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/* packet-dcerpc.c
* Routines for DCERPC packet disassembly
* Copyright 2001 , Todd Sabin < tas @ webspan . net >
*
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* $ Id : packet - dcerpc . c , v 1.79 2002 / 09 / 26 06 : 13 : 07 sahlberg Exp $
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*
* Ethereal - Network traffic analyzer
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* By Gerald Combs < gerald @ ethereal . com >
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* Copyright 1998 Gerald Combs
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*
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* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version 2
* of the License , or ( at your option ) any later version .
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*
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* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
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*
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* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 59 Temple Place - Suite 330 , Boston , MA 02111 - 1307 , USA .
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include <string.h>
# include <ctype.h>
# include <glib.h>
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# include <epan/packet.h>
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# include "packet-dcerpc.h"
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# include <epan/conversation.h>
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# include "prefs.h"
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# include "reassemble.h"
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static const value_string pckt_vals [ ] = {
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{ PDU_REQ , " Request " } ,
{ PDU_PING , " Ping " } ,
{ PDU_RESP , " Response " } ,
{ PDU_FAULT , " Fault " } ,
{ PDU_WORKING , " Working " } ,
{ PDU_NOCALL , " Nocall " } ,
{ PDU_REJECT , " Reject " } ,
{ PDU_ACK , " Ack " } ,
{ PDU_CL_CANCEL , " Cl_cancel " } ,
{ PDU_FACK , " Fack " } ,
{ PDU_CANCEL_ACK , " Cancel_ack " } ,
{ PDU_BIND , " Bind " } ,
{ PDU_BIND_ACK , " Bind_ack " } ,
{ PDU_BIND_NAK , " Bind_nak " } ,
{ PDU_ALTER , " Alter_context " } ,
{ PDU_ALTER_ACK , " Alter_context_resp " } ,
{ PDU_AUTH3 , " AUTH3? " } ,
{ PDU_SHUTDOWN , " Shutdown " } ,
{ PDU_CO_CANCEL , " Co_cancel " } ,
{ PDU_ORPHANED , " Orphaned " } ,
{ 0 , NULL }
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} ;
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static const value_string drep_byteorder_vals [ ] = {
{ 0 , " Big-endian " } ,
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{ 1 , " Little-endian " } ,
{ 0 , NULL }
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} ;
static const value_string drep_character_vals [ ] = {
{ 0 , " ASCII " } ,
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{ 1 , " EBCDIC " } ,
{ 0 , NULL }
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} ;
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# define DCE_RPC_DREP_FP_IEEE 0
# define DCE_RPC_DREP_FP_VAX 1
# define DCE_RPC_DREP_FP_CRAY 2
# define DCE_RPC_DREP_FP_IBM 3
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static const value_string drep_fp_vals [ ] = {
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{ DCE_RPC_DREP_FP_IEEE , " IEEE " } ,
{ DCE_RPC_DREP_FP_VAX , " VAX " } ,
{ DCE_RPC_DREP_FP_CRAY , " Cray " } ,
{ DCE_RPC_DREP_FP_IBM , " IBM " } ,
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{ 0 , NULL }
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} ;
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/*
* Authentication services .
*/
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# define DCE_C_RPC_AUTHN_PROTOCOL_NONE 0
# define DCE_C_RPC_AUTHN_PROTOCOL_KRB5 1
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# define DCE_C_RPC_AUTHN_PROTOCOL_SPNEGO 9
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# define DCE_C_RPC_AUTHN_PROTOCOL_NTLMSSP 10
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# define DCE_C_RPC_AUTHN_PROTOCOL_SEC_CHAN 68
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static const value_string authn_protocol_vals [ ] = {
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{ DCE_C_RPC_AUTHN_PROTOCOL_NONE , " None " } ,
{ DCE_C_RPC_AUTHN_PROTOCOL_KRB5 , " Kerberos 5 " } ,
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{ DCE_C_RPC_AUTHN_PROTOCOL_SPNEGO , " SPNEGO " } ,
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{ DCE_C_RPC_AUTHN_PROTOCOL_NTLMSSP , " NTLMSSP " } ,
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{ DCE_C_RPC_AUTHN_PROTOCOL_SEC_CHAN , " NETLOGON Secure Channel " } ,
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{ 0 , NULL }
} ;
/*
* Protection levels .
*/
# define DCE_C_AUTHN_LEVEL_NONE 1
# define DCE_C_AUTHN_LEVEL_CONNECT 2
# define DCE_C_AUTHN_LEVEL_CALL 3
# define DCE_C_AUTHN_LEVEL_PKT 4
# define DCE_C_AUTHN_LEVEL_PKT_INTEGRITY 5
# define DCE_C_AUTHN_LEVEL_PKT_PRIVACY 6
static const value_string authn_level_vals [ ] = {
{ DCE_C_AUTHN_LEVEL_NONE , " None " } ,
{ DCE_C_AUTHN_LEVEL_CONNECT , " Connect " } ,
{ DCE_C_AUTHN_LEVEL_CALL , " Call " } ,
{ DCE_C_AUTHN_LEVEL_PKT , " Packet " } ,
{ DCE_C_AUTHN_LEVEL_PKT_INTEGRITY , " Packet integrity " } ,
{ DCE_C_AUTHN_LEVEL_PKT_PRIVACY , " Packet privacy " } ,
{ 0 , NULL }
} ;
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/*
* Flag bits in first flag field in connectionless PDU header .
*/
# define PFCL1_RESERVED_01 0x01 /* Reserved for use by implementations */
# define PFCL1_LASTFRAG 0x02 / * If set, the PDU is the last
* fragment of a multi - PDU
* transmission */
# define PFCL1_FRAG 0x04 / * If set, the PDU is a fragment of
a multi - PDU transmission */
# define PFCL1_NOFACK 0x08 / * If set, the receiver is not
* requested to send a ` fack ' PDU
* for the fragment */
# define PFCL1_MAYBE 0x10 / * If set, the PDU is for a `maybe'
* request */
# define PFCL1_IDEMPOTENT 0x20 / * If set, the PDU is for an idempotent
* request */
# define PFCL1_BROADCAST 0x40 / * If set, the PDU is for a broadcast
* request */
# define PFCL1_RESERVED_80 0x80 /* Reserved for use by implementations */
/*
* Flag bits in second flag field in connectionless PDU header .
*/
# define PFCL2_RESERVED_01 0x01 /* Reserved for use by implementations */
# define PFCL2_CANCEL_PENDING 0x02 /* Cancel pending at the call end */
# define PFCL2_RESERVED_04 0x04 /* Reserved for future use */
# define PFCL2_RESERVED_08 0x08 /* Reserved for future use */
# define PFCL2_RESERVED_10 0x10 /* Reserved for future use */
# define PFCL2_RESERVED_20 0x20 /* Reserved for future use */
# define PFCL2_RESERVED_40 0x40 /* Reserved for future use */
# define PFCL2_RESERVED_80 0x80 /* Reserved for future use */
/*
* Flag bits in connection - oriented PDU header .
*/
# define PFC_FIRST_FRAG 0x01 /* First fragment */
# define PFC_LAST_FRAG 0x02 /* Last fragment */
# define PFC_PENDING_CANCEL 0x04 /* Cancel was pending at sender */
# define PFC_RESERVED_1 0x08
# define PFC_CONC_MPX 0x10 / * suports concurrent multiplexing
* of a single connection . */
# define PFC_DID_NOT_EXECUTE 0x20 / * only meaningful on `fault' packet;
* if true , guaranteed call did not
* execute . */
# define PFC_MAYBE 0x40 /* `maybe' call semantics requested */
# define PFC_OBJECT_UUID 0x80 / * if true, a non-nil object UUID
* was specified in the handle , and
* is present in the optional object
* field . If false , the object field
* is omitted . */
/*
* Tests whether a connection - oriented PDU is fragmented ; returns TRUE if
* it ' s not fragmented ( i . e . , this is both the first * and * last fragment ) ,
* and FALSE otherwise .
*/
# define PFC_NOT_FRAGMENTED(hdr) \
( ( hdr - > flags & ( PFC_FIRST_FRAG | PFC_LAST_FRAG ) ) = = ( PFC_FIRST_FRAG | PFC_LAST_FRAG ) )
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/*
* Presentation context negotiation result .
*/
static const value_string p_cont_result_vals [ ] = {
{ 0 , " Acceptance " } ,
{ 1 , " User rejection " } ,
{ 2 , " Provider rejection " } ,
{ 0 , NULL }
} ;
/*
* Presentation context negotiation rejection reasons .
*/
static const value_string p_provider_reason_vals [ ] = {
{ 0 , " Reason not specified " } ,
{ 1 , " Abstract syntax not supported " } ,
{ 2 , " Proposed transfer syntaxes not supported " } ,
{ 3 , " Local limit exceeded " } ,
{ 0 , NULL }
} ;
/*
* Reject reasons .
*/
# define REASON_NOT_SPECIFIED 0
# define TEMPORARY_CONGESTION 1
# define LOCAL_LIMIT_EXCEEDED 2
# define CALLED_PADDR_UNKNOWN 3 /* not used */
# define PROTOCOL_VERSION_NOT_SUPPORTED 4
# define DEFAULT_CONTEXT_NOT_SUPPORTED 5 /* not used */
# define USER_DATA_NOT_READABLE 6 /* not used */
# define NO_PSAP_AVAILABLE 7 /* not used */
static const value_string reject_reason_vals [ ] = {
{ REASON_NOT_SPECIFIED , " Reason not specified " } ,
{ TEMPORARY_CONGESTION , " Temporary congestion " } ,
{ LOCAL_LIMIT_EXCEEDED , " Local limit exceeded " } ,
{ CALLED_PADDR_UNKNOWN , " Called paddr unknown " } ,
{ PROTOCOL_VERSION_NOT_SUPPORTED , " Protocol version not supported " } ,
{ DEFAULT_CONTEXT_NOT_SUPPORTED , " Default context not supported " } ,
{ USER_DATA_NOT_READABLE , " User data not readable " } ,
{ NO_PSAP_AVAILABLE , " No PSAP available " } ,
{ 0 , NULL }
} ;
/*
* Reject status codes .
*/
static const value_string reject_status_vals [ ] = {
{ 0 , " Stub-defined exception " } ,
{ 0x1c000001 , " nca_s_fault_int_div_by_zero " } ,
{ 0x1c000002 , " nca_s_fault_addr_error " } ,
{ 0x1c000003 , " nca_s_fault_fp_div_zero " } ,
{ 0x1c000004 , " nca_s_fault_fp_underflow " } ,
{ 0x1c000005 , " nca_s_fault_fp_overflow " } ,
{ 0x1c000006 , " nca_s_fault_invalid_tag " } ,
{ 0x1c000007 , " nca_s_fault_invalid_bound " } ,
{ 0x1c000008 , " nca_rpc_version_mismatch " } ,
{ 0x1c000009 , " nca_unspec_reject " } ,
{ 0x1c00000a , " nca_s_bad_actid " } ,
{ 0x1c00000b , " nca_who_are_you_failed " } ,
{ 0x1c00000c , " nca_manager_not_entered " } ,
{ 0x1c00000d , " nca_s_fault_cancel " } ,
{ 0x1c00000e , " nca_s_fault_ill_inst " } ,
{ 0x1c00000f , " nca_s_fault_fp_error " } ,
{ 0x1c000010 , " nca_s_fault_int_overflow " } ,
{ 0x1c000014 , " nca_s_fault_pipe_empty " } ,
{ 0x1c000015 , " nca_s_fault_pipe_closed " } ,
{ 0x1c000016 , " nca_s_fault_pipe_order " } ,
{ 0x1c000017 , " nca_s_fault_pipe_discipline " } ,
{ 0x1c000018 , " nca_s_fault_pipe_comm_error " } ,
{ 0x1c000019 , " nca_s_fault_pipe_memory " } ,
{ 0x1c00001a , " nca_s_fault_context_mismatch " } ,
{ 0x1c00001b , " nca_s_fault_remote_no_memory " } ,
{ 0x1c00001c , " nca_invalid_pres_context_id " } ,
{ 0x1c00001d , " nca_unsupported_authn_level " } ,
{ 0x1c00001f , " nca_invalid_checksum " } ,
{ 0x1c000020 , " nca_invalid_crc " } ,
{ 0x1c000021 , " ncs_s_fault_user_defined " } ,
{ 0x1c000022 , " nca_s_fault_tx_open_failed " } ,
{ 0x1c000023 , " nca_s_fault_codeset_conv_error " } ,
{ 0x1c000024 , " nca_s_fault_object_not_found " } ,
{ 0x1c000025 , " nca_s_fault_no_client_stub " } ,
{ 0x1c010002 , " nca_op_rng_error " } ,
{ 0x1c010003 , " nca_unk_if " } ,
{ 0x1c010006 , " nca_wrong_boot_time " } ,
{ 0x1c010009 , " nca_s_you_crashed " } ,
{ 0x1c01000b , " nca_proto_error " } ,
{ 0x1c010013 , " nca_out_args_too_big " } ,
{ 0x1c010014 , " nca_server_too_busy " } ,
{ 0x1c010017 , " nca_unsupported_type " } ,
{ 0 , NULL }
} ;
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static int proto_dcerpc = - 1 ;
/* field defines */
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static int hf_dcerpc_request_in = - 1 ;
static int hf_dcerpc_response_in = - 1 ;
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static int hf_dcerpc_ver = - 1 ;
static int hf_dcerpc_ver_minor = - 1 ;
static int hf_dcerpc_packet_type = - 1 ;
static int hf_dcerpc_cn_flags = - 1 ;
static int hf_dcerpc_cn_flags_first_frag = - 1 ;
static int hf_dcerpc_cn_flags_last_frag = - 1 ;
static int hf_dcerpc_cn_flags_cancel_pending = - 1 ;
static int hf_dcerpc_cn_flags_reserved = - 1 ;
static int hf_dcerpc_cn_flags_mpx = - 1 ;
static int hf_dcerpc_cn_flags_dne = - 1 ;
static int hf_dcerpc_cn_flags_maybe = - 1 ;
static int hf_dcerpc_cn_flags_object = - 1 ;
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static int hf_dcerpc_drep = - 1 ;
static int hf_dcerpc_drep_byteorder = - 1 ;
static int hf_dcerpc_drep_character = - 1 ;
static int hf_dcerpc_drep_fp = - 1 ;
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static int hf_dcerpc_cn_frag_len = - 1 ;
static int hf_dcerpc_cn_auth_len = - 1 ;
static int hf_dcerpc_cn_call_id = - 1 ;
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static int hf_dcerpc_cn_max_xmit = - 1 ;
static int hf_dcerpc_cn_max_recv = - 1 ;
static int hf_dcerpc_cn_assoc_group = - 1 ;
static int hf_dcerpc_cn_num_ctx_items = - 1 ;
static int hf_dcerpc_cn_ctx_id = - 1 ;
static int hf_dcerpc_cn_num_trans_items = - 1 ;
static int hf_dcerpc_cn_bind_if_id = - 1 ;
static int hf_dcerpc_cn_bind_if_ver = - 1 ;
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static int hf_dcerpc_cn_bind_if_ver_minor = - 1 ;
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static int hf_dcerpc_cn_bind_trans_id = - 1 ;
static int hf_dcerpc_cn_bind_trans_ver = - 1 ;
static int hf_dcerpc_cn_alloc_hint = - 1 ;
static int hf_dcerpc_cn_sec_addr_len = - 1 ;
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static int hf_dcerpc_cn_sec_addr = - 1 ;
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static int hf_dcerpc_cn_num_results = - 1 ;
static int hf_dcerpc_cn_ack_result = - 1 ;
static int hf_dcerpc_cn_ack_reason = - 1 ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
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static int hf_dcerpc_cn_ack_trans_id = - 1 ;
static int hf_dcerpc_cn_ack_trans_ver = - 1 ;
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static int hf_dcerpc_cn_reject_reason = - 1 ;
static int hf_dcerpc_cn_num_protocols = - 1 ;
static int hf_dcerpc_cn_protocol_ver_major = - 1 ;
static int hf_dcerpc_cn_protocol_ver_minor = - 1 ;
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static int hf_dcerpc_cn_cancel_count = - 1 ;
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static int hf_dcerpc_cn_status = - 1 ;
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static int hf_dcerpc_auth_type = - 1 ;
static int hf_dcerpc_auth_level = - 1 ;
static int hf_dcerpc_auth_pad_len = - 1 ;
static int hf_dcerpc_auth_rsrvd = - 1 ;
static int hf_dcerpc_auth_ctx_id = - 1 ;
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static int hf_dcerpc_dg_flags1 = - 1 ;
static int hf_dcerpc_dg_flags1_rsrvd_01 = - 1 ;
static int hf_dcerpc_dg_flags1_last_frag = - 1 ;
static int hf_dcerpc_dg_flags1_frag = - 1 ;
static int hf_dcerpc_dg_flags1_nofack = - 1 ;
static int hf_dcerpc_dg_flags1_maybe = - 1 ;
static int hf_dcerpc_dg_flags1_idempotent = - 1 ;
static int hf_dcerpc_dg_flags1_broadcast = - 1 ;
static int hf_dcerpc_dg_flags1_rsrvd_80 = - 1 ;
static int hf_dcerpc_dg_flags2 = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_01 = - 1 ;
static int hf_dcerpc_dg_flags2_cancel_pending = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_04 = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_08 = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_10 = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_20 = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_40 = - 1 ;
static int hf_dcerpc_dg_flags2_rsrvd_80 = - 1 ;
static int hf_dcerpc_dg_serial_hi = - 1 ;
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static int hf_dcerpc_obj_id = - 1 ;
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static int hf_dcerpc_dg_if_id = - 1 ;
static int hf_dcerpc_dg_act_id = - 1 ;
static int hf_dcerpc_dg_serial_lo = - 1 ;
static int hf_dcerpc_dg_ahint = - 1 ;
static int hf_dcerpc_dg_ihint = - 1 ;
static int hf_dcerpc_dg_frag_len = - 1 ;
static int hf_dcerpc_dg_frag_num = - 1 ;
static int hf_dcerpc_dg_auth_proto = - 1 ;
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static int hf_dcerpc_opnum = - 1 ;
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static int hf_dcerpc_dg_seqnum = - 1 ;
static int hf_dcerpc_dg_server_boot = - 1 ;
static int hf_dcerpc_dg_if_ver = - 1 ;
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static int hf_dcerpc_krb5_av_prot_level = - 1 ;
static int hf_dcerpc_krb5_av_key_vers_num = - 1 ;
static int hf_dcerpc_krb5_av_key_auth_verifier = - 1 ;
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static int hf_dcerpc_dg_cancel_vers = - 1 ;
static int hf_dcerpc_dg_cancel_id = - 1 ;
static int hf_dcerpc_dg_server_accepting_cancels = - 1 ;
static int hf_dcerpc_dg_fack_vers = - 1 ;
static int hf_dcerpc_dg_fack_window_size = - 1 ;
static int hf_dcerpc_dg_fack_max_tsdu = - 1 ;
static int hf_dcerpc_dg_fack_max_frag_size = - 1 ;
static int hf_dcerpc_dg_fack_serial_num = - 1 ;
static int hf_dcerpc_dg_fack_selack_len = - 1 ;
static int hf_dcerpc_dg_fack_selack = - 1 ;
static int hf_dcerpc_dg_status = - 1 ;
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static int hf_dcerpc_array_max_count = - 1 ;
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static int hf_dcerpc_array_offset = - 1 ;
static int hf_dcerpc_array_actual_count = - 1 ;
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static int hf_dcerpc_op = - 1 ;
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static int hf_dcerpc_referent_id = - 1 ;
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static int hf_dcerpc_fragments = - 1 ;
static int hf_dcerpc_fragment = - 1 ;
static int hf_dcerpc_fragment_overlap = - 1 ;
static int hf_dcerpc_fragment_overlap_conflict = - 1 ;
static int hf_dcerpc_fragment_multiple_tails = - 1 ;
static int hf_dcerpc_fragment_too_long_fragment = - 1 ;
static int hf_dcerpc_fragment_error = - 1 ;
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static gint ett_dcerpc = - 1 ;
static gint ett_dcerpc_cn_flags = - 1 ;
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static gint ett_dcerpc_drep = - 1 ;
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static gint ett_dcerpc_dg_flags1 = - 1 ;
static gint ett_dcerpc_dg_flags2 = - 1 ;
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static gint ett_dcerpc_pointer_data = - 1 ;
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static gint ett_dcerpc_fragments = - 1 ;
static gint ett_dcerpc_fragment = - 1 ;
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static gint ett_decrpc_krb5_auth_verf = - 1 ;
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static dissector_handle_t ntlmssp_handle , gssapi_handle ;
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fragment_items dcerpc_frag_items = {
& ett_dcerpc_fragments ,
& ett_dcerpc_fragment ,
& hf_dcerpc_fragments ,
& hf_dcerpc_fragment ,
& hf_dcerpc_fragment_overlap ,
& hf_dcerpc_fragment_overlap_conflict ,
& hf_dcerpc_fragment_multiple_tails ,
& hf_dcerpc_fragment_too_long_fragment ,
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& hf_dcerpc_fragment_error ,
" fragments "
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} ;
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/* try to desegment big DCE/RPC packets over TCP? */
static gboolean dcerpc_cn_desegment = TRUE ;
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/* reassemble DCE/RPC fragments */
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/* reassembly of dcerpc fragments will not work for the case where ONE frame
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might contain multiple dcerpc fragments for different PDUs .
this case would be so unusual / weird so if you got captures like that :
too bad
*/
static gboolean dcerpc_reassemble = FALSE ;
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static GHashTable * dcerpc_co_reassemble_table = NULL ;
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static GHashTable * dcerpc_cl_reassemble_table = NULL ;
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static void
dcerpc_reassemble_init ( void )
{
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fragment_table_init ( & dcerpc_co_reassemble_table ) ;
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fragment_table_init ( & dcerpc_cl_reassemble_table ) ;
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}
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/*
* Subdissectors
*/
/* the registered subdissectors */
static GHashTable * dcerpc_uuids ;
typedef struct _dcerpc_uuid_key {
e_uuid_t uuid ;
guint16 ver ;
} dcerpc_uuid_key ;
typedef struct _dcerpc_uuid_value {
int proto ;
int ett ;
gchar * name ;
dcerpc_sub_dissector * procs ;
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int opnum_hf ;
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} dcerpc_uuid_value ;
static gint
dcerpc_uuid_equal ( gconstpointer k1 , gconstpointer k2 )
{
dcerpc_uuid_key * key1 = ( dcerpc_uuid_key * ) k1 ;
dcerpc_uuid_key * key2 = ( dcerpc_uuid_key * ) k2 ;
return ( ( memcmp ( & key1 - > uuid , & key2 - > uuid , sizeof ( e_uuid_t ) ) = = 0 )
& & ( key1 - > ver = = key2 - > ver ) ) ;
}
static guint
dcerpc_uuid_hash ( gconstpointer k )
{
dcerpc_uuid_key * key = ( dcerpc_uuid_key * ) k ;
/* This isn't perfect, but the Data1 part of these is almost always
unique . */
return key - > uuid . Data1 ;
}
void
dcerpc_init_uuid ( int proto , int ett , e_uuid_t * uuid , guint16 ver ,
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dcerpc_sub_dissector * procs , int opnum_hf )
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{
dcerpc_uuid_key * key = g_malloc ( sizeof ( * key ) ) ;
dcerpc_uuid_value * value = g_malloc ( sizeof ( * value ) ) ;
key - > uuid = * uuid ;
key - > ver = ver ;
value - > proto = proto ;
value - > ett = ett ;
value - > name = proto_get_protocol_short_name ( proto ) ;
value - > procs = procs ;
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value - > opnum_hf = opnum_hf ;
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g_hash_table_insert ( dcerpc_uuids , key , value ) ;
}
/*
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* To keep track of ctx_id mappings .
*
* Everytime we see a bind call we update this table .
* Note that we always specify a SMB FID . For non - SMB transports this
* value is 0.
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*/
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static GHashTable * dcerpc_binds = NULL ;
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typedef struct _dcerpc_bind_key {
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conversation_t * conv ;
guint16 ctx_id ;
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guint16 smb_fid ;
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} dcerpc_bind_key ;
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typedef struct _dcerpc_bind_value {
e_uuid_t uuid ;
guint16 ver ;
} dcerpc_bind_value ;
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static GMemChunk * dcerpc_bind_key_chunk = NULL ;
static GMemChunk * dcerpc_bind_value_chunk = NULL ;
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static gint
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dcerpc_bind_equal ( gconstpointer k1 , gconstpointer k2 )
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{
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dcerpc_bind_key * key1 = ( dcerpc_bind_key * ) k1 ;
dcerpc_bind_key * key2 = ( dcerpc_bind_key * ) k2 ;
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return ( key1 - > conv = = key2 - > conv
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& & key1 - > ctx_id = = key2 - > ctx_id
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& & key1 - > smb_fid = = key2 - > smb_fid ) ;
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}
static guint
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dcerpc_bind_hash ( gconstpointer k )
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{
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dcerpc_bind_key * key = ( dcerpc_bind_key * ) k ;
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return ( ( guint ) key - > conv ) + key - > ctx_id + key - > smb_fid ;
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}
/*
* To keep track of callid mappings . Should really use some generic
* conversation support instead .
*/
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static GHashTable * dcerpc_calls = NULL ;
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typedef struct _dcerpc_call_key {
conversation_t * conv ;
guint32 call_id ;
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guint16 smb_fid ;
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} dcerpc_call_key ;
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static GMemChunk * dcerpc_call_key_chunk = NULL ;
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static GMemChunk * dcerpc_call_value_chunk = NULL ;
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static gint
dcerpc_call_equal ( gconstpointer k1 , gconstpointer k2 )
{
dcerpc_call_key * key1 = ( dcerpc_call_key * ) k1 ;
dcerpc_call_key * key2 = ( dcerpc_call_key * ) k2 ;
return ( key1 - > conv = = key2 - > conv
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& & key1 - > call_id = = key2 - > call_id
& & key1 - > smb_fid = = key2 - > smb_fid ) ;
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}
static guint
dcerpc_call_hash ( gconstpointer k )
{
dcerpc_call_key * key = ( dcerpc_call_key * ) k ;
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return ( ( guint32 ) key - > conv ) + key - > call_id + key - > smb_fid ;
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}
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/* to keep track of matched calls/responses
this one uses the same value struct as calls , but the key is the frame id
*/
static GHashTable * dcerpc_matched = NULL ;
static gint
dcerpc_matched_equal ( gconstpointer k1 , gconstpointer k2 )
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{
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return ( guint32 ) k1 = = ( guint32 ) k2 ;
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}
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static guint
dcerpc_matched_hash ( gconstpointer k )
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{
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return ( guint32 ) k ;
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}
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/*
* Utility functions . Modeled after packet - rpc . c
*/
int
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dissect_dcerpc_uint8 ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
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proto_tree * tree , char * drep ,
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int hfindex , guint8 * pdata )
{
guint8 data ;
data = tvb_get_guint8 ( tvb , offset ) ;
if ( tree ) {
proto_tree_add_item ( tree , hfindex , tvb , offset , 1 , ( drep [ 0 ] & 0x10 ) ) ;
}
if ( pdata )
* pdata = data ;
return offset + 1 ;
}
int
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dissect_dcerpc_uint16 ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
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proto_tree * tree , char * drep ,
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int hfindex , guint16 * pdata )
{
guint16 data ;
data = ( ( drep [ 0 ] & 0x10 )
? tvb_get_letohs ( tvb , offset )
: tvb_get_ntohs ( tvb , offset ) ) ;
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if ( tree ) {
proto_tree_add_item ( tree , hfindex , tvb , offset , 2 , ( drep [ 0 ] & 0x10 ) ) ;
}
if ( pdata )
* pdata = data ;
return offset + 2 ;
}
int
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dissect_dcerpc_uint32 ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
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proto_tree * tree , char * drep ,
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int hfindex , guint32 * pdata )
{
guint32 data ;
data = ( ( drep [ 0 ] & 0x10 )
? tvb_get_letohl ( tvb , offset )
: tvb_get_ntohl ( tvb , offset ) ) ;
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if ( tree ) {
proto_tree_add_item ( tree , hfindex , tvb , offset , 4 , ( drep [ 0 ] & 0x10 ) ) ;
}
if ( pdata )
* pdata = data ;
return offset + 4 ;
}
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/* handles 32 bit unix time_t */
int
dissect_dcerpc_time_t ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
proto_tree * tree , char * drep ,
int hfindex , guint32 * pdata )
{
guint32 data ;
nstime_t tv ;
data = ( ( drep [ 0 ] & 0x10 )
? tvb_get_letohl ( tvb , offset )
: tvb_get_ntohl ( tvb , offset ) ) ;
tv . secs = data ;
tv . nsecs = 0 ;
if ( tree ) {
proto_tree_add_time ( tree , hfindex , tvb , offset , 4 , & tv ) ;
}
if ( pdata )
* pdata = data ;
return offset + 4 ;
}
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int
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dissect_dcerpc_uint64 ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
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proto_tree * tree , char * drep ,
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int hfindex , unsigned char * pdata )
{
if ( pdata ) {
tvb_memcpy ( tvb , pdata , offset , 8 ) ;
if ( drep [ 0 ] & 0x10 ) { /* XXX this might be the wrong way around */
unsigned char data ;
data = pdata [ 0 ] ; pdata [ 0 ] = pdata [ 7 ] ; pdata [ 7 ] = data ;
data = pdata [ 1 ] ; pdata [ 1 ] = pdata [ 6 ] ; pdata [ 6 ] = data ;
data = pdata [ 2 ] ; pdata [ 2 ] = pdata [ 5 ] ; pdata [ 5 ] = data ;
data = pdata [ 3 ] ; pdata [ 3 ] = pdata [ 4 ] ; pdata [ 4 ] = data ;
}
}
if ( tree ) {
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proto_tree_add_item ( tree , hfindex , tvb , offset , 8 , ( drep [ 0 ] & 0x10 ) ) ;
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}
return offset + 8 ;
}
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int
dissect_dcerpc_float ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
proto_tree * tree , char * drep ,
int hfindex , gfloat * pdata )
{
gfloat data ;
switch ( drep [ 1 ] ) {
case ( DCE_RPC_DREP_FP_IEEE ) :
data = ( ( drep [ 0 ] & 0x10 )
? tvb_get_letohieee_float ( tvb , offset )
: tvb_get_ntohieee_float ( tvb , offset ) ) ;
if ( tree ) {
proto_tree_add_float ( tree , hfindex , tvb , offset , 4 , data ) ;
}
break ;
case ( DCE_RPC_DREP_FP_VAX ) : /* (fall trough) */
case ( DCE_RPC_DREP_FP_CRAY ) : /* (fall trough) */
case ( DCE_RPC_DREP_FP_IBM ) : /* (fall trough) */
default :
/* ToBeDone: non IEEE floating formats */
/* Set data to a negative infinity value */
data = - 1.0 * 1e100 * 1e100 ;
if ( tree ) {
proto_tree_add_debug_text ( tree , " DCE RPC: dissection of non IEEE floating formats currently not implemented (drep=%u)! " , drep [ 1 ] ) ;
}
}
if ( pdata )
* pdata = data ;
return offset + 4 ;
}
int
dissect_dcerpc_double ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ ,
proto_tree * tree , char * drep ,
int hfindex , gdouble * pdata )
{
gdouble data ;
switch ( drep [ 1 ] ) {
case ( DCE_RPC_DREP_FP_IEEE ) :
data = ( ( drep [ 0 ] & 0x10 )
? tvb_get_letohieee_double ( tvb , offset )
: tvb_get_ntohieee_double ( tvb , offset ) ) ;
if ( tree ) {
proto_tree_add_double ( tree , hfindex , tvb , offset , 8 , data ) ;
}
break ;
case ( DCE_RPC_DREP_FP_VAX ) : /* (fall trough) */
case ( DCE_RPC_DREP_FP_CRAY ) : /* (fall trough) */
case ( DCE_RPC_DREP_FP_IBM ) : /* (fall trough) */
default :
/* ToBeDone: non IEEE double formats */
/* Set data to a negative infinity value */
data = - 1.0 * 1e100 * 1e100 ;
if ( tree ) {
proto_tree_add_debug_text ( tree , " DCE RPC: dissection of non IEEE double formats currently not implemented (drep=%u)! " , drep [ 1 ] ) ;
}
}
if ( pdata )
* pdata = data ;
return offset + 8 ;
}
2001-07-11 01:25:45 +00:00
/*
* a couple simpler things
*/
2001-03-18 02:13:33 +00:00
guint16
dcerpc_tvb_get_ntohs ( tvbuff_t * tvb , gint offset , char * drep )
{
if ( drep [ 0 ] & 0x10 ) {
return tvb_get_letohs ( tvb , offset ) ;
} else {
return tvb_get_ntohs ( tvb , offset ) ;
}
}
guint32
dcerpc_tvb_get_ntohl ( tvbuff_t * tvb , gint offset , char * drep )
{
if ( drep [ 0 ] & 0x10 ) {
return tvb_get_letohl ( tvb , offset ) ;
} else {
return tvb_get_ntohl ( tvb , offset ) ;
}
}
void
dcerpc_tvb_get_uuid ( tvbuff_t * tvb , gint offset , char * drep , e_uuid_t * uuid )
{
2001-04-27 01:27:37 +00:00
unsigned int i ;
2001-03-18 02:13:33 +00:00
uuid - > Data1 = dcerpc_tvb_get_ntohl ( tvb , offset , drep ) ;
uuid - > Data2 = dcerpc_tvb_get_ntohs ( tvb , offset + 4 , drep ) ;
uuid - > Data3 = dcerpc_tvb_get_ntohs ( tvb , offset + 6 , drep ) ;
for ( i = 0 ; i < sizeof ( uuid - > Data4 ) ; i + + ) {
uuid - > Data4 [ i ] = tvb_get_guint8 ( tvb , offset + 8 + i ) ;
}
}
2002-01-25 08:35:59 +00:00
2002-01-29 09:13:28 +00:00
2002-01-25 08:35:59 +00:00
/* NDR arrays */
/* function to dissect a unidimensional conformant array */
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int
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dissect_ndr_ucarray ( tvbuff_t * tvb , gint offset , packet_info * pinfo ,
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proto_tree * tree , char * drep ,
2002-01-29 09:13:28 +00:00
dcerpc_dissect_fnct_t * fnct )
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{
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guint32 i ;
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dcerpc_info * di ;
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int old_offset ;
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2002-01-29 09:13:28 +00:00
di = pinfo - > private_data ;
if ( di - > conformant_run ) {
/* conformant run, just dissect the max_count header */
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old_offset = offset ;
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di - > conformant_run = 0 ;
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , tree , drep ,
hf_dcerpc_array_max_count , & di - > array_max_count ) ;
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di - > array_max_count_offset = offset - 4 ;
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di - > conformant_run = 1 ;
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di - > conformant_eaten = offset - old_offset ;
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} else {
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/* we dont dont remember where in the bytestream this fields was */
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proto_tree_add_uint ( tree , hf_dcerpc_array_max_count , tvb , di - > array_max_count_offset , 4 , di - > array_max_count ) ;
2002-02-06 06:27:15 +00:00
2002-01-29 09:13:28 +00:00
/* real run, dissect the elements */
for ( i = 0 ; i < di - > array_max_count ; i + + ) {
offset = ( * fnct ) ( tvb , offset , pinfo , tree , drep ) ;
}
}
return offset ;
}
/* function to dissect a unidimensional conformant and varying array */
2002-08-28 21:04:11 +00:00
int
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dissect_ndr_ucvarray ( tvbuff_t * tvb , gint offset , packet_info * pinfo ,
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proto_tree * tree , char * drep ,
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dcerpc_dissect_fnct_t * fnct )
{
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guint32 i ;
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dcerpc_info * di ;
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int old_offset ;
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di = pinfo - > private_data ;
if ( di - > conformant_run ) {
/* conformant run, just dissect the max_count header */
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old_offset = offset ;
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di - > conformant_run = 0 ;
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , tree , drep ,
hf_dcerpc_array_max_count , & di - > array_max_count ) ;
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di - > array_max_count_offset = offset - 4 ;
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offset = dissect_ndr_uint32 ( tvb , offset , pinfo , tree , drep ,
hf_dcerpc_array_offset , & di - > array_offset ) ;
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di - > array_offset_offset = offset - 4 ;
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offset = dissect_ndr_uint32 ( tvb , offset , pinfo , tree , drep ,
hf_dcerpc_array_actual_count , & di - > array_actual_count ) ;
2002-02-11 08:19:09 +00:00
di - > array_actual_count_offset = offset - 4 ;
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di - > conformant_run = 1 ;
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di - > conformant_eaten = offset - old_offset ;
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} else {
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/* we dont dont remember where in the bytestream these fields were */
2002-02-11 08:19:09 +00:00
proto_tree_add_uint ( tree , hf_dcerpc_array_max_count , tvb , di - > array_max_count_offset , 4 , di - > array_max_count ) ;
proto_tree_add_uint ( tree , hf_dcerpc_array_offset , tvb , di - > array_offset_offset , 4 , di - > array_offset ) ;
proto_tree_add_uint ( tree , hf_dcerpc_array_actual_count , tvb , di - > array_actual_count_offset , 4 , di - > array_actual_count ) ;
2002-02-06 06:27:15 +00:00
2002-01-29 09:13:28 +00:00
/* real run, dissect the elements */
for ( i = 0 ; i < di - > array_actual_count ; i + + ) {
offset = ( * fnct ) ( tvb , offset , pinfo , tree , drep ) ;
}
2002-01-25 08:35:59 +00:00
}
return offset ;
}
/* ndr pointer handling */
/* list of pointers encountered so far */
static GSList * ndr_pointer_list = NULL ;
/* position where in the list to insert newly encountered pointers */
static int ndr_pointer_list_pos = 0 ;
/* boolean controlling whether pointers are top-level or embedded */
static gboolean pointers_are_top_level = TRUE ;
/* as a kludge, we represent all embedded reference pointers as id==-1
hoping that his will not collide with any non - ref pointers */
typedef struct ndr_pointer_data {
guint32 id ;
proto_tree * tree ;
dcerpc_dissect_fnct_t * fnct ; /*if non-NULL, we have not called it yet*/
int hf_index ;
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int levels ;
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} ndr_pointer_data_t ;
static void
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init_ndr_pointer_list ( packet_info * pinfo )
2002-01-25 08:35:59 +00:00
{
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dcerpc_info * di ;
di = pinfo - > private_data ;
di - > conformant_run = 0 ;
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while ( ndr_pointer_list ) {
ndr_pointer_data_t * npd ;
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
npd = g_slist_nth_data ( ndr_pointer_list , 0 ) ;
ndr_pointer_list = g_slist_remove ( ndr_pointer_list , npd ) ;
if ( npd ) {
g_free ( npd ) ;
}
}
ndr_pointer_list = NULL ;
ndr_pointer_list_pos = 0 ;
pointers_are_top_level = TRUE ;
}
static int
2002-05-02 21:47:47 +00:00
dissect_deferred_pointers ( packet_info * pinfo , tvbuff_t * tvb , int offset , char * drep )
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{
int found_new_pointer ;
dcerpc_info * di ;
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int old_offset ;
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di = pinfo - > private_data ;
do {
int i , len ;
found_new_pointer = 0 ;
len = g_slist_length ( ndr_pointer_list ) ;
for ( i = 0 ; i < len ; i + + ) {
ndr_pointer_data_t * tnpd ;
tnpd = g_slist_nth_data ( ndr_pointer_list , i ) ;
if ( tnpd - > fnct ) {
dcerpc_dissect_fnct_t * fnct ;
found_new_pointer = 1 ;
fnct = tnpd - > fnct ;
tnpd - > fnct = NULL ;
ndr_pointer_list_pos = i + 1 ;
di - > hf_index = tnpd - > hf_index ;
2002-02-12 07:35:21 +00:00
di - > levels = tnpd - > levels ;
2002-01-29 09:13:28 +00:00
/* first a run to handle any conformant
array headers */
di - > conformant_run = 1 ;
2002-05-07 10:07:55 +00:00
di - > conformant_eaten = 0 ;
old_offset = offset ;
2002-01-29 09:13:28 +00:00
offset = ( * ( fnct ) ) ( tvb , offset , pinfo , NULL , drep ) ;
2002-05-07 10:07:55 +00:00
g_assert ( ( offset - old_offset ) = = di - > conformant_eaten ) ;
/* This is to check for any bugs in the dissectors.
*
* Basically , the NDR representation will store all
2002-08-28 21:04:11 +00:00
* arrays in two blocks , one block with the dimension
2002-05-07 10:07:55 +00:00
* discreption , like size , number of elements and such ,
* and another block that contains the actual data stored
* in the array .
2002-08-28 21:04:11 +00:00
* If the array is embedded directly inside another ,
2002-05-07 10:07:55 +00:00
* encapsulating aggregate type , like a union or struct ,
* then these two blocks will be stored at different places
* in the bytestream , with other data between the blocks .
*
* For this reason , all pointers to types ( both aggregate
* and scalar , for simplicity no distinction is made )
* will have its dissector called twice .
* The dissector will first be called with conformant_run = = 1
* in which mode the dissector MUST NOT consume any data from
* the tvbuff ( i . e . may not dissect anything ) except the
* initial control block for arrays .
2002-08-28 21:04:11 +00:00
* The second time the dissector is called , with
* conformant_run = = 0 , all other data for the type will be
2002-05-07 10:07:55 +00:00
* dissected .
*
* All dissect_ndr_ < type > dissectors are already prepared
* for this and knows when it should eat data from the tvb
* and when not to , so implementors of dissectors will
* normally not need to worry about this or even know about
* it . However , if a dissector for an aggregate type calls
* a subdissector from outside packet - dcerpc . c , such as
* the dissector in packet - smb . c for NT Security Descriptors
* as an example , then it is VERY important to encapsulate
* this call to an external subdissector with the appropriate
* test for conformant_run , i . e . it will need something like
*
* dcerpc_info * di ;
*
* di = pinfo - > private_data ;
* if ( di - > conformant_run ) {
* return offset ;
* }
2002-08-28 21:04:11 +00:00
*
2002-05-07 10:07:55 +00:00
* to make sure it makes the right thing .
* This assert will signal when someone has forgotten to
* make the dissector aware of this requirement .
*/
2002-01-29 09:13:28 +00:00
/* now we dissect the actual pointer */
di - > conformant_run = 0 ;
2002-01-25 08:35:59 +00:00
offset = ( * ( fnct ) ) ( tvb , offset , pinfo , tnpd - > tree , drep ) ;
break ;
}
}
} while ( found_new_pointer ) ;
return offset ;
}
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
static void
2002-08-28 21:04:11 +00:00
add_pointer_to_list ( packet_info * pinfo , proto_tree * tree ,
2002-02-12 07:35:21 +00:00
dcerpc_dissect_fnct_t * fnct , guint32 id , int hf_index , int levels )
2002-01-25 08:35:59 +00:00
{
ndr_pointer_data_t * npd ;
/* check if this pointer is valid */
if ( id ! = 0xffffffff ) {
dcerpc_info * di ;
dcerpc_call_value * value ;
di = pinfo - > private_data ;
value = di - > call_data ;
if ( di - > request ) {
2002-02-12 07:35:21 +00:00
if ( ! ( pinfo - > fd - > flags . visited ) ) {
if ( id > value - > max_ptr ) {
value - > max_ptr = id ;
}
2002-01-25 08:35:59 +00:00
}
} else {
/* if we havent seen the request bail out since we cant
2002-08-28 21:04:11 +00:00
know whether this is the first non - NULL instance
2002-01-25 08:35:59 +00:00
or not */
2002-04-22 09:43:03 +00:00
if ( value - > req_frame = = 0 ) {
2002-01-25 08:35:59 +00:00
/* XXX THROW EXCEPTION */
}
/* We saw this one in the request frame, nothing to
dissect later */
if ( id < = value - > max_ptr ) {
return ;
}
}
}
npd = g_malloc ( sizeof ( ndr_pointer_data_t ) ) ;
npd - > id = id ;
npd - > tree = tree ;
npd - > fnct = fnct ;
npd - > hf_index = hf_index ;
2002-02-12 07:35:21 +00:00
npd - > levels = levels ;
2002-08-28 21:04:11 +00:00
ndr_pointer_list = g_slist_insert ( ndr_pointer_list , npd ,
2002-01-25 08:35:59 +00:00
ndr_pointer_list_pos ) ;
ndr_pointer_list_pos + + ;
}
static int
find_pointer_index ( guint32 id )
{
ndr_pointer_data_t * npd ;
int i , len ;
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
len = g_slist_length ( ndr_pointer_list ) ;
for ( i = 0 ; i < len ; i + + ) {
npd = g_slist_nth_data ( ndr_pointer_list , i ) ;
if ( npd ) {
if ( npd - > id = = id ) {
return i ;
}
}
}
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
return - 1 ;
}
2002-04-30 01:43:12 +00:00
/* This function dissects an NDR pointer and stores the callback for later
2002-08-28 21:04:11 +00:00
* deferred dissection .
2002-04-30 01:43:12 +00:00
*
* fnct is the callback function for when we have reached this object in
2002-08-28 21:04:11 +00:00
* the bytestream .
*
2002-04-30 01:43:12 +00:00
* type is what type of pointer .
*
* this is text is what text we should put in any created tree node .
*
* hf_index is what hf value we want to pass to the callback function when
* it is called , the callback can later pich this one up from di - > hf_index .
2002-08-28 21:04:11 +00:00
*
2002-04-30 01:43:12 +00:00
* levels is a generic int we want to pass to teh callback function . the
* callback can later pick it up from di - > levels
2002-02-12 07:35:21 +00:00
*
* See packet - dcerpc - samr . c for examples
*/
2002-08-28 21:04:11 +00:00
int
2002-01-25 08:35:59 +00:00
dissect_ndr_pointer ( tvbuff_t * tvb , gint offset , packet_info * pinfo ,
2002-04-30 01:43:12 +00:00
proto_tree * tree , char * drep , dcerpc_dissect_fnct_t * fnct ,
int type , char * text , int hf_index , int levels )
2002-01-25 08:35:59 +00:00
{
2002-01-29 09:13:28 +00:00
dcerpc_info * di ;
2002-08-28 21:04:11 +00:00
2002-01-29 09:13:28 +00:00
di = pinfo - > private_data ;
if ( di - > conformant_run ) {
/* this call was only for dissecting the header for any
embedded conformant array . we will not parse any
pointers in this mode .
*/
return offset ;
}
2002-01-25 08:35:59 +00:00
/*TOP LEVEL REFERENCE POINTER*/
if ( pointers_are_top_level
2002-05-23 12:23:29 +00:00
& & ( type = = NDR_POINTER_REF ) ) {
2002-05-27 09:50:58 +00:00
proto_item * item ;
proto_tree * tr ;
/* we must find out a nice way to do the length here */
2002-08-28 21:04:11 +00:00
item = proto_tree_add_text ( tree , tvb , offset , 0 ,
2002-05-27 09:50:58 +00:00
" %s " , text ) ;
tr = proto_item_add_subtree ( item , ett_dcerpc_pointer_data ) ;
add_pointer_to_list ( pinfo , tr , fnct , 0xffffffff , hf_index , levels ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
/*TOP LEVEL FULL POINTER*/
if ( pointers_are_top_level
2002-03-06 08:28:57 +00:00
& & ( type = = NDR_POINTER_PTR ) ) {
2002-01-25 08:35:59 +00:00
int idx ;
guint32 id ;
proto_item * item ;
proto_tree * tr ;
/* get the referent id */
2002-02-08 11:02:03 +00:00
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , NULL , drep , - 1 , & id ) ;
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
/* we got a NULL pointer */
if ( id = = 0 ) {
2002-02-08 11:02:03 +00:00
proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-03-10 03:09:48 +00:00
" (NULL pointer) %s " , text ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
/* see if we have seen this pointer before */
idx = find_pointer_index ( id ) ;
/* we have seen this pointer before */
if ( idx > = 0 ) {
2002-02-08 11:02:03 +00:00
proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-03-06 08:28:57 +00:00
" (duplicate PTR) %s " , text ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
/* new pointer */
2002-08-28 21:04:11 +00:00
item = proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-02-12 07:35:21 +00:00
" %s " , text ) ;
2002-01-25 08:35:59 +00:00
tr = proto_item_add_subtree ( item , ett_dcerpc_pointer_data ) ;
2002-02-12 07:35:21 +00:00
proto_tree_add_uint ( tr , hf_dcerpc_referent_id , tvb , offset - 4 , 4 , id ) ;
add_pointer_to_list ( pinfo , tr , fnct , id , hf_index , levels ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
2002-03-06 08:28:57 +00:00
/*TOP LEVEL UNIQUE POINTER*/
if ( pointers_are_top_level
& & ( type = = NDR_POINTER_UNIQUE ) ) {
guint32 id ;
proto_item * item ;
proto_tree * tr ;
/* get the referent id */
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , NULL , drep , - 1 , & id ) ;
2002-08-28 21:04:11 +00:00
2002-03-06 08:28:57 +00:00
/* we got a NULL pointer */
if ( id = = 0 ) {
proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-03-10 03:11:10 +00:00
" (NULL pointer) %s " , text ) ;
2002-03-06 08:28:57 +00:00
goto after_ref_id ;
}
/* new pointer */
2002-08-28 21:04:11 +00:00
item = proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-03-06 08:28:57 +00:00
" %s " , text ) ;
tr = proto_item_add_subtree ( item , ett_dcerpc_pointer_data ) ;
proto_tree_add_uint ( tr , hf_dcerpc_referent_id , tvb , offset - 4 , 4 , id ) ;
add_pointer_to_list ( pinfo , tr , fnct , 0xffffffff , hf_index , levels ) ;
goto after_ref_id ;
}
2002-01-25 08:35:59 +00:00
/*EMBEDDED REFERENCE POINTER*/
if ( ( ! pointers_are_top_level )
& & ( type = = NDR_POINTER_REF ) ) {
guint32 id ;
proto_item * item ;
proto_tree * tr ;
/* get the referent id */
2002-02-08 11:02:03 +00:00
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , NULL , drep , - 1 , & id ) ;
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
/* new pointer */
2002-08-28 21:04:11 +00:00
item = proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-02-12 07:35:21 +00:00
" %s " , text ) ;
2002-01-25 08:35:59 +00:00
tr = proto_item_add_subtree ( item , ett_dcerpc_pointer_data ) ;
2002-02-12 07:35:21 +00:00
proto_tree_add_uint ( tr , hf_dcerpc_referent_id , tvb , offset - 4 , 4 , id ) ;
add_pointer_to_list ( pinfo , tr , fnct , 0xffffffff , hf_index , levels ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
/*EMBEDDED UNIQUE POINTER*/
if ( ( ! pointers_are_top_level )
2002-02-12 07:35:21 +00:00
& & ( type = = NDR_POINTER_UNIQUE ) ) {
2002-01-25 08:35:59 +00:00
guint32 id ;
proto_item * item ;
proto_tree * tr ;
/* get the referent id */
2002-02-08 11:02:03 +00:00
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , NULL , drep , - 1 , & id ) ;
2002-08-28 21:04:11 +00:00
2002-01-25 08:35:59 +00:00
/* we got a NULL pointer */
if ( id = = 0 ) {
2002-02-08 11:02:03 +00:00
proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-03-10 03:09:48 +00:00
" (NULL pointer) %s " , text ) ;
2002-02-12 07:35:21 +00:00
goto after_ref_id ;
}
/* new pointer */
2002-08-28 21:04:11 +00:00
item = proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-02-12 07:35:21 +00:00
" %s " , text ) ;
tr = proto_item_add_subtree ( item , ett_dcerpc_pointer_data ) ;
proto_tree_add_uint ( tr , hf_dcerpc_referent_id , tvb , offset - 4 , 4 , id ) ;
add_pointer_to_list ( pinfo , tr , fnct , 0xffffffff , hf_index , levels ) ;
goto after_ref_id ;
}
/*EMBEDDED FULL POINTER*/
if ( ( ! pointers_are_top_level )
& & ( type = = NDR_POINTER_PTR ) ) {
int idx ;
guint32 id ;
proto_item * item ;
proto_tree * tr ;
/* get the referent id */
offset = dissect_ndr_uint32 ( tvb , offset , pinfo , NULL , drep , - 1 , & id ) ;
2002-08-28 21:04:11 +00:00
2002-02-12 07:35:21 +00:00
/* we got a NULL pointer */
if ( id = = 0 ) {
proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-03-10 03:09:48 +00:00
" (NULL pointer) %s " , text ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
/* see if we have seen this pointer before */
idx = find_pointer_index ( id ) ;
/* we have seen this pointer before */
if ( idx > = 0 ) {
2002-03-06 08:28:57 +00:00
proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
" (duplicate PTR) %s " , text ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
/* new pointer */
2002-08-28 21:04:11 +00:00
item = proto_tree_add_text ( tree , tvb , offset - 4 , 4 ,
2002-02-12 07:35:21 +00:00
" %s " , text ) ;
2002-01-25 08:35:59 +00:00
tr = proto_item_add_subtree ( item , ett_dcerpc_pointer_data ) ;
2002-02-12 07:35:21 +00:00
proto_tree_add_uint ( tr , hf_dcerpc_referent_id , tvb , offset - 4 , 4 , id ) ;
add_pointer_to_list ( pinfo , tr , fnct , id , hf_index , levels ) ;
2002-01-25 08:35:59 +00:00
goto after_ref_id ;
}
after_ref_id :
/* After each top level pointer we have dissected we have to
dissect all deferrals before we move on to the next top level
argument */
if ( pointers_are_top_level = = TRUE ) {
pointers_are_top_level = FALSE ;
2002-05-02 21:47:47 +00:00
offset = dissect_deferred_pointers ( pinfo , tvb , offset , drep ) ;
2002-01-25 08:35:59 +00:00
pointers_are_top_level = TRUE ;
}
return offset ;
}
2002-01-29 09:13:28 +00:00
2001-07-11 01:25:45 +00:00
static int
dcerpc_try_handoff ( packet_info * pinfo , proto_tree * tree ,
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
proto_tree * dcerpc_tree ,
2001-07-11 01:25:45 +00:00
tvbuff_t * tvb , gint offset ,
2002-03-21 09:35:52 +00:00
char * drep , dcerpc_info * info ,
int auth_level )
2001-07-11 01:25:45 +00:00
{
dcerpc_uuid_key key ;
dcerpc_uuid_value * sub_proto ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
int length ;
2001-11-12 09:04:11 +00:00
proto_tree * sub_tree = NULL ;
2001-07-11 01:25:45 +00:00
dcerpc_sub_dissector * proc ;
gchar * name = NULL ;
2001-11-27 09:27:29 +00:00
dcerpc_dissect_fnct_t * sub_dissect ;
2001-12-17 23:08:51 +00:00
const char * saved_proto ;
2002-01-03 20:42:41 +00:00
void * saved_private_data ;
2001-07-11 01:25:45 +00:00
2002-01-23 05:38:32 +00:00
key . uuid = info - > call_data - > uuid ;
key . ver = info - > call_data - > ver ;
2001-07-11 01:25:45 +00:00
2002-08-28 21:04:11 +00:00
2001-12-17 23:08:51 +00:00
if ( ( sub_proto = g_hash_table_lookup ( dcerpc_uuids , & key ) ) = = NULL
| | ! proto_is_protocol_enabled ( sub_proto - > proto ) ) {
/*
* We don ' t have a dissector for this UUID , or the protocol
* for that UUID is disabled .
*/
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
length = tvb_length_remaining ( tvb , offset ) ;
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Stub data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
2001-07-11 01:25:45 +00:00
return - 1 ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
}
2001-07-11 01:25:45 +00:00
for ( proc = sub_proto - > procs ; proc - > name ; proc + + ) {
2002-06-24 09:23:39 +00:00
if ( proc - > num = = info - > call_data - > opnum ) {
2001-07-11 01:25:45 +00:00
name = proc - > name ;
break ;
}
}
if ( ! name )
name = " Unknown?! " ;
2002-03-22 09:44:58 +00:00
if ( check_col ( pinfo - > cinfo , COL_PROTOCOL ) ) {
col_set_str ( pinfo - > cinfo , COL_PROTOCOL , sub_proto - > name ) ;
}
2001-12-10 00:26:21 +00:00
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
2002-04-30 01:43:12 +00:00
col_add_fstr ( pinfo - > cinfo , COL_INFO , " %s %s " ,
2002-06-24 09:23:39 +00:00
name , info - > request ? " request " : " reply " ) ;
2001-07-11 01:25:45 +00:00
}
2002-03-22 09:44:58 +00:00
if ( tree ) {
proto_item * sub_item ;
2002-08-28 21:04:11 +00:00
sub_item = proto_tree_add_item ( tree , sub_proto - > proto , tvb , offset ,
2002-03-22 09:44:58 +00:00
- 1 , FALSE ) ;
if ( sub_item ) {
sub_tree = proto_item_add_subtree ( sub_item , sub_proto - > ett ) ;
}
2002-08-28 21:04:11 +00:00
2002-03-22 09:44:58 +00:00
/*
* Put the operation number into the tree along with
* the operation ' s name .
*/
2002-06-24 00:03:18 +00:00
if ( sub_proto - > opnum_hf ! = - 1 )
proto_tree_add_uint_format ( sub_tree , sub_proto - > opnum_hf ,
2002-06-24 09:23:39 +00:00
tvb , 0 , 0 , info - > call_data - > opnum ,
2002-06-24 00:03:18 +00:00
" Operation: %s (%u) " ,
2002-06-24 09:23:39 +00:00
name , info - > call_data - > opnum ) ;
2002-06-24 00:03:18 +00:00
else
proto_tree_add_uint_format ( sub_tree , hf_dcerpc_op , tvb ,
2002-06-24 09:23:39 +00:00
0 , 0 , info - > call_data - > opnum ,
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" Operation: %s (%u) " ,
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name , info - > call_data - > opnum ) ;
2001-07-11 01:25:45 +00:00
}
2001-11-12 09:04:11 +00:00
2002-08-28 21:04:11 +00:00
/*
2002-03-21 09:35:52 +00:00
* If the authentication level is DCE_C_AUTHN_LEVEL_PKT_PRIVACY ,
* the stub data is encrypted , and we can ' t dissect it .
*/
if ( auth_level = = DCE_C_AUTHN_LEVEL_PKT_PRIVACY ) {
2001-11-27 09:27:29 +00:00
length = tvb_length_remaining ( tvb , offset ) ;
if ( length > 0 ) {
2002-03-21 09:35:52 +00:00
proto_tree_add_text ( sub_tree , tvb , offset , length ,
" Encrypted stub data (%d byte%s) " ,
length , plurality ( length , " " , " s " ) ) ;
}
} else {
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sub_dissect = info - > request ? proc - > dissect_rqst : proc - > dissect_resp ;
2002-03-21 09:35:52 +00:00
if ( sub_dissect ) {
saved_proto = pinfo - > current_proto ;
saved_private_data = pinfo - > private_data ;
pinfo - > current_proto = sub_proto - > name ;
pinfo - > private_data = ( void * ) info ;
init_ndr_pointer_list ( pinfo ) ;
offset = sub_dissect ( tvb , offset , pinfo , sub_tree , drep ) ;
pinfo - > current_proto = saved_proto ;
pinfo - > private_data = saved_private_data ;
} else {
length = tvb_length_remaining ( tvb , offset ) ;
if ( length > 0 ) {
proto_tree_add_text ( sub_tree , tvb , offset , length ,
" Stub data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
2001-11-27 09:27:29 +00:00
}
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}
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return 0 ;
}
2001-09-28 22:43:57 +00:00
static int
dissect_dcerpc_cn_auth ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * dcerpc_tree ,
2002-03-21 09:35:52 +00:00
e_dce_cn_common_hdr_t * hdr , int * auth_level_p )
2001-09-28 22:43:57 +00:00
{
int offset ;
guint8 auth_pad_len ;
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guint8 auth_level ;
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guint8 auth_type ;
2002-03-21 09:35:52 +00:00
/*
* Initially set " *auth_level_p " to - 1 to indicate that we haven ' t
* yet seen any authentication level information .
*/
if ( auth_level_p ! = NULL )
* auth_level_p = - 1 ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
2001-09-28 22:43:57 +00:00
/*
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
* The authentication information is at the * end * of the PDU ; in
* request and response PDUs , the request and response stub data
* come before it .
*
2001-09-28 22:43:57 +00:00
* If the full packet is here , and we ' ve got an auth len , and it ' s
2002-03-21 09:35:52 +00:00
* valid , then dissect the auth info .
2001-09-28 22:43:57 +00:00
*/
if ( tvb_length ( tvb ) > = hdr - > frag_len
& & hdr - > auth_len
& & ( hdr - > auth_len + 8 < = hdr - > frag_len ) ) {
offset = hdr - > frag_len - ( hdr - > auth_len + 8 ) ;
2002-08-28 21:04:11 +00:00
2001-09-28 22:43:57 +00:00
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
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hf_dcerpc_auth_type , & auth_type ) ;
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offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
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hf_dcerpc_auth_level , & auth_level ) ;
if ( auth_level_p ! = NULL )
* auth_level_p = auth_level ;
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offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_auth_pad_len , & auth_pad_len ) ;
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_auth_rsrvd , NULL ) ;
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_auth_ctx_id , NULL ) ;
2002-08-22 20:04:55 +00:00
/* Dissect the authentication data */
switch ( auth_type ) {
/* NTLMSSP */
case DCE_C_RPC_AUTHN_PROTOCOL_NTLMSSP : {
tvbuff_t * ntlmssp_tvb ;
ntlmssp_tvb = tvb_new_subset ( tvb , offset , hdr - > auth_len ,
hdr - > auth_len ) ;
2002-08-28 21:04:11 +00:00
call_dissector ( ntlmssp_handle , ntlmssp_tvb , pinfo ,
2002-08-22 20:04:55 +00:00
dcerpc_tree ) ;
break ;
}
2002-08-30 05:13:45 +00:00
/* SPNEGO (rfc2478) */
2002-08-22 20:04:55 +00:00
2002-08-30 05:13:45 +00:00
case DCE_C_RPC_AUTHN_PROTOCOL_SPNEGO : {
2002-08-22 20:04:55 +00:00
tvbuff_t * gssapi_tvb ;
gssapi_tvb = tvb_new_subset ( tvb , offset , hdr - > auth_len ,
hdr - > auth_len ) ;
call_dissector ( gssapi_handle , gssapi_tvb , pinfo , dcerpc_tree ) ;
break ;
}
default :
proto_tree_add_text ( dcerpc_tree , tvb , offset , hdr - > auth_len ,
" Auth Data " ) ;
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}
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/* figure out where the auth padding starts */
offset = hdr - > frag_len - ( hdr - > auth_len + 8 + auth_pad_len ) ;
if ( offset > 0 & & auth_pad_len ) {
2002-08-28 21:04:11 +00:00
proto_tree_add_text ( dcerpc_tree , tvb , offset ,
2001-09-28 22:43:57 +00:00
auth_pad_len , " Auth padding " ) ;
return hdr - > auth_len + 8 + auth_pad_len ;
} else {
return hdr - > auth_len + 8 ;
}
} else {
return 0 ;
}
}
2001-11-18 22:44:08 +00:00
/* We need to hash in the SMB fid number to generate a unique hash table
key as DCERPC over SMB allows several pipes over the same TCP / IP
socket . */
2001-11-27 09:27:29 +00:00
static guint16 get_smb_fid ( void * private_data )
2001-11-18 22:44:08 +00:00
{
2001-11-27 09:27:29 +00:00
dcerpc_private_info * priv = ( dcerpc_private_info * ) private_data ;
2002-08-28 21:04:11 +00:00
2001-11-27 09:27:29 +00:00
if ( ! priv )
return 0 ; /* Nothing to see here */
2001-11-18 22:44:08 +00:00
2001-11-27 09:27:29 +00:00
/* DCERPC over smb */
2001-11-18 22:44:08 +00:00
2001-11-27 09:27:29 +00:00
if ( priv - > transport_type = = DCERPC_TRANSPORT_SMB )
return priv - > data . smb . fid ;
2001-11-18 22:44:08 +00:00
2001-11-27 09:27:29 +00:00
/* Some other transport... */
2001-11-18 22:44:08 +00:00
2001-11-27 09:27:29 +00:00
return 0 ;
2001-11-18 22:44:08 +00:00
}
2001-07-11 01:25:45 +00:00
/*
* Connection oriented packet types
*/
2001-03-18 02:13:33 +00:00
2001-04-19 23:39:27 +00:00
static void
dissect_dcerpc_cn_bind ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * dcerpc_tree ,
e_dce_cn_common_hdr_t * hdr )
{
2001-07-11 01:25:45 +00:00
conversation_t * conv = NULL ;
2001-04-19 23:39:27 +00:00
guint8 num_ctx_items ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
guint i ;
gboolean saw_ctx_item = FALSE ;
2001-04-19 23:39:27 +00:00
guint16 ctx_id ;
guint16 num_trans_items ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
guint j ;
2001-04-19 23:39:27 +00:00
e_uuid_t if_id ;
e_uuid_t trans_id ;
2001-07-11 01:25:45 +00:00
guint32 trans_ver ;
guint16 if_ver , if_ver_minor ;
2001-04-19 23:39:27 +00:00
int offset = 16 ;
2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_max_xmit , NULL ) ;
2001-04-19 23:39:27 +00:00
2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_max_recv , NULL ) ;
2001-04-19 23:39:27 +00:00
2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_assoc_group , NULL ) ;
2001-04-19 23:39:27 +00:00
2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_num_ctx_items , & num_ctx_items ) ;
2001-04-19 23:39:27 +00:00
/* padding */
offset + = 3 ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
for ( i = 0 ; i < num_ctx_items ; i + + ) {
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_ctx_id , & ctx_id ) ;
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_num_trans_items , & num_trans_items ) ;
dcerpc_tvb_get_uuid ( tvb , offset , hdr - > drep , & if_id ) ;
if ( dcerpc_tree ) {
proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_cn_bind_if_id , tvb ,
offset , 16 , " HMMM " ,
" Interface UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
if_id . Data1 , if_id . Data2 , if_id . Data3 ,
if_id . Data4 [ 0 ] , if_id . Data4 [ 1 ] ,
if_id . Data4 [ 2 ] , if_id . Data4 [ 3 ] ,
if_id . Data4 [ 4 ] , if_id . Data4 [ 5 ] ,
if_id . Data4 [ 6 ] , if_id . Data4 [ 7 ] ) ;
}
offset + = 16 ;
if ( hdr - > drep [ 0 ] & 0x10 ) {
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_bind_if_ver , & if_ver ) ;
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_bind_if_ver_minor , & if_ver_minor ) ;
} else {
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_bind_if_ver_minor , & if_ver_minor ) ;
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_bind_if_ver , & if_ver ) ;
}
if ( ! saw_ctx_item ) {
conv = find_conversation ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
pinfo - > srcport , pinfo - > destport , 0 ) ;
if ( conv = = NULL ) {
conv = conversation_new ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
pinfo - > srcport , pinfo - > destport , 0 ) ;
}
2001-04-19 23:39:27 +00:00
2002-01-23 05:38:32 +00:00
/* if this is the first time we see this packet, we need to
update the dcerpc_binds table so that any later calls can
match to the interface .
XXX We assume that BINDs will NEVER be fragmented .
*/
if ( ! ( pinfo - > fd - > flags . visited ) ) {
dcerpc_bind_key * key ;
dcerpc_bind_value * value ;
key = g_mem_chunk_alloc ( dcerpc_bind_key_chunk ) ;
key - > conv = conv ;
key - > ctx_id = ctx_id ;
key - > smb_fid = get_smb_fid ( pinfo - > private_data ) ;
value = g_mem_chunk_alloc ( dcerpc_bind_value_chunk ) ;
value - > uuid = if_id ;
value - > ver = if_ver ;
/* add this entry to the bind table, first removing any
previous ones that are identical
*/
if ( g_hash_table_lookup ( dcerpc_binds , key ) ) {
g_hash_table_remove ( dcerpc_binds , key ) ;
}
g_hash_table_insert ( dcerpc_binds , key , value ) ;
}
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
2001-12-10 00:26:21 +00:00
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
2002-08-13 07:25:36 +00:00
dcerpc_uuid_key key ;
dcerpc_uuid_value * value ;
key . uuid = if_id ;
key . ver = if_ver ;
if ( ( value = g_hash_table_lookup ( dcerpc_uuids , & key ) ) )
col_append_fstr ( pinfo - > cinfo , COL_INFO , " UUID: %s " , value - > name ) ;
else
col_append_fstr ( pinfo - > cinfo , COL_INFO , " UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x ver %u.%u " ,
2002-06-19 08:34:38 +00:00
if_id . Data1 , if_id . Data2 , if_id . Data3 ,
if_id . Data4 [ 0 ] , if_id . Data4 [ 1 ] ,
if_id . Data4 [ 2 ] , if_id . Data4 [ 3 ] ,
if_id . Data4 [ 4 ] , if_id . Data4 [ 5 ] ,
if_id . Data4 [ 6 ] , if_id . Data4 [ 7 ] ,
if_ver , if_ver_minor ) ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
}
saw_ctx_item = TRUE ;
}
2001-04-19 23:39:27 +00:00
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
for ( j = 0 ; j < num_trans_items ; j + + ) {
dcerpc_tvb_get_uuid ( tvb , offset , hdr - > drep , & trans_id ) ;
if ( dcerpc_tree ) {
proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_cn_bind_trans_id , tvb ,
offset , 16 , " HMMM " ,
" Transfer Syntax: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
trans_id . Data1 , trans_id . Data2 , trans_id . Data3 ,
trans_id . Data4 [ 0 ] , trans_id . Data4 [ 1 ] ,
trans_id . Data4 [ 2 ] , trans_id . Data4 [ 3 ] ,
trans_id . Data4 [ 4 ] , trans_id . Data4 [ 5 ] ,
trans_id . Data4 [ 6 ] , trans_id . Data4 [ 7 ] ) ;
}
offset + = 16 ;
2001-04-19 23:39:27 +00:00
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_bind_trans_ver , & trans_ver ) ;
}
2001-07-11 01:25:45 +00:00
}
2002-03-21 09:35:52 +00:00
/*
* XXX - we should save the authentication type * if * we have
* an authentication header , and associate it with an authentication
* context , so subsequent PDUs can use that context .
*/
dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , hdr , NULL ) ;
2001-04-19 23:39:27 +00:00
}
static void
dissect_dcerpc_cn_bind_ack ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * dcerpc_tree ,
e_dce_cn_common_hdr_t * hdr )
{
guint16 max_xmit , max_recv ;
guint16 sec_addr_len ;
guint8 num_results ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
guint i ;
guint16 result ;
guint16 reason ;
e_uuid_t trans_id ;
guint32 trans_ver ;
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int offset = 16 ;
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offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_max_xmit , & max_xmit ) ;
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2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_max_recv , & max_recv ) ;
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2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_assoc_group , NULL ) ;
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offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_sec_addr_len , & sec_addr_len ) ;
2002-03-18 07:56:06 +00:00
if ( sec_addr_len ! = 0 ) {
proto_tree_add_item ( dcerpc_tree , hf_dcerpc_cn_sec_addr , tvb , offset ,
sec_addr_len , FALSE ) ;
offset + = sec_addr_len ;
}
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if ( offset % 4 ) {
offset + = 4 - offset % 4 ;
}
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offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_num_results , & num_results ) ;
2001-04-19 23:39:27 +00:00
/* padding */
offset + = 3 ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
for ( i = 0 ; i < num_results ; i + + ) {
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offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_cn_ack_result ,
& result ) ;
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if ( result ! = 0 ) {
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offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_cn_ack_reason ,
& reason ) ;
} else {
/*
* The reason for rejection isn ' t meaningful , and often isn ' t
* set , when the syntax was accepted .
*/
offset + = 2 ;
}
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
dcerpc_tvb_get_uuid ( tvb , offset , hdr - > drep , & trans_id ) ;
if ( dcerpc_tree ) {
proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_cn_ack_trans_id , tvb ,
offset , 16 , " HMMM " ,
" Transfer Syntax: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
trans_id . Data1 , trans_id . Data2 , trans_id . Data3 ,
trans_id . Data4 [ 0 ] , trans_id . Data4 [ 1 ] ,
trans_id . Data4 [ 2 ] , trans_id . Data4 [ 3 ] ,
trans_id . Data4 [ 4 ] , trans_id . Data4 [ 5 ] ,
trans_id . Data4 [ 6 ] , trans_id . Data4 [ 7 ] ) ;
}
offset + = 16 ;
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_ack_trans_ver , & trans_ver ) ;
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}
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/*
* XXX - do we need to do anything with the authentication level
* we get back from this ?
*/
dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , hdr , NULL ) ;
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if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
if ( num_results ! = 0 & & result = = 0 ) {
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/* XXX - only checks the last result */
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" accept max_xmit: %u max_recv: %u " ,
max_xmit , max_recv ) ;
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} else {
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/* XXX - only shows the last result and reason */
col_append_fstr ( pinfo - > cinfo , COL_INFO , " %s, reason: %s " ,
val_to_str ( result , p_cont_result_vals ,
" Unknown result (%u) " ) ,
val_to_str ( reason , p_provider_reason_vals ,
" Unknown (%u) " ) ) ;
}
}
}
static void
dissect_dcerpc_cn_bind_nak ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * dcerpc_tree ,
e_dce_cn_common_hdr_t * hdr )
{
guint16 reason ;
guint8 num_protocols ;
guint i ;
int offset = 16 ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_cn_reject_reason ,
& reason ) ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO , " reason: %s " ,
val_to_str ( reason , reject_reason_vals , " Unknown (%u) " ) ) ;
}
if ( reason = = PROTOCOL_VERSION_NOT_SUPPORTED ) {
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_num_protocols ,
& num_protocols ) ;
for ( i = 0 ; i < num_protocols ; i + + ) {
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_cn_protocol_ver_major ,
NULL ) ;
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offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_cn_protocol_ver_minor ,
NULL ) ;
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}
}
}
2002-06-24 09:23:39 +00:00
static void
dissect_dcerpc_cn_stub ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree , proto_tree * tree ,
e_dce_cn_common_hdr_t * hdr , dcerpc_info * di ,
int auth_sz , int auth_level , guint32 alloc_hint ,
guint32 frame )
{
int length , reported_length , stub_length ;
gboolean save_fragmented ;
length = tvb_length_remaining ( tvb , offset ) ;
reported_length = tvb_reported_length_remaining ( tvb , offset ) ;
stub_length = hdr - > frag_len - offset - auth_sz ;
if ( length > stub_length )
length = stub_length ;
if ( reported_length > stub_length )
reported_length = stub_length ;
save_fragmented = pinfo - > fragmented ;
/* If we don't have reassembly enabled, or this packet contains
the entire PDU , or if this is a short frame ( or a frame
not reassembled at a lower layer ) that doesn ' t include all
the data in the fragment , just call the handoff directly if
this is the first fragment or the PDU isn ' t fragmented . */
if ( ( ! dcerpc_reassemble ) | | PFC_NOT_FRAGMENTED ( hdr ) | |
stub_length > length ) {
if ( hdr - > flags & PFC_FIRST_FRAG ) {
/* First fragment, possibly the only fragment */
pinfo - > fragmented = ! PFC_NOT_FRAGMENTED ( hdr ) ;
dcerpc_try_handoff ( pinfo , tree , dcerpc_tree ,
tvb_new_subset ( tvb , offset , length ,
reported_length ) ,
0 , hdr - > drep , di , auth_level ) ;
} else {
/* PDU is fragmented and this isn't the first fragment */
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
}
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fragment data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
}
} else {
/* Reassembly is enabled, the PDU is fragmented, and
we have all the data in the fragment ; the first two
of those mean we should attempt reassembly , and the
third means we can attempt reassembly . */
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fragment data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
if ( hdr - > flags & PFC_FIRST_FRAG ) { /* FIRST fragment */
if ( ( ! pinfo - > fd - > flags . visited ) & & frame ) {
fragment_add ( tvb , offset , pinfo , frame ,
dcerpc_co_reassemble_table ,
0 ,
length ,
TRUE ) ;
fragment_set_tot_len ( pinfo , frame ,
dcerpc_co_reassemble_table , alloc_hint ) ;
}
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
}
} else if ( hdr - > flags & PFC_LAST_FRAG ) { /* LAST fragment */
if ( frame ) {
fragment_data * fd_head ;
guint32 tot_len ;
tot_len = fragment_get_tot_len ( pinfo , frame ,
dcerpc_co_reassemble_table ) ;
2002-08-28 21:04:11 +00:00
fd_head = fragment_add ( tvb , offset , pinfo ,
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frame ,
dcerpc_co_reassemble_table ,
tot_len - alloc_hint ,
length ,
TRUE ) ;
if ( fd_head ) {
/* We completed reassembly */
tvbuff_t * next_tvb ;
next_tvb = tvb_new_real_data ( fd_head - > data , fd_head - > datalen , fd_head - > datalen ) ;
tvb_set_child_real_data_tvbuff ( tvb , next_tvb ) ;
add_new_data_source ( pinfo , next_tvb , " Reassembled DCE/RPC " ) ;
show_fragment_tree ( fd_head , & dcerpc_frag_items ,
dcerpc_tree , pinfo , next_tvb ) ;
pinfo - > fragmented = FALSE ;
dcerpc_try_handoff ( pinfo , tree , dcerpc_tree , next_tvb ,
0 , hdr - > drep , di , auth_level ) ;
} else {
/* Reassembly not complete - some fragments
are missing */
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
}
}
}
} else { /* MIDDLE fragment(s) */
if ( ( ! pinfo - > fd - > flags . visited ) & & frame ) {
guint32 tot_len ;
tot_len = fragment_get_tot_len ( pinfo , frame ,
dcerpc_co_reassemble_table ) ;
fragment_add ( tvb , offset , pinfo , frame ,
dcerpc_co_reassemble_table ,
tot_len - alloc_hint ,
length ,
TRUE ) ;
}
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
}
}
}
pinfo - > fragmented = save_fragmented ;
}
2001-04-19 23:39:27 +00:00
static void
dissect_dcerpc_cn_rqst ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * dcerpc_tree ,
2001-07-11 01:25:45 +00:00
proto_tree * tree , e_dce_cn_common_hdr_t * hdr )
2001-04-19 23:39:27 +00:00
{
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conversation_t * conv ;
2001-04-19 23:39:27 +00:00
guint16 ctx_id ;
guint16 opnum ;
e_uuid_t obj_id ;
2001-09-28 22:43:57 +00:00
int auth_sz = 0 ;
2002-03-21 09:35:52 +00:00
int auth_level ;
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int offset = 16 ;
2002-05-24 11:51:14 +00:00
guint32 alloc_hint ;
2002-07-25 21:30:58 +00:00
int length ;
2001-04-19 23:39:27 +00:00
2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
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hf_dcerpc_cn_alloc_hint , & alloc_hint ) ;
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2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_ctx_id , & ctx_id ) ;
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2001-07-11 01:25:45 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_opnum , & opnum ) ;
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2001-12-10 00:26:21 +00:00
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
2002-06-19 08:34:38 +00:00
col_append_fstr ( pinfo - > cinfo , COL_INFO , " opnum: %u ctx_id: %u " ,
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
opnum , ctx_id ) ;
}
2002-06-17 00:04:49 +00:00
if ( hdr - > flags & PFC_OBJECT_UUID ) {
2001-04-19 23:39:27 +00:00
dcerpc_tvb_get_uuid ( tvb , offset , hdr - > drep , & obj_id ) ;
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if ( dcerpc_tree ) {
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proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_obj_id , tvb ,
offset , 16 , " HMMM " ,
" Object UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
obj_id . Data1 , obj_id . Data2 , obj_id . Data3 ,
obj_id . Data4 [ 0 ] ,
obj_id . Data4 [ 1 ] ,
obj_id . Data4 [ 2 ] ,
obj_id . Data4 [ 3 ] ,
obj_id . Data4 [ 4 ] ,
obj_id . Data4 [ 5 ] ,
obj_id . Data4 [ 6 ] ,
obj_id . Data4 [ 7 ] ) ;
2001-07-11 01:25:45 +00:00
}
offset + = 16 ;
}
2002-03-21 09:35:52 +00:00
/*
* XXX - what if this was set when the connection was set up ,
* and we just have a security context ?
*/
auth_sz = dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , hdr ,
& auth_level ) ;
2001-09-28 22:43:57 +00:00
2001-07-11 01:25:45 +00:00
conv = find_conversation ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
pinfo - > srcport , pinfo - > destport , 0 ) ;
if ( ! conv ) {
} else {
2002-01-23 05:38:32 +00:00
dcerpc_call_value * value ;
2001-07-11 01:25:45 +00:00
2002-01-23 05:38:32 +00:00
/* !!! we can NOT check flags.visited here since this will interact
badly with when SMB handles ( i . e . calls the subdissector )
and desegmented pdu ' s .
Instead we check if this pdu is already in the matched table or not
*/
if ( ! g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ) {
dcerpc_bind_key bind_key ;
dcerpc_bind_value * bind_value ;
bind_key . conv = conv ;
bind_key . ctx_id = ctx_id ;
bind_key . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
if ( ( bind_value = g_hash_table_lookup ( dcerpc_binds , & bind_key ) ) ) {
dcerpc_call_key * call_key ;
dcerpc_call_value * call_value ;
/* We found the binding so just add the call
to both the call table and the matched table
*/
call_key = g_mem_chunk_alloc ( dcerpc_call_key_chunk ) ;
call_key - > conv = conv ;
call_key - > call_id = hdr - > call_id ;
call_key - > smb_fid = get_smb_fid ( pinfo - > private_data ) ;
/* if there is already a matching call in the table
remove it so it is replaced with the new one */
if ( g_hash_table_lookup ( dcerpc_calls , call_key ) ) {
g_hash_table_remove ( dcerpc_calls , call_key ) ;
}
call_value = g_mem_chunk_alloc ( dcerpc_call_value_chunk ) ;
call_value - > uuid = bind_value - > uuid ;
call_value - > ver = bind_value - > ver ;
call_value - > opnum = opnum ;
call_value - > req_frame = pinfo - > fd - > num ;
2002-04-22 09:43:03 +00:00
call_value - > rep_frame = 0 ;
2002-01-25 08:35:59 +00:00
call_value - > max_ptr = 0 ;
2002-01-23 05:38:32 +00:00
call_value - > private_data = NULL ;
g_hash_table_insert ( dcerpc_calls , call_key , call_value ) ;
2002-08-28 21:04:11 +00:00
g_hash_table_insert ( dcerpc_matched , ( void * ) pinfo - > fd - > num , call_value ) ;
2002-01-23 05:38:32 +00:00
}
}
value = g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ;
2001-07-11 01:25:45 +00:00
if ( value ) {
2002-06-18 06:11:42 +00:00
dcerpc_info di ;
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/* handoff this call */
2002-01-03 20:42:41 +00:00
di . conv = conv ;
di . call_id = hdr - > call_id ;
2002-01-23 05:38:32 +00:00
di . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
2002-01-25 08:35:59 +00:00
di . request = TRUE ;
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di . call_data = value ;
2002-04-22 09:43:03 +00:00
if ( value - > rep_frame ! = 0 ) {
2002-08-28 21:04:11 +00:00
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_response_in ,
2002-01-23 05:38:32 +00:00
tvb , 0 , 0 , value - > rep_frame ) ;
}
2002-06-24 09:23:39 +00:00
dissect_dcerpc_cn_stub ( tvb , offset , pinfo , dcerpc_tree , tree ,
hdr , & di , auth_sz , auth_level , alloc_hint ,
value - > req_frame ) ;
2002-07-25 21:30:58 +00:00
} else {
length = tvb_length_remaining ( tvb , offset ) ;
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Stub data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
2002-06-24 09:23:39 +00:00
}
2001-07-11 01:25:45 +00:00
}
}
static void
dissect_dcerpc_cn_resp ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * dcerpc_tree ,
proto_tree * tree , e_dce_cn_common_hdr_t * hdr )
{
2002-01-23 05:38:32 +00:00
dcerpc_call_value * value = NULL ;
2001-07-11 01:25:45 +00:00
conversation_t * conv ;
guint16 ctx_id ;
2001-09-28 22:43:57 +00:00
int auth_sz = 0 ;
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int offset = 16 ;
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int auth_level ;
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guint32 alloc_hint ;
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int length ;
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offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
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hf_dcerpc_cn_alloc_hint , & alloc_hint ) ;
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offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_ctx_id , & ctx_id ) ;
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if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
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col_append_fstr ( pinfo - > cinfo , COL_INFO , " ctx_id: %u " , ctx_id ) ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
}
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offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_cancel_count , NULL ) ;
/* padding */
offset + + ;
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/*
* XXX - what if this was set when the connection was set up ,
* and we just have a security context ?
*/
auth_sz = dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , hdr ,
& auth_level ) ;
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2001-07-11 01:25:45 +00:00
conv = find_conversation ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
pinfo - > srcport , pinfo - > destport , 0 ) ;
if ( ! conv ) {
/* no point in creating one here, really */
} else {
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/* !!! we can NOT check flags.visited here since this will interact
badly with when SMB handles ( i . e . calls the subdissector )
and desegmented pdu ' s .
Instead we check if this pdu is already in the matched table or not
*/
if ( ! g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ) {
dcerpc_call_key call_key ;
dcerpc_call_value * call_value ;
call_key . conv = conv ;
call_key . call_id = hdr - > call_id ;
call_key . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
if ( ( call_value = g_hash_table_lookup ( dcerpc_calls , & call_key ) ) ) {
g_hash_table_insert ( dcerpc_matched , ( void * ) pinfo - > fd - > num , call_value ) ;
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if ( call_value - > rep_frame = = 0 ) {
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call_value - > rep_frame = pinfo - > fd - > num ;
}
}
}
value = g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
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if ( value ) {
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dcerpc_info di ;
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
/* handoff this call */
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di . conv = conv ;
di . call_id = hdr - > call_id ;
di . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
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di . request = FALSE ;
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di . call_data = value ;
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_opnum , tvb , 0 , 0 , value - > opnum ) ;
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if ( value - > req_frame ! = 0 ) {
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_request_in ,
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tvb , 0 , 0 , value - > req_frame ) ;
}
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dissect_dcerpc_cn_stub ( tvb , offset , pinfo , dcerpc_tree , tree ,
hdr , & di , auth_sz , auth_level , alloc_hint ,
value - > rep_frame ) ;
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} else {
length = tvb_length_remaining ( tvb , offset ) ;
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Stub data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
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}
}
static void
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dissect_dcerpc_cn_fault ( tvbuff_t * tvb , packet_info * pinfo ,
proto_tree * dcerpc_tree , e_dce_cn_common_hdr_t * hdr )
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{
dcerpc_call_value * value = NULL ;
conversation_t * conv ;
guint16 ctx_id ;
guint32 status ;
int auth_sz = 0 ;
int offset = 16 ;
int auth_level ;
guint32 alloc_hint ;
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_alloc_hint , & alloc_hint ) ;
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_ctx_id , & ctx_id ) ;
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_cancel_count , NULL ) ;
/* padding */
offset + + ;
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree , hdr - > drep ,
hf_dcerpc_cn_status , & status ) ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" ctx_id: %u status: %s " , ctx_id ,
val_to_str ( status , reject_status_vals ,
" Unknown (0x%08x) " ) ) ;
}
/* padding */
offset + = 4 ;
/*
* XXX - what if this was set when the connection was set up ,
* and we just have a security context ?
*/
auth_sz = dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , hdr ,
& auth_level ) ;
conv = find_conversation ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
pinfo - > srcport , pinfo - > destport , 0 ) ;
if ( ! conv ) {
/* no point in creating one here, really */
} else {
/* !!! we can NOT check flags.visited here since this will interact
badly with when SMB handles ( i . e . calls the subdissector )
and desegmented pdu ' s .
Instead we check if this pdu is already in the matched table or not
*/
if ( ! g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ) {
dcerpc_call_key call_key ;
dcerpc_call_value * call_value ;
call_key . conv = conv ;
call_key . call_id = hdr - > call_id ;
call_key . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
if ( ( call_value = g_hash_table_lookup ( dcerpc_calls , & call_key ) ) ) {
g_hash_table_insert ( dcerpc_matched , ( void * ) pinfo - > fd - > num , call_value ) ;
if ( call_value - > rep_frame = = 0 ) {
call_value - > rep_frame = pinfo - > fd - > num ;
}
}
}
value = g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ;
if ( value ) {
int length , reported_length , stub_length ;
dcerpc_info di ;
/* handoff this call */
di . conv = conv ;
di . call_id = hdr - > call_id ;
di . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
di . request = FALSE ;
di . call_data = value ;
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_opnum , tvb , 0 , 0 , value - > opnum ) ;
if ( value - > req_frame ! = 0 ) {
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_request_in ,
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tvb , 0 , 0 , value - > req_frame ) ;
}
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length = tvb_length_remaining ( tvb , offset ) ;
reported_length = tvb_reported_length_remaining ( tvb , offset ) ;
stub_length = hdr - > frag_len - offset - auth_sz ;
if ( length > stub_length )
length = stub_length ;
if ( reported_length > stub_length )
reported_length = stub_length ;
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/* If we don't have reassembly enabled, or this packet contains
the entire PDU , or if this is a short frame ( or a frame
not reassembled at a lower layer ) that doesn ' t include all
the data in the fragment , just call the handoff directly if
this is the first fragment or the PDU isn ' t fragmented . */
if ( ( ! dcerpc_reassemble ) | | PFC_NOT_FRAGMENTED ( hdr ) | |
stub_length > length ) {
if ( hdr - > flags & PFC_FIRST_FRAG ) {
/* First fragment, possibly the only fragment */
/*
* XXX - should there be a third routine for each
* function in an RPC subdissector , to handle
* fault responses ? The DCE RPC 1.1 spec says
* three ' s " stub data " here , which I infer means
* that it ' s protocol - specific and call - specific .
*
* It should probably get passed the status code
* as well , as that might be protocol - specific .
*/
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fault stub data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
} else {
/* PDU is fragmented and this isn't the first fragment */
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
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}
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if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fragment data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
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}
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} else {
/* Reassembly is enabled, the PDU is fragmented, and
we have all the data in the fragment ; the first two
of those mean we should attempt reassembly , and the
third means we can attempt reassembly . */
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fragment data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
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if ( hdr - > flags & PFC_FIRST_FRAG ) { /* FIRST fragment */
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if ( ( ! pinfo - > fd - > flags . visited ) & & value - > rep_frame ) {
fragment_add ( tvb , offset , pinfo , value - > rep_frame ,
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dcerpc_co_reassemble_table ,
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0 ,
length ,
TRUE ) ;
fragment_set_tot_len ( pinfo , value - > rep_frame ,
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dcerpc_co_reassemble_table , alloc_hint ) ;
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}
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
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col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
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}
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} else if ( hdr - > flags & PFC_LAST_FRAG ) { /* LAST fragment */
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if ( value - > rep_frame ) {
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fragment_data * fd_head ;
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guint32 tot_len ;
2002-06-17 01:11:00 +00:00
2002-05-24 11:51:14 +00:00
tot_len = fragment_get_tot_len ( pinfo , value - > rep_frame ,
2002-06-17 01:11:00 +00:00
dcerpc_co_reassemble_table ) ;
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fd_head = fragment_add ( tvb , offset , pinfo ,
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value - > rep_frame ,
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dcerpc_co_reassemble_table ,
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tot_len - alloc_hint ,
length ,
TRUE ) ;
2002-06-17 01:11:00 +00:00
if ( fd_head ) {
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/* We completed reassembly */
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tvbuff_t * next_tvb ;
2002-06-17 01:11:00 +00:00
next_tvb = tvb_new_real_data ( fd_head - > data , fd_head - > datalen , fd_head - > datalen ) ;
2002-05-24 11:51:14 +00:00
tvb_set_child_real_data_tvbuff ( tvb , next_tvb ) ;
2002-06-04 07:03:57 +00:00
add_new_data_source ( pinfo , next_tvb , " Reassembled DCE/RPC " ) ;
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show_fragment_tree ( fd_head , & dcerpc_frag_items ,
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dcerpc_tree , pinfo , next_tvb ) ;
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/*
* XXX - should there be a third routine for each
* function in an RPC subdissector , to handle
* fault responses ? The DCE RPC 1.1 spec says
* three ' s " stub data " here , which I infer means
* that it ' s protocol - specific and call - specific .
*
* It should probably get passed the status code
* as well , as that might be protocol - specific .
*/
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fault stub data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
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} else {
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/* Reassembly not complete - some fragments
are missing */
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if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
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col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
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}
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}
}
} else { /* MIDDLE fragment(s) */
if ( ( ! pinfo - > fd - > flags . visited ) & & value - > rep_frame ) {
guint32 tot_len ;
tot_len = fragment_get_tot_len ( pinfo , value - > rep_frame ,
2002-06-17 01:11:00 +00:00
dcerpc_co_reassemble_table ) ;
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fragment_add ( tvb , offset , pinfo , value - > rep_frame ,
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dcerpc_co_reassemble_table ,
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tot_len - alloc_hint ,
length ,
TRUE ) ;
}
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
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col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" [DCE/RPC fragment] " ) ;
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}
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}
}
2001-04-19 23:39:27 +00:00
}
}
}
2001-03-18 02:13:33 +00:00
/*
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* DCERPC dissector for connection oriented calls
2001-03-18 02:13:33 +00:00
*/
2001-11-27 09:27:29 +00:00
static int
dissect_dcerpc_cn ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * tree , gboolean can_desegment )
2001-03-18 02:13:33 +00:00
{
2001-09-28 22:43:57 +00:00
static char nulls [ 4 ] = { 0 } ;
2001-11-27 09:27:29 +00:00
int start_offset ;
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int padding = 0 ;
2001-03-18 02:13:33 +00:00
proto_item * ti = NULL ;
proto_item * tf = NULL ;
proto_tree * dcerpc_tree = NULL ;
proto_tree * cn_flags_tree = NULL ;
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proto_tree * drep_tree = NULL ;
2001-04-19 23:39:27 +00:00
e_dce_cn_common_hdr_t hdr ;
2001-03-18 02:13:33 +00:00
2001-09-28 22:43:57 +00:00
/*
* when done over nbt , dcerpc requests are padded with 4 bytes of null
* data for some reason .
2001-11-27 11:01:35 +00:00
*
* XXX - if that ' s always the case , the right way to do this would
* be to have a " dissect_dcerpc_cn_nb " routine which strips off
* the 4 bytes of null padding , and make that the dissector
* used for " netbios " .
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*/
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if ( tvb_bytes_exist ( tvb , offset , 4 ) & &
tvb_memeql ( tvb , offset , nulls , 4 ) = = 0 ) {
/*
* Skip the padding .
*/
offset + = 4 ;
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padding + = 4 ;
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}
2001-11-27 11:01:35 +00:00
/*
* Check if this looks like a C / O DCERPC call
*/
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if ( ! tvb_bytes_exist ( tvb , offset , sizeof ( hdr ) ) ) {
return - 1 ;
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}
2001-11-27 09:27:29 +00:00
start_offset = offset ;
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hdr . rpc_ver = tvb_get_guint8 ( tvb , offset + + ) ;
if ( hdr . rpc_ver ! = 5 )
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return - 1 ;
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hdr . rpc_ver_minor = tvb_get_guint8 ( tvb , offset + + ) ;
if ( hdr . rpc_ver_minor ! = 0 & & hdr . rpc_ver_minor ! = 1 )
2001-11-27 09:27:29 +00:00
return - 1 ;
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hdr . ptype = tvb_get_guint8 ( tvb , offset + + ) ;
if ( hdr . ptype > 19 )
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return - 1 ;
2001-03-18 02:13:33 +00:00
2001-12-10 00:26:21 +00:00
if ( check_col ( pinfo - > cinfo , COL_PROTOCOL ) )
col_set_str ( pinfo - > cinfo , COL_PROTOCOL , " DCERPC " ) ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) )
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col_add_str ( pinfo - > cinfo , COL_INFO , pckt_vals [ hdr . ptype ] . strptr ) ;
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hdr . flags = tvb_get_guint8 ( tvb , offset + + ) ;
tvb_memcpy ( tvb , ( guint8 * ) hdr . drep , offset , sizeof ( hdr . drep ) ) ;
offset + = sizeof ( hdr . drep ) ;
hdr . frag_len = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . auth_len = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . call_id = dcerpc_tvb_get_ntohl ( tvb , offset , hdr . drep ) ;
offset + = 4 ;
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offset = start_offset ;
if ( can_desegment & & pinfo - > can_desegment
& & hdr . frag_len > tvb_length_remaining ( tvb , offset ) ) {
pinfo - > desegment_offset = offset ;
pinfo - > desegment_len = hdr . frag_len - tvb_length_remaining ( tvb , offset ) ;
return 0 ; /* desegmentation required */
}
2002-06-19 08:34:38 +00:00
if ( check_col ( pinfo - > cinfo , COL_INFO ) )
col_append_fstr ( pinfo - > cinfo , COL_INFO , " : call_id: %u " , hdr . call_id ) ;
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if ( tree ) {
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ti = proto_tree_add_item ( tree , proto_dcerpc , tvb , offset , hdr . frag_len , FALSE ) ;
2001-03-18 02:13:33 +00:00
if ( ti ) {
dcerpc_tree = proto_item_add_subtree ( ti , ett_dcerpc ) ;
}
2001-04-19 23:39:27 +00:00
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_ver , tvb , offset + + , 1 , hdr . rpc_ver ) ;
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_ver_minor , tvb , offset + + , 1 , hdr . rpc_ver_minor ) ;
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_packet_type , tvb , offset + + , 1 , hdr . ptype ) ;
tf = proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_cn_flags , tvb , offset , 1 , hdr . flags ) ;
2001-03-18 02:13:33 +00:00
cn_flags_tree = proto_item_add_subtree ( tf , ett_dcerpc_cn_flags ) ;
if ( cn_flags_tree ) {
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proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_object , tvb , offset , 1 , hdr . flags ) ;
2002-07-10 02:59:38 +00:00
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_maybe , tvb , offset , 1 , hdr . flags ) ;
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_dne , tvb , offset , 1 , hdr . flags ) ;
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_mpx , tvb , offset , 1 , hdr . flags ) ;
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_reserved , tvb , offset , 1 , hdr . flags ) ;
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_cancel_pending , tvb , offset , 1 , hdr . flags ) ;
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_last_frag , tvb , offset , 1 , hdr . flags ) ;
proto_tree_add_boolean ( cn_flags_tree , hf_dcerpc_cn_flags_first_frag , tvb , offset , 1 , hdr . flags ) ;
2001-03-18 02:13:33 +00:00
}
offset + + ;
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tf = proto_tree_add_bytes ( dcerpc_tree , hf_dcerpc_drep , tvb , offset , 4 , hdr . drep ) ;
drep_tree = proto_item_add_subtree ( tf , ett_dcerpc_drep ) ;
if ( drep_tree ) {
proto_tree_add_uint ( drep_tree , hf_dcerpc_drep_byteorder , tvb , offset , 1 , hdr . drep [ 0 ] > > 4 ) ;
proto_tree_add_uint ( drep_tree , hf_dcerpc_drep_character , tvb , offset , 1 , hdr . drep [ 0 ] & 0x0f ) ;
proto_tree_add_uint ( drep_tree , hf_dcerpc_drep_fp , tvb , offset + 1 , 1 , hdr . drep [ 1 ] ) ;
2001-09-30 13:48:20 +00:00
}
2001-04-19 23:39:27 +00:00
offset + = sizeof ( hdr . drep ) ;
2001-03-18 02:13:33 +00:00
2001-04-19 23:39:27 +00:00
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_cn_frag_len , tvb , offset , 2 , hdr . frag_len ) ;
2001-03-18 02:13:33 +00:00
offset + = 2 ;
2001-04-19 23:39:27 +00:00
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_cn_auth_len , tvb , offset , 2 , hdr . auth_len ) ;
2001-03-18 02:13:33 +00:00
offset + = 2 ;
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_cn_call_id , tvb , offset , 4 , hdr . call_id ) ;
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offset + = 4 ;
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}
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2001-04-19 23:39:27 +00:00
/*
* Packet type specific stuff is next .
*/
switch ( hdr . ptype ) {
case PDU_BIND :
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case PDU_ALTER :
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dissect_dcerpc_cn_bind ( tvb , pinfo , dcerpc_tree , & hdr ) ;
break ;
case PDU_BIND_ACK :
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case PDU_ALTER_ACK :
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dissect_dcerpc_cn_bind_ack ( tvb , pinfo , dcerpc_tree , & hdr ) ;
break ;
2001-03-18 02:13:33 +00:00
2001-04-19 23:39:27 +00:00
case PDU_REQ :
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dissect_dcerpc_cn_rqst ( tvb , pinfo , dcerpc_tree , tree , & hdr ) ;
break ;
case PDU_RESP :
dissect_dcerpc_cn_resp ( tvb , pinfo , dcerpc_tree , tree , & hdr ) ;
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break ;
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case PDU_FAULT :
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dissect_dcerpc_cn_fault ( tvb , pinfo , dcerpc_tree , & hdr ) ;
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break ;
case PDU_BIND_NAK :
dissect_dcerpc_cn_bind_nak ( tvb , pinfo , dcerpc_tree , & hdr ) ;
break ;
case PDU_CO_CANCEL :
case PDU_ORPHANED :
/*
* Nothing after the common header other than an authentication
* verifier .
*/
dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , & hdr , NULL ) ;
break ;
case PDU_SHUTDOWN :
/*
* Nothing after the common header , not even an authentication
* verifier .
*/
break ;
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default :
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/* might as well dissect the auth info */
2002-03-21 09:35:52 +00:00
dissect_dcerpc_cn_auth ( tvb , pinfo , dcerpc_tree , & hdr , NULL ) ;
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break ;
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}
2001-11-27 11:01:35 +00:00
return hdr . frag_len + padding ;
2001-11-27 09:27:29 +00:00
}
/*
* DCERPC dissector for connection oriented calls over packet - oriented
* transports
*/
static gboolean
dissect_dcerpc_cn_pk ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree )
{
/*
* Only one PDU per transport packet , and only one transport
* packet per PDU .
*/
if ( dissect_dcerpc_cn ( tvb , 0 , pinfo , tree , FALSE ) = = - 1 ) {
/*
* It wasn ' t a DCERPC PDU .
*/
return FALSE ;
} else {
/*
* It was .
*/
return TRUE ;
}
}
/*
* DCERPC dissector for connection oriented calls over byte - stream
* transports
*/
static gboolean
dissect_dcerpc_cn_bs ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree )
{
int offset = 0 ;
int pdu_len ;
gboolean ret = FALSE ;
/*
* There may be multiple PDUs per transport packet ; keep
* processing them .
*/
while ( tvb_reported_length_remaining ( tvb , offset ) ! = 0 ) {
pdu_len = dissect_dcerpc_cn ( tvb , offset , pinfo , tree ,
dcerpc_cn_desegment ) ;
if ( pdu_len = = - 1 ) {
/*
* Not a DCERPC PDU .
*/
break ;
}
/*
* Well , we ' ve seen at least one DCERPC PDU .
*/
ret = TRUE ;
if ( pdu_len = = 0 ) {
/*
* Desegmentation required - bail now .
*/
break ;
}
/*
* Step to the next PDU .
*/
offset + = pdu_len ;
}
return ret ;
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}
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static void
2002-06-18 05:06:44 +00:00
dissect_dcerpc_dg_auth ( tvbuff_t * tvb , int offset , proto_tree * dcerpc_tree ,
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e_dce_dg_common_hdr_t * hdr , int * auth_level_p )
{
2002-09-09 22:11:33 +00:00
proto_item * ti = NULL ;
proto_tree * auth_tree = NULL ;
guint8 protection_level ;
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/*
* Initially set " *auth_level_p " to - 1 to indicate that we haven ' t
* yet seen any authentication level information .
*/
if ( auth_level_p ! = NULL )
* auth_level_p = - 1 ;
/*
* The authentication information is at the * end * of the PDU ; in
* request and response PDUs , the request and response stub data
* come before it .
*
* If the full packet is here , and there ' s data past the end of the
* packet body , then dissect the auth info .
*/
2002-06-18 05:06:44 +00:00
offset + = hdr - > frag_len ;
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if ( tvb_length_remaining ( tvb , offset ) > 0 ) {
switch ( hdr - > auth_proto ) {
case DCE_C_RPC_AUTHN_PROTOCOL_KRB5 :
ti = proto_tree_add_text ( dcerpc_tree , tvb , offset , - 1 , " Kerberos authentication verifier " ) ;
auth_tree = proto_item_add_subtree ( ti , ett_decrpc_krb5_auth_verf ) ;
protection_level = tvb_get_guint8 ( tvb , offset ) ;
if ( auth_level_p ! = NULL )
* auth_level_p = protection_level ;
proto_tree_add_uint ( auth_tree , hf_dcerpc_krb5_av_prot_level , tvb , offset , 1 , protection_level ) ;
offset + + ;
proto_tree_add_item ( auth_tree , hf_dcerpc_krb5_av_key_vers_num , tvb , offset , 1 , FALSE ) ;
offset + + ;
if ( protection_level = = DCE_C_AUTHN_LEVEL_PKT_PRIVACY )
offset + = 6 ; /* 6 bytes of padding */
else
offset + = 2 ; /* 6 bytes of padding */
proto_tree_add_item ( auth_tree , hf_dcerpc_krb5_av_key_auth_verifier , tvb , offset , 16 , FALSE ) ;
offset + = 16 ;
break ;
default :
proto_tree_add_text ( dcerpc_tree , tvb , offset , - 1 , " Authentication verifier " ) ;
break ;
}
}
2002-03-22 09:44:58 +00:00
}
2002-06-19 08:34:38 +00:00
static void
dissect_dcerpc_dg_cancel_ack ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree ,
e_dce_dg_common_hdr_t * hdr )
{
guint32 version ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_cancel_vers ,
& version ) ;
switch ( version ) {
case 0 :
/* The only version we know about */
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_dg_cancel_id ,
NULL ) ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree ,
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hdr - > drep , hf_dcerpc_dg_server_accepting_cancels ,
NULL ) ;
break ;
}
}
static void
dissect_dcerpc_dg_cancel ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree ,
e_dce_dg_common_hdr_t * hdr )
{
guint32 version ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_cancel_vers ,
& version ) ;
switch ( version ) {
case 0 :
/* The only version we know about */
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_cancel_id ,
NULL ) ;
/* XXX - are NDR booleans 32 bits? */
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_server_accepting_cancels ,
NULL ) ;
break ;
}
}
static void
dissect_dcerpc_dg_fack ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree ,
e_dce_dg_common_hdr_t * hdr )
{
guint8 version ;
guint16 serial_num ;
guint16 selack_len ;
guint i ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint8 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_vers ,
& version ) ;
/* padding */
offset + + ;
switch ( version ) {
case 0 : /* The only version documented in the DCE RPC 1.1 spec */
case 1 : /* This appears to be the same */
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_window_size ,
NULL ) ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_max_tsdu ,
NULL ) ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_max_frag_size ,
NULL ) ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_serial_num ,
& serial_num ) ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO , " serial_num: %u " ,
serial_num ) ;
}
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint16 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_selack_len ,
& selack_len ) ;
for ( i = 0 ; i < selack_len ; i + + ) {
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_fack_selack ,
NULL ) ;
}
break ;
}
}
static void
dissect_dcerpc_dg_reject_fault ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree ,
e_dce_dg_common_hdr_t * hdr )
{
guint32 status ;
2002-08-28 21:04:11 +00:00
offset = dissect_dcerpc_uint32 ( tvb , offset , pinfo , dcerpc_tree ,
2002-06-19 08:34:38 +00:00
hdr - > drep , hf_dcerpc_dg_status ,
& status ) ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO ,
" : status: %s " ,
val_to_str ( status , reject_status_vals , " Unknown (0x%08x) " ) ) ;
}
}
static void
2002-06-24 09:23:39 +00:00
dissect_dcerpc_dg_stub ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
2002-06-19 08:34:38 +00:00
proto_tree * dcerpc_tree , proto_tree * tree ,
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e_dce_dg_common_hdr_t * hdr , dcerpc_info * di )
2002-06-19 08:34:38 +00:00
{
int length , reported_length , stub_length ;
gboolean save_fragmented ;
fragment_data * fd_head ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
2002-06-24 09:23:39 +00:00
col_append_fstr ( pinfo - > cinfo , COL_INFO , " opnum: %u " ,
di - > call_data - > opnum ) ;
2002-06-19 08:34:38 +00:00
}
length = tvb_length_remaining ( tvb , offset ) ;
reported_length = tvb_reported_length_remaining ( tvb , offset ) ;
stub_length = hdr - > frag_len ;
if ( length > stub_length )
length = stub_length ;
if ( reported_length > stub_length )
reported_length = stub_length ;
save_fragmented = pinfo - > fragmented ;
/* If we don't have reassembly enabled, or this packet contains
the entire PDU , or if this is a short frame ( or a frame
not reassembled at a lower layer ) that doesn ' t include all
the data in the fragment , just call the handoff directly if
this is the first fragment or the PDU isn ' t fragmented . */
if ( ( ! dcerpc_reassemble ) | | ! ( hdr - > flags1 & PFCL1_FRAG ) | |
stub_length > length ) {
if ( hdr - > frag_num = = 0 ) {
/* First fragment, possibly the only fragment */
/*
* XXX - authentication level ?
*/
2002-06-24 09:23:39 +00:00
pinfo - > fragmented = ( hdr - > flags1 & PFCL1_FRAG ) ;
2002-08-28 21:04:11 +00:00
dcerpc_try_handoff ( pinfo , tree , dcerpc_tree ,
tvb_new_subset ( tvb , offset , length ,
2002-06-19 08:34:38 +00:00
reported_length ) ,
2002-06-24 09:23:39 +00:00
0 , hdr - > drep , di , 0 ) ;
2002-06-19 08:34:38 +00:00
} else {
/* PDU is fragmented and this isn't the first fragment */
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO , " [DCE/RPC fragment] " ) ;
}
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
2002-06-24 09:23:39 +00:00
" Fragment data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
2002-06-19 08:34:38 +00:00
}
2002-06-24 09:23:39 +00:00
}
2002-06-19 08:34:38 +00:00
} else {
/* Reassembly is enabled, the PDU is fragmented, and
we have all the data in the fragment ; the first two
of those mean we should attempt reassembly , and the
third means we can attempt reassembly . */
if ( dcerpc_tree ) {
if ( length > 0 ) {
proto_tree_add_text ( dcerpc_tree , tvb , offset , length ,
" Fragment data (%d byte%s) " , length ,
plurality ( length , " " , " s " ) ) ;
}
}
fd_head = fragment_add_seq ( tvb , offset , pinfo ,
hdr - > seqnum , dcerpc_cl_reassemble_table ,
hdr - > frag_num , length , ! ( hdr - > flags1 & PFCL1_LASTFRAG ) ) ;
if ( fd_head ! = NULL ) {
/* We completed reassembly */
tvbuff_t * next_tvb ;
next_tvb = tvb_new_real_data ( fd_head - > data , fd_head - > len , fd_head - > len ) ;
tvb_set_child_real_data_tvbuff ( tvb , next_tvb ) ;
add_new_data_source ( pinfo , next_tvb , " Reassembled DCE/RPC " ) ;
show_fragment_seq_tree ( fd_head , & dcerpc_frag_items ,
dcerpc_tree , pinfo , next_tvb ) ;
/*
* XXX - authentication level ?
*/
pinfo - > fragmented = FALSE ;
dcerpc_try_handoff ( pinfo , tree , dcerpc_tree , next_tvb ,
2002-06-24 09:23:39 +00:00
0 , hdr - > drep , di , 0 ) ;
2002-06-19 08:34:38 +00:00
} else {
/* Reassembly isn't completed yet */
if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO , " [DCE/RPC fragment] " ) ;
}
}
}
pinfo - > fragmented = save_fragmented ;
}
2002-06-24 09:23:39 +00:00
static void
dissect_dcerpc_dg_rqst ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree , proto_tree * tree ,
e_dce_dg_common_hdr_t * hdr , conversation_t * conv )
{
dcerpc_info di ;
dcerpc_call_value * value , v ;
if ( ! ( pinfo - > fd - > flags . visited ) ) {
dcerpc_call_value * call_value ;
dcerpc_call_key * call_key ;
call_key = g_mem_chunk_alloc ( dcerpc_call_key_chunk ) ;
call_key - > conv = conv ;
call_key - > call_id = hdr - > seqnum ;
call_key - > smb_fid = get_smb_fid ( pinfo - > private_data ) ;
call_value = g_mem_chunk_alloc ( dcerpc_call_value_chunk ) ;
call_value - > uuid = hdr - > if_id ;
call_value - > ver = hdr - > if_ver ;
call_value - > opnum = hdr - > opnum ;
call_value - > req_frame = pinfo - > fd - > num ;
call_value - > rep_frame = 0 ;
call_value - > max_ptr = 0 ;
call_value - > private_data = NULL ;
g_hash_table_insert ( dcerpc_calls , call_key , call_value ) ;
2002-08-28 21:04:11 +00:00
g_hash_table_insert ( dcerpc_matched , ( void * ) pinfo - > fd - > num , call_value ) ;
2002-06-24 09:23:39 +00:00
}
value = g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ;
if ( ! value ) {
v . uuid = hdr - > if_id ;
v . ver = hdr - > if_ver ;
v . opnum = hdr - > opnum ;
v . req_frame = pinfo - > fd - > num ;
v . rep_frame = 0 ;
v . max_ptr = 0 ;
v . private_data = NULL ;
value = & v ;
}
di . conv = conv ;
di . call_id = hdr - > seqnum ;
di . smb_fid = - 1 ;
di . request = TRUE ;
di . call_data = value ;
dissect_dcerpc_dg_stub ( tvb , offset , pinfo , dcerpc_tree , tree , hdr , & di ) ;
}
2002-06-19 08:34:38 +00:00
static void
dissect_dcerpc_dg_resp ( tvbuff_t * tvb , int offset , packet_info * pinfo ,
proto_tree * dcerpc_tree , proto_tree * tree ,
e_dce_dg_common_hdr_t * hdr , conversation_t * conv )
{
dcerpc_info di ;
dcerpc_call_value * value , v ;
if ( ! ( pinfo - > fd - > flags . visited ) ) {
dcerpc_call_value * call_value ;
dcerpc_call_key call_key ;
call_key . conv = conv ;
call_key . call_id = hdr - > seqnum ;
call_key . smb_fid = get_smb_fid ( pinfo - > private_data ) ;
if ( ( call_value = g_hash_table_lookup ( dcerpc_calls , & call_key ) ) ) {
g_hash_table_insert ( dcerpc_matched , ( void * ) pinfo - > fd - > num , call_value ) ;
if ( call_value - > rep_frame = = 0 ) {
call_value - > rep_frame = pinfo - > fd - > num ;
}
}
}
value = g_hash_table_lookup ( dcerpc_matched , ( void * ) pinfo - > fd - > num ) ;
if ( ! value ) {
v . uuid = hdr - > if_id ;
v . ver = hdr - > if_ver ;
v . opnum = hdr - > opnum ;
v . req_frame = 0 ;
v . rep_frame = pinfo - > fd - > num ;
v . private_data = NULL ;
value = & v ;
}
di . conv = conv ;
2002-08-28 21:04:11 +00:00
di . call_id = 0 ;
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di . smb_fid = - 1 ;
di . request = FALSE ;
di . call_data = value ;
2002-06-24 09:23:39 +00:00
dissect_dcerpc_dg_stub ( tvb , offset , pinfo , dcerpc_tree , tree , hdr , & di ) ;
2002-06-19 08:34:38 +00:00
}
2001-03-18 02:13:33 +00:00
/*
2001-03-18 02:34:50 +00:00
* DCERPC dissector for connectionless calls
2001-03-18 02:13:33 +00:00
*/
static gboolean
dissect_dcerpc_dg ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree )
{
proto_item * ti = NULL ;
proto_item * tf = NULL ;
proto_tree * dcerpc_tree = NULL ;
proto_tree * dg_flags1_tree = NULL ;
proto_tree * dg_flags2_tree = NULL ;
2001-10-05 20:25:41 +00:00
proto_tree * drep_tree = NULL ;
2001-04-19 23:39:27 +00:00
e_dce_dg_common_hdr_t hdr ;
2001-03-18 02:13:33 +00:00
int offset = 0 ;
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conversation_t * conv ;
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int auth_level ;
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/*
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* Check if this looks like a CL DCERPC call . All dg packets
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* have an 80 byte header on them . Which starts with
* version ( 4 ) , pkt_type .
*/
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if ( ! tvb_bytes_exist ( tvb , 0 , sizeof ( hdr ) ) ) {
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return FALSE ;
}
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hdr . rpc_ver = tvb_get_guint8 ( tvb , offset + + ) ;
if ( hdr . rpc_ver ! = 4 )
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return FALSE ;
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hdr . ptype = tvb_get_guint8 ( tvb , offset + + ) ;
if ( hdr . ptype > 19 )
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return FALSE ;
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if ( check_col ( pinfo - > cinfo , COL_PROTOCOL ) )
col_set_str ( pinfo - > cinfo , COL_PROTOCOL , " DCERPC " ) ;
if ( check_col ( pinfo - > cinfo , COL_INFO ) )
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col_add_str ( pinfo - > cinfo , COL_INFO , pckt_vals [ hdr . ptype ] . strptr ) ;
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hdr . flags1 = tvb_get_guint8 ( tvb , offset + + ) ;
hdr . flags2 = tvb_get_guint8 ( tvb , offset + + ) ;
tvb_memcpy ( tvb , ( guint8 * ) hdr . drep , offset , sizeof ( hdr . drep ) ) ;
offset + = sizeof ( hdr . drep ) ;
hdr . serial_hi = tvb_get_guint8 ( tvb , offset + + ) ;
dcerpc_tvb_get_uuid ( tvb , offset , hdr . drep , & hdr . obj_id ) ;
offset + = 16 ;
dcerpc_tvb_get_uuid ( tvb , offset , hdr . drep , & hdr . if_id ) ;
offset + = 16 ;
dcerpc_tvb_get_uuid ( tvb , offset , hdr . drep , & hdr . act_id ) ;
offset + = 16 ;
hdr . server_boot = dcerpc_tvb_get_ntohl ( tvb , offset , hdr . drep ) ;
offset + = 4 ;
hdr . if_ver = dcerpc_tvb_get_ntohl ( tvb , offset , hdr . drep ) ;
offset + = 4 ;
hdr . seqnum = dcerpc_tvb_get_ntohl ( tvb , offset , hdr . drep ) ;
offset + = 4 ;
hdr . opnum = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . ihint = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . ahint = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . frag_len = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . frag_num = dcerpc_tvb_get_ntohs ( tvb , offset , hdr . drep ) ;
offset + = 2 ;
hdr . auth_proto = tvb_get_guint8 ( tvb , offset + + ) ;
hdr . serial_lo = tvb_get_guint8 ( tvb , offset + + ) ;
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if ( tree ) {
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ti = proto_tree_add_item ( tree , proto_dcerpc , tvb , 0 , - 1 , FALSE ) ;
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if ( ti ) {
dcerpc_tree = proto_item_add_subtree ( ti , ett_dcerpc ) ;
}
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}
offset = 0 ;
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if ( tree )
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_ver , tvb , offset , 1 , hdr . rpc_ver ) ;
offset + + ;
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if ( tree )
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_packet_type , tvb , offset , 1 , hdr . ptype ) ;
offset + + ;
if ( tree ) {
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tf = proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_flags1 , tvb , offset , 1 , hdr . flags1 ) ;
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dg_flags1_tree = proto_item_add_subtree ( tf , ett_dcerpc_dg_flags1 ) ;
if ( dg_flags1_tree ) {
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proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_rsrvd_80 , tvb , offset , 1 , hdr . flags1 ) ;
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proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_broadcast , tvb , offset , 1 , hdr . flags1 ) ;
proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_idempotent , tvb , offset , 1 , hdr . flags1 ) ;
proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_maybe , tvb , offset , 1 , hdr . flags1 ) ;
proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_nofack , tvb , offset , 1 , hdr . flags1 ) ;
proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_frag , tvb , offset , 1 , hdr . flags1 ) ;
proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_last_frag , tvb , offset , 1 , hdr . flags1 ) ;
proto_tree_add_boolean ( dg_flags1_tree , hf_dcerpc_dg_flags1_rsrvd_01 , tvb , offset , 1 , hdr . flags1 ) ;
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}
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}
offset + + ;
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if ( tree ) {
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tf = proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_flags2 , tvb , offset , 1 , hdr . flags2 ) ;
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dg_flags2_tree = proto_item_add_subtree ( tf , ett_dcerpc_dg_flags2 ) ;
if ( dg_flags2_tree ) {
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proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_80 , tvb , offset , 1 , hdr . flags2 ) ;
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proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_40 , tvb , offset , 1 , hdr . flags2 ) ;
proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_20 , tvb , offset , 1 , hdr . flags2 ) ;
proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_10 , tvb , offset , 1 , hdr . flags2 ) ;
proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_08 , tvb , offset , 1 , hdr . flags2 ) ;
proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_04 , tvb , offset , 1 , hdr . flags2 ) ;
proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_cancel_pending , tvb , offset , 1 , hdr . flags2 ) ;
proto_tree_add_boolean ( dg_flags2_tree , hf_dcerpc_dg_flags2_rsrvd_01 , tvb , offset , 1 , hdr . flags2 ) ;
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}
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}
offset + + ;
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if ( tree ) {
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tf = proto_tree_add_bytes ( dcerpc_tree , hf_dcerpc_drep , tvb , offset , sizeof ( hdr . drep ) , hdr . drep ) ;
drep_tree = proto_item_add_subtree ( tf , ett_dcerpc_drep ) ;
if ( drep_tree ) {
proto_tree_add_uint ( drep_tree , hf_dcerpc_drep_byteorder , tvb , offset , 1 , hdr . drep [ 0 ] > > 4 ) ;
proto_tree_add_uint ( drep_tree , hf_dcerpc_drep_character , tvb , offset , 1 , hdr . drep [ 0 ] & 0x0f ) ;
proto_tree_add_uint ( drep_tree , hf_dcerpc_drep_fp , tvb , offset + 1 , 1 , hdr . drep [ 1 ] ) ;
}
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}
offset + = sizeof ( hdr . drep ) ;
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if ( tree )
proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_serial_hi , tvb , offset , 1 , hdr . serial_hi ) ;
offset + + ;
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if ( tree ) {
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proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_obj_id , tvb ,
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offset , 16 , " HMMM " ,
" Object: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
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hdr . obj_id . Data1 , hdr . obj_id . Data2 , hdr . obj_id . Data3 ,
hdr . obj_id . Data4 [ 0 ] ,
hdr . obj_id . Data4 [ 1 ] ,
hdr . obj_id . Data4 [ 2 ] ,
hdr . obj_id . Data4 [ 3 ] ,
hdr . obj_id . Data4 [ 4 ] ,
hdr . obj_id . Data4 [ 5 ] ,
hdr . obj_id . Data4 [ 6 ] ,
hdr . obj_id . Data4 [ 7 ] ) ;
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}
offset + = 16 ;
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if ( tree ) {
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proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_dg_if_id , tvb ,
offset , 16 , " HMMM " ,
" Interface: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
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hdr . if_id . Data1 , hdr . if_id . Data2 , hdr . if_id . Data3 ,
hdr . if_id . Data4 [ 0 ] ,
hdr . if_id . Data4 [ 1 ] ,
hdr . if_id . Data4 [ 2 ] ,
hdr . if_id . Data4 [ 3 ] ,
hdr . if_id . Data4 [ 4 ] ,
hdr . if_id . Data4 [ 5 ] ,
hdr . if_id . Data4 [ 6 ] ,
hdr . if_id . Data4 [ 7 ] ) ;
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}
offset + = 16 ;
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if ( tree ) {
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proto_tree_add_string_format ( dcerpc_tree , hf_dcerpc_dg_act_id , tvb ,
offset , 16 , " HMMM " ,
" Activity: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x " ,
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hdr . act_id . Data1 , hdr . act_id . Data2 , hdr . act_id . Data3 ,
hdr . act_id . Data4 [ 0 ] ,
hdr . act_id . Data4 [ 1 ] ,
hdr . act_id . Data4 [ 2 ] ,
hdr . act_id . Data4 [ 3 ] ,
hdr . act_id . Data4 [ 4 ] ,
hdr . act_id . Data4 [ 5 ] ,
hdr . act_id . Data4 [ 6 ] ,
hdr . act_id . Data4 [ 7 ] ) ;
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}
offset + = 16 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_server_boot , tvb , offset , 4 , hdr . server_boot ) ;
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offset + = 4 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_if_ver , tvb , offset , 4 , hdr . if_ver ) ;
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offset + = 4 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_seqnum , tvb , offset , 4 , hdr . seqnum ) ;
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if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
col_append_fstr ( pinfo - > cinfo , COL_INFO , " : seq_num: %u " , hdr . seqnum ) ;
}
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offset + = 4 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_opnum , tvb , offset , 2 , hdr . opnum ) ;
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offset + = 2 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_ihint , tvb , offset , 2 , hdr . ihint ) ;
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offset + = 2 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_ahint , tvb , offset , 2 , hdr . ahint ) ;
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offset + = 2 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_frag_len , tvb , offset , 2 , hdr . frag_len ) ;
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offset + = 2 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_frag_num , tvb , offset , 2 , hdr . frag_num ) ;
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if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
if ( hdr . flags1 & PFCL1_FRAG ) {
/* Fragmented - put the fragment number into the Info column */
col_append_fstr ( pinfo - > cinfo , COL_INFO , " frag_num: %u " ,
hdr . frag_num ) ;
}
}
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offset + = 2 ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_auth_proto , tvb , offset , 1 , hdr . auth_proto ) ;
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offset + + ;
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if ( tree )
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proto_tree_add_uint ( dcerpc_tree , hf_dcerpc_dg_serial_lo , tvb , offset , 1 , hdr . serial_lo ) ;
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if ( check_col ( pinfo - > cinfo , COL_INFO ) ) {
if ( hdr . flags1 & PFCL1_FRAG ) {
/* Fragmented - put the serial number into the Info column */
col_append_fstr ( pinfo - > cinfo , COL_INFO , " serial_num: %u " ,
( hdr . serial_hi < < 8 ) | hdr . serial_lo ) ;
}
}
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offset + + ;
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if ( tree ) {
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/*
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* XXX - for Kerberos , we get a protection level ; if it ' s
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* DCE_C_AUTHN_LEVEL_PKT_PRIVACY , we can ' t dissect the
* stub data .
*/
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dissect_dcerpc_dg_auth ( tvb , offset , dcerpc_tree , & hdr ,
& auth_level ) ;
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}
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/*
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* keeping track of the conversation shouldn ' t really be necessary
* for connectionless packets , because everything we need to know
* to dissect is in the header for each packet . Unfortunately ,
* Microsoft ' s implementation is buggy and often puts the
* completely wrong if_id in the header . go figure . So , keep
* track of the seqnum and use that if possible . Note : that ' s not
* completely correct . It should really be done based on both the
* activity_id and seqnum . I haven ' t seen anywhere that it would
* make a difference , but for future reference . . .
*/
conv = find_conversation ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
pinfo - > srcport , pinfo - > destport , 0 ) ;
if ( ! conv ) {
conv = conversation_new ( & pinfo - > src , & pinfo - > dst , pinfo - > ptype ,
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pinfo - > srcport , pinfo - > destport , 0 ) ;
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}
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/*
* Packet type specific stuff is next .
*/
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switch ( hdr . ptype ) {
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case PDU_CANCEL_ACK :
/* Body is optional */
/* XXX - we assume "frag_len" is the length of the body */
if ( hdr . frag_len ! = 0 )
dissect_dcerpc_dg_cancel_ack ( tvb , offset , pinfo , dcerpc_tree , & hdr ) ;
break ;
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case PDU_CL_CANCEL :
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/*
* XXX - The DCE RPC 1.1 spec doesn ' t say the body is optional ,
* but in at least one capture none of the Cl_cancel PDUs had a
* body .
*/
/* XXX - we assume "frag_len" is the length of the body */
if ( hdr . frag_len ! = 0 )
dissect_dcerpc_dg_cancel ( tvb , offset , pinfo , dcerpc_tree , & hdr ) ;
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break ;
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case PDU_NOCALL :
/* Body is optional; if present, it's the same as PDU_FACK */
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/* XXX - we assume "frag_len" is the length of the body */
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if ( hdr . frag_len ! = 0 )
dissect_dcerpc_dg_fack ( tvb , offset , pinfo , dcerpc_tree , & hdr ) ;
break ;
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case PDU_FACK :
dissect_dcerpc_dg_fack ( tvb , offset , pinfo , dcerpc_tree , & hdr ) ;
break ;
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case PDU_REJECT :
case PDU_FAULT :
dissect_dcerpc_dg_reject_fault ( tvb , offset , pinfo , dcerpc_tree , & hdr ) ;
break ;
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case PDU_REQ :
dissect_dcerpc_dg_rqst ( tvb , offset , pinfo , dcerpc_tree , tree , & hdr , conv ) ;
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break ;
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case PDU_RESP :
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dissect_dcerpc_dg_resp ( tvb , offset , pinfo , dcerpc_tree , tree , & hdr , conv ) ;
break ;
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/* these requests have no body */
case PDU_ACK :
case PDU_PING :
case PDU_WORKING :
default :
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break ;
}
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return TRUE ;
}
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static void
dcerpc_init_protocol ( void )
{
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/* structures and data for BIND */
if ( dcerpc_binds ) {
g_hash_table_destroy ( dcerpc_binds ) ;
}
dcerpc_binds = g_hash_table_new ( dcerpc_bind_hash , dcerpc_bind_equal ) ;
if ( dcerpc_bind_key_chunk ) {
g_mem_chunk_destroy ( dcerpc_bind_key_chunk ) ;
}
dcerpc_bind_key_chunk = g_mem_chunk_new ( " dcerpc_bind_key_chunk " ,
sizeof ( dcerpc_bind_key ) ,
200 * sizeof ( dcerpc_bind_key ) ,
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G_ALLOC_ONLY ) ;
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if ( dcerpc_bind_value_chunk ) {
g_mem_chunk_destroy ( dcerpc_bind_value_chunk ) ;
}
dcerpc_bind_value_chunk = g_mem_chunk_new ( " dcerpc_bind_value_chunk " ,
sizeof ( dcerpc_bind_value ) ,
200 * sizeof ( dcerpc_bind_value ) ,
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G_ALLOC_ONLY ) ;
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/* structures and data for CALL */
if ( dcerpc_calls ) {
g_hash_table_destroy ( dcerpc_calls ) ;
}
dcerpc_calls = g_hash_table_new ( dcerpc_call_hash , dcerpc_call_equal ) ;
if ( dcerpc_call_key_chunk ) {
g_mem_chunk_destroy ( dcerpc_call_key_chunk ) ;
}
dcerpc_call_key_chunk = g_mem_chunk_new ( " dcerpc_call_key_chunk " ,
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sizeof ( dcerpc_call_key ) ,
200 * sizeof ( dcerpc_call_key ) ,
G_ALLOC_ONLY ) ;
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if ( dcerpc_call_value_chunk ) {
g_mem_chunk_destroy ( dcerpc_call_value_chunk ) ;
}
dcerpc_call_value_chunk = g_mem_chunk_new ( " dcerpc_call_value_chunk " ,
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sizeof ( dcerpc_call_value ) ,
200 * sizeof ( dcerpc_call_value ) ,
G_ALLOC_ONLY ) ;
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/* structure and data for MATCHED */
if ( dcerpc_matched ) {
g_hash_table_destroy ( dcerpc_matched ) ;
}
dcerpc_matched = g_hash_table_new ( dcerpc_matched_hash , dcerpc_matched_equal ) ;
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}
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void
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proto_register_dcerpc ( void )
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{
static hf_register_info hf [ ] = {
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{ & hf_dcerpc_request_in ,
{ " Request in " , " dcerpc.request_in " , FT_UINT32 , BASE_DEC ,
NULL , 0 , " This packet is a response to the packet in this frame " , HFILL } } ,
2002-08-28 21:04:11 +00:00
{ & hf_dcerpc_response_in ,
2002-01-23 05:38:32 +00:00
{ " Response in " , " dcerpc.response_in " , FT_UINT32 , BASE_DEC ,
NULL , 0 , " The response to this packet is in this packet " , HFILL } } ,
2002-08-28 21:04:11 +00:00
{ & hf_dcerpc_referent_id ,
2002-02-12 07:35:21 +00:00
{ " Referent ID " , " dcerpc.referent_id " , FT_UINT32 , BASE_HEX ,
NULL , 0 , " Referent ID for this NDR encoded pointer " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_ver ,
2001-06-18 02:18:27 +00:00
{ " Version " , " dcerpc.ver " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_ver_minor ,
2001-06-18 02:18:27 +00:00
{ " Version (minor) " , " dcerpc.ver_minor " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_packet_type ,
2002-06-19 08:34:38 +00:00
{ " Packet type " , " dcerpc.pkt_type " , FT_UINT8 , BASE_DEC , VALS ( pckt_vals ) , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags ,
2001-06-18 02:18:27 +00:00
{ " Packet Flags " , " dcerpc.cn_flags " , FT_UINT8 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_first_frag ,
2002-06-17 00:04:49 +00:00
{ " First Frag " , " dcerpc.cn_flags.first_frag " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_FIRST_FRAG , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_last_frag ,
2002-06-17 00:04:49 +00:00
{ " Last Frag " , " dcerpc.cn_flags.last_frag " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_LAST_FRAG , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_cancel_pending ,
2002-06-17 00:04:49 +00:00
{ " Cancel Pending " , " dcerpc.cn_flags.cancel_pending " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_PENDING_CANCEL , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_reserved ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.cn_flags.reserved " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_RESERVED_1 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_mpx ,
2002-06-17 00:04:49 +00:00
{ " Multiplex " , " dcerpc.cn_flags.mpx " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_CONC_MPX , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_dne ,
2002-06-17 00:04:49 +00:00
{ " Did Not Execute " , " dcerpc.cn_flags.dne " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_DID_NOT_EXECUTE , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_maybe ,
2002-06-17 00:04:49 +00:00
{ " Maybe " , " dcerpc.cn_flags.maybe " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_MAYBE , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_flags_object ,
2002-06-17 00:04:49 +00:00
{ " Object " , " dcerpc.cn_flags.object " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFC_OBJECT_UUID , " " , HFILL } } ,
2001-10-05 20:25:41 +00:00
{ & hf_dcerpc_drep ,
{ " Data Representation " , " dcerpc.drep " , FT_BYTES , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_drep_byteorder ,
{ " Byte order " , " dcerpc.drep.byteorder " , FT_UINT8 , BASE_DEC , VALS ( drep_byteorder_vals ) , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_drep_character ,
{ " Character " , " dcerpc.drep.character " , FT_UINT8 , BASE_DEC , VALS ( drep_character_vals ) , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_drep_fp ,
{ " Floating-point " , " dcerpc.drep.fp " , FT_UINT8 , BASE_DEC , VALS ( drep_fp_vals ) , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_frag_len ,
2001-06-18 02:18:27 +00:00
{ " Frag Length " , " dcerpc.cn_frag_len " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_auth_len ,
2001-06-18 02:18:27 +00:00
{ " Auth Length " , " dcerpc.cn_auth_len " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_cn_call_id ,
2001-06-18 02:18:27 +00:00
{ " Call ID " , " dcerpc.cn_call_id " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_max_xmit ,
2001-06-18 02:18:27 +00:00
{ " Max Xmit Frag " , " dcerpc.cn_max_xmit " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_max_recv ,
2001-06-18 02:18:27 +00:00
{ " Max Recv Frag " , " dcerpc.cn_max_recv " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_assoc_group ,
2001-06-18 02:18:27 +00:00
{ " Assoc Group " , " dcerpc.cn_assoc_group " , FT_UINT32 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_num_ctx_items ,
2001-06-18 02:18:27 +00:00
{ " Num Ctx Items " , " dcerpc.cn_num_ctx_items " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_ctx_id ,
2001-06-18 02:18:27 +00:00
{ " Context ID " , " dcerpc.cn_ctx_id " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_num_trans_items ,
2001-06-18 02:18:27 +00:00
{ " Num Trans Items " , " dcerpc.cn_num_trans_items " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_bind_if_id ,
2001-06-18 02:18:27 +00:00
{ " Interface UUID " , " dcerpc.cn_bind_to_uuid " , FT_STRING , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_bind_if_ver ,
2001-07-11 01:25:45 +00:00
{ " Interface Ver " , " dcerpc.cn_bind_if_ver " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_cn_bind_if_ver_minor ,
{ " Interface Ver Minor " , " dcerpc.cn_bind_if_ver_minor " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_bind_trans_id ,
2001-06-18 02:18:27 +00:00
{ " Transfer Syntax " , " dcerpc.cn_bind_trans_id " , FT_STRING , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_bind_trans_ver ,
2001-06-18 02:18:27 +00:00
{ " Syntax ver " , " dcerpc.cn_bind_trans_ver " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_alloc_hint ,
2001-06-18 02:18:27 +00:00
{ " Alloc hint " , " dcerpc.cn_alloc_hint " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_sec_addr_len ,
2001-06-18 02:18:27 +00:00
{ " Scndry Addr len " , " dcerpc.cn_sec_addr_len " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2002-03-16 22:54:20 +00:00
{ & hf_dcerpc_cn_sec_addr ,
2002-03-19 11:10:40 +00:00
{ " Scndry Addr " , " dcerpc.cn_sec_addr " , FT_STRINGZ , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_num_results ,
2001-06-18 02:18:27 +00:00
{ " Num results " , " dcerpc.cn_num_results " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_ack_result ,
2002-06-19 08:34:38 +00:00
{ " Ack result " , " dcerpc.cn_ack_result " , FT_UINT16 , BASE_DEC , VALS ( p_cont_result_vals ) , 0x0 , " " , HFILL } } ,
2001-04-19 23:39:27 +00:00
{ & hf_dcerpc_cn_ack_reason ,
2002-06-19 08:34:38 +00:00
{ " Ack reason " , " dcerpc.cn_ack_reason " , FT_UINT16 , BASE_DEC , VALS ( p_provider_reason_vals ) , 0x0 , " " , HFILL } } ,
For requests and responses for unknown interfaces, put an entry into the
DCE RPC protocol tree for the stub data.
Use the counts of context items and transfer syntax items when
dissecting a bind or alter context PDU.
In bind and alter context PDUs, create the conversation, attach the
context ID and interface to it, and put the interface information into
the Info column as soon as the first context item is dissected, so that
if we get an exception after that, we've still processed the context ID
and interface information.
Use the count of results when dissecting a bind ack PDU.
In bind ack PDUs, dissect the transfer syntax and syntax version fields,
and put the opnum and context ID information into the Info column as
soon as it's dissected.
When dissecting a connection-oriented request or response, don't make
the tvbuff the full fragment length if we don't have that much data in
the frame being dissected. (We should do TCP reassembly there,
eventually.)
In connection-oriented response PDUs, put the opnum and context ID
information into the Info column as soon as it's dissected.
svn path=/trunk/; revision=3982
2001-09-30 21:56:24 +00:00
{ & hf_dcerpc_cn_ack_trans_id ,
{ " Transfer Syntax " , " dcerpc.cn_ack_trans_id " , FT_STRING , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_cn_ack_trans_ver ,
{ " Syntax ver " , " dcerpc.cn_ack_trans_ver " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2002-06-19 08:34:38 +00:00
{ & hf_dcerpc_cn_reject_reason ,
{ " Reject reason " , " dcerpc.cn_reject_reason " , FT_UINT16 , BASE_DEC , VALS ( reject_reason_vals ) , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_cn_num_protocols ,
{ " Number of protocols " , " dcerpc.cn_num_protocols " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_cn_protocol_ver_major ,
{ " Protocol major version " , " dcerpc.cn_protocol_ver_major " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_cn_protocol_ver_minor ,
{ " Protocol minor version " , " dcerpc.cn_protocol_ver_minor " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-07-11 01:25:45 +00:00
{ & hf_dcerpc_cn_cancel_count ,
{ " Cancel count " , " dcerpc.cn_cancel_count " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2002-06-19 08:34:38 +00:00
{ & hf_dcerpc_cn_status ,
{ " Status " , " dcerpc.cn_status " , FT_UINT32 , BASE_HEX , VALS ( reject_status_vals ) , 0x0 , " " , HFILL } } ,
2001-09-28 22:43:57 +00:00
{ & hf_dcerpc_auth_type ,
2002-03-21 09:35:52 +00:00
{ " Auth type " , " dcerpc.auth_type " , FT_UINT8 , BASE_DEC , VALS ( authn_protocol_vals ) , 0x0 , " " , HFILL } } ,
2001-09-28 22:43:57 +00:00
{ & hf_dcerpc_auth_level ,
2002-03-21 09:35:52 +00:00
{ " Auth level " , " dcerpc.auth_level " , FT_UINT8 , BASE_DEC , VALS ( authn_level_vals ) , 0x0 , " " , HFILL } } ,
2001-09-28 22:43:57 +00:00
{ & hf_dcerpc_auth_pad_len ,
{ " Auth pad len " , " dcerpc.auth_pad_len " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_auth_rsrvd ,
{ " Auth Rsrvd " , " dcerpc.auth_rsrvd " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_auth_ctx_id ,
{ " Auth Context ID " , " dcerpc.auth_ctx_id " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1 ,
2001-06-18 02:18:27 +00:00
{ " Flags1 " , " dcerpc.dg_flags1 " , FT_UINT8 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_rsrvd_01 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags1_rsrvd_01 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_RESERVED_01 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_last_frag ,
2002-06-17 00:04:49 +00:00
{ " Last Fragment " , " dcerpc.dg_flags1_last_frag " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_LASTFRAG , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_frag ,
2002-06-17 00:04:49 +00:00
{ " Fragment " , " dcerpc.dg_flags1_frag " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_FRAG , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_nofack ,
2002-06-17 00:04:49 +00:00
{ " No Fack " , " dcerpc.dg_flags1_nofack " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_NOFACK , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_maybe ,
2002-06-17 00:04:49 +00:00
{ " Maybe " , " dcerpc.dg_flags1_maybe " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_MAYBE , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_idempotent ,
2002-06-17 00:04:49 +00:00
{ " Idempotent " , " dcerpc.dg_flags1_idempotent " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_IDEMPOTENT , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_broadcast ,
2002-06-17 00:04:49 +00:00
{ " Broadcast " , " dcerpc.dg_flags1_broadcast " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_BROADCAST , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags1_rsrvd_80 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags1_rsrvd_80 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL1_RESERVED_80 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2 ,
2001-06-18 02:18:27 +00:00
{ " Flags2 " , " dcerpc.dg_flags2 " , FT_UINT8 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_01 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_01 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_01 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_cancel_pending ,
2002-06-17 00:04:49 +00:00
{ " Cancel Pending " , " dcerpc.dg_flags2_cancel_pending " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_CANCEL_PENDING , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_04 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_04 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_04 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_08 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_08 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_08 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_10 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_10 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_10 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_20 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_20 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_20 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_40 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_40 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_40 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_flags2_rsrvd_80 ,
2002-06-17 00:04:49 +00:00
{ " Reserved " , " dcerpc.dg_flags2_rsrvd_80 " , FT_BOOLEAN , 8 , TFS ( & flags_set_truth ) , PFCL2_RESERVED_80 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_serial_lo ,
2001-06-18 02:18:27 +00:00
{ " Serial Low " , " dcerpc.dg_serial_lo " , FT_UINT8 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_serial_hi ,
2001-06-18 02:18:27 +00:00
{ " Serial High " , " dcerpc.dg_serial_hi " , FT_UINT8 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_ahint ,
2001-06-18 02:18:27 +00:00
{ " Activity Hint " , " dcerpc.dg_ahint " , FT_UINT16 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_ihint ,
2001-06-18 02:18:27 +00:00
{ " Interface Hint " , " dcerpc.dg_ihint " , FT_UINT16 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_frag_len ,
2002-02-12 07:55:23 +00:00
{ " Fragment len " , " dcerpc.dg_frag_len " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_frag_num ,
2002-02-12 07:55:23 +00:00
{ " Fragment num " , " dcerpc.dg_frag_num " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_auth_proto ,
2002-03-21 09:35:52 +00:00
{ " Auth proto " , " dcerpc.dg_auth_proto " , FT_UINT8 , BASE_DEC , VALS ( authn_protocol_vals ) , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_seqnum ,
2002-06-19 08:34:38 +00:00
{ " Sequence num " , " dcerpc.dg_seqnum " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_server_boot ,
2001-06-18 02:18:27 +00:00
{ " Server boot time " , " dcerpc.dg_server_boot " , FT_UINT32 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
2001-03-18 02:13:33 +00:00
{ & hf_dcerpc_dg_if_ver ,
2001-06-18 02:18:27 +00:00
{ " Interface Ver " , " dcerpc.dg_if_ver " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
2002-09-09 22:11:33 +00:00
{ & hf_dcerpc_krb5_av_prot_level ,
{ " Protection Level " , " dcerpc.krb5_av.prot_level " , FT_UINT8 , BASE_DEC , VALS ( authn_level_vals ) , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_krb5_av_key_vers_num ,
{ " Key Version Number " , " dcerpc.krb5_av.key_vers_num " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_krb5_av_key_auth_verifier ,
{ " Authentication Verifier " , " dcerpc.krb5_av.auth_verifier " , FT_BYTES , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_obj_id ,
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{ " Object " , " dcerpc.obj_id " , FT_STRING , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_dg_if_id ,
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{ " Interface " , " dcerpc.dg_if_id " , FT_STRING , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_dg_act_id ,
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{ " Activitiy " , " dcerpc.dg_act_id " , FT_STRING , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_opnum ,
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{ " Opnum " , " dcerpc.opnum " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_dg_cancel_vers ,
{ " Cancel Version " , " dcerpc.dg_cancel_vers " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_cancel_id ,
{ " Cancel ID " , " dcerpc.dg_cancel_id " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_server_accepting_cancels ,
{ " Server accepting cancels " , " dcerpc.server_accepting_cancels " , FT_BOOLEAN , BASE_NONE , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_vers ,
{ " FACK Version " , " dcerpc.fack_vers " , FT_UINT8 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_window_size ,
{ " Window Size " , " dcerpc.fack_window size " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_max_tsdu ,
{ " Max TSDU " , " dcerpc.fack_max_tsdu " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_max_frag_size ,
{ " Max Frag Size " , " dcerpc.fack_max_frag_size " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_serial_num ,
{ " Serial Num " , " dcerpc.fack_serial_num " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_selack_len ,
{ " Selective ACK Len " , " dcerpc.fack_selack_len " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_fack_selack ,
{ " Selective ACK " , " dcerpc.fack_selack " , FT_UINT32 , BASE_HEX , NULL , 0x0 , " " , HFILL } } ,
{ & hf_dcerpc_dg_status ,
{ " Status " , " dcerpc.dg_status " , FT_UINT32 , BASE_HEX , VALS ( reject_status_vals ) , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_array_max_count ,
{ " Max Count " , " dcerpc.array.max_count " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " Maximum Count: Number of elements in the array " , HFILL } } ,
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{ & hf_dcerpc_array_offset ,
{ " Offset " , " dcerpc.array.offset " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " Offset for first element in array " , HFILL } } ,
{ & hf_dcerpc_array_actual_count ,
{ " Actual Count " , " dcerpc.array.actual_count " , FT_UINT32 , BASE_DEC , NULL , 0x0 , " Actual Count: Actual number of elements in the array " , HFILL } } ,
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{ & hf_dcerpc_op ,
{ " Operation " , " dcerpc.op " , FT_UINT16 , BASE_DEC , NULL , 0x0 , " " , HFILL } } ,
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{ & hf_dcerpc_fragments ,
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{ " DCE/RPC Fragments " , " dcerpc.fragments " , FT_NONE , BASE_NONE ,
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NULL , 0x0 , " DCE/RPC Fragments " , HFILL } } ,
{ & hf_dcerpc_fragment ,
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{ " DCE/RPC Fragment " , " dcerpc.fragment " , FT_NONE , BASE_NONE ,
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NULL , 0x0 , " DCE/RPC Fragment " , HFILL } } ,
{ & hf_dcerpc_fragment_overlap ,
{ " Fragment overlap " , " dcerpc.fragment.overlap " , FT_BOOLEAN , BASE_NONE , NULL , 0x0 , " Fragment overlaps with other fragments " , HFILL } } ,
{ & hf_dcerpc_fragment_overlap_conflict ,
{ " Conflicting data in fragment overlap " , " dcerpc.fragment.overlap.conflict " , FT_BOOLEAN , BASE_NONE , NULL , 0x0 , " Overlapping fragments contained conflicting data " , HFILL } } ,
{ & hf_dcerpc_fragment_multiple_tails ,
{ " Multiple tail fragments found " , " dcerpc.fragment.multipletails " , FT_BOOLEAN , BASE_NONE , NULL , 0x0 , " Several tails were found when defragmenting the packet " , HFILL } } ,
{ & hf_dcerpc_fragment_too_long_fragment ,
{ " Fragment too long " , " dcerpc.fragment.toolongfragment " , FT_BOOLEAN , BASE_NONE , NULL , 0x0 , " Fragment contained data past end of packet " , HFILL } } ,
{ & hf_dcerpc_fragment_error ,
{ " Defragmentation error " , " dcerpc.fragment.error " , FT_NONE , BASE_NONE , NULL , 0x0 , " Defragmentation error due to illegal fragments " , HFILL } } ,
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} ;
static gint * ett [ ] = {
& ett_dcerpc ,
& ett_dcerpc_cn_flags ,
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& ett_dcerpc_drep ,
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& ett_dcerpc_dg_flags1 ,
& ett_dcerpc_dg_flags2 ,
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& ett_dcerpc_pointer_data ,
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& ett_dcerpc_fragments ,
& ett_dcerpc_fragment ,
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& ett_decrpc_krb5_auth_verf ,
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} ;
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module_t * dcerpc_module ;
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proto_dcerpc = proto_register_protocol ( " DCE RPC " , " DCERPC " , " dcerpc " ) ;
proto_register_field_array ( proto_dcerpc , hf , array_length ( hf ) ) ;
proto_register_subtree_array ( ett , array_length ( ett ) ) ;
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register_init_routine ( dcerpc_init_protocol ) ;
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dcerpc_module = prefs_register_protocol ( proto_dcerpc , NULL ) ;
prefs_register_bool_preference ( dcerpc_module ,
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" desegment_dcerpc " ,
" Desegment all DCE/RPC over TCP " ,
" Whether the DCE/RPC dissector should desegment all DCE/RPC over TCP " ,
& dcerpc_cn_desegment ) ;
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prefs_register_bool_preference ( dcerpc_module ,
" reassemble_dcerpc " ,
" Reassemble DCE/RPC fragments " ,
" Whether the DCE/RPC dissector should reassemble all fragmented PDUs " ,
& dcerpc_reassemble ) ;
register_init_routine ( dcerpc_reassemble_init ) ;
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dcerpc_uuids = g_hash_table_new ( dcerpc_uuid_hash , dcerpc_uuid_equal ) ;
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}
void
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proto_reg_handoff_dcerpc ( void )
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{
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heur_dissector_add ( " tcp " , dissect_dcerpc_cn_bs , proto_dcerpc ) ;
heur_dissector_add ( " netbios " , dissect_dcerpc_cn_pk , proto_dcerpc ) ;
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heur_dissector_add ( " udp " , dissect_dcerpc_dg , proto_dcerpc ) ;
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heur_dissector_add ( " smb_transact " , dissect_dcerpc_cn_bs , proto_dcerpc ) ;
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ntlmssp_handle = find_dissector ( " ntlmssp " ) ;
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gssapi_handle = find_dissector ( " gssapi " ) ;
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}