Wednesday, October 31, 2007
Sunday, October 28, 2007
At some point, I've tested each part. Most of it is still connected and available on demand (from inside the network). About the only part that I've disabled is the IDJC piece (it generated too many audio "artifacts").
The parts in red are record functions. The piece in green is Asterisk passing CallerID info to SageTV. The rectangles are hardware. The circles are not.
Pieces that play MP3 files from the library:
- Icecast (via relay)
For video, my favorite is SageTV. It records scheduled and timed video, has a "hackable" web interface, allows all sorts of plugins for additional features, and can stream to hardware and software clients in the local network. It generates RSS feeds for recent recordings and the upcoming recording schedule. For those that aren't familiar with SageTV, think MythTV with a lot more polish and a lot less set-up work.
Note: this is all Linux-based but there are Windows versions of just about all of the programs. The amazing part is that I rarely see my dual core system get below 95% idle.
Wishlist (things I want to experiment with in the next year): X-10 interface, home automation, some sort of podcatcher, IAX to a friend's Asterisk box, a hardware-based phone, motion detection with cameras, hosting and/or recording a live conference call, amateur radio.
Disclaimer: I do nothing illegal with this set up, though the capability is definitely there. Diagram courtesy of GraphViz's dot program.
Saturday, October 27, 2007
Wednesday, October 24, 2007
Saturday, October 20, 2007
Thursday, October 18, 2007
If you know of anyone pining for the old days, especially if they're obnoxiously spouting off how cool Fidonet was and such, you can point them (telnet) to bbs.hak5.org. There, the Hak5 bunch has set up a BBS so that people can be reminded just how spare the interface was.
A few things missing from the experience:
- the text should be printing at 300 baud (about the speed that the average fourth-grader can keep up with)
- the connection should drop out periodically (think of it as beind randomly logged off against your will)
- the text files need more Ctrl-G's
I do miss those Ctrl-G's.
- use gcc, not make or cc
- when you run the program what is displayed?
- can you do anything (hint: type ls or whoami)
- if you hit Ctrl-C and run "ls -l", what do you see?
- re-run the program and try to answer these questions again
Note: success may be specific to the version of the OS being run on the target machine. Your mileage will vary depending on a number of things (hint: the classroom lab is a controlled environment (i.e., each target is exactly the same)).
Enjoy! But you should probably get your homework done first. You may spend more time than you should getting the exploits to work in your home labs. If you're frustrated, please note that Rob usually isn't adverse to you coming in when there isn't a class in the lab. Just check in with one of the techs in the fishbowl.
Tuesday, October 16, 2007
Friday, October 12, 2007
Wednesday, October 10, 2007
There's a case in the UK where a car repair business is being sued for copyright infringement because their mechanics are playing music loud enough that it can be overheard by others. Silly, no?
Even sillier, it's not the employees of the business that are being sued for the actual sharing of the music (by turning their radios on). Rather, it is the business being sued for facilitating that sharing. (Never mind that broadcast radio has already paid for the broadcasted content and that it is able to be heard by anyone with enough skill to operate a tuning dial or button.) Or will the employees be sued at a later date, once it can be determined whose radio played what song when?
What's next? Having to pay a service fee for riding the elevator because muzak was playing while you rode? Of course, the elevator company would have to record the number of riders and the distance (in floors) that each rider traveled.
Monday, October 8, 2007
Sunday, October 7, 2007
Problem is that I'll need to use the current NSLU2 (with the audio interface) and another with Icecast running on it. I running the risk of more people (at the meeting) being fascinated with the NSLU2's than the LS scripts I'm trying to show off. (Notes will be in the wiki shortly.)
Wednesday, October 3, 2007
I can attest that chaining Sky.FM-->SlimServer-->LiquidSoap-as-a-player works very nicely. Even the metadata being passed across from Sky.FM is handled properly, and neither processor got below 95% idle on the dual core, even with all of the other crap I run on the box (SageTV, fetchmail, etc.). That's saying a lot as it appears that both Slimserver and (possibly) LiquidSoap are doing a bit of transcoding on the fly. The one drawback to this so far is SlimServer's built-in delay (5 or so seconds). I'll need to read up on that.
It's obvious that simulcasting (rebroadcasting/redirecting) a stream is going to be simple. I need to play with the mixing features now (think "periodic jingles" mixed into an open conference call). If I can come up with an interface to Asterisk, you can consider me as having thrown IDJC in the round file.
Oh! If anyone's interested (and for my own notes), the syntax is
In attempting to troubleshoot IDJC, I discovered a new streaming tool called "LiquidSoap". To quote the website, it is basically a "general purpose audio streaming tool, designed as a script language, which allows you to build complex webradios".
While the toolset is still considered to be in development, I was able to get streams going via a local radio site (okay, hak5radio) in 30 minutes of installation/reading, vice the 2 months of on and off frustration with IDJC.
In reading some of the docs, there's quite a few interesting features: on-the-fly transcoding/normalization, misc. scheduling features, drop-on-live-input, an IRC bot interface (with input!), and even a (in-development) touchsreen interface. Definitely something for the home theater enthusiast that likes to tweak his/her own stuff!
Monday, October 1, 2007
(heh) Cutting edge does have its drawbacks...