osmith
/
wireshark
forked from osmocom/wireshark
1
0
Fork 0
Code Pull Requests Releases Wiki Activity
wireshark/epan/dissectors/asn1/nbap/packet-nbap-template.c

546 lines
18 KiB
C
Raw Blame History

/* packet-nbap-template.c
* Routines for UMTS Node B Application Part(NBAP) packet dissection
* Copyright 2005, 2009 Anders Broman <anders.broman@ericsson.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Ref: 3GPP TS 25.433 version 6.6.0 Release 6
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/sctpppids.h>
#include <epan/asn1.h>
#include <epan/conversation.h>
#include <epan/expert.h>
#include <epan/prefs.h>
#include <epan/uat.h>
#include "packet-per.h"
#include "packet-isup.h"
#include "packet-umts_fp.h"
#include "packet-umts_mac.h"
#include "packet-rrc.h"
#include "packet-rlc.h"
#include "packet-nbap.h"
#ifdef _MSC_VER
/* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
#pragma warning(disable:4146)
#endif
#define PNAME "UTRAN Iub interface NBAP signalling"
#define PSNAME "NBAP"
#define PFNAME "nbap"
#define NBAP_IGNORE_PORT 255
/* Debug */
#if 0
#define nbap_debug(...) g_warning(__VA_ARGS__)
#else
#define nbap_debug(...)
#endif
void proto_register_nbap(void);
void proto_reg_handoff_nbap(void);
/* Global variables */
static dissector_handle_t fp_handle;
static guint32 transportLayerAddress_ipv4;
static guint16 BindingID_port;
static guint32 com_context_id;
static int cfn;
#include "packet-nbap-val.h"
/* Initialize the protocol and registered fields */
static int proto_nbap = -1;
static int hf_nbap_transportLayerAddress_ipv4 = -1;
static int hf_nbap_transportLayerAddress_ipv6 = -1;
static int hf_nbap_transportLayerAddress_nsap = -1;
#include "packet-nbap-hf.c"
/* Initialize the subtree pointers */
static int ett_nbap = -1;
static int ett_nbap_TransportLayerAddress = -1;
static int ett_nbap_TransportLayerAddress_nsap = -1;
static int ett_nbap_ib_sg_data = -1;
#include "packet-nbap-ett.c"
static expert_field ei_nbap_no_find_comm_context_id = EI_INIT;
static expert_field ei_nbap_no_find_port_info = EI_INIT;
static expert_field ei_nbap_no_set_comm_context_id = EI_INIT;
static expert_field ei_nbap_hsdsch_entity_not_specified = EI_INIT;
extern int proto_fp;
static dissector_handle_t nbap_handle;
/*
* Structure to build information needed to dissect the FP flow beeing set up.
*/
struct _nbap_msg_info_for_fp
{
guint32 ProcedureCode;
guint32 ddMode;
gboolean is_uplink;
gint channel; /* see definitions in packet-umts_fp.h Channel types */
guint8 dch_crc_present; /* 0=No, 1=Yes, 2=Unknown */
};
typedef struct
{
gint num_dch_in_flow;
gint next_dch;
gint num_ul_chans;
gint ul_chan_tf_size[MAX_FP_CHANS];
gint ul_chan_num_tbs[MAX_FP_CHANS];
gint num_dl_chans;
gint dl_chan_tf_size[MAX_FP_CHANS];
gint dl_chan_num_tbs[MAX_FP_CHANS];
}nbap_dch_channel_info_t;
nbap_dch_channel_info_t nbap_dch_chnl_info[256];
/* Struct to collect E-DCH data in a packet
* As the address data comes before the ddi entries
* we save the address to be able to find the conversation and update the
* conversation data.
*/
typedef struct
{
address crnc_address;
guint16 crnc_port;
gint no_ddi_entries;
guint8 edch_ddi[MAX_EDCH_DDIS];
guint edch_macd_pdu_size[MAX_EDCH_DDIS];
guint8 edch_type; /* 1 means T2 */
guint8 lchId[MAX_EDCH_DDIS]; /*Logical channel ids.*/
} nbap_edch_channel_info_t;
nbap_edch_channel_info_t nbap_edch_channel_info[maxNrOfEDCHMACdFlows];
typedef struct
{
guint32 crnc_address;
guint16 crnc_port[maxNrOfEDCHMACdFlows];
} nbap_edch_port_info_t;
typedef struct
{
address crnc_address;
guint16 crnc_port;
enum fp_rlc_mode rlc_mode;
guint32 hsdsch_physical_layer_category;
guint8 entity; /* "ns" means type 1 and "ehs" means type 2, type 3 == ?*/
} nbap_hsdsch_channel_info_t;
nbap_hsdsch_channel_info_t nbap_hsdsch_channel_info[maxNrOfMACdFlows];
typedef struct
{
address crnc_address;
guint16 crnc_port;
enum fp_rlc_mode rlc_mode;
} nbap_common_channel_info_t;
nbap_common_channel_info_t nbap_common_channel_info[maxNrOfMACdFlows]; /*TODO: Fix this!*/
gint g_num_dch_in_flow;
/* maxNrOfTFs INTEGER ::= 32 */
gint g_dchs_in_flow_list[maxNrOfTFs];
gint hsdsch_macdflow_ids[maxNrOfMACdFlows];
gint hrnti;
guint node_b_com_context_id;
static wmem_tree_t* edch_flow_port_map = NULL;
/*Stuff for mapping NodeB-Comuncation Context ID to CRNC Communication Context ID*/
typedef struct com_ctxt_{
/*guint nodeb_context;*/
guint crnc_context;
guint frame_num;
}nbap_com_context_id_t;
gboolean crcn_context_present = FALSE;
static wmem_tree_t* com_context_map;
struct _nbap_msg_info_for_fp g_nbap_msg_info_for_fp;
/* Global variables */
static guint32 ProcedureCode;
static guint32 ProtocolIE_ID;
static guint32 ddMode;
static const gchar *ProcedureID;
static guint32 t_dch_id, dch_id, prev_dch_id, commonphysicalchannelid, e_dch_macdflow_id, hsdsch_macdflow_id=3,
e_dch_ddi_value,logical_channel_id,common_macdflow_id;
static guint32 MACdPDU_Size, commontransportchannelid;
static guint num_items;
static gint paging_indications;
static guint32 ib_type, segment_type;
enum TransportFormatSet_type_enum
{
NBAP_DCH_UL,
NBAP_DCH_DL,
NBAP_CPCH,
NBAP_FACH,
NBAP_PCH
};
enum TransportFormatSet_type_enum transportFormatSet_type;
/* This table is used externally from FP, MAC and such, TODO: merge this with
* lch_contents[] */
guint8 lchId_type_table[]= {
MAC_CONTENT_UNKNOWN, /* Shouldn't happen*/
MAC_CONTENT_DCCH, /* 1 to 4 SRB => DCCH*/
MAC_CONTENT_DCCH,
MAC_CONTENT_DCCH,
MAC_CONTENT_DCCH,
MAC_CONTENT_CS_DTCH, /* 5 to 7 Conv CS speech => ?*/
MAC_CONTENT_CS_DTCH,
MAC_CONTENT_CS_DTCH,
MAC_CONTENT_DCCH, /* 8 SRB => DCCH*/
MAC_CONTENT_PS_DTCH, /* 9 maps to DTCH*/
MAC_CONTENT_UNKNOWN, /* 10 Conv CS unknown*/
MAC_CONTENT_PS_DTCH, /* 11 Interactive PS => DTCH*/
MAC_CONTENT_PS_DTCH, /* 12 Streaming PS => DTCH*/
MAC_CONTENT_CS_DTCH, /* 13 Streaming CS*/
MAC_CONTENT_PS_DTCH, /* 14 Interactive PS => DTCH*/
MAC_CONTENT_CCCH /* This is CCCH? */
};
/* Mapping logicalchannel id to RLC_MODE */
guint8 lchId_rlc_map[] = {
0,
RLC_UM, /* Logical channel id = 1 is SRB1 which uses RLC_UM*/
RLC_AM,
RLC_AM,
RLC_AM,
RLC_TM, /*5 to 7 Conv CS Speech*/
RLC_TM,
RLC_TM, /*...*/
RLC_AM,
RLC_AM,
RLC_AM,
RLC_AM,
RLC_AM,
RLC_AM,
RLC_AM,
RLC_AM, /* This is CCCH which is UM?, probably not */
};
/* Preference variables */
/* Array with preference variables for easy looping, TODO: merge this with
* lchId_type_table[] */
static int lch_contents[16] = {
MAC_CONTENT_DCCH,
MAC_CONTENT_DCCH,
MAC_CONTENT_DCCH,
MAC_CONTENT_DCCH,
MAC_CONTENT_CS_DTCH,
MAC_CONTENT_CS_DTCH,
MAC_CONTENT_CS_DTCH,
MAC_CONTENT_DCCH,
MAC_CONTENT_PS_DTCH,
MAC_CONTENT_UNKNOWN,
MAC_CONTENT_PS_DTCH,
MAC_CONTENT_PS_DTCH,
MAC_CONTENT_CS_DTCH,
MAC_CONTENT_PS_DTCH,
MAC_CONTENT_CCCH,
MAC_CONTENT_DCCH
};
static const enum_val_t content_types[] = {
{"MAC_CONTENT_UNKNOWN", "MAC_CONTENT_UNKNOWN", MAC_CONTENT_UNKNOWN},
{"MAC_CONTENT_DCCH", "MAC_CONTENT_DCCH", MAC_CONTENT_DCCH},
{"MAC_CONTENT_PS_DTCH", "MAC_CONTENT_PS_DTCH", MAC_CONTENT_PS_DTCH},
{"MAC_CONTENT_CS_DTCH", "MAC_CONTENT_CS_DTCH", MAC_CONTENT_CS_DTCH},
{"MAC_CONTENT_CCCH", "MAC_CONTENT_CCCH", MAC_CONTENT_CCCH},
{NULL, NULL, -1}};
typedef struct {
const char *name;
const char *title;
const char *description;
} preference_strings;
/* This is used when registering preferences, name, title, description */
static const preference_strings ch_strings[] = {
{"lch1_content", "Logical Channel 1 Content", "foo"},
{"lch2_content", "Logical Channel 2 Content", "foo"},
{"lch3_content", "Logical Channel 3 Content", "foo"},
{"lch4_content", "Logical Channel 4 Content", "foo"},
{"lch5_content", "Logical Channel 5 Content", "foo"},
{"lch6_content", "Logical Channel 6 Content", "foo"},
{"lch7_content", "Logical Channel 7 Content", "foo"},
{"lch8_content", "Logical Channel 8 Content", "foo"},
{"lch9_content", "Logical Channel 9 Content", "foo"},
{"lch10_content", "Logical Channel 10 Content", "foo"},
{"lch11_content", "Logical Channel 11 Content", "foo"},
{"lch12_content", "Logical Channel 12 Content", "foo"},
{"lch13_content", "Logical Channel 13 Content", "foo"},
{"lch14_content", "Logical Channel 14 Content", "foo"},
{"lch15_content", "Logical Channel 15 Content", "foo"},
{"lch16_content", "Logical Channel 16 Content", "foo"}};
/* Dissector tables */
static dissector_table_t nbap_ies_dissector_table;
static dissector_table_t nbap_extension_dissector_table;
static dissector_table_t nbap_proc_imsg_dissector_table;
static dissector_table_t nbap_proc_sout_dissector_table;
static dissector_table_t nbap_proc_uout_dissector_table;
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
/*Easy way to add hsdhsch binds for corner cases*/
static void add_hsdsch_bind(packet_info * pinfo);
#include "packet-nbap-fn.c"
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(nbap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(nbap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if (!ProcedureID) return 0;
return (dissector_try_string(nbap_proc_imsg_dissector_table, ProcedureID, tvb, pinfo, tree, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if (!ProcedureID) return 0;
return (dissector_try_string(nbap_proc_sout_dissector_table, ProcedureID, tvb, pinfo, tree, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if (!ProcedureID) return 0;
return (dissector_try_string(nbap_proc_uout_dissector_table, ProcedureID, tvb, pinfo, tree, NULL)) ? tvb_captured_length(tvb) : 0;
}
static void add_hsdsch_bind(packet_info *pinfo){
address null_addr;
conversation_t *conversation = NULL;
umts_fp_conversation_info_t *umts_fp_conversation_info;
guint32 i;
if (pinfo->fd->flags.visited){
return;
}
/* Set port to zero use that as an indication of whether we have data or not */
clear_address(&null_addr);
for (i = 0; i < maxNrOfMACdFlows; i++) {
if (nbap_hsdsch_channel_info[i].crnc_port != 0){
conversation = find_conversation(pinfo->num, &(nbap_hsdsch_channel_info[i].crnc_address), &null_addr,
PT_UDP,
nbap_hsdsch_channel_info[i].crnc_port, 0, NO_ADDR_B);
if (conversation == NULL) {
/* It's not part of any conversation - create a new one. */
conversation = conversation_new(pinfo->num, &(nbap_hsdsch_channel_info[i].crnc_address),
&null_addr, PT_UDP, nbap_hsdsch_channel_info[i].crnc_port,
0, NO_ADDR2|NO_PORT2);
/* Set dissector */
conversation_set_dissector(conversation, fp_handle);
if(pinfo->link_dir==P2P_DIR_DL){
umts_fp_conversation_info = wmem_new0(wmem_file_scope(), umts_fp_conversation_info_t);
/* Fill in the HSDSCH relevant data */
umts_fp_conversation_info->iface_type = IuB_Interface;
umts_fp_conversation_info->division = Division_FDD;
umts_fp_conversation_info->channel = CHANNEL_HSDSCH;
umts_fp_conversation_info->dl_frame_number = 0;
umts_fp_conversation_info->ul_frame_number = pinfo->num;
copy_address_wmem(wmem_file_scope(), &(umts_fp_conversation_info->crnc_address), &nbap_hsdsch_channel_info[i].crnc_address);
umts_fp_conversation_info->crnc_port = nbap_hsdsch_channel_info[i].crnc_port;
/*Added june 3, normally just the iterator variable*/
umts_fp_conversation_info->hsdsch_macdflow_id = i ; /*hsdsch_macdflow_ids[i];*/ /* hsdsch_macdflow_id;*/
/* Cheat and use the DCH entries */
umts_fp_conversation_info->num_dch_in_flow++;
umts_fp_conversation_info->dchs_in_flow_list[umts_fp_conversation_info->num_dch_in_flow -1] = i;
/*XXX: Is this craziness, what is physical_layer? */
if(nbap_hsdsch_channel_info[i].entity == entity_not_specified ){
/*Error*/
expert_add_info(pinfo, NULL, &ei_nbap_hsdsch_entity_not_specified);
}else{
umts_fp_conversation_info->hsdsch_entity = (enum fp_hsdsch_entity)nbap_hsdsch_channel_info[i].entity;
}
umts_fp_conversation_info->rlc_mode = nbap_hsdsch_channel_info[i].rlc_mode;
set_umts_fp_conv_data(conversation, umts_fp_conversation_info);
}
}
}
}
}
static void nbap_init(void){
guint8 i;
/*Initialize*/
com_context_map = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
/*Initialize structure for muxed flow indication*/
edch_flow_port_map = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
for (i = 0; i < 15; i++) {
lchId_type_table[i+1] = lch_contents[i];
}
}
static int
dissect_nbap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
proto_item *nbap_item = NULL;
proto_tree *nbap_tree = NULL;
int i;
/* make entry in the Protocol column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "NBAP");
/* create the nbap protocol tree */
nbap_item = proto_tree_add_item(tree, proto_nbap, tvb, 0, -1, ENC_NA);
nbap_tree = proto_item_add_subtree(nbap_item, ett_nbap);
/*Do a little cleanup just as a precaution*/
for (i = 0; i < maxNrOfMACdFlows; i++) {
nbap_hsdsch_channel_info[i].entity = hs;
}
return dissect_NBAP_PDU_PDU(tvb, pinfo, nbap_tree, data);
}
/*--- proto_register_nbap -------------------------------------------*/
void proto_register_nbap(void)
{
module_t *nbap_module;
guint8 i;
/* List of fields */
static hf_register_info hf[] = {
{ &hf_nbap_transportLayerAddress_ipv4,
{ "transportLayerAddress IPv4", "nbap.transportLayerAddress_ipv4",
FT_IPv4, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_nbap_transportLayerAddress_ipv6,
{ "transportLayerAddress IPv6", "nbap.transportLayerAddress_ipv6",
FT_IPv6, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_nbap_transportLayerAddress_nsap,
{ "transportLayerAddress NSAP", "nbap.transportLayerAddress_NSAP",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
#include "packet-nbap-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_nbap,
&ett_nbap_TransportLayerAddress,
&ett_nbap_TransportLayerAddress_nsap,
&ett_nbap_ib_sg_data,
#include "packet-nbap-ettarr.c"
};
static ei_register_info ei[] = {
{ &ei_nbap_no_set_comm_context_id, { "nbap.no_set_comm_context_id", PI_MALFORMED, PI_WARN, "Couldn't not set Communication Context-ID, fragments over reconfigured channels might fail", EXPFILL }},
{ &ei_nbap_no_find_comm_context_id, { "nbap.no_find_comm_context_id", PI_MALFORMED, PI_WARN, "Couldn't not find Communication Context-ID, unable to reconfigure this E-DCH flow.", EXPFILL }},
{ &ei_nbap_no_find_port_info, { "nbap.no_find_port_info", PI_MALFORMED, PI_WARN, "Couldn't not find port information for reconfigured E-DCH flow, unable to reconfigure", EXPFILL }},
{ &ei_nbap_hsdsch_entity_not_specified, { "nbap.hsdsch_entity_not_specified", PI_MALFORMED,PI_ERROR, "HSDSCH Entity not specified!", EXPFILL }},
};
expert_module_t* expert_nbap;
/* Register protocol */
proto_nbap = proto_register_protocol(PNAME, PSNAME, PFNAME);
/* Register fields and subtrees */
proto_register_field_array(proto_nbap, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_nbap = expert_register_protocol(proto_nbap);
expert_register_field_array(expert_nbap, ei, array_length(ei));
/* Register dissector */
nbap_handle = register_dissector("nbap", dissect_nbap, proto_nbap);
nbap_module = prefs_register_protocol(proto_nbap, NULL);
/* Register preferences for mapping logical channel IDs to MAC content types. */
for (i = 0; i < 16; i++) {
prefs_register_enum_preference(nbap_module, ch_strings[i].name, ch_strings[i].title, ch_strings[i].description, &lch_contents[i], content_types, FALSE);
}
/* Register dissector tables */
nbap_ies_dissector_table = register_dissector_table("nbap.ies", "NBAP-PROTOCOL-IES", proto_nbap, FT_UINT32, BASE_DEC);
nbap_extension_dissector_table = register_dissector_table("nbap.extension", "NBAP-PROTOCOL-EXTENSION", proto_nbap, FT_UINT32, BASE_DEC);
nbap_proc_imsg_dissector_table = register_dissector_table("nbap.proc.imsg", "NBAP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_nbap, FT_STRING, BASE_NONE);
nbap_proc_sout_dissector_table = register_dissector_table("nbap.proc.sout", "NBAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_nbap, FT_STRING, BASE_NONE);
nbap_proc_uout_dissector_table = register_dissector_table("nbap.proc.uout", "NBAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_nbap, FT_STRING, BASE_NONE);
register_init_routine(nbap_init);
}
/*
* #define EXTRA_PPI 1
*/
/*--- proto_reg_handoff_nbap ---------------------------------------*/
void
proto_reg_handoff_nbap(void)
{
fp_handle = find_dissector("fp");
dissector_add_uint("sctp.ppi", NBAP_PAYLOAD_PROTOCOL_ID, nbap_handle);
#ifdef EXTRA_PPI
dissector_add_uint("sctp.ppi", 17, nbap_handle);
#endif
dissector_add_for_decode_as("sctp.port", nbap_handle);
#include "packet-nbap-dis-tab.c"
}
View Git Blame Copy Permalink