1 /* Do not modify this file. */
2 /* It is created automatically by the ASN.1 to Wireshark dissector compiler */
4 /* ../../tools/asn2wrs.py -b -p snmp -c ./snmp.cnf -s ./packet-snmp-template -D . snmp.asn */
6 /* Input file: packet-snmp-template.c */
8 #line 1 "packet-snmp-template.c"
10 * Routines for SNMP (simple network management protocol)
11 * Copyright (C) 1998 Didier Jorand
13 * See RFC 1157 for SNMPv1.
15 * See RFCs 1901, 1905, and 1906 for SNMPv2c.
17 * See RFCs 1905, 1906, 1909, and 1910 for SNMPv2u [historic].
19 * See RFCs 2570-2576 for SNMPv3
20 * Updated to use the asn2wrs compiler made by Tomas Kukosa
21 * Copyright (C) 2005 - 2006 Anders Broman [AT] ericsson.com
23 * See RFC 3414 for User-based Security Model for SNMPv3
24 * See RFC 3826 for (AES) Cipher Algorithm in the SNMP USM
25 * See RFC 2578 for Structure of Management Information Version 2 (SMIv2)
26 * Copyright (C) 2007 Luis E. Garcia Ontanon <luis.ontanon@gmail.com>
30 * Wireshark - Network traffic analyzer
31 * By Gerald Combs <gerald@wireshark.org>
32 * Copyright 1998 Gerald Combs
36 * GXSNMP -- An snmp mangament application
37 * Copyright (C) 1998 Gregory McLean & Jochen Friedrich
38 * Beholder RMON ethernet network monitor,Copyright (C) 1993 DNPAP group
40 * This program is free software; you can redistribute it and/or
41 * modify it under the terms of the GNU General Public License
42 * as published by the Free Software Foundation; either version 2
43 * of the License, or (at your option) any later version.
45 * This program is distributed in the hope that it will be useful,
46 * but WITHOUT ANY WARRANTY; without even the implied warranty of
47 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
48 * GNU General Public License for more details.
50 * You should have received a copy of the GNU General Public License
51 * along with this program; if not, write to the Free Software
52 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
55 #define D(args) do {printf args; fflush(stdout); } while(0)
67 #include <epan/packet.h>
68 #include <epan/strutil.h>
69 #include <epan/conversation.h>
71 #include <epan/prefs.h>
72 #include <epan/sminmpec.h>
73 #include <epan/emem.h>
74 #include <epan/next_tvb.h>
76 #include <epan/asn1.h>
77 #include "packet-ipx.h"
78 #include "packet-hpext.h"
81 #include "packet-ber.h"
83 #include "packet-snmp.h"
85 #include <epan/crypt/crypt-sha1.h>
86 #include <epan/crypt/crypt-md5.h>
87 #include <epan/expert.h>
88 #include <epan/report_err.h>
89 #include <epan/oids.h>
94 #include <winposixtype.h>
99 /* Take a pointer that may be null and return a pointer that's not null
100 by turning null pointers into pointers to the above null string,
101 and, if the argument pointer wasn't null, make sure we handle
102 non-printable characters in the string by escaping them. */
103 #define SAFE_STRING(s, l) (((s) != NULL) ? format_text((s), (l)) : "")
105 #define PNAME "Simple Network Management Protocol"
106 #define PSNAME "SNMP"
107 #define PFNAME "snmp"
109 #define UDP_PORT_SNMP 161
110 #define UDP_PORT_SNMP_TRAP 162
111 #define TCP_PORT_SNMP 161
112 #define TCP_PORT_SNMP_TRAP 162
113 #define TCP_PORT_SMUX 199
114 #define UDP_PORT_SNMP_PATROL 8161
116 /* Initialize the protocol and registered fields */
117 static int proto_snmp = -1;
118 static int proto_smux = -1;
120 static gboolean display_oid = TRUE;
121 static gboolean snmp_var_in_tree = TRUE;
123 static gboolean snmp_usm_auth_md5(snmp_usm_params_t* p, guint8**, guint*, gchar const**);
124 static gboolean snmp_usm_auth_sha1(snmp_usm_params_t* p, guint8**, guint*, gchar const**);
126 static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t*, tvbuff_t*, gchar const**);
127 static tvbuff_t* snmp_usm_priv_aes(snmp_usm_params_t*, tvbuff_t*, gchar const**);
130 static void snmp_usm_password_to_key_md5(const guint8 *password, guint passwordlen, const guint8 *engineID, guint engineLength, guint8 *key);
131 static void snmp_usm_password_to_key_sha1(const guint8 *password, guint passwordlen, const guint8 *engineID, guint engineLength, guint8 *key);
134 static snmp_usm_auth_model_t model_md5 = {snmp_usm_password_to_key_md5, snmp_usm_auth_md5, 16};
135 static snmp_usm_auth_model_t model_sha1 = {snmp_usm_password_to_key_sha1, snmp_usm_auth_sha1, 20};
137 static value_string auth_types[] = {
142 static snmp_usm_auth_model_t* auth_models[] = {&model_md5,&model_sha1};
145 static value_string priv_types[] = {
150 static snmp_usm_decoder_t priv_protos[] = {snmp_usm_priv_des, snmp_usm_priv_aes};
152 static snmp_ue_assoc_t* ueas = NULL;
153 static guint num_ueas = 0;
154 static uat_t* assocs_uat = NULL;
155 static snmp_ue_assoc_t* localized_ues = NULL;
156 static snmp_ue_assoc_t* unlocalized_ues = NULL;
161 static snmp_usm_params_t usm_p = {FALSE,FALSE,0,0,0,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,FALSE};
164 #define TH_CRYPT 0x02
165 #define TH_REPORT 0x04
167 /* desegmentation of SNMP-over-TCP */
168 static gboolean snmp_desegment = TRUE;
170 /* Global variables */
172 guint32 MsgSecurityModel;
173 tvbuff_t *oid_tvb=NULL;
174 tvbuff_t *value_tvb=NULL;
176 static dissector_handle_t snmp_handle;
177 static dissector_handle_t data_handle;
179 static next_tvb_list_t var_list;
181 static int hf_snmp_v3_flags_auth = -1;
182 static int hf_snmp_v3_flags_crypt = -1;
183 static int hf_snmp_v3_flags_report = -1;
185 static int hf_snmp_engineid_conform = -1;
186 static int hf_snmp_engineid_enterprise = -1;
187 static int hf_snmp_engineid_format = -1;
188 static int hf_snmp_engineid_ipv4 = -1;
189 static int hf_snmp_engineid_ipv6 = -1;
190 static int hf_snmp_engineid_mac = -1;
191 static int hf_snmp_engineid_text = -1;
192 static int hf_snmp_engineid_time = -1;
193 static int hf_snmp_engineid_data = -1;
194 static int hf_snmp_decryptedPDU = -1;
195 static int hf_snmp_msgAuthentication = -1;
197 static int hf_snmp_noSuchObject = -1;
198 static int hf_snmp_noSuchInstance = -1;
199 static int hf_snmp_endOfMibView = -1;
200 static int hf_snmp_unSpecified = -1;
202 static int hf_snmp_integer32_value = -1;
203 static int hf_snmp_octetstring_value = -1;
204 static int hf_snmp_oid_value = -1;
205 static int hf_snmp_null_value = -1;
206 static int hf_snmp_ipv4_value = -1;
207 static int hf_snmp_ipv6_value = -1;
208 static int hf_snmp_anyaddress_value = -1;
209 static int hf_snmp_unsigned32_value = -1;
210 static int hf_snmp_unknown_value = -1;
211 static int hf_snmp_opaque_value = -1;
212 static int hf_snmp_nsap_value = -1;
213 static int hf_snmp_counter_value = -1;
214 static int hf_snmp_timeticks_value = -1;
215 static int hf_snmp_big_counter_value = -1;
216 static int hf_snmp_gauge32_value = -1;
218 static int hf_snmp_objectname = -1;
219 static int hf_snmp_scalar_instance_index = -1;
223 /*--- Included file: packet-snmp-hf.c ---*/
224 #line 1 "packet-snmp-hf.c"
225 static int hf_snmp_SMUX_PDUs_PDU = -1; /* SMUX_PDUs */
226 static int hf_snmp_version = -1; /* Version */
227 static int hf_snmp_community = -1; /* OCTET_STRING */
228 static int hf_snmp_data = -1; /* PDUs */
229 static int hf_snmp_parameters = -1; /* OCTET_STRING */
230 static int hf_snmp_datav2u = -1; /* T_datav2u */
231 static int hf_snmp_v2u_plaintext = -1; /* PDUs */
232 static int hf_snmp_encrypted = -1; /* OCTET_STRING */
233 static int hf_snmp_msgAuthoritativeEngineID = -1; /* T_msgAuthoritativeEngineID */
234 static int hf_snmp_msgAuthoritativeEngineBoots = -1; /* T_msgAuthoritativeEngineBoots */
235 static int hf_snmp_msgAuthoritativeEngineTime = -1; /* T_msgAuthoritativeEngineTime */
236 static int hf_snmp_msgUserName = -1; /* T_msgUserName */
237 static int hf_snmp_msgAuthenticationParameters = -1; /* T_msgAuthenticationParameters */
238 static int hf_snmp_msgPrivacyParameters = -1; /* T_msgPrivacyParameters */
239 static int hf_snmp_msgVersion = -1; /* Version */
240 static int hf_snmp_msgGlobalData = -1; /* HeaderData */
241 static int hf_snmp_msgSecurityParameters = -1; /* T_msgSecurityParameters */
242 static int hf_snmp_msgData = -1; /* ScopedPduData */
243 static int hf_snmp_msgID = -1; /* INTEGER_0_2147483647 */
244 static int hf_snmp_msgMaxSize = -1; /* INTEGER_484_2147483647 */
245 static int hf_snmp_msgFlags = -1; /* T_msgFlags */
246 static int hf_snmp_msgSecurityModel = -1; /* T_msgSecurityModel */
247 static int hf_snmp_plaintext = -1; /* ScopedPDU */
248 static int hf_snmp_encryptedPDU = -1; /* T_encryptedPDU */
249 static int hf_snmp_contextEngineID = -1; /* SnmpEngineID */
250 static int hf_snmp_contextName = -1; /* OCTET_STRING */
251 static int hf_snmp_get_request = -1; /* GetRequest_PDU */
252 static int hf_snmp_get_next_request = -1; /* GetNextRequest_PDU */
253 static int hf_snmp_get_response = -1; /* GetResponse_PDU */
254 static int hf_snmp_set_request = -1; /* SetRequest_PDU */
255 static int hf_snmp_trap = -1; /* Trap_PDU */
256 static int hf_snmp_getBulkRequest = -1; /* GetBulkRequest_PDU */
257 static int hf_snmp_informRequest = -1; /* InformRequest_PDU */
258 static int hf_snmp_sNMPv2_Trap = -1; /* SNMPv2_Trap_PDU */
259 static int hf_snmp_report = -1; /* Report_PDU */
260 static int hf_snmp_request_id = -1; /* INTEGER */
261 static int hf_snmp_error_status = -1; /* T_error_status */
262 static int hf_snmp_error_index = -1; /* INTEGER */
263 static int hf_snmp_variable_bindings = -1; /* VarBindList */
264 static int hf_snmp_bulkPDU_request_id = -1; /* Integer32 */
265 static int hf_snmp_non_repeaters = -1; /* INTEGER_0_2147483647 */
266 static int hf_snmp_max_repetitions = -1; /* INTEGER_0_2147483647 */
267 static int hf_snmp_enterprise = -1; /* EnterpriseOID */
268 static int hf_snmp_agent_addr = -1; /* NetworkAddress */
269 static int hf_snmp_generic_trap = -1; /* T_generic_trap */
270 static int hf_snmp_specific_trap = -1; /* INTEGER */
271 static int hf_snmp_time_stamp = -1; /* TimeTicks */
272 static int hf_snmp_name = -1; /* ObjectName */
273 static int hf_snmp_valueType = -1; /* NULL */
274 static int hf_snmp_VarBindList_item = -1; /* VarBind */
275 static int hf_snmp_open = -1; /* OpenPDU */
276 static int hf_snmp_close = -1; /* ClosePDU */
277 static int hf_snmp_registerRequest = -1; /* RReqPDU */
278 static int hf_snmp_registerResponse = -1; /* RegisterResponse */
279 static int hf_snmp_commitOrRollback = -1; /* SOutPDU */
280 static int hf_snmp_rRspPDU = -1; /* RRspPDU */
281 static int hf_snmp_pDUs = -1; /* PDUs */
282 static int hf_snmp_smux_simple = -1; /* SimpleOpen */
283 static int hf_snmp_smux_version = -1; /* T_smux_version */
284 static int hf_snmp_identity = -1; /* OBJECT_IDENTIFIER */
285 static int hf_snmp_description = -1; /* DisplayString */
286 static int hf_snmp_password = -1; /* OCTET_STRING */
287 static int hf_snmp_subtree = -1; /* ObjectName */
288 static int hf_snmp_priority = -1; /* INTEGER_M1_2147483647 */
289 static int hf_snmp_operation = -1; /* T_operation */
291 /*--- End of included file: packet-snmp-hf.c ---*/
292 #line 215 "packet-snmp-template.c"
294 static int hf_smux_version = -1;
295 static int hf_smux_pdutype = -1;
297 /* Initialize the subtree pointers */
298 static gint ett_smux = -1;
299 static gint ett_snmp = -1;
300 static gint ett_engineid = -1;
301 static gint ett_msgFlags = -1;
302 static gint ett_encryptedPDU = -1;
303 static gint ett_decrypted = -1;
304 static gint ett_authParameters = -1;
305 static gint ett_internet = -1;
306 static gint ett_varbind = -1;
307 static gint ett_name = -1;
308 static gint ett_value = -1;
309 static gint ett_decoding_error = -1;
312 /*--- Included file: packet-snmp-ett.c ---*/
313 #line 1 "packet-snmp-ett.c"
314 static gint ett_snmp_Message = -1;
315 static gint ett_snmp_Messagev2u = -1;
316 static gint ett_snmp_T_datav2u = -1;
317 static gint ett_snmp_UsmSecurityParameters = -1;
318 static gint ett_snmp_SNMPv3Message = -1;
319 static gint ett_snmp_HeaderData = -1;
320 static gint ett_snmp_ScopedPduData = -1;
321 static gint ett_snmp_ScopedPDU = -1;
322 static gint ett_snmp_PDUs = -1;
323 static gint ett_snmp_PDU = -1;
324 static gint ett_snmp_BulkPDU = -1;
325 static gint ett_snmp_Trap_PDU_U = -1;
326 static gint ett_snmp_VarBind = -1;
327 static gint ett_snmp_VarBindList = -1;
328 static gint ett_snmp_SMUX_PDUs = -1;
329 static gint ett_snmp_RegisterResponse = -1;
330 static gint ett_snmp_OpenPDU = -1;
331 static gint ett_snmp_SimpleOpen_U = -1;
332 static gint ett_snmp_RReqPDU_U = -1;
334 /*--- End of included file: packet-snmp-ett.c ---*/
335 #line 234 "packet-snmp-template.c"
337 static const true_false_string auth_flags = {
342 /* Security Models */
344 #define SNMP_SEC_ANY 0
345 #define SNMP_SEC_V1 1
346 #define SNMP_SEC_V2C 2
347 #define SNMP_SEC_USM 3
349 static const value_string sec_models[] = {
350 { SNMP_SEC_ANY, "Any" },
351 { SNMP_SEC_V1, "V1" },
352 { SNMP_SEC_V2C, "V2C" },
353 { SNMP_SEC_USM, "USM" },
358 #define SMUX_MSG_OPEN 0
359 #define SMUX_MSG_CLOSE 1
360 #define SMUX_MSG_RREQ 2
361 #define SMUX_MSG_RRSP 3
362 #define SMUX_MSG_SOUT 4
364 static const value_string smux_types[] = {
365 { SMUX_MSG_OPEN, "Open" },
366 { SMUX_MSG_CLOSE, "Close" },
367 { SMUX_MSG_RREQ, "Registration Request" },
368 { SMUX_MSG_RRSP, "Registration Response" },
369 { SMUX_MSG_SOUT, "Commit Or Rollback" },
374 #define SNMP_IPA 0 /* IP Address */
375 #define SNMP_CNT 1 /* Counter (Counter32) */
376 #define SNMP_GGE 2 /* Gauge (Gauge32) */
377 #define SNMP_TIT 3 /* TimeTicks */
378 #define SNMP_OPQ 4 /* Opaque */
379 #define SNMP_NSP 5 /* NsapAddress */
380 #define SNMP_C64 6 /* Counter64 */
381 #define SNMP_U32 7 /* Uinteger32 */
388 dissector_table_t value_sub_dissectors_table;
391 * dissect_snmp_VarBind
392 * this routine dissects variable bindings, looking for the oid information in our oid reporsitory
393 * to format and add the value adequatelly.
395 * The choice to handwrite this code instead of using the asn compiler is to avoid having tons
396 * of uses of global variables distributed in very different parts of the code.
397 * Other than that there's a cosmetic thing: the tree from ASN generated code would be so
398 * convoluted due to the nesting of CHOICEs in the definition of VarBind/value.
400 * XXX: the length of this function (~400 lines) is an aberration!
401 * oid_key_t:key_type could become a series of callbacks instead of an enum
402 * the (! oid_info_is_ok) switch could be made into an array (would be slower)
405 NetworkAddress ::= CHOICE { internet IpAddress }
406 IpAddress ::= [APPLICATION 0] IMPLICIT OCTET STRING (SIZE (4))
407 TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
408 Integer32 ::= INTEGER (-2147483648..2147483647)
409 ObjectName ::= OBJECT IDENTIFIER
410 Counter32 ::= [APPLICATION 1] IMPLICIT INTEGER (0..4294967295)
411 Gauge32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
412 Unsigned32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
413 Integer-value ::= INTEGER (-2147483648..2147483647)
414 Integer32 ::= INTEGER (-2147483648..2147483647)
415 ObjectID-value ::= OBJECT IDENTIFIER
417 TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
418 Opaque ::= [APPLICATION 4] IMPLICIT OCTET STRING
419 Counter64 ::= [APPLICATION 6] IMPLICIT INTEGER (0..18446744073709551615)
421 ObjectSyntax ::= CHOICE {
423 application-wide ApplicationSyntax
426 SimpleSyntax ::= CHOICE {
427 integer-value Integer-value,
428 string-value String-value,
429 objectID-value ObjectID-value,
433 ApplicationSyntax ::= CHOICE {
434 ipAddress-value IpAddress,
435 counter-value Counter32,
436 timeticks-value TimeTicks,
437 arbitrary-value Opaque,
438 big-counter-value Counter64,
439 unsigned-integer-value Unsigned32
442 ValueType ::= CHOICE {
445 noSuchObject[0] IMPLICIT NULL,
446 noSuchInstance[1] IMPLICIT NULL,
447 endOfMibView[2] IMPLICIT NULL
450 VarBind ::= SEQUENCE {
457 extern int dissect_snmp_VarBind(gboolean implicit_tag _U_,
463 int seq_offset, name_offset, value_offset, value_start;
464 guint32 seq_len, name_len, value_len;
471 oid_info_t* oid_info = NULL;
472 guint oid_matched, oid_left;
473 proto_item *pi_name, *pi_varbind, *pi_value = NULL;
474 proto_tree *pt, *pt_varbind, *pt_name, *pt_value;
475 char label[ITEM_LABEL_LENGTH];
477 const char* info_oid = NULL;
480 int min_len = 0, max_len = 0;
481 gboolean oid_info_is_ok;
482 const char* oid_string = NULL;
483 enum {BER_NO_ERROR, BER_WRONG_LENGTH, BER_WRONG_TAG} format_error = BER_NO_ERROR;
487 /* first have the VarBind's sequence header */
488 offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
489 offset = get_ber_length(tvb, offset, &seq_len, &ind);
491 seq_len += offset - seq_offset;
493 if (!pc && ber_class==BER_CLASS_UNI && tag==BER_UNI_TAG_SEQUENCE) {
494 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"VarBind must be an universal class sequence");
495 pt = proto_item_add_subtree(pi,ett_decoding_error);
496 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "VarBind is not an universal class sequence");
497 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
501 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"Indicator must be clear in VarBind");
502 pt = proto_item_add_subtree(pi,ett_decoding_error);
503 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "VarBind has indicator set");
504 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
507 /* then we have the ObjectName's header */
509 offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
510 name_offset = offset = get_ber_length(tvb, offset, &name_len, &ind);
512 if (! ( !pc && ber_class==BER_CLASS_UNI && tag==BER_UNI_TAG_OID) ) {
513 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"ObjectName must be an OID in primitive encoding");
514 pt = proto_item_add_subtree(pi,ett_decoding_error);
515 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "ObjectName not an OID");
516 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
520 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"Indicator must be clear in ObjectName");
521 pt = proto_item_add_subtree(pi,ett_decoding_error);
522 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "ObjectName has indicator set");
523 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
527 value_start = offset;
529 /* then we have the value's header */
530 offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
531 value_offset = offset = get_ber_length(tvb, offset, &value_len, &ind);
534 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"the value must be in primitive encoding");
535 pt = proto_item_add_subtree(pi,ett_decoding_error);
536 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "value not in primitive encoding");
537 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
540 /* Now, we know where everithing is */
544 /* we add the varbind tree root with a dummy label we'll fill later on */
545 pi_varbind = proto_tree_add_text(tree,tvb,seq_offset,seq_len,"VarBind");
546 pt_varbind = proto_item_add_subtree(pi_varbind,ett_varbind);
549 pi_name = proto_tree_add_item(pt_varbind,hf_snmp_objectname,tvb,name_offset,name_len,FALSE);
550 pt_name = proto_item_add_subtree(pi_name,ett_name);
552 /* fetch ObjectName and its relative oid_info */
553 oid_bytes = ep_tvb_memdup(tvb, name_offset, name_len);
554 oid_info = oid_get_from_encoded(oid_bytes, name_len, &subids, &oid_matched, &oid_left);
556 add_oid_debug_subtree(oid_info,pt_name);
558 if (subids && oid_matched+oid_left) {
559 oid_string = oid_subid2string(subids,oid_matched+oid_left);
562 if (ber_class == BER_CLASS_CON) {
563 /* if we have an error value just add it and get out the way ASAP */
567 if (value_len != 0) {
568 min_len = max_len = 0;
569 format_error = BER_WRONG_LENGTH;
574 hfid = hf_snmp_noSuchObject;
575 note = "noSuchObject";
578 hfid = hf_snmp_noSuchInstance;
579 note = "noSuchInstance";
582 hfid = hf_snmp_endOfMibView;
583 note = "endOfMibView";
586 pi = proto_tree_add_text(pt_varbind,tvb,0,0,"Wrong tag for Error Value: expected 0, 1, or 2 but got: %d",tag);
587 pt = proto_item_add_subtree(pi,ett_decoding_error);
588 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong tag for SNMP VarBind error value");
589 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
593 pi = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,FALSE);
594 expert_add_info_format(actx->pinfo, pi, PI_RESPONSE_CODE, PI_NOTE, "%s",note);
595 g_strlcpy (label, note, ITEM_LABEL_LENGTH);
599 /* now we'll try to figure out which are the indexing sub-oids and whether the oid we know about is the one oid we have to use */
600 switch (oid_info->kind) {
601 case OID_KIND_SCALAR:
603 /* OK: we got the instance sub-id */
604 proto_tree_add_uint64(pt_name,hf_snmp_scalar_instance_index,tvb,name_offset,name_len,subids[oid_matched]);
605 oid_info_is_ok = TRUE;
607 } else if (oid_left == 0) {
608 if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
609 /* unSpecified does not require an instance sub-id add the new value and get off the way! */
610 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
613 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"A scalar should have one instance sub-id this one has none");
614 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "No instance sub-id in scalar value");
615 oid_info_is_ok = FALSE;
619 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"A scalar should have only one instance sub-id this has: %d",oid_left);
620 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong number of instance sub-ids in scalar value");
621 oid_info_is_ok = FALSE;
625 case OID_KIND_COLUMN:
626 if ( oid_info->parent->kind == OID_KIND_ROW) {
627 oid_key_t* k = oid_info->parent->key;
628 guint key_start = oid_matched;
629 guint key_len = oid_left;
630 oid_info_is_ok = TRUE;
632 if ( key_len == 0 && ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
633 /* unSpecified does not require an instance sub-id add the new value and get off the way! */
634 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
639 for (;k;k = k->next) {
642 if (key_start >= oid_matched+oid_left) {
643 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index sub-oid shorter than expected");
644 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid shorter than expected");
645 oid_info_is_ok = FALSE;
649 switch(k->key_type) {
650 case OID_KEY_TYPE_WRONG: {
651 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"OID instaces not handled, if you want this implemented please contact the wireshark developpers");
652 expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
653 oid_info_is_ok = FALSE;
656 case OID_KEY_TYPE_INTEGER: {
657 if (IS_FT_INT(k->ft_type)) {
658 proto_tree_add_int(pt_name,k->hfid,tvb,name_offset,name_len,(guint)subids[key_start]);
659 } else { /* if it's not an unsigned int let proto_tree_add_uint throw a warning */
660 proto_tree_add_uint(pt_name,k->hfid,tvb,name_offset,name_len,(guint)subids[key_start]);
664 continue; /* k->next */
666 case OID_KEY_TYPE_IMPLIED_OID:
667 suboid_len = key_len;
671 case OID_KEY_TYPE_OID: {
673 guint suboid_buf_len;
676 suboid_len = subids[key_start++];
680 suboid = &(subids[key_start]);
682 if( suboid_len == 0 ) {
683 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"an index sub-oid OID cannot be 0 bytes long!");
684 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid OID with len=0");
685 oid_info_is_ok = FALSE;
689 if( key_len < suboid_len ) {
690 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index sub-oid should not be longer than remaining oid size");
691 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid longer than remaining oid size");
692 oid_info_is_ok = FALSE;
696 suboid_buf_len = oid_subid2encoded(suboid_len, suboid, &suboid_buf);
698 DISSECTOR_ASSERT(suboid_buf_len);
700 proto_tree_add_oid(pt_name,k->hfid,tvb,name_offset, suboid_buf_len, suboid_buf);
702 key_start += suboid_len;
703 key_len -= suboid_len + 1;
704 continue; /* k->next */
713 switch (k->key_type) {
714 case OID_KEY_TYPE_IPADDR:
715 suboid = &(subids[key_start]);
718 case OID_KEY_TYPE_IMPLIED_STRING:
719 case OID_KEY_TYPE_IMPLIED_BYTES:
720 suboid = &(subids[key_start]);
724 buf_len = k->num_subids;
725 suboid = &(subids[key_start]);
735 if( key_len < buf_len ) {
736 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index string should not be longer than remaining oid size");
737 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index string longer than remaining oid size");
738 oid_info_is_ok = FALSE;
742 buf = ep_alloc(buf_len+1);
743 for (i = 0; i < buf_len; i++)
744 buf[i] = (guint8)suboid[i];
747 switch(k->key_type) {
748 case OID_KEY_TYPE_STRING:
749 case OID_KEY_TYPE_IMPLIED_STRING:
750 proto_tree_add_string(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
752 case OID_KEY_TYPE_BYTES:
753 case OID_KEY_TYPE_NSAP:
754 case OID_KEY_TYPE_IMPLIED_BYTES:
755 proto_tree_add_bytes(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
757 case OID_KEY_TYPE_IPADDR: {
758 guint32* ipv4_p = (void*)buf;
759 proto_tree_add_ipv4(pt_name,k->hfid,tvb,name_offset,buf_len, *ipv4_p);
762 DISSECTOR_ASSERT_NOT_REACHED();
767 key_start += buf_len;
769 continue; /* k->next*/
775 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"We do not know how to handle this OID, if you want this implemented please contact the wireshark developers");
776 expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
777 oid_info_is_ok = FALSE;
781 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"The COLUMS's parent is not a ROW. This is a BUG! please contact the wireshark developers.");
782 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_ERROR, "COLUMS's parent is not a ROW");
783 oid_info_is_ok = FALSE;
787 /* proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"This kind OID should have no value");
788 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "This kind OID should have no value"); */
789 oid_info_is_ok = FALSE;
795 if (oid_info_is_ok) {
796 if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
797 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
799 if ((oid_info->value_type->ber_class != BER_CLASS_ANY) &&
800 (ber_class != oid_info->value_type->ber_class))
801 format_error = BER_WRONG_TAG;
803 if ((oid_info->value_type->ber_tag != BER_TAG_ANY) &&
804 (tag != oid_info->value_type->ber_tag))
805 format_error = BER_WRONG_TAG;
807 max_len = oid_info->value_type->max_len == -1 ? 0xffffff : oid_info->value_type->max_len;
808 min_len = oid_info->value_type->min_len;
810 if ((int)value_len < min_len || (int)value_len > max_len)
811 format_error = BER_WRONG_LENGTH;
813 pi_value = proto_tree_add_item(pt_varbind,oid_info->value_hfid,tvb,value_offset,value_len,FALSE);
816 switch(ber_class|(tag<<4)) {
817 case BER_CLASS_UNI|(BER_UNI_TAG_INTEGER<<4):
818 max_len = 4; min_len = 1;
819 if (value_len > (guint)max_len && value_len < (guint)min_len) format_error = BER_WRONG_LENGTH;
820 hfid = hf_snmp_integer32_value;
822 case BER_CLASS_UNI|(BER_UNI_TAG_OCTETSTRING<<4):
823 hfid = hf_snmp_octetstring_value;
825 case BER_CLASS_UNI|(BER_UNI_TAG_OID<<4):
826 max_len = -1; min_len = 1;
827 if (value_len < (guint)min_len) format_error = BER_WRONG_LENGTH;
828 hfid = hf_snmp_oid_value;
830 case BER_CLASS_UNI|(BER_UNI_TAG_NULL<<4):
831 max_len = 0; min_len = 0;
832 if (value_len != 0) format_error = BER_WRONG_LENGTH;
833 hfid = hf_snmp_null_value;
835 case BER_CLASS_APP: /* | (SNMP_IPA<<4)*/
837 case 4: hfid = hf_snmp_ipv4_value; break;
838 case 16: hfid = hf_snmp_ipv6_value; break;
839 default: hfid = hf_snmp_anyaddress_value; break;
842 case BER_CLASS_APP|(SNMP_U32<<4):
843 hfid = hf_snmp_unsigned32_value;
845 case BER_CLASS_APP|(SNMP_GGE<<4):
846 hfid = hf_snmp_gauge32_value;
848 case BER_CLASS_APP|(SNMP_CNT<<4):
849 hfid = hf_snmp_counter_value;
851 case BER_CLASS_APP|(SNMP_TIT<<4):
852 hfid = hf_snmp_timeticks_value;
854 case BER_CLASS_APP|(SNMP_OPQ<<4):
855 hfid = hf_snmp_opaque_value;
857 case BER_CLASS_APP|(SNMP_NSP<<4):
858 hfid = hf_snmp_nsap_value;
860 case BER_CLASS_APP|(SNMP_C64<<4):
861 hfid = hf_snmp_big_counter_value;
864 hfid = hf_snmp_unknown_value;
868 pi_value = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,FALSE);
869 expert_add_info_format(actx->pinfo, pi_value, PI_UNDECODED, PI_NOTE, "Unresolved value, Missing MIB");
870 oid_info_is_ok = FALSE;
873 pt_value = proto_item_add_subtree(pi_value,ett_value);
875 if (value_len > 0 && oid_string) {
876 tvbuff_t* sub_tvb = tvb_new_subset(tvb, value_offset, value_len, value_len);
878 next_tvb_add_string(&var_list, sub_tvb, (snmp_var_in_tree) ? pt_value : NULL, value_sub_dissectors_table, oid_string);
883 if (pi_value) proto_item_fill_label(pi_value->finfo, label);
885 if (oid_info && oid_info->name) {
887 repr = ep_strdup_printf("%s.%s (%s)",
889 oid_subid2string(&(subids[oid_matched]),oid_left),
890 oid_subid2string(subids,oid_matched+oid_left));
891 info_oid = ep_strdup_printf("%s.%s", oid_info->name,
892 oid_subid2string(&(subids[oid_matched]),oid_left));
894 repr = ep_strdup_printf("%s (%s)",
896 oid_subid2string(subids,oid_matched));
897 info_oid = oid_info->name;
899 } else if (oid_string) {
900 repr = ep_strdup(oid_string);
901 info_oid = oid_string;
903 repr = ep_strdup("[Bad OID]");
906 valstr = strstr(label,": ");
907 valstr = valstr ? valstr+2 : label;
909 proto_item_set_text(pi_varbind,"%s: %s",repr,valstr);
911 if (display_oid && info_oid && check_col(actx->pinfo->cinfo, COL_INFO)) {
912 col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", info_oid);
915 switch (format_error) {
916 case BER_WRONG_LENGTH: {
917 proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
918 proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong value length: %u expecting: %u <= len <= %u",
921 max_len == -1 ? 0xFFFFFF : max_len);
922 pt = proto_item_add_subtree(pi,ett_decoding_error);
923 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong length for SNMP VarBind/value");
924 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
926 case BER_WRONG_TAG: {
927 proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
928 proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong class/tag for Value expected: %d,%d got: %d,%d",
929 oid_info->value_type->ber_class,
930 oid_info->value_type->ber_tag,
933 pt = proto_item_add_subtree(pi,ett_decoding_error);
934 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong class/tag for SNMP VarBind/value");
935 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
941 return seq_offset + seq_len;
945 #define F_SNMP_ENGINEID_CONFORM 0x80
946 #define SNMP_ENGINEID_RFC1910 0x00
947 #define SNMP_ENGINEID_RFC3411 0x01
949 static const true_false_string tfs_snmp_engineid_conform = {
951 "RFC1910 (Non-SNMPv3)"
954 #define SNMP_ENGINEID_FORMAT_IPV4 0x01
955 #define SNMP_ENGINEID_FORMAT_IPV6 0x02
956 #define SNMP_ENGINEID_FORMAT_MACADDRESS 0x03
957 #define SNMP_ENGINEID_FORMAT_TEXT 0x04
958 #define SNMP_ENGINEID_FORMAT_OCTETS 0x05
960 static const value_string snmp_engineid_format_vals[] = {
961 { SNMP_ENGINEID_FORMAT_IPV4, "IPv4 address" },
962 { SNMP_ENGINEID_FORMAT_IPV6, "IPv6 address" },
963 { SNMP_ENGINEID_FORMAT_MACADDRESS, "MAC address" },
964 { SNMP_ENGINEID_FORMAT_TEXT, "Text, administratively assigned" },
965 { SNMP_ENGINEID_FORMAT_OCTETS, "Octets, administratively assigned" },
970 * SNMP Engine ID dissection according to RFC 3411 (SnmpEngineID TC)
971 * or historic RFC 1910 (AgentID)
973 int dissect_snmp_engineid(proto_tree *tree, tvbuff_t *tvb, int offset, int len) {
974 proto_item *item = NULL;
975 guint8 conformance, format;
976 guint32 enterpriseid, seconds;
978 int len_remain = len;
980 /* first bit: engine id conformance */
981 if (len_remain<4) return offset;
982 conformance = ((tvb_get_guint8(tvb, offset)>>7) && 0x01);
983 proto_tree_add_item(tree, hf_snmp_engineid_conform, tvb, offset, 1, FALSE);
985 /* 4-byte enterprise number/name */
986 if (len_remain<4) return offset;
987 enterpriseid = tvb_get_ntohl(tvb, offset);
989 enterpriseid -= 0x80000000; /* ignore first bit */
990 proto_tree_add_uint(tree, hf_snmp_engineid_enterprise, tvb, offset, 4, enterpriseid);
994 switch(conformance) {
996 case SNMP_ENGINEID_RFC1910:
997 /* 12-byte AgentID w/ 8-byte trailer */
999 proto_tree_add_text(tree, tvb, offset, 8, "AgentID Trailer: 0x%s",
1000 tvb_bytes_to_str(tvb, offset, 8));
1004 proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC1910>");
1009 case SNMP_ENGINEID_RFC3411: /* variable length: 5..32 */
1011 /* 1-byte format specifier */
1012 if (len_remain<1) return offset;
1013 format = tvb_get_guint8(tvb, offset);
1014 item = proto_tree_add_uint_format(tree, hf_snmp_engineid_format, tvb, offset, 1, format, "Engine ID Format: %s (%d)",
1015 val_to_str(format, snmp_engineid_format_vals, "Reserved/Enterprise-specific"), format);
1020 case SNMP_ENGINEID_FORMAT_IPV4:
1021 /* 4-byte IPv4 address */
1022 if (len_remain==4) {
1023 proto_tree_add_item(tree, hf_snmp_engineid_ipv4, tvb, offset, 4, FALSE);
1028 case SNMP_ENGINEID_FORMAT_IPV6:
1029 /* 16-byte IPv6 address */
1030 if (len_remain==16) {
1031 proto_tree_add_item(tree, hf_snmp_engineid_ipv6, tvb, offset, 16, FALSE);
1036 case SNMP_ENGINEID_FORMAT_MACADDRESS:
1037 /* 6-byte MAC address */
1038 if (len_remain==6) {
1039 proto_tree_add_item(tree, hf_snmp_engineid_mac, tvb, offset, 6, FALSE);
1044 case SNMP_ENGINEID_FORMAT_TEXT:
1045 /* max. 27-byte string, administratively assigned */
1046 if (len_remain<=27) {
1047 proto_tree_add_item(tree, hf_snmp_engineid_text, tvb, offset, len_remain, FALSE);
1053 /* most common enterprise-specific format: (ucd|net)-snmp random */
1054 if ((enterpriseid==2021)||(enterpriseid==8072)) {
1055 proto_item_append_text(item, (enterpriseid==2021) ? ": UCD-SNMP Random" : ": Net-SNMP Random");
1056 /* demystify: 4B random, 4B epoch seconds */
1057 if (len_remain==8) {
1058 proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, 4, FALSE);
1059 seconds = tvb_get_letohl(tvb, offset+4);
1061 proto_tree_add_time_format(tree, hf_snmp_engineid_time, tvb, offset+4, 4,
1062 &ts, "Engine ID Data: Creation Time: %s",
1063 abs_time_secs_to_str(seconds));
1069 case SNMP_ENGINEID_FORMAT_OCTETS:
1071 /* max. 27 bytes, administratively assigned or unknown format */
1072 if (len_remain<=27) {
1073 proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, len_remain, FALSE);
1082 proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC3411>");
1089 static void set_ue_keys(snmp_ue_assoc_t* n ) {
1090 guint key_size = n->user.authModel->key_size;
1092 n->user.authKey.data = se_alloc(key_size);
1093 n->user.authKey.len = key_size;
1094 n->user.authModel->pass2key(n->user.authPassword.data,
1095 n->user.authPassword.len,
1098 n->user.authKey.data);
1100 n->user.privKey.data = se_alloc(key_size);
1101 n->user.privKey.len = key_size;
1102 n->user.authModel->pass2key(n->user.privPassword.data,
1103 n->user.privPassword.len,
1106 n->user.privKey.data);
1109 static snmp_ue_assoc_t* ue_se_dup(snmp_ue_assoc_t* o) {
1110 snmp_ue_assoc_t* d = se_memdup(o,sizeof(snmp_ue_assoc_t));
1112 d->user.authModel = o->user.authModel;
1114 d->user.privProtocol = o->user.privProtocol;
1116 d->user.userName.data = se_memdup(o->user.userName.data,o->user.userName.len);
1117 d->user.userName.len = o->user.userName.len;
1119 d->user.authPassword.data = o->user.authPassword.data ? se_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
1120 d->user.authPassword.len = o->user.authPassword.len;
1122 d->user.privPassword.data = o->user.privPassword.data ? se_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
1123 d->user.privPassword.len = o->user.privPassword.len;
1125 d->engine.len = o->engine.len;
1127 if (d->engine.len) {
1128 d->engine.data = se_memdup(o->engine.data,o->engine.len);
1137 #define CACHE_INSERT(c,a) if (c) { snmp_ue_assoc_t* t = c; c = a; c->next = t; } else { c = a; a->next = NULL; }
1139 static void renew_ue_cache(void) {
1143 localized_ues = NULL;
1144 unlocalized_ues = NULL;
1146 for(i = 0; i < num_ueas; i++) {
1147 snmp_ue_assoc_t* a = ue_se_dup(&(ueas[i]));
1149 if (a->engine.len) {
1150 CACHE_INSERT(localized_ues,a);
1153 CACHE_INSERT(unlocalized_ues,a);
1158 localized_ues = NULL;
1159 unlocalized_ues = NULL;
1164 static snmp_ue_assoc_t* localize_ue( snmp_ue_assoc_t* o, const guint8* engine, guint engine_len ) {
1165 snmp_ue_assoc_t* n = se_memdup(o,sizeof(snmp_ue_assoc_t));
1167 n->engine.data = se_memdup(engine,engine_len);
1168 n->engine.len = engine_len;
1176 #define localized_match(a,u,ul,e,el) \
1177 ( a->user.userName.len == ul \
1178 && a->engine.len == el \
1179 && memcmp( a->user.userName.data, u, (a->user.userName.len < ul) ? a->user.userName.len : ul ) == 0 \
1180 && memcmp( a->engine.data, e, (a->engine.len < el) ? a->engine.len : el ) == 0 )
1182 #define unlocalized_match(a,u,l) \
1183 ( a->user.userName.len == l && memcmp( a->user.userName.data, u, a->user.userName.len < l ? a->user.userName.len : l) == 0 )
1185 static snmp_ue_assoc_t* get_user_assoc(tvbuff_t* engine_tvb, tvbuff_t* user_tvb) {
1186 static snmp_ue_assoc_t* a;
1187 guint given_username_len;
1188 guint8* given_username;
1189 guint given_engine_len;
1190 guint8* given_engine;
1192 if ( ! (localized_ues || unlocalized_ues ) ) return NULL;
1194 if (! ( user_tvb && engine_tvb ) ) return NULL;
1196 given_username_len = tvb_length_remaining(user_tvb,0);
1197 given_username = ep_tvb_memdup(user_tvb,0,-1);
1198 given_engine_len = tvb_length_remaining(engine_tvb,0);
1199 given_engine = ep_tvb_memdup(engine_tvb,0,-1);
1201 for (a = localized_ues; a; a = a->next) {
1202 if ( localized_match(a, given_username, given_username_len, given_engine, given_engine_len) ) {
1207 for (a = unlocalized_ues; a; a = a->next) {
1208 if ( unlocalized_match(a, given_username, given_username_len) ) {
1209 snmp_ue_assoc_t* n = localize_ue( a, given_engine, given_engine_len );
1210 CACHE_INSERT(localized_ues,n);
1218 static gboolean snmp_usm_auth_md5(snmp_usm_params_t* p, guint8** calc_auth_p, guint* calc_auth_len_p, gchar const** error) {
1225 guint8 calc_auth[16];
1231 *error = "No Authenticator";
1235 key = p->user_assoc->user.authKey.data;
1236 key_len = p->user_assoc->user.authKey.len;
1239 *error = "User has no authKey";
1244 auth_len = tvb_length_remaining(p->auth_tvb,0);
1246 if (auth_len != 12) {
1247 *error = "Authenticator length wrong";
1251 msg_len = tvb_length_remaining(p->msg_tvb,0);
1252 msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
1255 auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
1257 start = p->auth_offset - p->start_offset;
1258 end = start + auth_len;
1260 /* fill the authenticator with zeros */
1261 for ( i = start ; i < end ; i++ ) {
1265 md5_hmac(msg, msg_len, key, key_len, calc_auth);
1267 if (calc_auth_p) *calc_auth_p = calc_auth;
1268 if (calc_auth_len_p) *calc_auth_len_p = 12;
1270 return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
1274 static gboolean snmp_usm_auth_sha1(snmp_usm_params_t* p _U_, guint8** calc_auth_p, guint* calc_auth_len_p, gchar const** error _U_) {
1281 guint8 calc_auth[20];
1287 *error = "No Authenticator";
1291 key = p->user_assoc->user.authKey.data;
1292 key_len = p->user_assoc->user.authKey.len;
1295 *error = "User has no authKey";
1300 auth_len = tvb_length_remaining(p->auth_tvb,0);
1303 if (auth_len != 12) {
1304 *error = "Authenticator length wrong";
1308 msg_len = tvb_length_remaining(p->msg_tvb,0);
1309 msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
1311 auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
1313 start = p->auth_offset - p->start_offset;
1314 end = start + auth_len;
1316 /* fill the authenticator with zeros */
1317 for ( i = start ; i < end ; i++ ) {
1321 sha1_hmac(key, key_len, msg, msg_len, calc_auth);
1323 if (calc_auth_p) *calc_auth_p = calc_auth;
1324 if (calc_auth_len_p) *calc_auth_len_p = 12;
1326 return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
1329 static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData _U_, gchar const** error _U_) {
1330 #ifdef HAVE_LIBGCRYPT
1332 gcry_cipher_hd_t hd = NULL;
1335 guint8* des_key = p->user_assoc->user.privKey.data; /* first 8 bytes */
1336 guint8* pre_iv = &(p->user_assoc->user.privKey.data[8]); /* last 8 bytes */
1341 tvbuff_t* clear_tvb;
1346 salt_len = tvb_length_remaining(p->priv_tvb,0);
1348 if (salt_len != 8) {
1349 *error = "decryptionError: msgPrivacyParameters length != 8";
1353 salt = ep_tvb_memdup(p->priv_tvb,0,salt_len);
1356 The resulting "salt" is XOR-ed with the pre-IV to obtain the IV.
1358 for (i=0; i<8; i++) {
1359 iv[i] = pre_iv[i] ^ salt[i];
1362 cryptgrm_len = tvb_length_remaining(encryptedData,0);
1364 if (cryptgrm_len % 8) {
1365 *error = "decryptionError: the length of the encrypted data is not a mutiple of 8 octets";
1369 cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
1371 cleartext = ep_alloc(cryptgrm_len);
1373 err = gcry_cipher_open(&hd, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_CBC, 0);
1374 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1376 err = gcry_cipher_setiv(hd, iv, 8);
1377 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1379 err = gcry_cipher_setkey(hd,des_key,8);
1380 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1382 err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1383 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1385 gcry_cipher_close(hd);
1387 clear_tvb = tvb_new_real_data(cleartext, cryptgrm_len, cryptgrm_len);
1392 *error = (void*)gpg_strerror(err);
1393 if (hd) gcry_cipher_close(hd);
1396 *error = "libgcrypt not present, cannot decrypt";
1401 static tvbuff_t* snmp_usm_priv_aes(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData _U_, gchar const** error _U_) {
1402 #ifdef HAVE_LIBGCRYPT
1404 gcry_cipher_hd_t hd = NULL;
1407 guint8* aes_key = p->user_assoc->user.privKey.data; /* first 16 bytes */
1412 tvbuff_t* clear_tvb;
1414 priv_len = tvb_length_remaining(p->priv_tvb,0);
1416 if (priv_len != 8) {
1417 *error = "decryptionError: msgPrivacyParameters length != 8";
1421 iv[0] = (p->boots & 0xff000000) >> 24;
1422 iv[1] = (p->boots & 0x00ff0000) >> 16;
1423 iv[2] = (p->boots & 0x0000ff00) >> 8;
1424 iv[3] = (p->boots & 0x000000ff);
1425 iv[4] = (p->time & 0xff000000) >> 24;
1426 iv[5] = (p->time & 0x00ff0000) >> 16;
1427 iv[6] = (p->time & 0x0000ff00) >> 8;
1428 iv[7] = (p->time & 0x000000ff);
1429 tvb_memcpy(p->priv_tvb,&(iv[8]),0,8);
1431 cryptgrm_len = tvb_length_remaining(encryptedData,0);
1432 cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
1434 cleartext = ep_alloc(cryptgrm_len);
1436 err = gcry_cipher_open(&hd, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_CFB, 0);
1437 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1439 err = gcry_cipher_setiv(hd, iv, 16);
1440 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1442 err = gcry_cipher_setkey(hd,aes_key,16);
1443 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1445 err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1446 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1448 gcry_cipher_close(hd);
1450 clear_tvb = tvb_new_real_data(cleartext, cryptgrm_len, cryptgrm_len);
1455 *error = (void*)gpg_strerror(err);
1456 if (hd) gcry_cipher_close(hd);
1459 *error = "libgcrypt not present, cannot decrypt";
1465 gboolean check_ScopedPdu(tvbuff_t* tvb) {
1470 int hoffset, eoffset;
1473 offset = get_ber_identifier(tvb, 0, &class, &pc, &tag);
1474 offset = get_ber_length(tvb, offset, NULL, NULL);
1476 if ( ! (((class!=BER_CLASS_APP) && (class!=BER_CLASS_PRI) )
1477 && ( (!pc) || (class!=BER_CLASS_UNI) || (tag!=BER_UNI_TAG_ENUMERATED) )
1480 if((tvb_get_guint8(tvb, offset)==0)&&(tvb_get_guint8(tvb, offset+1)==0))
1485 offset = get_ber_identifier(tvb, offset, &class, &pc, &tag);
1486 offset = get_ber_length(tvb, offset, &len, NULL);
1487 eoffset = offset + len;
1489 if (eoffset <= hoffset) return FALSE;
1491 if ((class!=BER_CLASS_APP)&&(class!=BER_CLASS_PRI))
1492 if( (class!=BER_CLASS_UNI)
1493 ||((tag<BER_UNI_TAG_NumericString)&&(tag!=BER_UNI_TAG_OCTETSTRING)&&(tag!=BER_UNI_TAG_UTF8String)) )
1501 /*--- Included file: packet-snmp-fn.c ---*/
1502 #line 1 "packet-snmp-fn.c"
1507 dissect_snmp_EnterpriseOID(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1509 tvbuff_t* param_tvb = NULL;
1513 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, ¶m_tvb);
1515 if (display_oid && param_tvb) {
1516 len = tvb_length_remaining (param_tvb, 0);
1517 name = oid_resolved_from_encoded(tvb_get_ptr(param_tvb, 0, len), len);
1518 if (name && check_col(actx->pinfo->cinfo, COL_INFO)) {
1519 col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", name);
1531 dissect_snmp_OCTET_STRING_SIZE_4(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1532 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1541 dissect_snmp_NetworkAddress(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1542 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1543 hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_OCTET_STRING_SIZE_4);
1551 dissect_snmp_INTEGER_0_4294967295(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1552 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1561 dissect_snmp_TimeTicks(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1562 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1563 hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_INTEGER_0_4294967295);
1571 dissect_snmp_Integer32(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1572 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1581 dissect_snmp_ObjectName(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1582 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
1588 static const value_string snmp_Version_vals[] = {
1598 dissect_snmp_Version(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1599 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1608 dissect_snmp_OCTET_STRING(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1609 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1618 dissect_snmp_INTEGER(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1619 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1626 static const value_string snmp_T_error_status_vals[] = {
1629 { 2, "noSuchName" },
1635 { 8, "wrongLength" },
1636 { 9, "wrongEncoding" },
1637 { 10, "wrongValue" },
1638 { 11, "noCreation" },
1639 { 12, "inconsistentValue" },
1640 { 13, "resourceUnavailable" },
1641 { 14, "commitFailed" },
1642 { 15, "undoFailed" },
1643 { 16, "authorizationError" },
1644 { 17, "notWritable" },
1645 { 18, "inconsistentName" },
1651 dissect_snmp_T_error_status(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1652 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1661 dissect_snmp_NULL(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1662 offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
1669 static const ber_sequence_t VarBindList_sequence_of[1] = {
1670 { &hf_snmp_VarBindList_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBind },
1674 dissect_snmp_VarBindList(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1675 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
1676 VarBindList_sequence_of, hf_index, ett_snmp_VarBindList);
1682 static const ber_sequence_t PDU_sequence[] = {
1683 { &hf_snmp_request_id , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1684 { &hf_snmp_error_status , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_error_status },
1685 { &hf_snmp_error_index , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1686 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1687 { NULL, 0, 0, 0, NULL }
1691 dissect_snmp_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1692 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1693 PDU_sequence, hf_index, ett_snmp_PDU);
1701 dissect_snmp_GetRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1702 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1703 hf_index, BER_CLASS_CON, 0, TRUE, dissect_snmp_PDU);
1711 dissect_snmp_GetNextRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1712 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1713 hf_index, BER_CLASS_CON, 1, TRUE, dissect_snmp_PDU);
1721 dissect_snmp_GetResponse_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1722 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1723 hf_index, BER_CLASS_CON, 2, TRUE, dissect_snmp_PDU);
1731 dissect_snmp_SetRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1732 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1733 hf_index, BER_CLASS_CON, 3, TRUE, dissect_snmp_PDU);
1739 static const value_string snmp_T_generic_trap_vals[] = {
1744 { 4, "authenticationFailure" },
1745 { 5, "egpNeighborLoss" },
1746 { 6, "enterpriseSpecific" },
1752 dissect_snmp_T_generic_trap(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1753 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1760 static const ber_sequence_t Trap_PDU_U_sequence[] = {
1761 { &hf_snmp_enterprise , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_EnterpriseOID },
1762 { &hf_snmp_agent_addr , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_NetworkAddress },
1763 { &hf_snmp_generic_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_generic_trap },
1764 { &hf_snmp_specific_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1765 { &hf_snmp_time_stamp , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_TimeTicks },
1766 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1767 { NULL, 0, 0, 0, NULL }
1771 dissect_snmp_Trap_PDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1772 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1773 Trap_PDU_U_sequence, hf_index, ett_snmp_Trap_PDU_U);
1781 dissect_snmp_Trap_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1782 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1783 hf_index, BER_CLASS_CON, 4, TRUE, dissect_snmp_Trap_PDU_U);
1791 dissect_snmp_INTEGER_0_2147483647(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1792 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1799 static const ber_sequence_t BulkPDU_sequence[] = {
1800 { &hf_snmp_bulkPDU_request_id, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Integer32 },
1801 { &hf_snmp_non_repeaters , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
1802 { &hf_snmp_max_repetitions, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
1803 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1804 { NULL, 0, 0, 0, NULL }
1808 dissect_snmp_BulkPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1809 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1810 BulkPDU_sequence, hf_index, ett_snmp_BulkPDU);
1818 dissect_snmp_GetBulkRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1819 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1820 hf_index, BER_CLASS_CON, 5, TRUE, dissect_snmp_BulkPDU);
1828 dissect_snmp_InformRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1829 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1830 hf_index, BER_CLASS_CON, 6, TRUE, dissect_snmp_PDU);
1838 dissect_snmp_SNMPv2_Trap_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1839 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1840 hf_index, BER_CLASS_CON, 7, TRUE, dissect_snmp_PDU);
1848 dissect_snmp_Report_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1849 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1850 hf_index, BER_CLASS_CON, 8, TRUE, dissect_snmp_PDU);
1856 static const value_string snmp_PDUs_vals[] = {
1857 { 0, "get-request" },
1858 { 1, "get-next-request" },
1859 { 2, "get-response" },
1860 { 3, "set-request" },
1862 { 5, "getBulkRequest" },
1863 { 6, "informRequest" },
1864 { 7, "sNMPv2-Trap" },
1869 static const ber_choice_t PDUs_choice[] = {
1870 { 0, &hf_snmp_get_request , BER_CLASS_CON, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_GetRequest_PDU },
1871 { 1, &hf_snmp_get_next_request, BER_CLASS_CON, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_GetNextRequest_PDU },
1872 { 2, &hf_snmp_get_response , BER_CLASS_CON, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_GetResponse_PDU },
1873 { 3, &hf_snmp_set_request , BER_CLASS_CON, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_SetRequest_PDU },
1874 { 4, &hf_snmp_trap , BER_CLASS_CON, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_Trap_PDU },
1875 { 5, &hf_snmp_getBulkRequest , BER_CLASS_CON, 5, BER_FLAGS_NOOWNTAG, dissect_snmp_GetBulkRequest_PDU },
1876 { 6, &hf_snmp_informRequest , BER_CLASS_CON, 6, BER_FLAGS_NOOWNTAG, dissect_snmp_InformRequest_PDU },
1877 { 7, &hf_snmp_sNMPv2_Trap , BER_CLASS_CON, 7, BER_FLAGS_NOOWNTAG, dissect_snmp_SNMPv2_Trap_PDU },
1878 { 8, &hf_snmp_report , BER_CLASS_CON, 8, BER_FLAGS_NOOWNTAG, dissect_snmp_Report_PDU },
1879 { 0, NULL, 0, 0, 0, NULL }
1883 dissect_snmp_PDUs(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1887 if (check_col(actx->pinfo->cinfo, COL_INFO))
1888 col_clear(actx->pinfo->cinfo, COL_INFO);
1890 offset = dissect_ber_choice(actx, tree, tvb, offset,
1891 PDUs_choice, hf_index, ett_snmp_PDUs,
1894 if( (pdu_type!=-1) && snmp_PDUs_vals[pdu_type].strptr ){
1895 if (check_col(actx->pinfo->cinfo, COL_INFO))
1896 col_prepend_fstr(actx->pinfo->cinfo, COL_INFO, "%s", snmp_PDUs_vals[pdu_type].strptr);
1905 static const ber_sequence_t Message_sequence[] = {
1906 { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
1907 { &hf_snmp_community , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
1908 { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
1909 { NULL, 0, 0, 0, NULL }
1913 dissect_snmp_Message(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1914 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1915 Message_sequence, hf_index, ett_snmp_Message);
1921 static const value_string snmp_T_datav2u_vals[] = {
1927 static const ber_choice_t T_datav2u_choice[] = {
1928 { 0, &hf_snmp_v2u_plaintext , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
1929 { 1, &hf_snmp_encrypted , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
1930 { 0, NULL, 0, 0, 0, NULL }
1934 dissect_snmp_T_datav2u(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1935 offset = dissect_ber_choice(actx, tree, tvb, offset,
1936 T_datav2u_choice, hf_index, ett_snmp_T_datav2u,
1943 static const ber_sequence_t Messagev2u_sequence[] = {
1944 { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
1945 { &hf_snmp_parameters , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
1946 { &hf_snmp_datav2u , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_T_datav2u },
1947 { NULL, 0, 0, 0, NULL }
1951 dissect_snmp_Messagev2u(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1952 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1953 Messagev2u_sequence, hf_index, ett_snmp_Messagev2u);
1961 dissect_snmp_SnmpEngineID(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1963 tvbuff_t* param_tvb = NULL;
1965 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1968 proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
1969 dissect_snmp_engineid(engine_tree, param_tvb, 0, tvb_length_remaining(param_tvb,0));
1980 dissect_snmp_T_msgAuthoritativeEngineID(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1983 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1985 if (usm_p.engine_tvb) {
1986 proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
1987 dissect_snmp_engineid(engine_tree, usm_p.engine_tvb, 0, tvb_length_remaining(usm_p.engine_tvb,0));
1998 dissect_snmp_T_msgAuthoritativeEngineBoots(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1999 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2008 dissect_snmp_T_msgAuthoritativeEngineTime(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2009 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2018 dissect_snmp_T_msgUserName(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2019 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2028 dissect_snmp_T_msgAuthenticationParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2030 offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_index, &usm_p.auth_tvb);
2031 if (usm_p.auth_tvb) {
2032 usm_p.auth_item = actx->created_item;
2033 usm_p.auth_offset = offset_from_real_beginning(usm_p.auth_tvb,0);
2043 dissect_snmp_T_msgPrivacyParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2044 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2051 static const ber_sequence_t UsmSecurityParameters_sequence[] = {
2052 { &hf_snmp_msgAuthoritativeEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineID },
2053 { &hf_snmp_msgAuthoritativeEngineBoots, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineBoots },
2054 { &hf_snmp_msgAuthoritativeEngineTime, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineTime },
2055 { &hf_snmp_msgUserName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgUserName },
2056 { &hf_snmp_msgAuthenticationParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthenticationParameters },
2057 { &hf_snmp_msgPrivacyParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgPrivacyParameters },
2058 { NULL, 0, 0, 0, NULL }
2062 dissect_snmp_UsmSecurityParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2063 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2064 UsmSecurityParameters_sequence, hf_index, ett_snmp_UsmSecurityParameters);
2072 dissect_snmp_INTEGER_484_2147483647(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2073 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2082 dissect_snmp_T_msgFlags(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2083 #line 213 "snmp.cnf"
2084 tvbuff_t *parameter_tvb = NULL;
2086 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2090 guint8 v3_flags = tvb_get_guint8(parameter_tvb, 0);
2091 proto_tree* flags_tree = proto_item_add_subtree(actx->created_item,ett_msgFlags);
2093 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_report, parameter_tvb, 0, 1, FALSE);
2094 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_crypt, parameter_tvb, 0, 1, FALSE);
2095 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_auth, parameter_tvb, 0, 1, FALSE);
2097 usm_p.encrypted = v3_flags & TH_CRYPT ? TRUE : FALSE;
2098 usm_p.authenticated = v3_flags & TH_AUTH ? TRUE : FALSE;
2110 dissect_snmp_T_msgSecurityModel(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2111 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2118 static const ber_sequence_t HeaderData_sequence[] = {
2119 { &hf_snmp_msgID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
2120 { &hf_snmp_msgMaxSize , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_484_2147483647 },
2121 { &hf_snmp_msgFlags , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgFlags },
2122 { &hf_snmp_msgSecurityModel, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityModel },
2123 { NULL, 0, 0, 0, NULL }
2127 dissect_snmp_HeaderData(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2128 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2129 HeaderData_sequence, hf_index, ett_snmp_HeaderData);
2137 dissect_snmp_T_msgSecurityParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2138 #line 156 "snmp.cnf"
2140 switch(MsgSecurityModel){
2141 case SNMP_SEC_USM: /* 3 */
2142 offset = dissect_snmp_UsmSecurityParameters(FALSE, tvb, offset+2, actx, tree, -1);
2143 usm_p.user_assoc = get_user_assoc(usm_p.engine_tvb, usm_p.user_tvb);
2145 case SNMP_SEC_ANY: /* 0 */
2146 case SNMP_SEC_V1: /* 1 */
2147 case SNMP_SEC_V2C: /* 2 */
2149 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2161 static const ber_sequence_t ScopedPDU_sequence[] = {
2162 { &hf_snmp_contextEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_SnmpEngineID },
2163 { &hf_snmp_contextName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2164 { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
2165 { NULL, 0, 0, 0, NULL }
2169 dissect_snmp_ScopedPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2170 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2171 ScopedPDU_sequence, hf_index, ett_snmp_ScopedPDU);
2179 dissect_snmp_T_encryptedPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2180 #line 103 "snmp.cnf"
2181 tvbuff_t* crypt_tvb;
2182 offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_snmp_encryptedPDU, &crypt_tvb);
2184 if( usm_p.encrypted && crypt_tvb
2186 && usm_p.user_assoc->user.privProtocol ) {
2188 const gchar* error = NULL;
2189 proto_tree* encryptedpdu_tree = proto_item_add_subtree(actx->created_item,ett_encryptedPDU);
2190 tvbuff_t* cleartext_tvb = usm_p.user_assoc->user.privProtocol(&usm_p, crypt_tvb, &error );
2192 if (! cleartext_tvb) {
2193 proto_item* cause = proto_tree_add_text(encryptedpdu_tree, crypt_tvb, 0, -1,
2194 "Failed to decrypt encryptedPDU: %s", error);
2196 expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
2197 "Failed to decrypt encryptedPDU: %s", error);
2199 if (check_col(actx->pinfo->cinfo, COL_INFO))
2200 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Failed to decrypt");
2204 proto_item* decrypted_item;
2205 proto_tree* decrypted_tree;
2207 if (! check_ScopedPdu(cleartext_tvb)) {
2208 proto_item* cause = proto_tree_add_text(encryptedpdu_tree, cleartext_tvb, 0, -1,
2209 "Decrypted data not formated as expected, wrong key?");
2211 expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
2212 "Decrypted data not formated as expected");
2214 if (check_col(actx->pinfo->cinfo, COL_INFO))
2215 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Decrypted data not formated as expected");
2221 add_new_data_source(actx->pinfo, cleartext_tvb, "Decrypted ScopedPDU");
2222 tvb_set_child_real_data_tvbuff(tvb, cleartext_tvb);
2224 decrypted_item = proto_tree_add_item(encryptedpdu_tree, hf_snmp_decryptedPDU,cleartext_tvb,0,-1,FALSE);
2225 decrypted_tree = proto_item_add_subtree(decrypted_item,ett_decrypted);
2226 dissect_snmp_ScopedPDU(FALSE, cleartext_tvb, 0, actx, decrypted_tree, -1);
2229 if (check_col(actx->pinfo->cinfo, COL_INFO))
2230 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: privKey Unknown");
2239 static const value_string snmp_ScopedPduData_vals[] = {
2241 { 1, "encryptedPDU" },
2245 static const ber_choice_t ScopedPduData_choice[] = {
2246 { 0, &hf_snmp_plaintext , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_ScopedPDU },
2247 { 1, &hf_snmp_encryptedPDU , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_encryptedPDU },
2248 { 0, NULL, 0, 0, 0, NULL }
2252 dissect_snmp_ScopedPduData(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2253 offset = dissect_ber_choice(actx, tree, tvb, offset,
2254 ScopedPduData_choice, hf_index, ett_snmp_ScopedPduData,
2261 static const ber_sequence_t SNMPv3Message_sequence[] = {
2262 { &hf_snmp_msgVersion , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
2263 { &hf_snmp_msgGlobalData , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_HeaderData },
2264 { &hf_snmp_msgSecurityParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityParameters },
2265 { &hf_snmp_msgData , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_ScopedPduData },
2266 { NULL, 0, 0, 0, NULL }
2270 dissect_snmp_SNMPv3Message(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2271 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2272 SNMPv3Message_sequence, hf_index, ett_snmp_SNMPv3Message);
2274 #line 171 "snmp.cnf"
2276 if( usm_p.authenticated
2278 && usm_p.user_assoc->user.authModel ) {
2279 const gchar* error = NULL;
2280 proto_item* authen_item;
2281 proto_tree* authen_tree = proto_item_add_subtree(usm_p.auth_item,ett_authParameters);
2283 guint calc_auth_len;
2285 usm_p.authOK = usm_p.user_assoc->user.authModel->authenticate( &usm_p, &calc_auth, &calc_auth_len, &error );
2288 authen_item = proto_tree_add_text(authen_tree,tvb,0,0,"Error while verifying Messsage authenticity: %s", error);
2289 PROTO_ITEM_SET_GENERATED(authen_item);
2290 expert_add_info_format( actx->pinfo, authen_item, PI_MALFORMED, PI_ERROR, "Error while verifying Messsage authenticity: %s", error );
2295 authen_item = proto_tree_add_boolean(authen_tree, hf_snmp_msgAuthentication, tvb, 0, 0, usm_p.authOK);
2296 PROTO_ITEM_SET_GENERATED(authen_item);
2299 fmt = "SNMP Authentication OK";
2302 gchar* calc_auth_str = bytestring_to_str(calc_auth,calc_auth_len,' ');
2303 proto_item_append_text(authen_item, " calcuated = %s", calc_auth_str);
2304 fmt = "SNMP Authentication Error";
2308 expert_add_info_format( actx->pinfo, authen_item, PI_CHECKSUM, severity, fmt );
2317 static const value_string snmp_T_smux_version_vals[] = {
2324 dissect_snmp_T_smux_version(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2325 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2334 dissect_snmp_OBJECT_IDENTIFIER(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2335 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
2343 dissect_snmp_DisplayString(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2344 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2351 static const ber_sequence_t SimpleOpen_U_sequence[] = {
2352 { &hf_snmp_smux_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_smux_version },
2353 { &hf_snmp_identity , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_OBJECT_IDENTIFIER },
2354 { &hf_snmp_description , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_DisplayString },
2355 { &hf_snmp_password , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2356 { NULL, 0, 0, 0, NULL }
2360 dissect_snmp_SimpleOpen_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2361 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2362 SimpleOpen_U_sequence, hf_index, ett_snmp_SimpleOpen_U);
2370 dissect_snmp_SimpleOpen(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2371 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2372 hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_SimpleOpen_U);
2378 static const value_string snmp_OpenPDU_vals[] = {
2379 { 0, "smux-simple" },
2383 static const ber_choice_t OpenPDU_choice[] = {
2384 { 0, &hf_snmp_smux_simple , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_SimpleOpen },
2385 { 0, NULL, 0, 0, 0, NULL }
2389 dissect_snmp_OpenPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2390 offset = dissect_ber_choice(actx, tree, tvb, offset,
2391 OpenPDU_choice, hf_index, ett_snmp_OpenPDU,
2398 static const value_string snmp_ClosePDU_U_vals[] = {
2400 { 1, "unsupportedVersion" },
2401 { 2, "packetFormat" },
2402 { 3, "protocolError" },
2403 { 4, "internalError" },
2404 { 5, "authenticationFailure" },
2410 dissect_snmp_ClosePDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2411 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2420 dissect_snmp_ClosePDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2421 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2422 hf_index, BER_CLASS_APP, 1, TRUE, dissect_snmp_ClosePDU_U);
2430 dissect_snmp_INTEGER_M1_2147483647(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2431 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2438 static const value_string snmp_T_operation_vals[] = {
2447 dissect_snmp_T_operation(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2448 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2455 static const ber_sequence_t RReqPDU_U_sequence[] = {
2456 { &hf_snmp_subtree , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_ObjectName },
2457 { &hf_snmp_priority , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_M1_2147483647 },
2458 { &hf_snmp_operation , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_operation },
2459 { NULL, 0, 0, 0, NULL }
2463 dissect_snmp_RReqPDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2464 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2465 RReqPDU_U_sequence, hf_index, ett_snmp_RReqPDU_U);
2473 dissect_snmp_RReqPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2474 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2475 hf_index, BER_CLASS_APP, 2, TRUE, dissect_snmp_RReqPDU_U);
2481 static const value_string snmp_RRspPDU_U_vals[] = {
2488 dissect_snmp_RRspPDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2489 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2498 dissect_snmp_RRspPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2499 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2500 hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_RRspPDU_U);
2506 static const value_string snmp_RegisterResponse_vals[] = {
2512 static const ber_choice_t RegisterResponse_choice[] = {
2513 { 0, &hf_snmp_rRspPDU , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_RRspPDU },
2514 { 1, &hf_snmp_pDUs , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
2515 { 0, NULL, 0, 0, 0, NULL }
2519 dissect_snmp_RegisterResponse(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2520 offset = dissect_ber_choice(actx, tree, tvb, offset,
2521 RegisterResponse_choice, hf_index, ett_snmp_RegisterResponse,
2528 static const value_string snmp_SOutPDU_U_vals[] = {
2536 dissect_snmp_SOutPDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2537 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2546 dissect_snmp_SOutPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2547 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2548 hf_index, BER_CLASS_APP, 4, TRUE, dissect_snmp_SOutPDU_U);
2554 static const value_string snmp_SMUX_PDUs_vals[] = {
2557 { 2, "registerRequest" },
2558 { 3, "registerResponse" },
2559 { 4, "commitOrRollback" },
2563 static const ber_choice_t SMUX_PDUs_choice[] = {
2564 { 0, &hf_snmp_open , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_OpenPDU },
2565 { 1, &hf_snmp_close , BER_CLASS_APP, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_ClosePDU },
2566 { 2, &hf_snmp_registerRequest, BER_CLASS_APP, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_RReqPDU },
2567 { 3, &hf_snmp_registerResponse, BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_RegisterResponse },
2568 { 4, &hf_snmp_commitOrRollback, BER_CLASS_APP, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_SOutPDU },
2569 { 0, NULL, 0, 0, 0, NULL }
2573 dissect_snmp_SMUX_PDUs(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
2574 offset = dissect_ber_choice(actx, tree, tvb, offset,
2575 SMUX_PDUs_choice, hf_index, ett_snmp_SMUX_PDUs,
2583 static void dissect_SMUX_PDUs_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
2584 asn1_ctx_t asn1_ctx;
2585 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
2586 dissect_snmp_SMUX_PDUs(FALSE, tvb, 0, &asn1_ctx, tree, hf_snmp_SMUX_PDUs_PDU);
2590 /*--- End of included file: packet-snmp-fn.c ---*/
2591 #line 1399 "packet-snmp-template.c"
2595 dissect_snmp_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
2596 proto_tree *tree, int proto, gint ett, gboolean is_tcp)
2599 guint length_remaining;
2601 gboolean pc, ind = 0;
2604 guint message_length;
2605 int start_offset = offset;
2606 guint32 version = 0;
2608 proto_tree *snmp_tree = NULL;
2609 proto_item *item = NULL;
2610 asn1_ctx_t asn1_ctx;
2611 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
2614 usm_p.msg_tvb = tvb;
2615 usm_p.start_offset = offset_from_real_beginning(tvb,0) ;
2616 usm_p.engine_tvb = NULL;
2617 usm_p.user_tvb = NULL;
2618 usm_p.auth_item = NULL;
2619 usm_p.auth_tvb = NULL;
2620 usm_p.auth_offset = 0;
2621 usm_p.priv_tvb = NULL;
2622 usm_p.user_assoc = NULL;
2623 usm_p.authenticated = FALSE;
2624 usm_p.encrypted = FALSE;
2627 usm_p.authOK = FALSE;
2630 * This will throw an exception if we don't have any data left.
2631 * That's what we want. (See "tcp_dissect_pdus()", which is
2632 * similar, but doesn't have to deal with ASN.1.
2633 * XXX - can we make "tcp_dissect_pdus()" provide enough
2634 * information to the "get_pdu_len" routine so that we could
2635 * have that routine deal with ASN.1, and just use
2636 * "tcp_dissect_pdus()"?)
2638 length_remaining = tvb_ensure_length_remaining(tvb, offset);
2640 /* NOTE: we have to parse the message piece by piece, since the
2641 * capture length may be less than the message length: a 'global'
2642 * parsing is likely to fail.
2646 * If this is SNMP-over-TCP, we might have to do reassembly
2647 * in order to read the "Sequence Of" header.
2649 if (is_tcp && snmp_desegment && pinfo->can_desegment) {
2651 * This is TCP, and we should, and can, do reassembly.
2653 * Is the "Sequence Of" header split across segment
2654 * boundaries? We requre at least 6 bytes for the
2655 * header, which allows for a 4-byte length (ASN.1
2658 if (length_remaining < 6) {
2659 pinfo->desegment_offset = offset;
2660 pinfo->desegment_len = 6 - length_remaining;
2663 * Return 0, which means "I didn't dissect anything
2664 * because I don't have enough data - we need
2672 * OK, try to read the "Sequence Of" header; this gets the total
2673 * length of the SNMP message.
2675 /* Set tree to 0 to not display internakl BER fields if option used.*/
2676 offset = dissect_ber_identifier(pinfo, 0, tvb, offset, &class, &pc, &tag);
2677 offset = dissect_ber_length(pinfo, 0, tvb, offset, &len, &ind);
2679 message_length = len + 2;
2680 offset = dissect_ber_integer(FALSE, &asn1_ctx, 0, tvb, offset, -1, &version);
2684 * If this is SNMP-over-TCP, we might have to do reassembly
2685 * to get all of this message.
2687 if (is_tcp && snmp_desegment && pinfo->can_desegment) {
2689 * Yes - is the message split across segment boundaries?
2691 if (length_remaining < message_length) {
2693 * Yes. Tell the TCP dissector where the data
2694 * for this message starts in the data it handed
2695 * us, and how many more bytes we need, and
2698 pinfo->desegment_offset = start_offset;
2699 pinfo->desegment_len =
2700 message_length - length_remaining;
2703 * Return 0, which means "I didn't dissect anything
2704 * because I don't have enough data - we need
2711 next_tvb_init(&var_list);
2713 if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
2714 col_set_str(pinfo->cinfo, COL_PROTOCOL,
2715 proto_get_protocol_short_name(find_protocol_by_id(proto)));
2719 item = proto_tree_add_item(tree, proto, tvb, offset,
2720 message_length, FALSE);
2721 snmp_tree = proto_item_add_subtree(item, ett);
2727 offset = dissect_snmp_Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2730 offset = dissect_snmp_Messagev2u(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2734 offset = dissect_snmp_SNMPv3Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2738 * Return the length remaining in the tvbuff, so
2739 * if this is SNMP-over-TCP, our caller thinks there's
2740 * nothing left to dissect.
2742 proto_tree_add_text(snmp_tree, tvb, offset, -1,"Unknown version");
2743 return length_remaining;
2747 next_tvb_call(&var_list, pinfo, tree, NULL, data_handle);
2753 dissect_snmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2755 conversation_t *conversation;
2764 * See if this looks like SNMP or not. if not, return 0 so
2765 * wireshark can try som other dissector instead.
2767 /* All SNMP packets are BER encoded and consist of a SEQUENCE
2768 * that spans the entire PDU. The first item is an INTEGER that
2769 * has the values 0-2 (version 1-3).
2770 * if not it is not snmp.
2772 /* SNMP starts with a SEQUENCE */
2773 offset = get_ber_identifier(tvb, 0, &tmp_class, &tmp_pc, &tmp_tag);
2774 if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_SEQUENCE)){
2777 /* then comes a length which spans the rest of the tvb */
2778 offset = get_ber_length(tvb, offset, &tmp_length, &tmp_ind);
2779 if(tmp_length!=(guint32)tvb_reported_length_remaining(tvb, offset)){
2782 /* then comes an INTEGER (version)*/
2783 offset = get_ber_identifier(tvb, offset, &tmp_class, &tmp_pc, &tmp_tag);
2784 if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_INTEGER)){
2787 /* do we need to test that version is 0 - 2 (version1-3) ? */
2791 * The first SNMP packet goes to the SNMP port; the second one
2792 * may come from some *other* port, but goes back to the same
2793 * IP address and port as the ones from which the first packet
2794 * came; all subsequent packets presumably go between those two
2795 * IP addresses and ports.
2797 * If this packet went to the SNMP port, we check to see if
2798 * there's already a conversation with one address/port pair
2799 * matching the source IP address and port of this packet,
2800 * the other address matching the destination IP address of this
2801 * packet, and any destination port.
2803 * If not, we create one, with its address 1/port 1 pair being
2804 * the source address/port of this packet, its address 2 being
2805 * the destination address of this packet, and its port 2 being
2806 * wildcarded, and give it the SNMP dissector as a dissector.
2808 if (pinfo->destport == UDP_PORT_SNMP) {
2809 conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
2810 pinfo->srcport, 0, NO_PORT_B);
2811 if( (conversation == NULL) || (conversation->dissector_handle!=snmp_handle) ){
2812 conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
2813 pinfo->srcport, 0, NO_PORT2);
2814 conversation_set_dissector(conversation, snmp_handle);
2818 return dissect_snmp_pdu(tvb, 0, pinfo, tree, proto_snmp, ett_snmp, FALSE);
2821 dissect_snmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2826 while (tvb_reported_length_remaining(tvb, offset) > 0) {
2827 message_len = dissect_snmp_pdu(tvb, 0, pinfo, tree,
2828 proto_snmp, ett_snmp, TRUE);
2829 if (message_len == 0) {
2831 * We don't have all the data for that message,
2832 * so we need to do desegmentation;
2833 * "dissect_snmp_pdu()" has set that up.
2837 offset += message_len;
2842 dissect_smux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2844 proto_tree *smux_tree = NULL;
2845 proto_item *item = NULL;
2847 next_tvb_init(&var_list);
2849 if (check_col(pinfo->cinfo, COL_PROTOCOL))
2850 col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMUX");
2853 item = proto_tree_add_item(tree, proto_smux, tvb, 0, -1, FALSE);
2854 smux_tree = proto_item_add_subtree(item, ett_smux);
2857 dissect_SMUX_PDUs_PDU(tvb, pinfo, tree);
2862 MD5 Password to Key Algorithm
2865 static void snmp_usm_password_to_key_md5(const guint8 *password,
2867 const guint8 *engineID,
2871 guint8 *cp, password_buf[64];
2872 guint32 password_index = 0;
2873 guint32 count = 0, i;
2875 md5_init(&MD); /* initialize MD5 */
2877 /**********************************************/
2878 /* Use while loop until we've done 1 Megabyte */
2879 /**********************************************/
2880 while (count < 1048576) {
2882 for (i = 0; i < 64; i++) {
2883 /*************************************************/
2884 /* Take the next octet of the password, wrapping */
2885 /* to the beginning of the password as necessary.*/
2886 /*************************************************/
2887 *cp++ = password[password_index++ % passwordlen];
2889 md5_append(&MD, password_buf, 64);
2892 md5_finish(&MD, key1); /* tell MD5 we're done */
2894 /*****************************************************/
2895 /* Now localize the key with the engineID and pass */
2896 /* through MD5 to produce final key */
2897 /* May want to ensure that engineLength <= 32, */
2898 /* otherwise need to use a buffer larger than 64 */
2899 /*****************************************************/
2902 md5_append(&MD, key1, 16);
2903 md5_append(&MD, engineID, engineLength);
2904 md5_append(&MD, key1, 16);
2905 md5_finish(&MD, key);
2914 SHA1 Password to Key Algorithm COPIED from RFC 3414 A.2.2
2917 static void snmp_usm_password_to_key_sha1(const guint8 *password,
2919 const guint8 *engineID,
2923 guint8 *cp, password_buf[72];
2924 guint32 password_index = 0;
2925 guint32 count = 0, i;
2927 sha1_starts(&SH); /* initialize SHA */
2929 /**********************************************/
2930 /* Use while loop until we've done 1 Megabyte */
2931 /**********************************************/
2932 while (count < 1048576) {
2934 for (i = 0; i < 64; i++) {
2935 /*************************************************/
2936 /* Take the next octet of the password, wrapping */
2937 /* to the beginning of the password as necessary.*/
2938 /*************************************************/
2939 *cp++ = password[password_index++ % passwordlen];
2941 sha1_update (&SH, password_buf, 64);
2944 sha1_finish(&SH, key);
2946 /*****************************************************/
2947 /* Now localize the key with the engineID and pass */
2948 /* through SHA to produce final key */
2949 /* May want to ensure that engineLength <= 32, */
2950 /* otherwise need to use a buffer larger than 72 */
2951 /*****************************************************/
2952 memcpy(password_buf, key, 20);
2953 memcpy(password_buf+20, engineID, engineLength);
2954 memcpy(password_buf+20+engineLength, key, 20);
2957 sha1_update(&SH, password_buf, 40+engineLength);
2958 sha1_finish(&SH, key);
2963 static void process_prefs(void) {}
2965 static void* snmp_users_copy_cb(void* dest, const void* orig, unsigned len _U_) {
2966 const snmp_ue_assoc_t* o = orig;
2967 snmp_ue_assoc_t* d = dest;
2969 d->auth_model = o->auth_model;
2970 d->user.authModel = auth_models[o->auth_model];
2972 d->priv_proto = o->priv_proto;
2973 d->user.privProtocol = priv_protos[o->priv_proto];
2975 d->user.userName.data = g_memdup(o->user.userName.data,o->user.userName.len);
2976 d->user.userName.len = o->user.userName.len;
2978 d->user.authPassword.data = o->user.authPassword.data ? g_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
2979 d->user.authPassword.len = o->user.authPassword.len;
2981 d->user.privPassword.data = o->user.privPassword.data ? g_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
2982 d->user.privPassword.len = o->user.privPassword.len;
2984 d->engine.len = o->engine.len;
2985 if (o->engine.data) {
2986 d->engine.data = g_memdup(o->engine.data,o->engine.len);
2989 d->user.authKey.data = o->user.authKey.data ? g_memdup(o->user.authKey.data,o->user.authKey.len) : NULL;
2990 d->user.authKey.len = o->user.authKey.len;
2992 d->user.privKey.data = o->user.privKey.data ? g_memdup(o->user.privKey.data,o->user.privKey.len) : NULL;
2993 d->user.privKey.len = o->user.privKey.len;
2998 static void snmp_users_free_cb(void* p) {
2999 snmp_ue_assoc_t* ue = p;
3000 if (ue->user.userName.data) g_free(ue->user.userName.data);
3001 if (ue->user.authPassword.data) g_free(ue->user.authPassword.data);
3002 if (ue->user.privPassword.data) g_free(ue->user.privPassword.data);
3003 if (ue->user.authKey.data) g_free(ue->user.authKey.data);
3004 if (ue->user.privKey.data) g_free(ue->user.privKey.data);
3005 if (ue->engine.data) g_free(ue->engine.data);
3008 static void snmp_users_update_cb(void* p _U_, const char** err) {
3009 snmp_ue_assoc_t* ue = p;
3010 GString* es = g_string_new("");
3014 if (! ue->user.userName.len) g_string_append(es,"no userName, ");
3015 if (ue->user.authPassword.len < 8) g_string_sprintfa(es,"short authPassword (%d), ", ue->user.authPassword.len);
3016 if (ue->user.privPassword.len < 8) g_string_sprintfa(es,"short privPassword (%d), ", ue->user.privPassword.len);
3019 g_string_truncate(es,es->len-2);
3020 *err = ep_strdup(es->str);
3023 g_string_free(es,TRUE);
3028 UAT_LSTRING_CB_DEF(snmp_users,userName,snmp_ue_assoc_t,user.userName.data,user.userName.len)
3029 UAT_LSTRING_CB_DEF(snmp_users,authPassword,snmp_ue_assoc_t,user.authPassword.data,user.authPassword.len)
3030 UAT_LSTRING_CB_DEF(snmp_users,privPassword,snmp_ue_assoc_t,user.privPassword.data,user.privPassword.len)
3031 UAT_BUFFER_CB_DEF(snmp_users,engine_id,snmp_ue_assoc_t,engine.data,engine.len)
3032 UAT_VS_DEF(snmp_users,auth_model,snmp_ue_assoc_t,0,"MD5")
3033 UAT_VS_DEF(snmp_users,priv_proto,snmp_ue_assoc_t,0,"DES")
3035 /*--- proto_register_snmp -------------------------------------------*/
3036 void proto_register_snmp(void) {
3037 /* List of fields */
3038 static hf_register_info hf[] = {
3039 { &hf_snmp_v3_flags_auth,
3040 { "Authenticated", "snmp.v3.flags.auth", FT_BOOLEAN, 8,
3041 TFS(&flags_set_truth), TH_AUTH, "", HFILL }},
3042 { &hf_snmp_v3_flags_crypt,
3043 { "Encrypted", "snmp.v3.flags.crypt", FT_BOOLEAN, 8,
3044 TFS(&flags_set_truth), TH_CRYPT, "", HFILL }},
3045 { &hf_snmp_v3_flags_report,
3046 { "Reportable", "snmp.v3.flags.report", FT_BOOLEAN, 8,
3047 TFS(&flags_set_truth), TH_REPORT, "", HFILL }},
3048 { &hf_snmp_engineid_conform, {
3049 "Engine ID Conformance", "snmp.engineid.conform", FT_BOOLEAN, 8,
3050 TFS(&tfs_snmp_engineid_conform), F_SNMP_ENGINEID_CONFORM, "Engine ID RFC3411 Conformance", HFILL }},
3051 { &hf_snmp_engineid_enterprise, {
3052 "Engine Enterprise ID", "snmp.engineid.enterprise", FT_UINT32, BASE_DEC,
3053 VALS(sminmpec_values), 0, "Engine Enterprise ID", HFILL }},
3054 { &hf_snmp_engineid_format, {
3055 "Engine ID Format", "snmp.engineid.format", FT_UINT8, BASE_DEC,
3056 VALS(snmp_engineid_format_vals), 0, "Engine ID Format", HFILL }},
3057 { &hf_snmp_engineid_ipv4, {
3058 "Engine ID Data: IPv4 address", "snmp.engineid.ipv4", FT_IPv4, BASE_NONE,
3059 NULL, 0, "Engine ID Data: IPv4 address", HFILL }},
3060 { &hf_snmp_engineid_ipv6, {
3061 "Engine ID Data: IPv6 address", "snmp.engineid.ipv6", FT_IPv6, BASE_NONE,
3062 NULL, 0, "Engine ID Data: IPv6 address", HFILL }},
3063 { &hf_snmp_engineid_mac, {
3064 "Engine ID Data: MAC address", "snmp.engineid.mac", FT_ETHER, BASE_NONE,
3065 NULL, 0, "Engine ID Data: MAC address", HFILL }},
3066 { &hf_snmp_engineid_text, {
3067 "Engine ID Data: Text", "snmp.engineid.text", FT_STRING, BASE_NONE,
3068 NULL, 0, "Engine ID Data: Text", HFILL }},
3069 { &hf_snmp_engineid_time, {
3070 "Engine ID Data: Time", "snmp.engineid.time", FT_ABSOLUTE_TIME, BASE_NONE,
3071 NULL, 0, "Engine ID Data: Time", HFILL }},
3072 { &hf_snmp_engineid_data, {
3073 "Engine ID Data", "snmp.engineid.data", FT_BYTES, BASE_HEX,
3074 NULL, 0, "Engine ID Data", HFILL }},
3075 { &hf_snmp_msgAuthentication,
3076 { "Authentication", "snmp.v3.auth", FT_BOOLEAN, 8,
3077 TFS(&auth_flags), 0, "", HFILL }},
3078 { &hf_snmp_decryptedPDU, {
3079 "Decrypted ScopedPDU", "snmp.decrypted_pdu", FT_BYTES, BASE_HEX,
3080 NULL, 0, "Decrypted PDU", HFILL }},
3081 { &hf_snmp_noSuchObject, { "noSuchObject", "snmp.noSuchObject", FT_NONE, BASE_NONE, NULL, 0, "", HFILL }},
3082 { &hf_snmp_noSuchInstance, { "noSuchInstance", "snmp.noSuchInstance", FT_NONE, BASE_DEC, NULL, 0, "", HFILL }},
3083 { &hf_snmp_endOfMibView, { "endOfMibView", "snmp.endOfMibView", FT_NONE, BASE_DEC, NULL, 0, "", HFILL }},
3084 { &hf_snmp_unSpecified, { "unSpecified", "snmp.unSpecified", FT_NONE, BASE_DEC, NULL, 0, "", HFILL }},
3086 { &hf_snmp_integer32_value, { "Value (Integer32)", "snmp.value.int", FT_INT64, BASE_DEC, NULL, 0, "", HFILL }},
3087 { &hf_snmp_octetstring_value, { "Value (OctetString)", "snmp.value.octets", FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
3088 { &hf_snmp_oid_value, { "Value (OID)", "snmp.value.oid", FT_OID, BASE_NONE, NULL, 0, "", HFILL }},
3089 { &hf_snmp_null_value, { "Value (Null)", "snmp.value.null", FT_NONE, BASE_NONE, NULL, 0, "", HFILL }},
3090 { &hf_snmp_ipv4_value, { "Value (IpAddress)", "snmp.value.ipv4", FT_IPv4, BASE_NONE, NULL, 0, "", HFILL }},
3091 { &hf_snmp_ipv6_value, { "Value (IpAddress)", "snmp.value.ipv6", FT_IPv6, BASE_NONE, NULL, 0, "", HFILL }},
3092 { &hf_snmp_anyaddress_value, { "Value (IpAddress)", "snmp.value.addr", FT_BYTES, BASE_DEC, NULL, 0, "", HFILL }},
3093 { &hf_snmp_unsigned32_value, { "Value (Unsigned32)", "snmp.value.u32", FT_INT64, BASE_DEC, NULL, 0, "", HFILL }},
3094 { &hf_snmp_gauge32_value, { "Value (Gauge32)", "snmp.value.g32", FT_INT64, BASE_DEC, NULL, 0, "", HFILL }},
3095 { &hf_snmp_unknown_value, { "Value (Unknown)", "snmp.value.unk", FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
3096 { &hf_snmp_counter_value, { "Value (Counter32)", "snmp.value.counter", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3097 { &hf_snmp_big_counter_value, { "Value (Counter64)", "snmp.value.counter", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3098 { &hf_snmp_nsap_value, { "Value (NSAP)", "snmp.value.nsap", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3099 { &hf_snmp_timeticks_value, { "Value (Timeticks)", "snmp.value.timeticks", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3100 { &hf_snmp_opaque_value, { "Value (Opaque)", "snmp.value.opaque", FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
3101 { &hf_snmp_objectname, { "Object Name", "snmp.name", FT_OID, BASE_NONE, NULL, 0, "", HFILL }},
3102 { &hf_snmp_scalar_instance_index, { "Scalar Instance Index", "snmp.name.index", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3106 /*--- Included file: packet-snmp-hfarr.c ---*/
3107 #line 1 "packet-snmp-hfarr.c"
3108 { &hf_snmp_SMUX_PDUs_PDU,
3109 { "SMUX-PDUs", "snmp.SMUX_PDUs",
3110 FT_UINT32, BASE_DEC, VALS(snmp_SMUX_PDUs_vals), 0,
3111 "snmp.SMUX_PDUs", HFILL }},
3113 { "version", "snmp.version",
3114 FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
3115 "snmp.Version", HFILL }},
3116 { &hf_snmp_community,
3117 { "community", "snmp.community",
3118 FT_STRING, BASE_HEX, NULL, 0,
3119 "snmp.OCTET_STRING", HFILL }},
3121 { "data", "snmp.data",
3122 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3123 "snmp.PDUs", HFILL }},
3124 { &hf_snmp_parameters,
3125 { "parameters", "snmp.parameters",
3126 FT_BYTES, BASE_HEX, NULL, 0,
3127 "snmp.OCTET_STRING", HFILL }},
3129 { "datav2u", "snmp.datav2u",
3130 FT_UINT32, BASE_DEC, VALS(snmp_T_datav2u_vals), 0,
3131 "snmp.T_datav2u", HFILL }},
3132 { &hf_snmp_v2u_plaintext,
3133 { "plaintext", "snmp.plaintext",
3134 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3135 "snmp.PDUs", HFILL }},
3136 { &hf_snmp_encrypted,
3137 { "encrypted", "snmp.encrypted",
3138 FT_BYTES, BASE_HEX, NULL, 0,
3139 "snmp.OCTET_STRING", HFILL }},
3140 { &hf_snmp_msgAuthoritativeEngineID,
3141 { "msgAuthoritativeEngineID", "snmp.msgAuthoritativeEngineID",
3142 FT_BYTES, BASE_HEX, NULL, 0,
3143 "snmp.T_msgAuthoritativeEngineID", HFILL }},
3144 { &hf_snmp_msgAuthoritativeEngineBoots,
3145 { "msgAuthoritativeEngineBoots", "snmp.msgAuthoritativeEngineBoots",
3146 FT_UINT32, BASE_DEC, NULL, 0,
3147 "snmp.T_msgAuthoritativeEngineBoots", HFILL }},
3148 { &hf_snmp_msgAuthoritativeEngineTime,
3149 { "msgAuthoritativeEngineTime", "snmp.msgAuthoritativeEngineTime",
3150 FT_UINT32, BASE_DEC, NULL, 0,
3151 "snmp.T_msgAuthoritativeEngineTime", HFILL }},
3152 { &hf_snmp_msgUserName,
3153 { "msgUserName", "snmp.msgUserName",
3154 FT_STRING, BASE_HEX, NULL, 0,
3155 "snmp.T_msgUserName", HFILL }},
3156 { &hf_snmp_msgAuthenticationParameters,
3157 { "msgAuthenticationParameters", "snmp.msgAuthenticationParameters",
3158 FT_BYTES, BASE_HEX, NULL, 0,
3159 "snmp.T_msgAuthenticationParameters", HFILL }},
3160 { &hf_snmp_msgPrivacyParameters,
3161 { "msgPrivacyParameters", "snmp.msgPrivacyParameters",
3162 FT_BYTES, BASE_HEX, NULL, 0,
3163 "snmp.T_msgPrivacyParameters", HFILL }},
3164 { &hf_snmp_msgVersion,
3165 { "msgVersion", "snmp.msgVersion",
3166 FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
3167 "snmp.Version", HFILL }},
3168 { &hf_snmp_msgGlobalData,
3169 { "msgGlobalData", "snmp.msgGlobalData",
3170 FT_NONE, BASE_NONE, NULL, 0,
3171 "snmp.HeaderData", HFILL }},
3172 { &hf_snmp_msgSecurityParameters,
3173 { "msgSecurityParameters", "snmp.msgSecurityParameters",
3174 FT_BYTES, BASE_HEX, NULL, 0,
3175 "snmp.T_msgSecurityParameters", HFILL }},
3177 { "msgData", "snmp.msgData",
3178 FT_UINT32, BASE_DEC, VALS(snmp_ScopedPduData_vals), 0,
3179 "snmp.ScopedPduData", HFILL }},
3181 { "msgID", "snmp.msgID",
3182 FT_UINT32, BASE_DEC, NULL, 0,
3183 "snmp.INTEGER_0_2147483647", HFILL }},
3184 { &hf_snmp_msgMaxSize,
3185 { "msgMaxSize", "snmp.msgMaxSize",
3186 FT_UINT32, BASE_DEC, NULL, 0,
3187 "snmp.INTEGER_484_2147483647", HFILL }},
3188 { &hf_snmp_msgFlags,
3189 { "msgFlags", "snmp.msgFlags",
3190 FT_BYTES, BASE_HEX, NULL, 0,
3191 "snmp.T_msgFlags", HFILL }},
3192 { &hf_snmp_msgSecurityModel,
3193 { "msgSecurityModel", "snmp.msgSecurityModel",
3194 FT_UINT32, BASE_DEC, VALS(sec_models), 0,
3195 "snmp.T_msgSecurityModel", HFILL }},
3196 { &hf_snmp_plaintext,
3197 { "plaintext", "snmp.plaintext",
3198 FT_NONE, BASE_NONE, NULL, 0,
3199 "snmp.ScopedPDU", HFILL }},
3200 { &hf_snmp_encryptedPDU,
3201 { "encryptedPDU", "snmp.encryptedPDU",
3202 FT_BYTES, BASE_HEX, NULL, 0,
3203 "snmp.T_encryptedPDU", HFILL }},
3204 { &hf_snmp_contextEngineID,
3205 { "contextEngineID", "snmp.contextEngineID",
3206 FT_BYTES, BASE_HEX, NULL, 0,
3207 "snmp.SnmpEngineID", HFILL }},
3208 { &hf_snmp_contextName,
3209 { "contextName", "snmp.contextName",
3210 FT_BYTES, BASE_HEX, NULL, 0,
3211 "snmp.OCTET_STRING", HFILL }},
3212 { &hf_snmp_get_request,
3213 { "get-request", "snmp.get_request",
3214 FT_NONE, BASE_NONE, NULL, 0,
3215 "snmp.GetRequest_PDU", HFILL }},
3216 { &hf_snmp_get_next_request,
3217 { "get-next-request", "snmp.get_next_request",
3218 FT_NONE, BASE_NONE, NULL, 0,
3219 "snmp.GetNextRequest_PDU", HFILL }},
3220 { &hf_snmp_get_response,
3221 { "get-response", "snmp.get_response",
3222 FT_NONE, BASE_NONE, NULL, 0,
3223 "snmp.GetResponse_PDU", HFILL }},
3224 { &hf_snmp_set_request,
3225 { "set-request", "snmp.set_request",
3226 FT_NONE, BASE_NONE, NULL, 0,
3227 "snmp.SetRequest_PDU", HFILL }},
3229 { "trap", "snmp.trap",
3230 FT_NONE, BASE_NONE, NULL, 0,
3231 "snmp.Trap_PDU", HFILL }},
3232 { &hf_snmp_getBulkRequest,
3233 { "getBulkRequest", "snmp.getBulkRequest",
3234 FT_NONE, BASE_NONE, NULL, 0,
3235 "snmp.GetBulkRequest_PDU", HFILL }},
3236 { &hf_snmp_informRequest,
3237 { "informRequest", "snmp.informRequest",
3238 FT_NONE, BASE_NONE, NULL, 0,
3239 "snmp.InformRequest_PDU", HFILL }},
3240 { &hf_snmp_sNMPv2_Trap,
3241 { "sNMPv2-Trap", "snmp.sNMPv2_Trap",
3242 FT_NONE, BASE_NONE, NULL, 0,
3243 "snmp.SNMPv2_Trap_PDU", HFILL }},
3245 { "report", "snmp.report",
3246 FT_NONE, BASE_NONE, NULL, 0,
3247 "snmp.Report_PDU", HFILL }},
3248 { &hf_snmp_request_id,
3249 { "request-id", "snmp.request_id",
3250 FT_INT32, BASE_DEC, NULL, 0,
3251 "snmp.INTEGER", HFILL }},
3252 { &hf_snmp_error_status,
3253 { "error-status", "snmp.error_status",
3254 FT_INT32, BASE_DEC, VALS(snmp_T_error_status_vals), 0,
3255 "snmp.T_error_status", HFILL }},
3256 { &hf_snmp_error_index,
3257 { "error-index", "snmp.error_index",
3258 FT_INT32, BASE_DEC, NULL, 0,
3259 "snmp.INTEGER", HFILL }},
3260 { &hf_snmp_variable_bindings,
3261 { "variable-bindings", "snmp.variable_bindings",
3262 FT_UINT32, BASE_DEC, NULL, 0,
3263 "snmp.VarBindList", HFILL }},
3264 { &hf_snmp_bulkPDU_request_id,
3265 { "request-id", "snmp.request_id",
3266 FT_INT32, BASE_DEC, NULL, 0,
3267 "snmp.Integer32", HFILL }},
3268 { &hf_snmp_non_repeaters,
3269 { "non-repeaters", "snmp.non_repeaters",
3270 FT_UINT32, BASE_DEC, NULL, 0,
3271 "snmp.INTEGER_0_2147483647", HFILL }},
3272 { &hf_snmp_max_repetitions,
3273 { "max-repetitions", "snmp.max_repetitions",
3274 FT_UINT32, BASE_DEC, NULL, 0,
3275 "snmp.INTEGER_0_2147483647", HFILL }},
3276 { &hf_snmp_enterprise,
3277 { "enterprise", "snmp.enterprise",
3278 FT_OID, BASE_NONE, NULL, 0,
3279 "snmp.EnterpriseOID", HFILL }},
3280 { &hf_snmp_agent_addr,
3281 { "agent-addr", "snmp.agent_addr",
3282 FT_IPv4, BASE_NONE, NULL, 0,
3283 "snmp.NetworkAddress", HFILL }},
3284 { &hf_snmp_generic_trap,
3285 { "generic-trap", "snmp.generic_trap",
3286 FT_INT32, BASE_DEC, VALS(snmp_T_generic_trap_vals), 0,
3287 "snmp.T_generic_trap", HFILL }},
3288 { &hf_snmp_specific_trap,
3289 { "specific-trap", "snmp.specific_trap",
3290 FT_INT32, BASE_DEC, NULL, 0,
3291 "snmp.INTEGER", HFILL }},
3292 { &hf_snmp_time_stamp,
3293 { "time-stamp", "snmp.time_stamp",
3294 FT_UINT32, BASE_DEC, NULL, 0,
3295 "snmp.TimeTicks", HFILL }},
3297 { "name", "snmp.name",
3298 FT_OID, BASE_NONE, NULL, 0,
3299 "snmp.ObjectName", HFILL }},
3300 { &hf_snmp_valueType,
3301 { "valueType", "snmp.valueType",
3302 FT_NONE, BASE_NONE, NULL, 0,
3303 "snmp.NULL", HFILL }},
3304 { &hf_snmp_VarBindList_item,
3305 { "Item", "snmp.VarBindList_item",
3306 FT_NONE, BASE_NONE, NULL, 0,
3307 "snmp.VarBind", HFILL }},
3309 { "open", "snmp.open",
3310 FT_UINT32, BASE_DEC, VALS(snmp_OpenPDU_vals), 0,
3311 "snmp.OpenPDU", HFILL }},
3313 { "close", "snmp.close",
3314 FT_INT32, BASE_DEC, VALS(snmp_ClosePDU_U_vals), 0,
3315 "snmp.ClosePDU", HFILL }},
3316 { &hf_snmp_registerRequest,
3317 { "registerRequest", "snmp.registerRequest",
3318 FT_NONE, BASE_NONE, NULL, 0,
3319 "snmp.RReqPDU", HFILL }},
3320 { &hf_snmp_registerResponse,
3321 { "registerResponse", "snmp.registerResponse",
3322 FT_UINT32, BASE_DEC, VALS(snmp_RegisterResponse_vals), 0,
3323 "snmp.RegisterResponse", HFILL }},
3324 { &hf_snmp_commitOrRollback,
3325 { "commitOrRollback", "snmp.commitOrRollback",
3326 FT_INT32, BASE_DEC, VALS(snmp_SOutPDU_U_vals), 0,
3327 "snmp.SOutPDU", HFILL }},
3329 { "rRspPDU", "snmp.rRspPDU",
3330 FT_INT32, BASE_DEC, VALS(snmp_RRspPDU_U_vals), 0,
3331 "snmp.RRspPDU", HFILL }},
3333 { "pDUs", "snmp.pDUs",
3334 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3335 "snmp.PDUs", HFILL }},
3336 { &hf_snmp_smux_simple,
3337 { "smux-simple", "snmp.smux_simple",
3338 FT_NONE, BASE_NONE, NULL, 0,
3339 "snmp.SimpleOpen", HFILL }},
3340 { &hf_snmp_smux_version,
3341 { "smux-version", "snmp.smux_version",
3342 FT_INT32, BASE_DEC, VALS(snmp_T_smux_version_vals), 0,
3343 "snmp.T_smux_version", HFILL }},
3344 { &hf_snmp_identity,
3345 { "identity", "snmp.identity",
3346 FT_OID, BASE_NONE, NULL, 0,
3347 "snmp.OBJECT_IDENTIFIER", HFILL }},
3348 { &hf_snmp_description,
3349 { "description", "snmp.description",
3350 FT_BYTES, BASE_HEX, NULL, 0,
3351 "snmp.DisplayString", HFILL }},
3352 { &hf_snmp_password,
3353 { "password", "snmp.password",
3354 FT_BYTES, BASE_HEX, NULL, 0,
3355 "snmp.OCTET_STRING", HFILL }},
3357 { "subtree", "snmp.subtree",
3358 FT_OID, BASE_NONE, NULL, 0,
3359 "snmp.ObjectName", HFILL }},
3360 { &hf_snmp_priority,
3361 { "priority", "snmp.priority",
3362 FT_INT32, BASE_DEC, NULL, 0,
3363 "snmp.INTEGER_M1_2147483647", HFILL }},
3364 { &hf_snmp_operation,
3365 { "operation", "snmp.operation",
3366 FT_INT32, BASE_DEC, VALS(snmp_T_operation_vals), 0,
3367 "snmp.T_operation", HFILL }},
3369 /*--- End of included file: packet-snmp-hfarr.c ---*/
3370 #line 1913 "packet-snmp-template.c"
3373 /* List of subtrees */
3374 static gint *ett[] = {
3380 &ett_authParameters,
3385 &ett_decoding_error,
3387 /*--- Included file: packet-snmp-ettarr.c ---*/
3388 #line 1 "packet-snmp-ettarr.c"
3390 &ett_snmp_Messagev2u,
3391 &ett_snmp_T_datav2u,
3392 &ett_snmp_UsmSecurityParameters,
3393 &ett_snmp_SNMPv3Message,
3394 &ett_snmp_HeaderData,
3395 &ett_snmp_ScopedPduData,
3396 &ett_snmp_ScopedPDU,
3400 &ett_snmp_Trap_PDU_U,
3402 &ett_snmp_VarBindList,
3403 &ett_snmp_SMUX_PDUs,
3404 &ett_snmp_RegisterResponse,
3406 &ett_snmp_SimpleOpen_U,
3407 &ett_snmp_RReqPDU_U,
3409 /*--- End of included file: packet-snmp-ettarr.c ---*/
3410 #line 1929 "packet-snmp-template.c"
3412 module_t *snmp_module;
3413 static uat_field_t users_fields[] = {
3414 UAT_FLD_BUFFER(snmp_users,engine_id,"Engine-id for this entry (empty = any)"),
3415 UAT_FLD_LSTRING(snmp_users,userName,"The username"),
3416 UAT_FLD_VS(snmp_users,auth_model,auth_types,"Algorithm to be used for authentication."),
3417 UAT_FLD_LSTRING(snmp_users,authPassword,"The password used for authenticating packets for this entry"),
3418 UAT_FLD_VS(snmp_users,priv_proto,priv_types,"Algorithm to be used for privacy."),
3419 UAT_FLD_LSTRING(snmp_users,privPassword,"The password used for encrypting packets for this entry"),
3423 assocs_uat = uat_new("SNMP Users",
3424 sizeof(snmp_ue_assoc_t),
3430 "ChSNMPUsersSection",
3432 snmp_users_update_cb,
3436 /* Register protocol */
3437 proto_snmp = proto_register_protocol(PNAME, PSNAME, PFNAME);
3438 new_register_dissector("snmp", dissect_snmp, proto_snmp);
3440 /* Register fields and subtrees */
3441 proto_register_field_array(proto_snmp, hf, array_length(hf));
3442 proto_register_subtree_array(ett, array_length(ett));
3445 /* Register configuration preferences */
3446 snmp_module = prefs_register_protocol(proto_snmp, process_prefs);
3447 prefs_register_bool_preference(snmp_module, "display_oid",
3448 "Show SNMP OID in info column",
3449 "Whether the SNMP OID should be shown in the info column",
3452 prefs_register_obsolete_preference(snmp_module, "mib_modules");
3453 prefs_register_obsolete_preference(snmp_module, "users_file");
3455 prefs_register_bool_preference(snmp_module, "desegment",
3456 "Reassemble SNMP-over-TCP messages\nspanning multiple TCP segments",
3457 "Whether the SNMP dissector should reassemble messages spanning multiple TCP segments."
3458 " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
3461 prefs_register_bool_preference(snmp_module, "var_in_tree",
3462 "Display dissected variables inside SNMP tree",
3463 "ON - display dissected variables inside SNMP tree, OFF - display dissected variables in root tree after SNMP",
3466 prefs_register_uat_preference(snmp_module, "users_table",
3468 "Table of engine-user associations used for authentication and decryption",
3472 value_sub_dissectors_table = register_dissector_table("snmp.variable_oid","SNMP Variable OID", FT_STRING, BASE_NONE);
3474 register_init_routine(renew_ue_cache);
3478 /*--- proto_reg_handoff_snmp ---------------------------------------*/
3479 void proto_reg_handoff_snmp(void) {
3480 dissector_handle_t snmp_tcp_handle;
3482 snmp_handle = find_dissector("snmp");
3484 dissector_add("udp.port", UDP_PORT_SNMP, snmp_handle);
3485 dissector_add("udp.port", UDP_PORT_SNMP_TRAP, snmp_handle);
3486 dissector_add("udp.port", UDP_PORT_SNMP_PATROL, snmp_handle);
3487 dissector_add("ethertype", ETHERTYPE_SNMP, snmp_handle);
3488 dissector_add("ipx.socket", IPX_SOCKET_SNMP_AGENT, snmp_handle);
3489 dissector_add("ipx.socket", IPX_SOCKET_SNMP_SINK, snmp_handle);
3490 dissector_add("hpext.dxsap", HPEXT_SNMP, snmp_handle);
3492 snmp_tcp_handle = create_dissector_handle(dissect_snmp_tcp, proto_snmp);
3493 dissector_add("tcp.port", TCP_PORT_SNMP, snmp_tcp_handle);
3494 dissector_add("tcp.port", TCP_PORT_SNMP_TRAP, snmp_tcp_handle);
3496 data_handle = find_dissector("data");
3499 * Process preference settings.
3501 * We can't do this in the register routine, as preferences aren't
3502 * read until all dissector register routines have been called (so
3503 * that all dissector preferences have been registered).
3510 proto_register_smux(void)
3512 static hf_register_info hf[] = {
3514 { "Version", "smux.version", FT_UINT8, BASE_DEC, NULL,
3517 { "PDU type", "smux.pdutype", FT_UINT8, BASE_DEC, VALS(smux_types),
3520 static gint *ett[] = {
3524 proto_smux = proto_register_protocol("SNMP Multiplex Protocol",
3526 proto_register_field_array(proto_smux, hf, array_length(hf));
3527 proto_register_subtree_array(ett, array_length(ett));
3532 proto_reg_handoff_smux(void)
3534 dissector_handle_t smux_handle;
3536 smux_handle = create_dissector_handle(dissect_smux, proto_smux);
3537 dissector_add("tcp.port", TCP_PORT_SMUX, smux_handle);