Icecast2 Streaming Client init.d for OpenRC

etc_init.d_ezstream

#!/sbin/openrc-run
# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

RUNAS_USER="${RUNAS_USER:-icecast}"
RUNAS_GROUP="${RUNAS_GROUP:-nogroup}"

CONFIG_FILE="${CONFIG_FILE:-/etc/icecast2/ezstream.xml}"
LOG_FILE="${LOG_FILE:-/var/log/icecast2/ezstream.log}"

LOCAL_ICECAST=${LOCAL_ICECAST:-yes}

AUTO_GENERATE_PLAYLIST="${AUTO_GENERATE_PLAYLIST:-yes}"
PLAYLIST="${PLAYLIST:-/run/icecast2/playlist.m3u}"
FORMAT="${FORMAT:-mp3}"

pidfile="${PIDFILE:-/run/icecast2/ezstream.pid}"

name="Icecast2 Streaming Client"

description="Ezstream is a command line source client for Icecast media streaming servers. It began as the successor of the old “shout” utility, and has since gained a lot of useful features."

description_reload="Send the SIGHUP to the process to read the ${CONFIG_FILE} again. The process id of running daemon can be found in ${pidfile}"

description_next_title="Send the SIGUSR1 to the process to skip the currently playing track and moves on to the next in playlist mode, or restarts the current track when streaming a single file."

required_files="${CONFIG_FILE}"

command="/usr/bin/ezstream"
command_args="-c ${CONFIG_FILE} ${EZSTREAM_OPTS}"
command_background="true"
start_stop_daemon_args="--stdout ${LOG_FILE} --stderr ${LOG_FILE}"
extra_started_commands="reload next_title"

depend() {
    if yesno "${LOCAL_ICECAST}"; then
        need icecast
    else
        need net
        # We should be after bootmisc so that /run is cleaned before we put our pidfile there.
        after bootmisc
    fi
}

start_pre() {
    # create directory for pid and autogenerated playlist
    checkpath --directory --owner ${RUNAS_USER}:${RUNAS_GROUP} --mode 0775 "$(dirname "${pidfile}")"
    
    # create directory for LOG_FILE
    checkpath --directory --owner ${RUNAS_USER}:${RUNAS_GROUP} --mode 0775 "$(dirname "${LOG_FILE}")"

    if yesno "${AUTO_GENERATE_PLAYLIST}"; then
        checkpath --file --file-truncate --owner ${RUNAS_USER}:${RUNAS_GROUP} --mode 0664 "${PLAYLIST}"
        
        create_playlist "${FILES_DIR}" "${FORMAT}"
    fi
}

reload() {
	ebegin "Reloading ${name} configuration"
    start-stop-daemon --signal HUP --pidfile "${pidfile}"	
	eend $?
}

next_title() {
    ebegin "${name} skip to the next track from playlist ${PLAYLIST}"
    start-stop-daemon --signal USR1 --pidfile "${pidfile}"
    eend $?
}

create_playlist() {
    local format_files_dir="$1"
    local format="$2"
    
    ebegin "Scanning ${format_files_dir} for files in ${FORMAT} format"

    if [ ! -d "${format_files_dir}" ]; then
        eend 1 "${format_files_dir} is not a directory"
    fi
    
    find "${format_files_dir}" -name "*.${FORMAT}" -type f -exec echo {} \; > ${PLAYLIST}
    
    einfo "${PLAYLIST} with `wc -l < ${PLAYLIST}` ${FORMAT} titles created"
}