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Kernel: Dont try to register ephemeral TCP ports twice

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stelar7 2021-06-01 01:11:14 +02:00 • committed by Ali Mohammad Pur
parent 70a575d75f
commit 01e5af487f
4 changed files with 28 additions and 19 deletions
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17
Kernel/Net/TCPSocket.cpp
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@ -365,12 +365,15 @@ KResult TCPSocket::protocol_bind()
return KSuccess;
}
KResult TCPSocket::protocol_listen()
KResult TCPSocket::protocol_listen(bool did_allocate_port)
{
Locker locker(sockets_by_tuple().lock());
if (sockets_by_tuple().resource().contains(tuple()))
return EADDRINUSE;
sockets_by_tuple().resource().set(tuple(), this);
if (!did_allocate_port) {
Locker socket_locker(sockets_by_tuple().lock());
if (sockets_by_tuple().resource().contains(tuple()))
return EADDRINUSE;
sockets_by_tuple().resource().set(tuple(), this);
}
set_direction(Direction::Passive);
set_state(State::Listen);
set_setup_state(SetupState::Completed);
@ -387,8 +390,8 @@ KResult TCPSocket::protocol_connect(FileDescription& description, ShouldBlock sh
if (!has_specific_local_address())
set_local_address(routing_decision.adapter->ipv4_address());
if (auto result = allocate_local_port_if_needed(); result.is_error())
return result.error();
if (auto result = allocate_local_port_if_needed(); result.error_or_port.is_error())
return result.error_or_port.error();
m_sequence_number = get_good_random<u32>();
m_ack_number = 0;