improve http request handling for internal services and multiple domains

per listener, you could enable the admin/account/webmail/webapi handlers. but
that would serve those services on their configured paths (/admin/, /,
/webmail/, /webapi/) on all domains mox would be webserving, including any
non-mail domains. so your www.example/admin/ would be serving the admin web
interface, with no way to disabled that.

with this change, the admin interface is only served on requests to (based on
Host header):
- ip addresses
- the listener host name (explicitly configured in the listener, with fallback
  to global hostname)
- "localhost" (for ssh tunnel/forwarding scenario's)

the account/webmail/webapi interfaces are served on the same domains as the
admin interface, and additionally:
- the client settings domains, as optionally configured in each Domain in
  domains.conf. typically "mail.<yourdomain>".

this means the internal services are no longer served on other domains
configured in the webserver, e.g. www.example.org/admin/ will not be handled
specially.

the order of evaluation of routes/services is also changed:
before this change, the internal handlers would always be evaluated first.
with this change, only the system handlers for
MTA-STS/autoconfig/ACME-validation will be evaluated first. then the webserver
handlers. and finally the internal services (admin/account/webmail/webapi).
this allows an admin to configure overrides for some of the domains (per
hostname-matching rules explained above) that would normally serve these
services.

webserver handlers can now be configured that pass the request to an internal
service: in addition to the existing static/redirect/forward config options,
there is now an "internal" config option, naming the service
(admin/account/webmail/webapi) for handling the request. this allows enabling
the internal services on custom domains.

for issue #160 by TragicLifeHu, thanks for reporting!
This commit is contained in:
Mechiel Lukkien
2024-05-11 11:13:14 +02:00
parent 9152384fd3
commit 614576e409
20 changed files with 746 additions and 350 deletions

View File

@ -170,6 +170,12 @@ func serveContentFallback(log mlog.Log, w http.ResponseWriter, r *http.Request,
http.ServeContent(w, r, "", mox.FallbackMtime(log), bytes.NewReader(fallback))
}
func init() {
mox.NewWebmailHandler = func(maxMsgSize int64, basePath string, isForwarded bool, accountPath string) http.Handler {
return http.HandlerFunc(Handler(maxMsgSize, basePath, isForwarded, accountPath))
}
}
// Handler returns a handler for the webmail endpoints, customized for the max
// message size coming from the listener and cookiePath.
func Handler(maxMessageSize int64, cookiePath string, isForwarded bool, accountPath string) func(w http.ResponseWriter, r *http.Request) {