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<p style="color: #777777;">
<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1345#note_438798874">src/psk.c</a>:
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<pre style="margin: 0;">+<span id="LC217" class="line" lang="c">    <span class="cm" style="color: #998; font-style: italic;">/* encode username if it contains special characters */</span></span>
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">strcspn</span><span class="p">(</span><span class="n" style="color: #333;">username</span><span class="p">,</span> <span class="s" style="color: #d14;">":</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">)</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">strlen</span><span class="p">(</span><span class="n" style="color: #333;">username</span><span class="p">))</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC219" class="line" lang="c">            <span class="kt" style="color: #458; font-weight: 600;">char</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">new_data</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC220" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC221" class="line" lang="c">            <span class="n" style="color: #333;">tmp</span><span class="p">.</span><span class="n" style="color: #333;">data</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">username</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC222" class="line" lang="c">            <span class="n" style="color: #333;">tmp</span><span class="p">.</span><span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">strlen</span><span class="p">(</span><span class="n" style="color: #333;">username</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC223" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC224" class="line" lang="c">            <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gnutls_hex_encode2</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">tmp</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">_username</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC225" class="line" lang="c">            <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC226" class="line" lang="c">                    <span class="n" style="color: #333;">fprintf</span><span class="p">(</span><span class="n" style="color: #333;">stderr</span><span class="p">,</span> <span class="s" style="color: #d14;">"HEX encoding error</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC227" class="line" lang="c">                    <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC228" class="line" lang="c">                    <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">out</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC229" class="line" lang="c">            <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC230" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC231" class="line" lang="c">            <span class="cm" style="color: #998; font-style: italic;">/* prepend '#' */</span></span>
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<pre style="margin: 0;">+<span id="LC232" class="line" lang="c">            <span class="n" style="color: #333;">new_data</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gnutls_realloc</span><span class="p">(</span><span class="n" style="color: #333;">_username</span><span class="p">.</span><span class="n" style="color: #333;">data</span><span class="p">,</span> <span class="n" style="color: #333;">_username</span><span class="p">.</span><span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;">+</span> <span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
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<p dir="auto">Good catch indeed, fixed!</p>
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