### Bug Summary

File: | builds/wireshark/wireshark/epan/dissectors/packet-snmp.c
Warning: | line 3548, column 11 Assigned value is uninitialized

### Annotated Source Code

Press '?' to see keyboard shortcuts

Show analyzer invocation
clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name packet-snmp.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -ffloat16-excess-precision=fast -fbfloat16-excess-precision=fast -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/builds/wireshark/wireshark/build -fcoverage-compilation-dir=/builds/wireshark/wireshark/build -resource-dir /usr/lib/llvm-21/lib/clang/21 -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include -isystem /builds/wireshark/wireshark/epan/dissectors -isystem /builds/wireshark/wireshark/build/epan/dissectors -isystem /usr/include/mit-krb5 -isystem /usr/include/libxml2 -isystem /builds/wireshark/wireshark/epan -D G_DISABLE_DEPRECATED -D G_DISABLE_SINGLE_INCLUDES -D WS_BUILD_DLL -D WS_DEBUG -D WS_DEBUG_UTF_8 -I /builds/wireshark/wireshark/build -I /builds/wireshark/wireshark -I /builds/wireshark/wireshark/include -D _GLIBCXX_ASSERTIONS -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/builds/wireshark/wireshark/= -fmacro-prefix-map=/builds/wireshark/wireshark/build/= -fmacro-prefix-map=../= -Wno-format-nonliteral -std=gnu11 -ferror-limit 19 -fvisibility=hidden -fwrapv -fwrapv-pointer -fstrict-flex-arrays=3 -stack-protector 2 -fstack-clash-protection -fcf-protection=full -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fexceptions -fcolor-diagnostics -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /builds/wireshark/wireshark/sbout/2026-01-25-100340-3605-1 -x c /builds/wireshark/wireshark/epan/dissectors/packet-snmp.c

Keyboard shortcuts:

- Use 'j/k' keys for keyboard navigation
- Use 'Shift+S' to show/hide relevant lines
- Use '?' to toggle this window

Close
Show only relevant lines Show control flow arrows

1 | /* Do not modify this file. Changes will be overwritten. */
2 | /* Generated automatically by the ASN.1 to Wireshark dissector compiler */
3 | /* packet-snmp.c */
4 | /* asn2wrs.py -b -q -L -p snmp -c ./snmp.cnf -s ./packet-snmp-template -D . -O ../.. snmp.asn */
5 |
6 | /* packet-snmp.c
7 | * Routines for SNMP (simple network management protocol)
8 | * Copyright (C) 1998 Didier Jorand
9 | *
10 | * See RFC 1157 for SNMPv1.
11 | *
12 | * See RFCs 1901, 1905, and 1906 for SNMPv2c.
13 | *
14 | * See RFCs 1905, 1906, 1909, and 1910 for SNMPv2u [historic].
15 | *
16 | * See RFCs 2570-2576 for SNMPv3
17 | * Updated to use the asn2wrs compiler made by Tomas Kukosa
18 | * Copyright (C) 2005 - 2006 Anders Broman [AT] ericsson.com
19 | *
20 | * See RFC 3414 for User-based Security Model for SNMPv3
21 | * See RFC 3826 for (AES) Cipher Algorithm in the SNMP USM
22 | * See RFC 2578 for Structure of Management Information Version 2 (SMIv2)
23 | * Copyright (C) 2007 Luis E. Garcia Ontanon <luis@ontanon.org>
24 | *
25 | * Wireshark - Network traffic analyzer
26 | * By Gerald Combs <gerald@wireshark.org>
27 | * Copyright 1998 Gerald Combs
28 | *
29 | * Some stuff from:
30 | *
31 | * GXSNMP -- An snmp management application
32 | * Copyright (C) 1998 Gregory McLean & Jochen Friedrich
33 | * Beholder RMON ethernet network monitor,Copyright (C) 1993 DNPAP group
34 | *
35 | * SPDX-License-Identifier: GPL-2.0-or-later
36 | */
37 |
38 | #if 0
39 | #include <stdio.h>
40 | #define D(args) do {printf args; fflush(stdoutstdout); } while(0)
41 | #endif
42 |
43 | #include "config.h"
44 |
45 | #include <epan/packet.h>
46 | #include <epan/strutil.h>
47 | #include <epan/conversation.h>
48 | #include <epan/etypes.h>
49 | #include <epan/prefs.h>
50 | #include <epan/addr_resolv.h>
51 | #include <epan/next_tvb.h>
52 | #include <epan/uat.h>
53 | #include <epan/asn1.h>
54 | #include <epan/expert.h>
55 | #include <epan/oids.h>
56 | #include <epan/srt_table.h>
57 | #include <epan/tap.h>
58 | #include <epan/tfs.h>
59 | #include <wsutil/array.h>
60 | #include "packet-ipx.h"
61 | #include "packet-hpext.h"
62 | #include "packet-ber.h"
63 | #include "packet-snmp.h"
64 | #include <wsutil/wsgcrypt.h>
65 |
66 | #define PNAME"Simple Network Management Protocol" "Simple Network Management Protocol"
67 | #define PSNAME"SNMP" "SNMP"
68 | #define PFNAME"snmp" "snmp"
69 |
70 | #define UDP_PORT_SNMP161 161
71 | #define UDP_PORT_SNMP_TRAP162 162
72 | #define TCP_PORT_SNMP161 161
73 | #define TCP_PORT_SNMP_TRAP162 162
74 | #define TCP_PORT_SMUX199 199
75 | #define UDP_PORT_SNMP_PATROL8161 8161
76 | #define SNMP_NUM_PROCEDURES8 8
77 |
78 | /* Initialize the protocol and registered fields */
79 | static int snmp_tap;
80 | static int proto_snmp;
81 | static int proto_smux;
82 |
83 | static bool_Bool display_oid = true1;
84 | static bool_Bool snmp_var_in_tree = true1;
85 |
86 | void proto_register_snmp(void);
87 | void proto_reg_handoff_snmp(void);
88 | void proto_register_smux(void);
89 | void proto_reg_handoff_smux(void);
90 |
91 | static void snmp_usm_password_to_key(const snmp_usm_auth_model_t model, const uint8_t *password, unsigned passwordlen,
92 | const uint8_t *engineID, unsigned engineLength, uint8_t *key);
93 |
94 | static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t*, tvbuff_t*, packet_info *pinfo, char const**);
95 | static tvbuff_t* snmp_usm_priv_aes128(snmp_usm_params_t*, tvbuff_t*, packet_info *pinfo, char const**);
96 | static tvbuff_t* snmp_usm_priv_aes192(snmp_usm_params_t*, tvbuff_t*, packet_info *pinfo, char const**);
97 | static tvbuff_t* snmp_usm_priv_aes256(snmp_usm_params_t*, tvbuff_t*, packet_info *pinfo, char const**);
98 |
99 | static bool_Bool snmp_usm_auth(const packet_info *pinfo, const snmp_usm_auth_model_t model, snmp_usm_params_t* p, uint8_t**, unsigned*, char const**);
100 |
101 | static const value_string auth_types[] = {
102 | {SNMP_USM_AUTH_MD5,"MD5"},
103 | {SNMP_USM_AUTH_SHA1,"SHA1"},
104 | {SNMP_USM_AUTH_SHA2_224,"SHA2-224"},
105 | {SNMP_USM_AUTH_SHA2_256,"SHA2-256"},
106 | {SNMP_USM_AUTH_SHA2_384,"SHA2-384"},
107 | {SNMP_USM_AUTH_SHA2_512,"SHA2-512"},
108 | {0,NULL((void*)0)}
109 | };
110 |
111 | static const unsigned auth_hash_len[] = {
112 | HASH_MD5_LENGTH16,
113 | HASH_SHA1_LENGTH20,
114 | HASH_SHA2_224_LENGTH28,
115 | HASH_SHA2_256_LENGTH32,
116 | HASH_SHA2_384_LENGTH48,
117 | HASH_SHA2_512_LENGTH64
118 | };
119 |
120 | static const unsigned auth_tag_len[] = {
121 | 12,
122 | 12,
123 | 16,
124 | 24,
125 | 32,
126 | 48
127 | };
128 |
129 | static const enum gcry_md_algos auth_hash_algo[] = {
130 | GCRY_MD_MD5,
131 | GCRY_MD_SHA1,
132 | GCRY_MD_SHA224,
133 | GCRY_MD_SHA256,
134 | GCRY_MD_SHA384,
135 | GCRY_MD_SHA512
136 | };
137 |
138 | #define PRIV_DES0 0
139 | #define PRIV_AES1281 1
140 | #define PRIV_AES1922 2
141 | #define PRIV_AES2563 3
142 |
143 | static const value_string priv_types[] = {
144 | { PRIV_DES0, "DES" },
145 | { PRIV_AES1281, "AES" },
146 | { PRIV_AES1922, "AES192" },
147 | { PRIV_AES2563, "AES256" },
148 | { 0, NULL((void*)0)}
149 | };
150 | static snmp_usm_decoder_t priv_protos[] = {
151 | snmp_usm_priv_des,
152 | snmp_usm_priv_aes128,
153 | snmp_usm_priv_aes192,
154 | snmp_usm_priv_aes256
155 | };
156 |
157 | #define PRIVKEYEXP_USM_3DESDESEDE_000 0
158 | #define PRIVKEYEXP_AGENTPP1 1
159 |
160 | static const value_string priv_key_exp_types[] = {
161 | { PRIVKEYEXP_USM_3DESDESEDE_000, "draft-reeder-snmpv3-usm-3desede-00" },
162 | { PRIVKEYEXP_AGENTPP1, "AGENT++" },
163 | { 0, NULL((void*)0) }
164 | };
165 |
166 | static snmp_ue_assoc_t* ueas;
167 | static unsigned num_ueas;
168 | static snmp_ue_assoc_t* localized_ues;
169 | static snmp_ue_assoc_t* unlocalized_ues;
170 | /****/
171 |
172 | /* Variables used for handling enterprise specific trap types */
173 | typedef struct _snmp_st_assoc_t {
174 | char *enterprise;
175 | unsigned trap;
176 | char *desc;
177 | } snmp_st_assoc_t;
178 | static unsigned num_specific_traps;
179 | static snmp_st_assoc_t *specific_traps;
180 | static const char *enterprise_oid;
181 | static unsigned generic_trap;
182 | static uint32_t snmp_version;
183 | static uint32_t RequestID = -1;
184 |
185 | static snmp_usm_params_t usm_p;
186 |
187 | #define TH_AUTH0x01 0x01
188 | #define TH_CRYPT0x02 0x02
189 | #define TH_REPORT0x04 0x04
190 |
191 | /* desegmentation of SNMP-over-TCP */
192 | static bool_Bool snmp_desegment = true1;
193 |
194 | /* Global variables */
195 |
196 | uint32_t MsgSecurityModel;
197 | tvbuff_t *oid_tvb=NULL((void*)0);
198 | tvbuff_t *value_tvb=NULL((void*)0);
199 |
200 | static dissector_handle_t snmp_handle;
201 | static dissector_handle_t snmp_tcp_handle;
202 | static dissector_handle_t data_handle;
203 | static dissector_handle_t smux_handle;
204 |
205 | static next_tvb_list_t *var_list;
206 |
207 | static int hf_snmp_response_in;
208 | static int hf_snmp_response_to;
209 | static int hf_snmp_time;
210 |
211 | static int hf_snmp_v3_flags_auth;
212 | static int hf_snmp_v3_flags_crypt;
213 | static int hf_snmp_v3_flags_report;
214 |
215 | static int hf_snmp_engineid_conform;
216 | static int hf_snmp_engineid_enterprise;
217 | static int hf_snmp_engineid_format;
218 | static int hf_snmp_engineid_ipv4;
219 | static int hf_snmp_engineid_ipv6;
220 | static int hf_snmp_engineid_cisco_type;
221 | static int hf_snmp_engineid_mac;
222 | static int hf_snmp_engineid_text;
223 | static int hf_snmp_engineid_time;
224 | static int hf_snmp_engineid_data;
225 | static int hf_snmp_decryptedPDU;
226 | static int hf_snmp_msgAuthentication;
227 |
228 | static int hf_snmp_noSuchObject;
229 | static int hf_snmp_noSuchInstance;
230 | static int hf_snmp_endOfMibView;
231 | static int hf_snmp_unSpecified;
232 |
233 | static int hf_snmp_integer32_value;
234 | static int hf_snmp_octetstring_value;
235 | static int hf_snmp_oid_value;
236 | static int hf_snmp_null_value;
237 | static int hf_snmp_ipv4_value;
238 | static int hf_snmp_ipv6_value;
239 | static int hf_snmp_anyaddress_value;
240 | static int hf_snmp_unsigned32_value;
241 | static int hf_snmp_unknown_value;
242 | static int hf_snmp_opaque_value;
243 | static int hf_snmp_nsap_value;
244 | static int hf_snmp_counter_value;
245 | static int hf_snmp_timeticks_value;
246 | static int hf_snmp_big_counter_value;
247 | static int hf_snmp_gauge32_value;
248 |
249 | static int hf_snmp_objectname;
250 | static int hf_snmp_scalar_instance_index;
251 |
252 | static int hf_snmp_var_bind_str;
253 | static int hf_snmp_agentid_trailer;
254 |
255 | static int hf_snmp_SMUX_PDUs_PDU; /* SMUX_PDUs */
256 | static int hf_snmp_version; /* Version */
257 | static int hf_snmp_community; /* Community */
258 | static int hf_snmp_data; /* PDUs */
259 | static int hf_snmp_parameters; /* OCTET_STRING */
260 | static int hf_snmp_datav2u; /* T_datav2u */
261 | static int hf_snmp_v2u_plaintext; /* PDUs */
262 | static int hf_snmp_encrypted; /* OCTET_STRING */
263 | static int hf_snmp_msgAuthoritativeEngineID; /* T_msgAuthoritativeEngineID */
264 | static int hf_snmp_msgAuthoritativeEngineBoots; /* T_msgAuthoritativeEngineBoots */
265 | static int hf_snmp_msgAuthoritativeEngineTime; /* T_msgAuthoritativeEngineTime */
266 | static int hf_snmp_msgUserName; /* T_msgUserName */
267 | static int hf_snmp_msgAuthenticationParameters; /* T_msgAuthenticationParameters */
268 | static int hf_snmp_msgPrivacyParameters; /* T_msgPrivacyParameters */
269 | static int hf_snmp_msgVersion; /* Version */
270 | static int hf_snmp_msgGlobalData; /* HeaderData */
271 | static int hf_snmp_msgSecurityParameters; /* T_msgSecurityParameters */
272 | static int hf_snmp_msgData; /* ScopedPduData */
273 | static int hf_snmp_msgID; /* INTEGER_0_2147483647 */
274 | static int hf_snmp_msgMaxSize; /* INTEGER_484_2147483647 */
275 | static int hf_snmp_msgFlags; /* T_msgFlags */
276 | static int hf_snmp_msgSecurityModel; /* T_msgSecurityModel */
277 | static int hf_snmp_plaintext; /* ScopedPDU */
278 | static int hf_snmp_encryptedPDU; /* T_encryptedPDU */
279 | static int hf_snmp_contextEngineID; /* SnmpEngineID */
280 | static int hf_snmp_contextName; /* OCTET_STRING */
281 | static int hf_snmp_get_request; /* GetRequest_PDU */
282 | static int hf_snmp_get_next_request; /* GetNextRequest_PDU */
283 | static int hf_snmp_get_response; /* GetResponse_PDU */
284 | static int hf_snmp_set_request; /* SetRequest_PDU */
285 | static int hf_snmp_trap; /* Trap_PDU */
286 | static int hf_snmp_getBulkRequest; /* GetBulkRequest_PDU */
287 | static int hf_snmp_informRequest; /* InformRequest_PDU */
288 | static int hf_snmp_snmpV2_trap; /* SNMPv2_Trap_PDU */
289 | static int hf_snmp_report; /* Report_PDU */
290 | static int hf_snmp_request_id; /* T_request_id */
291 | static int hf_snmp_error_status; /* T_error_status */
292 | static int hf_snmp_error_index; /* INTEGER */
293 | static int hf_snmp_variable_bindings; /* VarBindList */
294 | static int hf_snmp_request_id_01; /* Integer32 */
295 | static int hf_snmp_non_repeaters; /* INTEGER_0_2147483647 */
296 | static int hf_snmp_max_repetitions; /* INTEGER_0_2147483647 */
297 | static int hf_snmp_enterprise; /* EnterpriseOID */
298 | static int hf_snmp_agent_addr; /* NetworkAddress */
299 | static int hf_snmp_generic_trap; /* GenericTrap */
300 | static int hf_snmp_specific_trap; /* SpecificTrap */
301 | static int hf_snmp_time_stamp; /* TimeTicks */
302 | static int hf_snmp_name; /* ObjectName */
303 | static int hf_snmp_valueType; /* ValueType */
304 | static int hf_snmp_VarBindList_item; /* VarBind */
305 | static int hf_snmp_open; /* OpenPDU */
306 | static int hf_snmp_close; /* ClosePDU */
307 | static int hf_snmp_registerRequest; /* RReqPDU */
308 | static int hf_snmp_registerResponse; /* RegisterResponse */
309 | static int hf_snmp_commitOrRollback; /* SOutPDU */
310 | static int hf_snmp_rRspPDU; /* RRspPDU */
311 | static int hf_snmp_pDUs; /* PDUs */
312 | static int hf_snmp_smux_simple; /* SimpleOpen */
313 | static int hf_snmp_smux_version; /* T_smux_version */
314 | static int hf_snmp_identity; /* OBJECT_IDENTIFIER */
315 | static int hf_snmp_description; /* DisplayString */
316 | static int hf_snmp_password; /* OCTET_STRING */
317 | static int hf_snmp_subtree; /* ObjectName */
318 | static int hf_snmp_priority; /* INTEGER_M1_2147483647 */
319 | static int hf_snmp_operation; /* T_operation */
320 |
321 | /* Initialize the subtree pointers */
322 | static int ett_smux;
323 | static int ett_snmp;
324 | static int ett_engineid;
325 | static int ett_msgFlags;
326 | static int ett_encryptedPDU;
327 | static int ett_decrypted;
328 | static int ett_authParameters;
329 | static int ett_internet;
330 | static int ett_varbind;
331 | static int ett_name;
332 | static int ett_value;
333 | static int ett_decoding_error;
334 |
335 | static int ett_snmp_Message;
336 | static int ett_snmp_Messagev2u;
337 | static int ett_snmp_T_datav2u;
338 | static int ett_snmp_UsmSecurityParameters;
339 | static int ett_snmp_SNMPv3Message;
340 | static int ett_snmp_HeaderData;
341 | static int ett_snmp_ScopedPduData;
342 | static int ett_snmp_ScopedPDU;
343 | static int ett_snmp_PDUs;
344 | static int ett_snmp_PDU;
345 | static int ett_snmp_BulkPDU;
346 | static int ett_snmp_Trap_PDU_U;
347 | static int ett_snmp_VarBind;
348 | static int ett_snmp_VarBindList;
349 | static int ett_snmp_SMUX_PDUs;
350 | static int ett_snmp_RegisterResponse;
351 | static int ett_snmp_OpenPDU;
352 | static int ett_snmp_SimpleOpen_U;
353 | static int ett_snmp_RReqPDU_U;
354 |
355 | static expert_field ei_snmp_failed_decrypted_data_pdu;
356 | static expert_field ei_snmp_decrypted_data_bad_formatted;
357 | static expert_field ei_snmp_verify_authentication_error;
358 | static expert_field ei_snmp_authentication_ok;
359 | static expert_field ei_snmp_authentication_error;
360 | static expert_field ei_snmp_varbind_not_uni_class_seq;
361 | static expert_field ei_snmp_varbind_has_indicator;
362 | static expert_field ei_snmp_objectname_not_oid;
363 | static expert_field ei_snmp_objectname_has_indicator;
364 | static expert_field ei_snmp_value_not_primitive_encoding;
365 | static expert_field ei_snmp_invalid_oid;
366 | static expert_field ei_snmp_varbind_wrong_tag;
367 | static expert_field ei_snmp_varbind_response;
368 | static expert_field ei_snmp_no_instance_subid;
369 | static expert_field ei_snmp_wrong_num_of_subids;
370 | static expert_field ei_snmp_index_suboid_too_short;
371 | static expert_field ei_snmp_unimplemented_instance_index;
372 | static expert_field ei_snmp_index_suboid_len0;
373 | static expert_field ei_snmp_index_suboid_too_long;
374 | static expert_field ei_snmp_index_string_too_long;
375 | static expert_field ei_snmp_column_parent_not_row;
376 | static expert_field ei_snmp_uint_too_large;
377 | static expert_field ei_snmp_int_too_large;
378 | static expert_field ei_snmp_integral_value0;
379 | static expert_field ei_snmp_missing_mib;
380 | static expert_field ei_snmp_varbind_wrong_length_value;
381 | static expert_field ei_snmp_varbind_wrong_class_tag;
382 | static expert_field ei_snmp_rfc1910_non_conformant;
383 | static expert_field ei_snmp_rfc3411_non_conformant;
384 | static expert_field ei_snmp_version_unknown;
385 | static expert_field ei_snmp_trap_pdu_obsolete;
386 |
387 | static const true_false_string auth_flags = {
388 | "OK",
389 | "Failed"
390 | };
391 |
392 | /* Security Models */
393 |
394 | #define SNMP_SEC_ANY0 0
395 | #define SNMP_SEC_V11 1
396 | #define SNMP_SEC_V2C2 2
397 | #define SNMP_SEC_USM3 3
398 |
399 | static const value_string sec_models[] = {
400 | { SNMP_SEC_ANY0, "Any" },
401 | { SNMP_SEC_V11, "V1" },
402 | { SNMP_SEC_V2C2, "V2C" },
403 | { SNMP_SEC_USM3, "USM" },
404 | { 0, NULL((void*)0) }
405 | };
406 |
407 | #if 0
408 | /* SMUX PDU types */
409 | #define SMUX_MSG_OPEN 0
410 | #define SMUX_MSG_CLOSE 1
411 | #define SMUX_MSG_RREQ 2
412 | #define SMUX_MSG_RRSP 3
413 | #define SMUX_MSG_SOUT 4
414 |
415 | static const value_string smux_types[] = {
416 | { SMUX_MSG_OPEN, "Open" },
417 | { SMUX_MSG_CLOSE, "Close" },
418 | { SMUX_MSG_RREQ, "Registration Request" },
419 | { SMUX_MSG_RRSP, "Registration Response" },
420 | { SMUX_MSG_SOUT, "Commit Or Rollback" },
421 | { 0, NULL((void*)0) }
422 | };
423 | #endif
424 |
425 | /* Procedure names (used in Service Response Time) */
426 | static const value_string snmp_procedure_names[] = {
427 | { 0, "Get" },
428 | { 1, "GetNext" },
429 | { 3, "Set" },
430 | { 4, "Register" },
431 | { 5, "Bulk" },
432 | { 6, "Inform" },
433 | { 0, NULL((void*)0) }
434 | };
435 |
436 | #define SNMP_IPA0 0 /* IP Address */
437 | #define SNMP_CNT1 1 /* Counter (Counter32) */
438 | #define SNMP_GGE2 2 /* Gauge (Gauge32) */
439 | #define SNMP_TIT3 3 /* TimeTicks */
440 | #define SNMP_OPQ4 4 /* Opaque */
441 | #define SNMP_NSP5 5 /* NsapAddress */
442 | #define SNMP_C646 6 /* Counter64 */
443 | #define SNMP_U327 7 /* Uinteger32 */
444 |
445 | #define SERR_NSO0 0
446 | #define SERR_NSI1 1
447 | #define SERR_EOM2 2
448 |
449 |
450 | dissector_table_t value_sub_dissectors_table;
451 |
452 | /*
453 | * Data structure attached to a conversation, request/response information
454 | */
455 | typedef struct snmp_conv_info_t {
456 | wmem_map_t *request_response;
457 | } snmp_conv_info_t;
458 |
459 | static snmp_conv_info_t*
460 | snmp_find_conversation_and_get_conv_data(packet_info *pinfo);
461 |
462 | static snmp_request_response_t *
463 | snmp_get_request_response_pointer(wmem_map_t *map, uint32_t requestId)
464 | {
465 | snmp_request_response_t *srrp=(snmp_request_response_t *)wmem_map_lookup(map, &requestId);
466 | if (!srrp) {
467 | srrp=wmem_new0(wmem_file_scope(), snmp_request_response_t)((snmp_request_response_t*)wmem_alloc0((wmem_file_scope()), sizeof (snmp_request_response_t)));
468 | srrp->requestId=requestId;
469 | wmem_map_insert(map, &(srrp->requestId), (void *)srrp);
470 | }
471 |
472 | return srrp;
473 | }
474 |
475 | static snmp_request_response_t*
476 | snmp_match_request_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, unsigned requestId, unsigned procedure_id, snmp_conv_info_t *snmp_info)
477 | {
478 | snmp_request_response_t *srrp=NULL((void*)0);
479 |
480 | DISSECTOR_ASSERT_HINT(snmp_info, "No SNMP info from ASN1 context")((void) ((snmp_info) ? (void)0 : (proto_report_dissector_bug( "%s:%u: failed assertion \"%s\" (%s)", "epan/dissectors/packet-snmp.c" , 480, "snmp_info", "No SNMP info from ASN1 context"))));
481 |
482 | /* get or create request/response pointer based on request id */
483 | srrp=(snmp_request_response_t *)snmp_get_request_response_pointer(snmp_info->request_response, requestId);
484 |
485 | // if not visited fill the request/response data
486 | if (!PINFO_FD_VISITED(pinfo)((pinfo)->fd->visited)) {
487 | switch(procedure_id)
488 | {
489 | case SNMP_REQ_GET0:
490 | case SNMP_REQ_GETNEXT1:
491 | case SNMP_REQ_SET3:
492 | case SNMP_REQ_GETBULK5:
493 | case SNMP_REQ_INFORM6:
494 | srrp->request_frame_id=pinfo->fd->num;
495 | srrp->response_frame_id=0;
496 | srrp->request_time=pinfo->abs_ts;
497 | srrp->request_procedure_id=procedure_id;
498 | break;
499 | case SNMP_RES_GET2:
500 | srrp->response_frame_id=pinfo->fd->num;
501 | break;
502 | default:
503 | return NULL((void*)0);
504 | }
505 | }
506 |
507 | /* if request and response was matched */
508 | if (srrp->request_frame_id!=0 && srrp->response_frame_id!=0)
509 | {
510 | proto_item *it;
511 |
512 | // if it is the response
513 | if (srrp->response_frame_id == pinfo->fd->num)
514 | {
515 | nstime_t ns;
516 | it=proto_tree_add_uint(tree, hf_snmp_response_to, tvb, 0, 0, srrp->request_frame_id);
517 | proto_item_set_generated(it);
518 | nstime_delta(&ns, &pinfo->abs_ts, &srrp->request_time);
519 | it=proto_tree_add_time(tree, hf_snmp_time, tvb, 0, 0, &ns);
520 | proto_item_set_generated(it);
521 |
522 | return srrp;
523 | } else {
524 | it=proto_tree_add_uint(tree, hf_snmp_response_in, tvb, 0, 0, srrp->response_frame_id);
525 | proto_item_set_generated(it);
526 | }
527 | }
528 |
529 | return NULL((void*)0);
530 | }
531 |
532 | static void
533 | snmpstat_init(struct register_srt* srt _U___attribute__((unused)), GArray* srt_array)
534 | {
535 | srt_stat_table *snmp_srt_table;
536 | uint32_t i;
537 |
538 | snmp_srt_table = init_srt_table("SNMP Commands", NULL((void*)0), srt_array, SNMP_NUM_PROCEDURES8, NULL((void*)0), "snmp.data", NULL((void*)0));
539 | for (i = 0; i < SNMP_NUM_PROCEDURES8; i++)
540 | {
541 | init_srt_table_row(snmp_srt_table, i, val_to_str_const(i, snmp_procedure_names, "<unknown>"));
542 | }
543 | }
544 |
545 | /* This is called only if request and response was matched -> no need to return anything than TAP_PACKET_REDRAW */
546 | static tap_packet_status
547 | snmpstat_packet(void *psnmp, packet_info *pinfo, epan_dissect_t *edt _U___attribute__((unused)), const void *psi, tap_flags_t flags _U___attribute__((unused)))
548 | {
549 | unsigned i = 0;
550 | srt_stat_table *snmp_srt_table;
551 | const snmp_request_response_t *snmp=(const snmp_request_response_t *)psi;
552 | srt_data_t *data = (srt_data_t *)psnmp;
553 |
554 | snmp_srt_table = g_array_index(data->srt_array, srt_stat_table*, i)(((srt_stat_table**) (void *) (data->srt_array)->data) [ (i)]);
555 |
556 | add_srt_table_data(snmp_srt_table, snmp->request_procedure_id, &snmp->request_time, pinfo);
557 | return TAP_PACKET_REDRAW;
558 | }
559 |
560 | static const char *
561 | snmp_lookup_specific_trap (unsigned specific_trap)
562 | {
563 | unsigned i;
564 |
565 | for (i = 0; i < num_specific_traps; i++) {
566 | snmp_st_assoc_t *u = &(specific_traps[i]);
567 |
568 | if ((u->trap == specific_trap) &&
569 | (strcmp (u->enterprise, enterprise_oid) == 0))
570 | {
571 | return u->desc;
572 | }
573 | }
574 |
575 | return NULL((void*)0);
576 | }
577 |
578 | static int
579 | dissect_snmp_variable_string(tvbuff_t *tvb, packet_info *pinfo _U___attribute__((unused)), proto_tree *tree, void *data _U___attribute__((unused)))
580 | {
581 |
582 | proto_tree_add_item(tree, hf_snmp_var_bind_str, tvb, 0, -1, ENC_ASCII0x00000000);
583 |
584 | return tvb_captured_length(tvb);
585 | }
586 |
587 | /*
588 | DateAndTime ::= TEXTUAL-CONVENTION
589 | DISPLAY-HINT "2d-1d-1d,1d:1d:1d.1d,1a1d:1d"
590 | STATUS current
591 | DESCRIPTION
592 | "A date-time specification.
593 |
594 | field octets contents range
595 | ----- ------ -------- -----
596 | 1 1-2 year* 0..65536
597 | 2 3 month 1..12
598 | 3 4 day 1..31
599 | 4 5 hour 0..23
600 | 5 6 minutes 0..59
601 | 6 7 seconds 0..60
602 | (use 60 for leap-second)
603 | 7 8 deci-seconds 0..9
604 | 8 9 direction from UTC '+' / '-'
605 | 9 10 hours from UTC* 0..13
606 | 10 11 minutes from UTC 0..59
607 |
608 | * Notes:
609 | - the value of year is in network-byte order
610 | - daylight saving time in New Zealand is +13
611 |
612 | For example, Tuesday May 26, 1992 at 1:30:15 PM EDT would be
613 | displayed as:
614 |
615 | 1992-5-26,13:30:15.0,-4:0
616 |
617 | Note that if only local time is known, then timezone
618 | information (fields 8-10) is not present."
619 | SYNTAX OCTET STRING (SIZE (8 | 11))
620 | */
621 | static proto_item *
622 | dissect_snmp_variable_date_and_time(proto_tree *tree, packet_info *pinfo, int hfid, tvbuff_t *tvb, int offset, int length)
623 | {
624 | uint16_t year;
625 | uint8_t month;
626 | uint8_t day;
627 | uint8_t hour;
628 | uint8_t minutes;
629 | uint8_t seconds;
630 | uint8_t deci_seconds;
631 | uint8_t hour_from_utc;
632 | uint8_t min_from_utc;
633 | char *str;
634 |
635 | year = tvb_get_ntohs(tvb,offset);
636 | month = tvb_get_uint8(tvb,offset+2);
637 | day = tvb_get_uint8(tvb,offset+3);
638 | hour = tvb_get_uint8(tvb,offset+4);
639 | minutes = tvb_get_uint8(tvb,offset+5);
640 | seconds = tvb_get_uint8(tvb,offset+6);
641 | deci_seconds = tvb_get_uint8(tvb,offset+7);
642 | if(length > 8){
643 | hour_from_utc = tvb_get_uint8(tvb,offset+9);
644 | min_from_utc = tvb_get_uint8(tvb,offset+10);
645 |
646 | str = wmem_strdup_printf(pinfo->pool,
647 | "%u-%u-%u, %u:%u:%u.%u UTC %s%u:%u",
648 | year,
649 | month,
650 | day,
651 | hour,
652 | minutes,
653 | seconds,
654 | deci_seconds,
655 | tvb_get_string_enc(pinfo->pool,tvb,offset+8,1,ENC_ASCII0x00000000|ENC_NA0x00000000),
656 | hour_from_utc,
657 | min_from_utc);
658 | }else{
659 | str = wmem_strdup_printf(pinfo->pool,
660 | "%u-%u-%u, %u:%u:%u.%u",
661 | year,
662 | month,
663 | day,
664 | hour,
665 | minutes,
666 | seconds,
667 | deci_seconds);
668 | }
669 |
670 | return proto_tree_add_string(tree, hfid, tvb, offset, length, str);
671 |
672 | }
673 |
674 | /*
675 | * dissect_snmp_VarBind
676 | * this routine dissects variable bindings, looking for the oid information in our oid repository
677 | * to format and add the value adequately.
678 | *
679 | * The choice to handwrite this code instead of using the asn compiler is to avoid having tons
680 | * of uses of global variables distributed in very different parts of the code.
681 | * Other than that there's a cosmetic thing: the tree from ASN generated code would be so
682 | * convoluted due to the nesting of CHOICEs in the definition of VarBind/value.
683 | *
684 | * XXX: the length of this function (~400 lines) is an aberration!
685 | * oid_key_t:key_type could become a series of callbacks instead of an enum
686 | * the (! oid_info_is_ok) switch could be made into an array (would be slower)
687 | *
688 |
689 | NetworkAddress ::= CHOICE { internet IpAddress }
690 | IpAddress ::= [APPLICATION 0] IMPLICIT OCTET STRING (SIZE (4))
691 | TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
692 | Integer32 ::= INTEGER (-2147483648..2147483647)
693 | ObjectName ::= OBJECT IDENTIFIER
694 | Counter32 ::= [APPLICATION 1] IMPLICIT INTEGER (0..4294967295)
695 | Gauge32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
696 | Unsigned32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
697 | Integer-value ::= INTEGER (-2147483648..2147483647)
698 | Integer32 ::= INTEGER (-2147483648..2147483647)
699 | ObjectID-value ::= OBJECT IDENTIFIER
700 | Empty ::= NULL
701 | TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
702 | Opaque ::= [APPLICATION 4] IMPLICIT OCTET STRING
703 | Counter64 ::= [APPLICATION 6] IMPLICIT INTEGER (0..18446744073709551615)
704 |
705 | ObjectSyntax ::= CHOICE {
706 | simple SimpleSyntax,
707 | application-wide ApplicationSyntax
708 | }
709 |
710 | SimpleSyntax ::= CHOICE {
711 | integer-value Integer-value,
712 | string-value String-value,
713 | objectID-value ObjectID-value,
714 | empty Empty
715 | }
716 |
717 | ApplicationSyntax ::= CHOICE {
718 | ipAddress-value IpAddress,
719 | counter-value Counter32,
720 | timeticks-value TimeTicks,
721 | arbitrary-value Opaque,
722 | big-counter-value Counter64,
723 | unsigned-integer-value Unsigned32
724 | }
725 |
726 | ValueType ::= CHOICE {
727 | value ObjectSyntax,
728 | unSpecified NULL,
729 | noSuchObject[0] IMPLICIT NULL,
730 | noSuchInstance[1] IMPLICIT NULL,
731 | endOfMibView[2] IMPLICIT NULL
732 | }
733 |
734 | VarBind ::= SEQUENCE {
735 | name ObjectName,
736 | valueType ValueType
737 | }
738 |
739 | */
740 |
741 | static unsigned
742 | dissect_snmp_VarBind(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb, unsigned offset,
743 | asn1_ctx_t *actx, proto_tree *tree, int hf_index _U___attribute__((unused)))
744 | {
745 | int seq_offset, name_offset, value_offset, value_start;
746 | uint32_t seq_len, name_len, value_len;
747 | int8_t ber_class;
748 | bool_Bool pc;
749 | int32_t tag;
750 | bool_Bool ind;
751 | uint32_t* subids;
752 | uint8_t* oid_bytes;
753 | oid_info_t* oid_info = NULL((void*)0);
754 | unsigned oid_matched, oid_left;
755 | proto_item *pi_name, *pi_varbind, *pi_value = NULL((void*)0);
756 | proto_tree *pt, *pt_varbind, *pt_name, *pt_value;
757 | char label[ITEM_LABEL_LENGTH240];
758 | const char* repr = NULL((void*)0);
759 | const char* info_oid = NULL((void*)0);
760 | char* valstr;
761 | int hfid = -1;
762 | int min_len = 0, max_len = 0;
763 | bool_Bool oid_info_is_ok;
764 | const char* oid_string = NULL((void*)0);
765 | enum {BER_NO_ERROR, BER_WRONG_LENGTH, BER_WRONG_TAG} format_error = BER_NO_ERROR;
766 |
767 | seq_offset = offset;
768 |
769 | /* first have the VarBind's sequence header */
770 | offset = dissect_ber_identifier(actx->pinfo, tree, tvb, offset, &ber_class, &pc, &tag);
771 | offset = dissect_ber_length(actx->pinfo, tree, tvb, offset, &seq_len, &ind);
772 |
773 | if (!pc && ber_class==BER_CLASS_UNI0 && tag==BER_UNI_TAG_SEQUENCE16) {
774 | proto_item* pi;
775 | pt = proto_tree_add_subtree(tree, tvb, seq_offset, seq_len + (offset - seq_offset),
776 | ett_decoding_error, &pi, "VarBind must be an universal class sequence");
777 | expert_add_info(actx->pinfo, pi, &ei_snmp_varbind_not_uni_class_seq);
778 | return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
779 | }
780 |
781 | if (ind) {
782 | proto_item* pi;
783 | pt = proto_tree_add_subtree(tree, tvb, seq_offset, seq_len + (offset - seq_offset),
784 | ett_decoding_error, &pi, "Indicator must be clear in VarBind");
785 | expert_add_info(actx->pinfo, pi, &ei_snmp_varbind_has_indicator);
786 | return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
787 | }
788 |
789 | /* we add the varbind tree root with a dummy label we'll fill later on */
790 | pt_varbind = proto_tree_add_subtree(tree,tvb,offset,seq_len,ett_varbind,&pi_varbind,"VarBind");
791 | *label = '\0';
792 |
793 | seq_len += offset - seq_offset;
794 |
795 | /* then we have the ObjectName's header */
796 |
797 | offset = dissect_ber_identifier(actx->pinfo, pt_varbind, tvb, offset, &ber_class, &pc, &tag);
798 | name_offset = offset = dissect_ber_length(actx->pinfo, pt_varbind, tvb, offset, &name_len, &ind);
799 |
800 | if (! ( !pc && ber_class==BER_CLASS_UNI0 && tag==BER_UNI_TAG_OID6) ) {
801 | proto_item* pi;
802 | pt = proto_tree_add_subtree(tree, tvb, seq_offset, seq_len,
803 | ett_decoding_error, &pi, "ObjectName must be an OID in primitive encoding");
804 | expert_add_info(actx->pinfo, pi, &ei_snmp_objectname_not_oid);
805 | return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
806 | }
807 |
808 | if (ind) {
809 | proto_item* pi;
810 | pt = proto_tree_add_subtree(tree, tvb, seq_offset, seq_len,
811 | ett_decoding_error, &pi, "Indicator must be clear in ObjectName");
812 | expert_add_info(actx->pinfo, pi, &ei_snmp_objectname_has_indicator);
813 | return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
814 | }
815 |
816 | pi_name = proto_tree_add_item(pt_varbind,hf_snmp_objectname,tvb,name_offset,name_len,ENC_NA0x00000000);
817 | pt_name = proto_item_add_subtree(pi_name,ett_name);
818 |
819 | offset += name_len;
820 | value_start = offset;
821 | /* then we have the value's header */
822 | offset = dissect_ber_identifier(actx->pinfo, pt_varbind, tvb, offset, &ber_class, &pc, &tag);
823 | value_offset = dissect_ber_length(actx->pinfo, pt_varbind, tvb, offset, &value_len, &ind);
824 |
825 | if (! (!pc) ) {
826 | proto_item* pi;
827 | pt = proto_tree_add_subtree(pt_varbind, tvb, value_start, value_len,
828 | ett_decoding_error, &pi, "the value must be in primitive encoding");
829 | expert_add_info(actx->pinfo, pi, &ei_snmp_value_not_primitive_encoding);
830 | return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
831 | }
832 |
833 | /* Now, we know where everything is */
834 |
835 | /* fetch ObjectName and its relative oid_info */
836 | oid_bytes = (uint8_t*)tvb_memdup(actx->pinfo->pool, tvb, name_offset, name_len);
837 | oid_info = oid_get_from_encoded(actx->pinfo->pool, oid_bytes, name_len, &subids, &oid_matched, &oid_left);
838 |
839 | add_oid_debug_subtree(oid_info,pt_name)((void)0);
840 |
841 | if (!subids) {
842 | proto_item* pi;
843 |
844 | repr = oid_encoded2string(actx->pinfo->pool, oid_bytes, name_len);
845 | pt = proto_tree_add_subtree_format(pt_name,tvb, 0, 0, ett_decoding_error, &pi, "invalid oid: %s", repr);
846 | expert_add_info_format(actx->pinfo, pi, &ei_snmp_invalid_oid, "invalid oid: %s", repr);
847 | return dissect_unknown_ber(actx->pinfo, tvb, name_offset, pt);
848 | }
849 |
850 | if (oid_matched+oid_left) {
851 | oid_string = oid_subid2string(actx->pinfo->pool, subids,oid_matched+oid_left);
852 | }
853 |
854 | if (ber_class == BER_CLASS_CON2) {
855 | /* if we have an error value just add it and get out the way ASAP */
856 | proto_item* pi;
857 | const char* note;
858 |
859 | if (value_len != 0) {
860 | min_len = max_len = 0;
861 | format_error = BER_WRONG_LENGTH;
862 | }
863 |
864 | switch (tag) {
865 | case SERR_NSO0:
866 | hfid = hf_snmp_noSuchObject;
867 | note = "noSuchObject";
868 | break;
869 | case SERR_NSI1:
870 | hfid = hf_snmp_noSuchInstance;
871 | note = "noSuchInstance";
872 | break;
873 | case SERR_EOM2:
874 | hfid = hf_snmp_endOfMibView;
875 | note = "endOfMibView";
876 | break;
877 | default: {
878 | pt = proto_tree_add_subtree_format(pt_varbind,tvb,0,0,ett_decoding_error,&pi,
879 | "Wrong tag for Error Value: expected 0, 1, or 2 but got: %d",tag);
880 | expert_add_info(actx->pinfo, pi, &ei_snmp_varbind_wrong_tag);
881 | return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
882 | }
883 | }
884 |
885 | pi = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,ENC_BIG_ENDIAN0x00000000);
886 | expert_add_info_format(actx->pinfo, pi, &ei_snmp_varbind_response, "%s",note);
887 | (void) g_strlcpy (label, note, ITEM_LABEL_LENGTH240);
888 | goto set_label;
889 | }
890 |
891 | /* 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 */
892 | switch (oid_info->kind) {
893 | case OID_KIND_SCALAR:
894 | if (oid_left == 1) {
895 | /* OK: we got the instance sub-id */
896 | proto_tree_add_uint64(pt_name,hf_snmp_scalar_instance_index,tvb,name_offset,name_len,subids[oid_matched]);
897 | oid_info_is_ok = true1;
898 | goto indexing_done;
899 | } else if (oid_left == 0) {
900 | if (ber_class == BER_CLASS_UNI0 && tag == BER_UNI_TAG_NULL5) {
901 | /* unSpecified does not require an instance sub-id add the new value and get off the way! */
902 | pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,ENC_NA0x00000000);
903 | goto set_label;
904 | } else {
905 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_no_instance_subid,tvb,0,0);
906 | oid_info_is_ok = false0;
907 | goto indexing_done;
908 | }
909 | } else {
910 | proto_tree_add_expert_format(pt_name,actx->pinfo,&ei_snmp_wrong_num_of_subids,tvb,0,0,"A scalar should have only one instance sub-id this has: %d",oid_left);
911 | oid_info_is_ok = false0;
912 | goto indexing_done;
913 | }
914 | break;
915 | case OID_KIND_COLUMN:
916 | if ( oid_info->parent->kind == OID_KIND_ROW) {
917 | oid_key_t* k = oid_info->parent->key;
918 | unsigned key_start = oid_matched;
919 | unsigned key_len = oid_left;
920 | oid_info_is_ok = true1;
921 |
922 | if ( key_len == 0 && ber_class == BER_CLASS_UNI0 && tag == BER_UNI_TAG_NULL5) {
923 | /* unSpecified does not require an instance sub-id add the new value and get off the way! */
924 | pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,ENC_NA0x00000000);
925 | goto set_label;
926 | }
927 |
928 | if (k) {
929 | for (;k;k = k->next) {
930 | unsigned suboid_len;
931 |
932 | if (key_start >= oid_matched+oid_left) {
933 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_index_suboid_too_short,tvb,0,0);
934 | oid_info_is_ok = false0;
935 | goto indexing_done;
936 | }
937 |
938 | switch(k->key_type) {
939 | case OID_KEY_TYPE_WRONG: {
940 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_unimplemented_instance_index,tvb,0,0);
941 | oid_info_is_ok = false0;
942 | goto indexing_done;
943 | }
944 | case OID_KEY_TYPE_INTEGER: {
945 | if (FT_IS_INT(k->ft_type)(((k->ft_type) == FT_INT8 || (k->ft_type) == FT_INT16 || (k->ft_type) == FT_INT24 || (k->ft_type) == FT_INT32) || ((k->ft_type) == FT_INT40 || (k->ft_type) == FT_INT48 || (k->ft_type) == FT_INT56 || (k->ft_type) == FT_INT64))) {
946 | proto_tree_add_int(pt_name,k->hfid,tvb,name_offset,name_len,(unsigned)subids[key_start]);
947 | } else { /* if it's not an unsigned int let proto_tree_add_uint throw a warning */
948 | proto_tree_add_uint64(pt_name,k->hfid,tvb,name_offset,name_len,(unsigned)subids[key_start]);
949 | }
950 | key_start++;
951 | key_len--;
952 | continue; /* k->next */
953 | }
954 | case OID_KEY_TYPE_IMPLIED_OID:
955 | suboid_len = key_len;
956 |
957 | goto show_oid_index;
958 |
959 | case OID_KEY_TYPE_OID: {
960 | uint8_t* suboid_buf;
961 | unsigned suboid_buf_len;
962 | uint32_t* suboid;
963 |
964 | suboid_len = subids[key_start++];
965 | key_len--;
966 |
967 | show_oid_index:
968 | suboid = &(subids[key_start]);
969 |
970 | if( suboid_len == 0 ) {
971 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_index_suboid_len0,tvb,0,0);
972 | oid_info_is_ok = false0;
973 | goto indexing_done;
974 | }
975 |
976 | if( key_len < suboid_len ) {
977 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_index_suboid_too_long,tvb,0,0);
978 | oid_info_is_ok = false0;
979 | goto indexing_done;
980 | }
981 |
982 | suboid_buf_len = oid_subid2encoded(actx->pinfo->pool, suboid_len, suboid, &suboid_buf);
983 |
984 | DISSECTOR_ASSERT(suboid_buf_len)((void) ((suboid_buf_len) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\"", "epan/dissectors/packet-snmp.c" , 984, "suboid_buf_len"))));
985 |
986 | proto_tree_add_oid(pt_name,k->hfid,tvb,name_offset, suboid_buf_len, suboid_buf);
987 |
988 | key_start += suboid_len;
989 | key_len -= suboid_len + 1;
990 | continue; /* k->next */
991 | }
992 | default: {
993 | uint8_t* buf;
994 | unsigned buf_len;
995 | uint32_t* suboid;
996 | unsigned i;
997 |
998 |
999 | switch (k->key_type) {
1000 | case OID_KEY_TYPE_IPADDR:
1001 | suboid = &(subids[key_start]);
1002 | buf_len = 4;
1003 | break;
1004 | case OID_KEY_TYPE_IMPLIED_STRING:
1005 | case OID_KEY_TYPE_IMPLIED_BYTES:
1006 | case OID_KEY_TYPE_ETHER:
1007 | suboid = &(subids[key_start]);
1008 | buf_len = key_len;
1009 | break;
1010 | default:
1011 | buf_len = k->num_subids;
1012 | suboid = &(subids[key_start]);
1013 |
1014 | if(!buf_len) {
1015 | buf_len = *suboid++;
1016 | key_len--;
1017 | key_start++;
1018 | }
1019 | break;
1020 | }
1021 |
1022 | if( key_len < buf_len ) {
1023 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_index_string_too_long,tvb,0,0);
1024 | oid_info_is_ok = false0;
1025 | goto indexing_done;
1026 | }
1027 |
1028 | buf = (uint8_t*)wmem_alloc(actx->pinfo->pool, buf_len+1);
1029 | for (i = 0; i < buf_len; i++)
1030 | buf[i] = (uint8_t)suboid[i];
1031 | buf[i] = '\0';
1032 |
1033 | switch(k->key_type) {
1034 | case OID_KEY_TYPE_STRING:
1035 | case OID_KEY_TYPE_IMPLIED_STRING:
1036 | proto_tree_add_string(pt_name,k->hfid,tvb,name_offset,buf_len, (char*)buf);
1037 | break;
1038 | case OID_KEY_TYPE_BYTES:
1039 | case OID_KEY_TYPE_NSAP:
1040 | case OID_KEY_TYPE_IMPLIED_BYTES:
1041 | proto_tree_add_bytes(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
1042 | break;
1043 | case OID_KEY_TYPE_ETHER:
1044 | proto_tree_add_ether(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
1045 | break;
1046 | case OID_KEY_TYPE_IPADDR: {
1047 | uint32_t* ipv4_p = (uint32_t*)buf;
1048 | proto_tree_add_ipv4(pt_name,k->hfid,tvb,name_offset,buf_len, *ipv4_p);
1049 | }
1050 | break;
1051 | default:
1052 | DISSECTOR_ASSERT_NOT_REACHED()(proto_report_dissector_bug("%s:%u: failed assertion \"DISSECTOR_ASSERT_NOT_REACHED\"" , "epan/dissectors/packet-snmp.c", 1052));
1053 | break;
1054 | }
1055 |
1056 | key_start += buf_len;
1057 | key_len -= buf_len;
1058 | continue; /* k->next*/
1059 | }
1060 | }
1061 | }
1062 | goto indexing_done;
1063 | } else {
1064 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_unimplemented_instance_index,tvb,0,0);
1065 | oid_info_is_ok = false0;
1066 | goto indexing_done;
1067 | }
1068 | } else {
1069 | proto_tree_add_expert(pt_name,actx->pinfo,&ei_snmp_column_parent_not_row,tvb,0,0);
1070 | oid_info_is_ok = false0;
1071 | goto indexing_done;
1072 | }
1073 | default: {
1074 | /* proto_tree_add_expert (pt_name,actx->pinfo,PI_MALFORMED, PI_WARN,tvb,0,0,"This kind OID should have no value"); */
1075 | oid_info_is_ok = false0;
1076 | goto indexing_done;
1077 | }
1078 | }
1079 | indexing_done:
1080 |
1081 | if (oid_info_is_ok && oid_info->value_type) {
1082 | if (ber_class == BER_CLASS_UNI0 && tag == BER_UNI_TAG_NULL5) {
1083 | pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,ENC_NA0x00000000);
1084 | } else {
1085 | /* Provide a tree_item to attach errors to, if needed. */
1086 | pi_value = pi_name;
1087 |
1088 | if ((oid_info->value_type->ber_class != BER_CLASS_ANY99) &&
1089 | (ber_class != oid_info->value_type->ber_class))
1090 | format_error = BER_WRONG_TAG;
1091 | else if ((oid_info->value_type->ber_tag != BER_TAG_ANY-1) &&
1092 | (tag != oid_info->value_type->ber_tag))
1093 | format_error = BER_WRONG_TAG;
1094 | else {
1095 | max_len = oid_info->value_type->max_len == -1 ? 0xffffff : oid_info->value_type->max_len;
1096 | min_len = oid_info->value_type->min_len;
1097 |
1098 | if ((int)value_len < min_len || (int)value_len > max_len)
1099 | format_error = BER_WRONG_LENGTH;
1100 | }
1101 |
1102 | if (format_error == BER_NO_ERROR) {
1103 | /* Special case DATE AND TIME */
1104 | if((oid_info->value_type)&&(oid_info->value_type->keytype == OID_KEY_TYPE_DATE_AND_TIME)&&(value_len > 7)){
1105 | pi_value = dissect_snmp_variable_date_and_time(pt_varbind, actx->pinfo, oid_info->value_hfid, tvb, value_offset, value_len);
1106 | } else {
1107 | pi_value = proto_tree_add_item(pt_varbind,oid_info->value_hfid,tvb,value_offset,value_len,ENC_BIG_ENDIAN0x00000000);
1108 | }
1109 | }
1110 | }
1111 | } else {
1112 | switch(ber_class|(tag<<4)) {
1113 | case BER_CLASS_UNI0|(BER_UNI_TAG_INTEGER2<<4):
1114 | {
1115 | int64_t val=0;
1116 | unsigned int int_val_offset = value_offset;
1117 | unsigned int i;
1118 |
1119 | max_len = 4; min_len = 1;
1120 | if (value_len > (unsigned)max_len || value_len < (unsigned)min_len) {
1121 | hfid = hf_snmp_integer32_value;
1122 | format_error = BER_WRONG_LENGTH;
1123 | break;
1124 | }
1125 |
1126 | if(value_len > 0) {
1127 | /* extend sign bit */
1128 | if(tvb_get_uint8(tvb, int_val_offset)&0x80) {
1129 | val=-1;
1130 | }
1131 | for(i=0;i<value_len;i++) {
1132 | val=(val<<8)|tvb_get_uint8(tvb, int_val_offset);
1133 | int_val_offset++;
1134 | }
1135 | }
1136 | pi_value = proto_tree_add_int64(pt_varbind, hf_snmp_integer32_value, tvb,value_offset,value_len, val);
1137 |
1138 | goto already_added;
1139 | }
1140 | case BER_CLASS_UNI0|(BER_UNI_TAG_OCTETSTRING4<<4):
1141 | if(oid_info->value_hfid> -1){
1142 | hfid = oid_info->value_hfid;
1143 | }else{
1144 | hfid = hf_snmp_octetstring_value;
1145 | }
1146 | break;
1147 | case BER_CLASS_UNI0|(BER_UNI_TAG_OID6<<4):
1148 | max_len = -1; min_len = 1;
1149 | if (value_len < (unsigned)min_len) format_error = BER_WRONG_LENGTH;
1150 | hfid = hf_snmp_oid_value;
1151 | break;
1152 | case BER_CLASS_UNI0|(BER_UNI_TAG_NULL5<<4):
1153 | max_len = 0; min_len = 0;
1154 | if (value_len != 0) format_error = BER_WRONG_LENGTH;
1155 | hfid = hf_snmp_null_value;
1156 | break;
1157 | case BER_CLASS_APP1: /* | (SNMP_IPA<<4)*/
1158 | switch(value_len) {
1159 | case 4: hfid = hf_snmp_ipv4_value; break;
1160 | case 16: hfid = hf_snmp_ipv6_value; break;
1161 | default: hfid = hf_snmp_anyaddress_value; break;
1162 | }
1163 | break;
1164 | case BER_CLASS_APP1|(SNMP_U327<<4):
1165 | hfid = hf_snmp_unsigned32_value;
1166 | break;
1167 | case BER_CLASS_APP1|(SNMP_GGE2<<4):
1168 | hfid = hf_snmp_gauge32_value;
1169 | break;
1170 | case BER_CLASS_APP1|(SNMP_CNT1<<4):
1171 | hfid = hf_snmp_counter_value;
1172 | break;
1173 | case BER_CLASS_APP1|(SNMP_TIT3<<4):
1174 | hfid = hf_snmp_timeticks_value;
1175 | break;
1176 | case BER_CLASS_APP1|(SNMP_OPQ4<<4):
1177 | hfid = hf_snmp_opaque_value;
1178 | break;
1179 | case BER_CLASS_APP1|(SNMP_NSP5<<4):
1180 | hfid = hf_snmp_nsap_value;
1181 | break;
1182 | case BER_CLASS_APP1|(SNMP_C646<<4):
1183 | hfid = hf_snmp_big_counter_value;
1184 | break;
1185 | default:
1186 | hfid = hf_snmp_unknown_value;
1187 | break;
1188 | }
1189 | if (value_len > 8) {
1190 | /*
1191 | * Too long for an FT_UINT64 or an FT_INT64.
1192 | */
1193 | header_field_info *hfinfo = proto_registrar_get_nth(hfid);
1194 | if (hfinfo->type == FT_UINT64) {
1195 | /*
1196 | * Check if this is an unsigned int64 with
1197 | * a big value.
1198 | */
1199 | if (value_len > 9 || tvb_get_uint8(tvb, value_offset) != 0) {
1200 | /* It is. Fail. */
1201 | proto_tree_add_expert_format(pt_varbind,actx->pinfo,&ei_snmp_uint_too_large,tvb,value_offset,value_len,"Integral value too large");
1202 | goto already_added;
1203 | }
1204 | /* Cheat and skip the leading 0 byte */
1205 | value_len--;
1206 | value_offset++;
1207 | } else if (hfinfo->type == FT_INT64) {
1208 | /*
1209 | * For now, just reject these.
1210 | */
1211 | proto_tree_add_expert_format(pt_varbind,actx->pinfo,&ei_snmp_int_too_large,tvb,value_offset,value_len,"Integral value too large or too small");
1212 | goto already_added;
1213 | }
1214 | } else if (value_len == 0) {
1215 | /*
1216 | * X.690 section 8.3.1 "Encoding of an integer value":
1217 | * "The encoding of an integer value shall be
1218 | * primitive. The contents octets shall consist of
1219 | * one or more octets."
1220 | *
1221 | * Zero is not "one or more".
1222 | */
1223 | header_field_info *hfinfo = proto_registrar_get_nth(hfid);
1224 | if (hfinfo->type == FT_UINT64 || hfinfo->type == FT_INT64) {
1225 | proto_tree_add_expert_format(pt_varbind,actx->pinfo,&ei_snmp_integral_value0,tvb,value_offset,value_len,"Integral value is zero-length");
1226 | goto already_added;
1227 | }
1228 | }
1229 | /* Special case DATE AND TIME */
1230 | if((oid_info->value_type)&&(oid_info->value_type->keytype == OID_KEY_TYPE_DATE_AND_TIME)&&(value_len > 7)){
1231 | pi_value = dissect_snmp_variable_date_and_time(pt_varbind, actx->pinfo, hfid, tvb, value_offset, value_len);
1232 | }else{
1233 | pi_value = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,ENC_BIG_ENDIAN0x00000000);
1234 | }
1235 | if (format_error != BER_NO_ERROR) {
1236 | expert_add_info(actx->pinfo, pi_value, &ei_snmp_missing_mib);
1237 | }
1238 |
1239 | }
1240 | already_added:
1241 | pt_value = proto_item_add_subtree(pi_value,ett_value);
1242 |
1243 | if (value_len > 0 && oid_string) {
1244 | tvbuff_t* sub_tvb = tvb_new_subset_length(tvb, value_offset, value_len);
1245 |
1246 | next_tvb_add_string(var_list, sub_tvb, (snmp_var_in_tree) ? pt_value : NULL((void*)0), value_sub_dissectors_table, oid_string);
1247 | }
1248 |
1249 |
1250 | set_label:
1251 | if (pi_value) proto_item_fill_label(PITEM_FINFO(pi_value)((pi_value)->finfo), label, NULL((void*)0));
1252 |
1253 | if (oid_info && oid_info->name) {
1254 | if (oid_left >= 1) {
1255 | repr = wmem_strdup_printf(actx->pinfo->pool, "%s.%s (%s)", oid_info->name,
1256 | oid_subid2string(actx->pinfo->pool, &(subids[oid_matched]),oid_left),
1257 | oid_subid2string(actx->pinfo->pool, subids,oid_matched+oid_left));
1258 | info_oid = wmem_strdup_printf(actx->pinfo->pool, "%s.%s", oid_info->name,
1259 | oid_subid2string(actx->pinfo->pool, &(subids[oid_matched]),oid_left));
1260 | } else {
1261 | repr = wmem_strdup_printf(actx->pinfo->pool, "%s (%s)", oid_info->name,
1262 | oid_subid2string(actx->pinfo->pool, subids,oid_matched));
1263 | info_oid = oid_info->name;
1264 | }
1265 | } else if (oid_string) {
1266 | repr = wmem_strdup(actx->pinfo->pool, oid_string);
1267 | info_oid = oid_string;
1268 | } else {
1269 | repr = wmem_strdup(actx->pinfo->pool, "[Bad OID]");
1270 | }
1271 |
1272 | valstr = strstr(label,": ");
1273 | valstr = valstr ? valstr+2 : label;
1274 |
1275 | proto_item_set_text(pi_varbind,"%s: %s",repr,valstr);
1276 |
1277 | if (display_oid && info_oid) {
1278 | col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", info_oid);
1279 | }
1280 |
1281 | switch (format_error) {
1282 | case BER_WRONG_LENGTH: {
1283 | proto_item* pi;
1284 | proto_tree* p_tree = proto_item_add_subtree(pi_value,ett_decoding_error);
1285 | pt = proto_tree_add_subtree_format(p_tree,tvb,0,0,ett_decoding_error,&pi,
1286 | "Wrong value length: %u expecting: %u <= len <= %u",
1287 | value_len, min_len, max_len == -1 ? 0xFFFFFF : max_len);
1288 | expert_add_info(actx->pinfo, pi, &ei_snmp_varbind_wrong_length_value);
1289 | return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
1290 | }
1291 | case BER_WRONG_TAG: {
1292 | proto_item* pi;
1293 | proto_tree* p_tree = proto_item_add_subtree(pi_value,ett_decoding_error);
1294 | pt = proto_tree_add_subtree_format(p_tree,tvb,0,0,ett_decoding_error,&pi,
1295 | "Wrong class/tag for Value expected: %d,%d got: %d,%d",
1296 | oid_info->value_type->ber_class, oid_info->value_type->ber_tag,
1297 | ber_class, tag);
1298 | expert_add_info(actx->pinfo, pi, &ei_snmp_varbind_wrong_class_tag);
1299 | return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
1300 | }
1301 | default:
1302 | break;
1303 | }
1304 |
1305 | return seq_offset + seq_len;
1306 | }
1307 |
1308 |
1309 | #define F_SNMP_ENGINEID_CONFORM0x80 0x80
1310 | #define SNMP_ENGINEID_RFC19100x00 0x00
1311 | #define SNMP_ENGINEID_RFC34110x01 0x01
1312 |
1313 | static const true_false_string tfs_snmp_engineid_conform = {
1314 | "RFC3411 (SNMPv3)",
1315 | "RFC1910 (Non-SNMPv3)"
1316 | };
1317 |
1318 | #define SNMP_ENGINEID_FORMAT_IPV40x01 0x01
1319 | #define SNMP_ENGINEID_FORMAT_IPV60x02 0x02
1320 | #define SNMP_ENGINEID_FORMAT_MACADDRESS0x03 0x03
1321 | #define SNMP_ENGINEID_FORMAT_TEXT0x04 0x04
1322 | #define SNMP_ENGINEID_FORMAT_OCTETS0x05 0x05
1323 | #define SNMP_ENGINEID_FORMAT_LOCAL0x06 0x06
1324 |
1325 | static const value_string snmp_engineid_format_vals[] = {
1326 | { SNMP_ENGINEID_FORMAT_IPV40x01, "IPv4 address" },
1327 | { SNMP_ENGINEID_FORMAT_IPV60x02, "IPv6 address" },
1328 | { SNMP_ENGINEID_FORMAT_MACADDRESS0x03, "MAC address" },
1329 | { SNMP_ENGINEID_FORMAT_TEXT0x04, "Text, administratively assigned" },
1330 | { SNMP_ENGINEID_FORMAT_OCTETS0x05, "Octets, administratively assigned" },
1331 | { SNMP_ENGINEID_FORMAT_LOCAL0x06, "Local engine" },
1332 | { 0, NULL((void*)0) }
1333 | };
1334 |
1335 | #define SNMP_ENGINEID_CISCO_AGENT0x00 0x00
1336 | #define SNMP_ENGINEID_CISCO_MANAGER0x01 0x01
1337 |
1338 | static const value_string snmp_engineid_cisco_type_vals[] = {
1339 | { SNMP_ENGINEID_CISCO_AGENT0x00, "Agent" },
1340 | { SNMP_ENGINEID_CISCO_MANAGER0x01, "Manager" },
1341 | { 0, NULL((void*)0) }
1342 | };
1343 |
1344 | /*
1345 | * SNMP Engine ID dissection according to RFC 3411 (SnmpEngineID TC)
1346 | * or historic RFC 1910 (AgentID)
1347 | */
1348 | int
1349 | dissect_snmp_engineid(proto_tree *tree, packet_info *pinfo, tvbuff_t *tvb, int offset, int len)
1350 | {
1351 | proto_item *item = NULL((void*)0);
1352 | uint8_t conformance, format;
1353 | uint32_t enterpriseid;
1354 | time_t seconds;
1355 | nstime_t ts;
1356 | int len_remain = len;
1357 |
1358 | /* first bit: engine id conformance */
1359 | if (len_remain<1) return offset;
1360 | conformance = ((tvb_get_uint8(tvb, offset)>>7) & 0x01);
1361 | proto_tree_add_item(tree, hf_snmp_engineid_conform, tvb, offset, 1, ENC_BIG_ENDIAN0x00000000);
1362 |
1363 | /* 4-byte enterprise number/name */
1364 | if (len_remain<4) return offset;
1365 | enterpriseid = tvb_get_ntohl(tvb, offset);
1366 | if (conformance)
1367 | enterpriseid -= 0x80000000; /* ignore first bit */
1368 | proto_tree_add_uint(tree, hf_snmp_engineid_enterprise, tvb, offset, 4, enterpriseid);
1369 | offset+=4;
1370 | len_remain-=4;
1371 |
1372 | switch(conformance) {
1373 |
1374 | case SNMP_ENGINEID_RFC19100x00:
1375 | /* 12-byte AgentID w/ 8-byte trailer */
1376 | if (len_remain==8) {
1377 | proto_tree_add_item(tree, hf_snmp_agentid_trailer, tvb, offset, 8, ENC_NA0x00000000);
1378 | offset+=8;
1379 | len_remain-=8;
1380 | } else {
1381 | proto_tree_add_expert(tree, pinfo, &ei_snmp_rfc1910_non_conformant, tvb, offset, len_remain);
1382 | return offset;
1383 | }
1384 | break;
1385 |
1386 | case SNMP_ENGINEID_RFC34110x01: /* variable length: 5..32 */
1387 |
1388 | /* 1-byte format specifier */
1389 | if (len_remain<1) return offset;
1390 | format = tvb_get_uint8(tvb, offset);
1391 | item = proto_tree_add_uint_format(tree, hf_snmp_engineid_format, tvb, offset, 1, format, "Engine ID Format: %s (%d)",
1392 | val_to_str_const(format, snmp_engineid_format_vals, "Reserved/Enterprise-specific"),
1393 | format);
1394 | offset+=1;
1395 | len_remain-=1;
1396 |
1397 | switch(format) {
1398 | case SNMP_ENGINEID_FORMAT_IPV40x01:
1399 | /* 4-byte IPv4 address */
1400 | if (len_remain==4) {
1401 | proto_tree_add_item(tree, hf_snmp_engineid_ipv4, tvb, offset, 4, ENC_BIG_ENDIAN0x00000000);
1402 | offset+=4;
1403 | len_remain=0;
1404 | }
1405 | break;
1406 | case SNMP_ENGINEID_FORMAT_IPV60x02:
1407 | /* 16-byte IPv6 address */
1408 | if (len_remain==16) {
1409 | proto_tree_add_item(tree, hf_snmp_engineid_ipv6, tvb, offset, 16, ENC_NA0x00000000);
1410 | offset+=16;
1411 | len_remain=0;
1412 | }
1413 | break;
1414 | case SNMP_ENGINEID_FORMAT_MACADDRESS0x03:
1415 | /* See: https://supportforums.cisco.com/message/3010617#3010617 for details. */
1416 | if ((enterpriseid==9)&&(len_remain==7)) {
1417 | proto_tree_add_item(tree, hf_snmp_engineid_cisco_type, tvb, offset, 1, ENC_BIG_ENDIAN0x00000000);
1418 | offset++;
1419 | len_remain--;
1420 | }
1421 | /* 6-byte MAC address */
1422 | if (len_remain==6) {
1423 | proto_tree_add_item(tree, hf_snmp_engineid_mac, tvb, offset, 6, ENC_NA0x00000000);
1424 | offset+=6;
1425 | len_remain=0;
1426 | }
1427 | break;
1428 | case SNMP_ENGINEID_FORMAT_TEXT0x04:
1429 | /* max. 27-byte string, administratively assigned */
1430 | if (len_remain<=27) {
1431 | proto_tree_add_item(tree, hf_snmp_engineid_text, tvb, offset, len_remain, ENC_ASCII0x00000000);
1432 | offset+=len_remain;
1433 | len_remain=0;
1434 | }
1435 | break;
1436 | case SNMP_ENGINEID_FORMAT_LOCAL0x06:
1437 | break;
1438 | case 128:
1439 | /* most common enterprise-specific format: (ucd|net)-snmp random */
1440 | if ((enterpriseid==2021)||(enterpriseid==8072)) {
1441 | proto_item_append_text(item, (enterpriseid==2021) ? ": UCD-SNMP Random" : ": Net-SNMP Random");
1442 | /* demystify: 4B random, 4B/8B epoch seconds */
1443 | if ((len_remain==8) || (len_remain==12)) {
1444 | proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, 4, ENC_NA0x00000000);
1445 | if (len_remain==8) {
1446 | seconds = (time_t)tvb_get_letohl(tvb, offset + 4);
1447 | } else {
1448 | seconds = (time_t)tvb_get_letohi64(tvb, offset + 4);
1449 | }
1450 | ts.secs = seconds;
1451 | ts.nsecs = 0;
1452 | proto_tree_add_time_format_value(tree, hf_snmp_engineid_time, tvb, offset + 4, len_remain - 4,
1453 | &ts, "%s",
1454 | abs_time_secs_to_str(pinfo->pool, seconds, ABSOLUTE_TIME_LOCAL, true)abs_time_secs_to_str_ex(pinfo->pool, seconds, ABSOLUTE_TIME_LOCAL , (1) ? (1U << 0) : 0));
1455 | offset+=len_remain;
1456 | len_remain=0;
1457 | }
1458 | break;
1459 | }
1460 | /* fall through */
1461 | case SNMP_ENGINEID_FORMAT_OCTETS0x05:
1462 | default:
1463 | /* max. 27 bytes, administratively assigned or unknown format */
1464 | if (len_remain>0 && len_remain<=27) {
1465 | proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, len_remain, ENC_NA0x00000000);
1466 | offset+=len_remain;
1467 | len_remain=0;
1468 | }
1469 | break;
1470 | }
1471 | }
1472 |
1473 | if (len_remain>0) {
1474 | proto_tree_add_expert(tree, pinfo, &ei_snmp_rfc3411_non_conformant, tvb, offset, len_remain);
1475 | offset+=len_remain;
1476 | }
1477 | return offset;
1478 | }
1479 |
1480 |
1481 | static void set_ue_keys(snmp_ue_assoc_t* n ) {
1482 | unsigned const key_size = auth_hash_len[n->user.authModel];
1483 |
1484 | n->user.authKey.data = (uint8_t *)g_malloc(key_size);
1485 | n->user.authKey.len = key_size;
1486 | snmp_usm_password_to_key(n->user.authModel,
1487 | n->user.authPassword.data,
1488 | n->user.authPassword.len,
1489 | n->engine.data,
1490 | n->engine.len,
1491 | n->user.authKey.data);
1492 |
1493 | if (n->priv_proto == PRIV_AES1281 || n->priv_proto == PRIV_AES1922 || n->priv_proto == PRIV_AES2563) {
17 | ← | Assuming field 'priv_proto' is not equal to PRIV_AES128 | →
18 | ← | Assuming field 'priv_proto' is not equal to PRIV_AES192 | →
19 | ← | Assuming field 'priv_proto' is equal to PRIV_AES256 | →
1494 | unsigned need_key_len =
1495 | (n->priv_proto
19.1 | Field 'priv_proto' is not equal to PRIV_AES128
== PRIV_AES1281) ? 16 :
1496 | (n->priv_proto
19.2 | Field 'priv_proto' is not equal to PRIV_AES192
== PRIV_AES1922) ? 24 :
1497 | (n->priv_proto
19.3 | Field 'priv_proto' is equal to PRIV_AES256
== PRIV_AES2563) ? 32 :
20 | ← | '?' condition is true | →
1498 | 0;
1499 |
1500 | unsigned key_len = key_size;
1501 |
1502 | while (key_len < need_key_len)
21 | ← | Assuming 'key_len' is < 'need_key_len' | →
22 | ← | Loop condition is true. Entering loop body | →
23 | ← | Assuming 'key_len' is >= 'need_key_len' | →
24 | ← | Loop condition is false. Execution continues on line 1505 | →
1503 | key_len += key_size;
1504 |
1505 | n->user.privKey.data = (uint8_t *)g_malloc(key_len);
25 | ← | Storing uninitialized value | →
1506 | n->user.privKey.len = need_key_len;
1507 |
1508 | snmp_usm_password_to_key(n->user.authModel,
26 | ← | Calling 'snmp_usm_password_to_key' | →
30 | ← | Returning from 'snmp_usm_password_to_key' | →
1509 | n->user.privPassword.data,
1510 | n->user.privPassword.len,
1511 | n->engine.data,
1512 | n->engine.len,
1513 | n->user.privKey.data);
1514 |
1515 | key_len = key_size;
1516 |
1517 | /* extend key if needed */
1518 | while (key_len
30.1 | 'key_len' is < 'need_key_len'
< need_key_len) {
31 | ← | Loop condition is true. Entering loop body | →
1519 | switch (n->priv_key_exp) {
32 | ← | Control jumps to 'case 0:' at line 1521 | →
1520 | /* Baed on draft-reeder-snmpv3-usm-3desede-00, section 2.1 */
1521 | case PRIVKEYEXP_USM_3DESDESEDE_000:
1522 | {
1523 | snmp_usm_password_to_key(n->user.authModel,
33 | ← | Calling 'snmp_usm_password_to_key' | →
1524 | n->user.privKey.data + (key_len - key_size),
1525 | key_size,
1526 | n->engine.data,
1527 | n->engine.len,
1528 | n->user.privKey.data + key_len);
1529 | break;
1530 | }
1531 | /* Based on snmp++ method PrivAES::extend_short_key in Agent++ */
1532 | case PRIVKEYEXP_AGENTPP1:
1533 | {
1534 | /* Key expansion in Agent++
1535 | * K1 = key
1536 | * K2 = hash(K1)
1537 | * K3 = hash(K1 | K2)
1538 | * localized_key = K1 | K2 | K3
1539 | */
1540 | gcry_md_hd_t hash_handle;
1541 |
1542 | if (gcry_md_open(&hash_handle, auth_hash_algo[n->user.authModel], 0)) {
1543 | return;
1544 | }
1545 |
1546 | gcry_md_write(hash_handle, n->user.privKey.data, key_len);
1547 | memcpy(n->user.privKey.data + key_len, gcry_md_read(hash_handle, 0), key_size);
1548 | gcry_md_close(hash_handle);
1549 |
1550 | break;
1551 | }
1552 |
1553 | default:
1554 | break;
1555 | }
1556 |
1557 | key_len += key_size;
1558 | }
1559 |
1560 | } else {
1561 | n->user.privKey.data = (uint8_t *)g_malloc(key_size);
1562 | n->user.privKey.len = key_size;
1563 | snmp_usm_password_to_key(n->user.authModel,
1564 | n->user.privPassword.data,
1565 | n->user.privPassword.len,
1566 | n->engine.data,
1567 | n->engine.len,
1568 | n->user.privKey.data);
1569 | }
1570 | }
1571 |
1572 | static snmp_ue_assoc_t*
1573 | ue_dup(snmp_ue_assoc_t* o)
1574 | {
1575 | snmp_ue_assoc_t* d = (snmp_ue_assoc_t*)g_memdup2(o,sizeof(snmp_ue_assoc_t));
1576 |
1577 | d->user.authModel = o->user.authModel;
1578 |
1579 | d->user.privProtocol = o->user.privProtocol;
1580 |
1581 | d->user.userName.data = (uint8_t *)g_memdup2(o->user.userName.data,o->user.userName.len);
1582 | d->user.userName.len = o->user.userName.len;
1583 |
1584 | d->user.authPassword.data = o->user.authPassword.data ? (uint8_t *)g_memdup2(o->user.authPassword.data,o->user.authPassword.len) : NULL((void*)0);
1585 | d->user.authPassword.len = o->user.authPassword.len;
1586 |
1587 | d->user.privPassword.data = o->user.privPassword.data ? (uint8_t *)g_memdup2(o->user.privPassword.data,o->user.privPassword.len) : NULL((void*)0);
1588 | d->user.privPassword.len = o->user.privPassword.len;
1589 |
1590 | d->engine.len = o->engine.len;
1591 |
1592 | if (d->engine.len) {
1593 | d->engine.data = (uint8_t *)g_memdup2(o->engine.data,o->engine.len);
1594 | set_ue_keys(d);
1595 | }
1596 |
1597 | return d;
1598 |
1599 | }
1600 |
1601 | static void*
1602 | snmp_users_copy_cb(void* dest, const void* orig, size_t len _U___attribute__((unused)))
1603 | {
1604 | const snmp_ue_assoc_t* o = (const snmp_ue_assoc_t*)orig;
1605 | snmp_ue_assoc_t* d = (snmp_ue_assoc_t*)dest;
1606 |
1607 | d->auth_model = o->auth_model;
1608 | d->user.authModel = (snmp_usm_auth_model_t) o->auth_model;
1609 |
1610 | d->priv_proto = o->priv_proto;
1611 | d->user.privProtocol = priv_protos[o->priv_proto];
1612 |
1613 | d->user.userName.data = (uint8_t*)g_memdup2(o->user.userName.data,o->user.userName.len);
1614 | d->user.userName.len = o->user.userName.len;
1615 |
1616 | d->user.authPassword.data = o->user.authPassword.data ? (uint8_t*)g_memdup2(o->user.authPassword.data,o->user.authPassword.len) : NULL((void*)0);
1617 | d->user.authPassword.len = o->user.authPassword.len;
1618 |
1619 | d->user.privPassword.data = o->user.privPassword.data ? (uint8_t*)g_memdup2(o->user.privPassword.data,o->user.privPassword.len) : NULL((void*)0);
1620 | d->user.privPassword.len = o->user.privPassword.len;
1621 |
1622 | d->engine.len = o->engine.len;
1623 | if (o->engine.data) {
1624 | d->engine.data = (uint8_t*)g_memdup2(o->engine.data,o->engine.len);
1625 | }
1626 |
1627 | d->user.authKey.data = o->user.authKey.data ? (uint8_t*)g_memdup2(o->user.authKey.data,o->user.authKey.len) : NULL((void*)0);
1628 | d->user.authKey.len = o->user.authKey.len;
1629 |
1630 | d->user.privKey.data = o->user.privKey.data ? (uint8_t*)g_memdup2(o->user.privKey.data,o->user.privKey.len) : NULL((void*)0);
1631 | d->user.privKey.len = o->user.privKey.len;
1632 |
1633 | return d;
1634 | }
1635 |
1636 | static void
1637 | snmp_users_free_cb(void* p)
1638 | {
1639 | snmp_ue_assoc_t* ue = (snmp_ue_assoc_t*)p;
1640 | g_free(ue->user.userName.data);
1641 | g_free(ue->user.authPassword.data);
1642 | g_free(ue->user.privPassword.data);
1643 | g_free(ue->user.authKey.data);
1644 | g_free(ue->user.privKey.data);
1645 | g_free(ue->engine.data);
1646 | }
1647 |
1648 | static bool_Bool
1649 | snmp_users_update_cb(void* p _U___attribute__((unused)), char** err)
1650 | {
1651 | snmp_ue_assoc_t* ue = (snmp_ue_assoc_t*)p;
1652 | GString* es = g_string_new("");
1653 | unsigned int i;
1654 |
1655 | *err = NULL((void*)0);
1656 |
1657 | if (! ue->user.userName.len) {
1658 | g_string_append_printf(es,"no userName\n");
1659 | } else if ((ue->engine.len > 0) && (ue->engine.len < 5 || ue->engine.len > 32)) {
1660 | /* RFC 3411 section 5 */
1661 | g_string_append_printf(es, "Invalid engineId length (%u). Must be between 5 and 32 (10 and 64 hex digits)\n", ue->engine.len);
1662 | } else if (num_ueas) {
1663 | for (i=0; i<num_ueas-1; i++) {
1664 | snmp_ue_assoc_t* u = &(ueas[i]);
1665 |
1666 | if ( u->user.userName.len == ue->user.userName.len
1667 | && u->engine.len == ue->engine.len && (u != ue)) {
1668 |
1669 | if (u->engine.len > 0 && memcmp( u->engine.data, ue->engine.data, u->engine.len ) == 0) {
1670 | if ( memcmp( u->user.userName.data, ue->user.userName.data, ue->user.userName.len ) == 0 ) {
1671 | /* XXX: make a string for the engineId */
1672 | g_string_append_printf(es,"Duplicate key (userName='%s')\n",ue->user.userName.data);
1673 | break;
1674 | }
1675 | }
1676 |
1677 | if (u->engine.len == 0) {
1678 | if ( memcmp( u->user.userName.data, ue->user.userName.data, ue->user.userName.len ) == 0 ) {
1679 | g_string_append_printf(es,"Duplicate key (userName='%s' engineId=NONE)\n",ue->user.userName.data);
1680 | break;
1681 | }
1682 | }
1683 | }
1684 | }
1685 | }
1686 |
1687 | if (es->len) {
1688 | es = g_string_truncate(es,es->len-1)g_string_truncate_inline (es, es->len-1);
1689 | *err = g_string_free(es, FALSE)(__builtin_constant_p ((0)) ? (((0)) ? (g_string_free) ((es), ((0))) : g_string_free_and_steal (es)) : (g_string_free) ((es ), ((0))));
1690 | return false0;
1691 | }
1692 |
1693 | g_string_free(es, TRUE)(__builtin_constant_p ((!(0))) ? (((!(0))) ? (g_string_free) ( (es), ((!(0)))) : g_string_free_and_steal (es)) : (g_string_free ) ((es), ((!(0)))));
1694 | return true1;
1695 | }
1696 |
1697 | static void
1698 | free_ue_cache(snmp_ue_assoc_t **cache)
1699 | {
1700 | static snmp_ue_assoc_t *a, *nxt;
1701 |
1702 | for (a = *cache; a; a = nxt) {
1703 | nxt = a->next;
1704 | snmp_users_free_cb(a);
1705 | g_free(a);
1706 | }
1707 |
1708 | *cache = NULL((void*)0);
1709 | }
1710 |
1711 | #define CACHE_INSERT(c,a)if (c) { snmp_ue_assoc_t* t = c; c = a; c->next = t; } else { c = a; a->next = ((void*)0); } if (c) { snmp_ue_assoc_t* t = c; c = a; c->next = t; } else { c = a; a->next = NULL((void*)0); }
1712 |
1713 | static void
1714 | init_ue_cache(void)
1715 | {
1716 | unsigned i;
1717 |
1718 | for (i = 0; i < num_ueas; i++) {
1719 | snmp_ue_assoc_t* a = ue_dup(&(ueas[i]));
1720 |
1721 | if (a->engine.len) {
1722 | CACHE_INSERT(localized_ues,a)if (localized_ues) { snmp_ue_assoc_t* t = localized_ues; localized_ues = a; localized_ues->next = t; } else { localized_ues = a; a->next = ((void*)0); };
1723 |
1724 | } else {
1725 | CACHE_INSERT(unlocalized_ues,a)if (unlocalized_ues) { snmp_ue_assoc_t* t = unlocalized_ues; unlocalized_ues = a; unlocalized_ues->next = t; } else { unlocalized_ues = a; a->next = ((void*)0); };
1726 | }
1727 |
1728 | }
1729 | }
1730 |
1731 | static void
1732 | cleanup_ue_cache(void)
1733 | {
1734 | free_ue_cache(&localized_ues);
1735 | free_ue_cache(&unlocalized_ues);
1736 | }
1737 |
1738 | /* Called when the user applies changes to UAT preferences. */
1739 | static void
1740 | renew_ue_cache(void)
1741 | {
1742 | cleanup_ue_cache();
1743 | init_ue_cache();
1744 | }
1745 |
1746 |
1747 | static snmp_ue_assoc_t*
1748 | localize_ue( snmp_ue_assoc_t* o, const uint8_t* engine, unsigned engine_len )
1749 | {
1750 | snmp_ue_assoc_t* n = (snmp_ue_assoc_t*)g_memdup2(o,sizeof(snmp_ue_assoc_t));
1751 |
1752 | n->user.userName.data = (uint8_t*)g_memdup2(o->user.userName.data,o->user.userName.len);
1753 | n->user.authModel = o->user.authModel;
1754 | n->user.authPassword.data = (uint8_t*)g_memdup2(o->user.authPassword.data,o->user.authPassword.len);
1755 | n->user.authPassword.len = o->user.authPassword.len;
1756 | n->user.privPassword.data = (uint8_t*)g_memdup2(o->user.privPassword.data,o->user.privPassword.len);
1757 | n->user.privPassword.len = o->user.privPassword.len;
1758 | n->user.authKey.data = (uint8_t*)g_memdup2(o->user.authKey.data,o->user.authKey.len);
1759 | n->user.privKey.data = (uint8_t*)g_memdup2(o->user.privKey.data,o->user.privKey.len);
1760 | n->engine.data = (uint8_t*)g_memdup2(engine,engine_len);
1761 | n->engine.len = engine_len;
1762 | n->priv_proto = o->priv_proto;
1763 |
1764 | set_ue_keys(n);
16 | ← | Calling 'set_ue_keys' | →
1765 |
1766 | return n;
1767 | }
1768 |
1769 |
1770 | #define localized_match(a,u,ul,e,el)( a->user.userName.len == ul && a->engine.len == el && memcmp( a->user.userName.data, u, ul ) == 0 && memcmp( a->engine.data, e, el ) == 0 ) \
1771 | ( a->user.userName.len == ul \
1772 | && a->engine.len == el \
1773 | && memcmp( a->user.userName.data, u, ul ) == 0 \
1774 | && memcmp( a->engine.data, e, el ) == 0 )
1775 |
1776 | #define unlocalized_match(a,u,l)( a->user.userName.len == l && memcmp( a->user. userName.data, u, l) == 0 ) \
1777 | ( a->user.userName.len == l && memcmp( a->user.userName.data, u, l) == 0 )
1778 |
1779 | static snmp_ue_assoc_t*
1780 | get_user_assoc(tvbuff_t* engine_tvb, tvbuff_t* user_tvb, packet_info *pinfo)
1781 | {
1782 | static snmp_ue_assoc_t* a;
1783 | unsigned given_username_len;
1784 | uint8_t* given_username;
1785 | unsigned given_engine_len = 0;
1786 | uint8_t* given_engine = NULL((void*)0);
1787 |
1788 | if ( ! (localized_ues || unlocalized_ues ) ) return NULL((void*)0);
3 | ← | Assuming 'localized_ues' is non-null | →
1789 |
1790 | if (! ( user_tvb && engine_tvb ) ) return NULL((void*)0);
4 | ← | Assuming 'user_tvb' is non-null | →
5 | ← | Assuming the condition is false | →
6 | ← | Taking false branch | →
1791 |
1792 | given_username_len = tvb_captured_length(user_tvb);
1793 | given_engine_len = tvb_captured_length(engine_tvb);
1794 | if (! ( given_engine_len && given_username_len ) ) return NULL((void*)0);
7 | ← | Assuming 'given_engine_len' is not equal to 0 | →
8 | ← | Assuming the condition is false | →
9 | ← | Taking false branch | →
1795 | given_username = (uint8_t*)tvb_memdup(pinfo->pool, user_tvb, 0, given_username_len);
1796 | given_engine = (uint8_t*)tvb_memdup(pinfo->pool, engine_tvb, 0, given_engine_len);
1797 |
1798 | for (a = localized_ues; a; a = a->next) {
10 | ← | Loop condition is false. Execution continues on line 1804 | →
1799 | if ( localized_match(a, given_username, given_username_len, given_engine, given_engine_len)( a->user.userName.len == given_username_len && a-> engine.len == given_engine_len && memcmp( a->user. userName.data, given_username, given_username_len ) == 0 && memcmp( a->engine.data, given_engine, given_engine_len ) == 0 ) ) {
1800 | return a;
1801 | }
1802 | }
1803 |
1804 | for (a = unlocalized_ues; a; a = a->next) {
1805 | if ( unlocalized_match(a, given_username, given_username_len)( a->user.userName.len == given_username_len && memcmp ( a->user.userName.data, given_username, given_username_len ) == 0 ) ) {
11 | ← | Loop condition is true. Entering loop body | →
12 | ← | Assuming 'given_username_len' is equal to field 'len' | →
13 | ← | Assuming the condition is true | →
14 | ← | Taking true branch | →
1806 | snmp_ue_assoc_t* n = localize_ue( a, given_engine, given_engine_len );
15 | ← | Calling 'localize_ue' | →
1807 | CACHE_INSERT(localized_ues,n)if (localized_ues) { snmp_ue_assoc_t* t = localized_ues; localized_ues = n; localized_ues->next = t; } else { localized_ues = n; n->next = ((void*)0); };
1808 | return n;
1809 | }
1810 | }
1811 |
1812 | return NULL((void*)0);
1813 | }
1814 |
1815 | static bool_Bool
1816 | snmp_usm_auth(const packet_info *pinfo, const snmp_usm_auth_model_t model, snmp_usm_params_t* p, uint8_t** calc_auth_p,
1817 | unsigned* calc_auth_len_p, char const** error)
1818 | {
1819 | int msg_len;
1820 | uint8_t* msg;
1821 | unsigned auth_len;
1822 | uint8_t* auth;
1823 | uint8_t* key;
1824 | unsigned key_len;
1825 | uint8_t *calc_auth;
1826 | unsigned start;
1827 | unsigned end;
1828 | unsigned i;
1829 |
1830 | if (!p->auth_tvb) {
1831 | *error = "No Authenticator";
1832 | return false0;
1833 | }
1834 |
1835 | key = p->user_assoc->user.authKey.data;
1836 | key_len = p->user_assoc->user.authKey.len;
1837 |
1838 | if (! key ) {
1839 | *error = "User has no authKey";
1840 | return false0;
1841 | }
1842 |
1843 | auth_len = tvb_captured_length(p->auth_tvb);
1844 |
1845 | if (auth_len != auth_tag_len[model]) {
1846 | *error = "Authenticator length wrong";
1847 | return false0;
1848 | }
1849 |
1850 | msg_len = tvb_captured_length(p->msg_tvb);
1851 | if (msg_len <= 0) {
1852 | *error = "Not enough data remaining";
1853 | return false0;
1854 | }
1855 | msg = (uint8_t*)tvb_memdup(pinfo->pool,p->msg_tvb,0,msg_len);
1856 |
1857 | auth = (uint8_t*)tvb_memdup(pinfo->pool,p->auth_tvb,0,auth_len);
1858 |
1859 | start = p->auth_offset - p->start_offset;
1860 | end = start + auth_len;
1861 |
1862 | /* fill the authenticator with zeros */
1863 | for ( i = start ; i < end ; i++ ) {
1864 | msg[i] = '\0';
1865 | }
1866 |
1867 | calc_auth = (uint8_t*)wmem_alloc(pinfo->pool, auth_hash_len[model]);
1868 |
1869 | if (ws_hmac_buffer(auth_hash_algo[model], calc_auth, msg, msg_len, key, key_len)) {
1870 | return false0;
1871 | }
1872 |
1873 | if (calc_auth_p) *calc_auth_p = calc_auth;
1874 | if (calc_auth_len_p) *calc_auth_len_p = auth_len;
1875 |
1876 | return ( memcmp(auth,calc_auth,auth_len) != 0 ) ? false0 : true1;
1877 | }
1878 |
1879 | static tvbuff_t*
1880 | snmp_usm_priv_des(snmp_usm_params_t* p, tvbuff_t* encryptedData, packet_info *pinfo, char const** error)
1881 | {
1882 | gcry_error_t err;
1883 | gcry_cipher_hd_t hd = NULL((void*)0);
1884 |
1885 | uint8_t* cleartext;
1886 | uint8_t* des_key = p->user_assoc->user.privKey.data; /* first 8 bytes */
1887 | uint8_t* pre_iv = &(p->user_assoc->user.privKey.data[8]); /* last 8 bytes */
1888 | uint8_t* salt;
1889 | int salt_len;
1890 | int cryptgrm_len;
1891 | uint8_t* cryptgrm;
1892 | tvbuff_t* clear_tvb;
1893 | uint8_t iv[8];
1894 | unsigned i;
1895 |
1896 |
1897 | salt_len = tvb_captured_length(p->priv_tvb);
1898 |
1899 | if (salt_len != 8) {
1900 | *error = "decryptionError: msgPrivacyParameters length != 8";
1901 | return NULL((void*)0);
1902 | }
1903 |
1904 | salt = (uint8_t*)tvb_memdup(pinfo->pool,p->priv_tvb,0,salt_len);
1905 |
1906 | /*
1907 | The resulting "salt" is XOR-ed with the pre-IV to obtain the IV.
1908 | */
1909 | for (i=0; i<8; i++) {
1910 | iv[i] = pre_iv[i] ^ salt[i];
1911 | }
1912 |
1913 | cryptgrm_len = tvb_captured_length(encryptedData);
1914 |
1915 | if ((cryptgrm_len <= 0) || (cryptgrm_len % 8)) {
1916 | *error = "decryptionError: the length of the encrypted data is not a multiple of 8 octets";
1917 | return NULL((void*)0);
1918 | }
1919 |
1920 | cryptgrm = (uint8_t*)tvb_memdup(pinfo->pool, encryptedData, 0, cryptgrm_len);
1921 |
1922 | cleartext = (uint8_t*)wmem_alloc(pinfo->pool, cryptgrm_len);
1923 |
1924 | err = gcry_cipher_open(&hd, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_CBC, 0);
1925 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1926 |
1927 | err = gcry_cipher_setiv(hd, iv, 8);
1928 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1929 |
1930 | err = gcry_cipher_setkey(hd,des_key,8);
1931 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1932 |
1933 | err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1934 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1935 |
1936 | gcry_cipher_close(hd);
1937 |
1938 | clear_tvb = tvb_new_child_real_data(encryptedData, cleartext, cryptgrm_len, cryptgrm_len);
1939 |
1940 | return clear_tvb;
1941 |
1942 | on_gcry_error:
1943 | *error = (const char *)gcry_strerror(err);
1944 | if (hd) gcry_cipher_close(hd);
1945 | return NULL((void*)0);
1946 | }
1947 |
1948 | static tvbuff_t*
1949 | snmp_usm_priv_aes_common(snmp_usm_params_t* p, tvbuff_t* encryptedData, packet_info *pinfo, char const** error, int algo)
1950 | {
1951 | gcry_error_t err;
1952 | gcry_cipher_hd_t hd = NULL((void*)0);
1953 |
1954 | uint8_t* cleartext;
1955 | uint8_t* aes_key = p->user_assoc->user.privKey.data;
1956 | int aes_key_len = p->user_assoc->user.privKey.len;
1957 | uint8_t iv[16];
1958 | int priv_len;
1959 | int cryptgrm_len;
1960 | uint8_t* cryptgrm;
1961 | tvbuff_t* clear_tvb;
1962 |
1963 | priv_len = tvb_captured_length(p->priv_tvb);
1964 |
1965 | if (priv_len != 8) {
1966 | *error = "decryptionError: msgPrivacyParameters length != 8";
1967 | return NULL((void*)0);
1968 | }
1969 |
1970 | iv[0] = (p->boots & 0xff000000) >> 24;
1971 | iv[1] = (p->boots & 0x00ff0000) >> 16;
1972 | iv[2] = (p->boots & 0x0000ff00) >> 8;
1973 | iv[3] = (p->boots & 0x000000ff);
1974 | iv[4] = (p->snmp_time & 0xff000000) >> 24;
1975 | iv[5] = (p->snmp_time & 0x00ff0000) >> 16;
1976 | iv[6] = (p->snmp_time & 0x0000ff00) >> 8;
1977 | iv[7] = (p->snmp_time & 0x000000ff);
1978 | tvb_memcpy(p->priv_tvb,&(iv[8]),0,8);
1979 |
1980 | cryptgrm_len = tvb_captured_length(encryptedData);
1981 | if (cryptgrm_len <= 0) {
1982 | *error = "Not enough data remaining";
1983 | return NULL((void*)0);
1984 | }
1985 | cryptgrm = (uint8_t*)tvb_memdup(pinfo->pool, encryptedData, 0, cryptgrm_len);
1986 |
1987 | cleartext = (uint8_t*)wmem_alloc(pinfo->pool, cryptgrm_len);
1988 |
1989 | err = gcry_cipher_open(&hd, algo, GCRY_CIPHER_MODE_CFB, 0);
1990 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1991 |
1992 | err = gcry_cipher_setiv(hd, iv, 16);
1993 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1994 |
1995 | err = gcry_cipher_setkey(hd,aes_key,aes_key_len);
1996 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
1997 |
1998 | err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
1999 | if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
2000 |
2001 | gcry_cipher_close(hd);
2002 |
2003 | clear_tvb = tvb_new_child_real_data(encryptedData, cleartext, cryptgrm_len, cryptgrm_len);
2004 |
2005 | return clear_tvb;
2006 |
2007 | on_gcry_error:
2008 | *error = (const char *)gcry_strerror(err);
2009 | if (hd) gcry_cipher_close(hd);
2010 | return NULL((void*)0);
2011 | }
2012 |
2013 | static tvbuff_t*
2014 | snmp_usm_priv_aes128(snmp_usm_params_t* p, tvbuff_t* encryptedData, packet_info *pinfo, char const** error)
2015 | {
2016 | return snmp_usm_priv_aes_common(p, encryptedData, pinfo, error, GCRY_CIPHER_AES);
2017 | }
2018 |
2019 | static tvbuff_t*
2020 | snmp_usm_priv_aes192(snmp_usm_params_t* p, tvbuff_t* encryptedData, packet_info *pinfo, char const** error)
2021 | {
2022 | return snmp_usm_priv_aes_common(p, encryptedData, pinfo, error, GCRY_CIPHER_AES192);
2023 | }
2024 |
2025 | static tvbuff_t*
2026 | snmp_usm_priv_aes256(snmp_usm_params_t* p, tvbuff_t* encryptedData, packet_info *pinfo, char const** error)
2027 | {
2028 | return snmp_usm_priv_aes_common(p, encryptedData, pinfo, error, GCRY_CIPHER_AES256);
2029 | }
2030 |
2031 | static bool_Bool
2032 | check_ScopedPdu(tvbuff_t* tvb)
2033 | {
2034 | int offset;
2035 | int8_t ber_class;
2036 | bool_Bool pc;
2037 | int32_t tag;
2038 | int hoffset, eoffset;
2039 | uint32_t len;
2040 |
2041 | offset = get_ber_identifier(tvb, 0, &ber_class, &pc, &tag);
2042 | offset = get_ber_length(tvb, offset, NULL((void*)0), NULL((void*)0));
2043 |
2044 | if ( ! (((ber_class!=BER_CLASS_APP1) && (ber_class!=BER_CLASS_PRI3) )
2045 | && ( (!pc) || (ber_class!=BER_CLASS_UNI0) || (tag!=BER_UNI_TAG_ENUMERATED10) )
2046 | )) return false0;
2047 |
2048 | if((tvb_get_uint8(tvb, offset)==0)&&(tvb_get_uint8(tvb, offset+1)==0))
2049 | return true1;
2050 |
2051 | hoffset = offset;
2052 |
2053 | offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
2054 | offset = get_ber_length(tvb, offset, &len, NULL((void*)0));
2055 | eoffset = offset + len;
2056 |
2057 | if (eoffset <= hoffset) return false0;
2058 |
2059 | if ((ber_class!=BER_CLASS_APP1)&&(ber_class!=BER_CLASS_PRI3))
2060 | if( (ber_class!=BER_CLASS_UNI0)
2061 | ||((tag<BER_UNI_TAG_NumericString18)&&(tag!=BER_UNI_TAG_OCTETSTRING4)&&(tag!=BER_UNI_TAG_UTF8String12)) )
2062 | return false0;
2063 |
2064 | return true1;
2065 |
2066 | }
2067 |
2068 |
2069 |
2070 |
2071 | static unsigned
2072 | dissect_snmp_EnterpriseOID(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2073 | const char* name;
2074 |
2075 | offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &enterprise_oid);
2076 |
2077 |
2078 | if (display_oid && enterprise_oid) {
2079 | name = oid_resolved_from_string(actx->pinfo->pool, enterprise_oid);
2080 | if (name) {
2081 | col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", name);
2082 | }
2083 | }
2084 |
2085 |
2086 | return offset;
2087 | }
2088 |
2089 |
2090 |
2091 | static unsigned
2092 | dissect_snmp_OCTET_STRING_SIZE_4(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2093 | offset = dissect_ber_constrained_octet_string(implicit_tag, actx, tree, tvb, offset,
2094 | 4, 4, hf_index, NULL((void*)0));
2095 |
2096 | return offset;
2097 | }
2098 |
2099 |
2100 |
2101 | static unsigned
2102 | dissect_snmp_NetworkAddress(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2103 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2104 | hf_index, BER_CLASS_APP1, 0, true1, dissect_snmp_OCTET_STRING_SIZE_4);
2105 |
2106 | return offset;
2107 | }
2108 |
2109 |
2110 |
2111 | static unsigned
2112 | dissect_snmp_INTEGER_0_4294967295(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2113 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2114 | 0U, 4294967295U, hf_index, NULL((void*)0));
2115 |
2116 | return offset;
2117 | }
2118 |
2119 |
2120 |
2121 | static unsigned
2122 | dissect_snmp_TimeTicks(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2123 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2124 | hf_index, BER_CLASS_APP1, 3, true1, dissect_snmp_INTEGER_0_4294967295);
2125 |
2126 | return offset;
2127 | }
2128 |
2129 |
2130 |
2131 | static unsigned
2132 | dissect_snmp_Integer32(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2133 |
2134 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2135 | INT32_MIN(-2147483647-1), 2147483647U, hf_index, &RequestID);
2136 |
2137 |
2138 |
2139 | return offset;
2140 | }
2141 |
2142 |
2143 |
2144 | static unsigned
2145 | dissect_snmp_ObjectName(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2146 | offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL((void*)0));
2147 |
2148 | return offset;
2149 | }
2150 |
2151 |
2152 | static const value_string snmp_Version_vals[] = {
2153 | { 0, "version-1" },
2154 | { 1, "v2c" },
2155 | { 2, "v2u" },
2156 | { 3, "snmpv3" },
2157 | { 0, NULL((void*)0) }
2158 | };
2159 |
2160 |
2161 | static unsigned
2162 | dissect_snmp_Version(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2163 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2164 | &snmp_version);
2165 |
2166 | return offset;
2167 | }
2168 |
2169 |
2170 |
2171 | static unsigned
2172 | dissect_snmp_Community(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2173 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2174 | NULL((void*)0));
2175 |
2176 | return offset;
2177 | }
2178 |
2179 |
2180 |
2181 | static unsigned
2182 | dissect_snmp_T_request_id(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2183 |
2184 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2185 | &RequestID);
2186 |
2187 |
2188 |
2189 | return offset;
2190 | }
2191 |
2192 |
2193 | static const value_string snmp_T_error_status_vals[] = {
2194 | { 0, "noError" },
2195 | { 1, "tooBig" },
2196 | { 2, "noSuchName" },
2197 | { 3, "badValue" },
2198 | { 4, "readOnly" },
2199 | { 5, "genErr" },
2200 | { 6, "noAccess" },
2201 | { 7, "wrongType" },
2202 | { 8, "wrongLength" },
2203 | { 9, "wrongEncoding" },
2204 | { 10, "wrongValue" },
2205 | { 11, "noCreation" },
2206 | { 12, "inconsistentValue" },
2207 | { 13, "resourceUnavailable" },
2208 | { 14, "commitFailed" },
2209 | { 15, "undoFailed" },
2210 | { 16, "authorizationError" },
2211 | { 17, "notWritable" },
2212 | { 18, "inconsistentName" },
2213 | { 0, NULL((void*)0) }
2214 | };
2215 |
2216 |
2217 | static unsigned
2218 | dissect_snmp_T_error_status(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2219 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2220 | NULL((void*)0));
2221 |
2222 | return offset;
2223 | }
2224 |
2225 |
2226 |
2227 | static unsigned
2228 | dissect_snmp_INTEGER(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2229 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2230 | NULL((void*)0));
2231 |
2232 | return offset;
2233 | }
2234 |
2235 |
2236 |
2237 | static const ber_sequence_t VarBindList_sequence_of[1] = {
2238 | { &hf_snmp_VarBindList_item, BER_CLASS_UNI0, BER_UNI_TAG_SEQUENCE16, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_VarBind },
2239 | };
2240 |
2241 | static unsigned
2242 | dissect_snmp_VarBindList(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2243 | offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
2244 | VarBindList_sequence_of, hf_index, ett_snmp_VarBindList);
2245 |
2246 | return offset;
2247 | }
2248 |
2249 |
2250 | static const ber_sequence_t PDU_sequence[] = {
2251 | { &hf_snmp_request_id , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_request_id },
2252 | { &hf_snmp_error_status , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_error_status },
2253 | { &hf_snmp_error_index , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_INTEGER },
2254 | { &hf_snmp_variable_bindings, BER_CLASS_UNI0, BER_UNI_TAG_SEQUENCE16, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_VarBindList },
2255 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2256 | };
2257 |
2258 | static unsigned
2259 | dissect_snmp_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2260 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2261 | PDU_sequence, hf_index, ett_snmp_PDU);
2262 |
2263 | return offset;
2264 | }
2265 |
2266 |
2267 |
2268 | static unsigned
2269 | dissect_snmp_GetRequest_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2270 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2271 | hf_index, BER_CLASS_CON2, 0, true1, dissect_snmp_PDU);
2272 |
2273 | return offset;
2274 | }
2275 |
2276 |
2277 |
2278 | static unsigned
2279 | dissect_snmp_GetNextRequest_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2280 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2281 | hf_index, BER_CLASS_CON2, 1, true1, dissect_snmp_PDU);
2282 |
2283 | return offset;
2284 | }
2285 |
2286 |
2287 |
2288 | static unsigned
2289 | dissect_snmp_GetResponse_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2290 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2291 | hf_index, BER_CLASS_CON2, 2, true1, dissect_snmp_PDU);
2292 |
2293 | return offset;
2294 | }
2295 |
2296 |
2297 |
2298 | static unsigned
2299 | dissect_snmp_SetRequest_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2300 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2301 | hf_index, BER_CLASS_CON2, 3, true1, dissect_snmp_PDU);
2302 |
2303 | return offset;
2304 | }
2305 |
2306 |
2307 | static const value_string snmp_GenericTrap_vals[] = {
2308 | { 0, "coldStart" },
2309 | { 1, "warmStart" },
2310 | { 2, "linkDown" },
2311 | { 3, "linkUp" },
2312 | { 4, "authenticationFailure" },
2313 | { 5, "egpNeighborLoss" },
2314 | { 6, "enterpriseSpecific" },
2315 | { 0, NULL((void*)0) }
2316 | };
2317 |
2318 |
2319 | static unsigned
2320 | dissect_snmp_GenericTrap(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2321 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2322 | &generic_trap);
2323 |
2324 | return offset;
2325 | }
2326 |
2327 |
2328 |
2329 | static unsigned
2330 | dissect_snmp_SpecificTrap(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2331 | unsigned specific_trap;
2332 |
2333 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2334 | &specific_trap);
2335 |
2336 |
2337 | if (generic_trap == 6) { /* enterprise specific */
2338 | const char *specific_str = snmp_lookup_specific_trap (specific_trap);
2339 | if (specific_str) {
2340 | proto_item_append_text(actx->created_item, " (%s)", specific_str);
2341 | }
2342 | }
2343 |
2344 | return offset;
2345 | }
2346 |
2347 |
2348 | static const ber_sequence_t Trap_PDU_U_sequence[] = {
2349 | { &hf_snmp_enterprise , BER_CLASS_UNI0, BER_UNI_TAG_OID6, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_EnterpriseOID },
2350 | { &hf_snmp_agent_addr , BER_CLASS_APP1, 0, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_NetworkAddress },
2351 | { &hf_snmp_generic_trap , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_GenericTrap },
2352 | { &hf_snmp_specific_trap , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_SpecificTrap },
2353 | { &hf_snmp_time_stamp , BER_CLASS_APP1, 3, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_TimeTicks },
2354 | { &hf_snmp_variable_bindings, BER_CLASS_UNI0, BER_UNI_TAG_SEQUENCE16, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_VarBindList },
2355 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2356 | };
2357 |
2358 | static unsigned
2359 | dissect_snmp_Trap_PDU_U(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2360 | generic_trap = 0;
2361 | enterprise_oid = NULL((void*)0);
2362 |
2363 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2364 | Trap_PDU_U_sequence, hf_index, ett_snmp_Trap_PDU_U);
2365 |
2366 |
2367 | if (snmp_version != 0) {
2368 | expert_add_info(actx->pinfo, tree, &ei_snmp_trap_pdu_obsolete);
2369 | }
2370 |
2371 |
2372 | return offset;
2373 | }
2374 |
2375 |
2376 |
2377 | static unsigned
2378 | dissect_snmp_Trap_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2379 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2380 | hf_index, BER_CLASS_CON2, 4, true1, dissect_snmp_Trap_PDU_U);
2381 |
2382 | return offset;
2383 | }
2384 |
2385 |
2386 |
2387 | static unsigned
2388 | dissect_snmp_INTEGER_0_2147483647(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2389 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2390 | 0U, 2147483647U, hf_index, NULL((void*)0));
2391 |
2392 | return offset;
2393 | }
2394 |
2395 |
2396 | static const ber_sequence_t BulkPDU_sequence[] = {
2397 | { &hf_snmp_request_id_01 , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Integer32 },
2398 | { &hf_snmp_non_repeaters , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_INTEGER_0_2147483647 },
2399 | { &hf_snmp_max_repetitions, BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_INTEGER_0_2147483647 },
2400 | { &hf_snmp_variable_bindings, BER_CLASS_UNI0, BER_UNI_TAG_SEQUENCE16, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_VarBindList },
2401 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2402 | };
2403 |
2404 | static unsigned
2405 | dissect_snmp_BulkPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2406 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2407 | BulkPDU_sequence, hf_index, ett_snmp_BulkPDU);
2408 |
2409 | return offset;
2410 | }
2411 |
2412 |
2413 |
2414 | static unsigned
2415 | dissect_snmp_GetBulkRequest_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2416 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2417 | hf_index, BER_CLASS_CON2, 5, true1, dissect_snmp_BulkPDU);
2418 |
2419 | return offset;
2420 | }
2421 |
2422 |
2423 |
2424 | static unsigned
2425 | dissect_snmp_InformRequest_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2426 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2427 | hf_index, BER_CLASS_CON2, 6, true1, dissect_snmp_PDU);
2428 |
2429 | return offset;
2430 | }
2431 |
2432 |
2433 |
2434 | static unsigned
2435 | dissect_snmp_SNMPv2_Trap_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2436 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2437 | hf_index, BER_CLASS_CON2, 7, true1, dissect_snmp_PDU);
2438 |
2439 | return offset;
2440 | }
2441 |
2442 |
2443 |
2444 | static unsigned
2445 | dissect_snmp_Report_PDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2446 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2447 | hf_index, BER_CLASS_CON2, 8, true1, dissect_snmp_PDU);
2448 |
2449 | return offset;
2450 | }
2451 |
2452 |
2453 | static const value_string snmp_PDUs_vals[] = {
2454 | { 0, "get-request" },
2455 | { 1, "get-next-request" },
2456 | { 2, "get-response" },
2457 | { 3, "set-request" },
2458 | { 4, "trap" },
2459 | { 5, "getBulkRequest" },
2460 | { 6, "informRequest" },
2461 | { 7, "snmpV2-trap" },
2462 | { 8, "report" },
2463 | { 0, NULL((void*)0) }
2464 | };
2465 |
2466 | static const ber_choice_t PDUs_choice[] = {
2467 | { 0, &hf_snmp_get_request , BER_CLASS_CON2, 0, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_GetRequest_PDU },
2468 | { 1, &hf_snmp_get_next_request, BER_CLASS_CON2, 1, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_GetNextRequest_PDU },
2469 | { 2, &hf_snmp_get_response , BER_CLASS_CON2, 2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_GetResponse_PDU },
2470 | { 3, &hf_snmp_set_request , BER_CLASS_CON2, 3, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_SetRequest_PDU },
2471 | { 4, &hf_snmp_trap , BER_CLASS_CON2, 4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Trap_PDU },
2472 | { 5, &hf_snmp_getBulkRequest , BER_CLASS_CON2, 5, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_GetBulkRequest_PDU },
2473 | { 6, &hf_snmp_informRequest , BER_CLASS_CON2, 6, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_InformRequest_PDU },
2474 | { 7, &hf_snmp_snmpV2_trap , BER_CLASS_CON2, 7, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_SNMPv2_Trap_PDU },
2475 | { 8, &hf_snmp_report , BER_CLASS_CON2, 8, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Report_PDU },
2476 | { 0, NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2477 | };
2478 |
2479 | static unsigned
2480 | dissect_snmp_PDUs(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2481 | int pdu_type=-1;
2482 |
2483 | snmp_request_response_t *srrp;
2484 | snmp_conv_info_t *snmp_info = (snmp_conv_info_t *)actx->private_data;
2485 |
2486 | col_clear(actx->pinfo->cinfo, COL_INFO);
2487 |
2488 | offset = dissect_ber_choice(actx, tree, tvb, offset,
2489 | PDUs_choice, hf_index, ett_snmp_PDUs,
2490 | &pdu_type);
2491 |
2492 | if( (pdu_type!=-1) && snmp_PDUs_vals[pdu_type].strptr ){
2493 | col_prepend_fstr(actx->pinfo->cinfo, COL_INFO, "%s", snmp_PDUs_vals[pdu_type].strptr);
2494 |
2495 | /* pdu_type is the index, not the tag so convert it to the tag value */
2496 | pdu_type = snmp_PDUs_vals[pdu_type].value;
2497 |
2498 | srrp=snmp_match_request_response(tvb, actx->pinfo, tree, RequestID, pdu_type, snmp_info);
2499 | if (srrp) {
2500 | tap_queue_packet(snmp_tap, actx->pinfo, srrp);
2501 | }
2502 | }
2503 |
2504 |
2505 |
2506 | return offset;
2507 | }
2508 |
2509 |
2510 | static const ber_sequence_t Message_sequence[] = {
2511 | { &hf_snmp_version , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Version },
2512 | { &hf_snmp_community , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Community },
2513 | { &hf_snmp_data , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004|BER_FLAGS_NOTCHKTAG0x00000008, dissect_snmp_PDUs },
2514 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2515 | };
2516 |
2517 | static unsigned
2518 | dissect_snmp_Message(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2519 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2520 | Message_sequence, hf_index, ett_snmp_Message);
2521 |
2522 | return offset;
2523 | }
2524 |
2525 |
2526 |
2527 | static unsigned
2528 | dissect_snmp_OCTET_STRING(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2529 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2530 | NULL((void*)0));
2531 |
2532 | return offset;
2533 | }
2534 |
2535 |
2536 | static const value_string snmp_T_datav2u_vals[] = {
2537 | { 0, "plaintext" },
2538 | { 1, "encrypted" },
2539 | { 0, NULL((void*)0) }
2540 | };
2541 |
2542 | static const ber_choice_t T_datav2u_choice[] = {
2543 | { 0, &hf_snmp_v2u_plaintext , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_PDUs },
2544 | { 1, &hf_snmp_encrypted , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_OCTET_STRING },
2545 | { 0, NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2546 | };
2547 |
2548 | static unsigned
2549 | dissect_snmp_T_datav2u(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2550 | offset = dissect_ber_choice(actx, tree, tvb, offset,
2551 | T_datav2u_choice, hf_index, ett_snmp_T_datav2u,
2552 | NULL((void*)0));
2553 |
2554 | return offset;
2555 | }
2556 |
2557 |
2558 | static const ber_sequence_t Messagev2u_sequence[] = {
2559 | { &hf_snmp_version , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Version },
2560 | { &hf_snmp_parameters , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_OCTET_STRING },
2561 | { &hf_snmp_datav2u , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004|BER_FLAGS_NOTCHKTAG0x00000008, dissect_snmp_T_datav2u },
2562 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2563 | };
2564 |
2565 | static unsigned
2566 | dissect_snmp_Messagev2u(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2567 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2568 | Messagev2u_sequence, hf_index, ett_snmp_Messagev2u);
2569 |
2570 | return offset;
2571 | }
2572 |
2573 |
2574 |
2575 | static unsigned
2576 | dissect_snmp_SnmpEngineID(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2577 | tvbuff_t* param_tvb = NULL((void*)0);
2578 |
2579 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &param_tvb);
2580 | if (param_tvb) {
2581 | proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
2582 | dissect_snmp_engineid(engine_tree, actx->pinfo, param_tvb, 0, tvb_reported_length_remaining(param_tvb,0));
2583 | }
2584 |
2585 |
2586 | return offset;
2587 | }
2588 |
2589 |
2590 |
2591 | static unsigned
2592 | dissect_snmp_T_msgAuthoritativeEngineID(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2593 |
2594 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &usm_p.engine_tvb);
2595 | if (usm_p.engine_tvb) {
2596 | proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
2597 | dissect_snmp_engineid(engine_tree, actx->pinfo, usm_p.engine_tvb, 0, tvb_reported_length_remaining(usm_p.engine_tvb,0));
2598 | }
2599 |
2600 |
2601 | return offset;
2602 | }
2603 |
2604 |
2605 |
2606 | static unsigned
2607 | dissect_snmp_T_msgAuthoritativeEngineBoots(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2608 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2609 | 0U, 2147483647U, hf_index, &usm_p.boots);
2610 |
2611 | return offset;
2612 | }
2613 |
2614 |
2615 |
2616 | static unsigned
2617 | dissect_snmp_T_msgAuthoritativeEngineTime(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2618 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2619 | 0U, 2147483647U, hf_index, &usm_p.snmp_time);
2620 |
2621 | return offset;
2622 | }
2623 |
2624 |
2625 |
2626 | static unsigned
2627 | dissect_snmp_T_msgUserName(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2628 | offset = dissect_ber_constrained_octet_string(implicit_tag, actx, tree, tvb, offset,
2629 | 1, 32, hf_index, &usm_p.user_tvb);
2630 |
2631 | return offset;
2632 | }
2633 |
2634 |
2635 |
2636 | static unsigned
2637 | dissect_snmp_T_msgAuthenticationParameters(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2638 | offset = dissect_ber_octet_string(false0, actx, tree, tvb, offset, hf_index, &usm_p.auth_tvb);
2639 | if (usm_p.auth_tvb) {
2640 | usm_p.auth_item = actx->created_item;
2641 | usm_p.auth_offset = tvb_offset_from_real_beginning(usm_p.auth_tvb);
2642 | }
2643 |
2644 | return offset;
2645 | }
2646 |
2647 |
2648 |
2649 | static unsigned
2650 | dissect_snmp_T_msgPrivacyParameters(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2651 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2652 | &usm_p.priv_tvb);
2653 |
2654 | return offset;
2655 | }
2656 |
2657 |
2658 | static const ber_sequence_t UsmSecurityParameters_sequence[] = {
2659 | { &hf_snmp_msgAuthoritativeEngineID, BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgAuthoritativeEngineID },
2660 | { &hf_snmp_msgAuthoritativeEngineBoots, BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgAuthoritativeEngineBoots },
2661 | { &hf_snmp_msgAuthoritativeEngineTime, BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgAuthoritativeEngineTime },
2662 | { &hf_snmp_msgUserName , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgUserName },
2663 | { &hf_snmp_msgAuthenticationParameters, BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgAuthenticationParameters },
2664 | { &hf_snmp_msgPrivacyParameters, BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgPrivacyParameters },
2665 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2666 | };
2667 |
2668 | static unsigned
2669 | dissect_snmp_UsmSecurityParameters(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2670 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2671 | UsmSecurityParameters_sequence, hf_index, ett_snmp_UsmSecurityParameters);
2672 |
2673 | return offset;
2674 | }
2675 |
2676 |
2677 |
2678 | static unsigned
2679 | dissect_snmp_INTEGER_484_2147483647(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2680 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2681 | 484U, 2147483647U, hf_index, NULL((void*)0));
2682 |
2683 | return offset;
2684 | }
2685 |
2686 |
2687 |
2688 | static unsigned
2689 | dissect_snmp_T_msgFlags(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2690 | tvbuff_t *parameter_tvb = NULL((void*)0);
2691 |
2692 | offset = dissect_ber_constrained_octet_string(implicit_tag, actx, tree, tvb, offset,
2693 | 1, 1, hf_index, &parameter_tvb);
2694 |
2695 | if (parameter_tvb){
2696 | uint8_t v3_flags = tvb_get_uint8(parameter_tvb, 0);
2697 | proto_tree* flags_tree = proto_item_add_subtree(actx->created_item,ett_msgFlags);
2698 |
2699 | proto_tree_add_item(flags_tree, hf_snmp_v3_flags_report, parameter_tvb, 0, 1, ENC_BIG_ENDIAN0x00000000);
2700 | proto_tree_add_item(flags_tree, hf_snmp_v3_flags_crypt, parameter_tvb, 0, 1, ENC_BIG_ENDIAN0x00000000);
2701 | proto_tree_add_item(flags_tree, hf_snmp_v3_flags_auth, parameter_tvb, 0, 1, ENC_BIG_ENDIAN0x00000000);
2702 |
2703 | usm_p.encrypted = v3_flags & TH_CRYPT0x02 ? true1 : false0;
2704 | usm_p.authenticated = v3_flags & TH_AUTH0x01 ? true1 : false0;
2705 | }
2706 |
2707 |
2708 |
2709 | return offset;
2710 | }
2711 |
2712 |
2713 |
2714 | static unsigned
2715 | dissect_snmp_T_msgSecurityModel(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2716 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
2717 | 1U, 2147483647U, hf_index, &MsgSecurityModel);
2718 |
2719 | return offset;
2720 | }
2721 |
2722 |
2723 | static const ber_sequence_t HeaderData_sequence[] = {
2724 | { &hf_snmp_msgID , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_INTEGER_0_2147483647 },
2725 | { &hf_snmp_msgMaxSize , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_INTEGER_484_2147483647 },
2726 | { &hf_snmp_msgFlags , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgFlags },
2727 | { &hf_snmp_msgSecurityModel, BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgSecurityModel },
2728 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2729 | };
2730 |
2731 | static unsigned
2732 | dissect_snmp_HeaderData(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2733 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2734 | HeaderData_sequence, hf_index, ett_snmp_HeaderData);
2735 |
2736 | return offset;
2737 | }
2738 |
2739 |
2740 |
2741 | static unsigned
2742 | dissect_snmp_T_msgSecurityParameters(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2743 |
2744 | switch(MsgSecurityModel){
1 | Control jumps to 'case 3:' at line 2745 | →
2745 | case SNMP_SEC_USM3: /* 3 */
2746 | offset = get_ber_identifier(tvb, offset, NULL((void*)0), NULL((void*)0), NULL((void*)0));
2747 | offset = get_ber_length(tvb, offset, NULL((void*)0), NULL((void*)0));
2748 | offset = dissect_snmp_UsmSecurityParameters(false0, tvb, offset, actx, tree, -1);
2749 | usm_p.user_assoc = get_user_assoc(usm_p.engine_tvb, usm_p.user_tvb, actx->pinfo);
2 | ← | Calling 'get_user_assoc' | →
2750 | break;
2751 | case SNMP_SEC_ANY0: /* 0 */
2752 | case SNMP_SEC_V11: /* 1 */
2753 | case SNMP_SEC_V2C2: /* 2 */
2754 | default:
2755 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2756 | NULL((void*)0));
2757 |
2758 | break;
2759 | }
2760 |
2761 |
2762 | return offset;
2763 | }
2764 |
2765 |
2766 | static const ber_sequence_t ScopedPDU_sequence[] = {
2767 | { &hf_snmp_contextEngineID, BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_SnmpEngineID },
2768 | { &hf_snmp_contextName , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_OCTET_STRING },
2769 | { &hf_snmp_data , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004|BER_FLAGS_NOTCHKTAG0x00000008, dissect_snmp_PDUs },
2770 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2771 | };
2772 |
2773 | static unsigned
2774 | dissect_snmp_ScopedPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2775 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2776 | ScopedPDU_sequence, hf_index, ett_snmp_ScopedPDU);
2777 |
2778 | return offset;
2779 | }
2780 |
2781 |
2782 |
2783 | static unsigned
2784 | dissect_snmp_T_encryptedPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2785 | tvbuff_t* crypt_tvb;
2786 | offset = dissect_ber_octet_string(false0, actx, tree, tvb, offset, hf_snmp_encryptedPDU, &crypt_tvb);
2787 |
2788 | if( usm_p.encrypted && crypt_tvb
2789 | && usm_p.user_assoc
2790 | && usm_p.user_assoc->user.privProtocol ) {
2791 |
2792 | const char* error = NULL((void*)0);
2793 | proto_tree* encryptedpdu_tree = proto_item_add_subtree(actx->created_item,ett_encryptedPDU);
2794 | tvbuff_t* cleartext_tvb = usm_p.user_assoc->user.privProtocol(&usm_p, crypt_tvb, actx->pinfo, &error );
2795 |
2796 | if (! cleartext_tvb) {
2797 | proto_tree_add_expert_format_remaining(encryptedpdu_tree, actx->pinfo, &ei_snmp_failed_decrypted_data_pdu,
2798 | crypt_tvb, 0, "Failed to decrypt encryptedPDU: %s", error);
2799 |
2800 | col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Failed to decrypt");
2801 |
2802 | return offset;
2803 | } else {
2804 | proto_item* decrypted_item;
2805 | proto_tree* decrypted_tree;
2806 |
2807 | if (! check_ScopedPdu(cleartext_tvb)) {
2808 | proto_tree_add_expert_remaining(encryptedpdu_tree, actx->pinfo, &ei_snmp_decrypted_data_bad_formatted, cleartext_tvb, 0);
2809 |
2810 | col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Decrypted data not formatted as expected");
2811 |
2812 | return offset;
2813 | }
2814 |
2815 |
2816 | add_new_data_source(actx->pinfo, cleartext_tvb, "Decrypted ScopedPDU");
2817 |
2818 | decrypted_item = proto_tree_add_item(encryptedpdu_tree, hf_snmp_decryptedPDU,cleartext_tvb,0,-1,ENC_NA0x00000000);
2819 | decrypted_tree = proto_item_add_subtree(decrypted_item,ett_decrypted);
2820 | dissect_snmp_ScopedPDU(false0, cleartext_tvb, 0, actx, decrypted_tree, -1);
2821 | }
2822 | } else {
2823 | col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: privKey Unknown");
2824 | }
2825 |
2826 |
2827 | return offset;
2828 | }
2829 |
2830 |
2831 | static const value_string snmp_ScopedPduData_vals[] = {
2832 | { 0, "plaintext" },
2833 | { 1, "encryptedPDU" },
2834 | { 0, NULL((void*)0) }
2835 | };
2836 |
2837 | static const ber_choice_t ScopedPduData_choice[] = {
2838 | { 0, &hf_snmp_plaintext , BER_CLASS_UNI0, BER_UNI_TAG_SEQUENCE16, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_ScopedPDU },
2839 | { 1, &hf_snmp_encryptedPDU , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_encryptedPDU },
2840 | { 0, NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2841 | };
2842 |
2843 | static unsigned
2844 | dissect_snmp_ScopedPduData(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2845 | offset = dissect_ber_choice(actx, tree, tvb, offset,
2846 | ScopedPduData_choice, hf_index, ett_snmp_ScopedPduData,
2847 | NULL((void*)0));
2848 |
2849 | return offset;
2850 | }
2851 |
2852 |
2853 | static const ber_sequence_t SNMPv3Message_sequence[] = {
2854 | { &hf_snmp_msgVersion , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_Version },
2855 | { &hf_snmp_msgGlobalData , BER_CLASS_UNI0, BER_UNI_TAG_SEQUENCE16, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_HeaderData },
2856 | { &hf_snmp_msgSecurityParameters, BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_msgSecurityParameters },
2857 | { &hf_snmp_msgData , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004|BER_FLAGS_NOTCHKTAG0x00000008, dissect_snmp_ScopedPduData },
2858 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2859 | };
2860 |
2861 | static unsigned
2862 | dissect_snmp_SNMPv3Message(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2863 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2864 | SNMPv3Message_sequence, hf_index, ett_snmp_SNMPv3Message);
2865 |
2866 |
2867 | if( usm_p.authenticated
2868 | && usm_p.user_assoc ) {
2869 | const char* error = NULL((void*)0);
2870 | proto_item* authen_item;
2871 | proto_tree* authen_tree = proto_item_add_subtree(usm_p.auth_item,ett_authParameters);
2872 | uint8_t* calc_auth = NULL((void*)0);
2873 | unsigned calc_auth_len = 0;
2874 |
2875 | usm_p.authOK = snmp_usm_auth(actx->pinfo, usm_p.user_assoc->user.authModel, &usm_p, &calc_auth, &calc_auth_len, &error );
2876 |
2877 | if (error) {
2878 | expert_add_info_format( actx->pinfo, usm_p.auth_item, &ei_snmp_verify_authentication_error, "Error while verifying Message authenticity: %s", error );
2879 | } else {
2880 | expert_field* expert;
2881 |
2882 | authen_item = proto_tree_add_boolean(authen_tree, hf_snmp_msgAuthentication, tvb, 0, 0, usm_p.authOK);
2883 | proto_item_set_generated(authen_item);
2884 |
2885 | if (usm_p.authOK) {
2886 | expert = &ei_snmp_authentication_ok;
2887 | } else {
2888 | const char* calc_auth_str = bytes_to_str_punct(actx->pinfo->pool, calc_auth,calc_auth_len,' ')bytes_to_str_punct_maxlen(actx->pinfo->pool, calc_auth, calc_auth_len, ' ', 24);
2889 | proto_item_append_text(authen_item, " calculated = %s", calc_auth_str);
2890 | expert = &ei_snmp_authentication_error;
2891 | }
2892 |
2893 | expert_add_info( actx->pinfo, authen_item, expert);
2894 | }
2895 | }
2896 |
2897 | return offset;
2898 | }
2899 |
2900 |
2901 | static const value_string snmp_T_smux_version_vals[] = {
2902 | { 0, "version-1" },
2903 | { 0, NULL((void*)0) }
2904 | };
2905 |
2906 |
2907 | static unsigned
2908 | dissect_snmp_T_smux_version(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2909 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2910 | NULL((void*)0));
2911 |
2912 | return offset;
2913 | }
2914 |
2915 |
2916 |
2917 | static unsigned
2918 | dissect_snmp_OBJECT_IDENTIFIER(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2919 | offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL((void*)0));
2920 |
2921 | return offset;
2922 | }
2923 |
2924 |
2925 |
2926 | static unsigned
2927 | dissect_snmp_DisplayString(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2928 | offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
2929 | NULL((void*)0));
2930 |
2931 | return offset;
2932 | }
2933 |
2934 |
2935 | static const ber_sequence_t SimpleOpen_U_sequence[] = {
2936 | { &hf_snmp_smux_version , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_smux_version },
2937 | { &hf_snmp_identity , BER_CLASS_UNI0, BER_UNI_TAG_OID6, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_OBJECT_IDENTIFIER },
2938 | { &hf_snmp_description , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_DisplayString },
2939 | { &hf_snmp_password , BER_CLASS_UNI0, BER_UNI_TAG_OCTETSTRING4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_OCTET_STRING },
2940 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2941 | };
2942 |
2943 | static unsigned
2944 | dissect_snmp_SimpleOpen_U(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2945 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
2946 | SimpleOpen_U_sequence, hf_index, ett_snmp_SimpleOpen_U);
2947 |
2948 | return offset;
2949 | }
2950 |
2951 |
2952 |
2953 | static unsigned
2954 | dissect_snmp_SimpleOpen(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2955 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
2956 | hf_index, BER_CLASS_APP1, 0, true1, dissect_snmp_SimpleOpen_U);
2957 |
2958 | return offset;
2959 | }
2960 |
2961 |
2962 | static const value_string snmp_OpenPDU_vals[] = {
2963 | { 0, "smux-simple" },
2964 | { 0, NULL((void*)0) }
2965 | };
2966 |
2967 | static const ber_choice_t OpenPDU_choice[] = {
2968 | { 0, &hf_snmp_smux_simple , BER_CLASS_APP1, 0, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_SimpleOpen },
2969 | { 0, NULL((void*)0), 0, 0, 0, NULL((void*)0) }
2970 | };
2971 |
2972 | static unsigned
2973 | dissect_snmp_OpenPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2974 | offset = dissect_ber_choice(actx, tree, tvb, offset,
2975 | OpenPDU_choice, hf_index, ett_snmp_OpenPDU,
2976 | NULL((void*)0));
2977 |
2978 | return offset;
2979 | }
2980 |
2981 |
2982 | static const value_string snmp_ClosePDU_U_vals[] = {
2983 | { 0, "goingDown" },
2984 | { 1, "unsupportedVersion" },
2985 | { 2, "packetFormat" },
2986 | { 3, "protocolError" },
2987 | { 4, "internalError" },
2988 | { 5, "authenticationFailure" },
2989 | { 0, NULL((void*)0) }
2990 | };
2991 |
2992 |
2993 | static unsigned
2994 | dissect_snmp_ClosePDU_U(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
2995 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
2996 | NULL((void*)0));
2997 |
2998 | return offset;
2999 | }
3000 |
3001 |
3002 |
3003 | static unsigned
3004 | dissect_snmp_ClosePDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3005 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
3006 | hf_index, BER_CLASS_APP1, 1, true1, dissect_snmp_ClosePDU_U);
3007 |
3008 | return offset;
3009 | }
3010 |
3011 |
3012 |
3013 | static unsigned
3014 | dissect_snmp_INTEGER_M1_2147483647(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3015 | offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,
3016 | -1, 2147483647U, hf_index, NULL((void*)0));
3017 |
3018 | return offset;
3019 | }
3020 |
3021 |
3022 | static const value_string snmp_T_operation_vals[] = {
3023 | { 0, "delete" },
3024 | { 1, "readOnly" },
3025 | { 2, "readWrite" },
3026 | { 0, NULL((void*)0) }
3027 | };
3028 |
3029 |
3030 | static unsigned
3031 | dissect_snmp_T_operation(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3032 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
3033 | NULL((void*)0));
3034 |
3035 | return offset;
3036 | }
3037 |
3038 |
3039 | static const ber_sequence_t RReqPDU_U_sequence[] = {
3040 | { &hf_snmp_subtree , BER_CLASS_UNI0, BER_UNI_TAG_OID6, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_ObjectName },
3041 | { &hf_snmp_priority , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_INTEGER_M1_2147483647 },
3042 | { &hf_snmp_operation , BER_CLASS_UNI0, BER_UNI_TAG_INTEGER2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_T_operation },
3043 | { NULL((void*)0), 0, 0, 0, NULL((void*)0) }
3044 | };
3045 |
3046 | static unsigned
3047 | dissect_snmp_RReqPDU_U(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3048 | offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
3049 | RReqPDU_U_sequence, hf_index, ett_snmp_RReqPDU_U);
3050 |
3051 | return offset;
3052 | }
3053 |
3054 |
3055 |
3056 | static unsigned
3057 | dissect_snmp_RReqPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3058 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
3059 | hf_index, BER_CLASS_APP1, 2, true1, dissect_snmp_RReqPDU_U);
3060 |
3061 | return offset;
3062 | }
3063 |
3064 |
3065 | static const value_string snmp_RRspPDU_U_vals[] = {
3066 | { -1, "failure" },
3067 | { 0, NULL((void*)0) }
3068 | };
3069 |
3070 |
3071 | static unsigned
3072 | dissect_snmp_RRspPDU_U(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3073 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
3074 | NULL((void*)0));
3075 |
3076 | return offset;
3077 | }
3078 |
3079 |
3080 |
3081 | static unsigned
3082 | dissect_snmp_RRspPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3083 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
3084 | hf_index, BER_CLASS_APP1, 3, true1, dissect_snmp_RRspPDU_U);
3085 |
3086 | return offset;
3087 | }
3088 |
3089 |
3090 | static const value_string snmp_RegisterResponse_vals[] = {
3091 | { 0, "rRspPDU" },
3092 | { 1, "pDUs" },
3093 | { 0, NULL((void*)0) }
3094 | };
3095 |
3096 | static const ber_choice_t RegisterResponse_choice[] = {
3097 | { 0, &hf_snmp_rRspPDU , BER_CLASS_APP1, 3, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_RRspPDU },
3098 | { 1, &hf_snmp_pDUs , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_PDUs },
3099 | { 0, NULL((void*)0), 0, 0, 0, NULL((void*)0) }
3100 | };
3101 |
3102 | static unsigned
3103 | dissect_snmp_RegisterResponse(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3104 | offset = dissect_ber_choice(actx, tree, tvb, offset,
3105 | RegisterResponse_choice, hf_index, ett_snmp_RegisterResponse,
3106 | NULL((void*)0));
3107 |
3108 | return offset;
3109 | }
3110 |
3111 |
3112 | static const value_string snmp_SOutPDU_U_vals[] = {
3113 | { 0, "commit" },
3114 | { 1, "rollback" },
3115 | { 0, NULL((void*)0) }
3116 | };
3117 |
3118 |
3119 | static unsigned
3120 | dissect_snmp_SOutPDU_U(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3121 | offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
3122 | NULL((void*)0));
3123 |
3124 | return offset;
3125 | }
3126 |
3127 |
3128 |
3129 | static unsigned
3130 | dissect_snmp_SOutPDU(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3131 | offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
3132 | hf_index, BER_CLASS_APP1, 4, true1, dissect_snmp_SOutPDU_U);
3133 |
3134 | return offset;
3135 | }
3136 |
3137 |
3138 | static const value_string snmp_SMUX_PDUs_vals[] = {
3139 | { 0, "open" },
3140 | { 1, "close" },
3141 | { 2, "registerRequest" },
3142 | { 3, "registerResponse" },
3143 | { 4, "commitOrRollback" },
3144 | { 0, NULL((void*)0) }
3145 | };
3146 |
3147 | static const ber_choice_t SMUX_PDUs_choice[] = {
3148 | { 0, &hf_snmp_open , BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_OpenPDU },
3149 | { 1, &hf_snmp_close , BER_CLASS_APP1, 1, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_ClosePDU },
3150 | { 2, &hf_snmp_registerRequest, BER_CLASS_APP1, 2, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_RReqPDU },
3151 | { 3, &hf_snmp_registerResponse, BER_CLASS_ANY99/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_RegisterResponse },
3152 | { 4, &hf_snmp_commitOrRollback, BER_CLASS_APP1, 4, BER_FLAGS_NOOWNTAG0x00000004, dissect_snmp_SOutPDU },
3153 | { 0, NULL((void*)0), 0, 0, 0, NULL((void*)0) }
3154 | };
3155 |
3156 | static unsigned
3157 | dissect_snmp_SMUX_PDUs(bool_Bool implicit_tag _U___attribute__((unused)), tvbuff_t *tvb _U___attribute__((unused)), unsigned offset _U___attribute__((unused)), asn1_ctx_t *actx _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), int hf_index _U___attribute__((unused))) {
3158 |
3159 | snmp_conv_info_t *snmp_info = snmp_find_conversation_and_get_conv_data(actx->pinfo);
3160 |
3161 | actx->private_data = snmp_info;
3162 |
3163 | offset = dissect_ber_choice(actx, tree, tvb, offset,
3164 | SMUX_PDUs_choice, hf_index, ett_snmp_SMUX_PDUs,
3165 | NULL((void*)0));
3166 |
3167 | return offset;
3168 | }
3169 |
3170 | /*--- PDUs ---*/
3171 |
3172 | static int dissect_SMUX_PDUs_PDU(tvbuff_t *tvb _U___attribute__((unused)), packet_info *pinfo _U___attribute__((unused)), proto_tree *tree _U___attribute__((unused)), void *data _U___attribute__((unused))) {
3173 | unsigned offset = 0;
3174 | asn1_ctx_t asn1_ctx;
3175 | asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true1, pinfo);
3176 | offset = dissect_snmp_SMUX_PDUs(false0, tvb, offset, &asn1_ctx, tree, hf_snmp_SMUX_PDUs_PDU);
3177 | return offset;
3178 | }
3179 |
3180 |
3181 | static snmp_conv_info_t*
3182 | snmp_find_conversation_and_get_conv_data(packet_info *pinfo) {
3183 |
3184 | conversation_t *conversation = NULL((void*)0);
3185 | snmp_conv_info_t *snmp_info = NULL((void*)0);
3186 |
3187 | /* Get the conversation with the wildcarded port, if it exists
3188 | * and is associated with SNMP, so that requests and responses
3189 | * can be matched even if the response comes from a different,
3190 | * ephemeral, source port, as originally done in OS/400.
3191 | * On UDP, we do not automatically call conversation_set_port2()
3192 | * and we do not want to do so. Possibly this should eventually
3193 | * use find_conversation_full and separate the "SNMP conversation"
3194 | * from "the transport layer conversation that carries SNMP."
3195 | */
3196 | if (pinfo->destport == UDP_PORT_SNMP161) {
3197 | conversation = find_conversation_strat(pinfo, conversation_pt_to_conversation_type(pinfo->ptype), NO_PORT_B0x00020000, 0);
3198 | } else {
3199 | conversation = find_conversation_strat(pinfo, conversation_pt_to_conversation_type(pinfo->ptype), NO_PORT_B0x00020000, 1);
3200 | }
3201 | if ( (conversation == NULL((void*)0)) || (conversation_get_dissector(conversation, pinfo->num)!=snmp_handle) ) {
3202 | conversation = conversation_new_strat(pinfo, conversation_pt_to_conversation_type(pinfo->ptype), NO_PORT20x02);
3203 | conversation_set_dissector(conversation, snmp_handle);
3204 |
3205 | conversation = conversation_new_strat(pinfo, CONVERSATION_SNMP, NO_PORT20x02);
3206 | }
3207 |
3208 | snmp_info = (snmp_conv_info_t *)conversation_get_proto_data(conversation, proto_snmp);
3209 | if (snmp_info == NULL((void*)0)) {
3210 | snmp_info = wmem_new0(wmem_file_scope(), snmp_conv_info_t)((snmp_conv_info_t*)wmem_alloc0((wmem_file_scope()), sizeof(snmp_conv_info_t )));
3211 | snmp_info->request_response=wmem_map_new(wmem_file_scope(), g_int_hash, g_int_equal);
3212 |
3213 | conversation_add_proto_data(conversation, proto_snmp, snmp_info);
3214 | }
3215 | return snmp_info;
3216 | }
3217 |
3218 | unsigned
3219 | dissect_snmp_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
3220 | proto_tree *tree, int proto, int ett, bool_Bool is_tcp)
3221 | {
3222 |
3223 | unsigned length_remaining;
3224 | int8_t ber_class;
3225 | bool_Bool pc, ind = 0;
3226 | int32_t tag;
3227 | uint32_t len;
3228 | unsigned message_length;
3229 | int start_offset = offset;
3230 | uint32_t version = 0;
3231 | tvbuff_t *next_tvb;
3232 |
3233 | proto_tree *snmp_tree = NULL((void*)0);
3234 | proto_item *item = NULL((void*)0);
3235 |
3236 | snmp_conv_info_t *snmp_info = snmp_find_conversation_and_get_conv_data(pinfo);
3237 |
3238 | asn1_ctx_t asn1_ctx;
3239 | asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true1, pinfo);
3240 |
3241 | asn1_ctx.private_data = snmp_info;
3242 |
3243 | usm_p.msg_tvb = tvb;
3244 | usm_p.start_offset = tvb_offset_from_real_beginning(tvb);
3245 | usm_p.engine_tvb = NULL((void*)0);
3246 | usm_p.user_tvb = NULL((void*)0);
3247 | usm_p.auth_item = NULL((void*)0);
3248 | usm_p.auth_tvb = NULL((void*)0);
3249 | usm_p.auth_offset = 0;
3250 | usm_p.priv_tvb = NULL((void*)0);
3251 | usm_p.user_assoc = NULL((void*)0);
3252 | usm_p.authenticated = false0;
3253 | usm_p.encrypted = false0;
3254 | usm_p.boots = 0;
3255 | usm_p.snmp_time = 0;
3256 | usm_p.authOK = false0;
3257 |
3258 | /*
3259 | * This will throw an exception if we don't have any data left.
3260 | * That's what we want. (See "tcp_dissect_pdus()", which is
3261 | * similar, but doesn't have to deal with ASN.1.
3262 | * XXX - can we make "tcp_dissect_pdus()" provide enough
3263 | * information to the "get_pdu_len" routine so that we could
3264 | * have that routine deal with ASN.1, and just use
3265 | * "tcp_dissect_pdus()"?)
3266 | */
3267 | length_remaining = tvb_ensure_captured_length_remaining(tvb, offset);
3268 |
3269 | /* NOTE: we have to parse the message piece by piece, since the
3270 | * capture length may be less than the message length: a 'global'
3271 | * parsing is likely to fail.
3272 | */
3273 |
3274 | /*
3275 | * If this is SNMP-over-TCP, we might have to do reassembly
3276 | * in order to read the "Sequence Of" header.
3277 | */
3278 | if (is_tcp && snmp_desegment && pinfo->can_desegment) {
3279 | /*
3280 | * This is TCP, and we should, and can, do reassembly.
3281 | *
3282 | * Is the "Sequence Of" header split across segment
3283 | * boundaries? We require at least 6 bytes for the
3284 | * header, which allows for a 4-byte length (ASN.1
3285 | * BER).
3286 | */
3287 | if (length_remaining < 6) {
3288 | /*
3289 | * Yes. Tell the TCP dissector where the data
3290 | * for this message starts in the data it handed
3291 | * us and that we need "some more data." Don't tell
3292 | * it exactly how many bytes we need because if/when
3293 | * we ask for even more (after the header) that will
3294 | * break reassembly.
3295 | */
3296 | pinfo->desegment_offset = offset;
3297 | pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT0x0fffffff;
3298 | return 0;
3299 | }
3300 | }
3301 |
3302 | /*
3303 | * OK, try to read the "Sequence Of" header; this gets the total
3304 | * length of the SNMP message.
3305 | */
3306 | offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
3307 | /*Get the total octet length of the SNMP data*/
3308 | offset = get_ber_length(tvb, offset, &len, &ind);
3309 | message_length = len + offset;
3310 |
3311 | /*Get the SNMP version data*/
3312 | /*offset =*/ dissect_ber_integer(false0, &asn1_ctx, 0, tvb, offset, -1, &version);
3313 |
3314 |
3315 | /*
3316 | * If this is SNMP-over-TCP, we might have to do reassembly
3317 | * to get all of this message.
3318 | */
3319 | if (is_tcp && snmp_desegment && pinfo->can_desegment) {
3320 | /*
3321 | * Yes - is the message split across segment boundaries?
3322 | */
3323 | if (length_remaining < message_length) {
3324 | /*
3325 | * Yes. Tell the TCP dissector where the data
3326 | * for this message starts in the data it handed
3327 | * us, and how many more bytes we need, and
3328 | * return.
3329 | */
3330 | pinfo->desegment_offset = start_offset;
3331 | pinfo->desegment_len =
3332 | message_length - length_remaining;
3333 |
3334 | /*
3335 | * Return 0, which means "I didn't dissect anything
3336 | * because I don't have enough data - we need
3337 | * to desegment".
3338 | */
3339 | return 0;
3340 | }
3341 | }
3342 |
3343 | var_list = next_tvb_list_new(pinfo->pool);
3344 |
3345 | col_set_str(pinfo->cinfo, COL_PROTOCOL, proto_get_protocol_short_name(find_protocol_by_id(proto)));
3346 |
3347 | item = proto_tree_add_item(tree, proto, tvb, start_offset, message_length, ENC_BIG_ENDIAN0x00000000);
3348 | snmp_tree = proto_item_add_subtree(item, ett);
3349 |
3350 | switch (version) {
3351 | case 0: /* v1 */
3352 | case 1: /* v2c */
3353 | offset = dissect_snmp_Message(false0 , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
3354 | break;
3355 | case 2: /* v2u */
3356 | offset = dissect_snmp_Messagev2u(false0 , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
3357 | break;
3358 | /* v3 */
3359 | case 3:
3360 | offset = dissect_snmp_SNMPv3Message(false0 , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
3361 | break;
3362 | default:
3363 | /*
3364 | * Return the length remaining in the tvbuff, so
3365 | * if this is SNMP-over-TCP, our caller thinks there's
3366 | * nothing left to dissect.
3367 | */
3368 | expert_add_info(pinfo, item, &ei_snmp_version_unknown);
3369 | return length_remaining;
3370 | }
3371 |
3372 | /* There may be appended data after the SNMP data, so treat as raw
3373 | * data which needs to be dissected in case of UDP as UDP is PDU oriented.
3374 | */
3375 | if((!is_tcp) && (length_remaining > (unsigned)offset)) {
3376 | next_tvb = tvb_new_subset_remaining(tvb, offset);
3377 | call_dissector(data_handle, next_tvb, pinfo, tree);
3378 | } else {
3379 | next_tvb_call(var_list, pinfo, tree, NULL((void*)0), data_handle);
3380 | }
3381 |
3382 | return offset;
3383 | }
3384 |
3385 | static int
3386 | dissect_snmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U___attribute__((unused)))
3387 | {
3388 | int offset;
3389 | int8_t tmp_class;
3390 | bool_Bool tmp_pc;
3391 | int32_t tmp_tag;
3392 | uint32_t tmp_length;
3393 | bool_Bool tmp_ind;
3394 |
3395 | /*
3396 | * See if this looks like SNMP or not. if not, return 0 so
3397 | * wireshark can try some other dissector instead.
3398 | */
3399 | /* All SNMP packets are BER encoded and consist of a SEQUENCE
3400 | * that spans the entire PDU. The first item is an INTEGER that
3401 | * has the values 0-2 (version 1-3).
3402 | * if not it is not snmp.
3403 | */
3404 | /* SNMP starts with a SEQUENCE */
3405 | offset = get_ber_identifier(tvb, 0, &tmp_class, &tmp_pc, &tmp_tag);
3406 | if((tmp_class!=BER_CLASS_UNI0)||(tmp_tag!=BER_UNI_TAG_SEQUENCE16)) {
3407 | return 0;
3408 | }
3409 | /* then comes a length which spans the rest of the tvb */
3410 | offset = get_ber_length(tvb, offset, &tmp_length, &tmp_ind);
3411 | /* Loosen the heuristic a bit to handle the case where data has intentionally
3412 | * been added after the snmp PDU ( UDP case) (#3684)
3413 | * If this is fragmented or carried in ICMP, we don't expect the tvb to
3414 | * have the full length, so don't check.
3415 | */
3416 | if (!pinfo->fragmented && !pinfo->flags.in_error_pkt) {
3417 | if ( pinfo->ptype == PT_UDP ) {
3418 | if(tmp_length>(uint32_t)tvb_reported_length_remaining(tvb, offset)) {
3419 | return 0;
3420 | }
3421 | }else{
3422 | if(tmp_length!=(uint32_t)tvb_reported_length_remaining(tvb, offset)) {
3423 | return 0;
3424 | }
3425 | }
3426 | }
3427 | /* then comes an INTEGER (version)*/
3428 | get_ber_identifier(tvb, offset, &tmp_class, &tmp_pc, &tmp_tag);
3429 | if((tmp_class!=BER_CLASS_UNI0)||(tmp_tag!=BER_UNI_TAG_INTEGER2)) {
3430 | return 0;
3431 | }
3432 | /* do we need to test that version is 0 - 2 (version1-3) ? */
3433 |
3434 |
3435 | /*
3436 | * The IBM i (OS/400) SNMP agent, at least originally, would
3437 | * send responses back from some *other* UDP port, an ephemeral
3438 | * port above 5000, going back to the same IP address and port
3439 | * from which the request came, similar to TFTP. This only happens
3440 | * with the agent port, 161, not with the trap port, etc. As of
3441 | * 2015 with the latest fixes applied, it no longer does this:
3442 | * https://www.ibm.com/support/pages/ptf/SI55487
3443 | * https://www.ibm.com/support/pages/ptf/SI55537
3444 | *
3445 | * The SNMP RFCs are silent on this (cf. L2TP RFC 2661, which
3446 | * supports using either the well-known port or an ephemeral
3447 | * port as the source port for responses, while noting that
3448 | * the latter can cause issues with firewalls and NATs.) so
3449 | * possibly some other implementations could do this.
3450 | *
3451 | * If this packet went to the SNMP port, we check to see if
3452 | * there's already a conversation with one address/port pair
3453 | * matching the source IP address and port of this packet,
3454 | * the other address matching the destination IP address of this
3455 | * packet, and any destination port.
3456 | *
3457 | * If not, we create one, with its address 1/port 1 pair being
3458 | * the source address/port of this packet, its address 2 being
3459 | * the destination address of this packet, and its port 2 being
3460 | * wildcarded, and give it the SNMP dissector as a dissector.
3461 | */
3462 |
3463 | if (pinfo->destport == UDP_PORT_SNMP161) {
3464 | conversation_t *conversation = find_conversation_strat(pinfo, conversation_pt_to_conversation_type(pinfo->ptype), NO_PORT_B0x00020000|NO_GREEDY0x00100000, 0);
3465 |
3466 | if (conversation == NULL((void*)0)) {
3467 | conversation = conversation_new_strat(pinfo, conversation_pt_to_conversation_type(pinfo->ptype), NO_PORT20x02);
3468 |
3469 | conversation_set_dissector(conversation, snmp_handle);
3470 | }
3471 | else if (conversation_get_dissector(conversation,pinfo->num)!=snmp_handle) {
3472 | conversation_set_dissector(conversation, snmp_handle);
3473 | }
3474 | }
3475 |
3476 | return dissect_snmp_pdu(tvb, 0, pinfo, tree, proto_snmp, ett_snmp, false0);
3477 | }
3478 |
3479 | static int
3480 | dissect_snmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U___attribute__((unused)))
3481 | {
3482 | int offset = 0;
3483 | unsigned message_len;
3484 |
3485 | while (tvb_reported_length_remaining(tvb, offset) > 0) {
3486 | message_len = dissect_snmp_pdu(tvb, offset, pinfo, tree, proto_snmp, ett_snmp, true1);
3487 | if (message_len == 0) {
3488 | /*
3489 | * We don't have all the data for that message,
3490 | * so we need to do desegmentation;
3491 | * "dissect_snmp_pdu()" has set that up.
3492 | */
3493 | break;
3494 | }
3495 | offset += message_len;
3496 | }
3497 | return tvb_captured_length(tvb);
3498 | }
3499 |
3500 | static int
3501 | dissect_smux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
3502 | {
3503 | proto_tree *smux_tree = NULL((void*)0);
3504 | proto_item *item = NULL((void*)0);
3505 |
3506 | var_list = next_tvb_list_new(pinfo->pool);
3507 |
3508 | col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMUX");
3509 |
3510 | item = proto_tree_add_item(tree, proto_smux, tvb, 0, -1, ENC_NA0x00000000);
3511 | smux_tree = proto_item_add_subtree(item, ett_smux);
3512 |
3513 | return dissect_SMUX_PDUs_PDU(tvb, pinfo, smux_tree, data);
3514 | }
3515 |
3516 | /*
3517 | MD5 Password to Key Algorithm from RFC 3414 A.2.1
3518 | SHA1 Password to Key Algorithm from RFC 3414 A.2.2
3519 | SHA2 Password to Key Algorithm from RFC 7860 9.3
3520 | */
3521 | static void
3522 | snmp_usm_password_to_key(const snmp_usm_auth_model_t model, const uint8_t *password,
3523 | unsigned passwordlen, const uint8_t *engineID, unsigned engineLength, uint8_t *key)
3524 | {
3525 | gcry_md_hd_t hash_handle;
3526 | uint8_t *cp, password_buf[64];
3527 | uint32_t password_index = 0;
3528 | uint32_t count = 0, i;
3529 | unsigned hash_len;
3530 |
3531 | if (gcry_md_open(&hash_handle, auth_hash_algo[model], 0)) {
27 | ← | Assuming the condition is true | →
28 | ← | Taking true branch | →
34 | ← | Assuming the condition is false | →
35 | ← | Taking false branch | →
3532 | return;
29 | ← | Returning without writing to '*key' | →
3533 | }
3534 |
3535 | hash_len = auth_hash_len[model];
3536 |
3537 | /**********************************************/
3538 | /* Use while loop until we've done 1 Megabyte */
3539 | /**********************************************/
3540 | while (count < 1048576) {
36 | ← | Loop condition is true. Entering loop body | →
3541 | cp = password_buf;
3542 | if (passwordlen
36.1 | 'passwordlen' is not equal to 0
!= 0) {
37 | ← | Taking true branch | →
3543 | for (i = 0; i < 64; i++) {
38 | ← | Loop condition is true. Entering loop body | →
3544 | /*************************************************/
3545 | /* Take the next octet of the password, wrapping */
3546 | /* to the beginning of the password as necessary.*/
3547 | /*************************************************/
3548 | *cp++ = password[password_index++ % passwordlen];
39 | ← | Assigned value is uninitialized
3549 | }
3550 | } else {
3551 | *cp = 0;
3552 | }
3553 | gcry_md_write(hash_handle, password_buf, 64);
3554 | count += 64;
3555 | }
3556 | memcpy(key, gcry_md_read(hash_handle, 0), hash_len);
3557 | gcry_md_close(hash_handle);
3558 |
3559 | /*****************************************************/
3560 | /* Now localise the key with the engineID and pass */
3561 | /* through hash function to produce final key */
3562 | /* We ignore invalid engineLengths here. More strict */
3563 | /* checking is done in snmp_users_update_cb. */
3564 | /*****************************************************/
3565 | if (gcry_md_open(&hash_handle, auth_hash_algo[model], 0)) {
3566 | return;
3567 | }
3568 | gcry_md_write(hash_handle, key, hash_len);
3569 | gcry_md_write(hash_handle, engineID, engineLength);
3570 | gcry_md_write(hash_handle, key, hash_len);
3571 | memcpy(key, gcry_md_read(hash_handle, 0), hash_len);
3572 | gcry_md_close(hash_handle);
3573 | return;
3574 | }
3575 |
3576 | static void
3577 | process_prefs(void)
3578 | {
3579 | }
3580 |
3581 | UAT_LSTRING_CB_DEF(snmp_users,userName,snmp_ue_assoc_t,user.userName.data,user.userName.len)static void snmp_users_userName_set_cb(void* rec, const char* buf, unsigned len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { uint8_t* new_val = uat_unesc (buf,len,&(((snmp_ue_assoc_t*)rec)->user.userName.len) ); g_free((((snmp_ue_assoc_t*)rec)->user.userName.data)); ( ((snmp_ue_assoc_t*)rec)->user.userName.data) = new_val; } static void snmp_users_userName_tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { if (((snmp_ue_assoc_t*)rec )->user.userName.data ) { *out_ptr = uat_esc(((snmp_ue_assoc_t *)rec)->user.userName.data, (((snmp_ue_assoc_t*)rec)->user .userName.len)); *out_len = (unsigned)strlen(*out_ptr); } else { *out_ptr = g_strdup_inline (""); *out_len = 0; } }
3582 | UAT_LSTRING_CB_DEF(snmp_users,authPassword,snmp_ue_assoc_t,user.authPassword.data,user.authPassword.len)static void snmp_users_authPassword_set_cb(void* rec, const char * buf, unsigned len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { uint8_t* new_val = uat_unesc (buf,len,&(((snmp_ue_assoc_t*)rec)->user.authPassword. len)); g_free((((snmp_ue_assoc_t*)rec)->user.authPassword. data)); (((snmp_ue_assoc_t*)rec)->user.authPassword.data) = new_val; } static void snmp_users_authPassword_tostr_cb(void * rec, char** out_ptr, unsigned* out_len, const void* u1 __attribute__ ((unused)), const void* u2 __attribute__((unused))) { if (((snmp_ue_assoc_t *)rec)->user.authPassword.data ) { *out_ptr = uat_esc(((snmp_ue_assoc_t *)rec)->user.authPassword.data, (((snmp_ue_assoc_t*)rec)-> user.authPassword.len)); *out_len = (unsigned)strlen(*out_ptr ); } else { *out_ptr = g_strdup_inline (""); *out_len = 0; } }
3583 | UAT_LSTRING_CB_DEF(snmp_users,privPassword,snmp_ue_assoc_t,user.privPassword.data,user.privPassword.len)static void snmp_users_privPassword_set_cb(void* rec, const char * buf, unsigned len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { uint8_t* new_val = uat_unesc (buf,len,&(((snmp_ue_assoc_t*)rec)->user.privPassword. len)); g_free((((snmp_ue_assoc_t*)rec)->user.privPassword. data)); (((snmp_ue_assoc_t*)rec)->user.privPassword.data) = new_val; } static void snmp_users_privPassword_tostr_cb(void * rec, char** out_ptr, unsigned* out_len, const void* u1 __attribute__ ((unused)), const void* u2 __attribute__((unused))) { if (((snmp_ue_assoc_t *)rec)->user.privPassword.data ) { *out_ptr = uat_esc(((snmp_ue_assoc_t *)rec)->user.privPassword.data, (((snmp_ue_assoc_t*)rec)-> user.privPassword.len)); *out_len = (unsigned)strlen(*out_ptr ); } else { *out_ptr = g_strdup_inline (""); *out_len = 0; } }
3584 | UAT_BUFFER_CB_DEF(snmp_users,engine_id,snmp_ue_assoc_t,engine.data,engine.len)static void snmp_users_engine_id_set_cb(void* rec, const char * buf, unsigned len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { unsigned char* new_buf = len ? (unsigned char *)g_memdup2(buf,len) : ((void*)0); g_free ((((snmp_ue_assoc_t*)rec)->engine.data)); (((snmp_ue_assoc_t *)rec)->engine.data) = new_buf; (((snmp_ue_assoc_t*)rec)-> engine.len) = len; } static void snmp_users_engine_id_tostr_cb (void* rec, char** out_ptr, unsigned* out_len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused ))) { *out_ptr = ((snmp_ue_assoc_t*)rec)->engine.data ? (char *)g_memdup2(((snmp_ue_assoc_t*)rec)->engine.data,((snmp_ue_assoc_t *)rec)->engine.len) : g_strdup_inline (""); *out_len = ((snmp_ue_assoc_t *)rec)->engine.len; }
3585 | UAT_VS_DEF(snmp_users,auth_model,snmp_ue_assoc_t,unsigned,0,"MD5")static void snmp_users_auth_model_set_cb(void* rec, const char * buf, unsigned len, const void* vs, const void* u2 __attribute__ ((unused))) { unsigned i; char* str = g_strndup(buf,len); const char* cstr; ((snmp_ue_assoc_t*)rec)->auth_model = 0; for( i=0; ( cstr = ((const value_string*)vs)[i].strptr ) ;i++) { if ((strcmp ((const char *) (cstr), (const char *) (str)) == 0) ) { ((snmp_ue_assoc_t*)rec)->auth_model = (unsigned)((const value_string*)vs)[i].value; g_free(str); return; } } g_free( str); } static void snmp_users_auth_model_tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* vs, const void * u2 __attribute__((unused))) { unsigned i; for(i=0;((const value_string *)vs)[i].strptr;i++) { if ( ((const value_string*)vs)[i].value == ((snmp_ue_assoc_t*)rec)->auth_model ) { *out_ptr = g_strdup_inline (((const value_string*)vs)[i].strptr); *out_len = (unsigned) strlen(*out_ptr); return; } } *out_ptr = g_strdup_inline ("MD5" ); *out_len = (unsigned)strlen("MD5"); }
3586 | UAT_VS_DEF(snmp_users,priv_proto,snmp_ue_assoc_t,unsigned,0,"DES")static void snmp_users_priv_proto_set_cb(void* rec, const char * buf, unsigned len, const void* vs, const void* u2 __attribute__ ((unused))) { unsigned i; char* str = g_strndup(buf,len); const char* cstr; ((snmp_ue_assoc_t*)rec)->priv_proto = 0; for( i=0; ( cstr = ((const value_string*)vs)[i].strptr ) ;i++) { if ((strcmp ((const char *) (cstr), (const char *) (str)) == 0) ) { ((snmp_ue_assoc_t*)rec)->priv_proto = (unsigned)((const value_string*)vs)[i].value; g_free(str); return; } } g_free( str); } static void snmp_users_priv_proto_tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* vs, const void * u2 __attribute__((unused))) { unsigned i; for(i=0;((const value_string *)vs)[i].strptr;i++) { if ( ((const value_string*)vs)[i].value == ((snmp_ue_assoc_t*)rec)->priv_proto ) { *out_ptr = g_strdup_inline (((const value_string*)vs)[i].strptr); *out_len = (unsigned) strlen(*out_ptr); return; } } *out_ptr = g_strdup_inline ("DES" ); *out_len = (unsigned)strlen("DES"); }
3587 | UAT_VS_DEF(snmp_users,priv_key_exp,snmp_ue_assoc_t,unsigned,0,"draft-reeder-snmpv3-usm-3desede-00")static void snmp_users_priv_key_exp_set_cb(void* rec, const char * buf, unsigned len, const void* vs, const void* u2 __attribute__ ((unused))) { unsigned i; char* str = g_strndup(buf,len); const char* cstr; ((snmp_ue_assoc_t*)rec)->priv_key_exp = 0; for (i=0; ( cstr = ((const value_string*)vs)[i].strptr ) ;i++) { if ((strcmp ((const char *) (cstr), (const char *) (str)) == 0) ) { ((snmp_ue_assoc_t*)rec)->priv_key_exp = (unsigned)((const value_string*)vs)[i].value; g_free(str); return; } } g_free( str); } static void snmp_users_priv_key_exp_tostr_cb(void* rec , char** out_ptr, unsigned* out_len, const void* vs, const void * u2 __attribute__((unused))) { unsigned i; for(i=0;((const value_string *)vs)[i].strptr;i++) { if ( ((const value_string*)vs)[i].value == ((snmp_ue_assoc_t*)rec)->priv_key_exp ) { *out_ptr = g_strdup_inline (((const value_string*)vs)[i].strptr); *out_len = (unsigned) strlen(*out_ptr); return; } } *out_ptr = g_strdup_inline ("draft-reeder-snmpv3-usm-3desede-00" ); *out_len = (unsigned)strlen("draft-reeder-snmpv3-usm-3desede-00" ); }
3588 |
3589 | static void *
3590 | snmp_specific_trap_copy_cb(void *dest, const void *orig, size_t len _U___attribute__((unused)))
3591 | {
3592 | snmp_st_assoc_t *u = (snmp_st_assoc_t *)dest;
3593 | const snmp_st_assoc_t *o = (const snmp_st_assoc_t *)orig;
3594 |
3595 | u->enterprise = g_strdup(o->enterprise)g_strdup_inline (o->enterprise);
3596 | u->trap = o->trap;
3597 | u->desc = g_strdup(o->desc)g_strdup_inline (o->desc);
3598 |
3599 | return dest;
3600 | }
3601 |
3602 | static void
3603 | snmp_specific_trap_free_cb(void *r)
3604 | {
3605 | snmp_st_assoc_t *u = (snmp_st_assoc_t *)r;
3606 |
3607 | g_free(u->enterprise);
3608 | g_free(u->desc);
3609 | }
3610 |
3611 | UAT_CSTRING_CB_DEF(specific_traps, enterprise, snmp_st_assoc_t)static void specific_traps_enterprise_set_cb(void* rec, const char* buf, unsigned len, const void* u1 __attribute__((unused )), const void* u2 __attribute__((unused))) { char* new_buf = g_strndup(buf,len); g_free((((snmp_st_assoc_t*)rec)->enterprise )); (((snmp_st_assoc_t*)rec)->enterprise) = new_buf; } static void specific_traps_enterprise_tostr_cb(void* rec, char** out_ptr , unsigned* out_len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { if (((snmp_st_assoc_t*)rec )->enterprise ) { *out_ptr = g_strdup_inline ((((snmp_st_assoc_t *)rec)->enterprise)); *out_len = (unsigned)strlen((((snmp_st_assoc_t *)rec)->enterprise)); } else { *out_ptr = g_strdup_inline ( ""); *out_len = 0; } }
3612 | UAT_DEC_CB_DEF(specific_traps, trap, snmp_st_assoc_t)static void specific_traps_trap_set_cb(void* rec, const char* buf, unsigned len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { char* tmp_str = g_strndup (buf,len); ws_strtou32(tmp_str, ((void*)0), &((snmp_st_assoc_t *)rec)->trap); g_free(tmp_str); } static void specific_traps_trap_tostr_cb (void* rec, char** out_ptr, unsigned* out_len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused ))) { *out_ptr = wmem_strdup_printf(((void*)0), "%u",((snmp_st_assoc_t *)rec)->trap); *out_len = (unsigned)strlen(*out_ptr); }
3613 | UAT_CSTRING_CB_DEF(specific_traps, desc, snmp_st_assoc_t)static void specific_traps_desc_set_cb(void* rec, const char* buf, unsigned len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused))) { char* new_buf = g_strndup (buf,len); g_free((((snmp_st_assoc_t*)rec)->desc)); (((snmp_st_assoc_t *)rec)->desc) = new_buf; } static void specific_traps_desc_tostr_cb (void* rec, char** out_ptr, unsigned* out_len, const void* u1 __attribute__((unused)), const void* u2 __attribute__((unused ))) { if (((snmp_st_assoc_t*)rec)->desc ) { *out_ptr = g_strdup_inline ((((snmp_st_assoc_t*)rec)->desc)); *out_len = (unsigned)strlen ((((snmp_st_assoc_t*)rec)->desc)); } else { *out_ptr = g_strdup_inline (""); *out_len = 0; } }
3614 |
3615 | /*--- proto_register_snmp -------------------------------------------*/
3616 | void proto_register_snmp(void) {
3617 | /* List of fields */
3618 | static hf_register_info hf[] = {
3619 | { &hf_snmp_response_in,
3620 | { "Response In", "snmp.response_in", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_RESPONSE)((gpointer) (glong) (FT_FRAMENUM_RESPONSE)), 0x0,
3621 | "The response to this SNMP request is in this frame", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3622 | { &hf_snmp_response_to,
3623 | { "Response To", "snmp.response_to", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_REQUEST)((gpointer) (glong) (FT_FRAMENUM_REQUEST)), 0x0,
3624 | "This is a response to the SNMP request in this frame", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3625 | { &hf_snmp_time,
3626 | { "Time", "snmp.time", FT_RELATIVE_TIME, BASE_NONE, NULL((void*)0), 0x0,
3627 | "The time between the Request and the Response", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3628 | { &hf_snmp_v3_flags_auth,
3629 | { "Authenticated", "snmp.v3.flags.auth", FT_BOOLEAN, 8,
3630 | TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset )))), TH_AUTH0x01, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3631 | { &hf_snmp_v3_flags_crypt,
3632 | { "Encrypted", "snmp.v3.flags.crypt", FT_BOOLEAN, 8,
3633 | TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset )))), TH_CRYPT0x02, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3634 | { &hf_snmp_v3_flags_report,
3635 | { "Reportable", "snmp.v3.flags.report", FT_BOOLEAN, 8,
3636 | TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset )))), TH_REPORT0x04, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3637 | { &hf_snmp_engineid_conform, {
3638 | "Engine ID Conformance", "snmp.engineid.conform", FT_BOOLEAN, 8,
3639 | TFS(&tfs_snmp_engineid_conform)((0 ? (const struct true_false_string*)0 : ((&tfs_snmp_engineid_conform )))), F_SNMP_ENGINEID_CONFORM0x80, "Engine ID RFC3411 Conformance", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3640 | { &hf_snmp_engineid_enterprise, {
3641 | "Engine Enterprise ID", "snmp.engineid.enterprise", FT_UINT32, BASE_ENTERPRISESBASE_CUSTOM,
3642 | STRINGS_ENTERPRISES((const void *) (size_t) (enterprises_base_custom)), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3643 | { &hf_snmp_engineid_format, {
3644 | "Engine ID Format", "snmp.engineid.format", FT_UINT8, BASE_DEC,
3645 | VALS(snmp_engineid_format_vals)((0 ? (const struct _value_string*)0 : ((snmp_engineid_format_vals )))), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3646 | { &hf_snmp_engineid_ipv4, {
3647 | "Engine ID Data: IPv4 address", "snmp.engineid.ipv4", FT_IPv4, BASE_NONE,
3648 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3649 | { &hf_snmp_engineid_ipv6, {
3650 | "Engine ID Data: IPv6 address", "snmp.engineid.ipv6", FT_IPv6, BASE_NONE,
3651 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3652 | { &hf_snmp_engineid_cisco_type, {
3653 | "Engine ID Data: Cisco type", "snmp.engineid.cisco.type", FT_UINT8, BASE_HEX,
3654 | VALS(snmp_engineid_cisco_type_vals)((0 ? (const struct _value_string*)0 : ((snmp_engineid_cisco_type_vals )))), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3655 | { &hf_snmp_engineid_mac, {
3656 | "Engine ID Data: MAC address", "snmp.engineid.mac", FT_ETHER, BASE_NONE,
3657 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3658 | { &hf_snmp_engineid_text, {
3659 | "Engine ID Data: Text", "snmp.engineid.text", FT_STRING, BASE_NONE,
3660 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3661 | { &hf_snmp_engineid_time, {
3662 | "Engine ID Data: Creation Time", "snmp.engineid.time", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
3663 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3664 | { &hf_snmp_engineid_data, {
3665 | "Engine ID Data", "snmp.engineid.data", FT_BYTES, BASE_NONE,
3666 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3667 | { &hf_snmp_msgAuthentication, {
3668 | "Authentication", "snmp.v3.auth", FT_BOOLEAN, BASE_NONE,
3669 | TFS(&auth_flags)((0 ? (const struct true_false_string*)0 : ((&auth_flags) ))), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3670 | { &hf_snmp_decryptedPDU, {
3671 | "Decrypted ScopedPDU", "snmp.decrypted_pdu", FT_BYTES, BASE_NONE,
3672 | NULL((void*)0), 0, "Decrypted PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3673 | { &hf_snmp_noSuchObject, {
3674 | "noSuchObject", "snmp.noSuchObject", FT_NONE, BASE_NONE,
3675 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3676 | { &hf_snmp_noSuchInstance, {
3677 | "noSuchInstance", "snmp.noSuchInstance", FT_NONE, BASE_NONE,
3678 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3679 | { &hf_snmp_endOfMibView, {
3680 | "endOfMibView", "snmp.endOfMibView", FT_NONE, BASE_NONE,
3681 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3682 | { &hf_snmp_unSpecified, {
3683 | "unSpecified", "snmp.unSpecified", FT_NONE, BASE_NONE,
3684 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3685 |
3686 | { &hf_snmp_integer32_value, {
3687 | "Value (Integer32)", "snmp.value.int", FT_INT64, BASE_DEC,
3688 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3689 | { &hf_snmp_octetstring_value, {
3690 | "Value (OctetString)", "snmp.value.octets", FT_BYTES, BASE_SHOW_ASCII_PRINTABLE0x00010000,
3691 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3692 | { &hf_snmp_oid_value, {
3693 | "Value (OID)", "snmp.value.oid", FT_OID, BASE_NONE,
3694 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3695 | { &hf_snmp_null_value, {
3696 | "Value (Null)", "snmp.value.null", FT_NONE, BASE_NONE,
3697 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3698 | { &hf_snmp_ipv4_value, {
3699 | "Value (IpAddress)", "snmp.value.ipv4", FT_IPv4, BASE_NONE,
3700 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3701 | { &hf_snmp_ipv6_value, {
3702 | "Value (IpAddress)", "snmp.value.ipv6", FT_IPv6, BASE_NONE,
3703 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3704 | { &hf_snmp_anyaddress_value, {
3705 | "Value (IpAddress)", "snmp.value.addr", FT_BYTES, BASE_NONE,
3706 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3707 | { &hf_snmp_unsigned32_value, {
3708 | "Value (Unsigned32)", "snmp.value.u32", FT_INT64, BASE_DEC,
3709 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3710 | { &hf_snmp_gauge32_value, {
3711 | "Value (Gauge32)", "snmp.value.g32", FT_INT64, BASE_DEC,
3712 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3713 | { &hf_snmp_unknown_value, {
3714 | "Value (Unknown)", "snmp.value.unk", FT_BYTES, BASE_NONE,
3715 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3716 | { &hf_snmp_counter_value, {
3717 | "Value (Counter32)", "snmp.value.counter", FT_UINT64, BASE_DEC,
3718 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3719 | { &hf_snmp_big_counter_value, {
3720 | "Value (Counter64)", "snmp.value.counter", FT_UINT64, BASE_DEC,
3721 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3722 | { &hf_snmp_nsap_value, {
3723 | "Value (NSAP)", "snmp.value.nsap", FT_UINT64, BASE_DEC,
3724 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3725 | { &hf_snmp_timeticks_value, {
3726 | "Value (Timeticks)", "snmp.value.timeticks", FT_UINT64, BASE_DEC,
3727 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3728 | { &hf_snmp_opaque_value, {
3729 | "Value (Opaque)", "snmp.value.opaque", FT_BYTES, BASE_NONE,
3730 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3731 | { &hf_snmp_objectname, {
3732 | "Object Name", "snmp.name", FT_OID, BASE_NONE,
3733 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3734 | { &hf_snmp_scalar_instance_index, {
3735 | "Scalar Instance Index", "snmp.name.index", FT_UINT64, BASE_DEC,
3736 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3737 | { &hf_snmp_var_bind_str, {
3738 | "Variable-binding-string", "snmp.var-bind_str", FT_STRING, BASE_NONE,
3739 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3740 | { &hf_snmp_agentid_trailer, {
3741 | "AgentID Trailer", "snmp.agentid_trailer", FT_BYTES, BASE_NONE,
3742 | NULL((void*)0), 0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3743 |
3744 |
3745 | { &hf_snmp_SMUX_PDUs_PDU,
3746 | { "SMUX-PDUs", "snmp.SMUX_PDUs",
3747 | FT_UINT32, BASE_DEC, VALS(snmp_SMUX_PDUs_vals)((0 ? (const struct _value_string*)0 : ((snmp_SMUX_PDUs_vals) ))), 0,
3748 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3749 | { &hf_snmp_version,
3750 | { "version", "snmp.version",
3751 | FT_INT32, BASE_DEC, VALS(snmp_Version_vals)((0 ? (const struct _value_string*)0 : ((snmp_Version_vals))) ), 0,
3752 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3753 | { &hf_snmp_community,
3754 | { "community", "snmp.community",
3755 | FT_STRING, BASE_NONE, NULL((void*)0), 0,
3756 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3757 | { &hf_snmp_data,
3758 | { "data", "snmp.data",
3759 | FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals)((0 ? (const struct _value_string*)0 : ((snmp_PDUs_vals)))), 0,
3760 | "PDUs", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3761 | { &hf_snmp_parameters,
3762 | { "parameters", "snmp.parameters",
3763 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3764 | "OCTET_STRING", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3765 | { &hf_snmp_datav2u,
3766 | { "datav2u", "snmp.datav2u",
3767 | FT_UINT32, BASE_DEC, VALS(snmp_T_datav2u_vals)((0 ? (const struct _value_string*)0 : ((snmp_T_datav2u_vals) ))), 0,
3768 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3769 | { &hf_snmp_v2u_plaintext,
3770 | { "plaintext", "snmp.v2u_plaintext",
3771 | FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals)((0 ? (const struct _value_string*)0 : ((snmp_PDUs_vals)))), 0,
3772 | "PDUs", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3773 | { &hf_snmp_encrypted,
3774 | { "encrypted", "snmp.encrypted",
3775 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3776 | "OCTET_STRING", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3777 | { &hf_snmp_msgAuthoritativeEngineID,
3778 | { "msgAuthoritativeEngineID", "snmp.msgAuthoritativeEngineID",
3779 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3780 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3781 | { &hf_snmp_msgAuthoritativeEngineBoots,
3782 | { "msgAuthoritativeEngineBoots", "snmp.msgAuthoritativeEngineBoots",
3783 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3784 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3785 | { &hf_snmp_msgAuthoritativeEngineTime,
3786 | { "msgAuthoritativeEngineTime", "snmp.msgAuthoritativeEngineTime",
3787 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3788 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3789 | { &hf_snmp_msgUserName,
3790 | { "msgUserName", "snmp.msgUserName",
3791 | FT_STRING, BASE_NONE, NULL((void*)0), 0,
3792 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3793 | { &hf_snmp_msgAuthenticationParameters,
3794 | { "msgAuthenticationParameters", "snmp.msgAuthenticationParameters",
3795 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3796 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3797 | { &hf_snmp_msgPrivacyParameters,
3798 | { "msgPrivacyParameters", "snmp.msgPrivacyParameters",
3799 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3800 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3801 | { &hf_snmp_msgVersion,
3802 | { "msgVersion", "snmp.msgVersion",
3803 | FT_INT32, BASE_DEC, VALS(snmp_Version_vals)((0 ? (const struct _value_string*)0 : ((snmp_Version_vals))) ), 0,
3804 | "Version", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3805 | { &hf_snmp_msgGlobalData,
3806 | { "msgGlobalData", "snmp.msgGlobalData_element",
3807 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3808 | "HeaderData", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3809 | { &hf_snmp_msgSecurityParameters,
3810 | { "msgSecurityParameters", "snmp.msgSecurityParameters",
3811 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3812 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3813 | { &hf_snmp_msgData,
3814 | { "msgData", "snmp.msgData",
3815 | FT_UINT32, BASE_DEC, VALS(snmp_ScopedPduData_vals)((0 ? (const struct _value_string*)0 : ((snmp_ScopedPduData_vals )))), 0,
3816 | "ScopedPduData", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3817 | { &hf_snmp_msgID,
3818 | { "msgID", "snmp.msgID",
3819 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3820 | "INTEGER_0_2147483647", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3821 | { &hf_snmp_msgMaxSize,
3822 | { "msgMaxSize", "snmp.msgMaxSize",
3823 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3824 | "INTEGER_484_2147483647", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3825 | { &hf_snmp_msgFlags,
3826 | { "msgFlags", "snmp.msgFlags",
3827 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3828 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3829 | { &hf_snmp_msgSecurityModel,
3830 | { "msgSecurityModel", "snmp.msgSecurityModel",
3831 | FT_UINT32, BASE_DEC, VALS(sec_models)((0 ? (const struct _value_string*)0 : ((sec_models)))), 0,
3832 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3833 | { &hf_snmp_plaintext,
3834 | { "plaintext", "snmp.plaintext_element",
3835 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3836 | "ScopedPDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3837 | { &hf_snmp_encryptedPDU,
3838 | { "encryptedPDU", "snmp.encryptedPDU",
3839 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3840 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3841 | { &hf_snmp_contextEngineID,
3842 | { "contextEngineID", "snmp.contextEngineID",
3843 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3844 | "SnmpEngineID", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3845 | { &hf_snmp_contextName,
3846 | { "contextName", "snmp.contextName",
3847 | FT_STRING, BASE_NONE, NULL((void*)0), 0,
3848 | "OCTET_STRING", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3849 | { &hf_snmp_get_request,
3850 | { "get-request", "snmp.get_request_element",
3851 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3852 | "GetRequest_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3853 | { &hf_snmp_get_next_request,
3854 | { "get-next-request", "snmp.get_next_request_element",
3855 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3856 | "GetNextRequest_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3857 | { &hf_snmp_get_response,
3858 | { "get-response", "snmp.get_response_element",
3859 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3860 | "GetResponse_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3861 | { &hf_snmp_set_request,
3862 | { "set-request", "snmp.set_request_element",
3863 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3864 | "SetRequest_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3865 | { &hf_snmp_trap,
3866 | { "trap", "snmp.trap_element",
3867 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3868 | "Trap_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3869 | { &hf_snmp_getBulkRequest,
3870 | { "getBulkRequest", "snmp.getBulkRequest_element",
3871 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3872 | "GetBulkRequest_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3873 | { &hf_snmp_informRequest,
3874 | { "informRequest", "snmp.informRequest_element",
3875 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3876 | "InformRequest_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3877 | { &hf_snmp_snmpV2_trap,
3878 | { "snmpV2-trap", "snmp.snmpV2_trap_element",
3879 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3880 | "SNMPv2_Trap_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3881 | { &hf_snmp_report,
3882 | { "report", "snmp.report_element",
3883 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3884 | "Report_PDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3885 | { &hf_snmp_request_id,
3886 | { "request-id", "snmp.request_id",
3887 | FT_INT32, BASE_DEC, NULL((void*)0), 0,
3888 | "T_request_id", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3889 | { &hf_snmp_error_status,
3890 | { "error-status", "snmp.error_status",
3891 | FT_INT32, BASE_DEC, VALS(snmp_T_error_status_vals)((0 ? (const struct _value_string*)0 : ((snmp_T_error_status_vals )))), 0,
3892 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3893 | { &hf_snmp_error_index,
3894 | { "error-index", "snmp.error_index",
3895 | FT_INT32, BASE_DEC, NULL((void*)0), 0,
3896 | "INTEGER", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3897 | { &hf_snmp_variable_bindings,
3898 | { "variable-bindings", "snmp.variable_bindings",
3899 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3900 | "VarBindList", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3901 | { &hf_snmp_request_id_01,
3902 | { "request-id", "snmp.request_id",
3903 | FT_INT32, BASE_DEC, NULL((void*)0), 0,
3904 | "Integer32", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3905 | { &hf_snmp_non_repeaters,
3906 | { "non-repeaters", "snmp.non_repeaters",
3907 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3908 | "INTEGER_0_2147483647", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3909 | { &hf_snmp_max_repetitions,
3910 | { "max-repetitions", "snmp.max_repetitions",
3911 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3912 | "INTEGER_0_2147483647", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3913 | { &hf_snmp_enterprise,
3914 | { "enterprise", "snmp.enterprise",
3915 | FT_OID, BASE_NONE, NULL((void*)0), 0,
3916 | "EnterpriseOID", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3917 | { &hf_snmp_agent_addr,
3918 | { "agent-addr", "snmp.agent_addr",
3919 | FT_IPv4, BASE_NONE, NULL((void*)0), 0,
3920 | "NetworkAddress", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3921 | { &hf_snmp_generic_trap,
3922 | { "generic-trap", "snmp.generic_trap",
3923 | FT_INT32, BASE_DEC, VALS(snmp_GenericTrap_vals)((0 ? (const struct _value_string*)0 : ((snmp_GenericTrap_vals )))), 0,
3924 | "GenericTrap", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3925 | { &hf_snmp_specific_trap,
3926 | { "specific-trap", "snmp.specific_trap",
3927 | FT_INT32, BASE_DEC, NULL((void*)0), 0,
3928 | "SpecificTrap", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3929 | { &hf_snmp_time_stamp,
3930 | { "time-stamp", "snmp.time_stamp",
3931 | FT_UINT32, BASE_DEC, NULL((void*)0), 0,
3932 | "TimeTicks", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3933 | { &hf_snmp_name,
3934 | { "name", "snmp.name",
3935 | FT_OID, BASE_NONE, NULL((void*)0), 0,
3936 | "ObjectName", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3937 | { &hf_snmp_valueType,
3938 | { "valueType", "snmp.valueType_element",
3939 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3940 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3941 | { &hf_snmp_VarBindList_item,
3942 | { "VarBind", "snmp.VarBind_element",
3943 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3944 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3945 | { &hf_snmp_open,
3946 | { "open", "snmp.open",
3947 | FT_UINT32, BASE_DEC, VALS(snmp_OpenPDU_vals)((0 ? (const struct _value_string*)0 : ((snmp_OpenPDU_vals))) ), 0,
3948 | "OpenPDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3949 | { &hf_snmp_close,
3950 | { "close", "snmp.close",
3951 | FT_INT32, BASE_DEC, VALS(snmp_ClosePDU_U_vals)((0 ? (const struct _value_string*)0 : ((snmp_ClosePDU_U_vals )))), 0,
3952 | "ClosePDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3953 | { &hf_snmp_registerRequest,
3954 | { "registerRequest", "snmp.registerRequest_element",
3955 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3956 | "RReqPDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3957 | { &hf_snmp_registerResponse,
3958 | { "registerResponse", "snmp.registerResponse",
3959 | FT_UINT32, BASE_DEC, VALS(snmp_RegisterResponse_vals)((0 ? (const struct _value_string*)0 : ((snmp_RegisterResponse_vals )))), 0,
3960 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3961 | { &hf_snmp_commitOrRollback,
3962 | { "commitOrRollback", "snmp.commitOrRollback",
3963 | FT_INT32, BASE_DEC, VALS(snmp_SOutPDU_U_vals)((0 ? (const struct _value_string*)0 : ((snmp_SOutPDU_U_vals) ))), 0,
3964 | "SOutPDU", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3965 | { &hf_snmp_rRspPDU,
3966 | { "rRspPDU", "snmp.rRspPDU",
3967 | FT_INT32, BASE_DEC, VALS(snmp_RRspPDU_U_vals)((0 ? (const struct _value_string*)0 : ((snmp_RRspPDU_U_vals) ))), 0,
3968 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3969 | { &hf_snmp_pDUs,
3970 | { "pDUs", "snmp.pDUs",
3971 | FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals)((0 ? (const struct _value_string*)0 : ((snmp_PDUs_vals)))), 0,
3972 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3973 | { &hf_snmp_smux_simple,
3974 | { "smux-simple", "snmp.smux_simple_element",
3975 | FT_NONE, BASE_NONE, NULL((void*)0), 0,
3976 | "SimpleOpen", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3977 | { &hf_snmp_smux_version,
3978 | { "smux-version", "snmp.smux_version",
3979 | FT_INT32, BASE_DEC, VALS(snmp_T_smux_version_vals)((0 ? (const struct _value_string*)0 : ((snmp_T_smux_version_vals )))), 0,
3980 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3981 | { &hf_snmp_identity,
3982 | { "identity", "snmp.identity",
3983 | FT_OID, BASE_NONE, NULL((void*)0), 0,
3984 | "OBJECT_IDENTIFIER", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3985 | { &hf_snmp_description,
3986 | { "description", "snmp.description",
3987 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3988 | "DisplayString", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3989 | { &hf_snmp_password,
3990 | { "password", "snmp.password",
3991 | FT_BYTES, BASE_NONE, NULL((void*)0), 0,
3992 | "OCTET_STRING", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3993 | { &hf_snmp_subtree,
3994 | { "subtree", "snmp.subtree",
3995 | FT_OID, BASE_NONE, NULL((void*)0), 0,
3996 | "ObjectName", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
3997 | { &hf_snmp_priority,
3998 | { "priority", "snmp.priority",
3999 | FT_INT32, BASE_DEC, NULL((void*)0), 0,
4000 | "INTEGER_M1_2147483647", HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
4001 | { &hf_snmp_operation,
4002 | { "operation", "snmp.operation",
4003 | FT_INT32, BASE_DEC, VALS(snmp_T_operation_vals)((0 ? (const struct _value_string*)0 : ((snmp_T_operation_vals )))), 0,
4004 | NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) }},
4005 | };
4006 |
4007 | /* List of subtrees */
4008 | static int *ett[] = {
4009 | &ett_snmp,
4010 | &ett_engineid,
4011 | &ett_msgFlags,
4012 | &ett_encryptedPDU,
4013 | &ett_decrypted,
4014 | &ett_authParameters,
4015 | &ett_internet,
4016 | &ett_varbind,
4017 | &ett_name,
4018 | &ett_value,
4019 | &ett_decoding_error,
4020 | &ett_snmp_Message,
4021 | &ett_snmp_Messagev2u,
4022 | &ett_snmp_T_datav2u,
4023 | &ett_snmp_UsmSecurityParameters,
4024 | &ett_snmp_SNMPv3Message,
4025 | &ett_snmp_HeaderData,
4026 | &ett_snmp_ScopedPduData,
4027 | &ett_snmp_ScopedPDU,
4028 | &ett_snmp_PDUs,
4029 | &ett_snmp_PDU,
4030 | &ett_snmp_BulkPDU,
4031 | &ett_snmp_Trap_PDU_U,
4032 | &ett_snmp_VarBind,
4033 | &ett_snmp_VarBindList,
4034 | &ett_snmp_SMUX_PDUs,
4035 | &ett_snmp_RegisterResponse,
4036 | &ett_snmp_OpenPDU,
4037 | &ett_snmp_SimpleOpen_U,
4038 | &ett_snmp_RReqPDU_U,
4039 | };
4040 | static ei_register_info ei[] = {
4041 | { &ei_snmp_failed_decrypted_data_pdu, { "snmp.failed_decrypted_data_pdu", PI_MALFORMED0x07000000, PI_WARN0x00600000, "Failed to decrypt encryptedPDU", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4042 | { &ei_snmp_decrypted_data_bad_formatted, { "snmp.decrypted_data_bad_formatted", PI_MALFORMED0x07000000, PI_WARN0x00600000, "Decrypted data not formatted as expected, wrong key?", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4043 | { &ei_snmp_verify_authentication_error, { "snmp.verify_authentication_error", PI_MALFORMED0x07000000, PI_ERROR0x00800000, "Error while verifying Message authenticity", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4044 | { &ei_snmp_authentication_ok, { "snmp.authentication_ok", PI_CHECKSUM0x01000000, PI_CHAT0x00200000, "SNMP Authentication OK", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4045 | { &ei_snmp_authentication_error, { "snmp.authentication_error", PI_CHECKSUM0x01000000, PI_WARN0x00600000, "SNMP Authentication Error", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4046 | { &ei_snmp_varbind_not_uni_class_seq, { "snmp.varbind.not_uni_class_seq", PI_MALFORMED0x07000000, PI_WARN0x00600000, "VarBind is not an universal class sequence", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4047 | { &ei_snmp_varbind_has_indicator, { "snmp.varbind.has_indicator", PI_MALFORMED0x07000000, PI_WARN0x00600000, "VarBind has indicator set", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4048 | { &ei_snmp_objectname_not_oid, { "snmp.objectname_not_oid", PI_MALFORMED0x07000000, PI_WARN0x00600000, "ObjectName not an OID", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4049 | { &ei_snmp_objectname_has_indicator, { "snmp.objectname_has_indicator", PI_MALFORMED0x07000000, PI_WARN0x00600000, "ObjectName has indicator set", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4050 | { &ei_snmp_value_not_primitive_encoding, { "snmp.value_not_primitive_encoding", PI_MALFORMED0x07000000, PI_WARN0x00600000, "value not in primitive encoding", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4051 | { &ei_snmp_invalid_oid, { "snmp.invalid_oid", PI_MALFORMED0x07000000, PI_WARN0x00600000, "invalid oid", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4052 | { &ei_snmp_varbind_wrong_tag, { "snmp.varbind.wrong_tag", PI_MALFORMED0x07000000, PI_WARN0x00600000, "Wrong tag for SNMP VarBind error value", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4053 | { &ei_snmp_varbind_response, { "snmp.varbind.response", PI_RESPONSE_CODE0x03000000, PI_NOTE0x00400000, "Response", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4054 | { &ei_snmp_no_instance_subid, { "snmp.no_instance_subid", PI_MALFORMED0x07000000, PI_WARN0x00600000, "No instance sub-id in scalar value", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4055 | { &ei_snmp_wrong_num_of_subids, { "snmp.wrong_num_of_subids", PI_MALFORMED0x07000000, PI_WARN0x00600000, "Wrong number of instance sub-ids in scalar value", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4056 | { &ei_snmp_index_suboid_too_short, { "snmp.index_suboid_too_short", PI_MALFORMED0x07000000, PI_WARN0x00600000, "index sub-oid shorter than expected", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4057 | { &ei_snmp_unimplemented_instance_index, { "snmp.unimplemented_instance_index", PI_UNDECODED0x05000000, PI_WARN0x00600000, "OID instances not handled, if you want this implemented please contact the wireshark developers", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4058 | { &ei_snmp_index_suboid_len0, { "snmp.ndex_suboid_len0", PI_MALFORMED0x07000000, PI_WARN0x00600000, "an index sub-oid OID cannot be 0 bytes long!", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4059 | { &ei_snmp_index_suboid_too_long, { "snmp.index_suboid_too_long", PI_MALFORMED0x07000000, PI_WARN0x00600000, "index sub-oid should not be longer than remaining oid size", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4060 | { &ei_snmp_index_string_too_long, { "snmp.index_string_too_long", PI_MALFORMED0x07000000, PI_WARN0x00600000, "index string should not be longer than remaining oid size", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4061 | { &ei_snmp_column_parent_not_row, { "snmp.column_parent_not_row", PI_MALFORMED0x07000000, PI_ERROR0x00800000, "COLUMNS's parent is not a ROW", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4062 | { &ei_snmp_uint_too_large, { "snmp.uint_too_large", PI_UNDECODED0x05000000, PI_NOTE0x00400000, "Unsigned integer value > 2^64 - 1", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4063 | { &ei_snmp_int_too_large, { "snmp.int_too_large", PI_UNDECODED0x05000000, PI_NOTE0x00400000, "Signed integer value > 2^63 - 1 or <= -2^63", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4064 | { &ei_snmp_integral_value0, { "snmp.integral_value0", PI_UNDECODED0x05000000, PI_NOTE0x00400000, "Integral value is zero-length", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4065 | { &ei_snmp_missing_mib, { "snmp.missing_mib", PI_UNDECODED0x05000000, PI_NOTE0x00400000, "Unresolved value, Missing MIB", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4066 | { &ei_snmp_varbind_wrong_length_value, { "snmp.varbind.wrong_length_value", PI_MALFORMED0x07000000, PI_WARN0x00600000, "Wrong length for SNMP VarBind/value", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4067 | { &ei_snmp_varbind_wrong_class_tag, { "snmp.varbind.wrong_class_tag", PI_MALFORMED0x07000000, PI_WARN0x00600000, "Wrong class/tag for SNMP VarBind/value", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4068 | { &ei_snmp_rfc1910_non_conformant, { "snmp.rfc1910_non_conformant", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Data not conforming to RFC1910", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4069 | { &ei_snmp_rfc3411_non_conformant, { "snmp.rfc3411_non_conformant", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Data not conforming to RFC3411", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4070 | { &ei_snmp_version_unknown, { "snmp.version.unknown", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Unknown version", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4071 | { &ei_snmp_trap_pdu_obsolete, { "snmp.trap_pdu_obsolete", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Trap-PDU is obsolete in this SNMP version", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE , BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE , -1, ((void*)0)}} }},
4072 |
4073 | };
4074 |
4075 | expert_module_t* expert_snmp;
4076 | module_t *snmp_module;
4077 |
4078 | static uat_field_t users_fields[] = {
4079 | UAT_FLD_BUFFER(snmp_users,engine_id,"Engine ID","Engine-id for this entry (empty = any)"){"engine_id", "Engine ID", PT_TXTMOD_HEXBYTES,{0,snmp_users_engine_id_set_cb ,snmp_users_engine_id_tostr_cb},{0,0,0},0,"Engine-id for this entry (empty = any)" ,((void*)0)},
4080 | UAT_FLD_LSTRING(snmp_users,userName,"Username","The username"){"userName", "Username", PT_TXTMOD_STRING,{0,snmp_users_userName_set_cb ,snmp_users_userName_tostr_cb},{0,0,0},0,"The username",((void *)0)},
4081 | UAT_FLD_VS(snmp_users,auth_model,"Authentication model",auth_types,"Algorithm to be used for authentication."){"auth_model", "Authentication model", PT_TXTMOD_ENUM,{uat_fld_chk_enum ,snmp_users_auth_model_set_cb,snmp_users_auth_model_tostr_cb} ,{&(auth_types),&(auth_types),&(auth_types)},& (auth_types),"Algorithm to be used for authentication.",((void *)0)},
4082 | UAT_FLD_LSTRING(snmp_users,authPassword,"Password","The password used for authenticating packets for this entry"){"authPassword", "Password", PT_TXTMOD_STRING,{0,snmp_users_authPassword_set_cb ,snmp_users_authPassword_tostr_cb},{0,0,0},0,"The password used for authenticating packets for this entry" ,((void*)0)},
4083 | UAT_FLD_VS(snmp_users,priv_proto,"Privacy protocol",priv_types,"Algorithm to be used for privacy."){"priv_proto", "Privacy protocol", PT_TXTMOD_ENUM,{uat_fld_chk_enum ,snmp_users_priv_proto_set_cb,snmp_users_priv_proto_tostr_cb} ,{&(priv_types),&(priv_types),&(priv_types)},& (priv_types),"Algorithm to be used for privacy.",((void*)0)},
4084 | UAT_FLD_LSTRING(snmp_users,privPassword,"Privacy password","The password used for encrypting packets for this entry"){"privPassword", "Privacy password", PT_TXTMOD_STRING,{0,snmp_users_privPassword_set_cb ,snmp_users_privPassword_tostr_cb},{0,0,0},0,"The password used for encrypting packets for this entry" ,((void*)0)},
4085 | UAT_FLD_VS(snmp_users,priv_key_exp,"Key expansion method",priv_key_exp_types,"Privacy protocol key expansion method"){"priv_key_exp", "Key expansion method", PT_TXTMOD_ENUM,{uat_fld_chk_enum ,snmp_users_priv_key_exp_set_cb,snmp_users_priv_key_exp_tostr_cb },{&(priv_key_exp_types),&(priv_key_exp_types),&( priv_key_exp_types)},&(priv_key_exp_types),"Privacy protocol key expansion method" ,((void*)0)},
4086 | UAT_END_FIELDS{((void*)0),((void*)0),PT_TXTMOD_NONE,{0,0,0},{0,0,0},0,0,((void *)0)}
4087 | };
4088 |
4089 | uat_t *assocs_uat = uat_new("SNMP Users",
4090 | sizeof(snmp_ue_assoc_t),
4091 | "snmp_users",
4092 | true1,
4093 | &ueas,
4094 | &num_ueas,
4095 | UAT_AFFECTS_DISSECTION0x00000001, /* affects dissection of packets, but not set of named fields */
4096 | "ChSNMPUsersSection",
4097 | snmp_users_copy_cb,
4098 | snmp_users_update_cb,
4099 | snmp_users_free_cb,
4100 | renew_ue_cache,
4101 | NULL((void*)0),
4102 | users_fields);
4103 |
4104 | static const char *assocs_uat_defaults[] = {
4105 | NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0), "draft-reeder-snmpv3-usm-3desede-00"};
4106 | uat_set_default_values(assocs_uat, assocs_uat_defaults);
4107 |
4108 | static uat_field_t specific_traps_flds[] = {
4109 | UAT_FLD_CSTRING(specific_traps,enterprise,"Enterprise OID","Enterprise Object Identifier"){"enterprise", "Enterprise OID", PT_TXTMOD_STRING,{uat_fld_chk_str ,specific_traps_enterprise_set_cb,specific_traps_enterprise_tostr_cb },{0,0,0},0,"Enterprise Object Identifier",((void*)0)},
4110 | UAT_FLD_DEC(specific_traps,trap,"Trap Id","The specific-trap value"){"trap", "Trap Id", PT_TXTMOD_STRING,{uat_fld_chk_num_dec,specific_traps_trap_set_cb ,specific_traps_trap_tostr_cb},{0,0,0},0,"The specific-trap value" ,((void*)0)},
4111 | UAT_FLD_CSTRING(specific_traps,desc,"Description","Trap type description"){"desc", "Description", PT_TXTMOD_STRING,{uat_fld_chk_str,specific_traps_desc_set_cb ,specific_traps_desc_tostr_cb},{0,0,0},0,"Trap type description" ,((void*)0)},
4112 | UAT_END_FIELDS{((void*)0),((void*)0),PT_TXTMOD_NONE,{0,0,0},{0,0,0},0,0,((void *)0)}
4113 | };
4114 |
4115 | uat_t* specific_traps_uat = uat_new("SNMP Enterprise Specific Trap Types",
4116 | sizeof(snmp_st_assoc_t),
4117 | "snmp_specific_traps",
4118 | true1,
4119 | &specific_traps,
4120 | &num_specific_traps,
4121 | UAT_AFFECTS_DISSECTION0x00000001, /* affects dissection of packets, but not set of named fields */
4122 | "ChSNMPEnterpriseSpecificTrapTypes",
4123 | snmp_specific_trap_copy_cb,
4124 | NULL((void*)0),
4125 | snmp_specific_trap_free_cb,
4126 | NULL((void*)0),
4127 | NULL((void*)0),
4128 | specific_traps_flds);
4129 |
4130 | /* Register protocol */
4131 | proto_snmp = proto_register_protocol(PNAME"Simple Network Management Protocol", PSNAME"SNMP", PFNAME"snmp");
4132 | snmp_handle = register_dissector("snmp", dissect_snmp, proto_snmp);
4133 |
4134 | /* Register fields and subtrees */
4135 | proto_register_field_array(proto_snmp, hf, array_length(hf)(sizeof (hf) / sizeof (hf)[0]));
4136 | proto_register_subtree_array(ett, array_length(ett)(sizeof (ett) / sizeof (ett)[0]));
4137 | expert_snmp = expert_register_protocol(proto_snmp);
4138 | expert_register_field_array(expert_snmp, ei, array_length(ei)(sizeof (ei) / sizeof (ei)[0]));
4139 |
4140 | /* Register dissector */
4141 | snmp_tcp_handle = register_dissector("snmp.tcp", dissect_snmp_tcp, proto_snmp);
4142 |
4143 | /* Register configuration preferences */
4144 | snmp_module = prefs_register_protocol(proto_snmp, process_prefs);
4145 | prefs_register_bool_preference(snmp_module, "display_oid",
4146 | "Show SNMP OID in info column",
4147 | "Whether the SNMP OID should be shown in the info column",
4148 | &display_oid);
4149 |
4150 | prefs_register_obsolete_preference(snmp_module, "mib_modules");
4151 | prefs_register_obsolete_preference(snmp_module, "users_file");
4152 |
4153 | prefs_register_bool_preference(snmp_module, "desegment",
4154 | "Reassemble SNMP-over-TCP messages spanning multiple TCP segments",
4155 | "Whether the SNMP dissector should reassemble messages spanning multiple TCP segments."
4156 | " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
4157 | &snmp_desegment);
4158 |
4159 | prefs_register_bool_preference(snmp_module, "var_in_tree",
4160 | "Display dissected variables inside SNMP tree",
4161 | "ON - display dissected variables inside SNMP tree, OFF - display dissected variables in root tree after SNMP",
4162 | &snmp_var_in_tree);
4163 |
4164 | prefs_register_uat_preference(snmp_module, "users_table",
4165 | "Users Table",
4166 | "Table of engine-user associations used for authentication and decryption",
4167 | assocs_uat);
4168 |
4169 | prefs_register_uat_preference(snmp_module, "specific_traps_table",
4170 | "Enterprise Specific Trap Types",
4171 | "Table of enterprise specific-trap type descriptions",
4172 | specific_traps_uat);
4173 |
4174 | #ifdef HAVE_LIBSMI1
4175 | prefs_register_static_text_preference(snmp_module, "info_mibs",
4176 | "MIB settings can be changed in the Name Resolution preferences",
4177 | "MIB settings can be changed in the Name Resolution preferences");
4178 | #endif
4179 |
4180 | value_sub_dissectors_table = register_dissector_table("snmp.variable_oid","SNMP Variable OID", proto_snmp, FT_STRING, STRING_CASE_SENSITIVE0);
4181 |
4182 | register_init_routine(init_ue_cache);
4183 | register_cleanup_routine(cleanup_ue_cache);
4184 |
4185 | register_ber_syntax_dissector("SNMP", proto_snmp, dissect_snmp_tcp);
4186 |
4187 | snmp_tap=register_tap("snmp");
4188 |
4189 | register_srt_table(proto_snmp, NULL((void*)0), 1, snmpstat_packet, snmpstat_init, NULL((void*)0));
4190 | }
4191 |
4192 |
4193 | /*--- proto_reg_handoff_snmp ---------------------------------------*/
4194 | void proto_reg_handoff_snmp(void) {
4195 |
4196 | dissector_add_uint_with_preference("udp.port", UDP_PORT_SNMP161, snmp_handle);
4197 | dissector_add_uint("ethertype", ETHERTYPE_SNMP0x814C, snmp_handle);
4198 | dissector_add_uint("ipx.socket", IPX_SOCKET_SNMP_AGENT0x900F, snmp_handle);
4199 | dissector_add_uint("ipx.socket", IPX_SOCKET_SNMP_SINK0x9010, snmp_handle);
4200 | dissector_add_uint("hpext.dxsap", HPEXT_SNMP0x165A, snmp_handle);
4201 |
4202 | dissector_add_uint_with_preference("tcp.port", TCP_PORT_SNMP161, snmp_tcp_handle);
4203 | /* Since "regular" SNMP port and "trap" SNMP port use the same handler,
4204 | the "trap" port doesn't really need a separate preference. Just register
4205 | normally */
4206 | dissector_add_uint("tcp.port", TCP_PORT_SNMP_TRAP162, snmp_tcp_handle);
4207 | dissector_add_uint("udp.port", UDP_PORT_SNMP_TRAP162, snmp_handle);
4208 | dissector_add_uint("udp.port", UDP_PORT_SNMP_PATROL8161, snmp_handle);
4209 |
4210 | data_handle = find_dissector("data");
4211 |
4212 | /* SNMPv2-MIB sysDescr "1.3.6.1.2.1.1.1.0" */
4213 | dissector_add_string("snmp.variable_oid", "1.3.6.1.2.1.1.1.0",
4214 | create_dissector_handle(dissect_snmp_variable_string, proto_snmp));
4215 | /* SNMPv2-MIB::sysName.0 (1.3.6.1.2.1.1.5.0) */
4216 | dissector_add_string("snmp.variable_oid", "1.3.6.1.2.1.1.5.0",
4217 | create_dissector_handle(dissect_snmp_variable_string, proto_snmp));
4218 |
4219 | /*
4220 | * Process preference settings.
4221 | *
4222 | * We can't do this in the register routine, as preferences aren't
4223 | * read until all dissector register routines have been called (so
4224 | * that all dissector preferences have been registered).
4225 | */
4226 | process_prefs();
4227 |
4228 | }
4229 |
4230 | void
4231 | proto_register_smux(void)
4232 | {
4233 | static int *ett[] = {
4234 | &ett_smux,
4235 | };
4236 |
4237 | proto_smux = proto_register_protocol("SNMP Multiplex Protocol",
4238 | "SMUX", "smux");
4239 |
4240 | proto_register_subtree_array(ett, array_length(ett)(sizeof (ett) / sizeof (ett)[0]));
4241 |
4242 | smux_handle = register_dissector("smux", dissect_smux, proto_smux);
4243 | }
4244 |
4245 | void
4246 | proto_reg_handoff_smux(void)
4247 | {
4248 | dissector_add_uint_with_preference("tcp.port", TCP_PORT_SMUX199, smux_handle);
4249 | }
4250 |
4251 | /*
4252 | * Editor modelines - https://www.wireshark.org/tools/modelines.html
4253 | *
4254 | * Local variables:
4255 | * c-basic-offset: 8
4256 | * tab-width: 8
4257 | * indent-tabs-mode: t
4258 | * End:
4259 | *
4260 | * vi: set shiftwidth=8 tabstop=8 noexpandtab:
4261 | * :indentSize=8:tabSize=8:noTabs=false:
4262 | */