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git.proxmox.com Git - mirror_frr.git/blob - lib/snmp.c
2 * Copyright (C) 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <net-snmp/net-snmp-config.h>
24 #include <net-snmp/net-snmp-includes.h>
28 #define min(A,B) ((A) < (B) ? (A) : (B))
31 oid_compare (const oid
*o1
, int o1_len
, const oid
*o2
, int o2_len
)
35 for (i
= 0; i
< min (o1_len
, o2_len
); i
++)
39 else if (o1
[i
] > o2
[i
])
51 oid_copy (void *dest
, const void *src
, size_t size
)
53 return memcpy (dest
, src
, size
* sizeof (oid
));
57 oid2in_addr (oid oid
[], int len
, struct in_addr
*addr
)
65 pnt
= (u_char
*) addr
;
67 for (i
= 0; i
< len
; i
++)
72 oid_copy_addr (oid oid
[], struct in_addr
*addr
, int len
)
80 pnt
= (u_char
*) addr
;
82 for (i
= 0; i
< len
; i
++)
87 smux_header_generic (struct variable
*v
, oid
*name
, size_t *length
, int exact
,
88 size_t *var_len
, WriteMethod
**write_method
)
90 oid fulloid
[MAX_OID_LEN
];
93 oid_copy (fulloid
, v
->name
, v
->namelen
);
94 fulloid
[v
->namelen
] = 0;
95 /* Check against full instance. */
96 ret
= oid_compare (name
, *length
, fulloid
, v
->namelen
+ 1);
98 /* Check single instance. */
99 if ((exact
&& (ret
!= 0)) || (!exact
&& (ret
>= 0)))
102 /* In case of getnext, fill in full instance. */
103 memcpy (name
, fulloid
, (v
->namelen
+ 1) * sizeof (oid
));
104 *length
= v
->namelen
+ 1;
107 *var_len
= sizeof(long); /* default to 'long' results */
109 return MATCH_SUCCEEDED
;
113 smux_header_table (struct variable
*v
, oid
*name
, size_t *length
, int exact
,
114 size_t *var_len
, WriteMethod
**write_method
)
116 /* If the requested OID name is less than OID prefix we
117 handle, adjust it to our prefix. */
118 if ((oid_compare (name
, *length
, v
->name
, v
->namelen
)) < 0)
122 oid_copy(name
, v
->name
, v
->namelen
);
123 *length
= v
->namelen
;
127 *var_len
= sizeof(long);
129 return MATCH_SUCCEEDED
;