Bug ID: JDK-4683270 Start supporting CUPS printing in Linux JDK

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5.0 tigerFixed

Currently printing uses BSD commands on Linux.  That only provides
very limited options in combination with CUPS's BSD compatibility
layer:

E.g. I have one printer named brother.  It has a default instance for
normal one-sided printing and two additional instances for for duplex
printing and two-sides-on-one duplex printing.

     % lpstat -d -v
     system default destination: brother/duplex
     device for brother: ipp://192.168.1.20:631/ipp
     device for brother/duplex: ipp://192.168.1.20:631/ipp
     device for brother/papers: ipp://192.168.1.20:631/ipp

The current J2SE code only see one printer on Linux (Solaris should be
OK because it uses SYSV commands):

     % java ListCUPSDestinations[1]
     Unix Printer : brother

With a few modifications[2] I get better results:

     % java ListCUPSDestinations
     Unix Printer : brother/duplex
     Unix Printer : brother
     Unix Printer : brother/duplex
     Unix Printer : brother/papers

CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: tiger FIXED IN: tiger INTEGRATED IN: tiger tiger-b15

14-06-2004

SUGGESTED FIX [1] ,----[ ListCUPSDestinations.java ] | import java.awt.print.*; | import javax.print.*; | | public class ListCUPSDestinations | { | public static void main(String[] args) | { | PrintService[] services = PrinterJob.lookupPrintServices(); | for (int i = 0; i < services.length; i++) { | System.out.println(services[i]); | } | } | } `---- [2] ,---- | Index: UnixPrintServiceLookup.java | =================================================================== | RCS file: /var/jdk12/jdk/j2se1.4/src/solaris/classes/sun/print/UnixPrintServiceLookup.java,v | retrieving revision 1.1.1.3 | diff -u -u -r1.1.1.3 UnixPrintServiceLookup.java | --- UnixPrintServiceLookup.java 7 Mar 2002 02:55:35 -0000 1.1.1.3 | +++ UnixPrintServiceLookup.java 10 May 2002 03:32:56 -0000 | @@ -50,14 +50,25 @@ | private Vector lookupListeners = null; | | static String osname; | + static boolean isCUPS; | + static boolean useBinSh; | | static { | osname = (String)java.security.AccessController.doPrivileged( | new sun.security.action.GetPropertyAction("os.name")); | + | + if ("Linux".equals(osname)) { | + String command = "/usr/bin/lpstat -r | grep 'is running'"; | + String[] answer = execCmd(command); | + if (answer != null && answer.length > 0) { | + isCUPS = true; | + useBinSh = true; | + } | + } | } | | static boolean isSysV() { | - return osname.equals("SunOS"); | + return isCUPS || osname.equals("SunOS"); | } | | static boolean isBSD() { | @@ -437,7 +448,7 @@ | | try { | final String[] cmd = new String[3]; | - if (isSysV()) { | + if (isSysV() && !useBinSh) { | cmd[0] = "/usr/bin/sh"; | cmd[1] = "-c"; | cmd[2] = "env LC_ALL=C " + command; `----

11-06-2004

EVALUATION We will support this for 1.5. ###@###.### 2003-02-13 With the fix, the output would look like: % java ListCUPSDestinations IPP Printer : brother/duplex IPP Printer : brother IPP Printer : brother/papers "IPP Printer" means that the printer has been queried using HTTP/IPP communication. ###@###.### 2003-07-23 =====================================

23-07-2003