Rob "WiFi high-wire" Flickenger and his band of wily WiFi sreenigne (that's reverse-engineers to you) have discovered that Linksys is using GPL'ed code in its firmware without releasing its modifications -- a major no-no.
One early problem was that of the format of their firmware updates. While the code contained within might be released under the GPL, Linksys is under no obligation to release the details of this file format. And yes, I asked them directly, but to date have gotten no reply.
No matter, with the help of many interested people around the globe, we have been able to decipher the (relatively simple) firmware file format, and even make a little utility that will generate a valid firmware for you. (Note that it's really easy to kill your AP with "bad" firmware, but that's another story altogether...)
Now that we are able to execute arbitrary commands on the WRT54G, it is obvious that Linksys is running modified software covered by the GPL. One perfect example of this is Zebra, the advanced dynamic routing software package. By opening the firmware file directly, as well as by making queries through the makeshift ping interface mentioned earlier, we noticed that the zebra running on the WRT54G doesn't use the standard configuration file locations. This means that it must certainly be a modified binary.
Update: Rob sez, "I might have spoken too soon. I have been gently reminded that it is possible (in fact, trivial) to change config file locations without modifying the source. It also turns out that they are releasing some changes, but there is still some question about kernel modifications. I've posted an update on my original blog."
I asked Amy Parness, the co-founder of Sparkle Labs, maker of fantastic educational electronics kits, to write a Medium post about gender and the business of being a maker business person. Her terrific essay calls out the problems with “pink girly engineering kits.” From Medium:
Zero UI is the new term for “invisible interfaces”—what happens in the future when all the clicking and tapping and typing is history: “If you look at the history of computing, starting with the jacquard loom in 1801, humans have always had to interact with machines in a really abstract, complex way.” [Fast Company]
Watching Netflix, Hulu or other streaming services can unfortunately be difficult while traveling outside the US. Rather than bypass these restrictions with the help of a complex and slow VPN, choose a faster and simpler solution with Getflix. Instead of rerouting all your Internet traffic through a different server, this handy service only routes the […]
Shake, stir, and muddle your way to delicious homemade cocktails with this must-have bar set. Expect only the finest quality tools from MakersKit — enabling you to unleash your inner mixologist.Top 12 Favorite Things of 2014, Sunset MagazineQuart-size vintage-style Mason jar shakerRetro double jigger for accurate measurementsStrainer & spouts for a mixologist-style smooth pourHardwood muddler […]
The Lytro Illum dares to be different, boasting even more robust features than its first generation predecessor and a sleek design reminiscent of professional DSLRs. What’s so cool about it? Most cameras capture the position of light rays, producing a statoc 2D image.