Port OpenWSMAN to OpenSSL 1.1.0

[vcrhonek]

There are several changes in the library API which makes openwsman unable to compile. I did some work already - patch against latest release (2.6.2) is attached. It makes openwsman able to compile, but the daemon still does not work - it fails in set_ssl(), dlsym cannot find 'SSLv23_server_method()' symbol in the .so (openssl 1.1.0 makes a lot of internals opaque). I don't know how to resolve the problem.

Just few comments to the patch - first chunk changes access to the X509 cert through getter function, that should be clear.
The second chunk resolves problem with unknown 'SSL_CTRL_OPTIONS' - this is not final version and it also changes meaning of 'ssl_disabled_protocols' from openwsman.conf - it would be probably better to let user put only one protocol there, which will be the minimum version of protocol that openssl will use. It is still possible to disable particular protocols with "Protocol" command, but it's not recommended. For more information see:
https://www.openssl.org/docs/manmaster/ssl/SSL_CONF_cmd.html
My intention was just to resolve failing build somehow, the decision is up to you:)

openwsman-2.6.2-openssl-1.1-fix.txt

[vcrhonek]

Attached patch (against latest release (2.6.2)) should resolve this issue. Please review. I would also consider change of mechanism for disabling particular SSL protocols through config file - SSL_CTX_set_options still works, but it's deprecated, see:
https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set_options.html
It's recommended to set the minimum protocol version instead of disabling particular protocols:
https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set_min_proto_version.html

Hope this helps. I'll probably write patch for master branch and create pull request to tomorrow.
openwsman-2.6.2-openssl-1.1-fix.txt