152 lines
3.0 KiB
Bash
152 lines
3.0 KiB
Bash
#!/bin/bash -e
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DISABLE=false
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SSID=
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PASS=
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REBOOT=false
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WLAN0_CFG=/etc/network/interfaces.d/wlan0
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DHCPCD_CFG=/etc/dhcpcd.conf
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WPA_CFG=/etc/wpa_supplicant/wpa_supplicant.conf
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function query_config() {
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SSID=$(grep wpa-ssid $WLAN0_CFG |
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sed 's/^[[:space:]]*wpa-ssid "\([^"]*\)"/\1/')
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echo "{\"ssid\": \"$SSID\"}"
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}
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function disable_wifi() {
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rm -f $WLAN0_CFG
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}
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function configure_wlan0() {
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echo "auto wlan0"
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echo "allow-hotplug wlan0"
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echo "iface wlan0 inet dhcp"
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echo " wpa-scan-ssid 1"
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echo " wpa-ap-scan 1"
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echo " wpa-key-mgmt WPA-PSK"
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echo " wpa-proto RSN WPA"
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echo " wpa-pairwise CCMP TKIP"
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echo " wpa-group CCMP TKIP"
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echo " wpa-ssid \"$SSID\""
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if [ ${#PASS} -ne 0 ]; then
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echo " wpa-psk \"$PASS\""
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fi
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}
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function configure_wpa() {
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echo "country=US"
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echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev"
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echo "update_config=1"
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if [ ${#PASS} -eq 0 ]; then
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echo "network={"
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echo " ssid=\"$SSID\""
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echo " key_mgmt=NONE"
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echo "}"
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fi
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}
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function configure_dhcpcd() {
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echo "hostname"
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echo "clientid"
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echo "persistent"
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echo "option rapid_commit"
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echo "option domain_name_servers, domain_name, domain_search, host_name"
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echo "option classless_static_routes"
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echo "option ntp_servers"
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echo "option interface_mtu"
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echo "require dhcp_server_identifier"
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echo "slaac private"
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}
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function configure_wifi() {
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disable_wifi
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echo "source-directory /etc/network/interfaces.d" > /etc/network/interfaces
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configure_wlan0 > $WLAN0_CFG
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configure_wpa > $WPA_CFG
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configure_dhcpcd > $DHCPCD_CFG
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}
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function usage() {
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echo "Usage: config-wifi [OPTIONS]"
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echo
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echo "Configure wifi as either a client or access point."
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echo
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echo "OPTIONS:"
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echo
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echo " -d Disable wifi."
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echo " -r Reboot when done."
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echo " -s <SSID> Set SSID."
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echo " -p <PASS> Set password."
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echo " -j Report wifi config as JSON data."
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echo
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}
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# Parse args
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while [ $# -ne 0 ]; do
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case "$1" in
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-d) DISABLE=true ;;
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-r) REBOOT=true; ;;
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-s) SSID="$2"; shift ;;
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-p) PASS="$2"; shift ;;
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-j) query_config; exit 0 ;;
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-h)
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usage
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exit 0
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;;
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*)
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usage
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echo "Unknown argument '$1'"
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exit 1
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esac
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shift
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done
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if $DISABLE; then
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disable_wifi
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else
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# Check args
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function clean_str() {
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echo "$1" | tr -d '\n\r"'
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}
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SSID=$(clean_str "$SSID")
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PASS=$(clean_str "$PASS")
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LANG=C LC_ALL=C # For correct string byte length
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if [ ${#SSID} -eq 0 -o 32 -lt ${#SSID} ]; then
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echo "Invalid or missing SSID '$SSID'"
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exit 1
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fi
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if [ ${#PASS} -ne 0 ]; then
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if [ ${#PASS} -lt 8 -o 128 -lt ${#PASS} ]; then
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echo "Invalid passsword"
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exit 1
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fi
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fi
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# Execute
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echo "Configuring Wifi"
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configure_wifi
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fi
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if $REBOOT; then nohup reboot & fi
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