SMS-over-SIP is confirmed unavailable on this DID (the account's SMS tab
only offers "Forward to URL", no MESSAGE/INVITE option) so the diagnostic
dialplan from the previous commit is dead weight for delivery purposes,
though pstn-trunk.sh's message_context wiring stays since it's harmless
and costs nothing to leave in place.
Pivots the whole service: same proven HTTP-webhook front end (rate limit,
constant-time token check, message/from/to extraction), but the delivery
target changes from a push notification to a real SIP MESSAGE landing in
the extension's own softphone (Sipnetic), via Asterisk's Manager
Interface. "Direct mode" and all ntfy options are removed entirely per
instruction to fully replace ntfy, not keep both paths.
Recipient resolution reuses the exact on-disk formats
services/security-dashboard.sh already reads/writes: DID -> owner from
pstn-personal-dids.conf, and for a Ring-Group owner ("@Name"), that
group's current members from pstn-groups.conf -- so delivery always
reflects live DID ownership and live group membership, not a snapshot
from assignment time.
AMI access is scoped tightly: a dedicated "smsrelay" manager.conf user
with only the "message" permission class, bound to 127.0.0.1, secret
generated via generate_password. The service account also gets a POSIX
ACL grant (not chmod/group, which the container's entrypoint reverts on
every restart) for read-only access to the two config files above.
Flagged as UNVERIFIED in code comments and will need a live test: the
"message" AMI permission class name and MessageSend's To/From/Body
parameter names are believed correct from documentation but unconfirmed
against a real Asterisk instance. ami_deliver() logs every AMI response
in full specifically so the first real delivery attempt is
self-diagnosing if something here is wrong.
Verified before commit: bash -n on the full file, and py_compile on the
extracted relay.py (configparser/socket/hmac/http.server, all stdlib).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JDyKC6Kdg7tofmYSmRtgww
Claude
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