[thirdparty/cups.git] / cups / snmp-private.h

/*
 * "$Id$"
 *
 *   SNMP definitions for the Common UNIX Printing System (CUPS).
 *
 *   This API is PRIVATE and subject to change.  No third-party applications
 *   should use the SNMP API defined in this file.
 *
 *   Copyright 2007-2008 by Apple Inc.
 *   Copyright 2006-2007 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.
 */

#ifndef _CUPS_SNMP_H_
#  define _CUPS_SNMP_H_


/*
 * Include necessary headers.
 */

#include "http.h"


/*
 * Constants...
 */

#define CUPS_SNMP_PORT		161	/* SNMP well-known port */
#define CUPS_SNMP_MAX_OID	128	/* Maximum number of OID numbers */
#define CUPS_SNMP_MAX_PACKET	1472	/* Maximum size of SNMP packet */
#define CUPS_SNMP_MAX_STRING	512	/* Maximum size of string */
#define CUPS_SNMP_VERSION_1	0	/* SNMPv1 */


/*
 * Types...
 */

enum cups_asn1_e			/**** ASN1 request/object types ****/
{
  CUPS_ASN1_END_OF_CONTENTS = 0x00,	/* End-of-contents */
  CUPS_ASN1_BOOLEAN = 0x01,		/* BOOLEAN */
  CUPS_ASN1_INTEGER = 0x02,		/* INTEGER or ENUMERATION */
  CUPS_ASN1_BIT_STRING = 0x03,		/* BIT STRING */
  CUPS_ASN1_OCTET_STRING = 0x04,	/* OCTET STRING */
  CUPS_ASN1_NULL_VALUE = 0x05,		/* NULL VALUE */
  CUPS_ASN1_OID = 0x06,			/* OBJECT IDENTIFIER */
  CUPS_ASN1_SEQUENCE = 0x30,		/* SEQUENCE */
  CUPS_ASN1_HEX_STRING = 0x40,		/* Binary string aka Hex-STRING */
  CUPS_ASN1_COUNTER = 0x41,		/* 32-bit unsigned aka Counter32 */
  CUPS_ASN1_GAUGE = 0x42,		/* 32-bit unsigned aka Gauge32 */
  CUPS_ASN1_TIMETICKS = 0x43,		/* 32-bit unsigned aka Timeticks32 */
  CUPS_ASN1_GET_REQUEST = 0xa0,		/* GetRequest-PDU */
  CUPS_ASN1_GET_NEXT_REQUEST = 0xa1,	/* GetNextRequest-PDU */
  CUPS_ASN1_GET_RESPONSE = 0xa2		/* GetResponse-PDU */
};
typedef enum cups_asn1_e cups_asn1_t;	/**** ASN1 request/object types ****/

struct cups_snmp_hexstring_s		/**** Hex-STRING value ****/
{
  unsigned char	bytes[CUPS_SNMP_MAX_STRING];
					/* Bytes in string */
  int		num_bytes;		/* Number of bytes */
};

union cups_snmp_value_u			/**** Object value ****/
{
  int		boolean;		/* Boolean value */
  int		integer;		/* Integer value */
  unsigned	counter;		/* Counter value */
  unsigned	gauge;			/* Gauge value */
  unsigned	timeticks;		/* Timeticks  value */
  int		oid[CUPS_SNMP_MAX_OID];	/* OID value */
  char		string[CUPS_SNMP_MAX_STRING];
					/* String value */
  struct cups_snmp_hexstring_s hex_string;
					/* Hex string value */
};

typedef struct cups_snmp_s		/**** SNMP data packet ****/
{
  const char	*error;			/* Encode/decode error */
  http_addr_t	address;		/* Source address */
  int		version;		/* Version number */
  char		community[CUPS_SNMP_MAX_STRING];
					/* Community name */
  cups_asn1_t	request_type;		/* Request type */
  int		request_id;		/* request-id value */
  int		error_status;		/* error-status value */
  int		error_index;		/* error-index value */
  int		object_name[CUPS_SNMP_MAX_OID];
					/* object-name value */
  cups_asn1_t	object_type;		/* object-value type */
  union cups_snmp_value_u
		object_value;		/* object-value value */
} cups_snmp_t;

typedef void (*cups_snmp_cb_t)(cups_snmp_t *packet, void *data);

/*
 * Prototypes...
 */

#  ifdef __cplusplus
extern "C" {
#  endif /* __cplusplus */

extern void		_cupsSNMPClose(int fd) _CUPS_API_1_4;
extern int		*_cupsSNMPCopyOID(int *dst, const int *src, int dstsize)
			    _CUPS_API_1_4;
extern const char	*_cupsSNMPDefaultCommunity(void) _CUPS_API_1_4;
extern int		_cupsSNMPIsOID(cups_snmp_t *packet, const int *oid)
			    _CUPS_API_1_4;
extern int		_cupsSNMPIsOIDPrefixed(cups_snmp_t *packet,
			                      const int *prefix) _CUPS_API_1_4;
extern int		_cupsSNMPOpen(int family) _CUPS_API_1_4;
extern cups_snmp_t	*_cupsSNMPRead(int fd, cups_snmp_t *packet,
			               double timeout) _CUPS_API_1_4;
extern void		_cupsSNMPSetDebug(int level) _CUPS_API_1_4;
extern int		_cupsSNMPWalk(int fd, http_addr_t *address, int version,
			              const char *community, const int *prefix,
				      double timeout, cups_snmp_cb_t cb,
				      void *data) _CUPS_API_1_4;
extern int		_cupsSNMPWrite(int fd, http_addr_t *address, int version,
				       const char *community,
				       cups_asn1_t request_type,
				       const unsigned request_id,
				       const int *oid) _CUPS_API_1_4;

#  ifdef __cplusplus
}
#  endif /* __cplusplus */
#endif /* !_CUPS_SNMP_H_ */


/*
 * End of "$Id$".
 */
Commit	Line	Data
7a14d768 MS	1	/*
	2	* "$Id$"
	3	*
	4	* SNMP definitions for the Common UNIX Printing System (CUPS).
	5	*
	6	* This API is PRIVATE and subject to change. No third-party applications
	7	* should use the SNMP API defined in this file.
	8	*
	9	* Copyright 2007-2008 by Apple Inc.
	10	* Copyright 2006-2007 by Easy Software Products, all rights reserved.
	11	*
	12	* These coded instructions, statements, and computer programs are the
	13	* property of Apple Inc. and are protected by Federal copyright
	14	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	15	* "LICENSE" which should have been included with this file. If this
	16	* file is missing or damaged, see the license at "http://www.cups.org/".
7a14d768 MS	17	*
	18	* This file is subject to the Apple OS-Developed Software exception.
	19	*/
	20
	21	#ifndef _CUPS_SNMP_H_
	22	# define _CUPS_SNMP_H_
	23
	24
	25	/*
	26	* Include necessary headers.
	27	*/
	28
	29	#include "http.h"
	30
	31
	32	/*
	33	* Constants...
	34	*/
	35
	36	#define CUPS_SNMP_PORT 161 /* SNMP well-known port */
	37	#define CUPS_SNMP_MAX_OID 128 /* Maximum number of OID numbers */
	38	#define CUPS_SNMP_MAX_PACKET 1472 /* Maximum size of SNMP packet */
	39	#define CUPS_SNMP_MAX_STRING 512 /* Maximum size of string */
	40	#define CUPS_SNMP_VERSION_1 0 /* SNMPv1 */
	41
	42
	43	/*
	44	* Types...
	45	*/
	46
	47	enum cups_asn1_e /** ASN1 request/object types **/
	48	{
	49	CUPS_ASN1_END_OF_CONTENTS = 0x00, /* End-of-contents */
	50	CUPS_ASN1_BOOLEAN = 0x01, /* BOOLEAN */
	51	CUPS_ASN1_INTEGER = 0x02, /* INTEGER or ENUMERATION */
	52	CUPS_ASN1_BIT_STRING = 0x03, /* BIT STRING */
	53	CUPS_ASN1_OCTET_STRING = 0x04, /* OCTET STRING */
	54	CUPS_ASN1_NULL_VALUE = 0x05, /* NULL VALUE */
	55	CUPS_ASN1_OID = 0x06, /* OBJECT IDENTIFIER */
	56	CUPS_ASN1_SEQUENCE = 0x30, /* SEQUENCE */
	57	CUPS_ASN1_HEX_STRING = 0x40, /* Binary string aka Hex-STRING */
	58	CUPS_ASN1_COUNTER = 0x41, /* 32-bit unsigned aka Counter32 */
	59	CUPS_ASN1_GAUGE = 0x42, /* 32-bit unsigned aka Gauge32 */
	60	CUPS_ASN1_TIMETICKS = 0x43, /* 32-bit unsigned aka Timeticks32 */
	61	CUPS_ASN1_GET_REQUEST = 0xa0, /* GetRequest-PDU */
	62	CUPS_ASN1_GET_NEXT_REQUEST = 0xa1, /* GetNextRequest-PDU */
	63	CUPS_ASN1_GET_RESPONSE = 0xa2 /* GetResponse-PDU */
	64	};
	65	typedef enum cups_asn1_e cups_asn1_t; /** ASN1 request/object types **/
	66
	67	struct cups_snmp_hexstring_s /** Hex-STRING value **/
	68	{
	69	unsigned char bytes[CUPS_SNMP_MAX_STRING];
	70	/* Bytes in string */
	71	int num_bytes; /* Number of bytes */
	72	};
	73
	74	union cups_snmp_value_u /** Object value **/
	75	{
	76	int boolean; /* Boolean value */
	77	int integer; /* Integer value */
	78	unsigned counter; /* Counter value */
	79	unsigned gauge; /* Gauge value */
	80	unsigned timeticks; /* Timeticks value */
81	int oid[CUPS_SNMP_MAX_OID]; /* OID value */
82	char string[CUPS_SNMP_MAX_STRING];
83	/* String value */
84	struct cups_snmp_hexstring_s hex_string;
85	/* Hex string value */
86	};
87
88	typedef struct cups_snmp_s /** SNMP data packet **/
89	{
90	const char error; / Encode/decode error */
91	http_addr_t address; /* Source address */
92	int version; /* Version number */
93	char community[CUPS_SNMP_MAX_STRING];
94	/* Community name */
95	cups_asn1_t request_type; /* Request type */
96	int request_id; /* request-id value */
97	int error_status; /* error-status value */
98	int error_index; /* error-index value */
99	int object_name[CUPS_SNMP_MAX_OID];
100	/* object-name value */
101	cups_asn1_t object_type; /* object-value type */
102	union cups_snmp_value_u
103	object_value; /* object-value value */
104	} cups_snmp_t;
105
106	typedef void (cups_snmp_cb_t)(cups_snmp_t packet, void *data);
107
108	/*
109	* Prototypes...
110	*/
111
112	# ifdef __cplusplus
113	extern "C" {
114	# endif /* __cplusplus */
115
116	extern void _cupsSNMPClose(int fd) _CUPS_API_1_4;
117	extern int _cupsSNMPCopyOID(int dst, const int *src, int dstsize)
118	_CUPS_API_1_4;
119	extern const char *_cupsSNMPDefaultCommunity(void) _CUPS_API_1_4;
120	extern int _cupsSNMPIsOID(cups_snmp_t packet, const int oid)
121	_CUPS_API_1_4;
122	extern int _cupsSNMPIsOIDPrefixed(cups_snmp_t *packet,
123	const int *prefix) _CUPS_API_1_4;
124	extern int _cupsSNMPOpen(int family) _CUPS_API_1_4;
125	extern cups_snmp_t _cupsSNMPRead(int fd, cups_snmp_t packet,
126	double timeout) _CUPS_API_1_4;
127	extern void _cupsSNMPSetDebug(int level) _CUPS_API_1_4;
128	extern int _cupsSNMPWalk(int fd, http_addr_t *address, int version,
129	const char community, const int prefix,
130	double timeout, cups_snmp_cb_t cb,
131	void *data) _CUPS_API_1_4;
132	extern int _cupsSNMPWrite(int fd, http_addr_t *address, int version,
133	const char *community,
134	cups_asn1_t request_type,
135	const unsigned request_id,
136	const int *oid) _CUPS_API_1_4;
137
138	# ifdef __cplusplus
139	}
140	# endif /* __cplusplus */
141	#endif /* !_CUPS_SNMP_H_ */
142
143
144	/*
145	* End of "$Id$".
146	*/