/usr/share/upstart/sessions/unity-greeter-session-broadcast-session.conf is in unity-greeter-session-broadcast 0.1+14.04.20140324-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | description "Unity Greeter Session Broadcast Session Component"
author "Ted Gould <ted@canonical.com>"
task
#TODO: Check GSettings Key
start on dbus BUS=system SIGNAL="StartUrl" INTERFACE="com.canonical.Unity.Greeter.Broadcast" OBJPATH="/com/canonical/Unity/Greeter/Broadcast"
pre-start script
if [ -z $ARG0 ] ; then
stop
exit 1
fi
if [ $ARG0 != $USER ] ; then
stop
exit 1
fi
OWNER=`gdbus call --system --dest org.freedesktop.DBus --object-path / --method org.freedesktop.DBus.GetNameOwner com.canonical.Unity.Greeter.Broadcast | cut -d "'" -f 2`
if [ -z $OWNER ] ; then
stop
exit 1
fi
if [ $OWNER != $SENDER ] ; then
stop
exit 1
fi
end script
exec url-dispatcher ${ARG1}
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