#!/bin/bash

# standard rsync port is 873, I choose 8873 for userside listen.
PORT=8873

printf "Examples of get with rsync (full rsync):\n"

msg="    rsync -Pa 'rsync://%s:${PORT}/qrs/.' .\n"
printf "$msg" "${HOSTNAME}.local"
printf "$msg" "${HOSTNAME}"

for ipv6 in ::1 \
    $(ip -oneline -family inet6 address show scope site \
    | sed 's/^.*inet6 \([0-9:a-fA-F]\+\).*$/\1/') \
    $(ip -oneline -family inet6 address show scope global \
    | sed 's/^.*inet6 \([0-9:a-fA-F]\+\).*$/\1/') \
; do
    printf "$msg" "[${ipv6}]"
done

for ipv4 in $(ip -oneline -family inet address show \
    | sed 's/^.*inet \([0-9.]\+\).*$/\1/'); do
    printf "$msg" "${ipv4}"
done

# <(cat <<EOF ... EOF) redirection does not work with rsync, I suspect the
# daemon to read two times the file. Make a real file instead and delete it
# with a trap.

CONF=$(mktemp)
cleanup() { rm -f "$CONF"; }
trap cleanup EXIT INT QUIT HUP TERM ABRT

cat >"$CONF" <<EOF
# GLOBAL OPTIONS
#motd file=/etc/motd
#log file=/var/log/rsyncd
# for pid file, do not use /var/run/rsync.pid if
# you are going to run rsync out of the init.d script.
# The init.d script does its own pid file handling,
# so omit the "pid file" line completely in that case.
# pid file=/var/run/rsyncd.pid
#syslog facility=daemon
#socket options=
port = $PORT
reverse lookup = no

# MODULE OPTIONS
[qrs]
path = $PWD
use chroot = no

#comment = public archive
#use chroot = no
#max connections=10
#lock file = /var/lock/rsyncd
# the default for read only is yes...
#read only = yes
#list = yes
#uid = nobody
#gid = nogroup
#exclude =
#exclude from =
#include =
#include from =
#auth users =
#secrets file = /etc/rsyncd.secrets
#strict modes = yes
#hosts allow =
#hosts deny =
#ignore errors = no
#ignore nonreadable = yes
#transfer logging = no
#log format = %t: host %h (%a) %o %f (%l bytes). Total %b bytes.
#timeout = 600
#refuse options = checksum dry-run
#dont compress = *.gz *.tgz *.zip *.z *.rpm *.deb *.iso *.bz2 *.tbz
EOF

rsync --daemon --no-detach --log-file=/dev/stderr --config="$CONF"