tree a5285d093c902207968a19bedfe1725aad643fe0
parent 6b35e9bfbf0f37c8a584c7aabb475afb81b7008c
author Emeric Brun <ebrun@haproxy.com> 1497537459 +0200
committer Willy Tarreau <w@1wt.eu> 1509454712 +0100
encoding latin1

MAJOR: threads/ssl: Make SSL part thread-safe

First, OpenSSL is now initialized to be thread-safe. This is done by setting 2
callbacks. The first one is ssl_locking_function. It handles the locks and
unlocks. The second one is ssl_id_function. It returns the current thread
id. During the init step, we create as much as R/W locks as needed, ie the
number returned by CRYPTO_num_locks function.

Next, The reusable SSL session in the server context is now thread-local.

Shctx is now also initialized if HAProxy is started with several threads.

And finally, a global lock has been added to protect the LRU cache used to store
generated certificates. The function ssl_sock_get_generated_cert is now
deprecated because the retrieved certificate can be removed by another threads
in same time. Instead, a new function has been added,
ssl_sock_assign_generated_cert. It must be used to search a certificate in the
cache and set it immediatly if found.