TomatoUSB

I am attempting to use CUPS to set up airprint functionality for an IPad following these instructions:

http://www.finnie.org/2010/11/13/airprint-and-linux/

However, when I attempt to start cupsd I get "Segmentation fault." Starting with strace gives:

/opt/sbin# strace cupsd
execve("/opt/sbin/cupsd", ["cupsd"], [/* 9 vars */]) = 0
old_mmap(NULL, 20, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaae000
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Segmentation fault

Am hoping someone might have tips on how to figure out what I'm doing wrong.

Thank you,
John

Any progress. I'd really like to get this working as well.

I'm very interested in this as well. Please post if you get AirPrint to work on TomatoUSB.

Here's someone who got it to work on Optware but a different device.

I was able to start cups on my RT-N16, but I get the problem with "404 Page Not found." when I access /admin page, it asks me for password, but then 404 again after it logs in. I tried to play around with config files, but no luck at all.

For those who wants to try to install it, use openwrt's optware repository. In /opt/etc/ipkg.conf change dd-wrt line to

src/gz optware http://ipkg.nslu2-linux.org/feeds/optware/openwrt-brcm24/cross/unstable

teddy, is there a way to add chroot support to tomato ? At least then it will create a possibility of running full debian on the router along with all of the software that comes with it.

I have had CUPS v1.4 4-1 working on an RT-N16 with OpenWrt (downloads.openwrt.org/snapshots/trunk/brcm47xx/packages), I still cannot get it to work on TomatoUSB though. The best I have managed to date is to view the home page on port 631. Personally I'd rather use TomatoUSB but I honestly do not know how to fix this without flashing the firmware.

btw I forgot to mention you need to create a self signed certificate in order to access the CUPS Admin pages (as it wants to do this via an HTTPS session) so assuming you have OpenSSL installed the command to do this is:

openssl req -new -x509 -keyout /opt/etc/cups/ssl/server.key -out /opt/etc/cups/ssl/server.crt -days 365 -nodes

looking at the data and folder structure combined with 404 browser errors seen so far I am wondering if the basic web site construction is not all there, what I might do is revert back to OpenWrt and take a closer look at the working installation with WinSCP.

scratch that I am talking rubbish, the web pages are created dynamically with CGI however for some reason they are not.

I have checked the eXecute permissions and they seem fine, I copied admin.cgi to the TomatoUSB /www/… path to try and run the CGI from a different path in the web browser on port 80 which led to a Segmentation Fault (tbh it was a long shot at best).

Given that I like TomatoUSB Toastman builds I am tempted at this point to live with the fact I can print OR scan from my MFP HP LJ3030 with a hotplug or power cycle of the printer (to force the usb access back to the kernel module over HPAIO) until someone more experienced than me takes up the challenge. I wish I could do more but I'm not even seeing LOG file enteries for cupsd…

Point is ipkg install cups aint gonna work, subject to an update forget not sure how it got added to the feed in the first place tbh.

As I said earlier if you really want to run CUPS on an RT-N16 atm use OpenWrt Trunk (Bleeding Edge), it works. I got a test print going from a WinXP client and RT-N16 print server with little to no hassle.

I was able to get cups/avahi/airprint running on my RT-N16 w/v1.28.9054 MIPSR2-beta K26 USB vpn3.6

NOTES:

• All binaries referenced below are dynamically linked, so use ldd to make sure you have the appropriate libraries in /opt/lib (get them from Rodney: multics.minidns.net/blog/articles/tomato_utilities/)
• I've tested this on one router with one printer, ymmv
• cups itself takes 8.4M, I haven't done anything to reduce the size other than strip the binaries. There's probably stuff that can be cleaned up.
• if you use my build review /opt/etc/cups/cupsd.conf, the security is fairly open

I complied cups 1.5 using the K26 SDK, tar.gz avilable here:
www.moharps.com/tomato/cups-1.5.0_tomato.tar.gz
Make sure you have an /opt mount, expand this in /

I have a network attached postscript printer, so I needed pdftops (airprint is pdf). Here's a copy of pdftops from xpdf-3.03 (optware also has one I haven't tried):
www.moharps.com/tomato/pdftops
place in /opt/bin

You'll also need avahi-daemon, I used Rodney's from here:
multics.minidns.net/tomato/PRECOMPILED/avahi/avahi-daemon
place in /opt/sbin

Make the /var directories that cups requires:

mkdir -p /var/cache/cups/rss
mkdir -p /var/log/cups
mkdir -p /var/run/cups/certs
mkdir -p /var/spool/cups/tmp

Start cups:
/opt/sbin/cupsd

Now you should be able to browse to 192.168.1.1:631 and see the GUI (if using a different IP scheme you'll need to adjust /opt/etc/cups/cupsd.conf)

Configure a printer (PPDs go in /opt/usr/share/cups/model)

Configure avahi:
you'll need a /opt/etc/avahi/avahi-daemon.conf
you'll also need to create a /opt/etc/avahi/services/[name].service for the printer you created (see the link in the first post)

start avahi:
/opt/sbin/avahi-daemon -D

Try airprint…

@harpchad, I followed your instructions up to start up cups with "/opt/sbin/cupsd". There is no error starting the command and "ps" shows: "/opt/sbin/cupsd -C /opt/etc/cups/cupsd.conf". So, it looks like cupsd is actually running. However, no matter what I try, I cannot open cups web page.

My router IP is 192.168.0.2, so I modified from your cpusd.conf from "Listen 192.168.1.1:631" to "Listen 192.168.0.2:631".

I tried "h t t p s : // 192.168.0.2:631" and I get: "Error code: ssl_error_rx_record_too_long". Do I need to generate/copy some kind of certificate into /var/run/cpus/certs ?
Currently there is only one file named "0" with a 32 bytes hex string in there.

I also tried "h t t p : // 192.168.0.2:631" and I get a totally blank page. Viewing source code on the page shows nothing — blank.

I checked the log files in /var/log/cups. All 3 files has nothing in there — "page_log" "error_log" "access_log", all size 0.

I'm using Toastman's build on a Linksys E4200 v1: Tomato Firmware v1.28.0495 MIPSR2-Toastman-VLAN-RT-N K26 USB VPN

Any help is greatly appreciated!

Really want to know what happened to this. Can you put together an easy package to get airprint running on a n16?