[CLAMP] Allow to use ' in clamp mariadb passwords

' is one of characters that are placed in passwords by our default
password generation algorith. As ' is a special character in SQL files
we need to escape it before substituting environment variables in .sql file.

Issue-ID: OOM-2317
Reported-by: Fiachra Corcoran <fiachra.corcoran@est.tech>
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Change-Id: I0423b0eaecf7cc16892c10b14881c4d09a24a1d0

1 files changed, 193 insertions, 0 deletions

diff --git a/kubernetes/clamp/charts/mariadb/resources/config/init/docker-entrypoint.sh b/kubernetes/clamp/charts/mariadb/resources/config/init/docker-entrypoint.sh
new file mode 100755
index 0000000000..6c69694011
--- /dev/null
+++ b/kubernetes/clamp/charts/mariadb/resources/config/init/docker-entrypoint.sh
@@ -0,0 +1,193 @@
+#!/bin/bash
+set -eo pipefail
+shopt -s nullglob
+
+# if command starts with an option, prepend mysqld
+if [ "${1:0:1}" = '-' ]; then
+	set -- mysqld "$@"
+fi
+
+# skip setup if they want an option that stops mysqld
+wantHelp=
+for arg; do
+	case "$arg" in
+		-'?'|--help|--print-defaults|-V|--version)
+			wantHelp=1
+			break
+			;;
+	esac
+done
+
+# usage: file_env VAR [DEFAULT]
+#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
+# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
+#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
+file_env() {
+	local var="$1"
+	local fileVar="${var}_FILE"
+	local def="${2:-}"
+	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
+		echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
+		exit 1
+	fi
+	local val="$def"
+	if [ "${!var:-}" ]; then
+		val="${!var}"
+	elif [ "${!fileVar:-}" ]; then
+		val="$(< "${!fileVar}")"
+	fi
+	val=`echo -n $val | sed -e "s/'/''/g"`
+	export "$var"="$val"
+	unset "$fileVar"
+}
+
+_check_config() {
+	toRun=( "$@" --verbose --help --log-bin-index="$(mktemp -u)" )
+	if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
+		cat >&2 <<-EOM
+
+			ERROR: mysqld failed while attempting to check config
+			command was: "${toRun[*]}"
+
+			$errors
+		EOM
+		exit 1
+	fi
+}
+
+# Fetch value from server config
+# We use mysqld --verbose --help instead of my_print_defaults because the
+# latter only show values present in config files, and not server defaults
+_get_config() {
+	local conf="$1"; shift
+	"$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null \
+		| awk '$1 == "'"$conf"'" && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
+	# match "datadir      /some/path with/spaces in/it here" but not "--xyz=abc\n     datadir (xyz)"
+}
+
+# allow the container to be started with `--user`
+if [ "$1" = 'mysqld' -a -z "$wantHelp" -a "$(id -u)" = '0' ]; then
+	_check_config "$@"
+	DATADIR="$(_get_config 'datadir' "$@")"
+	mkdir -p "$DATADIR"
+	find "$DATADIR" \! -user mysql -exec chown mysql '{}' +
+	exec gosu mysql "$BASH_SOURCE" "$@"
+fi
+
+if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
+	# still need to check config, container may have started with --user
+	_check_config "$@"
+	# Get config
+	DATADIR="$(_get_config 'datadir' "$@")"
+
+	if [ ! -d "$DATADIR/mysql" ]; then
+		file_env 'MYSQL_ROOT_PASSWORD'
+		if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
+			echo >&2 'error: database is uninitialized and password option is not specified '
+			echo >&2 '  You need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD'
+			exit 1
+		fi
+
+		mkdir -p "$DATADIR"
+
+		echo 'Initializing database'
+		# "Other options are passed to mysqld." (so we pass all "mysqld" arguments directly here)
+		mysql_install_db --datadir="$DATADIR" --rpm "${@:2}"
+		echo 'Database initialized'
+
+		SOCKET="$(_get_config 'socket' "$@")"
+		"$@" --skip-networking --socket="${SOCKET}" &
+		pid="$!"
+
+		mysql=( mysql --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" )
+
+		for i in {30..0}; do
+			if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
+				break
+			fi
+			echo 'MySQL init process in progress...'
+			sleep 1
+		done
+		if [ "$i" = 0 ]; then
+			echo >&2 'MySQL init process failed.'
+			exit 1
+		fi
+
+		if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
+			# sed is for https://bugs.mysql.com/bug.php?id=20545
+			mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
+		fi
+
+		if [ ! -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
+			export MYSQL_ROOT_PASSWORD="$(pwgen -1 32)"
+			echo "GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
+		fi
+
+		rootCreate=
+		# default root to listen for connections from anywhere
+		file_env 'MYSQL_ROOT_HOST' '%'
+		if [ ! -z "$MYSQL_ROOT_HOST" -a "$MYSQL_ROOT_HOST" != 'localhost' ]; then
+			# no, we don't care if read finds a terminating character in this heredoc
+			# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
+			read -r -d '' rootCreate <<-EOSQL || true
+				CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
+				GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;
+			EOSQL
+		fi
+
+		"${mysql[@]}" <<-EOSQL
+			-- What's done in this file shouldn't be replicated
+			--  or products like mysql-fabric won't work
+			SET @@SESSION.SQL_LOG_BIN=0;
+
+			DELETE FROM mysql.user WHERE user NOT IN ('mysql.sys', 'mysqlxsys', 'root') OR host NOT IN ('localhost') ;
+			SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASSWORD}') ;
+			GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
+			${rootCreate}
+			DROP DATABASE IF EXISTS test ;
+			FLUSH PRIVILEGES ;
+		EOSQL
+
+		if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
+			mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
+		fi
+
+		file_env 'MYSQL_DATABASE'
+		if [ "$MYSQL_DATABASE" ]; then
+			echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
+			mysql+=( "$MYSQL_DATABASE" )
+		fi
+
+		file_env 'MYSQL_USER'
+		file_env 'MYSQL_PASSWORD'
+		if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
+			echo "CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;" | "${mysql[@]}"
+
+			if [ "$MYSQL_DATABASE" ]; then
+				echo "GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;" | "${mysql[@]}"
+			fi
+		fi
+
+		echo
+		for f in /docker-entrypoint-initdb.d/*; do
+			case "$f" in
+				*.sh)     echo "$0: running $f"; . "$f" ;;
+				*.sql)    echo "$0: running $f"; "${mysql[@]}" < "$f"; echo ;;
+				*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${mysql[@]}"; echo ;;
+				*)        echo "$0: ignoring $f" ;;
+			esac
+			echo
+		done
+
+		if ! kill -s TERM "$pid" || ! wait "$pid"; then
+			echo >&2 'MySQL init process failed.'
+			exit 1
+		fi
+
+		echo
+		echo 'MySQL init process done. Ready for start up.'
+		echo
+	fi
+fi
+
+exec "$@"