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/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Author: Harti Brandt <harti@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Begemot: bsnmp/lib/snmpagent.h,v 1.13 2004/08/06 08:46:56 brandt Exp $
*
* Header file for SNMP functions. This requires snmp.h to be included.
*/
#ifndef snmp_agent_h_
#define snmp_agent_h_
struct snmp_dependency;
enum snmp_ret {
/* OK, generate a response */
SNMP_RET_OK = 0,
/* Error, ignore packet (no response) */
SNMP_RET_IGN = 1,
/* Error, generate response from original packet */
SNMP_RET_ERR = 2
};
/* Semi-Opaque object for SET operations */
struct snmp_context {
u_int var_index;
struct snmp_scratch *scratch;
struct snmp_dependency *dep;
void *data; /* user data */
enum snmp_ret code; /* return code */
};
struct snmp_scratch {
void *ptr1;
void *ptr2;
uint32_t int1;
uint32_t int2;
};
enum snmp_depop {
SNMP_DEPOP_COMMIT,
SNMP_DEPOP_ROLLBACK,
SNMP_DEPOP_FINISH
};
typedef int (*snmp_depop_t)(struct snmp_context *, struct snmp_dependency *,
enum snmp_depop);
struct snmp_dependency {
struct asn_oid obj;
struct asn_oid idx;
};
/*
* The TREE
*/
enum snmp_node_type {
SNMP_NODE_LEAF = 1,
SNMP_NODE_COLUMN
};
enum snmp_op {
SNMP_OP_GET = 1,
SNMP_OP_GETNEXT,
SNMP_OP_SET,
SNMP_OP_COMMIT,
SNMP_OP_ROLLBACK,
};
typedef int (*snmp_op_t)(struct snmp_context *, struct snmp_value *,
u_int, u_int, enum snmp_op);
struct snmp_node {
struct asn_oid oid;
const char *name; /* name of the leaf */
enum snmp_node_type type; /* type of this node */
enum snmp_syntax syntax;
snmp_op_t op;
u_int flags;
uint32_t index; /* index data */
void *data; /* application data */
void *tree_data; /* application data */
};
extern struct snmp_node *tree;
extern u_int tree_size;
#define SNMP_NODE_CANSET 0x0001 /* SET allowed */
#define SNMP_INDEXES_MAX 7
#define SNMP_INDEX_SHIFT 4
#define SNMP_INDEX_MASK 0xf
#define SNMP_INDEX_COUNT(V) ((V) & SNMP_INDEX_MASK)
#define SNMP_INDEX(V,I) \
(((V) >> (((I) + 1) * SNMP_INDEX_SHIFT)) & SNMP_INDEX_MASK)
enum {
SNMP_TRACE_GET = 0x00000001,
SNMP_TRACE_GETNEXT = 0x00000002,
SNMP_TRACE_SET = 0x00000004,
SNMP_TRACE_DEPEND = 0x00000008,
SNMP_TRACE_FIND = 0x00000010,
};
/* trace flag for the following functions */
extern u_int snmp_trace;
/* called to write the trace */
extern void (*snmp_debug)(const char *fmt, ...);
enum snmp_ret snmp_get(struct snmp_pdu *pdu, struct asn_buf *resp_b,
struct snmp_pdu *resp, void *);
enum snmp_ret snmp_getnext(struct snmp_pdu *pdu, struct asn_buf *resp_b,
struct snmp_pdu *resp, void *);
enum snmp_ret snmp_getbulk(struct snmp_pdu *pdu, struct asn_buf *resp_b,
struct snmp_pdu *resp, void *);
enum snmp_ret snmp_set(struct snmp_pdu *pdu, struct asn_buf *resp_b,
struct snmp_pdu *resp, void *);
enum snmp_ret snmp_make_errresp(const struct snmp_pdu *, struct asn_buf *,
struct asn_buf *);
struct snmp_dependency *snmp_dep_lookup(struct snmp_context *,
const struct asn_oid *, const struct asn_oid *, size_t, snmp_depop_t);
struct snmp_context *snmp_init_context(void);
int snmp_dep_commit(struct snmp_context *);
int snmp_dep_rollback(struct snmp_context *);
void snmp_dep_finish(struct snmp_context *);
#endif
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