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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1682/">https://reviewboard.asterisk.org/r/1682/</a>
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<a href="https://reviewboard.asterisk.org/r/1682/diff/3/?file=23504#file23504line560" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_mixmonitor.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void *mixmonitor_thread(void *obj)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_asprintf</span><span class="p">(</span><span class="n">datastore_id</span><span class="p">,</span> <span class="s">"%p"</span><span class="p">,</span> <span class="n">mixmonitor_ds</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Check the return of ast_asprintf() in case there was an allocation failure. It will return -1 if it was unable to allocate memory.</pre>
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<a href="https://reviewboard.asterisk.org/r/1682/diff/3/?file=23504#file23504line630" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_mixmonitor.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void launch_monitor_thread(struct ast_channel *chan, const char *filename,</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">datastore_id</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">631</font></th>
<td bgcolor="#c5ffc4" 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">datastore_id</span><span class="p">);</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">632</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">It's perfectly valid to free NULL pointers. You don't have to have the if around the ast_free() call</pre>
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<a href="https://reviewboard.asterisk.org/r/1682/diff/3/?file=23504#file23504line636" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_mixmonitor.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void launch_monitor_thread(struct ast_channel *chan, const char *filename,</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">636</font></th>
<td bgcolor="#c5ffc4" 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">ast_strlen_zero</span><span class="p">(</span><span class="n">uid_channel_var</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">637</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">datastore_id</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; "></pre></td>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">638</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">pbx_builtin_setvar_helper</span><span class="p">(</span><span class="n">chan</span><span class="p">,</span> <span class="n">uid_channel_var</span><span class="p">,</span> <span class="n">datastore_id</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>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">639</font></th>
<td bgcolor="#c5ffc4" 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">datastore_id</span><span class="p">);</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">640</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">641</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">You need to be sure to free datastore_id even if ast_strlen_zero(uid_channel_var) evaluates true. You've got a memory leak as it is right now.</pre>
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<a href="https://reviewboard.asterisk.org/r/1682/diff/3/?file=23504#file23504line772" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_mixmonitor.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static char *filename_parse(char *filename, char *buffer, size_t len)</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">771</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">ast_test_flag</span><span class="p">(</span><span class="o">&</span><span class="n">flags</span><span class="p">,</span> <span class="n">MUXFLAG_UID</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; "></pre></td>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">772</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">uid_channel_var</span> <span class="o">=</span> <span class="n">ast_strdupa</span><span class="p">(</span><span class="n">opts</span><span class="p">[</span><span class="n">OPT_ARG_UID</span><span class="p">]);</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">773</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I believe you can do away with the ast_strdupa call here and pass opts[OPT_ARG_UID] directly into launch_monitor_thread</pre>
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<a href="https://reviewboard.asterisk.org/r/1682/diff/3/?file=23504#file23504line881" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_mixmonitor.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static char *handle_cli_mixmonitor(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)</pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">823</font></th>
<td bgcolor="#ffffff" 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">strcasecmp</span><span class="p">(</span><span class="n">a</span><span class="o">-></span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s">"start"</span><span class="p">))</span> <span class="p">{</span></pre></td>
<th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">876</font></th>
<td bgcolor="#ffffff" 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">strcasecmp</span><span class="p">(</span><span class="n">a</span><span class="o">-></span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s">"start"</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">824</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">mixmonitor_exec</span><span class="p">(</span><span class="n">chan</span><span class="p">,</span> <span class="n">a</span><span class="o">-></span><span class="n">argv</span><span class="p">[</span><span class="mi">3</span><span class="p">]);</span></pre></td>
<th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">877</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">mixmonitor_exec</span><span class="p">(</span><span class="n">chan</span><span class="p">,</span> <span class="n">a</span><span class="o">-></span><span class="n">argv</span><span class="p">[</span><span class="mi">3</span><span class="p">]);</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">825</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_channel_unlock</span><span class="p">(</span><span class="n">chan</span><span class="p">);</span></pre></td>
<th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">878</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_channel_unlock</span><span class="p">(</span><span class="n">chan</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>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">879</font></th>
<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="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">a</span><span class="o">-></span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s">"stop"</span><span class="p">)){</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">880</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_channel_unlock</span><span class="p">(</span><span class="n">chan</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>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">881</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">stop_mixmonitor_exec</span><span class="p">(</span><span class="n">chan</span><span class="p">,</span> <span class="n">a</span><span class="o">-></span><span class="n">argv</span><span class="p">[</span><span class="mi">3</span><span class="p">]);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Since the args for the various mixmonitor commands are optional, referencing a->argv[3] may be referencing memory off the end of the argv array. These two commands need to be updated to make sure that argc > 3 before trying to reference argv[3]. Otherwise pass an empty string.</pre>
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<a href="https://reviewboard.asterisk.org/r/1682/diff/3/?file=23504#file23504line1023" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_mixmonitor.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int manager_mixmonitor(struct mansession *s, const struct message *m)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">uid_channel_var</span> <span class="o">=</span> <span class="n">ast_strdupa</span><span class="p">(</span><span class="n">opts</span><span class="p">[</span><span class="n">OPT_ARG_UID</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">mixmonitor_id</span> <span class="o">=</span> <span class="n">pbx_builtin_getvar_helper</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">uid_channel_var</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">You can do away with the ast_strdupa() call here and just pass opts[OPT_ARG_UID] in directly to pbx_builtin_getvar_helper.</pre>
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<p>- Mark</p>
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<p>On January 20th, 2012, 5:02 p.m., jrose wrote:</p>
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<div>Review request for Asterisk Developers, Mark Michelson and telecos.</div>
<div>By jrose.</div>
<p style="color: grey;"><i>Updated Jan. 20, 2012, 5:02 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;">Fixes style problems from r6 on https://reviewboard.asterisk.org/r/1643/
Changes creation of character buffer to length of a pointer in characters + 3 (2 for 0x, 1 for terminating space)
That might not be adequate. Richard was saying something about pointers on other operating systems having other dividing symbols in them. Well, at least ':'s.
In my experiences though, a pointer is usually just something like 0x0123FEDC when printed with %p.</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/ASTERISK-19096">ASTERISK-19096</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/CHANGES <span style="color: grey">(351538)</span></li>
<li>/trunk/apps/app_mixmonitor.c <span style="color: grey">(351538)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1682/diff/" style="margin-left: 3em;">View Diff</a></p>
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