Mapserver database and server side refactoring
The goal of this task is to push forward the development of Nodeshot in order to make it mature, stable and more flexible. The final goal is to promote this software so other wireless communities around the world can start using it and participate in the development. At the moment this is only partially possible because the software is not very flexible and has been developed to satisfy our needs only.
A joint effort from several wireless communities is being done in order to use a common database scheme and make a new flexible and pluggable map-server. This could be the first step in that direction.
- Integration with django's user management framework (django.contrib.auth.user) and permission system
- Possibility for admins and users to login in the frontend and be able to perform different actions depending on their privileges (eg: some info might be configurable to be seen by a certain group of users only)
- Refactor the database model so to become compatible with the common node DB project proposed in Athens at the Wireless Battle of the Mesh v5
- Better DB abstraction, eg: differentiation between different types of devices (antennas, servers, others)
- Improve caching
- History for all the changes in the database
- Better notifications, 2 examples:
- Possibility for non-admins to receive notifications when new potential nodes are added
- Possibility to be notified if new potential nodes are added in a specified distance range (eg: notify me if a new potential node is added in a range of 10km)
- RESTFUL api in json and or xml to retrieve data from the database
Level 4: Web developer
Technologies: Python, Relational Databases
Frameworks used: Django
Map-server Frontend improvements
The goal of this task is to improve the user experience of Nodeshot, our community map-server. We'd like to develop a new, better graphical user interface and to add new useful functionalities.
- New graphical user interface, easy to use and understand
- Easy registration and login
- New overviews with IP addresses
- Visual traceroute
- Possibility to use placeholders for distance calculations on the fly
- Elevation chart and Fresnel Zone calculation
- Email app to ease the communication with node owners (possibility to send an email to all the nodes, possibility to send an email to only a group of nodes)
- Integration with Agumented Reality for mobile phones
Level 4: Front-end developer
Frameworks used: Django, jQuery
DNS Management App for wireless communities
We implemented our own DNS system in our community which is integrated with the map-server. At the moment the integration is more like a temporary hack and not a piece of good software. We would like to separate this functionality and make it an indipendent application that can be integrated easily into the map-server but also run in standalone mode. The Goal is to make a system which calculates the hostnames of the nodes automatically but also gives the possibility for community networkers to manage their own DNS records indipendently (each node owner should be able to change his/her hostnames or add new ones).
- Backend web interface for administration
- Frontend application in which each node owner can manage hostnames of his/her node
- Pluggable into Nodeshot (integration with Nodeshot)
- Integration with Opensource DNS software (PowerDNS, myDNS, ecc)
Frameworks: Django, jQuery
Distributed node monitoring and management application
We use different monitoring systems but we are not completely satisfied with any of them.
Problems we face:
- Different monitoring systems are hard to maintain. When we change anything in our network we have to remember to change also the information in all the systems we use
- One of the systems is proprietary, closed source and it works only with a very limited set of devices
- We need to be able to diagnose problems quickly with a cross check on different protocols (SNMP, OLSR, BATMAN)
- We need more flexibility
- We need a decentralized system
- We want it Open Source
- We need network usage and traffic graphs
- Develop a new pluggable distributed app for the map-server which can be deployed in different parts of the network which automatize the synchronization of the operations and eases our pain in the management of our network.
- Maybe instead of reinventing the wheel we could integrate one of the existing open source monitoring applications with our map-server, the integration should take care of synchronizing the several systems in use.
Level 4: Web Developer
Frameworks: Django, jQuery
Robust OpenWrt based firmware
To build our community network we use a lot of embedded devices, they often have closed source firmware that offer good performance and services but they are done in a way that put us in a vendor lock-in.
To avoid that vendor lock-in we want to use OpenWrt but it miss some necessary features that we want to implement
Make it manageable trough NodeShot distributed management plug in
- Improve monitoring support ( more information trough SNMP like links dBm, rate, traffic...)
Make remote configuration easy ( It will use SSH, but the manager will see only interesting option on NodeShot management interface )
- Make it modular so we can eventually support more routing scheme and plug in
- Make it completely auto-configuring in case of missing management
Level 4: Semi-Professional
Many people want to share files in our community network but they step into some problems:
To solve these issues we need to:
Level 4: Semi-Professional
Videoconferencing suitable for Mobile Phone and Mesh Networks (MPMN )
Many people want to use VOIP in our mesh network but they step into some problems:
- Existent major videoconferencing solutions depend on the Internet ( like skype or gtalk )
- Most of major existent videoconferencing solutions have not a good mobile phone integration ( like skype )
- Most of major existent videoconferencing solutions don't have support for ipv6 ( our network is primarily ipv6 )
- Internet bandwidth on our network is going towards exhaustion
- They doen't want to learn to use another VOIP app
To solve these issues we decided to implement Videoconferencing suitable for Mobile Phone and Mesh Networks:
- Create a good app, fully integrated in android/iphone/(other?) addressbook ( call someone trough MMPN must me simple as call him with phone number without learn to use other apps or have different gui).
- Separate MMPN backend from addressbook integration ( like telepathy framework do on desktop ).
- Make the backend extensible for newer protocols
- Offer good privacy with encryption
- Preferable completely serverless protocol such as retroshare
Level 4: Semi-Professional
Collaborative Music Composition
This project aims to realize a web-based social application for music composition.
It will allow the creation of jam session (non real-time) in this way: users will upload tracks (e.g. piano track) and then they can merge them with other tracks (e.g. bass track) that other users pushed in the system. Users can play a bunch of selected tracks creating a composition (e.g. bass+piano+vocal).
Using the linux audio plugin and a proper backend engine, they can also apply effects on tracks.
Conversely, if a user doesn't like an instrument track of a song, he can create his own version by substituting it with her own track.
It will use a web framework such as Django to manage users, file upload and dynamic content.
On the backend it will handle files using linux programs. It could add effects (such as reverb or delay) on tracks by interfacing with a LADSA compatible command line script. In this way we will reuse the tons of linux audio plugin.
Every track is under a kind version control (git or whatever) so to keep track of branches and merges. Git seems not suitable for http://stackoverflow.com/questions/984707/what-are-the-git-limits.
- Given the heavy burden on the server that the server should manage, a cloud solution can be investigated. For instance we can use Ubuntu Orchestra and Juju.
Improve the OLSRd mDNS plug-in
The OLSRd mDNS plug-in allows the distribution of mDNS (multicast DNS i.e. avahi/bonjour/zeroconf) messages over an OLSR network. This is substantially achieved by sniffing for mDNS packets on the final users' networks (usually HNA networks), encapsulating them inside OLSR protocol messages, exploiting OLSR native message transfer mechanisms, and decapsulating the mDNS packets at all the other end users' networks.
The plug-in has been developed by ninux.org members, however we would like to address some important issues that have arised during deployment:
loops. If two mDNS plug-in enabled OLSR routers are attached to the same HNA network, then mDNS packets will loop back and forth between the two, also flooding the whole OLSR network. For the moment the temporary solution to this problem is to enable the plug-in on one router at a time on the same HNA. A real solution to the problem would be the following:
- usually mDNS packets have a TTL != 1, so:
- capture only mDNS packets with TTL != 1
- when decapsulating mDNS packets, set TTL = 1
- where TTL is the IP Time-to-live field
capture rate. mDNS packets are incapsulated into OLSR messages, which in turn are contained in OLSR packets that are sent at the wireless basic rate (i.e. 1 or 2 Mbps) over the whole network. Thus a big amount of mDNS captured packets in a small time can slow down the whole network. A solution to this is to add a plug-in configuration option to set the maximum packet capture rate.
Programming Languages: C
Improve the ninuxoo search engine
We have started the development of a community-network-wide open-source search engine called ninuxoo. Written in Python, it is formed by a samba and ftp share crawler and of a cgi-based website, with a common database. We would like to enhance it by adding some features:
Programming Languages: python, mysql
Maturing external application APIs and introducing Event managing support for DIASPORA* Distributed Social Network
Diaspora is a free and open source application implementing a distributed social networking service which is made out of “pods” (i.e. servers), which in contrast with the centralized approach can be run directly from the users who can have full control of their online identity thus allowing information not to be controlled by a single party. Furthermore communications and content sharing between users are secured by the Salmon protocol.
The project is still inching towards a first beta release and at the moment lacks a mature API set which would be vital for the growth of the project itself as it would allow the development of external applications by independent developers who want to exploit the power and the possibilities provided by such platform. As of now, only the draft of a preliminary version of the basic APIs is available (Reference ). This project aims at developing a REST application API set that will provide developers with endpoints to the core functionalities of the social network, allowing them to manage the social graph with objects representing the main 4 Diaspora resources (People, Aspects, Posts, and Comments) and the connections between them (e.g., friend relationships, shared content, and photos).
Furthermore, an external application that will interoperate with D* will be developed on it as a proof of concept. This application will aim at providing Event managing support for the users as an external service that will allow the community to create and manage events, invite other users to them and publish related content.
Description: A new user that wants to join a Wireless Community Network is required to install a wireless device on his roof and to detect near stations to connect to. This can be arbitrarily difficult in a big city environment due to line of sight problems and lack of precise information about geography. In this scenario we want to develop an iPhone application that helps, gathering information (coordinates, direction,..) from GPS and compass hardware present in almost every mobile system and the information gathered from a mapserver system containing the database of all the nodes, to easily find and then point a node where we want to connect all in an augmented reality system. To do so the application will exchange information with a mapserver both to obtain information of the nodes and also to insert his own position in to the database. The app wants also let know to as much people as possibile about wireless community through the app store system that this devices have built-in.
Objective-C, Google Maps API, MySQL, SOAP
PGP cryptography plugin for Jitsi
http://jitsi.org/ is a promising IM software with builtin support for audio/video calls and conferences, desktop share, remote control and OTR cryptography.
We already use PGP to encrypt sensitive emails that contain login information to critical parts of our network, we developed a good web of trust and for this reason we would prefer PGP to OTR for our sensitive communications.
Since Jitsi is pluggable, this feature could be added as an additional plugin.
Technologies Java, OpenPGP
Suppose you are the only one user of a large wireless mesh network. If you had several Internet gateway, how could use use all the bandwidth of all those gateway in order to download your files faster? Build the solution!
Our idea is to realize a module that take packets and send them to internet using multiple gateway via the Loose Source Routing option of the IP packet. With that option you can force packets to pass to one or serveral different router! Conversely nowadays packets usually do the same path to reach a destination, so if you are alone on a WCN with several internet gateway, right now you are doomed to use only the bandwidth of one gateway, typically the nearest one. Whereas the iptables target is not yet supported to put the loose source routing option, this option is supported by the Linux kernel.
Ninux's nodes are installed on the privete roofs. Electronics devices (Poe power supply, ethernet switch etc...) are in a waterproof box closed to antennas mast. Due monitoring harware integrity against unauthorized access at the box,cable cutting and vandalism, we need a utility running on very low cost SoC (requirement: TCP Stack, Ethernet port and some GPIO for the sensor) integreted with our network monitoring.
- Indentify the platform: cheap, simple to found in electronics stores,support Open Source (uclinux, Arduino etc...), Ethernet interface, accessible GPIO (at least 4), small size.
- The sensors to manage: door sensor, cable cutting sensor, proximity sensor, shake sensor via GPIO.
- Interfacing data with SNMP protocol.
- Develop a plugin for Nagios and/or AirOS for manage the alarms.
Background: lots of cheap but good enough "plug computers" are available; they are perfect for home servers, but there is nothing that will fit Average Joe.
The idea is to do a little step towards the goal of realizing it: not a complete distribution that will fit every scenario, but a simple way to manage some service and configuration files through a web UI. The focus is on privacy related services (tor relay, privoxy, polipo, firewall) and basic networking (network configuration, dhcp/dns server) but of course there is room for everything.
- Make some configuration tools
- Make a middleware to manage configuration tools better
- Make a WebUI for the middleware
- Make this simple to install on a standard debian distribution (or openwrt)
Application Mobile Android for Ninux
The Ninux Network is a kind of network based on Nodes. There are several nodes in Rome (and other Italian cities). We could create an Android mobile application oriented to Ninux network. This app will allow the user to know if he’s connected to a Ninux Node (or where’s the nearest) simply using his personal mobile phone. Functionalities:
- See other users connected to the same node;
- show info about the network through google maps and other tools;
- make available an augmented reality system;
- calculation of distance and fresnel’s zone.
- Download/Upload file from/to the node or to share files directly between two users connected to the same node;
Additional goals are to add some cool features:
- Use some kind of protocol for voice traffic (i.e. VoIP) to provide free calls between users;
- Sharing text/video/image messages posting them on the page of another user/node using a blogger interface where each user can create a own page, control it, insert models, change the layout;
- Remote access to its own pc.
- Implement a Jabber Client for chatting on Ninux jabber’s chat using its own mobile phone;