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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2142/">https://reviewboard.asterisk.org/r/2142/</a>
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<p style="margin-top: 0;">On October 2nd, 2012, 5:37 p.m., <b>opticron</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2142/diff/1/?file=31677#file31677line4909" style="color: black; font-weight: bold; text-decoration: underline;">/certified/branches/1.8.15/main/manager.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; ">static int do_message(struct mansession *s)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></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">s</span><span class="o">-></span><span class="n">parsing</span> <span class="o">!=</span> <span class="n">MESSAGE_OKAY</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">mansession_lock</span><span class="p">(</span><span class="n">s</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">astman_send_error</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="o">&</span><span class="n">m</span><span class="p">,</span> <span class="s">"Failed to parse message."</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; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">s</span><span class="o">-></span><span class="n">parsing</span> <span class="o">=</span> <span class="n">MESSAGE_OKAY</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">mansession_unlock</span><span class="p">(</span><span class="n">s</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; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">res</span> <span class="o">=</span> <span class="mi">0</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;">Assuming this code is targeted toward future changes, this would be better served by a switch that handles all possible values of the enum (no default) since building Asterisk in dev mode will catch this at compile time and force the developer to handle the new case statement instead of handling it at runtime with a generic error.</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;">Good point. I have no idea why I didn't think of that.</pre>
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<p>- David</p>
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<p>On October 2nd, 2012, 11:07 a.m., David Lee wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By David Lee.</div>
<p style="color: grey;"><i>Updated Oct. 2, 2012, 11:07 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;">In AMI's parser, when it receives a long line (> 1024 characters), it discards that line, but continues to process the message normally.
Typically, this is not a problem because a) who has lines that long and b) usually a discarded line results in an invalid message. But if that line is specifying an optional field, then the message will be processed, you get a 'Response: Success', but things don't work the way you expected them to.
This patch changes the behavior when a long-too-long parse error occurs.
* Changes the log message to avoid way-too-long (and truncated anyways) log messages
* Adds a 'parsing' status flag to Response: Success
* Sets parsing = MESSAGE_LINE_TOO_LONG if, well, a line is too long
* Responds with an appropriate error if parsing != MESSAGE_OKAY</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;">Used netcat to send commands with AMI, verifying that commands with long lines were rejected, and commands without long lines received after that were accepted.</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/AST-961">AST-961</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/certified/branches/1.8.15/main/manager.c <span style="color: grey">(374105)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2142/diff/" style="margin-left: 3em;">View Diff</a></p>
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