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<a href="https://gitlab.com/Vrancken">Tom</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/650#note_118863719">lib/auth/cert.c</a>:
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<pre style="margin: 0;">+<span id="LC679" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC680" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC681" class="line" lang="c"></span>
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<pre style="margin: 0;"> <span id="LC682" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">int</span></span>
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<pre style="margin: 0;"> <span id="LC683" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">_gnutls_gen_cert_client_crt</span><span class="p">(</span><span class="n" style="color: #333;">gnutls_session_t</span> <span class="n" style="color: #333;">session</span><span class="p">,</span> <span class="n" style="color: #333;">gnutls_buffer_st</span> <span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">data</span><span class="p">)</span></span>
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580
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<pre style="margin: 0;"> <span id="LC684" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;">-<span id="LC581" class="line" lang="c"> <span class="k" style="font-weight: 600;">switch</span> <span class="p">(</span><span class="n" style="color: #333;">session</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">security_parameters</span><span class="p">.</span><span class="n" style="color: #333;">client_ctype</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">-<span id="LC582" class="line" lang="c"> <span class="k" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">GNUTLS_CRT_X509</span><span class="p">:</span></span>
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<pre style="margin: 0;">-<span id="LC583" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">gen_x509_crt</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">,</span> <span class="n" style="color: #333;">data</span><span class="p">);</span></span>
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<pre style="margin: 0;">-<span id="LC584" class="line" lang="c"> <span class="nl">default:</span></span>
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<pre style="margin: 0;">-<span id="LC585" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_assert</span><span class="p">();</span></span>
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<pre style="margin: 0;">-<span id="LC586" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">GNUTLS_E_INTERNAL_ERROR</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC685" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_certificate_type_t</span> <span class="n" style="color: #333;">cert_type</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC686" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC687" class="line" lang="c"> <span class="c1" style="color: #998; font-style: italic;">// Retrieve the (negotiated) certificate type for the client</span></span>
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<pre style="margin: 0;">+<span id="LC688" class="line" lang="c"> <span class="n" style="color: #333;">cert_type</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gnutls_certificate_type_get2</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">,</span> <span class="n" style="color: #333;">GNUTLS_CTYPE_CLIENT</span><span class="p">);</span></span>
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<p dir="auto">I don't see this function as an external API only. The benefit of calling this function is that if we decide to change the internal structure of the values that this function retrieves we don't have to update all the parts of the code that access these values but only have to update this function.</p>
<p dir="auto">Since I've dealt with internal structure changes a couple of times since I've been working on this project I see a great benefit of my approach ;-). What do see as a disadvantage of calling this function?</p>
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