OpenSSL 1.1.0 Compatibility

[will-bastian]

The openssl project underwent significant change from 1.0.2 -> 1.1.0 and one of the most visible is that types are now opaque:
openssl/openssl#962 (comment)

After sorting through some initial compile failures (SHA_INIT -> SHA1_INIT, etc), we encounter the same error described in the the initial issue report, above: openssl/openssl#962

vagrant@ubuntu-bionic:~/build$ make
Scanning dependencies of target mordor
[  0%] Building CXX object mordor/CMakeFiles/mordor.dir/zip.cpp.o
[  1%] Building CXX object mordor/CMakeFiles/mordor.dir/http/auth.cpp.o
[  1%] Building CXX object mordor/CMakeFiles/mordor.dir/http/basic.cpp.o
[  2%] Building CXX object mordor/CMakeFiles/mordor.dir/http/broker.cpp.o
[  3%] Building CXX object mordor/CMakeFiles/mordor.dir/http/chunked.cpp.o
[  3%] Building CXX object mordor/CMakeFiles/mordor.dir/http/client.cpp.o
[  4%] Building CXX object mordor/CMakeFiles/mordor.dir/http/connection.cpp.o
[  5%] Building CXX object mordor/CMakeFiles/mordor.dir/http/digest.cpp.o
[  5%] Building CXX object mordor/CMakeFiles/mordor.dir/http/http.cpp.o
[  6%] Building CXX object mordor/CMakeFiles/mordor.dir/http/multipart.cpp.o
[  6%] Building CXX object mordor/CMakeFiles/mordor.dir/http/oauth.cpp.o
[  7%] Building CXX object mordor/CMakeFiles/mordor.dir/http/oauth2.cpp.o
[  8%] Building CXX object mordor/CMakeFiles/mordor.dir/http/proxy.cpp.o
[  8%] Building CXX object mordor/CMakeFiles/mordor.dir/http/server.cpp.o
[  9%] Building CXX object mordor/CMakeFiles/mordor.dir/http/servlet.cpp.o
[ 10%] Building CXX object mordor/CMakeFiles/mordor.dir/http/servlets/config.cpp.o
[ 10%] Building CXX object mordor/CMakeFiles/mordor.dir/streams/buffer.cpp.o
[ 11%] Building CXX object mordor/CMakeFiles/mordor.dir/streams/buffered.cpp.o
[ 11%] Building CXX object mordor/CMakeFiles/mordor.dir/streams/cat.cpp.o
[ 12%] Building CXX object mordor/CMakeFiles/mordor.dir/streams/counter.cpp.o
[ 13%] Building CXX object mordor/CMakeFiles/mordor.dir/streams/crypto.cpp.o
In file included from /home/vagrant/mordor/mordor/streams/crypto.cpp:1:0:
/home/vagrant/mordor/mordor/streams/crypto.h:74:20: error: field ‘m_ctx’ has incomplete type ‘EVP_CIPHER_CTX {aka evp_cipher_ctx_st}’
     EVP_CIPHER_CTX m_ctx;
                    ^~~~~
In file included from /usr/include/openssl/crypto.h:31:0,
                 from /usr/include/openssl/bio.h:20,
                 from /home/vagrant/mordor/mordor/pch.h:119,
                 from <command-line>:0:
/usr/include/openssl/ossl_typ.h:90:16: note: forward declaration of ‘EVP_CIPHER_CTX {aka struct evp_cipher_ctx_st}’
 typedef struct evp_cipher_ctx_st EVP_CIPHER_CTX;
                ^~~~~~~~~~~~~~~~~
mordor/CMakeFiles/mordor.dir/build.make:1138: recipe for target 'mordor/CMakeFiles/mordor.dir/streams/crypto.cpp.o' failed
make[2]: *** [mordor/CMakeFiles/mordor.dir/streams/crypto.cpp.o] Error 1
CMakeFiles/Makefile2:95: recipe for target 'mordor/CMakeFiles/mordor.dir/all' failed
make[1]: *** [mordor/CMakeFiles/mordor.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
vagrant@ubuntu-bionic:~/build$

OpenSSL 1.0.2 reaches end-of-life on 2019-12-31 (openssl/openssl#962 (comment)). Are there plans/roadmap to update Mordor to account for this?