Without -ldflags, the verison information needs to be updated manually,
which is never done between releases, so development builds appear
indiscernable from stable builds using `caddy -version`.
This is part of a set of changes intended to relieve the burden of
always updating version information manually and distributing binaries
that look stable but actually may not be.
A stable build is defined as one which is produced at a git tag with
a clean working directory (no uncommitted changes). A dev build is
anything else. With this build script, `caddy -version` will now reveal
whether it is a development build and, if so, the base version, the
latest commit, the date and time of build, and the names of files with
changes as well as how many changes were made.
The output of `caddy -version` for stable builds remains the same.
Now attempt to staple OCSP even for certs that don't have an existing staple (issue #605). "tls off" short-circuits tls setup function. Now we call getEmail() when setting up an acme.Client that does renewals, rather than making a new account with empty email address. Check certificate expiry every 12 hours, and OCSP every hour.
This fixes a regression introduced in recent commits that enabled TLS on the default ":2015" config. This fix is possible because On-Demand TLS is no longer implicit; it must be explicitly enabled by the user by setting a maximum number of certificates to issue.
If Caddy is running but not listening on port 80, reloading Caddy with a new Caddyfile that needs to obtain a TLS cert from the CA would fail, because it was just assumed that, if reloading, port 80 as already in use. That is not always the case, so we scan the servers to see if one of them is listening on port 80, and we configure the ACME client accordingly. Kind of a hack... but it works.
Biggest change is no longer using standard library's tls.Config.getCertificate function to get a certificate during TLS handshake. Implemented our own cache which can be changed dynamically at runtime, even during TLS handshakes. As such, restarts are no longer required after certificate renewals or OCSP updates.
We also allow loading multiple certificates and keys per host, even by specifying a directory (tls got a new 'load' command for that).
Renamed the letsencrypt package to https in a gradual effort to become more generic; and https is more fitting for what the package does now.
There are still some known bugs, e.g. reloading where a new certificate is required but port 80 isn't currently listening, will cause the challenge to fail. There's still plenty of cleanup to do and tests to write. It is especially confusing right now how we enable "on-demand" TLS during setup and keep track of that. But this change should basically work so far.
This allows any template to use:
{{.Markdown "filename"}} which will convert the markdown contents
of filename to HTML and then include the HTML in the template.
