/* packet-dcerpc.c * Routines for DCERPC packet disassembly * Copyright 2001, Todd Sabin * * $Id: packet-dcerpc.c,v 1.4 2001/04/27 01:27:36 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * 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. * * 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. * * 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 #ifdef HAVE_SYS_TYPES_H #include #endif #include #include #include #include "packet.h" #include "packet-dcerpc.h" static const value_string pckt_vals[] = { { 0, "Request"}, { 1, "Ping"}, { 2, "Response"}, { 3, "Fault"}, { 4, "Working"}, { 5, "Nocall"}, { 6, "Reject"}, { 7, "Ack"}, { 8, "Cl_cancel"}, { 9, "Fack"}, { 10, "Cancel_ack"}, { 11, "Bind"}, { 12, "Bind_ack"}, { 13, "Bind_nak"}, { 14, "Alter_context"}, { 15, "Alter_context_resp"}, { 16, "AUTH3?"}, { 17, "Shutdown"}, { 18, "Co_cancel"}, { 19, "Orphaned"}, }; static const true_false_string flags_set_truth = { "Set", "Not set" }; static int proto_dcerpc = -1; /* field defines */ 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; static int hf_dcerpc_cn_frag_len = -1; static int hf_dcerpc_cn_auth_len = -1; static int hf_dcerpc_cn_call_id = -1; 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; 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; static int hf_dcerpc_cn_num_results = -1; static int hf_dcerpc_cn_ack_result = -1; static int hf_dcerpc_cn_ack_reason = -1; 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; static int hf_dcerpc_obj_id = -1; 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; static int hf_dcerpc_opnum = -1; static int hf_dcerpc_dg_seqnum = -1; static int hf_dcerpc_dg_server_boot = -1; static int hf_dcerpc_dg_if_ver = -1; static gint ett_dcerpc = -1; static gint ett_dcerpc_cn_flags = -1; static gint ett_dcerpc_dg_flags1 = -1; static gint ett_dcerpc_dg_flags2 = -1; 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) { unsigned int i; 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; iData4); i++) { uuid->Data4[i] = tvb_get_guint8 (tvb, offset+8+i); } } static void dissect_dcerpc_cn_bind (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree, e_dce_cn_common_hdr_t *hdr) { guint16 max_xmit, max_recv; guint32 assoc_group; guint8 num_ctx_items; guint16 ctx_id; guint16 num_trans_items; e_uuid_t if_id; e_uuid_t trans_id; guint32 if_ver, trans_ver; int offset = 16; max_xmit = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; max_recv = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; assoc_group = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep); offset += 4; num_ctx_items = tvb_get_guint8 (tvb, offset); offset++; /* padding */ offset += 3; ctx_id = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; num_trans_items = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &if_id); offset += 16; if_ver = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep); offset += 4; dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &trans_id); offset += 16; trans_ver = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep); offset += 4; if (check_col (pinfo->fd, COL_INFO)) { col_add_fstr (pinfo->fd, COL_INFO, "Bind: UUID %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x ver %d", 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 (dcerpc_tree) { offset = 16; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_xmit, tvb, offset, 2, max_xmit); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_recv, tvb, offset, 2, max_recv); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_assoc_group, tvb, offset, 4, assoc_group); offset += 4; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_num_ctx_items, tvb, offset, 1, num_ctx_items); offset++; /* padding */ offset += 3; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ctx_id, tvb, offset, 2, ctx_id); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_num_trans_items, tvb, offset, 2, num_trans_items); offset += 2; 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; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_bind_if_ver, tvb, offset, 4, if_ver); offset += 4; 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; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_bind_trans_ver, tvb, offset, 4, trans_ver); offset += 4; } } 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; guint32 assoc_group; guint16 sec_addr_len; guint8 num_results; guint16 result = 0; guint16 reason = 0; int offset = 16; max_xmit = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; max_recv = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; assoc_group = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep); offset += 4; sec_addr_len = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2 + sec_addr_len; if (offset % 4) { offset += 4 - offset % 4; } num_results = tvb_get_guint8 (tvb, offset); offset++; /* padding */ offset += 3; if (num_results == 1) { result = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; reason = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; } if (check_col (pinfo->fd, COL_INFO)) { if (num_results == 1 && result == 0) { col_add_fstr (pinfo->fd, COL_INFO, "Bind ack: accept max_xmit: %d max_recv: %d", max_xmit, max_recv); } else { /* FIXME: should put in reason */ col_add_fstr (pinfo->fd, COL_INFO, "Bind ack: %s", result == 1 ? "User reject" : result == 2 ? "Provider reject" : "Unknown"); } } if (dcerpc_tree) { offset = 16; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_xmit, tvb, offset, 2, max_xmit); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_recv, tvb, offset, 2, max_recv); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_assoc_group, tvb, offset, 4, assoc_group); offset += 4; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_sec_addr_len, tvb, offset, 2, sec_addr_len); offset +=2 + sec_addr_len; if (offset % 4) { offset += 4 - offset % 4; } proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_num_results, tvb, offset, 1, num_results); offset++; /* padding */ offset += 3; if (num_results == 1) { proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ack_result, tvb, offset, 2, result); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ack_reason, tvb, offset, 2, reason); offset += 2; } } } static void dissect_dcerpc_cn_rqst (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree, e_dce_cn_common_hdr_t *hdr) { guint32 alloc_hint; guint16 ctx_id; guint16 opnum; e_uuid_t obj_id; int offset = 16; alloc_hint = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep); offset += 4; ctx_id = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; opnum = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep); offset += 2; if (hdr->flags & 0x80) { dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &obj_id); offset += 16; } if (check_col (pinfo->fd, COL_INFO)) { col_add_fstr (pinfo->fd, COL_INFO, "Request: opnum: %d ctx_id:%d", opnum, ctx_id); } if (dcerpc_tree) { offset = 16; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_alloc_hint, tvb, offset, 4, alloc_hint); offset += 4; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ctx_id, tvb, offset, 2, ctx_id); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_opnum, tvb, offset, 2, opnum); offset += 2; if (hdr->flags & 0x80) { 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]); offset += 16; } } } /* * DCERPC dissector for connection oriented calls */ static gboolean dissect_dcerpc_cn (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_item *ti = NULL; proto_item *tf = NULL; proto_tree *dcerpc_tree = NULL; proto_tree *cn_flags_tree = NULL; e_dce_cn_common_hdr_t hdr; int offset = 0; /* * Check if this looks like a C/O DCERPC call */ if (!tvb_bytes_exist (tvb, 0, sizeof (hdr))) { return FALSE; } hdr.rpc_ver = tvb_get_guint8 (tvb, offset++); if (hdr.rpc_ver != 5) return FALSE; hdr.rpc_ver_minor = tvb_get_guint8 (tvb, offset++); if (hdr.rpc_ver_minor != 0 && hdr.rpc_ver_minor != 1) return FALSE; hdr.ptype = tvb_get_guint8 (tvb, offset++); if (hdr.ptype > 19) return FALSE; if (check_col (pinfo->fd, COL_PROTOCOL)) col_set_str (pinfo->fd, COL_PROTOCOL, "DCERPC"); if (check_col (pinfo->fd, COL_INFO)) col_set_str (pinfo->fd, COL_INFO, pckt_vals[hdr.ptype].strptr); 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; if (tree) { ti = proto_tree_add_item (tree, proto_dcerpc, tvb, 0, tvb_length(tvb), FALSE); if (ti) { dcerpc_tree = proto_item_add_subtree (ti, ett_dcerpc); } offset = 0; 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); cn_flags_tree = proto_item_add_subtree (tf, ett_dcerpc_cn_flags); if (cn_flags_tree) { proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_first_frag, 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_cancel_pending, 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_mpx, 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_maybe, tvb, offset, 1, hdr.flags); proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_object, tvb, offset, 1, hdr.flags); } offset++; proto_tree_add_text (dcerpc_tree, tvb, offset, sizeof (hdr.drep), "Data Rep"); offset += sizeof (hdr.drep); proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_frag_len, tvb, offset, 2, hdr.frag_len); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_auth_len, tvb, offset, 2, hdr.auth_len); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_call_id, tvb, offset, 4, hdr.call_id); offset += 4; } /* * Packet type specific stuff is next. */ switch (hdr.ptype) { case PDU_BIND: dissect_dcerpc_cn_bind (tvb, pinfo, dcerpc_tree, &hdr); break; case PDU_BIND_ACK: dissect_dcerpc_cn_bind_ack (tvb, pinfo, dcerpc_tree, &hdr); break; case PDU_REQ: dissect_dcerpc_cn_rqst (tvb, pinfo, dcerpc_tree, &hdr); break; default: break; } return TRUE; } /* * DCERPC dissector for connectionless calls */ 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; e_dce_dg_common_hdr_t hdr; int offset = 0; /* * Check if this looks like a CL DCERPC call. All dg packets * have an 80 byte header on them. Which starts with * version (4), pkt_type. */ if (!tvb_bytes_exist (tvb, 0, sizeof (hdr))) { return FALSE; } hdr.rpc_ver = tvb_get_guint8 (tvb, offset++); if (hdr.rpc_ver != 4) return FALSE; hdr.ptype = tvb_get_guint8 (tvb, offset++); if (hdr.ptype > 19) return FALSE; if (check_col (pinfo->fd, COL_PROTOCOL)) col_set_str (pinfo->fd, COL_PROTOCOL, "DCERPC"); if (check_col (pinfo->fd, COL_INFO)) col_set_str (pinfo->fd, COL_INFO, pckt_vals[hdr.ptype].strptr); 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++); if (tree) { ti = proto_tree_add_item (tree, proto_dcerpc, tvb, 0, tvb_length(tvb), FALSE); if (ti) { dcerpc_tree = proto_item_add_subtree(ti, ett_dcerpc); } offset = 0; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_ver, tvb, offset++, 1, hdr.rpc_ver); proto_tree_add_uint (dcerpc_tree, hf_dcerpc_packet_type, tvb, offset++, 1, hdr.ptype); tf = proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_flags1, tvb, offset, 1, hdr.flags1); dg_flags1_tree = proto_item_add_subtree (tf, ett_dcerpc_dg_flags1); if (dg_flags1_tree) { proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_rsrvd_01, 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_frag, 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_maybe, 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_broadcast, tvb, offset, 1, hdr.flags1); proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_rsrvd_80, tvb, offset, 1, hdr.flags1); } offset++; tf = proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_flags2, tvb, offset, 1, hdr.flags2); dg_flags2_tree = proto_item_add_subtree (tf, ett_dcerpc_dg_flags2); if (dg_flags2_tree) { proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_01, 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_04, 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_10, 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_40, tvb, offset, 1, hdr.flags2); proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_80, tvb, offset, 1, hdr.flags2); } offset++; proto_tree_add_text (dcerpc_tree, tvb, offset, sizeof (hdr.drep), "Data Rep"); offset += sizeof (hdr.drep); proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_serial_hi, tvb, offset++, 1, hdr.serial_hi); proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_obj_id, tvb, offset, 16, "HMMM", "Object: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", 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]); offset += 16; 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", 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]); offset += 16; 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", 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]); offset += 16; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_server_boot, tvb, offset, 4, hdr.server_boot); offset += 4; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_if_ver, tvb, offset, 4, hdr.if_ver); offset += 4; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_seqnum, tvb, offset, 4, hdr.seqnum); offset += 4; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_opnum, tvb, offset, 2, hdr.opnum); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_ihint, tvb, offset, 2, hdr.ihint); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_ahint, tvb, offset, 2, hdr.ahint); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_frag_len, tvb, offset, 2, hdr.frag_len); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_frag_num, tvb, offset, 2, hdr.frag_num); offset += 2; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_auth_proto, tvb, offset, 1, hdr.auth_proto); offset++; proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_serial_lo, tvb, offset, 1, hdr.serial_lo); offset++; } /* * Packet type specific stuff is next. */ return TRUE; } void proto_register_dcerpc(void) { static hf_register_info hf[] = { { &hf_dcerpc_ver, { "Version", "dcerpc.ver", FT_UINT8, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_ver_minor, { "Version (minor)", "dcerpc.ver_minor", FT_UINT8, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_packet_type, { "Packet type", "dcerpc.pkt_type", FT_UINT8, BASE_HEX, VALS (pckt_vals), 0x0, "" }}, { &hf_dcerpc_cn_flags, { "Packet Flags", "dcerpc.cn_flags", FT_UINT8, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_cn_flags_first_frag, { "First Frag", "dcerpc.cn_flags.first_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x1, "" }}, { &hf_dcerpc_cn_flags_last_frag, { "Last Frag", "dcerpc.cn_flags.last_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x2, "" }}, { &hf_dcerpc_cn_flags_cancel_pending, { "Cancel Pending", "dcerpc.cn_flags.cancel_pending", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x4, "" }}, { &hf_dcerpc_cn_flags_reserved, { "Reserved", "dcerpc.cn_flags.reserved", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x8, "" }}, { &hf_dcerpc_cn_flags_mpx, { "Multiplex", "dcerpc.cn_flags.mpx", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "" }}, { &hf_dcerpc_cn_flags_dne, { "Did Not Execute", "dcerpc.cn_flags.dne", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "" }}, { &hf_dcerpc_cn_flags_maybe, { "Maybe", "dcerpc.cn_flags.maybe", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "" }}, { &hf_dcerpc_cn_flags_object, { "Object", "dcerpc.cn_flags.object", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "" }}, { &hf_dcerpc_cn_frag_len, { "Frag Length", "dcerpc.cn_frag_len", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_auth_len, { "Auth Length", "dcerpc.cn_auth_len", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_call_id, { "Call ID", "dcerpc.cn_call_id", FT_UINT32, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_max_xmit, { "Max Xmit Frag", "dcerpc.cn_max_xmit", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_max_recv, { "Max Recv Frag", "dcerpc.cn_max_recv", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_assoc_group, { "Assoc Group", "dcerpc.cn_assoc_group", FT_UINT32, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_cn_num_ctx_items, { "Num Ctx Items", "dcerpc.cn_num_ctx_items", FT_UINT8, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_ctx_id, { "Context ID", "dcerpc.cn_ctx_id", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_num_trans_items, { "Num Trans Items", "dcerpc.cn_num_trans_items", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_bind_if_id, { "Interface UUID", "dcerpc.cn_bind_to_uuid", FT_STRING, BASE_NONE, NULL, 0x0, "" }}, { &hf_dcerpc_cn_bind_if_ver, { "Interface Ver", "dcerpc.cn_bind_if_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_bind_trans_id, { "Transfer Syntax", "dcerpc.cn_bind_trans_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }}, { &hf_dcerpc_cn_bind_trans_ver, { "Syntax ver", "dcerpc.cn_bind_trans_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_alloc_hint, { "Alloc hint", "dcerpc.cn_alloc_hint", FT_UINT32, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_sec_addr_len, { "Scndry Addr len", "dcerpc.cn_sec_addr_len", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_num_results, { "Num results", "dcerpc.cn_num_results", FT_UINT8, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_ack_result, { "Ack result", "dcerpc.cn_ack_result", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_cn_ack_reason, { "Ack reason", "dcerpc.cn_ack_reason", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_dg_flags1, { "Flags1", "dcerpc.dg_flags1", FT_UINT8, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_flags1_rsrvd_01, { "Reserved", "dcerpc.dg_flags1_rsrvd_01", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x01, "" }}, { &hf_dcerpc_dg_flags1_last_frag, { "Last Fragment", "dcerpc.dg_flags1_last_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x02, "" }}, { &hf_dcerpc_dg_flags1_frag, { "Fragment", "dcerpc.dg_flags1_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x04, "" }}, { &hf_dcerpc_dg_flags1_nofack, { "No Fack", "dcerpc.dg_flags1_nofack", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x08, "" }}, { &hf_dcerpc_dg_flags1_maybe, { "Maybe", "dcerpc.dg_flags1_maybe", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "" }}, { &hf_dcerpc_dg_flags1_idempotent, { "Idempotent", "dcerpc.dg_flags1_idempotent", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "" }}, { &hf_dcerpc_dg_flags1_broadcast, { "Broadcast", "dcerpc.dg_flags1_broadcast", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "" }}, { &hf_dcerpc_dg_flags1_rsrvd_80, { "Reserved", "dcerpc.dg_flags1_rsrvd_80", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "" }}, { &hf_dcerpc_dg_flags2, { "Flags2", "dcerpc.dg_flags2", FT_UINT8, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_01, { "Reserved", "dcerpc.dg_flags2_rsrvd_01", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x01, "" }}, { &hf_dcerpc_dg_flags2_cancel_pending, { "Cancel Pending", "dcerpc.dg_flags2_cancel_pending", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x02, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_04, { "Reserved", "dcerpc.dg_flags2_rsrvd_04", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x04, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_08, { "Reserved", "dcerpc.dg_flags2_rsrvd_08", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x08, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_10, { "Reserved", "dcerpc.dg_flags2_rsrvd_10", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_20, { "Reserved", "dcerpc.dg_flags2_rsrvd_20", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_40, { "Reserved", "dcerpc.dg_flags2_rsrvd_40", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "" }}, { &hf_dcerpc_dg_flags2_rsrvd_80, { "Reserved", "dcerpc.dg_flags2_rsrvd_80", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "" }}, { &hf_dcerpc_dg_serial_lo, { "Serial Low", "dcerpc.dg_serial_lo", FT_UINT8, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_serial_hi, { "Serial High", "dcerpc.dg_serial_hi", FT_UINT8, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_ahint, { "Activity Hint", "dcerpc.dg_ahint", FT_UINT16, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_ihint, { "Interface Hint", "dcerpc.dg_ihint", FT_UINT16, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_frag_len, { "Fragment len", "dcerpc.dg_frag_len", FT_UINT16, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_frag_num, { "Fragment num", "dcerpc.dg_frag_num", FT_UINT16, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_auth_proto, { "Auth proto", "dcerpc.dg_auth_proto", FT_UINT8, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_seqnum, { "Sequence num", "dcerpc.dg_seqnum", FT_UINT32, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_server_boot, { "Server boot time", "dcerpc.dg_server_boot", FT_UINT32, BASE_HEX, NULL, 0x0, "" }}, { &hf_dcerpc_dg_if_ver, { "Interface Ver", "dcerpc.dg_if_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "" }}, { &hf_dcerpc_obj_id, { "Object", "dcerpc.obj_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }}, { &hf_dcerpc_dg_if_id, { "Interface", "dcerpc.dg_if_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }}, { &hf_dcerpc_dg_act_id, { "Activitiy", "dcerpc.dg_act_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }}, { &hf_dcerpc_opnum, { "Opnum", "dcerpc.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, "" }}, }; static gint *ett[] = { &ett_dcerpc, &ett_dcerpc_cn_flags, &ett_dcerpc_dg_flags1, &ett_dcerpc_dg_flags2, }; 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)); } void proto_reg_handoff_dcerpc(void) { heur_dissector_add ("tcp", dissect_dcerpc_cn, proto_dcerpc); heur_dissector_add ("udp", dissect_dcerpc_dg, proto_dcerpc); }