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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2295/">https://reviewboard.asterisk.org/r/2295/</a>
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<p style="margin-top: 0;">On January 28th, 2013, 11:25 a.m., <b>Matt Jordan</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2295/diff/1/?file=33115#file33115line51" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/sip/sdp_crypto.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">ASTERISK_FILE_VERSION(__FILE__, "$Revision$")</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">char</span> <span class="o">*</span><span class="n">tag</span><span class="p">;</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Since the tag is miniscule (or should be), we could probably make this a char[] of fixed size, similar to everything else in here.
Alternatively, we *could* just make the whole thing string fields.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The other fields have well-defined max lengths, based on the protocol. Since 'should be minuscule' doesn't always translate to 'is minuscule', I'm just going to leave this as-is.</pre>
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<p style="margin-top: 0;">On January 28th, 2013, 11:25 a.m., <b>Matt Jordan</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2295/diff/1/?file=33115#file33115line283" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/sip/sdp_crypto.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int sdp_crypto_process(struct sdp_crypto *p, const char *attr, struct ast_rtp_instance *rtp)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">p</span><span class="o">-></span><span class="n"><span class="hl">a_crypto</span></span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">p</span><span class="o">-></span><span class="n"><span class="hl">tag</span></span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">p</span><span class="o">-></span><span class="n">a_crypto</span> <span class="o">=</span> <span class="n">ast_calloc</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">attr_len</span> <span class="o">+</span> <span class="mi">11</span><span class="p">)))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_DEBUG</span><span class="p">,</span> <span class="s">"Accepting crypto tag %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">tag</span><span class="p">);</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_ERROR</span><span class="p">,</span> <span class="s">"Could not allocate memory for a_crypto</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_free</span><span class="p">(</span><span class="n">p</span><span class="o">-></span><span class="n">tag</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">We probably don't need to free p->tag if its already NULL, which you're guaranteed since we create p in this function.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Ha! Good point. will fix.</pre>
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<p style="margin-top: 0;">On January 28th, 2013, 11:25 a.m., <b>Matt Jordan</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2295/diff/1/?file=33115#file33115line290" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/sip/sdp_crypto.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int sdp_crypto_process(struct sdp_crypto *p, const char *attr, struct ast_rtp_instance *rtp)</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">snprintf</span><span class="p">(</span><span class="n">p</span><span class="o">-></span><span class="n">a_crypto</span><span class="p">,</span> <span class="n">attr_len</span> <span class="o">+</span> <span class="mi">10</span><span class="p">,</span> <span class="s">"a=crypto:%s %s inline:%s</span><span class="se">\r\n</span><span class="s">"</span><span class="p">,</span> <span class="n">tag</span><span class="p">,</span> <span class="n">suite</span><span class="p">,</span> <span class="n">p</span><span class="o">-></span><span class="n">local_key64</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I am a little concerned about removing this. Prior to this code change, you were guaranteed that p had the crypto attribute constructed when it came out of this method; now you're guaranteed that it has the pieces and parts to do so.
This may be okay, but we might want to do another look over to verify.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I think it's okay, but for completeness I can call sdp_crypto_offer() on return here.</pre>
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<p>- David</p>
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<p>On January 28th, 2013, 9:48 a.m., David Lee wrote:</p>
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<div>Review request for Asterisk Developers and Matt Jordan.</div>
<div>By David Lee.</div>
<p style="color: grey;"><i>Updated Jan. 28, 2013, 9:48 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The original fix (r380043) for getting Asterisk to respond with the correct
tag overlooked some corner cases, and the fact that the same code is in 1.8.
This patch moves the building of the crypto line out of
sdp_crypto_process(). Instead, it merely copies the accepted tag. The call to
sdp_crypto_offer() will build the crypto line in all cases now, using a tag of
"1" in the case of sending offers.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Mades some calls using SRTP using a snom 820.</pre>
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<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-20849">ASTERISK-20849</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/1.8/channels/sip/sdp_crypto.c <span style="color: grey">(380244)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2295/diff/" style="margin-left: 3em;">View Diff</a></p>
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