aboutsummaryrefslogtreecommitdiffstats
path: root/package/madwifi/files/lib/wifi/madwifi.sh
blob: 2fd839a283e894c39dadd6be6045365bb9d9112f (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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
#!/bin/sh
append DRIVERS "atheros"

scan_atheros() {
	local device="$1"
	local wds
	local adhoc sta ap
	
	config_get vifs "$device" vifs
	for vif in $vifs; do
	
		config_get ifname "$vif" ifname
		config_set "$vif" ifname "${ifname:-ath}"
		
		config_get mode "$vif" mode
		case "$mode" in
			adhoc|sta|ap)
				append $mode "$vif"
			;;
			wds)
				config_get addr "$vif" bssid
				config_get ssid "$vif" ssid
				[ -z "$addr" -a -n "$ssid" ] && {
					config_set "$vif" wds 1
					config_set "$vif" mode sta
					mode="sta"
					addr="$ssid"
				}
				${addr:+append $mode "$vif"}
			;;
			*) echo "$device($vif): Invalid mode, ignored."; continue;;
		esac
	done

	case "${adhoc:+1}:${sta:+1}:${ap+1}" in
		# valid mode combinations
		1::) wds="";;
		:1:1)config_set "$device" nosbeacon 1;; # AP+STA, can't use beacon timers for STA
		:1:);;
		::1);;
		::);;
		*) echo "$device: Invalid mode combination in config"; return 1;;
	esac

	config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${wds:+$wds }"
}


disable_atheros() (
	local device="$1"

	# kill all running hostapd and wpa_supplicant processes that
	# are running on atheros vifs 
	for pid in `pidof hostapd wpa_supplicant`; do
		grep ath /proc/$pid/cmdline >/dev/null && \
			kill $pid
	done
	
	include /lib/network
	cd /proc/sys/net
	for dev in *; do
		grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
			ifconfig "$dev" down 
			unbridge "$dev"
			wlanconfig "$dev" destroy
		}
	done
	return 0
)

enable_atheros() {
	config_get channel "$device" channel
	config_get vifs "$device" vifs
	
	disable_atheros "$device"
	local first=1
	for vif in $vifs; do
		nosbeacon=
		config_get ifname "$vif" ifname
		config_get enc "$vif" encryption
		config_get mode "$vif" mode
		
		[ "$mode" = sta ] && config_get nosbeacon "$device" nosbeacon
		
		config_get ifname "$vif" ifname
		ifname=$(wlanconfig "$ifname" create wlandev "$device" wlanmode "$mode" ${nosbeacon:+nosbeacon})
		[ $? -ne 0 ] && {
			echo "enable_atheros($device): Failed to set up $mode vif $ifname" >&2
			continue
		}
		config_set "$vif" ifname "$ifname"

		[ "$first" = 1 ] && {
			# only need to change freq band and channel on the first vif
			config_get agmode "$device" mode
			pureg=0
			case "$agmode" in
				*b) agmode=11b;;
				*bg) agmode=11g;;
				*g) agmode=11g; pureg=1;;
				*a) agmode=11a;;
				*) agmode=11g;;
			esac
			iwconfig "$ifname" channel 0 
			iwpriv "$ifname" mode "$agmode"
			iwpriv "$ifname" pureg "$pureg"
			iwconfig "$ifname" channel "$channel"
		}
	
		config_get_bool hidden "$vif" hidden
		iwpriv "$ifname" hide_ssid "$hidden"

		config_get wds "$vif" wds
		case "$wds" in
			1|on|enabled) wds=1;;
			*) wds=0;;
		esac
		iwpriv "$ifname" wds "$wds"

		wpa=
		case "$enc" in
			WEP|wep)
				for idx in 1 2 3 4; do
					config_get key "$vif" "key${idx}"
					iwconfig "$ifname" enc "[$idx]" "${key:-off}"
				done
				config_get key "$vif" key
				iwconfig "$ifname" enc "${key:-1}"
			;;
			PSK|psk|PSK2|psk2)
				config_get key "$vif" key
			;;
		esac

		case "$mode" in
			wds)
				config_get addr "$vif" bssid
				iwpriv "$ifname" wds_add "$addr"
			;;
			*)
				config_get ssid "$vif" ssid
			;;
			adhoc)
				config_get addr "$vif" bssid
				[ -z "$addr" ] || { 
					iwconfig "$ifname" ap "$addr"
				}
			;;
		esac

		[ "$mode" = "sta" ] && {
			config_get_bool bgscan "$vif" bgscan 1
			iwpriv "$ifname" bgscan "$bgscan"
		}

		config_get_bool antdiv "$device" diversity 1
		sysctl -w dev."$device".diversity="$antdiv" >&-

		config_get antrx "$device" rxantenna
		if [ -n "$antrx" ]; then
			sysctl -w dev."$device".rxantenna="$antrx" >&-
		fi

		config_get anttx "$device" txantenna
		if [ -n "$anttx" ]; then
			sysctl -w dev."$device".txantenna="$anttx" >&-
		fi

		config_get distance "$device" distance
		if [ -n "$distance" ]; then
			athctrl -i "$device" -d "$distance" >&-
		fi

		config_get txpwr "$vif" txpower
		if [ -n "$txpwr" ]; then
			iwconfig "$ifname" txpower "${txpwr%%.*}"
		fi

		ifconfig "$ifname" up

		local net_cfg bridge
		net_cfg="$(find_net_config "$vif")"
		[ -z "$net_cfg" ] || {
			bridge="$(bridge_interface "$net_cfg")"
			config_set "$vif" bridge "$bridge"
			start_net "$ifname" "$net_cfg"
		}
		iwconfig "$ifname" essid "$ssid"
		case "$mode" in
			ap)
				hostapd_setup_vif "$vif" madwifi || {
					echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
					# make sure this wifi interface won't accidentally stay open without encryption
					ifconfig "$ifname" down
					wlanconfig "$ifname" destroy
					continue
				}
			;;
			wds|sta)
				case "$enc" in 
					PSK|psk|PSK2|psk2)
						case "$enc" in
							PSK|psk)
								proto='proto=WPA';;
							PSK2|psk2)
								proto='proto=RSN';;
						esac
						cat > /var/run/wpa_supplicant-$ifname.conf <<EOF
ctrl_interface=/var/run/wpa_supplicant
network={
	scan_ssid=1
	ssid="$ssid"
	key_mgmt=WPA-PSK
	$proto
	psk="$key"
}
EOF
					;;
					WPA|wpa|WPA2|wpa2)
						#add wpa_supplicant calls here
					;;
				esac
				wpa_supplicant ${bridge:+ -b $bridge} -Bw -D wext -i "$ifname" -c /var/run/wpa_supplicant-$ifname.conf
			;;
		esac
		first=0
	done
}


detect_atheros() {
	cd /proc/sys/dev
	[ -d ath ] || return
	for dev in wifi*; do
		config_get type "$dev" type
		[ "$type" = atheros ] && return
		cat <<EOF
config wifi-device  $dev
	option type     atheros
	option channel  5
#       option diversity 1
#       option txantenna 0
#       option rxantenna 0
#       option distance  2000
# disable radio to prevent an open ap after reflashing:
	option disabled 1


config wifi-iface
	option device	$dev
	option network	lan
	option mode	ap
	option ssid	OpenWrt
	option hidden	0
#	option txpower	15
#	option bgscan	enable
	option encryption none

EOF
	done
}