54 lines
1.9 KiB
Markdown
54 lines
1.9 KiB
Markdown
# Data for Freifunk Map, Graph and Node List
|
|
|
|
ffmap-backend gathers information on the batman network by invoking
|
|
batctl
|
|
and
|
|
batadv-vis
|
|
as root (via sudo) and has this information placed into a target directory
|
|
as the file "nodes.json" and also updates the directory "nodes" with graphical
|
|
representations of uptimes and the number of clients connecting.
|
|
|
|
The target directory is suggested to host all information for interpreting those
|
|
node descriptions, e.g. as provided by https://github.com/ffnord/ffmap-d3.git .
|
|
When executed without root privileges, we suggest to grant sudo permissions
|
|
within wrappers of those binaries, so no further changes are required in other
|
|
scripts:
|
|
|
|
<pre>
|
|
$ cat <<EOCAT > $HOME/batctl
|
|
#!/bin/sh
|
|
exec sudo /usr/sbin/batctl $*
|
|
EOCAT
|
|
</pre>
|
|
|
|
and analogously for batadv-vis. The entry for /etc/sudoers could be
|
|
whateveruser ALL=(ALL:ALL) NOPASSWD: /usr/sbin/batctl,/usr/sbin/batadv-vis,/usr/sbin/alfred-json
|
|
|
|
The destination directory can be made directly available through apache:
|
|
<pre>
|
|
$ cat /etc/apache2/site-enabled/000-default
|
|
...
|
|
<Directory /home/whateverusername/www/>
|
|
Options Indexes FollowSymLinks MultiViews
|
|
AllowOverride None
|
|
Order allow,deny
|
|
allow from all
|
|
</Directory>
|
|
...
|
|
|
|
$ cat /etc/apache2/conf.d/freifunk
|
|
Alias /map /home/ffmap/www/
|
|
Alias /firmware /home/freifunk/autoupdates/
|
|
</pre>
|
|
|
|
To execute, run
|
|
python3 -mffmap.run --input-alfred --input-badadv --output-d3json ../www/nodes.json
|
|
The script expects above described sudo-wrappers in the $HOME directory of the user executing
|
|
the script. If those are not available, an error will occurr if not executed as root. Also,
|
|
the tool realpath optionally allows to execute the script from anywhere in the directory tree.
|
|
|
|
For the script's regular execution add the following to the crontab:
|
|
<pre>
|
|
*/5 * * * * python3 -mffmap.run --input-alfred --input-badadv --output-d3json /home/ffmap/www/nodes.json
|
|
</pre>
|