115 lines
2.6 KiB
Bash
115 lines
2.6 KiB
Bash
#!/bin/sh
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. /lib/functions.sh
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log() {
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local msg="$1"
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logger -t airos-dfs-reset -s "$msg"
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}
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rexec() {
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local target="$1"
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local username="$2"
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local password="$3"
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local cmd="$4"
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raw=$(DROPBEAR_PASSWORD="$password" ssh -y $username@$target "$cmd")
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ssh_result=$?
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}
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reset_dfs() {
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local cmd="/usr/etc/rc.d/rc.softrestart force"
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rexec $* "$cmd"
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}
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get_running_freq() {
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local cmd="iwconfig ath0 | grep Frequency | awk -F ':' '{print \$3}' | awk '{print \$1}' | sed 's/\.//'"
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rexec $* "$cmd"
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# Append zeroes which are then cut to 4, we have to convert GHz into MHz
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raw="$raw"000
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running_freq=${raw:0:4}
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}
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get_target_freq() {
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local cmd="grep 'radio.1.freq' /tmp/system.cfg | awk -F '=' '{ print \$2}'"
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rexec $* "$cmd"
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target_freq="$raw"
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}
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check_dfs() {
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local target="$1"
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local username="$2"
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local password="$3"
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get_running_freq $target $username $password
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if [ "$ssh_result" != 0 ]; then
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return
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fi
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get_target_freq $target $username $password
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if [ "$ssh_result" != 0 ]; then
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return
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fi
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log "Running freq: $running_freq - Target freq: $target_freq"
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[ "$running_freq" == "$target_freq" ]
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}
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reset_allowed() {
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local daytime_limit="$1"
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local start="$(echo $daytime_limit | awk -F '-' '{print $1'})"
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local end="$(echo $daytime_limit | awk -F '-' '{print $2'})"
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local cur="$(date +%H)"
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[ "$cur" -ge "$start" ] && [ "$cur" -le "$end" ]
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}
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handle_device() {
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local device="$1"
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config_get target "$device" target
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config_get username "$device" username
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config_get password "$device" password
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config_get daytime_limit "$device" daytime_limit "0-23"
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ssh_result=0
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log "Checking Device $device"
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check_dfs $target $username $password
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freqmatch=$?
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if [ "$ssh_result" != 0 ]; then
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log "ssh exited non-zero - connect timeout?"
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return
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elif [ "$freqmatch" == 0 ]; then
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log "Frequency is matching. No radar event fired"
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else
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log "Frequency doesnt match. Looks like DFS activity :("
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if reset_allowed $daytime_limit; then
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log "Initiating reset"
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reset_dfs $target $username $password
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log "Waiting $cfg_reset_sleep seconds after reset"
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sleep $cfg_reset_sleep
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else
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log "Resetting is forbidden at this daytime"
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fi
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fi
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}
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main() {
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log "started!"
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config_load airos-dfs-reset
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config_get cfg_interval general interval 600
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config_get cfg_reset_sleep general reset_sleep 120
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while :;
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do
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config_foreach handle_device device
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sleep $cfg_interval
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done
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}
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main
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