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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_httpauth.c</title>
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<div id="projectname">Sagui library<span id="projectnumber"> v3.5.1</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_httpauth.c</div></div>
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<div class="contents">
<p>Simple example showing the Basic authentication feature.</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) 2016-2019 Silvio Clecio <[email protected]></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="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">bool</span> strmatch(<span class="keyword">const</span> <span class="keywordtype">char</span> *s1, <span class="keyword">const</span> <span class="keywordtype">char</span> *s2) {</div>
<div class="line"> <span class="keywordflow">if</span> (!s1 || !s2)</div>
<div class="line"> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"> <span class="keywordflow">return</span> strcmp(s1, s2) == 0;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">bool</span> auth_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__httpauth.html">sg_httpauth</a> *auth,</div>
<div class="line"> __SG_UNUSED <span class="keyword">struct</span> <a id="_a1" name="_a1"></a><a class="code hl_struct" href="structsg__httpreq.html">sg_httpreq</a> *req,</div>
<div class="line"> __SG_UNUSED <span class="keyword">struct</span> <a id="_a2" name="_a2"></a><a class="code hl_struct" href="structsg__httpres.html">sg_httpres</a> *res) {</div>
<div class="line"> <span class="keywordtype">bool</span> pass;</div>
<div class="line"> <a id="a3" name="a3"></a><a class="code hl_function" href="group__sg__httpsrv.html#ga78b34ec8d2d39688d282ea86a4c6ba73">sg_httpauth_set_realm</a>(auth, <span class="stringliteral">"My realm"</span>);</div>
<div class="line"> pass = strmatch(<a id="a4" name="a4"></a><a class="code hl_function" href="group__sg__httpsrv.html#ga3f072a49f68e308bfbbdeb90f0e6ffcc">sg_httpauth_usr</a>(auth), <span class="stringliteral">"abc"</span>) &&</div>
<div class="line"> strmatch(<a id="a5" name="a5"></a><a class="code hl_function" href="group__sg__httpsrv.html#ga8feeee337e2e3a15616a3cef8f32da8c">sg_httpauth_pwd</a>(auth), <span class="stringliteral">"123"</span>);</div>
<div class="line"> <span class="keywordflow">if</span> (!pass)</div>
<div class="line"> <a id="a6" name="a6"></a><a class="code hl_function" href="group__sg__httpsrv.html#ga779cd662cde2665280dda20a27e6ced6">sg_httpauth_deny</a>(auth,</div>
<div class="line"> <span class="stringliteral">"<html><head><title>Denied</title></head><body><font "</span></div>
<div class="line"> <span class="stringliteral">"color=\"red\">Go away</font></body></html>"</span>,</div>
<div class="line"> <span class="stringliteral">"text/html; charset=utf-8"</span>);</div>
<div class="line"> <span class="keywordflow">return</span> pass;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">void</span> err_cb(__SG_UNUSED <span class="keywordtype">void</span> *cls, <span class="keyword">const</span> <span class="keywordtype">char</span> *err) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"%s"</span>, err);</div>
<div class="line"> fflush(stderr);</div>
<div class="line">}</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, __SG_UNUSED <span class="keyword">struct</span> <a class="code hl_struct" href="structsg__httpreq.html">sg_httpreq</a> *req,</div>
<div class="line"> <span class="keyword">struct</span> <a class="code hl_struct" href="structsg__httpres.html">sg_httpres</a> *res) {</div>
<div class="line"> <a id="a7" name="a7"></a><a class="code hl_define" href="group__sg__httpsrv.html#gae64c67ed9caee0189cf4fd669a869255">sg_httpres_send</a>(res,</div>
<div class="line"> <span class="stringliteral">"<html><head><title>Secret</title></head><body><font "</span></div>
<div class="line"> <span class="stringliteral">"color=\"green\">Secret page</font></body></html>"</span>,</div>
<div class="line"> <span class="stringliteral">"text/html; charset=utf-8"</span>, 200);</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="_a8" name="_a8"></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="a9" name="a9"></a><a class="code hl_function" href="group__sg__httpsrv.html#ga1b4aeda3e1c1eee97bf2069403b78d0d">sg_httpsrv_new2</a>(auth_cb, req_cb, err_cb, NULL);</div>
<div class="line"> <span class="keywordflow">if</span> (!<a id="a10" name="a10"></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="a11" name="a11"></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="a12" name="a12"></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_ga1b4aeda3e1c1eee97bf2069403b78d0d"><div class="ttname"><a href="group__sg__httpsrv.html#ga1b4aeda3e1c1eee97bf2069403b78d0d">sg_httpsrv_new2</a></div><div class="ttdeci">struct sg_httpsrv * sg_httpsrv_new2(sg_httpauth_cb auth_cb, sg_httpreq_cb req_cb, sg_err_cb err_cb, void *cls) __attribute__((malloc))</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_ga3f072a49f68e308bfbbdeb90f0e6ffcc"><div class="ttname"><a href="group__sg__httpsrv.html#ga3f072a49f68e308bfbbdeb90f0e6ffcc">sg_httpauth_usr</a></div><div class="ttdeci">const char * sg_httpauth_usr(struct sg_httpauth *auth)</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_ga779cd662cde2665280dda20a27e6ced6"><div class="ttname"><a href="group__sg__httpsrv.html#ga779cd662cde2665280dda20a27e6ced6">sg_httpauth_deny</a></div><div class="ttdeci">int sg_httpauth_deny(struct sg_httpauth *auth, const char *reason, const char *content_type)</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_ga78b34ec8d2d39688d282ea86a4c6ba73"><div class="ttname"><a href="group__sg__httpsrv.html#ga78b34ec8d2d39688d282ea86a4c6ba73">sg_httpauth_set_realm</a></div><div class="ttdeci">int sg_httpauth_set_realm(struct sg_httpauth *auth, const char *realm)</div></div>
<div class="ttc" id="agroup__sg__httpsrv_html_ga8feeee337e2e3a15616a3cef8f32da8c"><div class="ttname"><a href="group__sg__httpsrv.html#ga8feeee337e2e3a15616a3cef8f32da8c">sg_httpauth_pwd</a></div><div class="ttdeci">const char * sg_httpauth_pwd(struct sg_httpauth *auth)</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="asagui_8h_html"><div class="ttname"><a href="sagui_8h.html">sagui.h</a></div></div>
<div class="ttc" id="astructsg__httpauth_html"><div class="ttname"><a href="structsg__httpauth.html">sg_httpauth</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>
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