Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 301 insertions, 0 deletions

diff --git a/epan/dissectors/asn1/rnsap/packet-rnsap-template.c b/epan/dissectors/asn1/rnsap/packet-rnsap-template.c
new file mode 100644
index 00000000..fc08e17b
--- /dev/null
+++ b/epan/dissectors/asn1/rnsap/packet-rnsap-template.c
@@ -0,0 +1,301 @@
+/* packet-rnsap.c
+ * Routines for dissecting Universal Mobile Telecommunications System (UMTS);
+ * UTRAN Iur interface Radio Network Subsystem
+ * Application Part (RNSAP) signalling
+ * (3GPP TS 25.423 version 6.7.0 Release 6) packet dissection
+ * Copyright 2005 - 2006, Anders Broman <anders.broman@ericsson.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Ref: 3GPP TS 25.423 version 6.7.0 Release 6
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/asn1.h>
+#include <epan/proto_data.h>
+
+#include "packet-isup.h"
+#include "packet-per.h"
+#include "packet-ber.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 Iur interface Radio Network Subsystem Application Part"
+#define PSNAME "RNSAP"
+#define PFNAME "rnsap"
+
+#define SCCP_SSN_RNSAP 143
+
+#include "packet-rnsap-val.h"
+
+void proto_register_rnsap(void);
+void proto_reg_handoff_rnsap(void);
+
+typedef struct {
+    guint32     ProcedureCode;
+    guint32     ProtocolIE_ID;
+    guint32     ddMode;
+    const char *ProcedureID;
+    const char *obj_id;
+} rnsap_private_data_t;
+
+static dissector_handle_t ranap_handle = NULL;
+static dissector_handle_t rrc_dl_ccch_handle = NULL;
+static dissector_handle_t rrc_ul_ccch_handle = NULL;
+
+/* Initialize the protocol and registered fields */
+static int proto_rnsap = -1;
+
+static int hf_rnsap_transportLayerAddress_ipv4 = -1;
+static int hf_rnsap_transportLayerAddress_ipv6 = -1;
+static int hf_rnsap_transportLayerAddress_nsap = -1;
+#include "packet-rnsap-hf.c"
+
+/* Initialize the subtree pointers */
+static int ett_rnsap = -1;
+static int ett_rnsap_transportLayerAddress = -1;
+static int ett_rnsap_transportLayerAddress_nsap = -1;
+
+#include "packet-rnsap-ett.c"
+
+
+/* Dissector tables */
+static dissector_table_t rnsap_ies_dissector_table;
+static dissector_table_t rnsap_extension_dissector_table;
+static dissector_table_t rnsap_proc_imsg_dissector_table;
+static dissector_table_t rnsap_proc_sout_dissector_table;
+static dissector_table_t rnsap_proc_uout_dissector_table;
+
+static dissector_handle_t rnsap_handle;
+
+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_PrivateIEFieldValue(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 *);
+
+static rnsap_private_data_t *
+rnsap_get_private_data(packet_info *pinfo)
+{
+
+    rnsap_private_data_t *pdata = (rnsap_private_data_t *)p_get_proto_data(pinfo->pool, pinfo, proto_rnsap, 0);
+    if (!pdata) {
+        pdata = wmem_new0(pinfo->pool, rnsap_private_data_t);
+        pdata->ProcedureCode = 0xFFFF;
+        pdata->ddMode = 0xFFFF;
+        p_add_proto_data(pinfo->pool, pinfo, proto_rnsap, 0, pdata);
+    }
+    return pdata;
+}
+
+#include "packet-rnsap-fn.c"
+
+static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+  rnsap_private_data_t *pdata = rnsap_get_private_data(pinfo);
+  return (dissector_try_uint(rnsap_ies_dissector_table, pdata->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_)
+{
+  rnsap_private_data_t *pdata = rnsap_get_private_data(pinfo);
+  return (dissector_try_uint(rnsap_extension_dissector_table, pdata->ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
+}
+
+static int dissect_PrivateIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+  rnsap_private_data_t *pdata = rnsap_get_private_data(pinfo);
+  return (call_ber_oid_callback(pdata->obj_id, tvb, 0, pinfo, tree, NULL)) ? tvb_captured_length(tvb) : 0;
+}
+
+static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+  rnsap_private_data_t *pdata = rnsap_get_private_data(pinfo);
+  if (!pdata->ProcedureID) return 0;
+  return (dissector_try_string(rnsap_proc_imsg_dissector_table, pdata->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_)
+{
+  rnsap_private_data_t *pdata = rnsap_get_private_data(pinfo);
+  if (!pdata->ProcedureID) return 0;
+  return (dissector_try_string(rnsap_proc_sout_dissector_table, pdata->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_)
+{
+  rnsap_private_data_t *pdata = rnsap_get_private_data(pinfo);
+  if (!pdata->ProcedureID) return 0;
+  return (dissector_try_string(rnsap_proc_uout_dissector_table, pdata->ProcedureID, tvb, pinfo, tree, NULL)) ? tvb_captured_length(tvb) : 0;
+}
+
+static int
+dissect_rnsap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
+{
+	proto_item	*rnsap_item = NULL;
+	proto_tree	*rnsap_tree = NULL;
+
+	/* make entry in the Protocol column on summary display */
+	col_set_str(pinfo->cinfo, COL_PROTOCOL, "RNSAP");
+
+	/* create the rnsap protocol tree */
+	rnsap_item = proto_tree_add_item(tree, proto_rnsap, tvb, 0, -1, ENC_NA);
+	rnsap_tree = proto_item_add_subtree(rnsap_item, ett_rnsap);
+
+	/* remove any rnsap_private_data_t state from previous PDUs in this packet. */
+	p_remove_proto_data(pinfo->pool, pinfo, proto_rnsap, 0);
+
+	return dissect_RNSAP_PDU_PDU(tvb, pinfo, rnsap_tree, data);
+}
+
+/* Highest ProcedureCode value, used in heuristics */
+#define RNSAP_MAX_PC 61 /* id-enhancedRelocationResourceRelease = 61*/
+#define RNSAP_MSG_MIN_LENGTH 7
+static gboolean
+dissect_sccp_rnsap_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
+{
+  guint8 pdu_type;
+  guint8 procedure_id;
+  guint8 dd_mode;
+  guint8 criticality;
+  guint8 transaction_id_type;
+  guint length;
+  int length_field_offset;
+
+  #define PDU_TYPE_OFFSET 0
+  #define PROC_CODE_OFFSET 1
+  #define DD_CRIT_OFFSET 2
+  if (tvb_captured_length(tvb) < RNSAP_MSG_MIN_LENGTH) {
+    return FALSE;
+  }
+
+  pdu_type = tvb_get_guint8(tvb, PDU_TYPE_OFFSET);
+  if (pdu_type & 0x1F) {
+    /* pdu_type is not 0x00 (initiatingMessage), 0x20 (succesfulOutcome),
+       0x40 (unsuccesfulOutcome) or 0x60 (outcome), ignore extension bit (0x80) */
+    return FALSE;
+  }
+
+  procedure_id = tvb_get_guint8(tvb, PROC_CODE_OFFSET);
+  if (procedure_id > RNSAP_MAX_PC) {
+      return FALSE;
+  }
+
+  dd_mode = tvb_get_guint8(tvb, DD_CRIT_OFFSET) >> 5;
+  if (dd_mode >= 0x03) {
+    /* dd_mode is not 0x00 (tdd), 0x01 (fdd) or 0x02 (common) */
+    return FALSE;
+  }
+
+  criticality = (tvb_get_guint8(tvb, DD_CRIT_OFFSET) & 0x18) >> 3;
+  if (criticality == 0x03) {
+    /* criticality is not 0x00 (reject), 0x01 (ignore) or 0x02 (notify) */
+    return FALSE;
+  }
+
+  /* Finding the offset for the length field - depends on wether the transaction id is long or short */
+  transaction_id_type = (tvb_get_guint8(tvb, DD_CRIT_OFFSET) & 0x04) >> 2;
+  if(transaction_id_type == 0x00) { /* Short transaction id - 1 byte*/
+    length_field_offset = 4;
+  }
+  else { /* Long transaction id - 2 bytes*/
+    length_field_offset = 5;
+  }
+
+  /* compute aligned PER length determinant without calling dissect_per_length_determinant()
+     to avoid exceptions and info added to tree, info column and expert info */
+  length = tvb_get_guint8(tvb, length_field_offset);
+  length_field_offset += 1;
+  if (length & 0x80) {
+    if ((length & 0xc0) == 0x80) {
+      length &= 0x3f;
+      length <<= 8;
+      length += tvb_get_guint8(tvb, length_field_offset);
+      length_field_offset += 1;
+    } else {
+      length = 0;
+    }
+  }
+  if (length!= (tvb_reported_length(tvb) - length_field_offset)){
+    return FALSE;
+  }
+
+  dissect_rnsap(tvb, pinfo, tree, data);
+
+  return TRUE;
+}
+
+
+/*--- proto_register_rnsap -------------------------------------------*/
+void proto_register_rnsap(void) {
+
+  /* List of fields */
+  static hf_register_info hf[] = {
+    { &hf_rnsap_transportLayerAddress_ipv4,
+      { "transportLayerAddress IPv4", "rnsap.transportLayerAddress_ipv4",
+      FT_IPv4, BASE_NONE, NULL, 0,
+    NULL, HFILL }},
+    { &hf_rnsap_transportLayerAddress_ipv6,
+      { "transportLayerAddress IPv6", "rnsap.transportLayerAddress_ipv6",
+      FT_IPv6, BASE_NONE, NULL, 0,
+      NULL, HFILL }},
+    { &hf_rnsap_transportLayerAddress_nsap,
+      { "transportLayerAddress NSAP", "rnsap.transportLayerAddress_NSAP",
+      FT_BYTES, BASE_NONE, NULL, 0,
+      NULL, HFILL }},
+#include "packet-rnsap-hfarr.c"
+  };
+
+  /* List of subtrees */
+  static gint *ett[] = {
+    &ett_rnsap,
+    &ett_rnsap_transportLayerAddress,
+    &ett_rnsap_transportLayerAddress_nsap,
+#include "packet-rnsap-ettarr.c"
+  };
+
+
+  /* Register protocol */
+  proto_rnsap = proto_register_protocol(PNAME, PSNAME, PFNAME);
+  /* Register fields and subtrees */
+  proto_register_field_array(proto_rnsap, hf, array_length(hf));
+  proto_register_subtree_array(ett, array_length(ett));
+
+  /* Register dissector */
+  rnsap_handle = register_dissector("rnsap", dissect_rnsap, proto_rnsap);
+
+  /* Register dissector tables */
+  rnsap_ies_dissector_table = register_dissector_table("rnsap.ies", "RNSAP-PROTOCOL-IES", proto_rnsap, FT_UINT32, BASE_DEC);
+  rnsap_extension_dissector_table = register_dissector_table("rnsap.extension", "RNSAP-PROTOCOL-EXTENSION", proto_rnsap, FT_UINT32, BASE_DEC);
+  rnsap_proc_imsg_dissector_table = register_dissector_table("rnsap.proc.imsg", "RNSAP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_rnsap, FT_STRING, STRING_CASE_SENSITIVE);
+  rnsap_proc_sout_dissector_table = register_dissector_table("rnsap.proc.sout", "RNSAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_rnsap, FT_STRING, STRING_CASE_SENSITIVE);
+  rnsap_proc_uout_dissector_table = register_dissector_table("rnsap.proc.uout", "RNSAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_rnsap, FT_STRING, STRING_CASE_SENSITIVE);
+
+}
+
+
+/*--- proto_reg_handoff_rnsap ---------------------------------------*/
+void
+proto_reg_handoff_rnsap(void)
+{
+	ranap_handle = find_dissector("ranap");
+	rrc_dl_ccch_handle = find_dissector_add_dependency("rrc.dl.ccch", proto_rnsap);
+	rrc_ul_ccch_handle = find_dissector_add_dependency("rrc.ul.ccch", proto_rnsap);
+
+	dissector_add_uint("sccp.ssn", SCCP_SSN_RNSAP, rnsap_handle);
+	heur_dissector_add("sccp", dissect_sccp_rnsap_heur, "RNSAP over SCCP", "rnsap_sccp", proto_rnsap, HEURISTIC_ENABLE);
+
+#include "packet-rnsap-dis-tab.c"
+}
+
+