openwrt/wifi: add minimal script for setting up a wifi+ssh accessible device

openwrt/openwrt-wifi-with-ssh.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+# 2025-10-30, Nico Schottelius
+# Configure a device with a WAN port to allow ssh access and be IPv6 client
+
+if [ $# -ne 2 ]; then
+    echo "$0 ip-address ssid wifi-psk"
+    echo "    ip-address: where to find the OpenWRT device"
+    echo "    hostname: which hostname to set"
+    echo "    ssid for the wifi"
+    echo "    psk for the wifi"
+    exit 1
+fi
+
+my_ip=$1; shift
+new_hostname=$1; shift
+ssid=$1; shift
+psk=$1; shift
+
+cat <<EOF | ssh -t "root@${my_ip}"
+set -x
+
+# Allow SSH in
+if ! uci show firewall | grep "name='Allow-SSH'"; then
+uci add firewall rule
+uci set firewall.@rule[-1].name='Allow-SSH-in'
+uci set firewall.@rule[-1].src='wan'
+uci set firewall.@rule[-1].proto='tcp'
+uci set firewall.@rule[-1].dest_port='22'
+uci set firewall.@rule[-1].target='ACCEPT'
+fi
+
+uci set system.@system[0].hostname="${new_hostname}"
+
+# Wifi configuration
+uci set wireless.radio0=wifi-device
+uci set wireless.radio0.htmode='HT40'
+uci set wireless.radio0.channel='6'
+
+uci set wireless.radio0.country='CH'
+uci set wireless.default_radio0.encryption='psk2'
+uci set wireless.default_radio0.key='${psk}'
+uci set wireless.default_radio0.ssid='${ssid}'
+
+uci set wireless.radio1.country='CH'
+uci set wireless.default_radio1.encryption='psk2'
+uci set wireless.default_radio1.key='${psk}'
+uci set wireless.default_radio1.ssid='${ssid}'
+
+# Ensure it is not disabled
+uci delete wireless.radio0.disabled
+uci delete wireless.radio1.disabled
+
+uci commit
+
+EOF