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