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device: avoid changing immutable properties during reapply

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We allow to reapply a connection with different id, uuid, stable-id, autoconnect value.
This is allowed for convenience, so that a user can reapply a connection that differs
in these fields. But actually, these fields cannot be reapplied. That
is, their new values are not considered and the old values are continued
to be used.

Thus, mangle the reapplied connection to use the original, actually used
values.
This commit is contained in:
Thomas Haller 2017-01-10 20:07:23 +01:00
parent 304e2f56af
commit bf3b3d444c
1 changed files with 29 additions and 1 deletions
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30
src/devices/nm-device.c
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@ -8423,9 +8423,37 @@ reapply_connection (NMDevice *self,
diffs ? "" : " (unmodified)");
if (diffs) {
NMConnection *connection_clean = connection;
gs_free NMConnection *connection_clean_free = NULL;
{
NMSettingConnection *s_con_a, *s_con_n;
/* we allow re-applying a connection with differing ID, UUID, STABLE_ID and AUTOCONNECT.
* This is for convenience but these values are not actually changable. So, check
* if they changed, and if the did revert to the original values. */
s_con_a = nm_connection_get_setting_connection (applied);
s_con_n = nm_connection_get_setting_connection (connection);
if ( !nm_streq (nm_setting_connection_get_id (s_con_a), nm_setting_connection_get_id (s_con_n))
|| !nm_streq (nm_setting_connection_get_uuid (s_con_a), nm_setting_connection_get_uuid (s_con_n))
|| nm_setting_connection_get_autoconnect (s_con_a) != nm_setting_connection_get_autoconnect (s_con_n)
|| !nm_streq0 (nm_setting_connection_get_stable_id (s_con_a), nm_setting_connection_get_stable_id (s_con_n))) {
connection_clean_free = nm_simple_connection_new_clone (connection);
connection_clean = connection_clean_free;
s_con_n = nm_connection_get_setting_connection (connection);
g_object_set (s_con_n,
NM_SETTING_CONNECTION_ID, nm_setting_connection_get_id (s_con_a),
NM_SETTING_CONNECTION_UUID, nm_setting_connection_get_uuid (s_con_a),
NM_SETTING_CONNECTION_AUTOCONNECT, nm_setting_connection_get_autoconnect (s_con_a),
NM_SETTING_CONNECTION_STABLE_ID, nm_setting_connection_get_stable_id (s_con_a),
NULL);
}
}
con_old = applied_clone = nm_simple_connection_new_clone (applied);
con_new = applied;
nm_connection_replace_settings_from_connection (applied, connection);
nm_connection_replace_settings_from_connection (applied, connection_clean);
nm_connection_clear_secrets (applied);
} else
con_old = con_new = applied;