TLS/SSL changes (major rework)

Peer certificate validation: Since version 3.4 peer certificate verification is enabled by default. It can be disabled via `mysql_optionsv`, using option MYSQL_OPT_SSL_VERIFY_SERVER_CERT: my_bool verify= 0; mysql_options(mariadb, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify); Self signed certificates If the client obtained a self signed peer certificate from MariaDB server the verification will fail, with the following exceptions: * If the connection between client and server is considered to be secure:, e.g. * a unix_socket is used for client server communication * hostname is localhost (Windows operating system), 127.0.0.1 or ::1 * a specified fingerprint matches the fingerprint of the peer certificate (see below) * a client can verify the certificate using account password, it's possible if * account has a password * authentication plugin is "secure without TLS", that is, one of mysql_native_password, ed25519 or parsec. Fingerprint verification of the peer certificate A fingerprint is a cryptographic hash (SHA-256, SHA-384 or SHA-512) of the peer certificate's binary data. Even if the fingerprint matches, an expired or revoked certificate will not be accepted. For security reasons support for MD5 and SHA1 has been removed. Technical details: ================== - Peer certificate verification call was removed from ma_tls_connect, instead it will be called directly after the handshake succeeded (my_auth.c) - mysql->net.tls_self_signed_error was replaced by mysql->net.tls_verify_status which contains the result of the peer certfificate verification: The verification status can be obtained with mariadb_get_infov using new parameter MARIADB_TLS_VERIFY_STATUS. unsigned int tls_verify_status; mariadb_get_infov(mysql, MARIADB_TLS_VERIFY_STATUS, &tls_verify_status); The result is a combination of the following flags: MARIADB_TLS_VERIFY_OK 0 MARIADB_TLS_VERIFY_TRUST 1 MARIADB_TLS_VERIFY_HOST 2 MARIADB_TLS_VERIFY_PERIOD 4 MARIADB_TLS_VERIFY_FINGERPRINT 8 MARIADB_TLS_VERIFY_REVOKED 16 MARIADB_TLS_VERIFY_UNKNOWN 32 - GnuTLS peer certificate verification callback was removed and replaced by gnutls_verify_peers2() api function, so the peer certificate validation will happen after handshake. - OpenSSL implementation will no longer use SSL_verify_result to check the validity of the peer certificate. Instead a callback function will be called during the handshake, which collects all certificate validation errors. - If the peer certificate is not trusted, hostname verification will be skipped. - Testing Added new test tls, which implements a python based dummy server, which allows to set different certificates and TLS options. Please note. that tests are expected to fail, since the server doesn't support further steps like user authentication etc. after the handshake. Prerequisite for running the tls test is Python3.
2025-08-08 14:02:17 +03:00 · 2024-07-16 13:12:26 +02:00
parent 5386f1a3f2
commit 1287c901dc
33 changed files with 1950 additions and 431 deletions
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,16 @@ cache:
  directories:
    - $HOME/docker

+before_install:
+  - |-
+    if [ -z "$server_branch" ] ; then
+      case $TRAVIS_OS_NAME in
+        windows)
+          choco install python --version=3.12.0
+          ;;
+      esac
+    fi
+
 env:
  global: local=0 DB=testc CLEAR_TEXT=0

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,7 +37,7 @@ SET(CC_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})

 SET(CPACK_PACKAGE_VERSION_MAJOR 3)
 SET(CPACK_PACKAGE_VERSION_MINOR 4)
-SET(CPACK_PACKAGE_VERSION_PATCH 0)
+SET(CPACK_PACKAGE_VERSION_PATCH 1)
 SET(CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}")
 MATH(EXPR MARIADB_PACKAGE_VERSION_ID "${CPACK_PACKAGE_VERSION_MAJOR} * 10000 +
                            ${CPACK_PACKAGE_VERSION_MINOR} * 100   +
--- a/include/ma_common.h
+++ b/include/ma_common.h
@@ -131,15 +131,9 @@ typedef struct st_mariadb_field_extension
  MARIADB_CONST_STRING metadata[MARIADB_FIELD_ATTR_LAST+1]; /* 10.5 */
 } MA_FIELD_EXTENSION;

-#if defined(HAVE_SCHANNEL) || defined(HAVE_GNUTLS)
-#define reset_tls_self_signed_error(mysql)              \
+#ifdef HAVE_TLS
+#define reset_tls_error(mysql) \
  do {                         \
-    free((char*)mysql->net.tls_self_signed_error);      \
-    mysql->net.tls_self_signed_error= 0;                \
-  } while(0)
-#else
-#define reset_tls_self_signed_error(mysql)              \
-  do {                                                  \
-    mysql->net.tls_self_signed_error= 0;                \
+    mysql->net.tls_verify_status= 0; \
  } while(0)
 #endif
--- a/include/ma_tls.h
+++ b/include/ma_tls.h
@@ -21,6 +21,12 @@ enum enum_pvio_tls_type {
 #define PROTOCOL_MAX PROTOCOL_TLS_1_3

 #define TLS_VERSION_LENGTH 64
+
+#define have_fingerprint(m) \
+((m)->options.extension) && \
+(((m)->options.extension->tls_fp && (m)->options.extension->tls_fp[0]) ||\
+((m)->options.extension->tls_fp_list && (m)->options.extension->tls_fp_list[0]))
+
 extern char tls_library_version[TLS_VERSION_LENGTH];

 typedef struct st_ma_pvio_tls {
@@ -111,11 +117,12 @@ my_bool ma_tls_close(MARIADB_TLS *ctls);
   validation check of server certificate
   Parameter:
     MARIADB_TLS  MariaDB SSL container
+     flags        verification flags
   Returns:
-     ß            success
+     0            success
     1            error
 */
-int ma_tls_verify_server_cert(MARIADB_TLS *ctls);
+int ma_tls_verify_server_cert(MARIADB_TLS *ctls, unsigned int flags);

 /* ma_tls_get_cipher
   returns cipher for current ssl connection
@@ -134,6 +141,7 @@ const char *ma_tls_get_cipher(MARIADB_TLS *ssl);
     hash_type    hash_type as defined in ma_hash.h
     fp           buffer for fingerprint
     fp_len       buffer length
+     my_bool      verify_period

   Returns:
     actual size of finger print
@@ -150,7 +158,7 @@ unsigned int ma_tls_get_finger_print(MARIADB_TLS *ctls, uint hash_type, char *fp
 int ma_tls_get_protocol_version(MARIADB_TLS *ctls);
 const char *ma_pvio_tls_get_protocol_version(MARIADB_TLS *ctls);
 int ma_pvio_tls_get_protocol_version_id(MARIADB_TLS *ctls);
-unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls);
+unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls, unsigned int size);
 void ma_tls_set_connection(MYSQL *mysql);

 /* Function prototypes */
@@ -159,12 +167,12 @@ my_bool ma_pvio_tls_connect(MARIADB_TLS *ctls);
 ssize_t ma_pvio_tls_read(MARIADB_TLS *ctls, const uchar *buffer, size_t length);
 ssize_t ma_pvio_tls_write(MARIADB_TLS *ctls, const uchar *buffer, size_t length);
 my_bool ma_pvio_tls_close(MARIADB_TLS *ctls);
-int ma_pvio_tls_verify_server_cert(MARIADB_TLS *ctls);
+int ma_pvio_tls_verify_server_cert(MARIADB_TLS *ctls, unsigned int flags);
 const char *ma_pvio_tls_cipher(MARIADB_TLS *ctls);
 my_bool ma_pvio_tls_check_fp(MARIADB_TLS *ctls, const char *fp, const char *fp_list);
 my_bool ma_pvio_start_ssl(MARIADB_PVIO *pvio);
 void ma_pvio_tls_set_connection(MYSQL *mysql);
 void ma_pvio_tls_end();
-unsigned int ma_pvio_tls_get_peer_cert_info(MARIADB_TLS *ctls);
+unsigned int ma_pvio_tls_get_peer_cert_info(MARIADB_TLS *ctls, unsigned int size);

 #endif /* _ma_tls_h_ */
--- a/include/mariadb_com.h
+++ b/include/mariadb_com.h
@@ -297,10 +297,10 @@ typedef struct st_net {
  unsigned char reading_or_writing;
  char save_char;
  char unused_1;
-  my_bool unused_2;
+  my_bool tls_verify_status;
  my_bool compress;
-  my_bool unused_3;
-  const char *tls_self_signed_error;
+  my_bool unused_2;
+  char *unused_3;
  unsigned int last_errno;
  unsigned char error;
  my_bool unused_5;
--- a/include/mysql.h
+++ b/include/mysql.h
@@ -300,6 +300,7 @@ extern const char *SQLSTATE_UNKNOWN;
    MARIADB_CONNECTION_BYTES_READ,
    MARIADB_CONNECTION_BYTES_SENT,
    MARIADB_TLS_PEER_CERT_INFO,
+    MARIADB_TLS_VERIFY_STATUS
  };

  enum mysql_status { MYSQL_STATUS_READY,
@@ -448,6 +449,16 @@ typedef struct st_mysql_time
 #define MYSQL_WAIT_EXCEPT    4
 #define MYSQL_WAIT_TIMEOUT   8

+#define MARIADB_TLS_VERIFY_OK                  0
+#define MARIADB_TLS_VERIFY_TRUST               1
+#define MARIADB_TLS_VERIFY_HOST                2
+#define MARIADB_TLS_VERIFY_PERIOD              4
+#define MARIADB_TLS_VERIFY_FINGERPRINT         8
+#define MARIADB_TLS_VERIFY_REVOKED            16
+#define MARIADB_TLS_VERIFY_UNKNOWN            32
+#define MARIADB_TLS_VERIFY_ERROR             128  /* last */
+
+
 typedef struct character_set
 {
  unsigned int      number;     /* character set number              */
@@ -497,7 +508,7 @@ typedef struct
  int version;
  char *issuer;
  char *subject;
-  char fingerprint[65];
+  char fingerprint[129];
  struct tm not_before;
  struct tm not_after;
 } MARIADB_X509_INFO;
--- a/libmariadb/ma_pvio.c
+++ b/libmariadb/ma_pvio.c
@@ -522,47 +522,6 @@ my_bool ma_pvio_has_data(MARIADB_PVIO *pvio, ssize_t *data_len)
 /* }}} */

 #ifdef HAVE_TLS
-/**
-  Checks if self-signed certificate error should be ignored.
-*/
-static my_bool ignore_self_signed_cert_error(MARIADB_PVIO *pvio)
-{
-  const char *hostname= pvio->mysql->host;
-  const char *local_host_names[]= {
-#ifdef _WIN32
-  /*
-   On Unix, we consider TCP connections with "localhost"
-   an insecure transport, for the single reason to run tests for
-   insecure transport on CI.This is artificial, but should be ok.
-   Default client connections use unix sockets anyway, so it
-   would not hurt much.
-
-   On Windows, the situation is quite different.
-   Default connections type is TCP, default host name is "localhost",
-   non-password plugin gssapi is common (every installation)
-   In this environment, there would be a lot of faux/disruptive
-   "self-signed certificates" errors there. Thus, "localhost" TCP
-   needs to be considered secure transport.
-  */
-  "localhost",
-#endif
-  "127.0.0.1", "::1", NULL};
-  int i;
-  if (pvio->type != PVIO_TYPE_SOCKET)
-  {
-    return TRUE;
-  }
-  if (!hostname)
-    return FALSE;
-  for (i= 0; local_host_names[i]; i++)
-  {
-    if (strcmp(hostname, local_host_names[i]) == 0)
-    {
-      return TRUE;
-    }
-  }
-  return FALSE;
-}

 /* {{{ my_bool ma_pvio_start_ssl */
 my_bool ma_pvio_start_ssl(MARIADB_PVIO *pvio)
@@ -580,32 +539,6 @@ my_bool ma_pvio_start_ssl(MARIADB_PVIO *pvio)
    pvio->ctls= NULL;
    return 1;
  }
-
-  /* default behaviour:
-     1. peer certificate verification
-     2. verify CN (requires option ssl_verify_check)
-     3. verrify finger print
-  */
-  if (!pvio->mysql->options.extension->tls_allow_invalid_server_cert &&
-         !pvio->mysql->net.tls_self_signed_error &&
-         ma_pvio_tls_verify_server_cert(pvio->ctls))
-    return 1;
-
-  if (pvio->mysql->options.extension &&
-      ((pvio->mysql->options.extension->tls_fp && pvio->mysql->options.extension->tls_fp[0]) ||
-      (pvio->mysql->options.extension->tls_fp_list && pvio->mysql->options.extension->tls_fp_list[0])))
-  {
-    if (ma_pvio_tls_check_fp(pvio->ctls, 
-        pvio->mysql->options.extension->tls_fp,
-        pvio->mysql->options.extension->tls_fp_list))
-      return 1;
-    reset_tls_self_signed_error(pvio->mysql); // validated
-    return 0;
-  }
-
-  if (pvio->mysql->net.tls_self_signed_error && ignore_self_signed_cert_error(pvio))
-    reset_tls_self_signed_error(pvio->mysql);
-
  return 0;
 }
 /* }}} */
--- a/libmariadb/ma_tls.c
+++ b/libmariadb/ma_tls.c
@@ -103,9 +103,54 @@ my_bool ma_pvio_tls_close(MARIADB_TLS *ctls)
  return ma_tls_close(ctls);
 }

-int ma_pvio_tls_verify_server_cert(MARIADB_TLS *ctls)
+int ma_pvio_tls_verify_server_cert(MARIADB_TLS *ctls, unsigned int flags)
 {
-  return ma_tls_verify_server_cert(ctls);
+  MYSQL *mysql;
+  int rc;
+
+  if (!ctls || !ctls->pvio || !ctls->pvio->mysql)
+    return 0;
+
+  mysql= ctls->pvio->mysql;
+
+  /* Skip peer certificate verification */
+  if (ctls->pvio->mysql->options.extension->tls_allow_invalid_server_cert)
+  {
+    return 0;
+  }
+
+  rc= ma_tls_verify_server_cert(ctls, flags);
+
+  /* Set error messages */
+  if (!mysql->net.last_errno)
+  {
+    if (mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_PERIOD)
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+        ER(CR_SSL_CONNECTION_ERROR),
+        "Certificate not yet valid or expired");
+    else if (mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_FINGERPRINT)
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+        ER(CR_SSL_CONNECTION_ERROR),
+        "Fingerprint validation of peer certificate failed");
+    else if (mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_REVOKED)
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+        ER(CR_SSL_CONNECTION_ERROR),
+        "Certificate revoked");
+    else if (mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_HOST)
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+        ER(CR_SSL_CONNECTION_ERROR),
+        "Hostname verification failed");
+    else if (mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_UNKNOWN)
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+        ER(CR_SSL_CONNECTION_ERROR),
+        "Peer certificate verification failed");
+    else if (mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_TRUST)
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+        ER(CR_SSL_CONNECTION_ERROR),
+        "Peer certificate is not trusted");
+  }
+
+  return rc;
 }

 const char *ma_pvio_tls_cipher(MARIADB_TLS *ctls)
@@ -150,8 +195,7 @@ static signed char ma_hex2int(char c)

 static my_bool ma_pvio_tls_compare_fp(MARIADB_TLS *ctls,
                                     const char *cert_fp,
-                                     unsigned int cert_fp_len
-)
+                                     unsigned int cert_fp_len)
 {
  const char fp[EVP_MAX_MD_SIZE];
  unsigned int fp_len= EVP_MAX_MD_SIZE;
@@ -206,8 +250,6 @@ static my_bool ma_pvio_tls_compare_fp(MARIADB_TLS *ctls,
    signed char d1, d2;
    if (*p == ':')
      p++;
-    if (p - cert_fp > (int)fp_len - 1)
-      return 1;
    if ((d1 = ma_hex2int(*p)) == -1 ||
      (d2 = ma_hex2int(*(p + 1))) == -1 ||
      (char)(d1 * 16 + d2) != *c)
@@ -270,8 +312,8 @@ void ma_pvio_tls_set_connection(MYSQL *mysql)
  ma_tls_set_connection(mysql);
 }

-unsigned int ma_pvio_tls_get_peer_cert_info(MARIADB_TLS *ctls)
+unsigned int ma_pvio_tls_get_peer_cert_info(MARIADB_TLS *ctls, unsigned int size)
 {
-  return ma_tls_get_peer_cert_info(ctls);
+  return ma_tls_get_peer_cert_info(ctls, size);
 }
 #endif /* HAVE_TLS */
--- a/libmariadb/mariadb_lib.c
+++ b/libmariadb/mariadb_lib.c
@@ -1295,7 +1295,7 @@ mysql_init(MYSQL *mysql)
  }
  else
  {
-    memset((char*) (mysql), 0, sizeof(*(mysql)));
+    memset(mysql, 0, sizeof(MYSQL));
    mysql->net.pvio= 0;
    mysql->free_me= 0;
    mysql->net.extension= 0;
@@ -1462,7 +1462,7 @@ mysql_real_connect(MYSQL *mysql, const char *host, const char *user,
  if (!mysql->options.extension || !mysql->options.extension->status_callback)
    mysql_optionsv(mysql, MARIADB_OPT_STATUS_CALLBACK, NULL, NULL);

-  reset_tls_self_signed_error(mysql);
+  reset_tls_error(mysql);

  /* if host contains a semicolon, we need to parse connection string */
  if (host && strchr(host, ';'))
@@ -2468,7 +2468,7 @@ mysql_close(MYSQL *mysql)
    mysql_close_memory(mysql);
    mysql_close_options(mysql);
    ma_clear_session_state(mysql);
-    reset_tls_self_signed_error(mysql);
+    reset_tls_error(mysql);

    if (mysql->net.extension)
    {
@@ -4542,12 +4542,18 @@ my_bool mariadb_get_infov(MYSQL *mysql, enum mariadb_value value, void *arg, ...
  case MARIADB_TLS_PEER_CERT_INFO:
    if (mysql->net.pvio->ctls)
    {
-      if (!ma_pvio_tls_get_peer_cert_info(mysql->net.pvio->ctls))
+      unsigned int size;
+
+      size= va_arg(ap, unsigned int);
+      if (!ma_pvio_tls_get_peer_cert_info(mysql->net.pvio->ctls, size))
        *((MARIADB_X509_INFO **)arg)= (MARIADB_X509_INFO *)&mysql->net.pvio->ctls->cert_info;
      return 0;
    }
    *((MARIADB_X509_INFO **)arg)= NULL;
    break;
+  case MARIADB_TLS_VERIFY_STATUS:
+    *((unsigned int *)arg)= (unsigned int)mysql->net.tls_verify_status;
+    break;
 #endif
  case MARIADB_MAX_ALLOWED_PACKET:
    *((size_t *)arg)= (size_t)max_allowed_packet;
--- a/libmariadb/secure/gnutls.c
+++ b/libmariadb/secure/gnutls.c
@@ -33,6 +33,7 @@
 #include <ma_tls.h>
 #include <mariadb_async.h>
 #include <ma_context.h>
+#include <ma_crypt.h>

 pthread_mutex_t LOCK_gnutls_config;

@@ -46,8 +47,6 @@ enum ma_pem_type {
  MA_TLS_PEM_CRL
 };

-static int my_verify_callback(gnutls_session_t ssl);
-
 char tls_library_version[TLS_VERSION_LENGTH];

 struct st_cipher_map {
@@ -1069,8 +1068,10 @@ static int ma_tls_set_certs(MYSQL *mysql,
    ssl_error= gnutls_certificate_set_x509_crl_file(ctx,
                   mysql->options.extension->ssl_crl, GNUTLS_X509_FMT_PEM);
    if (ssl_error < 0)
+    {
      goto error;
    }
+  }

  if (!mysql->options.ssl_ca && !mysql->options.ssl_capath)
  {
@@ -1079,9 +1080,6 @@ static int ma_tls_set_certs(MYSQL *mysql,
      goto error;
  }

-  gnutls_certificate_set_verify_function(ctx,
-                                         my_verify_callback);
-
  if (mysql->options.ssl_key || mysql->options.ssl_cert)
  {
    char *keyfile= mysql->options.ssl_key;
@@ -1242,11 +1240,56 @@ ssize_t ma_tls_write_async(MARIADB_PVIO *pvio, const uchar *buffer, size_t lengt
  }
 }

-unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
+static gnutls_x509_crt_t ma_get_cert(MARIADB_TLS *ctls)
 {
+  MYSQL *mysql;
  const gnutls_datum_t *cert_list;
+  unsigned int cert_list_size;
+  gnutls_x509_crt_t cert;
+    
+  if (!ctls || !ctls->ssl)
+    return 0;
+
+  mysql= (MYSQL *)gnutls_session_get_ptr(ctls->ssl);
+
+  cert_list = gnutls_certificate_get_peers (ctls->ssl, &cert_list_size);
+  if (cert_list == NULL)
+  {
+    my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                        ER(CR_SSL_CONNECTION_ERROR), 
+                        "Unable to get server certificate");
+    return NULL;
+  }
+
+  /* Check expiration */
+  gnutls_x509_crt_init(&cert);
+
+  if (!gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER))
+    return cert;
+
+  return NULL;
+}
+
+unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls, uint hash_size)
+{
  gnutls_session_t ssl;
-  unsigned int list_size= 0;
+  unsigned int hash_alg;
+  char fp[129];
+
+  switch (hash_size) {
+    case 0:
+    case 256:
+      hash_alg= MA_HASH_SHA256;
+      break;
+    case 384:
+      hash_alg= MA_HASH_SHA384;
+      break;
+    case 512:
+      hash_alg= MA_HASH_SHA512;
+      break;
+    default:
+      return 1;
+  }

  if (!ctls || !ctls->ssl)
    return 1;
@@ -1254,21 +1297,14 @@ unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
  if (!(ssl = (gnutls_session_t)ctls->ssl))
    return 1;

-  if (ctls->cert_info.version)
-    return 0; /* already loaded */
-
  /* retrieve peer certificate information */
-  if ((cert_list= gnutls_certificate_get_peers(ssl, &list_size)))
+  if (!ctls->cert_info.version)
  {
    gnutls_x509_crt_t cert;

-    gnutls_x509_crt_init(&cert);
-    memset(&ctls->cert_info, 0, sizeof(MARIADB_X509_INFO));
-
-    if (!gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER))
+    if ((cert = ma_get_cert(ctls)))
    {
      size_t len= 0;
-      char fp[33];
      time_t notBefore, notAfter;

      ctls->cert_info.version= gnutls_x509_crt_get_version(cert);
@@ -1287,13 +1323,12 @@ unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
      notAfter= gnutls_x509_crt_get_expiration_time(cert);
      memcpy(&ctls->cert_info.not_after, gmtime(&notAfter), sizeof(struct tm));

-      ma_tls_get_finger_print(ctls, MA_HASH_SHA256, fp, sizeof(fp));
-      mysql_hex_string(ctls->cert_info.fingerprint, fp, 32);
-    }
      gnutls_x509_crt_deinit(cert);
-    return 0;
    }
-  return 1;
+  }
+  ma_tls_get_finger_print(ctls, hash_alg, fp, sizeof(fp));
+  mysql_hex_string(ctls->cert_info.fingerprint, fp, ma_hash_digest_size(hash_alg));
+  return 0;
 }


@@ -1383,10 +1418,84 @@ my_bool ma_tls_close(MARIADB_TLS *ctls)
  return 0;
 }

-int ma_tls_verify_server_cert(MARIADB_TLS *ctls __attribute__((unused)))
+static void set_verification_error(MYSQL *mysql, int status)
 {
-  /* server verification is already handled before during handshake */
-  return 0;
+  gnutls_session_t ssl;
+  gnutls_datum_t out;
+  int type;
+
+  if (!(ssl = (gnutls_session_t)mysql->net.pvio->ctls->ssl))
+    return;
+
+  type= gnutls_certificate_type_get(ssl);
+  gnutls_certificate_verification_status_print(status, type, &out, 0);
+  my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+               ER(CR_SSL_CONNECTION_ERROR), out.data);
+  gnutls_free(out.data);
+}
+
+int ma_tls_verify_server_cert(MARIADB_TLS *ctls, unsigned int flags)
+{
+  unsigned int status= 0;
+  gnutls_session_t ssl;
+  MYSQL *mysql;
+
+  if (!ctls || !(ssl= ctls->ssl) || !(mysql= (MYSQL *)gnutls_session_get_ptr(ssl)))
+    return 1;
+
+  CLEAR_CLIENT_ERROR(mysql);
+
+  if (flags & MARIADB_TLS_VERIFY_FINGERPRINT)
+  {
+    if (ma_pvio_tls_check_fp(ctls, mysql->options.extension->tls_fp, mysql->options.extension->tls_fp_list))
+    {
+      mysql->net.tls_verify_status= MARIADB_TLS_VERIFY_FINGERPRINT;
+      goto end;
+    }
+  }
+
+  if (gnutls_certificate_verify_peers2(ssl, &status))
+    return GNUTLS_E_CERTIFICATE_ERROR;
+
+  if (status)
+  {
+    set_verification_error(mysql, status);
+    if (status & GNUTLS_CERT_REVOKED)
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_REVOKED;
+    if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
+      if (flags & MARIADB_TLS_VERIFY_TRUST)
+        mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_TRUST;
+    if ((status & GNUTLS_CERT_NOT_ACTIVATED) || (status & GNUTLS_CERT_EXPIRED))
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_PERIOD;
+  }
+
+  if (!status && (flags & MARIADB_TLS_VERIFY_HOST))
+  {
+    gnutls_x509_crt_t cert= ma_get_cert(ctls);
+    int rc;
+
+    if (!cert)
+    {
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                   ER(CR_SSL_CONNECTION_ERROR), 
+                   "Can't access peer certificate");
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
+      goto end;
+    }
+
+    rc= gnutls_x509_crt_check_hostname2(cert, mysql->host, flags);
+    gnutls_x509_crt_deinit(cert);
+
+    if (!rc)
+    {
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                   ER(CR_SSL_CONNECTION_ERROR), 
+                   "Certificate subject name doesn't match specified hostname");
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
+    }    
+  }
+end:
+  return (mysql->net.tls_verify_status > 0);
 }

 const char *ma_tls_get_cipher(MARIADB_TLS *ctls)
@@ -1404,65 +1513,13 @@ const char *ma_tls_get_cipher(MARIADB_TLS *ctls)
  return openssl_cipher_name(kx, cipher, mac);
 }

-static int my_verify_callback(gnutls_session_t ssl)
-{
-  unsigned int status= 0;
-  MYSQL *mysql= (MYSQL *)gnutls_session_get_ptr(ssl);
-
-  CLEAR_CLIENT_ERROR(mysql);
-
-  if (!mysql->options.extension->tls_allow_invalid_server_cert)
-  {
-    const char *hostname= mysql->host;
-
-    if (gnutls_certificate_verify_peers3 (ssl, hostname, &status) < 0)
-      return GNUTLS_E_CERTIFICATE_ERROR;
-  } else {
-    if (gnutls_certificate_verify_peers2 (ssl, &status) < 0)
-      return GNUTLS_E_CERTIFICATE_ERROR;
-  }
-  if (status & GNUTLS_CERT_INVALID)
-  {
-    gnutls_datum_t out;
-    int type;
-
-    if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
-    {
-      /* accept self signed certificates if we don't have to verify server cert */
-      if (mysql->options.extension->tls_allow_invalid_server_cert)
-        return 0;
-
-      /* postpone the error for self signed certificates if CA isn't set */
-      if (!mysql->options.ssl_ca && !mysql->options.ssl_capath)
-      {
-        type= gnutls_certificate_type_get(ssl);
-        gnutls_certificate_verification_status_print(status, type, &out, 0);
-        mysql->net.tls_self_signed_error= (char*)out.data;
-        return 0;
-      }
-    }
-
-    /* gnutls default error message "certificate validation failed" isn't very
-       descriptive, so we provide more information about the error here */
-    type= gnutls_certificate_type_get(ssl);
-    gnutls_certificate_verification_status_print(status, type, &out, 0);
-    my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
-                 ER(CR_SSL_CONNECTION_ERROR), out.data);
-    gnutls_free(out.data);
-    
-    return GNUTLS_E_CERTIFICATE_ERROR;
-  }
-
-  return 0;
-}
-
 unsigned int ma_tls_get_finger_print(MARIADB_TLS *ctls, uint hash_type, char *fp, unsigned int len)
 {
  MYSQL *mysql;
  size_t fp_len= len;
+  gnutls_digest_algorithm_t hash_alg;
  const gnutls_datum_t *cert_list;
  unsigned int cert_list_size;
-  gnutls_digest_algorithm_t hash_alg;

  if (!ctls || !ctls->ssl)
    return 0;
@@ -1471,12 +1528,14 @@ unsigned int ma_tls_get_finger_print(MARIADB_TLS *ctls, uint hash_type, char *fp

  switch (hash_type)
  {
+#ifdef WEAK_HASH
  case MA_HASH_SHA1:
    hash_alg = GNUTLS_DIG_SHA1;
    break;
  case MA_HASH_SHA224:
    hash_alg = GNUTLS_DIG_SHA224;
    break;
+#endif
  case MA_HASH_SHA256:
    hash_alg = GNUTLS_DIG_SHA256;
    break;
--- a/libmariadb/secure/ma_schannel.c
+++ b/libmariadb/secure/ma_schannel.c
@@ -482,10 +482,10 @@ SECURITY_STATUS ma_schannel_read_decrypt(MARIADB_PVIO *pvio,
 }
 /* }}} */
 #include "win32_errmsg.h"
-my_bool ma_schannel_verify_certs(MARIADB_TLS *ctls, BOOL verify_server_name)
+unsigned int ma_schannel_verify_certs(MARIADB_TLS *ctls, unsigned int verify_flags)
 {
  SECURITY_STATUS status;
-
+  unsigned int verify_status = MARIADB_TLS_VERIFY_ERROR;
  MARIADB_PVIO *pvio= ctls->pvio;
  MYSQL *mysql= pvio->mysql;
  SC_CTX *sctx = (SC_CTX *)ctls->ssl;
@@ -498,6 +498,12 @@ my_bool ma_schannel_verify_certs(MARIADB_TLS *ctls, BOOL verify_server_name)
  HCERTSTORE store= NULL;
  int ret= 0;

+  if (verify_flags & MARIADB_TLS_VERIFY_FINGERPRINT)
+  {
+    if (ma_pvio_tls_check_fp(ctls, mysql->options.extension->tls_fp, mysql->options.extension->tls_fp_list))
+      return MARIADB_TLS_VERIFY_FINGERPRINT;
+  }
+
  status = schannel_create_store(ca_file, ca_path, crl_file, crl_path, &store, errmsg, sizeof(errmsg));
  if(status)
    goto end;
@@ -513,33 +519,48 @@ my_bool ma_schannel_verify_certs(MARIADB_TLS *ctls, BOOL verify_server_name)
  status = schannel_verify_server_certificate(
      pServerCert,
      store,
-      crl_file != 0 || crl_path != 0,
      mysql->host,
-      verify_server_name,
+      verify_flags,
      errmsg, sizeof(errmsg));

  if (status)
    goto end;

+  verify_status= MARIADB_TLS_VERIFY_OK;
+
  ret= 1;

 end:
  if (!ret)
  {
-    /* postpone the error for self signed certificates if CA isn't set */
-    if (status == CERT_E_UNTRUSTEDROOT && !ca_file && !ca_path)
+    switch (status) {
+      case CERT_E_UNTRUSTEDROOT:
+        if ((verify_flags & MARIADB_TLS_VERIFY_TRUST))
        {
-      mysql->net.tls_self_signed_error= strdup(errmsg);
-      ret= 1;
+          mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_TRUST;
+        }
+        break;
+      case CERT_E_EXPIRED:
+        mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_PERIOD;
+        break;
+      case CRYPT_E_REVOKED:
+        mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_REVOKED;
+        break;
+      case CERT_E_INVALID_NAME:
+      case CERT_E_CN_NO_MATCH:
+        mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
+        break;
+      default:
+        mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_ERROR;
+        break;
    }
-    else
    pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, 0, errmsg);
  }
  if (pServerCert)
    CertFreeCertificateContext(pServerCert);
  if(store)
    schannel_free_store(store);
-  return ret;
+  return verify_status;
 }


--- a/libmariadb/secure/ma_schannel.h
+++ b/libmariadb/secure/ma_schannel.h
@@ -43,6 +43,11 @@
 #include <windows.h>
 #include <sspi.h>

+#include <ma_global.h>
+#include <ma_sys.h>
+#include <ma_pvio.h>
+#include <ma_tls.h>
+
 #define SC_IO_BUFFER_SIZE 0x4000


@@ -75,7 +80,7 @@ extern my_bool ca_Check, crl_Check;
 SECURITY_STATUS ma_schannel_client_handshake(MARIADB_TLS *ctls);
 SECURITY_STATUS ma_schannel_handshake_loop(MARIADB_PVIO *pvio, my_bool InitialRead, SecBuffer *pExtraData);

-my_bool ma_schannel_verify_certs(MARIADB_TLS *ctls, BOOL verify_server_name);
+unsigned int ma_schannel_verify_certs(MARIADB_TLS *ctls, unsigned int verify_flags);
 ssize_t ma_schannel_write_encrypt(MARIADB_PVIO *pvio,
                                 uchar *WriteBuffer,
                                 size_t WriteBufferSize);
--- a/libmariadb/secure/openssl.c
+++ b/libmariadb/secure/openssl.c
@@ -33,6 +33,7 @@
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
 #include <time.h>
 #endif
+#include <ma_crypt.h>

 #if defined(_WIN32) && !defined(_OPENSSL_Applink) && defined(HAVE_OPENSSL_APPLINK_C)
 #include <openssl/applink.c>
@@ -87,6 +88,7 @@ static int ma_bio_write(BIO *h, const char *buf, int size);
 static BIO_METHOD ma_BIO_method;
 #endif

+static int ma_verification_callback(int preverify_ok, X509_STORE_CTX *ctx);

 static long ma_tls_version_options(const char *version)
 {
@@ -459,24 +461,38 @@ error:
  return NULL;
 }

-unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
+unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls, uint hash_size)
 {
  X509 *cert;
+  unsigned int hash_alg;
  SSL *ssl;
+  char fp[129];
+
+  switch (hash_size) {
+    case 0:
+    case 256:
+      hash_alg= MA_HASH_SHA256;
+      break;
+    case 384:
+      hash_alg= MA_HASH_SHA384;
+      break;
+    case 512:
+      hash_alg= MA_HASH_SHA512;
+      break;
+    default:
+      return 1;
+  }

  if (!ctls || !ctls->ssl)
    return 1;

-  /* Did we already read peer cert information ? */
-  if (ctls->cert_info.version)
-    return 0;
-
  ssl= (SSL *)ctls->ssl;

  /* Store peer certificate information */
+  if (!ctls->cert_info.version)
+  {
    if ((cert= SSL_get_peer_certificate(ssl)))
    {
-    char fp[33];
  #if OPENSSL_VERSION_NUMBER >= 0x10101000L
      const ASN1_TIME *not_before= X509_get0_notBefore(cert),
                      *not_after= X509_get0_notAfter(cert);
@@ -500,15 +516,16 @@ unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
      ctls->cert_info.subject= X509_NAME_oneline(X509_get_subject_name(cert), NULL, 0);
      ctls->cert_info.issuer= X509_NAME_oneline(X509_get_issuer_name(cert), NULL, 0);
      ctls->cert_info.version= X509_get_version(cert) + 1;
-
-    ma_tls_get_finger_print(ctls, MA_HASH_SHA256, fp, 33);
-    mysql_hex_string(ctls->cert_info.fingerprint, fp, 32);
-
      X509_free(cert);
-    return 0;
    }
+    else
      return 1;
  }
+  ma_tls_get_finger_print(ctls, hash_alg, fp, sizeof(fp));
+  mysql_hex_string(ctls->cert_info.fingerprint, fp, (unsigned long)ma_hash_digest_size(hash_alg));
+
+  return 0;
+}

 my_bool ma_tls_connect(MARIADB_TLS *ctls)
 {
@@ -539,6 +556,8 @@ my_bool ma_tls_connect(MARIADB_TLS *ctls)
 #else
  SSL_set_fd(ssl, (int)mysql_get_socket(mysql));
 #endif
+  if (!mysql->options.extension->tls_allow_invalid_server_cert)
+    SSL_set_verify(ssl, SSL_VERIFY_PEER, ma_verification_callback);

  while (try_connect && (rc= SSL_connect(ssl)) == -1)
  {
@@ -556,31 +575,12 @@ my_bool ma_tls_connect(MARIADB_TLS *ctls)
    }
  }

-  /* In case handshake failed or if a root certificate (ca) was specified,
-     we need to check the result code of X509 verification. A detailed check
-     of the peer certificate (hostname checking will follow later) */
-  if (rc != 1 || !mysql->options.extension->tls_allow_invalid_server_cert ||
-      mysql->options.ssl_ca || mysql->options.ssl_capath)
+  if (rc != 1)
  {
-    long x509_err= SSL_get_verify_result(ssl);
-    if ((x509_err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT ||
-         x509_err == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) && rc == 1 &&
-        !mysql->options.ssl_ca && !mysql->options.ssl_capath)
-      mysql->net.tls_self_signed_error= X509_verify_cert_error_string(x509_err);
-    else if (x509_err != X509_V_OK)
-    {
-      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
-                   ER(CR_SSL_CONNECTION_ERROR), X509_verify_cert_error_string(x509_err));
-      /* restore blocking mode */
-      if (!blocking)
-        pvio->methods->blocking(pvio, FALSE, 0);
-
-      return 1;
-    } else if (rc != 1) {
    ma_tls_set_error(mysql);
    return 1;
  }
-  }
+
  pvio->ctls->ssl= ctls->ssl= (void *)ssl;

  return 0;
@@ -714,9 +714,40 @@ my_bool ma_tls_close(MARIADB_TLS *ctls)
  return rc;
 }

-int ma_tls_verify_server_cert(MARIADB_TLS *ctls)
+/** Check for possible errors, and store the result in net.tls_verify_status.
+    verification will happen after handshake by ma_tls_verify_server_cert().
+    To retrieve all errors, this callback function returns always true.
+    (By default OpenSSL stops verification after first error
+*/
+static int ma_verification_callback(int preverify_ok __attribute__((unused)), X509_STORE_CTX *ctx)
 {
-  X509 *cert;
+  SSL *ssl;
+
+  int x509_err= X509_STORE_CTX_get_error(ctx);
+
+  if ((ssl = X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx())))
+  {
+    MYSQL *mysql= (MYSQL *)SSL_get_app_data(ssl);
+
+    if ((x509_err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT ||
+         x509_err == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN))
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_TRUST;
+    else if (x509_err == X509_V_ERR_CERT_REVOKED)
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_REVOKED;
+    else if (x509_err == X509_V_ERR_CERT_NOT_YET_VALID ||
+            x509_err == X509_V_ERR_CERT_HAS_EXPIRED)
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_PERIOD;
+    else if (x509_err != X509_V_OK)
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_UNKNOWN;
+  }
+
+  /* continue verification */
+  return 1;
+}
+
+int ma_tls_verify_server_cert(MARIADB_TLS *ctls, unsigned int verify_flags)
+{
+  X509 *cert= NULL;
  MYSQL *mysql;
  SSL *ssl;
  MARIADB_PVIO *pvio;
@@ -734,52 +765,97 @@ int ma_tls_verify_server_cert(MARIADB_TLS *ctls)
  mysql= (MYSQL *)SSL_get_app_data(ssl);
  pvio= mysql->net.pvio;

+  if (verify_flags & MARIADB_TLS_VERIFY_FINGERPRINT)
+  {
+    if (ma_pvio_tls_check_fp(ctls, mysql->options.extension->tls_fp, mysql->options.extension->tls_fp_list))
+    {
+      mysql->net.tls_verify_status |= MARIADB_TLS_VERIFY_FINGERPRINT;
+      return 1;
+    }
+
+    /* if certificates are valid and no revocation error occured,
+       we can return */
+    if (!(mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_PERIOD) &&
+        !(mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_REVOKED))
+    {
+      mysql->net.tls_verify_status= MARIADB_TLS_VERIFY_OK;
+      return 0;
+    }
+  }
+
+  if (mysql->net.tls_verify_status & verify_flags)
+  {
+    return 1;
+  }
+
+  if (verify_flags & MARIADB_TLS_VERIFY_HOST)
+  {
    if (!mysql->host)
    {
      pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
                      ER(CR_SSL_CONNECTION_ERROR), "Invalid (empty) hostname");
-    return 1;
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
+      return MARIADB_TLS_VERIFY_ERROR;
    }

    if (!(cert= SSL_get_peer_certificate(ssl)))
    {
      pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
                      ER(CR_SSL_CONNECTION_ERROR), "Unable to get server certificate");
-    return 1;
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
+      return MARIADB_TLS_VERIFY_ERROR;
    }
+
  #ifdef HAVE_OPENSSL_CHECK_HOST
    if (X509_check_host(cert, mysql->host, strlen(mysql->host), 0, 0) != 1
       && X509_check_ip_asc(cert, mysql->host, 0) != 1)
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
      goto error;
+    }
  #else
    x509sn= X509_get_subject_name(cert);

    if ((cn_pos= X509_NAME_get_index_by_NID(x509sn, NID_commonName, -1)) < 0)
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
      goto error;
+    }

    if (!(cn_entry= X509_NAME_get_entry(x509sn, cn_pos)))
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
      goto error;
+    }

    if (!(cn_asn1 = X509_NAME_ENTRY_get_data(cn_entry)))
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
      goto error;
+    }

    cn_str = (char *)ASN1_STRING_data(cn_asn1);

    /* Make sure there is no embedded \0 in the CN */
    if ((size_t)ASN1_STRING_length(cn_asn1) != strlen(cn_str))
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
      goto error;
+    }

    if (strcmp(cn_str, mysql->host))
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_HOST;
      goto error;
+    }
  #endif
    X509_free(cert);
-
+  }
  return 0;
 error:
+  if (cert)
    X509_free(cert);

-  pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
-                  ER(CR_SSL_CONNECTION_ERROR), "Validation of SSL server certificate failed");
  return 1;
 }

--- a/libmariadb/secure/schannel.c
+++ b/libmariadb/secure/schannel.c
@@ -32,6 +32,8 @@ char tls_library_version[] = "Schannel";
 #define PROT_TLS1_2 4
 #define PROT_TLS1_3 8

+static int ma_check_peer_cert_time(MARIADB_TLS *ctls);
+
 static struct
 {
  DWORD cipher_id;
@@ -374,7 +376,6 @@ my_bool ma_tls_connect(MARIADB_TLS *ctls)
  ALG_ID AlgId[MAX_ALG_ID];
  size_t i;
  DWORD protocol = 0;
-  int verify_certs;
  const CERT_CONTEXT* cert_context = NULL;

  if (!ctls)
@@ -448,14 +449,6 @@ my_bool ma_tls_connect(MARIADB_TLS *ctls)
  if (ma_schannel_client_handshake(ctls) != SEC_E_OK)
    goto end;

-  verify_certs =  mysql->options.ssl_ca || mysql->options.ssl_capath ||
-     !mysql->options.extension->tls_allow_invalid_server_cert;
-
-  if (verify_certs)
-  {
-    if (!ma_schannel_verify_certs(ctls, !mysql->options.extension->tls_allow_invalid_server_cert))
-      goto end;
-  }
  rc = 0;

 end:
@@ -516,10 +509,34 @@ my_bool ma_tls_close(MARIADB_TLS *ctls)
 }
 /* }}} */

-int ma_tls_verify_server_cert(MARIADB_TLS *ctls)
+int ma_tls_verify_server_cert(MARIADB_TLS *ctls, unsigned int verify_flags)
 {
-  /* Done elsewhere */
-  return 0;
+  MYSQL *mysql;
+  SC_CTX *sctx;
+  if (!ctls || !ctls->ssl || !ctls->pvio || !ctls->pvio->mysql)
+    return 1;
+
+  sctx= (SC_CTX *)ctls->ssl; 
+  mysql= ctls->pvio->mysql;
+
+  if (verify_flags & MARIADB_TLS_VERIFY_PERIOD)
+  {
+    if (ma_check_peer_cert_time(ctls))
+    {
+      mysql->net.tls_verify_status|= MARIADB_TLS_VERIFY_PERIOD;
+      return 1;
+    }
+  }
+
+  if (verify_flags & MARIADB_TLS_VERIFY_FINGERPRINT)
+  {
+    if (ma_pvio_tls_check_fp(ctls, mysql->options.extension->tls_fp, mysql->options.extension->tls_fp_list))
+    {
+      mysql->net.tls_verify_status |= MARIADB_TLS_VERIFY_FINGERPRINT;
+      return 1;
+    }
+  }
+  return ma_schannel_verify_certs(ctls, verify_flags);
 }

 static const char *cipher_name(const SecPkgContext_CipherInfo *CipherInfo)
@@ -566,6 +583,34 @@ unsigned char *ma_cert_blob_to_str(PCERT_NAME_BLOB cnblob)
  return str;
 }

+static int ma_check_peer_cert_time(MARIADB_TLS *ctls)
+{
+  PCCERT_CONTEXT pCertCtx= NULL;
+  SC_CTX *sctx;
+  PCERT_INFO pci= NULL;
+  FILETIME ft;
+  SYSTEMTIME st;
+
+  if (!ctls || !ctls->ssl || !ctls->pvio || !ctls->pvio->mysql)
+    return 1;
+  
+  sctx= (SC_CTX *)ctls->ssl;
+
+  if (QueryContextAttributes(&sctx->hCtxt, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (PVOID)&pCertCtx) != SEC_E_OK)
+    return 1;
+
+  pci= pCertCtx->pCertInfo;
+
+  GetSystemTime(&st);
+  SystemTimeToFileTime(&st, &ft);
+
+  if (CompareFileTime(&ft, &pci->NotBefore) == -1 ||
+      CompareFileTime(&pci->NotAfter, &ft) == -1)
+    return 1;
+
+  return 0;
+}
+
 static void ma_systime_to_tm(SYSTEMTIME sys_tm, struct tm *tm)
 {
  memset(tm, 0, sizeof(struct tm));
@@ -576,22 +621,42 @@ static void ma_systime_to_tm(SYSTEMTIME sys_tm, struct tm *tm)
  tm->tm_min = sys_tm.wMinute;
 }

-unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
+unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls, unsigned int hash_size)
 {
  PCCERT_CONTEXT pCertCtx= NULL;
-  SC_CTX *sctx= (SC_CTX *)ctls->ssl;
+  SC_CTX *sctx;
  PCERT_INFO pci= NULL;
  DWORD size´= 0;
  SYSTEMTIME tm;
-  char fp[33];
+  char fp[129];
+  unsigned int hash_alg;

-  if (!ctls || !sctx)
+  if (!ctls || !ctls->ssl || !ctls->pvio || !ctls->pvio->mysql)
    return 1;

-  /* Did we already read peer cert information ? */
-  if (ctls->cert_info.version)
-    return 0;
+  sctx= (SC_CTX *)ctls->ssl;

+  switch (hash_size) {
+    case 0:
+    case 256:
+      hash_alg= MA_HASH_SHA256;
+      break;
+    case 384:
+      hash_alg= MA_HASH_SHA384;
+      break;
+    case 512:
+      hash_alg= MA_HASH_SHA512;
+      break;
+    default:
+      my_set_error(ctls->pvio->mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                   ER(CR_SSL_CONNECTION_ERROR),
+                   "Cannot detect hash algorithm for fingerprint verification");
+      return 1;
+  }
+
+  /* Did we already read peer cert information ? */
+  if (!ctls->cert_info.version)
+  {
    if (QueryContextAttributes(&sctx->hCtxt, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (PVOID)&pCertCtx) != SEC_E_OK)
      return 1;

@@ -605,9 +670,9 @@ unsigned int ma_tls_get_peer_cert_info(MARIADB_TLS *ctls)
    ma_systime_to_tm(tm, &ctls->cert_info.not_before);
    FileTimeToSystemTime(&pci->NotAfter, &tm);
    ma_systime_to_tm(tm, &ctls->cert_info.not_after);
-
-  ma_tls_get_finger_print(ctls, MA_HASH_SHA256, fp, 33);
-  mysql_hex_string(ctls->cert_info.fingerprint, fp, 32);
+  }
+  ma_tls_get_finger_print(ctls, hash_alg, fp, sizeof(fp));
+  mysql_hex_string(ctls->cert_info.fingerprint, fp, (unsigned long)ma_hash_digest_size(hash_alg));

  return 0; 
 }
--- a/libmariadb/secure/schannel_certs.c
+++ b/libmariadb/secure/schannel_certs.c
@@ -33,6 +33,7 @@
 #define _WIN32_WINNT 0x0601
 #endif
 #include "schannel_certs.h"
+#include "ma_schannel.h"
 #include <malloc.h>
 #include <stdio.h>
 #include <string.h>
@@ -594,9 +595,8 @@ Verify server certificate against a wincrypt store
 SECURITY_STATUS schannel_verify_server_certificate(
  const CERT_CONTEXT* cert,
  HCERTSTORE store,
-  BOOL check_revocation,
  const char *server_name,
-  BOOL check_server_name,
+  unsigned int verify_flags,
  char* errmsg,
  size_t errmsg_len)
 {
@@ -605,7 +605,7 @@ SECURITY_STATUS schannel_verify_server_certificate(
  DWORD dwVerifyFlags;
  DWORD dwRevocationFlags;

-  if (check_server_name)
+  if (verify_flags & MARIADB_TLS_VERIFY_HOST)
  {
    int cchServerName = (int)strlen(server_name) + 1;
    wserver_name = (wchar_t*)LocalAlloc(0,sizeof(wchar_t) * cchServerName);
@@ -621,10 +621,14 @@ SECURITY_STATUS schannel_verify_server_certificate(

  dwVerifyFlags = 0;
  dwRevocationFlags = 0;
-  if (check_revocation)
+  if (verify_flags & MARIADB_TLS_VERIFY_REVOKED)
    dwRevocationFlags |= CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT | CERT_CHAIN_REVOCATION_CHECK_CACHE_ONLY;
-  if (!check_server_name)
+  if (!(verify_flags & MARIADB_TLS_VERIFY_HOST))
    dwVerifyFlags |= SECURITY_FLAG_IGNORE_CERT_CN_INVALID;
+  /* Period was already checked before */
+  dwVerifyFlags |= SECURITY_FLAG_IGNORE_CERT_DATE_INVALID;
+  if (!(verify_flags & MARIADB_TLS_VERIFY_TRUST))
+    dwVerifyFlags |= SECURITY_FLAG_IGNORE_UNKNOWN_CA;

  status = VerifyServerCertificate(cert, store, wserver_name ? wserver_name : L"SERVER_NAME",
    dwRevocationFlags, dwVerifyFlags, errmsg, errmsg_len);
--- a/libmariadb/secure/schannel_certs.h
+++ b/libmariadb/secure/schannel_certs.h
@@ -35,9 +35,8 @@ extern SECURITY_STATUS schannel_create_store(
 extern SECURITY_STATUS schannel_verify_server_certificate(
  const CERT_CONTEXT* cert,
  HCERTSTORE store,
-  BOOL check_revocation,
  const char* server_name,
-  BOOL  check_server_name,
+  unsigned int verify_flags,
  char* errmsg,
  size_t errmsg_len);

--- a/plugins/auth/my_auth.c
+++ b/plugins/auth/my_auth.c
@@ -18,14 +18,7 @@ extern unsigned char *mysql_net_store_length(unsigned char *packet, ulonglong le
 extern const char *disabled_plugins;

 #define hashing(p)  (p->interface_version >= 0x0101 && p->hash_password_bin)
-
-static int set_error_from_tls_self_signed_error(MYSQL *mysql)
-{
-  my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
-    ER(CR_SSL_CONNECTION_ERROR), mysql->net.tls_self_signed_error);
-  reset_tls_self_signed_error(mysql);
-  return 1;
-}
+#define password_and_hashing(m,p) ((m)->passwd && (m)->passwd[0] && hashing((p)))

 typedef struct {
  int (*read_packet)(struct st_plugin_vio *vio, uchar **buf);
@@ -67,6 +60,49 @@ auth_plugin_t mysql_native_password_client_plugin=
  native_password_hash
 };

+/**
+  Checks if self-signed certificate error should be ignored.
+*/
+static my_bool is_local_connection(MARIADB_PVIO *pvio)
+{
+  const char *hostname= pvio->mysql->host;
+  const char *local_host_names[]= {
+#ifdef _WIN32
+  /*
+   On Unix, we consider TCP connections with "localhost"
+   an insecure transport, for the single reason to run tests for
+   insecure transport on CI.This is artificial, but should be ok.
+   Default client connections use unix sockets anyway, so it
+   would not hurt much.
+
+   On Windows, the situation is quite different.
+   Default connections type is TCP, default host name is "localhost",
+   non-password plugin gssapi is common (every installation)
+   In this environment, there would be a lot of faux/disruptive
+   "self-signed certificates" errors there. Thus, "localhost" TCP
+   needs to be considered secure transport.
+  */
+  "localhost",
+#endif
+  "127.0.0.1", "::1", NULL};
+  int i;
+
+  if (pvio->type != PVIO_TYPE_SOCKET)
+  {
+    return TRUE;
+  }
+  if (!hostname)
+    return FALSE;
+  for (i= 0; local_host_names[i]; i++)
+  {
+    if (strcmp(hostname, local_host_names[i]) == 0)
+    {
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+

 static int native_password_auth_client(MYSQL_PLUGIN_VIO *vio, MYSQL *mysql)
 {
@@ -370,6 +406,7 @@ static int send_client_reply_packet(MCPVIO_EXT *mpvio,
  if (mysql->options.use_ssl &&
      (mysql->client_flag & CLIENT_SSL))
  {
+    unsigned int verify_flags= 0;
    /*
      Send mysql->client_flag, max_packet_size - unencrypted otherwise
      the server does not know we want to do SSL
@@ -382,13 +419,29 @@ static int send_client_reply_packet(MCPVIO_EXT *mpvio,
                          errno);
      goto error;
    }
+    mysql->net.tls_verify_status = 0;
    if (ma_pvio_start_ssl(mysql->net.pvio))
      goto error;
-    if (mysql->net.tls_self_signed_error &&
-        (!mysql->passwd || !mysql->passwd[0] || !hashing(mpvio->plugin)))
+
+    verify_flags= MARIADB_TLS_VERIFY_PERIOD | MARIADB_TLS_VERIFY_REVOKED;
+    if (have_fingerprint(mysql))
    {
-     /* cannot use auth to validate the cert */
-      set_error_from_tls_self_signed_error(mysql);
+      verify_flags|= MARIADB_TLS_VERIFY_FINGERPRINT;
+    } else {
+      verify_flags|= MARIADB_TLS_VERIFY_TRUST | MARIADB_TLS_VERIFY_HOST;
+    }
+
+    if (ma_pvio_tls_verify_server_cert(mysql->net.pvio->ctls, verify_flags) > MARIADB_TLS_VERIFY_OK)
+    {
+      if (mysql->net.tls_verify_status > MARIADB_TLS_VERIFY_TRUST ||
+          (mysql->options.ssl_ca || mysql->options.ssl_capath))
+        goto error;
+
+      if (is_local_connection(mysql->net.pvio))
+      {
+        CLEAR_CLIENT_ERROR(mysql);
+      }
+      else if (!password_and_hashing(mysql, mpvio->plugin))
        goto error;
    }
  }
@@ -769,8 +822,14 @@ retry:
      auth_plugin= &dummy_fallback_client_plugin;

    /* can we use this plugin with this tls server cert ? */
-    if (mysql->net.tls_self_signed_error && !hashing(auth_plugin))
-      return set_error_from_tls_self_signed_error(mysql);
+    if ((mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_TRUST) &&
+        !password_and_hashing(mysql, auth_plugin))
+    {
+      my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+                   ER(CR_SSL_CONNECTION_ERROR),
+                   "Certificate verification failure: The certificate is NOT trusted.");
+      return 1;
+    }
    goto retry;
  }
  /*
@@ -782,7 +841,9 @@ retry:
  if (ma_read_ok_packet(mysql, mysql->net.read_pos + 1, pkt_length))
    return -1;

-  if (!mysql->net.tls_self_signed_error)
+  if (!mysql->net.tls_verify_status ||
+      ((mysql->net.tls_verify_status & MARIADB_TLS_VERIFY_TRUST) &&
+       is_local_connection(mysql->net.pvio)))
    return 0;

  assert(mysql->options.use_ssl);
@@ -824,6 +885,9 @@ retry:
      return 0; /* phew. self-signed certificate is validated! */
  }

-  return set_error_from_tls_self_signed_error(mysql);
+  my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
+               ER(CR_SSL_CONNECTION_ERROR),
+               "Certificate verification failure: The certificate is NOT trusted.");
+  return 1;
 }

--- a/unittest/libmariadb/CMakeLists.txt
+++ b/unittest/libmariadb/CMakeLists.txt
@@ -19,6 +19,7 @@ ENDIF()

 ENABLE_TESTING()

+find_package (Python3 COMPONENTS Interpreter)

 INCLUDE_DIRECTORIES(${CC_SOURCE_DIR}/include
                    ${CC_BINARY_DIR}/include
@@ -26,6 +27,7 @@ INCLUDE_DIRECTORIES(${CC_SOURCE_DIR}/include
                    ${CC_SOURCE_DIR}/unittest/libmariadb)
 ADD_DEFINITIONS(-DLIBMARIADB)

+
 SET(API_TESTS "conc336" "bulk1" "performance" "basic-t" "fetch" "charset" "logs" "cursor" "errors" "view" "ps" "ps_bugs" "sp" "result" "connection" "misc" "ps_new" "thread" "features-10_2")
 IF(WITH_DYNCOL)
  SET(API_TESTS ${API_TESTS} "dyncol")
@@ -50,6 +52,15 @@ ENDIF()

 ADD_LIBRARY(ma_getopt ma_getopt.c)

+IF(${Python3_FOUND})
+  CONFIGURE_FILE(${CC_SOURCE_DIR}/unittest/libmariadb/tls.c.in
+                 ${CC_BINARY_DIR}/unittest/libmariadb/tls.c)
+
+  ADD_EXECUTABLE(tls ${CC_BINARY_DIR}/unittest/libmariadb/tls.c)
+  TARGET_LINK_LIBRARIES(tls cctap ma_getopt mariadbclient)
+  ADD_TEST(tls ${EXECUTABLE_OUTPUT_PATH}/tls)
+ENDIF()
+
 FOREACH(API_TEST ${API_TESTS})
  IF (NOT TARGET ${API_TEST})
    ADD_EXECUTABLE(${API_TEST} ${API_TEST}.c)
@@ -63,7 +74,17 @@ FOREACH(API_TEST ${API_TESTS})
  ENDIF()
 ENDFOREACH(API_TEST)

+
 FOREACH(API_TEST ${MANUAL_TESTS})
  ADD_EXECUTABLE(${API_TEST} ${API_TEST}.c)
  TARGET_LINK_LIBRARIES(${API_TEST} cctap ma_getopt mariadbclient)
 ENDFOREACH()
+
+SET(ADDITIONAL_FILES "tls_server.py" "certs/server-cert.pem"
+                     "certs/server-cert.crl" "certs/server-key.pem" "certs/cacert.pem")
+FOREACH(FILE ${ADDITIONAL_FILES})
+  CONFIGURE_FILE(${CC_SOURCE_DIR}/unittest/libmariadb/${FILE}
+                 ${CC_BINARY_DIR}/unittest/libmariadb/${FILE}
+                 COPYONLY)
+ENDFOREACH()
+
--- a/unittest/libmariadb/basic-t.c
+++ b/unittest/libmariadb/basic-t.c
@@ -44,7 +44,7 @@ static int test_conc75(MYSQL *my)
  mysql= mysql_init(NULL);

  mysql_options(mysql, MYSQL_OPT_RECONNECT, &reconnect);
-  my_test_connect(mysql, hostname, username, password, schema, port, socketname, 0| CLIENT_MULTI_RESULTS | CLIENT_REMEMBER_OPTIONS);
+  my_test_connect(mysql, hostname, username, password, schema, port, socketname, 0| CLIENT_MULTI_RESULTS | CLIENT_REMEMBER_OPTIONS, 1);

  rc= mysql_query(mysql, "DROP TABLE IF EXISTS a");
  check_mysql_rc(rc, mysql);
@@ -85,7 +85,7 @@ static int test_conc74(MYSQL *unused __attribute__((unused)))
  mysql= mysql_init(NULL);


-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, 0| CLIENT_MULTI_RESULTS | CLIENT_REMEMBER_OPTIONS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, 0| CLIENT_MULTI_RESULTS | CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -128,7 +128,7 @@ static int test_conc71(MYSQL *my)
  mysql_options(mysql, MYSQL_INIT_COMMAND, "/*!40101 set @@session.wait_timeout=28800 */");

  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));

  diag("kill server");

@@ -161,7 +161,7 @@ static int test_conc70(MYSQL *my)

  mysql_options(mysql, MYSQL_OPT_COMPRESS, (void *)1);
  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));

  rc= mysql_query(mysql, "DROP TABLE IF EXISTS t1");
  check_mysql_rc(rc, mysql);
@@ -223,7 +223,7 @@ static int test_conc68(MYSQL *my)
  mysql_query(my, "SET global max_allowed_packet=1024*1024*22");

  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));

  rc= mysql_query(mysql, "DROP TABLE IF EXISTS t1");
  check_mysql_rc(rc, mysql);
@@ -274,7 +274,7 @@ static int basic_connect(MYSQL *unused __attribute__((unused)))
  FAIL_IF(!my, "mysql_init() failed");

  FAIL_IF(!my_test_connect(my, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));

  rc= mysql_query(my, "SELECT @@version");
  check_mysql_rc(rc, my);
@@ -671,7 +671,7 @@ static int test_status(MYSQL *mysql)
 static int bug_conc1(MYSQL *mysql)
 {
  my_test_connect(mysql, hostname, username, password, schema,
-                     port, socketname, 0);
+                     port, socketname, 0, 1);
  diag("errno: %d", mysql_errno(mysql));
  FAIL_IF(mysql_errno(mysql) != CR_ALREADY_CONNECTED,
          "Expected errno=CR_ALREADY_CONNECTED");
@@ -688,7 +688,7 @@ static int test_options_initcmd(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_INIT_COMMAND, "INSERT INTO t1 VALUES (1),(2),(3)");
  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
                              port, socketname, 
-                              CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS), mysql_error(mysql));
+                              CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS, 1), mysql_error(mysql));

  rc= mysql_query(mysql, "SELECT a FROM t1");
  check_mysql_rc(rc, mysql);
@@ -734,7 +734,7 @@ static int test_reconnect_maxpackage(MYSQL *unused __attribute__((unused)))

  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
                              port, socketname,
-                              CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS), mysql_error(mysql));
+                              CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS, 1), mysql_error(mysql));
  mysql_options(mysql, MYSQL_OPT_RECONNECT, &reconnect);

  rc= mysql_query(mysql, "SELECT @@max_allowed_packet");
@@ -792,7 +792,7 @@ static int test_compressed(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_OPT_COMPRESS, (void *)1);
  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
                              port, socketname, 
-                              CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS), mysql_error(mysql));
+                              CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS, 1), mysql_error(mysql));
  mysql_options(mysql, MYSQL_OPT_RECONNECT, &reconnect);

  rc= mysql_query(mysql, "SHOW VARIABLES");
--- a/unittest/libmariadb/bulk1.c
+++ b/unittest/libmariadb/bulk1.c
@@ -1106,7 +1106,7 @@ static int bulk_with_unit_result_insert(MYSQL *my)
  stmt= mysql_stmt_init(mysql);
  mysql_options(mysql, MARIADB_OPT_BULK_UNIT_RESULTS, &unique_result);
  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                              port, socketname, 0), mysql_error(mysql));
+                              port, socketname, 0, 1), mysql_error(mysql));
  mysql_get_option(mysql, MARIADB_OPT_BULK_UNIT_RESULTS, &bool_val);
  FAIL_UNLESS(bool_val, "bool_val != true");

@@ -1223,7 +1223,7 @@ static int bulk_with_unit_result_delete(MYSQL *my)
  stmt= mysql_stmt_init(mysql);
  mysql_options(mysql, MARIADB_OPT_BULK_UNIT_RESULTS, &unique_result);
  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                              port, socketname, 0), mysql_error(mysql));
+                              port, socketname, 0, 1), mysql_error(mysql));

  if (!bulk_enabled)
    return SKIP;
@@ -1331,7 +1331,7 @@ static int bulk_with_unit_result_update(MYSQL *my)

  mysql_options(mysql, MARIADB_OPT_BULK_UNIT_RESULTS, &unique_result);
  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                              port, socketname, 0), mysql_error(mysql));
+                              port, socketname, 0, 1), mysql_error(mysql));

  if (!bulk_enabled)
    return SKIP;
--- a/unittest/libmariadb/certs/cacert.pem
+++ b/unittest/libmariadb/certs/cacert.pem
@@ -0,0 +1,121 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            5c:81:fd:b9:82:69:e0:46:8d:99:ed:d0:95:4b:d3:d6:62:8a:69:97
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN = cacert, C = FI, ST = Helsinki, L = Helsinki, O = MariaDB
+        Validity
+            Not Before: Mar  3 03:03:03 2020 GMT
+            Not After : Feb 27 03:03:03 2040 GMT
+        Subject: CN = cacert, C = FI, ST = Helsinki, L = Helsinki, O = MariaDB
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (4096 bit)
+                Modulus:
+                    00:bc:72:01:10:68:c1:df:fa:d1:77:55:7c:09:13:
+                    19:51:41:cd:ed:4f:51:43:22:e7:97:0e:94:fc:0d:
+                    1d:a9:c6:f3:17:79:31:6f:12:7a:9b:7f:87:e2:55:
+                    16:d5:a4:dd:6a:d3:5e:4f:e2:e0:bc:c4:9f:c5:95:
+                    1a:47:13:a5:cd:6d:f3:76:e2:9a:12:31:76:e4:f1:
+                    01:94:37:45:10:32:18:9e:cc:d8:7f:04:ca:18:97:
+                    bf:22:2e:51:ba:73:6f:46:50:36:fe:df:82:4c:8a:
+                    9e:34:be:44:f4:12:61:72:18:b3:81:b5:d9:b2:69:
+                    8f:7d:f4:8b:41:62:34:59:71:f7:e4:26:a6:cf:55:
+                    4d:d4:52:a3:37:24:bd:82:21:9f:d1:db:cd:e9:12:
+                    a9:cf:60:48:3d:da:ea:a0:a7:d0:57:16:68:49:e5:
+                    b4:e8:dc:d0:b0:12:b3:c7:1c:f1:b3:b1:eb:12:8b:
+                    c7:3e:3c:02:fe:f6:4c:a8:35:d8:cf:74:64:63:89:
+                    84:3e:75:88:a0:0b:80:5c:ea:68:b2:9c:bb:e3:ae:
+                    4f:cd:24:b9:97:89:95:4e:3f:78:48:ba:ad:97:4c:
+                    bf:f8:8b:14:80:f4:78:03:11:4b:a7:e3:99:1c:82:
+                    59:bf:b6:f3:3e:3e:db:db:38:73:91:8d:f0:6f:e5:
+                    5d:02:e7:c0:a5:8b:ad:69:f1:17:29:2c:16:41:ad:
+                    ac:0f:64:c8:f7:62:58:da:73:66:f7:91:2c:89:f7:
+                    80:6b:d7:91:f1:c8:4a:5a:c4:2d:3d:0b:18:83:f1:
+                    e9:74:2d:83:bb:09:46:bd:f0:40:ad:0b:dd:0c:45:
+                    64:8d:9e:cf:a7:a0:6c:d2:cc:f1:f9:05:15:7a:e3:
+                    02:15:b0:e6:99:cd:81:5b:dd:52:9b:c0:35:25:fa:
+                    4c:88:47:1d:16:19:9f:9d:f0:54:01:6e:20:6a:10:
+                    ab:4f:d2:a2:a7:31:db:6d:76:26:0d:35:9d:ac:1f:
+                    4e:4d:37:87:2c:78:26:d4:1f:f0:87:fc:f4:e2:2a:
+                    af:9a:a4:d6:69:93:16:4f:ed:fb:e0:78:99:36:49:
+                    d2:2e:7d:44:15:94:58:bd:ba:bc:d3:b9:75:5c:58:
+                    13:69:18:8e:5d:0e:c9:0c:dd:06:c4:7b:fc:34:3e:
+                    df:51:46:8d:5e:33:40:ba:39:75:9a:29:a5:f0:be:
+                    d3:a1:2c:72:88:85:4a:a0:2e:d9:71:15:30:49:57:
+                    f4:1b:73:e4:b3:b1:9e:3e:e6:0b:30:0a:eb:e9:cc:
+                    ec:98:4c:36:ea:58:8a:aa:b1:4b:b9:e1:5e:4a:d0:
+                    81:65:f0:ba:2c:b0:a6:8e:02:f1:c6:e0:78:b9:49:
+                    eb:8e:79
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                4D:FC:7A:19:F3:2B:0C:7D:F6:C0:7C:4D:F8:72:34:4C:8C:35:52:74
+            X509v3 Authority Key Identifier: 
+                keyid:4D:FC:7A:19:F3:2B:0C:7D:F6:C0:7C:4D:F8:72:34:4C:8C:35:52:74
+
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+    Signature Algorithm: sha256WithRSAEncryption
+         3c:e7:3a:e8:b6:d1:be:ca:27:ad:02:00:08:b7:1f:2d:e9:cd:
+         81:9f:98:f0:f0:a4:c5:dd:dc:94:a1:a6:bd:31:56:54:05:6a:
+         da:b1:1b:42:35:ef:f8:75:1c:0d:0f:00:77:24:a7:ef:5f:f1:
+         ce:38:3a:05:a7:22:a6:40:b6:6c:57:46:31:e8:ba:2f:b5:9e:
+         fb:7c:07:93:5c:cb:82:59:1a:2f:13:5b:6d:55:8d:d9:dd:ec:
+         44:b2:7f:89:26:37:da:fc:e8:aa:af:87:8b:5e:c3:3e:21:c2:
+         a0:ca:2a:49:78:fa:9d:10:5c:e8:2c:24:ac:e8:f3:61:25:cb:
+         86:6c:8f:1d:4c:2f:83:bd:d4:72:dc:54:1b:fa:3d:1a:d4:54:
+         a9:ac:87:70:ff:cf:53:26:1f:e7:11:bc:b3:89:d0:71:25:09:
+         d9:80:09:42:b1:5a:8d:01:a9:89:1e:2c:cc:89:e7:f8:c2:43:
+         4b:20:cd:ce:9c:2f:67:99:35:4f:e2:ec:00:07:3d:69:6e:9e:
+         48:93:d4:56:b1:0b:52:00:d9:86:05:1e:ea:64:68:a1:87:04:
+         0f:17:45:82:8e:f5:13:7a:90:79:c8:fd:42:e8:80:df:3b:46:
+         bc:39:c9:76:14:90:8e:cd:80:98:84:56:43:88:33:1e:ac:4a:
+         cb:48:8d:ff:35:d4:68:0e:ef:bf:1a:b5:34:17:7a:c8:c2:e8:
+         f0:18:f6:58:07:9b:09:9f:b5:e2:29:e2:5e:cb:b9:71:ce:13:
+         90:6d:b7:4e:23:31:bc:ab:17:b4:3d:96:17:4b:f8:01:49:b9:
+         0a:0c:73:1d:54:de:51:79:3a:fb:f0:b5:10:8d:38:ad:87:36:
+         0f:36:48:11:f7:1b:d6:2f:ed:a7:1d:73:74:45:19:69:1d:9f:
+         86:ec:a3:2b:8e:fd:5a:33:08:4d:17:41:df:57:8a:1e:99:c1:
+         bc:aa:15:a1:af:2c:23:67:4e:31:45:91:fb:8f:af:1e:19:a6:
+         0f:bb:d9:3a:55:cc:b0:a2:41:a5:99:20:cc:64:91:f7:8e:6b:
+         c4:ad:5a:c8:ca:3d:74:36:91:97:34:f1:f8:c5:22:87:6b:e3:
+         cf:9c:0a:75:5a:09:30:88:9d:07:99:2d:ef:87:75:45:ed:0f:
+         75:8a:88:6c:b0:7e:dc:c3:d4:50:c4:25:0c:de:f7:53:f6:12:
+         bd:5a:8b:81:3a:30:83:b7:66:5e:7e:8f:d8:65:ab:2a:fa:85:
+         d4:4b:61:fb:27:98:79:cb:d6:06:07:23:7f:d9:1d:79:3e:71:
+         a7:0c:c8:e8:0e:e0:40:66:4d:8d:0e:9c:41:c0:d2:2c:91:95:
+         63:d5:c4:12:cd:9b:bc:f4
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
--- a/unittest/libmariadb/certs/server-cert.crl
+++ b/unittest/libmariadb/certs/server-cert.crl
@@ -0,0 +1,17 @@
+-----BEGIN X509 CRL-----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+-----END X509 CRL-----
--- a/unittest/libmariadb/certs/server-cert.pem
+++ b/unittest/libmariadb/certs/server-cert.pem
@@ -0,0 +1,128 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 1 (0x1)
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN=cacert, C=FI, ST=Helsinki, L=Helsinki, O=MariaDB
+        Validity
+            Not Before: Mar  3 03:03:03 2020 GMT
+            Not After : Feb 27 03:03:03 2040 GMT
+        Subject: C=FI, ST=state or province within country, in other certificates in this file it is the same as L, L=location, usually an address but often ambiguously used, O=organization name, typically a company name, OU=organizational unit name, a division name within an organization, CN=localhost
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (4096 bit)
+                Modulus:
+                    00:c9:f9:46:27:69:68:4b:5a:26:dd:1f:98:0f:44:
+                    ba:40:83:ca:82:c2:7a:53:cc:b9:30:f1:ca:3e:e2:
+                    6d:de:3a:11:aa:ce:c5:90:27:e6:f3:4f:3b:e9:af:
+                    1a:ec:21:d7:ca:14:1f:f1:9b:cb:cd:7e:57:b4:c8:
+                    5d:6c:cd:5a:54:dd:8a:9a:a9:27:ef:49:d3:6c:ac:
+                    99:2d:dc:e5:c0:1e:3c:05:9f:c5:04:c7:2d:81:66:
+                    21:27:16:d6:c3:e4:97:53:db:21:a6:43:50:70:cb:
+                    2e:95:fb:da:52:55:27:1b:17:ef:19:83:eb:ff:a1:
+                    fc:62:63:ea:2f:fe:53:35:e6:d9:bc:03:2d:e5:c2:
+                    18:b1:29:91:e4:a4:79:2c:f1:05:dd:d5:3f:ff:b1:
+                    9e:64:8d:60:29:74:43:f0:3d:31:e7:78:ce:9f:17:
+                    74:e5:9f:fb:7b:69:a9:45:3b:e8:76:03:c6:ca:52:
+                    85:84:50:0d:2b:98:6f:ff:d8:41:66:6d:39:f6:1a:
+                    a3:61:e2:82:5f:dc:ec:ca:97:dc:b2:dc:cf:aa:97:
+                    ef:13:10:ea:fb:8f:99:91:bb:d9:e8:61:25:2d:68:
+                    04:af:2f:89:56:0d:89:90:77:e0:ad:c2:25:eb:3c:
+                    d2:4e:3d:ca:6e:ae:35:c8:f2:94:7a:09:74:d3:8e:
+                    73:30:e6:39:fe:b6:9c:c7:4d:23:4e:b0:bf:90:97:
+                    29:b2:b3:30:b2:bb:49:ae:47:09:fe:cd:23:3a:01:
+                    a4:ac:cb:53:25:74:98:27:20:85:6b:18:74:bb:1c:
+                    bf:ff:05:dc:06:7c:02:78:81:1e:96:ad:8f:c6:a2:
+                    0d:b3:5c:8e:ad:d5:fd:af:c5:8d:8b:9f:31:b1:4f:
+                    a7:1e:9b:cd:57:68:d5:ad:ed:4e:7b:5f:0d:0c:d2:
+                    47:85:b4:65:4b:23:1c:5b:a5:ec:88:fa:42:80:73:
+                    84:cb:75:05:a6:39:f1:e6:a9:4e:15:e6:2f:f7:61:
+                    0b:f3:08:cc:a6:2b:2b:64:6e:04:a1:fc:da:5e:34:
+                    ad:7c:54:be:85:e4:ed:64:74:31:30:2a:ed:ab:3e:
+                    d2:cd:c7:3e:de:18:04:8a:a7:bd:ad:52:74:13:b1:
+                    b0:7d:4d:7e:87:7b:cb:82:1f:29:11:e1:0e:4b:42:
+                    2b:83:e8:88:7e:92:80:20:eb:ee:da:d4:dd:1e:9c:
+                    54:5c:67:a7:00:5f:a1:b7:bf:5d:c0:5a:25:2a:c1:
+                    1e:7c:93:32:dd:17:c8:02:6d:1a:42:26:f6:50:01:
+                    4b:df:29:7f:72:f1:90:72:80:8a:ba:2f:8c:86:7d:
+                    56:45:c5:0e:82:16:d8:29:03:57:87:ce:22:1c:7f:
+                    31:a8:4f
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints: 
+                CA:FALSE
+            Netscape Comment: 
+                OpenSSL Generated Certificate
+            X509v3 Subject Key Identifier: 
+                DB:DF:8B:BC:C2:EE:A9:2A:4E:FD:0E:7A:5F:15:CF:94:A3:0C:CA:CC
+            X509v3 Authority Key Identifier: 
+                keyid:4D:FC:7A:19:F3:2B:0C:7D:F6:C0:7C:4D:F8:72:34:4C:8C:35:52:74
+
+    Signature Algorithm: sha256WithRSAEncryption
+         09:d1:af:0e:0b:e8:a2:5e:c8:ee:0a:9f:21:c3:2c:da:a4:38:
+         d5:cc:a6:ca:8e:ef:df:94:ab:32:5a:ec:32:84:01:7a:97:bb:
+         38:e0:a8:7d:20:d9:ca:51:3d:a3:74:f9:fe:85:14:26:95:37:
+         de:2d:74:7e:16:eb:14:14:1b:80:e9:12:54:de:cc:94:cc:38:
+         ca:df:9a:d0:ce:3e:6c:f1:de:e8:40:f5:3e:6e:c0:ee:05:50:
+         5a:38:4b:97:69:3c:7a:1f:a8:11:67:e5:9a:9e:50:2e:62:e8:
+         f8:bf:1a:54:84:ad:9d:0e:1e:ec:64:22:1b:38:85:87:0b:f3:
+         c7:47:80:aa:c1:99:72:a5:0d:fd:ce:2c:6e:0d:52:4d:d7:55:
+         2f:4e:52:6e:4a:b9:9a:61:34:08:59:d9:30:cc:30:4a:dc:35:
+         34:b9:b0:a4:97:a1:b8:d7:ce:ee:63:2d:3a:ad:73:9c:99:49:
+         11:0a:04:94:60:97:19:4f:4b:66:d4:fb:bf:14:46:39:27:da:
+         01:3f:d8:6a:46:cb:77:12:f2:77:86:3a:45:e1:f7:44:3d:2b:
+         3d:e6:26:06:5e:29:20:be:1f:aa:74:43:0c:85:79:e2:14:9c:
+         03:bf:49:21:64:7e:c3:4a:7b:a1:60:f6:ce:fb:7c:59:e4:65:
+         7c:fb:1e:84:38:53:ec:1f:80:c2:b5:f7:c2:0e:46:19:4b:4d:
+         a3:32:6e:59:40:32:9b:6b:2c:bb:fa:1a:89:2e:96:22:71:d5:
+         71:92:9b:0d:86:0e:60:60:19:ba:34:22:e1:f1:f3:c9:87:5c:
+         5c:f5:d3:52:1c:11:0d:d3:91:7a:6b:bd:6f:cc:ba:78:60:e0:
+         20:b4:c2:d1:91:70:5f:74:33:a1:bc:aa:db:d1:35:91:b5:cb:
+         46:a8:28:7a:26:fc:8c:6c:64:05:4d:73:f1:00:bb:eb:70:87:
+         fd:9f:04:55:8f:7b:00:b1:c0:50:09:3a:58:44:19:a7:bd:f1:
+         34:5b:4d:d9:10:6b:d5:38:fa:64:f5:d3:28:4f:c4:23:14:29:
+         98:3e:2f:c2:87:6f:69:a0:89:0e:ee:f7:c4:50:9e:33:b9:0a:
+         84:f0:c6:38:45:38:91:10:14:ac:c4:03:8e:4b:e2:61:f9:78:
+         85:02:b9:c6:d5:c2:9f:ba:ac:21:1a:3a:4e:1a:f8:a9:12:ae:
+         67:37:79:ce:ec:94:54:cf:28:c4:33:3b:45:23:d2:cb:37:3b:
+         09:ee:e2:c4:9f:12:dc:e3:8f:06:1d:d5:54:b7:73:2c:34:36:
+         97:41:91:81:30:06:2c:90:14:9b:aa:4e:33:2a:38:29:f5:3d:
+         f4:c7:f2:03:6d:d9:d7:3e
+-----BEGIN CERTIFICATE-----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+PfTH8gNt2dc+
+-----END CERTIFICATE-----
--- a/unittest/libmariadb/certs/server-key.pem
+++ b/unittest/libmariadb/certs/server-key.pem
@@ -0,0 +1,51 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIJKgIBAAKCAgEAyflGJ2loS1om3R+YD0S6QIPKgsJ6U8y5MPHKPuJt3joRqs7F
+kCfm80876a8a7CHXyhQf8ZvLzX5XtMhdbM1aVN2Kmqkn70nTbKyZLdzlwB48BZ/F
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+WJWdco8kyiWauoRBJuJJwRtTTMQ+JBiomOhDb1moQd19lNQiBjW5pTfr92NSVg==
+-----END RSA PRIVATE KEY-----
--- a/unittest/libmariadb/charset.c
+++ b/unittest/libmariadb/charset.c
@@ -757,7 +757,7 @@ static int charset_auto(MYSQL *my __attribute__((unused)))
  mysql_options(mysql, MYSQL_SET_CHARSET_NAME, "auto");

  FAIL_IF(!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0), 
+                             password, schema, port, socketname, 0, 1), 
         mysql_error(mysql));

  csname1= mysql_character_set_name(mysql);
--- a/unittest/libmariadb/connection.c
+++ b/unittest/libmariadb/connection.c
@@ -65,7 +65,7 @@ static int test_conc66(MYSQL *my)
  rc= mysql_query(my, "FLUSH PRIVILEGES");
  check_mysql_rc(rc, my);
  if (!my_test_connect(mysql, hostname, NULL,
-                             NULL, schema, port, socketname, 0))
+                             NULL, schema, port, socketname, 0, 1))
  {
    diag("user: %s", mysql->options.user);
    diag("Error: %s", mysql_error(mysql));
@@ -463,7 +463,7 @@ static int test_bug31669(MYSQL *mysql)
 static int test_bug33831(MYSQL *mysql)
 {
  FAIL_IF(my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0), 
+                             password, schema, port, socketname, 0, 1), 
         "Error expected");
  
  return OK;
@@ -493,7 +493,7 @@ static int test_opt_reconnect(MYSQL *mysql)

  if (!(my_test_connect(mysql, hostname, username,
                           password, schema, port,
-                           socketname, 0)))
+                           socketname, 0, 1)))
  {
    diag("connection failed");
    mysql_close(mysql);
@@ -513,7 +513,7 @@ static int test_opt_reconnect(MYSQL *mysql)

  if (!(my_test_connect(mysql, hostname, username,
                           password, schema, port,
-                           socketname, 0)))
+                           socketname, 0, 1)))
  {
    diag("connection failed");
    mysql_close(mysql);
@@ -544,7 +544,7 @@ static int test_compress(MYSQL *mysql)

  if (!(my_test_connect(mysql, hostname, username,
                           password, schema, port,
-                           socketname, 0)))
+                           socketname, 0, 1)))
  {
    diag("connection failed");
    return FAIL;
@@ -583,7 +583,7 @@ static int test_reconnect(MYSQL *mysql)

  if (!(my_test_connect(mysql1, hostname, username,
                           password, schema, port,
-                           socketname, 0)))
+                           socketname, 0, 1)))
  {
    diag("connection failed");
    return FAIL;
@@ -647,14 +647,14 @@ int test_conc26(MYSQL *unused __attribute__((unused)))
  MYSQL *mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_SET_CHARSET_NAME, "ascii");

-  FAIL_IF(my_test_connect(mysql, hostname, "notexistinguser", "password", schema, port, socketname, CLIENT_REMEMBER_OPTIONS),
+  FAIL_IF(my_test_connect(mysql, hostname, "notexistinguser", "password", schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1),
          "Error expected");
  FAIL_IF(!mysql->options.charset_name || strcmp(mysql->options.charset_name, "ascii") != 0,
          "expected charsetname=ascii");
  mysql_close(mysql);

  mysql= mysql_init(NULL);
-  FAIL_IF(my_test_connect(mysql, hostname, "notexistinguser", "password", schema, port, socketname, 0), 
+  FAIL_IF(my_test_connect(mysql, hostname, "notexistinguser", "password", schema, port, socketname, 0, 1), 
          "Error expected");
  FAIL_IF(mysql->options.charset_name, "Error: options not freed");
  mysql_close(mysql);
@@ -669,7 +669,7 @@ int test_connection_timeout(MYSQL *unused __attribute__((unused)))
  MYSQL *mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_OPT_CONNECT_TIMEOUT, (unsigned int *)&timeout);
  start= time(NULL);
-  if (my_test_connect(mysql, "192.168.1.101", "notexistinguser", "password", schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (my_test_connect(mysql, "192.168.1.101", "notexistinguser", "password", schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Error expected - maybe you have to change hostname");
    return FAIL;
@@ -697,7 +697,7 @@ int test_connection_timeout2(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_INIT_COMMAND, "set @a:=SLEEP(7)");
  mysql_options(mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &no);
  start= time(NULL);
-  if (my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
  elapsed= time(NULL) - start;
  diag("elapsed: %lu", (unsigned long)elapsed);
@@ -723,7 +723,7 @@ int test_connection_timeout3(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_OPT_WRITE_TIMEOUT, (unsigned int *)&read_write_timeout);
  mysql_options(mysql, MYSQL_INIT_COMMAND, "set @a:=SLEEP(6)");
  start= time(NULL);
-  if (my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("timeout error expected");
    elapsed= time(NULL) - start;
@@ -740,7 +740,7 @@ int test_connection_timeout3(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_OPT_READ_TIMEOUT, (unsigned int *)&read_write_timeout);
  mysql_options(mysql, MYSQL_OPT_WRITE_TIMEOUT, (unsigned int *)&read_write_timeout);

-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -801,7 +801,7 @@ static int test_wrong_bind_address(MYSQL *unused __attribute__((unused)))

  mysql_options(mysql, MYSQL_OPT_BIND, bind_addr);
  if (my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error expected");
    mysql_close(mysql);
@@ -848,7 +848,7 @@ static int test_bind_address(MYSQL *my)
  mysql_options(mysql, MYSQL_OPT_BIND, bind_addr);

  if (!my_test_connect(mysql, bind_addr, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s\n", mysql_error(mysql));
    mysql_close(mysql);
@@ -1081,7 +1081,7 @@ static int test_unix_socket_close(MYSQL *unused __attribute__((unused)))

  for (i=0; i < 10000; i++)
  {
-    my_test_connect(mysql, "localhost", "user", "passwd", NULL, 0, "./dummy_sock", 0);
+    my_test_connect(mysql, "localhost", "user", "passwd", NULL, 0, "./dummy_sock", 0, 1);
    /* check if we run out of sockets */
    if (mysql_errno(mysql) == 2001)
    {
@@ -1194,7 +1194,7 @@ static int test_auth256(MYSQL *my)
  rc= mysql_query(my, query);
  check_mysql_rc(rc, my);

-  if (!my_test_connect(mysql, hostname, "sha256user", "foo", NULL, port, socketname, 0))
+  if (!my_test_connect(mysql, hostname, "sha256user", "foo", NULL, port, socketname, 0, 1))
  {
    diag("error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -1204,7 +1204,7 @@ static int test_auth256(MYSQL *my)

  mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_SERVER_PUBLIC_KEY, "rsa_public_key.pem");
-  if (!my_test_connect(mysql, hostname, "sha256user", "foo", NULL, port, socketname, 0))
+  if (!my_test_connect(mysql, hostname, "sha256user", "foo", NULL, port, socketname, 0, 1))
  {
    diag("error: %s", mysql_error(mysql));
    diag("host: %s", this_host);
@@ -1240,7 +1240,7 @@ static int test_mdev13100(MYSQL *my __attribute__((unused)))
  check_mysql_rc(rc, mysql);

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -1265,7 +1265,7 @@ static int test_mdev13100(MYSQL *my __attribute__((unused)))
  check_mysql_rc(rc, mysql);

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -1292,7 +1292,7 @@ if (!(fp= fopen("./mdev13100.cnf", "w")))
  check_mysql_rc(rc, mysql);

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -1322,7 +1322,7 @@ if (!(fp= fopen("./mdev13100.cnf", "w")))
  check_mysql_rc(rc, mysql);

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -1350,7 +1350,7 @@ if (!(fp= fopen("./mdev13100.cnf", "w")))
  check_mysql_rc(rc, mysql);

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -1373,7 +1373,7 @@ static int test_conc276(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_OPT_SSL_ENFORCE, &val);
  mysql_options(mysql, MYSQL_OPT_RECONNECT, &val);

-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, 0))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, 0, 1))
  {
    diag("Connection failed. Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -1423,7 +1423,7 @@ static int test_expired_pw(MYSQL *my)
  mysql= mysql_init(NULL);

  my_test_connect(mysql, hostname, "foo", "foo", schema,
-                  port, socketname, 0);
+                  port, socketname, 0, 1);

  FAIL_IF(!mysql_errno(mysql), "Error expected");
  mysql_close(mysql);
@@ -1432,7 +1432,7 @@ static int test_expired_pw(MYSQL *my)
  mysql_optionsv(mysql, MYSQL_OPT_CAN_HANDLE_EXPIRED_PASSWORDS, &expire);

  my_test_connect(mysql, hostname, "foo", "foo", schema,
-                  port, socketname, 0);
+                  port, socketname, 0, 1);

  /* we should be in sandbox mode now, only set commands should be allowed */
  rc= mysql_query(mysql, "DROP TABLE IF EXISTS t1");
@@ -1503,7 +1503,7 @@ static int test_conc317(MYSQL *unused __attribute__((unused)))

  mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "");
  my_test_connect(mysql, hostname, username, password,
-                  schema, port, socketname, 0);
+                  schema, port, socketname, 0, 1);

  remove(cnf_file1);

@@ -1551,7 +1551,7 @@ static int test_conc327(MYSQL *unused __attribute__((unused)))
  mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "");
  my_test_connect(mysql, hostname, username, password,
-                  schema, port, socketname, 0);
+                  schema, port, socketname, 0, 1);

  remove(cnf_file1);
  remove(cnf_file2);
@@ -1575,7 +1575,7 @@ static int test_conc327(MYSQL *unused __attribute__((unused)))
  mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_READ_DEFAULT_FILE, cnf_file2);
  my_test_connect(mysql, hostname, username, password,
-                  schema, port, socketname, 0);
+                  schema, port, socketname, 0, 1);

  remove(cnf_file1);
  remove(cnf_file2);
@@ -1601,7 +1601,7 @@ static int test_conc332(MYSQL *unused __attribute__((unused)))
  mysql_options(mysql, MYSQL_SET_CHARSET_NAME, "utf8mb4");

  my_test_connect(mysql, hostname, username, password, schema,
-                  port, socketname, 0);
+                  port, socketname, 0, 1);

  FAIL_IF(mysql_errno(mysql), "Error during connect");

@@ -1640,7 +1640,7 @@ static int test_conc351(MYSQL *unused __attribute__((unused)))
  ulong capabilities= 0;

  my_test_connect(mysql, hostname, username, password, schema,
-                  port, socketname, 0);
+                  port, socketname, 0, 1);

  FAIL_IF(mysql_errno(mysql), "Error during connect");

@@ -1690,7 +1690,7 @@ static int test_conc312(MYSQL *my)
  check_mysql_rc(rc, my);

  mysql= mysql_init(NULL);
-  if (!my_test_connect(mysql, hostname, "foo", "foo", schema, port, socketname, 0))
+  if (!my_test_connect(mysql, hostname, "foo", "foo", schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    return FAIL;
@@ -1749,7 +1749,7 @@ static int test_conc366(MYSQL *mysql)
  my= mysql_init(NULL);
  if (plugindir)
    mysql_options(my, MYSQL_PLUGIN_DIR, plugindir);
-  if (!my_test_connect(my, hostname, "ede", "MySup8%rPassw@ord", schema, port, socketname, 0))
+  if (!my_test_connect(my, hostname, "ede", "MySup8%rPassw@ord", schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(my));
    return FAIL;
@@ -1811,7 +1811,7 @@ static int test_conc443(MYSQL *my __attribute__((unused)))
  mysql_options(mysql, MYSQL_INIT_COMMAND, "set @a:=3");
  mysql_options(mysql, MYSQL_OPT_RECONNECT, &x);

-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Connection failed. Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -1857,7 +1857,7 @@ static int test_default_auth(MYSQL *my __attribute__((unused)))
  mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_DEFAULT_AUTH, "mysql_clear_password");

-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Connection failed. Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -1868,7 +1868,7 @@ static int test_default_auth(MYSQL *my __attribute__((unused)))
  mysql= mysql_init(NULL);
  mysql_options(mysql, MYSQL_DEFAULT_AUTH, "caching_sha2_password");

-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Connection failed. Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -1926,7 +1926,7 @@ static int test_conc490(MYSQL *my __attribute__((unused)))
  MYSQL *mysql= mysql_init(NULL);

  if (!my_test_connect(mysql, hostname, username,
-                             password, NULL, port, socketname, CLIENT_CONNECT_WITH_DB))
+                             password, NULL, port, socketname, CLIENT_CONNECT_WITH_DB, 1))
  {
    diag("error: %s\n", mysql_error(mysql));
    return FAIL;
@@ -1961,7 +1961,7 @@ static int test_conc544(MYSQL *mysql)
  check_mysql_rc(rc, mysql);

  if (my_test_connect(my, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("error expected (restricted auth)");
    return FAIL;
@@ -1984,7 +1984,7 @@ static int test_conc544(MYSQL *mysql)
  if (plugindir)
    mysql_optionsv(my, MYSQL_PLUGIN_DIR, plugindir);
  mysql_optionsv(my, MARIADB_OPT_RESTRICTED_AUTH, "client_ed25519, mysql_native_password");
-  if (!my_test_connect(my, hostname, "ede", "MySup8%rPassw@ord", schema, port, socketname, 0))
+  if (!my_test_connect(my, hostname, "ede", "MySup8%rPassw@ord", schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(my));
    return FAIL;
@@ -2059,7 +2059,7 @@ static int test_conn_str_1(MYSQL *my __attribute__((unused)))
  rc= mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "");
  check_mysql_rc(rc, mysql);

-  if (!my_test_connect(mysql, NULL, NULL, NULL, NULL, 0, NULL, 0))
+  if (!my_test_connect(mysql, NULL, NULL, NULL, NULL, 0, NULL, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    remove("./conc274.cnf");
@@ -2102,7 +2102,7 @@ static int test_conc365(MYSQL *my __attribute__((unused)))
  mysql= mysql_init(NULL);
  snprintf(tmp, sizeof(tmp) -1, "127.0.0.1:3300,%s:%d", hostname ? hostname : "localhost", port);
  if (!my_test_connect(mysql, tmp, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    rc= FAIL;
@@ -2116,7 +2116,7 @@ static int test_conc365(MYSQL *my __attribute__((unused)))
  mysql= mysql_init(NULL);
  mysql_options(mysql, MARIADB_OPT_HOST, tmp);
  if (!my_test_connect(mysql, NULL, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    rc= FAIL;
@@ -2151,13 +2151,14 @@ static int test_conc365_reconnect(MYSQL *my)
  }

  if (!my_test_connect(mysql, tmp, username,
-                             password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+                             password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    rc= FAIL;
  }

  sprintf(tmp, "KILL %ld", mysql_thread_id(mysql));
+  diag("KILL %ld", mysql_thread_id(mysql));

  rc= mysql_query(my, tmp);
  check_mysql_rc(rc, my);
@@ -2232,7 +2233,7 @@ static int test_status_callback(MYSQL *my __attribute__((unused)))
  rc= mysql_optionsv(mysql, MARIADB_OPT_STATUS_CALLBACK, my_status_callback, &data);

  if (!my_test_connect(mysql, hostname, username,
-                      password, NULL, port, socketname, 0))
+                      password, NULL, port, socketname, 0, 1))
  {
    diag("error1: %s", mysql_error(mysql));
    return FAIL;
@@ -2278,7 +2279,7 @@ static int test_conc632(MYSQL *my __attribute__((unused)))
  MYSQL *mysql= mysql_init(NULL);
  int rc;

-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_REMEMBER_OPTIONS, 1))
  {
    diag("Connection failed. Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -2329,7 +2330,7 @@ static int test_x509(MYSQL *my __attribute__((unused)))
  mysql_options(mysql1, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify);
  if (!(my_test_connect(mysql1, hostname, username,
                           password, schema, port,
-                           socketname, 0)))
+                           socketname, 0, 1)))
  {
    diag("connection failed");
    return FAIL;
@@ -2339,7 +2340,7 @@ static int test_x509(MYSQL *my __attribute__((unused)))
  mysql_options(mysql2, MARIADB_OPT_TLS_PEER_FP, info->fingerprint);
  if (!(my_test_connect(mysql2, hostname, username,
                           password, schema, port,
-                           socketname, 0)))
+                           socketname, 0, 1)))
  {
    diag("connection failed");
    return FAIL;
@@ -2363,7 +2364,7 @@ static int test_conc505(MYSQL *my __attribute__((unused)))

 #define CLIENT_DEPRECATE_EOF (1ULL << 24)

-  if (my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_DEPRECATE_EOF))
+  if (my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_DEPRECATE_EOF, 1))
  {
    diag("Error expected: Invalid client flag");
    mysql_close(mysql);
@@ -2371,7 +2372,7 @@ static int test_conc505(MYSQL *my __attribute__((unused)))
  }
  diag("Error (expected): %s", mysql_error(mysql));
  FAIL_IF(mysql_errno(mysql) != CR_INVALID_CLIENT_FLAG, "Wrong error number");
-  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS))
+  if (!my_test_connect(mysql, hostname, username, password, schema, port, socketname, CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
--- a/unittest/libmariadb/misc.c
+++ b/unittest/libmariadb/misc.c
@@ -991,7 +991,7 @@ static int test_connect_attrs(MYSQL *my)
  mysql_options4(mysql, MYSQL_OPT_CONNECT_ATTR_ADD, "foo2", "bar2");

  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));

  if (!(mysql->server_capabilities & CLIENT_CONNECT_ATTRS))
  {
@@ -1041,7 +1041,7 @@ static int test_conc117(MYSQL *unused __attribute__((unused)))
  MYSQL *my= mysql_init(NULL);
  SKIP_MAXSCALE;
  FAIL_IF(!my_test_connect(my, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));
  
  mysql_kill(my, mysql_thread_id(my));

@@ -1060,7 +1060,7 @@ static int test_read_timeout(MYSQL *unused __attribute__((unused)))
  SKIP_MAXSCALE;
  mysql_options(my, MYSQL_OPT_READ_TIMEOUT, &timeout);
  FAIL_IF(!my_test_connect(my, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));
 
  rc= mysql_query(my, "SELECT SLEEP(50)");

@@ -1136,7 +1136,7 @@ static int test_remote2(MYSQL *my)
  mysql_options(mysql, MYSQL_READ_DEFAULT_FILE, "http://localhost/test.cnf");
  mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "test");
  my_test_connect(mysql, hostname, username, password, schema,
-                         0, socketname, 0), mysql_error(my);
+                         0, socketname, 0, 1), mysql_error(my);
  diag("port: %d", mysql->port);
  mysql_close(mysql);
  return OK;
@@ -1177,7 +1177,7 @@ static int test_mdev12965(MYSQL *unused __attribute__((unused)))

  mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "");
  my_test_connect(mysql, hostname, username, password,
-                  schema, port, socketname, 0);
+                  schema, port, socketname, 0, 1);

  remove(cnf_file1);

@@ -1461,7 +1461,7 @@ static int test_conc395(MYSQL *unused __attribute__((unused)))

  mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "");
  my_test_connect(mysql, hostname, username, password,
-                  schema, port, socketname, 0);
+                  schema, port, socketname, 0, 1);

  remove(cnf_file1);

@@ -1501,7 +1501,7 @@ static int test_sslenforce(MYSQL *unused __attribute__((unused)))

  mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "");
  my_test_connect(mysql, hostname, username, password,
-                  schema, port, socketname, 0);
+                  schema, port, socketname, 0, 1);

  remove(cnf_file1);

--- a/unittest/libmariadb/my_test.h
+++ b/unittest/libmariadb/my_test.h
@@ -219,12 +219,13 @@ MYSQL *my_test_connect(MYSQL *mysql,
                       const char *db,
                       unsigned int port,
                       const char *unix_socket,
-                       unsigned long clientflag);
+                       unsigned long clientflag,
+                       my_bool auto_fingerprint);

 static const char *schema = 0;
 static char *hostname = 0;
 static char *password = 0;
-static char fingerprint[65]= {0};
+static char fingerprint[129]= {0};
 static unsigned int port = 0;
 static unsigned int ssl_port = 0;
 static char *socketname = 0;
@@ -542,7 +543,7 @@ MYSQL *test_connect(struct my_tests_st *test)
    }
  }
  if (!(my_test_connect(mysql, hostname, username, password,
-                           schema, port, socketname, (test) ? test->connect_flags:0)))
+                           schema, port, socketname, (test) ? test->connect_flags:0, 1)))
  {
    diag("Couldn't establish connection to server %s. Error (%d): %s", 
                   hostname, mysql_errno(mysql), mysql_error(mysql));
@@ -654,12 +655,18 @@ MYSQL *my_test_connect(MYSQL *mysql,
                       const char *db,
                       unsigned int port,
                       const char *unix_socket,
-                       unsigned long clientflag)
+                       unsigned long clientflag,
+                       my_bool auto_fingerprint)
 {
+  char *have_fp;
  if (force_tls)
    mysql_options(mysql, MYSQL_OPT_SSL_ENFORCE, &force_tls);
-  if (fingerprint[0])
+  mysql_get_optionv(mysql, MARIADB_OPT_SSL_FP, &have_fp);
+  if (fingerprint[0] && auto_fingerprint)
+  {
+    printf("setting fingerprint\n");
    mysql_options(mysql, MARIADB_OPT_SSL_FP, fingerprint);
+  }
  if (!mysql_real_connect(mysql, host, user, passwd, db, port, unix_socket, clientflag))
  {
    diag("error: %s", mysql_error(mysql));
@@ -712,11 +719,12 @@ void run_tests(struct my_tests_st *test) {
    mysql_free_result(res);
    if (mysql_get_ssl_cipher(mysql))
      diag("Cipher in use: %s", mysql_get_ssl_cipher(mysql));
-    mariadb_get_infov(mysql, MARIADB_TLS_PEER_CERT_INFO, &info);
+    mariadb_get_infov(mysql, MARIADB_TLS_PEER_CERT_INFO, &info, 384);
    if (info)
    {
      strcpy(fingerprint, info->fingerprint);
      diag("Peer certificate fingerprint: %s", fingerprint);
+      diag("Subject: %s", info->subject);
      diag("--------------------");
    }
  }
--- a/unittest/libmariadb/ps.c
+++ b/unittest/libmariadb/ps.c
@@ -63,7 +63,7 @@ static int test_conc83(MYSQL *unused __attribute__((unused)))

  mysql_options(mysql, MYSQL_OPT_RECONNECT, &reconnect);
  FAIL_IF(!(my_test_connect(mysql, hostname, username, password,
-                           schema, port, socketname, 0)), "my_test_connect failed");
+                           schema, port, socketname, 0, 1)), "my_test_connect failed");

  /* 1. Status is inited, so prepare should work */

@@ -845,7 +845,7 @@ static int test_prepare_alter(MYSQL *mysql)
  mysql_new= mysql_init(NULL);
  FAIL_IF(!mysql_new, "mysql_init failed");
  FAIL_IF(!(my_test_connect(mysql_new, hostname, username, password,
-                           schema, port, socketname, 0)), "my_test_connect failed");
+                           schema, port, socketname, 0, 1)), "my_test_connect failed");
  rc= mysql_query(mysql_new, "ALTER TABLE test_prep_alter change id id_new varchar(20)");
  diag("Error: %d %s", mysql_errno(mysql_new), mysql_error(mysql_new));
  check_mysql_rc(rc, mysql_new);
--- a/unittest/libmariadb/rpl_api.c
+++ b/unittest/libmariadb/rpl_api.c
@@ -44,7 +44,7 @@ static int test_rpl_async(MYSQL *my __attribute__((unused)))
    return SKIP;

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -112,7 +112,7 @@ static int test_rpl_semisync(MYSQL *my __attribute__((unused)))
    return SKIP;

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -189,7 +189,7 @@ static int test_conc467(MYSQL *my __attribute__((unused)))
    return SKIP;

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -271,7 +271,7 @@ static int test_conc592(MYSQL *my __attribute__((unused)))
    return SKIP;

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -279,7 +279,7 @@ static int test_conc592(MYSQL *my __attribute__((unused)))
  }

  if (!my_test_connect(mysql_check, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
@@ -356,7 +356,7 @@ static int test_conc689(MYSQL *my __attribute__((unused)))
    return SKIP;

  if (!my_test_connect(mysql, hostname, username,
-                             password, schema, port, socketname, 0))
+                             password, schema, port, socketname, 0, 1))
  {
    diag("Error: %s", mysql_error(mysql));
    mysql_close(mysql);
--- a/unittest/libmariadb/thread.c
+++ b/unittest/libmariadb/thread.c
@@ -15,7 +15,7 @@ static int basic_connect(MYSQL *unused __attribute__((unused)))
  FAIL_IF(!my, "mysql_init() failed");

  FAIL_IF(!my_test_connect(my, hostname, username, password, schema,
-                         port, socketname, 0), mysql_error(my));
+                         port, socketname, 0, 1), mysql_error(my));

  rc= mysql_query(my, "SELECT @@version");
  check_mysql_rc(rc, my);
@@ -136,7 +136,7 @@ DWORD WINAPI thread_conc27(void)
  mysql_thread_init();
  mysql= mysql_init(NULL);
  if(!my_test_connect(mysql, hostname, username, password, schema,
-          port, socketname, 0))
+          port, socketname, 0, 1))
  {
    diag(">Error: %s", mysql_error(mysql));
    mysql_close(mysql);
--- a/unittest/libmariadb/tls.c.in
+++ b/unittest/libmariadb/tls.c.in
@@ -0,0 +1,718 @@
+/*
+Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+
+The MySQL Connector/C is licensed under the terms of the GPLv2
+<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
+MySQL Connectors. There are special exceptions to the terms and
+conditions of the GPLv2 as it is applied to this software, see the
+FLOSS License Exception
+<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
+
+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 St, Fifth Floor, Boston, MA 02110-1301  USA
+*/
+#include "my_test.h"
+#include "ma_common.h"
+#include "ma_pvio.h"
+
+#include <mysql/client_plugin.h>
+
+#ifdef HAVE_GNUTLS
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <gnutls/abstract.h>
+#elif HAVE_OPENSSL
+#include <openssl/ssl.h>
+#endif
+
+#define CHECK_TLS_FLAGS(m, flag, text) \
+{\
+  unsigned int status;\
+  mariadb_get_infov(mysql, MARIADB_TLS_VERIFY_STATUS, &status);\
+  FAIL_IF(!(status & (flag)), (text));\
+}
+
+#define CHECK_NO_TLS_FLAGS(m)\
+{\
+  unsigned int status;\
+  mariadb_get_infov(mysql, MARIADB_TLS_VERIFY_STATUS, &status);\
+  FAIL_IF(status), "Expected MARIADB_TLS_VERIFY_OK");\
+}
+
+my_bool auto_generated_cert= 0;
+my_bool ignore_self_signed= 0;
+
+static char *tls_dummy_host= NULL;
+static int tls_dummy_port= 0;
+
+static my_bool ignore_self_signed_cert_error(MYSQL *mysql)
+{
+  const char *hostname= mysql->host;
+  const char *local_host_names[]= {
+#ifdef _WIN32
+  /*
+   On Unix, we consider TCP connections with "localhost"
+   an insecure transport, for the single reason to run tests for
+   insecure transport on CI.This is artificial, but should be ok.
+   Default client connections use unix sockets anyway, so it
+   would not hurt much.
+
+   On Windows, the situation is quite different.
+   Default connections type is TCP, default host name is "localhost",
+   non-password plugin gssapi is common (every installation)
+   In this environment, there would be a lot of faux/disruptive
+   "self-signed certificates" errors there. Thus, "localhost" TCP
+   needs to be considered secure transport.
+  */
+  "localhost",
+#endif
+  "127.0.0.1", "::1", NULL};
+  int i;
+
+  /* if CA or CAPath was specified, we don't ignore self signed
+     certificates */
+  if (mysql->options.ssl_ca ||
+      mysql->options.ssl_capath)
+    return FALSE;
+
+  if (mysql->net.pvio->type != PVIO_TYPE_SOCKET)
+  {
+    return TRUE;
+  }
+  if (!hostname)
+    return FALSE;
+  for (i= 0; local_host_names[i]; i++)
+  {
+    if (strcmp(hostname, local_host_names[i]) == 0)
+    {
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+static int test_start_tls_server(MYSQL *my __attribute__((unused)))
+{
+#ifdef WIN32
+  STARTUPINFO si;
+  PROCESS_INFORMATION pi;
+  char szCmdline[1024];
+
+  snprintf(szCmdline, sizeof(szCmdline), "%s tls_server.py --host=%s --port=%d", "@Python3_EXECUTABLE@", tls_dummy_host, tls_dummy_port);
+
+  ZeroMemory(&si, sizeof(si));
+  ZeroMemory(&pi, sizeof(pi));
+
+  GetStartupInfo(&si);
+  si.cb = sizeof(STARTUPINFO);
+  si.wShowWindow = SW_SHOWDEFAULT;
+
+  if( !CreateProcessA(NULL,
+        szCmdline,
+        NULL,
+        NULL,
+        FALSE,
+        CREATE_NEW_CONSOLE,
+        NULL,
+        NULL,
+        &si,
+        &pi)
+    )
+  {
+    diag("couldn't start tls_server. Error %d", GetLastError());
+    return FAIL;
+  }
+#else
+  pid_t tls_server_pid;
+
+  if (!(tls_server_pid= fork()))
+  {
+    char hostname[1024], port[128];
+
+    snprintf(hostname, sizeof(hostname), "--host=%s", tls_dummy_host);
+    snprintf(port, sizeof(port), "--port=%d", tls_dummy_port);
+    execlp("@Python3_EXECUTABLE@", "@Python3_EXECUTABLE@", "tls_server.py", hostname, port, NULL);
+  }
+  
+#endif
+  sleep(10);
+  return OK;
+}
+
+
+static int set_tls_dummy_options(const char *options)
+{
+  MA_PVIO_CINFO cinfo;
+  MARIADB_PVIO *pvio;
+  MYSQL *mysql= mysql_init(NULL);
+  char buffer[1024];
+  size_t len;
+
+  cinfo.type= PVIO_TYPE_SOCKET;
+  cinfo.host= tls_dummy_host;
+  cinfo.port= tls_dummy_port;
+  cinfo.mysql = mysql;
+
+  if (!(pvio= ma_pvio_init(&cinfo)))
+  {
+    diag("pvio_init failed");
+    return 1;
+  }
+  if (ma_pvio_connect(pvio, &cinfo))
+  {
+    diag("connect failed: %s", mysql_error(mysql));
+    return 1;
+  }
+
+  if (!(len= ma_pvio_read(pvio, (uchar *)buffer, sizeof(buffer))))
+  {
+    diag("Error reading server packet");
+    return 1;
+  }
+
+  if (!ma_pvio_write(pvio, (uchar *)options, strlen(options)))
+  {
+    diag("Error writing configuration");
+    return 1;
+  }
+
+  ma_pvio_close(pvio);
+  return OK;
+}
+
+
+static int test_init(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql= mysql_init(NULL);
+  my_bool verify= 0;
+  int rc;
+  int ret= FAIL;
+  MYSQL_RES *result;
+  MYSQL_ROW row;
+  char query[1024];
+
+  diag("test_init");
+
+  /* Force use of TLS */
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  /* Don't verify peer certificate */
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify);
+
+  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
+                         port, socketname, 0, 0), mysql_error(my));
+
+  rc= mysql_query(mysql, "SELECT @@ssl_cert");
+  check_mysql_rc(rc, mysql);
+
+  if ((result= mysql_store_result(mysql)))
+  {
+    row= mysql_fetch_row(result);
+    auto_generated_cert = (row[0] == NULL);
+    mysql_free_result(result);
+  }
+
+  diag("autogenerated: %d", auto_generated_cert);
+  ignore_self_signed= ignore_self_signed_cert_error(mysql);
+  diag("ignore self signed certificates: %d", ignore_self_signed);
+
+  ret= OK;
+
+  sprintf(query, "CREATE OR REPLACE USER 'tls_user1'@'%s' IDENTIFIED BY 'tls_password'", hostname);
+  rc= mysql_query(mysql, query);
+  check_mysql_rc(rc, mysql);
+
+  sprintf(query, "CREATE OR REPLACE USER 'tls_user2'@'%s'", hostname);
+  rc= mysql_query(mysql, query);
+  check_mysql_rc(rc, mysql);
+
+  mysql_close(mysql);
+  return ret;
+}
+
+static int test_no_cert_check(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql= mysql_init(NULL);
+  my_bool verify= 0;
+
+  /* Force use of TLS */
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  /* Don't verify peer certificate */
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify);
+
+  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
+                         port, socketname, 0, 0), mysql_error(my));
+
+  FAIL_IF(!mysql_get_ssl_cipher(mysql), "No TLS connection");
+
+  mysql_close(mysql);
+  return OK;
+}
+
+static int test_ca_cert_check(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql= mysql_init(NULL);
+  int rc= FAIL;
+
+#ifdef HAVE_SCHANNEL
+  diag("Not supported by schannel");
+  return SKIP;
+#endif
+
+  if (ignore_self_signed)
+  {
+    diag("Test doesn't work on trusted connection");
+    return SKIP;
+  }
+
+  /* Force use of TLS with faked ca, which contains the server
+     certificate */
+  mysql_ssl_set(mysql, NULL, NULL, "./ca_cert.pem", NULL, NULL);
+
+  if (my_test_connect(mysql, hostname, username, password, schema,
+                      port, socketname, 0, 0))
+  {
+    if (auto_generated_cert)
+    {
+      diag("expected hostname mismatch for autogenerated certificate");
+      goto end; 
+    }
+  } else {
+    if (auto_generated_cert)
+    {
+      rc= OK;
+      goto end;
+    }
+    diag("Error: %s", mysql_error(mysql));
+    goto end;
+  }
+
+  FAIL_IF(!mysql_get_ssl_cipher(mysql), "No TLS connection");
+  rc= OK;
+end:
+  mysql_close(mysql);
+  return rc;
+}
+
+static int test_fp(MYSQL *my __attribute__((unused)))
+{
+  unsigned int hash_size[3] = {256, 384, 512};
+  int i;
+  my_bool verify= 0;
+  MYSQL *mysql= mysql_init(NULL);
+
+
+  /* Force use of TLS */
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  /* Don't verify peer certificate */
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify);
+
+  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
+                         port, socketname, 0, 1), mysql_error(my));
+
+  for (i=0; i < 3; i++)
+  {
+    MYSQL *mysql1= mysql_init(NULL);
+    MARIADB_X509_INFO *info;
+
+    diag("testing SHA%d fingerprint", hash_size[i]);
+
+    mariadb_get_infov(mysql, MARIADB_TLS_PEER_CERT_INFO, &info, hash_size[i]);
+
+    mysql_optionsv(mysql1, MARIADB_OPT_SSL_FP, info->fingerprint);
+    FAIL_IF(!my_test_connect(mysql1, hostname, username, password, schema,
+                             port, socketname, 0, 0), mysql_error(my));
+
+    FAIL_IF(!mysql_get_ssl_cipher(mysql), "No TLS connection");
+    mysql_close(mysql1);
+  }
+  mysql_close(mysql);
+  return OK;
+}
+
+static int test_fp_colon(MYSQL *my __attribute__((unused)))
+{
+  unsigned int hash_size[3] = {256, 384, 512};
+  int i;
+  my_bool verify= 0;
+  MYSQL *mysql= mysql_init(NULL);
+  char fp[200];
+
+
+  /* Force use of TLS */
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  /* Don't verify peer certificate */
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify);
+
+  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
+                         port, socketname, 0, 0), mysql_error(my));
+
+  for (i=0; i < 3; i++)
+  {
+    MYSQL *mysql1= mysql_init(NULL);
+    MARIADB_X509_INFO *info;
+    char *p= &fp[0];
+    size_t j;
+
+    diag("testing SHA%d fingerprint with colons", hash_size[i]);
+
+    memset(fp, 0, sizeof(fp));
+
+    mariadb_get_infov(mysql, MARIADB_TLS_PEER_CERT_INFO, &info, hash_size[i]);
+
+    for (j=0; j < strlen(info->fingerprint) / 2; j++)
+    {
+      memcpy(p, info->fingerprint + j * 2, 2);
+      p+= 2;
+      *p++= ':';
+    }
+    p--;
+    *p= 0;
+      
+
+    diag ("fp: %s", fp);
+    mysql_optionsv(mysql1, MARIADB_OPT_SSL_FP, fp);
+    FAIL_IF(!my_test_connect(mysql1, hostname, username, password, schema,
+                             port, socketname, 0, 0), mysql_error(my));
+
+    FAIL_IF(!mysql_get_ssl_cipher(mysql), "No TLS connection");
+    mysql_close(mysql1);
+  }
+  mysql_close(mysql);
+  return OK;
+}
+
+
+static int test_peer_cert_info_fp(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql= mysql_init(NULL);
+  my_bool verify= 0;
+  MARIADB_X509_INFO *info;
+  char old_fp[129] = {0};
+  int i;
+  unsigned int hash_size[3] = {256, 384, 512};
+
+  /* Force use of TLS */
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  /* Don't verify peer certificate */
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, &verify);
+
+  FAIL_IF(!my_test_connect(mysql, hostname, username, password, schema,
+                         port, socketname, 0, 0), mysql_error(my));
+
+  for (i=0; i < 3; i++)
+  {
+    mariadb_get_infov(mysql, MARIADB_TLS_PEER_CERT_INFO, &info, hash_size[i]);
+    FAIL_IF(!info->version, "Wrong certificate version=0");
+
+    FAIL_IF(!strcmp(old_fp, info->fingerprint), "Fingerprint was not updated");
+    if (strlen(info->fingerprint) != hash_size[i] / 4)
+    {
+      diag("Got fingerprint length %zu, expected %u", strlen(info->fingerprint), hash_size[i] / 4);
+      return FAIL;
+    }
+    strcpy(old_fp, info->fingerprint);
+  }
+
+  mysql_close(mysql);
+  return OK;
+}
+
+static int test_fp_garbage(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql= mysql_init(NULL);
+  char fp[129];
+
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  /* 1) use non hex chars */
+  strcpy(fp, "IJKLMNOPQRSTUVWXYZABCDEXXXXXX67IJKLMNOPQRSTUVWXYZABCDEXXXXXX679X");
+  if (mysql_optionsv(mysql, MARIADB_OPT_SSL_FP, fp))
+    return FAIL;
+
+  if (my_test_connect(mysql, hostname, username, password, schema,
+                           port, socketname, 0, 0))
+  {
+    diag("Error expected");
+    diag("%s", mysql_get_ssl_cipher(mysql));
+    return FAIL;
+  }
+  CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_FINGERPRINT, "Fingerprint verification flag not set");
+  mysql_close(mysql);
+  return OK;
+}
+
+static int test_pw_check(MYSQL *my)
+{
+  MYSQL *mysql= mysql_init(NULL);
+  int rc;
+  my_bool local_safe_connection= ignore_self_signed_cert_error(my);
+  char query[1024];
+  int ret= FAIL;
+
+  /* connect with pasword */
+  sprintf(query, "CREATE OR REPLACE USER '%s'@'%s' IDENTIFIED BY '%s'", "tlsuser", this_host, "mypw");
+  rc= mysql_query(my, query);
+  check_mysql_rc(rc, my);
+
+  diag("expected to pass with self signed");
+  if (!my_test_connect(mysql, hostname, "tlsuser", "mypw", NULL, 0, NULL, 0, 0))
+  {
+    diag("Error (password + self signed)");
+    goto end;
+  }
+  diag("ok");
+
+  mysql_close(mysql);
+  mysql= mysql_init(NULL);
+
+  /* connect without pasword */
+  if (!local_safe_connection)
+  {
+    sprintf(query, "CREATE OR REPLACE USER '%s'@'%s'", "tlsuser", this_host);
+    rc= mysql_query(my, query);
+    check_mysql_rc(rc, my);
+
+    if (my_test_connect(mysql, hostname, "tlsuser", NULL, NULL, 0, NULL, 0, 0))
+    {
+      diag("Error expected since no password was specified");
+      goto end;
+    }
+
+    CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_TRUST, "Not trusted flag not set")
+
+    mysql_close(mysql);
+    mysql = mysql_init(NULL);
+    mysql_optionsv(mysql, MARIADB_OPT_RESTRICTED_AUTH, "mysql_native_password, mysql_old_password");
+
+    diag("expected to fail with old_password plugin");
+    /* Test with an authentication plugin, which doesn't support hashing */
+    sprintf(query, "CREATE OR REPLACE USER '%s'@'%s' IDENTIFIED VIA mysql_old_password USING '7c786c222596437b'", "tlsuser", this_host);
+    rc= mysql_query(my, query);
+    check_mysql_rc(rc, my);
+    rc= mysql_query(my, "SET GLOBAL secure_auth=0");
+    check_mysql_rc(rc, my);
+
+    if (my_test_connect(mysql, hostname, "tlsuser", "foo", NULL, 0, NULL, 0, 0))
+    {
+      diag("Error expected since old_password was specified");
+      goto end;
+    }
+    diag("ok");
+  }
+
+  ret= OK;
+end:
+  mysql_close(mysql);
+  return ret;
+}
+
+static int test_cert_expired(MYSQL *my __attribute__((unused)))
+{
+  int ret= OK;
+  MYSQL *mysql;
+
+  /* Set validity in future */
+  if (set_tls_dummy_options("CMD:create_new=True validityStartInSeconds=10000 validityEndInSeconds=2000"))
+  {
+    diag("Error when setting TLS options");
+    return FAIL;
+  }
+
+  mysql= mysql_init(NULL);
+
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  if (my_test_connect(mysql, tls_dummy_host,  "tlsuser", "foo", NULL,  tls_dummy_port, NULL, 0, 0))
+  {
+    diag("Error expected since cert is not valid yet");
+    return FAIL;
+  }
+  mysql_close(mysql);
+
+  /* Set cert expired */
+  if (set_tls_dummy_options("CMD:create_new=True validityStartInSeconds=-20000 validityEndInSeconds=-10000"))
+  {
+    diag("Error when setting TLS options");
+    return FAIL;
+  }
+
+  mysql= mysql_init(NULL);
+
+  mysql_ssl_set(mysql, NULL, NULL, NULL, NULL, NULL);
+
+  if (my_test_connect(mysql, tls_dummy_host,  "tlsuser", "foo", NULL,  tls_dummy_port, NULL, 0, 0))
+  {
+    diag("Error expected since cert is not valid yet");
+    return FAIL;
+  }
+  CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_PERIOD, "NotBefore/NotAfter flag not set")
+  mysql_close(mysql);
+
+
+  return ret;
+}
+
+static int test_wrong_ca(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql= mysql_init(NULL);
+
+  mysql_ssl_set(mysql, NULL, NULL, "selfsigned.pem", NULL, NULL);
+  if (my_test_connect(mysql, hostname, "tlsuser", "foo", NULL, 0, NULL, 0, 0))
+  {
+    diag("self signed error expected");
+    return FAIL;
+  }
+  CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_TRUST, "Not trusted flag not set")
+  mysql_close(mysql);
+  return OK;
+}
+
+static int test_crl(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql;
+
+  /* Set validity in future */
+  if (set_tls_dummy_options("CMD:KEY_FILE='./certs/server-key.pem' CERT_FILE='./certs/server-cert.pem'"))
+  {
+    diag("Error when setting TLS options");
+    return FAIL;
+  }
+
+  mysql= mysql_init(NULL);
+
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_CRL, "./certs/server-cert.crl");
+  mysql_ssl_set(mysql, NULL, NULL, "./certs/cacert.pem", NULL, NULL);
+
+  if (my_test_connect(mysql, tls_dummy_host, "tlsuser", "foo", NULL, tls_dummy_port, NULL, 0, 0))
+  {
+    diag("Error expected since cert revoked");
+    return FAIL;
+  }
+  CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_REVOKED, "Revocation flag not set")
+  mysql_close(mysql);
+  return OK;
+}
+
+static int test_crl_with_fp(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql;
+  /* hardcoded: openssl x509 -noout -fingerprint -sha256 -inform pem -in certs/server-cert.pem */
+  const char *fp= "4B:EE:BB:12:6D:30:1A:B2:2A:4A:F8:6D:82:7F:63:44:1F:8F:F4:6B:D3:F2:CA:68:0B:D5:E3:5D:1C:47:A7:16";
+
+  /* Set validity in future */
+  if (set_tls_dummy_options("CMD:KEY_FILE='./certs/server-key.pem' CERT_FILE='./certs/server-cert.pem'"))
+  {
+    diag("Error when setting TLS options");
+    return FAIL;
+  }
+
+  mysql= mysql_init(NULL);
+  mysql_optionsv(mysql, MARIADB_OPT_SSL_FP, fp);
+
+  mysql_optionsv(mysql, MYSQL_OPT_SSL_CRL, "./certs/server-cert.crl");
+  mysql_ssl_set(mysql, NULL, NULL, "./certs/cacert.pem", NULL, NULL);
+
+  if (my_test_connect(mysql, tls_dummy_host, "tlsuser", "foo", NULL, tls_dummy_port, NULL, 0, 0))
+  {
+    diag("Error expected since cert revoked");
+    return FAIL;
+  }
+  CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_REVOKED, "Revocation flag not set")
+  mysql_close(mysql);
+  return OK;
+}
+
+
+static int test_wrong_hostname(MYSQL *my __attribute__((unused)))
+{
+  MYSQL *mysql;
+
+  /* Set validity in future */
+  if (set_tls_dummy_options("CMD:create_new=True"))
+  {
+    diag("Error when setting TLS options");
+    return FAIL;
+  }
+
+  mysql= mysql_init(NULL);
+
+  mysql_ssl_set(mysql, NULL, NULL, "./selfsigned.pem", NULL, NULL);
+
+  if (my_test_connect(mysql, tls_dummy_host, "tlsuser", "foo", NULL, tls_dummy_port, NULL, 0, 0))
+  {
+    diag("Error expected since hostname doesn't match");
+    return FAIL;
+  }
+  CHECK_TLS_FLAGS(mysql, MARIADB_TLS_VERIFY_HOST, "Host name validation flag not set")
+  mysql_close(mysql);
+  return OK;
+}
+
+static int stop_tls_server(MYSQL *my __attribute__((unused)))
+{
+  if (set_tls_dummy_options("QUIT"))
+  {
+    diag("Error when shutting down tls dummy server");
+    return FAIL;
+  }
+  return OK;
+}
+
+struct my_tests_st my_tests[] = {
+  /* Don't add test above, test_init needs to be run first */
+  {"test_start_tls_server", test_start_tls_server, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_init", test_init, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  /* Here you can add more tests */
+  {"test_cert_expired", test_cert_expired, TEST_CONNECTION_NEW, 0, NULL, NULL},
+  {"test_pw_check", test_pw_check, TEST_CONNECTION_NEW, 0, NULL, NULL},
+  {"test_ca_cert_check", test_ca_cert_check, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_fp_garbage", test_fp_garbage, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_peer_cert_info_fp", test_peer_cert_info_fp, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_no_cert_check", test_no_cert_check, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_fp", test_fp, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_fp_colon", test_fp_colon, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_wrong_ca", test_wrong_ca, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_wrong_hostname", test_wrong_hostname, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_crl", test_crl, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"test_crl_with_fp", test_crl_with_fp, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {"stop_tls_server", stop_tls_server, TEST_CONNECTION_NONE, 0, NULL, NULL},
+  {NULL, NULL, 0, 0, NULL, 0}
+};
+
+
+int main(int argc, char **argv)
+{
+  char *dummy_port;
+
+  if (argc > 1)
+    get_options(argc, argv);
+
+  get_envvars();
+
+  if (!(tls_dummy_host= getenv("MARIADB_TLS_DUMMY_HOST")))
+    tls_dummy_host= (char *)"127.0.0.1";
+  if ((dummy_port= getenv("MARIADB_TLS_DUMMY_PORT")))
+    tls_dummy_port= atoi(dummy_port);
+  if (!tls_dummy_port)
+    tls_dummy_port= 50000;
+
+
+  run_tests(my_tests);
+
+  return(exit_status());
+}
--- a/unittest/libmariadb/tls_server.py
+++ b/unittest/libmariadb/tls_server.py
@@ -0,0 +1,157 @@
+import socket
+import ssl
+import argparse
+from ast import literal_eval
+from OpenSSL import crypto, SSL
+import os
+
+class TlsServer():
+
+    def __init__(self, *args, **kwargs):
+        self.host= kwargs.pop("host", "127.0.0.1")
+        self.port= kwargs.pop("port", 50000)
+        self.server= None
+        self.end= False
+
+        try:
+            self.server= socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            self.server.bind((self.host, self.port))
+            print("# tls dummy_server started: ", self.host, self.port)
+            self.server.listen()
+        except Exception as e:
+            print("Couldn't start tls_server")
+            print(e)
+
+    def check_server(self):
+        if not self.server:
+            raise Exception("Server not started")
+             
+
+    def send_server_hello(self, conn):
+        self.check_server()
+        try:
+            conn.sendall(server_hello)
+        except Exception as e:
+            print("Couldn't send server_hello")
+            print(e)
+            return 0
+        return 1
+
+    def generate_cert(self,
+                      create_new=False,
+                      create_crl=False,
+                      emailAddress="emailAddress",
+                      commonName="commonName",
+                      countryName="NT",
+                      localityName="localityName",
+                      stateOrProvinceName="stateOrProvinceName",
+                      organizationName="organizationName",
+                      organizationUnitName="organizationUnitName",
+                      serialNumber=123,
+                      validityStartInSeconds=0,
+                      validityEndInSeconds=10*365*24*60*60,
+                      KEY_FILE = "privkey.pem",
+                      CRL_FILE = "selfsigned.crl",
+                      CERT_FILE="selfsigned.pem"):
+
+
+        self.key_file= KEY_FILE
+        self.cert_file= CERT_FILE
+        self.crl_file = CRL_FILE
+
+        if create_new:
+            try:
+                k = crypto.PKey()
+                k.generate_key(crypto.TYPE_RSA, 4096)
+                # create a self-signed cert
+                cert = crypto.X509()
+                cert.get_subject().C = countryName
+                cert.get_subject().ST = stateOrProvinceName
+                cert.get_subject().L = localityName
+                cert.get_subject().O = organizationName
+                cert.get_subject().OU = organizationUnitName
+                cert.get_subject().CN = commonName
+                cert.get_subject().emailAddress = emailAddress
+                cert.set_serial_number(serialNumber)
+                cert.gmtime_adj_notBefore(validityStartInSeconds)
+                cert.gmtime_adj_notAfter(validityEndInSeconds)
+                cert.set_issuer(cert.get_subject())
+                cert.set_pubkey(k)
+                cert.sign(k, 'sha512')
+                with open(CERT_FILE, "wt") as f:
+                    f.write(crypto.dump_certificate(crypto.FILETYPE_PEM, cert).decode("utf-8"))
+                with open(KEY_FILE, "wt") as f:
+                    f.write(crypto.dump_privatekey(crypto.FILETYPE_PEM, k).decode("utf-8"))
+                return 1
+            except Exception as e:
+                return 0
+        return 1
+
+
+    def set_tls_context(self, reply):
+        kwargs= {}
+        if len(reply) > 0:
+            cmds= reply.decode()
+            kwargs= dict((k, literal_eval(v)) for k, v in (pair.split('=') for pair in cmds.split()))
+        print("# command: ", kwargs)
+        if self.generate_cert(**kwargs):
+            print("# loading certs", self.cert_file, self.key_file)
+            self.context= ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+            self.context.load_cert_chain(self.cert_file, self.key_file)
+            return 1
+        return 0
+            
+
+    def accept(self):
+        self.check_server()
+        conn, addr= self.server.accept()
+        return (conn, addr)
+
+    def run(self):
+        while not self.end:
+            connection, address= self.accept()
+            print("# new connection")
+            self.send_server_hello(connection)
+            reply= connection.recv(4096)
+            if reply[:4] == b'CMD:':
+                if self.set_tls_context(reply[4:]):
+                    connection.sendall(b'OK')
+            elif reply[:4] == b'QUIT':
+                print("# exiting tls_dummy_server")
+                try:
+                    connection.close()
+                except:
+                    pass
+                return
+            else:
+                try:
+                    tls_sock= self.context.wrap_socket(connection, server_side=True)
+                except Exception as e:
+                    print("error occured")
+                    print(e)
+                    connection.close()
+            connection.close()
+
+# Hardcoded server hello packet (captured from MariaDB Server 11.4.2)
+server_hello = b'R\x00\x00\x00\n11.4.2-MariaDB\x00\xff\x01\x00\x00Nv\
+*hQ;qK\x00\xfe\xff\x08\x02\x00\xff\x81\x15\x00\x00\x00\
+\x00\x00\x00\x1d\x00\x00\x00`$-VIJyC!x[?\x00mysql_native_password\x00'
+
+
+if __name__ == '__main__':
+
+    parser= argparse.ArgumentParser(
+                       prog='tls_server',
+                       description='Simple TLS dummy test server')
+    parser.add_argument('--host', help='Hostaddress of TLS test server (Default 127.0.0.1)')
+    parser.add_argument('--port', help='Port of TLS test server. (Default 50000)')
+
+    args= parser.parse_args()
+
+    if not (port := args.port):
+        port= 50000;
+    if not (host := args.host):
+        host= "127.0.0.1"
+    server= TlsServer(host=host, port=int(port))
+    print("# Starting tls_dummy_server")
+    server.run()