From Jelmer Vernooij:

Support for AYIYA protocol.

svn path=/trunk/; revision=26288

1 files changed, 219 insertions, 0 deletions

diff --git a/epan/dissectors/packet-ayiya.c b/epan/dissectors/packet-ayiya.c
new file mode 100644
index 0000000000..c57f087c50
--- /dev/null
+++ b/epan/dissectors/packet-ayiya.c
@@ -0,0 +1,219 @@
+/* packet-ayiya.c
+ * Anything in Anything protocol
+ * Copyright 2008, Jelmer Vernooij <jelmer@samba.org>
+ *
+ * $Id$
+ *
+ * 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.
+ *
+ * ref: http://unfix.org/~jeroen/archive/drafts/draft-massar-v6ops-ayiya-02.html#anchor4
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#include <string.h>
+#include <glib.h>
+#include <epan/packet.h>
+#include <epan/ipproto.h>
+#include <epan/strutil.h>
+
+static dissector_table_t ip_dissector_table;
+
+static int proto_ayiya = -1;
+static int hf_id_len = -1;
+static int hf_id_type = -1;
+static int hf_sig_len = -1;
+static int hf_hash_method = -1;
+static int hf_auth_method = -1;
+static int hf_opcode = -1;
+static int hf_next_header = -1;
+static int hf_epoch = -1;
+static int hf_identity = -1;
+static int hf_signature = -1;
+
+static gint ett_ayiya = -1;
+
+static const value_string identity_types[] = {
+	{ 0x0, "None" },
+	{ 0x1, "Integer" },
+	{ 0x2, "ASCII string" },
+	{ 0, NULL }
+};
+
+static const value_string hash_methods[] = {
+	{ 0x0, "No hash" },
+	{ 0x1, "MD5" },
+	{ 0x2, "SHA1" },
+	{ 0, NULL }
+};
+
+static const value_string auth_methods[] = {
+	{ 0x0, "No authentication" },
+	{ 0x1, "Hash using a Shared Secret" },
+	{ 0x2, "Hash using a public/private key method" },
+	{ 0, NULL }
+};
+
+#define OPCODE_FORWARD 1
+
+static const value_string opcodes[] = {
+	{ 0x0, "No Operation / Heartbeat" },
+	{ 0x1, "Forward" },
+	{ 0x2, "Echo Request" },
+	{ 0x3, "Echo Request and Forward" },
+	{ 0x4, "Echo Response" },
+	{ 0x5, "MOTD" },
+	{ 0x6, "Query Request" },
+	{ 0x7, "Query Response" },
+	{ 0, NULL }
+};
+
+#define UDP_PORT_AYIYA			5072
+
+static void
+dissect_ayiya(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	proto_tree *ayiya_tree;
+	int offset = 0;
+	int idlen, siglen, ayiya_len;
+	guint8 next_header, opcode;
+	tvbuff_t *payload;
+
+	idlen = 1 << tvb_get_bits8(tvb, 0, 4);
+	siglen = tvb_get_bits8(tvb, 8, 4) * 4;
+	opcode = tvb_get_bits8(tvb, 20, 4);
+	next_header = tvb_get_guint8(tvb, 3);
+
+	ayiya_len = 8+idlen+siglen;
+
+	if (check_col(pinfo->cinfo, COL_PROTOCOL))
+		col_set_str(pinfo->cinfo, COL_PROTOCOL, "AYIYA");
+
+	if (tree) {
+		proto_item *ti;
+		nstime_t tv;
+		ti = proto_tree_add_protocol_format( tree, proto_ayiya, tvb,
+											 offset, ayiya_len, "AYIYA" );
+		ayiya_tree = proto_item_add_subtree(ti, ett_ayiya);
+
+		proto_tree_add_bits_item(ayiya_tree, hf_id_len, tvb, 0, 4, FALSE);
+		proto_tree_add_bits_item(ayiya_tree, hf_id_type, tvb, 4, 4, FALSE);
+		proto_tree_add_bits_item(ayiya_tree, hf_sig_len, tvb, 8, 4, FALSE);
+		proto_tree_add_bits_item(ayiya_tree, hf_hash_method, tvb, 12, 4, FALSE);
+		proto_tree_add_bits_item(ayiya_tree, hf_auth_method, tvb, 16, 4, FALSE);
+		proto_tree_add_bits_item(ayiya_tree, hf_opcode, tvb, 20, 4, FALSE);
+		proto_tree_add_uint_format(ayiya_tree, hf_next_header, tvb,
+								   3, 1, next_header, 
+								   "Next header: %s (0x%02x)", 
+								   ipprotostr(next_header), next_header);
+		tv.secs = tvb_get_ntohl(tvb, 4);
+		tv.nsecs = 0;
+		proto_tree_add_time(ayiya_tree, hf_epoch, tvb, 4, 4, &tv);
+		proto_tree_add_item(ayiya_tree, hf_identity, tvb, 8, idlen, FALSE);
+		proto_tree_add_item(ayiya_tree, hf_signature, tvb, 8+idlen, siglen, FALSE);
+	}
+	offset = ayiya_len;
+	switch (opcode) {
+	case OPCODE_FORWARD:
+		payload = tvb_new_subset(tvb, offset, -1, -1);
+		dissector_try_port(ip_dissector_table, next_header, payload, pinfo, tree);
+		break;
+	}
+}
+
+void
+proto_register_ayiya(void)
+{
+  static hf_register_info hf[] = {
+  	{ &hf_id_len,
+		{ "Identity field length", "ayiya.idlen", FT_UINT8, 
+			BASE_HEX, NULL, 0x0, "", HFILL
+		}
+	},
+  	{ &hf_id_type,
+		{ "Identity field type", "ayiya.idtype", FT_UINT8, 
+			BASE_HEX, VALS(identity_types), 0x0, "", HFILL
+		}
+	},
+  	{ &hf_sig_len,
+		{ "Signature Length", "ayiya.siglen", FT_UINT8, 
+			BASE_HEX, NULL, 0x0, "", HFILL
+		}
+	},
+  	{ &hf_hash_method,
+		{ "Hash method", "ayiya.hashmethod", FT_UINT8, 
+			BASE_HEX, VALS(hash_methods), 0x0, "", HFILL
+		}
+	},
+  	{ &hf_auth_method,
+		{ "Authentication method", "ayiya.authmethod", FT_UINT8, 
+			BASE_HEX, VALS(auth_methods), 0x0, "", HFILL
+		}
+	},
+  	{ &hf_opcode,
+		{ "Operation Code", "ayiya.opcode", FT_UINT8, 
+			BASE_HEX, VALS(opcodes), 0x0, "", HFILL
+		}
+	},
+  	{ &hf_next_header,
+		{ "Next Header", "ayiya.nextheader", FT_UINT8, 
+			BASE_HEX, NULL, 0x0, "", HFILL
+		}
+	},
+  	{ &hf_epoch,
+		{ "Epoch", "ayiya.epoch", FT_ABSOLUTE_TIME, 
+			BASE_HEX, NULL, 0x0, "", HFILL
+		}
+	},
+  	{ &hf_identity,
+		{ "Identity", "ayiya.identity", FT_BYTES, 
+			BASE_HEX, NULL, 0x0, "", HFILL
+		}
+	},
+	{ &hf_signature,
+		{ "Signature", "ayiya.signature", FT_BYTES, 
+			BASE_HEX, NULL, 0x0, "", HFILL
+		}
+	},
+  };
+  static gint *ett[] = {
+    &ett_ayiya,
+  };
+
+  proto_ayiya = proto_register_protocol("Anything in Anything Protocol",
+				       "AYIYA", "ayiya");
+  register_dissector("ayiya", dissect_ayiya, proto_ayiya);
+  proto_register_field_array(proto_ayiya, hf, array_length(hf));
+  proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_ayiya(void)
+{
+  dissector_handle_t ayiya_handle;
+
+  ayiya_handle = create_dissector_handle(dissect_ayiya, proto_ayiya);
+  dissector_add("udp.port", UDP_PORT_AYIYA, ayiya_handle);
+  
+  ip_dissector_table = find_dissector_table("ip.proto");
+}