#!/bin/ash -- sourced

# Required vars from context:
# USER_UID
# USER_GID
# USER_NAME

# 1) Sanitize the user's home directory, stored and updated in USER_HOME

# 2) Write entry to /etc/passwd if it doesn't exist

# Fixup local home path
if [ -z "$USER_HOME" ] || [ "${USER_HOME:0:1}" = '\' ] || [ "${USER_HOME:1:1}" = ':' ]; then
	USER_HOME="/home/_temp-home/$USER_NAME"
else
	# Make sure it's absolute, replace spaces, '\' and ':' by '_'
	USER_HOME=$(echo "$USER_HOME" | sed -r 's,^(/*)(.*)$,/\2,;s/(:|\s|\\)+/_/g')
fi
readonly USER_HOME

# Add/replace passwd entry if it doesn't exist yet
LINE_PASS="${USER_NAME}:x:${USER_UID}:${USER_GID}:${USER_NAME}:${USER_HOME}:/bin/bash"
readonly LINE_PASS
if ! grep -Fxq -- "${LINE_PASS}" /etc/passwd; then
	sed -i "/^${USER_NAME}:/d" /etc/passwd
	echo "${LINE_PASS}" >> /etc/passwd
fi