The dashboard's link to Stalwart's own administration needed
STALWART_ADMIN_URL, which an operator had to know to set. Everything it
holds can be read from the server:
- the origin is the host Stalwart advertises in its own session URLs, the
one people reach it at even when ihasmail talks to it on a private
address;
- the prefix is where its web interface application is installed. The
production server's x:Application reads "Stalwart Web Interface",
enabled, urlPrefix {"/admin", "/account"}, and /admin is also what
Stalwart writes at first boot.
So, for an account that administers, the account info fetch now asks the
account's own server for its applications and links to origin + /admin/.
An installation whose web interface is disabled or moved gets no link; an
administrator who may not read applications gets Stalwart's default
/admin. It is cached with the rest of the account info.
STALWART_ADMIN_URL and a servers file entry's adminUrl still win, for an
administration that lives somewhere else. A routed domain without one now
takes what its own server said, never the default server's.
A line under the cards says where the rest is: detailed metrics, the
delivery queue, logs and server settings are in Stalwart's own
administration. It links there when the operator sets STALWART_ADMIN_URL,
and stays plain text otherwise, because STALWART_URL is how this server
reaches Stalwart and is often an address no browser can open.
Several servers: a servers file entry may now be an object,
{"url": ..., "adminUrl": ...}, and a session routed to that server gets its
adminUrl. A routed domain without one gets no link rather than the default
server's, for the same reason routing never falls back. The URL is sent
only to a session that may administer.
The shipped example file stopped the server at startup: its "_comment"
key was read as a domain and refused as not a URL, while the test that
checks the example skipped it. Keys starting with an underscore are notes
now -- no mail domain starts with one -- and the example is also loaded
through the real parser in a test, so the two cannot disagree again.
Two new strings, in all nine catalogues.
One ihasmail in front of several Stalwarts, from #238. STALWART_URL stays
required and stays the default, so an installation that sets nothing behaves
exactly as it always has -- the mapping only adds domains that go elsewhere.
An unlisted domain goes to the default. So does a bare username, which
Stalwart accepts and which has no domain to map at all.
A listed domain never falls back. If its server is unreachable that sign-in
fails rather than retrying against the default, because falling back would
authenticate somebody against a server their domain was deliberately routed
away from -- and if the same account name existed there, they would land in
another tenant's mailbox. The fallback is a decision about unmapped domains,
taken before any network call, not a recovery path.
Smaller than it sounds because only four places read config.stalwartUrl, all
in upstream.ts. The upstream session now records which server issued it, since
the relative URLs inside it only mean anything against that server, and every
route already holding a session gets the right upstream without a second
lookup. The client is untouched: it talks to one proxy and never learns there
is more than one server behind it, which is exactly why this is small and
several-servers-at-once is not.
The upstream is derived from the username rather than stored on the session,
so a mapping change takes effect on restart instead of being frozen into
sessions that outlive it.
Validated at boot the way the settings policy is: malformed JSON, a duplicate
domain once normalised, a missing file or a value that is not an http(s) URL
all stop the server. Domains are lower-cased and stripped of a trailing dot,
because that is how one arrives off a username and comparing them any other
way means a mapping that silently never matches. The servers themselves are
not contacted -- a mapping is a routing table, not a health check, and one
customer's outage must not stop ihasmail starting for the other four.
Eight tests on the routing, two on the shipped example, and the four refusals
checked by hand against a real config load.
jcoffey-dev