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/*
* Copyright (c) 2017-2024 OARC, Inc.
* Copyright (c) 2011-2017, IIS - The Internet Foundation in Sweden
* All rights reserved.
*
* This file is part of PacketQ.
*
* PacketQ 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 3 of the License, or
* (at your option) any later version.
*
* PacketQ 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 PacketQ. If not, see <http://www.gnu.org/licenses/>.
*/
#include "icmp.h"
#include "output.h"
#include "packet_handler.h"
#include "packetq.h"
#include "tcp.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
namespace packetq {
Parse_icmp::Parse_icmp()
{
table_name = "icmp";
add_packet_columns();
add_lookup_tables();
}
void Parse_icmp::add_packet_columns()
{
m_ip_helper.add_packet_columns(*this);
add_packet_column("type", "", Coltype::_int, COLUMN_TYPE);
add_packet_column("code", "", Coltype::_int, COLUMN_CODE);
add_packet_column("echo_identifier", "", Coltype::_int, COLUMN_ECHO_IDENTIFIER);
add_packet_column("echo_sequence", "", Coltype::_int, COLUMN_ECHO_SEQUENCE);
add_packet_column("du_protocol", "", Coltype::_int, COLUMN_DU_PROTOCOL);
add_packet_column("du_src_addr", "", Coltype::_text, COLUMN_DU_SRC_ADDR);
add_packet_column("du_dst_addr", "", Coltype::_text, COLUMN_DU_DST_ADDR);
add_packet_column("desc", "", Coltype::_text, COLUMN_DESC);
}
void Parse_icmp::add_lookup_tables()
{
}
Packet::ParseResult Parse_icmp::parse(Packet& packet, const std::vector<int>& columns, Row& destination_row, bool sample)
{
if (packet.m_ip_header.proto != IPPROTO_ICMP)
return Packet::ERROR;
if (packet.m_ip_header.ethertype != 2048) // we dont support ICMPv6 yet
return Packet::ERROR;
if (!sample)
return Packet::NOT_SAMPLED;
if (packet.m_len < 2)
return Packet::ERROR;
Row* r = &destination_row;
m_ip_helper.assign(r, &packet.m_ip_header, columns);
unsigned char* raw = packet.m_data;
int type = raw[0];
int code = raw[1];
int identifier = 0, sequence = 0, protocol = 0;
RefCountString *src_addr = 0, *dst_addr = 0;
bool src_addr_used = false, dst_addr_used = false;
switch (type) {
case 0:
if (packet.m_len < 8)
return Packet::ERROR;
identifier = get_short(&raw[4]);
sequence = get_short(&raw[6]);
break;
case 3: {
IP_header head;
if (packet.m_len < 8 + 20)
return Packet::ERROR;
head.decode(&raw[8], packet.m_ip_header.ethertype, 0);
protocol = head.proto;
src_addr = v4_addr2str(head.src_ip);
dst_addr = v4_addr2str(head.dst_ip);
} break;
case 8:
if (packet.m_len < 8)
return Packet::ERROR;
identifier = get_short(&raw[4]);
sequence = get_short(&raw[6]);
break;
}
for (auto i = columns.begin(), end = columns.end(); i != end; ++i) {
switch (*i) {
case COLUMN_TYPE:
acc_type.value(r) = type;
break;
case COLUMN_CODE:
acc_code.value(r) = code;
break;
case COLUMN_ECHO_IDENTIFIER:
acc_echo_identifier.value(r) = identifier;
break;
case COLUMN_ECHO_SEQUENCE:
acc_echo_sequence.value(r) = sequence;
break;
case COLUMN_DU_PROTOCOL:
acc_du_protocol.value(r) = protocol;
break;
case COLUMN_DU_SRC_ADDR:
acc_du_src_addr.value(r) = src_addr ? src_addr : RefCountString::construct("");
src_addr_used = true;
break;
case COLUMN_DU_DST_ADDR:
acc_du_dst_addr.value(r) = dst_addr ? dst_addr : RefCountString::construct("");
dst_addr_used = true;
break;
case COLUMN_DESC:
switch (type) {
case 0:
acc_desc.value(r) = RefCountString::construct("Echo Reply");
break;
case 3:
switch (code) {
case 0:
acc_desc.value(r) = RefCountString::construct("Destination network unreachable");
break;
case 1:
acc_desc.value(r) = RefCountString::construct("Destination host unreachable");
break;
case 2:
acc_desc.value(r) = RefCountString::construct("Destination protocol unreachable");
break;
case 3:
acc_desc.value(r) = RefCountString::construct("Destination port unreachable");
break;
default:
acc_desc.value(r) = RefCountString::construct("Destination unreachable");
break;
}
break;
case 4:
acc_desc.value(r) = RefCountString::construct("Source quench");
break;
case 5:
acc_desc.value(r) = RefCountString::construct("Redirect Message");
break;
case 6:
acc_desc.value(r) = RefCountString::construct("Alternate Host Address");
break;
case 8:
acc_desc.value(r) = RefCountString::construct("Echo Request");
break;
case 9:
acc_desc.value(r) = RefCountString::construct("Router Advertisement");
break;
case 10:
acc_desc.value(r) = RefCountString::construct("Router Solicitation");
break;
case 11:
acc_desc.value(r) = RefCountString::construct("Time Exceeded");
break;
case 12:
acc_desc.value(r) = RefCountString::construct("Bad IP header");
break;
case 13:
acc_desc.value(r) = RefCountString::construct("Timestamp");
break;
case 14:
acc_desc.value(r) = RefCountString::construct("Timestamp Reply");
break;
case 15:
acc_desc.value(r) = RefCountString::construct("Information Request");
break;
case 16:
acc_desc.value(r) = RefCountString::construct("Information Reply");
break;
case 17:
acc_desc.value(r) = RefCountString::construct("Address Mask Request");
break;
case 18:
acc_desc.value(r) = RefCountString::construct("Address Mask Reply");
break;
case 30:
acc_desc.value(r) = RefCountString::construct("Traceroute");
break;
default:
acc_desc.value(r) = RefCountString::construct("UNKNOWN TYPE");
}
break;
}
}
if (src_addr && !src_addr_used)
src_addr->dec_refcount();
if (dst_addr && !dst_addr_used)
dst_addr->dec_refcount();
return Packet::OK;
}
void Parse_icmp::on_table_created(Table* table, const std::vector<int>& columns)
{
m_ip_helper.on_table_created(table, columns);
acc_type = table->get_accessor<int_column>("type");
acc_code = table->get_accessor<int_column>("code");
acc_echo_identifier = table->get_accessor<int_column>("echo_identifier");
acc_echo_sequence = table->get_accessor<int_column>("echo_sequence");
acc_du_protocol = table->get_accessor<int_column>("du_protocol");
acc_du_src_addr = table->get_accessor<text_column>("du_src_addr");
acc_du_dst_addr = table->get_accessor<text_column>("du_dst_addr");
acc_desc = table->get_accessor<text_column>("desc");
}
} // namespace packetq
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