pkgsrc/mk/install/files

#!@SH@
#
# $NetBSD: files,v 1.6 2005/07/27 16:18:54 jlam Exp $
#
# +FILES - reference-counted configuration file management script
#
# Usage: ./+FILES ADD|REMOVE [metadatadir]
#        ./+FILES VIEW-REMOVE depotdir viewdir
#        ./+FILES CHECK-ADD|CHECK-REMOVE [metadatadir]
#
# This script supports two actions, ADD and REMOVE, that will add or
# remove the configuration files needed by the package associated with
# <metadatadir>.  The CHECK-ADD action will check whether any files
# needed by the package are missing, and print an informative message
# noting those files.  The CHECK-REMOVE action will check whether
# any files needed by the package still exist, and print an informative
# message noting those files.  The CHECK-ADD and CHECK-REMOVE actions
# return non-zero if they detect either missing or existing files,
# respectively.  The VIEW-REMOVE action will remove from <viewdir> the
# links to the configuration files in <depotdir>.
#
# Lines starting with "# FILE: " are data read by this script that
# name the files that this package requires to exist to function
# correctly, along with the locations of the example files, e.g.
#
#	# FILE: /etc/bar.conf c /example/bar.conf
#	# FILE: /etc/baz/conf c /example/baz.conf 0600 foo-user foo-group
#
# The second field in each FILE entry is a set of flags with the following
# meaning:
#
#	c	file is copied into place
#
CAT="@CAT@"
CP="@CP@"
CHGRP="@CHGRP@"
CHMOD="@CHMOD@"
CHOWN="@CHOWN@"
CMP="@CMP@"
ECHO="@ECHO@"
GREP="@GREP@"
MKDIR="@MKDIR@"
MV="@MV@"
PWD_CMD="@PWD_CMD@"
RM="@RM@"
RMDIR="@RMDIR@"
SED="@SED@"
SORT="@SORT@"
TEST="@TEST@"
TRUE="@TRUE@"

SELF=$0
ACTION=$1

case ${ACTION} in
VIEW-REMOVE)
	DEPOTDIR="$2"
	VIEWDIR="$3"
        ${TEST} -n "${DEPOTDIR}" -a -n "${VIEWDIR}" || exit 0
	;;
*)
	PKG_METADATA_DIR="${2-`${PWD_CMD}`}"
	: ${PKGNAME=${PKG_METADATA_DIR##*/}}
	: ${PKG_DBDIR=${PKG_METADATA_DIR%/*}}
	: ${PKG_REFCOUNT_DBDIR=${PKG_DBDIR}.refcount}
	PKG_REFCOUNT_FILES_DBDIR="${PKG_REFCOUNT_DBDIR}/files"
	;;
esac

exitcode=0
case $ACTION in
ADD)
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" ${SELF} | ${SORT} -u |
	{ while read file f_flags f_eg f_mode f_user f_group; do
		case $file in
		""|[!/]*)	continue ;;
		esac
		case $f_flags in
		*c*)	;;
		*)	continue ;;
		esac

		shadow_dir="${PKG_REFCOUNT_FILES_DBDIR}$file"
		perms="$shadow_dir/+PERMISSIONS"
		preexist="$shadow_dir/+PREEXISTING"
		token="$shadow_dir/${PKGNAME}"
		if ${TEST} ! -d "$shadow_dir"; then
			${MKDIR} $shadow_dir
			${TEST} ! -f "$file" ||
				${ECHO} "${PKGNAME}" > $preexist
		fi
		if ${TEST} -f "$token" && \
		   ${GREP} "^${PKG_METADATA_DIR}$" $token >/dev/null; then
			:
		else
			${ECHO} "${PKG_METADATA_DIR}" >> $token
		fi

		case $f_mode$f_user$f_group in
		"")	;;
	 	*)	${ECHO} "$f_mode $f_user $f_group" > $perms ;;
		esac
		if ${TEST} ! -f "$file" -a ! -f "$f_eg"; then
			:
		else
			case "$printed_header" in
			yes)	;;
			*)	printed_header=yes
				${ECHO} "==========================================================================="
				${ECHO} "Installing files needed by ${PKGNAME}:"
				;;
			esac
			if ${TEST} -f "$file"; then
				${ECHO} ""
				${ECHO} "	$file already exists."
			elif ${TEST} -f "$f_eg"; then
				${ECHO} ""
				${ECHO} "	$file"
				${ECHO} "	    [$f_eg]"
				${CP} $f_eg $file
				case $f_user in
				"")	;;
				*)	${CHOWN} $f_user $file ;;
				esac
				case $f_group in
				"")	;;
				*)	${CHGRP} $f_group $file ;;
				esac
				case $f_mode in
				"")	;;
				*)	${CHMOD} $f_mode $file ;;
				esac
			fi
		fi
	done
	case "$printed_header" in
	yes)	${ECHO} ""
		${ECHO} "==========================================================================="
		;;
	esac; }
	;;

REMOVE)
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" ${SELF} | ${SORT} -ru |
	while read file f_flags f_eg f_mode f_user f_group; do
		case $file in
		""|[!/]*)	continue ;;
		esac
		case $f_flags in
		*c*)	;;
		*)	continue ;;
		esac
		shadow_dir="${PKG_REFCOUNT_FILES_DBDIR}$file"
		perms="$shadow_dir/+PERMISSIONS"
		preexist="$shadow_dir/+PREEXISTING"
		token="$shadow_dir/${PKGNAME}"
		tokentmp="$token.tmp.$$"
		if ${TEST} -f "$token" && \
		   ${GREP} "^${PKG_METADATA_DIR}$" $token >/dev/null; then
			${CAT} "$token" | ${GREP} -v "^${PKG_METADATA_DIR}$" > $tokentmp
			case `${CAT} $tokentmp | ${SED} -n "$="` in
			"")
				if ${TEST} -f "$preexist"; then
					:
				elif ${TEST} -f "$file" -a -f "$f_eg" && \
				     ${CMP} -s "$file" "$f_eg"; then
					${RM} -f "$file"
				fi
				${RM} -f $perms $preexist $token $token.tmp.*
				${RMDIR} -p $shadow_dir 2>/dev/null || ${TRUE}
				;;
			*)
				${MV} -f $tokentmp $token
				;;
			esac
		fi
	done
	;;

VIEW-REMOVE)
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" ${SELF} | ${SORT} -ru |
	while read file f_flags f_eg f_mode f_user f_group; do
		case $file in
		${DEPOTDIR}/*)	;;
		*)		continue ;;
		esac
		link="${VIEWDIR}/${file#${DEPOTDIR}/}"
		dir="${link%[^/]*}"
		if ${TEST} -h "$link"; then
			${RM} -f $link
			${RMDIR} -p $dir 2>/dev/null || ${TRUE}
		fi
	done
	;;

CHECK-ADD)
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" ${SELF} | ${SORT} -ru |
	{ while read file f_flags f_eg f_mode f_user f_group; do
		case $file in
		""|[!/]*)	continue ;;
		*)		${TEST} ! -f "$file" || continue ;;
		esac
		case $f_flags in
		*c*)	;;
		*)	continue ;;
		esac
		case "$printed_header" in
		yes)	;;
		*)	printed_header=yes
			${ECHO} "==========================================================================="
			${ECHO} "The following files should be created for ${PKGNAME}:"
			;;
		esac
		${ECHO} ""
		case $f_mode/$f_user/$f_group in
		//)
			${ECHO} "	$file"
			;;
		[!/]*//)
			${ECHO} "	$file (m=$f_mode)"
			;;
		[!/]*/[!/]*/)
			${ECHO} "	$file (o=$f_user, m=$f_mode)"
			;;
		[!/]*/[!/]*/[!/]*)
			${ECHO} "	$file (o=$f_user, g=$f_group, m=$f_mode)"
			;;
		esac
		${TEST} ! -f "$f_eg" || ${ECHO} "	    [$f_eg]"
	done
	case "$printed_header" in
	yes)	${ECHO} ""
		${ECHO} "==========================================================================="
		exit 1
		;;
	esac; }
	${TEST} $? -eq 0 || exitcode=1
	;;

CHECK-REMOVE)
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" ${SELF} | ${SORT} -ru |
	{ while read file f_flags f_eg f_mode f_user f_group; do
		case $file in
		""|[!/]*)	continue ;;
		*)		${TEST} -f "$file" || continue ;;
		esac
		shadow_dir="${PKG_REFCOUNT_FILES_DBDIR}$file"
		${TEST} ! -d "$shadow_dir" || continue	# refcount isn't zero
		case "$printed_header" in
		yes)	;;
		*)	printed_header=yes
			${ECHO} "==========================================================================="
			${ECHO} "The following files are no longer being used by ${PKGNAME},"
			${ECHO} "and they can be removed if no other packages are using them:"
			${ECHO} ""
			;;
		esac
		${ECHO} "	$file"
	done
	case "$printed_header" in
	yes)	${ECHO} ""
		${ECHO} "==========================================================================="
		exit 1
		;;
	esac; }
	${TEST} $? -eq 0 || exitcode=1
	;;

*)
	${ECHO} "Usage: ./+FILES ADD|REMOVE [metadatadir]"
	${ECHO} "       ./+FILES VIEW-REMOVE depotdir viewdir"
	${ECHO} "       ./+FILES CHECK-ADD|CHECK-REMOVE [metadatadir]"
	;;
esac
exit $exitcode