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162 lines
4.3 KiB
C
162 lines
4.3 KiB
C
/* SNMP support
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* Copyright (C) 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _ZEBRA_SNMP_H
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#define _ZEBRA_SNMP_H
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#define SMUX_PORT_DEFAULT 199
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#define SMUXMAXPKTSIZE 1500
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#define SMUXMAXSTRLEN 256
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#define SMUX_OPEN (ASN_APPLICATION | ASN_CONSTRUCTOR | 0)
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#define SMUX_CLOSE (ASN_APPLICATION | ASN_PRIMITIVE | 1)
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#define SMUX_RREQ (ASN_APPLICATION | ASN_CONSTRUCTOR | 2)
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#define SMUX_RRSP (ASN_APPLICATION | ASN_PRIMITIVE | 3)
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#define SMUX_SOUT (ASN_APPLICATION | ASN_PRIMITIVE | 4)
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#define SMUX_GET (ASN_CONTEXT | ASN_CONSTRUCTOR | 0)
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#define SMUX_GETNEXT (ASN_CONTEXT | ASN_CONSTRUCTOR | 1)
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#define SMUX_GETRSP (ASN_CONTEXT | ASN_CONSTRUCTOR | 2)
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#define SMUX_SET (ASN_CONTEXT | ASN_CONSTRUCTOR | 3)
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#define SMUX_TRAP (ASN_CONTEXT | ASN_CONSTRUCTOR | 4)
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#define SMUX_MAX_FAILURE 3
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/* Structures here are mostly compatible with UCD SNMP 4.1.1 */
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#define MATCH_FAILED (-1)
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#define MATCH_SUCCEEDED 0
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/* SYNTAX TruthValue from SNMPv2-TC. */
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#define SNMP_TRUE 1
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#define SNMP_FALSE 2
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/* SYNTAX RowStatus from SNMPv2-TC. */
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#define SNMP_VALID 1
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#define SNMP_INVALID 2
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#define IN_ADDR_SIZE sizeof(struct in_addr)
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struct variable;
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#define REGISTER_MIB(descr, var, vartype, theoid) \
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smux_register_mib(descr, (struct variable *)var, sizeof(struct vartype), \
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sizeof(var)/sizeof(struct vartype), \
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theoid, sizeof(theoid)/sizeof(oid))
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typedef int (WriteMethod)(int action,
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u_char *var_val,
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u_char var_val_type,
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size_t var_val_len,
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u_char *statP,
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oid *name,
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size_t length,
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struct variable *v);
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typedef u_char *(FindVarMethod)(struct variable *v,
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oid *name,
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size_t *length,
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int exact,
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size_t *var_len,
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WriteMethod **write_method);
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/* SNMP variable */
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struct variable
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{
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/* Index of the MIB.*/
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u_char magic;
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/* Type of variable. */
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char type;
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/* Access control list. */
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u_short acl;
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/* Callback function. */
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FindVarMethod *findVar;
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/* Suffix of the MIB. */
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int namelen;
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oid name[MAX_OID_LEN];
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};
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/* SNMP tree. */
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struct subtree
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{
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/* Tree's oid. */
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oid name[MAX_OID_LEN];
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u_char name_len;
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/* List of the variables. */
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struct variable *variables;
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/* Length of the variables list. */
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int variables_num;
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/* Width of the variables list. */
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int variables_width;
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/* Registered flag. */
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int registered;
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};
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struct trap_object
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{
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FindVarMethod *findVar;
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int namelen;
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oid name[MAX_OID_LEN];
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};
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/* Declare SMUX return value. */
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#define SNMP_LOCAL_VARIABLES \
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static long snmp_int_val; \
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static struct in_addr snmp_in_addr_val;
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#define SNMP_INTEGER(V) \
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( \
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*var_len = sizeof (snmp_int_val), \
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snmp_int_val = V, \
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(u_char *) &snmp_int_val \
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)
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#define SNMP_IPADDRESS(V) \
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( \
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*var_len = sizeof (struct in_addr), \
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snmp_in_addr_val = V, \
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(u_char *) &snmp_in_addr_val \
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)
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extern void smux_init (struct thread_master *tm);
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extern void smux_start (void);
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extern void smux_register_mib(const char *, struct variable *,
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size_t, int, oid [], size_t);
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extern int smux_header_generic (struct variable *, oid [], size_t *,
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int, size_t *, WriteMethod **);
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extern int smux_trap (const oid *, size_t, const oid *, size_t,
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const struct trap_object *,
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size_t, unsigned int, u_char);
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extern int oid_compare (oid *, int, oid *, int);
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extern void oid2in_addr (oid [], int, struct in_addr *);
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extern void *oid_copy (void *, const void *, size_t);
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extern void oid_copy_addr (oid [], struct in_addr *, int);
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#endif /* _ZEBRA_SNMP_H */
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