In the specific case that triggered this bug, both eth0 and eth0.123
existed and were configured before NM started, and a valid saved connection
existed for eth0.123. eth0 was ordered before eth0.123 in the Platform's
link list. When the end of add_devices() was reached for eth0 and
system_create_virtual_devices() was called, NM created an NMDevice for
the pre-existing eth0.123 link due to the saved connection, and
ignored the existing configuration because system_create_virtual_device()
re-calls add_device() with generate_con = FALSE.
Instead, we should allow system_create_virtual_device() to call add_device()
with generate_con = TRUE if the interface existed before NM created it. We
only want to skip connection assumption if the device was actually just
created by NM, in which case it cannot have any configuration to assume.
This didn't previously matter because BT/WWAN/WiFi/ADSL can't easily
assume existing connections due to the external helpers involved, but
when we converted Team support to a plugin we now want to allow this.
Instead of handling iBFT (iSCSI Boot Firmware Table) in the ifcfg-rh plugin,
create a new plugin for it. This allows all distributions to use iBFT
configuration, and makes both iBFT handling and ifcfg-rh less complicated.
The plugin (like the old ifcfg-rh code) creates read-only connections backed
by the data exported by iscsiadm. The plugin does not support adding new
connections or modifying existing connections (since the iBFT data is
read-only anyway). Instead, users should change their iBFT data through
the normal firmware interfaces.
Unmanaged devices can be configured through NetworkManager.conf and the
normal 'keyfile' mechanisms.
(In the future, we'll read this data directly from the kernel's
/sys/firmware/ibft/ethernetX directory instead of iscsiadm, since the
kernel has all the information we need and that's where iscsiadm gets
it from anyway.)
https://bugzilla.gnome.org/show_bug.cgi?id=734009
Even if we never receive an RA, if there are manually-specified or external
addresses, consider IPv6 to complete successfully. No reason to fail IPv6
if we have IP configuration already, but RA doesn't respond. If RA shows
up again, we're still listening for it and will apply the config at that
time.
Reporter left SLAAC enabled (because it's default and requires being
explicitly turned off) and added manual IPv6 address. They expected that
address to be assigned very soon after starting the connection, but it was
not assigned.
This happened because NM waits for RA before assigning any IPv6 configuration,
including the manually specified addresses. In the reporters case, there was
no IPv6 router on the network, so NM waited indefinitely for a router
advertisement and never applied any IPv6 configuration.
It seems reasonable to apply any IPv6 configuration we have available, when
we have it. We already apply RA configuration before starting DHCP, and
apply DHCP configuration if/when we get that.
The IPv4 pre-commit hook was called right before the config was
committed, while the IPv6 one was called before commit in only
one case (from nm_device_activate_ip6_config_commit). The IPv4
behavior is the intended behavior.
Note that this doesn't have any actual effect yet, since nothing
actually implements the IPv6 pre-commit hook
by disconnecting signal handlers in dispose().
Commit 6a19e68a moved nm_connection_clear_secrets() from plugins' finalize() to
NMSettingsConnection's dispose(). But clearing secrets emits "changed" signal
which cause changed_cb() to be called and emit_updated() scheduled. And
emit_updated() was called later after finalize() on released object.
The crash can be invoked by having two keyfile connection files with the same
uuid in them.
Backtrace:
(NetworkManager:12262): GLib-GObject-WARNING **: attempt to retrieve private data for invalid type 'NMSettingsConnection'
Program received signal SIGSEGV, Segmentation fault.
emit_updated (self=0xf38dd0 [NMSettingConnection]) at settings/nm-settings-connection.c:401
401 NM_SETTINGS_CONNECTION_GET_PRIVATE (self)->updated_idle_id = 0;
(gdb) bt
#0 emit_updated (self=0xf38dd0 [NMSettingConnection]) at settings/nm-settings-connection.c:401
#1 0x0000003c49647825 in g_main_dispatch (context=0x785970) at gmain.c:2539
#2 g_main_context_dispatch (context=context@entry=0x785970) at gmain.c:3075
#3 0x0000003c49647b58 in g_main_context_iterate (context=0x785970, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3146
#4 0x0000003c49647f52 in g_main_loop_run (loop=0x7857c0) at gmain.c:3340
#5 0x000000000042d4e9 in main (argc=1, argv=0x7fffffffe508) at main.c:679
This wpa_supplicant option is not named "private_key_passwd2". Looks
like this regressed in e5ed391f28.
Signed-off-by: Geoffrey Thomas <gthomas@mokafive.com>
For NMDeviceWifi and NMDeviceWimax, the printf format string for
nm_utils_complete_generic() was created based on ssid/nsp. Since
these input strings are untrusted, this is a serious bug.
Signed-off-by: Thomas Haller <thaller@redhat.com>
verify() used to modify interface-name of the base settings. This is
discouraged, because verify() should not touch the connection.
For libnm-core we can change behavior and only modify the connection
in normalize().
Also, be more strict not to verify() sucessfully on invalid
interface-name.
Signed-off-by: Thomas Haller <thaller@redhat.com>
nm_connection_normalize() can now add the slave setting as needed. Remove
the duplicate functionality.
This undoes commit 664d64e0c0
but the same functionality is now provided via normalize().
Signed-off-by: Thomas Haller <thaller@redhat.com>
Some NMSettingConnection:slave-type types require a matching slave #NMSetting.
Add normalization of either the 'slave-type' property or the slave-setting.
Also be more strict in NMSettingConnection:verify() to enforce an
existing slave-setting depending on the slave-type.
Signed-off-by: Thomas Haller <thaller@redhat.com>
At the end of reading the connection, reader calls nm_connection_normalize()
to normalize the connection. Normalization inplicitly verifies the
connection.
Doing a verify along the way is not needed and even harmful. Soon further
checks will be added that make verify() fail, but normalize()
can fix the connection. So, while reading, we might actually have
an invalid connection, that will be normalized as last step.
Signed-off-by: Thomas Haller <thaller@redhat.com>
The new nm_connection_normalize() function allows to fixup an incomplete connection.
The keyfile reader should call normalize on a connection, so that we can implement
common normalizations there instead of inside the settings plugin.
Signed-off-by: Thomas Haller <thaller@redhat.com>
The recent change c88b832ce9 allows for
missing 'id' and 'uuid' entries. Further make the keyfile reader
more accepting, by creating a missing NMSettingConnection.
Signed-off-by: Thomas Haller <thaller@redhat.com>
Add a header file to expose private utility functions from libnm-core
that can be used by NetworkManager (core) and libnm.so. The header
is also used to give privileged access to libnm-core. Since NM links
statically, these functions are not exported and not part of public ABI.
This also removes the NM_UTILS_PRIVATE_CALL() macro and libnm.so no
longer exports nm_utils_get_private().
Before, this functionality was partly declared in nm-utils-private.h.
This was wrong because nm-utils-private.h is for functionality
entirely private to libnm-core.
Signed-off-by: Thomas Haller <thaller@redhat.com>
A few of the settings plugins were calling nm_connection_clear_secrets()
from their finalize() method, but this call can emit signals, and by
the time finalize() runs, the object has a refcount of 0. Signals
cannot be emitted from a finalized object, but instead could be
emitted from dispose() before the object is finalized.
Instead of moving the nm_connection_clear_secrets() to dispose() in each
plugin, make the behavior generic instead. The settings plugins' parent
object is NMSettingsConnection, so clear secrets there. Plus,
NMSettingsConnection caches system & agent secrets with NMSimpleConnection
objects, so clear secrets in NMSimpleConnection's dispose too.
Commit fb6cde50 changed from setBlobs in the old wpa_supplicant D-Bus
interface, which returned an integer status code, to AddBlob in the new
one, which doesn't, but didn't account for that change. That caused
error messages of the form "Couldn't set network certificates: Too few
arguments in reply." on valid connection requests.
Signed-off-by: Geoffrey Thomas <gthomas@mokafive.com>
The fact that NMRemoteConnection has to be an NMConnection and
therefore can't be an NMObject means that it needs to reimplement bits
of NMObject functionality (and likewise NMObject needs some special
magic to deal with it). Likewise, we will need a daemon-side
equivalent of NMObject as part of the gdbus port, and we would want
NMSettingsConnection to be able to inherit from this as well.
Solve this problem by making NMConnection into an interface, and
having NMRemoteConnection and NMSettingsConnection implement it. (We
use some hacks to keep the GHashTable of NMSettings objects inside
nm-connection.c rather than having to be implemented by the
implementations.)
Since NMConnection is no longer an instantiable type, this adds
NMSimpleConnection to replace the various non-D-Bus-based uses of
NMConnection throughout the code. nm_connection_new() becomes
nm_simple_connection_new(), nm_connection_new_from_hash() becomes
nm_simple_connection_new_from_hash(), and nm_connection_duplicate()
becomes nm_simple_connection_new_clone().
nm_connection_lookup_setting_type() and
nm_connection_lookup_setting_type_by_quark() have nothing to do with
NMConnection. So move them to NMSetting (and rename them to
nm_setting_lookup_type() and nm_setting_lookup_type_by_quark()).
Previously, src/nm-ip4-config.h, libnm/nm-ip4-config.h, and
libnm-glib/nm-ip4-config.h all used "NM_IP4_CONFIG_H" as an include
guard, which meant that nm-test-utils.h could not tell which of them
was being included (and so, eg, if you tried to include
nm-ip4-config.h in a libnm test, it would fail to compile because
nm-test-utils.h was referring to symbols in src/nm-ip4-config.h).
Fix this by changing the include guards in the non-API-stable parts of
the tree:
- libnm-glib/nm-ip4-config.h remains NM_IP4_CONFIG_H
- libnm/nm-ip4-config.h now uses __NM_IP4_CONFIG_H__
- src/nm-ip4-config.h now uses __NETWORKMANAGER_IP4_CONFIG_H__
And likewise for all other headers.
The two non-"nm"-prefixed headers, libnm/NetworkManager.h and
src/NetworkManagerUtils.h are now __NETWORKMANAGER_H__ and
__NETWORKMANAGER_UTILS_H__ respectively, which, while not entirely
consistent with the general scheme, do still mostly make sense in
isolation.
The prototype of dhclient_start() changed in 30cdd1248 but that
commit didn't update stop() correctly. Clearly treating a gboolean
as pid_t isn't going to work. Second, we don't want to watch the
child process on DHCP release because we're just going to kill it
shortly after.
For devices where we don't set the hardware address at construct time,
the first call to nm_device_update_hw_address() was hitting a
return-if-fail.
Also, when updating the hardware address, we were leaking the old
value.
Now that we have nm_utils_hwaddr_matches() for comparing addresses
(even when one is a string and the other binary), there are now places
where it's more convenient to store hardware addresses as strings
rather than binary, since we want them in string form for most
non-comparison purposes. So update for that.
In particular, this also changes nm_device_get_hw_address() to return
a string.
Also, simplify the update_permanent_hw_address() implementations by
assuming that they will only be called once. (Since they will.)
Add nm_utils_hwaddr_matches(), for comparing hardware addresses for
equality, allowing either binary or ASCII hardware addresses to be
passed, and handling the special rules for InfiniBand hardware
addresses automatically. Update code to use it.
Include <linux/if_ether.h> and <linux/if_infiniband.h> from
nm-utils.h, to get ETH_ALEN and INFINIBAND_ALEN, and remove those
includes (as well as <net/ethernet.h> and <netinet/ether.h>, and
various headers that had been included to get the ARPHRD_* constants)
from other files where they're not needed now.
