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imsd, imsd-ofonod: let polkit decide call control, not the account name

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The system-bus policies granted net.catcrafts.IMS1 and org.ofono to root
and to the account `user`, postmarketOS's default name, so on a unit
whose account is called something else dbus denied every Dial from the
dialer — nothing in imsd's journal, nothing on screen. A field user
found it by trial (alyx report 14, 2026-09-20; ims ledger F14).

Let any local account reach both names and have the daemons decide:
placing, answering or ending a call needs polkit's
net.catcrafts.IMS1.Voice (the active local session; not an ssh login, an
inactive session or a system service account). imsd-ofonod asks about
its own callers, since its calls reach imsd as root. Reads such as the
status and the call list are not gated, and a refusal is logged with the
sender; a `--session` run, the development mode without root or polkit,
leaves the gate off. The check is ImsdBus, a small GLib module both
daemons link; the package depends on polkit.

An upgrade restarts both daemons (the previous commit), so the open
policy faces the old, ungated daemons only until the apk transaction
ends.

Tested on the dev phone (KPN) in builds of this series; not every path
has run there.
This commit is contained in:
Jorijn van der Graaf 2026-10-03 20:44:58 +02:00
commit f18baf2790
Signed by: jorijnvdgraaf
GPG key ID: 2937E59CDCC1BCFB
13 changed files with 245 additions and 52 deletions
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7
packaging/APKBUILD.binary
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@ -17,8 +17,9 @@ pkgdesc="Userspace IMS/VoLTE daemon for mainline Linux phones"
url="https://forgejo.catcrafts.net/Catcrafts/imsd"
arch="aarch64"
license="GPL-3.0-only"
# the media leg dlopen's the AMR-WB codecs; pw-record/pw-play drive PipeWire
depends="modemmanager libc++ opencore-amr vo-amrwbenc pipewire-tools"
# the media leg dlopen's the AMR-WB codecs; pw-record/pw-play drive PipeWire;
# polkit answers the daemons' call-control check (ImsdBus)
depends="modemmanager libc++ opencore-amr vo-amrwbenc pipewire-tools polkit"
# versioned provides = imsd satisfies soc-qcom-modem's 81voltd dependency AND
# excludes the real package: 81voltd serves the modem's own ims-PDN requests,
# which races imsd for the PDN and flaps it with a new prefix every ~2.5 min
@ -52,6 +53,8 @@ package() {
"$pkgdir"/etc/xdg/autostart/imsd-dialerd.desktop
install -Dm644 net.catcrafts.IMS1.conf \
"$pkgdir"/usr/share/dbus-1/system.d/net.catcrafts.IMS1.conf
install -Dm644 net.catcrafts.IMS1.policy \
"$pkgdir"/usr/share/polkit-1/actions/net.catcrafts.IMS1.policy
# the skel override hides kde-telephony's modem daemon autostart for the
# account created at install — imsd-dialerd owns those session bus names
install -Dm644 "$srcdir"/org.kde.modem.daemon.desktop \