applications/create_ap
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Detect if the adapter can be an AP and AP+STA

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Fix #9
This commit is contained in:
oblique 2014-09-02 23:05:46 +03:00
parent 718ea69e46
commit 0ba638f780
1 changed files with 42 additions and 8 deletions
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50
create_ap
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@ -112,6 +112,21 @@ get_adapter_info() {
iw phy $PHY info
}
can_have_sta_and_ap() {
# iwconfig does not provide this information, assume false
[[ $USE_IWCONFIG -eq 1 ]] && return 1
get_adapter_info "$1" | grep -E '{.* managed.* AP.*}' > /dev/null 2>&1 && return 0
get_adapter_info "$1" | grep -E '{.* AP.* managed.*}' > /dev/null 2>&1 && return 0
return 1
}
can_have_ap() {
# iwconfig does not provide this information, assume true
[[ $USE_IWCONFIG -eq 1 ]] && return 0
get_adapter_info "$1" | grep -E '\* AP$' > /dev/null 2>&1 && return 0
return 1
}
can_transmit_to_channel() {
IFACE=$1
CHANNEL=$2
@ -130,6 +145,15 @@ can_transmit_to_channel() {
fi
}
is_wifi_connected() {
if [[ $USE_IWCONFIG -eq 0 ]]; then
iw dev "$1" link 2>&1 | grep -E '^Connected to' > /dev/null 2>&1 && return 0
else
iwconfig "$1" 2>&1 | grep -E 'Access Point: [0-9a-fA-F]{2}:' > /dev/null 2>&1 && return 0
fi
return 1
}
get_macaddr() {
ip link show "$1" | grep ether | grep -Eo '([0-9a-f]{2}:){5}[0-9a-f]{2}[[:space:]]' | tr -d '[[:space:]]'
}
@ -445,12 +469,18 @@ if ! is_wifi_interface ${WIFI_IFACE}; then
exit 1
fi
if [[ $NO_VIRT -eq 0 && $USE_IWCONFIG -eq 1 ]]; then
NO_VIRT=1
if which iw > /dev/null 2>&1; then
echo "'iw' can not recognize your adapter, virtual interface can not be created" >&2
else
echo "'iw' is not installed, virtual interface can not be created" >&2
if ! can_have_ap ${WIFI_IFACE}; then
echo "ERROR: Your adapter does not support AP (master) mode" >&2
exit 1
fi
if ! can_have_sta_and_ap ${WIFI_IFACE}; then
if is_wifi_connected ${WIFI_IFACE}; then
echo "ERROR: Your adapter can not be connected to an AP and at the same time transmit as an AP" >&2
exit 1
elif [[ $NO_VIRT -eq 0 ]]; then
echo "WARN: Your adapter does not fully support AP virtual interface, enabling --no-virt" >&2
NO_VIRT=1
fi
fi
@ -522,6 +552,12 @@ else
fi
fi
if [[ $NO_VIRT -eq 1 && "$WIFI_IFACE" == "$INTERNET_IFACE" ]]; then
echo -n "ERROR: You can not share your connection from the same" >&2
echo " interface if you are using --no-virt option." >&2
exit 1
fi
CONFDIR=$(mktemp -d /tmp/create_ap.${WIFI_IFACE}.conf.XXXXXXXX)
echo "Config dir: $CONFDIR"
@ -560,8 +596,6 @@ if [[ $NO_VIRT -eq 0 ]]; then
OLD_MACADDR=$(get_macaddr ${VWIFI_IFACE})
[[ ${OLD_MACADDR} == $(get_macaddr ${WIFI_IFACE}) ]] && NEW_MACADDR=$(get_new_macaddr ${VWIFI_IFACE})
WIFI_IFACE=${VWIFI_IFACE}
else
[[ "$WIFI_IFACE" == "$INTERNET_IFACE" ]] && die "You can not share your connection from the same interface if you are using --no-virt option."
fi
can_transmit_to_channel ${WIFI_IFACE} ${CHANNEL} || die "Your adapter can not transmit to channel ${CHANNEL}."