[thirdparty/cups.git] / backend / socket.c

/*
 * "$Id: socket.c 7881 2008-08-28 20:21:56Z mike $"
 *
 *   AppSocket 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.
 *   wait_bc() - Wait for back-channel data...
 */

/*
 * Include necessary headers.
 */

#include <cups/http-private.h>
#include "backend-private.h"
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>

#ifdef WIN32
#  include <winsock.h>
#else
#  include <unistd.h>
#  include <fcntl.h>
#  include <sys/socket.h>
#  include <netinet/in.h>
#  include <arpa/inet.h>
#  include <netdb.h>
#endif /* WIN32 */


/*
 * Local functions...
 */

static int	wait_bc(int device_fd, int secs);


/*
 * '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 arguments (6 or 7) */
     char *argv[])			/* I - Command-line arguments */
{
  const char	*device_uri;		/* Device URI */
  char		scheme[255],		/* Scheme in URI */
		hostname[1024],		/* Hostname */
		username[255],		/* Username info (not used) */
		resource[1024],		/* Resource info (not used) */
		*options,		/* Pointer to options */
		*name,			/* Name of option */
		*value,			/* Value of option */
		sep;			/* Option separator */
  int		print_fd;		/* Print file */
  int		copies;			/* Number of copies to print */
  time_t	start_time;		/* Time of first connect */
#ifdef __APPLE__
  time_t	current_time,		/* Current time */
		wait_time;		/* Time to wait before shutting down socket */
#endif /* __APPLE__ */
  int		contimeout;		/* Connection timeout */
  int		waiteof;		/* Wait for end-of-file? */
  int		port;			/* Port number */
  char		portname[255];		/* Port name */
  int		delay;			/* Delay for retries... */
  int		device_fd;		/* AppSocket */
  int		error;			/* Error code (if any) */
  http_addrlist_t *addrlist,		/* Address list */
		*addr;			/* Connected address */
  char		addrname[256];		/* Address name */
  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? */
  ssize_t	tbytes;			/* Total number of bytes written */
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
  struct sigaction action;		/* Actions for POSIX signals */
#endif /* HAVE_SIGACTION && !HAVE_SIGSET */


 /*
  * Make sure status messages are not buffered...
  */

  setbuf(stderr, NULL);

 /*
  * Ignore SIGPIPE signals...
  */

#ifdef HAVE_SIGSET
  sigset(SIGPIPE, SIG_IGN);
#elif defined(HAVE_SIGACTION)
  memset(&action, 0, sizeof(action));
  action.sa_handler = SIG_IGN;
  sigaction(SIGPIPE, &action, NULL);
#else
  signal(SIGPIPE, SIG_IGN);
#endif /* HAVE_SIGSET */

 /*
  * Check command-line...
  */

  if (argc == 1)
  {
    printf("network socket \"Unknown\" \"%s\"\n",
           _cupsLangString(cupsLangDefault(), _("AppSocket/HP JetDirect")));
    return (CUPS_BACKEND_OK);
  }
  else if (argc < 6 || argc > 7)
  {
    _cupsLangPrintf(stderr,
                    _("Usage: %s job-id user title copies options [file]\n"),
                    argv[0]);
    return (CUPS_BACKEND_FAILED);
  }

 /*
  * If we have 7 arguments, print the file named on the command-line.
  * Otherwise, send stdin instead...
  */

  if (argc == 6)
  {
    print_fd = 0;
    copies   = 1;
  }
  else
  {
   /*
    * Try to open the print file...
    */

    if ((print_fd = open(argv[6], O_RDONLY)) < 0)
    {
      _cupsLangPrintf(stderr,
                      _("ERROR: Unable to open print file \"%s\": %s\n"),
                      argv[6], strerror(errno));
      return (CUPS_BACKEND_FAILED);
    }

    copies = atoi(argv[4]);
  }

 /*
  * Extract the hostname and port number 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 == 0)
    port = 9100;	/* Default to HP JetDirect/Tektronix PhaserShare */

 /*
  * Get options, if any...
  */

  waiteof    = 1;
  contimeout = 7 * 24 * 60 * 60;

  if ((options = strchr(resource, '?')) != NULL)
  {
   /*
    * Yup, terminate the device name string and move to the first
    * character of the options...
    */

    *options++ = '\0';

   /*
    * Parse options...
    */

    while (*options)
    {
     /*
      * Get the name...
      */

      name = options;

      while (*options && *options != '=' && *options != '+' && *options != '&')
        options ++;

      if ((sep = *options) != '\0')
        *options++ = '\0';

      if (sep == '=')
      {
       /*
        * Get the value...
	*/

        value = options;

	while (*options && *options != '+' && *options != '&')
	  options ++;

        if (*options)
	  *options++ = '\0';
      }
      else
        value = (char *)"";

     /*
      * Process the option...
      */

      if (!strcasecmp(name, "waiteof"))
      {
       /*
        * Set the wait-for-eof value...
	*/

        waiteof = !value[0] || !strcasecmp(value, "on") ||
		  !strcasecmp(value, "yes") || !strcasecmp(value, "true");
      }
      else if (!strcasecmp(name, "contimeout"))
      {
       /*
        * Set the connection timeout...
	*/

	if (atoi(value) > 0)
	  contimeout = atoi(value);
      }
    }
  }

 /*
  * Then try to connect to the remote host...
  */

  start_time = time(NULL);

  sprintf(portname, "%d", port);

  fputs("STATE: +connecting-to-device\n", stderr);
  fprintf(stderr, "DEBUG: Looking up \"%s\"...\n", hostname);

  if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL)
  {
    _cupsLangPrintf(stderr, _("ERROR: Unable to locate printer \'%s\'\n"),
                    hostname);
    return (CUPS_BACKEND_STOP);
  }

  fprintf(stderr, "DEBUG: Connecting to %s:%d\n", hostname, port);
  _cupsLangPuts(stderr, _("INFO: Connecting to printer...\n"));

  for (delay = 5;;)
  {
    if ((addr = httpAddrConnect(addrlist, &device_fd)) == NULL)
    {
      error     = errno;
      device_fd = -1;

      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"));

       /*
        * Sleep 5 seconds to keep the job from requeuing too rapidly...
	*/

	sleep(5);

        return (CUPS_BACKEND_FAILED);
      }

      if (error == ECONNREFUSED || error == EHOSTDOWN ||
          error == EHOSTUNREACH)
      {
        if (contimeout && (time(NULL) - start_time) > contimeout)
	{
	  _cupsLangPuts(stderr, _("ERROR: Printer not responding\n"));
	  return (CUPS_BACKEND_FAILED);
	}

	_cupsLangPrintf(stderr,
			_("WARNING: Network host \'%s\' is busy; will retry in "
			  "%d seconds...\n"), hostname, delay);

	sleep(delay);

	if (delay < 30)
	  delay += 5;
      }
      else
      {
        _cupsLangPrintf(stderr, "DEBUG: Connection error: %s\n",
	                strerror(errno));
	_cupsLangPuts(stderr,
	              _("ERROR: Unable to connect to printer; will retry in 30 "
		        "seconds...\n"));
	sleep(30);
      }
    }
    else
      break;
  }

  fputs("STATE: -connecting-to-device\n", stderr);
  _cupsLangPuts(stderr, _("INFO: Connected to printer...\n"));

#ifdef AF_INET6
  if (addr->addr.addr.sa_family == AF_INET6)
    fprintf(stderr, "DEBUG: Connected to [%s]:%d (IPv6)...\n", 
	    httpAddrString(&addr->addr, addrname, sizeof(addrname)),
	    ntohs(addr->addr.ipv6.sin6_port));
  else
#endif /* AF_INET6 */
    if (addr->addr.addr.sa_family == AF_INET)
      fprintf(stderr, "DEBUG: Connected to %s:%d (IPv4)...\n",
	      httpAddrString(&addr->addr, addrname, sizeof(addrname)),
	      ntohs(addr->addr.ipv4.sin_port));

 /*
  * See if the printer supports SNMP...
  */

  if ((snmp_fd = _cupsSNMPOpen(addr->addr.addr.sa_family)) >= 0)
  {
    have_supplies = !backendSNMPSupplies(snmp_fd, &(addr->addr), &start_count,
                                         NULL);
  }
  else
    have_supplies = start_count = 0;

 /*
  * Print everything...
  */

  tbytes = 0;

  while (copies > 0 && tbytes >= 0)
  {
    copies --;

    if (print_fd != 0)
    {
      fputs("PAGE: 1 1\n", stderr);
      lseek(print_fd, 0, SEEK_SET);
    }

    tbytes = backendRunLoop(print_fd, device_fd, snmp_fd, &(addr->addr), 1, 0, 
                            backendNetworkSideCB);

    if (print_fd != 0 && tbytes >= 0)
      _cupsLangPrintf(stderr,
#ifdef HAVE_LONG_LONG
		      _("INFO: Sent print file, %lld bytes...\n"),
#else
		      _("INFO: Sent print file, %ld bytes...\n"),
#endif /* HAVE_LONG_LONG */
		      CUPS_LLCAST tbytes);
  }

#ifdef __APPLE__
 /*
  * Wait up to 5 seconds to get any pending back-channel data...
  */

  wait_time = time(NULL) + 5;
  while (wait_time >= time(&current_time))
    if (wait_bc(device_fd, wait_time - current_time) <= 0)
      break;
#endif /* __APPLE__ */

  if (waiteof)
  {
   /*
    * Shutdown the socket and wait for the other end to finish...
    */

    _cupsLangPuts(stderr,
                  _("INFO: Print file sent, waiting for printer to finish...\n"));

    shutdown(device_fd, 1);

    while (wait_bc(device_fd, 90) > 0);
  }

 /*
  * Collect the final page count as needed...
  */

  if (have_supplies && 
      !backendSNMPSupplies(snmp_fd, &(addr->addr), &page_count, NULL) &&
      page_count > start_count)
    fprintf(stderr, "PAGE: total %d\n", page_count - start_count);

 /*
  * Close the socket connection...
  */

  close(device_fd);

  httpAddrFreeList(addrlist);

 /*
  * Close the input file and return...
  */

  if (print_fd != 0)
    close(print_fd);

  if (tbytes >= 0)
    _cupsLangPuts(stderr, _("INFO: Ready to print.\n"));

  return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
}


/*
 * 'wait_bc()' - Wait for back-channel data...
 */

static int				/* O - # bytes read or -1 on error */
wait_bc(int device_fd,			/* I - Socket */
        int secs)			/* I - Seconds to wait */
{
  struct timeval timeout;		/* Timeout for select() */
  fd_set	input;			/* Input set for select() */
  ssize_t	bytes;			/* Number of back-channel bytes read */
  char		buffer[1024];		/* Back-channel buffer */


 /*
  * Wait up to "secs" seconds for backchannel data...
  */

  timeout.tv_sec  = secs;
  timeout.tv_usec = 0;

  FD_ZERO(&input);
  FD_SET(device_fd, &input);

  if (select(device_fd + 1, &input, NULL, NULL, &timeout) > 0)
  {
   /*
    * Grab the data coming back and spit it out to stderr...
    */

    if ((bytes = read(device_fd, buffer, sizeof(buffer))) > 0)
    {
      fprintf(stderr, "DEBUG: Received %d bytes of back-channel data\n",
	      (int)bytes);
      cupsBackChannelWrite(buffer, bytes, 1.0);
    }

    return (bytes);
  }
  else
    return (-1);
}


/*
 * End of "$Id: socket.c 7881 2008-08-28 20:21:56Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
b19ccc9e	2	* "$Id: socket.c 7881 2008-08-28 20:21:56Z mike $"
ef416fc2	3	*
	4	* AppSocket backend for the Common UNIX Printing System (CUPS).
	5	*
f8b3a85b	6	* Copyright 2007-2010 by Apple Inc.
f7deaa1a	7	* Copyright 1997-2007 by Easy Software Products, all rights reserved.
ef416fc2	8	*
ef416fc2	9	* These coded instructions, statements, and computer programs are the
bc44d920	10	* property of Apple Inc. and are protected by Federal copyright
bc44d920	11	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
ef416fc2	12	* "LICENSE" which should have been included with this file. If this
bc44d920	13	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	14	*
	15	* This file is subject to the Apple OS-Developed Software exception.
	16	*
	17	* Contents:
	18	*
f7deaa1a	19	* main() - Send a file to the printer or server.
323c5de1	20	* wait_bc() - Wait for back-channel data...
ef416fc2	21	*/
	22
	23	/*
	24	* Include necessary headers.
	25	*/
	26
ef416fc2	27	#include <cups/http-private.h>
ed486911	28	#include "backend-private.h"
ef416fc2	29	#include <stdarg.h>
ef416fc2	30	#include <sys/types.h>
ef416fc2	31	#include <sys/stat.h>
ef416fc2	32
	33	#ifdef WIN32
	34	# include <winsock.h>
	35	#else
	36	# include <unistd.h>
	37	# include <fcntl.h>
	38	# include <sys/socket.h>
	39	# include <netinet/in.h>
	40	# include <arpa/inet.h>
	41	# include <netdb.h>
	42	#endif /* WIN32 */
	43
	44
f7deaa1a	45	/*
	46	* Local functions...
	47	*/
	48
323c5de1	49	static int wait_bc(int device_fd, int secs);
f7deaa1a	50
f7deaa1a	51
ef416fc2	52	/*
	53	* 'main()' - Send a file to the printer or server.
	54	*
	55	* Usage:
	56	*
	57	* printer-uri job-id user title copies options [file]
	58	*/
	59
	60	int /* O - Exit status */
	61	main(int argc, /* I - Number of command-line arguments (6 or 7) */
	62	char argv[]) / I - Command-line arguments */
	63	{
1f0275e3	64	const char device_uri; / Device URI */
acb056cb	65	char scheme[255], /* Scheme in URI */
ef416fc2	66	hostname[1024], /* Hostname */
ef416fc2	67	username[255], /* Username info (not used) */
fa73b229	68	resource[1024], /* Resource info (not used) */
fa73b229	69	options, / Pointer to options */
db1f069b MS	70	name, / Name of option */
	71	value, / Value of option */
	72	sep; /* Option separator */
ed486911	73	int print_fd; /* Print file */
ef416fc2	74	int copies; /* Number of copies to print */
f8b3a85b MS	75	time_t start_time; /* Time of first connect */
	76	#ifdef __APPLE__
	77	time_t current_time, /* Current time */
5f64df29	78	wait_time; /* Time to wait before shutting down socket */
f8b3a85b	79	#endif /* __APPLE__ */
c0e1af83	80	int contimeout; /* Connection timeout */
fa73b229	81	int waiteof; /* Wait for end-of-file? */
ef416fc2	82	int port; /* Port number */
	83	char portname[255]; /* Port name */
	84	int delay; /* Delay for retries... */
ed486911	85	int device_fd; /* AppSocket */
ef416fc2	86	int error; /* Error code (if any) */
26d47ec6	87	http_addrlist_t addrlist, / Address list */
db1f069b	88	addr; / Connected address */
26d47ec6	89	char addrname[256]; /* Address name */
568fa3fa MS	90	int snmp_fd, /* SNMP socket */
568fa3fa MS	91	start_count, /* Page count via SNMP at start */
426c6a59 MS	92	page_count, /* Page count via SNMP */
426c6a59 MS	93	have_supplies; /* Printer supports supply levels? */
ed486911	94	ssize_t tbytes; /* Total number of bytes written */
ef416fc2	95	#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
	96	struct sigaction action; /* Actions for POSIX signals */
	97	#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
	98
	99
	100	/*
	101	* Make sure status messages are not buffered...
	102	*/
	103
	104	setbuf(stderr, NULL);
	105
	106	/*
	107	* Ignore SIGPIPE signals...
	108	*/
	109
	110	#ifdef HAVE_SIGSET
	111	sigset(SIGPIPE, SIG_IGN);
	112	#elif defined(HAVE_SIGACTION)
	113	memset(&action, 0, sizeof(action));
	114	action.sa_handler = SIG_IGN;
	115	sigaction(SIGPIPE, &action, NULL);
	116	#else
	117	signal(SIGPIPE, SIG_IGN);
	118	#endif /* HAVE_SIGSET */
	119
	120	/*
	121	* Check command-line...
	122	*/
	123
	124	if (argc == 1)
	125	{
8b450588 MS	126	printf("network socket \"Unknown\" \"%s\"\n",
8b450588 MS	127	_cupsLangString(cupsLangDefault(), _("AppSocket/HP JetDirect")));
ef416fc2	128	return (CUPS_BACKEND_OK);
	129	}
	130	else if (argc < 6 \|\| argc > 7)
	131	{
db1f069b MS	132	_cupsLangPrintf(stderr,
	133	_("Usage: %s job-id user title copies options [file]\n"),
	134	argv[0]);
ef416fc2	135	return (CUPS_BACKEND_FAILED);
	136	}
	137
	138	/*
	139	* If we have 7 arguments, print the file named on the command-line.
	140	* Otherwise, send stdin instead...
	141	*/
	142
	143	if (argc == 6)
	144	{
ed486911	145	print_fd = 0;
ed486911	146	copies = 1;
ef416fc2	147	}
	148	else
	149	{
	150	/*
	151	* Try to open the print file...
	152	*/
	153
ed486911	154	if ((print_fd = open(argv[6], O_RDONLY)) < 0)
ef416fc2	155	{
080811b1 MS	156	_cupsLangPrintf(stderr,
	157	_("ERROR: Unable to open print file \"%s\": %s\n"),
	158	argv[6], strerror(errno));
ef416fc2	159	return (CUPS_BACKEND_FAILED);
	160	}
	161
	162	copies = atoi(argv[4]);
	163	}
	164
	165	/*
	166	* Extract the hostname and port number from the URI...
	167	*/
	168
1f0275e3 MS	169	if ((device_uri = cupsBackendDeviceURI(argv)) == NULL)
	170	return (CUPS_BACKEND_FAILED);
	171
acb056cb MS	172	httpSeparateURI(HTTP_URI_CODING_ALL, device_uri, scheme, sizeof(scheme),
acb056cb MS	173	username, sizeof(username), hostname, sizeof(hostname), &port,
ef416fc2	174	resource, sizeof(resource));
	175
	176	if (port == 0)
	177	port = 9100; /* Default to HP JetDirect/Tektronix PhaserShare */
	178
fa73b229	179	/*
	180	* Get options, if any...
	181	*/
	182
c0e1af83	183	waiteof = 1;
c0e1af83	184	contimeout = 7 * 24 * 60 * 60;
fa73b229	185
	186	if ((options = strchr(resource, '?')) != NULL)
	187	{
	188	/*
	189	* Yup, terminate the device name string and move to the first
	190	* character of the options...
	191	*/
	192
	193	*options++ = '\0';
	194
	195	/*
	196	* Parse options...
	197	*/
	198
	199	while (*options)
	200	{
	201	/*
	202	* Get the name...
	203	*/
	204
db1f069b	205	name = options;
fa73b229	206
db1f069b MS	207	while (options && options != '=' && options != '+' && options != '&')
	208	options ++;
	209
	210	if ((sep = *options) != '\0')
	211	*options++ = '\0';
	212
	213	if (sep == '=')
fa73b229	214	{
	215	/*
	216	* Get the value...
	217	*/
	218
db1f069b	219	value = options;
fa73b229	220
db1f069b	221	while (options && options != '+' && *options != '&')
fa73b229	222	options ++;
db1f069b MS	223
	224	if (*options)
	225	*options++ = '\0';
fa73b229	226	}
fa73b229	227	else
db1f069b	228	value = (char *)"";
fa73b229	229
	230	/*
	231	* Process the option...
	232	*/
	233
	234	if (!strcasecmp(name, "waiteof"))
	235	{
	236	/*
	237	* Set the wait-for-eof value...
	238	*/
	239
	240	waiteof = !value[0] \|\| !strcasecmp(value, "on") \|\|
	241	!strcasecmp(value, "yes") \|\| !strcasecmp(value, "true");
	242	}
c0e1af83	243	else if (!strcasecmp(name, "contimeout"))
	244	{
	245	/*
	246	* Set the connection timeout...
	247	*/
	248
	249	if (atoi(value) > 0)
	250	contimeout = atoi(value);
	251	}
fa73b229	252	}
	253	}
	254
ef416fc2	255	/*
	256	* Then try to connect to the remote host...
	257	*/
	258
4d301e69	259	start_time = time(NULL);
c0e1af83	260
ef416fc2	261	sprintf(portname, "%d", port);
ef416fc2	262
acb056cb	263	fputs("STATE: +connecting-to-device\n", stderr);
1340db2d MS	264	fprintf(stderr, "DEBUG: Looking up \"%s\"...\n", hostname);
1340db2d MS	265
ef416fc2	266	if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL)
ef416fc2	267	{
4d301e69	268	_cupsLangPrintf(stderr, _("ERROR: Unable to locate printer \'%s\'\n"),
db1f069b	269	hostname);
ef416fc2	270	return (CUPS_BACKEND_STOP);
	271	}
	272
acb056cb	273	fprintf(stderr, "DEBUG: Connecting to %s:%d\n", hostname, port);
8b450588	274	_cupsLangPuts(stderr, _("INFO: Connecting to printer...\n"));
ef416fc2	275
ed486911	276	for (delay = 5;;)
ef416fc2	277	{
26d47ec6	278	if ((addr = httpAddrConnect(addrlist, &device_fd)) == NULL)
ef416fc2	279	{
ed486911	280	error = errno;
ed486911	281	device_fd = -1;
ef416fc2	282
ed486911	283	if (getenv("CLASS") != NULL)
	284	{
	285	/*
	286	* If the CLASS environment variable is set, the job was submitted
	287	* to a class and not to a specific queue. In this case, we want
	288	* to abort immediately so that the job can be requeued on the next
	289	* available printer in the class.
	290	*/
ef416fc2	291
db1f069b MS	292	_cupsLangPuts(stderr,
	293	_("INFO: Unable to contact printer, queuing on next "
	294	"printer in class...\n"));
ef416fc2	295
ed486911	296	/*
	297	* Sleep 5 seconds to keep the job from requeuing too rapidly...
	298	*/
ef416fc2	299
ed486911	300	sleep(5);
ef416fc2	301
ed486911	302	return (CUPS_BACKEND_FAILED);
ed486911	303	}
ef416fc2	304
ed486911	305	if (error == ECONNREFUSED \|\| error == EHOSTDOWN \|\|
	306	error == EHOSTUNREACH)
	307	{
c0e1af83	308	if (contimeout && (time(NULL) - start_time) > contimeout)
c0e1af83	309	{
4d301e69	310	_cupsLangPuts(stderr, _("ERROR: Printer not responding\n"));
c0e1af83	311	return (CUPS_BACKEND_FAILED);
	312	}
	313
db1f069b	314	_cupsLangPrintf(stderr,
4d301e69 MS	315	_("WARNING: Network host \'%s\' is busy; will retry in "
4d301e69 MS	316	"%d seconds...\n"), hostname, delay);
c0e1af83	317
ed486911	318	sleep(delay);
ef416fc2	319
ed486911	320	if (delay < 30)
ed486911	321	delay += 5;
ef416fc2	322	}
ef416fc2	323	else
ed486911	324	{
db1f069b MS	325	_cupsLangPrintf(stderr, "DEBUG: Connection error: %s\n",
	326	strerror(errno));
	327	_cupsLangPuts(stderr,
4d301e69 MS	328	_("ERROR: Unable to connect to printer; will retry in 30 "
4d301e69 MS	329	"seconds...\n"));
ed486911	330	sleep(30);
ed486911	331	}
ef416fc2	332	}
ed486911	333	else
	334	break;
	335	}
ef416fc2	336
ed486911	337	fputs("STATE: -connecting-to-device\n", stderr);
8b450588	338	_cupsLangPuts(stderr, _("INFO: Connected to printer...\n"));
26d47ec6	339
	340	#ifdef AF_INET6
	341	if (addr->addr.addr.sa_family == AF_INET6)
	342	fprintf(stderr, "DEBUG: Connected to [%s]:%d (IPv6)...\n",
c0e1af83	343	httpAddrString(&addr->addr, addrname, sizeof(addrname)),
c0e1af83	344	ntohs(addr->addr.ipv6.sin6_port));
26d47ec6	345	else
	346	#endif /* AF_INET6 */
	347	if (addr->addr.addr.sa_family == AF_INET)
	348	fprintf(stderr, "DEBUG: Connected to %s:%d (IPv4)...\n",
c0e1af83	349	httpAddrString(&addr->addr, addrname, sizeof(addrname)),
c0e1af83	350	ntohs(addr->addr.ipv4.sin_port));
ef416fc2	351
568fa3fa MS	352	/*
	353	* See if the printer supports SNMP...
	354	*/
	355
7a14d768	356	if ((snmp_fd = _cupsSNMPOpen(addr->addr.addr.sa_family)) >= 0)
1f0275e3	357	{
426c6a59 MS	358	have_supplies = !backendSNMPSupplies(snmp_fd, &(addr->addr), &start_count,
426c6a59 MS	359	NULL);
1f0275e3 MS	360	}
1f0275e3 MS	361	else
426c6a59	362	have_supplies = start_count = 0;
568fa3fa	363
ed486911	364	/*
	365	* Print everything...
	366	*/
ef416fc2	367
ed486911	368	tbytes = 0;
ef416fc2	369
ed486911	370	while (copies > 0 && tbytes >= 0)
ed486911	371	{
ef416fc2	372	copies --;
ef416fc2	373
ed486911	374	if (print_fd != 0)
ef416fc2	375	{
ef416fc2	376	fputs("PAGE: 1 1\n", stderr);
ed486911	377	lseek(print_fd, 0, SEEK_SET);
ef416fc2	378	}
ef416fc2	379
ef55b745	380	tbytes = backendRunLoop(print_fd, device_fd, snmp_fd, &(addr->addr), 1, 0,
568fa3fa	381	backendNetworkSideCB);
ef416fc2	382
ed486911	383	if (print_fd != 0 && tbytes >= 0)
db1f069b	384	_cupsLangPrintf(stderr,
c0e1af83	385	#ifdef HAVE_LONG_LONG
db1f069b	386	_("INFO: Sent print file, %lld bytes...\n"),
c0e1af83	387	#else
db1f069b	388	_("INFO: Sent print file, %ld bytes...\n"),
c0e1af83	389	#endif /* HAVE_LONG_LONG */
db1f069b	390	CUPS_LLCAST tbytes);
ed486911	391	}
ef416fc2	392
f8b3a85b	393	#ifdef __APPLE__
323c5de1	394	/*
5f64df29	395	* Wait up to 5 seconds to get any pending back-channel data...
323c5de1	396	*/
323c5de1	397
5f64df29	398	wait_time = time(NULL) + 5;
9a4f8274 MS	399	while (wait_time >= time(&current_time))
9a4f8274 MS	400	if (wait_bc(device_fd, wait_time - current_time) <= 0)
5f64df29	401	break;
f8b3a85b	402	#endif /* __APPLE__ */
323c5de1	403
ed486911	404	if (waiteof)
	405	{
	406	/*
	407	* Shutdown the socket and wait for the other end to finish...
	408	*/
ef416fc2	409
db1f069b MS	410	_cupsLangPuts(stderr,
db1f069b MS	411	_("INFO: Print file sent, waiting for printer to finish...\n"));
ef416fc2	412
ed486911	413	shutdown(device_fd, 1);
ef416fc2	414
323c5de1	415	while (wait_bc(device_fd, 90) > 0);
ed486911	416	}
ef416fc2	417
568fa3fa MS	418	/*
	419	* Collect the final page count as needed...
	420	*/
	421
426c6a59	422	if (have_supplies &&
568fa3fa MS	423	!backendSNMPSupplies(snmp_fd, &(addr->addr), &page_count, NULL) &&
	424	page_count > start_count)
	425	fprintf(stderr, "PAGE: total %d\n", page_count - start_count);
	426
ed486911	427	/*
	428	* Close the socket connection...
	429	*/
ef416fc2	430
ed486911	431	close(device_fd);
ef416fc2	432
	433	httpAddrFreeList(addrlist);
	434
	435	/*
	436	* Close the input file and return...
	437	*/
	438
ed486911	439	if (print_fd != 0)
ed486911	440	close(print_fd);
ef416fc2	441
ed486911	442	if (tbytes >= 0)
db1f069b	443	_cupsLangPuts(stderr, _("INFO: Ready to print.\n"));
ef416fc2	444
ed486911	445	return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
ef416fc2	446	}
	447
	448
f7deaa1a	449	/*
323c5de1	450	* 'wait_bc()' - Wait for back-channel data...
	451	*/
	452
	453	static int /* O - # bytes read or -1 on error */
	454	wait_bc(int device_fd, /* I - Socket */
	455	int secs) /* I - Seconds to wait */
	456	{
	457	struct timeval timeout; /* Timeout for select() */
	458	fd_set input; /* Input set for select() */
	459	ssize_t bytes; /* Number of back-channel bytes read */
	460	char buffer[1024]; /* Back-channel buffer */
	461
	462
	463	/*
	464	* Wait up to "secs" seconds for backchannel data...
	465	*/
	466
	467	timeout.tv_sec = secs;
	468	timeout.tv_usec = 0;
	469
	470	FD_ZERO(&input);
	471	FD_SET(device_fd, &input);
	472
	473	if (select(device_fd + 1, &input, NULL, NULL, &timeout) > 0)
	474	{
	475	/*
	476	* Grab the data coming back and spit it out to stderr...
	477	*/
	478
	479	if ((bytes = read(device_fd, buffer, sizeof(buffer))) > 0)
	480	{
4d301e69	481	fprintf(stderr, "DEBUG: Received %d bytes of back-channel data\n",
323c5de1	482	(int)bytes);
	483	cupsBackChannelWrite(buffer, bytes, 1.0);
	484	}
	485
	486	return (bytes);
	487	}
	488	else
	489	return (-1);
	490	}
	491
	492
	493	/*
b19ccc9e	494	* End of "$Id: socket.c 7881 2008-08-28 20:21:56Z mike $".
ef416fc2	495	*/