application code

easy-wifi-switch

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+#!/bin/sh
+
+# check config exist
+wificfg="/mnt/sda1/trophy/wifi.cfg"
+
+if [ -f "$wificfg" ]
+then
+	# load wifi config
+	source "$wificfg"
+
+	echo "Updating wifi settings:"
+	echo " - SSID: $ssid"
+	echo " - Key: $key"
+	echo " - Encryption: $encryption"
+	echo " "
+
+	# apply to OpenWrt UCI
+	# see: http://wiki.openwrt.org/doc/uci/wireless
+	/sbin/uci "set" "wireless.@wifi-iface[0].ssid=$ssid"
+	/sbin/uci "set" "wireless.@wifi-iface[0].key=$key"
+	/sbin/uci "set" "wireless.@wifi-iface[0].encryption=$encryption"
+	/sbin/uci commit wireless
+	wifi
+else
+	echo "$wificfg was not found. Leaving wifi alone."
+fi

wifi.cfg

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+# Enter your WiFi network information here.
+
+# Make sure each value comes between the double quotes, and that
+# there are no spaces on either side of the equals sign.
+
+# Your WiFi network name. This is case-sensitive.
+ssid="My Network Name"
+
+# Your WiFi network password. This is case-sensitive.
+key="password123"
+
+# Your WiFi network encryption method. Assuming you have this set
+# up at home, it is very unlikely you'll have to change this.
+# Possible options are:
+#   psk  - wpa personal
+#   psk2 - wpa2 personal
+#   wpa  - wpa enterprise
+#   wpa2 - wpa2 enterprise
+#   none - unencrypted network
+encryption="psk2"