s14 * 136657;
+  s7 -= s14 * 683901;
+  s14 = 0;
+
+  s1 += s13 * 666643;
+  s2 += s13 * 470296;
+  s3 += s13 * 654183;
+  s4 -= s13 * 997805;
+  s5 += s13 * 136657;
+  s6 -= s13 * 683901;
+  s13 = 0;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+  carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+  carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+  carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+  carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+  carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+  carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+  carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+  carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+  carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+  carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+  carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+  carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+  s[0] = s0 >> 0;
+  s[1] = s0 >> 8;
+  s[2] = (s0 >> 16) | (s1 << 5);
+  s[3] = s1 >> 3;
+  s[4] = s1 >> 11;
+  s[5] = (s1 >> 19) | (s2 << 2);
+  s[6] = s2 >> 6;
+  s[7] = (s2 >> 14) | (s3 << 7);
+  s[8] = s3 >> 1;
+  s[9] = s3 >> 9;
+  s[10] = (s3 >> 17) | (s4 << 4);
+  s[11] = s4 >> 4;
+  s[12] = s4 >> 12;
+  s[13] = (s4 >> 20) | (s5 << 1);
+  s[14] = s5 >> 7;
+  s[15] = (s5 >> 15) | (s6 << 6);
+  s[16] = s6 >> 2;
+  s[17] = s6 >> 10;
+  s[18] = (s6 >> 18) | (s7 << 3);
+  s[19] = s7 >> 5;
+  s[20] = s7 >> 13;
+  s[21] = s8 >> 0;
+  s[22] = s8 >> 8;
+  s[23] = (s8 >> 16) | (s9 << 5);
+  s[24] = s9 >> 3;
+  s[25] = s9 >> 11;
+  s[26] = (s9 >> 19) | (s10 << 2);
+  s[27] = s10 >> 6;
+  s[28] = (s10 >> 14) | (s11 << 7);
+  s[29] = s11 >> 1;
+  s[30] = s11 >> 9;
+  s[31] = s11 >> 17;
+}
diff --git a/libmariadb/plugins/auth/ref10/sign.c b/libmariadb/plugins/auth/ref10/sign.c
new file mode 100644
index 00000000..b4153201
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/sign.c
@@ -0,0 +1,39 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "ge.h"
+#include "sc.h"
+
+int ma_crypto_sign(
+  unsigned char *sm,
+  const unsigned char *m,unsigned long long mlen,
+  const unsigned char *pw,unsigned long long pwlen
+)
+{
+  unsigned char az[64];
+  unsigned char nonce[64];
+  unsigned char hram[64];
+  ge_p3 A, R;
+
+  crypto_hash_sha512(az,pw,pwlen);
+  az[0] &= 248;
+  az[31] &= 63;
+  az[31] |= 64;
+
+  memmove(sm + 64,m,mlen);
+  memmove(sm + 32,az + 32,32);
+  crypto_hash_sha512(nonce,sm + 32,mlen + 32);
+
+  ge_scalarmult_base(&A,az);
+  ge_p3_tobytes(sm + 32,&A);
+
+  sc_reduce(nonce);
+  ge_scalarmult_base(&R,nonce);
+  ge_p3_tobytes(sm,&R);
+
+  crypto_hash_sha512(hram,sm,mlen + 64);
+  sc_reduce(hram);
+  sc_muladd(sm + 32,hram,az,nonce);
+
+  return 0;
+}
diff --git a/libmariadb/plugins/auth/ref10/sqrtm1.h b/libmariadb/plugins/auth/ref10/sqrtm1.h
new file mode 100644
index 00000000..d8caa23b
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/sqrtm1.h
@@ -0,0 +1 @@
+-32595792,-7943725,9377950,3500415,12389472,-272473,-25146209,-2005654,326686,11406482
diff --git a/libmariadb/plugins/auth/ref10/verify.c b/libmariadb/plugins/auth/ref10/verify.c
new file mode 100644
index 00000000..a0e23afe
--- /dev/null
+++ b/libmariadb/plugins/auth/ref10/verify.c
@@ -0,0 +1,40 @@
+#include "crypto_verify.h"
+
+int crypto_verify(const unsigned char *x,const unsigned char *y)
+{
+  unsigned int differentbits = 0;
+#define F(i) differentbits |= x[i] ^ y[i];
+  F(0)
+  F(1)
+  F(2)
+  F(3)
+  F(4)
+  F(5)
+  F(6)
+  F(7)
+  F(8)
+  F(9)
+  F(10)
+  F(11)
+  F(12)
+  F(13)
+  F(14)
+  F(15)
+  F(16)
+  F(17)
+  F(18)
+  F(19)
+  F(20)
+  F(21)
+  F(22)
+  F(23)
+  F(24)
+  F(25)
+  F(26)
+  F(27)
+  F(28)
+  F(29)
+  F(30)
+  F(31)
+  return (1 & ((differentbits - 1) >> 8)) - 1;
+}
diff --git a/libmariadb/plugins/auth/server_plugin.h b/libmariadb/plugins/auth/server_plugin.h
new file mode 100644
index 00000000..1348835e
--- /dev/null
+++ b/libmariadb/plugins/auth/server_plugin.h
@@ -0,0 +1,51 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+/* Plugin variables*/
+#include <mysql/plugin_auth.h>
+typedef enum
+{
+  PLUGIN_MECH_KERBEROS = 0,
+  PLUGIN_MECH_SPNEGO   = 1,
+  PLUGIN_MECH_DEFAULT  = 2
+}PLUGIN_MECH;
+
+extern unsigned long srv_mech;
+extern char *srv_principal_name;
+extern char *srv_mech_name;
+extern char *srv_keytab_path;
+/*
+  Check, with GSSAPI/SSPI username of logged on user.
+
+  Depending on use_full_name parameter, compare either full name
+  (principal name like user@real), or local name (first component)
+*/
+int plugin_init();
+int plugin_deinit();
+
+int auth_server(MYSQL_PLUGIN_VIO *vio, const char *username, size_t  username_len, int use_full_name);
diff --git a/libmariadb/plugins/auth/sha256_pw.c b/libmariadb/plugins/auth/sha256_pw.c
new file mode 100644
index 00000000..3e22fb5c
--- /dev/null
+++ b/libmariadb/plugins/auth/sha256_pw.c
@@ -0,0 +1,336 @@
+/************************************************************************************
+  Copyright (C) 2017 MariaDB Corporation AB
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public
+  License along with this library; if not see <http://www.gnu.org/licenses>
+  or write to the Free Software Foundation, Inc.,
+  51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+ *************************************************************************************/
+#ifndef _WIN32
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef _WIN32
+#undef HAVE_GNUTLS
+#undef HAVE_OPENSSL
+#define HAVE_WINCRYPT
+#endif
+
+#if defined(HAVE_OPENSSL) || defined(HAVE_WINCRYPT)
+
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+#include <errmsg.h>
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <ma_common.h>
+
+#ifndef WIN32
+#include <dlfcn.h>
+#endif
+
+#if defined(WIN32)
+#include <wincrypt.h>
+#elif defined(HAVE_OPENSSL)
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+#endif
+
+#define MAX_PW_LEN 1024
+
+/* function prototypes */
+static int auth_sha256_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql);
+static int auth_sha256_init(char *unused1,
+    size_t unused2,
+    int unused3,
+    va_list);
+
+
+#ifndef PLUGIN_DYNAMIC
+struct st_mysql_client_plugin_AUTHENTICATION sha256_password_client_plugin=
+#else
+struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
+#endif
+{
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN,
+  MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
+  "sha256_password",
+  "Georg Richter",
+  "SHA256 Authentication Plugin",
+  {0,1,0},
+  "LGPL",
+  NULL,
+  auth_sha256_init,
+  NULL,
+  NULL,
+  auth_sha256_client
+};
+
+#ifdef HAVE_WINCRYPT
+static LPBYTE ma_load_pem(const char *buffer, DWORD *buffer_len)
+{
+  LPBYTE der_buffer= NULL;
+  DWORD der_buffer_length= 0;
+
+  if (buffer_len == NULL || *buffer_len == 0)
+    return NULL;
+  /* calculate the length of DER binary */
+  if (!CryptStringToBinaryA(buffer, *buffer_len, CRYPT_STRING_BASE64HEADER,
+        NULL, &der_buffer_length, NULL, NULL))
+    goto end;
+  /* allocate DER binary buffer */
+  if (!(der_buffer= (LPBYTE)LocalAlloc(0, der_buffer_length)))
+    goto end;
+  /* convert to DER binary */
+  if (!CryptStringToBinaryA(buffer, *buffer_len, CRYPT_STRING_BASE64HEADER,
+        der_buffer, &der_buffer_length, NULL, NULL))
+    goto end;
+
+  *buffer_len= der_buffer_length;
+
+  return der_buffer;
+
+end:
+  if (der_buffer)
+    LocalFree(der_buffer);
+  *buffer_len= 0;
+  return NULL;
+}
+#endif
+
+static char *load_pub_key_file(const char *filename, int *pub_key_size)
+{
+  FILE *fp= NULL;
+  char *buffer= NULL;
+  unsigned char error= 1;
+  size_t bytes_read= 0;
+  long fsize= 0;
+
+  if (!pub_key_size)
+    return NULL;
+
+  if (!(fp= fopen(filename, "r")))
+    goto end;
+
+  if (fseek(fp, 0, SEEK_END))
+    goto end;
+
+  fsize= ftell(fp);
+  if (fsize < 0)
+    goto end;
+
+  rewind(fp);
+
+  if (!(buffer= malloc(fsize + 1)))
+    goto end;
+
+  bytes_read= fread(buffer, 1, (size_t)fsize, fp);
+  if (bytes_read < (size_t)fsize)
+    goto end;
+
+  *pub_key_size= (int)bytes_read;
+
+  error= 0;
+
+end:
+  if (fp)
+    fclose(fp);
+  if (error && buffer)
+  {
+    free(buffer);
+    buffer= NULL;
+  }
+  return buffer;
+}
+
+
+static int auth_sha256_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
+{
+  unsigned char *packet;
+  int packet_length;
+  int rc= CR_ERROR;
+  char passwd[MAX_PW_LEN];
+  unsigned char rsa_enc_pw[MAX_PW_LEN];
+  unsigned int rsa_size;
+  unsigned int pwlen, i;
+
+#if defined(HAVE_OPENSSL)
+  RSA *pubkey= NULL;
+  BIO *bio;
+#elif defined(HAVE_WINCRYPT)
+  HCRYPTKEY pubkey= 0;
+  HCRYPTPROV hProv= 0;
+  LPBYTE der_buffer= NULL;
+  DWORD der_buffer_len= 0;
+  CERT_PUBLIC_KEY_INFO *publicKeyInfo= NULL;
+  DWORD ParamSize= sizeof(DWORD);
+  int publicKeyInfoLen= 0;
+#endif
+  char *filebuffer= NULL;
+
+  /* read error */
+  if ((packet_length= vio->read_packet(vio, &packet)) < 0)
+    return CR_ERROR;
+
+  if (packet_length != SCRAMBLE_LENGTH + 1)
+    return CR_SERVER_HANDSHAKE_ERR;
+
+  memmove(mysql->scramble_buff, packet, SCRAMBLE_LENGTH);
+  mysql->scramble_buff[SCRAMBLE_LENGTH]= 0;
+
+  /* if a tls session is active we need to send plain password */
+  if (mysql->client_flag & CLIENT_SSL)
+  {
+    if (vio->write_packet(vio, (unsigned char *)mysql->passwd, (int)strlen(mysql->passwd) + 1))
+      return CR_ERROR;
+    return CR_OK;
+  }
+
+  /* send empty packet if no password was provided */
+  if (!mysql->passwd || !mysql->passwd[0])
+  {
+    if (vio->write_packet(vio, 0, 0))
+      return CR_ERROR;
+    return CR_OK;
+  }
+
+  /* read public key file (if specified) */
+  if (mysql->options.extension &&
+      mysql->options.extension->server_public_key)
+  {
+    filebuffer= load_pub_key_file(mysql->options.extension->server_public_key,
+                             &packet_length);
+  }
+
+  /* if no public key file was specified or if we couldn't read the file,
+     we ask server to send public key */
+  if (!filebuffer)
+  {
+    unsigned char buf= 1;
+    if (vio->write_packet(vio, &buf, 1))
+      return CR_ERROR;
+    if ((packet_length=vio->read_packet(vio, &packet)) == -1)
+      return CR_ERROR;
+  }
+#if defined(HAVE_OPENSSL)
+  bio= BIO_new_mem_buf(filebuffer ? (unsigned char *)filebuffer : packet,
+                       packet_length);
+  if ((pubkey= PEM_read_bio_RSA_PUBKEY(bio, NULL, NULL, NULL)))
+    rsa_size= RSA_size(pubkey);
+  BIO_free(bio);
+  ERR_clear_error();
+#elif defined(HAVE_WINCRYPT)
+  der_buffer_len= packet_length;
+  /* Load pem and convert it to binary object. New length will be returned
+     in der_buffer_len */
+  if (!(der_buffer= ma_load_pem(filebuffer ? filebuffer : (char *)packet, &der_buffer_len)))
+    goto error;
+
+  /* Create context and load public key */
+  if (!CryptDecodeObjectEx(X509_ASN_ENCODING, X509_PUBLIC_KEY_INFO,
+                           der_buffer, der_buffer_len,
+                           CRYPT_DECODE_ALLOC_FLAG, NULL,
+                           &publicKeyInfo, (DWORD *)&publicKeyInfoLen))
+    goto error;
+  LocalFree(der_buffer);
+
+  if (!CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_FULL, 
+                           CRYPT_VERIFYCONTEXT))
+    goto error;
+  if (!CryptImportPublicKeyInfo(hProv, X509_ASN_ENCODING,
+                                publicKeyInfo, &pubkey))
+    goto error;
+
+  /* Get rsa_size */
+  CryptGetKeyParam(pubkey, KP_KEYLEN, (BYTE *)&rsa_size, &ParamSize, 0);
+  rsa_size /= 8;
+#endif
+  if (!pubkey)
+    return CR_ERROR;
+
+  pwlen= (unsigned int)strlen(mysql->passwd) + 1;  /* include terminating zero */
+  if (pwlen > MAX_PW_LEN)
+    goto error;
+  memcpy(passwd, mysql->passwd, pwlen);
+
+  /* xor password with scramble */
+  for (i=0; i < pwlen; i++)
+    passwd[i]^= *(mysql->scramble_buff + i % SCRAMBLE_LENGTH);
+
+  /* encrypt scrambled password */
+#if defined(HAVE_OPENSSL)
+  if (RSA_public_encrypt(pwlen, (unsigned char *)passwd, rsa_enc_pw, pubkey, RSA_PKCS1_OAEP_PADDING) < 0)
+    goto error;
+#elif defined(HAVE_WINCRYPT)
+  if (!CryptEncrypt(pubkey, 0, TRUE, CRYPT_OAEP, (BYTE *)passwd, (DWORD *)&pwlen, MAX_PW_LEN))
+    goto error;
+  /* Windows encrypts as little-endian, while server (openssl) expects
+     big-endian, so we have to revert the string */
+  for (i= 0; i < rsa_size / 2; i++)
+  {
+    rsa_enc_pw[i]= passwd[rsa_size - 1 - i];
+    rsa_enc_pw[rsa_size - 1 - i]= passwd[i];
+  }
+#endif
+  if (vio->write_packet(vio, rsa_enc_pw, rsa_size))
+    goto error;
+
+  rc= CR_OK;
+error:
+#if defined(HAVE_OPENSSL)
+  if (pubkey)
+    RSA_free(pubkey);
+#elif defined(HAVE_WINCRYPT)
+  CryptReleaseContext(hProv, 0);
+  if (publicKeyInfo)
+    LocalFree(publicKeyInfo);
+#endif
+  free(filebuffer);
+  return rc;
+}
+/* }}} */
+
+/* {{{ static int auth_sha256_init */
+/*
+   Initialization routine
+
+   SYNOPSIS
+   auth_sha256_init
+   unused1
+   unused2
+   unused3
+   unused4
+
+   DESCRIPTION
+   Init function checks if the caller provides own dialog function.
+   The function name must be mariadb_auth_dialog or
+   mysql_authentication_dialog_ask. If the function cannot be found,
+   we will use owr own simple command line input.
+
+   RETURN
+   0           success
+ */
+static int auth_sha256_init(char *unused1 __attribute__((unused)), 
+    size_t unused2  __attribute__((unused)), 
+    int unused3     __attribute__((unused)), 
+    va_list unused4 __attribute__((unused)))
+{
+  return 0;
+}
+/* }}} */
+
+#endif  /* defined(HAVE_OPENSSL) || defined(HAVE_WINCRYPT) */
diff --git a/libmariadb/plugins/auth/sspi_client.c b/libmariadb/plugins/auth/sspi_client.c
new file mode 100644
index 00000000..e257cd9d
--- /dev/null
+++ b/libmariadb/plugins/auth/sspi_client.c
@@ -0,0 +1,184 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+#define SECURITY_WIN32
+#include <windows.h>
+#include <sspi.h>
+#include <secext.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <mysql/plugin_auth.h>
+#include <mysql.h>
+#include <ma_server_error.h>
+
+#include "sspi_common.h"
+
+extern void log_client_error(MYSQL *mysql, const char *fmt, ...);
+static void log_error(MYSQL *mysql, SECURITY_STATUS err, const char *msg)
+{
+  if (err)
+  {
+    char buf[1024];
+    sspi_errmsg(err, buf, sizeof(buf));
+    log_client_error(mysql, "SSPI client error 0x%x - %s - %s", err, msg, buf);
+  }
+  else
+  {
+    log_client_error(mysql, "SSPI client error %s", msg);
+  }
+}
+
+
+/** Client side authentication*/
+int auth_client(char *principal_name, char *mech, MYSQL *mysql, MYSQL_PLUGIN_VIO *vio)
+{
+
+  int ret;
+  CredHandle cred;
+  CtxtHandle ctxt;
+  ULONG attribs = 0;
+  TimeStamp lifetime;
+  SECURITY_STATUS sspi_err;
+
+  SecBufferDesc inbuf_desc;
+  SecBuffer     inbuf;
+  SecBufferDesc outbuf_desc;
+  SecBuffer     outbuf;
+  PBYTE         out = NULL;
+
+  ret= CR_ERROR;
+  SecInvalidateHandle(&ctxt);
+  SecInvalidateHandle(&cred);
+
+  if (!mech || strcmp(mech, "Negotiate") != 0)
+  {
+    mech= (char *)"Kerberos";
+  }
+
+  sspi_err = AcquireCredentialsHandle(
+    NULL,
+    mech,
+    SECPKG_CRED_OUTBOUND,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    &cred,
+    &lifetime);
+
+  if (SEC_ERROR(sspi_err))
+  {
+    log_error(mysql, sspi_err, "AcquireCredentialsHandle");
+    return CR_ERROR;
+  }
+
+  out = (PBYTE)malloc(SSPI_MAX_TOKEN_SIZE);
+  if (!out)
+  {
+    log_error(mysql, SEC_E_OK, "memory allocation error");
+    goto cleanup;
+  }
+
+  /* Prepare buffers */
+  inbuf_desc.ulVersion = SECBUFFER_VERSION;
+  inbuf_desc.cBuffers = 1;
+  inbuf_desc.pBuffers = &inbuf;
+  inbuf.BufferType = SECBUFFER_TOKEN;
+  inbuf.cbBuffer = 0;
+  inbuf.pvBuffer = NULL;
+
+  outbuf_desc.ulVersion = SECBUFFER_VERSION;
+  outbuf_desc.cBuffers = 1;
+  outbuf_desc.pBuffers = &outbuf;
+  outbuf.BufferType = SECBUFFER_TOKEN;
+  outbuf.pvBuffer = out;
+
+  do
+  {
+    outbuf.cbBuffer= SSPI_MAX_TOKEN_SIZE;
+    sspi_err= InitializeSecurityContext(
+      &cred,
+      SecIsValidHandle(&ctxt) ? &ctxt : NULL,
+      principal_name,
+      0,
+      0,
+      SECURITY_NATIVE_DREP,
+      inbuf.cbBuffer ? &inbuf_desc : NULL,
+      0,
+      &ctxt,
+      &outbuf_desc,
+      &attribs,
+      &lifetime);
+    if (SEC_ERROR(sspi_err))
+    {
+      log_error(mysql, sspi_err, "InitializeSecurityContext");
+      goto cleanup;
+    }
+    if (sspi_err != SEC_E_OK && sspi_err != SEC_I_CONTINUE_NEEDED)
+    {
+      log_error(mysql, sspi_err, "Unexpected response from InitializeSecurityContext");
+      goto cleanup;
+    }
+
+    if (outbuf.cbBuffer)
+    {
+      /* send credential to server */
+      if (vio->write_packet(vio, (unsigned char *)outbuf.pvBuffer, outbuf.cbBuffer))
+      {
+        /* Server error packet contains detailed message. */
+        ret= CR_OK_HANDSHAKE_COMPLETE;
+        goto cleanup;
+      }
+    }
+
+    if (sspi_err == SEC_I_CONTINUE_NEEDED)
+    {
+      int len= vio->read_packet(vio, (unsigned char **)&inbuf.pvBuffer);
+      if (len <= 0)
+      {
+        /* Server side error is in the last server packet. */
+        ret= CR_OK_HANDSHAKE_COMPLETE;
+        goto cleanup;
+      }
+      inbuf.cbBuffer= len;
+    }
+  } while (sspi_err == SEC_I_CONTINUE_NEEDED);
+
+  ret= CR_OK;
+
+cleanup:
+
+  if (SecIsValidHandle(&ctxt))
+    DeleteSecurityContext(&ctxt);
+  if (SecIsValidHandle(&cred))
+    FreeCredentialsHandle(&cred);
+  free(out);
+  return ret;
+}
diff --git a/libmariadb/plugins/auth/sspi_common.h b/libmariadb/plugins/auth/sspi_common.h
new file mode 100644
index 00000000..da9159eb
--- /dev/null
+++ b/libmariadb/plugins/auth/sspi_common.h
@@ -0,0 +1,38 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+#define SECURITY_WIN32
+#include <windows.h>
+#include <sspi.h>
+#include <secext.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#define SSPI_MAX_TOKEN_SIZE 50000
+#define SEC_ERROR(err) ((err) < 0)
+extern void sspi_errmsg(int err, char *buf, size_t size);
diff --git a/libmariadb/plugins/auth/sspi_errmsg.c b/libmariadb/plugins/auth/sspi_errmsg.c
new file mode 100644
index 00000000..15cb2582
--- /dev/null
+++ b/libmariadb/plugins/auth/sspi_errmsg.c
@@ -0,0 +1,169 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+*/
+
+#include <windows.h>
+#include <stdio.h>
+
+#ifndef SEC_E_INVALID_PARAMETER
+#define SEC_E_INVALID_PARAMETER _HRESULT_TYPEDEF_(0x8009035D)
+#endif
+#ifndef SEC_E_DELEGATION_POLICY
+#define SEC_E_DELEGATION_POLICY _HRESULT_TYPEDEF_(0x8009035E)
+#endif
+#ifndef SEC_E_POLICY_NLTM_ONLY
+#define SEC_E_POLICY_NLTM_ONLY _HRESULT_TYPEDEF_(0x8009035F)
+#endif
+#ifndef SEC_E_NO_CONTEXT
+#define SEC_E_NO_CONTEXT _HRESULT_TYPEDEF_(0x80090361)
+#endif
+#ifndef SEC_E_PKU2U_CERT_FAILURE
+#define SEC_E_PKU2U_CERT_FAILURE _HRESULT_TYPEDEF_(0x80090362)
+#endif
+#ifndef SEC_E_MUTUAL_AUTH_FAILED
+#define SEC_E_MUTUAL_AUTH_FAILED _HRESULT_TYPEDEF_(0x80090363)
+#endif
+
+#define ERRSYM(x) {x, #x}
+static struct {
+  int error;
+  const char *sym;
+} error_symbols[] =
+{
+  ERRSYM(SEC_E_OK),
+  ERRSYM(SEC_E_INSUFFICIENT_MEMORY),
+  ERRSYM(SEC_E_INVALID_HANDLE),
+  ERRSYM(SEC_E_UNSUPPORTED_FUNCTION),
+  ERRSYM(SEC_E_TARGET_UNKNOWN),
+  ERRSYM(SEC_E_INTERNAL_ERROR),
+  ERRSYM(SEC_E_SECPKG_NOT_FOUND),
+  ERRSYM(SEC_E_NOT_OWNER),
+  ERRSYM(SEC_E_CANNOT_INSTALL),
+  ERRSYM(SEC_E_INVALID_TOKEN),
+  ERRSYM(SEC_E_CANNOT_PACK),
+  ERRSYM(SEC_E_QOP_NOT_SUPPORTED),
+  ERRSYM(SEC_E_NO_IMPERSONATION),
+  ERRSYM(SEC_E_LOGON_DENIED),
+  ERRSYM(SEC_E_UNKNOWN_CREDENTIALS),
+  ERRSYM(SEC_E_NO_CREDENTIALS),
+  ERRSYM(SEC_E_MESSAGE_ALTERED),
+  ERRSYM(SEC_E_OUT_OF_SEQUENCE),
+  ERRSYM(SEC_E_NO_AUTHENTICATING_AUTHORITY),
+  ERRSYM(SEC_E_BAD_PKGID),
+  ERRSYM(SEC_E_CONTEXT_EXPIRED),
+  ERRSYM(SEC_E_INCOMPLETE_MESSAGE),
+  ERRSYM(SEC_E_INCOMPLETE_CREDENTIALS),
+  ERRSYM(SEC_E_BUFFER_TOO_SMALL),
+  ERRSYM(SEC_E_WRONG_PRINCIPAL),
+  ERRSYM(SEC_E_TIME_SKEW),
+  ERRSYM(SEC_E_UNTRUSTED_ROOT),
+  ERRSYM(SEC_E_ILLEGAL_MESSAGE),
+  ERRSYM(SEC_E_CERT_UNKNOWN),
+  ERRSYM(SEC_E_CERT_EXPIRED),
+  ERRSYM(SEC_E_ENCRYPT_FAILURE),
+  ERRSYM(SEC_E_DECRYPT_FAILURE),
+  ERRSYM(SEC_E_ALGORITHM_MISMATCH),
+  ERRSYM(SEC_E_SECURITY_QOS_FAILED),
+  ERRSYM(SEC_E_UNFINISHED_CONTEXT_DELETED),
+  ERRSYM(SEC_E_NO_TGT_REPLY),
+  ERRSYM(SEC_E_NO_IP_ADDRESSES),
+  ERRSYM(SEC_E_WRONG_CREDENTIAL_HANDLE),
+  ERRSYM(SEC_E_CRYPTO_SYSTEM_INVALID),
+  ERRSYM(SEC_E_MAX_REFERRALS_EXCEEDED),
+  ERRSYM(SEC_E_MUST_BE_KDC),
+  ERRSYM(SEC_E_STRONG_CRYPTO_NOT_SUPPORTED),
+  ERRSYM(SEC_E_TOO_MANY_PRINCIPALS),
+  ERRSYM(SEC_E_NO_PA_DATA),
+  ERRSYM(SEC_E_PKINIT_NAME_MISMATCH),
+  ERRSYM(SEC_E_SMARTCARD_LOGON_REQUIRED),
+  ERRSYM(SEC_E_SHUTDOWN_IN_PROGRESS),
+  ERRSYM(SEC_E_KDC_INVALID_REQUEST),
+  ERRSYM(SEC_E_KDC_UNABLE_TO_REFER),
+  ERRSYM(SEC_E_KDC_UNKNOWN_ETYPE),
+  ERRSYM(SEC_E_UNSUPPORTED_PREAUTH),
+  ERRSYM(SEC_E_DELEGATION_REQUIRED),
+  ERRSYM(SEC_E_BAD_BINDINGS),
+  ERRSYM(SEC_E_MULTIPLE_ACCOUNTS),
+  ERRSYM(SEC_E_NO_KERB_KEY),
+  ERRSYM(SEC_E_CERT_WRONG_USAGE),
+  ERRSYM(SEC_E_DOWNGRADE_DETECTED),
+  ERRSYM(SEC_E_SMARTCARD_CERT_REVOKED),
+  ERRSYM(SEC_E_ISSUING_CA_UNTRUSTED),
+  ERRSYM(SEC_E_REVOCATION_OFFLINE_C),
+  ERRSYM(SEC_E_PKINIT_CLIENT_FAILURE),
+  ERRSYM(SEC_E_SMARTCARD_CERT_EXPIRED),
+  ERRSYM(SEC_E_NO_S4U_PROT_SUPPORT),
+  ERRSYM(SEC_E_CROSSREALM_DELEGATION_FAILURE),
+  ERRSYM(SEC_E_REVOCATION_OFFLINE_KDC),
+  ERRSYM(SEC_E_ISSUING_CA_UNTRUSTED_KDC),
+  ERRSYM(SEC_E_KDC_CERT_EXPIRED),
+  ERRSYM(SEC_E_KDC_CERT_REVOKED),
+  ERRSYM(SEC_E_INVALID_PARAMETER),
+  ERRSYM(SEC_E_DELEGATION_POLICY),
+  ERRSYM(SEC_E_POLICY_NLTM_ONLY),
+  ERRSYM(SEC_E_NO_CONTEXT),
+  ERRSYM(SEC_E_PKU2U_CERT_FAILURE),
+  ERRSYM(SEC_E_MUTUAL_AUTH_FAILED),
+  ERRSYM(SEC_E_NO_SPM),
+  ERRSYM(SEC_E_NOT_SUPPORTED),
+  {0,0}
+};
+
+void sspi_errmsg(int err, char *buf, size_t size)
+{
+  size_t len,i;
+
+  buf[size - 1] = 0;
+  for (i= 0; error_symbols[i].sym; i++)
+  {
+    if (error_symbols[i].error == err)
+    {
+      size_t len= strlen(error_symbols[i].sym);
+      if (len + 2 < size)
+      {
+        memcpy(buf, error_symbols[i].sym, len);
+        buf[len]= ' ';
+        buf += len + 1;
+        size-= len + 1;
+      }
+      break;
+    }
+  }
+
+  len = FormatMessageA(
+    FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
+    err, MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
+    buf, (DWORD)size, NULL);
+
+  if(len > 0)
+  {
+    /* Trim trailing \n\r*/
+    char *p;
+    for(p= buf + len;p > buf && (*p == '\n' || *p=='\r' || *p == 0);p--)
+      *p= 0;
+  }
+}
diff --git a/libmariadb/plugins/connection/CMakeLists.txt b/libmariadb/plugins/connection/CMakeLists.txt
new file mode 100644
index 00000000..cbfd4633
--- /dev/null
+++ b/libmariadb/plugins/connection/CMakeLists.txt
@@ -0,0 +1,13 @@
+# Aurora
+REGISTER_PLUGIN(TARGET aurora
+                TYPE MARIADB_CLIENT_PLUGIN_CONNECTION
+                CONFIGURATIONS STATIC DYNAMIC OFF
+                DEFAULT OFF
+                SOURCES ${CC_SOURCE_DIR}/plugins/connection/aurora.c)
+
+# Replication
+REGISTER_PLUGIN(TARGET replication
+                TYPE MARIADB_CLIENT_PLUGIN_CONNECTION
+                CONFIGURATIONS STATIC DYNAMIC OFF
+                DEFAULT OFF
+                SOURCES ${CC_SOURCE_DIR}/plugins/connection/replication.c)
diff --git a/libmariadb/plugins/connection/aurora.c b/libmariadb/plugins/connection/aurora.c
new file mode 100644
index 00000000..4b8a52f2
--- /dev/null
+++ b/libmariadb/plugins/connection/aurora.c
@@ -0,0 +1,773 @@
+/************************************************************************************
+  Copyright (C) 2015-2018 MariaDB Corporation AB
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public
+  License along with this library; if not see <http://www.gnu.org/licenses>
+  or write to the Free Software Foundation, Inc., 
+  51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+
+  Part of this code includes code from the PHP project which
+  is freely available from http://www.php.net
+ *************************************************************************************/
+
+/* MariaDB Connection plugin for Aurora failover  */
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <ma_common.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <ma_string.h>
+
+#ifndef WIN32
+#include <sys/time.h>
+#endif
+
+/* function prototypes */
+int aurora_init(char *errormsg __attribute__((unused)),
+    size_t errormsg_size __attribute__((unused)),
+    int unused  __attribute__((unused)), 
+    va_list unused1 __attribute__((unused)));
+
+MYSQL *aurora_connect(MYSQL *mysql, const char *host, const char *user, const char *passwd,
+    const char *db, unsigned int port, const char *unix_socket, unsigned long clientflag);
+void aurora_close(MYSQL *mysql);
+int aurora_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
+    size_t length, my_bool skipp_check, void *opt_arg);
+my_bool aurora_reconnect(MYSQL *mysql);
+
+#define AURORA_MAX_INSTANCES 16
+
+#define AURORA_UNKNOWN -1
+#define AURORA_PRIMARY 0
+#define AURORA_REPLICA 1
+#define AURORA_UNAVAILABLE 2
+
+static struct st_mariadb_api *libmariadb_api= NULL;
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_CONNECTION_PLUGIN aurora_client_plugin =
+#else
+MARIADB_CONNECTION_PLUGIN _mysql_client_plugin_declaration_ =
+#endif
+{
+  MARIADB_CLIENT_CONNECTION_PLUGIN,
+  MARIADB_CLIENT_CONNECTION_PLUGIN_INTERFACE_VERSION,
+  "aurora",
+  "Georg Richter",
+  "MariaDB connection plugin for Aurora failover",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  aurora_init,
+  NULL,
+  NULL,
+  aurora_connect,
+  aurora_close,
+  NULL,
+  aurora_command,
+  aurora_reconnect,
+  NULL
+};
+
+
+typedef struct st_aurora_instance {
+  char *host;
+  unsigned int  port;
+  time_t blacklisted;
+  int type;
+} AURORA_INSTANCE;
+
+typedef struct st_conn_aurora {
+  MYSQL *mysql[2],
+        save_mysql;
+  char *url;
+  unsigned int num_instances;
+  AURORA_INSTANCE instance[AURORA_MAX_INSTANCES];
+  char *username, *password, *database;
+  unsigned int port;
+  unsigned long client_flag;
+  char primary_id[100];
+} AURORA;
+
+#define AURORA_BLACKLIST_TIMEOUT 150
+
+#define AURORA_IS_BLACKLISTED(a, i) \
+  ((time(NULL) - (a)->instance[(i)].blacklisted) < AURORA_BLACKLIST_TIMEOUT)
+
+/* {{{ my_bool aurora_swutch_connection */
+my_bool aurora_switch_connection(MYSQL *mysql, AURORA *aurora, int type)
+{
+  switch (type)
+  {
+    case AURORA_REPLICA:
+      if (aurora->mysql[AURORA_REPLICA])
+      {
+        *mysql= *aurora->mysql[AURORA_REPLICA];
+      }
+      break;
+    case AURORA_PRIMARY:
+      if (aurora->mysql[AURORA_PRIMARY])
+      {
+        *mysql= *aurora->mysql[AURORA_PRIMARY];
+      }
+      break;
+    default:
+      return 1;
+  }
+  return 0;
+}
+/* }}} */
+
+/* {{{ int aurora_init
+ *
+ *     plugin initialization function
+ */
+int aurora_init(char *errormsg __attribute__((unused)),
+    size_t errormsg_size __attribute__((unused)),
+    int unused  __attribute__((unused)), 
+    va_list unused1 __attribute__((unused)))
+{
+  /* random generator initialization */
+#ifndef WIN32
+  struct timeval tp;
+  gettimeofday(&tp,NULL);
+  srand(tp.tv_usec / 1000 + tp.tv_sec * 1000);
+#else
+  srand(GetTickCount());
+#endif
+  return 0;
+}
+/* }}} */
+
+/* {{{ void aurora_close_memory */
+void aurora_close_memory(AURORA *aurora)
+{
+  free(aurora->url);
+  free(aurora->username);
+  free(aurora->password);
+  free(aurora->database);
+  free(aurora);
+}
+/* }}} */
+
+/* {{{ my_bool aurora_parse_url 
+ * 
+ *    parse url
+ *   Url has the following format:
+ *   instance1:port, instance2:port, .., instanceN:port
+ *
+ */
+my_bool aurora_parse_url(const char *url, AURORA *aurora)
+{
+  char *p, *c;
+  unsigned int i;
+
+  if (!url || url[0] == 0)
+    return 1;
+
+  memset(aurora->instance, 0, (AURORA_MAX_INSTANCES + 1) * sizeof(char *));
+  memset(&aurora->port, 0, (AURORA_MAX_INSTANCES + 1) * sizeof(int));
+
+  if (aurora->url)
+    free(aurora->url);
+
+  aurora->url= strdup(url);
+  c= aurora->url;
+
+  /* get instances */ 
+  while((c))
+  {
+    if ((p= strchr(c, ',')))
+    {
+      *p= '\0';
+      p++;
+    }
+    if (*c)
+    {
+      aurora->instance[aurora->num_instances].host= c;
+      aurora->num_instances++;
+    }
+    c= p;
+  }
+
+  if (!aurora->num_instances)
+    return 0;
+
+  /* check ports */
+  for (i=0; i < aurora->num_instances && aurora->instance[i].host; i++)
+  { 
+    aurora->instance[i].type= AURORA_UNKNOWN;
+
+    /* We need to be aware of IPv6 addresses: According to RFC3986 sect. 3.2.2
+       hostnames have to be enclosed in square brackets if a port is given */
+    if (aurora->instance[i].host[0]== '[' && 
+        strchr(aurora->instance[i].host, ':') && 
+        (p= strchr(aurora->instance[i].host,']')))
+    {
+      /* ignore first square bracket */
+      memmove(aurora->instance[i].host, 
+          aurora->instance[i].host+1, 
+          strlen(aurora->instance[i].host) - 1);
+      p= strchr(aurora->instance[i].host,']');
+      *p= 0;
+      p++;
+    }
+    else
+      p= aurora->instance[i].host;
+    if (p && (p= strchr(p, ':')))
+    {
+      *p= '\0';
+      p++;
+      aurora->instance[i].port= atoi(p);
+    }
+  }
+  return 0;
+}
+/* }}} */
+
+/* {{{ int aurora_get_instance_type 
+ *
+ *  RETURNS:
+ *
+ *    AURORA_PRIMARY
+ *    AURORA_REPLICA
+ *    -1 on error
+ */
+int aurora_get_instance_type(MYSQL *mysql)
+{
+  int rc= -1;
+  MA_CONNECTION_HANDLER *save_hdlr= mysql->extension->conn_hdlr;
+
+  const char *query= "select variable_value from information_schema.global_variables where variable_name='INNODB_READ_ONLY' AND variable_value='OFF'";
+
+  if (!mysql)
+    return -1;
+
+  mysql->extension->conn_hdlr= 0;
+  if (!libmariadb_api->mysql_query(mysql, query))
+  {
+    MYSQL_RES *res= libmariadb_api->mysql_store_result(mysql);
+    rc= libmariadb_api->mysql_num_rows(res) ? AURORA_PRIMARY : AURORA_REPLICA;
+    libmariadb_api->mysql_free_result(res);
+  }
+  mysql->extension->conn_hdlr= save_hdlr;
+  return rc;
+}
+/* }}} */
+
+/* {{{ my_bool aurora_get_primary_id 
+ *
+ *   try to find primary instance from slave by retrieving
+ *   primary_id information_schema.replica_host_status information
+ *
+ *   If the function succeeds, primary_id will be copied into
+ *   aurora->primary_id
+ *
+ *   Returns:
+ *     1 on success
+ *     0 if an error occurred or primary_id couldn't be 
+ *       found
+ */
+my_bool aurora_get_primary_id(MYSQL *mysql, AURORA *aurora)
+{
+  my_bool rc= 0;
+  MA_CONNECTION_HANDLER *save_hdlr= mysql->extension->conn_hdlr;
+
+  mysql->extension->conn_hdlr= 0;
+  if (!libmariadb_api->mysql_query(mysql, "select server_id from information_schema.replica_host_status "
+        "where session_id = 'MASTER_SESSION_ID'"))
+  {
+    MYSQL_RES *res;
+    MYSQL_ROW row;
+
+    if ((res= libmariadb_api->mysql_store_result(mysql)))
+    {
+      if ((row= libmariadb_api->mysql_fetch_row(res)))
+      {
+        if (row[0])
+        {
+          strcpy(aurora->primary_id, row[0]);
+          rc= 1;
+        }
+      }
+      libmariadb_api->mysql_free_result(res);
+    }
+  }
+  mysql->extension->conn_hdlr= save_hdlr;
+  return rc;
+}
+/* }}} */
+
+/* {{{ unsigned int aurora_get_valid_instances 
+ *
+ *     returns the number of instances which are
+ *     not blacklisted or don't have a type assigned.
+ */
+static unsigned int aurora_get_valid_instances(AURORA *aurora, AURORA_INSTANCE **instances)
+{
+  unsigned int i, valid_instances= 0;
+
+  memset(instances, 0, sizeof(AURORA_INSTANCE *) * AURORA_MAX_INSTANCES);
+
+  for (i=0; i < aurora->num_instances; i++)
+  {
+    if (aurora->instance[i].type != AURORA_UNAVAILABLE)
+    {
+      if (aurora->instance[i].type == AURORA_PRIMARY && aurora->mysql[AURORA_PRIMARY])
+        continue;
+      instances[valid_instances]= &aurora->instance[i];
+      valid_instances++;
+    }
+  }
+  return valid_instances;
+}
+/* }}} */
+
+/* {{{ void aurora_refresh_blacklist() */
+void aurora_refresh_blacklist(AURORA *aurora)
+{
+  unsigned int i;
+  for (i=0; i < aurora->num_instances; i++)
+  {
+    if (aurora->instance[i].blacklisted &&
+        !(AURORA_IS_BLACKLISTED(aurora, i)))
+    {
+      aurora->instance[i].blacklisted= 0;
+      aurora->instance[i].type= AURORA_UNKNOWN;
+    }
+  }
+}
+/* }}} */
+
+/* {{{ MYSQL *aurora_connect_instance() */
+MYSQL *aurora_connect_instance(AURORA *aurora, AURORA_INSTANCE *instance, MYSQL *mysql)
+{
+  if (!libmariadb_api->mysql_real_connect(mysql,
+        instance->host,
+        aurora->username,
+        aurora->password,
+        aurora->database,
+        instance->port ? instance->port : aurora->port,
+        NULL,
+        aurora->client_flag | CLIENT_REMEMBER_OPTIONS))
+  {
+    /* connection not available */
+    instance->blacklisted= time(NULL);
+    instance->type= AURORA_UNAVAILABLE;
+    return NULL;
+  }
+
+  /* check if we are slave or master */
+  switch (aurora_get_instance_type(mysql))
+  {
+    case AURORA_PRIMARY:
+      instance->type= AURORA_PRIMARY;
+      return mysql;
+      break;
+    case AURORA_REPLICA:
+      instance->type= AURORA_REPLICA;
+      break;
+    default:
+      instance->type= AURORA_UNAVAILABLE;
+      instance->blacklisted= time(NULL);
+      return NULL;
+  }
+  if (!aurora->primary_id[0])
+    if (aurora_get_primary_id(mysql, aurora))
+      return NULL;
+  return mysql;
+}
+/* }}} */
+
+/* {{{ void aurora_close_internal */
+void aurora_close_internal(MYSQL *mysql)
+{
+  if (mysql)
+  {
+    mysql->extension->conn_hdlr= 0;
+    memset(&mysql->options, 0, sizeof(struct st_mysql_options));
+    libmariadb_api->mysql_close(mysql);
+  }
+}
+/* }}} */
+
+/* {{{ my_bool aurora_find_replica() */
+my_bool aurora_find_replica(AURORA *aurora)
+{
+  int valid_instances;
+  my_bool replica_found= 0;
+  AURORA_INSTANCE *instance[AURORA_MAX_INSTANCES];
+  MYSQL *mysql;
+
+  if (aurora->num_instances < 2)
+    return 0;
+
+
+  valid_instances= aurora_get_valid_instances(aurora, instance);
+
+  while (valid_instances && !replica_found)
+  {
+    int random_pick= rand() % valid_instances;
+    mysql= libmariadb_api->mysql_init(NULL);
+    mysql->options= aurora->save_mysql.options;
+
+    /* don't execute init_command on slave */
+//    mysql->extension->conn_hdlr= aurora->save_mysql.extension->conn_hdlr;
+    if ((aurora_connect_instance(aurora, instance[random_pick], mysql)))
+    {
+      switch (instance[random_pick]->type) {
+        case AURORA_REPLICA:
+          if (!aurora->mysql[AURORA_REPLICA])
+            aurora->mysql[AURORA_REPLICA]= mysql;
+          return 1;
+          break;
+        case AURORA_PRIMARY:
+          if (!aurora->mysql[AURORA_PRIMARY])
+            aurora->mysql[AURORA_PRIMARY]= mysql;
+          else
+            aurora_close_internal(mysql);
+          continue;
+          break;
+        default:
+          aurora_close_internal(mysql);
+          return 0;
+          break;
+      }
+    }
+    else
+      aurora_close_internal(mysql);
+    valid_instances= aurora_get_valid_instances(aurora, instance);
+  }
+  return 0;
+}
+/* }}} */
+
+/* {{{ AURORA_INSTANCE aurora_get_primary_id_instance() */
+AURORA_INSTANCE *aurora_get_primary_id_instance(AURORA *aurora)
+{
+  unsigned int i;
+
+  if (!aurora->primary_id[0])
+    return 0;
+
+  for (i=0; i < aurora->num_instances; i++)
+  {
+    if (!strncmp(aurora->instance[i].host, aurora->primary_id, strlen(aurora->primary_id)))
+      return &aurora->instance[i];
+  }
+  return NULL;
+}
+/* }}} */
+
+/* {{{ my_bool aurora_find_primary() */
+my_bool aurora_find_primary(AURORA *aurora)
+{
+  unsigned int i;
+  AURORA_INSTANCE *instance= NULL;
+  MYSQL *mysql;
+  my_bool check_primary= 1;
+
+  /* We try to find a primary:
+   * by looking 1st if a replica connect provided primary_id already
+   * by walking through instances */
+
+  if (!aurora->num_instances)
+    return 0;
+
+  for (i=0; i < aurora->num_instances; i++)
+  {
+    mysql= libmariadb_api->mysql_init(NULL);
+    mysql->options= aurora->save_mysql.options;
+
+    if (check_primary && aurora->primary_id[0])
+    {
+      if ((instance= aurora_get_primary_id_instance(aurora)) &&
+          aurora_connect_instance(aurora, instance, mysql) &&
+          instance->type == AURORA_PRIMARY)
+      {
+        aurora->primary_id[0]= 0;
+        aurora->mysql[AURORA_PRIMARY]= mysql;
+        return 1;
+      }
+      /* primary id connect failed, don't try again */
+      aurora->primary_id[0]= 0;
+      check_primary= 0;
+    }
+    else if (aurora->instance[i].type != AURORA_UNAVAILABLE)
+    {
+      if (aurora_connect_instance(aurora, &aurora->instance[i], mysql)
+          && aurora->instance[i].type == AURORA_PRIMARY)
+      {
+        aurora->mysql[AURORA_PRIMARY]= mysql;
+        return 1;
+      }
+    }
+    aurora_close_internal(mysql);
+  }
+  return 0;
+}
+/* }}} */
+
+/* {{{ MYSQL *aurora_connect */
+MYSQL *aurora_connect(MYSQL *mysql, const char *host, const char *user, const char *passwd,
+    const char *db, unsigned int port, const char *unix_socket __attribute__((unused)), unsigned long client_flag)
+{
+  AURORA *aurora= NULL;
+  MA_CONNECTION_HANDLER *save_hdlr= mysql->extension->conn_hdlr;
+
+  if (!libmariadb_api)
+    libmariadb_api= mysql->methods->api;
+
+  /* we call aurora_connect either from mysql_real_connect or from mysql_reconnect,
+   * so make sure in case of reconnect we don't allocate aurora twice */
+  if (!(aurora= (AURORA *)save_hdlr->data))
+  {
+    if (!(aurora= (AURORA *)calloc(1, sizeof(AURORA))))
+    {
+      mysql->methods->set_error(mysql, CR_OUT_OF_MEMORY, "HY000", 0);
+      return NULL;
+    }
+    aurora->save_mysql= *mysql;
+
+    save_hdlr->data= (void *)aurora;
+
+    if (aurora_parse_url(host, aurora))
+    {
+      goto error;
+    }
+
+    /* store login credentials for connect/reconnect */
+    if (user)
+      aurora->username= strdup(user);
+    if (passwd)
+      aurora->password= strdup(passwd);
+    if (db)
+      aurora->database= strdup(db);
+    aurora->port= port;
+    aurora->client_flag= client_flag;
+  }
+
+  /* we look for replica first:
+     if it's a primary we don't need to call find_aurora_primary
+     if it's a replica we can obtain primary_id */
+  if (!aurora->mysql[AURORA_REPLICA])
+  {
+    if (!aurora_find_replica(aurora))
+      aurora->mysql[AURORA_REPLICA]= NULL;
+    else
+      aurora->mysql[AURORA_REPLICA]->extension->conn_hdlr= save_hdlr;
+  }
+
+  if (!aurora->mysql[AURORA_PRIMARY])
+  {
+    if (!aurora_find_primary(aurora))
+      aurora->mysql[AURORA_PRIMARY]= NULL;
+    else
+      aurora->mysql[AURORA_PRIMARY]->extension->conn_hdlr= save_hdlr;
+  }
+
+  if (!aurora->mysql[AURORA_PRIMARY] && !aurora->mysql[AURORA_REPLICA])
+    goto error;
+
+  if (aurora->mysql[AURORA_PRIMARY])
+    aurora_switch_connection(mysql, aurora, AURORA_PRIMARY);
+  else
+    aurora_switch_connection(mysql, aurora, AURORA_REPLICA);
+  mysql->extension->conn_hdlr= save_hdlr;
+  return mysql;
+error:
+  aurora_close_memory(aurora);
+  return NULL;
+}
+/* }}} */
+
+/* {{{ my_bool aurora_reconnect */
+my_bool aurora_reconnect(MYSQL *mysql)
+{
+  AURORA *aurora;
+  MA_CONNECTION_HANDLER *save_hdlr= mysql->extension->conn_hdlr;
+  unsigned int i;
+
+  /* We can't determine if a new primary was promotoed, or if
+   * line just dropped - we will close both primary and replica
+   * connection and establish a new connection via
+   * aurora_connect */
+
+  aurora= (AURORA *)save_hdlr->data;
+
+  /* removed blacklisted instances */
+  for (i=0; i < aurora->num_instances; i++)
+    aurora->instance[i].type= AURORA_UNKNOWN;
+
+  if (aurora->mysql[AURORA_PRIMARY]->thread_id == mysql->thread_id)
+  {
+    /* don't send COM_QUIT */
+    aurora->mysql[AURORA_PRIMARY]->net.pvio= NULL;
+    aurora_close_internal(aurora->mysql[AURORA_PRIMARY]);
+    aurora->mysql[AURORA_PRIMARY]= NULL;
+    aurora_close_internal(aurora->mysql[AURORA_REPLICA]);
+    aurora->mysql[AURORA_REPLICA]= NULL;
+  }
+  else if (aurora->mysql[AURORA_REPLICA]->thread_id == mysql->thread_id)
+  {
+    /* don't send COM_QUIT */
+    aurora->mysql[AURORA_REPLICA]->net.pvio= NULL;
+    aurora_close_internal(aurora->mysql[AURORA_REPLICA]);
+    aurora->mysql[AURORA_REPLICA]= NULL;
+    aurora_close_internal(aurora->mysql[AURORA_PRIMARY]);
+    aurora->mysql[AURORA_PRIMARY]= NULL;
+  }
+
+  /* unset connections, so we can connect to primary and replica again */
+  aurora->mysql[AURORA_PRIMARY]= aurora->mysql[AURORA_REPLICA]= NULL;
+
+  if (aurora_connect(mysql, NULL, NULL, NULL, NULL, 0, NULL, 0))
+  {
+    if (aurora->mysql[AURORA_PRIMARY])
+      *mysql= *aurora->mysql[AURORA_PRIMARY];
+    return 0;
+  }
+  if (aurora->mysql[AURORA_REPLICA])
+    *mysql= *aurora->mysql[AURORA_REPLICA];
+  else
+    *mysql= aurora->save_mysql;
+  return 1;
+}
+/* }}} */
+
+/* {{{  void aurora_close */
+void aurora_close(MYSQL *mysql)
+{
+  MA_CONNECTION_HANDLER *hdlr= mysql->extension->conn_hdlr;
+  AURORA *aurora;
+  int i;
+
+  if (!hdlr || !hdlr->data)
+    return;
+  
+  aurora= (AURORA *)hdlr->data;
+  *mysql= aurora->save_mysql;
+
+  if (!aurora->mysql[AURORA_PRIMARY] && !aurora->mysql[AURORA_REPLICA])
+    goto end;
+
+  for (i=0; i < 2; i++)
+  {
+    if (aurora->mysql[i])
+    {
+      /* Make sure that connection wasn't closed before, e.g. after disconnect */
+      if (mysql->thread_id == aurora->mysql[i]->thread_id && !mysql->net.pvio)
+        aurora->mysql[i]->net.pvio= 0;
+
+      aurora_close_internal(aurora->mysql[i]);
+      aurora->mysql[i]= NULL;
+    }
+  }
+  /* free information  */
+end:
+  aurora_close_memory(aurora);
+  mysql->extension->conn_hdlr= hdlr;
+}
+/* }}} */
+
+/* {{{ my_bool is_replica_command */
+my_bool is_replica_command(const char *buffer, size_t buffer_len)
+{
+  const char *buffer_end= buffer + buffer_len;
+
+  for (; buffer < buffer_end; ++buffer)
+  {
+    char c;
+    if (isalpha(c=*buffer))
+    {
+      if (tolower(c) == 's')
+        return 1;
+      return 0;
+    }
+  }
+  return 0;
+}
+/* }}} */
+
+/* {{{ my_bool is_replica_stmt */
+my_bool is_replica_stmt(MYSQL *mysql, const char *buffer)
+{
+  unsigned long stmt_id= uint4korr(buffer);
+  LIST *stmt_list= mysql->stmts;
+
+  for (; stmt_list; stmt_list= stmt_list->next)
+  {
+    MYSQL_STMT *stmt= (MYSQL_STMT *)stmt_list->data;
+    if (stmt->stmt_id == stmt_id)
+      return 1;
+  }
+  return 0;
+}
+/* }}} */
+
+/* {{{ int aurora_command */
+int aurora_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
+    size_t length __attribute__((unused)), my_bool skipp_check __attribute__((unused)), void *opt_arg __attribute__((unused)))
+{
+  MA_CONNECTION_HANDLER *save_hdlr= mysql->extension->conn_hdlr;
+  AURORA *aurora= (AURORA *)save_hdlr->data;
+
+  /* if we don't have slave or slave became unavailable root traffic to master */
+  if (!aurora->mysql[AURORA_REPLICA] || !OPT_EXT_VAL(mysql, read_only))
+  {
+    if (command != COM_INIT_DB)
+    {
+      aurora_switch_connection(mysql, aurora, AURORA_PRIMARY);
+      goto end;
+    }
+  }
+
+  switch(command) {
+    case COM_INIT_DB:
+      /* we need to change default database on primary and replica */
+      if (aurora->mysql[AURORA_REPLICA] && mysql->thread_id == aurora->mysql[AURORA_PRIMARY]->thread_id)
+      {
+        aurora->mysql[AURORA_REPLICA]->extension->conn_hdlr= 0;
+        libmariadb_api->mysql_select_db(aurora->mysql[AURORA_REPLICA], arg);
+        aurora->mysql[AURORA_REPLICA]->extension->conn_hdlr= mysql->extension->conn_hdlr;
+      }
+      break;
+    case COM_QUERY:
+    case COM_STMT_PREPARE:
+      if (aurora->mysql[AURORA_REPLICA])
+        aurora_switch_connection(mysql, aurora, AURORA_REPLICA);
+      break;
+    case COM_STMT_EXECUTE:
+    case COM_STMT_FETCH:
+      if (aurora->mysql[AURORA_REPLICA] && aurora->mysql[AURORA_REPLICA]->stmts && 
+          is_replica_stmt(aurora->mysql[AURORA_REPLICA], arg))
+      {
+        aurora_switch_connection(mysql, aurora, AURORA_REPLICA);
+      }
+      else
+      {
+        aurora_switch_connection(mysql, aurora, AURORA_PRIMARY);
+      }
+      break;
+    default:
+      aurora_switch_connection(mysql, aurora, AURORA_PRIMARY);
+      break; 
+  }
+end:
+  mysql->extension->conn_hdlr= save_hdlr;
+  return 0;
+}
+/* }}} */
diff --git a/libmariadb/plugins/connection/replication.c b/libmariadb/plugins/connection/replication.c
new file mode 100644
index 00000000..0e7a18b7
--- /dev/null
+++ b/libmariadb/plugins/connection/replication.c
@@ -0,0 +1,357 @@
+/************************************************************************************
+    Copyright (C) 2015-2018 MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+
+   Part of this code includes code from the PHP project which
+   is freely available from http://www.php.net
+*************************************************************************************/
+
+/* MariaDB Connection plugin for load balancing  */
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <ma_string.h>
+#include <ma_common.h>
+
+#ifndef WIN32
+#include <sys/time.h>
+#endif
+
+/* function prototypes */
+MYSQL *repl_connect(MYSQL *mysql, const char *host, const char *user, const char *passwd,
+		    const char *db, unsigned int port, const char *unix_socket, unsigned long clientflag);
+void repl_close(MYSQL *mysql);
+int repl_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
+                      size_t length, my_bool skipp_check, void *opt_arg);
+int repl_set_optionsv(MYSQL *mysql, unsigned int option, ...);
+
+#define MARIADB_MASTER 0
+#define MARIADB_SLAVE  1
+
+static struct st_mariadb_api *libmariadb_api= NULL;
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_CONNECTION_PLUGIN replication_client_plugin =
+#else
+MARIADB_CONNECTION_PLUGIN _mysql_client_plugin_declaration_ =
+#endif
+{
+  MARIADB_CLIENT_CONNECTION_PLUGIN,
+  MARIADB_CLIENT_CONNECTION_PLUGIN_INTERFACE_VERSION,
+  "replication",
+  "Georg Richter",
+  "MariaDB connection plugin for load balancing",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  repl_connect,
+  repl_close,
+  repl_set_optionsv,
+  repl_command,
+  NULL,
+  NULL
+};
+
+typedef struct st_conn_repl {
+  MARIADB_PVIO *pvio[2];
+  MYSQL *slave_mysql;
+  my_bool read_only;
+  my_bool round_robin;
+  char *url;
+  char *host[2];
+  unsigned int port[2];
+  unsigned int current_type;
+} REPL_DATA;
+
+#define SET_SLAVE(mysql, data)\
+do {\
+  mysql->net.pvio= data->pvio[MARIADB_SLAVE]; \
+  data->current_type= MARIADB_SLAVE;\
+} while(0)
+
+#define SET_MASTER(mysql, data)\
+do {\
+  mysql->net.pvio= data->pvio[MARIADB_MASTER];\
+  data->current_type= MARIADB_MASTER;\
+} while(0)
+
+
+/* parse url
+ * Url has the following format:
+ * master[:port],slave1[:port],slave2[:port],..,slaven[:port]
+ *
+ */
+
+my_bool repl_parse_url(const char *url, REPL_DATA *data)
+{
+  char *p;
+  char *slaves[64];
+  int port[64], i,num_slaves= 0;
+
+  if (!url || url[0] == 0)
+    return 1;
+
+  memset(slaves, 0, 64 * sizeof(char *));
+  memset(&port, 0, 64 * sizeof(int));
+
+  memset(data->host, 0, 2 * sizeof(char *));
+  memset(data->port, 0, 2 * sizeof(int));
+
+  if (!data->url)
+    data->url= strdup(url);
+  data->host[MARIADB_MASTER]= p= data->url;
+ 
+  /* get slaves */ 
+  while((p && (p= strchr(p, ','))))
+  {
+    *p= '\0';
+    p++;
+    if (*p)
+    {
+      slaves[num_slaves]= p;
+      num_slaves++;
+    }
+  }
+
+  if (!num_slaves)
+    return 0;
+  if (num_slaves == 1)
+    data->host[MARIADB_SLAVE]= slaves[0];
+  else 
+  {
+    int random_nr;
+#ifndef WIN32
+    struct timeval tp;
+    gettimeofday(&tp,NULL);
+    srand(tp.tv_usec / 1000 + tp.tv_sec * 1000);
+#else
+    srand(GetTickCount());
+#endif
+
+    random_nr= rand() % num_slaves;
+    data->host[MARIADB_SLAVE]= slaves[random_nr];
+  }
+
+  /* check ports */
+  for (i=0; i < 2 && data->host[i]; i++)
+  {
+    /* We need to be aware of IPv6 addresses: According to RFC3986 sect. 3.2.2
+       hostnames have to be enclosed in square brackets if a port is given */
+    if (data->host[i][0]== '[' && strchr(data->host[i], ':') && (p= strchr(data->host[i],']')))
+    {
+      /* ignore first square bracket */
+      memmove(data->host[i], data->host[i]+1, strlen(data->host[i]) - 1);
+      p= strchr(data->host[i],']');
+      *p= 0;
+      p++;
+    }
+    else
+      p= data->host[i];
+    if (p && (p= strchr(p, ':')))
+    {
+      *p= '\0';
+      p++;
+      data->port[i]= atoi(p);
+    }
+  }
+
+  return 0;
+}
+
+MYSQL *repl_connect(MYSQL *mysql, const char *host, const char *user, const char *passwd,
+		    const char *db, unsigned int port, const char *unix_socket, unsigned long clientflag)
+{
+  REPL_DATA *data= NULL;
+  MA_CONNECTION_HANDLER *hdlr= mysql->extension->conn_hdlr;
+
+  if (!libmariadb_api)
+    libmariadb_api= mysql->methods->api;
+
+  if ((data= (REPL_DATA *)hdlr->data))
+  {
+    data->pvio[MARIADB_MASTER]->methods->close(data->pvio[MARIADB_MASTER]);
+    data->pvio[MARIADB_MASTER]= 0;
+    repl_close(mysql);
+  }
+
+  if (!(data= calloc(1, sizeof(REPL_DATA))))
+  {
+    mysql->methods->set_error(mysql, CR_OUT_OF_MEMORY, "HY000", 0);
+    return NULL;
+  }
+  memset(data->pvio, 0, 2 * sizeof(MARIADB_PVIO *));
+
+  if (repl_parse_url(host, data))
+    goto error;
+
+  /* try to connect to master */
+  if (!(libmariadb_api->mysql_real_connect(mysql, data->host[MARIADB_MASTER], user, passwd, db, 
+        data->port[MARIADB_MASTER] ? data->port[MARIADB_MASTER] : port, unix_socket, clientflag)))
+    goto error;
+
+  data->pvio[MARIADB_MASTER]= mysql->net.pvio;
+  hdlr->data= data;
+  SET_MASTER(mysql, data);
+
+  /* to allow immediate access without connection delay, we will start
+   * connecting to slave(s) in background */
+
+  /* if slave connection will fail, we will not return error but use master instead */
+  if (!(data->slave_mysql= libmariadb_api->mysql_init(NULL)) ||
+      !(mysql->methods->db_connect(data->slave_mysql, data->host[MARIADB_SLAVE], user, passwd, db, 
+                                   data->port[MARIADB_SLAVE] ? data->port[MARIADB_SLAVE] : port, unix_socket, clientflag)))
+  {
+    if (data->slave_mysql)
+      libmariadb_api->mysql_close(data->slave_mysql);
+    data->pvio[MARIADB_SLAVE]= NULL;
+  }
+  else
+  {
+    data->pvio[MARIADB_SLAVE]= data->slave_mysql->net.pvio;
+    data->slave_mysql->net.pvio->mysql= mysql;
+  }
+  return mysql;
+error:
+  if (data)
+  {
+    if (data->url)
+      free(data->url);
+    free(data);
+  }
+  return NULL;
+}
+
+void repl_close(MYSQL *mysql)
+{
+  MA_CONNECTION_HANDLER *hdlr= mysql->extension->conn_hdlr;
+  REPL_DATA *data= (REPL_DATA *)hdlr->data;
+
+  /* restore master */
+  SET_MASTER(mysql, data);
+
+  /* free slave information and close connection */
+  if (data->pvio[MARIADB_SLAVE])
+  {
+    /* restore mysql */
+    data->pvio[MARIADB_SLAVE]->mysql= data->slave_mysql;
+    libmariadb_api->mysql_close(data->slave_mysql);
+    data->pvio[MARIADB_SLAVE]= NULL;
+    data->slave_mysql= NULL;
+  }
+
+  /* free masrwe information and close connection */
+  free(data->url);
+  free(data);
+  mysql->extension->conn_hdlr->data= NULL;
+}
+
+static my_bool is_slave_command(const char *buffer, size_t buffer_len)
+{
+  const char *buffer_end= buffer + buffer_len;
+
+  for (; buffer < buffer_end; ++buffer)
+  {
+    char c;
+    if (isalpha(c=*buffer))
+    {
+      if (tolower(c) == 's')
+        return 1;
+      return 0;
+    }
+  }
+  return 0;
+}
+
+static my_bool is_slave_stmt(MYSQL *mysql, const char *buffer)
+{
+  unsigned long stmt_id= uint4korr(buffer);
+  LIST *stmt_list= mysql->stmts;
+
+  for (; stmt_list; stmt_list= stmt_list->next)
+  {
+    MYSQL_STMT *stmt= (MYSQL_STMT *)stmt_list->data;
+    if (stmt->stmt_id == stmt_id)
+      return 1;
+  }
+  return 0;
+}
+
+
+int repl_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
+                     size_t length, 
+                     my_bool skipp_check __attribute__((unused)), 
+                     void *opt_arg __attribute__((unused)))
+{
+  REPL_DATA *data= (REPL_DATA *)mysql->extension->conn_hdlr->data; 
+
+  /* if we don't have slave or slave became unavailable root traffic to master */
+  if (!data->pvio[MARIADB_SLAVE] || !data->read_only)
+  {
+    SET_MASTER(mysql, data);
+    return 0;
+  }
+  switch(command) {
+    case COM_QUERY:
+    case COM_STMT_PREPARE:
+      if (is_slave_command(arg, length))
+        SET_SLAVE(mysql, data)
+      else
+        SET_MASTER(mysql,data)
+      break;
+    case COM_STMT_EXECUTE:
+    case COM_STMT_FETCH:
+      if (data->pvio[MARIADB_SLAVE]->mysql->stmts && is_slave_stmt(data->pvio[MARIADB_SLAVE]->mysql, arg))
+        SET_SLAVE(mysql, data)
+      else
+        SET_MASTER(mysql,data)
+      break;
+
+    default:
+      SET_MASTER(mysql,data)
+      break; 
+  }
+  return 0;
+}
+
+int repl_set_optionsv(MYSQL *mysql, unsigned int option, ...)
+{
+  REPL_DATA *data= (REPL_DATA *)mysql->extension->conn_hdlr->data;
+  va_list ap;
+  void *arg1;
+  int rc= 0;
+
+  va_start(ap, option);
+  arg1= va_arg(ap, void *);
+
+  switch(option) {
+  case MARIADB_OPT_CONNECTION_READ_ONLY:
+    data->read_only= *(my_bool *)arg1;
+    break;
+  default:
+    rc= -1;
+    break;
+  }
+  va_end(ap);
+  return(rc);
+}
diff --git a/libmariadb/plugins/io/CMakeLists.txt b/libmariadb/plugins/io/CMakeLists.txt
new file mode 100644
index 00000000..8c304c99
--- /dev/null
+++ b/libmariadb/plugins/io/CMakeLists.txt
@@ -0,0 +1,15 @@
+IF (WITH_CURL)
+  INCLUDE(FindCURL)
+  IF(CURL_FOUND)
+
+    ADD_DEFINITIONS(-DHAVE_REMOTEIO=1)
+    #remote io plugin
+    REGISTER_PLUGIN(TARGET remote_io
+                  TYPE MARIADB_CLIENT_PLUGIN_IO
+                  CONFIGURATIONS DYNAMIC STATIC OFF
+                  DEFAULT DYNAMIC
+                  SOURCES ${CC_SOURCE_DIR}/plugins/io/remote_io.c
+                  INCLUDES ${CURL_INCLUDE_DIR}
+                  LIBRARIES ${CURL_LIBRARIES})
+  ENDIF()
+ENDIF()
diff --git a/libmariadb/plugins/io/remote_io.c b/libmariadb/plugins/io/remote_io.c
new file mode 100644
index 00000000..c06ecacd
--- /dev/null
+++ b/libmariadb/plugins/io/remote_io.c
@@ -0,0 +1,453 @@
+/************************************************************************************
+ * Copyright (C) 2015 - 2018 MariaDB Corporation AB
+ * Copyright (c) 2003 Simtec Electronics
+ *
+ * Re-implemented by Vincent Sanders <vince@kyllikki.org> with extensive
+ * reference to original curl example code
+ *
+ * Rewritten for MariaDB Connector/C by Georg Richter <georg@mariadb.com>
+ *
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 is a plugin for remote file access via libcurl.
+
+  The following URL types are supported:
+
+  http://
+  https://
+  ftp://
+  sftp://
+  ldap://
+  smb://
+*/
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+
+#include <stdio.h>
+#include <string.h>
+#ifndef WIN32
+#include <sys/time.h>
+#else
+#pragma comment(lib, "Ws2_32.lib")
+#endif
+#include <stdlib.h>
+#include <errno.h>
+#include <mariadb/ma_io.h>
+ 
+/* Internal file structure */
+
+MA_FILE *ma_rio_open(const char *url,const char *operation);
+int ma_rio_close(MA_FILE *file);
+int ma_rio_feof(MA_FILE *file);
+size_t ma_rio_read(void *ptr, size_t size, size_t nmemb, MA_FILE *file);
+char * ma_rio_gets(char *ptr, size_t size, MA_FILE *file);
+
+int ma_rio_init(char *, size_t, int, va_list);
+int ma_rio_deinit(void);
+
+struct st_rio_methods ma_rio_methods= {
+  ma_rio_open,
+  ma_rio_close,
+  ma_rio_feof,
+  ma_rio_read,
+  ma_rio_gets
+};
+
+typedef struct
+{
+  CURL *curl;
+  size_t length,
+         offset;
+  uchar *buffer;
+  int in_progress;
+} MA_REMOTE_FILE;
+ 
+CURLM *multi_handle= NULL;
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_REMOTEIO_PLUGIN remote_io_client_plugin=
+#else
+MARIADB_REMOTEIO_PLUGIN _mysql_client_plugin_declaration_ =
+#endif
+{
+  MARIADB_CLIENT_REMOTEIO_PLUGIN,
+  MARIADB_CLIENT_REMOTEIO_PLUGIN_INTERFACE_VERSION,
+  "remote_io",
+  "Georg Richter",
+  "Remote IO plugin",
+  {0,1,0},
+  "LGPL",
+  NULL,
+  ma_rio_init, 
+  ma_rio_deinit,
+  NULL,
+  &ma_rio_methods
+mysql_end_client_plugin;
+
+/* {{{ ma_rio_init - Plugin initialization */
+int ma_rio_init(char *unused1 __attribute__((unused)),
+                size_t unused2 __attribute__((unused)),
+                int unused3 __attribute__((unused)),
+                va_list unused4 __attribute__((unused)))
+{
+  curl_global_init(CURL_GLOBAL_ALL);
+  if (!multi_handle)
+    multi_handle = curl_multi_init();
+  return 0;
+}
+/* }}} */
+
+/* {{{ ma_rio_deinit - Plugin deinitialization */
+int ma_rio_deinit(void)
+{
+  if (multi_handle)
+  {
+    curl_multi_cleanup(multi_handle);
+    multi_handle= NULL;
+  }
+  curl_global_cleanup();
+  return 0;
+}
+/* }}} */
+
+/* {{{ curl_write_callback */
+static size_t rio_write_callback(char *buffer,
+                                 size_t size,
+                                 size_t nitems,
+                                 void *ptr)
+{
+  size_t free_bytes;
+  char *tmp;
+
+  MA_FILE *file= (MA_FILE *)ptr; 
+  MA_REMOTE_FILE *curl_file = (MA_REMOTE_FILE *)file->ptr;
+  size *= nitems;
+ 
+  free_bytes= curl_file->length - curl_file->offset; 
+
+  /* check if we need to allocate more memory */ 
+  if (size > free_bytes) {
+    tmp= (char *)realloc((gptr)curl_file->buffer, curl_file->length + (size - free_bytes));
+    if (!tmp)
+      size= free_bytes;
+    else {
+      curl_file->length+= size - free_bytes;
+      curl_file->buffer= (unsigned char *)tmp;
+    }
+  }
+
+  /* copy buffer into MA_FILE structure */
+  memcpy((char *)curl_file->buffer + curl_file->offset, buffer, size);
+  curl_file->offset+= size;
+ 
+  return size;
+}
+/* }}} */
+ 
+/* use to attempt to fill the read buffer up to requested number of bytes */ 
+static int fill_buffer(MA_FILE *file, size_t want)
+{
+  fd_set fdread;
+  fd_set fdwrite;
+  fd_set fdexcep;
+  struct timeval timeout;
+  int rc;
+  CURLMcode mc; /* curl_multi_fdset() return code */
+  MA_REMOTE_FILE *rf= (MA_REMOTE_FILE *)file->ptr;
+ 
+  /* only attempt to fill buffer if transactions still running and buffer
+     doesn't exceed required size already */ 
+  if (!rf->in_progress || (rf->offset > want))
+    return 0;
+ 
+  /* try to fill buffer */ 
+  do {
+    int maxfd = -1;
+    long curl_timeo = -1;
+ 
+    FD_ZERO(&fdread);
+    FD_ZERO(&fdwrite);
+    FD_ZERO(&fdexcep);
+ 
+    /* set a suitable timeout to fail on */ 
+    timeout.tv_sec = 20; /* 20 seconds */ 
+    timeout.tv_usec = 0;
+ 
+    curl_multi_timeout(multi_handle, &curl_timeo);
+    if(curl_timeo >= 0) {
+      timeout.tv_sec = curl_timeo / 1000;
+      if(timeout.tv_sec > 1)
+        timeout.tv_sec = 1;
+      else
+        timeout.tv_usec = (curl_timeo % 1000) * 1000;
+    }
+ 
+    /* get file descriptors from the transfers */ 
+    mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ 
+    if(mc != CURLM_OK)
+    {
+      /* todo: error handling */
+      break;
+    }
+ 
+    /* On success the value of maxfd is guaranteed to be >= -1. We call
+       select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
+       no fds ready yet so we call select(0, ...) */ 
+ 
+    if(maxfd == -1) {
+      struct timeval wait = { 0, 100 * 1000 }; /* 100ms */ 
+      rc = select(0, NULL, NULL, NULL, &wait);
+    }
+    else {
+      rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+    }
+ 
+    switch(rc) {
+    case -1:
+      /* select error */ 
+      break;
+ 
+    case 0:
+    default:
+      /* timeout or readable/writable sockets */ 
+      curl_multi_perform(multi_handle, &rf->in_progress);
+      break;
+    }
+  } while(rf->in_progress && (rf->offset < want));
+  return 1;
+}
+ 
+/* use to remove want bytes from the front of a files buffer */ 
+static int use_buffer(MA_FILE *file,int want)
+{
+  MA_REMOTE_FILE *rf= (MA_REMOTE_FILE *)file->ptr;
+  /* sort out buffer */ 
+  if((rf->offset - want) <=0) {
+    /* ditch buffer - write will recreate */ 
+    if (rf->buffer)
+      free(rf->buffer);
+ 
+    rf->buffer=NULL;
+    rf->offset=0;
+    rf->length=0;
+  }
+  else {
+    /* move rest down make it available for later */ 
+    memmove(rf->buffer,
+            &rf->buffer[want],
+            (rf->offset - want));
+ 
+    rf->offset -= want;
+  }
+  return 0;
+}
+ 
+MA_FILE *ma_rio_open(const char *url,const char *operation)
+{
+  /* this code could check for URLs or types in the 'url' and
+     basically use the real fopen() for standard files */ 
+ 
+  MA_FILE *file;
+  MA_REMOTE_FILE *rf;
+  (void)operation;
+ 
+  if (!(file = (MA_FILE *)calloc(sizeof(MA_FILE), 1)))
+    return NULL;
+ 
+  file->type= MA_FILE_REMOTE;
+  if (!(file->ptr= rf= (MA_REMOTE_FILE *)calloc(sizeof(MA_REMOTE_FILE), 1)))
+  {
+    free(file);
+    return NULL; 
+  }
+  rf->curl = curl_easy_init();
+
+  if (curl_easy_setopt(rf->curl, CURLOPT_URL, url) ||
+      curl_easy_setopt(rf->curl, CURLOPT_WRITEDATA, file) ||
+      curl_easy_setopt(rf->curl, CURLOPT_VERBOSE, 0L) ||
+      curl_easy_setopt(rf->curl, CURLOPT_WRITEFUNCTION, rio_write_callback))
+  {
+    free(file);
+    free(rf);
+    return NULL;
+  }
+
+  curl_multi_add_handle(multi_handle, rf->curl);
+
+  /* lets start the fetch */ 
+  curl_multi_perform(multi_handle, &rf->in_progress);
+
+  if((rf->offset == 0) && (!rf->in_progress)) {
+    /* if in_progress is 0 now, we should return NULL */ 
+
+    /* make sure the easy handle is not in the multi handle anymore */ 
+    curl_multi_remove_handle(multi_handle, rf->curl);
+
+    /* cleanup */ 
+    curl_easy_cleanup(rf->curl);
+
+    free(file);
+
+    file = NULL;
+  }
+  return file;
+}
+ 
+int ma_rio_close(MA_FILE *file)
+{
+  int ret=0;/* default is good return */ 
+  MA_REMOTE_FILE *rf= (MA_REMOTE_FILE *)file->ptr;
+
+  switch(file->type) {
+    case MA_FILE_REMOTE:
+    curl_multi_remove_handle(multi_handle, rf->curl);
+ 
+    /* cleanup */
+    curl_easy_cleanup(rf->curl);
+    break;
+ 
+  default: /* unknown or supported type - oh dear */ 
+    ret=EOF;
+    errno=EBADF;
+    break;
+  }
+ 
+  if(rf->buffer)
+    free(rf->buffer);/* free any allocated buffer space */ 
+ 
+  free(rf);
+  free(file);
+ 
+  return ret;
+}
+ 
+int ma_rio_feof(MA_FILE *file)
+{
+  int ret=0;
+  MA_REMOTE_FILE *rf= (MA_REMOTE_FILE *)file->ptr;
+ 
+  switch(file->type) {
+  case MA_FILE_REMOTE:
+    if((rf->offset == 0) && (!rf->in_progress))
+      ret = 1;
+    break;
+ 
+  default: /* unknown or supported type - oh dear */ 
+    ret=-1;
+    errno=EBADF;
+    break;
+  }
+  return ret;
+}
+ 
+size_t ma_rio_read(void *ptr, size_t size, size_t nmemb, MA_FILE *file)
+{
+  size_t want;
+  MA_REMOTE_FILE *rf= (MA_REMOTE_FILE *)file->ptr;
+ 
+  switch(file->type) {
+  case MA_FILE_REMOTE:
+    want = nmemb * size;
+
+    fill_buffer(file,want);
+ 
+    /* check if there's data in the buffer - if not fill_buffer()
+     * either errored or EOF */ 
+    if(!rf->offset)
+      return 0;
+ 
+    /* ensure only available data is considered */ 
+    if(rf->offset < want)
+      want = rf->offset;
+ 
+    /* xfer data to caller */ 
+    memcpy(ptr, rf->buffer, want);
+ 
+    use_buffer(file,want);
+ 
+    want = want / size;     /* number of items */ 
+    break;
+ 
+  default: /* unknown or supported type - oh dear */ 
+    want=0;
+    errno=EBADF;
+    break;
+ 
+  }
+  return want;
+}
+ 
+char *ma_rio_gets(char *ptr, size_t size, MA_FILE *file)
+{
+  size_t want = size - 1;/* always need to leave room for zero termination */ 
+  size_t loop;
+ 
+  switch(file->type) {
+  case MA_FILE_REMOTE:
+  {
+    MA_REMOTE_FILE *rf= (MA_REMOTE_FILE *)file->ptr;
+    fill_buffer(file,want);
+ 
+    /* check if there's data in the buffer - if not fill either errored or
+     * EOF */ 
+    if(!rf->offset)
+      return NULL;
+ 
+    /* ensure only available data is considered */ 
+    if(rf->offset < want)
+      want = rf->offset;
+ 
+    /*buffer contains data */ 
+    /* look for newline or eof */ 
+    for(loop=0;loop < want;loop++) {
+      if(rf->buffer[loop] == '\n') {
+        want=loop+1;/* include newline */ 
+        break;
+      }
+    }
+ 
+    /* xfer data to caller */ 
+    memcpy(ptr, rf->buffer, want);
+    ptr[want]=0;/* always null terminate */ 
+ 
+    use_buffer(file,want);
+ 
+    break;
+  }
+ 
+  default: /* unknown or supported type - oh dear */ 
+    ptr=NULL;
+    errno=EBADF;
+    break;
+  }
+ 
+  return ptr;/*success */ 
+}
diff --git a/libmariadb/plugins/plugin.def b/libmariadb/plugins/plugin.def
new file mode 100644
index 00000000..70af9256
--- /dev/null
+++ b/libmariadb/plugins/plugin.def
@@ -0,0 +1,2 @@
+EXPORTS
+  _mysql_client_plugin_declaration_ DATA
diff --git a/libmariadb/plugins/pvio/CMakeLists.txt b/libmariadb/plugins/pvio/CMakeLists.txt
new file mode 100644
index 00000000..76eb3ef0
--- /dev/null
+++ b/libmariadb/plugins/pvio/CMakeLists.txt
@@ -0,0 +1,27 @@
+SET(PVIO_DIR ${CC_SOURCE_DIR}/plugins/pvio)
+
+INCLUDE_DIRECTORIES(${PVIO_DIR})
+INCLUDE_DIRECTORIES(${CC_SOURCE_DIR}/include)
+
+#native password
+REGISTER_PLUGIN(TARGET pvio_socket
+                TYPE MARIADB_CLIENT_PLUGIN_PVIO
+                CONFIGURATIONS STATIC DYNAMIC DEFAULT
+                DEFAULT STATIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/pvio/pvio_socket.c)
+
+IF(WIN32)
+  # named pipe
+  REGISTER_PLUGIN(TARGET pvio_npipe
+                TYPE MARIADB_CLIENT_PLUGIN_PVIO
+                CONFIGURATIONS STATIC DYNAMIC DEFAULT
+                DEFAULT DYNAMIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/pvio/pvio_npipe.c)
+
+  # shared memory
+  REGISTER_PLUGIN(TARGET pvio_shmem
+                TYPE MARIADB_CLIENT_PLUGIN_PVIO
+                CONFIGURATIONS STATIC DYNAMIC DEFAULT
+                DEFAULT DYNAMIC
+                SOURCES ${CC_SOURCE_DIR}/plugins/pvio/pvio_shmem.c)
+ENDIF()
diff --git a/libmariadb/plugins/pvio/pvio_npipe.c b/libmariadb/plugins/pvio/pvio_npipe.c
new file mode 100644
index 00000000..17c59cef
--- /dev/null
+++ b/libmariadb/plugins/pvio/pvio_npipe.c
@@ -0,0 +1,359 @@
+/************************************************************************************
+    Copyright (C) 2015 Georg Richter and MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+
+*************************************************************************************/
+
+/* MariaDB virtual IO plugin for Windows named pipe communication */
+
+#ifdef _WIN32
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <ma_string.h>
+
+/* Function prototypes */
+my_bool pvio_npipe_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout);
+int pvio_npipe_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type);
+ssize_t pvio_npipe_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
+ssize_t pvio_npipe_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
+
+my_bool pvio_npipe_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo);
+my_bool pvio_npipe_close(MARIADB_PVIO *pvio);
+int pvio_npipe_fast_send(MARIADB_PVIO *pvio);
+int pvio_npipe_keepalive(MARIADB_PVIO *pvio);
+my_bool pvio_npipe_get_handle(MARIADB_PVIO *pvio, void *handle);
+my_bool pvio_npipe_is_blocking(MARIADB_PVIO *pvio);
+int pvio_npipe_shutdown(MARIADB_PVIO *pvio);
+my_bool pvio_npipe_is_alive(MARIADB_PVIO *pvio);
+
+struct st_ma_pvio_methods pvio_npipe_methods= {
+  pvio_npipe_set_timeout,
+  pvio_npipe_get_timeout,
+  pvio_npipe_read,
+  NULL,
+  pvio_npipe_write,
+  NULL,
+  NULL,
+  NULL,
+  pvio_npipe_connect,
+  pvio_npipe_close,
+  pvio_npipe_fast_send,
+  pvio_npipe_keepalive,
+  pvio_npipe_get_handle,
+  pvio_npipe_is_blocking,
+  pvio_npipe_is_alive,
+  NULL,
+  pvio_npipe_shutdown
+};
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_PVIO_PLUGIN pvio_npipe_client_plugin =
+#else
+MARIADB_PVIO_PLUGIN _mysql_client_plugin_declaration_ =
+#endif
+{
+  MARIADB_CLIENT_PVIO_PLUGIN,
+  MARIADB_CLIENT_PVIO_PLUGIN_INTERFACE_VERSION,
+  "pvio_npipe",
+  "Georg Richter",
+  "MariaDB virtual IO plugin for named pipe connection",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  &pvio_npipe_methods
+};
+
+struct st_pvio_npipe {
+  HANDLE pipe;
+  OVERLAPPED overlapped;
+  MYSQL *mysql;
+};
+
+my_bool pvio_npipe_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout)
+{
+  int timeout_ms;
+
+  if (!pvio)
+    return 1;
+  if (timeout > INT_MAX/1000)
+    timeout_ms= -1;
+  else if (timeout <=0)
+    timeout_ms= -1;
+  else
+    timeout_ms = timeout*1000;
+
+  pvio->timeout[type]= timeout_ms;
+  return 0;
+}
+
+int pvio_npipe_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type)
+{
+  if (!pvio)
+    return -1;
+  return pvio->timeout[type] / 1000;
+}
+
+static BOOL complete_io(HANDLE file, OVERLAPPED *ov, BOOL ret, DWORD timeout, DWORD *size)
+{
+  if (ret)
+    timeout = 0; /* IO completed successfully, do not WaitForSingleObject */
+  else
+  {
+    assert(timeout);
+    if (GetLastError() != ERROR_IO_PENDING)
+      return FALSE;
+  }
+
+  if (timeout)
+  {
+    HANDLE wait_handle= ov->hEvent;
+    assert(wait_handle && (wait_handle != INVALID_HANDLE_VALUE));
+
+    DWORD wait_ret= WaitForSingleObject(wait_handle, timeout);
+    switch (wait_ret)
+    {
+      case WAIT_OBJECT_0:
+        break;
+      case WAIT_TIMEOUT:
+        CancelIoEx(file, ov);
+        SetLastError(ERROR_TIMEOUT);
+        return FALSE;
+      default:
+        /* WAIT_ABANDONED or WAIT_FAILED unexpected. */
+        assert(0);
+        return FALSE;
+    }
+  }
+
+  return GetOverlappedResult(file, ov, size, FALSE);
+}
+
+ssize_t pvio_npipe_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length)
+{
+  BOOL ret;
+  ssize_t r= -1;
+  struct st_pvio_npipe *cpipe= NULL;
+  DWORD size;
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  cpipe= (struct st_pvio_npipe *)pvio->data;
+
+  ret= ReadFile(cpipe->pipe, buffer, (DWORD)length, NULL, &cpipe->overlapped);
+  ret= complete_io(cpipe->pipe, &cpipe->overlapped, ret, pvio->timeout[PVIO_READ_TIMEOUT], &size);
+  r= ret? (ssize_t) size:-1;
+
+  return r;
+}
+
+ssize_t pvio_npipe_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length)
+{
+  ssize_t r= -1;
+  struct st_pvio_npipe *cpipe= NULL;
+  BOOL ret;
+  DWORD size;
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  cpipe= (struct st_pvio_npipe *)pvio->data;
+
+  ret= WriteFile(cpipe->pipe, buffer, (DWORD)length, NULL , &cpipe->overlapped);
+  ret= complete_io(cpipe->pipe, &cpipe->overlapped, ret, pvio->timeout[PVIO_WRITE_TIMEOUT], &size);
+  r= ret ? (ssize_t)size : -1;
+  return r;
+}
+
+
+int pvio_npipe_keepalive(MARIADB_PVIO *pvio)
+{
+  /* keep alive is used for TCP/IP connections only */
+  return 0;
+}
+
+int pvio_npipe_fast_send(MARIADB_PVIO *pvio)
+{
+  /* not supported */
+  return 0;
+}
+my_bool pvio_npipe_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo)
+{
+  struct st_pvio_npipe *cpipe= NULL;
+
+  if (!pvio || !cinfo)
+    return 1;
+
+  /* if connect timeout is set, we will overwrite read/write timeout */
+  if (pvio->timeout[PVIO_CONNECT_TIMEOUT])
+  {
+    pvio->timeout[PVIO_READ_TIMEOUT]= pvio->timeout[PVIO_WRITE_TIMEOUT]= pvio->timeout[PVIO_CONNECT_TIMEOUT];
+  }
+
+  if (!(cpipe= (struct st_pvio_npipe *)LocalAlloc(LMEM_ZEROINIT, sizeof(struct st_pvio_npipe))))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_OUT_OF_MEMORY, "HY000", 0, "");
+    return 1;
+  }
+  pvio->data= (void *)cpipe;
+  cpipe->pipe= INVALID_HANDLE_VALUE;
+  pvio->mysql= cinfo->mysql;
+  pvio->type= cinfo->type;
+
+  if (cinfo->type == PVIO_TYPE_NAMEDPIPE)
+  {
+    char szPipeName[MAX_PATH];
+    ULONGLONG deadline;
+    LONGLONG wait_ms;
+    DWORD backoff= 0; /* Avoid busy wait if ERROR_PIPE_BUSY.*/
+    if ( ! cinfo->unix_socket || (cinfo->unix_socket)[0] == 0x00)
+      cinfo->unix_socket = MARIADB_NAMEDPIPE;
+    if (!cinfo->host || !strcmp(cinfo->host,LOCAL_HOST))
+      cinfo->host=LOCAL_HOST_NAMEDPIPE;
+
+    szPipeName[MAX_PATH - 1]= 0;
+    snprintf(szPipeName, MAX_PATH - 1, "\\\\%s\\pipe\\%s", cinfo->host, cinfo->unix_socket);
+
+    if (pvio->timeout[PVIO_CONNECT_TIMEOUT] > 0)
+      deadline = GetTickCount64() + pvio->timeout[PVIO_CONNECT_TIMEOUT];
+    else
+      deadline = INFINITE;
+
+    while (1)
+    {
+      if ((cpipe->pipe = CreateFile(szPipeName,
+                                    GENERIC_READ |
+                                    GENERIC_WRITE,
+                                    0,               /* no sharing */
+                                    NULL,            /* default security attributes */
+                                    OPEN_EXISTING,
+                                    FILE_FLAG_OVERLAPPED,
+                                    NULL)) != INVALID_HANDLE_VALUE)
+        break;
+
+      if (GetLastError() != ERROR_PIPE_BUSY)
+      {
+        pvio->set_error(pvio->mysql, CR_NAMEDPIPEOPEN_ERROR, "HY000", 0,
+                       cinfo->host, cinfo->unix_socket, GetLastError());
+        goto end;
+      }
+
+      Sleep(backoff);
+      if (!backoff)
+        backoff = 1;
+
+      wait_ms = deadline - GetTickCount64();
+      if (wait_ms > INFINITE)
+        wait_ms = INFINITE;
+
+      if ((wait_ms <= 0) || !WaitNamedPipe(szPipeName, (DWORD)wait_ms))
+      {
+        pvio->set_error(pvio->mysql, CR_NAMEDPIPEWAIT_ERROR, "HY000", 0,
+                       cinfo->host, cinfo->unix_socket, ERROR_TIMEOUT);
+        goto end;
+      }
+    }
+
+
+    if (!(cpipe->overlapped.hEvent= CreateEvent(NULL, FALSE, FALSE, NULL)))
+    {
+      pvio->set_error(pvio->mysql, CR_EVENT_CREATE_FAILED, "HY000", 0,
+                     GetLastError());
+      goto end;
+    }
+    return 0;
+  }
+end:
+  if (cpipe)
+  {
+    if (cpipe->pipe != INVALID_HANDLE_VALUE)
+      CloseHandle(cpipe->pipe);
+    LocalFree(cpipe);
+    pvio->data= NULL;
+  }
+  return 1;
+}
+
+my_bool pvio_npipe_close(MARIADB_PVIO *pvio)
+{
+  struct st_pvio_npipe *cpipe= NULL;
+  int r= 0;
+
+  if (!pvio)
+    return 1;
+
+  if (pvio->data)
+  {
+    cpipe= (struct st_pvio_npipe *)pvio->data;
+    CloseHandle(cpipe->overlapped.hEvent);
+    if (cpipe->pipe != INVALID_HANDLE_VALUE)
+    {
+      CloseHandle(cpipe->pipe);
+      cpipe->pipe= INVALID_HANDLE_VALUE;
+    }
+    LocalFree(pvio->data);
+    pvio->data= NULL;
+  }
+  return r;
+}
+
+my_bool pvio_npipe_get_handle(MARIADB_PVIO *pvio, void *handle)
+{
+  if (pvio && pvio->data)
+  {
+    *(HANDLE *)handle= ((struct st_pvio_npipe *)pvio->data)->pipe;
+    return 0;
+  }
+  return 1;
+} 
+
+my_bool pvio_npipe_is_blocking(MARIADB_PVIO *pvio)
+{
+  return 1;
+}
+
+int pvio_npipe_shutdown(MARIADB_PVIO *pvio)
+{
+  HANDLE h;
+  if (pvio_npipe_get_handle(pvio, &h) == 0)
+  {
+    return(CancelIoEx(h, NULL) ? 0 : 1);
+  }
+  return 1;
+}
+
+my_bool pvio_npipe_is_alive(MARIADB_PVIO *pvio)
+{
+  HANDLE handle;
+  if (!pvio || !pvio->data)
+    return FALSE;
+
+  handle= ((struct st_pvio_npipe *)pvio->data)->pipe;
+  /* Copy data from named pipe without removing it */
+  if (PeekNamedPipe(handle, NULL, 0, NULL, NULL, NULL))
+    return TRUE;
+  return test(GetLastError() != ERROR_BROKEN_PIPE);
+}
+#endif
diff --git a/libmariadb/plugins/pvio/pvio_plugin.def b/libmariadb/plugins/pvio/pvio_plugin.def
new file mode 100644
index 00000000..70af9256
--- /dev/null
+++ b/libmariadb/plugins/pvio/pvio_plugin.def
@@ -0,0 +1,2 @@
+EXPORTS
+  _mysql_client_plugin_declaration_ DATA
diff --git a/libmariadb/plugins/pvio/pvio_shmem.c b/libmariadb/plugins/pvio/pvio_shmem.c
new file mode 100644
index 00000000..f412393b
--- /dev/null
+++ b/libmariadb/plugins/pvio/pvio_shmem.c
@@ -0,0 +1,469 @@
+/************************************************************************************
+    Copyright (C) 2015 Georg Richter and MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+
+*************************************************************************************/
+/* MariaDB virtual IO plugin for Windows shared memory communication */
+
+#ifdef _WIN32
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <ma_string.h>
+
+#define PVIO_SHM_BUFFER_SIZE (16000 + 4)
+
+my_bool pvio_shm_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout);
+int pvio_shm_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type);
+ssize_t pvio_shm_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
+ssize_t pvio_shm_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
+int pvio_shm_wait_io_or_timeout(MARIADB_PVIO *pvio, my_bool is_read, int timeout);
+int pvio_shm_blocking(MARIADB_PVIO *pvio, my_bool value, my_bool *old_value);
+my_bool pvio_shm_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo);
+my_bool pvio_shm_close(MARIADB_PVIO *pvio);
+int pvio_shm_shutdown(MARIADB_PVIO *pvio);
+my_bool pvio_shm_is_alive(MARIADB_PVIO *pvio);
+my_bool pvio_shm_get_handle(MARIADB_PVIO *pvio, void *handle);
+
+struct st_ma_pvio_methods pvio_shm_methods= {
+  pvio_shm_set_timeout,
+  pvio_shm_get_timeout,
+  pvio_shm_read,
+  NULL,
+  pvio_shm_write,
+  NULL,
+  pvio_shm_wait_io_or_timeout,
+  pvio_shm_blocking,
+  pvio_shm_connect,
+  pvio_shm_close,
+  NULL,
+  NULL,
+  pvio_shm_get_handle,
+  NULL,
+  pvio_shm_is_alive,
+  NULL,
+  pvio_shm_shutdown
+};
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_PVIO_PLUGIN pvio_shmem_client_plugin=
+#else
+MARIADB_PVIO_PLUGIN _mysql_client_plugin_declaration_=
+#endif
+{
+  MARIADB_CLIENT_PVIO_PLUGIN,
+  MARIADB_CLIENT_PVIO_PLUGIN_INTERFACE_VERSION,
+  "pvio_shmem",
+  "Georg Richter",
+  "MariaDB virtual IO plugin for Windows shared memory communication",
+  {1, 0, 0},
+  "LGPPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  &pvio_shm_methods,
+ 
+};
+
+enum enum_shm_events
+{
+  PVIO_SHM_SERVER_WROTE= 0,
+  PVIO_SHM_SERVER_READ,
+  PVIO_SHM_CLIENT_WROTE,
+  PVIO_SHM_CLIENT_READ,
+  PVIO_SHM_CONNECTION_CLOSED
+};
+
+typedef struct {
+  HANDLE event[5];
+  HANDLE file_map;
+  LPVOID *map;
+  char *read_pos;
+  size_t buffer_size;
+} PVIO_SHM;
+
+const char *StrEvent[]= {"SERVER_WROTE", "SERVER_READ", "CLIENT_WROTE", "CLIENT_READ", "CONNECTION_CLOSED"};
+
+struct st_pvio_shm {
+  char *shm_name;
+};
+
+my_bool pvio_shm_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout)
+{
+  if (!pvio)
+    return 1;
+  pvio->timeout[type]= (timeout > 0) ? timeout * 1000 : INFINITE;
+  return 0;
+}
+
+int pvio_shm_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type)
+{
+  if (!pvio)
+    return -1;
+  return pvio->timeout[type] / 1000;
+}
+
+ssize_t pvio_shm_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length)
+{
+  PVIO_SHM *pvio_shm= (PVIO_SHM *)pvio->data;
+  size_t copy_size= length;
+  HANDLE events[2];
+  
+  if (!pvio_shm)
+    return -1;
+
+  /* we need to wait for write and close events */
+  if (!pvio_shm->buffer_size)
+  {
+    events[0]= pvio_shm->event[PVIO_SHM_CONNECTION_CLOSED];
+    events[1]= pvio_shm->event[PVIO_SHM_SERVER_WROTE];
+
+    switch(WaitForMultipleObjects(2, events, 0, pvio->timeout[PVIO_READ_TIMEOUT]))
+    {
+    case WAIT_OBJECT_0: /* server closed connection */
+      SetLastError(ERROR_GRACEFUL_DISCONNECT);
+      return -1;
+    case WAIT_OBJECT_0 +1: /* server_wrote event */
+      break;
+    case WAIT_TIMEOUT:
+      SetLastError(ETIMEDOUT);
+    default:
+      return -1;
+    }
+    /* server sent data */
+    pvio_shm->read_pos= (char *)pvio_shm->map;
+    pvio_shm->buffer_size= uint4korr(pvio_shm->read_pos);
+    pvio_shm->read_pos+= 4;
+  }
+
+  if (pvio_shm->buffer_size < copy_size)
+    copy_size= pvio_shm->buffer_size;
+  
+  if (copy_size)
+  {
+    memcpy(buffer, (uchar *)pvio_shm->read_pos, pvio_shm->buffer_size);
+    pvio_shm->read_pos+= copy_size;
+    pvio_shm->buffer_size-= copy_size;
+  }
+
+  /* we need to read again */
+  if (!pvio_shm->buffer_size)
+    if (!SetEvent(pvio_shm->event[PVIO_SHM_CLIENT_READ]))
+      return -1;
+
+  return (ssize_t)copy_size;
+}
+
+ssize_t pvio_shm_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length)
+{
+  HANDLE events[2];
+  PVIO_SHM *pvio_shm= (PVIO_SHM *)pvio->data;
+  size_t bytes_to_write= length;
+  uchar *buffer_pos= (uchar *)buffer;
+  
+  if (!pvio_shm)
+    return -1;
+
+  events[0]= pvio_shm->event[PVIO_SHM_CONNECTION_CLOSED];
+  events[1]= pvio_shm->event[PVIO_SHM_SERVER_READ];
+
+  while (bytes_to_write)
+  {
+    size_t pkt_length;
+    switch (WaitForMultipleObjects(2, events, 0, pvio->timeout[PVIO_WRITE_TIMEOUT])) {
+    case WAIT_OBJECT_0: /* connection closed */
+      SetLastError(ERROR_GRACEFUL_DISCONNECT);
+      return -1;
+    case WAIT_OBJECT_0 + 1: /* server_read */
+      break;
+    case WAIT_TIMEOUT:
+      SetLastError(ETIMEDOUT);
+    default:
+      return -1;
+    }
+    pkt_length= MIN(PVIO_SHM_BUFFER_SIZE, length);
+    int4store(pvio_shm->map, pkt_length);
+    memcpy((uchar *)pvio_shm->map + 4, buffer_pos, length);
+    buffer_pos+= length;
+    bytes_to_write-= length;
+
+    if (!SetEvent(pvio_shm->event[PVIO_SHM_CLIENT_WROTE]))
+      return -1;
+  }
+  return (ssize_t)length;
+}
+
+
+int pvio_shm_wait_io_or_timeout(MARIADB_PVIO *pvio, my_bool is_read, int timeout)
+{
+  return 0;
+}
+
+int pvio_shm_blocking(MARIADB_PVIO *pvio, my_bool block, my_bool *previous_mode)
+{
+  /* not supported */
+  return 0;
+}
+
+int pvio_shm_keepalive(MARIADB_PVIO *pvio)
+{
+  /* not supported */
+  return 0;
+}
+
+int pvio_shm_fast_send(MARIADB_PVIO *pvio)
+{
+  /* not supported */
+  return 0;
+}
+
+my_bool pvio_shm_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo)
+{
+  const char *base_memory_name;
+  char *prefixes[]= {"", "Global\\", NULL};
+  char *shm_name, *shm_suffix, *shm_prefix;
+  uchar i= 0;
+  int len;
+  int cid;
+  DWORD dwDesiredAccess= EVENT_MODIFY_STATE | SYNCHRONIZE;
+  HANDLE hdlConnectRequest= NULL,
+         hdlConnectRequestAnswer= NULL,
+         file_map= NULL;
+  LPVOID map= NULL;
+  PVIO_SHM *pvio_shm= (PVIO_SHM*)LocalAlloc(LMEM_ZEROINIT, sizeof(PVIO_SHM)); 
+
+  if (!pvio_shm)
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_OUT_OF_MEMORY, "HY000", 0, "");
+    return 0;
+  }
+
+  /* MariaDB server constructs the event name as follows:
+     "Global\\base_memory_name" or
+     "\\base_memory_name"
+   */
+ 
+
+  base_memory_name= (cinfo->host) ? cinfo->host : SHM_DEFAULT_NAME;
+
+  if (!(shm_name= (char *)LocalAlloc(LMEM_ZEROINIT, strlen(base_memory_name) + 40)))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_OUT_OF_MEMORY, "HY000", 0, "");
+    goto error;
+  }
+
+  /* iterate through prefixes */
+  while (prefixes[i])
+  {
+    len= sprintf(shm_name, "%s%s_", prefixes[i], base_memory_name);
+    shm_suffix= shm_name + len;
+    strcpy(shm_suffix, "CONNECT_REQUEST");
+    if ((hdlConnectRequest= OpenEvent(dwDesiredAccess, 0, shm_name)))
+    {
+      /* save prefix to prevent further loop */
+      shm_prefix= prefixes[i];
+      break;
+    }
+    i++;
+  }
+  if (!hdlConnectRequest)
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Opening CONNECT_REQUEST event failed", GetLastError());
+    goto error;
+  }
+
+  strcpy(shm_suffix, "CONNECT_ANSWER");
+  if (!(hdlConnectRequestAnswer= OpenEvent(dwDesiredAccess, 0, shm_name)))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Opening CONNECT_ANSWER event failed", GetLastError());
+    goto error;
+  }
+  
+  /* get connection id, so we can build the filename used for connection */
+  strcpy(shm_suffix, "CONNECT_DATA");
+  if (!(file_map= OpenFileMapping(FILE_MAP_WRITE, 0, shm_name)))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "OpenFileMapping failed", GetLastError());
+    goto error;
+  }
+
+  /* try to get first 4 bytes, which represents connection_id */
+  if (!(map= MapViewOfFile(file_map, FILE_MAP_WRITE, 0, 0, sizeof(cid))))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Reading connection_id failed", GetLastError());
+    goto error;
+  }
+
+  /* notify server */
+  if (!SetEvent(hdlConnectRequest))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Failed sending connection request", GetLastError());
+    goto error;
+  }
+
+  /* Wait for server answer */
+  switch(WaitForSingleObject(hdlConnectRequestAnswer, pvio->timeout[PVIO_CONNECT_TIMEOUT])) {
+  case WAIT_ABANDONED:
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Mutex was not released in time", GetLastError());
+    goto error;
+    break;
+  case WAIT_FAILED:
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Operation wait failed", GetLastError());
+    goto error;
+    break;
+  case WAIT_TIMEOUT:
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Operation timed out", GetLastError());
+    goto error;
+    break;
+  case WAIT_OBJECT_0:
+    break;
+  default:
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Wait for server failed", GetLastError());
+    break;
+  }
+
+  cid= uint4korr(map);
+
+  len= sprintf(shm_name, "%s%s_%d_", shm_prefix, base_memory_name, cid);
+  shm_suffix= shm_name + len;
+  
+  strcpy(shm_suffix, "DATA");
+  pvio_shm->file_map= OpenFileMapping(FILE_MAP_WRITE, 0, shm_name);
+  if (pvio_shm->file_map == NULL)
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "OpenFileMapping failed", GetLastError());
+    goto error;
+  }
+  if (!(pvio_shm->map= MapViewOfFile(pvio_shm->file_map, FILE_MAP_WRITE, 0, 0, PVIO_SHM_BUFFER_SIZE)))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "MapViewOfFile failed", GetLastError());
+    goto error;
+  }
+
+  for (i=0; i < 5; i++)
+  {
+    strcpy(shm_suffix, StrEvent[i]);
+    if (!(pvio_shm->event[i]= OpenEvent(dwDesiredAccess, 0, shm_name)))
+    {
+      PVIO_SET_ERROR(cinfo->mysql, CR_SHARED_MEMORY_CONNECT_ERROR, "HY000", 0, "Couldn't create event", GetLastError());
+      goto error;
+    }
+  }
+  /* we will first read from server */
+  SetEvent(pvio_shm->event[PVIO_SHM_SERVER_READ]);
+
+error:
+  if (hdlConnectRequest)
+    CloseHandle(hdlConnectRequest);
+  if (hdlConnectRequestAnswer)
+    CloseHandle(hdlConnectRequestAnswer);
+  if (shm_name)
+    LocalFree(shm_name);
+  if (map)
+    UnmapViewOfFile(map);
+  if (file_map)
+    CloseHandle(file_map);
+  if (pvio_shm)
+  {
+    /* check if all events are set */
+    if (pvio_shm->event[4])
+    {
+      pvio->data= (void *)pvio_shm;
+      pvio->mysql= cinfo->mysql;
+      pvio->type= cinfo->type;
+      pvio_shm->read_pos= (char *)pvio_shm->map;
+      pvio->mysql->net.pvio= pvio;
+      return 0;
+    }
+    for (i=0;i < 5; i++)
+      if (pvio_shm->event[i])
+        CloseHandle(pvio_shm->event[i]);
+    if (pvio_shm->map)
+      UnmapViewOfFile(pvio_shm->map);
+    if (pvio_shm->file_map)
+      CloseHandle(pvio_shm->file_map);
+    LocalFree(pvio_shm);
+  }
+  return 1;
+
+}
+
+my_bool pvio_shm_close(MARIADB_PVIO *pvio)
+{
+  PVIO_SHM *pvio_shm= (PVIO_SHM *)pvio->data;
+  int i;
+
+  if (!pvio_shm)
+    return 1;
+
+  /* notify server */
+  SetEvent(pvio_shm->event[PVIO_SHM_CONNECTION_CLOSED]);
+
+  UnmapViewOfFile(pvio_shm->map);
+  CloseHandle(pvio_shm->file_map);
+
+  for (i=0; i < 5; i++)
+    CloseHandle(pvio_shm->event[i]);
+
+  LocalFree(pvio_shm);
+  pvio->data= NULL;
+  return 0;
+}
+
+my_bool pvio_shm_get_socket(MARIADB_PVIO *pvio, void *handle)
+{
+  return 1;
+} 
+
+my_bool pvio_shm_is_blocking(MARIADB_PVIO *pvio)
+{
+  return 1;
+}
+
+int pvio_shm_shutdown(MARIADB_PVIO *pvio)
+{
+  PVIO_SHM *pvio_shm= (PVIO_SHM *)pvio->data;
+  if (pvio_shm)
+    return (SetEvent(pvio_shm->event[PVIO_SHM_CONNECTION_CLOSED]) ? 0 : 1);
+  return 1;
+}
+
+my_bool pvio_shm_is_alive(MARIADB_PVIO *pvio)
+{
+  PVIO_SHM *pvio_shm;
+  if (!pvio || !pvio->data)
+    return FALSE;
+  pvio_shm= (PVIO_SHM *)pvio->data;
+  return WaitForSingleObject(pvio_shm->event[PVIO_SHM_CONNECTION_CLOSED], 0)!=WAIT_OBJECT_0;
+}
+
+my_bool pvio_shm_get_handle(MARIADB_PVIO *pvio, void *handle)
+{
+
+  *(HANDLE **)handle= 0;
+  if (!pvio || !pvio->data)
+    return FALSE;
+  *(HANDLE **)handle= ((PVIO_SHM*)pvio->data)->event;
+  return TRUE;
+}
+#endif
+
diff --git a/libmariadb/plugins/pvio/pvio_socket.c b/libmariadb/plugins/pvio/pvio_socket.c
new file mode 100644
index 00000000..225f3bea
--- /dev/null
+++ b/libmariadb/plugins/pvio/pvio_socket.c
@@ -0,0 +1,1128 @@
+/************************************************************************************
+   Copyright (C) 2015,2016 MariaDB Corporation AB,
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+*************************************************************************************/
+
+/* 
+   MariaDB virtual IO plugin for socket communication:
+
+   The plugin handles connections via unix and network sockets. it is enabled by
+   default and compiled into Connector/C.
+*/
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <ma_context.h>
+#include <mariadb_async.h>
+#include <ma_common.h>
+#include <string.h>
+#include <time.h>
+#ifndef _WIN32
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_POLL
+#include <sys/poll.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netdb.h>
+#include <netinet/tcp.h>
+#define IS_SOCKET_EINTR(err) ((err) == SOCKET_EINTR)
+#else
+#include <ws2tcpip.h>
+#define O_NONBLOCK 1
+#define MSG_DONTWAIT 0
+#define IS_SOCKET_EINTR(err) 0
+#endif
+
+#ifndef SOCKET_ERROR
+#define SOCKET_ERROR -1
+#endif
+
+#ifndef INVALID_SOCKET
+#define INVALID_SOCKET -1
+#endif
+
+#define DNS_TIMEOUT 30
+
+#ifndef O_NONBLOCK
+#if defined(O_NDELAY)
+#define O_NONBLOCK O_NODELAY
+#elif defined (O_FNDELAY)
+#define O_NONBLOCK O_FNDELAY
+#else
+#error socket blocking is not supported on this platform
+#endif
+#endif
+
+#if SOCKET_EAGAIN != SOCKET_EWOULDBLOCK
+#define HAVE_SOCKET_EWOULDBLOCK 1
+#endif
+
+#ifdef _AIX
+#ifndef MSG_DONTWAIT
+#define MSG_DONTWAIT 0
+#endif
+#endif
+
+/* Function prototypes */
+my_bool pvio_socket_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout);
+int pvio_socket_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type);
+ssize_t pvio_socket_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
+ssize_t pvio_socket_async_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
+ssize_t pvio_socket_async_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
+ssize_t pvio_socket_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
+int pvio_socket_wait_io_or_timeout(MARIADB_PVIO *pvio, my_bool is_read, int timeout);
+int pvio_socket_blocking(MARIADB_PVIO *pvio, my_bool value, my_bool *old_value);
+my_bool pvio_socket_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo);
+my_bool pvio_socket_close(MARIADB_PVIO *pvio);
+int pvio_socket_fast_send(MARIADB_PVIO *pvio);
+int pvio_socket_keepalive(MARIADB_PVIO *pvio);
+my_bool pvio_socket_get_handle(MARIADB_PVIO *pvio, void *handle);
+my_bool pvio_socket_is_blocking(MARIADB_PVIO *pvio);
+my_bool pvio_socket_is_alive(MARIADB_PVIO *pvio);
+my_bool pvio_socket_has_data(MARIADB_PVIO *pvio, ssize_t *data_len);
+int pvio_socket_shutdown(MARIADB_PVIO *pvio);
+
+static int pvio_socket_init(char *unused1, 
+                           size_t unused2, 
+                           int unused3, 
+                           va_list);
+static int pvio_socket_end(void);
+static ssize_t ma_send(my_socket socket, const uchar *buffer, size_t length, int flags);
+static ssize_t ma_recv(my_socket socket, uchar *buffer, size_t length, int flags);
+
+struct st_ma_pvio_methods pvio_socket_methods= {
+  pvio_socket_set_timeout,
+  pvio_socket_get_timeout,
+  pvio_socket_read,
+  pvio_socket_async_read,
+  pvio_socket_write,
+  pvio_socket_async_write,
+  pvio_socket_wait_io_or_timeout,
+  pvio_socket_blocking,
+  pvio_socket_connect,
+  pvio_socket_close,
+  pvio_socket_fast_send,
+  pvio_socket_keepalive,
+  pvio_socket_get_handle,
+  pvio_socket_is_blocking,
+  pvio_socket_is_alive,
+  pvio_socket_has_data,
+  pvio_socket_shutdown
+};
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_PVIO_PLUGIN pvio_socket_client_plugin=
+#else
+MARIADB_PVIO_PLUGIN _mysql_client_plugin_declaration_
+#endif
+{
+  MARIADB_CLIENT_PVIO_PLUGIN,
+  MARIADB_CLIENT_PVIO_PLUGIN_INTERFACE_VERSION,
+  "pvio_socket",
+  "Georg Richter",
+  "MariaDB virtual IO plugin for socket communication",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  &pvio_socket_init,
+  &pvio_socket_end,
+  NULL,
+  &pvio_socket_methods
+};
+
+struct st_pvio_socket {
+  my_socket socket;
+  int fcntl_mode;
+  MYSQL *mysql;
+};
+
+static my_bool pvio_socket_initialized= FALSE;
+
+static int pvio_socket_init(char *errmsg __attribute__((unused)),
+                           size_t errmsg_length __attribute__((unused)), 
+                           int unused __attribute__((unused)), 
+                           va_list va __attribute__((unused)))
+{
+  pvio_socket_initialized= TRUE;
+  return 0;
+}
+
+static int pvio_socket_end(void)
+{
+  if (!pvio_socket_initialized)
+    return 1;
+  return 0;
+}
+
+my_bool pvio_socket_change_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout)
+{
+  struct timeval tm;
+  int rc= 0;
+  struct st_pvio_socket *csock= NULL;
+  if (!pvio)
+    return 1;
+  if (!(csock= (struct st_pvio_socket *)pvio->data))
+    return 1;
+  tm.tv_sec= timeout / 1000;
+  tm.tv_usec= (timeout % 1000) * 1000;
+  switch(type)
+  {
+    case PVIO_WRITE_TIMEOUT:
+#ifndef _WIN32
+      rc= setsockopt(csock->socket, SOL_SOCKET, SO_SNDTIMEO, (const char *)&tm, sizeof(tm));
+#else
+      rc= setsockopt(csock->socket, SOL_SOCKET, SO_SNDTIMEO, (const char *)&timeout, sizeof(int));
+#endif
+    break;
+    case PVIO_READ_TIMEOUT:
+#ifndef _WIN32
+      rc= setsockopt(csock->socket, SOL_SOCKET, SO_RCVTIMEO, (const char *)&tm, sizeof(tm));
+#else
+      rc= setsockopt(csock->socket, SOL_SOCKET, SO_RCVTIMEO, (const char *)&timeout, sizeof(int));
+#endif
+    break;
+    default:
+    break;
+  }
+  return rc;
+}
+
+/* {{{ pvio_socket_set_timeout */
+/*
+   set timeout value
+
+   SYNOPSIS
+     pvio_socket_set_timeout
+     pvio            PVIO
+     type           timeout type (connect, read, write)
+     timeout        timeout in seconds
+
+   DESCRIPTION
+     Sets timeout values for connection-, read or write time out.
+     PVIO internally stores all timeout values in milliseconds, but 
+     accepts and returns all time values in seconds (like api does).
+
+   RETURNS
+     0              Success
+     1              Error
+*/
+my_bool pvio_socket_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout)
+{
+  struct st_pvio_socket *csock= NULL;
+  if (!pvio)
+    return 1;
+  csock= (struct st_pvio_socket *)pvio->data;
+  pvio->timeout[type]= (timeout > 0) ? timeout * 1000 : -1;
+  if (csock)
+    return pvio_socket_change_timeout(pvio, type, timeout * 1000);
+  return 0;
+}
+/* }}} */
+
+/* {{{ pvio_socket_get_timeout */
+/*
+   get timeout value
+
+   SYNOPSIS
+     pvio_socket_get_timeout
+     pvio            PVIO
+     type           timeout type (connect, read, write)
+
+   DESCRIPTION
+     Returns timeout values for connection-, read or write time out.
+     PVIO internally stores all timeout values in milliseconds, but 
+     accepts and returns all time values in seconds (like api does).
+
+   RETURNS
+      0...n         time out value
+     -1             error
+*/
+int pvio_socket_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type)
+{
+  if (!pvio)
+    return -1;
+  return pvio->timeout[type] / 1000;
+}
+/* }}} */
+
+/* {{{ pvio_socket_read */
+/*
+   read from socket
+
+   SYNOPSIS
+   pvio_socket_read()
+     pvio             PVIO
+     buffer          read buffer
+     length          buffer length
+
+   DESCRIPTION
+     reads up to length bytes into specified buffer. In the event of an
+     error erno is set to indicate it.
+
+   RETURNS
+      1..n           number of bytes read
+      0              peer has performed shutdown
+     -1              on error
+                     
+*/   
+ssize_t pvio_socket_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length)
+{
+  ssize_t r;
+  int read_flags= MSG_DONTWAIT;
+  struct st_pvio_socket *csock;
+  int timeout;
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+  timeout = pvio->timeout[PVIO_READ_TIMEOUT];
+
+  while ((r = ma_recv(csock->socket, (void *)buffer, length, read_flags)) == -1)
+  {
+    int err = socket_errno;
+    if ((err != SOCKET_EAGAIN
+#ifdef HAVE_SOCKET_EWOULDBLOCK
+      && err != SOCKET_EWOULDBLOCK
+#endif
+      ) || timeout == 0)
+      return r;
+
+    if (pvio_socket_wait_io_or_timeout(pvio, TRUE, timeout) < 1)
+      return -1;
+  }
+  return r;
+}
+/* }}} */
+
+/* {{{ pvio_socket_async_read */
+/*
+   read from socket
+
+   SYNOPSIS
+   pvio_socket_async_read()
+     pvio             PVIO
+     buffer          read buffer
+     length          buffer length
+
+   DESCRIPTION
+     reads up to length bytes into specified buffer. In the event of an
+     error erno is set to indicate it.
+
+   RETURNS
+      1..n           number of bytes read
+      0              peer has performed shutdown
+     -1              on error
+                     
+*/   
+ssize_t pvio_socket_async_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length)
+{
+  ssize_t r= -1;
+#ifndef _WIN32
+  int read_flags= MSG_DONTWAIT;
+#endif
+  struct st_pvio_socket *csock= NULL;
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+
+#ifndef _WIN32
+  r= recv(csock->socket,(void *)buffer, length, read_flags);
+#else
+  /* Windows doesn't support MSG_DONTWAIT, so we need to set
+     socket to non blocking */
+  pvio_socket_blocking(pvio, 0, 0);
+  r= recv(csock->socket, (char *)buffer, (int)length, 0);
+#endif
+  return r;
+}
+/* }}} */
+
+static ssize_t ma_send(my_socket socket, const uchar *buffer, size_t length, int flags)
+{
+  ssize_t r;
+#if !defined(MSG_NOSIGNAL) && !defined(SO_NOSIGPIPE) && !defined(_WIN32)
+  struct sigaction act, oldact;
+  act.sa_handler= SIG_IGN;
+  sigaction(SIGPIPE, &act, &oldact);
+#endif
+  do {
+    r = send(socket, (const char *)buffer, IF_WIN((int)length,length), flags);
+  }
+  while (r == -1 && IS_SOCKET_EINTR(socket_errno));
+#if !defined(MSG_NOSIGNAL) && !defined(SO_NOSIGPIPE) && !defined(_WIN32)
+  sigaction(SIGPIPE, &oldact, NULL);
+#endif
+  return r;
+}
+
+static ssize_t ma_recv(my_socket socket, uchar *buffer, size_t length, int flags)
+{
+  ssize_t r;
+  do {
+   r = recv(socket, (char*) buffer, IF_WIN((int)length, length), flags);
+  }
+  while (r == -1 && IS_SOCKET_EINTR(socket_errno));
+  return r;
+}
+
+/* {{{ pvio_socket_async_write */
+/*
+   write to socket
+
+   SYNOPSIS
+   pvio_socket_async_write()
+     pvio             PVIO
+     buffer          read buffer
+     length          buffer length
+
+   DESCRIPTION
+     writes up to length bytes to socket. In the event of an
+     error erno is set to indicate it.
+
+   RETURNS
+      1..n           number of bytes read
+      0              peer has performed shutdown
+     -1              on error
+                     
+*/   
+ssize_t pvio_socket_async_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length)
+{
+  ssize_t r= -1;
+  struct st_pvio_socket *csock= NULL;
+#ifndef _WIN32
+  int write_flags= MSG_DONTWAIT;
+#ifdef MSG_NOSIGNAL
+  write_flags|= MSG_NOSIGNAL;
+#endif
+#endif
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+
+#ifndef WIN32
+  r= ma_send(csock->socket, buffer, length, write_flags);
+#else
+  /* Windows doesn't support MSG_DONTWAIT, so we need to set
+     socket to non blocking */
+  pvio_socket_blocking(pvio, 0, 0);
+  r= send(csock->socket, (const char *)buffer, (int)length, 0);
+#endif
+
+  return r;
+}
+/* }}} */
+
+/* {{{ pvio_socket_write */
+/*
+   write to socket
+
+   SYNOPSIS
+   pvio_socket_write()
+     pvio             PVIO
+     buffer          read buffer
+     length          buffer length
+
+   DESCRIPTION
+     writes up to length bytes to socket. In the event of an
+     error erno is set to indicate it.
+
+   RETURNS
+      1..n           number of bytes read
+      0              peer has performed shutdown
+     -1              on error
+                     
+*/
+ssize_t pvio_socket_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length)
+{
+  ssize_t r;
+  struct st_pvio_socket *csock;
+  int timeout;
+  int send_flags= MSG_DONTWAIT;
+#ifdef MSG_NOSIGNAL
+  send_flags|= MSG_NOSIGNAL;
+#endif
+  if (!pvio || !pvio->data)
+    return -1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+  timeout = pvio->timeout[PVIO_WRITE_TIMEOUT];
+
+  while ((r = ma_send(csock->socket, (void *)buffer, length,send_flags)) == -1)
+  {
+    int err = socket_errno;
+    if ((err != SOCKET_EAGAIN
+#ifdef HAVE_SOCKET_EWOULDBLOCK
+      && err != SOCKET_EWOULDBLOCK
+#endif
+       )|| timeout == 0)
+      return r;
+    if (pvio_socket_wait_io_or_timeout(pvio, FALSE, timeout) < 1)
+      return -1;
+  }
+  return r;
+}
+/* }}} */
+
+int pvio_socket_wait_io_or_timeout(MARIADB_PVIO *pvio, my_bool is_read, int timeout)
+{
+  int rc;
+  struct st_pvio_socket *csock= NULL;
+
+#ifndef _WIN32
+  struct pollfd p_fd;
+#else
+  struct timeval tv= {0,0};
+  fd_set fds, exc_fds;
+#endif
+
+  if (!pvio || !pvio->data)
+    return 0;
+
+  if (pvio->mysql->options.extension && 
+      pvio->mysql->options.extension->io_wait != NULL) {
+    my_socket handle;
+    if (pvio_socket_get_handle(pvio, &handle))
+      return 0;
+    return pvio->mysql->options.extension->io_wait(handle, is_read, timeout);
+  }
+
+  csock= (struct st_pvio_socket *)pvio->data;
+  {
+#ifndef _WIN32
+    memset(&p_fd, 0, sizeof(p_fd));
+    p_fd.fd= csock->socket;
+    p_fd.events= (is_read) ? POLLIN : POLLOUT;
+
+    if (!timeout)
+      timeout= -1;
+
+    do {
+      rc= poll(&p_fd, 1, timeout);
+    } while (rc == -1 && errno == EINTR);
+
+    if (rc == 0)
+      errno= ETIMEDOUT;
+#else
+    FD_ZERO(&fds);
+    FD_ZERO(&exc_fds);
+
+    FD_SET(csock->socket, &fds);
+    FD_SET(csock->socket, &exc_fds);
+
+    if (timeout >= 0)
+    {
+      tv.tv_sec= timeout / 1000;
+      tv.tv_usec= (timeout % 1000) * 1000;
+    }
+
+    rc= select(0, (is_read) ? &fds : NULL,
+                  (is_read) ? NULL : &fds,
+                  &exc_fds, 
+                  (timeout >= 0) ? &tv : NULL);
+
+    if (rc == SOCKET_ERROR)
+    {
+      errno= WSAGetLastError();
+    }
+    else if (rc == 0)
+    {
+      rc= SOCKET_ERROR;
+      WSASetLastError(WSAETIMEDOUT);
+      errno= ETIMEDOUT;
+    }
+    else if (FD_ISSET(csock->socket, &exc_fds))
+    {
+      int err;
+      int len = sizeof(int);
+      if (getsockopt(csock->socket, SOL_SOCKET, SO_ERROR, (char *)&err, &len) != SOCKET_ERROR)
+      {
+        WSASetLastError(err);
+        errno= err;
+      }
+      rc= SOCKET_ERROR;
+    }
+   
+#endif
+  }
+  return rc;
+}
+
+int pvio_socket_blocking(MARIADB_PVIO *pvio, my_bool block, my_bool *previous_mode)
+{
+  my_bool is_blocking;
+  struct st_pvio_socket *csock;
+  int new_fcntl_mode;
+
+  if (!pvio || !pvio->data)
+    return 1;
+
+  csock = (struct st_pvio_socket *)pvio->data;
+
+  is_blocking = !(csock->fcntl_mode & O_NONBLOCK);
+  if (previous_mode)
+    *previous_mode = is_blocking;
+
+  if (is_blocking == block)
+    return 0;
+
+  if (block)
+     new_fcntl_mode = csock->fcntl_mode & ~O_NONBLOCK;
+  else
+     new_fcntl_mode = csock->fcntl_mode | O_NONBLOCK;
+
+#ifdef _WIN32
+  {
+    ulong arg = block ? 0 : 1;
+    if (ioctlsocket(csock->socket, FIONBIO, (void *)&arg))
+    {
+      return(WSAGetLastError());
+    }
+  }
+#else
+  if (fcntl(csock->socket, F_SETFL, new_fcntl_mode) == -1)
+  {
+    return errno;
+  }
+#endif
+  csock->fcntl_mode = new_fcntl_mode;
+  return 0;
+}
+
+static int pvio_socket_internal_connect(MARIADB_PVIO *pvio,
+                                       const struct sockaddr *name, 
+                                       size_t namelen)
+{
+  int rc= 0;
+  struct st_pvio_socket *csock= NULL;
+  int timeout;
+
+  if (!pvio || !pvio->data)
+    return 1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+  timeout= pvio->timeout[PVIO_CONNECT_TIMEOUT];
+
+  /* set non blocking */
+  pvio_socket_blocking(pvio, 0, 0);
+
+#ifndef _WIN32
+  do {
+    rc= connect(csock->socket, (struct sockaddr*) name, (int)namelen);
+  } while (rc == -1 && (errno == EINTR || errno == EAGAIN));
+  /* in case a timeout values was set we need to check error values
+     EINPROGRESS */
+  if (timeout != 0 && rc == -1 && errno == EINPROGRESS)
+  {
+    rc= pvio_socket_wait_io_or_timeout(pvio, FALSE, timeout);
+    if (rc < 1)
+      return -1;
+    {
+      int error;
+      socklen_t error_len= sizeof(error);
+      if ((rc = getsockopt(csock->socket, SOL_SOCKET, SO_ERROR, 
+                           (char *)&error, &error_len)) < 0)
+        return errno;
+      else if (error) 
+        return error;
+    }
+  }
+#ifdef __APPLE__
+  if (csock->socket)
+  {
+    int val= 1;
+    setsockopt(csock->socket, SOL_SOCKET, SO_NOSIGPIPE, (void *)&val, sizeof(int));
+  }
+#endif
+#else
+  rc= connect(csock->socket, (struct sockaddr*) name, (int)namelen);
+  if (rc == SOCKET_ERROR)
+  {
+    if (WSAGetLastError() == WSAEWOULDBLOCK)
+    {
+      if (pvio_socket_wait_io_or_timeout(pvio, FALSE, timeout) < 0)
+        return -1;
+      rc= 0;
+    }
+  }
+#endif
+  return rc;
+}
+
+int pvio_socket_keepalive(MARIADB_PVIO *pvio)
+{
+  int opt= 1;
+  struct st_pvio_socket *csock= NULL;
+
+  if (!pvio || !pvio->data)
+    return 1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+
+  return setsockopt(csock->socket, SOL_SOCKET, SO_KEEPALIVE,
+#ifndef _WIN32
+               (const void *)&opt, sizeof(opt));
+#else
+               (char *)&opt, (int)sizeof(opt));
+#endif
+}
+
+int pvio_socket_fast_send(MARIADB_PVIO *pvio)
+{
+  int r= 0;
+  struct st_pvio_socket *csock= NULL;
+
+  if (!pvio || !pvio->data)
+    return 1;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+
+/* Setting IP_TOS is not recommended on Windows. See 
+   http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx
+*/
+#if !defined(_WIN32) && defined(IPTOS_THROUGHPUT)
+  {
+    int tos = IPTOS_THROUGHPUT;
+    r= setsockopt(csock->socket, IPPROTO_IP, IP_TOS,
+	                         (const void *)&tos, sizeof(tos));
+  }
+#endif /* !_WIN32 && IPTOS_THROUGHPUT */
+  if (!r)
+  {
+    int opt = 1;
+    /* turn off nagle algorithm */
+    r= setsockopt(csock->socket, IPPROTO_TCP, TCP_NODELAY,
+#ifdef _WIN32
+                  (const char *)&opt, (int)sizeof(opt));
+#else
+                  (const void *)&opt, sizeof(opt));
+#endif
+  }
+  return r;
+}
+
+static int
+pvio_socket_connect_sync_or_async(MARIADB_PVIO *pvio,
+                          const struct sockaddr *name, uint namelen)
+{
+  MYSQL *mysql= pvio->mysql;
+  if (mysql->options.extension && mysql->options.extension->async_context &&
+      mysql->options.extension->async_context->active)
+  {
+    /* even if we are not connected yet, application needs to check socket
+     * via mysql_get_socket api call, so we need to assign pvio */
+    mysql->options.extension->async_context->pvio= pvio;
+    pvio_socket_blocking(pvio, 0, 0);
+    return my_connect_async(pvio, name, namelen, pvio->timeout[PVIO_CONNECT_TIMEOUT]);
+  }
+
+  return pvio_socket_internal_connect(pvio, name, namelen);
+}
+
+my_bool pvio_socket_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo)
+{
+  struct st_pvio_socket *csock= NULL;
+  MYSQL *mysql;
+
+  if (!pvio || !cinfo)
+    return 1;
+
+  if (!(csock= (struct st_pvio_socket *)calloc(1, sizeof(struct st_pvio_socket))))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_OUT_OF_MEMORY, unknown_sqlstate, 0, "");
+    return 1;
+  }
+  pvio->data= (void *)csock;
+  csock->socket= INVALID_SOCKET;
+  mysql= pvio->mysql= cinfo->mysql;
+  pvio->type= cinfo->type;
+
+  if (cinfo->type == PVIO_TYPE_UNIXSOCKET)
+  {
+#ifndef _WIN32
+#ifdef HAVE_SYS_UN_H
+    size_t port_length;
+    struct sockaddr_un UNIXaddr;
+    if ((csock->socket = socket(AF_UNIX,SOCK_STREAM,0)) == INVALID_SOCKET ||
+        (port_length=strlen(cinfo->unix_socket)) >= (sizeof(UNIXaddr.sun_path)))
+    {
+      PVIO_SET_ERROR(cinfo->mysql, CR_SOCKET_CREATE_ERROR, unknown_sqlstate, 0, errno);
+      goto error;
+    }
+    memset((char*) &UNIXaddr, 0, sizeof(UNIXaddr));
+    UNIXaddr.sun_family = AF_UNIX;
+#if defined(__linux__)
+    /* Abstract socket */
+    if (cinfo->unix_socket[0] == '@')
+    {
+      strncpy(UNIXaddr.sun_path + 1, cinfo->unix_socket + 1, 106);
+      port_length+= offsetof(struct sockaddr_un, sun_path);
+    }
+    else
+#endif
+    {
+      size_t sun_path_size = sizeof(UNIXaddr.sun_path);
+      strncpy(UNIXaddr.sun_path, cinfo->unix_socket, sun_path_size - 1);
+      if (sun_path_size == strlen(UNIXaddr.sun_path) + 1 && UNIXaddr.sun_path[sun_path_size - 1] != '\0')
+      {
+        /* Making the string null-terminated */
+        UNIXaddr.sun_path[sun_path_size - 1] = '\0';
+      }
+      port_length= sizeof(UNIXaddr);
+    }
+    if (pvio_socket_connect_sync_or_async(pvio, (struct sockaddr *) &UNIXaddr, port_length))
+    {
+      PVIO_SET_ERROR(cinfo->mysql, CR_CONNECTION_ERROR, SQLSTATE_UNKNOWN, 
+                    ER(CR_CONNECTION_ERROR), cinfo->unix_socket, socket_errno);
+      goto error;
+    }
+    if (pvio_socket_blocking(pvio, 1, 0) == SOCKET_ERROR)
+    {
+      goto error;
+    }
+#else
+/* todo: error, not supported */
+#endif
+#endif
+  } else if (cinfo->type == PVIO_TYPE_SOCKET)
+  {
+    struct addrinfo hints, *save_res= 0, *bind_res= 0, *res= 0, *bres= 0;
+    char server_port[NI_MAXSERV];
+    int gai_rc;
+    int rc= 0;
+    time_t start_t= time(NULL);
+#ifdef _WIN32
+    DWORD wait_gai;
+#else
+    unsigned int wait_gai;
+#endif
+
+    memset(&server_port, 0, NI_MAXSERV);
+    snprintf(server_port, NI_MAXSERV, "%d", cinfo->port);
+
+    /* set hints for getaddrinfo */
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_protocol= IPPROTO_TCP; /* TCP connections only */
+    hints.ai_family= AF_UNSPEC;     /* includes: IPv4, IPv6 or hostname */
+    hints.ai_socktype= SOCK_STREAM;
+
+    /* if client has multiple interfaces, we will bind socket to given
+     * bind_address */
+    if (cinfo->mysql->options.bind_address)
+    {
+      wait_gai= 1;
+      while ((gai_rc= getaddrinfo(cinfo->mysql->options.bind_address, 0,
+                          &hints, &bind_res)) == EAI_AGAIN)
+      {
+        unsigned int timeout= mysql->options.connect_timeout ?
+                              mysql->options.connect_timeout : DNS_TIMEOUT;
+        if (time(NULL) - start_t > (time_t)timeout)
+          break;
+#ifndef _WIN32
+        usleep(wait_gai);
+#else
+        Sleep(wait_gai);
+#endif
+        wait_gai*= 2;
+      }
+      if (gai_rc != 0 || !bind_res)
+      {
+        PVIO_SET_ERROR(cinfo->mysql, CR_BIND_ADDR_FAILED, SQLSTATE_UNKNOWN, 
+                     CER(CR_BIND_ADDR_FAILED), cinfo->mysql->options.bind_address, gai_rc);
+        goto error;
+      }
+    }
+    /* Get the address information for the server using getaddrinfo() */
+    wait_gai= 1;
+    while ((gai_rc= getaddrinfo(cinfo->host, server_port,
+                                &hints, &res)) == EAI_AGAIN)
+    {
+      unsigned int timeout= mysql->options.connect_timeout ?
+                            mysql->options.connect_timeout : DNS_TIMEOUT;
+      if (time(NULL) - start_t > (time_t)timeout)
+        break;
+#ifndef _WIN32
+      usleep(wait_gai);
+#else
+      Sleep(wait_gai);
+#endif
+      wait_gai*= 2;
+    }
+    if (gai_rc != 0 || !res)
+    {
+      PVIO_SET_ERROR(cinfo->mysql, CR_UNKNOWN_HOST, SQLSTATE_UNKNOWN, 
+                   ER(CR_UNKNOWN_HOST), cinfo->host, gai_rc);
+      if (bind_res)
+        freeaddrinfo(bind_res);
+      goto error;
+    }
+
+    /* res is a linked list of addresses for the given hostname. We loop until
+       we are able to connect to one address or all connect attempts failed */
+    for (save_res= res; save_res; save_res= save_res->ai_next)
+    {
+      /* CONC-364: Avoid leak of open sockets */
+      if (csock->socket != INVALID_SOCKET)
+        closesocket(csock->socket);
+      csock->socket= socket(save_res->ai_family, save_res->ai_socktype, 
+                            save_res->ai_protocol);
+      if (csock->socket == INVALID_SOCKET)
+        /* Errors will be handled after loop finished */
+        continue;
+
+      if (bind_res)
+      {
+        for (bres= bind_res; bres; bres= bres->ai_next)
+        {
+          if (!(rc= bind(csock->socket, bres->ai_addr, (int)bres->ai_addrlen)))
+            break;
+        }
+        if (rc)
+        {
+          closesocket(csock->socket);
+          csock->socket= INVALID_SOCKET;
+          continue;
+        }
+      }
+
+      rc= pvio_socket_connect_sync_or_async(pvio, save_res->ai_addr, (uint)save_res->ai_addrlen);
+      if (!rc)
+      {
+        MYSQL *mysql= pvio->mysql;
+        if (mysql->options.extension && mysql->options.extension->async_context &&
+             mysql->options.extension->async_context->active)
+          break;
+        if (pvio_socket_blocking(pvio, 0, 0) == SOCKET_ERROR)
+        {
+          closesocket(csock->socket);
+          csock->socket= INVALID_SOCKET;
+          continue;
+        }
+        break; /* success! */
+      }
+    }
+ 
+    freeaddrinfo(res);
+    if (bind_res)
+      freeaddrinfo(bind_res);
+
+    if (csock->socket == INVALID_SOCKET)
+    {
+      PVIO_SET_ERROR(cinfo->mysql, CR_IPSOCK_ERROR, SQLSTATE_UNKNOWN, ER(CR_IPSOCK_ERROR),
+                         socket_errno);
+      goto error;
+    }
+
+    /* last call to connect 2 failed */
+    if (rc)
+    {
+      PVIO_SET_ERROR(cinfo->mysql, CR_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                     ER(CR_CONN_HOST_ERROR), cinfo->host,
+#ifdef _WIN32
+                     errno);
+#else
+                     socket_errno);
+#endif
+      goto error;
+    }
+    if (pvio_socket_blocking(pvio, 1, 0) == SOCKET_ERROR)
+      goto error;
+  }
+  /* apply timeouts */
+  if (pvio->timeout[PVIO_CONNECT_TIMEOUT] > 0)
+  {
+    if (pvio_socket_change_timeout(pvio, PVIO_READ_TIMEOUT, pvio->timeout[PVIO_CONNECT_TIMEOUT]) ||
+        pvio_socket_change_timeout(pvio, PVIO_WRITE_TIMEOUT, pvio->timeout[PVIO_CONNECT_TIMEOUT]))
+      goto error;
+  }
+  else
+  {
+    if (pvio->timeout[PVIO_WRITE_TIMEOUT] > 0)
+      if (pvio_socket_change_timeout(pvio, PVIO_WRITE_TIMEOUT, pvio->timeout[PVIO_WRITE_TIMEOUT]))
+        goto error;
+    if (pvio->timeout[PVIO_READ_TIMEOUT] > 0)
+      if (pvio_socket_change_timeout(pvio, PVIO_READ_TIMEOUT, pvio->timeout[PVIO_READ_TIMEOUT]))
+        goto error;
+  }
+  return 0;
+error:
+  /* close socket: MDEV-10891 */
+  if (csock->socket != INVALID_SOCKET)
+  {
+    closesocket(csock->socket);
+    csock->socket= INVALID_SOCKET;
+  }
+  if (pvio->data)
+  {
+    free((gptr)pvio->data);
+    pvio->data= NULL;
+  }
+  return 1;
+}
+
+/* {{{ my_bool pvio_socket_close() */
+my_bool pvio_socket_close(MARIADB_PVIO *pvio)
+{
+  struct st_pvio_socket *csock= NULL;
+  int r= 0;
+
+  if (!pvio)
+    return 1;
+
+  if (pvio->data)
+  {
+    csock= (struct st_pvio_socket *)pvio->data;
+    if (csock && csock->socket != INVALID_SOCKET)
+    {
+      r= closesocket(csock->socket);
+      csock->socket= INVALID_SOCKET;
+    }
+    free((gptr)pvio->data);
+    pvio->data= NULL;
+  }
+  return r;
+}
+/* }}} */
+
+/* {{{ my_socket pvio_socket_get_handle */
+my_bool pvio_socket_get_handle(MARIADB_PVIO *pvio, void *handle)
+{
+  if (pvio && pvio->data && handle)
+  {
+    *(my_socket *)handle= ((struct st_pvio_socket *)pvio->data)->socket;
+    return 0;
+  }
+  return 1;
+}
+/* }}} */
+
+/* {{{ my_bool pvio_socket_is_blocking(MARIADB_PVIO *pvio) */
+my_bool pvio_socket_is_blocking(MARIADB_PVIO *pvio)
+{
+  struct st_pvio_socket *csock= NULL;
+  my_bool r;
+
+  if (!pvio || !pvio->data)
+    return 0;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+  r = !(csock->fcntl_mode & O_NONBLOCK);
+  return r;
+}
+/* }}} */
+
+/* {{{ my_bool pvio_socket_is_alive(MARIADB_PVIO *pvio) */
+my_bool pvio_socket_is_alive(MARIADB_PVIO *pvio)
+{
+  struct st_pvio_socket *csock= NULL;
+ #ifndef _WIN32
+  struct pollfd poll_fd;
+#else
+  FD_SET sfds;
+  struct timeval tv= {0,0};
+#endif
+  int res;
+
+  if (!pvio || !pvio->data)
+    return 0;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+#ifndef _WIN32
+  memset(&poll_fd, 0, sizeof(struct pollfd));
+  poll_fd.events= POLLPRI | POLLIN;
+  poll_fd.fd= csock->socket;
+
+  res= poll(&poll_fd, 1, 0);
+  if (res <= 0) /* timeout or error */
+    return FALSE;
+  if (!(poll_fd.revents & (POLLIN | POLLPRI)))
+    return FALSE;
+  return TRUE;
+#else
+  /* We can't use the WSAPoll function, it's broken :-(
+     (see Windows 8 Bugs 309411 - WSAPoll does not report failed connections)
+     Instead we need to use select function:
+     If TIMEVAL is initialized to {0, 0}, select will return immediately; 
+     this is used to poll the state of the selected sockets.
+  */
+  FD_ZERO(&sfds);
+  FD_SET(csock->socket, &sfds);
+
+  res= select((int)csock->socket + 1, &sfds, NULL, NULL, &tv);
+  if (res > 0 && FD_ISSET(csock->socket, &sfds))
+    return TRUE;
+  return FALSE;
+#endif
+}
+/* }}} */
+
+/* {{{ my_boool pvio_socket_has_data */
+my_bool pvio_socket_has_data(MARIADB_PVIO *pvio, ssize_t *data_len)
+{
+  struct st_pvio_socket *csock= NULL;
+  char tmp_buf;
+  ssize_t len;
+  my_bool mode;
+ 
+  if (!pvio || !pvio->data)
+    return 0;
+
+  csock= (struct st_pvio_socket *)pvio->data;
+  /* MSG_PEEK: Peeks at the incoming data. The data is copied into the buffer,
+      but is not removed from the input queue. 
+  */
+  pvio_socket_blocking(pvio, 0, &mode);
+  len= recv(csock->socket, &tmp_buf, sizeof(tmp_buf), MSG_PEEK);
+  pvio_socket_blocking(pvio, mode, 0);
+  if (len < 0)
+    return 1;
+  *data_len= len;
+  return 0;
+}
+/* }}} */
+
+int pvio_socket_shutdown(MARIADB_PVIO *pvio)
+{
+  if (pvio && pvio->data)
+  {
+    my_socket s = ((struct st_pvio_socket *)pvio->data)->socket;
+#ifdef _WIN32
+    shutdown(s, SD_BOTH);
+    CancelIoEx((HANDLE)s, NULL);
+#else
+    shutdown(s, SHUT_RDWR);
+#endif
+  }
+  return -1;
+}
diff --git a/libmariadb/plugins/trace/trace_example.c b/libmariadb/plugins/trace/trace_example.c
new file mode 100644
index 00000000..1060542c
--- /dev/null
+++ b/libmariadb/plugins/trace/trace_example.c
@@ -0,0 +1,458 @@
+/************************************************************************************
+   Copyright (C) 2015 MariaDB Corporation AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+*************************************************************************************/
+#ifndef _WIN32
+#define _GNU_SOURCE 1
+#endif
+
+#include <ma_global.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <memory.h>
+
+#ifndef WIN32
+#include <dlfcn.h>
+#endif
+
+#define READ  0
+#define WRITE 1
+
+/* function prototypes */
+static int trace_init(char *errormsg, 
+                      size_t errormsg_size,
+                      int unused      __attribute__((unused)), 
+                      va_list unused1 __attribute__((unused)));
+static int trace_deinit(void);
+
+int (*register_callback)(my_bool register_callback, 
+                         void (*callback_function)(int mode, MYSQL *mysql, const uchar *buffer, size_t length));
+void trace_callback(int mode, MYSQL *mysql, const uchar *buffer, size_t length);
+
+#ifndef HAVE_TRACE_EXAMPLE_PLUGIN_DYNAMIC
+struct st_mysql_client_plugin trace_example_plugin=
+#else
+struct st_mysql_client_plugin _mysql_client_plugin_declaration_ =
+#endif
+{
+  MARIADB_CLIENT_TRACE_PLUGIN,
+  MARIADB_CLIENT_TRACE_PLUGIN_INTERFACE_VERSION,
+  "trace_example",
+  "Georg Richter",
+  "Trace example plugin",
+  {1,0,0},
+  "LGPL",
+  NULL,
+  &trace_init,
+  &trace_deinit,
+  NULL
+};
+
+static const char *commands[]= {
+  "COM_SLEEP",
+  "COM_QUIT",
+  "COM_INIT_DB",
+  "COM_QUERY",
+  "COM_FIELD_LIST",
+  "COM_CREATE_DB",
+  "COM_DROP_DB",
+  "COM_REFRESH",
+  "COM_SHUTDOWN",
+  "COM_STATISTICS",
+  "COM_PROCESS_INFO",
+  "COM_CONNECT",
+  "COM_PROCESS_KILL",
+  "COM_DEBUG",
+  "COM_PING",
+  "COM_TIME",
+  "COM_DELAYED_INSERT",
+  "COM_CHANGE_USER",
+  "COM_BINLOG_DUMP",
+  "COM_TABLE_DUMP",
+  "COM_CONNECT_OUT",
+  "COM_REGISTER_SLAVE",
+  "COM_STMT_PREPARE",
+  "COM_STMT_EXECUTE",
+  "COM_STMT_SEND_LONG_DATA",
+  "COM_STMT_CLOSE",
+  "COM_STMT_RESET",
+  "COM_SET_OPTION",
+  "COM_STMT_FETCH",
+  "COM_DAEMON",
+  "COM_END"
+};
+
+typedef struct {
+  unsigned long thread_id;
+  int last_command; /* COM_* values, -1 for handshake */
+  unsigned int max_packet_size;
+  unsigned int num_commands;
+  size_t total_size[2];
+  unsigned int client_flags;
+  char *username;
+  char *db;
+  char *command;
+  char *filename;
+  unsigned long refid; /* stmt_id, thread_id for kill */
+  uchar charset;
+  void *next;
+  int local_infile;
+  unsigned long pkt_length;
+} TRACE_INFO;
+
+#define TRACE_STATUS(a) ((!a) ? "ok" : "error")
+
+TRACE_INFO *trace_info= NULL;
+
+static TRACE_INFO *get_trace_info(unsigned long thread_id)
+{
+  TRACE_INFO *info= trace_info;
+
+  /* search connection */
+  while (info)
+  {
+    if (info->thread_id == thread_id)
+      return info;
+    else
+      info= (TRACE_INFO *)info->next;
+  }
+
+  if (!(info= (TRACE_INFO *)calloc(sizeof(TRACE_INFO), 1)))
+    return NULL;
+  info->thread_id= thread_id;
+  info->next= trace_info;
+  trace_info= info;
+  return info;
+}
+
+static void delete_trace_info(unsigned long thread_id)
+{
+  TRACE_INFO *last= NULL, *current;
+  current= trace_info;
+
+  while (current)
+  {
+    if (current->thread_id == thread_id)
+    {
+      printf("deleting thread %lu\n", thread_id);
+
+      if (last)
+        last->next= current->next;
+      else
+        trace_info= (TRACE_INFO *)current->next;
+      if (current->command)
+        free(current->command);
+      if (current->db)
+        free(current->db);
+      if (current->username)
+        free(current->username);
+      if (current->filename)
+        free(current->filename);
+      free(current);
+    }
+    last= current;
+    current= (TRACE_INFO *)current->next;
+  }
+
+}
+
+
+/* {{{ static int trace_init */
+/* 
+  Initialization routine
+
+  SYNOPSIS
+    trace_init
+      unused1
+      unused2
+      unused3
+      unused4
+
+  DESCRIPTION
+    Init function registers a callback handler for PVIO interface.
+
+  RETURN
+    0           success
+*/
+static int trace_init(char *errormsg, 
+                      size_t errormsg_size,
+                      int unused1 __attribute__((unused)), 
+                      va_list unused2 __attribute__((unused)))
+{
+  void *func;
+
+#ifdef WIN32
+  if (!(func= GetProcAddress(GetModuleHandle(NULL), "ma_pvio_register_callback")))
+#else
+  if (!(func= dlsym(RTLD_DEFAULT, "ma_pvio_register_callback")))
+#endif
+  {
+    strncpy(errormsg, "Can't find ma_pvio_register_callback function", errormsg_size);
+    return 1;
+  }
+  register_callback= func;
+  register_callback(TRUE, trace_callback);
+
+  return 0;
+}
+/* }}} */
+
+static int trace_deinit(void)
+{
+  /* unregister plugin */
+  while(trace_info)
+  {
+    printf("Warning: Connection for thread %lu not properly closed\n", trace_info->thread_id);
+    trace_info= (TRACE_INFO *)trace_info->next;
+  }
+  register_callback(FALSE, trace_callback);
+  return 0;
+}
+
+static void trace_set_command(TRACE_INFO *info, char *buffer, size_t size)
+{
+  if (info->command)
+    free(info->command);
+
+  info->command= calloc(1, size + 1);
+  memcpy(info->command, buffer, size);
+}
+
+void dump_buffer(uchar *buffer, size_t len)
+{
+  uchar *p= buffer;
+  while (p < buffer + len)
+  {
+    printf("%02x ", *p);
+    p++;
+  }
+  printf("\n");
+}
+
+static void dump_simple(TRACE_INFO *info, my_bool is_error)
+{
+  printf("%8lu: %s %s\n", info->thread_id, commands[info->last_command], TRACE_STATUS(is_error));
+}
+
+static void dump_reference(TRACE_INFO *info, my_bool is_error)
+{
+  printf("%8lu: %s(%lu) %s\n", info->thread_id, commands[info->last_command], (long)info->refid, TRACE_STATUS(is_error));
+}
+
+static void dump_command(TRACE_INFO *info, my_bool is_error)
+{
+  size_t i;
+  printf("%8lu: %s(",  info->thread_id, commands[info->last_command]);
+  for (i= 0; info->command && i < strlen(info->command); i++)
+    if (info->command[i] == '\n')
+      printf("\\n");
+    else if (info->command[i] == '\r')
+      printf("\\r");
+    else if (info->command[i] == '\t')
+      printf("\\t");
+    else
+      printf("%c", info->command[i]);
+  printf(") %s\n", TRACE_STATUS(is_error));
+}
+
+void trace_callback(int mode, MYSQL *mysql, const uchar *buffer, size_t length)
+{
+  unsigned long thread_id= mysql->thread_id;
+  TRACE_INFO *info;
+
+  /* check if package is server greeting package,
+   * and set thread_id */
+  if (!thread_id && mode == READ)
+  {
+    char *p= (char *)buffer;
+    p+= 4; /* packet length */
+    if ((uchar)*p != 0xFF) /* protocol version 0xFF indicates error */
+    {
+      p+= strlen(p + 1) + 2;
+      thread_id= uint4korr(p);
+    }
+    info= get_trace_info(thread_id);
+    info->last_command= -1;
+  }
+  else
+  {
+    char *p= (char *)buffer;
+    info= get_trace_info(thread_id);
+
+    if (info->last_command == -1)
+    {
+      if (mode == WRITE)
+      {
+        /* client authentication reply packet:
+         * 
+         *  ofs description        length
+         *  ------------------------
+         *  0   length             3
+         *  3   packet_no          1
+         *  4   client capab.      4
+         *  8   max_packet_size    4
+         *  12  character set      1
+         *  13  reserved          23
+         *  ------------------------
+         *  36  username (zero terminated)
+         *      len (1 byte) + password or
+         */
+
+        p+= 4;
+        info->client_flags= uint4korr(p);
+        p+= 4;
+        info->max_packet_size= uint4korr(p);
+        p+= 4;
+        info->charset= *p;
+        p+= 24;
+        info->username= strdup(p);
+        p+= strlen(p) + 1;
+        if (*p) /* we are not interested in authentication data */
+          p+= *p;
+        p++;
+        if (info->client_flags & CLIENT_CONNECT_WITH_DB)
+          info->db= strdup(p);
+      }
+      else
+      {
+        p++;
+        if ((uchar)*p == 0xFF)
+          printf("%8lu: CONNECT_ERROR(%d)\n", info->thread_id, uint4korr(p+1));
+        else
+          printf("%8lu: CONNECT_SUCCESS(host=%s,user=%s,db=%s)\n", info->thread_id, 
+                 mysql->host, info->username, info->db ? info->db : "'none'");
+        info->last_command= COM_SLEEP;
+      }
+    }
+    else {
+      char *p= (char *)buffer;
+      int len;
+
+      if (mode == WRITE)
+      {
+        if (info->pkt_length > 0)
+        {
+          info->pkt_length-= length;
+          return;
+        }
+        len= uint3korr(p);
+        info->pkt_length= len + 4 - length;
+        p+= 4;
+        info->last_command= *p;
+        p++;
+
+        switch (info->last_command) {
+        case COM_INIT_DB:
+        case COM_DROP_DB:
+        case COM_CREATE_DB:
+        case COM_DEBUG:
+        case COM_QUERY:
+        case COM_STMT_PREPARE:
+          trace_set_command(info, p, len - 1);
+          break;
+        case COM_PROCESS_KILL:
+          info->refid= uint4korr(p);
+          break;
+        case COM_QUIT:
+          printf("%8lu: COM_QUIT\n", info->thread_id);
+          delete_trace_info(info->thread_id);
+          break;
+        case COM_PING:
+          printf("%8lu: COM_PING\n", info->thread_id);
+          break;
+        case COM_STMT_EXECUTE:
+        case COM_STMT_RESET:
+        case COM_STMT_CLOSE:
+          info->refid= uint4korr(p);
+          break;
+        case COM_CHANGE_USER:
+          break;
+        default:
+          if (info->local_infile == 1)
+          {
+            printf("%8lu: SEND_LOCAL_INFILE(%s) ", info->thread_id, info->filename);
+            if (len)
+              printf("sent %d bytes\n", len);
+            else
+              printf("- error\n");
+            info->local_infile= 2;
+          }
+          else
+            printf("%8lu: UNKNOWN_COMMAND: %d\n", info->thread_id, info->last_command);
+          break;
+        }
+      }
+      else
+      {
+        my_bool is_error;
+
+        len= uint3korr(p);
+        p+= 4;
+
+        is_error= (len == -1);
+
+        switch(info->last_command) {
+        case COM_STMT_EXECUTE:
+        case COM_STMT_RESET:
+        case COM_STMT_CLOSE:
+        case COM_PROCESS_KILL:
+          dump_reference(info, is_error);
+          info->refid= 0;
+          info->last_command= 0;
+          break;
+        case COM_QUIT:
+          dump_simple(info, is_error);
+          break;
+        case COM_QUERY:
+        case COM_INIT_DB:
+        case COM_DROP_DB:
+        case COM_CREATE_DB:
+        case COM_DEBUG:
+        case COM_CHANGE_USER:
+          if (info->last_command == COM_QUERY && (uchar)*p == 251)
+          {
+            info->local_infile= 1;
+            p++;
+            info->filename= (char *)malloc(len);
+            strncpy(info->filename, (char *)p, len);
+            dump_command(info, is_error);
+            break;
+          }
+          dump_command(info, is_error);
+          if (info->local_infile != 1)
+          {
+            free(info->command);
+            info->command= NULL;
+          }
+          break;
+        case COM_STMT_PREPARE:
+          printf("%8lu: COM_STMT_PREPARE(%s) ", info->thread_id, info->command);
+          if (!*p)
+          {
+            unsigned long stmt_id= uint4korr(p+1);
+            printf("-> stmt_id(%lu)\n", stmt_id);
+          }
+          else
+            printf("error\n");
+          break;
+        }
+      }
+    }
+  }
+  info->total_size[mode]+= length;
+}