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Copy pathpacket-saprfc.c
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packet-saprfc.c
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/*
# ===========
# SAP Dissector Plugin for Wireshark
#
# Copyright (C) 2015 Core Security Technologies
#
# The plugin was designed and developed by Martin Gallo from the Security
# Consulting Services team of Core Security Technologies.
#
# 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.
# ==============
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/expert.h>
#include <epan/wmem/wmem.h>
/* Common helpers for adding items */
#include "saphelpers.h"
/* SAP Decompression routine */
#include "sapdecompress.h"
/* Define default ports */
#define SAPRFC_PORT_RANGE "3300-3399"
/* SAP RFC Request Types field values */
static const value_string hf_saprfc_reqtype_values[] = {
{ 0x00, "GW_UNDEF_TYPE" },
{ 0x01, "GW_CHECK_GATEWAY" },
{ 0x02, "GW_CONNECT_GWWP" },
{ 0x03, "GW_NORMAL_CLIENT" },
{ 0x04, "GW_REMOTE_GATEWAY" },
{ 0x05, "STOP_GATEWAY" },
{ 0x06, "GW_LOCAL_R3" },
{ 0x07, "GW_SEND_INTERNAL_ERROR" },
{ 0x08, "GW_SEND_INFO" },
{ 0x09, "GW_SEND_CMD" },
{ 0x0a, "GW_WORKPROCESS_DIED" },
{ 0x0b, "GW_REGISTER_TP" },
{ 0x0c, "GW_UNREGISTER_TP" },
{ 0x0d, "GW_CONNECT_DISP" },
{ 0x0e, "GW_GET_NO_REGISTER_TP" },
{ 0x0f, "GW_SAP_WP_CLIENT" },
{ 0x10, "GW_CANCEL_REGISTER_TP" },
{ 0x11, "REMOTE_GATEWAY" },
{ 0x12, "GW_CONTAINER_RECEIVED" },
};
/* SAP RFC Monitor Command field values */
static const value_string hf_saprfc_monitor_cmd_values[] = {
{ 0x01, "NOOP" },
{ 0x02, "DELETE_CONN" },
{ 0x03, "CANCEL_CONN" },
{ 0x04, "RST_SINGLE_ERR_CNT" },
{ 0x05, "RST_ALL_ERR_CNT" },
{ 0x06, "INCREASE_TRACE" },
{ 0x07, "DECREASE_TRACE" },
{ 0x08, "READ_SEC_INFO" },
{ 0x09, "REFRESH_SEC_INFO" },
{ 0x0a, "READ_GWSYS_TBL" },
{ 0x0b, "READ_CONN_TBL" },
{ 0x0c, "READ_PROC_TBL" },
{ 0x0d, "READ_CONN_ATTR" },
{ 0x0e, "READ_MEMORY" },
{ 0x0f, "READ_REQ_BLK" },
{ 0x10, "ACT_STATISTIC" },
{ 0x11, "DEACT_STATISTIC" },
{ 0x12, "READ_STATISTIC" },
{ 0x13, "RESET_STATISTIC" },
{ 0x14, "READ_PARAMETER" },
{ 0x19, "DUMP_NIBUFFER" },
{ 0x20, "RESET_NIBUFFER" },
{ 0x21, "ACT_EXTPGM_TRACE" },
{ 0x22, "DEACT_EXTPGM_TRACE" },
{ 0x23, "ACT_CONN_TRACE" },
{ 0x24, "DEACT_CONN_TRACE" },
{ 0x25, "RESET_TRACE" },
{ 0x26, "SUICIDE" },
{ 0x27, "READ_SEC_INFO2" },
{ 0x28, "CANCEL_REG_TP" },
{ 0x29, "DUMP" },
{ 0x2a, "READ_GWSYS_TBL2" },
{ 0x2b, "CHANGE_PARAMETER" },
{ 0x2c, "GET_CONN_PARTNER" },
{ 0x2d, "DELETE_CLIENT" },
{ 0x2e, "DELETE_REMGW" },
{ 0x2f, "DISCONNECT" },
{ 0x30, "ENABLE_RESTART" },
{ 0x31, "DISABLE_RESTART" },
{ 0x32, "NI_TRACE" },
{ 0x33, "CLI_INFO" },
{ 0x34, "GW_INFO" },
{ 0x35, "CONVID_INFO" },
{ 0x36, "GET_NO_REG_TP" },
{ 0x37, "CV_INFO" },
{ 0x38, "SO_KEEPALIVE" },
{ 0x39, "READ_CONN_TBL2" },
{ 0x40, "READ_GWSYS_TBL3" },
{ 0x41, "RELOAD_ACL" },
{ 0x00, NULL }
};
/* SAP RFC APPC Header Request Type field values */
static const value_string hf_saprfc_header_reqtype_values[] = {
{ 0x00, "F_NO_REQUEST" },
{ 0x01, "F_INITIALIZE_CONVERSATION" },
{ 0x03, "F_ACCEPT_CONVERSATION" },
{ 0x05, "F_ALLOCATE" },
{ 0x07, "F_SEND_DATA" },
{ 0x08, "F_ASEND_DATA" },
{ 0x09, "F_RECEIVE" },
{ 0x0a, "F_ARECEIVE" },
{ 0x0b, "F_DEALLOCATE" },
{ 0x0d, "F_SET_TP_NAME" },
{ 0x0f, "F_SET_PARTNER_LU_NAME" },
{ 0x11, "F_SET_SECURITY_PASSWORD" },
{ 0x13, "F_SET_SECURITY_USER_ID" },
{ 0x15, "F_SET_SECURITY_TYPE" },
{ 0x17, "F_SET_CONVERSATION_TYPE" },
{ 0x19, "F_EXTRACT_TP_NAME" },
{ 0x1b, "F_FLUSH" },
{ 0xc9, "F_SAP_ALLOCATE" },
{ 0xca, "F_SAP_INIT" },
{ 0xcb, "F_SAP_SEND" },
{ 0xcc, "F_ASAP_SEND" },
{ 0xcd, "F_SAP_SYNC" },
{ 0xce, "F_SAP_PING" },
{ 0xcf, "F_SAP_REGTP" },
{ 0xd0, "F_SAP_UNREGTP" },
{ 0xd1, "F_SAP_ACCPTP" },
{ 0xd2, "F_SAP_UNACCPTP" },
{ 0xd3, "F_SAP_CANCTP" },
{ 0xd4, "F_SAP_SET_UID" },
{ 0xd5, "F_SAP_CANCEL" },
{ 0xd6, "F_SAP_CANCELED" },
};
/* SAP RFC APPC Header Protocol field values */
static const value_string hf_saprfc_header_protocol_values[] = {
{ 0x00, "R2PR" },
{ 0x01, "INT" },
{ 0x02, "EXT" },
{ 0x03, "CPIC" },
{ 0x05, "NE" },
{ 0x06, "REG" },
{ 0x42, "CPIC" },
{ 0x44, "EXT" },
{ 0x45, "NE" },
{ 0x48, "INT" },
{ 0x61, "REG" },
};
/* SAP RFC APPC Header APPC Return Code field values */
static const value_string hf_saprfc_header_appc_rc_values[] = {
{ 0x00, "CM_OK" },
{ 0x01, "CM_ALLOCATE_FAILURE_NO_RETRY" },
{ 0x02, "CM_ALLOCATE_FAILURE_RETRY" },
{ 0x03, "CM_CONVERSATION_TYPE_MISMATCH" },
{ 0x06, "CM_SECURITY_NOT_VALID" },
{ 0x08, "CM_SYNC_LVL_NOT_SUPPORTED_PGM" },
{ 0x09, "CM_TPN_NOT_RECOGNIZED" },
{ 0x0a, "CM_TP_NOT_AVAILABLE_NO_RETRY" },
{ 0x0b, "CM_TP_NOT_AVAILABLE_RETRY" },
{ 0x11, "CM_DEALLOCATED_ABEND" },
{ 0x12, "CM_DEALLOCATED_NORMAL" },
{ 0x13, "CM_PARAMETER_ERROR" },
{ 0x14, "CM_PRODUCT_SPECIFIC_ERROR" },
{ 0x15, "CM_PROGRAM_ERROR_NO_TRUNC" },
{ 0x16, "CM_PROGRAM_ERROR_PURGING" },
{ 0x17, "CM_PROGRAM_ERROR_TRUNC" },
{ 0x18, "CM_PROGRAM_PARAMETER_CHECK" },
{ 0x19, "CM_PROGRAM_STATE_CHECK" },
{ 0x1a, "CM_RESOURCE_FAILURE_NO_RETRY" },
{ 0x1b, "CM_RESOURCE_FAILURE_RETRY" },
{ 0x1c, "CM_UNSUCCESSFUL" },
{ 0x23, "CM_OPERATION_INCOMPLETE" },
{ 0x24, "CM_SYSTEM_EVENT" },
{ 0x2711, "CM_SAP_TIMEOUT_RETRY" },
{ 0x2712, "CM_CANCEL_REQUEST" },
};
/* SAP RFC APPC Header MCPIC Parameters Client Info values */
static const value_string hf_saprfc_header_ncpic_parameters_client_info_values[] = {
{ 0x00, "GW_NO_CLIENT_INFO" },
{ 0x01, "GW_EXTERNAL_CLIENT" },
{ 0x02, "GW_R3_CLIENT" },
};
/* SAP RFC Accept Info Flag values */
#define SAPRFC_ACCEPT_INFO_EINFO 0x01
#define SAPRFC_ACCEPT_INFO_PING 0x02
#define SAPRFC_ACCEPT_INFO_SNC 0x04
#define SAPRFC_ACCEPT_INFO_CONN_EINFO 0x08
#define SAPRFC_ACCEPT_INFO_CODE_PAGE 0x10
#define SAPRFC_ACCEPT_INFO_NIPING 0x20
#define SAPRFC_ACCEPT_INFO_EXTINITOPT 0x40
#define SAPRFC_ACCEPT_INFO_GW_ACCEPT_DIST_TRACE 0x80
/* SAP RFC APPC Header Info Flags values */
#define SAPRFC_APPCHDR_INFO1_SYNC_CPIC_FUNCTION 0x01
#define SAPRFC_APPCHDR_INFO1_WITH_HOSTADDR 0x02
#define SAPRFC_APPCHDR_INFO1_WITH_GW_SAP_PARAMS_HDR 0x04
#define SAPRFC_APPCHDR_INFO1_CPIC_SYNC_REQ 0x08
#define SAPRFC_APPCHDR_INFO1_WITH_ERR_INFO 0x10
#define SAPRFC_APPCHDR_INFO1_DATA_WITH_TERM_OUTPUT 0x20
#define SAPRFC_APPCHDR_INFO1_DATA_WITH_TERM_INPUT 0x40
#define SAPRFC_APPCHDR_INFO1_R3_CPIC_LOGIN_WITH_TERM 0x80
#define SAPRFC_APPCHDR_INFO2_WITH_LONG_LU_NAME 0x01
#define SAPRFC_APPCHDR_INFO2_WITH_LONG_HOSTADDR 0x02
#define SAPRFC_APPCHDR_INFO2_GW_IMMEDIATE 0x04
#define SAPRFC_APPCHDR_INFO2_GW_SNC_ACTIVE 0x08
#define SAPRFC_APPCHDR_INFO2_GW_WAIT_LOOK_UP 0x10
#define SAPRFC_APPCHDR_INFO2_SNC_INIT_PHASE 0x20
#define SAPRFC_APPCHDR_INFO2_GW_STATELESS 0x40
#define SAPRFC_APPCHDR_INFO2_GW_NO_STATE_CHECK 0x80
#define SAPRFC_APPCHDR_INFO3_GW_WITH_CODE_PAGE 0x01
#define SAPRFC_APPCHDR_INFO3_GW_ASYNC_RFC 0x02
#define SAPRFC_APPCHDR_INFO3_GW_CANCEL_HARD 0x04
#define SAPRFC_APPCHDR_INFO3_GW_CANCEL_SOFT 0x08
#define SAPRFC_APPCHDR_INFO3_GW_WITH_GUI_TIMEOUT 0x10
#define SAPRFC_APPCHDR_INFO3_GW_TERMIO_ERROR 0x20
#define SAPRFC_APPCHDR_INFO3_GW_EXTENDED_INIT_OPTIONS 0x40
#define SAPRFC_APPCHDR_INFO3_GW_DIST_TRACE 0x80
#define SAPRFC_APPCHDR_INFO4_GW_WITH_DBG_CTL 0x01
/* SAP RFC APPC Header Request Type 2 Flags values */
#define SAPRFC_APPCHDR_REQTYPE2_F_V_INITIALIZE_CONVERSATION 0x01
#define SAPRFC_APPCHDR_REQTYPE2_F_V_ALLOCATE 0x02
#define SAPRFC_APPCHDR_REQTYPE2_F_V_SEND_DATA 0x04
#define SAPRFC_APPCHDR_REQTYPE2_F_V_RECEIVE 0x08
#define SAPRFC_APPCHDR_REQTYPE2_F_V_FLUSH 0x10
static int proto_saprfc = -1;
static int hf_saprfc_version = -1;
static int hf_saprfc_reqtype = -1;
static int hf_saprfc_address = -1;
static int hf_saprfc_service = -1;
static int hf_saprfc_codepage = -1;
static int hf_saprfc_lu = -1;
static int hf_saprfc_tp = -1;
static int hf_saprfc_conversation_id = -1;
static int hf_saprfc_appc_header_version = -1;
static int hf_saprfc_accept_info = -1; // (EINFO PING CONN_EINFO EXTINITOPT GW_ACCEPT_DIST_TRACE (0xCB))
static int hf_saprfc_accept_info_EINFO = -1;
static int hf_saprfc_accept_info_PING = -1;
static int hf_saprfc_accept_info_SNC = -1;
static int hf_saprfc_accept_info_CONN_EINFO = -1;
static int hf_saprfc_accept_info_CODE_PAGE = -1;
static int hf_saprfc_accept_info_NIPING = -1;
static int hf_saprfc_accept_info_EXTINITOPT = -1;
static int hf_saprfc_accept_info_GW_ACCEPT_DIST_TRACE = -1;
static int hf_saprfc_idx = -1;
static int hf_saprfc_address6 = -1;
static int hf_saprfc_rc = -1;
static int hf_saprfc_echo_data = -1;
static int hf_saprfc_filler = -1;
static int hf_saprfc_monitor_cmd = -1;
static int hf_saprfc_header = -1;
static int hf_saprfc_header_version = -1;
static int hf_saprfc_header_reqtype = -1;
static int hf_saprfc_header_protocol = -1;
static int hf_saprfc_header_mode = -1;
static int hf_saprfc_header_uid = -1;
static int hf_saprfc_header_gw_id = -1;
static int hf_saprfc_header_err_len = -1;
static int hf_saprfc_header_info2 = -1;
static int hf_saprfc_header_info2_WITH_LONG_LU_NAME = -1;
static int hf_saprfc_header_info2_WITH_LONG_HOSTADDR = -1;
static int hf_saprfc_header_info2_GW_IMMEDIATE = -1;
static int hf_saprfc_header_info2_GW_SNC_ACTIVE = -1;
static int hf_saprfc_header_info2_GW_WAIT_LOOK_UP = -1;
static int hf_saprfc_header_info2_SNC_INIT_PHASE = -1;
static int hf_saprfc_header_info2_GW_STATELESS = -1;
static int hf_saprfc_header_info2_GW_NO_STATE_CHECK = -1;
static int hf_saprfc_header_trace_level = -1;
static int hf_saprfc_header_time = -1;
static int hf_saprfc_header_info3 = -1;
static int hf_saprfc_header_info3_GW_WITH_CODE_PAGE = -1;
static int hf_saprfc_header_info3_GW_ASYNC_RFC = -1;
static int hf_saprfc_header_info3_GW_CANCEL_HARD = -1;
static int hf_saprfc_header_info3_GW_CANCEL_SOFT = -1;
static int hf_saprfc_header_info3_GW_WITH_GUI_TIMEOUT = -1;
static int hf_saprfc_header_info3_GW_TERMIO_ERROR = -1;
static int hf_saprfc_header_info3_GW_EXTENDED_INIT_OPTIONS = -1;
static int hf_saprfc_header_info3_GW_DIST_TRACE = -1;
static int hf_saprfc_header_timeout = -1;
static int hf_saprfc_header_info4 = -1;
static int hf_saprfc_header_info4_GW_WITH_DBG_CTL = -1;
static int hf_saprfc_header_sequence_no = -1;
static int hf_saprfc_header_sap_params_len = -1;
static int hf_saprfc_header_info = -1;
static int hf_saprfc_header_info_SYNC_CPIC_FUNCTION = -1;
static int hf_saprfc_header_info_WITH_HOSTADDR = -1;
static int hf_saprfc_header_info_WITH_GW_SAP_PARAMS_HDR = -1;
static int hf_saprfc_header_info_CPIC_SYNC_REQ = -1;
static int hf_saprfc_header_info_WITH_ERR_INFO = -1;
static int hf_saprfc_header_info_DATA_WITH_TERM_OUTPUT = -1;
static int hf_saprfc_header_info_DATA_WITH_TERM_INPUT = -1;
static int hf_saprfc_header_info_R3_CPIC_LOGIN_WITH_TERM = -1;
static int hf_saprfc_header_reqtype2 = -1;
static int hf_saprfc_header_reqtype2_F_V_INITIALIZE_CONVERSATION = -1;
static int hf_saprfc_header_reqtype2_F_V_ALLOCATE = -1;
static int hf_saprfc_header_reqtype2_F_V_SEND_DATA = -1;
static int hf_saprfc_header_reqtype2_F_V_RECEIVE = -1;
static int hf_saprfc_header_reqtype2_F_V_FLUSH = -1;
static int hf_saprfc_header_appc_rc = -1;
static int hf_saprfc_header_sap_rc = -1; // TODO: Add SAP Return values
static int hf_saprfc_header_conversation_id = -1;
static int hf_saprfc_header_ncpic_parameters = -1;
static int hf_saprfc_header_ncpic_parameters_sdest = -1;
static int hf_saprfc_header_ncpic_parameters_lu = -1;
static int hf_saprfc_header_ncpic_parameters_tp = -1;
static int hf_saprfc_header_ncpic_parameters_ctype = -1;
static int hf_saprfc_header_ncpic_parameters_client_info = -1;
static int hf_saprfc_header_ncpic_parameters_lu_name = -1;
static int hf_saprfc_header_ncpic_parameters_lu_name_length = -1;
static int hf_saprfc_header_ncpic_parameters_host_address = -1;
static int hf_saprfc_header_ncpic_parameters_security_password = -1;
static int hf_saprfc_header_ncpic_parameters_security_password_length = -1;
static int hf_saprfc_header_comm_idx = -1;
static int hf_saprfc_header_conn_idx = -1;
static int hf_saprfc_rfcheader = -1;
static int hf_saprfc_ucheader = -1;
static int hf_saprfc_ucheader_codepage = -1;
static int hf_saprfc_ucheader_ce = -1;
static int hf_saprfc_ucheader_et = -1;
static int hf_saprfc_ucheader_cs = -1;
static int hf_saprfc_ucheader_returncode = -1;
static int hf_saprfc_item = -1;
static int hf_saprfc_item_id1 = -1;
static int hf_saprfc_item_id2 = -1;
static int hf_saprfc_item_id3 = -1;
static int hf_saprfc_item_id4 = -1;
static int hf_saprfc_item_length = -1;
static int hf_saprfc_item_value = -1;
static int hf_saprfc_table = -1;
static int hf_saprfc_table_length = -1;
static int hf_saprfc_table_compress_header = -1;
static int hf_saprfc_table_uncomplength = -1;
static int hf_saprfc_table_algorithm = -1;
static int hf_saprfc_table_magic = -1;
static int hf_saprfc_table_special = -1;
static int hf_saprfc_table_return_code = -1;
static int hf_saprfc_table_content = -1;
static int hf_saprfc_payload = -1;
/* TODO: Add CPIC error codes (http://service.sap.com/sap/support/notes/63347) */
/* TODO: Add RFC logon error codes (http://service.sap.com/sap/support/notes/320991) */
static gint ett_saprfc = -1;
/* Expert info */
static expert_field ei_saprfc_invalid_decompresssion = EI_INIT;
static expert_field ei_saprfc_invalid_decompress_length = EI_INIT;
static expert_field ei_saprfc_unknown_item = EI_INIT;
/* Global decompress preference */
static gboolean global_saprfc_decompress = TRUE;
/* Global table reassembling preference */
static gboolean global_saprfc_table_reassembly = TRUE;
/* Global port preference */
static range_t *global_saprfc_port_range;
/* Global highlight preference */
static gboolean global_saprfc_highlight_items = TRUE;
/* Protocol handles for both external and internal dissectors */
static dissector_handle_t saprfc_handle;
static dissector_handle_t saprfcinternal_handle;
void proto_reg_handoff_saprfc(void);
static void
dissect_saprfc_tables_compressed(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree){
guint8 *decompressed_buffer;
guint32 reported_length = 0, uncompress_length = 0, offset = 0, initial_offset = 0;
proto_item *compression_header = NULL, *rl = NULL;
proto_tree *compression_header_tree = NULL;
tvbuff_t *next_tvb = NULL;
/* Skip the first 8 bytes */
initial_offset = offset = 8;
/* Add the compression header subtree */
compression_header = proto_tree_add_item(tree, hf_saprfc_table_compress_header, tvb, offset, 8, FALSE);
compression_header_tree = proto_item_add_subtree(compression_header, ett_saprfc);
/* Add the uncompressed length */
reported_length = tvb_get_letohl(tvb, offset);
rl = proto_tree_add_uint(compression_header_tree, hf_saprfc_table_uncomplength, tvb, offset, 4, reported_length); offset+=4;
proto_item_append_text(compression_header, ", Uncompressed Len: %u", reported_length);
/* Add the algorithm */
proto_tree_add_item(compression_header_tree, hf_saprfc_table_algorithm, tvb, offset, 1, FALSE); offset++;
/* Add the magic bytes */
proto_tree_add_item(compression_header_tree, hf_saprfc_table_magic, tvb, offset, 2, FALSE); offset+=2;
/* Add the max bits */
proto_tree_add_item(compression_header_tree, hf_saprfc_table_special, tvb, offset, 1, FALSE); offset++;
if (global_saprfc_decompress == TRUE){
int rt = 0;
/* Allocate the buffer only in the scope of current packet, using the
* reported length */
decompressed_buffer = (guint8 *)wmem_alloc0(wmem_packet_scope(), reported_length);
if (!decompressed_buffer){
return;
}
uncompress_length = reported_length;
/* Decompress the payload */
rt = decompress_packet(tvb_get_ptr(tvb, initial_offset, -1),
tvb_captured_length_remaining(tvb, initial_offset),
decompressed_buffer,
&uncompress_length);
/* Check the return code and add a expert info warning if an error
* occurred. The dissector continues trying to add the payload,
* however the returned size should be 0. */
if (rt < 0){
expert_add_info_format(pinfo, compression_header, &ei_saprfc_invalid_decompresssion, "Decompression of payload failed with return code %d (%s)", rt, val_to_str(rt, hf_decompress_return_code_vals, "Unknown"));
}
/* Check the length returned for the compression routine. If differs
* with the reported, use the actual one and add an expert info
* warning. */
if (uncompress_length != reported_length){
expert_add_info_format(pinfo, rl, &ei_saprfc_invalid_decompress_length, "The uncompressed payload length (%d) differs with the reported length (%d)", uncompress_length, reported_length);
}
/* TODO: Add the return code to the tree */
if (uncompress_length != 0){
/* Now re-setup the tvb buffer to have the new data */
next_tvb = tvb_new_real_data(decompressed_buffer, uncompress_length, uncompress_length);
tvb_set_child_real_data_tvbuff(tvb, next_tvb);
add_new_data_source(pinfo, next_tvb, "Uncompressed Table Data");
/* Add the payload subtree using the new tvb*/
proto_tree_add_item(tree, hf_saprfc_table_content, next_tvb, 0, -1, FALSE);
}
} else {
/* Add the payload subtree */
proto_tree_add_item(tree, hf_saprfc_table_content, tvb, offset, -1, FALSE);
}
/* TODO: Dissect saprfc_payload */
}
static void
dissect_saprfc_tables(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 offset, guint16 item_length){
guint8 *reassemble_buffer = NULL;
guint32 reassemble_length = 0, reassemble_offset = 0, next_item = 0, initial_offset = offset;
proto_item *table = NULL;
proto_tree *table_tree = NULL;
tvbuff_t *compressed_tvb = NULL;
/* Get the reassemble length */
reassemble_length = tvb_get_ntohl(tvb, offset + 4);
if (item_length > (reassemble_length - reassemble_offset)){
item_length = reassemble_length - reassemble_offset;
}
/* Allocate the buffer only in the scope of current packet */
reassemble_buffer = (guint8 *)wmem_alloc(wmem_packet_scope(), reassemble_length);
if (!reassemble_buffer){
return;
}
/* Perform the reassemble */
while (tvb_offset_exists(tvb, offset + item_length) && (reassemble_offset <= reassemble_length)){
tvb_memcpy(tvb, reassemble_buffer + reassemble_offset, offset, item_length);
offset += item_length; reassemble_offset += item_length;
/* If the table content continues, get the length and advance the offset */
next_item = tvb_get_ntohl(tvb, offset); offset+=4;
if (next_item == 0x03050305){
item_length = tvb_get_ntohs(tvb, offset); offset+=2;
if (item_length > (reassemble_length - reassemble_offset)){
item_length = reassemble_length - reassemble_offset;
}
/* If the table content doesn't continue, we've completed */
} else {
break;
}
}
/* Now re-setup the tvb buffer to have the new data */
compressed_tvb = tvb_new_real_data(reassemble_buffer, reassemble_length, reassemble_offset);
tvb_set_child_real_data_tvbuff(tvb, compressed_tvb);
add_new_data_source(pinfo, compressed_tvb, "Compressed Table Data");
/* Add the Table subtree */
table = proto_tree_add_item(tree, hf_saprfc_table, tvb, initial_offset, offset - initial_offset, FALSE);
table_tree = proto_item_add_subtree(table, ett_saprfc);
/* Now uncompress the table content */
dissect_saprfc_tables_compressed(compressed_tvb, pinfo, table_tree);
}
static void
dissect_saprfc_item(tvbuff_t *tvb, packet_info *pinfo, proto_item *item, proto_tree *item_value_tree, guint32 offset, guint8 item_id1, guint8 item_id2, guint8 item_id3, guint8 item_id4, guint16 item_length){
if (item_id1==0x00 && item_id2==0x0b && item_id3==0x01 && item_id4==0x02){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Dispatch call to", 1); offset+=item_length;
} else if (item_id1==0x02 && item_id2==0x03 && item_id3==0x02 && item_id4==0x01){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Parameter Name", 1); offset+=item_length;
} else if (item_id1==0x02 && item_id2==0x05 && item_id3==0x02 && item_id4==0x05){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Parameter Name", 1); offset+=item_length;
} else if (item_id1==0x02 && item_id2==0x05 && item_id3==0x02 && item_id4==0x01){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Parameter Name", 1); offset+=item_length;
} else if (item_id1==0x02 && item_id2==0x03 && item_id3==0x03 && item_id4==0x01){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Tables Name", 1); offset+=item_length;
} else if (item_id1==0x02 && item_id2==0x13 && item_id3==0x03 && item_id4==0x01){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Tables Name", 1); offset+=item_length;
} else if (item_id1==0x03 && item_id2==0x01 && item_id3==0x03 && item_id4==0x02){
check_length(pinfo, item_value_tree, 8, item_length, "Table length");
add_item_value_uint32(tvb, item, item_value_tree, hf_saprfc_item_value, offset, 4, "Fill Length"); offset+=4;
add_item_value_uint32(tvb, item, item_value_tree, hf_saprfc_item_value, offset, 4, "Width Length"); offset+=4;
} else if (item_id1==0x03 && item_id2==0x02 && item_id3==0x03 && item_id4==0x05){
offset += 4; /* Skip the first 4 bytes */
proto_tree_add_item(item_value_tree, hf_saprfc_table_length, tvb, offset, 4, FALSE); offset += 4;
proto_tree_add_none_format(item_value_tree, hf_saprfc_item_value, tvb, offset, item_length, "Table Content (first)");
proto_item_append_text(item, ", Table Content (first)"); offset+=item_length;
} else if (item_id1==0x03 && item_id2==0x05 && item_id3==0x03 && item_id4==0x05){
proto_tree_add_none_format(item_value_tree, hf_saprfc_item_value, tvb, offset, item_length, "Table Content");
proto_item_append_text(item, ", Table Content"); offset+=item_length;
} else if (item_id1==0x03 && item_id2==0x05 && item_id3==0x03 && item_id4==0x06){
proto_tree_add_none_format(item_value_tree, hf_saprfc_item_value, tvb, offset, item_length, "Table Content (last)");
proto_item_append_text(item, ", Table Content (last)"); offset+=item_length;
} else if (item_id1==0x03 && item_id2==0x06 && item_id3==0x03 && item_id4==0x01){
add_item_value_string(tvb, item, item_value_tree, hf_saprfc_item_value, offset, item_length, "Tables Name", 1); offset+=item_length;
} else if (item_id1==0x05 && item_id2==0x01 && item_id3==0x01 && item_id4==0x36){
add_item_value_uint8(tvb, item, item_value_tree, hf_saprfc_item_value, offset, 1, "#"); offset+=1;
add_item_value_hexstring(tvb, item, item_value_tree, hf_saprfc_item_value, offset, 16, "Root-id"); offset+=16;
add_item_value_hexstring(tvb, item, item_value_tree, hf_saprfc_item_value, offset, 16, "Conn-id"); offset+=16;
add_item_value_uint32(tvb, item, item_value_tree, hf_saprfc_item_value, offset, 4, "#"); offset+=4;
} else {
/* If the preference is set, report the item as unknown in the expert info */
if (global_saprfc_highlight_items){
expert_add_info_format(pinfo, item, &ei_saprfc_unknown_item, "The RFC item has a unknown type that is not dissected (%d %d %d %d)", item_id1, item_id2, item_id3, item_id4);
}
}
}
static void
dissect_saprfc_payload(tvbuff_t *tvb, packet_info *info, proto_tree *tree, proto_tree *parent_tree, guint32 offset){
guint8 item_id1, item_id2, item_id3, item_id4;
guint16 item_length, item_value_length;
proto_item *item = NULL, *item_value = NULL;
proto_tree *item_tree = NULL, *item_value_tree = NULL;
while (tvb_offset_exists(tvb, offset)){
item_id1 = item_id2 = item_id3 = item_id4 = 0;
item_length = item_value_length = 0;
/* Add the item subtree. We start with a item's length of 1, as we don't have yet the real size of the item */
item = proto_tree_add_item(tree, hf_saprfc_item, tvb, offset, 1, FALSE);
item_tree = proto_item_add_subtree(item, ett_saprfc);
/* Get the first identifier */
item_id1 = tvb_get_guint8(tvb, offset);
proto_tree_add_item(item_tree, hf_saprfc_item_id1, tvb, offset, 1, FALSE); offset+=1; item_length+=1;
proto_item_append_text(item, ": (0x%.2x)", item_id1);
/* Check if it's an End of message */
if (item_id1==0x0c){
item_value_length = 0;
/* Otherwise follow dissection */
} else {
item_id2 = tvb_get_guint8(tvb, offset);
proto_tree_add_item(item_tree, hf_saprfc_item_id2, tvb, offset, 1, FALSE); offset+=1; item_length+=1;
proto_item_append_text(item, ", (0x%.2x)", item_id2);
if ((item_id1!=0xff) && (item_id2!=0xff)) {
item_id3 = tvb_get_guint8(tvb, offset);
proto_tree_add_item(item_tree, hf_saprfc_item_id3, tvb, offset, 1, FALSE); offset+=1; item_length+=1;
proto_item_append_text(item, ", (0x%.2x)", item_id3);
item_id4 = tvb_get_guint8(tvb, offset);
proto_tree_add_item(item_tree, hf_saprfc_item_id4, tvb, offset, 1, FALSE); offset+=1; item_length+=1;
proto_item_append_text(item, ", (0x%.2x)", item_id4);
item_value_length = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(item_tree, hf_saprfc_item_length, tvb, offset, 2, FALSE); offset+=2; item_length+=2;
proto_item_append_text(item, ", Length=%d", item_value_length);
}
}
/* Now we have the real length of the item, set the proper size */
item_length += item_value_length;
proto_item_set_len(item, item_length);
/* If the item has content dissect it */
if (item_value_length>0){
item_value = proto_tree_add_item(item_tree, hf_saprfc_item_value, tvb, offset, item_value_length, FALSE);
item_value_tree = proto_item_add_subtree(item_value, ett_saprfc);
dissect_saprfc_item(tvb, info, item, item_value_tree, offset, item_id1, item_id2, item_id3, item_id4, item_value_length);
}
/* Also send the tables items for reassembling */
if (global_saprfc_table_reassembly && item_id1==0x03 && item_id2==0x02 && item_id3==0x03 && item_id4==0x05){
dissect_saprfc_tables(tvb, info, parent_tree, offset, item_value_length);
}
offset+= item_value_length;
}
}
static void
dissect_saprfc_rfcheader(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 offset){
proto_item *header = NULL, *header_unicode = NULL, *payload = NULL;
proto_tree *header_tree = NULL, *header_unicode_tree = NULL, *payload_tree = NULL;
if (tree){
/* Add the RFC header subtree */
header = proto_tree_add_item(tree, hf_saprfc_rfcheader, tvb, offset, 28, FALSE);
header_tree = proto_item_add_subtree(header, ett_saprfc);
/* TODO: Warning unused variable header_tree */
offset += 28;
/* Add the unicode header subtree */
header_unicode = proto_tree_add_item(tree, hf_saprfc_ucheader, tvb, offset, 11, FALSE);
header_unicode_tree = proto_item_add_subtree(header_unicode, ett_saprfc);
proto_tree_add_none_format(header_unicode_tree, hf_saprfc_ucheader_codepage, tvb, offset, 4, "Code Page: %s", tvb_bytes_to_ep_str(tvb, offset, 4)); offset+=4;
proto_tree_add_item(header_unicode_tree, hf_saprfc_ucheader_ce, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_unicode_tree, hf_saprfc_ucheader_et, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_unicode_tree, hf_saprfc_ucheader_cs, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_unicode_tree, hf_saprfc_ucheader_returncode, tvb, offset, 4, FALSE); offset+=4;
/* Check the payload length */
if (tvb_captured_length_remaining(tvb, offset) > 0){
/* Add the payload subtree */
payload = proto_tree_add_item(tree, hf_saprfc_payload, tvb, offset, -1, FALSE);
payload_tree = proto_item_add_subtree(payload, ett_saprfc);
/* Dissect the payload */
dissect_saprfc_payload(tvb, pinfo, payload_tree, tree, offset);
}
}
}
static void
dissect_saprfc_monitor_cmd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint8 version _U_, guint32 offset){
guint8 opcode;
opcode = tvb_get_guint8(tvb, offset);
col_append_fstr(pinfo->cinfo, COL_INFO, ", Command=%s", val_to_str(opcode, hf_saprfc_monitor_cmd_values, "Unknown"));
if (tree){
proto_tree_add_item(tree, hf_saprfc_monitor_cmd, tvb, offset, 1, FALSE); offset+=1;
proto_item_append_text(tree, ", Command=%s", val_to_str(opcode, hf_saprfc_monitor_cmd_values, "Unknown"));
}
switch (opcode){
};
}
static void
dissect_saprfc_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 offset){
guint8 version = 0, reqtype = 0;
proto_item *header = NULL, *info = NULL, *info2 = NULL, *info3 = NULL, *info4 = NULL, *reqtype2 = NULL, *params = NULL;
proto_tree *header_tree = NULL, *info_tree = NULL, *info2_tree = NULL, *info3_tree = NULL, *info4_tree = NULL, *reqtype2_tree = NULL, *params_tree;
version = tvb_get_guint8(tvb, offset);
reqtype = tvb_get_guint8(tvb, offset + 1);
col_append_fstr(pinfo->cinfo, COL_INFO, "APPC Version=%d, Request Type=%s", version, val_to_str(reqtype, hf_saprfc_header_reqtype_values, "Unknown"));
if (tree){
/* Add the APPC header subtree */
header = proto_tree_add_item(tree, hf_saprfc_header, tvb, offset, 28, FALSE);
header_tree = proto_item_add_subtree(header, ett_saprfc);
proto_item_append_text(header, ", Version=%d, Request Type=%s", version, val_to_str(reqtype, hf_saprfc_header_reqtype_values, "Unknown"));
proto_tree_add_item(header_tree, hf_saprfc_header_version, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_reqtype, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_protocol, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_mode, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_uid, tvb, offset, 2, FALSE); offset+=2;
proto_tree_add_item(header_tree, hf_saprfc_header_gw_id, tvb, offset, 2, FALSE); offset+=2;
proto_tree_add_item(header_tree, hf_saprfc_header_err_len, tvb, offset, 2, FALSE); offset+=2;
info2 = proto_tree_add_item(header_tree, hf_saprfc_header_info2, tvb, offset, 1, FALSE);
info2_tree = proto_item_add_subtree(info2, ett_saprfc);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_WITH_LONG_LU_NAME, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_WITH_LONG_HOSTADDR, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_GW_IMMEDIATE, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_GW_SNC_ACTIVE, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_GW_WAIT_LOOK_UP, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_SNC_INIT_PHASE, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_GW_STATELESS, tvb, offset, 1, FALSE);
proto_tree_add_item(info2_tree, hf_saprfc_header_info2_GW_NO_STATE_CHECK, tvb, offset, 1, FALSE);
offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_trace_level, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_time, tvb, offset, 4, FALSE); offset+=4;
info3 = proto_tree_add_item(header_tree, hf_saprfc_header_info3, tvb, offset, 1, FALSE);
info3_tree = proto_item_add_subtree(info3, ett_saprfc);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_WITH_CODE_PAGE, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_ASYNC_RFC, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_CANCEL_HARD, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_CANCEL_SOFT, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_WITH_GUI_TIMEOUT, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_TERMIO_ERROR, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_EXTENDED_INIT_OPTIONS, tvb, offset, 1, FALSE);
proto_tree_add_item(info3_tree, hf_saprfc_header_info3_GW_DIST_TRACE, tvb, offset, 1, FALSE);
offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_timeout, tvb, offset, 4, FALSE); offset+=4;
info4 = proto_tree_add_item(header_tree, hf_saprfc_header_info4, tvb, offset, 1, FALSE);
info4_tree = proto_item_add_subtree(info4, ett_saprfc);
proto_tree_add_item(info4_tree, hf_saprfc_header_info4_GW_WITH_DBG_CTL, tvb, offset, 1, FALSE);
offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_sequence_no, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(header_tree, hf_saprfc_header_sap_params_len, tvb, offset, 2, FALSE); offset+=2;
offset+=2; /* Skip 2 bytes here */
info = proto_tree_add_item(header_tree, hf_saprfc_header_info, tvb, offset, 1, FALSE);
info_tree = proto_item_add_subtree(info, ett_saprfc);
proto_tree_add_item(info_tree, hf_saprfc_header_info_SYNC_CPIC_FUNCTION, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_WITH_HOSTADDR, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_WITH_GW_SAP_PARAMS_HDR, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_CPIC_SYNC_REQ, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_WITH_ERR_INFO, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_DATA_WITH_TERM_OUTPUT, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_DATA_WITH_TERM_INPUT, tvb, offset, 1, FALSE);
proto_tree_add_item(info_tree, hf_saprfc_header_info_R3_CPIC_LOGIN_WITH_TERM, tvb, offset, 1, FALSE);
offset+=1;
reqtype2 = proto_tree_add_item(header_tree, hf_saprfc_header_reqtype2, tvb, offset, 1, FALSE);
reqtype2_tree = proto_item_add_subtree(reqtype2, ett_saprfc);
proto_tree_add_item(reqtype2_tree, hf_saprfc_header_reqtype2_F_V_INITIALIZE_CONVERSATION, tvb, offset, 1, FALSE);
proto_tree_add_item(reqtype2_tree, hf_saprfc_header_reqtype2_F_V_ALLOCATE, tvb, offset, 1, FALSE);
proto_tree_add_item(reqtype2_tree, hf_saprfc_header_reqtype2_F_V_SEND_DATA, tvb, offset, 1, FALSE);
proto_tree_add_item(reqtype2_tree, hf_saprfc_header_reqtype2_F_V_RECEIVE, tvb, offset, 1, FALSE);
proto_tree_add_item(reqtype2_tree, hf_saprfc_header_reqtype2_F_V_FLUSH, tvb, offset, 1, FALSE);
offset+=1;
proto_tree_add_item(header_tree, hf_saprfc_header_appc_rc, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(header_tree, hf_saprfc_header_sap_rc, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(header_tree, hf_saprfc_header_conversation_id, tvb, offset, 8, FALSE); offset+=8;
/* Dissect the NCPIC Parameters according to the request type */
params = proto_tree_add_item(header_tree, hf_saprfc_header_ncpic_parameters, tvb, offset, 28, FALSE);
params_tree = proto_item_add_subtree(params, ett_saprfc);
switch (reqtype){
case 0x01:{ /* F_INITIALIZE_CONVERSATION */
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_sdest, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_lu, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_tp, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_ctype, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_client_info, tvb, offset, 1, FALSE); offset+=1;
offset += 2; // Sum remaining bytes
break;
}
case 0x0f:{ /* F_SET_PARTNER_LU_NAME */
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_lu_name, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_lu_name_length, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_host_address, tvb, offset, 16, FALSE); offset+=16;
break;
}
case 0x17:{ /* F_SET_SECURITY_TYPE */
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_security_password, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(params_tree, hf_saprfc_header_ncpic_parameters_security_password_length, tvb, offset, 4, FALSE); offset+=4;
offset += 16; // Sum remaining bytes
break;
}
default:{
offset+=28;
}
};
proto_tree_add_item(header_tree, hf_saprfc_header_comm_idx, tvb, offset, 2, FALSE); offset+=2;
proto_tree_add_item(header_tree, hf_saprfc_header_conn_idx, tvb, offset, 2, FALSE); offset+=2;
}
}
static void
dissect_saprfc_internal(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint32 offset = 0;
proto_item *saprfc = NULL;
proto_tree *saprfc_tree = NULL;
if (tree) { /* we are being asked for details */
/* Add the main saprfc subtree */
saprfc = proto_tree_add_item(tree, proto_saprfc, tvb, 0, -1, FALSE);
saprfc_tree = proto_item_add_subtree(saprfc, ett_saprfc);
}
dissect_saprfc_rfcheader(tvb, pinfo, saprfc_tree, offset);
}
static void
dissect_saprfc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint32 offset = 0;
guint8 version = 0, req_type = 0;
proto_item *saprfc = NULL, *accept_info = NULL;
proto_tree *saprfc_tree = NULL, *accept_info_tree = NULL;
/* Add the protocol to the column */
col_add_str(pinfo->cinfo, COL_PROTOCOL, "SAPRFC");
/* Clear out stuff in the info column */
col_clear(pinfo->cinfo, COL_INFO);
/* Get version and request type values */
version = tvb_get_guint8(tvb, offset);
req_type = tvb_get_guint8(tvb, offset + 1);
/* Check if the message is valid or it is an APPC header */
// TODO: We need to find a way of performing this check, as wireshark is
// stateless seems to be difficult to keep track of the requests/responses.
if (version > 0x03){
if (tree){
/* Add the main saprfc subtree */
saprfc = proto_tree_add_item(tree, proto_saprfc, tvb, 0, -1, FALSE);
saprfc_tree = proto_item_add_subtree(saprfc, ett_saprfc);
}
dissect_saprfc_header(tvb, pinfo, saprfc_tree, offset);
return;
}
col_append_fstr(pinfo->cinfo, COL_INFO, "Version=%d, Request Type=%s", version, val_to_str(req_type, hf_saprfc_reqtype_values, "Unknown"));
if (tree) { /* we are being asked for details */
/* Add the main saprfc subtree */
saprfc = proto_tree_add_item(tree, proto_saprfc, tvb, 0, -1, FALSE);
saprfc_tree = proto_item_add_subtree(saprfc, ett_saprfc);
/* Dissect common fields */
proto_tree_add_item(saprfc_tree, hf_saprfc_version, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(saprfc_tree, hf_saprfc_reqtype, tvb, offset, 1, FALSE); offset+=1;
proto_item_append_text(saprfc_tree, ", Version=%d, Request Type=%s", version, val_to_str(req_type, hf_saprfc_reqtype_values, "Unknown"));
}
/* Dissect the remaining based on the version and request type */
switch (req_type){
case 0x03: /* GW_NORMAL_CLIENT */
case 0x0b:{ /* GW_REGISTER_TP */
proto_tree_add_item(saprfc_tree, hf_saprfc_address, tvb, offset, 4, FALSE); offset+=4;
offset+=4; // Skip 4 bytes here
proto_tree_add_item(saprfc_tree, hf_saprfc_service, tvb, offset, 10, FALSE); offset+=10;
proto_tree_add_item(saprfc_tree, hf_saprfc_codepage, tvb, offset, 4, FALSE); offset+=4;
offset+=6; // Skip 6 bytes here
proto_tree_add_item(saprfc_tree, hf_saprfc_lu, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(saprfc_tree, hf_saprfc_tp, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(saprfc_tree, hf_saprfc_conversation_id, tvb, offset, 8, FALSE); offset+=8;
proto_tree_add_item(saprfc_tree, hf_saprfc_appc_header_version, tvb, offset, 1, FALSE); offset+=1;
accept_info = proto_tree_add_item(saprfc_tree, hf_saprfc_accept_info, tvb, offset, 1, FALSE);
accept_info_tree = proto_item_add_subtree(accept_info, ett_saprfc);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_EINFO, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_PING, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_SNC, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_CONN_EINFO, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_CODE_PAGE, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_NIPING, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_EXTINITOPT, tvb, offset, 1, FALSE);
proto_tree_add_item(accept_info_tree, hf_saprfc_accept_info_GW_ACCEPT_DIST_TRACE, tvb, offset, 1, FALSE);
offset+=1;
proto_tree_add_item(saprfc_tree, hf_saprfc_idx, tvb, offset, 2, FALSE); offset+=2;
if (version == 0x03){
proto_tree_add_item(saprfc_tree, hf_saprfc_address6, tvb, offset, 16, FALSE); offset+=16;
}
proto_tree_add_item(saprfc_tree, hf_saprfc_rc, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(saprfc_tree, hf_saprfc_echo_data, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(saprfc_tree, hf_saprfc_filler, tvb, offset, 1, FALSE); offset+=1;
break;
}
case 0x09:{ /* GW_SEND_CMD */
dissect_saprfc_monitor_cmd(tvb, pinfo, saprfc_tree, version, 2);
break;
}
};
}
void
proto_register_saprfc(void)
{
static hf_register_info hf[] = {
{ &hf_saprfc_version,
{ "Version", "saprfc.version", FT_UINT8, BASE_DEC, NULL, 0x0, "SAP RFC Version", HFILL }},
{ &hf_saprfc_reqtype,
{ "Request Type", "saprfc.reqtype", FT_UINT8, BASE_HEX, hf_saprfc_reqtype_values, 0x0, "SAP RFC Request Type", HFILL }},
{ &hf_saprfc_address,
{ "IPv4 Address", "saprfc.addres", FT_IPv4, BASE_NONE, NULL, 0x0, "SAP RFC IPv4 Address", HFILL }},
{ &hf_saprfc_service,
{ "Service", "saprfc.service", FT_STRING, BASE_NONE, NULL, 0x0, "SAP RFC Service", HFILL }},
{ &hf_saprfc_codepage,
{ "Codepage", "saprfc.codepage", FT_STRING, BASE_NONE, NULL, 0x0, "SAP RFC Codepage", HFILL }},
{ &hf_saprfc_lu,
{ "LU", "saprfc.lu", FT_STRING, BASE_NONE, NULL, 0x0, "SAP RFC LU", HFILL }},
{ &hf_saprfc_tp,
{ "TP", "saprfc.tp", FT_STRING, BASE_NONE, NULL, 0x0, "SAP RFC TP", HFILL }},
{ &hf_saprfc_conversation_id,
{ "Conversation ID", "saprfc.conversation_id", FT_STRING, BASE_NONE, NULL, 0x0, "SAP RFC Conversation ID", HFILL }},
{ &hf_saprfc_appc_header_version,
{ "APPC Header Version", "saprfc.appc_hd_version", FT_UINT8, BASE_DEC, NULL, 0x0, "SAP RFC APPC Header Version", HFILL }},
{ &hf_saprfc_accept_info,
{ "Accept Info Flags", "saprfc.accept_info", FT_UINT8, BASE_HEX, NULL, 0x0, "SAP RFC Accept Info Flags", HFILL }},
{ &hf_saprfc_accept_info_EINFO,
{ "Accept Info Flag EINFO", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_EINFO, "SAP RFC Accept Info Flag EINFO", HFILL }},
{ &hf_saprfc_accept_info_PING,
{ "Accept Info Flag PING", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_PING, "SAP RFC Accept Info Flag PING", HFILL }},
{ &hf_saprfc_accept_info_SNC,
{ "Accept Info Flag SNC", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_SNC, "SAP RFC Accept Info Flag SNC", HFILL }},
{ &hf_saprfc_accept_info_CONN_EINFO,
{ "Accept Info Flag CONN_EINFO", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_CONN_EINFO, "SAP RFC Accept Info Flag CONN_EINFO", HFILL }},
{ &hf_saprfc_accept_info_CODE_PAGE,
{ "Accept Info Flag CODE_PAGE", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_CODE_PAGE, "SAP RFC Accept Info Flag CODE_PAGE", HFILL }},
{ &hf_saprfc_accept_info_NIPING,
{ "Accept Info Flag NIPING", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_NIPING, "SAP RFC Accept Info Flag NIPING", HFILL }},
{ &hf_saprfc_accept_info_EXTINITOPT,
{ "Accept Info Flag EXTINITOPT", "saprfc.accept_info.EINFO", FT_BOOLEAN, 8, NULL, SAPRFC_ACCEPT_INFO_EXTINITOPT, "SAP RFC Accept Info Flag EXTINITOPT", HFILL }},