applications/luci-splash/root/etc/init.d/luci_splash

   1 #!/bin/sh /etc/rc.common
   2
   3 set -x
   4 START=70
   5 EXTRA_COMMANDS=clear_leases
   6 LIMIT_DOWN=0
   7 LIMIT_DOWN_BURST=0
   8 LIMIT_UP=0
   9
  10 IPT_REPLAY=/var/run/luci_splash.iptlog
  11 LOCK=/var/run/luci_splash.lock
  12 [ -x /usr/sbin/ip6tables ] && [ -f /proc/net/ipv6_route ] && HAS_IPV6=1
  13
  14 silent() {
  15         "$@" 2>/dev/null
  16 }
  17
  18 ipt_log() {
  19         iptables -I "$@"
  20         echo iptables -D "$@" >> $IPT_REPLAY
  21 }
  22
  23 ipt6_log() {
  24         [ "$HAS_IPV6" = 1 ] || return
  25         ip6tables -I "$@"
  26         echo ip6tables -D "$@" >> $IPT_REPLAY
  27 }
  28
  29
  30 iface_add() {
  31         local cfg="$1"
  32
  33         config_get zone "$cfg" zone
  34         [ -n "$zone" ] || return 0
  35
  36         config_get net "$cfg" network
  37         [ -n "$net" ] || return 0
  38
  39         config_get ifname "$net" ifname
  40         [ -n "$ifname" ] || return 0
  41
  42         config_get ipaddr "$net" ipaddr
  43         [ -n "$ipaddr" ] || return 0
  44
  45         config_get ip6addr "$net" ip6addr
  46         #[ -n "$ipaddr" ] || return 0
  47
  48         config_get netmask "$net" netmask
  49         [ -n "$netmask" ] || return 0
  50
  51         config_get type "$net" type
  52
  53         parentiface="$(uci -q get network.${net}.ifname)"
  54
  55         [ -n "$parentiface" ] && [ ! "$type" = "bridge" ] && {
  56                 parentiface=${parentiface#@}
  57                 config_get parentproto   "$parentiface" proto
  58                 config_get parentipaddr  "$parentiface" ipaddr
  59                 config_get parentnetmask "$parentiface" netmask
  60         }
  61
  62         eval "$(ipcalc.sh $ipaddr $netmask)"
  63
  64         ### Add interface specific chain entry rules
  65         ipt_log "zone_${zone}_prerouting" -i "${ifname%:*}" -s "$NETWORK/$PREFIX" -j luci_splash_prerouting -t nat
  66         ipt_log "zone_${zone}_forward"    -i "${ifname%:*}" -s "$NETWORK/$PREFIX" -j luci_splash_forwarding -t filter
  67
  68         if [ "$HAS_IPV6" = 1 ] && [ -n "$ip6addr" ]; then
  69                 ipt6_log "zone_${zone}_forward"    -i "${ifname%:*}" -s "$ip6addr" -j luci_splash_forwarding -t filter
  70         fi
  71
  72         ### Allow traffic to the same subnet
  73         iptables -t nat    -I luci_splash_prerouting -d "$ipaddr/${netmask:-32}" -j RETURN
  74         iptables -t filter -I luci_splash_forwarding -d "$ipaddr/${netmask:-32}" -j RETURN
  75
  76         ### Allow traffic to the mesh subnet
  77         [ "$parentproto" = "static" -a -n "$parentipaddr" ] && {
  78                 iptables -t nat    -I luci_splash_prerouting -d "$parentipaddr/${parentnetmask:-32}" -j RETURN
  79                 iptables -t filter -I luci_splash_forwarding -d "$parentipaddr/${parentnetmask:-32}" -j RETURN
  80         }
  81
  82         qos_iface_add "$ifname"
  83 }
  84
  85 iface_del() {
  86         config_get zone "$1" zone
  87         [ -n "$zone" ] || return 0
  88
  89         config_get net "$1" network
  90         [ -n "$net" ] || return 0
  91
  92         config_get ifname "$net" ifname
  93         [ -n "$ifname" ] || return 0
  94
  95         # Clear interface specific rules
  96         [ -s $IPT_REPLAY ] && {
  97                 grep -- "-i ${ifname%:*}" $IPT_REPLAY | while read ln; do silent $ln; done
  98                 sed -ie "/-i ${ifname%:*}/d" $IPT_REPLAY
  99         }
 100
 101         qos_iface_del "$ifname"
 102 }
 103
 104 mac_add() {
 105         config_get mac "$1" mac
 106         append MACS "$mac"
 107 }
 108
 109 subnet_add() {
 110         local cfg="$1"
 111
 112         config_get ipaddr  "$cfg" ipaddr
 113         config_get netmask "$cfg" netmask
 114
 115         [ -n "$ipaddr" ] && {
 116                 iptables -t nat    -I luci_splash_prerouting -d "$ipaddr/${netmask:-32}" -j RETURN
 117                 iptables -t filter -I luci_splash_forwarding -d "$ipaddr/${netmask:-32}" -j RETURN
 118         }
 119 }
 120
 121 qos_iface_add() {
 122         local iface="$1"
 123
 124         # 77 -> download root qdisc
 125         # 78 -> upload root qdisc
 126         # 79 -> fwmark: client->inet
 127         # 80 -> fwmark: inet->client
 128
 129         silent tc qdisc del dev "$iface" root handle 77:
 130
 131         if [ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ]; then
 132                 tc qdisc add dev "$iface" root handle 77: htb
 133
 134                 # assume maximum rate of 20.000 kilobit for wlan
 135                 tc class add dev "$iface" parent 77: classid 77:1 htb rate 20000kbit
 136
 137                 # set download limit and burst
 138                 tc class add dev "$iface" parent 77:1 classid 77:10 htb \
 139                         rate ${LIMIT_DOWN}kbit ceil ${LIMIT_DOWN_BURST}kbit prio 2
 140
 141                 tc qdisc add dev "$iface" parent 77:10 handle 78: sfq perturb 10
 142
 143                 # adding ingress can result in "File exists" if qos-scripts are active
 144                 silent tc qdisc add dev "$iface" ingress
 145
 146                 # set client download speed
 147                 tc filter add dev "$iface" parent 77: protocol ip prio 2 \
 148                         handle 80 fw flowid 77:10
 149
 150                 # set client upload speed
 151                 tc filter add dev "$iface" parent ffff: protocol ip prio 1 \
 152                         handle 79 fw police rate ${LIMIT_UP}kbit mtu 6k burst 6k drop
 153         fi
 154 }
 155
 156 qos_iface_del() {
 157         local iface="$1"
 158
 159         silent tc qdisc del dev "$iface" root handle 77:
 160         silent tc qdisc del dev "$iface" root handle 78:
 161         silent tc filter del dev "$iface" parent ffff: protocol ip prio 1 handle 79 fw
 162 }
 163
 164 boot() {
 165         ### Setup splash-relay
 166         uci get uhttpd.splash 2>/dev/null || {
 167 uci batch <<EOF
 168         set uhttpd.splash=uhttpd
 169         set uhttpd.splash.home="/www/cgi-bin/splash/"
 170         set uhttpd.splash.interpreter=".sh=/bin/ash"
 171         set uhttpd.splash.listen_http="8082"
 172         set uhttpd.splash.index_page="splash.sh"
 173         set uhttpd.splash.error_page="/splash.sh"
 174
 175         commit uhttpd
 176 EOF
 177         }
 178
 179         ### We are started by the firewall include
 180         exit 0
 181 }
 182
 183 start() {
 184         lock $LOCK
 185
 186         include /lib/network
 187         scan_interfaces
 188         config_load luci_splash
 189
 190         ### Find QoS limits
 191         config_get LIMIT_UP general limit_up
 192         config_get LIMIT_DOWN general limit_down
 193         config_get LIMIT_DOWN_BURST general limit_down_burst
 194
 195         LIMIT_UP="$((8*${LIMIT_UP:-0}))"
 196         LIMIT_DOWN="$((8*${LIMIT_DOWN:-0}))"
 197         LIMIT_DOWN_BURST="${LIMIT_DOWN_BURST:+$((8*$LIMIT_DOWN_BURST))}"
 198         LIMIT_DOWN_BURST="${LIMIT_DOWN_BURST:-$(($LIMIT_DOWN / 5 * 6))}"
 199
 200         ### Load required modules
 201         [ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ] && {
 202                 silent insmod act_police
 203                 silent insmod cls_fw
 204                 silent insmod cls_u32
 205                 silent insmod sch_htb
 206                 silent insmod sch_sfq
 207                 silent insmod sch_ingress
 208         }
 209
 210         ### Create subchains
 211         iptables -t nat    -N luci_splash_prerouting
 212         iptables -t nat    -N luci_splash_leases
 213         iptables -t filter -N luci_splash_forwarding
 214         iptables -t filter -N luci_splash_filter
 215
 216         if [ "$HAS_IPV6" = 1 ]; then
 217                 ip6tables -t filter -N luci_splash_forwarding
 218                 ip6tables -t filter -N luci_splash_filter
 219         fi
 220
 221         ### Clear iptables replay log
 222         [ -s $IPT_REPLAY ] && . $IPT_REPLAY
 223         echo -n > $IPT_REPLAY
 224
 225         ### Build the main and portal rule
 226         config_foreach iface_add iface
 227         config_foreach subnet_add subnet
 228
 229         ### Add interface independant prerouting rules
 230         iptables -t nat -A luci_splash_prerouting -j luci_splash_leases
 231         iptables -t nat -A luci_splash_leases -p udp --dport 53 -j REDIRECT --to-ports 53
 232         iptables -t nat -A luci_splash_leases -p tcp --dport 80 -j REDIRECT --to-ports 8082
 233
 234         ### Add interface independant forwarding rules
 235         iptables -t filter -A luci_splash_forwarding -j luci_splash_filter
 236         iptables -t filter -A luci_splash_filter -p tcp -j REJECT --reject-with tcp-reset
 237         iptables -t filter -A luci_splash_filter -j REJECT --reject-with icmp-net-prohibited
 238
 239         if [ "$HAS_IPV6" = 1 ]; then
 240                 ip6tables -t filter -A luci_splash_forwarding -j luci_splash_filter
 241                 ip6tables -t filter -A luci_splash_filter -p tcp -j REJECT --reject-with tcp-reset
 242                 ip6tables -t filter -A luci_splash_filter -j REJECT --reject-with adm-prohibited
 243         fi
 244
 245         ### Add QoS chain
 246         [ "$LIMIT_UP" -gt 0 -a "$LIMIT_DOWN" -gt 0 ] && {
 247                 iptables -t mangle -N luci_splash_mark_out
 248                 iptables -t mangle -N luci_splash_mark_in
 249                 iptables -t mangle -I PREROUTING  -j luci_splash_mark_out
 250                 iptables -t mangle -I POSTROUTING -j luci_splash_mark_in
 251                 if [ "$HAS_IPV6" = 1 ]; then
 252                         ip6tables -t mangle -N luci_splash_mark_out
 253                         ip6tables -t mangle -N luci_splash_mark_in
 254                         ip6tables -t mangle -I PREROUTING  -j luci_splash_mark_out
 255                         ip6tables -t mangle -I POSTROUTING -j luci_splash_mark_in
 256                 fi
 257         }
 258
 259         ### Find active mac addresses
 260         MACS=""
 261         config_foreach mac_add lease
 262         config_foreach mac_add blacklist
 263         config_foreach mac_add whitelist
 264
 265         ### Add crontab entry
 266         test -f /etc/crontabs/root || touch /etc/crontabs/root
 267         grep -q luci-splash /etc/crontabs/root || {
 268                 echo '*/5 * * * *       /usr/sbin/luci-splash sync' >> /etc/crontabs/root
 269         }
 270
 271         lock -u $LOCK
 272
 273         ### Populate iptables
 274         [ -n "$MACS" ] && luci-splash add-rules $MACS
 275 }
 276
 277 stop() {
 278         lock $LOCK
 279
 280         include /lib/network
 281         scan_interfaces
 282         config_load luci_splash
 283
 284         ### Clear interface rules
 285         config_foreach iface_del iface
 286
 287         silent iptables -t mangle -D PREROUTING  -j luci_splash_mark_out
 288         silent iptables -t mangle -D POSTROUTING -j luci_splash_mark_in
 289
 290         if [ "$HAS_IPV6" = 1 ]; then
 291                 silent ip6tables -t mangle -D PREROUTING  -j luci_splash_mark_out
 292                 silent ip6tables -t mangle -D POSTROUTING -j luci_splash_mark_in
 293         fi
 294
 295         ### Clear subchains
 296         silent iptables -t nat    -F luci_splash_prerouting
 297         silent iptables -t nat    -F luci_splash_leases
 298         silent iptables -t filter -F luci_splash_forwarding
 299         silent iptables -t filter -F luci_splash_filter
 300         silent iptables -t mangle -F luci_splash_mark_out
 301         silent iptables -t mangle -F luci_splash_mark_in
 302
 303         if [ "$HAS_IPV6" = 1 ]; then
 304                 ip6tables -t filter -F luci_splash_forwarding
 305                 ip6tables -t filter -F luci_splash_filter
 306                 ip6tables -t mangle -F luci_splash_mark_out
 307                 ip6tables -t mangle -F luci_splash_mark_in
 308         fi
 309
 310         ### Delete subchains
 311         silent iptables -t nat    -X luci_splash_prerouting
 312         silent iptables -t nat    -X luci_splash_leases
 313         silent iptables -t filter -X luci_splash_forwarding
 314         silent iptables -t filter -X luci_splash_filter
 315         silent iptables -t mangle -X luci_splash_mark_out
 316         silent iptables -t mangle -X luci_splash_mark_in
 317         if [ "$HAS_IPV6" = 1 ]; then
 318                 ip6tables -t filter -X luci_splash_forwarding
 319                 ip6tables -t filter -X luci_splash_filter
 320                 ip6tables -t mangle -X luci_splash_mark_out
 321                 ip6tables -t mangle -X luci_splash_mark_in
 322         fi
 323         sed -ie '/\/usr\/sbin\/luci-splash sync/d' /var/spool/cron/crontabs/root
 324
 325         lock -u $LOCK
 326 }
 327
 328 clear_leases() {
 329         ### Find active mac addresses
 330         MACS=""
 331         config_foreach mac_add lease
 332
 333         ### Clear leases
 334         [ -n "$MACS" ] && luci-splash remove $MACS
 335 }
 336