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184 Commits

Author SHA1 Message Date
Michael Stapelberg
ce66287189 netconfig: make the MTU configurable 
Just in case we need to set it on an uplink0 interface at some point, for example.
 2022-06-15 23:19:43 +02:00
Michael Stapelberg
225c8e6abd radvd: ignore requests from other interfaces than the configured one 
Announcing networks into uplinks is never a good idea 🙈
 2022-06-08 17:42:55 +02:00
Michael Stapelberg
f4dd972e54 netconfig: WireGuard: set up host routes instead of DHCP default 
related to https://github.com/rtr7/router7/issues/52
 2022-06-07 23:22:08 +02:00
Michael Stapelberg
7d936f4844 allow configuring extra routes 
Useful for routing IPv6 subnets through a WireGuard tunnel.

related to https://github.com/rtr7/router7/issues/52
 2022-06-06 14:25:25 +02:00
Michael Stapelberg
f52deeed03 allow configuring extra addresses on interfaces 
Useful when you need IPv6 and IPv4 addresses on a WireGuard tunnel.
 2022-06-06 14:25:25 +02:00
Michael Stapelberg
ef7089dc61 radvd: switch to netip package for mdlayher/ndp 2022-03-25 09:09:26 +01:00
Michael Stapelberg
2014da4ca3 dhcp4d: display active devices based on LastACK 
This has the advantage that it also works for static DHCP leases,
provided the device obtains a DHCP lease at all (and isn’t configured with a
static IP address, like the shelly motion sensors for example).
 2022-03-12 17:38:16 +01:00
Michael Stapelberg
593cd8c12d export input/output nftables counters as well as forwarded 
Thus far, we have only had forwarded bytes metrics.

Notably, forwarded bytes does not include bytes that were sent by the router
itself, e.g. by the webserver or rsync server running on the machine.

fixes https://github.com/rtr7/router7/issues/71
 2022-03-08 22:47:18 +01:00
Michael Stapelberg
8dc93c66c4 netconfig: enable NAT hairpinning for port forwardings 
fixes https://github.com/rtr7/router7/issues/53
 2022-03-08 09:32:09 +01:00
Matt Layher
6d41b077a9
internal/dhcp*: switch to github.com/mdlayher/packet (#70) 
* internal/dhcp*: switch to github.com/mdlayher/packet
* internal/dhcp4d: update test constructor name to avoid packet conflict

Signed-off-by: Matt Layher <mdlayher@gmail.com>
 2022-02-21 23:39:06 +01:00
Michael Stapelberg
e07002721d teelogger: make writes to /dev/console non-blocking 
fixes https://github.com/rtr7/router7/issues/68
 2021-09-19 11:45:19 +02:00
Michael Stapelberg
575a14c394 dyndns: add zone to record name 
Otherwise, already existing records are not recognized correctly.
 2021-09-01 09:37:12 +02:00
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