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List:       kde-core-devel
Subject:    Re: Review Request 116784: Fix incorrect use of KDateTime.toTime_t in kio_http
From:       "David Jarvie" <djarvie () kde ! org>
Date:       2014-03-14 17:04:47
Message-ID: 20140314170447.2591.93011 () probe ! kde ! org
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kioslave/http/http.cpp
<https://git.reviewboard.kde.org/r/116784/#comment37258>

    Need to convert to UTC first, since it will produce the wrong value if it's in \
some random time zone:  dt.toUtc().dateTime()


- David Jarvie


On March 13, 2014, 12:49 p.m., Dawit Alemayehu wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/116784/
> -----------------------------------------------------------
> 
> (Updated March 13, 2014, 12:49 p.m.)
> 
> 
> Review request for kdelibs, Andreas Hartmetz and David Faure.
> 
> 
> Repository: kdelibs
> 
> 
> Description
> -------
> 
> The attached patch does the following:
> 
> - It corrects a mistake in assumption that KDateTime.toTime_t() will return -1 for \
> invalidate dates. It does not. The result is an overflow which is interpreted in \
> kio_http as a timestamp in the distant future which obviously is wrong. See \
> https://bugs.kde.org/show_bug.cgi?id=331774 for example. This assumption also \
> affects the timestamp variables used for cache management. 
> - It converts cache management timestamp variables to 64 bits so they can \
> accomodates dates beyond Feb 7, 2106. 
> 
> Diffs
> -----
> 
> kioslave/http/http.h dd85622 
> kioslave/http/http.cpp e4f1eba 
> 
> Diff: https://git.reviewboard.kde.org/r/116784/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Dawit Alemayehu
> 
> 


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      This is an automatically generated e-mail. To reply, visit:
      <a href="https://git.reviewboard.kde.org/r/116784/">https://git.reviewboard.kde.org/r/116784/</a>
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font-size: 9pt; padding: 4px 8px; text-align: left;">  <a \
href="https://git.reviewboard.kde.org/r/116784/diff/1/?file=253643#file253643line304" \
style="color: black; font-weight: bold; text-decoration: \
underline;">kioslave/http/http.cpp</a>  <span style="font-weight: normal;">

     (Diff revision 1)

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    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <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">304</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">    <span \
class="k">return</span> <span class="p">(</span><span class="n">dt</span><span \
class="p">.</span><span class="n">isValid</span><span class="p">()</span> <span \
class="o">?</span> <span class="p">(</span><span class="n">dt</span><span \
class="p">.</span><span class="n">dateTime</span><span class="p">().</span><span \
class="n">toMSecsSinceEpoch</span><span class="p">()</span><span \
class="o">/</span><span class="mi">1000</span><span class="p">)</span> <span \
class="o">:</span> <span class="o">-</span><span class="mi">1</span><span \
class="p">);</span></pre></td>  </tr>

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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;">Need to \
convert to UTC first, since it will produce the wrong value if it&#39;s in some \
random time zone: dt.toUtc().dateTime()</pre>
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<p>- David Jarvie</p>


<br />
<p>On March 13th, 2014, 12:49 p.m. UTC, Dawit Alemayehu wrote:</p>








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<div>Review request for kdelibs, Andreas Hartmetz and David Faure.</div>
<div>By Dawit Alemayehu.</div>


<p style="color: grey;"><i>Updated March 13, 2014, 12:49 p.m.</i></p>









<div style="margin-top: 1.5em;">
 <b style="color: #575012; font-size: 10pt;">Repository: </b>
kdelibs
</div>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
 <table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" \
style="border: 1px solid #b8b5a0">  <tr>
  <td>
   <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;">The attached patch does the following:

- It corrects a mistake in assumption that KDateTime.toTime_t() will return -1 for \
invalidate dates. It does not. The result is an overflow which is interpreted in \
kio_http as a timestamp in the distant future which obviously is wrong. See \
https://bugs.kde.org/show_bug.cgi?id=331774 for example. This assumption also affects \
the timestamp variables used for cache management.

- It converts cache management timestamp variables to 64 bits so they can accomodates \
dates beyond Feb 7, 2106.</pre>  </td>
 </tr>
</table>



<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">

 <li>kioslave/http/http.h <span style="color: grey">(dd85622)</span></li>

 <li>kioslave/http/http.cpp <span style="color: grey">(e4f1eba)</span></li>

</ul>

<p><a href="https://git.reviewboard.kde.org/r/116784/diff/" style="margin-left: \
3em;">View Diff</a></p>







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