Roy, Why not just change the *default* printer based upon the workstation you log into. (No one ever uses anything but the default anyway ;) ).
This should be an easy matter of a short login script that exports the PRINTER environment variable (and/or ~/.cups/lpoptions) to the appropriate queue based upon workstation hostname/IP. Cheers, -Gadi On Thu, 2006-08-31 at 10:53 -0600, Roy Souther wrote: > Yes it is important that the users not be able to see the other > printers because there are about 20 printers in the school and that > just confuses them. > > I cannot restrict printer access by user ID because students and staff > will move between their class rooms and the computer lab, and staff > will also want to print from the terminal in the staff room. > > I think the MAC address of the terminal is the key. I can have each > MAC address set in the dhcpd.conf to set the system name to identify > the room it is in like rm16t1 rm16t2 and so on. Then when a user tries > to print I can have some CUPS-backend that runs a simple bash script > to take the $DISPLAY to find the terminal it is connected to then use > that to find the MAC address, then the room and finally return the > information about what printer should be usable to the CUPS server. > > I think you hit on one key issue, CUPS may not be able to hide the > other printers. For that mater I don't even know if CUPS is able to > set a different default printer for each user. At some point a running > app that want to print makes some sort of query to find out what > printers are available. If it asks CUPS for that list then I should be > able to make another CUPS-backend that alters the selection but if the > app just gets a list of printers by looking in the /etc/printcap.cups > I don't think I will be able to hide any thing. > > On Thu, 2006-08-31 at 10:00 -0500, Scott Balneaves wrote: > > On Thu, Aug 31, 2006 at 08:35:43AM -0600, Roy Souther wrote: > > > I want to make it so that only the people in that class room can see > > > that printer. So basically if you are using a terminal in a zone you > > > have a restricted view of what printers are available. > > > > Only people in that classroom can SEE the printer, or print to the > > printer? If it's print, then that's easy: cups allows you to assign > > permissions based on userid, so for each class, just add the people in > > the class. > > > > If it's SEE, then that's going to require patches to CUPS, as all > > printers as visible by default. You'll also have to do it based on > > $DISPLAY, rather than MAC address, because the print requests are coming > > from the server anyway, so the terminal's mac address isn't going to > > come into it, because it's not visible at that point. The $DISPLAY > > variable is, however. > > > > Scott > > Royce Souther > www.SiliconTao.com > Let Open Source help your business move beyond. > > For security this message is digitally authenticated by GnuPG. > > > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _____________________________________________________________________ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP > help, try #ltsp channel on irc.freenode.net -- -------------------------------------------------------- Gideon Romm | Proud LTSP Developer [EMAIL PROTECTED] Support LTSP! Buy your hardware at: www.DisklessWorkstations.com www.DisklessThinClients.com (use coupon code: LTSP5P for 5% off thin clients from DisklessThinClients.com) ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
