40 lines
1.8 KiB
Nix
40 lines
1.8 KiB
Nix
# The gateway's own vhost, as a `services.hyperhive.gateway.vhosts`
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# declaration (rendered by ./declared-vhosts.nix): the `_` default server,
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# which answers unmatched `Host` with a bare 444.
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#
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# Scope: a service declares its own vhost and dns name in its own module,
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# the same way — the hive's dashboard and hive domain in
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# ../hive-c0re/vhosts.nix, pinned-hive discovery in
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# ../glue-matrix-hive-discovery.nix. That keeps a service's gateway surface
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# next to the service, and keeps this file to what the gateway itself
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# serves.
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{
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# The catch-all, and now *only* a catch-all: anything whose `Host`
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# matches no vhost gets an immediate 444 (close without a response)
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# rather than being served the hive's dashboard.
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#
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# `_` is the idiomatic spelling because it is not a legal hostname,
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# so it can never match a request by name — it serves traffic solely
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# by being `default_server`.
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#
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# ⚠️ It still gets TLS attrs from the gateway. It listens on the https port, so a
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# client connecting by IP completes a TLS handshake *before* nginx
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# can look at `Host` and reject it; with no cert the vhost fails to
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# load. The certificate will not match what such a client asked for
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# — that is unavoidable and correct: nothing can present a valid
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# cert for a name the operator never issued one for.
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#
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# The gateway renders `default` at `mkDefault` priority: an operator with their own
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# `default = true` vhost must be able to win without fighting
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# priorities. The assertion in ./default.nix catches the case where
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# they add one *without* turning this off, which nginx would
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# otherwise only report at runtime as a failed config test.
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"_" = {
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default = true;
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# A response to attach headers to is exactly what this vhost refuses.
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securityHeaders = false;
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extraConfig = ''
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return 444;
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'';
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};
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}
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