8 * Definitions for the Simple Network Management Protocol (RFC 1067).
12 /***********************************************************
13 Copyright 1988, 1989 by Carnegie Mellon University
17 Permission to use, copy, modify, and distribute this software and its
18 documentation for any purpose and without fee is hereby granted,
19 provided that the above copyright notice appear in all copies and that
20 both that copyright notice and this permission notice appear in
21 supporting documentation, and that the name of CMU not be
22 used in advertising or publicity pertaining to distribution of the
23 software without specific, written prior permission.
25 CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
26 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
27 CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
28 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
29 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
30 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
32 ******************************************************************/
35 #define SNMP_PORT 161 /* standard UDP port for SNMP agents
36 * to receive requests messages */
37 #define SNMP_TRAP_PORT 162 /* standard UDP port for SNMP
38 * managers to receive notificaion
39 * (trap and inform) messages */
41 #define SNMP_MAX_LEN 1500 /* typical maximum message size */
42 #define SNMP_MIN_MAX_LEN 484 /* minimum maximum message size */
48 * There currently exists the following SNMP versions.
49 * * (Note that only SNMPv1 is in widespread usage, and this code supports
50 * * only SNMPv1, SNMPv2c, and SNMPv3.
52 * * SNMPv1 - (full) the original version, defined by RFC 1157
53 * * SNMPsec - (historic) the first attempt to add strong security
54 * * to SNMPv1, defined by RFCs 1351, 1352, and 1353.
55 * * SNMPv2p - (historic) party-based SNMP, which was another
56 * * attempt to add strong security to SNMP, defined
57 * * by RFCs 1441, 1445, 1446, 1448, and 1449.
58 * * SNMPv2c - (experimental) community string-based SNMPv2,
59 * * which was an attempt to combine the protocol
60 * * operations of SNMPv2 with the security of
61 * * SNMPv1, defined by RFCs 1901, 1905, and 1906.
62 * * SNMPv2u - (experimental) user-based SNMPv2, which provided
63 * * security based on user names and protocol
64 * * operations of SNMPv2, defined by RFCs 1905,
66 * * SNMPv2* (or SNMPv2star) - (experimental) an attempt to add the
67 * * best features of SNMPv2p and SNMPv2u, defined
68 * * by unpublished documents found at WEB site
69 * * owned by SNMP Research (a leading SNMP vendor)
70 * * SNMPv3 - the current attempt by the IETF working group to merge
71 * * the SNMPv2u and SNMPv2* proposals into a more widly
72 * * accepted SNMPv3. It is defined by not yet published
73 * * documents of the IETF SNMPv3 WG.
75 * * SNMPv1, SNMPv2c, SNMPv2u, and SNMPv3 messages have a common
76 * * form, which is an ASN.1 sequence containing a message version
77 * * field, followed by version dependent fields.
78 * * SNMPsec, SNMPv2p, and SNMPv2* messages have a common form,
79 * * which is a tagged ASN.1 context specific sequence containing
80 * * message dependent fields.
82 * * In the #defines for the message versions below, the value
83 * * for SNMPv1, SNMPv2c, SNMPv2u, and SNMPv3 messages is the
84 * * value of the message version field. Since SNMPsec, SNMPv2p,
85 * * and SNMPv2* messages do not have a message version field,
86 * * the value in the defines for them is choosen to be a large
89 * * Note that many of the version ID's are defined below purely for
90 * * documentational purposes. At this point the only protocol planned
91 * * for future implementations is SNMP3, as the other v2 protocols will
92 * * not be supported by the IETF (ie, v2u, v2sec, v2star) or used by
93 * * the snmp community at large (at the time of this writing).
97 * versions based on version field
99 #define SNMP_VERSION_1 0
100 #define SNMP_VERSION_2c 1
101 #define SNMP_VERSION_2u 2 /* not (will never be) supported by this code */
102 #define SNMP_VERSION_3 3
105 * versions not based on a version field
107 #define SNMP_VERSION_sec 128 /* not (will never be) supported by this code */
108 #define SNMP_VERSION_2p 129
109 #define SNMP_VERSION_2star 130 /* not (will never be) supported by this code */
112 * PDU types in SNMPv1, SNMPsec, SNMPv2p, SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3
114 #define SNMP_MSG_GET (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x0)
115 #define SNMP_MSG_GETNEXT (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x1)
116 #define SNMP_MSG_RESPONSE (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x2)
117 #define SNMP_MSG_SET (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x3)
120 * PDU types in SNMPv1 and SNMPsec
122 #define SNMP_MSG_TRAP (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x4) /* c4 = 196 */
125 * PDU types in SNMPv2p, SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3
127 #define SNMP_MSG_GETBULK (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x5) /* c5 = 197 */
128 #define SNMP_MSG_INFORM (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x6) /* c6 = 198 */
129 #define SNMP_MSG_TRAP2 (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x7) /* c7 = 199 */
132 * PDU types in SNMPv2u, SNMPv2*, and SNMPv3
134 #define SNMP_MSG_REPORT (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x8) /* c8 = 200 */
137 * internal modes that should never be used by the protocol for the
140 #define SNMP_MSG_INTERNAL_SET_BEGIN -1
141 #define SNMP_MSG_INTERNAL_SET_RESERVE1 0 /* these should match snmp.h */
142 #define SNMP_MSG_INTERNAL_SET_RESERVE2 1
143 #define SNMP_MSG_INTERNAL_SET_ACTION 2
144 #define SNMP_MSG_INTERNAL_SET_COMMIT 3
145 #define SNMP_MSG_INTERNAL_SET_FREE 4
146 #define SNMP_MSG_INTERNAL_SET_UNDO 5
149 * test for member of Confirmed Class i.e., reportable
151 #define SNMP_CMD_CONFIRMED(c) (c == SNMP_MSG_INFORM || c == SNMP_MSG_GETBULK ||\
152 c == SNMP_MSG_GETNEXT || c == SNMP_MSG_GET || \
156 * Exception values for SNMPv2p, SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3
158 #define SNMP_NOSUCHOBJECT (ASN_CONTEXT | ASN_PRIMITIVE | 0x0) /* 80 = 128 */
159 #define SNMP_NOSUCHINSTANCE (ASN_CONTEXT | ASN_PRIMITIVE | 0x1) /* 81 = 129 */
160 #define SNMP_ENDOFMIBVIEW (ASN_CONTEXT | ASN_PRIMITIVE | 0x2) /* 82 = 130 */
163 * Error codes (the value of the field error-status in PDUs)
167 * in SNMPv1, SNMPsec, SNMPv2p, SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3 PDUs
169 #define SNMP_ERR_NOERROR (0) /* XXX Used only for PDUs? */
170 #define SNMP_ERR_TOOBIG (1)
171 #define SNMP_ERR_NOSUCHNAME (2)
172 #define SNMP_ERR_BADVALUE (3)
173 #define SNMP_ERR_READONLY (4)
174 #define SNMP_ERR_GENERR (5)
177 * in SNMPv2p, SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3 PDUs
179 #define SNMP_ERR_NOACCESS (6)
180 #define SNMP_ERR_WRONGTYPE (7)
181 #define SNMP_ERR_WRONGLENGTH (8)
182 #define SNMP_ERR_WRONGENCODING (9)
183 #define SNMP_ERR_WRONGVALUE (10)
184 #define SNMP_ERR_NOCREATION (11)
185 #define SNMP_ERR_INCONSISTENTVALUE (12)
186 #define SNMP_ERR_RESOURCEUNAVAILABLE (13)
187 #define SNMP_ERR_COMMITFAILED (14)
188 #define SNMP_ERR_UNDOFAILED (15)
189 #define SNMP_ERR_AUTHORIZATIONERROR (16)
190 #define SNMP_ERR_NOTWRITABLE (17)
193 * in SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3 PDUs
195 #define SNMP_ERR_INCONSISTENTNAME (18)
197 #define MAX_SNMP_ERR 18
201 * values of the generic-trap field in trap PDUs
203 #define SNMP_TRAP_COLDSTART (0)
204 #define SNMP_TRAP_WARMSTART (1)
205 #define SNMP_TRAP_LINKDOWN (2)
206 #define SNMP_TRAP_LINKUP (3)
207 #define SNMP_TRAP_AUTHFAIL (4)
208 #define SNMP_TRAP_EGPNEIGHBORLOSS (5)
209 #define SNMP_TRAP_ENTERPRISESPECIFIC (6)
214 #define SNMP_ROW_NONEXISTENT 0
215 #define SNMP_ROW_ACTIVE 1
216 #define SNMP_ROW_NOTINSERVICE 2
217 #define SNMP_ROW_NOTREADY 3
218 #define SNMP_ROW_CREATEANDGO 4
219 #define SNMP_ROW_CREATEANDWAIT 5
220 #define SNMP_ROW_DESTROY 6
225 #define SNMP_STORAGE_NONE 0
226 #define SNMP_STORAGE_OTHER 1
227 #define SNMP_STORAGE_VOLATILE 2
228 #define SNMP_STORAGE_NONVOLATILE 3
229 #define SNMP_STORAGE_PERMANENT 4
230 #define SNMP_STORAGE_READONLY 5
233 * message processing models
235 #define SNMP_MP_MODEL_SNMPv1 0
236 #define SNMP_MP_MODEL_SNMPv2c 1
237 #define SNMP_MP_MODEL_SNMPv2u 2
238 #define SNMP_MP_MODEL_SNMPv3 3
239 #define SNMP_MP_MODEL_SNMPv2p 256
244 #define SNMP_SEC_MODEL_ANY 0
245 #define SNMP_SEC_MODEL_SNMPv1 1
246 #define SNMP_SEC_MODEL_SNMPv2c 2
247 #define SNMP_SEC_MODEL_USM 3
248 #define SNMP_SEC_MODEL_SNMPv2p 256
250 #define SNMP_SEC_LEVEL_NOAUTH 1
251 #define SNMP_SEC_LEVEL_AUTHNOPRIV 2
252 #define SNMP_SEC_LEVEL_AUTHPRIV 3
254 #define SNMP_MSG_FLAG_AUTH_BIT 0x01
255 #define SNMP_MSG_FLAG_PRIV_BIT 0x02
256 #define SNMP_MSG_FLAG_RPRT_BIT 0x04
259 * control PDU handling characteristics
261 #define UCD_MSG_FLAG_RESPONSE_PDU 0x100
262 #define UCD_MSG_FLAG_EXPECT_RESPONSE 0x200
263 #define UCD_MSG_FLAG_FORCE_PDU_COPY 0x400
264 #define UCD_MSG_FLAG_ALWAYS_IN_VIEW 0x800
265 #define UCD_MSG_FLAG_PDU_TIMEOUT 0x1000
266 #define UCD_MSG_FLAG_ONE_PASS_ONLY 0x2000
271 #define SNMP_VIEW_INCLUDED 1
272 #define SNMP_VIEW_EXCLUDED 2
277 #define SNMP_OID_INTERNET 1, 3, 6, 1
278 #define SNMP_OID_ENTERPRISES SNMP_OID_INTERNET, 4, 1
279 #define SNMP_OID_MIB2 SNMP_OID_INTERNET, 2, 1
280 #define SNMP_OID_SNMPV2 SNMP_OID_INTERNET, 6
281 #define SNMP_OID_SNMPMODULES SNMP_OID_SNMPV2, 3
284 * lengths as defined by TCs
286 #define SNMPADMINLENGTH 255
289 char *uptime_string(u_long, char *);
290 void xdump(const u_char *, size_t, const char *);
291 u_char *snmp_parse_var_op(u_char *, oid *, size_t *, u_char *,
292 size_t *, u_char **, size_t *);
293 u_char *snmp_build_var_op(u_char *, oid *, size_t *, u_char,
294 size_t, u_char *, size_t *);
297 #ifdef USE_REVERSE_ASNENCODING
298 int snmp_realloc_rbuild_var_op(u_char ** pkt,
306 size_t value_length);