Small expansion to the work done in https://github.com/caddyserver/caddy/pull/2963 which simply calls `os.ExpandEnv` so env vars like `{$URL}` where `$URL=$SCHEME://$HOST:$PORT` (contrived) get the expanded $SCHEME, $HOST, and $PORT variables included
* httpcaddyfile: Begin implementing log directive, and debug mode
For now, debug mode just sets the log level for all logs to DEBUG
(unless a level is specified explicitly).
* httpcaddyfile: Finish 'log' directive
Also rename StringEncoder -> SingleFieldEncoder
* Fix minor bug in replacer (when vals are empty)
* caddytls: Add CipherSuiteName and ProtocolName functions
The cipher_suites.go file is derived from a commit to the Go master
branch that's slated for Go 1.14. Once Go 1.14 is released, this file
can be removed.
* caddyhttp: Use commonLogEmptyValue in common_log replacer
* caddyhttp: Add TLS placeholders
* caddytls: update unsupportedProtocols
Don't export unsupportedProtocols and update its godoc to mention that
it's used for logging only.
* caddyhttp: simplify getRegTLSReplacement signature
getRegTLSReplacement should receive a string instead of a pointer.
* caddyhttp: Remove http.request.tls.client.cert replacer
The previous behavior of printing the raw certificate bytes was ported
from Caddy 1, but the usefulness of that approach is suspect. Remove
the client cert replacer from v2 until a use case is presented.
* caddyhttp: Use tls.CipherSuiteName from Go 1.14
Remove ported version of CipherSuiteName in the process.
See end of issue #3004. Loading the same certificate file multiple times
with different tags will result in it being de-duplicated in the in-
memory cache, because of course they all have the same bytes. This
meant that any certs of the same filename loaded with different tags
would be overwritten by the next certificate of the same filename, and
any conn policies looking for the tags of the previous ones would never
find them, causing connections to fail.
So, now we remember cert filenames and their tags, instead of loading
them multiple times and overwriting previous ones.
A user crafting their own JSON might make this error too... maybe we
won't see it happen. But if it does, one possibility is, when loading
a duplicate cert, instead of discarding it completely, merge the tag
list into the one that's already stored in the cache, then discard.
Configuration via the Caddyfile requires use of env variables, but
an upstream issue is currently blocking that:
https://github.com/go-acme/lego/issues/1054
Providers will need to be retrofitted upstream in order to support env
var configuration.
If user provides their own certs or makes any hostname-specific TLS
connection policy, it means that no TLS connection would be served for
any other hostnames, even though you'd expect that TLS is enabled for
them, too. So now we append a catch-all conn policy if none exist, which
allows all ClientHellos to be matched and served.
We also fix the consolidation of automation policies, which previously
gobbled up automation policies without hosts in favor of automation
policies with hosts. Instead of a host-specific policy eating up an
identical catch-all policy, the catch-all policy eats up the identical
host-specific policy, ensuring that the policy is applied to all hosts
which need it.
See also:
https://caddy.community/t/v2-automatic-https-certificate-errors/6847/9?u=matt
This ensure that if there are multiple certs that match a particular
ServerName or other parameter, then specifically the one the user
provided in the Caddyfile will be used.
Before, listener ports could be wrong because ParseAddress doesn't know
about the user-configured HTTP/HTTPS ports, instead hard-coding port 80
or 443, which could be wrong if the user changed them to something else.
Now we defer port and scheme validation/inference to a later part of
building the output JSON.
Using rewrite is like saying, "I accept this request, but I just need
to act on it as if it came in differently."
Whereas redir implies more of, "I reject this request, send it to me
differently, then I will process it."
Makes sense for it to come before rewrites. This can always be changed
using the 'order' global option if needed.
The fix that was initially put forth in #2971 was good, but only for
up to one layer of nesting. The real problem was that we forgot to
increment nesting when already inside a block if we saw another open
curly brace that opens another block (dispenser.go L157-158).
The new 'handle' directive allows HTTP Caddyfiles to be designed more
like nginx location blocks if the user prefers. Inside a handle block,
directives are still ordered just like they are outside of them, but
handler blocks at a given level of nesting are mutually exclusive.
This work benefitted from some refactoring and cleanup.
This allows individual directives to be ordered relative to others,
where order matters (for example HTTP handlers). Will primarily be
useful when developing new directives, so you don't have to modify the
Caddy source code. Can also be useful if you prefer that redir comes
before rewrite, for example. Note that these are global options. The
route directive can be used to give a specific order to a specific group
of HTTP handler directives.
In the v1 Caddyfile, only the first matching site definition would be
used, so setting these `Terminal: true` ensures that only the first
matching one is used in v2, too.
We also have to sort by key specificity... Caddy 1 had a special data
structure for selecting the most specific site definition, but we don't
have that structure in v2, so we need to sort by length (of host and
path, separately). For blocks where more than one key is present, we
choose the longest host and path (independently, need not be from same
key) by which to sort.
When we append a token to the new dispenser, we need to consume it in the parent, too; otherwise it gets scanned twice, which in this case messed up the nesting count which got decremented once too many times.
* fix replacing variables on imported files
* refactored replaceEnvVars to ensure it is always called
* Use byte slices for easier use
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
This is because of our sequential handling logic which was recently
merged; if vars is the first handler in the chain, it will be run before
the next route's matchers are executed, so there's no need to nest the
handlers anymore.
* http: path matcher: exact match by default; substring matches (#2959)
This is a breaking change.
* caddyfile: Change "matcher" directive to "@matcher" syntax (#2959)
* cmd: Assume caddyfile adapter for config files named Caddyfile
* Sub-sort handlers by path matcher length (#2959)
Caddyfile-generated subroutes have handlers, which are sorted first by
directive order (this is unchanged), but within directives we now sort
by specificity of path matcher in descending order (longest path first,
assuming that longest path is most specific).
This only applies if there is only one matcher set, and the path
matcher in that set has only one path in it. Path matchers with two or
more paths are not sorted like this; and routes with more than one
matcher set are not sorted like this either, since specificity is
difficult or impossible to infer correctly.
This is a special case, but definitely a very common one, as a lot of
routing decisions are based on paths.
* caddyfile: New 'route' directive for appearance-order handling (#2959)
* caddyfile: Make rewrite directives mutually exclusive (#2959)
This applies only to rewrites in the top-level subroute created by the
HTTP caddyfile.
* transform a caddyfile with environment variables
* support adapt time and runtime variables in the caddyfile
* caddyfile: Pre-process environment variables before parsing
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
This commit goes a long way toward making automated documentation of
Caddy config and Caddy modules possible. It's a broad, sweeping change,
but mostly internal. It allows us to automatically generate docs for all
Caddy modules (including future third-party ones) and make them viewable
on a web page; it also doubles as godoc comments.
As such, this commit makes significant progress in migrating the docs
from our temporary wiki page toward our new website which is still under
construction.
With this change, all host modules will use ctx.LoadModule() and pass in
both the struct pointer and the field name as a string. This allows the
reflect package to read the struct tag from that field so that it can
get the necessary information like the module namespace and the inline
key.
This has the nice side-effect of unifying the code and documentation. It
also simplifies module loading, and handles several variations on field
types for raw module fields (i.e. variations on json.RawMessage, such as
arrays and maps).
I also renamed ModuleInfo.Name -> ModuleInfo.ID, to make it clear that
the ID is the "full name" which includes both the module namespace and
the name. This clarity is helpful when describing module hierarchy.
As of this change, Caddy modules are no longer an experimental design.
I think the architecture is good enough to go forward.
