hostapd: Gateway blueprint WiFi AP configuration

Basic WiFi AP configuration for nl80211 driver with WPA-PSK to avoid
opening up your networking accidentally to everyone.

The appended systemd service file fixes an issue with the upstream one
on the command-line argument ordering. The conf file has to be last or
the service does not start for me.

Fixes: https://git.ostc-eu.org/OSTC/planning/core-os/-/issues/83



Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>

meta-ohos-blueprints/recipes-connectivity/hostapd/files/hostapd.conf

+# The Wi-Fi interface configured for static IPv4 addresses
+# FIXME: the interface name used here is working in our current
+# hardware setup for the blueprint, but we need to ensure it will work
+# in all cases. Either by link renaming to ensure the correct
+# interface name or by passing the correct interface in the service
+# file to hostapd on the commandline.
+interface=wlan0
+
+# Use the 802.11 Netlink interface driver
+driver=nl80211
+
+# The user-defined name of the network
+ssid=All Scenarios OS WiFi
+
+# Use the 2.4GHz band
+hw_mode=g
+
+# Use channel 6
+channel=6
+
+# Enable 802.11n
+ieee80211n=1
+
+# Enable WMM
+wmm_enabled=1
+
+# Enable 40MHz channels with 20ns guard interval
+ht_capab=[HT40][SHORT-GI-20][DSSS_CCK-40]
+
+# Accept all MAC addresses
+macaddr_acl=0
+
+# Use WPA authentication
+auth_algs=1
+
+# Require clients to know the network name
+ignore_broadcast_ssid=0
+
+# Use WPA2
+wpa=2
+
+# Use a pre-shared key
+wpa_key_mgmt=WPA-PSK
+
+# The network passphrase
+wpa_passphrase=12345678
+
+# Use AES, instead of TKIP
+rsn_pairwise=CCMP

meta-ohos-blueprints/recipes-connectivity/hostapd/files/hostapd.service

+[Unit]
+Description=Hostapd IEEE 802.11 AP, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=@SBINDIR@/hostapd @SYSCONFDIR@/hostapd.conf
+
+[Install]
+WantedBy=multi-user.target

meta-ohos-blueprints/recipes-connectivity/hostapd/hostapd_%.bbappend

+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+
+SRC_URI_append = "file://hostapd.conf \
+                  file://hostapd.service \
+                 "
+
+do_install_append() {
+    install -m 0644 ${WORKDIR}/hostapd.conf ${D}${sysconfdir}
+}