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# -*- coding: binary -*-
require 'spec_helper'
require 'packetfu/protos/eth'
require 'packetfu/protos/ipv6'
require 'packetfu/protos/icmpv6'
require 'packetfu/pcap'
require 'tempfile'
include PacketFu
describe ICMPv6Packet, "when read from a pcap file" do
before(:all) do
parsed_packets = PcapFile.read_packets(File.join(File.dirname(__FILE__),
"ipv6_icmp.pcap"))
@icmpv6_packet = parsed_packets.first
end
it 'should be recognized as an icmp packet' do
expect(@icmpv6_packet.is_icmpv6?).to be(true)
end
it "should report the right seq number" do
expect(@icmpv6_packet.payload[2..3].unpack("H*")[0]).to eq("0001")
end
it "should be recognized as an icmp reply packet" do
expect(@icmpv6_packet.icmpv6_type).to eq(128)
end
it "should have the right checksum" do
expect(@icmpv6_packet.icmpv6_sum.to_s(16)).to eq(@icmpv6_packet.icmpv6_calc_sum.to_s(16))
end
context "when initializing ICMPv6Header from scratch" do
before :each do
@icmpv6_header = ICMPv6Header.new
end
it "should have the right instance variables" do
expect(@icmpv6_header.to_s).to eql("\x00\x00\x00\x00")
expect(@icmpv6_header.icmpv6_type).to eql(0)
end
it "should allow setting of the type" do
@icmpv6_header.icmpv6_type = 1
expect(@icmpv6_header.icmpv6_type).to eql(1)
end
end
context "when initializing ICMPv6Packet from scratch" do
before :each do
@icmpv6_packet = ICMPv6Packet.new
end
it "should support peak functionality" do
@icmpv6_packet.ipv6_saddr = "::1:1020:3040"
@icmpv6_packet.ipv6_daddr = "::1:5060:7080"
@icmpv6_packet.icmpv6_type = 129
@icmpv6_packet.payload = "abcdefghijklmnopqrstuvwxyz"
@icmpv6_packet.recalc
expect(@icmpv6_packet.peek).to match(/6C 84\s+::1:1020:3040:pong\s+->\s+::1:5060:7080/)
end
end
context "when reading/writing ICMPv6Packet to disk" do
before :each do
@icmpv6_packet = ICMPv6Packet.new
@temp_file = Tempfile.new('icmpv6_pcap')
end
after(:each) { @temp_file.close; @temp_file.unlink }
it "should write a PCAP file to disk" do
@icmpv6_packet.ipv6_saddr = "::1:1020:3040"
@icmpv6_packet.ipv6_daddr = "::1:5060:7080"
@icmpv6_packet.payload = "abcdefghijklmnopqrstuvwxyz"
@icmpv6_packet.recalc
expect(@temp_file.read).to eql("")
@icmpv6_packet.to_f(@temp_file.path, 'a')
expect(File.exist?(@temp_file.path))
expect(@temp_file.read.size).to be >= 79
end
it "should read a PCAP file from disk" do
sample_packet = PcapFile.new.file_to_array(:f => './spec/ipv6_icmp.pcap').first
pkt = Packet.parse(sample_packet)
expect(pkt.is_icmpv6?).to be true
expect(pkt.class).to eql(PacketFu::ICMPv6Packet)
expect(pkt.icmpv6_sum.to_i).to eql(0x24a5)
expect(pkt.icmpv6_type.to_i).to eql(128)
end
end
end
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