+/* Do not modify this file. */
+/* It is created automatically by the ASN.1 to Wireshark dissector compiler */
+/* packet-snmp.c */
+/* ../../tools/asn2wrs.py -b -p snmp -c ./snmp.cnf -s ./packet-snmp-template -D . -O ../../epan/dissectors snmp.asn */
+
+/* Input file: packet-snmp-template.c */
+
+#line 1 "../../asn1/snmp/packet-snmp-template.c"
/* packet-snmp.c
* Routines for SNMP (simple network management protocol)
* Copyright (C) 1998 Didier Jorand
* See RFCs 1905, 1906, 1909, and 1910 for SNMPv2u [historic].
*
* See RFCs 2570-2576 for SNMPv3
+ * Updated to use the asn2wrs compiler made by Tomas Kukosa
+ * Copyright (C) 2005 - 2006 Anders Broman [AT] ericsson.com
+ *
+ * See RFC 3414 for User-based Security Model for SNMPv3
+ * See RFC 3826 for (AES) Cipher Algorithm in the SNMP USM
+ * See RFC 2578 for Structure of Management Information Version 2 (SMIv2)
+ * Copyright (C) 2007 Luis E. Garcia Ontanon <luis@ontanon.org>
*
* $Id$
*
- * Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@ethereal.com>
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Some stuff from:
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#define D(args) do {printf args; fflush(stdout); } while(0)
+
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
-#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <glib.h>
-#include "isprint.h"
-
#include <epan/packet.h>
#include <epan/strutil.h>
#include <epan/conversation.h>
-#include "etypes.h"
+#include <epan/etypes.h>
#include <epan/prefs.h>
+#include <epan/sminmpec.h>
+#include <epan/emem.h>
+#include <epan/next_tvb.h>
+#include <epan/uat.h>
+#include <epan/asn1.h>
#include "packet-ipx.h"
#include "packet-hpext.h"
-#include "packet-frame.h"
-
-#ifdef HAVE_SOME_SNMP
-
-#ifdef HAVE_NET_SNMP
-# include <net-snmp/net-snmp-config.h>
-# include <net-snmp/mib_api.h>
-# include <net-snmp/library/default_store.h>
-# include <net-snmp/config_api.h>
-#else /* HAVE_NET_SNMP */
-# include <ucd-snmp/ucd-snmp-config.h>
-# include <ucd-snmp/asn1.h>
-# include <ucd-snmp/snmp_api.h>
-# include <ucd-snmp/snmp_impl.h>
-# include <ucd-snmp/mib.h>
-# include <ucd-snmp/default_store.h>
-# include <ucd-snmp/read_config.h>
-# include <ucd-snmp/tools.h>
-#endif /* HAVE_NET_SNMP */
-
-#ifndef NETSNMP_DS_LIBRARY_ID
-# define NETSNMP_DS_LIBRARY_ID DS_LIBRARY_ID
-# define NETSNMP_DS_LIB_NO_TOKEN_WARNINGS DS_LIB_NO_TOKEN_WARNINGS
-# define NETSNMP_DS_LIB_PRINT_SUFFIX_ONLY DS_LIB_PRINT_SUFFIX_ONLY
-# define netsnmp_ds_set_boolean ds_set_boolean
-# define netsnmp_ds_set_int ds_set_int
-#endif
-#ifdef _WIN32
-# include <epan/filesystem.h>
-#endif /* _WIN32 */
-
- /*
- * Define values "sprint_realloc_value()" expects.
- */
-# define VALTYPE_INTEGER ASN_INTEGER
-# define VALTYPE_COUNTER ASN_COUNTER
-# define VALTYPE_GAUGE ASN_GAUGE
-# define VALTYPE_TIMETICKS ASN_TIMETICKS
-# define VALTYPE_STRING ASN_OCTET_STR
-# define VALTYPE_IPADDR ASN_IPADDRESS
-# define VALTYPE_OPAQUE ASN_OPAQUE
-# define VALTYPE_NSAP ASN_NSAP
-# define VALTYPE_OBJECTID ASN_OBJECT_ID
-# define VALTYPE_BITSTR ASN_BIT_STR
-# define VALTYPE_COUNTER64 ASN_COUNTER64
-
-#endif /* HAVE_SOME_SNMP */
-
-#include "asn1.h"
+
+#include "packet-ber.h"
#include "packet-snmp.h"
-#include "format-oid.h"
+
+#include <epan/crypt/crypt-sha1.h>
+#include <epan/crypt/crypt-md5.h>
+#include <epan/expert.h>
+#include <epan/report_err.h>
+#include <epan/oids.h>
+
+
+#ifdef HAVE_LIBGCRYPT
+#include <gcrypt.h>
+#endif
/* Take a pointer that may be null and return a pointer that's not null
by turning null pointers into pointers to the above null string,
non-printable characters in the string by escaping them. */
#define SAFE_STRING(s, l) (((s) != NULL) ? format_text((s), (l)) : "")
-static int proto_snmp = -1;
-
-/* Default MIB modules to load */
-#define DEF_MIB_MODULES "IP-MIB:IF-MIB:TCP-MIB:UDP-MIB:SNMPv2-MIB:RFC1213-MIB:UCD-SNMP-MIB"
-
-static gchar *mib_modules = DEF_MIB_MODULES;
-static gboolean display_oid = TRUE;
-
-/* Subdissector tables */
-static dissector_table_t variable_oid_dissector_table;
+#define PNAME "Simple Network Management Protocol"
+#define PSNAME "SNMP"
+#define PFNAME "snmp"
-static gint ett_snmp = -1;
-static gint ett_parameters = -1;
-static gint ett_parameters_qos = -1;
-static gint ett_global = -1;
-static gint ett_flags = -1;
-static gint ett_secur = -1;
-
-static int hf_snmp_version = -1;
-static int hf_snmp_community = -1;
-static int hf_snmp_request_id = -1;
-static int hf_snmp_pdutype = -1;
-static int hf_snmp_agent = -1;
-static int hf_snmp_enterprise = -1;
-static int hf_snmp_error_status = -1;
-static int hf_snmp_oid = -1;
-static int hf_snmp_traptype = -1;
-static int hf_snmp_spectraptype = -1;
-static int hf_snmp_timestamp = -1;
-static int hf_snmpv3_flags = -1;
-static int hf_snmpv3_flags_auth = -1;
-static int hf_snmpv3_flags_crypt = -1;
-static int hf_snmpv3_flags_report = -1;
+#define UDP_PORT_SNMP 161
+#define UDP_PORT_SNMP_TRAP 162
+#define TCP_PORT_SNMP 161
+#define TCP_PORT_SNMP_TRAP 162
+#define TCP_PORT_SMUX 199
+#define UDP_PORT_SNMP_PATROL 8161
+/* Initialize the protocol and registered fields */
+static int proto_snmp = -1;
static int proto_smux = -1;
-static gint ett_smux = -1;
+static gboolean display_oid = TRUE;
+static gboolean snmp_var_in_tree = TRUE;
-static int hf_smux_version = -1;
-static int hf_smux_pdutype = -1;
+static gboolean snmp_usm_auth_md5(snmp_usm_params_t* p, guint8**, guint*, gchar const**);
+static gboolean snmp_usm_auth_sha1(snmp_usm_params_t* p, guint8**, guint*, gchar const**);
-/* desegmentation of SNMP-over-TCP */
-static gboolean snmp_desegment = TRUE;
+static tvbuff_t* snmp_usm_priv_des(snmp_usm_params_t*, tvbuff_t*, gchar const**);
+static tvbuff_t* snmp_usm_priv_aes(snmp_usm_params_t*, tvbuff_t*, gchar const**);
-static dissector_handle_t snmp_handle;
-static dissector_handle_t data_handle;
-#define TH_AUTH 0x01
-#define TH_CRYPT 0x02
-#define TH_REPORT 0x04
+static void snmp_usm_password_to_key_md5(const guint8 *password, guint passwordlen, const guint8 *engineID, guint engineLength, guint8 *key);
+static void snmp_usm_password_to_key_sha1(const guint8 *password, guint passwordlen, const guint8 *engineID, guint engineLength, guint8 *key);
-#define UDP_PORT_SNMP 161
-#define UDP_PORT_SNMP_TRAP 162
-#define TCP_PORT_SNMP 161
-#define TCP_PORT_SNMP_TRAP 162
-#define TCP_PORT_SMUX 199
-/* Protocol version numbers */
-#define SNMP_VERSION_1 0
-#define SNMP_VERSION_2c 1
-#define SNMP_VERSION_2u 2
-#define SNMP_VERSION_3 3
-
-static const value_string versions[] = {
- { SNMP_VERSION_1, "1" },
- { SNMP_VERSION_2c, "2C" },
- { SNMP_VERSION_2u, "2U" },
- { SNMP_VERSION_3, "3" },
- { 0, NULL },
-};
+static snmp_usm_auth_model_t model_md5 = {snmp_usm_password_to_key_md5, snmp_usm_auth_md5, 16};
+static snmp_usm_auth_model_t model_sha1 = {snmp_usm_password_to_key_sha1, snmp_usm_auth_sha1, 20};
-/* defined in net-SNMP; include/net-snmp/library/snmp.h */
-#undef SNMP_MSG_GET
-#undef SNMP_MSG_SET
-#undef SNMP_MSG_GETNEXT
-#undef SNMP_MSG_RESPONSE
-#undef SNMP_MSG_TRAP
-#undef SNMP_MSG_GETBULK
-#undef SNMP_MSG_INFORM
-#undef SNMP_MSG_TRAP2
-#undef SNMP_MSG_REPORT
-#undef SNMP_NOSUCHOBJECT
-#undef SNMP_NOSUCHINSTANCE
-#undef SNMP_ENDOFMIBVIEW
-
-/* PDU types */
-#define SNMP_MSG_GET 0
-#define SNMP_MSG_GETNEXT 1
-#define SNMP_MSG_RESPONSE 2
-#define SNMP_MSG_SET 3
-#define SNMP_MSG_TRAP 4
-
-#define SNMP_MSG_GETBULK 5
-#define SNMP_MSG_INFORM 6
-#define SNMP_MSG_TRAP2 7
-#define SNMP_MSG_REPORT 8
-
-static const value_string pdu_types[] = {
- { SNMP_MSG_GET, "GET" },
- { SNMP_MSG_GETNEXT, "GET-NEXT" },
- { SNMP_MSG_SET, "SET" },
- { SNMP_MSG_RESPONSE, "RESPONSE" },
- { SNMP_MSG_TRAP, "TRAP-V1" },
- { SNMP_MSG_GETBULK, "GETBULK" },
- { SNMP_MSG_INFORM, "INFORM" },
- { SNMP_MSG_TRAP2, "TRAP-V2" },
- { SNMP_MSG_REPORT, "REPORT" },
- { 0, NULL }
+static const value_string auth_types[] = {
+ {0,"MD5"},
+ {1,"SHA1"},
+ {0,NULL}
};
+static snmp_usm_auth_model_t* auth_models[] = {&model_md5,&model_sha1};
-/* SMUX PDU types */
-#define SMUX_MSG_OPEN 0
-#define SMUX_MSG_CLOSE 1
-#define SMUX_MSG_RREQ 2
-#define SMUX_MSG_RRSP 3
-#define SMUX_MSG_SOUT 4
-static const value_string smux_types[] = {
- { SMUX_MSG_OPEN, "Open" },
- { SMUX_MSG_CLOSE, "Close" },
- { SMUX_MSG_RREQ, "Registration Request" },
- { SMUX_MSG_RRSP, "Registration Response" },
- { SMUX_MSG_SOUT, "Commit Or Rollback" },
- { 0, NULL }
+static const value_string priv_types[] = {
+ {0,"DES"},
+ {1,"AES"},
+ {0,NULL}
};
+static snmp_usm_decoder_t priv_protos[] = {snmp_usm_priv_des, snmp_usm_priv_aes};
-/* SMUX Closing causes */
-#define SMUX_CLOSE_DOWN 0
-#define SMUX_CLOSE_VERSION 1
-#define SMUX_CLOSE_PACKET 2
-#define SMUX_CLOSE_PROTOCOL 3
-#define SMUX_CLOSE_INTERNAL 4
-#define SMUX_CLOSE_NOAUTH 5
-
-static const value_string smux_close[] = {
- { SMUX_CLOSE_DOWN, "Going down" },
- { SMUX_CLOSE_VERSION, "Unsupported Version" },
- { SMUX_CLOSE_PACKET, "Packet Format Error" },
- { SMUX_CLOSE_PROTOCOL, "Protocol Error" },
- { SMUX_CLOSE_INTERNAL, "Internal Error" },
- { SMUX_CLOSE_NOAUTH, "Unauthorized" },
- { 0, NULL }
-};
+static snmp_ue_assoc_t* ueas = NULL;
+static guint num_ueas = 0;
+static snmp_ue_assoc_t* localized_ues = NULL;
+static snmp_ue_assoc_t* unlocalized_ues = NULL;
+/****/
-/* SMUX Request codes */
-#define SMUX_RREQ_DELETE 0
-#define SMUX_RREQ_READONLY 1
-#define SMUX_RREQ_READWRITE 2
+/* Variabled used for handling enterprise spesific trap types */
+typedef struct _snmp_st_assoc_t {
+ char *enterprise;
+ guint trap;
+ char *desc;
+} snmp_st_assoc_t;
+static guint num_specific_traps = 0;
+static snmp_st_assoc_t *specific_traps = NULL;
+static const char *enterprise_oid = NULL;
+static guint generic_trap = 0;
-static const value_string smux_rreq[] = {
- { SMUX_RREQ_DELETE, "Delete" },
- { SMUX_RREQ_READONLY, "Read Only" },
- { SMUX_RREQ_READWRITE, "Read Write" },
- { 0, NULL }
-};
-static const value_string smux_prio[] = {
- { -1, "Failure" },
- { 0, NULL }
-};
+static snmp_usm_params_t usm_p = {FALSE,FALSE,0,0,0,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,FALSE};
-/* SMUX SOut codes */
-#define SMUX_SOUT_COMMIT 0
-#define SMUX_SOUT_ROLLBACK 1
+#define TH_AUTH 0x01
+#define TH_CRYPT 0x02
+#define TH_REPORT 0x04
-static const value_string smux_sout[] = {
- { SMUX_SOUT_COMMIT, "Commit" },
- { SMUX_SOUT_ROLLBACK, "Rollback" },
- { 0, NULL }
-};
+/* desegmentation of SNMP-over-TCP */
+static gboolean snmp_desegment = TRUE;
-/* Error status values */
-#ifndef SNMP_ERR_NOERROR
-#define SNMP_ERR_NOERROR 0
-#endif
-#ifndef SNMP_ERR_TOOBIG
-#define SNMP_ERR_TOOBIG 1
-#endif
-#ifndef SNMP_ERR_NOSUCHNAME
-#define SNMP_ERR_NOSUCHNAME 2
-#endif
-#ifndef SNMP_ERR_BADVALUE
-#define SNMP_ERR_BADVALUE 3
-#endif
-#ifndef SNMP_ERR_READONLY
-#define SNMP_ERR_READONLY 4
-#endif
-#ifndef SNMP_ERR_GENERR
-#define SNMP_ERR_GENERR 5
-#endif
-#ifndef SNMP_ERR_NOACCESS
-#define SNMP_ERR_NOACCESS 6
-#endif
-#ifndef SNMP_ERR_WRONGTYPE
-#define SNMP_ERR_WRONGTYPE 7
-#endif
-#ifndef SNMP_ERR_WRONGLENGTH
-#define SNMP_ERR_WRONGLENGTH 8
-#endif
-#ifndef SNMP_ERR_WRONGENCODING
-#define SNMP_ERR_WRONGENCODING 9
-#endif
-#ifndef SNMP_ERR_WRONGVALUE
-#define SNMP_ERR_WRONGVALUE 10
-#endif
-#ifndef SNMP_ERR_NOCREATION
-#define SNMP_ERR_NOCREATION 11
-#endif
-#ifndef SNMP_ERR_INCONSISTENTVALUE
-#define SNMP_ERR_INCONSISTENTVALUE 12
-#endif
-#ifndef SNMP_ERR_RESOURCEUNAVAILABLE
-#define SNMP_ERR_RESOURCEUNAVAILABLE 13
-#endif
-#ifndef SNMP_ERR_COMMITFAILED
-#define SNMP_ERR_COMMITFAILED 14
-#endif
-#ifndef SNMP_ERR_UNDOFAILED
-#define SNMP_ERR_UNDOFAILED 15
-#endif
-#ifndef SNMP_ERR_AUTHORIZATIONERROR
-#define SNMP_ERR_AUTHORIZATIONERROR 16
-#endif
-#ifndef SNMP_ERR_NOTWRITABLE
-#define SNMP_ERR_NOTWRITABLE 17
-#endif
-#ifndef SNMP_ERR_INCONSISTENTNAME
-#define SNMP_ERR_INCONSISTENTNAME 18
-#endif
+/* Global variables */
-static const value_string error_statuses[] = {
- { SNMP_ERR_NOERROR, "NO ERROR" },
- { SNMP_ERR_TOOBIG, "TOOBIG" },
- { SNMP_ERR_NOSUCHNAME, "NO SUCH NAME" },
- { SNMP_ERR_BADVALUE, "BAD VALUE" },
- { SNMP_ERR_READONLY, "READ ONLY" },
- { SNMP_ERR_GENERR, "GENERIC ERROR" },
- { SNMP_ERR_NOACCESS, "NO ACCESS" },
- { SNMP_ERR_WRONGTYPE, "WRONG TYPE" },
- { SNMP_ERR_WRONGLENGTH, "WRONG LENGTH" },
- { SNMP_ERR_WRONGENCODING, "WRONG ENCODING" },
- { SNMP_ERR_WRONGVALUE, "WRONG VALUE" },
- { SNMP_ERR_NOCREATION, "NO CREATION" },
- { SNMP_ERR_INCONSISTENTVALUE, "INCONSISTENT VALUE" },
- { SNMP_ERR_RESOURCEUNAVAILABLE, "RESOURCE UNAVAILABLE" },
- { SNMP_ERR_COMMITFAILED, "COMMIT FAILED" },
- { SNMP_ERR_UNDOFAILED, "UNDO FAILED" },
- { SNMP_ERR_AUTHORIZATIONERROR, "AUTHORIZATION ERROR" },
- { SNMP_ERR_NOTWRITABLE, "NOT WRITABLE" },
- { SNMP_ERR_INCONSISTENTNAME, "INCONSISTENT NAME" },
- { 0, NULL }
-};
+guint32 MsgSecurityModel;
+tvbuff_t *oid_tvb=NULL;
+tvbuff_t *value_tvb=NULL;
-/* General SNMP V1 Traps */
+static dissector_handle_t snmp_handle;
+static dissector_handle_t data_handle;
-#ifndef SNMP_TRAP_COLDSTART
-#define SNMP_TRAP_COLDSTART 0
-#endif
-#ifndef SNMP_TRAP_WARMSTART
-#define SNMP_TRAP_WARMSTART 1
-#endif
-#ifndef SNMP_TRAP_LINKDOWN
-#define SNMP_TRAP_LINKDOWN 2
-#endif
-#ifndef SNMP_TRAP_LINKUP
-#define SNMP_TRAP_LINKUP 3
-#endif
-#ifndef SNMP_TRAP_AUTHFAIL
-#define SNMP_TRAP_AUTHFAIL 4
-#endif
-#ifndef SNMP_TRAP_EGPNEIGHBORLOSS
-#define SNMP_TRAP_EGPNEIGHBORLOSS 5
-#endif
-#ifndef SNMP_TRAP_ENTERPRISESPECIFIC
-#define SNMP_TRAP_ENTERPRISESPECIFIC 6
-#endif
+static next_tvb_list_t var_list;
+
+static int hf_snmp_v3_flags_auth = -1;
+static int hf_snmp_v3_flags_crypt = -1;
+static int hf_snmp_v3_flags_report = -1;
+
+static int hf_snmp_engineid_conform = -1;
+static int hf_snmp_engineid_enterprise = -1;
+static int hf_snmp_engineid_format = -1;
+static int hf_snmp_engineid_ipv4 = -1;
+static int hf_snmp_engineid_ipv6 = -1;
+static int hf_snmp_engineid_cisco_type = -1;
+static int hf_snmp_engineid_mac = -1;
+static int hf_snmp_engineid_text = -1;
+static int hf_snmp_engineid_time = -1;
+static int hf_snmp_engineid_data = -1;
+static int hf_snmp_decryptedPDU = -1;
+static int hf_snmp_msgAuthentication = -1;
+
+static int hf_snmp_noSuchObject = -1;
+static int hf_snmp_noSuchInstance = -1;
+static int hf_snmp_endOfMibView = -1;
+static int hf_snmp_unSpecified = -1;
+
+static int hf_snmp_integer32_value = -1;
+static int hf_snmp_octetstring_value = -1;
+static int hf_snmp_oid_value = -1;
+static int hf_snmp_null_value = -1;
+static int hf_snmp_ipv4_value = -1;
+static int hf_snmp_ipv6_value = -1;
+static int hf_snmp_anyaddress_value = -1;
+static int hf_snmp_unsigned32_value = -1;
+static int hf_snmp_unknown_value = -1;
+static int hf_snmp_opaque_value = -1;
+static int hf_snmp_nsap_value = -1;
+static int hf_snmp_counter_value = -1;
+static int hf_snmp_timeticks_value = -1;
+static int hf_snmp_big_counter_value = -1;
+static int hf_snmp_gauge32_value = -1;
+
+static int hf_snmp_objectname = -1;
+static int hf_snmp_scalar_instance_index = -1;
+
+
+
+/*--- Included file: packet-snmp-hf.c ---*/
+#line 1 "../../asn1/snmp/packet-snmp-hf.c"
+static int hf_snmp_SMUX_PDUs_PDU = -1; /* SMUX_PDUs */
+static int hf_snmp_version = -1; /* Version */
+static int hf_snmp_community = -1; /* Community */
+static int hf_snmp_data = -1; /* PDUs */
+static int hf_snmp_parameters = -1; /* OCTET_STRING */
+static int hf_snmp_datav2u = -1; /* T_datav2u */
+static int hf_snmp_v2u_plaintext = -1; /* PDUs */
+static int hf_snmp_encrypted = -1; /* OCTET_STRING */
+static int hf_snmp_msgAuthoritativeEngineID = -1; /* T_msgAuthoritativeEngineID */
+static int hf_snmp_msgAuthoritativeEngineBoots = -1; /* T_msgAuthoritativeEngineBoots */
+static int hf_snmp_msgAuthoritativeEngineTime = -1; /* T_msgAuthoritativeEngineTime */
+static int hf_snmp_msgUserName = -1; /* T_msgUserName */
+static int hf_snmp_msgAuthenticationParameters = -1; /* T_msgAuthenticationParameters */
+static int hf_snmp_msgPrivacyParameters = -1; /* T_msgPrivacyParameters */
+static int hf_snmp_msgVersion = -1; /* Version */
+static int hf_snmp_msgGlobalData = -1; /* HeaderData */
+static int hf_snmp_msgSecurityParameters = -1; /* T_msgSecurityParameters */
+static int hf_snmp_msgData = -1; /* ScopedPduData */
+static int hf_snmp_msgID = -1; /* INTEGER_0_2147483647 */
+static int hf_snmp_msgMaxSize = -1; /* INTEGER_484_2147483647 */
+static int hf_snmp_msgFlags = -1; /* T_msgFlags */
+static int hf_snmp_msgSecurityModel = -1; /* T_msgSecurityModel */
+static int hf_snmp_plaintext = -1; /* ScopedPDU */
+static int hf_snmp_encryptedPDU = -1; /* T_encryptedPDU */
+static int hf_snmp_contextEngineID = -1; /* SnmpEngineID */
+static int hf_snmp_contextName = -1; /* OCTET_STRING */
+static int hf_snmp_get_request = -1; /* GetRequest_PDU */
+static int hf_snmp_get_next_request = -1; /* GetNextRequest_PDU */
+static int hf_snmp_get_response = -1; /* GetResponse_PDU */
+static int hf_snmp_set_request = -1; /* SetRequest_PDU */
+static int hf_snmp_trap = -1; /* Trap_PDU */
+static int hf_snmp_getBulkRequest = -1; /* GetBulkRequest_PDU */
+static int hf_snmp_informRequest = -1; /* InformRequest_PDU */
+static int hf_snmp_snmpV2_trap = -1; /* SNMPv2_Trap_PDU */
+static int hf_snmp_report = -1; /* Report_PDU */
+static int hf_snmp_request_id = -1; /* INTEGER */
+static int hf_snmp_error_status = -1; /* T_error_status */
+static int hf_snmp_error_index = -1; /* INTEGER */
+static int hf_snmp_variable_bindings = -1; /* VarBindList */
+static int hf_snmp_bulkPDU_request_id = -1; /* Integer32 */
+static int hf_snmp_non_repeaters = -1; /* INTEGER_0_2147483647 */
+static int hf_snmp_max_repetitions = -1; /* INTEGER_0_2147483647 */
+static int hf_snmp_enterprise = -1; /* EnterpriseOID */
+static int hf_snmp_agent_addr = -1; /* NetworkAddress */
+static int hf_snmp_generic_trap = -1; /* GenericTrap */
+static int hf_snmp_specific_trap = -1; /* SpecificTrap */
+static int hf_snmp_time_stamp = -1; /* TimeTicks */
+static int hf_snmp_name = -1; /* ObjectName */
+static int hf_snmp_valueType = -1; /* NULL */
+static int hf_snmp_VarBindList_item = -1; /* VarBind */
+static int hf_snmp_open = -1; /* OpenPDU */
+static int hf_snmp_close = -1; /* ClosePDU */
+static int hf_snmp_registerRequest = -1; /* RReqPDU */
+static int hf_snmp_registerResponse = -1; /* RegisterResponse */
+static int hf_snmp_commitOrRollback = -1; /* SOutPDU */
+static int hf_snmp_rRspPDU = -1; /* RRspPDU */
+static int hf_snmp_pDUs = -1; /* PDUs */
+static int hf_snmp_smux_simple = -1; /* SimpleOpen */
+static int hf_snmp_smux_version = -1; /* T_smux_version */
+static int hf_snmp_identity = -1; /* OBJECT_IDENTIFIER */
+static int hf_snmp_description = -1; /* DisplayString */
+static int hf_snmp_password = -1; /* OCTET_STRING */
+static int hf_snmp_subtree = -1; /* ObjectName */
+static int hf_snmp_priority = -1; /* INTEGER_M1_2147483647 */
+static int hf_snmp_operation = -1; /* T_operation */
+
+/*--- End of included file: packet-snmp-hf.c ---*/
+#line 221 "../../asn1/snmp/packet-snmp-template.c"
-static const value_string trap_types[] = {
- { SNMP_TRAP_COLDSTART, "COLD START" },
- { SNMP_TRAP_WARMSTART, "WARM START" },
- { SNMP_TRAP_LINKDOWN, "LINK DOWN" },
- { SNMP_TRAP_LINKUP, "LINK UP" },
- { SNMP_TRAP_AUTHFAIL, "AUTHENTICATION FAILED" },
- { SNMP_TRAP_EGPNEIGHBORLOSS, "EGP NEIGHBORLOSS" },
- { SNMP_TRAP_ENTERPRISESPECIFIC, "ENTERPRISE SPECIFIC" },
- { 0, NULL }
+static int hf_smux_version = -1;
+static int hf_smux_pdutype = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_smux = -1;
+static gint ett_snmp = -1;
+static gint ett_engineid = -1;
+static gint ett_msgFlags = -1;
+static gint ett_encryptedPDU = -1;
+static gint ett_decrypted = -1;
+static gint ett_authParameters = -1;
+static gint ett_internet = -1;
+static gint ett_varbind = -1;
+static gint ett_name = -1;
+static gint ett_value = -1;
+static gint ett_decoding_error = -1;
+
+
+/*--- Included file: packet-snmp-ett.c ---*/
+#line 1 "../../asn1/snmp/packet-snmp-ett.c"
+static gint ett_snmp_Message = -1;
+static gint ett_snmp_Messagev2u = -1;
+static gint ett_snmp_T_datav2u = -1;
+static gint ett_snmp_UsmSecurityParameters = -1;
+static gint ett_snmp_SNMPv3Message = -1;
+static gint ett_snmp_HeaderData = -1;
+static gint ett_snmp_ScopedPduData = -1;
+static gint ett_snmp_ScopedPDU = -1;
+static gint ett_snmp_PDUs = -1;
+static gint ett_snmp_PDU = -1;
+static gint ett_snmp_BulkPDU = -1;
+static gint ett_snmp_Trap_PDU_U = -1;
+static gint ett_snmp_VarBind = -1;
+static gint ett_snmp_VarBindList = -1;
+static gint ett_snmp_SMUX_PDUs = -1;
+static gint ett_snmp_RegisterResponse = -1;
+static gint ett_snmp_OpenPDU = -1;
+static gint ett_snmp_SimpleOpen_U = -1;
+static gint ett_snmp_RReqPDU_U = -1;
+
+/*--- End of included file: packet-snmp-ett.c ---*/
+#line 240 "../../asn1/snmp/packet-snmp-template.c"
+
+static const true_false_string auth_flags = {
+ "OK",
+ "Failed"
};
/* Security Models */
#define SNMP_SEC_ANY 0
-#define SNMP_SEC_V1 1
+#define SNMP_SEC_V1 1
#define SNMP_SEC_V2C 2
#define SNMP_SEC_USM 3
{ 0, NULL }
};
-/* SNMP Tags */
+/* SMUX PDU types */
+#define SMUX_MSG_OPEN 0
+#define SMUX_MSG_CLOSE 1
+#define SMUX_MSG_RREQ 2
+#define SMUX_MSG_RRSP 3
+#define SMUX_MSG_SOUT 4
+
+static const value_string smux_types[] = {
+ { SMUX_MSG_OPEN, "Open" },
+ { SMUX_MSG_CLOSE, "Close" },
+ { SMUX_MSG_RREQ, "Registration Request" },
+ { SMUX_MSG_RRSP, "Registration Response" },
+ { SMUX_MSG_SOUT, "Commit Or Rollback" },
+ { 0, NULL }
+};
+
#define SNMP_IPA 0 /* IP Address */
#define SNMP_CNT 1 /* Counter (Counter32) */
#define SERR_NSI 1
#define SERR_EOM 2
-/* SNMPv1 Types */
-
-#define SNMP_NULL 0
-#define SNMP_INTEGER 1 /* l */
-#define SNMP_OCTETSTR 2 /* c */
-#define SNMP_DISPLAYSTR 2 /* c */
-#define SNMP_OBJECTID 3 /* ul */
-#define SNMP_IPADDR 4 /* uc */
-#define SNMP_COUNTER 5 /* ul */
-#define SNMP_GAUGE 6 /* ul */
-#define SNMP_TIMETICKS 7 /* ul */
-#define SNMP_OPAQUE 8 /* c */
-
-/* additional SNMPv2 Types */
-#define SNMP_UINTEGER 5 /* ul */
-#define SNMP_BITSTR 9 /* uc */
-#define SNMP_NSAP 10 /* uc */
-#define SNMP_COUNTER64 11 /* ul */
-#define SNMP_NOSUCHOBJECT 12
-#define SNMP_NOSUCHINSTANCE 13
-#define SNMP_ENDOFMIBVIEW 14
+dissector_table_t value_sub_dissectors_table;
-typedef struct _SNMP_CNV SNMP_CNV;
-struct _SNMP_CNV
+static const gchar *
+snmp_lookup_specific_trap (guint specific_trap)
{
- guint class;
- guint tag;
- gint syntax;
- gchar *name;
-};
+ guint i;
-static SNMP_CNV SnmpCnv [] =
-{
- {ASN1_UNI, ASN1_NUL, SNMP_NULL, "NULL"},
- {ASN1_UNI, ASN1_INT, SNMP_INTEGER, "INTEGER"},
- {ASN1_UNI, ASN1_OTS, SNMP_OCTETSTR, "OCTET STRING"},
- {ASN1_UNI, ASN1_OJI, SNMP_OBJECTID, "OBJECTID"},
- {ASN1_APL, SNMP_IPA, SNMP_IPADDR, "IPADDR"},
- {ASN1_APL, SNMP_CNT, SNMP_COUNTER, "COUNTER"}, /* Counter32 */
- {ASN1_APL, SNMP_GGE, SNMP_GAUGE, "GAUGE"}, /* Gauge32 == Unsigned32 */
- {ASN1_APL, SNMP_TIT, SNMP_TIMETICKS, "TIMETICKS"},
- {ASN1_APL, SNMP_OPQ, SNMP_OPAQUE, "OPAQUE"},
-
-/* SNMPv2 data types and errors */
-
- {ASN1_UNI, ASN1_BTS, SNMP_BITSTR, "BITSTR"},
- {ASN1_APL, SNMP_C64, SNMP_COUNTER64, "COUNTER64"},
- {ASN1_CTX, SERR_NSO, SNMP_NOSUCHOBJECT, "NOSUCHOBJECT"},
- {ASN1_CTX, SERR_NSI, SNMP_NOSUCHINSTANCE, "NOSUCHINSTANCE"},
- {ASN1_CTX, SERR_EOM, SNMP_ENDOFMIBVIEW, "ENDOFMIBVIEW"},
- {0, 0, -1, NULL}
-};
+ for (i = 0; i < num_specific_traps; i++) {
+ snmp_st_assoc_t *u = &(specific_traps[i]);
-/*
- * NAME: g_snmp_tag_cls2syntax
- * SYNOPSIS: gboolean g_snmp_tag_cls2syntax
- * (
- * guint tag,
- * guint cls,
- * gushort *syntax
- * )
- * DESCRIPTION: Converts ASN1 tag and class to Syntax tag and name.
- * See SnmpCnv for conversion.
- * RETURNS: name on success, NULL on failure
- */
+ if ((u->trap == specific_trap) &&
+ (strcmp (u->enterprise, enterprise_oid) == 0))
+ {
+ return u->desc;
+ }
+ }
-static gchar *
-snmp_tag_cls2syntax ( guint tag, guint cls, gushort *syntax)
-{
- SNMP_CNV *cnv;
-
- cnv = SnmpCnv;
- while (cnv->syntax != -1)
- {
- if (cnv->tag == tag && cnv->class == cls)
- {
- *syntax = cnv->syntax;
- return cnv->name;
- }
- cnv++;
- }
- return NULL;
+ return NULL;
}
-static void
-dissect_snmp_parse_error(tvbuff_t *tvb, int offset, packet_info *pinfo,
- proto_tree *tree, const char *field_name, int ret)
-{
- char *errstr;
-
- errstr = asn1_err_to_str(ret);
+/*
+ * dissect_snmp_VarBind
+ * this routine dissects variable bindings, looking for the oid information in our oid reporsitory
+ * to format and add the value adequatelly.
+ *
+ * The choice to handwrite this code instead of using the asn compiler is to avoid having tons
+ * of uses of global variables distributed in very different parts of the code.
+ * Other than that there's a cosmetic thing: the tree from ASN generated code would be so
+ * convoluted due to the nesting of CHOICEs in the definition of VarBind/value.
+ *
+ * XXX: the length of this function (~400 lines) is an aberration!
+ * oid_key_t:key_type could become a series of callbacks instead of an enum
+ * the (! oid_info_is_ok) switch could be made into an array (would be slower)
+ *
- if (check_col(pinfo->cinfo, COL_INFO)) {
- col_add_fstr(pinfo->cinfo, COL_INFO,
- "ERROR: Couldn't parse %s: %s", field_name, errstr);
+ NetworkAddress ::= CHOICE { internet IpAddress }
+ IpAddress ::= [APPLICATION 0] IMPLICIT OCTET STRING (SIZE (4))
+ TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
+ Integer32 ::= INTEGER (-2147483648..2147483647)
+ ObjectName ::= OBJECT IDENTIFIER
+ Counter32 ::= [APPLICATION 1] IMPLICIT INTEGER (0..4294967295)
+ Gauge32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
+ Unsigned32 ::= [APPLICATION 2] IMPLICIT INTEGER (0..4294967295)
+ Integer-value ::= INTEGER (-2147483648..2147483647)
+ Integer32 ::= INTEGER (-2147483648..2147483647)
+ ObjectID-value ::= OBJECT IDENTIFIER
+ Empty ::= NULL
+ TimeTicks ::= [APPLICATION 3] IMPLICIT INTEGER (0..4294967295)
+ Opaque ::= [APPLICATION 4] IMPLICIT OCTET STRING
+ Counter64 ::= [APPLICATION 6] IMPLICIT INTEGER (0..18446744073709551615)
+
+ ObjectSyntax ::= CHOICE {
+ simple SimpleSyntax,
+ application-wide ApplicationSyntax
}
- if (tree != NULL) {
- proto_tree_add_text(tree, tvb, offset, 0,
- "ERROR: Couldn't parse %s: %s", field_name, errstr);
- call_dissector(data_handle,
- tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
- }
-}
-
-static void
-dissect_snmp_error(tvbuff_t *tvb, int offset, packet_info *pinfo,
- proto_tree *tree, const char *message)
-{
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, message);
- if (tree != NULL) {
- proto_tree_add_text(tree, tvb, offset, 0, "%s", message);
- call_dissector(data_handle,
- tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
+ SimpleSyntax ::= CHOICE {
+ integer-value Integer-value,
+ string-value String-value,
+ objectID-value ObjectID-value,
+ empty Empty
}
-}
-
-gchar *
-format_oid(subid_t *oid, guint oid_length)
-{
- char *result;
- int result_len;
- int len;
- unsigned int i;
- char *buf;
-#ifdef HAVE_SOME_SNMP
- guchar *oid_string;
- size_t oid_string_len;
- size_t oid_out_len;
-#endif
-
- result_len = oid_length * 22;
-#ifdef HAVE_SOME_SNMP
- /*
- * Get the decoded form of the OID, and add its length to the
- * length of the result string.
- *
- * XXX - check for "sprint_realloc_objid()" failure.
- */
- oid_string_len = 256;
- oid_string = g_malloc(oid_string_len);
- *oid_string = '\0';
- oid_out_len = 0;
- sprint_realloc_objid(&oid_string, &oid_string_len, &oid_out_len, 1,
- oid, oid_length);
- result_len += strlen(oid_string) + 3;
-#endif
+ ApplicationSyntax ::= CHOICE {
+ ipAddress-value IpAddress,
+ counter-value Counter32,
+ timeticks-value TimeTicks,
+ arbitrary-value Opaque,
+ big-counter-value Counter64,
+ unsigned-integer-value Unsigned32
+ }
- result = g_malloc(result_len + 1);
- buf = result;
- len = sprintf(buf, "%lu", (unsigned long)oid[0]);
- buf += len;
- for (i = 1; i < oid_length;i++) {
- len = sprintf(buf, ".%lu", (unsigned long)oid[i]);
- buf += len;
+ ValueType ::= CHOICE {
+ value ObjectSyntax,
+ unSpecified NULL,
+ noSuchObject[0] IMPLICIT NULL,
+ noSuchInstance[1] IMPLICIT NULL,
+ endOfMibView[2] IMPLICIT NULL
}
-#ifdef HAVE_SOME_SNMP
- /*
- * Append the decoded form of the OID.
- */
- sprintf(buf, " (%s)", oid_string);
- g_free(oid_string);
-#endif
+ VarBind ::= SEQUENCE {
+ name ObjectName,
+ valueType ValueType
+ }
- return result;
-}
+ */
-/* returns the decoded (can be NULL) and non_decoded OID strings,
- returned pointers shall be freed by the caller */
-void
-new_format_oid(subid_t *oid, guint oid_length,
- gchar **non_decoded, gchar **decoded)
+extern int
+dissect_snmp_VarBind(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset,
+ asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_)
{
- int len;
- unsigned int i;
- char *buf;
-
-#ifdef HAVE_SOME_SNMP
- guchar *oid_string;
- size_t oid_string_len;
- size_t oid_out_len;
-
- /*
- * Get the decoded form of the OID, and add its length to the
- * length of the result string.
- */
-
- oid_string_len = 256;
- oid_string = g_malloc(oid_string_len);
- *oid_string = '\0';
- oid_out_len = 0;
- sprint_realloc_objid(&oid_string, &oid_string_len, &oid_out_len, 1,
- oid, oid_length);
- *decoded = oid_string;
-#else
- *decoded = NULL;
-#endif
-
- *non_decoded = g_malloc(oid_length * 22 + 1);
- buf = *non_decoded;
- len = sprintf(buf, "%lu", (unsigned long)oid[0]);
- buf += len;
- for (i = 1; i < oid_length; i++) {
- len = sprintf(buf, ".%lu", (unsigned long)oid[i]);
- buf += len;
+ int seq_offset, name_offset, value_offset, value_start;
+ guint32 seq_len, name_len, value_len;
+ gint8 ber_class;
+ gboolean pc;
+ gint32 tag;
+ gboolean ind;
+ guint32* subids;
+ guint8* oid_bytes;
+ oid_info_t* oid_info = NULL;
+ guint oid_matched, oid_left;
+ proto_item *pi_name, *pi_varbind, *pi_value = NULL;
+ proto_tree *pt, *pt_varbind, *pt_name, *pt_value;
+ char label[ITEM_LABEL_LENGTH];
+ const char* repr = NULL;
+ const char* info_oid = NULL;
+ char* valstr;
+ int hfid = -1;
+ int min_len = 0, max_len = 0;
+ gboolean oid_info_is_ok;
+ const char* oid_string = NULL;
+ enum {BER_NO_ERROR, BER_WRONG_LENGTH, BER_WRONG_TAG} format_error = BER_NO_ERROR;
+
+ seq_offset = offset;
+
+ /* first have the VarBind's sequence header */
+ offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
+ offset = get_ber_length(tvb, offset, &seq_len, &ind);
+
+ seq_len += offset - seq_offset;
+
+ if (!pc && ber_class==BER_CLASS_UNI && tag==BER_UNI_TAG_SEQUENCE) {
+ proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"VarBind must be an universal class sequence");
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "VarBind is not an universal class sequence");
+ return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
}
-}
-
-#ifdef HAVE_SOME_SNMP
-static guchar *
-check_var_length(guint vb_length, guint required_length)
-{
- gchar *buf;
- static const char badlen_fmt[] = "Length is %u, should be %u";
- if (vb_length != required_length) {
- /* Enough room for the largest "Length is XXX,
- should be XXX" message - 10 digits for each
- XXX. */
- buf = g_malloc(sizeof badlen_fmt + 10 + 10);
- sprintf(buf, badlen_fmt, vb_length, required_length);
- return buf;
+ if (ind) {
+ proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"Indicator must be clear in VarBind");
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "VarBind has indicator set");
+ return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
}
- return NULL; /* length is OK */
-}
-static gchar *
-format_var(struct variable_list *variable, subid_t *variable_oid,
- guint variable_oid_length, gushort vb_type, guint val_len)
-{
- guchar *buf;
- size_t buf_len;
- size_t out_len;
+ /* then we have the ObjectName's header */
- switch (vb_type) {
+ offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
+ name_offset = offset = get_ber_length(tvb, offset, &name_len, &ind);
- case SNMP_IPADDR:
- /* Length has to be 4 bytes. */
- buf = check_var_length(val_len, 4);
- if (buf != NULL)
- return buf; /* it's not 4 bytes */
- break;
+ if (! ( !pc && ber_class==BER_CLASS_UNI && tag==BER_UNI_TAG_OID) ) {
+ proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"ObjectName must be an OID in primitive encoding");
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "ObjectName not an OID");
+ return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
+ }
-#ifdef REMOVED
- /* not all counters are encoded as a full 64bit integer */
- case SNMP_COUNTER64:
- /* Length has to be 8 bytes. */
- buf = check_var_length(val_len, 8);
- if (buf != NULL)
- return buf; /* it's not 8 bytes */
- break;
-#endif
- default:
- break;
+ if (ind) {
+ proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"Indicator must be clear in ObjectName");
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "ObjectName has indicator set");
+ return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
}
- variable->next_variable = NULL;
- variable->name = variable_oid;
- variable->name_length = variable_oid_length;
- switch (vb_type) {
+ offset += name_len;
+ value_start = offset;
- case SNMP_INTEGER:
- variable->type = VALTYPE_INTEGER;
- break;
+ /* then we have the value's header */
+ offset = get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
+ value_offset = get_ber_length(tvb, offset, &value_len, &ind);
- case SNMP_COUNTER:
- variable->type = VALTYPE_COUNTER;
- break;
+ if (! (!pc) ) {
+ proto_item* pi = proto_tree_add_text(tree, tvb, seq_offset, seq_len,"the value must be in primitive encoding");
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "value not in primitive encoding");
+ return dissect_unknown_ber(actx->pinfo, tvb, seq_offset, pt);
+ }
- case SNMP_GAUGE:
- variable->type = VALTYPE_GAUGE;
- break;
+ /* Now, we know where everithing is */
- case SNMP_TIMETICKS:
- variable->type = VALTYPE_TIMETICKS;
- break;
- case SNMP_OCTETSTR:
- variable->type = VALTYPE_STRING;
- break;
- case SNMP_IPADDR:
- variable->type = VALTYPE_IPADDR;
- break;
+ /* we add the varbind tree root with a dummy label we'll fill later on */
+ pi_varbind = proto_tree_add_text(tree,tvb,seq_offset,seq_len,"VarBind");
+ pt_varbind = proto_item_add_subtree(pi_varbind,ett_varbind);
+ *label = '\0';
- case SNMP_OPAQUE:
- variable->type = VALTYPE_OPAQUE;
- break;
+ pi_name = proto_tree_add_item(pt_varbind,hf_snmp_objectname,tvb,name_offset,name_len,ENC_NA);
+ pt_name = proto_item_add_subtree(pi_name,ett_name);
- case SNMP_NSAP:
- variable->type = VALTYPE_NSAP;
- break;
+ /* fetch ObjectName and its relative oid_info */
+ oid_bytes = ep_tvb_memdup(tvb, name_offset, name_len);
+ oid_info = oid_get_from_encoded(oid_bytes, name_len, &subids, &oid_matched, &oid_left);
- case SNMP_OBJECTID:
- variable->type = VALTYPE_OBJECTID;
- break;
+ add_oid_debug_subtree(oid_info,pt_name);
- case SNMP_BITSTR:
- variable->type = VALTYPE_BITSTR;
- break;
+ if (!subids) {
+ proto_item* pi;
- case SNMP_COUNTER64:
- variable->type = VALTYPE_COUNTER64;
- break;
+ repr = oid_encoded2string(oid_bytes, name_len);
+ pi = proto_tree_add_text(pt_name,tvb, 0, 0, "invalid oid: %s", repr);
+ pt = proto_item_add_subtree(pi, ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "invalid oid: %s", repr);
+ return dissect_unknown_ber(actx->pinfo, tvb, name_offset, pt);
}
- variable->val_len = val_len;
- /*
- * XXX - check for "sprint_realloc_objid()" failure.
- */
- buf_len = 256;
- buf = g_malloc(buf_len);
- *buf = '\0';
- out_len = 0;
- sprint_realloc_value(&buf, &buf_len, &out_len, 1, variable_oid,
- variable_oid_length, variable);
- return buf;
-}
-#endif
+ if (oid_matched+oid_left) {
+ oid_string = oid_subid2string(subids,oid_matched+oid_left);
+ }
-static int
-snmp_variable_decode(proto_tree *snmp_tree,
- subid_t *variable_oid
-#ifndef HAVE_SOME_SNMP
- _U_
-#endif
- ,
- guint variable_oid_length
-#ifndef HAVE_SOME_SNMP
- _U_
-#endif
- ,
- ASN1_SCK *asn1, int offset, guint *lengthp, tvbuff_t **out_tvb)
-{
- int start, vb_value_start;
- guint length;
- gboolean def;
- guint vb_length;
- gushort vb_type;
- gchar *vb_type_name;
- int ret;
- guint cls, con, tag;
-
- gint32 vb_integer_value;
- guint32 vb_uinteger_value;
-
- guint8 *vb_octet_string;
-
- subid_t *vb_oid;
- guint vb_oid_length;
-
- gchar *vb_display_string;
-
-#ifdef HAVE_SOME_SNMP
- struct variable_list variable;
- long value;
-#else /* HAVE_SOME_SNMP */
- unsigned int i;
- gchar *buf;
- int len;
-#endif /* HAVE_SOME_SNMP */
-
- /* parse the type of the object */
- start = asn1->offset;
- ret = asn1_header_decode (asn1, &cls, &con, &tag, &def, &vb_length);
- if (ret != ASN1_ERR_NOERROR)
- return ret;
- vb_value_start = asn1->offset;
- if (!def)
- return ASN1_ERR_LENGTH_NOT_DEFINITE;
-
- /* Convert the class, constructed flag, and tag to a type. */
- vb_type_name = snmp_tag_cls2syntax(tag, cls, &vb_type);
- if (vb_type_name == NULL) {
- /*
- * Unsupported type.
- * Dissect the value as an opaque string of octets.
- */
- vb_type_name = "unsupported type";
- vb_type = SNMP_OPAQUE;
- }
-
- /* parse the value */
- switch (vb_type) {
-
- case SNMP_INTEGER:
- ret = asn1_int32_value_decode(asn1, vb_length,
- &vb_integer_value);
- if (ret != ASN1_ERR_NOERROR)
- return ret;
- length = asn1->offset - start;
- if (snmp_tree) {
-#ifdef HAVE_SOME_SNMP
- value = vb_integer_value;
- variable.val.integer = &value;
- vb_display_string = format_var(&variable,
- variable_oid, variable_oid_length, vb_type,
- vb_length);
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s", vb_display_string);
- g_free(vb_display_string);
-#else /* HAVE_SOME_SNMP */
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s: %d (%#x)", vb_type_name,
- vb_integer_value, vb_integer_value);
-#endif /* HAVE_SOME_SNMP */
+ if (ber_class == BER_CLASS_CON) {
+ /* if we have an error value just add it and get out the way ASAP */
+ proto_item* pi;
+ const char* note;
+
+ if (value_len != 0) {
+ min_len = max_len = 0;
+ format_error = BER_WRONG_LENGTH;
+ }
+
+ switch (tag) {
+ case SERR_NSO:
+ hfid = hf_snmp_noSuchObject;
+ note = "noSuchObject";
+ break;
+ case SERR_NSI:
+ hfid = hf_snmp_noSuchInstance;
+ note = "noSuchInstance";
+ break;
+ case SERR_EOM:
+ hfid = hf_snmp_endOfMibView;
+ note = "endOfMibView";
+ break;
+ default: {
+ pi = proto_tree_add_text(pt_varbind,tvb,0,0,"Wrong tag for Error Value: expected 0, 1, or 2 but got: %d",tag);
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong tag for SNMP VarBind error value");
+ return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
+ }
}
- break;
- case SNMP_COUNTER:
- case SNMP_GAUGE:
- case SNMP_TIMETICKS:
- ret = asn1_uint32_value_decode(asn1, vb_length,
- &vb_uinteger_value);
- if (ret != ASN1_ERR_NOERROR)
- return ret;
- length = asn1->offset - start;
- if (snmp_tree) {
-#ifdef HAVE_SOME_SNMP
- value = vb_uinteger_value;
- variable.val.integer = &value;
- vb_display_string = format_var(&variable,
- variable_oid, variable_oid_length, vb_type,
- vb_length);
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s", vb_display_string);
- g_free(vb_display_string);
-#else /* HAVE_SOME_SNMP */
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s: %u (%#x)", vb_type_name,
- vb_uinteger_value, vb_uinteger_value);
-#endif /* HAVE_SOME_SNMP */
- }
- break;
+ pi = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,ENC_BIG_ENDIAN);
+ expert_add_info_format(actx->pinfo, pi, PI_RESPONSE_CODE, PI_NOTE, "%s",note);
+ g_strlcpy (label, note, ITEM_LABEL_LENGTH);
+ goto set_label;
+ }
- case SNMP_OCTETSTR:
- case SNMP_IPADDR:
- case SNMP_OPAQUE:
- case SNMP_NSAP:
- case SNMP_BITSTR:
- case SNMP_COUNTER64:
- ret = asn1_string_value_decode (asn1, vb_length,
- &vb_octet_string);
- if (ret != ASN1_ERR_NOERROR)
- return ret;
- length = asn1->offset - start;
- if (out_tvb) {
- *out_tvb = tvb_new_subset(asn1->tvb, vb_value_start, asn1->offset - vb_value_start, vb_length);
- }
- if (snmp_tree) {
-#ifdef HAVE_SOME_SNMP
- variable.val.string = vb_octet_string;
- vb_display_string = format_var(&variable,
- variable_oid, variable_oid_length, vb_type,
- vb_length);
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s", vb_display_string);
- g_free(vb_display_string);
-#else /* HAVE_SOME_SNMP */
- /*
- * If some characters are not printable, display
- * the string as bytes.
- */
- for (i = 0; i < vb_length; i++) {
- if (!(isprint(vb_octet_string[i])
- || isspace(vb_octet_string[i])))
- break;
- }
- if (i < vb_length) {
- /*
- * We stopped, due to a non-printable
- * character, before we got to the end
- * of the string.
- */
- vb_display_string = g_malloc(4*vb_length);
- buf = &vb_display_string[0];
- len = sprintf(buf, "%03u", vb_octet_string[0]);
- buf += len;
- for (i = 1; i < vb_length; i++) {
- len = sprintf(buf, ".%03u",
- vb_octet_string[i]);
- buf += len;
+ /* 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 */
+ switch (oid_info->kind) {
+ case OID_KIND_SCALAR:
+ if (oid_left == 1) {
+ /* OK: we got the instance sub-id */
+ proto_tree_add_uint64(pt_name,hf_snmp_scalar_instance_index,tvb,name_offset,name_len,subids[oid_matched]);
+ oid_info_is_ok = TRUE;
+ goto indexing_done;
+ } else if (oid_left == 0) {
+ if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
+ /* unSpecified does not require an instance sub-id add the new value and get off the way! */
+ pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,ENC_NA);
+ goto set_label;
+ } else {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"A scalar should have one instance sub-id this one has none");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "No instance sub-id in scalar value");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
}
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s: %s", vb_type_name,
- vb_display_string);
- g_free(vb_display_string);
} else {
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s: %s", vb_type_name,
- SAFE_STRING(vb_octet_string, vb_length));
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"A scalar should have only one instance sub-id this has: %d",oid_left);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong number of instance sub-ids in scalar value");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
}
-#endif /* HAVE_SOME_SNMP */
- }
- g_free(vb_octet_string);
- break;
-
- case SNMP_NULL:
- ret = asn1_null_decode (asn1, vb_length);
- if (ret != ASN1_ERR_NOERROR)
- return ret;
- length = asn1->offset - start;
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, asn1->tvb, offset, length,
- "Value: %s", vb_type_name);
- }
- break;
-
- case SNMP_OBJECTID:
- ret = asn1_oid_value_decode (asn1, vb_length, &vb_oid,
- &vb_oid_length);
- if (ret != ASN1_ERR_NOERROR)
- return ret;
- length = asn1->offset - start;
- if (snmp_tree) {
-#ifdef HAVE_SOME_SNMP
- variable.val.objid = vb_oid;
- vb_display_string = format_var(&variable,
- variable_oid, variable_oid_length, vb_type,
- vb_oid_length * sizeof (subid_t));
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s", vb_display_string);
- g_free(vb_display_string);
-#else /* HAVE_SOME_SNMP */
- vb_display_string = format_oid(vb_oid, vb_oid_length);
- proto_tree_add_text(snmp_tree, asn1->tvb, offset,
- length,
- "Value: %s: %s", vb_type_name, vb_display_string);
- g_free(vb_display_string);
-#endif /* HAVE_SOME_SNMP */
- }
- g_free(vb_oid);
break;
+ case OID_KIND_COLUMN:
+ if ( oid_info->parent->kind == OID_KIND_ROW) {
+ oid_key_t* k = oid_info->parent->key;
+ guint key_start = oid_matched;
+ guint key_len = oid_left;
+ oid_info_is_ok = TRUE;
+
+ if ( key_len == 0 && ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
+ /* unSpecified does not require an instance sub-id add the new value and get off the way! */
+ pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,ENC_NA);
+ goto set_label;
+ }
- case SNMP_NOSUCHOBJECT:
- length = asn1->offset - start;
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, asn1->tvb, offset, length,
- "Value: %s: no such object", vb_type_name);
+ if (k) {
+ for (;k;k = k->next) {
+ guint suboid_len;
+
+ if (key_start >= oid_matched+oid_left) {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index sub-oid shorter than expected");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid shorter than expected");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+
+ switch(k->key_type) {
+ case OID_KEY_TYPE_WRONG: {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"OID instaces not handled, if you want this implemented please contact the wireshark developers");
+ expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+ case OID_KEY_TYPE_INTEGER: {
+ if (IS_FT_INT(k->ft_type)) {
+ proto_tree_add_int(pt_name,k->hfid,tvb,name_offset,name_len,(guint)subids[key_start]);
+ } else { /* if it's not an unsigned int let proto_tree_add_uint throw a warning */
+ proto_tree_add_uint64(pt_name,k->hfid,tvb,name_offset,name_len,(guint)subids[key_start]);
+ }
+ key_start++;
+ key_len--;
+ continue; /* k->next */
+ }
+ case OID_KEY_TYPE_IMPLIED_OID:
+ suboid_len = key_len;
+
+ goto show_oid_index;
+
+ case OID_KEY_TYPE_OID: {
+ guint8* suboid_buf;
+ guint suboid_buf_len;
+ guint32* suboid;
+
+ suboid_len = subids[key_start++];
+ key_len--;
+
+show_oid_index:
+ suboid = &(subids[key_start]);
+
+ if( suboid_len == 0 ) {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"an index sub-oid OID cannot be 0 bytes long!");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid OID with len=0");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+
+ if( key_len < suboid_len ) {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index sub-oid should not be longer than remaining oid size");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index sub-oid longer than remaining oid size");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+
+ suboid_buf_len = oid_subid2encoded(suboid_len, suboid, &suboid_buf);
+
+ DISSECTOR_ASSERT(suboid_buf_len);
+
+ proto_tree_add_oid(pt_name,k->hfid,tvb,name_offset, suboid_buf_len, suboid_buf);
+
+ key_start += suboid_len;
+ key_len -= suboid_len + 1;
+ continue; /* k->next */
+ }
+ default: {
+ guint8* buf;
+ guint buf_len;
+ guint32* suboid;
+ guint i;
+
+
+ switch (k->key_type) {
+ case OID_KEY_TYPE_IPADDR:
+ suboid = &(subids[key_start]);
+ buf_len = 4;
+ break;
+ case OID_KEY_TYPE_IMPLIED_STRING:
+ case OID_KEY_TYPE_IMPLIED_BYTES:
+ case OID_KEY_TYPE_ETHER:
+ suboid = &(subids[key_start]);
+ buf_len = key_len;
+ break;
+ default:
+ buf_len = k->num_subids;
+ suboid = &(subids[key_start]);
+
+ if(!buf_len) {
+ buf_len = *suboid++;
+ key_len--;
+ key_start++;
+ }
+ break;
+ }
+
+ if( key_len < buf_len ) {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"index string should not be longer than remaining oid size");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "index string longer than remaining oid size");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+
+ buf = ep_alloc(buf_len+1);
+ for (i = 0; i < buf_len; i++)
+ buf[i] = (guint8)suboid[i];
+ buf[i] = '\0';
+
+ switch(k->key_type) {
+ case OID_KEY_TYPE_STRING:
+ case OID_KEY_TYPE_IMPLIED_STRING:
+ proto_tree_add_string(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
+ break;
+ case OID_KEY_TYPE_BYTES:
+ case OID_KEY_TYPE_NSAP:
+ case OID_KEY_TYPE_IMPLIED_BYTES:
+ proto_tree_add_bytes(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
+ break;
+ case OID_KEY_TYPE_ETHER:
+ proto_tree_add_ether(pt_name,k->hfid,tvb,name_offset,buf_len, buf);
+ break;
+ case OID_KEY_TYPE_IPADDR: {
+ guint32* ipv4_p = (void*)buf;
+ proto_tree_add_ipv4(pt_name,k->hfid,tvb,name_offset,buf_len, *ipv4_p);
+ }
+ break;
+ default:
+ DISSECTOR_ASSERT_NOT_REACHED();
+ break;
+ }
+
+ key_start += buf_len;
+ key_len -= buf_len;
+ continue; /* k->next*/
+ }
+ }
+ }
+ goto indexing_done;
+ } else {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"We do not know how to handle this OID, if you want this implemented please contact the wireshark developers");
+ expert_add_info_format(actx->pinfo, pi, PI_UNDECODED, PI_WARN, "Unimplemented instance index");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+ } else {
+ proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"The COLUMS's parent is not a ROW. This is a BUG! please contact the wireshark developers.");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_ERROR, "COLUMS's parent is not a ROW");
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
+ }
+ default: {
+/* proto_item* pi = proto_tree_add_text(pt_name,tvb,0,0,"This kind OID should have no value");
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "This kind OID should have no value"); */
+ oid_info_is_ok = FALSE;
+ goto indexing_done;
}
- break;
+ }
+indexing_done:
+
+ if (oid_info_is_ok && oid_info->value_type) {
+ if (ber_class == BER_CLASS_UNI && tag == BER_UNI_TAG_NULL) {
+ pi_value = proto_tree_add_item(pt_varbind,hf_snmp_unSpecified,tvb,value_offset,value_len,ENC_NA);
+ } else {
+ /* Provide a tree_item to attach errors to, if needed. */
+ pi_value = pi_name;
+
+ if ((oid_info->value_type->ber_class != BER_CLASS_ANY) &&
+ (ber_class != oid_info->value_type->ber_class))
+ format_error = BER_WRONG_TAG;
+ else if ((oid_info->value_type->ber_tag != BER_TAG_ANY) &&
+ (tag != oid_info->value_type->ber_tag))
+ format_error = BER_WRONG_TAG;
+ else {
+ max_len = oid_info->value_type->max_len == -1 ? 0xffffff : oid_info->value_type->max_len;
+ min_len = oid_info->value_type->min_len;
+
+ if ((int)value_len < min_len || (int)value_len > max_len)
+ format_error = BER_WRONG_LENGTH;
+ }
- case SNMP_NOSUCHINSTANCE:
- length = asn1->offset - start;
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, asn1->tvb, offset, length,
- "Value: %s: no such instance", vb_type_name);
+ if (format_error == BER_NO_ERROR)
+ pi_value = proto_tree_add_item(pt_varbind,oid_info->value_hfid,tvb,value_offset,value_len,ENC_BIG_ENDIAN);
}
- break;
+ } else {
+ switch(ber_class|(tag<<4)) {
+ case BER_CLASS_UNI|(BER_UNI_TAG_INTEGER<<4):
+ {
+ gint64 val=0;
+ unsigned int_val_offset = value_offset;
+ unsigned i;
+
+ max_len = 5; min_len = 1;
+ if (value_len > (guint)max_len && value_len < (guint)min_len) {
+ format_error = BER_WRONG_LENGTH;
+ break;
+ }
- case SNMP_ENDOFMIBVIEW:
- length = asn1->offset - start;
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, asn1->tvb, offset, length,
- "Value: %s: end of mib view", vb_type_name);
- }
- break;
+ if(value_len > 0) {
+ /* extend sign bit */
+ if(tvb_get_guint8(tvb, int_val_offset)&0x80) {
+ val=-1;
+ }
+ for(i=0;i<value_len;i++) {
+ val=(val<<8)|tvb_get_guint8(tvb, int_val_offset);
+ int_val_offset++;
+ }
+ }
+ proto_tree_add_int64(pt_varbind, hf_snmp_integer32_value, tvb,value_offset,value_len, val);
- default:
- g_assert_not_reached();
- return ASN1_ERR_WRONG_TYPE;
+ goto already_added;
+ }
+ case BER_CLASS_UNI|(BER_UNI_TAG_OCTETSTRING<<4):
+ hfid = hf_snmp_octetstring_value;
+ break;
+ case BER_CLASS_UNI|(BER_UNI_TAG_OID<<4):
+ max_len = -1; min_len = 1;
+ if (value_len < (guint)min_len) format_error = BER_WRONG_LENGTH;
+ hfid = hf_snmp_oid_value;
+ break;
+ case BER_CLASS_UNI|(BER_UNI_TAG_NULL<<4):
+ max_len = 0; min_len = 0;
+ if (value_len != 0) format_error = BER_WRONG_LENGTH;
+ hfid = hf_snmp_null_value;
+ break;
+ case BER_CLASS_APP: /* | (SNMP_IPA<<4)*/
+ switch(value_len) {
+ case 4: hfid = hf_snmp_ipv4_value; break;
+ case 16: hfid = hf_snmp_ipv6_value; break;
+ default: hfid = hf_snmp_anyaddress_value; break;
+ }
+ break;
+ case BER_CLASS_APP|(SNMP_U32<<4):
+ hfid = hf_snmp_unsigned32_value;
+ break;
+ case BER_CLASS_APP|(SNMP_GGE<<4):
+ hfid = hf_snmp_gauge32_value;
+ break;
+ case BER_CLASS_APP|(SNMP_CNT<<4):
+ hfid = hf_snmp_counter_value;
+ break;
+ case BER_CLASS_APP|(SNMP_TIT<<4):
+ hfid = hf_snmp_timeticks_value;
+ break;
+ case BER_CLASS_APP|(SNMP_OPQ<<4):
+ hfid = hf_snmp_opaque_value;
+ break;
+ case BER_CLASS_APP|(SNMP_NSP<<4):
+ hfid = hf_snmp_nsap_value;
+ break;
+ case BER_CLASS_APP|(SNMP_C64<<4):
+ hfid = hf_snmp_big_counter_value;
+ break;
+ default:
+ hfid = hf_snmp_unknown_value;
+ break;
+ }
+
+ pi_value = proto_tree_add_item(pt_varbind,hfid,tvb,value_offset,value_len,ENC_BIG_ENDIAN);
+ if (format_error != BER_NO_ERROR) {
+ expert_add_info_format(actx->pinfo, pi_value, PI_UNDECODED, PI_NOTE, "Unresolved value, Missing MIB");
+ }
+
+already_added:
+ oid_info_is_ok = FALSE;
}
- *lengthp = length;
- return ASN1_ERR_NOERROR;
-}
-static void
-dissect_common_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
- proto_tree *tree, proto_tree *root_tree, ASN1_SCK asn1, guint pdu_type, int start)
-{
- gboolean def;
- guint length;
- guint sequence_length;
+ pt_value = proto_item_add_subtree(pi_value,ett_value);
- guint32 request_id;
+ if (value_len > 0 && oid_string) {
+ tvbuff_t* sub_tvb = tvb_new_subset(tvb, value_offset, value_len, value_len);
- guint32 error_status;
+ next_tvb_add_string(&var_list, sub_tvb, (snmp_var_in_tree) ? pt_value : NULL, value_sub_dissectors_table, oid_string);
+ }
- guint32 error_index;
- char *pdu_type_string;
+set_label:
+ if (pi_value) proto_item_fill_label(PITEM_FINFO(pi_value), label);
+
+ if (oid_info && oid_info->name) {
+ if (oid_left >= 1) {
+ repr = ep_strdup_printf("%s.%s (%s)", oid_info->name,
+ oid_subid2string(&(subids[oid_matched]),oid_left),
+ oid_subid2string(subids,oid_matched+oid_left));
+ info_oid = ep_strdup_printf("%s.%s", oid_info->name,
+ oid_subid2string(&(subids[oid_matched]),oid_left));
+ } else {
+ repr = ep_strdup_printf("%s (%s)", oid_info->name,
+ oid_subid2string(subids,oid_matched));
+ info_oid = oid_info->name;
+ }
+ } else if (oid_string) {
+ repr = ep_strdup(oid_string);
+ info_oid = oid_string;
+ } else {
+ repr = ep_strdup("[Bad OID]");
+ }
- subid_t *enterprise;
- guint enterprise_length;
+ valstr = strstr(label,": ");
+ valstr = valstr ? valstr+2 : label;
- guint32 agent_ipaddr;
+ proto_item_set_text(pi_varbind,"%s: %s",repr,valstr);
- guint8 *agent_address;
- guint agent_address_length;
+ if (display_oid && info_oid) {
+ col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", info_oid);
+ }
- guint32 trap_type;
+ switch (format_error) {
+ case BER_WRONG_LENGTH: {
+ proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
+ proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong value length: %u expecting: %u <= len <= %u",
+ value_len, min_len, max_len == -1 ? 0xFFFFFF : max_len);
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong length for SNMP VarBind/value");
+ return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
+ }
+ case BER_WRONG_TAG: {
+ proto_tree* pt = proto_item_add_subtree(pi_value,ett_decoding_error);
+ proto_item* pi = proto_tree_add_text(pt,tvb,0,0,"Wrong class/tag for Value expected: %d,%d got: %d,%d",
+ oid_info->value_type->ber_class, oid_info->value_type->ber_tag,
+ ber_class, tag);
+ pt = proto_item_add_subtree(pi,ett_decoding_error);
+ expert_add_info_format(actx->pinfo, pi, PI_MALFORMED, PI_WARN, "Wrong class/tag for SNMP VarBind/value");
+ return dissect_unknown_ber(actx->pinfo, tvb, value_start, pt);
+ }
+ default:
+ break;
+ }
- guint32 specific_type;
+ return seq_offset + seq_len;
+}
- guint timestamp;
- guint timestamp_length;
- gchar *oid_string;
- gchar *decoded_oid;
- gchar *non_decoded_oid;
+#define F_SNMP_ENGINEID_CONFORM 0x80
+#define SNMP_ENGINEID_RFC1910 0x00
+#define SNMP_ENGINEID_RFC3411 0x01
+static const true_false_string tfs_snmp_engineid_conform = {
+ "RFC3411 (SNMPv3)",
+ "RFC1910 (Non-SNMPv3)"
+};
- guint variable_bindings_length;
+#define SNMP_ENGINEID_FORMAT_IPV4 0x01
+#define SNMP_ENGINEID_FORMAT_IPV6 0x02
+#define SNMP_ENGINEID_FORMAT_MACADDRESS 0x03
+#define SNMP_ENGINEID_FORMAT_TEXT 0x04
+#define SNMP_ENGINEID_FORMAT_OCTETS 0x05
+
+static const value_string snmp_engineid_format_vals[] = {
+ { SNMP_ENGINEID_FORMAT_IPV4, "IPv4 address" },
+ { SNMP_ENGINEID_FORMAT_IPV6, "IPv6 address" },
+ { SNMP_ENGINEID_FORMAT_MACADDRESS, "MAC address" },
+ { SNMP_ENGINEID_FORMAT_TEXT, "Text, administratively assigned" },
+ { SNMP_ENGINEID_FORMAT_OCTETS, "Octets, administratively assigned" },
+ { 0, NULL }
+};
- int vb_index;
- guint variable_length;
- subid_t *variable_oid;
- guint variable_oid_length;
- tvbuff_t *next_tvb;
+#define SNMP_ENGINEID_CISCO_AGENT 0x00
+#define SNMP_ENGINEID_CISCO_MANAGER 0x01
- int ret;
- guint cls, con, tag;
+static const value_string snmp_engineid_cisco_type_vals[] = {
+ { SNMP_ENGINEID_CISCO_AGENT, "Agent" },
+ { SNMP_ENGINEID_CISCO_MANAGER, "Manager" },
+ { 0, NULL }
+};
- pdu_type_string = val_to_str(pdu_type, pdu_types,
- "Unknown PDU type %#x");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, pdu_type_string);
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(tree, hf_snmp_pdutype, tvb, offset, length,
- pdu_type);
- }
- offset += length;
-
- /* get the fields in the PDU preceeding the variable-bindings sequence */
- switch (pdu_type) {
-
- case SNMP_MSG_GET:
- case SNMP_MSG_GETNEXT:
- case SNMP_MSG_RESPONSE:
- case SNMP_MSG_SET:
- case SNMP_MSG_GETBULK:
- case SNMP_MSG_INFORM:
- case SNMP_MSG_TRAP2:
- case SNMP_MSG_REPORT:
- /* request id */
- ret = asn1_uint32_decode (&asn1, &request_id, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "request ID", ret);
- return;
- }
- if (tree) {
- proto_tree_add_uint(tree, hf_snmp_request_id,
- tvb, offset, length, request_id);
- }
- offset += length;
-
- /* error status, or getbulk non-repeaters */
- ret = asn1_uint32_decode (&asn1, &error_status, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- (pdu_type == SNMP_MSG_GETBULK) ? "non-repeaters"
- : "error status",
- ret);
- return;
- }
- if (tree) {
- if (pdu_type == SNMP_MSG_GETBULK) {
- proto_tree_add_text(tree, tvb, offset,
- length, "Non-repeaters: %u", error_status);
- } else {
- proto_tree_add_uint(tree,
- hf_snmp_error_status,
- tvb, offset,
- length, error_status);
- }
- }
- offset += length;
-
- /* error index, or getbulk max-repetitions */
- ret = asn1_uint32_decode (&asn1, &error_index, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- (pdu_type == SNMP_MSG_GETBULK) ? "max repetitions"
- : "error index",
- ret);
- return;
- }
- if (tree) {
- if (pdu_type == SNMP_MSG_GETBULK) {
- proto_tree_add_text(tree, tvb, offset,
- length, "Max repetitions: %u", error_index);
- } else {
- proto_tree_add_text(tree, tvb, offset,
- length, "Error Index: %u", error_index);
- }
- }
- offset += length;
- break;
+/*
+ * SNMP Engine ID dissection according to RFC 3411 (SnmpEngineID TC)
+ * or historic RFC 1910 (AgentID)
+ */
+int
+dissect_snmp_engineid(proto_tree *tree, tvbuff_t *tvb, int offset, int len)
+{
+ proto_item *item = NULL;
+ guint8 conformance, format;
+ guint32 enterpriseid, seconds;
+ nstime_t ts;
+ int len_remain = len;
+
+ /* first bit: engine id conformance */
+ if (len_remain<4) return offset;
+ conformance = ((tvb_get_guint8(tvb, offset)>>7) & 0x01);
+ proto_tree_add_item(tree, hf_snmp_engineid_conform, tvb, offset, 1, ENC_BIG_ENDIAN);
+
+ /* 4-byte enterprise number/name */
+ if (len_remain<4) return offset;
+ enterpriseid = tvb_get_ntohl(tvb, offset);
+ if (conformance)
+ enterpriseid -= 0x80000000; /* ignore first bit */
+ proto_tree_add_uint(tree, hf_snmp_engineid_enterprise, tvb, offset, 4, enterpriseid);
+ offset+=4;
+ len_remain-=4;
+
+ switch(conformance) {
+
+ case SNMP_ENGINEID_RFC1910:
+ /* 12-byte AgentID w/ 8-byte trailer */
+ if (len_remain==8) {
+ proto_tree_add_text(tree, tvb, offset, 8, "AgentID Trailer: 0x%s",
+ tvb_bytes_to_str(tvb, offset, 8));
+ offset+=8;
+ len_remain-=8;
+ } else {
+ proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC1910>");
+ return offset;
+ }
+ break;
+
+ case SNMP_ENGINEID_RFC3411: /* variable length: 5..32 */
+
+ /* 1-byte format specifier */
+ if (len_remain<1) return offset;
+ format = tvb_get_guint8(tvb, offset);
+ item = proto_tree_add_uint_format(tree, hf_snmp_engineid_format, tvb, offset, 1, format, "Engine ID Format: %s (%d)",
+ val_to_str(format, snmp_engineid_format_vals, "Reserved/Enterprise-specific"), format);
+ offset+=1;
+ len_remain-=1;
+
+ switch(format) {
+ case SNMP_ENGINEID_FORMAT_IPV4:
+ /* 4-byte IPv4 address */
+ if (len_remain==4) {
+ proto_tree_add_item(tree, hf_snmp_engineid_ipv4, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset+=4;
+ len_remain=0;
+ }
+ break;
+ case SNMP_ENGINEID_FORMAT_IPV6:
+ /* 16-byte IPv6 address */
+ if (len_remain==16) {
+ proto_tree_add_item(tree, hf_snmp_engineid_ipv6, tvb, offset, 16, ENC_NA);
+ offset+=16;
+ len_remain=0;
+ }
+ break;
+ case SNMP_ENGINEID_FORMAT_MACADDRESS:
+ /* See: https://supportforums.cisco.com/message/3010617#3010617 for details. */
+ if ((enterpriseid==9)&&(len_remain==7)) {
+ proto_tree_add_item(tree, hf_snmp_engineid_cisco_type, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+ len_remain--;
+ }
+ /* 6-byte MAC address */
+ if (len_remain==6) {
+ proto_tree_add_item(tree, hf_snmp_engineid_mac, tvb, offset, 6, ENC_BIG_ENDIAN);
+ offset+=6;
+ len_remain=0;
+ }
+ break;
+ case SNMP_ENGINEID_FORMAT_TEXT:
+ /* max. 27-byte string, administratively assigned */
+ if (len_remain<=27) {
+ proto_tree_add_item(tree, hf_snmp_engineid_text, tvb, offset, len_remain, ENC_ASCII|ENC_NA);
+ offset+=len_remain;
+ len_remain=0;
+ }
+ break;
+ case 128:
+ /* most common enterprise-specific format: (ucd|net)-snmp random */
+ if ((enterpriseid==2021)||(enterpriseid==8072)) {
+ proto_item_append_text(item, (enterpriseid==2021) ? ": UCD-SNMP Random" : ": Net-SNMP Random");
+ /* demystify: 4B random, 4B epoch seconds */
+ if (len_remain==8) {
+ proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, 4, ENC_NA);
+ seconds = tvb_get_letohl(tvb, offset+4);
+ ts.secs = seconds;
+ ts.nsecs = 0;
+ proto_tree_add_time_format_value(tree, hf_snmp_engineid_time, tvb, offset+4, 4,
+ &ts, "%s",
+ abs_time_secs_to_str(seconds, ABSOLUTE_TIME_LOCAL, TRUE));
+ offset+=8;
+ len_remain=0;
+ }
+ }
+ break;
+ case SNMP_ENGINEID_FORMAT_OCTETS:
+ default:
+ /* max. 27 bytes, administratively assigned or unknown format */
+ if (len_remain<=27) {
+ proto_tree_add_item(tree, hf_snmp_engineid_data, tvb, offset, len_remain, ENC_NA);
+ offset+=len_remain;
+ len_remain=0;
+ }
+ break;
+ }
+ }
+
+ if (len_remain>0) {
+ proto_tree_add_text(tree, tvb, offset, len_remain, "<Data not conforming to RFC3411>");
+ offset+=len_remain;
+ }
+ return offset;
+}
+
+
+static void set_ue_keys(snmp_ue_assoc_t* n ) {
+ guint key_size = n->user.authModel->key_size;
+
+ n->user.authKey.data = se_alloc(key_size);
+ n->user.authKey.len = key_size;
+ n->user.authModel->pass2key(n->user.authPassword.data,
+ n->user.authPassword.len,
+ n->engine.data,
+ n->engine.len,
+ n->user.authKey.data);
+
+ n->user.privKey.data = se_alloc(key_size);
+ n->user.privKey.len = key_size;
+ n->user.authModel->pass2key(n->user.privPassword.data,
+ n->user.privPassword.len,
+ n->engine.data,
+ n->engine.len,
+ n->user.privKey.data);
+}
+
+static snmp_ue_assoc_t*
+ue_se_dup(snmp_ue_assoc_t* o)
+{
+ snmp_ue_assoc_t* d = se_memdup(o,sizeof(snmp_ue_assoc_t));
+
+ d->user.authModel = o->user.authModel;
+
+ d->user.privProtocol = o->user.privProtocol;
+
+ d->user.userName.data = se_memdup(o->user.userName.data,o->user.userName.len);
+ d->user.userName.len = o->user.userName.len;
+
+ d->user.authPassword.data = o->user.authPassword.data ? se_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
+ d->user.authPassword.len = o->user.authPassword.len;
+
+ d->user.privPassword.data = o->user.privPassword.data ? se_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
+ d->user.privPassword.len = o->user.privPassword.len;
+
+ d->engine.len = o->engine.len;
+
+ if (d->engine.len) {
+ d->engine.data = se_memdup(o->engine.data,o->engine.len);
+ set_ue_keys(d);
+ }
+
+ return d;
+
+}
+
+
+#define CACHE_INSERT(c,a) if (c) { snmp_ue_assoc_t* t = c; c = a; c->next = t; } else { c = a; a->next = NULL; }
+
+static void
+renew_ue_cache(void)
+{
+ localized_ues = NULL;
+ unlocalized_ues = NULL;
+
+ if (num_ueas) {
+ guint i;
+
+ for(i = 0; i < num_ueas; i++) {
+ snmp_ue_assoc_t* a = ue_se_dup(&(ueas[i]));
+
+ if (a->engine.len) {
+ CACHE_INSERT(localized_ues,a);
- case SNMP_MSG_TRAP:
- /* enterprise */
- ret = asn1_oid_decode (&asn1, &enterprise, &enterprise_length,
- &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "enterprise OID", ret);
- return;
- }
- if (tree) {
- oid_string = format_oid(enterprise, enterprise_length);
- proto_tree_add_string(tree, hf_snmp_enterprise, tvb,
- offset, length, oid_string);
- g_free(oid_string);
- }
- g_free(enterprise);
- offset += length;
-
- /* agent address */
- start = asn1.offset;
- ret = asn1_header_decode (&asn1, &cls, &con, &tag,
- &def, &agent_address_length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "agent address", ret);
- return;
- }
- if (!((cls == ASN1_APL && con == ASN1_PRI && tag == SNMP_IPA) ||
- (cls == ASN1_UNI && con == ASN1_PRI && tag == ASN1_OTS))) {
- /* GXSNMP 0.0.15 says the latter is "needed for
- Banyan" */
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "agent_address", ASN1_ERR_WRONG_TYPE);
- return;
- }
- if (agent_address_length != 4) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "agent_address", ASN1_ERR_WRONG_LENGTH_FOR_TYPE);
- return;
- }
- ret = asn1_string_value_decode (&asn1,
- agent_address_length, &agent_address);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "agent address", ret);
- return;
- }
- length = asn1.offset - start;
- if (tree) {
- if (agent_address_length != 4) {
- proto_tree_add_text(tree, tvb, offset,
- length,
- "Agent address: <length is %u, not 4>",
- agent_address_length);
} else {
- memcpy((guint8 *)&agent_ipaddr, agent_address,
- agent_address_length);
- proto_tree_add_ipv4(tree, hf_snmp_agent, tvb,
- offset, length, agent_ipaddr);
+ CACHE_INSERT(unlocalized_ues,a);
}
+
}
- g_free(agent_address);
- offset += length;
-
- /* generic trap type */
- ret = asn1_uint32_decode (&asn1, &trap_type, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "generic trap type", ret);
- return;
- }
- if (tree) {
- proto_tree_add_uint(tree, hf_snmp_traptype, tvb,
- offset, length, trap_type);
- }
- offset += length;
-
- /* specific trap type */
- ret = asn1_uint32_decode (&asn1, &specific_type, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "specific trap type", ret);
- return;
- }
- if (tree) {
- proto_tree_add_uint(tree, hf_snmp_spectraptype, tvb,
- offset, length, specific_type);
- }
- offset += length;
-
- /* timestamp */
- start = asn1.offset;
- ret = asn1_header_decode (&asn1, &cls, &con, &tag,
- &def, ×tamp_length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "timestamp", ret);
- return;
- }
- if (!((cls == ASN1_APL && con == ASN1_PRI && tag == SNMP_TIT) ||
- (cls == ASN1_UNI && con == ASN1_PRI && tag == ASN1_INT))) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "timestamp", ASN1_ERR_WRONG_TYPE);
- return;
- }
- ret = asn1_uint32_value_decode(&asn1, timestamp_length,
- ×tamp);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "timestamp", ret);
- return;
+ }
+}
+
+
+static snmp_ue_assoc_t*
+localize_ue( snmp_ue_assoc_t* o, const guint8* engine, guint engine_len )
+{
+ snmp_ue_assoc_t* n = se_memdup(o,sizeof(snmp_ue_assoc_t));
+
+ n->engine.data = se_memdup(engine,engine_len);
+ n->engine.len = engine_len;
+
+ set_ue_keys(n);
+
+ return n;
+}
+
+
+#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 )
+
+#define unlocalized_match(a,u,l) \
+ ( a->user.userName.len == l && memcmp( a->user.userName.data, u, l) == 0 )
+
+static snmp_ue_assoc_t*
+get_user_assoc(tvbuff_t* engine_tvb, tvbuff_t* user_tvb)
+{
+ static snmp_ue_assoc_t* a;
+ guint given_username_len;
+ guint8* given_username;
+ guint given_engine_len;
+ guint8* given_engine;
+
+ if ( ! (localized_ues || unlocalized_ues ) ) return NULL;
+
+ if (! ( user_tvb && engine_tvb ) ) return NULL;
+
+ given_username_len = tvb_ensure_length_remaining(user_tvb,0);
+ given_username = ep_tvb_memdup(user_tvb,0,-1);
+ given_engine_len = tvb_ensure_length_remaining(engine_tvb,0);
+ given_engine = ep_tvb_memdup(engine_tvb,0,-1);
+
+ for (a = localized_ues; a; a = a->next) {
+ if ( localized_match(a, given_username, given_username_len, given_engine, given_engine_len) ) {
+ return a;
}
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(tree, hf_snmp_timestamp, tvb,
- offset, length, timestamp);
+ }
+
+ for (a = unlocalized_ues; a; a = a->next) {
+ if ( unlocalized_match(a, given_username, given_username_len) ) {
+ snmp_ue_assoc_t* n = localize_ue( a, given_engine, given_engine_len );
+ CACHE_INSERT(localized_ues,n);
+ return n;
}
- offset += length;
- break;
}
- /* variable bindings */
- /* get header for variable-bindings sequence */
- ret = asn1_sequence_decode(&asn1, &variable_bindings_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "variable bindings header", ret);
- return;
+ return NULL;
+}
+
+static gboolean
+snmp_usm_auth_md5(snmp_usm_params_t* p, guint8** calc_auth_p, guint* calc_auth_len_p, gchar const** error)
+{
+ guint msg_len;
+ guint8* msg;
+ guint auth_len;
+ guint8* auth;
+ guint8* key;
+ guint key_len;
+ guint8 *calc_auth;
+ guint start;
+ guint end;
+ guint i;
+
+ if (!p->auth_tvb) {
+ *error = "No Authenticator";
+ return FALSE;
}
- offset += length;
- /* loop on variable bindings */
- vb_index = 0;
- while (variable_bindings_length > 0) {
- vb_index++;
- sequence_length = 0;
+ key = p->user_assoc->user.authKey.data;
+ key_len = p->user_assoc->user.authKey.len;
- /* parse type */
- ret = asn1_sequence_decode(&asn1, &variable_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "variable binding header", ret);
- return;
- }
- sequence_length += length;
-
- /* parse object identifier */
- ret = asn1_oid_decode (&asn1, &variable_oid,
- &variable_oid_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "variable binding OID", ret);
- return;
- }
- sequence_length += length;
-
- if (display_oid || tree) {
-
- gchar *decoded_oid;
- gchar *non_decoded_oid;
-
- new_format_oid(variable_oid, variable_oid_length,
- &non_decoded_oid, &decoded_oid);
-
- if (display_oid && check_col(pinfo->cinfo, COL_INFO)) {
- col_append_fstr(pinfo->cinfo, COL_INFO,
- " %s",
- (decoded_oid == NULL) ? non_decoded_oid :
- decoded_oid);
- }
-
- if (tree) {
- if (decoded_oid) {
- proto_tree_add_string_format(tree, hf_snmp_oid,
- tvb, offset,
- sequence_length,
- decoded_oid,
- "Object identifier %d: %s (%s)",
- vb_index,
- non_decoded_oid,
- decoded_oid);
- /* add also the non decoded oid string */
- proto_tree_add_string_hidden(tree, hf_snmp_oid,
- tvb, offset,
- sequence_length,
- non_decoded_oid);
- } else {
- proto_tree_add_string_format(tree, hf_snmp_oid,
- tvb, offset,
- sequence_length,
- non_decoded_oid,
- "Object identifier %d: %s",
- vb_index,
- non_decoded_oid);
- }
- }
-
- if (decoded_oid) g_free(decoded_oid);
- g_free(non_decoded_oid);
+ if (! key ) {
+ *error = "User has no authKey";
+ return FALSE;
+ }
- }
- offset += sequence_length;
- variable_bindings_length -= sequence_length;
+ auth_len = tvb_length_remaining(p->auth_tvb,0);
- /*
- * Register a cleanup function in case one of our
- * tvbuff accesses throws an exception. We need
- * to clean up variable_oid.
- */
- CLEANUP_PUSH(g_free, variable_oid);
-
- /* Parse the variable's value */
- next_tvb = NULL;
- ret = snmp_variable_decode(tree, variable_oid,
- variable_oid_length, &asn1, offset, &length, &next_tvb);
- if (next_tvb) {
- new_format_oid(variable_oid, variable_oid_length,
- &non_decoded_oid, &decoded_oid);
- dissector_try_string(variable_oid_dissector_table,
- non_decoded_oid, next_tvb, pinfo, root_tree);
- if (decoded_oid)
- g_free(decoded_oid);
- g_free(non_decoded_oid);
- }
+ if (auth_len != 12) {
+ *error = "Authenticator length wrong";
+ return FALSE;
+ }
- /*
- * We're done with variable_oid, so we can call the cleanup
- * handler to free* it, and then pop the cleanup handler.
- */
- CLEANUP_CALL_AND_POP;
+ msg_len = tvb_length_remaining(p->msg_tvb,0);
+ msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, tree,
- "variable", ret);
- return;
- }
- offset += length;
- variable_bindings_length -= length;
+
+ auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
+
+ start = p->auth_offset - p->start_offset;
+ end = start + auth_len;
+
+ /* fill the authenticator with zeros */
+ for ( i = start ; i < end ; i++ ) {
+ msg[i] = '\0';
}
+
+ calc_auth = ep_alloc(16);
+
+ md5_hmac(msg, msg_len, key, key_len, calc_auth);
+
+ if (calc_auth_p) *calc_auth_p = calc_auth;
+ if (calc_auth_len_p) *calc_auth_len_p = 12;
+
+ return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
}
-static const value_string qos_vals[] = {
- { 0x0, "No authentication or privacy" },
- { 0x1, "Authentication, no privacy" },
- { 0x2, "Authentication and privacy" },
- { 0x3, "Authentication and privacy" },
- { 0, NULL },
-};
-static void
-dissect_snmp2u_parameters(proto_tree *tree, tvbuff_t *tvb, int offset, int length,
- guchar *parameters, int parameters_length)
+static gboolean
+snmp_usm_auth_sha1(snmp_usm_params_t* p _U_, guint8** calc_auth_p, guint* calc_auth_len_p, gchar const** error _U_)
{
- proto_item *item;
- proto_tree *parameters_tree;
- proto_tree *qos_tree;
- guint8 model;
- guint8 qos;
- guint8 len;
-
- item = proto_tree_add_text(tree, tvb, offset, length,
- "Parameters");
- parameters_tree = proto_item_add_subtree(item, ett_parameters);
- offset += length - parameters_length;
-
- if (parameters_length < 1)
- return;
- model = *parameters;
- proto_tree_add_text(parameters_tree, tvb, offset, 1,
- "model: %u", model);
- offset += 1;
- parameters += 1;
- parameters_length -= 1;
- if (model != 1) {
- /* Unknown model. */
- proto_tree_add_text(parameters_tree, tvb, offset, parameters_length, "parameters: %s",
- bytes_to_str(parameters, parameters_length));
- return;
+ guint msg_len;
+ guint8* msg;
+ guint auth_len;
+ guint8* auth;
+ guint8* key;
+ guint key_len;
+ guint8 *calc_auth;
+ guint start;
+ guint end;
+ guint i;
+
+ if (!p->auth_tvb) {
+ *error = "No Authenticator";
+ return FALSE;
}
- if (parameters_length < 1)
- return;
- qos = *parameters;
- item = proto_tree_add_text(parameters_tree, tvb, offset, 1,
- "qoS: 0x%x", qos);
- qos_tree = proto_item_add_subtree(item, ett_parameters_qos);
- proto_tree_add_text(qos_tree, tvb, offset, 1, "%s",
- decode_boolean_bitfield(qos, 0x04,
- 8, "Generation of report PDU allowed",
- "Generation of report PDU not allowed"));
- proto_tree_add_text(qos_tree, tvb, offset, 1, "%s",
- decode_enumerated_bitfield(qos, 0x03,
- 8, qos_vals, "%s"));
- offset += 1;
- parameters += 1;
- parameters_length -= 1;
-
- if (parameters_length < 12)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, 12,
- "agentID: %s", bytes_to_str(parameters, 12));
- offset += 12;
- parameters += 12;
- parameters_length -= 12;
+ key = p->user_assoc->user.authKey.data;
+ key_len = p->user_assoc->user.authKey.len;
- if (parameters_length < 4)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, 4,
- "agentBoots: %u", pntohl(parameters));
- offset += 4;
- parameters += 4;
- parameters_length -= 4;
+ if (! key ) {
+ *error = "User has no authKey";
+ return FALSE;
+ }
- if (parameters_length < 4)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, 4,
- "agentTime: %u", pntohl(parameters));
- offset += 4;
- parameters += 4;
- parameters_length -= 4;
- if (parameters_length < 2)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, 2,
- "maxSize: %u", pntohs(parameters));
- offset += 2;
- parameters += 2;
- parameters_length -= 2;
+ auth_len = tvb_length_remaining(p->auth_tvb,0);
- if (parameters_length < 1)
- return;
- len = *parameters;
- proto_tree_add_text(parameters_tree, tvb, offset, 1,
- "userLen: %u", len);
- offset += 1;
- parameters += 1;
- parameters_length -= 1;
-
- if (parameters_length < len)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, len,
- "userName: %.*s", len, parameters);
- offset += len;
- parameters += len;
- parameters_length -= len;
- if (parameters_length < 1)
- return;
- len = *parameters;
- proto_tree_add_text(parameters_tree, tvb, offset, 1,
- "authLen: %u", len);
- offset += 1;
- parameters += 1;
- parameters_length -= 1;
-
- if (parameters_length < len)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, len,
- "authDigest: %s", bytes_to_str(parameters, len));
- offset += len;
- parameters += len;
- parameters_length -= len;
+ if (auth_len != 12) {
+ *error = "Authenticator length wrong";
+ return FALSE;
+ }
+
+ msg_len = tvb_length_remaining(p->msg_tvb,0);
+ msg = ep_tvb_memdup(p->msg_tvb,0,msg_len);
+
+ auth = ep_tvb_memdup(p->auth_tvb,0,auth_len);
+
+ start = p->auth_offset - p->start_offset;
+ end = start + auth_len;
+
+ /* fill the authenticator with zeros */
+ for ( i = start ; i < end ; i++ ) {
+ msg[i] = '\0';
+ }
+
+ calc_auth = ep_alloc(20);
+
+ sha1_hmac(key, key_len, msg, msg_len, calc_auth);
+
+ if (calc_auth_p) *calc_auth_p = calc_auth;
+ if (calc_auth_len_p) *calc_auth_len_p = 12;
+
+ return ( memcmp(auth,calc_auth,12) != 0 ) ? FALSE : TRUE;
+}
+
+static tvbuff_t*
+snmp_usm_priv_des(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData _U_, gchar const** error _U_)
+{
+#ifdef HAVE_LIBGCRYPT
+ gcry_error_t err;
+ gcry_cipher_hd_t hd = NULL;
+
+ guint8* cleartext;
+ guint8* des_key = p->user_assoc->user.privKey.data; /* first 8 bytes */
+ guint8* pre_iv = &(p->user_assoc->user.privKey.data[8]); /* last 8 bytes */
+ guint8* salt;
+ gint salt_len;
+ gint cryptgrm_len;
+ guint8* cryptgrm;
+ tvbuff_t* clear_tvb;
+ guint8 iv[8];
+ guint i;
+
+
+ salt_len = tvb_length_remaining(p->priv_tvb,0);
+
+ if (salt_len != 8) {
+ *error = "decryptionError: msgPrivacyParameters length != 8";
+ return NULL;
+ }
+
+ salt = ep_tvb_memdup(p->priv_tvb,0,salt_len);
+
+ /*
+ The resulting "salt" is XOR-ed with the pre-IV to obtain the IV.
+ */
+ for (i=0; i<8; i++) {
+ iv[i] = pre_iv[i] ^ salt[i];
+ }
+
+ cryptgrm_len = tvb_length_remaining(encryptedData,0);
+
+ if (cryptgrm_len % 8) {
+ *error = "decryptionError: the length of the encrypted data is not a mutiple of 8 octets";
+ return NULL;
+ }
+
+ cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
+
+ cleartext = ep_alloc(cryptgrm_len);
+
+ err = gcry_cipher_open(&hd, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_CBC, 0);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ err = gcry_cipher_setiv(hd, iv, 8);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ err = gcry_cipher_setkey(hd,des_key,8);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ gcry_cipher_close(hd);
+
+ clear_tvb = tvb_new_child_real_data(encryptedData, cleartext, cryptgrm_len, cryptgrm_len);
+
+ return clear_tvb;
+
+on_gcry_error:
+ *error = (void*)gpg_strerror(err);
+ if (hd) gcry_cipher_close(hd);
+ return NULL;
+#else
+ *error = "libgcrypt not present, cannot decrypt";
+ return NULL;
+#endif
+}
+
+static tvbuff_t*
+snmp_usm_priv_aes(snmp_usm_params_t* p _U_, tvbuff_t* encryptedData _U_, gchar const** error _U_)
+{
+#ifdef HAVE_LIBGCRYPT
+ gcry_error_t err;
+ gcry_cipher_hd_t hd = NULL;
+
+ guint8* cleartext;
+ guint8* aes_key = p->user_assoc->user.privKey.data; /* first 16 bytes */
+ guint8 iv[16];
+ gint priv_len;
+ gint cryptgrm_len;
+ guint8* cryptgrm;
+ tvbuff_t* clear_tvb;
+
+ priv_len = tvb_length_remaining(p->priv_tvb,0);
+
+ if (priv_len != 8) {
+ *error = "decryptionError: msgPrivacyParameters length != 8";
+ return NULL;
+ }
+
+ iv[0] = (p->boots & 0xff000000) >> 24;
+ iv[1] = (p->boots & 0x00ff0000) >> 16;
+ iv[2] = (p->boots & 0x0000ff00) >> 8;
+ iv[3] = (p->boots & 0x000000ff);
+ iv[4] = (p->time & 0xff000000) >> 24;
+ iv[5] = (p->time & 0x00ff0000) >> 16;
+ iv[6] = (p->time & 0x0000ff00) >> 8;
+ iv[7] = (p->time & 0x000000ff);
+ tvb_memcpy(p->priv_tvb,&(iv[8]),0,8);
+
+ cryptgrm_len = tvb_length_remaining(encryptedData,0);
+ cryptgrm = ep_tvb_memdup(encryptedData,0,-1);
+
+ cleartext = ep_alloc(cryptgrm_len);
+
+ err = gcry_cipher_open(&hd, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_CFB, 0);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ err = gcry_cipher_setiv(hd, iv, 16);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ err = gcry_cipher_setkey(hd,aes_key,16);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ err = gcry_cipher_decrypt(hd, cleartext, cryptgrm_len, cryptgrm, cryptgrm_len);
+ if (err != GPG_ERR_NO_ERROR) goto on_gcry_error;
+
+ gcry_cipher_close(hd);
+
+ clear_tvb = tvb_new_child_real_data(encryptedData, cleartext, cryptgrm_len, cryptgrm_len);
+
+ return clear_tvb;
+
+on_gcry_error:
+ *error = (void*)gpg_strerror(err);
+ if (hd) gcry_cipher_close(hd);
+ return NULL;
+#else
+ *error = "libgcrypt not present, cannot decrypt";
+ return NULL;
+#endif
+}
+
+
+gboolean
+check_ScopedPdu(tvbuff_t* tvb)
+{
+ int offset;
+ gint8 class;
+ gboolean pc;
+ gint32 tag;
+ int hoffset, eoffset;
+ guint32 len;
+
+ offset = get_ber_identifier(tvb, 0, &class, &pc, &tag);
+ offset = get_ber_length(tvb, offset, NULL, NULL);
+
+ if ( ! (((class!=BER_CLASS_APP) && (class!=BER_CLASS_PRI) )
+ && ( (!pc) || (class!=BER_CLASS_UNI) || (tag!=BER_UNI_TAG_ENUMERATED) )
+ )) return FALSE;
+
+ if((tvb_get_guint8(tvb, offset)==0)&&(tvb_get_guint8(tvb, offset+1)==0))
+ return TRUE;
+
+ hoffset = offset;
+
+ offset = get_ber_identifier(tvb, offset, &class, &pc, &tag);
+ offset = get_ber_length(tvb, offset, &len, NULL);
+ eoffset = offset + len;
+
+ if (eoffset <= hoffset) return FALSE;
+
+ if ((class!=BER_CLASS_APP)&&(class!=BER_CLASS_PRI))
+ if( (class!=BER_CLASS_UNI)
+ ||((tag<BER_UNI_TAG_NumericString)&&(tag!=BER_UNI_TAG_OCTETSTRING)&&(tag!=BER_UNI_TAG_UTF8String)) )
+ return FALSE;
+
+ return TRUE;
+
+}
+
+
+/*--- Included file: packet-snmp-fn.c ---*/
+#line 1 "../../asn1/snmp/packet-snmp-fn.c"
+
+
+
+static int
+dissect_snmp_EnterpriseOID(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 64 "../../asn1/snmp/snmp.cnf"
+ const gchar* name;
+
+ offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &enterprise_oid);
+
+
+ if (display_oid && enterprise_oid) {
+ name = oid_resolved_from_string(enterprise_oid);
+ if (name) {
+ col_append_fstr (actx->pinfo->cinfo, COL_INFO, " %s", name);
+ }
+ }
+
+
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_OCTET_STRING_SIZE_4(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_NetworkAddress(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_OCTET_STRING_SIZE_4);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_INTEGER_0_4294967295(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_TimeTicks(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_INTEGER_0_4294967295);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_Integer32(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_ObjectName(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
+
+ return offset;
+}
+
+
+static const value_string snmp_Version_vals[] = {
+ { 0, "version-1" },
+ { 1, "v2c" },
+ { 2, "v2u" },
+ { 3, "snmpv3" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_Version(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_Community(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_INTEGER(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+static const value_string snmp_T_error_status_vals[] = {
+ { 0, "noError" },
+ { 1, "tooBig" },
+ { 2, "noSuchName" },
+ { 3, "badValue" },
+ { 4, "readOnly" },
+ { 5, "genErr" },
+ { 6, "noAccess" },
+ { 7, "wrongType" },
+ { 8, "wrongLength" },
+ { 9, "wrongEncoding" },
+ { 10, "wrongValue" },
+ { 11, "noCreation" },
+ { 12, "inconsistentValue" },
+ { 13, "resourceUnavailable" },
+ { 14, "commitFailed" },
+ { 15, "undoFailed" },
+ { 16, "authorizationError" },
+ { 17, "notWritable" },
+ { 18, "inconsistentName" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_T_error_status(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_NULL(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
+
+ return offset;
+}
+
+
+
+static const ber_sequence_t VarBindList_sequence_of[1] = {
+ { &hf_snmp_VarBindList_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBind },
+};
+
+static int
+dissect_snmp_VarBindList(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
+ VarBindList_sequence_of, hf_index, ett_snmp_VarBindList);
+
+ return offset;
+}
+
+
+static const ber_sequence_t PDU_sequence[] = {
+ { &hf_snmp_request_id , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
+ { &hf_snmp_error_status , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_error_status },
+ { &hf_snmp_error_index , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER },
+ { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ PDU_sequence, hf_index, ett_snmp_PDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_GetRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 0, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_GetNextRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 1, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_GetResponse_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 2, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_SetRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 3, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+static const value_string snmp_GenericTrap_vals[] = {
+ { 0, "coldStart" },
+ { 1, "warmStart" },
+ { 2, "linkDown" },
+ { 3, "linkUp" },
+ { 4, "authenticationFailure" },
+ { 5, "egpNeighborLoss" },
+ { 6, "enterpriseSpecific" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_GenericTrap(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &generic_trap);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_SpecificTrap(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 48 "../../asn1/snmp/snmp.cnf"
+ guint specific_trap;
+
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &specific_trap);
+
+
+ if (generic_trap == 6) { /* enterprise specific */
+ const gchar *specific_str = snmp_lookup_specific_trap (specific_trap);
+ if (specific_str) {
+ proto_item_append_text(actx->created_item, " (%s)", specific_str);
+ }
+ }
+
+
+ return offset;
+}
+
+
+static const ber_sequence_t Trap_PDU_U_sequence[] = {
+ { &hf_snmp_enterprise , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_EnterpriseOID },
+ { &hf_snmp_agent_addr , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_NetworkAddress },
+ { &hf_snmp_generic_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_GenericTrap },
+ { &hf_snmp_specific_trap , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_SpecificTrap },
+ { &hf_snmp_time_stamp , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_TimeTicks },
+ { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_Trap_PDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 40 "../../asn1/snmp/snmp.cnf"
+ generic_trap = 0;
+ enterprise_oid = NULL;
+
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ Trap_PDU_U_sequence, hf_index, ett_snmp_Trap_PDU_U);
+
+
+
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_Trap_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 4, TRUE, dissect_snmp_Trap_PDU_U);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_INTEGER_0_2147483647(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+static const ber_sequence_t BulkPDU_sequence[] = {
+ { &hf_snmp_bulkPDU_request_id, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Integer32 },
+ { &hf_snmp_non_repeaters , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
+ { &hf_snmp_max_repetitions, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
+ { &hf_snmp_variable_bindings, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_VarBindList },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_BulkPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ BulkPDU_sequence, hf_index, ett_snmp_BulkPDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_GetBulkRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 5, TRUE, dissect_snmp_BulkPDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_InformRequest_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 6, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_SNMPv2_Trap_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 7, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_Report_PDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_CON, 8, TRUE, dissect_snmp_PDU);
+
+ return offset;
+}
+
+
+static const value_string snmp_PDUs_vals[] = {
+ { 0, "get-request" },
+ { 1, "get-next-request" },
+ { 2, "get-response" },
+ { 3, "set-request" },
+ { 4, "trap" },
+ { 5, "getBulkRequest" },
+ { 6, "informRequest" },
+ { 7, "snmpV2-trap" },
+ { 8, "report" },
+ { 0, NULL }
+};
+
+static const ber_choice_t PDUs_choice[] = {
+ { 0, &hf_snmp_get_request , BER_CLASS_CON, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_GetRequest_PDU },
+ { 1, &hf_snmp_get_next_request, BER_CLASS_CON, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_GetNextRequest_PDU },
+ { 2, &hf_snmp_get_response , BER_CLASS_CON, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_GetResponse_PDU },
+ { 3, &hf_snmp_set_request , BER_CLASS_CON, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_SetRequest_PDU },
+ { 4, &hf_snmp_trap , BER_CLASS_CON, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_Trap_PDU },
+ { 5, &hf_snmp_getBulkRequest , BER_CLASS_CON, 5, BER_FLAGS_NOOWNTAG, dissect_snmp_GetBulkRequest_PDU },
+ { 6, &hf_snmp_informRequest , BER_CLASS_CON, 6, BER_FLAGS_NOOWNTAG, dissect_snmp_InformRequest_PDU },
+ { 7, &hf_snmp_snmpV2_trap , BER_CLASS_CON, 7, BER_FLAGS_NOOWNTAG, dissect_snmp_SNMPv2_Trap_PDU },
+ { 8, &hf_snmp_report , BER_CLASS_CON, 8, BER_FLAGS_NOOWNTAG, dissect_snmp_Report_PDU },
+ { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_PDUs(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 28 "../../asn1/snmp/snmp.cnf"
+gint pdu_type=-1;
+
+ col_clear(actx->pinfo->cinfo, COL_INFO);
+
+ offset = dissect_ber_choice(actx, tree, tvb, offset,
+ PDUs_choice, hf_index, ett_snmp_PDUs,
+ &pdu_type);
+
+ if( (pdu_type!=-1) && snmp_PDUs_vals[pdu_type].strptr ){
+ col_prepend_fstr(actx->pinfo->cinfo, COL_INFO, "%s", snmp_PDUs_vals[pdu_type].strptr);
+ }
+
+
+
+ return offset;
+}
+
+
+static const ber_sequence_t Message_sequence[] = {
+ { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
+ { &hf_snmp_community , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_Community },
+ { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_Message(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ Message_sequence, hf_index, ett_snmp_Message);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_OCTET_STRING(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+static const value_string snmp_T_datav2u_vals[] = {
+ { 0, "plaintext" },
+ { 1, "encrypted" },
+ { 0, NULL }
+};
+
+static const ber_choice_t T_datav2u_choice[] = {
+ { 0, &hf_snmp_v2u_plaintext , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
+ { 1, &hf_snmp_encrypted , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
+ { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_T_datav2u(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_choice(actx, tree, tvb, offset,
+ T_datav2u_choice, hf_index, ett_snmp_T_datav2u,
+ NULL);
+
+ return offset;
+}
+
+
+static const ber_sequence_t Messagev2u_sequence[] = {
+ { &hf_snmp_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
+ { &hf_snmp_parameters , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
+ { &hf_snmp_datav2u , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_T_datav2u },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_Messagev2u(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ Messagev2u_sequence, hf_index, ett_snmp_Messagev2u);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_SnmpEngineID(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 99 "../../asn1/snmp/snmp.cnf"
+ tvbuff_t* param_tvb = NULL;
+
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ ¶m_tvb);
+ if (param_tvb) {
+ proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
+ dissect_snmp_engineid(engine_tree, param_tvb, 0, tvb_length_remaining(param_tvb,0));
+ }
+
+
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgAuthoritativeEngineID(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 90 "../../asn1/snmp/snmp.cnf"
+
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &usm_p.engine_tvb);
+ if (usm_p.engine_tvb) {
+ proto_tree* engine_tree = proto_item_add_subtree(actx->created_item,ett_engineid);
+ dissect_snmp_engineid(engine_tree, usm_p.engine_tvb, 0, tvb_length_remaining(usm_p.engine_tvb,0));
+ }
+
+
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgAuthoritativeEngineBoots(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &usm_p.boots);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgAuthoritativeEngineTime(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &usm_p.time);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgUserName(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &usm_p.user_tvb);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgAuthenticationParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 112 "../../asn1/snmp/snmp.cnf"
+ offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_index, &usm_p.auth_tvb);
+ if (usm_p.auth_tvb) {
+ usm_p.auth_item = actx->created_item;
+ usm_p.auth_offset = tvb_offset_from_real_beginning(usm_p.auth_tvb);
+ }
+
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgPrivacyParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &usm_p.priv_tvb);
+
+ return offset;
+}
+
+
+static const ber_sequence_t UsmSecurityParameters_sequence[] = {
+ { &hf_snmp_msgAuthoritativeEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineID },
+ { &hf_snmp_msgAuthoritativeEngineBoots, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineBoots },
+ { &hf_snmp_msgAuthoritativeEngineTime, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthoritativeEngineTime },
+ { &hf_snmp_msgUserName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgUserName },
+ { &hf_snmp_msgAuthenticationParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgAuthenticationParameters },
+ { &hf_snmp_msgPrivacyParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgPrivacyParameters },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_UsmSecurityParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ UsmSecurityParameters_sequence, hf_index, ett_snmp_UsmSecurityParameters);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_INTEGER_484_2147483647(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgFlags(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 227 "../../asn1/snmp/snmp.cnf"
+ tvbuff_t *parameter_tvb = NULL;
+
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ ¶meter_tvb);
+
+ if (parameter_tvb){
+ guint8 v3_flags = tvb_get_guint8(parameter_tvb, 0);
+ proto_tree* flags_tree = proto_item_add_subtree(actx->created_item,ett_msgFlags);
+
+ proto_tree_add_item(flags_tree, hf_snmp_v3_flags_report, parameter_tvb, 0, 1, FALSE);
+ proto_tree_add_item(flags_tree, hf_snmp_v3_flags_crypt, parameter_tvb, 0, 1, FALSE);
+ proto_tree_add_item(flags_tree, hf_snmp_v3_flags_auth, parameter_tvb, 0, 1, FALSE);
+
+ usm_p.encrypted = v3_flags & TH_CRYPT ? TRUE : FALSE;
+ usm_p.authenticated = v3_flags & TH_AUTH ? TRUE : FALSE;
+ }
+
+
+
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgSecurityModel(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ &MsgSecurityModel);
+
+ return offset;
+}
+
+
+static const ber_sequence_t HeaderData_sequence[] = {
+ { &hf_snmp_msgID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_0_2147483647 },
+ { &hf_snmp_msgMaxSize , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_484_2147483647 },
+ { &hf_snmp_msgFlags , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgFlags },
+ { &hf_snmp_msgSecurityModel, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityModel },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_HeaderData(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ HeaderData_sequence, hf_index, ett_snmp_HeaderData);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_msgSecurityParameters(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 170 "../../asn1/snmp/snmp.cnf"
+
+ switch(MsgSecurityModel){
+ case SNMP_SEC_USM: /* 3 */
+ offset = dissect_snmp_UsmSecurityParameters(FALSE, tvb, offset+2, actx, tree, -1);
+ usm_p.user_assoc = get_user_assoc(usm_p.engine_tvb, usm_p.user_tvb);
+ break;
+ case SNMP_SEC_ANY: /* 0 */
+ case SNMP_SEC_V1: /* 1 */
+ case SNMP_SEC_V2C: /* 2 */
+ default:
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ break;
+ }
+
+
+
+ return offset;
+}
+
+
+static const ber_sequence_t ScopedPDU_sequence[] = {
+ { &hf_snmp_contextEngineID, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_SnmpEngineID },
+ { &hf_snmp_contextName , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
+ { &hf_snmp_data , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_PDUs },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_ScopedPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ ScopedPDU_sequence, hf_index, ett_snmp_ScopedPDU);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_T_encryptedPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+#line 121 "../../asn1/snmp/snmp.cnf"
+ tvbuff_t* crypt_tvb;
+ offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_snmp_encryptedPDU, &crypt_tvb);
+
+ if( usm_p.encrypted && crypt_tvb
+ && usm_p.user_assoc
+ && usm_p.user_assoc->user.privProtocol ) {
+
+ const gchar* error = NULL;
+ proto_tree* encryptedpdu_tree = proto_item_add_subtree(actx->created_item,ett_encryptedPDU);
+ tvbuff_t* cleartext_tvb = usm_p.user_assoc->user.privProtocol(&usm_p, crypt_tvb, &error );
+
+ if (! cleartext_tvb) {
+ proto_item* cause = proto_tree_add_text(encryptedpdu_tree, crypt_tvb, 0, -1,
+ "Failed to decrypt encryptedPDU: %s", error);
+
+ expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
+ "Failed to decrypt encryptedPDU: %s", error);
+
+ col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Failed to decrypt");
+
+ return offset;
+ } else {
+ proto_item* decrypted_item;
+ proto_tree* decrypted_tree;
+
+ if (! check_ScopedPdu(cleartext_tvb)) {
+ proto_item* cause = proto_tree_add_text(encryptedpdu_tree, cleartext_tvb, 0, -1,
+ "Decrypted data not formatted as expected, wrong key?");
+
+ expert_add_info_format(actx->pinfo, cause, PI_MALFORMED, PI_WARN,
+ "Decrypted data not formatted as expected");
+
+ col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: Decrypted data not formatted as expected");
+
+ return offset;
+ }
+
+
+ add_new_data_source(actx->pinfo, cleartext_tvb, "Decrypted ScopedPDU");
+
+ decrypted_item = proto_tree_add_item(encryptedpdu_tree, hf_snmp_decryptedPDU,cleartext_tvb,0,-1,FALSE);
+ decrypted_tree = proto_item_add_subtree(decrypted_item,ett_decrypted);
+ dissect_snmp_ScopedPDU(FALSE, cleartext_tvb, 0, actx, decrypted_tree, -1);
+ }
+ } else {
+ col_set_str(actx->pinfo->cinfo, COL_INFO, "encryptedPDU: privKey Unknown");
+ }
+
+
+
+ return offset;
+}
+
+
+static const value_string snmp_ScopedPduData_vals[] = {
+ { 0, "plaintext" },
+ { 1, "encryptedPDU" },
+ { 0, NULL }
+};
+
+static const ber_choice_t ScopedPduData_choice[] = {
+ { 0, &hf_snmp_plaintext , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_ScopedPDU },
+ { 1, &hf_snmp_encryptedPDU , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_encryptedPDU },
+ { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_ScopedPduData(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_choice(actx, tree, tvb, offset,
+ ScopedPduData_choice, hf_index, ett_snmp_ScopedPduData,
+ NULL);
+
+ return offset;
+}
+
+
+static const ber_sequence_t SNMPv3Message_sequence[] = {
+ { &hf_snmp_msgVersion , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_Version },
+ { &hf_snmp_msgGlobalData , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_snmp_HeaderData },
+ { &hf_snmp_msgSecurityParameters, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_T_msgSecurityParameters },
+ { &hf_snmp_msgData , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_snmp_ScopedPduData },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_SNMPv3Message(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ SNMPv3Message_sequence, hf_index, ett_snmp_SNMPv3Message);
+
+#line 185 "../../asn1/snmp/snmp.cnf"
+
+ if( usm_p.authenticated
+ && usm_p.user_assoc
+ && usm_p.user_assoc->user.authModel ) {
+ const gchar* error = NULL;
+ proto_item* authen_item;
+ proto_tree* authen_tree = proto_item_add_subtree(usm_p.auth_item,ett_authParameters);
+ guint8* calc_auth;
+ guint calc_auth_len;
+
+ usm_p.authOK = usm_p.user_assoc->user.authModel->authenticate( &usm_p, &calc_auth, &calc_auth_len, &error );
+
+ if (error) {
+ authen_item = proto_tree_add_text(authen_tree,tvb,0,0,"Error while verifying Message authenticity: %s", error);
+ PROTO_ITEM_SET_GENERATED(authen_item);
+ expert_add_info_format( actx->pinfo, authen_item, PI_MALFORMED, PI_ERROR, "Error while verifying Message authenticity: %s", error );
+ } else {
+ int severity;
+ gchar* msg;
+
+ authen_item = proto_tree_add_boolean(authen_tree, hf_snmp_msgAuthentication, tvb, 0, 0, usm_p.authOK);
+ PROTO_ITEM_SET_GENERATED(authen_item);
+
+ if (usm_p.authOK) {
+ msg = "SNMP Authentication OK";
+ severity = PI_CHAT;
+ } else {
+ gchar* calc_auth_str = bytestring_to_str(calc_auth,calc_auth_len,' ');
+ proto_item_append_text(authen_item, " calculated = %s", calc_auth_str);
+ msg = "SNMP Authentication Error";
+ severity = PI_WARN;
+ }
+
+ expert_add_info_format( actx->pinfo, authen_item, PI_CHECKSUM, severity, "%s", msg );
+ }
+ }
+
+
+ return offset;
+}
+
+
+static const value_string snmp_T_smux_version_vals[] = {
+ { 0, "version-1" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_T_smux_version(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_OBJECT_IDENTIFIER(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_DisplayString(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+static const ber_sequence_t SimpleOpen_U_sequence[] = {
+ { &hf_snmp_smux_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_smux_version },
+ { &hf_snmp_identity , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_OBJECT_IDENTIFIER },
+ { &hf_snmp_description , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_DisplayString },
+ { &hf_snmp_password , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_snmp_OCTET_STRING },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_SimpleOpen_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ SimpleOpen_U_sequence, hf_index, ett_snmp_SimpleOpen_U);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_SimpleOpen(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 0, TRUE, dissect_snmp_SimpleOpen_U);
+
+ return offset;
+}
+
+
+static const value_string snmp_OpenPDU_vals[] = {
+ { 0, "smux-simple" },
+ { 0, NULL }
+};
+
+static const ber_choice_t OpenPDU_choice[] = {
+ { 0, &hf_snmp_smux_simple , BER_CLASS_APP, 0, BER_FLAGS_NOOWNTAG, dissect_snmp_SimpleOpen },
+ { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_OpenPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_choice(actx, tree, tvb, offset,
+ OpenPDU_choice, hf_index, ett_snmp_OpenPDU,
+ NULL);
+
+ return offset;
+}
+
+
+static const value_string snmp_ClosePDU_U_vals[] = {
+ { 0, "goingDown" },
+ { 1, "unsupportedVersion" },
+ { 2, "packetFormat" },
+ { 3, "protocolError" },
+ { 4, "internalError" },
+ { 5, "authenticationFailure" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_ClosePDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_ClosePDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 1, TRUE, dissect_snmp_ClosePDU_U);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_INTEGER_M1_2147483647(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+static const value_string snmp_T_operation_vals[] = {
+ { 0, "delete" },
+ { 1, "readOnly" },
+ { 2, "readWrite" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_T_operation(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+static const ber_sequence_t RReqPDU_U_sequence[] = {
+ { &hf_snmp_subtree , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_snmp_ObjectName },
+ { &hf_snmp_priority , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_INTEGER_M1_2147483647 },
+ { &hf_snmp_operation , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_snmp_T_operation },
+ { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_RReqPDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+ RReqPDU_U_sequence, hf_index, ett_snmp_RReqPDU_U);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_RReqPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 2, TRUE, dissect_snmp_RReqPDU_U);
+
+ return offset;
+}
+
+
+static const value_string snmp_RRspPDU_U_vals[] = {
+ { -1, "failure" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_RRspPDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_RRspPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 3, TRUE, dissect_snmp_RRspPDU_U);
+
+ return offset;
+}
+
+
+static const value_string snmp_RegisterResponse_vals[] = {
+ { 0, "rRspPDU" },
+ { 1, "pDUs" },
+ { 0, NULL }
+};
+
+static const ber_choice_t RegisterResponse_choice[] = {
+ { 0, &hf_snmp_rRspPDU , BER_CLASS_APP, 3, BER_FLAGS_NOOWNTAG, dissect_snmp_RRspPDU },
+ { 1, &hf_snmp_pDUs , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_PDUs },
+ { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_RegisterResponse(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_choice(actx, tree, tvb, offset,
+ RegisterResponse_choice, hf_index, ett_snmp_RegisterResponse,
+ NULL);
+
+ return offset;
+}
+
+
+static const value_string snmp_SOutPDU_U_vals[] = {
+ { 0, "commit" },
+ { 1, "rollback" },
+ { 0, NULL }
+};
+
+
+static int
+dissect_snmp_SOutPDU_U(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+ NULL);
+
+ return offset;
+}
+
+
+
+static int
+dissect_snmp_SOutPDU(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_tagged_type(implicit_tag, actx, tree, tvb, offset,
+ hf_index, BER_CLASS_APP, 4, TRUE, dissect_snmp_SOutPDU_U);
+
+ return offset;
+}
+
+
+static const value_string snmp_SMUX_PDUs_vals[] = {
+ { 0, "open" },
+ { 1, "close" },
+ { 2, "registerRequest" },
+ { 3, "registerResponse" },
+ { 4, "commitOrRollback" },
+ { 0, NULL }
+};
+
+static const ber_choice_t SMUX_PDUs_choice[] = {
+ { 0, &hf_snmp_open , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_OpenPDU },
+ { 1, &hf_snmp_close , BER_CLASS_APP, 1, BER_FLAGS_NOOWNTAG, dissect_snmp_ClosePDU },
+ { 2, &hf_snmp_registerRequest, BER_CLASS_APP, 2, BER_FLAGS_NOOWNTAG, dissect_snmp_RReqPDU },
+ { 3, &hf_snmp_registerResponse, BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG, dissect_snmp_RegisterResponse },
+ { 4, &hf_snmp_commitOrRollback, BER_CLASS_APP, 4, BER_FLAGS_NOOWNTAG, dissect_snmp_SOutPDU },
+ { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_snmp_SMUX_PDUs(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+ offset = dissect_ber_choice(actx, tree, tvb, offset,
+ SMUX_PDUs_choice, hf_index, ett_snmp_SMUX_PDUs,
+ NULL);
+
+ return offset;
+}
+
+/*--- PDUs ---*/
- if (parameters_length < 1)
- return;
- proto_tree_add_text(parameters_tree, tvb, offset, parameters_length,
- "contextSelector: %s", bytes_to_str(parameters, parameters_length));
+static void dissect_SMUX_PDUs_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
+ asn1_ctx_t asn1_ctx;
+ asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
+ dissect_snmp_SMUX_PDUs(FALSE, tvb, 0, &asn1_ctx, tree, hf_snmp_SMUX_PDUs_PDU);
}
+
+/*--- End of included file: packet-snmp-fn.c ---*/
+#line 1496 "../../asn1/snmp/packet-snmp-template.c"
+
+
guint
dissect_snmp_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
- proto_tree *tree, int proto, gint ett, gboolean is_tcp)
+ proto_tree *tree, int proto, gint ett, gboolean is_tcp)
{
+
guint length_remaining;
- ASN1_SCK asn1;
- int start;
- gboolean def;
- gboolean encrypted;
- guint length;
+ gint8 class;
+ gboolean pc, ind = 0;
+ gint32 tag;
+ guint32 len;
guint message_length;
- guint global_length;
-
- guint32 version;
- guint32 msgid;
- guint32 msgmax;
- guint32 msgsec;
- guint32 engineboots;
- guint32 enginetime;
-
- guchar *msgflags;
- gchar *commustr;
- guchar *community;
- guchar *secparm;
- guchar *cengineid;
- guchar *cname;
- guchar *cryptpdu;
- guchar *aengineid;
- guchar *username;
- guchar *authpar;
- guchar *privpar;
- guint msgflags_length;
- guint community_length;
- guint secparm_length;
- guint cengineid_length;
- guint cname_length;
- guint cryptpdu_length;
- guint aengineid_length;
- guint username_length;
- guint authpar_length;
- guint privpar_length;
-
- guint pdu_type;
- guint pdu_length;
+ int start_offset = offset;
+ guint32 version = 0;
+ tvbuff_t *next_tvb;
proto_tree *snmp_tree = NULL;
- proto_tree *global_tree = NULL;
- proto_tree *flags_tree = NULL;
- proto_tree *secur_tree = NULL;
proto_item *item = NULL;
- int ret;
- guint cls, con, tag;
+ asn1_ctx_t asn1_ctx;
+ asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
+
+
+ usm_p.msg_tvb = tvb;
+ usm_p.start_offset = tvb_offset_from_real_beginning(tvb);
+ usm_p.engine_tvb = NULL;
+ usm_p.user_tvb = NULL;
+ usm_p.auth_item = NULL;
+ usm_p.auth_tvb = NULL;
+ usm_p.auth_offset = 0;
+ usm_p.priv_tvb = NULL;
+ usm_p.user_assoc = NULL;
+ usm_p.authenticated = FALSE;
+ usm_p.encrypted = FALSE;
+ usm_p.boots = 0;
+ usm_p.time = 0;
+ usm_p.authOK = FALSE;
/*
* This will throw an exception if we don't have any data left.
* This is TCP, and we should, and can, do reassembly.
*
* Is the "Sequence Of" header split across segment
- * boundaries? We requre at least 6 bytes for the
+ * boundaries? We require at least 6 bytes for the
* header, which allows for a 4-byte length (ASN.1
* BER).
*/
if (length_remaining < 6) {
+ /*
+ * Yes. Tell the TCP dissector where the data
+ * for this message starts in the data it handed
+ * us and that we need "some more data." Don't tell
+ * it exactly how many bytes we need because if/when
+ * we ask for even more (after the header) that will
+ * break reassembly.
+ */
pinfo->desegment_offset = offset;
- pinfo->desegment_len = 6 - length_remaining;
+ pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT;
/*
* Return 0, which means "I didn't dissect anything
* OK, try to read the "Sequence Of" header; this gets the total
* length of the SNMP message.
*/
- asn1_open(&asn1, tvb, offset);
- ret = asn1_sequence_decode(&asn1, &message_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- if (tree) {
- item = proto_tree_add_item(tree, proto, tvb, offset,
- -1, FALSE);
- snmp_tree = proto_item_add_subtree(item, ett);
- }
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message header", ret);
-
- /*
- * Return the length remaining in the tvbuff, so
- * if this is SNMP-over-TCP, our caller thinks there's
- * nothing left to dissect.
- */
- return length_remaining;
- }
+ /* Set tree to 0 to not display internal BER fields if option used.*/
+ offset = dissect_ber_identifier(pinfo, 0, tvb, offset, &class, &pc, &tag);
+ /*Get the total octet length of the SNMP data*/
+ offset = dissect_ber_length(pinfo, 0, tvb, offset, &len, &ind);
+ message_length = len + 2;
- /*
- * Add the length of the "Sequence Of" header to the message
- * length.
- */
- message_length += length;
- if (message_length < length) {
- /*
- * The message length was probably so large that the
- * total length overflowed.
- *
- * Report this as an error.
- */
- show_reported_bounds_error(tvb, pinfo, tree);
+ /*Get the SNMP version data*/
+ offset = dissect_ber_integer(FALSE, &asn1_ctx, 0, tvb, offset, -1, &version);
- /*
- * Return the length remaining in the tvbuff, so
- * if this is SNMP-over-TCP, our caller thinks there's
- * nothing left to dissect.
- */
- return length_remaining;
- }
/*
* If this is SNMP-over-TCP, we might have to do reassembly
* us, and how many more bytes we need, and
* return.
*/
- pinfo->desegment_offset = offset;
+ pinfo->desegment_offset = start_offset;
pinfo->desegment_len =
- message_length - length_remaining;
+ message_length - length_remaining;
/*
* Return 0, which means "I didn't dissect anything
}
}
- if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
- col_set_str(pinfo->cinfo, COL_PROTOCOL,
- proto_get_protocol_short_name(find_protocol_by_id(proto)));
- }
+ next_tvb_init(&var_list);
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL,
+ proto_get_protocol_short_name(find_protocol_by_id(proto)));
if (tree) {
- item = proto_tree_add_item(tree, proto, tvb, offset,
- message_length, FALSE);
+ item = proto_tree_add_item(tree, proto, tvb, start_offset,
+ message_length, ENC_BIG_ENDIAN);
snmp_tree = proto_item_add_subtree(item, ett);
}
- offset += length;
-
- ret = asn1_uint32_decode (&asn1, &version, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "version number", ret);
- return message_length;
- }
- if (snmp_tree) {
- proto_tree_add_uint(snmp_tree, hf_snmp_version, tvb, offset,
- length, version);
- }
- offset += length;
-
switch (version) {
- case SNMP_VERSION_1:
- case SNMP_VERSION_2c:
- ret = asn1_octet_string_decode (&asn1, &community,
- &community_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "community", ret);
- return message_length;
- }
- if (tree) {
- commustr = g_malloc(community_length+1);
- memcpy(commustr, community, community_length);
- commustr[community_length] = '\0';
-
- proto_tree_add_string(snmp_tree, hf_snmp_community,
- tvb, offset, length, commustr);
- g_free(commustr);
- }
- g_free(community);
- offset += length;
+ case 0: /* v1 */
+ case 1: /* v2c */
+ offset = dissect_snmp_Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
break;
- case SNMP_VERSION_2u:
- ret = asn1_octet_string_decode (&asn1, &community,
- &community_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "community (2u)", ret);
- return message_length;
- }
- if (tree) {
- dissect_snmp2u_parameters(snmp_tree, tvb, offset, length,
- community, community_length);
- }
- g_free(community);
- offset += length;
+ case 2: /* v2u */
+ offset = dissect_snmp_Messagev2u(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
break;
- case SNMP_VERSION_3:
- ret = asn1_sequence_decode(&asn1, &global_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message global header", ret);
- return message_length;
- }
- if (snmp_tree) {
- item = proto_tree_add_text(snmp_tree, tvb, offset,
- global_length + length, "Message Global Header");
- global_tree = proto_item_add_subtree(item, ett_global);
- proto_tree_add_text(global_tree, tvb, offset,
- length,
- "Message Global Header Length: %d", global_length);
- }
- offset += length;
- ret = asn1_uint32_decode (&asn1, &msgid, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message id", ret);
- return message_length;
- }
- if (global_tree) {
- proto_tree_add_text(global_tree, tvb, offset,
- length, "Message ID: %d", msgid);
- }
- offset += length;
- ret = asn1_uint32_decode (&asn1, &msgmax, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message max size", ret);
- return message_length;
- }
- if (global_tree) {
- proto_tree_add_text(global_tree, tvb, offset,
- length, "Message Max Size: %d", msgmax);
- }
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &msgflags,
- &msgflags_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message flags", ret);
- return message_length;
- }
- if (msgflags_length != 1) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message flags wrong length", ret);
- g_free(msgflags);
- return message_length;
- }
- if (global_tree) {
- item = proto_tree_add_uint_format(global_tree,
- hf_snmpv3_flags, tvb, offset, length,
- msgflags[0], "Flags: 0x%02x", msgflags[0]);
- flags_tree = proto_item_add_subtree(item, ett_flags);
- proto_tree_add_boolean(flags_tree, hf_snmpv3_flags_report,
- tvb, offset, length, msgflags[0]);
- proto_tree_add_boolean(flags_tree, hf_snmpv3_flags_crypt,
- tvb, offset, length, msgflags[0]);
- proto_tree_add_boolean(flags_tree, hf_snmpv3_flags_auth,
- tvb, offset, length, msgflags[0]);
- }
- encrypted = msgflags[0] & TH_CRYPT;
- g_free(msgflags);
- offset += length;
- ret = asn1_uint32_decode (&asn1, &msgsec, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "message security model", ret);
- return message_length;
- }
- if (global_tree) {
- proto_tree_add_text(global_tree, tvb, offset,
- length, "Message Security Model: %s",
- val_to_str(msgsec, sec_models,
- "Unknown model %#x"));
- }
- offset += length;
- switch(msgsec) {
- case SNMP_SEC_USM:
- start = asn1.offset;
- ret = asn1_header_decode (&asn1, &cls, &con, &tag,
- &def, &secparm_length);
- length = asn1.offset - start;
- if (cls != ASN1_UNI && con != ASN1_PRI &&
- tag != ASN1_OTS) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "Message Security Parameters",
- ASN1_ERR_WRONG_TYPE);
- return message_length;
- }
- if (snmp_tree) {
- item = proto_tree_add_text(snmp_tree, tvb,
- offset, secparm_length + length,
- "Message Security Parameters");
- secur_tree = proto_item_add_subtree(item,
- ett_secur);
- proto_tree_add_text(secur_tree, tvb, offset,
- length,
- "Message Security Parameters Length: %d",
- secparm_length);
- }
- offset += length;
- ret = asn1_sequence_decode(&asn1, &secparm_length,
- &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "USM sequence header", ret);
- return message_length;
- }
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &aengineid,
- &aengineid_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "authoritative engine id", ret);
- return message_length;
- }
- if (secur_tree) {
- proto_tree_add_text(secur_tree, tvb, offset,
- length, "Authoritative Engine ID: %s",
- bytes_to_str(aengineid, aengineid_length));
- }
- g_free(aengineid);
- offset += length;
- ret = asn1_uint32_decode (&asn1, &engineboots, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "engine boots", ret);
- return message_length;
- }
- if (secur_tree) {
- proto_tree_add_text(secur_tree, tvb,
- offset, length, "Engine Boots: %d",
- engineboots);
- }
- offset += length;
- ret = asn1_uint32_decode (&asn1, &enginetime, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "engine time", ret);
- return message_length;
- }
- if (secur_tree) {
- proto_tree_add_text(secur_tree, tvb,
- offset, length, "Engine Time: %d",
- enginetime);
- }
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &username,
- &username_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "user name", ret);
- return message_length;
- }
- if (secur_tree) {
- proto_tree_add_text(secur_tree, tvb, offset,
- length, "User Name: %s",
- SAFE_STRING(username, username_length));
- }
- g_free(username);
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &authpar,
- &authpar_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "authentication parameter", ret);
- return message_length;
- }
- if (secur_tree) {
- proto_tree_add_text(secur_tree, tvb, offset,
- length, "Authentication Parameter: %s",
- bytes_to_str(authpar, authpar_length));
- }
- g_free(authpar);
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &privpar,
- &privpar_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "privacy parameter", ret);
- return message_length;
- }
- if (secur_tree) {
- proto_tree_add_text(secur_tree, tvb, offset,
- length, "Privacy Parameter: %s",
- bytes_to_str(privpar, privpar_length));
- }
- g_free(privpar);
- offset += length;
- break;
- default:
- ret = asn1_octet_string_decode (&asn1,
- &secparm, &secparm_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "Message Security Parameters",
- ret);
- return message_length;
- }
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, tvb, offset,
- length,
- "Message Security Parameters Data"
- " (%d bytes)", secparm_length);
- }
- g_free(secparm);
- offset += length;
- break;
- }
- /* PDU starts here */
- if (encrypted) {
- ret = asn1_octet_string_decode (&asn1, &cryptpdu,
- &cryptpdu_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo,
- snmp_tree, "encrypted PDU header", ret);
- return message_length;
- }
- proto_tree_add_text(snmp_tree, tvb, offset, length,
- "Encrypted PDU (%d bytes)", length);
- g_free(cryptpdu);
- if (check_col(pinfo->cinfo, COL_INFO))
- col_set_str(pinfo->cinfo, COL_INFO, "Encrypted PDU");
- return message_length;
- }
- ret = asn1_sequence_decode(&asn1, &global_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "PDU header", ret);
- return message_length;
- }
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &cengineid,
- &cengineid_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "context engine id", ret);
- return message_length;
- }
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, tvb, offset, length,
- "Context Engine ID: %s",
- bytes_to_str(cengineid, cengineid_length));
- }
- g_free(cengineid);
- offset += length;
- ret = asn1_octet_string_decode (&asn1, &cname,
- &cname_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "context name", ret);
- return message_length;
- }
- if (snmp_tree) {
- proto_tree_add_text(snmp_tree, tvb, offset, length,
- "Context Name: %s",
- SAFE_STRING(cname, cname_length));
- }
- g_free(cname);
- offset += length;
+ /* v3 */
+ case 3:
+ offset = dissect_snmp_SNMPv3Message(FALSE , tvb, start_offset, &asn1_ctx, snmp_tree, -1);
break;
default:
- dissect_snmp_error(tvb, offset, pinfo, snmp_tree,
- "PDU for unknown version of SNMP");
- return message_length;
+ /*
+ * Return the length remaining in the tvbuff, so
+ * if this is SNMP-over-TCP, our caller thinks there's
+ * nothing left to dissect.
+ */
+ proto_tree_add_text(snmp_tree, tvb, offset, -1,"Unknown version");
+ return length_remaining;
+ break;
}
- start = asn1.offset;
- ret = asn1_header_decode (&asn1, &cls, &con, &pdu_type, &def,
- &pdu_length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "PDU type", ret);
- return message_length;
- }
- if (cls != ASN1_CTX || con != ASN1_CON) {
- dissect_snmp_parse_error(tvb, offset, pinfo, snmp_tree,
- "PDU type", ASN1_ERR_WRONG_TYPE);
- return message_length;
+ /* There may be appended data after the SNMP data, so treat as raw
+ * data which needs to be dissected in case of UDP as UDP is PDU oriented.
+ */
+ if((!is_tcp) && (length_remaining > (guint)offset)) {
+ next_tvb = tvb_new_subset_remaining(tvb, offset);
+ call_dissector(data_handle, next_tvb, pinfo, tree);
+ } else {
+ next_tvb_call(&var_list, pinfo, tree, NULL, data_handle);
}
- dissect_common_pdu(tvb, offset, pinfo, snmp_tree, tree, asn1, pdu_type, start);
- return message_length;
+
+ return offset;
}
-static void
-dissect_smux_pdu(tvbuff_t *tvb, int offset, packet_info *pinfo,
- proto_tree *tree, int proto, gint ett)
+static gint
+dissect_snmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
- ASN1_SCK asn1;
- int start;
- gboolean def;
- guint length;
-
- guint pdu_type;
- char *pdu_type_string;
- guint pdu_length;
-
- guint32 version;
- guint32 cause;
- guint32 priority;
- guint32 operation;
- guint32 commit;
-
- guchar *password;
- guint password_length;
-
- guchar *application;
- guint application_length;
-
- subid_t *regid;
- guint regid_length;
-
- gchar *oid_string;
-
- proto_tree *smux_tree = NULL;
- proto_item *item = NULL;
- int ret;
- guint cls, con;
-
- if (check_col(pinfo->cinfo, COL_PROTOCOL))
- col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMUX");
-
- if (tree) {
- item = proto_tree_add_item(tree, proto, tvb, offset, -1, FALSE);
- smux_tree = proto_item_add_subtree(item, ett);
- }
+ conversation_t *conversation;
+ int offset;
+ gint8 tmp_class;
+ gboolean tmp_pc;
+ gint32 tmp_tag;
+ guint32 tmp_length;
+ gboolean tmp_ind;
- /* NOTE: we have to parse the message piece by piece, since the
- * capture length may be less than the message length: a 'global'
- * parsing is likely to fail.
+ /*
+ * See if this looks like SNMP or not. if not, return 0 so
+ * wireshark can try som other dissector instead.
*/
- /* parse the SNMP header */
- asn1_open(&asn1, tvb, offset);
- start = asn1.offset;
- ret = asn1_header_decode (&asn1, &cls, &con, &pdu_type, &def,
- &pdu_length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "PDU type", ret);
- return;
- }
-
- /* Dissect SMUX here */
- if (cls == ASN1_APL && con == ASN1_CON && pdu_type == SMUX_MSG_OPEN) {
- pdu_type_string = val_to_str(pdu_type, smux_types,
- "Unknown PDU type %#x");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, pdu_type_string);
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(smux_tree, hf_smux_pdutype, tvb,
- offset, length, pdu_type);
- }
- offset += length;
- ret = asn1_uint32_decode (&asn1, &version, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "version", ret);
- return;
- }
- if (tree) {
- proto_tree_add_uint(smux_tree, hf_smux_version, tvb,
- offset, length, version);
- }
- offset += length;
-
- ret = asn1_oid_decode (&asn1, ®id, ®id_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "registration OID", ret);
- return;
- }
- if (tree) {
- oid_string = format_oid(regid, regid_length);
- proto_tree_add_text(smux_tree, tvb, offset, length,
- "Registration: %s", oid_string);
- g_free(oid_string);
- }
- g_free(regid);
- offset += length;
-
- ret = asn1_octet_string_decode (&asn1, &application,
- &application_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "application", ret);
- return;
- }
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset, length,
- "Application: %s",
- SAFE_STRING(application, application_length));
- }
- g_free(application);
- offset += length;
-
- ret = asn1_octet_string_decode (&asn1, &password,
- &password_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "password", ret);
- return;
- }
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset, length,
- "Password: %s",
- SAFE_STRING(password, password_length));
- }
- g_free(password);
- offset += length;
- return;
- }
- if (cls == ASN1_APL && con == ASN1_PRI && pdu_type == SMUX_MSG_CLOSE) {
- pdu_type_string = val_to_str(pdu_type, smux_types,
- "Unknown PDU type %#x");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, pdu_type_string);
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(smux_tree, hf_smux_pdutype, tvb,
- offset, length, pdu_type);
- }
- offset += length;
- ret = asn1_uint32_value_decode (&asn1, pdu_length, &cause);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "cause", ret);
- return;
- }
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset,
- pdu_length, "Cause: %s",
- val_to_str(cause, smux_close,
- "Unknown cause %#x"));
- }
- offset += pdu_length;
- return;
- }
- if (cls == ASN1_APL && con == ASN1_CON && pdu_type == SMUX_MSG_RREQ) {
- pdu_type_string = val_to_str(pdu_type, smux_types,
- "Unknown PDU type %#x");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, pdu_type_string);
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(smux_tree, hf_smux_pdutype, tvb,
- offset, length, pdu_type);
- }
- offset += length;
- ret = asn1_oid_decode (&asn1, ®id, ®id_length, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "registration subtree", ret);
- return;
- }
- if (tree) {
- oid_string = format_oid(regid, regid_length);
- proto_tree_add_text(smux_tree, tvb, offset, length,
- "Registration: %s", oid_string);
- g_free(oid_string);
- }
- g_free(regid);
- offset += length;
-
- ret = asn1_uint32_decode (&asn1, &priority, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "priority", ret);
- return;
- }
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset, length,
- "Priority: %d", priority);
- }
- offset += length;
-
- ret = asn1_uint32_decode (&asn1, &operation, &length);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "operation", ret);
- return;
- }
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset, length,
- "Operation: %s",
- val_to_str(operation, smux_rreq,
- "Unknown operation %#x"));
- }
- offset += length;
- return;
- }
- if (cls == ASN1_APL && con == ASN1_PRI && pdu_type == SMUX_MSG_RRSP) {
- pdu_type_string = val_to_str(pdu_type, smux_types,
- "Unknown PDU type %#x");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, pdu_type_string);
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(smux_tree, hf_smux_pdutype, tvb,
- offset, length, pdu_type);
- }
- offset += length;
- ret = asn1_uint32_value_decode (&asn1, pdu_length, &priority);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "priority", ret);
- return;
- }
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset,
- pdu_length, "%s",
- val_to_str(priority, smux_prio,
- "Priority: %#x"));
- }
- offset += pdu_length;
- return;
+ /* All SNMP packets are BER encoded and consist of a SEQUENCE
+ * that spans the entire PDU. The first item is an INTEGER that
+ * has the values 0-2 (version 1-3).
+ * if not it is not snmp.
+ */
+ /* SNMP starts with a SEQUENCE */
+ offset = get_ber_identifier(tvb, 0, &tmp_class, &tmp_pc, &tmp_tag);
+ if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_SEQUENCE)) {
+ return 0;
}
- if (cls == ASN1_APL && con == ASN1_PRI && pdu_type == SMUX_MSG_SOUT) {
- pdu_type_string = val_to_str(pdu_type, smux_types,
- "Unknown PDU type %#x");
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, pdu_type_string);
- length = asn1.offset - start;
- if (tree) {
- proto_tree_add_uint(smux_tree, hf_smux_pdutype, tvb,
- offset, length, pdu_type);
- }
- offset += length;
- ret = asn1_uint32_value_decode (&asn1, pdu_length, &commit);
- if (ret != ASN1_ERR_NOERROR) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "commit", ret);
- return;
+ /* then comes a length which spans the rest of the tvb */
+ offset = get_ber_length(tvb, offset, &tmp_length, &tmp_ind);
+ /* if(tmp_length!=(guint32)tvb_reported_length_remaining(tvb, offset)) {
+ * Losen the heuristic a bit to handle the case where data has intentionally
+ * been added after the snmp PDU ( UDP case)
+ */
+ if ( pinfo->ptype == PT_UDP ) {
+ if(tmp_length>(guint32)tvb_reported_length_remaining(tvb, offset)) {
+ return 0;
}
- if (tree) {
- proto_tree_add_text(smux_tree, tvb, offset,
- pdu_length, "%s",
- val_to_str(commit, smux_sout,
- "Unknown SOUT Value: %#x"));
+ }else{
+ if(tmp_length!=(guint32)tvb_reported_length_remaining(tvb, offset)) {
+ return 0;
}
- offset += pdu_length;
- return;
}
- if (cls != ASN1_CTX || con != ASN1_CON) {
- dissect_snmp_parse_error(tvb, offset, pinfo, smux_tree,
- "PDU type", ASN1_ERR_WRONG_TYPE);
- return;
+ /* then comes an INTEGER (version)*/
+ get_ber_identifier(tvb, offset, &tmp_class, &tmp_pc, &tmp_tag);
+ if((tmp_class!=BER_CLASS_UNI)||(tmp_tag!=BER_UNI_TAG_INTEGER)) {
+ return 0;
}
- dissect_common_pdu(tvb, offset, pinfo, smux_tree, tree, asn1, pdu_type, start);
-}
+ /* do we need to test that version is 0 - 2 (version1-3) ? */
-static void
-dissect_snmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
-{
- conversation_t *conversation;
/*
* The first SNMP packet goes to the SNMP port; the second one
* wildcarded, and give it the SNMP dissector as a dissector.
*/
if (pinfo->destport == UDP_PORT_SNMP) {
- conversation = find_conversation(&pinfo->src, &pinfo->dst, PT_UDP,
+ conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
pinfo->srcport, 0, NO_PORT_B);
- if (conversation == NULL) {
- conversation = conversation_new(&pinfo->src, &pinfo->dst, PT_UDP,
+ if( (conversation == NULL) || (conversation->dissector_handle!=snmp_handle) ) {
+ conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst, PT_UDP,
pinfo->srcport, 0, NO_PORT2);
conversation_set_dissector(conversation, snmp_handle);
}
}
- dissect_snmp_pdu(tvb, 0, pinfo, tree, proto_snmp, ett_snmp, FALSE);
+ return dissect_snmp_pdu(tvb, 0, pinfo, tree, proto_snmp, ett_snmp, FALSE);
}
static void
while (tvb_reported_length_remaining(tvb, offset) > 0) {
message_len = dissect_snmp_pdu(tvb, 0, pinfo, tree,
- proto_snmp, ett_snmp, TRUE);
+ proto_snmp, ett_snmp, TRUE);
if (message_len == 0) {
/*
* We don't have all the data for that message,
static void
dissect_smux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
- dissect_smux_pdu(tvb, 0, pinfo, tree, proto_smux, ett_smux);
+ proto_tree *smux_tree = NULL;
+ proto_item *item = NULL;
+
+ next_tvb_init(&var_list);
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMUX");
+
+ if (tree) {
+ item = proto_tree_add_item(tree, proto_smux, tvb, 0, -1, ENC_BIG_ENDIAN);
+ smux_tree = proto_item_add_subtree(item, ett_smux);
+ }
+
+ dissect_SMUX_PDUs_PDU(tvb, pinfo, smux_tree);
}
+
+/*
+ MD5 Password to Key Algorithm
+ from RFC 3414 A.2.1
+*/
static void
-process_prefs(void)
+snmp_usm_password_to_key_md5(const guint8 *password, guint passwordlen,
+ const guint8 *engineID, guint engineLength,
+ guint8 *key)
{
-#ifdef HAVE_SOME_SNMP
- gchar *tmp_mib_modules;
- static gboolean mibs_loaded = FALSE;
+ md5_state_t MD;
+ guint8 *cp, password_buf[64];
+ guint32 password_index = 0;
+ guint32 count = 0, i;
+ guint8 key1[16];
+ md5_init(&MD); /* initialize MD5 */
+
+ /**********************************************/
+ /* Use while loop until we've done 1 Megabyte */
+ /**********************************************/
+ while (count < 1048576) {
+ cp = password_buf;
+ for (i = 0; i < 64; i++) {
+ /*************************************************/
+ /* Take the next octet of the password, wrapping */
+ /* to the beginning of the password as necessary.*/
+ /*************************************************/
+ *cp++ = password[password_index++ % passwordlen];
+ }
+ md5_append(&MD, password_buf, 64);
+ count += 64;
+ }
+ md5_finish(&MD, key1); /* tell MD5 we're done */
+
+ /*****************************************************/
+ /* Now localize the key with the engineID and pass */
+ /* through MD5 to produce final key */
+ /* We ignore invalid engineLengths here. More strict */
+ /* checking is done in snmp_users_update_cb. */
+ /*****************************************************/
+
+ md5_init(&MD);
+ md5_append(&MD, key1, 16);
+ md5_append(&MD, engineID, engineLength);
+ md5_append(&MD, key1, 16);
+ md5_finish(&MD, key);
+
+ return;
+}
- if (mibs_loaded) {
- /*
- * Unload the MIBs, as we'll be reloading them based on
- * the current preference setting.
- */
- shutdown_mib(); /* unload MIBs */
+
+
+
+/*
+ SHA1 Password to Key Algorithm COPIED from RFC 3414 A.2.2
+ */
+
+static void
+snmp_usm_password_to_key_sha1(const guint8 *password, guint passwordlen,
+ const guint8 *engineID, guint engineLength,
+ guint8 *key)
+{
+ sha1_context SH;
+ guint8 *cp, password_buf[64];
+ guint32 password_index = 0;
+ guint32 count = 0, i;
+
+ sha1_starts(&SH); /* initialize SHA */
+
+ /**********************************************/
+ /* Use while loop until we've done 1 Megabyte */
+ /**********************************************/
+ while (count < 1048576) {
+ cp = password_buf;
+ for (i = 0; i < 64; i++) {
+ /*************************************************/
+ /* Take the next octet of the password, wrapping */
+ /* to the beginning of the password as necessary.*/
+ /*************************************************/
+ *cp++ = password[password_index++ % passwordlen];
+ }
+ sha1_update (&SH, password_buf, 64);
+ count += 64;
}
+ sha1_finish(&SH, key);
- /*
- * Cannot check if MIBS is already set, as it could be set by Ethereal.
- *
- * If we have a list of modules to load, put that list in MIBS,
- * otherwise clear MIBS.
- */
- if (mib_modules != NULL) {
- tmp_mib_modules = g_strconcat("MIBS=", mib_modules, NULL);
+ /*****************************************************/
+ /* Now localize the key with the engineID and pass */
+ /* through SHA to produce final key */
+ /* We ignore invalid engineLengths here. More strict */
+ /* checking is done in snmp_users_update_cb. */
+ /*****************************************************/
-#ifdef _WIN32
- _putenv(tmp_mib_modules);
-#else
- putenv(tmp_mib_modules);
-#endif /*_WIN32*/
- } else {
-#ifdef _WIN32
- _putenv("MIBS");
-#else
- putenv("MIBS");
-#endif /* _WIN32 */
+ sha1_starts(&SH);
+ sha1_update(&SH, key, 20);
+ sha1_update(&SH, engineID, engineLength);
+ sha1_update(&SH, key, 20);
+ sha1_finish(&SH, key);
+ return;
+ }
+
+
+static void
+process_prefs(void)
+{
+}
+
+static void*
+snmp_users_copy_cb(void* dest, const void* orig, size_t len _U_)
+{
+ const snmp_ue_assoc_t* o = orig;
+ snmp_ue_assoc_t* d = dest;
+
+ d->auth_model = o->auth_model;
+ d->user.authModel = auth_models[o->auth_model];
+
+ d->priv_proto = o->priv_proto;
+ d->user.privProtocol = priv_protos[o->priv_proto];
+
+ d->user.userName.data = g_memdup(o->user.userName.data,o->user.userName.len);
+ d->user.userName.len = o->user.userName.len;
+
+ d->user.authPassword.data = o->user.authPassword.data ? g_memdup(o->user.authPassword.data,o->user.authPassword.len) : NULL;
+ d->user.authPassword.len = o->user.authPassword.len;
+
+ d->user.privPassword.data = o->user.privPassword.data ? g_memdup(o->user.privPassword.data,o->user.privPassword.len) : NULL;
+ d->user.privPassword.len = o->user.privPassword.len;
+
+ d->engine.len = o->engine.len;
+ if (o->engine.data) {
+ d->engine.data = g_memdup(o->engine.data,o->engine.len);
}
- /*
- * Load the MIBs.
- */
- register_mib_handlers();
- read_premib_configs();
- init_mib();
- read_configs();
- mibs_loaded = TRUE;
-#endif /* HAVE_SOME_SNMP */
+ d->user.authKey.data = o->user.authKey.data ? g_memdup(o->user.authKey.data,o->user.authKey.len) : NULL;
+ d->user.authKey.len = o->user.authKey.len;
+
+ d->user.privKey.data = o->user.privKey.data ? g_memdup(o->user.privKey.data,o->user.privKey.len) : NULL;
+ d->user.privKey.len = o->user.privKey.len;
+
+ return d;
}
-void
-proto_register_snmp(void)
+static void
+snmp_users_free_cb(void* p)
{
-#if defined(_WIN32) && defined(HAVE_SOME_SNMP)
- char *mib_path;
-#define MIB_PATH_APPEND "snmp\\mibs"
-#endif
- gchar *tmp_mib_modules;
+ snmp_ue_assoc_t* ue = p;
+ g_free(ue->user.userName.data);
+ g_free(ue->user.authPassword.data);
+ g_free(ue->user.privPassword.data);
+ g_free(ue->user.authKey.data);
+ g_free(ue->user.privKey.data);
+ g_free(ue->engine.data);
+}
- static hf_register_info hf[] = {
- { &hf_snmp_version,
- { "Version", "snmp.version", FT_UINT8, BASE_DEC, VALS(versions),
- 0x0, "", HFILL }},
- { &hf_snmp_community,
- { "Community", "snmp.community", FT_STRING, BASE_NONE, NULL,
- 0x0, "", HFILL }},
- { &hf_snmp_request_id,
- { "Request Id", "snmp.id", FT_UINT32, BASE_HEX, NULL,
- 0x0, "Id for this transaction", HFILL }},
- { &hf_snmp_pdutype,
- { "PDU type", "snmp.pdutype", FT_UINT8, BASE_DEC, VALS(pdu_types),
- 0x0, "", HFILL }},
- { &hf_snmp_agent,
- { "Agent address", "snmp.agent", FT_IPv4, BASE_NONE, NULL,
- 0x0, "", HFILL }},
- { &hf_snmp_enterprise,
- { "Enterprise", "snmp.enterprise", FT_STRING, BASE_NONE, NULL,
- 0x0, "", HFILL }},
- { &hf_snmp_error_status,
- { "Error Status", "snmp.error", FT_UINT8, BASE_DEC, VALS(error_statuses),
- 0x0, "", HFILL }},
- { &hf_snmp_oid,
- { "Object identifier", "snmp.oid", FT_STRING, BASE_NONE, NULL,
- 0x0, "", HFILL }},
- { &hf_snmp_traptype,
- { "Trap type", "snmp.traptype", FT_UINT8, BASE_DEC, VALS(trap_types),
- 0x0, "", HFILL }},
- { &hf_snmp_spectraptype,
- { "Specific trap type", "snmp.spectraptype", FT_UINT32, BASE_DEC, NULL,
- 0x0, "", HFILL }},
- { &hf_snmp_timestamp,
- { "Timestamp", "snmp.timestamp", FT_UINT8, BASE_DEC, NULL,
- 0x0, "", HFILL }},
- { &hf_snmpv3_flags,
- { "SNMPv3 Flags", "snmpv3.flags", FT_UINT8, BASE_HEX, NULL,
- 0x0, "", HFILL }},
- { &hf_snmpv3_flags_auth,
- { "Authenticated", "snmpv3.flags.auth", FT_BOOLEAN, 8,
- TFS(&flags_set_truth), TH_AUTH, "", HFILL }},
- { &hf_snmpv3_flags_crypt,
- { "Encrypted", "snmpv3.flags.crypt", FT_BOOLEAN, 8,
- TFS(&flags_set_truth), TH_CRYPT, "", HFILL }},
- { &hf_snmpv3_flags_report,
- { "Reportable", "snmpv3.flags.report", FT_BOOLEAN, 8,
- TFS(&flags_set_truth), TH_REPORT, "", HFILL }},
- };
- static gint *ett[] = {
- &ett_snmp,
- &ett_parameters,
- &ett_parameters_qos,
- &ett_global,
- &ett_flags,
- &ett_secur,
- };
- module_t *snmp_module;
+static void
+snmp_users_update_cb(void* p _U_, const char** err)
+{
+ snmp_ue_assoc_t* ue = p;
+ GString* es = g_string_new("");
+ unsigned i;
-#ifdef HAVE_SOME_SNMP
+ *err = NULL;
-#ifdef _WIN32
- /* Set MIBDIRS so that the SNMP library can find its mibs. */
- /* XXX - Should we set MIBS or MIBFILES as well? */
+ if (num_ueas == 0)
+ /* Nothing to update */
+ return;
- mib_path = g_malloc (strlen(get_datafile_dir()) + strlen(MIB_PATH_APPEND) + 20);
- sprintf (mib_path, "MIBDIRS=%s\\%s", get_datafile_dir(), MIB_PATH_APPEND);
- /* Amazingly enough, Windows does not provide setenv(). */
- if (getenv("MIBDIRS") == NULL)
- _putenv(mib_path);
- g_free(mib_path);
+ if (! ue->user.userName.len)
+ g_string_append_printf(es,"no userName\n");
-#endif /* _WIN32 */
+ for (i=0; i<num_ueas-1; i++) {
+ snmp_ue_assoc_t* u = &(ueas[i]);
- /*
- * Suppress warnings about unknown tokens - we aren't initializing
- * UCD SNMP in its entirety, we're just initializing the
- * MIB-handling part because that's all we're using, which
- * means that entries in the configuration file for other
- * pars of the library will not be handled, and we don't want
- * the config file reading code to whine about that.
- */
- netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
- NETSNMP_DS_LIB_NO_TOKEN_WARNINGS, TRUE);
- netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID,
- NETSNMP_DS_LIB_PRINT_SUFFIX_ONLY, 2);
-#endif /* HAVE_SOME_SNMP */
- proto_snmp = proto_register_protocol("Simple Network Management Protocol",
- "SNMP", "snmp");
- proto_register_field_array(proto_snmp, hf, array_length(hf));
- proto_register_subtree_array(ett, array_length(ett));
- register_dissector("snmp", dissect_snmp, proto_snmp);
+ /* RFC 3411 section 5 */
+ if ((u->engine.len > 0) && (u->engine.len < 5 || u->engine.len > 32)) {
+ g_string_append_printf(es, "Invalid engineId length (%u). Must be between 5 and 32 (10 and 64 hex digits)\n", u->engine.len);
+ }
- /* Register configuration preferences */
- snmp_module = prefs_register_protocol(proto_snmp, process_prefs);
- prefs_register_bool_preference(snmp_module, "display_oid",
- "Show SNMP OID in info column",
- "Whether the SNMP OID should be shown in the info column",
- &display_oid);
- /*
- * Set the default value of "mib_modules".
- *
- * If the MIBS environment variable is set, make its value
- * the value of "mib_modules", otherwise, set "mib_modules"
- * to DEF_MIB_MODULES.
- */
- tmp_mib_modules = getenv("MIBS");
- if (tmp_mib_modules != NULL)
- mib_modules = tmp_mib_modules;
- prefs_register_string_preference(snmp_module, "mib_modules",
- "MIB modules to load",
- "List of MIB modules to load (the list is set to environment variable MIBS if the variable is not already set)",
- &mib_modules);
- prefs_register_bool_preference(snmp_module, "desegment",
- "Reassemble SNMP-over-TCP messages\nspanning multiple TCP segments",
- "Whether the SNMP dissector should reassemble messages spanning multiple TCP segments."
- " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
- &snmp_desegment);
+ if ( u->user.userName.len == ue->user.userName.len
+ && u->engine.len == ue->engine.len ) {
+
+ if (u->engine.len > 0 && memcmp( u->engine.data, ue->engine.data, u->engine.len ) == 0) {
+ if ( memcmp( u->user.userName.data, ue->user.userName.data, ue->user.userName.len ) == 0 ) {
+ /* XXX: make a string for the engineId */
+ g_string_append_printf(es,"Duplicate key (userName='%s')\n",ue->user.userName.data);
+ }
+ }
+
+ if (u->engine.len == 0) {
+ if ( memcmp( u->user.userName.data, ue->user.userName.data, ue->user.userName.len ) == 0 ) {
+ g_string_append_printf(es,"Duplicate key (userName='%s' engineId=NONE)\n",ue->user.userName.data);
+ }
+ }
+ }
+ }
+
+ if (es->len) {
+ g_string_truncate(es,es->len-1);
+ *err = ep_strdup(es->str);
+ }
+
+ g_string_free(es,TRUE);
+
+ return;
}
-void
-proto_reg_handoff_snmp(void)
+
+UAT_LSTRING_CB_DEF(snmp_users,userName,snmp_ue_assoc_t,user.userName.data,user.userName.len)
+UAT_LSTRING_CB_DEF(snmp_users,authPassword,snmp_ue_assoc_t,user.authPassword.data,user.authPassword.len)
+UAT_LSTRING_CB_DEF(snmp_users,privPassword,snmp_ue_assoc_t,user.privPassword.data,user.privPassword.len)
+UAT_BUFFER_CB_DEF(snmp_users,engine_id,snmp_ue_assoc_t,engine.data,engine.len)
+UAT_VS_DEF(snmp_users,auth_model,snmp_ue_assoc_t,0,"MD5")
+UAT_VS_DEF(snmp_users,priv_proto,snmp_ue_assoc_t,0,"DES")
+
+static void *
+snmp_specific_trap_copy_cb(void *dest, const void *orig, size_t len _U_)
+{
+ snmp_st_assoc_t *u = dest;
+ const snmp_st_assoc_t *o = orig;
+
+ u->enterprise = g_strdup(o->enterprise);
+ u->trap = o->trap;
+ u->desc = g_strdup(o->desc);
+
+ return dest;
+}
+
+static void
+snmp_specific_trap_free_cb(void *r)
{
+ snmp_st_assoc_t *u = r;
+
+ g_free(u->enterprise);
+ g_free(u->desc);
+}
+
+UAT_CSTRING_CB_DEF(specific_traps, enterprise, snmp_st_assoc_t)
+UAT_DEC_CB_DEF(specific_traps, trap, snmp_st_assoc_t)
+UAT_CSTRING_CB_DEF(specific_traps, desc, snmp_st_assoc_t)
+
+ /*--- proto_register_snmp -------------------------------------------*/
+void proto_register_snmp(void) {
+ /* List of fields */
+ static hf_register_info hf[] = {
+ { &hf_snmp_v3_flags_auth,
+ { "Authenticated", "snmp.v3.flags.auth", FT_BOOLEAN, 8,
+ TFS(&tfs_set_notset), TH_AUTH, NULL, HFILL }},
+ { &hf_snmp_v3_flags_crypt,
+ { "Encrypted", "snmp.v3.flags.crypt", FT_BOOLEAN, 8,
+ TFS(&tfs_set_notset), TH_CRYPT, NULL, HFILL }},
+ { &hf_snmp_v3_flags_report,
+ { "Reportable", "snmp.v3.flags.report", FT_BOOLEAN, 8,
+ TFS(&tfs_set_notset), TH_REPORT, NULL, HFILL }},
+ { &hf_snmp_engineid_conform, {
+ "Engine ID Conformance", "snmp.engineid.conform", FT_BOOLEAN, 8,
+ TFS(&tfs_snmp_engineid_conform), F_SNMP_ENGINEID_CONFORM, "Engine ID RFC3411 Conformance", HFILL }},
+ { &hf_snmp_engineid_enterprise, {
+ "Engine Enterprise ID", "snmp.engineid.enterprise", FT_UINT32, BASE_DEC|BASE_EXT_STRING,
+ &sminmpec_values_ext, 0, NULL, HFILL }},
+ { &hf_snmp_engineid_format, {
+ "Engine ID Format", "snmp.engineid.format", FT_UINT8, BASE_DEC,
+ VALS(snmp_engineid_format_vals), 0, NULL, HFILL }},
+ { &hf_snmp_engineid_ipv4, {
+ "Engine ID Data: IPv4 address", "snmp.engineid.ipv4", FT_IPv4, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_engineid_ipv6, {
+ "Engine ID Data: IPv6 address", "snmp.engineid.ipv6", FT_IPv6, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_engineid_cisco_type, {
+ "Engine ID Data: Cisco type", "snmp.engineid.cisco.type", FT_UINT8, BASE_NONE,
+ VALS(snmp_engineid_cisco_type_vals), 0, NULL, HFILL }},
+ { &hf_snmp_engineid_mac, {
+ "Engine ID Data: MAC address", "snmp.engineid.mac", FT_ETHER, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_engineid_text, {
+ "Engine ID Data: Text", "snmp.engineid.text", FT_STRING, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_engineid_time, {
+ "Engine ID Data: Creation Time", "snmp.engineid.time", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_engineid_data, {
+ "Engine ID Data", "snmp.engineid.data", FT_BYTES, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_msgAuthentication, {
+ "Authentication", "snmp.v3.auth", FT_BOOLEAN, BASE_NONE,
+ TFS(&auth_flags), 0, NULL, HFILL }},
+ { &hf_snmp_decryptedPDU, {
+ "Decrypted ScopedPDU", "snmp.decrypted_pdu", FT_BYTES, BASE_NONE,
+ NULL, 0, "Decrypted PDU", HFILL }},
+ { &hf_snmp_noSuchObject, {
+ "noSuchObject", "snmp.noSuchObject", FT_NONE, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_noSuchInstance, {
+ "noSuchInstance", "snmp.noSuchInstance", FT_NONE, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_endOfMibView, {
+ "endOfMibView", "snmp.endOfMibView", FT_NONE, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_unSpecified, {
+ "unSpecified", "snmp.unSpecified", FT_NONE, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+
+ { &hf_snmp_integer32_value, {
+ "Value (Integer32)", "snmp.value.int", FT_INT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_octetstring_value, {
+ "Value (OctetString)", "snmp.value.octets", FT_BYTES, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_oid_value, {
+ "Value (OID)", "snmp.value.oid", FT_OID, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_null_value, {
+ "Value (Null)", "snmp.value.null", FT_NONE, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_ipv4_value, {
+ "Value (IpAddress)", "snmp.value.ipv4", FT_IPv4, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_ipv6_value, {
+ "Value (IpAddress)", "snmp.value.ipv6", FT_IPv6, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_anyaddress_value, {
+ "Value (IpAddress)", "snmp.value.addr", FT_BYTES, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_unsigned32_value, {
+ "Value (Unsigned32)", "snmp.value.u32", FT_INT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_gauge32_value, {
+ "Value (Gauge32)", "snmp.value.g32", FT_INT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_unknown_value, {
+ "Value (Unknown)", "snmp.value.unk", FT_BYTES, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_counter_value, {
+ "Value (Counter32)", "snmp.value.counter", FT_UINT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_big_counter_value, {
+ "Value (Counter64)", "snmp.value.counter", FT_UINT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_nsap_value, {
+ "Value (NSAP)", "snmp.value.nsap", FT_UINT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_timeticks_value, {
+ "Value (Timeticks)", "snmp.value.timeticks", FT_UINT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_opaque_value, {
+ "Value (Opaque)", "snmp.value.opaque", FT_BYTES, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_objectname, {
+ "Object Name", "snmp.name", FT_OID, BASE_NONE,
+ NULL, 0, NULL, HFILL }},
+ { &hf_snmp_scalar_instance_index, {
+ "Scalar Instance Index", "snmp.name.index", FT_UINT64, BASE_DEC,
+ NULL, 0, NULL, HFILL }},
+
+
+
+/*--- Included file: packet-snmp-hfarr.c ---*/
+#line 1 "../../asn1/snmp/packet-snmp-hfarr.c"
+ { &hf_snmp_SMUX_PDUs_PDU,
+ { "SMUX-PDUs", "snmp.SMUX_PDUs",
+ FT_UINT32, BASE_DEC, VALS(snmp_SMUX_PDUs_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_version,
+ { "version", "snmp.version",
+ FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_community,
+ { "community", "snmp.community",
+ FT_STRING, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_data,
+ { "data", "snmp.data",
+ FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
+ "PDUs", HFILL }},
+ { &hf_snmp_parameters,
+ { "parameters", "snmp.parameters",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "OCTET_STRING", HFILL }},
+ { &hf_snmp_datav2u,
+ { "datav2u", "snmp.datav2u",
+ FT_UINT32, BASE_DEC, VALS(snmp_T_datav2u_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_v2u_plaintext,
+ { "plaintext", "snmp.plaintext",
+ FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
+ "PDUs", HFILL }},
+ { &hf_snmp_encrypted,
+ { "encrypted", "snmp.encrypted",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "OCTET_STRING", HFILL }},
+ { &hf_snmp_msgAuthoritativeEngineID,
+ { "msgAuthoritativeEngineID", "snmp.msgAuthoritativeEngineID",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgAuthoritativeEngineBoots,
+ { "msgAuthoritativeEngineBoots", "snmp.msgAuthoritativeEngineBoots",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgAuthoritativeEngineTime,
+ { "msgAuthoritativeEngineTime", "snmp.msgAuthoritativeEngineTime",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgUserName,
+ { "msgUserName", "snmp.msgUserName",
+ FT_STRING, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgAuthenticationParameters,
+ { "msgAuthenticationParameters", "snmp.msgAuthenticationParameters",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgPrivacyParameters,
+ { "msgPrivacyParameters", "snmp.msgPrivacyParameters",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgVersion,
+ { "msgVersion", "snmp.msgVersion",
+ FT_INT32, BASE_DEC, VALS(snmp_Version_vals), 0,
+ "Version", HFILL }},
+ { &hf_snmp_msgGlobalData,
+ { "msgGlobalData", "snmp.msgGlobalData",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "HeaderData", HFILL }},
+ { &hf_snmp_msgSecurityParameters,
+ { "msgSecurityParameters", "snmp.msgSecurityParameters",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgData,
+ { "msgData", "snmp.msgData",
+ FT_UINT32, BASE_DEC, VALS(snmp_ScopedPduData_vals), 0,
+ "ScopedPduData", HFILL }},
+ { &hf_snmp_msgID,
+ { "msgID", "snmp.msgID",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ "INTEGER_0_2147483647", HFILL }},
+ { &hf_snmp_msgMaxSize,
+ { "msgMaxSize", "snmp.msgMaxSize",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ "INTEGER_484_2147483647", HFILL }},
+ { &hf_snmp_msgFlags,
+ { "msgFlags", "snmp.msgFlags",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_msgSecurityModel,
+ { "msgSecurityModel", "snmp.msgSecurityModel",
+ FT_UINT32, BASE_DEC, VALS(sec_models), 0,
+ NULL, HFILL }},
+ { &hf_snmp_plaintext,
+ { "plaintext", "snmp.plaintext",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "ScopedPDU", HFILL }},
+ { &hf_snmp_encryptedPDU,
+ { "encryptedPDU", "snmp.encryptedPDU",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_contextEngineID,
+ { "contextEngineID", "snmp.contextEngineID",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "SnmpEngineID", HFILL }},
+ { &hf_snmp_contextName,
+ { "contextName", "snmp.contextName",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "OCTET_STRING", HFILL }},
+ { &hf_snmp_get_request,
+ { "get-request", "snmp.get_request",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "GetRequest_PDU", HFILL }},
+ { &hf_snmp_get_next_request,
+ { "get-next-request", "snmp.get_next_request",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "GetNextRequest_PDU", HFILL }},
+ { &hf_snmp_get_response,
+ { "get-response", "snmp.get_response",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "GetResponse_PDU", HFILL }},
+ { &hf_snmp_set_request,
+ { "set-request", "snmp.set_request",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "SetRequest_PDU", HFILL }},
+ { &hf_snmp_trap,
+ { "trap", "snmp.trap",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "Trap_PDU", HFILL }},
+ { &hf_snmp_getBulkRequest,
+ { "getBulkRequest", "snmp.getBulkRequest",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "GetBulkRequest_PDU", HFILL }},
+ { &hf_snmp_informRequest,
+ { "informRequest", "snmp.informRequest",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "InformRequest_PDU", HFILL }},
+ { &hf_snmp_snmpV2_trap,
+ { "snmpV2-trap", "snmp.snmpV2_trap",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "SNMPv2_Trap_PDU", HFILL }},
+ { &hf_snmp_report,
+ { "report", "snmp.report",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "Report_PDU", HFILL }},
+ { &hf_snmp_request_id,
+ { "request-id", "snmp.request_id",
+ FT_INT32, BASE_DEC, NULL, 0,
+ "INTEGER", HFILL }},
+ { &hf_snmp_error_status,
+ { "error-status", "snmp.error_status",
+ FT_INT32, BASE_DEC, VALS(snmp_T_error_status_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_error_index,
+ { "error-index", "snmp.error_index",
+ FT_INT32, BASE_DEC, NULL, 0,
+ "INTEGER", HFILL }},
+ { &hf_snmp_variable_bindings,
+ { "variable-bindings", "snmp.variable_bindings",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ "VarBindList", HFILL }},
+ { &hf_snmp_bulkPDU_request_id,
+ { "request-id", "snmp.request_id",
+ FT_INT32, BASE_DEC, NULL, 0,
+ "Integer32", HFILL }},
+ { &hf_snmp_non_repeaters,
+ { "non-repeaters", "snmp.non_repeaters",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ "INTEGER_0_2147483647", HFILL }},
+ { &hf_snmp_max_repetitions,
+ { "max-repetitions", "snmp.max_repetitions",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ "INTEGER_0_2147483647", HFILL }},
+ { &hf_snmp_enterprise,
+ { "enterprise", "snmp.enterprise",
+ FT_OID, BASE_NONE, NULL, 0,
+ "EnterpriseOID", HFILL }},
+ { &hf_snmp_agent_addr,
+ { "agent-addr", "snmp.agent_addr",
+ FT_IPv4, BASE_NONE, NULL, 0,
+ "NetworkAddress", HFILL }},
+ { &hf_snmp_generic_trap,
+ { "generic-trap", "snmp.generic_trap",
+ FT_INT32, BASE_DEC, VALS(snmp_GenericTrap_vals), 0,
+ "GenericTrap", HFILL }},
+ { &hf_snmp_specific_trap,
+ { "specific-trap", "snmp.specific_trap",
+ FT_INT32, BASE_DEC, NULL, 0,
+ "SpecificTrap", HFILL }},
+ { &hf_snmp_time_stamp,
+ { "time-stamp", "snmp.time_stamp",
+ FT_UINT32, BASE_DEC, NULL, 0,
+ "TimeTicks", HFILL }},
+ { &hf_snmp_name,
+ { "name", "snmp.name",
+ FT_OID, BASE_NONE, NULL, 0,
+ "ObjectName", HFILL }},
+ { &hf_snmp_valueType,
+ { "valueType", "snmp.valueType",
+ FT_NONE, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_VarBindList_item,
+ { "VarBind", "snmp.VarBind",
+ FT_NONE, BASE_NONE, NULL, 0,
+ NULL, HFILL }},
+ { &hf_snmp_open,
+ { "open", "snmp.open",
+ FT_UINT32, BASE_DEC, VALS(snmp_OpenPDU_vals), 0,
+ "OpenPDU", HFILL }},
+ { &hf_snmp_close,
+ { "close", "snmp.close",
+ FT_INT32, BASE_DEC, VALS(snmp_ClosePDU_U_vals), 0,
+ "ClosePDU", HFILL }},
+ { &hf_snmp_registerRequest,
+ { "registerRequest", "snmp.registerRequest",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "RReqPDU", HFILL }},
+ { &hf_snmp_registerResponse,
+ { "registerResponse", "snmp.registerResponse",
+ FT_UINT32, BASE_DEC, VALS(snmp_RegisterResponse_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_commitOrRollback,
+ { "commitOrRollback", "snmp.commitOrRollback",
+ FT_INT32, BASE_DEC, VALS(snmp_SOutPDU_U_vals), 0,
+ "SOutPDU", HFILL }},
+ { &hf_snmp_rRspPDU,
+ { "rRspPDU", "snmp.rRspPDU",
+ FT_INT32, BASE_DEC, VALS(snmp_RRspPDU_U_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_pDUs,
+ { "pDUs", "snmp.pDUs",
+ FT_UINT32, BASE_DEC, VALS(snmp_PDUs_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_smux_simple,
+ { "smux-simple", "snmp.smux_simple",
+ FT_NONE, BASE_NONE, NULL, 0,
+ "SimpleOpen", HFILL }},
+ { &hf_snmp_smux_version,
+ { "smux-version", "snmp.smux_version",
+ FT_INT32, BASE_DEC, VALS(snmp_T_smux_version_vals), 0,
+ NULL, HFILL }},
+ { &hf_snmp_identity,
+ { "identity", "snmp.identity",
+ FT_OID, BASE_NONE, NULL, 0,
+ "OBJECT_IDENTIFIER", HFILL }},
+ { &hf_snmp_description,
+ { "description", "snmp.description",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "DisplayString", HFILL }},
+ { &hf_snmp_password,
+ { "password", "snmp.password",
+ FT_BYTES, BASE_NONE, NULL, 0,
+ "OCTET_STRING", HFILL }},
+ { &hf_snmp_subtree,
+ { "subtree", "snmp.subtree",
+ FT_OID, BASE_NONE, NULL, 0,
+ "ObjectName", HFILL }},
+ { &hf_snmp_priority,
+ { "priority", "snmp.priority",
+ FT_INT32, BASE_DEC, NULL, 0,
+ "INTEGER_M1_2147483647", HFILL }},
+ { &hf_snmp_operation,
+ { "operation", "snmp.operation",
+ FT_INT32, BASE_DEC, VALS(snmp_T_operation_vals), 0,
+ NULL, HFILL }},
+
+/*--- End of included file: packet-snmp-hfarr.c ---*/
+#line 2148 "../../asn1/snmp/packet-snmp-template.c"
+ };
+
+ /* List of subtrees */
+ static gint *ett[] = {
+ &ett_snmp,
+ &ett_engineid,
+ &ett_msgFlags,
+ &ett_encryptedPDU,
+ &ett_decrypted,
+ &ett_authParameters,
+ &ett_internet,
+ &ett_varbind,
+ &ett_name,
+ &ett_value,
+ &ett_decoding_error,
+
+/*--- Included file: packet-snmp-ettarr.c ---*/
+#line 1 "../../asn1/snmp/packet-snmp-ettarr.c"
+ &ett_snmp_Message,
+ &ett_snmp_Messagev2u,
+ &ett_snmp_T_datav2u,
+ &ett_snmp_UsmSecurityParameters,
+ &ett_snmp_SNMPv3Message,
+ &ett_snmp_HeaderData,
+ &ett_snmp_ScopedPduData,
+ &ett_snmp_ScopedPDU,
+ &ett_snmp_PDUs,
+ &ett_snmp_PDU,
+ &ett_snmp_BulkPDU,
+ &ett_snmp_Trap_PDU_U,
+ &ett_snmp_VarBind,
+ &ett_snmp_VarBindList,
+ &ett_snmp_SMUX_PDUs,
+ &ett_snmp_RegisterResponse,
+ &ett_snmp_OpenPDU,
+ &ett_snmp_SimpleOpen_U,
+ &ett_snmp_RReqPDU_U,
+
+/*--- End of included file: packet-snmp-ettarr.c ---*/
+#line 2164 "../../asn1/snmp/packet-snmp-template.c"
+ };
+ module_t *snmp_module;
+
+ static uat_field_t users_fields[] = {
+ UAT_FLD_BUFFER(snmp_users,engine_id,"Engine ID","Engine-id for this entry (empty = any)"),
+ UAT_FLD_LSTRING(snmp_users,userName,"Username","The username"),
+ UAT_FLD_VS(snmp_users,auth_model,"Authentication model",auth_types,"Algorithm to be used for authentication."),
+ UAT_FLD_LSTRING(snmp_users,authPassword,"Password","The password used for authenticating packets for this entry"),
+ UAT_FLD_VS(snmp_users,priv_proto,"Privacy protocol",priv_types,"Algorithm to be used for privacy."),
+ UAT_FLD_LSTRING(snmp_users,privPassword,"Privacy password","The password used for encrypting packets for this entry"),
+ UAT_END_FIELDS
+ };
+
+ uat_t *assocs_uat = uat_new("SNMP Users",
+ sizeof(snmp_ue_assoc_t),
+ "snmp_users",
+ TRUE,
+ (void*)&ueas,
+ &num_ueas,
+ UAT_CAT_CRYPTO,
+ "ChSNMPUsersSection",
+ snmp_users_copy_cb,
+ snmp_users_update_cb,
+ snmp_users_free_cb,
+ renew_ue_cache,
+ users_fields);
+
+ static uat_field_t specific_traps_flds[] = {
+ UAT_FLD_CSTRING(specific_traps,enterprise,"Enterprise OID","Enterprise Object Identifier"),
+ UAT_FLD_DEC(specific_traps,trap,"Trap Id","The specific-trap value"),
+ UAT_FLD_CSTRING(specific_traps,desc,"Description","Trap type description"),
+ UAT_END_FIELDS
+ };
+
+ uat_t* specific_traps_uat = uat_new("SNMP Enterprise Specific Trap Types",
+ sizeof(snmp_st_assoc_t),
+ "snmp_specific_traps",
+ TRUE,
+ (void*) &specific_traps,
+ &num_specific_traps,
+ UAT_CAT_GENERAL,
+ "ChSNMPEnterpriseSpecificTrapTypes",
+ snmp_specific_trap_copy_cb,
+ NULL,
+ snmp_specific_trap_free_cb,
+ NULL,
+ specific_traps_flds);
+
+ /* Register protocol */
+ proto_snmp = proto_register_protocol(PNAME, PSNAME, PFNAME);
+ new_register_dissector("snmp", dissect_snmp, proto_snmp);
+
+ /* Register fields and subtrees */
+ proto_register_field_array(proto_snmp, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+
+ /* Register configuration preferences */
+ snmp_module = prefs_register_protocol(proto_snmp, process_prefs);
+ prefs_register_bool_preference(snmp_module, "display_oid",
+ "Show SNMP OID in info column",
+ "Whether the SNMP OID should be shown in the info column",
+ &display_oid);
+
+ prefs_register_obsolete_preference(snmp_module, "mib_modules");
+ prefs_register_obsolete_preference(snmp_module, "users_file");
+
+ prefs_register_bool_preference(snmp_module, "desegment",
+ "Reassemble SNMP-over-TCP messages\nspanning multiple TCP segments",
+ "Whether the SNMP dissector should reassemble messages spanning multiple TCP segments."
+ " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
+ &snmp_desegment);
+
+ prefs_register_bool_preference(snmp_module, "var_in_tree",
+ "Display dissected variables inside SNMP tree",
+ "ON - display dissected variables inside SNMP tree, OFF - display dissected variables in root tree after SNMP",
+ &snmp_var_in_tree);
+
+ prefs_register_uat_preference(snmp_module, "users_table",
+ "Users Table",
+ "Table of engine-user associations used for authentication and decryption",
+ assocs_uat);
+
+ prefs_register_uat_preference(snmp_module, "specific_traps_table",
+ "Enterprise Specific Trap Types",
+ "Table of enterprise specific-trap type descriptions",
+ specific_traps_uat);
+
+#ifdef HAVE_LIBSMI
+ prefs_register_static_text_preference(snmp_module, "info_mibs",
+ "MIB settings can be changed in the Name Resolution preferences",
+ "MIB settings can be changed in the Name Resolution preferences");
+#endif
+
+ value_sub_dissectors_table = register_dissector_table("snmp.variable_oid","SNMP Variable OID", FT_STRING, BASE_NONE);
+
+ register_init_routine(renew_ue_cache);
+
+ register_ber_syntax_dissector("SNMP", proto_snmp, dissect_snmp_tcp);
+}
+
+
+/*--- proto_reg_handoff_snmp ---------------------------------------*/
+void proto_reg_handoff_snmp(void) {
dissector_handle_t snmp_tcp_handle;
snmp_handle = find_dissector("snmp");
- dissector_add("udp.port", UDP_PORT_SNMP, snmp_handle);
- dissector_add("udp.port", UDP_PORT_SNMP_TRAP, snmp_handle);
- dissector_add("ethertype", ETHERTYPE_SNMP, snmp_handle);
- dissector_add("ipx.socket", IPX_SOCKET_SNMP_AGENT, snmp_handle);
- dissector_add("ipx.socket", IPX_SOCKET_SNMP_SINK, snmp_handle);
- dissector_add("hpext.dxsap", HPEXT_SNMP, snmp_handle);
+ dissector_add_uint("udp.port", UDP_PORT_SNMP, snmp_handle);
+ dissector_add_uint("udp.port", UDP_PORT_SNMP_TRAP, snmp_handle);
+ dissector_add_uint("udp.port", UDP_PORT_SNMP_PATROL, snmp_handle);
+ dissector_add_uint("ethertype", ETHERTYPE_SNMP, snmp_handle);
+ dissector_add_uint("ipx.socket", IPX_SOCKET_SNMP_AGENT, snmp_handle);
+ dissector_add_uint("ipx.socket", IPX_SOCKET_SNMP_SINK, snmp_handle);
+ dissector_add_uint("hpext.dxsap", HPEXT_SNMP, snmp_handle);
snmp_tcp_handle = create_dissector_handle(dissect_snmp_tcp, proto_snmp);
- dissector_add("tcp.port", TCP_PORT_SNMP, snmp_tcp_handle);
- dissector_add("tcp.port", TCP_PORT_SNMP_TRAP, snmp_tcp_handle);
+ dissector_add_uint("tcp.port", TCP_PORT_SNMP, snmp_tcp_handle);
+ dissector_add_uint("tcp.port", TCP_PORT_SNMP_TRAP, snmp_tcp_handle);
data_handle = find_dissector("data");
* that all dissector preferences have been registered).
*/
process_prefs();
+
}
void
static hf_register_info hf[] = {
{ &hf_smux_version,
{ "Version", "smux.version", FT_UINT8, BASE_DEC, NULL,
- 0x0, "", HFILL }},
+ 0x0, NULL, HFILL }},
{ &hf_smux_pdutype,
{ "PDU type", "smux.pdutype", FT_UINT8, BASE_DEC, VALS(smux_types),
- 0x0, "", HFILL }},
+ 0x0, NULL, HFILL }},
};
static gint *ett[] = {
&ett_smux,
proto_register_field_array(proto_smux, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
- variable_oid_dissector_table =
- register_dissector_table("snmp.variable_oid",
- "SNMP Variable OID", FT_STRING, BASE_NONE);
}
void
dissector_handle_t smux_handle;
smux_handle = create_dissector_handle(dissect_smux, proto_smux);
- dissector_add("tcp.port", TCP_PORT_SMUX, smux_handle);
+ dissector_add_uint("tcp.port", TCP_PORT_SMUX, smux_handle);
}
git.samba.org / obnox / wireshark / wip.git / blobdiff