mirror of
https://github.com/NuSkooler/enigma-bbs.git
synced 2025-07-21 10:15:55 +02:00
Pardon the noise. More tab to space conversion!
This commit is contained in:
Bryan Ashby
parent
c3635bb26b
commit
1d8be6b014
128 changed files with 8017 additions and 8017 deletions
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@ -1,166 +1,166 @@
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/* jslint node: true */
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'use strict';
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// ENiGMA½
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const baseClient = require('../../client.js');
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const Log = require('../../logger.js').log;
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const LoginServerModule = require('../../login_server_module.js');
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const Config = require('../../config.js').get;
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const EnigAssert = require('../../enigma_assert.js');
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const { stringFromNullTermBuffer } = require('../../string_util.js');
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// ENiGMA½
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const baseClient = require('../../client.js');
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const Log = require('../../logger.js').log;
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const LoginServerModule = require('../../login_server_module.js');
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const Config = require('../../config.js').get;
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const EnigAssert = require('../../enigma_assert.js');
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const { stringFromNullTermBuffer } = require('../../string_util.js');
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// deps
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const net = require('net');
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const buffers = require('buffers');
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const { Parser } = require('binary-parser');
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const util = require('util');
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// deps
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const net = require('net');
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const buffers = require('buffers');
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const { Parser } = require('binary-parser');
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const util = require('util');
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//var debug = require('debug')('telnet');
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//var debug = require('debug')('telnet');
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const ModuleInfo = exports.moduleInfo = {
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name : 'Telnet',
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desc : 'Telnet Server',
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author : 'NuSkooler',
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isSecure : false,
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packageName : 'codes.l33t.enigma.telnet.server',
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name : 'Telnet',
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desc : 'Telnet Server',
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author : 'NuSkooler',
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isSecure : false,
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packageName : 'codes.l33t.enigma.telnet.server',
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};
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exports.TelnetClient = TelnetClient;
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exports.TelnetClient = TelnetClient;
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//
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// Telnet Protocol Resources
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// * http://pcmicro.com/netfoss/telnet.html
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// * http://mud-dev.wikidot.com/telnet:negotiation
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// Telnet Protocol Resources
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// * http://pcmicro.com/netfoss/telnet.html
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// * http://mud-dev.wikidot.com/telnet:negotiation
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//
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/*
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TODO:
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* Document COMMANDS -- add any missing
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* Document OPTIONS -- add any missing
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* Internally handle OPTIONS:
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* Some should be emitted generically
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* Some should be handled internally -- denied, handled, etc.
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*
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TODO:
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* Document COMMANDS -- add any missing
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* Document OPTIONS -- add any missing
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* Internally handle OPTIONS:
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* Some should be emitted generically
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* Some should be handled internally -- denied, handled, etc.
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*
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* Allow term (ttype) to be set by environ sub negotiation
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* Allow term (ttype) to be set by environ sub negotiation
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* Process terms in loop.... research needed
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* Process terms in loop.... research needed
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* Handle will/won't
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* Handle do's, ..
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* Some won't should close connection
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* Handle will/won't
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* Handle do's, ..
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* Some won't should close connection
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* Options/Commands we don't understand shouldn't crash the server!!
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* Options/Commands we don't understand shouldn't crash the server!!
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*/
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const COMMANDS = {
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SE : 240, // End of Sub-Negotation Parameters
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NOP : 241, // No Operation
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DM : 242, // Data Mark
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BRK : 243, // Break
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IP : 244, // Interrupt Process
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AO : 245, // Abort Output
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AYT : 246, // Are You There?
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EC : 247, // Erase Character
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EL : 248, // Erase Line
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GA : 249, // Go Ahead
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SB : 250, // Start Sub-Negotiation Parameters
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WILL : 251, //
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WONT : 252,
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DO : 253,
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DONT : 254,
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IAC : 255, // (Data Byte)
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SE : 240, // End of Sub-Negotation Parameters
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NOP : 241, // No Operation
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DM : 242, // Data Mark
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BRK : 243, // Break
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IP : 244, // Interrupt Process
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AO : 245, // Abort Output
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AYT : 246, // Are You There?
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EC : 247, // Erase Character
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EL : 248, // Erase Line
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GA : 249, // Go Ahead
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SB : 250, // Start Sub-Negotiation Parameters
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WILL : 251, //
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WONT : 252,
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DO : 253,
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DONT : 254,
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IAC : 255, // (Data Byte)
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};
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//
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// Resources:
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// * http://www.faqs.org/rfcs/rfc1572.html
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// Resources:
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// * http://www.faqs.org/rfcs/rfc1572.html
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//
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const SB_COMMANDS = {
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IS : 0,
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SEND : 1,
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INFO : 2,
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IS : 0,
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SEND : 1,
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INFO : 2,
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};
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//
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// Telnet Options
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// Telnet Options
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//
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// Resources
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// * http://mars.netanya.ac.il/~unesco/cdrom/booklet/HTML/NETWORKING/node300.html
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// * http://www.networksorcery.com/enp/protocol/telnet.htm
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// Resources
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// * http://mars.netanya.ac.il/~unesco/cdrom/booklet/HTML/NETWORKING/node300.html
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// * http://www.networksorcery.com/enp/protocol/telnet.htm
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//
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const OPTIONS = {
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TRANSMIT_BINARY : 0, // http://tools.ietf.org/html/rfc856
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ECHO : 1, // http://tools.ietf.org/html/rfc857
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// RECONNECTION : 2
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SUPPRESS_GO_AHEAD : 3, // aka 'SGA': RFC 858 @ http://tools.ietf.org/html/rfc858
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//APPROX_MESSAGE_SIZE : 4
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STATUS : 5, // http://tools.ietf.org/html/rfc859
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TIMING_MARK : 6, // http://tools.ietf.org/html/rfc860
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//RC_TRANS_AND_ECHO : 7, // aka 'RCTE' @ http://www.rfc-base.org/txt/rfc-726.txt
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//OUPUT_LINE_WIDTH : 8,
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//OUTPUT_PAGE_SIZE : 9, //
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//OUTPUT_CARRIAGE_RETURN_DISP : 10, // RFC 652
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//OUTPUT_HORIZ_TABSTOPS : 11, // RFC 653
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//OUTPUT_HORIZ_TAB_DISP : 12, // RFC 654
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//OUTPUT_FORMFEED_DISP : 13, // RFC 655
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//OUTPUT_VERT_TABSTOPS : 14, // RFC 656
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//OUTPUT_VERT_TAB_DISP : 15, // RFC 657
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//OUTPUT_LF_DISP : 16, // RFC 658
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//EXTENDED_ASCII : 17, // RFC 659
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//LOGOUT : 18, // RFC 727
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//BYTE_MACRO : 19, // RFC 753
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//DATA_ENTRY_TERMINAL : 20, // RFC 1043
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//SUPDUP : 21, // RFC 736
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//SUPDUP_OUTPUT : 22, // RFC 749
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SEND_LOCATION : 23, // RFC 779
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TERMINAL_TYPE : 24, // aka 'TTYPE': RFC 1091 @ http://tools.ietf.org/html/rfc1091
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//END_OF_RECORD : 25, // RFC 885
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//TACACS_USER_ID : 26, // RFC 927
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//OUTPUT_MARKING : 27, // RFC 933
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//TERMINCAL_LOCATION_NUMBER : 28, // RFC 946
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//TELNET_3270_REGIME : 29, // RFC 1041
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WINDOW_SIZE : 31, // aka 'NAWS': RFC 1073 @ http://tools.ietf.org/html/rfc1073
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TERMINAL_SPEED : 32, // RFC 1079 @ http://tools.ietf.org/html/rfc1079
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REMOTE_FLOW_CONTROL : 33, // RFC 1072 @ http://tools.ietf.org/html/rfc1372
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LINEMODE : 34, // RFC 1184 @ http://tools.ietf.org/html/rfc1184
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X_DISPLAY_LOCATION : 35, // aka 'XDISPLOC': RFC 1096 @ http://tools.ietf.org/html/rfc1096
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NEW_ENVIRONMENT_DEP : 36, // aka 'NEW-ENVIRON': RFC 1408 @ http://tools.ietf.org/html/rfc1408 (note: RFC 1572 is an update to this)
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AUTHENTICATION : 37, // RFC 2941 @ http://tools.ietf.org/html/rfc2941
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ENCRYPT : 38, // RFC 2946 @ http://tools.ietf.org/html/rfc2946
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NEW_ENVIRONMENT : 39, // aka 'NEW-ENVIRON': RFC 1572 @ http://tools.ietf.org/html/rfc1572 (note: update to RFC 1408)
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//TN3270E : 40, // RFC 2355
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//XAUTH : 41,
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//CHARSET : 42, // RFC 2066
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//REMOTE_SERIAL_PORT : 43,
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//COM_PORT_CONTROL : 44, // RFC 2217
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//SUPRESS_LOCAL_ECHO : 45,
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//START_TLS : 46,
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//KERMIT : 47, // RFC 2840
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//SEND_URL : 48,
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//FORWARD_X : 49,
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TRANSMIT_BINARY : 0, // http://tools.ietf.org/html/rfc856
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ECHO : 1, // http://tools.ietf.org/html/rfc857
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// RECONNECTION : 2
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SUPPRESS_GO_AHEAD : 3, // aka 'SGA': RFC 858 @ http://tools.ietf.org/html/rfc858
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//APPROX_MESSAGE_SIZE : 4
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STATUS : 5, // http://tools.ietf.org/html/rfc859
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TIMING_MARK : 6, // http://tools.ietf.org/html/rfc860
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//RC_TRANS_AND_ECHO : 7, // aka 'RCTE' @ http://www.rfc-base.org/txt/rfc-726.txt
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//OUPUT_LINE_WIDTH : 8,
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//OUTPUT_PAGE_SIZE : 9, //
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//OUTPUT_CARRIAGE_RETURN_DISP : 10, // RFC 652
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//OUTPUT_HORIZ_TABSTOPS : 11, // RFC 653
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//OUTPUT_HORIZ_TAB_DISP : 12, // RFC 654
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//OUTPUT_FORMFEED_DISP : 13, // RFC 655
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//OUTPUT_VERT_TABSTOPS : 14, // RFC 656
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//OUTPUT_VERT_TAB_DISP : 15, // RFC 657
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//OUTPUT_LF_DISP : 16, // RFC 658
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//EXTENDED_ASCII : 17, // RFC 659
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//LOGOUT : 18, // RFC 727
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//BYTE_MACRO : 19, // RFC 753
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//DATA_ENTRY_TERMINAL : 20, // RFC 1043
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//SUPDUP : 21, // RFC 736
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//SUPDUP_OUTPUT : 22, // RFC 749
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SEND_LOCATION : 23, // RFC 779
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TERMINAL_TYPE : 24, // aka 'TTYPE': RFC 1091 @ http://tools.ietf.org/html/rfc1091
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//END_OF_RECORD : 25, // RFC 885
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//TACACS_USER_ID : 26, // RFC 927
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//OUTPUT_MARKING : 27, // RFC 933
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//TERMINCAL_LOCATION_NUMBER : 28, // RFC 946
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//TELNET_3270_REGIME : 29, // RFC 1041
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WINDOW_SIZE : 31, // aka 'NAWS': RFC 1073 @ http://tools.ietf.org/html/rfc1073
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TERMINAL_SPEED : 32, // RFC 1079 @ http://tools.ietf.org/html/rfc1079
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REMOTE_FLOW_CONTROL : 33, // RFC 1072 @ http://tools.ietf.org/html/rfc1372
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LINEMODE : 34, // RFC 1184 @ http://tools.ietf.org/html/rfc1184
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X_DISPLAY_LOCATION : 35, // aka 'XDISPLOC': RFC 1096 @ http://tools.ietf.org/html/rfc1096
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NEW_ENVIRONMENT_DEP : 36, // aka 'NEW-ENVIRON': RFC 1408 @ http://tools.ietf.org/html/rfc1408 (note: RFC 1572 is an update to this)
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AUTHENTICATION : 37, // RFC 2941 @ http://tools.ietf.org/html/rfc2941
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ENCRYPT : 38, // RFC 2946 @ http://tools.ietf.org/html/rfc2946
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NEW_ENVIRONMENT : 39, // aka 'NEW-ENVIRON': RFC 1572 @ http://tools.ietf.org/html/rfc1572 (note: update to RFC 1408)
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//TN3270E : 40, // RFC 2355
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//XAUTH : 41,
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//CHARSET : 42, // RFC 2066
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//REMOTE_SERIAL_PORT : 43,
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//COM_PORT_CONTROL : 44, // RFC 2217
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//SUPRESS_LOCAL_ECHO : 45,
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//START_TLS : 46,
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//KERMIT : 47, // RFC 2840
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//SEND_URL : 48,
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//FORWARD_X : 49,
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//PRAGMA_LOGON : 138,
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//SSPI_LOGON : 139,
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//PRAGMA_HEARTBEAT : 140
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//PRAGMA_LOGON : 138,
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//SSPI_LOGON : 139,
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//PRAGMA_HEARTBEAT : 140
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ARE_YOU_THERE : 246, // aka 'AYT' RFC 854 @ https://tools.ietf.org/html/rfc854
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ARE_YOU_THERE : 246, // aka 'AYT' RFC 854 @ https://tools.ietf.org/html/rfc854
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EXTENDED_OPTIONS_LIST : 255, // RFC 861 (STD 32)
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EXTENDED_OPTIONS_LIST : 255, // RFC 861 (STD 32)
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};
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// Commands used within NEW_ENVIRONMENT[_DEP]
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// Commands used within NEW_ENVIRONMENT[_DEP]
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const NEW_ENVIRONMENT_COMMANDS = {
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VAR : 0,
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VALUE : 1,
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ESC : 2,
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USERVAR : 3,
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VAR : 0,
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VALUE : 1,
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ESC : 2,
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USERVAR : 3,
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};
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const IAC_BUF = Buffer.from([ COMMANDS.IAC ]);
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const IAC_SE_BUF = Buffer.from([ COMMANDS.IAC, COMMANDS.SE ]);
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const IAC_BUF = Buffer.from([ COMMANDS.IAC ]);
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const IAC_SE_BUF = Buffer.from([ COMMANDS.IAC, COMMANDS.SE ]);
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const COMMAND_NAMES = Object.keys(COMMANDS).reduce(function(names, name) {
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names[COMMANDS[name]] = name.toLowerCase();
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@ -178,9 +178,9 @@ const COMMAND_IMPLS = {};
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};
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});
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// :TODO: See TooTallNate's telnet.js: Handle COMMAND_IMPL for IAC in binary mode
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// :TODO: See TooTallNate's telnet.js: Handle COMMAND_IMPL for IAC in binary mode
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// Create option names such as 'transmit binary' -> OPTIONS.TRANSMIT_BINARY
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// Create option names such as 'transmit binary' -> OPTIONS.TRANSMIT_BINARY
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const OPTION_NAMES = Object.keys(OPTIONS).reduce(function(names, name) {
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names[OPTIONS[name]] = name.toLowerCase().replace(/_/g, ' ');
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return names;
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@ -193,19 +193,19 @@ function unknownOption(bufs, i, event) {
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}
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const OPTION_IMPLS = {};
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// :TODO: fill in the rest...
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OPTION_IMPLS.NO_ARGS =
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OPTION_IMPLS[OPTIONS.ECHO] =
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OPTION_IMPLS[OPTIONS.STATUS] =
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OPTION_IMPLS[OPTIONS.LINEMODE] =
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OPTION_IMPLS[OPTIONS.TRANSMIT_BINARY] =
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OPTION_IMPLS[OPTIONS.AUTHENTICATION] =
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OPTION_IMPLS[OPTIONS.TERMINAL_SPEED] =
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OPTION_IMPLS[OPTIONS.REMOTE_FLOW_CONTROL] =
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OPTION_IMPLS[OPTIONS.X_DISPLAY_LOCATION] =
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OPTION_IMPLS[OPTIONS.SEND_LOCATION] =
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OPTION_IMPLS[OPTIONS.ARE_YOU_THERE] =
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OPTION_IMPLS[OPTIONS.SUPPRESS_GO_AHEAD] = function(bufs, i, event) {
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// :TODO: fill in the rest...
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OPTION_IMPLS.NO_ARGS =
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OPTION_IMPLS[OPTIONS.ECHO] =
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OPTION_IMPLS[OPTIONS.STATUS] =
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OPTION_IMPLS[OPTIONS.LINEMODE] =
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OPTION_IMPLS[OPTIONS.TRANSMIT_BINARY] =
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OPTION_IMPLS[OPTIONS.AUTHENTICATION] =
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OPTION_IMPLS[OPTIONS.TERMINAL_SPEED] =
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OPTION_IMPLS[OPTIONS.REMOTE_FLOW_CONTROL] =
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OPTION_IMPLS[OPTIONS.X_DISPLAY_LOCATION] =
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OPTION_IMPLS[OPTIONS.SEND_LOCATION] =
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OPTION_IMPLS[OPTIONS.ARE_YOU_THERE] =
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OPTION_IMPLS[OPTIONS.SUPPRESS_GO_AHEAD] = function(bufs, i, event) {
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event.buf = bufs.splice(0, i).toBuffer();
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return event;
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};
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|
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@ -214,12 +214,12 @@ OPTION_IMPLS[OPTIONS.TERMINAL_TYPE] = function(bufs, i, event) {
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if(event.commandCode !== COMMANDS.SB) {
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OPTION_IMPLS.NO_ARGS(bufs, i, event);
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} else {
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// We need 4 bytes header + data + IAC SE
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// We need 4 bytes header + data + IAC SE
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if(bufs.length < 7) {
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return MORE_DATA_REQUIRED;
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}
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||||
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||||
const end = bufs.indexOf(IAC_SE_BUF, 5); // look past header bytes
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const end = bufs.indexOf(IAC_SE_BUF, 5); // look past header bytes
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if(-1 === end) {
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return MORE_DATA_REQUIRED;
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}
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@ -232,10 +232,10 @@ OPTION_IMPLS[OPTIONS.TERMINAL_TYPE] = function(bufs, i, event) {
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.uint8('opt')
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.uint8('is')
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.array('ttype', {
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type : 'uint8',
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readUntil : b => 255 === b, // 255=COMMANDS.IAC
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type : 'uint8',
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readUntil : b => 255 === b, // 255=COMMANDS.IAC
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})
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// note we read iac2 above
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// note we read iac2 above
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.uint8('se')
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.parse(bufs.toBuffer());
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} catch(e) {
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@ -248,10 +248,10 @@ OPTION_IMPLS[OPTIONS.TERMINAL_TYPE] = function(bufs, i, event) {
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EnigAssert(OPTIONS.TERMINAL_TYPE === ttypeCmd.opt);
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EnigAssert(SB_COMMANDS.IS === ttypeCmd.is);
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EnigAssert(ttypeCmd.ttype.length > 0);
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// note we found IAC_SE above
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||||
// note we found IAC_SE above
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||||
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||||
// some terminals such as NetRunner provide a NULL-terminated buffer
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||||
// slice to remove IAC
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||||
// some terminals such as NetRunner provide a NULL-terminated buffer
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||||
// slice to remove IAC
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||||
event.ttype = stringFromNullTermBuffer(ttypeCmd.ttype.slice(0, -1), 'ascii');
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||||
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bufs.splice(0, end);
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@ -264,7 +264,7 @@ OPTION_IMPLS[OPTIONS.WINDOW_SIZE] = function(bufs, i, event) {
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if(event.commandCode !== COMMANDS.SB) {
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OPTION_IMPLS.NO_ARGS(bufs, i, event);
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} else {
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||||
// we need 9 bytes
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||||
// we need 9 bytes
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||||
if(bufs.length < 9) {
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||||
return MORE_DATA_REQUIRED;
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||||
}
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||||
|
|
@ -291,39 +291,39 @@ OPTION_IMPLS[OPTIONS.WINDOW_SIZE] = function(bufs, i, event) {
|
|||
EnigAssert(COMMANDS.IAC === nawsCmd.iac2);
|
||||
EnigAssert(COMMANDS.SE === nawsCmd.se);
|
||||
|
||||
event.cols = event.columns = event.width = nawsCmd.width;
|
||||
event.rows = event.height = nawsCmd.height;
|
||||
event.cols = event.columns = event.width = nawsCmd.width;
|
||||
event.rows = event.height = nawsCmd.height;
|
||||
}
|
||||
return event;
|
||||
};
|
||||
|
||||
// Build an array of delimiters for parsing NEW_ENVIRONMENT[_DEP]
|
||||
// Build an array of delimiters for parsing NEW_ENVIRONMENT[_DEP]
|
||||
const NEW_ENVIRONMENT_DELIMITERS = [];
|
||||
Object.keys(NEW_ENVIRONMENT_COMMANDS).forEach(function onKey(k) {
|
||||
NEW_ENVIRONMENT_DELIMITERS.push(NEW_ENVIRONMENT_COMMANDS[k]);
|
||||
});
|
||||
|
||||
// Handle the deprecated RFC 1408 & the updated RFC 1572:
|
||||
OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT_DEP] =
|
||||
OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
||||
// Handle the deprecated RFC 1408 & the updated RFC 1572:
|
||||
OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT_DEP] =
|
||||
OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
||||
if(event.commandCode !== COMMANDS.SB) {
|
||||
OPTION_IMPLS.NO_ARGS(bufs, i, event);
|
||||
} else {
|
||||
//
|
||||
// We need 4 bytes header + <optional payload> + IAC SE
|
||||
// Many terminals send a empty list:
|
||||
// IAC SB NEW-ENVIRON IS IAC SE
|
||||
// We need 4 bytes header + <optional payload> + IAC SE
|
||||
// Many terminals send a empty list:
|
||||
// IAC SB NEW-ENVIRON IS IAC SE
|
||||
//
|
||||
if(bufs.length < 6) {
|
||||
return MORE_DATA_REQUIRED;
|
||||
}
|
||||
|
||||
let end = bufs.indexOf(IAC_SE_BUF, 4); // look past header bytes
|
||||
let end = bufs.indexOf(IAC_SE_BUF, 4); // look past header bytes
|
||||
if(-1 === end) {
|
||||
return MORE_DATA_REQUIRED;
|
||||
}
|
||||
|
||||
// :TODO: It's likely that we could do all the env name/value parsing directly in Parser.
|
||||
// :TODO: It's likely that we could do all the env name/value parsing directly in Parser.
|
||||
|
||||
let envCmd;
|
||||
try {
|
||||
|
|
@ -331,12 +331,12 @@ OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
|||
.uint8('iac1')
|
||||
.uint8('sb')
|
||||
.uint8('opt')
|
||||
.uint8('isOrInfo') // IS=initial, INFO=updates
|
||||
.uint8('isOrInfo') // IS=initial, INFO=updates
|
||||
.array('envBlock', {
|
||||
type : 'uint8',
|
||||
readUntil : b => 255 === b, // 255=COMMANDS.IAC
|
||||
readUntil : b => 255 === b, // 255=COMMANDS.IAC
|
||||
})
|
||||
// note we consume IAC above
|
||||
// note we consume IAC above
|
||||
.uint8('se')
|
||||
.parse(bufs.splice(0, bufs.length).toBuffer());
|
||||
} catch(e) {
|
||||
|
|
@ -350,34 +350,34 @@ OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
|||
EnigAssert(SB_COMMANDS.IS === envCmd.isOrInfo || SB_COMMANDS.INFO === envCmd.isOrInfo);
|
||||
|
||||
if(OPTIONS.NEW_ENVIRONMENT_DEP === envCmd.opt) {
|
||||
// :TODO: we should probably support this for legacy clients?
|
||||
// :TODO: we should probably support this for legacy clients?
|
||||
Log.warn('Handling deprecated RFC 1408 NEW-ENVIRON');
|
||||
}
|
||||
|
||||
const envBuf = envCmd.envBlock.slice(0, -1); // remove IAC
|
||||
const envBuf = envCmd.envBlock.slice(0, -1); // remove IAC
|
||||
|
||||
if(envBuf.length < 4) { // TYPE + single char name + sep + single char value
|
||||
// empty env block
|
||||
if(envBuf.length < 4) { // TYPE + single char name + sep + single char value
|
||||
// empty env block
|
||||
return event;
|
||||
}
|
||||
|
||||
const States = {
|
||||
Name : 1,
|
||||
Value : 2,
|
||||
Name : 1,
|
||||
Value : 2,
|
||||
};
|
||||
|
||||
let state = States.Name;
|
||||
const setVars = {};
|
||||
const delVars = [];
|
||||
let varName;
|
||||
// :TODO: handle ESC type!!!
|
||||
// :TODO: handle ESC type!!!
|
||||
while(envBuf.length) {
|
||||
switch(state) {
|
||||
case States.Name :
|
||||
{
|
||||
const type = parseInt(envBuf.splice(0, 1));
|
||||
if(![ NEW_ENVIRONMENT_COMMANDS.VAR, NEW_ENVIRONMENT_COMMANDS.USERVAR, NEW_ENVIRONMENT_COMMANDS.ESC ].includes(type)) {
|
||||
return event; // fail :(
|
||||
return event; // fail :(
|
||||
}
|
||||
|
||||
let nameEnd = envBuf.indexOf(NEW_ENVIRONMENT_COMMANDS.VALUE);
|
||||
|
|
@ -387,7 +387,7 @@ OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
|||
|
||||
varName = envBuf.splice(0, nameEnd);
|
||||
if(!varName) {
|
||||
return event; // something is wrong.
|
||||
return event; // something is wrong.
|
||||
}
|
||||
|
||||
varName = Buffer.from(varName).toString('ascii');
|
||||
|
|
@ -397,7 +397,7 @@ OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
|||
state = States.Value;
|
||||
} else {
|
||||
state = States.Name;
|
||||
delVars.push(varName); // no value; del this var
|
||||
delVars.push(varName); // no value; del this var
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
|
@ -423,15 +423,15 @@ OPTION_IMPLS[OPTIONS.NEW_ENVIRONMENT] = function(bufs, i, event) {
|
|||
}
|
||||
}
|
||||
|
||||
// :TODO: Handle deleting previously set vars via delVars
|
||||
event.type = envCmd.isOrInfo;
|
||||
event.envVars = setVars;
|
||||
// :TODO: Handle deleting previously set vars via delVars
|
||||
event.type = envCmd.isOrInfo;
|
||||
event.envVars = setVars;
|
||||
}
|
||||
|
||||
return event;
|
||||
};
|
||||
|
||||
const MORE_DATA_REQUIRED = 0xfeedface;
|
||||
const MORE_DATA_REQUIRED = 0xfeedface;
|
||||
|
||||
function parseBufs(bufs) {
|
||||
EnigAssert(bufs.length >= 2);
|
||||
|
|
@ -440,16 +440,16 @@ function parseBufs(bufs) {
|
|||
}
|
||||
|
||||
function parseCommand(bufs, i, event) {
|
||||
const command = bufs.get(i); // :TODO: fix deprecation... [i] is not the same
|
||||
event.commandCode = command;
|
||||
event.command = COMMAND_NAMES[command];
|
||||
const command = bufs.get(i); // :TODO: fix deprecation... [i] is not the same
|
||||
event.commandCode = command;
|
||||
event.command = COMMAND_NAMES[command];
|
||||
|
||||
const handler = COMMAND_IMPLS[command];
|
||||
if(handler) {
|
||||
return handler(bufs, i + 1, event);
|
||||
} else {
|
||||
if(2 !== bufs.length) {
|
||||
Log.warn( { bufsLength : bufs.length }, 'Expected bufs length of 2'); // expected: IAC + COMMAND
|
||||
Log.warn( { bufsLength : bufs.length }, 'Expected bufs length of 2'); // expected: IAC + COMMAND
|
||||
}
|
||||
|
||||
event.buf = bufs.splice(0, 2).toBuffer();
|
||||
|
|
@ -458,9 +458,9 @@ function parseCommand(bufs, i, event) {
|
|||
}
|
||||
|
||||
function parseOption(bufs, i, event) {
|
||||
const option = bufs.get(i); // :TODO: fix deprecation... [i] is not the same
|
||||
event.optionCode = option;
|
||||
event.option = OPTION_NAMES[option];
|
||||
const option = bufs.get(i); // :TODO: fix deprecation... [i] is not the same
|
||||
event.optionCode = option;
|
||||
event.option = OPTION_NAMES[option];
|
||||
|
||||
const handler = OPTION_IMPLS[option];
|
||||
return handler ? handler(bufs, i + 1, event) : unknownOption(bufs, i + 1, event);
|
||||
|
|
@ -470,20 +470,20 @@ function parseOption(bufs, i, event) {
|
|||
function TelnetClient(input, output) {
|
||||
baseClient.Client.apply(this, arguments);
|
||||
|
||||
const self = this;
|
||||
const self = this;
|
||||
|
||||
let bufs = buffers();
|
||||
this.bufs = bufs;
|
||||
let bufs = buffers();
|
||||
this.bufs = bufs;
|
||||
|
||||
this.sentDont = {}; // DON'T's we've already sent
|
||||
this.sentDont = {}; // DON'T's we've already sent
|
||||
|
||||
this.setInputOutput(input, output);
|
||||
|
||||
this.negotiationsComplete = false; // are we in the 'negotiation' phase?
|
||||
this.didReady = false; // have we emit the 'ready' event?
|
||||
this.negotiationsComplete = false; // are we in the 'negotiation' phase?
|
||||
this.didReady = false; // have we emit the 'ready' event?
|
||||
|
||||
this.subNegotiationState = {
|
||||
newEnvironRequested : false,
|
||||
newEnvironRequested : false,
|
||||
};
|
||||
|
||||
this.dataHandler = function(b) {
|
||||
|
|
@ -498,7 +498,7 @@ function TelnetClient(input, output) {
|
|||
while((i = bufs.indexOf(IAC_BUF)) >= 0) {
|
||||
|
||||
//
|
||||
// Some clients will send even IAC separate from data
|
||||
// Some clients will send even IAC separate from data
|
||||
//
|
||||
if(bufs.length <= (i + 1)) {
|
||||
i = MORE_DATA_REQUIRED;
|
||||
|
|
@ -517,7 +517,7 @@ function TelnetClient(input, output) {
|
|||
break;
|
||||
} else if(i) {
|
||||
if(i.option) {
|
||||
self.emit(i.option, i); // "transmit binary", "echo", ...
|
||||
self.emit(i.option, i); // "transmit binary", "echo", ...
|
||||
}
|
||||
|
||||
self.handleTelnetEvent(i);
|
||||
|
|
@ -530,8 +530,8 @@ function TelnetClient(input, output) {
|
|||
|
||||
if(MORE_DATA_REQUIRED !== i && bufs.length > 0) {
|
||||
//
|
||||
// Standard data payload. This can still be "non-user" data
|
||||
// such as ANSI control, but we don't handle that here.
|
||||
// Standard data payload. This can still be "non-user" data
|
||||
// such as ANSI control, but we don't handle that here.
|
||||
//
|
||||
self.emit('data', bufs.splice(0).toBuffer());
|
||||
}
|
||||
|
|
@ -576,7 +576,7 @@ function TelnetClient(input, output) {
|
|||
util.inherits(TelnetClient, baseClient.Client);
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
// Telnet Command/Option handling
|
||||
// Telnet Command/Option handling
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
TelnetClient.prototype.handleTelnetEvent = function(evt) {
|
||||
|
||||
|
|
@ -584,14 +584,14 @@ TelnetClient.prototype.handleTelnetEvent = function(evt) {
|
|||
return this.connectionWarn( { evt : evt }, 'No command for event');
|
||||
}
|
||||
|
||||
// handler name e.g. 'handleWontCommand'
|
||||
// handler name e.g. 'handleWontCommand'
|
||||
const handlerName = `handle${evt.command.charAt(0).toUpperCase()}${evt.command.substr(1)}Command`;
|
||||
|
||||
if(this[handlerName]) {
|
||||
// specialized
|
||||
// specialized
|
||||
this[handlerName](evt);
|
||||
} else {
|
||||
// generic-ish
|
||||
// generic-ish
|
||||
this.handleMiscCommand(evt);
|
||||
}
|
||||
};
|
||||
|
|
@ -599,16 +599,16 @@ TelnetClient.prototype.handleTelnetEvent = function(evt) {
|
|||
TelnetClient.prototype.handleWillCommand = function(evt) {
|
||||
if('terminal type' === evt.option) {
|
||||
//
|
||||
// See RFC 1091 @ http://www.faqs.org/rfcs/rfc1091.html
|
||||
// See RFC 1091 @ http://www.faqs.org/rfcs/rfc1091.html
|
||||
//
|
||||
this.requestTerminalType();
|
||||
} else if('new environment' === evt.option) {
|
||||
//
|
||||
// See RFC 1572 @ http://www.faqs.org/rfcs/rfc1572.html
|
||||
// See RFC 1572 @ http://www.faqs.org/rfcs/rfc1572.html
|
||||
//
|
||||
this.requestNewEnvironment();
|
||||
} else {
|
||||
// :TODO: temporary:
|
||||
// :TODO: temporary:
|
||||
this.connectionTrace(evt, 'WILL');
|
||||
}
|
||||
};
|
||||
|
|
@ -628,20 +628,20 @@ TelnetClient.prototype.handleWontCommand = function(evt) {
|
|||
};
|
||||
|
||||
TelnetClient.prototype.handleDoCommand = function(evt) {
|
||||
// :TODO: handle the rest, e.g. echo nd the like
|
||||
// :TODO: handle the rest, e.g. echo nd the like
|
||||
|
||||
if('linemode' === evt.option) {
|
||||
//
|
||||
// Client wants to enable linemode editing. Denied.
|
||||
// Client wants to enable linemode editing. Denied.
|
||||
//
|
||||
this.wont.linemode();
|
||||
} else if('encrypt' === evt.option) {
|
||||
//
|
||||
// Client wants to enable encryption. Denied.
|
||||
// Client wants to enable encryption. Denied.
|
||||
//
|
||||
this.wont.encrypt();
|
||||
} else {
|
||||
// :TODO: temporary:
|
||||
// :TODO: temporary:
|
||||
this.connectionTrace(evt, 'DO');
|
||||
}
|
||||
};
|
||||
|
|
@ -655,33 +655,33 @@ TelnetClient.prototype.handleSbCommand = function(evt) {
|
|||
|
||||
if('terminal type' === evt.option) {
|
||||
//
|
||||
// See RFC 1091 @ http://www.faqs.org/rfcs/rfc1091.html
|
||||
// See RFC 1091 @ http://www.faqs.org/rfcs/rfc1091.html
|
||||
//
|
||||
// :TODO: According to RFC 1091 @ http://www.faqs.org/rfcs/rfc1091.html
|
||||
// We should keep asking until we see a repeat. From there, determine the best type/etc.
|
||||
// :TODO: According to RFC 1091 @ http://www.faqs.org/rfcs/rfc1091.html
|
||||
// We should keep asking until we see a repeat. From there, determine the best type/etc.
|
||||
self.setTermType(evt.ttype);
|
||||
|
||||
self.negotiationsComplete = true; // :TODO: throw in a array of what we've taken care. Complete = array satisified or timeout
|
||||
self.negotiationsComplete = true; // :TODO: throw in a array of what we've taken care. Complete = array satisified or timeout
|
||||
|
||||
self.readyNow();
|
||||
} else if('new environment' === evt.option) {
|
||||
//
|
||||
// Handling is as follows:
|
||||
// * Map 'TERM' -> 'termType' and only update if ours is 'unknown'
|
||||
// * Map COLUMNS -> 'termWidth' and only update if ours is 0
|
||||
// * Map ROWS -> 'termHeight' and only update if ours is 0
|
||||
// * Add any new variables, ignore any existing
|
||||
// Handling is as follows:
|
||||
// * Map 'TERM' -> 'termType' and only update if ours is 'unknown'
|
||||
// * Map COLUMNS -> 'termWidth' and only update if ours is 0
|
||||
// * Map ROWS -> 'termHeight' and only update if ours is 0
|
||||
// * Add any new variables, ignore any existing
|
||||
//
|
||||
Object.keys(evt.envVars || {} ).forEach(function onEnv(name) {
|
||||
if('TERM' === name && 'unknown' === self.term.termType) {
|
||||
self.setTermType(evt.envVars[name]);
|
||||
} else if('COLUMNS' === name && 0 === self.term.termWidth) {
|
||||
self.term.termWidth = parseInt(evt.envVars[name]);
|
||||
self.clearMciCache(); // term size changes = invalidate cache
|
||||
self.clearMciCache(); // term size changes = invalidate cache
|
||||
self.connectionDebug({ termWidth : self.term.termWidth, source : 'NEW-ENVIRON'}, 'Window width updated');
|
||||
} else if('ROWS' === name && 0 === self.term.termHeight) {
|
||||
self.term.termHeight = parseInt(evt.envVars[name]);
|
||||
self.clearMciCache(); // term size changes = invalidate cache
|
||||
self.clearMciCache(); // term size changes = invalidate cache
|
||||
self.connectionDebug({ termHeight : self.term.termHeight, source : 'NEW-ENVIRON'}, 'Window height updated');
|
||||
} else {
|
||||
if(name in self.term.env) {
|
||||
|
|
@ -704,11 +704,11 @@ TelnetClient.prototype.handleSbCommand = function(evt) {
|
|||
|
||||
} else if('window size' === evt.option) {
|
||||
//
|
||||
// Update termWidth & termHeight.
|
||||
// Set LINES and COLUMNS environment variables as well.
|
||||
// Update termWidth & termHeight.
|
||||
// Set LINES and COLUMNS environment variables as well.
|
||||
//
|
||||
self.term.termWidth = evt.width;
|
||||
self.term.termHeight = evt.height;
|
||||
self.term.termWidth = evt.width;
|
||||
self.term.termHeight = evt.height;
|
||||
|
||||
if(evt.width > 0) {
|
||||
self.term.env.COLUMNS = evt.height;
|
||||
|
|
@ -718,7 +718,7 @@ TelnetClient.prototype.handleSbCommand = function(evt) {
|
|||
self.term.env.ROWS = evt.height;
|
||||
}
|
||||
|
||||
self.clearMciCache(); // term size changes = invalidate cache
|
||||
self.clearMciCache(); // term size changes = invalidate cache
|
||||
|
||||
self.connectionDebug({ termWidth : evt.width , termHeight : evt.height, source : 'NAWS' }, 'Window size updated');
|
||||
} else {
|
||||
|
|
@ -736,11 +736,11 @@ TelnetClient.prototype.handleMiscCommand = function(evt) {
|
|||
EnigAssert(evt.command !== 'undefined' && evt.command.length > 0);
|
||||
|
||||
//
|
||||
// See:
|
||||
// * RFC 854 @ http://tools.ietf.org/html/rfc854
|
||||
// See:
|
||||
// * RFC 854 @ http://tools.ietf.org/html/rfc854
|
||||
//
|
||||
if('ip' === evt.command) {
|
||||
// Interrupt Process (IP)
|
||||
// Interrupt Process (IP)
|
||||
this.log.debug('Interrupt Process (IP) - Ending');
|
||||
|
||||
this.input.end();
|
||||
|
|
@ -817,33 +817,33 @@ TelnetClient.prototype.banner = function() {
|
|||
};
|
||||
|
||||
function Command(command, client) {
|
||||
this.command = COMMANDS[command.toUpperCase()];
|
||||
this.client = client;
|
||||
this.command = COMMANDS[command.toUpperCase()];
|
||||
this.client = client;
|
||||
}
|
||||
|
||||
// Create Command objects with echo, transmit_binary, ...
|
||||
// Create Command objects with echo, transmit_binary, ...
|
||||
Object.keys(OPTIONS).forEach(function(name) {
|
||||
const code = OPTIONS[name];
|
||||
|
||||
Command.prototype[name.toLowerCase()] = function() {
|
||||
const buf = Buffer.alloc(3);
|
||||
buf[0] = COMMANDS.IAC;
|
||||
buf[1] = this.command;
|
||||
buf[2] = code;
|
||||
buf[0] = COMMANDS.IAC;
|
||||
buf[1] = this.command;
|
||||
buf[2] = code;
|
||||
return this.client.output.write(buf);
|
||||
};
|
||||
});
|
||||
|
||||
// Create do, dont, etc. methods on Client
|
||||
// Create do, dont, etc. methods on Client
|
||||
['do', 'dont', 'will', 'wont'].forEach(function(command) {
|
||||
const get = function() {
|
||||
return new Command(command, this);
|
||||
};
|
||||
|
||||
Object.defineProperty(TelnetClient.prototype, command, {
|
||||
get : get,
|
||||
enumerable : true,
|
||||
configurable : true
|
||||
get : get,
|
||||
enumerable : true,
|
||||
configurable : true
|
||||
});
|
||||
});
|
||||
|
||||
|
|
@ -861,9 +861,9 @@ exports.getModule = class TelnetServerModule extends LoginServerModule {
|
|||
this.handleNewClient(client, sock, ModuleInfo);
|
||||
|
||||
//
|
||||
// Set a timeout and attempt to proceed even if we don't know
|
||||
// the term type yet, which is the preferred trigger
|
||||
// for moving along
|
||||
// Set a timeout and attempt to proceed even if we don't know
|
||||
// the term type yet, which is the preferred trigger
|
||||
// for moving along
|
||||
//
|
||||
setTimeout( () => {
|
||||
if(!client.didReady) {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue