# $NetBSD: files,v 1.11 2020/04/15 13:33:32 sborrill Exp $
#
# Generate a +FILES script that reference counts config files that are
# required for the proper functioning of the package.
#
case "${STAGE},$1" in
UNPACK,|UNPACK,+FILES)
	${CAT} > ./+FILES << 'EOF'
#!/bin/sh
#
# +FILES - reference-counted configuration file management script
#
# Usage: ./+FILES ADD|REMOVE|PERMS [metadatadir]
#        ./+FILES CHECK-ADD|CHECK-REMOVE|CHECK-PERMS [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 PERMS action
# will correct any ownership or permission discrepancies between the
# existing files and the data in this script, and the CHECK-PERMS
# action will check whether any files have the wrong ownership or
# permission and print an informative message noting those files.  The
# CHECK-PERMS action will return non-zero if it detects files with
# wrong ownership or permissions.
#
# 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
#
# For each FILE entry, if the file path is relative, then it is taken to
# be relative to ${PKG_PREFIX}.
#
# The second field in each FILE entry is a set of flags with the following
# meaning:
#
#	c	file is copied into place
#	f	ignore ${PKG_CONFIG}
#	r	file is an rc.d script (consider ${PKG_RCD_SCRIPTS})
#
AWK="/usr/bin/awk"
CAT="/bin/cat"
CP="/bin/cp"
CHGRP="/usr/bin/chgrp"
CHMOD="/bin/chmod"
CHOWN="/usr/sbin/chown"
CMP="/usr/bin/cmp"
ECHO="echo"
GREP="/usr/bin/grep"
LS="/bin/ls"
MKDIR="/bin/mkdir -p"
MV="mv -f"
PWD_CMD="/bin/pwd"
RM="/bin/rm"
RMDIR="/bin/rmdir"
SED="/usr/bin/sed"
SORT="/usr/bin/sort"
TEST="test"
TRUE="true"

SELF=$0
ACTION=$1

: "${PKG_PREFIX=/usr/pkg}"

case "${PKG_CONFIG:-YES}" in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
	_PKG_CONFIG=yes
	;;
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
	_PKG_CONFIG=no
	;;
esac
case "${PKG_CONFIG_PERMS:-NO}" in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
	_PKG_CONFIG_PERMS=yes
	;;
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
	_PKG_CONFIG_PERMS=no
	;;
esac
case "${PKG_RCD_SCRIPTS:-NO}" in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
	_PKG_RCD_SCRIPTS=yes
	;;
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
	_PKG_RCD_SCRIPTS=no
	;;
esac

CURDIR=`${PWD_CMD}`
PKG_METADATA_DIR="${2-${CURDIR}}"
: ${PKGNAME="${PKG_METADATA_DIR##*/}"}
: ${PKG_DBDIR="${PKG_METADATA_DIR%/*}"}
: "${PKG_REFCOUNT_DBDIR=${PKG_DBDIR}.refcount}"
PKG_REFCOUNT_FILES_DBDIR="${PKG_REFCOUNT_DBDIR}/files"

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 $file in
		"")	continue ;;
		[!/]*)	file="${PKG_PREFIX}/$file" ;;
		esac
		case $f_flags in
		*c*)	;;
		*)	continue ;;
		esac
		case $f_eg in
		"")	continue ;;
		[!/]*)	f_eg="${PKG_PREFIX}/$f_eg" ;;
		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 "$f_eg" -a ! -c "$f_eg"; then
			:
		else
			case "$f_flags:$_PKG_CONFIG:$_PKG_RCD_SCRIPTS" in
			*f*:*:*|[!r]:yes:*|[!r][!r]:yes:*|[!r][!r][!r]:yes:*|*r*:yes:yes)
				if ${TEST} -f "$file"; then
					${ECHO} "${PKGNAME}: $file already exists"
				elif ${TEST} -f "$f_eg" -o -c "$f_eg"; then
					${ECHO} "${PKGNAME}: copying $f_eg to $file"
					${CP} "$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
				;;
			esac
		fi
	done
	;;

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 $file in
		"")	continue ;;
		[!/]*)	file="${PKG_PREFIX}/$file" ;;
		esac
		case $f_flags in
		*c*)	;;
		*)	continue ;;
		esac
		case $f_eg in
		"")	continue ;;
		[!/]*)	f_eg="${PKG_PREFIX}/$f_eg" ;;
		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 \( -f "$f_eg" -o -c "$f_eg" \) && \
				     ${CMP} -s "$file" "$f_eg"; then
					case "$f_flags:$_PKG_CONFIG:$_PKG_RCD_SCRIPTS" in
					*f*:*:*|[!r]:yes:*|[!r][!r]:yes:*|[!r][!r][!r]:yes:*|*r*:yes:yes)
						${RM} -f "$file"
						;;
					esac
				fi
				${RM} -f "$perms" "$preexist" "$token" "$token.tmp".*
				${RMDIR} -p "$shadow_dir" 2>/dev/null || ${TRUE}
				;;
			*)
				${MV} -f "$tokentmp" "$token"
				;;
			esac
		fi
	done
	;;

PERMS)
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" "${SELF}" | ${SORT} -ru |
	while read file f_flags f_eg f_mode f_user f_group; do
		case $_PKG_CONFIG:$_PKG_CONFIG_PERMS in
		yes:yes)	;;
		*)		continue ;;
		esac
		case $file in
		"")	continue ;;
		[!/]*)	file="${PKG_PREFIX}/$file" ;;
		esac
		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
	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 $file in
		"")	continue ;;
		[!/]*)	file="${PKG_PREFIX}/$file" ;;
		esac
		${TEST} ! -f "$file" || continue
		case $f_flags in
		*c*)	;;
		*)	continue ;;
		esac
		case $f_eg in
		"")	continue ;;
		[!/]*)	f_eg="${PKG_PREFIX}/$f_eg" ;;
		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} "	$file (m=$f_mode, o=$f_user)"
			;;
		[!:]*:[!:]*:[!:]*)
			${ECHO} "	$file (m=$f_mode, o=$f_user, g=$f_group)"
			;;
		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 $file in
		"")	continue ;;
		[!/]*)	file="${PKG_PREFIX}/$file" ;;
		esac
		${TEST} -f "$file" || continue
		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
	;;

CHECK-PERMS)
	tmpdir="./.pkginstall.$$"
	${MKDIR} -p "$tmpdir" 2>/dev/null || exit 1
	${CHMOD} 0700 "$tmpdir"
	${SED} -n "/^\# FILE: /{s/^\# FILE: //;p;}" "${SELF}" | ${SORT} -ru |
	{ while read file f_flags f_eg f_mode f_user f_group; do
		case $file in
		"")	continue ;;
		[!/]*)	file="${PKG_PREFIX}/$file" ;;
		esac
		${TEST} -f "$file" || continue
		case $f_mode:$f_user:$f_group in
		::)	continue ;;
		esac

		perms=`${LS} -l "$file" | ${AWK} '{ print $1":"$3":"$4 }'`
		testpath="$tmpdir/file_perms"
		${ECHO} > "$testpath"
		${CHMOD} "$f_mode" "$testpath" 2>/dev/null
		longmode=`${LS} -l "$testpath" | ${AWK} '{ print $1 }'`
		case $f_mode:$f_user:$f_group in
		:[!:]*:)
			case "$perms" in
			*:"$f_user":*)	continue ;;
			esac
			;;
		:[!:]*:[!:]*)
			case "$perms" in
			*:"$f_user":"$f_group")	continue ;;
			esac
			;;
		[!:]*::)
			case "$perms" in
			"$longmode":*:*)	continue ;;
			esac
			;;
		[!:]*:[!:]*:)
			case "$perms" in
			"$longmode":"$f_user":*)	continue ;;
			esac
			;;
		[!:]*:[!:]*:[!:]*)
			case "$perms" in
			"$longmode":"$f_user":"$f_group")	continue ;;
			esac
			;;
		esac

		case "$printed_header" in
		yes)	;;
		*)	printed_header=yes
			${ECHO} "==========================================================================="
			${ECHO} "The following files are used by ${PKGNAME} and have"
			${ECHO} "the wrong ownership and/or permissions:"
			${ECHO} ""
			;;
		esac
		case $f_mode:$f_user:$f_group in
		[!:]*::)
			${ECHO} "	$file (m=$f_mode)"
			;;
		[!:]*:[!:]*:)
			${ECHO} "	$file (m=$f_mode, o=$f_user)"
			;;
		[!:]*:[!:]*:[!:]*)
			${ECHO} "	$file (m=$f_mode, o=$f_user, g=$f_group)"
			;;
		esac
	done
	case "$printed_header" in
	yes)	${ECHO} ""
		${ECHO} "==========================================================================="
		exit 1
		;;
	esac; }
	${TEST} $? -eq 0 || exitcode=1
	${RM} -fr "$tmpdir"
	;;

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

EOF
	${SED} -n "/^\# FILE: /p" "${SELF}" >> ./+FILES
	${CHMOD} +x ./+FILES
	;;
esac
