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hostapd: generate unique SSID for SoftAP 

If two or more targets are in the same environment, all of them will
broadcast the same SSID, which may be a problem when a client wants
to connect to a specific device.

Use the last bytes of the non-virtual wireless MAC for the name of the
SSID, a random value with no hexadecimal characters is used if the MAC
is not available.
Also drop 'wpa2aes' from the SSID.

https://jira.digi.com/browse/DEL-4129

Signed-off-by: Jose Diaz de Grenu <Jose.DiazdeGrenu@digi.com>
This commit is contained in:
Jose Diaz de Grenu 2017-09-01 11:36:13 +02:00
parent 1daf4d91d4
commit 7ef80dd7ad
3 changed files with 27 additions and 2 deletions
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2
meta-digi-dey/recipes-connectivity/hostapd/hostapd/ccimx6ul/hostapd_wlan1.conf
View File

@ -4,7 +4,7 @@ interface=wlan1
driver=nl80211
# WPA2-AES encryption
ssid=ap-wlan1-wpa2aes_a
ssid=ap-wlan1-##MAC##
auth_algs=1
wpa=2
wpa_key_mgmt=WPA-PSK

2
meta-digi-dey/recipes-connectivity/hostapd/hostapd/hostapd_wlan0.conf
View File

@ -4,7 +4,7 @@ interface=wlan0
driver=nl80211
# WPA2-AES encryption
ssid=ap-wlan0-wpa2aes_a
ssid=ap-wlan0-##MAC##
auth_algs=1
wpa=2
wpa_key_mgmt=WPA-PSK

25
meta-digi-dey/recipes-connectivity/hostapd/hostapd_%.bbappend
View File

@ -17,5 +17,30 @@ do_install_append_ccimx6ul() {
install -m 0644 ${WORKDIR}/hostapd_wlan1.conf ${D}${sysconfdir}
}
pkg_postinst_${PN}() {
# Append the last two bytes of the wlan0 MAC address to the SSID of the
# hostAP configuration files
# (execute on first boot)
if [ -n "$D" ]; then
exit 1
fi
# Get the last two bytes of the wlan0 MAC address
MAC="$(cut -d ':' -f5,6 /sys/class/net/wlan0/address | tr -d ':')"
# If wlan0 is not available, use a random value with no hexadecimal characters
if [ -z "${MAC}" ]; then
MAC="$(cat /dev/urandom | tr -dc 'G-Z' | fold -w 4 | head -n 1)"
fi
find "${sysconfdir}" -type f -name 'hostapd_wlan?.conf' -exec \
sed -i -e "s,##MAC##,${MAC},g" {} \;
# Create the symlinks in the different runlevels
if type update-rc.d >/dev/null 2>/dev/null; then
update-rc.d ${INITSCRIPT_NAME} ${INITSCRIPT_PARAMS}
fi
}
# Do not autostart hostapd daemon, it will conflict with wpa-supplicant.
INITSCRIPT_PARAMS = "remove"