forked from freifunk-franken/firmware
188 lines
5.6 KiB
Bash
Executable File
188 lines
5.6 KiB
Bash
Executable File
#!/bin/sh
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. /usr/share/libubox/jshn.sh
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. /lib/functions/fff/wireless
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. /lib/functions/fff/timeserver
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rm -f /tmp/keyxchangev2data
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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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chan2ghz="1"
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chan5ghz="36"
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# Hidden AP check
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if [ -f /tmp/hiddenapflag ]; then
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if isGatewayAvailable ; then
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uci set network.configap=interface
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uci set network.configap.proto='static'
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uci set network.configap.ip6addr='fe80::1/64'
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uci commit network
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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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if ! wifiAddAP "$radio" "config.franken.freifunk.net" "configap" "configap" "1"; then
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echo "Can't add Config interface on $radio."
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exit 1
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fi
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done
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wifi
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fi
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rm /tmp/hiddenapflag
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fi
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lat=$(uci -q get system.@system[0].latitude)
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long=$(uci -q get system.@system[0].longitude)
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# if we have Internet, we download the Hoodfile from the keyxchangev2
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if hasInternet ; then
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wget -T15 -t5 "http://keyserver.freifunk-franken.de/v2/?lat=$lat&long=$long" -O /tmp/keyxchangev2data
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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 /www/public/keyxchangev2data # delete this, so interfaces are recreated if reconnect with unchanged hood file takes place
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if ! wifiDelAll; 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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#now we look for phy and add this
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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="$radio5"
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#and here we add the station
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if ! wifiAddSta "$radio" "config.franken.freifunk.net" "configSta"; then
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echo "Can't add Sta interface on $radio."
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exit 1
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else
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uci -q set network.configSta=interface
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uci -q set network.configSta.proto='static'
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uci -q commit network
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fi
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done
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wifi
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# wait a moment to start the interface
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sleep 10;
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# and here we can download the Hoodfile from the other node
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wget -T15 -t5 "http://[fe80::1%w2sta]/keyxchangev2data" -O /tmp/keyxchangev2data
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else
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echo "We have a Gateway in Range, we load the keyxchangev2data from fe80::1"
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wget -T15 -t5 "http://[fe80::1%br-mesh]:2342/keyxchangev2data" -O /tmp/keyxchangev2data
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fi
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fi
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if [ -s /tmp/keyxchangev2data ]; then
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# we get a json file in this format:
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# https://pw.freifunk-franken.de/patch/205/
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# but without signature, every hood file we get is valid!
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catnew="$(cat /tmp/keyxchangev2data | sed 's/"timestamp":[0-9]*/"timestamp":0/')"
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catold="$(cat /www/public/keyxchangev2data 2>/dev/null | sed 's/"timestamp":[0-9]*/"timestamp":0/')"
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sumnew=$(echo "$catnew" | sha256sum | cut -f1 -d " ")
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sumold=$(echo "$catold" | sha256sum | cut -f1 -d " ")
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json_load "$(cat /tmp/keyxchangev2data)"
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if [ "$sumnew" != "$sumold" ]; then
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echo "New file detect, 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 mesh_bssid mesh_bssid
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json_get_var mesh_essid mesh_essid
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json_get_var essid essid
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json_get_var ntpip ntp_ip
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# i think the next things we don't active this in the first version! we can do it later
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#json_get_var channel2 channel2
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#json_get_var mode2 mode2
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#json_get_var type2 type2
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#json_get_var channel5 channel5
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#json_get_var mode5 mode5
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#json_get_var type5 type5
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#json_get_var protocol protocol
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json_select ".." # back to root
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echo "Setting hood name: $hood"
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uci set "system.@system[0].hood=$hood"
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if ! wifiDelAll; 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 $radio."
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exit 1
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fi
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# here we set a bit for add hidden AP
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touch /tmp/hiddenapflag
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if ! wifiAddAdHocMesh "$radio" "$mesh_essid" "$mesh_bssid"; then
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echo "Can't add AP interface on $radio."
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exit 1
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fi
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done
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echo "Loading wifi"
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wifi
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oldntp="$(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 Meshrouter 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 /tmp/keyxchangev2data /www/public/
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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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fi
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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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