New protocol : PacketCable : PKTC

The AP-REQ and AP_REP packets are partially dissected up to and including the kerberos blob.

work in progress


git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@10916 f5534014-38df-0310-8fa8-9805f1628bb7

1 files changed, 181 insertions, 0 deletions

diff --git a/packet-pktc.c b/packet-pktc.c
new file mode 100644
index 0000000000..5c6a1016d6
--- /dev/null
+++ b/packet-pktc.c
@@ -0,0 +1,181 @@
+/* packet-pktc.c
+ * Declarations of routines for PKTC PacketCable packet disassembly
+ * Ronnie Sahlberg 2004
+ * See the spec: PKT-SP-SEC-I10-040113.pdf
+ *
+ * $Id: packet-pktc.c,v 1.1 2004/05/18 08:22:26 sahlberg Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * 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 <epan/packet.h>
+#include "packet-pktc.h"
+#include "packet-kerberos.h"
+
+#define PKTC_PORT	1293
+
+static int proto_pktc = -1;
+static gint hf_pktc_kmmid = -1;
+static gint hf_pktc_doi = -1;
+static gint hf_pktc_version_major = -1;
+static gint hf_pktc_version_minor = -1;
+static gint hf_pktc_server_nonce = -1;
+
+static gint ett_pktc = -1;
+
+#define KMMID_WAKEUP		0x01
+#define KMMID_AP_REQUEST	0x02
+#define KMMID_AP_REPLY		0x03
+#define KMMID_SEC_PARAM_REC	0x04
+#define KMMID_REKEY		0x05
+#define KMMID_ERROR_REPLY	0x06
+static const value_string kmmid_types[] = {
+    { KMMID_WAKEUP		, "Wake Up" },
+    { KMMID_AP_REQUEST		, "AP Request" },
+    { KMMID_AP_REPLY		, "AP Reply" },
+    { KMMID_SEC_PARAM_REC	, "Security Parameter Recovered" },
+    { KMMID_REKEY		, "Rekey" },
+    { KMMID_ERROR_REPLY		, "Error Reply" },
+    { 0, NULL }
+};
+
+#define DOI_IPSEC	1
+#define DOI_SNMPv3	2
+static const value_string doi_types[] = {
+    { DOI_IPSEC		, "IPSec" },
+    { DOI_SNMPv3	, "SNMPv3" },
+    { 0, NULL }
+};
+
+
+static int
+dissect_pktc_ap_request(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset)
+{
+    tvbuff_t *pktc_tvb;
+    guint32 snonce;
+
+    /* AP Request  kerberos blob */
+    pktc_tvb = tvb_new_subset(tvb, offset, -1, -1); 
+    offset += dissect_kerberos_main(pktc_tvb, pinfo, tree, FALSE);
+
+    /* Server Nonce */
+    snonce=tvb_get_ntohl(tvb, offset);
+    proto_tree_add_uint(tree, hf_pktc_server_nonce, tvb, offset, 4, snonce);
+
+/* XXX  here all the remaining stuff should go */
+    return offset;
+}
+
+static int
+dissect_pktc_ap_reply(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset)
+{
+    tvbuff_t *pktc_tvb;
+
+    /* AP Reply  kerberos blob */
+    pktc_tvb = tvb_new_subset(tvb, offset, -1, -1); 
+    offset += dissect_kerberos_main(pktc_tvb, pinfo, tree, FALSE);
+
+/* XXX  here all the remaining stuff should go */
+    return offset;
+}
+
+static void
+dissect_pktc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+    guint8 kmmid, doi, version;
+    int offset=0;
+    proto_tree *pktc_tree = NULL;
+    proto_item *item = NULL;
+
+    if (check_col(pinfo->cinfo, COL_PROTOCOL))
+        col_set_str(pinfo->cinfo, COL_PROTOCOL, "PKTC");
+
+    if (tree) {
+        item = proto_tree_add_item(tree, proto_pktc, tvb, 0, 3, FALSE);
+        pktc_tree = proto_item_add_subtree(item, ett_pktc);
+    }
+
+    /* key management message id */
+    kmmid=tvb_get_guint8(tvb, offset);
+    proto_tree_add_uint(pktc_tree, hf_pktc_kmmid, tvb, offset, 1, kmmid);
+    offset+=1;
+
+    /* domain of interpretation */
+    doi=tvb_get_guint8(tvb, offset);
+    proto_tree_add_uint(pktc_tree, hf_pktc_doi, tvb, offset, 1, doi);
+    offset+=1;
+    
+    /* version */
+    version=tvb_get_guint8(tvb, offset);
+    proto_tree_add_uint(pktc_tree, hf_pktc_version_major, tvb, offset, 1, (version>>4)&0x0f);
+    proto_tree_add_uint(pktc_tree, hf_pktc_version_minor, tvb, offset, 1, (version)&0x0f);
+    offset+=1;
+
+    switch(kmmid){
+    case KMMID_AP_REQUEST:
+        offset=dissect_pktc_ap_request(pinfo, pktc_tree, tvb, offset);
+        break;
+    case KMMID_AP_REPLY:
+        offset=dissect_pktc_ap_reply(pinfo, pktc_tree, tvb, offset);
+        break;
+    };
+}
+
+void
+proto_register_pktc(void)
+{
+    static hf_register_info hf[] = {
+	{ &hf_pktc_kmmid, {
+	    "Key Management Message ID", "pktc.kmmid", FT_UINT8, BASE_HEX,
+	    VALS(kmmid_types), 0, "Key Management Message ID", HFILL }},
+	{ &hf_pktc_doi, {
+	    "Domain of Interpretation", "pktc.doi", FT_UINT8, BASE_DEC,
+	    VALS(doi_types), 0, "Domain of Interpretation", HFILL }},
+	{ &hf_pktc_version_major, {
+	    "Major version", "pktc.version.major", FT_UINT8, BASE_DEC,
+	    NULL, 0, "Major version of PKTC", HFILL }},
+	{ &hf_pktc_version_minor, {
+	    "Minor version", "pktc.version.minor", FT_UINT8, BASE_DEC,
+	    NULL, 0, "Minor version of PKTC", HFILL }},
+	{ &hf_pktc_server_nonce, {
+	    "Server Nonce", "pktc.server_nonce", FT_UINT32, BASE_HEX,
+	    NULL, 0, "Server Nonce random number", HFILL }},
+    };
+    static gint *ett[] = {
+        &ett_pktc,
+    };
+
+    proto_pktc = proto_register_protocol("PacketCable",
+	"PKTC", "pktc");
+    proto_register_field_array(proto_pktc, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_pktc(void)
+{
+    dissector_handle_t pktc_handle;
+
+    pktc_handle = create_dissector_handle(dissect_pktc, proto_pktc);
+    dissector_add("udp.port", PKTC_PORT, pktc_handle);
+}