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|
defmodule Chessh.SSH.Tui do
require Logger
@behaviour :ssh_server_channel
def init(opts) do
Logger.debug("#{inspect(opts)}")
{:ok,
%{
channel: nil,
cm: nil,
pty: %{term: nil, width: nil, height: nil, pixwidth: nil, pixheight: nil, modes: nil},
shell: false,
client_pid: nil
}}
end
@spec handle_msg(any, any) ::
:ok
| {:ok, atom | %{:channel => any, :cm => any, optional(any) => any}}
| {:stop, any, %{:channel => any, :client_pid => any, optional(any) => any}}
def handle_msg({:ssh_channel_up, channel_id, connection_handler}, state) do
Logger.debug(
"SSH CHANNEL UP #{inspect(connection_handler)} #{inspect(:ssh.connection_info(connection_handler))}"
)
{:ok, %{state | channel: channel_id, cm: connection_handler}}
end
def handle_msg({:EXIT, client_pid, _reason}, %{client_pid: client_pid} = state) do
{:stop, state.channel, state}
end
### commands we expect from the client ###
def handle_msg({:send_data, data}, state) do
Logger.debug("DATA SENT #{inspect(data)}")
:ssh_connection.send(state.cm, state.channel, data)
{:ok, state}
end
### catch all for what we haven't seen ###
def handle_msg(msg, term) do
Logger.debug("Unknown msg #{inspect(msg)}, #{inspect(term)}")
end
def handle_ssh_msg(
{:ssh_cm, _connection_handler, {:data, _channel_id, _type, data}},
state
) do
Logger.debug("DATA #{inspect(data)}")
send(state.client_pid, {:data, data})
{:ok, state}
end
def handle_ssh_msg(
{:ssh_cm, connection_handler,
{:pty, channel_id, want_reply?, {term, width, height, pixwidth, pixheight, modes} = _pty}},
state
) do
:ssh_connection.reply_request(connection_handler, want_reply?, :success, channel_id)
{:ok,
%{
state
| pty: %{
term: term,
width: width,
height: height,
pixwidth: pixwidth,
pixheight: pixheight,
modes: modes
}
}}
end
def handle_ssh_msg(
{:ssh_cm, connection_handler, {:env, channel_id, want_reply?, var, value}},
state
) do
:ssh_connection.reply_request(connection_handler, want_reply?, :failure, channel_id)
Logger.debug("ENV #{var} = #{value}")
{:ok, state}
end
def handle_ssh_msg(
{:ssh_cm, _connection_handler,
{:window_change, _channel_id, width, height, pixwidth, pixheight}},
state
) do
Logger.debug("WINDOW CHANGE")
# SSHnakes.Client.resize(state.client_pid, width, height)
{:ok,
%{
state
| pty: %{
state.pty
| width: width,
height: height,
pixwidth: pixwidth,
pixheight: pixheight
}
}}
end
def handle_ssh_msg(
{:ssh_cm, connection_handler, {:shell, channel_id, want_reply?}},
state
) do
:ssh_connection.reply_request(connection_handler, want_reply?, :success, channel_id)
{:ok, client_pid} =
GenServer.start_link(Chessh.SSH.Client, [self(), state.pty.width, state.pty.height])
{:ok, %{state | client_pid: client_pid, shell: true}}
end
def handle_ssh_msg(
{:ssh_cm, connection_handler, {:exec, channel_id, want_reply?, cmd}},
state
) do
:ssh_connection.reply_request(connection_handler, want_reply?, :success, channel_id)
Logger.debug("EXEC #{cmd}")
{:ok, state}
end
def handle_ssh_msg(
{:ssh_cm, _connection_handler, {:eof, _channel_id}},
state
) do
Logger.debug("EOF")
{:ok, state}
end
def handle_ssh_msg(
{:ssh_cm, _connection_handler, {:signal, _channel_id, signal}},
state
) do
Logger.debug("SIGNAL #{signal}")
{:ok, state}
end
def handle_ssh_msg(
{:ssh_cm, _connection_handler, {:exit_signal, channel_id, signal, err, lang}},
state
) do
Logger.debug("EXIT SIGNAL #{signal} #{err} #{lang}")
{:stop, channel_id, state}
end
def handle_ssh_msg(
{:ssh_cm, _connection_handler, {:exit_STATUS, channel_id, status}},
state
) do
Logger.debug("EXIT STATUS #{status}")
{:stop, channel_id, state}
end
def terminate(_reason, _state) do
:ok
end
end
|
