* Move certificate, key, DH parameters and configuration to heap
(Documentation states that setting new configuration, e.g.
during a rehash, is unsupported while connections using that
configuration are active)
This is the same approach as the fix for #186
Refcount these structures so as to not introduce a memory leak
On rehash, it will use new structures only if there are no
errors in constructing them
* Make fingerprint generation work for TLS connections
See the comments in the newly created file for an explanation
* Fix memory leak when generating a fingerprint from a file
* Add better error-reporting (strings in addition to numbers)
where possible
* Coalesce several connection memory allocations into one function
* Reduce boilerplate where possible (Charybdis targets C99)
* Support private key being in certificate file, and having no
DH parameters file
* Correct erroneous closing comment
If there are holes in the auth_providers ID numbers, the array allocated
based on list length won't be large enough to handle all the IDs.
(auth->data could be converted to a dlink_list)
* long is too small on 32-bit systems, use unsigned long long if we want
to check for out of range values
* UINT32_MAX is a valid cid, and 0 isn't
* make auth->cid a uint32_t not uint16_t
There are two important caveats here, however:
1) Aliased commands have more than 8 parameters will be truncated;
there's nothing I can do about this.
2) Parameters with colons will not be handled as you expect. Again,
nothing I can do about this.
Iteration is the primary thing done on these, so using a dictionary
doesn't help a lot. Furthermore (and most importantly), they are not
safe to delete from.
* Don't manually initialise libssl 1.1.0 -- it does this automatically
* SSL_library_init() should be called first otherwise
* Move SSL_CTX construction to rb_setup_ssl_server()
* Test for all required files (certificate & key) before doing anything
* Free the old CTX before constructing a new one (Fixes#186)
* Don't try to set options / ciphers etc on a NULL CTX
* Clean up ifdef indentation
* Fix DH parameters memory leak
