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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
commit | e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch) | |
tree | 68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-nlsp.c | |
parent | Initial commit. (diff) | |
download | wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip |
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-nlsp.c')
-rw-r--r-- | epan/dissectors/packet-nlsp.c | 1765 |
1 files changed, 1765 insertions, 0 deletions
diff --git a/epan/dissectors/packet-nlsp.c b/epan/dissectors/packet-nlsp.c new file mode 100644 index 00000000..f331beea --- /dev/null +++ b/epan/dissectors/packet-nlsp.c @@ -0,0 +1,1765 @@ +/* packet-nlsp.c + * Routines for NetWare Link Services Protocol + * + * Based on ISIS dissector by Stuart Stanley <stuarts@mxmail.net> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/expert.h> +#include <epan/to_str.h> +#include "packet-ipx.h" + +void proto_register_nlsp(void); +void proto_reg_handoff_nlsp(void); + +static dissector_handle_t nlsp_handle; + +/* NLSP base header */ +static int proto_nlsp = -1; + +static int hf_nlsp_irpd = -1; +static int hf_nlsp_header_length = -1; +static int hf_nlsp_minor_version = -1; +static int hf_nlsp_nr = -1; +static int hf_nlsp_type = -1; +static int hf_nlsp_major_version = -1; +static int hf_nlsp_packet_length = -1; +static int hf_nlsp_hello_state = -1; +static int hf_nlsp_hello_multicast = -1; +static int hf_nlsp_hello_circuit_type = -1; +static int hf_nlsp_hello_holding_timer = -1; +static int hf_nlsp_hello_priority = -1; +static int hf_nlsp_lsp_sequence_number = -1; +static int hf_nlsp_lsp_checksum = -1; +static int hf_nlsp_lsp_p = -1; +static int hf_nlsp_lsp_attached_flag = -1; +static int hf_nlsp_lsp_lspdbol = -1; +static int hf_nlsp_lsp_router_type = -1; +static int hf_nlsp_lsp_link_info_clv_flags_cost_present = -1; +static int hf_nlsp_lsp_link_info_clv_flags_cost_metric = -1; +static int hf_nlsp_lsp_link_info_clv_flags_cost = -1; + +/* Generated from convert_proto_tree_add_text.pl */ +static int hf_nlsp_psnp_lsp_checksum = -1; +static int hf_nlsp_csnp_start_lsp_id_source_id = -1; +static int hf_nlsp_svcs_info_node_number = -1; +static int hf_nlsp_ext_routes_rip_delay = -1; +static int hf_nlsp_psnp_source_id_system_id = -1; +static int hf_nlsp_svcs_info_socket = -1; +static int hf_nlsp_hello_sending_router_system_id = -1; +static int hf_nlsp_csnp_start_lsp_id_lsp_number = -1; +static int hf_nlsp_lsp_id_system_id = -1; +static int hf_nlsp_psnp_lsp_id_pseudonode_id = -1; +static int hf_nlsp_csnp_end_lsp_id_lsp_number = -1; +static int hf_nlsp_remaining_lifetime = -1; +static int hf_nlsp_csnp_remaining_lifetime = -1; +static int hf_nlsp_psnp_lsp_id_source_id = -1; +static int hf_nlsp_ext_routes_hops = -1; +static int hf_nlsp_hello_local_mtu_mtu_size = -1; +static int hf_nlsp_link_info_throughput = -1; +static int hf_nlsp_link_info_media_type = -1; +static int hf_nlsp_mgt_info_name = -1; +static int hf_nlsp_mgt_info_node_number = -1; +static int hf_nlsp_csnp_end_lsp_id_source_id = -1; +static int hf_nlsp_csnp_lsp_id_pseudonode_id = -1; +static int hf_nlsp_psnp_lsp_sequence_number = -1; +static int hf_nlsp_link_info_mtu_size = -1; +static int hf_nlsp_lsp_id_lsp_number = -1; +static int hf_nlsp_unknown_code = -1; +static int hf_nlsp_mgt_info_ipx_version_number = -1; +static int hf_nlsp_link_info_router_pseudonode_id = -1; +static int hf_nlsp_psnp_source_id_pseudonode_id = -1; +static int hf_nlsp_csnp_lsp_id_lsp_number = -1; +static int hf_nlsp_csnp_source_id_pseudonode_id = -1; +static int hf_nlsp_csnp_end_lsp_id_pseudonode_id = -1; +static int hf_nlsp_csnp_lsp_sequence_number = -1; +static int hf_nlsp_link_info_router_system_id = -1; +static int hf_nlsp_svcs_info_type = -1; +static int hf_nlsp_csnp_lsp_checksum = -1; +static int hf_nlsp_hello_local_wan_circuit_id = -1; +static int hf_nlsp_svcs_info_service_name = -1; +static int hf_nlsp_mgt_info_name_length = -1; +static int hf_nlsp_neighbor = -1; +static int hf_nlsp_area_address_network_number = -1; +static int hf_nlsp_link_info_delay = -1; +static int hf_nlsp_csnp_start_lsp_id_pseudonode_id = -1; +static int hf_nlsp_svcs_info_network_number = -1; +static int hf_nlsp_csnp_source_id_system_id = -1; +static int hf_nlsp_mgt_info_network_number = -1; +static int hf_nlsp_hello_designated_router_pseudonode_id = -1; +static int hf_nlsp_lsp_id_pseudonode_id = -1; +static int hf_nlsp_csnp_lsp_id_source_id = -1; +static int hf_nlsp_psnp_remaining_lifetime = -1; +static int hf_nlsp_area_address_mask = -1; +static int hf_nlsp_hello_designated_router_system_id = -1; +static int hf_nlsp_svcs_info_hops_to_reach_the_service = -1; +static int hf_nlsp_psnp_lsp_id_lsp_number = -1; +static int hf_nlsp_ext_routes_network_number = -1; + +static expert_field ei_nlsp_short_packet = EI_INIT; +static expert_field ei_nlsp_long_packet = EI_INIT; +static expert_field ei_nlsp_major_version = EI_INIT; +static expert_field ei_nlsp_type = EI_INIT; + +static gint ett_nlsp = -1; +static gint ett_nlsp_hello_clv_area_addr = -1; +static gint ett_nlsp_hello_clv_neighbors = -1; +static gint ett_nlsp_hello_local_mtu = -1; +static gint ett_nlsp_hello_clv_unknown = -1; +static gint ett_nlsp_lsp_info = -1; +static gint ett_nlsp_lsp_clv_area_addr = -1; +static gint ett_nlsp_lsp_clv_mgt_info = -1; +static gint ett_nlsp_lsp_clv_link_info = -1; +static gint ett_nlsp_lsp_clv_svcs_info = -1; +static gint ett_nlsp_lsp_clv_ext_routes = -1; +static gint ett_nlsp_lsp_clv_unknown = -1; +static gint ett_nlsp_csnp_lsp_entries = -1; +static gint ett_nlsp_csnp_lsp_entry = -1; +static gint ett_nlsp_csnp_clv_unknown = -1; +static gint ett_nlsp_psnp_lsp_entries = -1; +static gint ett_nlsp_psnp_lsp_entry = -1; +static gint ett_nlsp_psnp_clv_unknown = -1; + +#define PACKET_TYPE_MASK 0x1f + +/* + * See + * + * http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/nlsp.htm + * + * for some information about Hello packets. + */ + +#define NLSP_TYPE_L1_HELLO 15 +#define NLSP_TYPE_WAN_HELLO 17 +#define NLSP_TYPE_L1_LSP 18 +#define NLSP_TYPE_L1_CSNP 24 +#define NLSP_TYPE_L1_PSNP 26 + +static const value_string nlsp_packet_type_vals[] = { + { NLSP_TYPE_L1_HELLO, "L1 Hello"}, + { NLSP_TYPE_WAN_HELLO, "WAN Hello"}, + { NLSP_TYPE_L1_LSP, "L1 LSP"}, + { NLSP_TYPE_L1_CSNP, "L1 CSNP"}, + { NLSP_TYPE_L1_PSNP, "L1 PSNP"}, + { 0, NULL} +}; + +static const value_string nlsp_attached_flag_vals[] = { + { 0, "Other routing areas cannot be reached through this router"}, + { 1, "Other routing areas can be reached through this router"}, + { 0, NULL} +}; + +static const value_string nlsp_router_type_vals[] = { + { 1, "Level 1 Router"}, + { 3, "Level 1 and Level 2 Router"}, + { 0, NULL} +}; + +static const true_false_string tfs_internal_external = { "Internal", "External" }; + +/* + * Our sub-packet dismantle structure for CLV's + */ +typedef struct { + int optcode; /* code for option */ + const char *tree_text; /* text for fold out */ + gint *tree_id; /* id for add_item */ + void (*dissect)(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, + int offset, int length); +} nlsp_clv_handle_t; + +/* + * Name: nlsp_dissect_clvs() + * + * Description: + * Dispatch routine to shred all the CLVs in a packet. We just + * walk through the clv entries in the packet. For each one, we + * search the passed in valid clv's for this protocol (opts) for + * a matching code. If found, we add to the display tree and + * then call the dissector. If it is not, we just post an + * "unknown" clv entry using the passed in unknown clv tree id. + * XXX: The "unknown tree id" is an 'ett' index for use + * when creating a subtree; + * Since the 'unknown' subtree was not actually used in the + * code below, what was the intention for this ? + * For now: code related to creating an 'unknown' subtrree + * disabled. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * nlsp_clv_handle_t * : NULL dissector terminated array of codes + * and handlers (along with tree text and tree id's). + * int : length of CLV area. + * int : unknown clv tree id + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +nlsp_dissect_clvs(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + const nlsp_clv_handle_t *opts, int len, int unknown_tree_id _U_) +{ + guint8 code; + guint8 length; + int q; + proto_tree *clv_tree; + + while ( len > 0 ) { + code = tvb_get_guint8(tvb, offset); + offset += 1; + len -= 1; + if (len == 0) + break; + + length = tvb_get_guint8(tvb, offset); + offset += 1; + len -= 1; + if (len == 0) + break; + + if ( len < length ) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short CLV header (%d vs %d)", length, len ); + return; + } + q = 0; + while ((opts[q].dissect != NULL )&&( opts[q].optcode != code )){ + q++; + } + if ( opts[q].dissect ) { + /* adjust by 2 for code/len octets */ + clv_tree = proto_tree_add_subtree_format(tree, tvb, offset - 2, + length + 2, *opts[q].tree_id, NULL, "%s (%u)", + opts[q].tree_text, length ); + opts[q].dissect(tvb, pinfo, clv_tree, offset, + length); + } else { + proto_item* ti; + ti = proto_tree_add_uint_format_value(tree, hf_nlsp_unknown_code, tvb, offset - 2, + 1, code, "%u (%u)", code, length); + proto_item_set_len(ti, length + 2); + } + offset += length; + len -= length; + } +} + +/* + * Name: dissect_area_address_clv() + * + * Description: + * Decode an area address clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_area_address_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + while (length > 0) { + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short area address entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_area_address_network_number, tvb, offset, 4, ENC_BIG_ENDIAN); + + offset += 4; + length -= 4; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short area address entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_area_address_mask, tvb, offset, 4, ENC_BIG_ENDIAN); + + offset += 4; + length -= 4; + } +} + +/* + * Name: dissect_neighbor_clv() + * + * Description: + * Decode an neighbor clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_neighbor_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + while (length > 0) { + if (length < 6) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, + tvb, offset, -1, "Short neighbor entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_neighbor, tvb, offset, 6, ENC_NA); + offset += 6; + length -= 6; + } +} + +/* + * Name: dissect_hello_local_mtu_clv() + * + * Description: + * Decode for a hello packet's local MTU clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_hello_local_mtu_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_hello_local_mtu_mtu_size, tvb, offset, 4, ENC_BIG_ENDIAN); +} + +static const nlsp_clv_handle_t clv_hello_opts[] = { + { + 0xC0, + "Area address(es)", + &ett_nlsp_hello_clv_area_addr, + dissect_area_address_clv + }, + { + 6, + "Neighbors", + &ett_nlsp_hello_clv_neighbors, + dissect_neighbor_clv + }, + { + 0xC5, + "Local MTU", + &ett_nlsp_hello_local_mtu, + dissect_hello_local_mtu_clv + }, + + { + 0, + "", + NULL, + NULL + } +}; + +/* + * Name: nlsp_dissect_nlsp_hello() + * + * Description: + * This procedure rips apart NLSP hellos. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to add to. May be NULL. + * int offset : our offset into packet data. + * int : hello type, a la NLSP_TYPE_* values + * int : header length of packet. + * + * Output: + * void, will modify proto_tree if not NULL. + */ +#define NLSP_HELLO_CTYPE_MASK 0x03 +#define NLSP_HELLO_STATE_MASK 0xC0 +#define NLSP_HELLO_MULTICAST_MASK 0x10 + +static const value_string nlsp_hello_state_vals[] = { + { 0, "Up" }, + { 1, "Initializing" }, + { 2, "Down" }, + { 0, NULL } +}; + +#define NLSP_HELLO_TYPE_RESERVED 0 +#define NLSP_HELLO_TYPE_LEVEL_1 1 +#define NLSP_HELLO_TYPE_LEVEL_2 2 +#define NLSP_HELLO_TYPE_LEVEL_12 3 + +static const value_string nlsp_hello_circuit_type_vals[] = { + { NLSP_HELLO_TYPE_RESERVED, "Reserved 0 (discard PDU)"}, + { NLSP_HELLO_TYPE_LEVEL_1, "Level 1 only"}, + { NLSP_HELLO_TYPE_LEVEL_2, "Level 2 only"}, + { NLSP_HELLO_TYPE_LEVEL_12, "Level 1 and 2"}, + { 0, NULL} +}; + +#define NLSP_HELLO_PRIORITY_MASK 0x7f + +static void +nlsp_dissect_nlsp_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + int offset, int hello_type, int header_length) +{ + guint16 packet_length; + int len; + + if (hello_type == NLSP_TYPE_WAN_HELLO) { + proto_tree_add_item(tree, hf_nlsp_hello_state, tvb, + offset, 1, ENC_BIG_ENDIAN); + } else { + proto_tree_add_item(tree, hf_nlsp_hello_multicast, tvb, + offset, 1, ENC_BIG_ENDIAN); + } + proto_tree_add_item(tree, hf_nlsp_hello_circuit_type, tvb, + offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + proto_tree_add_item(tree, hf_nlsp_hello_sending_router_system_id, tvb, offset, 6, ENC_NA); + + col_append_fstr(pinfo->cinfo, COL_INFO, ", System ID: %s", + tvb_ether_to_str(pinfo->pool, tvb, offset)); + + offset += 6; + + proto_tree_add_item(tree, hf_nlsp_hello_holding_timer, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + + packet_length = tvb_get_ntohs(tvb, offset); + proto_tree_add_uint(tree, hf_nlsp_packet_length, tvb, offset, 2, packet_length); + offset += 2; + + proto_tree_add_item(tree, hf_nlsp_hello_priority, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + if (hello_type == NLSP_TYPE_WAN_HELLO) { + proto_tree_add_item(tree, hf_nlsp_hello_local_wan_circuit_id, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + } else { + proto_tree_add_item(tree, hf_nlsp_hello_designated_router_system_id, tvb, offset, 6, ENC_NA); + proto_tree_add_item(tree, hf_nlsp_hello_designated_router_pseudonode_id, tvb, offset+6, 1, ENC_BIG_ENDIAN); + offset += 7; + } + + len = packet_length - header_length; + if (len < 0) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_long_packet, tvb, offset, -1, + "packet header length %d went beyond packet", + header_length); + return; + } + + /* + * Now, we need to decode our CLVs. We need to pass in + * our list of valid ones! + */ + nlsp_dissect_clvs(tvb, pinfo, tree, offset, + clv_hello_opts, len, ett_nlsp_hello_clv_unknown); +} + +/* + * Name: dissect_lsp_mgt_info_clv() + * + * Description: + * Decode for a lsp packet's management information clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_lsp_mgt_info_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + guint8 name_length; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short management info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_mgt_info_network_number, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + length -= 4; + + if (length < 6) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short management info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_mgt_info_node_number, tvb, offset, 6, ENC_NA); + offset += 6; + length -= 6; + + if (length < 1) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short management info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_mgt_info_ipx_version_number, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + length -= 1; + + if (length < 1) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short management info entry"); + return; + } + name_length = tvb_get_guint8(tvb, offset); + proto_tree_add_item(tree, hf_nlsp_mgt_info_name_length, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + length -= 1; + + if (name_length != 0) { + if (length < name_length) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short management info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_mgt_info_name, tvb, offset, name_length, ENC_NA|ENC_ASCII); + } +} + +/* + * Name: dissect_lsp_link_info_clv() + * + * Description: + * Decode for a lsp packet's link information clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static const value_string media_type_vals[] = { + { 0x0000, "Generic LAN" }, + { 0x8000, "Generic WAN" }, + { 0x0001, "Localtalk" }, + { 0x0002, "Ethernet II" }, + { 0x0003, "IEEE 802.3 with IEEE 802.2 without SNAP" }, + { 0x0005, "IEEE 802.3 with IPX header and no 802.2 header" }, + { 0x000A, "IEEE 802.3 with IEEE 802.2 and SNAP" }, + { 0x0004, "IEEE 802.5 with IEEE 802.2 without SNAP" }, + { 0x000B, "IEEE 802.5 with IEEE 802.2 and SNAP" }, + { 0x0006, "IEEE 802.4" }, + { 0x0007, "IBM PC Network II" }, + { 0x0008, "Gateway G/Net" }, + { 0x0009, "Proteon ProNET" }, + { 0x000C, "Racore LANPAC" }, + { 0x800D, "ISDN" }, + { 0x000E, "ARCnet" }, + { 0x000F, "IBM PC Network II with 802.2 without SNAP" }, + { 0x0010, "IBM PC Network II with 802.2 and SNAP" }, + { 0x0011, "Corvus OmniNet at 4 Mbps" }, + { 0x0012, "Harris Adacom" }, + { 0x0013, "IP tunnel" }, + { 0x8013, "IP Relay" }, + { 0x0014, "FDDI with 802.2 without SNAP" }, + { 0x0015, "Commtex IVDLAN" }, + { 0x0016, "Dataco OSI" }, + { 0x0017, "FDDI with 802.2 and SNAP" }, + { 0x0018, "IBM SDLC tunnel" }, + { 0x0019, "PC Office frame" }, + { 0x001A, "Hypercommunications WAIDNET" }, + { 0x801C, "PPP" }, + { 0x801D, "Proxim RangeLAN" }, + { 0x801E, "X.25" }, + { 0x801F, "Frame Relay" }, + { 0x0020, "Integrated Workstations BUS-NET" }, + { 0x8021, "Novell SNA Links" }, + { 0, NULL } +}; + +static void +dissect_lsp_link_info_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + guint8 flags_cost; + + if (length < 1) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + if (tree) { + flags_cost = tvb_get_guint8(tvb, offset); + proto_tree_add_item(tree, hf_nlsp_lsp_link_info_clv_flags_cost_present, tvb, offset, 1, ENC_BIG_ENDIAN); + if (!(flags_cost & 0x80)) { + /* + * 0x80 clear => cost present. + */ + proto_tree_add_item(tree, hf_nlsp_lsp_link_info_clv_flags_cost_metric, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_nlsp_lsp_link_info_clv_flags_cost, tvb, offset, 1, ENC_BIG_ENDIAN); + } + } + offset += 1; + length -= 1; + + if (length < 3) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + offset += 3; /* Reserved */ + length -= 3; + + if (length < 7) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_link_info_router_system_id, tvb, offset, 6, ENC_NA); + proto_tree_add_item(tree, hf_nlsp_link_info_router_pseudonode_id, tvb, offset+6, 1, ENC_BIG_ENDIAN); + offset += 7; + length -= 7; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_link_info_mtu_size, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + length -= 4; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_link_info_delay, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + length -= 4; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_link_info_throughput, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + length -= 4; + + if (length < 2) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short link info entry"); + return; + } + proto_tree_add_item(tree, hf_nlsp_link_info_media_type, tvb, offset, 2, ENC_BIG_ENDIAN); +} + +/* + * Name: dissect_lsp_svcs_info_clv() + * + * Description: + * Decode for a lsp packet's services information clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_lsp_svcs_info_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + if (length < 1) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short services info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_svcs_info_hops_to_reach_the_service, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + length -= 1; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short services info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_svcs_info_network_number, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + length -= 4; + + if (length < 6) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short services info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_svcs_info_node_number, tvb, offset, 6, ENC_NA); + offset += 6; + length -= 6; + + if (length < 2) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short services info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_svcs_info_socket, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + length -= 2; + + if (length < 2) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short services info entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_svcs_info_type, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + length -= 2; + + if (length > 0) { + proto_tree_add_item(tree, hf_nlsp_svcs_info_service_name, tvb, offset, length, ENC_NA|ENC_ASCII); + } +} + + +/* + * Name: dissect_lsp_ext_routes_clv() + * + * Description: + * Decode for a lsp packet's external routes clv. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of clv we are decoding + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_lsp_ext_routes_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + while (length > 0) { + proto_tree_add_item(tree, hf_nlsp_ext_routes_hops, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + length -= 1; + + if (length < 4) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short external routes entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_ext_routes_network_number, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + length -= 4; + + if (length < 2) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short external routes entry"); + return; + } + + proto_tree_add_item(tree, hf_nlsp_ext_routes_rip_delay, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + length -= 2; + } +} + +static const nlsp_clv_handle_t clv_l1_lsp_opts[] = { + { + 0xC0, + "Area address(es)", + &ett_nlsp_lsp_clv_area_addr, + dissect_area_address_clv + }, + { + 0xC1, + "Management information", + &ett_nlsp_lsp_clv_mgt_info, + dissect_lsp_mgt_info_clv + }, + { + 0xC2, + "Link information", + &ett_nlsp_lsp_clv_link_info, + dissect_lsp_link_info_clv + }, + { + 0xC3, + "Services information", + &ett_nlsp_lsp_clv_svcs_info, + dissect_lsp_svcs_info_clv + }, + { + 0xC4, + "External routes", + &ett_nlsp_lsp_clv_ext_routes, + dissect_lsp_ext_routes_clv + }, + + { + 0, + "", + NULL, + NULL + } +}; + +/* + * Name: nlsp_dissect_nlsp_lsp() + * + * Description: + * Print out the LSP part of the main header and then call the CLV + * de-mangler with the right list of valid CLVs. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to add to. May be NULL. + * int offset : our offset into packet data. + * int : header length of packet. + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +/* P | ATT | OVERFLOW | ROUTER TYPE FIELD description */ +#define NLSP_LSP_PARTITION_MASK 0x80 +#define NLSP_LSP_PARTITION_SHIFT 7 +#define NLSP_LSP_PARTITION(info) (((info) & NLSP_LSP_PARTITION_MASK) >> NLSP_LSP_PARTITION_SHIFT) + +#define NLSP_LSP_ATT_MASK 0x78 +#define NLSP_LSP_ATT_SHIFT 3 +#define NLSP_LSP_ATT(info) (((info) & NLSP_LSP_ATT_MASK) >> NLSP_LSP_ATT_SHIFT) + +#define NLSP_LSP_OVERFLOW_MASK 0x04 +#define NLSP_LSP_OVERFLOW_SHIFT 2 +#define NLSP_LSP_OVERFLOW(info) (((info) & NLSP_LSP_OVERFLOW_MASK) >> NLSP_LSP_OVERFLOW_SHIFT) + +#define NLSP_LSP_ROUTER_TYPE_MASK 0x03 +#define NLSP_LSP_ROUTER_TYPE(info) ((info) & NLSP_LSP_ROUTER_TYPE_MASK) + +static void +nlsp_dissect_nlsp_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + int offset, int header_length) +{ + guint16 packet_length; + guint16 remaining_lifetime; + guint32 sequence_number; + int len; + + packet_length = tvb_get_ntohs(tvb, offset); + proto_tree_add_uint(tree, hf_nlsp_packet_length, tvb, + offset, 2, packet_length); + offset += 2; + + remaining_lifetime = tvb_get_ntohs(tvb, offset); + proto_tree_add_uint(tree, hf_nlsp_remaining_lifetime, tvb, offset, 2, remaining_lifetime); + offset += 2; + + col_append_fstr(pinfo->cinfo, COL_INFO, ", LSP ID: %s", + tvb_ether_to_str(pinfo->pool, tvb, offset)); + + proto_tree_add_item(tree, hf_nlsp_lsp_id_system_id, tvb, offset, 6, ENC_NA); + + offset += 6; + /* XXX - append the pseudonode ID */ + proto_tree_add_item(tree, hf_nlsp_lsp_id_pseudonode_id, tvb, offset, 1, ENC_BIG_ENDIAN); + + offset += 1; + proto_tree_add_item(tree, hf_nlsp_lsp_id_lsp_number, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + sequence_number = tvb_get_ntohl(tvb, offset); + col_append_fstr(pinfo->cinfo, COL_INFO, + ", Sequence: 0x%08x, Lifetime: %us", + sequence_number, remaining_lifetime); + + proto_tree_add_uint(tree, hf_nlsp_lsp_sequence_number, tvb, + offset, 4, sequence_number); + offset += 4; + + /* XXX -> we could validate the cksum here! */ + proto_tree_add_checksum(tree, tvb, offset, hf_nlsp_lsp_checksum, -1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); + offset += 2; + + if (tree) { + proto_tree_add_item(tree, hf_nlsp_lsp_p, tvb, + offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_nlsp_lsp_attached_flag, tvb, + offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_nlsp_lsp_lspdbol, tvb, + offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_nlsp_lsp_router_type, tvb, + offset, 1, ENC_BIG_ENDIAN); + } + offset += 1; + + len = packet_length - header_length; + if (len < 0) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_long_packet, tvb, offset, -1, + "packet header length %d went beyond packet", + header_length); + return; + } + + /* + * Now, we need to decode our CLVs. We need to pass in + * our list of valid ones! + */ + nlsp_dissect_clvs(tvb, pinfo, tree, offset, + clv_l1_lsp_opts, len, ett_nlsp_lsp_clv_unknown); +} + +/* + * Name: dissect_snp_lsp_entries() + * + * Description: + * All the snp packets use a common payload format. We have up + * to n entries (based on length), which are made of: + * 2 : remaining life time + * 8 : lsp id + * 4 : sequence number + * 2 : checksum + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to fill out. May be NULL + * int : offset into packet data where we are. + * int : length of payload to decode. + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +dissect_csnp_lsp_entries(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + proto_tree *subtree; + + while (length > 0) { + if (length < 16) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short CSNP header entry"); + return; + } + + subtree = proto_tree_add_subtree_format(tree, tvb, offset, 16, + ett_nlsp_csnp_lsp_entry, NULL, "LSP-ID: %s, Sequence: 0x%08x, Lifetime: %5us, Checksum: 0x%04x", + tvb_ether_to_str(pinfo->pool, tvb, offset+2), /* XXX - rest of system ID */ + tvb_get_ntohl(tvb, offset+10), + tvb_get_ntohs(tvb, offset), + tvb_get_ntohs(tvb, offset+14)); + + proto_tree_add_item(subtree, hf_nlsp_csnp_lsp_id_source_id, tvb, offset+2, 6, ENC_NA); + proto_tree_add_item(subtree, hf_nlsp_csnp_lsp_id_pseudonode_id, tvb, offset+8, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(subtree, hf_nlsp_csnp_lsp_id_lsp_number, tvb, offset+9, 1, ENC_BIG_ENDIAN); + + proto_tree_add_item(subtree, hf_nlsp_csnp_lsp_sequence_number, tvb, offset+10, 4, ENC_BIG_ENDIAN); + + proto_tree_add_item(subtree, hf_nlsp_csnp_remaining_lifetime, tvb, offset, 2, ENC_BIG_ENDIAN); + + proto_tree_add_checksum(subtree, tvb, offset+14, hf_nlsp_csnp_lsp_checksum, -1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); + + length -= 16; + offset += 16; + } +} + +static void +dissect_psnp_lsp_entries(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, + int length) +{ + proto_tree *subtree; + + while (length > 0) { + if (length < 16) { + proto_tree_add_expert_format(tree, pinfo, &ei_nlsp_short_packet, tvb, offset, -1, + "Short PSNP header entry"); + return; + } + + subtree = proto_tree_add_subtree_format(tree, tvb, offset, 16, + ett_nlsp_psnp_lsp_entry, NULL, "LSP-ID: %s, Sequence: 0x%08x, Lifetime: %5us, Checksum: 0x%04x", + tvb_ether_to_str(pinfo->pool, tvb, offset+2), /* XXX - rest of system ID */ + tvb_get_ntohl(tvb, offset+10), + tvb_get_ntohs(tvb, offset), + tvb_get_ntohs(tvb, offset+14)); + + proto_tree_add_item(subtree, hf_nlsp_psnp_lsp_id_source_id, tvb, offset+2, 6, ENC_NA); + proto_tree_add_item(subtree, hf_nlsp_psnp_lsp_id_pseudonode_id, tvb, offset+8, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(subtree, hf_nlsp_psnp_lsp_id_lsp_number, tvb, offset+9, 1, ENC_BIG_ENDIAN); + + proto_tree_add_item(subtree, hf_nlsp_psnp_lsp_sequence_number, tvb, offset+10, 4, ENC_BIG_ENDIAN); + + proto_tree_add_item(subtree, hf_nlsp_psnp_remaining_lifetime, tvb, offset, 2, ENC_BIG_ENDIAN); + + proto_tree_add_checksum(subtree, tvb, offset+14, hf_nlsp_psnp_lsp_checksum, -1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); + + length -= 16; + offset += 16; + } +} + +static const nlsp_clv_handle_t clv_l1_csnp_opts[] = { + { + 9, + "LSP entries", + &ett_nlsp_csnp_lsp_entries, + dissect_csnp_lsp_entries + }, + + { + 0, + "", + NULL, + NULL + } +}; + +/* + * Name: nlsp_dissect_nlsp_csnp() + * + * Description: + * Tear apart a L1 CSNP header and then call into payload dissect + * to pull apart the lsp id payload. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to add to. May be NULL. + * int offset : our offset into packet data. + * int : header length of packet. + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +nlsp_dissect_nlsp_csnp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + int offset, int header_length) +{ + guint16 packet_length; + int len; + + packet_length = tvb_get_ntohs(tvb, offset); + proto_tree_add_uint(tree, hf_nlsp_packet_length, tvb, offset, 2, packet_length); + offset += 2; + + col_append_fstr(pinfo->cinfo, COL_INFO, ", Source ID: %s", + tvb_ether_to_str(pinfo->pool, tvb, offset)); + proto_tree_add_item(tree, hf_nlsp_csnp_source_id_system_id, tvb, offset, 6, ENC_NA); + offset += 6; + proto_tree_add_item(tree, hf_nlsp_csnp_source_id_pseudonode_id, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + col_append_fstr(pinfo->cinfo, COL_INFO, ", Start LSP ID: %s", + tvb_ether_to_str(pinfo->pool, tvb, offset)); + proto_tree_add_item(tree, hf_nlsp_csnp_start_lsp_id_source_id, tvb, offset, 6, ENC_NA); + offset += 6; + /* XXX - append the pseudonode ID */ + proto_tree_add_item(tree, hf_nlsp_csnp_start_lsp_id_pseudonode_id, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + proto_tree_add_item(tree, hf_nlsp_csnp_start_lsp_id_lsp_number, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + col_append_fstr(pinfo->cinfo, COL_INFO, ", End LSP ID: %s", + tvb_ether_to_str(pinfo->pool, tvb, offset)); + proto_tree_add_item(tree, hf_nlsp_csnp_end_lsp_id_source_id, tvb, offset, 6, ENC_NA); + offset += 6; + /* XXX - append the pseudonode ID */ + proto_tree_add_item(tree, hf_nlsp_csnp_end_lsp_id_pseudonode_id, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + proto_tree_add_item(tree, hf_nlsp_csnp_end_lsp_id_lsp_number, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + len = packet_length - header_length; + if (len < 0) { + return; + } + /* Call into payload dissector */ + nlsp_dissect_clvs(tvb, pinfo, tree, offset, + clv_l1_csnp_opts, len, ett_nlsp_csnp_clv_unknown); +} + +static const nlsp_clv_handle_t clv_l1_psnp_opts[] = { + { + 9, + "LSP entries", + &ett_nlsp_psnp_lsp_entries, + dissect_psnp_lsp_entries + }, + + { + 0, + "", + NULL, + NULL + } +}; + +/* + * Name: nlsp_dissect_nlsp_psnp() + * + * Description: + * Tear apart a L1 PSNP header and then call into payload dissect + * to pull apart the lsp id payload. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * proto_tree * : protocol display tree to add to. May be NULL. + * int offset : our offset into packet data. + * int : header length of packet. + * + * Output: + * void, but we will add to proto tree if !NULL. + */ +static void +nlsp_dissect_nlsp_psnp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + int offset, int header_length) +{ + guint16 packet_length; + int len; + + packet_length = tvb_get_ntohs(tvb, offset); + proto_tree_add_uint(tree, hf_nlsp_packet_length, tvb, + offset, 2, packet_length); + offset += 2; + + col_append_fstr(pinfo->cinfo, COL_INFO, ", Source ID: %s", + tvb_ether_to_str(pinfo->pool, tvb, offset)); + proto_tree_add_item(tree, hf_nlsp_psnp_source_id_system_id, tvb, offset, 6, ENC_NA); + offset += 6; + /* XXX - add the pseudonode ID */ + proto_tree_add_item(tree, hf_nlsp_psnp_source_id_pseudonode_id, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + len = packet_length - header_length; + if (len < 0) { + return; + } + /* Call into payload dissector */ + nlsp_dissect_clvs(tvb, pinfo, tree, offset, + clv_l1_psnp_opts, len, ett_nlsp_psnp_clv_unknown); +} + +/* + * Name: dissect_nlsp() + * + * Description: + * Main entry area for nlsp de-mangling. This will build the + * main nlsp tree data and call the sub-protocols as needed. + * + * Input: + * tvbuff_t * : tvbuffer for packet data + * packet_info * : info for current packet + * proto_tree * : tree of display data. May be NULL. + * + * Output: + * void, but we will add to the proto_tree if it is not NULL. + */ +static int +dissect_nlsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + proto_item *ti, *type_item; + proto_tree *nlsp_tree; + int offset = 0; + guint8 nlsp_major_version; + guint8 nlsp_header_length; + guint8 packet_type_flags; + guint8 packet_type; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "NLSP"); + col_clear(pinfo->cinfo, COL_INFO); + + ti = proto_tree_add_item(tree, proto_nlsp, tvb, 0, -1, ENC_NA); + nlsp_tree = proto_item_add_subtree(ti, ett_nlsp); + + proto_tree_add_item(nlsp_tree, hf_nlsp_irpd, tvb, offset, 1, + ENC_BIG_ENDIAN ); + offset += 1; + + nlsp_header_length = tvb_get_guint8(tvb, 1); + proto_tree_add_uint(nlsp_tree, hf_nlsp_header_length, tvb, + offset, 1, nlsp_header_length ); + offset += 1; + + proto_tree_add_item(nlsp_tree, hf_nlsp_minor_version, tvb, + offset, 1, ENC_BIG_ENDIAN ); + offset += 1; + + offset += 1; /* Reserved */ + + packet_type_flags = tvb_get_guint8(tvb, offset); + packet_type = packet_type_flags & PACKET_TYPE_MASK; + col_add_str(pinfo->cinfo, COL_INFO, + val_to_str(packet_type, nlsp_packet_type_vals, "Unknown (%u)")); + if (packet_type == NLSP_TYPE_L1_LSP) { + proto_tree_add_boolean(nlsp_tree, hf_nlsp_nr, tvb, offset, 1, packet_type_flags ); + } + type_item = proto_tree_add_uint(nlsp_tree, hf_nlsp_type, tvb, offset, 1, packet_type_flags ); + offset += 1; + + nlsp_major_version = tvb_get_guint8(tvb, offset); + ti = proto_tree_add_item(nlsp_tree, hf_nlsp_major_version, tvb, + offset, 1, ENC_BIG_ENDIAN ); + if (nlsp_major_version != 1){ + expert_add_info_format(pinfo, ti, &ei_nlsp_major_version, + "Unknown NLSP version (%d vs 1)", + nlsp_major_version); + } + offset += 1; + + offset += 2; /* Reserved */ + + switch (packet_type) { + + case NLSP_TYPE_L1_HELLO: + case NLSP_TYPE_WAN_HELLO: + nlsp_dissect_nlsp_hello(tvb, pinfo, nlsp_tree, offset, + packet_type, nlsp_header_length); + break; + + case NLSP_TYPE_L1_LSP: + nlsp_dissect_nlsp_lsp(tvb, pinfo, nlsp_tree, offset, + nlsp_header_length); + break; + + case NLSP_TYPE_L1_CSNP: + nlsp_dissect_nlsp_csnp(tvb, pinfo, nlsp_tree, offset, + nlsp_header_length); + break; + + case NLSP_TYPE_L1_PSNP: + nlsp_dissect_nlsp_psnp(tvb, pinfo, nlsp_tree, offset, + nlsp_header_length); + break; + + default: + expert_add_info(pinfo, type_item, &ei_nlsp_type); + } + return tvb_captured_length(tvb); +} + +/* + * Name: proto_register_nlsp() + * + * Description: + * main register for NLSP protocol set. We register some display + * formats and the protocol module variables. + * + * NOTE: this procedure to autolinked by the makefile process that + * builds register.c + * + * Input: + * void + * + * Output: + * void + */ +void +proto_register_nlsp(void) +{ + static hf_register_info hf[] = { + { &hf_nlsp_irpd, + { "NetWare Link Services Protocol Discriminator", "nlsp.irpd", + FT_UINT8, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_header_length, + { "PDU Header Length", "nlsp.header_length", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_minor_version, + { "Minor Version", "nlsp.minor_version", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_nr, + { "Multi-homed Non-routing Server", "nlsp.nr", + FT_BOOLEAN, 8, NULL, 0x80, + NULL, HFILL } + }, + + { &hf_nlsp_type, + { "Packet Type", "nlsp.type", + FT_UINT8, BASE_DEC, VALS(nlsp_packet_type_vals), PACKET_TYPE_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_major_version, + { "Major Version", "nlsp.major_version", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_packet_length, + { "Packet Length", "nlsp.packet_length", + FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_hello_state, + { "State", "nlsp.hello.state", + FT_UINT8, BASE_DEC, VALS(nlsp_hello_state_vals), NLSP_HELLO_STATE_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_hello_multicast, + { "Multicast Routing", "nlsp.hello.multicast", + FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), NLSP_HELLO_MULTICAST_MASK, + "If set, this router supports multicast routing", HFILL } + }, + + { &hf_nlsp_hello_circuit_type, + { "Circuit Type", "nlsp.hello.circuit_type", + FT_UINT8, BASE_DEC, VALS(nlsp_hello_circuit_type_vals), NLSP_HELLO_CTYPE_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_hello_holding_timer, + { "Holding Timer", "nlsp.hello.holding_timer", + FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_seconds, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_hello_priority, + { "Priority", "nlsp.hello.priority", + FT_UINT8, BASE_DEC, NULL, NLSP_HELLO_PRIORITY_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_sequence_number, + { "Sequence Number", "nlsp.sequence_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_checksum, + { "Checksum", "nlsp.lsp.checksum", + FT_UINT16, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_p, + { "Partition Repair", "nlsp.lsp.partition_repair", + FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), NLSP_LSP_PARTITION_MASK, + "If set, this router supports the optional Partition Repair function", HFILL } + }, + + { &hf_nlsp_lsp_attached_flag, + { "Attached Flag", "nlsp.lsp.attached_flag", + FT_UINT8, BASE_DEC, VALS(nlsp_attached_flag_vals), NLSP_LSP_ATT_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_lspdbol, + { "LSP Database Overloaded", "nlsp.lsp.lspdbol", + FT_BOOLEAN, 8, NULL, NLSP_LSP_OVERFLOW_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_router_type, + { "Router Type", "nlsp.lsp.router_type", + FT_UINT8, BASE_DEC, VALS(nlsp_router_type_vals), NLSP_LSP_ROUTER_TYPE_MASK, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_link_info_clv_flags_cost_present, + { "Cost present", "nlsp.lsp.link_info_clv.flags.cost_present", + FT_BOOLEAN, 8, TFS(&tfs_no_yes), 0x80, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_link_info_clv_flags_cost_metric, + { "Cost metric", "nlsp.lsp.link_info_clv.flags.cost_metric", + FT_BOOLEAN, 8, TFS(&tfs_internal_external), 0x40, + NULL, HFILL } + }, + + { &hf_nlsp_lsp_link_info_clv_flags_cost, + { "Cost", "nlsp.lsp.link_info_clv.flags.cost", + FT_UINT8, BASE_DEC, NULL, 0x3F, + NULL, HFILL } + }, + + /* Generated from convert_proto_tree_add_text.pl */ + { &hf_nlsp_unknown_code, + { "Unknown code", "nlsp.unknown_code", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_area_address_network_number, + { "Area address network number", "nlsp.area_address.network_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_area_address_mask, + { "Area address mask", "nlsp.area_address.mask", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_neighbor, + { "Neighbor", "nlsp.neighbor", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_hello_local_mtu_mtu_size, + { "MTU Size", "nlsp.hello_local_mtu.mtu_size", + FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_hello_sending_router_system_id, + { "Sending Router System ID", "nlsp.hello.sending_router_system_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_hello_local_wan_circuit_id, + { "Local WAN Circuit ID", "nlsp.hello.local_wan_circuit_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_hello_designated_router_system_id, + { "Designated Router System ID", "nlsp.hello.designated_router_system_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_hello_designated_router_pseudonode_id, + { "Designated Router Pseudonode ID", "nlsp.hello.designated_router_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_mgt_info_network_number, + { "Network number", "nlsp.mgt_info.network_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_mgt_info_node_number, + { "Node number", "nlsp.mgt_info.node_number", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_mgt_info_ipx_version_number, + { "IPX version number", "nlsp.mgt_info.ipx_version_number", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_mgt_info_name_length, + { "Name length", "nlsp.mgt_info.name_length", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_mgt_info_name, + { "Name", "nlsp.mgt_info.name", + FT_STRING, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_link_info_router_system_id, + { "Router System ID", "nlsp.link_info.router_system_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_link_info_router_pseudonode_id, + { "Router Pseudonode ID", "nlsp.link_info.router_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_link_info_mtu_size, + { "MTU Size", "nlsp.link_info.mtu_size", + FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_link_info_delay, + { "Delay", "nlsp.link_info.delay", + FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_link_info_throughput, + { "Throughput", "nlsp.link_info.throughput", + FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_bit_sec, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_link_info_media_type, + { "Media type", "nlsp.link_info.media_type", + FT_UINT16, BASE_DEC, VALS(media_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_nlsp_svcs_info_hops_to_reach_the_service, + { "Hops to reach the service", "nlsp.svcs_info.hops_to_reach_the_service", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_svcs_info_network_number, + { "Network number", "nlsp.svcs_info.network_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_svcs_info_node_number, + { "Node number", "nlsp.svcs_info.node_number", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_svcs_info_socket, + { "Socket", "nlsp.svcs_info.socket", + FT_UINT16, BASE_DEC|BASE_EXT_STRING, &ipx_socket_vals_ext, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_svcs_info_type, + { "Type", "nlsp.svcs_info.type", + FT_UINT16, BASE_DEC|BASE_EXT_STRING, &novell_server_vals_ext, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_svcs_info_service_name, + { "Service Name", "nlsp.svcs_info.service_name", + FT_STRING, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_ext_routes_hops, + { "Hops", "nlsp.ext_routes.hops", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_ext_routes_network_number, + { "Network number", "nlsp.ext_routes.network_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_ext_routes_rip_delay, + { "RIP delay", "nlsp.ext_routes.rip_delay", + FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_tick_ticks, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_remaining_lifetime, + { "Remaining Lifetime", "nlsp.remaining_lifetime", + FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_seconds, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_lsp_id_system_id, + { "LSP ID system ID", "nlsp.lsp_id_system_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_lsp_id_pseudonode_id, + { "LSP ID pseudonode ID", "nlsp.lsp_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_lsp_id_lsp_number, + { "LSP ID LSP number", "nlsp.lsp_id_lsp_number", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_lsp_id_source_id, + { "LSP ID source ID", "nlsp.csnp.lsp_id_source_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_lsp_id_pseudonode_id, + { "LSP ID pseudonode ID", "nlsp.csnp.lsp_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_lsp_id_lsp_number, + { "LSP ID LSP number", "nlsp.csnp.lsp_id_lsp_number", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_lsp_sequence_number, + { "LSP Sequence Number", "nlsp.csnp.lsp_sequence_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_remaining_lifetime, + { "Remaining Lifetime", "nlsp.csnp.remaining_lifetime", + FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_seconds, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_lsp_checksum, + { "LSP checksum", "nlsp.csnp.lsp_checksum", + FT_UINT16, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_lsp_id_source_id, + { "LSP ID source ID", "nlsp.psnp.lsp_id_source_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_lsp_id_pseudonode_id, + { "LSP ID pseudonode ID", "nlsp.psnp.lsp_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_lsp_id_lsp_number, + { "LSP ID LSP number", "nlsp.psnp.lsp_id_lsp_number", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_lsp_sequence_number, + { "LSP Sequence Number", "nlsp.psnp.lsp_sequence_number", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_remaining_lifetime, + { "Remaining Lifetime", "nlsp.psnp.remaining_lifetime", + FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_seconds, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_lsp_checksum, + { "LSP checksum", "nlsp.psnp.lsp_checksum", + FT_UINT16, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_source_id_system_id, + { "Source ID system ID", "nlsp.csnp.source_id_system_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_source_id_pseudonode_id, + { "Source ID pseudonode ID", "nlsp.csnp.source_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_start_lsp_id_source_id, + { "Start LSP ID source ID", "nlsp.csnp.start_lsp_id_source_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_start_lsp_id_pseudonode_id, + { "Start LSP ID pseudonode ID", "nlsp.csnp.start_lsp_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_start_lsp_id_lsp_number, + { "Start LSP ID LSP number", "nlsp.csnp.start_lsp_id_lsp_number", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_end_lsp_id_source_id, + { "End LSP ID source ID", "nlsp.csnp.end_lsp_id_source_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_end_lsp_id_pseudonode_id, + { "End LSP ID pseudonode ID", "nlsp.csnp.end_lsp_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_csnp_end_lsp_id_lsp_number, + { "End LSP ID LSP number", "nlsp.csnp.end_lsp_id_lsp_number", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_source_id_system_id, + { "Source ID system ID", "nlsp.psnp.source_id_system_id", + FT_ETHER, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_nlsp_psnp_source_id_pseudonode_id, + { "Source ID pseudonode ID", "nlsp.psnp.source_id_pseudonode_id", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + }; + static gint *ett[] = { + &ett_nlsp, + &ett_nlsp_hello_clv_area_addr, + &ett_nlsp_hello_clv_neighbors, + &ett_nlsp_hello_local_mtu, + &ett_nlsp_hello_clv_unknown, + &ett_nlsp_lsp_info, + &ett_nlsp_lsp_clv_area_addr, + &ett_nlsp_lsp_clv_mgt_info, + &ett_nlsp_lsp_clv_link_info, + &ett_nlsp_lsp_clv_svcs_info, + &ett_nlsp_lsp_clv_ext_routes, + &ett_nlsp_lsp_clv_unknown, + &ett_nlsp_csnp_lsp_entries, + &ett_nlsp_csnp_lsp_entry, + &ett_nlsp_csnp_clv_unknown, + &ett_nlsp_psnp_lsp_entries, + &ett_nlsp_psnp_lsp_entry, + &ett_nlsp_psnp_clv_unknown, + }; + + static ei_register_info ei[] = { + { &ei_nlsp_short_packet, { "nlsp.short_packet", PI_MALFORMED, PI_ERROR, "Short packet", EXPFILL }}, + { &ei_nlsp_long_packet, { "nlsp.long_packet", PI_MALFORMED, PI_ERROR, "Long packet", EXPFILL }}, + { &ei_nlsp_major_version, { "nlsp.major_version.unknown", PI_PROTOCOL, PI_WARN, "Unknown NLSP version", EXPFILL }}, + { &ei_nlsp_type, { "nlsp.type.unknown", PI_PROTOCOL, PI_WARN, "Unknown NLSP packet type", EXPFILL }}, + }; + + expert_module_t* expert_nlsp; + + proto_nlsp = proto_register_protocol("NetWare Link Services Protocol", + "NLSP", "nlsp"); + proto_register_field_array(proto_nlsp, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + expert_nlsp = expert_register_protocol(proto_nlsp); + expert_register_field_array(expert_nlsp, ei, array_length(ei)); + + nlsp_handle = register_dissector("nlsp", dissect_nlsp, proto_nlsp); +} + +void +proto_reg_handoff_nlsp(void) +{ + dissector_add_uint("ipx.socket", IPX_SOCKET_NLSP, nlsp_handle); +} + +/* + * 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: + */ |