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README: drop sudo explanation

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Nils Schneider 2015-04-02 18:52:00 +02:00
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README.md
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@ -2,33 +2,21 @@
[![Build Status](https://travis-ci.org/ffnord/ffmap-backend.svg?branch=master)](https://travis-ci.org/ffnord/ffmap-backend)
ffmap-backend gathers information on the batman network by invoking
ffmap-backend gathers information on the batman network by invoking :
* batctl,
* batctl (might require root),
* alfred-json 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.
In order to use alfred-json and batadv-vis make sure the user running this
backend is allowed to access alfred's socket.
The output will be written to a directory (`-d output`).
Run `backend.py --help` for a quick overview of all available options.
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
For the script's regular execution add the following to the crontab:
<pre>
* * * * * /path/to/ffmap-backend/backend.py -d /path/to/output -a /path/to/aliases.json --vpn ae:7f:58:7d:6c:2a --vpn d2:d0:93:63:f7:da
</pre>