MDEV-27777: Some Galera tests fail on FreeBSD

This commit fixes problems due to bugs and quirks in bsdtar
(the FreeBSD version of tar). Separate tests are not required,
because without these fixes, many other tests fail when tested
in the FreeBSD environment.

Also, the grep patterns for reading utility version numbers
has been made more robust. The notation of some options of
the "cut" utility has been changed.

scripts/wsrep_sst_common.sh

@@ -336,7 +336,7 @@ case "$1" in
                        else
                            # If it's not bash, then we need to use slow
                            # external utilities:
-                           option=$(echo "$options" | cut -c1-1)
+                           option=$(echo "$options" | cut -c1)
                        fi
                        # And the subsequent characters consider option value:
                        value=""

scripts/wsrep_sst_mariabackup.sh

@@ -323,7 +323,8 @@ get_transfer()
         if [ "${sockopt#*,dhparam=}" != "$sockopt" ]; then
             if [ -z "$ssl_dhparams" ]; then
                 # Determine the socat version
-                SOCAT_VERSION=$(socat -V 2>&1 | grep -m1 -oe '[0-9]\.[0-9][\.0-9]*')
+                SOCAT_VERSION=$(socat -V 2>&1 | \
+                                grep -m1 -owE '[0-9]+(\.[0-9]+)+' | head -n1)
                 if [ -z "$SOCAT_VERSION" ]; then
                     wsrep_log_error "******** FATAL ERROR ******************"
                     wsrep_log_error "* Cannot determine the socat version. *"
@@ -766,7 +767,7 @@ recv_joiner()
 
         # check donor supplied secret
         SECRET=$(grep -F -- "$SECRET_TAG " "$MAGIC_FILE" 2>/dev/null | \
-                 cut -d ' ' -f 2)
+                 cut -d ' ' -f2)
         if [ "$SECRET" != "$MY_SECRET" ]; then
             wsrep_log_error "Donor does not know my secret!"
             wsrep_log_info "Donor: '$SECRET', my: '$MY_SECRET'"

scripts/wsrep_sst_rsync.sh

@@ -435,24 +435,38 @@ EOF
                     tar_type=0
                     if tar --help | grep -qw -F -- '--transform'; then
                         tar_type=1
-                    elif tar --help | grep -qw -E -- '-s[[:space:]]pattern'
+                    elif tar --version | grep -q -E '^bsdtar\>'; then
-                    then
                         tar_type=2
                     fi
+                    if [ $tar_type -ne 2 ]; then
+                        if [ -n "$BASH_VERSION" ]; then
+                            printf '%s' "$binlog_files" >&2
+                        else
+                            echo "$binlog_files" >&2
+                        fi
+                    fi
                     if [ $tar_type -ne 0 ]; then
                         # Preparing list of the binlog file names:
                         echo "$binlog_files" | {
                             binlogs=""
                             while read bin_file || [ -n "$bin_file" ]; do
                                 [ ! -f "$bin_file" ] && continue
+                                if [ -n "$BASH_VERSION" ]; then
+                                    first="${bin_file:0:1}"
+                                else
+                                    first=$(echo "$bin_file" | cut -c1)
+                                fi
+                                if [ "$first" = '-' -o "$first" = '@' ]; then
+                                    bin_file="./$bin_file"
+                                fi
                                 binlogs="$binlogs${binlogs:+ }'$bin_file'"
                             done
                             if [ -n "$binlogs" ]; then
-                                tar_options='/^.*\///g'
                                 if [ $tar_type -eq 1 ]; then
-                                    tar_options="--transform='s$tar_options'"
+                                    tar_options="--transform='s/^.*\///g'"
                                 else
-                                    tar_options="-s '$tar_options'"
+                                    # bsdtar handles backslash incorrectly:
+                                    tar_options="-s '?^.*/??g'"
                                 fi
                                 eval tar -P $tar_options \
                                          -cvf "'$BINLOG_TAR_FILE'" $binlogs >&2
@@ -465,6 +479,14 @@ EOF
                             [ ! -f "$bin_file" ] && continue
                             bin_dir=$(dirname "$bin_file")
                             bin_base=$(basename "$bin_file")
+                            if [ -n "$BASH_VERSION" ]; then
+                                first="${bin_base:0:1}"
+                            else
+                                first=$(echo "$bin_base" | cut -c1)
+                            fi
+                            if [ "$first" = '-' -o "$first" = '@' ]; then
+                                bin_base="./$bin_base"
+                            fi
                             if [ -n "$bin_dir" -a "$bin_dir" != '.' ]; then
                                 tar $tar_options "$BINLOG_TAR_FILE" \
                                     -C "$bin_dir" "$bin_base" >&2
@@ -740,7 +762,7 @@ EOF
                 exit 42
             fi
             CN=$("$OPENSSL_BINARY" x509 -noout -subject -in "$SSTCERT" | \
-                 tr ',' '\n' | grep -F 'CN =' | cut -d= -f2 | sed s/^\ // | \
+                 tr ',' '\n' | grep -F 'CN =' | cut -d '=' -f2 | sed s/^\ // | \
                  sed s/\ %//)
         fi
         MY_SECRET="$(wsrep_gen_secret)"
@@ -781,7 +803,7 @@ EOF
         if [ -n "$MY_SECRET" ]; then
             # Check donor supplied secret:
             SECRET=$(grep -F -- "$SECRET_TAG " "$MAGIC_FILE" 2>/dev/null | \
-                     cut -d ' ' -f 2)
+                     cut -d ' ' -f2)
             if [ "$SECRET" != "$MY_SECRET" ]; then
                 wsrep_log_error "Donor does not know my secret!"
                 wsrep_log_info "Donor: '$SECRET', my: '$MY_SECRET'"
@@ -840,12 +862,20 @@ EOF
             binlog_cd=0
             if [ -n "$binlog_dir" -a "$binlog_dir" != '.' ]; then
                 [ ! -d "$binlog_dir" ] && mkdir -p "$binlog_dir"
-                cd "$binlog_dir"
                 binlog_cd=1
+                cd "$binlog_dir"
             fi
             # Extracting binlog files:
             wsrep_log_info "Extracting binlog files:"
-            if ! tar -xvf "$BINLOG_TAR_FILE" > "$tmpfile"; then
+            RC=0
+            if tar --version | grep -q -E '^bsdtar\>'; then
+                tar -tf "$BINLOG_TAR_FILE" > "$tmpfile" && \
+                tar -xvf "$BINLOG_TAR_FILE" > /dev/null || RC=$?
+            else
+                tar -xvf "$BINLOG_TAR_FILE" > "$tmpfile" && \
+                cat "$tmpfile" >&2 || RC=$?
+            fi
+            if [ $RC -ne 0 ]; then
                 rm -f "$tmpfile"
                 wsrep_log_error "Error unpacking tar file with binlog files"
                 exit 32

scripts/wsrep_sst_xtrabackup-v2.sh

@@ -328,7 +328,8 @@ get_transfer()
         if [ "${sockopt#*,dhparam=}" != "$sockopt" ]; then
             if [ -z "$ssl_dhparams" ]; then
                 # Determine the socat version
-                SOCAT_VERSION=$(socat -V 2>&1 | grep -m1 -oe '[0-9]\.[0-9][\.0-9]*')
+                SOCAT_VERSION=$(socat -V 2>&1 | \
+                                grep -m1 -owE '[0-9]+(\.[0-9]+)+' | head -n1)
                 if [ -z "$SOCAT_VERSION" ]; then
                     wsrep_log_error "******** FATAL ERROR ******************"
                     wsrep_log_error "* Cannot determine the socat version. *"
@@ -778,7 +779,7 @@ recv_joiner()
 
         # check donor supplied secret
         SECRET=$(grep -F -- "$SECRET_TAG " "$MAGIC_FILE" 2>/dev/null | \
-                 cut -d ' ' -f 2)
+                 cut -d ' ' -f2)
         if [ "$SECRET" != "$MY_SECRET" ]; then
             wsrep_log_error "Donor does not know my secret!"
             wsrep_log_info "Donor: '$SECRET', my: '$MY_SECRET'"
@@ -835,7 +836,7 @@ monitor_process()
 XB_REQUIRED_VERSION='2.3.5'
 
 XB_VERSION=$($BACKUP_BIN --version 2>&1 | \
-             grep -oe '[0-9]\.[0-9][\.0-9]*' | head -n1)
+             grep -m1 -owE '[0-9]+(\.[0-9]+)+' | head -n1)
 if [ -z "$XB_VERSION" ]; then
     wsrep_log_error "FATAL: Cannot determine the $BACKUP_BIN version." \
                     "Needs xtrabackup-$XB_REQUIRED_VERSION or higher to" \
@@ -1212,7 +1213,6 @@ then
     # May need xtrabackup_checkpoints later on
     [ -f "$DATA/xtrabackup_binary"      ] && rm -f "$DATA/xtrabackup_binary"
     [ -f "$DATA/xtrabackup_galera_info" ] && rm -f "$DATA/xtrabackup_galera_info"
-    [ -f "$DATA/ib_logfile0"            ] && rm -f "$DATA/ib_logfile0"
 
     ADDR="$WSREP_SST_OPT_ADDR"