a00044.html

UIP完整的协议栈

<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>00113 <a name="a215"></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 name="a216"></a><a class="code" href="a00161.html#g6cda47c85ce1b58b501b44ac9cccc50e">ISO_cr</a>;
<a name="l00128"></a>00128       line[len+1] = <a name="a217"></a><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 name="a218"></a><a class="code" href="a00147.html#gdd1ab3704ecd4900eec61a6897d32dc8">uip_listen</a>(<a name="a219"></a><a class="code" href="a00148.html#g69a7a4951ff21b302267532c21ee78fc">HTONS</a>(23));
<a name="l00140"></a>00140   <a name="a220"></a><a class="code" href="a00159.html#gd58a6c7e62ae59bf7a016ded12ca2910">memb_init</a>(&amp;linemem);
<a name="l00141"></a>00141   <a name="a221"></a><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 name="a222"></a><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 name="a223"></a><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 name="a224"></a><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 name="a225"></a><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 name="a226"></a><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 name="a227"></a><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 name="a228"></a><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 name="a229"></a><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>)