Root/package/hostapd/files/hostapd.sh

1hostapd_set_bss_options() {
2    local var="$1"
3    local vif="$2"
4    local enc wpa_group_rekey wps_possible
5
6    config_get enc "$vif" encryption
7    config_get wpa_group_rekey "$vif" wpa_group_rekey
8    config_get_bool ap_isolate "$vif" isolate 0
9
10    config_get device "$vif" device
11    config_get hwmode "$device" hwmode
12
13    if [ "$ap_isolate" -gt 0 ]; then
14        append "$var" "ap_isolate=$ap_isolate" "$N"
15    fi
16
17    # Examples:
18    # psk-mixed/tkip => WPA1+2 PSK, TKIP
19    # wpa-psk2/tkip+aes => WPA2 PSK, CCMP+TKIP
20    # wpa2/tkip+aes => WPA2 RADIUS, CCMP+TKIP
21    # ...
22
23    # TODO: move this parsing function somewhere generic, so that
24    # later it can be reused by drivers that don't use hostapd
25
26    # crypto defaults: WPA2 vs WPA1
27    case "$enc" in
28        wpa2*|*psk2*)
29            wpa=2
30            crypto="CCMP"
31        ;;
32        *mixed*)
33            wpa=3
34            crypto="CCMP TKIP"
35        ;;
36        *)
37            wpa=1
38            crypto="TKIP"
39        ;;
40    esac
41
42    # explicit override for crypto setting
43    case "$enc" in
44        *tkip+aes|*tkip+ccmp|*aes+tkip|*ccmp+tkip) crypto="CCMP TKIP";;
45        *aes|*ccmp) crypto="CCMP";;
46        *tkip) crypto="TKIP";;
47    esac
48
49    # enforce CCMP for 11ng and 11na
50    case "$hwmode" in
51        *ng|*na) crypto="CCMP";;
52    esac
53
54    # use crypto/auth settings for building the hostapd config
55    case "$enc" in
56        *psk*)
57            config_get psk "$vif" key
58            if [ ${#psk} -eq 64 ]; then
59                append "$var" "wpa_psk=$psk" "$N"
60            else
61                append "$var" "wpa_passphrase=$psk" "$N"
62            fi
63            wps_possible=1
64        ;;
65        *wpa*)
66            # required fields? formats?
67            # hostapd is particular, maybe a default configuration for failures
68            config_get server "$vif" server
69            append "$var" "auth_server_addr=$server" "$N"
70            config_get port "$vif" port
71            port=${port:-1812}
72            append "$var" "auth_server_port=$port" "$N"
73            config_get secret "$vif" key
74            append "$var" "auth_server_shared_secret=$secret" "$N"
75            config_get nasid "$vif" nasid
76            append "$var" "nas_identifier=$nasid" "$N"
77            append "$var" "eapol_key_index_workaround=1" "$N"
78            append "$var" "radius_acct_interim_interval=300" "$N"
79            append "$var" "ieee8021x=1" "$N"
80            append "$var" "wpa_key_mgmt=WPA-EAP" "$N"
81            append "$var" "wpa_group_rekey=300" "$N"
82            append "$var" "wpa_gmk_rekey=640" "$N"
83        ;;
84        *wep*)
85            config_get key "$vif" key
86            key="${key:-1}"
87            case "$key" in
88                [1234])
89                    for idx in 1 2 3 4; do
90                        local zidx
91                        zidx=$(($idx - 1))
92                        config_get ckey "$vif" "key${idx}"
93                        [ -n "$ckey" ] && \
94                            append "$var" "wep_key${zidx}=$(prepare_key_wep "$ckey")" "$N"
95                    done
96                    append "$var" "wep_default_key=$((key - 1))" "$N"
97                ;;
98                *)
99                    append "$var" "wep_key0=$(prepare_key_wep "$key")" "$N"
100                    append "$var" "wep_default_key=0" "$N"
101                ;;
102            esac
103            case "$enc" in
104                *shared*)
105                    auth_algs=2
106                ;;
107                *mixed*)
108                    auth_algs=3
109                ;;
110            esac
111            wpa=0
112            crypto=
113        ;;
114        *)
115            wpa=0
116            crypto=
117        ;;
118    esac
119    append "$var" "auth_algs=${auth_algs:-1}" "$N"
120    append "$var" "wpa=$wpa" "$N"
121    [ -n "$crypto" ] && append "$var" "wpa_pairwise=$crypto" "$N"
122    [ -n "$wpa_group_rekey" ] && append "$var" "wpa_group_rekey=$wpa_group_rekey" "$N"
123
124    config_get ssid "$vif" ssid
125    config_get bridge "$vif" bridge
126    config_get ieee80211d "$vif" ieee80211d
127    config_get iapp_interface "$vif" iapp_interface
128
129    config_get_bool wps_pbc "$vif" wps_pushbutton 0
130    [ -n "$wps_possible" -a "$wps_pbc" -gt 0 ] && {
131        append "$var" "eap_server=1" "$N"
132        append "$var" "wps_state=2" "$N"
133        append "$var" "ap_setup_locked=1" "$N"
134        append "$var" "config_methods=push_button" "$N"
135    }
136
137    append "$var" "ssid=$ssid" "$N"
138    [ -n "$bridge" ] && append "$var" "bridge=$bridge" "$N"
139    [ -n "$ieee80211d" ] && append "$var" "ieee80211d=$ieee80211d" "$N"
140    [ -n "$iapp_interface" ] && append "$var" $(uci_get_state network "$iapp_interface" ifname "$iapp_interface") "$N"
141
142    [ "$wpa" -ge "2" ] && config_get ieee80211w "$vif" ieee80211w
143    case "$ieee80211w" in
144        [012])
145            append "$var" "ieee80211w=$ieee80211w" "$N"
146            [ "$ieee80211w" -gt "0" ] && {
147                config_get ieee80211w_max_timeout "$vif" ieee80211w_max_timeout
148                config_get ieee80211w_retry_timeout "$vif" ieee80211w_retry_timeout
149                [ -n "$ieee80211w_max_timeout" ] && \
150                    append "$var" "assoc_sa_query_max_timeout=$ieee80211w_max_timeout" "$N"
151                [ -n "$ieee80211w_retry_timeout" ] && \
152                    append "$var" "assoc_sa_query_retry_timeout=$ieee80211w_retry_timeout" "$N"
153            }
154        ;;
155    esac
156}
157
158hostapd_setup_vif() {
159    local vif="$1"
160    local driver="$2"
161    hostapd_cfg=
162
163    hostapd_set_bss_options hostapd_cfg "$vif"
164    config_get ifname "$vif" ifname
165    config_get device "$vif" device
166    config_get channel "$device" channel
167    config_get hwmode "$device" hwmode
168    case "$hwmode" in
169        *bg|*gdt|*gst|*fh) hwmode=g;;
170        *adt|*ast) hwmode=a;;
171    esac
172    [ "$channel" = auto ] && channel=
173    [ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
174    cat > /var/run/hostapd-$ifname.conf <<EOF
175ctrl_interface=/var/run/hostapd-$ifname
176driver=$driver
177interface=$ifname
178${hwmode:+hw_mode=${hwmode#11}}
179${channel:+channel=$channel}
180$hostapd_cfg
181EOF
182    hostapd -P /var/run/wifi-$ifname.pid -B /var/run/hostapd-$ifname.conf
183}
184
185

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