/* packet-x2ap.c * Routines for dissecting Evolved Universal Terrestrial Radio Access Network (EUTRAN); * X2 Application Protocol (X2AP); * 3GPP TS 36.423 packet dissection * Copyright 2007-2010, Anders Broman * * Wireshark - 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Ref: * 3GPP TS 36.423 V9.2.0 (2010-03) */ #include "config.h" #include #include #include #include #include "packet-per.h" #include "packet-e212.h" #include "packet-lte-rrc.h" #ifdef _MSC_VER /* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */ #pragma warning(disable:4146) #endif #define PNAME "EUTRAN X2 Application Protocol (X2AP)" #define PSNAME "X2AP" #define PFNAME "x2ap" void proto_register_x2ap(void); /* Dissector will use SCTP PPID 27 or SCTP port. IANA assigned port = 36422 */ #define SCTP_PORT_X2AP 36422 #include "packet-x2ap-val.h" /* Initialize the protocol and registered fields */ static int proto_x2ap = -1; static int hf_x2ap_transportLayerAddressIPv4 = -1; static int hf_x2ap_transportLayerAddressIPv6 = -1; #include "packet-x2ap-hf.c" /* Initialize the subtree pointers */ static int ett_x2ap = -1; static int ett_x2ap_TransportLayerAddress = -1; #include "packet-x2ap-ett.c" /* Global variables */ static guint32 ProcedureCode; static guint32 ProtocolIE_ID; static guint gbl_x2apSctpPort=SCTP_PORT_X2AP; /* Dissector tables */ static dissector_table_t x2ap_ies_dissector_table; static dissector_table_t x2ap_extension_dissector_table; static dissector_table_t x2ap_proc_imsg_dissector_table; static dissector_table_t x2ap_proc_sout_dissector_table; static dissector_table_t x2ap_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 *); void proto_reg_handoff_x2ap(void); static dissector_handle_t x2ap_handle; #include "packet-x2ap-fn.c" static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(x2ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? 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(x2ap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(x2ap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(x2ap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(x2ap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_x2ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data) { proto_item *x2ap_item = NULL; proto_tree *x2ap_tree = NULL; /* make entry in the Protocol column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "X2AP"); /* create the x2ap protocol tree */ x2ap_item = proto_tree_add_item(tree, proto_x2ap, tvb, 0, -1, ENC_NA); x2ap_tree = proto_item_add_subtree(x2ap_item, ett_x2ap); return dissect_X2AP_PDU_PDU(tvb, pinfo, x2ap_tree, data); } /*--- proto_register_x2ap -------------------------------------------*/ void proto_register_x2ap(void) { /* List of fields */ static hf_register_info hf[] = { { &hf_x2ap_transportLayerAddressIPv4, { "transportLayerAddress(IPv4)", "x2ap.transportLayerAddressIPv4", FT_IPv4, BASE_NONE, NULL, 0, NULL, HFILL }}, { &hf_x2ap_transportLayerAddressIPv6, { "transportLayerAddress(IPv6)", "x2ap.transportLayerAddressIPv6", FT_IPv6, BASE_NONE, NULL, 0, NULL, HFILL }}, #include "packet-x2ap-hfarr.c" }; /* List of subtrees */ static gint *ett[] = { &ett_x2ap, &ett_x2ap_TransportLayerAddress, #include "packet-x2ap-ettarr.c" }; module_t *x2ap_module; /* Register protocol */ proto_x2ap = proto_register_protocol(PNAME, PSNAME, PFNAME); /* Register fields and subtrees */ proto_register_field_array(proto_x2ap, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); /* Register dissector */ x2ap_handle = register_dissector("x2ap", dissect_x2ap, proto_x2ap); /* Register dissector tables */ x2ap_ies_dissector_table = register_dissector_table("x2ap.ies", "X2AP-PROTOCOL-IES", proto_x2ap, FT_UINT32, BASE_DEC); x2ap_extension_dissector_table = register_dissector_table("x2ap.extension", "X2AP-PROTOCOL-EXTENSION", proto_x2ap, FT_UINT32, BASE_DEC); x2ap_proc_imsg_dissector_table = register_dissector_table("x2ap.proc.imsg", "X2AP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_x2ap, FT_UINT32, BASE_DEC); x2ap_proc_sout_dissector_table = register_dissector_table("x2ap.proc.sout", "X2AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_x2ap, FT_UINT32, BASE_DEC); x2ap_proc_uout_dissector_table = register_dissector_table("x2ap.proc.uout", "X2AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_x2ap, FT_UINT32, BASE_DEC); /* Register configuration options for ports */ x2ap_module = prefs_register_protocol(proto_x2ap, proto_reg_handoff_x2ap); prefs_register_uint_preference(x2ap_module, "sctp.port", "X2AP SCTP Port", "Set the SCTP port for X2AP messages", 10, &gbl_x2apSctpPort); } /*--- proto_reg_handoff_x2ap ---------------------------------------*/ void proto_reg_handoff_x2ap(void) { static gboolean Initialized=FALSE; static guint SctpPort; if (!Initialized) { dissector_add_for_decode_as("sctp.port", x2ap_handle); dissector_add_uint("sctp.ppi", X2AP_PAYLOAD_PROTOCOL_ID, x2ap_handle); Initialized=TRUE; #include "packet-x2ap-dis-tab.c" } else { if (SctpPort != 0) { dissector_delete_uint("sctp.port", SctpPort, x2ap_handle); } } SctpPort=gbl_x2apSctpPort; if (SctpPort != 0) { dissector_add_uint("sctp.port", SctpPort, x2ap_handle); } }