| 1 | #!/bin/sh
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| 2 | #
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| 3 | # Internet Connection Wrapper From Cron
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| 4 | #
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| 5 | # a) Disable lvrouted if the internet is down.
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| 6 | # b) Re-enable lvrouted if the internet is back up.
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| 7 | #
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| 8 | # XXX: Do we need build an fail-save for flapping states?
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| 9 | # XXX: Do we need to manage state, like DHCP here?
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| 10 | # XXX: Check if page output is actually the output expected and not some weird captive portal somewhere.
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| 11 | # XXX: For effiently reasons this should be combined with the nagios check_inet check
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| 12 | #
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| 13 | # Rick van der Zwet <rick@wirelessleiden.nl>
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| 14 | #
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| 15 |
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| 16 | TAG=`basename $0`
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| 17 | logit() {
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| 18 | logger -t "$TAG" $*
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| 19 | }
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| 20 |
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| 21 | # Check if we need to check inet at all
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| 22 | . /etc/rc.subr
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| 23 |
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| 24 | load_rc_config "lvrouted"
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| 25 | load_rc_config "tinyproxy"
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| 26 |
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| 27 | : ${lvouted_enable="NO"}
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| 28 | : ${tinyproxy_enable="NO"}
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| 29 | : ${service_ileiden="NO"}
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| 30 | : ${service_proxy="NO"}
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| 31 |
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| 32 | control_lvrouted=false
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| 33 | control_tinyproxy=false
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| 34 | checkyesno service_proxy_ileiden && checkyesno lvouted_enable control_lvrouted=true
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| 35 | checkyesno service_proxy_normal && checkyesno tinyproxy_enable || control_tinyproxy=false
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| 36 |
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| 37 |
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| 38 | # Get current state of the daemons
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| 39 | lvouted_status="stopped"
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| 40 | tinyproxy_status="stopped"
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| 41 | service lvrouted onestatus > /dev/null && lvouted_status="running"
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| 42 | service tinyproxy onestatus > /dev/null && tinyproxy_status="running"
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| 43 |
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| 44 | check_http() {
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| 45 | fetch -o /dev/null -q $* 2>/dev/null
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| 46 | }
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| 47 |
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| 48 | # Get connection stats for internet direct and via proxy
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| 49 | inet_status=up
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| 50 | proxy_status=up
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| 51 | check_http http://proxy-test.wirelessleiden.nl || check_http http://ams-ix.net || inet_status=down
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| 52 | export HTTP_PROXY=${HTTP_PROXY-:http://proxy.wleiden.net:3128}
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| 53 | check_http http://tinyproxy.stats || check_http http://ams-ix.net || proxy_status=down
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| 54 |
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| 55 | # Log Network Status
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| 56 | cat <<EOF > /tmp/network.status
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| 57 | internet=$inet_status
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| 58 | proxy=$proxy_status
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| 59 | EOF
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| 60 |
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| 61 | # Control connections
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| 62 | if $control_lvrouted; then
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| 63 | if [ $lvrouted_status = "stopped" ] && [ $inet_status = "up" ]; then
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| 64 | service lvrouted start | logit
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| 65 | elif [ $lvrouted_status = "running" ] && [ $inet_status = "down" ]; then
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| 66 | service lvrouted stop | logit
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| 67 | fi
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| 68 | fi
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| 69 |
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| 70 | if $control_tinyproxy; then
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| 71 | if [ $tinyproxy_status = "stopped" ] && [ $inet_status = "up" ]; then
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| 72 | service tinyproxy start | logit
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| 73 | elif [ $tinyproxy_status = "running" ] && [ $inet_status = "down" ]; then
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| 74 | service tinyproxy stop | logit
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| 75 | fi
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| 76 | fi
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