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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2217/">https://reviewboard.asterisk.org/r/2217/</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;">I like the idea. And the inline explanations.
But, I always start my day with a cup of pedantic. Sorry about that ;)</pre>
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<a href="https://reviewboard.asterisk.org/r/2217/diff/1/?file=32242#file32242line107" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/uuid.c</a>
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(Diff revision 1)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_uuid_to_str(const struct ast_uuid *uuid, struct ast_str **str)</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="n">uu_str</span><span class="p">[</span><span class="n">UUID_STR_LEN</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;">+
/* UUID_STR_LEN holds length of textual representation of UUID, including trailing \0 */
That saves the next guy from having to look that up.</pre>
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<a href="https://reviewboard.asterisk.org/r/2217/diff/1/?file=32242#file32242line119" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/uuid.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_uuid_to_str(const struct ast_uuid *uuid, struct ast_str **str)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">uuid_parse</span><span class="p">(</span><span class="n">ast_str_buffer</span><span class="p">(</span><span class="n">str</span><span class="p">),</span> <span class="n">uuid</span><span class="o">-></span><span class="n">uu</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;">Perhaps an ast_assert(ret == 0) here? uuid->uu is in an undefined state when uuid_parse returns -1.
And see my preference of malloc over calloc. If the calloc is to make ast_uuid_is_nil() true in the failure case, then that's based on the unspoken assumtion that uu=={0,} equals uuid_is_null(uu).</pre>
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<a href="https://reviewboard.asterisk.org/r/2217/diff/1/?file=32242#file32242line125" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/uuid.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_uuid_to_str(const struct ast_uuid *uuid, struct ast_str **str)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">struct</span> <span class="n">ast_uuid</span> <span class="o">*</span><span class="n">dst</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="k">sizeof</span><span class="p">(</span><span class="o">*</span><span class="n">dst</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;">I prefer calloc over malloc. You're going to be overwriting all bits soon anyway.
Someone is going to bring op defensive programming now, but you've read the manpage: "The copied UUID is returned in the location pointed to by dst." No mention of "it's nicer to overwrite NULs".
If the code changes -- e.g. more items are added to the ast_uuid -- then one can revisit the allocations.</pre>
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<a href="https://reviewboard.asterisk.org/r/2217/diff/1/?file=32242#file32242line143" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/uuid.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_uuid_to_str(const struct ast_uuid *uuid, struct ast_str **str)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="kt">int</span> <span class="nf">ast_uuid_is_nil</span><span class="p">(</span><span class="k">const</span> <span class="k">struct</span> <span class="n">ast_uuid</span> <span class="o">*</span><span class="n">uuid</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;">Good choice of nil over null.</pre>
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<p>- wdoekes</p>
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<p>On November 27th, 2012, 6:05 p.m., Mark Michelson wrote:</p>
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<div>Review request for Asterisk Developers, Matt Jordan and David Lee.</div>
<div>By Mark Michelson.</div>
<p style="color: grey;"><i>Updated Nov. 27, 2012, 6:05 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;">This is the first of many parts of the overall goal of improving Asterisk APIs. This adds a UUID API to Asterisk, eventually to be used as a method of uniquely identifying channels and potentially other objects.
The implementation here uses libuuid, which is packaged by all major Linux distributions. The API is basically a wrapper around libuuid's API, but it hides all implementation details in case we want to switch out libraries at some point.
Licensing for libuuid is a bit confusing. On one hand, this online man page (http://linux.die.net/man/3/libuuid) claims that the library is distributed under the LGPL version 2. However, when I downloaded the source for the library on my machine, the code had the 3-clause BSD license printed in the source. In either case, I believe use of external library is license-compatible with Asterisk.
Regarding specific implementation decisions, I think comments in the code should explain why I chose to do things certain ways. Please let me know if anything should be done differently or if you have ideas for tests beyond what I have already included.
I have no idea what is up with the changes listed in autoconfig.h.in. Those changes showed up when I ran the bootstrap.sh script after changing configure.ac. </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;">I have included a set of unit tests that exercise all the APIs. They pass when run locally.</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-20725">ASTERISK-20725</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/configure <span style="color: grey">(UNKNOWN)</span></li>
<li>/trunk/configure.ac <span style="color: grey">(376687)</span></li>
<li>/trunk/include/asterisk/autoconfig.h.in <span style="color: grey">(376687)</span></li>
<li>/trunk/include/asterisk/uuid.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/main/Makefile <span style="color: grey">(376687)</span></li>
<li>/trunk/main/asterisk.c <span style="color: grey">(376687)</span></li>
<li>/trunk/main/uuid.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/tests/test_uuid.c <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2217/diff/" style="margin-left: 3em;">View Diff</a></p>
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