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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Sorry, I missed that call to SSL_set_session. No, you don't need to call SSL_set_session. SSL_get_session is a get0-type function; it just returns a copy of
the pointer in the SSL object. So any changes you make to that SSL_SESSION object are to the one that's already in the SSL object.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Calling SSL_set_session with the same session that's already in the SSL should be OK, because the code increments the reference count on the SSL_SESSION before
calling SSL_SESSION_free - and so the free will just decrement the count again. But it doesn't do anything useful.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">(SSL_set_session could do a reference comparison on the existing and new sessions and return without doing anything if they're the same, but there's probably
little real-world value in adding such an optimization.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The code's in ssl/ssl_sess.c (at least for 1.0.2), if you want to have a look for yourself. It's quite straightforward, which is not *always* the case with
OpenSSL.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";color:black">Michael Wojcik</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
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</span><span style="font-size:9.0pt;font-family:"Courier New";color:black">Distinguished Engineer</span><span style="font-size:9.0pt;font-family:"Courier New";color:black">, Micro Focus</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> openssl-users [mailto:openssl-users-bounces@openssl.org]
<b>On Behalf Of </b>Eric To<br>
<b>Sent:</b> Thursday, August 25, 2016 09:29<br>
<b>To:</b> openssl-users@openssl.org<br>
<b>Subject:</b> Re: [openssl-users] Example on SSL_SESSION_set_ex_data?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks Rich and Michael.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">That was it, I was under the impression that these set functions would behave like those i2d function that would put the actual data inside... as I don't want to deal with the deallocation later (as I am modifying apache's mod_ssl). This
seems to work as I can immediately read it back (before I couldn't) with get_ex_data.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Do I still need to call SSL_set_session to put the updated session back in the SSL?<o:p></o:p></p>
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<p class="MsoNormal">According to the documentation:<o:p></o:p></p>
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<p class="MsoNormal">"If there is already a session set inside ssl (because it was set with SSL_set_session() before or because the same ssl was already used for a connection), SSL_SESSION_free() will be called for that session."<o:p></o:p></p>
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<p align="center" style="text-align:center"><span style="background:white"><o:p> </o:p></span></p>
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