PRS-500 Reader internals - Page 8

scotty1024 · 02-12-2007, 06:58 PM

Now that I've got a R/W Universal Binary version of the mountable filesystem out...

I'm off to do a Firmware Flasher for Mac/Linux.

My thought is to make a R/W CRAMFS FUSE filesystem to allow updating of the image files (to add fonts).

Thiana · 05-01-2007, 03:31 PM

Quote:

Originally Posted by igorsk

The main reader application is "tinyhttp".

Is the source for this online anywhere? Thanks.

igorsk · 05-01-2007, 04:08 PM

Quote:

Originally Posted by Thiana

Is the source for this online anywhere? Thanks.

As it is not a part of Linux but an original software written by Sony, they're not bound by the GPL to release the sources for it. So: no, there is no source for it online anywhere.

Buffy · 04-17-2008, 05:04 PM

TinyHttpd is a simple web server, usually run on webcams, routers and similar embedded systems to support configuration tools. The source is available. It may be run as a kernel process in memory-limited systems. But its basically just a web server and works like all others.

Of course Sony could have used that name for something else, but that seems pretty unlikely.

I would assume that at least one purpose for a web server would be to load content, diagnose and/or configure the reader through a network connection. Small embedded Linux systems often use IP over USB to avoid any additional hardware, and I see that the software to support IP over USB is installed, but not activated by default - or a least no network connections show up when I plug my reader in. So I assume that either a command must be sent to the reader, or some special combination of keys pressed to load the appropriate gadgets.

(On Linux, client-side USB drivers are called "gadgets". A gadget is needed for each different function.) Clearly the ones for charging and SCSI are there and working, because when I plug in the reader it negotiates for power and provides connections for the part of the internal memory and the card slots.

Of course its very hard to know what's there just because they didn't take it out, and what's there because they have (or plan to have) a use for it. But it seems unlikely they'd have both the IP over USB gadgets and a web server running unless some sort of network interface was used or planned for.

I may try to figure out how to implement the USB commands you've listed and what they do - it could be that one of those enables the network interface. I don't have a MS Windows system handy to try the DLLs on, but probably can come up with one.

I would assume that once the networking is enabled, it should be possible to connect to the web server (and probably the SSH daemon too) and talk to the reader more directly than by dropping autorun files onto a removable device.

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02-12-2007, 06:58 PM	#106
scotty1024 Banned Posts: 1,300 Karma: 1479 Join Date: Jul 2006 Location: Peoples Republic of Washington Device: Reader / iPhone / Librie / Kindle	Now that I've got a R/W Universal Binary version of the mountable filesystem out... I'm off to do a Firmware Flasher for Mac/Linux. My thought is to make a R/W CRAMFS FUSE filesystem to allow updating of the image files (to add fonts).

04-17-2008, 05:04 PM	#109
Buffy Junior Member Posts: 1 Karma: 10 Join Date: Apr 2008 Device: Sony PRS-505	TinyHttpd is a simple web server, usually run on webcams, routers and similar embedded systems to support configuration tools. The source is available. It may be run as a kernel process in memory-limited systems. But its basically just a web server and works like all others. Of course Sony could have used that name for something else, but that seems pretty unlikely. I would assume that at least one purpose for a web server would be to load content, diagnose and/or configure the reader through a network connection. Small embedded Linux systems often use IP over USB to avoid any additional hardware, and I see that the software to support IP over USB is installed, but not activated by default - or a least no network connections show up when I plug my reader in. So I assume that either a command must be sent to the reader, or some special combination of keys pressed to load the appropriate gadgets. (On Linux, client-side USB drivers are called "gadgets". A gadget is needed for each different function.) Clearly the ones for charging and SCSI are there and working, because when I plug in the reader it negotiates for power and provides connections for the part of the internal memory and the card slots. Of course its very hard to know what's there just because they didn't take it out, and what's there because they have (or plan to have) a use for it. But it seems unlikely they'd have both the IP over USB gadgets and a web server running unless some sort of network interface was used or planned for. I may try to figure out how to implement the USB commands you've listed and what they do - it could be that one of those enables the network interface. I don't have a MS Windows system handy to try the DLLs on, but probably can come up with one. I would assume that once the networking is enabled, it should be possible to connect to the web server (and probably the SSH daemon too) and talk to the reader more directly than by dropping autorun files onto a removable device.

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