summaryrefslogtreecommitdiff
path: root/package/hostapd/files/hostapd.sh
blob: d60c26f3c6857602e605f720fd249b2b32ecb355 (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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
hostapd_set_bss_options() {
	local var="$1"
	local vif="$2"
	local enc wep_rekey wpa_group_rekey wpa_pair_rekey wpa_master_rekey wps_possible

	config_get enc "$vif" encryption
	config_get wep_rekey        "$vif" wep_rekey        # 300
	config_get wpa_group_rekey  "$vif" wpa_group_rekey  # 300
	config_get wpa_pair_rekey   "$vif" wpa_pair_rekey   # 300
	config_get wpa_master_rekey "$vif" wpa_master_rekey # 640
	config_get_bool ap_isolate "$vif" isolate 0
	config_get_bool disassoc_low_ack "$vif" disassoc_low_ack 1
	config_get max_num_sta "$vif" max_num_sta 0
	config_get max_inactivity "$vif" max_inactivity 0

	config_get device "$vif" device
	config_get hwmode "$device" hwmode
	config_get phy "$device" phy

	append "$var" "ctrl_interface=/var/run/hostapd-$phy" "$N"

	if [ "$ap_isolate" -gt 0 ]; then
		append "$var" "ap_isolate=$ap_isolate" "$N"
	fi
	if [ "$max_num_sta" -gt 0 ]; then
		append "$var" "max_num_sta=$max_num_sta" "$N"
	fi
	if [ "$max_inactivity" -gt 0 ]; then
		append "$var" "ap_max_inactivity=$max_inactivity" "$N"
	fi
	append "$var" "disassoc_low_ack=$disassoc_low_ack" "$N"

	# 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|*aes+tkip|*ccmp+tkip) crypto="CCMP TKIP";;
		*aes|*ccmp) crypto="CCMP";;
		*tkip) crypto="TKIP";;
	esac

	# enforce CCMP for 11ng and 11na
	case "$hwmode:$crypto" in
		*ng:TKIP|*na:TKIP) crypto="CCMP 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" "$N"
			fi
			wps_possible=1
			[ -n "$wpa_group_rekey"  ] && append "$var" "wpa_group_rekey=$wpa_group_rekey" "$N"
			[ -n "$wpa_pair_rekey"   ] && append "$var" "wpa_ptk_rekey=$wpa_pair_rekey"    "$N"
			[ -n "$wpa_master_rekey" ] && append "$var" "wpa_gmk_rekey=$wpa_master_rekey"  "$N"
		;;
		*wpa*)
			# required fields? formats?
			# hostapd is particular, maybe a default configuration for failures
			config_get auth_server "$vif" auth_server
			[ -z "$auth_server" ] && config_get auth_server "$vif" server
			append "$var" "auth_server_addr=$auth_server" "$N"
			config_get auth_port "$vif" auth_port
			[ -z "$auth_port" ] && config_get auth_port "$vif" port
			auth_port=${auth_port:-1812}
			append "$var" "auth_server_port=$auth_port" "$N"
			config_get auth_secret "$vif" auth_secret
			[ -z "$auth_secret" ] && config_get auth_secret "$vif" key
			append "$var" "auth_server_shared_secret=$auth_secret" "$N"
			config_get_bool auth_cache "$vif" auth_cache 0
			[ "$auth_cache" -gt 0 ] || append "$var" "disable_pmksa_caching=1" "$N"
			[ "$auth_cache" -gt 0 ] || append "$var" "okc=0" "$N"
			config_get acct_server "$vif" acct_server
			[ -n "$acct_server" ] && append "$var" "acct_server_addr=$acct_server" "$N"
			config_get acct_port "$vif" acct_port
			[ -n "$acct_port" ] && acct_port=${acct_port:-1813}
			[ -n "$acct_port" ] && append "$var" "acct_server_port=$acct_port" "$N"
			config_get acct_secret "$vif" acct_secret
			[ -n "$acct_secret" ] && append "$var" "acct_server_shared_secret=$acct_secret" "$N"
			config_get nasid "$vif" nasid
			append "$var" "nas_identifier=$nasid" "$N"
			append "$var" "eapol_key_index_workaround=1" "$N"
			append "$var" "ieee8021x=1" "$N"
			append "$var" "wpa_key_mgmt=WPA-EAP" "$N"
			[ -n "$wpa_group_rekey"  ] && append "$var" "wpa_group_rekey=$wpa_group_rekey" "$N"
			[ -n "$wpa_pair_rekey"   ] && append "$var" "wpa_ptk_rekey=$wpa_pair_rekey"    "$N"
			[ -n "$wpa_master_rekey" ] && append "$var" "wpa_gmk_rekey=$wpa_master_rekey"  "$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"
					[ -n "$wep_rekey" ] && append "$var" "wep_rekey_period=$wep_rekey" "$N"
				;;
			esac
			case "$enc" in
				*shared*)
					auth_algs=2
				;;
				*mixed*)
					auth_algs=3
				;;
			esac
			wpa=0
			crypto=
		;;
		*)
			wpa=0
			crypto=
		;;
	esac
	append "$var" "auth_algs=${auth_algs:-1}" "$N"
	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 "$vif" ieee80211d
	config_get iapp_interface "$vif" iapp_interface

	config_get_bool wps_pbc "$vif" wps_pushbutton 0
	config_get_bool wps_label "$vif" wps_label 0

	config_get config_methods "$vif" wps_config
	[ "$wps_pbc" -gt 0 ] && append config_methods push_button

	[ -n "$wps_possible" -a -n "$config_methods" ] && {
		config_get device_type "$vif" wps_device_type "6-0050F204-1"
		config_get device_name "$vif" wps_device_name "OpenWrt AP"
		config_get manufacturer "$vif" wps_manufacturer "openwrt.org"

		append "$var" "eap_server=1" "$N"
		append "$var" "wps_state=2" "$N"
		append "$var" "ap_setup_locked=1" "$N"
		append "$var" "device_type=$device_type" "$N"
		append "$var" "device_name=$device_name" "$N"
		append "$var" "manufacturer=$manufacturer" "$N"
		append "$var" "config_methods=$config_methods" "$N"
	}

	append "$var" "ssid=$ssid" "$N"
	[ -n "$bridge" ] && append "$var" "bridge=$bridge" "$N"
	[ -n "$ieee80211d" ] && append "$var" "ieee80211d=$ieee80211d" "$N"
	[ -n "$iapp_interface" ] && append "$var" iapp_interface=$(uci_get_state network "$iapp_interface" ifname "$iapp_interface") "$N"

	if [ "$wpa" -ge "2" ]
	then
		# RSN -> allow preauthentication
		config_get_bool rsn_preauth "$vif" rsn_preauth "$auth_cache"
		if [ -n "$bridge" -a "$rsn_preauth" = 1 ]
		then
			append "$var" "rsn_preauth=1" "$N"
			append "$var" "rsn_preauth_interfaces=$bridge" "$N"
		fi

		# RSN -> allow management frame protection
		config_get ieee80211w "$vif" ieee80211w
		case "$ieee80211w" in
			[012])
				append "$var" "ieee80211w=$ieee80211w" "$N"
				[ "$ieee80211w" -gt "0" ] && {
					config_get ieee80211w_max_timeout "$vif" ieee80211w_max_timeout
					config_get ieee80211w_retry_timeout "$vif" ieee80211w_retry_timeout
					[ -n "$ieee80211w_max_timeout" ] && \
						append "$var" "assoc_sa_query_max_timeout=$ieee80211w_max_timeout" "$N"
					[ -n "$ieee80211w_retry_timeout" ] && \
						append "$var" "assoc_sa_query_retry_timeout=$ieee80211w_retry_timeout" "$N"
				}
			;;
		esac
	fi
}

hostapd_set_log_options() {
	local var="$1"
	local cfg="$2"
	local log_level log_80211 log_8021x log_radius log_wpa log_driver log_iapp log_mlme

	config_get log_level "$cfg" log_level 2

	config_get_bool log_80211  "$cfg" log_80211  1
	config_get_bool log_8021x  "$cfg" log_8021x  1
	config_get_bool log_radius "$cfg" log_radius 1
	config_get_bool log_wpa    "$cfg" log_wpa    1
	config_get_bool log_driver "$cfg" log_driver 1
	config_get_bool log_iapp   "$cfg" log_iapp   1
	config_get_bool log_mlme   "$cfg" log_mlme   1

	local log_mask=$((       \
		($log_80211  << 0) | \
		($log_8021x  << 1) | \
		($log_radius << 2) | \
		($log_wpa    << 3) | \
		($log_driver << 4) | \
		($log_iapp   << 5) | \
		($log_mlme   << 6)   \
	))

	append "$var" "logger_syslog=$log_mask" "$N"
	append "$var" "logger_syslog_level=$log_level" "$N"
	append "$var" "logger_stdout=$log_mask" "$N"
	append "$var" "logger_stdout_level=$log_level" "$N"
}

hostapd_setup_vif() {
	local vif="$1"
	local driver="$2"
	local ifname device channel hwmode

	hostapd_cfg=

	config_get ifname "$vif" ifname
	config_get device "$vif" device
	config_get channel "$device" channel
	config_get hwmode "$device" hwmode

	hostapd_set_log_options hostapd_cfg "$device"
	hostapd_set_bss_options hostapd_cfg "$vif"

	case "$hwmode" in
		*bg|*gdt|*gst|*fh) hwmode=g;;
		*adt|*ast) hwmode=a;;
	esac
	[ "$channel" = auto ] && channel=
	[ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
	cat > /var/run/hostapd-$ifname.conf <<EOF
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
}