[Dovecot] [PATCH] lib-sql/driver-mysql.c - Add support for enabling MYSQL_OPT_SSL_VERIFY_SERVER_CERT

Hello,

The following patch adds support for enabling MYSQL_OPT_SSL_VERIFY_SERVER_CERT.

It makes the mysql client library check that the commonName in the server's SSL certificate matches the host name provided to mysql_real_connect() and aborts the connection if the name doesn't match.

An example connect string would look something like:

connect = ... ssl-ca=/path/to/ca.cert ssl-verify-server-cert=yes

By default the mysql client library does not perform this check.