/*
 * "lpinfo" command for CUPS.
 *
 * Copyright © 2021-2022 by OpenPrinting.
 * Copyright © 2007-2018 by Apple Inc.
 * Copyright © 1997-2006 by Easy Software Products.
 *
 * Licensed under Apache License v2.0.  See the file "LICENSE" for more
 * information.
 */

/*
 * Include necessary headers...
 */

#include <cups/cups-private.h>
#include <cups/adminutil.h>


/*
 * Local functions...
 */

static void	device_cb(const char *device_class, const char *device_id,
		          const char *device_info,
			  const char *device_make_and_model,
			  const char *device_uri, const char *device_location,
			  void *user_data);
static int	show_devices(int long_status, int timeout,
			     const char *include_schemes,
			     const char *exclude_schemes);
static int	show_models(int long_status,
			    const char *device_id, const char *language,
			    const char *make_model, const char *product,
			    const char *include_schemes,
			    const char *exclude_schemes);
static void	usage(void) _CUPS_NORETURN;


/*
 * 'main()' - Parse options and show status information.
 */

int
main(int  argc,				/* I - Number of command-line arguments */
     char *argv[])			/* I - Command-line arguments */
{
  int		i;			/* Looping var */
  int		long_status;		/* Long listing? */
  const char	*opt,			/* Option pointer */
		*device_id,		/* 1284 device ID */
		*language,		/* Language */
		*make_model,		/* Make and model */
		*product,		/* Product */
		*include_schemes,	/* Schemes to include */
		*exclude_schemes;	/* Schemes to exclude */
  int		timeout;		/* Device timeout */


  _cupsSetLocale(argv);

  long_status     = 0;
  device_id       = NULL;
  language        = NULL;
  make_model      = NULL;
  product         = NULL;
  include_schemes = CUPS_INCLUDE_ALL;
  exclude_schemes = CUPS_EXCLUDE_NONE;
  timeout         = CUPS_TIMEOUT_DEFAULT;

  for (i = 1; i < argc; i ++)
  {
    if (!strcmp(argv[i], "--device-id"))
    {
      i ++;

      if (i < argc)
	device_id = argv[i];
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected 1284 device ID string after \"--device-id\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--device-id=", 12) && argv[i][12])
    {
      device_id = argv[i] + 12;
    }
    else if (!strcmp(argv[i], "--exclude-schemes"))
    {
      i ++;

      if (i < argc)
	exclude_schemes = argv[i];
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected scheme list after \"--exclude-schemes\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--exclude-schemes=", 18) && argv[i][18])
    {
      exclude_schemes = argv[i] + 18;
    }
    else if (!strcmp(argv[i], "--help"))
      usage();
    else if (!strcmp(argv[i], "--include-schemes"))
    {
      i ++;

      if (i < argc)
	include_schemes = argv[i];
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected scheme list after \"--include-schemes\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--include-schemes=", 18) && argv[i][18])
    {
      include_schemes = argv[i] + 18;
    }
    else if (!strcmp(argv[i], "--language"))
    {
      i ++;
      if (i < argc)
	language = argv[i];
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected language after \"--language\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--language=", 11) && argv[i][11])
    {
      language = argv[i] + 11;
    }
    else if (!strcmp(argv[i], "--make-and-model"))
    {
      i ++;
      if (i < argc)
	make_model= argv[i];
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected make and model after \"--make-and-model\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--make-and-model=", 17) && argv[i][17])
    {
      make_model = argv[i] + 17;
    }
    else if (!strcmp(argv[i], "--product"))
    {
      i ++;
      if (i < argc)
	product = argv[i];
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected product string after \"--product\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--product=", 10) && argv[i][10])
    {
      product = argv[i] + 10;
    }
    else if (!strcmp(argv[i], "--timeout"))
    {
      i ++;
      if (i < argc)
	timeout = atoi(argv[i]);
      else
      {
	_cupsLangPuts(stderr, _("lpinfo: Expected timeout after \"--timeout\"."));
	usage();
      }
    }
    else if (!strncmp(argv[i], "--timeout=", 10) && argv[i][10])
    {
      timeout = atoi(argv[i] + 10);
    }
    else if (argv[i][0] == '-')
    {
      for (opt = argv[i] + 1; *opt; opt ++)
      {
	switch (*opt)
	{
	  case 'E' : /* Encrypt */
#ifdef HAVE_TLS
	      cupsSetEncryption(HTTP_ENCRYPT_REQUIRED);
#else
	      _cupsLangPrintf(stderr, _("%s: Sorry, no encryption support."), argv[0]);
#endif /* HAVE_TLS */
	      break;

	  case 'h' : /* Connect to host */
	      if (opt[1] != '\0')
	      {
		cupsSetServer(opt + 1);
		opt += strlen(opt) - 1;
	      }
	      else
	      {
		i ++;

		if (i >= argc)
		{
		  _cupsLangPuts(stderr, _("Error: need hostname after \"-h\" option."));
		  usage();
		}

		cupsSetServer(argv[i]);
	      }
	      break;

	  case 'l' : /* Show long listing */
	      long_status = 1;
	      break;

	  case 'm' : /* Show models */
	      if (show_models(long_status, device_id, language, make_model, product, include_schemes, exclude_schemes))
		return (1);
	      break;

	  case 'v' : /* Show available devices */
	      if (show_devices(long_status, timeout, include_schemes, exclude_schemes))
		return (1);
	      break;

	  default :
	      _cupsLangPrintf(stderr, _("%s: Unknown option \"%c\"."), argv[0], *opt);
	      usage();
	}
      }
    }
    else
    {
      _cupsLangPrintf(stderr, _("%s: Unknown argument \"%s\"."), argv[0], argv[i]);
      usage();
    }
  }

  return (0);
}


/*
 * 'device_cb()' - Device callback.
 */

static void
device_cb(
    const char *device_class,		/* I - device-class string */
    const char *device_id,		/* I - device-id string */
    const char *device_info,		/* I - device-info string */
    const char *device_make_and_model,	/* I - device-make-and-model string */
    const char *device_uri,		/* I - device-uri string */
    const char *device_location,	/* I - device-location string */
    void       *user_data)		/* I - User data */
{
  int	*long_status;			/* Show verbose info? */


 /*
  * Display the device...
  */

  long_status = (int *)user_data;

  if (*long_status)
  {
    _cupsLangPrintf(stdout,
		    _("Device: uri = %s\n"
		      "        class = %s\n"
		      "        info = %s\n"
		      "        make-and-model = %s\n"
		      "        device-id = %s\n"
		      "        location = %s"),
		    device_uri, device_class, device_info,
		    device_make_and_model, device_id, device_location);
  }
  else
    _cupsLangPrintf(stdout, "%s %s", device_class, device_uri);
}


/*
 * 'show_devices()' - Show available devices.
 */

static int				/* O - 0 on success, 1 on failure */
show_devices(
    int        long_status,		/* I - Long status report? */
    int        timeout,			/* I - Timeout */
    const char *include_schemes,	/* I - List of schemes to include */
    const char *exclude_schemes)	/* I - List of schemes to exclude */
{
  if (cupsGetDevices(CUPS_HTTP_DEFAULT, timeout, include_schemes,
                     exclude_schemes, device_cb, &long_status) != IPP_OK)
  {
    _cupsLangPrintf(stderr, "lpinfo: %s", cupsLastErrorString());
    return (1);
  }

  return (0);
}


/*
 * 'show_models()' - Show available PPDs.
 */

static int				/* O - 0 on success, 1 on failure */
show_models(
    int        long_status,		/* I - Long status report? */
    const char *device_id,		/* I - 1284 device ID */
    const char *language,		/* I - Language */
    const char *make_model,		/* I - Make and model */
    const char *product,		/* I - Product */
    const char *include_schemes,	/* I - List of schemes to include */
    const char *exclude_schemes)	/* I - List of schemes to exclude */
{
  ipp_t		*request,		/* IPP Request */
		*response;		/* IPP Response */
  ipp_attribute_t *attr;		/* Current attribute */
  const char	*ppd_device_id,		/* Pointer to ppd-device-id */
		*ppd_language,		/* Pointer to ppd-natural-language */
		*ppd_make_model,	/* Pointer to ppd-make-and-model */
		*ppd_name;		/* Pointer to ppd-name */
  cups_option_t	option;			/* in/exclude-schemes option */


 /*
  * Build a CUPS_GET_PPDS request...
  */

  request = ippNewRequest(CUPS_GET_PPDS);

  if (device_id)
    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_TEXT, "ppd-device-id",
                 NULL, device_id);
  if (language)
    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "ppd-language",
                 NULL, language);
  if (make_model)
    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_TEXT, "ppd-make-and-model",
                 NULL, make_model);
  if (product)
    ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_TEXT, "ppd-product",
                 NULL, product);

  if (include_schemes)
  {
    option.name  = "include-schemes";
    option.value = (char *)include_schemes;

    cupsEncodeOptions2(request, 1, &option, IPP_TAG_OPERATION);
  }

  if (exclude_schemes)
  {
    option.name  = "exclude-schemes";
    option.value = (char *)exclude_schemes;

    cupsEncodeOptions2(request, 1, &option, IPP_TAG_OPERATION);
  }

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

  if ((response = cupsDoRequest(CUPS_HTTP_DEFAULT, request, "/")) != NULL)
  {
   /*
    * Loop through the device list and display them...
    */

    if (response->request.status.status_code > IPP_OK_CONFLICT)
    {
      _cupsLangPrintf(stderr, "lpinfo: %s", cupsLastErrorString());
      ippDelete(response);
      return (1);
    }

    for (attr = response->attrs; attr != NULL; attr = attr->next)
    {
     /*
      * Skip leading attributes until we hit a PPD...
      */

      while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
        attr = attr->next;

      if (attr == NULL)
        break;

     /*
      * Pull the needed attributes from this PPD...
      */

      ppd_device_id  = "NONE";
      ppd_language   = NULL;
      ppd_make_model = NULL;
      ppd_name       = NULL;

      while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
      {
        if (!strcmp(attr->name, "ppd-device-id") &&
	    attr->value_tag == IPP_TAG_TEXT)
	  ppd_device_id = attr->values[0].string.text;
        else if (!strcmp(attr->name, "ppd-natural-language") &&
	         attr->value_tag == IPP_TAG_LANGUAGE)
	  ppd_language = attr->values[0].string.text;
        else if (!strcmp(attr->name, "ppd-make-and-model") &&
	         attr->value_tag == IPP_TAG_TEXT)
	  ppd_make_model = attr->values[0].string.text;
        else if (!strcmp(attr->name, "ppd-name") &&
	         attr->value_tag == IPP_TAG_NAME)
	  ppd_name = attr->values[0].string.text;

        attr = attr->next;
      }

     /*
      * See if we have everything needed...
      */

      if (ppd_language == NULL || ppd_make_model == NULL || ppd_name == NULL)
      {
        if (attr == NULL)
	  break;
	else
          continue;
      }

     /*
      * Display the device...
      */

      if (long_status)
      {
	_cupsLangPrintf(stdout,
	                _("Model:  name = %s\n"
			  "        natural_language = %s\n"
			  "        make-and-model = %s\n"
			  "        device-id = %s"),
			ppd_name, ppd_language, ppd_make_model, ppd_device_id);
      }
      else
        _cupsLangPrintf(stdout, "%s %s", ppd_name, ppd_make_model);

      if (attr == NULL)
        break;
    }

    ippDelete(response);

   /*
    * Show the "everywhere" model, which is handled by the lpadmin command...
    */

    if ((!include_schemes || strstr(include_schemes, "everywhere")) && (!exclude_schemes || !strstr(exclude_schemes, "everywhere")))
    {
      if (long_status)
      {
	_cupsLangPrintf(stdout,
	                _("Model:  name = %s\n"
			  "        natural_language = %s\n"
			  "        make-and-model = %s\n"
			  "        device-id = %s"),
			"everywhere", cupsLangDefault()->language, "IPP Everywhere™", "CMD:PwgRaster");
      }
      else
        _cupsLangPuts(stdout, "everywhere IPP Everywhere");
    }
  }
  else
  {
    _cupsLangPrintf(stderr, "lpinfo: %s", cupsLastErrorString());

    return (1);
  }

  return (0);
}


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

static void
usage(void)
{
  _cupsLangPuts(stdout, _("Usage: lpinfo [options] -m\n"
                          "       lpinfo [options] -v"));
  _cupsLangPuts(stdout, _("Options:"));
  _cupsLangPuts(stdout, _("-E                      Encrypt the connection to the server"));
  _cupsLangPuts(stdout, _("-h server[:port]        Connect to the named server and port"));
  _cupsLangPuts(stdout, _("-l                      Show verbose (long) output"));
  _cupsLangPuts(stdout, _("-m                      Show models"));
  _cupsLangPuts(stdout, _("-U username             Specify the username to use for authentication"));
  _cupsLangPuts(stdout, _("-v                      Show devices"));
  _cupsLangPuts(stdout, _("--device-id device-id   Show models matching the given IEEE 1284 device ID"));
  _cupsLangPuts(stdout, _("--exclude-schemes scheme-list\n"
                          "                        Exclude the specified URI schemes"));
  _cupsLangPuts(stdout, _("--include-schemes scheme-list\n"
                          "                        Include only the specified URI schemes"));
  _cupsLangPuts(stdout, _("--language locale       Show models matching the given locale"));
  _cupsLangPuts(stdout, _("--make-and-model name   Show models matching the given make and model name"));
  _cupsLangPuts(stdout, _("--product name          Show models matching the given PostScript product"));
  _cupsLangPuts(stdout, _("--timeout seconds       Specify the maximum number of seconds to discover devices"));

  exit(1);
}