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<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/917#note_174851887">lib/psk.c</a>:
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<pre style="margin: 0;">+<span id="LC402" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The callback function should return 0 on success.</span></span>
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<td class="diff-line-num new new_line" data-linenumber="403" 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="LC403" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * -1 indicates an error.</span></span>
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<pre style="margin: 0;">+<span id="LC404" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> **/</span></span>
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<td class="diff-line-num new new_line" data-linenumber="405" 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="LC405" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span></span>
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<td class="diff-line-num new new_line" data-linenumber="406" 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="LC406" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">gnutls_psk_set_client_credentials_function2</span><span class="p">(</span><span class="n" style="color: #333;">gnutls_psk_client_credentials_t</span> <span class="n" style="color: #333;">cred</span><span class="p">,</span></span>
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<td class="diff-line-num new new_line" data-linenumber="407" 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="LC407" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_psk_client_credentials_function2</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">func</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC408" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC409" class="line" lang="c"> <span class="n" style="color: #333;">cred</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">get_function</span><span class="p">.</span><span class="n" style="color: #333;">cb2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">func</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC410" class="line" lang="c"> <span class="n" style="color: #333;">cred</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">function_in_use</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">2</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC411" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC412" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC413" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC414" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span></span>
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<pre style="margin: 0;">+<span id="LC415" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">username_has_embedded_nulls</span><span class="p">(</span><span class="n" style="color: #333;">psk_auth_info_t</span> <span class="n" style="color: #333;">info</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC416" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC417" class="line" lang="c"> <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint16_t</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">info</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">len</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>
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<p dir="auto">It seems it is in <code>x509/email-verify.c</code> and duplicated in <code>x509/hostname-verify.c</code>. What about moving it to str.h and sharing it?</p>
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