Пример #1
0
int					/* O - Number of OIDs found or -1 on error */
_cupsSNMPWalk(int            fd,	/* I - SNMP socket */
              http_addr_t    *address,	/* I - Address to query */
	      int            version,	/* I - SNMP version */
	      const char     *community,/* I - Community name */
              const int      *prefix,	/* I - OID prefix */
	      double         timeout,	/* I - Timeout for each response in seconds */
	      cups_snmp_cb_t cb,	/* I - Function to call for each response */
	      void           *data)	/* I - User data pointer that is passed to the callback function */
{
  int		count = 0;		/* Number of OIDs found */
  int		request_id = 0;		/* Current request ID */
  cups_snmp_t	packet;			/* Current response packet */
  int		lastoid[CUPS_SNMP_MAX_OID];
					/* Last OID we got */


 /*
  * Range check input...
  */

  DEBUG_printf(("4_cupsSNMPWalk(fd=%d, address=%p, version=%d, "
                "community=\"%s\", prefix=%p, timeout=%.1f, cb=%p, data=%p)",
		fd, address, version, community, prefix, timeout, cb, data));

  if (fd < 0 || !address || version != CUPS_SNMP_VERSION_1 || !community ||
      !prefix || !cb)
  {
    DEBUG_puts("5_cupsSNMPWalk: Returning -1");

    return (-1);
  }

 /*
  * Copy the OID prefix and then loop until we have no more OIDs...
  */

  _cupsSNMPCopyOID(packet.object_name, prefix, CUPS_SNMP_MAX_OID);
  lastoid[0] = -1;

  for (;;)
  {
    request_id ++;

    if (!_cupsSNMPWrite(fd, address, version, community,
                        CUPS_ASN1_GET_NEXT_REQUEST, request_id,
		        packet.object_name))
    {
      DEBUG_puts("5_cupsSNMPWalk: Returning -1");

      return (-1);
    }

    if (!_cupsSNMPRead(fd, &packet, timeout))
    {
      DEBUG_puts("5_cupsSNMPWalk: Returning -1");

      return (-1);
    }

    if (!_cupsSNMPIsOIDPrefixed(&packet, prefix) ||
        _cupsSNMPIsOID(&packet, lastoid))
    {
      DEBUG_printf(("5_cupsSNMPWalk: Returning %d", count));

      return (count);
    }

    if (packet.error || packet.error_status)
    {
      DEBUG_printf(("5_cupsSNMPWalk: Returning %d", count > 0 ? count : -1));

      return (count > 0 ? count : -1);
    }

    _cupsSNMPCopyOID(lastoid, packet.object_name, CUPS_SNMP_MAX_OID);

    count ++;

    (*cb)(&packet, data);
  }
}
Пример #2
0
static void
backend_init_supplies(
    int         snmp_fd,		/* I - SNMP socket */
    http_addr_t *addr)			/* I - Printer address */
{
  int		i,			/* Looping var */
		type;			/* Current marker type */
  cups_file_t	*cachefile;		/* Cache file */
  const char	*cachedir;		/* CUPS_CACHEDIR value */
  char		addrstr[1024],		/* Address string */
		cachefilename[1024],	/* Cache filename */
		description[CUPS_SNMP_MAX_STRING],
					/* Device description string */
		value[CUPS_MAX_SUPPLIES * (CUPS_SNMP_MAX_STRING * 4 + 3)],
					/* Value string */
		*ptr,			/* Pointer into value string */
		*name_ptr;		/* Pointer into name string */
  cups_snmp_t	packet;			/* SNMP response packet */
  ppd_file_t	*ppd;			/* PPD file for this queue */
  ppd_attr_t	*ppdattr;		/* cupsSNMPSupplies attribute */
  static const char * const types[] =	/* Supply types */
		{
		  "other",
		  "unknown",
		  "toner",
		  "waste-toner",
		  "ink",
		  "ink-cartridge",
		  "ink-ribbon",
		  "waste-ink",
		  "opc",
		  "developer",
		  "fuser-oil",
		  "solid-wax",
		  "ribbon-wax",
		  "waste-wax",
		  "fuser",
		  "corona-wire",
		  "fuser-oil-wick",
		  "cleaner-unit",
		  "fuser-cleaning-pad",
		  "transfer-unit",
		  "toner-cartridge",
		  "fuser-oiler",
		  "water",
		  "waste-water",
		  "glue-water-additive",
		  "waste-paper",
		  "binding-supply",
		  "banding-supply",
		  "stitching-wire",
		  "shrink-wrap",
		  "paper-wrap",
		  "staples",
		  "inserts",
		  "covers"
		};


 /*
  * Reset state information...
  */

  current_addr  = *addr;
  current_state = -1;
  num_supplies  = -1;
  charset       = -1;

  memset(supplies, 0, sizeof(supplies));

 /*
  * See if we should be getting supply levels via SNMP...
  */

  if ((ppd = ppdOpenFile(getenv("PPD"))) == NULL ||
      ((ppdattr = ppdFindAttr(ppd, "cupsSNMPSupplies", NULL)) != NULL &&
       ppdattr->value && _cups_strcasecmp(ppdattr->value, "true")))
  {
    ppdClose(ppd);
    return;
  }

  if ((ppdattr = ppdFindAttr(ppd, "cupsSNMPQuirks", NULL)) != NULL)
  {
    if (!_cups_strcasecmp(ppdattr->value, "capacity"))
      quirks |= CUPS_SNMP_CAPACITY;
  }

  ppdClose(ppd);

 /*
  * Get the device description...
  */

  if (!_cupsSNMPWrite(snmp_fd, addr, CUPS_SNMP_VERSION_1,
		     _cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
		     hrDeviceDescr))
    return;

  if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
      packet.object_type != CUPS_ASN1_OCTET_STRING)
  {
    strlcpy(description, "Unknown", sizeof(description));
    num_supplies = 0;
  }
  else
    strlcpy(description, (char *)packet.object_value.string.bytes,
            sizeof(description));

  fprintf(stderr, "DEBUG2: hrDeviceDesc=\"%s\"\n", description);

 /*
  * See if we have already queried this device...
  */

  httpAddrString(addr, addrstr, sizeof(addrstr));

  if ((cachedir = getenv("CUPS_CACHEDIR")) == NULL)
    cachedir = CUPS_CACHEDIR;

  snprintf(cachefilename, sizeof(cachefilename), "%s/%s.snmp", cachedir,
           addrstr);

  if ((cachefile = cupsFileOpen(cachefilename, "r")) != NULL)
  {
   /*
    * Yes, read the cache file:
    *
    *     3 num_supplies charset
    *     device description
    *     supply structures...
    */

    if (cupsFileGets(cachefile, value, sizeof(value)))
    {
      if (sscanf(value, "3 %d%d", &num_supplies, &charset) == 2 &&
          num_supplies <= CUPS_MAX_SUPPLIES &&
          cupsFileGets(cachefile, value, sizeof(value)))
      {
        if (!strcmp(description, value))
	  cupsFileRead(cachefile, (char *)supplies,
	               (size_t)num_supplies * sizeof(backend_supplies_t));
        else
	{
	  num_supplies = -1;
	  charset      = -1;
	}
      }
      else
      {
        num_supplies = -1;
	charset      = -1;
      }
    }

    cupsFileClose(cachefile);
  }

 /*
  * If the cache information isn't correct, scan for supplies...
  */

  if (charset < 0)
  {
   /*
    * Get the configured character set...
    */

    int	oid[CUPS_SNMP_MAX_OID];		/* OID for character set */


    if (!_cupsSNMPWrite(snmp_fd, &current_addr, CUPS_SNMP_VERSION_1,
			_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
			prtGeneralCurrentLocalization))
      return;

    if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
	packet.object_type != CUPS_ASN1_INTEGER)
    {
      fprintf(stderr,
              "DEBUG: prtGeneralCurrentLocalization type is %x, expected %x!\n",
	      packet.object_type, CUPS_ASN1_INTEGER);
      return;
    }

    fprintf(stderr, "DEBUG2: prtGeneralCurrentLocalization=%d\n",
            packet.object_value.integer);

    _cupsSNMPCopyOID(oid, prtLocalizationCharacterSet, CUPS_SNMP_MAX_OID);
    oid[prtLocalizationCharacterSetOffset - 2] = packet.object_value.integer;


    if (!_cupsSNMPWrite(snmp_fd, &current_addr, CUPS_SNMP_VERSION_1,
			_cupsSNMPDefaultCommunity(), CUPS_ASN1_GET_REQUEST, 1,
			oid))
      return;

    if (!_cupsSNMPRead(snmp_fd, &packet, CUPS_SUPPLY_TIMEOUT) ||
	packet.object_type != CUPS_ASN1_INTEGER)
    {
      fprintf(stderr,
              "DEBUG: prtLocalizationCharacterSet type is %x, expected %x!\n",
	      packet.object_type, CUPS_ASN1_INTEGER);
      return;
    }

    fprintf(stderr, "DEBUG2: prtLocalizationCharacterSet=%d\n",
	    packet.object_value.integer);
    charset = packet.object_value.integer;
  }

  if (num_supplies < 0)
  {
   /*
    * Walk the printer configuration information...
    */

    _cupsSNMPWalk(snmp_fd, &current_addr, CUPS_SNMP_VERSION_1,
		  _cupsSNMPDefaultCommunity(), prtMarkerSuppliesEntry,
		  CUPS_SUPPLY_TIMEOUT, backend_walk_cb, NULL);
  }

 /*
  * Save the cached information...
  */

  if (num_supplies < 0)
    num_supplies = 0;

  if ((cachefile = cupsFileOpen(cachefilename, "w")) != NULL)
  {
    cupsFilePrintf(cachefile, "3 %d %d\n", num_supplies, charset);
    cupsFilePrintf(cachefile, "%s\n", description);

    if (num_supplies > 0)
      cupsFileWrite(cachefile, (char *)supplies,
                    (size_t)num_supplies * sizeof(backend_supplies_t));

    cupsFileClose(cachefile);
  }

  if (num_supplies <= 0)
    return;

 /*
  * Get the colors...
  */

  for (i = 0; i < num_supplies; i ++)
    strlcpy(supplies[i].color, "none", sizeof(supplies[i].color));

  _cupsSNMPWalk(snmp_fd, &current_addr, CUPS_SNMP_VERSION_1,
                _cupsSNMPDefaultCommunity(), prtMarkerColorantValue,
	        CUPS_SUPPLY_TIMEOUT, backend_walk_cb, NULL);

 /*
  * Output the marker-colors attribute...
  */

  for (i = 0, ptr = value; i < num_supplies; i ++, ptr += strlen(ptr))
  {
    if (i)
      *ptr++ = ',';

    strlcpy(ptr, supplies[i].color, sizeof(value) - (size_t)(ptr - value));
  }

  fprintf(stderr, "ATTR: marker-colors=%s\n", value);

 /*
  * Output the marker-names attribute (the double quoting is necessary to deal
  * with embedded quotes and commas in the marker names...)
  */

  for (i = 0, ptr = value; i < num_supplies; i ++)
  {
    if (i)
      *ptr++ = ',';

    *ptr++ = '\'';
    *ptr++ = '\"';
    for (name_ptr = supplies[i].name; *name_ptr;)
    {
      if (*name_ptr == '\\' || *name_ptr == '\"' || *name_ptr == '\'')
      {
        *ptr++ = '\\';
        *ptr++ = '\\';
        *ptr++ = '\\';
      }

      *ptr++ = *name_ptr++;
    }
    *ptr++ = '\"';
    *ptr++ = '\'';
  }

  *ptr = '\0';

  fprintf(stderr, "ATTR: marker-names=%s\n", value);

 /*
  * Output the marker-types attribute...
  */

  for (i = 0, ptr = value; i < num_supplies; i ++, ptr += strlen(ptr))
  {
    if (i)
      *ptr++ = ',';

    type = supplies[i].type;

    if (type < CUPS_TC_other || type > CUPS_TC_covers)
      strlcpy(ptr, "unknown", sizeof(value) - (size_t)(ptr - value));
    else
      strlcpy(ptr, types[type - CUPS_TC_other], sizeof(value) - (size_t)(ptr - value));
  }

  fprintf(stderr, "ATTR: marker-types=%s\n", value);
}