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<a href="https://gitlab.com/albrechtd">Albrecht Dreß</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1314#note_404203938">src/serv.c</a>:
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1058
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<td class="diff-line-num new_line" data-linenumber="1059" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1059" class="line" lang="c"> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">response</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">peer_print_data</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">,</span> <span class="n" style="color: #333;">response_length</span><span class="p">);</span></span>
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<td class="diff-line-num new_line" data-linenumber="1060" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1060" class="line" lang="c"> <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>
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<td class="diff-line-num new_line" data-linenumber="1061" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1061" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">ret</span><span class="p">;</span></span>
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<td class="diff-line-num new_line old" data-linenumber="1062" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1061" class="line" lang="c"> <span class="n" style="color: #333;">strip</span><span class="p">(</span><span class="n" style="color: #333;">request</span><span class="p">);</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1062" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1062" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">strip_crlf</span> <span class="o" style="font-weight: 600;">!=</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1063" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1063" class="line" lang="c"> <span class="n" style="color: #333;">strip</span><span class="p">(</span><span class="n" style="color: #333;">request</span><span class="p">);</span></span>
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<td class="diff-line-num new_line" data-linenumber="1064" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1064" 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;">"received cmd: %s</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">,</span> <span class="n" style="color: #333;">request</span><span class="p">);</span></span>
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<p dir="auto"><a href="https://gitlab.com/airtower-luna" data-user="2904500" data-reference-type="user" data-container="body" data-placement="top" class="gfm gfm-project_member js-user-link" title="Airtower">@airtower-luna</a> noted:</p>
<blockquote dir="auto" style="color: #7f8fa4; border-left-width: 3px; border-left-color: #eaeaea; border-left-style: solid; margin: 0; padding: 0 0 0 15px;">
<p>Not calling strip() will effectively add a newline here</p>
</blockquote>
<p dir="auto">I don't think so…</p>
<p dir="auto"><code>strip(request)</code> replaces the first occurrence of the sequence <code>\r\n\0</code> in <code>request</code> by <code>\n\0\0</code>. When running in echo mode, this breaks peers which expect the transmitted message being bounced back <em>without</em> modification.</p>
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