imsd-ofonod presents imsd on the system bus as an oFono modem — Manager at
/, Modem + VoiceCallManager at /imsd, a VoiceCall object per call — which
is what GNOME Calls' bundled ofono provider drives; Calls, Phosh and GNOME
Shell run unmodified. org.gnome.Calls is not a seam a third party can
provide (Calls exports it, nothing feeds it), and Calls' provider plugins
link private headers, so org.ofono is the only D-Bus contract available.
Pure GDBus translation of net.catcrafts.IMS1, no core, like imsd-dialerd.
Packaged as the opt-in imsd-ofono subpackage: the daemon, its unit
(Conflicts=ofono.service), the system-bus policy and a gschema override
that points Calls at the ofono provider instead of mm (the ModemManager
origin would offer the modem's CS voice path, which carries no audio on
these phones). The policy grants root send_destination=org.ofono: under
dbus-broker a broadcast is checked against the sender's send policy for
every name the receiver owns, so without it imsd's call signals never
reach the daemon.
Verified on a Fairphone 6 with GNOME Calls 50.0: outgoing and incoming
calls with audio both ways, answered and hung up through
org.gnome.Calls.Call. Known Calls-side gap documented in the README: after
the VoiceCallManager interface is withdrawn and re-added, Calls keeps the
old origin's CallAdded handler and eventually crashes.
fp6-img no longer builds imsd from source: its images install the apk this
repo's package CI publishes to the registry (pinned version + sha256), so
the image and 'apk upgrade' carry the same binary and APKBUILD.binary is
the only imsd packaging left. The two payload files the aport carried
(kde-modem-daemon skel override, systemd preset) move up to packaging/,
where build-package.sh now takes them from.
The pmbootstrap approach needed the privileged pmos runner, which only
fp6-img can reach. This repo already had the right flow: make-sysroot.sh
+ crafter-build --target=aarch64-alpine-linux-musl + APKBUILD.binary —
unprivileged, so it runs in an alpine:edge container on the ordinary
arch-latest runner, and minutes instead of qemu-chroot hours. The test
suite runs natively; the aarch64 binaries are further exercised by
fp6-img's chroot 'make check' whenever an image builds.
APKBUILD.binary gains the pmOS integration payload the canonical aport
ships (systemd subpackage, enable preset, wants symlink, config-gated
drop-in, kde-modem-daemon skel override) — required before this pipeline
may publish a version users upgrade to, or the upgrade would strip those
files. pkgver now follows implementations/main.cpp (sed'd by the CI, and
bumped to 0.3.1 in the file).
Classify 112/911 (plus EMERGENCY_NUMBERS) at Dial. A classified call
INVITEs urn:service:sos over the existing registration and, on any
non-2xx final not caused by the user hanging up (including the
setup-timeout CANCEL paths), retries once as a plain INVITE of the
dialled digits — the pre-0.3.0 behavior, so classification can never
place a call worse than the status quo. The reverse edge: a 380
Alternative Service whose body carries the emergency indication
upgrades an unclassified call to the sos URN; a bare 380 stays an
error, since promoting an arbitrary redirect would put a
non-emergency call through to a PSAP. An emergency dial preempts an
in-progress call, and an answer racing a deadline-initiated CANCEL is
taken instead of BYE'd (user-initiated CANCEL races still BYE).
No emergency registration, no emergency PDN, no CS fallback, no
SIM-less calling, no AML — and no carrier has confirmed the sos path
end-to-end. The README warning states exactly that.
Assisted-by: Claude:claude-fable-5
Userspace VoLTE/IMS daemon for mainline Linux phones (developed on the
Fairphone 6): a GLib-free core (SIP, SDP, USIM AKA, IPsec SA setup, RTP
media, call engine) behind a GDBus control daemon, a standalone AMR-WB
media leg, and a Plasma Dialer backend. C++26 modules built with Crafter
Build; the tree is clean under the project's house-style linter
(crafter-build lint) across all three build products.
Assisted-by: Claude:claude-fable-5
Signed-off-by: Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net>
