forked from freifunk-franken/firmware
249 lines
7.5 KiB
Bash
Executable File
249 lines
7.5 KiB
Bash
Executable File
#!/bin/sh
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# Allow only one instance
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lockfile="/var/lock/${0##*/}.lock"
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if ! lock -n "$lockfile"; then
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echo "Only one instance of $0 allowed."
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exit 1
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fi
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trap "lock -u \"$lockfile\"" INT TERM EXIT
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. /usr/share/libubox/jshn.sh
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. /lib/functions/fff/keyxchange
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. /lib/functions/fff/network
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. /lib/functions/fff/wireless
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. /lib/functions/fff/timeserver
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. /usr/lib/functions/fff/hoodfile
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hoodfilelocal=/etc/hoodfile
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rm -f "$hoodfiletmp"
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# Gatewaycheck function
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isGatewayAvailable() {
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if [ -n "$(batctl gwl -H)" ]; then
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return 0
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else
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return 1
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fi
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}
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# Ping test
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hasInternet() {
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internetAddresses="keyserver.freifunk-franken.de heise.de"
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for addr in $internetAddresses; do
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ping -w5 -c3 "$addr" &>/dev/null && return 0
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done
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return 1
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}
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if [ -s "$hoodfilelocal" ]; then
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# remove webroot hoodfile to prevent offering local hoodfiles to neighbours
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rm -f "$hoodfilewww"
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cp "$hoodfilelocal" "$hoodfiletmp"
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echo "Use local hood file"
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else
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# if internet is available, the hoodfile is downloaded from our keyserver
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if getKeyserverHoodfile "$hoodfiletmp"; then
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cp "$hoodfiletmp" "$hoodfilewww"
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# if no internet is available, but the node is already configured,
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# a gateway with the appropriate hoodfile should be available
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elif getGatewayHoodfile "$hoodfiletmp"; then
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cp "$hoodfiletmp" "$hoodfilewww"
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# no internet and no gateway available. the node is either unconfigured,
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# has lost connectivity or the hood is broken. Try to regain connectivity by
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# fetching hoodfiles from nearby nodes
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else
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rm -f "$hoodfileref" # delete this, so interfaces are recreated if reconnect with unchanged hood file takes place
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rm -f "$hoodfilewww" # delete this, so wrong hood file is not broadcasted anymore
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uci -q del "system.@system[0].hood"
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uci -q del "system.@system[0].hoodid"
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uci commit system
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reload_config
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sleep 30 # Wait for the config AP, which may be created at the same time as this script has started
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getEthernetHoodfile "$hoodfiletmp" || getWirelessHoodfile "$hoodfiletmp"
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fi
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fi
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if [ -s "$hoodfiletmp" ]; then
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# we get a json file in this format:
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# https://pw.freifunk-franken.de/patch/205/
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# but without signature, every hood file we get is valid!
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sumnew=$(sha256sum "$hoodfiletmp" 2>/dev/null | cut -f1 -d " ")
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sumold=$(sha256sum "$hoodfileref" 2>/dev/null | cut -f1 -d " ")
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json_load "$(cat "$hoodfiletmp")"
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if [ "$sumnew" != "$sumold" ] ; then
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echo "New file detected, we reconfigure the Node";
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json_select hood
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json_get_var hood name
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json_get_var hoodid id
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[ -n "$mesh_id" ] || json_get_var mesh_id mesh_id
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[ -n "$mesh_bssid" ] || json_get_var mesh_bssid mesh_bssid
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[ -n "$mesh_essid" ] || json_get_var mesh_essid mesh_essid
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[ -n "$essid" ] || json_get_var essid essid
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json_get_var ntpip ntp_ip
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[ -n "$chan2ghz" ] || json_get_var chan2ghz channel2
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[ -n "$mesh_type2" ] || json_get_var mesh_type2 mesh_type2
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[ -n "$chan5ghz" ] || json_get_var chan5ghz channel5
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[ -n "$mesh_type5" ] || json_get_var mesh_type5 mesh_type5
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# Additional parameters may be activated in future versions
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#json_get_var mode2 mode2
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#json_get_var mode5 mode5
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#json_get_var protocol protocol
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json_select ".." # back to root
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if [ -z "$chan2ghz" ] || [ -z "$chan5ghz" ] ; then
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# If channel is missing, do nothing
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exit 0
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fi
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echo "Setting hood name: $hood (ID $hoodid)"
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uci set "system.@system[0].hood=$hood"
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uci set "system.@system[0].hoodid=$hoodid"
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uci commit system
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for radio in $(wifiListRadio); do
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freq="$(wifiGetFreq $radio)"
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if [ "$freq" = "5" ]; then
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uci set wireless.${radio}.channel="$chan5ghz"
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mesh_type="$mesh_type5"
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elif [ "$freq" = "2" ]; then
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uci set wireless.${radio}.channel="$chan2ghz"
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mesh_type="$mesh_type2"
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fi
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# Disable wXconfigap
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uci set wireless.w${freq}configap.disabled='1'
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# Configure wXap
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uci set wireless.w${freq}ap.ssid="$essid"
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uci set wireless.w${freq}ap.disabled='0'
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# Configure 802.11s mesh if type = "802.11s"
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if [ "$mesh_type" = "802.11s" ]; then
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uci set wireless.w${freq}mesh.mode='mesh'
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uci -q del wireless.w${freq}mesh.bssid
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uci -q del wireless.w${freq}mesh.ssid
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uci -q del wireless.w${freq}mesh.mcast_rate
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uci set wireless.w${freq}mesh.mesh_id="$mesh_id"
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uci set wireless.w${freq}mesh.mesh_fwding='0'
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uci set wireless.w${freq}mesh.disabled='0'
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# Configure IBSS mesh if type = "ibss"
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elif [ "$mesh_type" = "ibss" ]; then
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uci set wireless.w${freq}mesh.mode='adhoc'
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uci -q del wireless.w${freq}mesh.mesh_id
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uci -q del wireless.w${freq}mesh.mesh_fwding
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uci set wireless.w${freq}mesh.bssid="$mesh_bssid"
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uci set wireless.w${freq}mesh.ssid="$mesh_essid"
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uci set wireless.w${freq}mesh.mcast_rate='6000'
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uci set wireless.w${freq}mesh.disabled='0'
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# Disable mesh by setting no mesh_type
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else
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uci set wireless.w${freq}mesh.disabled='1'
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fi
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done
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uci commit wireless
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echo "Reloading wifi"
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reload_config
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oldntp="$(uci -q get system.ntp.server)"
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newntp="${ntpip}" # requires routable address, no link-local
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[ "$newntp" = "$oldntp" ] || setTimeserver "${newntp}" # only rewrite if changed
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# copy the file to webroot so that other mesh routers can download it;
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# copy only after all other steps so IF can be reentered if something goes wrong
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cp "$hoodfiletmp" "$hoodfileref"
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# This is a workaround to enable alfred on devices which do not see a configap during initial setup
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/etc/init.d/alfred restart
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else
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echo "We have no new file. We do nothing. We try it again in 5 minutes...";
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fi
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# and now we get to vpn-select script and load VPNs directly from /tmp/keyxchangev2data
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if hasInternet ; then
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/usr/sbin/vpn-select "$hoodfiletmp"
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else
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/usr/sbin/vpn-stop
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fi
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# now we load the prefix from the hoodfile and set this to br-client
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json_select network
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json_get_var prefix ula_prefix
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# Set $prefix::MAC as IP
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if [ -n "$prefix" ] ; then
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prefix="$(echo "$prefix" | sed -e 's,\\,,')"
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mac="$(cat "/sys/class/net/br-client/address")"
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addr="$(ipMacAssemble "$prefix" "$mac")"
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addr="$(ipTidyColon "$addr")"
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addr_eui="$(ipEUIAssemble "$prefix" "$mac")"
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addr_eui="$(ipTidyColon "$addr_eui")"
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for ip in $(ip -6 addr show dev br-client | grep inet6 | grep -v -e " $addr" -e " $addr_eui" -e " fe80::" -e " fdff::" | cut -f6 -d " "); do
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ip -6 addr del "$ip" dev br-client
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done
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if ! ( ip -6 addr show dev br-client | grep -q "$addr" ) ; then
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ip -6 addr add "$addr" dev br-client
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echo "Set ULA address to br-client: $addr"
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else
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echo "Address already set."
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fi
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# Set $prefix::link-local as IP
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if ! ( ip -6 addr show dev br-client | grep -q "$addr_eui" ) ; then
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ip -6 addr add "$addr_eui" dev br-client
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echo "Set ULA EUI-64 address to br-client: $addr_eui"
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else
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echo "Address already set."
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fi
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if ! ( ip -6 route show dev br-client | grep -q "fc00::" ) ; then
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ip -6 route add fc00::/7 via fe80::1 dev br-client
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echo "Set ULA route to br-client."
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else
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echo "Route already set."
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fi
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fi
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json_select ".." # back to root
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else
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echo "We haven't got a file. We do nothing. We try it again in 5 minutes...";
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exit 0
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fi
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# Hidden AP check
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if [ -s "$hoodfilewww" ] && isGatewayAvailable; then
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needwifi="0"
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for radio in $(wifiListRadio); do
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freq="$(wifiGetFreq $radio)"
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# Break: wXconfig is up
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[ "$(uci get "wireless.w${freq}configap.disabled")" = "0" ] && continue
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# Break: No mesh interface
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[ "$(uci get "wireless.w${freq}mesh.disabled")" = "0" ] || continue
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# Enable configap
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uci set wireless.w${freq}configap.disabled='0'
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uci commit wireless
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needwifi="1"
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done
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if [ "$needwifi" = "1" ]; then
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reload_config
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sleep 10
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fi
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fi
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