[packages/cups.git] / add-ipp-backend-of-cups-1.4.patch

--- a/backend/Makefile
+++ b/backend/Makefile
@@ -21,6 +21,7 @@
 # See http://www.cups.org/documentation.php/api-filter.html for more info...
 RBACKENDS =	\
 		ipp \
+		ipp14 \
 		lpd \
 		$(DNSSD_BACKEND)
 UBACKENDS =	\
@@ -51,6 +51,7 @@
 		snmp-supplies.o
 OBJS	=	\
 		ipp.o \
+		ipp14.o \
 		lpd.o \
 		dnssd.o \
 		snmp.o \
@@ -218,6 +218,17 @@
 
 
 #
+# ipp14
+#
+
+ipp14:	ipp14.o ../cups/$(LIBCUPS) libbackend.a
+	echo Linking $@...
+	$(CC) $(LDFLAGS) -o ipp14 ipp14.o libbackend.a $(LIBS)
+	#$(RM) http
+	#$(LN) ipp14 http
+
+
+#
 # lpd
 #
 
--- /dev/null
+++ b/backend/ipp14.c
@@ -0,0 +1,1953 @@
+/*
+ * "$Id: ipp.c 8950 2010-01-14 22:40:19Z mike $"
+ *
+ *   IPP backend for the Common UNIX Printing System (CUPS).
+ *
+ *   Copyright 2007-2010 by Apple Inc.
+ *   Copyright 1997-2007 by Easy Software Products, all rights reserved.
+ *
+ *   These coded instructions, statements, and computer programs are the
+ *   property of Apple Inc. and are protected by Federal copyright
+ *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
+ *   "LICENSE" which should have been included with this file.  If this
+ *   file is missing or damaged, see the license at "http://www.cups.org/".
+ *
+ *   This file is subject to the Apple OS-Developed Software exception.
+ *
+ * Contents:
+ *
+ *   main()                 - Send a file to the printer or server.
+ *   cancel_job()           - Cancel a print job.
+ *   check_printer_state()  - Check the printer state...
+ *   compress_files()       - Compress print files...
+ *   password_cb()          - Disable the password prompt for
+ *                            cupsDoFileRequest().
+ *   report_attr()          - Report an IPP attribute value.
+ *   report_printer_state() - Report the printer state.
+ *   run_pictwps_filter()   - Convert PICT files to PostScript when printing
+ *                            remotely.
+ *   sigterm_handler()      - Handle 'terminate' signals that stop the backend.
+ */
+
+/*
+ * Include necessary headers.
+ */
+
+#include <cups/http-private.h>
+#include "backend-private.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+/*
+ * Globals...
+ */
+
+static char	*password = NULL;	/* Password for device URI */
+static int	password_tries = 0;	/* Password tries */
+static const char *auth_info_required = "none";
+					/* New auth-info-required value */
+#ifdef __APPLE__
+static char	pstmpname[1024] = "";	/* Temporary PostScript file name */
+#endif /* __APPLE__ */
+static char	tmpfilename[1024] = "";	/* Temporary spool file name */
+static int	job_cancelled = 0;	/* Job cancelled? */
+
+
+/*
+ * Local functions...
+ */
+
+static void	cancel_job(http_t *http, const char *uri, int id,
+		           const char *resource, const char *user, int version);
+static void	check_printer_state(http_t *http, const char *uri,
+		                    const char *resource, const char *user,
+				    int version, int job_id);
+#ifdef HAVE_LIBZ
+static void	compress_files(int num_files, char **files);
+#endif /* HAVE_LIBZ */
+static const char *password_cb(const char *);
+static void	report_attr(ipp_attribute_t *attr);
+static int	report_printer_state(ipp_t *ipp, int job_id);
+
+#ifdef __APPLE__
+static int	run_pictwps_filter(char **argv, const char *filename);
+#endif /* __APPLE__ */
+static void	sigterm_handler(int sig);
+
+
+/*
+ * 'main()' - Send a file to the printer or server.
+ *
+ * Usage:
+ *
+ *    printer-uri job-id user title copies options [file]
+ */
+
+int					/* O - Exit status */
+main(int  argc,				/* I - Number of command-line args */
+     char *argv[])			/* I - Command-line arguments */
+{
+  int		i;			/* Looping var */
+  int		send_options;		/* Send job options? */
+  int		num_options;		/* Number of printer options */
+  cups_option_t	*options;		/* Printer options */
+  const char	*device_uri;		/* Device URI */
+  char		scheme[255],		/* Scheme in URI */
+		hostname[1024],		/* Hostname */
+		username[255],		/* Username info */
+		resource[1024],		/* Resource info (printer name) */
+		addrname[256],		/* Address name */
+		*optptr,		/* Pointer to URI options */
+		*name,			/* Name of option */
+		*value,			/* Value of option */
+		sep;			/* Separator character */
+  int		snmp_fd,		/* SNMP socket */
+		start_count,		/* Page count via SNMP at start */
+		page_count,		/* Page count via SNMP */
+		have_supplies;		/* Printer supports supply levels? */
+  int		num_files;		/* Number of files to print */
+  char		**files,		/* Files to print */
+		*filename;		/* Pointer to single filename */
+  int		port;			/* Port number (not used) */
+  char		uri[HTTP_MAX_URI];	/* Updated URI without user/pass */
+  ipp_status_t	ipp_status;		/* Status of IPP request */
+  http_t	*http;			/* HTTP connection */
+  ipp_t		*request,		/* IPP request */
+		*response,		/* IPP response */
+		*supported;		/* get-printer-attributes response */
+  time_t	start_time;		/* Time of first connect */
+  int		recoverable;		/* Recoverable error shown? */
+  int		contimeout;		/* Connection timeout */
+  int		delay;			/* Delay for retries... */
+  int		compression,		/* Do compression of the job data? */
+		waitjob,		/* Wait for job complete? */
+		waitprinter;		/* Wait for printer ready? */
+  ipp_attribute_t *job_id_attr;		/* job-id attribute */
+  int		job_id;			/* job-id value */
+  ipp_attribute_t *job_sheets;		/* job-media-sheets-completed */
+  ipp_attribute_t *job_state;		/* job-state */
+  ipp_attribute_t *copies_sup;		/* copies-supported */
+  ipp_attribute_t *format_sup;		/* document-format-supported */
+  ipp_attribute_t *printer_state;	/* printer-state attribute */
+  ipp_attribute_t *printer_accepting;	/* printer-is-accepting-jobs */
+  int		copies,			/* Number of copies for job */
+		copies_remaining;	/* Number of copies remaining */
+  const char	*content_type,		/* CONTENT_TYPE environment variable */
+		*final_content_type;	/* FINAL_CONTENT_TYPE environment var */
+#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
+  struct sigaction action;		/* Actions for POSIX signals */
+#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
+  int		version;		/* IPP version */
+  static const char * const pattrs[] =
+		{			/* Printer attributes we want */
+                  "com.apple.print.recoverable-message",
+		  "copies-supported",
+		  "document-format-supported",
+		  "marker-colors",
+		  "marker-high-levels",
+		  "marker-levels",
+		  "marker-low-levels",
+		  "marker-message",
+		  "marker-names",
+		  "marker-types",
+		  "printer-is-accepting-jobs",
+		  "printer-state",
+		  "printer-state-message",
+		  "printer-state-reasons",
+		};
+  static const char * const jattrs[] =
+		{			/* Job attributes we want */
+		  "job-media-sheets-completed",
+		  "job-state"
+		};
+
+
+ /*
+  * Make sure status messages are not buffered...
+  */
+
+  setbuf(stderr, NULL);
+
+ /*
+  * Ignore SIGPIPE and catch SIGTERM signals...
+  */
+
+#ifdef HAVE_SIGSET
+  sigset(SIGPIPE, SIG_IGN);
+  sigset(SIGTERM, sigterm_handler);
+#elif defined(HAVE_SIGACTION)
+  memset(&action, 0, sizeof(action));
+  action.sa_handler = SIG_IGN;
+  sigaction(SIGPIPE, &action, NULL);
+
+  sigemptyset(&action.sa_mask);
+  sigaddset(&action.sa_mask, SIGTERM);
+  action.sa_handler = sigterm_handler;
+  sigaction(SIGTERM, &action, NULL);
+#else
+  signal(SIGPIPE, SIG_IGN);
+  signal(SIGTERM, sigterm_handler);
+#endif /* HAVE_SIGSET */
+
+ /*
+  * Check command-line...
+  */
+
+  if (argc == 1)
+  {
+    char *s;
+
+    if ((s = strrchr(argv[0], '/')) != NULL)
+      s ++;
+    else
+      s = argv[0];
+
+    printf("network %s \"Unknown\" \"%s (%s)\"\n",
+           s, _cupsLangString(cupsLangDefault(),
+	                      _("Internet Printing Protocol")), s);
+    return (CUPS_BACKEND_OK);
+  }
+  else if (argc < 6)
+  {
+    _cupsLangPrintf(stderr,
+                    _("Usage: %s job-id user title copies options [file]\n"),
+		    argv[0]);
+    return (CUPS_BACKEND_STOP);
+  }
+
+ /*
+  * Get the (final) content type...
+  */
+
+  if ((content_type = getenv("CONTENT_TYPE")) == NULL)
+    content_type = "application/octet-stream";
+
+  if ((final_content_type = getenv("FINAL_CONTENT_TYPE")) == NULL)
+  {
+    final_content_type = content_type;
+
+    if (!strncmp(final_content_type, "printer/", 8))
+      final_content_type = "application/vnd.cups-raw";
+  }
+
+ /*
+  * Extract the hostname and printer name from the URI...
+  */
+
+  if ((device_uri = cupsBackendDeviceURI(argv)) == NULL)
+    return (CUPS_BACKEND_FAILED);
+
+  httpSeparateURI(HTTP_URI_CODING_ALL, device_uri, scheme, sizeof(scheme),
+                  username, sizeof(username), hostname, sizeof(hostname), &port,
+		  resource, sizeof(resource));
+
+  if (!port)
+    port = IPP_PORT;			/* Default to port 631 */
+
+  if (!strcmp(scheme, "https"))
+    cupsSetEncryption(HTTP_ENCRYPT_ALWAYS);
+  else
+    cupsSetEncryption(HTTP_ENCRYPT_IF_REQUESTED);
+
+ /*
+  * See if there are any options...
+  */
+
+  compression = 0;
+  version     = 11;
+  waitjob     = 1;
+  waitprinter = 1;
+  contimeout  = 7 * 24 * 60 * 60;
+
+  if ((optptr = strchr(resource, '?')) != NULL)
+  {
+   /*
+    * Yup, terminate the device name string and move to the first
+    * character of the optptr...
+    */
+
+    *optptr++ = '\0';
+
+   /*
+    * Then parse the optptr...
+    */
+
+    while (*optptr)
+    {
+     /*
+      * Get the name...
+      */
+
+      name = optptr;
+
+      while (*optptr && *optptr != '=' && *optptr != '+' && *optptr != '&')
+        optptr ++;
+
+      if ((sep = *optptr) != '\0')
+        *optptr++ = '\0';
+
+      if (sep == '=')
+      {
+       /*
+        * Get the value...
+	*/
+
+        value = optptr;
+
+	while (*optptr && *optptr != '+' && *optptr != '&')
+	  optptr ++;
+
+        if (*optptr)
+	  *optptr++ = '\0';
+      }
+      else
+        value = (char *)"";
+
+     /*
+      * Process the option...
+      */
+
+      if (!strcasecmp(name, "waitjob"))
+      {
+       /*
+        * Wait for job completion?
+	*/
+
+        waitjob = !strcasecmp(value, "on") ||
+	          !strcasecmp(value, "yes") ||
+	          !strcasecmp(value, "true");
+      }
+      else if (!strcasecmp(name, "waitprinter"))
+      {
+       /*
+        * Wait for printer idle?
+	*/
+
+        waitprinter = !strcasecmp(value, "on") ||
+	              !strcasecmp(value, "yes") ||
+	              !strcasecmp(value, "true");
+      }
+      else if (!strcasecmp(name, "encryption"))
+      {
+       /*
+        * Enable/disable encryption?
+	*/
+
+        if (!strcasecmp(value, "always"))
+	  cupsSetEncryption(HTTP_ENCRYPT_ALWAYS);
+        else if (!strcasecmp(value, "required"))
+	  cupsSetEncryption(HTTP_ENCRYPT_REQUIRED);
+        else if (!strcasecmp(value, "never"))
+	  cupsSetEncryption(HTTP_ENCRYPT_NEVER);
+        else if (!strcasecmp(value, "ifrequested"))
+	  cupsSetEncryption(HTTP_ENCRYPT_IF_REQUESTED);
+	else
+	{
+	  _cupsLangPrintf(stderr,
+	                  _("ERROR: Unknown encryption option value \"%s\"!\n"),
+	        	  value);
+        }
+      }
+      else if (!strcasecmp(name, "version"))
+      {
+        if (!strcmp(value, "1.0"))
+	  version = 10;
+	else if (!strcmp(value, "1.1"))
+	  version = 11;
+	else if (!strcmp(value, "2.0"))
+	  version = 20;
+	else if (!strcmp(value, "2.1"))
+	  version = 21;
+	else
+	{
+	  _cupsLangPrintf(stderr,
+	                  _("ERROR: Unknown version option value \"%s\"!\n"),
+	        	  value);
+	}
+      }
+#ifdef HAVE_LIBZ
+      else if (!strcasecmp(name, "compression"))
+      {
+        compression = !strcasecmp(value, "true") ||
+	              !strcasecmp(value, "yes") ||
+	              !strcasecmp(value, "on") ||
+	              !strcasecmp(value, "gzip");
+      }
+#endif /* HAVE_LIBZ */
+      else if (!strcasecmp(name, "contimeout"))
+      {
+       /*
+        * Set the connection timeout...
+	*/
+
+	if (atoi(value) > 0)
+	  contimeout = atoi(value);
+      }
+      else
+      {
+       /*
+        * Unknown option...
+	*/
+
+	_cupsLangPrintf(stderr,
+	                _("ERROR: Unknown option \"%s\" with value \"%s\"!\n"),
+			name, value);
+      }
+    }
+  }
+
+ /*
+  * If we have 7 arguments, print the file named on the command-line.
+  * Otherwise, copy stdin to a temporary file and print the temporary
+  * file.
+  */
+
+  if (argc == 6)
+  {
+   /*
+    * Copy stdin to a temporary file...
+    */
+
+    int			fd;		/* File descriptor */
+    http_addrlist_t	*addrlist;	/* Address list */
+    off_t		tbytes;		/* Total bytes copied */
+
+
+    fputs("STATE: +connecting-to-device\n", stderr);
+    fprintf(stderr, "DEBUG: Looking up \"%s\"...\n", hostname);
+
+    if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, "1")) == NULL)
+    {
+      _cupsLangPrintf(stderr, _("ERROR: Unable to locate printer \'%s\'!\n"),
+		      hostname);
+      return (CUPS_BACKEND_STOP);
+    }
+
+    snmp_fd = _cupsSNMPOpen(addrlist->addr.addr.sa_family);
+
+    if ((fd = cupsTempFd(tmpfilename, sizeof(tmpfilename))) < 0)
+    {
+      _cupsLangPrintError("ERROR", _("Unable to create temporary file"));
+      return (CUPS_BACKEND_FAILED);
+    }
+
+    _cupsLangPuts(stderr, _("INFO: Copying print data...\n"));
+
+    tbytes = backendRunLoop(-1, fd, snmp_fd, &(addrlist->addr), 0, 0,
+                            backendNetworkSideCB);
+
+    if (snmp_fd >= 0)
+      _cupsSNMPClose(snmp_fd);
+
+    httpAddrFreeList(addrlist);
+
+    close(fd);
+
+   /*
+    * Don't try printing files less than 2 bytes...
+    */
+
+    if (tbytes <= 1)
+    {
+      _cupsLangPuts(stderr, _("ERROR: Empty print file!\n"));
+      unlink(tmpfilename);
+      return (CUPS_BACKEND_FAILED);
+    }
+
+   /*
+    * Point to the single file from stdin...
+    */
+
+    filename     = tmpfilename;
+    num_files    = 1;
+    files        = &filename;
+    send_options = 0;
+  }
+  else
+  {
+   /*
+    * Point to the files on the command-line...
+    */
+
+    num_files    = argc - 6;
+    files        = argv + 6;
+    send_options = 1;
+
+#ifdef HAVE_LIBZ
+    if (compression)
+      compress_files(num_files, files);
+#endif /* HAVE_LIBZ */
+  }
+
+  fprintf(stderr, "DEBUG: %d files to send in job...\n", num_files);
+
+ /*
+  * Set the authentication info, if any...
+  */
+
+  cupsSetPasswordCB(password_cb);
+
+  if (username[0])
+  {
+   /*
+    * Use authenticaion information in the device URI...
+    */
+
+    if ((password = strchr(username, ':')) != NULL)
+      *password++ = '\0';
+
+    cupsSetUser(username);
+  }
+  else if (!getuid())
+  {
+   /*
+    * Try loading authentication information from the environment.
+    */
+
+    const char *ptr = getenv("AUTH_USERNAME");
+
+    if (ptr)
+      cupsSetUser(ptr);
+
+    password = getenv("AUTH_PASSWORD");
+  }
+
+ /*
+  * Try connecting to the remote server...
+  */
+
+  delay       = 5;
+  recoverable = 0;
+  start_time  = time(NULL);
+
+  fputs("STATE: +connecting-to-device\n", stderr);
+
+  do
+  {
+    fprintf(stderr, "DEBUG: Connecting to %s:%d\n", hostname, port);
+    _cupsLangPuts(stderr, _("INFO: Connecting to printer...\n"));
+
+    if ((http = httpConnectEncrypt(hostname, port, cupsEncryption())) == NULL)
+    {
+      if (job_cancelled)
+	break;
+
+      if (getenv("CLASS") != NULL)
+      {
+       /*
+        * If the CLASS environment variable is set, the job was submitted
+	* to a class and not to a specific queue.  In this case, we want
+	* to abort immediately so that the job can be requeued on the next
+	* available printer in the class.
+	*/
+
+        _cupsLangPuts(stderr,
+	              _("INFO: Unable to contact printer, queuing on next "
+			"printer in class...\n"));
+
+        if (tmpfilename[0])
+	  unlink(tmpfilename);
+
+       /*
+        * Sleep 5 seconds to keep the job from requeuing too rapidly...
+	*/
+
+	sleep(5);
+
+        return (CUPS_BACKEND_FAILED);
+      }
+
+      if (errno == ECONNREFUSED || errno == EHOSTDOWN ||
+          errno == EHOSTUNREACH)
+      {
+        if (contimeout && (time(NULL) - start_time) > contimeout)
+	{
+	  _cupsLangPuts(stderr, _("ERROR: Printer not responding!\n"));
+	  return (CUPS_BACKEND_FAILED);
+	}
+
+        recoverable = 1;
+
+	_cupsLangPrintf(stderr,
+			_("WARNING: recoverable: Network host \'%s\' is busy; "
+			  "will retry in %d seconds...\n"),
+			hostname, delay);
+
+	sleep(delay);
+
+	if (delay < 30)
+	  delay += 5;
+      }
+      else if (h_errno)
+      {
+	_cupsLangPrintf(stderr, _("ERROR: Unable to locate printer \'%s\'!\n"),
+			hostname);
+	return (CUPS_BACKEND_STOP);
+      }
+      else
+      {
+        recoverable = 1;
+
+        fprintf(stderr, "DEBUG: Connection error: %s\n", strerror(errno));
+	_cupsLangPuts(stderr,
+	              _("ERROR: recoverable: Unable to connect to printer; will "
+			"retry in 30 seconds...\n"));
+	sleep(30);
+      }
+
+      if (job_cancelled)
+	break;
+    }
+  }
+  while (http == NULL);
+
+  if (job_cancelled || !http)
+  {
+    if (tmpfilename[0])
+      unlink(tmpfilename);
+
+    return (CUPS_BACKEND_FAILED);
+  }
+
+  fputs("STATE: -connecting-to-device\n", stderr);
+  _cupsLangPuts(stderr, _("INFO: Connected to printer...\n"));
+
+#ifdef AF_INET6
+  if (http->hostaddr->addr.sa_family == AF_INET6)
+    fprintf(stderr, "DEBUG: Connected to [%s]:%d (IPv6)...\n",
+	    httpAddrString(http->hostaddr, addrname, sizeof(addrname)),
+	    ntohs(http->hostaddr->ipv6.sin6_port));
+  else
+#endif /* AF_INET6 */
+    if (http->hostaddr->addr.sa_family == AF_INET)
+      fprintf(stderr, "DEBUG: Connected to %s:%d (IPv4)...\n",
+	      httpAddrString(http->hostaddr, addrname, sizeof(addrname)),
+	      ntohs(http->hostaddr->ipv4.sin_port));
+
+ /*
+  * See if the printer supports SNMP...
+  */
+
+  if ((snmp_fd = _cupsSNMPOpen(http->hostaddr->addr.sa_family)) >= 0)
+    have_supplies = !backendSNMPSupplies(snmp_fd, http->hostaddr, &start_count,
+                                         NULL);
+  else
+    have_supplies = start_count = 0;
+
+ /*
+  * Build a URI for the printer and fill the standard IPP attributes for
+  * an IPP_PRINT_FILE request.  We can't use the URI in argv[0] because it
+  * might contain username:password information...
+  */
+
+  httpAssembleURI(HTTP_URI_CODING_ALL, uri, sizeof(uri), scheme, NULL, hostname,
+		  port, resource);
+
+ /*
+  * First validate the destination and see if the device supports multiple
+  * copies.  We have to do this because some IPP servers (e.g. HP JetDirect)
+  * don't support the copies attribute...
+  */
+
+  copies_sup = NULL;
+  format_sup = NULL;
+  supported  = NULL;
+
+  do
+  {
+   /*
+    * Check for side-channel requests...
+    */
+
+    backendCheckSideChannel(snmp_fd, http->hostaddr);
+
+   /*
+    * Build the IPP request...
+    */
+
+    request = ippNewRequest(IPP_GET_PRINTER_ATTRIBUTES);
+    request->request.op.version[0] = version / 10;
+    request->request.op.version[1] = version % 10;
+
+    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
+        	 NULL, uri);
+
+    ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                  "requested-attributes", sizeof(pattrs) / sizeof(pattrs[0]),
+		  NULL, pattrs);
+
+   /*
+    * Do the request...
+    */
+
+    fputs("DEBUG: Getting supported attributes...\n", stderr);
+
+    if (http->version < HTTP_1_1)
+      httpReconnect(http);
+
+    if ((supported = cupsDoRequest(http, request, resource)) == NULL)
+      ipp_status = cupsLastError();
+    else
+      ipp_status = supported->request.status.status_code;
+
+    if (ipp_status > IPP_OK_CONFLICT)
+    {
+      if (ipp_status == IPP_PRINTER_BUSY ||
+	  ipp_status == IPP_SERVICE_UNAVAILABLE)
+      {
+        if (contimeout && (time(NULL) - start_time) > contimeout)
+	{
+	  _cupsLangPuts(stderr, _("ERROR: Printer not responding!\n"));
+	  return (CUPS_BACKEND_FAILED);
+	}
+
+        recoverable = 1;
+
+	_cupsLangPrintf(stderr,
+			_("WARNING: recoverable: Network host \'%s\' is busy; "
+			  "will retry in %d seconds...\n"),
+			hostname, delay);
+
+        report_printer_state(supported, 0);
+
+	sleep(delay);
+
+	if (delay < 30)
+	  delay += 5;
+      }
+      else if ((ipp_status == IPP_BAD_REQUEST ||
+	        ipp_status == IPP_VERSION_NOT_SUPPORTED) && version > 10)
+      {
+       /*
+	* Switch to IPP/1.0...
+	*/
+
+	_cupsLangPrintf(stderr,
+	                _("INFO: Printer does not support IPP/%d.%d, trying "
+		          "IPP/1.0...\n"), version / 10, version % 10);
+	version = 10;
+	httpReconnect(http);
+      }
+      else if (ipp_status == IPP_NOT_FOUND)
+      {
+        _cupsLangPuts(stderr, _("ERROR: Destination printer does not exist!\n"));
+
+	if (supported)
+          ippDelete(supported);
+
+	return (CUPS_BACKEND_STOP);
+      }
+      else if (ipp_status == IPP_NOT_AUTHORIZED || ipp_status == IPP_FORBIDDEN)
+      {
+	if (!strncmp(httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE),
+		     "Negotiate", 9))
+	  auth_info_required = "negotiate";
+
+	fprintf(stderr, "ATTR: auth-info-required=%s\n", auth_info_required);
+	return (CUPS_BACKEND_AUTH_REQUIRED);
+      }
+      else
+      {
+	_cupsLangPrintf(stderr,
+	                _("ERROR: Unable to get printer status (%s)!\n"),
+			cupsLastErrorString());
+        sleep(10);
+      }
+
+      if (supported)
+        ippDelete(supported);
+
+      continue;
+    }
+    else if ((copies_sup = ippFindAttribute(supported, "copies-supported",
+	                                    IPP_TAG_RANGE)) != NULL)
+    {
+     /*
+      * Has the "copies-supported" attribute - does it have an upper
+      * bound > 1?
+      */
+
+      if (copies_sup->values[0].range.upper <= 1)
+	copies_sup = NULL; /* No */
+    }
+
+    format_sup = ippFindAttribute(supported, "document-format-supported",
+	                          IPP_TAG_MIMETYPE);
+
+    if (format_sup)
+    {
+      fprintf(stderr, "DEBUG: document-format-supported (%d values)\n",
+	      format_sup->num_values);
+      for (i = 0; i < format_sup->num_values; i ++)
+	fprintf(stderr, "DEBUG: [%d] = \"%s\"\n", i,
+	        format_sup->values[i].string.text);
+    }
+
+    report_printer_state(supported, 0);
+  }
+  while (ipp_status > IPP_OK_CONFLICT);
+
+ /*
+  * See if the printer is accepting jobs and is not stopped; if either
+  * condition is true and we are printing to a class, requeue the job...
+  */
+
+  if (getenv("CLASS") != NULL)
+  {
+    printer_state     = ippFindAttribute(supported, "printer-state",
+                                	 IPP_TAG_ENUM);
+    printer_accepting = ippFindAttribute(supported, "printer-is-accepting-jobs",
+                                	 IPP_TAG_BOOLEAN);
+
+    if (printer_state == NULL ||
+	(printer_state->values[0].integer > IPP_PRINTER_PROCESSING &&
+	 waitprinter) ||
+	printer_accepting == NULL ||
+	!printer_accepting->values[0].boolean)
+    {
+     /*
+      * If the CLASS environment variable is set, the job was submitted
+      * to a class and not to a specific queue.  In this case, we want
+      * to abort immediately so that the job can be requeued on the next
+      * available printer in the class.
+      */
+
+      _cupsLangPuts(stderr,
+                    _("INFO: Unable to contact printer, queuing on next "
+		      "printer in class...\n"));
+
+      ippDelete(supported);
+      httpClose(http);
+
+      if (tmpfilename[0])
+	unlink(tmpfilename);
+
+     /*
+      * Sleep 5 seconds to keep the job from requeuing too rapidly...
+      */
+
+      sleep(5);
+
+      return (CUPS_BACKEND_FAILED);
+    }
+  }
+
+  if (recoverable)
+  {
+   /*
+    * If we've shown a recoverable error make sure the printer proxies
+    * have a chance to see the recovered message. Not pretty but
+    * necessary for now...
+    */
+
+    fputs("INFO: recovered: \n", stderr);
+    sleep(5);
+  }
+
+ /*
+  * See if the printer supports multiple copies...
+  */
+
+  copies = atoi(argv[4]);
+
+  if (copies_sup || argc < 7)
+  {
+    copies_remaining = 1;
+
+    if (argc < 7)
+      copies = 1;
+  }
+  else
+    copies_remaining = copies;
+
+ /*
+  * Then issue the print-job request...
+  */
+
+  job_id  = 0;
+
+  while (copies_remaining > 0)
+  {
+   /*
+    * Check for side-channel requests...
+    */
+
+    backendCheckSideChannel(snmp_fd, http->hostaddr);
+
+   /*
+    * Build the IPP request...
+    */
+
+    if (job_cancelled)
+      break;
+
+    if (num_files > 1)
+      request = ippNewRequest(IPP_CREATE_JOB);
+    else
+      request = ippNewRequest(IPP_PRINT_JOB);
+
+    request->request.op.version[0] = version / 10;
+    request->request.op.version[1] = version % 10;
+
+    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
+        	 NULL, uri);
+
+    fprintf(stderr, "DEBUG: printer-uri = \"%s\"\n", uri);
+
+    if (argv[2][0])
+      ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+                   "requesting-user-name", NULL, argv[2]);
+
+    fprintf(stderr, "DEBUG: requesting-user-name = \"%s\"\n", argv[2]);
+
+   /*
+    * Only add a "job-name" attribute if the remote server supports
+    * copy generation - some IPP implementations like HP's don't seem
+    * to like UTF-8 job names (STR #1837)...
+    */
+
+    if (argv[3][0] && copies_sup)
+      ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
+        	   argv[3]);
+
+    fprintf(stderr, "DEBUG: job-name = \"%s\"\n", argv[3]);
+
+#ifdef HAVE_LIBZ
+    if (compression)
+      ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                   "compression", NULL, "gzip");
+#endif /* HAVE_LIBZ */
+
+   /*
+    * Handle options on the command-line...
+    */
+
+    options     = NULL;
+    num_options = cupsParseOptions(argv[5], 0, &options);
+
+#ifdef __APPLE__
+    if (!strcasecmp(final_content_type, "application/pictwps") &&
+        num_files == 1)
+    {
+      if (format_sup != NULL)
+      {
+	for (i = 0; i < format_sup->num_values; i ++)
+	  if (!strcasecmp(final_content_type, format_sup->values[i].string.text))
+	    break;
+      }
+
+      if (format_sup == NULL || i >= format_sup->num_values)
+      {
+       /*
+	* Remote doesn't support "application/pictwps" (i.e. it's not MacOS X)
+	* so convert the document to PostScript...
+	*/
+
+	if (run_pictwps_filter(argv, files[0]))
+	{
+	  if (pstmpname[0])
+	    unlink(pstmpname);
+
+	  if (tmpfilename[0])
+	    unlink(tmpfilename);
+
+	  return (CUPS_BACKEND_FAILED);
+        }
+
+        files[0] = pstmpname;
+
+       /*
+	* Change the MIME type to application/postscript and change the
+	* number of copies to 1...
+	*/
+
+	final_content_type = "application/postscript";
+	copies             = 1;
+	copies_remaining   = 1;
+        send_options       = 0;
+      }
+    }
+#endif /* __APPLE__ */
+
+    if (format_sup != NULL)
+    {
+      for (i = 0; i < format_sup->num_values; i ++)
+        if (!strcasecmp(final_content_type, format_sup->values[i].string.text))
+          break;
+
+      if (i < format_sup->num_values)
+        ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE,
+	             "document-format", NULL, final_content_type);
+    }
+
+    if (copies_sup && version > 10 && send_options)
+    {
+     /*
+      * Only send options if the destination printer supports the copies
+      * attribute and IPP/1.1.  This is a hack for the HP and Lexmark
+      * implementations of IPP, which do not accept extension attributes
+      * and incorrectly report a client-error-bad-request error instead of
+      * the successful-ok-unsupported-attributes status.  In short, at least
+      * some HP and Lexmark implementations of IPP are non-compliant.
+      */
+
+      cupsEncodeOptions(request, num_options, options);
+
+      ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_INTEGER, "copies",
+                    copies);
+    }
+
+    cupsFreeOptions(num_options, options);
+
+   /*
+    * If copies aren't supported, then we are likely dealing with an HP
+    * JetDirect.  The HP IPP implementation seems to close the connection
+    * after every request - that is, it does *not* implement HTTP Keep-
+    * Alive, which is REQUIRED by HTTP/1.1...
+    */
+
+    if (!copies_sup)
+      httpReconnect(http);
+
+   /*
+    * Do the request...
+    */
+
+    if (http->version < HTTP_1_1)
+      httpReconnect(http);
+
+    if (num_files > 1)
+      response = cupsDoRequest(http, request, resource);
+    else
+      response = cupsDoFileRequest(http, request, resource, files[0]);
+
+    ipp_status = cupsLastError();
+
+    if (ipp_status > IPP_OK_CONFLICT)
+    {
+      job_id = 0;
+
+      if (job_cancelled)
+        break;
+
+      if (ipp_status == IPP_SERVICE_UNAVAILABLE ||
+	  ipp_status == IPP_PRINTER_BUSY)
+      {
+        _cupsLangPuts(stderr,
+	              _("INFO: Printer busy; will retry in 10 seconds...\n"));
+	sleep(10);
+      }
+      else if ((ipp_status == IPP_BAD_REQUEST ||
+	        ipp_status == IPP_VERSION_NOT_SUPPORTED) && version > 10)
+      {
+       /*
+	* Switch to IPP/1.0...
+	*/
+
+	_cupsLangPrintf(stderr,
+	                _("INFO: Printer does not support IPP/%d.%d, trying "
+		          "IPP/1.0...\n"), version / 10, version % 10);
+	version = 10;
+	httpReconnect(http);
+      }
+      else
+      {
+       /*
+	* Update auth-info-required as needed...
+	*/
+
+        _cupsLangPrintf(stderr, _("ERROR: Print file was not accepted (%s)!\n"),
+			cupsLastErrorString());
+
+	if (ipp_status == IPP_NOT_AUTHORIZED || ipp_status == IPP_FORBIDDEN)
+	{
+	  fprintf(stderr, "DEBUG: WWW-Authenticate=\"%s\"\n",
+		  httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE));
+
+         /*
+	  * Normal authentication goes through the password callback, which sets
+	  * auth_info_required to "username,password".  Kerberos goes directly
+	  * through GSSAPI, so look for Negotiate in the WWW-Authenticate header
+	  * here and set auth_info_required as needed...
+	  */
+
+	  if (!strncmp(httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE),
+		       "Negotiate", 9))
+	    auth_info_required = "negotiate";
+	}
+      }
+    }
+    else if ((job_id_attr = ippFindAttribute(response, "job-id",
+                                             IPP_TAG_INTEGER)) == NULL)
+    {
+      _cupsLangPuts(stderr,
+                    _("NOTICE: Print file accepted - job ID unknown.\n"));
+      job_id = 0;
+    }
+    else
+    {
+      job_id = job_id_attr->values[0].integer;
+      _cupsLangPrintf(stderr, _("NOTICE: Print file accepted - job ID %d.\n"),
+                      job_id);
+    }
+
+    ippDelete(response);
+
+    if (job_cancelled)
+      break;
+
+    if (job_id && num_files > 1)
+    {
+      for (i = 0; i < num_files; i ++)
+      {
+       /*
+	* Check for side-channel requests...
+	*/
+
+	backendCheckSideChannel(snmp_fd, http->hostaddr);
+
+       /*
+        * Send the next file in the job...
+	*/
+
+	request = ippNewRequest(IPP_SEND_DOCUMENT);
+	request->request.op.version[0] = version / 10;
+	request->request.op.version[1] = version % 10;
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
+        	     NULL, uri);
+
+        ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id",
+	              job_id);
+
+	if (argv[2][0])
+	  ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+                       "requesting-user-name", NULL, argv[2]);
+
+        if ((i + 1) == num_files)
+	  ippAddBoolean(request, IPP_TAG_OPERATION, "last-document", 1);
+
+        ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE,
+	             "document-format", NULL, content_type);
+
+	if (http->version < HTTP_1_1)
+	  httpReconnect(http);
+
+        ippDelete(cupsDoFileRequest(http, request, resource, files[i]));
+
+	if (cupsLastError() > IPP_OK_CONFLICT)
+	{
+	  ipp_status = cupsLastError();
+
+	  _cupsLangPrintf(stderr,
+			  _("ERROR: Unable to add file %d to job: %s\n"),
+			  job_id, cupsLastErrorString());
+	  break;
+	}
+      }
+    }
+
+    if (ipp_status <= IPP_OK_CONFLICT && argc > 6)
+    {
+      fprintf(stderr, "PAGE: 1 %d\n", copies_sup ? atoi(argv[4]) : 1);
+      copies_remaining --;
+    }
+    else if (ipp_status == IPP_SERVICE_UNAVAILABLE ||
+	     ipp_status == IPP_PRINTER_BUSY)
+      continue;
+    else
+      copies_remaining --;
+
+   /*
+    * Wait for the job to complete...
+    */
+
+    if (!job_id || !waitjob)
+      continue;
+
+    _cupsLangPuts(stderr, _("INFO: Waiting for job to complete...\n"));
+
+    for (delay = 1; !job_cancelled;)
+    {
+     /*
+      * Check for side-channel requests...
+      */
+
+      backendCheckSideChannel(snmp_fd, http->hostaddr);
+
+     /*
+      * Build an IPP_GET_JOB_ATTRIBUTES request...
+      */
+
+      request = ippNewRequest(IPP_GET_JOB_ATTRIBUTES);
+      request->request.op.version[0] = version / 10;
+      request->request.op.version[1] = version % 10;
+
+      ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
+        	   NULL, uri);
+
+      ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id",
+        	    job_id);
+
+      if (argv[2][0])
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+	             "requesting-user-name", NULL, argv[2]);
+
+      ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                    "requested-attributes", sizeof(jattrs) / sizeof(jattrs[0]),
+		    NULL, jattrs);
+
+     /*
+      * Do the request...
+      */
+
+      if (!copies_sup || http->version < HTTP_1_1)
+	httpReconnect(http);
+
+      response   = cupsDoRequest(http, request, resource);
+      ipp_status = cupsLastError();
+
+      if (ipp_status == IPP_NOT_FOUND)
+      {
+       /*
+        * Job has gone away and/or the server has no job history...
+	*/
+
+        ippDelete(response);
+
+	ipp_status = IPP_OK;
+        break;
+      }
+
+      if (ipp_status > IPP_OK_CONFLICT)
+      {
+	if (ipp_status != IPP_SERVICE_UNAVAILABLE &&
+	    ipp_status != IPP_PRINTER_BUSY)
+	{
+	  ippDelete(response);
+
+          _cupsLangPrintf(stderr,
+			  _("ERROR: Unable to get job %d attributes (%s)!\n"),
+			  job_id, cupsLastErrorString());
+          break;
+	}
+      }
+
+      if (response)
+      {
+	if ((job_state = ippFindAttribute(response, "job-state",
+	                                  IPP_TAG_ENUM)) != NULL)
+	{
+	 /*
+          * Stop polling if the job is finished or pending-held...
+	  */
+
+          if (job_state->values[0].integer > IPP_JOB_STOPPED)
+	  {
+	    if ((job_sheets = ippFindAttribute(response, 
+	                                       "job-media-sheets-completed",
+	                                       IPP_TAG_INTEGER)) != NULL)
+	      fprintf(stderr, "PAGE: total %d\n",
+	              job_sheets->values[0].integer);
+
+	    ippDelete(response);
+	    break;
+	  }
+	}
+	else
+	{
+	 /*
+	  * If the printer does not return a job-state attribute, it does not
+	  * conform to the IPP specification - break out immediately and fail
+	  * the job...
+	  */
+
+          fputs("DEBUG: No job-state available from printer - stopping queue.\n",
+	        stderr);
+	  ipp_status = IPP_INTERNAL_ERROR;
+	  break;
+	}
+      }
+
+      ippDelete(response);
+
+     /*
+      * Check the printer state and report it if necessary...
+      */
+
+      check_printer_state(http, uri, resource, argv[2], version, job_id);
+
+     /*
+      * Wait 1-10 seconds before polling again...
+      */
+
+      sleep(delay);
+
+      delay ++;
+      if (delay > 10)
+        delay = 1;
+    }
+  }
+
+ /*
+  * Cancel the job as needed...
+  */
+
+  if (job_cancelled && job_id)
+    cancel_job(http, uri, job_id, resource, argv[2], version);
+
+ /*
+  * Check the printer state and report it if necessary...
+  */
+
+  check_printer_state(http, uri, resource, argv[2], version, job_id);
+
+ /*
+  * Collect the final page count as needed...
+  */
+
+  if (have_supplies && 
+      !backendSNMPSupplies(snmp_fd, http->hostaddr, &page_count, NULL) &&
+      page_count > start_count)
+    fprintf(stderr, "PAGE: total %d\n", page_count - start_count);
+
+#ifdef HAVE_GSSAPI
+ /*
+  * See if we used Kerberos at all...
+  */
+
+  if (http->gssctx)
+    auth_info_required = "negotiate";
+#endif /* HAVE_GSSAPI */
+
+ /*
+  * Free memory...
+  */
+
+  httpClose(http);
+
+  ippDelete(supported);
+
+ /*
+  * Remove the temporary file(s) if necessary...
+  */
+
+  if (tmpfilename[0])
+    unlink(tmpfilename);
+
+#ifdef HAVE_LIBZ
+  if (compression)
+  {
+    for (i = 0; i < num_files; i ++)
+      unlink(files[i]);
+  }
+#endif /* HAVE_LIBZ */
+
+#ifdef __APPLE__
+  if (pstmpname[0])
+    unlink(pstmpname);
+#endif /* __APPLE__ */
+
+ /*
+  * Return the queue status...
+  */
+
+  fprintf(stderr, "ATTR: auth-info-required=%s\n", auth_info_required);
+
+  if (ipp_status == IPP_NOT_AUTHORIZED || ipp_status == IPP_FORBIDDEN)
+    return (CUPS_BACKEND_AUTH_REQUIRED);
+  else if (ipp_status == IPP_INTERNAL_ERROR)
+    return (CUPS_BACKEND_STOP);
+  else if (ipp_status > IPP_OK_CONFLICT)
+    return (CUPS_BACKEND_FAILED);
+  else
+  {
+    _cupsLangPuts(stderr, _("INFO: Ready to print.\n"));
+    return (CUPS_BACKEND_OK);
+  }
+}
+
+
+/*
+ * 'cancel_job()' - Cancel a print job.
+ */
+
+static void
+cancel_job(http_t     *http,		/* I - HTTP connection */
+           const char *uri,		/* I - printer-uri */
+	   int        id,		/* I - job-id */
+	   const char *resource,	/* I - Resource path */
+	   const char *user,		/* I - requesting-user-name */
+	   int        version)		/* I - IPP version */
+{
+  ipp_t	*request;			/* Cancel-Job request */
+
+
+  _cupsLangPuts(stderr, _("INFO: Canceling print job...\n"));
+
+  request = ippNewRequest(IPP_CANCEL_JOB);
+  request->request.op.version[0] = version / 10;
+  request->request.op.version[1] = version % 10;
+
+  ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
+               NULL, uri);
+  ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", id);
+
+  if (user && user[0])
+    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+                 "requesting-user-name", NULL, user);
+
+ /*
+  * Do the request...
+  */
+
+  if (http->version < HTTP_1_1)
+    httpReconnect(http);
+
+  ippDelete(cupsDoRequest(http, request, resource));
+
+  if (cupsLastError() > IPP_OK_CONFLICT)
+    _cupsLangPrintf(stderr, _("ERROR: Unable to cancel job %d: %s\n"), id,
+		    cupsLastErrorString());
+}
+
+
+/*
+ * 'check_printer_state()' - Check the printer state...
+ */
+
+static void
+check_printer_state(
+    http_t      *http,			/* I - HTTP connection */
+    const char  *uri,			/* I - Printer URI */
+    const char  *resource,		/* I - Resource path */
+    const char  *user,			/* I - Username, if any */
+    int         version,		/* I - IPP version */
+    int         job_id)			/* I - Current job ID */
+{
+  ipp_t	*request,			/* IPP request */
+	*response;			/* IPP response */
+  static const char * const attrs[] =	/* Attributes we want */
+  {
+    "com.apple.print.recoverable-message",
+    "marker-colors",
+    "marker-levels",
+    "marker-message",
+    "marker-names",
+    "marker-types",
+    "printer-state-message",
+    "printer-state-reasons"
+  };
+
+
+ /*
+  * Check on the printer state...
+  */
+
+  request = ippNewRequest(IPP_GET_PRINTER_ATTRIBUTES);
+  request->request.op.version[0] = version / 10;
+  request->request.op.version[1] = version % 10;
+
+  ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
+               NULL, uri);
+
+  if (user && user[0])
+    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+                 "requesting-user-name", NULL, user);
+
+  ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                "requested-attributes",
+		(int)(sizeof(attrs) / sizeof(attrs[0])), NULL, attrs);
+
+ /*
+  * Do the request...
+  */
+
+  if (http->version < HTTP_1_1)
+    httpReconnect(http);
+
+  if ((response = cupsDoRequest(http, request, resource)) != NULL)
+  {
+    report_printer_state(response, job_id);
+    ippDelete(response);
+  }
+}
+
+
+#ifdef HAVE_LIBZ
+/*
+ * 'compress_files()' - Compress print files...
+ */
+
+static void
+compress_files(int  num_files,		/* I - Number of files */
+               char **files)		/* I - Files */
+{
+  int		i,			/* Looping var */
+		fd;			/* Temporary file descriptor */
+  ssize_t	bytes;			/* Bytes read/written */
+  size_t	total;			/* Total bytes read */
+  cups_file_t	*in,			/* Input file */
+		*out;			/* Output file */
+  struct stat	outinfo;		/* Output file information */
+  char		filename[1024],		/* Temporary filename */
+		buffer[32768];		/* Copy buffer */
+
+
+  fprintf(stderr, "DEBUG: Compressing %d job files...\n", num_files);
+  for (i = 0; i < num_files; i ++)
+  {
+    if ((fd = cupsTempFd(filename, sizeof(filename))) < 0)
+    {
+      _cupsLangPrintf(stderr,
+		      _("ERROR: Unable to create temporary compressed print "
+		        "file: %s\n"), strerror(errno));
+      exit(CUPS_BACKEND_FAILED);
+    }
+
+    if ((out = cupsFileOpenFd(fd, "w9")) == NULL)
+    {
+      _cupsLangPrintf(stderr,
+		      _("ERROR: Unable to open temporary compressed print "
+		        "file: %s\n"), strerror(errno));
+      exit(CUPS_BACKEND_FAILED);
+    }
+
+    if ((in = cupsFileOpen(files[i], "r")) == NULL)
+    {
+      _cupsLangPrintf(stderr,
+                      _("ERROR: Unable to open print file \"%s\": %s\n"),
+		      files[i], strerror(errno));
+      cupsFileClose(out);
+      exit(CUPS_BACKEND_FAILED);
+    }
+
+    total = 0;
+    while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
+      if (cupsFileWrite(out, buffer, bytes) < bytes)
+      {
+        _cupsLangPrintf(stderr,
+		        _("ERROR: Unable to write %d bytes to \"%s\": %s\n"),
+			(int)bytes, filename, strerror(errno));
+        cupsFileClose(in);
+        cupsFileClose(out);
+	exit(CUPS_BACKEND_FAILED);
+      }
+      else
+        total += bytes;
+
+    cupsFileClose(out);
+    cupsFileClose(in);
+
+    files[i] = strdup(filename);
+
+    if (!stat(filename, &outinfo))
+      fprintf(stderr,
+              "DEBUG: File %d compressed to %.1f%% of original size, "
+	      CUPS_LLFMT " bytes...\n",
+              i + 1, 100.0 * outinfo.st_size / total,
+	      CUPS_LLCAST outinfo.st_size);
+  }
+}
+#endif /* HAVE_LIBZ */
+
+
+/*
+ * 'password_cb()' - Disable the password prompt for cupsDoFileRequest().
+ */
+
+static const char *			/* O - Password  */
+password_cb(const char *prompt)		/* I - Prompt (not used) */
+{
+  (void)prompt;
+
+ /*
+  * Remember that we need to authenticate...
+  */
+
+  auth_info_required = "username,password";
+
+  if (password && *password && password_tries < 3)
+  {
+    password_tries ++;
+
+    return (password);
+  }
+  else
+  {
+   /*
+    * Give up after 3 tries or if we don't have a password to begin with...
+    */
+
+    return (NULL);
+  }
+}
+
+
+/*
+ * 'report_attr()' - Report an IPP attribute value.
+ */
+
+static void
+report_attr(ipp_attribute_t *attr)	/* I - Attribute */
+{
+  int	i;				/* Looping var */
+  char	value[1024],			/* Value string */
+	*valptr,			/* Pointer into value string */
+	*attrptr;			/* Pointer into attribute value */
+
+
+ /*
+  * Convert the attribute values into quoted strings...
+  */
+
+  for (i = 0, valptr = value;
+       i < attr->num_values && valptr < (value + sizeof(value) - 10);
+       i ++)
+  {
+    if (i > 0)
+      *valptr++ = ',';
+
+    switch (attr->value_tag)
+    {
+      case IPP_TAG_INTEGER :
+      case IPP_TAG_ENUM :
+          snprintf(valptr, sizeof(value) - (valptr - value), "%d",
+	           attr->values[i].integer);
+	  valptr += strlen(valptr);
+	  break;
+
+      case IPP_TAG_TEXT :
+      case IPP_TAG_NAME :
+      case IPP_TAG_KEYWORD :
+          *valptr++ = '\"';
+	  for (attrptr = attr->values[i].string.text;
+	       *attrptr && valptr < (value + sizeof(value) - 10);
+	       attrptr ++)
+	  {
+	    if (*attrptr == '\\' || *attrptr == '\"')
+	      *valptr++ = '\\';
+
+	    *valptr++ = *attrptr;
+	  }
+          *valptr++ = '\"';
+          break;
+
+      default :
+         /*
+	  * Unsupported value type...
+	  */
+
+          return;
+    }
+  }
+
+  *valptr = '\0';
+
+ /*
+  * Tell the scheduler about the new values...
+  */
+
+  fprintf(stderr, "ATTR: %s=%s\n", attr->name, value);
+}
+
+
+/*
+ * 'report_printer_state()' - Report the printer state.
+ */
+
+static int				/* O - Number of reasons shown */
+report_printer_state(ipp_t *ipp,	/* I - IPP response */
+                     int   job_id)	/* I - Current job ID */
+{
+  int			i;		/* Looping var */
+  int			count;		/* Count of reasons shown... */
+  ipp_attribute_t	*caprm,		/* com.apple.print.recoverable-message */
+			*psm,		/* printer-state-message */
+			*reasons,	/* printer-state-reasons */
+			*marker;	/* marker-* attributes */
+  const char		*reason;	/* Current reason */
+  const char		*prefix;	/* Prefix for STATE: line */
+  char			state[1024];	/* State string */
+  int			saw_caprw;	/* Saw com.apple.print.recoverable-warning state */
+
+
+  if ((psm = ippFindAttribute(ipp, "printer-state-message",
+                              IPP_TAG_TEXT)) != NULL)
+    fprintf(stderr, "INFO: %s\n", psm->values[0].string.text);
+
+  if ((reasons = ippFindAttribute(ipp, "printer-state-reasons",
+                                  IPP_TAG_KEYWORD)) == NULL)
+    return (0);
+
+  saw_caprw = 0;
+  state[0]  = '\0';
+  prefix    = "STATE: ";
+
+  for (i = 0, count = 0; i < reasons->num_values; i ++)
+  {
+    reason = reasons->values[i].string.text;
+
+    if (!strcmp(reason, "com.apple.print.recoverable-warning"))
+      saw_caprw = 1;
+    else if (strcmp(reason, "paused"))
+    {
+      strlcat(state, prefix, sizeof(state));
+      strlcat(state, reason, sizeof(state));
+
+      prefix  = ",";
+    }
+  }
+
+  if (state[0])
+    fprintf(stderr, "%s\n", state);
+
+ /*
+  * Relay com.apple.print.recoverable-message...
+  */
+
+  if ((caprm = ippFindAttribute(ipp, "com.apple.print.recoverable-message",
+                                IPP_TAG_TEXT)) != NULL)
+    fprintf(stderr, "WARNING: %s: %s\n",
+            saw_caprw ? "recoverable" : "recovered",
+	    caprm->values[0].string.text);
+
+ /*
+  * Relay the current marker-* attribute values...
+  */
+
+  if ((marker = ippFindAttribute(ipp, "marker-colors", IPP_TAG_NAME)) != NULL)
+    report_attr(marker);
+  if ((marker = ippFindAttribute(ipp, "marker-high-levels",
+                                 IPP_TAG_INTEGER)) != NULL)
+    report_attr(marker);
+  if ((marker = ippFindAttribute(ipp, "marker-levels",
+                                 IPP_TAG_INTEGER)) != NULL)
+    report_attr(marker);
+  if ((marker = ippFindAttribute(ipp, "marker-low-levels",
+                                 IPP_TAG_INTEGER)) != NULL)
+    report_attr(marker);
+  if ((marker = ippFindAttribute(ipp, "marker-message", IPP_TAG_TEXT)) != NULL)
+    report_attr(marker);
+  if ((marker = ippFindAttribute(ipp, "marker-names", IPP_TAG_NAME)) != NULL)
+    report_attr(marker);
+  if ((marker = ippFindAttribute(ipp, "marker-types", IPP_TAG_KEYWORD)) != NULL)
+    report_attr(marker);
+
+  return (count);
+}
+
+
+#ifdef __APPLE__
+/*
+ * 'run_pictwps_filter()' - Convert PICT files to PostScript when printing
+ *                          remotely.
+ *
+ * This step is required because the PICT format is not documented and
+ * subject to change, so developing a filter for other OS's is infeasible.
+ * Also, fonts required by the PICT file need to be embedded on the
+ * client side (which has the fonts), so we run the filter to get a
+ * PostScript file for printing...
+ */
+
+static int				/* O - Exit status of filter */
+run_pictwps_filter(char       **argv,	/* I - Command-line arguments */
+                   const char *filename)/* I - Filename */
+{
+  struct stat	fileinfo;		/* Print file information */
+  const char	*ppdfile;		/* PPD file for destination printer */
+  int		pid;			/* Child process ID */
+  int		fd;			/* Temporary file descriptor */
+  int		status;			/* Exit status of filter */
+  const char	*printer;		/* PRINTER env var */
+  static char	ppdenv[1024];		/* PPD environment variable */
+
+
+ /*
+  * First get the PPD file for the printer...
+  */
+
+  printer = getenv("PRINTER");
+  if (!printer)
+  {
+    _cupsLangPuts(stderr,
+                  _("ERROR: PRINTER environment variable not defined!\n"));
+    return (-1);
+  }
+
+  if ((ppdfile = cupsGetPPD(printer)) == NULL)
+  {
+    _cupsLangPrintf(stderr,
+		    _("ERROR: Unable to get PPD file for printer \"%s\" - "
+		      "%s.\n"), printer, cupsLastErrorString());
+  }
+  else
+  {
+    snprintf(ppdenv, sizeof(ppdenv), "PPD=%s", ppdfile);
+    putenv(ppdenv);
+  }
+
+ /*
+  * Then create a temporary file for printing...
+  */
+
+  if ((fd = cupsTempFd(pstmpname, sizeof(pstmpname))) < 0)
+  {
+    _cupsLangPrintError("ERROR", _("Unable to create temporary file"));
+    if (ppdfile)
+      unlink(ppdfile);
+    return (-1);
+  }
+
+ /*
+  * Get the owner of the spool file - it is owned by the user we want to run
+  * as...
+  */
+
+  if (argv[6])
+    stat(argv[6], &fileinfo);
+  else
+  {
+   /*
+    * Use the OSX defaults, as an up-stream filter created the PICT
+    * file...
+    */
+
+    fileinfo.st_uid = 1;
+    fileinfo.st_gid = 80;
+  }
+
+  if (ppdfile)
+    chown(ppdfile, fileinfo.st_uid, fileinfo.st_gid);
+
+  fchown(fd, fileinfo.st_uid, fileinfo.st_gid);
+
+ /*
+  * Finally, run the filter to convert the file...
+  */
+
+  if ((pid = fork()) == 0)
+  {
+   /*
+    * Child process for pictwpstops...  Redirect output of pictwpstops to a
+    * file...
+    */
+
+    dup2(fd, 1);
+    close(fd);
+
+    if (!getuid())
+    {
+     /*
+      * Change to an unpriviledged user...
+      */
+
+      if (setgid(fileinfo.st_gid))
+        return (errno);
+
+      if (setuid(fileinfo.st_uid))
+        return (errno);
+    }
+
+    execlp("pictwpstops", printer, argv[1], argv[2], argv[3], argv[4], argv[5],
+           filename, NULL);
+    _cupsLangPrintf(stderr, _("ERROR: Unable to exec pictwpstops: %s\n"),
+		    strerror(errno));
+    return (errno);
+  }
+
+  close(fd);
+
+  if (pid < 0)
+  {
+   /*
+    * Error!
+    */
+
+    _cupsLangPrintf(stderr, _("ERROR: Unable to fork pictwpstops: %s\n"),
+		    strerror(errno));
+    if (ppdfile)
+      unlink(ppdfile);
+    return (-1);
+  }
+
+ /*
+  * Now wait for the filter to complete...
+  */
+
+  if (wait(&status) < 0)
+  {
+    _cupsLangPrintf(stderr, _("ERROR: Unable to wait for pictwpstops: %s\n"),
+		    strerror(errno));
+    close(fd);
+    if (ppdfile)
+      unlink(ppdfile);
+    return (-1);
+  }
+
+  if (ppdfile)
+    unlink(ppdfile);
+
+  close(fd);
+
+  if (status)
+  {
+    if (status >= 256)
+      _cupsLangPrintf(stderr, _("ERROR: pictwpstops exited with status %d!\n"),
+		      status / 256);
+    else
+      _cupsLangPrintf(stderr, _("ERROR: pictwpstops exited on signal %d!\n"),
+		      status);
+
+    return (status);
+  }
+
+ /*
+  * Return with no errors..
+  */
+
+  return (0);
+}
+#endif /* __APPLE__ */
+
+
+/*
+ * 'sigterm_handler()' - Handle 'terminate' signals that stop the backend.
+ */
+
+static void
+sigterm_handler(int sig)		/* I - Signal */
+{
+  (void)sig;	/* remove compiler warnings... */
+
+  if (!job_cancelled)
+  {
+   /*
+    * Flag that the job should be cancelled...
+    */
+
+    job_cancelled = 1;
+    return;
+  }
+
+ /*
+  * The scheduler already tried to cancel us once, now just terminate
+  * after removing our temp files!
+  */
+
+  if (tmpfilename[0])
+    unlink(tmpfilename);
+
+#ifdef __APPLE__
+  if (pstmpname[0])
+    unlink(pstmpname);
+#endif /* __APPLE__ */
+
+  exit(1);
+}
+
+
+/*
+ * End of "$Id: ipp.c 8950 2010-01-14 22:40:19Z mike $".
+ */