tree d3840e132c0724ae3d276deda9bcaa12f5ea0d61
parent 46a030cdda7c96f0b10c43b0e585eed558d325d4
author William Lallemand <wlallemand@haproxy.com> 1594028490 +0200
committer William Lallemand <wlallemand@haproxy.org> 1594055283 +0200

WIP/MINOR: ssl: add sample fetches for keylog in frontend

OpenSSL 1.1.1 provides a callback registering function
SSL_CTX_set_keylog_callback, which allows one to receive a string
containing the keys to deciphers TLSv1.3.

Unfortunately it is not possible to store this data in binary form and
we can only get this information using the callback. Which means that we
need to store it until the connection is closed.

This patches add 2 pools, the first one, pool_head_ssl_keylog is used to
store a struct ssl_keylog which will be inserted as a ex_data in a SSL *.
The second one is pool_head_ssl_keylog_str which will be used to store
the hexadecimal strings.

To enable the capture of the keys, you need to set "tune.ssl.keylog on"
in your configuration.

The following fetches were implemented:

ssl_fc_client_early_traffic_secret,
ssl_fc_client_handshake_traffic_secret,
ssl_fc_server_handshake_traffic_secret,
ssl_fc_client_traffic_secret_0,
ssl_fc_server_traffic_secret_0,
ssl_fc_exporter_secret,
ssl_fc_early_exporter_secret