Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 994 insertions, 0 deletions

diff --git a/epan/dissectors/packet-rtse.c b/epan/dissectors/packet-rtse.c
new file mode 100644
index 00000000..e7e707a9
--- /dev/null
+++ b/epan/dissectors/packet-rtse.c
@@ -0,0 +1,994 @@
+/* Do not modify this file. Changes will be overwritten.                      */
+/* Generated automatically by the ASN.1 to Wireshark dissector compiler       */
+/* packet-rtse.c                                                              */
+/* asn2wrs.py -b -L -p rtse -c ./rtse.cnf -s ./packet-rtse-template -D . -O ../.. rtse.asn */
+
+/* packet-rtse-template.c
+ * Routines for RTSE packet dissection
+ * Graeme Lunt 2005
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/conversation.h>
+#include <epan/prefs.h>
+#include <epan/reassemble.h>
+#include <epan/asn1.h>
+#include <epan/expert.h>
+
+#include <wsutil/str_util.h>
+
+#include "packet-ber.h"
+#include "packet-pres.h"
+#include "packet-acse.h"
+#include "packet-ros.h"
+#include "packet-rtse.h"
+
+#define PNAME  "X.228 OSI Reliable Transfer Service"
+#define PSNAME "RTSE"
+#define PFNAME "rtse"
+
+void proto_register_rtse(void);
+void proto_reg_handoff_rtse(void);
+
+/* Initialize the protocol and registered fields */
+static int proto_rtse = -1;
+
+static gboolean open_request=FALSE;
+static guint32 app_proto=0;
+
+static proto_tree *top_tree=NULL;
+
+/* Preferences */
+static gboolean rtse_reassemble = TRUE;
+
+static int hf_rtse_rtorq_apdu = -1;               /* RTORQapdu */
+static int hf_rtse_rtoac_apdu = -1;               /* RTOACapdu */
+static int hf_rtse_rtorj_apdu = -1;               /* RTORJapdu */
+static int hf_rtse_rttp_apdu = -1;                /* RTTPapdu */
+static int hf_rtse_rttr_apdu = -1;                /* RTTRapdu */
+static int hf_rtse_rtab_apdu = -1;                /* RTABapdu */
+static int hf_rtse_checkpointSize = -1;           /* INTEGER */
+static int hf_rtse_windowSize = -1;               /* INTEGER */
+static int hf_rtse_dialogueMode = -1;             /* T_dialogueMode */
+static int hf_rtse_connectionDataRQ = -1;         /* ConnectionData */
+static int hf_rtse_applicationProtocol = -1;      /* T_applicationProtocol */
+static int hf_rtse_connectionDataAC = -1;         /* ConnectionData */
+static int hf_rtse_refuseReason = -1;             /* RefuseReason */
+static int hf_rtse_userDataRJ = -1;               /* T_userDataRJ */
+static int hf_rtse_abortReason = -1;              /* AbortReason */
+static int hf_rtse_reflectedParameter = -1;       /* BIT_STRING */
+static int hf_rtse_userdataAB = -1;               /* T_userdataAB */
+static int hf_rtse_open = -1;                     /* T_open */
+static int hf_rtse_recover = -1;                  /* SessionConnectionIdentifier */
+static int hf_rtse_callingSSuserReference = -1;   /* CallingSSuserReference */
+static int hf_rtse_commonReference = -1;          /* CommonReference */
+static int hf_rtse_additionalReferenceInformation = -1;  /* AdditionalReferenceInformation */
+static int hf_rtse_t61String = -1;                /* T_t61String */
+static int hf_rtse_octetString = -1;              /* T_octetString */
+
+/* Initialize the subtree pointers */
+static gint ett_rtse = -1;
+static gint ett_rtse_RTSE_apdus = -1;
+static gint ett_rtse_RTORQapdu = -1;
+static gint ett_rtse_RTOACapdu = -1;
+static gint ett_rtse_RTORJapdu = -1;
+static gint ett_rtse_RTABapdu = -1;
+static gint ett_rtse_ConnectionData = -1;
+static gint ett_rtse_SessionConnectionIdentifier = -1;
+static gint ett_rtse_CallingSSuserReference = -1;
+
+static expert_field ei_rtse_dissector_oid_not_implemented = EI_INIT;
+static expert_field ei_rtse_unknown_rtse_pdu = EI_INIT;
+static expert_field ei_rtse_abstract_syntax = EI_INIT;
+
+static dissector_table_t rtse_oid_dissector_table=NULL;
+static dissector_handle_t rtse_handle = NULL;
+static gint ett_rtse_unknown = -1;
+
+static reassembly_table rtse_reassembly_table;
+
+static int hf_rtse_segment_data = -1;
+static int hf_rtse_fragments = -1;
+static int hf_rtse_fragment = -1;
+static int hf_rtse_fragment_overlap = -1;
+static int hf_rtse_fragment_overlap_conflicts = -1;
+static int hf_rtse_fragment_multiple_tails = -1;
+static int hf_rtse_fragment_too_long_fragment = -1;
+static int hf_rtse_fragment_error = -1;
+static int hf_rtse_fragment_count = -1;
+static int hf_rtse_reassembled_in = -1;
+static int hf_rtse_reassembled_length = -1;
+
+static gint ett_rtse_fragment = -1;
+static gint ett_rtse_fragments = -1;
+
+static const fragment_items rtse_frag_items = {
+    /* Fragment subtrees */
+    &ett_rtse_fragment,
+    &ett_rtse_fragments,
+    /* Fragment fields */
+    &hf_rtse_fragments,
+    &hf_rtse_fragment,
+    &hf_rtse_fragment_overlap,
+    &hf_rtse_fragment_overlap_conflicts,
+    &hf_rtse_fragment_multiple_tails,
+    &hf_rtse_fragment_too_long_fragment,
+    &hf_rtse_fragment_error,
+    &hf_rtse_fragment_count,
+    /* Reassembled in field */
+    &hf_rtse_reassembled_in,
+    /* Reassembled length field */
+    &hf_rtse_reassembled_length,
+    /* Reassembled data field */
+    NULL,
+    /* Tag */
+    "RTSE fragments"
+};
+
+void
+register_rtse_oid_dissector_handle(const char *oid, dissector_handle_t dissector, int proto, const char *name, gboolean uses_ros)
+{
+/* XXX: Note that this fcn is called from proto_reg_handoff in *other* dissectors ... */
+
+  static  dissector_handle_t ros_handle = NULL;
+
+  if (ros_handle == NULL)
+    ros_handle = find_dissector("ros");
+
+  /* register RTSE with the BER (ACSE) */
+  register_ber_oid_dissector_handle(oid, rtse_handle, proto, name);
+
+  if (uses_ros) {
+    /* make sure we call ROS ... */
+    dissector_add_string("rtse.oid", oid, ros_handle);
+
+    /* and then tell ROS how to dissect the AS*/
+    if (dissector != NULL)
+      register_ros_oid_dissector_handle(oid, dissector, proto, name, TRUE);
+
+  } else {
+    /* otherwise we just remember how to dissect the AS */
+    dissector_add_string("rtse.oid", oid, dissector);
+  }
+}
+
+static int
+call_rtse_oid_callback(const char *oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, void* data)
+{
+    tvbuff_t *next_tvb;
+    int len;
+
+    next_tvb = tvb_new_subset_remaining(tvb, offset);
+
+    if ((len = dissector_try_string(rtse_oid_dissector_table, oid, next_tvb, pinfo, tree, data)) == 0) {
+        proto_item *item;
+        proto_tree *next_tree;
+
+        next_tree = proto_tree_add_subtree_format(tree, next_tvb, 0, -1, ett_rtse_unknown, &item,
+                "RTSE: Dissector for OID:%s not implemented. Contact Wireshark developers if you want this supported", oid);
+
+        expert_add_info_format(pinfo, item, &ei_rtse_dissector_oid_not_implemented,
+                                       "RTSE: Dissector for OID %s not implemented", oid);
+        len = dissect_unknown_ber(pinfo, next_tvb, offset, next_tree);
+    }
+
+    offset += len;
+
+    return offset;
+}
+
+static int
+call_rtse_external_type_callback(bool implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_)
+{
+    const char    *oid = NULL;
+
+    if (actx->external.indirect_ref_present) {
+
+        oid = (const char *)find_oid_by_pres_ctx_id(actx->pinfo, actx->external.indirect_reference);
+
+        if (!oid)
+            proto_tree_add_expert_format(tree, actx->pinfo, &ei_rtse_abstract_syntax, tvb, offset, tvb_captured_length_remaining(tvb, offset),
+                    "Unable to determine abstract syntax for indirect reference: %d.", actx->external.indirect_reference);
+    } else if (actx->external.direct_ref_present) {
+        oid = actx->external.direct_reference;
+    }
+
+    if (oid)
+        offset = call_rtse_oid_callback(oid, tvb, offset, actx->pinfo, top_tree ? top_tree : tree, actx->private_data);
+
+    return offset;
+}
+
+
+
+static int
+dissect_rtse_INTEGER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+                                                NULL);
+
+  return offset;
+}
+
+
+static const value_string rtse_T_dialogueMode_vals[] = {
+  {   0, "monologue" },
+  {   1, "twa" },
+  { 0, NULL }
+};
+
+
+static int
+dissect_rtse_T_dialogueMode(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+                                                NULL);
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_T_open(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+
+        struct SESSION_DATA_STRUCTURE* session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
+        const char *oid = NULL;
+
+        switch(app_proto)  {
+        case 1:         /* mts-transfer-protocol-1984 */
+                oid = "applicationProtocol.1";
+                break;
+        case 12:        /* mts-transfer-protocol */
+                oid = "applicationProtocol.12";
+                break;
+        default:
+                if(session && session->pres_ctx_id)
+                        oid = find_oid_by_pres_ctx_id(actx->pinfo, session->pres_ctx_id);
+                break;
+        }
+
+        if(!oid) /* XXX: problem here is we haven't decoded the applicationProtocol yet - so we make assumptions! */
+                oid = "applicationProtocol.12";
+
+        if(oid) {
+
+                offset = call_rtse_oid_callback(oid, tvb, offset, actx->pinfo, top_tree ? top_tree : tree, session);
+        }
+
+        /* else XXX: need to flag we can't find the presentation context */
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_T_t61String(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  tvbuff_t *string = NULL;
+    offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_TeletexString,
+                                            actx, tree, tvb, offset, hf_index,
+                                            &string);
+
+  if(open_request && string)
+    col_append_fstr(actx->pinfo->cinfo, COL_INFO, " %s", tvb_get_string_enc(actx->pinfo->pool, string, 0,
+                                                                            tvb_reported_length(string), ENC_T61));
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_T_octetString(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  tvbuff_t *string = NULL;
+    offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
+                                       &string);
+
+  if(open_request && string)
+    col_append_fstr(actx->pinfo->cinfo, COL_INFO, " %s", tvb_format_text(actx->pinfo->pool, string, 0, tvb_reported_length(string)));
+
+
+  return offset;
+}
+
+
+static const value_string rtse_CallingSSuserReference_vals[] = {
+  {   0, "t61String" },
+  {   1, "octetString" },
+  { 0, NULL }
+};
+
+static const ber_choice_t CallingSSuserReference_choice[] = {
+  {   0, &hf_rtse_t61String      , BER_CLASS_UNI, BER_UNI_TAG_TeletexString, BER_FLAGS_NOOWNTAG, dissect_rtse_T_t61String },
+  {   1, &hf_rtse_octetString    , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_rtse_T_octetString },
+  { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_rtse_CallingSSuserReference(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_choice(actx, tree, tvb, offset,
+                                 CallingSSuserReference_choice, hf_index, ett_rtse_CallingSSuserReference,
+                                 NULL);
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_CommonReference(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  tvbuff_t *string = NULL;
+    offset = dissect_ber_UTCTime(implicit_tag, actx, tree, tvb, offset, hf_index, NULL, NULL);
+
+  if(open_request && string)
+    col_append_fstr(actx->pinfo->cinfo, COL_INFO, " %s", tvb_format_text(actx->pinfo->pool, string, 0, tvb_reported_length(string)));
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_AdditionalReferenceInformation(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_TeletexString,
+                                            actx, tree, tvb, offset, hf_index,
+                                            NULL);
+
+  return offset;
+}
+
+
+static const ber_sequence_t SessionConnectionIdentifier_sequence[] = {
+  { &hf_rtse_callingSSuserReference, BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_rtse_CallingSSuserReference },
+  { &hf_rtse_commonReference, BER_CLASS_UNI, BER_UNI_TAG_UTCTime, BER_FLAGS_NOOWNTAG, dissect_rtse_CommonReference },
+  { &hf_rtse_additionalReferenceInformation, BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_AdditionalReferenceInformation },
+  { NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_rtse_SessionConnectionIdentifier(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  if(open_request){
+    col_append_str(actx->pinfo->cinfo, COL_INFO, "Recover");
+  }
+    offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
+                                   SessionConnectionIdentifier_sequence, hf_index, ett_rtse_SessionConnectionIdentifier);
+
+
+
+  return offset;
+}
+
+
+static const value_string rtse_ConnectionData_vals[] = {
+  {   0, "open" },
+  {   1, "recover" },
+  { 0, NULL }
+};
+
+static const ber_choice_t ConnectionData_choice[] = {
+  {   0, &hf_rtse_open           , BER_CLASS_CON, 0, 0, dissect_rtse_T_open },
+  {   1, &hf_rtse_recover        , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_rtse_SessionConnectionIdentifier },
+  { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_rtse_ConnectionData(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_choice(actx, tree, tvb, offset,
+                                 ConnectionData_choice, hf_index, ett_rtse_ConnectionData,
+                                 NULL);
+
+  return offset;
+}
+
+
+static const value_string rtse_T_applicationProtocol_vals[] = {
+  {  12, "mts-transfer-protocol" },
+  {   1, "mts-transfer-protocol-1984" },
+  { 0, NULL }
+};
+
+
+static int
+dissect_rtse_T_applicationProtocol(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+
+  offset = dissect_ber_integer(TRUE, actx, tree, tvb, offset, hf_index, &app_proto);
+
+
+  return offset;
+}
+
+
+static const ber_sequence_t RTORQapdu_set[] = {
+  { &hf_rtse_checkpointSize , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_INTEGER },
+  { &hf_rtse_windowSize     , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_INTEGER },
+  { &hf_rtse_dialogueMode   , BER_CLASS_CON, 2, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_T_dialogueMode },
+  { &hf_rtse_connectionDataRQ, BER_CLASS_CON, 3, BER_FLAGS_NOTCHKTAG, dissect_rtse_ConnectionData },
+  { &hf_rtse_applicationProtocol, BER_CLASS_CON, 4, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_T_applicationProtocol },
+  { NULL, 0, 0, 0, NULL }
+};
+
+int
+dissect_rtse_RTORQapdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  struct SESSION_DATA_STRUCTURE* session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
+
+  if(session != NULL)
+        session->ros_op = (ROS_OP_BIND | ROS_OP_ARGUMENT);
+  open_request=TRUE;
+    offset = dissect_ber_set(implicit_tag, actx, tree, tvb, offset,
+                              RTORQapdu_set, hf_index, ett_rtse_RTORQapdu);
+
+  open_request=FALSE;
+
+
+  return offset;
+}
+
+
+static const ber_sequence_t RTOACapdu_set[] = {
+  { &hf_rtse_checkpointSize , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_INTEGER },
+  { &hf_rtse_windowSize     , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_INTEGER },
+  { &hf_rtse_connectionDataAC, BER_CLASS_CON, 2, BER_FLAGS_NOTCHKTAG, dissect_rtse_ConnectionData },
+  { NULL, 0, 0, 0, NULL }
+};
+
+int
+dissect_rtse_RTOACapdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  struct SESSION_DATA_STRUCTURE* session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
+
+  if(session != NULL)
+        session->ros_op = (ROS_OP_BIND | ROS_OP_RESULT);
+
+    offset = dissect_ber_set(implicit_tag, actx, tree, tvb, offset,
+                              RTOACapdu_set, hf_index, ett_rtse_RTOACapdu);
+
+
+
+  return offset;
+}
+
+
+static const value_string rtse_RefuseReason_vals[] = {
+  {   0, "rtsBusy" },
+  {   1, "cannotRecover" },
+  {   2, "validationFailure" },
+  {   3, "unacceptableDialogueMode" },
+  { 0, NULL }
+};
+
+
+static int
+dissect_rtse_RefuseReason(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  int reason = -1;
+
+    offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+                                                &reason);
+
+
+  if(reason != -1)
+   col_append_fstr(actx->pinfo->cinfo, COL_INFO, " (%s)", val_to_str(reason, rtse_RefuseReason_vals, "reason(%d)"));
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_T_userDataRJ(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+    struct SESSION_DATA_STRUCTURE* session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
+        const char *oid = NULL;
+
+        switch(app_proto)  {
+        case 1:         /* mts-transfer-protocol-1984 */
+                oid = "applicationProtocol.1";
+                break;
+        case 12:        /* mts-transfer-protocol */
+                oid = "applicationProtocol.12";
+                break;
+        default:
+                if(session && session->pres_ctx_id)
+                        oid = find_oid_by_pres_ctx_id(actx->pinfo, session->pres_ctx_id);
+                break;
+        }
+
+        if(!oid) /* XXX: problem here is we haven't decoded the applicationProtocol yet - so we make assumptions! */
+                oid = "applicationProtocol.12";
+
+        if(oid) {
+          if(session != NULL)
+                session->ros_op = (ROS_OP_BIND | ROS_OP_ERROR);
+
+          offset = call_rtse_oid_callback(oid, tvb, offset, actx->pinfo, top_tree ? top_tree : tree, session);
+        }
+
+
+  return offset;
+}
+
+
+static const ber_sequence_t RTORJapdu_set[] = {
+  { &hf_rtse_refuseReason   , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_RefuseReason },
+  { &hf_rtse_userDataRJ     , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL, dissect_rtse_T_userDataRJ },
+  { NULL, 0, 0, 0, NULL }
+};
+
+int
+dissect_rtse_RTORJapdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  col_append_str(actx->pinfo->cinfo, COL_INFO, "Refuse");
+
+    offset = dissect_ber_set(implicit_tag, actx, tree, tvb, offset,
+                              RTORJapdu_set, hf_index, ett_rtse_RTORJapdu);
+
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_RTTPapdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  int priority = -1;
+
+  col_append_str(actx->pinfo->cinfo, COL_INFO, "Turn-Please");
+
+    offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+                                                &priority);
+
+
+  if(priority != -1)
+    col_append_fstr(actx->pinfo->cinfo, COL_INFO, " (%d)", priority);
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_RTTRapdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+        tvbuff_t *next_tvb = NULL;
+    struct SESSION_DATA_STRUCTURE* session = (struct SESSION_DATA_STRUCTURE*)actx->private_data;
+
+        offset = dissect_ber_octet_string(FALSE, actx, tree, tvb, offset, hf_index, &next_tvb);
+
+        if(next_tvb) {
+
+                /* XXX: we should check is this is an EXTERNAL first */
+
+                /* ROS won't do this for us */
+                if(session)
+                        session->ros_op = (ROS_OP_INVOKE | ROS_OP_ARGUMENT);
+
+                offset = dissect_ber_external_type(FALSE, tree, next_tvb, 0, actx,  -1, call_rtse_external_type_callback);
+        }
+
+
+
+  return offset;
+}
+
+
+static const value_string rtse_AbortReason_vals[] = {
+  {   0, "localSystemProblem" },
+  {   1, "invalidParameter" },
+  {   2, "unrecognizedActivity" },
+  {   3, "temporaryProblem" },
+  {   4, "protocolError" },
+  {   5, "permanentProblem" },
+  {   6, "userError" },
+  {   7, "transferCompleted" },
+  { 0, NULL }
+};
+
+
+static int
+dissect_rtse_AbortReason(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  int reason = -1;
+
+    offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
+                                                &reason);
+
+
+  if(reason != -1)
+   col_append_fstr(actx->pinfo->cinfo, COL_INFO, " (%s)", val_to_str(reason, rtse_AbortReason_vals, "reason(%d)"));
+
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_BIT_STRING(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_bitstring(implicit_tag, actx, tree, tvb, offset,
+                                    NULL, 0, hf_index, -1,
+                                    NULL);
+
+  return offset;
+}
+
+
+
+static int
+dissect_rtse_T_userdataAB(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+/*XXX not implemented yet */
+
+
+  return offset;
+}
+
+
+static const ber_sequence_t RTABapdu_set[] = {
+  { &hf_rtse_abortReason    , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_AbortReason },
+  { &hf_rtse_reflectedParameter, BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_rtse_BIT_STRING },
+  { &hf_rtse_userdataAB     , BER_CLASS_CON, 2, BER_FLAGS_OPTIONAL, dissect_rtse_T_userdataAB },
+  { NULL, 0, 0, 0, NULL }
+};
+
+int
+dissect_rtse_RTABapdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  col_append_str(actx->pinfo->cinfo, COL_INFO, "Abort");
+
+    offset = dissect_ber_set(implicit_tag, actx, tree, tvb, offset,
+                              RTABapdu_set, hf_index, ett_rtse_RTABapdu);
+
+
+
+  return offset;
+}
+
+
+static const ber_choice_t RTSE_apdus_choice[] = {
+  {   0, &hf_rtse_rtorq_apdu     , BER_CLASS_CON, 16, BER_FLAGS_IMPLTAG, dissect_rtse_RTORQapdu },
+  {   1, &hf_rtse_rtoac_apdu     , BER_CLASS_CON, 17, BER_FLAGS_IMPLTAG, dissect_rtse_RTOACapdu },
+  {   2, &hf_rtse_rtorj_apdu     , BER_CLASS_CON, 18, BER_FLAGS_IMPLTAG, dissect_rtse_RTORJapdu },
+  {   3, &hf_rtse_rttp_apdu      , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_rtse_RTTPapdu },
+  {   4, &hf_rtse_rttr_apdu      , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_rtse_RTTRapdu },
+  {   5, &hf_rtse_rtab_apdu      , BER_CLASS_CON, 22, BER_FLAGS_IMPLTAG, dissect_rtse_RTABapdu },
+  { 0, NULL, 0, 0, 0, NULL }
+};
+
+static int
+dissect_rtse_RTSE_apdus(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
+  offset = dissect_ber_choice(actx, tree, tvb, offset,
+                                 RTSE_apdus_choice, hf_index, ett_rtse_RTSE_apdus,
+                                 NULL);
+
+  return offset;
+}
+
+
+/*
+* Dissect RTSE PDUs inside a PPDU.
+*/
+static int
+dissect_rtse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data)
+{
+    int offset = 0;
+    int old_offset;
+    proto_item *item;
+    proto_tree *tree;
+    proto_tree *next_tree=NULL;
+    tvbuff_t *next_tvb = NULL;
+    tvbuff_t *data_tvb = NULL;
+    fragment_head *frag_msg = NULL;
+    guint32 fragment_length;
+    guint32 rtse_id = 0;
+    gboolean data_handled = FALSE;
+    struct SESSION_DATA_STRUCTURE* session;
+    conversation_t *conversation = NULL;
+    asn1_ctx_t asn1_ctx;
+    asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
+
+    /* do we have application context from the acse dissector? */
+    if (data == NULL)
+        return 0;
+    session = (struct SESSION_DATA_STRUCTURE*)data;
+
+    /* save parent_tree so subdissectors can create new top nodes */
+    top_tree=parent_tree;
+
+    asn1_ctx.private_data = session;
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTSE");
+    col_clear(pinfo->cinfo, COL_INFO);
+
+    if (rtse_reassemble &&
+        ((session->spdu_type == SES_DATA_TRANSFER) ||
+         (session->spdu_type == SES_MAJOR_SYNC_POINT)))
+    {
+        /* Use conversation index as fragment id */
+        conversation  = find_conversation_pinfo(pinfo, 0);
+        if (conversation != NULL) {
+            rtse_id = conversation->conv_index;
+        }
+        session->rtse_reassemble = TRUE;
+    }
+    if (rtse_reassemble && session->spdu_type == SES_MAJOR_SYNC_POINT) {
+        frag_msg = fragment_end_seq_next (&rtse_reassembly_table,
+                          pinfo, rtse_id, NULL);
+        next_tvb = process_reassembled_data (tvb, offset, pinfo, "Reassembled RTSE",
+                             frag_msg, &rtse_frag_items, NULL, parent_tree);
+    }
+
+    item = proto_tree_add_item(parent_tree, proto_rtse, next_tvb ? next_tvb : tvb, 0, -1, ENC_NA);
+    tree = proto_item_add_subtree(item, ett_rtse);
+
+    if (rtse_reassemble && session->spdu_type == SES_DATA_TRANSFER) {
+        /* strip off the OCTET STRING encoding - including any CONSTRUCTED OCTET STRING */
+        dissect_ber_octet_string(FALSE, &asn1_ctx, tree, tvb, offset, hf_rtse_segment_data, &data_tvb);
+
+        if (data_tvb) {
+            fragment_length = tvb_captured_length_remaining (data_tvb, 0);
+            proto_item_append_text(asn1_ctx.created_item, " (%u byte%s)", fragment_length,
+                                        plurality(fragment_length, "", "s"));
+            frag_msg = fragment_add_seq_next (&rtse_reassembly_table,
+                              data_tvb, 0, pinfo,
+                              rtse_id, NULL,
+                              fragment_length, TRUE);
+            if (frag_msg && pinfo->num != frag_msg->reassembled_in) {
+                /* Add a "Reassembled in" link if not reassembled in this frame */
+                proto_tree_add_uint (tree, *(rtse_frag_items.hf_reassembled_in),
+                             data_tvb, 0, 0, frag_msg->reassembled_in);
+            }
+            pinfo->fragmented = TRUE;
+            data_handled = TRUE;
+        } else {
+            fragment_length = tvb_captured_length_remaining (tvb, offset);
+        }
+
+        col_append_fstr(pinfo->cinfo, COL_INFO, "[RTSE fragment, %u byte%s]",
+                    fragment_length, plurality(fragment_length, "", "s"));
+    } else if (rtse_reassemble && session->spdu_type == SES_MAJOR_SYNC_POINT) {
+        if (next_tvb) {
+            /* ROS won't do this for us */
+            session->ros_op = (ROS_OP_INVOKE | ROS_OP_ARGUMENT);
+            /*offset=*/dissect_ber_external_type(FALSE, tree, next_tvb, 0, &asn1_ctx, -1, call_rtse_external_type_callback);
+            top_tree = NULL;
+            /* Return other than 0 to indicate that we handled this packet */
+            return 1;
+        } else {
+            offset = tvb_captured_length (tvb);
+        }
+        pinfo->fragmented = FALSE;
+        data_handled = TRUE;
+    }
+
+    if (!data_handled) {
+        while (tvb_reported_length_remaining(tvb, offset) > 0) {
+            old_offset=offset;
+            offset=dissect_rtse_RTSE_apdus(TRUE, tvb, offset, &asn1_ctx, tree, -1);
+            if (offset == old_offset) {
+                next_tree = proto_tree_add_subtree(tree, tvb, offset, -1,
+                                ett_rtse_unknown, &item, "Unknown RTSE PDU");
+                expert_add_info (pinfo, item, &ei_rtse_unknown_rtse_pdu);
+                dissect_unknown_ber(pinfo, tvb, offset, next_tree);
+                break;
+            }
+        }
+    }
+
+    top_tree = NULL;
+    return tvb_captured_length(tvb);
+}
+
+/*--- proto_register_rtse -------------------------------------------*/
+void proto_register_rtse(void) {
+
+  /* List of fields */
+  static hf_register_info hf[] =
+  {
+    /* Fragment entries */
+    { &hf_rtse_segment_data,
+      { "RTSE segment data", "rtse.segment", FT_NONE, BASE_NONE,
+    NULL, 0x00, NULL, HFILL } },
+    { &hf_rtse_fragments,
+      { "RTSE fragments", "rtse.fragments", FT_NONE, BASE_NONE,
+    NULL, 0x00, NULL, HFILL } },
+    { &hf_rtse_fragment,
+      { "RTSE fragment", "rtse.fragment", FT_FRAMENUM, BASE_NONE,
+    NULL, 0x00, NULL, HFILL } },
+    { &hf_rtse_fragment_overlap,
+      { "RTSE fragment overlap", "rtse.fragment.overlap", FT_BOOLEAN,
+    BASE_NONE, NULL, 0x0, NULL, HFILL } },
+    { &hf_rtse_fragment_overlap_conflicts,
+      { "RTSE fragment overlapping with conflicting data",
+    "rtse.fragment.overlap.conflicts", FT_BOOLEAN, BASE_NONE,
+    NULL, 0x0, NULL, HFILL } },
+    { &hf_rtse_fragment_multiple_tails,
+      { "RTSE has multiple tail fragments",
+    "rtse.fragment.multiple_tails", FT_BOOLEAN, BASE_NONE,
+    NULL, 0x0, NULL, HFILL } },
+    { &hf_rtse_fragment_too_long_fragment,
+      { "RTSE fragment too long", "rtse.fragment.too_long_fragment",
+    FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL } },
+    { &hf_rtse_fragment_error,
+      { "RTSE defragmentation error", "rtse.fragment.error", FT_FRAMENUM,
+    BASE_NONE, NULL, 0x00, NULL, HFILL } },
+    { &hf_rtse_fragment_count,
+      { "RTSE fragment count", "rtse.fragment.count", FT_UINT32, BASE_DEC,
+    NULL, 0x00, NULL, HFILL } },
+    { &hf_rtse_reassembled_in,
+      { "Reassembled RTSE in frame", "rtse.reassembled.in", FT_FRAMENUM, BASE_NONE,
+    NULL, 0x00, "This RTSE packet is reassembled in this frame", HFILL } },
+    { &hf_rtse_reassembled_length,
+      { "Reassembled RTSE length", "rtse.reassembled.length", FT_UINT32, BASE_DEC,
+    NULL, 0x00, "The total length of the reassembled payload", HFILL } },
+
+    { &hf_rtse_rtorq_apdu,
+      { "rtorq-apdu", "rtse.rtorq_apdu_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        "RTORQapdu", HFILL }},
+    { &hf_rtse_rtoac_apdu,
+      { "rtoac-apdu", "rtse.rtoac_apdu_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        "RTOACapdu", HFILL }},
+    { &hf_rtse_rtorj_apdu,
+      { "rtorj-apdu", "rtse.rtorj_apdu_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        "RTORJapdu", HFILL }},
+    { &hf_rtse_rttp_apdu,
+      { "rttp-apdu", "rtse.rttp_apdu",
+        FT_INT32, BASE_DEC, NULL, 0,
+        "RTTPapdu", HFILL }},
+    { &hf_rtse_rttr_apdu,
+      { "rttr-apdu", "rtse.rttr_apdu",
+        FT_BYTES, BASE_NONE, NULL, 0,
+        "RTTRapdu", HFILL }},
+    { &hf_rtse_rtab_apdu,
+      { "rtab-apdu", "rtse.rtab_apdu_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        "RTABapdu", HFILL }},
+    { &hf_rtse_checkpointSize,
+      { "checkpointSize", "rtse.checkpointSize",
+        FT_INT32, BASE_DEC, NULL, 0,
+        "INTEGER", HFILL }},
+    { &hf_rtse_windowSize,
+      { "windowSize", "rtse.windowSize",
+        FT_INT32, BASE_DEC, NULL, 0,
+        "INTEGER", HFILL }},
+    { &hf_rtse_dialogueMode,
+      { "dialogueMode", "rtse.dialogueMode",
+        FT_INT32, BASE_DEC, VALS(rtse_T_dialogueMode_vals), 0,
+        NULL, HFILL }},
+    { &hf_rtse_connectionDataRQ,
+      { "connectionDataRQ", "rtse.connectionDataRQ",
+        FT_UINT32, BASE_DEC, VALS(rtse_ConnectionData_vals), 0,
+        "ConnectionData", HFILL }},
+    { &hf_rtse_applicationProtocol,
+      { "applicationProtocol", "rtse.applicationProtocol",
+        FT_INT32, BASE_DEC, VALS(rtse_T_applicationProtocol_vals), 0,
+        NULL, HFILL }},
+    { &hf_rtse_connectionDataAC,
+      { "connectionDataAC", "rtse.connectionDataAC",
+        FT_UINT32, BASE_DEC, VALS(rtse_ConnectionData_vals), 0,
+        "ConnectionData", HFILL }},
+    { &hf_rtse_refuseReason,
+      { "refuseReason", "rtse.refuseReason",
+        FT_INT32, BASE_DEC, VALS(rtse_RefuseReason_vals), 0,
+        NULL, HFILL }},
+    { &hf_rtse_userDataRJ,
+      { "userDataRJ", "rtse.userDataRJ_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_rtse_abortReason,
+      { "abortReason", "rtse.abortReason",
+        FT_INT32, BASE_DEC, VALS(rtse_AbortReason_vals), 0,
+        NULL, HFILL }},
+    { &hf_rtse_reflectedParameter,
+      { "reflectedParameter", "rtse.reflectedParameter",
+        FT_BYTES, BASE_NONE, NULL, 0,
+        "BIT_STRING", HFILL }},
+    { &hf_rtse_userdataAB,
+      { "userdataAB", "rtse.userdataAB_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_rtse_open,
+      { "open", "rtse.open_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_rtse_recover,
+      { "recover", "rtse.recover_element",
+        FT_NONE, BASE_NONE, NULL, 0,
+        "SessionConnectionIdentifier", HFILL }},
+    { &hf_rtse_callingSSuserReference,
+      { "callingSSuserReference", "rtse.callingSSuserReference",
+        FT_UINT32, BASE_DEC, VALS(rtse_CallingSSuserReference_vals), 0,
+        NULL, HFILL }},
+    { &hf_rtse_commonReference,
+      { "commonReference", "rtse.commonReference",
+        FT_STRING, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_rtse_additionalReferenceInformation,
+      { "additionalReferenceInformation", "rtse.additionalReferenceInformation",
+        FT_STRING, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_rtse_t61String,
+      { "t61String", "rtse.t61String",
+        FT_STRING, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_rtse_octetString,
+      { "octetString", "rtse.octetString",
+        FT_BYTES, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+  };
+
+  /* List of subtrees */
+  static gint *ett[] = {
+    &ett_rtse,
+    &ett_rtse_unknown,
+    &ett_rtse_fragment,
+    &ett_rtse_fragments,
+    &ett_rtse_RTSE_apdus,
+    &ett_rtse_RTORQapdu,
+    &ett_rtse_RTOACapdu,
+    &ett_rtse_RTORJapdu,
+    &ett_rtse_RTABapdu,
+    &ett_rtse_ConnectionData,
+    &ett_rtse_SessionConnectionIdentifier,
+    &ett_rtse_CallingSSuserReference,
+  };
+
+  static ei_register_info ei[] = {
+     { &ei_rtse_dissector_oid_not_implemented, { "rtse.dissector_oid_not_implemented", PI_UNDECODED, PI_WARN, "RTSE: Dissector for OID not implemented", EXPFILL }},
+     { &ei_rtse_unknown_rtse_pdu, { "rtse.unknown_rtse_pdu", PI_UNDECODED, PI_WARN, "Unknown RTSE PDU", EXPFILL }},
+     { &ei_rtse_abstract_syntax, { "rtse.bad_abstract_syntax", PI_PROTOCOL, PI_WARN, "Unable to determine abstract syntax for indirect reference", EXPFILL }},
+  };
+
+  expert_module_t* expert_rtse;
+  module_t *rtse_module;
+
+  /* Register protocol */
+  proto_rtse = proto_register_protocol(PNAME, PSNAME, PFNAME);
+  rtse_handle = register_dissector("rtse", dissect_rtse, proto_rtse);
+  /* Register fields and subtrees */
+  proto_register_field_array(proto_rtse, hf, array_length(hf));
+  proto_register_subtree_array(ett, array_length(ett));
+  expert_rtse = expert_register_protocol(proto_rtse);
+  expert_register_field_array(expert_rtse, ei, array_length(ei));
+
+  reassembly_table_register (&rtse_reassembly_table,
+                   &addresses_reassembly_table_functions);
+
+  rtse_module = prefs_register_protocol_subtree("OSI", proto_rtse, NULL);
+
+  prefs_register_bool_preference(rtse_module, "reassemble",
+                 "Reassemble segmented RTSE datagrams",
+                 "Whether segmented RTSE datagrams should be reassembled."
+                 " To use this option, you must also enable"
+                 " \"Allow subdissectors to reassemble TCP streams\""
+                 " in the TCP protocol settings.", &rtse_reassemble);
+
+  rtse_oid_dissector_table = register_dissector_table("rtse.oid", "RTSE OID Dissectors", proto_rtse, FT_STRING, STRING_CASE_SENSITIVE);
+}
+
+
+/*--- proto_reg_handoff_rtse --- */
+void proto_reg_handoff_rtse(void) {
+
+
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */