watchcat: add with myself as maintainer

Signed-off-by: Roger D rogerdammit@gmail.com

utils/watchcat/Makefile

@@ -0,0 +1,44 @@
+#
+# 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))

utils/watchcat/files/initd_watchcat

@@ -0,0 +1,108 @@
+#!/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
+}

utils/watchcat/files/uci_defaults_watchcat

@@ -0,0 +1,10 @@
+#!/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
+}

utils/watchcat/files/watchcat.sh

@@ -0,0 +1,69 @@
+#!/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