/* packet-atalk.c * Routines for Appletalk packet disassembly (DDP, currently). * * $Id: packet-atalk.c,v 1.61 2002/01/20 22:12:25 guy Exp $ * * Simon Wilkinson * * Ethereal - Network traffic analyzer * By Gerald Combs * Copyright 1998 * * 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 #ifdef HAVE_SYS_TYPES_H # include #endif #ifdef HAVE_NETINET_IN_H # include #endif #include #include "packet.h" #include "etypes.h" #include "ppptypes.h" #include "aftypes.h" #include "atalk-utils.h" static int proto_llap = -1; static int hf_llap_dst = -1; static int hf_llap_src = -1; static int hf_llap_type = -1; static int proto_ddp = -1; static int hf_ddp_hopcount = -1; static int hf_ddp_len = -1; static int hf_ddp_checksum = -1; static int hf_ddp_dst_net = -1; static int hf_ddp_src_net = -1; static int hf_ddp_dst_node = -1; static int hf_ddp_src_node = -1; static int hf_ddp_dst_socket = -1; static int hf_ddp_src_socket = -1; static int hf_ddp_type = -1; static int proto_nbp = -1; static int hf_nbp_op = -1; static int hf_nbp_info = -1; static int hf_nbp_count = -1; static int hf_nbp_tid = -1; static int hf_nbp_node_net = -1; static int hf_nbp_node_port = -1; static int hf_nbp_node_node = -1; static int hf_nbp_node_enum = -1; static int hf_nbp_node_object = -1; static int hf_nbp_node_type = -1; static int hf_nbp_node_zone = -1; static int proto_rtmp = -1; static int hf_rtmp_net = -1; static int hf_rtmp_node_len = -1; static int hf_rtmp_node = -1; static int hf_rtmp_tuple_net = -1; static int hf_rtmp_tuple_range_start = -1; static int hf_rtmp_tuple_range_end = -1; static int hf_rtmp_tuple_dist = -1; static int hf_rtmp_function = -1; static gint ett_nbp = -1; static gint ett_nbp_info = -1; static gint ett_nbp_node = -1; static gint ett_rtmp = -1; static gint ett_rtmp_tuple = -1; static gint ett_ddp = -1; static gint ett_llap = -1; static gint ett_pstring = -1; static dissector_table_t ddp_dissector_table; static dissector_handle_t data_handle; #define DDP_SHORT_HEADER_SIZE 5 /* * P = Padding, H = Hops, L = Len * * PPHHHHLL LLLLLLLL * * Assumes the argument is in host byte order. */ #define ddp_hops(x) ( ( x >> 10) & 0x3C ) #define ddp_len(x) ( x & 0x03ff ) typedef struct _e_ddp { guint16 hops_len; /* combines pad, hops, and len */ guint16 sum,dnet,snet; guint8 dnode,snode; guint8 dport,sport; guint8 type; } e_ddp; #define DDP_HEADER_SIZE 13 static const value_string op_vals[] = { {DDP_RTMPDATA, "AppleTalk Routing Table response or data" }, {DDP_NBP, "AppleTalk Name Binding Protocol packet"}, {DDP_ATP, "AppleTalk Transaction Protocol packet"}, {DDP_AEP, "AppleTalk Echo Protocol packet"}, {DDP_RTMPREQ, "AppleTalk Routing Table request"}, {DDP_ZIP, "AppleTalk Zone Information Protocol packet"}, {DDP_ADSP, "AppleTalk Data Stream Protocol"}, {DDP_EIGRP, "Cisco EIGRP for AppleTalk"}, {0, NULL} }; static const value_string rtmp_function_vals[] = { {1, "Request"}, {2, "Route Data Request (split horizon processed)"}, {3, "Route Data Request (no split horizon processing)"}, {0, NULL} }; #define NBP_LOOKUP 2 #define NBP_FORWARD 4 #define NBP_REPLY 3 static const value_string nbp_op_vals[] = { {NBP_LOOKUP, "lookup"}, {NBP_FORWARD, "forward request"}, {NBP_REPLY, "reply"}, {0, NULL} }; /* * XXX - do this with an FT_UINT_STRING? * Unfortunately, you can't extract from an FT_UINT_STRING the string, * which we'd want to do in order to put it into the "Data:" portion. */ int dissect_pascal_string(tvbuff_t *tvb, int offset, proto_tree *tree, int hf_index) { int len; len = tvb_get_guint8(tvb, offset); offset++; if ( tree ) { char *tmp; proto_tree *item; proto_tree *subtree; /* * XXX - if we could do this inside the protocol tree * code, we could perhaps avoid allocating and freeing * this string buffer. */ tmp = g_malloc( len+1 ); tvb_memcpy(tvb, tmp, offset, len); tmp[len] = 0; item = proto_tree_add_string(tree, hf_index, tvb, offset-1, len+1, tmp); subtree = proto_item_add_subtree(item, ett_pstring); proto_tree_add_text(subtree, tvb, offset-1, 1, "Length: %d", len); proto_tree_add_text(subtree, tvb, offset, len, "Data: %s", tmp); g_free(tmp); } offset += len; return offset; } static void dissect_rtmp_request(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *rtmp_tree; proto_item *ti; guint8 function; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTMP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); function = tvb_get_guint8(tvb, 0); if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "%s", val_to_str(function, rtmp_function_vals, "Unknown function (%02)")); if (tree) { ti = proto_tree_add_item(tree, proto_rtmp, tvb, 0, 1, FALSE); rtmp_tree = proto_item_add_subtree(ti, ett_rtmp); proto_tree_add_uint(rtmp_tree, hf_rtmp_function, tvb, 0, 1, function); } } static void dissect_rtmp_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *rtmp_tree; proto_item *ti; int offset = 0; guint16 net; guint8 nodelen,nodelen_bits; guint16 node; /* might be more than 8 bits */ int i; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTMP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); net = tvb_get_ntohs(tvb, offset); nodelen_bits = tvb_get_guint8(tvb, offset+2); if ( nodelen_bits <= 8 ) { node = tvb_get_guint8(tvb, offset)+1; nodelen = 1; } else { node = tvb_get_ntohs(tvb, offset); nodelen = 2; } if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "Net: %u Node Len: %u Node: %u", net, nodelen_bits, node); if (tree) { ti = proto_tree_add_item(tree, proto_rtmp, tvb, offset, -1, FALSE); rtmp_tree = proto_item_add_subtree(ti, ett_rtmp); proto_tree_add_uint(rtmp_tree, hf_rtmp_net, tvb, offset, 2, net); proto_tree_add_uint(rtmp_tree, hf_rtmp_node_len, tvb, offset+2, 1, nodelen_bits); proto_tree_add_uint(rtmp_tree, hf_rtmp_node, tvb, offset+3, nodelen, node); offset += 3 + nodelen; i = 1; while (tvb_offset_exists(tvb, offset)) { proto_tree *tuple_item, *tuple_tree; guint16 tuple_net; guint8 tuple_dist; guint16 tuple_range_end; tuple_net = tvb_get_ntohs(tvb, offset); tuple_dist = tvb_get_guint8(tvb, offset+2); if (tuple_dist & 0x80) { tuple_range_end = tvb_get_ntohs(tvb, offset+3); tuple_item = proto_tree_add_text(rtmp_tree, tvb, offset, 6, "Tuple %d: Range Start: %u Dist: %u Range End: %u", i, tuple_net, tuple_dist&0x7F, tuple_range_end); } else { tuple_item = proto_tree_add_text(rtmp_tree, tvb, offset, 3, "Tuple %d: Net: %u Dist: %u", i, tuple_net, tuple_dist); } tuple_tree = proto_item_add_subtree(tuple_item, ett_rtmp_tuple); if (tuple_dist & 0x80) { proto_tree_add_uint(tuple_tree, hf_rtmp_tuple_range_start, tvb, offset, 2, tuple_net); } else { proto_tree_add_uint(tuple_tree, hf_rtmp_tuple_net, tvb, offset, 2, tuple_net); } proto_tree_add_uint(tuple_tree, hf_rtmp_tuple_dist, tvb, offset+2, 1, tuple_dist & 0x7F); if (tuple_dist & 0x80) { /* * Extended network tuple. */ proto_tree_add_item(tuple_tree, hf_rtmp_tuple_range_end, tvb, offset+3, 2, FALSE); offset += 6; } else offset += 3; i++; } } } static void dissect_nbp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *nbp_tree; proto_tree *nbp_info_tree; proto_item *ti, *info_item; int offset = 0; guint8 info; guint op, count; unsigned int i; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "NBP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); info = tvb_get_guint8(tvb, offset); op = info >> 4; count = info & 0x0F; if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "Op: %s Count: %u", val_to_str(op, nbp_op_vals, "Unknown (0x%01x)"), count); if (tree) { ti = proto_tree_add_item(tree, proto_nbp, tvb, offset, -1, FALSE); nbp_tree = proto_item_add_subtree(ti, ett_nbp); info_item = proto_tree_add_uint_format(nbp_tree, hf_nbp_info, tvb, offset, 1, info, "Info: 0x%01X Operation: %s Count: %u", info, val_to_str(op, nbp_op_vals, "Unknown (0x%01X)"), count); nbp_info_tree = proto_item_add_subtree(info_item, ett_nbp_info); proto_tree_add_uint(nbp_info_tree, hf_nbp_op, tvb, offset, 1, info); proto_tree_add_uint(nbp_info_tree, hf_nbp_count, tvb, offset, 1, info); proto_tree_add_item(nbp_tree, hf_nbp_tid, tvb, offset+1, 1, FALSE); offset += 2; for (i=0; icinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "DDP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); if (tree) { ti = proto_tree_add_item(tree, proto_ddp, tvb, 0, DDP_SHORT_HEADER_SIZE, FALSE); ddp_tree = proto_item_add_subtree(ti, ett_ddp); } len = tvb_get_ntohs(tvb, 0); if (tree) proto_tree_add_uint(ddp_tree, hf_ddp_len, tvb, 0, 2, len); dport = tvb_get_guint8(tvb, 2); if (tree) proto_tree_add_uint(ddp_tree, hf_ddp_dst_socket, tvb, 2, 1, dport); sport = tvb_get_guint8(tvb, 3); if (tree) proto_tree_add_uint(ddp_tree, hf_ddp_src_socket, tvb, 3, 1, sport); type = tvb_get_guint8(tvb, 4); src.net = 0; src.node = snode; src.port = sport; dst.net = 0; dst.node = dnode; dst.port = dport; SET_ADDRESS(&pinfo->net_src, AT_ATALK, sizeof src, (guint8 *)&src); SET_ADDRESS(&pinfo->src, AT_ATALK, sizeof src, (guint8 *)&src); SET_ADDRESS(&pinfo->net_dst, AT_ATALK, sizeof dst, (guint8 *)&dst); SET_ADDRESS(&pinfo->dst, AT_ATALK, sizeof dst, (guint8 *)&dst); if (check_col(pinfo->cinfo, COL_INFO)) { col_add_str(pinfo->cinfo, COL_INFO, val_to_str(type, op_vals, "Unknown DDP protocol (%02x)")); } if (tree) proto_tree_add_uint(ddp_tree, hf_ddp_type, tvb, 4, 1, type); new_tvb = tvb_new_subset(tvb, DDP_SHORT_HEADER_SIZE, -1, -1); if (!dissector_try_port(ddp_dissector_table, type, new_tvb, pinfo, tree)) call_dissector(data_handle,new_tvb, pinfo, tree); } static void dissect_ddp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { e_ddp ddp; proto_tree *ddp_tree; proto_item *ti; static struct atalk_ddp_addr src, dst; tvbuff_t *new_tvb; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "DDP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); tvb_memcpy(tvb, (guint8 *)&ddp, 0, sizeof(e_ddp)); ddp.dnet=ntohs(ddp.dnet); ddp.snet=ntohs(ddp.snet); ddp.sum=ntohs(ddp.sum); ddp.hops_len=ntohs(ddp.hops_len); src.net = ddp.snet; src.node = ddp.snode; src.port = ddp.sport; dst.net = ddp.dnet; dst.node = ddp.dnode; dst.port = ddp.dport; SET_ADDRESS(&pinfo->net_src, AT_ATALK, sizeof src, (guint8 *)&src); SET_ADDRESS(&pinfo->src, AT_ATALK, sizeof src, (guint8 *)&src); SET_ADDRESS(&pinfo->net_dst, AT_ATALK, sizeof dst, (guint8 *)&dst); SET_ADDRESS(&pinfo->dst, AT_ATALK, sizeof dst, (guint8 *)&dst); if (check_col(pinfo->cinfo, COL_INFO)) col_add_str(pinfo->cinfo, COL_INFO, val_to_str(ddp.type, op_vals, "Unknown DDP protocol (%02x)")); if (tree) { ti = proto_tree_add_item(tree, proto_ddp, tvb, 0, DDP_HEADER_SIZE, FALSE); ddp_tree = proto_item_add_subtree(ti, ett_ddp); proto_tree_add_uint(ddp_tree, hf_ddp_hopcount, tvb, 0, 1, ddp_hops(ddp.hops_len)); proto_tree_add_uint(ddp_tree, hf_ddp_len, tvb, 0, 2, ddp_len(ddp.hops_len)); proto_tree_add_uint(ddp_tree, hf_ddp_checksum, tvb, 2, 2, ddp.sum); proto_tree_add_uint(ddp_tree, hf_ddp_dst_net, tvb, 4, 2, ddp.dnet); proto_tree_add_uint(ddp_tree, hf_ddp_src_net, tvb, 6, 2, ddp.snet); proto_tree_add_uint(ddp_tree, hf_ddp_dst_node, tvb, 8, 1, ddp.dnode); proto_tree_add_uint(ddp_tree, hf_ddp_src_node, tvb, 9, 1, ddp.snode); proto_tree_add_uint(ddp_tree, hf_ddp_dst_socket, tvb, 10, 1, ddp.dport); proto_tree_add_uint(ddp_tree, hf_ddp_src_socket, tvb, 11, 1, ddp.sport); proto_tree_add_uint(ddp_tree, hf_ddp_type, tvb, 12, 1, ddp.type); } new_tvb = tvb_new_subset(tvb, DDP_HEADER_SIZE, -1, -1); if (!dissector_try_port(ddp_dissector_table, ddp.type, new_tvb, pinfo, tree)) call_dissector(data_handle,new_tvb, pinfo, tree); } static const value_string llap_type_vals[] = { {0x01, "Short DDP"}, {0x02, "DDP" }, {0x81, "Enquiry"}, {0x82, "Acknowledgement"}, {0x84, "RTS"}, {0x85, "CTS"}, {0, NULL} }; void capture_llap(const u_char *pd, int len, packet_counts *ld) { ld->other++; } static void dissect_llap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { guint8 dnode; guint8 snode; guint8 type; proto_tree *llap_tree = NULL; proto_item *ti; tvbuff_t *new_tvb; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "LLAP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); if (tree) { ti = proto_tree_add_item(tree, proto_llap, tvb, 0, 3, FALSE); llap_tree = proto_item_add_subtree(ti, ett_llap); } dnode = tvb_get_guint8(tvb, 0); if (tree) proto_tree_add_uint(llap_tree, hf_llap_dst, tvb, 0, 1, dnode); snode = tvb_get_guint8(tvb, 1); if (tree) proto_tree_add_uint(llap_tree, hf_llap_src, tvb, 1, 1, snode); type = tvb_get_guint8(tvb, 2); if (check_col(pinfo->cinfo, COL_INFO)) { col_add_str(pinfo->cinfo, COL_INFO, val_to_str(type, llap_type_vals, "Unknown LLAP type (%02x)")); } if (tree) proto_tree_add_uint(llap_tree, hf_llap_type, tvb, 2, 1, type); new_tvb = tvb_new_subset(tvb, 3, -1, -1); if (proto_is_protocol_enabled(proto_ddp)) { pinfo->current_proto = "DDP"; switch (type) { case 0x01: dissect_ddp_short(new_tvb, pinfo, dnode, snode, tree); return; case 0x02: dissect_ddp(new_tvb, pinfo, tree); return; } } call_dissector(data_handle,new_tvb, pinfo, tree); } void proto_register_atalk(void) { static hf_register_info hf_llap[] = { { &hf_llap_dst, { "Destination Node", "llap.dst", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_llap_src, { "Source Node", "llap.src", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_llap_type, { "Type", "llap.type", FT_UINT8, BASE_HEX, VALS(llap_type_vals), 0x0, "", HFILL }}, }; static hf_register_info hf_ddp[] = { { &hf_ddp_hopcount, { "Hop count", "ddp.hopcount", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_len, { "Datagram length", "ddp.len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_checksum, { "Checksum", "ddp.checksum", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_dst_net, { "Destination Net", "ddp.dst.net", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_src_net, { "Source Net", "ddp.src.net", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_dst_node, { "Destination Node", "ddp.dst.node", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_src_node, { "Source Node", "ddp.src.node", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_dst_socket, { "Destination Socket", "ddp.dst.socket", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_src_socket, { "Source Socket", "ddp.src.socket", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ddp_type, { "Protocol type", "ddp.type", FT_UINT8, BASE_DEC, VALS(op_vals), 0x0, "", HFILL }}, }; static hf_register_info hf_nbp[] = { { &hf_nbp_op, { "Operation", "nbp.op", FT_UINT8, BASE_DEC, VALS(nbp_op_vals), 0xF0, "Operation", HFILL }}, { &hf_nbp_info, { "Info", "nbp.info", FT_UINT8, BASE_HEX, NULL, 0x0, "Info", HFILL }}, { &hf_nbp_count, { "Count", "nbp.count", FT_UINT8, BASE_DEC, NULL, 0x0F, "Count", HFILL }}, { &hf_nbp_node_net, { "Network", "nbp.net", FT_UINT16, BASE_DEC, NULL, 0x0, "Network", HFILL }}, { &hf_nbp_node_node, { "Node", "nbp.node", FT_UINT8, BASE_DEC, NULL, 0x0, "Node", HFILL }}, { &hf_nbp_node_port, { "Port", "nbp.port", FT_UINT8, BASE_DEC, NULL, 0x0, "Port", HFILL }}, { &hf_nbp_node_enum, { "Enumerator", "nbp.enum", FT_UINT8, BASE_DEC, NULL, 0x0, "Enumerator", HFILL }}, { &hf_nbp_node_object, { "Object", "nbp.object", FT_STRING, BASE_DEC, NULL, 0x0, "Object", HFILL }}, { &hf_nbp_node_type, { "Type", "nbp.type", FT_STRING, BASE_DEC, NULL, 0x0, "Type", HFILL }}, { &hf_nbp_node_zone, { "Zone", "nbp.zone", FT_STRING, BASE_DEC, NULL, 0x0, "Zone", HFILL }}, { &hf_nbp_tid, { "Transaction ID", "nbp.tid", FT_UINT8, BASE_DEC, NULL, 0x0, "Transaction ID", HFILL }} }; static hf_register_info hf_rtmp[] = { { &hf_rtmp_net, { "Net", "rtmp.net", FT_UINT16, BASE_DEC, NULL, 0x0, "Net", HFILL }}, { &hf_rtmp_node, { "Node", "nbp.nodeid", FT_UINT8, BASE_DEC, NULL, 0x0, "Node", HFILL }}, { &hf_rtmp_node_len, { "Node Length", "nbp.nodeid.length", FT_UINT8, BASE_DEC, NULL, 0x0, "Node Length", HFILL }}, { &hf_rtmp_tuple_net, { "Net", "rtmp.tuple.net", FT_UINT16, BASE_DEC, NULL, 0x0, "Net", HFILL }}, { &hf_rtmp_tuple_range_start, { "Range Start", "rtmp.tuple.range_start", FT_UINT16, BASE_DEC, NULL, 0x0, "Range Start", HFILL }}, { &hf_rtmp_tuple_range_end, { "Range End", "rtmp.tuple.range_end", FT_UINT16, BASE_DEC, NULL, 0x0, "Range End", HFILL }}, { &hf_rtmp_tuple_dist, { "Distance", "rtmp.tuple.dist", FT_UINT16, BASE_DEC, NULL, 0x0, "Distance", HFILL }}, { &hf_rtmp_function, { "Function", "rtmp.function", FT_UINT8, BASE_DEC, VALS(rtmp_function_vals), 0x0, "Request Function", HFILL }} }; static gint *ett[] = { &ett_llap, &ett_ddp, &ett_nbp, &ett_nbp_info, &ett_nbp_node, &ett_pstring, &ett_rtmp, &ett_rtmp_tuple }; proto_llap = proto_register_protocol("LocalTalk Link Access Protocol", "LLAP", "llap"); proto_register_field_array(proto_llap, hf_llap, array_length(hf_llap)); proto_ddp = proto_register_protocol("Datagram Delivery Protocol", "DDP", "ddp"); proto_register_field_array(proto_ddp, hf_ddp, array_length(hf_ddp)); proto_nbp = proto_register_protocol("Name Binding Protocol", "NBP", "nbp"); proto_register_field_array(proto_nbp, hf_nbp, array_length(hf_nbp)); proto_rtmp = proto_register_protocol("Routing Table Maintenance Protocol", "RTMP", "rtmp"); proto_register_field_array(proto_rtmp, hf_rtmp, array_length(hf_rtmp)); proto_register_subtree_array(ett, array_length(ett)); /* subdissector code */ ddp_dissector_table = register_dissector_table("ddp.type", "DDP packet type", FT_UINT8, BASE_HEX); } void proto_reg_handoff_atalk(void) { dissector_handle_t ddp_handle, nbp_handle, rtmp_request_handle; dissector_handle_t rtmp_data_handle, llap_handle; ddp_handle = create_dissector_handle(dissect_ddp, proto_ddp); dissector_add("ethertype", ETHERTYPE_ATALK, ddp_handle); dissector_add("chdlctype", ETHERTYPE_ATALK, ddp_handle); dissector_add("ppp.protocol", PPP_AT, ddp_handle); dissector_add("null.type", BSD_AF_APPLETALK, ddp_handle); nbp_handle = create_dissector_handle(dissect_nbp, proto_nbp); dissector_add("ddp.type", DDP_NBP, nbp_handle); rtmp_request_handle = create_dissector_handle(dissect_rtmp_request, proto_rtmp); rtmp_data_handle = create_dissector_handle(dissect_rtmp_data, proto_rtmp); dissector_add("ddp.type", DDP_RTMPREQ, rtmp_request_handle); dissector_add("ddp.type", DDP_RTMPDATA, rtmp_data_handle); llap_handle = create_dissector_handle(dissect_llap, proto_llap); dissector_add("wtap_encap", WTAP_ENCAP_LOCALTALK, llap_handle); data_handle = find_dissector("data"); }