The old NMExportedConnection was used for both client and server-side classes,
which was a mistake and made the code very complicated to follow. Additionally,
all PolicyKit operations were synchronous, and PK operations can block for a
long time (ie for user input) before returning, so they need to be async. But
NMExportedConnection and NMSysconfigConnection didn't allow for async PK ops
at all.
Use this opportunity to clean up the mess and create GInterfaces that both
server and client objects implement, so that the connection editor and applet
can operate on generic objects like they did before (using the interfaces) but
can perform specific operations (like async PK verification of callers) depending
on whether they are local or remote or whatever.
This allows a device (or a companion) to signal that it is not a good
time for a specific device to autoconnect to a network.
The OLPC mesh device will use this to prevent automatic connection
to WLAN networks while the mesh device is active.
Like the OLPC mesh interface, which uses the same actual MAC & radio
as the OLPC wifi device, and thus when mesh is active the wifi
shouldn't be scanning.
The DBusGProxy was getting destroyed after all the ListConnections calls
were completed, and thus the dbus match was removed, and the signals
weren't getting reflected back up into NM to be handled. Fix that by
attaching the DBusGProxy to the NMConnection it represents to ensure it
lives until that NMConnection dies.
Found by Ricardo Salveti de Araujo <ricardo.salveti@openbossa.org>
The link cache was updated immediately, but the carrier state signals
were emitted a lot later, when the cache data was already stale. So
just update the cache at the same time we emit the signals. The
carrier-state-request stuff wasn't originally converted to deferred
for any netlink-specific reason, just to smooth the initial device
creation process in NM.
PK < 1.0 doesn't work with UID 0 processes that aren't spawned via a
session-manager, and thus don't have the XDG_SESSION_COOKIE in their
environment (which ConsoleKit uses to figure out what session the
caller is in). But since root could just scribble over the config
files anyway, bypassing PK for UID 0 doesn't meaningfully decrease
security.
