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)
65 #include <epan/packet.h>
66 #include <epan/strutil.h>
67 #include <epan/conversation.h>
68 #include <epan/etypes.h>
69 #include <epan/prefs.h>
70 #include <epan/sminmpec.h>
71 #include <epan/emem.h>
72 #include <epan/next_tvb.h>
74 #include <epan/asn1.h>
75 #include "packet-ipx.h"
76 #include "packet-hpext.h"
79 #include "packet-ber.h"
81 #include "packet-snmp.h"
83 #include <epan/crypt/crypt-sha1.h>
84 #include <epan/crypt/crypt-md5.h>
85 #include <epan/expert.h>
86 #include <epan/report_err.h>
87 #include <epan/oids.h>
94 /* Take a pointer that may be null and return a pointer that's not null
95 by turning null pointers into pointers to the above null string,
96 and, if the argument pointer wasn't null, make sure we handle
97 non-printable characters in the string by escaping them. */
98 #define SAFE_STRING(s, l) (((s) != NULL) ? format_text((s), (l)) : "")
100 #define PNAME "Simple Network Management Protocol"
101 #define PSNAME "SNMP"
102 #define PFNAME "snmp"
104 #define UDP_PORT_SNMP 161
105 #define UDP_PORT_SNMP_TRAP 162
106 #define TCP_PORT_SNMP 161
107 #define TCP_PORT_SNMP_TRAP 162
108 #define TCP_PORT_SMUX 199
109 #define UDP_PORT_SNMP_PATROL 8161
111 /* Initialize the protocol and registered fields */
112 static int proto_snmp = -1;
113 static int proto_smux = -1;
115 static gboolean display_oid = TRUE;
116 static gboolean snmp_var_in_tree = TRUE;
118 static gboolean snmp_usm_auth_md5(snmp_usm_params_t* p, guint8**, guint*, gchar const**);
119 static gboolean snmp_usm_auth_sha1(snmp_usm_params_t* p, guint8**, guint*, gchar const**);
121 static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t*, tvbuff_t*, gchar const**);
122 static tvbuff_t* snmp_usm_priv_aes(snmp_usm_params_t*, tvbuff_t*, gchar const**);
125 static void snmp_usm_password_to_key_md5(const guint8 *password, guint passwordlen, const guint8 *engineID, guint engineLength, guint8 *key);
126 static void snmp_usm_password_to_key_sha1(const guint8 *password, guint passwordlen, const guint8 *engineID, guint engineLength, guint8 *key);
129 static snmp_usm_auth_model_t model_md5 = {snmp_usm_password_to_key_md5, snmp_usm_auth_md5, 16};
130 static snmp_usm_auth_model_t model_sha1 = {snmp_usm_password_to_key_sha1, snmp_usm_auth_sha1, 20};
132 static const value_string auth_types[] = {
137 static snmp_usm_auth_model_t* auth_models[] = {&model_md5,&model_sha1};
140 static const value_string priv_types[] = {
145 static snmp_usm_decoder_t priv_protos[] = {snmp_usm_priv_des, snmp_usm_priv_aes};
147 static snmp_ue_assoc_t* ueas = NULL;
148 static guint num_ueas = 0;
149 static snmp_ue_assoc_t* localized_ues = NULL;
150 static snmp_ue_assoc_t* unlocalized_ues = NULL;
153 /* Variabled used for handling enterprise spesific trap types */
154 typedef struct _snmp_st_assoc_t {
159 static guint num_specific_traps = 0;
160 static snmp_st_assoc_t *specific_traps = NULL;
161 static const char *enterprise_oid = NULL;
162 static guint generic_trap = 0;
165 static snmp_usm_params_t usm_p = {FALSE,FALSE,0,0,0,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,FALSE};
168 #define TH_CRYPT 0x02
169 #define TH_REPORT 0x04
171 /* desegmentation of SNMP-over-TCP */
172 static gboolean snmp_desegment = TRUE;
174 /* Global variables */
176 guint32 MsgSecurityModel;
177 tvbuff_t *oid_tvb=NULL;
178 tvbuff_t *value_tvb=NULL;
180 static dissector_handle_t snmp_handle;
181 static dissector_handle_t data_handle;
183 static next_tvb_list_t var_list;
185 static int hf_snmp_v3_flags_auth = -1;
186 static int hf_snmp_v3_flags_crypt = -1;
187 static int hf_snmp_v3_flags_report = -1;
189 static int hf_snmp_engineid_conform = -1;
190 static int hf_snmp_engineid_enterprise = -1;
191 static int hf_snmp_engineid_format = -1;
192 static int hf_snmp_engineid_ipv4 = -1;
193 static int hf_snmp_engineid_ipv6 = -1;
194 static int hf_snmp_engineid_cisco_type = -1;
195 static int hf_snmp_engineid_mac = -1;
196 static int hf_snmp_engineid_text = -1;
197 static int hf_snmp_engineid_time = -1;
198 static int hf_snmp_engineid_data = -1;
199 static int hf_snmp_decryptedPDU = -1;
200 static int hf_snmp_msgAuthentication = -1;
202 static int hf_snmp_noSuchObject = -1;
203 static int hf_snmp_noSuchInstance = -1;
204 static int hf_snmp_endOfMibView = -1;
205 static int hf_snmp_unSpecified = -1;
207 static int hf_snmp_integer32_value = -1;
208 static int hf_snmp_octetstring_value = -1;
209 static int hf_snmp_oid_value = -1;
210 static int hf_snmp_null_value = -1;
211 static int hf_snmp_ipv4_value = -1;
212 static int hf_snmp_ipv6_value = -1;
213 static int hf_snmp_anyaddress_value = -1;
214 static int hf_snmp_unsigned32_value = -1;
215 static int hf_snmp_unknown_value = -1;
216 static int hf_snmp_opaque_value = -1;
217 static int hf_snmp_nsap_value = -1;
218 static int hf_snmp_counter_value = -1;
219 static int hf_snmp_timeticks_value = -1;
220 static int hf_snmp_big_counter_value = -1;
221 static int hf_snmp_gauge32_value = -1;
223 static int hf_snmp_objectname = -1;
224 static int hf_snmp_scalar_instance_index = -1;
228 /*--- Included file: packet-snmp-hf.c ---*/
229 #line 1 "packet-snmp-hf.c"
230 static int hf_snmp_SMUX_PDUs_PDU = -1; /* SMUX_PDUs */
231 static int hf_snmp_version = -1; /* Version */
232 static int hf_snmp_community = -1; /* Community */
233 static int hf_snmp_data = -1; /* PDUs */
234 static int hf_snmp_parameters = -1; /* OCTET_STRING */
235 static int hf_snmp_datav2u = -1; /* T_datav2u */
236 static int hf_snmp_v2u_plaintext = -1; /* PDUs */
237 static int hf_snmp_encrypted = -1; /* OCTET_STRING */
238 static int hf_snmp_msgAuthoritativeEngineID = -1; /* T_msgAuthoritativeEngineID */
239 static int hf_snmp_msgAuthoritativeEngineBoots = -1; /* T_msgAuthoritativeEngineBoots */
240 static int hf_snmp_msgAuthoritativeEngineTime = -1; /* T_msgAuthoritativeEngineTime */
241 static int hf_snmp_msgUserName = -1; /* T_msgUserName */
242 static int hf_snmp_msgAuthenticationParameters = -1; /* T_msgAuthenticationParameters */
243 static int hf_snmp_msgPrivacyParameters = -1; /* T_msgPrivacyParameters */
244 static int hf_snmp_msgVersion = -1; /* Version */
245 static int hf_snmp_msgGlobalData = -1; /* HeaderData */
246 static int hf_snmp_msgSecurityParameters = -1; /* T_msgSecurityParameters */
247 static int hf_snmp_msgData = -1; /* ScopedPduData */
248 static int hf_snmp_msgID = -1; /* INTEGER_0_2147483647 */
249 static int hf_snmp_msgMaxSize = -1; /* INTEGER_484_2147483647 */
250 static int hf_snmp_msgFlags = -1; /* T_msgFlags */
251 static int hf_snmp_msgSecurityModel = -1; /* T_msgSecurityModel */
252 static int hf_snmp_plaintext = -1; /* ScopedPDU */
253 static int hf_snmp_encryptedPDU = -1; /* T_encryptedPDU */
254 static int hf_snmp_contextEngineID = -1; /* SnmpEngineID */
255 static int hf_snmp_contextName = -1; /* OCTET_STRING */
256 static int hf_snmp_get_request = -1; /* GetRequest_PDU */
257 static int hf_snmp_get_next_request = -1; /* GetNextRequest_PDU */
258 static int hf_snmp_get_response = -1; /* GetResponse_PDU */
259 static int hf_snmp_set_request = -1; /* SetRequest_PDU */
260 static int hf_snmp_trap = -1; /* Trap_PDU */
261 static int hf_snmp_getBulkRequest = -1; /* GetBulkRequest_PDU */
262 static int hf_snmp_informRequest = -1; /* InformRequest_PDU */
263 static int hf_snmp_sNMPv2_Trap = -1; /* SNMPv2_Trap_PDU */
264 static int hf_snmp_report = -1; /* Report_PDU */
265 static int hf_snmp_request_id = -1; /* INTEGER */
266 static int hf_snmp_error_status = -1; /* T_error_status */
267 static int hf_snmp_error_index = -1; /* INTEGER */
268 static int hf_snmp_variable_bindings = -1; /* VarBindList */
269 static int hf_snmp_bulkPDU_request_id = -1; /* Integer32 */
270 static int hf_snmp_non_repeaters = -1; /* INTEGER_0_2147483647 */
271 static int hf_snmp_max_repetitions = -1; /* INTEGER_0_2147483647 */
272 static int hf_snmp_enterprise = -1; /* EnterpriseOID */
273 static int hf_snmp_agent_addr = -1; /* NetworkAddress */
274 static int hf_snmp_generic_trap = -1; /* GenericTrap */
275 static int hf_snmp_specific_trap = -1; /* SpecificTrap */
276 static int hf_snmp_time_stamp = -1; /* TimeTicks */
277 static int hf_snmp_name = -1; /* ObjectName */
278 static int hf_snmp_valueType = -1; /* NULL */
279 static int hf_snmp_VarBindList_item = -1; /* VarBind */
280 static int hf_snmp_open = -1; /* OpenPDU */
281 static int hf_snmp_close = -1; /* ClosePDU */
282 static int hf_snmp_registerRequest = -1; /* RReqPDU */
283 static int hf_snmp_registerResponse = -1; /* RegisterResponse */
284 static int hf_snmp_commitOrRollback = -1; /* SOutPDU */
285 static int hf_snmp_rRspPDU = -1; /* RRspPDU */
286 static int hf_snmp_pDUs = -1; /* PDUs */
287 static int hf_snmp_smux_simple = -1; /* SimpleOpen */
288 static int hf_snmp_smux_version = -1; /* T_smux_version */
289 static int hf_snmp_identity = -1; /* OBJECT_IDENTIFIER */
290 static int hf_snmp_description = -1; /* DisplayString */
291 static int hf_snmp_password = -1; /* OCTET_STRING */
292 static int hf_snmp_subtree = -1; /* ObjectName */
293 static int hf_snmp_priority = -1; /* INTEGER_M1_2147483647 */
294 static int hf_snmp_operation = -1; /* T_operation */
296 /*--- End of included file: packet-snmp-hf.c ---*/
297 #line 220 "packet-snmp-template.c"
299 static int hf_smux_version = -1;
300 static int hf_smux_pdutype = -1;
302 /* Initialize the subtree pointers */
303 static gint ett_smux = -1;
304 static gint ett_snmp = -1;
305 static gint ett_engineid = -1;
306 static gint ett_msgFlags = -1;
307 static gint ett_encryptedPDU = -1;
308 static gint ett_decrypted = -1;
309 static gint ett_authParameters = -1;
310 static gint ett_internet = -1;
311 static gint ett_varbind = -1;
312 static gint ett_name = -1;
313 static gint ett_value = -1;
314 static gint ett_decoding_error = -1;
317 /*--- Included file: packet-snmp-ett.c ---*/
318 #line 1 "packet-snmp-ett.c"
319 static gint ett_snmp_Message = -1;
320 static gint ett_snmp_Messagev2u = -1;
321 static gint ett_snmp_T_datav2u = -1;
322 static gint ett_snmp_UsmSecurityParameters = -1;
323 static gint ett_snmp_SNMPv3Message = -1;
324 static gint ett_snmp_HeaderData = -1;
325 static gint ett_snmp_ScopedPduData = -1;
326 static gint ett_snmp_ScopedPDU = -1;
327 static gint ett_snmp_PDUs = -1;
328 static gint ett_snmp_PDU = -1;
329 static gint ett_snmp_BulkPDU = -1;
330 static gint ett_snmp_Trap_PDU_U = -1;
331 static gint ett_snmp_VarBind = -1;
332 static gint ett_snmp_VarBindList = -1;
333 static gint ett_snmp_SMUX_PDUs = -1;
334 static gint ett_snmp_RegisterResponse = -1;
335 static gint ett_snmp_OpenPDU = -1;
336 static gint ett_snmp_SimpleOpen_U = -1;
337 static gint ett_snmp_RReqPDU_U = -1;
339 /*--- End of included file: packet-snmp-ett.c ---*/
340 #line 239 "packet-snmp-template.c"
342 static const true_false_string auth_flags = {
347 /* Security Models */
349 #define SNMP_SEC_ANY 0
350 #define SNMP_SEC_V1 1
351 #define SNMP_SEC_V2C 2
352 #define SNMP_SEC_USM 3
354 static const value_string sec_models[] = {
355 { SNMP_SEC_ANY, "Any" },
356 { SNMP_SEC_V1, "V1" },
357 { SNMP_SEC_V2C, "V2C" },
358 { SNMP_SEC_USM, "USM" },
363 #define SMUX_MSG_OPEN 0
364 #define SMUX_MSG_CLOSE 1
365 #define SMUX_MSG_RREQ 2
366 #define SMUX_MSG_RRSP 3
367 #define SMUX_MSG_SOUT 4
369 static const value_string smux_types[] = {
370 { SMUX_MSG_OPEN, "Open" },
371 { SMUX_MSG_CLOSE, "Close" },
372 { SMUX_MSG_RREQ, "Registration Request" },
373 { SMUX_MSG_RRSP, "Registration Response" },
374 { SMUX_MSG_SOUT, "Commit Or Rollback" },
379 #define SNMP_IPA 0 /* IP Address */
380 #define SNMP_CNT 1 /* Counter (Counter32) */
381 #define SNMP_GGE 2 /* Gauge (Gauge32) */
382 #define SNMP_TIT 3 /* TimeTicks */
383 #define SNMP_OPQ 4 /* Opaque */
384 #define SNMP_NSP 5 /* NsapAddress */
385 #define SNMP_C64 6 /* Counter64 */
386 #define SNMP_U32 7 /* Uinteger32 */
393 dissector_table_t value_sub_dissectors_table;
397 snmp_lookup_specific_trap (guint specific_trap)
401 for (i = 0; i < num_specific_traps; i++) {
402 snmp_st_assoc_t *u = &(specific_traps[i]);
404 if ((u->trap == specific_trap) &&
405 (strcmp (u->enterprise, enterprise_oid) == 0))
415 * dissect_snmp_VarBind
416 * this routine dissects variable bindings, looking for the oid information in our oid reporsitory
417 * to format and add the value adequatelly.
419 * The choice to handwrite this code instead of using the asn compiler is to avoid having tons
420 * of uses of global variables distributed in very different parts of the code.
421 * Other than that there's a cosmetic thing: the tree from ASN generated code would be so
422 * convoluted due to the nesting of CHOICEs in the definition of VarBind/value.
424 * XXX: the length of this function (~400 lines) is an aberration!
425 * oid_key_t:key_type could become a series of callbacks instead of an enum
426 * the (! oid_info_is_ok) switch could be made into an array (would be slower)
429 NetworkAddress ::= CHOICE { internet IpAddress }
430 IpAddress ::= [APPLICATION 0] IMPLICIT OCTET STRING (SIZE (4))
431 TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
432 Integer32 ::= INTEGER (-2147483648..2147483647)
433 ObjectName ::= OBJECT IDENTIFIER
434 Counter32 ::= [APPLICATION 1] IMPLICIT INTEGER (0..4294967295)
435 Gauge32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
436 Unsigned32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
437 Integer-value ::= INTEGER (-2147483648..2147483647)
438 Integer32 ::= INTEGER (-2147483648..2147483647)
439 ObjectID-value ::= OBJECT IDENTIFIER
441 TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
442 Opaque ::= [APPLICATION 4] IMPLICIT OCTET STRING
443 Counter64 ::= [APPLICATION 6] IMPLICIT INTEGER (0..18446744073709551615)
445 ObjectSyntax ::= CHOICE {
447 application-wide ApplicationSyntax
450 SimpleSyntax ::= CHOICE {
451 integer-value Integer-value,
452 string-value String-value,
453 objectID-value ObjectID-value,
457 ApplicationSyntax ::= CHOICE {
458 ipAddress-value IpAddress,
459 counter-value Counter32,
460 timeticks-value TimeTicks,
461 arbitrary-value Opaque,
462 big-counter-value Counter64,
463 unsigned-integer-value Unsigned32
466 ValueType ::= CHOICE {
469 noSuchObject[0] IMPLICIT NULL,
470 noSuchInstance[1] IMPLICIT NULL,
471 endOfMibView[2] IMPLICIT NULL
474 VarBind ::= SEQUENCE {
481 extern int dissect_snmp_VarBind(gboolean implicit_tag _U_,
487 int seq_offset, name_offset, value_offset, value_start;
488 guint32 seq_len, name_len, value_len;
495 oid_info_t* oid_info = NULL;
496 guint oid_matched, oid_left;
497 proto_item *pi_name, *pi_varbind, *pi_value = NULL;
498 proto_tree *pt, *pt_varbind, *pt_name, *pt_value;
499 char label[ITEM_LABEL_LENGTH];
501 const char* info_oid = NULL;
504 int min_len = 0, max_len = 0;
505 gboolean oid_info_is_ok;
506 const char* oid_string = NULL;
507 enum {BER_NO_ERROR, BER_WRONG_LENGTH, BER_WRONG_TAG} format_error = BER_NO_ERROR;
511 /* first have the VarBind's sequence header */
512 offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
513 offset = get_ber_length(tvb, offset, &seq_len, &ind);
515 seq_len += offset - seq_offset;
517 if (!pc && ber_class==BER_CLASS_UNI && tag==BER_UNI_TAG_SEQUENCE) {
518 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"VarBind must be an universal class sequence");
519 pt = proto_item_add_subtree(pi,ett_decoding_error);
520 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "VarBind is not an universal class sequence");
521 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
525 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"Indicator must be clear in VarBind");
526 pt = proto_item_add_subtree(pi,ett_decoding_error);
527 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "VarBind has indicator set");
528 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
531 /* then we have the ObjectName's header */
533 offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
534 name_offset = offset = get_ber_length(tvb, offset, &name_len, &ind);
536 if (! ( !pc && ber_class==BER_CLASS_UNI && tag==BER_UNI_TAG_OID) ) {
537 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"ObjectName must be an OID in primitive encoding");
538 pt = proto_item_add_subtree(pi,ett_decoding_error);
539 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "ObjectName not an OID");
540 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
544 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"Indicator must be clear in ObjectName");
545 pt = proto_item_add_subtree(pi,ett_decoding_error);
546 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "ObjectName has indicator set");
547 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
551 value_start = offset;
553 /* then we have the value's header */
554 offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
555 value_offset = offset = get_ber_length(tvb, offset, &value_len, &ind);
558 proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"the value must be in primitive encoding");
559 pt = proto_item_add_subtree(pi,ett_decoding_error);
560 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "value not in primitive encoding");
561 return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
564 /* Now, we know where everithing is */
568 /* we add the varbind tree root with a dummy label we'll fill later on */
569 pi_varbind = proto_tree_add_text(tree,tvb,seq_offset,seq_len,"VarBind");
570 pt_varbind = proto_item_add_subtree(pi_varbind,ett_varbind);
573 pi_name = proto_tree_add_item(pt_varbind,hf_snmp_objectname,tvb,name_offset,name_len,FALSE);
574 pt_name = proto_item_add_subtree(pi_name,ett_name);
576 /* fetch ObjectName and its relative oid_info */
577 oid_bytes = ep_tvb_memdup(tvb, name_offset, name_len);
578 oid_info = oid_get_from_encoded(oid_bytes, name_len, &subids, &oid_matched, &oid_left);
580 add_oid_debug_subtree(oid_info,pt_name);
583 repr = oid_encoded2string(oid_bytes, name_len);
584 proto_item* pi = proto_tree_add_text(pt_name,tvb, 0, 0, "invalid oid: %s", repr);
585 pt = proto_item_add_subtree(pi, ett_decoding_error);
586 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "invalid oid: %s", repr);
587 return dissect_unknown_ber(actx->pinfo, tvb, name_offset, pt);
590 if (oid_matched+oid_left) {
591 oid_string = oid_subid2string(subids,oid_matched+oid_left);
594 if (ber_class == BER_CLASS_CON) {
595 /* if we have an error value just add it and get out the way ASAP */
599 if (value_len != 0) {
600 min_len = max_len = 0;
601 format_error = BER_WRONG_LENGTH;
606 hfid = hf_snmp_noSuchObject;
607 note = "noSuchObject";
610 hfid = hf_snmp_noSuchInstance;
611 note = "noSuchInstance";
614 hfid = hf_snmp_endOfMibView;
615 note = "endOfMibView";
618 pi = proto_tree_add_text(pt_varbind,tvb,0,0,"Wrong tag for Error Value: expected 0, 1, or 2 but got: %d",tag);
619 pt = proto_item_add_subtree(pi,ett_decoding_error);
620 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong tag for SNMP VarBind error value");
621 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
625 pi = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,FALSE);
626 expert_add_info_format(actx->pinfo, pi, PI_RESPONSE_CODE, PI_NOTE, "%s",note);
627 g_strlcpy (label, note, ITEM_LABEL_LENGTH);
631 /* 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 */
632 switch (oid_info->kind) {
633 case OID_KIND_SCALAR:
635 /* OK: we got the instance sub-id */
636 proto_tree_add_uint64(pt_name,hf_snmp_scalar_instance_index,tvb,name_offset,name_len,subids[oid_matched]);
637 oid_info_is_ok = TRUE;
639 } else if (oid_left == 0) {
640 if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
641 /* unSpecified does not require an instance sub-id add the new value and get off the way! */
642 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
645 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"A scalar should have one instance sub-id this one has none");
646 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "No instance sub-id in scalar value");
647 oid_info_is_ok = FALSE;
651 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);
652 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong number of instance sub-ids in scalar value");
653 oid_info_is_ok = FALSE;
657 case OID_KIND_COLUMN:
658 if ( oid_info->parent->kind == OID_KIND_ROW) {
659 oid_key_t* k = oid_info->parent->key;
660 guint key_start = oid_matched;
661 guint key_len = oid_left;
662 oid_info_is_ok = TRUE;
664 if ( key_len == 0 && ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
665 /* unSpecified does not require an instance sub-id add the new value and get off the way! */
666 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
671 for (;k;k = k->next) {
674 if (key_start >= oid_matched+oid_left) {
675 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index sub-oid shorter than expected");
676 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid shorter than expected");
677 oid_info_is_ok = FALSE;
681 switch(k->key_type) {
682 case OID_KEY_TYPE_WRONG: {
683 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");
684 expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
685 oid_info_is_ok = FALSE;
688 case OID_KEY_TYPE_INTEGER: {
689 if (IS_FT_INT(k->ft_type)) {
690 proto_tree_add_int(pt_name,k->hfid,tvb,name_offset,name_len,(guint)subids[key_start]);
691 } else { /* if it's not an unsigned int let proto_tree_add_uint throw a warning */
692 proto_tree_add_uint(pt_name,k->hfid,tvb,name_offset,name_len,(guint)subids[key_start]);
696 continue; /* k->next */
698 case OID_KEY_TYPE_IMPLIED_OID:
699 suboid_len = key_len;
703 case OID_KEY_TYPE_OID: {
705 guint suboid_buf_len;
708 suboid_len = subids[key_start++];
712 suboid = &(subids[key_start]);
714 if( suboid_len == 0 ) {
715 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"an index sub-oid OID cannot be 0 bytes long!");
716 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid OID with len=0");
717 oid_info_is_ok = FALSE;
721 if( key_len < suboid_len ) {
722 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index sub-oid should not be longer than remaining oid size");
723 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid longer than remaining oid size");
724 oid_info_is_ok = FALSE;
728 suboid_buf_len = oid_subid2encoded(suboid_len, suboid, &suboid_buf);
730 DISSECTOR_ASSERT(suboid_buf_len);
732 proto_tree_add_oid(pt_name,k->hfid,tvb,name_offset, suboid_buf_len, suboid_buf);
734 key_start += suboid_len;
735 key_len -= suboid_len + 1;
736 continue; /* k->next */
745 switch (k->key_type) {
746 case OID_KEY_TYPE_IPADDR:
747 suboid = &(subids[key_start]);
750 case OID_KEY_TYPE_IMPLIED_STRING:
751 case OID_KEY_TYPE_IMPLIED_BYTES:
752 case OID_KEY_TYPE_ETHER:
753 suboid = &(subids[key_start]);
757 buf_len = k->num_subids;
758 suboid = &(subids[key_start]);
768 if( key_len < buf_len ) {
769 proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index string should not be longer than remaining oid size");
770 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index string longer than remaining oid size");
771 oid_info_is_ok = FALSE;
775 buf = ep_alloc(buf_len+1);
776 for (i = 0; i < buf_len; i++)
777 buf[i] = (guint8)suboid[i];
780 switch(k->key_type) {
781 case OID_KEY_TYPE_STRING:
782 case OID_KEY_TYPE_IMPLIED_STRING:
783 proto_tree_add_string(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
785 case OID_KEY_TYPE_BYTES:
786 case OID_KEY_TYPE_NSAP:
787 case OID_KEY_TYPE_IMPLIED_BYTES:
788 proto_tree_add_bytes(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
790 case OID_KEY_TYPE_ETHER:
791 proto_tree_add_ether(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
793 case OID_KEY_TYPE_IPADDR: {
794 guint32* ipv4_p = (void*)buf;
795 proto_tree_add_ipv4(pt_name,k->hfid,tvb,name_offset,buf_len, *ipv4_p);
798 DISSECTOR_ASSERT_NOT_REACHED();
803 key_start += buf_len;
805 continue; /* k->next*/
811 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");
812 expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
813 oid_info_is_ok = FALSE;
817 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.");
818 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_ERROR, "COLUMS's parent is not a ROW");
819 oid_info_is_ok = FALSE;
823 /* proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"This kind OID should have no value");
824 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "This kind OID should have no value"); */
825 oid_info_is_ok = FALSE;
831 if (oid_info_is_ok && oid_info->value_type) {
832 if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
833 pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,FALSE);
835 if ((oid_info->value_type->ber_class != BER_CLASS_ANY) &&
836 (ber_class != oid_info->value_type->ber_class))
837 format_error = BER_WRONG_TAG;
839 if ((oid_info->value_type->ber_tag != BER_TAG_ANY) &&
840 (tag != oid_info->value_type->ber_tag))
841 format_error = BER_WRONG_TAG;
843 max_len = oid_info->value_type->max_len == -1 ? 0xffffff : oid_info->value_type->max_len;
844 min_len = oid_info->value_type->min_len;
846 if ((int)value_len < min_len || (int)value_len > max_len) {
847 format_error = BER_WRONG_LENGTH;
849 pi_value = proto_tree_add_item(pt_varbind,oid_info->value_hfid,tvb,value_offset,value_len,FALSE);
853 switch(ber_class|(tag<<4)) {
854 case BER_CLASS_UNI|(BER_UNI_TAG_INTEGER<<4):
857 unsigned offset = value_offset;
860 max_len = 5; min_len = 1;
861 if (value_len > (guint)max_len && value_len < (guint)min_len) {
862 format_error = BER_WRONG_LENGTH;
867 /* extend sign bit */
868 if(tvb_get_guint8(tvb, offset)&0x80){
871 for(i=0;i<value_len;i++){
872 val=(val<<8)|tvb_get_guint8(tvb, offset);
876 proto_tree_add_int64(pt_varbind, hf_snmp_integer32_value, tvb,value_offset,value_len, val);
880 case BER_CLASS_UNI|(BER_UNI_TAG_OCTETSTRING<<4):
881 hfid = hf_snmp_octetstring_value;
883 case BER_CLASS_UNI|(BER_UNI_TAG_OID<<4):
884 max_len = -1; min_len = 1;
885 if (value_len < (guint)min_len) format_error = BER_WRONG_LENGTH;
886 hfid = hf_snmp_oid_value;
888 case BER_CLASS_UNI|(BER_UNI_TAG_NULL<<4):
889 max_len = 0; min_len = 0;
890 if (value_len != 0) format_error = BER_WRONG_LENGTH;
891 hfid = hf_snmp_null_value;
893 case BER_CLASS_APP: /* | (SNMP_IPA<<4)*/
895 case 4: hfid = hf_snmp_ipv4_value; break;
896 case 16: hfid = hf_snmp_ipv6_value; break;
897 default: hfid = hf_snmp_anyaddress_value; break;
900 case BER_CLASS_APP|(SNMP_U32<<4):
901 hfid = hf_snmp_unsigned32_value;
903 case BER_CLASS_APP|(SNMP_GGE<<4):
904 hfid = hf_snmp_gauge32_value;
906 case BER_CLASS_APP|(SNMP_CNT<<4):
907 hfid = hf_snmp_counter_value;
909 case BER_CLASS_APP|(SNMP_TIT<<4):
910 hfid = hf_snmp_timeticks_value;
912 case BER_CLASS_APP|(SNMP_OPQ<<4):
913 hfid = hf_snmp_opaque_value;
915 case BER_CLASS_APP|(SNMP_NSP<<4):
916 hfid = hf_snmp_nsap_value;
918 case BER_CLASS_APP|(SNMP_C64<<4):
919 hfid = hf_snmp_big_counter_value;
922 hfid = hf_snmp_unknown_value;
926 if (format_error != BER_NO_ERROR) {
927 pi_value = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,FALSE);
928 expert_add_info_format(actx->pinfo, pi_value, PI_UNDECODED, PI_NOTE, "Unresolved value, Missing MIB");
932 oid_info_is_ok = FALSE;
935 pt_value = proto_item_add_subtree(pi_value,ett_value);
937 if (value_len > 0 && oid_string) {
938 tvbuff_t* sub_tvb = tvb_new_subset(tvb, value_offset, value_len, value_len);
940 next_tvb_add_string(&var_list, sub_tvb, (snmp_var_in_tree) ? pt_value : NULL, value_sub_dissectors_table, oid_string);
945 if (pi_value) proto_item_fill_label(PITEM_FINFO(pi_value), label);
947 if (oid_info && oid_info->name) {
949 repr = ep_strdup_printf("%s.%s (%s)",
951 oid_subid2string(&(subids[oid_matched]),oid_left),
952 oid_subid2string(subids,oid_matched+oid_left));
953 info_oid = ep_strdup_printf("%s.%s", oid_info->name,
954 oid_subid2string(&(subids[oid_matched]),oid_left));
956 repr = ep_strdup_printf("%s (%s)",
958 oid_subid2string(subids,oid_matched));
959 info_oid = oid_info->name;
961 } else if (oid_string) {
962 repr = ep_strdup(oid_string);
963 info_oid = oid_string;
965 repr = ep_strdup("[Bad OID]");
968 valstr = strstr(label,": ");
969 valstr = valstr ? valstr+2 : label;
971 proto_item_set_text(pi_varbind,"%s: %s",repr,valstr);
973 if (display_oid && info_oid) {
974 col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", info_oid);
977 switch (format_error) {
978 case BER_WRONG_LENGTH: {
979 proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
980 proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong value length: %u expecting: %u <= len <= %u",
983 max_len == -1 ? 0xFFFFFF : max_len);
984 pt = proto_item_add_subtree(pi,ett_decoding_error);
985 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong length for SNMP VarBind/value");
986 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
988 case BER_WRONG_TAG: {
989 proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
990 proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong class/tag for Value expected: %d,%d got: %d,%d",
991 oid_info->value_type->ber_class,
992 oid_info->value_type->ber_tag,
995 pt = proto_item_add_subtree(pi,ett_decoding_error);
996 expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong class/tag for SNMP VarBind/value");
997 return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
1003 return seq_offset + seq_len;
1007 #define F_SNMP_ENGINEID_CONFORM 0x80
1008 #define SNMP_ENGINEID_RFC1910 0x00
1009 #define SNMP_ENGINEID_RFC3411 0x01
1011 static const true_false_string tfs_snmp_engineid_conform = {
1013 "RFC1910 (Non-SNMPv3)"
1016 #define SNMP_ENGINEID_FORMAT_IPV4 0x01
1017 #define SNMP_ENGINEID_FORMAT_IPV6 0x02
1018 #define SNMP_ENGINEID_FORMAT_MACADDRESS 0x03
1019 #define SNMP_ENGINEID_FORMAT_TEXT 0x04
1020 #define SNMP_ENGINEID_FORMAT_OCTETS 0x05
1022 static const value_string snmp_engineid_format_vals[] = {
1023 { SNMP_ENGINEID_FORMAT_IPV4, "IPv4 address" },
1024 { SNMP_ENGINEID_FORMAT_IPV6, "IPv6 address" },
1025 { SNMP_ENGINEID_FORMAT_MACADDRESS, "MAC address" },
1026 { SNMP_ENGINEID_FORMAT_TEXT, "Text, administratively assigned" },
1027 { SNMP_ENGINEID_FORMAT_OCTETS, "Octets, administratively assigned" },
1031 #define SNMP_ENGINEID_CISCO_AGENT 0x00
1032 #define SNMP_ENGINEID_CISCO_MANAGER 0x01
1034 static const value_string snmp_engineid_cisco_type_vals[] = {
1035 { SNMP_ENGINEID_CISCO_AGENT, "Agent" },
1036 { SNMP_ENGINEID_CISCO_MANAGER, "Manager" },
1041 * SNMP Engine ID dissection according to RFC 3411 (SnmpEngineID TC)
1042 * or historic RFC 1910 (AgentID)
1044 int dissect_snmp_engineid(proto_tree *tree, tvbuff_t *tvb, int offset, int len) {
1045 proto_item *item = NULL;
1046 guint8 conformance, format;
1047 guint32 enterpriseid, seconds;
1049 int len_remain = len;
1051 /* first bit: engine id conformance */
1052 if (len_remain<4) return offset;
1053 conformance = ((tvb_get_guint8(tvb, offset)>>7) & 0x01);
1054 proto_tree_add_item(tree, hf_snmp_engineid_conform, tvb, offset, 1, FALSE);
1056 /* 4-byte enterprise number/name */
1057 if (len_remain<4) return offset;
1058 enterpriseid = tvb_get_ntohl(tvb, offset);
1060 enterpriseid -= 0x80000000; /* ignore first bit */
1061 proto_tree_add_uint(tree, hf_snmp_engineid_enterprise, tvb, offset, 4, enterpriseid);
1065 switch(conformance) {
1067 case SNMP_ENGINEID_RFC1910:
1068 /* 12-byte AgentID w/ 8-byte trailer */
1069 if (len_remain==8) {
1070 proto_tree_add_text(tree, tvb, offset, 8, "AgentID Trailer: 0x%s",
1071 tvb_bytes_to_str(tvb, offset, 8));
1075 proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC1910>");
1080 case SNMP_ENGINEID_RFC3411: /* variable length: 5..32 */
1082 /* 1-byte format specifier */
1083 if (len_remain<1) return offset;
1084 format = tvb_get_guint8(tvb, offset);
1085 item = proto_tree_add_uint_format(tree, hf_snmp_engineid_format, tvb, offset, 1, format, "Engine ID Format: %s (%d)",
1086 val_to_str(format, snmp_engineid_format_vals, "Reserved/Enterprise-specific"), format);
1091 case SNMP_ENGINEID_FORMAT_IPV4:
1092 /* 4-byte IPv4 address */
1093 if (len_remain==4) {
1094 proto_tree_add_item(tree, hf_snmp_engineid_ipv4, tvb, offset, 4, FALSE);
1099 case SNMP_ENGINEID_FORMAT_IPV6:
1100 /* 16-byte IPv6 address */
1101 if (len_remain==16) {
1102 proto_tree_add_item(tree, hf_snmp_engineid_ipv6, tvb, offset, 16, FALSE);
1107 case SNMP_ENGINEID_FORMAT_MACADDRESS:
1108 /* See: https://supportforums.cisco.com/message/3010617#3010617 for details. */
1109 if ((enterpriseid==9)&&(len_remain==7)) {
1110 proto_tree_add_item(tree, hf_snmp_engineid_cisco_type, tvb, offset, 1, FALSE);
1114 /* 6-byte MAC address */
1115 if (len_remain==6) {
1116 proto_tree_add_item(tree, hf_snmp_engineid_mac, tvb, offset, 6, FALSE);
1121 case SNMP_ENGINEID_FORMAT_TEXT:
1122 /* max. 27-byte string, administratively assigned */
1123 if (len_remain<=27) {
1124 proto_tree_add_item(tree, hf_snmp_engineid_text, tvb, offset, len_remain, FALSE);
1130 /* most common enterprise-specific format: (ucd|net)-snmp random */
1131 if ((enterpriseid==2021)||(enterpriseid==8072)) {
1132 proto_item_append_text(item, (enterpriseid==2021) ? ": UCD-SNMP Random" : ": Net-SNMP Random");
1133 /* demystify: 4B random, 4B epoch seconds */
1134 if (len_remain==8) {
1135 proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, 4, FALSE);
1136 seconds = tvb_get_letohl(tvb, offset+4);
1139 proto_tree_add_time_format_value(tree, hf_snmp_engineid_time, tvb, offset+4, 4,
1141 abs_time_secs_to_str(seconds, ABSOLUTE_TIME_LOCAL, TRUE));
1147 case SNMP_ENGINEID_FORMAT_OCTETS:
1149 /* max. 27 bytes, administratively assigned or unknown format */
1150 if (len_remain<=27) {
1151 proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, len_remain, FALSE);
1160 proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC3411>");
1167 static void set_ue_keys(snmp_ue_assoc_t* n ) {
1168 guint key_size = n->user.authModel->key_size;
1170 n->user.authKey.data = se_alloc(key_size);
1171 n->user.authKey.len = key_size;
1172 n->user.authModel->pass2key(n->user.authPassword.data,
1173 n->user.authPassword.len,
1176 n->user.authKey.data);
1178 n->user.privKey.data = se_alloc(key_size);
1179 n->user.privKey.len = key_size;
1180 n->user.authModel->pass2key(n->user.privPassword.data,
1181 n->user.privPassword.len,
1184 n->user.privKey.data);
1187 static snmp_ue_assoc_t* ue_se_dup(snmp_ue_assoc_t* o) {
1188 snmp_ue_assoc_t* d = se_memdup(o,sizeof(snmp_ue_assoc_t));
1190 d->user.authModel = o->user.authModel;
1192 d->user.privProtocol = o->user.privProtocol;
1194 d->user.userName.data = se_memdup(o->user.userName.data,o->user.userName.len);
1195 d->user.userName.len = o->user.userName.len;
1197 d->user.authPassword.data = o->user.authPassword.data ? se_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
1198 d->user.authPassword.len = o->user.authPassword.len;
1200 d->user.privPassword.data = o->user.privPassword.data ? se_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
1201 d->user.privPassword.len = o->user.privPassword.len;
1203 d->engine.len = o->engine.len;
1205 if (d->engine.len) {
1206 d->engine.data = se_memdup(o->engine.data,o->engine.len);
1215 #define CACHE_INSERT(c,a) if (c) { snmp_ue_assoc_t* t = c; c = a; c->next = t; } else { c = a; a->next = NULL; }
1217 static void renew_ue_cache(void) {
1218 localized_ues = NULL;
1219 unlocalized_ues = NULL;
1224 for(i = 0; i < num_ueas; i++) {
1225 snmp_ue_assoc_t* a = ue_se_dup(&(ueas[i]));
1227 if (a->engine.len) {
1228 CACHE_INSERT(localized_ues,a);
1231 CACHE_INSERT(unlocalized_ues,a);
1239 static snmp_ue_assoc_t* localize_ue( snmp_ue_assoc_t* o, const guint8* engine, guint engine_len ) {
1240 snmp_ue_assoc_t* n = se_memdup(o,sizeof(snmp_ue_assoc_t));
1242 n->engine.data = se_memdup(engine,engine_len);
1243 n->engine.len = engine_len;
1251 #define localized_match(a,u,ul,e,el) \
1252 ( a->user.userName.len == ul \
1253 && a->engine.len == el \
1254 && memcmp( a->user.userName.data, u, ul ) == 0 \
1255 && memcmp( a->engine.data, e, el ) == 0 )
1257 #define unlocalized_match(a,u,l) \
1258 ( a->user.userName.len == l && memcmp( a->user.userName.data, u, l) == 0 )
1260 static snmp_ue_assoc_t* get_user_assoc(tvbuff_t* engine_tvb, tvbuff_t* user_tvb) {
1261 static snmp_ue_assoc_t* a;
1262 guint given_username_len;
1263 guint8* given_username;
1264 guint given_engine_len;
1265 guint8* given_engine;
1267 if ( ! (localized_ues || unlocalized_ues ) ) return NULL;
1269 if (! ( user_tvb && engine_tvb ) ) return NULL;
1271 given_username_len = tvb_length_remaining(user_tvb,0);
1272 given_username = ep_tvb_memdup(user_tvb,0,-1);
1273 given_engine_len = tvb_length_remaining(engine_tvb,0);
1274 given_engine = ep_tvb_memdup(engine_tvb,0,-1);
1276 for (a = localized_ues; a; a = a->next) {
1277 if ( localized_match(a, given_username, given_username_len, given_engine, given_engine_len) ) {
1282 for (a = unlocalized_ues; a; a = a->next) {
1283 if ( unlocalized_match(a, given_username, given_username_len) ) {
1284 snmp_ue_assoc_t* n = localize_ue( a, given_engine, given_engine_len );
1285 CACHE_INSERT(localized_ues,n);
1293 static gboolean snmp_usm_auth_md5(snmp_usm_params_t* p, guint8** calc_auth_p, guint* calc_auth_len_p, gchar const** error) {
1306 *error = "No Authenticator";
1310 key = p->user_assoc->user.authKey.data;
1311 key_len = p->user_assoc->user.authKey.len;
1314 *error = "User has no authKey";
1319 auth_len = tvb_length_remaining(p->auth_tvb,0);
1321 if (auth_len != 12) {
1322 *error = "Authenticator length wrong";
1326 msg_len = tvb_length_remaining(p->msg_tvb,0);
1327 msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
1330 auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
1332 start = p->auth_offset - p->start_offset;
1333 end = start + auth_len;
1335 /* fill the authenticator with zeros */
1336 for ( i = start ; i < end ; i++ ) {
1340 calc_auth = ep_alloc(16);
1342 md5_hmac(msg, msg_len, key, key_len, calc_auth);
1344 if (calc_auth_p) *calc_auth_p = calc_auth;
1345 if (calc_auth_len_p) *calc_auth_len_p = 12;
1347 return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
1351 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_) {
1364 *error = "No Authenticator";
1368 key = p->user_assoc->user.authKey.data;
1369 key_len = p->user_assoc->user.authKey.len;
1372 *error = "User has no authKey";
1377 auth_len = tvb_length_remaining(p->auth_tvb,0);
1380 if (auth_len != 12) {
1381 *error = "Authenticator length wrong";
1385 msg_len = tvb_length_remaining(p->msg_tvb,0);
1386 msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
1388 auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
1390 start = p->auth_offset - p->start_offset;
1391 end = start + auth_len;
1393 /* fill the authenticator with zeros */
1394 for ( i = start ; i < end ; i++ ) {
1398 calc_auth = ep_alloc(20);
1400 sha1_hmac(key, key_len, msg, msg_len, calc_auth);
1402 if (calc_auth_p) *calc_auth_p = calc_auth;
1403 if (calc_auth_len_p) *calc_auth_len_p = 12;
1405 return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
1408 static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData , gchar const** error _U_) {
1409 #ifdef HAVE_LIBGCRYPT
1411 gcry_cipher_hd_t hd = NULL;
1414 guint8* des_key = p->user_assoc->user.privKey.data; /* first 8 bytes */
1415 guint8* pre_iv = &(p->user_assoc->user.privKey.data[8]); /* last 8 bytes */
1420 tvbuff_t* clear_tvb;
1425 salt_len = tvb_length_remaining(p->priv_tvb,0);
1427 if (salt_len != 8) {
1428 *error = "decryptionError: msgPrivacyParameters length != 8";
1432 salt = ep_tvb_memdup(p->priv_tvb,0,salt_len);
1435 The resulting "salt" is XOR-ed with the pre-IV to obtain the IV.
1437 for (i=0; i<8; i++) {
1438 iv[i] = pre_iv[i] ^ salt[i];
1441 cryptgrm_len = tvb_length_remaining(encryptedData,0);
1443 if (cryptgrm_len % 8) {
1444 *error = "decryptionError: the length of the encrypted data is not a mutiple of 8 octets";
1448 cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
1450 cleartext = ep_alloc(cryptgrm_len);
1452 err = gcry_cipher_open(&hd, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_CBC, 0);
1453 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1455 err = gcry_cipher_setiv(hd, iv, 8);
1456 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1458 err = gcry_cipher_setkey(hd,des_key,8);
1459 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1461 err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1462 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1464 gcry_cipher_close(hd);
1466 clear_tvb = tvb_new_child_real_data(encryptedData, cleartext, cryptgrm_len, cryptgrm_len);
1471 *error = (void*)gpg_strerror(err);
1472 if (hd) gcry_cipher_close(hd);
1475 *error = "libgcrypt not present, cannot decrypt";
1480 static tvbuff_t* snmp_usm_priv_aes(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData , gchar const** error _U_) {
1481 #ifdef HAVE_LIBGCRYPT
1483 gcry_cipher_hd_t hd = NULL;
1486 guint8* aes_key = p->user_assoc->user.privKey.data; /* first 16 bytes */
1491 tvbuff_t* clear_tvb;
1493 priv_len = tvb_length_remaining(p->priv_tvb,0);
1495 if (priv_len != 8) {
1496 *error = "decryptionError: msgPrivacyParameters length != 8";
1500 iv[0] = (p->boots & 0xff000000) >> 24;
1501 iv[1] = (p->boots & 0x00ff0000) >> 16;
1502 iv[2] = (p->boots & 0x0000ff00) >> 8;
1503 iv[3] = (p->boots & 0x000000ff);
1504 iv[4] = (p->time & 0xff000000) >> 24;
1505 iv[5] = (p->time & 0x00ff0000) >> 16;
1506 iv[6] = (p->time & 0x0000ff00) >> 8;
1507 iv[7] = (p->time & 0x000000ff);
1508 tvb_memcpy(p->priv_tvb,&(iv[8]),0,8);
1510 cryptgrm_len = tvb_length_remaining(encryptedData,0);
1511 cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
1513 cleartext = ep_alloc(cryptgrm_len);
1515 err = gcry_cipher_open(&hd, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_CFB, 0);
1516 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1518 err = gcry_cipher_setiv(hd, iv, 16);
1519 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1521 err = gcry_cipher_setkey(hd,aes_key,16);
1522 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1524 err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1525 if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1527 gcry_cipher_close(hd);
1529 clear_tvb = tvb_new_child_real_data(encryptedData, cleartext, cryptgrm_len, cryptgrm_len);
1534 *error = (void*)gpg_strerror(err);
1535 if (hd) gcry_cipher_close(hd);
1538 *error = "libgcrypt not present, cannot decrypt";
1544 gboolean check_ScopedPdu(tvbuff_t* tvb) {
1549 int hoffset, eoffset;
1552 offset = get_ber_identifier(tvb, 0, &class, &pc, &tag);
1553 offset = get_ber_length(tvb, offset, NULL, NULL);
1555 if ( ! (((class!=BER_CLASS_APP) && (class!=BER_CLASS_PRI) )
1556 && ( (!pc) || (class!=BER_CLASS_UNI) || (tag!=BER_UNI_TAG_ENUMERATED) )
1559 if((tvb_get_guint8(tvb, offset)==0)&&(tvb_get_guint8(tvb, offset+1)==0))
1564 offset = get_ber_identifier(tvb, offset, &class, &pc, &tag);
1565 offset = get_ber_length(tvb, offset, &len, NULL);
1566 eoffset = offset + len;
1568 if (eoffset <= hoffset) return FALSE;
1570 if ((class!=BER_CLASS_APP)&&(class!=BER_CLASS_PRI))
1571 if( (class!=BER_CLASS_UNI)
1572 ||((tag<BER_UNI_TAG_NumericString)&&(tag!=BER_UNI_TAG_OCTETSTRING)&&(tag!=BER_UNI_TAG_UTF8String)) )
1580 /*--- Included file: packet-snmp-fn.c ---*/
1581 #line 1 "packet-snmp-fn.c"
1586 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_) {
1590 offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &enterprise_oid);
1593 if (display_oid && enterprise_oid) {
1594 name = oid_resolved_from_string(enterprise_oid);
1596 col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", name);
1608 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_) {
1609 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1618 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_) {
1619 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1620 hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_OCTET_STRING_SIZE_4);
1628 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_) {
1629 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1638 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_) {
1639 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1640 hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_INTEGER_0_4294967295);
1648 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_) {
1649 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1658 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_) {
1659 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
1665 static const value_string snmp_Version_vals[] = {
1675 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_) {
1676 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1685 dissect_snmp_Community(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1686 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
1695 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_) {
1696 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1703 static const value_string snmp_T_error_status_vals[] = {
1706 { 2, "noSuchName" },
1712 { 8, "wrongLength" },
1713 { 9, "wrongEncoding" },
1714 { 10, "wrongValue" },
1715 { 11, "noCreation" },
1716 { 12, "inconsistentValue" },
1717 { 13, "resourceUnavailable" },
1718 { 14, "commitFailed" },
1719 { 15, "undoFailed" },
1720 { 16, "authorizationError" },
1721 { 17, "notWritable" },
1722 { 18, "inconsistentName" },
1728 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_) {
1729 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1738 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_) {
1739 offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
1746 static const ber_sequence_t VarBindList_sequence_of[1] = {
1747 { &hf_snmp_VarBindList_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBind },
1751 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_) {
1752 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
1753 VarBindList_sequence_of, hf_index, ett_snmp_VarBindList);
1759 static const ber_sequence_t PDU_sequence[] = {
1760 { &hf_snmp_request_id , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1761 { &hf_snmp_error_status , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_error_status },
1762 { &hf_snmp_error_index , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
1763 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1764 { NULL, 0, 0, 0, NULL }
1768 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_) {
1769 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1770 PDU_sequence, hf_index, ett_snmp_PDU);
1778 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_) {
1779 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1780 hf_index, BER_CLASS_CON, 0, TRUE, dissect_snmp_PDU);
1788 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_) {
1789 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1790 hf_index, BER_CLASS_CON, 1, TRUE, dissect_snmp_PDU);
1798 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_) {
1799 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1800 hf_index, BER_CLASS_CON, 2, TRUE, dissect_snmp_PDU);
1808 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_) {
1809 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1810 hf_index, BER_CLASS_CON, 3, TRUE, dissect_snmp_PDU);
1816 static const value_string snmp_GenericTrap_vals[] = {
1821 { 4, "authenticationFailure" },
1822 { 5, "egpNeighborLoss" },
1823 { 6, "enterpriseSpecific" },
1829 dissect_snmp_GenericTrap(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1830 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1839 dissect_snmp_SpecificTrap(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
1841 guint specific_trap;
1843 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1847 if (generic_trap == 6) { /* enterprise specific */
1848 const gchar *specific_str = snmp_lookup_specific_trap (specific_trap);
1850 proto_item_append_text(actx->created_item, " (%s)", specific_str);
1859 static const ber_sequence_t Trap_PDU_U_sequence[] = {
1860 { &hf_snmp_enterprise , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_EnterpriseOID },
1861 { &hf_snmp_agent_addr , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_NetworkAddress },
1862 { &hf_snmp_generic_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_GenericTrap },
1863 { &hf_snmp_specific_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_SpecificTrap },
1864 { &hf_snmp_time_stamp , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_TimeTicks },
1865 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1866 { NULL, 0, 0, 0, NULL }
1870 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_) {
1873 enterprise_oid = NULL;
1875 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1876 Trap_PDU_U_sequence, hf_index, ett_snmp_Trap_PDU_U);
1887 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_) {
1888 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1889 hf_index, BER_CLASS_CON, 4, TRUE, dissect_snmp_Trap_PDU_U);
1897 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_) {
1898 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
1905 static const ber_sequence_t BulkPDU_sequence[] = {
1906 { &hf_snmp_bulkPDU_request_id, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Integer32 },
1907 { &hf_snmp_non_repeaters , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
1908 { &hf_snmp_max_repetitions, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
1909 { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
1910 { NULL, 0, 0, 0, NULL }
1914 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_) {
1915 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
1916 BulkPDU_sequence, hf_index, ett_snmp_BulkPDU);
1924 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_) {
1925 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1926 hf_index, BER_CLASS_CON, 5, TRUE, dissect_snmp_BulkPDU);
1934 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_) {
1935 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1936 hf_index, BER_CLASS_CON, 6, TRUE, dissect_snmp_PDU);
1944 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_) {
1945 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1946 hf_index, BER_CLASS_CON, 7, TRUE, dissect_snmp_PDU);
1954 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_) {
1955 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
1956 hf_index, BER_CLASS_CON, 8, TRUE, dissect_snmp_PDU);
1962 static const value_string snmp_PDUs_vals[] = {
1963 { 0, "get-request" },
1964 { 1, "get-next-request" },
1965 { 2, "get-response" },
1966 { 3, "set-request" },
1968 { 5, "getBulkRequest" },
1969 { 6, "informRequest" },
1970 { 7, "sNMPv2-Trap" },
1975 static const ber_choice_t PDUs_choice[] = {
1976 { 0, &hf_snmp_get_request , BER_CLASS_CON, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_GetRequest_PDU },
1977 { 1, &hf_snmp_get_next_request, BER_CLASS_CON, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_GetNextRequest_PDU },
1978 { 2, &hf_snmp_get_response , BER_CLASS_CON, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_GetResponse_PDU },
1979 { 3, &hf_snmp_set_request , BER_CLASS_CON, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_SetRequest_PDU },
1980 { 4, &hf_snmp_trap , BER_CLASS_CON, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_Trap_PDU },
1981 { 5, &hf_snmp_getBulkRequest , BER_CLASS_CON, 5, BER_FLAGS_NOOWNTAG, dissect_snmp_GetBulkRequest_PDU },
1982 { 6, &hf_snmp_informRequest , BER_CLASS_CON, 6, BER_FLAGS_NOOWNTAG, dissect_snmp_InformRequest_PDU },
1983 { 7, &hf_snmp_sNMPv2_Trap , BER_CLASS_CON, 7, BER_FLAGS_NOOWNTAG, dissect_snmp_SNMPv2_Trap_PDU },
1984 { 8, &hf_snmp_report , BER_CLASS_CON, 8, BER_FLAGS_NOOWNTAG, dissect_snmp_Report_PDU },
1985 { 0, NULL, 0, 0, 0, NULL }
1989 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_) {
1993 col_clear(actx->pinfo->cinfo, COL_INFO);
1995 offset = dissect_ber_choice(actx, tree, tvb, offset,
1996 PDUs_choice, hf_index, ett_snmp_PDUs,
1999 if( (pdu_type!=-1) && snmp_PDUs_vals[pdu_type].strptr ){
2000 col_prepend_fstr(actx->pinfo->cinfo, COL_INFO, "%s", snmp_PDUs_vals[pdu_type].strptr);
2009 static const ber_sequence_t Message_sequence[] = {
2010 { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
2011 { &hf_snmp_community , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_Community },
2012 { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
2013 { NULL, 0, 0, 0, NULL }
2017 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_) {
2018 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2019 Message_sequence, hf_index, ett_snmp_Message);
2027 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_) {
2028 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2035 static const value_string snmp_T_datav2u_vals[] = {
2041 static const ber_choice_t T_datav2u_choice[] = {
2042 { 0, &hf_snmp_v2u_plaintext , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
2043 { 1, &hf_snmp_encrypted , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2044 { 0, NULL, 0, 0, 0, NULL }
2048 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_) {
2049 offset = dissect_ber_choice(actx, tree, tvb, offset,
2050 T_datav2u_choice, hf_index, ett_snmp_T_datav2u,
2057 static const ber_sequence_t Messagev2u_sequence[] = {
2058 { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
2059 { &hf_snmp_parameters , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2060 { &hf_snmp_datav2u , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_T_datav2u },
2061 { NULL, 0, 0, 0, NULL }
2065 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_) {
2066 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2067 Messagev2u_sequence, hf_index, ett_snmp_Messagev2u);
2075 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_) {
2077 tvbuff_t* param_tvb = NULL;
2079 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2082 proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
2083 dissect_snmp_engineid(engine_tree, param_tvb, 0, tvb_length_remaining(param_tvb,0));
2094 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_) {
2097 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2099 if (usm_p.engine_tvb) {
2100 proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
2101 dissect_snmp_engineid(engine_tree, usm_p.engine_tvb, 0, tvb_length_remaining(usm_p.engine_tvb,0));
2112 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_) {
2113 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2122 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_) {
2123 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2132 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_) {
2133 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2142 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_) {
2143 #line 112 "snmp.cnf"
2144 offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_index, &usm_p.auth_tvb);
2145 if (usm_p.auth_tvb) {
2146 usm_p.auth_item = actx->created_item;
2147 usm_p.auth_offset = tvb_offset_from_real_beginning(usm_p.auth_tvb);
2157 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_) {
2158 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2165 static const ber_sequence_t UsmSecurityParameters_sequence[] = {
2166 { &hf_snmp_msgAuthoritativeEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineID },
2167 { &hf_snmp_msgAuthoritativeEngineBoots, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineBoots },
2168 { &hf_snmp_msgAuthoritativeEngineTime, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineTime },
2169 { &hf_snmp_msgUserName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgUserName },
2170 { &hf_snmp_msgAuthenticationParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthenticationParameters },
2171 { &hf_snmp_msgPrivacyParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgPrivacyParameters },
2172 { NULL, 0, 0, 0, NULL }
2176 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_) {
2177 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2178 UsmSecurityParameters_sequence, hf_index, ett_snmp_UsmSecurityParameters);
2186 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_) {
2187 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2196 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_) {
2197 #line 227 "snmp.cnf"
2198 tvbuff_t *parameter_tvb = NULL;
2200 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2204 guint8 v3_flags = tvb_get_guint8(parameter_tvb, 0);
2205 proto_tree* flags_tree = proto_item_add_subtree(actx->created_item,ett_msgFlags);
2207 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_report, parameter_tvb, 0, 1, FALSE);
2208 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_crypt, parameter_tvb, 0, 1, FALSE);
2209 proto_tree_add_item(flags_tree, hf_snmp_v3_flags_auth, parameter_tvb, 0, 1, FALSE);
2211 usm_p.encrypted = v3_flags & TH_CRYPT ? TRUE : FALSE;
2212 usm_p.authenticated = v3_flags & TH_AUTH ? TRUE : FALSE;
2224 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_) {
2225 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2232 static const ber_sequence_t HeaderData_sequence[] = {
2233 { &hf_snmp_msgID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
2234 { &hf_snmp_msgMaxSize , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_484_2147483647 },
2235 { &hf_snmp_msgFlags , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgFlags },
2236 { &hf_snmp_msgSecurityModel, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityModel },
2237 { NULL, 0, 0, 0, NULL }
2241 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_) {
2242 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2243 HeaderData_sequence, hf_index, ett_snmp_HeaderData);
2251 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_) {
2252 #line 170 "snmp.cnf"
2254 switch(MsgSecurityModel){
2255 case SNMP_SEC_USM: /* 3 */
2256 offset = dissect_snmp_UsmSecurityParameters(FALSE, tvb, offset+2, actx, tree, -1);
2257 usm_p.user_assoc = get_user_assoc(usm_p.engine_tvb, usm_p.user_tvb);
2259 case SNMP_SEC_ANY: /* 0 */
2260 case SNMP_SEC_V1: /* 1 */
2261 case SNMP_SEC_V2C: /* 2 */
2263 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2275 static const ber_sequence_t ScopedPDU_sequence[] = {
2276 { &hf_snmp_contextEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_SnmpEngineID },
2277 { &hf_snmp_contextName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2278 { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
2279 { NULL, 0, 0, 0, NULL }
2283 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_) {
2284 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2285 ScopedPDU_sequence, hf_index, ett_snmp_ScopedPDU);
2293 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_) {
2294 #line 121 "snmp.cnf"
2295 tvbuff_t* crypt_tvb;
2296 offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_snmp_encryptedPDU, &crypt_tvb);
2298 if( usm_p.encrypted && crypt_tvb
2300 && usm_p.user_assoc->user.privProtocol ) {
2302 const gchar* error = NULL;
2303 proto_tree* encryptedpdu_tree = proto_item_add_subtree(actx->created_item,ett_encryptedPDU);
2304 tvbuff_t* cleartext_tvb = usm_p.user_assoc->user.privProtocol(&usm_p, crypt_tvb, &error );
2306 if (! cleartext_tvb) {
2307 proto_item* cause = proto_tree_add_text(encryptedpdu_tree, crypt_tvb, 0, -1,
2308 "Failed to decrypt encryptedPDU: %s", error);
2310 expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
2311 "Failed to decrypt encryptedPDU: %s", error);
2313 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Failed to decrypt");
2317 proto_item* decrypted_item;
2318 proto_tree* decrypted_tree;
2320 if (! check_ScopedPdu(cleartext_tvb)) {
2321 proto_item* cause = proto_tree_add_text(encryptedpdu_tree, cleartext_tvb, 0, -1,
2322 "Decrypted data not formatted as expected, wrong key?");
2324 expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
2325 "Decrypted data not formatted as expected");
2327 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Decrypted data not formatted as expected");
2333 add_new_data_source(actx->pinfo, cleartext_tvb, "Decrypted ScopedPDU");
2335 decrypted_item = proto_tree_add_item(encryptedpdu_tree, hf_snmp_decryptedPDU,cleartext_tvb,0,-1,FALSE);
2336 decrypted_tree = proto_item_add_subtree(decrypted_item,ett_decrypted);
2337 dissect_snmp_ScopedPDU(FALSE, cleartext_tvb, 0, actx, decrypted_tree, -1);
2340 col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: privKey Unknown");
2349 static const value_string snmp_ScopedPduData_vals[] = {
2351 { 1, "encryptedPDU" },
2355 static const ber_choice_t ScopedPduData_choice[] = {
2356 { 0, &hf_snmp_plaintext , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_ScopedPDU },
2357 { 1, &hf_snmp_encryptedPDU , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_encryptedPDU },
2358 { 0, NULL, 0, 0, 0, NULL }
2362 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_) {
2363 offset = dissect_ber_choice(actx, tree, tvb, offset,
2364 ScopedPduData_choice, hf_index, ett_snmp_ScopedPduData,
2371 static const ber_sequence_t SNMPv3Message_sequence[] = {
2372 { &hf_snmp_msgVersion , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
2373 { &hf_snmp_msgGlobalData , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_HeaderData },
2374 { &hf_snmp_msgSecurityParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityParameters },
2375 { &hf_snmp_msgData , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_ScopedPduData },
2376 { NULL, 0, 0, 0, NULL }
2380 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_) {
2381 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2382 SNMPv3Message_sequence, hf_index, ett_snmp_SNMPv3Message);
2384 #line 185 "snmp.cnf"
2386 if( usm_p.authenticated
2388 && usm_p.user_assoc->user.authModel ) {
2389 const gchar* error = NULL;
2390 proto_item* authen_item;
2391 proto_tree* authen_tree = proto_item_add_subtree(usm_p.auth_item,ett_authParameters);
2393 guint calc_auth_len;
2395 usm_p.authOK = usm_p.user_assoc->user.authModel->authenticate( &usm_p, &calc_auth, &calc_auth_len, &error );
2398 authen_item = proto_tree_add_text(authen_tree,tvb,0,0,"Error while verifying Message authenticity: %s", error);
2399 PROTO_ITEM_SET_GENERATED(authen_item);
2400 expert_add_info_format( actx->pinfo, authen_item, PI_MALFORMED, PI_ERROR, "Error while verifying Message authenticity: %s", error );
2405 authen_item = proto_tree_add_boolean(authen_tree, hf_snmp_msgAuthentication, tvb, 0, 0, usm_p.authOK);
2406 PROTO_ITEM_SET_GENERATED(authen_item);
2409 msg = "SNMP Authentication OK";
2412 gchar* calc_auth_str = bytestring_to_str(calc_auth,calc_auth_len,' ');
2413 proto_item_append_text(authen_item, " calculated = %s", calc_auth_str);
2414 msg = "SNMP Authentication Error";
2418 expert_add_info_format( actx->pinfo, authen_item, PI_CHECKSUM, severity, "%s", msg );
2427 static const value_string snmp_T_smux_version_vals[] = {
2434 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_) {
2435 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2444 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_) {
2445 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
2453 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_) {
2454 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2461 static const ber_sequence_t SimpleOpen_U_sequence[] = {
2462 { &hf_snmp_smux_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_smux_version },
2463 { &hf_snmp_identity , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_OBJECT_IDENTIFIER },
2464 { &hf_snmp_description , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_DisplayString },
2465 { &hf_snmp_password , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
2466 { NULL, 0, 0, 0, NULL }
2470 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_) {
2471 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2472 SimpleOpen_U_sequence, hf_index, ett_snmp_SimpleOpen_U);
2480 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_) {
2481 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2482 hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_SimpleOpen_U);
2488 static const value_string snmp_OpenPDU_vals[] = {
2489 { 0, "smux-simple" },
2493 static const ber_choice_t OpenPDU_choice[] = {
2494 { 0, &hf_snmp_smux_simple , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_SimpleOpen },
2495 { 0, NULL, 0, 0, 0, NULL }
2499 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_) {
2500 offset = dissect_ber_choice(actx, tree, tvb, offset,
2501 OpenPDU_choice, hf_index, ett_snmp_OpenPDU,
2508 static const value_string snmp_ClosePDU_U_vals[] = {
2510 { 1, "unsupportedVersion" },
2511 { 2, "packetFormat" },
2512 { 3, "protocolError" },
2513 { 4, "internalError" },
2514 { 5, "authenticationFailure" },
2520 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_) {
2521 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2530 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_) {
2531 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2532 hf_index, BER_CLASS_APP, 1, TRUE, dissect_snmp_ClosePDU_U);
2540 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_) {
2541 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2548 static const value_string snmp_T_operation_vals[] = {
2557 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_) {
2558 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2565 static const ber_sequence_t RReqPDU_U_sequence[] = {
2566 { &hf_snmp_subtree , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_ObjectName },
2567 { &hf_snmp_priority , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_M1_2147483647 },
2568 { &hf_snmp_operation , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_operation },
2569 { NULL, 0, 0, 0, NULL }
2573 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_) {
2574 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2575 RReqPDU_U_sequence, hf_index, ett_snmp_RReqPDU_U);
2583 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_) {
2584 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2585 hf_index, BER_CLASS_APP, 2, TRUE, dissect_snmp_RReqPDU_U);
2591 static const value_string snmp_RRspPDU_U_vals[] = {
2598 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_) {
2599 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2608 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_) {
2609 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2610 hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_RRspPDU_U);
2616 static const value_string snmp_RegisterResponse_vals[] = {
2622 static const ber_choice_t RegisterResponse_choice[] = {
2623 { 0, &hf_snmp_rRspPDU , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_RRspPDU },
2624 { 1, &hf_snmp_pDUs , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
2625 { 0, NULL, 0, 0, 0, NULL }
2629 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_) {
2630 offset = dissect_ber_choice(actx, tree, tvb, offset,
2631 RegisterResponse_choice, hf_index, ett_snmp_RegisterResponse,
2638 static const value_string snmp_SOutPDU_U_vals[] = {
2646 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_) {
2647 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2656 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_) {
2657 offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2658 hf_index, BER_CLASS_APP, 4, TRUE, dissect_snmp_SOutPDU_U);
2664 static const value_string snmp_SMUX_PDUs_vals[] = {
2667 { 2, "registerRequest" },
2668 { 3, "registerResponse" },
2669 { 4, "commitOrRollback" },
2673 static const ber_choice_t SMUX_PDUs_choice[] = {
2674 { 0, &hf_snmp_open , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_OpenPDU },
2675 { 1, &hf_snmp_close , BER_CLASS_APP, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_ClosePDU },
2676 { 2, &hf_snmp_registerRequest, BER_CLASS_APP, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_RReqPDU },
2677 { 3, &hf_snmp_registerResponse, BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_RegisterResponse },
2678 { 4, &hf_snmp_commitOrRollback, BER_CLASS_APP, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_SOutPDU },
2679 { 0, NULL, 0, 0, 0, NULL }
2683 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_) {
2684 offset = dissect_ber_choice(actx, tree, tvb, offset,
2685 SMUX_PDUs_choice, hf_index, ett_snmp_SMUX_PDUs,
2693 static void dissect_SMUX_PDUs_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
2694 asn1_ctx_t asn1_ctx;
2695 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
2696 dissect_snmp_SMUX_PDUs(FALSE, tvb, 0, &asn1_ctx, tree, hf_snmp_SMUX_PDUs_PDU);
2700 /*--- End of included file: packet-snmp-fn.c ---*/
2701 #line 1478 "packet-snmp-template.c"
2705 dissect_snmp_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
2706 proto_tree *tree, int proto, gint ett, gboolean is_tcp)
2709 guint length_remaining;
2711 gboolean pc, ind = 0;
2714 guint message_length;
2715 int start_offset = offset;
2716 guint32 version = 0;
2719 proto_tree *snmp_tree = NULL;
2720 proto_item *item = NULL;
2721 asn1_ctx_t asn1_ctx;
2722 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
2725 usm_p.msg_tvb = tvb;
2726 usm_p.start_offset = tvb_offset_from_real_beginning(tvb);
2727 usm_p.engine_tvb = NULL;
2728 usm_p.user_tvb = NULL;
2729 usm_p.auth_item = NULL;
2730 usm_p.auth_tvb = NULL;
2731 usm_p.auth_offset = 0;
2732 usm_p.priv_tvb = NULL;
2733 usm_p.user_assoc = NULL;
2734 usm_p.authenticated = FALSE;
2735 usm_p.encrypted = FALSE;
2738 usm_p.authOK = FALSE;
2741 * This will throw an exception if we don't have any data left.
2742 * That's what we want. (See "tcp_dissect_pdus()", which is
2743 * similar, but doesn't have to deal with ASN.1.
2744 * XXX - can we make "tcp_dissect_pdus()" provide enough
2745 * information to the "get_pdu_len" routine so that we could
2746 * have that routine deal with ASN.1, and just use
2747 * "tcp_dissect_pdus()"?)
2749 length_remaining = tvb_ensure_length_remaining(tvb, offset);
2751 /* NOTE: we have to parse the message piece by piece, since the
2752 * capture length may be less than the message length: a 'global'
2753 * parsing is likely to fail.
2757 * If this is SNMP-over-TCP, we might have to do reassembly
2758 * in order to read the "Sequence Of" header.
2760 if (is_tcp && snmp_desegment && pinfo->can_desegment) {
2762 * This is TCP, and we should, and can, do reassembly.
2764 * Is the "Sequence Of" header split across segment
2765 * boundaries? We requre at least 6 bytes for the
2766 * header, which allows for a 4-byte length (ASN.1
2769 if (length_remaining < 6) {
2770 pinfo->desegment_offset = offset;
2771 pinfo->desegment_len = 6 - length_remaining;
2774 * Return 0, which means "I didn't dissect anything
2775 * because I don't have enough data - we need
2783 * OK, try to read the "Sequence Of" header; this gets the total
2784 * length of the SNMP message.
2786 /* Set tree to 0 to not display internal BER fields if option used.*/
2787 offset = dissect_ber_identifier(pinfo, 0, tvb, offset, &class, &pc, &tag);
2788 /*Get the total octet length of the SNMP data*/
2789 offset = dissect_ber_length(pinfo, 0, tvb, offset, &len, &ind);
2790 message_length = len + 2;
2792 /*Get the SNMP version data*/
2793 offset = dissect_ber_integer(FALSE, &asn1_ctx, 0, tvb, offset, -1, &version);
2797 * If this is SNMP-over-TCP, we might have to do reassembly
2798 * to get all of this message.
2800 if (is_tcp && snmp_desegment && pinfo->can_desegment) {
2802 * Yes - is the message split across segment boundaries?
2804 if (length_remaining < message_length) {
2806 * Yes. Tell the TCP dissector where the data
2807 * for this message starts in the data it handed
2808 * us, and how many more bytes we need, and
2811 pinfo->desegment_offset = start_offset;
2812 pinfo->desegment_len =
2813 message_length - length_remaining;
2816 * Return 0, which means "I didn't dissect anything
2817 * because I don't have enough data - we need
2824 next_tvb_init(&var_list);
2826 col_set_str(pinfo->cinfo, COL_PROTOCOL,
2827 proto_get_protocol_short_name(find_protocol_by_id(proto)));
2830 item = proto_tree_add_item(tree, proto, tvb, start_offset,
2831 message_length, FALSE);
2832 snmp_tree = proto_item_add_subtree(item, ett);
2838 offset = dissect_snmp_Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2841 offset = dissect_snmp_Messagev2u(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2845 offset = dissect_snmp_SNMPv3Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
2849 * Return the length remaining in the tvbuff, so
2850 * if this is SNMP-over-TCP, our caller thinks there's
2851 * nothing left to dissect.
2853 proto_tree_add_text(snmp_tree, tvb, offset, -1,"Unknown version");
2854 return length_remaining;
2858 /* There may be appended data after the SNMP data, so treat as raw
2859 * data which needs to be dissected in case of UDP as UDP is PDU oriented.
2861 if((!is_tcp) && (length_remaining > (guint)offset)) {
2862 next_tvb = tvb_new_subset_remaining(tvb, offset);
2863 call_dissector(data_handle, next_tvb, pinfo, tree);
2866 next_tvb_call(&var_list, pinfo, tree, NULL, data_handle);
2873 dissect_snmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2875 conversation_t *conversation;
2884 * See if this looks like SNMP or not. if not, return 0 so
2885 * wireshark can try som other dissector instead.
2887 /* All SNMP packets are BER encoded and consist of a SEQUENCE
2888 * that spans the entire PDU. The first item is an INTEGER that
2889 * has the values 0-2 (version 1-3).
2890 * if not it is not snmp.
2892 /* SNMP starts with a SEQUENCE */
2893 offset = get_ber_identifier(tvb, 0, &tmp_class, &tmp_pc, &tmp_tag);
2894 if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_SEQUENCE)){
2897 /* then comes a length which spans the rest of the tvb */
2898 offset = get_ber_length(tvb, offset, &tmp_length, &tmp_ind);
2899 /* if(tmp_length!=(guint32)tvb_reported_length_remaining(tvb, offset)){
2900 * Losen the heuristic a bit to handle the case where data has intentionally
2901 * been added after the snmp PDU ( UDP case)
2903 if ( pinfo->ptype == PT_UDP ){
2904 if(tmp_length>(guint32)tvb_reported_length_remaining(tvb, offset)){
2908 if(tmp_length!=(guint32)tvb_reported_length_remaining(tvb, offset)){
2912 /* then comes an INTEGER (version)*/
2913 offset = get_ber_identifier(tvb, offset, &tmp_class, &tmp_pc, &tmp_tag);
2914 if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_INTEGER)){
2917 /* do we need to test that version is 0 - 2 (version1-3) ? */
2921 * The first SNMP packet goes to the SNMP port; the second one
2922 * may come from some *other* port, but goes back to the same
2923 * IP address and port as the ones from which the first packet
2924 * came; all subsequent packets presumably go between those two
2925 * IP addresses and ports.
2927 * If this packet went to the SNMP port, we check to see if
2928 * there's already a conversation with one address/port pair
2929 * matching the source IP address and port of this packet,
2930 * the other address matching the destination IP address of this
2931 * packet, and any destination port.
2933 * If not, we create one, with its address 1/port 1 pair being
2934 * the source address/port of this packet, its address 2 being
2935 * the destination address of this packet, and its port 2 being
2936 * wildcarded, and give it the SNMP dissector as a dissector.
2938 if (pinfo->destport == UDP_PORT_SNMP) {
2939 conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
2940 pinfo->srcport, 0, NO_PORT_B);
2941 if( (conversation == NULL) || (conversation->dissector_handle!=snmp_handle) ){
2942 conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
2943 pinfo->srcport, 0, NO_PORT2);
2944 conversation_set_dissector(conversation, snmp_handle);
2948 return dissect_snmp_pdu(tvb, 0, pinfo, tree, proto_snmp, ett_snmp, FALSE);
2951 dissect_snmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2956 while (tvb_reported_length_remaining(tvb, offset) > 0) {
2957 message_len = dissect_snmp_pdu(tvb, 0, pinfo, tree,
2958 proto_snmp, ett_snmp, TRUE);
2959 if (message_len == 0) {
2961 * We don't have all the data for that message,
2962 * so we need to do desegmentation;
2963 * "dissect_snmp_pdu()" has set that up.
2967 offset += message_len;
2972 dissect_smux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2974 proto_tree *smux_tree = NULL;
2975 proto_item *item = NULL;
2977 next_tvb_init(&var_list);
2979 col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMUX");
2982 item = proto_tree_add_item(tree, proto_smux, tvb, 0, -1, FALSE);
2983 smux_tree = proto_item_add_subtree(item, ett_smux);
2986 dissect_SMUX_PDUs_PDU(tvb, pinfo, tree);
2991 MD5 Password to Key Algorithm
2994 static void snmp_usm_password_to_key_md5(const guint8 *password,
2996 const guint8 *engineID,
3000 guint8 *cp, password_buf[64];
3001 guint32 password_index = 0;
3002 guint32 count = 0, i;
3004 md5_init(&MD); /* initialize MD5 */
3006 /**********************************************/
3007 /* Use while loop until we've done 1 Megabyte */
3008 /**********************************************/
3009 while (count < 1048576) {
3011 for (i = 0; i < 64; i++) {
3012 /*************************************************/
3013 /* Take the next octet of the password, wrapping */
3014 /* to the beginning of the password as necessary.*/
3015 /*************************************************/
3016 *cp++ = password[password_index++ % passwordlen];
3018 md5_append(&MD, password_buf, 64);
3021 md5_finish(&MD, key1); /* tell MD5 we're done */
3023 /*****************************************************/
3024 /* Now localize the key with the engineID and pass */
3025 /* through MD5 to produce final key */
3026 /* May want to ensure that engineLength <= 32, */
3027 /* otherwise need to use a buffer larger than 64 */
3028 /*****************************************************/
3031 md5_append(&MD, key1, 16);
3032 md5_append(&MD, engineID, engineLength);
3033 md5_append(&MD, key1, 16);
3034 md5_finish(&MD, key);
3043 SHA1 Password to Key Algorithm COPIED from RFC 3414 A.2.2
3046 static void snmp_usm_password_to_key_sha1(const guint8 *password,
3048 const guint8 *engineID,
3052 guint8 *cp, password_buf[72];
3053 guint32 password_index = 0;
3054 guint32 count = 0, i;
3056 sha1_starts(&SH); /* initialize SHA */
3058 /**********************************************/
3059 /* Use while loop until we've done 1 Megabyte */
3060 /**********************************************/
3061 while (count < 1048576) {
3063 for (i = 0; i < 64; i++) {
3064 /*************************************************/
3065 /* Take the next octet of the password, wrapping */
3066 /* to the beginning of the password as necessary.*/
3067 /*************************************************/
3068 *cp++ = password[password_index++ % passwordlen];
3070 sha1_update (&SH, password_buf, 64);
3073 sha1_finish(&SH, key);
3075 /*****************************************************/
3076 /* Now localize the key with the engineID and pass */
3077 /* through SHA to produce final key */
3078 /* May want to ensure that engineLength <= 32, */
3079 /* otherwise need to use a buffer larger than 72 */
3080 /*****************************************************/
3081 memcpy(password_buf, key, 20);
3082 memcpy(password_buf+20, engineID, engineLength);
3083 memcpy(password_buf+20+engineLength, key, 20);
3086 sha1_update(&SH, password_buf, 40+engineLength);
3087 sha1_finish(&SH, key);
3092 static void process_prefs(void) {
3095 static void* snmp_users_copy_cb(void* dest, const void* orig, unsigned len _U_) {
3096 const snmp_ue_assoc_t* o = orig;
3097 snmp_ue_assoc_t* d = dest;
3099 d->auth_model = o->auth_model;
3100 d->user.authModel = auth_models[o->auth_model];
3102 d->priv_proto = o->priv_proto;
3103 d->user.privProtocol = priv_protos[o->priv_proto];
3105 d->user.userName.data = g_memdup(o->user.userName.data,o->user.userName.len);
3106 d->user.userName.len = o->user.userName.len;
3108 d->user.authPassword.data = o->user.authPassword.data ? g_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
3109 d->user.authPassword.len = o->user.authPassword.len;
3111 d->user.privPassword.data = o->user.privPassword.data ? g_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
3112 d->user.privPassword.len = o->user.privPassword.len;
3114 d->engine.len = o->engine.len;
3115 if (o->engine.data) {
3116 d->engine.data = g_memdup(o->engine.data,o->engine.len);
3119 d->user.authKey.data = o->user.authKey.data ? g_memdup(o->user.authKey.data,o->user.authKey.len) : NULL;
3120 d->user.authKey.len = o->user.authKey.len;
3122 d->user.privKey.data = o->user.privKey.data ? g_memdup(o->user.privKey.data,o->user.privKey.len) : NULL;
3123 d->user.privKey.len = o->user.privKey.len;
3128 static void snmp_users_free_cb(void* p) {
3129 snmp_ue_assoc_t* ue = p;
3130 g_free(ue->user.userName.data);
3131 g_free(ue->user.authPassword.data);
3132 g_free(ue->user.privPassword.data);
3133 g_free(ue->user.authKey.data);
3134 g_free(ue->user.privKey.data);
3135 g_free(ue->engine.data);
3138 static void snmp_users_update_cb(void* p _U_, const char** err) {
3139 snmp_ue_assoc_t* ue = p;
3140 GString* es = g_string_new("");
3146 /* Nothing to update */
3149 if (! ue->user.userName.len)
3150 g_string_append_printf(es,"no userName\n");
3152 for (i=0; i<num_ueas-1; i++) {
3153 snmp_ue_assoc_t* u = &(ueas[i]);
3156 if ( u->user.userName.len == ue->user.userName.len
3157 && u->engine.len == ue->engine.len ) {
3159 if (u->engine.len > 0 && memcmp( u->engine.data, ue->engine.data, u->engine.len ) == 0) {
3160 if ( memcmp( u->user.userName.data, ue->user.userName.data, ue->user.userName.len ) == 0 ) {
3161 /* XXX: make a string for the engineId */
3162 g_string_append_printf(es,"duplicate key (userName='%s')\n",ue->user.userName.data);
3166 if (u->engine.len == 0) {
3167 if ( memcmp( u->user.userName.data, ue->user.userName.data, ue->user.userName.len ) == 0 ) {
3168 g_string_append_printf(es,"duplicate key (userName='%s' engineId=NONE)\n",ue->user.userName.data);
3175 g_string_truncate(es,es->len-2);
3176 *err = ep_strdup(es->str);
3179 g_string_free(es,TRUE);
3185 UAT_LSTRING_CB_DEF(snmp_users,userName,snmp_ue_assoc_t,user.userName.data,user.userName.len)
3186 UAT_LSTRING_CB_DEF(snmp_users,authPassword,snmp_ue_assoc_t,user.authPassword.data,user.authPassword.len)
3187 UAT_LSTRING_CB_DEF(snmp_users,privPassword,snmp_ue_assoc_t,user.privPassword.data,user.privPassword.len)
3188 UAT_BUFFER_CB_DEF(snmp_users,engine_id,snmp_ue_assoc_t,engine.data,engine.len)
3189 UAT_VS_DEF(snmp_users,auth_model,snmp_ue_assoc_t,0,"MD5")
3190 UAT_VS_DEF(snmp_users,priv_proto,snmp_ue_assoc_t,0,"DES")
3193 snmp_specific_trap_copy_cb(void *dest, const void *orig, unsigned len _U_)
3195 snmp_st_assoc_t *u = dest;
3196 const snmp_st_assoc_t *o = orig;
3198 u->enterprise = g_strdup(o->enterprise);
3200 u->desc = g_strdup(o->desc);
3206 snmp_specific_trap_free_cb(void *r)
3208 snmp_st_assoc_t *u = r;
3210 g_free(u->enterprise);
3214 UAT_CSTRING_CB_DEF(specific_traps, enterprise, snmp_st_assoc_t)
3215 UAT_DEC_CB_DEF(specific_traps, trap, snmp_st_assoc_t)
3216 UAT_CSTRING_CB_DEF(specific_traps, desc, snmp_st_assoc_t)
3218 /*--- proto_register_snmp -------------------------------------------*/
3219 void proto_register_snmp(void) {
3220 /* List of fields */
3221 static hf_register_info hf[] = {
3222 { &hf_snmp_v3_flags_auth,
3223 { "Authenticated", "snmp.v3.flags.auth", FT_BOOLEAN, 8,
3224 TFS(&tfs_set_notset), TH_AUTH, NULL, HFILL }},
3225 { &hf_snmp_v3_flags_crypt,
3226 { "Encrypted", "snmp.v3.flags.crypt", FT_BOOLEAN, 8,
3227 TFS(&tfs_set_notset), TH_CRYPT, NULL, HFILL }},
3228 { &hf_snmp_v3_flags_report,
3229 { "Reportable", "snmp.v3.flags.report", FT_BOOLEAN, 8,
3230 TFS(&tfs_set_notset), TH_REPORT, NULL, HFILL }},
3231 { &hf_snmp_engineid_conform, {
3232 "Engine ID Conformance", "snmp.engineid.conform", FT_BOOLEAN, 8,
3233 TFS(&tfs_snmp_engineid_conform), F_SNMP_ENGINEID_CONFORM, "Engine ID RFC3411 Conformance", HFILL }},
3234 { &hf_snmp_engineid_enterprise, {
3235 "Engine Enterprise ID", "snmp.engineid.enterprise", FT_UINT32, BASE_DEC,
3236 VALS(sminmpec_values), 0, NULL, HFILL }},
3237 { &hf_snmp_engineid_format, {
3238 "Engine ID Format", "snmp.engineid.format", FT_UINT8, BASE_DEC,
3239 VALS(snmp_engineid_format_vals), 0, NULL, HFILL }},
3240 { &hf_snmp_engineid_ipv4, {
3241 "Engine ID Data: IPv4 address", "snmp.engineid.ipv4", FT_IPv4, BASE_NONE,
3242 NULL, 0, NULL, HFILL }},
3243 { &hf_snmp_engineid_ipv6, {
3244 "Engine ID Data: IPv6 address", "snmp.engineid.ipv6", FT_IPv6, BASE_NONE,
3245 NULL, 0, NULL, HFILL }},
3246 { &hf_snmp_engineid_cisco_type, {
3247 "Engine ID Data: Cisco type", "snmp.engineid.cisco.type", FT_UINT8, BASE_NONE,
3248 VALS(snmp_engineid_cisco_type_vals), 0, NULL, HFILL }},
3249 { &hf_snmp_engineid_mac, {
3250 "Engine ID Data: MAC address", "snmp.engineid.mac", FT_ETHER, BASE_NONE,
3251 NULL, 0, NULL, HFILL }},
3252 { &hf_snmp_engineid_text, {
3253 "Engine ID Data: Text", "snmp.engineid.text", FT_STRING, BASE_NONE,
3254 NULL, 0, NULL, HFILL }},
3255 { &hf_snmp_engineid_time, {
3256 "Engine ID Data: Creation Time", "snmp.engineid.time", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
3257 NULL, 0, NULL, HFILL }},
3258 { &hf_snmp_engineid_data, {
3259 "Engine ID Data", "snmp.engineid.data", FT_BYTES, BASE_NONE,
3260 NULL, 0, NULL, HFILL }},
3261 { &hf_snmp_msgAuthentication, {
3262 "Authentication", "snmp.v3.auth", FT_BOOLEAN, BASE_NONE,
3263 TFS(&auth_flags), 0, NULL, HFILL }},
3264 { &hf_snmp_decryptedPDU, {
3265 "Decrypted ScopedPDU", "snmp.decrypted_pdu", FT_BYTES, BASE_NONE,
3266 NULL, 0, "Decrypted PDU", HFILL }},
3267 { &hf_snmp_noSuchObject, { "noSuchObject", "snmp.noSuchObject", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
3268 { &hf_snmp_noSuchInstance, { "noSuchInstance", "snmp.noSuchInstance", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
3269 { &hf_snmp_endOfMibView, { "endOfMibView", "snmp.endOfMibView", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
3270 { &hf_snmp_unSpecified, { "unSpecified", "snmp.unSpecified", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
3272 { &hf_snmp_integer32_value, { "Value (Integer32)", "snmp.value.int", FT_INT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3273 { &hf_snmp_octetstring_value, { "Value (OctetString)", "snmp.value.octets", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
3274 { &hf_snmp_oid_value, { "Value (OID)", "snmp.value.oid", FT_OID, BASE_NONE, NULL, 0, NULL, HFILL }},
3275 { &hf_snmp_null_value, { "Value (Null)", "snmp.value.null", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
3276 { &hf_snmp_ipv4_value, { "Value (IpAddress)", "snmp.value.ipv4", FT_IPv4, BASE_NONE, NULL, 0, NULL, HFILL }},
3277 { &hf_snmp_ipv6_value, { "Value (IpAddress)", "snmp.value.ipv6", FT_IPv6, BASE_NONE, NULL, 0, NULL, HFILL }},
3278 { &hf_snmp_anyaddress_value, { "Value (IpAddress)", "snmp.value.addr", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
3279 { &hf_snmp_unsigned32_value, { "Value (Unsigned32)", "snmp.value.u32", FT_INT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3280 { &hf_snmp_gauge32_value, { "Value (Gauge32)", "snmp.value.g32", FT_INT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3281 { &hf_snmp_unknown_value, { "Value (Unknown)", "snmp.value.unk", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
3282 { &hf_snmp_counter_value, { "Value (Counter32)", "snmp.value.counter", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3283 { &hf_snmp_big_counter_value, { "Value (Counter64)", "snmp.value.counter", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3284 { &hf_snmp_nsap_value, { "Value (NSAP)", "snmp.value.nsap", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3285 { &hf_snmp_timeticks_value, { "Value (Timeticks)", "snmp.value.timeticks", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3286 { &hf_snmp_opaque_value, { "Value (Opaque)", "snmp.value.opaque", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
3287 { &hf_snmp_objectname, { "Object Name", "snmp.name", FT_OID, BASE_NONE, NULL, 0, NULL, HFILL }},
3288 { &hf_snmp_scalar_instance_index, { "Scalar Instance Index", "snmp.name.index", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
3292 /*--- Included file: packet-snmp-hfarr.c ---*/
3293 #line 1 "packet-snmp-hfarr.c"
3294 { &hf_snmp_SMUX_PDUs_PDU,
3295 { "SMUX-PDUs", "snmp.SMUX_PDUs",
3296 FT_UINT32, BASE_DEC, VALS(snmp_SMUX_PDUs_vals), 0,
3299 { "version", "snmp.version",
3300 FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
3302 { &hf_snmp_community,
3303 { "community", "snmp.community",
3304 FT_STRING, BASE_NONE, NULL, 0,
3307 { "data", "snmp.data",
3308 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3310 { &hf_snmp_parameters,
3311 { "parameters", "snmp.parameters",
3312 FT_BYTES, BASE_NONE, NULL, 0,
3313 "OCTET_STRING", HFILL }},
3315 { "datav2u", "snmp.datav2u",
3316 FT_UINT32, BASE_DEC, VALS(snmp_T_datav2u_vals), 0,
3318 { &hf_snmp_v2u_plaintext,
3319 { "plaintext", "snmp.plaintext",
3320 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3322 { &hf_snmp_encrypted,
3323 { "encrypted", "snmp.encrypted",
3324 FT_BYTES, BASE_NONE, NULL, 0,
3325 "OCTET_STRING", HFILL }},
3326 { &hf_snmp_msgAuthoritativeEngineID,
3327 { "msgAuthoritativeEngineID", "snmp.msgAuthoritativeEngineID",
3328 FT_BYTES, BASE_NONE, NULL, 0,
3330 { &hf_snmp_msgAuthoritativeEngineBoots,
3331 { "msgAuthoritativeEngineBoots", "snmp.msgAuthoritativeEngineBoots",
3332 FT_UINT32, BASE_DEC, NULL, 0,
3334 { &hf_snmp_msgAuthoritativeEngineTime,
3335 { "msgAuthoritativeEngineTime", "snmp.msgAuthoritativeEngineTime",
3336 FT_UINT32, BASE_DEC, NULL, 0,
3338 { &hf_snmp_msgUserName,
3339 { "msgUserName", "snmp.msgUserName",
3340 FT_STRING, BASE_NONE, NULL, 0,
3342 { &hf_snmp_msgAuthenticationParameters,
3343 { "msgAuthenticationParameters", "snmp.msgAuthenticationParameters",
3344 FT_BYTES, BASE_NONE, NULL, 0,
3346 { &hf_snmp_msgPrivacyParameters,
3347 { "msgPrivacyParameters", "snmp.msgPrivacyParameters",
3348 FT_BYTES, BASE_NONE, NULL, 0,
3350 { &hf_snmp_msgVersion,
3351 { "msgVersion", "snmp.msgVersion",
3352 FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
3353 "Version", HFILL }},
3354 { &hf_snmp_msgGlobalData,
3355 { "msgGlobalData", "snmp.msgGlobalData",
3356 FT_NONE, BASE_NONE, NULL, 0,
3357 "HeaderData", HFILL }},
3358 { &hf_snmp_msgSecurityParameters,
3359 { "msgSecurityParameters", "snmp.msgSecurityParameters",
3360 FT_BYTES, BASE_NONE, NULL, 0,
3363 { "msgData", "snmp.msgData",
3364 FT_UINT32, BASE_DEC, VALS(snmp_ScopedPduData_vals), 0,
3365 "ScopedPduData", HFILL }},
3367 { "msgID", "snmp.msgID",
3368 FT_UINT32, BASE_DEC, NULL, 0,
3369 "INTEGER_0_2147483647", HFILL }},
3370 { &hf_snmp_msgMaxSize,
3371 { "msgMaxSize", "snmp.msgMaxSize",
3372 FT_UINT32, BASE_DEC, NULL, 0,
3373 "INTEGER_484_2147483647", HFILL }},
3374 { &hf_snmp_msgFlags,
3375 { "msgFlags", "snmp.msgFlags",
3376 FT_BYTES, BASE_NONE, NULL, 0,
3378 { &hf_snmp_msgSecurityModel,
3379 { "msgSecurityModel", "snmp.msgSecurityModel",
3380 FT_UINT32, BASE_DEC, VALS(sec_models), 0,
3382 { &hf_snmp_plaintext,
3383 { "plaintext", "snmp.plaintext",
3384 FT_NONE, BASE_NONE, NULL, 0,
3385 "ScopedPDU", HFILL }},
3386 { &hf_snmp_encryptedPDU,
3387 { "encryptedPDU", "snmp.encryptedPDU",
3388 FT_BYTES, BASE_NONE, NULL, 0,
3390 { &hf_snmp_contextEngineID,
3391 { "contextEngineID", "snmp.contextEngineID",
3392 FT_BYTES, BASE_NONE, NULL, 0,
3393 "SnmpEngineID", HFILL }},
3394 { &hf_snmp_contextName,
3395 { "contextName", "snmp.contextName",
3396 FT_BYTES, BASE_NONE, NULL, 0,
3397 "OCTET_STRING", HFILL }},
3398 { &hf_snmp_get_request,
3399 { "get-request", "snmp.get_request",
3400 FT_NONE, BASE_NONE, NULL, 0,
3401 "GetRequest_PDU", HFILL }},
3402 { &hf_snmp_get_next_request,
3403 { "get-next-request", "snmp.get_next_request",
3404 FT_NONE, BASE_NONE, NULL, 0,
3405 "GetNextRequest_PDU", HFILL }},
3406 { &hf_snmp_get_response,
3407 { "get-response", "snmp.get_response",
3408 FT_NONE, BASE_NONE, NULL, 0,
3409 "GetResponse_PDU", HFILL }},
3410 { &hf_snmp_set_request,
3411 { "set-request", "snmp.set_request",
3412 FT_NONE, BASE_NONE, NULL, 0,
3413 "SetRequest_PDU", HFILL }},
3415 { "trap", "snmp.trap",
3416 FT_NONE, BASE_NONE, NULL, 0,
3417 "Trap_PDU", HFILL }},
3418 { &hf_snmp_getBulkRequest,
3419 { "getBulkRequest", "snmp.getBulkRequest",
3420 FT_NONE, BASE_NONE, NULL, 0,
3421 "GetBulkRequest_PDU", HFILL }},
3422 { &hf_snmp_informRequest,
3423 { "informRequest", "snmp.informRequest",
3424 FT_NONE, BASE_NONE, NULL, 0,
3425 "InformRequest_PDU", HFILL }},
3426 { &hf_snmp_sNMPv2_Trap,
3427 { "sNMPv2-Trap", "snmp.sNMPv2_Trap",
3428 FT_NONE, BASE_NONE, NULL, 0,
3429 "SNMPv2_Trap_PDU", HFILL }},
3431 { "report", "snmp.report",
3432 FT_NONE, BASE_NONE, NULL, 0,
3433 "Report_PDU", HFILL }},
3434 { &hf_snmp_request_id,
3435 { "request-id", "snmp.request_id",
3436 FT_INT32, BASE_DEC, NULL, 0,
3437 "INTEGER", HFILL }},
3438 { &hf_snmp_error_status,
3439 { "error-status", "snmp.error_status",
3440 FT_INT32, BASE_DEC, VALS(snmp_T_error_status_vals), 0,
3442 { &hf_snmp_error_index,
3443 { "error-index", "snmp.error_index",
3444 FT_INT32, BASE_DEC, NULL, 0,
3445 "INTEGER", HFILL }},
3446 { &hf_snmp_variable_bindings,
3447 { "variable-bindings", "snmp.variable_bindings",
3448 FT_UINT32, BASE_DEC, NULL, 0,
3449 "VarBindList", HFILL }},
3450 { &hf_snmp_bulkPDU_request_id,
3451 { "request-id", "snmp.request_id",
3452 FT_INT32, BASE_DEC, NULL, 0,
3453 "Integer32", HFILL }},
3454 { &hf_snmp_non_repeaters,
3455 { "non-repeaters", "snmp.non_repeaters",
3456 FT_UINT32, BASE_DEC, NULL, 0,
3457 "INTEGER_0_2147483647", HFILL }},
3458 { &hf_snmp_max_repetitions,
3459 { "max-repetitions", "snmp.max_repetitions",
3460 FT_UINT32, BASE_DEC, NULL, 0,
3461 "INTEGER_0_2147483647", HFILL }},
3462 { &hf_snmp_enterprise,
3463 { "enterprise", "snmp.enterprise",
3464 FT_OID, BASE_NONE, NULL, 0,
3465 "EnterpriseOID", HFILL }},
3466 { &hf_snmp_agent_addr,
3467 { "agent-addr", "snmp.agent_addr",
3468 FT_IPv4, BASE_NONE, NULL, 0,
3469 "NetworkAddress", HFILL }},
3470 { &hf_snmp_generic_trap,
3471 { "generic-trap", "snmp.generic_trap",
3472 FT_INT32, BASE_DEC, VALS(snmp_GenericTrap_vals), 0,
3473 "GenericTrap", HFILL }},
3474 { &hf_snmp_specific_trap,
3475 { "specific-trap", "snmp.specific_trap",
3476 FT_INT32, BASE_DEC, NULL, 0,
3477 "SpecificTrap", HFILL }},
3478 { &hf_snmp_time_stamp,
3479 { "time-stamp", "snmp.time_stamp",
3480 FT_UINT32, BASE_DEC, NULL, 0,
3481 "TimeTicks", HFILL }},
3483 { "name", "snmp.name",
3484 FT_OID, BASE_NONE, NULL, 0,
3485 "ObjectName", HFILL }},
3486 { &hf_snmp_valueType,
3487 { "valueType", "snmp.valueType",
3488 FT_NONE, BASE_NONE, NULL, 0,
3490 { &hf_snmp_VarBindList_item,
3491 { "VarBind", "snmp.VarBind",
3492 FT_NONE, BASE_NONE, NULL, 0,
3495 { "open", "snmp.open",
3496 FT_UINT32, BASE_DEC, VALS(snmp_OpenPDU_vals), 0,
3497 "OpenPDU", HFILL }},
3499 { "close", "snmp.close",
3500 FT_INT32, BASE_DEC, VALS(snmp_ClosePDU_U_vals), 0,
3501 "ClosePDU", HFILL }},
3502 { &hf_snmp_registerRequest,
3503 { "registerRequest", "snmp.registerRequest",
3504 FT_NONE, BASE_NONE, NULL, 0,
3505 "RReqPDU", HFILL }},
3506 { &hf_snmp_registerResponse,
3507 { "registerResponse", "snmp.registerResponse",
3508 FT_UINT32, BASE_DEC, VALS(snmp_RegisterResponse_vals), 0,
3510 { &hf_snmp_commitOrRollback,
3511 { "commitOrRollback", "snmp.commitOrRollback",
3512 FT_INT32, BASE_DEC, VALS(snmp_SOutPDU_U_vals), 0,
3513 "SOutPDU", HFILL }},
3515 { "rRspPDU", "snmp.rRspPDU",
3516 FT_INT32, BASE_DEC, VALS(snmp_RRspPDU_U_vals), 0,
3519 { "pDUs", "snmp.pDUs",
3520 FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
3522 { &hf_snmp_smux_simple,
3523 { "smux-simple", "snmp.smux_simple",
3524 FT_NONE, BASE_NONE, NULL, 0,
3525 "SimpleOpen", HFILL }},
3526 { &hf_snmp_smux_version,
3527 { "smux-version", "snmp.smux_version",
3528 FT_INT32, BASE_DEC, VALS(snmp_T_smux_version_vals), 0,
3530 { &hf_snmp_identity,
3531 { "identity", "snmp.identity",
3532 FT_OID, BASE_NONE, NULL, 0,
3533 "OBJECT_IDENTIFIER", HFILL }},
3534 { &hf_snmp_description,
3535 { "description", "snmp.description",
3536 FT_BYTES, BASE_NONE, NULL, 0,
3537 "DisplayString", HFILL }},
3538 { &hf_snmp_password,
3539 { "password", "snmp.password",
3540 FT_BYTES, BASE_NONE, NULL, 0,
3541 "OCTET_STRING", HFILL }},
3543 { "subtree", "snmp.subtree",
3544 FT_OID, BASE_NONE, NULL, 0,
3545 "ObjectName", HFILL }},
3546 { &hf_snmp_priority,
3547 { "priority", "snmp.priority",
3548 FT_INT32, BASE_DEC, NULL, 0,
3549 "INTEGER_M1_2147483647", HFILL }},
3550 { &hf_snmp_operation,
3551 { "operation", "snmp.operation",
3552 FT_INT32, BASE_DEC, VALS(snmp_T_operation_vals), 0,
3555 /*--- End of included file: packet-snmp-hfarr.c ---*/
3556 #line 2068 "packet-snmp-template.c"
3559 /* List of subtrees */
3560 static gint *ett[] = {
3566 &ett_authParameters,
3571 &ett_decoding_error,
3573 /*--- Included file: packet-snmp-ettarr.c ---*/
3574 #line 1 "packet-snmp-ettarr.c"
3576 &ett_snmp_Messagev2u,
3577 &ett_snmp_T_datav2u,
3578 &ett_snmp_UsmSecurityParameters,
3579 &ett_snmp_SNMPv3Message,
3580 &ett_snmp_HeaderData,
3581 &ett_snmp_ScopedPduData,
3582 &ett_snmp_ScopedPDU,
3586 &ett_snmp_Trap_PDU_U,
3588 &ett_snmp_VarBindList,
3589 &ett_snmp_SMUX_PDUs,
3590 &ett_snmp_RegisterResponse,
3592 &ett_snmp_SimpleOpen_U,
3593 &ett_snmp_RReqPDU_U,
3595 /*--- End of included file: packet-snmp-ettarr.c ---*/
3596 #line 2084 "packet-snmp-template.c"
3598 module_t *snmp_module;
3600 static uat_field_t users_fields[] = {
3601 UAT_FLD_BUFFER(snmp_users,engine_id,"Engine ID","Engine-id for this entry (empty = any)"),
3602 UAT_FLD_LSTRING(snmp_users,userName,"Username","The username"),
3603 UAT_FLD_VS(snmp_users,auth_model,"Authentication model",auth_types,"Algorithm to be used for authentication."),
3604 UAT_FLD_LSTRING(snmp_users,authPassword,"Password","The password used for authenticating packets for this entry"),
3605 UAT_FLD_VS(snmp_users,priv_proto,"Privacy protocol",priv_types,"Algorithm to be used for privacy."),
3606 UAT_FLD_LSTRING(snmp_users,privPassword,"Privacy password","The password used for encrypting packets for this entry"),
3610 uat_t *assocs_uat = uat_new("SNMP Users",
3611 sizeof(snmp_ue_assoc_t),
3617 "ChSNMPUsersSection",
3619 snmp_users_update_cb,
3624 static uat_field_t specific_traps_flds[] = {
3625 UAT_FLD_CSTRING(specific_traps,enterprise,"Enterprise OID","Enterprise Object Identifier"),
3626 UAT_FLD_DEC(specific_traps,trap,"Trap Id","The specific-trap value"),
3627 UAT_FLD_CSTRING(specific_traps,desc,"Description","Trap type description"),
3631 uat_t* specific_traps_uat = uat_new("SNMP Enterprise Specific Trap Types",
3632 sizeof(snmp_st_assoc_t),
3633 "snmp_specific_traps",
3635 (void*) &specific_traps,
3636 &num_specific_traps,
3638 "ChSNMPEnterpriseSpecificTrapTypes",
3639 snmp_specific_trap_copy_cb,
3641 snmp_specific_trap_free_cb,
3643 specific_traps_flds);
3645 /* Register protocol */
3646 proto_snmp = proto_register_protocol(PNAME, PSNAME, PFNAME);
3647 new_register_dissector("snmp", dissect_snmp, proto_snmp);
3649 /* Register fields and subtrees */
3650 proto_register_field_array(proto_snmp, hf, array_length(hf));
3651 proto_register_subtree_array(ett, array_length(ett));
3654 /* Register configuration preferences */
3655 snmp_module = prefs_register_protocol(proto_snmp, process_prefs);
3656 prefs_register_bool_preference(snmp_module, "display_oid",
3657 "Show SNMP OID in info column",
3658 "Whether the SNMP OID should be shown in the info column",
3661 prefs_register_obsolete_preference(snmp_module, "mib_modules");
3662 prefs_register_obsolete_preference(snmp_module, "users_file");
3664 prefs_register_bool_preference(snmp_module, "desegment",
3665 "Reassemble SNMP-over-TCP messages\nspanning multiple TCP segments",
3666 "Whether the SNMP dissector should reassemble messages spanning multiple TCP segments."
3667 " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
3670 prefs_register_bool_preference(snmp_module, "var_in_tree",
3671 "Display dissected variables inside SNMP tree",
3672 "ON - display dissected variables inside SNMP tree, OFF - display dissected variables in root tree after SNMP",
3675 prefs_register_uat_preference(snmp_module, "users_table",
3677 "Table of engine-user associations used for authentication and decryption",
3680 prefs_register_uat_preference(snmp_module, "specific_traps_table",
3681 "Enterprise Specific Trap Types",
3682 "Table of enterprise specific-trap type descriptions",
3683 specific_traps_uat);
3686 prefs_register_static_text_preference(snmp_module, "info_mibs",
3687 "MIB settings can be changed in the Name Resolution preferences",
3688 "MIB settings can be changed in the Name Resolution preferences");
3691 value_sub_dissectors_table = register_dissector_table("snmp.variable_oid","SNMP Variable OID", FT_STRING, BASE_NONE);
3693 register_init_routine(renew_ue_cache);
3695 register_ber_syntax_dissector("SNMP", proto_snmp, dissect_snmp_tcp);
3699 /*--- proto_reg_handoff_snmp ---------------------------------------*/
3700 void proto_reg_handoff_snmp(void) {
3701 dissector_handle_t snmp_tcp_handle;
3703 snmp_handle = find_dissector("snmp");
3705 dissector_add("udp.port", UDP_PORT_SNMP, snmp_handle);
3706 dissector_add("udp.port", UDP_PORT_SNMP_TRAP, snmp_handle);
3707 dissector_add("udp.port", UDP_PORT_SNMP_PATROL, snmp_handle);
3708 dissector_add("ethertype", ETHERTYPE_SNMP, snmp_handle);
3709 dissector_add("ipx.socket", IPX_SOCKET_SNMP_AGENT, snmp_handle);
3710 dissector_add("ipx.socket", IPX_SOCKET_SNMP_SINK, snmp_handle);
3711 dissector_add("hpext.dxsap", HPEXT_SNMP, snmp_handle);
3713 snmp_tcp_handle = create_dissector_handle(dissect_snmp_tcp, proto_snmp);
3714 dissector_add("tcp.port", TCP_PORT_SNMP, snmp_tcp_handle);
3715 dissector_add("tcp.port", TCP_PORT_SNMP_TRAP, snmp_tcp_handle);
3717 data_handle = find_dissector("data");
3720 * Process preference settings.
3722 * We can't do this in the register routine, as preferences aren't
3723 * read until all dissector register routines have been called (so
3724 * that all dissector preferences have been registered).
3731 proto_register_smux(void)
3733 static hf_register_info hf[] = {
3735 { "Version", "smux.version", FT_UINT8, BASE_DEC, NULL,
3736 0x0, NULL, HFILL }},
3738 { "PDU type", "smux.pdutype", FT_UINT8, BASE_DEC, VALS(smux_types),
3739 0x0, NULL, HFILL }},
3741 static gint *ett[] = {
3745 proto_smux = proto_register_protocol("SNMP Multiplex Protocol",
3747 proto_register_field_array(proto_smux, hf, array_length(hf));
3748 proto_register_subtree_array(ett, array_length(ett));
3753 proto_reg_handoff_smux(void)
3755 dissector_handle_t smux_handle;
3757 smux_handle = create_dissector_handle(dissect_smux, proto_smux);
3758 dissector_add("tcp.port", TCP_PORT_SMUX, smux_handle);