summaryrefslogtreecommitdiff
path: root/package/hostapd/files/hostapd.sh
blob: c83c06df8654da399b2a117f4946ff38c337e7dd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
hostapd_set_bss_options() {
	local var="$1"
	local vif="$2"
	local enc wpa_group_rekey

	config_get enc "$vif" encryption
	config_get wpa_group_rekey "$vif" wpa_group_rekey

	# Examples:
	# psk-mixed/tkip 	=> WPA1+2 PSK, TKIP
	# wpa-psk2/tkip+aes	=> WPA2 PSK, CCMP+TKIP
	# wpa2/tkip+aes 	=> WPA2 RADIUS, CCMP+TKIP
	# ...

	# TODO: move this parsing function somewhere generic, so that
	# later it can be reused by drivers that don't use hostapd

	# crypto defaults: WPA2 vs WPA1
	case "$enc" in
		wpa2*|*psk2*)
			wpa=2
			crypto="CCMP"
		;;
		*mixed*)
			wpa=3
			crypto="CCMP TKIP"
		;;
		*)
			wpa=1
			crypto="TKIP"
		;;
	esac

	# explicit override for crypto setting
	case "$enc" in
		*tkip+aes|*tkip+ccmp) crypto="CCMP TKIP";;
		*aes|*ccmp) crypto="CCMP";;
		*tkip) crypto="TKIP";;
	esac

	# use crypto/auth settings for building the hostapd config
	case "$enc" in
		*psk*)
			config_get psk "$vif" key
			if [ ${#psk} -eq 64 ]; then
				append "$var" "wpa_psk=$psk" "$N"
			else
				append "$var" "wpa_passphrase=$psk" "$N"
			fi
		;;
		*wpa*)
			# required fields? formats?
			# hostapd is particular, maybe a default configuration for failures
			config_get server "$vif" server
			append "$var" "auth_server_addr=$server" "$N"
			config_get port "$vif" port
			port=${port:-1812}
			append "$var" "auth_server_port=$port" "$N"
			config_get secret "$vif" key
			append "$var" "auth_server_shared_secret=$secret" "$N"
			config_get nasid "$vif" nasid
			append "$var" "nas_identifier=$nasid" "$N"
			append "$var" "eapol_key_index_workaround=1" "$N"
			append "$var" "radius_acct_interim_interval=300" "$N"
			append "$var" "ieee8021x=1" "$N"
			append "$var" "auth_algs=1" "$N"
			append "$var" "wpa_key_mgmt=WPA-EAP" "$N"
			append "$var" "wpa_group_rekey=300" "$N"
			append "$var" "wpa_gmk_rekey=640" "$N"
		;;
		*wep*)
			config_get key "$vif" key
			key="${key:-1}"
			case "$key" in
				[1234])
					for idx in 1 2 3 4; do
						local zidx
						zidx=$(($idx - 1))
						config_get ckey "$vif" "key${idx}"
						[ -n "$ckey" ] && \
							append "$var" "wep_key${zidx}=$(prepare_key_wep "$ckey")" "$N"
					done
					append "$var" "wep_default_key=$((key - 1))"  "$N"
				;;
				*)
					append "$var" "wep_key0=$(prepare_key_wep "$key")" "$N"
					append "$var" "wep_default_key=0" "$N"
				;;
			esac
			wpa=0
			crypto=
		;;
		*)
			wpa=0
			crypto=
		;;
	esac
	append "$var" "wpa=$wpa" "$N"
	[ -n "$crypto" ] && append "$var" "wpa_pairwise=$crypto" "$N"
	[ -n "$wpa_group_rekey" ] && append "$var" "wpa_group_rekey=$wpa_group_rekey" "$N"

	config_get ssid "$vif" ssid
	config_get bridge "$vif" bridge
	config_get ieee80211d "$vif" ieee80211d

	append "$var" "ssid=$ssid" "$N"
	[ -n "$bridge" ] && append "$var" "bridge=$bridge" "$N"
	[ -n "$ieee80211d" ] && append "$var" "ieee80211d=$ieee80211d" "$N"
}

hostapd_setup_vif() {
	local vif="$1"
	local driver="$2"
	hostapd_cfg=

	hostapd_set_bss_options hostapd_cfg "$vif"
	config_get ifname "$vif" ifname
	config_get device "$vif" device
	config_get channel "$device" channel
	config_get hwmode "$device" hwmode
	case "$hwmode" in
		*bg) hwmode=g;;
	esac
	[ "$channel" = auto ] && channel=
	[ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
	cat > /var/run/hostapd-$ifname.conf <<EOF
ctrl_interface=/var/run/hostapd-$ifname
driver=$driver
interface=$ifname
${hwmode:+hw_mode=${hwmode#11}}
${channel:+channel=$channel}
$hostapd_cfg
EOF
	hostapd -P /var/run/wifi-$ifname.pid -B /var/run/hostapd-$ifname.conf
}