Class used to setup the entire Myra Canyon server framework. More...

#include "Server.hpp"

Collaboration diagram for Myra::Server:

Public Member Functions
	Server (void)
	Constructor. More...

	~Server (void)
	Destructor. More...

int	run (void)
	Start the Myra server. More...

void	setup_signal_handling (void)
	Setup some signal handlers. More...

void	raise_tap_interface (void)
	Raise the TAP network interface through which the Myra server receives packets to be inspected. More...

void	async_read_from_tap_interface (Pkt &pkt)
	Read (asynchronously) from the TAP network interface. More...

void	setup_nfq (void)
	Open and/or initialize what we need to use netfilter queues. More...

void	release_nfq (void)
	Close or shutdown our access to netfilter queues. More...

uint32_t	get_verdict_for_queue_packet (const uint32_t id, const uint8_t *payload_data, const std::size_t payload_len)

void	async_process_netfilterqueue_packet (Pkt &pkt)

void	start_flow_rollup_timer (void)

void	flow_rollup_thread (void)

void	start_inside_host_timer (void)

void	inside_host_thread (void)

void	recover_previous_flows (Myra::DB &db)


void	async_write_to_tap_interface (Pkt &pkt)
	Write (asynchronously) to the TAP network interface. More...

void	async_write_to_tap_interface (void)

Static Public Member Functions
static Server &	get (void)
	Get the server instance. More...

Public Attributes
const TP	start_time
	The time when the server started running. More...

Config	config
	Configuration for the Myra Canyon server. More...

FD	tap_fd
	File descriptor for TAP interface. More...

std::string	tap_name
	Name assigned to TAP interface. More...

std::atomic< bool >	done
	Determine whether the server is finished running. More...

EC	ec
	boost system error code More...

ASIO_IO_SERVICE	io_service
	boost::asio's link to the operating system's I/O services. More...

ASIO_SIGNAL_SET	signal_set
	boost::asio's signal handling More...

ASIO_STREAM	tap_stream
	boost::asio's POSIX stream to read from and write to the TAP interface. More...

ASIO_TIMER	flow_timer
	boost::asio's timer for flow rollup More...

ASIO_TIMER	inside_timer
	boost::asio's timer for inside host information More...

Packet_Queue	outgoing_packet_queue
	A queue to hold outgoing (processed) packets. More...

std::recursive_mutex	outgoing_packet_queue_mutex
	Access to the outgoing packet queue must be synchronized between threads. More...

FlowMap	flow_map
	Map of predicted/expected flows and the corresponding "parent" flow. More...

FlowExpectation	flow_expectation


struct nfq_handle *	netfilterqueue_handle
	Netfilter Queue. More...

struct nfq_q_handle *	netfilterqueue_queue
	Netfilter Queue. More...

FD	netfilterqueue_fd
	Netfilter Queue. More...

ASIO_STREAM	netfilterqueue_stream
	Netfilter Queue. More...

Detailed Description

Class used to setup the entire Myra Canyon server framework.

This eventually will open the tap/tun interface, ensure packets are inspected, and decides if a packet should be manipulated.

Constructor & Destructor Documentation

Myra::Server::Server ( void )

Constructor.

Myra::Server::~Server ( void )

Destructor.

Member Function Documentation

void Myra::Server::async_process_netfilterqueue_packet ( Pkt & pkt )

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void Myra::Server::async_read_from_tap_interface ( Myra::Pkt & pkt )

Read (asynchronously) from the TAP network interface.

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void Myra::Server::async_write_to_tap_interface ( Myra::Pkt & pkt )

Write (asynchronously) to the TAP network interface.

This method actually just queues up the packet to be written. Once it is queued, the other method async_write_to_tap_interface(void) is called to perform the asynchronous write if there are no previous packets pending to be written. Note that only 1 packet can be written at a time using the asynchronous interface.

void Myra::Server::async_write_to_tap_interface ( void )

Todo:: REMOVE THIS TEMP CODE!

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void Myra::Server::flow_rollup_thread ( void )

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Myra::Server & Myra::Server::get ( void )

static

Get the server instance.

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uint32_t Myra::Server::get_verdict_for_queue_packet	(	const uint32_t	id,
		const uint8_t *	payload_data,
		const std::size_t	payload_len
	)

currently unused method

void Myra::Server::inside_host_thread ( void )

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void Myra::Server::raise_tap_interface ( void )

Raise the TAP network interface through which the Myra server receives packets to be inspected.

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void Myra::Server::recover_previous_flows ( Myra::DB & db )

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void Myra::Server::release_nfq ( void )

Close or shutdown our access to netfilter queues.

int Myra::Server::run ( void )

Start the Myra server.

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void Myra::Server::setup_nfq ( void )

Open and/or initialize what we need to use netfilter queues.

Todo:: IPv6 is not yet tested. Likely broken in many places. Leave it disabled until it is time.

Todo:: ARP wont work. Iptables is just for IPv4 and IPv6. Instead, use ebtables for ARP. Though it looks like ebtables doesn't yet support the NFQUEUE jump target, so not much we can do.

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void Myra::Server::setup_signal_handling ( void )

Setup some signal handlers.

Todo:: define our own error category derived from error_category

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void Myra::Server::start_flow_rollup_timer ( void )

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void Myra::Server::start_inside_host_timer ( void )

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Member Data Documentation

Config Myra::Server::config

Configuration for the Myra Canyon server.

std::atomic<bool> Myra::Server::done

Determine whether the server is finished running.

EC Myra::Server::ec

boost system error code

FlowExpectation Myra::Server::flow_expectation

FlowMap Myra::Server::flow_map

Map of predicted/expected flows and the corresponding "parent" flow.

ASIO_TIMER Myra::Server::flow_timer

boost::asio's timer for flow rollup

ASIO_TIMER Myra::Server::inside_timer

boost::asio's timer for inside host information

ASIO_IO_SERVICE Myra::Server::io_service

boost::asio's link to the operating system's I/O services.

FD Myra::Server::netfilterqueue_fd

Netfilter Queue.

struct nfq_handle* Myra::Server::netfilterqueue_handle

Netfilter Queue.

struct nfq_q_handle* Myra::Server::netfilterqueue_queue

Netfilter Queue.

ASIO_STREAM Myra::Server::netfilterqueue_stream

Netfilter Queue.

Packet_Queue Myra::Server::outgoing_packet_queue

A queue to hold outgoing (processed) packets.

std::recursive_mutex Myra::Server::outgoing_packet_queue_mutex

Access to the outgoing packet queue must be synchronized between threads.

Map of all the flows Myra knows about.

ASIO_SIGNAL_SET Myra::Server::signal_set

boost::asio's signal handling

const TP Myra::Server::start_time

The time when the server started running.

FD Myra::Server::tap_fd

File descriptor for TAP interface.

std::string Myra::Server::tap_name

Name assigned to TAP interface.

ASIO_STREAM Myra::Server::tap_stream

boost::asio's POSIX stream to read from and write to the TAP interface.

The documentation for this class was generated from the following files:

Myra/src-myra/Server.hpp
Myra/src-myra/FlowRollup.cpp
Myra/src-myra/InsideHost.cpp
Myra/src-myra/NFQueue.cpp
Myra/src-myra/Server.cpp
Myra/src-myra/TapInterface.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation