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example_httpreq_form_8c-example.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Sagui library: example_httpreq_form.c</title>
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<div id="projectname">Sagui library<span id="projectnumber"> v3.5.0</span>
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<div id="projectbrief">Cross-platform library which helps to develop web servers or frameworks.</div>
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<div class="headertitle"><div class="title">example_httpreq_form.c</div></div>
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<div class="contents">
<p>Simple example showing how to retrieve the HTML form fields.</p>
<div class="fragment"><div class="line"><span class="comment">/* _</span></div>
<div class="line"><span class="comment"> * ___ __ _ __ _ _ _(_)</span></div>
<div class="line"><span class="comment"> * / __|/ _` |/ _` | | | | |</span></div>
<div class="line"><span class="comment"> * \__ \ (_| | (_| | |_| | |</span></div>
<div class="line"><span class="comment"> * |___/\__,_|\__, |\__,_|_|</span></div>
<div class="line"><span class="comment"> * |___/</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Cross-platform library which helps to develop web servers or frameworks.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Copyright (C) 2016-2021 Silvio Clecio <silvioprog@gmail.com></span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Sagui library is free software; you can redistribute it and/or</span></div>
<div class="line"><span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><span class="comment"> * License as published by the Free Software Foundation; either</span></div>
<div class="line"><span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Sagui library is distributed in the hope that it will be useful,</span></div>
<div class="line"><span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><span class="comment"> * License along with Sagui library; if not, write to the Free Software</span></div>
<div class="line"><span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"> </div>
<div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment"> * Sending HTML form fields using cURL:</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * curl --request POST --data 'username=silvioprog&password=i-love-sagui' -w "\n" http://localhost:<PORT></span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><span class="preprocessor">#include <stdint.h></span></div>
<div class="line"><span class="preprocessor">#include <string.h></span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="sagui_8h.html">sagui.h</a>></span></div>
<div class="line"> </div>
<div class="line"><span class="comment">/* NOTE: Error checking has been omitted to make it clear. */</span></div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">void</span> req_cb(__SG_UNUSED <span class="keywordtype">void</span> *cls, <span class="keyword">struct</span> <a id="_a0" name="_a0"></a><a class="code hl_struct" href="structsg__httpreq.html">sg_httpreq</a> *req,</div>
<div class="line"> <span class="keyword">struct</span> <a id="_a1" name="_a1"></a><a class="code hl_struct" href="structsg__httpres.html">sg_httpres</a> *res) {</div>
<div class="line"> <span class="keyword">struct </span><a id="_a2" name="_a2"></a><a class="code hl_struct" href="structsg__strmap.html">sg_strmap</a> **fields = <a id="a3" name="a3"></a><a class="code hl_function" href="group__sg__httpsrv.html#gaadf17d1c480612cd06e05f3a94877462">sg_httpreq_fields</a>(req);</div>
<div class="line"> <span class="keyword">struct </span><a id="_a4" name="_a4"></a><a class="code hl_struct" href="structsg__str.html">sg_str</a> *result = <a id="a5" name="a5"></a><a class="code hl_function" href="group__sg__str.html#ga9f96b237d9719679f1486965134097ad">sg_str_new</a>();</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">char</span> *username = <a id="a6" name="a6"></a><a class="code hl_function" href="group__sg__strmap.html#ga805182bae3c6c96156d5f91ba73b18b2">sg_strmap_get</a>(*fields, <span class="stringliteral">"username"</span>);</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">char</span> *password = <a class="code hl_function" href="group__sg__strmap.html#ga805182bae3c6c96156d5f91ba73b18b2">sg_strmap_get</a>(*fields, <span class="stringliteral">"password"</span>);</div>
<div class="line"> <a id="a7" name="a7"></a><a class="code hl_function" href="group__sg__str.html#gaca6e4ba7d52ece0ee313519c48336811">sg_str_printf</a>(result, <span class="stringliteral">"Username: %s; Password: %s"</span>, username, password);</div>
<div class="line"> <a id="a8" name="a8"></a><a class="code hl_define" href="group__sg__httpsrv.html#gae64c67ed9caee0189cf4fd669a869255">sg_httpres_send</a>(res, <a id="a9" name="a9"></a><a class="code hl_function" href="group__sg__str.html#ga26c8c498ef411d6876453f2220574fcd">sg_str_content</a>(result), <span class="stringliteral">"text/plain"</span>, 200);</div>
<div class="line"> <a id="a10" name="a10"></a><a class="code hl_function" href="group__sg__str.html#gaae1e56717404fde09aea8639bbfa8d80">sg_str_free</a>(result);</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span> *argv[]) {</div>
<div class="line"> <span class="keyword">struct </span><a id="_a11" name="_a11"></a><a class="code hl_struct" href="structsg__httpsrv.html">sg_httpsrv</a> *srv;</div>
<div class="line"> uint16_t port;</div>
<div class="line"> <span class="keywordflow">if</span> (argc != 2) {</div>
<div class="line"> printf(<span class="stringliteral">"%s <PORT>\n"</span>, argv[0]);</div>
<div class="line"> <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"> }</div>
<div class="line"> port = strtol(argv[1], NULL, 10);</div>
<div class="line"> srv = <a id="a12" name="a12"></a><a class="code hl_function" href="group__sg__httpsrv.html#ga56b59921f35e8fac91c48ddb0669b5d1">sg_httpsrv_new</a>(req_cb, NULL);</div>
<div class="line"> <span class="keywordflow">if</span> (!<a id="a13" name="a13"></a><a class="code hl_function" href="group__sg__httpsrv.html#gafa768c07cdd78f78c14a5daaafd4c20a">sg_httpsrv_listen</a>(srv, port, <span class="keyword">false</span>)) {</div>
<div class="line"> <a id="a14" name="a14"></a><a class="code hl_function" href="group__sg__httpsrv.html#gac377679c831c0b428ee80b2f63174bf8">sg_httpsrv_free</a>(srv);</div>
<div class="line"> <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"> }</div>
<div class="line"> fprintf(stdout, <span class="stringliteral">"Server running at http://localhost:%d\n"</span>,</div>
<div class="line"> <a id="a15" name="a15"></a><a class="code hl_function" href="group__sg__httpsrv.html#gafdc2bab56e952bd8395f2ebfd91469f5">sg_httpsrv_port</a>(srv));</div>
<div class="line"> fflush(stdout);</div>
<div class="line"> getchar();</div>
<div class="line"> <a class="code hl_function" href="group__sg__httpsrv.html#gac377679c831c0b428ee80b2f63174bf8">sg_httpsrv_free</a>(srv);</div>
<div class="line"> <span class="keywordflow">return</span> EXIT_SUCCESS;</div>
<div class="line">}</div>
<div class="ttc" id="agroup__sg__httpsrv_html_ga56b59921f35e8fac91c48ddb0669b5d1"><div class="ttname"><a href="group__sg__httpsrv.html#ga56b59921f35e8fac91c48ddb0669b5d1">sg_httpsrv_new</a></div><div class="ttdeci">struct sg_httpsrv * sg_httpsrv_new(sg_httpreq_cb cb, void *cls) __attribute__((malloc))</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_gaadf17d1c480612cd06e05f3a94877462"><div class="ttname"><a href="group__sg__httpsrv.html#gaadf17d1c480612cd06e05f3a94877462">sg_httpreq_fields</a></div><div class="ttdeci">struct sg_strmap ** sg_httpreq_fields(struct sg_httpreq *req)</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_gac377679c831c0b428ee80b2f63174bf8"><div class="ttname"><a href="group__sg__httpsrv.html#gac377679c831c0b428ee80b2f63174bf8">sg_httpsrv_free</a></div><div class="ttdeci">void sg_httpsrv_free(struct sg_httpsrv *srv)</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_gae64c67ed9caee0189cf4fd669a869255"><div class="ttname"><a href="group__sg__httpsrv.html#gae64c67ed9caee0189cf4fd669a869255">sg_httpres_send</a></div><div class="ttdeci">#define sg_httpres_send(res, val, content_type, status)</div><div class="ttdef"><b>Definition</b> sagui.h:1032</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_gafa768c07cdd78f78c14a5daaafd4c20a"><div class="ttname"><a href="group__sg__httpsrv.html#gafa768c07cdd78f78c14a5daaafd4c20a">sg_httpsrv_listen</a></div><div class="ttdeci">bool sg_httpsrv_listen(struct sg_httpsrv *srv, uint16_t port, bool threaded)</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_gafdc2bab56e952bd8395f2ebfd91469f5"><div class="ttname"><a href="group__sg__httpsrv.html#gafdc2bab56e952bd8395f2ebfd91469f5">sg_httpsrv_port</a></div><div class="ttdeci">uint16_t sg_httpsrv_port(struct sg_httpsrv *srv)</div></div>
<div class="ttc" id="agroup__sg__str_html_ga26c8c498ef411d6876453f2220574fcd"><div class="ttname"><a href="group__sg__str.html#ga26c8c498ef411d6876453f2220574fcd">sg_str_content</a></div><div class="ttdeci">int const char * sg_str_content(struct sg_str *str)</div></div>
<div class="ttc" id="agroup__sg__str_html_ga9f96b237d9719679f1486965134097ad"><div class="ttname"><a href="group__sg__str.html#ga9f96b237d9719679f1486965134097ad">sg_str_new</a></div><div class="ttdeci">struct sg_str * sg_str_new(void) __attribute__((malloc))</div></div>
<div class="ttc" id="agroup__sg__str_html_gaae1e56717404fde09aea8639bbfa8d80"><div class="ttname"><a href="group__sg__str.html#gaae1e56717404fde09aea8639bbfa8d80">sg_str_free</a></div><div class="ttdeci">void sg_str_free(struct sg_str *str)</div></div>
<div class="ttc" id="agroup__sg__str_html_gaca6e4ba7d52ece0ee313519c48336811"><div class="ttname"><a href="group__sg__str.html#gaca6e4ba7d52ece0ee313519c48336811">sg_str_printf</a></div><div class="ttdeci">int sg_str_printf(struct sg_str *str, const char *fmt,...) __attribute__((format(printf</div></div>
<div class="ttc" id="agroup__sg__strmap_html_ga805182bae3c6c96156d5f91ba73b18b2"><div class="ttname"><a href="group__sg__strmap.html#ga805182bae3c6c96156d5f91ba73b18b2">sg_strmap_get</a></div><div class="ttdeci">const char * sg_strmap_get(struct sg_strmap *map, const char *name)</div></div>
<div class="ttc" id="asagui_8h_html"><div class="ttname"><a href="sagui_8h.html">sagui.h</a></div></div>
<div class="ttc" id="astructsg__httpreq_html"><div class="ttname"><a href="structsg__httpreq.html">sg_httpreq</a></div></div>
<div class="ttc" id="astructsg__httpres_html"><div class="ttname"><a href="structsg__httpres.html">sg_httpres</a></div></div>
<div class="ttc" id="astructsg__httpsrv_html"><div class="ttname"><a href="structsg__httpsrv.html">sg_httpsrv</a></div></div>
<div class="ttc" id="astructsg__str_html"><div class="ttname"><a href="structsg__str.html">sg_str</a></div></div>
<div class="ttc" id="astructsg__strmap_html"><div class="ttname"><a href="structsg__strmap.html">sg_strmap</a></div></div>
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