_h_t_t_p_request_parser_8cpp-source.html

用c++编写http server的源码库,对socket等网络处理的代码可迅速转为己用.

<a name="l00236"></a>00236     <span class="comment">// close the connection, forcing the client to establish a new one</span>
<a name="l00237"></a>00237     m_tcp_conn-&gt;finish();
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239 
<a name="l00240"></a><a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#67d29971d989f532be4160153ff7d071">00240</a> boost::tribool <a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#67d29971d989f532be4160153ff7d071">HTTPRequestParser::parseRequestHeaders</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *&amp; ptr,
<a name="l00241"></a>00241                                                       <span class="keyword">const</span> <span class="keywordtype">size_t</span> len)
<a name="l00242"></a>00242 {
<a name="l00243"></a>00243     <span class="comment">// parse characters available in the read buffer</span>
<a name="l00244"></a>00244     <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> end = ptr + len;
<a name="l00245"></a>00245     
<a name="l00246"></a>00246     <span class="keywordflow">while</span> (ptr &lt; end) {
<a name="l00247"></a>00247 
<a name="l00248"></a>00248         <span class="keywordflow">switch</span> (m_parse_state) {
<a name="l00249"></a>00249         <span class="keywordflow">case</span> PARSE_METHOD_START:
<a name="l00250"></a>00250             <span class="comment">// we have not yet started parsing the HTTP method string</span>
<a name="l00251"></a>00251             <span class="keywordflow">if</span> (*ptr != <span class="charliteral">' '</span> &amp;&amp; *ptr!=<span class="charliteral">'\r'</span> &amp;&amp; *ptr!=<span class="charliteral">'\n'</span>) {  <span class="comment">// ignore leading whitespace</span>
<a name="l00252"></a>00252                 <span class="keywordflow">if</span> (!<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#3576f39f53f154efb0ba36486abedc64">isChar</a>(*ptr) || <a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#8f064aeda3ebd36b268e4a672903bfbd">isControl</a>(*ptr) || <a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#c1e2d889f65e4ce9cdf48c7ceb73ddfa">isSpecial</a>(*ptr))
<a name="l00253"></a>00253                     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00254"></a>00254                 m_parse_state = PARSE_METHOD;
<a name="l00255"></a>00255                 m_method.erase();
<a name="l00256"></a>00256                 m_method.push_back(*ptr);
<a name="l00257"></a>00257             }
<a name="l00258"></a>00258             <span class="keywordflow">break</span>;
<a name="l00259"></a>00259 
<a name="l00260"></a>00260         <span class="keywordflow">case</span> PARSE_METHOD:
<a name="l00261"></a>00261             <span class="comment">// we have started parsing the HTTP method string</span>
<a name="l00262"></a>00262             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">' '</span>) {
<a name="l00263"></a>00263                 m_http_request-&gt;setMethod(m_method);
<a name="l00264"></a>00264                 m_resource.erase();
<a name="l00265"></a>00265                 m_parse_state = PARSE_URI_STEM;
<a name="l00266"></a>00266             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#3576f39f53f154efb0ba36486abedc64">isChar</a>(*ptr) || <a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#8f064aeda3ebd36b268e4a672903bfbd">isControl</a>(*ptr) || <a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#c1e2d889f65e4ce9cdf48c7ceb73ddfa">isSpecial</a>(*ptr)) {
<a name="l00267"></a>00267                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00268"></a>00268             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_method.size() &gt;= METHOD_MAX) {
<a name="l00269"></a>00269                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00270"></a>00270             } <span class="keywordflow">else</span> {
<a name="l00271"></a>00271                 m_method.push_back(*ptr);
<a name="l00272"></a>00272             }
<a name="l00273"></a>00273             <span class="keywordflow">break</span>;
<a name="l00274"></a>00274 
<a name="l00275"></a>00275         <span class="keywordflow">case</span> PARSE_URI_STEM:
<a name="l00276"></a>00276             <span class="comment">// we have started parsing the URI stem (or resource name)</span>
<a name="l00277"></a>00277             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">' '</span>) {
<a name="l00278"></a>00278                 m_http_request-&gt;setResource(m_resource);
<a name="l00279"></a>00279                 m_parse_state = PARSE_HTTP_VERSION_H;
<a name="l00280"></a>00280             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'?'</span>) {
<a name="l00281"></a>00281                 m_http_request-&gt;setResource(m_resource);
<a name="l00282"></a>00282                 m_query_string.erase();
<a name="l00283"></a>00283                 m_parse_state = PARSE_URI_QUERY;
<a name="l00284"></a>00284             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#8f064aeda3ebd36b268e4a672903bfbd">isControl</a>(*ptr)) {
<a name="l00285"></a>00285                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00286"></a>00286             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_resource.size() &gt;= RESOURCE_MAX) {
<a name="l00287"></a>00287                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00288"></a>00288             } <span class="keywordflow">else</span> {
<a name="l00289"></a>00289                 m_resource.push_back(*ptr);
<a name="l00290"></a>00290             }
<a name="l00291"></a>00291             <span class="keywordflow">break</span>;
<a name="l00292"></a>00292 
<a name="l00293"></a>00293         <span class="keywordflow">case</span> PARSE_URI_QUERY:
<a name="l00294"></a>00294             <span class="comment">// we have started parsing the URI query string</span>
<a name="l00295"></a>00295             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">' '</span>) {
<a name="l00296"></a>00296                 m_http_request-&gt;setQueryString(m_query_string);
<a name="l00297"></a>00297                 m_parse_state = PARSE_HTTP_VERSION_H;
<a name="l00298"></a>00298             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#8f064aeda3ebd36b268e4a672903bfbd">isControl</a>(*ptr)) {
<a name="l00299"></a>00299                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00300"></a>00300             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_query_string.size() &gt;= QUERY_STRING_MAX) {
<a name="l00301"></a>00301                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00302"></a>00302             } <span class="keywordflow">else</span> {
<a name="l00303"></a>00303                 m_query_string.push_back(*ptr);
<a name="l00304"></a>00304             }
<a name="l00305"></a>00305             <span class="keywordflow">break</span>;
<a name="l00306"></a>00306             
<a name="l00307"></a>00307         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_H:
<a name="l00308"></a>00308             <span class="comment">// parsing "HTTP"</span>
<a name="l00309"></a>00309             <span class="keywordflow">if</span> (*ptr != <span class="charliteral">'H'</span>) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00310"></a>00310             m_parse_state = PARSE_HTTP_VERSION_T_1;
<a name="l00311"></a>00311             <span class="keywordflow">break</span>;
<a name="l00312"></a>00312 
<a name="l00313"></a>00313         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_T_1:
<a name="l00314"></a>00314             <span class="comment">// parsing "HTTP"</span>
<a name="l00315"></a>00315             <span class="keywordflow">if</span> (*ptr != <span class="charliteral">'T'</span>) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00316"></a>00316             m_parse_state = PARSE_HTTP_VERSION_T_2;
<a name="l00317"></a>00317             <span class="keywordflow">break</span>;
<a name="l00318"></a>00318 
<a name="l00319"></a>00319         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_T_2:
<a name="l00320"></a>00320             <span class="comment">// parsing "HTTP"</span>
<a name="l00321"></a>00321             <span class="keywordflow">if</span> (*ptr != <span class="charliteral">'T'</span>) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00322"></a>00322             m_parse_state = PARSE_HTTP_VERSION_P;
<a name="l00323"></a>00323             <span class="keywordflow">break</span>;
<a name="l00324"></a>00324 
<a name="l00325"></a>00325         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_P:
<a name="l00326"></a>00326             <span class="comment">// parsing "HTTP"</span>
<a name="l00327"></a>00327             <span class="keywordflow">if</span> (*ptr != <span class="charliteral">'P'</span>) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00328"></a>00328             m_parse_state = PARSE_HTTP_VERSION_SLASH;
<a name="l00329"></a>00329             <span class="keywordflow">break</span>;
<a name="l00330"></a>00330 
<a name="l00331"></a>00331         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_SLASH:
<a name="l00332"></a>00332             <span class="comment">// parsing slash after "HTTP"</span>
<a name="l00333"></a>00333             <span class="keywordflow">if</span> (*ptr != <span class="charliteral">'/'</span>) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00334"></a>00334             m_parse_state = PARSE_HTTP_VERSION_MAJOR_START;
<a name="l00335"></a>00335             <span class="keywordflow">break</span>;
<a name="l00336"></a>00336 
<a name="l00337"></a>00337         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_MAJOR_START:
<a name="l00338"></a>00338             <span class="comment">// parsing the first digit of the major version number</span>
<a name="l00339"></a>00339             <span class="keywordflow">if</span> (!<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#fadced7b359e96de0e1fdaad97d5f695">isDigit</a>(*ptr)) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00340"></a>00340             m_http_request-&gt;setVersionMajor(*ptr - <span class="charliteral">'0'</span>);
<a name="l00341"></a>00341             m_parse_state = PARSE_HTTP_VERSION_MAJOR;
<a name="l00342"></a>00342             <span class="keywordflow">break</span>;
<a name="l00343"></a>00343 
<a name="l00344"></a>00344         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_MAJOR:
<a name="l00345"></a>00345             <span class="comment">// parsing the major version number (not first digit)</span>
<a name="l00346"></a>00346             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'.'</span>) {
<a name="l00347"></a>00347                 m_parse_state = PARSE_HTTP_VERSION_MINOR_START;
<a name="l00348"></a>00348             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#fadced7b359e96de0e1fdaad97d5f695">isDigit</a>(*ptr)) {
<a name="l00349"></a>00349                 m_http_request-&gt;setVersionMajor( (m_http_request-&gt;getVersionMajor() * 10)
<a name="l00350"></a>00350                                                  + (*ptr - <span class="charliteral">'0'</span>) );
<a name="l00351"></a>00351             } <span class="keywordflow">else</span> {
<a name="l00352"></a>00352                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00353"></a>00353             }
<a name="l00354"></a>00354             <span class="keywordflow">break</span>;
<a name="l00355"></a>00355 
<a name="l00356"></a>00356         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_MINOR_START:
<a name="l00357"></a>00357             <span class="comment">// parsing the first digit of the minor version number</span>
<a name="l00358"></a>00358             <span class="keywordflow">if</span> (!<a class="code" href="classpion_1_1_h_t_t_p_request_parser.html#fadced7b359e96de0e1fdaad97d5f695">isDigit</a>(*ptr)) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00359"></a>00359             m_http_request-&gt;setVersionMinor(*ptr - <span class="charliteral">'0'</span>);
<a name="l00360"></a>00360             m_parse_state = PARSE_HTTP_VERSION_MINOR;