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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2403/">https://reviewboard.asterisk.org/r/2403/</a>
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<p style="margin-top: 0;">On March 19th, 2013, 10:31 a.m., <b>Tilghman Lesher</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2403/diff/2/?file=34835#file34835line643" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/funcs/func_curl.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; ">static int acf_curl_helper(struct ast_channel *chan, const char *cmd, char *info, char *buf, struct ast_str **input_str, ssize_t len)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">curl_easy_setopt</span><span class="p">(</span><span class="o">*</span><span class="n">curl</span><span class="p">,</span> <span class="n">CURLOPT_ERRORBUFFER</span><span class="p">,</span> <span class="p">(</span><span class="kt">char</span><span class="o">*</span><span class="p">)</span><span class="nb">NULL</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;">It's not clear from the documented libcurl API that this will do what you expect. The API suggests that you should instead be using CURLOPT_STDERR to turn off the buffer.</pre>
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<p>On March 19th, 2013, 10:34 a.m., <b>Tilghman Lesher</b> wrote:</p>
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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;">As an addendum, I realize that you tested this, but given that the API is not documented that way, it could be changed in the future, and we'd be wrong for assuming that it would always work this way. I think I'd prefer if we used the API as documented, rather than making assumptions.</pre>
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<p>On March 19th, 2013, 11:09 a.m., <b>wdoekes</b> wrote:</p>
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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;">While I agree that one generally shouldn't be making such assumptions, I don't see how CURLOPT_STDERR helps me in this case.
The docs[1] explicitly state that I can change it. Between the lines I read that I can clear it:
libcurl will need it until you call curl_easy_cleanup(3) or you set the same option again to use a different pointer.
The mailing list[2] and a corresponding commit[3] also suggests that it is valid:
Subject: typecheck: allow NULL to unset CURLOPT_ERRORBUFFER
From: Daniel Stenberg <daniel_at_haxx.se>
Thanks, pushed!
[1] http://curl.haxx.se/libcurl/c/curl_easy_setopt.html#CURLOPTERRORBUFFER
[2] http://curl.haxx.se/mail/lib-2011-10/0135.html
[3] https://github.com/bagder/curl/commit/62bcf005f4678a93158358265ba905bace33b834</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;">Fair enough. I would feel more comfortable if the documentation actually said that the buffer could be disabled by setting it to NULL, however. Oddly, while all of the other sections specify a default, this one does not.</pre>
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<p>- Tilghman</p>
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<p>On March 19th, 2013, 7:10 a.m., wdoekes wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By wdoekes.</div>
<p style="color: grey;"><i>Updated March 19, 2013, 7:10 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;">Failed CURL() requests would be quite silent.
Now you get nice warnings like this:
WARNING[6701]: func_curl.c:654 acf_curl_helper: server certificate verification failed. \
CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none ('https://ORIGINAL_URL')</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;">It works.
I also tested that setting CURLOPT_ERRORBUFFER to NULL does what you'd expect. (And the cast is to silent the fancy gcc type checks.)</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/funcs/func_curl.c <span style="color: grey">(383308)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2403/diff/" style="margin-left: 3em;">View Diff</a></p>
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