--- /dev/null
+#
+# Copyright (C) 2010 segal.di.ubi.pt
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=watchcat
+PKG_VERSION:=1
+PKG_RELEASE:=5
+
+PKG_MAINTAINER:=Roger D <rogerdammit@gmail.com>
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/watchcat
+ SECTION:=utils
+ CATEGORY:=Utilities
+ TITLE:=Enable the configuration of programed reboots
+endef
+
+define Package/watchcat/description
+Allows to configure a periodically reboot, or after loosing internet connectivity. Configured trough UCI /etc/config/system.
+endef
+
+define Package/watchcat/conffiles
+/etc/config/system
+endef
+
+define Build/Compile
+endef
+
+define Package/watchcat/install
+ $(INSTALL_DIR) $(1)/etc/init.d
+ $(INSTALL_BIN) ./files/initd_watchcat $(1)/etc/init.d/watchcat
+ $(INSTALL_DIR) $(1)/usr/bin
+ $(INSTALL_BIN) ./files/watchcat.sh $(1)/usr/bin/watchcat.sh
+ $(INSTALL_DIR) $(1)/etc/uci-defaults
+ $(INSTALL_BIN) ./files/uci_defaults_watchcat $(1)/etc/uci-defaults/50-watchcat
+endef
+
+$(eval $(call BuildPackage,watchcat))
--- /dev/null
+#!/bin/sh /etc/rc.common
+
+START=97
+
+PIDFILE="/tmp/run/watchcat"
+
+append_string() {
+ local varname="$1"; local add="$2"; local separator="${3:- }"; local actual
+ eval "actual=\$$varname"
+
+ new="${actual:+$actual$separator}$add"
+ eval "$varname=\$new"
+}
+
+timetoseconds() {
+ local time=$1
+ unset seconds
+
+ { [ "$time" -ge 1 ] 2> /dev/null && seconds="$time"; } || \
+ { [ "${time%s}" -ge 1 ] 2> /dev/null && seconds="${time%s}"; } || \
+ { [ "${time%m}" -ge 1 ] 2> /dev/null && seconds=$((${time%m}*60)); } || \
+ { [ "${time%h}" -ge 1 ] 2> /dev/null && seconds=$((${time%h}*3600)); } || \
+ { [ "${time%d}" -ge 1 ] 2> /dev/null && seconds=$((${time%d}*86400)); }
+}
+
+load_watchcat() {
+ config_get period $1 period
+ config_get mode $1 mode "allways"
+ config_get pinghosts $1 pinghosts "8.8.8.8"
+ config_get pingperiod $1 pingperiod
+ config_get forcedelay $1 forcedelay "0"
+
+ error=""
+
+ timetoseconds "$period"
+ period="$seconds"
+ [ "$period" -ge 1 ] \
+ || append_string "error" 'period is not a valid time value (ex: "30"; "4m"; "6h"; "2d")' "; "
+ [ "$mode" = "allways" -o "$mode" = "ping" ] \
+ || append_string "error" "mode must be 'allways' or 'ping'" "; "
+ [ -n "$pinghosts" -o "$mode" = "allways" ] \
+ || append_string "error" "pinghosts must be set when in 'ping' mode" "; "
+ [ "$mode" = "ping" ] && {
+ if [ -n "$pingperiod" ]
+ then
+ timetoseconds "$pingperiod"
+ pingperiod="$seconds"
+ if [ "$pingperiod" -ge 0 ]
+ then
+ [ "$pingperiod" -le "$period" ] \
+ || append_string "error" "pingperiod must be less than period" "; "
+ else
+ append_string "error" 'pingperiod is not a valid time value (ex: "30"; "4m"; "6h"; "2d")' "; "
+ fi
+ else
+ pingperiod="$((period/20))"
+ fi
+ }
+ [ "$pingperiod" -lt "$period" -o "$mode" = "allways" ] \
+ || append_string "error" "pingperiod is not recognized" "; "
+ [ "$forcedelay" -ge 0 ] \
+ || append_string "error" "forcedelay must be a integer greater or equal than 0, where 0 means disabled" "; "
+
+ [ -n "$error" ] && { logger -p user.err -t "watchcat" "reboot program $1 not started - $error"; return; }
+
+ if [ "$mode" = "allways" ]
+ then
+ /usr/bin/watchcat.sh "allways" "$period" "$forcedelay" &
+ logger -p user.info -t "wathchat" "started task (mode=$mode;period=$period;forcedelay=$forcedelay)"
+ else
+ /usr/bin/watchcat.sh "period" "$period" "$forcedelay" "$pinghosts" "$pingperiod" &
+ logger -p user.info -t "wathchat" "started task (mode=$mode;period=$period;pinghosts=$pinghosts;pingperiod=$pingperiod;forcedelay=$forcedelay)"
+ fi
+
+ echo $! >> "${PIDFILE}.pids"
+}
+
+stop() {
+ if [ -f "${PIDFILE}.pids" ]
+ then
+ logger -p user.info -t "watchcat" "stopping all tasks"
+
+ while read pid
+ do
+ kill "$pid"
+ done < "${PIDFILE}.pids"
+
+ rm "${PIDFILE}.pids"
+
+ logger -p user.info -t "watchcat" "all tasks stopped"
+ else
+ logger -p user.info -t "watchcat" "no tasks running"
+ fi
+}
+
+start() {
+ [ -f "${PIDFILE}.pids" ] && stop
+
+ config_load system
+ if [ -n "$(uci show system.@watchcat[0])" ] # at least one watchcat section exists
+ then
+ logger -p user.info -t "watchcat" "starting all tasks"
+ config_foreach load_watchcat watchcat
+ logger -p user.info -t "watchcat" "all tasks started"
+ else
+ logger -p user.info -t "watchcat" "no tasks defined"
+ fi
+}
--- /dev/null
+#!/bin/sh
+
+uci -q show system.@watchcat[0] || {
+ uci add system watchcat
+ uci set system.@watchcat[0].period=6h
+ uci set system.@watchcat[0].mode=ping
+ uci set system.@watchcat[0].pinghosts=8.8.8.8
+ uci set system.@watchcat[0].forcedelay=30
+ uci commit
+}
--- /dev/null
+#!/bin/sh
+
+mode="$1"
+
+shutdown_now() {
+ local forcedelay="$1"
+
+ reboot &
+
+ [ "$forcedelay" -ge 1 ] && {
+ sleep "$forcedelay"
+
+ echo b > /proc/sysrq-trigger # Will immediately reboot the system without syncing or unmounting your disks.
+ }
+}
+
+watchcat_allways() {
+ local period="$1"; local forcedelay="$2"
+
+ sleep "$period" && shutdown_now "$forcedelay"
+}
+
+watchcat_ping() {
+ local period="$1"; local forcedelay="$2"; local pinghosts="$3"; local pingperiod="$4"
+
+ time_now="$(cat /proc/uptime)"
+ time_now="${time_now%%.*}"
+ time_lastcheck="$time_now"
+ time_lastcheck_withinternet="$time_now"
+
+ while true
+ do
+ # account for the time ping took to return. With a ping time of 5s, ping might take more than that, so it is important to avoid even more delay.
+ time_now="$(cat /proc/uptime)"
+ time_now="${time_now%%.*}"
+ time_diff="$((time_now-time_lastcheck))"
+
+ [ "$time_diff" -lt "$pingperiod" ] && {
+ sleep_time="$((pingperiod-time_diff))"
+ sleep "$sleep_time"
+ }
+
+ time_now="$(cat /proc/uptime)"
+ time_now="${time_now%%.*}"
+ time_lastcheck="$time_now"
+
+ for host in "$pinghosts"
+ do
+ if ping -c 1 "$host" &> /dev/null
+ then
+ time_lastcheck_withinternet="$time_now"
+ else
+ time_diff="$((time_now-time_lastcheck_withinternet))"
+ logger -p daemon.info -t "watchcat[$$]" "no internet connectivity for $time_diff seconds. Reseting when reaching $period"
+ fi
+ done
+
+ time_diff="$((time_now-time_lastcheck_withinternet))"
+ [ "$time_diff" -ge "$period" ] && shutdown_now "$forcedelay"
+
+ done
+}
+
+ if [ "$mode" = "allways" ]
+ then
+ watchcat_allways "$2" "$3"
+ else
+ watchcat_ping "$2" "$3" "$4" "$5"
+ fi
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