[RFC,3/3] Load Wifi Settings

If we have internet we connect directly to the keyxchangev2 and load
the settings
if we haven't internet we try to connect to a hidden AP as station and
load the settings from the router
after set the new wireless settings we copy back the 60-fff-wireless
uci default and reboot the node

update in v2
 - add hood information in WebRoot
 - update later the format of the Hooddata
 - add a litte bit more comments

Signed-off-by: Christian Dresel <fff@chrisi01.de>
---
 .../fff/fff-vpn-select/files/usr/sbin/vpn-select   | 88 +++++++++++++++++++++-
 .../fff-wireless/files/lib/functions/fff/wireless  | 29 +++++++
 2 files changed, 115 insertions(+), 2 deletions(-)

hi

das Patch (nur 3/3) zieh ich mal vollständig zurück, braucht sich keiner
mehr angucken und kann auch ausm Patchwork komplett (alle Versionen)
entfernt werden. Ich hab ne viel bessere Idee und werde das nochmal
grundlegend anders angehen. Umsetzung dauert aber noch ein paar Tage.

[RFC v3 1/3] Update Batman to compat15 & [RFC v2 2/3] Add hidden AP
bleiben davon unberührt.

mfg

Christian

On 20.08.2017 17:30, Christian Dresel wrote:
> If we have internet we connect directly to the keyxchangev2 and load
> the settings
> if we haven't internet we try to connect to a hidden AP as station and
> load the settings from the router
> after set the new wireless settings we copy back the 60-fff-wireless
> uci default and reboot the node
> 
> update in v2
>  - add hood information in WebRoot
>  - update later the format of the Hooddata
>  - add a litte bit more comments
> 
> Signed-off-by: Christian Dresel <fff@chrisi01.de>
> ---
>  .../fff/fff-vpn-select/files/usr/sbin/vpn-select   | 88 +++++++++++++++++++++-
>  .../fff-wireless/files/lib/functions/fff/wireless  | 29 +++++++
>  2 files changed, 115 insertions(+), 2 deletions(-)
> 
> diff --git a/src/packages/fff/fff-vpn-select/files/usr/sbin/vpn-select b/src/packages/fff/fff-vpn-select/files/usr/sbin/vpn-select
> index c3d003f..4c03a23 100755
> --- a/src/packages/fff/fff-vpn-select/files/usr/sbin/vpn-select
> +++ b/src/packages/fff/fff-vpn-select/files/usr/sbin/vpn-select
> @@ -1,7 +1,45 @@
>  #!/bin/sh
>  
> +. /lib/functions/fff/wireless
> +
>  test -f /tmp/started || exit
>  
> +set_wifi() {
> +wget -T15 "http://keyserver.freifunk-franken.de/${project}/wireless.php?mac=$mac" -O /tmp/wireless_${project}_output
> +$NEWSETTINGS=$(cat /tmp/wireless_${project}_output)
> +#check the settings the same as set if not set it new and reboot the Node if it the same do nothing
> +#we get the settings in this format from keyxchangev2: ESSID_AP;ESSID_MESH;BSSID_MESH
> +ESSID_AP_AKT=$(cat /etc/community.cfg  | grep ESSID_AP | cut -d "=" -f 2)
> +ESSID_MESH_AKT=$(cat /etc/community.cfg  | grep ESSID_MESH | cut -d "=" -f 2)
> +BSSID_MESH_AKT=$(cat /etc/community.cfg  | grep BSSID_MESH | cut -d "=" -f 2)
> +CHECKSAME="$ESSID_AP_AKT;$ESSID_MESH_AKT;$BSSID_MESH_AKT" #we change this later to have the same format as the decentralized KeyXchange
> +if [ "$CHECKSAME" == "$NEWSETTINGS" ]; then
> +	echo "We have same settings and do nothing"
> +else
> +	#here we must write the config file new and reboot after
> +	ESSID_AP_NEW=$(cat /tmp/wireless_${project}_output | cut -d ";" -f 0)
> +	ESSID_MESH_NEW=$(cat /tmp/wireless_${project}_output | cut -d ";" -f 1)
> +	BSSID_MESH_NEW=$(cat /tmp/wireless_${project}_output | cut -d ";" -f 2)
> +	rm /etc/community.cfg
> +	touch /etc/community.cfg
> +	echo 'BATMAN_CHANNEL=1' >> /etc/community.cfg
> +	echo 'BATMAN_CHANNEL_5GHZ=36' >> /etc/community.cfg
> +	echo 'ESSID_AP=$ESSID_AP_NEW' >> /etc/community.cfg
> +	echo 'ESSID_MESH=$ESSID_MESH_NEW' >> /etc/community.cfg
> +	echo 'BSSID_MESH=$BSSID_MESH_NEW' >> /etc/community.cfg
> +	echo 'VPN_PROJECT=fff' >> /etc/community.cfg
> +	echo 'NTPD_IP=fe80::ff:feee:1%br-mesh' >> /etc/community.cfg
> +	echo 'UPGRADE_PATH=http://[fe80::ff:feee:1%br-mesh]/dev/firmware/current' >> /etc/community.cfg
> +	#copy my own Hood information to webroot that can download a Meshrouter
> +	rm /www/public/hoodinfo.txt
> +	echo "$NEWSETTINGS" < /www/public/hoodinfo.txt
> +	#copy the 60-fff-wireless from rom to overlayfs to set the new settings after reboot
> +	cp /rom/etc/uci-defaults/60-fff-wireless /etc/uci-defaults/60-fff-wireless
> +	#and now reboot the Router to set the new settings
> +	reboot
> +fi
> +}
> +
>  make_config() {
>  # remove old config
>  >/etc/config/tunneldigger
> @@ -35,6 +73,8 @@ for file in $filecounts; do
>          rm /etc/fastd/${project}/peers/$file
>      fi
>  done
> +#now we load the wireless Information from the keyxchangev2:
> +set_wifi
>  }
>  
>  # main
> @@ -43,9 +83,10 @@ test_ipv4_host2="8.8.8.8"        # Google DNS
>  test_ipv6_host1="heise.de"       # heise Zeitschriftenverlag
>  
>  # Only do something when the router has internet connection
> -if ping -w5 -c3 "$test_ipv4_host1" &>/dev/null ||
> +if (ping -w5 -c3 "$test_ipv4_host1" &>/dev/null ||
>     ping -w5 -c3 "$test_ipv4_host2" &>/dev/null ||
> -   ping6 -w5 -c3 "$test_ipv6_host1" &>/dev/null; then
> +   ping6 -w5 -c3 "$test_ipv6_host1" &>/dev/null) &&
> +   [ $(cat /tmp/novpn) != "1" ]; then
>  
>      # set some vars
>      . /etc/community.cfg
> @@ -86,4 +127,47 @@ if ping -w5 -c3 "$test_ipv4_host1" &>/dev/null ||
>          fi
>  
>      fi
> +else
> +	# now we check to have Batmangateways in range
> +	if [ "$(batctl gwl | grep "no gateway")" ]; then
> +		#now we haven't a gateway in Range, we search for a hidden AP to get Internet and reach the KeyXchangev2 
> +		#set this to not open a vpn because we have in the next step Internet
> +		echo "1" > /tmp/novpn
> +		#first we delete all wifi settings
> +		if ! wifiDelAll; then
> +			echo "Can't delete current wifi setup"
> +			exit 1
> +		fi
> +		#now we look for phy and add this
> +		for phy in $(iw phy | awk '/^Wiphy/{ print $2 }'); do
> +			if iw phy "$phy" info | grep -q -m1 "2... MHz"; then
> +				echo "$phy is 2.4 GHz"
> +				radio=$(wifiAddPhy "$phy" "$BATMAN_CHANNEL")
> +				if [ -z "$radio" ]; then
> +					echo "Can't create radio for $phy"
> +					exit 1
> +				fi
> +			fi
> +			if iw phy "$phy" info | grep -q -m1 "5... MHz"; then
> +				echo "$phy is 5 GHz"
> +				radio=$(wifiAddPhy "$phy" "$BATMAN_CHANNEL_5GHZ")
> +				if [ -z "$radio" ]; then
> +					echo "Can't create radio for $phy"
> +					exit 1
> +				fi
> +			fi
> +			#and here we add the station
> +			if ! wifiAddSta "$radio" "config.franken.freifunk.net"; then
> +				echo "Can't add Sta interface on $radio."
> +				exit 1
> +			fi
> +			#here we must set a fix ip adress on the new wifi interface! come later!
> +		done
> +		#and here we can check to reach the keyxchangev2
> +
> +		set_wifi
> +	else
> +		echo "we have a gateway in range and do nothing"
> +	fi
> +
>  fi
> diff --git a/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless b/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless
> index 8c990ce..1d1d248 100644
> --- a/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless
> +++ b/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless
> @@ -117,4 +117,33 @@ wifiAddAP() {
>  	echo "${iface}"
>  }
>  
> +wifiAddSta() {
> +	if [ $# -ne "2" ]
> +	then
> +		echo "Usage: wifiAddSta <radio> <essid>"
> +		return 1
> +	fi
> +
> +	local radio=$1
> +	local essid=$2
> +
> +	local channel=$(uci get "wireless.${radio}.channel")
> +	local iface="w2Sta"
> +	if [ "$channel" -gt "14" ]; then
> +		iface="w5Sta"
> +	fi
> +	uci batch <<-__EOF__
> +		set wireless.${iface}='wifi-iface'
> +		set wireless.${iface}.device='${radio}'
> +		set wireless.${iface}.network='StaWiFi'
> +		set wireless.${iface}.ifname='${iface}'
> +		set wireless.${iface}.mode='sta'
> +		set wireless.${iface}.ssid='${essid}'
> +
> +		commit wireless
> +	__EOF__
> +
> +	echo "${iface}"
> +}
> +
>  # vim: set noexpandtab:tabstop=4
>