scripts

commit 7e520eb42b63614759a22612cd3ac57e9538e1d9
parent 30e2d7e5553bcf4c1b0e1d7aeca418735551c7f6
Author: clamiax <smoppy@gmail.com>
Date:   Sun, 26 Oct 2014 19:39:35 +0100

Add the iwpick script

Diffstat:
A
iwpick
 | 
90
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 90 insertions(+), 0 deletions(-)
diff --git a/iwpick b/iwpick
@@ -0,0 +1,90 @@
+#!/bin/bash
+# Connects to a network
+# Requires: wpa_supplicant, dhclient, iwconfig
+
+connect() {
+	iface=$1
+	essid=$2
+	key=$3
+
+	echo "Connecting to ${essid}..."
+
+	ifconfig $iface up
+	iwconfig $iface essid $essid
+
+	if [ -n "$key" ]; then
+		tmp=$(mktemp)
+		echo "network={
+			ssid=\"$essid\"
+			psk=\"$key\"
+			key_mgmt=WPA-EAP WPA-PSK
+			proto=RSN WPA
+			pairwise=CCMP TKIP
+		}" >> $tmp
+		wpa_supplicant -Dwext -i $iface -c "$tmp" -dd -B 2>&1 > /dev/null
+		rm $tmp
+	fi
+
+	dhclient $iface
+}
+
+die() {
+	echo "$0: $@"
+	exit 1
+}
+
+usage() {
+echo -n "Usage: $0 [-hg] [-i <iface>] [-e <essid>] [-k <psk>] [-a <alias>]
+-i <iface>	Network interface
+-a <alias>	Use the specified alias to connect
+-e <essid>	ESSID of the network to connect
+-k <key>	Key of the network to connect
+-f <file>	Networks file
+-h		Show this helps
+"
+exit 1
+}
+
+main() {
+	iface=wlan0
+	file=~/.networks
+	alias=
+	essid=
+	key=
+
+	while getopts "ina:e:k:f:h" o; do
+		case $o in
+			i) iface=$OPTARG;;
+			a) alias=$OPTARG;;
+			e) essid=$OPTARG;;
+			k) key=$OPTARG;;
+			f) file=$OPTARG;;
+			h) usage;;
+		esac
+	done
+
+	[ "$(id -u)" -ne 0 ] && die "You must be root"
+	[ -z "$alias" -a -z "$essid" ] && usage
+
+	if [ -n "$alias" ]; then
+		s="$(sed -n /^${alias}:/p $file |cut -d: -f2-3)"
+		essid="$(echo $s |cut -d: -f1)"
+		key="$(echo $s |cut -sd: -f2)"
+	else
+		# If explicitly specified, check if the ESSID do exists
+		valid="$(iwlist wlan0 scan |grep ESSID |grep -wc $essid)"
+		[ $valid -eq 0 ] && die "essid '$essid' is not valid"
+	fi
+
+	[ -z "$essid" ] && die "alias '${alias}' not found"
+
+	apps=(wpa_supplicant dhclient)
+	for a in ${apps[@]}
+	do
+		pkill -f "$a"
+	done
+
+	connect "$iface" "$essid" "$key"
+}
+
+main "$@"