157 lines
4.7 KiB
C
157 lines
4.7 KiB
C
/*
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* Copyright (c) 2001-2003
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* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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* All rights reserved.
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*
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* Author: Harti Brandt <harti@freebsd.org>
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*
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* Redistribution of this software and documentation and use in source and
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* binary forms, with or without modification, are permitted provided that
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* the following conditions are met:
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*
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* 1. Redistributions of source code or documentation must retain the above
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* copyright notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY FRAUNHOFER FOKUS
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* AND ITS CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* FRAUNHOFER FOKUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Begemot: bsnmp/lib/snmpagent.h,v 1.12 2004/04/13 15:18:15 novo Exp $
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*
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* Header file for SNMP functions. This requires snmp.h to be included.
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*/
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#ifndef snmp_agent_h_
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#define snmp_agent_h_
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struct snmp_dependency;
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enum snmp_ret {
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/* OK, generate a response */
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SNMP_RET_OK = 0,
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/* Error, ignore packet (no response) */
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SNMP_RET_IGN = 1,
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/* Error, generate response from original packet */
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SNMP_RET_ERR = 2
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};
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/* Semi-Opaque object for SET operations */
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struct snmp_context {
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u_int var_index;
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struct snmp_scratch *scratch;
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struct snmp_dependency *dep;
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void *data; /* user data */
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enum snmp_ret code; /* return code */
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};
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struct snmp_scratch {
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void *ptr1;
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void *ptr2;
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u_int32_t int1;
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u_int32_t int2;
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};
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enum snmp_depop {
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SNMP_DEPOP_COMMIT,
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SNMP_DEPOP_ROLLBACK,
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SNMP_DEPOP_FINISH
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};
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typedef int (*snmp_depop_t)(struct snmp_context *, struct snmp_dependency *,
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enum snmp_depop);
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struct snmp_dependency {
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struct asn_oid obj;
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struct asn_oid idx;
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};
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/*
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* The TREE
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*/
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enum snmp_node_type {
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SNMP_NODE_LEAF = 1,
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SNMP_NODE_COLUMN
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};
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enum snmp_op {
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SNMP_OP_GET = 1,
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SNMP_OP_GETNEXT,
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SNMP_OP_SET,
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SNMP_OP_COMMIT,
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SNMP_OP_ROLLBACK,
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};
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typedef int (*snmp_op_t)(struct snmp_context *, struct snmp_value *,
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u_int, u_int, enum snmp_op);
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struct snmp_node {
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struct asn_oid oid;
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const char *name; /* name of the leaf */
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enum snmp_node_type type; /* type of this node */
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enum snmp_syntax syntax;
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snmp_op_t op;
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u_int flags;
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u_int32_t index; /* index data */
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void *data; /* application data */
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void *tree_data; /* application data */
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};
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extern struct snmp_node *tree;
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extern u_int tree_size;
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#define SNMP_NODE_CANSET 0x0001 /* SET allowed */
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#define SNMP_INDEXES_MAX 7
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#define SNMP_INDEX_SHIFT 4
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#define SNMP_INDEX_MASK 0xf
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#define SNMP_INDEX_COUNT(V) ((V) & SNMP_INDEX_MASK)
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#define SNMP_INDEX(V,I) \
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(((V) >> (((I) + 1) * SNMP_INDEX_SHIFT)) & SNMP_INDEX_MASK)
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enum {
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SNMP_TRACE_GET = 0x00000001,
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SNMP_TRACE_GETNEXT = 0x00000002,
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SNMP_TRACE_SET = 0x00000004,
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SNMP_TRACE_DEPEND = 0x00000008,
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SNMP_TRACE_FIND = 0x00000010,
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};
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/* trace flag for the following functions */
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extern u_int snmp_trace;
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/* called to write the trace */
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extern void (*snmp_debug)(const char *fmt, ...);
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enum snmp_ret snmp_get(struct snmp_pdu *pdu, struct asn_buf *resp_b,
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struct snmp_pdu *resp, void *);
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enum snmp_ret snmp_getnext(struct snmp_pdu *pdu, struct asn_buf *resp_b,
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struct snmp_pdu *resp, void *);
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enum snmp_ret snmp_getbulk(struct snmp_pdu *pdu, struct asn_buf *resp_b,
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struct snmp_pdu *resp, void *);
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enum snmp_ret snmp_set(struct snmp_pdu *pdu, struct asn_buf *resp_b,
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struct snmp_pdu *resp, void *);
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enum snmp_ret snmp_make_errresp(const struct snmp_pdu *, struct asn_buf *,
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struct asn_buf *);
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struct snmp_dependency *snmp_dep_lookup(struct snmp_context *,
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const struct asn_oid *, const struct asn_oid *, size_t, snmp_depop_t);
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struct snmp_context *snmp_init_context(void);
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int snmp_dep_commit(struct snmp_context *);
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int snmp_dep_rollback(struct snmp_context *);
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void snmp_dep_finish(struct snmp_context *);
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#endif
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