172 Commits

Author SHA1 Message Date
Michael Stapelberg
20dd872fbe backup: skip “nobackup” and “srv” directories 2021-09-01 09:27:49 +02:00
Michael Stapelberg
b88ddd41c3 netconfig: don’t try to add bridge to itself 2021-06-12 22:24:38 +02:00
Michael Stapelberg
bfb94377f4 netconfig: move bridge creation into its own function
also don’t short-circuit the rest of the configuration if bridge config fails
2021-06-12 18:25:37 +02:00
Michael Stapelberg
cffd872346 netconfig: implement bridge configuration
fixes https://github.com/rtr7/router7/issues/65
2021-06-06 15:43:55 +02:00
Robert Obryk
f8d1b4c8f2
internal/dhcp4: make persistent errors actally persistent (#62)
Previously, a permanent error would not be persisted for future
invocations of ObtainOrRenew. In practice, the daemon immediately
exited, so this made no difference.
2020-11-23 09:35:00 +01:00
Robert Obryk
8de4eb7ba1
internal/dns: prevent upstreams from being lost during reordering (#63)
If upstreams were reordered between start of an upstream request and its
conclusion, the move-to-front operation would likely incorrectly reorder
upstreams: duplicate one and remove another. Instead, we abandon the
move-to-front operation if that was about to happen.
2020-11-23 09:34:04 +01:00
Robert Obryk
0507d93b3d
dhcp4d: ensure that SetHostname operates on the correct lease (#64)
Previously SetHostname could operate on an expired lease, or even on a
lease for a different hwaddr, if the lease for the correct hwaddr
expired and the same lease ID was given away to someone else.

That's though mostly a theoretical concern, given the actual usage of
SetHostname and the time scales involved.
2020-11-23 09:32:42 +01:00
Michael Stapelberg
7f135438b8 dhcp4d: mention apple-suggested lease time of 1 hour 2020-11-01 19:24:24 +01:00
Michael Stapelberg
a8fce3cbbc diag: drain ping reply channel to avoid goroutine leak 2020-09-14 22:10:09 +02:00
Michael Stapelberg
416c1a58f6 diag: plug socket leak by adding missing Close() 2020-09-14 22:10:07 +02:00
Michael Stapelberg
876f8e320f netconfig: de-configure old DHCPv4 addresses from uplink0
It is generally not a good idea to have multiple IP addresses on the same
interface unless managing their relative priorities via metrics etc.

During an outage, I noticed that with multiple IP addresses,
Linux was using the old obsolete one to send out packets,
which does not work with the ISP.

With this change,
we still hold on to IP addresses for as long as possible,
but no longer.

fixes issue #57
2020-09-12 19:58:47 +02:00
Michael Stapelberg
ae8cfee616 dhcp6: inspect server advertisment IAPD and report error, if any
The fiber7 DHCPv6 servers (sometimes?) use this field for reporting errors.
2020-07-02 22:06:55 +02:00
Michael Stapelberg
aa14d119e6 dyndns: add log message when records are updated
Now both cases are covered.
2020-05-28 17:24:51 +02:00
Michael Stapelberg
decb0978d7 dyndns: update to newer libdns/cloudflare, remove workaround 2020-05-28 17:22:24 +02:00
Michael Stapelberg
7950291db6 dyndns: tweak up-to-date message output 2020-05-28 09:42:55 +02:00
Michael Stapelberg
4a5f55a5de defense in depth: verify hex.DecodeString length
related to #49
2020-05-27 09:50:04 +02:00
Matt Layher
ead58ad72c
cmd/dyndns: prototype for dynamic DNS daemon (#50)
Updates #46.

Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-23 23:06:21 +02:00
Matt Layher
7aeb51e9ec
internal/dhcp4d: handle DHCPDECLINE and fix bug regarding MacBook declining leases (#48)
Fixes #40

Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-23 20:53:13 +02:00
Matt Layher
fe68c2dd52
internal/radvd: add support for DNSSL (#47)
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-23 19:52:52 +02:00
Michael Stapelberg
53c495091e quirk: enforce minimum lease time of 1 hour for Nintendo devices
The Nintendo Switch has been observed to hold on to IP addresses even after
their expiration. My guess is that this is an oversight: likely the device
enters power saving mode with a configured IP address and just sleeps through
the expiration time.

As the device seems to wake up once every hour, we enforce a minimum lease time
of 1 hour, but only for affected devices. The rest of the network gets short
lease times.

https://twitter.com/zekjur/status/1263949112036282374
2020-05-23 09:07:17 +02:00
Matt Layher
61174cde06
internal/netconfig: add missing error check
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 17:04:31 -04:00
Matt Layher
9f6257b046
internal/dns: fix staticcheck issues
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 17:02:33 -04:00
Matt Layher
b8c40958e8
internal/dhcp6: fix error case
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 17:00:43 -04:00
Matt Layher
411780cd8e
internal/dhcp4: fix error case
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 17:00:07 -04:00
Matt Layher
dd7c3a8a5f
internal/testing/dnsmasq: panic in goroutine instead of fatal
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 16:55:46 -04:00
Matt Layher
8efea22943
internal/radvd: remove dead types
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 16:52:52 -04:00
Matt Layher
e1f2b975a1
internal/dhcp4d: fix staticcheck issues
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 16:51:32 -04:00
Matt Layher
107a8f0425
internal/radvd: switch to github.com/mdlayher/ndp types (#43)
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-05-09 22:50:44 +02:00
Michael Stapelberg
2b6ab5b2bd dhcp4d: make hostname override settable from status page 2020-04-12 10:33:11 +02:00
Chris K
4f0efc7b18
dhcp6: use new IAPD & Prefix getters (#41)
Signed-off-by: Chris Koch <chrisko@google.com>
2020-03-13 08:47:38 +01:00
Michael Stapelberg
e67fb4dd71 diagd: make output look good in a terminal, too
curl diagd.router7/
2020-03-11 22:12:00 +01:00
Chris K
ffc4c21bcd
dhcp6: use new getters (#37)
Signed-off-by: Chris Koch <chrisko@google.com>
2020-03-07 09:35:59 +01:00
Michael Stapelberg
dba1dad718 wireguard: switch to wgctrl package
related to #14
2020-02-16 00:15:23 +01:00
Michael Stapelberg
bfba9f17af netconfigd: collect all errors but keep going 2020-02-15 23:38:37 +01:00
Michael Stapelberg
96b626897a netconfigd: work not only with uplink0, but also eth0 and ens3
This makes it possible to use netconfigd on gokrazy Raspberry Pi installations.
2020-02-15 23:37:29 +01:00
Michael Stapelberg
ef60a01f3f netconfigd: continue if interfaces.json does not exist 2020-02-15 23:35:51 +01:00
Michael Stapelberg
a543cb9a34 dhcp4d: add header describing whether lease is active
Should be interpreted by the DHCP server so that other programs don’t need to
hard-code the lease time.
2020-01-31 19:11:08 +01:00
Michael Stapelberg
41985d6378 dhcp4d: reduce lease period to 20 minutes
This forces devices to renew the lease more often, which is nice when you want
to tie home automation behavior to DHCP lease validity.
2020-01-31 18:23:50 +01:00
Michael Stapelberg
73bd5c6a50 dhcp6: T1 is now already a time.Duration
see https://github.com/insomniacslk/dhcp/pull/347
2020-01-03 08:06:17 +01:00
Michael Stapelberg
3b5cf99b29 dhcp6_test: add new DHCPv6 infra packet capture 2019-12-02 10:43:39 +01:00
Michael Stapelberg
70edcab16b dns: return NXDOMAIN for DHCP leases once they expire 2019-09-07 19:27:12 +02:00
Michael Stapelberg
fa82132962 dhcp4d: add HostnameOverride field
This can be used to permanently override a hostname, regardless of whether the
lease is static or not. We use a separate field because we want devices to be
able to change their hostname themselves, until we override it.
2019-08-30 09:06:21 +02:00
Michael Stapelberg
4cde5ec6fc dns: fix resolution of uppercase host names, add test 2019-08-07 18:18:51 +02:00
Michael Stapelberg
8fb81f90b1 dns: make more recent DHCP leases overwrite older ones
fixes #20
2019-07-20 12:23:48 +02:00
Michael Stapelberg
36995097b9 make local name resolution case-insensitive
fixes #34
2019-07-20 12:07:30 +02:00
Michael Stapelberg
975f05d7ac fix dhcp4d_test.go 2019-07-20 11:30:52 +02:00
Michael Stapelberg
c602f1d6b6 dhcp4d: introduce -interface flag 2019-07-20 10:50:30 +02:00
Michael Stapelberg
c0067c5aa5 change diff order to -want +got
This is easier to read and consistent with how we do things at work.
2019-07-11 08:42:21 +02:00
Michael Stapelberg
54843950dd dhcp6: allow overriding hardwareaddr in test
This fixes the breakage introduced by commit
8166b9a9db
2019-04-29 19:16:19 +02:00
Michael Stapelberg
ea8efe1978 log hardwareAddr for debugging travis 2019-04-29 19:02:39 +02:00