openvpn::Gremlin::SendRecvQueue Class Reference

#include <gremlin.hpp>

Collaboration diagram for openvpn::Gremlin::SendRecvQueue:

Public Member Functions
	SendRecvQueue (openvpn_io::io_context &io_context, const Config::Ptr &conf_arg, const bool tcp_arg)
template<class F >
void	send_queue (F &&func_arg)
template<class F >
void	recv_queue (F &&func_arg)
void	maybe_corrupt_data (Buffer &buf, const size_t opcode_offset)
	Maybe flip one bit in an outgoing data-channel packet so the peer's AEAD/HMAC authentication fails.
size_t	send_size () const
size_t	recv_size () const
void	stop ()

Private Member Functions
bool	flip (const unsigned int prob)

Private Attributes
Config::Ptr	conf
MTRand	ri
DelayedQueue::Ptr	send
DelayedQueue::Ptr	recv
bool	tcp

Detailed Description

Definition at line 158 of file gremlin.hpp.

Constructor & Destructor Documentation

SendRecvQueue()

openvpn::Gremlin::SendRecvQueue::SendRecvQueue ( openvpn_io::io_context &  io_context, const Config::Ptr &  conf_arg, const bool  tcp_arg  )

inline

Definition at line 161 of file gremlin.hpp.

Member Function Documentation

flip()

bool openvpn::Gremlin::SendRecvQueue::flip ( const unsigned int  prob )

inlineprivate

Definition at line 232 of file gremlin.hpp.

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maybe_corrupt_data()

void openvpn::Gremlin::SendRecvQueue::maybe_corrupt_data ( Buffer &  buf, const size_t  opcode_offset  )

inline

Maybe flip one bit in an outgoing data-channel packet so the peer's AEAD/HMAC authentication fails.

Non-data packets are left alone so the TLS handshake can complete. Corruption fires with 1-in-N probability where N is the send_corrupt_probability configured on the gremlin Config; if that value is 0, the function is a no-op.

Parameters

buf	Buffer to mutate in place.
opcode_offset	Byte index of the OpenVPN opcode in buf (0 for UDP, 2 for TCP because of the 2-byte length prefix prepended by PacketStream).

Definition at line 199 of file gremlin.hpp.

recv_queue()

template<class F >

void openvpn::Gremlin::SendRecvQueue::recv_queue ( F &&  func_arg )

inline

Definition at line 179 of file gremlin.hpp.

recv_size()

size_t openvpn::Gremlin::SendRecvQueue::recv_size ( ) const

inline

Definition at line 220 of file gremlin.hpp.

send_queue()

template<class F >

void openvpn::Gremlin::SendRecvQueue::send_queue ( F &&  func_arg )

inline

Definition at line 172 of file gremlin.hpp.

send_size()

size_t openvpn::Gremlin::SendRecvQueue::send_size ( ) const

inline

Definition at line 215 of file gremlin.hpp.

stop()

void openvpn::Gremlin::SendRecvQueue::stop ( )

inline

Definition at line 225 of file gremlin.hpp.

Member Data Documentation

conf

Config::Ptr openvpn::Gremlin::SendRecvQueue::conf

private

Definition at line 240 of file gremlin.hpp.

recv

DelayedQueue::Ptr openvpn::Gremlin::SendRecvQueue::recv

private

Definition at line 243 of file gremlin.hpp.

ri

MTRand openvpn::Gremlin::SendRecvQueue::ri

private

Definition at line 241 of file gremlin.hpp.

send

DelayedQueue::Ptr openvpn::Gremlin::SendRecvQueue::send

private

Definition at line 242 of file gremlin.hpp.

tcp

bool openvpn::Gremlin::SendRecvQueue::tcp

private

Definition at line 244 of file gremlin.hpp.

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

• openvpn/transport/gremlin.hpp