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<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
started a new discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/650#note_118714459">lib/auth/cert.c</a>:
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<pre style="margin: 0;">+<span id="LC643" 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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<pre style="margin: 0;">+<span id="LC644" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_pcert_st</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">apr_cert_list</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC645" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_privkey_t</span> <span class="n" style="color: #333;">apr_pkey</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC646" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">apr_cert_list_length</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC647" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="648" 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="LC648" class="line" lang="c"> <span class="c1" style="color: #998; font-style: italic;">// Retrieve the appropriate certificate</span></span>
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<td class="diff-line-num new new_line" data-linenumber="649" 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="LC649" 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="n" style="color: #333;">_gnutls_get_selected_cert</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">apr_cert_list</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC650" class="line" lang="c"> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">apr_cert_list_length</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">apr_pkey</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 class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC651" 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>
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<pre style="margin: 0;">+<span id="LC652" class="line" lang="c"> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC653" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC654" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Since we are transmitting a raw public key with no additional</span></span>
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<pre style="margin: 0;">+<span id="LC655" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * certificate credentials attached to it, it doesn't make sense to</span></span>
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<pre style="margin: 0;">+<span id="LC656" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * have more than one certificate set (i.e. to have a certificate chain).</span></span>
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<pre style="margin: 0;">+<span id="LC657" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC658" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">apr_cert_list_length</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="p">{</span></span>
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<p dir="auto">nit: it would have been simpler to return the error immediately if the list does not equal one. Since you are testing for validity of the cert structure nevertheless, why don't you check that the certificate is of RAW type?</p>
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