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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2162/">https://reviewboard.asterisk.org/r/2162/</a>
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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;">Thanks for the quick review.</pre>
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<p style="margin-top: 0;">On October 12th, 2012, 4:25 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2162/diff/2/?file=31859#file31859line2678" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/chan_sip.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum message_integrity {</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="n">sip_cfg</span><span class="p">.</span><span class="n">pedanticsipchecking</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="cm">/* Using a ast_str because lws2sws takes one of those */</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="hl"> </span><span class="k"><span class="hl">struct</span></span><span class="hl"> </span><span class="n"><span class="hl">ast_str</span></span><span class="hl"> </span><span class="o"><span class="hl">*</span></span><span class="n">msg_copy</span> <span class="o">=</span> <span class="n">ast_str_create</span><span class="p">(</span><span class="n">strlen</span><span class="p">(</span><span class="n">message</span><span class="p">))<span class="hl">;</span></span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="hl"> </span><span class="k"><span class="hl">if</span></span><span class="hl"> </span><span class="p"><span class="hl">(</span></span><span class="o"><span class="hl">!</span></span><span class="p"><span class="hl">(</span></span><span class="n">msg_copy</span> <span class="o">=</span> <span class="n">ast_str_create</span><span class="p">(</span><span class="n">strlen</span><span class="p">(</span><span class="n">message</span><span class="p">))<span class="hl">))</span></span><span class="hl"> </span><span class="p"><span class="hl">{</span></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 think strlen + 1 for terminator is needed.</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;">You're absolutely right.</pre>
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<p style="margin-top: 0;">On October 12th, 2012, 4:25 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2162/diff/2/?file=31859#file31859line2696" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/chan_sip.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum message_integrity {</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">content_length_str</span> <span class="o">=</span> <span class="n">strcasestr</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s">Content-Length:"</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="n">content_length_str</span> <span class="o">=</span> <span class="n">strcasestr</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s">Content-Length:"</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 class="hl">!</span></span><span class="n">content_length<span class="hl">_str</span></span><span class="hl"> </span><span class="o"><span class="hl">&&</span></span><span class="hl"> </span><span class="o"><span class="hl">!</span></span><span class="p"><span class="hl">(</span></span><span class="n"><span class="hl">l</span>_str</span> <span class="o">=</span> <span class="n">strcasestr</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s"><span class="hl">l</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 class="hl">(</span></span><span class="n">content_length_str</span> <span class="o">=</span> <span class="n">strcasestr</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s"><span class="hl">Content-Length</span>:"</span><span class="p">)))</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;">Duplicate strcasestr here.</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;">Fixed.</pre>
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<p style="margin-top: 0;">On October 12th, 2012, 4:25 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2162/diff/2/?file=31859#file31859line2698" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/channels/chan_sip.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum message_integrity {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">content_length_str</span> <span class="o">+=</span> <span class="k">sizeof</span><span class="p">(</span><span class="s">"</span><span class="se">\n</span><span class="s">Content-Length:"</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">((</span><span class="n">content_length_str</span> <span class="o">=</span> <span class="n">strcasestr</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s">l:"</span><span class="p">)))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">content_length_str</span> <span class="o">+=</span> <span class="k">sizeof</span><span class="p">(</span><span class="s">"</span><span class="se">\n</span><span class="s">l:"</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;">The sizeof("string") count includes the null terminator so I think you are advancing too far.</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;">This is where I whisper something about not copying my tests verbatim ;)</pre>
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<p>- wdoekes</p>
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<p>On October 12th, 2012, 3:40 p.m., wdoekes wrote:</p>
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<div>Review request for Asterisk Developers and Mark Michelson.</div>
<div>By wdoekes.</div>
<p style="color: grey;"><i>Updated Oct. 12, 2012, 3:40 p.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;">I was a bit quick on the ship-it there ;)
Those strdupa's are far from safe from direct user input.
Here's a fix, which happens to slightly faster too.</pre>
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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;">Got asterisk to crash easily before patch. No crash after. Mark's test from r2123 still completes with 0 errors.</pre>
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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/chan_sip.c <span style="color: grey">(374930)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2162/diff/" style="margin-left: 3em;">View Diff</a></p>
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