wireshark/epan/dissectors/packet-bootparams.c

/* packet-bootparams.c
 * Routines for bootparams dissection
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * Copied from packet-smb.c
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include "config.h"


#include "packet-rpc.h"

#define BOOTPARAMSPROC_NULL 0
#define BOOTPARAMSPROC_WHOAMI 1
#define BOOTPARAMSPROC_GETFILE 2

#define BOOTPARAMS_PROGRAM 100026

void proto_register_bootparams(void);
void proto_reg_handoff_bootparams(void);

static int proto_bootparams = -1;
static int hf_bootparams_procedure_v1 = -1;
static int hf_bootparams_host = -1;
static int hf_bootparams_domain = -1;
static int hf_bootparams_fileid = -1;
static int hf_bootparams_filepath = -1;
static int hf_bootparams_hostaddr = -1;
static int hf_bootparams_routeraddr = -1;
static int hf_bootparams_addresstype = -1;

static gint ett_bootparams = -1;


static const value_string addr_type[] =
{
	{ 	1,	"IPv4-ADDR"	},
	{	0,	NULL		}
};

static int
dissect_bp_address(tvbuff_t *tvb, int offset, proto_tree *tree, int hfindex)
{
	guint32 type;
	guint32 ipaddr;


	type = tvb_get_ntohl(tvb, offset);

	offset = dissect_rpc_uint32(tvb, tree, hf_bootparams_addresstype, offset);

	switch(type){
	case 1:
		ipaddr = ((tvb_get_guint8(tvb, offset+3 )&0xff)<<24)
			|((tvb_get_guint8(tvb, offset+7 )&0xff)<<16)
			|((tvb_get_guint8(tvb, offset+11)&0xff)<<8 )
			|((tvb_get_guint8(tvb, offset+15)&0xff) );
		proto_tree_add_ipv4(tree, hfindex, tvb,
			offset, 16, g_ntohl(ipaddr));
		offset += 16;
		break;

	default:
		break;
	}

	return offset;
}


static int
dissect_getfile_call(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
{
	int offset = 0;

	offset = dissect_rpc_string(tvb, tree, hf_bootparams_host, offset, NULL);
	offset = dissect_rpc_string(tvb, tree, hf_bootparams_fileid, offset, NULL);

	return offset;
}

static int
dissect_getfile_reply(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
{
	int offset = 0;

	offset = dissect_rpc_string(tvb, tree, hf_bootparams_host, offset, NULL);
	offset = dissect_bp_address(tvb, offset, tree, hf_bootparams_hostaddr);
	offset = dissect_rpc_string(tvb, tree, hf_bootparams_filepath, offset, NULL);

	return offset;
}

static int
dissect_whoami_call(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
{
	int offset = dissect_bp_address(tvb, 0, tree, hf_bootparams_hostaddr);

	return offset;
}

static int
dissect_whoami_reply(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
{
	int offset = 0;

    offset = dissect_rpc_string(tvb, tree, hf_bootparams_host, offset, NULL);
	offset = dissect_rpc_string(tvb, tree, hf_bootparams_domain, offset, NULL);
	offset = dissect_bp_address(tvb, offset, tree, hf_bootparams_routeraddr);

	return offset;
}

/* proc number, "proc name", dissect_request, dissect_reply */
static const vsff bootparams1_proc[] = {
	{ BOOTPARAMSPROC_NULL, "NULL",
		dissect_rpc_void, dissect_rpc_void },
	{ BOOTPARAMSPROC_WHOAMI, "WHOAMI",
		dissect_whoami_call, dissect_whoami_reply },
	{ BOOTPARAMSPROC_GETFILE, "GETFILE",
		dissect_getfile_call, dissect_getfile_reply },
	{ 0, NULL, NULL, NULL }
};

static const value_string bootparams1_proc_vals[] = {
	{ BOOTPARAMSPROC_NULL, "NULL" },
	{ BOOTPARAMSPROC_WHOAMI, "WHOAMI" },
	{ BOOTPARAMSPROC_GETFILE, "GETFILE" },
	{ 0, NULL }
};
/* end of Bootparams version 1 */

static const rpc_prog_vers_info bootparams_vers_info[] = {
	{ 1, bootparams1_proc, &hf_bootparams_procedure_v1 },
};

void
proto_register_bootparams(void)
{
	static hf_register_info hf[] = {
		{ &hf_bootparams_procedure_v1, {
			"V1 Procedure", "bootparams.procedure_v1", FT_UINT32, BASE_DEC,
			VALS(bootparams1_proc_vals), 0, NULL, HFILL }},
		{ &hf_bootparams_host, {
			"Client Host", "bootparams.host", FT_STRING, BASE_NONE,
			NULL, 0, NULL, HFILL }},
		{ &hf_bootparams_domain, {
			"Client Domain", "bootparams.domain", FT_STRING, BASE_NONE,
			NULL, 0, NULL, HFILL }},
		{ &hf_bootparams_fileid, {
			"File ID", "bootparams.fileid", FT_STRING, BASE_NONE,
			NULL, 0, NULL, HFILL }},
		{ &hf_bootparams_filepath, {
			"File Path", "bootparams.filepath", FT_STRING, BASE_NONE,
			NULL, 0, NULL, HFILL }},
		{ &hf_bootparams_hostaddr, {
			"Client Address", "bootparams.hostaddr", FT_IPv4, BASE_NONE,
			NULL, 0, "Address", HFILL }},
		{ &hf_bootparams_routeraddr, {
			"Router Address", "bootparams.routeraddr", FT_IPv4, BASE_NONE,
			NULL, 0, NULL, HFILL }},
		{ &hf_bootparams_addresstype, {
			"Address Type", "bootparams.type", FT_UINT32, BASE_DEC,
			VALS(addr_type), 0, NULL, HFILL }},
	};
	static gint *ett[] = {
		&ett_bootparams,
	};

	proto_bootparams = proto_register_protocol("Boot Parameters",
	    "BOOTPARAMS", "bootparams");
	proto_register_field_array(proto_bootparams, hf, array_length(hf));
	proto_register_subtree_array(ett, array_length(ett));
}

void
proto_reg_handoff_bootparams(void)
{
	/* Register the protocol as RPC */
	rpc_init_prog(proto_bootparams, BOOTPARAMS_PROGRAM, ett_bootparams,
	    G_N_ELEMENTS(bootparams_vers_info), bootparams_vers_info);
}

/*
 * 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:
 */