]> git.ipfire.org Git - thirdparty/dhcpcd.git/log
thirdparty/dhcpcd.git
2 years agochore: stat isn't portable, wc is
Roy Marples [Fri, 21 Apr 2023 13:58:25 +0000 (14:58 +0100)] 
chore: stat isn't portable, wc is

2 years agochore: include filesize in the distinfo
Roy Marples [Fri, 21 Apr 2023 10:08:32 +0000 (11:08 +0100)] 
chore: include filesize in the distinfo

2 years agochore: Makefile parts are more copy and pastable
Roy Marples [Thu, 20 Apr 2023 20:14:02 +0000 (21:14 +0100)] 
chore: Makefile parts are more copy and pastable

2 years agoRelease dhcpcd-10.0.1 v10.0.1
Roy Marples [Thu, 20 Apr 2023 11:16:36 +0000 (12:16 +0100)] 
Release dhcpcd-10.0.1

2 years agochore: fix release
Roy Marples [Thu, 20 Apr 2023 11:12:14 +0000 (12:12 +0100)] 
chore: fix release

2 years agochore: update build system to publish signed github releases
Roy Marples [Thu, 20 Apr 2023 11:00:32 +0000 (12:00 +0100)] 
chore: update build system to publish signed github releases

We rely on the GitHub CLI tools to do this.
We publish the compressed source tarball and a detached PGP
signature for it.
We add the SHA256 checksum of the tarball as a note on the release.
Automatic links to the changes are also given.

2 years agobpf: Always open /dev/bpf directly
Roy Marples [Thu, 13 Apr 2023 16:43:11 +0000 (17:43 +0100)] 
bpf: Always open /dev/bpf directly

Ignore _PATH_BPF as that's really a NetBSDism.
If /dev/bpf throws a wobbly then try /dev/bpfN for older kernels.

This allows cloning BPF on more BSD systems.

2 years agoRelease dhcpcd-10.0.0 v10.0.0
Roy Marples [Thu, 13 Apr 2023 10:59:00 +0000 (11:59 +0100)] 
Release dhcpcd-10.0.0

2 years agoFreeBSD no longer needs static linking
Roy Marples [Tue, 11 Apr 2023 18:25:03 +0000 (19:25 +0100)] 
FreeBSD no longer needs static linking

2 years agodhcpcd doesn't need to be statically linked on DragonFly
Roy Marples [Fri, 17 Mar 2023 11:11:39 +0000 (11:11 +0000)] 
dhcpcd doesn't need to be statically linked on DragonFly

2 years agoMerge remote-tracking branch 'github/privsep-musl'
Roy Marples [Thu, 16 Mar 2023 12:04:29 +0000 (12:04 +0000)] 
Merge remote-tracking branch 'github/privsep-musl'

2 years agoMerge remote-tracking branch 'github/dhcp6-ntp'
Roy Marples [Thu, 16 Mar 2023 12:02:33 +0000 (12:02 +0000)] 
Merge remote-tracking branch 'github/dhcp6-ntp'

2 years agoprivsep: Allow ioctl TIOCGWINSZ for dumping leases on musl
Roy Marples [Fri, 24 Feb 2023 10:17:27 +0000 (10:17 +0000)] 
privsep: Allow ioctl TIOCGWINSZ for dumping leases on musl

Fixes #186.

2 years agocontrol: Improve error handling if reading a control message fails
Roy Marples [Fri, 24 Feb 2023 10:16:26 +0000 (10:16 +0000)] 
control: Improve error handling if reading a control message fails

2 years agoRemove debug
Roy Marples [Thu, 23 Feb 2023 00:27:55 +0000 (00:27 +0000)] 
Remove debug

2 years agoprivsep: Allow madvise for musl.
Roy Marples [Thu, 23 Feb 2023 00:21:14 +0000 (00:21 +0000)] 
privsep: Allow madvise for musl.

Fixes #186.

2 years agoprivsep-linux: fix SECCOMP_AUDIT_ARCH missing ppc64le (#181)
CHEN Xiangyu [Thu, 9 Feb 2023 10:41:52 +0000 (18:41 +0800)] 
privsep-linux: fix SECCOMP_AUDIT_ARCH missing ppc64le (#181)

when dhcpcd running on ppc64le platform, it would be killed by SIGSYS.

Signed-off-by: Xiangyu Chen <xiangyu.chen@windriver.com>
2 years agoDHCP6: Request OPTION_NTP_SERVER to mirror DHCP
Roy Marples [Tue, 7 Feb 2023 18:25:45 +0000 (18:25 +0000)] 
DHCP6: Request OPTION_NTP_SERVER to mirror DHCP

RFC 5908 deprecates OPTION_SNTP_SERVERS.
However we can support both at the same time as our scripts
will uniqify the results if there are stupidly any duplicates.

Fixes #183.

2 years agooptions: Fix prior
Roy Marples [Tue, 7 Feb 2023 17:02:29 +0000 (17:02 +0000)] 
options: Fix prior

For #184.

2 years agooptions: Match exact string for environment changes
Roy Marples [Tue, 7 Feb 2023 16:39:27 +0000 (16:39 +0000)] 
options: Match exact string for environment changes

So that domain_name doesn't overwrite domain_name_servers.
Fixes #184.

2 years agoprivsep: Don't try to unlink the pidfile in test mode
Roy Marples [Tue, 7 Feb 2023 16:39:00 +0000 (16:39 +0000)] 
privsep: Don't try to unlink the pidfile in test mode

2 years agoFix incorrect CTASSERT in ND_OPT_DNSSL (#178)
Klaus Frank [Thu, 26 Jan 2023 10:23:55 +0000 (10:23 +0000)] 
Fix incorrect CTASSERT in ND_OPT_DNSSL (#178)

Fix incorrect CTASSERT in ND_OPT_DNSSL

2 years agoprivsep: Unload dev early if we are not the root process
Roy Marples [Mon, 9 Jan 2023 16:35:37 +0000 (16:35 +0000)] 
privsep: Unload dev early if we are not the root process

No point listening to it and newer udev throws an error
trying to unload when chrooted so this fixes that.

2 years agocompat: Remove literal suffix from md5.h
Roy Marples [Mon, 9 Jan 2023 11:16:13 +0000 (11:16 +0000)] 
compat: Remove literal suffix from md5.h

Modern compilers no longer complain without it, but do with it.

2 years agolinux: clean some more compiler warnings
Roy Marples [Mon, 9 Jan 2023 11:15:13 +0000 (11:15 +0000)] 
linux: clean some more compiler warnings

gcc-12 and clang-14 no longer emit any errors

2 years agolinux: Fix compile warning using clang
Roy Marples [Mon, 9 Jan 2023 10:09:45 +0000 (10:09 +0000)] 
linux: Fix compile warning using clang

2 years agoconfigure: Ensure that we use the return of the functions we test
Roy Marples [Sun, 8 Jan 2023 22:10:21 +0000 (22:10 +0000)] 
configure: Ensure that we use the return of the functions we test

As newer compiler defaults warn if they are not used.
Should fix #163.

2 years agoprivsep: Try sending error if we cannot send the message.
Roy Marples [Fri, 6 Jan 2023 11:14:45 +0000 (11:14 +0000)] 
privsep: Try sending error if we cannot send the message.

There is an error sending a reply from an INET6 sysctl RT dump
on FreeBSD-14 using the dhcpcd-9 branch.
It seems to be related to capsicum and doesn't happen on FreeBSD-13.
We should handle the error gracefully and allow dhcpcd to try to
contuinue regardless.

2 years agodhcp: Remove bootp arg from rt 3442 decoding
Roy Marples [Thu, 5 Jan 2023 11:17:12 +0000 (11:17 +0000)] 
dhcp: Remove bootp arg from rt 3442 decoding

Fixes a compile warning. Addendum to #161.

2 years agoWelcome to 2023.
Roy Marples [Thu, 5 Jan 2023 10:51:32 +0000 (10:51 +0000)] 
Welcome to 2023.

2 years agodhcp: Fix classless link local static routes (#161)
xvuko [Thu, 5 Jan 2023 09:02:52 +0000 (10:02 +0100)] 
dhcp: Fix classless link local static routes (#161)

Detecting host routes based on address comparison is not needed in
classless routes as /32 mask can be explicitly used. This detecting
mechanism did cause issues when gateway was set to 0.0.0.0 (link local
routes).

2 years agooptions: Fix parsing of strings.
Roy Marples [Fri, 23 Dec 2022 17:35:29 +0000 (17:35 +0000)] 
options: Fix parsing of strings.

If we are not passed a buffer we should blindly return the
result of trying to parse it has as a hex string - it will be zero.
Fixes 133.

2 years agohooks: Use --no-block for systemd
Roy Marples [Fri, 23 Dec 2022 16:42:23 +0000 (16:42 +0000)] 
hooks: Use --no-block for systemd

As we really don't want to block dhcpcd if systemd does.
Fixes #141.

2 years agoif: Again fix prior on NetBSD
Roy Marples [Fri, 23 Dec 2022 16:15:58 +0000 (16:15 +0000)] 
if: Again fix prior on NetBSD

2 years agoif: Fix issue with prior with privsep enabled
Roy Marples [Fri, 23 Dec 2022 16:13:09 +0000 (16:13 +0000)] 
if: Fix issue with prior with privsep enabled

Addition to #157.

2 years agoDHCP: Set option buffer length to 0 when freeing
Roy Marples [Fri, 23 Dec 2022 14:24:59 +0000 (14:24 +0000)] 
DHCP: Set option buffer length to 0 when freeing

As we test length of buffer when reallocating.
Fixes #156.

2 years agoif: Add if_freeifaddrs so we can free ifaddrs on all code paths
Roy Marples [Fri, 23 Dec 2022 13:54:22 +0000 (13:54 +0000)] 
if: Add if_freeifaddrs so we can free ifaddrs on all code paths

Fixes #157.

2 years agoarp: ignore invalid ARP probes according to RFC5227 (#145)
Laszlo Toth [Fri, 23 Dec 2022 13:31:43 +0000 (08:31 -0500)] 
arp: ignore invalid ARP probes according to RFC5227 (#145)

Some network devices can send probes where the source address in the frame
does not match the sender in the ARP request, due to firmware bugs or
crafted packets.
Without verification this can cause to fail the defense, so we lose the
address, then request a new one. This might lead to the DHCP address pool
being exhausted and all sorts of problems like frequent IP changes.

A real life example is that some Cisco devices can send ARP probes in bursts,
where the frame's source address is clearly invalid, so hosts running dhcpcd
release addresses frequently, e.g., Raspberry Pis.
Example output:
"invalid ARP probe, sender hw address mismatch (00:be:75:xx:xx:xx, 00:00:00:yy:yy:yy)"

RFC5227, Section 1.1 describes that the two addresses must match in case
of ARP probes, so add the extra check and log a warning if we receive an
invalid packet like that.

Signed-off-by: Laszlo Toth <laszlth@gmail.com>
2 years agoconfigure: --prefix also sets $prefix for compat with autoconf
Roy Marples [Mon, 17 Oct 2022 13:30:03 +0000 (14:30 +0100)] 
configure: --prefix also sets $prefix for compat with autoconf

Fixes #139

2 years agoCompilation fix on linux platform with clang (#130)
Alexey Kasyanchuk [Tue, 11 Oct 2022 16:53:02 +0000 (19:53 +0300)] 
Compilation fix on linux platform with clang (#130)

2 years agoprivsep: Improve the race to exit
Roy Marples [Tue, 6 Sep 2022 08:18:08 +0000 (09:18 +0100)] 
privsep: Improve the race to exit

Each process should now cleanly wait for child processes to exit.
They should only exit when no children left.

There is still no way to cleanly log the privilged process exiting
as well as the manager process as the manager needs the
privilged process to log.

Now, at least, dhcpcd should alway say it's exited.

2 years agodhcpcd: Remove last nanosleep
Roy Marples [Mon, 5 Sep 2022 20:37:32 +0000 (21:37 +0100)] 
dhcpcd: Remove last nanosleep

Fixes #128.

2 years agodhcpcd: Use eloop timeout to wait for pidfile removal
Roy Marples [Mon, 5 Sep 2022 12:20:50 +0000 (13:20 +0100)] 
dhcpcd: Use eloop timeout to wait for pidfile removal

As well as removing not enabled code to wait a bit before
removing the IP address when sending a DHCP RELEASE message.

This means that we no longer need to allow nanosleep in SECCOMP.

Hopefully fixes #127.

2 years agoprivsep: Don't find processes we just asked to stop
Roy Marples [Fri, 2 Sep 2022 11:54:25 +0000 (12:54 +0100)] 
privsep: Don't find processes we just asked to stop

We could rebind a lease, get a NAK and enter DISCOVER.
We need to restart the BPF in the middle as the BPF filter could
change.

As such, add a started flag to each privsep process and when
searching for a process by id only find started ones.
If we ask them to stop then the started flag is removed.

Fixes errors about writing to stopping processes an unknown
processes exiting.

2 years agoFix prior when asking dhcpcd to exit and it's not running
Roy Marples [Fri, 2 Sep 2022 11:02:25 +0000 (12:02 +0100)] 
Fix prior when asking dhcpcd to exit and it's not running

2 years agodhcpcd: Fix sending interface specific commands to manager process
Roy Marples [Thu, 1 Sep 2022 19:48:40 +0000 (20:48 +0100)] 
dhcpcd: Fix sending interface specific commands to manager process

Seems to have been broken for a while .... good to have this fixed.

2 years agoNormalise `dhcpcd is not running` message
Roy Marples [Wed, 31 Aug 2022 19:04:11 +0000 (20:04 +0100)] 
Normalise `dhcpcd is not running`  message

2 years agoinet6: Tokenised IPv6 Identifiers fix man page
Roy Marples [Wed, 31 Aug 2022 15:58:28 +0000 (16:58 +0100)] 
inet6: Tokenised IPv6 Identifiers fix man page

One typo, again for #101.

2 years agoinet6: Fix Tokenised IPv6 Identifiers
Roy Marples [Wed, 31 Aug 2022 11:17:53 +0000 (12:17 +0100)] 
inet6: Fix Tokenised IPv6 Identifiers

Another one for #101.

2 years agoBump dates for prior
Roy Marples [Wed, 31 Aug 2022 08:21:09 +0000 (09:21 +0100)] 
Bump dates for prior

2 years agoGrammar improvements and typo fixes to README and manpages
Pau Amma [Wed, 31 Aug 2022 07:45:24 +0000 (15:45 +0800)] 
Grammar improvements and typo fixes to README and manpages

2 years agodhcp: allow static options to be removed by not setting a value
Roy Marples [Tue, 30 Aug 2022 20:32:04 +0000 (21:32 +0100)] 
dhcp: allow static options to be removed by not setting a value

This allows this config:

interface eth0
arping 1.2.3.4
static ip_address=5.6.7.8/24

profile 1.2.3.4
# Allow DHCP
static ip_address=

2 years agoDHCP: Only test not BOUND when finishing DAD
Roy Marples [Tue, 30 Aug 2022 16:23:27 +0000 (17:23 +0100)] 
DHCP: Only test not BOUND when finishing DAD

This fixes using a last lease on initial boot when the DHCP
server is not present.

2 years agoFix prior for Linux.
Roy Marples [Tue, 30 Aug 2022 14:52:21 +0000 (15:52 +0100)] 
Fix prior for Linux.

2 years agoIt turns out we can use these defines here.
Roy Marples [Tue, 30 Aug 2022 12:53:44 +0000 (13:53 +0100)] 
It turns out we can use these defines here.

2 years agoprivsep: Open OS sockets for the privileged process at startup
Roy Marples [Tue, 30 Aug 2022 12:46:31 +0000 (13:46 +0100)] 
privsep: Open OS sockets for the privileged process at startup

Rather than opening / closing on demand.
This mirrors the behaviour of dhcpcd without privsep and ensures
that dhcpcd always has the resource available to do it's operations
to ensure the network stays up.

This also has the advantage of working around a recent FreeBSD-14
capsicum issue where opening a route socket in the privileged
process without capsicum fails with the same error as if it was
in capsicum.

2 years agoAdd guard to prior
Roy Marples [Tue, 30 Aug 2022 10:00:41 +0000 (11:00 +0100)] 
Add guard to prior

2 years agoinet6: Support Tokenised IPv6 Identifiers
Roy Marples [Tue, 30 Aug 2022 09:48:11 +0000 (10:48 +0100)] 
inet6: Support Tokenised IPv6 Identifiers

https://datatracker.ietf.org/doc/id/draft-chown-6man-tokenised-ipv6-identifiers-02.txt
Didn't quite make it to a RFC, but it's easy to implement and seems
a nice to have.

Fixes #101.

2 years agoDHCP6: T1, T2, vltime and pltime SHOULD be zero from client messages
Roy Marples [Mon, 29 Aug 2022 16:58:18 +0000 (17:58 +0100)] 
DHCP6: T1, T2, vltime and pltime SHOULD be zero from client messages

See RFC 8415 21.4, 21.6, 21.21 and 21.22.
As such it's impossible to request a lease time as such and we
MUST use the vltimes and pltimes sent by the server.

This addresses the concern in #116 but does fix it as it's not a dhcpcd
problem.

2 years agoDHCP6: we multicast, not broadcast
Roy Marples [Fri, 26 Aug 2022 10:22:05 +0000 (11:22 +0100)] 
DHCP6: we multicast, not broadcast

We have always multicast, just used the wrong terminology.
Addresses #122.

2 years agoprivsep: Allow newfstatat syscall as well
Roy Marples [Fri, 26 Aug 2022 08:24:50 +0000 (09:24 +0100)] 
privsep: Allow newfstatat syscall as well

Allows newer glibc variants to work apparently.
As reported in #84 and #89.

2 years agoprivsep: Allow getrandom sysctl for newer glibc
Roy Marples [Fri, 26 Aug 2022 08:08:36 +0000 (09:08 +0100)] 
privsep: Allow getrandom sysctl for newer glibc

Fixes #120

2 years agoOpenBSD: Fix compile with prior
Roy Marples [Wed, 24 Aug 2022 09:17:42 +0000 (10:17 +0100)] 
OpenBSD: Fix compile with prior

2 years agoClean some compile warnings with prior
Roy Marples [Wed, 24 Aug 2022 09:10:48 +0000 (10:10 +0100)] 
Clean some compile warnings with prior

2 years agocapsicum: sysctl NET_RT_DUMP is a privileged operation
Roy Marples [Wed, 24 Aug 2022 09:04:19 +0000 (10:04 +0100)] 
capsicum: sysctl NET_RT_DUMP is a privileged operation

2 years agoBSD: Fix an error parsing the routing table
Roy Marples [Tue, 23 Aug 2022 12:57:17 +0000 (13:57 +0100)] 
BSD: Fix an error parsing the routing table

Also report any errors reading the routing table.

2 years agoRespect DHCPv6 for prior
Roy Marples [Tue, 9 Aug 2022 16:56:44 +0000 (17:56 +0100)] 
Respect DHCPv6 for prior

2 years agoAmend prior so that NTP servers are removed if the option vanishes
Roy Marples [Tue, 9 Aug 2022 16:32:49 +0000 (17:32 +0100)] 
Amend prior so that NTP servers are removed if the option vanishes

2 years agohooks: Support timesyncd
Roy Marples [Tue, 9 Aug 2022 16:26:37 +0000 (17:26 +0100)] 
hooks: Support timesyncd

Fixes #106

2 years agoinet6: Support RFC 4862 5.5.3.e in regards to Valid Lifetime
Roy Marples [Mon, 8 Aug 2022 15:47:55 +0000 (16:47 +0100)] 
inet6: Support RFC 4862 5.5.3.e in regards to Valid Lifetime

      1.  If the received Valid Lifetime is greater than 2 hours or
          greater than RemainingLifetime, set the valid lifetime of the
          corresponding address to the advertised Valid Lifetime.

      2.  If RemainingLifetime is less than or equal to 2 hours, ignore
          the Prefix Information option with regards to the valid
          lifetime.

      3.  Otherwise, reset the valid lifetime of the corresponding
          address to 2 hours.

3 years agooptions: Ensure that we correctly read auth tokens.
Roy Marples [Fri, 29 Jul 2022 07:00:09 +0000 (08:00 +0100)] 
options: Ensure that we correctly read auth tokens.

3 years agodhcpcd-run-hooks.8: its and not it's for posessive.
Roy Marples [Fri, 29 Jul 2022 06:22:59 +0000 (07:22 +0100)] 
dhcpcd-run-hooks.8: its and not it's for posessive.

Thanks to perkelix.
Fixes #110.

3 years agoAlways skip hooks ending in ~ (#113)
Adam Dinwoodie [Fri, 29 Jul 2022 06:14:41 +0000 (07:14 +0100)] 
Always skip hooks ending in ~ (#113)

dhcpcd-run-hooks is intended to skip hooks with filenames ending in `~`,
but the test only works if `$skip_hooks` is defined and not empty.
Refactor the test such that files ending in `~` are always skipped, as
appears to be the intent of this code.

3 years agoDHCP: Fill chaddr if hwlen really is 16 bytes
Roy Marples [Thu, 2 Jun 2022 05:36:18 +0000 (06:36 +0100)] 
DHCP: Fill chaddr if hwlen really is 16 bytes

This isn't normally a problem as ethernet is 6 bytes in length.
Spotted by Steve Noonan.

3 years agoLinux: Use netlink to workout address flags
Roy Marples [Wed, 20 Apr 2022 16:51:53 +0000 (17:51 +0100)] 
Linux: Use netlink to workout address flags

There seems to be a race with netlink announcing the address vs
it's availability via /proc.
Fixes #76.

3 years agoadd support for loongarch64 (#93)
Wu Xiaotian [Thu, 31 Mar 2022 22:46:20 +0000 (06:46 +0800)] 
add support for loongarch64 (#93)

3 years agoduid: Disable use of machine UUID by default.
Roy Marples [Sat, 12 Mar 2022 11:15:09 +0000 (11:15 +0000)] 
duid: Disable use of machine UUID by default.

Fixes #89.

3 years agohooks: Use command -v rather than type
Roy Marples [Thu, 24 Feb 2022 12:53:02 +0000 (12:53 +0000)] 
hooks: Use command -v rather than type

command -v is now required by POSIX, type is technically an extension.

3 years agoBump dates for prior
Roy Marples [Thu, 24 Feb 2022 06:34:10 +0000 (06:34 +0000)] 
Bump dates for prior

3 years agoFixes manual page typos found by Lintian
Martin-Éric Racine [Thu, 24 Feb 2022 06:28:21 +0000 (06:28 +0000)] 
Fixes manual page typos found by Lintian

3 years agodhcpcd.8: remove reference to 02-dump hook script
Roy Marples [Sat, 13 Nov 2021 14:10:31 +0000 (14:10 +0000)] 
dhcpcd.8: remove reference to 02-dump hook script

This hook script was removed a while ago.
Fixes #72.

3 years agoAdd epair(4) to the ignored interface types list (#73)
Ben Woods [Sat, 13 Nov 2021 13:53:58 +0000 (21:53 +0800)] 
Add epair(4) to the ignored interface types list (#73)

The FreeBSD epair(4) interface type can be thought of as a virtual patch cable.
The epair interfaces come in pairs, with network traffic being passed between the 2 pairs.
The basic intent is to provide connectivity between two virtual network stack instances.
This interface type does not typically require an IP address, as it is passing traffic
between other virtual networks/interfaces which obtain their own IP address.
Therefore, add this interface type to the list that will be ignored by dhcpcd.

3 years agoprivsep: Only set RLIMIT_NOFILES for supported platforms
Roy Marples [Fri, 12 Nov 2021 14:24:11 +0000 (14:24 +0000)] 
privsep: Only set RLIMIT_NOFILES for supported platforms

Basically only for NetBSD, DragonFlyBSD, kqueue or epoll platforms.
All others will use poll(2) and return EINVAL if nfds > RLIMIT_NOFILES.

Trying to work out our nfs limit relies on already listening to
all FD's which may not be the case and was problematic.
Luckily all platforms aside from Solaris have new file creation
sandboxed away aside from accept(2) so this should still be safe.

3 years agosrc/privsep-linux.c: Add support of Synopsys ARC64 architecture (#66)
Veronika Kremneva [Wed, 27 Oct 2021 19:53:22 +0000 (22:53 +0300)] 
src/privsep-linux.c: Add support of Synopsys ARC64 architecture (#66)

Signed-off-by: Veronika Kremneva <kremneva@synopsys.com>
3 years agoprivsep: and again on OpenBSD
Roy Marples [Wed, 20 Oct 2021 10:21:38 +0000 (11:21 +0100)] 
privsep: and again on OpenBSD

3 years agoprivsep: Fix compile on Dragonfly BSD
Roy Marples [Wed, 20 Oct 2021 09:23:19 +0000 (10:23 +0100)] 
privsep: Fix compile on Dragonfly BSD

3 years agoREADME.md: Remove non existant man page links.
Roy Marples [Mon, 18 Oct 2021 14:25:35 +0000 (15:25 +0100)] 
README.md: Remove non existant man page links.

They have not been online for sometime and are unlikely to return.
While here, correct the commit log location.

Fixes #39

3 years agoDHCP: Set INFORM state only when we are about to inform
Roy Marples [Thu, 14 Oct 2021 05:31:11 +0000 (06:31 +0100)] 
DHCP: Set INFORM state only when we are about to inform

As we may not find an address right away.
While here, tidy up and comment code about deriving the address
when none is specified for inform and static setups.

3 years agoDHCP: Fix infinite INFORM messages
Kaelan Mikowicz [Thu, 14 Oct 2021 05:14:45 +0000 (22:14 -0700)] 
DHCP: Fix infinite INFORM messages

When an address is configured on the interface, do not send an
INFORM message if the interface is already bound.

Fixes #48

3 years agoprivsep: Fix getting interface VLANID on BSD (#58)
Philip Paeps [Tue, 12 Oct 2021 08:07:28 +0000 (16:07 +0800)] 
privsep: Fix getting interface VLANID on BSD (#58)

Include relevant headers for the definition of SIOCGETVLAN.  This fixes
DHCPv6 Prefix Delegation where a prefix is delegated to several VLAN
interfaces on the same physical interface.

3 years agoDHCP6: Don't spam the log when a RA repeatedly triggers an INFORM
Roy Marples [Fri, 1 Oct 2021 15:25:53 +0000 (16:25 +0100)] 
DHCP6: Don't spam the log when a RA repeatedly triggers an INFORM

This can occur if the RA reduces the prefix times in accordance
with it's own lifetimes for example.
dhcpcd only checks if the RA contents have changed to trigger a
new INFORM.

As such, only log about new INFORMs.

Fixes #46.

3 years agoprivsep: Enforce proper alignment of serialized struct cmsghdr
Marian Cingel [Tue, 31 Aug 2021 12:33:20 +0000 (13:33 +0100)] 
privsep: Enforce proper alignment of serialized struct cmsghdr

Fixes #43.

3 years agoDHCP6: Only send FQDN for SOLICIT, REQUEST, RENEW, or REBIND messages.
Roy Marples [Tue, 31 Aug 2021 09:57:44 +0000 (10:57 +0100)] 
DHCP6: Only send FQDN for SOLICIT, REQUEST, RENEW, or REBIND messages.

As per RFC 4704 section 5.
Fixes #44.

3 years agoFix rt_cmp_dest() for equivalent network prefixes with different netmasks. (#52)
Stefan Sperling [Tue, 31 Aug 2021 09:31:15 +0000 (11:31 +0200)] 
Fix rt_cmp_dest() for equivalent network prefixes with different netmasks. (#52)

When rt_add() decides that it must delete+add a route in order to change
the routing table entry, a wrong RB tree lookup result can throw it off
the rails. In the case observed, a static /64 prefix was deleted from
vlan1 while dhcpcd intended to delete its reject route bound to lo0.

Given two routes in the table, the loopback reject route installed by
dhcpd for my /48 prefix, and a cloning route for a /64 prefix on vlan1:

2001:db8::/48 ::1         UGR        0        0 32768    56 lo0
2001:db8::/64 2001:db8::1 UCn        1        2     -     4 vlan1

When searching the OS routing table dhcpcd attempts to tell routes apart
based only on the masked destination address. In the above case the masked
destinations look identical. The only difference is the length of the netmask.
The function rt_cmp_dest() didn't detect this and returned the /64 route
while dhcpcd was in fact searching for the /48 route.

This patch fixes the lookup by running rt_cmp_netmask() if the masked
destination comparison via sa_cmp() leaves us with a tie. With this change
dhcpcd deletes the /48 route as intended, and leaves the /64 route alone.

I had to move the rt_cmp_dest() function down since it needs to use the
static helper function rt_cmp_netmask(), which happened to be defined
just below rt_cmp_dest().

Why am I using an overlapping static prefix? The answer is that my ISP
assigns a static /48 prefix but won't route IPv6 unless my router sends
a DHCPv6 request when it connects via PPPoE. I configure static IPv6 subnets
on LAN interfaces and have configured dhcpcd to obtain a /48 prefix lease
without setting addresses on any internal interfaces.
My dhcpcd.conf contains:
  ipv6only
  noipv6rs
  duid
  persistent
  option rapid_commit
  require dhcp_server_identifier
  script ""
  allowinterfaces pppoe0
  interface pppoe0
    ia_pd 1 /2001:db8::/48

This problem was found on OpenBSD, in case that matters for reproduction
of the issue.

3 years agoUpdate man pages for default metric changes (#51)
Peter Fabinski [Tue, 31 Aug 2021 09:29:25 +0000 (05:29 -0400)] 
Update man pages for default metric changes (#51)

* Update man pages for metric changes in 3547ed19

* Make metric man changes additive

3 years agoFix parsing of hex/octal escapes in strings (#42)
Craig McQueen [Fri, 20 Aug 2021 07:57:18 +0000 (17:57 +1000)] 
Fix parsing of hex/octal escapes in strings (#42)

4 years agoMerge pull request #38 from concatime/posix-shell
Roy Marples [Tue, 20 Jul 2021 10:06:32 +0000 (11:06 +0100)] 
Merge pull request #38 from concatime/posix-shell

configure: test -a|o is not POSIX

4 years agoBuild as dhcpcd-9.99 now we have a dhcpcd-9 branch.
Roy Marples [Mon, 19 Jul 2021 20:25:45 +0000 (21:25 +0100)] 
Build as dhcpcd-9.99 now we have a dhcpcd-9 branch.

4 years agoIPv4LL: Don't remove statically assigned addresses
Roy Marples [Mon, 19 Jul 2021 20:22:44 +0000 (21:22 +0100)] 
IPv4LL: Don't remove statically assigned addresses

Fixes #37.

While here, don't open a DHCP port for static addresses either
when not in manager mode.

4 years agoconfigure: test -a|o is not POSIX 38/head
Issam E. Maghni [Tue, 4 May 2021 16:33:02 +0000 (12:33 -0400)] 
configure: test -a|o is not POSIX