SQL 삽입

<div class="sd"><div class="sd-head"><strong>SQL INJECTION</strong><span id="state">live check</span></div><div class="sd-stage"><div class="query mono" id="query">name = input</div><div class="split"><div class="tile bad" id="concat">concat: changed query</div><div class="tile good" id="param">parameter: data only</div></div></div><div class="sd-foot"><span id="caption">checking boundary</span><span>tap to step</span></div></div>

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let n=0;function advance(){n=1-n;document.getElementById('query').textContent=n?'SELECT … WHERE name = ?':'SELECT … WHERE name = '+String.fromCharCode(39)+'x'+String.fromCharCode(39)+' OR 1=1';document.getElementById('concat').classList.toggle('focus',!n);document.getElementById('param').classList.toggle('focus',!!n);document.getElementById('state').textContent=n?'bound value':'string concatenation';document.getElementById('caption').textContent=n?'input remains a value':'input alters query logic'}advance();setInterval(advance,950);
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