lqb
/
rt-thread
mirror of https://gitee.com/rtthread/rt-thread.git


			
				
					
						
						
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<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 &lt;string.h&gt;</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>(&amp;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>(&amp;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 &lt; 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);
<a name="l00107"></a>00107     <span class="comment">/*    petsciiconv_toascii(line, TELNETD_CONF_LINELEN);*/</span>
<a name="l00108"></a>00108     sendline(line);
<a name="l00109"></a>00109   }
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00112"></a>00112 <span class="keywordtype">void</span>
<a name="l00113"></a><a class="code" href="a00107.html#f11c966b0e4f4ecaa73deb14bfb6830f">00113</a> shell_output(<span class="keywordtype">char</span> *str1, <span class="keywordtype">char</span> *str2)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115   <span class="keyword">static</span> <span class="keywordtype">unsigned</span> len;
<a name="l00116"></a>00116   <span class="keywordtype">char</span> *line;
<a name="l00117"></a>00117 
<a name="l00118"></a>00118   line = alloc_line();
<a name="l00119"></a>00119   <span class="keywordflow">if</span>(line != <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {
<a name="l00120"></a>00120     len = strlen(str1);
<a name="l00121"></a>00121     strncpy(line, str1, TELNETD_CONF_LINELEN);
<a name="l00122"></a>00122     <span class="keywordflow">if</span>(len &lt; TELNETD_CONF_LINELEN) {
<a name="l00123"></a>00123       strncpy(line + len, str2, TELNETD_CONF_LINELEN - len);
<a name="l00124"></a>00124     }
<a name="l00125"></a>00125     len = strlen(line);
<a name="l00126"></a>00126     <span class="keywordflow">if</span>(len &lt; TELNETD_CONF_LINELEN - 2) {
<a name="l00127"></a>00127       line[len] = <a class="code" href="a00161.html#g6cda47c85ce1b58b501b44ac9cccc50e">ISO_cr</a>;
<a name="l00128"></a>00128       line[len+1] = <a class="code" href="a00161.html#g3212e70c55244608ac16316888c354f0">ISO_nl</a>;
<a name="l00129"></a>00129       line[len+2] = 0;
<a name="l00130"></a>00130     }
<a name="l00131"></a>00131     <span class="comment">/*    petsciiconv_toascii(line, TELNETD_CONF_LINELEN);*/</span>
<a name="l00132"></a>00132     sendline(line);
<a name="l00133"></a>00133   }
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00136"></a>00136 <span class="keywordtype">void</span>
<a name="l00137"></a>00137 telnetd_init(<span class="keywordtype">void</span>)
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139   <a class="code" href="a00147.html#gdd1ab3704ecd4900eec61a6897d32dc8">uip_listen</a>(<a class="code" href="a00148.html#g69a7a4951ff21b302267532c21ee78fc">HTONS</a>(23));
<a name="l00140"></a>00140   <a class="code" href="a00159.html#gd58a6c7e62ae59bf7a016ded12ca2910">memb_init</a>(&amp;linemem);
<a name="l00141"></a>00141   <a class="code" href="a00107.html#69b075ef7e4d7bcf5a903d3d75baac02">shell_init</a>();
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00144"></a>00144 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00145"></a>00145 acked(<span class="keywordtype">void</span>)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147   <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
<a name="l00148"></a>00148   
<a name="l00149"></a>00149   <span class="keywordflow">while</span>(s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a> &gt; 0) {
<a name="l00150"></a>00150     dealloc_line(s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[0]);
<a name="l00151"></a>00151     <span class="keywordflow">for</span>(i = 1; i &lt; TELNETD_CONF_NUMLINES; ++i) {
<a name="l00152"></a>00152       s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[i - 1] = s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[i];
<a name="l00153"></a>00153     }
<a name="l00154"></a>00154     s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[TELNETD_CONF_NUMLINES - 1] = <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00155"></a>00155     --s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a>;
<a name="l00156"></a>00156   }
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00159"></a>00159 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00160"></a>00160 senddata(<span class="keywordtype">void</span>)
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162   <span class="keyword">static</span> <span class="keywordtype">char</span> *<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a>, *lineptr;
<a name="l00163"></a>00163   <span class="keyword">static</span> <span class="keywordtype">int</span> buflen, linelen;
<a name="l00164"></a>00164   
<a name="l00165"></a>00165   bufptr = <a class="code" href="a00150.html#g561b8eda32e059d4e7397f776268cc63">uip_appdata</a>;
<a name="l00166"></a>00166   buflen = 0;
<a name="l00167"></a>00167   <span class="keywordflow">for</span>(s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a> = 0; s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a> &lt; TELNETD_CONF_NUMLINES &amp;&amp;
<a name="l00168"></a>00168         s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a>] != <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> ; ++s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a>) {
<a name="l00169"></a>00169     lineptr = s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[s.<a class="code" href="a00086.html#d85fc90c30d1fc37c63c4844be5fe09d">numsent</a>];
<a name="l00170"></a>00170     linelen = strlen(lineptr);
<a name="l00171"></a>00171     <span class="keywordflow">if</span>(linelen &gt; TELNETD_CONF_LINELEN) {
<a name="l00172"></a>00172       linelen = TELNETD_CONF_LINELEN;
<a name="l00173"></a>00173     }
<a name="l00174"></a>00174     <span class="keywordflow">if</span>(buflen + linelen &lt; <a class="code" href="a00147.html#gb5fecbc62edd128012cea0f47b57ab9f">uip_mss</a>()) {
<a name="l00175"></a>00175       memcpy(bufptr, lineptr, linelen);
<a name="l00176"></a>00176       bufptr += linelen;
<a name="l00177"></a>00177       buflen += linelen;
<a name="l00178"></a>00178     } <span class="keywordflow">else</span> {
<a name="l00179"></a>00179       <span class="keywordflow">break</span>;
<a name="l00180"></a>00180     }
<a name="l00181"></a>00181   }
<a name="l00182"></a>00182   <a class="code" href="a00147.html#g04b053a623aac7cd4195157d470661b3">uip_send</a>(<a class="code" href="a00150.html#g561b8eda32e059d4e7397f776268cc63">uip_appdata</a>, buflen);
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00185"></a>00185 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00186"></a>00186 closed(<span class="keywordtype">void</span>)
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188   <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
<a name="l00189"></a>00189   
<a name="l00190"></a>00190   <span class="keywordflow">for</span>(i = 0; i &lt; TELNETD_CONF_NUMLINES; ++i) {
<a name="l00191"></a>00191     <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="l00192"></a>00192       dealloc_line(s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[i]);
<a name="l00193"></a>00193     }
<a name="l00194"></a>00194   }
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00197"></a>00197 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00198"></a>00198 get_char(<a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> c)
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200   <span class="keywordflow">if</span>(c == <a class="code" href="a00161.html#g6cda47c85ce1b58b501b44ac9cccc50e">ISO_cr</a>) {
<a name="l00201"></a>00201     <span class="keywordflow">return</span>;
<a name="l00202"></a>00202   }
<a name="l00203"></a>00203   
<a name="l00204"></a>00204   s.<a class="code" href="a00086.html#54a466311575a727830a92a6c3621cb2">buf</a>[(int)s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a>] = c;
<a name="l00205"></a>00205   <span class="keywordflow">if</span>(s.<a class="code" href="a00086.html#54a466311575a727830a92a6c3621cb2">buf</a>[(<span class="keywordtype">int</span>)s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a>] == <a class="code" href="a00161.html#g3212e70c55244608ac16316888c354f0">ISO_nl</a> ||
<a name="l00206"></a>00206      s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a> == <span class="keyword">sizeof</span>(s.<a class="code" href="a00086.html#54a466311575a727830a92a6c3621cb2">buf</a>) - 1) {
<a name="l00207"></a>00207     <span class="keywordflow">if</span>(s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a> &gt; 0) {
<a name="l00208"></a>00208       s.<a class="code" href="a00086.html#54a466311575a727830a92a6c3621cb2">buf</a>[(int)s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a>] = 0;
<a name="l00209"></a>00209       <span class="comment">/*      petsciiconv_topetscii(s.buf, TELNETD_CONF_LINELEN);*/</span>
<a name="l00210"></a>00210     }
<a name="l00211"></a>00211     <a class="code" href="a00107.html#86beee1f69d05b16022dfb430470e9ce">shell_input</a>(s.<a class="code" href="a00086.html#54a466311575a727830a92a6c3621cb2">buf</a>);
<a name="l00212"></a>00212     s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a> = 0;
<a name="l00213"></a>00213   } <span class="keywordflow">else</span> {
<a name="l00214"></a>00214     ++s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a>;
<a name="l00215"></a>00215   }
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00218"></a>00218 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00219"></a>00219 sendopt(<a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> option, <a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> value)
<a name="l00220"></a>00220 {
<a name="l00221"></a>00221   <span class="keywordtype">char</span> *line;
<a name="l00222"></a>00222   line = alloc_line();
<a name="l00223"></a>00223   <span class="keywordflow">if</span>(line != <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {
<a name="l00224"></a>00224     line[0] = TELNET_IAC;
<a name="l00225"></a>00225     line[1] = option;
<a name="l00226"></a>00226     line[2] = value;
<a name="l00227"></a>00227     line[3] = 0;
<a name="l00228"></a>00228     sendline(line);
<a name="l00229"></a>00229   }
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00232"></a>00232 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00233"></a>00233 newdata(<span class="keywordtype">void</span>)
<a name="l00234"></a>00234 {
<a name="l00235"></a>00235   <a class="code" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> len;
<a name="l00236"></a>00236   <a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> c;
<a name="l00237"></a>00237   <span class="keywordtype">char</span> *dataptr;
<a name="l00238"></a>00238     
<a name="l00239"></a>00239   
<a name="l00240"></a>00240   len = <a class="code" href="a00147.html#g1a1bc437c09ddef238abab41d77c3177">uip_datalen</a>();
<a name="l00241"></a>00241   dataptr = (<span class="keywordtype">char</span> *)<a class="code" href="a00150.html#g561b8eda32e059d4e7397f776268cc63">uip_appdata</a>;
<a name="l00242"></a>00242   
<a name="l00243"></a>00243   <span class="keywordflow">while</span>(len &gt; 0 &amp;&amp; s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a> &lt; <span class="keyword">sizeof</span>(s.<a class="code" href="a00086.html#54a466311575a727830a92a6c3621cb2">buf</a>)) {
<a name="l00244"></a>00244     c = *dataptr;
<a name="l00245"></a>00245     ++dataptr;
<a name="l00246"></a>00246     --len;
<a name="l00247"></a>00247     <span class="keywordflow">switch</span>(s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a>) {
<a name="l00248"></a>00248     <span class="keywordflow">case</span> STATE_IAC:
<a name="l00249"></a>00249       <span class="keywordflow">if</span>(c == TELNET_IAC) {
<a name="l00250"></a>00250         get_char(c);
<a name="l00251"></a>00251         s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00252"></a>00252       } <span class="keywordflow">else</span> {
<a name="l00253"></a>00253         <span class="keywordflow">switch</span>(c) {
<a name="l00254"></a>00254         <span class="keywordflow">case</span> TELNET_WILL:
<a name="l00255"></a>00255           s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_WILL;
<a name="l00256"></a>00256           <span class="keywordflow">break</span>;
<a name="l00257"></a>00257         <span class="keywordflow">case</span> TELNET_WONT:
<a name="l00258"></a>00258           s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_WONT;
<a name="l00259"></a>00259           <span class="keywordflow">break</span>;
<a name="l00260"></a>00260         <span class="keywordflow">case</span> TELNET_DO:
<a name="l00261"></a>00261           s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_DO;
<a name="l00262"></a>00262           <span class="keywordflow">break</span>;
<a name="l00263"></a>00263         <span class="keywordflow">case</span> TELNET_DONT:
<a name="l00264"></a>00264           s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_DONT;
<a name="l00265"></a>00265           <span class="keywordflow">break</span>;
<a name="l00266"></a>00266         <span class="keywordflow">default</span>:
<a name="l00267"></a>00267           s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00268"></a>00268           <span class="keywordflow">break</span>;
<a name="l00269"></a>00269         }
<a name="l00270"></a>00270       }
<a name="l00271"></a>00271       <span class="keywordflow">break</span>;
<a name="l00272"></a>00272     <span class="keywordflow">case</span> STATE_WILL:
<a name="l00273"></a>00273       <span class="comment">/* Reply with a DONT */</span>
<a name="l00274"></a>00274       sendopt(TELNET_DONT, c);
<a name="l00275"></a>00275       s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00276"></a>00276       <span class="keywordflow">break</span>;
<a name="l00277"></a>00277       
<a name="l00278"></a>00278     <span class="keywordflow">case</span> STATE_WONT:
<a name="l00279"></a>00279       <span class="comment">/* Reply with a DONT */</span>
<a name="l00280"></a>00280       sendopt(TELNET_DONT, c);
<a name="l00281"></a>00281       s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00282"></a>00282       <span class="keywordflow">break</span>;
<a name="l00283"></a>00283     <span class="keywordflow">case</span> STATE_DO:
<a name="l00284"></a>00284       <span class="comment">/* Reply with a WONT */</span>
<a name="l00285"></a>00285       sendopt(TELNET_WONT, c);
<a name="l00286"></a>00286       s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00287"></a>00287       <span class="keywordflow">break</span>;
<a name="l00288"></a>00288     <span class="keywordflow">case</span> STATE_DONT:
<a name="l00289"></a>00289       <span class="comment">/* Reply with a WONT */</span>
<a name="l00290"></a>00290       sendopt(TELNET_WONT, c);
<a name="l00291"></a>00291       s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00292"></a>00292       <span class="keywordflow">break</span>;
<a name="l00293"></a>00293     <span class="keywordflow">case</span> STATE_NORMAL:
<a name="l00294"></a>00294       <span class="keywordflow">if</span>(c == TELNET_IAC) {
<a name="l00295"></a>00295         s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_IAC;
<a name="l00296"></a>00296       } <span class="keywordflow">else</span> {
<a name="l00297"></a>00297         get_char(c);
<a name="l00298"></a>00298       }
<a name="l00299"></a>00299       <span class="keywordflow">break</span>;
<a name="l00300"></a>00300     }
<a name="l00301"></a>00301 
<a name="l00302"></a>00302     
<a name="l00303"></a>00303   }
<a name="l00304"></a>00304   
<a name="l00305"></a>00305 }
<a name="l00306"></a>00306 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00307"></a>00307 <span class="keywordtype">void</span>
<a name="l00308"></a>00308 telnetd_appcall(<span class="keywordtype">void</span>)
<a name="l00309"></a>00309 {
<a name="l00310"></a>00310   <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
<a name="l00311"></a>00311   <span class="keywordflow">if</span>(<a class="code" href="a00147.html#gdb971fb1525d0c5002f52125b05f3218">uip_connected</a>()) {
<a name="l00312"></a>00312     <span class="comment">/*    tcp_markconn(uip_conn, &amp;s);*/</span>
<a name="l00313"></a>00313     <span class="keywordflow">for</span>(i = 0; i &lt; TELNETD_CONF_NUMLINES; ++i) {
<a name="l00314"></a>00314       s.<a class="code" href="a00086.html#cca775e46d4405b7775b328f7694f7e7">lines</a>[i] = <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00315"></a>00315     }
<a name="l00316"></a>00316     s.<a class="code" href="a00086.html#5eced097547fd3fac4ba2a255493d921">bufptr</a> = 0;
<a name="l00317"></a>00317     s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00318"></a>00318 
<a name="l00319"></a>00319     <a class="code" href="a00107.html#d1f18f739da7703628c3663209463a0d">shell_start</a>();
<a name="l00320"></a>00320   }
<a name="l00321"></a>00321 
<a name="l00322"></a>00322   <span class="keywordflow">if</span>(s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> == STATE_CLOSE) {
<a name="l00323"></a>00323     s.<a class="code" href="a00086.html#41bf109b6a45328d5744c0a76563fb6c">state</a> = STATE_NORMAL;
<a name="l00324"></a>00324     <a class="code" href="a00147.html#g61db1dcb7c760e4dd5d60bf4e5576dca">uip_close</a>();
<a name="l00325"></a>00325     <span class="keywordflow">return</span>;
<a name="l00326"></a>00326   }
<a name="l00327"></a>00327   
<a name="l00328"></a>00328   <span class="keywordflow">if</span>(<a class="code" href="a00147.html#gef6c4140c632b6a406779342cf3b6eb6">uip_closed</a>() ||
<a name="l00329"></a>00329      <a class="code" href="a00147.html#gfbd5fc486dfdf6bf6fc9db52b1f418c4">uip_aborted</a>() ||
<a name="l00330"></a>00330      <a class="code" href="a00147.html#g7b2ac4b18bd2ac3912fe67b3b17158c3">uip_timedout</a>()) {
<a name="l00331"></a>00331     closed();
<a name="l00332"></a>00332   }
<a name="l00333"></a>00333   
<a name="l00334"></a>00334   <span class="keywordflow">if</span>(<a class="code" href="a00147.html#gde6634974418e3240c212b9b16864368">uip_acked</a>()) {
<a name="l00335"></a>00335     acked();
<a name="l00336"></a>00336   }
<a name="l00337"></a>00337   
<a name="l00338"></a>00338   <span class="keywordflow">if</span>(<a class="code" href="a00147.html#g26a14b8dae3f861830af9e7cf1e03725">uip_newdata</a>()) {
<a name="l00339"></a>00339     newdata();
<a name="l00340"></a>00340   }
<a name="l00341"></a>00341   
<a name="l00342"></a>00342   <span class="keywordflow">if</span>(<a class="code" href="a00147.html#ga8933ad15a2e2947dae4a5cff50e6007">uip_rexmit</a>() ||
<a name="l00343"></a>00343      <a class="code" href="a00147.html#g26a14b8dae3f861830af9e7cf1e03725">uip_newdata</a>() ||
<a name="l00344"></a>00344      <a class="code" href="a00147.html#gde6634974418e3240c212b9b16864368">uip_acked</a>() ||
<a name="l00345"></a>00345      <a class="code" href="a00147.html#gdb971fb1525d0c5002f52125b05f3218">uip_connected</a>() ||
<a name="l00346"></a>00346      <a class="code" href="a00147.html#g58bb90796c1cdad3aac2ecf44d87b20e">uip_poll</a>()) {
<a name="l00347"></a>00347     senddata();
<a name="l00348"></a>00348   }
<a name="l00349"></a>00349 }
<a name="l00350"></a>00350 <span class="comment">/*---------------------------------------------------------------------------*/</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Jun 12 10:23:01 2006 for uIP 1.0 by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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</html>