Function do_class_op

cgi-bin/classes.c:206–282

 */

static void
do_class_op(http_t      *http,		/* I - HTTP connection */
            const char	*printer,	/* I - Printer name */
	    ipp_op_t    op,		/* I - Operation to perform */
	    const char  *title)		/* I - Title of page */
{
  ipp_t		*request;		/* IPP request */
  char		uri[HTTP_MAX_URI],	/* Printer URI */
		resource[HTTP_MAX_URI];	/* Path for request */


 /*
  * Build a printer request, which requires the following
  * attributes:
  *
  *    attributes-charset
  *    attributes-natural-language
  *    printer-uri
  */

  request = ippNewRequest(op);

  httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,
                   "localhost", 0, "/classes/%s", printer);
  ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
               NULL, uri);

 /*
  * Do the request and get back a response...
  */

  snprintf(resource, sizeof(resource), "/classes/%s", printer);
  ippDelete(cupsDoRequest(http, request, resource));

  if (cupsLastError() == IPP_NOT_AUTHORIZED)
  {
    puts("Status: 401\n");
    exit(0);
  }
  else if (cupsLastError() > IPP_OK_CONFLICT)
  {
    cgiStartHTML(title);
    cgiShowIPPError(_("Unable to do maintenance command"));
  }
  else
  {
   /*
    * Redirect successful updates back to the printer page...
    */

    char	url[1024],		/* Printer/class URL */
		refresh[1024];		/* Refresh URL */


    cgiRewriteURL(uri, url, sizeof(url), NULL);
    cgiFormEncode(uri, url, sizeof(uri));
    snprintf(refresh, sizeof(refresh), "5;URL=%s", uri);
    cgiSetVariable("refresh_page", refresh);