[packages] add package watchcat: Allows to configure a periodically reboot, or after...

SVN-Revision: 24692

diff --git a/utils/watchcat/Makefile b/utils/watchcat/Makefile
new file mode 100644 (file)
index 0000000..1c68251
--- /dev/null
+++ b/utils/watchcat/Makefile
@@ -0,0 +1,39 @@
+# 
+# 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:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/watchcat
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Enable the configuration of programed reboots
+  MAINTAINER:=Nuno Goncalves <nunojpg@gmail.com>
+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
+       $(CP) ./files/initd_watchcat $(1)/etc/init.d/watchcat
+       $(CP) ./files/uci_defaults_watchcat $(1)/etc/defaults/50-watchcat
+endef
+
+$(eval $(call BuildPackage,watchcat))

diff --git a/utils/watchcat/files/initd_watchcat b/utils/watchcat/files/initd_watchcat
new file mode 100644 (file)
index 0000000..4d2f6d4
--- /dev/null
+++ b/utils/watchcat/files/initd_watchcat
@@ -0,0 +1,139 @@
+#!/bin/sh /etc/rc.common
+
+START=01
+
+PIDFILE="/tmp/run/watchcat"
+
+append_string() {
+       local varname="$1"; local actual="${!varname}"; local add="$2"; local separator="${3:- }"
+       new="${actual:+$actual$separator}$add"
+       eval "$varname=\$new"
+}
+
+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="$4"
+       
+       time=$(cat /proc/uptime) && time=${time%%.*}
+       last=$time
+
+       while true
+       do
+               sleep $pingperiod
+       
+               time=$(cat /proc/uptime) && time=${time%%.*}
+               
+               for host in "$pinghosts" 
+               do
+                       if ping -c 1 "$host" &> /dev/null 
+                       then 
+                               last=$time
+                       else
+                               diff=$((time-last))
+                               logger -p daemon.info -t "watchcat[$$]" "no internet connectivity for $diff seconds. Reseting when reaching $period"    
+                       fi
+               done
+
+               diff=$((time-last))
+               [ $diff -ge $period ] && shutdown_now "$forcedelay"
+       
+       done
+} 
+
+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   "600"
+       config_get forcedelay   $1 forcedelay   "0"
+
+       error=""
+
+       timetoseconds "$period"
+       period="$seconds"
+        [ "$period" -ge 1 ] \
+               || append_string "error" "period is not set or not recognized" "; "
+        [ "$mode" = "allways" -o "$mode" = "ping" ] \
+               || append_string "error" "mode must be 'allways' or 'ping'" "; "
+        [ -n "$pinghosts" -o "$mode" = "allways" ] \
+               || append_string "error" "pinghosts must be set in 'ping' mode" "; "
+       timetoseconds "$pingperiod"
+       pingperiod="$seconds"
+       [ "$pingperiod" -l "$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
+               watchcat_allways "$period" "$forcedelay" &
+       else
+               watchcat_ping "$period" "$forcedelay" "$pinghosts" "$pingperiod" &
+       fi
+
+       echo $! >> "$PIDFILE".pids
+       
+       logger -p user.info -t "sshtunnel" "started tunnels to $server (pid=$!;retrydelay=$retrydelay)" 
+}
+
+stop() {
+        if [ -f "$PIDFILE".pids ]
+        then
+                logger -p user.info -t "watchcat" "stopping all reboot programs"
+                
+                while read pid
+                do
+                       kill $pid
+               done < "$PIDFILE".pids
+
+               rm "$PIDFILE".pids
+
+                logger -p user.info -t "watchcat" "all reboot programs stopped"
+        else
+                logger -p user.info -t "watchcat" "no reboot programs running"
+        fi
+}
+
+start() {
+       [ -f "$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 reboot programs"
+               config_foreach load_watchcat watchcat
+               logger -p user.info -t "watchcat" "all reboot programs started" 
+       else
+               logger -p user.info -t "watchcat" "no reboot programs defined"
+       fi
+}

diff --git a/utils/watchcat/files/uci_defaults_watchcat b/utils/watchcat/files/uci_defaults_watchcat
new file mode 100644 (file)
index 0000000..5b01e69
--- /dev/null
+++ b/utils/watchcat/files/uci_defaults_watchcat
@@ -0,0 +1,7 @@
+#!/bin/sh
+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