Description:
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The 5.4 patch for #69669 (https://bugs.php.net/patch-display.php?bug_id=69669&patch=backronym-5.4&revision=1436080071&display=1) causes a regression in mysqlnd whereby if MYSQLND_SSL_SUPPORTED is not defined, attempting to connect results in a 'Packets out of order' error.

This is because the patch introduces a new #else to the check, which calls PACKET_WRITE.
This affects the MySQL and MySQLi extensions when using mysqlnd.

The attached patch corrects this, and emits an E_WARNING if the CLIENT_SSL flag is set but cannot be honoured, rather than silently squashing it (which seemed rather contrary to the original purpose of the change). FWIW, I would probably advocate simply refusing to connect at all under those circumstances, but that is perhaps a more contentious change.


Test script:
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<?php
mysql_connect();
mysqli_connect();

Expected result:
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(No output)

Actual result:
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PHP Warning:  Packets out of order. Expected 3 received 2. Packet size=22 in - on line 2
PHP Warning:  mysql_connect(): MySQL server has gone away in - on line 2
PHP Warning:  mysql_connect(): MySQL server has gone away in - on line 2
PHP Warning:  Packets out of order. Expected 3 received 2. Packet size=22 in - on line 3
PHP Warning:  mysql_connect(): MySQL server has gone away in - on line 3
PHP Warning:  mysql_connect(): MySQL server has gone away in - on line 3