swIPe IP Security Protocol

bug:9996
Change-Id: I7c7ab7dfa81e44d6bf9affe7bfb0cd9f0a221adf
Reviewed-on: https://code.wireshark.org/review/1379
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>

3 files changed, 148 insertions, 0 deletions

diff --git a/epan/CMakeLists.txt b/epan/CMakeLists.txt
index 93bd7c22ca..cfe744c25e 100644
--- a/epan/CMakeLists.txt
+++ b/epan/CMakeLists.txt
@@ -1231,6 +1231,7 @@ set(DISSECTOR_SRC
 	dissectors/packet-stat.c
 	dissectors/packet-stun.c
 	dissectors/packet-sua.c
+	dissectors/packet-swipe.c
 	dissectors/packet-symantec.c
 	dissectors/packet-sync.c
 	dissectors/packet-synergy.c
diff --git a/epan/dissectors/Makefile.common b/epan/dissectors/Makefile.common
index 95f2abff83..24a5a6a525 100644
--- a/epan/dissectors/Makefile.common
+++ b/epan/dissectors/Makefile.common
@@ -1151,6 +1151,7 @@ DISSECTOR_SRC = \
 	packet-stat.c		\
 	packet-stun.c		\
 	packet-sua.c		\
+	packet-swipe.c		\
 	packet-symantec.c	\
 	packet-sync.c		\
 	packet-synergy.c	\
diff --git a/epan/dissectors/packet-swipe.c b/epan/dissectors/packet-swipe.c
new file mode 100644
index 0000000000..962734e003
--- /dev/null
+++ b/epan/dissectors/packet-swipe.c
@@ -0,0 +1,146 @@
+/* packet-swipe.c
+ * swIPe IP Security Protocol
+ *
+ * http://www.crypto.com/papers/swipe.id.txt
+ *
+ * Copyright 2014 by Michael Mann
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/ipproto.h>
+
+void proto_register_swipe(void);
+void proto_reg_handoff_swipe(void);
+
+/* Routing Header Types */
+static const value_string swipe_packet_type_vals[] = {
+    { 0, "Plain encapsulation" },
+    { 1, "Packet is authenticated but not encrypted" },
+    { 2, "Packet is encrypted" },
+    { 3, "Packet is both authenticated and encrypted" },
+    { 0, NULL }
+};
+
+/* Initialize the protocol and registered fields */
+static int proto_swipe             = -1;
+
+static int hf_swipe_packet_type    = -1;
+static int hf_swipe_len            = -1;
+static int hf_swipe_policy_id      = -1;
+static int hf_swipe_packet_seq     = -1;
+static int hf_swipe_authenticator  = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_swipe              = -1;
+
+static dissector_handle_t ipv6_handle;
+
+static int
+dissect_swipe(tvbuff_t *tvb, packet_info * pinfo, proto_tree *tree, void* data _U_)
+{
+    int             header_len, offset = 0;
+    proto_tree      *swipe_tree;
+    proto_item      *ti;
+    tvbuff_t        *next_tvb;
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "swIPe");
+    col_clear(pinfo->cinfo, COL_INFO);
+
+    header_len = tvb_get_guint8(tvb, offset + 1);
+    if (tree)
+    {
+        ti = proto_tree_add_item(tree, proto_swipe, tvb, offset, header_len, ENC_NA);
+        swipe_tree = proto_item_add_subtree(ti, ett_swipe);
+
+        /* Packet Type */
+        proto_tree_add_item(swipe_tree, hf_swipe_packet_type, tvb, offset, 1, ENC_NA);
+
+        /* Header Length */
+        proto_tree_add_item(swipe_tree, hf_swipe_len, tvb, offset + 1, 1, ENC_NA);
+
+        /* Policy ID */
+        proto_tree_add_item(swipe_tree, hf_swipe_policy_id, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
+
+        /* Packet Sequence Number */
+        proto_tree_add_item(swipe_tree, hf_swipe_packet_seq, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
+
+        if (header_len > 8)
+            proto_tree_add_item(swipe_tree, hf_swipe_authenticator, tvb, offset + 8, header_len - 8, ENC_NA);
+    }
+
+    next_tvb = tvb_new_subset_remaining(tvb, header_len);
+    call_dissector(ipv6_handle, next_tvb, pinfo, tree);
+
+    return tvb_captured_length(tvb);
+}
+
+/* Register the protocol with Wireshark */
+void
+proto_register_swipe(void)
+{
+
+    /* Setup list of header fields */
+    static hf_register_info hf[] = {
+        { &hf_swipe_packet_type,      { "Packet type",      "swipe.packet_type",      FT_UINT8, BASE_DEC, VALS(swipe_packet_type_vals), 0x0, NULL, HFILL } },
+        { &hf_swipe_len,     { "Header Length",     "swipe.len",     FT_UINT8,  BASE_DEC, NULL,                      0x0, NULL, HFILL } },
+        { &hf_swipe_policy_id,    { "Policy identifier",    "swipe.policy_id",    FT_UINT16, BASE_DEC, NULL,                      0x0, NULL, HFILL } },
+        { &hf_swipe_packet_seq,     { "Packet sequence number",     "swipe.packet_seq",     FT_UINT32, BASE_DEC, NULL,                      0x0, NULL, HFILL } },
+        { &hf_swipe_authenticator,   { "Authenticator",   "swipe.authenticator",   FT_BYTES, BASE_NONE, NULL,                      0x0, NULL, HFILL } },
+    };
+
+    /* Setup protocol subtree array */
+    static gint *ett[] = {
+        &ett_swipe
+    };
+
+    /* Register the protocol name and description */
+    proto_swipe = proto_register_protocol("swIPe IP Security Protocol", "swIPe", "swipe");
+
+    /* Required function calls to register the header fields and subtrees used */
+    proto_register_field_array(proto_swipe, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_swipe(void)
+{
+    dissector_handle_t swipe_handle;
+
+    swipe_handle = new_create_dissector_handle(dissect_swipe, proto_swipe );
+    dissector_add_uint("ip.proto", IP_PROTO_SWIPE, swipe_handle);
+
+    ipv6_handle = find_dissector("ipv6");
+}
+
+/*
+ * Editor modelines
+ *
+ * Local Variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */