#!/bin/sh
set -e
bbnote () {
	echo "NOTE: $*"
}
bbwarn () {
	echo "WARNING: $*"
}
bbfatal () {
	echo "ERROR: $*"
	exit 1
}
perform_groupadd () {
	local rootdir="$1"
	local opts="$2"
	bbnote "systemd: Performing groupadd with [$opts]"
	local groupname=`echo "$opts" | awk '{ print $NF }'`
	local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
	if test "x$group_exists" = "x"; then
		eval flock -x $rootdir/etc -c \"$PSEUDO groupadd \$opts\" || true
		group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
		if test "x$group_exists" = "x"; then
			bbfatal "systemd: groupadd command did not succeed."
		fi
	else
		bbnote "systemd: group $groupname already exists, not re-creating it"
	fi
}
perform_useradd () {
	local rootdir="$1"
	local opts="$2"
	bbnote "systemd: Performing useradd with [$opts]"
	local username=`echo "$opts" | awk '{ print $NF }'`
	local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
	if test "x$user_exists" = "x"; then
		eval flock -x $rootdir/etc -c  \"$PSEUDO useradd \$opts\" || true
		user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
		if test "x$user_exists" = "x"; then
			bbfatal "systemd: useradd command did not succeed."
		fi
	else
		bbnote "systemd: user $username already exists, not re-creating it"
	fi
}
perform_groupmems () {
	local rootdir="$1"
	local opts="$2"
	bbnote "systemd: Performing groupmems with [$opts]"
	local groupname=`echo "$opts" | awk '{ for (i = 1; i < NF; i++) if ($i == "-g" || $i == "--group") print $(i+1) }'`
	local username=`echo "$opts" | awk '{ for (i = 1; i < NF; i++) if ($i == "-a" || $i == "--add") print $(i+1) }'`
	bbnote "systemd: Running groupmems command with group $groupname and user $username"
	local mem_exists="`grep "^$groupname:[^:]*:[^:]*:\([^,]*,\)*$username\(,[^,]*\)*$" $rootdir/etc/group || true`"
	if test "x$mem_exists" = "x"; then
		eval flock -x $rootdir/etc -c \"$PSEUDO groupmems \$opts\" || true
		mem_exists="`grep "^$groupname:[^:]*:[^:]*:\([^,]*,\)*$username\(,[^,]*\)*$" $rootdir/etc/group || true`"
		if test "x$mem_exists" = "x"; then
			bbfatal "systemd: groupmems command did not succeed."
		fi
	else
		bbnote "systemd: group $groupname already contains $username, not re-adding it"
	fi
}
OPT=""
SYSROOT=""

if test "x$D" != "x"; then
	# Installing into a sysroot
	SYSROOT="$D"
	OPT="--root $D"

	# Make sure login.defs is there, this is to make debian package backend work
	# correctly while doing rootfs.
	# The problem here is that if /etc/login.defs is treated as a config file for
	# shadow package, then while performing preinsts for packages that depend on
	# shadow, there might only be /etc/login.def.dpkg-new there in root filesystem.
	if [ ! -e $D/etc/login.defs -a -e $D/etc/login.defs.dpkg-new ]; then
	    cp $D/etc/login.defs.dpkg-new $D/etc/login.defs
	fi

	# user/group lookups should match useradd/groupadd --root
	export PSEUDO_PASSWD="$SYSROOT"
fi

# If we're not doing a special SSTATE/SYSROOT install
# then set the values, otherwise use the environment
if test "x$UA_SYSROOT" = "x"; then
	# Installing onto a target
	# Add groups and users defined only for this package
	GROUPADD_PARAM=""
	USERADD_PARAM="--system -d / -M --shell /sbin/nologin systemd-network"
	GROUPMEMS_PARAM=""
fi

# Perform group additions first, since user additions may depend
# on these groups existing
if test "x`echo $GROUPADD_PARAM | tr -d '[:space:]'`" != "x"; then
	echo "Running groupadd commands..."
	# Invoke multiple instances of groupadd for parameter lists
	# separated by ';'
	opts=`echo "$GROUPADD_PARAM" | cut -d ';' -f 1 | sed -e 's#[ \t]*$##'`
	remaining=`echo "$GROUPADD_PARAM" | cut -d ';' -f 2- | sed -e 's#[ \t]*$##'`
	while test "x$opts" != "x"; do
		perform_groupadd "$SYSROOT" "$OPT $opts"
		if test "x$opts" = "x$remaining"; then
			break
		fi
		opts=`echo "$remaining" | cut -d ';' -f 1 | sed -e 's#[ \t]*$##'`
		remaining=`echo "$remaining" | cut -d ';' -f 2- | sed -e 's#[ \t]*$##'`
	done
fi

if test "x`echo $USERADD_PARAM | tr -d '[:space:]'`" != "x"; then
	echo "Running useradd commands..."
	# Invoke multiple instances of useradd for parameter lists
	# separated by ';'
	opts=`echo "$USERADD_PARAM" | cut -d ';' -f 1 | sed -e 's#[ \t]*$##'`
	remaining=`echo "$USERADD_PARAM" | cut -d ';' -f 2- | sed -e 's#[ \t]*$##'`
	while test "x$opts" != "x"; do
		perform_useradd "$SYSROOT" "$OPT $opts"
		if test "x$opts" = "x$remaining"; then
			break
		fi
		opts=`echo "$remaining" | cut -d ';' -f 1 | sed -e 's#[ \t]*$##'`
		remaining=`echo "$remaining" | cut -d ';' -f 2- | sed -e 's#[ \t]*$##'`
	done
fi

if test "x`echo $GROUPMEMS_PARAM | tr -d '[:space:]'`" != "x"; then
	echo "Running groupmems commands..."
	# Invoke multiple instances of groupmems for parameter lists
	# separated by ';'
	opts=`echo "$GROUPMEMS_PARAM" | cut -d ';' -f 1 | sed -e 's#[ \t]*$##'`
	remaining=`echo "$GROUPMEMS_PARAM" | cut -d ';' -f 2- | sed -e 's#[ \t]*$##'`
	while test "x$opts" != "x"; do
		perform_groupmems "$SYSROOT" "$OPT $opts"
		if test "x$opts" = "x$remaining"; then
			break
		fi
		opts=`echo "$remaining" | cut -d ';' -f 1 | sed -e 's#[ \t]*$##'`
		remaining=`echo "$remaining" | cut -d ';' -f 2- | sed -e 's#[ \t]*$##'`
	done
fi