Commit graph

9 commits

Author SHA1 Message Date
Thomas Haller
1c6b50f6ea
libnm: add code comment about preserving ABI for libnm GObject structs
(cherry picked from commit f3abf2491a)
2021-06-21 17:25:36 +02:00
Thomas Haller
65278461a3
libnm: hide NMSetting types from public headers
When subclassing a GObject type, the class and object structs
must be available and defined in the header.

For libnm, and in particular for NMSetting classes, we don't want
users to subclass NMSetting. It also doesn't work, because libnm
has internal code that is necessary to hook up the NMSetting class.
You cannot define your own type and make it work together with
libnm.

Having the structs in public headers limits what we can do with them.
For example, we could embed the private data directly in the structures
and avoid the additional indirection.

This is an API break, but for something that most likely nobody cares
about. Or better, nobody should care about. API is not what is
accidentally defined in a header, API was the library provides to
meaningfully use. Subclassing these types is not meaningful and was
only accidentally possible so far.

Only hide the structs for now. More cleanup is possible later. We shall
however aim to keep the padding and struct layout to not also break ABI.

(cherry picked from commit e46d484fae)
2021-06-11 22:36:50 +02:00
Simon McVittie
a90a7b2d5f
libnm: Don't crash if service tells us a new key management mode
The NetworkManager service sometimes adds new key management modes.
If it does, an older client library (perhaps in a container, or loaded
into a pre-existing process before an upgrade) shouldn't crash when
talking to a newer NetworkManager service over D-Bus.

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/744

Signed-off-by: Simon McVittie <smcv@collabora.com>

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/887

Fixes: 4c4f59674a ('2007-10-23  Dan Williams  <dcbw@redhat.com>')

(cherry picked from commit 18c76388f0)
2021-06-10 23:25:50 +02:00
Jonas Dreßler
a4b95a9fcd
libnm-core: Don't allow disabling PMF when using WPA3 key management
Modern WPA3 authentication methods like SAE and WPA-EAP-SUITE-B-192 need
to have management frame protection set to required according to the
standard. Since the last commit, we enforce this automatically when
key-mgmt is set to 'owe', 'sae' or 'wpa-eap-suite-b-192', so disabling
it manually should not be possible.

Add a check to the pmf property that makes sure it can't be set to
'disabled' or 'optional' when one of those key-mgmt methods is used.
2021-05-06 22:23:28 +02:00
Jonas Dreßler
e06f9508d1
libnm-core: Rewrite comment of key-mgmt property
The key-mgmt property of NMSettingWirelessSecurity is slightly confusing
when you know there's also a wpa_supplicant configuration option called
"key_mgmt". Our property is not the same as that supplicant option even
though they do have things in common. NMs key-mgmt is not exactly meant
to configure which AKM suites you want to use, but rather which method
of wifi security is being used (so "wpa2+wpa3 personal", "wpa3 personal
only" or "wpa3 enterprise only").

Try to make this a bit clearer in the documentation of the property by
rewriting it and listing those security methods.
2021-05-06 22:23:28 +02:00
Jonas Dreßler
aab56adeea libnm-core: Correctly check for "sae" or "none" when wifi mesh is used
A small bug sneaked into commit 3ef3733c81 ('wireless-security: ensure
Mesh networks can't use anything but SAE') during review: Instead of
allowing only "sae" or "none" as key-mgmt, we now disallow "sae" and
"none", but allow anything else. This is obviously not what was
intended, so fix the check.

Also move the valid_key_mgmt check back up to where it was before that
commit, it seems we want to apply that check in all cases.
2021-04-30 07:38:20 +00:00
Jonas Dreßler
97a49430bb libnm-core: Correct an error message
wpa-eap-suite-b-192 is also valid here, so mention it in the error
message.
2021-04-30 07:38:20 +00:00
Thomas Haller
9dc84b32b0
build: move "shared/nm-{glib-aux,log-null,log-core}" to "src/libnm-{glib-aux,log-null,log-core}" 2021-02-24 12:48:20 +01:00
Thomas Haller
fdf9614ba7
build: move "libnm-core/" to "src/" and split it
"libnm-core/" is rather complicated. It provides a static library that
is linked into libnm.so and NetworkManager. It also contains public
headers (like "nm-setting.h") which are part of public libnm API.

Then we have helper libraries ("libnm-core/nm-libnm-core-*/") which
only rely on public API of libnm-core, but are themself static
libraries that can be used by anybody who uses libnm-core. And
"libnm-core/nm-libnm-core-intern" is used by libnm-core itself.

Move "libnm-core/" to "src/". But also split it in different
directories so that they have a clearer purpose.

The goal is to have a flat directory hierarchy. The "src/libnm-core*/"
directories correspond to the different modules (static libraries and set
of headers that we have). We have different kinds of such modules because
of how we combine various code together. The directory layout now reflects
this.
2021-02-18 19:46:51 +01:00
Renamed from libnm-core/nm-setting-wireless-security.c (Browse further)