[cups.general] Repetitive Error Message: /printers/printers no good!

[Lou H. Goddard]

Greetings,

My printer spooler recently began spewing out the following error 
message:
	get_printer_attrs: resource name '/printers/printers' no good!

This behavior began after I updated my CUPS installation with the 
provided Redhat RPMS.
I understand this could be a problem unique to Redhats repackaging of 
CUPS.  I will investigate there as well.
	Previous RPM: cups-1.1.22-0.rc1.9.20.2.i386.rpm
	Current RPM:  cups-1.1.22-0.rc1.9.20.2.el4_6.5.i386.rpm

Can someone assist me in understanding the error message?  I downloaded 
the source to CUPS and found the relevant snippets of code in printers.c 
and ipp.c.  The IPP string being passed from CUPS to CUPS over the 
loopback is causing this error message to be triggered.  The string 
specifically is: "ipp:///printers/printers"  I am having some difficulty 
tracing where this is coming from.  I am unable to find any obvious 
mistakes in my configuration.  Additionally, this message never existed 
on my system prior to the patch.

At least one other user, Steve Snyder, observed this behavior. See his 
mail posting here: http://marc.info/?l=centos&m=119990817725652&w=2

I've included some information I have gathered below.

Thanks in advance,
Lou Goddard

On the loopback interface I found this conversation the spooler was 
having with itself.  This seems to be the trigger for the error message.
	POST / HTTP/1.1
	Content-Length: 190
	Content-Type: application/ipp
	Host: localhost
	.........G..attributes-charset..utf-8H..attributes-natural-language
...en-usE..printer-uri..
	ipp:///printers/printersB..
	requested-attributes..printer-nameB....printer-infoB....printer-loc
ation.HTTP/1.1 200 OK
	Date: Sat, 01 Mar 2008 23:45:33 GMT
	Server: CUPS/1.1
	Connection: Keep-Alive
	Keep-Alive: timeout=60
	Content-Language: en_US
	Content-Type: application/ipp; charset=iso-8859-1
	Content-Length: 75
	.........G..attributes-charset..utf-8H..attributes-natural-language
...en-us.

Scheduler/ipp.c
 /*
  * Is the destination valid?
  */

  httpSeparate(uri->values[0].string.text, method, username, host, 
&port, resource);

  if ((dest = ValidateDest(host, resource, &dtype)) == NULL)
  {
   /*
    * Bad URI...
    */

    LogMessage(L_ERROR, "get_printer_attrs: resource name \'%s\' no 
good!", resource);
    send_ipp_error(con, IPP_NOT_FOUND);
    return;
  } 
       
Scheduler/printers.c
/*
 * 'ValidateDest()' - Validate a printer/class destination.
 */

const char *                            /* O - Printer or class name */
ValidateDest(const char   *hostname,    /* I - Host name */
             const char   *resource,    /* I - Resource name */
             cups_ptype_t *dtype)       /* O - Type (printer or class) 
*/
{
  printer_t     *p;                     /* Current printer */
  char          localname[1024],        /* Localized hostname */
                *lptr,                  /* Pointer into localized 
hostname */
                *sptr;                  /* Pointer into server name */


  DEBUG_printf(("ValidateDest(\"%s\", \"%s\", %p)\n", hostname, 
resource, dtype));

 /*
  * See if the resource is a class or printer...
  */

  if (strncmp(resource, "/classes/", 9) == 0)
  {
   /*
    * Class...
    */

    resource += 9;
  }
  else if (strncmp(resource, "/printers/", 10) == 0)
  {
   /*
    * Printer...
    */

    resource += 10;
  }
  else
  {
   /*
    * Bad resource name...
    */

    return (NULL);
  }      


       ------------------  CONFIDENTIALITY NOTICE  ---------------
 
  This message, including any attachments, is for the sole use of the
 intended recipient(s) and may contain privileged confidential information
 protected by law. Any unauthorized review, use, disclosure or distribution
 of this message is prohibited. If you are not the intended recipient, please
 contact the sender by reply e-mail and destroy all copies of this message.

       ------------------  CONFIDENTIALITY NOTICE  ---------------
				--------
  This message has been scanned for viruses and	dangerous content by 
  MailScanner, and is believed to be clean.