_h_t_t_p_types_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="l00052"></a>00052 <span class="keyword">const</span> std::string   <a class="code" href="structpion_1_1_h_t_t_p_types.html#903ce5abee73a4c99612234b1422a089">HTTPTypes::RESPONSE_MESSAGE_SERVER_ERROR</a>(<span class="stringliteral">"Server Error"</span>);
<a name="l00053"></a>00053 
<a name="l00054"></a>00054 <span class="comment">// common HTTP response codes</span>
<a name="l00055"></a>00055 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  <a class="code" href="structpion_1_1_h_t_t_p_types.html#6fcaa066cae14d0e6e88c087d7b31b79">HTTPTypes::RESPONSE_CODE_OK</a> = 200;
<a name="l00056"></a>00056 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  <a class="code" href="structpion_1_1_h_t_t_p_types.html#aae74062dadc6e333d0cfe1dee070589">HTTPTypes::RESPONSE_CODE_NOT_FOUND</a> = 404;
<a name="l00057"></a>00057 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  <a class="code" href="structpion_1_1_h_t_t_p_types.html#f9ed71ebed0140c89e539b74b8c09cfa">HTTPTypes::RESPONSE_CODE_NOT_MODIFIED</a> = 304;
<a name="l00058"></a>00058 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  <a class="code" href="structpion_1_1_h_t_t_p_types.html#5b932c332af476686f33fc7a27b31904">HTTPTypes::RESPONSE_CODE_BAD_REQUEST</a> = 400;
<a name="l00059"></a>00059 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  <a class="code" href="structpion_1_1_h_t_t_p_types.html#523b04e26f21894e6b0de7fc17a564f4">HTTPTypes::RESPONSE_CODE_SERVER_ERROR</a> = 500;
<a name="l00060"></a>00060 
<a name="l00061"></a><a class="code" href="structpion_1_1_h_t_t_p_types.html#adee1392ed4b47bf03224d985cab146c">00061</a> std::string <a class="code" href="structpion_1_1_h_t_t_p_types.html#adee1392ed4b47bf03224d985cab146c" title="escapes URL-encoded strings (a20value+with20spaces)">HTTPTypes::url_decode</a>(<span class="keyword">const</span> std::string&amp; str)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063     <span class="keywordtype">char</span> decode_buf[3];
<a name="l00064"></a>00064     std::string result;
<a name="l00065"></a>00065     result.reserve(str.size());
<a name="l00066"></a>00066     
<a name="l00067"></a>00067     <span class="keywordflow">for</span> (std::string::size_type pos = 0; pos &lt; str.size(); ++pos) {
<a name="l00068"></a>00068         <span class="keywordflow">switch</span>(str[pos]) {
<a name="l00069"></a>00069         <span class="keywordflow">case</span> <span class="charliteral">'+'</span>:
<a name="l00070"></a>00070             <span class="comment">// convert to space character</span>
<a name="l00071"></a>00071             result += <span class="charliteral">' '</span>;
<a name="l00072"></a>00072             <span class="keywordflow">break</span>;
<a name="l00073"></a>00073         <span class="keywordflow">case</span> <span class="charliteral">'%'</span>:
<a name="l00074"></a>00074             <span class="comment">// decode hexidecimal value</span>
<a name="l00075"></a>00075             <span class="keywordflow">if</span> (pos + 2 &lt; str.size()) {
<a name="l00076"></a>00076                 decode_buf[0] = str[++pos];
<a name="l00077"></a>00077                 decode_buf[1] = str[++pos];
<a name="l00078"></a>00078                 decode_buf[2] = <span class="charliteral">'\0'</span>;
<a name="l00079"></a>00079                 result += <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span><span class="keyword">&gt;</span>( strtol(decode_buf, 0, 16) );
<a name="l00080"></a>00080             } <span class="keywordflow">else</span> {
<a name="l00081"></a>00081                 <span class="comment">// recover from error by not decoding character</span>
<a name="l00082"></a>00082                 result += <span class="charliteral">'%'</span>;
<a name="l00083"></a>00083             }
<a name="l00084"></a>00084             <span class="keywordflow">break</span>;
<a name="l00085"></a>00085         <span class="keywordflow">default</span>:
<a name="l00086"></a>00086             <span class="comment">// character does not need to be escaped</span>
<a name="l00087"></a>00087             result += str[pos];
<a name="l00088"></a>00088         }
<a name="l00089"></a>00089     };
<a name="l00090"></a>00090     
<a name="l00091"></a>00091     <span class="keywordflow">return</span> result;
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093 
<a name="l00094"></a><a class="code" href="structpion_1_1_h_t_t_p_types.html#199c55b8c43a2a16a2963e0ac5f51874">00094</a> std::string HTTPTypes::get_date_string(<span class="keyword">const</span> time_t t)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096     <span class="comment">// use mutex since time functions are normally not thread-safe</span>
<a name="l00097"></a>00097     <span class="keyword">static</span> boost::mutex time_mutex;
<a name="l00098"></a>00098     <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *TIME_FORMAT = <span class="stringliteral">"%a, %d %b %Y %H:%M:%S GMT"</span>;
<a name="l00099"></a>00099     <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> TIME_BUF_SIZE = 100;
<a name="l00100"></a>00100     <span class="keywordtype">char</span> time_buf[TIME_BUF_SIZE+1];
<a name="l00101"></a>00101 
<a name="l00102"></a>00102     boost::mutex::scoped_lock time_lock(time_mutex);
<a name="l00103"></a>00103     <span class="keywordflow">if</span> (strftime(time_buf, TIME_BUF_SIZE, TIME_FORMAT, gmtime(&amp;t)) == 0)
<a name="l00104"></a>00104         time_buf[0] = <span class="charliteral">'\0'</span>; <span class="comment">// failed; resulting buffer is indeterminate</span>
<a name="l00105"></a>00105     time_lock.unlock();
<a name="l00106"></a>00106 
<a name="l00107"></a>00107     <span class="keywordflow">return</span> std::string(time_buf);
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 
<a name="l00110"></a>00110 }   <span class="comment">// end namespace pion</span>
<a name="l00111"></a>00111 
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