diff --git a/README.md b/README.md index de5e390..50d0248 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,38 @@ -# screend +## ScreenD - Daemon with smaller daemons Simple screen daemon written in Go. + +### Installation +- `sudo su -` +- `cd /root` +- `git clone https://github.com/OkaeriPoland/screend` +- `cd screend` +- `go build -o screend` +- `chmod +x screend` +- `mv screend.sh /etc/init.d/screend` +- `chmod 755 /etc/init.d/screend` +- `chown root:root /etc/init.d/screend` +- `update.rc screend defaults` +- `/etc/init.d/screend start` + +### Removal +- `update.rc screend remove` +- `sudo rm -rf /root/screend /etc/init.d/screend` + +### Configuration +To add own screen to screend create new .ini file in `/root/screend/daemons`, then run `/etc/init.d/screend restart` + +```ini +[Screen] +name = Example Daemon +user = example + +[Execution] +run_directory = /home/example +command = bash + +[Daemon] +enabled = true +``` + +### Protip +As current installation method sucks, you can edit `screend.sh` and install screend in way you like. If you know what you are doing, of course. \ No newline at end of file diff --git a/screend.sh b/screend.sh new file mode 100644 index 0000000..5c415dd --- /dev/null +++ b/screend.sh @@ -0,0 +1,140 @@ +#!/bin/sh +### BEGIN INIT INFO +# Provides: screend +# Required-Start: $remote_fs $syslog +# Required-Stop: $remote_fs $syslog +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: screend init script +### END INIT INFO + +PATH=/sbin:/usr/sbin:/bin:/usr/bin +DESC="screend" +NAME="screend" +CWD=/root/screend +USER=root +GROUP=root +EXEC=/root/screend/screend +PIDFILE=/var/run/$NAME.pid +SCRIPTNAME=/etc/init.d/$NAME + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.2-14) to ensure that this file is present +# and status_of_proc is working. +. /lib/lsb/init-functions + +# +# Function that starts the daemon/service +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start \ + --quiet \ + --pidfile $PIDFILE \ + --user $USER \ + --exec $EXEC \ + --test > /dev/null \ + || return 1 + start-stop-daemon --start \ + --quiet \ + --make-pidfile \ + --pidfile $PIDFILE \ + --chuid $USER \ + --user $USER \ + --group $GROUP \ + --chdir $CWD \ + --background \ + --exec $EXEC \ + || return 2 +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop \ + --quiet \ + --user $USER \ + --pidfile $PIDFILE \ + --exec $EXEC \ + --retry=TERM/30/KILL/5 + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + rm -f $PIDFILE + return "$RETVAL" +} + +# +# Function that checks if the daemon is running +# +do_status() +{ + start-stop-daemon \ + --start \ + --test \ + --oknodo \ + --pidfile $PIDFILE \ + --user $USER \ + --exec $EXEC +} + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + + status) + do_status + ;; + + restart|force-reload) + + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac \ No newline at end of file