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<h1>src/http/request_parser.c</h1>  </div>
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<div class="contents">
<a href="request__parser_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00002"></a>00002 <span class="preprocessor">#include &lt;string.h&gt;</span>
<a name="l00003"></a>00003 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include &lt;unistd.h&gt;</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include &lt;ctype.h&gt;</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include &lt;sys/types.h&gt;</span>
<a name="l00008"></a>00008 
<a name="l00009"></a>00009 <span class="preprocessor">#include &quot;class.h&quot;</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include &quot;http/request_parser.h&quot;</span>
<a name="l00011"></a>00011 <span class="preprocessor">#include &quot;interface/class.h&quot;</span>
<a name="l00012"></a>00012 <span class="preprocessor">#include &quot;interface/stream_reader.h&quot;</span>
<a name="l00013"></a>00013 <span class="preprocessor">#include &quot;http/request.h&quot;</span>
<a name="l00014"></a>00014 <span class="preprocessor">#include &quot;http/request_queue.h&quot;</span>
<a name="l00015"></a>00015 
<a name="l00016"></a>00016 <span class="keyword">static</span>
<a name="l00017"></a>00017 <span class="keywordtype">void</span>
<a name="l00018"></a>00018 httpRequestParserParse(<a class="code" href="structHttpRequestParser.html">HttpRequestParser</a>);
<a name="l00019"></a>00019 
<a name="l00020"></a>00020 <span class="keyword">static</span>
<a name="l00021"></a>00021 <span class="keywordtype">void</span>
<a name="l00022"></a>00022 ctor(<span class="keywordtype">void</span> * _this, va_list * params)
<a name="l00023"></a>00023 {
<a name="l00024"></a>00024         <a class="code" href="structHttpRequestParser.html">HttpRequestParser</a> <span class="keyword">this</span> = _this;
<a name="l00025"></a>00025 
<a name="l00026"></a>00026         this-&gt;request_queue = <span class="keyword">new</span>(<a class="code" href="structHttpRequestQueue.html">HttpRequestQueue</a>);
<a name="l00027"></a>00027 
<a name="l00028"></a>00028         this-&gt;buffer = malloc(<a class="code" href="request__parser_8h.html#ad645c7940041e8d57b5557a197e133fb">HTTP_REQUEST_PARSER_READ_CHUNK</a>);
<a name="l00029"></a>00029         this-&gt;buffer[0] = 0;
<a name="l00030"></a>00030 }
<a name="l00031"></a>00031 
<a name="l00032"></a>00032 <span class="keyword">static</span>
<a name="l00033"></a>00033 <span class="keywordtype">void</span>
<a name="l00034"></a>00034 dtor(<span class="keywordtype">void</span> * _this)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036         <a class="code" href="structHttpRequestParser.html">HttpRequestParser</a> <span class="keyword">this</span> = _this;
<a name="l00037"></a>00037 
<a name="l00038"></a>00038         free(this-&gt;buffer);
<a name="l00039"></a>00039         <span class="keyword">delete</span>(&amp;(this-&gt;request_queue));
<a name="l00040"></a>00040 } 
<a name="l00041"></a>00041 
<a name="l00042"></a>00042 <span class="keyword">static</span>
<a name="l00043"></a>00043 <span class="keywordtype">void</span>
<a name="l00044"></a>00044 _clone(<span class="keywordtype">void</span> * _this, <span class="keywordtype">void</span> * _base)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046         <a class="code" href="structHttpRequestParser.html">HttpRequestParser</a> <span class="keyword">this</span> = _this;
<a name="l00047"></a>00047         <a class="code" href="structHttpRequestParser.html">HttpRequestParser</a> base = _base;
<a name="l00048"></a>00048         <span class="keywordtype">size_t</span>            chunks;
<a name="l00049"></a>00049 
<a name="l00053"></a>00053         this-&gt;request_queue = <span class="keyword">new</span>(<a class="code" href="structHttpRequestQueue.html">HttpRequestQueue</a>);
<a name="l00054"></a>00054         this-&gt;buffer_used   = base-&gt;<a class="code" href="structHttpRequestParser.html#a8c978afebc23adea883f35699d0b1421">buffer_used</a>;
<a name="l00055"></a>00055 
<a name="l00056"></a>00056         chunks = this-&gt;buffer_used / <a class="code" href="request__parser_8h.html#ad645c7940041e8d57b5557a197e133fb">HTTP_REQUEST_PARSER_READ_CHUNK</a>;
<a name="l00057"></a>00057         chunks++;
<a name="l00058"></a>00058 
<a name="l00059"></a>00059         this-&gt;buffer = malloc(chunks * <a class="code" href="request__parser_8h.html#ad645c7940041e8d57b5557a197e133fb">HTTP_REQUEST_PARSER_READ_CHUNK</a>);
<a name="l00060"></a>00060         memcpy(this-&gt;buffer, base-&gt;<a class="code" href="structHttpRequestParser.html#a6c93a89e984f6ee2c7f52bfa281c2f94">buffer</a>, this-&gt;buffer_used);
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 
<a name="l00063"></a>00063 <span class="keyword">static</span>
<a name="l00064"></a>00064 <span class="keywordtype">size_t</span>
<a name="l00065"></a>00065 get_data(<span class="keywordtype">void</span> * _this, <span class="keywordtype">int</span> fd)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067         <a class="code" href="structHttpRequestParser.html">HttpRequestParser</a> <span class="keyword">this</span> = _this;
<a name="l00068"></a>00068         <span class="keywordtype">size_t</span>            remaining, chunks;
<a name="l00069"></a>00069         <span class="keywordtype">char</span>              buffer[1024];
<a name="l00070"></a>00070 
<a name="l00071"></a>00071         <span class="keywordtype">size_t</span> size = read(fd, buffer, 1024);
<a name="l00072"></a>00072 
<a name="l00073"></a>00073         <span class="keywordflow">if</span> (0 &lt; size) {
<a name="l00074"></a>00074                 remaining = this-&gt;buffer_used % <a class="code" href="request__parser_8h.html#ad645c7940041e8d57b5557a197e133fb">HTTP_REQUEST_PARSER_READ_CHUNK</a>;
<a name="l00075"></a>00075                 chunks    = this-&gt;buffer_used / <a class="code" href="request__parser_8h.html#ad645c7940041e8d57b5557a197e133fb">HTTP_REQUEST_PARSER_READ_CHUNK</a>;
<a name="l00076"></a>00076 
<a name="l00085"></a>00085                 chunks++;
<a name="l00086"></a>00086 
<a name="l00087"></a>00087                 <span class="keywordflow">if</span> (size &gt;= remaining) {
<a name="l00088"></a>00088                         this-&gt;buffer =
<a name="l00089"></a>00089                                 realloc(this-&gt;buffer, chunks * <a class="code" href="request__parser_8h.html#ad645c7940041e8d57b5557a197e133fb">HTTP_REQUEST_PARSER_READ_CHUNK</a>);
<a name="l00090"></a>00090                 }
<a name="l00091"></a>00091 
<a name="l00092"></a>00092                 memcpy(this-&gt;buffer + this-&gt;buffer_used, buffer, size);
<a name="l00093"></a>00093                 this-&gt;buffer_used += size;
<a name="l00094"></a>00094                 this-&gt;buffer[this-&gt;buffer_used] = 0;
<a name="l00095"></a>00095 
<a name="l00096"></a>00096                 httpRequestParserParse(<span class="keyword">this</span>);
<a name="l00097"></a>00097         }
<a name="l00098"></a>00098 
<a name="l00099"></a>00099         <span class="keywordflow">return</span> size;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 
<a name="l00102"></a>00102 <a class="code" href="interface_8h.html#a446cc7d7282f8a0b8e62a371671ea605">INIT_IFACE</a>(Class, ctor, dtor, _clone);
<a name="l00103"></a>00103 <a class="code" href="interface_8h.html#a446cc7d7282f8a0b8e62a371671ea605">INIT_IFACE</a>(StreamReader, get_data);
<a name="l00104"></a>00104 <a class="code" href="class_8h.html#a509b4880afb25bb862c448d7a71e7afe">CREATE_CLASS</a>(<a class="code" href="structHttpRequestParser.html">HttpRequestParser</a>, NULL, <a class="code" href="interface_8h.html#a02255665665c91d905ec32d00d9a4a85">IFACE</a>(Class), <a class="code" href="interface_8h.html#a02255665665c91d905ec32d00d9a4a85">IFACE</a>(StreamReader));
<a name="l00105"></a>00105 
<a name="l00106"></a>00106 <span class="keyword">static</span>
<a name="l00107"></a>00107 <span class="keyword">inline</span>
<a name="l00108"></a>00108 <span class="keywordtype">char</span> *
<a name="l00109"></a>00109 httpRequestLineGet(<span class="keywordtype">char</span> ** data)
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111         <span class="keywordtype">char</span> * line_end = strstr(*data, <span class="stringliteral">&quot;\r\n&quot;</span>);
<a name="l00112"></a>00112         <span class="keywordtype">char</span> * ret      = *data;
<a name="l00113"></a>00113 
<a name="l00114"></a>00114         <span class="keywordflow">if</span> (NULL == line_end) {
<a name="l00115"></a>00115                 <span class="keywordflow">return</span> NULL;
<a name="l00116"></a>00116         }
<a name="l00117"></a>00117 
<a name="l00118"></a>00118         *line_end = 0;
<a name="l00119"></a>00119         *data = line_end + 2;
<a name="l00120"></a>00120 
<a name="l00121"></a>00121         <span class="keywordflow">return</span> ret;
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 
<a name="l00124"></a>00124 <span class="keyword">static</span>
<a name="l00125"></a>00125 <span class="keyword">inline</span>
<a name="l00126"></a>00126 <span class="keywordtype">void</span>
<a name="l00127"></a>00127 httpRequestSkip(<span class="keywordtype">char</span> ** data)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129         <span class="keywordflow">for</span> (; 0 != **data &amp;&amp; ! isalpha(**data); (*data)++);
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 
<a name="l00132"></a>00132 <span class="keyword">static</span>
<a name="l00133"></a>00133 <span class="keywordtype">void</span>
<a name="l00134"></a>00134 httpRequestParserParse(<a class="code" href="structHttpRequestParser.html">HttpRequestParser</a> <span class="keyword">this</span>)
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136         <span class="keyword">static</span> <a class="code" href="structHttpRequest.html">HttpRequest</a> request  = NULL;
<a name="l00137"></a>00137         <span class="keyword">static</span> <span class="keywordtype">char</span> *      data; <span class="comment">// static pointer to unprocessed data</span>
<a name="l00138"></a>00138         <span class="keywordtype">char</span> *             line;
<a name="l00139"></a>00139         <span class="keywordtype">int</span>                cont = 1;
<a name="l00140"></a>00140         <span class="keyword">static</span> <span class="keywordtype">int</span>         header_idx;
<a name="l00141"></a>00141 
<a name="l00142"></a>00142         <span class="keywordflow">while</span>(cont) {
<a name="l00143"></a>00143                 <span class="keywordflow">switch</span>(this-&gt;state) {
<a name="l00144"></a>00144                         <span class="keywordflow">case</span> <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21ab3db7445ba173b1f1e96920cc9a68ce5">HTTP_REQUEST_GARBAGE</a>:
<a name="l00145"></a>00145                                 data = this-&gt;buffer; <span class="comment">// initialize static pointer</span>
<a name="l00146"></a>00146                                 httpRequestSkip(&amp;data);
<a name="l00147"></a>00147                                 request = <span class="keyword">new</span>(<a class="code" href="structHttpRequest.html">HttpRequest</a>);
<a name="l00148"></a>00148 
<a name="l00149"></a>00149                                 this-&gt;state = <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21adb7cd42594721f63ab68224a0b1c250a">HTTP_REQUEST_START</a>;
<a name="l00150"></a>00150                                 <span class="keywordflow">break</span>;
<a name="l00151"></a>00151 
<a name="l00152"></a>00152                         <span class="keywordflow">case</span> <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21adb7cd42594721f63ab68224a0b1c250a">HTTP_REQUEST_START</a>:
<a name="l00153"></a>00153                                 <span class="keywordflow">if</span> (NULL == (line = httpRequestLineGet(&amp;data))) {
<a name="l00154"></a>00154                                         cont = 0;
<a name="l00155"></a>00155                                         <span class="keywordflow">break</span>;
<a name="l00156"></a>00156                                 }
<a name="l00157"></a>00157                                 
<a name="l00158"></a>00158                                 {
<a name="l00159"></a>00159                                         <span class="keywordtype">char</span> * delim = strchr(line, <span class="charliteral">&#39; &#39;</span>);
<a name="l00160"></a>00160 
<a name="l00161"></a>00161                                         <span class="keywordflow">if</span> (NULL != delim) {
<a name="l00162"></a>00162                                                 *delim = 0;
<a name="l00163"></a>00163                                                 request-&gt;<a class="code" href="structHttpRequest.html#a266c616e67dea85335c9fcfca6e5c0cb">method</a> = malloc(strlen(line) + 1);
<a name="l00164"></a>00164                                                 strcpy(request-&gt;<a class="code" href="structHttpRequest.html#a266c616e67dea85335c9fcfca6e5c0cb">method</a>, line);
<a name="l00165"></a>00165                                                 line = delim + 1;
<a name="l00166"></a>00166 
<a name="l00167"></a>00167                                                 <span class="keywordflow">for</span> (; *line == <span class="charliteral">&#39; &#39;</span> &amp;&amp; *line != 0; line++);
<a name="l00168"></a>00168 
<a name="l00169"></a>00169                                                 <span class="keywordflow">if</span> (0 != *line) {
<a name="l00170"></a>00170                                                         delim = strchr(line, <span class="charliteral">&#39; &#39;</span>);
<a name="l00171"></a>00171 
<a name="l00172"></a>00172                                                         <span class="keywordflow">if</span> (NULL != delim) {
<a name="l00173"></a>00173                                                                 *delim = 0;
<a name="l00174"></a>00174                                                                 request-&gt;<a class="code" href="structHttpRequest.html#a3f880540d72ba70d88f8a312b256b7c9">uri</a> = malloc(strlen(line) + 1);
<a name="l00175"></a>00175                                                                 strcpy(request-&gt;<a class="code" href="structHttpRequest.html#a3f880540d72ba70d88f8a312b256b7c9">uri</a>, line);
<a name="l00176"></a>00176                                                                 line = delim + 1;
<a name="l00177"></a>00177 
<a name="l00178"></a>00178                                                                 <span class="keywordflow">for</span> (; *line == <span class="charliteral">&#39; &#39;</span> &amp;&amp; *line != 0; line++);
<a name="l00179"></a>00179 
<a name="l00180"></a>00180                                                                 <span class="keywordflow">if</span> (0 != *line) {
<a name="l00181"></a>00181                                                                         request-&gt;<a class="code" href="structHttpRequest.html#ab9bfe4f569e5cbcbf49d4b8377d254a2">http_version</a> = malloc(strlen(line) + 1);
<a name="l00182"></a>00182                                                                         strcpy(request-&gt;<a class="code" href="structHttpRequest.html#ab9bfe4f569e5cbcbf49d4b8377d254a2">http_version</a>, line);
<a name="l00183"></a>00183                                                                 }
<a name="l00184"></a>00184                                                         }
<a name="l00185"></a>00185                                                 }
<a name="l00186"></a>00186                                         }
<a name="l00187"></a>00187                                 }
<a name="l00188"></a>00188 
<a name="l00189"></a>00189                                 header_idx = 0;
<a name="l00190"></a>00190                                 this-&gt;state = <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21a7d6368bbdc9707276bace26d735c2395">HTTP_REQUEST_REQUEST_LINE_DONE</a>;
<a name="l00191"></a>00191                                 <span class="keywordflow">break</span>;
<a name="l00192"></a>00192 
<a name="l00193"></a>00193                         <span class="keywordflow">case</span> <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21a7d6368bbdc9707276bace26d735c2395">HTTP_REQUEST_REQUEST_LINE_DONE</a>:
<a name="l00194"></a>00194                                 <span class="keywordflow">if</span> (NULL == (line = httpRequestLineGet(&amp;data))) {
<a name="l00195"></a>00195                                         cont = 0;
<a name="l00196"></a>00196                                         <span class="keywordflow">break</span>;
<a name="l00197"></a>00197                                 }
<a name="l00198"></a>00198 
<a name="l00199"></a>00199                                 <span class="keywordflow">if</span> (0 == strlen(line)) {
<a name="l00200"></a>00200                                         this-&gt;state = <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21a1a45d176d7e76f28cf1529c72a245cb7">HTTP_REQUEST_HEADERS_DONE</a>;
<a name="l00201"></a>00201                                         <span class="keywordflow">break</span>;
<a name="l00202"></a>00202                                 }
<a name="l00203"></a>00203 
<a name="l00204"></a>00204                                 {
<a name="l00205"></a>00205                                         <span class="keywordtype">char</span> * delim = strchr(line, <span class="charliteral">&#39;:&#39;</span>);
<a name="l00206"></a>00206 
<a name="l00207"></a>00207                                         *delim = 0;
<a name="l00208"></a>00208                                         (request-&gt;<a class="code" href="structHttpRequest.html#ab0abc660d76e3b9a169bddd4a92ffd52">header</a>)[header_idx].name = malloc(strlen(line) + 1);
<a name="l00209"></a>00209                                         strcpy((request-&gt;<a class="code" href="structHttpRequest.html#ab0abc660d76e3b9a169bddd4a92ffd52">header</a>)[header_idx].name, line);
<a name="l00210"></a>00210 
<a name="l00211"></a>00211                                         line = delim + 1;
<a name="l00212"></a>00212                                         <span class="keywordflow">for</span> (; *line == <span class="charliteral">&#39; &#39;</span> &amp;&amp; *line != 0; line++);
<a name="l00213"></a>00213 
<a name="l00214"></a>00214                                         (request-&gt;<a class="code" href="structHttpRequest.html#ab0abc660d76e3b9a169bddd4a92ffd52">header</a>)[header_idx].value = malloc(strlen(line) + 1);
<a name="l00215"></a>00215                                         strcpy((request-&gt;<a class="code" href="structHttpRequest.html#ab0abc660d76e3b9a169bddd4a92ffd52">header</a>)[header_idx].value, line);
<a name="l00216"></a>00216                                 }
<a name="l00217"></a>00217 
<a name="l00218"></a>00218                                 header_idx++;
<a name="l00219"></a>00219                                 <span class="keywordflow">break</span>;
<a name="l00220"></a>00220 
<a name="l00221"></a>00221                         <span class="keywordflow">case</span> <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21a1a45d176d7e76f28cf1529c72a245cb7">HTTP_REQUEST_HEADERS_DONE</a>:
<a name="l00225"></a>00225                                 this-&gt;state = <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21abb5b68f30f3d5e90723983a86ef54a8b">HTTP_REQUEST_DONE</a>;
<a name="l00226"></a>00226                                 <span class="keywordflow">break</span>;
<a name="l00227"></a>00227 
<a name="l00228"></a>00228                         <span class="keywordflow">case</span> <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21abb5b68f30f3d5e90723983a86ef54a8b">HTTP_REQUEST_DONE</a>:
<a name="l00232"></a>00232                                 this-&gt;request_queue-&gt;requests[(this-&gt;request_queue-&gt;nrequests)++] =
<a name="l00233"></a>00233                                         request;
<a name="l00234"></a>00234 
<a name="l00238"></a>00238                                 memmove(this-&gt;buffer,
<a name="l00239"></a>00239                                                 data,
<a name="l00240"></a>00240                                                 this-&gt;buffer_used - (data - this-&gt;buffer) + 1);
<a name="l00241"></a>00241 
<a name="l00242"></a>00242                                 this-&gt;buffer_used -= data - this-&gt;buffer;
<a name="l00243"></a>00243 
<a name="l00247"></a>00247                                 <span class="keywordflow">if</span> (0 == this-&gt;buffer_used) {
<a name="l00248"></a>00248                                         cont = 0;
<a name="l00249"></a>00249                                 }
<a name="l00250"></a>00250 
<a name="l00254"></a>00254                                 this-&gt;state = <a class="code" href="request__parser_8h.html#a9e1bc4e9118896fae9e2d86e25582c21ab3db7445ba173b1f1e96920cc9a68ce5">HTTP_REQUEST_GARBAGE</a>;
<a name="l00255"></a>00255 
<a name="l00256"></a>00256                                 <span class="keywordflow">break</span>;
<a name="l00257"></a>00257 
<a name="l00258"></a>00258                         <span class="keywordflow">default</span>:
<a name="l00259"></a>00259                                 <span class="keywordflow">break</span>;
<a name="l00260"></a>00260                 }
<a name="l00261"></a>00261         }
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263 
<a name="l00264"></a>00264 <span class="comment">// vim: set ts=4 sw=4:</span>
</pre></div></div>
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