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<a href="https://gitlab.com/ZoltanFridrich">Zoltán Fridrich</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1512#note_849578988">lib/ext/compress_certificate.c</a>:
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160
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC160" class="line" lang="c"></span>
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<td class="new_line diff-line-num new" data-linenumber="161" 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">
161
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC161" class="line" lang="c"> <span class="n" style="color: #333;">DECR_LEN</span><span class="p">(</span><span class="n" style="color: #333;">data_size</span><span class="p">,</span> <span class="n" style="color: #333;">algs_size</span><span class="p">);</span></span>
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<td class="new_line diff-line-num new" data-linenumber="162" 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">
162
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC162" class="line" lang="c"> <span class="n" style="color: #333;">memcpy</span><span class="p">(</span><span class="n" style="color: #333;">algs</span><span class="p">,</span> <span class="n" style="color: #333;">data</span> <span class="o" style="font-weight: 600;">+</span> <span class="mi" style="color: #099;">1</span><span class="p">,</span> <span class="n" style="color: #333;">algs_size</span><span class="p">);</span></span>
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<td class="new_line diff-line-num new" data-linenumber="163" 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">
163
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC163" class="line" lang="c"> <span class="n" style="color: #333;">algs_size</span> <span class="o" style="font-weight: 600;">/=</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint16_t</span><span class="p">);</span></span>
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<td class="new_line diff-line-num new" data-linenumber="164" 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">
164
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC164" class="line" lang="c"></span>
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<td class="new_line diff-line-num new" data-linenumber="165" 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">
165
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC165" 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;">unsigned</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;">algs_size</span><span class="p">;</span> <span class="o" style="font-weight: 600;">++</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="new_line diff-line-num new" data-linenumber="166" 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">
166
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC166" class="line" lang="c"> <span class="n" style="color: #333;">tmp</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_read_uint16</span><span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)(</span><span class="n" style="color: #333;">algs</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">i</span><span class="p">));</span></span>
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<td class="new_line diff-line-num new" data-linenumber="167" 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">
167
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC167" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">_gnutls_compress_certificate_num2method</span><span class="p">(</span><span class="n" style="color: #333;">tmp</span><span class="p">)</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">GNUTLS_COMP_UNKNOWN</span><span class="p">)</span></span>
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<td class="new_line diff-line-num new" data-linenumber="168" 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">
168
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC168" 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;">GNUTLS_E_RECEIVED_ILLEGAL_PARAMETER</span><span class="p">);</span></span>
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169
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC169" class="line" lang="c"> <span class="p">}</span></span>
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170
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<td class="new_line diff-line-num new" data-linenumber="171" 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">
171
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC171" class="line" lang="c"> <span class="n" style="color: #333;">memcpy</span><span class="p">(</span><span class="n" style="color: #333;">priv_algs</span><span class="p">,</span> <span class="n" style="color: #333;">priv</span><span class="p">.</span><span class="n" style="color: #333;">data</span><span class="p">,</span> <span class="n" style="color: #333;">priv</span><span class="p">.</span><span class="n" style="color: #333;">size</span><span class="p">);</span></span>
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<td class="new_line diff-line-num new" data-linenumber="172" 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">
172
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC172" class="line" lang="c"> <span class="n" style="color: #333;">priv_algs_size</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">priv</span><span class="p">.</span><span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;">/</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint16_t</span><span class="p">);</span></span>
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173
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC173" class="line" lang="c"></span>
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<td class="new_line diff-line-num new" data-linenumber="174" 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">
174
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC174" 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;">unsigned</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;">algs_size</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">method</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">GNUTLS_COMP_UNKNOWN</span><span class="p">;</span> <span class="o" style="font-weight: 600;">++</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<td class="new_line diff-line-num new" data-linenumber="175" 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">
175
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC175" 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;">unsigned</span> <span class="n" style="color: #333;">j</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;">j</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">priv_algs_size</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">method</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">GNUTLS_COMP_UNKNOWN</span><span class="p">;</span> <span class="o" style="font-weight: 600;">++</span><span class="n" style="color: #333;">j</span><span class="p">)</span></span>
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<p dir="auto">Does this makes sense here?
Currently the peers request has precedence before the local supported compression list. That means, if server requests client to compress his cert, the servers requested methods will always have precedence. Analogously it holds for client. Would it make sense to prefer servers compression list before the clients request?</p>
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