#!/bin/sh
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# Converts a uci config file into an appropriate mosquitto.conf snippet
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# expected to be used in an init file to generate a config file to run from
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# Karl Palsson <karlp@remake.is> 2012.
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# Considered to be released into the public domain
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[ -f $IPKG_INSTROOT/lib/functions.sh ] && . $IPKG_INSTROOT/lib/functions.sh
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TCONF=/tmp/mosquitto.generated.$$.conf
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while getopts "f:" o; do
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case $o in
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f)
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TCONF=$OPTARG
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;;
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esac
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done
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if [ -e $TCONF ]; then
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echo "Odd, same temporary generated config file already existed: $TCONF"
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exit 1
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fi
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echo "Generating mosquitto config file in $TCONF"
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NOW=$(date)
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echo "# mosquitto.conf file generated from UCI config." >>$TCONF
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echo "# Config snippet generated by $0 on $NOW" >>$TCONF
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echo "#" >> $TCONF
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# Usage: append_if cfg uci_name output_name
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# add a config line of the form "output_name <value>"
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# if the "uci_name" was found.
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# output_name defaults to uci_name if not specified.
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append_if() {
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local cfg="$1"
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local uci_name="$2"
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local out_name="$3"
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if [ -z "$out_name" ]; then
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out_name=$uci_name
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fi
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config_get val $cfg $uci_name
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if [ -n "$val" ]; then
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echo "$out_name $val" >> $TCONF
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fi
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}
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# mosquitto uses true/false, uci uses 1/0
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# note that this is not shell truthy, but equality with 1!
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append_bool() {
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if [ $2 -eq 1 ]; then
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echo "$1 true" >> $TCONF
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else
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echo "$1 false" >> $TCONF
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fi
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}
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# as per append_if, but gets the value as a uci bool, not raw
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append_optional_bool() {
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local cfg="$1"
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local uci_name="$2"
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local out_name="$3"
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config_get val $cfg $uci_name
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if [ -n "$val" ]; then
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config_get_bool real $cfg $uci_name
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append_bool $out_name $real
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fi
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}
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mosq_general() {
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config_get destinations "$1" log_dest
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for dest in $destinations; do
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echo "log_dest $dest" >> $TCONF
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done
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config_get_bool no_remote "$1" no_remote_access 0
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if [ "$no_remote" -eq 1 ]; then
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echo "bind_address 127.0.0.1" >> $TCONF
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fi
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config_get port "$1" port 1883
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echo "port $port" >> $TCONF
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append_if "$1" protocol
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append_if "$1" max_inflight_messages
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append_if "$1" max_queued_messages
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}
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add_listener() {
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echo "" >> $TCONF
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config_get port "$1" port
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if [ -z "$port" ]; then
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echo "Ignoring listener section without port"
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return
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fi
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config_get_bool no_remote "$1" no_remote_access 0
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if [ "$no_remote" -eq 1 ]; then
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echo "listener $port 127.0.0.1" >> $TCONF
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else
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echo "listener $port" >> $TCONF
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fi
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append_if "$1" protocol
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}
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add_topic() {
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echo "topic $1" >> $TCONF
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}
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add_bridge() {
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config_get conn "$1" connection
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config_get addr "$1" address
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if [ -z "$conn" -o -z "$addr" ]; then
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echo "Ignoring bridge section, misisng connection/address"
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return
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fi
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echo "" >> $TCONF
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echo "# Bridge connection from UCI section" >> $TCONF
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append_if "$1" connection
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append_if "$1" address
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config_list_foreach "$1" topic add_topic
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append_optional_bool "$1" cleansession cleansession
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append_optional_bool "$1" try_private try_private
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append_if "$1" clientid
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append_if "$1" identity bridge_identity
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append_if "$1" psk bridge_psk
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append_if "$1" tls_version bridge_tls_version
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}
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config_load "mosquitto"
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config_foreach mosq_general "mosquitto"
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config_foreach add_listener "listener"
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config_foreach add_bridge "bridge"
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