<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<title>
GitLab
</title>



<style>img {
max-width: 100%; height: auto;
}
</style>
</head>
<body>
<div class="content">
<p class="details" style="font-style: italic; color: #777;">
<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/708#note_91815421">lib/record.c</a>:
</p>
<table>
<tr class="line_holder" id="">
<td class="diff-line-num old_line" data-linenumber="1185" 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">
1185
</td>
<td class="diff-line-num new_line" data-linenumber="1186" 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">
1186
</td>
<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1186" class="line" lang="c">        <span class="n" style="color: #333;">record_check_version</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">,</span> <span class="n" style="color: #333;">htype</span><span class="p">,</span> <span class="n" style="color: #333;">record</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">version</span><span class="p">))</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="">
<td class="diff-line-num old_line" data-linenumber="1186" 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">
1186
</td>
<td class="diff-line-num new_line" data-linenumber="1187" 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">
1187
</td>
<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1187" class="line" lang="c">           <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">gnutls_assert_val</span><span class="p">(</span><span class="n" style="color: #333;">ret</span><span class="p">);</span></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="">
<td class="diff-line-num old_line" data-linenumber="1187" 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">
1187
</td>
<td class="diff-line-num new_line" data-linenumber="1188" 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">
1188
</td>
<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1188" class="line" lang="c"></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="diff-line-num old old_line" data-linenumber="1188" 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">
1188
</td>
<td class="diff-line-num new_line old" data-linenumber="1189" 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">
 
</td>
<td class="line_content noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC1188" class="line" lang="c">   <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">record</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">length</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">record</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">length</span> <span class="o" style="font-weight: 600;">></span> <span class="n" style="color: #333;">max_record_recv_size</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">))</span> <span class="p">{</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="">
<td class="diff-line-num new old_line" data-linenumber="1189" 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">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="1189" 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">
1189
</td>
<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1189" class="line" lang="c">   <span class="cm" style="color: #998; font-style: italic;">/* Checks for empty records are done after decryption, in</span></span>
</pre>
</td>
</tr>

</table>
<div>
<p dir="auto">That is to distinguish the following cases:</p>
<ul dir="auto">
<li>an empty Handshake message follows an incomplete Handshake message</li>
<li>an empty Application Data message follows an incomplete Handshake message.</li>
</ul>
<p dir="auto">Both cases are error, but the latter should send unexpected_message alert.  Note that under TLS 1.3, all encrypted records have the Application Data content type, and it is not possible to determine the actual content type at this point.</p>
</div>


</div>
<div class="footer" style="margin-top: 10px;">
<p style="font-size: small; color: #777;">

<br>
Reply to this email directly or
<a href="https://gitlab.com/gnutls/gnutls/merge_requests/708#note_91815421">view it on GitLab</a>.
<br>
You're receiving this email because of your account on gitlab.com.
If you'd like to receive fewer emails, you can
<a href="https://gitlab.com/sent_notifications/bb13093e1f3556ec9e138c494adf82f4/unsubscribe">unsubscribe</a>
from this thread or
adjust your notification settings.
<script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","action":{"@type":"ViewAction","name":"View Merge request","url":"https://gitlab.com/gnutls/gnutls/merge_requests/708#note_91815421"}}</script>
</p>
</div>
</body>
</html>