_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="l00361"></a>00361             <span class="keywordflow">break</span>;
<a name="l00362"></a>00362 
<a name="l00363"></a>00363         <span class="keywordflow">case</span> PARSE_HTTP_VERSION_MINOR:
<a name="l00364"></a>00364             <span class="comment">// parsing the major version number (not first digit)</span>
<a name="l00365"></a>00365             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\r'</span>) {
<a name="l00366"></a>00366                 m_parse_state = PARSE_EXPECTING_NEWLINE;
<a name="l00367"></a>00367             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\n'</span>) {
<a name="l00368"></a>00368                 m_parse_state = PARSE_EXPECTING_CR;
<a name="l00369"></a>00369             } <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="l00370"></a>00370                 m_http_request-&gt;setVersionMinor( (m_http_request-&gt;getVersionMinor() * 10)
<a name="l00371"></a>00371                                                  + (*ptr - <span class="charliteral">'0'</span>) );
<a name="l00372"></a>00372             } <span class="keywordflow">else</span> {
<a name="l00373"></a>00373                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00374"></a>00374             }
<a name="l00375"></a>00375             <span class="keywordflow">break</span>;
<a name="l00376"></a>00376 
<a name="l00377"></a>00377         <span class="keywordflow">case</span> PARSE_EXPECTING_NEWLINE:
<a name="l00378"></a>00378             <span class="comment">// we received a CR; expecting a newline to follow</span>
<a name="l00379"></a>00379             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\n'</span>) {
<a name="l00380"></a>00380                 m_parse_state = PARSE_HEADER_START;
<a name="l00381"></a>00381             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\r'</span>) {
<a name="l00382"></a>00382                 <span class="comment">// we received two CR's in a row</span>
<a name="l00383"></a>00383                 <span class="comment">// assume CR only is (incorrectly) being used for line termination</span>
<a name="l00384"></a>00384                 <span class="comment">// therefore, the request is finished</span>
<a name="l00385"></a>00385                 ++ptr;
<a name="l00386"></a>00386                 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00387"></a>00387             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\t'</span> || *ptr == <span class="charliteral">' '</span>) {
<a name="l00388"></a>00388                 m_parse_state = PARSE_HEADER_WHITESPACE;
<a name="l00389"></a>00389             } <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="l00390"></a>00390                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00391"></a>00391             } <span class="keywordflow">else</span> {
<a name="l00392"></a>00392                 <span class="comment">// assume it is the first character for the name of a header</span>
<a name="l00393"></a>00393                 m_header_name.erase();
<a name="l00394"></a>00394                 m_header_name.push_back(*ptr);
<a name="l00395"></a>00395                 m_parse_state = PARSE_HEADER_NAME;
<a name="l00396"></a>00396             }
<a name="l00397"></a>00397             <span class="keywordflow">break</span>;
<a name="l00398"></a>00398 
<a name="l00399"></a>00399         <span class="keywordflow">case</span> PARSE_EXPECTING_CR:
<a name="l00400"></a>00400             <span class="comment">// we received a newline without a CR</span>
<a name="l00401"></a>00401             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\r'</span>) {
<a name="l00402"></a>00402                 m_parse_state = PARSE_HEADER_START;
<a name="l00403"></a>00403             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\n'</span>) {
<a name="l00404"></a>00404                 <span class="comment">// we received two newlines in a row</span>
<a name="l00405"></a>00405                 <span class="comment">// assume newline only is (incorrectly) being used for line termination</span>
<a name="l00406"></a>00406                 <span class="comment">// therefore, the request is finished</span>
<a name="l00407"></a>00407                 ++ptr;
<a name="l00408"></a>00408                 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00409"></a>00409             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\t'</span> || *ptr == <span class="charliteral">' '</span>) {
<a name="l00410"></a>00410                 m_parse_state = PARSE_HEADER_WHITESPACE;
<a name="l00411"></a>00411             } <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="l00412"></a>00412                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00413"></a>00413             } <span class="keywordflow">else</span> {
<a name="l00414"></a>00414                 <span class="comment">// assume it is the first character for the name of a header</span>
<a name="l00415"></a>00415                 m_header_name.erase();
<a name="l00416"></a>00416                 m_header_name.push_back(*ptr);
<a name="l00417"></a>00417                 m_parse_state = PARSE_HEADER_NAME;
<a name="l00418"></a>00418             }
<a name="l00419"></a>00419             <span class="keywordflow">break</span>;
<a name="l00420"></a>00420 
<a name="l00421"></a>00421         <span class="keywordflow">case</span> PARSE_HEADER_WHITESPACE:
<a name="l00422"></a>00422             <span class="comment">// parsing whitespace before a header name</span>
<a name="l00423"></a>00423             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\r'</span>) {
<a name="l00424"></a>00424                 m_parse_state = PARSE_EXPECTING_NEWLINE;
<a name="l00425"></a>00425             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\n'</span>) {
<a name="l00426"></a>00426                 m_parse_state = PARSE_EXPECTING_CR;
<a name="l00427"></a>00427             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr != <span class="charliteral">'\t'</span> &amp;&amp; *ptr != <span class="charliteral">' '</span>) {
<a name="l00428"></a>00428                 <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="l00429"></a>00429                     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00430"></a>00430                 <span class="comment">// assume it is the first character for the name of a header</span>
<a name="l00431"></a>00431                 m_header_name.erase();
<a name="l00432"></a>00432                 m_header_name.push_back(*ptr);
<a name="l00433"></a>00433                 m_parse_state = PARSE_HEADER_NAME;
<a name="l00434"></a>00434             }
<a name="l00435"></a>00435             <span class="keywordflow">break</span>;
<a name="l00436"></a>00436 
<a name="l00437"></a>00437         <span class="keywordflow">case</span> PARSE_HEADER_START:
<a name="l00438"></a>00438             <span class="comment">// parsing the start of a new header</span>
<a name="l00439"></a>00439             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\r'</span>) {
<a name="l00440"></a>00440                 m_parse_state = PARSE_EXPECTING_FINAL_NEWLINE;
<a name="l00441"></a>00441             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\n'</span>) {
<a name="l00442"></a>00442                 m_parse_state = PARSE_EXPECTING_FINAL_CR;
<a name="l00443"></a>00443             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\t'</span> || *ptr == <span class="charliteral">' '</span>) {
<a name="l00444"></a>00444                 m_parse_state = PARSE_HEADER_WHITESPACE;
<a name="l00445"></a>00445             } <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="l00446"></a>00446                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00447"></a>00447             } <span class="keywordflow">else</span> {
<a name="l00448"></a>00448                 <span class="comment">// first character for the name of a header</span>
<a name="l00449"></a>00449                 m_header_name.erase();
<a name="l00450"></a>00450                 m_header_name.push_back(*ptr);
<a name="l00451"></a>00451                 m_parse_state = PARSE_HEADER_NAME;
<a name="l00452"></a>00452             }
<a name="l00453"></a>00453             <span class="keywordflow">break</span>;
<a name="l00454"></a>00454 
<a name="l00455"></a>00455         <span class="keywordflow">case</span> PARSE_HEADER_NAME:
<a name="l00456"></a>00456             <span class="comment">// parsing the name of a header</span>
<a name="l00457"></a>00457             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">':'</span>) {
<a name="l00458"></a>00458                 m_header_value.erase();
<a name="l00459"></a>00459                 m_parse_state = PARSE_SPACE_BEFORE_HEADER_VALUE;
<a name="l00460"></a>00460             } <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="l00461"></a>00461                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00462"></a>00462             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_header_name.size() &gt;= HEADER_NAME_MAX) {
<a name="l00463"></a>00463                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00464"></a>00464             } <span class="keywordflow">else</span> {
<a name="l00465"></a>00465                 <span class="comment">// character (not first) for the name of a header</span>
<a name="l00466"></a>00466                 m_header_name.push_back(*ptr);
<a name="l00467"></a>00467             }
<a name="l00468"></a>00468             <span class="keywordflow">break</span>;
<a name="l00469"></a>00469 
<a name="l00470"></a>00470         <span class="keywordflow">case</span> PARSE_SPACE_BEFORE_HEADER_VALUE:
<a name="l00471"></a>00471             <span class="comment">// parsing space character before a header's value</span>
<a name="l00472"></a>00472             <span class="keywordflow">if</span> (*ptr == <span class="charliteral">' '</span>) {
<a name="l00473"></a>00473                 m_parse_state = PARSE_HEADER_VALUE;
<a name="l00474"></a>00474             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\r'</span>) {
<a name="l00475"></a>00475                 m_http_request-&gt;addHeader(m_header_name, m_header_value);
<a name="l00476"></a>00476                 m_parse_state = PARSE_EXPECTING_NEWLINE;
<a name="l00477"></a>00477             } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*ptr == <span class="charliteral">'\n'</span>) {
<a name="l00478"></a>00478                 m_http_request-&gt;addHeader(m_header_name, m_header_value);
<a name="l00479"></a>00479                 m_parse_state = PARSE_EXPECTING_CR;
<a name="l00480"></a>00480             } <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="l00481"></a>00481                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00482"></a>00482             } <span class="keywordflow">else</span> {
<a name="l00483"></a>00483                 <span class="comment">// assume it is the first character for the value of a header</span>
<a name="l00484"></a>00484                 m_header_value.push_back(*ptr);
<a name="l00485"></a>00485                 m_parse_state = PARSE_HEADER_VALUE;