pop3__client_8c-source.html

Freescale mcu OpenTCP-1.0.4.doc.html.zip 文档

00173         pop3_client.<a class="code" href="structpop3c__struct.html#m6">msgtotal</a> = 0;
00174         pop3_client.<a class="code" href="structpop3c__struct.html#m7">curmsgindex</a> = 0;
00175         pop3_client.<a class="code" href="structpop3c__struct.html#m8">curmsgtotlen</a> = 0;
00176         pop3_client.<a class="code" href="structpop3c__struct.html#m9">curmsghlen</a> = 0;
00177         pop3_client.<a class="code" href="structpop3c__struct.html#m10">headerbuf</a>[0] = <span class="charliteral">'\0'</span>;
00178         pop3_client.<a class="code" href="structpop3c__struct.html#m11">charsinheaderbuf</a> = 0;
00179         pop3_client.<a class="code" href="structpop3c__struct.html#m12">from</a>[0] = <span class="charliteral">'\0'</span>;
00180         pop3_client.<a class="code" href="structpop3c__struct.html#m13">subject</a>[0] = <span class="charliteral">'\0'</span>;
00181         
00182         <a class="code" href="pop3__client_8c.html#a0">pop3c_init_done</a> = 0x01;                         <span class="comment">/* We are initialized now       */</span>
00183 
00184 }
<a name="l00194"></a><a class="code" href="pop3__client_8c.html#a4">00194</a> UINT8 <a class="code" href="pop3__client_8c.html#a33">pop3c_getstate</a> (<span class="keywordtype">void</span>){
00195         <span class="keywordflow">return</span>(pop3_client.<a class="code" href="structpop3c__struct.html#m0">state</a>);
00196         
00197 }
00198 
00199 <span class="comment">/********************************************************************************</span>
00200 <span class="comment">Function:               pop3c_eventlistener</span>
00201 <span class="comment"></span>
00202 <span class="comment">Parameters:             INT8 cbhandle - handle to TCP socket where event is coming from </span>
00203 <span class="comment">                                UINT8 event - type of event</span>
00204 <span class="comment">                                UINT32 par1 - parameter the meaning of depends on event</span>
00205 <span class="comment">                                UINT32 par2 - parameter the meaning of depends on event</span>
00206 <span class="comment">                                </span>
00207 <span class="comment">Return val:             INT32 - depends on event but usually (-1) is error of some</span>
00208 <span class="comment">                                                kind and positive reply means OK</span>
00209 <span class="comment">                                </span>
00210 <span class="comment">Date:                   21.8.2002</span>
00211 <span class="comment"></span>
00212 <span class="comment">Desc:                   This function is given to TCP socket as function pointer to be</span>
00213 <span class="comment">                                used by TCP engine to make callbacks to inform about events</span>
00214 <span class="comment">                                on TCP e.g. arriving data. Main functionality of this function </span>
00215 <span class="comment">                                is to parse data from TCP to detect POP3 server reply commands,</span>
00216 <span class="comment">                                handling out retransmissions and making state changes</span>
00217 <span class="comment">*********************************************************************************/</span>
00218 
00219 
00220 INT32 pop3c_eventlistener (INT8 cbhandle, UINT8 event, UINT32 par1, UINT32 par2)
00221 {
00222         <span class="comment">/* This function is called by TCP stack to inform about events  */</span>
00223         
00224         UINT8 cmd;
00225         UINT16 i;
00226         <span class="keyword">static</span> UINT16 len;
00227         <span class="keyword">static</span> UINT16 match;
00228         <span class="keyword">static</span> UINT8  end_detect;
00229         UINT8 ch;
00230         UINT8 j;
00231         UINT8 endbuf[4];
00232                 
00233         
00234         <span class="keywordflow">if</span>( cbhandle != pop3_client.<a class="code" href="structpop3c__struct.html#m3">sochandle</a>)          <span class="comment">/* Not our handle       */</span>
00235                 <span class="keywordflow">return</span>(-1);
00236         
00237         <span class="keywordflow">switch</span>( event ) {
00238         
00239                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a54">TCP_EVENT_CONREQ</a>:
00240                 
00241                         <span class="comment">/* We don't allow incoming connections  */</span>
00242                         
00243                         <span class="keywordflow">return</span>(-1);
00244         
00245                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a57">TCP_EVENT_ABORT</a>:
00246                 
00247                         <span class="keywordflow">if</span>(pop3_client.<a class="code" href="structpop3c__struct.html#m0">state</a> &gt; <a class="code" href="pop3__client_8h.html#a4">POP3C_CLOSED</a>) {
00248                                 <span class="comment">/* Inform application   */</span>      
00249                                 <a class="code" href="pop3c__callbacks_8c.html#a47">pop3c_error</a>();  
00250                         }
00251                 
00252                         pop3c_changestate(<a class="code" href="pop3__client_8h.html#a4">POP3C_CLOSED</a>);
00253                         pop3_client.<a class="code" href="structpop3c__struct.html#m5">unacked</a> = 0;
00254                         
00255                         <span class="keywordflow">return</span>(1);
00256                 
00257                         <span class="keywordflow">break</span>;
00258                 
00259                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a55">TCP_EVENT_CONNECTED</a>:
00260                 
00261                         <span class="keywordflow">if</span>(pop3_client.<a class="code" href="structpop3c__struct.html#m0">state</a> == <a class="code" href="pop3__client_8h.html#a6">POP3C_CONNECTIONOPEN_SENT</a>) {
00262                                 DEBUGOUT(<span class="stringliteral">"POP3 TCP connection opened\r\n"</span>);
00263                                 pop3c_changestate(<a class="code" href="pop3__client_8h.html#a7">POP3C_CONNECTION_OPENED</a>);
00264                                 pop3_client.<a class="code" href="structpop3c__struct.html#m5">unacked</a> = 0;
00265                                 <span class="keywordflow">return</span>(-1);
00266                         }
00267                                 
00268                         <span class="keywordflow">break</span>;
00269                         
00270                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a56">TCP_EVENT_CLOSE</a>:
00271                 
00272                         pop3c_changestate(<a class="code" href="pop3__client_8h.html#a4">POP3C_CLOSED</a>);
00273                         pop3_client.<a class="code" href="structpop3c__struct.html#m5">unacked</a> = 0;
00274                         <span class="keywordflow">return</span>(1);
00275                 
00276                         <span class="keywordflow">break</span>;
00277                         
00278                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a58">TCP_EVENT_ACK</a>:
00279                 
00280                         <span class="comment">/* Our message is acked */</span>
00281                         
00282                         pop3_client.<a class="code" href="structpop3c__struct.html#m5">unacked</a> = 0;
00283                         
00284                         <span class="keywordflow">break</span>;
00285                         
00286                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a60">TCP_EVENT_DATA</a>:
00287                 
00288                         <span class="comment">/* Do we have unacked data?     */</span>
00289                         
00290                         <span class="keywordflow">if</span>(pop3_client.<a class="code" href="structpop3c__struct.html#m5">unacked</a>)
00291                                 <span class="keywordflow">return</span>(-1);
00292                 
00293                         <span class="comment">/* Get reply from server        */</span>
00294                         
00295                         <span class="keywordflow">if</span>(par1 &lt; 3)                                    <span class="comment">/* Long enough? */</span>
00296                                 <span class="keywordflow">return</span>(-1);
00297                 
00298                         <span class="comment">/* Get command                          */</span>
00299                         
00300                         <a class="code" href="system_8h.html#a14">NETWORK_RECEIVE_INITIALIZE</a>(received_tcp_packet.buf_index);
00301                         cmd = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00302                         <a class="code" href="system_8h.html#a14">NETWORK_RECEIVE_INITIALIZE</a>(received_tcp_packet.buf_index);
00303 
00304                         <span class="keywordflow">switch</span>(pop3_client.<a class="code" href="structpop3c__struct.html#m0">state</a>) {
00305                                 
00306                                 <span class="keywordflow">case</span> <a class="code" href="pop3__client_8h.html#a7">POP3C_CONNECTION_OPENED</a>:
00307                                 
00308                                         <span class="keywordflow">if</span>(cmd == POP3C_OK)     {
00309                                                 DEBUGOUT(<span class="stringliteral">"POP3 Server is ready\r\n"</span>);
00310                                                 pop3c_changestate(<a class="code" href="pop3__client_8h.html#a8">POP3C_SERVER_READY</a>);
00311                                                 <span class="keywordflow">return</span>(1);
00312                                         }
00313                                         
00314                                         <span class="keywordflow">break</span>;
00315