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wireshark/epan/dissectors/packet-mint.c

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/* packet-mint.c
* Routines for the disassembly of the Media Independent Network Transport
* protocol used between wireless controllers and APs
*
* Copyright 2013 Joerg Mayer (see AUTHORS file)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* Extremenetworks/Zebra/Motorola/Symbol WLAN proprietary protocol
* http://www.awimobility.com/s.nl/ctype.KB/it.I/id.7761/KB.81/.f
* and
* http://www.michaelfmcnamara.com/files/motorola/WiNG_5X_How_To_NOC.pdf
* looks like a mixture of lwapp/capwap and is-is/ospf
*
* MLCP: MINT Link Creation Protocol
*/
/* We don't want the tranported data to pollute the output until
* we know how to correctly determine the packet type and length
*/
#define MINT_DEVELOPMENT 1
#define NEW_PROTO_TREE_API 1
#include "config.h"
#include <epan/packet.h>
#include <epan/exceptions.h>
#include <epan/etypes.h>
#include <epan/show_exception.h>
void proto_register_mint(void);
void proto_reg_handoff_mint(void);
#define PROTO_SHORT_NAME "MINT"
#define PROTO_LONG_NAME "Media Independent Network Transport"
/* 0x8783 ETHERTYPE_MINT */
/* Destmac: 01-a0-f8-00-00-00: Hello packets in multicast mode */
/* Mint overhead: 86 bytes */
/* 24576 = 0x6000 */
#define PORT_MINT_CONTROL_TUNNEL 24576
/* 24577 = 0x6001 */
#define PORT_MINT_DATA_TUNNEL 24577
#define PORT_MINT_RANGE "24576-24577"
/* MLCP: VLAN or IP-based */
static dissector_handle_t eth_handle;
/* ett handles */
static int ett_mint_ethshim = -1;
static int ett_mint = -1;
static int ett_mint_header = -1;
static int ett_mint_ctrl = -1;
static int ett_mint_data = -1;
static dissector_handle_t mint_control_handle;
static dissector_handle_t mint_data_handle;
static dissector_handle_t mint_eth_handle;
/* Output of "service show mint ports" on controller */
typedef enum {
MINT_PORT_0 = 0,
MINT_PORT_DATA = 1,
MINT_PORT_DATA_FLOOD = 2,
MINT_PORT_FDB_UPDATE = 3,
MINT_PORT_MDD = 8,
MINT_PORT_RIM = 9,
MINT_PORT_SMARTRF = 10,
MINT_PORT_CONFIG = 11,
MINT_PORT_ROUTER = 12,
MINT_PORT_REDUNDANCY = 13,
MINT_PORT_HOTSPOT = 14,
MINT_PORT_PING = 15,
MINT_PORT_STATS = 16,
MINT_PORT_JOIN = 18,
MINT_PORT_FILEXFR = 19,
MINT_PORT_SECURITY = 20,
MINT_PORT_BOOTSTRAP = 21,
MINT_PORT_XPATH = 22,
MINT_PORT_MCAST_RP = 23,
MINT_PORT_MCAST_CTRL = 24,
MINT_PORT_MCAST_DATA = 25,
MINT_PORT_RADPROXY = 26,
MINT_PORT_CLUSTER = 27,
MINT_PORT_MIGRATION = 28,
MINT_PORT_CLUSTER_SYNC = 29,
MINT_PORT_NEIGHBOR = 30,
MINT_PORT_GKEY = 31,
MINT_PORT_MARP = 32,
MINT_PORT_MPROXY = 33,
MINT_PORT_MLCP = 34,
MINT_PORT_TELNET = 35,
MINT_PORT_RDBG_REQ = 36,
MINT_PORT_RDBG_SRV0 = 37,
MINT_PORT_RDBG_SRV1 = 38,
MINT_PORT_RDBG_SRV2 = 39,
MINT_PORT_RDBG_SRV3 = 40,
MINT_PORT_RDBG_SRV4 = 41,
MINT_PORT_RDBG_SRV5 = 42,
MINT_PORT_RDBG_SRV6 = 43,
MINT_PORT_RDBG_SRV7 = 44,
MINT_PORT_TRACEROUTE = 45,
MINT_PORT_STATS_LISTEN = 46,
MINT_PORT_NOC_CONTROLLER = 47,
MINT_PORT_NOC_CLIENT = 48,
MINT_PORT_STATS_SERVER = 49,
MINT_PORT_EXTVLAN = 50,
MINT_PORT_RAD_DYNAMIC = 51,
MINT_PORT_RFD_CLIENT = 52,
MINT_PORT_RFD_SERVER = 53,
MINT_PORT_NOC_SERVER = 54,
MINT_PORT_NOC__CLIENT = 55,
MINT_PORT_CP_STATS_CLIENT = 56,
MINT_PORT_NX_URLINFO_SRVR = 57,
MINT_PORT_NX_URLINFO_PRXY = 58,
MINT_PORT_LDAP_PROXY = 59,
MINT_PORT_ANALYTICS = 60,
MINT_PORT_ADOPTION = 61,
MINT_PORT_CLUSTER_ADOPT = 62,
MINT_PORT_NOC_SITE = 63,
MINT_PORT_DAD = 64,
MINT_PORT_CCACHE = 65,
MINT_PORT_GLB_ASSOC_LIST = 66,
MINT_PORT_BONJOUR = 131,
MINT_PORT_DPD2_EXTIF = 132,
MINT_PORT_TROUBLE = 133,
MINT_PORT_URLF_CLASSIFIER = 134,
MINT_PORT_NF_PROXY = 135,
MINT_PORT_WING_EXPRESS = 136,
MINT_PORT_NSM_STAT_CLIENT = 138,
MINT_PORT_DPD2_STATS_CLIENT = 140,
MINT_PORT_BTIM_STATS_CLIENT = 142
} mint_packettype_t;
static const value_string mint_port_vals[] = {
{ MINT_PORT_0, "0 port" },
{ MINT_PORT_DATA, "data/dgram" },
{ MINT_PORT_DATA_FLOOD, "data-flood/dgram" },
{ MINT_PORT_FDB_UPDATE, "fdb-update/dgram" },
{ MINT_PORT_MDD, "mdd/dgram" },
{ MINT_PORT_RIM, "rim/dgram" },
{ MINT_PORT_SMARTRF, "smartrf/seqpkt" },
{ MINT_PORT_CONFIG, "config/stream" },
{ MINT_PORT_ROUTER, "router/dgram" },
{ MINT_PORT_REDUNDANCY, "redundancy/seqpkt" },
{ MINT_PORT_HOTSPOT, "hotspot/seqpkt" },
{ MINT_PORT_PING, "ping/dgram" },
{ MINT_PORT_STATS, "stats/dgram" },
{ MINT_PORT_JOIN, "join/seqpkt" },
{ MINT_PORT_FILEXFR, "filexfr/stream" },
{ MINT_PORT_SECURITY, "security/seqpkt" },
{ MINT_PORT_BOOTSTRAP, "bootstrap/seqpkt" },
{ MINT_PORT_XPATH, "xpath/stream" },
{ MINT_PORT_MCAST_RP, "mcast-rp/dgram" },
{ MINT_PORT_MCAST_CTRL, "mcast-ctrl/seqpkt" },
{ MINT_PORT_MCAST_DATA, "mcast-data/seqpkt" },
{ MINT_PORT_RADPROXY, "radproxy/dgram" },
{ MINT_PORT_CLUSTER, "cluster/seqpkt" },
{ MINT_PORT_MIGRATION, "migration/stream" },
{ MINT_PORT_CLUSTER_SYNC, "cluster-sync/stream" },
{ MINT_PORT_NEIGHBOR, "neighbor/seqpkt" },
{ MINT_PORT_GKEY, "gkey/dgram" },
{ MINT_PORT_MARP, "marp/dgram" },
{ MINT_PORT_MPROXY, "mproxy/seqpkt" },
{ MINT_PORT_MLCP, "mlcp/dgram" },
{ MINT_PORT_TELNET, "telnet/stream" },
{ MINT_PORT_RDBG_REQ, "rdbg-req/seqpkt" },
{ MINT_PORT_RDBG_SRV0, "rdbg-srv0/seqpkt" },
{ MINT_PORT_RDBG_SRV1, "rdbg-srv1/seqpkt" },
{ MINT_PORT_RDBG_SRV2, "rdbg-srv2/seqpkt" },
{ MINT_PORT_RDBG_SRV3, "rdbg-srv3/seqpkt" },
{ MINT_PORT_RDBG_SRV4, "rdbg-srv4/seqpkt" },
{ MINT_PORT_RDBG_SRV5, "rdbg-srv5/seqpkt" },
{ MINT_PORT_RDBG_SRV6, "rdbg-srv6/seqpkt" },
{ MINT_PORT_RDBG_SRV7, "rdbg-srv7/seqpkt" },
{ MINT_PORT_TRACEROUTE, "traceroute/seqpkt" },
{ MINT_PORT_STATS_LISTEN, "stats-listen/seqpkt" },
{ MINT_PORT_NOC_CONTROLLER, "noc-controller/seqpkt" },
{ MINT_PORT_NOC_CLIENT, "noc-client/seqpkt" },
{ MINT_PORT_STATS_SERVER, "stats-server/seqpkt" },
{ MINT_PORT_EXTVLAN, "extvlan/dgram" },
{ MINT_PORT_RAD_DYNAMIC, "rad-dynamic/seqpkt" },
{ MINT_PORT_RFD_CLIENT, "rfd_client/stream" },
{ MINT_PORT_RFD_SERVER, "rfd_server/stream" },
{ MINT_PORT_NOC_SERVER, "noc_server/stream" },
{ MINT_PORT_NOC__CLIENT, "noc_client/stream" },
{ MINT_PORT_CP_STATS_CLIENT, "cp_stats_client/stream" },
{ MINT_PORT_NX_URLINFO_SRVR, "nx_urlinfo_srvr/dgram" },
{ MINT_PORT_NX_URLINFO_PRXY, "nx_urlinfo_prxy/dgram" },
{ MINT_PORT_LDAP_PROXY, "ldap_proxy/stream" },
{ MINT_PORT_ANALYTICS, "analytics/dgram" },
{ MINT_PORT_ADOPTION, "adoption/seqpkt" },
{ MINT_PORT_CLUSTER_ADOPT, "cluster-adopt/seqpkt" },
{ MINT_PORT_NOC_SITE, "noc-site/stream" },
{ MINT_PORT_DAD, "dad/stream" },
{ MINT_PORT_CCACHE, "ccache/dgram" },
{ MINT_PORT_GLB_ASSOC_LIST, "glb_assoc_list/dgram" },
{ MINT_PORT_BONJOUR, "bonjour/dgram" },
{ MINT_PORT_DPD2_EXTIF, "dpd2-extif/dgram" },
{ MINT_PORT_TROUBLE, "trouble/dgram" },
{ MINT_PORT_URLF_CLASSIFIER, "urlf_classifier/dgram" },
{ MINT_PORT_NF_PROXY, "nf-proxy/dgram" },
{ MINT_PORT_WING_EXPRESS, "wing_express/dgram" },
{ MINT_PORT_NSM_STAT_CLIENT, "nsm-stat-client/stream" },
{ MINT_PORT_DPD2_STATS_CLIENT, "dpd2-stats-client/stream" },
{ MINT_PORT_BTIM_STATS_CLIENT, "btim-stats-client/stream" },
{ 0, NULL }
};
static const value_string mint_router_csnp_tlv_vals[] = {
{ 0, NULL }
};
static const value_string mint_router_helo_tlv_vals[] = {
{ 1, "MINT ID" },
{ 8, "IPv4 address" },
{ 0, NULL }
};
static const value_string mint_router_lsp_tlv_vals[] = {
{ 8, "MINT ID" },
{ 0, NULL }
};
static const value_string mint_router_psnp_tlv_vals[] = {
{ 0, NULL }
};
static const value_string mint_0x22_tlv_vals[] = {
{ 0, NULL }
};
/* hfi elements */
#define MINT_HF_INIT HFI_INIT(proto_mint)
static header_field_info *hfi_mint = NULL;
/* MINT Eth Shim */
static header_field_info hfi_mint_ethshim MINT_HF_INIT =
{ "MINT Ethernet Shim", "mint.ethshim", FT_PROTOCOL, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_ethshim_unknown MINT_HF_INIT =
{ "Unknown", "mint.ethshim.unknown", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_ethshim_length MINT_HF_INIT =
{ "Length", "mint.ethshim.length", FT_UINT16, BASE_DEC, NULL,
0x0, NULL, HFILL };
/* MINT common */
static header_field_info hfi_mint_header MINT_HF_INIT =
{ "Header", "mint.header", FT_PROTOCOL, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_unknown1 MINT_HF_INIT =
{ "HdrUnk1", "mint.header.unknown1", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_ttl MINT_HF_INIT =
{ "TTL", "mint.header.ttl", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_unknown2 MINT_HF_INIT =
{ "HdrUnk2", "mint.header.unknown2", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_srcid MINT_HF_INIT =
{ "Src MINT ID", "mint.header.srcid", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_dstid MINT_HF_INIT =
{ "Dst MINT ID", "mint.header.dstid", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_srcdataport MINT_HF_INIT =
{ "Src port", "mint.header.srcport", FT_UINT16, BASE_DEC, VALS(mint_port_vals),
0x0, NULL, HFILL };
static header_field_info hfi_mint_header_dstdataport MINT_HF_INIT =
{ "Dst port", "mint.header.dstport", FT_UINT16, BASE_DEC, VALS(mint_port_vals),
0x0, NULL, HFILL };
/* MINT Data */
static header_field_info hfi_mint_data MINT_HF_INIT =
{ "Data Frame", "mint.data", FT_PROTOCOL, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_data_vlan MINT_HF_INIT =
{ "Data VLAN", "mint.data.vlan", FT_UINT16, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_data_seqno MINT_HF_INIT =
{ "Sequence Number", "mint.data.seqno", FT_UINT32, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_data_unknown1 MINT_HF_INIT =
{ "DataUnk1", "mint.data.unknown1", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
/* MINT Control common */
static header_field_info hfi_mint_control MINT_HF_INIT =
{ "Control Frame", "mint.control", FT_PROTOCOL, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_control_32zerobytes MINT_HF_INIT =
{ "Zero Bytes", "mint.control.32zerobytes", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_control_unknown1 MINT_HF_INIT =
{ "CtrlUnk1", "mint.control.unknown1", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
/* Router */
static header_field_info hfi_mint_router_unknown1 MINT_HF_INIT =
{ "Unknown1", "mint.control.router.unknown1", FT_UINT8, BASE_HEX, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_unknown2 MINT_HF_INIT =
{ "Unknown2", "mint.control.router.unknown2", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_unknown3 MINT_HF_INIT =
{ "Unknown3", "mint.control.router.unknown3", FT_UINT8, BASE_HEX, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_header_length MINT_HF_INIT =
{ "Headerlength", "mint.control.router.header.length", FT_UINT8, BASE_HEX, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_message_type MINT_HF_INIT =
{ "Message type", "mint.control.router.message.type", FT_STRING, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_header_sender MINT_HF_INIT =
{ "Sender ID", "mint.control.router.header.sender", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_header_unknown MINT_HF_INIT =
{ "Header unknown", "mint.control.router.header.unknown", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_type_unknown MINT_HF_INIT =
{ "TLV Type", "mint.control.router.tlvtype", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_type_csnp MINT_HF_INIT =
{ "TLV Type", "mint.control.router.tlvtype", FT_UINT8, BASE_DEC, VALS(mint_router_csnp_tlv_vals),
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_type_helo MINT_HF_INIT =
{ "TLV Type", "mint.control.router.tlvtype", FT_UINT8, BASE_DEC, VALS(mint_router_helo_tlv_vals),
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_type_lsp MINT_HF_INIT =
{ "TLV Type", "mint.control.router.tlvtype", FT_UINT8, BASE_DEC, VALS(mint_router_lsp_tlv_vals),
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_type_psnp MINT_HF_INIT =
{ "TLV Type", "mint.control.router.tlvtype", FT_UINT8, BASE_DEC, VALS(mint_router_psnp_tlv_vals),
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_length MINT_HF_INIT =
{ "TLV Length", "mint.control.router.tlvlength", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_array MINT_HF_INIT =
{ "Array indicator", "mint.control.router.array", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_element MINT_HF_INIT =
{ "Array element", "mint.control.router.element", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_router_value MINT_HF_INIT =
{ "TLV Value", "mint.control.router.tlvvalue", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
/* Neighbor */
static header_field_info hfi_mint_neighbor_unknown MINT_HF_INIT =
{ "Unknown", "mint.control.neighbor.unknown", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
/* MLCP */
static header_field_info hfi_mint_mlcp_message MINT_HF_INIT =
{ "Message", "mint.control.mlcp.message", FT_UINT16, BASE_HEX, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_mlcp_type MINT_HF_INIT =
{ "TLV Type", "mint.control.mlcp.tlvtype", FT_UINT8, BASE_DEC, VALS(mint_0x22_tlv_vals),
0x0, NULL, HFILL };
static header_field_info hfi_mint_mlcp_length MINT_HF_INIT =
{ "TLV Length", "mint.control.mlcp.tlvlength", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL };
static header_field_info hfi_mint_mlcp_value MINT_HF_INIT =
{ "TLV Value", "mint.control.mlcp.tlvvalue", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL };
/* End hfi elements */
static int
dissect_eth_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *mint_tree,
volatile guint32 offset, guint32 length)
{
tvbuff_t *eth_tvb;
#ifdef MINT_DEVELOPMENT
col_set_writable(pinfo->cinfo, -1, FALSE);
#endif
eth_tvb = tvb_new_subset_length(tvb, offset, length);
/* Continue after Ethernet dissection errors */
TRY {
call_dissector(eth_handle, eth_tvb, pinfo, mint_tree);
} CATCH_NONFATAL_ERRORS {
show_exception(eth_tvb, pinfo, mint_tree, EXCEPT_CODE, GET_MESSAGE);
} ENDTRY;
offset += length;
#ifdef MINT_DEVELOPMENT
col_set_writable(pinfo->cinfo, -1, TRUE);
#endif
return offset;
}
static int
dissect_mint_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
guint32 offset, guint32 packet_length, guint received_via)
{
proto_item *ti;
proto_tree *mint_tree = NULL;
proto_tree *mint_header_tree = NULL;
proto_tree *mint_data_tree = NULL;
proto_tree *mint_ctrl_tree = NULL;
guint16 bytes_remaining;
guint16 mint_port;
guint8 type, length, header_length;
guint32 message_type;
guint8 element_length;
static header_field_info *display_hfi_tlv_vals;
mint_port = tvb_get_ntohs(tvb, offset + 12);
col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_SHORT_NAME);
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(mint_port,
mint_port_vals, "Type %03d"));
ti = proto_tree_add_item(tree, hfi_mint, tvb,
offset, packet_length, ENC_NA);
mint_tree = proto_item_add_subtree(ti, ett_mint);
ti = proto_tree_add_item(mint_tree, &hfi_mint_header, tvb,
offset, 16, ENC_NA);
mint_header_tree = proto_item_add_subtree(ti, ett_mint_header);
/* MINT header */
proto_tree_add_item(mint_header_tree, &hfi_mint_header_unknown1, tvb,
offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item(mint_header_tree, &hfi_mint_header_ttl, tvb,
offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item(mint_header_tree, &hfi_mint_header_unknown2, tvb,
offset, 2, ENC_NA);
offset += 2;
proto_tree_add_item(mint_header_tree, &hfi_mint_header_dstid, tvb,
offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(mint_header_tree, &hfi_mint_header_srcid, tvb,
offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(mint_header_tree, &hfi_mint_header_dstdataport, tvb,
offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(mint_header_tree, &hfi_mint_header_srcdataport, tvb,
offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* FIXME: This is probably not the right way to determine the packet type.
* It's more likely something in mint_header_unknown1 but I haven't
* found out what. */
switch(mint_port) {
case MINT_PORT_DATA:
ti = proto_tree_add_item(mint_tree, &hfi_mint_data, tvb,
offset, packet_length - 16, ENC_NA);
mint_data_tree = proto_item_add_subtree(ti, ett_mint_data);
proto_tree_add_item(mint_data_tree, &hfi_mint_data_unknown1, tvb,
offset, 2, ENC_NA);
offset += 2;
/* Transported user frame */
if (offset < packet_length)
offset += dissect_eth_frame(tvb, pinfo, tree,
offset, packet_length - offset);
break;
case MINT_PORT_DATA_FLOOD:
ti = proto_tree_add_item(mint_tree, &hfi_mint_data, tvb,
offset, packet_length - 16, ENC_NA);
mint_data_tree = proto_item_add_subtree(ti, ett_mint_data);
/* Decode as vlan only for now. To be verified against a capture
* with CoS != 0 */
proto_tree_add_item(mint_data_tree, &hfi_mint_data_vlan, tvb,
offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(mint_data_tree, &hfi_mint_data_seqno, tvb,
offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(mint_data_tree, &hfi_mint_data_unknown1, tvb,
offset, 4, ENC_NA);
offset += 4;
/* Transported user frame */
if (offset < packet_length)
offset += dissect_eth_frame(tvb, pinfo, tree,
offset, packet_length - offset);
break;
case MINT_PORT_ROUTER:
ti = proto_tree_add_item(mint_tree, &hfi_mint_control, tvb,
offset, packet_length - 16, ENC_NA);
mint_ctrl_tree = proto_item_add_subtree(ti, ett_mint_ctrl);
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_control_32zerobytes, tvb,
offset, 32, ENC_NA);
offset += 32;
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_unknown1, tvb,
offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_unknown2, tvb,
offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_unknown3, tvb,
offset, 1, ENC_NA);
offset += 1;
header_length = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_header_length, tvb,
offset, 1, ENC_NA);
offset += 1;
message_type = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_message_type, tvb,
offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_header_sender, tvb,
offset, 4, ENC_NA);
offset += 4;
switch (message_type) {
case 0x43534E50: /* CSNP */
element_length = 12;
display_hfi_tlv_vals = &hfi_mint_router_type_csnp;
break;
case 0x48454C4F: /* HELO */
element_length = 0;
display_hfi_tlv_vals = &hfi_mint_router_type_helo;
break;
case 0x4C535000: /* LSP */
element_length = 8;
display_hfi_tlv_vals = &hfi_mint_router_type_lsp;
break;
case 0x50534E50: /* PSNP */
element_length = 4;
display_hfi_tlv_vals = &hfi_mint_router_type_psnp;
break;
default:
element_length = 0;
display_hfi_tlv_vals = &hfi_mint_router_type_unknown;
}
/* FIXME: This should go into the per message_type switch above */
if (header_length > 12) {
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_header_unknown, tvb,
offset, header_length - 12, ENC_NA);
offset += header_length - 12;
}
while (offset < packet_length - 2) {
type = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mint_ctrl_tree, display_hfi_tlv_vals, tvb,
offset, 1, ENC_NA);
offset += 1;
length = tvb_get_guint8(tvb, offset);
/* FIXME: This is a hack - reliable array detection missing */
if (type == 1 && length == 128) {
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_array, tvb,
offset, 1, ENC_NA);
offset += 1;
length = tvb_get_guint8(tvb, offset);
}
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_length, tvb,
offset, 1, ENC_NA);
offset += 1;
if (offset + length > packet_length) {
/* FIXME: print expert information */
break;
}
if (type == 1 && element_length) {
guint32 end_offset = offset + length;
for (; offset < end_offset; offset += element_length) {
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_element, tvb,
offset, element_length, ENC_NA);
}
} else {
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_router_value, tvb,
offset, length, ENC_NA);
offset += length;
}
}
break;
case MINT_PORT_NEIGHBOR:
ti = proto_tree_add_item(mint_tree, &hfi_mint_control, tvb,
offset, packet_length - 16, ENC_NA);
mint_ctrl_tree = proto_item_add_subtree(ti, ett_mint_ctrl);
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_control_32zerobytes, tvb,
offset, 32, ENC_NA);
offset += 32;
bytes_remaining = packet_length - offset;
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_neighbor_unknown, tvb,
offset, bytes_remaining, ENC_NA);
offset += bytes_remaining;
break;
case MINT_PORT_MLCP:
ti = proto_tree_add_item(mint_tree, &hfi_mint_control, tvb,
offset, packet_length - 16, ENC_NA);
mint_ctrl_tree = proto_item_add_subtree(ti, ett_mint_ctrl);
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_control_32zerobytes, tvb,
offset, 32, ENC_NA);
offset += 32;
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_mlcp_message, tvb,
offset, 2, ENC_BIG_ENDIAN);
offset += 2;
while (offset < packet_length - 2) {
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_mlcp_type, tvb,
offset, 1, ENC_NA);
offset += 1;
length = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_mlcp_length, tvb,
offset, 1, ENC_NA);
offset += 1;
if (offset + length > packet_length) {
/* print expert information */
break;
}
proto_tree_add_item(mint_ctrl_tree, &hfi_mint_mlcp_value, tvb,
offset, length, ENC_NA);
offset += length;
}
break;
default:
bytes_remaining = packet_length - offset;
switch(received_via) {
case PORT_MINT_CONTROL_TUNNEL:
case ETHERTYPE_MINT:
proto_tree_add_item(mint_tree, &hfi_mint_control_unknown1, tvb,
offset, bytes_remaining, ENC_NA);
break;
case PORT_MINT_DATA_TUNNEL:
proto_tree_add_item(mint_tree, &hfi_mint_data_unknown1, tvb,
offset, bytes_remaining, ENC_NA);
break;
default:
DISSECTOR_ASSERT_NOT_REACHED();
}
offset += bytes_remaining;
break;
}
#if defined MINT_DEVELOPMENT
tree_expanded_set(ett_mint, TRUE);
tree_expanded_set(ett_mint_ethshim, TRUE);
tree_expanded_set(ett_mint_header, TRUE);
tree_expanded_set(ett_mint_ctrl, TRUE);
tree_expanded_set(ett_mint_data, TRUE);
#endif
return offset;
}
static int
dissect_mint_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint32 packet_length = tvb_captured_length(tvb);
return dissect_mint_common(tvb, pinfo, tree, 0, packet_length,
PORT_MINT_CONTROL_TUNNEL);
}
static int
dissect_mint_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint32 packet_length = tvb_captured_length(tvb);
return dissect_mint_common(tvb, pinfo, tree, 0, packet_length,
PORT_MINT_DATA_TUNNEL);
}
static int
dissect_mint_ethshim(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ti;
proto_tree *mint_ethshim_tree = NULL;
guint32 offset = 0;
guint32 packet_length;
ti = proto_tree_add_item(tree, &hfi_mint_ethshim, tvb,
offset, 4, ENC_NA);
mint_ethshim_tree = proto_item_add_subtree(ti, ett_mint_ethshim);
proto_tree_add_item(mint_ethshim_tree, &hfi_mint_ethshim_unknown, tvb,
offset, 2, ENC_NA);
offset += 2;
proto_tree_add_item(mint_ethshim_tree, &hfi_mint_ethshim_length, tvb,
offset, 2, ENC_BIG_ENDIAN);
packet_length = tvb_get_ntohs(tvb, offset) + 4;
offset += 2;
offset += dissect_mint_common(tvb, pinfo, tree, 4, packet_length, ETHERTYPE_MINT);
return offset;
}
static gboolean
test_mint_control(tvbuff_t *tvb _U_)
{
#if 0
/* Minimum of 8 bytes, first byte (version) has value of 3 */
if ( tvb_length(tvb) < 8
|| tvb_get_guint8(tvb, 0) != 3
/* || tvb_get_guint8(tvb, 2) != 0
|| tvb_get_ntohs(tvb, 6) > tvb_reported_length(tvb) */
) {
return FALSE;
}
#endif
return TRUE;
}
static gboolean
test_mint_data(tvbuff_t *tvb _U_)
{
#if 0
/* Minimum of 8 bytes, first byte (version) has value of 3 */
if ( tvb_length(tvb) < 8
|| tvb_get_guint8(tvb, 0) != 3
/* || tvb_get_guint8(tvb, 2) != 0
|| tvb_get_ntohs(tvb, 6) > tvb_reported_length(tvb) */
) {
return FALSE;
}
#endif
return TRUE;
}
static gboolean
test_mint_eth(tvbuff_t *tvb _U_)
{
#if 0
/* Minimum of 8 bytes, first byte (version) has value of 3 */
if ( tvb_length(tvb) < 8
|| tvb_get_guint8(tvb, 0) != 3
/* || tvb_get_guint8(tvb, 2) != 0
|| tvb_get_ntohs(tvb, 6) > tvb_reported_length(tvb) */
) {
return FALSE;
}
#endif
return TRUE;
}
static int
dissect_mint_control_static(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if ( !test_mint_control(tvb) ) {
return 0;
}
return dissect_mint_control(tvb, pinfo, tree);
}
static int
dissect_mint_data_static(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if ( !test_mint_data(tvb) ) {
return 0;
}
return dissect_mint_data(tvb, pinfo, tree);
}
static int
dissect_mint_ethshim_static(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if ( !test_mint_eth(tvb) ) {
return 0;
}
return dissect_mint_ethshim(tvb, pinfo, tree);
}
void
proto_register_mint(void)
{
#ifndef HAVE_HFI_SECTION_INIT
static header_field_info *hfi[] = {
/* MINT Eth Shim */
&hfi_mint_ethshim,
&hfi_mint_ethshim_unknown,
&hfi_mint_ethshim_length,
/* MINT common */
&hfi_mint_header,
&hfi_mint_header_unknown1,
&hfi_mint_header_ttl,
&hfi_mint_header_unknown2,
&hfi_mint_header_srcid,
&hfi_mint_header_dstid,
&hfi_mint_header_srcdataport,
&hfi_mint_header_dstdataport,
/* MINT Data */
&hfi_mint_data,
&hfi_mint_data_vlan,
&hfi_mint_data_seqno,
&hfi_mint_data_unknown1,
/* MINT Control */
&hfi_mint_control,
&hfi_mint_control_32zerobytes,
&hfi_mint_control_unknown1,
/* Router */
&hfi_mint_router_message_type,
&hfi_mint_router_header_sender,
&hfi_mint_router_unknown1,
&hfi_mint_router_unknown2,
&hfi_mint_router_unknown3,
&hfi_mint_router_header_length,
&hfi_mint_router_header_unknown,
&hfi_mint_router_type_unknown,
&hfi_mint_router_type_csnp,
&hfi_mint_router_type_helo,
&hfi_mint_router_type_lsp,
&hfi_mint_router_type_psnp,
&hfi_mint_router_length,
&hfi_mint_router_array,
&hfi_mint_router_element,
&hfi_mint_router_value,
/* Neighbor */
&hfi_mint_neighbor_unknown,
/* MLCP */
&hfi_mint_mlcp_message,
&hfi_mint_mlcp_type,
&hfi_mint_mlcp_length,
&hfi_mint_mlcp_value,
};
#endif
static gint *ett[] = {
&ett_mint_ethshim,
&ett_mint,
&ett_mint_header,
&ett_mint_ctrl,
&ett_mint_data,
};
int proto_mint, proto_mint_data;
proto_mint = proto_register_protocol(PROTO_LONG_NAME, PROTO_SHORT_NAME, "mint");
/* Created to remove Decode As confusion */
proto_mint_data = proto_register_protocol_in_name_only("Media Independent Network Transport Data", "MINT (Data)", "mint_data", proto_mint, FT_PROTOCOL);
hfi_mint = proto_registrar_get_nth(proto_mint);
proto_register_fields(proto_mint, hfi, array_length(hfi));
proto_register_subtree_array(ett, array_length(ett));
mint_control_handle = create_dissector_handle(dissect_mint_control_static, proto_mint);
mint_data_handle = create_dissector_handle(dissect_mint_data_static, proto_mint_data);
mint_eth_handle = create_dissector_handle(dissect_mint_ethshim_static, proto_mint);
}
void
proto_reg_handoff_mint(void)
{
dissector_add_uint_range_with_preference("udp.port", PORT_MINT_RANGE, mint_control_handle);
dissector_add_uint("ethertype", ETHERTYPE_MINT, mint_eth_handle);
eth_handle = find_dissector_add_dependency("eth_withoutfcs", hfi_mint->id);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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