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.org>
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 developers");
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 case OID_KEY_TYPE_ETHER:
721 suboid = &(subids[key_start]);
725 buf_len = k->num_subids;
726 suboid = &(subids[key_start]);
736 if( key_len < buf_len ) {
737 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index string should not be longer than remaining oid size");
738 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index string longer than remaining oid size");
739 oid_info_is_ok = FALSE;
743 buf = ep_alloc(buf_len+1);
744 for (i = 0; i < buf_len; i++)
745 buf[i] = (guint8)suboid[i];
748 switch(k->key_type) {
749 case OID_KEY_TYPE_STRING:
750 case OID_KEY_TYPE_IMPLIED_STRING:
751 proto_tree_add_string(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
753 case OID_KEY_TYPE_BYTES:
754 case OID_KEY_TYPE_NSAP:
755 case OID_KEY_TYPE_IMPLIED_BYTES:
756 proto_tree_add_bytes(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
758 case OID_KEY_TYPE_ETHER:
759 proto_tree_add_ether(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
761 case OID_KEY_TYPE_IPADDR: {
762 guint32* ipv4_p = (void*)buf;
763 proto_tree_add_ipv4(pt_name,k->hfid,tvb,name_offset,buf_len, *ipv4_p);
766 DISSECTOR_ASSERT_NOT_REACHED();
771 key_start += buf_len;
773 continue; /* k->next*/
779 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");
780 expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
781 oid_info_is_ok = FALSE;
785 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.");
786 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_ERROR, "COLUMS's parent is not a ROW");
787 oid_info_is_ok = FALSE;
791 /* proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"This kind OID should have no value");
792 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "This kind OID should have no value"); */
793 oid_info_is_ok = FALSE;
799 if (oid_info_is_ok) {
800 if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
801 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
803 if ((oid_info->value_type->ber_class != BER_CLASS_ANY) &&
804 (ber_class != oid_info->value_type->ber_class))
805 format_error = BER_WRONG_TAG;
807 if ((oid_info->value_type->ber_tag != BER_TAG_ANY) &&
808 (tag != oid_info->value_type->ber_tag))
809 format_error = BER_WRONG_TAG;
811 max_len = oid_info->value_type->max_len == -1 ? 0xffffff : oid_info->value_type->max_len;
812 min_len = oid_info->value_type->min_len;
814 if ((int)value_len < min_len || (int)value_len > max_len)
815 format_error = BER_WRONG_LENGTH;
817 pi_value = proto_tree_add_item(pt_varbind,oid_info->value_hfid,tvb,value_offset,value_len,FALSE);
820 switch(ber_class|(tag<<4)) {
821 case BER_CLASS_UNI|(BER_UNI_TAG_INTEGER<<4):
822 max_len = 4; min_len = 1;
823 if (value_len > (guint)max_len && value_len < (guint)min_len) format_error = BER_WRONG_LENGTH;
824 hfid = hf_snmp_integer32_value;
826 case BER_CLASS_UNI|(BER_UNI_TAG_OCTETSTRING<<4):
827 hfid = hf_snmp_octetstring_value;
829 case BER_CLASS_UNI|(BER_UNI_TAG_OID<<4):
830 max_len = -1; min_len = 1;
831 if (value_len < (guint)min_len) format_error = BER_WRONG_LENGTH;
832 hfid = hf_snmp_oid_value;
834 case BER_CLASS_UNI|(BER_UNI_TAG_NULL<<4):
835 max_len = 0; min_len = 0;
836 if (value_len != 0) format_error = BER_WRONG_LENGTH;
837 hfid = hf_snmp_null_value;
839 case BER_CLASS_APP: /* | (SNMP_IPA<<4)*/
841 case 4: hfid = hf_snmp_ipv4_value; break;
842 case 16: hfid = hf_snmp_ipv6_value; break;
843 default: hfid = hf_snmp_anyaddress_value; break;
846 case BER_CLASS_APP|(SNMP_U32<<4):
847 hfid = hf_snmp_unsigned32_value;
849 case BER_CLASS_APP|(SNMP_GGE<<4):
850 hfid = hf_snmp_gauge32_value;
852 case BER_CLASS_APP|(SNMP_CNT<<4):
853 hfid = hf_snmp_counter_value;
855 case BER_CLASS_APP|(SNMP_TIT<<4):
856 hfid = hf_snmp_timeticks_value;
858 case BER_CLASS_APP|(SNMP_OPQ<<4):
859 hfid = hf_snmp_opaque_value;
861 case BER_CLASS_APP|(SNMP_NSP<<4):
862 hfid = hf_snmp_nsap_value;
864 case BER_CLASS_APP|(SNMP_C64<<4):
865 hfid = hf_snmp_big_counter_value;
868 hfid = hf_snmp_unknown_value;
872 pi_value = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,FALSE);
873 expert_add_info_format(actx->pinfo, pi_value, PI_UNDECODED, PI_NOTE, "Unresolved value, Missing MIB");
874 oid_info_is_ok = FALSE;
877 pt_value = proto_item_add_subtree(pi_value,ett_value);
879 if (value_len > 0 && oid_string) {
880 tvbuff_t* sub_tvb = tvb_new_subset(tvb, value_offset, value_len, value_len);
882 next_tvb_add_string(&var_list, sub_tvb, (snmp_var_in_tree) ? pt_value : NULL, value_sub_dissectors_table, oid_string);
887 if (pi_value) proto_item_fill_label(pi_value->finfo, label);
889 if (oid_info && oid_info->name) {
891 repr = ep_strdup_printf("%s.%s (%s)",
893 oid_subid2string(&(subids[oid_matched]),oid_left),
894 oid_subid2string(subids,oid_matched+oid_left));
895 info_oid = ep_strdup_printf("%s.%s", oid_info->name,
896 oid_subid2string(&(subids[oid_matched]),oid_left));
898 repr = ep_strdup_printf("%s (%s)",
900 oid_subid2string(subids,oid_matched));
901 info_oid = oid_info->name;
903 } else if (oid_string) {
904 repr = ep_strdup(oid_string);
905 info_oid = oid_string;
907 repr = ep_strdup("[Bad OID]");
910 valstr = strstr(label,": ");
911 valstr = valstr ? valstr+2 : label;
913 proto_item_set_text(pi_varbind,"%s: %s",repr,valstr);
915 if (display_oid && info_oid && check_col(actx->pinfo->cinfo, COL_INFO)) {
916 col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", info_oid);
919 switch (format_error) {
920 case BER_WRONG_LENGTH: {
921 proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
922 proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong value length: %u expecting: %u <= len <= %u",
925 max_len == -1 ? 0xFFFFFF : max_len);
926 pt = proto_item_add_subtree(pi,ett_decoding_error);
927 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong length for SNMP VarBind/value");
928 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
930 case BER_WRONG_TAG: {
931 proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
932 proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong class/tag for Value expected: %d,%d got: %d,%d",
933 oid_info->value_type->ber_class,
934 oid_info->value_type->ber_tag,
937 pt = proto_item_add_subtree(pi,ett_decoding_error);
938 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong class/tag for SNMP VarBind/value");
939 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
945 return seq_offset + seq_len;
949 #define F_SNMP_ENGINEID_CONFORM 0x80
950 #define SNMP_ENGINEID_RFC1910 0x00
951 #define SNMP_ENGINEID_RFC3411 0x01
953 static const true_false_string tfs_snmp_engineid_conform = {
955 "RFC1910 (Non-SNMPv3)"
958 #define SNMP_ENGINEID_FORMAT_IPV4 0x01
959 #define SNMP_ENGINEID_FORMAT_IPV6 0x02
960 #define SNMP_ENGINEID_FORMAT_MACADDRESS 0x03
961 #define SNMP_ENGINEID_FORMAT_TEXT 0x04
962 #define SNMP_ENGINEID_FORMAT_OCTETS 0x05
964 static const value_string snmp_engineid_format_vals[] = {
965 { SNMP_ENGINEID_FORMAT_IPV4, "IPv4 address" },
966 { SNMP_ENGINEID_FORMAT_IPV6, "IPv6 address" },
967 { SNMP_ENGINEID_FORMAT_MACADDRESS, "MAC address" },
968 { SNMP_ENGINEID_FORMAT_TEXT, "Text, administratively assigned" },
969 { SNMP_ENGINEID_FORMAT_OCTETS, "Octets, administratively assigned" },
974 * SNMP Engine ID dissection according to RFC 3411 (SnmpEngineID TC)
975 * or historic RFC 1910 (AgentID)
977 int dissect_snmp_engineid(proto_tree *tree, tvbuff_t *tvb, int offset, int len) {
978 proto_item *item = NULL;
979 guint8 conformance, format;
980 guint32 enterpriseid, seconds;
982 int len_remain = len;
984 /* first bit: engine id conformance */
985 if (len_remain<4) return offset;
986 conformance = ((tvb_get_guint8(tvb, offset)>>7) & 0x01);
987 proto_tree_add_item(tree, hf_snmp_engineid_conform, tvb, offset, 1, FALSE);
989 /* 4-byte enterprise number/name */
990 if (len_remain<4) return offset;
991 enterpriseid = tvb_get_ntohl(tvb, offset);
993 enterpriseid -= 0x80000000; /* ignore first bit */
994 proto_tree_add_uint(tree, hf_snmp_engineid_enterprise, tvb, offset, 4, enterpriseid);
998 switch(conformance) {
1000 case SNMP_ENGINEID_RFC1910:
1001 /* 12-byte AgentID w/ 8-byte trailer */
1002 if (len_remain==8) {
1003 proto_tree_add_text(tree, tvb, offset, 8, "AgentID Trailer: 0x%s",
1004 tvb_bytes_to_str(tvb, offset, 8));
1008 proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC1910>");
1013 case SNMP_ENGINEID_RFC3411: /* variable length: 5..32 */
1015 /* 1-byte format specifier */
1016 if (len_remain<1) return offset;
1017 format = tvb_get_guint8(tvb, offset);
1018 item = proto_tree_add_uint_format(tree, hf_snmp_engineid_format, tvb, offset, 1, format, "Engine ID Format: %s (%d)",
1019 val_to_str(format, snmp_engineid_format_vals, "Reserved/Enterprise-specific"), format);
1024 case SNMP_ENGINEID_FORMAT_IPV4:
1025 /* 4-byte IPv4 address */
1026 if (len_remain==4) {
1027 proto_tree_add_item(tree, hf_snmp_engineid_ipv4, tvb, offset, 4, FALSE);
1032 case SNMP_ENGINEID_FORMAT_IPV6:
1033 /* 16-byte IPv6 address */
1034 if (len_remain==16) {
1035 proto_tree_add_item(tree, hf_snmp_engineid_ipv6, tvb, offset, 16, FALSE);
1040 case SNMP_ENGINEID_FORMAT_MACADDRESS:
1041 /* 6-byte MAC address */
1042 if (len_remain==6) {
1043 proto_tree_add_item(tree, hf_snmp_engineid_mac, tvb, offset, 6, FALSE);
1048 case SNMP_ENGINEID_FORMAT_TEXT:
1049 /* max. 27-byte string, administratively assigned */
1050 if (len_remain<=27) {
1051 proto_tree_add_item(tree, hf_snmp_engineid_text, tvb, offset, len_remain, FALSE);
1057 /* most common enterprise-specific format: (ucd|net)-snmp random */
1058 if ((enterpriseid==2021)||(enterpriseid==8072)) {
1059 proto_item_append_text(item, (enterpriseid==2021) ? ": UCD-SNMP Random" : ": Net-SNMP Random");
1060 /* demystify: 4B random, 4B epoch seconds */
1061 if (len_remain==8) {
1062 proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, 4, FALSE);
1063 seconds = tvb_get_letohl(tvb, offset+4);
1065 proto_tree_add_time_format(tree, hf_snmp_engineid_time, tvb, offset+4, 4,
1066 &ts, "Engine ID Data: Creation Time: %s",
1067 abs_time_secs_to_str(seconds));
1073 case SNMP_ENGINEID_FORMAT_OCTETS:
1075 /* max. 27 bytes, administratively assigned or unknown format */
1076 if (len_remain<=27) {
1077 proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, len_remain, FALSE);
1086 proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC3411>");
1093 static void set_ue_keys(snmp_ue_assoc_t* n ) {
1094 guint key_size = n->user.authModel->key_size;
1096 n->user.authKey.data = se_alloc(key_size);
1097 n->user.authKey.len = key_size;
1098 n->user.authModel->pass2key(n->user.authPassword.data,
1099 n->user.authPassword.len,
1102 n->user.authKey.data);
1104 n->user.privKey.data = se_alloc(key_size);
1105 n->user.privKey.len = key_size;
1106 n->user.authModel->pass2key(n->user.privPassword.data,
1107 n->user.privPassword.len,
1110 n->user.privKey.data);
1113 static snmp_ue_assoc_t* ue_se_dup(snmp_ue_assoc_t* o) {
1114 snmp_ue_assoc_t* d = se_memdup(o,sizeof(snmp_ue_assoc_t));
1116 d->user.authModel = o->user.authModel;
1118 d->user.privProtocol = o->user.privProtocol;
1120 d->user.userName.data = se_memdup(o->user.userName.data,o->user.userName.len);
1121 d->user.userName.len = o->user.userName.len;
1123 d->user.authPassword.data = o->user.authPassword.data ? se_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
1124 d->user.authPassword.len = o->user.authPassword.len;
1126 d->user.privPassword.data = o->user.privPassword.data ? se_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
1127 d->user.privPassword.len = o->user.privPassword.len;
1129 d->engine.len = o->engine.len;
1131 if (d->engine.len) {
1132 d->engine.data = se_memdup(o->engine.data,o->engine.len);
1141 #define CACHE_INSERT(c,a) if (c) { snmp_ue_assoc_t* t = c; c = a; c->next = t; } else { c = a; a->next = NULL; }
1143 static void renew_ue_cache(void) {
1147 localized_ues = NULL;
1148 unlocalized_ues = NULL;
1150 for(i = 0; i < num_ueas; i++) {
1151 snmp_ue_assoc_t* a = ue_se_dup(&(ueas[i]));
1153 if (a->engine.len) {
1154 CACHE_INSERT(localized_ues,a);
1157 CACHE_INSERT(unlocalized_ues,a);
1162 localized_ues = NULL;
1163 unlocalized_ues = NULL;
1168 static snmp_ue_assoc_t* localize_ue( snmp_ue_assoc_t* o, const guint8* engine, guint engine_len ) {
1169 snmp_ue_assoc_t* n = se_memdup(o,sizeof(snmp_ue_assoc_t));
1171 n->engine.data = se_memdup(engine,engine_len);
1172 n->engine.len = engine_len;
1180 #define localized_match(a,u,ul,e,el) \
1181 ( a->user.userName.len == ul \
1182 && a->engine.len == el \
1183 && memcmp( a->user.userName.data, u, (a->user.userName.len < ul) ? a->user.userName.len : ul ) == 0 \
1184 && memcmp( a->engine.data, e, (a->engine.len < el) ? a->engine.len : el ) == 0 )
1186 #define unlocalized_match(a,u,l) \
1187 ( a->user.userName.len == l && memcmp( a->user.userName.data, u, a->user.userName.len < l ? a->user.userName.len : l) == 0 )
1189 static snmp_ue_assoc_t* get_user_assoc(tvbuff_t* engine_tvb, tvbuff_t* user_tvb) {
1190 static snmp_ue_assoc_t* a;
1191 guint given_username_len;
1192 guint8* given_username;
1193 guint given_engine_len;
1194 guint8* given_engine;
1196 if ( ! (localized_ues || unlocalized_ues ) ) return NULL;
1198 if (! ( user_tvb && engine_tvb ) ) return NULL;
1200 given_username_len = tvb_length_remaining(user_tvb,0);
1201 given_username = ep_tvb_memdup(user_tvb,0,-1);
1202 given_engine_len = tvb_length_remaining(engine_tvb,0);
1203 given_engine = ep_tvb_memdup(engine_tvb,0,-1);
1205 for (a = localized_ues; a; a = a->next) {
1206 if ( localized_match(a, given_username, given_username_len, given_engine, given_engine_len) ) {
1211 for (a = unlocalized_ues; a; a = a->next) {
1212 if ( unlocalized_match(a, given_username, given_username_len) ) {
1213 snmp_ue_assoc_t* n = localize_ue( a, given_engine, given_engine_len );
1214 CACHE_INSERT(localized_ues,n);
1222 static gboolean snmp_usm_auth_md5(snmp_usm_params_t* p, guint8** calc_auth_p, guint* calc_auth_len_p, gchar const** error) {
1235 *error = "No Authenticator";
1239 key = p->user_assoc->user.authKey.data;
1240 key_len = p->user_assoc->user.authKey.len;
1243 *error = "User has no authKey";
1248 auth_len = tvb_length_remaining(p->auth_tvb,0);
1250 if (auth_len != 12) {
1251 *error = "Authenticator length wrong";
1255 msg_len = tvb_length_remaining(p->msg_tvb,0);
1256 msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
1259 auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
1261 start = p->auth_offset - p->start_offset;
1262 end = start + auth_len;
1264 /* fill the authenticator with zeros */
1265 for ( i = start ; i < end ; i++ ) {
1269 calc_auth = ep_alloc(16);
1271 md5_hmac(msg, msg_len, key, key_len, calc_auth);
1273 if (calc_auth_p) *calc_auth_p = calc_auth;
1274 if (calc_auth_len_p) *calc_auth_len_p = 12;
1276 return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
1280 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_) {
1293 *error = "No Authenticator";
1297 key = p->user_assoc->user.authKey.data;
1298 key_len = p->user_assoc->user.authKey.len;
1301 *error = "User has no authKey";
1306 auth_len = tvb_length_remaining(p->auth_tvb,0);
1309 if (auth_len != 12) {
1310 *error = "Authenticator length wrong";
1314 msg_len = tvb_length_remaining(p->msg_tvb,0);
1315 msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
1317 auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
1319 start = p->auth_offset - p->start_offset;
1320 end = start + auth_len;
1322 /* fill the authenticator with zeros */
1323 for ( i = start ; i < end ; i++ ) {
1327 calc_auth = ep_alloc(20);
1329 sha1_hmac(key, key_len, msg, msg_len, calc_auth);
1331 if (calc_auth_p) *calc_auth_p = calc_auth;
1332 if (calc_auth_len_p) *calc_auth_len_p = 12;
1334 return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
1337 static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData _U_, gchar const** error _U_) {
1338 #ifdef HAVE_LIBGCRYPT
1340 gcry_cipher_hd_t hd = NULL;
1343 guint8* des_key = p->user_assoc->user.privKey.data; /* first 8 bytes */
1344 guint8* pre_iv = &(p->user_assoc->user.privKey.data[8]); /* last 8 bytes */
1349 tvbuff_t* clear_tvb;
1354 salt_len = tvb_length_remaining(p->priv_tvb,0);
1356 if (salt_len != 8) {
1357 *error = "decryptionError: msgPrivacyParameters length != 8";
1361 salt = ep_tvb_memdup(p->priv_tvb,0,salt_len);
1364 The resulting "salt" is XOR-ed with the pre-IV to obtain the IV.
1366 for (i=0; i<8; i++) {
1367 iv[i] = pre_iv[i] ^ salt[i];
1370 cryptgrm_len = tvb_length_remaining(encryptedData,0);
1372 if (cryptgrm_len % 8) {
1373 *error = "decryptionError: the length of the encrypted data is not a mutiple of 8 octets";
1377 cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
1379 cleartext = ep_alloc(cryptgrm_len);
1381 err = gcry_cipher_open(&hd, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_CBC, 0);
1382 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1384 err = gcry_cipher_setiv(hd, iv, 8);
1385 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1387 err = gcry_cipher_setkey(hd,des_key,8);
1388 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1390 err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1391 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1393 gcry_cipher_close(hd);
1395 clear_tvb = tvb_new_real_data(cleartext, cryptgrm_len, cryptgrm_len);
1400 *error = (void*)gpg_strerror(err);
1401 if (hd) gcry_cipher_close(hd);
1404 *error = "libgcrypt not present, cannot decrypt";
1409 static tvbuff_t* snmp_usm_priv_aes(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData _U_, gchar const** error _U_) {
1410 #ifdef HAVE_LIBGCRYPT
1412 gcry_cipher_hd_t hd = NULL;
1415 guint8* aes_key = p->user_assoc->user.privKey.data; /* first 16 bytes */
1420 tvbuff_t* clear_tvb;
1422 priv_len = tvb_length_remaining(p->priv_tvb,0);
1424 if (priv_len != 8) {
1425 *error = "decryptionError: msgPrivacyParameters length != 8";
1429 iv[0] = (p->boots & 0xff000000) >> 24;
1430 iv[1] = (p->boots & 0x00ff0000) >> 16;
1431 iv[2] = (p->boots & 0x0000ff00) >> 8;
1432 iv[3] = (p->boots & 0x000000ff);
1433 iv[4] = (p->time & 0xff000000) >> 24;
1434 iv[5] = (p->time & 0x00ff0000) >> 16;
1435 iv[6] = (p->time & 0x0000ff00) >> 8;
1436 iv[7] = (p->time & 0x000000ff);
1437 tvb_memcpy(p->priv_tvb,&(iv[8]),0,8);
1439 cryptgrm_len = tvb_length_remaining(encryptedData,0);
1440 cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
1442 cleartext = ep_alloc(cryptgrm_len);
1444 err = gcry_cipher_open(&hd, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_CFB, 0);
1445 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1447 err = gcry_cipher_setiv(hd, iv, 16);
1448 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1450 err = gcry_cipher_setkey(hd,aes_key,16);
1451 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1453 err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1454 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1456 gcry_cipher_close(hd);
1458 clear_tvb = tvb_new_real_data(cleartext, cryptgrm_len, cryptgrm_len);
1463 *error = (void*)gpg_strerror(err);
1464 if (hd) gcry_cipher_close(hd);
1467 *error = "libgcrypt not present, cannot decrypt";
1473 gboolean check_ScopedPdu(tvbuff_t* tvb) {
1478 int hoffset, eoffset;
1481 offset = get_ber_identifier(tvb, 0, &class, &pc, &tag);
1482 offset = get_ber_length(tvb, offset, NULL, NULL);
1484 if ( ! (((class!=BER_CLASS_APP) && (class!=BER_CLASS_PRI) )
1485 && ( (!pc) || (class!=BER_CLASS_UNI) || (tag!=BER_UNI_TAG_ENUMERATED) )
1488 if((tvb_get_guint8(tvb, offset)==0)&&(tvb_get_guint8(tvb, offset+1)==0))
1493 offset = get_ber_identifier(tvb, offset, &class, &pc, &tag);
1494 offset = get_ber_length(tvb, offset, &len, NULL);
1495 eoffset = offset + len;
1497 if (eoffset <= hoffset) return FALSE;
1499 if ((class!=BER_CLASS_APP)&&(class!=BER_CLASS_PRI))
1500 if( (class!=BER_CLASS_UNI)
1501 ||((tag<BER_UNI_TAG_NumericString)&&(tag!=BER_UNI_TAG_OCTETSTRING)&&(tag!=BER_UNI_TAG_UTF8String)) )
1509 /*--- Included file: packet-snmp-fn.c ---*/
1510 #line 1 "packet-snmp-fn.c"
1515 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_) {
1517 tvbuff_t* param_tvb = NULL;
1521 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, ¶m_tvb);
1523 if (display_oid && param_tvb) {
1524 len = tvb_length_remaining (param_tvb, 0);
1525 name = oid_resolved_from_encoded(tvb_get_ptr(param_tvb, 0, len), len);
1526 if (name && check_col(actx->pinfo->cinfo, COL_INFO)) {
1527 col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", name);
1539 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_) {
1540 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1549 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_) {
1550 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1551 hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_OCTET_STRING_SIZE_4);
1559 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_) {
1560 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1569 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_) {
1570 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1571 hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_INTEGER_0_4294967295);
1579 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_) {
1580 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1589 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_) {
1590 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
1596 static const value_string snmp_Version_vals[] = {
1606 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_) {
1607 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1616 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_) {
1617 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1626 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_) {
1627 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1634 static const value_string snmp_T_error_status_vals[] = {
1637 { 2, "noSuchName" },
1643 { 8, "wrongLength" },
1644 { 9, "wrongEncoding" },
1645 { 10, "wrongValue" },
1646 { 11, "noCreation" },
1647 { 12, "inconsistentValue" },
1648 { 13, "resourceUnavailable" },
1649 { 14, "commitFailed" },
1650 { 15, "undoFailed" },
1651 { 16, "authorizationError" },
1652 { 17, "notWritable" },
1653 { 18, "inconsistentName" },
1659 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_) {
1660 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1669 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_) {
1670 offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
1677 static const ber_sequence_t VarBindList_sequence_of[1] = {
1678 { &hf_snmp_VarBindList_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBind },
1682 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_) {
1683 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
1684 VarBindList_sequence_of, hf_index, ett_snmp_VarBindList);
1690 static const ber_sequence_t PDU_sequence[] = {
1691 { &hf_snmp_request_id , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1692 { &hf_snmp_error_status , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_error_status },
1693 { &hf_snmp_error_index , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1694 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1695 { NULL, 0, 0, 0, NULL }
1699 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_) {
1700 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1701 PDU_sequence, hf_index, ett_snmp_PDU);
1709 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_) {
1710 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1711 hf_index, BER_CLASS_CON, 0, TRUE, dissect_snmp_PDU);
1719 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_) {
1720 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1721 hf_index, BER_CLASS_CON, 1, TRUE, dissect_snmp_PDU);
1729 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_) {
1730 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1731 hf_index, BER_CLASS_CON, 2, TRUE, dissect_snmp_PDU);
1739 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_) {
1740 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1741 hf_index, BER_CLASS_CON, 3, TRUE, dissect_snmp_PDU);
1747 static const value_string snmp_T_generic_trap_vals[] = {
1752 { 4, "authenticationFailure" },
1753 { 5, "egpNeighborLoss" },
1754 { 6, "enterpriseSpecific" },
1760 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_) {
1761 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1768 static const ber_sequence_t Trap_PDU_U_sequence[] = {
1769 { &hf_snmp_enterprise , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_EnterpriseOID },
1770 { &hf_snmp_agent_addr , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_NetworkAddress },
1771 { &hf_snmp_generic_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_generic_trap },
1772 { &hf_snmp_specific_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1773 { &hf_snmp_time_stamp , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_TimeTicks },
1774 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1775 { NULL, 0, 0, 0, NULL }
1779 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_) {
1780 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1781 Trap_PDU_U_sequence, hf_index, ett_snmp_Trap_PDU_U);
1789 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_) {
1790 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1791 hf_index, BER_CLASS_CON, 4, TRUE, dissect_snmp_Trap_PDU_U);
1799 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_) {
1800 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1807 static const ber_sequence_t BulkPDU_sequence[] = {
1808 { &hf_snmp_bulkPDU_request_id, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Integer32 },
1809 { &hf_snmp_non_repeaters , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
1810 { &hf_snmp_max_repetitions, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
1811 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1812 { NULL, 0, 0, 0, NULL }
1816 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_) {
1817 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1818 BulkPDU_sequence, hf_index, ett_snmp_BulkPDU);
1826 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_) {
1827 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1828 hf_index, BER_CLASS_CON, 5, TRUE, dissect_snmp_BulkPDU);
1836 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_) {
1837 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1838 hf_index, BER_CLASS_CON, 6, TRUE, dissect_snmp_PDU);
1846 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_) {
1847 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1848 hf_index, BER_CLASS_CON, 7, TRUE, dissect_snmp_PDU);
1856 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_) {
1857 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1858 hf_index, BER_CLASS_CON, 8, TRUE, dissect_snmp_PDU);
1864 static const value_string snmp_PDUs_vals[] = {
1865 { 0, "get-request" },
1866 { 1, "get-next-request" },
1867 { 2, "get-response" },
1868 { 3, "set-request" },
1870 { 5, "getBulkRequest" },
1871 { 6, "informRequest" },
1872 { 7, "sNMPv2-Trap" },
1877 static const ber_choice_t PDUs_choice[] = {
1878 { 0, &hf_snmp_get_request , BER_CLASS_CON, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_GetRequest_PDU },
1879 { 1, &hf_snmp_get_next_request, BER_CLASS_CON, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_GetNextRequest_PDU },
1880 { 2, &hf_snmp_get_response , BER_CLASS_CON, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_GetResponse_PDU },
1881 { 3, &hf_snmp_set_request , BER_CLASS_CON, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_SetRequest_PDU },
1882 { 4, &hf_snmp_trap , BER_CLASS_CON, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_Trap_PDU },
1883 { 5, &hf_snmp_getBulkRequest , BER_CLASS_CON, 5, BER_FLAGS_NOOWNTAG, dissect_snmp_GetBulkRequest_PDU },
1884 { 6, &hf_snmp_informRequest , BER_CLASS_CON, 6, BER_FLAGS_NOOWNTAG, dissect_snmp_InformRequest_PDU },
1885 { 7, &hf_snmp_sNMPv2_Trap , BER_CLASS_CON, 7, BER_FLAGS_NOOWNTAG, dissect_snmp_SNMPv2_Trap_PDU },
1886 { 8, &hf_snmp_report , BER_CLASS_CON, 8, BER_FLAGS_NOOWNTAG, dissect_snmp_Report_PDU },
1887 { 0, NULL, 0, 0, 0, NULL }
1891 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_) {
1895 if (check_col(actx->pinfo->cinfo, COL_INFO))
1896 col_clear(actx->pinfo->cinfo, COL_INFO);
1898 offset = dissect_ber_choice(actx, tree, tvb, offset,
1899 PDUs_choice, hf_index, ett_snmp_PDUs,
1902 if( (pdu_type!=-1) && snmp_PDUs_vals[pdu_type].strptr ){
1903 if (check_col(actx->pinfo->cinfo, COL_INFO))
1904 col_prepend_fstr(actx->pinfo->cinfo, COL_INFO, "%s", snmp_PDUs_vals[pdu_type].strptr);
1913 static const ber_sequence_t Message_sequence[] = {
1914 { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
1915 { &hf_snmp_community , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
1916 { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
1917 { NULL, 0, 0, 0, NULL }
1921 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_) {
1922 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1923 Message_sequence, hf_index, ett_snmp_Message);
1929 static const value_string snmp_T_datav2u_vals[] = {
1935 static const ber_choice_t T_datav2u_choice[] = {
1936 { 0, &hf_snmp_v2u_plaintext , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
1937 { 1, &hf_snmp_encrypted , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
1938 { 0, NULL, 0, 0, 0, NULL }
1942 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_) {
1943 offset = dissect_ber_choice(actx, tree, tvb, offset,
1944 T_datav2u_choice, hf_index, ett_snmp_T_datav2u,
1951 static const ber_sequence_t Messagev2u_sequence[] = {
1952 { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
1953 { &hf_snmp_parameters , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
1954 { &hf_snmp_datav2u , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_T_datav2u },
1955 { NULL, 0, 0, 0, NULL }
1959 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_) {
1960 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1961 Messagev2u_sequence, hf_index, ett_snmp_Messagev2u);
1969 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_) {
1971 tvbuff_t* param_tvb = NULL;
1973 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1976 proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
1977 dissect_snmp_engineid(engine_tree, param_tvb, 0, tvb_length_remaining(param_tvb,0));
1988 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_) {
1991 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1993 if (usm_p.engine_tvb) {
1994 proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
1995 dissect_snmp_engineid(engine_tree, usm_p.engine_tvb, 0, tvb_length_remaining(usm_p.engine_tvb,0));
2006 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_) {
2007 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2016 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_) {
2017 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2026 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_) {
2027 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2036 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_) {
2038 offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_index, &usm_p.auth_tvb);
2039 if (usm_p.auth_tvb) {
2040 usm_p.auth_item = actx->created_item;
2041 usm_p.auth_offset = offset_from_real_beginning(usm_p.auth_tvb,0);
2051 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_) {
2052 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2059 static const ber_sequence_t UsmSecurityParameters_sequence[] = {
2060 { &hf_snmp_msgAuthoritativeEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineID },
2061 { &hf_snmp_msgAuthoritativeEngineBoots, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineBoots },
2062 { &hf_snmp_msgAuthoritativeEngineTime, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineTime },
2063 { &hf_snmp_msgUserName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgUserName },
2064 { &hf_snmp_msgAuthenticationParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthenticationParameters },
2065 { &hf_snmp_msgPrivacyParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgPrivacyParameters },
2066 { NULL, 0, 0, 0, NULL }
2070 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_) {
2071 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2072 UsmSecurityParameters_sequence, hf_index, ett_snmp_UsmSecurityParameters);
2080 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_) {
2081 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2090 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_) {
2091 #line 213 "snmp.cnf"
2092 tvbuff_t *parameter_tvb = NULL;
2094 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2098 guint8 v3_flags = tvb_get_guint8(parameter_tvb, 0);
2099 proto_tree* flags_tree = proto_item_add_subtree(actx->created_item,ett_msgFlags);
2101 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_report, parameter_tvb, 0, 1, FALSE);
2102 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_crypt, parameter_tvb, 0, 1, FALSE);
2103 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_auth, parameter_tvb, 0, 1, FALSE);
2105 usm_p.encrypted = v3_flags & TH_CRYPT ? TRUE : FALSE;
2106 usm_p.authenticated = v3_flags & TH_AUTH ? TRUE : FALSE;
2118 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_) {
2119 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2126 static const ber_sequence_t HeaderData_sequence[] = {
2127 { &hf_snmp_msgID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
2128 { &hf_snmp_msgMaxSize , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_484_2147483647 },
2129 { &hf_snmp_msgFlags , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgFlags },
2130 { &hf_snmp_msgSecurityModel, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityModel },
2131 { NULL, 0, 0, 0, NULL }
2135 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_) {
2136 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2137 HeaderData_sequence, hf_index, ett_snmp_HeaderData);
2145 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_) {
2146 #line 156 "snmp.cnf"
2148 switch(MsgSecurityModel){
2149 case SNMP_SEC_USM: /* 3 */
2150 offset = dissect_snmp_UsmSecurityParameters(FALSE, tvb, offset+2, actx, tree, -1);
2151 usm_p.user_assoc = get_user_assoc(usm_p.engine_tvb, usm_p.user_tvb);
2153 case SNMP_SEC_ANY: /* 0 */
2154 case SNMP_SEC_V1: /* 1 */
2155 case SNMP_SEC_V2C: /* 2 */
2157 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2169 static const ber_sequence_t ScopedPDU_sequence[] = {
2170 { &hf_snmp_contextEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_SnmpEngineID },
2171 { &hf_snmp_contextName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2172 { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
2173 { NULL, 0, 0, 0, NULL }
2177 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_) {
2178 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2179 ScopedPDU_sequence, hf_index, ett_snmp_ScopedPDU);
2187 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_) {
2188 #line 103 "snmp.cnf"
2189 tvbuff_t* crypt_tvb;
2190 offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_snmp_encryptedPDU, &crypt_tvb);
2192 if( usm_p.encrypted && crypt_tvb
2194 && usm_p.user_assoc->user.privProtocol ) {
2196 const gchar* error = NULL;
2197 proto_tree* encryptedpdu_tree = proto_item_add_subtree(actx->created_item,ett_encryptedPDU);
2198 tvbuff_t* cleartext_tvb = usm_p.user_assoc->user.privProtocol(&usm_p, crypt_tvb, &error );
2200 if (! cleartext_tvb) {
2201 proto_item* cause = proto_tree_add_text(encryptedpdu_tree, crypt_tvb, 0, -1,
2202 "Failed to decrypt encryptedPDU: %s", error);
2204 expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
2205 "Failed to decrypt encryptedPDU: %s", error);
2207 if (check_col(actx->pinfo->cinfo, COL_INFO))
2208 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Failed to decrypt");
2212 proto_item* decrypted_item;
2213 proto_tree* decrypted_tree;
2215 if (! check_ScopedPdu(cleartext_tvb)) {
2216 proto_item* cause = proto_tree_add_text(encryptedpdu_tree, cleartext_tvb, 0, -1,
2217 "Decrypted data not formatted as expected, wrong key?");
2219 expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
2220 "Decrypted data not formatted as expected");
2222 if (check_col(actx->pinfo->cinfo, COL_INFO))
2223 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Decrypted data not formatted as expected");
2229 add_new_data_source(actx->pinfo, cleartext_tvb, "Decrypted ScopedPDU");
2230 tvb_set_child_real_data_tvbuff(tvb, cleartext_tvb);
2232 decrypted_item = proto_tree_add_item(encryptedpdu_tree, hf_snmp_decryptedPDU,cleartext_tvb,0,-1,FALSE);
2233 decrypted_tree = proto_item_add_subtree(decrypted_item,ett_decrypted);
2234 dissect_snmp_ScopedPDU(FALSE, cleartext_tvb, 0, actx, decrypted_tree, -1);
2237 if (check_col(actx->pinfo->cinfo, COL_INFO))
2238 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: privKey Unknown");
2247 static const value_string snmp_ScopedPduData_vals[] = {
2249 { 1, "encryptedPDU" },
2253 static const ber_choice_t ScopedPduData_choice[] = {
2254 { 0, &hf_snmp_plaintext , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_ScopedPDU },
2255 { 1, &hf_snmp_encryptedPDU , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_encryptedPDU },
2256 { 0, NULL, 0, 0, 0, NULL }
2260 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_) {
2261 offset = dissect_ber_choice(actx, tree, tvb, offset,
2262 ScopedPduData_choice, hf_index, ett_snmp_ScopedPduData,
2269 static const ber_sequence_t SNMPv3Message_sequence[] = {
2270 { &hf_snmp_msgVersion , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
2271 { &hf_snmp_msgGlobalData , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_HeaderData },
2272 { &hf_snmp_msgSecurityParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityParameters },
2273 { &hf_snmp_msgData , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_ScopedPduData },
2274 { NULL, 0, 0, 0, NULL }
2278 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_) {
2279 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2280 SNMPv3Message_sequence, hf_index, ett_snmp_SNMPv3Message);
2282 #line 171 "snmp.cnf"
2284 if( usm_p.authenticated
2286 && usm_p.user_assoc->user.authModel ) {
2287 const gchar* error = NULL;
2288 proto_item* authen_item;
2289 proto_tree* authen_tree = proto_item_add_subtree(usm_p.auth_item,ett_authParameters);
2291 guint calc_auth_len;
2293 usm_p.authOK = usm_p.user_assoc->user.authModel->authenticate( &usm_p, &calc_auth, &calc_auth_len, &error );
2296 authen_item = proto_tree_add_text(authen_tree,tvb,0,0,"Error while verifying Messsage authenticity: %s", error);
2297 PROTO_ITEM_SET_GENERATED(authen_item);
2298 expert_add_info_format( actx->pinfo, authen_item, PI_MALFORMED, PI_ERROR, "Error while verifying Messsage authenticity: %s", error );
2303 authen_item = proto_tree_add_boolean(authen_tree, hf_snmp_msgAuthentication, tvb, 0, 0, usm_p.authOK);
2304 PROTO_ITEM_SET_GENERATED(authen_item);
2307 msg = "SNMP Authentication OK";
2310 gchar* calc_auth_str = bytestring_to_str(calc_auth,calc_auth_len,' ');
2311 proto_item_append_text(authen_item, " calculated = %s", calc_auth_str);
2312 msg = "SNMP Authentication Error";
2316 expert_add_info_format( actx->pinfo, authen_item, PI_CHECKSUM, severity, "%s", msg );
2325 static const value_string snmp_T_smux_version_vals[] = {
2332 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_) {
2333 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2342 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_) {
2343 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
2351 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_) {
2352 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2359 static const ber_sequence_t SimpleOpen_U_sequence[] = {
2360 { &hf_snmp_smux_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_smux_version },
2361 { &hf_snmp_identity , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_OBJECT_IDENTIFIER },
2362 { &hf_snmp_description , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_DisplayString },
2363 { &hf_snmp_password , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2364 { NULL, 0, 0, 0, NULL }
2368 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_) {
2369 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2370 SimpleOpen_U_sequence, hf_index, ett_snmp_SimpleOpen_U);
2378 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_) {
2379 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2380 hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_SimpleOpen_U);
2386 static const value_string snmp_OpenPDU_vals[] = {
2387 { 0, "smux-simple" },
2391 static const ber_choice_t OpenPDU_choice[] = {
2392 { 0, &hf_snmp_smux_simple , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_SimpleOpen },
2393 { 0, NULL, 0, 0, 0, NULL }
2397 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_) {
2398 offset = dissect_ber_choice(actx, tree, tvb, offset,
2399 OpenPDU_choice, hf_index, ett_snmp_OpenPDU,
2406 static const value_string snmp_ClosePDU_U_vals[] = {
2408 { 1, "unsupportedVersion" },
2409 { 2, "packetFormat" },
2410 { 3, "protocolError" },
2411 { 4, "internalError" },
2412 { 5, "authenticationFailure" },
2418 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_) {
2419 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2428 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_) {
2429 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2430 hf_index, BER_CLASS_APP, 1, TRUE, dissect_snmp_ClosePDU_U);
2438 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_) {
2439 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2446 static const value_string snmp_T_operation_vals[] = {
2455 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_) {
2456 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2463 static const ber_sequence_t RReqPDU_U_sequence[] = {
2464 { &hf_snmp_subtree , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_ObjectName },
2465 { &hf_snmp_priority , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_M1_2147483647 },
2466 { &hf_snmp_operation , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_operation },
2467 { NULL, 0, 0, 0, NULL }
2471 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_) {
2472 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2473 RReqPDU_U_sequence, hf_index, ett_snmp_RReqPDU_U);
2481 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_) {
2482 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2483 hf_index, BER_CLASS_APP, 2, TRUE, dissect_snmp_RReqPDU_U);
2489 static const value_string snmp_RRspPDU_U_vals[] = {
2496 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_) {
2497 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2506 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_) {
2507 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2508 hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_RRspPDU_U);
2514 static const value_string snmp_RegisterResponse_vals[] = {
2520 static const ber_choice_t RegisterResponse_choice[] = {
2521 { 0, &hf_snmp_rRspPDU , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_RRspPDU },
2522 { 1, &hf_snmp_pDUs , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
2523 { 0, NULL, 0, 0, 0, NULL }
2527 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_) {
2528 offset = dissect_ber_choice(actx, tree, tvb, offset,
2529 RegisterResponse_choice, hf_index, ett_snmp_RegisterResponse,
2536 static const value_string snmp_SOutPDU_U_vals[] = {
2544 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_) {
2545 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2554 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_) {
2555 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2556 hf_index, BER_CLASS_APP, 4, TRUE, dissect_snmp_SOutPDU_U);
2562 static const value_string snmp_SMUX_PDUs_vals[] = {
2565 { 2, "registerRequest" },
2566 { 3, "registerResponse" },
2567 { 4, "commitOrRollback" },
2571 static const ber_choice_t SMUX_PDUs_choice[] = {
2572 { 0, &hf_snmp_open , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_OpenPDU },
2573 { 1, &hf_snmp_close , BER_CLASS_APP, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_ClosePDU },
2574 { 2, &hf_snmp_registerRequest, BER_CLASS_APP, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_RReqPDU },
2575 { 3, &hf_snmp_registerResponse, BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_RegisterResponse },
2576 { 4, &hf_snmp_commitOrRollback, BER_CLASS_APP, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_SOutPDU },
2577 { 0, NULL, 0, 0, 0, NULL }
2581 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_) {
2582 offset = dissect_ber_choice(actx, tree, tvb, offset,
2583 SMUX_PDUs_choice, hf_index, ett_snmp_SMUX_PDUs,
2591 static void dissect_SMUX_PDUs_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
2592 asn1_ctx_t asn1_ctx;
2593 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
2594 dissect_snmp_SMUX_PDUs(FALSE, tvb, 0, &asn1_ctx, tree, hf_snmp_SMUX_PDUs_PDU);
2598 /*--- End of included file: packet-snmp-fn.c ---*/
2599 #line 1407 "packet-snmp-template.c"
2603 dissect_snmp_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
2604 proto_tree *tree, int proto, gint ett, gboolean is_tcp)
2607 guint length_remaining;
2609 gboolean pc, ind = 0;
2612 guint message_length;
2613 int start_offset = offset;
2614 guint32 version = 0;
2616 proto_tree *snmp_tree = NULL;
2617 proto_item *item = NULL;
2618 asn1_ctx_t asn1_ctx;
2619 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
2622 usm_p.msg_tvb = tvb;
2623 usm_p.start_offset = offset_from_real_beginning(tvb,0) ;
2624 usm_p.engine_tvb = NULL;
2625 usm_p.user_tvb = NULL;
2626 usm_p.auth_item = NULL;
2627 usm_p.auth_tvb = NULL;
2628 usm_p.auth_offset = 0;
2629 usm_p.priv_tvb = NULL;
2630 usm_p.user_assoc = NULL;
2631 usm_p.authenticated = FALSE;
2632 usm_p.encrypted = FALSE;
2635 usm_p.authOK = FALSE;
2638 * This will throw an exception if we don't have any data left.
2639 * That's what we want. (See "tcp_dissect_pdus()", which is
2640 * similar, but doesn't have to deal with ASN.1.
2641 * XXX - can we make "tcp_dissect_pdus()" provide enough
2642 * information to the "get_pdu_len" routine so that we could
2643 * have that routine deal with ASN.1, and just use
2644 * "tcp_dissect_pdus()"?)
2646 length_remaining = tvb_ensure_length_remaining(tvb, offset);
2648 /* NOTE: we have to parse the message piece by piece, since the
2649 * capture length may be less than the message length: a 'global'
2650 * parsing is likely to fail.
2654 * If this is SNMP-over-TCP, we might have to do reassembly
2655 * in order to read the "Sequence Of" header.
2657 if (is_tcp && snmp_desegment && pinfo->can_desegment) {
2659 * This is TCP, and we should, and can, do reassembly.
2661 * Is the "Sequence Of" header split across segment
2662 * boundaries? We requre at least 6 bytes for the
2663 * header, which allows for a 4-byte length (ASN.1
2666 if (length_remaining < 6) {
2667 pinfo->desegment_offset = offset;
2668 pinfo->desegment_len = 6 - length_remaining;
2671 * Return 0, which means "I didn't dissect anything
2672 * because I don't have enough data - we need
2680 * OK, try to read the "Sequence Of" header; this gets the total
2681 * length of the SNMP message.
2683 /* Set tree to 0 to not display internakl BER fields if option used.*/
2684 offset = dissect_ber_identifier(pinfo, 0, tvb, offset, &class, &pc, &tag);
2685 offset = dissect_ber_length(pinfo, 0, tvb, offset, &len, &ind);
2687 message_length = len + 2;
2688 offset = dissect_ber_integer(FALSE, &asn1_ctx, 0, tvb, offset, -1, &version);
2692 * If this is SNMP-over-TCP, we might have to do reassembly
2693 * to get all of this message.
2695 if (is_tcp && snmp_desegment && pinfo->can_desegment) {
2697 * Yes - is the message split across segment boundaries?
2699 if (length_remaining < message_length) {
2701 * Yes. Tell the TCP dissector where the data
2702 * for this message starts in the data it handed
2703 * us, and how many more bytes we need, and
2706 pinfo->desegment_offset = start_offset;
2707 pinfo->desegment_len =
2708 message_length - length_remaining;
2711 * Return 0, which means "I didn't dissect anything
2712 * because I don't have enough data - we need
2719 next_tvb_init(&var_list);
2721 if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
2722 col_set_str(pinfo->cinfo, COL_PROTOCOL,
2723 proto_get_protocol_short_name(find_protocol_by_id(proto)));
2727 item = proto_tree_add_item(tree, proto, tvb, offset,
2728 message_length, FALSE);
2729 snmp_tree = proto_item_add_subtree(item, ett);
2735 offset = dissect_snmp_Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2738 offset = dissect_snmp_Messagev2u(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2742 offset = dissect_snmp_SNMPv3Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2746 * Return the length remaining in the tvbuff, so
2747 * if this is SNMP-over-TCP, our caller thinks there's
2748 * nothing left to dissect.
2750 proto_tree_add_text(snmp_tree, tvb, offset, -1,"Unknown version");
2751 return length_remaining;
2755 next_tvb_call(&var_list, pinfo, tree, NULL, data_handle);
2761 dissect_snmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2763 conversation_t *conversation;
2772 * See if this looks like SNMP or not. if not, return 0 so
2773 * wireshark can try som other dissector instead.
2775 /* All SNMP packets are BER encoded and consist of a SEQUENCE
2776 * that spans the entire PDU. The first item is an INTEGER that
2777 * has the values 0-2 (version 1-3).
2778 * if not it is not snmp.
2780 /* SNMP starts with a SEQUENCE */
2781 offset = get_ber_identifier(tvb, 0, &tmp_class, &tmp_pc, &tmp_tag);
2782 if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_SEQUENCE)){
2785 /* then comes a length which spans the rest of the tvb */
2786 offset = get_ber_length(tvb, offset, &tmp_length, &tmp_ind);
2787 if(tmp_length!=(guint32)tvb_reported_length_remaining(tvb, offset)){
2790 /* then comes an INTEGER (version)*/
2791 offset = get_ber_identifier(tvb, offset, &tmp_class, &tmp_pc, &tmp_tag);
2792 if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_INTEGER)){
2795 /* do we need to test that version is 0 - 2 (version1-3) ? */
2799 * The first SNMP packet goes to the SNMP port; the second one
2800 * may come from some *other* port, but goes back to the same
2801 * IP address and port as the ones from which the first packet
2802 * came; all subsequent packets presumably go between those two
2803 * IP addresses and ports.
2805 * If this packet went to the SNMP port, we check to see if
2806 * there's already a conversation with one address/port pair
2807 * matching the source IP address and port of this packet,
2808 * the other address matching the destination IP address of this
2809 * packet, and any destination port.
2811 * If not, we create one, with its address 1/port 1 pair being
2812 * the source address/port of this packet, its address 2 being
2813 * the destination address of this packet, and its port 2 being
2814 * wildcarded, and give it the SNMP dissector as a dissector.
2816 if (pinfo->destport == UDP_PORT_SNMP) {
2817 conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
2818 pinfo->srcport, 0, NO_PORT_B);
2819 if( (conversation == NULL) || (conversation->dissector_handle!=snmp_handle) ){
2820 conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
2821 pinfo->srcport, 0, NO_PORT2);
2822 conversation_set_dissector(conversation, snmp_handle);
2826 return dissect_snmp_pdu(tvb, 0, pinfo, tree, proto_snmp, ett_snmp, FALSE);
2829 dissect_snmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2834 while (tvb_reported_length_remaining(tvb, offset) > 0) {
2835 message_len = dissect_snmp_pdu(tvb, 0, pinfo, tree,
2836 proto_snmp, ett_snmp, TRUE);
2837 if (message_len == 0) {
2839 * We don't have all the data for that message,
2840 * so we need to do desegmentation;
2841 * "dissect_snmp_pdu()" has set that up.
2845 offset += message_len;
2850 dissect_smux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2852 proto_tree *smux_tree = NULL;
2853 proto_item *item = NULL;
2855 next_tvb_init(&var_list);
2857 if (check_col(pinfo->cinfo, COL_PROTOCOL))
2858 col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMUX");
2861 item = proto_tree_add_item(tree, proto_smux, tvb, 0, -1, FALSE);
2862 smux_tree = proto_item_add_subtree(item, ett_smux);
2865 dissect_SMUX_PDUs_PDU(tvb, pinfo, tree);
2870 MD5 Password to Key Algorithm
2873 static void snmp_usm_password_to_key_md5(const guint8 *password,
2875 const guint8 *engineID,
2879 guint8 *cp, password_buf[64];
2880 guint32 password_index = 0;
2881 guint32 count = 0, i;
2883 md5_init(&MD); /* initialize MD5 */
2885 /**********************************************/
2886 /* Use while loop until we've done 1 Megabyte */
2887 /**********************************************/
2888 while (count < 1048576) {
2890 for (i = 0; i < 64; i++) {
2891 /*************************************************/
2892 /* Take the next octet of the password, wrapping */
2893 /* to the beginning of the password as necessary.*/
2894 /*************************************************/
2895 *cp++ = password[password_index++ % passwordlen];
2897 md5_append(&MD, password_buf, 64);
2900 md5_finish(&MD, key1); /* tell MD5 we're done */
2902 /*****************************************************/
2903 /* Now localize the key with the engineID and pass */
2904 /* through MD5 to produce final key */
2905 /* May want to ensure that engineLength <= 32, */
2906 /* otherwise need to use a buffer larger than 64 */
2907 /*****************************************************/
2910 md5_append(&MD, key1, 16);
2911 md5_append(&MD, engineID, engineLength);
2912 md5_append(&MD, key1, 16);
2913 md5_finish(&MD, key);
2922 SHA1 Password to Key Algorithm COPIED from RFC 3414 A.2.2
2925 static void snmp_usm_password_to_key_sha1(const guint8 *password,
2927 const guint8 *engineID,
2931 guint8 *cp, password_buf[72];
2932 guint32 password_index = 0;
2933 guint32 count = 0, i;
2935 sha1_starts(&SH); /* initialize SHA */
2937 /**********************************************/
2938 /* Use while loop until we've done 1 Megabyte */
2939 /**********************************************/
2940 while (count < 1048576) {
2942 for (i = 0; i < 64; i++) {
2943 /*************************************************/
2944 /* Take the next octet of the password, wrapping */
2945 /* to the beginning of the password as necessary.*/
2946 /*************************************************/
2947 *cp++ = password[password_index++ % passwordlen];
2949 sha1_update (&SH, password_buf, 64);
2952 sha1_finish(&SH, key);
2954 /*****************************************************/
2955 /* Now localize the key with the engineID and pass */
2956 /* through SHA to produce final key */
2957 /* May want to ensure that engineLength <= 32, */
2958 /* otherwise need to use a buffer larger than 72 */
2959 /*****************************************************/
2960 memcpy(password_buf, key, 20);
2961 memcpy(password_buf+20, engineID, engineLength);
2962 memcpy(password_buf+20+engineLength, key, 20);
2965 sha1_update(&SH, password_buf, 40+engineLength);
2966 sha1_finish(&SH, key);
2971 static void process_prefs(void) {}
2973 static void* snmp_users_copy_cb(void* dest, const void* orig, unsigned len _U_) {
2974 const snmp_ue_assoc_t* o = orig;
2975 snmp_ue_assoc_t* d = dest;
2977 d->auth_model = o->auth_model;
2978 d->user.authModel = auth_models[o->auth_model];
2980 d->priv_proto = o->priv_proto;
2981 d->user.privProtocol = priv_protos[o->priv_proto];
2983 d->user.userName.data = g_memdup(o->user.userName.data,o->user.userName.len);
2984 d->user.userName.len = o->user.userName.len;
2986 d->user.authPassword.data = o->user.authPassword.data ? g_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
2987 d->user.authPassword.len = o->user.authPassword.len;
2989 d->user.privPassword.data = o->user.privPassword.data ? g_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
2990 d->user.privPassword.len = o->user.privPassword.len;
2992 d->engine.len = o->engine.len;
2993 if (o->engine.data) {
2994 d->engine.data = g_memdup(o->engine.data,o->engine.len);
2997 d->user.authKey.data = o->user.authKey.data ? g_memdup(o->user.authKey.data,o->user.authKey.len) : NULL;
2998 d->user.authKey.len = o->user.authKey.len;
3000 d->user.privKey.data = o->user.privKey.data ? g_memdup(o->user.privKey.data,o->user.privKey.len) : NULL;
3001 d->user.privKey.len = o->user.privKey.len;
3006 static void snmp_users_free_cb(void* p) {
3007 snmp_ue_assoc_t* ue = p;
3008 g_free(ue->user.userName.data);
3009 g_free(ue->user.authPassword.data);
3010 g_free(ue->user.privPassword.data);
3011 g_free(ue->user.authKey.data);
3012 g_free(ue->user.privKey.data);
3013 g_free(ue->engine.data);
3016 static void snmp_users_update_cb(void* p _U_, const char** err) {
3017 snmp_ue_assoc_t* ue = p;
3018 GString* es = g_string_new("");
3022 if (! ue->user.userName.len) g_string_append(es,"no userName, ");
3025 g_string_truncate(es,es->len-2);
3026 *err = ep_strdup(es->str);
3029 g_string_free(es,TRUE);
3034 UAT_LSTRING_CB_DEF(snmp_users,userName,snmp_ue_assoc_t,user.userName.data,user.userName.len)
3035 UAT_LSTRING_CB_DEF(snmp_users,authPassword,snmp_ue_assoc_t,user.authPassword.data,user.authPassword.len)
3036 UAT_LSTRING_CB_DEF(snmp_users,privPassword,snmp_ue_assoc_t,user.privPassword.data,user.privPassword.len)
3037 UAT_BUFFER_CB_DEF(snmp_users,engine_id,snmp_ue_assoc_t,engine.data,engine.len)
3038 UAT_VS_DEF(snmp_users,auth_model,snmp_ue_assoc_t,0,"MD5")
3039 UAT_VS_DEF(snmp_users,priv_proto,snmp_ue_assoc_t,0,"DES")
3041 /*--- proto_register_snmp -------------------------------------------*/
3042 void proto_register_snmp(void) {
3043 /* List of fields */
3044 static hf_register_info hf[] = {
3045 { &hf_snmp_v3_flags_auth,
3046 { "Authenticated", "snmp.v3.flags.auth", FT_BOOLEAN, 8,
3047 TFS(&flags_set_truth), TH_AUTH, "", HFILL }},
3048 { &hf_snmp_v3_flags_crypt,
3049 { "Encrypted", "snmp.v3.flags.crypt", FT_BOOLEAN, 8,
3050 TFS(&flags_set_truth), TH_CRYPT, "", HFILL }},
3051 { &hf_snmp_v3_flags_report,
3052 { "Reportable", "snmp.v3.flags.report", FT_BOOLEAN, 8,
3053 TFS(&flags_set_truth), TH_REPORT, "", HFILL }},
3054 { &hf_snmp_engineid_conform, {
3055 "Engine ID Conformance", "snmp.engineid.conform", FT_BOOLEAN, 8,
3056 TFS(&tfs_snmp_engineid_conform), F_SNMP_ENGINEID_CONFORM, "Engine ID RFC3411 Conformance", HFILL }},
3057 { &hf_snmp_engineid_enterprise, {
3058 "Engine Enterprise ID", "snmp.engineid.enterprise", FT_UINT32, BASE_DEC,
3059 VALS(sminmpec_values), 0, "Engine Enterprise ID", HFILL }},
3060 { &hf_snmp_engineid_format, {
3061 "Engine ID Format", "snmp.engineid.format", FT_UINT8, BASE_DEC,
3062 VALS(snmp_engineid_format_vals), 0, "Engine ID Format", HFILL }},
3063 { &hf_snmp_engineid_ipv4, {
3064 "Engine ID Data: IPv4 address", "snmp.engineid.ipv4", FT_IPv4, BASE_NONE,
3065 NULL, 0, "Engine ID Data: IPv4 address", HFILL }},
3066 { &hf_snmp_engineid_ipv6, {
3067 "Engine ID Data: IPv6 address", "snmp.engineid.ipv6", FT_IPv6, BASE_NONE,
3068 NULL, 0, "Engine ID Data: IPv6 address", HFILL }},
3069 { &hf_snmp_engineid_mac, {
3070 "Engine ID Data: MAC address", "snmp.engineid.mac", FT_ETHER, BASE_NONE,
3071 NULL, 0, "Engine ID Data: MAC address", HFILL }},
3072 { &hf_snmp_engineid_text, {
3073 "Engine ID Data: Text", "snmp.engineid.text", FT_STRING, BASE_NONE,
3074 NULL, 0, "Engine ID Data: Text", HFILL }},
3075 { &hf_snmp_engineid_time, {
3076 "Engine ID Data: Time", "snmp.engineid.time", FT_ABSOLUTE_TIME, BASE_NONE,
3077 NULL, 0, "Engine ID Data: Time", HFILL }},
3078 { &hf_snmp_engineid_data, {
3079 "Engine ID Data", "snmp.engineid.data", FT_BYTES, BASE_HEX,
3080 NULL, 0, "Engine ID Data", HFILL }},
3081 { &hf_snmp_msgAuthentication,
3082 { "Authentication", "snmp.v3.auth", FT_BOOLEAN, 8,
3083 TFS(&auth_flags), 0, "", HFILL }},
3084 { &hf_snmp_decryptedPDU, {
3085 "Decrypted ScopedPDU", "snmp.decrypted_pdu", FT_BYTES, BASE_HEX,
3086 NULL, 0, "Decrypted PDU", HFILL }},
3087 { &hf_snmp_noSuchObject, { "noSuchObject", "snmp.noSuchObject", FT_NONE, BASE_NONE, NULL, 0, "", HFILL }},
3088 { &hf_snmp_noSuchInstance, { "noSuchInstance", "snmp.noSuchInstance", FT_NONE, BASE_DEC, NULL, 0, "", HFILL }},
3089 { &hf_snmp_endOfMibView, { "endOfMibView", "snmp.endOfMibView", FT_NONE, BASE_DEC, NULL, 0, "", HFILL }},
3090 { &hf_snmp_unSpecified, { "unSpecified", "snmp.unSpecified", FT_NONE, BASE_DEC, NULL, 0, "", HFILL }},
3092 { &hf_snmp_integer32_value, { "Value (Integer32)", "snmp.value.int", FT_INT64, BASE_DEC, NULL, 0, "", HFILL }},
3093 { &hf_snmp_octetstring_value, { "Value (OctetString)", "snmp.value.octets", FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
3094 { &hf_snmp_oid_value, { "Value (OID)", "snmp.value.oid", FT_OID, BASE_NONE, NULL, 0, "", HFILL }},
3095 { &hf_snmp_null_value, { "Value (Null)", "snmp.value.null", FT_NONE, BASE_NONE, NULL, 0, "", HFILL }},
3096 { &hf_snmp_ipv4_value, { "Value (IpAddress)", "snmp.value.ipv4", FT_IPv4, BASE_NONE, NULL, 0, "", HFILL }},
3097 { &hf_snmp_ipv6_value, { "Value (IpAddress)", "snmp.value.ipv6", FT_IPv6, BASE_NONE, NULL, 0, "", HFILL }},
3098 { &hf_snmp_anyaddress_value, { "Value (IpAddress)", "snmp.value.addr", FT_BYTES, BASE_DEC, NULL, 0, "", HFILL }},
3099 { &hf_snmp_unsigned32_value, { "Value (Unsigned32)", "snmp.value.u32", FT_INT64, BASE_DEC, NULL, 0, "", HFILL }},
3100 { &hf_snmp_gauge32_value, { "Value (Gauge32)", "snmp.value.g32", FT_INT64, BASE_DEC, NULL, 0, "", HFILL }},
3101 { &hf_snmp_unknown_value, { "Value (Unknown)", "snmp.value.unk", FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
3102 { &hf_snmp_counter_value, { "Value (Counter32)", "snmp.value.counter", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3103 { &hf_snmp_big_counter_value, { "Value (Counter64)", "snmp.value.counter", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3104 { &hf_snmp_nsap_value, { "Value (NSAP)", "snmp.value.nsap", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3105 { &hf_snmp_timeticks_value, { "Value (Timeticks)", "snmp.value.timeticks", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3106 { &hf_snmp_opaque_value, { "Value (Opaque)", "snmp.value.opaque", FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
3107 { &hf_snmp_objectname, { "Object Name", "snmp.name", FT_OID, BASE_NONE, NULL, 0, "", HFILL }},
3108 { &hf_snmp_scalar_instance_index, { "Scalar Instance Index", "snmp.name.index", FT_UINT64, BASE_DEC, NULL, 0, "", HFILL }},
3112 /*--- Included file: packet-snmp-hfarr.c ---*/
3113 #line 1 "packet-snmp-hfarr.c"
3114 { &hf_snmp_SMUX_PDUs_PDU,
3115 { "SMUX-PDUs", "snmp.SMUX_PDUs",
3116 FT_UINT32, BASE_DEC, VALS(snmp_SMUX_PDUs_vals), 0,
3117 "snmp.SMUX_PDUs", HFILL }},
3119 { "version", "snmp.version",
3120 FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
3121 "snmp.Version", HFILL }},
3122 { &hf_snmp_community,
3123 { "community", "snmp.community",
3124 FT_STRING, BASE_HEX, NULL, 0,
3125 "snmp.OCTET_STRING", HFILL }},
3127 { "data", "snmp.data",
3128 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3129 "snmp.PDUs", HFILL }},
3130 { &hf_snmp_parameters,
3131 { "parameters", "snmp.parameters",
3132 FT_BYTES, BASE_HEX, NULL, 0,
3133 "snmp.OCTET_STRING", HFILL }},
3135 { "datav2u", "snmp.datav2u",
3136 FT_UINT32, BASE_DEC, VALS(snmp_T_datav2u_vals), 0,
3137 "snmp.T_datav2u", HFILL }},
3138 { &hf_snmp_v2u_plaintext,
3139 { "plaintext", "snmp.plaintext",
3140 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3141 "snmp.PDUs", HFILL }},
3142 { &hf_snmp_encrypted,
3143 { "encrypted", "snmp.encrypted",
3144 FT_BYTES, BASE_HEX, NULL, 0,
3145 "snmp.OCTET_STRING", HFILL }},
3146 { &hf_snmp_msgAuthoritativeEngineID,
3147 { "msgAuthoritativeEngineID", "snmp.msgAuthoritativeEngineID",
3148 FT_BYTES, BASE_HEX, NULL, 0,
3149 "snmp.T_msgAuthoritativeEngineID", HFILL }},
3150 { &hf_snmp_msgAuthoritativeEngineBoots,
3151 { "msgAuthoritativeEngineBoots", "snmp.msgAuthoritativeEngineBoots",
3152 FT_UINT32, BASE_DEC, NULL, 0,
3153 "snmp.T_msgAuthoritativeEngineBoots", HFILL }},
3154 { &hf_snmp_msgAuthoritativeEngineTime,
3155 { "msgAuthoritativeEngineTime", "snmp.msgAuthoritativeEngineTime",
3156 FT_UINT32, BASE_DEC, NULL, 0,
3157 "snmp.T_msgAuthoritativeEngineTime", HFILL }},
3158 { &hf_snmp_msgUserName,
3159 { "msgUserName", "snmp.msgUserName",
3160 FT_STRING, BASE_HEX, NULL, 0,
3161 "snmp.T_msgUserName", HFILL }},
3162 { &hf_snmp_msgAuthenticationParameters,
3163 { "msgAuthenticationParameters", "snmp.msgAuthenticationParameters",
3164 FT_BYTES, BASE_HEX, NULL, 0,
3165 "snmp.T_msgAuthenticationParameters", HFILL }},
3166 { &hf_snmp_msgPrivacyParameters,
3167 { "msgPrivacyParameters", "snmp.msgPrivacyParameters",
3168 FT_BYTES, BASE_HEX, NULL, 0,
3169 "snmp.T_msgPrivacyParameters", HFILL }},
3170 { &hf_snmp_msgVersion,
3171 { "msgVersion", "snmp.msgVersion",
3172 FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
3173 "snmp.Version", HFILL }},
3174 { &hf_snmp_msgGlobalData,
3175 { "msgGlobalData", "snmp.msgGlobalData",
3176 FT_NONE, BASE_NONE, NULL, 0,
3177 "snmp.HeaderData", HFILL }},
3178 { &hf_snmp_msgSecurityParameters,
3179 { "msgSecurityParameters", "snmp.msgSecurityParameters",
3180 FT_BYTES, BASE_HEX, NULL, 0,
3181 "snmp.T_msgSecurityParameters", HFILL }},
3183 { "msgData", "snmp.msgData",
3184 FT_UINT32, BASE_DEC, VALS(snmp_ScopedPduData_vals), 0,
3185 "snmp.ScopedPduData", HFILL }},
3187 { "msgID", "snmp.msgID",
3188 FT_UINT32, BASE_DEC, NULL, 0,
3189 "snmp.INTEGER_0_2147483647", HFILL }},
3190 { &hf_snmp_msgMaxSize,
3191 { "msgMaxSize", "snmp.msgMaxSize",
3192 FT_UINT32, BASE_DEC, NULL, 0,
3193 "snmp.INTEGER_484_2147483647", HFILL }},
3194 { &hf_snmp_msgFlags,
3195 { "msgFlags", "snmp.msgFlags",
3196 FT_BYTES, BASE_HEX, NULL, 0,
3197 "snmp.T_msgFlags", HFILL }},
3198 { &hf_snmp_msgSecurityModel,
3199 { "msgSecurityModel", "snmp.msgSecurityModel",
3200 FT_UINT32, BASE_DEC, VALS(sec_models), 0,
3201 "snmp.T_msgSecurityModel", HFILL }},
3202 { &hf_snmp_plaintext,
3203 { "plaintext", "snmp.plaintext",
3204 FT_NONE, BASE_NONE, NULL, 0,
3205 "snmp.ScopedPDU", HFILL }},
3206 { &hf_snmp_encryptedPDU,
3207 { "encryptedPDU", "snmp.encryptedPDU",
3208 FT_BYTES, BASE_HEX, NULL, 0,
3209 "snmp.T_encryptedPDU", HFILL }},
3210 { &hf_snmp_contextEngineID,
3211 { "contextEngineID", "snmp.contextEngineID",
3212 FT_BYTES, BASE_HEX, NULL, 0,
3213 "snmp.SnmpEngineID", HFILL }},
3214 { &hf_snmp_contextName,
3215 { "contextName", "snmp.contextName",
3216 FT_BYTES, BASE_HEX, NULL, 0,
3217 "snmp.OCTET_STRING", HFILL }},
3218 { &hf_snmp_get_request,
3219 { "get-request", "snmp.get_request",
3220 FT_NONE, BASE_NONE, NULL, 0,
3221 "snmp.GetRequest_PDU", HFILL }},
3222 { &hf_snmp_get_next_request,
3223 { "get-next-request", "snmp.get_next_request",
3224 FT_NONE, BASE_NONE, NULL, 0,
3225 "snmp.GetNextRequest_PDU", HFILL }},
3226 { &hf_snmp_get_response,
3227 { "get-response", "snmp.get_response",
3228 FT_NONE, BASE_NONE, NULL, 0,
3229 "snmp.GetResponse_PDU", HFILL }},
3230 { &hf_snmp_set_request,
3231 { "set-request", "snmp.set_request",
3232 FT_NONE, BASE_NONE, NULL, 0,
3233 "snmp.SetRequest_PDU", HFILL }},
3235 { "trap", "snmp.trap",
3236 FT_NONE, BASE_NONE, NULL, 0,
3237 "snmp.Trap_PDU", HFILL }},
3238 { &hf_snmp_getBulkRequest,
3239 { "getBulkRequest", "snmp.getBulkRequest",
3240 FT_NONE, BASE_NONE, NULL, 0,
3241 "snmp.GetBulkRequest_PDU", HFILL }},
3242 { &hf_snmp_informRequest,
3243 { "informRequest", "snmp.informRequest",
3244 FT_NONE, BASE_NONE, NULL, 0,
3245 "snmp.InformRequest_PDU", HFILL }},
3246 { &hf_snmp_sNMPv2_Trap,
3247 { "sNMPv2-Trap", "snmp.sNMPv2_Trap",
3248 FT_NONE, BASE_NONE, NULL, 0,
3249 "snmp.SNMPv2_Trap_PDU", HFILL }},
3251 { "report", "snmp.report",
3252 FT_NONE, BASE_NONE, NULL, 0,
3253 "snmp.Report_PDU", HFILL }},
3254 { &hf_snmp_request_id,
3255 { "request-id", "snmp.request_id",
3256 FT_INT32, BASE_DEC, NULL, 0,
3257 "snmp.INTEGER", HFILL }},
3258 { &hf_snmp_error_status,
3259 { "error-status", "snmp.error_status",
3260 FT_INT32, BASE_DEC, VALS(snmp_T_error_status_vals), 0,
3261 "snmp.T_error_status", HFILL }},
3262 { &hf_snmp_error_index,
3263 { "error-index", "snmp.error_index",
3264 FT_INT32, BASE_DEC, NULL, 0,
3265 "snmp.INTEGER", HFILL }},
3266 { &hf_snmp_variable_bindings,
3267 { "variable-bindings", "snmp.variable_bindings",
3268 FT_UINT32, BASE_DEC, NULL, 0,
3269 "snmp.VarBindList", HFILL }},
3270 { &hf_snmp_bulkPDU_request_id,
3271 { "request-id", "snmp.request_id",
3272 FT_INT32, BASE_DEC, NULL, 0,
3273 "snmp.Integer32", HFILL }},
3274 { &hf_snmp_non_repeaters,
3275 { "non-repeaters", "snmp.non_repeaters",
3276 FT_UINT32, BASE_DEC, NULL, 0,
3277 "snmp.INTEGER_0_2147483647", HFILL }},
3278 { &hf_snmp_max_repetitions,
3279 { "max-repetitions", "snmp.max_repetitions",
3280 FT_UINT32, BASE_DEC, NULL, 0,
3281 "snmp.INTEGER_0_2147483647", HFILL }},
3282 { &hf_snmp_enterprise,
3283 { "enterprise", "snmp.enterprise",
3284 FT_OID, BASE_NONE, NULL, 0,
3285 "snmp.EnterpriseOID", HFILL }},
3286 { &hf_snmp_agent_addr,
3287 { "agent-addr", "snmp.agent_addr",
3288 FT_IPv4, BASE_NONE, NULL, 0,
3289 "snmp.NetworkAddress", HFILL }},
3290 { &hf_snmp_generic_trap,
3291 { "generic-trap", "snmp.generic_trap",
3292 FT_INT32, BASE_DEC, VALS(snmp_T_generic_trap_vals), 0,
3293 "snmp.T_generic_trap", HFILL }},
3294 { &hf_snmp_specific_trap,
3295 { "specific-trap", "snmp.specific_trap",
3296 FT_INT32, BASE_DEC, NULL, 0,
3297 "snmp.INTEGER", HFILL }},
3298 { &hf_snmp_time_stamp,
3299 { "time-stamp", "snmp.time_stamp",
3300 FT_UINT32, BASE_DEC, NULL, 0,
3301 "snmp.TimeTicks", HFILL }},
3303 { "name", "snmp.name",
3304 FT_OID, BASE_NONE, NULL, 0,
3305 "snmp.ObjectName", HFILL }},
3306 { &hf_snmp_valueType,
3307 { "valueType", "snmp.valueType",
3308 FT_NONE, BASE_NONE, NULL, 0,
3309 "snmp.NULL", HFILL }},
3310 { &hf_snmp_VarBindList_item,
3311 { "VarBindList", "snmp.VarBindList_item",
3312 FT_NONE, BASE_NONE, NULL, 0,
3313 "snmp.VarBind", HFILL }},
3315 { "open", "snmp.open",
3316 FT_UINT32, BASE_DEC, VALS(snmp_OpenPDU_vals), 0,
3317 "snmp.OpenPDU", HFILL }},
3319 { "close", "snmp.close",
3320 FT_INT32, BASE_DEC, VALS(snmp_ClosePDU_U_vals), 0,
3321 "snmp.ClosePDU", HFILL }},
3322 { &hf_snmp_registerRequest,
3323 { "registerRequest", "snmp.registerRequest",
3324 FT_NONE, BASE_NONE, NULL, 0,
3325 "snmp.RReqPDU", HFILL }},
3326 { &hf_snmp_registerResponse,
3327 { "registerResponse", "snmp.registerResponse",
3328 FT_UINT32, BASE_DEC, VALS(snmp_RegisterResponse_vals), 0,
3329 "snmp.RegisterResponse", HFILL }},
3330 { &hf_snmp_commitOrRollback,
3331 { "commitOrRollback", "snmp.commitOrRollback",
3332 FT_INT32, BASE_DEC, VALS(snmp_SOutPDU_U_vals), 0,
3333 "snmp.SOutPDU", HFILL }},
3335 { "rRspPDU", "snmp.rRspPDU",
3336 FT_INT32, BASE_DEC, VALS(snmp_RRspPDU_U_vals), 0,
3337 "snmp.RRspPDU", HFILL }},
3339 { "pDUs", "snmp.pDUs",
3340 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3341 "snmp.PDUs", HFILL }},
3342 { &hf_snmp_smux_simple,
3343 { "smux-simple", "snmp.smux_simple",
3344 FT_NONE, BASE_NONE, NULL, 0,
3345 "snmp.SimpleOpen", HFILL }},
3346 { &hf_snmp_smux_version,
3347 { "smux-version", "snmp.smux_version",
3348 FT_INT32, BASE_DEC, VALS(snmp_T_smux_version_vals), 0,
3349 "snmp.T_smux_version", HFILL }},
3350 { &hf_snmp_identity,
3351 { "identity", "snmp.identity",
3352 FT_OID, BASE_NONE, NULL, 0,
3353 "snmp.OBJECT_IDENTIFIER", HFILL }},
3354 { &hf_snmp_description,
3355 { "description", "snmp.description",
3356 FT_BYTES, BASE_HEX, NULL, 0,
3357 "snmp.DisplayString", HFILL }},
3358 { &hf_snmp_password,
3359 { "password", "snmp.password",
3360 FT_BYTES, BASE_HEX, NULL, 0,
3361 "snmp.OCTET_STRING", HFILL }},
3363 { "subtree", "snmp.subtree",
3364 FT_OID, BASE_NONE, NULL, 0,
3365 "snmp.ObjectName", HFILL }},
3366 { &hf_snmp_priority,
3367 { "priority", "snmp.priority",
3368 FT_INT32, BASE_DEC, NULL, 0,
3369 "snmp.INTEGER_M1_2147483647", HFILL }},
3370 { &hf_snmp_operation,
3371 { "operation", "snmp.operation",
3372 FT_INT32, BASE_DEC, VALS(snmp_T_operation_vals), 0,
3373 "snmp.T_operation", HFILL }},
3375 /*--- End of included file: packet-snmp-hfarr.c ---*/
3376 #line 1919 "packet-snmp-template.c"
3379 /* List of subtrees */
3380 static gint *ett[] = {
3386 &ett_authParameters,
3391 &ett_decoding_error,
3393 /*--- Included file: packet-snmp-ettarr.c ---*/
3394 #line 1 "packet-snmp-ettarr.c"
3396 &ett_snmp_Messagev2u,
3397 &ett_snmp_T_datav2u,
3398 &ett_snmp_UsmSecurityParameters,
3399 &ett_snmp_SNMPv3Message,
3400 &ett_snmp_HeaderData,
3401 &ett_snmp_ScopedPduData,
3402 &ett_snmp_ScopedPDU,
3406 &ett_snmp_Trap_PDU_U,
3408 &ett_snmp_VarBindList,
3409 &ett_snmp_SMUX_PDUs,
3410 &ett_snmp_RegisterResponse,
3412 &ett_snmp_SimpleOpen_U,
3413 &ett_snmp_RReqPDU_U,
3415 /*--- End of included file: packet-snmp-ettarr.c ---*/
3416 #line 1935 "packet-snmp-template.c"
3418 module_t *snmp_module;
3419 static uat_field_t users_fields[] = {
3420 UAT_FLD_BUFFER(snmp_users,engine_id,"Engine ID","Engine-id for this entry (empty = any)"),
3421 UAT_FLD_LSTRING(snmp_users,userName,"Username","The username"),
3422 UAT_FLD_VS(snmp_users,auth_model,"Authentication model",auth_types,"Algorithm to be used for authentication."),
3423 UAT_FLD_LSTRING(snmp_users,authPassword,"Password","The password used for authenticating packets for this entry"),
3424 UAT_FLD_VS(snmp_users,priv_proto,"Privacy protocol",priv_types,"Algorithm to be used for privacy."),
3425 UAT_FLD_LSTRING(snmp_users,privPassword,"Privacy password","The password used for encrypting packets for this entry"),
3429 assocs_uat = uat_new("SNMP Users",
3430 sizeof(snmp_ue_assoc_t),
3436 "ChSNMPUsersSection",
3438 snmp_users_update_cb,
3442 /* Register protocol */
3443 proto_snmp = proto_register_protocol(PNAME, PSNAME, PFNAME);
3444 new_register_dissector("snmp", dissect_snmp, proto_snmp);
3446 /* Register fields and subtrees */
3447 proto_register_field_array(proto_snmp, hf, array_length(hf));
3448 proto_register_subtree_array(ett, array_length(ett));
3451 /* Register configuration preferences */
3452 snmp_module = prefs_register_protocol(proto_snmp, process_prefs);
3453 prefs_register_bool_preference(snmp_module, "display_oid",
3454 "Show SNMP OID in info column",
3455 "Whether the SNMP OID should be shown in the info column",
3458 prefs_register_obsolete_preference(snmp_module, "mib_modules");
3459 prefs_register_obsolete_preference(snmp_module, "users_file");
3461 prefs_register_bool_preference(snmp_module, "desegment",
3462 "Reassemble SNMP-over-TCP messages\nspanning multiple TCP segments",
3463 "Whether the SNMP dissector should reassemble messages spanning multiple TCP segments."
3464 " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
3467 prefs_register_bool_preference(snmp_module, "var_in_tree",
3468 "Display dissected variables inside SNMP tree",
3469 "ON - display dissected variables inside SNMP tree, OFF - display dissected variables in root tree after SNMP",
3472 prefs_register_uat_preference(snmp_module, "users_table",
3474 "Table of engine-user associations used for authentication and decryption",
3478 prefs_register_static_text_preference(snmp_module, "info_mibs",
3479 "MIB settings can be changed in the Name Resolution preferences",
3480 "MIB settings can be changed in the Name Resolution preferences");
3482 value_sub_dissectors_table = register_dissector_table("snmp.variable_oid","SNMP Variable OID", FT_STRING, BASE_NONE);
3484 register_init_routine(renew_ue_cache);
3488 /*--- proto_reg_handoff_snmp ---------------------------------------*/
3489 void proto_reg_handoff_snmp(void) {
3490 dissector_handle_t snmp_tcp_handle;
3492 snmp_handle = find_dissector("snmp");
3494 dissector_add("udp.port", UDP_PORT_SNMP, snmp_handle);
3495 dissector_add("udp.port", UDP_PORT_SNMP_TRAP, snmp_handle);
3496 dissector_add("udp.port", UDP_PORT_SNMP_PATROL, snmp_handle);
3497 dissector_add("ethertype", ETHERTYPE_SNMP, snmp_handle);
3498 dissector_add("ipx.socket", IPX_SOCKET_SNMP_AGENT, snmp_handle);
3499 dissector_add("ipx.socket", IPX_SOCKET_SNMP_SINK, snmp_handle);
3500 dissector_add("hpext.dxsap", HPEXT_SNMP, snmp_handle);
3502 snmp_tcp_handle = create_dissector_handle(dissect_snmp_tcp, proto_snmp);
3503 dissector_add("tcp.port", TCP_PORT_SNMP, snmp_tcp_handle);
3504 dissector_add("tcp.port", TCP_PORT_SNMP_TRAP, snmp_tcp_handle);
3506 data_handle = find_dissector("data");
3509 * Process preference settings.
3511 * We can't do this in the register routine, as preferences aren't
3512 * read until all dissector register routines have been called (so
3513 * that all dissector preferences have been registered).
3520 proto_register_smux(void)
3522 static hf_register_info hf[] = {
3524 { "Version", "smux.version", FT_UINT8, BASE_DEC, NULL,
3527 { "PDU type", "smux.pdutype", FT_UINT8, BASE_DEC, VALS(smux_types),
3530 static gint *ett[] = {
3534 proto_smux = proto_register_protocol("SNMP Multiplex Protocol",
3536 proto_register_field_array(proto_smux, hf, array_length(hf));
3537 proto_register_subtree_array(ett, array_length(ett));
3542 proto_reg_handoff_smux(void)
3544 dissector_handle_t smux_handle;
3546 smux_handle = create_dissector_handle(dissect_smux, proto_smux);
3547 dissector_add("tcp.port", TCP_PORT_SMUX, smux_handle);