asterisk_voicemail_parser

#!/bin/sh -eu
#
# Reads Asterisk voicemail messages and sends them to Matrix rooms
# which have #tele-EXTENSION:hacklab.fi alias. Works on Telegram
# bridged channels, too!

# Read configuration
. "`dirname $0`/matrix.conf"
. "`dirname $0`/functions.sh"

# Get Asterisk phone number. Do it without reading too much input (-u)
cid=`sed -un '/^X-Asterisk-CallerID/{s/[^:]*: //p;q}'`

# Unpacking message payload
dir=`mktemp -d`
cd $dir
munpack -t

myname=`sed -rn '/,$/{s/,$//p;q}' <part1`
mynum=`sed -rn '/mailbox/{s/[^0-9]*([0-9]*).*/\1/p;q}' <part1`
room="#tele-$mynum:$alias_homeserver"
export audioname="Viesti numerosta $cid"

# Encode audio
opusenc --artist "Numero $cid" --title "Viesti käyttäjälle $myname" -- *.wav viesti.opus

# Composing Matrix message. Specs: https://matrix.org/docs/spec/client_server/latest#m-audio
room_id="`get_id "$room"`"
matrix POST media/r0/upload audio/ogg <viesti.opus |
    jq '{"body": env.audioname, "msgtype": "m.audio", "info": {"mimetype":"audio/ogg"}, "url": .content_uri }' |
    matrix PUT "client/r0/rooms/$room_id/send/m.room.message/`uuidgen`" application/json

# Removing the temp dir
rm -r "$dir"