forked from freifunk-franken/firmware
242 lines
7.4 KiB
Bash
Executable File
242 lines
7.4 KiB
Bash
Executable File
#!/bin/sh
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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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hoodlocal=/etc/hoodfile
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rm -f "$hoodfile"
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# Gatewaycheck function
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isGatewayAvailable() {
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if [ "$(batctl gwl | wc -l)" -gt 2 ]; 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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test_ipv4_host1="keyserver.freifunk-franken.de" # Freifunk-Franken keyserver
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test_ipv4_host2="8.8.8.8" # Google DNS
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test_ipv6_host1="heise.de" # heise Zeitschriftenverlag
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if ping -w5 -c3 "$test_ipv4_host1" &>/dev/null ||
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ping -w5 -c3 "$test_ipv4_host2" &>/dev/null ||
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ping6 -w5 -c3 "$test_ipv6_host1" &>/dev/null ; then
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return 0
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fi
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return 1
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}
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# Hidden AP check
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if [ -s "$hoodfilecopy" ] && isGatewayAvailable ; then
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needwifi="0"
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for radio in $(uci show wireless | sed -n 's,.*\.\([a-z0-9]*\)=wifi-device,\1,p'); do
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freq="2"
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if [ "$(uci get "wireless.${radio}.channel")" -gt "14" ]; then
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freq="5"
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fi
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# Break: wXconfig is up
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uci -q get "wireless.w${freq}configap" > /dev/null && continue
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# Break: No mesh interface
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(uci -q get "wireless.w${freq}mesh" > /dev/null || uci -q get "wireless.w${freq}ibss" > /dev/null) || continue
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# Create configap
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iface="configap$freq"
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uci set network.${iface}=interface
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uci set network.${iface}.proto='static'
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uci set network.${iface}.ip6addr='fe80::1/64'
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uci commit network
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reload_config
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if ! wifiAddAP "$radio" "config.franken.freifunk.net" "$iface" "configap" "1"; then
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echo "Can't add Config interface on $radio."
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exit 1
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fi
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needwifi="1"
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done
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if [ "$needwifi" = "1" ] ; then
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wifi
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sleep 10
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fi
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fi
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if [ -s "$hoodlocal" ]; then
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hoodfile="$hoodlocal"
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echo "Use local hood file"
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else
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# if we have Internet, we download the Hoodfile from the keyxchangev2
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if hasInternet ; then
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getKeyserverHoodfile "$hoodfile"
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#if no Internet, we connect to the hidden AP and download the file from another Node in range
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else
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# connect to wireless hidden ap here and download the json File from the nearest router
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# Only do that, when we have no gateway in range. If the Uplinkrouter changed the hood, we lost the GW and do this automatically again, I think! Nice idea?
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if ! isGatewayAvailable ; then
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#now we haven't a gateway in Range, we search for a hidden AP to get a keyxchangev2data file!
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#first we delete all wifi settings
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rm -f "$hoodfilecopy" # delete this, so interfaces are recreated if reconnect with unchanged hood file takes place
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uci -q del "system.@system[0].hood"
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uci -q 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 "$hoodfile" || getWirelessHoodfile "$hoodfile"
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else
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echo "We have a Gateway in Range, we load the keyxchangev2data from fe80::1"
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getGatewayHoodfile "$hoodfile"
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fi
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fi
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fi
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if [ -s "$hoodfile" ]; 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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catnew="$(cat "$hoodfile" | sed 's/"timestamp”: *"[0-9]*"/"timestamp":0/')"
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catold="$(cat "$hoodfilecopy" 2>/dev/null | sed 's/"timestamp”: *"[0-9]*"/"timestamp":0/')"
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sumnew=$(echo "$catnew" | sha256sum | cut -f1 -d " ")
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sumold=$(echo "$catold" | sha256sum | cut -f1 -d " ")
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json_load "$(cat "$hoodfile")"
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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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[ -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 ! ([ -n "$chan2ghz" ] && [ -n "$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: $hood"
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uci -q set "system.@system[0].hood=$hood"
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uci -q commit system
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reload_config
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if ! wifiDelIface; then
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echo "Can't delete current wifi setup"
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exit 1
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fi
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for phy in $(iw phy | awk '/^Wiphy/{ print $2 }'); do
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radio="$(wifiAddPhyCond "$phy" "2" "$chan2ghz")"
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radio5="$(wifiAddPhyCond "$phy" "5" "$chan5ghz")"
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[ -n "$radio5" ] && radio="$radio5"
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if ! wifiAddAP "$radio" "$essid" "mesh" "ap" "0"; then
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echo "Can't add AP interface on $radio."
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exit 1
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fi
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# add 802.11s mesh if type == "802.11s"
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if ( [ -n "$radio5" ] && [ "$mesh_type5" == "802.11s" ] ) || [ "$mesh_type2" == "802.11s" ]; then
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if ! wifiAddMesh "$radio" "$mesh_id"; then
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echo "Can't add Mesh interface on $radio."
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exit 1
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fi
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fi
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# add IBSS mesh if type == "ibss"
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if ( [ -n "$radio5" ] && [ "$mesh_type5" == "ibss" ] ) || [ "$mesh_type2" == "ibss" ]; then
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if ! wifiAddAdHocMesh "$radio" "$mesh_essid" "$mesh_bssid"; then
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echo "Can't add AdHocMesh interface on $radio."
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exit 1
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fi
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fi
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done
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echo "Loading wifi"
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wifi
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oldntp="$(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 "$hoodfile" "$hoodfilecopy"
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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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sh /usr/sbin/vpn-select
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else
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sh /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-mesh
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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="$(cat "/sys/class/net/br-mesh/address")"
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addr="$(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-mesh | 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-mesh
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done
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if ! ( ip -6 addr show dev br-mesh | grep -q "$addr" ) ; then
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ip -6 addr add "$addr" dev br-mesh
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echo "Set ULA address to br-mesh: $addr"
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else
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echo "Address already set."
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fi
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# Set $prefix::link-local as IP
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if ! ( ip -6 addr show dev br-mesh | grep -q "$addr_eui" ) ; then
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ip -6 addr add "$addr_eui" dev br-mesh
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echo "Set ULA EUI-64 address to br-mesh: $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-mesh | grep -q "fc00::" ) ; then
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ip -6 route add fc00::/7 via fe80::1 dev br-mesh
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echo "Set ULA route to br-mesh."
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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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