Free userspace software for linux

Layer-7 Packet Classifier for Linux is a classifier for Linuxs Netfilter that identifies packets based on application layer data. It can classify packets as Kazaa, HTTP, Jabber, Citrix, Bittorrent, FTP, Gnucleus, eDonkey2000, etc., regardless of port. It complements existing classifiers that match on IP address, port numbers and so on.
Our intent is for l7-filter to be used in conjunction with Linux QoS to do bandwith arbitration ("packet shaping") or traffic accounting.
Main features:
- Patches for Linux 2.4 and 2.6
- Support for TCP, UDP and ICMP over IPv4
- Uses Netfilters connection tracking of FTP, IRC, etc
- Examines data across multiple packets
- Number of packets examined tunable on the fly through /proc
- Number of bytes examined tunable at module load time
- Distinguishes between new connections (those still being tested) and old unidentified connections
- Gives access to both Netfilter and QoS (rate limiting) features
- With the Netfilter "helper" match, you can distinguish between parent and child connections (e.g. ftp command/data)
Enhancements:
- Added man page.
- Added ./configure to check for libraries.
- Made patterns directory user selectable.
- Counts all packets now, not just those with application layer data. I think this is better because it avoids holding connections forever if they keep sending empty packets. On the other hand, now connections can evade l7-filter by sending a bunch of empty packets at the beginning. Perhaps a more complex approach may be necessary at some point.
- Made number of packets user selectable. Defaults to 10 (not 8).
- Organized pattern file parsing code better.
- Made buffer length user selectable. Made buffer dynamically allocated. It is now only kept when needed instead of for the whole life of the connection. Buffer is dumped to the screen (if in verbose mode) when (1) too many packets have passed without a match or (2) connection is closed without a match.
- Now checks for ip_conntrack_netlink module.
- Various tweaks.
Enhancements:
- Using only part of the Netfilter packet mark, defined by a bitmask, is now allowed.
- The configure script was improved.

fusedav is a Linux userspace file system driver for mounting WebDAV shares. fusedav makes use of FUSE as userspace file system API and neon as WebDAV API.

Installation

As this package is made with the GNU autotools you should run ./configure inside the distribution directory for configuring the source tree. After that you should run make for compilation and make install (as root) for installation of fusedav.

After installation just run fusedav with two arguments: the WevDAV URL and the local mount point:

fusedav http://webdav.foo.bar/ /tmp/test

You will be queried for a username and password if required. As long as the fusedav process is running, the file system is accessible under /tmp/test.

CueAct is a small userspace utility that takes advantage of the Linux CueCat driver.
Its purpose is to exploit barcodes read by a CueCat reader, and decoded by the CueCat driver, by performing an action of interest associated with the barcode swiped (the most obvious being to link a barcode with a suitable database to look up in no time the information relevant to that barcode).
Compiling and installing
In the source directory, simply type ./make : the "cueact", "upce2upca" and "xautotype" binaries should be created without problem, the software being very simple and portable. Then, type ./make install as root to install the them in /usr/local/bin.
Enhancements:
- Deprecated the dcdb utility, as it is now useless since DigitalConvergences database has disappeared.
- Changed the sample configuration file so that it calls Mozilla instead of Netscape, and changed the UPC database used from barpoint.com back to upcdatabase.com.

oss2jack creates an OSS device which redirects its input and output to the Jack Audio Connection Kit. oss2jack supports a large subset of the OSS specification, including full duplex I/O and mmap.
oss2jack uses Jeremy Elsons useful fusd library to create a userspace character device, which is also a jackd client.
It supports mono and stereo streams, with virtually any sample rate thanks to libsamplerate. Only the commonly-used OSS ioctls are currently supported.
Enhancements:
- A few minor bugs that prevented smooth operation with Asterisk were fixed.
- In addition, oss2jack can now host jackd, allowing the user to run a long chain of processes with oss2jack and jackd.