epan/dissectors/asn1/pcap/packet-pcap-template.c

   1 /* packet-pcap.c
   2  * Routines for UTRAN Iupc interface Positioning Calculation Application Part (PCAP) packet dissection
   3  *
   4  * Copyright 2008, Anders Broman <anders.broman@ericsson.com>
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * SPDX-License-Identifier: GPL-2.0-or-later
  11  *
  12  * Based on the RANAP dissector
  13  *
  14  * References: ETSI TS 125 453 V17.0.0 (2022-04)
  15  */
  16
  17 #include "config.h"
  18
  19 #include <epan/packet.h>
  20 #include <epan/prefs.h>
  21 #include <wsutil/array.h>
  22
  23 #include <epan/strutil.h>
  24 #include <epan/asn1.h>
  25
  26 #include "packet-ber.h"
  27 #include "packet-per.h"
  28 #include "packet-sccp.h"
  29
  30 #ifdef _MSC_VER
  31 /* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
  32 #pragma warning(disable:4146)
  33 #endif
  34
  35 #define PNAME  "UTRAN Iupc interface Positioning Calculation Application Part (PCAP)"
  36 #define PSNAME "PCAP"
  37 #define PFNAME "pcap"
  38
  39 #define MAX_SSN 254
  40
  41 void proto_register_pcap(void);
  42 void proto_reg_handoff_pcap(void);
  43
  44 #include "packet-pcap-val.h"
  45
  46 static dissector_handle_t pcap_handle;
  47
  48 /* Initialize the protocol and registered fields */
  49 static int proto_pcap;
  50
  51 #include "packet-pcap-hf.c"
  52
  53 /* Initialize the subtree pointers */
  54 static int ett_pcap;
  55
  56 #include "packet-pcap-ett.c"
  57
  58 /* Global variables */
  59 static uint32_t ProcedureCode;
  60 static uint32_t ProtocolIE_ID;
  61 /*static uint32_t ProtocolExtensionID;*/
  62
  63 /* Dissector tables */
  64 static dissector_table_t pcap_ies_dissector_table;
  65 static dissector_table_t pcap_ies_p1_dissector_table;
  66 static dissector_table_t pcap_ies_p2_dissector_table;
  67 static dissector_table_t pcap_extension_dissector_table;
  68 static dissector_table_t pcap_proc_imsg_dissector_table;
  69 static dissector_table_t pcap_proc_sout_dissector_table;
  70 static dissector_table_t pcap_proc_uout_dissector_table;
  71 static dissector_table_t pcap_proc_out_dissector_table;
  72
  73 static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
  74 static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
  75 static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
  76 static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
  77 static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
  78 static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
  79
  80 #include "packet-pcap-fn.c"
  81
  82 static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
  83 {
  84   return (dissector_try_uint(pcap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
  85 }
  86
  87 static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
  88 {
  89   return (dissector_try_uint(pcap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
  90 }
  91
  92 static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
  93 {
  94   return (dissector_try_uint(pcap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
  95 }
  96
  97 static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
  98 {
  99   return (dissector_try_uint(pcap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
 100 }
 101
 102 static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
 103 {
 104   return (dissector_try_uint(pcap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
 105 }
 106
 107 static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
 108 {
 109   return (dissector_try_uint(pcap_proc_out_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
 110 }
 111
 112 static int
 113 dissect_pcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
 114 {
 115         proto_item      *pcap_item = NULL;
 116         proto_tree      *pcap_tree = NULL;
 117
 118         /* make entry in the Protocol column on summary display */
 119         col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCAP");
 120
 121         /* create the pcap protocol tree */
 122         pcap_item = proto_tree_add_item(tree, proto_pcap, tvb, 0, -1, ENC_NA);
 123         pcap_tree = proto_item_add_subtree(pcap_item, ett_pcap);
 124
 125         dissect_PCAP_PDU_PDU(tvb, pinfo, pcap_tree, NULL);
 126         return tvb_captured_length(tvb);
 127 }
 128
 129 /*--- proto_reg_handoff_pcap ---------------------------------------*/
 130 void
 131 proto_reg_handoff_pcap(void)
 132 {
 133 #include "packet-pcap-dis-tab.c"
 134     dissector_add_for_decode_as_with_preference("sccp.ssn", pcap_handle);
 135 }
 136
 137 /*--- proto_register_pcap -------------------------------------------*/
 138 void proto_register_pcap(void) {
 139
 140   /* List of fields */
 141
 142   static hf_register_info hf[] = {
 143
 144 #include "packet-pcap-hfarr.c"
 145   };
 146
 147   /* List of subtrees */
 148   static int *ett[] = {
 149                   &ett_pcap,
 150 #include "packet-pcap-ettarr.c"
 151   };
 152
 153   /* module_t *pcap_module; */
 154
 155   /* Register protocol */
 156   proto_pcap = proto_register_protocol(PNAME, PSNAME, PFNAME);
 157   /* Register fields and subtrees */
 158   proto_register_field_array(proto_pcap, hf, array_length(hf));
 159   proto_register_subtree_array(ett, array_length(ett));
 160
 161   /* pcap_module = prefs_register_protocol(proto_pcap, NULL); */
 162
 163   /* Register dissector */
 164   pcap_handle = register_dissector("pcap", dissect_pcap, proto_pcap);
 165
 166   /* Register dissector tables */
 167   pcap_ies_dissector_table = register_dissector_table("pcap.ies", "PCAP-PROTOCOL-IES", proto_pcap, FT_UINT32, BASE_DEC);
 168   pcap_ies_p1_dissector_table = register_dissector_table("pcap.ies.pair.first", "PCAP-PROTOCOL-IES-PAIR FirstValue", proto_pcap, FT_UINT32, BASE_DEC);
 169   pcap_ies_p2_dissector_table = register_dissector_table("pcap.ies.pair.second", "PCAP-PROTOCOL-IES-PAIR SecondValue", proto_pcap, FT_UINT32, BASE_DEC);
 170   pcap_extension_dissector_table = register_dissector_table("pcap.extension", "PCAP-PROTOCOL-EXTENSION", proto_pcap, FT_UINT32, BASE_DEC);
 171   pcap_proc_imsg_dissector_table = register_dissector_table("pcap.proc.imsg", "PCAP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_pcap, FT_UINT32, BASE_DEC);
 172   pcap_proc_sout_dissector_table = register_dissector_table("pcap.proc.sout", "PCAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC);
 173   pcap_proc_uout_dissector_table = register_dissector_table("pcap.proc.uout", "PCAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC);
 174   pcap_proc_out_dissector_table = register_dissector_table("pcap.proc.out", "PCAP-ELEMENTARY-PROCEDURE Outcome", proto_pcap, FT_UINT32, BASE_DEC);
 175
 176
 177 }
 178
 179
 180
 181