g_malloc(), etc, never return NULL, by API contract. Likewise, by
extension, no other glib function ever returns NULL due to lack of
memory. So remove lots of unnecessary checks (the vast majority of
which would have immediately crashed had they ever run anyway, since
g_set_error(), g_warning(), and nm_log_*() all need to allocate
memory).
https://bugzilla.gnome.org/show_bug.cgi?id=693678
Allows to attach any connection to a bridge using the BRIDGE= key.
IP configuration is optional for bridge components but not
prohibited. Test case included.
NM was requiring that bond slaves have either no IP config or an
explicit "none"/"disabled" config. But the system scripts just ignore
any IP config that is present on a slave, so change NM to do that too
(but warn about it).
https://bugzilla.redhat.com/show_bug.cgi?id=838907
When the last character of the PSK was a backslash and the whole PSK was
enclosed in single quotes, the unquoting/unescaping code mistakenly took
trailing \' as an escaped quote and thus changed \ to '.
See also 79757f10f3 (that introduced the code).
Single quotes ensure we don't break initscripts (bash processing) when the
string contains special characters. Special handling is necessary for single
quotes characters. They have to be escaped and the whole string has to be
prepended with '$' character so that bash is happy.
This change also filters out CR and LF characters as they break WPA_PSK
variable and could pose security issues.
