1 files changed, 204 insertions, 0 deletions
diff --git a/asn1/t124/packet-t124-template.c b/asn1/t124/packet-t124-template.c
new file mode 100644
index 0000000000..aa1e466a35
--- /dev/null
+++ b/asn1/t124/packet-t124-template.c
@@ -0,0 +1,204 @@
+/* packet-t124.c
+ * Routines for t124 packet dissection
+ * Copyright 2010, Graeme Lunt
+ *
+ * $Id$
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <glib.h>
+#include <epan/packet.h>
+#include <epan/conversation.h>
+
+#include <epan/asn1.h>
+#include "packet-per.h"
+#include "packet-ber.h"
+#include "packet-t124.h"
+
+#define PNAME  "GENERIC-CONFERENCE-CONTROL T.124"
+#define PSNAME "T.124"
+#define PFNAME "t124"
+
+/* Initialize the protocol and registered fields */
+static int proto_t124 = -1;
+static proto_tree *top_tree = NULL;
+
+#include "packet-t124-hf.c"
+
+/* Initialize the subtree pointers */
+static int ett_t124 = -1;
+static int ett_t124_connectGCCPDU = -1;
+
+static int hf_t124_ConnectData = -1;
+static int hf_t124_connectGCCPDU = -1;
+static int hf_t124_DomainMCSPDU_PDU = -1;
+
+static guint32 channelId = -1;
+
+static const char *t124Identifier = NULL; /* extensions identifier */
+static tvbuff_t *t124NSIdentifier = NULL; /* extensions non-standard identifier */
+static dissector_table_t t124_ns_dissector_table=NULL;
+static dissector_table_t t124_sd_dissector_table=NULL;
+
+#include "packet-t124-ett.c"
+
+#include "packet-t124-fn.c"
+
+static const per_sequence_t t124Heur_sequence[] = {
+  { &hf_t124_t124Identifier , ASN1_NO_EXTENSIONS     , ASN1_NOT_OPTIONAL, dissect_t124_Key },
+  { NULL, 0, 0, NULL }
+};
+
+void
+register_t124_ns_dissector(const char *nsKey, dissector_t dissector, int proto)
+{
+  dissector_handle_t dissector_handle;
+
+  dissector_handle=create_dissector_handle(dissector, proto);
+  dissector_add_string("t124.ns", nsKey, dissector_handle);
+}
+
+void register_t124_sd_dissector(packet_info *pinfo _U_, guint32 channelId, dissector_t dissector, int proto)
+{
+  /* XXX: we should keep the sub-dissectors list per conversation
+     as the same channels may be used. 
+     While we are just using RDP over T.124, then we can get away with it.
+  */
+
+  dissector_handle_t dissector_handle;
+
+  dissector_handle=create_dissector_handle(dissector, proto);
+  dissector_add_uint("t124.sd", channelId, dissector_handle);
+
+}
+
+guint32 t124_get_last_channelId(void)
+{
+  return channelId;
+}
+
+void t124_set_top_tree(proto_tree *tree)
+{
+  top_tree = tree;
+}
+
+int dissect_DomainMCSPDU_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
+  int offset = 0;
+  asn1_ctx_t asn1_ctx;
+  asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
+
+  offset = dissect_t124_DomainMCSPDU(tvb, offset, &asn1_ctx, tree, hf_t124_DomainMCSPDU_PDU);
+  offset += 7; offset >>= 3;
+  return offset;
+}
+
+static int
+dissect_t124(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *parent_tree)
+{
+  proto_item *item = NULL;
+  proto_tree *tree = NULL;
+  asn1_ctx_t asn1_ctx;
+
+  top_tree = parent_tree;
+
+  col_set_str(pinfo->cinfo, COL_PROTOCOL, "T.125");
+  col_clear(pinfo->cinfo, COL_INFO);
+
+  item = proto_tree_add_item(parent_tree, proto_t124, tvb, 0, tvb_length(tvb), FALSE);
+  tree = proto_item_add_subtree(item, ett_t124);
+
+  asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
+  dissect_t124_ConnectData(tvb, 0, &asn1_ctx, tree, hf_t124_ConnectData);
+
+  return tvb_length(tvb);
+}
+
+static gboolean
+dissect_t124_heur(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *parent_tree)
+{
+  asn1_ctx_t asn1_ctx;
+
+  asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
+
+  t124Identifier = NULL;
+
+  (void) dissect_per_sequence(tvb, 0, &asn1_ctx, NULL, -1, -1, t124Heur_sequence);
+
+  if((t124Identifier != NULL) && 
+     (strcmp(t124Identifier, "0.0.20.124.0.1") == 0)) {
+
+    dissect_t124(tvb, pinfo, parent_tree);
+
+  }
+
+  return FALSE;
+}
+
+/*--- proto_register_t124 -------------------------------------------*/
+void proto_register_t124(void) {
+
+  /* List of fields */
+  static hf_register_info hf[] = {
+    { &hf_t124_ConnectData,
+      { "ConnectData", "t124.ConnectData",
+        FT_NONE, BASE_NONE, NULL, 0,
+        NULL, HFILL }},
+    { &hf_t124_connectGCCPDU,
+      { "connectGCCPDU", "t124.connectGCCPDU",
+        FT_UINT32, BASE_DEC, VALS(t124_ConnectGCCPDU_vals), 0,
+        NULL, HFILL }},
+    { &hf_t124_DomainMCSPDU_PDU,
+      { "DomainMCSPDU", "t124.DomainMCSPDU",
+        FT_UINT32, BASE_DEC, VALS(t124_DomainMCSPDU_vals), 0,
+        NULL, HFILL }},
+#include "packet-t124-hfarr.c"
+  };
+
+  /* List of subtrees */
+  static gint *ett[] = {
+	  &ett_t124,
+	  &ett_t124_connectGCCPDU,
+#include "packet-t124-ettarr.c"
+  };
+
+  /* Register protocol */
+  proto_t124 = proto_register_protocol(PNAME, PSNAME, PFNAME);
+  /* Register fields and subtrees */
+  proto_register_field_array(proto_t124, hf, array_length(hf));
+  proto_register_subtree_array(ett, array_length(ett));
+
+  t124_ns_dissector_table = register_dissector_table("t124.ns", "T.124 H.221 Non Standard Dissectors", FT_STRING, BASE_NONE);
+  t124_sd_dissector_table = register_dissector_table("t124.sd", "T.124 H.221 Send Data Dissectors", FT_UINT32, BASE_NONE);
+
+  new_register_dissector("t124", dissect_t124, proto_t124);
+}
+
+proto_reg_handoff_t124(void) {
+
+  register_ber_oid_dissector("0.0.20.124.0.1", dissect_t124, proto_t124, "Generic Conference Control");
+
+  heur_dissector_add("t125", dissect_t124_heur, proto_t124);
+
+}