-#!/bin/sh /etc/rc.common
-#
-# description: Startup/shutdown script for nodogsplash captive portal
-#
-# Alexander Couzens <lynxis@fe80.eu> 2014
-# P. Kube 2007
-#
-# (Based on wifidog startup script
-# Date : 2004-08-25
-# Version : 1.0
-# Comment by that author: Could be better, but it's working as expected)
-#
-
-START=95
-STOP=95
-
-USE_PROCD=1
-
-IPT=/usr/sbin/iptables
-WD_DIR=/usr/bin
-# -s -d 5 runs in background, with level 5 (not so verbose) messages to syslog
-# -f -d 7 runs in foreground, with level 7 (verbose) debug messages to terminal
-OPTIONS="-s -f -d 5"
-CONFIGFILE="/tmp/invalid_nodogsplash.conf"
-
-# nolog(loglevel message ...)
-nolog() {
- local level=$1
- shift
- logger -s -t nodogsplash -p daemon.$level $@
-}
-
-# append_config_option_map <cfgfile> <uci_cfg_obj> <option_name> <config_counterpart> [<optional default>]
-# append "$config_counterpart $value" to cfgfile if option_name exists
-# e.g. append_config_option "$CONFIGFILE" "$cfg" bind_address BindAddress 0.0.0.0
-# will append "BindAddress 192.168.1.1" if uci bind_address is '192.168.1.1'
-append_config_option_map() {
- local val=""
- local config_file="$1"
- local cfg="$2"
- local option_name="$3"
- local config_counterpart="$4"
- local default="$5"
- config_get val "$cfg" "$option_name" "$default"
- [ -n "$val" ] && echo "$config_counterpart $val" >> $config_file
-}
-
-# append_config_option <cfgfile> <uci_cfg_obj> <option_name> [<optional default>]
-# append "$option_name $value" to cfgfile if option_name exists
-# e.g. append_config_option "$CONFIGFILE" "$cfg" bind_address 0.0.0.0
-# will append "bind_address 192.168.1.1" if uci bind_address is '192.168.1.1'
-# if uci bind_address is unset append "bind_address 0.0.0.0"
-append_config_option() {
- local val=""
- local config_file="$1"
- local cfg="$2"
- local option_name="$3"
- local default="$4"
- config_get val "$cfg" "$option_name" "$default"
- [ -n "$val" ] && echo "$option_name $val" >> $config_file
-}
-
-setup_mac_lists() {
- local cfg="$1"
- local MAC=""
- local val
-
- append_mac() {
- append MAC "$1" ","
- }
-
- config_get val "$cfg" macmechanism
- if [ -z "$val" ] ; then
- # check if we have AllowedMACList or BlockedMACList defined they will be ignored
- config_get val "$cfg" allowedmac
- if [ -n "$val" ] ; then
- echo "Ignoring allowedmac - macmechanism not \"allow\"" >&2
- fi
-
- config_get val "$cfg" blockedmac
- if [ -n "$val" ] ; then
- echo "Ignoring blockedmac - macmechanism not \"block\"" >&2
- fi
- elif [ "$val" == "allow" ] ; then
- MAC=""
- config_list_foreach "$cfg" allowedmac append_mac
- echo "AllowedMACList $MAC" >> $CONFIGFILE
- elif [ "$val" == "block" ] ; then
- MAC=""
- config_list_foreach "$cfg" blockedmac append_mac
- echo "BlockedMACList $MAC" >> $CONFIGFILE
- else
- nolog error "$cfg Invalid macmechanism '$val' - allow or block are valid."
- return 1
- fi
- MAC=""
- config_list_foreach "$cfg" trustedmac append_mac
- [ -n "$MAC" ] && echo "TrustedMACList $MAC" >> $CONFIGFILE
-}
-
-setup_firewall() {
- local cfg="$1"
- local uciname
- local val
-
- append_firewall() {
- echo " FirewallRule $1" >> $CONFIGFILE
- }
-
- for rule in $(echo authenticated-users preauthenticated-users users-to-router trusted-users trusted-users-to-router)
- do
- uci_name=${rule//-/_}
- # uci does not allow - dashes
- echo "FirewallRuleSet $rule {" >> $CONFIGFILE
- config_list_foreach "$cfg" ${uci_name} append_firewall
- echo "}" >> $CONFIGFILE
- config_get val "$cfg" policy_${uci_name}
- [ -n "$val" ] && echo "EmptyRuleSetPolicy $rule $val" >> $CONFIGFILE
- done
-}
-
-wait_for_interface()
-{
- local ifname="$1"
- local timeout=10
- for i in $(seq $timeout); do
- if [ $(ip -4 addr show dev $ifname 2> /dev/null | grep -c inet) -ne 0 ]; then
- break
- fi
- sleep 1
- if [ $i == $timeout ] ; then
- nolog error "$ifname not detected, NoDogSplash not starting."
- exit 1
- fi
- done
-}
-
-generate_uci_config() {
- local cfg="$1"
- local val
- local ifname
- local download
- local upload
-
- CONFIGFILE="/tmp/etc/nodogsplash_$cfg.conf"
-
- echo "# auto-generated config file from /etc/config/nodogsplash" > $CONFIGFILE
-
- config_get val "$cfg" config
- if [ -n "$val" ] ; then
- if [ ! -f "$val" ] ; then
- nolog error "Configuration file '$file' doesn't exist"
- return 0
- fi
- cat "$val" >> $CONFIGFILE
- fi
-
- config_get val "$cfg" network
- if [ -n "$val" ] ; then
- if ! network_get_device ifname "$val" ; then
- nolog error "$cfg can not find ifname for network '$val'"
- return 1
- fi
- fi
-
- config_get val "$cfg" gatewayinterface
- if [ -n "$val" ] ; then
- if [ -n "$ifname" ] ; then
- nolog error "$cfg cannot use both option network and gatewayinterface"
- return 1
- fi
- ifname="$val"
- fi
-
- if [ -z "$ifname" ] ; then
- nolog error "$cfg option network or gatewayinterface missing"
- return 1
- fi
-
- wait_for_interface "$ifname"
-
- echo "GatewayInterface $ifname" >> $CONFIGFILE
-
- append_config_option "$CONFIGFILE" "$cfg" gatewayname
- append_config_option "$CONFIGFILE" "$cfg" gatewayaddress
- append_config_option "$CONFIGFILE" "$cfg" gatewayport
- append_config_option "$CONFIGFILE" "$cfg" maxclients
- append_config_option "$CONFIGFILE" "$cfg" webroot
- append_config_option "$CONFIGFILE" "$cfg" debuglevel
- append_config_option "$CONFIGFILE" "$cfg" splashpage
- append_config_option "$CONFIGFILE" "$cfg" pagesdir
- append_config_option "$CONFIGFILE" "$cfg" checkinterval
- append_config_option "$CONFIGFILE" "$cfg" syslogfacility
- append_config_option "$CONFIGFILE" "$cfg" gatewayiprange
- append_config_option "$CONFIGFILE" "$cfg" imagedir
- append_config_option "$CONFIGFILE" "$cfg" redirecturl
- append_config_option "$CONFIGFILE" "$cfg" clientidletimeout
- append_config_option "$CONFIGFILE" "$cfg" clientforcetimeout
- append_config_option "$CONFIGFILE" "$cfg" gatewayiprange
- append_config_option "$CONFIGFILE" "$cfg" passwordattempts
- append_config_option "$CONFIGFILE" "$cfg" macmechanism
- append_config_option "$CONFIGFILE" "$cfg" uploadlimit
- append_config_option "$CONFIGFILE" "$cfg" downloadlimit
- append_config_option "$CONFIGFILE" "$cfg" remoteauthenticatoraction
- append_config_option "$CONFIGFILE" "$cfg" enablepreauth
- append_config_option "$CONFIGFILE" "$cfg" binvoucher
- append_config_option "$CONFIGFILE" "$cfg" forcevoucher
- append_config_option "$CONFIGFILE" "$cfg" passwordauthentication
- append_config_option "$CONFIGFILE" "$cfg" usernameauthentication
- append_config_option "$CONFIGFILE" "$cfg" passwordattempts
- append_config_option "$CONFIGFILE" "$cfg" username
- append_config_option "$CONFIGFILE" "$cfg" password
- append_config_option "$CONFIGFILE" "$cfg" authenticateimmediately
- append_config_option "$CONFIGFILE" "$cfg" decongesthttpdthreads
- append_config_option "$CONFIGFILE" "$cfg" httpdthreadthreshold
- append_config_option "$CONFIGFILE" "$cfg" httpdthreaddelayms
- append_config_option "$CONFIGFILE" "$cfg" fw_mark_authenticated
- append_config_option "$CONFIGFILE" "$cfg" fw_mark_trusted
- append_config_option "$CONFIGFILE" "$cfg" fw_mark_blocked
-
- config_get download "$cfg" downloadlimit
- config_get upload "$cfg" uploadlimit
- [ -n "$upload" -o -n "$download" ] && echo "TrafficControl yes" >> $CONFIGFILE
-
- setup_mac_lists "$cfg"
- setup_firewall "$cfg"
-}
-
-# setup configuration and start instance
-create_instance() {
- local cfg="$1"
- local manual_config
- local val
-
- config_get_bool val "$cfg" enabled 0
- [ $val -gt 0 ] || return 0
-
- generate_uci_config "$cfg"
-
- if ! test_module ; then
- logger -s -t nodogsplash -p daemon.error "nodogsplash is missing some kernel modules"
- fi
-
- procd_open_instance $cfg
- procd_set_param command /usr/bin/nodogsplash -c $CONFIGFILE $OPTIONS
- procd_set_param respawn
- procd_set_param file $CONFIGFILE
- procd_close_instance
-}
-
-depends() {
- if [ "$1" = "iptables" ] ; then
- if [ $(uci get nodogsplash.@nodogsplash[0].fwhook_enabled) = "1" ] ; then
- if $WD_DIR/ndsctl status > /dev/null; then
- echo " * Restarting NodogSplash"
- /etc/init.d/nodogsplash restart
- fi
- else
- echo " * NodogSplash fwhook is disabled"
- fi
- fi
-}
-
-start_service() {
- include /lib/functions
- mkdir -p /tmp/etc/
-
- if [ $(uci get nodogsplash.@nodogsplash[0].fwhook_enabled) = "1" ] ; then
- if ! uci get firewall.nodogsplash2.path &> /dev/null ; then
- if [ -f '/tmp/etc/ndshook.include' ] ; then
- rm /tmp/etc/ndshook.include
- fi
- uci delete firewall.nodogsplash2 2> /dev/null
- uci set firewall.nodogsplash2=include
- uci set firewall.nodogsplash2.type=script
- uci set firewall.nodogsplash2.path='/tmp/etc/ndshook.include'
- uci commit firewall
- /etc/init.d/firewall restart 2>&1 | logger
- fi
-
- if [ ! -f '/tmp/etc/ndshook.include' ] ; then
- printf "if [ -f '/etc/init.d/nodogsplash' ] ; then /etc/init.d/nodogsplash depends iptables ; fi\n" > /tmp/etc/ndshook.include
- chmod +x /tmp/etc/ndshook.include
- fi
- fi
-
- config_load nodogsplash
-
- config_foreach create_instance nodogsplash
-}
-
-stop_service() {
- # nodogsplash doesn't exit fast enought, when procd terminates it.
- # otherwise procd will restart nodogsplash twice. first time starting nodogsplash fails, second time it succeeds
- sleep 1
-}
-
-status() {
- $WD_DIR/ndsctl status
-}
-
-# Test if we got all modules loaded
-test_module() {
- ### Test ipt_mark with iptables
- test_ipt_mark () {
- ($IPT -A FORWARD -m mark --mark 2 -j ACCEPT 2>&1) > /dev/null
- IPTABLES_OK=$?
- if [ "$IPTABLES_OK" -eq 0 ]; then
- ($IPT -D FORWARD -m mark --mark 2 -j ACCEPT 2>&1) > /dev/null
- return 0
- else
- return 1
- fi
- }
-
- ### Test ipt_mac with iptables
- test_ipt_mac () {
- ($IPT -A INPUT -m mac --mac-source 00:00:00:00:00:00 -j ACCEPT 2>&1) > /dev/null
- IPTABLES_OK=$?
- if [ "$IPTABLES_OK" -eq 0 ]; then
- ($IPT -D INPUT -m mac --mac-source 00:00:00:00:00:00 -j ACCEPT 2>&1) > /dev/null
- return 0
- else
- return 1
- fi
- }
-
- ### Test ipt_IMQ with iptables
- test_ipt_IMQ () {
- ($IPT -t mangle -A PREROUTING -j IMQ --todev 0 2>&1) > /dev/null
- IPTABLES_OK=$?
- if [ "$IPTABLES_OK" -eq 0 ]; then
- ($IPT -t mangle -D PREROUTING -j IMQ --todev 0 2>&1) > /dev/null
- return 0
- else
- return 1
- fi
- }
-
- ### Test imq with ip
- test_imq () {
- (ip link set imq0 up 2>&1) > /dev/null
- IMQ0_OK=$?
- (ip link set imq1 up 2>&1) > /dev/null
- IMQ1_OK=$?
- if [ "$IMQ0_OK" -eq 0 -a "$IMQ1_OK" -eq 0 ]; then
- (ip link set imq0 down 2>&1) > /dev/null
- (ip link set imq1 down 2>&1) > /dev/null
- return 0
- else
- return 1
- fi
- }
-
- ### Test sch_htb with tc; requires imq0
- test_sch_htb () {
- (tc qdisc del dev imq0 root 2>&1) > /dev/null
- (tc qdisc add dev imq0 root htb 2>&1) > /dev/null
- TC_OK=$?
- if [ "$TC_OK" -eq 0 ]; then
- (tc qdisc del dev imq0 root 2>&1) > /dev/null
- return 0
- else
- return 1
- fi
- }
-
- ### Find a module on disk
- module_exists () {
- EXIST=$(find /lib/modules/`uname -r` -name $1.*o 2> /dev/null)
- if [ -n "$EXIST" ]; then
- return 0
- else
- return 1
- fi
- }
-
- ### Test if a module is in memory
- module_in_memory () {
- MODULE=$(lsmod | grep $1 | awk '{print $1}')
- if [ "$MODULE" = "$1" ]; then
- return 0
- else
- return 1
- fi
- }
-}