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/****************************************************************************
** File: sip.c
**
** Author: Mike Borella
**
** Comments: Dump SLP header. More parsing later
**
** $Id: slp.c,v 1.5 2002/01/03 00:04:01 mborella Exp $
**
** 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 Library 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.
**
*****************************************************************************/
#include "global.h"
#include "slp.h"
#define HOLDER_SIZE 64
strmap_t slp_msgtype_map[] =
{
{ SLP_MSGTYPE_SRVRQST, "service request" },
{ SLP_MSGTYPE_SRVRPLY, "service reply" },
{ SLP_MSGTYPE_SRVREG, "service registration" },
{ SLP_MSGTYPE_SRVDEREG, "service deregistration" },
{ SLP_MSGTYPE_SRVACK, "service acknowledge" },
{ SLP_MSGTYPE_ATTRRQST, "attribute request" },
{ SLP_MSGTYPE_ATTRRPLY, "attribute reply" },
{ SLP_MSGTYPE_DAADVERT, "DA advertisement" },
{ SLP_MSGTYPE_SRVTYPERQST, "service type request" },
{ SLP_MSGTYPE_SRVTYPERPLY, "service type reply" },
{ SLP_MSGTYPE_SAADVERT, "SA advertisement" },
{ 0, "" }
};
extern struct arg_t *my_args;
/*----------------------------------------------------------------------------
**
** dump_slp()
**
** Parse SLP packet and dump fields.
**
**----------------------------------------------------------------------------
*/
void dump_slp(packet_t *pkt)
{
slpv1_header_t slpv1;
slpv2_header_t slpv2;
char holder[HOLDER_SIZE];
u_int8_t ver;
/* Set the layer */
set_layer(LAYER_APPLICATION);
/*
* Look at the first byte to determine the version
*/
if (look_packet_bytes((u_int8_t *) &ver, pkt, 1) == 0)
return;
switch(ver)
{
case 1:
/* Get the header */
if (get_packet_bytes((u_int8_t *) &slpv1, pkt, 12) == 0)
return;
/* Conversions */
slpv1.length = ntohs(slpv1.length);
slpv1.char_encoding = ntohs(slpv1.char_encoding);
slpv1.xid = ntohs(slpv1.xid);
if (my_args->m)
{
/* In minimal mode lets just dump the version and operation */
display_minimal_string("| SLPv1 ");
display_minimal_string(map2str(slp_msgtype_map, slpv1.function_id));
display_minimal_string(" ");
}
else
{
/* announcement */
display_header_banner("SLPv1 Header");
/* dump the version and operation */
display("Version", (u_int8_t *) &slpv1.version, 1, DISP_DEC);
snprintf(holder, HOLDER_SIZE, "%d (%s)", slpv1.function_id,
map2str(slp_msgtype_map, slpv1.function_id));
display_string("Operation", holder);
display("Length", (u_int8_t *) &slpv1.length, 2, DISP_DEC);
display("Flags/Reserved", (u_int8_t *) &slpv1.flags_rsrvd, 1,
DISP_HEX);
display("Dialect", (u_int8_t *) &slpv1.dialect, 1, DISP_DEC);
display("Language code", (u_int8_t *) &slpv1.lang_code, 2,
DISP_STRING);
display("Character encoding", (u_int8_t *) &slpv1.char_encoding,
2, DISP_DEC);
display("XID", (u_int8_t *) &slpv1.xid, 2, DISP_DEC);
}
break;
case 2:
/* Get the header */
if (get_packet_bytes((u_int8_t *) &slpv2, pkt, 14) == 0)
return;
/* Conversions */
reverse_byte_order((u_int8_t *) &slpv2.length, 3);
slpv2.flags_rsrvd = ntohs(slpv2.flags_rsrvd);
reverse_byte_order((u_int8_t *) &slpv2.next_ext_offset, 3);
slpv2.xid = ntohs(slpv2.xid);
slpv2.lang_tag_length = ntohs(slpv2.lang_tag_length);
if (my_args->m)
{
/* In minimal mode lets just dump the version and operation */
display_minimal_string("| SLPv2 ");
display_minimal_string(map2str(slp_msgtype_map, slpv2.function_id));
display_minimal_string(" ");
}
else
{
/* announcement */
display_header_banner("SLPv2 Header");
/* dump the version and operation */
display("Version", (u_int8_t *) &slpv2.version, 1, DISP_DEC);
snprintf(holder, HOLDER_SIZE, "%d (%s)", slpv1.function_id,
map2str(slp_msgtype_map, slpv1.function_id));
display_string("Operation", holder);
display("Length", (u_int8_t *) &slpv2.length, 3, DISP_DEC);
display("Flags/Reserved", (u_int8_t *) &slpv2.flags_rsrvd, 2,
DISP_HEX);
display("Next extension offset",
(u_int8_t *) &slpv2.next_ext_offset, 3, DISP_DEC);
display("XID", (u_int8_t *) &slpv2.xid, 2, DISP_DEC);
display("Language tag length", (u_int8_t *) &slpv2.lang_tag_length,
2, DISP_DEC);
}
default:
break;
}
}
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