/usr/share/shorewall/macro.PostgreSQL is in shorewall 5.0.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Shorewall - PostgreSQL Macro
#
# /usr/share/shorewall/macro.PostgreSQL
#
#	This macro handles connections to the PostgreSQL server.
#
###############################################################################
#ACTION	SOURCE	DEST	PROTO	DEST	SOURCE	ORIGIN	RATE	USER/
#				PORT(S)	PORT(S)	DEST	LIMIT	GROUP
PARAM	-	-	tcp	5432
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