make ssl_set return value in mysqlnd compatible with libmysqli return value

Fix sprintf modifiers all around the place. In most cases
%u should be used. Where size_t is used then MYSQLND_SZ_T_SPEC should be
the modifier

Fix sprintf modifiers all around the place. In most cases
%u should be used. Where size_t is used then MYSQLND_SZ_T_SPEC should be
the modifier

split mysqlnd_connect() in two parts, one doing the authorization

split mysqlnd_connect() in two parts, one doing the authorization

no more needed because of the charset fix in the previous changeset

no more needed because of the charset fix in the previous changeset

Fixed bug #52082 (character_set_client & character_set_connection reset after
mysqli_change_user())

libmysql >= 5.1.23 will PASS, older library versions will fail

Fixed bug #52082 (character_set_client & character_set_connection reset after
mysqli_change_user())

libmysql >= 5.1.23 will PASS, older library versions will fail

Don't use NULL pointer, always check before use

Don't use NULL pointer, always check before use

Don't use conn->net without checking if it is NULL, because
it can be NULL in OOM conditions. This would cause a crash.

Don't use conn->net without checking if it is NULL, because
it can be NULL in OOM conditions. This would cause a crash.

Handle the situation when MYSQLND_PROTOCOL's methods return NULL.
mysqlnd should not crash but gracefully return with an error.

Handle the situation when MYSQLND_PROTOCOL's methods return NULL.
mysqlnd should not crash but gracefully return with an error.

Init should return status value because initialization can fail.
In this case mysqlnd_init() should return NULL to the end-user.

Init should return status value because initialization can fail.
In this case mysqlnd_init() should return NULL to the end-user.

- Give possibility to overload mysqlnd_result_init().
- Always use conn->m->stmt_init instead of mysqlnd_stmt_init()

- Give possibility to overload mysqlnd_result_init().
- Always use conn->m->stmt_init instead of mysqlnd_stmt_init()

Handle gracefully OOM in mysqlnd_mempool_create and up the stack

Handle gracefully OOM in mysqlnd_mempool_create and up the stack

Better handing of OOM in mysqlnd::set_client_option

Better handing of OOM in mysqlnd::set_client_option

Handle OOM cases, in case of persistent connections this is real
and the Zend MM won't help.

Handle OOM cases, in case of persistent connections this is real
and the Zend MM won't help.