diff options
| -rw-r--r-- | Makefile | 1 | ||||
| -rwxr-xr-x | scripts/wifi-menu | 260 |
2 files changed, 261 insertions, 0 deletions
@@ -31,6 +31,7 @@ install: scripts/netcfg-menu \ scripts/netcfg-wpa_actiond \ scripts/netcfg-wpa_actiond-action \ + scripts/wifi-menu \ $(DESTDIR)/usr/bin install -Dm755 scripts/ifplugd.action $(DESTDIR)/etc/ifplugd/netcfg.action # Daemons diff --git a/scripts/wifi-menu b/scripts/wifi-menu new file mode 100755 index 0000000..fc21a9b --- /dev/null +++ b/scripts/wifi-menu @@ -0,0 +1,260 @@ +#! /bin/bash + +. /usr/lib/network/network +. $SUBR_DIR/8021x +. /etc/conf.d/netcfg + +# The right value depends on the connected profile. +WPA_CTRL_PATH=/run/wpa_supplicant + +usage() +{ + cat << END +Usage: wifi-menu [-o | --obscure] [-h | --help] [interface] + +Interactively connect to a wireless network. + +Arguments: + -o, --obscure Show asterisks for the characters of the password + and store the password as a hexadecimal string. + -h, --help Show this help. + interface The wireless interface to use. + (default: WIRELESS_INTERFACE from /etc/conf.d/netcfg) + +For choosing from all available profiles, use netcfg-menu. +END +} + +# Fills PROFILES and ESSIDS with the profile names and essids of the profiles +# for interface $1. +init_profiles() +{ + local i=0 essid profile + for profile in $(list_profiles); do + essid=$( + unset INTERFACE ESSID + . "$PROFILE_DIR/$profile" &> /dev/null + if [[ "$INTERFACE" = "$1" && -n "$ESSID" ]]; then + printf "%s" "$ESSID" + if [[ "$DESCRIPTION" =~ "Automatically generated" ]]; then + return 2 + else + return 1 + fi + fi + return 0 + ) + case $? in + 2) + GENERATED[${#GENERATED[@]}]="$profile" + ;& + 1) + PROFILES[$i]="$profile" + ESSIDS[$i]="$essid" + let i++ + ;; + esac + done +} + +# Builds ENTRIES as an argument list for dialog based on scan results in $1. +init_entries() +{ + local i=0 flags security signal ssid + while IFS=$'\t' read signal flags ssid; do + ENTRIES[$i]="--" # $ssid might look like an option to dialog. + let i++ + ENTRIES[$i]="$ssid" + let i++ + if inarray "$ssid" "${ESSIDS[@]}"; then + if inarray "$(ssid_to_profile "$ssid")" "${GENERATED[@]}"; then + ENTRIES[$i]="+" # Automatically generated + else + ENTRIES[$i]="*" # Handmade + fi + else + ENTRIES[$i]="-" # Not present + fi + if [[ "$ssid" = "$CONNECTION" ]]; then + ENTRIES[$i]="!" # Currently connected + fi + security="$(expr match "$flags" ".*\(WPA2\|WPA\|WEP\)")" + : ${security:="NONE"} + ENTRIES[$i]+=":${security,,}" + ENTRIES[$i]+=" :$signal" + let i++ + done < "$1" +} + +# Finds a profile name for ssid $1. +ssid_to_profile() +{ + local i + for i in $(seq 0 $((${#ESSIDS[@]}-1))); do + if [[ "$1" = "${ESSIDS[$i]}" ]]; then + printf "%s" "${PROFILES[$i]}" + return 0 + fi + done + return 1 +} + +# Creates a profile for ssid $1. +create_profile() +{ + local flags key msg security + PROFILE="$INTERFACE-$1" + [[ -f "$PROFILE_DIR/$PROFILE" ]] && PROFILE+=".wifi-menu" + flags="$(grep -m 1 $'\t'"$1\$" "$NETWORKS" | cut -f 2)" + security="$(expr match "$flags" ".*\(WPA\|WEP\)")" + : ${security:="NONE"} + if [[ "$flags" =~ "PSK"|"WEP" ]]; then + msg="Enter $security security key for\n'$1'" + if [[ "$OBSCURE" ]]; then + key=$(wpa_passphrase "$1" "$(dialog --insecure --passwordbox \ + "$msg" 10 40 --stdout)" \ + | grep "^[[:space:]]*psk=") + RETURN=$? + key="KEY=${key#*psk=}" + else + key="KEY='$(dialog --inputbox "$msg" 10 40 --stdout)'" + RETURN=$? + fi + [[ $RETURN -eq 0 ]] || return $RETURN + fi + cat << EOF > "$PROFILE_DIR/$PROFILE" || return 4 +CONNECTION='wireless' +DESCRIPTION='Automatically generated profile by wifi-menu' +INTERFACE='$INTERFACE' +SECURITY='${security,,}' +ESSID='$1' +IP='dhcp' +$key +EOF + printf "%s" "$PROFILE" + return 0 +} + +# Connects to ssid $1 using an available profile or an automatically created +# one if none exists. +connect_to_ssid() +{ + local msg + PROFILE=$(ssid_to_profile "$1") + if [[ $? -eq 0 ]]; then + clear + check_profile "$PROFILE" && profile_down "$PROFILE" + else + PROFILE=$(create_profile "$1") + RETURN=$? + [[ $RETURN -eq 0 ]] || return $RETURN + SPAWNED_PROFILE=1 + clear + fi + if ! profile_up "$PROFILE"; then + if [[ "$SPAWNED_PROFILE" ]]; then + msg=" CONNECTING FAILED + +Do you want to keep the generated profile ('$PROFILE')?" + dialog --yesno "$msg" 10 40 --stdout || rm "$PROFILE_DIR/$PROFILE" + clear + fi + return 2 + fi + return 0 +} + +while [[ "$1" = -* ]]; do + case "$1" in + -h|--help) + usage + exit + ;; + -o|--obscure) + OBSCURE=1 + shift + ;; + -*) + report_err "Invalid option: $1" + usage + exit 255 + ;; + esac +done +if [[ $# -gt 1 ]]; then + report_err "Too many arguments" + usage + exit 255 +fi + +if [[ $(id -u) -ne 0 ]]; then + exit_stderr "This script needs to be run with root privileges" +fi + +INTERFACE="${1-$WIRELESS_INTERFACE}" +if [[ -z "$INTERFACE" ]]; then + report_err "Missing interface specification" + usage + exit 255 +fi + +cd / # We do not want to spawn anything that can block unmounting +is_interface "$INTERFACE" || exit_fail "No such interface: $INTERFACE" +if [[ -z "$(ip link show up dev $INTERFACE)" ]]; then + [[ -f "$IFACE_DIR/$INTERFACE" ]] && . "$IFACE_DIR/$INTERFACE" + bring_interface up "$INTERFACE" || exit_fail "Interface unavailable" + SPAWNED_INTERFACE=1 +fi + +report_try "Scanning for networks" +CONNECTION=$(expr substr \ + "$(wpa_cli -p "$WPA_CTRL_PATH" -i "$INTERFACE" status \ + 2> /dev/null | grep "^ssid=")" 6 32) +init_profiles "$INTERFACE" +NETWORKS=$(wpa_supplicant_scan_info "$INTERFACE" 3,4,5) +[[ $? -eq 0 ]] && init_entries "$NETWORKS" +if [[ ${#ENTRIES[@]} -eq 0 ]]; then + report_fail + RETURN=3 +else + report_success + MSG="Select the network you wish to use +Flags description: + * - handmade profile present + + - automatically generated profile present + - - no profile present + ! - active connection present" + CHOICE=$(dialog --column-separator : --menu "$MSG" 24 50 12 \ + "${ENTRIES[@]}" --stdout) + RETURN=$? + if [[ $RETURN -eq 0 ]]; then + connect_to_ssid "$CHOICE" + RETURN=$? + fi +fi +case $RETURN in + 0|2) # Connected | Connecting failed + ;; + 1) # Canceled + clear + ;; + 3) # No networks found + report_err "No networks found" + ;; + 4) # Unable to create profile + clear + report_err "Could not create a profile for '$CHOICE'" + ;; + 255) # ESC or error + clear + report_err "Aborted" + ;; + *) # Should not happen + clear + report_err "Unexpected return code from dialog: $RETURN" + RETURN=7 + ;; +esac +[[ -f "$NETWORKS" ]] && rm -f "$NETWORKS" +[[ $RETURN -ne 0 && "$SPAWNED_INTERFACE" ]] && bring_interface down "$INTERFACE" +exit $RETURN |