scheduler/testsub.c - platform/external/libcups - Git at Google

 /*
  * Scheduler notification tester for CUPS.
  *
  * Copyright 2007-2014 by Apple Inc.
  * Copyright 2006-2007 by Easy Software Products.
  *
  * Licensed under Apache License v2.0.  See the file "LICENSE" for more information.
  */

 /*
  * Include necessary headers...
  */

 #include <cups/cups.h>
 #include <cups/debug-private.h>
 #include <cups/string-private.h>
 #include <signal.h>
 #include <cups/ipp-private.h>	/* TODO: Update so we don't need this */


 /*
  * Local globals...
  */

 static int	terminate = 0;


 /*
  * Local functions...
  */

 static void	print_attributes(ipp_t *ipp, int indent);
 static void	sigterm_handler(int sig);
 static void	usage(void) _CUPS_NORETURN;


 /*
  * 'main()' - Subscribe to the .
  */

 int
 main(int  argc,				/* I - Number of command-line arguments */
      char *argv[])			/* I - Command-line arguments */
 {
   int		i;			/* Looping var */
   const char	*uri;			/* URI to use */
   int		num_events;		/* Number of events */
   const char	*events[100];		/* Events */
   int		subscription_id,	/* notify-subscription-id */
 		sequence_number,	/* notify-sequence-number */
 		interval;		/* Interval between polls */
   http_t	*http;			/* HTTP connection */
   ipp_t		*request,		/* IPP request */
 		*response;		/* IPP response */
   ipp_attribute_t *attr;		/* Current attribute */
 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
   struct sigaction action;		/* Actions for POSIX signals */
 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */


  /*
   * Parse command-line...
   */

   num_events = 0;
   uri        = NULL;

   for (i = 1; i < argc; i ++)
     if (!strcmp(argv[i], "-E"))
       cupsSetEncryption(HTTP_ENCRYPT_REQUIRED);
     else if (!strcmp(argv[i], "-e"))
     {
       i ++;
       if (i >= argc || num_events >= 100)
         usage();

       events[num_events] = argv[i];
       num_events ++;
     }
     else if (!strcmp(argv[i], "-h"))
     {
       i ++;
       if (i >= argc)
         usage();

       cupsSetServer(argv[i]);
     }
     else if (uri || strncmp(argv[i], "ipp://", 6))
       usage();
     else
       uri = argv[i];

   if (!uri)
     usage();

   if (num_events == 0)
   {
     events[0]  = "all";
     num_events = 1;
   }

  /*
   * Connect to the server...
   */

   if ((http = httpConnectEncrypt(cupsServer(), ippPort(),
                                  cupsEncryption())) == NULL)
   {
     perror(cupsServer());
     return (1);
   }

  /*
   * Catch CTRL-C and SIGTERM...
   */

 #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
   sigset(SIGINT, sigterm_handler);
   sigset(SIGTERM, sigterm_handler);
 #elif defined(HAVE_SIGACTION)
   memset(&action, 0, sizeof(action));

   sigemptyset(&action.sa_mask);
   action.sa_handler = sigterm_handler;
   sigaction(SIGINT, &action, NULL);
   sigaction(SIGTERM, &action, NULL);
 #else
   signal(SIGINT, sigterm_handler);
   signal(SIGTERM, sigterm_handler);
 #endif /* HAVE_SIGSET */

  /*
   * Create the subscription...
   */

   if (strstr(uri, "/jobs/"))
   {
     request = ippNewRequest(IPP_CREATE_JOB_SUBSCRIPTION);
     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
   }
   else
   {
     request = ippNewRequest(IPP_CREATE_PRINTER_SUBSCRIPTION);
     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
                  uri);
   }

   ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
                NULL, cupsUser());

   ippAddStrings(request, IPP_TAG_SUBSCRIPTION, IPP_TAG_KEYWORD, "notify-events",
                 num_events, NULL, events);
   ippAddString(request, IPP_TAG_SUBSCRIPTION, IPP_TAG_KEYWORD,
                "notify-pull-method", NULL, "ippget");

   response = cupsDoRequest(http, request, uri);
   if (cupsLastError() >= IPP_BAD_REQUEST)
   {
     fprintf(stderr, "Create-%s-Subscription: %s\n",
             strstr(uri, "/jobs") ? "Job" : "Printer", cupsLastErrorString());
     ippDelete(response);
     httpClose(http);
     return (1);
   }

   if ((attr = ippFindAttribute(response, "notify-subscription-id",
                                IPP_TAG_INTEGER)) == NULL)
   {
     fputs("ERROR: No notify-subscription-id in response!\n", stderr);
     ippDelete(response);
     httpClose(http);
     return (1);
   }

   subscription_id = attr->values[0].integer;

   printf("Create-%s-Subscription: notify-subscription-id=%d\n",
          strstr(uri, "/jobs/") ? "Job" : "Printer", subscription_id);

   ippDelete(response);

  /*
   * Monitor for events...
   */

   sequence_number = 0;

   while (!terminate)
   {
    /*
     * Get the current events...
     */

     printf("\nGet-Notifications(%d,%d):", subscription_id, sequence_number);
     fflush(stdout);

     request = ippNewRequest(IPP_GET_NOTIFICATIONS);

     if (strstr(uri, "/jobs/"))
       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
     else
       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
                    uri);

     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
                  "requesting-user-name", NULL, cupsUser());

     ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
                   "notify-subscription-ids", subscription_id);
     if (sequence_number)
       ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
                     "notify-sequence-numbers", sequence_number + 1);

     response = cupsDoRequest(http, request, uri);

     printf(" %s\n", ippErrorString(cupsLastError()));

     if (cupsLastError() >= IPP_BAD_REQUEST)
       fprintf(stderr, "Get-Notifications: %s\n", cupsLastErrorString());
     else if (response)
     {
       print_attributes(response, 0);

       for (attr = ippFindAttribute(response, "notify-sequence-number",
                                    IPP_TAG_INTEGER);
            attr;
 	   attr = ippFindNextAttribute(response, "notify-sequence-number",
 	                               IPP_TAG_INTEGER))
         if (attr->values[0].integer > sequence_number)
 	  sequence_number = attr->values[0].integer;
     }

     if ((attr = ippFindAttribute(response, "notify-get-interval",
                                  IPP_TAG_INTEGER)) != NULL &&
         attr->values[0].integer > 0)
       interval = attr->values[0].integer;
     else
       interval = 5;

     ippDelete(response);
     sleep((unsigned)interval);
   }

  /*
   * Cancel the subscription...
   */

   printf("\nCancel-Subscription:");
   fflush(stdout);

   request = ippNewRequest(IPP_CANCEL_SUBSCRIPTION);

   if (strstr(uri, "/jobs/"))
     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
   else
     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
                  uri);

   ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
                NULL, cupsUser());

   ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
                 "notify-subscription-id", subscription_id);

   ippDelete(cupsDoRequest(http, request, uri));

   printf(" %s\n", ippErrorString(cupsLastError()));

   if (cupsLastError() >= IPP_BAD_REQUEST)
     fprintf(stderr, "Cancel-Subscription: %s\n", cupsLastErrorString());

  /*
   * Close the connection and return...
   */

   httpClose(http);

   return (0);
 }


 /*
  * 'print_attributes()' - Print the attributes in a request...
  */

 static void
 print_attributes(ipp_t *ipp,		/* I - IPP request */
                  int   indent)		/* I - Indentation */
 {
   int			i;		/* Looping var */
   ipp_tag_t		group;		/* Current group */
   ipp_attribute_t	*attr;		/* Current attribute */
   _ipp_value_t		*val;		/* Current value */
   static const char * const tags[] =	/* Value/group tag strings */
 			{
 			  "reserved-00",
 			  "operation-attributes-tag",
 			  "job-attributes-tag",
 			  "end-of-attributes-tag",
 			  "printer-attributes-tag",
 			  "unsupported-attributes-tag",
 			  "subscription-attributes-tag",
 			  "event-attributes-tag",
 			  "reserved-08",
 			  "reserved-09",
 			  "reserved-0A",
 			  "reserved-0B",
 			  "reserved-0C",
 			  "reserved-0D",
 			  "reserved-0E",
 			  "reserved-0F",
 			  "unsupported",
 			  "default",
 			  "unknown",
 			  "no-value",
 			  "reserved-14",
 			  "not-settable",
 			  "delete-attr",
 			  "admin-define",
 			  "reserved-18",
 			  "reserved-19",
 			  "reserved-1A",
 			  "reserved-1B",
 			  "reserved-1C",
 			  "reserved-1D",
 			  "reserved-1E",
 			  "reserved-1F",
 			  "reserved-20",
 			  "integer",
 			  "boolean",
 			  "enum",
 			  "reserved-24",
 			  "reserved-25",
 			  "reserved-26",
 			  "reserved-27",
 			  "reserved-28",
 			  "reserved-29",
 			  "reserved-2a",
 			  "reserved-2b",
 			  "reserved-2c",
 			  "reserved-2d",
 			  "reserved-2e",
 			  "reserved-2f",
 			  "octetString",
 			  "dateTime",
 			  "resolution",
 			  "rangeOfInteger",
 			  "begCollection",
 			  "textWithLanguage",
 			  "nameWithLanguage",
 			  "endCollection",
 			  "reserved-38",
 			  "reserved-39",
 			  "reserved-3a",
 			  "reserved-3b",
 			  "reserved-3c",
 			  "reserved-3d",
 			  "reserved-3e",
 			  "reserved-3f",
 			  "reserved-40",
 			  "textWithoutLanguage",
 			  "nameWithoutLanguage",
 			  "reserved-43",
 			  "keyword",
 			  "uri",
 			  "uriScheme",
 			  "charset",
 			  "naturalLanguage",
 			  "mimeMediaType",
 			  "memberName"
 			};


   for (group = IPP_TAG_ZERO, attr = ipp->attrs; attr; attr = attr->next)
   {
     if ((attr->group_tag == IPP_TAG_ZERO && indent <= 8) || !attr->name)
     {
       group = IPP_TAG_ZERO;
       putchar('\n');
       continue;
     }

     if (group != attr->group_tag)
     {
       group = attr->group_tag;

       putchar('\n');
       for (i = 4; i < indent; i ++)
         putchar(' ');

       printf("%s:\n\n", tags[group]);
     }

     for (i = 0; i < indent; i ++)
       putchar(' ');

     printf("%s (", attr->name);
     if (attr->num_values > 1)
       printf("1setOf ");
     printf("%s):", tags[attr->value_tag]);

     switch (attr->value_tag)
     {
       case IPP_TAG_ENUM :
       case IPP_TAG_INTEGER :
           for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	    printf(" %d", val->integer);
           putchar('\n');
           break;

       case IPP_TAG_BOOLEAN :
           for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	    printf(" %s", val->boolean ? "true" : "false");
           putchar('\n');
           break;

       case IPP_TAG_RANGE :
           for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	    printf(" %d-%d", val->range.lower, val->range.upper);
           putchar('\n');
           break;

       case IPP_TAG_DATE :
           {
 	    char	vstring[256];	/* Formatted time */

 	    for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	      printf(" (%s)", _cupsStrDate(vstring, sizeof(vstring), ippDateToTime(val->date)));
           }
           putchar('\n');
           break;

       case IPP_TAG_RESOLUTION :
           for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	    printf(" %dx%d%s", val->resolution.xres, val->resolution.yres,
 	           val->resolution.units == IPP_RES_PER_INCH ? "dpi" : "dpcm");
           putchar('\n');
           break;

       case IPP_TAG_STRING :
       case IPP_TAG_TEXTLANG :
       case IPP_TAG_NAMELANG :
       case IPP_TAG_TEXT :
       case IPP_TAG_NAME :
       case IPP_TAG_KEYWORD :
       case IPP_TAG_URI :
       case IPP_TAG_URISCHEME :
       case IPP_TAG_CHARSET :
       case IPP_TAG_LANGUAGE :
       case IPP_TAG_MIMETYPE :
           for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	    printf(" \"%s\"", val->string.text);
           putchar('\n');
           break;

       case IPP_TAG_BEGIN_COLLECTION :
           putchar('\n');

           for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
 	  {
 	    if (i)
 	      putchar('\n');
 	    print_attributes(val->collection, indent + 4);
 	  }
           break;

       default :
           printf("UNKNOWN (%d values)\n", attr->num_values);
           break;
     }
   }
 }


 /*
  * 'sigterm_handler()' - Flag when the user hits CTRL-C...
  */

 static void
 sigterm_handler(int sig)		/* I - Signal number (unused) */
 {
   (void)sig;

   terminate = 1;
 }


 /*
  * 'usage()' - Show program usage...
  */

 static void
 usage(void)
 {
   puts("Usage: testsub [-E] [-e event ... -e eventN] [-h hostname] URI");
   exit(0);
 }
	/*
	* Scheduler notification tester for CUPS.
	*
	* Copyright 2007-2014 by Apple Inc.
	* Copyright 2006-2007 by Easy Software Products.
	*
	* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
	*/

	/*
	* Include necessary headers...
	*/

	#include <cups/cups.h>
	#include <cups/debug-private.h>
	#include <cups/string-private.h>
	#include <signal.h>
	#include <cups/ipp-private.h> /* TODO: Update so we don't need this */


	/*
	* Local globals...
	*/

	static int terminate = 0;


	/*
	* Local functions...
	*/

	static void print_attributes(ipp_t *ipp, int indent);
	static void sigterm_handler(int sig);
	static void usage(void) _CUPS_NORETURN;


	/*
	* 'main()' - Subscribe to the .
	*/

	int
	main(int argc, /* I - Number of command-line arguments */
	char argv[]) / I - Command-line arguments */
	{
	int i; /* Looping var */
	const char uri; / URI to use */
	int num_events; /* Number of events */
	const char events[100]; / Events */
	int subscription_id, /* notify-subscription-id */
	sequence_number, /* notify-sequence-number */
	interval; /* Interval between polls */
	http_t http; / HTTP connection */
	ipp_t request, / IPP request */
	response; / IPP response */
	ipp_attribute_t attr; / Current attribute */
	#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
	struct sigaction action; /* Actions for POSIX signals */
	#endif /* HAVE_SIGACTION && !HAVE_SIGSET */


	/*
	* Parse command-line...
	*/

	num_events = 0;
	uri = NULL;

	for (i = 1; i < argc; i ++)
	if (!strcmp(argv[i], "-E"))
	cupsSetEncryption(HTTP_ENCRYPT_REQUIRED);
	else if (!strcmp(argv[i], "-e"))
	{
	i ++;
	if (i >= argc \|\| num_events >= 100)
	usage();

	events[num_events] = argv[i];
	num_events ++;
	}
	else if (!strcmp(argv[i], "-h"))
	{
	i ++;
	if (i >= argc)
	usage();

	cupsSetServer(argv[i]);
	}
	else if (uri \|\| strncmp(argv[i], "ipp://", 6))
	usage();
	else
	uri = argv[i];

	if (!uri)
	usage();

	if (num_events == 0)
	{
	events[0] = "all";
	num_events = 1;
	}

	/*
	* Connect to the server...
	*/

	if ((http = httpConnectEncrypt(cupsServer(), ippPort(),
	cupsEncryption())) == NULL)
	{
	perror(cupsServer());
	return (1);
	}

	/*
	* Catch CTRL-C and SIGTERM...
	*/

	#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
	sigset(SIGINT, sigterm_handler);
	sigset(SIGTERM, sigterm_handler);
	#elif defined(HAVE_SIGACTION)
	memset(&action, 0, sizeof(action));

	sigemptyset(&action.sa_mask);
	action.sa_handler = sigterm_handler;
	sigaction(SIGINT, &action, NULL);
	sigaction(SIGTERM, &action, NULL);
	#else
	signal(SIGINT, sigterm_handler);
	signal(SIGTERM, sigterm_handler);
	#endif /* HAVE_SIGSET */

	/*
	* Create the subscription...
	*/

	if (strstr(uri, "/jobs/"))
	{
	request = ippNewRequest(IPP_CREATE_JOB_SUBSCRIPTION);
	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
	}
	else
	{
	request = ippNewRequest(IPP_CREATE_PRINTER_SUBSCRIPTION);
	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
	uri);
	}

	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
	NULL, cupsUser());

	ippAddStrings(request, IPP_TAG_SUBSCRIPTION, IPP_TAG_KEYWORD, "notify-events",
	num_events, NULL, events);
	ippAddString(request, IPP_TAG_SUBSCRIPTION, IPP_TAG_KEYWORD,
	"notify-pull-method", NULL, "ippget");

	response = cupsDoRequest(http, request, uri);
	if (cupsLastError() >= IPP_BAD_REQUEST)
	{
	fprintf(stderr, "Create-%s-Subscription: %s\n",
	strstr(uri, "/jobs") ? "Job" : "Printer", cupsLastErrorString());
	ippDelete(response);
	httpClose(http);
	return (1);
	}

	if ((attr = ippFindAttribute(response, "notify-subscription-id",
	IPP_TAG_INTEGER)) == NULL)
	{
	fputs("ERROR: No notify-subscription-id in response!\n", stderr);
	ippDelete(response);
	httpClose(http);
	return (1);
	}

	subscription_id = attr->values[0].integer;

	printf("Create-%s-Subscription: notify-subscription-id=%d\n",
	strstr(uri, "/jobs/") ? "Job" : "Printer", subscription_id);

	ippDelete(response);

	/*
	* Monitor for events...
	*/

	sequence_number = 0;

	while (!terminate)
	{
	/*
	* Get the current events...
	*/

	printf("\nGet-Notifications(%d,%d):", subscription_id, sequence_number);
	fflush(stdout);

	request = ippNewRequest(IPP_GET_NOTIFICATIONS);

	if (strstr(uri, "/jobs/"))
	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
	else
	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
	uri);

	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
	"requesting-user-name", NULL, cupsUser());

	ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
	"notify-subscription-ids", subscription_id);
	if (sequence_number)
	ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
	"notify-sequence-numbers", sequence_number + 1);

	response = cupsDoRequest(http, request, uri);

	printf(" %s\n", ippErrorString(cupsLastError()));

	if (cupsLastError() >= IPP_BAD_REQUEST)
	fprintf(stderr, "Get-Notifications: %s\n", cupsLastErrorString());
	else if (response)
	{
	print_attributes(response, 0);

	for (attr = ippFindAttribute(response, "notify-sequence-number",
	IPP_TAG_INTEGER);
	attr;
	attr = ippFindNextAttribute(response, "notify-sequence-number",
	IPP_TAG_INTEGER))
	if (attr->values[0].integer > sequence_number)
	sequence_number = attr->values[0].integer;
	}

	if ((attr = ippFindAttribute(response, "notify-get-interval",
	IPP_TAG_INTEGER)) != NULL &&
	attr->values[0].integer > 0)
	interval = attr->values[0].integer;
	else
	interval = 5;

	ippDelete(response);
	sleep((unsigned)interval);
	}

	/*
	* Cancel the subscription...
	*/

	printf("\nCancel-Subscription:");
	fflush(stdout);

	request = ippNewRequest(IPP_CANCEL_SUBSCRIPTION);

	if (strstr(uri, "/jobs/"))
	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
	else
	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
	uri);

	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
	NULL, cupsUser());

	ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
	"notify-subscription-id", subscription_id);

	ippDelete(cupsDoRequest(http, request, uri));

	printf(" %s\n", ippErrorString(cupsLastError()));

	if (cupsLastError() >= IPP_BAD_REQUEST)
	fprintf(stderr, "Cancel-Subscription: %s\n", cupsLastErrorString());

	/*
	* Close the connection and return...
	*/

	httpClose(http);

	return (0);
	}


	/*
	* 'print_attributes()' - Print the attributes in a request...
	*/

	static void
	print_attributes(ipp_t ipp, / I - IPP request */
	int indent) /* I - Indentation */
	{
	int i; /* Looping var */
	ipp_tag_t group; /* Current group */
	ipp_attribute_t attr; / Current attribute */
	_ipp_value_t val; / Current value */
	static const char * const tags[] = /* Value/group tag strings */
	{
	"reserved-00",
	"operation-attributes-tag",
	"job-attributes-tag",
	"end-of-attributes-tag",
	"printer-attributes-tag",
	"unsupported-attributes-tag",
	"subscription-attributes-tag",
	"event-attributes-tag",
	"reserved-08",
	"reserved-09",
	"reserved-0A",
	"reserved-0B",
	"reserved-0C",
	"reserved-0D",
	"reserved-0E",
	"reserved-0F",
	"unsupported",
	"default",
	"unknown",
	"no-value",
	"reserved-14",
	"not-settable",
	"delete-attr",
	"admin-define",
	"reserved-18",
	"reserved-19",
	"reserved-1A",
	"reserved-1B",
	"reserved-1C",
	"reserved-1D",
	"reserved-1E",
	"reserved-1F",
	"reserved-20",
	"integer",
	"boolean",
	"enum",
	"reserved-24",
	"reserved-25",
	"reserved-26",
	"reserved-27",
	"reserved-28",
	"reserved-29",
	"reserved-2a",
	"reserved-2b",
	"reserved-2c",
	"reserved-2d",
	"reserved-2e",
	"reserved-2f",
	"octetString",
	"dateTime",
	"resolution",
	"rangeOfInteger",
	"begCollection",
	"textWithLanguage",
	"nameWithLanguage",
	"endCollection",
	"reserved-38",
	"reserved-39",
	"reserved-3a",
	"reserved-3b",
	"reserved-3c",
	"reserved-3d",
	"reserved-3e",
	"reserved-3f",
	"reserved-40",
	"textWithoutLanguage",
	"nameWithoutLanguage",
	"reserved-43",
	"keyword",
	"uri",
	"uriScheme",
	"charset",
	"naturalLanguage",
	"mimeMediaType",
	"memberName"
	};


	for (group = IPP_TAG_ZERO, attr = ipp->attrs; attr; attr = attr->next)
	{
	if ((attr->group_tag == IPP_TAG_ZERO && indent <= 8) \|\| !attr->name)
	{
	group = IPP_TAG_ZERO;
	putchar('\n');
	continue;
	}

	if (group != attr->group_tag)
	{
	group = attr->group_tag;

	putchar('\n');
	for (i = 4; i < indent; i ++)
	putchar(' ');

	printf("%s:\n\n", tags[group]);
	}

	for (i = 0; i < indent; i ++)
	putchar(' ');

	printf("%s (", attr->name);
	if (attr->num_values > 1)
	printf("1setOf ");
	printf("%s):", tags[attr->value_tag]);

	switch (attr->value_tag)
	{
	case IPP_TAG_ENUM :
	case IPP_TAG_INTEGER :
	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	printf(" %d", val->integer);
	putchar('\n');
	break;

	case IPP_TAG_BOOLEAN :
	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	printf(" %s", val->boolean ? "true" : "false");
	putchar('\n');
	break;

	case IPP_TAG_RANGE :
	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	printf(" %d-%d", val->range.lower, val->range.upper);
	putchar('\n');
	break;

	case IPP_TAG_DATE :
	{
	char vstring[256]; /* Formatted time */

	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	printf(" (%s)", _cupsStrDate(vstring, sizeof(vstring), ippDateToTime(val->date)));
	}
	putchar('\n');
	break;

	case IPP_TAG_RESOLUTION :
	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	printf(" %dx%d%s", val->resolution.xres, val->resolution.yres,
	val->resolution.units == IPP_RES_PER_INCH ? "dpi" : "dpcm");
	putchar('\n');
	break;

	case IPP_TAG_STRING :
	case IPP_TAG_TEXTLANG :
	case IPP_TAG_NAMELANG :
	case IPP_TAG_TEXT :
	case IPP_TAG_NAME :
	case IPP_TAG_KEYWORD :
	case IPP_TAG_URI :
	case IPP_TAG_URISCHEME :
	case IPP_TAG_CHARSET :
	case IPP_TAG_LANGUAGE :
	case IPP_TAG_MIMETYPE :
	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	printf(" \"%s\"", val->string.text);
	putchar('\n');
	break;

	case IPP_TAG_BEGIN_COLLECTION :
	putchar('\n');

	for (i = 0, val = attr->values; i < attr->num_values; i ++, val ++)
	{
	if (i)
	putchar('\n');
	print_attributes(val->collection, indent + 4);
	}
	break;

	default :
	printf("UNKNOWN (%d values)\n", attr->num_values);
	break;
	}
	}
	}


	/*
	* 'sigterm_handler()' - Flag when the user hits CTRL-C...
	*/

	static void
	sigterm_handler(int sig) /* I - Signal number (unused) */
	{
	(void)sig;

	terminate = 1;
	}


	/*
	* 'usage()' - Show program usage...
	*/

	static void
	usage(void)
	{
	puts("Usage: testsub [-E] [-e event ... -e eventN] [-h hostname] URI");
	exit(0);
	}