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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>uIP 1.0: apps/telnetd/telnetd.c Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="classes.html"><span>Data Structures</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> <li><a href="examples.html"><span>Examples</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul></div><h1>apps/telnetd/telnetd.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span><a name="l00002"></a>00002 <span class="comment"> * Copyright (c) 2003, Adam Dunkels.</span><a name="l00003"></a>00003 <span class="comment"> * All rights reserved.</span><a name="l00004"></a>00004 <span class="comment"> *</span><a name="l00005"></a>00005 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span><a name="l00006"></a>00006 <span class="comment"> * modification, are permitted provided that the following conditions</span><a name="l00007"></a>00007 <span class="comment"> * are met:</span><a name="l00008"></a>00008 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span><a name="l00009"></a>00009 <span class="comment"> * notice, this list of conditions and the following disclaimer.</span><a name="l00010"></a>00010 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span><a name="l00011"></a>00011 <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span><a name="l00012"></a>00012 <span class="comment"> * documentation and/or other materials provided with the distribution.</span><a name="l00013"></a>00013 <span class="comment"> * 3. The name of the author may not be used to endorse or promote</span><a name="l00014"></a>00014 <span class="comment"> * products derived from this software without specific prior</span><a name="l00015"></a>00015 <span class="comment"> * written permission.</span><a name="l00016"></a>00016 <span class="comment"> *</span><a name="l00017"></a>00017 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS</span><a name="l00018"></a>00018 <span class="comment"> * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED</span><a name="l00019"></a>00019 <span class="comment"> * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span><a name="l00020"></a>00020 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY</span><a name="l00021"></a>00021 <span class="comment"> * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span><a name="l00022"></a>00022 <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE</span><a name="l00023"></a>00023 <span class="comment"> * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span><a name="l00024"></a>00024 <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,</span><a name="l00025"></a>00025 <span class="comment"> * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</span><a name="l00026"></a>00026 <span class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</span><a name="l00027"></a>00027 <span class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span><a name="l00028"></a>00028 <span class="comment"> *</span><a name="l00029"></a>00029 <span class="comment"> * This file is part of the uIP TCP/IP stack</span><a name="l00030"></a>00030 <span class="comment"> *</span><a name="l00031"></a>00031 <span class="comment"> * $Id: telnetd.c,v 1.2 2006/06/07 09:43:54 adam Exp $</span><a name="l00032"></a>00032 <span class="comment"> *</span><a name="l00033"></a>00033 <span class="comment"> */</span><a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="preprocessor">#include "<a class="code" href="a00136.html">uip.h</a>"</span><a name="l00036"></a>00036 <span class="preprocessor">#include "telnetd.h"</span><a name="l00037"></a>00037 <span class="preprocessor">#include "<a class="code" href="a00121.html">memb.h</a>"</span><a name="l00038"></a>00038 <span class="preprocessor">#include "<a class="code" href="a00107.html">shell.h</a>"</span><a name="l00039"></a>00039 <a name="l00040"></a>00040 <span class="preprocessor">#include <string.h></span><a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="preprocessor">#define ISO_nl 0x0a</span><a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#define ISO_cr 0x0d</span><a name="l00044"></a>00044 <span class="preprocessor"></span><a name="l00045"></a>00045 <span class="keyword">struct </span>telnetd_line {<a name="l00046"></a>00046 <span class="keywordtype">char</span> line[TELNETD_CONF_LINELEN];<a name="l00047"></a>00047 };<a name="l00048"></a>00048 <a class="code" href="a00159.html#gf31774d02a69fd3f1c2b282454438cba">MEMB</a>(linemem, <span class="keyword">struct</span> telnetd_line, TELNETD_CONF_NUMLINES);<a name="l00049"></a>00049 <a name="l00050"></a>00050 <span class="preprocessor">#define STATE_NORMAL 0</span><a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#define STATE_IAC 1</span><a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor">#define STATE_WILL 2</span><a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#define STATE_WONT 3</span><a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor">#define STATE_DO 4</span><a name="l00055"></a>00055 <span class="preprocessor"></span><span class="preprocessor">#define STATE_DONT 5</span><a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#define STATE_CLOSE 6</span><a name="l00057"></a>00057 <span class="preprocessor"></span><a name="l00058"></a>00058 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="a00086.html">telnetd_state</a> s;<a name="l00059"></a>00059 <a name="l00060"></a>00060 <span class="preprocessor">#define TELNET_IAC 255</span><a name="l00061"></a>00061 <span class="preprocessor"></span><span class="preprocessor">#define TELNET_WILL 251</span><a name="l00062"></a>00062 <span class="preprocessor"></span><span class="preprocessor">#define TELNET_WONT 252</span><a name="l00063"></a>00063 <span class="preprocessor"></span><span class="preprocessor">#define TELNET_DO 253</span><a name="l00064"></a>00064 <span class="preprocessor"></span><span class="preprocessor">#define TELNET_DONT 254</span><a name="l00065"></a>00065 <span class="preprocessor"></span><span class="comment">/*---------------------------------------------------------------------------*/</span><a name="l00066"></a>00066 <span class="keyword">static</span> <span class="keywordtype">char</span> *<a name="l00067"></a>00067 alloc_line(<span class="keywordtype">void</span>)<a name="l00068"></a>00068 {<a name="l00069"></a>00069 <span class="keywordflow">return</span> <a class="code" href="a00159.html#gfe5e93119035e14cc485760a176249ba">memb_alloc</a>(&linemem);<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <span class="comment">/*---------------------------------------------------------------------------*/</span><a name="l00072"></a>00072 <span class="keyword">static</span> <span class="keywordtype">void</span><a name="l00073"></a>00073 dealloc_line(<span class="keywordtype">char</span> *line)<a name="l00074"></a>00074 {<a name="l00075"></a>00075 <a class="code" href="a00159.html#gceb952d27de8125d5146ac0bee325b8f">memb_free</a>(&linemem, line);<a name="l00076"></a>00076 }<a name="l00077"></a>00077 <span class="comment">/*---------------------------------------------------------------------------*/</span><a name="l00078"></a>00078 <span class="keywordtype">void</span><a name="l00079"></a><a class="code" href="a00107.html#984c4a8b65a3cb35460b073a40568c25">00079</a> shell_quit(<span class="keywordtype">char</span> *str)<a name="l00080"></a>00080 {<a name="l00081"></a>00081 s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_CLOSE;<a name="l00082"></a>00082 }<a name="l00083"></a>00083 <span class="comment">/*---------------------------------------------------------------------------*/</span><a name="l00084"></a>00084 <span class="keyword">static</span> <span class="keywordtype">void</span><a name="l00085"></a>00085 sendline(<span class="keywordtype">char</span> *line)<a name="l00086"></a>00086 {<a name="l00087"></a>00087 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;<a name="l00088"></a>00088 <a name="l00089"></a>00089 <span class="keywordflow">for</span>(i = 0; i < TELNETD_CONF_NUMLINES; ++i) {<a name="l00090"></a>00090 <span class="keywordflow">if</span>(s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[i] == <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {<a name="l00091"></a>00091 s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[i] = line;<a name="l00092"></a>00092 <span class="keywordflow">break</span>;<a name="l00093"></a>00093 }<a name="l00094"></a>00094 }<a name="l00095"></a>00095 <span class="keywordflow">if</span>(i == TELNETD_CONF_NUMLINES) {<a name="l00096"></a>00096 dealloc_line(line);<a name="l00097"></a>00097 }<a name="l00098"></a>00098 }<a name="l00099"></a>00099 <span class="comment">/*---------------------------------------------------------------------------*/</span><a name="l00100"></a>00100 <span class="keywordtype">void</span><a name="l00101"></a><a class="code" href="a00107.html#123c95a7bb55143cabba92446ce8f513">00101</a> shell_prompt(<span class="keywordtype">char</span> *str)<a name="l00102"></a>00102 {<a name="l00103"></a>00103 <span class="keywordtype">char</span> *line;<a name="l00104"></a>00104 line = alloc_line();<a name="l00105"></a>00105 <span class="keywordflow">if</span>(line != <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {<a name="l00106"></a>00106 strncpy(line, str, TELNETD_CONF_LINELEN);⌨️ 快捷键说明
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