%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%
%%% Description : SSH connection protocol
-type role() :: client | server .
-type connection_ref() :: pid().
-type channel_id() :: pos_integer().
-define(DEFAULT_PACKET_SIZE, 65536).
-define(DEFAULT_WINDOW_SIZE, 10*?DEFAULT_PACKET_SIZE).
-define(DEFAULT_TIMEOUT, 5000).
-define(MAX_PROTO_VERSION, 255). % Max length of the hello string
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% CONNECT messages
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%----------------------------------------------------------------------
%%% # SSH_MSG_xxx
%%% Description: Packet types used by the connection protocol.
%%%----------------------------------------------------------------------
-define(SSH_MSG_GLOBAL_REQUEST, 80).
-define(SSH_MSG_REQUEST_SUCCESS, 81).
-define(SSH_MSG_REQUEST_FAILURE, 82).
-define(SSH_MSG_CHANNEL_OPEN, 90).
-define(SSH_MSG_CHANNEL_OPEN_CONFIRMATION, 91).
-define(SSH_MSG_CHANNEL_OPEN_FAILURE, 92).
-define(SSH_MSG_CHANNEL_WINDOW_ADJUST, 93).
-define(SSH_MSG_CHANNEL_DATA, 94).
-define(SSH_MSG_CHANNEL_EXTENDED_DATA, 95).
-define(SSH_MSG_CHANNEL_EOF, 96).
-define(SSH_MSG_CHANNEL_CLOSE, 97).
-define(SSH_MSG_CHANNEL_REQUEST, 98).
-define(SSH_MSG_CHANNEL_SUCCESS, 99).
-define(SSH_MSG_CHANNEL_FAILURE, 100).
-record(ssh_msg_global_request,
{
name,
want_reply,
data %% ...
}).
-record(ssh_msg_request_success,
{
data %% ...
}).
-record(ssh_msg_request_failure,
{
}).
-record(ssh_msg_channel_open,
{
channel_type,
sender_channel,
initial_window_size,
maximum_packet_size,
data %% ...
}).
-record(ssh_msg_channel_open_confirmation,
{
recipient_channel,
sender_channel,
initial_window_size,
maximum_packet_size,
data %% ...
}).
%%%----------------------------------------------------------------------
%%% # SSH_OPEN_xxx
%%% Description: Reason codes for SSH_MSG_OPEN_FAILURE packages.
%%%----------------------------------------------------------------------
-define(SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, 1).
-define(SSH_OPEN_CONNECT_FAILED, 2).
-define(SSH_OPEN_UNKNOWN_CHANNEL_TYPE, 3).
-define(SSH_OPEN_RESOURCE_SHORTAGE, 4).
-record(ssh_msg_channel_open_failure,
{
recipient_channel,
reason,
description,
lang
}).
-record(ssh_msg_channel_window_adjust,
{
recipient_channel,
bytes_to_add
}).
-record(ssh_msg_channel_data,
{
recipient_channel,
data
}).
%%%----------------------------------------------------------------------
%%% # SSH_EXTENDED_DATA_xxx
%%% Description: Type codes for SSH_MSG_CHANNEL_EXTENDED_DATA packages
%%%----------------------------------------------------------------------
-define(SSH_EXTENDED_DATA_DEFAULT, 0).
-define(SSH_EXTENDED_DATA_STDERR, 1).
-record(ssh_msg_channel_extended_data,
{
recipient_channel,
data_type_code,
data
}).
-record(ssh_msg_channel_eof,
{
recipient_channel
}).
-record(ssh_msg_channel_close,
{
recipient_channel
}).
-record(ssh_msg_channel_request,
{
recipient_channel,
request_type,
want_reply,
data %% ...
}).
-record(ssh_msg_channel_success,
{
recipient_channel
}).
-record(ssh_msg_channel_failure,
{
recipient_channel
}).
-define(TERMINAL_WIDTH, 80).
-define(TERMINAL_HEIGHT, 24).
-define(DEFAULT_TERMINAL, "vt100").
-define(TTY_OP_END,0). %% Indicates end of options.
-define(VINTR,1). %% Interrupt character; 255 if none. Similarly for the
%% other characters. Not all of these characters are
%% supported on all systems.
-define(VQUIT,2). %% The quit character (sends SIGQUIT signal on POSIX
%% systems).
-define(VERASE,3). %% Erase the character to left of the cursor.
-define(VKILL,4). %% Kill the current input line.
-define(VEOF,5). %% End-of-file character (sends EOF from the terminal).
-define(VEOL,6). %% End-of-line character in addition to carriage return
%% or,and). linefeed.
-define(VEOL2,7). %% Additional end-of-line character.
-define(VSTART,8). %% Continues paused output (normally control-Q).
-define(VSTOP,9). %% Pauses output (normally control-S).
-define(VSUSP,10). %% Suspends the current program.
-define(VDSUSP,11). %% Another suspend character.
-define(VREPRINT,12). %% Reprints the current input line.
-define(VWERASE,13). %% Erases a word left of cursor.
-define(VLNEXT,14). %% Enter the next character typed literally, even if it
%% is a special character
-define(VFLUSH,15). %% Character to flush output.
-define(VSWTCH,16). %% Switch to a different shell layer.
-define(VSTATUS,17). %% Prints system status line (load, command, pid etc).
-define(VDISCARD,18). %% Toggles the flushing of terminal output.
-define(IGNPAR,30). %% The ignore parity flag. The parameter SHOULD be 0 if
%% this flag is FALSE set, and 1 if it is TRUE.
-define(PARMRK,31). %% Mark parity and framing errors.
-define(INPCK,32). %% Enable checking of parity errors.
-define(ISTRIP,33). %% Strip 8th bit off characters.
-define(INLCR,34). %% Map NL into CR on input.
-define(IGNCR,35). %% Ignore CR on input.
-define(ICRNL,36). %% Map CR to NL on input.
-define(IUCLC,37). %% Translate uppercase characters to lowercase.
-define(IXON,38). %% Enable output flow control.
-define(IXANY,39). %% Any char will restart after stop.
-define(IXOFF,40). %% Enable input flow control.
-define(IMAXBEL,41). %% Ring bell on input queue full.
-define(ISIG,50). %% Enable signals INTR, QUIT, [D]SUSP.
-define(ICANON,51). %% Canonicalize input lines.
-define(XCASE,52). %% Enable input and output of uppercase characters by
%% preceding their lowercase equivalents with `\'.
-define(ECHO,53). %% Enable echoing.
-define(ECHOE,54). %% Visually erase chars.
-define(ECHOK,55). %% Kill character discards current line.
-define(ECHONL,56). %% Echo NL even if ECHO is off.
-define(NOFLSH,57). %% Don't flush after interrupt.
-define(TOSTOP,58). %% Stop background jobs from output.
-define(IEXTEN,59). %% Enable extensions.
-define(ECHOCTL,60). %% Echo control characters as ^(Char).
-define(ECHOKE,61). %% Visual erase for line kill.
-define(PENDIN,62). %% Retype pending input.
-define(OPOST,70). %% Enable output processing.
-define(OLCUC,71). %% Convert lowercase to uppercase.
-define(ONLCR,72). %% Map NL to CR-NL.
-define(OCRNL,73). %% Translate carriage return to newline (output).
-define(ONOCR,74). %% Translate newline to carriage return-newline
%% (output).
-define(ONLRET,75). %% Newline performs a carriage return (output).
-define(CS7,90). %% 7 bit mode.
-define(CS8,91). %% 8 bit mode.
-define(PARENB,92). %% Parity enable.
-define(PARODD,93). %% Odd parity, else even.
%% Specifies the input baud rate in bits per second.
-define(TTY_OP_ISPEED,128).
%% Specifies the output baud rate in bits per second.
-define(TTY_OP_OSPEED,129).
-record(channel,
{
type, %% "session"
sys, %% "none", "shell", "exec" "subsystem"
user, %% "user" process id (default to cm user)
flow_control,
local_id, %% local channel id
recv_window_size,
recv_window_pending = 0, %% Sum of window size updates that has not
%% yet been sent. This limits the number
%% of sent update msgs.
recv_packet_size,
recv_close = false,
remote_id, %% remote channel id
send_window_size,
send_packet_size,
sent_close = false,
send_buf = []
}).
-record(connection, {
requests = [], %% [{ChannelId, Pid}...] awaiting reply on request,
channel_cache,
port_bindings,
channel_id_seed,
cli_spec,
address,
port,
options,
exec,
system_supervisor,
sub_system_supervisor,
connection_supervisor
}).
