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<img src="https://avatars.githubusercontent.com/u/3279138?s=40&d=https%3A%2F%2Ftravis-ci.org%2Fimages%2Fmailer%2Fmascot-avatar-40px.png" style="vertical-align:middle;width:40px;height:40px"> <span style="vertical-align:middle;margin-left:3px"><strong><a href="https://travis-ci.org/openssl/openssl" style="text-decoration:underline;color:#606060">openssl / openssl</a></strong> (<a href="https://github.com/openssl/openssl/tree/master" style="text-decoration:underline;color:#606060">master</a>)</span>
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<span style="display:inline-block;margin-top:12px;vertical-align:middle"><a href="https://travis-ci.org/openssl/openssl/builds/136489766" style="text-decoration:none;font-weight:bold;color:#57769d;text-decoration:underline;color:#707070">Build #4415 has errored.</a></span><img src="https://travis-ci.org/images/mailer/arrow-error.png" style="float: right;" height="45">
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<div class="stop-watch" style="vertical-align:middle;padding:0px;background-size:20px;display:inline-block;width:20px;height:20px"><img src="https://travis-ci.org/images/mailer/stopwatch-error.png" width="20" height="20"></div> <span style="vertical-align:middle">10 minutes and 19 seconds</span>
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<td class="grey" style="padding:0px;border:0px;color:#808080;padding:10px 20px 10px 0px;height:20px;padding-top:20px;padding-bottom:5px"><strong>Todd Short</strong></td>
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<a href="https://github.com/openssl/openssl/commit/5c753de668322bf9903a49ba713b2cbc62667571" style="text-decoration:underline;text-decoration:none;font-weight:bold;color:#57769d">5c753de</a> <a href="https://github.com/openssl/openssl/compare/2a7de0fd5d9b...5c753de66832" style="text-decoration:underline;text-decoration:none;font-weight:bold;color:#57769d">Changeset →</a>
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<td style="border:0px;padding:10px 20px 10px 0px;height:20px;width:50px;padding:0px;border-left:1px solid #adadad;border-bottom-left-radius:5px;border-bottom:1px solid #adadad"> </td>
<td colspan="2" class="grey" style="padding:0px;border:0px;color:#808080;padding:10px 20px 10px 0px;height:20px;border-right:1px solid #adadad;padding-bottom:20px;padding-top:0px;border-bottom:1px solid #adadad;border-bottom-right-radius:5px">Fix session ticket and SNI<br><br>When session tickets are used, it's possible that SNI might swtich the<br>SSL_CTX on an SSL. Normally, this is not a problem, because the<br>initial_ctx/session_ctx are used for all session ticket/id processes.<br><br>However, when the SNI callback occurs, it's possible that the callback<br>may update the options in the SSL from the SSL_CTX, and this could<br>cause SSL_OP_NO_TICKET to be set. If this occurs, then two bad things<br>can happen:<br><br>1. The session ticket TLSEXT may not be written when the ticket expected<br>flag is set. The state machine transistions to writing the ticket, and<br>the client responds with an error as its not expecting a ticket.<br>2. When creating the session ticket, if the ticket key cb returns 0<br>the crypto/hmac contexts are not initialized, and the code crashes when<br>trying to encrypt the session ticket.<br><br>To fix 1, if the ticket TLSEXT is not written out, clear the expected<br>ticket flag.<br>To fix 2, consider a return of 0 from the ticket key cb a recoverable<br>error, and write a 0 length ticket and continue. The client-side code<br>can explicitly handle this case.<br><br>Fix these two cases, and add unit test code to validate ticket behavior.<br><br>Reviewed-by: Emilia Käsper <emilia@openssl.org><br>Reviewed-by: Rich Salz <rsalz@openssl.org><br>(Merged from https://github.com/openssl/openssl/pull/1098)</td>
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