diff options
author | Anders Broman <anders.broman@ericsson.com> | 2008-09-29 16:28:34 +0000 |
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committer | Anders Broman <anders.broman@ericsson.com> | 2008-09-29 16:28:34 +0000 |
commit | 44a0e364e584ee55d70c1a05d3a2f912b94d0df1 (patch) | |
tree | 2578615b1c580f2bfa66d90ab44d0638048415f3 /epan/dissectors/packet-ayiya.c | |
parent | 637761d295e41c21ba52753f473b6e65a13dca55 (diff) |
From Jelmer Vernooij:
Support for AYIYA protocol.
svn path=/trunk/; revision=26288
Diffstat (limited to 'epan/dissectors/packet-ayiya.c')
-rw-r--r-- | epan/dissectors/packet-ayiya.c | 219 |
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"); +} |