A mechanical prettier --write over server/src, server/tests, server/scripts
and shared/src with the workspaces' .prettierrc; nothing but layout and
import order changes, and every file keeps the same set of imports. shared
is formatted throughout and its format baseline is empty. The server
baseline keeps the 35 files that Prettier would grow past their lint:size
limit (they need a split first, which is not a formatting change), and the
generated entity files stay as their generator writes them.
Since 4.3.0 the guard resolves a name to every address it has, and a
single blocked address refused the whole name. LAN DNS servers commonly
publish a host's fe80:: address next to its IPv4, so a self-hosted IdP on
such a name failed every login with "Requests to link-local /
cloud-metadata addresses are not allowed". Immich, Synology and the other
strict-guard integrations on the same kind of name failed the same way.
Both guards now leave a blocked address out of the list the socket is
pinned to and connect over the rest, and a name that resolves to nothing
else is still refused. A private address among the remaining ones still
needs ALLOW_INTERNAL_NETWORK under the strict guard, and
ALLOW_LINK_LOCAL_IPS works as before.
Leaving addresses out is only safe if the blocked set is complete, so the
strict guard now blocks everything the admin lane does. The AWS IMDSv6
(fd00:ec2::/32) and Alibaba (100.100.100.200, 100.100.100.100) metadata
addresses sit in ULA and CGNAT space, which ALLOW_INTERNAL_NETWORK opened
to any URL a user can type. Both guards also read an IPv4-mapped or
IPv4-compatible address as the IPv4 it carries: Node prints an AAAA
record of ::a9fe:a9fe as ::169.254.169.254, which passed both guards, and
::ffff:100.100.100.200 passed the admin lane. Neither guard connects to a
link-local or metadata address now, and the strict guard never connects
to loopback either.
The guard resolved a name to one address and pinned the socket to it. On a
dual-stack name whose AAAA came first that was an IPv6 many hosts cannot
reach on 443, and the request sat until the caller's timeout while the A
record would have answered at once. OIDC discovery, Dawarich, AirTrail, the
photo providers, a self-hosted router or Nominatim and the model endpoints
all ride this path.
The name is now resolved to every address it has, each one is checked, and
one blocked address blocks the name. The whole checked list goes to the
socket, IPv4 ahead of IPv6, where Node walks it itself and moves on after
its attempt timeout. Redirect hops do the same per hop. A caller that still
names one address gets exactly the old behaviour.
Maurice