forked from osmocom/wireshark
2400 lines
84 KiB
C
2400 lines
84 KiB
C
/* packet-ldap-template.c
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* Routines for ldap packet dissection
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*
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* See RFC 3494 (LDAP v2), RFC 4511 (LDAP v3), and RFC 2222 (SASL).
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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/*
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* This is not a complete implementation. It doesn't handle the full version 3, more specifically,
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* it handles only the commands of version 2, but any additional characteristics of the ver3 command are supported.
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* It's also missing extensible search filters.
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*
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* There should probably be a lot more error checking, I simply assume that if we have a full packet, it will be a complete
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* and correct packet.
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*
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* AFAIK, it will handle all messages used by the OpenLDAP 1.2.9 server and libraries which was my goal. I do plan to add
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* the remaining commands as time permits but this is not a priority to me. Send me an email if you need it and I'll see what
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* I can do.
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*
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* Doug Nazar
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* nazard@dragoninc.on.ca
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*/
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/*
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* 11/11/2002 - Fixed problem when decoding LDAP with desegmentation enabled and the
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* ASN.1 BER Universal Class Tag: "Sequence Of" header is encapsulated across 2
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* TCP segments.
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*
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* Ronald W. Henderson
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* ronald.henderson@cognicaseusa.com
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*/
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/*
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* 20-JAN-2004 - added decoding of MS-CLDAP netlogon RPC
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* using information from the SNIA 2003 conference paper :
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* Active Directory Domain Controller Location Service
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* by Anthony Liguori
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* ronnie sahlberg
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*/
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/*
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* 17-DEC-2004 - added basic decoding for LDAP Controls
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* 20-DEC-2004 - added handling for GSS-API encrypted blobs
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*
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* Stefan Metzmacher <metze@samba.org>
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*
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* 15-NOV-2005 - Changed to use the asn2wrs compiler
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* Anders Broman <anders.broman@ericsson.com>
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*/
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/*
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* 3-AUG-2008 - Extended the cldap support to include all netlogon data types.
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* Updated cldap_netlogon_flags to include Windows 2008 flags
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* Expanded the ntver ldap option with bit field
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*
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* Gary Reynolds <gazzadownunder@yahoo.co.uk>
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*/
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/*
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* 09-DEC-2009 - Added support for RFC4533
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* Content Synchronization Operation (aka syncrepl)
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* 11-DEC-2009 - Added support for IntermediateResponse (LDAP v3 from RFC 4511)
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* Mathieu Parent <math.parent@gmail.com>
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/exceptions.h>
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#include <epan/conversation.h>
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#include <epan/prefs.h>
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#include <epan/tap.h>
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#include <epan/srt_table.h>
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#include <epan/oids.h>
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#include <epan/strutil.h>
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#include <epan/show_exception.h>
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#include <epan/asn1.h>
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#include <epan/expert.h>
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#include <epan/uat.h>
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#include <wsutil/str_util.h>
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#include "packet-frame.h"
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#include "packet-tcp.h"
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#include "packet-windows-common.h"
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#include "packet-dcerpc.h"
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#include "packet-ldap.h"
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#include "packet-ntlmssp.h"
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#include "packet-tls.h"
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#include "packet-tls-utils.h"
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#include "packet-gssapi.h"
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#include "packet-acdr.h"
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#include "packet-ber.h"
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#include "packet-per.h"
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#include "packet-dns.h"
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#define PNAME "Lightweight Directory Access Protocol"
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#define PSNAME "LDAP"
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#define PFNAME "ldap"
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void proto_register_ldap(void);
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void proto_reg_handoff_ldap(void);
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/* Initialize the protocol and registered fields */
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static int ldap_tap = -1;
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static int proto_ldap = -1;
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static int proto_cldap = -1;
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static int hf_ldap_sasl_buffer_length = -1;
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static int hf_ldap_response_in = -1;
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static int hf_ldap_response_to = -1;
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static int hf_ldap_time = -1;
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static int hf_ldap_guid = -1;
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static int hf_mscldap_ntver_flags = -1;
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static int hf_mscldap_ntver_flags_v1 = -1;
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static int hf_mscldap_ntver_flags_v5 = -1;
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static int hf_mscldap_ntver_flags_v5ex = -1;
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static int hf_mscldap_ntver_flags_v5ep = -1;
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static int hf_mscldap_ntver_flags_vcs = -1;
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static int hf_mscldap_ntver_flags_vnt4 = -1;
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static int hf_mscldap_ntver_flags_vpdc = -1;
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static int hf_mscldap_ntver_flags_vip = -1;
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static int hf_mscldap_ntver_flags_vl = -1;
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static int hf_mscldap_ntver_flags_vgc = -1;
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static int hf_mscldap_netlogon_ipaddress_family = -1;
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static int hf_mscldap_netlogon_ipaddress_port = -1;
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static int hf_mscldap_netlogon_ipaddress = -1;
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static int hf_mscldap_netlogon_ipaddress_ipv4 = -1;
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static int hf_mscldap_netlogon_opcode = -1;
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static int hf_mscldap_netlogon_flags = -1;
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static int hf_mscldap_netlogon_flags_pdc = -1;
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static int hf_mscldap_netlogon_flags_gc = -1;
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static int hf_mscldap_netlogon_flags_ldap = -1;
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static int hf_mscldap_netlogon_flags_ds = -1;
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static int hf_mscldap_netlogon_flags_kdc = -1;
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static int hf_mscldap_netlogon_flags_timeserv = -1;
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static int hf_mscldap_netlogon_flags_closest = -1;
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static int hf_mscldap_netlogon_flags_writable = -1;
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static int hf_mscldap_netlogon_flags_good_timeserv = -1;
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static int hf_mscldap_netlogon_flags_ndnc = -1;
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static int hf_mscldap_netlogon_flags_fnc = -1;
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static int hf_mscldap_netlogon_flags_dnc = -1;
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static int hf_mscldap_netlogon_flags_dns = -1;
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static int hf_mscldap_netlogon_flags_wdc = -1;
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static int hf_mscldap_netlogon_flags_rodc = -1;
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static int hf_mscldap_domain_guid = -1;
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static int hf_mscldap_forest = -1;
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static int hf_mscldap_domain = -1;
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static int hf_mscldap_hostname = -1;
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static int hf_mscldap_nb_domain_z = -1;
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static int hf_mscldap_nb_domain = -1;
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static int hf_mscldap_nb_hostname_z = -1;
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static int hf_mscldap_nb_hostname = -1;
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static int hf_mscldap_username_z = -1;
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static int hf_mscldap_username = -1;
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static int hf_mscldap_sitename = -1;
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static int hf_mscldap_clientsitename = -1;
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static int hf_mscldap_netlogon_lm_token = -1;
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static int hf_mscldap_netlogon_nt_token = -1;
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static int hf_ldap_sid = -1;
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static int hf_ldap_AccessMask_ADS_CREATE_CHILD = -1;
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static int hf_ldap_AccessMask_ADS_DELETE_CHILD = -1;
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static int hf_ldap_AccessMask_ADS_LIST = -1;
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static int hf_ldap_AccessMask_ADS_SELF_WRITE = -1;
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static int hf_ldap_AccessMask_ADS_READ_PROP = -1;
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static int hf_ldap_AccessMask_ADS_WRITE_PROP = -1;
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static int hf_ldap_AccessMask_ADS_DELETE_TREE = -1;
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static int hf_ldap_AccessMask_ADS_LIST_OBJECT = -1;
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static int hf_ldap_AccessMask_ADS_CONTROL_ACCESS = -1;
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static int hf_ldap_LDAPMessage_PDU = -1;
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static int hf_ldap_object_security_flag = -1;
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static int hf_ldap_ancestor_first_flag = -1;
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static int hf_ldap_public_data_only_flag = -1;
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static int hf_ldap_incremental_value_flag = -1;
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static int hf_ldap_oid = -1;
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static int hf_ldap_gssapi_encrypted_payload = -1;
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#include "packet-ldap-hf.c"
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/* Initialize the subtree pointers */
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static gint ett_ldap = -1;
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static gint ett_ldap_msg = -1;
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static gint ett_ldap_sasl_blob = -1;
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static gint ett_ldap_payload = -1;
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static gint ett_mscldap_netlogon_flags = -1;
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static gint ett_mscldap_ntver_flags = -1;
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static gint ett_mscldap_ipdetails = -1;
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static gint ett_ldap_DirSyncFlagsSubEntry = -1;
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#include "packet-ldap-ett.c"
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static expert_field ei_ldap_exceeded_filter_length = EI_INIT;
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static expert_field ei_ldap_too_many_filter_elements = EI_INIT;
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static dissector_table_t ldap_name_dissector_table=NULL;
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static const char *object_identifier_id = NULL; /* LDAP OID */
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static gboolean do_protocolop = FALSE;
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static gchar *attr_type = NULL;
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static gboolean is_binary_attr_type = FALSE;
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static gboolean ldap_found_in_frame = FALSE;
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#define TCP_PORT_RANGE_LDAP "389,3268" /* 3268 is Windows 2000 Global Catalog */
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#define TCP_PORT_LDAPS 636
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#define UDP_PORT_CLDAP 389
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/* desegmentation of LDAP */
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static gboolean ldap_desegment = TRUE;
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static guint global_ldaps_tcp_port = TCP_PORT_LDAPS;
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static guint ssl_port = 0;
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static dissector_handle_t gssapi_handle;
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static dissector_handle_t gssapi_wrap_handle;
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static dissector_handle_t ntlmssp_handle;
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static dissector_handle_t spnego_handle;
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static dissector_handle_t tls_handle;
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static dissector_handle_t ldap_handle ;
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static void prefs_register_ldap(void); /* forward declaration for use in preferences registration */
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/* different types of rpc calls ontop of ms cldap */
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#define MSCLDAP_RPC_NETLOGON 1
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/* Message type Choice values */
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static const value_string ldap_ProtocolOp_choice_vals[] = {
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{ 0, "bindRequest" },
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{ 1, "bindResponse" },
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{ 2, "unbindRequest" },
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{ 3, "searchRequest" },
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{ 4, "searchResEntry" },
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{ 5, "searchResDone" },
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{ 6, "searchResRef" },
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{ 7, "modifyRequest" },
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{ 8, "modifyResponse" },
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{ 9, "addRequest" },
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{ 10, "addResponse" },
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{ 11, "delRequest" },
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{ 12, "delResponse" },
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{ 13, "modDNRequest" },
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{ 14, "modDNResponse" },
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{ 15, "compareRequest" },
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{ 16, "compareResponse" },
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{ 17, "abandonRequest" },
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{ 18, "extendedReq" },
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{ 19, "extendedResp" },
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{ 20, "intermediateResponse" },
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{ 0, NULL }
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};
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/* Procedure names (used in Service Response Time */
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const value_string ldap_procedure_names[] = {
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{ 0, "Bind" },
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{ 3, "Search" },
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{ 6, "Modify" },
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{ 8, "Add" },
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{ 10, "Delete" },
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{ 12, "Modrdn" },
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{ 14, "Compare" },
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{ 23, "Extended" },
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{ 0, NULL }
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};
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#define LOGON_PRIMARY_QUERY 7
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#define LOGON_PRIMARY_RESPONSE 12
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#define LOGON_SAM_LOGON_REQUEST 18
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#define LOGON_SAM_LOGON_RESPONSE 19
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#define LOGON_SAM_PAUSE_RESPONSE 20
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#define LOGON_SAM_USER_UNKNOWN 21
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#define LOGON_SAM_LOGON_RESPONSE_EX 23
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#define LOGON_SAM_PAUSE_RESPONSE_EX 24
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#define LOGON_SAM_USER_UNKNOWN_EX 25
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static const value_string netlogon_opcode_vals[] = {
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{ LOGON_PRIMARY_QUERY, "LOGON_PRIMARY_QUERY" },
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{ LOGON_PRIMARY_RESPONSE, "LOGON_PRIMARY_RESPONSE" },
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{ LOGON_SAM_LOGON_REQUEST, "LOGON_SAM_LOGON_REQUEST" },
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{ LOGON_SAM_LOGON_RESPONSE, "LOGON_SAM_LOGON_RESPONSE" },
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{ LOGON_SAM_PAUSE_RESPONSE, "LOGON_SAM_PAUSE_RESPONSE" },
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{ LOGON_SAM_LOGON_RESPONSE_EX, "LOGON_SAM_LOGON_RESPONSE_EX" },
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{ LOGON_SAM_PAUSE_RESPONSE_EX, "LOGON_SAM_PAUSE_RESPONSE_EX" },
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{ LOGON_SAM_USER_UNKNOWN_EX, "LOGON_SAM_USER_UNKNOWN_EX" },
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{ 0, NULL }
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};
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#define LDAP_NUM_PROCEDURES 24
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static void
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ldapstat_init(struct register_srt* srt _U_, GArray* srt_array)
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{
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srt_stat_table *ldap_srt_table;
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guint32 i;
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ldap_srt_table = init_srt_table("LDAP Commands", NULL, srt_array, LDAP_NUM_PROCEDURES, NULL, "ldap.protocolOp", NULL);
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for (i = 0; i < LDAP_NUM_PROCEDURES; i++)
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{
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init_srt_table_row(ldap_srt_table, i, val_to_str_const(i, ldap_procedure_names, "<unknown>"));
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}
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}
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static tap_packet_status
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ldapstat_packet(void *pldap, packet_info *pinfo, epan_dissect_t *edt _U_, const void *psi)
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{
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guint i = 0;
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srt_stat_table *ldap_srt_table;
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const ldap_call_response_t *ldap=(const ldap_call_response_t *)psi;
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srt_data_t *data = (srt_data_t *)pldap;
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/* we are only interested in reply packets */
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if(ldap->is_request){
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return TAP_PACKET_DONT_REDRAW;
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}
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/* if we havnt seen the request, just ignore it */
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if(!ldap->req_frame){
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return TAP_PACKET_DONT_REDRAW;
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}
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/* only use the commands we know how to handle */
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switch(ldap->protocolOpTag){
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case LDAP_REQ_BIND:
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case LDAP_REQ_SEARCH:
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case LDAP_REQ_MODIFY:
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case LDAP_REQ_ADD:
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case LDAP_REQ_DELETE:
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case LDAP_REQ_MODRDN:
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case LDAP_REQ_COMPARE:
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case LDAP_REQ_EXTENDED:
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break;
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default:
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return TAP_PACKET_DONT_REDRAW;
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}
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ldap_srt_table = g_array_index(data->srt_array, srt_stat_table*, i);
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add_srt_table_data(ldap_srt_table, ldap->protocolOpTag, &ldap->req_time, pinfo);
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return TAP_PACKET_REDRAW;
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}
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/*
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* Data structure attached to a conversation, giving authentication
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* information from a bind request.
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*/
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typedef struct ldap_conv_info_t {
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guint auth_type; /* authentication type */
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char *auth_mech; /* authentication mechanism */
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guint32 first_auth_frame; /* first frame that would use a security layer */
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wmem_map_t *unmatched;
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wmem_map_t *matched;
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gboolean is_mscldap;
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guint32 num_results;
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gboolean start_tls_pending;
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guint32 start_tls_frame;
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} ldap_conv_info_t;
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static guint
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ldap_info_hash_matched(gconstpointer k)
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{
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const ldap_call_response_t *key = (const ldap_call_response_t *)k;
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return key->messageId;
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}
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static gint
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ldap_info_equal_matched(gconstpointer k1, gconstpointer k2)
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{
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const ldap_call_response_t *key1 = (const ldap_call_response_t*)k1;
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const ldap_call_response_t *key2 = (const ldap_call_response_t*)k2;
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if( key1->req_frame && key2->req_frame && (key1->req_frame!=key2->req_frame) ){
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return 0;
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}
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/* a response may span multiple frames
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if( key1->rep_frame && key2->rep_frame && (key1->rep_frame!=key2->rep_frame) ){
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return 0;
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}
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*/
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return key1->messageId==key2->messageId;
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}
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static guint
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ldap_info_hash_unmatched(gconstpointer k)
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{
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const ldap_call_response_t *key = (const ldap_call_response_t*)k;
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return key->messageId;
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}
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static gint
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ldap_info_equal_unmatched(gconstpointer k1, gconstpointer k2)
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{
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const ldap_call_response_t *key1 = (const ldap_call_response_t*)k1;
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const ldap_call_response_t *key2 = (const ldap_call_response_t*)k2;
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return key1->messageId==key2->messageId;
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}
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/* These are the NtVer flags from MS-ADTS section 6.3.1.1
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* https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts
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*/
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static const true_false_string tfs_ntver_v1 = {
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"Client requested version 1 netlogon response",
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"Version 1 netlogon response not requested"
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};
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static const true_false_string tfs_ntver_v5 = {
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"Client requested version 5 netlogon response",
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"Version 5 netlogon response not requested"
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};
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static const true_false_string tfs_ntver_v5ex = {
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"Client requested version 5 extended netlogon response",
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"Version 5 extended response not requested"
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};
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static const true_false_string tfs_ntver_v5ep = {
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"Client has requested IP address of the server",
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"IP address of server not requested"
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};
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static const true_false_string tfs_ntver_vcs = {
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"Client has asked for the closest site information",
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"Closest site information not requested"
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};
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static const true_false_string tfs_ntver_vnt4 = {
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"Client is requesting server to avoid NT4 emulation",
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"Only full AD DS requested"
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};
|
|
static const true_false_string tfs_ntver_vpdc = {
|
|
"Client has requested the Primary Domain Controller",
|
|
"Primary Domain Controller not requested"
|
|
};
|
|
static const true_false_string tfs_ntver_vip = {
|
|
"Client has requested IP details (obsolete)",
|
|
"IP details not requested (obsolete)"
|
|
};
|
|
static const true_false_string tfs_ntver_vl = {
|
|
"Client indicated that it is the local machine",
|
|
"Client is not the local machine"
|
|
};static const true_false_string tfs_ntver_vgc = {
|
|
"Client has requested a Global Catalog server",
|
|
"Global Catalog not requested"
|
|
};
|
|
|
|
/* Stuff for generation/handling of fields for custom AttributeValues */
|
|
typedef struct _attribute_type_t {
|
|
gchar* attribute_type;
|
|
gchar* attribute_desc;
|
|
} attribute_type_t;
|
|
|
|
static attribute_type_t* attribute_types;
|
|
static guint num_attribute_types;
|
|
|
|
static GHashTable* attribute_types_hash;
|
|
static hf_register_info* dynamic_hf;
|
|
static guint dynamic_hf_size;
|
|
|
|
static gboolean
|
|
attribute_types_update_cb(void *r, char **err)
|
|
{
|
|
attribute_type_t *rec = (attribute_type_t *)r;
|
|
char c;
|
|
|
|
if (rec->attribute_type == NULL) {
|
|
*err = g_strdup("Attribute type can't be empty");
|
|
return FALSE;
|
|
}
|
|
|
|
g_strstrip(rec->attribute_type);
|
|
if (rec->attribute_type[0] == 0) {
|
|
*err = g_strdup("Attribute type can't be empty");
|
|
return FALSE;
|
|
}
|
|
|
|
/* Check for invalid characters (to avoid asserting out when
|
|
* registering the field).
|
|
*/
|
|
c = proto_check_field_name(rec->attribute_type);
|
|
if (c) {
|
|
*err = ws_strdup_printf("Attribute type can't contain '%c'", c);
|
|
return FALSE;
|
|
}
|
|
|
|
*err = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
static void *
|
|
attribute_types_copy_cb(void* n, const void* o, size_t siz _U_)
|
|
{
|
|
attribute_type_t* new_rec = (attribute_type_t*)n;
|
|
const attribute_type_t* old_rec = (const attribute_type_t*)o;
|
|
|
|
new_rec->attribute_type = g_strdup(old_rec->attribute_type);
|
|
new_rec->attribute_desc = g_strdup(old_rec->attribute_desc);
|
|
|
|
return new_rec;
|
|
}
|
|
|
|
static void
|
|
attribute_types_free_cb(void*r)
|
|
{
|
|
attribute_type_t* rec = (attribute_type_t*)r;
|
|
|
|
g_free(rec->attribute_type);
|
|
g_free(rec->attribute_desc);
|
|
}
|
|
|
|
UAT_CSTRING_CB_DEF(attribute_types, attribute_type, attribute_type_t)
|
|
UAT_CSTRING_CB_DEF(attribute_types, attribute_desc, attribute_type_t)
|
|
|
|
/*
|
|
*
|
|
*/
|
|
static gint*
|
|
get_hf_for_header(char* attribute_type)
|
|
{
|
|
gint* hf_id = NULL;
|
|
|
|
if (attribute_types_hash) {
|
|
hf_id = (gint*) g_hash_table_lookup(attribute_types_hash, attribute_type);
|
|
} else {
|
|
hf_id = NULL;
|
|
}
|
|
|
|
return hf_id;
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
static void
|
|
deregister_attribute_types(void)
|
|
{
|
|
if (dynamic_hf) {
|
|
/* Deregister all fields */
|
|
for (guint i = 0; i < dynamic_hf_size; i++) {
|
|
proto_deregister_field (proto_ldap, *(dynamic_hf[i].p_id));
|
|
g_free (dynamic_hf[i].p_id);
|
|
}
|
|
|
|
proto_add_deregistered_data (dynamic_hf);
|
|
dynamic_hf = NULL;
|
|
dynamic_hf_size = 0;
|
|
}
|
|
|
|
if (attribute_types_hash) {
|
|
g_hash_table_destroy (attribute_types_hash);
|
|
attribute_types_hash = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
attribute_types_post_update_cb(void)
|
|
{
|
|
gint* hf_id;
|
|
gchar* attribute_type;
|
|
|
|
deregister_attribute_types();
|
|
|
|
if (num_attribute_types) {
|
|
attribute_types_hash = g_hash_table_new(g_str_hash, g_str_equal);
|
|
dynamic_hf = g_new0(hf_register_info,num_attribute_types);
|
|
dynamic_hf_size = num_attribute_types;
|
|
|
|
for (guint i = 0; i < dynamic_hf_size; i++) {
|
|
hf_id = g_new(gint,1);
|
|
*hf_id = -1;
|
|
attribute_type = g_strdup(attribute_types[i].attribute_type);
|
|
|
|
dynamic_hf[i].p_id = hf_id;
|
|
dynamic_hf[i].hfinfo.name = attribute_type;
|
|
dynamic_hf[i].hfinfo.abbrev = ws_strdup_printf("ldap.AttributeValue.%s", attribute_type);
|
|
dynamic_hf[i].hfinfo.type = FT_STRING;
|
|
dynamic_hf[i].hfinfo.display = BASE_NONE;
|
|
dynamic_hf[i].hfinfo.strings = NULL;
|
|
dynamic_hf[i].hfinfo.bitmask = 0;
|
|
dynamic_hf[i].hfinfo.blurb = g_strdup(attribute_types[i].attribute_desc);
|
|
HFILL_INIT(dynamic_hf[i]);
|
|
|
|
g_hash_table_insert(attribute_types_hash, attribute_type, hf_id);
|
|
}
|
|
|
|
proto_register_field_array(proto_ldap, dynamic_hf, dynamic_hf_size);
|
|
}
|
|
}
|
|
|
|
static void
|
|
attribute_types_reset_cb(void)
|
|
{
|
|
deregister_attribute_types();
|
|
}
|
|
|
|
/* MS-ADTS specification, section 6.3.1.1, NETLOGON_NT_VERSION Options Bits */
|
|
static int dissect_mscldap_ntver_flags(proto_tree *parent_tree, tvbuff_t *tvb, int offset)
|
|
{
|
|
static int * const flags[] = {
|
|
&hf_mscldap_ntver_flags_v1,
|
|
&hf_mscldap_ntver_flags_v5,
|
|
&hf_mscldap_ntver_flags_v5ex,
|
|
&hf_mscldap_ntver_flags_v5ep,
|
|
&hf_mscldap_ntver_flags_vcs,
|
|
&hf_mscldap_ntver_flags_vnt4,
|
|
&hf_mscldap_ntver_flags_vpdc,
|
|
&hf_mscldap_ntver_flags_vip,
|
|
&hf_mscldap_ntver_flags_vl,
|
|
&hf_mscldap_ntver_flags_vgc,
|
|
NULL
|
|
};
|
|
|
|
proto_tree_add_bitmask_with_flags(parent_tree, tvb, offset, hf_mscldap_ntver_flags,
|
|
ett_mscldap_ntver_flags, flags, ENC_LITTLE_ENDIAN, BMT_NO_FALSE);
|
|
offset += 4;
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* This string contains the last LDAPString that was decoded */
|
|
static const char *attributedesc_string=NULL;
|
|
|
|
/* This string contains the last AssertionValue that was decoded */
|
|
static char *ldapvalue_string=NULL;
|
|
|
|
/* if the octet string contain all printable ASCII characters, then
|
|
* display it as a string, othervise just display it in hex.
|
|
*/
|
|
static int
|
|
dissect_ldap_AssertionValue(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index)
|
|
{
|
|
gint8 ber_class;
|
|
gboolean pc, ind, is_ascii;
|
|
gint32 tag;
|
|
guint32 len;
|
|
|
|
if(!implicit_tag){
|
|
offset=get_ber_identifier(tvb, offset, &ber_class, &pc, &tag);
|
|
offset=get_ber_length(tvb, offset, &len, &ind);
|
|
} else {
|
|
len=tvb_reported_length_remaining(tvb,offset);
|
|
}
|
|
|
|
if(len==0){
|
|
return offset;
|
|
}
|
|
|
|
|
|
/*
|
|
* Some special/wellknown attributes in common LDAP (read AD)
|
|
* are neither ascii strings nor blobs of hex data.
|
|
* Special case these attributes and decode them more nicely.
|
|
*
|
|
* Add more special cases as required to prettify further
|
|
* (there can't be that many ones that are truly interesting)
|
|
*/
|
|
if(attributedesc_string && !strncmp("DomainSid", attributedesc_string, 9)){
|
|
tvbuff_t *sid_tvb;
|
|
char *tmpstr;
|
|
|
|
/* this octet string contains an NT SID */
|
|
sid_tvb=tvb_new_subset_length(tvb, offset, len);
|
|
dissect_nt_sid(sid_tvb, 0, tree, "SID", &tmpstr, hf_index);
|
|
ldapvalue_string=tmpstr;
|
|
|
|
goto finished;
|
|
} else if ( (len==16) /* GUIDs are always 16 bytes */
|
|
&& (attributedesc_string && !strncmp("DomainGuid", attributedesc_string, 10))) {
|
|
guint8 drep[4] = { 0x10, 0x00, 0x00, 0x00}; /* fake DREP struct */
|
|
e_guid_t uuid;
|
|
|
|
/* This octet string contained a GUID */
|
|
dissect_dcerpc_uuid_t(tvb, offset, actx->pinfo, tree, drep, hf_ldap_guid, &uuid);
|
|
|
|
ldapvalue_string=(char*)wmem_alloc(actx->pinfo->pool, 1024);
|
|
snprintf(ldapvalue_string, 1023, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
|
|
uuid.data1, uuid.data2, uuid.data3, uuid.data4[0], uuid.data4[1],
|
|
uuid.data4[2], uuid.data4[3], uuid.data4[4], uuid.data4[5],
|
|
uuid.data4[6], uuid.data4[7]);
|
|
|
|
goto finished;
|
|
} else if (attributedesc_string && !strncmp("NtVer", attributedesc_string, 5)){
|
|
guint32 flags;
|
|
|
|
len = 0;
|
|
/* get flag value to populate ldapvalue_string */
|
|
flags=tvb_get_letohl(tvb, offset);
|
|
|
|
ldapvalue_string=(char*)wmem_alloc(actx->pinfo->pool, 1024);
|
|
snprintf(ldapvalue_string, 1023, "0x%08x",flags);
|
|
|
|
/* populate bitmask subtree */
|
|
offset = dissect_mscldap_ntver_flags(tree, tvb, offset);
|
|
|
|
goto finished;
|
|
|
|
|
|
}
|
|
|
|
/*
|
|
* It was not one of our "wellknown" attributes so make the best
|
|
* we can and just try to see if it is an ascii string or if it
|
|
* is a binary blob.
|
|
*
|
|
* XXX - should we support reading RFC 2252-style schemas
|
|
* for LDAP, and using that to determine how to display
|
|
* attribute values and assertion values?
|
|
*
|
|
* -- I don't think there are full schemas available that describe the
|
|
* interesting cases i.e. AD -- ronnie
|
|
*/
|
|
is_ascii=tvb_ascii_isprint(tvb, offset, len);
|
|
|
|
/* convert the string into a printable string */
|
|
if(is_ascii){
|
|
ldapvalue_string= tvb_get_string_enc(actx->pinfo->pool, tvb, offset, len, ENC_UTF_8|ENC_NA);
|
|
} else {
|
|
ldapvalue_string= tvb_bytes_to_str_punct(actx->pinfo->pool, tvb, offset, len, ':');
|
|
}
|
|
|
|
proto_tree_add_string(tree, hf_index, tvb, offset, len, ldapvalue_string);
|
|
|
|
|
|
finished:
|
|
offset+=len;
|
|
return offset;
|
|
}
|
|
|
|
/* This string contains the last Filter item that was decoded */
|
|
static const char *Filter_string=NULL;
|
|
static const char *and_filter_string=NULL;
|
|
static const char *or_filter_string=NULL;
|
|
static const char *substring_value=NULL;
|
|
static const char *substring_item_init=NULL;
|
|
static const char *substring_item_any=NULL;
|
|
static const char *substring_item_final=NULL;
|
|
static const char *matching_rule_string=NULL;
|
|
static gboolean matching_rule_dnattr=FALSE;
|
|
|
|
#define MAX_FILTER_LEN 4096
|
|
static gint Filter_length;
|
|
|
|
#define MAX_FILTER_ELEMENTS 200
|
|
static gint Filter_elements;
|
|
|
|
/* Global variables */
|
|
static gint MessageID =-1;
|
|
static gint ProtocolOp = -1;
|
|
static gint result = 0;
|
|
static proto_item *ldm_tree = NULL; /* item to add text to */
|
|
|
|
static void ldap_do_protocolop(packet_info *pinfo)
|
|
{
|
|
const gchar* valstr;
|
|
|
|
if (do_protocolop) {
|
|
|
|
valstr = val_to_str(ProtocolOp, ldap_ProtocolOp_choice_vals, "Unknown (%%u)");
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s(%u) ", valstr, MessageID);
|
|
|
|
if(ldm_tree)
|
|
proto_item_append_text(ldm_tree, " %s(%d)", valstr, MessageID);
|
|
|
|
do_protocolop = FALSE;
|
|
|
|
}
|
|
}
|
|
|
|
static ldap_call_response_t *
|
|
ldap_match_call_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint messageId, guint protocolOpTag, ldap_conv_info_t *ldap_info)
|
|
{
|
|
ldap_call_response_t lcr, *lcrp=NULL;
|
|
|
|
/* first see if we have already matched this */
|
|
|
|
lcr.messageId=messageId;
|
|
switch(protocolOpTag){
|
|
case LDAP_REQ_BIND:
|
|
case LDAP_REQ_SEARCH:
|
|
case LDAP_REQ_MODIFY:
|
|
case LDAP_REQ_ADD:
|
|
case LDAP_REQ_DELETE:
|
|
case LDAP_REQ_MODRDN:
|
|
case LDAP_REQ_COMPARE:
|
|
case LDAP_REQ_EXTENDED:
|
|
lcr.is_request=TRUE;
|
|
lcr.req_frame=pinfo->num;
|
|
lcr.rep_frame=0;
|
|
break;
|
|
case LDAP_RES_BIND:
|
|
case LDAP_RES_SEARCH_ENTRY:
|
|
case LDAP_RES_SEARCH_REF:
|
|
case LDAP_RES_SEARCH_RESULT:
|
|
case LDAP_RES_MODIFY:
|
|
case LDAP_RES_ADD:
|
|
case LDAP_RES_DELETE:
|
|
case LDAP_RES_MODRDN:
|
|
case LDAP_RES_COMPARE:
|
|
case LDAP_RES_EXTENDED:
|
|
case LDAP_RES_INTERMEDIATE:
|
|
lcr.is_request=FALSE;
|
|
lcr.req_frame=0;
|
|
lcr.rep_frame=pinfo->num;
|
|
break;
|
|
default:
|
|
return NULL;
|
|
}
|
|
lcrp=(ldap_call_response_t *)wmem_map_lookup(ldap_info->matched, &lcr);
|
|
|
|
if(lcrp){
|
|
|
|
lcrp->is_request=lcr.is_request;
|
|
|
|
} else {
|
|
|
|
/* we haven't found a match - try and match it up */
|
|
|
|
switch(protocolOpTag){
|
|
case LDAP_REQ_BIND:
|
|
case LDAP_REQ_SEARCH:
|
|
case LDAP_REQ_MODIFY:
|
|
case LDAP_REQ_ADD:
|
|
case LDAP_REQ_DELETE:
|
|
case LDAP_REQ_MODRDN:
|
|
case LDAP_REQ_COMPARE:
|
|
case LDAP_REQ_EXTENDED:
|
|
|
|
/* this a a request - add it to the unmatched list */
|
|
|
|
/* check that we don't already have one of those in the
|
|
unmatched list and if so remove it */
|
|
|
|
lcr.messageId=messageId;
|
|
lcrp=(ldap_call_response_t *)wmem_map_lookup(ldap_info->unmatched, &lcr);
|
|
if(lcrp){
|
|
wmem_map_remove(ldap_info->unmatched, lcrp);
|
|
}
|
|
/* if we can't reuse the old one, grab a new chunk */
|
|
if(!lcrp){
|
|
lcrp=wmem_new0(wmem_file_scope(), ldap_call_response_t);
|
|
}
|
|
lcrp->messageId=messageId;
|
|
lcrp->req_frame=pinfo->num;
|
|
lcrp->req_time=pinfo->abs_ts;
|
|
lcrp->rep_frame=0;
|
|
lcrp->protocolOpTag=protocolOpTag;
|
|
lcrp->is_request=TRUE;
|
|
wmem_map_insert(ldap_info->unmatched, lcrp, lcrp);
|
|
return NULL;
|
|
break;
|
|
case LDAP_RES_BIND:
|
|
case LDAP_RES_SEARCH_ENTRY:
|
|
case LDAP_RES_SEARCH_REF:
|
|
case LDAP_RES_SEARCH_RESULT:
|
|
case LDAP_RES_MODIFY:
|
|
case LDAP_RES_ADD:
|
|
case LDAP_RES_DELETE:
|
|
case LDAP_RES_MODRDN:
|
|
case LDAP_RES_COMPARE:
|
|
case LDAP_RES_EXTENDED:
|
|
case LDAP_RES_INTERMEDIATE:
|
|
|
|
/* this is a result - it should be in our unmatched list */
|
|
|
|
lcr.messageId=messageId;
|
|
lcrp=(ldap_call_response_t *)wmem_map_lookup(ldap_info->unmatched, &lcr);
|
|
|
|
if(lcrp){
|
|
|
|
if(!lcrp->rep_frame){
|
|
wmem_map_remove(ldap_info->unmatched, lcrp);
|
|
lcrp->rep_frame=pinfo->num;
|
|
lcrp->is_request=FALSE;
|
|
wmem_map_insert(ldap_info->matched, lcrp, lcrp);
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
}
|
|
/* we have found a match */
|
|
|
|
if(lcrp){
|
|
proto_item *it;
|
|
|
|
if(lcrp->is_request){
|
|
it=proto_tree_add_uint(tree, hf_ldap_response_in, tvb, 0, 0, lcrp->rep_frame);
|
|
proto_item_set_generated(it);
|
|
} else {
|
|
nstime_t ns;
|
|
it=proto_tree_add_uint(tree, hf_ldap_response_to, tvb, 0, 0, lcrp->req_frame);
|
|
proto_item_set_generated(it);
|
|
nstime_delta(&ns, &pinfo->abs_ts, &lcrp->req_time);
|
|
it=proto_tree_add_time(tree, hf_ldap_time, tvb, 0, 0, &ns);
|
|
proto_item_set_generated(it);
|
|
}
|
|
}
|
|
|
|
return lcrp;
|
|
}
|
|
|
|
#include "packet-ldap-fn.c"
|
|
static int dissect_LDAPMessage_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, ldap_conv_info_t *ldap_info) {
|
|
|
|
int offset = 0;
|
|
asn1_ctx_t asn1_ctx;
|
|
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
|
|
|
|
asn1_ctx.private_data = ldap_info;
|
|
offset = dissect_ldap_LDAPMessage(FALSE, tvb, offset, &asn1_ctx, tree, hf_ldap_LDAPMessage_PDU);
|
|
return offset;
|
|
}
|
|
|
|
static void
|
|
dissect_ldap_payload(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, ldap_conv_info_t *ldap_info,
|
|
gboolean is_mscldap)
|
|
{
|
|
int offset = 0;
|
|
guint length_remaining;
|
|
guint msg_len = 0;
|
|
int messageOffset = 0;
|
|
guint headerLength = 0;
|
|
guint length = 0;
|
|
tvbuff_t *msg_tvb = NULL;
|
|
gint8 ber_class;
|
|
gboolean pc, ind = 0;
|
|
gint32 ber_tag;
|
|
|
|
attributedesc_string=NULL;
|
|
|
|
|
|
one_more_pdu:
|
|
|
|
length_remaining = tvb_ensure_captured_length_remaining(tvb, offset);
|
|
|
|
if (length_remaining < 6) return;
|
|
|
|
/*
|
|
* OK, try to read the "Sequence Of" header; this gets the total
|
|
* length of the LDAP message.
|
|
*/
|
|
messageOffset = get_ber_identifier(tvb, offset, &ber_class, &pc, &ber_tag);
|
|
messageOffset = get_ber_length(tvb, messageOffset, &msg_len, &ind);
|
|
|
|
/* sanity check */
|
|
if((msg_len<4) || (msg_len>10000000)) return;
|
|
|
|
if ( (ber_class==BER_CLASS_UNI) && (ber_tag==BER_UNI_TAG_SEQUENCE) ) {
|
|
/*
|
|
* Add the length of the "Sequence Of" header to the message
|
|
* length.
|
|
*/
|
|
headerLength = messageOffset - offset;
|
|
msg_len += headerLength;
|
|
if (msg_len < headerLength) {
|
|
/*
|
|
* The message length was probably so large that the total length
|
|
* overflowed.
|
|
*
|
|
* Report this as an error.
|
|
*/
|
|
show_reported_bounds_error(tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
} else {
|
|
/*
|
|
* We couldn't parse the header; just make it the amount of data
|
|
* remaining in the tvbuff, so we'll give up on this segment
|
|
* after attempting to parse the message - there's nothing more
|
|
* we can do. "dissect_ldap_message()" will display the error.
|
|
*/
|
|
msg_len = length_remaining;
|
|
}
|
|
|
|
/*
|
|
* Construct a tvbuff containing the amount of the payload we have
|
|
* available. Make its reported length the amount of data in the
|
|
* LDAP message.
|
|
*
|
|
* XXX - if reassembly isn't enabled. the subdissector will throw a
|
|
* BoundsError exception, rather than a ReportedBoundsError exception.
|
|
* We really want a tvbuff where the length is "length", the reported
|
|
* length is "plen", and the "if the snapshot length were infinite"
|
|
* length is the minimum of the reported length of the tvbuff handed
|
|
* to us and "plen", with a new type of exception thrown if the offset
|
|
* is within the reported length but beyond that third length, with
|
|
* that exception getting the "Unreassembled Packet" error.
|
|
*/
|
|
length = length_remaining;
|
|
if (length > msg_len) length = msg_len;
|
|
msg_tvb = tvb_new_subset_length_caplen(tvb, offset, length, msg_len);
|
|
|
|
/*
|
|
* Now dissect the LDAP message.
|
|
*/
|
|
ldap_info->is_mscldap = is_mscldap;
|
|
dissect_LDAPMessage_PDU(msg_tvb, pinfo, tree, ldap_info);
|
|
|
|
offset += msg_len;
|
|
|
|
/* If this was a sasl blob there might be another PDU following in the
|
|
* same blob
|
|
*/
|
|
if(tvb_reported_length_remaining(tvb, offset)>=6){
|
|
tvb = tvb_new_subset_remaining(tvb, offset);
|
|
offset = 0;
|
|
|
|
goto one_more_pdu;
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
ldap_frame_end(void)
|
|
{
|
|
ldap_found_in_frame = FALSE;
|
|
attr_type = NULL;
|
|
ldapvalue_string = NULL;
|
|
/* ? */
|
|
attributedesc_string = NULL;
|
|
Filter_string = NULL;
|
|
and_filter_string = NULL;
|
|
object_identifier_id = NULL;
|
|
or_filter_string = NULL;
|
|
|
|
substring_item_any = NULL;
|
|
substring_item_final = NULL;
|
|
substring_item_init = NULL;
|
|
substring_value = NULL;
|
|
|
|
ldm_tree = NULL;
|
|
|
|
Filter_elements = 0;
|
|
Filter_length = 0;
|
|
do_protocolop = FALSE;
|
|
result = 0;
|
|
|
|
/* seems to be ok, but reset just in case */
|
|
matching_rule_string = NULL;
|
|
}
|
|
|
|
static void
|
|
dissect_ldap_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gboolean is_mscldap)
|
|
{
|
|
int offset = 0;
|
|
conversation_t *conversation;
|
|
gboolean doing_sasl_security = FALSE;
|
|
guint length_remaining;
|
|
ldap_conv_info_t *ldap_info = NULL;
|
|
proto_item *ldap_item = NULL;
|
|
proto_tree *ldap_tree = NULL;
|
|
|
|
ldm_tree = NULL;
|
|
|
|
conversation = find_or_create_conversation(pinfo);
|
|
|
|
/*
|
|
* Do we already have a type and mechanism?
|
|
*/
|
|
ldap_info = (ldap_conv_info_t *)conversation_get_proto_data(conversation, proto_ldap);
|
|
if (ldap_info == NULL) {
|
|
/* No. Attach that information to the conversation, and add
|
|
* it to the list of information structures.
|
|
*/
|
|
ldap_info = wmem_new0(wmem_file_scope(), ldap_conv_info_t);
|
|
ldap_info->matched=wmem_map_new(wmem_file_scope(), ldap_info_hash_matched, ldap_info_equal_matched);
|
|
ldap_info->unmatched=wmem_map_new(wmem_file_scope(), ldap_info_hash_unmatched, ldap_info_equal_unmatched);
|
|
|
|
conversation_add_proto_data(conversation, proto_ldap, ldap_info);
|
|
}
|
|
|
|
switch (ldap_info->auth_type) {
|
|
case LDAP_AUTH_SASL:
|
|
/*
|
|
* It's SASL; are we using a security layer?
|
|
*/
|
|
if (ldap_info->first_auth_frame != 0 &&
|
|
pinfo->num >= ldap_info->first_auth_frame) {
|
|
doing_sasl_security = TRUE; /* yes */
|
|
}
|
|
}
|
|
|
|
length_remaining = tvb_ensure_captured_length_remaining(tvb, offset);
|
|
|
|
/* It might still be a packet containing a SASL security layer
|
|
* but it's just that we never saw the BIND packet.
|
|
* check if it looks like it could be a SASL blob here
|
|
* and in that case just assume it is GSS-SPNEGO
|
|
*/
|
|
if(!doing_sasl_security && (tvb_bytes_exist(tvb, offset, 5))
|
|
&&(tvb_get_ntohl(tvb, offset)<=(guint)(tvb_reported_length_remaining(tvb, offset)-4))
|
|
&&(tvb_get_guint8(tvb, offset+4)==0x60) ){
|
|
ldap_info->auth_type=LDAP_AUTH_SASL;
|
|
ldap_info->first_auth_frame=pinfo->num;
|
|
ldap_info->auth_mech=wmem_strdup(wmem_file_scope(), "GSS-SPNEGO");
|
|
doing_sasl_security=TRUE;
|
|
}
|
|
|
|
/*
|
|
* This is the first PDU, set the Protocol column and clear the
|
|
* Info column.
|
|
*/
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, pinfo->current_proto);
|
|
|
|
if(ldap_found_in_frame) {
|
|
/* we have already dissected an ldap PDU in this frame - add a separator and set a fence */
|
|
col_append_str(pinfo->cinfo, COL_INFO, " | ");
|
|
col_set_fence(pinfo->cinfo, COL_INFO);
|
|
} else {
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
register_frame_end_routine (pinfo, ldap_frame_end);
|
|
ldap_found_in_frame = TRUE;
|
|
}
|
|
|
|
ldap_item = proto_tree_add_item(tree, is_mscldap?proto_cldap:proto_ldap, tvb, 0, -1, ENC_NA);
|
|
ldap_tree = proto_item_add_subtree(ldap_item, ett_ldap);
|
|
|
|
/*
|
|
* Might we be doing a SASL security layer and, if so, *are* we doing
|
|
* one?
|
|
*
|
|
* Just because we've seen a bind reply for SASL, that doesn't mean
|
|
* that we're using a SASL security layer; I've seen captures in
|
|
* which some SASL negotiations lead to a security layer being used
|
|
* and other negotiations don't, and it's not obvious what's different
|
|
* in the two negotiations. Therefore, we assume that if the first
|
|
* byte is 0, it's a length for a SASL security layer (that way, we
|
|
* never reassemble more than 16 megabytes, protecting us from
|
|
* chewing up *too* much memory), and otherwise that it's an LDAP
|
|
* message (actually, if it's an LDAP message it should begin with 0x30,
|
|
* but we want to parse garbage as LDAP messages rather than really
|
|
* huge lengths).
|
|
*/
|
|
|
|
if (doing_sasl_security && tvb_get_guint8(tvb, offset) == 0) {
|
|
proto_tree *sasl_tree;
|
|
tvbuff_t *sasl_tvb;
|
|
guint sasl_len, sasl_msg_len, length;
|
|
/*
|
|
* Yes. The frame begins with a 4-byte big-endian length.
|
|
* And we know we have at least 6 bytes
|
|
*/
|
|
|
|
/*
|
|
* Get the SASL length, which is the length of data in the buffer
|
|
* following the length (i.e., it's 4 less than the total length).
|
|
*
|
|
* XXX - do we need to reassemble buffers? For now, we
|
|
* assume that each LDAP message is entirely contained within
|
|
* a buffer.
|
|
*/
|
|
sasl_len = tvb_get_ntohl(tvb, offset);
|
|
sasl_msg_len = sasl_len + 4;
|
|
if (sasl_msg_len < 4) {
|
|
/*
|
|
* The message length was probably so large that the total length
|
|
* overflowed.
|
|
*
|
|
* Report this as an error.
|
|
*/
|
|
show_reported_bounds_error(tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Construct a tvbuff containing the amount of the payload we have
|
|
* available. Make its reported length the amount of data in the PDU.
|
|
*
|
|
* XXX - if reassembly isn't enabled. the subdissector will throw a
|
|
* BoundsError exception, rather than a ReportedBoundsError exception.
|
|
* We really want a tvbuff where the length is "length", the reported
|
|
* length is "plen", and the "if the snapshot length were infinite"
|
|
* length is the minimum of the reported length of the tvbuff handed
|
|
* to us and "plen", with a new type of exception thrown if the offset
|
|
* is within the reported length but beyond that third length, with
|
|
* that exception getting the "Unreassembled Packet" error.
|
|
*/
|
|
length = length_remaining;
|
|
if (length > sasl_msg_len) length = sasl_msg_len;
|
|
sasl_tvb = tvb_new_subset_length_caplen(tvb, offset, length, sasl_msg_len);
|
|
|
|
proto_tree_add_uint(ldap_tree, hf_ldap_sasl_buffer_length, sasl_tvb, 0, 4, sasl_len);
|
|
|
|
sasl_tree = proto_tree_add_subtree(ldap_tree, sasl_tvb, 4, sasl_msg_len - 4, ett_ldap_sasl_blob, NULL, "SASL Buffer");
|
|
|
|
if (ldap_info->auth_mech != NULL &&
|
|
((strcmp(ldap_info->auth_mech, "GSS-SPNEGO") == 0) ||
|
|
/* auth_mech may have been set from the bind */
|
|
(strcmp(ldap_info->auth_mech, "GSSAPI") == 0))) {
|
|
tvbuff_t *gssapi_tvb = NULL;
|
|
int ver_len;
|
|
int tmp_length;
|
|
gssapi_encrypt_info_t gssapi_encrypt;
|
|
|
|
/*
|
|
* This is GSS-API (using SPNEGO, but we should be done with
|
|
* the negotiation by now).
|
|
*
|
|
* Dissect the GSS_Wrap() token; it'll return the length of
|
|
* the token, from which we compute the offset in the tvbuff at
|
|
* which the plaintext data, i.e. the LDAP message, begins.
|
|
*/
|
|
tmp_length = tvb_reported_length_remaining(sasl_tvb, 4);
|
|
if ((guint)tmp_length > sasl_len)
|
|
tmp_length = sasl_len;
|
|
gssapi_tvb = tvb_new_subset_length_caplen(sasl_tvb, 4, tmp_length, sasl_len);
|
|
|
|
/* Attempt decryption of the GSSAPI wrapped data if possible */
|
|
memset(&gssapi_encrypt, 0, sizeof(gssapi_encrypt));
|
|
gssapi_encrypt.decrypt_gssapi_tvb=DECRYPT_GSSAPI_NORMAL;
|
|
ver_len = call_dissector_with_data(gssapi_wrap_handle, gssapi_tvb, pinfo, sasl_tree, &gssapi_encrypt);
|
|
/*
|
|
* If ver_len is 0, it probably means that we got a PDU that is not
|
|
* aligned to the start of the segment.
|
|
*/
|
|
if(ver_len==0){
|
|
return;
|
|
}
|
|
if (gssapi_encrypt.gssapi_decrypted_tvb) {
|
|
tvbuff_t *decr_tvb = gssapi_encrypt.gssapi_decrypted_tvb;
|
|
proto_tree *enc_tree = NULL;
|
|
|
|
/*
|
|
* The LDAP payload (blob) was encrypted and we were able to decrypt it.
|
|
* The data was signed via a MIC token, sealed (encrypted), and "wrapped"
|
|
* within the mechanism's "blob." Call dissect_ldap_payload to dissect
|
|
* one or more LDAPMessages such as searchRequest messages within this
|
|
* payload.
|
|
*/
|
|
col_set_str(pinfo->cinfo, COL_INFO, "SASL GSS-API Privacy (decrypted): ");
|
|
|
|
if (sasl_tree) {
|
|
guint decr_len = tvb_reported_length(decr_tvb);
|
|
|
|
enc_tree = proto_tree_add_subtree_format(sasl_tree, decr_tvb, 0, -1,
|
|
ett_ldap_payload, NULL, "GSS-API Encrypted payload (%d byte%s)",
|
|
decr_len, plurality(decr_len, "", "s"));
|
|
}
|
|
|
|
dissect_ldap_payload(decr_tvb, pinfo, enc_tree, ldap_info, is_mscldap);
|
|
}
|
|
else if (gssapi_encrypt.gssapi_data_encrypted) {
|
|
/*
|
|
* The LDAP message was encrypted but couldn't be decrypted so just display the
|
|
* encrypted data all of which is found in Packet Bytes.
|
|
*/
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "SASL GSS-API Privacy: payload (%d byte%s)",
|
|
sasl_len-ver_len, plurality(sasl_len-ver_len, "", "s"));
|
|
|
|
proto_tree_add_item(sasl_tree, hf_ldap_gssapi_encrypted_payload, gssapi_tvb, ver_len, -1, ENC_NA);
|
|
}
|
|
else {
|
|
tvbuff_t *plain_tvb = tvb_new_subset_remaining(gssapi_tvb, ver_len);
|
|
proto_tree *plain_tree = NULL;
|
|
|
|
/*
|
|
* The payload was not encrypted (sealed) but was signed via a MIC token.
|
|
* If krb5_tok_id == KRB_TOKEN_CFX_WRAP, the payload was wrapped within
|
|
* the mechanism's blob. Call dissect_ldap_payload to dissect one or more
|
|
* LDAPMessages within the payload.
|
|
*/
|
|
col_set_str(pinfo->cinfo, COL_INFO, "SASL GSS-API Integrity: ");
|
|
|
|
if (sasl_tree) {
|
|
guint plain_len = tvb_reported_length(plain_tvb);
|
|
|
|
plain_tree = proto_tree_add_subtree_format(sasl_tree, plain_tvb, 0, -1,
|
|
ett_ldap_payload, NULL, "GSS-API payload (%d byte%s)",
|
|
plain_len, plurality(plain_len, "", "s"));
|
|
}
|
|
|
|
dissect_ldap_payload(plain_tvb, pinfo, plain_tree, ldap_info, is_mscldap);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* The LDAP packet does not contain a SASL security layer. Such messages are typically sent
|
|
* prior to the LDAP "bind" negotiation exchange which establishes the "context" of the session.
|
|
* This means the data could neither be "signed" (no data origin auth or data integrity
|
|
* check) nor "sealed" (encrypted).
|
|
*/
|
|
dissect_ldap_payload(tvb, pinfo, ldap_tree, ldap_info, is_mscldap);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* prepend_dot is no longer used, but is being left in place in order to
|
|
* maintain ABI compatibility.
|
|
*/
|
|
int dissect_mscldap_string(tvbuff_t *tvb, int offset, char *str, int max_len, gboolean prepend_dot _U_)
|
|
{
|
|
int compr_len;
|
|
const gchar *name;
|
|
guint name_len;
|
|
|
|
/* The name data MUST start at offset 0 of the tvb */
|
|
compr_len = get_dns_name(tvb, offset, max_len, 0, &name, &name_len);
|
|
(void) g_strlcpy(str, name, max_len);
|
|
return offset + compr_len;
|
|
}
|
|
|
|
|
|
/* These are the cldap DC flags
|
|
http://msdn.microsoft.com/en-us/library/cc201036.aspx
|
|
*/
|
|
static const true_false_string tfs_ads_pdc = {
|
|
"This is a PDC",
|
|
"This is NOT a pdc"
|
|
};
|
|
static const true_false_string tfs_ads_gc = {
|
|
"This is a GLOBAL CATALOGUE of forest",
|
|
"This is NOT a global catalog of forest"
|
|
};
|
|
static const true_false_string tfs_ads_ldap = {
|
|
"This is an LDAP server",
|
|
"This is NOT an ldap server"
|
|
};
|
|
static const true_false_string tfs_ads_ds = {
|
|
"This dc supports DS",
|
|
"This dc does NOT support ds"
|
|
};
|
|
static const true_false_string tfs_ads_kdc = {
|
|
"This is a KDC (kerberos)",
|
|
"This is NOT a kdc (kerberos)"
|
|
};
|
|
static const true_false_string tfs_ads_timeserv = {
|
|
"This dc is running TIME SERVICES (ntp)",
|
|
"This dc is NOT running time services (ntp)"
|
|
};
|
|
static const true_false_string tfs_ads_closest = {
|
|
"This server is in the same site as the client",
|
|
"This server is NOT in the same site as the client"
|
|
};
|
|
static const true_false_string tfs_ads_writable = {
|
|
"This dc is WRITABLE",
|
|
"This dc is NOT writable"
|
|
};
|
|
static const true_false_string tfs_ads_good_timeserv = {
|
|
"This dc has a GOOD TIME SERVICE (i.e. hardware clock)",
|
|
"This dc does NOT have a good time service (i.e. no hardware clock)"
|
|
};
|
|
static const true_false_string tfs_ads_ndnc = {
|
|
"Domain is NON-DOMAIN NC serviced by ldap server",
|
|
"Domain is NOT non-domain nc serviced by ldap server"
|
|
};
|
|
static const true_false_string tfs_ads_rodc = {
|
|
"Domain controller is a Windows 2008 RODC",
|
|
"Domain controller is not a Windows 2008 RODC"
|
|
};
|
|
static const true_false_string tfs_ads_wdc = {
|
|
"Domain controller is a Windows 2008 writable NC",
|
|
"Domain controller is not a Windows 2008 writable NC"
|
|
};
|
|
static const true_false_string tfs_ads_dns = {
|
|
"Server name is in DNS format (Windows 2008)",
|
|
"Server name is not in DNS format (Windows 2008)"
|
|
};
|
|
static const true_false_string tfs_ads_dnc = {
|
|
"The NC is the default NC (Windows 2008)",
|
|
"The NC is not the default NC (Windows 2008)"
|
|
};
|
|
static const true_false_string tfs_ads_fnc = {
|
|
"The NC is the default forest NC(Windows 2008)",
|
|
"The NC is not the default forest NC (Windows 2008)"
|
|
};
|
|
static int dissect_mscldap_netlogon_flags(proto_tree *parent_tree, tvbuff_t *tvb, int offset)
|
|
{
|
|
static int * const flags[] = {
|
|
&hf_mscldap_netlogon_flags_fnc,
|
|
&hf_mscldap_netlogon_flags_dnc,
|
|
&hf_mscldap_netlogon_flags_dns,
|
|
&hf_mscldap_netlogon_flags_wdc,
|
|
&hf_mscldap_netlogon_flags_rodc,
|
|
&hf_mscldap_netlogon_flags_ndnc,
|
|
&hf_mscldap_netlogon_flags_good_timeserv,
|
|
&hf_mscldap_netlogon_flags_writable,
|
|
&hf_mscldap_netlogon_flags_closest,
|
|
&hf_mscldap_netlogon_flags_timeserv,
|
|
&hf_mscldap_netlogon_flags_kdc,
|
|
&hf_mscldap_netlogon_flags_ds,
|
|
&hf_mscldap_netlogon_flags_ldap,
|
|
&hf_mscldap_netlogon_flags_gc,
|
|
&hf_mscldap_netlogon_flags_pdc,
|
|
NULL
|
|
};
|
|
|
|
proto_tree_add_bitmask_with_flags(parent_tree, tvb, offset, hf_mscldap_netlogon_flags,
|
|
ett_mscldap_netlogon_flags, flags, ENC_LITTLE_ENDIAN, BMT_NO_FALSE);
|
|
offset += 4;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int dissect_NetLogon_PDU(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
|
|
{
|
|
int old_offset, offset=0;
|
|
char str[256];
|
|
guint16 itype;
|
|
guint16 len;
|
|
guint32 version;
|
|
int fn_len;
|
|
proto_item *item;
|
|
|
|
ldm_tree = NULL;
|
|
|
|
|
|
/* Get the length of the buffer */
|
|
len=tvb_reported_length_remaining(tvb,offset);
|
|
|
|
/* check the len if it is to small return */
|
|
if (len < 10)
|
|
return tvb_captured_length(tvb);
|
|
|
|
/* Type */
|
|
proto_tree_add_item(tree, hf_mscldap_netlogon_opcode, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
itype = tvb_get_letohs(tvb, offset);
|
|
offset += 2;
|
|
|
|
switch(itype){
|
|
|
|
case LOGON_SAM_LOGON_RESPONSE:
|
|
/* logon server name; must be aligned on a 2-byte boundary */
|
|
if ((offset & 1) != 0) {
|
|
offset++;
|
|
}
|
|
proto_tree_add_item_ret_length(tree, hf_mscldap_nb_hostname_z, tvb,offset, -1, ENC_UTF_16|ENC_LITTLE_ENDIAN, &fn_len);
|
|
offset +=fn_len;
|
|
|
|
/* username; must be aligned on a 2-byte boundary */
|
|
if ((offset & 1) != 0) {
|
|
offset++;
|
|
}
|
|
proto_tree_add_item_ret_length(tree, hf_mscldap_username_z, tvb,offset, -1, ENC_UTF_16|ENC_LITTLE_ENDIAN, &fn_len);
|
|
offset +=fn_len;
|
|
|
|
/* domain name; must be aligned on a 2-byte boundary */
|
|
if ((offset & 1) != 0) {
|
|
offset++;
|
|
}
|
|
proto_tree_add_item_ret_length(tree, hf_mscldap_nb_domain_z, tvb,offset, -1, ENC_UTF_16|ENC_LITTLE_ENDIAN, &fn_len);
|
|
offset +=fn_len;
|
|
|
|
/* get the version number from the end of the buffer, as the
|
|
length is variable and the version determines what fields
|
|
need to be decoded */
|
|
version = tvb_get_letohl(tvb,len-8);
|
|
|
|
/* include the extra version 5 fields */
|
|
if ((version & NETLOGON_NT_VERSION_5) == NETLOGON_NT_VERSION_5){
|
|
|
|
/* domain guid */
|
|
proto_tree_add_item(tree, hf_mscldap_domain_guid, tvb, offset, 16, ENC_LITTLE_ENDIAN);
|
|
offset += 16;
|
|
|
|
/* domain guid part 2
|
|
there is another 16 byte guid but this is alway zero, so we will skip it */
|
|
offset += 16;
|
|
|
|
/* Forest */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_forest, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* Domain */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_domain, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* Hostname */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_hostname, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* DC IP Address */
|
|
proto_tree_add_item(tree, hf_mscldap_netlogon_ipaddress, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
/* Flags */
|
|
dissect_mscldap_netlogon_flags(tree, tvb, offset);
|
|
}
|
|
|
|
break;
|
|
|
|
case LOGON_SAM_LOGON_RESPONSE_EX:
|
|
/* MS-ADTS 6.3.1.9 */
|
|
offset += 2; /* Skip over "Sbz" field (MUST be set to 0) */
|
|
|
|
/* Flags */
|
|
offset = dissect_mscldap_netlogon_flags(tree, tvb, offset);
|
|
|
|
/* Domain GUID */
|
|
proto_tree_add_item(tree, hf_mscldap_domain_guid, tvb, offset, 16, ENC_LITTLE_ENDIAN);
|
|
offset += 16;
|
|
|
|
/* Forest */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_forest, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* Domain */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_domain, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* Hostname */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_hostname, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* NetBIOS Domain */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_nb_domain, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* NetBIOS Hostname */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_nb_hostname, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* User */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_username, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* Server Site */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_sitename, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* Client Site */
|
|
old_offset=offset;
|
|
offset=dissect_mscldap_string(tvb, offset, str, 255, FALSE);
|
|
proto_tree_add_string(tree, hf_mscldap_clientsitename, tvb, old_offset, offset-old_offset, str);
|
|
|
|
/* get the version number from the end of the buffer, as the
|
|
length is variable and the version determines what fields
|
|
need to be decoded */
|
|
version = tvb_get_letohl(tvb,len-8);
|
|
|
|
/* include the extra fields for version 5 with IP s */
|
|
if ((version & NETLOGON_NT_VERSION_5EX_WITH_IP) == NETLOGON_NT_VERSION_5EX_WITH_IP){
|
|
/* The ip address is returned as a sockaddr_in structure
|
|
*
|
|
* This section may need to be updated if the base Windows APIs
|
|
* are changed to support ipv6, which currently is not the case.
|
|
*
|
|
* The desector assumes the length is based on ipv4 and
|
|
* ignores the length
|
|
*/
|
|
|
|
/* skip the length of the sockaddr_in */
|
|
|
|
offset +=1;
|
|
|
|
/* add IP address and desect the sockaddr_in structure */
|
|
|
|
old_offset = offset + 4;
|
|
item = proto_tree_add_item(tree, hf_mscldap_netlogon_ipaddress, tvb, old_offset, 4, ENC_BIG_ENDIAN);
|
|
|
|
if (tree) {
|
|
proto_tree *subtree;
|
|
|
|
subtree = proto_item_add_subtree(item, ett_mscldap_ipdetails);
|
|
|
|
/* get sockaddr family */
|
|
proto_tree_add_item(subtree, hf_mscldap_netlogon_ipaddress_family, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset +=2;
|
|
|
|
/* get sockaddr port */
|
|
proto_tree_add_item(subtree, hf_mscldap_netlogon_ipaddress_port, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset +=2;
|
|
|
|
/* get IP address */
|
|
proto_tree_add_item(subtree, hf_mscldap_netlogon_ipaddress_ipv4, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
|
|
/* complete the decode with the version and token details */
|
|
|
|
offset = len - 8;
|
|
|
|
/* NETLOGON_NT_VERISON Options (MS-ADTS 6.3.1.1) */
|
|
offset = dissect_mscldap_ntver_flags(tree, tvb, offset);
|
|
|
|
/* LM Token */
|
|
proto_tree_add_item(tree, hf_mscldap_netlogon_lm_token, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset += 2;
|
|
|
|
/* NT Token */
|
|
proto_tree_add_item(tree, hf_mscldap_netlogon_nt_token, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
|
|
static guint
|
|
get_sasl_ldap_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb,
|
|
int offset, void *data _U_)
|
|
{
|
|
/* sasl encapsulated ldap is 4 bytes plus the length in size */
|
|
return tvb_get_ntohl(tvb, offset)+4;
|
|
}
|
|
|
|
static int
|
|
dissect_sasl_ldap_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
dissect_ldap_pdu(tvb, pinfo, tree, FALSE);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static guint
|
|
get_normal_ldap_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb,
|
|
int offset, void *data _U_)
|
|
{
|
|
guint32 len;
|
|
gboolean ind;
|
|
int data_offset;
|
|
|
|
/* normal ldap is tag+len bytes plus the length
|
|
* offset is where the tag is
|
|
* offset+1 is where length starts
|
|
*/
|
|
data_offset=get_ber_length(tvb, offset+1, &len, &ind);
|
|
return len+data_offset-offset;
|
|
}
|
|
|
|
static int
|
|
dissect_normal_ldap_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
dissect_ldap_pdu(tvb, pinfo, tree, FALSE);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_ldap_oid(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
|
|
{
|
|
char *oid;
|
|
const char *oidname;
|
|
|
|
/* tvb here contains an ascii string that is really an oid */
|
|
/* XXX we should convert the string oid into a real oid so we can use
|
|
* proto_tree_add_oid() instead.
|
|
*/
|
|
|
|
oid=tvb_get_string_enc(pinfo->pool, tvb, 0, tvb_reported_length(tvb), ENC_UTF_8|ENC_NA);
|
|
if(!oid){
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
oidname=oid_resolved_from_string(pinfo->pool, oid);
|
|
|
|
if(oidname){
|
|
proto_tree_add_string_format_value(tree, hf_ldap_oid, tvb, 0, tvb_reported_length(tvb), oid, "%s (%s)",oid,oidname);
|
|
} else {
|
|
proto_tree_add_string(tree, hf_ldap_oid, tvb, 0, tvb_captured_length(tvb), oid);
|
|
}
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
#define LDAP_ACCESSMASK_ADS_CREATE_CHILD 0x00000001
|
|
#define LDAP_ACCESSMASK_ADS_DELETE_CHILD 0x00000002
|
|
#define LDAP_ACCESSMASK_ADS_LIST 0x00000004
|
|
#define LDAP_ACCESSMASK_ADS_SELF_WRITE 0x00000008
|
|
#define LDAP_ACCESSMASK_ADS_READ_PROP 0x00000010
|
|
#define LDAP_ACCESSMASK_ADS_WRITE_PROP 0x00000020
|
|
#define LDAP_ACCESSMASK_ADS_DELETE_TREE 0x00000040
|
|
#define LDAP_ACCESSMASK_ADS_LIST_OBJECT 0x00000080
|
|
#define LDAP_ACCESSMASK_ADS_CONTROL_ACCESS 0x00000100
|
|
|
|
static void
|
|
ldap_specific_rights(tvbuff_t *tvb, gint offset, proto_tree *tree, guint32 access)
|
|
{
|
|
static int * const access_flags[] = {
|
|
&hf_ldap_AccessMask_ADS_CONTROL_ACCESS,
|
|
&hf_ldap_AccessMask_ADS_LIST_OBJECT,
|
|
&hf_ldap_AccessMask_ADS_DELETE_TREE,
|
|
&hf_ldap_AccessMask_ADS_WRITE_PROP,
|
|
&hf_ldap_AccessMask_ADS_READ_PROP,
|
|
&hf_ldap_AccessMask_ADS_SELF_WRITE,
|
|
&hf_ldap_AccessMask_ADS_LIST,
|
|
&hf_ldap_AccessMask_ADS_DELETE_CHILD,
|
|
&hf_ldap_AccessMask_ADS_CREATE_CHILD,
|
|
NULL
|
|
};
|
|
|
|
proto_tree_add_bitmask_list_value(tree, tvb, offset, 4, access_flags, access);
|
|
}
|
|
struct access_mask_info ldap_access_mask_info = {
|
|
"LDAP", /* Name of specific rights */
|
|
ldap_specific_rights, /* Dissection function */
|
|
NULL, /* Generic mapping table */
|
|
NULL /* Standard mapping table */
|
|
};
|
|
|
|
static int
|
|
dissect_ldap_nt_sec_desc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
dissect_nt_sec_desc(tvb, 0, pinfo, tree, NULL, TRUE, tvb_reported_length(tvb), &ldap_access_mask_info);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_ldap_sid(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
|
|
{
|
|
char *tmpstr;
|
|
|
|
/* this octet string contains an NT SID */
|
|
dissect_nt_sid(tvb, 0, tree, "SID", &tmpstr, hf_ldap_sid);
|
|
ldapvalue_string=tmpstr;
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_ldap_guid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
guint8 drep[4] = { 0x10, 0x00, 0x00, 0x00}; /* fake DREP struct */
|
|
e_guid_t uuid;
|
|
|
|
/* This octet string contained a GUID */
|
|
dissect_dcerpc_uuid_t(tvb, 0, pinfo, tree, drep, hf_ldap_guid, &uuid);
|
|
|
|
ldapvalue_string=(char*)wmem_alloc(pinfo->pool, 1024);
|
|
snprintf(ldapvalue_string, 1023, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
|
|
uuid.data1, uuid.data2, uuid.data3, uuid.data4[0], uuid.data4[1],
|
|
uuid.data4[2], uuid.data4[3], uuid.data4[4], uuid.data4[5],
|
|
uuid.data4[6], uuid.data4[7]);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_ldap_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
guint32 sasl_len;
|
|
guint32 ldap_len;
|
|
gboolean ind;
|
|
conversation_t *conversation;
|
|
ldap_conv_info_t *ldap_info = NULL;
|
|
|
|
/*
|
|
* Do we have a conversation for this connection?
|
|
*/
|
|
conversation = find_conversation_pinfo(pinfo, 0);
|
|
if(conversation){
|
|
ldap_info = (ldap_conv_info_t *)conversation_get_proto_data(conversation, proto_ldap);
|
|
}
|
|
|
|
ldm_tree = NULL;
|
|
|
|
/* This is a bit tricky. We have to find out whether SASL is used
|
|
* so that we know how big a header we are supposed to pass
|
|
* to tcp_dissect_pdus()
|
|
* We must also cope with the case when a client connects to LDAP
|
|
* and performs a few unauthenticated searches of LDAP before
|
|
* it performs the bind on the same tcp connection.
|
|
*/
|
|
/* check for a SASL header, i.e. assume it is SASL if
|
|
* 1, first four bytes (SASL length) is an integer
|
|
* with a value that must be <LDAP_SASL_MAX_BUF and >2
|
|
* (>2 to fight false positives, 0x00000000 is a common
|
|
* "random" tcp payload)
|
|
* (SASL ldap PDUs might be >64k in size, which is why
|
|
* LDAP_SASL_MAX_BUF is used - defined in packet-ldap.h)
|
|
*
|
|
* 2, we must have a conversation and the auth type must
|
|
* be LDAP_AUTH_SASL
|
|
*/
|
|
sasl_len=tvb_get_ntohl(tvb, 0);
|
|
|
|
if( sasl_len<2 ){
|
|
goto this_was_not_sasl;
|
|
}
|
|
|
|
if( sasl_len>LDAP_SASL_MAX_BUF ){
|
|
goto this_was_not_sasl;
|
|
}
|
|
|
|
if((!ldap_info) || (ldap_info->auth_type!=LDAP_AUTH_SASL) ){
|
|
goto this_was_not_sasl;
|
|
}
|
|
|
|
tcp_dissect_pdus(tvb, pinfo, tree, ldap_desegment, 4, get_sasl_ldap_pdu_len, dissect_sasl_ldap_pdu, data);
|
|
return tvb_captured_length(tvb);
|
|
|
|
this_was_not_sasl:
|
|
/* check if it is a normal BER encoded LDAP packet
|
|
* i.e. first byte is 0x30 followed by a length that is
|
|
* <64k
|
|
* (no ldap PDUs are ever >64kb? )
|
|
*/
|
|
if(tvb_get_guint8(tvb, 0)!=0x30){
|
|
goto this_was_not_normal_ldap;
|
|
}
|
|
|
|
/* check that length makes sense */
|
|
get_ber_length(tvb, 1, &ldap_len, &ind);
|
|
|
|
/* don't check ind since indefinite length is never used for ldap (famous last words)*/
|
|
if(ldap_len<2){
|
|
goto this_was_not_normal_ldap;
|
|
}
|
|
|
|
/*
|
|
* The minimum size of a LDAP pdu is 7 bytes
|
|
*
|
|
* dumpasn1 -hh ldap-unbind-min.dat
|
|
*
|
|
* <30 05 02 01 09 42 00>
|
|
* 0 5: SEQUENCE {
|
|
* <02 01 09>
|
|
* 2 1: INTEGER 9
|
|
* <42 00>
|
|
* 5 0: [APPLICATION 2]
|
|
* : Error: Object has zero length.
|
|
* : }
|
|
*
|
|
* dumpasn1 -hh ldap-unbind-windows.dat
|
|
*
|
|
* <30 84 00 00 00 05 02 01 09 42 00>
|
|
* 0 5: SEQUENCE {
|
|
* <02 01 09>
|
|
* 6 1: INTEGER 9
|
|
* <42 00>
|
|
* 9 0: [APPLICATION 2]
|
|
* : Error: Object has zero length.
|
|
* : }
|
|
*
|
|
* 6 bytes would also be ok to get the full length of
|
|
* the pdu, but as the smallest pdu can be 7 bytes
|
|
* we can use 7.
|
|
*/
|
|
tcp_dissect_pdus(tvb, pinfo, tree, ldap_desegment, 7, get_normal_ldap_pdu_len, dissect_normal_ldap_pdu, data);
|
|
|
|
goto end;
|
|
|
|
this_was_not_normal_ldap:
|
|
|
|
/* Ok it might be a strange case of SASL still
|
|
* It has been seen with Exchange setup to MS AD
|
|
* when Exchange pretend that there is SASL but in fact data are still
|
|
* in clear*/
|
|
if ((sasl_len + 4) == (guint32)tvb_reported_length_remaining(tvb, 0))
|
|
tcp_dissect_pdus(tvb, pinfo, tree, ldap_desegment, 4, get_sasl_ldap_pdu_len, dissect_sasl_ldap_pdu, data);
|
|
end:
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_mscldap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
dissect_ldap_pdu(tvb, pinfo, tree, TRUE);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
|
|
/*--- proto_register_ldap -------------------------------------------*/
|
|
void proto_register_ldap(void) {
|
|
|
|
/* List of fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_ldap_sasl_buffer_length,
|
|
{ "SASL Buffer Length", "ldap.sasl_buffer_length",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_ldap_response_in,
|
|
{ "Response In", "ldap.response_in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
"The response to this LDAP request is in this frame", HFILL }},
|
|
{ &hf_ldap_response_to,
|
|
{ "Response To", "ldap.response_to",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
"This is a response to the LDAP request in this frame", HFILL }},
|
|
{ &hf_ldap_time,
|
|
{ "Time", "ldap.time",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
|
|
"The time between the Call and the Reply", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_opcode,
|
|
{ "Operation code", "mscldap.netlogon.opcode",
|
|
FT_UINT16, BASE_DEC, VALS(netlogon_opcode_vals), 0x0,
|
|
"LDAP ping operation code", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_ipaddress_family,
|
|
{ "Family", "mscldap.netlogon.ipaddress.family",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_ipaddress_ipv4,
|
|
{ "IPv4", "mscldap.netlogon.ipaddress.ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"IP Address", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_ipaddress_port,
|
|
{ "Port", "mscldap.netlogon.ipaddress.port",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_ipaddress,
|
|
{ "IP Address","mscldap.netlogon.ipaddress",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Domain Controller IP Address", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_lm_token,
|
|
{ "LM Token", "mscldap.netlogon.lm_token",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"MUST be set to 0xFFFF", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_nt_token,
|
|
{ "NT Token", "mscldap.netlogon.nt_token",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"MUST be set to 0xFFFF", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags,
|
|
{ "Flags", "mscldap.netlogon.flags",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"Netlogon flags describing the DC properties", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags,
|
|
{ "Version Flags", "mscldap.ntver.flags",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"NETLOGON_NT_VERSION Options Bits", HFILL }},
|
|
|
|
{ &hf_mscldap_domain_guid,
|
|
{ "Domain GUID", "mscldap.domain.guid",
|
|
FT_GUID, BASE_NONE, NULL, 0x0,
|
|
"Value of the NC's GUID attribute", HFILL }},
|
|
|
|
{ &hf_mscldap_forest,
|
|
{ "Forest", "mscldap.forest",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"DNS name of the forest", HFILL }},
|
|
|
|
{ &hf_mscldap_domain,
|
|
{ "Domain", "mscldap.domain",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"DNS name of the NC", HFILL }},
|
|
|
|
{ &hf_mscldap_hostname,
|
|
{ "Hostname", "mscldap.hostname",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"DNS name of server", HFILL }},
|
|
|
|
{ &hf_mscldap_nb_domain_z,
|
|
{ "NetBIOS Domain", "mscldap.nb_domain",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0,
|
|
"NetBIOS name of the NC", HFILL }},
|
|
|
|
{ &hf_mscldap_nb_domain,
|
|
{ "NetBIOS Domain", "mscldap.nb_domain",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"NetBIOS name of the NC", HFILL }},
|
|
|
|
{ &hf_mscldap_nb_hostname_z,
|
|
{ "NetBIOS Hostname", "mscldap.nb_hostname",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0,
|
|
"NetBIOS name of the server", HFILL }},
|
|
|
|
{ &hf_mscldap_nb_hostname,
|
|
{ "NetBIOS Hostname", "mscldap.nb_hostname",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"NetBIOS name of the server", HFILL }},
|
|
|
|
{ &hf_mscldap_username_z,
|
|
{ "Username", "mscldap.username",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0,
|
|
"User specified in client's request", HFILL }},
|
|
|
|
{ &hf_mscldap_username,
|
|
{ "Username", "mscldap.username",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"User specified in client's request", HFILL }},
|
|
|
|
{ &hf_mscldap_sitename,
|
|
{ "Server Site", "mscldap.sitename",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"Site name of the server", HFILL }},
|
|
|
|
{ &hf_mscldap_clientsitename,
|
|
{ "Client Site", "mscldap.clientsitename",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"Site name of the client", HFILL }},
|
|
|
|
{ &hf_ldap_sid,
|
|
{ "Sid", "ldap.sid",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_v1,
|
|
{ "V1", "mscldap.ntver.searchflags.v1", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_v1), 0x00000001, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_v5,
|
|
{ "V5", "mscldap.ntver.searchflags.v5", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_v5), 0x00000002, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_v5ex,
|
|
{ "V5EX", "mscldap.ntver.searchflags.v5ex", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_v5ex), 0x00000004, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_v5ep,
|
|
{ "V5EP", "mscldap.ntver.searchflags.v5ep", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_v5ep), 0x00000008, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_vcs,
|
|
{ "VCS", "mscldap.ntver.searchflags.vcs", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_vcs), 0x00000010, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_vnt4,
|
|
{ "VNT4", "mscldap.ntver.searchflags.vnt4", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_vnt4), 0x01000000, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_vpdc,
|
|
{ "VPDC", "mscldap.ntver.searchflags.vpdc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_vpdc), 0x10000000, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_vip,
|
|
{ "VIP", "mscldap.ntver.searchflags.vip", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_vip), 0x20000000, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_vl,
|
|
{ "VL", "mscldap.ntver.searchflags.vl", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_vl), 0x40000000, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
{ &hf_mscldap_ntver_flags_vgc,
|
|
{ "VGC", "mscldap.ntver.searchflags.vgc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ntver_vgc), 0x80000000, "See section 6.3.1.1 of MS-ADTS specification", HFILL }},
|
|
|
|
|
|
{ &hf_mscldap_netlogon_flags_pdc,
|
|
{ "PDC", "mscldap.netlogon.flags.pdc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_pdc), 0x00000001, "Is this DC a PDC or not?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_gc,
|
|
{ "GC", "mscldap.netlogon.flags.gc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_gc), 0x00000004, "Does this dc service as a GLOBAL CATALOGUE?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_ldap,
|
|
{ "LDAP", "mscldap.netlogon.flags.ldap", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_ldap), 0x00000008, "Does this DC act as an LDAP server?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_ds,
|
|
{ "DS", "mscldap.netlogon.flags.ds", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_ds), 0x00000010, "Does this dc provide DS services?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_kdc,
|
|
{ "KDC", "mscldap.netlogon.flags.kdc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_kdc), 0x00000020, "Does this dc act as a KDC?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_timeserv,
|
|
{ "Time Serv", "mscldap.netlogon.flags.timeserv", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_timeserv), 0x00000040, "Does this dc provide time services (ntp) ?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_closest,
|
|
{ "Closest", "mscldap.netlogon.flags.closest", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_closest), 0x00000080, "Is this the closest dc?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_writable,
|
|
{ "Writable", "mscldap.netlogon.flags.writable", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_writable), 0x00000100, "Is this dc writable?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_good_timeserv,
|
|
{ "Good Time Serv", "mscldap.netlogon.flags.good_timeserv", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_good_timeserv), 0x00000200, "Is this a Good Time Server? (i.e. does it have a hardware clock)", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_ndnc,
|
|
{ "NDNC", "mscldap.netlogon.flags.ndnc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_ndnc), 0x00000400, "Is this an NDNC dc?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_rodc,
|
|
{ "RODC", "mscldap.netlogon.flags.rodc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_rodc), 0x00000800, "Is this an read only dc?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_wdc,
|
|
{ "WDC", "mscldap.netlogon.flags.writabledc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_wdc), 0x00001000, "Is this an writable dc (Windows 2008)?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_dns,
|
|
{ "DNS", "mscldap.netlogon.flags.dnsname", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_dns), 0x20000000, "Does the server have a dns name (Windows 2008)?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_dnc,
|
|
{ "DNC", "mscldap.netlogon.flags.defaultnc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_dnc), 0x40000000, "Is this the default NC (Windows 2008)?", HFILL }},
|
|
|
|
{ &hf_mscldap_netlogon_flags_fnc,
|
|
{ "FDC", "mscldap.netlogon.flags.forestnc", FT_BOOLEAN, 32,
|
|
TFS(&tfs_ads_fnc), 0x80000000, "Is the the NC the default forest root(Windows 2008)?", HFILL }},
|
|
|
|
{ &hf_ldap_guid,
|
|
{ "GUID", "ldap.guid", FT_GUID, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_CREATE_CHILD,
|
|
{ "Ads Create Child", "ldap.AccessMask.ADS_CREATE_CHILD", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_CREATE_CHILD, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_DELETE_CHILD,
|
|
{ "Ads Delete Child", "ldap.AccessMask.ADS_DELETE_CHILD", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_DELETE_CHILD, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_LIST,
|
|
{ "Ads List", "ldap.AccessMask.ADS_LIST", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_LIST, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_SELF_WRITE,
|
|
{ "Ads Self Write", "ldap.AccessMask.ADS_SELF_WRITE", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_SELF_WRITE, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_READ_PROP,
|
|
{ "Ads Read Prop", "ldap.AccessMask.ADS_READ_PROP", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_READ_PROP, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_WRITE_PROP,
|
|
{ "Ads Write Prop", "ldap.AccessMask.ADS_WRITE_PROP", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_WRITE_PROP, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_DELETE_TREE,
|
|
{ "Ads Delete Tree", "ldap.AccessMask.ADS_DELETE_TREE", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_DELETE_TREE, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_LIST_OBJECT,
|
|
{ "Ads List Object", "ldap.AccessMask.ADS_LIST_OBJECT", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_LIST_OBJECT, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_AccessMask_ADS_CONTROL_ACCESS,
|
|
{ "Ads Control Access", "ldap.AccessMask.ADS_CONTROL_ACCESS", FT_BOOLEAN, 32, TFS(&tfs_set_notset), LDAP_ACCESSMASK_ADS_CONTROL_ACCESS, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_LDAPMessage_PDU,
|
|
{ "LDAPMessage", "ldap.LDAPMessage_element", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_object_security_flag,
|
|
{ "Flag Object_Security", "ldap.object_security_flag", FT_BOOLEAN, 32, NULL, 0x00000001, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_ancestor_first_flag,
|
|
{ "Flag Ancestor_First", "ldap.ancestor_first_flag", FT_BOOLEAN, 32, NULL, 0x00000800, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_public_data_only_flag,
|
|
{ "Flag Public_Data_Only", "ldap.public_data_only_flag", FT_BOOLEAN, 32, NULL, 0x00002000, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_incremental_value_flag,
|
|
{ "Flag Incremental_Value", "ldap.incremental_value_flag", FT_BOOLEAN, 32, NULL, 0x80000000, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_oid,
|
|
{ "OID", "ldap.oid", FT_STRING, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_ldap_gssapi_encrypted_payload,
|
|
{ "GSS-API Encrypted payload", "ldap.gssapi_encrypted_payload", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
#include "packet-ldap-hfarr.c"
|
|
};
|
|
|
|
/* List of subtrees */
|
|
static gint *ett[] = {
|
|
&ett_ldap,
|
|
&ett_ldap_payload,
|
|
&ett_ldap_sasl_blob,
|
|
&ett_ldap_msg,
|
|
&ett_mscldap_netlogon_flags,
|
|
&ett_mscldap_ntver_flags,
|
|
&ett_mscldap_ipdetails,
|
|
&ett_ldap_DirSyncFlagsSubEntry,
|
|
|
|
#include "packet-ldap-ettarr.c"
|
|
};
|
|
/* UAT for header fields */
|
|
static uat_field_t custom_attribute_types_uat_fields[] = {
|
|
UAT_FLD_CSTRING(attribute_types, attribute_type, "Attribute type", "Attribute type"),
|
|
UAT_FLD_CSTRING(attribute_types, attribute_desc, "Description", "Description of the value matching type"),
|
|
UAT_END_FIELDS
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_ldap_exceeded_filter_length, { "ldap.exceeded_filter_length", PI_UNDECODED, PI_ERROR, "Filter length exceeds number. Giving up", EXPFILL }},
|
|
{ &ei_ldap_too_many_filter_elements, { "ldap.too_many_filter_elements", PI_UNDECODED, PI_ERROR, "Found more than %%u filter elements. Giving up.", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_ldap;
|
|
module_t *ldap_module;
|
|
uat_t *attributes_uat;
|
|
|
|
/* Register protocol */
|
|
proto_ldap = proto_register_protocol(PNAME, PSNAME, PFNAME);
|
|
/* Register fields and subtrees */
|
|
proto_register_field_array(proto_ldap, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_ldap = expert_register_protocol(proto_ldap);
|
|
expert_register_field_array(expert_ldap, ei, array_length(ei));
|
|
|
|
ldap_handle = register_dissector("ldap", dissect_ldap_tcp, proto_ldap);
|
|
|
|
ldap_module = prefs_register_protocol(proto_ldap, prefs_register_ldap);
|
|
prefs_register_bool_preference(ldap_module, "desegment_ldap_messages",
|
|
"Reassemble LDAP messages spanning multiple TCP segments",
|
|
"Whether the LDAP 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.",
|
|
&ldap_desegment);
|
|
|
|
prefs_register_uint_preference(ldap_module, "tls.port", "LDAPS TCP Port",
|
|
"Set the port for LDAP operations over TLS",
|
|
10, &global_ldaps_tcp_port);
|
|
prefs_register_obsolete_preference(ldap_module, "ssl.port");
|
|
/* UAT */
|
|
attributes_uat = uat_new("Custom LDAP AttributeValue types",
|
|
sizeof(attribute_type_t),
|
|
"custom_ldap_attribute_types",
|
|
TRUE,
|
|
&attribute_types,
|
|
&num_attribute_types,
|
|
/* specifies named fields, so affects dissection
|
|
and the set of named fields */
|
|
UAT_AFFECTS_DISSECTION|UAT_AFFECTS_FIELDS,
|
|
NULL,
|
|
attribute_types_copy_cb,
|
|
attribute_types_update_cb,
|
|
attribute_types_free_cb,
|
|
attribute_types_post_update_cb,
|
|
attribute_types_reset_cb,
|
|
custom_attribute_types_uat_fields);
|
|
|
|
prefs_register_uat_preference(ldap_module, "custom_ldap_attribute_types",
|
|
"Custom AttributeValue types",
|
|
"A table to define custom LDAP attribute type values for which fields can be setup and used for filtering/data extraction etc.",
|
|
attributes_uat);
|
|
|
|
prefs_register_obsolete_preference(ldap_module, "max_pdu");
|
|
|
|
proto_cldap = proto_register_protocol(
|
|
"Connectionless Lightweight Directory Access Protocol",
|
|
"CLDAP", "cldap");
|
|
|
|
ldap_tap=register_tap("ldap");
|
|
|
|
ldap_name_dissector_table = register_dissector_table("ldap.name", "LDAP Attribute Type Dissectors", proto_cldap, FT_STRING, BASE_NONE);
|
|
|
|
register_srt_table(proto_ldap, NULL, 1, ldapstat_packet, ldapstat_init, NULL);
|
|
}
|
|
|
|
|
|
/*--- proto_reg_handoff_ldap ---------------------------------------*/
|
|
void
|
|
proto_reg_handoff_ldap(void)
|
|
{
|
|
dissector_handle_t cldap_handle;
|
|
|
|
cldap_handle = create_dissector_handle(dissect_mscldap, proto_cldap);
|
|
dissector_add_uint_with_preference("udp.port", UDP_PORT_CLDAP, cldap_handle);
|
|
|
|
gssapi_handle = find_dissector_add_dependency("gssapi", proto_ldap);
|
|
gssapi_wrap_handle = find_dissector_add_dependency("gssapi_verf", proto_ldap);
|
|
spnego_handle = find_dissector_add_dependency("spnego", proto_ldap);
|
|
|
|
ntlmssp_handle = find_dissector_add_dependency("ntlmssp", proto_ldap);
|
|
|
|
tls_handle = find_dissector_add_dependency("tls", proto_ldap);
|
|
|
|
prefs_register_ldap();
|
|
|
|
oid_add_from_string("ISO assigned OIDs, USA", "1.2.840");
|
|
|
|
/* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dsml/dsml/ldap_controls_and_session_support.asp */
|
|
/* https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/3c5e87db-4728-4f29-b164-01dd7d7391ea */
|
|
oid_add_from_string("LDAP_PAGED_RESULT_OID_STRING","1.2.840.113556.1.4.319");
|
|
oid_add_from_string("LDAP_SERVER_SHOW_DELETED_OID","1.2.840.113556.1.4.417");
|
|
oid_add_from_string("LDAP_SERVER_SORT_OID","1.2.840.113556.1.4.473");
|
|
oid_add_from_string("LDAP_SERVER_RESP_SORT_OID","1.2.840.113556.1.4.474");
|
|
oid_add_from_string("LDAP_SERVER_CROSSDOM_MOVE_TARGET_OID","1.2.840.113556.1.4.521");
|
|
oid_add_from_string("LDAP_SERVER_NOTIFICATION_OID","1.2.840.113556.1.4.528");
|
|
oid_add_from_string("LDAP_SERVER_EXTENDED_DN_OID","1.2.840.113556.1.4.529");
|
|
oid_add_from_string("meetingAdvertiseScope","1.2.840.113556.1.4.582");
|
|
oid_add_from_string("LDAP_SERVER_LAZY_COMMIT_OID","1.2.840.113556.1.4.619");
|
|
oid_add_from_string("mhsORAddress","1.2.840.113556.1.4.650");
|
|
oid_add_from_string("managedObjects","1.2.840.113556.1.4.654");
|
|
oid_add_from_string("LDAP_CAP_ACTIVE_DIRECTORY_OID","1.2.840.113556.1.4.800");
|
|
oid_add_from_string("LDAP_SERVER_SD_FLAGS_OID","1.2.840.113556.1.4.801");
|
|
oid_add_from_string("LDAP_SERVER_RANGE_OPTION_OID","1.2.840.113556.1.4.802");
|
|
oid_add_from_string("LDAP_OID_COMPARATOR_OR","1.2.840.113556.1.4.804");
|
|
oid_add_from_string("LDAP_SERVER_TREE_DELETE_OID","1.2.840.113556.1.4.805");
|
|
oid_add_from_string("LDAP_SERVER_DIRSYNC_OID","1.2.840.113556.1.4.841");
|
|
oid_add_from_string("LDAP_SERVER_GET_STATS_OID","1.2.840.113556.1.4.970");
|
|
oid_add_from_string("LDAP_SERVER_VERIFY_NAME_OID","1.2.840.113556.1.4.1338");
|
|
oid_add_from_string("LDAP_SERVER_DOMAIN_SCOPE_OID","1.2.840.113556.1.4.1339");
|
|
oid_add_from_string("LDAP_SERVER_SEARCH_OPTIONS_OID","1.2.840.113556.1.4.1340");
|
|
oid_add_from_string("LDAP_SERVER_RODC_DCPROMO_OID","1.2.840.113556.1.4.1341");
|
|
oid_add_from_string("LDAP_SERVER_PERMISSIVE_MODIFY_OID","1.2.840.113556.1.4.1413");
|
|
oid_add_from_string("LDAP_SERVER_ASQ_OID","1.2.840.113556.1.4.1504");
|
|
oid_add_from_string("LDAP_CAP_ACTIVE_DIRECTORY_V51_OID","1.2.840.113556.1.4.1670");
|
|
oid_add_from_string("msDS-SDReferenceDomain","1.2.840.113556.1.4.1711");
|
|
oid_add_from_string("msDS-AdditionalDnsHostName","1.2.840.113556.1.4.1717");
|
|
oid_add_from_string("LDAP_SERVER_FAST_BIND_OID","1.2.840.113556.1.4.1781");
|
|
oid_add_from_string("LDAP_CAP_ACTIVE_DIRECTORY_LDAP_INTEG_OID","1.2.840.113556.1.4.1791");
|
|
oid_add_from_string("msDS-ObjectReference","1.2.840.113556.1.4.1840");
|
|
oid_add_from_string("msDS-QuotaEffective","1.2.840.113556.1.4.1848");
|
|
oid_add_from_string("LDAP_CAP_ACTIVE_DIRECTORY_ADAM_OID","1.2.840.113556.1.4.1851");
|
|
oid_add_from_string("LDAP_SERVER_QUOTA_CONTROL_OID","1.2.840.113556.1.4.1852");
|
|
oid_add_from_string("msDS-PortSSL","1.2.840.113556.1.4.1860");
|
|
oid_add_from_string("LDAP_SERVER_SHUTDOWN_NOTIFY_OID","1.2.840.113556.1.4.1907");
|
|
oid_add_from_string("LDAP_SERVER_RANGE_RETRIEVAL_NOERR_OID","1.2.840.113556.1.4.1948");
|
|
oid_add_from_string("msDS-isRODC","1.2.840.113556.1.4.1960");
|
|
oid_add_from_string("LDAP_SERVER_FORCE_UPDATE_OID","1.2.840.113556.1.4.1974");
|
|
oid_add_from_string("LDAP_SERVER_DN_INPUT_OID","1.2.840.113556.1.4.2026");
|
|
oid_add_from_string("LDAP_SERVER_SHOW_RECYCLED_OID","1.2.840.113556.1.4.2064");
|
|
oid_add_from_string("LDAP_SERVER_SHOW_DEACTIVATED_LINK_OID","1.2.840.113556.1.4.2065");
|
|
oid_add_from_string("LDAP_SERVER_POLICY_HINTS_DEPRECATED_OID","1.2.840.113556.1.4.2066");
|
|
oid_add_from_string("LDAP_SERVER_DIRSYNC_EX_OID","1.2.840.113556.1.4.2090");
|
|
oid_add_from_string("LDAP_SERVER_TREE_DELETE_EX_OID","1.2.840.113556.1.4.2204");
|
|
oid_add_from_string("LDAP_SERVER_UPDATE_STATS_OID","1.2.840.113556.1.4.2205");
|
|
oid_add_from_string("LDAP_SERVER_SEARCH_HINTS_OID","1.2.840.113556.1.4.2206");
|
|
oid_add_from_string("LDAP_SERVER_EXPECTED_ENTRY_COUNT_OID","1.2.840.113556.1.4.2211");
|
|
oid_add_from_string("LDAP_SERVER_POLICY_HINTS_OID","1.2.840.113556.1.4.2239");
|
|
oid_add_from_string("LDAP_SERVER_SET_OWNER_OID","1.2.840.113556.1.4.2255");
|
|
oid_add_from_string("LDAP_SERVER_BYPASS_QUOTA_OID","1.2.840.113556.1.4.2256");
|
|
oid_add_from_string("LDAP_SERVER_LINK_TTL_OID","1.2.840.113556.1.4.2309");
|
|
oid_add_from_string("LDAP_SERVER_SET_CORRELATION_ID_OID","1.2.840.113556.1.4.2330");
|
|
oid_add_from_string("LDAP_SERVER_THREAD_TRACE_OVERRIDE_OID","1.2.840.113556.1.4.2354");
|
|
oid_add_from_string("DYNAMIC_REFRESH","1.3.6.1.4.1.1466.101.119.1");
|
|
oid_add_from_string("LDAP_START_TLS_OID","1.3.6.1.4.1.1466.20037");
|
|
|
|
oid_add_from_string("inetOrgPerson", "2.16.840.1.113730.3.2.2");
|
|
/* RFC2798 */
|
|
oid_add_from_string("US company arc", "2.16.840.1");
|
|
|
|
/* http://www.alvestrand.no/objectid/2.16.840.1.113730.3.4.html */
|
|
oid_add_from_string("Manage DSA IT LDAPv3 control", "2.16.840.1.113730.3.4.2");
|
|
oid_add_from_string("Persistent Search LDAPv3 control", "2.16.840.1.113730.3.4.3");
|
|
oid_add_from_string("Netscape Password Expired LDAPv3 control", "2.16.840.1.113730.3.4.4");
|
|
oid_add_from_string("Netscape Password Expiring LDAPv3 control", "2.16.840.1.113730.3.4.5");
|
|
oid_add_from_string("Netscape NT Synchronization Client LDAPv3 control", "2.16.840.1.113730.3.4.6");
|
|
oid_add_from_string("Entry Change Notification LDAPv3 control", "2.16.840.1.113730.3.4.7");
|
|
oid_add_from_string("Transaction ID Request Control", "2.16.840.1.113730.3.4.8");
|
|
oid_add_from_string("VLV Request LDAPv3 control", "2.16.840.1.113730.3.4.9");
|
|
oid_add_from_string("VLV Response LDAPv3 control", "2.16.840.1.113730.3.4.10");
|
|
oid_add_from_string("Transaction ID Response Control", "2.16.840.1.113730.3.4.11");
|
|
oid_add_from_string("Proxied Authorization (version 1) control", "2.16.840.1.113730.3.4.12");
|
|
oid_add_from_string("iPlanet Directory Server Replication Update Information Control", "2.16.840.1.113730.3.4.13");
|
|
oid_add_from_string("iPlanet Directory Server search on specific backend control", "2.16.840.1.113730.3.4.14");
|
|
oid_add_from_string("Authentication Response Control", "2.16.840.1.113730.3.4.15");
|
|
oid_add_from_string("Authentication Request Control", "2.16.840.1.113730.3.4.16");
|
|
oid_add_from_string("Real Attributes Only Request Control", "2.16.840.1.113730.3.4.17");
|
|
oid_add_from_string("Proxied Authorization (version 2) Control", "2.16.840.1.113730.3.4.18");
|
|
oid_add_from_string("Chaining loop detection", "2.16.840.1.113730.3.4.19");
|
|
oid_add_from_string("iPlanet Replication Modrdn Extra Mods Control", "2.16.840.1.113730.3.4.999");
|
|
|
|
|
|
oid_add_from_string("LDAP_SERVER_QUOTA_CONTROL_OID", "1.2.840.113556.1.4.1852");
|
|
oid_add_from_string("LDAP_SERVER_RANGE_OPTION_OID", "1.2.840.113556.1.4.802");
|
|
oid_add_from_string("LDAP_SERVER_SHUTDOWN_NOTIFY_OID", "1.2.840.113556.1.4.1907");
|
|
oid_add_from_string("LDAP_SERVER_RANGE_RETRIEVAL_NOERR_OID", "1.2.840.113556.1.4.1948");
|
|
|
|
|
|
dissector_add_string("ldap.name", "netlogon", create_dissector_handle(dissect_NetLogon_PDU, proto_cldap));
|
|
dissector_add_string("ldap.name", "objectGUID", create_dissector_handle(dissect_ldap_guid, proto_ldap));
|
|
dissector_add_string("ldap.name", "supportedControl", create_dissector_handle(dissect_ldap_oid, proto_ldap));
|
|
dissector_add_string("ldap.name", "supportedCapabilities", create_dissector_handle(dissect_ldap_oid, proto_ldap));
|
|
dissector_add_string("ldap.name", "objectSid", create_dissector_handle(dissect_ldap_sid, proto_ldap));
|
|
dissector_add_string("ldap.name", "nTSecurityDescriptor", create_dissector_handle(dissect_ldap_nt_sec_desc, proto_ldap));
|
|
|
|
#include "packet-ldap-dis-tab.c"
|
|
|
|
dissector_add_uint_range_with_preference("tcp.port", TCP_PORT_RANGE_LDAP, ldap_handle);
|
|
|
|
dissector_add_uint("acdr.tls_application_port", 636, ldap_handle);
|
|
dissector_add_uint("acdr.tls_application", TLS_APP_LDAP, ldap_handle);
|
|
}
|
|
|
|
static void
|
|
prefs_register_ldap(void)
|
|
{
|
|
if(ssl_port != global_ldaps_tcp_port) {
|
|
if(ssl_port)
|
|
ssl_dissector_delete(ssl_port, ldap_handle);
|
|
|
|
/* Set our port number for future use */
|
|
ssl_port = global_ldaps_tcp_port;
|
|
|
|
if(ssl_port)
|
|
ssl_dissector_add(ssl_port, ldap_handle);
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|