841 lines
28 KiB
C
841 lines
28 KiB
C
/****************************************************************************
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* apps/include/netutils/telnetc.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* Leveraged from libtelnet, https://github.com/seanmiddleditch/libtelnet.
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*
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* The original authors of libtelnet are listed below. Per their licesne,
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* "The author or authors of this code dedicate any and all copyright
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* interest in this code to the public domain. We make this dedication for
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* the benefit of the public at large and to the detriment of our heirs and
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* successors. We intend this dedication to be an overt act of
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* relinquishment in perpetuity of all present and future rights to this
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* code under copyright law."
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*
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* Author: Sean Middleditch <sean@sourcemud.org>
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* (Also listed in the AUTHORS file are Jack Kelly <endgame.dos@gmail.com>
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* and Katherine Flavel <kate@elide.org>)
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*/
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/* libtelnet - TELNET protocol handling library
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*
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* SUMMARY:
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*
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* libtelnet is a library for handling the TELNET protocol. It includes
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* routines for parsing incoming data from a remote peer as well as
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* formatting data to send to the remote peer.
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*
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* libtelnet uses a callback-oriented API, allowing application-specific
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* handling of various events. The callback system is also used for
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* buffering outgoing protocol data, allowing the application to maintain
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* control over the actual socket connection.
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*
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* Features supported include the full TELNET protocol, Q-method option
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* negotiation, ZMP, MCCP2, MSSP, and NEW-ENVIRON.
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*
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* CONFORMS TO:
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*
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* RFC854 - http://www.faqs.org/rfcs/rfc854.html
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* RFC855 - http://www.faqs.org/rfcs/rfc855.html
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* RFC1091 - http://www.faqs.org/rfcs/rfc1091.html
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* RFC1143 - http://www.faqs.org/rfcs/rfc1143.html
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* RFC1408 - http://www.faqs.org/rfcs/rfc1408.html
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* RFC1572 - http://www.faqs.org/rfcs/rfc1572.html
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*
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* LICENSE:
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*
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* The author or authors of this code dedicate any and all copyright interest
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* in this code to the public domain. We make this dedication for the benefit
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* of the public at large and to the detriment of our heirs and successors.
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* We intend this dedication to be an overt act of relinquishment in
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* perpetuity of all present and future rights to this code under copyright
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* law.
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*
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* Author: Sean Middleditch <sean@sourcemud.org>
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*/
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#ifndef __APPS_INCLUDE_NETUTILS_TELNETC_H
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#define __APPS_INCLUDE_NETUTILS_TELNETC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdarg.h>
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/* C++ support */
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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/****************************************************************************
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* Pre-proecessor Definitions
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****************************************************************************/
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/* Telnet commands and special values. */
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#define TELNET_IAC 255
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#define TELNET_DONT 254
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#define TELNET_DO 253
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#define TELNET_WONT 252
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#define TELNET_WILL 251
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#define TELNET_SB 250
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#define TELNET_GA 249
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#define TELNET_EL 248
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#define TELNET_EC 247
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#define TELNET_AYT 246
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#define TELNET_AO 245
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#define TELNET_IP 244
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#define TELNET_BREAK 243
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#define TELNET_DM 242
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#define TELNET_NOP 241
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#define TELNET_SE 240
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#define TELNET_EOR 239
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#define TELNET_ABORT 238
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#define TELNET_SUSP 237
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#define TELNET_EOF 236
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/* Telnet options. */
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#define TELNET_TELOPT_BINARY 0
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#define TELNET_TELOPT_ECHO 1
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#define TELNET_TELOPT_RCP 2
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#define TELNET_TELOPT_SGA 3
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#define TELNET_TELOPT_NAMS 4
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#define TELNET_TELOPT_STATUS 5
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#define TELNET_TELOPT_TM 6
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#define TELNET_TELOPT_RCTE 7
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#define TELNET_TELOPT_NAOL 8
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#define TELNET_TELOPT_NAOP 9
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#define TELNET_TELOPT_NAOCRD 10
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#define TELNET_TELOPT_NAOHTS 11
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#define TELNET_TELOPT_NAOHTD 12
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#define TELNET_TELOPT_NAOFFD 13
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#define TELNET_TELOPT_NAOVTS 14
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#define TELNET_TELOPT_NAOVTD 15
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#define TELNET_TELOPT_NAOLFD 16
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#define TELNET_TELOPT_XASCII 17
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#define TELNET_TELOPT_LOGOUT 18
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#define TELNET_TELOPT_BM 19
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#define TELNET_TELOPT_DET 20
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#define TELNET_TELOPT_SUPDUP 21
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#define TELNET_TELOPT_SUPDUPOUTPUT 22
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#define TELNET_TELOPT_SNDLOC 23
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#define TELNET_TELOPT_TTYPE 24
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#define TELNET_TELOPT_EOR 25
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#define TELNET_TELOPT_TUID 26
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#define TELNET_TELOPT_OUTMRK 27
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#define TELNET_TELOPT_TTYLOC 28
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#define TELNET_TELOPT_3270REGIME 29
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#define TELNET_TELOPT_X3PAD 30
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#define TELNET_TELOPT_NAWS 31
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#define TELNET_TELOPT_TSPEED 32
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#define TELNET_TELOPT_LFLOW 33
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#define TELNET_TELOPT_LINEMODE 34
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#define TELNET_TELOPT_XDISPLOC 35
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#define TELNET_TELOPT_ENVIRON 36
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#define TELNET_TELOPT_AUTHENTICATION 37
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#define TELNET_TELOPT_ENCRYPT 38
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#define TELNET_TELOPT_NEW_ENVIRON 39
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#define TELNET_TELOPT_MSSP 70
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#define TELNET_TELOPT_COMPRESS 85
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#define TELNET_TELOPT_COMPRESS2 86
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#define TELNET_TELOPT_ZMP 93
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#define TELNET_TELOPT_EXOPL 255
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#define TELNET_TELOPT_MCCP2 86
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/* TERMINAL-TYPE codes. */
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#define TELNET_TTYPE_IS 0
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#define TELNET_TTYPE_SEND 1
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/* NEW-ENVIRON/ENVIRON codes. */
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#define TELNET_ENVIRON_IS 0
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#define TELNET_ENVIRON_SEND 1
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#define TELNET_ENVIRON_INFO 2
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#define TELNET_ENVIRON_VAR 0
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#define TELNET_ENVIRON_VALUE 1
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#define TELNET_ENVIRON_ESC 2
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#define TELNET_ENVIRON_USERVAR 3
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/* MSSP codes. */
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#define TELNET_MSSP_VAR 1
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#define TELNET_MSSP_VAL 2
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/* Telnet state tracker flags. */
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#define TELNET_FLAG_PROXY (1 << 0)
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#define TELNET_PFLAG_DEFLATE (1 << 7)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Error codes */
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enum telnet_error_e
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{
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TELNET_EOK = 0, /* No error */
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TELNET_EBADVAL, /* Invalid parameter, or API misuse */
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TELNET_ENOMEM, /* Memory allocation failure */
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TELNET_EOVERFLOW, /* Data exceeds buffer size */
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TELNET_EPROTOCOL, /* Invalid sequence of special bytes */
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TELNET_ECOMPRESS /* Error handling compressed streams */
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};
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/* Event codes */
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enum telnet_event_type_e
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{
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TELNET_EV_DATA = 0, /* Raw text data has been received */
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TELNET_EV_SEND, /* Data needs to be sent to the peer */
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TELNET_EV_IAC, /* Generic IAC code received */
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TELNET_EV_WILL, /* WILL option negotiation received */
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TELNET_EV_WONT, /* WONT option neogitation received */
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TELNET_EV_DO, /* DO option negotiation received */
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TELNET_EV_DONT, /* DONT option negotiation received */
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TELNET_EV_SUBNEGOTIATION, /* Sub-negotiation data received */
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TELNET_EV_COMPRESS, /* Compression has been enabled */
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TELNET_EV_ZMP, /* ZMP command has been received */
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TELNET_EV_TTYPE, /* TTYPE command has been received */
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TELNET_EV_ENVIRON, /* ENVIRON command has been received */
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TELNET_EV_MSSP, /* MSSP command has been received */
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TELNET_EV_WARNING, /* Recoverable error has occurred */
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TELNET_EV_ERROR /* Non-recoverable error has occurred */
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};
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/* Environ/MSSP command information */
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struct telnet_environ_s
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{
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unsigned char type; /* either TELNET_ENVIRON_VAR or
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* TELNET_ENVIRON_USERVAR */
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char *var; /* Name of the variable being set */
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char *value; /* value of variable being set; empty string
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* if no value */
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};
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/* State tracker -- private data structure */
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struct telnet_s; /* Forward reference */
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/* Event information */
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union telnet_event_u
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{
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/* Event type The type field will determine which of the other
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* event structure fields have been filled in. For instance, if the
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* event type is TELNET_EV_ZMP, then the zmp event field (and ONLY the
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* zmp event field) will be filled in.
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*/
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enum telnet_event_type_e type;
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/* Data event: for DATA and SEND events */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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const char *buffer; /* Byte buffer */
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size_t size; /* Number of bytes in buffer */
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} data;
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/* WARNING and ERROR events */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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const char *file; /* File the error occurred in */
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const char *func; /* Function the error occurred in */
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const char *msg; /* Error message string */
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int line; /* Line of file error occurred on */
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enum telnet_error_e errcode; /* Error code */
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} error;
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/* Command event: for IAC */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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unsigned char cmd; /* Telnet command received */
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} iac;
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/* Negotiation event: WILL, WONT, DO, DONT */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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unsigned char telopt; /* Option being negotiated */
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} neg;
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/* Subnegotiation event */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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const char *buffer; /* Data of sub-negotiation */
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size_t size; /* Number of bytes in buffer */
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unsigned char telopt; /* Option code for negotiation */
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} sub;
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/* ZMP event */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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const char **argv; /* Array of argument string */
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size_t argc; /* Number of elements in argv */
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} zmp;
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/* TTYPE event */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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unsigned char cmd; /* TELNET_TTYPE_IS or TELNET_TTYPE_SEND */
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const char *name; /* Terminal type name (IS only) */
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} ttype;
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/* COMPRESS event */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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unsigned char state; /* 1 if compression is enabled, 0 if
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* disabled */
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} compress;
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/* ENVIRON/NEW-ENVIRON event */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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const struct telnet_environ_s *values; /* Array of variable values */
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size_t size; /* Number of elements in values */
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unsigned char cmd; /* SEND, IS, or INFO */
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} envevent;
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/* MSSP event */
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struct
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{
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enum telnet_event_type_e _type; /* Alias for type */
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const struct telnet_environ_s *values; /* Array of variable values */
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size_t size; /* Number of elements in values */
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} mssp;
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};
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/* Name: telnet_event_handler_t
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*
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* Description:
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* This is the type of function that must be passed to
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* telnet_init() when creating a new telnet object. The
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* function will be invoked once for every event generated
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* by the libtelnet protocol parser.
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*
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* Input Parameters:
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* telnet The telnet object that generated the event
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* event Event structure with details about the event
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* user_data User-supplied pointer
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*/
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typedef void (*telnet_event_handler_t)(struct telnet_s *telnet,
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union telnet_event_u *event,
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void *user_data);
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/* telopt support table element; use telopt of -1 for end marker */
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struct telnet_telopt_s
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{
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short telopt; /* One of the TELOPT codes or -1 */
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unsigned char us; /* TELNET_WILL or TELNET_WONT */
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unsigned char him; /* TELNET_DO or TELNET_DONT */
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: telnet_init
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*
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* Description:
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* Initialize a telnet state tracker.
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*
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* This function initializes a new state tracker, which is used for all
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* other libtelnet functions. Each connection must have its own
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* telnet state tracker object.
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*
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* Input Parameters:
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* telopts Table of TELNET options the application supports.
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* eh Event handler function called for every event.
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* flags 0 or TELNET_FLAG_PROXY.
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* user_data Optional data pointer that will be passsed to eh.
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*
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* Returned Value:
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* Telent state tracker object.
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*
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****************************************************************************/
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struct telnet_s *telnet_init(const struct telnet_telopt_s *telopts,
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telnet_event_handler_t eh, unsigned char flags,
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void *user_data);
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/****************************************************************************
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* Name: telnet_free
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*
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* Description:
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* Free up any memory allocated by a state tracker.
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*
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* This function must be called when a telnet state tracker is no
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* longer needed (such as after the connection has been closed) to
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* release any memory resources used by the state tracker.
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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*
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****************************************************************************/
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void telnet_free(struct telnet_s *telnet);
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/****************************************************************************
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* Name: telnet_recv
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*
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* Description:
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* Push a byte buffer into the state tracker.
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*
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* Passes one or more bytes to the telnet state tracker for
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* protocol parsing. The byte buffer is most often going to be
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* the buffer that recv() was called for while handling the
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* connection.
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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* buffer Pointer to byte buffer.
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* size Number of bytes pointed to by buffer.
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*
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****************************************************************************/
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void telnet_recv(struct telnet_s *telnet, const char *buffer, size_t size);
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/****************************************************************************
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* Name: telnet_iac
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*
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* Description:
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* Send a telnet command.
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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* cmd Command to send.
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*
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****************************************************************************/
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void telnet_iac(struct telnet_s *telnet, unsigned char cmd);
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/****************************************************************************
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* Name: telnet_negotiate
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*
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* Description:
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* Send negotiation command.
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*
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* Internally, libtelnet uses RFC1143 option negotiation rules.
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* The negotiation commands sent with this function may be ignored
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* if they are determined to be redundant.
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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* cmd TELNET_WILL, TELNET_WONT, TELNET_DO, or TELNET_DONT.
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* opt One of the TELNET_TELOPT_* values.
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*
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****************************************************************************/
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void telnet_negotiate(struct telnet_s *telnet, unsigned char cmd,
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unsigned char opt);
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/****************************************************************************
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* Name: telnet_send
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*
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* Description:
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* Send non-command data (escapes IAC bytes).
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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* buffer Buffer of bytes to send.
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* size Number of bytes to send.
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*
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****************************************************************************/
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void telnet_send(struct telnet_s *telnet, const char *buffer, size_t size);
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/****************************************************************************
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* Name: telnet_begin_sb
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*
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* Description:
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* Begin a sub-negotiation command.
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*
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* Sends IAC SB followed by the telopt code. All following data sent
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* will be part of the sub-negotiation, until telnet_finish_sb() is
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* called.
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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* telopt One of the TELNET_TELOPT_* values.
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*
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****************************************************************************/
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void telnet_begin_sb(struct telnet_s *telnet, unsigned char telopt);
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/****************************************************************************
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* Name: telnet_finish_sb
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*
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* Description:
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* Finish a sub-negotiation command.
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*
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* This must be called after a call to telnet_begin_sb() to finish a
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* sub-negotiation command.
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*
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* Input Parameters:
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* telnet Telnet state tracker object.
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*
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****************************************************************************/
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#define telnet_finish_sb(telnet) telnet_iac((telnet), TELNET_SE)
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|
|
/****************************************************************************
|
|
* Name: telnet_subnegotiation
|
|
*
|
|
* Description:
|
|
* Send a complete subnegotiation buffer.
|
|
*
|
|
* Equivalent to:
|
|
* telnet_begin_sb(telnet, telopt);
|
|
* telnet_send(telnet, buffer, size);
|
|
* telnet_finish_sb(telnet);
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker format.
|
|
* telopt One of the TELNET_TELOPT_* values.
|
|
* buffer Byte buffer for sub-negotiation data.
|
|
* size Number of bytes to use for sub-negotiation data.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_subnegotiation(struct telnet_s *telnet, unsigned char telopt,
|
|
const char *buffer, size_t size);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_begin_compress2
|
|
*
|
|
* Description:
|
|
* Begin sending compressed data.
|
|
*
|
|
* This function will begein sending data using the COMPRESS2 option,
|
|
* which enables the use of zlib to compress data sent to the client.
|
|
* The client must offer support for COMPRESS2 with option negotiation,
|
|
* and zlib support must be compiled into libtelnet.
|
|
*
|
|
* Only the server may call this command.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_begin_compress2(struct telnet_s *telnet);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_printf
|
|
*
|
|
* Description:
|
|
* Send formatted data.
|
|
*
|
|
* This function is a wrapper around telnet_send(). It allows using
|
|
* printf-style formatting.
|
|
*
|
|
* Additionally, this function will translate \\r to the CR NUL construct
|
|
* and \\n with CR LF, as well as automatically escaping IAC bytes like
|
|
* telnet_send().
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* fmt Format string.
|
|
*
|
|
* Returned Value:
|
|
* Number of bytes sent.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int telnet_printf(struct telnet_s *telnet, const char *fmt, ...)
|
|
printf_like(2, 3);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_vprintf
|
|
*
|
|
* Description:
|
|
* Send formatted data with \r and \n translation in addition to IAC IAC
|
|
*
|
|
* See telnet_printf().
|
|
*
|
|
****************************************************************************/
|
|
|
|
int telnet_vprintf(struct telnet_s *telnet, const char *fmt, va_list va)
|
|
printf_like(2, 0);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_raw_printf
|
|
*
|
|
* Description:
|
|
* Send formatted data (no newline escaping).
|
|
*
|
|
* This behaves identically to telnet_printf(), except that the \\r and \\n
|
|
* characters are not translated. The IAC byte is still escaped as normal
|
|
* with telnet_send().
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* fmt Format string.
|
|
*
|
|
* Returned Value:
|
|
* Number of bytes sent.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int telnet_raw_printf(struct telnet_s *telnet, const char *fmt, ...)
|
|
printf_like(2, 3);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_raw_vprintf
|
|
*
|
|
* Description:
|
|
* Send formatted data (no newline escaping).
|
|
*
|
|
* See telnet_raw_printf().
|
|
*
|
|
****************************************************************************/
|
|
|
|
int telnet_raw_vprintf(struct telnet_s *telnet, const char *fmt, va_list va)
|
|
printf_like(2, 0);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_begin_newenviron
|
|
*
|
|
* Description:
|
|
* Begin a new set of NEW-ENVIRON values to request or send.
|
|
*
|
|
* This function will begin the sub-negotiation block for sending or
|
|
* requesting NEW-ENVIRON values.
|
|
*
|
|
* The telnet_finish_newenviron() macro must be called after this
|
|
* function to terminate the NEW-ENVIRON command.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* type One of TELNET_ENVIRON_SEND, TELNET_ENVIRON_IS, or
|
|
* TELNET_ENVIRON_INFO.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_begin_newenviron(struct telnet_s *telnet, unsigned char type);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_newenviron_value
|
|
*
|
|
* Description:
|
|
* Send a NEW-ENVIRON variable name or value.
|
|
*
|
|
* This can only be called between calls to telnet_begin_newenviron() and
|
|
* telnet_finish_newenviron().
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* type One of TELNET_ENVIRON_VAR, TELNET_ENVIRON_USERVAR, or
|
|
* TELNET_ENVIRON_VALUE.
|
|
* string Variable name or value.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_newenviron_value(struct telnet_s *telnet, unsigned char type,
|
|
const char *string);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_finish_newenviron
|
|
*
|
|
* Description:
|
|
* Finish a NEW-ENVIRON command.
|
|
*
|
|
* This must be called after a call to telnet_begin_newenviron() to finish
|
|
* a NEW-ENVIRON variable list.
|
|
*
|
|
* telnet Telnet state tracker object.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#define telnet_finish_newenviron(telnet) telnet_finish_sb((telnet))
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_ttype_send
|
|
*
|
|
* Description:
|
|
* Send the TERMINAL-TYPE SEND command.
|
|
*
|
|
* Sends the sequence IAC TERMINAL-TYPE SEND.
|
|
*
|
|
* telnet Telnet state tracker object.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_ttype_send(struct telnet_s *telnet);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_ttype_is
|
|
*
|
|
* Description:
|
|
* Send the TERMINAL-TYPE IS command.
|
|
*
|
|
* Sends the sequence IAC TERMINAL-TYPE IS "string".
|
|
*
|
|
* According to the RFC, the recipient of a TERMINAL-TYPE SEND shall
|
|
* send the next possible terminal-type the client supports. Upon sending
|
|
* the type, the client should switch modes to begin acting as the terminal
|
|
* type is just sent.
|
|
*
|
|
* The server may continue sending TERMINAL-TYPE IS until it receives a
|
|
* terminal type is understands. To indicate to the server that it has
|
|
* reached the end of the available options, the client must send the last
|
|
* terminal type a second time. When the server receives the same terminal
|
|
* type twice in a row, it knows it has seen all available terminal types.
|
|
*
|
|
* After the last terminal type is sent, if the client receives another
|
|
* TERMINAL-TYPE SEND command, it must begin enumerating the available
|
|
* terminal types from the very beginning. This allows the server to
|
|
* scan the available types for a preferred terminal type and, if none
|
|
* is found, to then ask the client to switch to an acceptable
|
|
* alternative.
|
|
*
|
|
* Note that if the client only supports a single terminal type, then
|
|
* simply sending that one type in response to every SEND will satisfy
|
|
* the behavior requirements.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* ttype Name of the terminal-type being sent.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_ttype_is(struct telnet_s *telnet, const char *ttype);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_send_zmp
|
|
*
|
|
* Description:
|
|
* Send a ZMP command.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* argc Number of ZMP commands being sent.
|
|
* argv Array of argument strings.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_send_zmp(struct telnet_s *telnet, size_t argc,
|
|
const char **argv);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_send_zmpv
|
|
*
|
|
* Description:
|
|
* Send a ZMP command.
|
|
*
|
|
* Arguments are listed out in var-args style. After the last argument, a
|
|
* NULL pointer must be passed in as a sentinel value.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_send_zmpv(struct telnet_s *telnet, ...);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_send_vzmpv
|
|
*
|
|
* Description:
|
|
* Send a ZMP command.
|
|
*
|
|
* See telnet_send_zmpv().
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_send_vzmpv(struct telnet_s *telnet, va_list va);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_begin_zmp
|
|
*
|
|
* Description:
|
|
* Begin sending a ZMP command
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* cmd The first argument (command name) for the ZMP command.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_begin_zmp(struct telnet_s *telnet, const char *cmd);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_zmp_arg
|
|
*
|
|
* Description:
|
|
* Send a ZMP command argument.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
* arg Telnet argument string.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void telnet_zmp_arg(struct telnet_s *telnet, const char *arg);
|
|
|
|
/****************************************************************************
|
|
* Name: telnet_finish_zmp
|
|
*
|
|
* Description:
|
|
* Finish a ZMP command.
|
|
*
|
|
* This must be called after a call to telnet_begin_zmp() to finish a
|
|
* ZMP argument list.
|
|
*
|
|
* Input Parameters:
|
|
* telnet Telnet state tracker object.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#define telnet_finish_zmp(telnet) telnet_finish_sb((telnet))
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* __APPS_INCLUDE_NETUTILS_TELNETC_H */
|