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gdbus: Allow cross-namespace connections to Linux session and system buses

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The dominant implementations of the well-known session and system
message buses are the reference implementation from the dbus project
(dbus-daemon) and the sd-bus-based reimplementation dbus-broker, both
of which have correct implementations for EXTERNAL authentication with
an unspecified authorization identity.

This makes it reasonably safe to assume that the well-known message
buses can cope with the unspecified authorization identity, even if we
cannot make the same assumption for custom servers such as the ones
used in ibus and gvfs (which might have been started with an older
GLib version before upgrading GLib in-place).

Signed-off-by: Simon McVittie <smcv@collabora.com>
This commit is contained in:
Simon McVittie
2022-07-24 13:36:50 +01:00
parent e0a0749268
commit 32b226d1b1
5 changed files with 14 additions and 4 deletions
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4
gio/gdbusauth.c
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@@ -577,8 +577,8 @@ _g_dbus_auth_run_client (GDBusAuth *auth,
ClientState state;
GDBusCapabilityFlags negotiated_capabilities;
g_return_val_if_fail ((connection->flags & G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT), NULL);
g_return_val_if_fail (!(connection->flags & G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER), NULL);
g_return_val_if_fail ((conn_flags & G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT), NULL);
g_return_val_if_fail (!(conn_flags & G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER), NULL);
debug_print ("CLIENT: initiating");