This allows us to get rid of the hideous MATRIX_PATH_PART_EQUALS macro,
and prevents inconsistent usage of strcmp() (for example, !strcmp() vs
strcmp() == 0).
StrEquals() also has sensible behavior for dealing with NULL strings (it
doesn't just segfault like strcmp()).
This is a very early prototype. It works, but it is probably not efficient
or reliable. However, the documentation format it parses is stable, so I
will begin moving the documentation into the headers.
Note that Db has the potential to deadlock when caching is being used,
and when caching isn't being used, an inconsistent state can occur. Future
changes to Db will fix both of these issues.
Apparently it can EAGAIN on non-blocking connections... I don't think
LibreSSL's TLS library does this, but something to keep in mind if it
doesn't work for somebody.
This is useful for having a TLS and a non-TLS version port, like Synapse.
I verified that the multiple-servers does in fact work as intended,
although the TLS server part is broken; I must be doing something
incorrectly with LibreSSL in setting up the server.
This is the easiest and cleanest way to get logging into some of the
fundamental APIs, such as the database and TLS APIs. We don't want to
have to pass logging functions to those, but they can safely use the
global logging configuration.
These functions previously operated on the assumption that fgetc() would
block; however it will not block on HttpServer streams because those are
non-blocking. They now check error conditions properly before failing
prematurely.
