Merge branch 'sst-ssl-fixes-10.2' of https://github.com/codership/mariadb-server into codership-sst-ssl-fixes-10.2codership-sst-ssl-fixes-10.2

8 files changed, 259 insertions, 75 deletions

diff --git a/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key.result b/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key.result
index 990e0a29506..8048cafecd8 100644
--- a/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key.result
+++ b/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key.result
@@ -1,3 +1,4 @@
 SELECT 1;
 1
 1
+include/assert_grep.inc [Using openssl based encryption with socat]
diff --git a/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key_server.result b/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key_server.result
new file mode 100644
index 00000000000..8048cafecd8
--- /dev/null
+++ b/mysql-test/suite/galera/r/galera_sst_mariabackup_encrypt_with_key_server.result
@@ -0,0 +1,4 @@
+SELECT 1;
+1
+1
+include/assert_grep.inc [Using openssl based encryption with socat]
diff --git a/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key.test b/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key.test
index 4449ea43c43..523d44102dd 100644
--- a/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key.test
+++ b/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key.test
@@ -1,6 +1,8 @@
 #
-# This test checks that key and cert encryption options can be passed to mariabackup via the my.cnf file
-# Initial SST happens via mariabackup, so there is not much to do in the body of the test
+# This test checks that key and cert encryption options can be passed to
+# mariabackup via the my.cnf file
+# Initial SST happens via mariabackup, so there is not much to do in the body
+# of the test
 #
 
 --source include/big_test.inc
@@ -12,3 +14,11 @@ SELECT 1;
 
 --let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
 --source include/wait_condition.inc
+
+# Confirm that transfer was SSL-encrypted
+--let $assert_text = Using openssl based encryption with socat
+--let $assert_select = Using openssl based encryption with socat: with key and crt
+--let $assert_count = 1
+--let $assert_file = $MYSQLTEST_VARDIR/log/mysqld.1.err
+--let $assert_only_after = CURRENT_TEST
+--source include/assert_grep.inc
diff --git a/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key_server.cnf b/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key_server.cnf
new file mode 100644
index 00000000000..12fca48e065
--- /dev/null
+++ b/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key_server.cnf
@@ -0,0 +1,13 @@
+!include ../galera_2nodes.cnf
+
+[mysqld]
+wsrep_sst_method=mariabackup
+wsrep_sst_auth="root:"
+wsrep_debug=ON
+
+ssl-cert=@ENV.MYSQL_TEST_DIR/std_data/client-cert.pem
+ssl-key=@ENV.MYSQL_TEST_DIR/std_data/client-key.pem
+ssl-ca=@ENV.MYSQL_TEST_DIR/std_data/cacert.pem
+
+[sst]
+ssl-mode=VERIFY_CA
\ No newline at end of file
diff --git a/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key_server.test b/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key_server.test
new file mode 100644
index 00000000000..19ebd0cf51e
--- /dev/null
+++ b/mysql-test/suite/galera/t/galera_sst_mariabackup_encrypt_with_key_server.test
@@ -0,0 +1,25 @@
+#
+# This test checks that if SST SSL is not explicitly donfigured mariabackup SST
+# uses server SSL configuration if present.
+# Initial SST happens via mariabackup, so there is not much to do in the body
+# of the test
+#
+
+--source include/big_test.inc
+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+--source include/have_mariabackup.inc
+--source include/have_ssl_communication.inc
+
+SELECT 1;
+
+--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+
+# Confirm that transfer was SSL-encrypted
+--let $assert_text = Using openssl based encryption with socat
+--let $assert_select = Using openssl based encryption with socat: with key and c
+--let $assert_count = 1
+--let $assert_file = $MYSQLTEST_VARDIR/log/mysqld.1.err
+--let $assert_only_after = CURRENT_TEST
+--source include/assert_grep.inc
diff --git a/scripts/wsrep_sst_common.sh b/scripts/wsrep_sst_common.sh
index f5adf0b0fd8..a6f439b5348 100644
--- a/scripts/wsrep_sst_common.sh
+++ b/scripts/wsrep_sst_common.sh
@@ -25,6 +25,7 @@ WSREP_SST_OPT_DATA=""
 WSREP_SST_OPT_AUTH=${WSREP_SST_OPT_AUTH:-}
 WSREP_SST_OPT_USER=${WSREP_SST_OPT_USER:-}
 WSREP_SST_OPT_PSWD=${WSREP_SST_OPT_PSWD:-}
+WSREP_SST_OPT_REMOTE_AUTH=${WSREP_SST_OPT_REMOTE_AUTH:-}
 WSREP_SST_OPT_DEFAULT=""
 WSREP_SST_OPT_EXTRA_DEFAULT=""
 WSREP_SST_OPT_SUFFIX_DEFAULT=""
@@ -34,6 +35,7 @@ INNODB_DATA_HOME_DIR_ARG=""
 INNODB_LOG_GROUP_HOME_ARG=""
 INNODB_UNDO_DIR_ARG=""
 LOG_BIN_ARG=""
+readonly WSREP_SST_OPT_REMOTE_AUTH
 
 while [ $# -gt 0 ]; do
 case "$1" in
@@ -121,7 +123,8 @@ case "$1" in
         WSREP_SST_OPT_BYPASS=1
         ;;
     '--datadir')
-        readonly WSREP_SST_OPT_DATA="$2"
+        # strip trailing '/'
+        readonly WSREP_SST_OPT_DATA="${2%/}"
         shift
         ;;
     '--innodb-data-home-dir')
@@ -320,12 +323,22 @@ readonly WSREP_SST_OPT_AUTH
 # Splitting AUTH into potential user:password pair
 if ! wsrep_auth_not_set
 then
-    WSREP_SST_OPT_USER="${WSREP_SST_OPT_AUTH%%:*}"
+    WSREP_SST_OPT_USER="${WSREP_SST_OPT_AUTH%:*}"
     WSREP_SST_OPT_PSWD="${WSREP_SST_OPT_AUTH##*:}"
 fi
 readonly WSREP_SST_OPT_USER
 readonly WSREP_SST_OPT_PSWD
 
+if [ -n "$WSREP_SST_OPT_REMOTE_AUTH" ]
+then
+    # Split auth string at the last ':'
+    readonly WSREP_SST_OPT_REMOTE_USER="${WSREP_SST_OPT_REMOTE_AUTH%:*}"
+    readonly WSREP_SST_OPT_REMOTE_PSWD="${WSREP_SST_OPT_REMOTE_AUTH##*:}"
+else
+    readonly WSREP_SST_OPT_REMOTE_USER=
+    readonly WSREP_SST_OPT_REMOTE_PSWD=
+fi
+
 if [ -n "${WSREP_SST_OPT_DATA:-}" ]
 then
     SST_PROGRESS_FILE="$WSREP_SST_OPT_DATA/sst_in_progress"
@@ -385,6 +398,19 @@ wsrep_check_programs()
     return $ret
 }
 
+# Generate a string equivalent to 16 random bytes
+wsrep_gen_secret()
+{
+    if [ -x /usr/bin/openssl ]
+    then
+        echo `/usr/bin/openssl rand -hex 16`
+    else
+        printf "%04x%04x%04x%04x%04x%04x%04x%04x" \
+                $RANDOM $RANDOM $RANDOM $RANDOM   \
+                $RANDOM $RANDOM $RANDOM $RANDOM
+    fi
+}
+
 #
 # user can specify mariabackup specific settings that will be used during sst
 # process like encryption, etc.....
@@ -396,14 +422,22 @@ wsrep_check_programs()
 parse_cnf()
 {
     local group=$1
-    local var=$2
+    local var=${2//_/-} # normalize variable name by replacing all '_' with '-'
     local reval=""
 
-    # normalize the variable names specified in cnf file (user can use _ or - for example log-bin or log_bin)
+    # first normalize output variable names specified in cnf file:
+    # user can use _ or - (for example log-bin or log_bin) and/or prefix
+    # variable with --loose-
     # then search for needed variable
     # finally get the variable value (if variables has been specified multiple time use the last value only)
 
-    reval=$($MY_PRINT_DEFAULTS "${group}" | awk -v var="${var}" 'BEGIN { OFS=FS="=" } { gsub(/_/,"-",$1); if ( $1=="--"var) lastval=substr($0,length($1)+2) } END { print lastval}')
+    reval=$($MY_PRINT_DEFAULTS "${group}" | \
+            awk -v var="${var}" 'BEGIN { OFS=FS="=" } \
+                                       { sub(/^--loose/,"-",$0); \
+                                         gsub(/_/,"-",$1); \
+                                         if ( $1=="--"var) \
+                                             lastval=substr($0,length($1)+2) } \
+                                 END { print lastval}')
 
     # use default if we haven't found a value
     if [ -z "$reval" ]; then
diff --git a/scripts/wsrep_sst_mariabackup.sh b/scripts/wsrep_sst_mariabackup.sh
index 231cf6e3702..f54afb878b5 100644
--- a/scripts/wsrep_sst_mariabackup.sh
+++ b/scripts/wsrep_sst_mariabackup.sh
@@ -37,6 +37,7 @@ REMOTEIP=""
 tcert=""
 tpem=""
 tkey=""
+tmode="DISABLED"
 sockopt=""
 progress=""
 ttime=0
@@ -72,6 +73,8 @@ xtmpdir=""
 scomp=""
 sdecomp=""
 
+readonly SECRET_TAG="secret"
+
 # Required for backup locks
 # For backup locks it is 1 sent by joiner
 # 5.6.21 PXC and later can't donate to an older joiner
@@ -264,24 +267,30 @@ get_transfer()
                 exit 22
             fi
             stagemsg+="-OpenSSL-Encrypted-3"
-            if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
-                if [[ -z $tcert ]];then
+            if [[ -z $tcert ]];then
+                # no verification
+                if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
                     wsrep_log_info "Decrypting with cert=${tpem}, key=${tkey}, verify=0"
                     tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tpem},key=${tkey},verify=0${sockopt} stdio"
                 else
-                    wsrep_log_info "Decrypting with cert=${tpem}, key=${tkey}, cafile=${tcert}"
-                    tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tpem},key=${tkey},cafile=${tcert}${sockopt} stdio"
-                fi
-            else
-                if [[ -z $tcert ]];then
                     wsrep_log_info "Encrypting with cert=${tpem}, key=${tkey}, verify=0"
                     tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${tpem},key=${tkey},verify=0${sockopt}"
+                fi
+            else
+                # CA verification
+                if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
+                    wsrep_log_info "Decrypting with cert=${tpem}, key=${tkey}, cafile=${tcert}"
+                    tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tpem},key=${tkey},cafile=${tcert}${sockopt} stdio"
                 else
+                    if [ -n "$WSREP_SST_OPT_REMOTE_USER" ]; then
+                        CN_option=",commonname=$WSREP_SST_OPT_REMOTE_USER"
+                    else
+                        CN_option=""
+                    fi
                     wsrep_log_info "Encrypting with cert=${tpem}, key=${tkey}, cafile=${tcert}"
-                    tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${tpem},key=${tkey},cafile=${tcert}${sockopt}"
+                    tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${tpem},key=${tkey},cafile=${tcert}${CN_option}${sockopt}"
                 fi
             fi
-
         else 
             if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
                 tcmd="socat -u TCP-LISTEN:${TSST_PORT},reuseaddr${sockopt} stdio"
@@ -290,7 +299,6 @@ get_transfer()
             fi
         fi
     fi
-
 }
 
 parse_cnf()
@@ -298,10 +306,17 @@ parse_cnf()
     local group=$1
     local var=$2
     # print the default settings for given group using my_print_default.
+    # remove possible 'loose' variable name prefix
     # normalize the variable names specified in cnf file (user can use _ or - for example log-bin or log_bin)
     # then grep for needed variable
     # finally get the variable value (if variables has been specified multiple time use the last value only)
-    reval=$($MY_PRINT_DEFAULTS $group | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
+    reval=$($MY_PRINT_DEFAULTS $group | \
+            awk -F= '{ sub(/^--loose/,"-",$0); \
+                       if ($1 ~ /_/) \
+                           { gsub(/_/,"-",$1); print $1"="$2 } \
+                       else \
+                           { print $0 }}' | \
+            grep -- "--$var=" | cut -d= -f2- | tail -1)
     if [[ -z $reval ]];then 
         [[ -n $3 ]] && reval=$3
     fi
@@ -351,6 +366,24 @@ adjust_progress()
     fi
 }
 
+check_server_ssl_config()
+{
+    local section=$1
+    tcert=$(parse_cnf $section ssl-ca "")
+    tpem=$(parse_cnf $section ssl-cert "")
+    tkey=$(parse_cnf $section ssl-key "")
+    if [ 0 -eq $encrypt -a -n "$tpem" -a -n "$tkey" ]
+    then
+         encrypt=3 # enable cert/key SSL encyption
+
+         # avoid CA verification if not set explicitly:
+         # nodes may happen to have different CA if self-generated
+         # zeroing up tcert does the trick
+         local mode=$(parse_cnf SST ssl-mode "")
+         [[ ${tmode} = *VERIFY* ]] || tcert=""
+    fi
+}
+
 read_cnf()
 {
     sfmt=$(parse_cnf sst streamfmt "xbstream")
@@ -359,6 +392,26 @@ read_cnf()
     tpem=$(parse_cnf sst tcert "")
     tkey=$(parse_cnf sst tkey "")
     encrypt=$(parse_cnf sst encrypt 0)
+    tmode=$(parse_cnf sst ssl-mode "DISABLED" | tr [:lower:] [:upper:])
+
+    if [ -z "$tpem" -a -z "$tkey" -a -z "$tcert" ]
+    then # no old-style SSL config in [sst]
+        if [ "$tmode" != "DISABLED" ]
+        then # backward-incompatible behavior
+            check_server_ssl_config "sst"
+            if [ -z "$tpem" -a -z "$tkey" -a -z "$tcert" ]
+            then # no new-stype SSL config in [sst], try server-wide SSL config
+                check_server_ssl_config "mysqld.$WSREP_SST_OPT_SUFFIX_VALUE"
+                if [ -z "$tpem" -a -z "$tkey" -a -z "$tcert" ]
+                then
+                    check_server_ssl_config "mysqld"
+                fi
+            fi
+        fi
+    fi
+    wsrep_log_info "SSL configuration: CA='"$tcert"', CERT='"$tpem"'," \
+                   "KEY='"$tkey"', MODE='"$tmode"', encrypt="$encrypt
+
     sockopt=$(parse_cnf sst sockopt "")
     progress=$(parse_cnf sst progress "")
     rebuild=$(parse_cnf sst rebuild 0)
@@ -404,7 +457,7 @@ read_cnf()
 
     if [[ $encrypt -eq 1 ]]; then
         wsrep_log_error "Xtrabackup-based encryption is currently not" \
-            "supported with MariaBackup"
+                        "supported with MariaBackup"
         exit 2
     fi
 }
@@ -631,8 +684,8 @@ recv_joiner()
     popd 1>/dev/null 
 
     if [[ ${RC[0]} -eq 124 ]];then 
-        wsrep_log_error "Possible timeout in receiving first data from "
-	                "donor in gtid stage: exit codes: ${RC[@]}"
+        wsrep_log_error "Possible timeout in receiving first data from " \
+                        "donor in gtid stage: exit codes: ${RC[@]}"
         exit 32
     fi
 
@@ -644,12 +697,27 @@ recv_joiner()
         fi
     done
 
-    if [[ $checkf -eq 1 && ! -r "${MAGIC_FILE}" ]];then
-        # this message should cause joiner to abort
-        wsrep_log_error "xtrabackup process ended without creating '${MAGIC_FILE}'"
-        wsrep_log_info "Contents of datadir" 
-        wsrep_log_info "$(ls -l ${dir}/*)"
-        exit 32
+    if [[ $checkf -eq 1 ]]; then
+        if [[ ! -r "${MAGIC_FILE}" ]];then
+            # this message should cause joiner to abort
+            wsrep_log_error "receiving process ended without creating " \
+                            "'${MAGIC_FILE}'"
+            wsrep_log_info "Contents of datadir" 
+            wsrep_log_info "$(ls -l ${dir}/*)"
+            exit 32
+        fi
+
+        # check donor supplied secret
+        SECRET=$(grep "$SECRET_TAG " ${MAGIC_FILE} 2>/dev/null | cut -d ' ' -f 2)
+        if [[ $SECRET != $MY_SECRET ]]; then
+            wsrep_log_error "Donor does not know my secret!"
+            wsrep_log_info "Donor:'$SECRET', my:'$MY_SECRET'"
+            exit 32
+        fi
+
+        # remove secret from magic file
+        grep -v "$SECRET_TAG " ${MAGIC_FILE} > ${MAGIC_FILE}.new
+        mv ${MAGIC_FILE}.new ${MAGIC_FILE}
     fi
 }
 
@@ -665,10 +733,9 @@ send_donor()
     set -e
     popd 1>/dev/null 
 
-
     for ecode in "${RC[@]}";do 
         if [[ $ecode -ne 0 ]];then 
-            wsrep_log_error "Error while getting data from donor node: " \
+            wsrep_log_error "Error while sending data to joiner node: " \
                             "exit codes: ${RC[@]}"
             exit 32
         fi
@@ -891,6 +958,11 @@ then
         # (separated by a space).
         echo "${WSREP_SST_OPT_GTID} ${WSREP_SST_OPT_GTID_DOMAIN_ID}" > "${MAGIC_FILE}"
 
+        if [[ -n ${WSREP_SST_OPT_REMOTE_PSWD} ]]; then
+            # Let joiner know that we know its secret
+            echo "$SECRET_TAG ${WSREP_SST_OPT_REMOTE_PSWD}" >> ${MAGIC_FILE}
+        fi
+
         ttcmd="$tcmd"
 
         if [[ $encrypt -eq 1 ]];then
@@ -1003,7 +1075,6 @@ then
 
     stagemsg="Joiner-Recv"
 
-
     sencrypted=1
     nthreads=1
 
@@ -1025,7 +1096,26 @@ then
         fi
     fi
 
-    wait_for_listen ${SST_PORT} ${ADDR} ${MODULE} &
+    if [[ "$tmode" = *"VERIFY"* ]]
+    then # backward-incompatible behavior
+        if [ -n "$tpem" ]
+        then
+            # find out my Common Name
+            wsrep_check_programs openssl
+            CN=$(openssl x509 -noout -subject -in $tpem | \
+                 tr "," "\n" | grep "CN =" | cut -d= -f2 | sed s/^\ // | \
+                 sed s/\ %//)
+        else
+            CN=""
+        fi
+        MY_SECRET=$(wsrep_gen_secret)
+        # Add authentication data to address
+        ADDR="$CN:$MY_SECRET@$ADDR"
+    else
+        MY_SECRET="" # for check down in recv_joiner()
+    fi # tmode == *VERIFY*
+
+    wait_for_listen ${SST_PORT} "${ADDR}" ${MODULE} &
 
     trap sig_joiner_cleanup HUP PIPE INT TERM
     trap cleanup_joiner EXIT
diff --git a/sql/wsrep_sst.cc b/sql/wsrep_sst.cc
index f4092b9b8a7..38560c7c663 100644
--- a/sql/wsrep_sst.cc
+++ b/sql/wsrep_sst.cc
@@ -637,49 +637,30 @@ err:
   return NULL;
 }
 
-#define WSREP_SST_AUTH_ENV "WSREP_SST_OPT_AUTH"
+#define WSREP_SST_AUTH_ENV        "WSREP_SST_OPT_AUTH"
+#define WSREP_SST_REMOTE_AUTH_ENV "WSREP_SST_OPT_REMOTE_AUTH"
+#define DATA_HOME_DIR_ENV         "INNODB_DATA_HOME_DIR"
 
-static int sst_append_auth_env(wsp::env& env, const char* sst_auth)
+static int sst_append_env_var(wsp::env&   env,
+                              const char* const var,
+                              const char* const val)
 {
-  int const sst_auth_size= strlen(WSREP_SST_AUTH_ENV) + 1 /* = */
-    + (sst_auth ? strlen(sst_auth) : 0) + 1 /* \0 */;
+  int const env_str_size= strlen(var) + 1 /* = */
+                          + (val ? strlen(val) : 0) + 1 /* \0 */;
 
-  wsp::string sst_auth_str(sst_auth_size); // for automatic cleanup on return
-  if (!sst_auth_str()) return -ENOMEM;
+  wsp::string env_str(env_str_size); // for automatic cleanup on return
+  if (!env_str()) return -ENOMEM;
 
-  int ret= snprintf(sst_auth_str(), sst_auth_size, "%s=%s",
-                    WSREP_SST_AUTH_ENV, sst_auth ? sst_auth : "");
+  int ret= snprintf(env_str(), env_str_size, "%s=%s", var, val ? val : "");
 
-  if (ret < 0 || ret >= sst_auth_size)
+  if (ret < 0 || ret >= env_str_size)
   {
-    WSREP_ERROR("sst_append_auth_env(): snprintf() failed: %d", ret);
+    WSREP_ERROR("sst_append_env_var(): snprintf(%s=%s) failed: %d",
+                var, val, ret);
     return (ret < 0 ? ret : -EMSGSIZE);
   }
 
-  env.append(sst_auth_str());
-  return -env.error();
-}
-
-#define DATA_HOME_DIR_ENV "INNODB_DATA_HOME_DIR"
-
-static int sst_append_data_dir(wsp::env& env, const char* data_dir)
-{
-  int const data_dir_size= strlen(DATA_HOME_DIR_ENV) + 1 /* = */
-    + (data_dir ? strlen(data_dir) : 0) + 1 /* \0 */;
-
-  wsp::string data_dir_str(data_dir_size); // for automatic cleanup on return
-  if (!data_dir_str()) return -ENOMEM;
-
-  int ret= snprintf(data_dir_str(), data_dir_size, "%s=%s",
-                    DATA_HOME_DIR_ENV, data_dir ? data_dir : "");
-
-  if (ret < 0 || ret >= data_dir_size)
-  {
-    WSREP_ERROR("sst_append_data_dir(): snprintf() failed: %d", ret);
-    return (ret < 0 ? ret : -EMSGSIZE);
-  }
-
-  env.append(data_dir_str());
+  env.append(env_str());
   return -env.error();
 }
 
@@ -1090,7 +1071,7 @@ static ssize_t sst_prepare_other (const char*  method,
     return -env.error();
   }
 
-  if ((ret= sst_append_auth_env(env, sst_auth)))
+  if ((ret= sst_append_env_var(env, WSREP_SST_AUTH_ENV, sst_auth)))
   {
     WSREP_ERROR("sst_prepare_other(): appending auth failed: %d", ret);
     return ret;
@@ -1098,7 +1079,7 @@ static ssize_t sst_prepare_other (const char*  method,
 
   if (data_home_dir)
   {
-    if ((ret= sst_append_data_dir(env, data_home_dir)))
+    if ((ret= sst_append_env_var(env, DATA_HOME_DIR_ENV, data_home_dir)))
     {
       WSREP_ERROR("sst_prepare_other(): appending data "
                   "directory failed: %d", ret);
@@ -1275,12 +1256,12 @@ ssize_t wsrep_sst_prepare (void** msg)
 
   *msg = malloc (msg_len);
   if (NULL != *msg) {
-    char* const method_ptr(reinterpret_cast<char*>(*msg));
+    char* const method_ptr(static_cast<char*>(*msg));
     strcpy (method_ptr, wsrep_sst_method);
     char* const addr_ptr(method_ptr + method_len + 1);
     strcpy (addr_ptr, addr_out);
 
-    WSREP_INFO ("Prepared SST request: %s|%s", method_ptr, addr_ptr);
+    WSREP_DEBUG("Prepared SST request: %s|%s", method_ptr, addr_ptr);
   }
   else {
     WSREP_ERROR("Failed to allocate SST request of size %zu. Can't continue.",
@@ -1733,6 +1714,7 @@ static int sst_donate_other (const char*   method,
                  "wsrep_sst_%s "
                  WSREP_SST_OPT_ROLE " 'donor' "
                  WSREP_SST_OPT_ADDR " '%s' "
+                 WSREP_SST_OPT_LPORT " '%u' "
                  WSREP_SST_OPT_SOCKET " '%s' "
                  WSREP_SST_OPT_DATA " '%s' "
                  "%s"
@@ -1740,7 +1722,8 @@ static int sst_donate_other (const char*   method,
                  WSREP_SST_OPT_GTID_DOMAIN_ID " '%d'"
                  "%s"
                  "%s",
-                 method, addr, mysqld_unix_port, mysql_real_data_home,
+                 method, addr, mysqld_port, mysqld_unix_port,
+                 mysql_real_data_home,
                  wsrep_defaults_file,
                  uuid, (long long) seqno, wsrep_gtid_domain_id,
                  binlog_opt_val,
@@ -1820,7 +1803,21 @@ wsrep_cb_status_t wsrep_sst_donate_cb (void* app_ctx, void* recv_ctx,
 
   const char* data   = method + method_len + 1;
 
-  if (check_request_str(data, address_char))
+  /* check for auth@addr separator */
+  const char* addr= strrchr(data, '@');
+  wsp::string remote_auth;
+  if (addr)
+  {
+    remote_auth.set(strndup(data, addr - data));
+    addr++;
+  }
+  else
+  {
+    // no auth part
+    addr= data;
+  }
+
+  if (check_request_str(addr, address_char))
   {
     WSREP_ERROR("Bad SST address string. SST canceled.");
     return WSREP_CB_FAILURE;
@@ -1841,15 +1838,25 @@ wsrep_cb_status_t wsrep_sst_donate_cb (void* app_ctx, void* recv_ctx,
   }
 
   int ret;
-  if ((ret= sst_append_auth_env(env, sst_auth_real)))
+  if ((ret= sst_append_env_var(env, WSREP_SST_AUTH_ENV, sst_auth_real)))
   {
     WSREP_ERROR("wsrep_sst_donate_cb(): appending auth env failed: %d", ret);
     return WSREP_CB_FAILURE;
   }
 
+  if (remote_auth())
+  {
+    if ((ret= sst_append_env_var(env, WSREP_SST_REMOTE_AUTH_ENV,remote_auth())))
+    {
+      WSREP_ERROR("wsrep_sst_donate_cb(): appending remote auth env failed: "
+                  "%d", ret);
+      return WSREP_CB_FAILURE;
+    }
+  }
+
   if (data_home_dir)
   {
-    if ((ret= sst_append_data_dir(env, data_home_dir)))
+    if ((ret= sst_append_env_var(env, DATA_HOME_DIR_ENV, data_home_dir)))
     {
       WSREP_ERROR("wsrep_sst_donate_cb(): appending data "
                   "directory failed: %d", ret);
@@ -1859,12 +1866,12 @@ wsrep_cb_status_t wsrep_sst_donate_cb (void* app_ctx, void* recv_ctx,
 
   if (!strcmp (WSREP_SST_MYSQLDUMP, method))
   {
-    ret = sst_donate_mysqldump(data, &current_gtid->uuid, uuid_str,
+    ret = sst_donate_mysqldump(addr, &current_gtid->uuid, uuid_str,
                                current_gtid->seqno, bypass, env());
   }
   else
   {
-    ret = sst_donate_other(method, data, uuid_str,
+    ret = sst_donate_other(method, addr, uuid_str,
                            current_gtid->seqno, bypass, env());
   }