diff options
author | morriss <morriss@f5534014-38df-0310-8fa8-9805f1628bb7> | 2009-09-13 23:03:38 +0000 |
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committer | morriss <morriss@f5534014-38df-0310-8fa8-9805f1628bb7> | 2009-09-13 23:03:38 +0000 |
commit | eb8562851222901f7aa0428276d565dc239fdd2e (patch) | |
tree | b48bc9a25a2b4c1773a5e27e24a476b8d3c71bc6 /epan/dissectors/packet-classicstun.c | |
parent | 75adef7e215094a804424dd755801f6e61d1ed54 (diff) |
From Stephane Bryant via https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2815
but (since the patch no longer applied cleanly) essentially manually
re-implemented by me:
Rename "stun" to "classic stun" and "stun2" to "stun", to follow the usage
defined in draft-ietf-behave-rfc3489bis-18 section 2.
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@29884 f5534014-38df-0310-8fa8-9805f1628bb7
Diffstat (limited to 'epan/dissectors/packet-classicstun.c')
-rw-r--r-- | epan/dissectors/packet-classicstun.c | 739 |
1 files changed, 739 insertions, 0 deletions
diff --git a/epan/dissectors/packet-classicstun.c b/epan/dissectors/packet-classicstun.c new file mode 100644 index 0000000000..8634e0d9b2 --- /dev/null +++ b/epan/dissectors/packet-classicstun.c @@ -0,0 +1,739 @@ +/* packet-classicstun.c + * Routines for Simple Traversal of UDP Through NAT dissection + * Copyright 2003, Shiang-Ming Huang <smhuang@pcs.csie.nctu.edu.tw> + * + * $Id$ + * + * 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. + * + * Please refer to RFC 3489 for protocol detail. + * (supports extra message attributes described in draft-ietf-behave-rfc3489bis-00) + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <glib.h> + +#include <epan/packet.h> +#include <epan/conversation.h> + +/* Initialize the protocol and registered fields */ +static int proto_classicstun = -1; + +static int hf_classicstun_type = -1; /* CLASSIC-STUN message header */ +static int hf_classicstun_length = -1; +static int hf_classicstun_id = -1; +static int hf_classicstun_att = -1; +static int hf_classicstun_response_in = -1; +static int hf_classicstun_response_to = -1; +static int hf_classicstun_time = -1; + + +static int classicstun_att_type = -1; /* CLASSIC-STUN attribute fields */ +static int classicstun_att_length = -1; +static int classicstun_att_value = -1; +static int classicstun_att_family = -1; +static int classicstun_att_ipv4 = -1; +static int classicstun_att_ipv6 = -1; +static int classicstun_att_port = -1; +static int classicstun_att_change_ip = -1; +static int classicstun_att_change_port = -1; +static int classicstun_att_unknown = -1; +static int classicstun_att_error_class = -1; +static int classicstun_att_error_number = -1; +static int classicstun_att_error_reason = -1; +static int classicstun_att_server_string = -1; +static int classicstun_att_xor_ipv4 = -1; +static int classicstun_att_xor_ipv6 = -1; +static int classicstun_att_xor_port = -1; +static int classicstun_att_lifetime = -1; +static int classicstun_att_magic_cookie = -1; +static int classicstun_att_bandwidth = -1; +static int classicstun_att_data = -1; +static int classicstun_att_connection_request_binding = -1; + +/* Structure containing transaction specific information */ +typedef struct _classicstun_transaction_t { + guint32 req_frame; + guint32 rep_frame; + nstime_t req_time; +} classicstun_transaction_t; + +/* Structure containing conversation specific information */ +typedef struct _classicstun_conv_info_t { + emem_tree_t *pdus; +} classicstun_conv_info_t; + + +/* Message Types */ +#define BINDING_REQUEST 0x0001 +#define BINDING_RESPONSE 0x0101 +#define BINDING_ERROR_RESPONSE 0x0111 +#define SHARED_SECRET_REQUEST 0x0002 +#define SHARED_SECRET_RESPONSE 0x0102 +#define SHARED_SECRET_ERROR_RESPONSE 0x1112 +#define ALLOCATE_REQUEST 0x0003 +#define ALLOCATE_RESPONSE 0x0103 +#define ALLOCATE_ERROR_RESPONSE 0x0113 +#define SEND_REQUEST 0x0004 +#define SEND_RESPONSE 0x0104 +#define SEND_ERROR_RESPONSE 0x0114 +#define DATA_INDICATION 0x0115 +#define SET_ACTIVE_DESTINATION_REQUEST 0x0006 +#define SET_ACTIVE_DESTINATION_RESPONSE 0x0106 +#define SET_ACTIVE_DESTINATION_ERROR_RESPONSE 0x0116 + + +/* Message classes */ +#define CLASS_MASK 0xC110 +#define REQUEST 0x0000 +#define INDICATION 0x0001 +#define RESPONSE 0x0010 +#define ERROR_RESPONSE 0x0011 + +/* Attribute Types */ +#define MAPPED_ADDRESS 0x0001 +#define RESPONSE_ADDRESS 0x0002 +#define CHANGE_REQUEST 0x0003 +#define SOURCE_ADDRESS 0x0004 +#define CHANGED_ADDRESS 0x0005 +#define USERNAME 0x0006 +#define PASSWORD 0x0007 +#define MESSAGE_INTEGRITY 0x0008 +#define ERROR_CODE 0x0009 +#define UNKNOWN_ATTRIBUTES 0x000a +#define REFLECTED_FROM 0x000b +#define LIFETIME 0x000d +#define ALTERNATE_SERVER 0x000e +#define MAGIC_COOKIE 0x000f +#define BANDWIDTH 0x0010 +#define DESTINATION_ADDRESS 0x0011 +#define REMOTE_ADDRESS 0x0012 +#define DATA 0x0013 +#define NONCE 0x0014 +#define REALM 0x0015 +#define REQUESTED_ADDRESS_TYPE 0x0016 +#define XOR_MAPPED_ADDRESS 0x8020 +#define XOR_ONLY 0x0021 +#define SERVER 0x8022 +#define CONNECTION_REQUEST_BINDING 0xc001 +#define BINDING_CHANGE 0xc002 + + + +/* Initialize the subtree pointers */ +static gint ett_classicstun = -1; +static gint ett_classicstun_att_type = -1; +static gint ett_classicstun_att = -1; + + +#define UDP_PORT_STUN 3478 +#define TCP_PORT_STUN 3478 + + +#define CLASSICSTUN_HDR_LEN ((guint)20) /* CLASSIC-STUN message header length */ +#define ATTR_HDR_LEN 4 /* CLASSIC-STUN attribute header length */ + + +static const true_false_string set_flag = { + "SET", + "NOT SET" +}; + +static const value_string messages[] = { + {BINDING_REQUEST, "Binding Request"}, + {BINDING_RESPONSE, "Binding Response"}, + {BINDING_ERROR_RESPONSE, "Binding Error Response"}, + {SHARED_SECRET_REQUEST, "Shared Secret Request"}, + {SHARED_SECRET_RESPONSE, "Shared Secret Response"}, + {SHARED_SECRET_ERROR_RESPONSE, "Shared Secret Error Response"}, + {ALLOCATE_REQUEST, "Allocate Request"}, + {ALLOCATE_RESPONSE, "Allocate Response"}, + {ALLOCATE_ERROR_RESPONSE, "Allocate Error Response"}, + {SEND_REQUEST, "Send Request"}, + {SEND_RESPONSE, "Send Response"}, + {SEND_ERROR_RESPONSE, "Send Error Response"}, + {DATA_INDICATION, "Data Indication"}, + {SET_ACTIVE_DESTINATION_REQUEST, "Set Active Destination Request"}, + {SET_ACTIVE_DESTINATION_RESPONSE, "Set Active Destination Response"}, + {SET_ACTIVE_DESTINATION_ERROR_RESPONSE, "Set Active Destination Error Response"}, + {0x00, NULL} +}; + +static const value_string attributes[] = { + {MAPPED_ADDRESS, "MAPPED-ADDRESS"}, + {RESPONSE_ADDRESS, "RESPONSE-ADDRESS"}, + {CHANGE_REQUEST, "CHANGE-REQUEST"}, + {SOURCE_ADDRESS, "SOURCE-ADDRESS"}, + {CHANGED_ADDRESS, "CHANGED-ADDRESS"}, + {USERNAME, "USERNAME"}, + {PASSWORD, "PASSWORD"}, + {MESSAGE_INTEGRITY, "MESSAGE-INTEGRITY"}, + {ERROR_CODE, "ERROR-CODE"}, + {REFLECTED_FROM, "REFLECTED-FROM"}, + {LIFETIME, "LIFETIME"}, + {ALTERNATE_SERVER, "ALTERNATE_SERVER"}, + {MAGIC_COOKIE, "MAGIC_COOKIE"}, + {BANDWIDTH, "BANDWIDTH"}, + {DESTINATION_ADDRESS, "DESTINATION_ADDRESS"}, + {REMOTE_ADDRESS, "REMOTE_ADDRESS"}, + {DATA, "DATA"}, + {NONCE, "NONCE"}, + {REALM, "REALM"}, + {REQUESTED_ADDRESS_TYPE, "REQUESTED_ADDRESS_TYPE"}, + {XOR_MAPPED_ADDRESS, "XOR_MAPPED_ADDRESS"}, + {XOR_ONLY, "XOR_ONLY"}, + {SERVER, "SERVER"}, + {CONNECTION_REQUEST_BINDING, "CONNECTION-REQUEST-BINDING"}, + {BINDING_CHANGE, "BINDING-CHANGE"}, + {0x00, NULL} +}; + +static const value_string attributes_family[] = { + {0x0001, "IPv4"}, + {0x0002, "IPv6"}, + {0x00, NULL} +}; + +static int +dissect_classicstun(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + + proto_item *ti; + proto_item *ta; + proto_tree *classicstun_tree; + proto_tree *att_type_tree; + proto_tree *att_tree; + guint16 msg_type; + guint16 msg_length; + const char *msg_type_str; + guint16 att_type; + guint16 att_length; + guint16 offset; + guint len; + guint i; + conversation_t *conversation; + classicstun_conv_info_t *classicstun_info; + classicstun_transaction_t * classicstun_trans; + emem_tree_key_t transaction_id_key[2]; + guint32 transaction_id[4]; + + + /* + * First check if the frame is really meant for us. + */ + len = tvb_length(tvb); + /* First, make sure we have enough data to do the check. */ + if (len < CLASSICSTUN_HDR_LEN) + return 0; + + msg_type = tvb_get_ntohs(tvb, 0); + + if (msg_type & 0xC000 || tvb_get_ntohl(tvb, 4) == 0x2112a442) + return 0; + + /* check if message type is correct */ + msg_type_str = match_strval(msg_type, messages); + if (msg_type_str == NULL) + return 0; + + msg_length = tvb_get_ntohs(tvb, 2); + + /* check if payload enough */ + if (len != CLASSICSTUN_HDR_LEN+msg_length) + return 0; + + /* The message seems to be a valid CLASSIC-STUN message! */ + + /* Create the transaction key which may be used + to track the conversation */ + transaction_id[0] = tvb_get_ntohl(tvb, 4); + transaction_id[1] = tvb_get_ntohl(tvb, 8); + transaction_id[2] = tvb_get_ntohl(tvb, 12); + transaction_id[3] = tvb_get_ntohl(tvb, 16); + + transaction_id_key[0].length = 4; + transaction_id_key[0].key = transaction_id; + transaction_id_key[1].length = 0; + transaction_id_key[1].key = NULL; + + /* + * Do we have a conversation for this connection? + */ + conversation = find_conversation(pinfo->fd->num, + &pinfo->src, &pinfo->dst, + pinfo->ptype, + pinfo->srcport, pinfo->destport, 0); + if (conversation == NULL) { + /* We don't yet have a conversation, so create one. */ + conversation = conversation_new(pinfo->fd->num, + &pinfo->src, &pinfo->dst, + pinfo->ptype, + pinfo->srcport, pinfo->destport, 0); + } + /* + * Do we already have a state structure for this conv + */ + classicstun_info = conversation_get_proto_data(conversation, proto_classicstun); + if (!classicstun_info) { + /* No. Attach that information to the conversation, and add + * it to the list of information structures. + */ + classicstun_info = se_alloc(sizeof(classicstun_conv_info_t)); + classicstun_info->pdus=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "classicstun_pdus"); + conversation_add_proto_data(conversation, proto_classicstun, classicstun_info); + } + + if(!pinfo->fd->flags.visited){ + if (((msg_type & CLASS_MASK) >> 4) == REQUEST) { + /* This is a request */ + classicstun_trans=se_alloc(sizeof(classicstun_transaction_t)); + classicstun_trans->req_frame=pinfo->fd->num; + classicstun_trans->rep_frame=0; + classicstun_trans->req_time=pinfo->fd->abs_ts; + se_tree_insert32_array(classicstun_info->pdus, transaction_id_key, + (void *)classicstun_trans); + } else { + classicstun_trans=se_tree_lookup32_array(classicstun_info->pdus, + transaction_id_key); + if(classicstun_trans){ + classicstun_trans->rep_frame=pinfo->fd->num; + } + } + } else { + classicstun_trans=se_tree_lookup32_array(classicstun_info->pdus, transaction_id_key); + } + if(!classicstun_trans){ + /* create a "fake" pana_trans structure */ + classicstun_trans=ep_alloc(sizeof(classicstun_transaction_t)); + classicstun_trans->req_frame=0; + classicstun_trans->rep_frame=0; + classicstun_trans->req_time=pinfo->fd->abs_ts; + } + + + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "CLASSIC-STUN"); + + if (check_col(pinfo->cinfo, COL_INFO)) { + col_add_fstr(pinfo->cinfo, COL_INFO, "Message: %s", + msg_type_str); + } + + if (tree) { + guint transaction_id_first_word; + + ti = proto_tree_add_item(tree, proto_classicstun, tvb, 0, -1, FALSE); + + classicstun_tree = proto_item_add_subtree(ti, ett_classicstun); + + if (((msg_type & CLASS_MASK) >> 4) == REQUEST) { + if (classicstun_trans->rep_frame) { + proto_item *it; + it=proto_tree_add_uint(classicstun_tree, hf_classicstun_response_in, + tvb, 0, 0, + classicstun_trans->rep_frame); + PROTO_ITEM_SET_GENERATED(it); + } + } + else if ((((msg_type & CLASS_MASK) >> 4) == RESPONSE) || + (((msg_type & CLASS_MASK) >> 4) == ERROR_RESPONSE)) { + /* This is a response */ + if(classicstun_trans->req_frame){ + proto_item *it; + nstime_t ns; + + it=proto_tree_add_uint(classicstun_tree, hf_classicstun_response_to, tvb, 0, 0, classicstun_trans->req_frame); + PROTO_ITEM_SET_GENERATED(it); + + nstime_delta(&ns, &pinfo->fd->abs_ts, &classicstun_trans->req_time); + it=proto_tree_add_time(classicstun_tree, hf_classicstun_time, tvb, 0, 0, &ns); + PROTO_ITEM_SET_GENERATED(it); + } + + } + + proto_tree_add_uint(classicstun_tree, hf_classicstun_type, tvb, 0, 2, msg_type); + proto_tree_add_uint(classicstun_tree, hf_classicstun_length, tvb, 2, 2, msg_length); + proto_tree_add_item(classicstun_tree, hf_classicstun_id, tvb, 4, 16, FALSE); + + /* Remember this (in host order) so we can show clear xor'd addresses */ + transaction_id_first_word = tvb_get_ntohl(tvb, 4); + + if (msg_length > 0) { + ta = proto_tree_add_item(classicstun_tree, hf_classicstun_att, tvb, CLASSICSTUN_HDR_LEN, msg_length, FALSE); + att_type_tree = proto_item_add_subtree(ta, ett_classicstun_att_type); + + offset = CLASSICSTUN_HDR_LEN; + + while( msg_length > 0) { + att_type = tvb_get_ntohs(tvb, offset); /* Type field in attribute header */ + att_length = tvb_get_ntohs(tvb, offset+2); /* Length field in attribute header */ + + ta = proto_tree_add_text(att_type_tree, tvb, offset, + ATTR_HDR_LEN+att_length, + "Attribute: %s", + val_to_str(att_type, attributes, "Unknown (0x%04x)")); + att_tree = proto_item_add_subtree(ta, ett_classicstun_att); + + proto_tree_add_uint(att_tree, classicstun_att_type, tvb, + offset, 2, att_type); + offset += 2; + if (ATTR_HDR_LEN+att_length > msg_length) { + proto_tree_add_uint_format(att_tree, + classicstun_att_length, tvb, offset, 2, + att_length, + "Attribute Length: %u (bogus, goes past the end of the message)", + att_length); + break; + } + proto_tree_add_uint(att_tree, classicstun_att_length, tvb, + offset, 2, att_length); + offset += 2; + switch( att_type ){ + case MAPPED_ADDRESS: + case RESPONSE_ADDRESS: + case SOURCE_ADDRESS: + case CHANGED_ADDRESS: + case REFLECTED_FROM: + case ALTERNATE_SERVER: + case DESTINATION_ADDRESS: + case REMOTE_ADDRESS: + if (att_length < 2) + break; + proto_tree_add_item(att_tree, classicstun_att_family, tvb, offset+1, 1, FALSE); + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_port, tvb, offset+2, 2, FALSE); + switch( tvb_get_guint8(tvb, offset+1) ){ + case 1: + if (att_length < 8) + break; + proto_tree_add_item(att_tree, classicstun_att_ipv4, tvb, offset+4, 4, FALSE); + break; + + case 2: + if (att_length < 20) + break; + proto_tree_add_item(att_tree, classicstun_att_ipv6, tvb, offset+4, 16, FALSE); + break; + } + break; + + case CHANGE_REQUEST: + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_change_ip, tvb, offset, 4, FALSE); + proto_tree_add_item(att_tree, classicstun_att_change_port, tvb, offset, 4, FALSE); + break; + + case USERNAME: + case PASSWORD: + case MESSAGE_INTEGRITY: + case NONCE: + case REALM: + if (att_length < 1) + break; + proto_tree_add_item(att_tree, classicstun_att_value, tvb, offset, att_length, FALSE); + break; + + case ERROR_CODE: + if (att_length < 3) + break; + proto_tree_add_item(att_tree, classicstun_att_error_class, tvb, offset+2, 1, FALSE); + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_error_number, tvb, offset+3, 1, FALSE); + if (att_length < 5) + break; + proto_tree_add_item(att_tree, classicstun_att_error_reason, tvb, offset+4, (att_length-4), FALSE); + break; + + case LIFETIME: + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_lifetime, tvb, offset, 4, FALSE); + break; + + case MAGIC_COOKIE: + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_magic_cookie, tvb, offset, 4, FALSE); + break; + + case BANDWIDTH: + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_bandwidth, tvb, offset, 4, FALSE); + break; + + case DATA: + proto_tree_add_item(att_tree, classicstun_att_data, tvb, offset, att_length, FALSE); + break; + + case UNKNOWN_ATTRIBUTES: + for (i = 0; i < att_length; i += 4) { + proto_tree_add_item(att_tree, classicstun_att_unknown, tvb, offset+i, 2, FALSE); + proto_tree_add_item(att_tree, classicstun_att_unknown, tvb, offset+i+2, 2, FALSE); + } + break; + + case SERVER: + proto_tree_add_item(att_tree, classicstun_att_server_string, tvb, offset, att_length, FALSE); + break; + + case XOR_MAPPED_ADDRESS: + if (att_length < 2) + break; + proto_tree_add_item(att_tree, classicstun_att_family, tvb, offset+1, 1, FALSE); + if (att_length < 4) + break; + proto_tree_add_item(att_tree, classicstun_att_xor_port, tvb, offset+2, 2, FALSE); + + /* Show the port 'in the clear' + XOR (host order) transid with (host order) xor-port. + Add host-order port into tree. */ + ti = proto_tree_add_uint(att_tree, classicstun_att_port, tvb, offset+2, 2, + tvb_get_ntohs(tvb, offset+2) ^ + (transaction_id_first_word >> 16)); + PROTO_ITEM_SET_GENERATED(ti); + + if (att_length < 8) + break; + switch( tvb_get_guint8(tvb, offset+1) ){ + case 1: + if (att_length < 8) + break; + proto_tree_add_item(att_tree, classicstun_att_xor_ipv4, tvb, offset+4, 4, FALSE); + + /* Show the address 'in the clear'. + XOR (host order) transid with (host order) xor-address. + Add in network order tree. */ + ti = proto_tree_add_ipv4(att_tree, classicstun_att_ipv4, tvb, offset+4, 4, + g_htonl(tvb_get_ntohl(tvb, offset+4) ^ + transaction_id_first_word)); + PROTO_ITEM_SET_GENERATED(ti); + break; + + case 2: + if (att_length < 20) + break; + proto_tree_add_item(att_tree, classicstun_att_xor_ipv6, tvb, offset+4, 16, FALSE); + break; + } + break; + + case REQUESTED_ADDRESS_TYPE: + if (att_length < 2) + break; + proto_tree_add_item(att_tree, classicstun_att_family, tvb, offset+1, 1, FALSE); + break; + + case CONNECTION_REQUEST_BINDING: + proto_tree_add_item(att_tree, classicstun_att_connection_request_binding, tvb, offset, att_length, FALSE); + break; + + default: + break; + } + offset += att_length; + msg_length -= ATTR_HDR_LEN+att_length; + } + } + } + return tvb_length(tvb); +} + + +static gboolean +dissect_classicstun_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + if (dissect_classicstun(tvb, pinfo, tree) == 0) + return FALSE; + + return TRUE; +} + + + + +void +proto_register_classicstun(void) +{ + static hf_register_info hf[] = { + { &hf_classicstun_type, + { "Message Type", "classicstun.type", FT_UINT16, + BASE_HEX, VALS(messages), 0x0, NULL, HFILL } + }, + { &hf_classicstun_length, + { "Message Length", "classicstun.length", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL } + }, + { &hf_classicstun_id, + { "Message Transaction ID", "classicstun.id", FT_BYTES, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &hf_classicstun_att, + { "Attributes", "classicstun.att", FT_NONE, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &hf_classicstun_response_in, + { "Response In", "classicstun.response_in", + FT_FRAMENUM, BASE_NONE, NULL, 0x0, + "The response to this CLASSICSTUN query is in this frame", HFILL }}, + { &hf_classicstun_response_to, + { "Request In", "classicstun.response_to", + FT_FRAMENUM, BASE_NONE, NULL, 0x0, + "This is a response to the CLASSICSTUN Request in this frame", HFILL }}, + { &hf_classicstun_time, + { "Time", "classicstun.time", + FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, + "The time between the Request and the Response", HFILL }}, + + /* ////////////////////////////////////// */ + { &classicstun_att_type, + { "Attribute Type", "classicstun.att.type", FT_UINT16, + BASE_HEX, VALS(attributes), 0x0, NULL, HFILL } + }, + { &classicstun_att_length, + { "Attribute Length", "classicstun.att.length", FT_UINT16, + BASE_DEC, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_value, + { "Value", "classicstun.att.value", FT_BYTES, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_family, + { "Protocol Family", "classicstun.att.family", FT_UINT16, + BASE_HEX, VALS(attributes_family), 0x0, NULL, HFILL } + }, + { &classicstun_att_ipv4, + { "IP", "classicstun.att.ipv4", FT_IPv4, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_ipv6, + { "IP", "classicstun.att.ipv6", FT_IPv6, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_port, + { "Port", "classicstun.att.port", FT_UINT16, + BASE_DEC, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_change_ip, + { "Change IP","classicstun.att.change.ip", FT_BOOLEAN, + 16, TFS(&set_flag), 0x0004, NULL, HFILL} + }, + { &classicstun_att_change_port, + { "Change Port","classicstun.att.change.port", FT_BOOLEAN, + 16, TFS(&set_flag), 0x0002, NULL, HFILL} + }, + { &classicstun_att_unknown, + { "Unknown Attribute","classicstun.att.unknown", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL} + }, + { &classicstun_att_error_class, + { "Error Class","classicstun.att.error.class", FT_UINT8, + BASE_DEC, NULL, 0x07, NULL, HFILL} + }, + { &classicstun_att_error_number, + { "Error Code","classicstun.att.error", FT_UINT8, + BASE_DEC, NULL, 0x0, NULL, HFILL} + }, + { &classicstun_att_error_reason, + { "Error Reason Phase","classicstun.att.error.reason", FT_STRING, + BASE_NONE, NULL, 0x0, NULL, HFILL} + }, + { &classicstun_att_xor_ipv4, + { "IP (XOR-d)", "classicstun.att.ipv4-xord", FT_IPv4, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_xor_ipv6, + { "IP (XOR-d)", "classicstun.att.ipv6-xord", FT_IPv6, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_xor_port, + { "Port (XOR-d)", "classicstun.att.port-xord", FT_UINT16, + BASE_DEC, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_server_string, + { "Server version","classicstun.att.server", FT_STRING, + BASE_NONE, NULL, 0x0, NULL, HFILL} + }, + { &classicstun_att_lifetime, + { "Lifetime", "classicstun.att.lifetime", FT_UINT32, + BASE_DEC, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_magic_cookie, + { "Magic Cookie", "classicstun.att.magic.cookie", FT_UINT32, + BASE_HEX, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_bandwidth, + { "Bandwidth", "classicstun.att.bandwidth", FT_UINT32, + BASE_DEC, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_data, + { "Data", "classicstun.att.data", FT_BYTES, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + { &classicstun_att_connection_request_binding, + { "Connection Request Binding", "classicstun.att.connection_request_binding", FT_STRING, + BASE_NONE, NULL, 0x0, NULL, HFILL } + }, + }; + +/* Setup protocol subtree array */ + static gint *ett[] = { + &ett_classicstun, + &ett_classicstun_att_type, + &ett_classicstun_att, + }; + +/* Register the protocol name and description */ + proto_classicstun = proto_register_protocol("Simple Traversal of UDP Through NAT", + "CLASSICSTUN", "classicstun"); + +/* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_classicstun, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + new_register_dissector("classicstun", dissect_classicstun, proto_classicstun); + new_register_dissector("classicstun-heur", dissect_classicstun_heur, proto_classicstun); +} + + +void +proto_reg_handoff_classicstun(void) +{ +#if 0 /* The stun dissector registers on these ports */ + dissector_handle_t classicstun_handle; + + classicstun_handle = find_dissector("classicstun"); + + dissector_add("tcp.port", TCP_PORT_STUN, classicstun_handle); + dissector_add("udp.port", UDP_PORT_STUN, classicstun_handle); +#endif + heur_dissector_add("udp", dissect_classicstun_heur, proto_classicstun); + heur_dissector_add("tcp", dissect_classicstun_heur, proto_classicstun); +} |